diff --git a/atrace/1.0/default/android.hardware.atrace@1.0-service.rc b/atrace/1.0/default/android.hardware.atrace@1.0-service.rc
index 7110b45..31459b4 100644
--- a/atrace/1.0/default/android.hardware.atrace@1.0-service.rc
+++ b/atrace/1.0/default/android.hardware.atrace@1.0-service.rc
@@ -14,4 +14,4 @@
     interface android.hardware.atrace@1.0::IAtraceDevice default
     class early_hal
     user system
-    group system
+    group system readtracefs
diff --git a/audio/policy/1.0/xml/api/current.txt b/audio/policy/1.0/xml/api/current.txt
index 29a9cd4..1478381 100644
--- a/audio/policy/1.0/xml/api/current.txt
+++ b/audio/policy/1.0/xml/api/current.txt
@@ -232,8 +232,10 @@
 
   public class ValueType {
     ctor public ValueType();
+    method public int getAndroid_type();
     method public String getLiteral();
     method public int getNumerical();
+    method public void setAndroid_type(int);
     method public void setLiteral(String);
     method public void setNumerical(int);
   }
diff --git a/audio/policy/1.0/xml/audio_policy_engine_configuration.xsd b/audio/policy/1.0/xml/audio_policy_engine_configuration.xsd
index 842e724..852ea77 100644
--- a/audio/policy/1.0/xml/audio_policy_engine_configuration.xsd
+++ b/audio/policy/1.0/xml/audio_policy_engine_configuration.xsd
@@ -190,6 +190,7 @@
     <xs:complexType name="valueType">
         <xs:attribute name="literal" type="xs:string" use="required"/>
         <xs:attribute name="numerical" type="xs:int" use="required"/>
+        <xs:attribute name="android_type" type="xs:int" use="optional"/>
     </xs:complexType>
 
     <xs:complexType name="attributesRefType">
diff --git a/automotive/can/1.0/tools/libprotocan/Android.bp b/automotive/can/1.0/tools/libprotocan/Android.bp
new file mode 100644
index 0000000..4c23fad
--- /dev/null
+++ b/automotive/can/1.0/tools/libprotocan/Android.bp
@@ -0,0 +1,42 @@
+//
+// Copyright (C) 2020 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "hardware_interfaces_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["hardware_interfaces_license"],
+}
+
+cc_library_static {
+    name: "libprotocan",
+    defaults: ["android.hardware.automotive.can@defaults"],
+    vendor: true,
+    srcs: [
+        "Checksum.cpp",
+        "MessageCounter.cpp",
+        "MessageDef.cpp",
+        "MessageInjector.cpp",
+        "Signal.cpp",
+    ],
+    export_include_dirs: ["include"],
+
+    shared_libs: [
+        "android.hardware.automotive.can@1.0",
+    ],
+}
diff --git a/automotive/can/1.0/tools/libprotocan/Checksum.cpp b/automotive/can/1.0/tools/libprotocan/Checksum.cpp
new file mode 100644
index 0000000..72fb0af
--- /dev/null
+++ b/automotive/can/1.0/tools/libprotocan/Checksum.cpp
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <libprotocan/Checksum.h>
+
+namespace android::hardware::automotive::protocan {
+
+Checksum::Checksum(Signal signal, formula f) : mSignal(signal), mFormula(f) {}
+
+void Checksum::update(can::V1_0::CanMessage& msg) const {
+  mSignal.set(msg, 0);
+  mSignal.set(msg, mFormula(msg) % (mSignal.maxValue + 1));
+}
+
+}  // namespace android::hardware::automotive::protocan
diff --git a/automotive/can/1.0/tools/libprotocan/MessageCounter.cpp b/automotive/can/1.0/tools/libprotocan/MessageCounter.cpp
new file mode 100644
index 0000000..ef9882f
--- /dev/null
+++ b/automotive/can/1.0/tools/libprotocan/MessageCounter.cpp
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <libprotocan/MessageCounter.h>
+
+#include <android-base/logging.h>
+
+namespace android::hardware::automotive::protocan {
+
+/** Whether to log counter state messages. */
+static constexpr bool kSuperVerbose = false;
+
+MessageCounter::MessageCounter(Signal signal) : upperBound(signal.maxValue + 1), mSignal(signal) {}
+
+Signal::value MessageCounter::next() const {
+  CHECK(mCurrent.has_value()) << "Counter not initialized. Did you call isReady?";
+  return (*mCurrent + 1) % upperBound;
+}
+
+void MessageCounter::read(const can::V1_0::CanMessage& msg) {
+    auto val = mSignal.get(msg);
+
+    if (!mCurrent.has_value()) {
+        LOG(VERBOSE) << "Got first counter val of " << val;
+        mCurrent = val;
+        return;
+    }
+
+    auto nextVal = next();
+    if (nextVal == val) {
+        if constexpr (kSuperVerbose) {
+            LOG(VERBOSE) << "Got next counter val of " << nextVal;
+        }
+        mCurrent = nextVal;
+    } else {
+        LOG(DEBUG) << "Ignoring next counter val of " << val << ", waiting for " << nextVal;
+    }
+}
+
+bool MessageCounter::isReady() const { return mCurrent.has_value(); }
+
+void MessageCounter::increment(can::V1_0::CanMessage& msg) {
+  auto newVal = next();
+  mCurrent = newVal;
+  mSignal.set(msg, newVal);
+}
+
+}  // namespace android::hardware::automotive::protocan
diff --git a/automotive/can/1.0/tools/libprotocan/MessageDef.cpp b/automotive/can/1.0/tools/libprotocan/MessageDef.cpp
new file mode 100644
index 0000000..23ce1df
--- /dev/null
+++ b/automotive/can/1.0/tools/libprotocan/MessageDef.cpp
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <libprotocan/MessageDef.h>
+
+#include <android-base/logging.h>
+
+namespace android::hardware::automotive::protocan {
+
+using can::V1_0::CanMessage;
+using can::V1_0::CanMessageId;
+
+MessageDef::MessageDef(CanMessageId id, uint16_t len, std::map<std::string, Signal> signals,
+                       std::optional<Signal> counter, std::optional<Checksum> checksum)
+    : id(id), kLen(len), kSignals(std::move(signals)), kCounter(counter), kChecksum(checksum) {}
+
+const Signal& MessageDef::operator[](const std::string& signalName) const {
+  auto it = kSignals.find(signalName);
+  CHECK(it != kSignals.end()) << "Signal " << signalName << " doesn't exist";
+  return it->second;
+}
+
+CanMessage MessageDef::makeDefault() const {
+  CanMessage msg = {};
+  msg.id = id;
+  msg.payload.resize(kLen);
+
+  for (auto const& [name, signal] : kSignals) {
+    signal.setDefault(msg);
+  }
+
+  return msg;
+}
+
+MessageCounter MessageDef::makeCounter() const {
+  CHECK(kCounter.has_value()) << "Can't build a counter for message without such signal";
+  return MessageCounter(*kCounter);
+}
+
+void MessageDef::updateChecksum(can::V1_0::CanMessage& msg) const {
+  if (!kChecksum.has_value()) return;
+  kChecksum->update(msg);
+}
+
+bool MessageDef::validate(const can::V1_0::CanMessage& msg) const {
+    return msg.payload.size() >= kLen;
+}
+
+}  // namespace android::hardware::automotive::protocan
diff --git a/automotive/can/1.0/tools/libprotocan/MessageInjector.cpp b/automotive/can/1.0/tools/libprotocan/MessageInjector.cpp
new file mode 100644
index 0000000..7c45eaa
--- /dev/null
+++ b/automotive/can/1.0/tools/libprotocan/MessageInjector.cpp
@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <libprotocan/MessageInjector.h>
+
+#include <android-base/logging.h>
+
+#include <thread>
+
+namespace android::hardware::automotive::protocan {
+
+/** Whether to log injected messages. */
+static constexpr bool kSuperVerbose = true;
+
+using namespace std::literals::chrono_literals;
+
+using can::V1_0::CanMessage;
+using can::V1_0::CanMessageId;
+using can::V1_0::ICanBus;
+using can::V1_0::Result;
+
+MessageInjector::MessageInjector(MessageDef msgDef,
+                                 std::optional<std::chrono::milliseconds> interMessageDelay)
+    : kMsgDef(std::move(msgDef)),
+      kInterMessageDelay(interMessageDelay),
+      mCounter(msgDef.makeCounter()) {}
+
+void MessageInjector::inject(const CanMessage& msg) { inject({msg}); }
+
+void MessageInjector::inject(const std::initializer_list<can::V1_0::CanMessage> msgs) {
+  std::lock_guard<std::mutex> lock(mMessagesGuard);
+  for (const auto& msg : msgs) {
+    if constexpr (kSuperVerbose) {
+      LOG(VERBOSE) << "Message scheduled for injection: " << toString(msg);
+    }
+
+    mMessages.push(msg);
+  }
+}
+
+void MessageInjector::processQueueLocked(can::V1_0::ICanBus& bus) {
+  if (mMessages.empty() || !mCounter.isReady()) return;
+
+  auto paddingMessagesCount = mCounter.upperBound - (mMessages.size() % mCounter.upperBound);
+  auto padMessage = kMsgDef.makeDefault();
+  for (unsigned i = 0; i < paddingMessagesCount; i++) {
+    mMessages.push(padMessage);
+  }
+
+  while (!mMessages.empty()) {
+    auto&& outMsg = mMessages.front();
+
+    mCounter.increment(outMsg);
+    kMsgDef.updateChecksum(outMsg);
+
+    if constexpr (kSuperVerbose) {
+      LOG(VERBOSE) << "Injecting message: " << toString(outMsg);
+    }
+    auto result = bus.send(outMsg);
+    if (result != Result::OK) {
+      LOG(ERROR) << "Message injection failed: " << toString(result);
+    }
+
+    mMessages.pop();
+
+    // This would block onReceive, but the class is not supposed to be used in production anyway
+    // (see MessageInjector docstring).
+    if (kInterMessageDelay.has_value()) {
+      std::this_thread::sleep_for(*kInterMessageDelay);
+    }
+  }
+}
+
+void MessageInjector::onReceive(ICanBus& bus, const CanMessage& msg) {
+    if (!kMsgDef.validate(msg)) return;
+
+    std::lock_guard<std::mutex> lock(mMessagesGuard);
+
+    mCounter.read(msg);
+    processQueueLocked(bus);
+}
+
+MessageInjectorManager::MessageInjectorManager(
+    std::initializer_list<std::shared_ptr<MessageInjector>> injectors) {
+  std::transform(injectors.begin(), injectors.end(), std::inserter(mInjectors, mInjectors.end()),
+                 [](const std::shared_ptr<MessageInjector>& injector) {
+                   return std::make_pair(injector->kMsgDef.id, std::move(injector));
+                 });
+}
+
+void MessageInjectorManager::onReceive(sp<ICanBus> bus, const CanMessage& msg) {
+  auto it = mInjectors.find(msg.id);
+  if (it == mInjectors.end()) return;
+  it->second->onReceive(*bus, msg);
+}
+
+}  // namespace android::hardware::automotive::protocan
diff --git a/automotive/can/1.0/tools/libprotocan/Signal.cpp b/automotive/can/1.0/tools/libprotocan/Signal.cpp
new file mode 100644
index 0000000..bc3e070
--- /dev/null
+++ b/automotive/can/1.0/tools/libprotocan/Signal.cpp
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <libprotocan/Signal.h>
+
+#include <android-base/logging.h>
+
+namespace android::hardware::automotive::protocan {
+
+static uint8_t calculateLastByteMask(uint16_t start, uint8_t length) {
+  unsigned lastByteBits = (start + length) % 8;
+  unsigned lastBytePadding = (8 - lastByteBits) % 8;
+  return 0xFF >> lastBytePadding;
+}
+
+static uint8_t calculateFirstByteMask(uint16_t firstByte, uint8_t firstBit, uint16_t lastByte,
+                                      uint8_t lastMask) {
+  uint8_t firstMask = 0xFF << firstBit;
+  if (firstByte == lastByte) firstMask &= lastMask;
+  return firstMask;
+}
+
+Signal::Signal(uint16_t start, uint8_t length, value defVal)
+    : maxValue((1u << length) - 1),
+      kFirstByte(start / 8),
+      kFirstBit(start % 8),
+      kFirstByteBits(8 - kFirstBit),
+      kLastByte((start + length - 1) / 8),
+      kLastMask(calculateLastByteMask(start, length)),
+      kFirstMask(calculateFirstByteMask(kFirstByte, kFirstBit, kLastByte, kLastMask)),
+      kDefVal(defVal) {
+  CHECK(length > 0) << "Signal length must not be zero";
+}
+
+Signal::value Signal::get(const can::V1_0::CanMessage& msg) const {
+    CHECK(msg.payload.size() > kLastByte)
+            << "Message is too short. Did you call MessageDef::validate?";
+
+    Signal::value v = 0;
+    if (kLastByte != kFirstByte) v = kLastMask & msg.payload[kLastByte];
+
+    for (int i = kLastByte - 1; i > kFirstByte; i--) {
+        v = (v << 8) | msg.payload[i];
+    }
+
+    return (v << kFirstByteBits) | ((msg.payload[kFirstByte] & kFirstMask) >> kFirstBit);
+}
+
+void Signal::set(can::V1_0::CanMessage& msg, Signal::value val) const {
+  CHECK(msg.payload.size() > kLastByte)
+      << "Signal requires message of length " << (kLastByte + 1)
+      << " which is beyond message length of " << msg.payload.size();
+
+  uint8_t firstByte = val << kFirstBit;
+  val >>= kFirstByteBits;
+
+  msg.payload[kFirstByte] = (msg.payload[kFirstByte] & ~kFirstMask) | (firstByte & kFirstMask);
+
+  for (int i = kFirstByte + 1; i < kLastByte; i++) {
+    msg.payload[i] = val & 0xFF;
+    val >>= 8;
+  }
+
+  if (kLastByte != kFirstByte) {
+    msg.payload[kLastByte] = (msg.payload[kLastByte] & ~kLastMask) | (val & kLastMask);
+  }
+}
+
+void Signal::setDefault(can::V1_0::CanMessage& msg) const { set(msg, kDefVal); }
+
+}  // namespace android::hardware::automotive::protocan
diff --git a/automotive/can/1.0/tools/libprotocan/include/libprotocan/Checksum.h b/automotive/can/1.0/tools/libprotocan/include/libprotocan/Checksum.h
new file mode 100644
index 0000000..ff1dc91
--- /dev/null
+++ b/automotive/can/1.0/tools/libprotocan/include/libprotocan/Checksum.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android/hardware/automotive/can/1.0/types.h>
+#include <libprotocan/Signal.h>
+
+namespace android::hardware::automotive::protocan {
+
+class Checksum {
+ public:
+  using formula = std::function<Signal::value(const can::V1_0::CanMessage&)>;
+
+  Checksum(Signal signal, formula f);
+
+  void update(can::V1_0::CanMessage& msg) const;
+
+ private:
+  const Signal mSignal;
+  const formula mFormula;
+};
+
+}  // namespace android::hardware::automotive::protocan
diff --git a/automotive/can/1.0/tools/libprotocan/include/libprotocan/MessageCounter.h b/automotive/can/1.0/tools/libprotocan/include/libprotocan/MessageCounter.h
new file mode 100644
index 0000000..56113be
--- /dev/null
+++ b/automotive/can/1.0/tools/libprotocan/include/libprotocan/MessageCounter.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android/hardware/automotive/can/1.0/types.h>
+#include <libprotocan/Signal.h>
+
+namespace android::hardware::automotive::protocan {
+
+class MessageCounter {
+ public:
+  const Signal::value upperBound;
+
+  MessageCounter(Signal signal);
+
+  /**
+   * Parse CAN message sent by external ECU to determine current counter value.
+   */
+  void read(const can::V1_0::CanMessage& msg);
+
+  /**
+   * States whether current counter value is determined.
+   */
+  bool isReady() const;
+
+  /**
+   * Increment current counter value and set it in a new message.
+   *
+   * Caller must check isReady() at least once before calling this method.
+   */
+  void increment(can::V1_0::CanMessage& msg);
+
+ private:
+  const Signal mSignal;
+
+  std::optional<Signal::value> mCurrent = std::nullopt;
+
+  Signal::value next() const;
+};
+
+}  // namespace android::hardware::automotive::protocan
diff --git a/automotive/can/1.0/tools/libprotocan/include/libprotocan/MessageDef.h b/automotive/can/1.0/tools/libprotocan/include/libprotocan/MessageDef.h
new file mode 100644
index 0000000..79b21e1
--- /dev/null
+++ b/automotive/can/1.0/tools/libprotocan/include/libprotocan/MessageDef.h
@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android/hardware/automotive/can/1.0/types.h>
+#include <libprotocan/Checksum.h>
+#include <libprotocan/MessageCounter.h>
+#include <libprotocan/Signal.h>
+
+namespace android::hardware::automotive::protocan {
+
+/**
+ * CAN message definition (not the actual message data).
+ *
+ * Describes static message properties (message ID, signals etc).
+ */
+class MessageDef {
+ public:
+  const can::V1_0::CanMessageId id;
+
+  /**
+   * Create message definition.
+   *
+   * Currently only constant length messages are supported.
+   *
+   * \param id CAN message ID
+   * \param len CAN message length
+   * \param signals CAN signal definitions
+   * \param counter Designated CAN signal definition for message counter, if the message has one
+   * \param checksum Designated CAN signal definition for payload checksum, if the message has one
+   */
+  MessageDef(can::V1_0::CanMessageId id, uint16_t len, std::map<std::string, Signal> signals,
+             std::optional<Signal> counter = std::nullopt,
+             std::optional<Checksum> checksum = std::nullopt);
+
+  const Signal& operator[](const std::string& signalName) const;
+
+  can::V1_0::CanMessage makeDefault() const;
+  MessageCounter makeCounter() const;
+
+  void updateChecksum(can::V1_0::CanMessage& msg) const;
+
+  /**
+   * Validate the message payload is large enough to hold all the signals.
+   */
+  bool validate(const can::V1_0::CanMessage& msg) const;
+
+private:
+  const uint16_t kLen;
+  const std::map<std::string, Signal> kSignals;
+  const std::optional<Signal> kCounter;
+  const std::optional<Checksum> kChecksum;
+};
+
+}  // namespace android::hardware::automotive::protocan
diff --git a/automotive/can/1.0/tools/libprotocan/include/libprotocan/MessageInjector.h b/automotive/can/1.0/tools/libprotocan/include/libprotocan/MessageInjector.h
new file mode 100644
index 0000000..b0ea260
--- /dev/null
+++ b/automotive/can/1.0/tools/libprotocan/include/libprotocan/MessageInjector.h
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android-base/macros.h>
+#include <android/hardware/automotive/can/1.0/ICanBus.h>
+#include <libprotocan/MessageCounter.h>
+#include <libprotocan/MessageDef.h>
+#include <utils/Mutex.h>
+
+#include <queue>
+
+namespace android::hardware::automotive::protocan {
+
+class MessageInjectorManager;
+
+/**
+ * Injects CAN messages with a counter to an existing system.
+ *
+ * This class is NOT meant to use in production - there should be no need to inject counted CAN
+ * messages where the other sender is also broadcasting them. If this is the case, it may be a sign
+ * your CAN network needs a redesign. This tool is intended for use for testing and demo purposes.
+ */
+class MessageInjector {
+ public:
+  MessageInjector(MessageDef msgDef, std::optional<std::chrono::milliseconds> interMessageDelay);
+
+  void inject(const can::V1_0::CanMessage& msg);
+  void inject(const std::initializer_list<can::V1_0::CanMessage> msgs);
+
+ private:
+  const MessageDef kMsgDef;
+  const std::optional<std::chrono::milliseconds> kInterMessageDelay;
+  MessageCounter mCounter;
+
+  mutable std::mutex mMessagesGuard;
+  std::queue<can::V1_0::CanMessage> mMessages GUARDED_BY(mMessagesGuard);
+
+  void onReceive(can::V1_0::ICanBus& bus, const can::V1_0::CanMessage& msg);
+  void processQueueLocked(can::V1_0::ICanBus& bus);
+
+  friend class MessageInjectorManager;
+
+  DISALLOW_COPY_AND_ASSIGN(MessageInjector);
+};
+
+/**
+ * Routes intercepted messages to MessageInjector instances configured to handle specific CAN
+ * message (CAN message ID). Intercepted messages from other nodes in CAN network are used to read
+ * current counter value in order to spoof the next packet.
+ */
+class MessageInjectorManager {
+ public:
+  MessageInjectorManager(std::initializer_list<std::shared_ptr<MessageInjector>> injectors);
+
+  void onReceive(sp<can::V1_0::ICanBus> bus, const can::V1_0::CanMessage& msg);
+
+ private:
+  std::map<can::V1_0::CanMessageId, std::shared_ptr<MessageInjector>> mInjectors;
+
+  DISALLOW_COPY_AND_ASSIGN(MessageInjectorManager);
+};
+
+}  // namespace android::hardware::automotive::protocan
diff --git a/automotive/can/1.0/tools/libprotocan/include/libprotocan/Signal.h b/automotive/can/1.0/tools/libprotocan/include/libprotocan/Signal.h
new file mode 100644
index 0000000..7c0f119
--- /dev/null
+++ b/automotive/can/1.0/tools/libprotocan/include/libprotocan/Signal.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android-base/macros.h>
+#include <android/hardware/automotive/can/1.0/types.h>
+
+namespace android::hardware::automotive::protocan {
+
+/**
+ * TODO(twasilczyk): right now, only Little Endian signals are supported.
+ */
+class Signal {
+ public:
+  using value = uint64_t;
+
+  const value maxValue;
+
+  Signal(uint16_t start, uint8_t length, value defVal = 0);
+
+  value get(const can::V1_0::CanMessage& msg) const;
+  void set(can::V1_0::CanMessage& msg, value val) const;
+  void setDefault(can::V1_0::CanMessage& msg) const;
+
+ private:
+  const uint16_t kFirstByte;     ///< Index of first byte that holds the signal
+  const uint8_t kFirstBit;       ///< Index of first bit within first byte
+  const uint8_t kFirstByteBits;  ///< How many bits of the first byte belong to the signal
+  const uint16_t kLastByte;      ///< Index of last byte that holds the signal
+  const uint8_t kLastMask;       ///< Bits of the last byte that belong to the signal
+  const uint8_t kFirstMask;      ///< Bits of the first byte that belong to the signal
+
+  const value kDefVal;
+};
+
+}  // namespace android::hardware::automotive::protocan
diff --git a/automotive/can/1.0/tools/libprotocan/tests/Android.bp b/automotive/can/1.0/tools/libprotocan/tests/Android.bp
new file mode 100644
index 0000000..251cc06
--- /dev/null
+++ b/automotive/can/1.0/tools/libprotocan/tests/Android.bp
@@ -0,0 +1,39 @@
+//
+// Copyright (C) 2020 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "hardware_interfaces_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["hardware_interfaces_license"],
+}
+
+cc_test {
+    name: "libprotocan_signal_test",
+    defaults: ["android.hardware.automotive.can@defaults"],
+    vendor: true,
+    gtest: true,
+    srcs: ["libprotocan_signal_test.cpp"],
+    static_libs: [
+        "libprotocan",
+    ],
+    shared_libs: [
+        "android.hardware.automotive.can@1.0",
+        "libhidlbase",
+    ],
+}
diff --git a/automotive/can/1.0/tools/libprotocan/tests/libprotocan_signal_test.cpp b/automotive/can/1.0/tools/libprotocan/tests/libprotocan_signal_test.cpp
new file mode 100644
index 0000000..19c1209
--- /dev/null
+++ b/automotive/can/1.0/tools/libprotocan/tests/libprotocan_signal_test.cpp
@@ -0,0 +1,218 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <libprotocan/Signal.h>
+
+#include <gtest/gtest.h>
+
+namespace android::hardware::automotive::protocan::unittest {
+
+TEST(SignalTest, TestGetSingleBytes) {
+  can::V1_0::CanMessage msg = {};
+  msg.payload = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
+  for (unsigned i = 0; i < msg.payload.size(); i++) {
+    Signal signal(8 * i, 8);
+    ASSERT_EQ(i, signal.get(msg));
+  }
+}
+
+TEST(SignalTest, TestSetSingleBytes) {
+  std::vector<can::V1_0::CanMessage> msgs = {{}, {}, {}};
+  msgs[0].payload = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
+  msgs[1].payload = {0xAB, 0xAB, 0xAB, 0xAB, 0xAB, 0xAB, 0xAB, 0xAB, 0xAB, 0xAB};
+  msgs[2].payload = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+  for (unsigned i = 0; i < msgs[0].payload.size(); i++) {
+    Signal signal(8 * i, 8);
+
+    for (auto&& msgOriginal : msgs) {
+      auto msgModified = msgOriginal;
+      signal.set(msgModified, 0xBA);
+
+      auto msgExpected = msgOriginal;
+      msgExpected.payload[i] = 0xBA;
+
+      ASSERT_EQ(msgExpected, msgModified) << "i=" << i;
+    }
+  }
+}
+
+TEST(SignalTest, TestGetStart4) {
+  /* Data generated with Python3:
+   *
+   * from cantools.database.can import *
+   * hex(Message(1, 'm', 4, [Signal('s', 4, 16, byte_order='little_endian')]).
+   *     decode(b'\xde\xad\xbe\xef')['s'])
+   */
+
+  can::V1_0::CanMessage msg = {};
+  msg.payload = {0xDE, 0xAD, 0xBE, 0xEF};
+  can::V1_0::CanMessage msg2 = {};
+  msg2.payload = {0xDE, 0xAD, 0xBE, 0xEF, 0xDE, 0xAD};
+
+  Signal s0_4(0, 4);
+  Signal s4_4(4, 4);
+  Signal s4_8(4, 8);
+  Signal s4_16(4, 16);
+  Signal s4_28(4, 28);
+  Signal s12_8(12, 8);
+  Signal s12_12(12, 12);
+  Signal s12_16(12, 16);
+  Signal s12_20(12, 20);
+  Signal s12_32(12, 32);
+
+  ASSERT_EQ(0xEu, s0_4.get(msg));
+  ASSERT_EQ(0xDu, s4_4.get(msg));
+  ASSERT_EQ(0xDDu, s4_8.get(msg));
+  ASSERT_EQ(0xEADDu, s4_16.get(msg));
+  ASSERT_EQ(0xEFBEADDu, s4_28.get(msg));
+  ASSERT_EQ(0xEAu, s12_8.get(msg));
+  ASSERT_EQ(0xBEAu, s12_12.get(msg));
+  ASSERT_EQ(0xFBEAu, s12_16.get(msg));
+  ASSERT_EQ(0xEFBEAu, s12_20.get(msg));
+  ASSERT_EQ(0xDDEEFBEAu, s12_32.get(msg2));
+}
+
+TEST(SignalTest, TestGet64) {
+  /* Data generated with Python3:
+   *
+   * from cantools.database.can import *
+   * hex(Message(1, 'm', 9, [Signal('s', 4, 64, byte_order='little_endian')]).
+   *     decode(b'\xde\xad\xbe\xef\xab\xbc\xcd\xde\xef')['s'])
+   */
+
+  can::V1_0::CanMessage msg = {};
+  msg.payload = {0xDE, 0xAD, 0xBE, 0xEF, 0xAB, 0xBC, 0xCD, 0xDE, 0xEF};
+
+  Signal s0_64(0, 64);
+  Signal s8_64(8, 64);
+  Signal s4_64(4, 64);
+  Signal s1_64(1, 64);
+
+  ASSERT_EQ(0xDECDBCABEFBEADDEu, s0_64.get(msg));
+  ASSERT_EQ(0xEFDECDBCABEFBEADu, s8_64.get(msg));
+  ASSERT_EQ(0xFDECDBCABEFBEADDu, s4_64.get(msg));
+  ASSERT_EQ(0xEF66DE55F7DF56EFu, s1_64.get(msg));
+}
+
+TEST(SignalTest, TestGetAllStarts) {
+  /* Data generated with Python3:
+   *
+   * from cantools.database.can import *
+   * hex(Message(1, 'm', 6, [Signal('s', 0, 20, byte_order='little_endian')]).
+   *     decode(b'\xde\xad\xbe\xef\xde\xad')['s'])
+   */
+
+  std::map<int, Signal::value> shifts = {
+      {0, 0xEADDEu}, {1, 0xF56EFu}, {2, 0xFAB77u}, {3, 0x7D5BBu}, {4, 0xBEADDu},  {5, 0xDF56Eu},
+      {6, 0xEFAB7u}, {7, 0xF7D5Bu}, {8, 0xFBEADu}, {9, 0x7DF56u}, {10, 0xBEFABu}, {11, 0xDF7D5u},
+  };
+
+  can::V1_0::CanMessage msg = {};
+  msg.payload = {0xDE, 0xAD, 0xBE, 0xEF, 0xCC, 0xCC};
+
+  for (auto const& [start, expected] : shifts) {
+    Signal s(start, 20);
+    ASSERT_EQ(expected, s.get(msg)) << "shift of " << start << " failed";
+  }
+}
+
+TEST(SignalTest, TestSetStart4) {
+  /* Data generated with Python3:
+   *
+   * from cantools.database.can import *
+   * so=4 ; sl=8
+   * md = Message(1, 'm', 4, [Signal('a1', 0, so), Signal('a2', so+sl, 32-so-sl),
+   *     Signal('s', so, sl, byte_order='little_endian')])
+   * m = md.decode(b'\xcc\xcc\xcc\xcc')
+   * m['s'] = 0xDE
+   * binascii.hexlify(md.encode(m)).upper()
+   */
+  typedef struct {
+    int start;
+    int length;
+    Signal::value setValue;
+    hidl_vec<uint8_t> payload;
+  } case_t;
+
+  std::vector<case_t> cases = {
+      {0, 4, 0xDu, {0xCD, 0xCC, 0xCC, 0xCC}},       {4, 4, 0xDu, {0xDC, 0xCC, 0xCC, 0xCC}},
+      {4, 8, 0xDEu, {0xEC, 0xCD, 0xCC, 0xCC}},      {4, 16, 0xDEADu, {0xDC, 0xEA, 0xCD, 0xCC}},
+      {4, 24, 0xDEADBEu, {0xEC, 0xDB, 0xEA, 0xCD}}, {4, 28, 0xDEADBEEu, {0xEC, 0xBE, 0xAD, 0xDE}},
+      {12, 8, 0xDEu, {0xCC, 0xEC, 0xCD, 0xCC}},     {12, 12, 0xDEAu, {0xCC, 0xAC, 0xDE, 0xCC}},
+      {12, 16, 0xDEADu, {0xCC, 0xDC, 0xEA, 0xCD}},  {12, 20, 0xDEADBu, {0xCC, 0xBC, 0xAD, 0xDE}},
+  };
+
+  can::V1_0::CanMessage msg = {};
+  msg.payload = {0xCC, 0xCC, 0xCC, 0xCC};
+
+  for (auto const& tcase : cases) {
+    Signal s(tcase.start, tcase.length);
+
+    can::V1_0::CanMessage expectedMsg = {};
+    expectedMsg.payload = tcase.payload;
+
+    can::V1_0::CanMessage editedMsg = msg;
+    s.set(editedMsg, tcase.setValue);
+
+    ASSERT_EQ(expectedMsg, editedMsg) << " set(" << tcase.start << ", " << tcase.length << ")";
+  }
+}
+
+TEST(SignalTest, TestSetAllStarts) {
+  /* Data generated with Python3:
+   * from cantools.database.can import *
+   * import binascii
+   * import textwrap
+   *
+   * length = 20
+   * for start in range(0, 32 - length):
+   *     signals = [Signal('s', start, length, byte_order='little_endian')]
+   *     if start > 0: signals.append(Signal('a', 0, start, byte_order='little_endian'))
+   *     signals.append(Signal('b', start + length, 32 - start - length,
+   *         byte_order='little_endian'))
+   *
+   *     md = Message(1, 'm', 4, signals)
+   *     m = md.decode(b'\xcc\xcc\xcc\xcc')
+   *     m['s'] = 0xDEADB
+   *     out = binascii.hexlify(md.encode(m)).decode('ascii').upper()
+   *     out = ', '.join(['0x{}'.format(v) for v in textwrap.wrap(out, 2)])
+   *     print('{{ {:d}, {{ {:s} }}}},'.format(start, out))
+   */
+
+  std::map<int, hidl_vec<uint8_t>> shifts = {
+      {0, {0xDB, 0xEA, 0xCD, 0xCC}}, {1, {0xB6, 0xD5, 0xDB, 0xCC}},  {2, {0x6C, 0xAB, 0xF7, 0xCC}},
+      {3, {0xDC, 0x56, 0xEF, 0xCC}}, {4, {0xBC, 0xAD, 0xDE, 0xCC}},  {5, {0x6C, 0x5B, 0xBD, 0xCD}},
+      {6, {0xCC, 0xB6, 0x7A, 0xCF}}, {7, {0xCC, 0x6D, 0xF5, 0xCE}},  {8, {0xCC, 0xDB, 0xEA, 0xCD}},
+      {9, {0xCC, 0xB6, 0xD5, 0xDB}}, {10, {0xCC, 0x6C, 0xAB, 0xF7}}, {11, {0xCC, 0xDC, 0x56, 0xEF}},
+  };
+
+  can::V1_0::CanMessage msg = {};
+  msg.payload = {0xCC, 0xCC, 0xCC, 0xCC};
+
+  for (auto const& [start, expectedPayload] : shifts) {
+    Signal s(start, 20);
+
+    can::V1_0::CanMessage expectedMsg = {};
+    expectedMsg.payload = expectedPayload;
+
+    can::V1_0::CanMessage editedMsg = msg;
+    s.set(editedMsg, 0xDEADB);
+
+    ASSERT_EQ(expectedMsg, editedMsg) << "shift of " << start << " failed";
+  }
+}
+
+}  // namespace android::hardware::automotive::protocan::unittest
diff --git a/automotive/evs/OWNERS b/automotive/evs/OWNERS
index 6fc5024..b973e91 100644
--- a/automotive/evs/OWNERS
+++ b/automotive/evs/OWNERS
@@ -1,3 +1,3 @@
+ankitarora@google.com
 changyeon@google.com
-garysungang@google.com
-haoxiangl@google.com
+jwhpryor@google.com
diff --git a/automotive/evs/aidl/Android.bp b/automotive/evs/aidl/Android.bp
new file mode 100644
index 0000000..3c0aa13
--- /dev/null
+++ b/automotive/evs/aidl/Android.bp
@@ -0,0 +1,51 @@
+// Copyright (C) 2022 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "hardware_interfaces_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["hardware_interfaces_license"],
+}
+
+aidl_interface {
+    name: "android.hardware.automotive.evs",
+    vendor_available: true,
+    srcs: [
+        "android/hardware/automotive/evs/*.aidl"
+    ],
+    stability: "vintf",
+    imports: [
+        "android.hardware.common-V2",
+        "android.hardware.graphics.common-V3",
+    ],
+    backend: {
+        java: {
+            // android.hardware.graphics.common package is not enabled
+            // for Java backend.
+            enabled: false,
+        },
+        cpp: {
+            enabled: false,
+        },
+        ndk: {
+            vndk: {
+                enabled: false,
+            },
+            min_sdk_version: "29"
+        },
+    },
+}
diff --git a/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/BufferDesc.aidl b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/BufferDesc.aidl
new file mode 100644
index 0000000..31acdb8
--- /dev/null
+++ b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/BufferDesc.aidl
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.automotive.evs;
+@VintfStability
+parcelable BufferDesc {
+  android.hardware.graphics.common.HardwareBuffer buffer;
+  int pixelSizeBytes;
+  int bufferId;
+  @utf8InCpp String deviceId;
+  long timestamp;
+  byte[] metadata;
+}
diff --git a/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/CameraDesc.aidl b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/CameraDesc.aidl
new file mode 100644
index 0000000..4dadeb8
--- /dev/null
+++ b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/CameraDesc.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.automotive.evs;
+@VintfStability
+parcelable CameraDesc {
+  @utf8InCpp String id;
+  int vendorFlags;
+  byte[] metadata;
+}
diff --git a/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/CameraParam.aidl b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/CameraParam.aidl
new file mode 100644
index 0000000..ae4ce77
--- /dev/null
+++ b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/CameraParam.aidl
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.automotive.evs;
+@Backing(type="int") @VintfStability
+enum CameraParam {
+  BRIGHTNESS = 0,
+  CONTRAST = 1,
+  AUTOGAIN = 2,
+  GAIN = 3,
+  AUTO_WHITE_BALANCE = 4,
+  WHITE_BALANCE_TEMPERATURE = 5,
+  SHARPNESS = 6,
+  AUTO_EXPOSURE = 7,
+  ABSOLUTE_EXPOSURE = 8,
+  ABSOLUTE_FOCUS = 9,
+  AUTO_FOCUS = 10,
+  ABSOLUTE_ZOOM = 11,
+}
diff --git a/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/DeviceStatus.aidl b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/DeviceStatus.aidl
new file mode 100644
index 0000000..cc066ac
--- /dev/null
+++ b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/DeviceStatus.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.automotive.evs;
+@VintfStability
+parcelable DeviceStatus {
+  @utf8InCpp String id;
+  android.hardware.automotive.evs.DeviceStatusType status;
+}
diff --git a/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/DeviceStatusType.aidl b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/DeviceStatusType.aidl
new file mode 100644
index 0000000..d0f1d8e
--- /dev/null
+++ b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/DeviceStatusType.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.automotive.evs;
+@Backing(type="int") @VintfStability
+enum DeviceStatusType {
+  CAMERA_AVAILABLE = 0,
+  CAMERA_NOT_AVAILABLE = 1,
+  DISPLAY_AVAILABLE = 2,
+  DISPLAY_NOT_AVAILABLE = 3,
+}
diff --git a/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/DisplayDesc.aidl b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/DisplayDesc.aidl
new file mode 100644
index 0000000..4ac029e
--- /dev/null
+++ b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/DisplayDesc.aidl
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.automotive.evs;
+@VintfStability
+parcelable DisplayDesc {
+  @utf8InCpp String id;
+  int width;
+  int height;
+  android.hardware.automotive.evs.Rotation orientation;
+  int vendorFlags;
+}
diff --git a/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/DisplayState.aidl b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/DisplayState.aidl
new file mode 100644
index 0000000..a5f4309
--- /dev/null
+++ b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/DisplayState.aidl
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.automotive.evs;
+@Backing(type="int") @VintfStability
+enum DisplayState {
+  NOT_OPEN = 0,
+  NOT_VISIBLE = 1,
+  VISIBLE_ON_NEXT_FRAME = 2,
+  VISIBLE = 3,
+  DEAD = 4,
+}
diff --git a/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/EvsEventDesc.aidl b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/EvsEventDesc.aidl
new file mode 100644
index 0000000..09b2b9d
--- /dev/null
+++ b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/EvsEventDesc.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.automotive.evs;
+@VintfStability
+parcelable EvsEventDesc {
+  android.hardware.automotive.evs.EvsEventType aType;
+  @utf8InCpp String deviceId;
+  int[] payload;
+}
diff --git a/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/EvsEventType.aidl b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/EvsEventType.aidl
new file mode 100644
index 0000000..052a6b3
--- /dev/null
+++ b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/EvsEventType.aidl
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.automotive.evs;
+@Backing(type="int") @VintfStability
+enum EvsEventType {
+  STREAM_STARTED = 0,
+  STREAM_STOPPED = 1,
+  FRAME_DROPPED = 2,
+  TIMEOUT = 3,
+  PARAMETER_CHANGED = 4,
+  MASTER_RELEASED = 5,
+  STREAM_ERROR = 6,
+}
diff --git a/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/EvsResult.aidl b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/EvsResult.aidl
new file mode 100644
index 0000000..a0418a9
--- /dev/null
+++ b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/EvsResult.aidl
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.automotive.evs;
+@Backing(type="int") @VintfStability
+enum EvsResult {
+  OK = 0,
+  INVALID_ARG = 1,
+  STREAM_ALREADY_RUNNING = 2,
+  BUFFER_NOT_AVAILABLE = 3,
+  OWNERSHIP_LOST = 4,
+  UNDERLYING_SERVICE_ERROR = 5,
+  PERMISSION_DENIED = 6,
+  RESOURCE_NOT_AVAILABLE = 7,
+  RESOURCE_BUSY = 8,
+  NOT_IMPLEMENTED = 9,
+  NOT_SUPPORTED = 10,
+}
diff --git a/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/IEvsCamera.aidl b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/IEvsCamera.aidl
new file mode 100644
index 0000000..ce1b97d
--- /dev/null
+++ b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/IEvsCamera.aidl
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.automotive.evs;
+@VintfStability
+interface IEvsCamera {
+  void doneWithFrame(in android.hardware.automotive.evs.BufferDesc[] buffer);
+  void forcePrimaryClient(in android.hardware.automotive.evs.IEvsDisplay display);
+  android.hardware.automotive.evs.CameraDesc getCameraInfo();
+  byte[] getExtendedInfo(in int opaqueIdentifier);
+  int[] getIntParameter(in android.hardware.automotive.evs.CameraParam id);
+  android.hardware.automotive.evs.ParameterRange getIntParameterRange(in android.hardware.automotive.evs.CameraParam id);
+  android.hardware.automotive.evs.CameraParam[] getParameterList();
+  android.hardware.automotive.evs.CameraDesc getPhysicalCameraInfo(in String deviceId);
+  int importExternalBuffers(in android.hardware.automotive.evs.BufferDesc[] buffers);
+  void pauseVideoStream();
+  void resumeVideoStream();
+  void setExtendedInfo(in int opaqueIdentifier, in byte[] opaqueValue);
+  int[] setIntParameter(in android.hardware.automotive.evs.CameraParam id, in int value);
+  void setPrimaryClient();
+  void setMaxFramesInFlight(in int bufferCount);
+  void startVideoStream(in android.hardware.automotive.evs.IEvsCameraStream receiver);
+  void stopVideoStream();
+  void unsetPrimaryClient();
+}
diff --git a/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/IEvsCameraStream.aidl b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/IEvsCameraStream.aidl
new file mode 100644
index 0000000..6e2e64a
--- /dev/null
+++ b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/IEvsCameraStream.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.automotive.evs;
+@VintfStability
+interface IEvsCameraStream {
+  oneway void deliverFrame(in android.hardware.automotive.evs.BufferDesc[] buffer);
+  oneway void notify(in android.hardware.automotive.evs.EvsEventDesc event);
+}
diff --git a/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/IEvsDisplay.aidl b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/IEvsDisplay.aidl
new file mode 100644
index 0000000..9b538d4
--- /dev/null
+++ b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/IEvsDisplay.aidl
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.automotive.evs;
+@VintfStability
+interface IEvsDisplay {
+  android.hardware.automotive.evs.DisplayDesc getDisplayInfo();
+  android.hardware.automotive.evs.DisplayState getDisplayState();
+  android.hardware.automotive.evs.BufferDesc getTargetBuffer();
+  void returnTargetBufferForDisplay(in android.hardware.automotive.evs.BufferDesc buffer);
+  void setDisplayState(in android.hardware.automotive.evs.DisplayState state);
+}
diff --git a/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/IEvsEnumerator.aidl b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/IEvsEnumerator.aidl
new file mode 100644
index 0000000..a79c68d
--- /dev/null
+++ b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/IEvsEnumerator.aidl
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.automotive.evs;
+@VintfStability
+interface IEvsEnumerator {
+  void closeCamera(in android.hardware.automotive.evs.IEvsCamera carCamera);
+  void closeDisplay(in android.hardware.automotive.evs.IEvsDisplay display);
+  void closeUltrasonicsArray(in android.hardware.automotive.evs.IEvsUltrasonicsArray evsUltrasonicsArray);
+  android.hardware.automotive.evs.CameraDesc[] getCameraList();
+  byte[] getDisplayIdList();
+  android.hardware.automotive.evs.DisplayState getDisplayState();
+  android.hardware.automotive.evs.Stream[] getStreamList(in android.hardware.automotive.evs.CameraDesc description);
+  android.hardware.automotive.evs.UltrasonicsArrayDesc[] getUltrasonicsArrayList();
+  boolean isHardware();
+  android.hardware.automotive.evs.IEvsCamera openCamera(in String cameraId, in android.hardware.automotive.evs.Stream streamCfg);
+  android.hardware.automotive.evs.IEvsDisplay openDisplay(in byte id);
+  android.hardware.automotive.evs.IEvsUltrasonicsArray openUltrasonicsArray(in String ultrasonicsArrayId);
+  void registerStatusCallback(in android.hardware.automotive.evs.IEvsEnumeratorStatusCallback callback);
+}
diff --git a/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/IEvsEnumeratorStatusCallback.aidl b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/IEvsEnumeratorStatusCallback.aidl
new file mode 100644
index 0000000..c39a4e8
--- /dev/null
+++ b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/IEvsEnumeratorStatusCallback.aidl
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.automotive.evs;
+@VintfStability
+interface IEvsEnumeratorStatusCallback {
+  oneway void deviceStatusChanged(in android.hardware.automotive.evs.DeviceStatus[] status);
+}
diff --git a/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/IEvsUltrasonicsArray.aidl b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/IEvsUltrasonicsArray.aidl
new file mode 100644
index 0000000..1183ab3
--- /dev/null
+++ b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/IEvsUltrasonicsArray.aidl
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.automotive.evs;
+@VintfStability
+interface IEvsUltrasonicsArray {
+  void doneWithDataFrame(in android.hardware.automotive.evs.UltrasonicsDataFrameDesc dataFrameDesc);
+  android.hardware.automotive.evs.UltrasonicsArrayDesc getUltrasonicArrayInfo();
+  void setMaxFramesInFlight(in int bufferCount);
+  void startStream(in android.hardware.automotive.evs.IEvsUltrasonicsArrayStream stream);
+  void stopStream();
+}
diff --git a/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/IEvsUltrasonicsArrayStream.aidl b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/IEvsUltrasonicsArrayStream.aidl
new file mode 100644
index 0000000..510b0a4
--- /dev/null
+++ b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/IEvsUltrasonicsArrayStream.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.automotive.evs;
+@VintfStability
+interface IEvsUltrasonicsArrayStream {
+  oneway void deliverDataFrame(in android.hardware.automotive.evs.UltrasonicsDataFrameDesc dataFrameDesc);
+  oneway void notify(in android.hardware.automotive.evs.EvsEventDesc event);
+}
diff --git a/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/ParameterRange.aidl b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/ParameterRange.aidl
new file mode 100644
index 0000000..44e9b59
--- /dev/null
+++ b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/ParameterRange.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.automotive.evs;
+@VintfStability
+parcelable ParameterRange {
+  int min;
+  int max;
+  int step;
+}
diff --git a/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/Rotation.aidl b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/Rotation.aidl
new file mode 100644
index 0000000..91971fc
--- /dev/null
+++ b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/Rotation.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.automotive.evs;
+@Backing(type="int") @VintfStability
+enum Rotation {
+  ROTATION_0 = 0,
+  ROTATION_90 = 1,
+  ROTATION_180 = 2,
+  ROTATION_270 = 3,
+}
diff --git a/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/RotationQuaternion.aidl b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/RotationQuaternion.aidl
new file mode 100644
index 0000000..d9c8b6e
--- /dev/null
+++ b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/RotationQuaternion.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.automotive.evs;
+@VintfStability
+parcelable RotationQuaternion {
+  float x;
+  float y;
+  float z;
+  float w;
+}
diff --git a/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/SensorPose.aidl b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/SensorPose.aidl
new file mode 100644
index 0000000..4ead9ea
--- /dev/null
+++ b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/SensorPose.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.automotive.evs;
+@VintfStability
+parcelable SensorPose {
+  android.hardware.automotive.evs.RotationQuaternion rotation;
+  android.hardware.automotive.evs.Translation translation;
+}
diff --git a/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/Stream.aidl b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/Stream.aidl
new file mode 100644
index 0000000..a780412
--- /dev/null
+++ b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/Stream.aidl
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.automotive.evs;
+@VintfStability
+parcelable Stream {
+  int id;
+  android.hardware.automotive.evs.StreamType streamType;
+  int width;
+  int height;
+  android.hardware.graphics.common.PixelFormat format;
+  android.hardware.graphics.common.BufferUsage usage;
+  android.hardware.automotive.evs.Rotation rotation;
+}
diff --git a/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/StreamType.aidl b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/StreamType.aidl
new file mode 100644
index 0000000..9819c89
--- /dev/null
+++ b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/StreamType.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.automotive.evs;
+@Backing(type="int") @VintfStability
+enum StreamType {
+  OUTPUT = 0,
+  INPUT = 1,
+}
diff --git a/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/Translation.aidl b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/Translation.aidl
new file mode 100644
index 0000000..488d80f
--- /dev/null
+++ b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/Translation.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.automotive.evs;
+@VintfStability
+parcelable Translation {
+  float x;
+  float y;
+  float z;
+}
diff --git a/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/UltrasonicSensor.aidl b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/UltrasonicSensor.aidl
new file mode 100644
index 0000000..23f81f8
--- /dev/null
+++ b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/UltrasonicSensor.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.automotive.evs;
+@VintfStability
+parcelable UltrasonicSensor {
+  android.hardware.automotive.evs.SensorPose pose;
+  float maxRangeMm;
+  float angleOfMeasurement;
+}
diff --git a/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/UltrasonicsArrayDesc.aidl b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/UltrasonicsArrayDesc.aidl
new file mode 100644
index 0000000..4a98875
--- /dev/null
+++ b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/UltrasonicsArrayDesc.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.automotive.evs;
+@VintfStability
+parcelable UltrasonicsArrayDesc {
+  @utf8InCpp String ultrasonicsArrayId;
+  int maxReadingsPerSensorCount;
+  int maxReceiversCount;
+  android.hardware.automotive.evs.UltrasonicSensor[] sensors;
+}
diff --git a/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/UltrasonicsDataFrameDesc.aidl b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/UltrasonicsDataFrameDesc.aidl
new file mode 100644
index 0000000..35ec84b
--- /dev/null
+++ b/automotive/evs/aidl/aidl_api/android.hardware.automotive.evs/current/android/hardware/automotive/evs/UltrasonicsDataFrameDesc.aidl
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.automotive.evs;
+@VintfStability
+parcelable UltrasonicsDataFrameDesc {
+  long timestampNs;
+  int id;
+  byte[] transmittersIdList;
+  byte[] receiversIdList;
+  int[] receiversReadingsCountList;
+  android.hardware.common.Ashmem waveformsData;
+}
diff --git a/automotive/evs/aidl/android/hardware/automotive/evs/BufferDesc.aidl b/automotive/evs/aidl/android/hardware/automotive/evs/BufferDesc.aidl
new file mode 100644
index 0000000..0604abe
--- /dev/null
+++ b/automotive/evs/aidl/android/hardware/automotive/evs/BufferDesc.aidl
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs;
+
+import android.hardware.graphics.common.HardwareBuffer;
+
+/**
+ * Structure representing an image buffer through our APIs
+ *
+ * In addition to the handle to the graphics memory, we need to retain
+ * the properties of the buffer for easy reference and reconstruction of
+ * an ANativeWindowBuffer object on the remote side of API calls.
+ * (Not least because OpenGL expect an ANativeWindowBuffer* for us as a
+ * texture via eglCreateImageKHR()).
+ */
+@VintfStability
+parcelable BufferDesc {
+    /**
+     * Stable AIDL counter part of AHardwareBuffer.  Please see
+     * hardware/interfaces/graphics/common/aidl/android/hardware/graphics/common/HardwareBuffer.aidl
+     * for more details.
+     */
+    HardwareBuffer buffer;
+    /**
+     * The size of a pixel in the units of bytes.
+     */
+    int pixelSizeBytes;
+    /**
+     * Opaque value from driver
+     */
+    int bufferId;
+    /**
+     * Unique identifier of the physical camera device that produces this buffer.
+     */
+    @utf8InCpp
+    String deviceId;
+    /**
+     * Time that this buffer is being filled in the units of microseconds and must be
+     * obtained from android::elapsedRealtimeNanos() or its equivalents.
+     */
+    long timestamp;
+    /**
+     * Frame metadata.  This is opaque to EvsManager.
+     */
+    byte[] metadata;
+}
diff --git a/automotive/evs/aidl/android/hardware/automotive/evs/CameraDesc.aidl b/automotive/evs/aidl/android/hardware/automotive/evs/CameraDesc.aidl
new file mode 100644
index 0000000..2f500a7
--- /dev/null
+++ b/automotive/evs/aidl/android/hardware/automotive/evs/CameraDesc.aidl
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs;
+
+/**
+ * Structure describing the basic properties of an EVS camera.
+ *
+ * The HAL is responsible for filling out this structure for each
+ * EVS camera in the system.
+ */
+@VintfStability
+parcelable CameraDesc {
+    /**
+     * Unique identifier for camera devices.  This may be a path to detected
+     * camera device; for example, "/dev/video0".
+     */
+    @utf8InCpp
+    String id;
+    /**
+     * Opaque value from driver.  Vendor may use this field to store additional
+     * information; for example, sensor and bridge chip id.
+     */
+    int vendorFlags;
+    /**
+     * Store camera metadata such as lens characteristics.
+     */
+    byte[] metadata;
+}
diff --git a/automotive/evs/aidl/android/hardware/automotive/evs/CameraParam.aidl b/automotive/evs/aidl/android/hardware/automotive/evs/CameraParam.aidl
new file mode 100644
index 0000000..15500b2
--- /dev/null
+++ b/automotive/evs/aidl/android/hardware/automotive/evs/CameraParam.aidl
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs;
+
+/**
+ * EVS camera parameter
+ */
+@VintfStability
+@Backing(type="int")
+enum CameraParam {
+    /**
+     * The brightness of image frames
+     */
+    BRIGHTNESS,
+    /**
+     * The contrast of image frames
+     */
+    CONTRAST,
+    /**
+     * Automatic gain/exposure control
+     */
+    AUTOGAIN,
+    /**
+     * Gain control
+     */
+    GAIN,
+    /**
+     * Automatic Whitebalance
+     */
+    AUTO_WHITE_BALANCE,
+    /**
+     * Manual white balance setting as a color temperature in Kelvin.
+     */
+    WHITE_BALANCE_TEMPERATURE,
+    /**
+     * Image sharpness adjustment
+     */
+    SHARPNESS,
+    /**
+     * Auto Exposure Control modes; auto, manual, shutter priority, or
+     * aperture priority.
+     */
+    AUTO_EXPOSURE,
+    /**
+     * Manual exposure time of the camera
+     */
+    ABSOLUTE_EXPOSURE,
+    /**
+     * Sets the focal point of the camera to the specified position.  This
+     * parameter may not be effective when auto focus is enabled.
+     */
+    ABSOLUTE_FOCUS,
+    /**
+     * Enables continuous automatic focus adjustments.
+     */
+    AUTO_FOCUS,
+    /**
+     * Specifies the objective lens focal length as an absolute value.
+     */
+    ABSOLUTE_ZOOM,
+}
diff --git a/automotive/evs/aidl/android/hardware/automotive/evs/DeviceStatus.aidl b/automotive/evs/aidl/android/hardware/automotive/evs/DeviceStatus.aidl
new file mode 100644
index 0000000..535ace3
--- /dev/null
+++ b/automotive/evs/aidl/android/hardware/automotive/evs/DeviceStatus.aidl
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs;
+
+import android.hardware.automotive.evs.DeviceStatusType;
+
+/**
+ * The status of the devices, as sent by EVS HAL through the
+ * IEvsEnumeratorCallback::deviceStatusChanged() call.
+ */
+@VintfStability
+parcelable DeviceStatus {
+    /**
+     * The identifier of a device that has transitioned to a new status.
+     */
+    @utf8InCpp
+    String id;
+    /**
+     * A new status of this device
+     */
+    DeviceStatusType status;
+}
diff --git a/automotive/evs/aidl/android/hardware/automotive/evs/DeviceStatusType.aidl b/automotive/evs/aidl/android/hardware/automotive/evs/DeviceStatusType.aidl
new file mode 100644
index 0000000..902b31b
--- /dev/null
+++ b/automotive/evs/aidl/android/hardware/automotive/evs/DeviceStatusType.aidl
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs;
+
+/**
+ * The status of the devices available through the EVS
+ */
+@VintfStability
+@Backing(type="int")
+enum DeviceStatusType {
+    /**
+     * A camera device is available and ready to be used.
+     */
+    CAMERA_AVAILABLE,
+    /**
+     * A camera device is not available; e.g. disconnected from the system.
+     */
+    CAMERA_NOT_AVAILABLE,
+    /**
+     * A display device is available and ready to be used.
+     */
+    DISPLAY_AVAILABLE,
+    /**
+     * A display device is not available; e.g. disconnected from the
+     * system.
+     */
+    DISPLAY_NOT_AVAILABLE,
+}
diff --git a/automotive/evs/aidl/android/hardware/automotive/evs/DisplayDesc.aidl b/automotive/evs/aidl/android/hardware/automotive/evs/DisplayDesc.aidl
new file mode 100644
index 0000000..0b4243b
--- /dev/null
+++ b/automotive/evs/aidl/android/hardware/automotive/evs/DisplayDesc.aidl
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs;
+
+import android.hardware.automotive.evs.Rotation;
+
+/**
+ * Structure describing the basic properties of an EVS display
+ *
+ * The HAL is responsible for filling out this structure to describe
+ * the EVS display. As an implementation detail, this may be a physical
+ * display or a virtual display that is overlaid or mixed with another
+ * presentation device.
+ */
+@VintfStability
+parcelable DisplayDesc {
+    /**
+     * Unique identifier for the display
+     */
+    @utf8InCpp
+    String id;
+    /**
+     * The width of the display
+     */
+    int width;
+    /**
+     * The height of the display
+     */
+    int height;
+    /**
+     * Counterclock-wise orientation of the display
+     */
+    Rotation orientation;
+    /**
+     * Opaque value from driver.  Vendor may use this field to store additional
+     * information; for example, sensor and bridge chip id.
+     */
+    int vendorFlags;
+}
diff --git a/automotive/evs/aidl/android/hardware/automotive/evs/DisplayState.aidl b/automotive/evs/aidl/android/hardware/automotive/evs/DisplayState.aidl
new file mode 100644
index 0000000..c242d2f
--- /dev/null
+++ b/automotive/evs/aidl/android/hardware/automotive/evs/DisplayState.aidl
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs;
+
+/**
+ * States for control of the EVS display
+ *
+ * The DisplayInfo structure describes the basic properties of an EVS display. Any EVS
+ * implementation is required to have one. The HAL is responsible for filling out this
+ * structure to describe the EVS display. As an implementation detail, this may be a
+ * physical display or a virtual display that is overlaid or mixed with another
+ * presentation device.
+ */
+@VintfStability
+@Backing(type="int")
+enum DisplayState {
+    /*
+     * Display has not been requested by any application yet
+     */
+    NOT_OPEN = 0,
+    /*
+     * Display is inhibited
+     */
+    NOT_VISIBLE,
+    /*
+     * Will become visible with next frame
+     */
+    VISIBLE_ON_NEXT_FRAME,
+    /*
+     * Display is currently active
+     */
+    VISIBLE,
+    /*
+     * Driver is in an undefined state.  Interface should be closed.
+     */
+    DEAD,
+}
diff --git a/automotive/evs/aidl/android/hardware/automotive/evs/EvsEventDesc.aidl b/automotive/evs/aidl/android/hardware/automotive/evs/EvsEventDesc.aidl
new file mode 100644
index 0000000..ebff98f
--- /dev/null
+++ b/automotive/evs/aidl/android/hardware/automotive/evs/EvsEventDesc.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs;
+
+import android.hardware.automotive.evs.EvsEventType;
+
+/**
+ * Structure that describes informative events occurred during EVS is streaming
+ */
+@VintfStability
+parcelable EvsEventDesc {
+    /**
+     * Type of an informative event
+     */
+    EvsEventType aType;
+    /**
+     * Device identifier
+     */
+    @utf8InCpp
+    String deviceId;
+    /**
+     * Possible additional vendor information that is opaque to the EvsManager
+     */
+    int[] payload;
+}
diff --git a/automotive/evs/aidl/android/hardware/automotive/evs/EvsEventType.aidl b/automotive/evs/aidl/android/hardware/automotive/evs/EvsEventType.aidl
new file mode 100644
index 0000000..3a493af
--- /dev/null
+++ b/automotive/evs/aidl/android/hardware/automotive/evs/EvsEventType.aidl
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs;
+
+/**
+ * Types of informative streaming events
+ */
+@VintfStability
+@Backing(type="int")
+enum EvsEventType {
+    /**
+     * Video stream is started
+     */
+    STREAM_STARTED = 0,
+    /**
+     * Video stream is stopped
+     */
+    STREAM_STOPPED,
+    /**
+     * Video frame is dropped
+     */
+    FRAME_DROPPED,
+    /**
+     * Timeout happens
+     */
+    TIMEOUT,
+    /**
+     * Camera parameter is changed; payload contains a changed parameter ID and
+     * its value
+     */
+    PARAMETER_CHANGED,
+    /**
+     * Master role has become available
+     */
+    MASTER_RELEASED,
+    /**
+     * Any other erroneous streaming events
+     */
+    STREAM_ERROR,
+}
diff --git a/automotive/evs/aidl/android/hardware/automotive/evs/EvsResult.aidl b/automotive/evs/aidl/android/hardware/automotive/evs/EvsResult.aidl
new file mode 100644
index 0000000..c355be3
--- /dev/null
+++ b/automotive/evs/aidl/android/hardware/automotive/evs/EvsResult.aidl
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs;
+
+/**
+ * Error codes used in EVS HAL interface.
+ */
+@VintfStability
+@Backing(type="int")
+enum EvsResult {
+    OK = 0,
+    /**
+     * Given arguments are invalid
+     */
+    INVALID_ARG,
+    /**
+     * Requested stream is already running
+     */
+    STREAM_ALREADY_RUNNING,
+    /**
+     * Buffer is not available; e.g. failed to allocate
+     */
+    BUFFER_NOT_AVAILABLE,
+    /**
+     * Ownership has been expired or stolen by other clients
+     */
+    OWNERSHIP_LOST,
+    /**
+     * A dependent service fails to handle a request
+     */
+    UNDERLYING_SERVICE_ERROR,
+    /**
+     * Permission denied
+     */
+    PERMISSION_DENIED,
+    /**
+     * Either the camera or the display is not available
+     */
+    RESOURCE_NOT_AVAILABLE,
+    /**
+     * Device or resource busy
+     */
+    RESOURCE_BUSY,
+    /**
+     * A method is not implemented yet
+     */
+    NOT_IMPLEMENTED,
+    /**
+     * Requested functionality is not supported
+     */
+    NOT_SUPPORTED,
+}
diff --git a/automotive/evs/aidl/android/hardware/automotive/evs/IEvsCamera.aidl b/automotive/evs/aidl/android/hardware/automotive/evs/IEvsCamera.aidl
new file mode 100644
index 0000000..080dd75
--- /dev/null
+++ b/automotive/evs/aidl/android/hardware/automotive/evs/IEvsCamera.aidl
@@ -0,0 +1,248 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs;
+
+import android.hardware.automotive.evs.BufferDesc;
+import android.hardware.automotive.evs.CameraDesc;
+import android.hardware.automotive.evs.CameraParam;
+import android.hardware.automotive.evs.IEvsCameraStream;
+import android.hardware.automotive.evs.IEvsDisplay;
+import android.hardware.automotive.evs.ParameterRange;
+
+/**
+ * Represents a single camera and is the primary interface for capturing images.
+ */
+@VintfStability
+interface IEvsCamera {
+    /**
+     * Returns frames that were delivered to the IEvsCameraStream.
+     *
+     * When done consuming a frame delivered to the IEvsCameraStream
+     * interface, it must be returned to the IEvsCamera for reuse.
+     * A small, finite number of buffers are available (possibly as small
+     * as one), and if the supply is exhausted, no further frames may be
+     * delivered until a buffer is returned.
+     *
+     * @param in buffer Buffers to be returned.
+     */
+    void doneWithFrame(in BufferDesc[] buffer);
+
+    /**
+     * Sets to be the primary client forcibly.
+     *
+     * The client, which owns the display, has a high priority and can take over
+     * a primary client role from other clients without the display.
+     *
+     * @param in display IEvsDisplay handle.  If a given display is in either
+     *                   NOT_VISIBLE, VISIBLE_ON_NEXT_FRAME, or VISIBLE state, the
+     *                   calling client is considered as the high priority client
+     *                   and therefore allowed to take over a primary client role from
+     *                   existing primary client.
+     * @throws EvsResult::INVALID_ARG if a given display handle is null or invalid states.
+     */
+    void forcePrimaryClient(in IEvsDisplay display);
+
+    /**
+     * Returns the description of this camera.
+     *
+     * @return The description of this camera.  This must be the same value as
+     *         reported by IEvsEnumerator::getCameraList().
+     */
+    CameraDesc getCameraInfo();
+
+    /**
+     * Request driver specific information from the HAL implementation.
+     *
+     * The values allowed for opaqueIdentifier are driver specific,
+     * but no value passed in may crash the driver.
+     *
+     * @param in opaqueIdentifier An unique identifier of the information to
+     *                            request.
+     * @return Requested information.  Zero-size vector is returned if the driver does
+     *         not recognize a given identifier.
+     * @throws EvsResult::INVALID_ARG for any unrecognized opaqueIdentifier.
+     */
+    byte[] getExtendedInfo(in int opaqueIdentifier);
+
+    /**
+     * Retrieves values of given camera parameter.  The driver must report
+     * EvsResult::INVALID_ARG if a request parameter is not supported.
+     *
+     * @param in id The identifier of camera parameter, CameraParam enum.
+     * @return Values of requested camera parameter, the same number of values as
+     *         backing camera devices.
+     * @throws EvsResult::INVALID_ARG for any unrecognized parameter.
+     *        EvsResult::UNDERLYING_SERVICE_ERROR for any other failures.
+     */
+    int[] getIntParameter(in CameraParam id);
+
+    /**
+     * Requests a valid value range of a camera parameter
+     *
+     * @param in id The identifier of camera parameter, CameraParam enum.
+     * @return ParameterRange of a requested CameraParam
+     */
+    ParameterRange getIntParameterRange(in CameraParam id);
+
+    /**
+     * Retrieves a list of parameters this camera supports.
+     *
+     * @return A list of CameraParam that this camera supports.
+     */
+    CameraParam[] getParameterList();
+
+    /**
+     * Returns the description of the physical camera device that backs this
+     * logical camera.
+     *
+     * If a requested device does not either exist or back this logical device,
+     * this method returns a null camera descriptor.  And, if this is called on
+     * a physical camera device, this method is the same as getCameraInfo()
+     * method if a given device ID is matched.  Otherwise, this will return a
+     * null camera descriptor.
+     *
+     * @param in deviceId Physical camera device identifier string.
+     * @return The description of a member physical camera device.
+     *         This must be the same value as reported by IEvsEnumerator::getCameraList().
+     */
+    CameraDesc getPhysicalCameraInfo(in String deviceId);
+
+    /**
+     * Import external buffers to capture frames
+     *
+     * This API must be called with a physical camera device identifier.
+     *
+     * @param in buffers A list of buffers allocated by the caller.  EvsCamera
+     *                   will use these buffers to capture frames, in addition to
+     *                   other buffers already in its buffer pool.
+     * @return The amount of buffer pool size changes after importing given buffers.
+     */
+    int importExternalBuffers(in BufferDesc[] buffers);
+
+    /**
+     * Requests to pause EVS camera stream events.
+     *
+     * Like stopVideoStream(), events may continue to arrive for some time
+     * after this call returns. Delivered frame buffers must be returned.
+     */
+    void pauseVideoStream();
+
+    /**
+     * Requests to resume EVS camera stream.
+     */
+    void resumeVideoStream();
+
+    /**
+     * Send a driver specific value to the HAL implementation.
+     *
+     * This extension is provided to facilitate car specific
+     * extensions, but no HAL implementation may require this call
+     * in order to function in a default state.
+     * INVALID_ARG is returned if the opaqueValue is not meaningful to
+     * the driver implementation.
+     *
+     * @param in opaqueIdentifier An unique identifier of the information to
+     *                            program.
+     *        in opaqueValue A value to program.
+     * @throws EvsResult::INVALID_ARG if this call fails to set a parameter.
+     */
+    void setExtendedInfo(in int opaqueIdentifier, in byte[] opaqueValue);
+
+    /**
+     * Requests to set a camera parameter.
+     *
+     * Only a request from the primary client will be processed successfully.
+     * When this method is called on a logical camera device, it will be forwarded
+     * to each physical device and, if it fails to program any physical device,
+     * it will return an error code with the same number of effective values as
+     * the number of backing camera devices.
+     *
+     * @param in id The identifier of camera parameter, CameraParam enum.
+     * @param in value A desired parameter value.
+     * @return Programmed parameter values.  This may differ from what the client
+     *         gives if, for example, the driver does not support a target parameter.
+     * @throws EvsResult::INVALID_ARG if either the request is not made by the primary
+     *        client, or a requested parameter is not supported.
+     *        EvsResult::UNDERLYING_SERVICE_ERROR if it fails to program a value by any
+     *        other reason.
+     */
+    int[] setIntParameter(in CameraParam id, in int value);
+
+    /**
+     * Requests to be the primary client.
+     *
+     * When multiple clients subscribe to a single camera hardware and one of
+     * them adjusts a camera parameter such as the contrast, it may disturb
+     * other clients' operations.  Therefore, the client must call this method
+     * to be a primary client.  Once it becomes a primary client, it will be able to
+     * change camera parameters until either it dies or explicitly gives up the
+     * role.
+     *
+     * @throws EvsResult::OWNERSHIP_LOST if there is already the primary client.
+     */
+    void setPrimaryClient();
+
+    /**
+     * Specifies the depth of the buffer chain the camera is asked to support.
+     *
+     * Up to this many frames may be held concurrently by the client of IEvsCamera.
+     * If this many frames have been delivered to the receiver without being returned
+     * by doneWithFrame, the stream must skip frames until a buffer is returned for reuse.
+     * It is legal for this call to come at any time, even while streams are already running,
+     * in which case buffers should be added or removed from the chain as appropriate.
+     * If no call is made to this entry point, the IEvsCamera must support at least one
+     * frame by default. More is acceptable.
+     *
+     * @param in bufferCount Number of buffers the client of IEvsCamera may hold concurrently.
+     * @throws EvsResult::BUFFER_NOT_AVAILABLE if the client cannot increase the max frames.
+     *        EvsResult::INVALID_ARG if the client cannot decrease the max frames.
+     *        EvsResult::OWNERSHIP_LOST if we lost an ownership of a target camera.
+     */
+    void setMaxFramesInFlight(in int bufferCount);
+
+    /**
+     * Request to start EVS camera stream from this camera.
+     *
+     * The IEvsCameraStream must begin receiving calls with various events
+     * including new image frame ready until stopVideoStream() is called.
+     *
+     * @param in receiver IEvsCameraStream implementation.
+     * @throws EvsResult::OWNERSHIP_LOST if we lost an ownership of a target camera.
+     *        EvsResult::STREAM_ALREADY_RUNNING if a video stream has been started already.
+     *        EvsResult::BUFFER_NOT_AVAILABLE if it fails to secure a minimum number of
+     *        buffers to run a video stream.
+     *        EvsResult::UNDERLYING_SERVICE_ERROR for all other failures.
+     */
+    void startVideoStream(in IEvsCameraStream receiver);
+
+    /**
+     * Stop the delivery of EVS camera frames.
+     *
+     * Because delivery is asynchronous, frames may continue to arrive for
+     * some time after this call returns. Each must be returned until the
+     * closure of the stream is signaled to the IEvsCameraStream.
+     * This function cannot fail and is simply ignored if the stream isn't running.
+     */
+    void stopVideoStream();
+
+    /**
+     * Retires from the primary client role.
+     *
+     * @throws EvsResult::INVALID_ARG if the caller client is not a primary client.
+     */
+    void unsetPrimaryClient();
+}
diff --git a/automotive/evs/aidl/android/hardware/automotive/evs/IEvsCameraStream.aidl b/automotive/evs/aidl/android/hardware/automotive/evs/IEvsCameraStream.aidl
new file mode 100644
index 0000000..2c2b44c
--- /dev/null
+++ b/automotive/evs/aidl/android/hardware/automotive/evs/IEvsCameraStream.aidl
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs;
+
+import android.hardware.automotive.evs.BufferDesc;
+import android.hardware.automotive.evs.EvsEventDesc;
+import android.hardware.graphics.common.HardwareBuffer;
+
+/**
+ * Implemented on client side to receive asynchronous streaming event deliveries.
+ */
+@VintfStability
+oneway interface IEvsCameraStream {
+    /**
+     * Receives calls from the HAL each time video frames is ready for inspection.
+     * Buffer handles received by this method must be returned via calls to
+     * IEvsCamera::doneWithFrame(). When the video stream is stopped via a call
+     * to IEvsCamera::stopVideoStream(), this callback may continue to happen for
+     * some time as the pipeline drains. Each frame must still be returned.
+     * When the last frame in the stream has been delivered, STREAM_STOPPED
+     * event must be delivered.  No further frame deliveries may happen
+     * thereafter.
+     *
+     * A camera device will deliver the same number of frames as number of
+     * backing physical camera devices; it means, a physical camera device
+     * sends always a single frame and a logical camera device sends multiple
+     * frames as many as number of backing physical camera devices.
+     *
+     * @param in buffer Buffer descriptors of delivered image frames.
+     */
+    void deliverFrame(in BufferDesc[] buffer);
+
+    /**
+     * Receives calls from the HAL each time an event happens.
+     *
+     * @param in event EVS event with possible event information.
+     */
+    void notify(in EvsEventDesc event);
+}
diff --git a/automotive/evs/aidl/android/hardware/automotive/evs/IEvsDisplay.aidl b/automotive/evs/aidl/android/hardware/automotive/evs/IEvsDisplay.aidl
new file mode 100644
index 0000000..8d57014
--- /dev/null
+++ b/automotive/evs/aidl/android/hardware/automotive/evs/IEvsDisplay.aidl
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs;
+
+import android.hardware.automotive.evs.BufferDesc;
+import android.hardware.automotive.evs.DisplayDesc;
+import android.hardware.automotive.evs.DisplayState;
+
+/**
+ * Represents a single display.
+ */
+@VintfStability
+interface IEvsDisplay {
+    /**
+     * Returns the description of this display.
+     *
+     * @return The information of this display including id, current mode, current state,
+     *         and additional vendor-specific information.
+     * @throws EvsResult::UNDERLYING_SERVICE_ERROR if it fails to read a display information.
+     */
+    DisplayDesc getDisplayInfo();
+
+    /**
+     * This call requests the current state of the display
+     *
+     * The HAL implementation should report the actual current state, which might
+     * transiently differ from the most recently requested state. Note, however, that
+     * the logic responsible for changing display states should generally live above
+     * the device layer, making it undesirable for the HAL implementation to spontaneously
+     * change display states.
+     *
+     * @return Current DisplayState of this Display.
+     */
+    DisplayState getDisplayState();
+
+    /**
+     * This call returns a handle to a frame buffer associated with the display.
+     *
+     * @return A handle to a frame buffer.  The returned buffer may be locked and
+     *         written to by software and/or GL.  This buffer must be returned via
+     *         a call to returnTargetBufferForDisplay() even if the display is no
+     *         longer visible.
+     * @throws EvsResult::OWNERSHIP_LOST if a display is in DisplayState::DEAD.
+     *        EvsResult::BUFFER_NOT_AVAILABLE if no buffer is available.
+     *        EvsResult::UNDERLYING_SERVICE_ERROR for any other failures.
+     */
+    BufferDesc getTargetBuffer();
+
+    /**
+     * This call tells the display that the buffer is ready for display.
+     *
+     * The buffer is no longer valid for use by the client after this call.
+     * There is no maximum time the caller may hold onto the buffer before making this
+     * call. The buffer may be returned at any time and in any DisplayState, but all
+     * buffers are expected to be returned before the IEvsDisplay interface is destroyed.
+     *
+     * @param in buffer A buffer handle to the frame that is ready for display.
+     * @throws EvsResult::INVALID_ARG if a given buffer is unknown or invalid.
+     *        EvsResult::OWNERSHIP_LOST if a display is in DisplayState::DEAD.
+     *        EvsResult::UNDERLYING_SERVICE_ERROR for any other failures.
+     */
+    void returnTargetBufferForDisplay(in BufferDesc buffer);
+
+    /**
+     * Clients may set the display state to express their desired state.
+     *
+     * The HAL implementation must gracefully accept a request for any state while in
+     * any other state, although the response may be to defer or ignore the request. The display
+     * is defined to start in the NOT_VISIBLE state upon initialization. The client is
+     * then expected to request the VISIBLE_ON_NEXT_FRAME state, and then begin providing
+     * video. When the display is no longer required, the client is expected to request
+     * the NOT_VISIBLE state after passing the last video frame.
+     * Returns INVALID_ARG if the requested state is not a recognized value.
+     *
+     * @param in state Desired new DisplayState.
+     * @throws EvsResult::INVALID_ARG if a given state is invalid.
+     *        EvsResult::OWNERSHIP_LOST if a display is in DisplayState::DEAD.
+     */
+    void setDisplayState(in DisplayState state);
+}
diff --git a/automotive/evs/aidl/android/hardware/automotive/evs/IEvsEnumerator.aidl b/automotive/evs/aidl/android/hardware/automotive/evs/IEvsEnumerator.aidl
new file mode 100644
index 0000000..8e380e0
--- /dev/null
+++ b/automotive/evs/aidl/android/hardware/automotive/evs/IEvsEnumerator.aidl
@@ -0,0 +1,166 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs;
+
+import android.hardware.automotive.evs.CameraDesc;
+import android.hardware.automotive.evs.DisplayState;
+import android.hardware.automotive.evs.IEvsCamera;
+import android.hardware.automotive.evs.IEvsDisplay;
+import android.hardware.automotive.evs.IEvsEnumeratorStatusCallback;
+import android.hardware.automotive.evs.IEvsUltrasonicsArray;
+import android.hardware.automotive.evs.Stream;
+import android.hardware.automotive.evs.UltrasonicsArrayDesc;
+
+/**
+ * Provides the mechanism for EVS camera and ultrasonics array discovery
+ */
+@VintfStability
+interface IEvsEnumerator {
+    /**
+     * Return the specified IEvsCamera interface as no longer in use
+     *
+     * When the IEvsCamera object is no longer required, it must be released.
+     * NOTE: Video streaming must be cleanly stopped before making this call.
+     *
+     * @param in carCamera EvsCamera object to be closed.
+     * @throws EvsResult::INVALID_ARG if a given camera object is invalid.
+     */
+    void closeCamera(in IEvsCamera carCamera);
+
+    /**
+     * Return the specified IEvsDisplay interface as no longer in use
+     *
+     * When the IEvsDisplay object is no longer required, it must be released.
+     * NOTE: All buffers must have been returned to the display before making this call.
+     *
+     * @param in display EvsDisplay object to be closed.
+     */
+    void closeDisplay(in IEvsDisplay display);
+
+    /**
+     * Return the specified IEvsUltrasonicsArray interface as no longer in use
+     *
+     * When the IEvsUltrasonicsArray object is no longer required, it must be released.
+     * NOTE: Data streaming must be cleanly stopped before making this call.
+     *
+     * @param in evsUltrasonicsArray EvsUltrasonics array object to be closed.
+     */
+    void closeUltrasonicsArray(in IEvsUltrasonicsArray evsUltrasonicsArray);
+
+    /**
+     * Returns a list of all EVS cameras available to the system
+     *
+     * @return A list of cameras availale for EVS service.
+     * @throws EvsResult::PERMISSION_DENIED if the process is not permitted to enumerate
+     *        camera devices.
+     */
+    CameraDesc[] getCameraList();
+
+    /**
+     * Returns a list of all EVS displays available to the system
+     *
+     * @return Identifiers of available displays.
+     */
+    byte[] getDisplayIdList();
+
+    /**
+     * This call requests the current state of the display
+     *
+     * If there is no open display, this returns DisplayState::NOT_OPEN. otherwise, it returns
+     * the actual state of the active display.  This call is replicated on the IEvsEnumerator
+     * interface in order to allow secondary clients to monitor the state of the EVS display
+     * without acquiring exclusive ownership of the display.
+     *
+     * @return Current DisplayState of this Display.
+     * @throws EvsResult::OWNERSHIP_LOST if current display is inactive
+     *        EvsResult::PERMISSION_DENIED if the process is not permitted to do this operation.
+     */
+    DisplayState getDisplayState();
+
+    /**
+     * Return a list of the stream configurations a target camera device supports
+     *
+     * @param in description A target camera descriptor
+     * @return A list of stream configurations supported by a given camera device
+     */
+    Stream[] getStreamList(in CameraDesc description);
+
+    /**
+     * Returns a list of all ultrasonics array available to the system.
+     * Will return an empty vector if ultrasonics is not supported.
+     *
+     * @return A list of ultrasonics available for EVS service.
+     */
+    UltrasonicsArrayDesc[] getUltrasonicsArrayList();
+
+    /**
+     * Tells whether this is EvsManager or HAL implementation.
+     *
+     * @return False for EvsManager implementations and true for all others.
+     */
+    boolean isHardware();
+
+    /**
+     * Gets the IEvsCamera associated with a cameraId from a CameraDesc
+     *
+     * Given a camera's unique cameraId from CameraDesc, returns the
+     * IEvsCamera interface associated with the specified camera. When
+     * done using the camera, the caller may release it by calling closeCamera().
+     *
+     * @param in cameraId  A unique identifier of the camera.
+     * @param in streamCfg A stream configuration the client wants to use.
+     * @return EvsCamera object associated with a given cameraId.
+     *         Returned object would be null if a camera device does not support a
+     *         given stream configuration or is already configured differently by
+     *         another client.
+     * @throws EvsResult::PERMISSION_DENIED if the process is not permitted to use camera
+     *        devices.
+     *        EveResult::INVALID_ARG if it fails to open a camera with a given id.
+     */
+    IEvsCamera openCamera(in String cameraId, in Stream streamCfg);
+
+    /**
+     * Get exclusive access to IEvsDisplay for the system
+     *
+     * There can be more than one EVS display objects for the system and this function
+     * requests access to the display identified by a given ID. If the target EVS display
+     * is not available or is already in use the old instance shall be closed and give
+     * the new caller exclusive access.
+     * When done using the display, the caller may release it by calling closeDisplay().
+     *
+     * @param in id Target display identifier.
+     * @return EvsDisplay object to be used.
+     * @throws EvsResult::INVALID_ARG if no display with a given id exists
+     */
+    IEvsDisplay openDisplay(in byte id);
+
+    /**
+     * Gets the IEvsUltrasonicsArray associated with a ultrasonicsArrayId from a
+     * UltrasonicsDataDesc
+     *
+     * @param in ultrasonicsArrayId A unique identifier of the ultrasonic array.
+     * @return IEvsUltrasonicsArray object associated with a given ultrasonicsArrayId.
+     */
+    IEvsUltrasonicsArray openUltrasonicsArray(in String ultrasonicsArrayId);
+
+    /**
+     * Registers a callback to listen to devices' status changes
+     *
+     * @param in callback IEvsEnumeratorStatusCallback implementation
+     */
+    void registerStatusCallback(in IEvsEnumeratorStatusCallback callback);
+}
diff --git a/automotive/evs/aidl/android/hardware/automotive/evs/IEvsEnumeratorStatusCallback.aidl b/automotive/evs/aidl/android/hardware/automotive/evs/IEvsEnumeratorStatusCallback.aidl
new file mode 100644
index 0000000..26ccf72
--- /dev/null
+++ b/automotive/evs/aidl/android/hardware/automotive/evs/IEvsEnumeratorStatusCallback.aidl
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs;
+
+import android.hardware.automotive.evs.DeviceStatus;
+
+/**
+ * Implemented on client side to receive asynchronous notifications from
+ * IEvsEnumreator.
+ */
+@VintfStability
+oneway interface IEvsEnumeratorStatusCallback {
+    /**
+     * Receives calls from the HAL each time a status of camera devices is
+     * changed.
+     *
+     * @param in status A list of newly updated device status
+     */
+    void deviceStatusChanged(in DeviceStatus[] status);
+}
diff --git a/automotive/evs/aidl/android/hardware/automotive/evs/IEvsUltrasonicsArray.aidl b/automotive/evs/aidl/android/hardware/automotive/evs/IEvsUltrasonicsArray.aidl
new file mode 100644
index 0000000..40de313
--- /dev/null
+++ b/automotive/evs/aidl/android/hardware/automotive/evs/IEvsUltrasonicsArray.aidl
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs;
+
+import android.hardware.automotive.evs.IEvsUltrasonicsArrayStream;
+import android.hardware.automotive.evs.UltrasonicsArrayDesc;
+import android.hardware.automotive.evs.UltrasonicsDataFrameDesc;
+
+/**
+ * HAL interface for ultrasonics sensor array.
+ */
+@VintfStability
+interface IEvsUltrasonicsArray {
+    /**
+     * Notifies the UltrasonicsDataDesc is consumed that was received from
+     * IEvsUltrasonicsArrayStream
+     *
+     * @param in dataFrameDesc Ultrasonics data descriptor
+     */
+    void doneWithDataFrame(in UltrasonicsDataFrameDesc dataFrameDesc);
+
+    /**
+     * Returns the ultrasonic sensor array information
+     *
+     * @throws The description of this ultrasonic array. This must be the same
+     *        value as reported by IEvsEnumerator::getUltrasonicsArrayList().
+     */
+    UltrasonicsArrayDesc getUltrasonicArrayInfo();
+
+    /**
+     * Specifies the depth of the buffer chain the ultrasonic sensors is
+     * asked to support
+     *
+     * Up to this many data frames may be held concurrently by the client of IEvsUltrasonicsArray.
+     * If this many frames have been delivered to the receiver without being returned
+     * by doneWithFrame, the stream must skip frames until a buffer is returned for reuse.
+     * It is legal for this call to come at any time, even while streams are already running,
+     * in which case buffers should be added or removed from the chain as appropriate.
+     * If no call is made to this entry point, the IEvsUltrasonicsArray must support at least one
+     * data frame by default. More is acceptable.
+     *
+     * @param in bufferCount Number of buffers the client of IEvsUltrasonicsArray may hold
+     *           concurrently.
+     * @throws EvsResult::INVALID_ARG on invalid bufferCount.
+     */
+    void setMaxFramesInFlight(in int bufferCount);
+
+    /**
+     * Requests to start the stream
+     *
+     * @param in stream Implementation of IEvsUltrasonicsArrayStream.
+     * @throws EvsResult::STREAM_ALREADY_RUNNING if stream is already running
+     */
+    void startStream(in IEvsUltrasonicsArrayStream stream);
+
+    /**
+     * Requests to stop the delivery of the ultrasonic array data frames
+     *
+     * Because delivery is asynchronous, frames may continue to arrive for
+     * some time after this call returns. Each must be returned until the
+     * closure of the stream is signaled to the IEvsCameraStream.
+     * This function cannot fail and is ignored if the stream isn't running.
+     */
+    void stopStream();
+}
diff --git a/automotive/evs/aidl/android/hardware/automotive/evs/IEvsUltrasonicsArrayStream.aidl b/automotive/evs/aidl/android/hardware/automotive/evs/IEvsUltrasonicsArrayStream.aidl
new file mode 100644
index 0000000..bc31a6b
--- /dev/null
+++ b/automotive/evs/aidl/android/hardware/automotive/evs/IEvsUltrasonicsArrayStream.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs;
+
+import android.hardware.automotive.evs.EvsEventDesc;
+import android.hardware.automotive.evs.UltrasonicsDataFrameDesc;
+
+/**
+ * Implemented on client side to receive asynchronous ultrasonic data
+ * deliveries.
+ */
+@VintfStability
+interface IEvsUltrasonicsArrayStream {
+    /**
+     * Receives calls from the HAL each time a data frame is ready
+     *
+     * @param in dataFrameDesc Ultrasonic array data frame descriptor
+     */
+    oneway void deliverDataFrame(in UltrasonicsDataFrameDesc dataFrameDesc);
+
+    /**
+     * Receives calls from the HAL each time an event happens
+     *
+     * @param in event Event EVS event with possible event information
+     */
+    oneway void notify(in EvsEventDesc event);
+}
diff --git a/automotive/evs/aidl/android/hardware/automotive/evs/ParameterRange.aidl b/automotive/evs/aidl/android/hardware/automotive/evs/ParameterRange.aidl
new file mode 100644
index 0000000..b08fcbd
--- /dev/null
+++ b/automotive/evs/aidl/android/hardware/automotive/evs/ParameterRange.aidl
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs;
+
+/**
+ * Represent a valid range of CameraParam
+ */
+@VintfStability
+parcelable ParameterRange {
+    /**
+     * Lower bound of a valid value range
+     */
+    int min;
+    /**
+     * Upper bound of a valid value range
+     */
+    int max;
+    /**
+     * A value of unit increment
+     */
+    int step;
+}
diff --git a/automotive/evs/aidl/android/hardware/automotive/evs/Rotation.aidl b/automotive/evs/aidl/android/hardware/automotive/evs/Rotation.aidl
new file mode 100644
index 0000000..dede39e
--- /dev/null
+++ b/automotive/evs/aidl/android/hardware/automotive/evs/Rotation.aidl
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs;
+
+/**
+ * Rotation:
+ *
+ * The required counterclockwise rotation of EVS camera stream and display.
+ */
+@VintfStability
+@Backing(type="int")
+enum Rotation {
+    /** No rotation */
+    ROTATION_0 = 0,
+    /** Rotate by 90 degree counterclockwise */
+    ROTATION_90 = 1,
+    /** Rotate by 180 degree counterclockwise */
+    ROTATION_180 = 2,
+    /** Rotate by 270 degree counterclockwise */
+    ROTATION_270 = 3
+
+}
diff --git a/automotive/evs/aidl/android/hardware/automotive/evs/RotationQuaternion.aidl b/automotive/evs/aidl/android/hardware/automotive/evs/RotationQuaternion.aidl
new file mode 100644
index 0000000..b80343b
--- /dev/null
+++ b/automotive/evs/aidl/android/hardware/automotive/evs/RotationQuaternion.aidl
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs;
+
+/**
+ * Structure for rotation expressed as quaternions.
+ * Convention used: Unit quaternion with hamilton convention.
+ */
+@VintfStability
+parcelable RotationQuaternion {
+    float x;
+    float y;
+    float z;
+    float w;
+}
diff --git a/automotive/evs/aidl/android/hardware/automotive/evs/SensorPose.aidl b/automotive/evs/aidl/android/hardware/automotive/evs/SensorPose.aidl
new file mode 100644
index 0000000..26c3339
--- /dev/null
+++ b/automotive/evs/aidl/android/hardware/automotive/evs/SensorPose.aidl
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs;
+
+import android.hardware.automotive.evs.RotationQuaternion;
+import android.hardware.automotive.evs.Translation;
+
+/**
+ * Provides the orientation and location of a car sensor relative to the android automotive
+ * coordinate system:
+ * https://source.android.com/devices/sensors/sensor-types#auto_axes
+ * The sensor pose defines the transformation to be applied to the android automotive axes to
+ * obtain the sensor local axes.
+ * The pose consists of rotation, (specified as a quaternions) and translation
+ * (vector with x, y, z).
+ * This rotation and translation applied to the sensor data in the sensor's local coordinate
+ * system transform the data to the automotive coordinate system.
+ * i.e.  loc =  ( Rot * Psensor ) + Trans
+ * Here loc is a point in automotive coordinate system and Psensor is a point in the sensor's
+ * coordinate system.
+ * Example:
+ * For a sensor on the front bumper and on the left corner of the car with its X axis pointing to
+ * the front, the sensor is located at (-2, 4, 0) meters w.r.t android automotive axes and the
+ * sensor local axes has a rotation of 90 degrees counter-clockwise w.r.t android automotive axes
+ * when viewing the car from top on the +Z axis side:
+ *
+ *      ↑X sensor
+ *    Y←∘______
+ *      |      |  front
+ *      | car  |
+ *      |  ↑Y  |
+ *      |  ∘→X |  rear
+ *      |______|
+ *
+ * For this example the rotation and translation will be:
+ * Rotation = + 90 degrees around Z axis = (0.7071, 0, 0, 0.7071) as a unit quaternion.
+ * Translation = (-2, 4, 0) in meters = (-2000, 4000, 0) in milli-meters.
+ * Note: Every sensor type must specify its own pose.
+ */
+@VintfStability
+parcelable SensorPose {
+    /**
+     * Rotation part of the sensor pose, expressed as a unit quaternion.
+     */
+    RotationQuaternion rotation;
+    /**
+     * Translation part of the sensor pose, in (x, y, z) format with milli-meter units.
+     */
+    Translation translation;
+}
diff --git a/automotive/evs/aidl/android/hardware/automotive/evs/Stream.aidl b/automotive/evs/aidl/android/hardware/automotive/evs/Stream.aidl
new file mode 100644
index 0000000..ae5c7f0
--- /dev/null
+++ b/automotive/evs/aidl/android/hardware/automotive/evs/Stream.aidl
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs;
+
+import android.hardware.automotive.evs.Rotation;
+import android.hardware.automotive.evs.StreamType;
+import android.hardware.graphics.common.BufferUsage;
+import android.hardware.graphics.common.PixelFormat;
+
+/**
+ * Stream:
+ *
+ * Structure that describes a EVS Camera stream
+ */
+@VintfStability
+parcelable Stream {
+    /**
+     * Stream ID - a non-negative integer identifier for a stream.
+     *
+     * The identical stream ID must reference the same stream, with the same
+     * width/height/format, across consecutive calls to configureStreams.
+     *
+     * If previously-used stream ID is not used in a new call to
+     * configureStreams, then that stream is no longer active. Such a stream ID
+     * may be reused in a future configureStreams with a new
+     * width/height/format.
+     *
+     */
+    int id;
+    /**
+     * The type of the stream (input vs output, etc).
+     */
+    StreamType streamType;
+    /**
+     * The width in pixels of the buffers in this stream.
+     */
+    int width;
+    /**
+     * The height in pixels of the buffers in this stream.
+     */
+    int height;
+    /**
+     * The frame rate of this stream in frames-per-second
+     /
+    int framerate;
+    /**
+     * The pixel format form the buffers in this stream.
+     */
+    PixelFormat format;
+    /**
+     * The gralloc usage flags for this stream, as needed by the consumer of
+     * the stream.
+     */
+    BufferUsage usage;
+    /**
+     * The required output rotation of the stream.
+     *
+     * This must be inspected by HAL along with stream with and height.
+     */
+    Rotation rotation;
+}
diff --git a/automotive/evs/aidl/android/hardware/automotive/evs/StreamType.aidl b/automotive/evs/aidl/android/hardware/automotive/evs/StreamType.aidl
new file mode 100644
index 0000000..c028a5c
--- /dev/null
+++ b/automotive/evs/aidl/android/hardware/automotive/evs/StreamType.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs;
+
+/**
+ * StreamType:
+ *
+ * The type of the camera stream, which defines whether the EVS client device is
+ * the producer or the consumer for that stream, and how the buffers of the
+ * stream relate to the other streams.
+ */
+@VintfStability
+@Backing(type="int")
+enum StreamType {
+    /**
+     * This stream is an output stream; the EVS HAL device must fill buffers
+     * from this stream with newly captured or reprocessed image data.
+     */
+    OUTPUT = 0,
+
+    /**
+     * This stream is an input stream; the EVS HAL device must read buffers
+     * from this stream and send them through the camera processing pipeline,
+     * as if the buffer was a newly captured image from the imager.
+     */
+    INPUT = 1
+}
diff --git a/automotive/evs/aidl/android/hardware/automotive/evs/Translation.aidl b/automotive/evs/aidl/android/hardware/automotive/evs/Translation.aidl
new file mode 100644
index 0000000..14b14db
--- /dev/null
+++ b/automotive/evs/aidl/android/hardware/automotive/evs/Translation.aidl
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs;
+
+/**
+ * Structure for translation with x, y and z units.
+ */
+@VintfStability
+parcelable Translation {
+    float x;
+    float y;
+    float z;
+}
diff --git a/automotive/evs/aidl/android/hardware/automotive/evs/UltrasonicSensor.aidl b/automotive/evs/aidl/android/hardware/automotive/evs/UltrasonicSensor.aidl
new file mode 100644
index 0000000..712411b
--- /dev/null
+++ b/automotive/evs/aidl/android/hardware/automotive/evs/UltrasonicSensor.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs;
+
+import android.hardware.automotive.evs.SensorPose;
+
+/**
+ * Structure that contains all information of an ultrasonic sensor.
+ */
+@VintfStability
+parcelable UltrasonicSensor {
+    /**
+     * Pose provides the orientation and location of the ultrasonic sensor within the car.
+     * The +Y axis points along the center of the beam spread the X axis to the right and the Z
+     * axis in the up direction.
+     */
+    SensorPose pose;
+    /**
+     * Maximum range of the sensor in milli-metres.
+     */
+    float maxRangeMm;
+    /**
+     * Half-angle of the angle of measurement of the sensor, relative to the
+     * sensor’s x axis, in radians.
+     */
+    float angleOfMeasurement;
+}
diff --git a/automotive/evs/aidl/android/hardware/automotive/evs/UltrasonicsArrayDesc.aidl b/automotive/evs/aidl/android/hardware/automotive/evs/UltrasonicsArrayDesc.aidl
new file mode 100644
index 0000000..d4f0663
--- /dev/null
+++ b/automotive/evs/aidl/android/hardware/automotive/evs/UltrasonicsArrayDesc.aidl
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs;
+
+import android.hardware.automotive.evs.UltrasonicSensor;
+
+/**
+ * Structure identifies and describes an ultrasonics array in the car.
+ *
+ * A ultrasonics array represents a group of ultrasonic sensors within the
+ * car. These may be sensors that are physically connected to the same hardware
+ * control unit or represent a logical group of sensors like front and back.
+ * The HAL is responsible for filling out this structure for each Ultrasonics
+ * Array.
+ */
+@VintfStability
+parcelable UltrasonicsArrayDesc {
+    /**
+     * Unique identifier for the ultrasonic array. This may be a path or name of the
+     * physical control device or a string identifying a logical group of sensors forming an array
+     * such as "front_array" and "back_array".
+     */
+    @utf8InCpp
+    String ultrasonicsArrayId;
+    /**
+     * Maximum number of readings (points on waveform) provided per sensor in
+     * each data frame. Used by client to pre-allocate required memory buffer for
+     * incoming data.
+     */
+    int maxReadingsPerSensorCount;
+    /**
+     * Maximum number of receiver sensors in a data frame. Must be between 1
+     * and sensorCount. Used by client to pre-allocate required memory buffer for
+     * incoming data.
+     */
+    int maxReceiversCount;
+    /**
+     * The order of sensors specified must be in clockwise order around the car, starting
+     * from front left-most sensor.
+     */
+    UltrasonicSensor[] sensors;
+}
diff --git a/automotive/evs/aidl/android/hardware/automotive/evs/UltrasonicsDataFrameDesc.aidl b/automotive/evs/aidl/android/hardware/automotive/evs/UltrasonicsDataFrameDesc.aidl
new file mode 100644
index 0000000..e546db9
--- /dev/null
+++ b/automotive/evs/aidl/android/hardware/automotive/evs/UltrasonicsDataFrameDesc.aidl
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs;
+
+import android.hardware.common.Ashmem;
+
+/**
+ * Structure that describes the data frame received from an ultrasonics array.
+ *
+ * Each data frame returned consists of received waveform signals from a subset
+ * of sensors in an array as indicated by the receiversIdList. The signal is
+ * transmitted at a particular time instant indicated by timestampNs from a
+ * subset of sensors in the array as provided in the transmittersIdList.
+ */
+@VintfStability
+parcelable UltrasonicsDataFrameDesc {
+    /**
+     * Timestamp of the start of the transmit signal for this data frame.
+     * Timestamp unit is nanoseconds and is obtained from android::elapsedRealtimeNanos().
+     * timeOfFlight readings are future-deltas to this timestamp.
+     */
+    long timestampNs;
+    /**
+     * Identifier of data frame. Used by implementation for managing multiple frames in flight.
+     */
+    int id;
+    /**
+     * List of indexes of sensors in range [0, sensorCount - 1] that
+     * transmitted the signal for this data frame.
+     */
+    byte[] transmittersIdList;
+    /**
+     * List of indexes of sensors in range [0, sensorCount - 1] that received
+     * the signal. The order of ids must match the order of the waveforms in the
+     * waveformsData.
+     * Size of list is upper bound by maxReceiversCount.
+     */
+    byte[] receiversIdList;
+    /**
+     * List of the number of readings corresponding to each ultrasonics sensor in
+     * the receiversIdList. Order of the readings count must match the order in
+     * receiversIdList.
+     * Size of list is upper bound by maxReadingsPerSensorCount.
+     */
+    int[] receiversReadingsCountList;
+    /**
+     * Shared memory object containing the waveforms data. Contains one waveform
+     * for each sensor specified in receiversIdList, in order.
+     * Each waveform is represented by a number of readings, which are sample
+     * points on the waveform. The number of readings for each waveform is as
+     * specified in the receiversReadingsCountList.
+     * Each reading is a pair of time Of flight and resonance.
+     * Time of flight (float): Time between transmit and receive signal in nanoseconds.
+     * Resonance (float): Resonance at time on waveform in range [0.0, 1.0].
+     *
+     * The structure of shared memory (example with 2 waveforms, each with 2 readings):
+     *
+     * Byte: |   0    |  1-4  |  5-8  | 9-12  | 13-16 ||   17   |  18-21 | 22-25  | 26-29 | 30-33 |
+     * Data: | RecId1 | TOF1  | RES1  | TOF2  | RES2  || RecId2 |  TOF1  |  RES1  | TOF2  | RES2  |
+     *       |              Waveform1                 ||             Waveform2                    |
+     * Here:
+     * RecId : Receiver's Id. Order matches the receiversIdList, type uint8_t
+     * TOF : Time of flight, type float (4 bytes)
+     * RES : Resonance, type float (4 bytes)
+     * Note: All readings and waveforms are contigious with no padding.
+     */
+    Ashmem waveformsData;
+}
diff --git a/automotive/evs/aidl/impl/Android.bp b/automotive/evs/aidl/impl/Android.bp
new file mode 100644
index 0000000..7eb0116
--- /dev/null
+++ b/automotive/evs/aidl/impl/Android.bp
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package {
+    default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
+cc_defaults {
+    name: "EvsHalDefaults",
+    static_libs: [
+        "android.hardware.automotive.evs-V1-ndk",
+        "android.hardware.common-V2-ndk",
+        "android.hardware.graphics.common-V3-ndk",
+    ],
+    shared_libs: [
+        "libbase",
+        "liblog",
+        "libutils",
+    ],
+    cflags: [
+        "-Wall",
+        "-Wextra",
+        "-Werror",
+        "-Wthread-safety",
+    ],
+}
diff --git a/automotive/evs/aidl/impl/default/Android.bp b/automotive/evs/aidl/impl/default/Android.bp
new file mode 100644
index 0000000..dbe0314
--- /dev/null
+++ b/automotive/evs/aidl/impl/default/Android.bp
@@ -0,0 +1,36 @@
+// Copyright (C) 2022 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//       http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "hardware_interfaces_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["hardware_interfaces_license"],
+}
+
+cc_binary {
+    name: "android.hardware.automotive.evs-aidl-default-service",
+    defaults: ["EvsHalDefaults"],
+    local_include_dirs: ["include"],
+    vintf_fragments: ["evs-default-service.xml"],
+    init_rc: ["evs-default-service.rc"],
+    vendor: true,
+    relative_install_path: "hw",
+    srcs: ["src/*.cpp"],
+    shared_libs: [
+        "libbinder_ndk",
+    ],
+}
diff --git a/automotive/evs/aidl/impl/default/evs-default-service.rc b/automotive/evs/aidl/impl/default/evs-default-service.rc
new file mode 100644
index 0000000..ea8e689
--- /dev/null
+++ b/automotive/evs/aidl/impl/default/evs-default-service.rc
@@ -0,0 +1,5 @@
+service vendor.evs-hal-default /vendor/bin/hw/android.hardware.automotive.evs-aidl-default-service
+    class early_hal
+    user automotive_evs
+    group automotive_evs
+    disabled
diff --git a/automotive/evs/aidl/impl/default/evs-default-service.xml b/automotive/evs/aidl/impl/default/evs-default-service.xml
new file mode 100644
index 0000000..96ff9f6
--- /dev/null
+++ b/automotive/evs/aidl/impl/default/evs-default-service.xml
@@ -0,0 +1,11 @@
+<manifest version="1.0" type="device">
+    <hal format="aidl">
+        <name>android.hardware.automotive.evs</name>
+        <transport>hwbinder</transport>
+        <version>1</version>
+        <interface>
+            <name>IEvsEnumerator</name>
+            <instance>hw/0</instance>
+        </interface>
+    </hal>
+</manifest>
diff --git a/automotive/evs/aidl/impl/default/include/DefaultEvsEnumerator.h b/automotive/evs/aidl/impl/default/include/DefaultEvsEnumerator.h
new file mode 100644
index 0000000..8bcd867
--- /dev/null
+++ b/automotive/evs/aidl/impl/default/include/DefaultEvsEnumerator.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef android_hardware_automotive_evs_aidl_impl_evshal_include_DefaultEvsHal_H_
+#define android_hardware_automotive_evs_aidl_impl_evshal_include_DefaultEvsHal_H_
+
+#include <aidl/android/hardware/automotive/evs/BnEvsEnumerator.h>
+
+namespace aidl::android::hardware::automotive::evs::implementation {
+
+class DefaultEvsEnumerator final
+    : public ::aidl::android::hardware::automotive::evs::BnEvsEnumerator {
+    ::ndk::ScopedAStatus isHardware(bool* flag) override;
+    ::ndk::ScopedAStatus openCamera(
+            const std::string& cameraId,
+            const ::aidl::android::hardware::automotive::evs::Stream& streamConfig,
+            std::shared_ptr<::aidl::android::hardware::automotive::evs::IEvsCamera>* obj) override;
+    ::ndk::ScopedAStatus closeCamera(
+            const std::shared_ptr<::aidl::android::hardware::automotive::evs::IEvsCamera>& obj)
+            override;
+    ::ndk::ScopedAStatus getCameraList(
+            std::vector<::aidl::android::hardware::automotive::evs::CameraDesc>* list) override;
+    ::ndk::ScopedAStatus getStreamList(
+            const ::aidl::android::hardware::automotive::evs::CameraDesc& desc,
+            std::vector<::aidl::android::hardware::automotive::evs::Stream>* _aidl_return) override;
+    ::ndk::ScopedAStatus openDisplay(
+            int8_t displayId,
+            std::shared_ptr<::aidl::android::hardware::automotive::evs::IEvsDisplay>* obj) override;
+    ::ndk::ScopedAStatus closeDisplay(
+            const std::shared_ptr<::aidl::android::hardware::automotive::evs::IEvsDisplay>& obj)
+            override;
+    ::ndk::ScopedAStatus getDisplayIdList(std::vector<uint8_t>* list) override;
+    ::ndk::ScopedAStatus getDisplayState(
+            ::aidl::android::hardware::automotive::evs::DisplayState* state) override;
+    ::ndk::ScopedAStatus registerStatusCallback(
+            const std::shared_ptr<
+                    ::aidl::android::hardware::automotive::evs::IEvsEnumeratorStatusCallback>&
+                    callback) override;
+    ::ndk::ScopedAStatus openUltrasonicsArray(
+            const std::string& id,
+            std::shared_ptr<::aidl::android::hardware::automotive::evs::IEvsUltrasonicsArray>* obj)
+            override;
+    ::ndk::ScopedAStatus closeUltrasonicsArray(
+            const std::shared_ptr<::aidl::android::hardware::automotive::evs::IEvsUltrasonicsArray>&
+                    arr) override;
+    ::ndk::ScopedAStatus getUltrasonicsArrayList(
+            std::vector<::aidl::android::hardware::automotive::evs::UltrasonicsArrayDesc>* list)
+            override;
+};
+
+}  // namespace aidl::android::hardware::automotive::evs::implementation
+
+#endif  // android_hardware_automotive_evs_aidl_impl_evshal_include_DefaultEvsHal_H_
diff --git a/automotive/evs/aidl/impl/default/src/DefaultEvsEnumerator.cpp b/automotive/evs/aidl/impl/default/src/DefaultEvsEnumerator.cpp
new file mode 100644
index 0000000..2ff6d59
--- /dev/null
+++ b/automotive/evs/aidl/impl/default/src/DefaultEvsEnumerator.cpp
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// TODO(b/203661081): Remove below lines to disable compiler warnings.
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wunused-parameter"
+
+#define LOG_TAG "DefaultEvsEnumerator"
+
+#include <DefaultEvsEnumerator.h>
+
+namespace aidl::android::hardware::automotive::evs::implementation {
+
+using ::ndk::ScopedAStatus;
+
+ScopedAStatus DefaultEvsEnumerator::isHardware(bool* flag) {
+    // This returns true always.
+    *flag = true;
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus DefaultEvsEnumerator::openCamera(const std::string& cameraId,
+                                               const Stream& streamConfig,
+                                               std::shared_ptr<IEvsCamera>* obj) {
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus DefaultEvsEnumerator::closeCamera(const std::shared_ptr<IEvsCamera>& obj) {
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus DefaultEvsEnumerator::getCameraList(std::vector<CameraDesc>* list) {
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus DefaultEvsEnumerator::getStreamList(const CameraDesc& desc,
+                                                  std::vector<Stream>* _aidl_return) {
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus DefaultEvsEnumerator::openDisplay(int8_t displayId,
+                                                std::shared_ptr<IEvsDisplay>* obj) {
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus DefaultEvsEnumerator::closeDisplay(const std::shared_ptr<IEvsDisplay>& state) {
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus DefaultEvsEnumerator::getDisplayIdList(std::vector<uint8_t>* list) {
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus DefaultEvsEnumerator::getDisplayState(DisplayState* state) {
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus DefaultEvsEnumerator::registerStatusCallback(
+        const std::shared_ptr<IEvsEnumeratorStatusCallback>& callback) {
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus DefaultEvsEnumerator::openUltrasonicsArray(
+        const std::string& id, std::shared_ptr<IEvsUltrasonicsArray>* obj) {
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus DefaultEvsEnumerator::closeUltrasonicsArray(
+        const std::shared_ptr<IEvsUltrasonicsArray>& obj) {
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus DefaultEvsEnumerator::getUltrasonicsArrayList(
+        std::vector<UltrasonicsArrayDesc>* list) {
+    return ScopedAStatus::ok();
+}
+
+}  // namespace aidl::android::hardware::automotive::evs::implementation
+
+#pragma clang diagnostic pop
diff --git a/automotive/evs/aidl/impl/default/src/service.cpp b/automotive/evs/aidl/impl/default/src/service.cpp
new file mode 100644
index 0000000..0a0913f
--- /dev/null
+++ b/automotive/evs/aidl/impl/default/src/service.cpp
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "EvsService"
+
+#include <DefaultEvsEnumerator.h>
+
+#include <android/binder_manager.h>
+#include <android/binder_process.h>
+#include <utils/Log.h>
+
+using ::aidl::android::hardware::automotive::evs::implementation::DefaultEvsEnumerator;
+
+int main([[maybe_unused]] int argc, [[maybe_unused]] char* argv[]) {
+    std::shared_ptr<DefaultEvsEnumerator> vhal = ndk::SharedRefBase::make<DefaultEvsEnumerator>();
+
+    ALOGI("Registering as service...");
+    binder_exception_t err =
+            AServiceManager_addService(vhal->asBinder().get(), "android.hardware.automotive.evs");
+    if (err != EX_NONE) {
+        ALOGE("failed to register android.hardware.automotive.evs service, exception: %d", err);
+        return 1;
+    }
+
+    if (!ABinderProcess_setThreadPoolMaxThreadCount(1)) {
+        ALOGE("%s", "failed to set thread pool max thread count");
+        return 1;
+    }
+    ABinderProcess_startThreadPool();
+
+    ALOGI("Evs Service Ready");
+
+    ABinderProcess_joinThreadPool();
+
+    ALOGI("Evs Service Exiting");
+
+    return 0;
+}
diff --git a/automotive/evs/aidl/vts/Android.bp b/automotive/evs/aidl/vts/Android.bp
new file mode 100644
index 0000000..980c6d5
--- /dev/null
+++ b/automotive/evs/aidl/vts/Android.bp
@@ -0,0 +1,53 @@
+//
+// Copyright (C) 2022 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+package{
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "hardware_interfaces_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses : ["hardware_interfaces_license"],
+}
+
+cc_test {
+name:
+    "VtsHalEvsTargetTest",
+    srcs: [
+        "*.cpp",
+    ],
+    defaults: [
+        "VtsHalTargetTestDefaults",
+        "use_libaidlvintf_gtest_helper_static",
+    ],
+    shared_libs: [
+        "libbinder_ndk",
+        "libcamera_metadata",
+        "libui",
+        "libutils",
+    ],
+    static_libs: [
+        "android.hardware.automotive.evs@common-default-lib",
+        "android.hardware.automotive.evs-V1-ndk",
+        "android.hardware.common-V2-ndk",
+        "android.hardware.graphics.common-V3-ndk",
+        "libaidlcommonsupport",
+    ],
+    test_suites: [
+        "general-tests",
+        "vts",
+    ],
+}
diff --git a/automotive/evs/aidl/vts/FrameHandler.cpp b/automotive/evs/aidl/vts/FrameHandler.cpp
new file mode 100644
index 0000000..bab832b
--- /dev/null
+++ b/automotive/evs/aidl/vts/FrameHandler.cpp
@@ -0,0 +1,358 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "VtsHalEvsTest"
+
+#include "FrameHandler.h"
+#include "FormatConvert.h"
+
+#include <aidl/android/hardware/graphics/common/HardwareBufferDescription.h>
+#include <aidlcommonsupport/NativeHandle.h>
+#include <android-base/logging.h>
+#include <ui/GraphicBuffer.h>
+#include <ui/GraphicBufferAllocator.h>
+
+using ::aidl::android::hardware::automotive::evs::BufferDesc;
+using ::aidl::android::hardware::automotive::evs::CameraDesc;
+using ::aidl::android::hardware::automotive::evs::EvsEventDesc;
+using ::aidl::android::hardware::automotive::evs::EvsEventType;
+using ::aidl::android::hardware::automotive::evs::IEvsCamera;
+using ::aidl::android::hardware::automotive::evs::IEvsDisplay;
+using ::aidl::android::hardware::graphics::common::HardwareBufferDescription;
+using ::ndk::ScopedAStatus;
+using std::chrono_literals::operator""s;
+
+FrameHandler::FrameHandler(const std::shared_ptr<IEvsCamera>& pCamera, const CameraDesc& cameraInfo,
+                           const std::shared_ptr<IEvsDisplay>& pDisplay, BufferControlFlag mode)
+    : mCamera(pCamera), mCameraInfo(cameraInfo), mDisplay(pDisplay), mReturnMode(mode) {
+    // Nothing but member initialization here.
+}
+
+void FrameHandler::shutdown() {
+    // Make sure we're not still streaming
+    blockingStopStream();
+
+    // At this point, the receiver thread is no longer running, so we can safely drop
+    // our remote object references so they can be freed
+    mCamera = nullptr;
+    mDisplay = nullptr;
+}
+
+bool FrameHandler::startStream() {
+    // Tell the camera to start streaming
+    auto status = mCamera->startVideoStream(ref<FrameHandler>());
+    if (!status.isOk()) {
+        return false;
+    }
+
+    // Mark ourselves as running
+    mLock.lock();
+    mRunning = true;
+    mLock.unlock();
+
+    return true;
+}
+
+void FrameHandler::asyncStopStream() {
+    // Tell the camera to stop streaming.
+    // This will result in a null frame being delivered when the stream actually stops.
+    mCamera->stopVideoStream();
+}
+
+void FrameHandler::blockingStopStream() {
+    // Tell the stream to stop
+    asyncStopStream();
+
+    // Wait until the stream has actually stopped
+    std::unique_lock<std::mutex> lock(mEventLock);
+    if (mRunning) {
+        mEventSignal.wait(lock, [this]() { return !mRunning; });
+    }
+}
+
+bool FrameHandler::returnHeldBuffer() {
+    std::lock_guard<std::mutex> lock(mLock);
+
+    // Return the oldest buffer we're holding
+    if (mHeldBuffers.empty()) {
+        // No buffers are currently held
+        return false;
+    }
+
+    std::vector<BufferDesc> buffers = std::move(mHeldBuffers.front());
+    mHeldBuffers.pop();
+    mCamera->doneWithFrame(buffers);
+
+    return true;
+}
+
+bool FrameHandler::isRunning() {
+    std::lock_guard<std::mutex> lock(mLock);
+    return mRunning;
+}
+
+void FrameHandler::waitForFrameCount(unsigned frameCount) {
+    // Wait until we've seen at least the requested number of frames (could be more)
+    std::unique_lock<std::mutex> lock(mLock);
+    mFrameSignal.wait(lock, [this, frameCount]() { return mFramesReceived >= frameCount; });
+}
+
+void FrameHandler::getFramesCounters(unsigned* received, unsigned* displayed) {
+    std::lock_guard<std::mutex> lock(mLock);
+
+    if (received) {
+        *received = mFramesReceived;
+    }
+    if (displayed) {
+        *displayed = mFramesDisplayed;
+    }
+}
+
+ScopedAStatus FrameHandler::deliverFrame(const std::vector<BufferDesc>& buffers) {
+    mLock.lock();
+    // For VTS tests, FrameHandler uses a single frame among delivered frames.
+    auto bufferIdx = mFramesDisplayed % buffers.size();
+    auto& buffer = buffers[bufferIdx];
+    mLock.unlock();
+
+    // Store a dimension of a received frame.
+    mFrameWidth = buffer.buffer.description.width;
+    mFrameHeight = buffer.buffer.description.height;
+
+    // If we were given an opened display at construction time, then send the received
+    // image back down the camera.
+    bool displayed = false;
+    if (mDisplay) {
+        // Get the output buffer we'll use to display the imagery
+        BufferDesc tgtBuffer;
+        auto status = mDisplay->getTargetBuffer(&tgtBuffer);
+        if (!status.isOk()) {
+            printf("Didn't get target buffer - frame lost\n");
+            LOG(ERROR) << "Didn't get requested output buffer -- skipping this frame.";
+        } else {
+            // Copy the contents of the of buffer.memHandle into tgtBuffer
+            copyBufferContents(tgtBuffer, buffer);
+
+            // Send the target buffer back for display
+            auto status = mDisplay->returnTargetBufferForDisplay(tgtBuffer);
+            if (!status.isOk()) {
+                printf("AIDL error on display buffer (%d)- frame lost\n",
+                       status.getServiceSpecificError());
+                LOG(ERROR) << "Error making the remote function call.  AIDL said "
+                           << status.getServiceSpecificError();
+            } else {
+                // Everything looks good!
+                // Keep track so tests or watch dogs can monitor progress
+                displayed = true;
+            }
+        }
+    }
+
+    mLock.lock();
+    // increases counters
+    ++mFramesReceived;
+    mFramesDisplayed += (int)displayed;
+    mLock.unlock();
+    mFrameSignal.notify_all();
+
+    switch (mReturnMode) {
+        case eAutoReturn:
+            // Send the camera buffer back now that the client has seen it
+            LOG(DEBUG) << "Calling doneWithFrame";
+            mCamera->doneWithFrame(buffers);
+            break;
+        case eNoAutoReturn:
+            // Hang onto the buffer handles for now -- the client will return it explicitly later
+            // mHeldBuffers.push(buffers);
+            break;
+    }
+
+    LOG(DEBUG) << "Frame handling complete";
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus FrameHandler::notify(const EvsEventDesc& event) {
+    // Local flag we use to keep track of when the stream is stopping
+    std::unique_lock<std::mutex> lock(mEventLock);
+    mLatestEventDesc.aType = event.aType;
+    mLatestEventDesc.payload[0] = event.payload[0];
+    mLatestEventDesc.payload[1] = event.payload[1];
+    if (mLatestEventDesc.aType == EvsEventType::STREAM_STOPPED) {
+        // Signal that the last frame has been received and the stream is stopped
+        mRunning = false;
+    } else if (mLatestEventDesc.aType == EvsEventType::PARAMETER_CHANGED) {
+        LOG(DEBUG) << "Camera parameter " << mLatestEventDesc.payload[0] << " is changed to "
+                   << mLatestEventDesc.payload[1];
+    } else {
+        LOG(DEBUG) << "Received an event " << eventToString(mLatestEventDesc.aType);
+    }
+    lock.unlock();
+    mEventSignal.notify_one();
+
+    return ScopedAStatus::ok();
+}
+
+bool FrameHandler::copyBufferContents(const BufferDesc& tgtBuffer, const BufferDesc& srcBuffer) {
+    bool success = true;
+    const HardwareBufferDescription* pSrcDesc =
+            reinterpret_cast<const HardwareBufferDescription*>(&srcBuffer.buffer.description);
+    const HardwareBufferDescription* pTgtDesc =
+            reinterpret_cast<const HardwareBufferDescription*>(&tgtBuffer.buffer.description);
+
+    // Make sure we don't run off the end of either buffer
+    const unsigned width = std::min(pTgtDesc->width, pSrcDesc->width);
+    const unsigned height = std::min(pTgtDesc->height, pSrcDesc->height);
+
+    // FIXME: We duplicate file descriptors twice below; consider using TAKE_HANDLE
+    // instead of CLONE_HANDLE.
+    buffer_handle_t target = ::android::dupFromAidl(tgtBuffer.buffer.handle);
+    ::android::sp<android::GraphicBuffer> tgt = new android::GraphicBuffer(
+            target, android::GraphicBuffer::CLONE_HANDLE, pTgtDesc->width, pTgtDesc->height,
+            static_cast<android::PixelFormat>(pTgtDesc->format), pTgtDesc->layers,
+            static_cast<uint64_t>(pTgtDesc->usage), pTgtDesc->stride);
+
+    buffer_handle_t source = ::android::dupFromAidl(srcBuffer.buffer.handle);
+    ::android::sp<android::GraphicBuffer> src = new android::GraphicBuffer(
+            source, android::GraphicBuffer::CLONE_HANDLE, pSrcDesc->width, pSrcDesc->height,
+            static_cast<android::PixelFormat>(pSrcDesc->format), pSrcDesc->layers,
+            static_cast<uint64_t>(pSrcDesc->usage), pSrcDesc->stride);
+
+    // Lock our source buffer for reading (current expectation are for this to be NV21 format)
+    uint8_t* srcPixels = nullptr;
+    src->lock(GRALLOC_USAGE_SW_READ_OFTEN, (void**)&srcPixels);
+
+    // Lock our target buffer for writing (should be either RGBA8888 or BGRA8888 format)
+    uint32_t* tgtPixels = nullptr;
+    tgt->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, (void**)&tgtPixels);
+
+    if (srcPixels && tgtPixels) {
+        using namespace ::android::hardware::automotive::evs::common;
+        if (static_cast<android_pixel_format_t>(pTgtDesc->format) == HAL_PIXEL_FORMAT_RGBA_8888) {
+            if (static_cast<android_pixel_format_t>(pSrcDesc->format) ==
+                HAL_PIXEL_FORMAT_YCRCB_420_SP) {  // 420SP == NV21
+                Utils::copyNV21toRGB32(width, height, srcPixels, tgtPixels, pTgtDesc->stride);
+            } else if (static_cast<android_pixel_format_t>(pSrcDesc->format) ==
+                       HAL_PIXEL_FORMAT_YV12) {  // YUV_420P == YV12
+                Utils::copyYV12toRGB32(width, height, srcPixels, tgtPixels, pTgtDesc->stride);
+            } else if (static_cast<android_pixel_format_t>(pSrcDesc->format) ==
+                       HAL_PIXEL_FORMAT_YCBCR_422_I) {  // YUYV
+                Utils::copyYUYVtoRGB32(width, height, srcPixels, pSrcDesc->stride, tgtPixels,
+                                       pTgtDesc->stride);
+            } else if (pSrcDesc->format == pTgtDesc->format) {  // 32bit RGBA
+                Utils::copyMatchedInterleavedFormats(width, height, srcPixels, pSrcDesc->stride,
+                                                     tgtPixels, pTgtDesc->stride,
+                                                     tgtBuffer.pixelSizeBytes);
+            } else {
+                LOG(ERROR) << "Camera buffer format is not supported";
+                success = false;
+            }
+        } else if (static_cast<android_pixel_format_t>(pTgtDesc->format) ==
+                   HAL_PIXEL_FORMAT_BGRA_8888) {
+            if (static_cast<android_pixel_format_t>(pSrcDesc->format) ==
+                HAL_PIXEL_FORMAT_YCRCB_420_SP) {  // 420SP == NV21
+                Utils::copyNV21toBGR32(width, height, srcPixels, tgtPixels, pTgtDesc->stride);
+            } else if (static_cast<android_pixel_format_t>(pSrcDesc->format) ==
+                       HAL_PIXEL_FORMAT_YV12) {  // YUV_420P == YV12
+                Utils::copyYV12toBGR32(width, height, srcPixels, tgtPixels, pTgtDesc->stride);
+            } else if (static_cast<android_pixel_format_t>(pSrcDesc->format) ==
+                       HAL_PIXEL_FORMAT_YCBCR_422_I) {  // YUYV
+                Utils::copyYUYVtoBGR32(width, height, srcPixels, pSrcDesc->stride, tgtPixels,
+                                       pTgtDesc->stride);
+            } else if (pSrcDesc->format == pTgtDesc->format) {  // 32bit RGBA
+                Utils::copyMatchedInterleavedFormats(width, height, srcPixels, pSrcDesc->stride,
+                                                     tgtPixels, pTgtDesc->stride,
+                                                     tgtBuffer.pixelSizeBytes);
+            } else {
+                LOG(ERROR) << "Camera buffer format is not supported";
+                success = false;
+            }
+        } else {
+            // We always expect 32 bit RGB for the display output for now.  Is there a need for 565?
+            LOG(ERROR) << "Diplay buffer is always expected to be 32bit RGBA";
+            success = false;
+        }
+    } else {
+        LOG(ERROR) << "Failed to lock buffer contents for contents transfer";
+        success = false;
+    }
+
+    if (srcPixels) {
+        src->unlock();
+    }
+    if (tgtPixels) {
+        tgt->unlock();
+    }
+
+    return success;
+}
+
+void FrameHandler::getFrameDimension(unsigned* width, unsigned* height) {
+    if (width) {
+        *width = mFrameWidth;
+    }
+
+    if (height) {
+        *height = mFrameHeight;
+    }
+}
+
+bool FrameHandler::waitForEvent(const EvsEventDesc& aTargetEvent, EvsEventDesc& aReceivedEvent,
+                                bool ignorePayload) {
+    // Wait until we get an expected parameter change event.
+    std::unique_lock<std::mutex> lock(mEventLock);
+    auto now = std::chrono::system_clock::now();
+    bool found = false;
+    while (!found) {
+        bool result = mEventSignal.wait_until(
+                lock, now + 5s, [this, aTargetEvent, ignorePayload, &aReceivedEvent, &found]() {
+                    found = (mLatestEventDesc.aType == aTargetEvent.aType) &&
+                            (ignorePayload ||
+                             (mLatestEventDesc.payload[0] == aTargetEvent.payload[0] &&
+                              mLatestEventDesc.payload[1] == aTargetEvent.payload[1]));
+
+                    aReceivedEvent.aType = mLatestEventDesc.aType;
+                    aReceivedEvent.payload[0] = mLatestEventDesc.payload[0];
+                    aReceivedEvent.payload[1] = mLatestEventDesc.payload[1];
+                    return found;
+                });
+
+        if (!result) {
+            LOG(WARNING) << "A timer is expired before a target event has happened.";
+            break;
+        }
+    }
+
+    return found;
+}
+
+const char* FrameHandler::eventToString(const EvsEventType aType) {
+    switch (aType) {
+        case EvsEventType::STREAM_STARTED:
+            return "STREAM_STARTED";
+        case EvsEventType::STREAM_STOPPED:
+            return "STREAM_STOPPED";
+        case EvsEventType::FRAME_DROPPED:
+            return "FRAME_DROPPED";
+        case EvsEventType::TIMEOUT:
+            return "TIMEOUT";
+        case EvsEventType::PARAMETER_CHANGED:
+            return "PARAMETER_CHANGED";
+        case EvsEventType::MASTER_RELEASED:
+            return "MASTER_RELEASED";
+        default:
+            return "Unknown";
+    }
+}
diff --git a/automotive/evs/aidl/vts/FrameHandler.h b/automotive/evs/aidl/vts/FrameHandler.h
new file mode 100644
index 0000000..0b959ab
--- /dev/null
+++ b/automotive/evs/aidl/vts/FrameHandler.h
@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef AUTOMOTIVE_EVS_VTS_FRAMEHANDLER_H
+#define AUTOMOTIVE_EVS_VTS_FRAMEHANDLER_H
+
+#include <aidl/android/hardware/automotive/evs/BnEvsCameraStream.h>
+#include <aidl/android/hardware/automotive/evs/EvsEventDesc.h>
+#include <aidl/android/hardware/automotive/evs/IEvsCamera.h>
+#include <aidl/android/hardware/automotive/evs/IEvsDisplay.h>
+
+#include <mutex>
+#include <queue>
+
+/*
+ * FrameHandler:
+ * This class can be used to receive camera imagery from an IEvsCamera implementation.  Given an
+ * IEvsDisplay instance at startup, it will forward the received imagery to the display,
+ * providing a trivial implementation of a rear vew camera type application.
+ * Note that the video frames are delivered on a background thread, while the control interface
+ * is actuated from the applications foreground thread.
+ */
+class FrameHandler : public ::aidl::android::hardware::automotive::evs::BnEvsCameraStream {
+  public:
+    enum BufferControlFlag {
+        eAutoReturn,
+        eNoAutoReturn,
+    };
+
+    FrameHandler(
+            const std::shared_ptr<::aidl::android::hardware::automotive::evs::IEvsCamera>& pCamera,
+            const ::aidl::android::hardware::automotive::evs::CameraDesc& cameraInfo,
+            const std::shared_ptr<::aidl::android::hardware::automotive::evs::IEvsDisplay>&
+                    pDisplay,
+            BufferControlFlag mode = eAutoReturn);
+    virtual ~FrameHandler() {
+        if (mCamera != nullptr) {
+            /* shutdown a camera explicitly */
+            shutdown();
+        }
+    }
+
+    void shutdown();
+    bool startStream();
+    void asyncStopStream();
+    void blockingStopStream();
+    bool returnHeldBuffer();
+    bool isRunning();
+    void waitForFrameCount(unsigned frameCount);
+    bool waitForEvent(const ::aidl::android::hardware::automotive::evs::EvsEventDesc& aTargetEvent,
+                      ::aidl::android::hardware::automotive::evs::EvsEventDesc& aReceivedEvent,
+                      bool ignorePayload = false);
+    void getFramesCounters(unsigned* received, unsigned* displayed);
+    void getFrameDimension(unsigned* width, unsigned* height);
+
+  private:
+    // Methods from ::aidl::android::hardware::automotive::evs::IEvsCameraStream follow.
+    ::ndk::ScopedAStatus deliverFrame(
+            const std::vector<::aidl::android::hardware::automotive::evs::BufferDesc>& buffer)
+            override;
+    ::ndk::ScopedAStatus notify(
+            const ::aidl::android::hardware::automotive::evs::EvsEventDesc& event) override;
+
+    // Local implementation details
+    bool copyBufferContents(
+            const ::aidl::android::hardware::automotive::evs::BufferDesc& tgtBuffer,
+            const ::aidl::android::hardware::automotive::evs::BufferDesc& srcBuffer);
+    const char* eventToString(const ::aidl::android::hardware::automotive::evs::EvsEventType aType);
+
+    std::shared_ptr<::aidl::android::hardware::automotive::evs::IEvsCamera> mCamera;
+    ::aidl::android::hardware::automotive::evs::CameraDesc mCameraInfo;
+    std::shared_ptr<::aidl::android::hardware::automotive::evs::IEvsDisplay> mDisplay;
+    BufferControlFlag mReturnMode;
+
+    // Since we get frames delivered to us asynchronously via the IEvsCameraStream interface,
+    // we need to protect all member variables that may be modified while we're streaming
+    // (ie: those below)
+    std::mutex mLock;
+    std::mutex mEventLock;
+    std::condition_variable mEventSignal;
+    std::condition_variable mFrameSignal;
+    std::queue<std::vector<::aidl::android::hardware::automotive::evs::BufferDesc>> mHeldBuffers;
+
+    bool mRunning = false;
+    unsigned mFramesReceived = 0;   // Simple counter -- rolls over eventually!
+    unsigned mFramesDisplayed = 0;  // Simple counter -- rolls over eventually!
+    unsigned mFrameWidth = 0;
+    unsigned mFrameHeight = 0;
+    ::aidl::android::hardware::automotive::evs::EvsEventDesc mLatestEventDesc;
+};
+
+#endif  // AUTOMOTIVE_EVS_VTS_FRAMEHANDLER_H
diff --git a/automotive/evs/aidl/vts/FrameHandlerUltrasonics.cpp b/automotive/evs/aidl/vts/FrameHandlerUltrasonics.cpp
new file mode 100644
index 0000000..650f0ed
--- /dev/null
+++ b/automotive/evs/aidl/vts/FrameHandlerUltrasonics.cpp
@@ -0,0 +1,123 @@
+/*
+ * Copyright 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "FrameHandlerUltrasonics.h"
+
+#include <aidl/android/hardware/automotive/evs/EvsEventDesc.h>
+#include <aidl/android/hardware/automotive/evs/EvsEventType.h>
+#include <aidl/android/hardware/automotive/evs/IEvsUltrasonicsArray.h>
+#include <aidl/android/hardware/automotive/evs/UltrasonicsDataFrameDesc.h>
+#include <android-base/logging.h>
+
+using ::aidl::android::hardware::automotive::evs::EvsEventDesc;
+using ::aidl::android::hardware::automotive::evs::EvsEventType;
+using ::aidl::android::hardware::automotive::evs::IEvsUltrasonicsArray;
+using ::aidl::android::hardware::automotive::evs::UltrasonicsDataFrameDesc;
+using ::ndk::ScopedAStatus;
+
+namespace {
+
+// Struct used by SerializeWaveformData().
+struct WaveformData {
+    uint8_t receiverId;
+    std::vector<std::pair<float, float>> readings;
+};
+
+}  // namespace
+
+FrameHandlerUltrasonics::FrameHandlerUltrasonics(
+        const std::shared_ptr<IEvsUltrasonicsArray>& pArray)
+    : mEvsUltrasonicsArray(pArray), mReceiveFramesCount(0) {
+    // Nothing but member initialization
+}
+
+ScopedAStatus FrameHandlerUltrasonics::notify(const EvsEventDesc& evsEvent) {
+    switch (evsEvent.aType) {
+        case EvsEventType::STREAM_STARTED:
+        case EvsEventType::STREAM_STOPPED:
+        case EvsEventType::FRAME_DROPPED:
+        case EvsEventType::TIMEOUT:
+            mReceivedEvents.emplace_back(evsEvent);
+            break;
+        default:
+            LOG(ERROR) << "Received unexpected event";
+    }
+
+    return ScopedAStatus::ok();
+}
+
+// De-serializes shared memory to vector of WaveformData.
+// TODO(b/149950362): Add a common library for serializing and deserializing waveform data.
+std::vector<WaveformData> DeSerializeWaveformData(std::vector<uint32_t> recvReadingsCountList,
+                                                  uint8_t* pData) {
+    std::vector<WaveformData> waveformDataList(recvReadingsCountList.size());
+
+    for (int i = 0; i < waveformDataList.size(); i++) {
+        // Set Id
+        memcpy(&waveformDataList[i].receiverId, pData, sizeof(uint8_t));
+        pData += sizeof(uint8_t);
+
+        waveformDataList[i].readings.resize(recvReadingsCountList[i]);
+
+        for (auto& reading : waveformDataList[i].readings) {
+            // Set the time of flight.
+            memcpy(&reading.first, pData, sizeof(float));
+            pData += sizeof(float);
+
+            // Set the resonance.
+            memcpy(&reading.second, pData, sizeof(float));
+            pData += sizeof(float);
+        }
+    }
+    return waveformDataList;
+}
+
+bool DataFrameValidator(const UltrasonicsDataFrameDesc& /*dataFrameDesc*/) {
+    // TODO(b/214026378): implement a method to validate an ultrasonics data frame
+    (void)DeSerializeWaveformData;
+    return true;
+}
+
+ScopedAStatus FrameHandlerUltrasonics::deliverDataFrame(
+        const UltrasonicsDataFrameDesc& dataFrameDesc) {
+    LOG(DEBUG) << "FrameHandlerUltrasonics::receiveFrames";
+
+    mReceiveFramesCount++;
+
+    if (!DataFrameValidator(dataFrameDesc)) {
+        mAllFramesValid = false;
+    }
+
+    // Send done with data frame.
+    mEvsUltrasonicsArray->doneWithDataFrame(dataFrameDesc);
+    return ScopedAStatus::ok();
+}
+
+bool FrameHandlerUltrasonics::checkEventReceived(const EvsEventDesc& evsEvent) {
+    LOG(DEBUG) << "FrameHandlerUltrasonics::checkEventReceived";
+    int size = mReceivedEvents.size();  // work around
+    LOG(DEBUG) << "Received event number: " << size;
+    auto iter = find(mReceivedEvents.begin(), mReceivedEvents.end(), evsEvent);
+    return iter != mReceivedEvents.end();
+}
+
+int FrameHandlerUltrasonics::getReceiveFramesCount() {
+    return mReceiveFramesCount;
+}
+
+bool FrameHandlerUltrasonics::areAllFramesValid() {
+    return mAllFramesValid;
+}
diff --git a/automotive/evs/aidl/vts/FrameHandlerUltrasonics.h b/automotive/evs/aidl/vts/FrameHandlerUltrasonics.h
new file mode 100644
index 0000000..f853a00
--- /dev/null
+++ b/automotive/evs/aidl/vts/FrameHandlerUltrasonics.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef AUTOMOTIVE_EVS_VTS_FRAMEHANDLERULTRASONICS_H
+#define AUTOMOTIVE_EVS_VTS_FRAMEHANDLERULTRASONICS_H
+
+#include <aidl/android/hardware/automotive/evs/BnEvsUltrasonicsArrayStream.h>
+#include <aidl/android/hardware/automotive/evs/IEvsUltrasonicsArray.h>
+
+#include <vector>
+
+class FrameHandlerUltrasonics
+    : public ::aidl::android::hardware::automotive::evs::BnEvsUltrasonicsArrayStream {
+  public:
+    FrameHandlerUltrasonics(
+            const std::shared_ptr<::aidl::android::hardware::automotive::evs::IEvsUltrasonicsArray>&
+                    pArray);
+
+    // Implementation for ::aidl::android::hardware::automotive::evs::IEvsUltrasonicsArrayStream
+    ::ndk::ScopedAStatus notify(
+            const ::aidl::android::hardware::automotive::evs::EvsEventDesc& event) override;
+    ::ndk::ScopedAStatus deliverDataFrame(
+            const ::aidl::android::hardware::automotive::evs::UltrasonicsDataFrameDesc& desc)
+            override;
+
+    bool checkEventReceived(
+            const ::aidl::android::hardware::automotive::evs::EvsEventDesc& evsEvent);
+    int getReceiveFramesCount();
+    bool areAllFramesValid();
+
+  private:
+    std::shared_ptr<::aidl::android::hardware::automotive::evs::IEvsUltrasonicsArray>
+            mEvsUltrasonicsArray;
+    std::vector<::aidl::android::hardware::automotive::evs::EvsEventDesc> mReceivedEvents;
+    int mReceiveFramesCount;
+    bool mAllFramesValid = true;
+};
+
+#endif  // AUTOMOTIVE_EVS_VTS_FRAMEHANDLERULTRASONICS_H
diff --git a/automotive/evs/aidl/vts/OWNERS b/automotive/evs/aidl/vts/OWNERS
new file mode 100644
index 0000000..a104f50
--- /dev/null
+++ b/automotive/evs/aidl/vts/OWNERS
@@ -0,0 +1,3 @@
+#Bug component : 853002
+ankitarora@google.com
+changyeon@google.com
diff --git a/automotive/evs/aidl/vts/VtsHalEvsTargetTest.cpp b/automotive/evs/aidl/vts/VtsHalEvsTargetTest.cpp
new file mode 100644
index 0000000..c709d40
--- /dev/null
+++ b/automotive/evs/aidl/vts/VtsHalEvsTargetTest.cpp
@@ -0,0 +1,2170 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "FrameHandler.h"
+#include "FrameHandlerUltrasonics.h"
+
+#include <aidl/Gtest.h>
+#include <aidl/Vintf.h>
+#include <aidl/android/hardware/automotive/evs/BufferDesc.h>
+#include <aidl/android/hardware/automotive/evs/CameraDesc.h>
+#include <aidl/android/hardware/automotive/evs/CameraParam.h>
+#include <aidl/android/hardware/automotive/evs/DisplayDesc.h>
+#include <aidl/android/hardware/automotive/evs/DisplayState.h>
+#include <aidl/android/hardware/automotive/evs/EvsEventDesc.h>
+#include <aidl/android/hardware/automotive/evs/EvsEventType.h>
+#include <aidl/android/hardware/automotive/evs/EvsResult.h>
+#include <aidl/android/hardware/automotive/evs/IEvsCamera.h>
+#include <aidl/android/hardware/automotive/evs/IEvsDisplay.h>
+#include <aidl/android/hardware/automotive/evs/IEvsEnumerator.h>
+#include <aidl/android/hardware/automotive/evs/IEvsUltrasonicsArray.h>
+#include <aidl/android/hardware/automotive/evs/ParameterRange.h>
+#include <aidl/android/hardware/automotive/evs/Stream.h>
+#include <aidl/android/hardware/automotive/evs/UltrasonicsArrayDesc.h>
+#include <aidl/android/hardware/common/NativeHandle.h>
+#include <aidl/android/hardware/graphics/common/HardwareBufferDescription.h>
+#include <aidl/android/hardware/graphics/common/PixelFormat.h>
+#include <aidlcommonsupport/NativeHandle.h>
+#include <android-base/logging.h>
+#include <android/binder_ibinder.h>
+#include <android/binder_manager.h>
+#include <android/binder_process.h>
+#include <android/binder_status.h>
+#include <system/camera_metadata.h>
+#include <ui/GraphicBuffer.h>
+#include <ui/GraphicBufferAllocator.h>
+#include <utils/Timers.h>
+
+#include <deque>
+#include <thread>
+#include <unordered_set>
+
+namespace {
+
+// These values are called out in the EVS design doc (as of Mar 8, 2017)
+constexpr int kMaxStreamStartMilliseconds = 500;
+constexpr int kMinimumFramesPerSecond = 10;
+constexpr int kSecondsToMilliseconds = 1000;
+constexpr int kMillisecondsToMicroseconds = 1000;
+constexpr float kNanoToMilliseconds = 0.000001f;
+constexpr float kNanoToSeconds = 0.000000001f;
+
+/*
+ * Please note that this is different from what is defined in
+ * libhardware/modules/camera/3_4/metadata/types.h; this has one additional
+ * field to store a framerate.
+ */
+typedef struct {
+    int32_t id;
+    int32_t width;
+    int32_t height;
+    int32_t format;
+    int32_t direction;
+    int32_t framerate;
+} RawStreamConfig;
+constexpr size_t kStreamCfgSz = sizeof(RawStreamConfig) / sizeof(int32_t);
+
+}  // namespace
+
+using ::aidl::android::hardware::automotive::evs::BufferDesc;
+using ::aidl::android::hardware::automotive::evs::CameraDesc;
+using ::aidl::android::hardware::automotive::evs::CameraParam;
+using ::aidl::android::hardware::automotive::evs::DisplayDesc;
+using ::aidl::android::hardware::automotive::evs::DisplayState;
+using ::aidl::android::hardware::automotive::evs::EvsEventDesc;
+using ::aidl::android::hardware::automotive::evs::EvsEventType;
+using ::aidl::android::hardware::automotive::evs::EvsResult;
+using ::aidl::android::hardware::automotive::evs::IEvsCamera;
+using ::aidl::android::hardware::automotive::evs::IEvsDisplay;
+using ::aidl::android::hardware::automotive::evs::IEvsEnumerator;
+using ::aidl::android::hardware::automotive::evs::IEvsUltrasonicsArray;
+using ::aidl::android::hardware::automotive::evs::ParameterRange;
+using ::aidl::android::hardware::automotive::evs::Stream;
+using ::aidl::android::hardware::automotive::evs::UltrasonicsArrayDesc;
+using ::aidl::android::hardware::graphics::common::BufferUsage;
+using ::aidl::android::hardware::graphics::common::HardwareBufferDescription;
+using ::aidl::android::hardware::graphics::common::PixelFormat;
+using std::chrono_literals::operator""s;
+
+// The main test class for EVS
+class EvsAidlTest : public ::testing::TestWithParam<std::string> {
+  public:
+    virtual void SetUp() override {
+        // Make sure we can connect to the enumerator
+        std::string service_name = GetParam();
+        AIBinder* binder = AServiceManager_waitForService(service_name.data());
+        ASSERT_NE(binder, nullptr);
+        mEnumerator = IEvsEnumerator::fromBinder(::ndk::SpAIBinder(binder));
+        LOG(INFO) << "Test target service: " << service_name;
+
+        ASSERT_TRUE(mEnumerator->isHardware(&mIsHwModule).isOk());
+    }
+
+    virtual void TearDown() override {
+        // Attempt to close any active camera
+        for (auto&& cam : mActiveCameras) {
+            if (cam != nullptr) {
+                mEnumerator->closeCamera(cam);
+            }
+        }
+        mActiveCameras.clear();
+    }
+
+  protected:
+    void loadCameraList() {
+        // SetUp() must run first!
+        ASSERT_NE(mEnumerator, nullptr);
+
+        // Get the camera list
+        ASSERT_TRUE(mEnumerator->getCameraList(&mCameraInfo).isOk())
+                << "Failed to get a list of available cameras";
+        LOG(INFO) << "We have " << mCameraInfo.size() << " cameras.";
+    }
+
+    void loadUltrasonicsArrayList() {
+        // SetUp() must run first!
+        ASSERT_NE(mEnumerator, nullptr);
+
+        // Get the ultrasonics array list
+        ASSERT_TRUE(mEnumerator->getUltrasonicsArrayList(&mUltrasonicsArraysInfo).isOk())
+                << "Failed to get a list of available ultrasonics arrays";
+        LOG(INFO) << "We have " << mCameraInfo.size() << " ultrasonics arrays.";
+    }
+
+    bool isLogicalCamera(const camera_metadata_t* metadata) {
+        if (metadata == nullptr) {
+            // A logical camera device must have a valid camera metadata.
+            return false;
+        }
+
+        // Looking for LOGICAL_MULTI_CAMERA capability from metadata.
+        camera_metadata_ro_entry_t entry;
+        int rc = find_camera_metadata_ro_entry(metadata, ANDROID_REQUEST_AVAILABLE_CAPABILITIES,
+                                               &entry);
+        if (rc != 0) {
+            // No capabilities are found.
+            return false;
+        }
+
+        for (size_t i = 0; i < entry.count; ++i) {
+            uint8_t cap = entry.data.u8[i];
+            if (cap == ANDROID_REQUEST_AVAILABLE_CAPABILITIES_LOGICAL_MULTI_CAMERA) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    std::unordered_set<std::string> getPhysicalCameraIds(const std::string& id, bool& flag) {
+        std::unordered_set<std::string> physicalCameras;
+        const auto it = std::find_if(mCameraInfo.begin(), mCameraInfo.end(),
+                                     [&id](const CameraDesc& desc) { return id == desc.id; });
+        if (it == mCameraInfo.end()) {
+            // Unknown camera is requested.  Return an empty list.
+            return physicalCameras;
+        }
+
+        const camera_metadata_t* metadata = reinterpret_cast<camera_metadata_t*>(&it->metadata[0]);
+        flag = isLogicalCamera(metadata);
+        if (!flag) {
+            // EVS assumes that the device w/o a valid metadata is a physical
+            // device.
+            LOG(INFO) << id << " is not a logical camera device.";
+            physicalCameras.insert(id);
+            return physicalCameras;
+        }
+
+        // Look for physical camera identifiers
+        camera_metadata_ro_entry entry;
+        int rc = find_camera_metadata_ro_entry(metadata, ANDROID_LOGICAL_MULTI_CAMERA_PHYSICAL_IDS,
+                                               &entry);
+        if (rc != 0) {
+            LOG(ERROR) << "No physical camera ID is found for a logical camera device";
+        }
+
+        const uint8_t* ids = entry.data.u8;
+        size_t start = 0;
+        for (size_t i = 0; i < entry.count; ++i) {
+            if (ids[i] == '\0') {
+                if (start != i) {
+                    std::string id(reinterpret_cast<const char*>(ids + start));
+                    physicalCameras.insert(id);
+                }
+                start = i + 1;
+            }
+        }
+
+        LOG(INFO) << id << " consists of " << physicalCameras.size() << " physical camera devices";
+        return physicalCameras;
+    }
+
+    Stream getFirstStreamConfiguration(camera_metadata_t* metadata) {
+        Stream targetCfg = {};
+        camera_metadata_entry_t streamCfgs;
+        if (!find_camera_metadata_entry(metadata, ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS,
+                                        &streamCfgs)) {
+            // Stream configurations are found in metadata
+            RawStreamConfig* ptr = reinterpret_cast<RawStreamConfig*>(streamCfgs.data.i32);
+            for (unsigned offset = 0; offset < streamCfgs.count; offset += kStreamCfgSz) {
+                if (ptr->direction == ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT &&
+                    ptr->format == HAL_PIXEL_FORMAT_RGBA_8888) {
+                    targetCfg.width = ptr->width;
+                    targetCfg.height = ptr->height;
+                    targetCfg.format = static_cast<PixelFormat>(ptr->format);
+                    break;
+                }
+                ++ptr;
+            }
+        }
+
+        return targetCfg;
+    }
+
+    // Every test needs access to the service
+    std::shared_ptr<IEvsEnumerator> mEnumerator;
+    // Empty unless/util loadCameraList() is called
+    std::vector<CameraDesc> mCameraInfo;
+    // boolean to tell current module under testing is HW module implementation
+    // or not
+    bool mIsHwModule;
+    // A list of active camera handles that are need to be cleaned up
+    std::deque<std::shared_ptr<IEvsCamera>> mActiveCameras;
+    // Empty unless/util loadUltrasonicsArrayList() is called
+    std::vector<UltrasonicsArrayDesc> mUltrasonicsArraysInfo;
+    // A list of active ultrasonics array handles that are to be cleaned up
+    std::deque<std::weak_ptr<IEvsUltrasonicsArray>> mActiveUltrasonicsArrays;
+};
+
+// Test cases, their implementations, and corresponding requirements are
+// documented at go/aae-evs-public-api-test.
+
+/*
+ * CameraOpenClean:
+ * Opens each camera reported by the enumerator and then explicitly closes it via a
+ * call to closeCamera.  Then repeats the test to ensure all cameras can be reopened.
+ */
+TEST_P(EvsAidlTest, CameraOpenClean) {
+    LOG(INFO) << "Starting CameraOpenClean test";
+
+    // Get the camera list
+    loadCameraList();
+
+    // Open and close each camera twice
+    for (auto&& cam : mCameraInfo) {
+        bool isLogicalCam = false;
+        auto devices = getPhysicalCameraIds(cam.id, isLogicalCam);
+        if (mIsHwModule && isLogicalCam) {
+            LOG(INFO) << "Skip a logical device, " << cam.id << " for HW target.";
+            continue;
+        }
+
+        // Read a target resolution from the metadata
+        Stream targetCfg = getFirstStreamConfiguration(
+                reinterpret_cast<camera_metadata_t*>(cam.metadata.data()));
+        ASSERT_GT(targetCfg.width, 0);
+        ASSERT_GT(targetCfg.height, 0);
+
+        for (int pass = 0; pass < 2; pass++) {
+            std::shared_ptr<IEvsCamera> pCam;
+            ASSERT_TRUE(mEnumerator->openCamera(cam.id, targetCfg, &pCam).isOk());
+            ASSERT_NE(pCam, nullptr);
+
+            CameraDesc cameraInfo;
+            for (auto&& devName : devices) {
+                ASSERT_TRUE(pCam->getPhysicalCameraInfo(devName, &cameraInfo).isOk());
+                EXPECT_EQ(devName, cameraInfo.id);
+            }
+
+            // Store a camera handle for a clean-up
+            mActiveCameras.push_back(pCam);
+
+            // Verify that this camera self-identifies correctly
+            ASSERT_TRUE(pCam->getCameraInfo(&cameraInfo).isOk());
+            EXPECT_EQ(cam.id, cameraInfo.id);
+
+            // Verify methods for extended info
+            const auto id = 0xFFFFFFFF;  // meaningless id
+            std::vector<uint8_t> values;
+            auto status = pCam->setExtendedInfo(id, values);
+            if (isLogicalCam) {
+                EXPECT_TRUE(!status.isOk() && status.getServiceSpecificError() ==
+                                                      static_cast<int>(EvsResult::NOT_SUPPORTED));
+            } else {
+                EXPECT_TRUE(status.isOk());
+            }
+
+            status = pCam->getExtendedInfo(id, &values);
+            if (isLogicalCam) {
+                EXPECT_TRUE(!status.isOk() && status.getServiceSpecificError() ==
+                                                      static_cast<int>(EvsResult::NOT_SUPPORTED));
+            } else {
+                EXPECT_TRUE(status.isOk());
+            }
+
+            // Explicitly close the camera so resources are released right away
+            ASSERT_TRUE(mEnumerator->closeCamera(pCam).isOk());
+            mActiveCameras.clear();
+        }
+    }
+}
+
+/*
+ * CameraOpenAggressive:
+ * Opens each camera reported by the enumerator twice in a row without an intervening closeCamera
+ * call.  This ensures that the intended "aggressive open" behavior works.  This is necessary for
+ * the system to be tolerant of shutdown/restart race conditions.
+ */
+TEST_P(EvsAidlTest, CameraOpenAggressive) {
+    LOG(INFO) << "Starting CameraOpenAggressive test";
+
+    // Get the camera list
+    loadCameraList();
+
+    // Open and close each camera twice
+    for (auto&& cam : mCameraInfo) {
+        bool isLogicalCam = false;
+        getPhysicalCameraIds(cam.id, isLogicalCam);
+        if (mIsHwModule && isLogicalCam) {
+            LOG(INFO) << "Skip a logical device, " << cam.id << " for HW target.";
+            continue;
+        }
+
+        // Read a target resolution from the metadata
+        Stream targetCfg = getFirstStreamConfiguration(
+                reinterpret_cast<camera_metadata_t*>(cam.metadata.data()));
+        ASSERT_GT(targetCfg.width, 0);
+        ASSERT_GT(targetCfg.height, 0);
+
+        mActiveCameras.clear();
+        std::shared_ptr<IEvsCamera> pCam;
+        ASSERT_TRUE(mEnumerator->openCamera(cam.id, targetCfg, &pCam).isOk());
+        EXPECT_NE(pCam, nullptr);
+
+        // Store a camera handle for a clean-up
+        mActiveCameras.push_back(pCam);
+
+        // Verify that this camera self-identifies correctly
+        CameraDesc cameraInfo;
+        ASSERT_TRUE(pCam->getCameraInfo(&cameraInfo).isOk());
+        EXPECT_EQ(cam.id, cameraInfo.id);
+
+        std::shared_ptr<IEvsCamera> pCam2;
+        ASSERT_TRUE(mEnumerator->openCamera(cam.id, targetCfg, &pCam2).isOk());
+        EXPECT_NE(pCam2, nullptr);
+        EXPECT_NE(pCam, pCam2);
+
+        // Store a camera handle for a clean-up
+        mActiveCameras.push_back(pCam2);
+
+        auto status = pCam->setMaxFramesInFlight(2);
+        if (mIsHwModule) {
+            // Verify that the old camera rejects calls via HW module.
+            EXPECT_TRUE(!status.isOk() && status.getServiceSpecificError() ==
+                                                  static_cast<int>(EvsResult::OWNERSHIP_LOST));
+        } else {
+            // default implementation supports multiple clients.
+            EXPECT_TRUE(status.isOk());
+        }
+
+        // Close the superseded camera
+        ASSERT_TRUE(mEnumerator->closeCamera(pCam).isOk());
+        mActiveCameras.pop_front();
+
+        // Verify that the second camera instance self-identifies correctly
+        ASSERT_TRUE(pCam2->getCameraInfo(&cameraInfo).isOk());
+        EXPECT_EQ(cam.id, cameraInfo.id);
+
+        // Close the second camera instance
+        ASSERT_TRUE(mEnumerator->closeCamera(pCam2).isOk());
+        mActiveCameras.pop_front();
+    }
+
+    // Sleep here to ensure the destructor cleanup has time to run so we don't break follow on tests
+    sleep(1);  // I hate that this is an arbitrary time to wait.  :(  b/36122635
+}
+
+/*
+ * CameraStreamPerformance:
+ * Measure and qualify the stream start up time and streaming frame rate of each reported camera
+ */
+TEST_P(EvsAidlTest, CameraStreamPerformance) {
+    LOG(INFO) << "Starting CameraStreamPerformance test";
+
+    // Get the camera list
+    loadCameraList();
+
+    // Test each reported camera
+    for (auto&& cam : mCameraInfo) {
+        bool isLogicalCam = false;
+        auto devices = getPhysicalCameraIds(cam.id, isLogicalCam);
+        if (mIsHwModule && isLogicalCam) {
+            LOG(INFO) << "Skip a logical device " << cam.id;
+            continue;
+        }
+
+        // Read a target resolution from the metadata
+        Stream targetCfg = getFirstStreamConfiguration(
+                reinterpret_cast<camera_metadata_t*>(cam.metadata.data()));
+        ASSERT_GT(targetCfg.width, 0);
+        ASSERT_GT(targetCfg.height, 0);
+
+        std::shared_ptr<IEvsCamera> pCam;
+        ASSERT_TRUE(mEnumerator->openCamera(cam.id, targetCfg, &pCam).isOk());
+        EXPECT_NE(pCam, nullptr);
+
+        // Store a camera handle for a clean-up
+        mActiveCameras.push_back(pCam);
+
+        // Set up a frame receiver object which will fire up its own thread
+        std::shared_ptr<FrameHandler> frameHandler =
+                std::make_shared<FrameHandler>(pCam, cam, nullptr, FrameHandler::eAutoReturn);
+        EXPECT_NE(frameHandler, nullptr);
+
+        // Start the camera's video stream
+        nsecs_t start = systemTime(SYSTEM_TIME_MONOTONIC);
+        ASSERT_TRUE(frameHandler->startStream());
+
+        // Ensure the first frame arrived within the expected time
+        frameHandler->waitForFrameCount(1);
+        nsecs_t firstFrame = systemTime(SYSTEM_TIME_MONOTONIC);
+        nsecs_t timeToFirstFrame = systemTime(SYSTEM_TIME_MONOTONIC) - start;
+
+        // Extra delays are expected when we attempt to start a video stream on
+        // the logical camera device.  The amount of delay is expected the
+        // number of physical camera devices multiplied by
+        // kMaxStreamStartMilliseconds at most.
+        EXPECT_LE(nanoseconds_to_milliseconds(timeToFirstFrame),
+                  kMaxStreamStartMilliseconds * devices.size());
+        printf("%s: Measured time to first frame %0.2f ms\n", cam.id.data(),
+               timeToFirstFrame * kNanoToMilliseconds);
+        LOG(INFO) << cam.id << ": Measured time to first frame " << std::scientific
+                  << timeToFirstFrame * kNanoToMilliseconds << " ms.";
+
+        // Check aspect ratio
+        unsigned width = 0, height = 0;
+        frameHandler->getFrameDimension(&width, &height);
+        EXPECT_GE(width, height);
+
+        // Wait a bit, then ensure we get at least the required minimum number of frames
+        sleep(5);
+        nsecs_t end = systemTime(SYSTEM_TIME_MONOTONIC);
+
+        // Even when the camera pointer goes out of scope, the FrameHandler object will
+        // keep the stream alive unless we tell it to shutdown.
+        // Also note that the FrameHandle and the Camera have a mutual circular reference, so
+        // we have to break that cycle in order for either of them to get cleaned up.
+        frameHandler->shutdown();
+
+        unsigned framesReceived = 0;
+        frameHandler->getFramesCounters(&framesReceived, nullptr);
+        framesReceived = framesReceived - 1;  // Back out the first frame we already waited for
+        nsecs_t runTime = end - firstFrame;
+        float framesPerSecond = framesReceived / (runTime * kNanoToSeconds);
+        printf("Measured camera rate %3.2f fps\n", framesPerSecond);
+        LOG(INFO) << "Measured camera rate " << std::scientific << framesPerSecond << " fps.";
+        EXPECT_GE(framesPerSecond, kMinimumFramesPerSecond);
+
+        // Explicitly release the camera
+        ASSERT_TRUE(mEnumerator->closeCamera(pCam).isOk());
+        mActiveCameras.clear();
+    }
+}
+
+/*
+ * CameraStreamBuffering:
+ * Ensure the camera implementation behaves properly when the client holds onto buffers for more
+ * than one frame time.  The camera must cleanly skip frames until the client is ready again.
+ */
+TEST_P(EvsAidlTest, CameraStreamBuffering) {
+    LOG(INFO) << "Starting CameraStreamBuffering test";
+
+    // Arbitrary constant (should be > 1 and not too big)
+    static const unsigned int kBuffersToHold = 6;
+
+    // Get the camera list
+    loadCameraList();
+
+    // Test each reported camera
+    for (auto&& cam : mCameraInfo) {
+        bool isLogicalCam = false;
+        getPhysicalCameraIds(cam.id, isLogicalCam);
+        if (mIsHwModule && isLogicalCam) {
+            LOG(INFO) << "Skip a logical device " << cam.id << " for HW target.";
+            continue;
+        }
+
+        // Read a target resolution from the metadata
+        Stream targetCfg = getFirstStreamConfiguration(
+                reinterpret_cast<camera_metadata_t*>(cam.metadata.data()));
+        ASSERT_GT(targetCfg.width, 0);
+        ASSERT_GT(targetCfg.height, 0);
+
+        std::shared_ptr<IEvsCamera> pCam;
+        ASSERT_TRUE(mEnumerator->openCamera(cam.id, targetCfg, &pCam).isOk());
+        EXPECT_NE(pCam, nullptr);
+
+        // Store a camera handle for a clean-up
+        mActiveCameras.push_back(pCam);
+
+        // Ask for a very large number of buffers in flight to ensure it errors correctly
+        auto badResult = pCam->setMaxFramesInFlight(0xFFFFFFFF);
+        EXPECT_TRUE(!badResult.isOk() && badResult.getServiceSpecificError() ==
+                                                 static_cast<int>(EvsResult::BUFFER_NOT_AVAILABLE));
+
+        // Now ask for exactly two buffers in flight as we'll test behavior in that case
+        ASSERT_TRUE(pCam->setMaxFramesInFlight(kBuffersToHold).isOk());
+
+        // Set up a frame receiver object which will fire up its own thread.
+        std::shared_ptr<FrameHandler> frameHandler =
+                std::make_shared<FrameHandler>(pCam, cam, nullptr, FrameHandler::eNoAutoReturn);
+        EXPECT_NE(frameHandler, nullptr);
+
+        // Start the camera's video stream
+        ASSERT_TRUE(frameHandler->startStream());
+
+        // Check that the video stream stalls once we've gotten exactly the number of buffers
+        // we requested since we told the frameHandler not to return them.
+        sleep(1);  // 1 second should be enough for at least 5 frames to be delivered worst case
+        unsigned framesReceived = 0;
+        frameHandler->getFramesCounters(&framesReceived, nullptr);
+        ASSERT_EQ(kBuffersToHold, framesReceived) << "Stream didn't stall at expected buffer limit";
+
+        // Give back one buffer
+        ASSERT_TRUE(frameHandler->returnHeldBuffer());
+
+        // Once we return a buffer, it shouldn't take more than 1/10 second to get a new one
+        // filled since we require 10fps minimum -- but give a 10% allowance just in case.
+        usleep(110 * kMillisecondsToMicroseconds);
+        frameHandler->getFramesCounters(&framesReceived, nullptr);
+        EXPECT_EQ(kBuffersToHold + 1, framesReceived) << "Stream should've resumed";
+
+        // Even when the camera pointer goes out of scope, the FrameHandler object will
+        // keep the stream alive unless we tell it to shutdown.
+        // Also note that the FrameHandle and the Camera have a mutual circular reference, so
+        // we have to break that cycle in order for either of them to get cleaned up.
+        frameHandler->shutdown();
+
+        // Explicitly release the camera
+        ASSERT_TRUE(mEnumerator->closeCamera(pCam).isOk());
+        mActiveCameras.clear();
+    }
+}
+
+/*
+ * CameraToDisplayRoundTrip:
+ * End to end test of data flowing from the camera to the display.  Each delivered frame of camera
+ * imagery is simply copied to the display buffer and presented on screen.  This is the one test
+ * which a human could observe to see the operation of the system on the physical display.
+ */
+TEST_P(EvsAidlTest, CameraToDisplayRoundTrip) {
+    LOG(INFO) << "Starting CameraToDisplayRoundTrip test";
+
+    // Get the camera list
+    loadCameraList();
+
+    // Request available display IDs
+    uint8_t targetDisplayId = 0;
+    std::vector<uint8_t> displayIds;
+    ASSERT_TRUE(mEnumerator->getDisplayIdList(&displayIds).isOk());
+    EXPECT_GT(displayIds.size(), 0);
+    targetDisplayId = displayIds[0];
+
+    // Request exclusive access to the first EVS display
+    std::shared_ptr<IEvsDisplay> pDisplay;
+    ASSERT_TRUE(mEnumerator->openDisplay(targetDisplayId, &pDisplay).isOk());
+    EXPECT_NE(pDisplay, nullptr);
+    LOG(INFO) << "Display " << targetDisplayId << " is in use.";
+
+    // Get the display descriptor
+    DisplayDesc displayDesc;
+    ASSERT_TRUE(pDisplay->getDisplayInfo(&displayDesc).isOk());
+    LOG(INFO) << "    Resolution: " << displayDesc.width << "x" << displayDesc.height;
+    ASSERT_GT(displayDesc.width, 0);
+    ASSERT_GT(displayDesc.height, 0);
+
+    // Test each reported camera
+    for (auto&& cam : mCameraInfo) {
+        bool isLogicalCam = false;
+        getPhysicalCameraIds(cam.id, isLogicalCam);
+        if (mIsHwModule && isLogicalCam) {
+            LOG(INFO) << "Skip a logical device " << cam.id << " for HW target.";
+            continue;
+        }
+
+        // Read a target resolution from the metadata
+        Stream targetCfg = getFirstStreamConfiguration(
+                reinterpret_cast<camera_metadata_t*>(cam.metadata.data()));
+        ASSERT_GT(targetCfg.width, 0);
+        ASSERT_GT(targetCfg.height, 0);
+
+        std::shared_ptr<IEvsCamera> pCam;
+        ASSERT_TRUE(mEnumerator->openCamera(cam.id, targetCfg, &pCam).isOk());
+        EXPECT_NE(pCam, nullptr);
+
+        // Store a camera handle for a clean-up
+        mActiveCameras.push_back(pCam);
+
+        // Set up a frame receiver object which will fire up its own thread.
+        std::shared_ptr<FrameHandler> frameHandler =
+                std::make_shared<FrameHandler>(pCam, cam, pDisplay, FrameHandler::eAutoReturn);
+        EXPECT_NE(frameHandler, nullptr);
+
+        // Activate the display
+        ASSERT_TRUE(pDisplay->setDisplayState(DisplayState::VISIBLE_ON_NEXT_FRAME).isOk());
+
+        // Start the camera's video stream
+        ASSERT_TRUE(frameHandler->startStream());
+
+        // Wait a while to let the data flow
+        static const int kSecondsToWait = 5;
+        const int streamTimeMs =
+                kSecondsToWait * kSecondsToMilliseconds - kMaxStreamStartMilliseconds;
+        const unsigned minimumFramesExpected =
+                streamTimeMs * kMinimumFramesPerSecond / kSecondsToMilliseconds;
+        sleep(kSecondsToWait);
+        unsigned framesReceived = 0;
+        unsigned framesDisplayed = 0;
+        frameHandler->getFramesCounters(&framesReceived, &framesDisplayed);
+        EXPECT_EQ(framesReceived, framesDisplayed);
+        EXPECT_GE(framesDisplayed, minimumFramesExpected);
+
+        // Turn off the display (yes, before the stream stops -- it should be handled)
+        ASSERT_TRUE(pDisplay->setDisplayState(DisplayState::NOT_VISIBLE).isOk());
+
+        // Shut down the streamer
+        frameHandler->shutdown();
+
+        // Explicitly release the camera
+        ASSERT_TRUE(mEnumerator->closeCamera(pCam).isOk());
+        mActiveCameras.clear();
+    }
+
+    // Explicitly release the display
+    ASSERT_TRUE(mEnumerator->closeDisplay(pDisplay).isOk());
+}
+
+/*
+ * MultiCameraStream:
+ * Verify that each client can start and stop video streams on the same
+ * underlying camera.
+ */
+TEST_P(EvsAidlTest, MultiCameraStream) {
+    LOG(INFO) << "Starting MultiCameraStream test";
+
+    if (mIsHwModule) {
+        // This test is not for HW module implementation.
+        return;
+    }
+
+    // Get the camera list
+    loadCameraList();
+
+    // Test each reported camera
+    for (auto&& cam : mCameraInfo) {
+        // Read a target resolution from the metadata
+        Stream targetCfg = getFirstStreamConfiguration(
+                reinterpret_cast<camera_metadata_t*>(cam.metadata.data()));
+        ASSERT_GT(targetCfg.width, 0);
+        ASSERT_GT(targetCfg.height, 0);
+
+        // Create two camera clients.
+        std::shared_ptr<IEvsCamera> pCam0;
+        ASSERT_TRUE(mEnumerator->openCamera(cam.id, targetCfg, &pCam0).isOk());
+        EXPECT_NE(pCam0, nullptr);
+
+        // Store a camera handle for a clean-up
+        mActiveCameras.push_back(pCam0);
+
+        std::shared_ptr<IEvsCamera> pCam1;
+        ASSERT_TRUE(mEnumerator->openCamera(cam.id, targetCfg, &pCam1).isOk());
+        EXPECT_NE(pCam1, nullptr);
+
+        // Store a camera handle for a clean-up
+        mActiveCameras.push_back(pCam1);
+
+        // Set up per-client frame receiver objects which will fire up its own thread
+        std::shared_ptr<FrameHandler> frameHandler0 =
+                std::make_shared<FrameHandler>(pCam0, cam, nullptr, FrameHandler::eAutoReturn);
+        std::shared_ptr<FrameHandler> frameHandler1 =
+                std::make_shared<FrameHandler>(pCam1, cam, nullptr, FrameHandler::eAutoReturn);
+        EXPECT_NE(frameHandler0, nullptr);
+        EXPECT_NE(frameHandler1, nullptr);
+
+        // Start the camera's video stream via client 0
+        ASSERT_TRUE(frameHandler0->startStream());
+        ASSERT_TRUE(frameHandler1->startStream());
+
+        // Ensure the stream starts
+        frameHandler0->waitForFrameCount(1);
+        frameHandler1->waitForFrameCount(1);
+
+        nsecs_t firstFrame = systemTime(SYSTEM_TIME_MONOTONIC);
+
+        // Wait a bit, then ensure both clients get at least the required minimum number of frames
+        sleep(5);
+        nsecs_t end = systemTime(SYSTEM_TIME_MONOTONIC);
+        unsigned framesReceived0 = 0, framesReceived1 = 0;
+        frameHandler0->getFramesCounters(&framesReceived0, nullptr);
+        frameHandler1->getFramesCounters(&framesReceived1, nullptr);
+        framesReceived0 = framesReceived0 - 1;  // Back out the first frame we already waited for
+        framesReceived1 = framesReceived1 - 1;  // Back out the first frame we already waited for
+        nsecs_t runTime = end - firstFrame;
+        float framesPerSecond0 = framesReceived0 / (runTime * kNanoToSeconds);
+        float framesPerSecond1 = framesReceived1 / (runTime * kNanoToSeconds);
+        LOG(INFO) << "Measured camera rate " << std::scientific << framesPerSecond0 << " fps and "
+                  << framesPerSecond1 << " fps";
+        EXPECT_GE(framesPerSecond0, kMinimumFramesPerSecond);
+        EXPECT_GE(framesPerSecond1, kMinimumFramesPerSecond);
+
+        // Shutdown one client
+        frameHandler0->shutdown();
+
+        // Read frame counters again
+        frameHandler0->getFramesCounters(&framesReceived0, nullptr);
+        frameHandler1->getFramesCounters(&framesReceived1, nullptr);
+
+        // Wait a bit again
+        sleep(5);
+        unsigned framesReceivedAfterStop0 = 0, framesReceivedAfterStop1 = 0;
+        frameHandler0->getFramesCounters(&framesReceivedAfterStop0, nullptr);
+        frameHandler1->getFramesCounters(&framesReceivedAfterStop1, nullptr);
+        EXPECT_EQ(framesReceived0, framesReceivedAfterStop0);
+        EXPECT_LT(framesReceived1, framesReceivedAfterStop1);
+
+        // Shutdown another
+        frameHandler1->shutdown();
+
+        // Explicitly release the camera
+        ASSERT_TRUE(mEnumerator->closeCamera(pCam0).isOk());
+        ASSERT_TRUE(mEnumerator->closeCamera(pCam1).isOk());
+        mActiveCameras.clear();
+
+        // TODO(b/145459970, b/145457727): below sleep() is added to ensure the
+        // destruction of active camera objects; this may be related with two
+        // issues.
+        sleep(1);
+    }
+}
+
+/*
+ * CameraParameter:
+ * Verify that a client can adjust a camera parameter.
+ */
+TEST_P(EvsAidlTest, CameraParameter) {
+    LOG(INFO) << "Starting CameraParameter test";
+
+    // Get the camera list
+    loadCameraList();
+
+    // Test each reported camera
+    for (auto&& cam : mCameraInfo) {
+        bool isLogicalCam = false;
+        getPhysicalCameraIds(cam.id, isLogicalCam);
+        if (isLogicalCam) {
+            // TODO(b/145465724): Support camera parameter programming on
+            // logical devices.
+            LOG(INFO) << "Skip a logical device " << cam.id;
+            continue;
+        }
+
+        // Read a target resolution from the metadata
+        Stream targetCfg = getFirstStreamConfiguration(
+                reinterpret_cast<camera_metadata_t*>(cam.metadata.data()));
+        ASSERT_GT(targetCfg.width, 0);
+        ASSERT_GT(targetCfg.height, 0);
+
+        // Create a camera client
+        std::shared_ptr<IEvsCamera> pCam;
+        ASSERT_TRUE(mEnumerator->openCamera(cam.id, targetCfg, &pCam).isOk());
+        EXPECT_NE(pCam, nullptr);
+
+        // Store a camera
+        mActiveCameras.push_back(pCam);
+
+        // Get the parameter list
+        std::vector<CameraParam> cmds;
+        ASSERT_TRUE(pCam->getParameterList(&cmds).isOk());
+        if (cmds.size() < 1) {
+            continue;
+        }
+
+        // Set up per-client frame receiver objects which will fire up its own thread
+        std::shared_ptr<FrameHandler> frameHandler =
+                std::make_shared<FrameHandler>(pCam, cam, nullptr, FrameHandler::eAutoReturn);
+        EXPECT_NE(frameHandler, nullptr);
+
+        // Start the camera's video stream
+        ASSERT_TRUE(frameHandler->startStream());
+
+        // Ensure the stream starts
+        frameHandler->waitForFrameCount(1);
+
+        // Set current client is the primary client
+        ASSERT_TRUE(pCam->setPrimaryClient().isOk());
+        for (auto& cmd : cmds) {
+            // Get a valid parameter value range
+            ParameterRange range;
+            ASSERT_TRUE(pCam->getIntParameterRange(cmd, &range).isOk());
+
+            std::vector<int32_t> values;
+            if (cmd == CameraParam::ABSOLUTE_FOCUS) {
+                // Try to turn off auto-focus
+                ASSERT_TRUE(pCam->setIntParameter(CameraParam::AUTO_FOCUS, 0, &values).isOk());
+                for (auto&& v : values) {
+                    EXPECT_EQ(v, 0);
+                }
+            }
+
+            // Try to program a parameter with a random value [minVal, maxVal]
+            int32_t val0 = range.min + (std::rand() % (range.max - range.min));
+
+            // Rounding down
+            val0 = val0 - (val0 % range.step);
+            values.clear();
+            ASSERT_TRUE(pCam->setIntParameter(cmd, val0, &values).isOk());
+
+            values.clear();
+            ASSERT_TRUE(pCam->getIntParameter(cmd, &values).isOk());
+            for (auto&& v : values) {
+                EXPECT_EQ(val0, v) << "Values are not matched.";
+            }
+        }
+        ASSERT_TRUE(pCam->unsetPrimaryClient().isOk());
+
+        // Shutdown
+        frameHandler->shutdown();
+
+        // Explicitly release the camera
+        ASSERT_TRUE(mEnumerator->closeCamera(pCam).isOk());
+        mActiveCameras.clear();
+    }
+}
+
+/*
+ * CameraPrimaryClientRelease
+ * Verify that non-primary client gets notified when the primary client either
+ * terminates or releases a role.
+ */
+TEST_P(EvsAidlTest, CameraPrimaryClientRelease) {
+    LOG(INFO) << "Starting CameraPrimaryClientRelease test";
+
+    if (mIsHwModule) {
+        // This test is not for HW module implementation.
+        return;
+    }
+
+    // Get the camera list
+    loadCameraList();
+
+    // Test each reported camera
+    for (auto&& cam : mCameraInfo) {
+        bool isLogicalCam = false;
+        getPhysicalCameraIds(cam.id, isLogicalCam);
+        if (isLogicalCam) {
+            // TODO(b/145465724): Support camera parameter programming on
+            // logical devices.
+            LOG(INFO) << "Skip a logical device " << cam.id;
+            continue;
+        }
+
+        // Read a target resolution from the metadata
+        Stream targetCfg = getFirstStreamConfiguration(
+                reinterpret_cast<camera_metadata_t*>(cam.metadata.data()));
+        ASSERT_GT(targetCfg.width, 0);
+        ASSERT_GT(targetCfg.height, 0);
+
+        // Create two camera clients.
+        std::shared_ptr<IEvsCamera> pPrimaryCam;
+        ASSERT_TRUE(mEnumerator->openCamera(cam.id, targetCfg, &pPrimaryCam).isOk());
+        EXPECT_NE(pPrimaryCam, nullptr);
+
+        // Store a camera handle for a clean-up
+        mActiveCameras.push_back(pPrimaryCam);
+
+        std::shared_ptr<IEvsCamera> pSecondaryCam;
+        ASSERT_TRUE(mEnumerator->openCamera(cam.id, targetCfg, &pSecondaryCam).isOk());
+        EXPECT_NE(pSecondaryCam, nullptr);
+
+        // Store a camera handle for a clean-up
+        mActiveCameras.push_back(pSecondaryCam);
+
+        // Set up per-client frame receiver objects which will fire up its own thread
+        std::shared_ptr<FrameHandler> frameHandlerPrimary = std::make_shared<FrameHandler>(
+                pPrimaryCam, cam, nullptr, FrameHandler::eAutoReturn);
+        std::shared_ptr<FrameHandler> frameHandlerSecondary = std::make_shared<FrameHandler>(
+                pSecondaryCam, cam, nullptr, FrameHandler::eAutoReturn);
+        EXPECT_NE(frameHandlerPrimary, nullptr);
+        EXPECT_NE(frameHandlerSecondary, nullptr);
+
+        // Set one client as the primary client
+        ASSERT_TRUE(pPrimaryCam->setPrimaryClient().isOk());
+
+        // Try to set another client as the primary client.
+        ASSERT_FALSE(pSecondaryCam->setPrimaryClient().isOk());
+
+        // Start the camera's video stream via a primary client client.
+        ASSERT_TRUE(frameHandlerPrimary->startStream());
+
+        // Ensure the stream starts
+        frameHandlerPrimary->waitForFrameCount(1);
+
+        // Start the camera's video stream via another client
+        ASSERT_TRUE(frameHandlerSecondary->startStream());
+
+        // Ensure the stream starts
+        frameHandlerSecondary->waitForFrameCount(1);
+
+        // Non-primary client expects to receive a primary client role relesed
+        // notification.
+        EvsEventDesc aTargetEvent = {};
+        EvsEventDesc aNotification = {};
+
+        bool listening = false;
+        std::mutex eventLock;
+        std::condition_variable eventCond;
+        std::thread listener =
+                std::thread([&aNotification, &frameHandlerSecondary, &listening, &eventCond]() {
+                    // Notify that a listening thread is running.
+                    listening = true;
+                    eventCond.notify_all();
+
+                    EvsEventDesc aTargetEvent;
+                    aTargetEvent.aType = EvsEventType::MASTER_RELEASED;
+                    if (!frameHandlerSecondary->waitForEvent(aTargetEvent, aNotification, true)) {
+                        LOG(WARNING) << "A timer is expired before a target event is fired.";
+                    }
+                });
+
+        // Wait until a listening thread starts.
+        std::unique_lock<std::mutex> lock(eventLock);
+        auto timer = std::chrono::system_clock::now();
+        while (!listening) {
+            timer += 1s;
+            eventCond.wait_until(lock, timer);
+        }
+        lock.unlock();
+
+        // Release a primary client role.
+        ASSERT_TRUE(pPrimaryCam->unsetPrimaryClient().isOk());
+
+        // Join a listening thread.
+        if (listener.joinable()) {
+            listener.join();
+        }
+
+        // Verify change notifications.
+        ASSERT_EQ(EvsEventType::MASTER_RELEASED, static_cast<EvsEventType>(aNotification.aType));
+
+        // Non-primary becomes a primary client.
+        ASSERT_TRUE(pSecondaryCam->setPrimaryClient().isOk());
+
+        // Previous primary client fails to become a primary client.
+        ASSERT_FALSE(pPrimaryCam->setPrimaryClient().isOk());
+
+        listening = false;
+        listener = std::thread([&aNotification, &frameHandlerPrimary, &listening, &eventCond]() {
+            // Notify that a listening thread is running.
+            listening = true;
+            eventCond.notify_all();
+
+            EvsEventDesc aTargetEvent;
+            aTargetEvent.aType = EvsEventType::MASTER_RELEASED;
+            if (!frameHandlerPrimary->waitForEvent(aTargetEvent, aNotification, true)) {
+                LOG(WARNING) << "A timer is expired before a target event is fired.";
+            }
+        });
+
+        // Wait until a listening thread starts.
+        timer = std::chrono::system_clock::now();
+        lock.lock();
+        while (!listening) {
+            eventCond.wait_until(lock, timer + 1s);
+        }
+        lock.unlock();
+
+        // Closing current primary client.
+        frameHandlerSecondary->shutdown();
+
+        // Join a listening thread.
+        if (listener.joinable()) {
+            listener.join();
+        }
+
+        // Verify change notifications.
+        ASSERT_EQ(EvsEventType::MASTER_RELEASED, static_cast<EvsEventType>(aNotification.aType));
+
+        // Closing streams.
+        frameHandlerPrimary->shutdown();
+
+        // Explicitly release the camera
+        ASSERT_TRUE(mEnumerator->closeCamera(pPrimaryCam).isOk());
+        ASSERT_TRUE(mEnumerator->closeCamera(pSecondaryCam).isOk());
+        mActiveCameras.clear();
+    }
+}
+
+/*
+ * MultiCameraParameter:
+ * Verify that primary and non-primary clients behave as expected when they try to adjust
+ * camera parameters.
+ */
+TEST_P(EvsAidlTest, MultiCameraParameter) {
+    LOG(INFO) << "Starting MultiCameraParameter test";
+
+    if (mIsHwModule) {
+        // This test is not for HW module implementation.
+        return;
+    }
+
+    // Get the camera list
+    loadCameraList();
+
+    // Test each reported camera
+    for (auto&& cam : mCameraInfo) {
+        bool isLogicalCam = false;
+        getPhysicalCameraIds(cam.id, isLogicalCam);
+        if (isLogicalCam) {
+            // TODO(b/145465724): Support camera parameter programming on
+            // logical devices.
+            LOG(INFO) << "Skip a logical device " << cam.id;
+            continue;
+        }
+
+        // Read a target resolution from the metadata
+        Stream targetCfg = getFirstStreamConfiguration(
+                reinterpret_cast<camera_metadata_t*>(cam.metadata.data()));
+        ASSERT_GT(targetCfg.width, 0);
+        ASSERT_GT(targetCfg.height, 0);
+
+        // Create two camera clients.
+        std::shared_ptr<IEvsCamera> pPrimaryCam;
+        ASSERT_TRUE(mEnumerator->openCamera(cam.id, targetCfg, &pPrimaryCam).isOk());
+        EXPECT_NE(pPrimaryCam, nullptr);
+
+        // Store a camera handle for a clean-up
+        mActiveCameras.push_back(pPrimaryCam);
+
+        std::shared_ptr<IEvsCamera> pSecondaryCam;
+        ASSERT_TRUE(mEnumerator->openCamera(cam.id, targetCfg, &pSecondaryCam).isOk());
+        EXPECT_NE(pSecondaryCam, nullptr);
+
+        // Store a camera handle for a clean-up
+        mActiveCameras.push_back(pSecondaryCam);
+
+        // Get the parameter list
+        std::vector<CameraParam> camPrimaryCmds, camSecondaryCmds;
+        ASSERT_TRUE(pPrimaryCam->getParameterList(&camPrimaryCmds).isOk());
+        ASSERT_TRUE(pSecondaryCam->getParameterList(&camSecondaryCmds).isOk());
+        if (camPrimaryCmds.size() < 1 || camSecondaryCmds.size() < 1) {
+            // Skip a camera device if it does not support any parameter.
+            continue;
+        }
+
+        // Set up per-client frame receiver objects which will fire up its own thread
+        std::shared_ptr<FrameHandler> frameHandlerPrimary = std::make_shared<FrameHandler>(
+                pPrimaryCam, cam, nullptr, FrameHandler::eAutoReturn);
+        std::shared_ptr<FrameHandler> frameHandlerSecondary = std::make_shared<FrameHandler>(
+                pSecondaryCam, cam, nullptr, FrameHandler::eAutoReturn);
+        EXPECT_NE(frameHandlerPrimary, nullptr);
+        EXPECT_NE(frameHandlerSecondary, nullptr);
+
+        // Set one client as the primary client.
+        ASSERT_TRUE(pPrimaryCam->setPrimaryClient().isOk());
+
+        // Try to set another client as the primary client.
+        ASSERT_FALSE(pSecondaryCam->setPrimaryClient().isOk());
+
+        // Start the camera's video stream via a primary client client.
+        ASSERT_TRUE(frameHandlerPrimary->startStream());
+
+        // Ensure the stream starts
+        frameHandlerPrimary->waitForFrameCount(1);
+
+        // Start the camera's video stream via another client
+        ASSERT_TRUE(frameHandlerSecondary->startStream());
+
+        // Ensure the stream starts
+        frameHandlerSecondary->waitForFrameCount(1);
+
+        int32_t val0 = 0;
+        std::vector<int32_t> values;
+        EvsEventDesc aNotification0 = {};
+        EvsEventDesc aNotification1 = {};
+        for (auto& cmd : camPrimaryCmds) {
+            // Get a valid parameter value range
+            ParameterRange range;
+            ASSERT_TRUE(pPrimaryCam->getIntParameterRange(cmd, &range).isOk());
+            if (cmd == CameraParam::ABSOLUTE_FOCUS) {
+                // Try to turn off auto-focus
+                values.clear();
+                ASSERT_TRUE(
+                        pPrimaryCam->setIntParameter(CameraParam::AUTO_FOCUS, 0, &values).isOk());
+                for (auto&& v : values) {
+                    EXPECT_EQ(v, 0);
+                }
+            }
+
+            // Calculate a parameter value to program.
+            val0 = range.min + (std::rand() % (range.max - range.min));
+            val0 = val0 - (val0 % range.step);
+
+            // Prepare and start event listeners.
+            bool listening0 = false;
+            bool listening1 = false;
+            std::condition_variable eventCond;
+            std::thread listener0 = std::thread([cmd, val0, &aNotification0, &frameHandlerPrimary,
+                                                 &listening0, &listening1, &eventCond]() {
+                listening0 = true;
+                if (listening1) {
+                    eventCond.notify_all();
+                }
+
+                EvsEventDesc aTargetEvent;
+                aTargetEvent.aType = EvsEventType::PARAMETER_CHANGED;
+                aTargetEvent.payload[0] = static_cast<uint32_t>(cmd);
+                aTargetEvent.payload[1] = val0;
+                if (!frameHandlerPrimary->waitForEvent(aTargetEvent, aNotification0)) {
+                    LOG(WARNING) << "A timer is expired before a target event is fired.";
+                }
+            });
+            std::thread listener1 = std::thread([cmd, val0, &aNotification1, &frameHandlerSecondary,
+                                                 &listening0, &listening1, &eventCond]() {
+                listening1 = true;
+                if (listening0) {
+                    eventCond.notify_all();
+                }
+
+                EvsEventDesc aTargetEvent;
+                aTargetEvent.aType = EvsEventType::PARAMETER_CHANGED;
+                aTargetEvent.payload[0] = static_cast<uint32_t>(cmd);
+                aTargetEvent.payload[1] = val0;
+                if (!frameHandlerSecondary->waitForEvent(aTargetEvent, aNotification1)) {
+                    LOG(WARNING) << "A timer is expired before a target event is fired.";
+                }
+            });
+
+            // Wait until a listening thread starts.
+            std::mutex eventLock;
+            std::unique_lock<std::mutex> lock(eventLock);
+            auto timer = std::chrono::system_clock::now();
+            while (!listening0 || !listening1) {
+                eventCond.wait_until(lock, timer + 1s);
+            }
+            lock.unlock();
+
+            // Try to program a parameter
+            values.clear();
+            ASSERT_TRUE(pPrimaryCam->setIntParameter(cmd, val0, &values).isOk());
+            for (auto&& v : values) {
+                EXPECT_EQ(val0, v) << "Values are not matched.";
+            }
+
+            // Join a listening thread.
+            if (listener0.joinable()) {
+                listener0.join();
+            }
+            if (listener1.joinable()) {
+                listener1.join();
+            }
+
+            // Verify a change notification
+            ASSERT_EQ(EvsEventType::PARAMETER_CHANGED,
+                      static_cast<EvsEventType>(aNotification0.aType));
+            ASSERT_EQ(EvsEventType::PARAMETER_CHANGED,
+                      static_cast<EvsEventType>(aNotification1.aType));
+            ASSERT_EQ(cmd, static_cast<CameraParam>(aNotification0.payload[0]));
+            ASSERT_EQ(cmd, static_cast<CameraParam>(aNotification1.payload[0]));
+            for (auto&& v : values) {
+                ASSERT_EQ(v, static_cast<int32_t>(aNotification0.payload[1]));
+                ASSERT_EQ(v, static_cast<int32_t>(aNotification1.payload[1]));
+            }
+
+            // Clients expects to receive a parameter change notification
+            // whenever a primary client client adjusts it.
+            values.clear();
+            ASSERT_TRUE(pPrimaryCam->getIntParameter(cmd, &values).isOk());
+            for (auto&& v : values) {
+                EXPECT_EQ(val0, v) << "Values are not matched.";
+            }
+        }
+
+        // Try to adjust a parameter via non-primary client
+        values.clear();
+        ASSERT_FALSE(pSecondaryCam->setIntParameter(camSecondaryCmds[0], val0, &values).isOk());
+
+        // Non-primary client attempts to be a primary client
+        ASSERT_FALSE(pSecondaryCam->setPrimaryClient().isOk());
+
+        // Primary client retires from a primary client role
+        bool listening = false;
+        std::condition_variable eventCond;
+        std::thread listener =
+                std::thread([&aNotification0, &frameHandlerSecondary, &listening, &eventCond]() {
+                    listening = true;
+                    eventCond.notify_all();
+
+                    EvsEventDesc aTargetEvent;
+                    aTargetEvent.aType = EvsEventType::MASTER_RELEASED;
+                    if (!frameHandlerSecondary->waitForEvent(aTargetEvent, aNotification0, true)) {
+                        LOG(WARNING) << "A timer is expired before a target event is fired.";
+                    }
+                });
+
+        std::mutex eventLock;
+        auto timer = std::chrono::system_clock::now();
+        std::unique_lock<std::mutex> lock(eventLock);
+        while (!listening) {
+            eventCond.wait_until(lock, timer + 1s);
+        }
+        lock.unlock();
+
+        ASSERT_TRUE(pPrimaryCam->unsetPrimaryClient().isOk());
+
+        if (listener.joinable()) {
+            listener.join();
+        }
+        ASSERT_EQ(EvsEventType::MASTER_RELEASED, static_cast<EvsEventType>(aNotification0.aType));
+
+        // Try to adjust a parameter after being retired
+        values.clear();
+        ASSERT_FALSE(pPrimaryCam->setIntParameter(camPrimaryCmds[0], val0, &values).isOk());
+
+        // Non-primary client becomes a primary client
+        ASSERT_TRUE(pSecondaryCam->setPrimaryClient().isOk());
+
+        // Try to adjust a parameter via new primary client
+        for (auto& cmd : camSecondaryCmds) {
+            // Get a valid parameter value range
+            ParameterRange range;
+            ASSERT_TRUE(pSecondaryCam->getIntParameterRange(cmd, &range).isOk());
+
+            values.clear();
+            if (cmd == CameraParam::ABSOLUTE_FOCUS) {
+                // Try to turn off auto-focus
+                values.clear();
+                ASSERT_TRUE(
+                        pSecondaryCam->setIntParameter(CameraParam::AUTO_FOCUS, 0, &values).isOk());
+                for (auto&& v : values) {
+                    EXPECT_EQ(v, 0);
+                }
+            }
+
+            // Calculate a parameter value to program.  This is being rounding down.
+            val0 = range.min + (std::rand() % (range.max - range.min));
+            val0 = val0 - (val0 % range.step);
+
+            // Prepare and start event listeners.
+            bool listening0 = false;
+            bool listening1 = false;
+            std::condition_variable eventCond;
+            std::thread listener0 = std::thread([&]() {
+                listening0 = true;
+                if (listening1) {
+                    eventCond.notify_all();
+                }
+
+                EvsEventDesc aTargetEvent;
+                aTargetEvent.aType = EvsEventType::PARAMETER_CHANGED;
+                aTargetEvent.payload[0] = static_cast<uint32_t>(cmd);
+                aTargetEvent.payload[1] = val0;
+                if (!frameHandlerPrimary->waitForEvent(aTargetEvent, aNotification0)) {
+                    LOG(WARNING) << "A timer is expired before a target event is fired.";
+                }
+            });
+            std::thread listener1 = std::thread([&]() {
+                listening1 = true;
+                if (listening0) {
+                    eventCond.notify_all();
+                }
+
+                EvsEventDesc aTargetEvent;
+                aTargetEvent.aType = EvsEventType::PARAMETER_CHANGED;
+                aTargetEvent.payload[0] = static_cast<uint32_t>(cmd);
+                aTargetEvent.payload[1] = val0;
+                if (!frameHandlerSecondary->waitForEvent(aTargetEvent, aNotification1)) {
+                    LOG(WARNING) << "A timer is expired before a target event is fired.";
+                }
+            });
+
+            // Wait until a listening thread starts.
+            std::mutex eventLock;
+            std::unique_lock<std::mutex> lock(eventLock);
+            auto timer = std::chrono::system_clock::now();
+            while (!listening0 || !listening1) {
+                eventCond.wait_until(lock, timer + 1s);
+            }
+            lock.unlock();
+
+            // Try to program a parameter
+            values.clear();
+            ASSERT_TRUE(pSecondaryCam->setIntParameter(cmd, val0, &values).isOk());
+
+            // Clients expects to receive a parameter change notification
+            // whenever a primary client client adjusts it.
+            values.clear();
+            ASSERT_TRUE(pSecondaryCam->getIntParameter(cmd, &values).isOk());
+            for (auto&& v : values) {
+                EXPECT_EQ(val0, v) << "Values are not matched.";
+            }
+
+            // Join a listening thread.
+            if (listener0.joinable()) {
+                listener0.join();
+            }
+            if (listener1.joinable()) {
+                listener1.join();
+            }
+
+            // Verify a change notification
+            ASSERT_EQ(EvsEventType::PARAMETER_CHANGED,
+                      static_cast<EvsEventType>(aNotification0.aType));
+            ASSERT_EQ(EvsEventType::PARAMETER_CHANGED,
+                      static_cast<EvsEventType>(aNotification1.aType));
+            ASSERT_EQ(cmd, static_cast<CameraParam>(aNotification0.payload[0]));
+            ASSERT_EQ(cmd, static_cast<CameraParam>(aNotification1.payload[0]));
+            for (auto&& v : values) {
+                ASSERT_EQ(v, static_cast<int32_t>(aNotification0.payload[1]));
+                ASSERT_EQ(v, static_cast<int32_t>(aNotification1.payload[1]));
+            }
+        }
+
+        // New primary client retires from the role
+        ASSERT_TRUE(pSecondaryCam->unsetPrimaryClient().isOk());
+
+        // Shutdown
+        frameHandlerPrimary->shutdown();
+        frameHandlerSecondary->shutdown();
+
+        // Explicitly release the camera
+        ASSERT_TRUE(mEnumerator->closeCamera(pPrimaryCam).isOk());
+        ASSERT_TRUE(mEnumerator->closeCamera(pSecondaryCam).isOk());
+        mActiveCameras.clear();
+    }
+}
+
+/*
+ * HighPriorityCameraClient:
+ * EVS client, which owns the display, is priortized and therefore can take over
+ * a primary client role from other EVS clients without the display.
+ */
+TEST_P(EvsAidlTest, HighPriorityCameraClient) {
+    LOG(INFO) << "Starting HighPriorityCameraClient test";
+
+    if (mIsHwModule) {
+        // This test is not for HW module implementation.
+        return;
+    }
+
+    // Get the camera list
+    loadCameraList();
+
+    // Request available display IDs
+    uint8_t targetDisplayId = 0;
+    std::vector<uint8_t> displayIds;
+    ASSERT_TRUE(mEnumerator->getDisplayIdList(&displayIds).isOk());
+    EXPECT_GT(displayIds.size(), 0);
+    targetDisplayId = displayIds[0];
+
+    // Request exclusive access to the EVS display
+    std::shared_ptr<IEvsDisplay> pDisplay;
+    ASSERT_TRUE(mEnumerator->openDisplay(targetDisplayId, &pDisplay).isOk());
+    EXPECT_NE(pDisplay, nullptr);
+
+    // Test each reported camera
+    for (auto&& cam : mCameraInfo) {
+        // Read a target resolution from the metadata
+        Stream targetCfg = getFirstStreamConfiguration(
+                reinterpret_cast<camera_metadata_t*>(cam.metadata.data()));
+        ASSERT_GT(targetCfg.width, 0);
+        ASSERT_GT(targetCfg.height, 0);
+
+        // Create two clients
+        std::shared_ptr<IEvsCamera> pCam0;
+        ASSERT_TRUE(mEnumerator->openCamera(cam.id, targetCfg, &pCam0).isOk());
+        EXPECT_NE(pCam0, nullptr);
+
+        // Store a camera handle for a clean-up
+        mActiveCameras.push_back(pCam0);
+
+        std::shared_ptr<IEvsCamera> pCam1;
+        ASSERT_TRUE(mEnumerator->openCamera(cam.id, targetCfg, &pCam1).isOk());
+        EXPECT_NE(pCam1, nullptr);
+
+        // Store a camera handle for a clean-up
+        mActiveCameras.push_back(pCam1);
+
+        // Get the parameter list; this test will use the first command in both
+        // lists.
+        std::vector<CameraParam> cam0Cmds, cam1Cmds;
+        ASSERT_TRUE(pCam0->getParameterList(&cam0Cmds).isOk());
+        ASSERT_TRUE(pCam1->getParameterList(&cam1Cmds).isOk());
+        if (cam0Cmds.size() < 1 || cam1Cmds.size() < 1) {
+            // Cannot execute this test.
+            return;
+        }
+
+        // Set up a frame receiver object which will fire up its own thread.
+        std::shared_ptr<FrameHandler> frameHandler0 =
+                std::make_shared<FrameHandler>(pCam0, cam, nullptr, FrameHandler::eAutoReturn);
+        std::shared_ptr<FrameHandler> frameHandler1 =
+                std::make_shared<FrameHandler>(pCam1, cam, nullptr, FrameHandler::eAutoReturn);
+        EXPECT_NE(frameHandler0, nullptr);
+        EXPECT_NE(frameHandler1, nullptr);
+
+        // Activate the display
+        ASSERT_TRUE(pDisplay->setDisplayState(DisplayState::VISIBLE_ON_NEXT_FRAME).isOk());
+
+        // Start the camera's video stream
+        ASSERT_TRUE(frameHandler0->startStream());
+        ASSERT_TRUE(frameHandler1->startStream());
+
+        // Ensure the stream starts
+        frameHandler0->waitForFrameCount(1);
+        frameHandler1->waitForFrameCount(1);
+
+        // Client 1 becomes a primary client and programs a parameter.
+
+        // Get a valid parameter value range
+        ParameterRange range;
+        ASSERT_TRUE(pCam1->getIntParameterRange(cam1Cmds[0], &range).isOk());
+
+        // Client1 becomes a primary client
+        ASSERT_TRUE(pCam1->setPrimaryClient().isOk());
+
+        std::vector<int32_t> values;
+        EvsEventDesc aTargetEvent = {};
+        EvsEventDesc aNotification = {};
+        bool listening = false;
+        std::mutex eventLock;
+        std::condition_variable eventCond;
+        if (cam1Cmds[0] == CameraParam::ABSOLUTE_FOCUS) {
+            std::thread listener =
+                    std::thread([&frameHandler0, &aNotification, &listening, &eventCond] {
+                        listening = true;
+                        eventCond.notify_all();
+
+                        EvsEventDesc aTargetEvent;
+                        aTargetEvent.aType = EvsEventType::PARAMETER_CHANGED;
+                        aTargetEvent.payload[0] = static_cast<uint32_t>(CameraParam::AUTO_FOCUS);
+                        aTargetEvent.payload[1] = 0;
+                        if (!frameHandler0->waitForEvent(aTargetEvent, aNotification)) {
+                            LOG(WARNING) << "A timer is expired before a target event is fired.";
+                        }
+                    });
+
+            // Wait until a lister starts.
+            std::unique_lock<std::mutex> lock(eventLock);
+            auto timer = std::chrono::system_clock::now();
+            while (!listening) {
+                eventCond.wait_until(lock, timer + 1s);
+            }
+            lock.unlock();
+
+            // Try to turn off auto-focus
+            ASSERT_TRUE(pCam1->setIntParameter(CameraParam::AUTO_FOCUS, 0, &values).isOk());
+            for (auto&& v : values) {
+                EXPECT_EQ(v, 0);
+            }
+
+            // Join a listener
+            if (listener.joinable()) {
+                listener.join();
+            }
+
+            // Make sure AUTO_FOCUS is off.
+            ASSERT_EQ(static_cast<EvsEventType>(aNotification.aType),
+                      EvsEventType::PARAMETER_CHANGED);
+        }
+
+        // Try to program a parameter with a random value [minVal, maxVal] after
+        // rounding it down.
+        int32_t val0 = range.min + (std::rand() % (range.max - range.min));
+        val0 = val0 - (val0 % range.step);
+
+        std::thread listener = std::thread(
+                [&frameHandler1, &aNotification, &listening, &eventCond, &cam1Cmds, val0] {
+                    listening = true;
+                    eventCond.notify_all();
+
+                    EvsEventDesc aTargetEvent;
+                    aTargetEvent.aType = EvsEventType::PARAMETER_CHANGED;
+                    aTargetEvent.payload[0] = static_cast<uint32_t>(cam1Cmds[0]);
+                    aTargetEvent.payload[1] = val0;
+                    if (!frameHandler1->waitForEvent(aTargetEvent, aNotification)) {
+                        LOG(WARNING) << "A timer is expired before a target event is fired.";
+                    }
+                });
+
+        // Wait until a lister starts.
+        listening = false;
+        std::unique_lock<std::mutex> lock(eventLock);
+        auto timer = std::chrono::system_clock::now();
+        while (!listening) {
+            eventCond.wait_until(lock, timer + 1s);
+        }
+        lock.unlock();
+
+        values.clear();
+        ASSERT_TRUE(pCam1->setIntParameter(cam1Cmds[0], val0, &values).isOk());
+        for (auto&& v : values) {
+            EXPECT_EQ(val0, v);
+        }
+
+        // Join a listener
+        if (listener.joinable()) {
+            listener.join();
+        }
+
+        // Verify a change notification
+        ASSERT_EQ(static_cast<EvsEventType>(aNotification.aType), EvsEventType::PARAMETER_CHANGED);
+        ASSERT_EQ(static_cast<CameraParam>(aNotification.payload[0]), cam1Cmds[0]);
+        for (auto&& v : values) {
+            ASSERT_EQ(v, static_cast<int32_t>(aNotification.payload[1]));
+        }
+
+        listener = std::thread([&frameHandler1, &aNotification, &listening, &eventCond] {
+            listening = true;
+            eventCond.notify_all();
+
+            EvsEventDesc aTargetEvent;
+            aTargetEvent.aType = EvsEventType::MASTER_RELEASED;
+            if (!frameHandler1->waitForEvent(aTargetEvent, aNotification, true)) {
+                LOG(WARNING) << "A timer is expired before a target event is fired.";
+            }
+        });
+
+        // Wait until a lister starts.
+        listening = false;
+        lock.lock();
+        timer = std::chrono::system_clock::now();
+        while (!listening) {
+            eventCond.wait_until(lock, timer + 1s);
+        }
+        lock.unlock();
+
+        // Client 0 steals a primary client role
+        ASSERT_TRUE(pCam0->forcePrimaryClient(pDisplay).isOk());
+
+        // Join a listener
+        if (listener.joinable()) {
+            listener.join();
+        }
+
+        ASSERT_EQ(static_cast<EvsEventType>(aNotification.aType), EvsEventType::MASTER_RELEASED);
+
+        // Client 0 programs a parameter
+        val0 = range.min + (std::rand() % (range.max - range.min));
+
+        // Rounding down
+        val0 = val0 - (val0 % range.step);
+
+        if (cam0Cmds[0] == CameraParam::ABSOLUTE_FOCUS) {
+            std::thread listener =
+                    std::thread([&frameHandler1, &aNotification, &listening, &eventCond] {
+                        listening = true;
+                        eventCond.notify_all();
+
+                        EvsEventDesc aTargetEvent;
+                        aTargetEvent.aType = EvsEventType::PARAMETER_CHANGED;
+                        aTargetEvent.payload[0] = static_cast<uint32_t>(CameraParam::AUTO_FOCUS);
+                        aTargetEvent.payload[1] = 0;
+                        if (!frameHandler1->waitForEvent(aTargetEvent, aNotification)) {
+                            LOG(WARNING) << "A timer is expired before a target event is fired.";
+                        }
+                    });
+
+            // Wait until a lister starts.
+            std::unique_lock<std::mutex> lock(eventLock);
+            auto timer = std::chrono::system_clock::now();
+            while (!listening) {
+                eventCond.wait_until(lock, timer + 1s);
+            }
+            lock.unlock();
+
+            // Try to turn off auto-focus
+            values.clear();
+            ASSERT_TRUE(pCam0->setIntParameter(CameraParam::AUTO_FOCUS, 0, &values).isOk());
+            for (auto&& v : values) {
+                EXPECT_EQ(v, 0);
+            }
+
+            // Join a listener
+            if (listener.joinable()) {
+                listener.join();
+            }
+
+            // Make sure AUTO_FOCUS is off.
+            ASSERT_EQ(static_cast<EvsEventType>(aNotification.aType),
+                      EvsEventType::PARAMETER_CHANGED);
+        }
+
+        listener = std::thread(
+                [&frameHandler0, &aNotification, &listening, &eventCond, &cam0Cmds, val0] {
+                    listening = true;
+                    eventCond.notify_all();
+
+                    EvsEventDesc aTargetEvent;
+                    aTargetEvent.aType = EvsEventType::PARAMETER_CHANGED;
+                    aTargetEvent.payload[0] = static_cast<uint32_t>(cam0Cmds[0]);
+                    aTargetEvent.payload[1] = val0;
+                    if (!frameHandler0->waitForEvent(aTargetEvent, aNotification)) {
+                        LOG(WARNING) << "A timer is expired before a target event is fired.";
+                    }
+                });
+
+        // Wait until a lister starts.
+        listening = false;
+        timer = std::chrono::system_clock::now();
+        lock.lock();
+        while (!listening) {
+            eventCond.wait_until(lock, timer + 1s);
+        }
+        lock.unlock();
+
+        values.clear();
+        ASSERT_TRUE(pCam0->setIntParameter(cam0Cmds[0], val0, &values).isOk());
+
+        // Join a listener
+        if (listener.joinable()) {
+            listener.join();
+        }
+        // Verify a change notification
+        ASSERT_EQ(static_cast<EvsEventType>(aNotification.aType), EvsEventType::PARAMETER_CHANGED);
+        ASSERT_EQ(static_cast<CameraParam>(aNotification.payload[0]), cam0Cmds[0]);
+        for (auto&& v : values) {
+            ASSERT_EQ(v, static_cast<int32_t>(aNotification.payload[1]));
+        }
+
+        // Turn off the display (yes, before the stream stops -- it should be handled)
+        ASSERT_TRUE(pDisplay->setDisplayState(DisplayState::NOT_VISIBLE).isOk());
+
+        // Shut down the streamer
+        frameHandler0->shutdown();
+        frameHandler1->shutdown();
+
+        // Explicitly release the camera
+        ASSERT_TRUE(mEnumerator->closeCamera(pCam0).isOk());
+        ASSERT_TRUE(mEnumerator->closeCamera(pCam1).isOk());
+        mActiveCameras.clear();
+    }
+
+    // Explicitly release the display
+    ASSERT_TRUE(mEnumerator->closeDisplay(pDisplay).isOk());
+}
+
+/*
+ * CameraUseStreamConfigToDisplay:
+ * End to end test of data flowing from the camera to the display.  Similar to
+ * CameraToDisplayRoundTrip test case but this case retrieves available stream
+ * configurations from EVS and uses one of them to start a video stream.
+ */
+TEST_P(EvsAidlTest, CameraUseStreamConfigToDisplay) {
+    LOG(INFO) << "Starting CameraUseStreamConfigToDisplay test";
+
+    // Get the camera list
+    loadCameraList();
+
+    // Request available display IDs
+    uint8_t targetDisplayId = 0;
+    std::vector<uint8_t> displayIds;
+    ASSERT_TRUE(mEnumerator->getDisplayIdList(&displayIds).isOk());
+    EXPECT_GT(displayIds.size(), 0);
+    targetDisplayId = displayIds[0];
+
+    // Request exclusive access to the EVS display
+    std::shared_ptr<IEvsDisplay> pDisplay;
+    ASSERT_TRUE(mEnumerator->openDisplay(targetDisplayId, &pDisplay).isOk());
+    EXPECT_NE(pDisplay, nullptr);
+
+    // Test each reported camera
+    for (auto&& cam : mCameraInfo) {
+        // choose a configuration that has a frame rate faster than minReqFps.
+        Stream targetCfg = {};
+        const int32_t minReqFps = 15;
+        int32_t maxArea = 0;
+        camera_metadata_entry_t streamCfgs;
+        bool foundCfg = false;
+        if (!find_camera_metadata_entry(reinterpret_cast<camera_metadata_t*>(cam.metadata.data()),
+                                        ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS,
+                                        &streamCfgs)) {
+            // Stream configurations are found in metadata
+            RawStreamConfig* ptr = reinterpret_cast<RawStreamConfig*>(streamCfgs.data.i32);
+            for (unsigned offset = 0; offset < streamCfgs.count; offset += kStreamCfgSz) {
+                if (ptr->direction == ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT &&
+                    ptr->format == HAL_PIXEL_FORMAT_RGBA_8888) {
+                    if (ptr->width * ptr->height > maxArea && ptr->framerate >= minReqFps) {
+                        targetCfg.width = ptr->width;
+                        targetCfg.height = ptr->height;
+
+                        maxArea = ptr->width * ptr->height;
+                        foundCfg = true;
+                    }
+                }
+                ++ptr;
+            }
+        }
+        targetCfg.format = static_cast<PixelFormat>(HAL_PIXEL_FORMAT_RGBA_8888);
+
+        if (!foundCfg) {
+            // Current EVS camera does not provide stream configurations in the
+            // metadata.
+            continue;
+        }
+
+        std::shared_ptr<IEvsCamera> pCam;
+        ASSERT_TRUE(mEnumerator->openCamera(cam.id, targetCfg, &pCam).isOk());
+        EXPECT_NE(pCam, nullptr);
+
+        // Store a camera handle for a clean-up
+        mActiveCameras.push_back(pCam);
+
+        // Set up a frame receiver object which will fire up its own thread.
+        std::shared_ptr<FrameHandler> frameHandler =
+                std::make_shared<FrameHandler>(pCam, cam, pDisplay, FrameHandler::eAutoReturn);
+        EXPECT_NE(frameHandler, nullptr);
+
+        // Activate the display
+        ASSERT_TRUE(pDisplay->setDisplayState(DisplayState::VISIBLE_ON_NEXT_FRAME).isOk());
+
+        // Start the camera's video stream
+        ASSERT_TRUE(frameHandler->startStream());
+
+        // Wait a while to let the data flow
+        static const int kSecondsToWait = 5;
+        const int streamTimeMs =
+                kSecondsToWait * kSecondsToMilliseconds - kMaxStreamStartMilliseconds;
+        const unsigned minimumFramesExpected =
+                streamTimeMs * kMinimumFramesPerSecond / kSecondsToMilliseconds;
+        sleep(kSecondsToWait);
+        unsigned framesReceived = 0;
+        unsigned framesDisplayed = 0;
+        frameHandler->getFramesCounters(&framesReceived, &framesDisplayed);
+        EXPECT_EQ(framesReceived, framesDisplayed);
+        EXPECT_GE(framesDisplayed, minimumFramesExpected);
+
+        // Turn off the display (yes, before the stream stops -- it should be handled)
+        ASSERT_TRUE(pDisplay->setDisplayState(DisplayState::NOT_VISIBLE).isOk());
+
+        // Shut down the streamer
+        frameHandler->shutdown();
+
+        // Explicitly release the camera
+        ASSERT_TRUE(mEnumerator->closeCamera(pCam).isOk());
+        mActiveCameras.clear();
+    }
+
+    // Explicitly release the display
+    ASSERT_TRUE(mEnumerator->closeDisplay(pDisplay).isOk());
+}
+
+/*
+ * MultiCameraStreamUseConfig:
+ * Verify that each client can start and stop video streams on the same
+ * underlying camera with same configuration.
+ */
+TEST_P(EvsAidlTest, MultiCameraStreamUseConfig) {
+    LOG(INFO) << "Starting MultiCameraStream test";
+
+    if (mIsHwModule) {
+        // This test is not for HW module implementation.
+        return;
+    }
+
+    // Get the camera list
+    loadCameraList();
+
+    // Test each reported camera
+    for (auto&& cam : mCameraInfo) {
+        // choose a configuration that has a frame rate faster than minReqFps.
+        Stream targetCfg = {};
+        const int32_t minReqFps = 15;
+        int32_t maxArea = 0;
+        camera_metadata_entry_t streamCfgs;
+        bool foundCfg = false;
+        if (!find_camera_metadata_entry(reinterpret_cast<camera_metadata_t*>(cam.metadata.data()),
+                                        ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS,
+                                        &streamCfgs)) {
+            // Stream configurations are found in metadata
+            RawStreamConfig* ptr = reinterpret_cast<RawStreamConfig*>(streamCfgs.data.i32);
+            for (unsigned offset = 0; offset < streamCfgs.count; offset += kStreamCfgSz) {
+                if (ptr->direction == ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT &&
+                    ptr->format == HAL_PIXEL_FORMAT_RGBA_8888) {
+                    if (ptr->width * ptr->height > maxArea && ptr->framerate >= minReqFps) {
+                        targetCfg.width = ptr->width;
+                        targetCfg.height = ptr->height;
+
+                        maxArea = ptr->width * ptr->height;
+                        foundCfg = true;
+                    }
+                }
+                ++ptr;
+            }
+        }
+        targetCfg.format = static_cast<PixelFormat>(HAL_PIXEL_FORMAT_RGBA_8888);
+
+        if (!foundCfg) {
+            LOG(INFO) << "Device " << cam.id
+                      << " does not provide a list of supported stream configurations, skipped";
+            continue;
+        }
+
+        // Create the first camera client with a selected stream configuration.
+        std::shared_ptr<IEvsCamera> pCam0;
+        ASSERT_TRUE(mEnumerator->openCamera(cam.id, targetCfg, &pCam0).isOk());
+        EXPECT_NE(pCam0, nullptr);
+
+        // Store a camera handle for a clean-up
+        mActiveCameras.push_back(pCam0);
+
+        // Try to create the second camera client with different stream
+        // configuration.
+        int32_t id = targetCfg.id;
+        targetCfg.id += 1;  // EVS manager sees only the stream id.
+        std::shared_ptr<IEvsCamera> pCam1;
+        ASSERT_FALSE(mEnumerator->openCamera(cam.id, targetCfg, &pCam1).isOk());
+
+        // Try again with same stream configuration.
+        targetCfg.id = id;
+        ASSERT_TRUE(mEnumerator->openCamera(cam.id, targetCfg, &pCam1).isOk());
+        EXPECT_NE(pCam1, nullptr);
+
+        // Set up per-client frame receiver objects which will fire up its own thread
+        std::shared_ptr<FrameHandler> frameHandler0 =
+                std::make_shared<FrameHandler>(pCam0, cam, nullptr, FrameHandler::eAutoReturn);
+        std::shared_ptr<FrameHandler> frameHandler1 =
+                std::make_shared<FrameHandler>(pCam1, cam, nullptr, FrameHandler::eAutoReturn);
+        EXPECT_NE(frameHandler0, nullptr);
+        EXPECT_NE(frameHandler1, nullptr);
+
+        // Start the camera's video stream via client 0
+        ASSERT_TRUE(frameHandler0->startStream());
+        ASSERT_TRUE(frameHandler1->startStream());
+
+        // Ensure the stream starts
+        frameHandler0->waitForFrameCount(1);
+        frameHandler1->waitForFrameCount(1);
+
+        nsecs_t firstFrame = systemTime(SYSTEM_TIME_MONOTONIC);
+
+        // Wait a bit, then ensure both clients get at least the required minimum number of frames
+        sleep(5);
+        nsecs_t end = systemTime(SYSTEM_TIME_MONOTONIC);
+        unsigned framesReceived0 = 0, framesReceived1 = 0;
+        frameHandler0->getFramesCounters(&framesReceived0, nullptr);
+        frameHandler1->getFramesCounters(&framesReceived1, nullptr);
+        framesReceived0 = framesReceived0 - 1;  // Back out the first frame we already waited for
+        framesReceived1 = framesReceived1 - 1;  // Back out the first frame we already waited for
+        nsecs_t runTime = end - firstFrame;
+        float framesPerSecond0 = framesReceived0 / (runTime * kNanoToSeconds);
+        float framesPerSecond1 = framesReceived1 / (runTime * kNanoToSeconds);
+        LOG(INFO) << "Measured camera rate " << std::scientific << framesPerSecond0 << " fps and "
+                  << framesPerSecond1 << " fps";
+        EXPECT_GE(framesPerSecond0, kMinimumFramesPerSecond);
+        EXPECT_GE(framesPerSecond1, kMinimumFramesPerSecond);
+
+        // Shutdown one client
+        frameHandler0->shutdown();
+
+        // Read frame counters again
+        frameHandler0->getFramesCounters(&framesReceived0, nullptr);
+        frameHandler1->getFramesCounters(&framesReceived1, nullptr);
+
+        // Wait a bit again
+        sleep(5);
+        unsigned framesReceivedAfterStop0 = 0, framesReceivedAfterStop1 = 0;
+        frameHandler0->getFramesCounters(&framesReceivedAfterStop0, nullptr);
+        frameHandler1->getFramesCounters(&framesReceivedAfterStop1, nullptr);
+        EXPECT_EQ(framesReceived0, framesReceivedAfterStop0);
+        EXPECT_LT(framesReceived1, framesReceivedAfterStop1);
+
+        // Shutdown another
+        frameHandler1->shutdown();
+
+        // Explicitly release the camera
+        ASSERT_TRUE(mEnumerator->closeCamera(pCam0).isOk());
+        ASSERT_TRUE(mEnumerator->closeCamera(pCam1).isOk());
+        mActiveCameras.clear();
+    }
+}
+
+/*
+ * LogicalCameraMetadata:
+ * Opens logical camera reported by the enumerator and validate its metadata by
+ * checking its capability and locating supporting physical camera device
+ * identifiers.
+ */
+TEST_P(EvsAidlTest, LogicalCameraMetadata) {
+    LOG(INFO) << "Starting LogicalCameraMetadata test";
+
+    // Get the camera list
+    loadCameraList();
+
+    // Open and close each camera twice
+    for (auto&& cam : mCameraInfo) {
+        bool isLogicalCam = false;
+        auto devices = getPhysicalCameraIds(cam.id, isLogicalCam);
+        if (isLogicalCam) {
+            ASSERT_GE(devices.size(), 1) << "Logical camera device must have at least one physical "
+                                            "camera device ID in its metadata.";
+        }
+    }
+}
+
+/*
+ * CameraStreamExternalBuffering:
+ * This is same with CameraStreamBuffering except frame buffers are allocated by
+ * the test client and then imported by EVS framework.
+ */
+TEST_P(EvsAidlTest, CameraStreamExternalBuffering) {
+    LOG(INFO) << "Starting CameraStreamExternalBuffering test";
+
+    // Arbitrary constant (should be > 1 and not too big)
+    static const unsigned int kBuffersToHold = 3;
+
+    // Get the camera list
+    loadCameraList();
+
+    // Acquire the graphics buffer allocator
+    android::GraphicBufferAllocator& alloc(android::GraphicBufferAllocator::get());
+    const auto usage =
+            GRALLOC_USAGE_HW_TEXTURE | GRALLOC_USAGE_SW_READ_RARELY | GRALLOC_USAGE_SW_WRITE_OFTEN;
+
+    // Test each reported camera
+    for (auto&& cam : mCameraInfo) {
+        // Read a target resolution from the metadata
+        Stream targetCfg = getFirstStreamConfiguration(
+                reinterpret_cast<camera_metadata_t*>(cam.metadata.data()));
+        ASSERT_GT(targetCfg.width, 0);
+        ASSERT_GT(targetCfg.height, 0);
+
+        // Allocate buffers to use
+        std::vector<BufferDesc> buffers;
+        buffers.resize(kBuffersToHold);
+        for (auto i = 0; i < kBuffersToHold; ++i) {
+            unsigned pixelsPerLine;
+            buffer_handle_t memHandle = nullptr;
+            android::status_t result =
+                    alloc.allocate(targetCfg.width, targetCfg.height,
+                                   static_cast<android::PixelFormat>(targetCfg.format),
+                                   /* layerCount = */ 1, usage, &memHandle, &pixelsPerLine,
+                                   /* graphicBufferId = */ 0,
+                                   /* requestorName = */ "CameraStreamExternalBufferingTest");
+            if (result != android::NO_ERROR) {
+                LOG(ERROR) << __FUNCTION__ << " failed to allocate memory.";
+                // Release previous allocated buffers
+                for (auto j = 0; j < i; j++) {
+                    alloc.free(::android::dupFromAidl(buffers[i].buffer.handle));
+                }
+                return;
+            } else {
+                BufferDesc buf;
+                HardwareBufferDescription* pDesc =
+                        reinterpret_cast<HardwareBufferDescription*>(&buf.buffer.description);
+                pDesc->width = targetCfg.width;
+                pDesc->height = targetCfg.height;
+                pDesc->layers = 1;
+                pDesc->format = targetCfg.format;
+                pDesc->usage = static_cast<BufferUsage>(usage);
+                pDesc->stride = pixelsPerLine;
+                buf.buffer.handle = ::android::dupToAidl(memHandle);
+                buf.bufferId = i;  // Unique number to identify this buffer
+                buffers[i] = std::move(buf);
+            }
+        }
+
+        bool isLogicalCam = false;
+        getPhysicalCameraIds(cam.id, isLogicalCam);
+
+        std::shared_ptr<IEvsCamera> pCam;
+        ASSERT_TRUE(mEnumerator->openCamera(cam.id, targetCfg, &pCam).isOk());
+        EXPECT_NE(pCam, nullptr);
+
+        // Store a camera handle for a clean-up
+        mActiveCameras.push_back(pCam);
+
+        // Request to import buffers
+        int delta = 0;
+        auto status = pCam->importExternalBuffers(buffers, &delta);
+        if (isLogicalCam) {
+            ASSERT_FALSE(status.isOk());
+            continue;
+        }
+
+        ASSERT_TRUE(status.isOk());
+        EXPECT_GE(delta, kBuffersToHold);
+
+        // Set up a frame receiver object which will fire up its own thread.
+        std::shared_ptr<FrameHandler> frameHandler =
+                std::make_shared<FrameHandler>(pCam, cam, nullptr, FrameHandler::eNoAutoReturn);
+        EXPECT_NE(frameHandler, nullptr);
+
+        // Start the camera's video stream
+        ASSERT_TRUE(frameHandler->startStream());
+
+        // Check that the video stream stalls once we've gotten exactly the number of buffers
+        // we requested since we told the frameHandler not to return them.
+        sleep(1);  // 1 second should be enough for at least 5 frames to be delivered worst case
+        unsigned framesReceived = 0;
+        frameHandler->getFramesCounters(&framesReceived, nullptr);
+        ASSERT_LE(kBuffersToHold, framesReceived) << "Stream didn't stall at expected buffer limit";
+
+        // Give back one buffer
+        EXPECT_TRUE(frameHandler->returnHeldBuffer());
+
+        // Once we return a buffer, it shouldn't take more than 1/10 second to get a new one
+        // filled since we require 10fps minimum -- but give a 10% allowance just in case.
+        unsigned framesReceivedAfter = 0;
+        usleep(110 * kMillisecondsToMicroseconds);
+        frameHandler->getFramesCounters(&framesReceivedAfter, nullptr);
+        EXPECT_EQ(framesReceived + 1, framesReceivedAfter) << "Stream should've resumed";
+
+        // Even when the camera pointer goes out of scope, the FrameHandler object will
+        // keep the stream alive unless we tell it to shutdown.
+        // Also note that the FrameHandle and the Camera have a mutual circular reference, so
+        // we have to break that cycle in order for either of them to get cleaned up.
+        frameHandler->shutdown();
+
+        // Explicitly release the camera
+        ASSERT_TRUE(mEnumerator->closeCamera(pCam).isOk());
+        mActiveCameras.clear();
+        // Release buffers
+        for (auto& b : buffers) {
+            alloc.free(::android::dupFromAidl(b.buffer.handle));
+        }
+        buffers.resize(0);
+    }
+}
+
+/*
+ * UltrasonicsArrayOpenClean:
+ * Opens each ultrasonics arrays reported by the enumerator and then explicitly closes it via a
+ * call to closeUltrasonicsArray. Then repeats the test to ensure all ultrasonics arrays
+ * can be reopened.
+ */
+TEST_P(EvsAidlTest, UltrasonicsArrayOpenClean) {
+    LOG(INFO) << "Starting UltrasonicsArrayOpenClean test";
+
+    // Get the ultrasonics array list
+    loadUltrasonicsArrayList();
+
+    // Open and close each ultrasonics array twice
+    for (auto&& ultraInfo : mUltrasonicsArraysInfo) {
+        for (int pass = 0; pass < 2; pass++) {
+            std::shared_ptr<IEvsUltrasonicsArray> pUltrasonicsArray;
+            ASSERT_TRUE(
+                    mEnumerator
+                            ->openUltrasonicsArray(ultraInfo.ultrasonicsArrayId, &pUltrasonicsArray)
+                            .isOk());
+            EXPECT_NE(pUltrasonicsArray, nullptr);
+
+            // Verify that this ultrasonics array self-identifies correctly
+            UltrasonicsArrayDesc desc;
+            ASSERT_TRUE(pUltrasonicsArray->getUltrasonicArrayInfo(&desc).isOk());
+            EXPECT_EQ(ultraInfo.ultrasonicsArrayId, desc.ultrasonicsArrayId);
+            LOG(DEBUG) << "Found ultrasonics array " << ultraInfo.ultrasonicsArrayId;
+
+            // Explicitly close the ultrasonics array so resources are released right away
+            ASSERT_TRUE(mEnumerator->closeUltrasonicsArray(pUltrasonicsArray).isOk());
+        }
+    }
+}
+
+// Starts a stream and verifies all data received is valid.
+TEST_P(EvsAidlTest, UltrasonicsVerifyStreamData) {
+    LOG(INFO) << "Starting UltrasonicsVerifyStreamData";
+
+    // Get the ultrasonics array list
+    loadUltrasonicsArrayList();
+
+    // For each ultrasonics array.
+    for (auto&& ultraInfo : mUltrasonicsArraysInfo) {
+        LOG(DEBUG) << "Testing ultrasonics array: " << ultraInfo.ultrasonicsArrayId;
+
+        std::shared_ptr<IEvsUltrasonicsArray> pUltrasonicsArray;
+        ASSERT_TRUE(
+                mEnumerator->openUltrasonicsArray(ultraInfo.ultrasonicsArrayId, &pUltrasonicsArray)
+                        .isOk());
+        EXPECT_NE(pUltrasonicsArray, nullptr);
+
+        std::shared_ptr<FrameHandlerUltrasonics> frameHandler =
+                std::make_shared<FrameHandlerUltrasonics>(pUltrasonicsArray);
+        EXPECT_NE(frameHandler, nullptr);
+
+        // Start stream.
+        ASSERT_TRUE(pUltrasonicsArray->startStream(frameHandler).isOk());
+
+        // Wait 5 seconds to receive frames.
+        sleep(5);
+
+        // Stop stream.
+        ASSERT_TRUE(pUltrasonicsArray->stopStream().isOk());
+
+        EXPECT_GT(frameHandler->getReceiveFramesCount(), 0);
+        EXPECT_TRUE(frameHandler->areAllFramesValid());
+
+        // Explicitly close the ultrasonics array so resources are released right away
+        ASSERT_TRUE(mEnumerator->closeUltrasonicsArray(pUltrasonicsArray).isOk());
+    }
+}
+
+// Sets frames in flight before and after start of stream and verfies success.
+TEST_P(EvsAidlTest, UltrasonicsSetFramesInFlight) {
+    LOG(INFO) << "Starting UltrasonicsSetFramesInFlight";
+
+    // Get the ultrasonics array list
+    loadUltrasonicsArrayList();
+
+    // For each ultrasonics array.
+    for (auto&& ultraInfo : mUltrasonicsArraysInfo) {
+        LOG(DEBUG) << "Testing ultrasonics array: " << ultraInfo.ultrasonicsArrayId;
+
+        std::shared_ptr<IEvsUltrasonicsArray> pUltrasonicsArray;
+        ASSERT_TRUE(
+                mEnumerator->openUltrasonicsArray(ultraInfo.ultrasonicsArrayId, &pUltrasonicsArray)
+                        .isOk());
+        EXPECT_NE(pUltrasonicsArray, nullptr);
+
+        ASSERT_TRUE(pUltrasonicsArray->setMaxFramesInFlight(10).isOk());
+
+        std::shared_ptr<FrameHandlerUltrasonics> frameHandler =
+                std::make_shared<FrameHandlerUltrasonics>(pUltrasonicsArray);
+        EXPECT_NE(frameHandler, nullptr);
+
+        // Start stream.
+        ASSERT_TRUE(pUltrasonicsArray->startStream(frameHandler).isOk());
+        ASSERT_TRUE(pUltrasonicsArray->setMaxFramesInFlight(5).isOk());
+
+        // Stop stream.
+        ASSERT_TRUE(pUltrasonicsArray->stopStream().isOk());
+
+        // Explicitly close the ultrasonics array so resources are released right away
+        ASSERT_TRUE(mEnumerator->closeUltrasonicsArray(pUltrasonicsArray).isOk());
+    }
+}
+
+GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(EvsAidlTest);
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, EvsAidlTest,
+        testing::ValuesIn(android::getAidlHalInstanceNames(IEvsEnumerator::descriptor)),
+        android::PrintInstanceNameToString);
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    ABinderProcess_setThreadPoolMaxThreadCount(1);
+    ABinderProcess_startThreadPool();
+    return RUN_ALL_TESTS();
+}
diff --git a/automotive/vehicle/OWNERS b/automotive/vehicle/OWNERS
new file mode 100644
index 0000000..429ec39
--- /dev/null
+++ b/automotive/vehicle/OWNERS
@@ -0,0 +1,3 @@
+ericjeong@google.com
+keunyoung@google.com
+shanyu@google.com
diff --git a/automotive/vehicle/aidl/impl/fake_impl/hardware/test/FakeVehicleHardwareTest.cpp b/automotive/vehicle/aidl/impl/fake_impl/hardware/test/FakeVehicleHardwareTest.cpp
index f8df6e6..970d044 100644
--- a/automotive/vehicle/aidl/impl/fake_impl/hardware/test/FakeVehicleHardwareTest.cpp
+++ b/automotive/vehicle/aidl/impl/fake_impl/hardware/test/FakeVehicleHardwareTest.cpp
@@ -154,7 +154,7 @@
         return toInt(result.error());
     }
 
-    void onSetValues(const std::vector<SetValueResult> results) {
+    void onSetValues(std::vector<SetValueResult> results) {
         for (auto& result : results) {
             mSetValueResults.push_back(result);
         }
@@ -162,7 +162,7 @@
 
     const std::vector<SetValueResult>& getSetValueResults() { return mSetValueResults; }
 
-    void onGetValues(const std::vector<GetValueResult> results) {
+    void onGetValues(std::vector<GetValueResult> results) {
         for (auto& result : results) {
             mGetValueResults.push_back(result);
         }
@@ -170,7 +170,7 @@
 
     const std::vector<GetValueResult>& getGetValueResults() { return mGetValueResults; }
 
-    void onPropertyChangeEvent(const std::vector<VehiclePropValue>& values) {
+    void onPropertyChangeEvent(std::vector<VehiclePropValue> values) {
         for (auto& value : values) {
             mChangedProperties.push_back(value);
         }
diff --git a/automotive/vehicle/aidl/impl/utils/common/include/VehicleHalTypes.h b/automotive/vehicle/aidl/impl/utils/common/include/VehicleHalTypes.h
index 013d177..a7fcdcf 100644
--- a/automotive/vehicle/aidl/impl/utils/common/include/VehicleHalTypes.h
+++ b/automotive/vehicle/aidl/impl/utils/common/include/VehicleHalTypes.h
@@ -37,6 +37,7 @@
 #include <aidl/android/hardware/automotive/vehicle/SetValueResult.h>
 #include <aidl/android/hardware/automotive/vehicle/SetValueResults.h>
 #include <aidl/android/hardware/automotive/vehicle/StatusCode.h>
+#include <aidl/android/hardware/automotive/vehicle/SubscribeOptions.h>
 #include <aidl/android/hardware/automotive/vehicle/VehicleApPowerStateReport.h>
 #include <aidl/android/hardware/automotive/vehicle/VehicleApPowerStateReq.h>
 #include <aidl/android/hardware/automotive/vehicle/VehicleArea.h>
diff --git a/automotive/vehicle/aidl/impl/utils/common/include/VehicleUtils.h b/automotive/vehicle/aidl/impl/utils/common/include/VehicleUtils.h
index 63eb747..49b33d5 100644
--- a/automotive/vehicle/aidl/impl/utils/common/include/VehicleUtils.h
+++ b/automotive/vehicle/aidl/impl/utils/common/include/VehicleUtils.h
@@ -213,7 +213,7 @@
 ::ndk::ScopedAStatus toScopedAStatus(
         const ::android::base::Result<T>& result,
         ::aidl::android::hardware::automotive::vehicle::StatusCode status,
-        std::string additionalErrorMsg) {
+        const std::string& additionalErrorMsg) {
     if (result.ok()) {
         return ::ndk::ScopedAStatus::ok();
     }
@@ -236,10 +236,50 @@
 
 template <class T>
 ::ndk::ScopedAStatus toScopedAStatus(const ::android::base::Result<T>& result,
-                                     std::string additionalErrorMsg) {
+                                     const std::string& additionalErrorMsg) {
     return toScopedAStatus(result, getErrorCode(result), additionalErrorMsg);
 }
 
+// Check whether the value is valid according to config.
+// We check for the following:
+// *  If the type is INT32, {@code value.int32Values} must contain one element.
+// *  If the type is INT32_VEC, {@code value.int32Values} must contain at least one element.
+// *  If the type is INT64, {@code value.int64Values} must contain one element.
+// *  If the type is INT64_VEC, {@code value.int64Values} must contain at least one element.
+// *  If the type is FLOAT, {@code value.floatValues} must contain one element.
+// *  If the type is FLOAT_VEC, {@code value.floatValues} must contain at least one element.
+// *  If the type is MIXED, see checkVendorMixedPropValue.
+::android::base::Result<void> checkPropValue(
+        const ::aidl::android::hardware::automotive::vehicle::VehiclePropValue& value,
+        const ::aidl::android::hardware::automotive::vehicle::VehiclePropConfig* config);
+
+// Check whether the Mixed type value is valid according to config.
+// We check for the following:
+// *  configArray[1] + configArray[2] + configArray[3] must be equal to the number of
+//    {@code value.int32Values} elements.
+// *  configArray[4] + configArray[5] must be equal to the number of {@code value.int64Values}
+//    elements.
+// *  configArray[6] + configArray[7] must be equal to the number of {@code value.floatValues}
+//    elements.
+// *  configArray[8] must be equal to the number of {@code value.byteValues} elements.
+::android::base::Result<void> checkVendorMixedPropValue(
+        const ::aidl::android::hardware::automotive::vehicle::VehiclePropValue& value,
+        const ::aidl::android::hardware::automotive::vehicle::VehiclePropConfig* config);
+
+// Check whether the value is within the configured range.
+// We check for the following types:
+// *  If type is INT32 or INT32_VEC, all {@code value.int32Values} elements must be within
+//    {@code minInt32Value} and {@code maxInt32Value} if either of them is not 0.
+// *  If type is INT64 or INT64_VEC, all {@code value.int64Values} elements must be within
+//    {@code minInt64Value} and {@code maxInt64Value} if either of them is not 0.
+// *  If type is FLOAT or FLOAT_VEC, all {@code value.floatValues} elements must be within
+//    {@code minFloatValues} and {@code maxFloatValues} if either of them is not 0.
+// We don't check other types. If more checks are required, they should be added in VehicleHardware
+// implementation.
+::android::base::Result<void> checkValueRange(
+        const ::aidl::android::hardware::automotive::vehicle::VehiclePropValue& value,
+        const ::aidl::android::hardware::automotive::vehicle::VehicleAreaConfig* config);
+
 }  // namespace vehicle
 }  // namespace automotive
 }  // namespace hardware
diff --git a/automotive/vehicle/aidl/impl/utils/common/src/VehicleUtils.cpp b/automotive/vehicle/aidl/impl/utils/common/src/VehicleUtils.cpp
new file mode 100644
index 0000000..5abde8d
--- /dev/null
+++ b/automotive/vehicle/aidl/impl/utils/common/src/VehicleUtils.cpp
@@ -0,0 +1,210 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "VehicleUtils.h"
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace vehicle {
+
+using ::aidl::android::hardware::automotive::vehicle::VehicleAreaConfig;
+using ::aidl::android::hardware::automotive::vehicle::VehiclePropConfig;
+using ::aidl::android::hardware::automotive::vehicle::VehiclePropertyGroup;
+using ::aidl::android::hardware::automotive::vehicle::VehiclePropertyType;
+using ::aidl::android::hardware::automotive::vehicle::VehiclePropValue;
+using ::android::base::Error;
+using ::android::base::Result;
+using ::ndk::ScopedAStatus;
+
+Result<void> checkPropValue(const VehiclePropValue& value, const VehiclePropConfig* config) {
+    int32_t property = value.prop;
+    VehiclePropertyType type = getPropType(property);
+    switch (type) {
+        case VehiclePropertyType::BOOLEAN:
+            [[fallthrough]];
+        case VehiclePropertyType::INT32:
+            if (value.value.int32Values.size() != 1) {
+                return Error() << "expect 1 int32Values for INT32 type";
+            }
+            break;
+        case VehiclePropertyType::INT32_VEC:
+            if (value.value.int32Values.size() < 1) {
+                return Error() << "expect >=1 int32Values for INT32_VEC type";
+            }
+            break;
+        case VehiclePropertyType::INT64:
+            if (value.value.int64Values.size() != 1) {
+                return Error() << "expect 1 int64Values for INT64 type";
+            }
+            break;
+        case VehiclePropertyType::INT64_VEC:
+            if (value.value.int64Values.size() < 1) {
+                return Error() << "expect >=1 int64Values for INT64_VEC type";
+            }
+            break;
+        case VehiclePropertyType::FLOAT:
+            if (value.value.floatValues.size() != 1) {
+                return Error() << "expect 1 floatValues for FLOAT type";
+            }
+            break;
+        case VehiclePropertyType::FLOAT_VEC:
+            if (value.value.floatValues.size() < 1) {
+                return Error() << "expect >=1 floatValues for FLOAT_VEC type";
+            }
+            break;
+        case VehiclePropertyType::BYTES:
+            // We allow setting an empty bytes array.
+            break;
+        case VehiclePropertyType::STRING:
+            // We allow setting an empty string.
+            break;
+        case VehiclePropertyType::MIXED:
+            if (getPropGroup(property) == VehiclePropertyGroup::VENDOR) {
+                // We only checks vendor mixed properties.
+                return checkVendorMixedPropValue(value, config);
+            }
+            break;
+        default:
+            return Error() << "unknown property type: " << toInt(type);
+    }
+    return {};
+}
+
+Result<void> checkVendorMixedPropValue(const VehiclePropValue& value,
+                                       const VehiclePropConfig* config) {
+    auto configArray = config->configArray;
+    // configArray[0], 1 indicates the property has a String value, we allow the string value to
+    // be empty.
+
+    size_t int32Count = 0;
+    // configArray[1], 1 indicates the property has a Boolean value.
+    if (configArray[1] == 1) {
+        int32Count++;
+    }
+    // configArray[2], 1 indicates the property has an Integer value.
+    if (configArray[2] == 1) {
+        int32Count++;
+    }
+    // configArray[3], the number indicates the size of Integer[] in the property.
+    int32Count += static_cast<size_t>(configArray[3]);
+    size_t int32Size = value.value.int32Values.size();
+    if (int32Size != int32Count) {
+        return Error() << "invalid mixed property, got " << int32Size << " int32Values, expect "
+                       << int32Count;
+    }
+
+    size_t int64Count = 0;
+    // configArray[4], 1 indicates the property has a Long value.
+    if (configArray[4] == 1) {
+        int64Count++;
+    }
+    // configArray[5], the number indicates the size of Long[] in the property.
+    int64Count += static_cast<size_t>(configArray[5]);
+    size_t int64Size = value.value.int64Values.size();
+    if (int64Size != int64Count) {
+        return Error() << "invalid mixed property, got " << int64Size << " int64Values, expect "
+                       << int64Count;
+    }
+
+    size_t floatCount = 0;
+    // configArray[6], 1 indicates the property has a Float value.
+    if (configArray[6] == 1) {
+        floatCount++;
+    }
+    // configArray[7], the number indicates the size of Float[] in the property.
+    floatCount += static_cast<size_t>(configArray[7]);
+    size_t floatSize = value.value.floatValues.size();
+    if (floatSize != floatCount) {
+        return Error() << "invalid mixed property, got " << floatSize << " floatValues, expect "
+                       << floatCount;
+    }
+
+    // configArray[8], the number indicates the size of byte[] in the property.
+    size_t byteSize = value.value.byteValues.size();
+    size_t byteCount = static_cast<size_t>(configArray[8]);
+    if (byteCount != 0 && byteSize != byteCount) {
+        return Error() << "invalid mixed property, got " << byteSize << " byteValues, expect "
+                       << byteCount;
+    }
+    return {};
+}
+
+Result<void> checkValueRange(const VehiclePropValue& value, const VehicleAreaConfig* areaConfig) {
+    if (areaConfig == nullptr) {
+        return {};
+    }
+    int32_t property = value.prop;
+    VehiclePropertyType type = getPropType(property);
+    switch (type) {
+        case VehiclePropertyType::INT32:
+            [[fallthrough]];
+        case VehiclePropertyType::INT32_VEC:
+            if (areaConfig->minInt32Value == 0 && areaConfig->maxInt32Value == 0) {
+                break;
+            }
+            for (int32_t int32Value : value.value.int32Values) {
+                if (int32Value < areaConfig->minInt32Value ||
+                    int32Value > areaConfig->maxInt32Value) {
+                    return Error() << "int32Value: " << int32Value
+                                   << " out of range, min: " << areaConfig->minInt32Value
+                                   << " max: " << areaConfig->maxInt32Value;
+                }
+            }
+            break;
+        case VehiclePropertyType::INT64:
+            [[fallthrough]];
+        case VehiclePropertyType::INT64_VEC:
+            if (areaConfig->minInt64Value == 0 && areaConfig->maxInt64Value == 0) {
+                break;
+            }
+            for (int64_t int64Value : value.value.int64Values) {
+                if (int64Value < areaConfig->minInt64Value ||
+                    int64Value > areaConfig->maxInt64Value) {
+                    return Error() << "int64Value: " << int64Value
+                                   << " out of range, min: " << areaConfig->minInt64Value
+                                   << " max: " << areaConfig->maxInt64Value;
+                }
+            }
+            break;
+        case VehiclePropertyType::FLOAT:
+            [[fallthrough]];
+        case VehiclePropertyType::FLOAT_VEC:
+            if (areaConfig->minFloatValue == 0.f && areaConfig->maxFloatValue == 0.f) {
+                break;
+            }
+            for (float floatValue : value.value.floatValues) {
+                if (floatValue < areaConfig->minFloatValue ||
+                    floatValue > areaConfig->maxFloatValue) {
+                    return Error() << "floatValue: " << floatValue
+                                   << " out of range, min: " << areaConfig->minFloatValue
+                                   << " max: " << areaConfig->maxFloatValue;
+                }
+            }
+            break;
+        default:
+            // We don't check the rest of property types. Additional logic needs to be added if
+            // required in VehicleHardware, e.g. you might want to check the range for mixed
+            // property.
+            break;
+    }
+    return {};
+}
+
+}  // namespace vehicle
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/vehicle/aidl/impl/utils/common/test/Android.bp b/automotive/vehicle/aidl/impl/utils/common/test/Android.bp
index dd43712..250b331 100644
--- a/automotive/vehicle/aidl/impl/utils/common/test/Android.bp
+++ b/automotive/vehicle/aidl/impl/utils/common/test/Android.bp
@@ -27,6 +27,7 @@
         "libgtest",
         "libgmock",
     ],
+    header_libs: ["VehicleHalTestUtilHeaders"],
     defaults: ["VehicleHalDefaults"],
     test_suites: ["device-tests"],
 }
diff --git a/automotive/vehicle/aidl/impl/utils/common/test/VehicleUtilsTest.cpp b/automotive/vehicle/aidl/impl/utils/common/test/VehicleUtilsTest.cpp
index 131eb3b..de8b26d 100644
--- a/automotive/vehicle/aidl/impl/utils/common/test/VehicleUtilsTest.cpp
+++ b/automotive/vehicle/aidl/impl/utils/common/test/VehicleUtilsTest.cpp
@@ -16,6 +16,7 @@
 
 #include <ConcurrentQueue.h>
 #include <PropertyUtils.h>
+#include <TestPropertyUtils.h>
 #include <VehicleUtils.h>
 
 #include <gtest/gtest.h>
@@ -29,6 +30,8 @@
 namespace automotive {
 namespace vehicle {
 
+namespace {
+
 using ::aidl::android::hardware::automotive::vehicle::VehicleArea;
 using ::aidl::android::hardware::automotive::vehicle::VehicleAreaConfig;
 using ::aidl::android::hardware::automotive::vehicle::VehiclePropConfig;
@@ -37,6 +40,427 @@
 using ::aidl::android::hardware::automotive::vehicle::VehiclePropertyType;
 using ::aidl::android::hardware::automotive::vehicle::VehiclePropValue;
 
+struct InvalidPropValueTestCase {
+    std::string name;
+    VehiclePropValue value;
+    bool valid = false;
+    VehiclePropConfig config;
+};
+
+constexpr int32_t int32Prop = toInt(VehicleProperty::INFO_MODEL_YEAR);
+constexpr int32_t int32VecProp = toInt(VehicleProperty::INFO_FUEL_TYPE);
+constexpr int32_t int64Prop = toInt(VehicleProperty::ANDROID_EPOCH_TIME);
+constexpr int32_t int64VecProp = toInt(VehicleProperty::WHEEL_TICK);
+constexpr int32_t floatProp = toInt(VehicleProperty::ENV_OUTSIDE_TEMPERATURE);
+constexpr int32_t floatVecProp = toInt(VehicleProperty::HVAC_TEMPERATURE_VALUE_SUGGESTION);
+
+std::vector<InvalidPropValueTestCase> getInvalidPropValuesTestCases() {
+    return std::vector<InvalidPropValueTestCase>(
+            {
+                    InvalidPropValueTestCase{
+                            .name = "int32_normal",
+                            .value =
+                                    {
+                                            .prop = int32Prop,
+                                            .value.int32Values = {0},
+                                    },
+                            .valid = true,
+                    },
+                    InvalidPropValueTestCase{
+                            .name = "int32_no_value",
+                            .value =
+                                    {
+                                            .prop = int32Prop,
+                                    },
+                    },
+                    InvalidPropValueTestCase{
+                            .name = "int32_more_than_one_value",
+                            .value =
+                                    {
+                                            .prop = int32Prop,
+                                            .value.int32Values = {0, 1},
+                                    },
+                    },
+                    InvalidPropValueTestCase{
+                            .name = "int32_vec_normal",
+                            .value =
+                                    {
+                                            .prop = int32VecProp,
+                                            .value.int32Values = {0, 1},
+                                    },
+                            .valid = true,
+                    },
+                    InvalidPropValueTestCase{
+                            .name = "int32_vec_no_value",
+                            .value =
+                                    {
+                                            .prop = int32VecProp,
+                                    },
+                    },
+                    InvalidPropValueTestCase{
+                            .name = "int64_normal",
+                            .value =
+                                    {
+                                            .prop = int64Prop,
+                                            .value.int64Values = {0},
+                                    },
+                            .valid = true,
+                    },
+                    InvalidPropValueTestCase{
+                            .name = "int64_no_value",
+                            .value =
+                                    {
+                                            .prop = int64Prop,
+                                    },
+                    },
+                    InvalidPropValueTestCase{
+                            .name = "int64_more_than_one_value",
+                            .value =
+                                    {
+                                            .prop = int64Prop,
+                                            .value.int64Values = {0, 1},
+                                    },
+                    },
+                    InvalidPropValueTestCase{
+                            .name = "int64_vec_normal",
+                            .value =
+                                    {
+                                            .prop = int64VecProp,
+                                            .value.int64Values = {0, 1},
+                                    },
+                            .valid = true,
+                    },
+                    InvalidPropValueTestCase{
+                            .name = "int64_vec_no_value",
+                            .value =
+                                    {
+                                            .prop = int64VecProp,
+                                    },
+                    },
+                    InvalidPropValueTestCase{
+                            .name = "float_normal",
+                            .value =
+                                    {
+                                            .prop = floatProp,
+                                            .value.floatValues = {0.0},
+                                    },
+                            .valid = true,
+                    },
+                    InvalidPropValueTestCase{
+                            .name = "float_no_value",
+                            .value =
+                                    {
+                                            .prop = floatProp,
+                                    },
+                    },
+                    InvalidPropValueTestCase{
+                            .name = "float_more_than_one_value",
+                            .value =
+                                    {
+                                            .prop = floatProp,
+                                            .value.floatValues = {0.0, 1.0},
+                                    },
+                    },
+                    InvalidPropValueTestCase{
+                            .name = "float_vec_normal",
+                            .value =
+                                    {
+                                            .prop = floatVecProp,
+                                            .value.floatValues = {0.0, 1.0},
+                                    },
+                            .valid = true,
+                    },
+                    InvalidPropValueTestCase{
+                            .name = "float_vec_no_value",
+                            .value =
+                                    {
+                                            .prop = floatVecProp,
+                                    },
+                    },
+                    InvalidPropValueTestCase{
+                            .name = "mixed_normal",
+                            .value =
+                                    {
+                                            .prop = kMixedTypePropertyForTest,
+                                            // Expect 3 values.
+                                            .value.int32Values = {0, 1, 2},
+                                            // Expect 2 values.
+                                            .value.int64Values = {0, 1},
+                                            // Expect 2 values.
+                                            .value.floatValues = {0.0, 1.0},
+                                            // Expect 1 value.
+                                            .value.byteValues = {static_cast<uint8_t>(0)},
+                                    },
+                            .config =
+                                    {
+                                            .prop = kMixedTypePropertyForTest,
+                                            .configArray = {0, 1, 1, 1, 1, 1, 1, 1, 1},
+                                    },
+                            .valid = true,
+                    },
+                    InvalidPropValueTestCase{
+                            .name = "mixed_mismatch_int32_values_count",
+                            .value =
+                                    {
+                                            .prop = kMixedTypePropertyForTest,
+                                            // Expect 3 values.
+                                            .value.int32Values = {0, 1},
+                                            // Expect 2 values.
+                                            .value.int64Values = {0, 1},
+                                            // Expect 2 values.
+                                            .value.floatValues = {0.0, 1.0},
+                                            // Expect 1 value.
+                                            .value.byteValues = {static_cast<uint8_t>(0)},
+                                    },
+                            .config =
+                                    {
+                                            .prop = kMixedTypePropertyForTest,
+                                            .configArray = {0, 1, 1, 1, 1, 1, 1, 1, 1},
+                                    },
+                    },
+                    InvalidPropValueTestCase{
+                            .name = "mixed_mismatch_int64_values_count",
+                            .value =
+                                    {
+                                            .prop = kMixedTypePropertyForTest,
+                                            // Expect 3 values.
+                                            .value.int32Values = {0, 1, 2},
+                                            // Expect 2 values.
+                                            .value.int64Values = {0},
+                                            // Expect 2 values.
+                                            .value.floatValues = {0.0, 1.0},
+                                            // Expect 1 value.
+                                            .value.byteValues = {static_cast<uint8_t>(0)},
+                                    },
+                            .config =
+                                    {
+                                            .prop = kMixedTypePropertyForTest,
+                                            .configArray = {0, 1, 1, 1, 1, 1, 1, 1, 1},
+                                    },
+                    },
+                    InvalidPropValueTestCase{
+                            .name = "mixed_mismatch_float_values_count",
+                            .value =
+                                    {
+                                            .prop = kMixedTypePropertyForTest,
+                                            // Expect 3 values.
+                                            .value.int32Values = {0, 1, 2},
+                                            // Expect 2 values.
+                                            .value.int64Values = {0, 1},
+                                            // Expect 2 values.
+                                            .value.floatValues = {0.0},
+                                            // Expect 1 value.
+                                            .value.byteValues = {static_cast<uint8_t>(0)},
+                                    },
+                            .config =
+                                    {
+                                            .prop = kMixedTypePropertyForTest,
+                                            .configArray = {0, 1, 1, 1, 1, 1, 1, 1, 1},
+                                    },
+                    },
+                    InvalidPropValueTestCase{
+                            .name = "mixed_mismatch_byte_values_count",
+                            .value =
+                                    {
+                                            .prop = kMixedTypePropertyForTest,
+                                            // Expect 3 values.
+                                            .value.int32Values = {0, 1, 2},
+                                            // Expect 2 values.
+                                            .value.int64Values = {0, 1},
+                                            // Expect 2 values.
+                                            .value.floatValues = {0.0, 1.0},
+                                            // Expect 1 value.
+                                            .value.byteValues = {static_cast<uint8_t>(0),
+                                                                 static_cast<uint8_t>(1)},
+                                    },
+                            .config =
+                                    {
+                                            .prop = kMixedTypePropertyForTest,
+                                            .configArray = {0, 1, 1, 1, 1, 1, 1, 1, 1},
+                                    },
+                    },
+            });
+}
+
+struct InvalidValueRangeTestCase {
+    std::string name;
+    VehiclePropValue value;
+    bool valid = false;
+    VehicleAreaConfig config;
+};
+
+std::vector<InvalidValueRangeTestCase> getInvalidValueRangeTestCases() {
+    return std::vector<InvalidValueRangeTestCase>({{
+            InvalidValueRangeTestCase{
+                    .name = "int32_normal",
+                    .value =
+                            {
+                                    .prop = int32Prop,
+                                    .value.int32Values = {0},
+                            },
+                    .valid = true,
+                    .config =
+                            {
+                                    .minInt32Value = 0,
+                                    .maxInt32Value = 10,
+                            },
+            },
+            InvalidValueRangeTestCase{
+                    .name = "int32_vec_normal",
+                    .value =
+                            {
+                                    .prop = int32VecProp,
+                                    .value.int32Values = {0, 1},
+                            },
+                    .valid = true,
+                    .config =
+                            {
+                                    .minInt32Value = 0,
+                                    .maxInt32Value = 10,
+                            },
+            },
+            InvalidValueRangeTestCase{
+                    .name = "int32_vec_underflow",
+                    .value =
+                            {
+                                    .prop = int32VecProp,
+                                    .value.int32Values = {-1, 1},
+                            },
+
+                    .config =
+                            {
+                                    .minInt32Value = 0,
+                                    .maxInt32Value = 10,
+                            },
+            },
+            InvalidValueRangeTestCase{
+                    .name = "int32_vec_overflow",
+                    .value =
+                            {
+                                    .prop = int32VecProp,
+                                    .value.int32Values = {0, 100},
+                            },
+                    .config =
+                            {
+                                    .minInt32Value = 0,
+                                    .maxInt32Value = 10,
+                            },
+            },
+            InvalidValueRangeTestCase{
+                    .name = "int64_normal",
+                    .value =
+                            {
+                                    .prop = int64Prop,
+                                    .value.int64Values = {0},
+                            },
+                    .valid = true,
+                    .config =
+                            {
+                                    .minInt64Value = 0,
+                                    .maxInt64Value = 10,
+                            },
+            },
+            InvalidValueRangeTestCase{
+                    .name = "int64_vec_normal",
+                    .value =
+                            {
+                                    .prop = int64VecProp,
+                                    .value.int64Values = {0, 1},
+                            },
+                    .valid = true,
+                    .config =
+                            {
+                                    .minInt64Value = 0,
+                                    .maxInt64Value = 10,
+                            },
+            },
+            InvalidValueRangeTestCase{
+                    .name = "int64_vec_underflow",
+                    .value =
+                            {
+                                    .prop = int64VecProp,
+                                    .value.int64Values = {-1, 1},
+                            },
+
+                    .config =
+                            {
+                                    .minInt64Value = 0,
+                                    .maxInt64Value = 10,
+                            },
+            },
+            InvalidValueRangeTestCase{
+                    .name = "int64_vec_overflow",
+                    .value =
+                            {
+                                    .prop = int64VecProp,
+                                    .value.int64Values = {0, 100},
+                            },
+                    .config =
+                            {
+                                    .minInt64Value = 0,
+                                    .maxInt64Value = 10,
+                            },
+            },
+            InvalidValueRangeTestCase{
+                    .name = "float_normal",
+                    .value =
+                            {
+                                    .prop = floatProp,
+                                    .value.floatValues = {0.0},
+                            },
+                    .valid = true,
+                    .config =
+                            {
+                                    .minFloatValue = 0.0,
+                                    .maxFloatValue = 10.0,
+                            },
+            },
+            InvalidValueRangeTestCase{
+                    .name = "float_vec_normal",
+                    .value =
+                            {
+                                    .prop = floatVecProp,
+                                    .value.floatValues = {0.0, 10.0},
+                            },
+                    .valid = true,
+                    .config =
+                            {
+                                    .minFloatValue = 0.0,
+                                    .maxFloatValue = 10.0,
+                            },
+            },
+            InvalidValueRangeTestCase{
+                    .name = "float_vec_underflow",
+                    .value =
+                            {
+                                    .prop = floatVecProp,
+                                    .value.floatValues = {-0.1, 1.1},
+                            },
+
+                    .config =
+                            {
+                                    .minFloatValue = 0.0,
+                                    .maxFloatValue = 10.0,
+                            },
+            },
+            InvalidValueRangeTestCase{
+                    .name = "float_vec_overflow",
+                    .value =
+                            {
+                                    .prop = floatVecProp,
+                                    .value.floatValues = {0.0, 10.1},
+                            },
+                    .config =
+                            {
+                                    .minFloatValue = 0.0,
+                                    .maxFloatValue = 10.0,
+                            },
+            },
+    }});
+}
+
+}  // namespace
+
 TEST(VehicleUtilsTest, testToInt) {
     int areaGlobal = toInt(VehicleArea::GLOBAL);
 
@@ -335,6 +759,40 @@
     t.join();
 }
 
+class InvalidPropValueTest : public testing::TestWithParam<InvalidPropValueTestCase> {};
+
+INSTANTIATE_TEST_SUITE_P(InvalidPropValueTests, InvalidPropValueTest,
+                         testing::ValuesIn(getInvalidPropValuesTestCases()),
+                         [](const testing::TestParamInfo<InvalidPropValueTest::ParamType>& info) {
+                             return info.param.name;
+                         });
+
+TEST_P(InvalidPropValueTest, testCheckPropValue) {
+    InvalidPropValueTestCase tc = GetParam();
+
+    // Config is not used for non-mixed types.
+    auto result = checkPropValue(tc.value, &tc.config);
+
+    ASSERT_EQ(tc.valid, result.ok());
+}
+
+class InvalidValueRangeTest : public testing::TestWithParam<InvalidValueRangeTestCase> {};
+
+INSTANTIATE_TEST_SUITE_P(InvalidValueRangeTests, InvalidValueRangeTest,
+                         testing::ValuesIn(getInvalidValueRangeTestCases()),
+                         [](const testing::TestParamInfo<InvalidValueRangeTest::ParamType>& info) {
+                             return info.param.name;
+                         });
+
+TEST_P(InvalidValueRangeTest, testCheckValueRange) {
+    InvalidValueRangeTestCase tc = GetParam();
+
+    // Config is not used for non-mixed types.
+    auto result = checkValueRange(tc.value, &tc.config);
+
+    ASSERT_EQ(tc.valid, result.ok());
+}
+
 }  // namespace vehicle
 }  // namespace automotive
 }  // namespace hardware
diff --git a/automotive/vehicle/aidl/impl/vhal/Android.bp b/automotive/vehicle/aidl/impl/vhal/Android.bp
index 454fea5..0132e6f 100644
--- a/automotive/vehicle/aidl/impl/vhal/Android.bp
+++ b/automotive/vehicle/aidl/impl/vhal/Android.bp
@@ -56,6 +56,9 @@
     srcs: [
         "src/ConnectedClient.cpp",
         "src/DefaultVehicleHal.cpp",
+        "src/PendingRequestPool.cpp",
+        "src/RecurrentTimer.cpp",
+        "src/SubscriptionManager.cpp",
     ],
     static_libs: [
         "VehicleHalUtils",
diff --git a/automotive/vehicle/aidl/impl/vhal/include/ConnectedClient.h b/automotive/vehicle/aidl/impl/vhal/include/ConnectedClient.h
index 43a9603..d8516b1 100644
--- a/automotive/vehicle/aidl/impl/vhal/include/ConnectedClient.h
+++ b/automotive/vehicle/aidl/impl/vhal/include/ConnectedClient.h
@@ -17,6 +17,8 @@
 #ifndef android_hardware_automotive_vehicle_aidl_impl_vhal_include_ConnectedClient_H_
 #define android_hardware_automotive_vehicle_aidl_impl_vhal_include_ConnectedClient_H_
 
+#include "PendingRequestPool.h"
+
 #include <VehicleHalTypes.h>
 
 #include <aidl/android/hardware/automotive/vehicle/IVehicleCallback.h>
@@ -40,12 +42,31 @@
 class ConnectedClient {
   public:
     ConnectedClient(
+            std::shared_ptr<PendingRequestPool> requestPool,
             std::shared_ptr<::aidl::android::hardware::automotive::vehicle::IVehicleCallback>
                     callback);
 
     virtual ~ConnectedClient() = default;
 
+    // Gets the unique ID for this client.
+    const void* id();
+
+    // Add client requests. The requests would be registered as pending requests until
+    // {@code tryFinishRequests} is called for them.
+    // Returns {@code INVALID_ARG} error if any of the requestIds are duplicate with one of the
+    // pending request IDs or {@code TRY_AGAIN} error if the pending request pool is full and could
+    // no longer add requests.
+    ::android::base::Result<void> addRequests(const std::unordered_set<int64_t>& requestIds);
+
+    // Mark the requests as finished. Returns a list of request IDs that was pending and has been
+    // finished. It must be a set of the requested request IDs.
+    std::unordered_set<int64_t> tryFinishRequests(const std::unordered_set<int64_t>& requestIds);
+
   protected:
+    // Gets the callback to be called when the request for this client has timeout.
+    virtual std::shared_ptr<const PendingRequestPool::TimeoutCallbackFunc> getTimeoutCallback() = 0;
+
+    const std::shared_ptr<PendingRequestPool> mRequestPool;
     const std::shared_ptr<::aidl::android::hardware::automotive::vehicle::IVehicleCallback>
             mCallback;
 };
@@ -56,6 +77,7 @@
 class GetSetValuesClient final : public ConnectedClient {
   public:
     GetSetValuesClient(
+            std::shared_ptr<PendingRequestPool> requestPool,
             std::shared_ptr<::aidl::android::hardware::automotive::vehicle::IVehicleCallback>
                     callback);
 
@@ -69,11 +91,48 @@
     // Gets the callback to be called when the request for this client has finished.
     std::shared_ptr<const std::function<void(std::vector<ResultType>)>> getResultCallback();
 
+  protected:
+    // Gets the callback to be called when the request for this client has timeout.
+    std::shared_ptr<const PendingRequestPool::TimeoutCallbackFunc> getTimeoutCallback() override;
+
   private:
     // The following members are only initialized during construction.
+    std::shared_ptr<const PendingRequestPool::TimeoutCallbackFunc> mTimeoutCallback;
     std::shared_ptr<const std::function<void(std::vector<ResultType>)>> mResultCallback;
 };
 
+// A class to represent a client that calls {@code IVehicle.subscribe}.
+class SubscriptionClient final : public ConnectedClient {
+  public:
+    SubscriptionClient(
+            std::shared_ptr<PendingRequestPool> requestPool,
+            std::shared_ptr<::aidl::android::hardware::automotive::vehicle::IVehicleCallback>
+                    callback);
+
+    // Gets the callback to be called when the request for this client has finished.
+    std::shared_ptr<const std::function<
+            void(std::vector<::aidl::android::hardware::automotive::vehicle::GetValueResult>)>>
+    getResultCallback();
+
+  protected:
+    // Gets the callback to be called when the request for this client has timeout.
+    std::shared_ptr<const PendingRequestPool::TimeoutCallbackFunc> getTimeoutCallback() override;
+
+  private:
+    // The following members are only initialized during construction.
+    std::shared_ptr<const PendingRequestPool::TimeoutCallbackFunc> mTimeoutCallback;
+    std::shared_ptr<const std::function<void(
+            std::vector<::aidl::android::hardware::automotive::vehicle::GetValueResult>)>>
+            mResultCallback;
+
+    static void onGetValueResults(
+            const void* clientId,
+            std::shared_ptr<::aidl::android::hardware::automotive::vehicle::IVehicleCallback>
+                    callback,
+            std::shared_ptr<PendingRequestPool> requestPool,
+            std::vector<::aidl::android::hardware::automotive::vehicle::GetValueResult> results);
+};
+
 }  // namespace vehicle
 }  // namespace automotive
 }  // namespace hardware
diff --git a/automotive/vehicle/aidl/impl/vhal/include/DefaultVehicleHal.h b/automotive/vehicle/aidl/impl/vhal/include/DefaultVehicleHal.h
index 43bdca2..b0423a3 100644
--- a/automotive/vehicle/aidl/impl/vhal/include/DefaultVehicleHal.h
+++ b/automotive/vehicle/aidl/impl/vhal/include/DefaultVehicleHal.h
@@ -17,13 +17,20 @@
 #ifndef android_hardware_automotive_vehicle_aidl_impl_vhal_include_DefaultVehicleHal_H_
 #define android_hardware_automotive_vehicle_aidl_impl_vhal_include_DefaultVehicleHal_H_
 
+#include "ConnectedClient.h"
+#include "ParcelableUtils.h"
+#include "PendingRequestPool.h"
+#include "SubscriptionManager.h"
+
 #include <IVehicleHardware.h>
-#include <LargeParcelableBase.h>
 #include <VehicleUtils.h>
 #include <aidl/android/hardware/automotive/vehicle/BnVehicle.h>
+#include <android-base/expected.h>
+#include <android-base/thread_annotations.h>
 #include <android/binder_auto_utils.h>
 
 #include <memory>
+#include <mutex>
 #include <unordered_map>
 #include <vector>
 
@@ -37,59 +44,26 @@
 
 constexpr int INVALID_MEMORY_FD = -1;
 
-template <class T>
-::ndk::ScopedAStatus toScopedAStatus(
-        const ::android::base::Result<T>& result,
-        ::aidl::android::hardware::automotive::vehicle::StatusCode status) {
-    if (result.ok()) {
-        return ::ndk::ScopedAStatus::ok();
-    }
-    return ::ndk::ScopedAStatus::fromServiceSpecificErrorWithMessage(toInt(status),
-                                                                     getErrorMsg(result).c_str());
-}
-
-template <class T>
-::ndk::ScopedAStatus toScopedAStatus(const ::android::base::Result<T>& result) {
-    return toScopedAStatus(result, getErrorCode(result));
-}
-
-template <class T1, class T2>
-::ndk::ScopedAStatus vectorToStableLargeParcelable(std::vector<T1>& values, T2* output) {
-    auto result = ::android::automotive::car_binder_lib::LargeParcelableBase::
-            parcelableVectorToStableLargeParcelable(values);
-    if (!result.ok()) {
-        return toScopedAStatus(
-                result, ::aidl::android::hardware::automotive::vehicle::StatusCode::INTERNAL_ERROR);
-    }
-    auto& fd = result.value();
-    if (fd == nullptr) {
-        output->payloads = values;
-    } else {
-        // Move the returned ScopedFileDescriptor pointer to ScopedFileDescriptor value in
-        // 'sharedMemoryFd' field.
-        output->sharedMemoryFd.set(fd->get());
-        *(fd->getR()) = INVALID_MEMORY_FD;
-    }
-    return ::ndk::ScopedAStatus::ok();
-}
-
 }  // namespace defaultvehiclehal_impl
 
 class DefaultVehicleHal final : public ::aidl::android::hardware::automotive::vehicle::BnVehicle {
   public:
+    using CallbackType =
+            std::shared_ptr<::aidl::android::hardware::automotive::vehicle::IVehicleCallback>;
+
     explicit DefaultVehicleHal(std::unique_ptr<IVehicleHardware> hardware);
 
+    ~DefaultVehicleHal();
+
     ::ndk::ScopedAStatus getAllPropConfigs(
             ::aidl::android::hardware::automotive::vehicle::VehiclePropConfigs* returnConfigs)
             override;
     ::ndk::ScopedAStatus getValues(
-            const std::shared_ptr<::aidl::android::hardware::automotive::vehicle::IVehicleCallback>&
-                    callback,
+            const CallbackType& callback,
             const ::aidl::android::hardware::automotive::vehicle::GetValueRequests& requests)
             override;
     ::ndk::ScopedAStatus setValues(
-            const std::shared_ptr<::aidl::android::hardware::automotive::vehicle::IVehicleCallback>&
-                    callback,
+            const CallbackType& callback,
             const ::aidl::android::hardware::automotive::vehicle::SetValueRequests& requests)
             override;
     ::ndk::ScopedAStatus getPropConfigs(
@@ -97,27 +71,78 @@
             ::aidl::android::hardware::automotive::vehicle::VehiclePropConfigs* returnConfigs)
             override;
     ::ndk::ScopedAStatus subscribe(
-            const std::shared_ptr<::aidl::android::hardware::automotive::vehicle::IVehicleCallback>&
-                    callback,
+            const CallbackType& callback,
             const std::vector<::aidl::android::hardware::automotive::vehicle::SubscribeOptions>&
                     options,
             int32_t maxSharedMemoryFileCount) override;
-    ::ndk::ScopedAStatus unsubscribe(
-            const std::shared_ptr<::aidl::android::hardware::automotive::vehicle::IVehicleCallback>&
-                    callback,
-            const std::vector<int32_t>& propIds) override;
-    ::ndk::ScopedAStatus returnSharedMemory(
-            const std::shared_ptr<::aidl::android::hardware::automotive::vehicle::IVehicleCallback>&
-                    callback,
-            int64_t sharedMemoryId) override;
+    ::ndk::ScopedAStatus unsubscribe(const CallbackType& callback,
+                                     const std::vector<int32_t>& propIds) override;
+    ::ndk::ScopedAStatus returnSharedMemory(const CallbackType& callback,
+                                            int64_t sharedMemoryId) override;
 
     IVehicleHardware* getHardware();
 
   private:
+    // friend class for unit testing.
+    friend class DefaultVehicleHalTest;
+
+    using GetValuesClient =
+            GetSetValuesClient<::aidl::android::hardware::automotive::vehicle::GetValueResult,
+                               ::aidl::android::hardware::automotive::vehicle::GetValueResults>;
+    using SetValuesClient =
+            GetSetValuesClient<::aidl::android::hardware::automotive::vehicle::SetValueResult,
+                               ::aidl::android::hardware::automotive::vehicle::SetValueResults>;
+
+    // The default timeout of get or set value requests is 30s.
+    // TODO(b/214605968): define TIMEOUT_IN_NANO in IVehicle and allow getValues/setValues/subscribe
+    // to specify custom timeouts.
+    static constexpr int64_t TIMEOUT_IN_NANO = 30'000'000'000;
     const std::unique_ptr<IVehicleHardware> mVehicleHardware;
+
+    // mConfigsByPropId and mConfigFile are only modified during initialization, so no need to
+    // lock guard them.
     std::unordered_map<int32_t, ::aidl::android::hardware::automotive::vehicle::VehiclePropConfig>
             mConfigsByPropId;
+    // Only modified in constructor, so thread-safe.
     std::unique_ptr<::ndk::ScopedFileDescriptor> mConfigFile;
+    // PendingRequestPool is thread-safe.
+    std::shared_ptr<PendingRequestPool> mPendingRequestPool;
+    // SubscriptionManager is thread-safe.
+    std::unique_ptr<SubscriptionManager> mSubscriptionManager;
+
+    std::mutex mLock;
+    std::unordered_map<CallbackType, std::shared_ptr<GetValuesClient>> mGetValuesClients
+            GUARDED_BY(mLock);
+    std::unordered_map<CallbackType, std::shared_ptr<SetValuesClient>> mSetValuesClients
+            GUARDED_BY(mLock);
+    std::unordered_map<CallbackType, std::shared_ptr<SubscriptionClient>> mSubscriptionClients
+            GUARDED_BY(mLock);
+    // An increasing request ID we keep for subscribe clients.
+    std::unordered_map<CallbackType, int64_t> mSubscribeIdByClient GUARDED_BY(mLock);
+
+    template <class T>
+    std::shared_ptr<T> getOrCreateClient(
+            std::unordered_map<CallbackType, std::shared_ptr<T>>* clients,
+            const CallbackType& callback) REQUIRES(mLock);
+
+    ::android::base::Result<void> checkProperty(
+            const ::aidl::android::hardware::automotive::vehicle::VehiclePropValue& propValue);
+
+    ::android::base::Result<std::vector<int64_t>> checkDuplicateRequests(
+            const std::vector<::aidl::android::hardware::automotive::vehicle::GetValueRequest>&
+                    requests);
+
+    ::android::base::Result<std::vector<int64_t>> checkDuplicateRequests(
+            const std::vector<::aidl::android::hardware::automotive::vehicle::SetValueRequest>&
+                    requests);
+
+    void getValueFromHardwareCallCallback(
+            const CallbackType& callback,
+            const ::aidl::android::hardware::automotive::vehicle::VehiclePropValue& value);
+
+    // Test-only
+    // Set the default timeout for pending requests.
+    void setTimeout(int64_t timeoutInNano);
 };
 
 }  // namespace vehicle
diff --git a/automotive/vehicle/aidl/impl/vhal/include/ParcelableUtils.h b/automotive/vehicle/aidl/impl/vhal/include/ParcelableUtils.h
index dcb15b9..4b7c2f3 100644
--- a/automotive/vehicle/aidl/impl/vhal/include/ParcelableUtils.h
+++ b/automotive/vehicle/aidl/impl/vhal/include/ParcelableUtils.h
@@ -31,19 +31,18 @@
 
 template <class T1, class T2>
 ::ndk::ScopedAStatus vectorToStableLargeParcelable(std::vector<T1>&& values, T2* output) {
+    output->payloads = std::move(values);
     auto result = ::android::automotive::car_binder_lib::LargeParcelableBase::
-            parcelableVectorToStableLargeParcelable(values);
+            parcelableToStableLargeParcelable(*output);
     if (!result.ok()) {
         return toScopedAStatus(
                 result, ::aidl::android::hardware::automotive::vehicle::StatusCode::INTERNAL_ERROR);
     }
     auto& fd = result.value();
-    if (fd == nullptr) {
-        // If we no longer needs values, move it inside the payloads to avoid copying.
-        output->payloads = std::move(values);
-    } else {
+    if (fd != nullptr) {
         // Move the returned ScopedFileDescriptor pointer to ScopedFileDescriptor value in
         // 'sharedMemoryFd' field.
+        output->payloads.clear();
         output->sharedMemoryFd = std::move(*fd);
     }
     return ::ndk::ScopedAStatus::ok();
@@ -57,12 +56,13 @@
     return vectorToStableLargeParcelable(std::move(valuesCopy), output);
 }
 
-template <class T1, class T2>
-::android::base::expected<std::vector<T1>, ::ndk::ScopedAStatus> stableLargeParcelableToVector(
-        const T2& largeParcelable) {
-    ::android::base::Result<std::optional<std::vector<T1>>> result =
-            ::android::automotive::car_binder_lib::LargeParcelableBase::
-                    stableLargeParcelableToParcelableVector<T1>(largeParcelable.sharedMemoryFd);
+template <class T>
+::android::base::expected<
+        ::android::automotive::car_binder_lib::LargeParcelableBase::BorrowedOwnedObject<T>,
+        ::ndk::ScopedAStatus>
+fromStableLargeParcelable(const T& largeParcelable) {
+    auto result = ::android::automotive::car_binder_lib::LargeParcelableBase::
+            stableLargeParcelableToParcelable(largeParcelable);
 
     if (!result.ok()) {
         return ::android::base::unexpected(toScopedAStatus(
@@ -70,15 +70,7 @@
                 "failed to parse large parcelable"));
     }
 
-    if (!result.value().has_value()) {
-        return ::android::base::unexpected(
-                ::ndk::ScopedAStatus::fromServiceSpecificErrorWithMessage(
-                        toInt(::aidl::android::hardware::automotive::vehicle::StatusCode::
-                                      INVALID_ARG),
-                        "empty request"));
-    }
-
-    return std::move(result.value().value());
+    return std::move(result.value());
 }
 
 }  // namespace vehicle
diff --git a/automotive/vehicle/aidl/impl/vhal/include/PendingRequestPool.h b/automotive/vehicle/aidl/impl/vhal/include/PendingRequestPool.h
new file mode 100644
index 0000000..efb3315
--- /dev/null
+++ b/automotive/vehicle/aidl/impl/vhal/include/PendingRequestPool.h
@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef android_hardware_automotive_vehicle_aidl_impl_vhal_include_PendingRequestPool_H_
+#define android_hardware_automotive_vehicle_aidl_impl_vhal_include_PendingRequestPool_H_
+
+#include <android-base/result.h>
+#include <android-base/thread_annotations.h>
+
+#include <atomic>
+#include <list>
+#include <mutex>
+#include <thread>
+#include <unordered_map>
+#include <unordered_set>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace vehicle {
+
+// A thread-safe pending request pool that tracks whether each request has timed-out.
+class PendingRequestPool final {
+  public:
+    using TimeoutCallbackFunc = std::function<void(const std::unordered_set<int64_t>&)>;
+
+    explicit PendingRequestPool(int64_t timeoutInSec);
+
+    ~PendingRequestPool();
+
+    // Adds a list of requests to the request pool.
+    // The clientId is the key for all the requests. It could be a number or an address to a data
+    // structure that represents a client. The caller must maintain this data structure.
+    // All the request IDs must be unique for one client, if any of the requestIds is duplicate with
+    // any pending request IDs for the client, this function returns error and no requests would be
+    // added. Otherwise, they would be added to the request pool.
+    // The callback would be called if requests are not finished within {@code mTimeoutInNano}
+    // seconds.
+    android::base::Result<void> addRequests(const void* clientId,
+                                            const std::unordered_set<int64_t>& requestIds,
+                                            std::shared_ptr<const TimeoutCallbackFunc> callback);
+
+    // Checks whether the request is currently pending.
+    bool isRequestPending(const void* clientId, int64_t requestId) const;
+
+    // Tries to mark the requests as finished and remove them from the pool if the request is
+    // currently pending. Returns the list of request that is pending and has been finished
+    // successfully. This function would try to finish any valid requestIds even though some of the
+    // requestIds are not valid.
+    std::unordered_set<int64_t> tryFinishRequests(const void* clientId,
+                                                  const std::unordered_set<int64_t>& requestIds);
+
+    // Returns how many pending requests in the pool, for testing purpose.
+    size_t countPendingRequests(const void* clientId) const;
+
+    size_t countPendingRequests() const;
+
+  private:
+    // The maximum number of pending requests allowed per client. If exceeds this number, adding
+    // more requests would fail. This is to prevent spamming from client.
+    static constexpr size_t MAX_PENDING_REQUEST_PER_CLIENT = 10000;
+
+    struct PendingRequest {
+        std::unordered_set<int64_t> requestIds;
+        int64_t timeoutTimestamp;
+        std::shared_ptr<const TimeoutCallbackFunc> callback;
+    };
+
+    int64_t mTimeoutInNano;
+    mutable std::mutex mLock;
+    std::unordered_map<const void*, std::list<PendingRequest>> mPendingRequestsByClient
+            GUARDED_BY(mLock);
+    std::thread mThread;
+    std::atomic<bool> mThreadStop = false;
+    std::condition_variable mCv;
+    std::mutex mCvLock;
+
+    bool isRequestPendingLocked(const void* clientId, int64_t requestId) const REQUIRES(mLock);
+
+    // Checks whether the requests in the pool has timed-out, run periodically in a separate thread.
+    void checkTimeout();
+};
+
+}  // namespace vehicle
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
+
+#endif  // android_hardware_automotive_vehicle_aidl_impl_vhal_include_PendingRequestPool_H_
diff --git a/automotive/vehicle/aidl/impl/vhal/include/RecurrentTimer.h b/automotive/vehicle/aidl/impl/vhal/include/RecurrentTimer.h
new file mode 100644
index 0000000..5f0f716
--- /dev/null
+++ b/automotive/vehicle/aidl/impl/vhal/include/RecurrentTimer.h
@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef android_hardware_automotive_vehicle_aidl_impl_vhal_include_RecurrentTimer_H_
+#define android_hardware_automotive_vehicle_aidl_impl_vhal_include_RecurrentTimer_H_
+
+#include <android-base/thread_annotations.h>
+
+#include <memory>
+#include <mutex>
+#include <queue>
+#include <thread>
+#include <unordered_map>
+#include <vector>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace vehicle {
+
+// A thread-safe recurrent timer.
+class RecurrentTimer final {
+  public:
+    // The class for the function that would be called recurrently.
+    using Callback = std::function<void()>;
+
+    RecurrentTimer();
+
+    ~RecurrentTimer();
+
+    // Registers a recurrent callback for a given interval.
+    // Registering the same callback twice will override the interval provided before.
+    void registerTimerCallback(int64_t intervalInNano, std::shared_ptr<Callback> callback);
+
+    // Unregisters a previously registered recurrent callback.
+    void unregisterTimerCallback(std::shared_ptr<Callback> callback);
+
+  private:
+    // friend class for unit testing.
+    friend class RecurrentTimerTest;
+
+    struct CallbackInfo {
+        std::shared_ptr<Callback> callback;
+        int64_t interval;
+        int64_t nextTime;
+        // A flag to indicate whether this CallbackInfo is already outdated and should be ignored.
+        // The reason we need this flag is because we cannot easily remove an element from a heap.
+        bool outdated = false;
+
+        static bool cmp(const std::unique_ptr<CallbackInfo>& lhs,
+                        const std::unique_ptr<CallbackInfo>& rhs);
+    };
+
+    std::mutex mLock;
+    std::thread mThread;
+    std::condition_variable mCond;
+    bool mStopRequested GUARDED_BY(mLock) = false;
+    // A map to map each callback to its current active CallbackInfo in the mCallbackQueue.
+    std::unordered_map<std::shared_ptr<Callback>, CallbackInfo*> mCallbacks GUARDED_BY(mLock);
+    // A min-heap sorted by nextTime. Note that because we cannot remove arbitrary element from the
+    // heap, a single Callback can have multiple entries in this queue, all but one should be valid.
+    // The rest should be mark as outdated. The valid one is one stored in mCallbacks.
+    std::vector<std::unique_ptr<CallbackInfo>> mCallbackQueue GUARDED_BY(mLock);
+
+    void loop();
+
+    // Mark the callbackInfo as outdated and should be ignored when popped from the heap.
+    void markOutdatedLocked(CallbackInfo* callback) REQUIRES(mLock);
+    // Remove all outdated callbackInfos from the top of the heap. This function must be called
+    // each time we might introduce outdated elements to the top. We must make sure the heap is
+    // always valid from the top.
+    void removeInvalidCallbackLocked() REQUIRES(mLock);
+    // Pops the next closest callback (must be valid) from the heap.
+    std::unique_ptr<CallbackInfo> popNextCallbackLocked() REQUIRES(mLock);
+};
+
+}  // namespace vehicle
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
+
+#endif  // android_hardware_automotive_vehicle_aidl_impl_vhal_include_RecurrentTimer_H_
diff --git a/automotive/vehicle/aidl/impl/vhal/include/SubscriptionManager.h b/automotive/vehicle/aidl/impl/vhal/include/SubscriptionManager.h
new file mode 100644
index 0000000..28809c6
--- /dev/null
+++ b/automotive/vehicle/aidl/impl/vhal/include/SubscriptionManager.h
@@ -0,0 +1,151 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef android_hardware_automotive_vehicle_aidl_impl_vhal_include_SubscriptionManager_H_
+#define android_hardware_automotive_vehicle_aidl_impl_vhal_include_SubscriptionManager_H_
+
+#include "RecurrentTimer.h"
+
+#include <VehicleHalTypes.h>
+
+#include <aidl/android/hardware/automotive/vehicle/IVehicleCallback.h>
+#include <android-base/result.h>
+#include <android-base/thread_annotations.h>
+
+#include <mutex>
+#include <unordered_map>
+#include <unordered_set>
+#include <vector>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace vehicle {
+
+// A thread-safe subscription manager that manages all VHAL subscriptions.
+class SubscriptionManager final {
+  public:
+    using CallbackType =
+            std::shared_ptr<::aidl::android::hardware::automotive::vehicle::IVehicleCallback>;
+    using GetValueFunc = std::function<void(
+            const CallbackType& callback,
+            const ::aidl::android::hardware::automotive::vehicle::VehiclePropValue& value)>;
+
+    explicit SubscriptionManager(GetValueFunc&& action);
+    ~SubscriptionManager();
+
+    // Subscribes to properties according to {@code SubscribeOptions}. Note that all option must
+    // contain non-empty areaIds field, which contains all area IDs to subscribe. As a result,
+    // the options here is different from the options passed from VHAL client.
+    // Returns error if any of the subscribe options is not valid. If error is returned, no
+    // properties would be subscribed.
+    // Returns ok if all the options are parsed correctly and all the properties are subscribed.
+    ::android::base::Result<void> subscribe(
+            const CallbackType& callback,
+            const std::vector<::aidl::android::hardware::automotive::vehicle::SubscribeOptions>&
+                    options,
+            bool isContinuousProperty);
+
+    // Unsubscribes from the properties for the callback.
+    // Returns error if the callback was not subscribed before or one of the given property was not
+    // subscribed. If error is returned, no property would be unsubscribed.
+    // Returns ok if all the requested properties for the callback are unsubscribed.
+    ::android::base::Result<void> unsubscribe(const CallbackType& callback,
+                                              const std::vector<int32_t>& propIds);
+
+    // Unsubscribes to all the properties for the callback.
+    // Returns error if the callback was not subscribed before. If error is returned, no property
+    // would be unsubscribed.
+    // Returns ok if all the properties for the callback are unsubscribed.
+    ::android::base::Result<void> unsubscribe(const CallbackType& callback);
+
+    // For a list of updated properties, returns a map that maps clients subscribing to
+    // the updated properties to a list of updated values. This would only return on-change property
+    // clients that should be informed for the given updated values.
+    std::unordered_map<
+            std::shared_ptr<::aidl::android::hardware::automotive::vehicle::IVehicleCallback>,
+            std::vector<const ::aidl::android::hardware::automotive::vehicle::VehiclePropValue*>>
+    getSubscribedClients(
+            const std::vector<::aidl::android::hardware::automotive::vehicle::VehiclePropValue>&
+                    updatedValues);
+
+    // Checks whether the sample rate is valid.
+    static bool checkSampleRate(float sampleRate);
+
+  private:
+    struct PropIdAreaId {
+        int32_t propId;
+        int32_t areaId;
+
+        bool operator==(const PropIdAreaId& other) const;
+    };
+
+    struct PropIdAreaIdHash {
+        size_t operator()(const PropIdAreaId& propIdAreaId) const;
+    };
+
+    // A class to represent a registered subscription.
+    class Subscription {
+      public:
+        Subscription() = default;
+
+        Subscription(const Subscription&) = delete;
+
+        virtual ~Subscription() = default;
+
+        virtual bool isOnChange();
+    };
+
+    // A subscription for OnContinuous property. The registered action would be called recurrently
+    // until this class is destructed.
+    class RecurrentSubscription final : public Subscription {
+      public:
+        explicit RecurrentSubscription(std::shared_ptr<RecurrentTimer> timer,
+                                       std::function<void()>&& action, int64_t interval);
+        ~RecurrentSubscription();
+
+        bool isOnChange() override;
+
+      private:
+        std::shared_ptr<std::function<void()>> mAction;
+        std::shared_ptr<RecurrentTimer> mTimer;
+    };
+
+    // A subscription for OnChange property.
+    class OnChangeSubscription final : public Subscription {
+      public:
+        bool isOnChange() override;
+    };
+
+    mutable std::mutex mLock;
+    std::unordered_map<PropIdAreaId, std::unordered_set<CallbackType>, PropIdAreaIdHash>
+            mClientsByPropIdArea GUARDED_BY(mLock);
+    std::unordered_map<CallbackType, std::unordered_map<PropIdAreaId, std::unique_ptr<Subscription>,
+                                                        PropIdAreaIdHash>>
+            mSubscriptionsByClient GUARDED_BY(mLock);
+    // RecurrentTimer is thread-safe.
+    std::shared_ptr<RecurrentTimer> mTimer;
+    const GetValueFunc mGetValue;
+
+    static ::android::base::Result<int64_t> getInterval(float sampleRate);
+};
+
+}  // namespace vehicle
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
+
+#endif  // android_hardware_automotive_vehicle_aidl_impl_vhal_include_SubscriptionManager_H_
diff --git a/automotive/vehicle/aidl/impl/vhal/src/ConnectedClient.cpp b/automotive/vehicle/aidl/impl/vhal/src/ConnectedClient.cpp
index 656dfaf..7d02a05 100644
--- a/automotive/vehicle/aidl/impl/vhal/src/ConnectedClient.cpp
+++ b/automotive/vehicle/aidl/impl/vhal/src/ConnectedClient.cpp
@@ -102,6 +102,53 @@
     sendGetOrSetValueResultsSeparately<ResultType, ResultsType>(callback, results);
 }
 
+// The timeout callback for GetValues/SetValues.
+template <class ResultType, class ResultsType>
+void onTimeout(
+        std::shared_ptr<::aidl::android::hardware::automotive::vehicle::IVehicleCallback> callback,
+        const std::unordered_set<int64_t>& timeoutIds) {
+    std::vector<ResultType> timeoutResults;
+    for (int64_t requestId : timeoutIds) {
+        ALOGD("hardware request timeout, request ID: %" PRId64, requestId);
+        timeoutResults.push_back({
+                .requestId = requestId,
+                .status = StatusCode::TRY_AGAIN,
+        });
+    }
+    sendGetOrSetValueResults<ResultType, ResultsType>(callback, timeoutResults);
+}
+
+// The on-results callback for GetValues/SetValues.
+template <class ResultType, class ResultsType>
+void getOrSetValuesCallback(
+        const void* clientId,
+        std::shared_ptr<::aidl::android::hardware::automotive::vehicle::IVehicleCallback> callback,
+        std::vector<ResultType> results, std::shared_ptr<PendingRequestPool> requestPool) {
+    std::unordered_set<int64_t> requestIds;
+    for (const auto& result : results) {
+        requestIds.insert(result.requestId);
+    }
+
+    auto finishedRequests = requestPool->tryFinishRequests(clientId, requestIds);
+
+    auto it = results.begin();
+    while (it != results.end()) {
+        int64_t requestId = it->requestId;
+        if (finishedRequests.find(requestId) == finishedRequests.end()) {
+            ALOGD("no pending request for the result from hardware, "
+                  "possibly already time-out, ID: %" PRId64,
+                  requestId);
+            it = results.erase(it);
+        } else {
+            it++;
+        }
+    }
+
+    if (!results.empty()) {
+        sendGetOrSetValueResults<ResultType, ResultsType>(callback, results);
+    }
+}
+
 // Specify the functions for GetValues and SetValues types.
 template void sendGetOrSetValueResult<GetValueResult, GetValueResults>(
         std::shared_ptr<IVehicleCallback> callback, const GetValueResult& result);
@@ -118,18 +165,55 @@
 template void sendGetOrSetValueResultsSeparately<SetValueResult, SetValueResults>(
         std::shared_ptr<IVehicleCallback> callback, const std::vector<SetValueResult>& results);
 
+template void onTimeout<GetValueResult, GetValueResults>(
+        std::shared_ptr<::aidl::android::hardware::automotive::vehicle::IVehicleCallback> callback,
+        const std::unordered_set<int64_t>& timeoutIds);
+template void onTimeout<SetValueResult, SetValueResults>(
+        std::shared_ptr<::aidl::android::hardware::automotive::vehicle::IVehicleCallback> callback,
+        const std::unordered_set<int64_t>& timeoutIds);
+
+template void getOrSetValuesCallback<GetValueResult, GetValueResults>(
+        const void* clientId,
+        std::shared_ptr<::aidl::android::hardware::automotive::vehicle::IVehicleCallback> callback,
+        std::vector<GetValueResult> results, std::shared_ptr<PendingRequestPool> requestPool);
+template void getOrSetValuesCallback<SetValueResult, SetValueResults>(
+        const void* clientId,
+        std::shared_ptr<::aidl::android::hardware::automotive::vehicle::IVehicleCallback> callback,
+        std::vector<SetValueResult> results, std::shared_ptr<PendingRequestPool> requestPool);
+
 }  // namespace
 
-ConnectedClient::ConnectedClient(std::shared_ptr<IVehicleCallback> callback)
-    : mCallback(callback) {}
+ConnectedClient::ConnectedClient(std::shared_ptr<PendingRequestPool> requestPool,
+                                 std::shared_ptr<IVehicleCallback> callback)
+    : mRequestPool(requestPool), mCallback(callback) {}
+
+const void* ConnectedClient::id() {
+    return reinterpret_cast<const void*>(this);
+}
+
+Result<void> ConnectedClient::addRequests(const std::unordered_set<int64_t>& requestIds) {
+    return mRequestPool->addRequests(id(), requestIds, getTimeoutCallback());
+}
+
+std::unordered_set<int64_t> ConnectedClient::tryFinishRequests(
+        const std::unordered_set<int64_t>& requestIds) {
+    return mRequestPool->tryFinishRequests(id(), requestIds);
+}
 
 template <class ResultType, class ResultsType>
 GetSetValuesClient<ResultType, ResultsType>::GetSetValuesClient(
-        std::shared_ptr<IVehicleCallback> callback)
-    : ConnectedClient(callback) {
+        std::shared_ptr<PendingRequestPool> requestPool, std::shared_ptr<IVehicleCallback> callback)
+    : ConnectedClient(requestPool, callback) {
+    mTimeoutCallback = std::make_shared<const PendingRequestPool::TimeoutCallbackFunc>(
+            [callback](const std::unordered_set<int64_t>& timeoutIds) {
+                return onTimeout<ResultType, ResultsType>(callback, timeoutIds);
+            });
+    auto requestPoolCopy = mRequestPool;
+    const void* clientId = id();
     mResultCallback = std::make_shared<const std::function<void(std::vector<ResultType>)>>(
-            [callback](std::vector<ResultType> results) {
-                return sendGetOrSetValueResults<ResultType, ResultsType>(callback, results);
+            [clientId, callback, requestPoolCopy](std::vector<ResultType> results) {
+                return getOrSetValuesCallback<ResultType, ResultsType>(
+                        clientId, callback, std::move(results), requestPoolCopy);
             });
 }
 
@@ -140,6 +224,12 @@
 }
 
 template <class ResultType, class ResultsType>
+std::shared_ptr<const PendingRequestPool::TimeoutCallbackFunc>
+GetSetValuesClient<ResultType, ResultsType>::getTimeoutCallback() {
+    return mTimeoutCallback;
+}
+
+template <class ResultType, class ResultsType>
 void GetSetValuesClient<ResultType, ResultsType>::sendResults(
         const std::vector<ResultType>& results) {
     return sendGetOrSetValueResults<ResultType, ResultsType>(mCallback, results);
@@ -154,6 +244,93 @@
 template class GetSetValuesClient<GetValueResult, GetValueResults>;
 template class GetSetValuesClient<SetValueResult, SetValueResults>;
 
+SubscriptionClient::SubscriptionClient(std::shared_ptr<PendingRequestPool> requestPool,
+                                       std::shared_ptr<IVehicleCallback> callback)
+    : ConnectedClient(requestPool, callback) {
+    mTimeoutCallback = std::make_shared<const PendingRequestPool::TimeoutCallbackFunc>(
+            [](std::unordered_set<int64_t> timeoutIds) {
+                for (int64_t id : timeoutIds) {
+                    ALOGW("subscribe: requests with IDs: %" PRId64
+                          " has timed-out, not client informed, "
+                          "possibly one of recurrent requests for this subscription failed",
+                          id);
+                }
+            });
+    auto requestPoolCopy = mRequestPool;
+    const void* clientId = reinterpret_cast<const void*>(this);
+    mResultCallback = std::make_shared<const std::function<void(std::vector<GetValueResult>)>>(
+            [clientId, callback, requestPoolCopy](std::vector<GetValueResult> results) {
+                onGetValueResults(clientId, callback, requestPoolCopy, results);
+            });
+}
+
+std::shared_ptr<const std::function<void(std::vector<GetValueResult>)>>
+SubscriptionClient::getResultCallback() {
+    return mResultCallback;
+}
+
+std::shared_ptr<const PendingRequestPool::TimeoutCallbackFunc>
+SubscriptionClient::getTimeoutCallback() {
+    return mTimeoutCallback;
+}
+
+void SubscriptionClient::onGetValueResults(const void* clientId,
+                                           std::shared_ptr<IVehicleCallback> callback,
+                                           std::shared_ptr<PendingRequestPool> requestPool,
+                                           std::vector<GetValueResult> results) {
+    std::unordered_set<int64_t> requestIds;
+    for (const auto& result : results) {
+        requestIds.insert(result.requestId);
+    }
+
+    auto finishedRequests = requestPool->tryFinishRequests(clientId, requestIds);
+    std::vector<VehiclePropValue> propValues;
+    for (auto& result : results) {
+        int64_t requestId = result.requestId;
+        if (finishedRequests.find(requestId) == finishedRequests.end()) {
+            ALOGE("subscribe[%" PRId64
+                  "]: no pending request for the result from hardware, "
+                  "possibly already time-out",
+                  requestId);
+            continue;
+        }
+        if (result.status != StatusCode::OK) {
+            ALOGE("subscribe[%" PRId64
+                  "]: hardware returns non-ok status for getValues, status: "
+                  "%d",
+                  requestId, toInt(result.status));
+            continue;
+        }
+        if (!result.prop.has_value()) {
+            ALOGE("subscribe[%" PRId64 "]: no prop value in getValues result", requestId);
+            continue;
+        }
+        propValues.push_back(std::move(result.prop.value()));
+    }
+
+    if (propValues.empty()) {
+        return;
+    }
+    // TODO(b/205189110): Use memory pool here and fill in sharedMemoryId.
+    VehiclePropValues vehiclePropValues;
+    int32_t sharedMemoryFileCount = 0;
+    ScopedAStatus status = vectorToStableLargeParcelable(propValues, &vehiclePropValues);
+    if (!status.isOk()) {
+        int statusCode = status.getServiceSpecificError();
+        ALOGE("failed to marshal result into large parcelable, error: "
+              "%s, code: %d",
+              status.getMessage(), statusCode);
+        return;
+    }
+
+    if (ScopedAStatus callbackStatus =
+                callback->onPropertyEvent(vehiclePropValues, sharedMemoryFileCount);
+        !callbackStatus.isOk()) {
+        ALOGE("failed to call callback, error: %s, code: %d", status.getMessage(),
+              status.getServiceSpecificError());
+    }
+}
+
 }  // namespace vehicle
 }  // namespace automotive
 }  // namespace hardware
diff --git a/automotive/vehicle/aidl/impl/vhal/src/DefaultVehicleHal.cpp b/automotive/vehicle/aidl/impl/vhal/src/DefaultVehicleHal.cpp
index fd9e331..1e76eb7 100644
--- a/automotive/vehicle/aidl/impl/vhal/src/DefaultVehicleHal.cpp
+++ b/automotive/vehicle/aidl/impl/vhal/src/DefaultVehicleHal.cpp
@@ -21,32 +21,65 @@
 #include <LargeParcelableBase.h>
 #include <VehicleHalTypes.h>
 #include <VehicleUtils.h>
+
 #include <android-base/result.h>
 #include <utils/Log.h>
 
+#include <inttypes.h>
+#include <set>
+#include <unordered_set>
+
 namespace android {
 namespace hardware {
 namespace automotive {
 namespace vehicle {
 
+namespace {
+
+using ::aidl::android::hardware::automotive::vehicle::GetValueRequest;
 using ::aidl::android::hardware::automotive::vehicle::GetValueRequests;
+using ::aidl::android::hardware::automotive::vehicle::GetValueResult;
+using ::aidl::android::hardware::automotive::vehicle::GetValueResults;
 using ::aidl::android::hardware::automotive::vehicle::IVehicleCallback;
+using ::aidl::android::hardware::automotive::vehicle::SetValueRequest;
 using ::aidl::android::hardware::automotive::vehicle::SetValueRequests;
+using ::aidl::android::hardware::automotive::vehicle::SetValueResult;
+using ::aidl::android::hardware::automotive::vehicle::SetValueResults;
 using ::aidl::android::hardware::automotive::vehicle::StatusCode;
 using ::aidl::android::hardware::automotive::vehicle::SubscribeOptions;
+using ::aidl::android::hardware::automotive::vehicle::VehicleAreaConfig;
 using ::aidl::android::hardware::automotive::vehicle::VehiclePropConfig;
 using ::aidl::android::hardware::automotive::vehicle::VehiclePropConfigs;
+using ::aidl::android::hardware::automotive::vehicle::VehiclePropValue;
 using ::android::automotive::car_binder_lib::LargeParcelableBase;
+using ::android::base::Error;
+using ::android::base::expected;
 using ::android::base::Result;
 using ::ndk::ScopedAStatus;
 
+std::string toString(const std::unordered_set<int64_t>& values) {
+    std::string str = "";
+    for (auto it = values.begin(); it != values.end(); it++) {
+        str += std::to_string(*it);
+        if (std::next(it, 1) != values.end()) {
+            str += ", ";
+        }
+    }
+    return str;
+}
+
+}  // namespace
+
 DefaultVehicleHal::DefaultVehicleHal(std::unique_ptr<IVehicleHardware> hardware)
-    : mVehicleHardware(std::move(hardware)) {
+    : mVehicleHardware(std::move(hardware)),
+      mPendingRequestPool(std::make_shared<PendingRequestPool>(TIMEOUT_IN_NANO)) {
     auto configs = mVehicleHardware->getAllPropertyConfigs();
     for (auto& config : configs) {
         mConfigsByPropId[config.prop] = config;
     }
-    auto result = LargeParcelableBase::parcelableVectorToStableLargeParcelable(configs);
+    VehiclePropConfigs vehiclePropConfigs;
+    vehiclePropConfigs.payloads = std::move(configs);
+    auto result = LargeParcelableBase::parcelableToStableLargeParcelable(vehiclePropConfigs);
     if (!result.ok()) {
         ALOGE("failed to convert configs to shared memory file, error: %s, code: %d",
               getErrorMsg(result).c_str(), getIntErrorCode(result));
@@ -56,10 +89,81 @@
     if (result.value() != nullptr) {
         mConfigFile = std::move(result.value());
     }
+
+    mSubscriptionManager = std::make_unique<SubscriptionManager>(
+            [this](const CallbackType& callback, const VehiclePropValue& value) {
+                getValueFromHardwareCallCallback(callback, value);
+            });
+}
+
+DefaultVehicleHal::~DefaultVehicleHal() {
+    // mSubscriptionManager has reference to this, so must be destroyed before other members.
+    mSubscriptionManager.reset();
+}
+
+template <class T>
+std::shared_ptr<T> DefaultVehicleHal::getOrCreateClient(
+        std::unordered_map<CallbackType, std::shared_ptr<T>>* clients,
+        const CallbackType& callback) {
+    if (clients->find(callback) == clients->end()) {
+        // TODO(b/204943359): Remove client from clients when linkToDeath is implemented.
+        (*clients)[callback] = std::make_shared<T>(mPendingRequestPool, callback);
+    }
+    return (*clients)[callback];
+}
+
+template std::shared_ptr<DefaultVehicleHal::GetValuesClient>
+DefaultVehicleHal::getOrCreateClient<DefaultVehicleHal::GetValuesClient>(
+        std::unordered_map<CallbackType, std::shared_ptr<GetValuesClient>>* clients,
+        const CallbackType& callback);
+template std::shared_ptr<DefaultVehicleHal::SetValuesClient>
+DefaultVehicleHal::getOrCreateClient<DefaultVehicleHal::SetValuesClient>(
+        std::unordered_map<CallbackType, std::shared_ptr<SetValuesClient>>* clients,
+        const CallbackType& callback);
+template std::shared_ptr<SubscriptionClient>
+DefaultVehicleHal::getOrCreateClient<SubscriptionClient>(
+        std::unordered_map<CallbackType, std::shared_ptr<SubscriptionClient>>* clients,
+        const CallbackType& callback);
+
+void DefaultVehicleHal::getValueFromHardwareCallCallback(const CallbackType& callback,
+                                                         const VehiclePropValue& value) {
+    int64_t subscribeId;
+    std::shared_ptr<SubscriptionClient> client;
+    {
+        std::scoped_lock<std::mutex> lockGuard(mLock);
+        // This is initialized to 0 if callback does not exist in the map.
+        subscribeId = (mSubscribeIdByClient[callback])++;
+        client = getOrCreateClient(&mSubscriptionClients, callback);
+    }
+    if (auto addRequestResult = client->addRequests({subscribeId}); !addRequestResult.ok()) {
+        ALOGE("subscribe[%" PRId64 "]: too many pending requests, ignore the getValue request",
+              subscribeId);
+        return;
+    }
+
+    std::vector<GetValueRequest> hardwareRequests = {{
+            .requestId = subscribeId,
+            .prop = value,
+    }};
+
+    if (StatusCode status =
+                mVehicleHardware->getValues(client->getResultCallback(), hardwareRequests);
+        status != StatusCode::OK) {
+        // If the hardware returns error, finish all the pending requests for this request because
+        // we never expect hardware to call callback for these requests.
+        client->tryFinishRequests({subscribeId});
+        ALOGE("subscribe[%" PRId64 "]: failed to get value from VehicleHardware, code: %d",
+              subscribeId, toInt(status));
+    }
+}
+
+void DefaultVehicleHal::setTimeout(int64_t timeoutInNano) {
+    mPendingRequestPool = std::make_unique<PendingRequestPool>(timeoutInNano);
 }
 
 ScopedAStatus DefaultVehicleHal::getAllPropConfigs(VehiclePropConfigs* output) {
     if (mConfigFile != nullptr) {
+        output->payloads.clear();
         output->sharedMemoryFd.set(dup(mConfigFile->get()));
         return ScopedAStatus::ok();
     }
@@ -70,18 +174,181 @@
     return ScopedAStatus::ok();
 }
 
-ScopedAStatus DefaultVehicleHal::getValues(const std::shared_ptr<IVehicleCallback>&,
-                                           const GetValueRequests&) {
-    // TODO(b/200737967): implement this.
+Result<void> DefaultVehicleHal::checkProperty(const VehiclePropValue& propValue) {
+    int32_t propId = propValue.prop;
+    auto it = mConfigsByPropId.find(propId);
+    if (it == mConfigsByPropId.end()) {
+        return Error() << "no config for property, ID: " << propId;
+    }
+    const VehiclePropConfig& config = it->second;
+    const VehicleAreaConfig* areaConfig = getAreaConfig(propValue, config);
+    if (!isGlobalProp(propId) && areaConfig == nullptr) {
+        // Ignore areaId for global property. For non global property, check whether areaId is
+        // allowed. areaId must appear in areaConfig.
+        return Error() << "invalid area ID: " << propValue.areaId << " for prop ID: " << propId
+                       << ", not listed in config";
+    }
+    if (auto result = checkPropValue(propValue, &config); !result.ok()) {
+        return Error() << "invalid property value: " << propValue.toString()
+                       << ", error: " << result.error().message();
+    }
+    if (auto result = checkValueRange(propValue, areaConfig); !result.ok()) {
+        return Error() << "property value out of range: " << propValue.toString()
+                       << ", error: " << result.error().message();
+    }
+    return {};
+}
+
+ScopedAStatus DefaultVehicleHal::getValues(const CallbackType& callback,
+                                           const GetValueRequests& requests) {
+    expected<LargeParcelableBase::BorrowedOwnedObject<GetValueRequests>, ScopedAStatus>
+            deserializedResults = fromStableLargeParcelable(requests);
+    if (!deserializedResults.ok()) {
+        ALOGE("getValues: failed to parse getValues requests");
+        return std::move(deserializedResults.error());
+    }
+    const std::vector<GetValueRequest>& getValueRequests =
+            deserializedResults.value().getObject()->payloads;
+
+    auto maybeRequestIds = checkDuplicateRequests(getValueRequests);
+    if (!maybeRequestIds.ok()) {
+        ALOGE("getValues: duplicate request ID");
+        return toScopedAStatus(maybeRequestIds, StatusCode::INVALID_ARG);
+    }
+    // The set of request Ids that we would send to hardware.
+    std::unordered_set<int64_t> hardwareRequestIds(maybeRequestIds.value().begin(),
+                                                   maybeRequestIds.value().end());
+
+    std::shared_ptr<GetValuesClient> client;
+    {
+        std::scoped_lock<std::mutex> lockGuard(mLock);
+        client = getOrCreateClient(&mGetValuesClients, callback);
+    }
+    // Register the pending hardware requests and also check for duplicate request Ids.
+    if (auto addRequestResult = client->addRequests(hardwareRequestIds); !addRequestResult.ok()) {
+        ALOGE("getValues[%s]: failed to add pending requests, error: %s",
+              toString(hardwareRequestIds).c_str(), addRequestResult.error().message().c_str());
+        return toScopedAStatus(addRequestResult);
+    }
+
+    if (StatusCode status =
+                mVehicleHardware->getValues(client->getResultCallback(), getValueRequests);
+        status != StatusCode::OK) {
+        // If the hardware returns error, finish all the pending requests for this request because
+        // we never expect hardware to call callback for these requests.
+        client->tryFinishRequests(hardwareRequestIds);
+        ALOGE("getValues[%s]: failed to get value from VehicleHardware, status: %d",
+              toString(hardwareRequestIds).c_str(), toInt(status));
+        return ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                toInt(status), "failed to get value from VehicleHardware");
+    }
     return ScopedAStatus::ok();
 }
 
-ScopedAStatus DefaultVehicleHal::setValues(const std::shared_ptr<IVehicleCallback>&,
-                                           const SetValueRequests&) {
-    // TODO(b/200737967): implement this.
+ScopedAStatus DefaultVehicleHal::setValues(const CallbackType& callback,
+                                           const SetValueRequests& requests) {
+    expected<LargeParcelableBase::BorrowedOwnedObject<SetValueRequests>, ScopedAStatus>
+            deserializedResults = fromStableLargeParcelable(requests);
+    if (!deserializedResults.ok()) {
+        ALOGE("setValues: failed to parse setValues requests");
+        return std::move(deserializedResults.error());
+    }
+    const std::vector<SetValueRequest>& setValueRequests =
+            deserializedResults.value().getObject()->payloads;
+
+    // A list of failed result we already know before sending to hardware.
+    std::vector<SetValueResult> failedResults;
+    // The list of requests that we would send to hardware.
+    std::vector<SetValueRequest> hardwareRequests;
+
+    auto maybeRequestIds = checkDuplicateRequests(setValueRequests);
+    if (!maybeRequestIds.ok()) {
+        ALOGE("setValues: duplicate request ID");
+        return toScopedAStatus(maybeRequestIds, StatusCode::INVALID_ARG);
+    }
+
+    for (auto& request : setValueRequests) {
+        int64_t requestId = request.requestId;
+        if (auto result = checkProperty(request.value); !result.ok()) {
+            ALOGW("setValues[%" PRId64 "]: property not valid: %s", requestId,
+                  result.error().message().c_str());
+            failedResults.push_back(SetValueResult{
+                    .requestId = requestId,
+                    .status = StatusCode::INVALID_ARG,
+            });
+            continue;
+        }
+
+        hardwareRequests.push_back(request);
+    }
+
+    // The set of request Ids that we would send to hardware.
+    std::unordered_set<int64_t> hardwareRequestIds;
+    for (const auto& request : hardwareRequests) {
+        hardwareRequestIds.insert(request.requestId);
+    }
+
+    std::shared_ptr<SetValuesClient> client;
+    {
+        std::scoped_lock<std::mutex> lockGuard(mLock);
+        client = getOrCreateClient(&mSetValuesClients, callback);
+    }
+
+    // Register the pending hardware requests and also check for duplicate request Ids.
+    if (auto addRequestResult = client->addRequests(hardwareRequestIds); !addRequestResult.ok()) {
+        ALOGE("setValues[%s], failed to add pending requests, error: %s",
+              toString(hardwareRequestIds).c_str(), addRequestResult.error().message().c_str());
+        return toScopedAStatus(addRequestResult, StatusCode::INVALID_ARG);
+    }
+
+    if (!failedResults.empty()) {
+        // First send the failed results we already know back to the client.
+        client->sendResults(failedResults);
+    }
+
+    if (StatusCode status =
+                mVehicleHardware->setValues(client->getResultCallback(), hardwareRequests);
+        status != StatusCode::OK) {
+        // If the hardware returns error, finish all the pending requests for this request because
+        // we never expect hardware to call callback for these requests.
+        client->tryFinishRequests(hardwareRequestIds);
+        ALOGE("setValues[%s], failed to set value to VehicleHardware, status: %d",
+              toString(hardwareRequestIds).c_str(), toInt(status));
+        return ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                toInt(status), "failed to set value to VehicleHardware");
+    }
+
     return ScopedAStatus::ok();
 }
 
+#define CHECK_DUPLICATE_REQUESTS(PROP_NAME)                                                      \
+    do {                                                                                         \
+        std::vector<int64_t> requestIds;                                                         \
+        std::set<::aidl::android::hardware::automotive::vehicle::VehiclePropValue> requestProps; \
+        for (const auto& request : requests) {                                                   \
+            const auto& prop = request.PROP_NAME;                                                \
+            if (requestProps.count(prop) != 0) {                                                 \
+                return ::android::base::Error()                                                  \
+                       << "duplicate request for property: " << prop.toString();                 \
+            }                                                                                    \
+            requestProps.insert(prop);                                                           \
+            requestIds.push_back(request.requestId);                                             \
+        }                                                                                        \
+        return requestIds;                                                                       \
+    } while (0);
+
+::android::base::Result<std::vector<int64_t>> DefaultVehicleHal::checkDuplicateRequests(
+        const std::vector<GetValueRequest>& requests) {
+    CHECK_DUPLICATE_REQUESTS(prop);
+}
+
+::android::base::Result<std::vector<int64_t>> DefaultVehicleHal::checkDuplicateRequests(
+        const std::vector<SetValueRequest>& requests) {
+    CHECK_DUPLICATE_REQUESTS(value);
+}
+
+#undef CHECK_DUPLICATE_REQUESTS
+
 ScopedAStatus DefaultVehicleHal::getPropConfigs(const std::vector<int32_t>& props,
                                                 VehiclePropConfigs* output) {
     std::vector<VehiclePropConfig> configs;
@@ -90,23 +357,19 @@
             configs.push_back(mConfigsByPropId[prop]);
         }
     }
-    return defaultvehiclehal_impl::vectorToStableLargeParcelable(configs, output);
+    return vectorToStableLargeParcelable(std::move(configs), output);
 }
 
-ScopedAStatus DefaultVehicleHal::subscribe(const std::shared_ptr<IVehicleCallback>&,
+ScopedAStatus DefaultVehicleHal::subscribe(const CallbackType&,
                                            const std::vector<SubscribeOptions>&, int32_t) {
-    // TODO(b/200737967): implement this.
     return ScopedAStatus::ok();
 }
 
-ScopedAStatus DefaultVehicleHal::unsubscribe(const std::shared_ptr<IVehicleCallback>&,
-                                             const std::vector<int32_t>&) {
-    // TODO(b/200737967): implement this.
+ScopedAStatus DefaultVehicleHal::unsubscribe(const CallbackType&, const std::vector<int32_t>&) {
     return ScopedAStatus::ok();
 }
 
-ScopedAStatus DefaultVehicleHal::returnSharedMemory(const std::shared_ptr<IVehicleCallback>&,
-                                                    int64_t) {
+ScopedAStatus DefaultVehicleHal::returnSharedMemory(const CallbackType&, int64_t) {
     // TODO(b/200737967): implement this.
     return ScopedAStatus::ok();
 }
diff --git a/automotive/vehicle/aidl/impl/vhal/src/PendingRequestPool.cpp b/automotive/vehicle/aidl/impl/vhal/src/PendingRequestPool.cpp
new file mode 100644
index 0000000..23a5403
--- /dev/null
+++ b/automotive/vehicle/aidl/impl/vhal/src/PendingRequestPool.cpp
@@ -0,0 +1,232 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "PendingRequestPool.h"
+
+#include <VehicleHalTypes.h>
+#include <VehicleUtils.h>
+
+#include <utils/Log.h>
+#include <utils/SystemClock.h>
+
+#include <vector>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace vehicle {
+
+namespace {
+
+using ::aidl::android::hardware::automotive::vehicle::StatusCode;
+using ::android::base::Error;
+using ::android::base::Result;
+
+// At least check every 1s.
+constexpr int64_t CHECK_TIME_IN_NANO = 1000000000;
+
+}  // namespace
+
+PendingRequestPool::PendingRequestPool(int64_t timeoutInNano)
+    : mTimeoutInNano(timeoutInNano), mThread([this] {
+          // [this] must be alive within this thread because destructor would wait for this thread
+          // to exit.
+          int64_t sleepTime = std::min(mTimeoutInNano, static_cast<int64_t>(CHECK_TIME_IN_NANO));
+          std::unique_lock<std::mutex> lk(mCvLock);
+          while (!mCv.wait_for(lk, std::chrono::nanoseconds(sleepTime),
+                               [this] { return mThreadStop.load(); })) {
+              checkTimeout();
+          }
+      }) {}
+
+PendingRequestPool::~PendingRequestPool() {
+    mThreadStop = true;
+    mCv.notify_all();
+    if (mThread.joinable()) {
+        mThread.join();
+    }
+
+    // If this pool is being destructed, send out all pending requests as timeout.
+    {
+        std::scoped_lock<std::mutex> lockGuard(mLock);
+
+        for (auto& [_, pendingRequests] : mPendingRequestsByClient) {
+            for (const auto& request : pendingRequests) {
+                (*request.callback)(request.requestIds);
+            }
+        }
+        mPendingRequestsByClient.clear();
+    }
+}
+
+Result<void> PendingRequestPool::addRequests(const void* clientId,
+                                             const std::unordered_set<int64_t>& requestIds,
+                                             std::shared_ptr<const TimeoutCallbackFunc> callback) {
+    std::scoped_lock<std::mutex> lockGuard(mLock);
+    std::list<PendingRequest>* pendingRequests;
+    size_t pendingRequestCount = 0;
+    if (mPendingRequestsByClient.find(clientId) != mPendingRequestsByClient.end()) {
+        pendingRequests = &mPendingRequestsByClient[clientId];
+        for (const auto& pendingRequest : *pendingRequests) {
+            const auto& pendingRequestIds = pendingRequest.requestIds;
+            for (int64_t requestId : requestIds) {
+                if (pendingRequestIds.find(requestId) != pendingRequestIds.end()) {
+                    return Error(toInt(StatusCode::INVALID_ARG))
+                           << "duplicate request ID: " << requestId;
+                }
+            }
+            pendingRequestCount += pendingRequestIds.size();
+        }
+    } else {
+        // Create a new empty list for this client.
+        pendingRequests = &mPendingRequestsByClient[clientId];
+    }
+
+    if (requestIds.size() > MAX_PENDING_REQUEST_PER_CLIENT - pendingRequestCount) {
+        return Error(toInt(StatusCode::TRY_AGAIN)) << "too many pending requests";
+    }
+
+    int64_t currentTime = elapsedRealtimeNano();
+    int64_t timeoutTimestamp = currentTime + mTimeoutInNano;
+
+    pendingRequests->push_back({
+            .requestIds = std::unordered_set<int64_t>(requestIds.begin(), requestIds.end()),
+            .timeoutTimestamp = timeoutTimestamp,
+            .callback = callback,
+    });
+
+    return {};
+}
+
+bool PendingRequestPool::isRequestPending(const void* clientId, int64_t requestId) const {
+    std::scoped_lock<std::mutex> lockGuard(mLock);
+
+    return isRequestPendingLocked(clientId, requestId);
+}
+
+size_t PendingRequestPool::countPendingRequests() const {
+    std::scoped_lock<std::mutex> lockGuard(mLock);
+
+    size_t count = 0;
+    for (const auto& [clientId, requests] : mPendingRequestsByClient) {
+        for (const auto& request : requests) {
+            count += request.requestIds.size();
+        }
+    }
+    return count;
+}
+
+size_t PendingRequestPool::countPendingRequests(const void* clientId) const {
+    std::scoped_lock<std::mutex> lockGuard(mLock);
+
+    auto it = mPendingRequestsByClient.find(clientId);
+    if (it == mPendingRequestsByClient.end()) {
+        return 0;
+    }
+
+    size_t count = 0;
+    for (const auto& pendingRequest : it->second) {
+        count += pendingRequest.requestIds.size();
+    }
+
+    return count;
+}
+
+bool PendingRequestPool::isRequestPendingLocked(const void* clientId, int64_t requestId) const {
+    auto it = mPendingRequestsByClient.find(clientId);
+    if (it == mPendingRequestsByClient.end()) {
+        return false;
+    }
+    for (const auto& pendingRequest : it->second) {
+        const auto& requestIds = pendingRequest.requestIds;
+        if (requestIds.find(requestId) != requestIds.end()) {
+            return true;
+        }
+    }
+    return false;
+}
+
+void PendingRequestPool::checkTimeout() {
+    std::vector<PendingRequest> timeoutRequests;
+    {
+        std::scoped_lock<std::mutex> lockGuard(mLock);
+
+        int64_t currentTime = elapsedRealtimeNano();
+
+        std::vector<const void*> clientsWithEmptyRequests;
+
+        for (auto& [clientId, pendingRequests] : mPendingRequestsByClient) {
+            auto it = pendingRequests.begin();
+            while (it != pendingRequests.end()) {
+                if (it->timeoutTimestamp >= currentTime) {
+                    break;
+                }
+                timeoutRequests.push_back(std::move(*it));
+                it = pendingRequests.erase(it);
+            }
+
+            if (pendingRequests.empty()) {
+                clientsWithEmptyRequests.push_back(clientId);
+            }
+        }
+
+        for (const void* clientId : clientsWithEmptyRequests) {
+            mPendingRequestsByClient.erase(clientId);
+        }
+    }
+
+    // Call the callback outside the lock.
+    for (const auto& request : timeoutRequests) {
+        (*request.callback)(request.requestIds);
+    }
+}
+
+std::unordered_set<int64_t> PendingRequestPool::tryFinishRequests(
+        const void* clientId, const std::unordered_set<int64_t>& requestIds) {
+    std::scoped_lock<std::mutex> lockGuard(mLock);
+
+    std::unordered_set<int64_t> foundIds;
+
+    if (mPendingRequestsByClient.find(clientId) == mPendingRequestsByClient.end()) {
+        return foundIds;
+    }
+
+    auto& pendingRequests = mPendingRequestsByClient[clientId];
+    auto it = pendingRequests.begin();
+    while (it != pendingRequests.end()) {
+        auto& pendingRequestIds = it->requestIds;
+        for (int64_t requestId : requestIds) {
+            auto idIt = pendingRequestIds.find(requestId);
+            if (idIt == pendingRequestIds.end()) {
+                continue;
+            }
+            pendingRequestIds.erase(idIt);
+            foundIds.insert(requestId);
+        }
+        if (pendingRequestIds.empty()) {
+            it = pendingRequests.erase(it);
+            continue;
+        }
+        it++;
+    }
+
+    return foundIds;
+}
+
+}  // namespace vehicle
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/vehicle/aidl/impl/vhal/src/RecurrentTimer.cpp b/automotive/vehicle/aidl/impl/vhal/src/RecurrentTimer.cpp
new file mode 100644
index 0000000..8521c4d
--- /dev/null
+++ b/automotive/vehicle/aidl/impl/vhal/src/RecurrentTimer.cpp
@@ -0,0 +1,177 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "RecurrentTimer.h"
+
+#include <utils/Log.h>
+#include <utils/SystemClock.h>
+
+#include <inttypes.h>
+#include <math.h>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace vehicle {
+
+using ::android::base::ScopedLockAssertion;
+
+RecurrentTimer::RecurrentTimer() : mThread(&RecurrentTimer::loop, this) {}
+
+RecurrentTimer::~RecurrentTimer() {
+    {
+        std::scoped_lock<std::mutex> lockGuard(mLock);
+        mStopRequested = true;
+    }
+    mCond.notify_one();
+    if (mThread.joinable()) {
+        mThread.join();
+    }
+}
+
+void RecurrentTimer::registerTimerCallback(int64_t intervalInNano,
+                                           std::shared_ptr<RecurrentTimer::Callback> callback) {
+    {
+        std::scoped_lock<std::mutex> lockGuard(mLock);
+
+        // Aligns the nextTime to multiply of interval.
+        int64_t nextTime = ceil(elapsedRealtimeNano() / intervalInNano) * intervalInNano;
+
+        std::unique_ptr<CallbackInfo> info = std::make_unique<CallbackInfo>();
+        info->callback = callback;
+        info->interval = intervalInNano;
+        info->nextTime = nextTime;
+
+        auto it = mCallbacks.find(callback);
+        if (it != mCallbacks.end()) {
+            ALOGI("Replacing an existing timer callback with a new interval, current: %" PRId64
+                  " ns, new: %" PRId64 " ns",
+                  it->second->interval, intervalInNano);
+            markOutdatedLocked(it->second);
+        }
+        mCallbacks[callback] = info.get();
+        mCallbackQueue.push_back(std::move(info));
+        // Insert the last element into the heap.
+        std::push_heap(mCallbackQueue.begin(), mCallbackQueue.end(), CallbackInfo::cmp);
+    }
+    mCond.notify_one();
+}
+
+void RecurrentTimer::unregisterTimerCallback(std::shared_ptr<RecurrentTimer::Callback> callback) {
+    {
+        std::scoped_lock<std::mutex> lockGuard(mLock);
+
+        auto it = mCallbacks.find(callback);
+        if (it == mCallbacks.end()) {
+            ALOGE("No event found to unregister");
+            return;
+        }
+
+        markOutdatedLocked(it->second);
+        mCallbacks.erase(it);
+    }
+
+    mCond.notify_one();
+}
+
+void RecurrentTimer::markOutdatedLocked(RecurrentTimer::CallbackInfo* info) {
+    info->outdated = true;
+    info->callback = nullptr;
+    // Make sure the first element is always valid.
+    removeInvalidCallbackLocked();
+}
+
+void RecurrentTimer::removeInvalidCallbackLocked() {
+    while (mCallbackQueue.size() != 0 && mCallbackQueue[0]->outdated) {
+        std::pop_heap(mCallbackQueue.begin(), mCallbackQueue.end(), CallbackInfo::cmp);
+        mCallbackQueue.pop_back();
+    }
+}
+
+std::unique_ptr<RecurrentTimer::CallbackInfo> RecurrentTimer::popNextCallbackLocked() {
+    std::pop_heap(mCallbackQueue.begin(), mCallbackQueue.end(), CallbackInfo::cmp);
+    std::unique_ptr<CallbackInfo> info = std::move(mCallbackQueue[mCallbackQueue.size() - 1]);
+    mCallbackQueue.pop_back();
+    // Make sure the first element is always valid.
+    removeInvalidCallbackLocked();
+    return info;
+}
+
+void RecurrentTimer::loop() {
+    std::unique_lock<std::mutex> uniqueLock(mLock);
+
+    while (true) {
+        // Wait until the timer exits or we have at least one recurrent callback.
+        mCond.wait(uniqueLock, [this] {
+            ScopedLockAssertion lockAssertion(mLock);
+            return mStopRequested || mCallbackQueue.size() != 0;
+        });
+
+        int64_t interval;
+        {
+            ScopedLockAssertion lockAssertion(mLock);
+            if (mStopRequested) {
+                return;
+            }
+            // The first element is the nearest next event.
+            int64_t nextTime = mCallbackQueue[0]->nextTime;
+            int64_t now = elapsedRealtimeNano();
+            if (nextTime > now) {
+                interval = nextTime - now;
+            } else {
+                interval = 0;
+            }
+        }
+
+        // Wait for the next event or the timer exits.
+        if (mCond.wait_for(uniqueLock, std::chrono::nanoseconds(interval), [this] {
+                ScopedLockAssertion lockAssertion(mLock);
+                return mStopRequested;
+            })) {
+            return;
+        }
+
+        {
+            ScopedLockAssertion lockAssertion(mLock);
+            int64_t now = elapsedRealtimeNano();
+            while (mCallbackQueue.size() > 0) {
+                int64_t nextTime = mCallbackQueue[0]->nextTime;
+                if (nextTime > now) {
+                    break;
+                }
+
+                std::unique_ptr<CallbackInfo> info = popNextCallbackLocked();
+                info->nextTime += info->interval;
+
+                auto callback = info->callback;
+                mCallbackQueue.push_back(std::move(info));
+                std::push_heap(mCallbackQueue.begin(), mCallbackQueue.end(), CallbackInfo::cmp);
+
+                (*callback)();
+            }
+        }
+    }
+}
+
+bool RecurrentTimer::CallbackInfo::cmp(const std::unique_ptr<RecurrentTimer::CallbackInfo>& lhs,
+                                       const std::unique_ptr<RecurrentTimer::CallbackInfo>& rhs) {
+    return lhs->nextTime > rhs->nextTime;
+}
+
+}  // namespace vehicle
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/vehicle/aidl/impl/vhal/src/SubscriptionManager.cpp b/automotive/vehicle/aidl/impl/vhal/src/SubscriptionManager.cpp
new file mode 100644
index 0000000..dc9a6ce
--- /dev/null
+++ b/automotive/vehicle/aidl/impl/vhal/src/SubscriptionManager.cpp
@@ -0,0 +1,240 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "SubscriptionManager.h"
+
+#include <math/HashCombine.h>
+#include <utils/Log.h>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace vehicle {
+
+namespace {
+
+constexpr float ONE_SECOND_IN_NANO = 1000000000.;
+
+}  // namespace
+
+using ::aidl::android::hardware::automotive::vehicle::IVehicleCallback;
+using ::aidl::android::hardware::automotive::vehicle::SubscribeOptions;
+using ::aidl::android::hardware::automotive::vehicle::VehiclePropValue;
+using ::android::base::Error;
+using ::android::base::Result;
+using ::ndk::ScopedAStatus;
+
+bool SubscriptionManager::PropIdAreaId::operator==(const PropIdAreaId& other) const {
+    return areaId == other.areaId && propId == other.propId;
+}
+
+size_t SubscriptionManager::PropIdAreaIdHash::operator()(PropIdAreaId const& propIdAreaId) const {
+    size_t res = 0;
+    hashCombine(res, propIdAreaId.propId);
+    hashCombine(res, propIdAreaId.areaId);
+    return res;
+}
+
+SubscriptionManager::SubscriptionManager(GetValueFunc&& action)
+    : mTimer(std::make_shared<RecurrentTimer>()), mGetValue(std::move(action)) {}
+
+SubscriptionManager::~SubscriptionManager() {
+    std::scoped_lock<std::mutex> lockGuard(mLock);
+
+    mClientsByPropIdArea.clear();
+    mSubscriptionsByClient.clear();
+}
+
+bool SubscriptionManager::checkSampleRate(float sampleRate) {
+    return getInterval(sampleRate).ok();
+}
+
+Result<int64_t> SubscriptionManager::getInterval(float sampleRate) {
+    int64_t interval = 0;
+    if (sampleRate <= 0) {
+        return Error() << "invalid sample rate, must be a positive number";
+    }
+    if (sampleRate <= (ONE_SECOND_IN_NANO / static_cast<float>(INT64_MAX))) {
+        return Error() << "invalid sample rate: " << sampleRate << ", too small";
+    }
+    interval = static_cast<int64_t>(ONE_SECOND_IN_NANO / sampleRate);
+    return interval;
+}
+
+Result<void> SubscriptionManager::subscribe(const std::shared_ptr<IVehicleCallback>& callback,
+                                            const std::vector<SubscribeOptions>& options,
+                                            bool isContinuousProperty) {
+    std::scoped_lock<std::mutex> lockGuard(mLock);
+
+    std::vector<int64_t> intervals;
+
+    for (const auto& option : options) {
+        float sampleRate = option.sampleRate;
+
+        if (isContinuousProperty) {
+            auto intervalResult = getInterval(sampleRate);
+            if (!intervalResult.ok()) {
+                return intervalResult.error();
+            }
+            intervals.push_back(intervalResult.value());
+        }
+
+        if (option.areaIds.empty()) {
+            ALOGE("area IDs to subscribe must not be empty");
+            return Error() << "area IDs to subscribe must not be empty";
+        }
+    }
+
+    size_t intervalIndex = 0;
+    for (const auto& option : options) {
+        int32_t propId = option.propId;
+        const std::vector<int32_t>& areaIds = option.areaIds;
+        int64_t interval = 0;
+        if (isContinuousProperty) {
+            interval = intervals[intervalIndex];
+            intervalIndex++;
+        }
+        for (int32_t areaId : areaIds) {
+            PropIdAreaId propIdAreaId = {
+                    .propId = propId,
+                    .areaId = areaId,
+            };
+            if (isContinuousProperty) {
+                VehiclePropValue propValueRequest{
+                        .prop = propId,
+                        .areaId = areaId,
+                };
+                mSubscriptionsByClient[callback][propIdAreaId] =
+                        std::make_unique<RecurrentSubscription>(
+                                mTimer,
+                                [this, callback, propValueRequest] {
+                                    mGetValue(callback, propValueRequest);
+                                },
+                                interval);
+            } else {
+                mSubscriptionsByClient[callback][propIdAreaId] =
+                        std::make_unique<OnChangeSubscription>();
+            }
+            mClientsByPropIdArea[propIdAreaId].insert(callback);
+        }
+    }
+    return {};
+}
+
+Result<void> SubscriptionManager::unsubscribe(const std::shared_ptr<IVehicleCallback>& callback,
+                                              const std::vector<int32_t>& propIds) {
+    std::scoped_lock<std::mutex> lockGuard(mLock);
+
+    if (mSubscriptionsByClient.find(callback) == mSubscriptionsByClient.end()) {
+        return Error() << "No property was subscribed for the callback";
+    }
+    std::unordered_set<int32_t> subscribedPropIds;
+    for (auto const& [propIdAreaId, _] : mSubscriptionsByClient[callback]) {
+        subscribedPropIds.insert(propIdAreaId.propId);
+    }
+
+    for (int32_t propId : propIds) {
+        if (subscribedPropIds.find(propId) == subscribedPropIds.end()) {
+            return Error() << "property ID: " << propId << " is not subscribed";
+        }
+    }
+
+    auto& subscriptions = mSubscriptionsByClient[callback];
+    auto it = subscriptions.begin();
+    while (it != subscriptions.end()) {
+        int32_t propId = it->first.propId;
+        if (std::find(propIds.begin(), propIds.end(), propId) != propIds.end()) {
+            auto& clients = mClientsByPropIdArea[it->first];
+            clients.erase(callback);
+            if (clients.empty()) {
+                mClientsByPropIdArea.erase(it->first);
+            }
+            it = subscriptions.erase(it);
+        } else {
+            it++;
+        }
+    }
+    if (subscriptions.empty()) {
+        mSubscriptionsByClient.erase(callback);
+    }
+    return {};
+}
+
+Result<void> SubscriptionManager::unsubscribe(const std::shared_ptr<IVehicleCallback>& callback) {
+    std::scoped_lock<std::mutex> lockGuard(mLock);
+
+    if (mSubscriptionsByClient.find(callback) == mSubscriptionsByClient.end()) {
+        return Error() << "No property was subscribed for the callback";
+    }
+
+    auto& subscriptions = mSubscriptionsByClient[callback];
+    for (auto const& [propIdAreaId, _] : subscriptions) {
+        auto& clients = mClientsByPropIdArea[propIdAreaId];
+        clients.erase(callback);
+        if (clients.empty()) {
+            mClientsByPropIdArea.erase(propIdAreaId);
+        }
+    }
+    mSubscriptionsByClient.erase(callback);
+    return {};
+}
+
+std::unordered_map<std::shared_ptr<IVehicleCallback>, std::vector<const VehiclePropValue*>>
+SubscriptionManager::getSubscribedClients(const std::vector<VehiclePropValue>& updatedValues) {
+    std::scoped_lock<std::mutex> lockGuard(mLock);
+    std::unordered_map<std::shared_ptr<IVehicleCallback>, std::vector<const VehiclePropValue*>>
+            clients;
+
+    for (const auto& value : updatedValues) {
+        PropIdAreaId propIdAreaId{
+                .propId = value.prop,
+                .areaId = value.areaId,
+        };
+        if (mClientsByPropIdArea.find(propIdAreaId) == mClientsByPropIdArea.end()) {
+            continue;
+        }
+        for (const auto& client : mClientsByPropIdArea[propIdAreaId]) {
+            if (!mSubscriptionsByClient[client][propIdAreaId]->isOnChange()) {
+                continue;
+            }
+            clients[client].push_back(&value);
+        }
+    }
+    return clients;
+}
+
+SubscriptionManager::RecurrentSubscription::RecurrentSubscription(
+        std::shared_ptr<RecurrentTimer> timer, std::function<void()>&& action, int64_t interval)
+    : mAction(std::make_shared<std::function<void()>>(action)), mTimer(timer) {
+    mTimer->registerTimerCallback(interval, mAction);
+}
+
+SubscriptionManager::RecurrentSubscription::~RecurrentSubscription() {
+    mTimer->unregisterTimerCallback(mAction);
+}
+
+bool SubscriptionManager::RecurrentSubscription::isOnChange() {
+    return false;
+}
+
+bool SubscriptionManager::OnChangeSubscription::isOnChange() {
+    return true;
+}
+
+}  // namespace vehicle
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/vehicle/aidl/impl/vhal/test/ConnectedClientTest.cpp b/automotive/vehicle/aidl/impl/vhal/test/ConnectedClientTest.cpp
index ddd0c65..bd4a565 100644
--- a/automotive/vehicle/aidl/impl/vhal/test/ConnectedClientTest.cpp
+++ b/automotive/vehicle/aidl/impl/vhal/test/ConnectedClientTest.cpp
@@ -39,12 +39,17 @@
     void SetUp() override {
         mCallback = ndk::SharedRefBase::make<MockVehicleCallback>();
         mCallbackClient = IVehicleCallback::fromBinder(mCallback->asBinder());
+        // timeout: 1s.
+        int64_t timeout = 1000000000;
+        mPool = std::make_shared<PendingRequestPool>(timeout);
     }
 
     std::shared_ptr<IVehicleCallback> getCallbackClient() { return mCallbackClient; }
 
     MockVehicleCallback* getCallback() { return mCallback.get(); }
 
+    std::shared_ptr<PendingRequestPool> getPool() { return mPool; }
+
   protected:
     using GetValuesClient = GetSetValuesClient<GetValueResult, GetValueResults>;
     using SetValuesClient = GetSetValuesClient<SetValueResult, SetValueResults>;
@@ -52,6 +57,7 @@
   private:
     std::shared_ptr<MockVehicleCallback> mCallback;
     std::shared_ptr<IVehicleCallback> mCallbackClient;
+    std::shared_ptr<PendingRequestPool> mPool;
 };
 
 TEST_F(ConnectedClientTest, testSendGetValueResults) {
@@ -72,7 +78,7 @@
                                                            },
                                            }};
 
-    GetValuesClient client(getCallbackClient());
+    GetValuesClient client(getPool(), getCallbackClient());
 
     client.sendResults(results);
 
@@ -99,7 +105,7 @@
                                                            },
                                            }};
 
-    GetValuesClient client(getCallbackClient());
+    GetValuesClient client(getPool(), getCallbackClient());
 
     client.sendResultsSeparately(results);
 
@@ -131,7 +137,9 @@
                                                            },
                                            }};
 
-    GetValuesClient client(getCallbackClient());
+    GetValuesClient client(getPool(), getCallbackClient());
+
+    client.addRequests({0, 1});
 
     (*(client.getResultCallback()))(results);
 
@@ -150,7 +158,7 @@
                                                    .status = StatusCode::OK,
                                            }};
 
-    SetValuesClient client(getCallbackClient());
+    SetValuesClient client(getPool(), getCallbackClient());
 
     client.sendResults(results);
 
@@ -169,7 +177,7 @@
                                                    .status = StatusCode::OK,
                                            }};
 
-    SetValuesClient client(getCallbackClient());
+    SetValuesClient client(getPool(), getCallbackClient());
 
     client.sendResultsSeparately(results);
 
@@ -193,7 +201,9 @@
                                                    .status = StatusCode::OK,
                                            }};
 
-    SetValuesClient client(getCallbackClient());
+    SetValuesClient client(getPool(), getCallbackClient());
+
+    client.addRequests({0, 1});
 
     (*(client.getResultCallback()))(results);
 
diff --git a/automotive/vehicle/aidl/impl/vhal/test/DefaultVehicleHalTest.cpp b/automotive/vehicle/aidl/impl/vhal/test/DefaultVehicleHalTest.cpp
index 2b5ca70..d763f03 100644
--- a/automotive/vehicle/aidl/impl/vhal/test/DefaultVehicleHalTest.cpp
+++ b/automotive/vehicle/aidl/impl/vhal/test/DefaultVehicleHalTest.cpp
@@ -14,18 +14,27 @@
  * limitations under the License.
  */
 
+#include "ConnectedClient.h"
 #include "DefaultVehicleHal.h"
+#include "MockVehicleCallback.h"
 
 #include <IVehicleHardware.h>
 #include <LargeParcelableBase.h>
 #include <aidl/android/hardware/automotive/vehicle/IVehicle.h>
-#include <android-base/thread_annotations.h>
+#include <aidl/android/hardware/automotive/vehicle/IVehicleCallback.h>
 
+#include <android-base/thread_annotations.h>
 #include <gmock/gmock.h>
 #include <gtest/gtest.h>
+#include <utils/Log.h>
 
+#include <chrono>
+#include <list>
 #include <memory>
+#include <mutex>
 #include <optional>
+#include <thread>
+#include <unordered_map>
 #include <vector>
 
 namespace android {
@@ -36,38 +45,78 @@
 namespace {
 
 using ::aidl::android::hardware::automotive::vehicle::GetValueRequest;
+using ::aidl::android::hardware::automotive::vehicle::GetValueRequests;
 using ::aidl::android::hardware::automotive::vehicle::GetValueResult;
+using ::aidl::android::hardware::automotive::vehicle::GetValueResults;
 using ::aidl::android::hardware::automotive::vehicle::IVehicle;
+using ::aidl::android::hardware::automotive::vehicle::IVehicleCallback;
 using ::aidl::android::hardware::automotive::vehicle::SetValueRequest;
+using ::aidl::android::hardware::automotive::vehicle::SetValueRequests;
 using ::aidl::android::hardware::automotive::vehicle::SetValueResult;
+using ::aidl::android::hardware::automotive::vehicle::SetValueResults;
 using ::aidl::android::hardware::automotive::vehicle::StatusCode;
+using ::aidl::android::hardware::automotive::vehicle::VehicleAreaWindow;
 using ::aidl::android::hardware::automotive::vehicle::VehiclePropConfig;
 using ::aidl::android::hardware::automotive::vehicle::VehiclePropConfigs;
+using ::aidl::android::hardware::automotive::vehicle::VehiclePropErrors;
 using ::aidl::android::hardware::automotive::vehicle::VehiclePropValue;
+using ::aidl::android::hardware::automotive::vehicle::VehiclePropValues;
 
 using ::android::automotive::car_binder_lib::LargeParcelableBase;
 using ::android::base::Result;
 
+using ::ndk::ScopedAStatus;
+using ::ndk::ScopedFileDescriptor;
+
 using ::testing::Eq;
+using ::testing::UnorderedElementsAreArray;
 using ::testing::WhenSortedBy;
 
+constexpr int32_t INVALID_PROP_ID = 0;
+// VehiclePropertyGroup:SYSTEM,VehicleArea:WINDOW,VehiclePropertyType:INT32
+constexpr int32_t INT32_WINDOW_PROP = 10001 + 0x10000000 + 0x03000000 + 0x00400000;
+
+template <class T>
+std::optional<T> pop(std::list<T>& items) {
+    if (items.size() > 0) {
+        auto item = std::move(items.front());
+        items.pop_front();
+        return item;
+    }
+    return std::nullopt;
+}
+
+int32_t testInt32VecProp(size_t i) {
+    // VehiclePropertyGroup:SYSTEM,VehicleArea:GLOBAL,VehiclePropertyType:INT32_VEC
+    return static_cast<int32_t>(i) + 0x10000000 + 0x01000000 + 0x00410000;
+}
+
 class MockVehicleHardware final : public IVehicleHardware {
   public:
+    ~MockVehicleHardware() {
+        std::scoped_lock<std::mutex> lockGuard(mLock);
+        for (auto& thread : mThreads) {
+            thread.join();
+        }
+    }
+
     std::vector<VehiclePropConfig> getAllPropertyConfigs() const override {
         std::scoped_lock<std::mutex> lockGuard(mLock);
         return mPropertyConfigs;
     }
 
-    StatusCode setValues(std::shared_ptr<const SetValuesCallback>,
-                         const std::vector<SetValueRequest>&) override {
-        // TODO(b/200737967): mock this.
-        return StatusCode::OK;
+    StatusCode setValues(std::shared_ptr<const SetValuesCallback> callback,
+                         const std::vector<SetValueRequest>& requests) override {
+        std::scoped_lock<std::mutex> lockGuard(mLock);
+        return handleRequests(__func__, callback, requests, &mSetValueRequests,
+                              &mSetValueResponses);
     }
 
-    StatusCode getValues(std::shared_ptr<const GetValuesCallback>,
-                         const std::vector<GetValueRequest>&) const override {
-        // TODO(b/200737967): mock this.
-        return StatusCode::OK;
+    StatusCode getValues(std::shared_ptr<const GetValuesCallback> callback,
+                         const std::vector<GetValueRequest>& requests) const override {
+        std::scoped_lock<std::mutex> lockGuard(mLock);
+        return handleRequests(__func__, callback, requests, &mGetValueRequests,
+                              &mGetValueResponses);
     }
 
     DumpResult dump(const std::vector<std::string>&) override {
@@ -94,20 +143,325 @@
         mPropertyConfigs = configs;
     }
 
+    void addGetValueResponses(const std::vector<GetValueResult>& responses) {
+        std::scoped_lock<std::mutex> lockGuard(mLock);
+        mGetValueResponses.push_back(responses);
+    }
+
+    void addSetValueResponses(const std::vector<SetValueResult>& responses) {
+        std::scoped_lock<std::mutex> lockGuard(mLock);
+        mSetValueResponses.push_back(responses);
+    }
+
+    std::vector<GetValueRequest> nextGetValueRequests() {
+        std::scoped_lock<std::mutex> lockGuard(mLock);
+        std::optional<std::vector<GetValueRequest>> request = pop(mGetValueRequests);
+        if (!request.has_value()) {
+            return std::vector<GetValueRequest>();
+        }
+        return std::move(request.value());
+    }
+
+    std::vector<SetValueRequest> nextSetValueRequests() {
+        std::scoped_lock<std::mutex> lockGuard(mLock);
+        std::optional<std::vector<SetValueRequest>> request = pop(mSetValueRequests);
+        if (!request.has_value()) {
+            return std::vector<SetValueRequest>();
+        }
+        return std::move(request.value());
+    }
+
+    void setStatus(const char* functionName, StatusCode status) {
+        std::scoped_lock<std::mutex> lockGuard(mLock);
+        mStatusByFunctions[functionName] = status;
+    }
+
+    void setSleepTime(int64_t timeInNano) {
+        std::scoped_lock<std::mutex> lockGuard(mLock);
+        mSleepTime = timeInNano;
+    }
+
   private:
     mutable std::mutex mLock;
     std::vector<VehiclePropConfig> mPropertyConfigs GUARDED_BY(mLock);
+    mutable std::list<std::vector<GetValueRequest>> mGetValueRequests GUARDED_BY(mLock);
+    mutable std::list<std::vector<GetValueResult>> mGetValueResponses GUARDED_BY(mLock);
+    mutable std::list<std::vector<SetValueRequest>> mSetValueRequests GUARDED_BY(mLock);
+    mutable std::list<std::vector<SetValueResult>> mSetValueResponses GUARDED_BY(mLock);
+    std::unordered_map<const char*, StatusCode> mStatusByFunctions GUARDED_BY(mLock);
+    int64_t mSleepTime GUARDED_BY(mLock) = 0;
+    mutable std::vector<std::thread> mThreads GUARDED_BY(mLock);
+
+    template <class ResultType>
+    StatusCode returnResponse(
+            std::shared_ptr<const std::function<void(std::vector<ResultType>)>> callback,
+            std::list<std::vector<ResultType>>* storedResponses) const;
+
+    template <class RequestType, class ResultType>
+    StatusCode handleRequests(
+            const char* functionName,
+            std::shared_ptr<const std::function<void(std::vector<ResultType>)>> callback,
+            const std::vector<RequestType>& requests,
+            std::list<std::vector<RequestType>>* storedRequests,
+            std::list<std::vector<ResultType>>* storedResponses) const REQUIRES(mLock);
 };
 
+template <class ResultType>
+StatusCode MockVehicleHardware::returnResponse(
+        std::shared_ptr<const std::function<void(std::vector<ResultType>)>> callback,
+        std::list<std::vector<ResultType>>* storedResponses) const {
+    if (storedResponses->size() > 0) {
+        (*callback)(std::move(storedResponses->front()));
+        storedResponses->pop_front();
+        return StatusCode::OK;
+    } else {
+        ALOGE("no more response");
+        return StatusCode::INTERNAL_ERROR;
+    }
+}
+
+template StatusCode MockVehicleHardware::returnResponse<GetValueResult>(
+        std::shared_ptr<const std::function<void(std::vector<GetValueResult>)>> callback,
+        std::list<std::vector<GetValueResult>>* storedResponses) const;
+
+template StatusCode MockVehicleHardware::returnResponse<SetValueResult>(
+        std::shared_ptr<const std::function<void(std::vector<SetValueResult>)>> callback,
+        std::list<std::vector<SetValueResult>>* storedResponses) const;
+
+template <class RequestType, class ResultType>
+StatusCode MockVehicleHardware::handleRequests(
+        const char* functionName,
+        std::shared_ptr<const std::function<void(std::vector<ResultType>)>> callback,
+        const std::vector<RequestType>& requests,
+        std::list<std::vector<RequestType>>* storedRequests,
+        std::list<std::vector<ResultType>>* storedResponses) const {
+    storedRequests->push_back(requests);
+    if (auto it = mStatusByFunctions.find(functionName); it != mStatusByFunctions.end()) {
+        if (StatusCode status = it->second; status != StatusCode::OK) {
+            return status;
+        }
+    }
+
+    if (mSleepTime != 0) {
+        int64_t sleepTime = mSleepTime;
+        mThreads.emplace_back([this, callback, sleepTime, storedResponses]() {
+            std::this_thread::sleep_for(std::chrono::nanoseconds(sleepTime));
+            returnResponse(callback, storedResponses);
+        });
+        return StatusCode::OK;
+
+    } else {
+        return returnResponse(callback, storedResponses);
+    }
+}
+
+template StatusCode MockVehicleHardware::handleRequests<GetValueRequest, GetValueResult>(
+        const char* functionName,
+        std::shared_ptr<const std::function<void(std::vector<GetValueResult>)>> callback,
+        const std::vector<GetValueRequest>& requests,
+        std::list<std::vector<GetValueRequest>>* storedRequests,
+        std::list<std::vector<GetValueResult>>* storedResponses) const;
+
+template StatusCode MockVehicleHardware::handleRequests<SetValueRequest, SetValueResult>(
+        const char* functionName,
+        std::shared_ptr<const std::function<void(std::vector<SetValueResult>)>> callback,
+        const std::vector<SetValueRequest>& requests,
+        std::list<std::vector<SetValueRequest>>* storedRequests,
+        std::list<std::vector<SetValueResult>>* storedResponses) const;
+
 struct PropConfigCmp {
     bool operator()(const VehiclePropConfig& a, const VehiclePropConfig& b) const {
         return (a.prop < b.prop);
     }
 } propConfigCmp;
 
+struct SetValuesInvalidRequestTestCase {
+    std::string name;
+    VehiclePropValue request;
+    StatusCode expectedStatus;
+};
+
+std::vector<SetValuesInvalidRequestTestCase> getSetValuesInvalidRequestTestCases() {
+    return {{
+                    .name = "config_not_found",
+                    .request =
+                            {
+                                    // No config for INVALID_PROP_ID.
+                                    .prop = INVALID_PROP_ID,
+                            },
+                    .expectedStatus = StatusCode::INVALID_ARG,
+            },
+            {
+                    .name = "invalid_prop_value",
+                    .request =
+                            {
+                                    .prop = testInt32VecProp(0),
+                                    // No int32Values for INT32_VEC property.
+                                    .value.int32Values = {},
+                            },
+                    .expectedStatus = StatusCode::INVALID_ARG,
+            },
+            {
+                    .name = "value_out_of_range",
+                    .request =
+                            {
+                                    .prop = testInt32VecProp(0),
+                                    // We configured the range to be 0-100.
+                                    .value.int32Values = {0, -1},
+                            },
+                    .expectedStatus = StatusCode::INVALID_ARG,
+            },
+            {
+                    .name = "invalid_area",
+                    .request =
+                            {
+                                    .prop = INT32_WINDOW_PROP,
+                                    .value.int32Values = {0},
+                                    // Only ROW_1_LEFT is allowed.
+                                    .areaId = toInt(VehicleAreaWindow::ROW_1_RIGHT),
+                            },
+                    .expectedStatus = StatusCode::INVALID_ARG,
+            }};
+}
+
 }  // namespace
 
-TEST(DefaultVehicleHalTest, testGetAllPropConfigsSmall) {
+class DefaultVehicleHalTest : public ::testing::Test {
+  public:
+    void SetUp() override {
+        auto hardware = std::make_unique<MockVehicleHardware>();
+        std::vector<VehiclePropConfig> testConfigs;
+        for (size_t i = 0; i < 10000; i++) {
+            testConfigs.push_back(VehiclePropConfig{
+                    .prop = testInt32VecProp(i),
+                    .areaConfigs =
+                            {
+                                    {
+                                            .areaId = 0,
+                                            .minInt32Value = 0,
+                                            .maxInt32Value = 100,
+                                    },
+                            },
+            });
+        }
+        testConfigs.push_back(
+                VehiclePropConfig{.prop = INT32_WINDOW_PROP,
+                                  .areaConfigs = {{
+                                          .areaId = toInt(VehicleAreaWindow::ROW_1_LEFT),
+                                          .minInt32Value = 0,
+                                          .maxInt32Value = 100,
+                                  }}});
+        hardware->setPropertyConfigs(testConfigs);
+        mHardwarePtr = hardware.get();
+        mVhal = ndk::SharedRefBase::make<DefaultVehicleHal>(std::move(hardware));
+        mVhalClient = IVehicle::fromBinder(mVhal->asBinder());
+        mCallback = ndk::SharedRefBase::make<MockVehicleCallback>();
+        mCallbackClient = IVehicleCallback::fromBinder(mCallback->asBinder());
+    }
+
+    void TearDown() override {
+        ASSERT_EQ(countPendingRequests(), static_cast<size_t>(0))
+                << "must have no pending requests when test finishes";
+    }
+
+    MockVehicleHardware* getHardware() { return mHardwarePtr; }
+
+    std::shared_ptr<IVehicle> getClient() { return mVhal; }
+
+    std::shared_ptr<IVehicleCallback> getCallbackClient() { return mCallbackClient; }
+
+    MockVehicleCallback* getCallback() { return mCallback.get(); }
+
+    void setTimeout(int64_t timeoutInNano) { mVhal->setTimeout(timeoutInNano); }
+
+    size_t countPendingRequests() { return mVhal->mPendingRequestPool->countPendingRequests(); }
+
+    std::shared_ptr<PendingRequestPool> getPool() { return mVhal->mPendingRequestPool; }
+
+    static Result<void> getValuesTestCases(size_t size, GetValueRequests& requests,
+                                           std::vector<GetValueResult>& expectedResults,
+                                           std::vector<GetValueRequest>& expectedHardwareRequests) {
+        expectedHardwareRequests.clear();
+        for (size_t i = 0; i < size; i++) {
+            int64_t requestId = static_cast<int64_t>(i);
+            int32_t propId = testInt32VecProp(i);
+            expectedHardwareRequests.push_back(GetValueRequest{
+                    .prop =
+                            VehiclePropValue{
+                                    .prop = propId,
+                            },
+                    .requestId = requestId,
+            });
+            expectedResults.push_back(GetValueResult{
+                    .requestId = requestId,
+                    .status = StatusCode::OK,
+                    .prop =
+                            VehiclePropValue{
+                                    .prop = propId,
+                                    .value.int32Values = {1, 2, 3, 4},
+                            },
+            });
+        }
+
+        requests.payloads = expectedHardwareRequests;
+        auto result = LargeParcelableBase::parcelableToStableLargeParcelable(requests);
+        if (!result.ok()) {
+            return result.error();
+        }
+        if (result.value() != nullptr) {
+            requests.sharedMemoryFd = std::move(*result.value());
+            requests.payloads.clear();
+        }
+        return {};
+    }
+
+    static Result<void> setValuesTestCases(size_t size, SetValueRequests& requests,
+                                           std::vector<SetValueResult>& expectedResults,
+                                           std::vector<SetValueRequest>& expectedHardwareRequests) {
+        expectedHardwareRequests.clear();
+        for (size_t i = 0; i < size; i++) {
+            int64_t requestId = static_cast<int64_t>(i);
+            int32_t propId = testInt32VecProp(i);
+            expectedHardwareRequests.push_back(SetValueRequest{
+                    .value =
+                            VehiclePropValue{
+                                    .prop = propId,
+                                    .value.int32Values = {1, 2, 3, 4},
+                            },
+                    .requestId = requestId,
+            });
+            expectedResults.push_back(SetValueResult{
+                    .requestId = requestId,
+                    .status = StatusCode::OK,
+            });
+        }
+
+        requests.payloads = expectedHardwareRequests;
+        auto result = LargeParcelableBase::parcelableToStableLargeParcelable(requests);
+        if (!result.ok()) {
+            return result.error();
+        }
+        if (result.value() != nullptr) {
+            requests.payloads.clear();
+            requests.sharedMemoryFd = std::move(*result.value());
+        }
+        return {};
+    }
+
+    size_t countClients() {
+        std::scoped_lock<std::mutex> lockGuard(mVhal->mLock);
+        return mVhal->mGetValuesClients.size() + mVhal->mSetValuesClients.size();
+    }
+
+  private:
+    std::shared_ptr<DefaultVehicleHal> mVhal;
+    std::shared_ptr<IVehicle> mVhalClient;
+    MockVehicleHardware* mHardwarePtr;
+    std::shared_ptr<MockVehicleCallback> mCallback;
+    std::shared_ptr<IVehicleCallback> mCallbackClient;
+};
+
+TEST_F(DefaultVehicleHalTest, testGetAllPropConfigsSmall) {
     auto testConfigs = std::vector<VehiclePropConfig>({
             VehiclePropConfig{
                     .prop = 1,
@@ -125,14 +479,14 @@
     VehiclePropConfigs output;
     auto status = client->getAllPropConfigs(&output);
 
-    ASSERT_TRUE(status.isOk());
+    ASSERT_TRUE(status.isOk()) << "getAllPropConfigs failed: " << status.getMessage();
     ASSERT_THAT(output.payloads, WhenSortedBy(propConfigCmp, Eq(testConfigs)));
 }
 
-TEST(DefaultVehicleHalTest, testGetAllPropConfigsLarge) {
+TEST_F(DefaultVehicleHalTest, testGetAllPropConfigsLarge) {
     std::vector<VehiclePropConfig> testConfigs;
-    // 10000 VehiclePropConfig exceeds 4k memory limit, so it would be sent through shared memory.
-    for (size_t i = 0; i < 10000; i++) {
+    // 5000 VehiclePropConfig exceeds 4k memory limit, so it would be sent through shared memory.
+    for (size_t i = 0; i < 5000; i++) {
         testConfigs.push_back(VehiclePropConfig{
                 .prop = static_cast<int32_t>(i),
         });
@@ -146,14 +500,474 @@
     VehiclePropConfigs output;
     auto status = client->getAllPropConfigs(&output);
 
-    ASSERT_TRUE(status.isOk());
+    ASSERT_TRUE(status.isOk()) << "getAllPropConfigs failed: " << status.getMessage();
     ASSERT_TRUE(output.payloads.empty());
-    Result<std::optional<std::vector<VehiclePropConfig>>> result =
-            LargeParcelableBase::stableLargeParcelableToParcelableVector<VehiclePropConfig>(
-                    output.sharedMemoryFd);
-    ASSERT_TRUE(result.ok());
-    ASSERT_TRUE(result.value().has_value());
-    ASSERT_EQ(result.value().value(), testConfigs);
+    auto result = LargeParcelableBase::stableLargeParcelableToParcelable(output);
+    ASSERT_TRUE(result.ok()) << "failed to parse result shared memory file: "
+                             << result.error().message();
+    ASSERT_EQ(result.value().getObject()->payloads, testConfigs);
+}
+
+TEST_F(DefaultVehicleHalTest, testGetValuesSmall) {
+    GetValueRequests requests;
+    std::vector<GetValueResult> expectedResults;
+    std::vector<GetValueRequest> expectedHardwareRequests;
+
+    ASSERT_TRUE(getValuesTestCases(10, requests, expectedResults, expectedHardwareRequests).ok());
+
+    getHardware()->addGetValueResponses(expectedResults);
+
+    auto status = getClient()->getValues(getCallbackClient(), requests);
+
+    ASSERT_TRUE(status.isOk()) << "getValues failed: " << status.getMessage();
+
+    EXPECT_EQ(getHardware()->nextGetValueRequests(), expectedHardwareRequests)
+            << "requests to hardware mismatch";
+
+    auto maybeGetValueResults = getCallback()->nextGetValueResults();
+    ASSERT_TRUE(maybeGetValueResults.has_value()) << "no results in callback";
+    EXPECT_EQ(maybeGetValueResults.value().payloads, expectedResults) << "results mismatch";
+    EXPECT_EQ(countClients(), static_cast<size_t>(1));
+}
+
+TEST_F(DefaultVehicleHalTest, testGetValuesLarge) {
+    GetValueRequests requests;
+    std::vector<GetValueResult> expectedResults;
+    std::vector<GetValueRequest> expectedHardwareRequests;
+
+    ASSERT_TRUE(getValuesTestCases(5000, requests, expectedResults, expectedHardwareRequests).ok())
+            << "requests to hardware mismatch";
+    ;
+
+    getHardware()->addGetValueResponses(expectedResults);
+
+    auto status = getClient()->getValues(getCallbackClient(), requests);
+
+    ASSERT_TRUE(status.isOk()) << "getValues failed: " << status.getMessage();
+
+    EXPECT_EQ(getHardware()->nextGetValueRequests(), expectedHardwareRequests);
+
+    auto maybeGetValueResults = getCallback()->nextGetValueResults();
+    ASSERT_TRUE(maybeGetValueResults.has_value()) << "no results in callback";
+    const GetValueResults& getValueResults = maybeGetValueResults.value();
+    ASSERT_TRUE(getValueResults.payloads.empty())
+            << "payload should be empty, shared memory file should be used";
+
+    auto result = LargeParcelableBase::stableLargeParcelableToParcelable(getValueResults);
+    ASSERT_TRUE(result.ok()) << "failed to parse shared memory file";
+    ASSERT_EQ(result.value().getObject()->payloads, expectedResults) << "results mismatch";
+    EXPECT_EQ(countClients(), static_cast<size_t>(1));
+}
+
+TEST_F(DefaultVehicleHalTest, testGetValuesErrorFromHardware) {
+    GetValueRequests requests;
+    std::vector<GetValueResult> expectedResults;
+    std::vector<GetValueRequest> expectedHardwareRequests;
+
+    ASSERT_TRUE(getValuesTestCases(10, requests, expectedResults, expectedHardwareRequests).ok());
+
+    getHardware()->setStatus("getValues", StatusCode::INTERNAL_ERROR);
+
+    auto status = getClient()->getValues(getCallbackClient(), requests);
+
+    ASSERT_FALSE(status.isOk()) << "expect getValues to fail when hardware returns error";
+    ASSERT_EQ(status.getServiceSpecificError(), toInt(StatusCode::INTERNAL_ERROR));
+}
+
+TEST_F(DefaultVehicleHalTest, testGetValuesInvalidLargeParcelableInput) {
+    GetValueRequests requests;
+    requests.sharedMemoryFd = ScopedFileDescriptor(0);
+
+    auto status = getClient()->getValues(getCallbackClient(), requests);
+
+    ASSERT_FALSE(status.isOk()) << "expect getValues to fail when input parcelable is not valid";
+    ASSERT_EQ(status.getServiceSpecificError(), toInt(StatusCode::INVALID_ARG));
+}
+
+TEST_F(DefaultVehicleHalTest, testGetValuesFinishBeforeTimeout) {
+    // timeout: 0.1s
+    int64_t timeout = 100000000;
+    setTimeout(timeout);
+
+    GetValueRequests requests;
+    std::vector<GetValueResult> expectedResults;
+    std::vector<GetValueRequest> expectedHardwareRequests;
+
+    ASSERT_TRUE(getValuesTestCases(10, requests, expectedResults, expectedHardwareRequests).ok());
+
+    // The response would be returned after 0.05s.
+    getHardware()->setSleepTime(timeout / 2);
+    getHardware()->addGetValueResponses(expectedResults);
+
+    auto status = getClient()->getValues(getCallbackClient(), requests);
+
+    ASSERT_TRUE(status.isOk()) << "getValues failed: " << status.getMessage();
+
+    // Wait for the response.
+    std::this_thread::sleep_for(std::chrono::nanoseconds(timeout));
+
+    auto maybeGetValueResults = getCallback()->nextGetValueResults();
+    ASSERT_TRUE(maybeGetValueResults.has_value()) << "no results in callback";
+    EXPECT_EQ(maybeGetValueResults.value().payloads, expectedResults) << "results mismatch";
+    ASSERT_FALSE(getCallback()->nextGetValueResults().has_value()) << "more results than expected";
+}
+
+TEST_F(DefaultVehicleHalTest, testGetValuesFinishAfterTimeout) {
+    // timeout: 0.1s
+    int64_t timeout = 100000000;
+    setTimeout(timeout);
+
+    GetValueRequests requests;
+    std::vector<GetValueResult> expectedResults;
+    std::vector<GetValueRequest> expectedHardwareRequests;
+
+    ASSERT_TRUE(getValuesTestCases(10, requests, expectedResults, expectedHardwareRequests).ok());
+
+    // The response would be returned after 0.2s.
+    getHardware()->setSleepTime(timeout * 2);
+    getHardware()->addGetValueResponses(expectedResults);
+
+    auto status = getClient()->getValues(getCallbackClient(), requests);
+
+    ASSERT_TRUE(status.isOk()) << "getValues failed: " << status.getMessage();
+
+    // Wait for the response.
+    std::this_thread::sleep_for(std::chrono::nanoseconds(timeout * 5));
+
+    for (size_t i = 0; i < expectedResults.size(); i++) {
+        expectedResults[i] = {
+                .requestId = expectedResults[i].requestId,
+                .status = StatusCode::TRY_AGAIN,
+                .prop = std::nullopt,
+        };
+    }
+
+    auto maybeGetValueResults = getCallback()->nextGetValueResults();
+    ASSERT_TRUE(maybeGetValueResults.has_value()) << "no results in callback";
+    ASSERT_THAT(maybeGetValueResults.value().payloads, UnorderedElementsAreArray(expectedResults))
+            << "results mismatch, expect TRY_AGAIN error.";
+    ASSERT_FALSE(getCallback()->nextGetValueResults().has_value()) << "more results than expected";
+}
+
+TEST_F(DefaultVehicleHalTest, testGetValuesDuplicateRequestIdsInTwoRequests) {
+    // timeout: 0.1s
+    int64_t timeout = 100000000;
+    setTimeout(timeout);
+
+    GetValueRequests requests;
+    std::vector<GetValueResult> expectedResults;
+    std::vector<GetValueRequest> expectedHardwareRequests;
+
+    ASSERT_TRUE(getValuesTestCases(1, requests, expectedResults, expectedHardwareRequests).ok());
+
+    getHardware()->setSleepTime(timeout * 2);
+    getHardware()->addGetValueResponses(expectedResults);
+
+    auto status = getClient()->getValues(getCallbackClient(), requests);
+
+    ASSERT_TRUE(status.isOk()) << "getValues failed: " << status.getMessage();
+
+    // Use the same request ID again.
+    status = getClient()->getValues(getCallbackClient(), requests);
+
+    ASSERT_FALSE(status.isOk())
+            << "Use the same request ID before the previous request finishes must fail";
+
+    // Wait for the request to finish.
+    std::this_thread::sleep_for(std::chrono::nanoseconds(timeout * 5));
+}
+
+TEST_F(DefaultVehicleHalTest, testGetValuesDuplicateRequestIdsInOneRequest) {
+    GetValueRequests requests = {.payloads = {
+                                         {
+                                                 .requestId = 0,
+                                                 .prop =
+                                                         VehiclePropValue{
+                                                                 .prop = testInt32VecProp(0),
+                                                         },
+                                         },
+                                         {
+                                                 .requestId = 0,
+                                                 .prop =
+                                                         VehiclePropValue{
+                                                                 .prop = testInt32VecProp(1),
+                                                         },
+                                         },
+                                 }};
+
+    auto status = getClient()->getValues(getCallbackClient(), requests);
+
+    ASSERT_FALSE(status.isOk()) << "duplicate Ids in one request must fail";
+}
+
+TEST_F(DefaultVehicleHalTest, testGetValuesDuplicateRequestProps) {
+    GetValueRequests requests = {.payloads = {
+                                         {
+                                                 .requestId = 0,
+                                                 .prop =
+                                                         VehiclePropValue{
+                                                                 .prop = testInt32VecProp(0),
+                                                         },
+                                         },
+                                         {
+                                                 .requestId = 1,
+                                                 .prop =
+                                                         VehiclePropValue{
+                                                                 .prop = testInt32VecProp(0),
+                                                         },
+                                         },
+                                 }};
+
+    auto status = getClient()->getValues(getCallbackClient(), requests);
+
+    ASSERT_FALSE(status.isOk()) << "duplicate request properties in one request must fail";
+}
+
+TEST_F(DefaultVehicleHalTest, testSetValuesSmall) {
+    SetValueRequests requests;
+    std::vector<SetValueResult> expectedResults;
+    std::vector<SetValueRequest> expectedHardwareRequests;
+
+    ASSERT_TRUE(setValuesTestCases(10, requests, expectedResults, expectedHardwareRequests).ok());
+
+    getHardware()->addSetValueResponses(expectedResults);
+
+    auto status = getClient()->setValues(getCallbackClient(), requests);
+
+    ASSERT_TRUE(status.isOk()) << "setValues failed: " << status.getMessage();
+
+    EXPECT_EQ(getHardware()->nextSetValueRequests(), expectedHardwareRequests)
+            << "requests to hardware mismatch";
+
+    auto maybeSetValueResults = getCallback()->nextSetValueResults();
+    ASSERT_TRUE(maybeSetValueResults.has_value()) << "no results in callback";
+    ASSERT_EQ(maybeSetValueResults.value().payloads, expectedResults) << "results mismatch";
+    EXPECT_EQ(countClients(), static_cast<size_t>(1));
+}
+
+TEST_F(DefaultVehicleHalTest, testSetValuesLarge) {
+    SetValueRequests requests;
+    std::vector<SetValueResult> expectedResults;
+    std::vector<SetValueRequest> expectedHardwareRequests;
+
+    ASSERT_TRUE(setValuesTestCases(5000, requests, expectedResults, expectedHardwareRequests).ok());
+
+    getHardware()->addSetValueResponses(expectedResults);
+
+    auto status = getClient()->setValues(getCallbackClient(), requests);
+
+    ASSERT_TRUE(status.isOk()) << "setValues failed: " << status.getMessage();
+
+    EXPECT_EQ(getHardware()->nextSetValueRequests(), expectedHardwareRequests)
+            << "requests to hardware mismatch";
+
+    auto maybeSetValueResults = getCallback()->nextSetValueResults();
+    ASSERT_TRUE(maybeSetValueResults.has_value()) << "no results in callback";
+    const SetValueResults& setValueResults = maybeSetValueResults.value();
+    ASSERT_TRUE(setValueResults.payloads.empty())
+            << "payload should be empty, shared memory file should be used";
+
+    auto result = LargeParcelableBase::stableLargeParcelableToParcelable(setValueResults);
+    ASSERT_TRUE(result.ok()) << "failed to parse shared memory file";
+    ASSERT_EQ(result.value().getObject()->payloads, expectedResults) << "results mismatch";
+    EXPECT_EQ(countClients(), static_cast<size_t>(1));
+}
+
+class SetValuesInvalidRequestTest
+    : public DefaultVehicleHalTest,
+      public testing::WithParamInterface<SetValuesInvalidRequestTestCase> {};
+
+INSTANTIATE_TEST_SUITE_P(
+        SetValuesInvalidRequestTests, SetValuesInvalidRequestTest,
+        ::testing::ValuesIn(getSetValuesInvalidRequestTestCases()),
+        [](const testing::TestParamInfo<SetValuesInvalidRequestTest::ParamType>& info) {
+            return info.param.name;
+        });
+
+TEST_P(SetValuesInvalidRequestTest, testSetValuesInvalidRequest) {
+    SetValuesInvalidRequestTestCase tc = GetParam();
+    std::vector<SetValueResult> expectedHardwareResults{
+            SetValueResult{
+                    .requestId = 1,
+                    .status = StatusCode::OK,
+            },
+    };
+    getHardware()->addSetValueResponses(expectedHardwareResults);
+
+    SetValueRequests requests;
+    SetValueRequest invalidRequest{
+            .requestId = 0,
+            .value = tc.request,
+    };
+    SetValueRequest normalRequest{.requestId = 1,
+                                  .value = {
+                                          .prop = testInt32VecProp(0),
+                                          .value.int32Values = {0},
+                                  }};
+    requests.payloads = {invalidRequest, normalRequest};
+    auto status = getClient()->setValues(getCallbackClient(), requests);
+
+    ASSERT_TRUE(status.isOk()) << "setValues failed: " << status.getMessage();
+
+    EXPECT_EQ(getHardware()->nextSetValueRequests(), std::vector<SetValueRequest>({normalRequest}))
+            << "requests to hardware mismatch";
+
+    auto maybeSetValueResults = getCallback()->nextSetValueResults();
+    ASSERT_TRUE(maybeSetValueResults.has_value()) << "no results in callback";
+    EXPECT_EQ(maybeSetValueResults.value().payloads, std::vector<SetValueResult>({
+                                                             {
+                                                                     .requestId = 0,
+                                                                     .status = tc.expectedStatus,
+                                                             },
+                                                     }))
+            << "invalid argument result mismatch";
+
+    maybeSetValueResults = getCallback()->nextSetValueResults();
+    ASSERT_TRUE(maybeSetValueResults.has_value()) << "no results from hardware in callback";
+    EXPECT_EQ(maybeSetValueResults.value().payloads, expectedHardwareResults)
+            << "results from hardware mismatch";
+}
+
+TEST_F(DefaultVehicleHalTest, testSetValuesFinishBeforeTimeout) {
+    // timeout: 0.1s
+    int64_t timeout = 100000000;
+    setTimeout(timeout);
+
+    SetValueRequests requests;
+    std::vector<SetValueResult> expectedResults;
+    std::vector<SetValueRequest> expectedHardwareRequests;
+
+    ASSERT_TRUE(setValuesTestCases(10, requests, expectedResults, expectedHardwareRequests).ok());
+
+    // The response would be returned after 0.05s.
+    getHardware()->setSleepTime(timeout / 2);
+    getHardware()->addSetValueResponses(expectedResults);
+
+    auto status = getClient()->setValues(getCallbackClient(), requests);
+
+    ASSERT_TRUE(status.isOk()) << "setValues failed: " << status.getMessage();
+
+    // Wait for the response.
+    std::this_thread::sleep_for(std::chrono::nanoseconds(timeout));
+
+    auto maybeSetValueResults = getCallback()->nextSetValueResults();
+    ASSERT_TRUE(maybeSetValueResults.has_value()) << "no results in callback";
+    EXPECT_EQ(maybeSetValueResults.value().payloads, expectedResults) << "results mismatch";
+    ASSERT_FALSE(getCallback()->nextSetValueResults().has_value()) << "more results than expected";
+}
+
+TEST_F(DefaultVehicleHalTest, testSetValuesFinishAfterTimeout) {
+    // timeout: 0.1s
+    int64_t timeout = 100000000;
+    setTimeout(timeout);
+
+    SetValueRequests requests;
+    std::vector<SetValueResult> expectedResults;
+    std::vector<SetValueRequest> expectedHardwareRequests;
+
+    ASSERT_TRUE(setValuesTestCases(10, requests, expectedResults, expectedHardwareRequests).ok());
+
+    // The response would be returned after 0.2s.
+    getHardware()->setSleepTime(timeout * 2);
+    getHardware()->addSetValueResponses(expectedResults);
+
+    auto status = getClient()->setValues(getCallbackClient(), requests);
+
+    ASSERT_TRUE(status.isOk()) << "setValues failed: " << status.getMessage();
+
+    // Wait for the response.
+    std::this_thread::sleep_for(std::chrono::nanoseconds(timeout * 5));
+
+    for (size_t i = 0; i < expectedResults.size(); i++) {
+        expectedResults[i] = {
+                .requestId = expectedResults[i].requestId,
+                .status = StatusCode::TRY_AGAIN,
+        };
+    }
+
+    auto maybeSetValueResults = getCallback()->nextSetValueResults();
+    ASSERT_TRUE(maybeSetValueResults.has_value()) << "no results in callback";
+    ASSERT_THAT(maybeSetValueResults.value().payloads, UnorderedElementsAreArray(expectedResults))
+            << "results mismatch, expect TRY_AGAIN error.";
+    ASSERT_FALSE(getCallback()->nextSetValueResults().has_value()) << "more results than expected";
+}
+
+TEST_F(DefaultVehicleHalTest, testSetValuesDuplicateRequestIdsInTwoRequests) {
+    // timeout: 0.1s
+    int64_t timeout = 100000000;
+    setTimeout(timeout);
+
+    SetValueRequests requests;
+    std::vector<SetValueResult> expectedResults;
+    std::vector<SetValueRequest> expectedHardwareRequests;
+
+    ASSERT_TRUE(setValuesTestCases(1, requests, expectedResults, expectedHardwareRequests).ok());
+
+    getHardware()->setSleepTime(timeout * 2);
+    getHardware()->addSetValueResponses(expectedResults);
+
+    auto status = getClient()->setValues(getCallbackClient(), requests);
+
+    ASSERT_TRUE(status.isOk()) << "setValues failed: " << status.getMessage();
+
+    // Use the same request ID again.
+    status = getClient()->setValues(getCallbackClient(), requests);
+
+    ASSERT_FALSE(status.isOk())
+            << "Use the same request ID before the previous request finishes must fail";
+
+    // Wait for the request to finish.
+    std::this_thread::sleep_for(std::chrono::nanoseconds(timeout * 5));
+}
+
+TEST_F(DefaultVehicleHalTest, testSetValuesDuplicateRequestIdsInOneRequest) {
+    SetValueRequests requests = {.payloads = {
+                                         {
+                                                 .requestId = 0,
+                                                 .value =
+                                                         VehiclePropValue{
+                                                                 .prop = testInt32VecProp(0),
+                                                                 .value.int32Values = {0},
+                                                         },
+                                         },
+                                         {
+                                                 .requestId = 0,
+                                                 .value =
+                                                         VehiclePropValue{
+                                                                 .prop = testInt32VecProp(1),
+                                                                 .value.int32Values = {0},
+                                                         },
+                                         },
+                                 }};
+
+    auto status = getClient()->setValues(getCallbackClient(), requests);
+
+    ASSERT_FALSE(status.isOk()) << "duplicate Ids in one request must fail";
+}
+
+TEST_F(DefaultVehicleHalTest, testSetValuesDuplicateRequestProps) {
+    SetValueRequests requests = {.payloads = {
+                                         {
+                                                 .requestId = 0,
+                                                 .value =
+                                                         VehiclePropValue{
+                                                                 .prop = testInt32VecProp(0),
+                                                                 .value.int32Values = {0},
+                                                         },
+                                         },
+                                         {
+                                                 .requestId = 1,
+                                                 .value =
+                                                         VehiclePropValue{
+                                                                 .prop = testInt32VecProp(0),
+                                                                 .value.int32Values = {0},
+                                                         },
+                                         },
+                                 }};
+
+    auto status = getClient()->setValues(getCallbackClient(), requests);
+
+    ASSERT_FALSE(status.isOk()) << "duplicate request properties in one request must fail";
 }
 
 }  // namespace vehicle
diff --git a/automotive/vehicle/aidl/impl/vhal/test/PendingRequestPoolTest.cpp b/automotive/vehicle/aidl/impl/vhal/test/PendingRequestPoolTest.cpp
new file mode 100644
index 0000000..9c9e4b9
--- /dev/null
+++ b/automotive/vehicle/aidl/impl/vhal/test/PendingRequestPoolTest.cpp
@@ -0,0 +1,274 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "PendingRequestPool.h"
+
+#include <VehicleHalTypes.h>
+#include <VehicleUtils.h>
+
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+
+#include <unordered_set>
+#include <vector>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace vehicle {
+
+using ::aidl::android::hardware::automotive::vehicle::StatusCode;
+
+using ::testing::ElementsAre;
+using ::testing::UnorderedElementsAre;
+using ::testing::WhenSorted;
+
+class PendingRequestPoolTest : public ::testing::Test {
+  public:
+    void SetUp() override { mPool = std::make_unique<PendingRequestPool>(TEST_TIMEOUT); }
+
+    void TearDown() override {
+        if (mPool != nullptr) {
+            ASSERT_EQ(mPool->countPendingRequests(getTestClientId()), static_cast<size_t>(0))
+                    << "at least one pending request still exists in the pool when finish";
+        }
+    }
+
+    PendingRequestPool* getPool() { return mPool.get(); }
+
+    void destroyPool() { mPool.reset(); }
+
+    int64_t getTimeout() { return TEST_TIMEOUT; }
+
+    const void* getTestClientId() { return reinterpret_cast<const void*>(0); }
+
+  private:
+    // Test timeout is 0.1s.
+    static const int64_t TEST_TIMEOUT = 100000000;
+
+    std::unique_ptr<PendingRequestPool> mPool;
+};
+
+TEST_F(PendingRequestPoolTest, testFinishAllRequests) {
+    std::mutex lock;
+    std::vector<int64_t> timeoutRequestIds;
+
+    std::unordered_set<int64_t> requestIds;
+    for (int64_t i = 0; i < 10; i++) {
+        requestIds.insert(i);
+    }
+
+    auto callback = std::make_shared<PendingRequestPool::TimeoutCallbackFunc>(
+            [&lock, &timeoutRequestIds](const std::unordered_set<int64_t>& requests) {
+                std::scoped_lock<std::mutex> lockGuard(lock);
+                for (int64_t request : requests) {
+                    timeoutRequestIds.push_back(request);
+                }
+            });
+
+    ASSERT_RESULT_OK(getPool()->addRequests(getTestClientId(), requestIds, callback));
+
+    for (int64_t i = 0; i < 10; i++) {
+        ASSERT_TRUE(getPool()->isRequestPending(getTestClientId(), i));
+    }
+
+    for (int64_t i = 0; i < 10; i++) {
+        ASSERT_THAT(getPool()->tryFinishRequests(getTestClientId(), {i}), UnorderedElementsAre(i));
+    }
+
+    for (int64_t i = 0; i < 10; i++) {
+        ASSERT_FALSE(getPool()->isRequestPending(getTestClientId(), i));
+    }
+}
+
+TEST_F(PendingRequestPoolTest, testFinishHalfOfRequest) {
+    int64_t timeout = getTimeout();
+    std::mutex lock;
+    std::vector<int64_t> timeoutRequestIds;
+
+    std::unordered_set<int64_t> requestIds;
+    for (int64_t i = 0; i < 10; i++) {
+        requestIds.insert(i);
+    }
+
+    auto callback = std::make_shared<PendingRequestPool::TimeoutCallbackFunc>(
+            [&lock, &timeoutRequestIds](const std::unordered_set<int64_t>& requests) {
+                std::scoped_lock<std::mutex> lockGuard(lock);
+                for (int64_t request : requests) {
+                    timeoutRequestIds.push_back(request);
+                }
+            });
+
+    ASSERT_RESULT_OK(getPool()->addRequests(getTestClientId(), requestIds, callback));
+
+    for (int64_t i = 0; i < 10; i++) {
+        ASSERT_TRUE(getPool()->isRequestPending(getTestClientId(), i));
+    }
+
+    // Finish half of the requests.
+    requestIds.clear();
+    for (int64_t i = 0; i < 5; i++) {
+        requestIds.insert(i);
+    }
+
+    ASSERT_EQ(getPool()->tryFinishRequests(getTestClientId(), requestIds), requestIds);
+
+    for (int64_t i = 0; i < 5; i++) {
+        ASSERT_FALSE(getPool()->isRequestPending(getTestClientId(), i));
+    }
+    for (int64_t i = 5; i < 10; i++) {
+        ASSERT_TRUE(getPool()->isRequestPending(getTestClientId(), i));
+    }
+
+    // Wait until the unfinished requests timeout. The check interval is timeout, so at max we
+    // would wait an additional interval, which is 2 * timeout until the callback is called.
+    std::this_thread::sleep_for(2 * std::chrono::nanoseconds(timeout));
+
+    ASSERT_THAT(timeoutRequestIds, WhenSorted(ElementsAre(5, 6, 7, 8, 9)));
+}
+
+TEST_F(PendingRequestPoolTest, testFinishRequestTwice) {
+    std::mutex lock;
+    std::vector<int64_t> timeoutRequestIds;
+
+    auto callback = std::make_shared<PendingRequestPool::TimeoutCallbackFunc>(
+            [&lock, &timeoutRequestIds](const std::unordered_set<int64_t>& requests) {
+                std::scoped_lock<std::mutex> lockGuard(lock);
+                for (int64_t request : requests) {
+                    timeoutRequestIds.push_back(request);
+                }
+            });
+
+    ASSERT_RESULT_OK(getPool()->addRequests(getTestClientId(), {0}, callback));
+
+    ASSERT_THAT(getPool()->tryFinishRequests(getTestClientId(), {0}), UnorderedElementsAre(0))
+            << "failed to finish an added request";
+    ASSERT_TRUE(getPool()->tryFinishRequests(getTestClientId(), {0}).empty())
+            << "finish a request second time must return empty result";
+}
+
+TEST_F(PendingRequestPoolTest, testFinishRequestNonExistingId) {
+    std::mutex lock;
+    std::vector<int64_t> timeoutRequestIds;
+
+    auto callback = std::make_shared<PendingRequestPool::TimeoutCallbackFunc>(
+            [&lock, &timeoutRequestIds](const std::unordered_set<int64_t>& requests) {
+                std::scoped_lock<std::mutex> lockGuard(lock);
+                for (int64_t request : requests) {
+                    timeoutRequestIds.push_back(request);
+                }
+            });
+
+    ASSERT_RESULT_OK(getPool()->addRequests(getTestClientId(), {0, 1, 2}, callback));
+
+    ASSERT_THAT(getPool()->tryFinishRequests(getTestClientId(), {0, 1, 2, 3}),
+                UnorderedElementsAre(0, 1, 2))
+            << "finished request IDs must not contain non-existing request ID";
+    // Even though one of the request to finish does not exist, the rest of the requests should be
+    // finished.
+    ASSERT_EQ(getPool()->countPendingRequests(getTestClientId()), static_cast<size_t>(0))
+            << "requests not being finished correctly";
+}
+
+TEST_F(PendingRequestPoolTest, testFinishAfterTimeout) {
+    std::mutex lock;
+    std::vector<int64_t> timeoutRequestIds;
+
+    auto callback = std::make_shared<PendingRequestPool::TimeoutCallbackFunc>(
+            [&lock, &timeoutRequestIds](const std::unordered_set<int64_t>& requests) {
+                std::scoped_lock<std::mutex> lockGuard(lock);
+                for (int64_t request : requests) {
+                    timeoutRequestIds.push_back(request);
+                }
+            });
+
+    ASSERT_RESULT_OK(getPool()->addRequests(getTestClientId(), {0}, callback));
+
+    std::this_thread::sleep_for(2 * std::chrono::nanoseconds(getTimeout()));
+
+    ASSERT_TRUE(getPool()->tryFinishRequests(getTestClientId(), {0}).empty())
+            << "finish a request after timeout must do nothing";
+}
+
+TEST_F(PendingRequestPoolTest, testDestroyWithPendingRequests) {
+    std::mutex lock;
+    std::vector<int64_t> timeoutRequestIds;
+
+    auto callback = std::make_shared<PendingRequestPool::TimeoutCallbackFunc>(
+            [&lock, &timeoutRequestIds](const std::unordered_set<int64_t>& requests) {
+                std::scoped_lock<std::mutex> lockGuard(lock);
+                for (int64_t request : requests) {
+                    timeoutRequestIds.push_back(request);
+                }
+            });
+
+    ASSERT_RESULT_OK(getPool()->addRequests(getTestClientId(), {0}, callback));
+
+    destroyPool();
+
+    // Before the pool is destroyed, the pending requests should be notified as timeout.
+    ASSERT_THAT(timeoutRequestIds, UnorderedElementsAre(0))
+            << "timeout not triggered when the pool is destroyed";
+}
+
+TEST_F(PendingRequestPoolTest, testDuplicateRequestId) {
+    auto callback = std::make_shared<PendingRequestPool::TimeoutCallbackFunc>(
+            [](std::unordered_set<int64_t>) {});
+
+    ASSERT_RESULT_OK(getPool()->addRequests(getTestClientId(), {0}, callback));
+    ASSERT_FALSE(getPool()->addRequests(getTestClientId(), {1, 2, 0}, callback).ok())
+            << "adding duplicate request IDs must fail";
+
+    ASSERT_THAT(getPool()->tryFinishRequests(getTestClientId(), {0}), UnorderedElementsAre(0));
+}
+
+TEST_F(PendingRequestPoolTest, testSameRequestIdForDifferentClient) {
+    auto callback = std::make_shared<PendingRequestPool::TimeoutCallbackFunc>(
+            [](std::unordered_set<int64_t>) {});
+
+    ASSERT_RESULT_OK(getPool()->addRequests(reinterpret_cast<const void*>(0), {0}, callback));
+    ASSERT_RESULT_OK(getPool()->addRequests(reinterpret_cast<const void*>(1), {1, 2, 0}, callback));
+
+    ASSERT_THAT(getPool()->tryFinishRequests(reinterpret_cast<const void*>(0), {0}),
+                UnorderedElementsAre(0));
+    ASSERT_THAT(getPool()->tryFinishRequests(reinterpret_cast<const void*>(1), {1, 2, 0}),
+                UnorderedElementsAre(0, 1, 2));
+}
+
+TEST_F(PendingRequestPoolTest, testPendingRequestCountLimit) {
+    auto callback = std::make_shared<PendingRequestPool::TimeoutCallbackFunc>(
+            [](std::unordered_set<int64_t>) {});
+
+    std::unordered_set<int64_t> requests;
+
+    // MAX_PENDING_REQUEST_PER_CLIENT = 10000
+    for (size_t i = 0; i < 10000; i++) {
+        requests.insert(static_cast<int64_t>(i));
+    }
+    ASSERT_RESULT_OK(getPool()->addRequests(reinterpret_cast<const void*>(0), requests, callback));
+
+    auto result = getPool()->addRequests(reinterpret_cast<const void*>(0),
+                                         {static_cast<int64_t>(10000)}, callback);
+    ASSERT_FALSE(result.ok()) << "adding more pending requests than limit must fail";
+    ASSERT_EQ(result.error().code(), toInt(StatusCode::TRY_AGAIN));
+
+    getPool()->tryFinishRequests(reinterpret_cast<const void*>(0), requests);
+}
+
+}  // namespace vehicle
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/vehicle/aidl/impl/vhal/test/RecurrentTimerTest.cpp b/automotive/vehicle/aidl/impl/vhal/test/RecurrentTimerTest.cpp
new file mode 100644
index 0000000..d343cea
--- /dev/null
+++ b/automotive/vehicle/aidl/impl/vhal/test/RecurrentTimerTest.cpp
@@ -0,0 +1,192 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "RecurrentTimer.h"
+
+#include <android-base/thread_annotations.h>
+#include <gtest/gtest.h>
+
+#include <chrono>
+#include <memory>
+#include <mutex>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace vehicle {
+
+class RecurrentTimerTest : public ::testing::Test {
+  public:
+    std::shared_ptr<RecurrentTimer::Callback> getCallback(size_t token) {
+        return std::make_shared<RecurrentTimer::Callback>([this, token] {
+            std::scoped_lock<std::mutex> lockGuard(mLock);
+
+            mCallbacks.push_back(token);
+        });
+    }
+
+    std::vector<size_t> getCalledCallbacks() {
+        std::scoped_lock<std::mutex> lockGuard(mLock);
+        return mCallbacks;
+    }
+
+    void clearCalledCallbacks() {
+        std::scoped_lock<std::mutex> lockGuard(mLock);
+        mCallbacks.clear();
+    }
+
+    size_t countTimerCallbackQueue(RecurrentTimer* timer) {
+        std::scoped_lock<std::mutex> lockGuard(timer->mLock);
+        return timer->mCallbackQueue.size();
+    }
+
+  private:
+    std::mutex mLock;
+    std::vector<size_t> mCallbacks GUARDED_BY(mLock);
+};
+
+TEST_F(RecurrentTimerTest, testRegisterCallback) {
+    RecurrentTimer timer;
+    // 0.1s
+    int64_t interval = 100000000;
+
+    auto action = getCallback(0);
+    timer.registerTimerCallback(interval, action);
+
+    std::this_thread::sleep_for(std::chrono::seconds(1));
+
+    timer.unregisterTimerCallback(action);
+
+    // Theoretically trigger 10 times, but check for at least 9 times to be stable.
+    ASSERT_GE(getCalledCallbacks().size(), static_cast<size_t>(9));
+}
+
+TEST_F(RecurrentTimerTest, testRegisterUnregisterRegister) {
+    RecurrentTimer timer;
+    // 0.1s
+    int64_t interval = 100000000;
+
+    auto action = getCallback(0);
+    timer.registerTimerCallback(interval, action);
+
+    std::this_thread::sleep_for(std::chrono::milliseconds(200));
+
+    timer.unregisterTimerCallback(action);
+
+    std::this_thread::sleep_for(std::chrono::milliseconds(200));
+
+    clearCalledCallbacks();
+
+    timer.registerTimerCallback(interval, action);
+
+    std::this_thread::sleep_for(std::chrono::seconds(1));
+
+    // Theoretically trigger 10 times, but check for at least 9 times to be stable.
+    ASSERT_GE(getCalledCallbacks().size(), static_cast<size_t>(9));
+}
+
+TEST_F(RecurrentTimerTest, testDestroyTimerWithCallback) {
+    std::unique_ptr<RecurrentTimer> timer = std::make_unique<RecurrentTimer>();
+    // 0.1s
+    int64_t interval = 100000000;
+
+    auto action = getCallback(0);
+    timer->registerTimerCallback(interval, action);
+
+    std::this_thread::sleep_for(std::chrono::milliseconds(200));
+
+    timer.reset();
+
+    clearCalledCallbacks();
+
+    std::this_thread::sleep_for(std::chrono::milliseconds(200));
+
+    ASSERT_TRUE(getCalledCallbacks().empty());
+}
+
+TEST_F(RecurrentTimerTest, testRegisterMultipleCallbacks) {
+    RecurrentTimer timer;
+    // 0.1s
+    int64_t interval1 = 100000000;
+    auto action1 = getCallback(1);
+    timer.registerTimerCallback(interval1, action1);
+    // 0.05s
+    int64_t interval2 = 50000000;
+    auto action2 = getCallback(2);
+    timer.registerTimerCallback(interval2, action2);
+    // 0.03s
+    int64_t interval3 = 30000000;
+    auto action3 = getCallback(3);
+    timer.registerTimerCallback(interval3, action3);
+
+    std::this_thread::sleep_for(std::chrono::seconds(1));
+
+    timer.unregisterTimerCallback(action1);
+    timer.unregisterTimerCallback(action2);
+    timer.unregisterTimerCallback(action3);
+
+    size_t action1Count = 0;
+    size_t action2Count = 0;
+    size_t action3Count = 0;
+    for (size_t token : getCalledCallbacks()) {
+        if (token == 1) {
+            action1Count++;
+        }
+        if (token == 2) {
+            action2Count++;
+        }
+        if (token == 3) {
+            action3Count++;
+        }
+    }
+    // Theoretically trigger 10 times, but check for at least 9 times to be stable.
+    ASSERT_GE(action1Count, static_cast<size_t>(9));
+    // Theoretically trigger 20 times, but check for at least 15 times to be stable.
+    ASSERT_GE(action2Count, static_cast<size_t>(15));
+    // Theoretically trigger 33 times, but check for at least 25 times to be stable.
+    ASSERT_GE(action3Count, static_cast<size_t>(25));
+}
+
+TEST_F(RecurrentTimerTest, testRegisterSameCallbackMultipleTimes) {
+    RecurrentTimer timer;
+    // 0.02s
+    int64_t interval1 = 20000000;
+    // 0.01s
+    int64_t interval2 = 10000000;
+
+    auto action = getCallback(0);
+    for (int i = 0; i < 10; i++) {
+        timer.registerTimerCallback(interval1, action);
+        timer.registerTimerCallback(interval2, action);
+    }
+
+    clearCalledCallbacks();
+
+    std::this_thread::sleep_for(std::chrono::milliseconds(100));
+
+    // Theoretically trigger 10 times, but check for at least 9 times to be stable.
+    ASSERT_GE(getCalledCallbacks().size(), static_cast<size_t>(9));
+
+    timer.unregisterTimerCallback(action);
+
+    // Make sure there is no item in the callback queue.
+    ASSERT_EQ(countTimerCallbackQueue(&timer), static_cast<size_t>(0));
+}
+
+}  // namespace vehicle
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/vehicle/aidl/impl/vhal/test/SubscriptionManagerTest.cpp b/automotive/vehicle/aidl/impl/vhal/test/SubscriptionManagerTest.cpp
new file mode 100644
index 0000000..fa08d6c
--- /dev/null
+++ b/automotive/vehicle/aidl/impl/vhal/test/SubscriptionManagerTest.cpp
@@ -0,0 +1,483 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "SubscriptionManager.h"
+
+#include <VehicleHalTypes.h>
+
+#include <aidl/android/hardware/automotive/vehicle/BnVehicleCallback.h>
+#include <android-base/thread_annotations.h>
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+
+#include <float.h>
+#include <chrono>
+#include <list>
+#include <memory>
+#include <mutex>
+#include <thread>
+#include <vector>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace vehicle {
+
+using ::aidl::android::hardware::automotive::vehicle::BnVehicleCallback;
+using ::aidl::android::hardware::automotive::vehicle::GetValueResults;
+using ::aidl::android::hardware::automotive::vehicle::IVehicleCallback;
+using ::aidl::android::hardware::automotive::vehicle::SetValueResults;
+using ::aidl::android::hardware::automotive::vehicle::SubscribeOptions;
+using ::aidl::android::hardware::automotive::vehicle::VehiclePropErrors;
+using ::aidl::android::hardware::automotive::vehicle::VehiclePropValue;
+using ::aidl::android::hardware::automotive::vehicle::VehiclePropValues;
+using ::ndk::ScopedAStatus;
+using ::testing::ElementsAre;
+using ::testing::WhenSorted;
+
+class PropertyCallback final : public BnVehicleCallback {
+  public:
+    ScopedAStatus onGetValues(const GetValueResults&) override { return ScopedAStatus::ok(); }
+
+    ScopedAStatus onSetValues(const SetValueResults&) override { return ScopedAStatus::ok(); }
+
+    ScopedAStatus onPropertyEvent(const VehiclePropValues& values, int32_t) override {
+        std::scoped_lock<std::mutex> lockGuard(mLock);
+        for (const auto& value : values.payloads) {
+            mEvents.push_back(value);
+        }
+        return ScopedAStatus::ok();
+    }
+
+    ScopedAStatus onPropertySetError(const VehiclePropErrors&) override {
+        return ScopedAStatus::ok();
+    }
+
+    // Test functions.
+    std::list<VehiclePropValue> getEvents() {
+        std::scoped_lock<std::mutex> lockGuard(mLock);
+        return mEvents;
+    }
+
+    void clearEvents() {
+        std::scoped_lock<std::mutex> lockGuard(mLock);
+        mEvents.clear();
+    }
+
+  private:
+    std::mutex mLock;
+    std::list<VehiclePropValue> mEvents GUARDED_BY(mLock);
+};
+
+class SubscriptionManagerTest : public ::testing::Test {
+  public:
+    void SetUp() override {
+        mManager = std::make_unique<SubscriptionManager>(
+                [](const std::shared_ptr<IVehicleCallback>& callback,
+                   const VehiclePropValue& value) {
+                    callback->onPropertyEvent(
+                            VehiclePropValues{
+                                    .payloads = {value},
+                            },
+                            0);
+                });
+        mCallback = ::ndk::SharedRefBase::make<PropertyCallback>();
+        mCallbackClient = IVehicleCallback::fromBinder(mCallback->asBinder());
+    }
+
+    SubscriptionManager* getManager() { return mManager.get(); }
+
+    std::shared_ptr<IVehicleCallback> getCallbackClient() { return mCallbackClient; }
+
+    PropertyCallback* getCallback() { return mCallback.get(); }
+
+    std::list<VehiclePropValue> getEvents() { return getCallback()->getEvents(); }
+
+    void clearEvents() { return getCallback()->clearEvents(); }
+
+  private:
+    std::unique_ptr<SubscriptionManager> mManager;
+    std::shared_ptr<PropertyCallback> mCallback;
+    std::shared_ptr<IVehicleCallback> mCallbackClient;
+};
+
+TEST_F(SubscriptionManagerTest, testSubscribeGlobalContinuous) {
+    std::vector<SubscribeOptions> options = {{
+            .propId = 0,
+            .areaIds = {0},
+            .sampleRate = 10.0,
+    }};
+
+    auto result = getManager()->subscribe(getCallbackClient(), options, true);
+    ASSERT_TRUE(result.ok()) << "failed to subscribe: " << result.error().message();
+
+    std::this_thread::sleep_for(std::chrono::seconds(1));
+
+    // Theoretically trigger 10 times, but check for at least 9 times to be stable.
+    ASSERT_GE(getEvents().size(), static_cast<size_t>(9));
+    EXPECT_EQ(getEvents().back().prop, 0);
+    EXPECT_EQ(getEvents().back().areaId, 0);
+}
+
+TEST_F(SubscriptionManagerTest, testSubscribeMultiplePropsGlobalContinuous) {
+    std::vector<SubscribeOptions> options = {{
+                                                     .propId = 0,
+                                                     .areaIds = {0},
+                                                     .sampleRate = 10.0,
+                                             },
+                                             {
+                                                     .propId = 1,
+                                                     .areaIds = {0},
+                                                     .sampleRate = 20.0,
+                                             }};
+
+    auto result = getManager()->subscribe(getCallbackClient(), options, true);
+    ASSERT_TRUE(result.ok()) << "failed to subscribe: " << result.error().message();
+
+    std::this_thread::sleep_for(std::chrono::seconds(1));
+
+    size_t event0Count = 0;
+    size_t event1Count = 0;
+
+    for (const auto& event : getEvents()) {
+        if (event.prop == 0) {
+            event0Count++;
+        } else {
+            event1Count++;
+        }
+    }
+
+    // Theoretically trigger 10 times, but check for at least 9 times to be stable.
+    EXPECT_GE(event0Count, static_cast<size_t>(9));
+    // Theoretically trigger 20 times, but check for at least 15 times to be stable.
+    EXPECT_GE(event1Count, static_cast<size_t>(15));
+}
+
+TEST_F(SubscriptionManagerTest, testOverrideSubscriptionContinuous) {
+    std::vector<SubscribeOptions> options = {{
+            .propId = 0,
+            .areaIds = {0},
+            .sampleRate = 20.0,
+    }};
+
+    auto result = getManager()->subscribe(getCallbackClient(), options, true);
+    ASSERT_TRUE(result.ok()) << "failed to subscribe: " << result.error().message();
+
+    // Override sample rate to be 10.0.
+    options[0].sampleRate = 10.0;
+    result = getManager()->subscribe(getCallbackClient(), options, true);
+    ASSERT_TRUE(result.ok()) << "failed to subscribe: " << result.error().message();
+
+    std::this_thread::sleep_for(std::chrono::seconds(1));
+
+    // Theoretically trigger 10 times, but check for at least 9 times to be stable.
+    EXPECT_GE(getEvents().size(), static_cast<size_t>(9));
+    EXPECT_LE(getEvents().size(), static_cast<size_t>(11));
+}
+
+TEST_F(SubscriptionManagerTest, testSubscribeMultipleAreasContinuous) {
+    std::vector<SubscribeOptions> options = {
+            {
+                    .propId = 0,
+                    .areaIds = {0, 1},
+                    .sampleRate = 10.0,
+            },
+    };
+
+    auto result = getManager()->subscribe(getCallbackClient(), options, true);
+    ASSERT_TRUE(result.ok()) << "failed to subscribe: " << result.error().message();
+
+    std::this_thread::sleep_for(std::chrono::seconds(1));
+
+    size_t area0Count = 0;
+    size_t area1Count = 0;
+
+    for (const auto& event : getEvents()) {
+        if (event.areaId == 0) {
+            area0Count++;
+        } else {
+            area1Count++;
+        }
+    }
+
+    // Theoretically trigger 10 times, but check for at least 9 times to be stable.
+    EXPECT_GE(area0Count, static_cast<size_t>(9));
+    // Theoretically trigger 10 times, but check for at least 9 times to be stable.
+    EXPECT_GE(area1Count, static_cast<size_t>(9));
+}
+
+TEST_F(SubscriptionManagerTest, testUnsubscribeGlobalContinuous) {
+    std::vector<SubscribeOptions> options = {{
+            .propId = 0,
+            .areaIds = {0},
+            .sampleRate = 10.0,
+    }};
+
+    auto result = getManager()->subscribe(getCallbackClient(), options, true);
+    ASSERT_TRUE(result.ok()) << "failed to subscribe: " << result.error().message();
+
+    result = getManager()->unsubscribe(getCallbackClient());
+    ASSERT_TRUE(result.ok()) << "failed to unsubscribe: " << result.error().message();
+
+    clearEvents();
+
+    std::this_thread::sleep_for(std::chrono::milliseconds(200));
+
+    // Theoretically trigger 10 times, but check for at least 9 times to be stable.
+    ASSERT_TRUE(getEvents().empty());
+}
+
+TEST_F(SubscriptionManagerTest, testUnsubscribeMultipleAreas) {
+    std::vector<SubscribeOptions> options = {
+            {
+                    .propId = 0,
+                    .areaIds = {0, 1, 2, 3, 4},
+                    .sampleRate = 10.0,
+            },
+            {
+                    .propId = 1,
+                    .areaIds = {0},
+                    .sampleRate = 10.0,
+            },
+    };
+
+    auto result = getManager()->subscribe(getCallbackClient(), options, true);
+    ASSERT_TRUE(result.ok()) << "failed to subscribe: " << result.error().message();
+
+    result = getManager()->unsubscribe(getCallbackClient(), std::vector<int32_t>({0}));
+    ASSERT_TRUE(result.ok()) << "failed to unsubscribe: " << result.error().message();
+
+    clearEvents();
+
+    std::this_thread::sleep_for(std::chrono::seconds(1));
+
+    // Theoretically trigger 10 times, but check for at least 9 times to be stable.
+    EXPECT_GE(getEvents().size(), static_cast<size_t>(9));
+
+    for (const auto& event : getEvents()) {
+        EXPECT_EQ(event.prop, 1);
+    }
+}
+
+TEST_F(SubscriptionManagerTest, testUnsubscribeByCallback) {
+    std::vector<SubscribeOptions> options = {
+            {
+                    .propId = 0,
+                    .areaIds = {0, 1, 2, 3, 4},
+                    .sampleRate = 10.0,
+            },
+            {
+                    .propId = 1,
+                    .areaIds = {0},
+                    .sampleRate = 10.0,
+            },
+    };
+
+    auto result = getManager()->subscribe(getCallbackClient(), options, true);
+    ASSERT_TRUE(result.ok()) << "failed to subscribe: " << result.error().message();
+
+    result = getManager()->unsubscribe(getCallbackClient());
+    ASSERT_TRUE(result.ok()) << "failed to unsubscribe: " << result.error().message();
+
+    clearEvents();
+
+    std::this_thread::sleep_for(std::chrono::seconds(1));
+
+    EXPECT_TRUE(getEvents().empty());
+}
+
+TEST_F(SubscriptionManagerTest, testUnsubscribeFailure) {
+    std::vector<SubscribeOptions> options = {
+            {
+                    .propId = 0,
+                    .areaIds = {0, 1, 2, 3, 4},
+            },
+            {
+                    .propId = 1,
+                    .areaIds = {0},
+            },
+    };
+
+    auto result = getManager()->subscribe(getCallbackClient(), options, false);
+    ASSERT_TRUE(result.ok()) << "failed to subscribe: " << result.error().message();
+
+    // Property ID: 2 was not subscribed.
+    result = getManager()->unsubscribe(getCallbackClient(), std::vector<int32_t>({0, 1, 2}));
+    ASSERT_FALSE(result.ok()) << "unsubscribe an unsubscribed property must fail";
+
+    // Since property 0 and property 1 was not unsubscribed successfully, we should be able to
+    // unsubscribe them again.
+    result = getManager()->unsubscribe(getCallbackClient(), std::vector<int32_t>({0, 1}));
+    ASSERT_TRUE(result.ok()) << "a failed unsubscription must not unsubscribe any properties"
+                             << result.error().message();
+}
+
+TEST_F(SubscriptionManagerTest, testSubscribeOnchange) {
+    std::vector<SubscribeOptions> options1 = {
+            {
+                    .propId = 0,
+                    .areaIds = {0, 1},
+            },
+            {
+                    .propId = 1,
+                    .areaIds = {0},
+            },
+    };
+    std::vector<SubscribeOptions> options2 = {
+            {
+                    .propId = 0,
+                    .areaIds = {0},
+            },
+    };
+
+    std::shared_ptr<IVehicleCallback> client1 = IVehicleCallback::fromBinder(
+            ::ndk::SharedRefBase::make<PropertyCallback>()->asBinder());
+    std::shared_ptr<IVehicleCallback> client2 = IVehicleCallback::fromBinder(
+            ::ndk::SharedRefBase::make<PropertyCallback>()->asBinder());
+    auto result = getManager()->subscribe(client1, options1, false);
+    ASSERT_TRUE(result.ok()) << "failed to subscribe: " << result.error().message();
+    result = getManager()->subscribe(client2, options2, false);
+    ASSERT_TRUE(result.ok()) << "failed to subscribe: " << result.error().message();
+
+    std::vector<VehiclePropValue> updatedValues = {
+            {
+                    .prop = 0,
+                    .areaId = 0,
+            },
+            {
+                    .prop = 0,
+                    .areaId = 1,
+            },
+            {
+                    .prop = 1,
+                    .areaId = 0,
+            },
+            {
+                    .prop = 1,
+                    .areaId = 1,
+            },
+    };
+    auto clients = getManager()->getSubscribedClients(updatedValues);
+
+    ASSERT_THAT(clients[client1],
+                WhenSorted(ElementsAre(&updatedValues[0], &updatedValues[1], &updatedValues[2])));
+    ASSERT_THAT(clients[client2], ElementsAre(&updatedValues[0]));
+}
+
+TEST_F(SubscriptionManagerTest, testSubscribeInvalidOption) {
+    std::vector<SubscribeOptions> options = {
+            {
+                    .propId = 0,
+                    .areaIds = {0, 1, 2, 3, 4},
+                    // invalid sample rate.
+                    .sampleRate = 0.0,
+            },
+            {
+                    .propId = 1,
+                    .areaIds = {0},
+                    .sampleRate = 10.0,
+            },
+    };
+
+    auto result = getManager()->subscribe(getCallbackClient(), options, true);
+    ASSERT_FALSE(result.ok()) << "subscribe with invalid sample rate must fail";
+    ASSERT_TRUE(getManager()
+                        ->getSubscribedClients({{
+                                                        .prop = 0,
+                                                        .areaId = 0,
+                                                },
+                                                {
+                                                        .prop = 1,
+                                                        .areaId = 0,
+                                                }})
+                        .empty())
+            << "no property should be subscribed if error is returned";
+}
+
+TEST_F(SubscriptionManagerTest, testSubscribeNoAreaIds) {
+    std::vector<SubscribeOptions> options = {
+            {
+                    .propId = 0,
+                    .areaIds = {},
+                    .sampleRate = 1.0,
+            },
+            {
+                    .propId = 1,
+                    .areaIds = {0},
+                    .sampleRate = 10.0,
+            },
+    };
+
+    auto result = getManager()->subscribe(getCallbackClient(), options, true);
+    ASSERT_FALSE(result.ok()) << "subscribe with invalid sample rate must fail";
+    ASSERT_TRUE(getManager()
+                        ->getSubscribedClients({{
+                                .prop = 1,
+                                .areaId = 0,
+                        }})
+                        .empty())
+            << "no property should be subscribed if error is returned";
+}
+
+TEST_F(SubscriptionManagerTest, testUnsubscribeOnchange) {
+    std::vector<SubscribeOptions> options = {
+            {
+                    .propId = 0,
+                    .areaIds = {0, 1},
+            },
+            {
+                    .propId = 1,
+                    .areaIds = {0},
+            },
+    };
+
+    auto result = getManager()->subscribe(getCallbackClient(), options, false);
+    ASSERT_TRUE(result.ok()) << "failed to subscribe: " << result.error().message();
+
+    result = getManager()->unsubscribe(getCallbackClient(), std::vector<int32_t>({0}));
+    ASSERT_TRUE(result.ok()) << "failed to unsubscribe: " << result.error().message();
+
+    std::vector<VehiclePropValue> updatedValues = {
+            {
+                    .prop = 0,
+                    .areaId = 0,
+            },
+            {
+                    .prop = 1,
+                    .areaId = 0,
+            },
+    };
+    auto clients = getManager()->getSubscribedClients(updatedValues);
+
+    ASSERT_THAT(clients[getCallbackClient()], ElementsAre(&updatedValues[1]));
+}
+
+TEST_F(SubscriptionManagerTest, testCheckSampleRateValid) {
+    ASSERT_TRUE(SubscriptionManager::checkSampleRate(1.0));
+}
+
+TEST_F(SubscriptionManagerTest, testCheckSampleRateInvalidTooSmall) {
+    ASSERT_FALSE(SubscriptionManager::checkSampleRate(FLT_MIN));
+}
+
+TEST_F(SubscriptionManagerTest, testCheckSampleRateInvalidZero) {
+    ASSERT_FALSE(SubscriptionManager::checkSampleRate(0));
+}
+
+}  // namespace vehicle
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/biometrics/common/aidl/aidl_api/android.hardware.biometrics.common/current/android/hardware/biometrics/common/OperationContext.aidl b/biometrics/common/aidl/aidl_api/android.hardware.biometrics.common/current/android/hardware/biometrics/common/OperationContext.aidl
new file mode 100644
index 0000000..3a6461e
--- /dev/null
+++ b/biometrics/common/aidl/aidl_api/android.hardware.biometrics.common/current/android/hardware/biometrics/common/OperationContext.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.biometrics.common;
+@VintfStability
+parcelable OperationContext {
+  int id = 0;
+  android.hardware.biometrics.common.OperationReason reason = android.hardware.biometrics.common.OperationReason.UNKNOWN;
+  boolean isAoD = false;
+  boolean isCrypto = false;
+}
diff --git a/biometrics/common/aidl/aidl_api/android.hardware.biometrics.common/current/android/hardware/biometrics/common/OperationReason.aidl b/biometrics/common/aidl/aidl_api/android.hardware.biometrics.common/current/android/hardware/biometrics/common/OperationReason.aidl
new file mode 100644
index 0000000..3da3a6a
--- /dev/null
+++ b/biometrics/common/aidl/aidl_api/android.hardware.biometrics.common/current/android/hardware/biometrics/common/OperationReason.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.biometrics.common;
+@Backing(type="byte") @VintfStability
+enum OperationReason {
+  UNKNOWN = 0,
+  BIOMETRIC_PROMPT = 1,
+  KEYGUARD = 2,
+}
diff --git a/biometrics/common/aidl/android/hardware/biometrics/common/OperationContext.aidl b/biometrics/common/aidl/android/hardware/biometrics/common/OperationContext.aidl
new file mode 100644
index 0000000..390e698
--- /dev/null
+++ b/biometrics/common/aidl/android/hardware/biometrics/common/OperationContext.aidl
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.biometrics.common;
+
+import android.hardware.biometrics.common.OperationReason;
+
+/**
+ * Additional context associated with an operation.
+ */
+@VintfStability
+parcelable OperationContext {
+    /**
+     * An identifier for the logical action that the user is engaged in. These identifiers are
+     * not guaranteed to be unique. However, the framework will not reuse identifiers within
+     * short periods of time so they can be made unique, if needed, by appending a timestamp.
+     *
+     * Zero if the reason is OperationReason.UNKNOWN.
+     */
+    int id = 0;
+
+    /**
+     * A logical reason for this operation.
+     *
+     * This should be interpreted as a hint to enable optimizations or tracing. The
+     * framework may choose to use OperationReason.UNKNOWN at any time based on the device's
+     * policy.
+     */
+    OperationReason reason = OperationReason.UNKNOWN;
+
+    /* Flag indicating that the display is in AoD mode. */
+    boolean isAoD = false;
+
+    /** Flag indicating that crypto was requested. */
+    boolean isCrypto = false;
+}
diff --git a/biometrics/common/aidl/android/hardware/biometrics/common/OperationReason.aidl b/biometrics/common/aidl/android/hardware/biometrics/common/OperationReason.aidl
new file mode 100644
index 0000000..abc25ed
--- /dev/null
+++ b/biometrics/common/aidl/android/hardware/biometrics/common/OperationReason.aidl
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.biometrics.common;
+
+@VintfStability
+@Backing(type="byte")
+enum OperationReason {
+    /**
+     * A normal operation without an explicit reason.
+     */
+    UNKNOWN,
+
+    /**
+     * An operation associated with biometric prompt. This may be due to either application or
+     * system use, but it is not related to KEYGUARD device entry.
+     */
+    BIOMETRIC_PROMPT,
+
+    /**
+     * An operation associated with device entry.
+     */
+    KEYGUARD,
+}
diff --git a/biometrics/face/aidl/Android.bp b/biometrics/face/aidl/Android.bp
index 3f53fc8..fff2c1d 100644
--- a/biometrics/face/aidl/Android.bp
+++ b/biometrics/face/aidl/Android.bp
@@ -16,7 +16,7 @@
     imports: [
         "android.hardware.biometrics.common",
         "android.hardware.common-V2",
-        "android.hardware.keymaster",
+        "android.hardware.keymaster-V3",
     ],
     stability: "vintf",
     backend: {
diff --git a/biometrics/face/aidl/aidl_api/android.hardware.biometrics.face/current/android/hardware/biometrics/face/ISession.aidl b/biometrics/face/aidl/aidl_api/android.hardware.biometrics.face/current/android/hardware/biometrics/face/ISession.aidl
index 7817864..4b51bb1 100644
--- a/biometrics/face/aidl/aidl_api/android.hardware.biometrics.face/current/android/hardware/biometrics/face/ISession.aidl
+++ b/biometrics/face/aidl/aidl_api/android.hardware.biometrics.face/current/android/hardware/biometrics/face/ISession.aidl
@@ -48,4 +48,7 @@
   void invalidateAuthenticatorId();
   void resetLockout(in android.hardware.keymaster.HardwareAuthToken hat);
   void close();
+  android.hardware.biometrics.common.ICancellationSignal authenticateWithContext(in long operationId, in android.hardware.biometrics.common.OperationContext context);
+  android.hardware.biometrics.common.ICancellationSignal enrollWithContext(in android.hardware.keymaster.HardwareAuthToken hat, in android.hardware.biometrics.face.EnrollmentType type, in android.hardware.biometrics.face.Feature[] features, in @nullable android.hardware.common.NativeHandle previewSurface, in android.hardware.biometrics.common.OperationContext context);
+  android.hardware.biometrics.common.ICancellationSignal detectInteractionWithContext(in android.hardware.biometrics.common.OperationContext context);
 }
diff --git a/biometrics/face/aidl/android/hardware/biometrics/face/ISession.aidl b/biometrics/face/aidl/android/hardware/biometrics/face/ISession.aidl
index 5f06b40..bbe3632 100644
--- a/biometrics/face/aidl/android/hardware/biometrics/face/ISession.aidl
+++ b/biometrics/face/aidl/android/hardware/biometrics/face/ISession.aidl
@@ -17,6 +17,7 @@
 package android.hardware.biometrics.face;
 
 import android.hardware.biometrics.common.ICancellationSignal;
+import android.hardware.biometrics.common.OperationContext;
 import android.hardware.biometrics.face.EnrollmentStageConfig;
 import android.hardware.biometrics.face.EnrollmentType;
 import android.hardware.biometrics.face.Feature;
@@ -441,4 +442,23 @@
      *   - ISessionCallback#onSessionClosed
      */
     void close();
+
+    /**
+     * These are alternative methods for some operations to allow the HAL to make optional
+     * optimizations during execution.
+     *
+     * HALs may ignore the additional context and treat all *WithContext methods the same as
+     * the original methods.
+     */
+
+    /* See ISession#authenticateWithContext(long) */
+    ICancellationSignal authenticateWithContext(in long operationId, in OperationContext context);
+
+    /* See ISession#enroll(HardwareAuthToken, EnrollmentType, Feature[], NativeHandle) */
+    ICancellationSignal enrollWithContext(in HardwareAuthToken hat, in EnrollmentType type,
+            in Feature[] features, in @nullable NativeHandle previewSurface,
+            in OperationContext context);
+
+    /* See ISession#detectInteraction() */
+    ICancellationSignal detectInteractionWithContext(in OperationContext context);
 }
diff --git a/biometrics/face/aidl/default/Android.bp b/biometrics/face/aidl/default/Android.bp
index 5092318..7f66eca 100644
--- a/biometrics/face/aidl/default/Android.bp
+++ b/biometrics/face/aidl/default/Android.bp
@@ -16,8 +16,8 @@
     shared_libs: [
         "libbase",
         "libbinder_ndk",
-        "android.hardware.biometrics.face-V1-ndk",
-        "android.hardware.biometrics.common-V1-ndk",
+        "android.hardware.biometrics.face-V2-ndk",
+        "android.hardware.biometrics.common-V2-ndk",
     ],
     srcs: [
         "main.cpp",
diff --git a/biometrics/face/aidl/default/Session.cpp b/biometrics/face/aidl/default/Session.cpp
index 01cb620..9e753e5 100644
--- a/biometrics/face/aidl/default/Session.cpp
+++ b/biometrics/face/aidl/default/Session.cpp
@@ -151,4 +151,25 @@
     return ndk::ScopedAStatus::ok();
 }
 
+ndk::ScopedAStatus Session::authenticateWithContext(
+        int64_t operationId, const common::OperationContext& /*context*/,
+        std::shared_ptr<common::ICancellationSignal>* out) {
+    return authenticate(operationId, out);
+}
+
+ndk::ScopedAStatus Session::enrollWithContext(const keymaster::HardwareAuthToken& hat,
+                                              EnrollmentType enrollmentType,
+                                              const std::vector<Feature>& features,
+                                              const std::optional<NativeHandle>& previewSurface,
+                                              const common::OperationContext& /*context*/,
+                                              std::shared_ptr<common::ICancellationSignal>* out) {
+    return enroll(hat, enrollmentType, features, previewSurface, out);
+}
+
+ndk::ScopedAStatus Session::detectInteractionWithContext(
+        const common::OperationContext& /*context*/,
+        std::shared_ptr<common::ICancellationSignal>* out) {
+    return detectInteraction(out);
+}
+
 }  // namespace aidl::android::hardware::biometrics::face
diff --git a/biometrics/face/aidl/default/Session.h b/biometrics/face/aidl/default/Session.h
index 4152909..0ce9e20 100644
--- a/biometrics/face/aidl/default/Session.h
+++ b/biometrics/face/aidl/default/Session.h
@@ -68,6 +68,20 @@
 
     ndk::ScopedAStatus close() override;
 
+    ndk::ScopedAStatus authenticateWithContext(
+            int64_t operationId, const common::OperationContext& context,
+            std::shared_ptr<common::ICancellationSignal>* out) override;
+
+    ndk::ScopedAStatus enrollWithContext(
+            const keymaster::HardwareAuthToken& hat, EnrollmentType enrollmentType,
+            const std::vector<Feature>& features, const std::optional<NativeHandle>& previewSurface,
+            const common::OperationContext& context,
+            std::shared_ptr<common::ICancellationSignal>* out) override;
+
+    ndk::ScopedAStatus detectInteractionWithContext(
+            const common::OperationContext& context,
+            std::shared_ptr<common::ICancellationSignal>* out) override;
+
   private:
     std::shared_ptr<ISessionCallback> cb_;
     std::mt19937 mRandom;
diff --git a/biometrics/face/aidl/default/face-default.xml b/biometrics/face/aidl/default/face-default.xml
index 6915ad0..e6ef842 100644
--- a/biometrics/face/aidl/default/face-default.xml
+++ b/biometrics/face/aidl/default/face-default.xml
@@ -1,6 +1,7 @@
 <manifest version="1.0" type="device">
     <hal format="aidl">
         <name>android.hardware.biometrics.face</name>
+        <version>2</version>
         <fqname>IFace/default</fqname>
     </hal>
 </manifest>
diff --git a/biometrics/face/aidl/vts/Android.bp b/biometrics/face/aidl/vts/Android.bp
index 09ec4d0..4171ac3 100644
--- a/biometrics/face/aidl/vts/Android.bp
+++ b/biometrics/face/aidl/vts/Android.bp
@@ -15,8 +15,8 @@
     ],
     srcs: ["VtsHalBiometricsFaceTargetTest.cpp"],
     static_libs: [
-        "android.hardware.biometrics.common-V1-ndk",
-        "android.hardware.biometrics.face-V1-ndk",
+        "android.hardware.biometrics.common-V2-ndk",
+        "android.hardware.biometrics.face-V2-ndk",
         "android.hardware.common-V2-ndk",
         "android.hardware.keymaster-V3-ndk",
     ],
diff --git a/biometrics/fingerprint/aidl/Android.bp b/biometrics/fingerprint/aidl/Android.bp
index c46150e..c3a056c 100644
--- a/biometrics/fingerprint/aidl/Android.bp
+++ b/biometrics/fingerprint/aidl/Android.bp
@@ -15,7 +15,7 @@
     ],
     imports: [
         "android.hardware.biometrics.common",
-        "android.hardware.keymaster",
+        "android.hardware.keymaster-V3",
     ],
     stability: "vintf",
     backend: {
@@ -26,8 +26,5 @@
             enabled: false,
         },
     },
-    versions: [
-        "1",
-        "2",
-    ],
+    versions: ["1"],
 }
diff --git a/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/2/.hash b/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/2/.hash
deleted file mode 100644
index 411cb75..0000000
--- a/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/2/.hash
+++ /dev/null
@@ -1 +0,0 @@
-762eb38ce93ea3c7d39a680949cbdbd2371b3f06
diff --git a/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/2/android/hardware/biometrics/fingerprint/AcquiredInfo.aidl b/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/2/android/hardware/biometrics/fingerprint/AcquiredInfo.aidl
deleted file mode 100644
index c51aa03..0000000
--- a/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/2/android/hardware/biometrics/fingerprint/AcquiredInfo.aidl
+++ /dev/null
@@ -1,50 +0,0 @@
-/*
- * Copyright (C) 2020 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-///////////////////////////////////////////////////////////////////////////////
-// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
-///////////////////////////////////////////////////////////////////////////////
-
-// This file is a snapshot of an AIDL file. Do not edit it manually. There are
-// two cases:
-// 1). this is a frozen version file - do not edit this in any case.
-// 2). this is a 'current' file. If you make a backwards compatible change to
-//     the interface (from the latest frozen version), the build system will
-//     prompt you to update this file with `m <name>-update-api`.
-//
-// You must not make a backward incompatible change to any AIDL file built
-// with the aidl_interface module type with versions property set. The module
-// type is used to build AIDL files in a way that they can be used across
-// independently updatable components of the system. If a device is shipped
-// with such a backward incompatible change, it has a high risk of breaking
-// later when a module using the interface is updated, e.g., Mainline modules.
-
-package android.hardware.biometrics.fingerprint;
-@Backing(type="byte") @VintfStability
-enum AcquiredInfo {
-  UNKNOWN = 0,
-  GOOD = 1,
-  PARTIAL = 2,
-  INSUFFICIENT = 3,
-  SENSOR_DIRTY = 4,
-  TOO_SLOW = 5,
-  TOO_FAST = 6,
-  VENDOR = 7,
-  START = 8,
-  TOO_DARK = 9,
-  TOO_BRIGHT = 10,
-  IMMOBILE = 11,
-  RETRYING_CAPTURE = 12,
-}
diff --git a/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/2/android/hardware/biometrics/fingerprint/Error.aidl b/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/2/android/hardware/biometrics/fingerprint/Error.aidl
deleted file mode 100644
index af7bc3c..0000000
--- a/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/2/android/hardware/biometrics/fingerprint/Error.aidl
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- * Copyright (C) 2020 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-///////////////////////////////////////////////////////////////////////////////
-// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
-///////////////////////////////////////////////////////////////////////////////
-
-// This file is a snapshot of an AIDL file. Do not edit it manually. There are
-// two cases:
-// 1). this is a frozen version file - do not edit this in any case.
-// 2). this is a 'current' file. If you make a backwards compatible change to
-//     the interface (from the latest frozen version), the build system will
-//     prompt you to update this file with `m <name>-update-api`.
-//
-// You must not make a backward incompatible change to any AIDL file built
-// with the aidl_interface module type with versions property set. The module
-// type is used to build AIDL files in a way that they can be used across
-// independently updatable components of the system. If a device is shipped
-// with such a backward incompatible change, it has a high risk of breaking
-// later when a module using the interface is updated, e.g., Mainline modules.
-
-package android.hardware.biometrics.fingerprint;
-@Backing(type="byte") @VintfStability
-enum Error {
-  UNKNOWN = 0,
-  HW_UNAVAILABLE = 1,
-  UNABLE_TO_PROCESS = 2,
-  TIMEOUT = 3,
-  NO_SPACE = 4,
-  CANCELED = 5,
-  UNABLE_TO_REMOVE = 6,
-  VENDOR = 7,
-  BAD_CALIBRATION = 8,
-}
diff --git a/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/2/android/hardware/biometrics/fingerprint/FingerprintSensorType.aidl b/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/2/android/hardware/biometrics/fingerprint/FingerprintSensorType.aidl
deleted file mode 100644
index 9c208c4..0000000
--- a/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/2/android/hardware/biometrics/fingerprint/FingerprintSensorType.aidl
+++ /dev/null
@@ -1,43 +0,0 @@
-/*
- * Copyright (C) 2020 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-///////////////////////////////////////////////////////////////////////////////
-// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
-///////////////////////////////////////////////////////////////////////////////
-
-// This file is a snapshot of an AIDL file. Do not edit it manually. There are
-// two cases:
-// 1). this is a frozen version file - do not edit this in any case.
-// 2). this is a 'current' file. If you make a backwards compatible change to
-//     the interface (from the latest frozen version), the build system will
-//     prompt you to update this file with `m <name>-update-api`.
-//
-// You must not make a backward incompatible change to any AIDL file built
-// with the aidl_interface module type with versions property set. The module
-// type is used to build AIDL files in a way that they can be used across
-// independently updatable components of the system. If a device is shipped
-// with such a backward incompatible change, it has a high risk of breaking
-// later when a module using the interface is updated, e.g., Mainline modules.
-
-package android.hardware.biometrics.fingerprint;
-@Backing(type="byte") @VintfStability
-enum FingerprintSensorType {
-  UNKNOWN = 0,
-  REAR = 1,
-  UNDER_DISPLAY_ULTRASONIC = 2,
-  UNDER_DISPLAY_OPTICAL = 3,
-  POWER_BUTTON = 4,
-  HOME_BUTTON = 5,
-}
diff --git a/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/2/android/hardware/biometrics/fingerprint/IFingerprint.aidl b/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/2/android/hardware/biometrics/fingerprint/IFingerprint.aidl
deleted file mode 100644
index 5d3df6f..0000000
--- a/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/2/android/hardware/biometrics/fingerprint/IFingerprint.aidl
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * Copyright (C) 2020 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-///////////////////////////////////////////////////////////////////////////////
-// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
-///////////////////////////////////////////////////////////////////////////////
-
-// This file is a snapshot of an AIDL file. Do not edit it manually. There are
-// two cases:
-// 1). this is a frozen version file - do not edit this in any case.
-// 2). this is a 'current' file. If you make a backwards compatible change to
-//     the interface (from the latest frozen version), the build system will
-//     prompt you to update this file with `m <name>-update-api`.
-//
-// You must not make a backward incompatible change to any AIDL file built
-// with the aidl_interface module type with versions property set. The module
-// type is used to build AIDL files in a way that they can be used across
-// independently updatable components of the system. If a device is shipped
-// with such a backward incompatible change, it has a high risk of breaking
-// later when a module using the interface is updated, e.g., Mainline modules.
-
-package android.hardware.biometrics.fingerprint;
-@VintfStability
-interface IFingerprint {
-  android.hardware.biometrics.fingerprint.SensorProps[] getSensorProps();
-  android.hardware.biometrics.fingerprint.ISession createSession(in int sensorId, in int userId, in android.hardware.biometrics.fingerprint.ISessionCallback cb);
-}
diff --git a/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/2/android/hardware/biometrics/fingerprint/ISession.aidl b/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/2/android/hardware/biometrics/fingerprint/ISession.aidl
deleted file mode 100644
index 9934a76..0000000
--- a/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/2/android/hardware/biometrics/fingerprint/ISession.aidl
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * Copyright (C) 2020 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-///////////////////////////////////////////////////////////////////////////////
-// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
-///////////////////////////////////////////////////////////////////////////////
-
-// This file is a snapshot of an AIDL file. Do not edit it manually. There are
-// two cases:
-// 1). this is a frozen version file - do not edit this in any case.
-// 2). this is a 'current' file. If you make a backwards compatible change to
-//     the interface (from the latest frozen version), the build system will
-//     prompt you to update this file with `m <name>-update-api`.
-//
-// You must not make a backward incompatible change to any AIDL file built
-// with the aidl_interface module type with versions property set. The module
-// type is used to build AIDL files in a way that they can be used across
-// independently updatable components of the system. If a device is shipped
-// with such a backward incompatible change, it has a high risk of breaking
-// later when a module using the interface is updated, e.g., Mainline modules.
-
-package android.hardware.biometrics.fingerprint;
-@VintfStability
-interface ISession {
-  void generateChallenge();
-  void revokeChallenge(in long challenge);
-  android.hardware.biometrics.common.ICancellationSignal enroll(in android.hardware.keymaster.HardwareAuthToken hat);
-  android.hardware.biometrics.common.ICancellationSignal authenticate(in long operationId);
-  android.hardware.biometrics.common.ICancellationSignal detectInteraction();
-  void enumerateEnrollments();
-  void removeEnrollments(in int[] enrollmentIds);
-  void getAuthenticatorId();
-  void invalidateAuthenticatorId();
-  void resetLockout(in android.hardware.keymaster.HardwareAuthToken hat);
-  void close();
-  void onPointerDown(in int pointerId, in int x, in int y, in float minor, in float major);
-  void onPointerUp(in int pointerId);
-  void onUiReady();
-}
diff --git a/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/2/android/hardware/biometrics/fingerprint/ISessionCallback.aidl b/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/2/android/hardware/biometrics/fingerprint/ISessionCallback.aidl
deleted file mode 100644
index 3c40ad6..0000000
--- a/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/2/android/hardware/biometrics/fingerprint/ISessionCallback.aidl
+++ /dev/null
@@ -1,53 +0,0 @@
-/*
- * Copyright (C) 2020 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-///////////////////////////////////////////////////////////////////////////////
-// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
-///////////////////////////////////////////////////////////////////////////////
-
-// This file is a snapshot of an AIDL file. Do not edit it manually. There are
-// two cases:
-// 1). this is a frozen version file - do not edit this in any case.
-// 2). this is a 'current' file. If you make a backwards compatible change to
-//     the interface (from the latest frozen version), the build system will
-//     prompt you to update this file with `m <name>-update-api`.
-//
-// You must not make a backward incompatible change to any AIDL file built
-// with the aidl_interface module type with versions property set. The module
-// type is used to build AIDL files in a way that they can be used across
-// independently updatable components of the system. If a device is shipped
-// with such a backward incompatible change, it has a high risk of breaking
-// later when a module using the interface is updated, e.g., Mainline modules.
-
-package android.hardware.biometrics.fingerprint;
-@VintfStability
-interface ISessionCallback {
-  void onChallengeGenerated(in long challenge);
-  void onChallengeRevoked(in long challenge);
-  void onAcquired(in android.hardware.biometrics.fingerprint.AcquiredInfo info, in int vendorCode);
-  void onError(in android.hardware.biometrics.fingerprint.Error error, in int vendorCode);
-  void onEnrollmentProgress(in int enrollmentId, int remaining);
-  void onAuthenticationSucceeded(in int enrollmentId, in android.hardware.keymaster.HardwareAuthToken hat);
-  void onAuthenticationFailed();
-  void onLockoutTimed(in long durationMillis);
-  void onLockoutPermanent();
-  void onLockoutCleared();
-  void onInteractionDetected();
-  void onEnrollmentsEnumerated(in int[] enrollmentIds);
-  void onEnrollmentsRemoved(in int[] enrollmentIds);
-  void onAuthenticatorIdRetrieved(in long authenticatorId);
-  void onAuthenticatorIdInvalidated(in long newAuthenticatorId);
-  void onSessionClosed();
-}
diff --git a/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/2/android/hardware/biometrics/fingerprint/SensorLocation.aidl b/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/2/android/hardware/biometrics/fingerprint/SensorLocation.aidl
deleted file mode 100644
index 295fde9..0000000
--- a/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/2/android/hardware/biometrics/fingerprint/SensorLocation.aidl
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
- * Copyright (C) 2021 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-///////////////////////////////////////////////////////////////////////////////
-// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
-///////////////////////////////////////////////////////////////////////////////
-
-// This file is a snapshot of an AIDL file. Do not edit it manually. There are
-// two cases:
-// 1). this is a frozen version file - do not edit this in any case.
-// 2). this is a 'current' file. If you make a backwards compatible change to
-//     the interface (from the latest frozen version), the build system will
-//     prompt you to update this file with `m <name>-update-api`.
-//
-// You must not make a backward incompatible change to any AIDL file built
-// with the aidl_interface module type with versions property set. The module
-// type is used to build AIDL files in a way that they can be used across
-// independently updatable components of the system. If a device is shipped
-// with such a backward incompatible change, it has a high risk of breaking
-// later when a module using the interface is updated, e.g., Mainline modules.
-
-package android.hardware.biometrics.fingerprint;
-@VintfStability
-parcelable SensorLocation {
-  int displayId;
-  int sensorLocationX;
-  int sensorLocationY;
-  int sensorRadius;
-  String display = "";
-}
diff --git a/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/2/android/hardware/biometrics/fingerprint/SensorProps.aidl b/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/2/android/hardware/biometrics/fingerprint/SensorProps.aidl
deleted file mode 100644
index 782d289..0000000
--- a/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/2/android/hardware/biometrics/fingerprint/SensorProps.aidl
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
- * Copyright (C) 2020 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-///////////////////////////////////////////////////////////////////////////////
-// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
-///////////////////////////////////////////////////////////////////////////////
-
-// This file is a snapshot of an AIDL file. Do not edit it manually. There are
-// two cases:
-// 1). this is a frozen version file - do not edit this in any case.
-// 2). this is a 'current' file. If you make a backwards compatible change to
-//     the interface (from the latest frozen version), the build system will
-//     prompt you to update this file with `m <name>-update-api`.
-//
-// You must not make a backward incompatible change to any AIDL file built
-// with the aidl_interface module type with versions property set. The module
-// type is used to build AIDL files in a way that they can be used across
-// independently updatable components of the system. If a device is shipped
-// with such a backward incompatible change, it has a high risk of breaking
-// later when a module using the interface is updated, e.g., Mainline modules.
-
-package android.hardware.biometrics.fingerprint;
-@VintfStability
-parcelable SensorProps {
-  android.hardware.biometrics.common.CommonProps commonProps;
-  android.hardware.biometrics.fingerprint.FingerprintSensorType sensorType = android.hardware.biometrics.fingerprint.FingerprintSensorType.UNKNOWN;
-  android.hardware.biometrics.fingerprint.SensorLocation[] sensorLocations;
-  boolean supportsNavigationGestures;
-  boolean supportsDetectInteraction;
-  boolean halHandlesDisplayTouches;
-  boolean halControlsIllumination;
-}
diff --git a/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/current/android/hardware/biometrics/fingerprint/ISession.aidl b/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/current/android/hardware/biometrics/fingerprint/ISession.aidl
index 9934a76..4e7b3b4 100644
--- a/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/current/android/hardware/biometrics/fingerprint/ISession.aidl
+++ b/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/current/android/hardware/biometrics/fingerprint/ISession.aidl
@@ -48,4 +48,9 @@
   void onPointerDown(in int pointerId, in int x, in int y, in float minor, in float major);
   void onPointerUp(in int pointerId);
   void onUiReady();
+  android.hardware.biometrics.common.ICancellationSignal authenticateWithContext(in long operationId, in android.hardware.biometrics.common.OperationContext context);
+  android.hardware.biometrics.common.ICancellationSignal enrollWithContext(in android.hardware.keymaster.HardwareAuthToken hat, in android.hardware.biometrics.common.OperationContext context);
+  android.hardware.biometrics.common.ICancellationSignal detectInteractionWithContext(in android.hardware.biometrics.common.OperationContext context);
+  void onPointerDownWithContext(in android.hardware.biometrics.fingerprint.PointerContext context);
+  void onPointerUpWithContext(in android.hardware.biometrics.fingerprint.PointerContext context);
 }
diff --git a/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/current/android/hardware/biometrics/fingerprint/PointerContext.aidl b/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/current/android/hardware/biometrics/fingerprint/PointerContext.aidl
new file mode 100644
index 0000000..e383330
--- /dev/null
+++ b/biometrics/fingerprint/aidl/aidl_api/android.hardware.biometrics.fingerprint/current/android/hardware/biometrics/fingerprint/PointerContext.aidl
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.biometrics.fingerprint;
+@VintfStability
+parcelable PointerContext {
+  int pointerId = 0;
+  int x = 0;
+  int y = 0;
+  float minor = 0.000000f;
+  float major = 0.000000f;
+  boolean isAoD = false;
+}
diff --git a/biometrics/fingerprint/aidl/android/hardware/biometrics/fingerprint/ISession.aidl b/biometrics/fingerprint/aidl/android/hardware/biometrics/fingerprint/ISession.aidl
index f1d96d3..ea8c6aa 100644
--- a/biometrics/fingerprint/aidl/android/hardware/biometrics/fingerprint/ISession.aidl
+++ b/biometrics/fingerprint/aidl/android/hardware/biometrics/fingerprint/ISession.aidl
@@ -17,6 +17,8 @@
 package android.hardware.biometrics.fingerprint;
 
 import android.hardware.biometrics.common.ICancellationSignal;
+import android.hardware.biometrics.common.OperationContext;
+import android.hardware.biometrics.fingerprint.PointerContext;
 import android.hardware.keymaster.HardwareAuthToken;
 
 /**
@@ -140,7 +142,7 @@
      *
      * @param hat See above documentation.
      * @return ICancellationSignal An object that can be used by the framework to cancel this
-     * operation.
+     *                             operation.
      */
     ICancellationSignal enroll(in HardwareAuthToken hat);
 
@@ -234,7 +236,7 @@
      *   - ISessionCallback#onAcquired
      *
      * @return ICancellationSignal An object that can be used by the framework to cancel this
-     * operation.
+     *                             operation.
      */
     ICancellationSignal detectInteraction();
 
@@ -448,4 +450,27 @@
      * HAL, the framework will invoke this operation to notify when the illumination is showing.
      */
     void onUiReady();
+
+    /**
+     * These are alternative methods for some operations to allow the HAL to make optional
+     * optimizations during execution.
+     *
+     * HALs may ignore the additional context and treat all *WithContext methods the same as
+     * the original methods.
+     */
+
+    /** See ISession#authenticate(long) */
+    ICancellationSignal authenticateWithContext(in long operationId, in OperationContext context);
+
+    /** See ISession#enroll(HardwareAuthToken) */
+    ICancellationSignal enrollWithContext(in HardwareAuthToken hat, in OperationContext context);
+
+    /** See ISession#detectInteraction() */
+    ICancellationSignal detectInteractionWithContext(in OperationContext context);
+
+    /** See ISession#onPointerDown(int, int, int, float, float) */
+    void onPointerDownWithContext(in PointerContext context);
+
+    /** See ISession#onPointerUp(int) */
+    void onPointerUpWithContext(in PointerContext context);
 }
diff --git a/biometrics/fingerprint/aidl/android/hardware/biometrics/fingerprint/PointerContext.aidl b/biometrics/fingerprint/aidl/android/hardware/biometrics/fingerprint/PointerContext.aidl
new file mode 100644
index 0000000..4975175
--- /dev/null
+++ b/biometrics/fingerprint/aidl/android/hardware/biometrics/fingerprint/PointerContext.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.biometrics.fingerprint;
+
+/**
+ * Additional context associated with a pointer event.
+ */
+@VintfStability
+parcelable PointerContext {
+    /* See android.view.MotionEvent#getPointerId. */
+    int pointerId = 0;
+
+    /* The distance in pixels from the left edge of the display. */
+    int x = 0;
+
+    /* The distance in pixels from the top edge of the display. */
+    int y = 0;
+
+    /* See android.view.MotionEvent#getTouchMinor. */
+    float minor = 0f;
+
+    /* See android.view.MotionEvent#getTouchMajor. */
+    float major = 0f;
+
+    /* Flag indicating that the display is in AoD mode. */
+    boolean isAoD = false;
+}
diff --git a/biometrics/fingerprint/aidl/default/Android.bp b/biometrics/fingerprint/aidl/default/Android.bp
index d4194a3..430bf3c 100644
--- a/biometrics/fingerprint/aidl/default/Android.bp
+++ b/biometrics/fingerprint/aidl/default/Android.bp
@@ -25,7 +25,7 @@
         "libbase",
         "libbinder_ndk",
         "android.hardware.biometrics.fingerprint-V2-ndk",
-        "android.hardware.biometrics.common-V1-ndk",
+        "android.hardware.biometrics.common-V2-ndk",
     ],
 }
 
diff --git a/biometrics/fingerprint/aidl/default/Session.cpp b/biometrics/fingerprint/aidl/default/Session.cpp
index ca481e7..8cbcfc7 100644
--- a/biometrics/fingerprint/aidl/default/Session.cpp
+++ b/biometrics/fingerprint/aidl/default/Session.cpp
@@ -244,4 +244,30 @@
     return ndk::ScopedAStatus::ok();
 }
 
+ndk::ScopedAStatus Session::authenticateWithContext(
+        int64_t operationId, const common::OperationContext& /*context*/,
+        std::shared_ptr<common::ICancellationSignal>* out) {
+    return authenticate(operationId, out);
+}
+
+ndk::ScopedAStatus Session::enrollWithContext(const keymaster::HardwareAuthToken& hat,
+                                              const common::OperationContext& /*context*/,
+                                              std::shared_ptr<common::ICancellationSignal>* out) {
+    return enroll(hat, out);
+}
+
+ndk::ScopedAStatus Session::detectInteractionWithContext(
+        const common::OperationContext& /*context*/,
+        std::shared_ptr<common::ICancellationSignal>* out) {
+    return detectInteraction(out);
+}
+
+ndk::ScopedAStatus Session::onPointerDownWithContext(const PointerContext& context) {
+    return onPointerDown(context.pointerId, context.x, context.y, context.minor, context.major);
+}
+
+ndk::ScopedAStatus Session::onPointerUpWithContext(const PointerContext& context) {
+    return onPointerUp(context.pointerId);
+}
+
 }  // namespace aidl::android::hardware::biometrics::fingerprint
diff --git a/biometrics/fingerprint/aidl/default/include/Session.h b/biometrics/fingerprint/aidl/default/include/Session.h
index 9e46422..584cb27 100644
--- a/biometrics/fingerprint/aidl/default/include/Session.h
+++ b/biometrics/fingerprint/aidl/default/include/Session.h
@@ -79,6 +79,22 @@
 
     ndk::ScopedAStatus onUiReady() override;
 
+    ndk::ScopedAStatus authenticateWithContext(
+            int64_t operationId, const common::OperationContext& context,
+            std::shared_ptr<common::ICancellationSignal>* out) override;
+
+    ndk::ScopedAStatus enrollWithContext(
+            const keymaster::HardwareAuthToken& hat, const common::OperationContext& context,
+            std::shared_ptr<common::ICancellationSignal>* out) override;
+
+    ndk::ScopedAStatus detectInteractionWithContext(
+            const common::OperationContext& context,
+            std::shared_ptr<common::ICancellationSignal>* out) override;
+
+    ndk::ScopedAStatus onPointerDownWithContext(const PointerContext& context) override;
+
+    ndk::ScopedAStatus onPointerUpWithContext(const PointerContext& context) override;
+
     bool isClosed();
 
   private:
diff --git a/bluetooth/audio/2.1/default/BluetoothAudioProvidersFactory.cpp b/bluetooth/audio/2.1/default/BluetoothAudioProvidersFactory.cpp
index b0d171a..6e8c1d7 100644
--- a/bluetooth/audio/2.1/default/BluetoothAudioProvidersFactory.cpp
+++ b/bluetooth/audio/2.1/default/BluetoothAudioProvidersFactory.cpp
@@ -41,12 +41,8 @@
     BluetoothAudioProvidersFactory::hearing_aid_provider_instance_;
 LeAudioOutputAudioProvider
     BluetoothAudioProvidersFactory::leaudio_output_provider_instance_;
-LeAudioOffloadOutputAudioProvider
-    BluetoothAudioProvidersFactory::leaudio_offload_output_provider_instance_;
 LeAudioInputAudioProvider
     BluetoothAudioProvidersFactory::leaudio_input_provider_instance_;
-LeAudioOffloadInputAudioProvider
-    BluetoothAudioProvidersFactory::leaudio_offload_input_provider_instance_;
 
 Return<void> BluetoothAudioProvidersFactory::openProvider(
     const V2_0::SessionType sessionType, openProvider_cb _hidl_cb) {
@@ -94,15 +90,9 @@
     case SessionType::LE_AUDIO_SOFTWARE_ENCODING_DATAPATH:
       provider = &leaudio_output_provider_instance_;
       break;
-    case SessionType::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH:
-      provider = &leaudio_offload_output_provider_instance_;
-      break;
     case SessionType::LE_AUDIO_SOFTWARE_DECODED_DATAPATH:
       provider = &leaudio_input_provider_instance_;
       break;
-    case SessionType::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH:
-      provider = &leaudio_offload_input_provider_instance_;
-      break;
     default:
       status = BluetoothAudioStatus::FAILURE;
   }
@@ -157,7 +147,11 @@
         audio_capabilities[i].codecCapabilities(db_codec_capabilities[i]);
       }
     }
-  } else if (sessionType != SessionType::UNKNOWN) {
+  } else if (sessionType !=
+                 SessionType::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH &&
+             sessionType !=
+                 SessionType::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH &&
+             sessionType != SessionType::UNKNOWN) {
     std::vector<PcmParameters> db_pcm_capabilities =
         android::bluetooth::audio::GetSoftwarePcmCapabilities_2_1();
     if (db_pcm_capabilities.size() == 1) {
diff --git a/bluetooth/audio/2.1/default/BluetoothAudioProvidersFactory.h b/bluetooth/audio/2.1/default/BluetoothAudioProvidersFactory.h
index f8f557e..714d738 100644
--- a/bluetooth/audio/2.1/default/BluetoothAudioProvidersFactory.h
+++ b/bluetooth/audio/2.1/default/BluetoothAudioProvidersFactory.h
@@ -56,8 +56,6 @@
   static HearingAidAudioProvider hearing_aid_provider_instance_;
   static LeAudioOutputAudioProvider leaudio_output_provider_instance_;
   static LeAudioInputAudioProvider leaudio_input_provider_instance_;
-  static LeAudioOffloadOutputAudioProvider leaudio_offload_output_provider_instance_;
-  static LeAudioOffloadInputAudioProvider leaudio_offload_input_provider_instance_;
 };
 
 extern "C" IBluetoothAudioProvidersFactory*
diff --git a/bluetooth/audio/2.2/IBluetoothAudioProvider.hal b/bluetooth/audio/2.2/IBluetoothAudioProvider.hal
index bc16b01..f577537 100644
--- a/bluetooth/audio/2.2/IBluetoothAudioProvider.hal
+++ b/bluetooth/audio/2.2/IBluetoothAudioProvider.hal
@@ -59,4 +59,14 @@
      */
     startSession_2_2(IBluetoothAudioPort hostIf, AudioConfiguration audioConfig)
                 generates (Status status, fmq_sync<uint8_t> dataMQ);
+
+    /**
+     * Called when the audio configuration of the stream has been changed.
+     *
+     * @param audioConfig The audio configuration negotiated with the remote
+     *    device. The PCM parameters are set if software based encoding,
+     *    otherwise the correct codec configuration is used for hardware
+     *    encoding.
+     */
+    updateAudioConfiguration(AudioConfiguration audioConfig);
 };
diff --git a/bluetooth/audio/2.2/IBluetoothAudioProvidersFactory.hal b/bluetooth/audio/2.2/IBluetoothAudioProvidersFactory.hal
index 7fb5b6c..ae9c598 100644
--- a/bluetooth/audio/2.2/IBluetoothAudioProvidersFactory.hal
+++ b/bluetooth/audio/2.2/IBluetoothAudioProvidersFactory.hal
@@ -48,4 +48,26 @@
      */
     openProvider_2_2(SessionType sessionType)
         generates (Status status, IBluetoothAudioProvider provider);
+
+    /**
+     * Gets a list of audio capabilities for a session type.
+     *
+     * For software encoding, the PCM capabilities are returned.
+     * For hardware encoding, the supported codecs and their capabilities are
+     * returned.
+     *
+     * @param sessionType The session type (e.g.
+     *    A2DP_SOFTWARE_ENCODING_DATAPATH).
+     * @return audioCapabilities A list containing all the capabilities
+     *    supported by the sesson type. The capabilities is a list of
+     *    available options when configuring the codec for the session.
+     *    For software encoding it is the PCM data rate.
+     *    For hardware encoding it is the list of supported codecs and their
+     *    capabilities.
+     *    If a provider isn't supported, an empty list should be returned.
+     *    Note: Only one entry should exist per codec when using hardware
+     *    encoding.
+     */
+     getProviderCapabilities_2_2(SessionType sessionType)
+         generates (vec<AudioCapabilities> audioCapabilities);
 };
diff --git a/bluetooth/audio/2.2/default/A2dpSoftwareAudioProvider.cpp b/bluetooth/audio/2.2/default/A2dpSoftwareAudioProvider.cpp
index ba31d39..eb87178 100644
--- a/bluetooth/audio/2.2/default/A2dpSoftwareAudioProvider.cpp
+++ b/bluetooth/audio/2.2/default/A2dpSoftwareAudioProvider.cpp
@@ -21,7 +21,7 @@
 #include <android-base/logging.h>
 
 #include "BluetoothAudioSessionReport_2_2.h"
-#include "BluetoothAudioSupportedCodecsDB_2_1.h"
+#include "BluetoothAudioSupportedCodecsDB_2_2.h"
 
 namespace android {
 namespace hardware {
diff --git a/bluetooth/audio/2.2/default/BluetoothAudioProvider.cpp b/bluetooth/audio/2.2/default/BluetoothAudioProvider.cpp
index 3c0ff42..202cfb9 100644
--- a/bluetooth/audio/2.2/default/BluetoothAudioProvider.cpp
+++ b/bluetooth/audio/2.2/default/BluetoothAudioProvider.cpp
@@ -22,7 +22,7 @@
 
 #include "AudioPort_2_0_to_2_2_Wrapper.h"
 #include "BluetoothAudioSessionReport_2_2.h"
-#include "BluetoothAudioSupportedCodecsDB_2_1.h"
+#include "BluetoothAudioSupportedCodecsDB_2_2.h"
 
 namespace android {
 namespace hardware {
@@ -186,6 +186,29 @@
   return Void();
 }
 
+Return<void> BluetoothAudioProvider::updateAudioConfiguration(
+    const AudioConfiguration& audioConfig) {
+  LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_);
+
+  if (stack_iface_ == nullptr) {
+    LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_)
+              << " has NO session";
+    return Void();
+  }
+
+  if (audioConfig.getDiscriminator() != audio_config_.getDiscriminator()) {
+    LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_)
+              << " audio config type is not match";
+    return Void();
+  }
+
+  audio_config_ = audioConfig;
+  BluetoothAudioSessionReport_2_2::ReportAudioConfigChanged(session_type_,
+                                                            audio_config_);
+
+  return Void();
+}
+
 }  // namespace implementation
 }  // namespace V2_2
 }  // namespace audio
diff --git a/bluetooth/audio/2.2/default/BluetoothAudioProvider.h b/bluetooth/audio/2.2/default/BluetoothAudioProvider.h
index 0f1f3c6..425ea3b 100644
--- a/bluetooth/audio/2.2/default/BluetoothAudioProvider.h
+++ b/bluetooth/audio/2.2/default/BluetoothAudioProvider.h
@@ -53,6 +53,8 @@
   Return<void> streamStarted(BluetoothAudioStatus status) override;
   Return<void> streamSuspended(BluetoothAudioStatus status) override;
   Return<void> endSession() override;
+  Return<void> updateAudioConfiguration(
+      const AudioConfiguration& audioConfig) override;
 
  protected:
   sp<BluetoothAudioDeathRecipient> death_recipient_;
diff --git a/bluetooth/audio/2.2/default/BluetoothAudioProvidersFactory.cpp b/bluetooth/audio/2.2/default/BluetoothAudioProvidersFactory.cpp
index 510833d..490a436 100644
--- a/bluetooth/audio/2.2/default/BluetoothAudioProvidersFactory.cpp
+++ b/bluetooth/audio/2.2/default/BluetoothAudioProvidersFactory.cpp
@@ -20,7 +20,7 @@
 
 #include <android-base/logging.h>
 
-#include "BluetoothAudioSupportedCodecsDB_2_1.h"
+#include "BluetoothAudioSupportedCodecsDB_2_2.h"
 
 namespace android {
 namespace hardware {
@@ -98,15 +98,9 @@
     case V2_1::SessionType::LE_AUDIO_SOFTWARE_ENCODING_DATAPATH:
       provider = &leaudio_output_provider_instance_;
       break;
-    case V2_1::SessionType::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH:
-      provider = &leaudio_offload_output_provider_instance_;
-      break;
     case V2_1::SessionType::LE_AUDIO_SOFTWARE_DECODED_DATAPATH:
       provider = &leaudio_input_provider_instance_;
       break;
-    case V2_1::SessionType::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH:
-      provider = &leaudio_offload_input_provider_instance_;
-      break;
     default:
       status = BluetoothAudioStatus::FAILURE;
   }
@@ -221,6 +215,47 @@
   return Void();
 }
 
+Return<void> BluetoothAudioProvidersFactory::getProviderCapabilities_2_2(
+    const V2_1::SessionType sessionType,
+    getProviderCapabilities_2_2_cb _hidl_cb) {
+  hidl_vec<V2_2::AudioCapabilities> audio_capabilities =
+      hidl_vec<V2_2::AudioCapabilities>(0);
+  if (sessionType == V2_1::SessionType::A2DP_HARDWARE_OFFLOAD_DATAPATH) {
+    std::vector<CodecCapabilities> db_codec_capabilities =
+        android::bluetooth::audio::GetOffloadCodecCapabilities(sessionType);
+    if (db_codec_capabilities.size()) {
+      audio_capabilities.resize(db_codec_capabilities.size());
+      for (int i = 0; i < db_codec_capabilities.size(); ++i) {
+        audio_capabilities[i].codecCapabilities(db_codec_capabilities[i]);
+      }
+    }
+  } else if (sessionType == V2_1::SessionType::
+                                LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH ||
+             sessionType == V2_1::SessionType::
+                                LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
+    std::vector<LeAudioCodecCapabilitiesSetting> db_codec_capabilities =
+        android::bluetooth::audio::GetLeAudioOffloadCodecCapabilities(
+            sessionType);
+    if (db_codec_capabilities.size()) {
+      audio_capabilities.resize(db_codec_capabilities.size());
+      for (int i = 0; i < db_codec_capabilities.size(); ++i) {
+        audio_capabilities[i].leAudioCapabilities(db_codec_capabilities[i]);
+      }
+    }
+  } else if (sessionType != V2_1::SessionType::UNKNOWN) {
+    std::vector<V2_1::PcmParameters> db_pcm_capabilities =
+        android::bluetooth::audio::GetSoftwarePcmCapabilities_2_1();
+    if (db_pcm_capabilities.size() == 1) {
+      audio_capabilities.resize(1);
+      audio_capabilities[0].pcmCapabilities(db_pcm_capabilities[0]);
+    }
+  }
+  LOG(INFO) << __func__ << " - SessionType=" << toString(sessionType)
+            << " supports " << audio_capabilities.size() << " codecs";
+  _hidl_cb(audio_capabilities);
+  return Void();
+}
+
 IBluetoothAudioProvidersFactory* HIDL_FETCH_IBluetoothAudioProvidersFactory(
     const char* /* name */) {
   return new BluetoothAudioProvidersFactory();
diff --git a/bluetooth/audio/2.2/default/BluetoothAudioProvidersFactory.h b/bluetooth/audio/2.2/default/BluetoothAudioProvidersFactory.h
index 658249b..4f549d9 100644
--- a/bluetooth/audio/2.2/default/BluetoothAudioProvidersFactory.h
+++ b/bluetooth/audio/2.2/default/BluetoothAudioProvidersFactory.h
@@ -53,6 +53,10 @@
       const V2_1::SessionType sessionType,
       getProviderCapabilities_2_1_cb _hidl_cb) override;
 
+  Return<void> getProviderCapabilities_2_2(
+      const V2_1::SessionType sessionType,
+      getProviderCapabilities_2_2_cb _hidl_cb) override;
+
  private:
   static A2dpSoftwareAudioProvider a2dp_software_provider_instance_;
   static A2dpOffloadAudioProvider a2dp_offload_provider_instance_;
diff --git a/bluetooth/audio/2.2/default/HearingAidAudioProvider.cpp b/bluetooth/audio/2.2/default/HearingAidAudioProvider.cpp
index 9b3294f..25e49a1 100644
--- a/bluetooth/audio/2.2/default/HearingAidAudioProvider.cpp
+++ b/bluetooth/audio/2.2/default/HearingAidAudioProvider.cpp
@@ -21,7 +21,7 @@
 #include <android-base/logging.h>
 
 #include "BluetoothAudioSessionReport_2_2.h"
-#include "BluetoothAudioSupportedCodecsDB_2_1.h"
+#include "BluetoothAudioSupportedCodecsDB_2_2.h"
 
 namespace android {
 namespace hardware {
diff --git a/bluetooth/audio/2.2/default/LeAudioAudioProvider.cpp b/bluetooth/audio/2.2/default/LeAudioAudioProvider.cpp
index 9ec1776..a7a0023 100644
--- a/bluetooth/audio/2.2/default/LeAudioAudioProvider.cpp
+++ b/bluetooth/audio/2.2/default/LeAudioAudioProvider.cpp
@@ -22,7 +22,7 @@
 
 #include "AudioPort_2_0_to_2_2_Wrapper.h"
 #include "BluetoothAudioSessionReport_2_2.h"
-#include "BluetoothAudioSupportedCodecsDB_2_1.h"
+#include "BluetoothAudioSupportedCodecsDB_2_2.h"
 
 namespace android {
 namespace hardware {
diff --git a/bluetooth/audio/2.2/default/LeAudioOffloadAudioProvider.cpp b/bluetooth/audio/2.2/default/LeAudioOffloadAudioProvider.cpp
index e3da267..2b0c02f 100644
--- a/bluetooth/audio/2.2/default/LeAudioOffloadAudioProvider.cpp
+++ b/bluetooth/audio/2.2/default/LeAudioOffloadAudioProvider.cpp
@@ -22,7 +22,6 @@
 
 #include "AudioPort_2_0_to_2_2_Wrapper.h"
 #include "BluetoothAudioSessionReport_2_2.h"
-#include "BluetoothAudioSupportedCodecsDB_2_1.h"
 #include "BluetoothAudioSupportedCodecsDB_2_2.h"
 
 namespace android {
diff --git a/bluetooth/audio/2.2/types.hal b/bluetooth/audio/2.2/types.hal
index d5f8a3f..6755899 100644
--- a/bluetooth/audio/2.2/types.hal
+++ b/bluetooth/audio/2.2/types.hal
@@ -19,6 +19,8 @@
 import @2.1::Lc3Parameters;
 import @2.1::PcmParameters;
 import @2.0::CodecConfiguration;
+import @2.0::CodecCapabilities;
+import @2.1::CodecType;
 
 enum LeAudioMode : uint8_t {
     UNKNOWN = 0x00,
@@ -26,6 +28,12 @@
     BROADCAST = 0x02,
 };
 
+enum AudioLocation : uint8_t {
+  UNKNOWN = 0,
+  FRONT_LEFT = 1,
+  FRONT_RIGHT = 2,
+};
+
 struct UnicastStreamMap {
     /* The connection handle used for a unicast or a broadcast group. */
     uint16_t streamHandle;
@@ -70,3 +78,50 @@
     CodecConfiguration codecConfig;
     LeAudioConfiguration leAudioConfig;
 };
+
+/** Used to specify the capabilities of the different session types */
+safe_union AudioCapabilities {
+    PcmParameters pcmCapabilities;
+    CodecCapabilities codecCapabilities;
+    LeAudioCodecCapabilitiesSetting leAudioCapabilities;
+};
+
+/**
+ * Used to specify the le audio capabilities for unicast and broadcast hardware offload.
+ */
+struct LeAudioCodecCapabilitiesSetting{
+    UnicastCapability unicastEncodeCapability;
+    UnicastCapability unicastDecodeCapability;
+    BroadcastCapability broadcastCapability;
+};
+
+/**
+ * Used to specify the le audio unicast codec capabilities for hardware offload.
+ */
+struct UnicastCapability {
+    CodecType codecType;
+    AudioLocation supportedChannel;
+
+    // The number of connected device
+    uint8_t deviceCount;
+
+    // Supported channel count for each device
+    uint8_t channelCountPerDevice;
+
+    // Should use safe union when there is more than one codec
+    Lc3Parameters capabilities;
+};
+
+/**
+ * Used to specify the le audio broadcast codec capabilities for hardware offload.
+ */
+struct BroadcastCapability {
+    CodecType codecType;
+    AudioLocation supportedChannel;
+
+    // Supported channel count for each stream
+    uint8_t channelCountPerStream;
+
+    // Should use safe union when there is more than one codec
+    vec<Lc3Parameters> capabilities;
+};
diff --git a/bluetooth/audio/aidl/Android.bp b/bluetooth/audio/aidl/Android.bp
index 12eed55..5107240 100644
--- a/bluetooth/audio/aidl/Android.bp
+++ b/bluetooth/audio/aidl/Android.bp
@@ -43,6 +43,10 @@
             vndk: {
                 enabled: true,
             },
+            apex_available: [
+                "//apex_available:platform",
+                "com.android.bluetooth",
+            ],
         },
     },
 }
diff --git a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/AacCapabilities.aidl b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/AacCapabilities.aidl
index ad44c26..899b8ca 100644
--- a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/AacCapabilities.aidl
+++ b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/AacCapabilities.aidl
@@ -34,9 +34,9 @@
 package android.hardware.bluetooth.audio;
 @VintfStability
 parcelable AacCapabilities {
-  android.hardware.bluetooth.audio.AacObjectType objectType;
+  android.hardware.bluetooth.audio.AacObjectType[] objectType;
   int[] sampleRateHz;
-  android.hardware.bluetooth.audio.ChannelMode channelMode;
+  android.hardware.bluetooth.audio.ChannelMode[] channelMode;
   boolean variableBitRateSupported;
   byte[] bitsPerSample;
 }
diff --git a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/AacObjectType.aidl b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/AacObjectType.aidl
index c129c66..2148244 100644
--- a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/AacObjectType.aidl
+++ b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/AacObjectType.aidl
@@ -34,8 +34,8 @@
 package android.hardware.bluetooth.audio;
 @Backing(type="byte") @VintfStability
 enum AacObjectType {
-  MPEG2_LC = 1,
-  MPEG4_LC = 2,
-  MPEG4_LTP = 4,
-  MPEG4_SCALABLE = 8,
+  MPEG2_LC = 0,
+  MPEG4_LC = 1,
+  MPEG4_LTP = 2,
+  MPEG4_SCALABLE = 3,
 }
diff --git a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/AptxCapabilities.aidl b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/AptxCapabilities.aidl
index 4767b69..08a38e2 100644
--- a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/AptxCapabilities.aidl
+++ b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/AptxCapabilities.aidl
@@ -35,6 +35,6 @@
 @VintfStability
 parcelable AptxCapabilities {
   int[] sampleRateHz;
-  android.hardware.bluetooth.audio.ChannelMode channelMode;
+  android.hardware.bluetooth.audio.ChannelMode[] channelMode;
   byte[] bitsPerSample;
 }
diff --git a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/AudioCapabilities.aidl b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/AudioCapabilities.aidl
index 20a7731..8ae716f 100644
--- a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/AudioCapabilities.aidl
+++ b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/AudioCapabilities.aidl
@@ -35,6 +35,6 @@
 @VintfStability
 union AudioCapabilities {
   android.hardware.bluetooth.audio.PcmCapabilities pcmCapabilities;
-  android.hardware.bluetooth.audio.CodecCapabilities codecCapabilities;
-  android.hardware.bluetooth.audio.LeAudioCapabilities leAudioCapabilities;
+  android.hardware.bluetooth.audio.CodecCapabilities a2dpCapabilities;
+  android.hardware.bluetooth.audio.LeAudioCodecCapabilitiesSetting leAudioCapabilities;
 }
diff --git a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/AudioConfiguration.aidl b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/AudioConfiguration.aidl
index 34f7837..50b54c3 100644
--- a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/AudioConfiguration.aidl
+++ b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/AudioConfiguration.aidl
@@ -35,6 +35,6 @@
 @VintfStability
 union AudioConfiguration {
   android.hardware.bluetooth.audio.PcmConfiguration pcmConfig;
-  android.hardware.bluetooth.audio.CodecConfiguration codecConfig;
+  android.hardware.bluetooth.audio.CodecConfiguration a2dpConfig;
   android.hardware.bluetooth.audio.LeAudioConfiguration leAudioConfig;
 }
diff --git a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/BluetoothAudioStatus.aidl b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/BluetoothAudioStatus.aidl
new file mode 100644
index 0000000..7c0d825
--- /dev/null
+++ b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/BluetoothAudioStatus.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.bluetooth.audio;
+@Backing(type="int") @VintfStability
+enum BluetoothAudioStatus {
+  UNKNOWN = 0,
+  SUCCESS = 1,
+  UNSUPPORTED_CODEC_CONFIGURATION = 2,
+  FAILURE = 3,
+}
diff --git a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/BroadcastCapability.aidl b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/BroadcastCapability.aidl
new file mode 100644
index 0000000..58710ef
--- /dev/null
+++ b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/BroadcastCapability.aidl
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.bluetooth.audio;
+@VintfStability
+parcelable BroadcastCapability {
+  android.hardware.bluetooth.audio.CodecType codecType;
+  android.hardware.bluetooth.audio.AudioLocation supportedChannel;
+  int channelCountPerStream;
+  android.hardware.bluetooth.audio.BroadcastCapability.LeAudioCodecCapabilities leAudioCodecCapabilities;
+  @VintfStability
+  parcelable VendorCapabilities {
+    ParcelableHolder extension;
+  }
+  @VintfStability
+  union LeAudioCodecCapabilities {
+    @nullable android.hardware.bluetooth.audio.Lc3Capabilities[] lc3Capabilities;
+    @nullable android.hardware.bluetooth.audio.BroadcastCapability.VendorCapabilities[] vendorCapabillities;
+  }
+}
diff --git a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/BroadcastConfiguration.aidl b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/BroadcastConfiguration.aidl
index b3aa709..5fa3926 100644
--- a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/BroadcastConfiguration.aidl
+++ b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/BroadcastConfiguration.aidl
@@ -39,6 +39,6 @@
   parcelable BroadcastStreamMap {
     char streamHandle;
     int audioChannelAllocation;
-    android.hardware.bluetooth.audio.LeAudioCodecConfiguration leAudioCondecConfig;
+    android.hardware.bluetooth.audio.LeAudioCodecConfiguration leAudioCodecConfig;
   }
 }
diff --git a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/ChannelMode.aidl b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/ChannelMode.aidl
index 3ca93c3..c3bc741 100644
--- a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/ChannelMode.aidl
+++ b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/ChannelMode.aidl
@@ -34,7 +34,7 @@
 package android.hardware.bluetooth.audio;
 @Backing(type="byte") @VintfStability
 enum ChannelMode {
-  UNKNOWN = 1,
-  MONO = 2,
-  STEREO = 4,
+  UNKNOWN = 0,
+  MONO = 1,
+  STEREO = 2,
 }
diff --git a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/CodecCapabilities.aidl b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/CodecCapabilities.aidl
index b451880..e2a08a0 100644
--- a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/CodecCapabilities.aidl
+++ b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/CodecCapabilities.aidl
@@ -42,5 +42,6 @@
     android.hardware.bluetooth.audio.AacCapabilities aacCapabilities;
     android.hardware.bluetooth.audio.LdacCapabilities ldacCapabilities;
     android.hardware.bluetooth.audio.AptxCapabilities aptxCapabilities;
+    android.hardware.bluetooth.audio.Lc3Capabilities lc3Capabilities;
   }
 }
diff --git a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/CodecConfiguration.aidl b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/CodecConfiguration.aidl
index 863aee2..34ebd60 100644
--- a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/CodecConfiguration.aidl
+++ b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/CodecConfiguration.aidl
@@ -45,5 +45,6 @@
     android.hardware.bluetooth.audio.AacConfiguration aacConfig;
     android.hardware.bluetooth.audio.LdacConfiguration ldacConfig;
     android.hardware.bluetooth.audio.AptxConfiguration aptxConfig;
+    android.hardware.bluetooth.audio.Lc3Configuration lc3Config;
   }
 }
diff --git a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/IBluetoothAudioProvider.aidl b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/IBluetoothAudioProvider.aidl
index 84bcc0c..0dcba2e 100644
--- a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/IBluetoothAudioProvider.aidl
+++ b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/IBluetoothAudioProvider.aidl
@@ -35,7 +35,8 @@
 @VintfStability
 interface IBluetoothAudioProvider {
   void endSession();
-  android.hardware.common.fmq.MQDescriptor<int,android.hardware.common.fmq.UnsynchronizedWrite> startSession(in android.hardware.bluetooth.audio.IBluetoothAudioPort hostIf, in android.hardware.bluetooth.audio.AudioConfiguration audioConfig);
-  void streamStarted(in boolean status);
-  void streamSuspended(in boolean status);
+  android.hardware.common.fmq.MQDescriptor<byte,android.hardware.common.fmq.SynchronizedReadWrite> startSession(in android.hardware.bluetooth.audio.IBluetoothAudioPort hostIf, in android.hardware.bluetooth.audio.AudioConfiguration audioConfig);
+  void streamStarted(in android.hardware.bluetooth.audio.BluetoothAudioStatus status);
+  void streamSuspended(in android.hardware.bluetooth.audio.BluetoothAudioStatus status);
+  void updateAudioConfiguration(in android.hardware.bluetooth.audio.AudioConfiguration audioConfig);
 }
diff --git a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/Lc3Capabilities.aidl b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/Lc3Capabilities.aidl
index 3c650da..cc4449a 100644
--- a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/Lc3Capabilities.aidl
+++ b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/Lc3Capabilities.aidl
@@ -39,4 +39,5 @@
   int[] frameDurationUs;
   int[] octetsPerFrame;
   byte[] blocksPerSdu;
+  android.hardware.bluetooth.audio.ChannelMode[] channelMode;
 }
diff --git a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/Lc3Configuration.aidl b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/Lc3Configuration.aidl
index ef77da7..7e8dccf 100644
--- a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/Lc3Configuration.aidl
+++ b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/Lc3Configuration.aidl
@@ -39,4 +39,5 @@
   int frameDurationUs;
   int octetsPerFrame;
   byte blocksPerSdu;
+  android.hardware.bluetooth.audio.ChannelMode channelMode;
 }
diff --git a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/LdacCapabilities.aidl b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/LdacCapabilities.aidl
index 19e041a..aa4e4c8 100644
--- a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/LdacCapabilities.aidl
+++ b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/LdacCapabilities.aidl
@@ -35,7 +35,7 @@
 @VintfStability
 parcelable LdacCapabilities {
   int[] sampleRateHz;
-  android.hardware.bluetooth.audio.LdacChannelMode channelMode;
-  android.hardware.bluetooth.audio.LdacQualityIndex qualityIndex;
+  android.hardware.bluetooth.audio.LdacChannelMode[] channelMode;
+  android.hardware.bluetooth.audio.LdacQualityIndex[] qualityIndex;
   byte[] bitsPerSample;
 }
diff --git a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/LdacChannelMode.aidl b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/LdacChannelMode.aidl
index a9d6c5e..88d6faf 100644
--- a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/LdacChannelMode.aidl
+++ b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/LdacChannelMode.aidl
@@ -34,8 +34,8 @@
 package android.hardware.bluetooth.audio;
 @Backing(type="byte") @VintfStability
 enum LdacChannelMode {
-  UNKNOWN = 1,
-  STEREO = 2,
-  DUAL = 4,
-  MONO = 8,
+  UNKNOWN = 0,
+  STEREO = 1,
+  DUAL = 2,
+  MONO = 3,
 }
diff --git a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/LdacQualityIndex.aidl b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/LdacQualityIndex.aidl
index bc0d97b..35e4358 100644
--- a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/LdacQualityIndex.aidl
+++ b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/LdacQualityIndex.aidl
@@ -34,8 +34,8 @@
 package android.hardware.bluetooth.audio;
 @Backing(type="byte") @VintfStability
 enum LdacQualityIndex {
-  QUALITY_HIGH = 1,
-  QUALITY_MID = 2,
-  QUALITY_LOW = 4,
-  QUALITY_ABR = 8,
+  HIGH = 0,
+  MID = 1,
+  LOW = 2,
+  ABR = 3,
 }
diff --git a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/LeAudioCapabilities.aidl b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/LeAudioCapabilities.aidl
deleted file mode 100644
index 9efafca..0000000
--- a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/LeAudioCapabilities.aidl
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * Copyright 2021 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-///////////////////////////////////////////////////////////////////////////////
-// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
-///////////////////////////////////////////////////////////////////////////////
-
-// This file is a snapshot of an AIDL file. Do not edit it manually. There are
-// two cases:
-// 1). this is a frozen version file - do not edit this in any case.
-// 2). this is a 'current' file. If you make a backwards compatible change to
-//     the interface (from the latest frozen version), the build system will
-//     prompt you to update this file with `m <name>-update-api`.
-//
-// You must not make a backward incompatible change to any AIDL file built
-// with the aidl_interface module type with versions property set. The module
-// type is used to build AIDL files in a way that they can be used across
-// independently updatable components of the system. If a device is shipped
-// with such a backward incompatible change, it has a high risk of breaking
-// later when a module using the interface is updated, e.g., Mainline modules.
-
-package android.hardware.bluetooth.audio;
-@VintfStability
-parcelable LeAudioCapabilities {
-  android.hardware.bluetooth.audio.LeAudioMode mode;
-  android.hardware.bluetooth.audio.CodecType codecType;
-  android.hardware.bluetooth.audio.AudioLocation supportedChannel;
-  int supportedChannelCount;
-  android.hardware.bluetooth.audio.LeAudioCapabilities.LeaudioCodecCapabilities leaudioCodecCapabilities;
-  @VintfStability
-  parcelable VendorCapabilities {
-    ParcelableHolder extension;
-  }
-  @VintfStability
-  union LeaudioCodecCapabilities {
-    android.hardware.bluetooth.audio.Lc3Capabilities lc3Capabilities;
-    android.hardware.bluetooth.audio.LeAudioCapabilities.VendorCapabilities vendorCapabillities;
-  }
-}
diff --git a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/LeAudioCodecCapabilitiesSetting.aidl b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/LeAudioCodecCapabilitiesSetting.aidl
new file mode 100644
index 0000000..9818d54
--- /dev/null
+++ b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/LeAudioCodecCapabilitiesSetting.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.bluetooth.audio;
+@VintfStability
+parcelable LeAudioCodecCapabilitiesSetting {
+  android.hardware.bluetooth.audio.UnicastCapability unicastEncodeCapability;
+  android.hardware.bluetooth.audio.UnicastCapability unicastDecodeCapability;
+  android.hardware.bluetooth.audio.BroadcastCapability broadcastCapability;
+}
diff --git a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/LeAudioConfiguration.aidl b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/LeAudioConfiguration.aidl
index c6cb5cb..2bc1791 100644
--- a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/LeAudioConfiguration.aidl
+++ b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/LeAudioConfiguration.aidl
@@ -35,10 +35,10 @@
 @VintfStability
 parcelable LeAudioConfiguration {
   android.hardware.bluetooth.audio.LeAudioMode mode;
-  android.hardware.bluetooth.audio.LeAudioConfiguration.LeAuioModeConfig modeConfig;
+  android.hardware.bluetooth.audio.LeAudioConfiguration.LeAudioModeConfig modeConfig;
   android.hardware.bluetooth.audio.CodecType codecType;
   @VintfStability
-  union LeAuioModeConfig {
+  union LeAudioModeConfig {
     android.hardware.bluetooth.audio.UnicastConfiguration unicastConfig;
     android.hardware.bluetooth.audio.BroadcastConfiguration broadcastConfig;
   }
diff --git a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/PresentationPosition.aidl b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/PresentationPosition.aidl
index 810a9a1..7e997e8 100644
--- a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/PresentationPosition.aidl
+++ b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/PresentationPosition.aidl
@@ -36,7 +36,7 @@
 parcelable PresentationPosition {
   long remoteDeviceAudioDelayNanos;
   long transmittedOctets;
-  android.hardware.bluetooth.audio.PresentationPosition.TimeSpec transmittedOctetsTimeStamp;
+  android.hardware.bluetooth.audio.PresentationPosition.TimeSpec transmittedOctetsTimestamp;
   @VintfStability
   parcelable TimeSpec {
     long tvSec;
diff --git a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/SbcAllocMethod.aidl b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/SbcAllocMethod.aidl
index 5170f16..091f6d7 100644
--- a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/SbcAllocMethod.aidl
+++ b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/SbcAllocMethod.aidl
@@ -34,6 +34,6 @@
 package android.hardware.bluetooth.audio;
 @Backing(type="byte") @VintfStability
 enum SbcAllocMethod {
-  ALLOC_MD_S = 1,
-  ALLOC_MD_L = 2,
+  ALLOC_MD_S = 0,
+  ALLOC_MD_L = 1,
 }
diff --git a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/SbcCapabilities.aidl b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/SbcCapabilities.aidl
index ec3aa0f..c8d7e7e 100644
--- a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/SbcCapabilities.aidl
+++ b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/SbcCapabilities.aidl
@@ -35,10 +35,10 @@
 @VintfStability
 parcelable SbcCapabilities {
   int[] sampleRateHz;
-  android.hardware.bluetooth.audio.SbcChannelMode channelMode;
+  android.hardware.bluetooth.audio.SbcChannelMode[] channelMode;
   byte[] blockLength;
   byte[] numSubbands;
-  android.hardware.bluetooth.audio.SbcAllocMethod allocMethod;
+  android.hardware.bluetooth.audio.SbcAllocMethod[] allocMethod;
   byte[] bitsPerSample;
   int minBitpool;
   int maxBitpool;
diff --git a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/SbcChannelMode.aidl b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/SbcChannelMode.aidl
index 88fca4a..6441a99 100644
--- a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/SbcChannelMode.aidl
+++ b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/SbcChannelMode.aidl
@@ -34,9 +34,9 @@
 package android.hardware.bluetooth.audio;
 @Backing(type="byte") @VintfStability
 enum SbcChannelMode {
-  UNKNOWN = 1,
-  JOINT_STEREO = 2,
-  STEREO = 4,
-  DUAL = 8,
-  MONO = 16,
+  UNKNOWN = 0,
+  JOINT_STEREO = 1,
+  STEREO = 2,
+  DUAL = 3,
+  MONO = 4,
 }
diff --git a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/SessionType.aidl b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/SessionType.aidl
index 900ab31..72d7fb2 100644
--- a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/SessionType.aidl
+++ b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/SessionType.aidl
@@ -36,7 +36,7 @@
 enum SessionType {
   UNKNOWN = 0,
   A2DP_SOFTWARE_ENCODING_DATAPATH = 1,
-  A2DP_HARDWARE_OFFLOAD_DATAPATH = 2,
+  A2DP_HARDWARE_OFFLOAD_ENCODING_DATAPATH = 2,
   HEARING_AID_SOFTWARE_ENCODING_DATAPATH = 3,
   LE_AUDIO_SOFTWARE_ENCODING_DATAPATH = 4,
   LE_AUDIO_SOFTWARE_DECODING_DATAPATH = 5,
diff --git a/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/UnicastCapability.aidl b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/UnicastCapability.aidl
new file mode 100644
index 0000000..130fef9
--- /dev/null
+++ b/bluetooth/audio/aidl/aidl_api/android.hardware.bluetooth.audio/current/android/hardware/bluetooth/audio/UnicastCapability.aidl
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.bluetooth.audio;
+@VintfStability
+parcelable UnicastCapability {
+  android.hardware.bluetooth.audio.CodecType codecType;
+  android.hardware.bluetooth.audio.AudioLocation supportedChannel;
+  int deviceCount;
+  int channelCountPerDevice;
+  android.hardware.bluetooth.audio.UnicastCapability.LeAudioCodecCapabilities leAudioCodecCapabilities;
+  @VintfStability
+  parcelable VendorCapabilities {
+    ParcelableHolder extension;
+  }
+  @VintfStability
+  union LeAudioCodecCapabilities {
+    android.hardware.bluetooth.audio.Lc3Capabilities lc3Capabilities;
+    android.hardware.bluetooth.audio.UnicastCapability.VendorCapabilities vendorCapabillities;
+  }
+}
diff --git a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/AacCapabilities.aidl b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/AacCapabilities.aidl
index 4303883..c4153e9 100644
--- a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/AacCapabilities.aidl
+++ b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/AacCapabilities.aidl
@@ -24,11 +24,9 @@
  */
 @VintfStability
 parcelable AacCapabilities {
-    /* bitfield */
-    AacObjectType objectType;
+    AacObjectType[] objectType;
     int[] sampleRateHz;
-    /* bitfield */
-    ChannelMode channelMode;
+    ChannelMode[] channelMode;
     boolean variableBitRateSupported;
     byte[] bitsPerSample;
 }
diff --git a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/AacObjectType.aidl b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/AacObjectType.aidl
index 480e422..4e9958c 100644
--- a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/AacObjectType.aidl
+++ b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/AacObjectType.aidl
@@ -22,17 +22,17 @@
     /**
      * MPEG-2 Low Complexity. Support is Mandatory.
      */
-    MPEG2_LC = 1,
+    MPEG2_LC,
     /**
      * MPEG-4 Low Complexity. Support is Optional.
      */
-    MPEG4_LC = 1 << 1,
+    MPEG4_LC,
     /**
      * MPEG-4 Long Term Prediction. Support is Optional.
      */
-    MPEG4_LTP = 1 << 2,
+    MPEG4_LTP,
     /**
      * MPEG-4 Scalable. Support is Optional.
      */
-    MPEG4_SCALABLE = 1 << 3,
+    MPEG4_SCALABLE,
 }
diff --git a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/AptxCapabilities.aidl b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/AptxCapabilities.aidl
index 6a37fc6..f5605d3 100644
--- a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/AptxCapabilities.aidl
+++ b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/AptxCapabilities.aidl
@@ -24,7 +24,6 @@
 @VintfStability
 parcelable AptxCapabilities {
     int[] sampleRateHz;
-    /* bitfield */
-    ChannelMode channelMode;
+    ChannelMode[] channelMode;
     byte[] bitsPerSample;
 }
diff --git a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/AudioCapabilities.aidl b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/AudioCapabilities.aidl
index 6ed4472..a75c445 100644
--- a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/AudioCapabilities.aidl
+++ b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/AudioCapabilities.aidl
@@ -17,7 +17,7 @@
 package android.hardware.bluetooth.audio;
 
 import android.hardware.bluetooth.audio.CodecCapabilities;
-import android.hardware.bluetooth.audio.LeAudioCapabilities;
+import android.hardware.bluetooth.audio.LeAudioCodecCapabilitiesSetting;
 import android.hardware.bluetooth.audio.PcmCapabilities;
 
 /**
@@ -26,6 +26,6 @@
 @VintfStability
 union AudioCapabilities {
     PcmCapabilities pcmCapabilities;
-    CodecCapabilities codecCapabilities;
-    LeAudioCapabilities leAudioCapabilities;
+    CodecCapabilities a2dpCapabilities;
+    LeAudioCodecCapabilitiesSetting leAudioCapabilities;
 }
diff --git a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/AudioConfiguration.aidl b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/AudioConfiguration.aidl
index ce515b5..81b41dc 100644
--- a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/AudioConfiguration.aidl
+++ b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/AudioConfiguration.aidl
@@ -26,6 +26,6 @@
 @VintfStability
 union AudioConfiguration {
     PcmConfiguration pcmConfig;
-    CodecConfiguration codecConfig;
+    CodecConfiguration a2dpConfig;
     LeAudioConfiguration leAudioConfig;
 }
diff --git a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/BluetoothAudioStatus.aidl b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/BluetoothAudioStatus.aidl
new file mode 100644
index 0000000..ec78445
--- /dev/null
+++ b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/BluetoothAudioStatus.aidl
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.bluetooth.audio;
+
+@VintfStability
+@Backing(type="int")
+enum BluetoothAudioStatus {
+    UNKNOWN = 0,
+    SUCCESS = 1,
+    UNSUPPORTED_CODEC_CONFIGURATION = 2,
+    // General failure
+    FAILURE = 3
+}
diff --git a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/BroadcastCapability.aidl b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/BroadcastCapability.aidl
new file mode 100644
index 0000000..cb63f88
--- /dev/null
+++ b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/BroadcastCapability.aidl
@@ -0,0 +1,43 @@
+/*
+ * Copyright 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.bluetooth.audio;
+
+import android.hardware.bluetooth.audio.AudioLocation;
+import android.hardware.bluetooth.audio.CodecType;
+import android.hardware.bluetooth.audio.Lc3Capabilities;
+import android.hardware.bluetooth.audio.LeAudioMode;
+
+/**
+ * Used to specify the le audio broadcast codec capabilities for hardware offload.
+ */
+@VintfStability
+parcelable BroadcastCapability {
+    @VintfStability
+    parcelable VendorCapabilities {
+        ParcelableHolder extension;
+    }
+    @VintfStability
+    union LeAudioCodecCapabilities {
+        @nullable Lc3Capabilities[] lc3Capabilities;
+        @nullable VendorCapabilities[] vendorCapabillities;
+    }
+    CodecType codecType;
+    AudioLocation supportedChannel;
+    // Supported channel count for each stream
+    int channelCountPerStream;
+    LeAudioCodecCapabilities leAudioCodecCapabilities;
+}
diff --git a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/BroadcastConfiguration.aidl b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/BroadcastConfiguration.aidl
index 07d05f1..cfc9d3a 100644
--- a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/BroadcastConfiguration.aidl
+++ b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/BroadcastConfiguration.aidl
@@ -33,7 +33,7 @@
          * least significant bit to the most significant bit.
          */
         int audioChannelAllocation;
-        LeAudioCodecConfiguration leAudioCondecConfig;
+        LeAudioCodecConfiguration leAudioCodecConfig;
     }
     BroadcastStreamMap[] streamMap;
 }
diff --git a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/ChannelMode.aidl b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/ChannelMode.aidl
index 2df879d..6613872 100644
--- a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/ChannelMode.aidl
+++ b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/ChannelMode.aidl
@@ -19,7 +19,7 @@
 @VintfStability
 @Backing(type="byte")
 enum ChannelMode {
-    UNKNOWN = 1,
-    MONO = 1 << 1,
-    STEREO = 1 << 2,
+    UNKNOWN,
+    MONO,
+    STEREO,
 }
diff --git a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/CodecCapabilities.aidl b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/CodecCapabilities.aidl
index 0eee8cb..5bf0252 100644
--- a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/CodecCapabilities.aidl
+++ b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/CodecCapabilities.aidl
@@ -19,6 +19,7 @@
 import android.hardware.bluetooth.audio.AacCapabilities;
 import android.hardware.bluetooth.audio.AptxCapabilities;
 import android.hardware.bluetooth.audio.CodecType;
+import android.hardware.bluetooth.audio.Lc3Capabilities;
 import android.hardware.bluetooth.audio.LdacCapabilities;
 import android.hardware.bluetooth.audio.SbcCapabilities;
 
@@ -34,6 +35,7 @@
         AacCapabilities aacCapabilities;
         LdacCapabilities ldacCapabilities;
         AptxCapabilities aptxCapabilities;
+        Lc3Capabilities lc3Capabilities;
     }
     CodecType codecType;
     Capabilities capabilities;
diff --git a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/CodecConfiguration.aidl b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/CodecConfiguration.aidl
index fac90f0..9e43f22 100644
--- a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/CodecConfiguration.aidl
+++ b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/CodecConfiguration.aidl
@@ -19,6 +19,7 @@
 import android.hardware.bluetooth.audio.AacConfiguration;
 import android.hardware.bluetooth.audio.AptxConfiguration;
 import android.hardware.bluetooth.audio.CodecType;
+import android.hardware.bluetooth.audio.Lc3Configuration;
 import android.hardware.bluetooth.audio.LdacConfiguration;
 import android.hardware.bluetooth.audio.SbcConfiguration;
 
@@ -34,6 +35,7 @@
         AacConfiguration aacConfig;
         LdacConfiguration ldacConfig;
         AptxConfiguration aptxConfig;
+        Lc3Configuration lc3Config;
     }
     CodecType codecType;
     /**
diff --git a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/IBluetoothAudioProvider.aidl b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/IBluetoothAudioProvider.aidl
index cebd808..6f88f30 100644
--- a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/IBluetoothAudioProvider.aidl
+++ b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/IBluetoothAudioProvider.aidl
@@ -17,9 +17,10 @@
 package android.hardware.bluetooth.audio;
 
 import android.hardware.bluetooth.audio.AudioConfiguration;
+import android.hardware.bluetooth.audio.BluetoothAudioStatus;
 import android.hardware.bluetooth.audio.IBluetoothAudioPort;
 import android.hardware.common.fmq.MQDescriptor;
-import android.hardware.common.fmq.UnsynchronizedWrite;
+import android.hardware.common.fmq.SynchronizedReadWrite;
 
 /**
  * HAL interface from the Bluetooth stack to the Audio HAL
@@ -55,7 +56,7 @@
      *    audioConfig.pcmConfig parameter. Invalid if streaming is offloaded
      *    from/to hardware or on failure
      */
-    MQDescriptor<int, UnsynchronizedWrite> startSession(
+    MQDescriptor<byte, SynchronizedReadWrite> startSession(
             in IBluetoothAudioPort hostIf, in AudioConfiguration audioConfig);
 
     /**
@@ -63,12 +64,22 @@
      *
      * @param status true for SUCCESS or false for FAILURE
      */
-    void streamStarted(in boolean status);
+    void streamStarted(in BluetoothAudioStatus status);
 
     /**
      * Callback for IBluetoothAudioPort.suspendStream()
      *
      * @param status true for SUCCESS or false for FAILURE
      */
-    void streamSuspended(in boolean status);
+    void streamSuspended(in BluetoothAudioStatus status);
+
+    /**
+     * Called when the audio configuration of the stream has been changed.
+     *
+     * @param audioConfig The audio configuration negotiated with the remote
+     *    device. The PCM parameters are set if software based encoding,
+     *    otherwise the correct codec configuration is used for hardware
+     *    encoding.
+     */
+    void updateAudioConfiguration(in AudioConfiguration audioConfig);
 }
diff --git a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/Lc3Capabilities.aidl b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/Lc3Capabilities.aidl
index 1aedefd..fc2f382 100644
--- a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/Lc3Capabilities.aidl
+++ b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/Lc3Capabilities.aidl
@@ -16,6 +16,8 @@
 
 package android.hardware.bluetooth.audio;
 
+import android.hardware.bluetooth.audio.ChannelMode;
+
 /**
  * Used for Hardware Encoding/Decoding LC3 codec capabilities.
  */
@@ -41,4 +43,8 @@
      * Number of blocks of codec frames per single SDU (Service Data Unit)
      */
     byte[] blocksPerSdu;
+    /*
+     * Channel mode used in A2DP special audio, ignored in standard LE Audio mode
+     */
+    ChannelMode[] channelMode;
 }
diff --git a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/Lc3Configuration.aidl b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/Lc3Configuration.aidl
index 77c04c1..e8a93b2 100644
--- a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/Lc3Configuration.aidl
+++ b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/Lc3Configuration.aidl
@@ -16,6 +16,8 @@
 
 package android.hardware.bluetooth.audio;
 
+import android.hardware.bluetooth.audio.ChannelMode;
+
 /**
  * Used for Hardware Encoding/Decoding LC3 codec configuration.
  */
@@ -41,4 +43,8 @@
      * Number of blocks of codec frames per single SDU (Service Data Unit)
      */
     byte blocksPerSdu;
+    /*
+     * Channel mode used in A2DP special audio, ignored in standard LE Audio mode
+     */
+    ChannelMode channelMode;
 }
diff --git a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/LdacCapabilities.aidl b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/LdacCapabilities.aidl
index 44cca7e..1dbec08 100644
--- a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/LdacCapabilities.aidl
+++ b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/LdacCapabilities.aidl
@@ -26,9 +26,7 @@
 @VintfStability
 parcelable LdacCapabilities {
     int[] sampleRateHz;
-    /* bitfiled */
-    LdacChannelMode channelMode;
-    /* bitfiled */
-    LdacQualityIndex qualityIndex;
+    LdacChannelMode[] channelMode;
+    LdacQualityIndex[] qualityIndex;
     byte[] bitsPerSample;
 }
diff --git a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/LdacChannelMode.aidl b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/LdacChannelMode.aidl
index 3acca32..3cc910f 100644
--- a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/LdacChannelMode.aidl
+++ b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/LdacChannelMode.aidl
@@ -22,8 +22,8 @@
 @VintfStability
 @Backing(type="byte")
 enum LdacChannelMode {
-    UNKNOWN = 1,
-    STEREO = 1 << 1,
-    DUAL = 1 << 2,
-    MONO = 1 << 3,
+    UNKNOWN,
+    STEREO,
+    DUAL,
+    MONO,
 }
diff --git a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/LdacQualityIndex.aidl b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/LdacQualityIndex.aidl
index fc532f4..9993b8b 100644
--- a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/LdacQualityIndex.aidl
+++ b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/LdacQualityIndex.aidl
@@ -22,17 +22,17 @@
     /**
      * 990kbps
      */
-    QUALITY_HIGH = 1,
+    HIGH,
     /**
      * 660kbps
      */
-    QUALITY_MID = 1 << 1,
+    MID,
     /**
      * 330kbps
      */
-    QUALITY_LOW = 1 << 2,
+    LOW,
     /**
      * Adaptive Bit Rate mode
      */
-    QUALITY_ABR = 1 << 3,
+    ABR,
 }
diff --git a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/LeAudioCapabilities.aidl b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/LeAudioCapabilities.aidl
deleted file mode 100644
index ea05820..0000000
--- a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/LeAudioCapabilities.aidl
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- * Copyright 2021 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.hardware.bluetooth.audio;
-
-import android.hardware.bluetooth.audio.AudioLocation;
-import android.hardware.bluetooth.audio.CodecType;
-import android.hardware.bluetooth.audio.Lc3Capabilities;
-import android.hardware.bluetooth.audio.LeAudioMode;
-
-/**
- * Used to specify the capabilities of the LC3 codecs supported by Hardware Encoding.
- */
-@VintfStability
-parcelable LeAudioCapabilities {
-    @VintfStability
-    parcelable VendorCapabilities {
-        ParcelableHolder extension;
-    }
-    @VintfStability
-    union LeaudioCodecCapabilities {
-        Lc3Capabilities lc3Capabilities;
-        VendorCapabilities vendorCapabillities;
-    }
-    LeAudioMode mode;
-    CodecType codecType;
-    /*
-     * This is bitfield, if bit N is set, HW Offloader supports N+1 channels at the same time.
-     * Example: 0x27 = 0b00100111: One, two, three or six channels supported.
-     */
-    AudioLocation supportedChannel;
-    int supportedChannelCount;
-    LeaudioCodecCapabilities leaudioCodecCapabilities;
-}
diff --git a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/LeAudioCodecCapabilitiesSetting.aidl b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/LeAudioCodecCapabilitiesSetting.aidl
new file mode 100644
index 0000000..58dac06
--- /dev/null
+++ b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/LeAudioCodecCapabilitiesSetting.aidl
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.bluetooth.audio;
+
+import android.hardware.bluetooth.audio.BroadcastCapability;
+import android.hardware.bluetooth.audio.UnicastCapability;
+
+/**
+ * Used to specify the le audio capabilities for unicast and broadcast hardware offload.
+ */
+@VintfStability
+parcelable LeAudioCodecCapabilitiesSetting {
+    UnicastCapability unicastEncodeCapability;
+    UnicastCapability unicastDecodeCapability;
+    BroadcastCapability broadcastCapability;
+}
diff --git a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/LeAudioConfiguration.aidl b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/LeAudioConfiguration.aidl
index a212c96..515794b 100644
--- a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/LeAudioConfiguration.aidl
+++ b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/LeAudioConfiguration.aidl
@@ -24,7 +24,7 @@
 @VintfStability
 parcelable LeAudioConfiguration {
     @VintfStability
-    union LeAuioModeConfig {
+    union LeAudioModeConfig {
         UnicastConfiguration unicastConfig;
         BroadcastConfiguration broadcastConfig;
     }
@@ -32,6 +32,6 @@
      * The mode of the LE audio
      */
     LeAudioMode mode;
-    LeAuioModeConfig modeConfig;
+    LeAudioModeConfig modeConfig;
     CodecType codecType;
 }
diff --git a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/PresentationPosition.aidl b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/PresentationPosition.aidl
index 17e746f..f3b8aed 100644
--- a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/PresentationPosition.aidl
+++ b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/PresentationPosition.aidl
@@ -44,9 +44,9 @@
      */
     long transmittedOctets;
     /*
-     * transmittedOctetsTimeStamp the value of CLOCK_MONOTONIC
+     * transmittedOctetsTimestamp the value of CLOCK_MONOTONIC
      * corresponding to transmittedOctets. If the software data path is
      * unused (e.g., for Hardware Offload), the value is set to zero.
      */
-    TimeSpec transmittedOctetsTimeStamp;
+    TimeSpec transmittedOctetsTimestamp;
 }
diff --git a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/SbcAllocMethod.aidl b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/SbcAllocMethod.aidl
index 7047e34..1159f30 100644
--- a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/SbcAllocMethod.aidl
+++ b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/SbcAllocMethod.aidl
@@ -22,9 +22,9 @@
     /**
      * SNR
      */
-    ALLOC_MD_S = 1,
+    ALLOC_MD_S,
     /**
      * Loudness
      */
-    ALLOC_MD_L = 1 << 1,
+    ALLOC_MD_L,
 }
diff --git a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/SbcCapabilities.aidl b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/SbcCapabilities.aidl
index cf62ed4..743a1f7 100644
--- a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/SbcCapabilities.aidl
+++ b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/SbcCapabilities.aidl
@@ -25,12 +25,10 @@
 @VintfStability
 parcelable SbcCapabilities {
     int[] sampleRateHz;
-    /* bitfield */
-    SbcChannelMode channelMode;
+    SbcChannelMode[] channelMode;
     byte[] blockLength;
     byte[] numSubbands;
-    /* bitfield */
-    SbcAllocMethod allocMethod;
+    SbcAllocMethod[] allocMethod;
     byte[] bitsPerSample;
     /*
      * range from 2 to 250.
diff --git a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/SbcChannelMode.aidl b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/SbcChannelMode.aidl
index 7eb38cd..68e3267 100644
--- a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/SbcChannelMode.aidl
+++ b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/SbcChannelMode.aidl
@@ -19,9 +19,9 @@
 @VintfStability
 @Backing(type="byte")
 enum SbcChannelMode {
-    UNKNOWN = 1,
-    JOINT_STEREO = 1 << 1,
-    STEREO = 1 << 2,
-    DUAL = 1 << 3,
-    MONO = 1 << 4,
+    UNKNOWN,
+    JOINT_STEREO,
+    STEREO,
+    DUAL,
+    MONO,
 }
diff --git a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/SessionType.aidl b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/SessionType.aidl
index b588869..30faae3 100644
--- a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/SessionType.aidl
+++ b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/SessionType.aidl
@@ -27,7 +27,7 @@
     /**
      * The encoding of AVDTP media is done by HW and there is control only
      */
-    A2DP_HARDWARE_OFFLOAD_DATAPATH,
+    A2DP_HARDWARE_OFFLOAD_ENCODING_DATAPATH,
     /**
      * Used when encoded by Bluetooth Stack and streaming to Hearing Aid
      */
diff --git a/bluetooth/audio/aidl/android/hardware/bluetooth/audio/UnicastCapability.aidl b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/UnicastCapability.aidl
new file mode 100644
index 0000000..cd8a4c1
--- /dev/null
+++ b/bluetooth/audio/aidl/android/hardware/bluetooth/audio/UnicastCapability.aidl
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.bluetooth.audio;
+
+import android.hardware.bluetooth.audio.AudioLocation;
+import android.hardware.bluetooth.audio.CodecType;
+import android.hardware.bluetooth.audio.Lc3Capabilities;
+import android.hardware.bluetooth.audio.LeAudioMode;
+
+/**
+ * Used to specify the le audio unicast codec capabilities for hardware offload.
+ */
+@VintfStability
+parcelable UnicastCapability {
+    @VintfStability
+    parcelable VendorCapabilities {
+        ParcelableHolder extension;
+    }
+    @VintfStability
+    union LeAudioCodecCapabilities {
+        Lc3Capabilities lc3Capabilities;
+        VendorCapabilities vendorCapabillities;
+    }
+    CodecType codecType;
+    AudioLocation supportedChannel;
+    // The number of connected device
+    int deviceCount;
+    // Supported channel count for each device
+    int channelCountPerDevice;
+    LeAudioCodecCapabilities leAudioCodecCapabilities;
+}
diff --git a/bluetooth/audio/aidl/default/A2dpOffloadAudioProvider.cpp b/bluetooth/audio/aidl/default/A2dpOffloadAudioProvider.cpp
new file mode 100644
index 0000000..fc8a911
--- /dev/null
+++ b/bluetooth/audio/aidl/default/A2dpOffloadAudioProvider.cpp
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "BTAudioProviderA2dpHW"
+
+#include "A2dpOffloadAudioProvider.h"
+
+#include <BluetoothAudioCodecs.h>
+#include <BluetoothAudioSessionReport.h>
+#include <android-base/logging.h>
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace audio {
+
+A2dpOffloadAudioProvider::A2dpOffloadAudioProvider() {
+  session_type_ = SessionType::A2DP_HARDWARE_OFFLOAD_ENCODING_DATAPATH;
+}
+
+bool A2dpOffloadAudioProvider::isValid(const SessionType& session_type) {
+  return (session_type == session_type_);
+}
+
+ndk::ScopedAStatus A2dpOffloadAudioProvider::startSession(
+    const std::shared_ptr<IBluetoothAudioPort>& host_if,
+    const AudioConfiguration& audio_config, DataMQDesc* _aidl_return) {
+  if (audio_config.getTag() != AudioConfiguration::a2dpConfig) {
+    LOG(WARNING) << __func__ << " - Invalid Audio Configuration="
+                 << audio_config.toString();
+    *_aidl_return = DataMQDesc();
+    return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+  }
+  if (!BluetoothAudioCodecs::IsOffloadCodecConfigurationValid(
+          session_type_, audio_config.get<AudioConfiguration::a2dpConfig>())) {
+    LOG(WARNING) << __func__ << " - Invalid Audio Configuration="
+                 << audio_config.toString();
+    *_aidl_return = DataMQDesc();
+    return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+  }
+  return BluetoothAudioProvider::startSession(host_if, audio_config,
+                                              _aidl_return);
+}
+
+ndk::ScopedAStatus A2dpOffloadAudioProvider::onSessionReady(
+    DataMQDesc* _aidl_return) {
+  *_aidl_return = DataMQDesc();
+  BluetoothAudioSessionReport::OnSessionStarted(session_type_, stack_iface_,
+                                                nullptr, *audio_config_);
+  return ndk::ScopedAStatus::ok();
+}
+
+}  // namespace audio
+}  // namespace bluetooth
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
\ No newline at end of file
diff --git a/bluetooth/audio/aidl/default/A2dpOffloadAudioProvider.h b/bluetooth/audio/aidl/default/A2dpOffloadAudioProvider.h
new file mode 100644
index 0000000..5934f5b
--- /dev/null
+++ b/bluetooth/audio/aidl/default/A2dpOffloadAudioProvider.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "BluetoothAudioProvider.h"
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace audio {
+
+class A2dpOffloadAudioProvider : public BluetoothAudioProvider {
+ public:
+  A2dpOffloadAudioProvider();
+
+  bool isValid(const SessionType& session_type) override;
+
+  ndk::ScopedAStatus startSession(
+      const std::shared_ptr<IBluetoothAudioPort>& host_if,
+      const AudioConfiguration& audio_config, DataMQDesc* _aidl_return);
+
+ private:
+  ndk::ScopedAStatus onSessionReady(DataMQDesc* _aidl_return) override;
+};
+
+}  // namespace audio
+}  // namespace bluetooth
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
diff --git a/bluetooth/audio/aidl/default/A2dpSoftwareAudioProvider.cpp b/bluetooth/audio/aidl/default/A2dpSoftwareAudioProvider.cpp
new file mode 100644
index 0000000..7e49074
--- /dev/null
+++ b/bluetooth/audio/aidl/default/A2dpSoftwareAudioProvider.cpp
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "BTAudioProviderA2dpSW"
+
+#include "A2dpSoftwareAudioProvider.h"
+
+#include <BluetoothAudioCodecs.h>
+#include <BluetoothAudioSessionReport.h>
+#include <android-base/logging.h>
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace audio {
+
+// Here the buffer size is based on SBC
+static constexpr uint32_t kPcmFrameSize = 4;  // 16 bits per sample / stereo
+// SBC is 128, and here we choose the LCM of 16, 24, and 32
+static constexpr uint32_t kPcmFrameCount = 96;
+static constexpr uint32_t kRtpFrameSize = kPcmFrameSize * kPcmFrameCount;
+// The max counts by 1 tick (20ms) for SBC is about 7. Since using 96 for the
+// PCM counts, here we just choose a greater number
+static constexpr uint32_t kRtpFrameCount = 10;
+static constexpr uint32_t kBufferSize = kRtpFrameSize * kRtpFrameCount;
+static constexpr uint32_t kBufferCount = 2;  // double buffer
+static constexpr uint32_t kDataMqSize = kBufferSize * kBufferCount;
+
+A2dpSoftwareAudioProvider::A2dpSoftwareAudioProvider()
+    : BluetoothAudioProvider(), data_mq_(nullptr) {
+  LOG(INFO) << __func__ << " - size of audio buffer " << kDataMqSize
+            << " byte(s)";
+  std::unique_ptr<DataMQ> data_mq(
+      new DataMQ(kDataMqSize, /* EventFlag */ true));
+  if (data_mq && data_mq->isValid()) {
+    data_mq_ = std::move(data_mq);
+    session_type_ = SessionType::A2DP_SOFTWARE_ENCODING_DATAPATH;
+  } else {
+    ALOGE_IF(!data_mq, "failed to allocate data MQ");
+    ALOGE_IF(data_mq && !data_mq->isValid(), "data MQ is invalid");
+  }
+}
+
+bool A2dpSoftwareAudioProvider::isValid(const SessionType& sessionType) {
+  return (sessionType == session_type_ && data_mq_ && data_mq_->isValid());
+}
+
+ndk::ScopedAStatus A2dpSoftwareAudioProvider::startSession(
+    const std::shared_ptr<IBluetoothAudioPort>& host_if,
+    const AudioConfiguration& audio_config, DataMQDesc* _aidl_return) {
+  if (audio_config.getTag() != AudioConfiguration::pcmConfig) {
+    LOG(WARNING) << __func__ << " - Invalid Audio Configuration="
+                 << audio_config.toString();
+    *_aidl_return = DataMQDesc();
+    return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+  }
+  const PcmConfiguration& pcm_config =
+      audio_config.get<AudioConfiguration::pcmConfig>();
+  if (!BluetoothAudioCodecs::IsSoftwarePcmConfigurationValid(pcm_config)) {
+    LOG(WARNING) << __func__ << " - Unsupported PCM Configuration="
+                 << pcm_config.toString();
+    *_aidl_return = DataMQDesc();
+    return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+  }
+
+  return BluetoothAudioProvider::startSession(host_if, audio_config,
+                                              _aidl_return);
+}
+
+ndk::ScopedAStatus A2dpSoftwareAudioProvider::onSessionReady(
+    DataMQDesc* _aidl_return) {
+  if (data_mq_ == nullptr || !data_mq_->isValid()) {
+    *_aidl_return = DataMQDesc();
+    return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+  }
+  *_aidl_return = data_mq_->dupeDesc();
+  BluetoothAudioSessionReport::OnSessionStarted(session_type_, stack_iface_,
+                                                _aidl_return, *audio_config_);
+  return ndk::ScopedAStatus::ok();
+}
+
+}  // namespace audio
+}  // namespace bluetooth
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
\ No newline at end of file
diff --git a/bluetooth/audio/aidl/default/A2dpSoftwareAudioProvider.h b/bluetooth/audio/aidl/default/A2dpSoftwareAudioProvider.h
new file mode 100644
index 0000000..3bc0a13
--- /dev/null
+++ b/bluetooth/audio/aidl/default/A2dpSoftwareAudioProvider.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "BluetoothAudioProvider.h"
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace audio {
+
+class A2dpSoftwareAudioProvider : public BluetoothAudioProvider {
+ public:
+  A2dpSoftwareAudioProvider();
+
+  bool isValid(const SessionType& sessionType) override;
+
+  ndk::ScopedAStatus startSession(
+      const std::shared_ptr<IBluetoothAudioPort>& host_if,
+      const AudioConfiguration& audio_config, DataMQDesc* _aidl_return);
+
+ private:
+  // audio data queue for software encoding
+  std::unique_ptr<DataMQ> data_mq_;
+
+  ndk::ScopedAStatus onSessionReady(DataMQDesc* _aidl_return) override;
+};
+
+}  // namespace audio
+}  // namespace bluetooth
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
diff --git a/bluetooth/audio/aidl/default/Android.bp b/bluetooth/audio/aidl/default/Android.bp
new file mode 100644
index 0000000..846702f
--- /dev/null
+++ b/bluetooth/audio/aidl/default/Android.bp
@@ -0,0 +1,34 @@
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "hardware_interfaces_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["hardware_interfaces_license"],
+}
+
+cc_library_shared {
+    name: "android.hardware.bluetooth.audio-V1-impl",
+    vendor: true,
+    vintf_fragments: ["bluetooth_audio.xml"],
+    srcs: [
+        "BluetoothAudioProvider.cpp",
+        "BluetoothAudioProviderFactory.cpp",
+        "A2dpOffloadAudioProvider.cpp",
+        "A2dpSoftwareAudioProvider.cpp",
+        "HearingAidAudioProvider.cpp",
+        "LeAudioOffloadAudioProvider.cpp",
+        "LeAudioSoftwareAudioProvider.cpp",
+    ],
+    export_include_dirs: ["."],
+    header_libs: ["libhardware_headers"],
+    shared_libs: [
+        "libbase",
+        "libbinder_ndk",
+        "libcutils",
+        "libfmq",
+        "liblog",
+        "android.hardware.bluetooth.audio-V1-ndk",
+        "libbluetooth_audio_session_aidl",
+    ],
+}
diff --git a/bluetooth/audio/aidl/default/BluetoothAudioProvider.cpp b/bluetooth/audio/aidl/default/BluetoothAudioProvider.cpp
new file mode 100644
index 0000000..c2ffa2e
--- /dev/null
+++ b/bluetooth/audio/aidl/default/BluetoothAudioProvider.cpp
@@ -0,0 +1,138 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "BTAudioProviderStub"
+
+#include "BluetoothAudioProvider.h"
+
+#include <BluetoothAudioSessionReport.h>
+#include <android-base/logging.h>
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace audio {
+
+BluetoothAudioProvider::BluetoothAudioProvider() {
+  death_recipient_ = ::ndk::ScopedAIBinder_DeathRecipient(
+      AIBinder_DeathRecipient_new(binderDiedCallbackAidl));
+}
+
+ndk::ScopedAStatus BluetoothAudioProvider::startSession(
+    const std::shared_ptr<IBluetoothAudioPort>& host_if,
+    const AudioConfiguration& audio_config, DataMQDesc* _aidl_return) {
+  if (host_if == nullptr) {
+    *_aidl_return = DataMQDesc();
+    return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+  }
+  audio_config_ = std::make_unique<AudioConfiguration>(audio_config);
+  stack_iface_ = host_if;
+
+  AIBinder_linkToDeath(stack_iface_->asBinder().get(), death_recipient_.get(),
+                       this);
+
+  onSessionReady(_aidl_return);
+  return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus BluetoothAudioProvider::endSession() {
+  LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_);
+
+  if (stack_iface_ != nullptr) {
+    BluetoothAudioSessionReport::OnSessionEnded(session_type_);
+
+    AIBinder_unlinkToDeath(stack_iface_->asBinder().get(),
+                           death_recipient_.get(), this);
+  } else {
+    LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_)
+              << " has NO session";
+  }
+
+  stack_iface_ = nullptr;
+  audio_config_ = nullptr;
+
+  return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus BluetoothAudioProvider::streamStarted(
+    BluetoothAudioStatus status) {
+  LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_)
+            << ", status=" << toString(status);
+
+  if (stack_iface_ != nullptr) {
+    BluetoothAudioSessionReport::ReportControlStatus(session_type_, true,
+                                                     status);
+  } else {
+    LOG(WARNING) << __func__ << " - SessionType=" << toString(session_type_)
+                 << ", status=" << toString(status) << " has NO session";
+  }
+
+  return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus BluetoothAudioProvider::streamSuspended(
+    BluetoothAudioStatus status) {
+  LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_)
+            << ", status=" << toString(status);
+
+  if (stack_iface_ != nullptr) {
+    BluetoothAudioSessionReport::ReportControlStatus(session_type_, false,
+                                                     status);
+  } else {
+    LOG(WARNING) << __func__ << " - SessionType=" << toString(session_type_)
+                 << ", status=" << toString(status) << " has NO session";
+  }
+  return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus BluetoothAudioProvider::updateAudioConfiguration(
+    const AudioConfiguration& audio_config) {
+  LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_);
+
+  if (stack_iface_ == nullptr || audio_config_ == nullptr) {
+    LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_)
+              << " has NO session";
+    return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+  }
+
+  if (audio_config.getTag() != audio_config_->getTag()) {
+    LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_)
+              << " audio config type is not match";
+    return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+  }
+
+  audio_config_ = std::make_unique<AudioConfiguration>(audio_config);
+  BluetoothAudioSessionReport::ReportAudioConfigChanged(session_type_,
+                                                        *audio_config_);
+  return ndk::ScopedAStatus::ok();
+}
+
+void BluetoothAudioProvider::binderDiedCallbackAidl(void* ptr) {
+  LOG(ERROR) << __func__ << " - BluetoothAudio Service died";
+  auto provider = static_cast<BluetoothAudioProvider*>(ptr);
+  if (provider == nullptr) {
+    LOG(ERROR) << __func__ << ": Null AudioProvider HAL died";
+    return;
+  }
+  provider->endSession();
+}
+
+}  // namespace audio
+}  // namespace bluetooth
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
\ No newline at end of file
diff --git a/bluetooth/audio/aidl/default/BluetoothAudioProvider.h b/bluetooth/audio/aidl/default/BluetoothAudioProvider.h
new file mode 100644
index 0000000..f7acbdf
--- /dev/null
+++ b/bluetooth/audio/aidl/default/BluetoothAudioProvider.h
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#pragma once
+
+#include <aidl/android/hardware/bluetooth/audio/BnBluetoothAudioProvider.h>
+#include <aidl/android/hardware/bluetooth/audio/SessionType.h>
+#include <fmq/AidlMessageQueue.h>
+
+using ::aidl::android::hardware::common::fmq::MQDescriptor;
+using ::aidl::android::hardware::common::fmq::SynchronizedReadWrite;
+using ::android::AidlMessageQueue;
+
+using MqDataType = int8_t;
+using MqDataMode = SynchronizedReadWrite;
+using DataMQ = AidlMessageQueue<MqDataType, MqDataMode>;
+using DataMQDesc = MQDescriptor<MqDataType, MqDataMode>;
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace audio {
+
+class BluetoothAudioProvider : public BnBluetoothAudioProvider {
+ public:
+  BluetoothAudioProvider();
+
+  ndk::ScopedAStatus startSession(
+      const std::shared_ptr<IBluetoothAudioPort>& host_if,
+      const AudioConfiguration& audio_config, DataMQDesc* _aidl_return);
+  ndk::ScopedAStatus endSession();
+  ndk::ScopedAStatus streamStarted(BluetoothAudioStatus status);
+  ndk::ScopedAStatus streamSuspended(BluetoothAudioStatus status);
+  ndk::ScopedAStatus updateAudioConfiguration(
+      const AudioConfiguration& audio_config);
+
+  virtual bool isValid(const SessionType& sessionType) = 0;
+
+ protected:
+  virtual ndk::ScopedAStatus onSessionReady(DataMQDesc* _aidl_return) = 0;
+  static void binderDiedCallbackAidl(void* cookie_ptr);
+
+  ::ndk::ScopedAIBinder_DeathRecipient death_recipient_;
+
+  std::shared_ptr<IBluetoothAudioPort> stack_iface_;
+  std::unique_ptr<AudioConfiguration> audio_config_ = nullptr;
+  SessionType session_type_;
+};
+
+}  // namespace audio
+}  // namespace bluetooth
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
\ No newline at end of file
diff --git a/bluetooth/audio/aidl/default/BluetoothAudioProviderFactory.cpp b/bluetooth/audio/aidl/default/BluetoothAudioProviderFactory.cpp
new file mode 100644
index 0000000..8e6cee7
--- /dev/null
+++ b/bluetooth/audio/aidl/default/BluetoothAudioProviderFactory.cpp
@@ -0,0 +1,124 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "BTAudioProvidersFactory"
+
+#include "BluetoothAudioProviderFactory.h"
+
+#include <BluetoothAudioCodecs.h>
+#include <android-base/logging.h>
+
+#include "A2dpOffloadAudioProvider.h"
+#include "A2dpSoftwareAudioProvider.h"
+#include "BluetoothAudioProvider.h"
+#include "HearingAidAudioProvider.h"
+#include "LeAudioOffloadAudioProvider.h"
+#include "LeAudioSoftwareAudioProvider.h"
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace audio {
+
+BluetoothAudioProviderFactory::BluetoothAudioProviderFactory() {}
+
+ndk::ScopedAStatus BluetoothAudioProviderFactory::openProvider(
+    const SessionType session_type,
+    std::shared_ptr<IBluetoothAudioProvider>* _aidl_return) {
+  LOG(INFO) << __func__ << " - SessionType=" << toString(session_type);
+  std::shared_ptr<BluetoothAudioProvider> provider = nullptr;
+
+  switch (session_type) {
+    case SessionType::A2DP_SOFTWARE_ENCODING_DATAPATH:
+      provider = ndk::SharedRefBase::make<A2dpSoftwareAudioProvider>();
+      break;
+    case SessionType::A2DP_HARDWARE_OFFLOAD_ENCODING_DATAPATH:
+      provider = ndk::SharedRefBase::make<A2dpOffloadAudioProvider>();
+      break;
+    case SessionType::HEARING_AID_SOFTWARE_ENCODING_DATAPATH:
+      provider = ndk::SharedRefBase::make<HearingAidAudioProvider>();
+      break;
+    case SessionType::LE_AUDIO_SOFTWARE_ENCODING_DATAPATH:
+      provider = ndk::SharedRefBase::make<LeAudioSoftwareOutputAudioProvider>();
+      break;
+    case SessionType::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH:
+      provider = ndk::SharedRefBase::make<LeAudioOffloadOutputAudioProvider>();
+      break;
+    case SessionType::LE_AUDIO_SOFTWARE_DECODING_DATAPATH:
+      provider = ndk::SharedRefBase::make<LeAudioSoftwareInputAudioProvider>();
+      break;
+    case SessionType::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH:
+      provider = ndk::SharedRefBase::make<LeAudioOffloadInputAudioProvider>();
+      break;
+    default:
+      provider = nullptr;
+      break;
+  }
+
+  if (provider == nullptr || !provider->isValid(session_type)) {
+    provider = nullptr;
+    LOG(ERROR) << __func__ << " - SessionType=" << toString(session_type);
+    return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+  }
+  *_aidl_return = provider;
+
+  return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus BluetoothAudioProviderFactory::getProviderCapabilities(
+    const SessionType session_type,
+    std::vector<AudioCapabilities>* _aidl_return) {
+  if (session_type == SessionType::A2DP_HARDWARE_OFFLOAD_ENCODING_DATAPATH) {
+    auto codec_capabilities =
+        BluetoothAudioCodecs::GetA2dpOffloadCodecCapabilities(session_type);
+    _aidl_return->resize(codec_capabilities.size());
+    for (int i = 0; i < codec_capabilities.size(); i++) {
+      _aidl_return->at(i).set<AudioCapabilities::a2dpCapabilities>(
+          codec_capabilities[i]);
+    }
+  } else if (session_type ==
+                 SessionType::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH ||
+             session_type ==
+                 SessionType::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
+    std::vector<LeAudioCodecCapabilitiesSetting> db_codec_capabilities =
+        BluetoothAudioCodecs::GetLeAudioOffloadCodecCapabilities(session_type);
+    if (db_codec_capabilities.size()) {
+      _aidl_return->resize(db_codec_capabilities.size());
+      for (int i = 0; i < db_codec_capabilities.size(); ++i) {
+        _aidl_return->at(i).set<AudioCapabilities::leAudioCapabilities>(
+            db_codec_capabilities[i]);
+      }
+    }
+  } else if (session_type != SessionType::UNKNOWN) {
+    auto pcm_capabilities = BluetoothAudioCodecs::GetSoftwarePcmCapabilities();
+    _aidl_return->resize(pcm_capabilities.size());
+    for (int i = 0; i < pcm_capabilities.size(); i++) {
+      _aidl_return->at(i).set<AudioCapabilities::pcmCapabilities>(
+          pcm_capabilities[i]);
+    }
+  }
+
+  LOG(INFO) << __func__ << " - SessionType=" << toString(session_type)
+            << " supports " << _aidl_return->size() << " codecs";
+  return ndk::ScopedAStatus::ok();
+}
+
+}  // namespace audio
+}  // namespace bluetooth
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
\ No newline at end of file
diff --git a/bluetooth/audio/aidl/default/BluetoothAudioProviderFactory.h b/bluetooth/audio/aidl/default/BluetoothAudioProviderFactory.h
new file mode 100644
index 0000000..96d888c
--- /dev/null
+++ b/bluetooth/audio/aidl/default/BluetoothAudioProviderFactory.h
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/bluetooth/audio/BnBluetoothAudioProviderFactory.h>
+
+#include "A2dpOffloadAudioProvider.h"
+#include "A2dpSoftwareAudioProvider.h"
+#include "BluetoothAudioProvider.h"
+#include "HearingAidAudioProvider.h"
+#include "LeAudioOffloadAudioProvider.h"
+#include "LeAudioSoftwareAudioProvider.h"
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace audio {
+
+class BluetoothAudioProviderFactory : public BnBluetoothAudioProviderFactory {
+ public:
+  BluetoothAudioProviderFactory();
+
+  ndk::ScopedAStatus openProvider(
+      const SessionType session_type,
+      std::shared_ptr<IBluetoothAudioProvider>* _aidl_return) override;
+
+  ndk::ScopedAStatus getProviderCapabilities(
+      const SessionType session_type,
+      std::vector<AudioCapabilities>* _aidl_return) override;
+};
+
+}  // namespace audio
+}  // namespace bluetooth
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
diff --git a/bluetooth/audio/aidl/default/HearingAidAudioProvider.cpp b/bluetooth/audio/aidl/default/HearingAidAudioProvider.cpp
new file mode 100644
index 0000000..a993059
--- /dev/null
+++ b/bluetooth/audio/aidl/default/HearingAidAudioProvider.cpp
@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "BTAudioProviderHearingAid"
+
+#include "HearingAidAudioProvider.h"
+
+#include <BluetoothAudioCodecs.h>
+#include <BluetoothAudioSessionReport.h>
+#include <android-base/logging.h>
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace audio {
+
+static constexpr uint32_t kPcmFrameSize = 4;  // 16 bits per sample / stereo
+static constexpr uint32_t kPcmFrameCount = 128;
+static constexpr uint32_t kRtpFrameSize = kPcmFrameSize * kPcmFrameCount;
+static constexpr uint32_t kRtpFrameCount = 7;  // max counts by 1 tick (20ms)
+static constexpr uint32_t kBufferSize = kRtpFrameSize * kRtpFrameCount;
+static constexpr uint32_t kBufferCount = 1;  // single buffer
+static constexpr uint32_t kDataMqSize = kBufferSize * kBufferCount;
+
+HearingAidAudioProvider::HearingAidAudioProvider()
+    : BluetoothAudioProvider(), data_mq_(nullptr) {
+  LOG(INFO) << __func__ << " - size of audio buffer " << kDataMqSize
+            << " byte(s)";
+  std::unique_ptr<DataMQ> data_mq(
+      new DataMQ(kDataMqSize, /* EventFlag */ true));
+  if (data_mq && data_mq->isValid()) {
+    data_mq_ = std::move(data_mq);
+    session_type_ = SessionType::HEARING_AID_SOFTWARE_ENCODING_DATAPATH;
+  } else {
+    ALOGE_IF(!data_mq, "failed to allocate data MQ");
+    ALOGE_IF(data_mq && !data_mq->isValid(), "data MQ is invalid");
+  }
+}
+bool HearingAidAudioProvider::isValid(const SessionType& sessionType) {
+  return (sessionType == session_type_ && data_mq_ && data_mq_->isValid());
+}
+
+ndk::ScopedAStatus HearingAidAudioProvider::startSession(
+    const std::shared_ptr<IBluetoothAudioPort>& host_if,
+    const AudioConfiguration& audio_config, DataMQDesc* _aidl_return) {
+  if (audio_config.getTag() != AudioConfiguration::pcmConfig) {
+    LOG(WARNING) << __func__ << " - Invalid Audio Configuration="
+                 << audio_config.toString();
+    *_aidl_return = DataMQDesc();
+    return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+  }
+  const auto& pcm_config = audio_config.get<AudioConfiguration::pcmConfig>();
+  if (!BluetoothAudioCodecs::IsSoftwarePcmConfigurationValid(pcm_config)) {
+    LOG(WARNING) << __func__ << " - Unsupported PCM Configuration="
+                 << pcm_config.toString();
+    *_aidl_return = DataMQDesc();
+    return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+  }
+
+  return BluetoothAudioProvider::startSession(host_if, audio_config,
+                                              _aidl_return);
+}
+
+ndk::ScopedAStatus HearingAidAudioProvider::onSessionReady(
+    DataMQDesc* _aidl_return) {
+  if (data_mq_ == nullptr || !data_mq_->isValid()) {
+    *_aidl_return = DataMQDesc();
+    return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+  }
+  auto desc = data_mq_->dupeDesc();
+  BluetoothAudioSessionReport::OnSessionStarted(session_type_, stack_iface_,
+                                                &desc, *audio_config_);
+  *_aidl_return = data_mq_->dupeDesc();
+  return ndk::ScopedAStatus::ok();
+}
+
+}  // namespace audio
+}  // namespace bluetooth
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
\ No newline at end of file
diff --git a/bluetooth/audio/aidl/default/HearingAidAudioProvider.h b/bluetooth/audio/aidl/default/HearingAidAudioProvider.h
new file mode 100644
index 0000000..a7e19e9
--- /dev/null
+++ b/bluetooth/audio/aidl/default/HearingAidAudioProvider.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "BluetoothAudioProvider.h"
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace audio {
+
+class HearingAidAudioProvider : public BluetoothAudioProvider {
+ public:
+  HearingAidAudioProvider();
+
+  bool isValid(const SessionType& sessionType) override;
+
+  ndk::ScopedAStatus startSession(
+      const std::shared_ptr<IBluetoothAudioPort>& host_if,
+      const AudioConfiguration& audio_config, DataMQDesc* _aidl_return);
+
+ private:
+  // audio data queue for software encoding
+  std::unique_ptr<DataMQ> data_mq_;
+
+  ndk::ScopedAStatus onSessionReady(DataMQDesc* _aidl_return) override;
+};
+
+}  // namespace audio
+}  // namespace bluetooth
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
diff --git a/bluetooth/audio/aidl/default/LeAudioOffloadAudioProvider.cpp b/bluetooth/audio/aidl/default/LeAudioOffloadAudioProvider.cpp
new file mode 100644
index 0000000..4078783
--- /dev/null
+++ b/bluetooth/audio/aidl/default/LeAudioOffloadAudioProvider.cpp
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "BTAudioProviderLeAudioSW"
+
+#include "LeAudioOffloadAudioProvider.h"
+
+#include <BluetoothAudioCodecs.h>
+#include <BluetoothAudioSessionReport.h>
+#include <android-base/logging.h>
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace audio {
+
+LeAudioOffloadOutputAudioProvider::LeAudioOffloadOutputAudioProvider()
+    : LeAudioOffloadAudioProvider() {
+  session_type_ = SessionType::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH;
+}
+
+LeAudioOffloadInputAudioProvider::LeAudioOffloadInputAudioProvider()
+    : LeAudioOffloadAudioProvider() {
+  session_type_ = SessionType::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH;
+}
+
+LeAudioOffloadAudioProvider::LeAudioOffloadAudioProvider()
+    : BluetoothAudioProvider() {}
+
+bool LeAudioOffloadAudioProvider::isValid(const SessionType& sessionType) {
+  return (sessionType == session_type_);
+}
+
+ndk::ScopedAStatus LeAudioOffloadAudioProvider::startSession(
+    const std::shared_ptr<IBluetoothAudioPort>& host_if,
+    const AudioConfiguration& audio_config, DataMQDesc* _aidl_return) {
+  if (audio_config.getTag() != AudioConfiguration::leAudioConfig) {
+    LOG(WARNING) << __func__ << " - Invalid Audio Configuration="
+                 << audio_config.toString();
+    *_aidl_return = DataMQDesc();
+    return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+  }
+  const auto& le_audio_config =
+      audio_config.get<AudioConfiguration::leAudioConfig>();
+  if (!BluetoothAudioCodecs::IsOffloadLeAudioConfigurationValid(
+          session_type_, le_audio_config)) {
+    LOG(WARNING) << __func__ << " - Unsupported LC3 Offloaded Configuration="
+                 << le_audio_config.toString();
+    *_aidl_return = DataMQDesc();
+    return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+  }
+
+  return BluetoothAudioProvider::startSession(host_if, audio_config,
+                                              _aidl_return);
+}
+
+ndk::ScopedAStatus LeAudioOffloadAudioProvider::onSessionReady(
+    DataMQDesc* _aidl_return) {
+  BluetoothAudioSessionReport::OnSessionStarted(session_type_, stack_iface_,
+                                                nullptr, *audio_config_);
+  *_aidl_return = DataMQDesc();
+  return ndk::ScopedAStatus::ok();
+}
+
+}  // namespace audio
+}  // namespace bluetooth
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
\ No newline at end of file
diff --git a/bluetooth/audio/aidl/default/LeAudioOffloadAudioProvider.h b/bluetooth/audio/aidl/default/LeAudioOffloadAudioProvider.h
new file mode 100644
index 0000000..a27a2e7
--- /dev/null
+++ b/bluetooth/audio/aidl/default/LeAudioOffloadAudioProvider.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "BluetoothAudioProvider.h"
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace audio {
+
+class LeAudioOffloadAudioProvider : public BluetoothAudioProvider {
+ public:
+  LeAudioOffloadAudioProvider();
+
+  bool isValid(const SessionType& sessionType) override;
+
+  ndk::ScopedAStatus startSession(
+      const std::shared_ptr<IBluetoothAudioPort>& host_if,
+      const AudioConfiguration& audio_config, DataMQDesc* _aidl_return);
+
+ private:
+  ndk::ScopedAStatus onSessionReady(DataMQDesc* _aidl_return) override;
+};
+
+class LeAudioOffloadOutputAudioProvider : public LeAudioOffloadAudioProvider {
+ public:
+  LeAudioOffloadOutputAudioProvider();
+};
+
+class LeAudioOffloadInputAudioProvider : public LeAudioOffloadAudioProvider {
+ public:
+  LeAudioOffloadInputAudioProvider();
+};
+
+}  // namespace audio
+}  // namespace bluetooth
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
diff --git a/bluetooth/audio/aidl/default/LeAudioSoftwareAudioProvider.cpp b/bluetooth/audio/aidl/default/LeAudioSoftwareAudioProvider.cpp
new file mode 100644
index 0000000..f9962fd
--- /dev/null
+++ b/bluetooth/audio/aidl/default/LeAudioSoftwareAudioProvider.cpp
@@ -0,0 +1,125 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "BTAudioProviderLeAudioHW"
+
+#include "LeAudioSoftwareAudioProvider.h"
+
+#include <BluetoothAudioCodecs.h>
+#include <BluetoothAudioSessionReport.h>
+#include <android-base/logging.h>
+
+#include <cstdint>
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace audio {
+
+static constexpr uint32_t kBufferOutCount = 2;  // two frame buffer
+static constexpr uint32_t kBufferInCount = 2;   // two frame buffer
+
+inline uint32_t channel_mode_to_channel_count(ChannelMode channel_mode) {
+  switch (channel_mode) {
+    case ChannelMode::MONO:
+      return 1;
+    case ChannelMode::STEREO:
+      return 2;
+    default:
+      return 0;
+  }
+  return 0;
+}
+
+LeAudioSoftwareOutputAudioProvider::LeAudioSoftwareOutputAudioProvider()
+    : LeAudioSoftwareAudioProvider() {
+  session_type_ = SessionType::LE_AUDIO_SOFTWARE_ENCODING_DATAPATH;
+}
+
+LeAudioSoftwareInputAudioProvider::LeAudioSoftwareInputAudioProvider()
+    : LeAudioSoftwareAudioProvider() {
+  session_type_ = SessionType::LE_AUDIO_SOFTWARE_DECODING_DATAPATH;
+}
+
+LeAudioSoftwareAudioProvider::LeAudioSoftwareAudioProvider()
+    : BluetoothAudioProvider(), data_mq_(nullptr) {}
+
+bool LeAudioSoftwareAudioProvider::isValid(const SessionType& sessionType) {
+  return (sessionType == session_type_);
+}
+
+ndk::ScopedAStatus LeAudioSoftwareAudioProvider::startSession(
+    const std::shared_ptr<IBluetoothAudioPort>& host_if,
+    const AudioConfiguration& audio_config, DataMQDesc* _aidl_return) {
+  if (audio_config.getTag() != AudioConfiguration::pcmConfig) {
+    LOG(WARNING) << __func__ << " - Invalid Audio Configuration="
+                 << audio_config.toString();
+    return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+  }
+  const auto& pcm_config = audio_config.get<AudioConfiguration::pcmConfig>();
+  if (!BluetoothAudioCodecs::IsSoftwarePcmConfigurationValid(pcm_config)) {
+    LOG(WARNING) << __func__ << " - Unsupported PCM Configuration="
+                 << pcm_config.toString();
+    return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+  }
+
+  uint32_t buffer_modifier = 0;
+  if (session_type_ == SessionType::LE_AUDIO_SOFTWARE_ENCODING_DATAPATH)
+    buffer_modifier = kBufferOutCount;
+  else if (session_type_ == SessionType::LE_AUDIO_SOFTWARE_DECODING_DATAPATH)
+    buffer_modifier = kBufferInCount;
+
+  uint32_t data_mq_size =
+      (ceil(pcm_config.sampleRateHz) / 1000) *
+      channel_mode_to_channel_count(pcm_config.channelMode) *
+      (pcm_config.bitsPerSample / 8) * (pcm_config.dataIntervalUs / 1000) *
+      buffer_modifier;
+
+  LOG(INFO) << __func__ << " - size of audio buffer " << data_mq_size
+            << " byte(s)";
+
+  std::unique_ptr<DataMQ> temp_data_mq(
+      new DataMQ(data_mq_size, /* EventFlag */ true));
+  if (temp_data_mq == nullptr || !temp_data_mq->isValid()) {
+    ALOGE_IF(!temp_data_mq, "failed to allocate data MQ");
+    ALOGE_IF(temp_data_mq && !temp_data_mq->isValid(), "data MQ is invalid");
+    *_aidl_return = DataMQDesc();
+    return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+  }
+  data_mq_ = std::move(temp_data_mq);
+
+  return BluetoothAudioProvider::startSession(host_if, audio_config,
+                                              _aidl_return);
+}
+
+ndk::ScopedAStatus LeAudioSoftwareAudioProvider::onSessionReady(
+    DataMQDesc* _aidl_return) {
+  if (data_mq_ == nullptr || !data_mq_->isValid()) {
+    *_aidl_return = DataMQDesc();
+    return ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+  }
+  *_aidl_return = data_mq_->dupeDesc();
+  BluetoothAudioSessionReport::OnSessionStarted(session_type_, stack_iface_,
+                                                _aidl_return, *audio_config_);
+  return ndk::ScopedAStatus::ok();
+}
+
+}  // namespace audio
+}  // namespace bluetooth
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
\ No newline at end of file
diff --git a/bluetooth/audio/aidl/default/LeAudioSoftwareAudioProvider.h b/bluetooth/audio/aidl/default/LeAudioSoftwareAudioProvider.h
new file mode 100644
index 0000000..fa58182
--- /dev/null
+++ b/bluetooth/audio/aidl/default/LeAudioSoftwareAudioProvider.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "BluetoothAudioProvider.h"
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace audio {
+
+class LeAudioSoftwareAudioProvider : public BluetoothAudioProvider {
+ public:
+  LeAudioSoftwareAudioProvider();
+
+  bool isValid(const SessionType& sessionType) override;
+
+  ndk::ScopedAStatus startSession(
+      const std::shared_ptr<IBluetoothAudioPort>& host_if,
+      const AudioConfiguration& audio_config, DataMQDesc* _aidl_return);
+
+ private:
+  // audio data queue for software encoding
+  std::unique_ptr<DataMQ> data_mq_;
+
+  ndk::ScopedAStatus onSessionReady(DataMQDesc* _aidl_return) override;
+};
+
+class LeAudioSoftwareOutputAudioProvider : public LeAudioSoftwareAudioProvider {
+ public:
+  LeAudioSoftwareOutputAudioProvider();
+};
+
+class LeAudioSoftwareInputAudioProvider : public LeAudioSoftwareAudioProvider {
+ public:
+  LeAudioSoftwareInputAudioProvider();
+};
+
+}  // namespace audio
+}  // namespace bluetooth
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
\ No newline at end of file
diff --git a/bluetooth/audio/aidl/default/bluetooth_audio.xml b/bluetooth/audio/aidl/default/bluetooth_audio.xml
new file mode 100644
index 0000000..1859a1a
--- /dev/null
+++ b/bluetooth/audio/aidl/default/bluetooth_audio.xml
@@ -0,0 +1,6 @@
+<manifest version="1.0" type="device">
+    <hal format="aidl">
+        <name>android.hardware.bluetooth.audio</name>
+        <fqname>IBluetoothAudioProviderFactory/default</fqname>
+    </hal>
+</manifest>
\ No newline at end of file
diff --git a/bluetooth/audio/utils/Android.bp b/bluetooth/audio/utils/Android.bp
index 4f712bf..974357e 100644
--- a/bluetooth/audio/utils/Android.bp
+++ b/bluetooth/audio/utils/Android.bp
@@ -32,5 +32,30 @@
         "libhidlbase",
         "liblog",
         "libutils",
+        "libbluetooth_audio_session_aidl",
+    ],
+}
+
+cc_library_shared {
+    name: "libbluetooth_audio_session_aidl",
+    vendor: true,
+    srcs: [
+        "aidl_session/BluetoothAudioCodecs.cpp",
+        "aidl_session/BluetoothAudioSession.cpp",
+        "aidl_session/HidlToAidlMiddleware.cpp",
+    ],
+    export_include_dirs: ["aidl_session/"],
+    header_libs: ["libhardware_headers"],
+    shared_libs: [
+        "android.hardware.bluetooth.audio@2.0",
+        "android.hardware.bluetooth.audio@2.1",
+        "android.hardware.bluetooth.audio@2.2",
+        "libbase",
+        "libcutils",
+        "libbinder_ndk",
+        "libfmq",
+        "liblog",
+        "android.hardware.bluetooth.audio-V1-ndk",
+        "libhidlbase",
     ],
 }
diff --git a/bluetooth/audio/utils/aidl_session/BluetoothAudioCodecs.cpp b/bluetooth/audio/utils/aidl_session/BluetoothAudioCodecs.cpp
new file mode 100644
index 0000000..92cd0f5
--- /dev/null
+++ b/bluetooth/audio/utils/aidl_session/BluetoothAudioCodecs.cpp
@@ -0,0 +1,489 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "BTAudioCodecsAidl"
+
+#include "BluetoothAudioCodecs.h"
+
+#include <aidl/android/hardware/bluetooth/audio/AacCapabilities.h>
+#include <aidl/android/hardware/bluetooth/audio/AacObjectType.h>
+#include <aidl/android/hardware/bluetooth/audio/AptxCapabilities.h>
+#include <aidl/android/hardware/bluetooth/audio/ChannelMode.h>
+#include <aidl/android/hardware/bluetooth/audio/LdacCapabilities.h>
+#include <aidl/android/hardware/bluetooth/audio/LdacChannelMode.h>
+#include <aidl/android/hardware/bluetooth/audio/LdacQualityIndex.h>
+#include <aidl/android/hardware/bluetooth/audio/LeAudioConfiguration.h>
+#include <aidl/android/hardware/bluetooth/audio/SbcCapabilities.h>
+#include <aidl/android/hardware/bluetooth/audio/SbcChannelMode.h>
+#include <android-base/logging.h>
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace audio {
+
+static const PcmCapabilities kDefaultSoftwarePcmCapabilities = {
+    .sampleRateHz = {16000, 24000, 44100, 48000, 88200, 96000},
+    .channelMode = {ChannelMode::MONO, ChannelMode::STEREO},
+    .bitsPerSample = {16, 24, 32},
+    .dataIntervalUs = {},
+};
+
+static const SbcCapabilities kDefaultOffloadSbcCapability = {
+    .sampleRateHz = {44100},
+    .channelMode = {SbcChannelMode::MONO, SbcChannelMode::JOINT_STEREO},
+    .blockLength = {4, 8, 12, 16},
+    .numSubbands = {8},
+    .allocMethod = {SbcAllocMethod::ALLOC_MD_L},
+    .bitsPerSample = {16},
+    .minBitpool = 2,
+    .maxBitpool = 53};
+
+static const AacCapabilities kDefaultOffloadAacCapability = {
+    .objectType = {AacObjectType::MPEG2_LC},
+    .sampleRateHz = {44100},
+    .channelMode = {ChannelMode::STEREO},
+    .variableBitRateSupported = true,
+    .bitsPerSample = {16}};
+
+static const LdacCapabilities kDefaultOffloadLdacCapability = {
+    .sampleRateHz = {44100, 48000, 88200, 96000},
+    .channelMode = {LdacChannelMode::DUAL, LdacChannelMode::STEREO},
+    .qualityIndex = {LdacQualityIndex::HIGH},
+    .bitsPerSample = {16, 24, 32}};
+
+static const AptxCapabilities kDefaultOffloadAptxCapability = {
+    .sampleRateHz = {44100, 48000},
+    .channelMode = {ChannelMode::STEREO},
+    .bitsPerSample = {16},
+};
+
+static const AptxCapabilities kDefaultOffloadAptxHdCapability = {
+    .sampleRateHz = {44100, 48000},
+    .channelMode = {ChannelMode::STEREO},
+    .bitsPerSample = {24},
+};
+
+static const Lc3Capabilities kDefaultOffloadLc3Capability = {
+    .samplingFrequencyHz = {44100, 48000},
+    .frameDurationUs = {7500, 10000},
+    .channelMode = {ChannelMode::MONO, ChannelMode::STEREO},
+};
+
+const std::vector<CodecCapabilities> kDefaultOffloadA2dpCodecCapabilities = {
+    {.codecType = CodecType::SBC, .capabilities = {}},
+    {.codecType = CodecType::AAC, .capabilities = {}},
+    {.codecType = CodecType::LDAC, .capabilities = {}},
+    {.codecType = CodecType::APTX, .capabilities = {}},
+    {.codecType = CodecType::APTX_HD, .capabilities = {}},
+    {.codecType = CodecType::LC3, .capabilities = {}}};
+
+std::vector<LeAudioCodecCapabilitiesSetting> kDefaultOffloadLeAudioCapabilities;
+
+static const UnicastCapability kInvalidUnicastCapability = {
+    .codecType = CodecType::UNKNOWN};
+
+static const BroadcastCapability kInvalidBroadcastCapability = {
+    .codecType = CodecType::UNKNOWN};
+
+// Default Supported Codecs
+// LC3 16_1: sample rate: 16 kHz, frame duration: 7.5 ms, octets per frame: 30
+static const Lc3Capabilities kLc3Capability_16_1 = {
+    .samplingFrequencyHz = {16000},
+    .frameDurationUs = {7500},
+    .octetsPerFrame = {30}};
+
+// Default Supported Codecs
+// LC3 16_2: sample rate: 16 kHz, frame duration: 10 ms, octets per frame: 40
+static const Lc3Capabilities kLc3Capability_16_2 = {
+    .samplingFrequencyHz = {16000},
+    .frameDurationUs = {10000},
+    .octetsPerFrame = {40}};
+
+// Default Supported Codecs
+// LC3 48_4: sample rate: 48 kHz, frame duration: 10 ms, octets per frame: 120
+static const Lc3Capabilities kLc3Capability_48_4 = {
+    .samplingFrequencyHz = {48000},
+    .frameDurationUs = {10000},
+    .octetsPerFrame = {120}};
+
+static const std::vector<Lc3Capabilities> supportedLc3CapabilityList = {
+    kLc3Capability_48_4, kLc3Capability_16_2, kLc3Capability_16_1};
+
+static AudioLocation stereoAudio = static_cast<AudioLocation>(
+    static_cast<uint8_t>(AudioLocation::FRONT_LEFT) |
+    static_cast<uint8_t>(AudioLocation::FRONT_RIGHT));
+static AudioLocation monoAudio = AudioLocation::UNKNOWN;
+
+// Stores the supported setting of audio location, connected device, and the
+// channel count for each device
+std::vector<std::tuple<AudioLocation, uint8_t, uint8_t>>
+    supportedDeviceSetting = {std::make_tuple(stereoAudio, 2, 1),
+                              std::make_tuple(monoAudio, 1, 2),
+                              std::make_tuple(monoAudio, 1, 1)};
+
+template <class T>
+bool BluetoothAudioCodecs::ContainedInVector(
+    const std::vector<T>& vector, const typename identity<T>::type& target) {
+  return std::find(vector.begin(), vector.end(), target) != vector.end();
+}
+
+bool BluetoothAudioCodecs::IsOffloadSbcConfigurationValid(
+    const CodecConfiguration::CodecSpecific& codec_specific) {
+  if (codec_specific.getTag() != CodecConfiguration::CodecSpecific::sbcConfig) {
+    LOG(WARNING) << __func__
+                 << ": Invalid CodecSpecific=" << codec_specific.toString();
+    return false;
+  }
+  const SbcConfiguration sbc_data =
+      codec_specific.get<CodecConfiguration::CodecSpecific::sbcConfig>();
+
+  if (ContainedInVector(kDefaultOffloadSbcCapability.sampleRateHz,
+                        sbc_data.sampleRateHz) &&
+      ContainedInVector(kDefaultOffloadSbcCapability.blockLength,
+                        sbc_data.blockLength) &&
+      ContainedInVector(kDefaultOffloadSbcCapability.numSubbands,
+                        sbc_data.numSubbands) &&
+      ContainedInVector(kDefaultOffloadSbcCapability.bitsPerSample,
+                        sbc_data.bitsPerSample) &&
+      ContainedInVector(kDefaultOffloadSbcCapability.channelMode,
+                        sbc_data.channelMode) &&
+      ContainedInVector(kDefaultOffloadSbcCapability.allocMethod,
+                        sbc_data.allocMethod) &&
+      sbc_data.minBitpool <= sbc_data.maxBitpool &&
+      kDefaultOffloadSbcCapability.minBitpool <= sbc_data.minBitpool &&
+      kDefaultOffloadSbcCapability.maxBitpool >= sbc_data.maxBitpool) {
+    return true;
+  }
+  LOG(WARNING) << __func__
+               << ": Unsupported CodecSpecific=" << codec_specific.toString();
+  return false;
+}
+
+bool BluetoothAudioCodecs::IsOffloadAacConfigurationValid(
+    const CodecConfiguration::CodecSpecific& codec_specific) {
+  if (codec_specific.getTag() != CodecConfiguration::CodecSpecific::aacConfig) {
+    LOG(WARNING) << __func__
+                 << ": Invalid CodecSpecific=" << codec_specific.toString();
+    return false;
+  }
+  const AacConfiguration aac_data =
+      codec_specific.get<CodecConfiguration::CodecSpecific::aacConfig>();
+
+  if (ContainedInVector(kDefaultOffloadAacCapability.sampleRateHz,
+                        aac_data.sampleRateHz) &&
+      ContainedInVector(kDefaultOffloadAacCapability.bitsPerSample,
+                        aac_data.bitsPerSample) &&
+      ContainedInVector(kDefaultOffloadAacCapability.channelMode,
+                        aac_data.channelMode) &&
+      ContainedInVector(kDefaultOffloadAacCapability.objectType,
+                        aac_data.objectType) &&
+      (!aac_data.variableBitRateEnabled ||
+       kDefaultOffloadAacCapability.variableBitRateSupported)) {
+    return true;
+  }
+  LOG(WARNING) << __func__
+               << ": Unsupported CodecSpecific=" << codec_specific.toString();
+  return false;
+}
+
+bool BluetoothAudioCodecs::IsOffloadLdacConfigurationValid(
+    const CodecConfiguration::CodecSpecific& codec_specific) {
+  if (codec_specific.getTag() !=
+      CodecConfiguration::CodecSpecific::ldacConfig) {
+    LOG(WARNING) << __func__
+                 << ": Invalid CodecSpecific=" << codec_specific.toString();
+    return false;
+  }
+  const LdacConfiguration ldac_data =
+      codec_specific.get<CodecConfiguration::CodecSpecific::ldacConfig>();
+
+  if (ContainedInVector(kDefaultOffloadLdacCapability.sampleRateHz,
+                        ldac_data.sampleRateHz) &&
+      ContainedInVector(kDefaultOffloadLdacCapability.bitsPerSample,
+                        ldac_data.bitsPerSample) &&
+      ContainedInVector(kDefaultOffloadLdacCapability.channelMode,
+                        ldac_data.channelMode) &&
+      ContainedInVector(kDefaultOffloadLdacCapability.qualityIndex,
+                        ldac_data.qualityIndex)) {
+    return true;
+  }
+  LOG(WARNING) << __func__
+               << ": Unsupported CodecSpecific=" << codec_specific.toString();
+  return false;
+}
+
+bool BluetoothAudioCodecs::IsOffloadAptxConfigurationValid(
+    const CodecConfiguration::CodecSpecific& codec_specific) {
+  if (codec_specific.getTag() !=
+      CodecConfiguration::CodecSpecific::aptxConfig) {
+    LOG(WARNING) << __func__
+                 << ": Invalid CodecSpecific=" << codec_specific.toString();
+    return false;
+  }
+  const AptxConfiguration aptx_data =
+      codec_specific.get<CodecConfiguration::CodecSpecific::aptxConfig>();
+
+  if (ContainedInVector(kDefaultOffloadAptxCapability.sampleRateHz,
+                        aptx_data.sampleRateHz) &&
+      ContainedInVector(kDefaultOffloadAptxCapability.bitsPerSample,
+                        aptx_data.bitsPerSample) &&
+      ContainedInVector(kDefaultOffloadAptxCapability.channelMode,
+                        aptx_data.channelMode)) {
+    return true;
+  }
+  LOG(WARNING) << __func__
+               << ": Unsupported CodecSpecific=" << codec_specific.toString();
+  return false;
+}
+
+bool BluetoothAudioCodecs::IsOffloadAptxHdConfigurationValid(
+    const CodecConfiguration::CodecSpecific& codec_specific) {
+  if (codec_specific.getTag() !=
+      CodecConfiguration::CodecSpecific::aptxConfig) {
+    LOG(WARNING) << __func__
+                 << ": Invalid CodecSpecific=" << codec_specific.toString();
+    return false;
+  }
+  const AptxConfiguration aptx_data =
+      codec_specific.get<CodecConfiguration::CodecSpecific::aptxConfig>();
+
+  if (ContainedInVector(kDefaultOffloadAptxHdCapability.sampleRateHz,
+                        aptx_data.sampleRateHz) &&
+      ContainedInVector(kDefaultOffloadAptxHdCapability.bitsPerSample,
+                        aptx_data.bitsPerSample) &&
+      ContainedInVector(kDefaultOffloadAptxHdCapability.channelMode,
+                        aptx_data.channelMode)) {
+    return true;
+  }
+  LOG(WARNING) << __func__
+               << ": Unsupported CodecSpecific=" << codec_specific.toString();
+  return false;
+}
+
+bool BluetoothAudioCodecs::IsOffloadLc3ConfigurationValid(
+    const CodecConfiguration::CodecSpecific& codec_specific) {
+  if (codec_specific.getTag() != CodecConfiguration::CodecSpecific::lc3Config) {
+    LOG(WARNING) << __func__
+                 << ": Invalid CodecSpecific=" << codec_specific.toString();
+    return false;
+  }
+  const Lc3Configuration lc3_data =
+      codec_specific.get<CodecConfiguration::CodecSpecific::lc3Config>();
+
+  if (ContainedInVector(kDefaultOffloadLc3Capability.samplingFrequencyHz,
+                        lc3_data.samplingFrequencyHz) &&
+      ContainedInVector(kDefaultOffloadLc3Capability.frameDurationUs,
+                        lc3_data.frameDurationUs) &&
+      ContainedInVector(kDefaultOffloadLc3Capability.channelMode,
+                        lc3_data.channelMode)) {
+    return true;
+  }
+  LOG(WARNING) << __func__
+               << ": Unsupported CodecSpecific=" << codec_specific.toString();
+  return false;
+}
+
+bool BluetoothAudioCodecs::IsOffloadLeAudioConfigurationValid(
+    const SessionType& session_type, const LeAudioConfiguration&) {
+  if (session_type !=
+          SessionType::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH &&
+      session_type !=
+          SessionType::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
+    return false;
+  }
+  return true;
+}
+
+std::vector<PcmCapabilities>
+BluetoothAudioCodecs::GetSoftwarePcmCapabilities() {
+  return {kDefaultSoftwarePcmCapabilities};
+}
+
+std::vector<CodecCapabilities>
+BluetoothAudioCodecs::GetA2dpOffloadCodecCapabilities(
+    const SessionType& session_type) {
+  if (session_type != SessionType::A2DP_HARDWARE_OFFLOAD_ENCODING_DATAPATH) {
+    return {};
+  }
+  std::vector<CodecCapabilities> offload_a2dp_codec_capabilities =
+      kDefaultOffloadA2dpCodecCapabilities;
+  for (auto& codec_capability : offload_a2dp_codec_capabilities) {
+    switch (codec_capability.codecType) {
+      case CodecType::SBC:
+        codec_capability.capabilities
+            .set<CodecCapabilities::Capabilities::sbcCapabilities>(
+                kDefaultOffloadSbcCapability);
+        break;
+      case CodecType::AAC:
+        codec_capability.capabilities
+            .set<CodecCapabilities::Capabilities::aacCapabilities>(
+                kDefaultOffloadAacCapability);
+        break;
+      case CodecType::LDAC:
+        codec_capability.capabilities
+            .set<CodecCapabilities::Capabilities::ldacCapabilities>(
+                kDefaultOffloadLdacCapability);
+        break;
+      case CodecType::APTX:
+        codec_capability.capabilities
+            .set<CodecCapabilities::Capabilities::aptxCapabilities>(
+                kDefaultOffloadAptxCapability);
+        break;
+      case CodecType::APTX_HD:
+        codec_capability.capabilities
+            .set<CodecCapabilities::Capabilities::aptxCapabilities>(
+                kDefaultOffloadAptxHdCapability);
+        break;
+      case CodecType::LC3:
+        codec_capability.capabilities
+            .set<CodecCapabilities::Capabilities::lc3Capabilities>(
+                kDefaultOffloadLc3Capability);
+        break;
+      case CodecType::UNKNOWN:
+        codec_capability = {};
+        break;
+    }
+  }
+  return offload_a2dp_codec_capabilities;
+}
+
+bool BluetoothAudioCodecs::IsSoftwarePcmConfigurationValid(
+    const PcmConfiguration& pcm_config) {
+  if (ContainedInVector(kDefaultSoftwarePcmCapabilities.sampleRateHz,
+                        pcm_config.sampleRateHz) &&
+      ContainedInVector(kDefaultSoftwarePcmCapabilities.bitsPerSample,
+                        pcm_config.bitsPerSample) &&
+      ContainedInVector(kDefaultSoftwarePcmCapabilities.channelMode,
+                        pcm_config.channelMode)
+      // data interval is not checked for now
+      // && pcm_config.dataIntervalUs != 0
+  ) {
+    return true;
+  }
+  LOG(WARNING) << __func__
+               << ": Unsupported CodecSpecific=" << pcm_config.toString();
+  return false;
+}
+
+bool BluetoothAudioCodecs::IsOffloadCodecConfigurationValid(
+    const SessionType& session_type, const CodecConfiguration& codec_config) {
+  if (session_type != SessionType::A2DP_HARDWARE_OFFLOAD_ENCODING_DATAPATH) {
+    LOG(ERROR) << __func__
+               << ": Invalid SessionType=" << toString(session_type);
+    return false;
+  }
+  const CodecConfiguration::CodecSpecific& codec_specific = codec_config.config;
+  switch (codec_config.codecType) {
+    case CodecType::SBC:
+      if (IsOffloadSbcConfigurationValid(codec_specific)) {
+        return true;
+      }
+      break;
+    case CodecType::AAC:
+      if (IsOffloadAacConfigurationValid(codec_specific)) {
+        return true;
+      }
+      break;
+    case CodecType::LDAC:
+      if (IsOffloadLdacConfigurationValid(codec_specific)) {
+        return true;
+      }
+      break;
+    case CodecType::APTX:
+      if (IsOffloadAptxConfigurationValid(codec_specific)) {
+        return true;
+      }
+      break;
+    case CodecType::APTX_HD:
+      if (IsOffloadAptxHdConfigurationValid(codec_specific)) {
+        return true;
+      }
+      break;
+    case CodecType::LC3:
+      if (IsOffloadLc3ConfigurationValid(codec_specific)) {
+        return true;
+      }
+      break;
+    case CodecType::UNKNOWN:
+      break;
+  }
+  return false;
+}
+
+UnicastCapability composeUnicastLc3Capability(
+    AudioLocation audioLocation, uint8_t deviceCnt, uint8_t channelCount,
+    const Lc3Capabilities& capability) {
+  return {
+      .codecType = CodecType::LC3,
+      .supportedChannel = audioLocation,
+      .deviceCount = deviceCnt,
+      .channelCountPerDevice = channelCount,
+      .leAudioCodecCapabilities =
+          UnicastCapability::LeAudioCodecCapabilities(capability),
+  };
+}
+
+std::vector<LeAudioCodecCapabilitiesSetting>
+BluetoothAudioCodecs::GetLeAudioOffloadCodecCapabilities(
+    const SessionType& session_type) {
+  if (session_type !=
+          SessionType::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH &&
+      session_type !=
+          SessionType::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
+    return std::vector<LeAudioCodecCapabilitiesSetting>(0);
+  }
+
+  if (kDefaultOffloadLeAudioCapabilities.empty()) {
+    for (auto [audioLocation, deviceCnt, channelCount] :
+         supportedDeviceSetting) {
+      for (auto capability : supportedLc3CapabilityList) {
+        UnicastCapability lc3Capability = composeUnicastLc3Capability(
+            audioLocation, deviceCnt, channelCount, capability);
+        UnicastCapability lc3MonoDecodeCapability =
+            composeUnicastLc3Capability(monoAudio, 1, 1, capability);
+
+        // Adds the capability for encode only
+        kDefaultOffloadLeAudioCapabilities.push_back(
+            {.unicastEncodeCapability = lc3Capability,
+             .unicastDecodeCapability = kInvalidUnicastCapability,
+             .broadcastCapability = kInvalidBroadcastCapability});
+
+        // Adds the capability for decode only
+        kDefaultOffloadLeAudioCapabilities.push_back(
+            {.unicastEncodeCapability = kInvalidUnicastCapability,
+             .unicastDecodeCapability = lc3Capability,
+             .broadcastCapability = kInvalidBroadcastCapability});
+
+        // Adds the capability for the case that encode and decode exist at the
+        // same time
+        kDefaultOffloadLeAudioCapabilities.push_back(
+            {.unicastEncodeCapability = lc3Capability,
+             .unicastDecodeCapability = lc3MonoDecodeCapability,
+             .broadcastCapability = kInvalidBroadcastCapability});
+      }
+    }
+  }
+
+  return kDefaultOffloadLeAudioCapabilities;
+}
+
+}  // namespace audio
+}  // namespace bluetooth
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
\ No newline at end of file
diff --git a/bluetooth/audio/utils/aidl_session/BluetoothAudioCodecs.h b/bluetooth/audio/utils/aidl_session/BluetoothAudioCodecs.h
new file mode 100644
index 0000000..c542ce5
--- /dev/null
+++ b/bluetooth/audio/utils/aidl_session/BluetoothAudioCodecs.h
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/bluetooth/audio/CodecCapabilities.h>
+#include <aidl/android/hardware/bluetooth/audio/CodecConfiguration.h>
+#include <aidl/android/hardware/bluetooth/audio/Lc3Configuration.h>
+#include <aidl/android/hardware/bluetooth/audio/LeAudioCodecCapabilitiesSetting.h>
+#include <aidl/android/hardware/bluetooth/audio/LeAudioConfiguration.h>
+#include <aidl/android/hardware/bluetooth/audio/PcmCapabilities.h>
+#include <aidl/android/hardware/bluetooth/audio/PcmConfiguration.h>
+#include <aidl/android/hardware/bluetooth/audio/SessionType.h>
+
+#include <vector>
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace audio {
+
+class BluetoothAudioCodecs {
+ public:
+  static std::vector<PcmCapabilities> GetSoftwarePcmCapabilities();
+  static std::vector<CodecCapabilities> GetA2dpOffloadCodecCapabilities(
+      const SessionType& session_type);
+
+  static bool IsSoftwarePcmConfigurationValid(
+      const PcmConfiguration& pcm_config);
+  static bool IsOffloadCodecConfigurationValid(
+      const SessionType& session_type, const CodecConfiguration& codec_config);
+
+  static bool IsOffloadLeAudioConfigurationValid(
+      const SessionType& session_type, const Lc3Configuration& codec_config);
+
+  static bool IsOffloadLeAudioConfigurationValid(
+      const SessionType& session_type,
+      const LeAudioConfiguration& codec_config);
+
+  static std::vector<LeAudioCodecCapabilitiesSetting>
+  GetLeAudioOffloadCodecCapabilities(const SessionType& session_type);
+
+ private:
+  template <typename T>
+  struct identity {
+    typedef T type;
+  };
+  template <class T>
+  static bool ContainedInVector(const std::vector<T>& vector,
+                                const typename identity<T>::type& target);
+  template <class T>
+  static bool ContainedInBitmask(const T& bitmask, const T& target);
+  static bool IsSingleBit(uint32_t bitmasks, uint32_t bitfield);
+  static bool IsOffloadSbcConfigurationValid(
+      const CodecConfiguration::CodecSpecific& codec_specific);
+  static bool IsOffloadAacConfigurationValid(
+      const CodecConfiguration::CodecSpecific& codec_specific);
+  static bool IsOffloadLdacConfigurationValid(
+      const CodecConfiguration::CodecSpecific& codec_specific);
+  static bool IsOffloadAptxConfigurationValid(
+      const CodecConfiguration::CodecSpecific& codec_specific);
+  static bool IsOffloadAptxHdConfigurationValid(
+      const CodecConfiguration::CodecSpecific& codec_specific);
+  static bool IsOffloadLc3ConfigurationValid(
+      const CodecConfiguration::CodecSpecific& codec_specific);
+  static bool IsOffloadLeAudioConfigurationValid(
+      const SessionType& session_type, const LeAudioCodecConfiguration&);
+};
+
+}  // namespace audio
+}  // namespace bluetooth
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
diff --git a/bluetooth/audio/utils/aidl_session/BluetoothAudioSession.cpp b/bluetooth/audio/utils/aidl_session/BluetoothAudioSession.cpp
new file mode 100644
index 0000000..95e473e
--- /dev/null
+++ b/bluetooth/audio/utils/aidl_session/BluetoothAudioSession.cpp
@@ -0,0 +1,581 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <sys/types.h>
+#define LOG_TAG "BTAudioSessionAidl"
+
+#include <android-base/logging.h>
+#include <android-base/stringprintf.h>
+#include <android/binder_manager.h>
+
+#include "BluetoothAudioSession.h"
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace audio {
+
+static constexpr int kFmqSendTimeoutMs = 1000;  // 1000 ms timeout for sending
+static constexpr int kFmqReceiveTimeoutMs =
+    1000;                               // 1000 ms timeout for receiving
+static constexpr int kWritePollMs = 1;  // polled non-blocking interval
+static constexpr int kReadPollMs = 1;   // polled non-blocking interval
+
+const CodecConfiguration BluetoothAudioSession::kInvalidCodecConfiguration = {};
+const LeAudioConfiguration kInvalidLeAudioConfiguration = {};
+AudioConfiguration BluetoothAudioSession::invalidSoftwareAudioConfiguration =
+    {};
+AudioConfiguration BluetoothAudioSession::invalidOffloadAudioConfiguration = {};
+AudioConfiguration BluetoothAudioSession::invalidLeOffloadAudioConfig = {};
+
+BluetoothAudioSession::BluetoothAudioSession(const SessionType& session_type)
+    : session_type_(session_type), stack_iface_(nullptr), data_mq_(nullptr) {
+  invalidSoftwareAudioConfiguration.set<AudioConfiguration::pcmConfig>(
+      kInvalidPcmConfiguration);
+  invalidOffloadAudioConfiguration.set<AudioConfiguration::a2dpConfig>(
+      kInvalidCodecConfiguration);
+  invalidLeOffloadAudioConfig.set<AudioConfiguration::leAudioConfig>(
+      kInvalidLeAudioConfiguration);
+}
+
+/***
+ *
+ * Callback methods
+ *
+ ***/
+
+void BluetoothAudioSession::OnSessionStarted(
+    const std::shared_ptr<IBluetoothAudioPort> stack_iface,
+    const DataMQDesc* mq_desc, const AudioConfiguration& audio_config) {
+  std::lock_guard<std::recursive_mutex> guard(mutex_);
+  if (stack_iface == nullptr) {
+    LOG(ERROR) << __func__ << " - SessionType=" << toString(session_type_)
+               << ", IBluetoothAudioPort Invalid";
+  } else if (!UpdateAudioConfig(audio_config)) {
+    LOG(ERROR) << __func__ << " - SessionType=" << toString(session_type_)
+               << ", AudioConfiguration=" << audio_config.toString()
+               << " Invalid";
+  } else if (!UpdateDataPath(mq_desc)) {
+    LOG(ERROR) << __func__ << " - SessionType=" << toString(session_type_)
+               << " MqDescriptor Invalid";
+    if (session_type_ == SessionType::A2DP_HARDWARE_OFFLOAD_ENCODING_DATAPATH) {
+      audio_config_ = std::make_unique<AudioConfiguration>(
+          invalidOffloadAudioConfiguration);
+    } else {
+      audio_config_ = std::make_unique<AudioConfiguration>(
+          invalidSoftwareAudioConfiguration);
+    }
+  } else {
+    stack_iface_ = stack_iface;
+    LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_)
+              << ", AudioConfiguration=" << audio_config.toString();
+    ReportSessionStatus();
+  }
+}
+
+void BluetoothAudioSession::OnSessionEnded() {
+  std::lock_guard<std::recursive_mutex> guard(mutex_);
+  bool toggled = IsSessionReady();
+  LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_);
+  if (session_type_ == SessionType::A2DP_HARDWARE_OFFLOAD_ENCODING_DATAPATH) {
+    audio_config_ =
+        std::make_unique<AudioConfiguration>(invalidOffloadAudioConfiguration);
+  } else {
+    audio_config_ =
+        std::make_unique<AudioConfiguration>(invalidSoftwareAudioConfiguration);
+  }
+  stack_iface_ = nullptr;
+  UpdateDataPath(nullptr);
+  if (toggled) {
+    ReportSessionStatus();
+  }
+}
+
+/***
+ *
+ * Util methods
+ *
+ ***/
+
+const AudioConfiguration& BluetoothAudioSession::GetAudioConfig() {
+  std::lock_guard<std::recursive_mutex> guard(mutex_);
+  if (!IsSessionReady()) {
+    if (session_type_ == SessionType::A2DP_HARDWARE_OFFLOAD_ENCODING_DATAPATH) {
+      return invalidOffloadAudioConfiguration;
+    } else {
+      return invalidSoftwareAudioConfiguration;
+    }
+    switch (session_type_) {
+      case SessionType::A2DP_HARDWARE_OFFLOAD_ENCODING_DATAPATH:
+        return invalidOffloadAudioConfiguration;
+      case SessionType::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH:
+      case SessionType::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH:
+        return invalidLeOffloadAudioConfig;
+      default:
+        return invalidSoftwareAudioConfiguration;
+    }
+  }
+  return *audio_config_;
+}
+
+void BluetoothAudioSession::ReportAudioConfigChanged(
+    const AudioConfiguration& audio_config) {
+  if (session_type_ !=
+          SessionType::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH &&
+      session_type_ !=
+          SessionType::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
+    return;
+  }
+  std::lock_guard<std::recursive_mutex> guard(mutex_);
+  audio_config_ = std::make_unique<AudioConfiguration>(audio_config);
+  if (observers_.empty()) {
+    LOG(WARNING) << __func__ << " - SessionType=" << toString(session_type_)
+                 << " has NO port state observer";
+    return;
+  }
+  for (auto& observer : observers_) {
+    uint16_t cookie = observer.first;
+    std::shared_ptr<struct PortStatusCallbacks> cb = observer.second;
+    LOG(INFO) << __func__ << " for SessionType=" << toString(session_type_)
+              << ", bluetooth_audio=0x"
+              << ::android::base::StringPrintf("%04x", cookie);
+    if (cb->audio_configuration_changed_cb_ != nullptr) {
+      cb->audio_configuration_changed_cb_(cookie);
+    }
+  }
+}
+
+bool BluetoothAudioSession::IsSessionReady() {
+  std::lock_guard<std::recursive_mutex> guard(mutex_);
+
+  bool is_mq_valid =
+      (session_type_ == SessionType::A2DP_HARDWARE_OFFLOAD_ENCODING_DATAPATH ||
+       session_type_ ==
+           SessionType::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH ||
+       session_type_ ==
+           SessionType::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH ||
+       (data_mq_ != nullptr && data_mq_->isValid()));
+  return stack_iface_ != nullptr && is_mq_valid;
+}
+
+/***
+ *
+ * Status callback methods
+ *
+ ***/
+
+uint16_t BluetoothAudioSession::RegisterStatusCback(
+    const PortStatusCallbacks& callbacks) {
+  std::lock_guard<std::recursive_mutex> guard(mutex_);
+  uint16_t cookie = ObserversCookieGetInitValue(session_type_);
+  uint16_t cookie_upper_bound = ObserversCookieGetUpperBound(session_type_);
+
+  while (cookie < cookie_upper_bound) {
+    if (observers_.find(cookie) == observers_.end()) {
+      break;
+    }
+    ++cookie;
+  }
+  if (cookie >= cookie_upper_bound) {
+    LOG(ERROR) << __func__ << " - SessionType=" << toString(session_type_)
+               << " has " << observers_.size()
+               << " observers already (No Resource)";
+    return kObserversCookieUndefined;
+  }
+  std::shared_ptr<PortStatusCallbacks> cb =
+      std::make_shared<PortStatusCallbacks>();
+  *cb = callbacks;
+  observers_[cookie] = cb;
+  return cookie;
+}
+
+void BluetoothAudioSession::UnregisterStatusCback(uint16_t cookie) {
+  std::lock_guard<std::recursive_mutex> guard(mutex_);
+  if (observers_.erase(cookie) != 1) {
+    LOG(WARNING) << __func__ << " - SessionType=" << toString(session_type_)
+                 << " no such provider=0x"
+                 << ::android::base::StringPrintf("%04x", cookie);
+  }
+}
+
+/***
+ *
+ * Stream methods
+ *
+ ***/
+
+bool BluetoothAudioSession::StartStream() {
+  std::lock_guard<std::recursive_mutex> guard(mutex_);
+  if (!IsSessionReady()) {
+    LOG(DEBUG) << __func__ << " - SessionType=" << toString(session_type_)
+               << " has NO session";
+    return false;
+  }
+  auto hal_retval = stack_iface_->startStream();
+  if (!hal_retval.isOk()) {
+    LOG(WARNING) << __func__ << " - IBluetoothAudioPort SessionType="
+                 << toString(session_type_) << " failed";
+    return false;
+  }
+  return true;
+}
+
+bool BluetoothAudioSession::SuspendStream() {
+  std::lock_guard<std::recursive_mutex> guard(mutex_);
+  if (!IsSessionReady()) {
+    LOG(DEBUG) << __func__ << " - SessionType=" << toString(session_type_)
+               << " has NO session";
+    return false;
+  }
+  auto hal_retval = stack_iface_->suspendStream();
+  if (!hal_retval.isOk()) {
+    LOG(WARNING) << __func__ << " - IBluetoothAudioPort SessionType="
+                 << toString(session_type_) << " failed";
+    return false;
+  }
+  return true;
+}
+
+void BluetoothAudioSession::StopStream() {
+  std::lock_guard<std::recursive_mutex> guard(mutex_);
+  if (!IsSessionReady()) {
+    return;
+  }
+  auto hal_retval = stack_iface_->stopStream();
+  if (!hal_retval.isOk()) {
+    LOG(WARNING) << __func__ << " - IBluetoothAudioPort SessionType="
+                 << toString(session_type_) << " failed";
+  }
+}
+
+/***
+ *
+ * Private methods
+ *
+ ***/
+
+bool BluetoothAudioSession::UpdateDataPath(const DataMQDesc* mq_desc) {
+  if (mq_desc == nullptr) {
+    // usecase of reset by nullptr
+    data_mq_ = nullptr;
+    return true;
+  }
+  std::unique_ptr<DataMQ> temp_mq;
+  temp_mq.reset(new DataMQ(*mq_desc));
+  if (!temp_mq || !temp_mq->isValid()) {
+    data_mq_ = nullptr;
+    return false;
+  }
+  data_mq_ = std::move(temp_mq);
+  return true;
+}
+
+bool BluetoothAudioSession::UpdateAudioConfig(
+    const AudioConfiguration& audio_config) {
+  bool is_software_session =
+      (session_type_ == SessionType::A2DP_SOFTWARE_ENCODING_DATAPATH ||
+       session_type_ == SessionType::HEARING_AID_SOFTWARE_ENCODING_DATAPATH ||
+       session_type_ == SessionType::LE_AUDIO_SOFTWARE_DECODING_DATAPATH ||
+       session_type_ == SessionType::LE_AUDIO_SOFTWARE_ENCODING_DATAPATH);
+  bool is_offload_a2dp_session =
+      (session_type_ == SessionType::A2DP_HARDWARE_OFFLOAD_ENCODING_DATAPATH);
+  bool is_offload_le_audio_session =
+      (session_type_ ==
+           SessionType::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH ||
+       session_type_ ==
+           SessionType::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH);
+  auto audio_config_tag = audio_config.getTag();
+  bool is_software_audio_config =
+      (is_software_session &&
+       audio_config_tag == AudioConfiguration::pcmConfig);
+  bool is_a2dp_offload_audio_config =
+      (is_offload_a2dp_session &&
+       audio_config_tag == AudioConfiguration::a2dpConfig);
+  bool is_le_audio_offload_audio_config =
+      (is_offload_le_audio_session &&
+       audio_config_tag == AudioConfiguration::leAudioConfig);
+  if (!is_software_audio_config && !is_a2dp_offload_audio_config &&
+      !is_le_audio_offload_audio_config) {
+    return false;
+  }
+  audio_config_ = std::make_unique<AudioConfiguration>(audio_config);
+  return true;
+}
+
+void BluetoothAudioSession::ReportSessionStatus() {
+  // This is locked already by OnSessionStarted / OnSessionEnded
+  if (observers_.empty()) {
+    LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_)
+              << " has NO port state observer";
+    return;
+  }
+  for (auto& observer : observers_) {
+    uint16_t cookie = observer.first;
+    std::shared_ptr<PortStatusCallbacks> callback = observer.second;
+    LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_)
+              << " notify to bluetooth_audio=0x"
+              << ::android::base::StringPrintf("%04x", cookie);
+    callback->session_changed_cb_(cookie);
+  }
+}
+
+/***
+ *
+ * PCM methods
+ *
+ ***/
+
+size_t BluetoothAudioSession::OutWritePcmData(const void* buffer,
+                                              size_t bytes) {
+  if (buffer == nullptr || bytes <= 0) {
+    return 0;
+  }
+  size_t total_written = 0;
+  int timeout_ms = kFmqSendTimeoutMs;
+  do {
+    std::unique_lock<std::recursive_mutex> lock(mutex_);
+    if (!IsSessionReady()) {
+      break;
+    }
+    size_t num_bytes_to_write = data_mq_->availableToWrite();
+    if (num_bytes_to_write) {
+      if (num_bytes_to_write > (bytes - total_written)) {
+        num_bytes_to_write = bytes - total_written;
+      }
+
+      if (!data_mq_->write(
+              static_cast<const MQDataType*>(buffer) + total_written,
+              num_bytes_to_write)) {
+        LOG(ERROR) << "FMQ datapath writing " << total_written << "/" << bytes
+                   << " failed";
+        return total_written;
+      }
+      total_written += num_bytes_to_write;
+    } else if (timeout_ms >= kWritePollMs) {
+      lock.unlock();
+      usleep(kWritePollMs * 1000);
+      timeout_ms -= kWritePollMs;
+    } else {
+      LOG(DEBUG) << "Data " << total_written << "/" << bytes << " overflow "
+                 << (kFmqSendTimeoutMs - timeout_ms) << " ms";
+      return total_written;
+    }
+  } while (total_written < bytes);
+  return total_written;
+}
+
+size_t BluetoothAudioSession::InReadPcmData(void* buffer, size_t bytes) {
+  if (buffer == nullptr || bytes <= 0) {
+    return 0;
+  }
+  size_t total_read = 0;
+  int timeout_ms = kFmqReceiveTimeoutMs;
+  do {
+    std::unique_lock<std::recursive_mutex> lock(mutex_);
+    if (!IsSessionReady()) {
+      break;
+    }
+    size_t num_bytes_to_read = data_mq_->availableToRead();
+    if (num_bytes_to_read) {
+      if (num_bytes_to_read > (bytes - total_read)) {
+        num_bytes_to_read = bytes - total_read;
+      }
+      if (!data_mq_->read(static_cast<MQDataType*>(buffer) + total_read,
+                          num_bytes_to_read)) {
+        LOG(ERROR) << "FMQ datapath reading " << total_read << "/" << bytes
+                   << " failed";
+        return total_read;
+      }
+      total_read += num_bytes_to_read;
+    } else if (timeout_ms >= kReadPollMs) {
+      lock.unlock();
+      usleep(kReadPollMs * 1000);
+      timeout_ms -= kReadPollMs;
+      continue;
+    } else {
+      LOG(DEBUG) << "Data " << total_read << "/" << bytes << " overflow "
+                 << (kFmqReceiveTimeoutMs - timeout_ms) << " ms";
+      return total_read;
+    }
+  } while (total_read < bytes);
+  return total_read;
+}
+
+/***
+ *
+ * Other methods
+ *
+ ***/
+
+void BluetoothAudioSession::ReportControlStatus(bool start_resp,
+                                                BluetoothAudioStatus status) {
+  std::lock_guard<std::recursive_mutex> guard(mutex_);
+  if (observers_.empty()) {
+    LOG(WARNING) << __func__ << " - SessionType=" << toString(session_type_)
+                 << " has NO port state observer";
+    return;
+  }
+  for (auto& observer : observers_) {
+    uint16_t cookie = observer.first;
+    std::shared_ptr<PortStatusCallbacks> callback = observer.second;
+    LOG(INFO) << __func__ << " - status=" << toString(status)
+              << " for SessionType=" << toString(session_type_)
+              << ", bluetooth_audio=0x"
+              << ::android::base::StringPrintf("%04x", cookie)
+              << (start_resp ? " started" : " suspended");
+    callback->control_result_cb_(cookie, start_resp, status);
+  }
+}
+
+bool BluetoothAudioSession::GetPresentationPosition(
+    PresentationPosition& presentation_position) {
+  std::lock_guard<std::recursive_mutex> guard(mutex_);
+  if (!IsSessionReady()) {
+    LOG(DEBUG) << __func__ << " - SessionType=" << toString(session_type_)
+               << " has NO session";
+    return false;
+  }
+  bool retval = false;
+
+  if (!stack_iface_->getPresentationPosition(&presentation_position).isOk()) {
+    LOG(WARNING) << __func__ << " - IBluetoothAudioPort SessionType="
+                 << toString(session_type_) << " failed";
+    return false;
+  }
+  return retval;
+}
+
+void BluetoothAudioSession::UpdateSourceMetadata(
+    const struct source_metadata& source_metadata) {
+  std::lock_guard<std::recursive_mutex> guard(mutex_);
+  if (!IsSessionReady()) {
+    LOG(DEBUG) << __func__ << " - SessionType=" << toString(session_type_)
+               << " has NO session";
+    return;
+  }
+
+  ssize_t track_count = source_metadata.track_count;
+  LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_) << ","
+            << track_count << " track(s)";
+  if (session_type_ == SessionType::A2DP_SOFTWARE_ENCODING_DATAPATH ||
+      session_type_ == SessionType::A2DP_HARDWARE_OFFLOAD_ENCODING_DATAPATH) {
+    return;
+  }
+
+  SourceMetadata hal_source_metadata;
+  hal_source_metadata.tracks.resize(track_count);
+  for (int i = 0; i < track_count; i++) {
+    hal_source_metadata.tracks[i].usage =
+        static_cast<media::audio::common::AudioUsage>(
+            source_metadata.tracks[i].usage);
+    hal_source_metadata.tracks[i].contentType =
+        static_cast<media::audio::common::AudioContentType>(
+            source_metadata.tracks[i].content_type);
+    hal_source_metadata.tracks[i].gain = source_metadata.tracks[i].gain;
+    LOG(VERBOSE) << __func__ << " - SessionType=" << toString(session_type_)
+                 << ", usage=" << toString(hal_source_metadata.tracks[i].usage)
+                 << ", content="
+                 << toString(hal_source_metadata.tracks[i].contentType)
+                 << ", gain=" << hal_source_metadata.tracks[i].gain;
+  }
+
+  auto hal_retval = stack_iface_->updateSourceMetadata(hal_source_metadata);
+  if (!hal_retval.isOk()) {
+    LOG(WARNING) << __func__ << " - IBluetoothAudioPort SessionType="
+                 << toString(session_type_) << " failed";
+  }
+}
+
+void BluetoothAudioSession::UpdateSinkMetadata(
+    const struct sink_metadata& sink_metadata) {
+  std::lock_guard<std::recursive_mutex> guard(mutex_);
+  if (!IsSessionReady()) {
+    LOG(DEBUG) << __func__ << " - SessionType=" << toString(session_type_)
+               << " has NO session";
+    return;
+  }
+
+  ssize_t track_count = sink_metadata.track_count;
+  LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_) << ","
+            << track_count << " track(s)";
+  if (session_type_ == SessionType::A2DP_SOFTWARE_ENCODING_DATAPATH ||
+      session_type_ == SessionType::A2DP_HARDWARE_OFFLOAD_ENCODING_DATAPATH) {
+    return;
+  }
+
+  SinkMetadata hal_sink_metadata;
+  hal_sink_metadata.tracks.resize(track_count);
+  for (int i = 0; i < track_count; i++) {
+    hal_sink_metadata.tracks[i].source =
+        static_cast<media::audio::common::AudioSource>(
+            sink_metadata.tracks[i].source);
+    hal_sink_metadata.tracks[i].gain = sink_metadata.tracks[i].gain;
+    LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_)
+              << ", source=" << sink_metadata.tracks[i].source
+              << ", dest_device=" << sink_metadata.tracks[i].dest_device
+              << ", gain=" << sink_metadata.tracks[i].gain
+              << ", dest_device_address="
+              << sink_metadata.tracks[i].dest_device_address;
+  }
+
+  auto hal_retval = stack_iface_->updateSinkMetadata(hal_sink_metadata);
+  if (!hal_retval.isOk()) {
+    LOG(WARNING) << __func__ << " - IBluetoothAudioPort SessionType="
+                 << toString(session_type_) << " failed";
+  }
+}
+
+bool BluetoothAudioSession::IsAidlAvailable() {
+  if (is_aidl_checked) return is_aidl_available;
+  is_aidl_available =
+      (AServiceManager_checkService(
+           kDefaultAudioProviderFactoryInterface.c_str()) != nullptr);
+  is_aidl_checked = true;
+  return is_aidl_available;
+}
+
+/***
+ *
+ * BluetoothAudioSessionInstance
+ *
+ ***/
+std::mutex BluetoothAudioSessionInstance::mutex_;
+std::unordered_map<SessionType, std::shared_ptr<BluetoothAudioSession>>
+    BluetoothAudioSessionInstance::sessions_map_;
+
+std::shared_ptr<BluetoothAudioSession>
+BluetoothAudioSessionInstance::GetSessionInstance(
+    const SessionType& session_type) {
+  std::lock_guard<std::mutex> guard(mutex_);
+
+  if (!sessions_map_.empty()) {
+    auto entry = sessions_map_.find(session_type);
+    if (entry != sessions_map_.end()) {
+      return entry->second;
+    }
+  }
+  std::shared_ptr<BluetoothAudioSession> session_ptr =
+      std::make_shared<BluetoothAudioSession>(session_type);
+  sessions_map_[session_type] = session_ptr;
+  return session_ptr;
+}
+
+}  // namespace audio
+}  // namespace bluetooth
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
\ No newline at end of file
diff --git a/bluetooth/audio/utils/aidl_session/BluetoothAudioSession.h b/bluetooth/audio/utils/aidl_session/BluetoothAudioSession.h
new file mode 100644
index 0000000..85fd571
--- /dev/null
+++ b/bluetooth/audio/utils/aidl_session/BluetoothAudioSession.h
@@ -0,0 +1,227 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/audio/common/SinkMetadata.h>
+#include <aidl/android/hardware/audio/common/SourceMetadata.h>
+#include <aidl/android/hardware/bluetooth/audio/IBluetoothAudioProvider.h>
+#include <aidl/android/hardware/bluetooth/audio/IBluetoothAudioProviderFactory.h>
+#include <aidl/android/hardware/bluetooth/audio/SessionType.h>
+#include <fmq/AidlMessageQueue.h>
+#include <hardware/audio.h>
+
+#include <mutex>
+#include <unordered_map>
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace audio {
+
+using ::aidl::android::hardware::common::fmq::MQDescriptor;
+using ::aidl::android::hardware::common::fmq::SynchronizedReadWrite;
+using ::android::AidlMessageQueue;
+
+using ::aidl::android::hardware::audio::common::SinkMetadata;
+using ::aidl::android::hardware::audio::common::SourceMetadata;
+
+using MQDataType = int8_t;
+using MQDataMode = SynchronizedReadWrite;
+using DataMQ = AidlMessageQueue<MQDataType, MQDataMode>;
+using DataMQDesc =
+    ::aidl::android::hardware::common::fmq::MQDescriptor<MQDataType,
+                                                         MQDataMode>;
+
+static constexpr uint16_t kObserversCookieSize = 0x0010;  // 0x0000 ~ 0x000f
+static constexpr uint16_t kObserversCookieUndefined =
+    (static_cast<uint16_t>(SessionType::UNKNOWN) << 8 & 0xff00);
+inline SessionType ObserversCookieGetSessionType(uint16_t cookie) {
+  return static_cast<SessionType>(cookie >> 8 & 0x00ff);
+}
+inline uint16_t ObserversCookieGetInitValue(SessionType session_type) {
+  return (static_cast<uint16_t>(session_type) << 8 & 0xff00);
+}
+inline uint16_t ObserversCookieGetUpperBound(SessionType session_type) {
+  return (static_cast<uint16_t>(session_type) << 8 & 0xff00) +
+         kObserversCookieSize;
+}
+
+/***
+ * This presents the callbacks of started / suspended and session changed,
+ * and the bluetooth_audio module uses to receive the status notification
+ ***/
+struct PortStatusCallbacks {
+  /***
+   * control_result_cb_ - when the Bluetooth stack reports results of
+   * streamStarted or streamSuspended, the BluetoothAudioProvider will invoke
+   * this callback to report to the bluetooth_audio module.
+   * @param: cookie - indicates which bluetooth_audio output should handle
+   * @param: start_resp - this report is for startStream or not
+   * @param: status - the result of startStream
+   ***/
+  std::function<void(uint16_t cookie, bool start_resp,
+                     BluetoothAudioStatus status)>
+      control_result_cb_;
+  /***
+   * session_changed_cb_ - when the Bluetooth stack start / end session, the
+   * BluetoothAudioProvider will invoke this callback to notify to the
+   * bluetooth_audio module.
+   * @param: cookie - indicates which bluetooth_audio output should handle
+   ***/
+  std::function<void(uint16_t cookie)> session_changed_cb_;
+  /***
+   * audio_configuration_changed_cb_ - when the Bluetooth stack change the audio
+   * configuration, the BluetoothAudioProvider will invoke this callback to
+   * notify to the bluetooth_audio module.
+   * @param: cookie - indicates which bluetooth_audio output should handle
+   ***/
+  std::function<void(uint16_t cookie)> audio_configuration_changed_cb_;
+};
+
+class BluetoothAudioSession {
+ public:
+  BluetoothAudioSession(const SessionType& session_type);
+
+  /***
+   * The function helps to check if this session is ready or not
+   * @return: true if the Bluetooth stack has started the specified session
+   ***/
+  bool IsSessionReady();
+
+  /***
+   * The report function is used to report that the Bluetooth stack has started
+   * this session without any failure, and will invoke session_changed_cb_ to
+   * notify those registered bluetooth_audio outputs
+   ***/
+  void OnSessionStarted(const std::shared_ptr<IBluetoothAudioPort> stack_iface,
+                        const DataMQDesc* mq_desc,
+                        const AudioConfiguration& audio_config);
+
+  /***
+   * The report function is used to report that the Bluetooth stack has ended
+   * the session, and will invoke session_changed_cb_ to notify registered
+   * bluetooth_audio outputs
+   ***/
+  void OnSessionEnded();
+
+  /***
+   * The report function is used to report that the Bluetooth stack has notified
+   * the result of startStream or suspendStream, and will invoke
+   * control_result_cb_ to notify registered bluetooth_audio outputs
+   ***/
+  void ReportControlStatus(bool start_resp, BluetoothAudioStatus status);
+
+  /***
+   * The control function helps the bluetooth_audio module to register
+   * PortStatusCallbacks
+   * @return: cookie - the assigned number to this bluetooth_audio output
+   ***/
+  uint16_t RegisterStatusCback(const PortStatusCallbacks& cbacks);
+
+  /***
+   * The control function helps the bluetooth_audio module to unregister
+   * PortStatusCallbacks
+   * @param: cookie - indicates which bluetooth_audio output is
+   ***/
+  void UnregisterStatusCback(uint16_t cookie);
+
+  /***
+   * The control function is for the bluetooth_audio module to get the current
+   * AudioConfiguration
+   ***/
+  const AudioConfiguration& GetAudioConfig();
+
+  /***
+   * The report function is used to report that the Bluetooth stack has notified
+   * the audio configuration changed, and will invoke
+   * audio_configuration_changed_cb_ to notify registered bluetooth_audio
+   * outputs
+   ***/
+  void ReportAudioConfigChanged(const AudioConfiguration& audio_config);
+
+  /***
+   * Those control functions are for the bluetooth_audio module to start,
+   * suspend, stop stream, to check position, and to update metadata.
+   ***/
+  bool StartStream();
+  bool SuspendStream();
+  void StopStream();
+  bool GetPresentationPosition(PresentationPosition& presentation_position);
+  void UpdateSourceMetadata(const struct source_metadata& source_metadata);
+  void UpdateSinkMetadata(const struct sink_metadata& sink_metadata);
+
+  // The control function writes stream to FMQ
+  size_t OutWritePcmData(const void* buffer, size_t bytes);
+  // The control function read stream from FMQ
+  size_t InReadPcmData(void* buffer, size_t bytes);
+
+  // Return if IBluetoothAudioProviderFactory implementation existed
+  static bool IsAidlAvailable();
+
+  static constexpr PcmConfiguration kInvalidPcmConfiguration = {};
+  // can't be constexpr because of non-literal type
+  static const CodecConfiguration kInvalidCodecConfiguration;
+
+  static AudioConfiguration invalidSoftwareAudioConfiguration;
+  static AudioConfiguration invalidOffloadAudioConfiguration;
+  static AudioConfiguration invalidLeOffloadAudioConfig;
+
+ private:
+  // using recursive_mutex to allow hwbinder to re-enter again.
+  std::recursive_mutex mutex_;
+  SessionType session_type_;
+
+  // audio control path to use for both software and offloading
+  std::shared_ptr<IBluetoothAudioPort> stack_iface_;
+  // audio data path (FMQ) for software encoding
+  std::unique_ptr<DataMQ> data_mq_;
+  // audio data configuration for both software and offloading
+  std::unique_ptr<AudioConfiguration> audio_config_;
+
+  // saving those registered bluetooth_audio's callbacks
+  std::unordered_map<uint16_t, std::shared_ptr<struct PortStatusCallbacks>>
+      observers_;
+
+  bool UpdateDataPath(const DataMQDesc* mq_desc);
+  bool UpdateAudioConfig(const AudioConfiguration& audio_config);
+  // invoking the registered session_changed_cb_
+  void ReportSessionStatus();
+
+  static inline std::atomic<bool> is_aidl_checked = false;
+  static inline std::atomic<bool> is_aidl_available = false;
+  static inline const std::string kDefaultAudioProviderFactoryInterface =
+      std::string() + IBluetoothAudioProviderFactory::descriptor + "/default";
+};
+
+class BluetoothAudioSessionInstance {
+ public:
+  // The API is to fetch the specified session of A2DP / Hearing Aid
+  static std::shared_ptr<BluetoothAudioSession> GetSessionInstance(
+      const SessionType& session_type);
+
+ private:
+  static std::mutex mutex_;
+  static std::unordered_map<SessionType, std::shared_ptr<BluetoothAudioSession>>
+      sessions_map_;
+};
+
+}  // namespace audio
+}  // namespace bluetooth
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
\ No newline at end of file
diff --git a/bluetooth/audio/utils/aidl_session/BluetoothAudioSessionControl.h b/bluetooth/audio/utils/aidl_session/BluetoothAudioSessionControl.h
new file mode 100644
index 0000000..a3ed428
--- /dev/null
+++ b/bluetooth/audio/utils/aidl_session/BluetoothAudioSessionControl.h
@@ -0,0 +1,182 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "BluetoothAudioSession.h"
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace audio {
+
+class BluetoothAudioSessionControl {
+ public:
+  /***
+   * The control API helps to check if session is ready or not
+   * @return: true if the Bluetooth stack has started th specified session
+   ***/
+  static bool IsSessionReady(const SessionType& session_type) {
+    std::shared_ptr<BluetoothAudioSession> session_ptr =
+        BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+    if (session_ptr != nullptr) {
+      return session_ptr->IsSessionReady();
+    }
+
+    return false;
+  }
+
+  /***
+   * The control API helps the bluetooth_audio module to register
+   * PortStatusCallbacks
+   * @return: cookie - the assigned number to this bluetooth_audio output
+   ***/
+  static uint16_t RegisterControlResultCback(
+      const SessionType& session_type, const PortStatusCallbacks& cbacks) {
+    std::shared_ptr<BluetoothAudioSession> session_ptr =
+        BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+    if (session_ptr != nullptr) {
+      return session_ptr->RegisterStatusCback(cbacks);
+    }
+    return kObserversCookieUndefined;
+  }
+
+  /***
+   * The control API helps the bluetooth_audio module to unregister
+   * PortStatusCallbacks
+   * @param: cookie - indicates which bluetooth_audio output is
+   ***/
+  static void UnregisterControlResultCback(const SessionType& session_type,
+                                           uint16_t cookie) {
+    std::shared_ptr<BluetoothAudioSession> session_ptr =
+        BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+    if (session_ptr != nullptr) {
+      session_ptr->UnregisterStatusCback(cookie);
+    }
+  }
+
+  /***
+   * The control API for the bluetooth_audio module to get current
+   * AudioConfiguration
+   ***/
+  static const AudioConfiguration GetAudioConfig(
+      const SessionType& session_type) {
+    std::shared_ptr<BluetoothAudioSession> session_ptr =
+        BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+    if (session_ptr != nullptr) {
+      return session_ptr->GetAudioConfig();
+    } else if (session_type ==
+               SessionType::A2DP_HARDWARE_OFFLOAD_ENCODING_DATAPATH) {
+      return BluetoothAudioSession::invalidOffloadAudioConfiguration;
+    } else {
+      return BluetoothAudioSession::invalidSoftwareAudioConfiguration;
+    }
+  }
+
+  /***
+   * Those control APIs for the bluetooth_audio module to start / suspend /
+  stop
+   * stream, to check position, and to update metadata.
+  ***/
+  static bool StartStream(const SessionType& session_type) {
+    std::shared_ptr<BluetoothAudioSession> session_ptr =
+        BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+    if (session_ptr != nullptr) {
+      return session_ptr->StartStream();
+    }
+    return false;
+  }
+
+  static bool SuspendStream(const SessionType& session_type) {
+    std::shared_ptr<BluetoothAudioSession> session_ptr =
+        BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+    if (session_ptr != nullptr) {
+      return session_ptr->SuspendStream();
+    }
+    return false;
+  }
+
+  static void StopStream(const SessionType& session_type) {
+    std::shared_ptr<BluetoothAudioSession> session_ptr =
+        BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+    if (session_ptr != nullptr) {
+      session_ptr->StopStream();
+    }
+  }
+
+  static bool GetPresentationPosition(
+      const SessionType& session_type,
+      PresentationPosition& presentation_position) {
+    std::shared_ptr<BluetoothAudioSession> session_ptr =
+        BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+    if (session_ptr != nullptr) {
+      return session_ptr->GetPresentationPosition(presentation_position);
+    }
+    return false;
+  }
+
+  static void UpdateSourceMetadata(
+      const SessionType& session_type,
+      const struct source_metadata& source_metadata) {
+    std::shared_ptr<BluetoothAudioSession> session_ptr =
+        BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+    if (session_ptr != nullptr) {
+      session_ptr->UpdateSourceMetadata(source_metadata);
+    }
+  }
+
+  static void UpdateSinkMetadata(const SessionType& session_type,
+                                 const struct sink_metadata& sink_metadata) {
+    std::shared_ptr<BluetoothAudioSession> session_ptr =
+        BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+    if (session_ptr != nullptr) {
+      session_ptr->UpdateSinkMetadata(sink_metadata);
+    }
+  }
+
+  /***
+   * The control API writes stream to FMQ
+   ***/
+  static size_t OutWritePcmData(const SessionType& session_type,
+                                const void* buffer, size_t bytes) {
+    std::shared_ptr<BluetoothAudioSession> session_ptr =
+        BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+    if (session_ptr != nullptr) {
+      return session_ptr->OutWritePcmData(buffer, bytes);
+    }
+    return 0;
+  }
+
+  /***
+   * The control API reads stream from FMQ
+   ***/
+  static size_t InReadPcmData(const SessionType& session_type, void* buffer,
+                              size_t bytes) {
+    std::shared_ptr<BluetoothAudioSession> session_ptr =
+        BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+    if (session_ptr != nullptr) {
+      return session_ptr->InReadPcmData(buffer, bytes);
+    }
+    return 0;
+  }
+};
+
+}  // namespace audio
+}  // namespace bluetooth
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
\ No newline at end of file
diff --git a/bluetooth/audio/utils/aidl_session/BluetoothAudioSessionReport.h b/bluetooth/audio/utils/aidl_session/BluetoothAudioSessionReport.h
new file mode 100644
index 0000000..18569c3
--- /dev/null
+++ b/bluetooth/audio/utils/aidl_session/BluetoothAudioSessionReport.h
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "BluetoothAudioSession.h"
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace audio {
+
+class BluetoothAudioSessionReport {
+ public:
+  /***
+   * The API reports the Bluetooth stack has started the session, and will
+   * inform registered bluetooth_audio outputs
+   ***/
+  static void OnSessionStarted(
+      const SessionType& session_type,
+      const std::shared_ptr<IBluetoothAudioPort> host_iface,
+      const DataMQDesc* data_mq, const AudioConfiguration& audio_config) {
+    std::shared_ptr<BluetoothAudioSession> session_ptr =
+        BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+    if (session_ptr != nullptr) {
+      session_ptr->OnSessionStarted(host_iface, data_mq, audio_config);
+    }
+  }
+
+  /***
+   * The API reports the Bluetooth stack has ended the session, and will
+   * inform registered bluetooth_audio outputs
+   ***/
+  static void OnSessionEnded(const SessionType& session_type) {
+    std::shared_ptr<BluetoothAudioSession> session_ptr =
+        BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+    if (session_ptr != nullptr) {
+      session_ptr->OnSessionEnded();
+    }
+  }
+
+  /***
+   * The API reports the Bluetooth stack has replied the result of startStream
+   * or suspendStream, and will inform registered bluetooth_audio outputs
+   ***/
+  static void ReportControlStatus(const SessionType& session_type,
+                                  const bool& start_resp,
+                                  BluetoothAudioStatus status) {
+    std::shared_ptr<BluetoothAudioSession> session_ptr =
+        BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+    if (session_ptr != nullptr) {
+      session_ptr->ReportControlStatus(start_resp, status);
+    }
+  }
+  /***
+   * The API reports the Bluetooth stack has replied the changed of the audio
+   * configuration, and will inform registered bluetooth_audio outputs
+   ***/
+  static void ReportAudioConfigChanged(const SessionType& session_type,
+                                       const AudioConfiguration& audio_config) {
+    std::shared_ptr<BluetoothAudioSession> session_ptr =
+        BluetoothAudioSessionInstance::GetSessionInstance(session_type);
+    if (session_ptr != nullptr) {
+      session_ptr->ReportAudioConfigChanged(audio_config);
+    }
+  }
+};
+
+}  // namespace audio
+}  // namespace bluetooth
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
\ No newline at end of file
diff --git a/bluetooth/audio/utils/aidl_session/HidlToAidlMiddleware.cpp b/bluetooth/audio/utils/aidl_session/HidlToAidlMiddleware.cpp
new file mode 100644
index 0000000..91e0238
--- /dev/null
+++ b/bluetooth/audio/utils/aidl_session/HidlToAidlMiddleware.cpp
@@ -0,0 +1,775 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "BtAudioNakahara"
+
+#include <aidl/android/hardware/bluetooth/audio/AudioConfiguration.h>
+#include <aidl/android/hardware/bluetooth/audio/BluetoothAudioStatus.h>
+#include <aidl/android/hardware/bluetooth/audio/SessionType.h>
+#include <android-base/logging.h>
+
+#include <functional>
+#include <unordered_map>
+
+#include "../aidl_session/BluetoothAudioSession.h"
+#include "../aidl_session/BluetoothAudioSessionControl.h"
+#include "HidlToAidlMiddleware_2_0.h"
+#include "HidlToAidlMiddleware_2_1.h"
+#include "HidlToAidlMiddleware_2_2.h"
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace audio {
+
+using HidlStatus = ::android::hardware::bluetooth::audio::V2_0::Status;
+using PcmConfig_2_0 =
+    ::android::hardware::bluetooth::audio::V2_0::PcmParameters;
+using SampleRate_2_0 = ::android::hardware::bluetooth::audio::V2_0::SampleRate;
+using ChannelMode_2_0 =
+    ::android::hardware::bluetooth::audio::V2_0::ChannelMode;
+using BitsPerSample_2_0 =
+    ::android::hardware::bluetooth::audio::V2_0::BitsPerSample;
+using CodecConfig_2_0 =
+    ::android::hardware::bluetooth::audio::V2_0::CodecConfiguration;
+using CodecType_2_0 = ::android::hardware::bluetooth::audio::V2_0::CodecType;
+using SbcConfig_2_0 =
+    ::android::hardware::bluetooth::audio::V2_0::SbcParameters;
+using AacConfig_2_0 =
+    ::android::hardware::bluetooth::audio::V2_0::AacParameters;
+using LdacConfig_2_0 =
+    ::android::hardware::bluetooth::audio::V2_0::LdacParameters;
+using AptxConfig_2_0 =
+    ::android::hardware::bluetooth::audio::V2_0::AptxParameters;
+using SbcAllocMethod_2_0 =
+    ::android::hardware::bluetooth::audio::V2_0::SbcAllocMethod;
+using SbcBlockLength_2_0 =
+    ::android::hardware::bluetooth::audio::V2_0::SbcBlockLength;
+using SbcChannelMode_2_0 =
+    ::android::hardware::bluetooth::audio::V2_0::SbcChannelMode;
+using SbcNumSubbands_2_0 =
+    ::android::hardware::bluetooth::audio::V2_0::SbcNumSubbands;
+using AacObjectType_2_0 =
+    ::android::hardware::bluetooth::audio::V2_0::AacObjectType;
+using AacVarBitRate_2_0 =
+    ::android::hardware::bluetooth::audio::V2_0::AacVariableBitRate;
+using LdacChannelMode_2_0 =
+    ::android::hardware::bluetooth::audio::V2_0::LdacChannelMode;
+using LdacQualityIndex_2_0 =
+    ::android::hardware::bluetooth::audio::V2_0::LdacQualityIndex;
+
+using PcmConfig_2_1 =
+    ::android::hardware::bluetooth::audio::V2_1::PcmParameters;
+using SampleRate_2_1 = ::android::hardware::bluetooth::audio::V2_1::SampleRate;
+using Lc3CodecConfig_2_1 =
+    ::android::hardware::bluetooth::audio::V2_1::Lc3CodecConfiguration;
+using Lc3Config_2_1 =
+    ::android::hardware::bluetooth::audio::V2_1::Lc3Parameters;
+using Lc3FrameDuration_2_1 =
+    ::android::hardware::bluetooth::audio::V2_1::Lc3FrameDuration;
+
+using LeAudioConfig_2_2 =
+    ::android::hardware::bluetooth::audio::V2_2::LeAudioConfiguration;
+using LeAudioMode_2_2 =
+    ::android::hardware::bluetooth::audio::V2_2::LeAudioMode;
+
+std::mutex legacy_callback_lock;
+std::unordered_map<
+    SessionType,
+    std::unordered_map<uint16_t, std::shared_ptr<PortStatusCallbacks_2_2>>>
+    legacy_callback_table;
+
+const static std::unordered_map<SessionType_2_0, SessionType>
+    session_type_2_0_to_aidl_map{
+        {SessionType_2_0::A2DP_SOFTWARE_ENCODING_DATAPATH,
+         SessionType::A2DP_SOFTWARE_ENCODING_DATAPATH},
+        {SessionType_2_0::A2DP_HARDWARE_OFFLOAD_DATAPATH,
+         SessionType::A2DP_HARDWARE_OFFLOAD_ENCODING_DATAPATH},
+        {SessionType_2_0::HEARING_AID_SOFTWARE_ENCODING_DATAPATH,
+         SessionType::HEARING_AID_SOFTWARE_ENCODING_DATAPATH},
+    };
+
+const static std::unordered_map<SessionType_2_1, SessionType>
+    session_type_2_1_to_aidl_map{
+        {SessionType_2_1::A2DP_SOFTWARE_ENCODING_DATAPATH,
+         SessionType::A2DP_SOFTWARE_ENCODING_DATAPATH},
+        {SessionType_2_1::A2DP_HARDWARE_OFFLOAD_DATAPATH,
+         SessionType::A2DP_HARDWARE_OFFLOAD_ENCODING_DATAPATH},
+        {SessionType_2_1::HEARING_AID_SOFTWARE_ENCODING_DATAPATH,
+         SessionType::HEARING_AID_SOFTWARE_ENCODING_DATAPATH},
+        {SessionType_2_1::LE_AUDIO_SOFTWARE_ENCODING_DATAPATH,
+         SessionType::LE_AUDIO_SOFTWARE_ENCODING_DATAPATH},
+        {SessionType_2_1::LE_AUDIO_SOFTWARE_DECODED_DATAPATH,
+         SessionType::LE_AUDIO_SOFTWARE_DECODING_DATAPATH},
+        {SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH,
+         SessionType::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH},
+        {SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH,
+         SessionType::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH},
+    };
+
+const static std::unordered_map<int32_t, SampleRate_2_0>
+    sample_rate_to_hidl_2_0_map{
+        {44100, SampleRate_2_0::RATE_44100},
+        {48000, SampleRate_2_0::RATE_48000},
+        {88200, SampleRate_2_0::RATE_88200},
+        {96000, SampleRate_2_0::RATE_96000},
+        {176400, SampleRate_2_0::RATE_176400},
+        {192000, SampleRate_2_0::RATE_192000},
+        {16000, SampleRate_2_0::RATE_16000},
+        {24000, SampleRate_2_0::RATE_24000},
+    };
+
+const static std::unordered_map<int32_t, SampleRate_2_1>
+    sample_rate_to_hidl_2_1_map{
+        {44100, SampleRate_2_1::RATE_44100},
+        {48000, SampleRate_2_1::RATE_48000},
+        {88200, SampleRate_2_1::RATE_88200},
+        {96000, SampleRate_2_1::RATE_96000},
+        {176400, SampleRate_2_1::RATE_176400},
+        {192000, SampleRate_2_1::RATE_192000},
+        {16000, SampleRate_2_1::RATE_16000},
+        {24000, SampleRate_2_1::RATE_24000},
+        {8000, SampleRate_2_1::RATE_8000},
+        {32000, SampleRate_2_1::RATE_32000},
+    };
+
+const static std::unordered_map<CodecType, CodecType_2_0>
+    codec_type_to_hidl_2_0_map{
+        {CodecType::UNKNOWN, CodecType_2_0::UNKNOWN},
+        {CodecType::SBC, CodecType_2_0::SBC},
+        {CodecType::AAC, CodecType_2_0::AAC},
+        {CodecType::APTX, CodecType_2_0::APTX},
+        {CodecType::APTX_HD, CodecType_2_0::APTX_HD},
+        {CodecType::LDAC, CodecType_2_0::LDAC},
+        {CodecType::LC3, CodecType_2_0::UNKNOWN},
+    };
+
+const static std::unordered_map<SbcChannelMode, SbcChannelMode_2_0>
+    sbc_channel_mode_to_hidl_2_0_map{
+        {SbcChannelMode::UNKNOWN, SbcChannelMode_2_0::UNKNOWN},
+        {SbcChannelMode::JOINT_STEREO, SbcChannelMode_2_0::JOINT_STEREO},
+        {SbcChannelMode::STEREO, SbcChannelMode_2_0::STEREO},
+        {SbcChannelMode::DUAL, SbcChannelMode_2_0::DUAL},
+        {SbcChannelMode::MONO, SbcChannelMode_2_0::MONO},
+    };
+
+const static std::unordered_map<int8_t, SbcBlockLength_2_0>
+    sbc_block_length_to_hidl_map{
+        {4, SbcBlockLength_2_0::BLOCKS_4},
+        {8, SbcBlockLength_2_0::BLOCKS_8},
+        {12, SbcBlockLength_2_0::BLOCKS_12},
+        {16, SbcBlockLength_2_0::BLOCKS_16},
+    };
+
+const static std::unordered_map<int8_t, SbcNumSubbands_2_0>
+    sbc_subbands_to_hidl_map{
+        {4, SbcNumSubbands_2_0::SUBBAND_4},
+        {8, SbcNumSubbands_2_0::SUBBAND_8},
+    };
+
+const static std::unordered_map<SbcAllocMethod, SbcAllocMethod_2_0>
+    sbc_alloc_method_to_hidl_map{
+        {SbcAllocMethod::ALLOC_MD_S, SbcAllocMethod_2_0::ALLOC_MD_S},
+        {SbcAllocMethod::ALLOC_MD_L, SbcAllocMethod_2_0::ALLOC_MD_L},
+    };
+
+const static std::unordered_map<AacObjectType, AacObjectType_2_0>
+    aac_object_type_to_hidl_map{
+        {AacObjectType::MPEG2_LC, AacObjectType_2_0::MPEG2_LC},
+        {AacObjectType::MPEG4_LC, AacObjectType_2_0::MPEG4_LC},
+        {AacObjectType::MPEG4_LTP, AacObjectType_2_0::MPEG4_LTP},
+        {AacObjectType::MPEG4_SCALABLE, AacObjectType_2_0::MPEG4_SCALABLE},
+    };
+
+const static std::unordered_map<LdacChannelMode, LdacChannelMode_2_0>
+    ldac_channel_mode_to_hidl_map{
+        {LdacChannelMode::UNKNOWN, LdacChannelMode_2_0::UNKNOWN},
+        {LdacChannelMode::STEREO, LdacChannelMode_2_0::STEREO},
+        {LdacChannelMode::DUAL, LdacChannelMode_2_0::DUAL},
+        {LdacChannelMode::MONO, LdacChannelMode_2_0::MONO},
+    };
+
+const static std::unordered_map<LdacQualityIndex, LdacQualityIndex_2_0>
+    ldac_qindex_to_hidl_map{
+        {LdacQualityIndex::HIGH, LdacQualityIndex_2_0::QUALITY_HIGH},
+        {LdacQualityIndex::MID, LdacQualityIndex_2_0::QUALITY_MID},
+        {LdacQualityIndex::LOW, LdacQualityIndex_2_0::QUALITY_LOW},
+        {LdacQualityIndex::ABR, LdacQualityIndex_2_0::QUALITY_ABR},
+    };
+
+const static std::unordered_map<LeAudioMode, LeAudioMode_2_2>
+    leaudio_mode_to_hidl_map{
+        {LeAudioMode::UNKNOWN, LeAudioMode_2_2::UNKNOWN},
+        {LeAudioMode::UNICAST, LeAudioMode_2_2::UNICAST},
+        {LeAudioMode::BROADCAST, LeAudioMode_2_2::BROADCAST},
+    };
+
+inline SessionType from_session_type_2_0(
+    const SessionType_2_0& session_type_hidl) {
+  auto it = session_type_2_0_to_aidl_map.find(session_type_hidl);
+  if (it != session_type_2_0_to_aidl_map.end()) return it->second;
+  return SessionType::UNKNOWN;
+}
+
+inline SessionType from_session_type_2_1(
+    const SessionType_2_1& session_type_hidl) {
+  auto it = session_type_2_1_to_aidl_map.find(session_type_hidl);
+  if (it != session_type_2_1_to_aidl_map.end()) return it->second;
+  return SessionType::UNKNOWN;
+}
+
+inline HidlStatus to_hidl_status(const BluetoothAudioStatus& status) {
+  switch (status) {
+    case BluetoothAudioStatus::SUCCESS:
+      return HidlStatus::SUCCESS;
+    case BluetoothAudioStatus::UNSUPPORTED_CODEC_CONFIGURATION:
+      return HidlStatus::UNSUPPORTED_CODEC_CONFIGURATION;
+    default:
+      return HidlStatus::FAILURE;
+  }
+}
+
+inline SampleRate_2_0 to_hidl_sample_rate_2_0(const int32_t sample_rate_hz) {
+  auto it = sample_rate_to_hidl_2_0_map.find(sample_rate_hz);
+  if (it != sample_rate_to_hidl_2_0_map.end()) return it->second;
+  return SampleRate_2_0::RATE_UNKNOWN;
+}
+
+inline SampleRate_2_1 to_hidl_sample_rate_2_1(const int32_t sample_rate_hz) {
+  auto it = sample_rate_to_hidl_2_1_map.find(sample_rate_hz);
+  if (it != sample_rate_to_hidl_2_1_map.end()) return it->second;
+  return SampleRate_2_1::RATE_UNKNOWN;
+}
+
+inline BitsPerSample_2_0 to_hidl_bits_per_sample(const int8_t bit_per_sample) {
+  switch (bit_per_sample) {
+    case 16:
+      return BitsPerSample_2_0::BITS_16;
+    case 24:
+      return BitsPerSample_2_0::BITS_24;
+    case 32:
+      return BitsPerSample_2_0::BITS_32;
+    default:
+      return BitsPerSample_2_0::BITS_UNKNOWN;
+  }
+}
+
+inline ChannelMode_2_0 to_hidl_channel_mode(const ChannelMode channel_mode) {
+  switch (channel_mode) {
+    case ChannelMode::MONO:
+      return ChannelMode_2_0::MONO;
+    case ChannelMode::STEREO:
+      return ChannelMode_2_0::STEREO;
+    default:
+      return ChannelMode_2_0::UNKNOWN;
+  }
+}
+
+inline PcmConfig_2_0 to_hidl_pcm_config_2_0(
+    const PcmConfiguration& pcm_config) {
+  PcmConfig_2_0 hidl_pcm_config;
+  hidl_pcm_config.sampleRate = to_hidl_sample_rate_2_0(pcm_config.sampleRateHz);
+  hidl_pcm_config.channelMode = to_hidl_channel_mode(pcm_config.channelMode);
+  hidl_pcm_config.bitsPerSample =
+      to_hidl_bits_per_sample(pcm_config.bitsPerSample);
+  return hidl_pcm_config;
+}
+
+inline CodecType_2_0 to_hidl_codec_type_2_0(const CodecType codec_type) {
+  auto it = codec_type_to_hidl_2_0_map.find(codec_type);
+  if (it != codec_type_to_hidl_2_0_map.end()) return it->second;
+  return CodecType_2_0::UNKNOWN;
+}
+
+inline SbcConfig_2_0 to_hidl_sbc_config(const SbcConfiguration sbc_config) {
+  SbcConfig_2_0 hidl_sbc_config;
+  hidl_sbc_config.minBitpool = sbc_config.minBitpool;
+  hidl_sbc_config.maxBitpool = sbc_config.maxBitpool;
+  hidl_sbc_config.sampleRate = to_hidl_sample_rate_2_0(sbc_config.sampleRateHz);
+  hidl_sbc_config.bitsPerSample =
+      to_hidl_bits_per_sample(sbc_config.bitsPerSample);
+  if (sbc_channel_mode_to_hidl_2_0_map.find(sbc_config.channelMode) !=
+      sbc_channel_mode_to_hidl_2_0_map.end()) {
+    hidl_sbc_config.channelMode =
+        sbc_channel_mode_to_hidl_2_0_map.at(sbc_config.channelMode);
+  }
+  if (sbc_block_length_to_hidl_map.find(sbc_config.blockLength) !=
+      sbc_block_length_to_hidl_map.end()) {
+    hidl_sbc_config.blockLength =
+        sbc_block_length_to_hidl_map.at(sbc_config.blockLength);
+  }
+  if (sbc_subbands_to_hidl_map.find(sbc_config.numSubbands) !=
+      sbc_subbands_to_hidl_map.end()) {
+    hidl_sbc_config.numSubbands =
+        sbc_subbands_to_hidl_map.at(sbc_config.numSubbands);
+  }
+  if (sbc_alloc_method_to_hidl_map.find(sbc_config.allocMethod) !=
+      sbc_alloc_method_to_hidl_map.end()) {
+    hidl_sbc_config.allocMethod =
+        sbc_alloc_method_to_hidl_map.at(sbc_config.allocMethod);
+  }
+  return hidl_sbc_config;
+}
+
+inline AacConfig_2_0 to_hidl_aac_config(const AacConfiguration aac_config) {
+  AacConfig_2_0 hidl_aac_config;
+  hidl_aac_config.sampleRate = to_hidl_sample_rate_2_0(aac_config.sampleRateHz);
+  hidl_aac_config.bitsPerSample =
+      to_hidl_bits_per_sample(aac_config.bitsPerSample);
+  hidl_aac_config.channelMode = to_hidl_channel_mode(aac_config.channelMode);
+  if (aac_object_type_to_hidl_map.find(aac_config.objectType) !=
+      aac_object_type_to_hidl_map.end()) {
+    hidl_aac_config.objectType =
+        aac_object_type_to_hidl_map.at(aac_config.objectType);
+  }
+  hidl_aac_config.variableBitRateEnabled = aac_config.variableBitRateEnabled
+                                               ? AacVarBitRate_2_0::ENABLED
+                                               : AacVarBitRate_2_0::DISABLED;
+  return hidl_aac_config;
+}
+
+inline LdacConfig_2_0 to_hidl_ldac_config(const LdacConfiguration ldac_config) {
+  LdacConfig_2_0 hidl_ldac_config;
+  hidl_ldac_config.sampleRate =
+      to_hidl_sample_rate_2_0(ldac_config.sampleRateHz);
+  hidl_ldac_config.bitsPerSample =
+      to_hidl_bits_per_sample(ldac_config.bitsPerSample);
+  if (ldac_channel_mode_to_hidl_map.find(ldac_config.channelMode) !=
+      ldac_channel_mode_to_hidl_map.end()) {
+    hidl_ldac_config.channelMode =
+        ldac_channel_mode_to_hidl_map.at(ldac_config.channelMode);
+  }
+  if (ldac_qindex_to_hidl_map.find(ldac_config.qualityIndex) !=
+      ldac_qindex_to_hidl_map.end()) {
+    hidl_ldac_config.qualityIndex =
+        ldac_qindex_to_hidl_map.at(ldac_config.qualityIndex);
+  }
+  return hidl_ldac_config;
+}
+
+inline AptxConfig_2_0 to_hidl_aptx_config(const AptxConfiguration aptx_config) {
+  AptxConfig_2_0 hidl_aptx_config;
+  hidl_aptx_config.sampleRate =
+      to_hidl_sample_rate_2_0(aptx_config.sampleRateHz);
+  hidl_aptx_config.bitsPerSample =
+      to_hidl_bits_per_sample(aptx_config.bitsPerSample);
+  hidl_aptx_config.channelMode = to_hidl_channel_mode(aptx_config.channelMode);
+  return hidl_aptx_config;
+}
+
+inline CodecConfig_2_0 to_hidl_codec_config_2_0(
+    const CodecConfiguration& codec_config) {
+  CodecConfig_2_0 hidl_codec_config;
+  hidl_codec_config.codecType = to_hidl_codec_type_2_0(codec_config.codecType);
+  hidl_codec_config.encodedAudioBitrate =
+      static_cast<uint32_t>(codec_config.encodedAudioBitrate);
+  hidl_codec_config.peerMtu = static_cast<uint32_t>(codec_config.peerMtu);
+  hidl_codec_config.isScmstEnabled = codec_config.isScmstEnabled;
+  switch (codec_config.config.getTag()) {
+    case CodecConfiguration::CodecSpecific::sbcConfig:
+      hidl_codec_config.config.sbcConfig(to_hidl_sbc_config(
+          codec_config.config
+              .get<CodecConfiguration::CodecSpecific::sbcConfig>()));
+      break;
+    case CodecConfiguration::CodecSpecific::aacConfig:
+      hidl_codec_config.config.aacConfig(to_hidl_aac_config(
+          codec_config.config
+              .get<CodecConfiguration::CodecSpecific::aacConfig>()));
+      break;
+    case CodecConfiguration::CodecSpecific::ldacConfig:
+      hidl_codec_config.config.ldacConfig(to_hidl_ldac_config(
+          codec_config.config
+              .get<CodecConfiguration::CodecSpecific::ldacConfig>()));
+      break;
+    case CodecConfiguration::CodecSpecific::aptxConfig:
+      hidl_codec_config.config.aptxConfig(to_hidl_aptx_config(
+          codec_config.config
+              .get<CodecConfiguration::CodecSpecific::aptxConfig>()));
+      break;
+    default:
+      break;
+  }
+  return hidl_codec_config;
+}
+
+inline AudioConfig_2_0 to_hidl_audio_config_2_0(
+    const AudioConfiguration& audio_config) {
+  AudioConfig_2_0 hidl_audio_config;
+  if (audio_config.getTag() == AudioConfiguration::pcmConfig) {
+    hidl_audio_config.pcmConfig(to_hidl_pcm_config_2_0(
+        audio_config.get<AudioConfiguration::pcmConfig>()));
+  } else if (audio_config.getTag() == AudioConfiguration::a2dpConfig) {
+    hidl_audio_config.codecConfig(to_hidl_codec_config_2_0(
+        audio_config.get<AudioConfiguration::a2dpConfig>()));
+  }
+  return hidl_audio_config;
+}
+
+inline PcmConfig_2_1 to_hidl_pcm_config_2_1(
+    const PcmConfiguration& pcm_config) {
+  PcmConfig_2_1 hidl_pcm_config;
+  hidl_pcm_config.sampleRate = to_hidl_sample_rate_2_1(pcm_config.sampleRateHz);
+  hidl_pcm_config.channelMode = to_hidl_channel_mode(pcm_config.channelMode);
+  hidl_pcm_config.bitsPerSample =
+      to_hidl_bits_per_sample(pcm_config.bitsPerSample);
+  hidl_pcm_config.dataIntervalUs =
+      static_cast<uint32_t>(pcm_config.dataIntervalUs);
+  return hidl_pcm_config;
+}
+
+inline Lc3Config_2_1 to_hidl_lc3_config_2_1(
+    const Lc3Configuration& lc3_config) {
+  Lc3Config_2_1 hidl_lc3_config;
+  hidl_lc3_config.pcmBitDepth = to_hidl_bits_per_sample(lc3_config.pcmBitDepth);
+  hidl_lc3_config.samplingFrequency =
+      to_hidl_sample_rate_2_1(lc3_config.samplingFrequencyHz);
+  if (lc3_config.samplingFrequencyHz == 10000)
+    hidl_lc3_config.frameDuration = Lc3FrameDuration_2_1::DURATION_10000US;
+  else if (lc3_config.samplingFrequencyHz == 7500)
+    hidl_lc3_config.frameDuration = Lc3FrameDuration_2_1::DURATION_7500US;
+  hidl_lc3_config.octetsPerFrame =
+      static_cast<uint32_t>(lc3_config.octetsPerFrame);
+  hidl_lc3_config.blocksPerSdu = static_cast<uint32_t>(lc3_config.blocksPerSdu);
+  return hidl_lc3_config;
+}
+
+inline Lc3CodecConfig_2_1 to_hidl_leaudio_config_2_1(
+    const LeAudioConfiguration& leaudio_config) {
+  auto& unicast_config =
+      leaudio_config.modeConfig
+          .get<LeAudioConfiguration::LeAudioModeConfig::unicastConfig>();
+
+  auto& le_codec_config = unicast_config.leAudioCodecConfig
+                              .get<LeAudioCodecConfiguration::lc3Config>();
+
+  Lc3CodecConfig_2_1 hidl_lc3_codec_config;
+  hidl_lc3_codec_config.lc3Config = to_hidl_lc3_config_2_1(le_codec_config);
+
+  hidl_lc3_codec_config.audioChannelAllocation =
+      unicast_config.streamMap.size();
+
+  return hidl_lc3_codec_config;
+}
+
+inline LeAudioConfig_2_2 to_hidl_leaudio_config_2_2(
+    const LeAudioConfiguration& leaudio_config) {
+  LeAudioConfig_2_2 hidl_leaudio_config;
+  if (leaudio_mode_to_hidl_map.find(leaudio_config.mode) !=
+      leaudio_mode_to_hidl_map.end()) {
+    hidl_leaudio_config.mode = leaudio_mode_to_hidl_map.at(leaudio_config.mode);
+  }
+
+  if (leaudio_config.modeConfig.getTag() ==
+      LeAudioConfiguration::LeAudioModeConfig::unicastConfig) {
+    auto& unicast_config =
+        leaudio_config.modeConfig
+            .get<LeAudioConfiguration::LeAudioModeConfig::unicastConfig>();
+    ::android::hardware::bluetooth::audio::V2_2::UnicastConfig
+        hidl_unicast_config;
+    hidl_unicast_config.peerDelay =
+        static_cast<uint32_t>(unicast_config.peerDelay);
+
+    auto& lc3_config = unicast_config.leAudioCodecConfig
+                           .get<LeAudioCodecConfiguration::lc3Config>();
+    hidl_unicast_config.lc3Config = to_hidl_lc3_config_2_1(lc3_config);
+
+    hidl_unicast_config.streamMap.resize(unicast_config.streamMap.size());
+    for (int i = 0; i < unicast_config.streamMap.size(); i++) {
+      hidl_unicast_config.streamMap[i].audioChannelAllocation =
+          static_cast<uint32_t>(
+              unicast_config.streamMap[i].audioChannelAllocation);
+      hidl_unicast_config.streamMap[i].streamHandle =
+          static_cast<uint16_t>(unicast_config.streamMap[i].streamHandle);
+    }
+  } else if (leaudio_config.modeConfig.getTag() ==
+             LeAudioConfiguration::LeAudioModeConfig::broadcastConfig) {
+    auto bcast_config =
+        leaudio_config.modeConfig
+            .get<LeAudioConfiguration::LeAudioModeConfig::broadcastConfig>();
+    ::android::hardware::bluetooth::audio::V2_2::BroadcastConfig
+        hidl_bcast_config;
+    hidl_bcast_config.streamMap.resize(bcast_config.streamMap.size());
+    for (int i = 0; i < bcast_config.streamMap.size(); i++) {
+      hidl_bcast_config.streamMap[i].audioChannelAllocation =
+          static_cast<uint32_t>(
+              bcast_config.streamMap[i].audioChannelAllocation);
+      hidl_bcast_config.streamMap[i].streamHandle =
+          static_cast<uint16_t>(bcast_config.streamMap[i].streamHandle);
+      hidl_bcast_config.streamMap[i].lc3Config = to_hidl_lc3_config_2_1(
+          bcast_config.streamMap[i]
+              .leAudioCodecConfig.get<LeAudioCodecConfiguration::lc3Config>());
+    }
+  }
+  return hidl_leaudio_config;
+}
+
+inline AudioConfig_2_1 to_hidl_audio_config_2_1(
+    const AudioConfiguration& audio_config) {
+  AudioConfig_2_1 hidl_audio_config;
+  switch (audio_config.getTag()) {
+    case AudioConfiguration::pcmConfig:
+      hidl_audio_config.pcmConfig(to_hidl_pcm_config_2_1(
+          audio_config.get<AudioConfiguration::pcmConfig>()));
+      break;
+    case AudioConfiguration::a2dpConfig:
+      hidl_audio_config.codecConfig(to_hidl_codec_config_2_0(
+          audio_config.get<AudioConfiguration::a2dpConfig>()));
+      break;
+    case AudioConfiguration::leAudioConfig:
+      hidl_audio_config.leAudioCodecConfig(to_hidl_leaudio_config_2_1(
+          audio_config.get<AudioConfiguration::leAudioConfig>()));
+      break;
+  }
+  return hidl_audio_config;
+}
+
+inline AudioConfig_2_2 to_hidl_audio_config_2_2(
+    const AudioConfiguration& audio_config) {
+  AudioConfig_2_2 hidl_audio_config;
+  switch (audio_config.getTag()) {
+    case AudioConfiguration::pcmConfig:
+      hidl_audio_config.pcmConfig(to_hidl_pcm_config_2_1(
+          audio_config.get<AudioConfiguration::pcmConfig>()));
+      break;
+    case AudioConfiguration::a2dpConfig:
+      hidl_audio_config.codecConfig(to_hidl_codec_config_2_0(
+          audio_config.get<AudioConfiguration::a2dpConfig>()));
+      break;
+    case AudioConfiguration::leAudioConfig:
+      hidl_audio_config.leAudioConfig(to_hidl_leaudio_config_2_2(
+          audio_config.get<AudioConfiguration::leAudioConfig>()));
+      break;
+  }
+  return hidl_audio_config;
+}
+
+/***
+ *
+ * 2.0
+ *
+ ***/
+
+bool HidlToAidlMiddleware_2_0::IsSessionReady(
+    const SessionType_2_0& session_type) {
+  return BluetoothAudioSessionControl::IsSessionReady(
+      from_session_type_2_0(session_type));
+}
+
+uint16_t HidlToAidlMiddleware_2_0::RegisterControlResultCback(
+    const SessionType_2_0& session_type,
+    const PortStatusCallbacks_2_0& cbacks) {
+  PortStatusCallbacks_2_2 callback_2_2{
+      .control_result_cb_ = cbacks.control_result_cb_,
+      .session_changed_cb_ = cbacks.session_changed_cb_,
+  };
+  return HidlToAidlMiddleware_2_2::RegisterControlResultCback(
+      static_cast<SessionType_2_1>(session_type), callback_2_2);
+}
+
+void HidlToAidlMiddleware_2_0::UnregisterControlResultCback(
+    const SessionType_2_0& session_type, uint16_t cookie) {
+  HidlToAidlMiddleware_2_2::UnregisterControlResultCback(
+      static_cast<SessionType_2_1>(session_type), cookie);
+}
+
+const AudioConfig_2_0 HidlToAidlMiddleware_2_0::GetAudioConfig(
+    const SessionType_2_0& session_type) {
+  return to_hidl_audio_config_2_0(BluetoothAudioSessionControl::GetAudioConfig(
+      from_session_type_2_0(session_type)));
+}
+
+bool HidlToAidlMiddleware_2_0::StartStream(
+    const SessionType_2_0& session_type) {
+  return BluetoothAudioSessionControl::StartStream(
+      from_session_type_2_0(session_type));
+}
+
+void HidlToAidlMiddleware_2_0::StopStream(const SessionType_2_0& session_type) {
+  return BluetoothAudioSessionControl::StopStream(
+      from_session_type_2_0(session_type));
+}
+
+bool HidlToAidlMiddleware_2_0::SuspendStream(
+    const SessionType_2_0& session_type) {
+  return BluetoothAudioSessionControl::SuspendStream(
+      from_session_type_2_0(session_type));
+}
+
+bool HidlToAidlMiddleware_2_0::GetPresentationPosition(
+    const SessionType_2_0& session_type, uint64_t* remote_delay_report_ns,
+    uint64_t* total_bytes_readed, timespec* data_position) {
+  PresentationPosition presentation_position;
+  auto ret_val = BluetoothAudioSessionControl::GetPresentationPosition(
+      from_session_type_2_0(session_type), presentation_position);
+  if (remote_delay_report_ns)
+    *remote_delay_report_ns = presentation_position.remoteDeviceAudioDelayNanos;
+  if (total_bytes_readed)
+    *total_bytes_readed = presentation_position.transmittedOctets;
+  if (data_position)
+    *data_position = {
+        .tv_sec = static_cast<__kernel_old_time_t>(
+            presentation_position.transmittedOctetsTimestamp.tvSec),
+        .tv_nsec = static_cast<long>(
+            presentation_position.transmittedOctetsTimestamp.tvNSec)};
+  return ret_val;
+}
+
+void HidlToAidlMiddleware_2_0::UpdateTracksMetadata(
+    const SessionType_2_0& session_type,
+    const struct source_metadata* source_metadata) {
+  return BluetoothAudioSessionControl::UpdateSourceMetadata(
+      from_session_type_2_0(session_type), *source_metadata);
+}
+
+size_t HidlToAidlMiddleware_2_0::OutWritePcmData(
+    const SessionType_2_0& session_type, const void* buffer, size_t bytes) {
+  return BluetoothAudioSessionControl::OutWritePcmData(
+      from_session_type_2_0(session_type), buffer, bytes);
+}
+
+bool HidlToAidlMiddleware_2_0::IsAidlAvailable() {
+  return BluetoothAudioSession::IsAidlAvailable();
+}
+
+/***
+ *
+ * 2.1
+ *
+ ***/
+
+const AudioConfig_2_1 HidlToAidlMiddleware_2_1::GetAudioConfig(
+    const SessionType_2_1& session_type) {
+  return to_hidl_audio_config_2_1(BluetoothAudioSessionControl::GetAudioConfig(
+      from_session_type_2_1(session_type)));
+}
+
+/***
+ *
+ * 2.2
+ *
+ ***/
+
+bool HidlToAidlMiddleware_2_2::IsSessionReady(
+    const SessionType_2_1& session_type) {
+  return BluetoothAudioSessionControl::IsSessionReady(
+      from_session_type_2_1(session_type));
+}
+
+uint16_t HidlToAidlMiddleware_2_2::RegisterControlResultCback(
+    const SessionType_2_1& session_type,
+    const PortStatusCallbacks_2_2& cbacks) {
+  LOG(INFO) << __func__ << ": " << toString(session_type);
+  auto aidl_session_type = from_session_type_2_1(session_type);
+  // Pass the exact reference to the lambda
+  auto& session_legacy_callback_table =
+      legacy_callback_table[aidl_session_type];
+  PortStatusCallbacks aidl_callbacks{};
+  if (cbacks.control_result_cb_) {
+    aidl_callbacks.control_result_cb_ =
+        [&session_legacy_callback_table](uint16_t cookie, bool start_resp,
+                                         const BluetoothAudioStatus& status) {
+          if (session_legacy_callback_table.find(cookie) ==
+              session_legacy_callback_table.end()) {
+            LOG(ERROR) << __func__ << ": Unknown callback invoked!";
+            return;
+          }
+          auto& cback = session_legacy_callback_table[cookie];
+          cback->control_result_cb_(cookie, start_resp, to_hidl_status(status));
+        };
+  }
+  if (cbacks.session_changed_cb_) {
+    aidl_callbacks.session_changed_cb_ =
+        [&session_legacy_callback_table](uint16_t cookie) {
+          if (session_legacy_callback_table.find(cookie) ==
+              session_legacy_callback_table.end()) {
+            LOG(ERROR) << __func__ << ": Unknown callback invoked!";
+            return;
+          }
+          auto& cback = session_legacy_callback_table[cookie];
+          cback->session_changed_cb_(cookie);
+        };
+  };
+  if (cbacks.audio_configuration_changed_cb_) {
+    aidl_callbacks.audio_configuration_changed_cb_ =
+        [&session_legacy_callback_table](uint16_t cookie) {
+          if (session_legacy_callback_table.find(cookie) ==
+              session_legacy_callback_table.end()) {
+            LOG(ERROR) << __func__ << ": Unknown callback invoked!";
+            return;
+          }
+          auto& cback = session_legacy_callback_table[cookie];
+          cback->audio_configuration_changed_cb_(cookie);
+        };
+  };
+  auto cookie = BluetoothAudioSessionControl::RegisterControlResultCback(
+      aidl_session_type, aidl_callbacks);
+  {
+    std::lock_guard<std::mutex> guard(legacy_callback_lock);
+    session_legacy_callback_table[cookie] =
+        std::make_shared<PortStatusCallbacks_2_2>(cbacks);
+  }
+  return cookie;
+}
+
+void HidlToAidlMiddleware_2_2::UnregisterControlResultCback(
+    const SessionType_2_1& session_type, uint16_t cookie) {
+  LOG(INFO) << __func__ << ": " << toString(session_type);
+  auto aidl_session_type = from_session_type_2_1(session_type);
+  BluetoothAudioSessionControl::UnregisterControlResultCback(aidl_session_type,
+                                                             cookie);
+  auto& session_callback_table = legacy_callback_table[aidl_session_type];
+  if (session_callback_table.find(cookie) != session_callback_table.end()) {
+    std::lock_guard<std::mutex> guard(legacy_callback_lock);
+    session_callback_table.erase(cookie);
+  }
+}
+
+const AudioConfig_2_2 HidlToAidlMiddleware_2_2::GetAudioConfig(
+    const SessionType_2_1& session_type) {
+  return to_hidl_audio_config_2_2(BluetoothAudioSessionControl::GetAudioConfig(
+      from_session_type_2_1(session_type)));
+}
+
+bool HidlToAidlMiddleware_2_2::StartStream(
+    const SessionType_2_1& session_type) {
+  return BluetoothAudioSessionControl::StartStream(
+      from_session_type_2_1(session_type));
+}
+
+bool HidlToAidlMiddleware_2_2::SuspendStream(
+    const SessionType_2_1& session_type) {
+  return BluetoothAudioSessionControl::SuspendStream(
+      from_session_type_2_1(session_type));
+}
+
+void HidlToAidlMiddleware_2_2::StopStream(const SessionType_2_1& session_type) {
+  return BluetoothAudioSessionControl::StopStream(
+      from_session_type_2_1(session_type));
+}
+
+void HidlToAidlMiddleware_2_2::UpdateSinkMetadata(
+    const SessionType_2_1& session_type,
+    const struct sink_metadata* sink_metadata) {
+  return BluetoothAudioSessionControl::UpdateSinkMetadata(
+      from_session_type_2_1(session_type), *sink_metadata);
+}
+
+}  // namespace audio
+}  // namespace bluetooth
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
diff --git a/bluetooth/audio/utils/aidl_session/HidlToAidlMiddleware_2_0.h b/bluetooth/audio/utils/aidl_session/HidlToAidlMiddleware_2_0.h
new file mode 100644
index 0000000..d10ee37
--- /dev/null
+++ b/bluetooth/audio/utils/aidl_session/HidlToAidlMiddleware_2_0.h
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android/hardware/bluetooth/audio/2.0/types.h>
+
+#include "../session/BluetoothAudioSession.h"
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace audio {
+
+using SessionType_2_0 =
+    ::android::hardware::bluetooth::audio::V2_0::SessionType;
+using PortStatusCallbacks_2_0 =
+    ::android::bluetooth::audio::PortStatusCallbacks;
+using AudioConfig_2_0 =
+    ::android::hardware::bluetooth::audio::V2_0::AudioConfiguration;
+
+class HidlToAidlMiddleware_2_0 {
+ public:
+  static bool IsAidlAvailable();
+
+  static bool IsSessionReady(const SessionType_2_0& session_type);
+
+  static uint16_t RegisterControlResultCback(
+      const SessionType_2_0& session_type,
+      const PortStatusCallbacks_2_0& cbacks);
+
+  static void UnregisterControlResultCback(const SessionType_2_0& session_type,
+                                           uint16_t cookie);
+
+  static const AudioConfig_2_0 GetAudioConfig(
+      const SessionType_2_0& session_type);
+
+  static bool StartStream(const SessionType_2_0& session_type);
+
+  static void StopStream(const SessionType_2_0& session_type);
+
+  static bool SuspendStream(const SessionType_2_0& session_type);
+
+  static bool GetPresentationPosition(const SessionType_2_0& session_type,
+                                      uint64_t* remote_delay_report_ns,
+                                      uint64_t* total_bytes_readed,
+                                      timespec* data_position);
+
+  static void UpdateTracksMetadata(
+      const SessionType_2_0& session_type,
+      const struct source_metadata* source_metadata);
+
+  static size_t OutWritePcmData(const SessionType_2_0& session_type,
+                                const void* buffer, size_t bytes);
+};
+
+}  // namespace audio
+}  // namespace bluetooth
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
diff --git a/bluetooth/audio/utils/aidl_session/HidlToAidlMiddleware_2_1.h b/bluetooth/audio/utils/aidl_session/HidlToAidlMiddleware_2_1.h
new file mode 100644
index 0000000..82dce96
--- /dev/null
+++ b/bluetooth/audio/utils/aidl_session/HidlToAidlMiddleware_2_1.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android/hardware/bluetooth/audio/2.1/types.h>
+
+#include "../session/BluetoothAudioSession.h"
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace audio {
+
+using SessionType_2_1 =
+    ::android::hardware::bluetooth::audio::V2_1::SessionType;
+using AudioConfig_2_1 =
+    ::android::hardware::bluetooth::audio::V2_1::AudioConfiguration;
+
+class HidlToAidlMiddleware_2_1 {
+ public:
+  static const AudioConfig_2_1 GetAudioConfig(
+      const SessionType_2_1& session_type);
+};
+
+}  // namespace audio
+}  // namespace bluetooth
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
diff --git a/bluetooth/audio/utils/aidl_session/HidlToAidlMiddleware_2_2.h b/bluetooth/audio/utils/aidl_session/HidlToAidlMiddleware_2_2.h
new file mode 100644
index 0000000..149e404
--- /dev/null
+++ b/bluetooth/audio/utils/aidl_session/HidlToAidlMiddleware_2_2.h
@@ -0,0 +1,65 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android/hardware/bluetooth/audio/2.2/types.h>
+
+#include "../session/BluetoothAudioSession.h"
+#include "../session/BluetoothAudioSession_2_2.h"
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace bluetooth {
+namespace audio {
+
+using SessionType_2_1 =
+    ::android::hardware::bluetooth::audio::V2_1::SessionType;
+using PortStatusCallbacks_2_0 =
+    ::android::bluetooth::audio::PortStatusCallbacks;
+using PortStatusCallbacks_2_2 =
+    ::android::bluetooth::audio::PortStatusCallbacks_2_2;
+using AudioConfig_2_2 =
+    ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration;
+
+class HidlToAidlMiddleware_2_2 {
+ public:
+  static bool IsSessionReady(const SessionType_2_1& session_type);
+
+  static uint16_t RegisterControlResultCback(
+      const SessionType_2_1& session_type,
+      const PortStatusCallbacks_2_2& cbacks);
+
+  static void UnregisterControlResultCback(const SessionType_2_1& session_type,
+                                           uint16_t cookie);
+
+  static const AudioConfig_2_2 GetAudioConfig(
+      const SessionType_2_1& session_type);
+
+  static bool StartStream(const SessionType_2_1& session_type);
+
+  static bool SuspendStream(const SessionType_2_1& session_type);
+
+  static void StopStream(const SessionType_2_1& session_type);
+
+  static void UpdateSinkMetadata(const SessionType_2_1& session_type,
+                                 const struct sink_metadata* sink_metadata);
+};
+
+}  // namespace audio
+}  // namespace bluetooth
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
diff --git a/bluetooth/audio/utils/session/BluetoothAudioSession.cpp b/bluetooth/audio/utils/session/BluetoothAudioSession.cpp
index 2f3ddaf..6d5608b 100644
--- a/bluetooth/audio/utils/session/BluetoothAudioSession.cpp
+++ b/bluetooth/audio/utils/session/BluetoothAudioSession.cpp
@@ -21,10 +21,13 @@
 #include <android-base/logging.h>
 #include <android-base/stringprintf.h>
 
+#include "../aidl_session/HidlToAidlMiddleware_2_0.h"
+
 namespace android {
 namespace bluetooth {
 namespace audio {
 
+using ::aidl::android::hardware::bluetooth::audio::HidlToAidlMiddleware_2_0;
 using ::android::hardware::audio::common::V5_0::AudioContentType;
 using ::android::hardware::audio::common::V5_0::AudioUsage;
 using ::android::hardware::audio::common::V5_0::PlaybackTrackMetadata;
@@ -149,6 +152,8 @@
 // The function helps to check if this session is ready or not
 // @return: true if the Bluetooth stack has started the specified session
 bool BluetoothAudioSession::IsSessionReady() {
+  if (HidlToAidlMiddleware_2_0::IsAidlAvailable())
+    return HidlToAidlMiddleware_2_0::IsSessionReady(session_type_);
   std::lock_guard<std::recursive_mutex> guard(mutex_);
   bool dataMQ_valid =
       (session_type_ == SessionType::A2DP_HARDWARE_OFFLOAD_DATAPATH ||
@@ -200,6 +205,9 @@
 // @return: cookie - the assigned number to this bluetooth_audio output
 uint16_t BluetoothAudioSession::RegisterStatusCback(
     const PortStatusCallbacks& cbacks) {
+  if (HidlToAidlMiddleware_2_0::IsAidlAvailable())
+    return HidlToAidlMiddleware_2_0::RegisterControlResultCback(session_type_,
+                                                                cbacks);
   std::lock_guard<std::recursive_mutex> guard(mutex_);
   uint16_t cookie = ObserversCookieGetInitValue(session_type_);
   uint16_t cookie_upper_bound = ObserversCookieGetUpperBound(session_type_);
@@ -227,6 +235,9 @@
 // PortStatusCallbacks
 // @param: cookie - indicates which bluetooth_audio output is
 void BluetoothAudioSession::UnregisterStatusCback(uint16_t cookie) {
+  if (HidlToAidlMiddleware_2_0::IsAidlAvailable())
+    return HidlToAidlMiddleware_2_0::UnregisterControlResultCback(session_type_,
+                                                                  cookie);
   std::lock_guard<std::recursive_mutex> guard(mutex_);
   if (observers_.erase(cookie) != 1) {
     LOG(WARNING) << __func__ << " - SessionType=" << toString(session_type_)
@@ -238,6 +249,9 @@
 // The control function is for the bluetooth_audio module to get the current
 // AudioConfiguration
 const AudioConfiguration& BluetoothAudioSession::GetAudioConfig() {
+  if (HidlToAidlMiddleware_2_0::IsAidlAvailable())
+    return (audio_config_ =
+                HidlToAidlMiddleware_2_0::GetAudioConfig(session_type_));
   std::lock_guard<std::recursive_mutex> guard(mutex_);
   if (IsSessionReady()) {
     return audio_config_;
@@ -251,6 +265,8 @@
 // Those control functions are for the bluetooth_audio module to start, suspend,
 // stop stream, to check position, and to update metadata.
 bool BluetoothAudioSession::StartStream() {
+  if (HidlToAidlMiddleware_2_0::IsAidlAvailable())
+    return HidlToAidlMiddleware_2_0::StartStream(session_type_);
   std::lock_guard<std::recursive_mutex> guard(mutex_);
   if (!IsSessionReady()) {
     LOG(DEBUG) << __func__ << " - SessionType=" << toString(session_type_)
@@ -267,6 +283,8 @@
 }
 
 bool BluetoothAudioSession::SuspendStream() {
+  if (HidlToAidlMiddleware_2_0::IsAidlAvailable())
+    return HidlToAidlMiddleware_2_0::SuspendStream(session_type_);
   std::lock_guard<std::recursive_mutex> guard(mutex_);
   if (!IsSessionReady()) {
     LOG(DEBUG) << __func__ << " - SessionType=" << toString(session_type_)
@@ -283,6 +301,8 @@
 }
 
 void BluetoothAudioSession::StopStream() {
+  if (HidlToAidlMiddleware_2_0::IsAidlAvailable())
+    return HidlToAidlMiddleware_2_0::StopStream(session_type_);
   std::lock_guard<std::recursive_mutex> guard(mutex_);
   if (!IsSessionReady()) {
     return;
@@ -297,6 +317,10 @@
 bool BluetoothAudioSession::GetPresentationPosition(
     uint64_t* remote_delay_report_ns, uint64_t* total_bytes_readed,
     timespec* data_position) {
+  if (HidlToAidlMiddleware_2_0::IsAidlAvailable())
+    return HidlToAidlMiddleware_2_0::GetPresentationPosition(
+        session_type_, remote_delay_report_ns, total_bytes_readed,
+        data_position);
   std::lock_guard<std::recursive_mutex> guard(mutex_);
   if (!IsSessionReady()) {
     LOG(DEBUG) << __func__ << " - SessionType=" << toString(session_type_)
@@ -330,6 +354,9 @@
 
 void BluetoothAudioSession::UpdateTracksMetadata(
     const struct source_metadata* source_metadata) {
+  if (HidlToAidlMiddleware_2_0::IsAidlAvailable())
+    return HidlToAidlMiddleware_2_0::UpdateTracksMetadata(session_type_,
+                                                          source_metadata);
   std::lock_guard<std::recursive_mutex> guard(mutex_);
   if (!IsSessionReady()) {
     LOG(DEBUG) << __func__ << " - SessionType=" << toString(session_type_)
@@ -374,6 +401,9 @@
 // The control function writes stream to FMQ
 size_t BluetoothAudioSession::OutWritePcmData(const void* buffer,
                                               size_t bytes) {
+  if (HidlToAidlMiddleware_2_0::IsAidlAvailable())
+    return HidlToAidlMiddleware_2_0::OutWritePcmData(session_type_, buffer,
+                                                     bytes);
   if (buffer == nullptr || !bytes) return 0;
   size_t totalWritten = 0;
   int ms_timeout = kFmqSendTimeoutMs;
diff --git a/bluetooth/audio/utils/session/BluetoothAudioSessionControl_2_2.h b/bluetooth/audio/utils/session/BluetoothAudioSessionControl_2_2.h
index b4ba8cf..368939e 100644
--- a/bluetooth/audio/utils/session/BluetoothAudioSessionControl_2_2.h
+++ b/bluetooth/audio/utils/session/BluetoothAudioSessionControl_2_2.h
@@ -48,20 +48,38 @@
     std::shared_ptr<BluetoothAudioSession_2_2> session_ptr =
         BluetoothAudioSessionInstance_2_2::GetSessionInstance(session_type);
     if (session_ptr != nullptr) {
-      return session_ptr->GetAudioSession()->RegisterStatusCback(cbacks);
+      PortStatusCallbacks_2_2 cb = {
+          .control_result_cb_ = cbacks.control_result_cb_,
+          .session_changed_cb_ = cbacks.session_changed_cb_,
+          .audio_configuration_changed_cb_ = nullptr};
+      return session_ptr->RegisterStatusCback(cb);
+    }
+    return kObserversCookieUndefined;
+  }
+
+  // The control API helps the bluetooth_audio module to register
+  // PortStatusCallbacks_2_2
+  // @return: cookie - the assigned number to this bluetooth_audio output
+  static uint16_t RegisterControlResultCback(
+      const SessionType_2_1& session_type,
+      const PortStatusCallbacks_2_2& cbacks) {
+    std::shared_ptr<BluetoothAudioSession_2_2> session_ptr =
+        BluetoothAudioSessionInstance_2_2::GetSessionInstance(session_type);
+    if (session_ptr != nullptr) {
+      return session_ptr->RegisterStatusCback(cbacks);
     }
     return kObserversCookieUndefined;
   }
 
   // The control API helps the bluetooth_audio module to unregister
-  // PortStatusCallbacks
+  // PortStatusCallbacks and PortStatusCallbacks_2_2
   // @param: cookie - indicates which bluetooth_audio output is
   static void UnregisterControlResultCback(const SessionType_2_1& session_type,
                                            uint16_t cookie) {
     std::shared_ptr<BluetoothAudioSession_2_2> session_ptr =
         BluetoothAudioSessionInstance_2_2::GetSessionInstance(session_type);
     if (session_ptr != nullptr) {
-      session_ptr->GetAudioSession()->UnregisterStatusCback(cookie);
+      session_ptr->UnregisterStatusCback(cookie);
     }
   }
 
@@ -76,6 +94,12 @@
     } else if (session_type ==
                SessionType_2_1::A2DP_HARDWARE_OFFLOAD_DATAPATH) {
       return BluetoothAudioSession_2_2::kInvalidOffloadAudioConfiguration;
+    } else if (
+        session_type ==
+            SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH ||
+        session_type ==
+            SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
+      return BluetoothAudioSession_2_2::kInvalidLeOffloadAudioConfiguration;
     } else {
       return BluetoothAudioSession_2_2::kInvalidSoftwareAudioConfiguration;
     }
@@ -87,7 +111,7 @@
     std::shared_ptr<BluetoothAudioSession_2_2> session_ptr =
         BluetoothAudioSessionInstance_2_2::GetSessionInstance(session_type);
     if (session_ptr != nullptr) {
-      return session_ptr->GetAudioSession()->StartStream();
+      return session_ptr->StartStream();
     }
     return false;
   }
@@ -96,7 +120,7 @@
     std::shared_ptr<BluetoothAudioSession_2_2> session_ptr =
         BluetoothAudioSessionInstance_2_2::GetSessionInstance(session_type);
     if (session_ptr != nullptr) {
-      return session_ptr->GetAudioSession()->SuspendStream();
+      return session_ptr->SuspendStream();
     }
     return false;
   }
@@ -105,7 +129,7 @@
     std::shared_ptr<BluetoothAudioSession_2_2> session_ptr =
         BluetoothAudioSessionInstance_2_2::GetSessionInstance(session_type);
     if (session_ptr != nullptr) {
-      session_ptr->GetAudioSession()->StopStream();
+      session_ptr->StopStream();
     }
   }
 
diff --git a/bluetooth/audio/utils/session/BluetoothAudioSessionReport_2_2.h b/bluetooth/audio/utils/session/BluetoothAudioSessionReport_2_2.h
index 194259a..17e140e 100644
--- a/bluetooth/audio/utils/session/BluetoothAudioSessionReport_2_2.h
+++ b/bluetooth/audio/utils/session/BluetoothAudioSessionReport_2_2.h
@@ -48,7 +48,7 @@
     std::shared_ptr<BluetoothAudioSession_2_2> session_ptr =
         BluetoothAudioSessionInstance_2_2::GetSessionInstance(session_type);
     if (session_ptr != nullptr) {
-      session_ptr->GetAudioSession()->OnSessionEnded();
+      session_ptr->OnSessionEnded();
     }
   }
   // The API reports the Bluetooth stack has replied the result of startStream
@@ -60,7 +60,20 @@
     std::shared_ptr<BluetoothAudioSession_2_2> session_ptr =
         BluetoothAudioSessionInstance_2_2::GetSessionInstance(session_type);
     if (session_ptr != nullptr) {
-      session_ptr->GetAudioSession()->ReportControlStatus(start_resp, status);
+      session_ptr->ReportControlStatus(start_resp, status);
+    }
+  }
+  // The API reports the Bluetooth stack has replied the changed of the audio
+  // configuration, and will inform registered bluetooth_audio outputs
+  static void ReportAudioConfigChanged(
+      const ::android::hardware::bluetooth::audio::V2_1::SessionType&
+          session_type,
+      const ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration&
+          audio_config) {
+    std::shared_ptr<BluetoothAudioSession_2_2> session_ptr =
+        BluetoothAudioSessionInstance_2_2::GetSessionInstance(session_type);
+    if (session_ptr != nullptr) {
+      session_ptr->ReportAudioConfigChanged(audio_config);
     }
   }
 };
diff --git a/bluetooth/audio/utils/session/BluetoothAudioSession_2_1.cpp b/bluetooth/audio/utils/session/BluetoothAudioSession_2_1.cpp
index 646e225..276a291 100644
--- a/bluetooth/audio/utils/session/BluetoothAudioSession_2_1.cpp
+++ b/bluetooth/audio/utils/session/BluetoothAudioSession_2_1.cpp
@@ -21,9 +21,14 @@
 #include <android-base/logging.h>
 #include <android-base/stringprintf.h>
 
+#include "../aidl_session/HidlToAidlMiddleware_2_0.h"
+#include "../aidl_session/HidlToAidlMiddleware_2_1.h"
+
 namespace android {
 namespace bluetooth {
 namespace audio {
+using ::aidl::android::hardware::bluetooth::audio::HidlToAidlMiddleware_2_0;
+using ::aidl::android::hardware::bluetooth::audio::HidlToAidlMiddleware_2_1;
 using SessionType_2_1 =
     ::android::hardware::bluetooth::audio::V2_1::SessionType;
 using SessionType_2_0 =
@@ -46,6 +51,19 @@
     return false;
   }
 }
+
+bool is_unsupported_2_1_session_type(
+    const ::android::hardware::bluetooth::audio::V2_1::SessionType&
+        session_type) {
+  if (session_type ==
+          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH ||
+      session_type ==
+          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
+    return true;
+  } else {
+    return false;
+  }
+}
 }  // namespace
 
 BluetoothAudioSession_2_1::BluetoothAudioSession_2_1(
@@ -53,11 +71,13 @@
         session_type)
     : audio_session(BluetoothAudioSessionInstance::GetSessionInstance(
           static_cast<SessionType_2_0>(session_type))) {
-  if (is_2_0_session_type(session_type)) {
+  if (is_2_0_session_type(session_type) ||
+      is_unsupported_2_1_session_type(session_type)) {
     session_type_2_1_ = (SessionType_2_1::UNKNOWN);
   } else {
     session_type_2_1_ = (session_type);
   }
+  raw_session_type_ = session_type;
 }
 
 std::shared_ptr<BluetoothAudioSession>
@@ -69,6 +89,8 @@
 // AudioConfiguration
 const ::android::hardware::bluetooth::audio::V2_1::AudioConfiguration
 BluetoothAudioSession_2_1::GetAudioConfig() {
+  if (HidlToAidlMiddleware_2_0::IsAidlAvailable())
+    return HidlToAidlMiddleware_2_1::GetAudioConfig(raw_session_type_);
   std::lock_guard<std::recursive_mutex> guard(audio_session->mutex_);
   if (audio_session->IsSessionReady()) {
     // If session is unknown it means it should be 2.0 type
@@ -80,7 +102,7 @@
     // pcmConfig only differs between 2.0 and 2.1 in AudioConfiguration
     if (fromConf.getDiscriminator() ==
         AudioConfiguration::hidl_discriminator::codecConfig) {
-      toConf.codecConfig() = fromConf.codecConfig();
+      toConf.codecConfig(fromConf.codecConfig());
     } else {
       toConf.pcmConfig() = {
           .sampleRate = static_cast<
diff --git a/bluetooth/audio/utils/session/BluetoothAudioSession_2_1.h b/bluetooth/audio/utils/session/BluetoothAudioSession_2_1.h
index 5a35153..e634064 100644
--- a/bluetooth/audio/utils/session/BluetoothAudioSession_2_1.h
+++ b/bluetooth/audio/utils/session/BluetoothAudioSession_2_1.h
@@ -31,6 +31,7 @@
   std::shared_ptr<BluetoothAudioSession> audio_session;
 
   ::android::hardware::bluetooth::audio::V2_1::SessionType session_type_2_1_;
+  ::android::hardware::bluetooth::audio::V2_1::SessionType raw_session_type_;
 
   // audio data configuration for both software and offloading
   ::android::hardware::bluetooth::audio::V2_1::AudioConfiguration
diff --git a/bluetooth/audio/utils/session/BluetoothAudioSession_2_2.cpp b/bluetooth/audio/utils/session/BluetoothAudioSession_2_2.cpp
index 80df5d9..4613ddc 100644
--- a/bluetooth/audio/utils/session/BluetoothAudioSession_2_2.cpp
+++ b/bluetooth/audio/utils/session/BluetoothAudioSession_2_2.cpp
@@ -22,13 +22,25 @@
 #include <android-base/stringprintf.h>
 #include <android/hardware/bluetooth/audio/2.2/IBluetoothAudioPort.h>
 
+#include "../aidl_session/HidlToAidlMiddleware_2_0.h"
+#include "../aidl_session/HidlToAidlMiddleware_2_2.h"
+
 namespace android {
 namespace bluetooth {
 namespace audio {
 
+using ::aidl::android::hardware::bluetooth::audio::HidlToAidlMiddleware_2_0;
+using ::aidl::android::hardware::bluetooth::audio::HidlToAidlMiddleware_2_2;
 using ::android::hardware::audio::common::V5_0::AudioSource;
 using ::android::hardware::audio::common::V5_0::RecordTrackMetadata;
 using ::android::hardware::audio::common::V5_0::SinkMetadata;
+using ::android::hardware::bluetooth::audio::V2_0::BitsPerSample;
+using ::android::hardware::bluetooth::audio::V2_0::ChannelMode;
+using ::android::hardware::bluetooth::audio::V2_2::LeAudioConfiguration;
+using ::android::hardware::bluetooth::audio::V2_2::LeAudioMode;
+using PcmParameters_2_1 =
+    ::android::hardware::bluetooth::audio::V2_1::PcmParameters;
+using SampleRate_2_1 = ::android::hardware::bluetooth::audio::V2_1::SampleRate;
 
 using SessionType_2_1 =
     ::android::hardware::bluetooth::audio::V2_1::SessionType;
@@ -38,10 +50,24 @@
 using AudioConfiguration_2_1 =
     ::android::hardware::bluetooth::audio::V2_1::AudioConfiguration;
 
+static constexpr PcmParameters_2_1 kInvalidPcmParameters = {
+    .sampleRate = SampleRate_2_1::RATE_UNKNOWN,
+    .channelMode = ChannelMode::UNKNOWN,
+    .bitsPerSample = BitsPerSample::BITS_UNKNOWN,
+    .dataIntervalUs = 0,
+};
+
+static LeAudioConfiguration kInvalidLeAudioConfig = {
+    .mode = LeAudioMode::UNKNOWN,
+    .config = {},
+};
+
 ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration
     BluetoothAudioSession_2_2::invalidSoftwareAudioConfiguration = {};
 ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration
     BluetoothAudioSession_2_2::invalidOffloadAudioConfiguration = {};
+::android::hardware::bluetooth::audio::V2_2::AudioConfiguration
+    BluetoothAudioSession_2_2::invalidLeOffloadAudioConfiguration = {};
 
 using IBluetoothAudioPort_2_2 =
     ::android::hardware::bluetooth::audio::V2_2::IBluetoothAudioPort;
@@ -72,11 +98,20 @@
   } else {
     session_type_2_1_ = (session_type);
   }
+  raw_session_type_ = session_type;
+  invalidSoftwareAudioConfiguration.pcmConfig(kInvalidPcmParameters);
+  invalidOffloadAudioConfiguration.codecConfig(
+      audio_session->kInvalidCodecConfiguration);
+  invalidLeOffloadAudioConfiguration.leAudioConfig(kInvalidLeAudioConfig);
 }
 
 bool BluetoothAudioSession_2_2::IsSessionReady() {
+  if (HidlToAidlMiddleware_2_0::IsAidlAvailable())
+    return HidlToAidlMiddleware_2_2::IsSessionReady(raw_session_type_);
   if (session_type_2_1_ !=
-      SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH) {
+          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH &&
+      session_type_2_1_ !=
+          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
     return audio_session->IsSessionReady();
   }
 
@@ -95,6 +130,9 @@
 
 void BluetoothAudioSession_2_2::UpdateSinkMetadata(
     const struct sink_metadata* sink_metadata) {
+  if (HidlToAidlMiddleware_2_0::IsAidlAvailable())
+    return HidlToAidlMiddleware_2_2::UpdateSinkMetadata(raw_session_type_,
+                                                        sink_metadata);
   std::lock_guard<std::recursive_mutex> guard(audio_session->mutex_);
   if (!IsSessionReady()) {
     LOG(DEBUG) << __func__ << " - SessionType=" << toString(session_type_2_1_)
@@ -145,11 +183,21 @@
 // AudioConfiguration
 const ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration
 BluetoothAudioSession_2_2::GetAudioConfig() {
+  if (HidlToAidlMiddleware_2_0::IsAidlAvailable())
+    return HidlToAidlMiddleware_2_2::GetAudioConfig(raw_session_type_);
   std::lock_guard<std::recursive_mutex> guard(audio_session->mutex_);
   if (IsSessionReady()) {
+    auto audio_config_discriminator = audio_config_2_2_.getDiscriminator();
     // If session is unknown it means it should be 2.0 type
     if (session_type_2_1_ != SessionType_2_1::UNKNOWN) {
-      if (audio_config_2_2_ != invalidSoftwareAudioConfiguration)
+      if ((audio_config_discriminator ==
+               ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration::
+                   hidl_discriminator::pcmConfig &&
+           audio_config_2_2_ != kInvalidSoftwareAudioConfiguration) ||
+          (audio_config_discriminator ==
+               ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration::
+                   hidl_discriminator::leAudioConfig &&
+           audio_config_2_2_ != kInvalidLeOffloadAudioConfiguration))
         return audio_config_2_2_;
 
       ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration toConf;
@@ -157,7 +205,7 @@
           GetAudioSession_2_1()->GetAudioConfig();
       if (fromConf.getDiscriminator() ==
           AudioConfiguration_2_1::hidl_discriminator::pcmConfig) {
-        toConf.pcmConfig() = fromConf.pcmConfig();
+        toConf.pcmConfig(fromConf.pcmConfig());
         return toConf;
       }
     }
@@ -167,7 +215,7 @@
     // pcmConfig only differs between 2.0 and 2.1 in AudioConfiguration
     if (fromConf.getDiscriminator() ==
         AudioConfiguration::hidl_discriminator::codecConfig) {
-      toConf.codecConfig() = fromConf.codecConfig();
+      toConf.codecConfig(fromConf.codecConfig());
     } else {
       toConf.pcmConfig() = {
           .sampleRate = static_cast<
@@ -179,13 +227,67 @@
     }
     return toConf;
   } else if (session_type_2_1_ ==
-             SessionType_2_1::A2DP_HARDWARE_OFFLOAD_DATAPATH) {
-    return kInvalidOffloadAudioConfiguration;
+                 SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH ||
+             session_type_2_1_ ==
+                 SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
+    return kInvalidLeOffloadAudioConfiguration;
   } else {
     return kInvalidSoftwareAudioConfiguration;
   }
 }
 
+// Those control functions are for the bluetooth_audio module to start, suspend,
+// stop stream, to check position, and to update metadata.
+bool BluetoothAudioSession_2_2::StartStream() {
+  if (HidlToAidlMiddleware_2_0::IsAidlAvailable())
+    return HidlToAidlMiddleware_2_2::StartStream(raw_session_type_);
+  std::lock_guard<std::recursive_mutex> guard(audio_session->mutex_);
+  if (!IsSessionReady()) {
+    LOG(DEBUG) << __func__ << " - SessionType=" << toString(session_type_2_1_)
+               << " has NO session";
+    return false;
+  }
+  auto hal_retval = audio_session->stack_iface_->startStream();
+  if (!hal_retval.isOk()) {
+    LOG(WARNING) << __func__ << " - IBluetoothAudioPort SessionType="
+                 << toString(session_type_2_1_) << " failed";
+    return false;
+  }
+  return true;
+}
+
+bool BluetoothAudioSession_2_2::SuspendStream() {
+  if (HidlToAidlMiddleware_2_0::IsAidlAvailable())
+    return HidlToAidlMiddleware_2_2::SuspendStream(raw_session_type_);
+  std::lock_guard<std::recursive_mutex> guard(audio_session->mutex_);
+  if (!IsSessionReady()) {
+    LOG(DEBUG) << __func__ << " - SessionType=" << toString(session_type_2_1_)
+               << " has NO session";
+    return false;
+  }
+  auto hal_retval = audio_session->stack_iface_->suspendStream();
+  if (!hal_retval.isOk()) {
+    LOG(WARNING) << __func__ << " - IBluetoothAudioPort SessionType="
+                 << toString(session_type_2_1_) << " failed";
+    return false;
+  }
+  return true;
+}
+
+void BluetoothAudioSession_2_2::StopStream() {
+  if (HidlToAidlMiddleware_2_0::IsAidlAvailable())
+    return HidlToAidlMiddleware_2_2::StopStream(raw_session_type_);
+  std::lock_guard<std::recursive_mutex> guard(audio_session->mutex_);
+  if (!IsSessionReady()) {
+    return;
+  }
+  auto hal_retval = audio_session->stack_iface_->stopStream();
+  if (!hal_retval.isOk()) {
+    LOG(WARNING) << __func__ << " - IBluetoothAudioPort SessionType="
+                 << toString(session_type_2_1_) << " failed";
+  }
+}
+
 bool BluetoothAudioSession_2_2::UpdateAudioConfig(
     const ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration&
         audio_config) {
@@ -266,18 +368,196 @@
       LOG(ERROR) << __func__ << " - SessionType=" << toString(session_type_2_1_)
                  << " DataMQ Invalid";
       audio_config_2_2_ =
-          (session_type_2_1_ == SessionType_2_1::A2DP_HARDWARE_OFFLOAD_DATAPATH
-               ? kInvalidOffloadAudioConfiguration
+          ((session_type_2_1_ ==
+                SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH ||
+            session_type_2_1_ ==
+                SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH)
+               ? kInvalidLeOffloadAudioConfiguration
                : kInvalidSoftwareAudioConfiguration);
     } else {
       audio_session->stack_iface_ = stack_iface;
       LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_2_1_)
                 << ", AudioConfiguration=" << toString(audio_config);
-      audio_session->ReportSessionStatus();
+      ReportSessionStatus();
     };
   }
 }
 
+// The report function is used to report that the Bluetooth stack has ended the
+// session, and will invoke session_changed_cb_ to notify registered
+// bluetooth_audio outputs
+void BluetoothAudioSession_2_2::OnSessionEnded() {
+  std::lock_guard<std::recursive_mutex> guard(audio_session->mutex_);
+  bool toggled = IsSessionReady();
+  LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_2_1_);
+  if (session_type_2_1_ == SessionType_2_1::UNKNOWN) {
+    audio_session->OnSessionEnded();
+    return;
+  }
+
+  audio_config_2_2_ =
+      ((session_type_2_1_ ==
+            SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH ||
+        session_type_2_1_ ==
+            SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH)
+           ? kInvalidLeOffloadAudioConfiguration
+           : kInvalidSoftwareAudioConfiguration);
+  audio_session->stack_iface_ = nullptr;
+  audio_session->UpdateDataPath(nullptr);
+  if (toggled) {
+    ReportSessionStatus();
+  }
+}
+
+// The control function helps the bluetooth_audio module to register
+// PortStatusCallbacks_2_2
+// @return: cookie - the assigned number to this bluetooth_audio output
+uint16_t BluetoothAudioSession_2_2::RegisterStatusCback(
+    const PortStatusCallbacks_2_2& cbacks) {
+  if (HidlToAidlMiddleware_2_0::IsAidlAvailable())
+    return HidlToAidlMiddleware_2_2::RegisterControlResultCback(
+        raw_session_type_, cbacks);
+  if (session_type_2_1_ !=
+          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH &&
+      session_type_2_1_ !=
+          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
+    PortStatusCallbacks cb = {
+        .control_result_cb_ = cbacks.control_result_cb_,
+        .session_changed_cb_ = cbacks.session_changed_cb_};
+    return audio_session->RegisterStatusCback(cb);
+  }
+
+  std::lock_guard<std::recursive_mutex> guard(audio_session->mutex_);
+  uint16_t cookie = ObserversCookieGetInitValue(session_type_2_1_);
+  uint16_t cookie_upper_bound = ObserversCookieGetUpperBound(session_type_2_1_);
+
+  while (cookie < cookie_upper_bound) {
+    if (observers_.find(cookie) == observers_.end()) {
+      break;
+    }
+    ++cookie;
+  }
+  if (cookie >= cookie_upper_bound) {
+    LOG(ERROR) << __func__ << " - SessionType=" << toString(session_type_2_1_)
+               << " has " << observers_.size()
+               << " observers already (No Resource)";
+    return kObserversCookieUndefined;
+  }
+  std::shared_ptr<struct PortStatusCallbacks_2_2> cb =
+      std::make_shared<struct PortStatusCallbacks_2_2>();
+  *cb = cbacks;
+  observers_[cookie] = cb;
+  return cookie;
+}
+
+// The control function helps the bluetooth_audio module to unregister
+// PortStatusCallbacks_2_2
+// @param: cookie - indicates which bluetooth_audio output is
+void BluetoothAudioSession_2_2::UnregisterStatusCback(uint16_t cookie) {
+  if (HidlToAidlMiddleware_2_0::IsAidlAvailable())
+    return HidlToAidlMiddleware_2_2::UnregisterControlResultCback(
+        raw_session_type_, cookie);
+  std::lock_guard<std::recursive_mutex> guard(audio_session->mutex_);
+  if (session_type_2_1_ !=
+          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH &&
+      session_type_2_1_ !=
+          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
+    audio_session->UnregisterStatusCback(cookie);
+    return;
+  }
+  if (observers_.erase(cookie) != 1) {
+    LOG(WARNING) << __func__ << " - SessionType=" << toString(session_type_2_1_)
+                 << " no such provider=0x"
+                 << android::base::StringPrintf("%04x", cookie);
+  }
+}
+
+// invoking the registered session_changed_cb_
+void BluetoothAudioSession_2_2::ReportSessionStatus() {
+  // This is locked already by OnSessionStarted / OnSessionEnded
+  if (session_type_2_1_ !=
+          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH &&
+      session_type_2_1_ !=
+          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
+    audio_session->ReportSessionStatus();
+    return;
+  }
+  if (observers_.empty()) {
+    LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_2_1_)
+              << " has NO port state observer";
+    return;
+  }
+  for (auto& observer : observers_) {
+    uint16_t cookie = observer.first;
+    std::shared_ptr<struct PortStatusCallbacks_2_2> cb = observer.second;
+    LOG(INFO) << __func__ << " - SessionType=" << toString(session_type_2_1_)
+              << " notify to bluetooth_audio=0x"
+              << android::base::StringPrintf("%04x", cookie);
+    cb->session_changed_cb_(cookie);
+  }
+}
+
+// The report function is used to report that the Bluetooth stack has notified
+// the result of startStream or suspendStream, and will invoke
+// control_result_cb_ to notify registered bluetooth_audio outputs
+void BluetoothAudioSession_2_2::ReportControlStatus(
+    bool start_resp, const BluetoothAudioStatus& status) {
+  if (session_type_2_1_ !=
+          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH &&
+      session_type_2_1_ !=
+          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
+    audio_session->ReportControlStatus(start_resp, status);
+    return;
+  }
+  std::lock_guard<std::recursive_mutex> guard(audio_session->mutex_);
+  if (observers_.empty()) {
+    LOG(WARNING) << __func__ << " - SessionType=" << toString(session_type_2_1_)
+                 << " has NO port state observer";
+    return;
+  }
+  for (auto& observer : observers_) {
+    uint16_t cookie = observer.first;
+    std::shared_ptr<struct PortStatusCallbacks_2_2> cb = observer.second;
+    LOG(INFO) << __func__ << " - status=" << toString(status)
+              << " for SessionType=" << toString(session_type_2_1_)
+              << ", bluetooth_audio=0x"
+              << android::base::StringPrintf("%04x", cookie)
+              << (start_resp ? " started" : " suspended");
+    cb->control_result_cb_(cookie, start_resp, status);
+  }
+}
+
+// The report function is used to report that the Bluetooth stack has notified
+// the result of startStream or suspendStream, and will invoke
+// control_result_cb_ to notify registered bluetooth_audio outputs
+void BluetoothAudioSession_2_2::ReportAudioConfigChanged(
+    const ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration&
+        audio_config) {
+  if (session_type_2_1_ !=
+          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH &&
+      session_type_2_1_ !=
+          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
+    return;
+  }
+  std::lock_guard<std::recursive_mutex> guard(audio_session->mutex_);
+  audio_config_2_2_ = audio_config;
+  if (observers_.empty()) {
+    LOG(WARNING) << __func__ << " - SessionType=" << toString(session_type_2_1_)
+                 << " has NO port state observer";
+    return;
+  }
+  for (auto& observer : observers_) {
+    uint16_t cookie = observer.first;
+    std::shared_ptr<struct PortStatusCallbacks_2_2> cb = observer.second;
+    LOG(INFO) << __func__ << " for SessionType=" << toString(session_type_2_1_)
+              << ", bluetooth_audio=0x"
+              << android::base::StringPrintf("%04x", cookie);
+    if (cb->audio_configuration_changed_cb_ != nullptr) {
+      cb->audio_configuration_changed_cb_(cookie);
+    }
+  }
+}
+
 std::unique_ptr<BluetoothAudioSessionInstance_2_2>
     BluetoothAudioSessionInstance_2_2::instance_ptr =
         std::unique_ptr<BluetoothAudioSessionInstance_2_2>(
diff --git a/bluetooth/audio/utils/session/BluetoothAudioSession_2_2.h b/bluetooth/audio/utils/session/BluetoothAudioSession_2_2.h
index d6ae3d7..b6f96ab 100644
--- a/bluetooth/audio/utils/session/BluetoothAudioSession_2_2.h
+++ b/bluetooth/audio/utils/session/BluetoothAudioSession_2_2.h
@@ -28,12 +28,47 @@
 namespace bluetooth {
 namespace audio {
 
+inline uint16_t ObserversCookieGetInitValue(
+    const ::android::hardware::bluetooth::audio::V2_1::SessionType&
+        session_type) {
+  return (static_cast<uint16_t>(session_type) << 8 & 0xff00);
+}
+inline uint16_t ObserversCookieGetUpperBound(
+    const ::android::hardware::bluetooth::audio::V2_1::SessionType&
+        session_type) {
+  return (static_cast<uint16_t>(session_type) << 8 & 0xff00) +
+         kObserversCookieSize;
+}
+
+struct PortStatusCallbacks_2_2 {
+  // control_result_cb_ - when the Bluetooth stack reports results of
+  // streamStarted or streamSuspended, the BluetoothAudioProvider will invoke
+  // this callback to report to the bluetooth_audio module.
+  // @param: cookie - indicates which bluetooth_audio output should handle
+  // @param: start_resp - this report is for startStream or not
+  // @param: status - the result of startStream
+  std::function<void(uint16_t cookie, bool start_resp,
+                     const BluetoothAudioStatus& status)>
+      control_result_cb_;
+  // session_changed_cb_ - when the Bluetooth stack start / end session, the
+  // BluetoothAudioProvider will invoke this callback to notify to the
+  // bluetooth_audio module.
+  // @param: cookie - indicates which bluetooth_audio output should handle
+  std::function<void(uint16_t cookie)> session_changed_cb_;
+  // audio_configuration_changed_cb_ - when the Bluetooth stack change the audio
+  // configuration, the BluetoothAudioProvider will invoke this callback to
+  // notify to the bluetooth_audio module.
+  // @param: cookie - indicates which bluetooth_audio output should handle
+  std::function<void(uint16_t cookie)> audio_configuration_changed_cb_;
+};
+
 class BluetoothAudioSession_2_2 {
  private:
   std::shared_ptr<BluetoothAudioSession> audio_session;
   std::shared_ptr<BluetoothAudioSession_2_1> audio_session_2_1;
 
   ::android::hardware::bluetooth::audio::V2_1::SessionType session_type_2_1_;
+  ::android::hardware::bluetooth::audio::V2_1::SessionType raw_session_type_;
 
   // audio data configuration for both software and offloading
   ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration
@@ -47,6 +82,15 @@
       invalidSoftwareAudioConfiguration;
   static ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration
       invalidOffloadAudioConfiguration;
+  static ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration
+      invalidLeOffloadAudioConfiguration;
+
+  // saving those registered bluetooth_audio's callbacks
+  std::unordered_map<uint16_t, std::shared_ptr<struct PortStatusCallbacks_2_2>>
+      observers_;
+
+  // invoking the registered session_changed_cb_
+  void ReportSessionStatus();
 
  public:
   BluetoothAudioSession_2_2(
@@ -69,6 +113,40 @@
       const ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration&
           audio_config);
 
+  // The report function is used to report that the Bluetooth stack has ended
+  // the session, and will invoke session_changed_cb_ to notify registered
+  // bluetooth_audio outputs
+  void OnSessionEnded();
+
+  // Those control functions are for the bluetooth_audio module to start,
+  // suspend, stop stream, to check position, and to update metadata.
+  bool StartStream();
+  bool SuspendStream();
+  void StopStream();
+
+  // The control function helps the bluetooth_audio module to register
+  // PortStatusCallbacks_2_2
+  // @return: cookie - the assigned number to this bluetooth_audio output
+  uint16_t RegisterStatusCback(const PortStatusCallbacks_2_2& cbacks);
+
+  // The control function helps the bluetooth_audio module to unregister
+  // PortStatusCallbacks_2_2
+  // @param: cookie - indicates which bluetooth_audio output is
+  void UnregisterStatusCback(uint16_t cookie);
+
+  // The report function is used to report that the Bluetooth stack has notified
+  // the result of startStream or suspendStream, and will invoke
+  // control_result_cb_ to notify registered bluetooth_audio outputs
+  void ReportControlStatus(bool start_resp, const BluetoothAudioStatus& status);
+
+  // The report function is used to report that the Bluetooth stack has notified
+  // the audio configuration changed, and will invoke
+  // audio_configuration_changed_cb_ to notify registered bluetooth_audio
+  // outputs
+  void ReportAudioConfigChanged(
+      const ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration&
+          audio_config);
+
   // The control function is for the bluetooth_audio module to get the current
   // AudioConfiguration
   const ::android::hardware::bluetooth::audio::V2_2::AudioConfiguration
@@ -82,6 +160,9 @@
   static constexpr ::android::hardware::bluetooth::audio::V2_2::
       AudioConfiguration& kInvalidOffloadAudioConfiguration =
           invalidOffloadAudioConfiguration;
+  static constexpr ::android::hardware::bluetooth::audio::V2_2::
+      AudioConfiguration& kInvalidLeOffloadAudioConfiguration =
+          invalidLeOffloadAudioConfiguration;
 };
 
 class BluetoothAudioSessionInstance_2_2 {
diff --git a/bluetooth/audio/utils/session/BluetoothAudioSupportedCodecsDB_2_2.cpp b/bluetooth/audio/utils/session/BluetoothAudioSupportedCodecsDB_2_2.cpp
index 5becdaa..4c99b0f 100644
--- a/bluetooth/audio/utils/session/BluetoothAudioSupportedCodecsDB_2_2.cpp
+++ b/bluetooth/audio/utils/session/BluetoothAudioSupportedCodecsDB_2_2.cpp
@@ -24,9 +24,63 @@
 namespace bluetooth {
 namespace audio {
 
+using ::android::hardware::bluetooth::audio::V2_0::BitsPerSample;
+using ::android::hardware::bluetooth::audio::V2_1::CodecType;
+using ::android::hardware::bluetooth::audio::V2_1::Lc3FrameDuration;
+using ::android::hardware::bluetooth::audio::V2_1::Lc3Parameters;
+using ::android::hardware::bluetooth::audio::V2_1::SampleRate;
+using ::android::hardware::bluetooth::audio::V2_2::AudioLocation;
+using ::android::hardware::bluetooth::audio::V2_2::BroadcastCapability;
+using ::android::hardware::bluetooth::audio::V2_2::
+    LeAudioCodecCapabilitiesSetting;
+using ::android::hardware::bluetooth::audio::V2_2::UnicastCapability;
 using SessionType_2_1 =
     ::android::hardware::bluetooth::audio::V2_1::SessionType;
 
+// Stores the list of offload supported capability
+std::vector<LeAudioCodecCapabilitiesSetting> kDefaultOffloadLeAudioCapabilities;
+
+static const UnicastCapability kInvalidUnicastCapability = {
+    .codecType = CodecType::UNKNOWN};
+
+static const BroadcastCapability kInvalidBroadcastCapability = {
+    .codecType = CodecType::UNKNOWN};
+
+// Default Supported Codecs
+// LC3 16_1: sample rate: 16 kHz, frame duration: 7.5 ms, octets per frame: 30
+static const Lc3Parameters kLc3Capability_16_1 = {
+    .samplingFrequency = SampleRate::RATE_16000,
+    .frameDuration = Lc3FrameDuration::DURATION_7500US,
+    .octetsPerFrame = 30};
+
+// Default Supported Codecs
+// LC3 16_2: sample rate: 16 kHz, frame duration: 10 ms, octets per frame: 40
+static const Lc3Parameters kLc3Capability_16_2 = {
+    .samplingFrequency = SampleRate::RATE_16000,
+    .frameDuration = Lc3FrameDuration::DURATION_10000US,
+    .octetsPerFrame = 40};
+
+// Default Supported Codecs
+// LC3 48_4: sample rate: 48 kHz, frame duration: 10 ms, octets per frame: 120
+static const Lc3Parameters kLc3Capability_48_4 = {
+    .samplingFrequency = SampleRate::RATE_48000,
+    .frameDuration = Lc3FrameDuration::DURATION_10000US,
+    .octetsPerFrame = 120};
+
+static const std::vector<Lc3Parameters> supportedLc3CapabilityList = {
+    kLc3Capability_48_4, kLc3Capability_16_2, kLc3Capability_16_1};
+
+static AudioLocation stereoAudio = static_cast<AudioLocation>(
+    AudioLocation::FRONT_LEFT | AudioLocation::FRONT_RIGHT);
+static AudioLocation monoAudio = AudioLocation::UNKNOWN;
+
+// Stores the supported setting of audio location, connected device, and the
+// channel count for each device
+std::vector<std::tuple<AudioLocation, uint8_t, uint8_t>>
+    supportedDeviceSetting = {std::make_tuple(stereoAudio, 2, 1),
+                              std::make_tuple(monoAudio, 1, 2),
+                              std::make_tuple(monoAudio, 1, 1)};
+
 bool IsOffloadLeAudioConfigurationValid(
     const ::android::hardware::bluetooth::audio::V2_1::SessionType&
         session_type,
@@ -44,6 +98,60 @@
   return true;
 }
 
+UnicastCapability composeUnicastLc3Capability(AudioLocation audioLocation,
+                                              uint8_t deviceCnt,
+                                              uint8_t channelCount,
+                                              Lc3Parameters capability) {
+  return UnicastCapability{.codecType = CodecType::LC3,
+                           .supportedChannel = audioLocation,
+                           .deviceCount = deviceCnt,
+                           .channelCountPerDevice = channelCount,
+                           .capabilities = capability};
+}
+
+std::vector<LeAudioCodecCapabilitiesSetting> GetLeAudioOffloadCodecCapabilities(
+    const SessionType_2_1& session_type) {
+  if (session_type !=
+          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_ENCODING_DATAPATH &&
+      session_type !=
+          SessionType_2_1::LE_AUDIO_HARDWARE_OFFLOAD_DECODING_DATAPATH) {
+    return std::vector<LeAudioCodecCapabilitiesSetting>(0);
+  }
+
+  if (kDefaultOffloadLeAudioCapabilities.empty()) {
+    for (auto [audioLocation, deviceCnt, channelCount] :
+         supportedDeviceSetting) {
+      for (auto capability : supportedLc3CapabilityList) {
+        UnicastCapability lc3Capability = composeUnicastLc3Capability(
+            audioLocation, deviceCnt, channelCount, capability);
+        UnicastCapability lc3MonoDecodeCapability =
+            composeUnicastLc3Capability(monoAudio, 1, 1, capability);
+
+        // Adds the capability for encode only
+        kDefaultOffloadLeAudioCapabilities.push_back(
+            {.unicastEncodeCapability = lc3Capability,
+             .unicastDecodeCapability = kInvalidUnicastCapability,
+             .broadcastCapability = kInvalidBroadcastCapability});
+
+        // Adds the capability for decode only
+        kDefaultOffloadLeAudioCapabilities.push_back(
+            {.unicastEncodeCapability = kInvalidUnicastCapability,
+             .unicastDecodeCapability = lc3Capability,
+             .broadcastCapability = kInvalidBroadcastCapability});
+
+        // Adds the capability for the case that encode and decode exist at the
+        // same time
+        kDefaultOffloadLeAudioCapabilities.push_back(
+            {.unicastEncodeCapability = lc3Capability,
+             .unicastDecodeCapability = lc3MonoDecodeCapability,
+             .broadcastCapability = kInvalidBroadcastCapability});
+      }
+    }
+  }
+
+  return kDefaultOffloadLeAudioCapabilities;
+}
+
 }  // namespace audio
 }  // namespace bluetooth
 }  // namespace android
diff --git a/bluetooth/audio/utils/session/BluetoothAudioSupportedCodecsDB_2_2.h b/bluetooth/audio/utils/session/BluetoothAudioSupportedCodecsDB_2_2.h
index 59d22b7..34bba5f 100644
--- a/bluetooth/audio/utils/session/BluetoothAudioSupportedCodecsDB_2_2.h
+++ b/bluetooth/audio/utils/session/BluetoothAudioSupportedCodecsDB_2_2.h
@@ -19,6 +19,7 @@
 #include <android/hardware/bluetooth/audio/2.2/types.h>
 
 #include "BluetoothAudioSupportedCodecsDB.h"
+#include "BluetoothAudioSupportedCodecsDB_2_1.h"
 
 namespace android {
 namespace bluetooth {
@@ -29,6 +30,11 @@
         session_type,
     const ::android::hardware::bluetooth::audio::V2_2::LeAudioConfiguration&
         le_audio_codec_config);
+
+std::vector<hardware::bluetooth::audio::V2_2::LeAudioCodecCapabilitiesSetting>
+GetLeAudioOffloadCodecCapabilities(
+    const ::android::hardware::bluetooth::audio::V2_1::SessionType&
+        session_type);
 }  // namespace audio
 }  // namespace bluetooth
 }  // namespace android
diff --git a/camera/common/1.0/default/HandleImporter.cpp b/camera/common/1.0/default/HandleImporter.cpp
index 7fcf523..fbe8686 100644
--- a/camera/common/1.0/default/HandleImporter.cpp
+++ b/camera/common/1.0/default/HandleImporter.cpp
@@ -30,6 +30,7 @@
 using aidl::android::hardware::graphics::common::PlaneLayout;
 using aidl::android::hardware::graphics::common::PlaneLayoutComponent;
 using aidl::android::hardware::graphics::common::PlaneLayoutComponentType;
+using MetadataType = android::hardware::graphics::mapper::V4_0::IMapper::MetadataType;
 using MapperErrorV2 = android::hardware::graphics::mapper::V2_0::Error;
 using MapperErrorV3 = android::hardware::graphics::mapper::V3_0::Error;
 using MapperErrorV4 = android::hardware::graphics::mapper::V4_0::Error;
@@ -123,6 +124,21 @@
     return layout;
 }
 
+bool isMetadataPesent(const sp<IMapperV4> mapper, const buffer_handle_t& buf,
+        MetadataType metadataType) {
+    auto buffer = const_cast<native_handle_t*>(buf);
+    mapper->get(buffer, metadataType, [] (const auto& tmpError,
+                const auto& tmpMetadata) {
+                    if (tmpError == MapperErrorV4::NONE) {
+                        return tmpMetadata.size() > 0;
+                    } else {
+                        ALOGE("%s: failed to get metadata %d!", __FUNCTION__, tmpError);
+                        return false;
+                    }});
+
+    return false;
+}
+
 std::vector<PlaneLayout> getPlaneLayouts(const sp<IMapperV4> mapper, buffer_handle_t& buf) {
     auto buffer = const_cast<native_handle_t*>(buf);
     std::vector<PlaneLayout> planeLayouts;
@@ -449,6 +465,55 @@
     return -1;
 }
 
+bool HandleImporter::isSmpte2086Present(const buffer_handle_t& buf) {
+    Mutex::Autolock lock(mLock);
+
+    if (!mInitialized) {
+        initializeLocked();
+    }
+
+    if (mMapperV4 != nullptr) {
+        return isMetadataPesent(mMapperV4, buf, gralloc4::MetadataType_Smpte2086);
+    } else {
+        ALOGE("%s: mMapperV4 is null! Query not supported!", __FUNCTION__);
+    }
+
+    return false;
+}
+
+bool HandleImporter::isSmpte2094_10Present(const buffer_handle_t& buf) {
+    Mutex::Autolock lock(mLock);
+
+    if (!mInitialized) {
+        initializeLocked();
+    }
+
+    if (mMapperV4 != nullptr) {
+        return isMetadataPesent(mMapperV4, buf, gralloc4::MetadataType_Smpte2094_10);
+    } else {
+        ALOGE("%s: mMapperV4 is null! Query not supported!", __FUNCTION__);
+    }
+
+    return false;
+}
+
+bool HandleImporter::isSmpte2094_40Present(const buffer_handle_t& buf) {
+    Mutex::Autolock lock(mLock);
+
+    if (!mInitialized) {
+        initializeLocked();
+    }
+
+    if (mMapperV4 != nullptr) {
+        return isMetadataPesent(mMapperV4, buf, gralloc4::MetadataType_Smpte2094_40);
+    } else {
+        ALOGE("%s: mMapperV4 is null! Query not supported!", __FUNCTION__);
+    }
+
+    return false;
+}
+
+
 } // namespace helper
 } // namespace V1_0
 } // namespace common
diff --git a/camera/common/1.0/default/include/HandleImporter.h b/camera/common/1.0/default/include/HandleImporter.h
index e404439..83fa755 100644
--- a/camera/common/1.0/default/include/HandleImporter.h
+++ b/camera/common/1.0/default/include/HandleImporter.h
@@ -61,6 +61,11 @@
 
     int unlock(buffer_handle_t& buf); // returns release fence
 
+    // Query Gralloc4 metadata
+    bool isSmpte2086Present(const buffer_handle_t& buf);
+    bool isSmpte2094_10Present(const buffer_handle_t& buf);
+    bool isSmpte2094_40Present(const buffer_handle_t& buf);
+
 private:
     void initializeLocked();
     void cleanup();
diff --git a/camera/device/3.8/Android.bp b/camera/device/3.8/Android.bp
index 2a1f215..c3c2941 100644
--- a/camera/device/3.8/Android.bp
+++ b/camera/device/3.8/Android.bp
@@ -9,7 +9,6 @@
     default_applicable_licenses: ["hardware_interfaces_license"],
 }
 
-
 hidl_interface {
     name: "android.hardware.camera.device@3.8",
     root: "android.hardware",
@@ -17,6 +16,7 @@
         "types.hal",
         "ICameraDevice.hal",
         "ICameraDeviceCallback.hal",
+        "ICameraDeviceSession.hal",
     ],
     interfaces: [
         "android.hardware.camera.common@1.0",
@@ -31,6 +31,7 @@
         "android.hardware.camera.metadata@3.4",
         "android.hardware.camera.metadata@3.5",
         "android.hardware.camera.metadata@3.6",
+        "android.hardware.camera.metadata@3.8",
         "android.hardware.graphics.common@1.0",
         "android.hidl.base@1.0",
     ],
diff --git a/camera/device/3.8/ICameraDevice.hal b/camera/device/3.8/ICameraDevice.hal
index 1101819..8832c68 100644
--- a/camera/device/3.8/ICameraDevice.hal
+++ b/camera/device/3.8/ICameraDevice.hal
@@ -26,8 +26,8 @@
  * API at LIMITED or better hardware level.
  *
  * ICameraDevice.open() must return @3.2::ICameraDeviceSession,
- * @3.5::ICameraDeviceSession, @3.6::ICameraDeviceSession, or
- * @3.7::ICameraDeviceSession.
+ * @3.5::ICameraDeviceSession, @3.6::ICameraDeviceSession,
+ * @3.7::ICameraDeviceSession, or @3.8::ICameraDeviceSession.
  */
 interface ICameraDevice extends @3.7::ICameraDevice {
     /**
@@ -107,4 +107,15 @@
      *
      */
     getTorchStrengthLevel() generates (Status status, int32_t torchStrength);
+
+     /**
+     * isStreamCombinationSupported_3_8:
+     *
+     * Identical to @3.7::ICameraDevice.isStreamCombinationSupported, except
+     * that it takes a @3.8::StreamConfiguration parameter, which could contain
+     * additional information about a specific 10-bit dynamic range profile.
+     *
+     */
+    isStreamCombinationSupported_3_8(StreamConfiguration streams)
+            generates (Status status, bool queryStatus);
 };
diff --git a/camera/device/3.8/ICameraDeviceSession.hal b/camera/device/3.8/ICameraDeviceSession.hal
new file mode 100644
index 0000000..88e4338
--- /dev/null
+++ b/camera/device/3.8/ICameraDeviceSession.hal
@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.camera.device@3.8;
+
+import android.hardware.camera.common@1.0::Status;
+import @3.5::StreamConfiguration;
+import @3.7::ICameraDeviceSession;
+import @3.6::HalStreamConfiguration;
+
+/**
+ * Camera device active session interface.
+ *
+ * Obtained via ICameraDevice::open(), this interface contains the methods to
+ * configure and request captures from an active camera device.
+ */
+interface ICameraDeviceSession extends @3.7::ICameraDeviceSession {
+    /**
+     * configureStreams_3_8:
+     *
+     * Identical to @3.7::ICameraDeviceSession.configureStreams_3_7, except that:
+     *
+     * - The requestedConfiguration allows the camera framework to configure
+     *   10-bit dynamic range profile.
+     *
+     * @return status Status code for the operation, one of:
+     *     OK:
+     *         On successful stream configuration.
+     *     INTERNAL_ERROR:
+     *         If there has been a fatal error and the device is no longer
+     *         operational. Only close() can be called successfully by the
+     *         framework after this error is returned.
+     *     ILLEGAL_ARGUMENT:
+     *         If the requested stream configuration is invalid. Some examples
+     *         of invalid stream configurations include:
+     *           - Including more than 1 INPUT stream
+     *           - Not including any OUTPUT streams
+     *           - Including streams with unsupported formats, or an unsupported
+     *             size for that format.
+     *           - Including too many output streams of a certain format.
+     *           - Unsupported rotation configuration
+     *           - Stream sizes/formats don't satisfy the
+     *             StreamConfigurationMode requirements
+     *             for non-NORMAL mode, or the requested operation_mode is not
+     *             supported by the HAL.
+     *           - Unsupported usage flag
+     *           - Unsupported stream groupIds, or unsupported multi-resolution
+     *             input stream.
+     *           - Invalid combination between a 10-bit dynamic range profile
+     *             and none impl. defined 8-bit format for a particular stream.
+     *         The camera service cannot filter out all possible illegal stream
+     *         configurations, since some devices may support more simultaneous
+     *         streams or larger stream resolutions than the minimum required
+     *         for a given camera device hardware level. The HAL must return an
+     *         ILLEGAL_ARGUMENT for any unsupported stream set, and then be
+     *         ready to accept a future valid stream configuration in a later
+     *         configureStreams call.
+     * @return halConfiguration The stream parameters desired by the HAL for
+     *     each stream, including maximum buffers, the usage flags, and the
+     *     override format and dataspace.
+     */
+    configureStreams_3_8(StreamConfiguration requestedConfiguration)
+        generates (Status status, @3.6::HalStreamConfiguration halConfiguration);
+
+    /**
+     * repeatingRequestEnd:
+     *
+     * Notification about the last frame number in a repeating request along with the
+     * ids of all streams included in the repeating request.
+     *
+     * This can be called at any point after 'processCaptureRequest' in response
+     * to camera clients disabling an active repeating request.
+     *
+     * Performance requirements:
+     * The call must not be blocked for extensive periods and should be extremely lightweight. There
+     * must be no frame rate degradation or frame jitter introduced.
+     *
+     * This method must always succeed, even if the device has encountered a
+     * serious error.
+     */
+    repeatingRequestEnd(uint32_t frameNumber, vec<int32_t> streamIds);
+};
diff --git a/camera/device/3.8/types.hal b/camera/device/3.8/types.hal
index 843d050..9d1ac22 100644
--- a/camera/device/3.8/types.hal
+++ b/camera/device/3.8/types.hal
@@ -19,6 +19,11 @@
 import @3.2::ErrorMsg;
 import @3.2::MsgType;
 import @3.2::ShutterMsg;
+import @3.2::CameraMetadata;
+import @3.2::StreamConfigurationMode;
+import @3.7::Stream;
+
+import android.hardware.camera.metadata@3.8::CameraMetadataEnumAndroidRequestAvailableDynamicRangeProfilesMap;
 
 /**
  * ShutterMsg:
@@ -67,3 +72,75 @@
         ShutterMsg shutter;
     } msg;
 };
+
+/**
+ * Stream:
+ *
+ * A descriptor for a single camera input or output stream. A stream is defined
+ * by the framework by its buffer resolution and format, and additionally by the
+ * HAL with the gralloc usage flags and the maximum in-flight buffer count.
+ *
+ * This version extends the @3.7 Stream with the dynamic range profile field.
+ */
+struct Stream {
+    /**
+     * The definition of Stream from the prior version.
+     */
+    @3.7::Stream v3_7;
+
+    /**
+     * The dynamic range profile for this stream.
+     *
+     * This field is valid and must only be considered for streams with format
+     * android.hardware.graphics.common.PixelFormat.YCBCR_P010 or
+     * android.hardware.graphics.common.PixelFormat.IMPLEMENTATION_DEFINED on devices supporting the
+     * ANDROID_REQUEST_AVAILABLE_CAPABILITIES_DYNAMIC_RANGE_10_BIT capability.
+     *
+     */
+    CameraMetadataEnumAndroidRequestAvailableDynamicRangeProfilesMap dynamicRangeProfile;
+};
+
+/**
+ * StreamConfiguration:
+ *
+ * Identical to @3.7::StreamConfiguration, except that the streams
+ * vector contains @3.8::Stream.
+ */
+struct StreamConfiguration {
+    /**
+     * An array of camera stream pointers, defining the input/output
+     * configuration for the camera HAL device.
+     */
+    vec<Stream> streams;
+
+    /**
+     * The definition of operation mode from prior version.
+     *
+     */
+    @3.2::StreamConfigurationMode operationMode;
+
+    /**
+     * The definition of session parameters from prior version.
+     */
+    @3.2::CameraMetadata sessionParams;
+
+    /**
+     * The definition of stream configuration counter from prior version.
+     */
+    uint32_t streamConfigCounter;
+
+    /**
+     * If an input stream is configured, whether the input stream is expected to
+     * receive variable resolution images.
+     *
+     * This flag can only be set to true if the camera device supports
+     * multi-resolution input streams by advertising input stream configurations in
+     * physicalCameraMultiResolutionStreamConfigurations in its physical cameras'
+     * characteristics.
+     *
+     * When this flag is set to true, the input stream's width and height can be
+     * any one of the supported multi-resolution input stream sizes.
+     */
+    bool multiResolutionInputImage;
+};
+
diff --git a/camera/metadata/3.8/types.hal b/camera/metadata/3.8/types.hal
index 11360da..4c70eb9 100644
--- a/camera/metadata/3.8/types.hal
+++ b/camera/metadata/3.8/types.hal
@@ -53,6 +53,21 @@
 
     ANDROID_FLASH_INFO_END_3_8,
 
+    /** android.request.availableDynamicRangeProfilesMap [static, enum[], ndk_public]
+     *
+     * <p>A map of all available 10-bit dynamic range profiles along with their
+     * capture request constraints.</p>
+     */
+    ANDROID_REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES_MAP = android.hardware.camera.metadata@3.4::CameraMetadataTag:ANDROID_REQUEST_END_3_4,
+
+    /** android.request.recommendedTenBitDynamicRangeProfile [static, int32, java_public]
+     *
+     * <p>Recommended 10-bit dynamic range profile.</p>
+     */
+    ANDROID_REQUEST_RECOMMENDED_TEN_BIT_DYNAMIC_RANGE_PROFILE,
+
+    ANDROID_REQUEST_END_3_8,
+
 };
 
 /*
@@ -66,3 +81,51 @@
         @3.2::CameraMetadataEnumAndroidControlVideoStabilizationMode {
     ANDROID_CONTROL_VIDEO_STABILIZATION_MODE_PREVIEW_STABILIZATION,
 };
+
+/** android.request.availableCapabilities enumeration values added since v3.6
+ * @see ANDROID_REQUEST_AVAILABLE_CAPABILITIES
+ */
+enum CameraMetadataEnumAndroidRequestAvailableCapabilities :
+        @3.6::CameraMetadataEnumAndroidRequestAvailableCapabilities {
+    ANDROID_REQUEST_AVAILABLE_CAPABILITIES_DYNAMIC_RANGE_TEN_BIT,
+};
+
+/** android.request.availableDynamicRangeProfilesMap enumeration values
+ * @see ANDROID_REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES_MAP
+ */
+enum CameraMetadataEnumAndroidRequestAvailableDynamicRangeProfilesMap : uint32_t {
+    ANDROID_REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES_MAP_STANDARD
+                                                                 = 0x1,
+    ANDROID_REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES_MAP_HLG10  = 0x2,
+    ANDROID_REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES_MAP_HDR10  = 0x4,
+    ANDROID_REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES_MAP_HDR10_PLUS
+                                                                 = 0x8,
+    ANDROID_REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES_MAP_DOLBY_VISION_10B_HDR_REF
+                                                                 = 0x10,
+    ANDROID_REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES_MAP_DOLBY_VISION_10B_HDR_REF_PO
+                                                                 = 0x20,
+    ANDROID_REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES_MAP_DOLBY_VISION_10B_HDR_OEM
+                                                                 = 0x40,
+    ANDROID_REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES_MAP_DOLBY_VISION_10B_HDR_OEM_PO
+                                                                 = 0x80,
+    ANDROID_REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES_MAP_DOLBY_VISION_8B_HDR_REF
+                                                                 = 0x100,
+    ANDROID_REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES_MAP_DOLBY_VISION_8B_HDR_REF_PO
+                                                                 = 0x200,
+    ANDROID_REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES_MAP_DOLBY_VISION_8B_HDR_OEM
+                                                                 = 0x400,
+    ANDROID_REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES_MAP_DOLBY_VISION_8B_HDR_OEM_PO
+                                                                 = 0x800,
+    ANDROID_REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES_MAP_MAX    = 0x1000,
+};
+
+/** android.scaler.availableRecommendedStreamConfigurations enumeration values added since v3.4
+ * @see ANDROID_SCALER_AVAILABLE_RECOMMENDED_STREAM_CONFIGURATIONS
+ */
+enum CameraMetadataEnumAndroidScalerAvailableRecommendedStreamConfigurations :
+        @3.4::CameraMetadataEnumAndroidScalerAvailableRecommendedStreamConfigurations {
+    ANDROID_SCALER_AVAILABLE_RECOMMENDED_STREAM_CONFIGURATIONS_10BIT_OUTPUT
+                                                                 = 0x8,
+    ANDROID_SCALER_AVAILABLE_RECOMMENDED_STREAM_CONFIGURATIONS_PUBLIC_END_3_8
+                                                                 = 0x9,
+};
diff --git a/camera/provider/2.4/vts/functional/Android.bp b/camera/provider/2.4/vts/functional/Android.bp
index 2c141ee..0e62265 100644
--- a/camera/provider/2.4/vts/functional/Android.bp
+++ b/camera/provider/2.4/vts/functional/Android.bp
@@ -51,11 +51,15 @@
         "android.hardware.camera.device@3.7",
         "android.hardware.camera.device@3.8",
         "android.hardware.camera.metadata@3.4",
+        "android.hardware.camera.metadata@3.8",
         "android.hardware.camera.provider@2.4",
         "android.hardware.camera.provider@2.5",
         "android.hardware.camera.provider@2.6",
         "android.hardware.camera.provider@2.7",
         "android.hardware.graphics.common@1.0",
+        "android.hardware.graphics.mapper@2.0",
+        "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
         "android.hidl.allocator@1.0",
         "libgrallocusage",
         "libhidlmemory",
diff --git a/camera/provider/2.4/vts/functional/VtsHalCameraProviderV2_4TargetTest.cpp b/camera/provider/2.4/vts/functional/VtsHalCameraProviderV2_4TargetTest.cpp
index 01ec9cb..8c44010 100644
--- a/camera/provider/2.4/vts/functional/VtsHalCameraProviderV2_4TargetTest.cpp
+++ b/camera/provider/2.4/vts/functional/VtsHalCameraProviderV2_4TargetTest.cpp
@@ -30,6 +30,7 @@
 
 #include <CameraMetadata.h>
 #include <CameraParameters.h>
+#include <HandleImporter.h>
 #include <android/hardware/camera/device/1.0/ICameraDevice.h>
 #include <android/hardware/camera/device/3.2/ICameraDevice.h>
 #include <android/hardware/camera/device/3.3/ICameraDeviceSession.h>
@@ -45,7 +46,9 @@
 #include <android/hardware/camera/device/3.7/ICameraDeviceSession.h>
 #include <android/hardware/camera/device/3.7/ICameraInjectionSession.h>
 #include <android/hardware/camera/device/3.8/ICameraDeviceCallback.h>
+#include <android/hardware/camera/device/3.8/ICameraDeviceSession.h>
 #include <android/hardware/camera/metadata/3.4/types.h>
+#include <android/hardware/camera/metadata/3.8/types.h>
 #include <android/hardware/camera/provider/2.4/ICameraProvider.h>
 #include <android/hardware/camera/provider/2.5/ICameraProvider.h>
 #include <android/hardware/camera/provider/2.6/ICameraProvider.h>
@@ -97,6 +100,7 @@
 using ::android::hardware::camera::common::V1_0::TorchMode;
 using ::android::hardware::camera::common::V1_0::TorchModeStatus;
 using ::android::hardware::camera::common::V1_0::helper::CameraParameters;
+using ::android::hardware::camera::common::V1_0::helper::HandleImporter;
 using ::android::hardware::camera::common::V1_0::helper::Size;
 using ::android::hardware::camera::device::V1_0::CameraFacing;
 using ::android::hardware::camera::device::V1_0::CameraFrameMetadata;
@@ -129,6 +133,8 @@
         CameraMetadataEnumAndroidSensorInfoColorFilterArrangement;
 using ::android::hardware::camera::metadata::V3_4::CameraMetadataTag;
 using ::android::hardware::camera::metadata::V3_6::CameraMetadataEnumAndroidSensorPixelMode;
+using ::android::hardware::camera::metadata::V3_8::
+        CameraMetadataEnumAndroidRequestAvailableDynamicRangeProfilesMap;
 using ::android::hardware::camera::provider::V2_4::ICameraProvider;
 using ::android::hardware::camera::provider::V2_4::ICameraProviderCallback;
 using ::android::hardware::camera::provider::V2_6::CameraIdAndStreamCombination;
@@ -136,7 +142,6 @@
 using ::android::hardware::graphics::common::V1_0::Dataspace;
 using ::android::hardware::graphics::common::V1_0::PixelFormat;
 using ::android::hidl::allocator::V1_0::IAllocator;
-using ::android::hidl::memory::V1_0::IMapper;
 using ::android::hidl::memory::V1_0::IMemory;
 using ResultMetadataQueue = MessageQueue<uint8_t, kSynchronizedReadWrite>;
 using ::android::hidl::manager::V1_0::IServiceManager;
@@ -667,7 +672,7 @@
 
         void waitForBuffersReturned();
 
-     private:
+      private:
         bool processCaptureResultLocked(const CaptureResult& results,
                 hidl_vec<PhysicalCameraMetadata> physicalCameraMetadata);
         Return<void> notifyHelper(const hidl_vec<NotifyMsg>& msgs,
@@ -781,13 +786,15 @@
             sp<device::V3_4::ICameraDeviceSession> *session3_4 /*out*/,
             sp<device::V3_5::ICameraDeviceSession> *session3_5 /*out*/,
             sp<device::V3_6::ICameraDeviceSession> *session3_6 /*out*/,
-            sp<device::V3_7::ICameraDeviceSession> *session3_7 /*out*/);
+            sp<device::V3_7::ICameraDeviceSession> *session3_7 /*out*/,
+            sp<device::V3_8::ICameraDeviceSession> *session3_8 /*out*/);
     void castInjectionSession(
             const sp<ICameraDeviceSession>& session,
             sp<device::V3_7::ICameraInjectionSession>* injectionSession3_7 /*out*/);
     void castDevice(const sp<device::V3_2::ICameraDevice>& device, int32_t deviceVersion,
                     sp<device::V3_5::ICameraDevice>* device3_5 /*out*/,
-                    sp<device::V3_7::ICameraDevice>* device3_7 /*out*/);
+                    sp<device::V3_7::ICameraDevice>* device3_7 /*out*/,
+                    sp<device::V3_8::ICameraDevice>* device3_8 /*out*/);
     void createStreamConfiguration(
             const ::android::hardware::hidl_vec<V3_2::Stream>& streams3_2,
             StreamConfigurationMode configMode,
@@ -817,6 +824,16 @@
                              uint32_t* partialResultCount /*out*/, bool* useHalBufManager /*out*/,
                              sp<DeviceCb>* outCb /*out*/, uint32_t streamConfigCounter,
                              bool maxResolution);
+    void configureStreams3_8(const std::string& name, int32_t deviceVersion,
+                             sp<ICameraProvider> provider, PixelFormat format,
+                             sp<device::V3_8::ICameraDeviceSession>* session3_8 /*out*/,
+                             V3_2::Stream* previewStream /*out*/,
+                             device::V3_6::HalStreamConfiguration* halStreamConfig /*out*/,
+                             bool* supportsPartialResults /*out*/,
+                             uint32_t* partialResultCount /*out*/, bool* useHalBufManager /*out*/,
+                             sp<DeviceCb>* outCb /*out*/, uint32_t streamConfigCounter,
+                             bool maxResolution,
+                             CameraMetadataEnumAndroidRequestAvailableDynamicRangeProfilesMap prof);
 
     void configurePreviewStreams3_4(const std::string &name, int32_t deviceVersion,
             sp<ICameraProvider> provider,
@@ -896,6 +913,9 @@
     static bool isDepthOnly(const camera_metadata_t* staticMeta);
 
     static bool isUltraHighResolution(const camera_metadata_t* staticMeta);
+    static void get10BitDynamicRangeProfiles(const camera_metadata_t* staticMeta,
+        std::vector<CameraMetadataEnumAndroidRequestAvailableDynamicRangeProfilesMap> *profiles);
+    static bool is10BitDynamicRangeCapable(const camera_metadata_t* staticMeta);
 
     static Status getAvailableOutputStreams(const camera_metadata_t* staticMeta,
                                             std::vector<AvailableStream>& outputStreams,
@@ -907,7 +927,7 @@
 
     static Status getMandatoryConcurrentStreams(const camera_metadata_t* staticMeta,
                                                 std::vector<AvailableStream>* outputStreams);
-
+    static bool supportsPreviewStabilization(const std::string& name, sp<ICameraProvider> provider);
     static Status getJpegBufferSize(camera_metadata_t *staticMeta,
             uint32_t* outBufSize);
     static Status isConstrainedModeAvailable(camera_metadata_t *staticMeta);
@@ -949,12 +969,14 @@
     void getPrivacyTestPatternModes(
             const camera_metadata_t* staticMetadata,
             std::unordered_set<int32_t>* privacyTestPatternModes/*out*/);
-    static bool isColorCamera(const camera_metadata_t *metadata);
 
     static V3_2::DataspaceFlags getDataspace(PixelFormat format);
 
     void processCaptureRequestInternal(uint64_t bufferusage, RequestTemplate reqTemplate,
                                        bool useSecureOnlyCameras);
+    void processPreviewStabilizationCaptureRequestInternal(
+            bool previewStabilizationOn,
+            /*inout*/ std::unordered_map<std::string, nsecs_t>& cameraDeviceToTimeLag);
 
     // Used by switchToOffline where a new result queue is created for offline reqs
     void updateInflightResultQueue(std::shared_ptr<ResultMetadataQueue> resultQueue);
@@ -1008,7 +1030,11 @@
 
         // Buffers are added by process_capture_result when output buffers
         // return from HAL but framework.
-        ::android::Vector<StreamBuffer> resultOutputBuffers;
+        struct StreamBufferAndTimestamp {
+            StreamBuffer buffer;
+            nsecs_t timeStamp;
+        };
+        ::android::Vector<StreamBufferAndTimestamp> resultOutputBuffers;
 
         std::unordered_set<std::string> expectedPhysicalResults;
 
@@ -1070,6 +1096,10 @@
                 expectedPhysicalResults(extraPhysicalResult) {}
     };
 
+    static void verify10BitMetadata(HandleImporter& importer,
+            const InFlightRequest& request,
+            CameraMetadataEnumAndroidRequestAvailableDynamicRangeProfilesMap profile);
+
     // Map from frame number to the in-flight request state
     typedef ::android::KeyedVector<uint32_t, InFlightRequest*> InFlightMap;
 
@@ -1098,6 +1128,8 @@
 
     // Camera provider type.
     std::string mProviderType;
+
+    HandleImporter mHandleImporter;
 };
 
 Return<void> CameraHidlTest::Camera1DeviceCb::notifyCallback(
@@ -1423,8 +1455,25 @@
         return notify;
     }
 
-    request->resultOutputBuffers.appendArray(results.outputBuffers.data(),
-            results.outputBuffers.size());
+    for (const auto& buffer : results.outputBuffers) {
+        // wait for the fence timestamp and store it along with the buffer
+        // TODO: Check if we really need the dup here
+        sp<android::Fence> releaseFence = nullptr;
+        if (buffer.releaseFence && (buffer.releaseFence->numFds == 1) &&
+            buffer.releaseFence->data[0] >= 0) {
+            releaseFence = new android::Fence(dup(buffer.releaseFence->data[0]));
+        }
+        InFlightRequest::StreamBufferAndTimestamp streamBufferAndTimestamp;
+        streamBufferAndTimestamp.buffer = buffer;
+        streamBufferAndTimestamp.timeStamp = systemTime();
+        if (releaseFence && releaseFence->isValid()) {
+            releaseFence->wait(/*ms*/ 300);
+            nsecs_t releaseTime = releaseFence->getSignalTime();
+            if (streamBufferAndTimestamp.timeStamp < releaseTime)
+                streamBufferAndTimestamp.timeStamp = releaseTime;
+        }
+        request->resultOutputBuffers.push_back(streamBufferAndTimestamp);
+    }
     // If shutter event is received notify the pending threads.
     if (request->shutterTimestamp != 0) {
         notify = true;
@@ -3318,10 +3367,13 @@
                 sp<device::V3_5::ICameraDeviceSession> sessionV3_5;
                 sp<device::V3_6::ICameraDeviceSession> sessionV3_6;
                 sp<device::V3_7::ICameraDeviceSession> sessionV3_7;
+                sp<device::V3_8::ICameraDeviceSession> sessionV3_8;
                 castSession(session, deviceVersion, &sessionV3_3,
                         &sessionV3_4, &sessionV3_5, &sessionV3_6,
-                        &sessionV3_7);
-                if (deviceVersion >= CAMERA_DEVICE_API_VERSION_3_7) {
+                        &sessionV3_7, &sessionV3_8);
+                if (deviceVersion == CAMERA_DEVICE_API_VERSION_3_8) {
+                    ASSERT_TRUE(sessionV3_8.get() != nullptr);
+                } else if (deviceVersion == CAMERA_DEVICE_API_VERSION_3_7) {
                     ASSERT_TRUE(sessionV3_7.get() != nullptr);
                 } else if (deviceVersion == CAMERA_DEVICE_API_VERSION_3_6) {
                     ASSERT_TRUE(sessionV3_6.get() != nullptr);
@@ -3489,14 +3541,17 @@
         sp<device::V3_5::ICameraDeviceSession> session3_5;
         sp<device::V3_6::ICameraDeviceSession> session3_6;
         sp<device::V3_7::ICameraDeviceSession> session3_7;
+        sp<device::V3_8::ICameraDeviceSession> session3_8;
         sp<device::V3_2::ICameraDevice> cameraDevice;
         sp<device::V3_5::ICameraDevice> cameraDevice3_5;
         sp<device::V3_7::ICameraDevice> cameraDevice3_7;
+        sp<device::V3_8::ICameraDevice> cameraDevice3_8;
         openEmptyDeviceSession(name, mProvider,
                 &session /*out*/, &staticMeta /*out*/, &cameraDevice /*out*/);
         castSession(session, deviceVersion, &session3_3, &session3_4, &session3_5,
-                &session3_6, &session3_7);
-        castDevice(cameraDevice, deviceVersion, &cameraDevice3_5, &cameraDevice3_7);
+                &session3_6, &session3_7, &session3_8);
+        castDevice(cameraDevice, deviceVersion, &cameraDevice3_5, &cameraDevice3_7,
+                &cameraDevice3_8);
 
         outputStreams.clear();
         ASSERT_EQ(Status::OK, getAvailableOutputStreams(staticMeta, outputStreams));
@@ -3592,9 +3647,11 @@
         sp<device::V3_5::ICameraDeviceSession> session3_5;
         sp<device::V3_6::ICameraDeviceSession> session3_6;
         sp<device::V3_7::ICameraDeviceSession> session3_7;
+        sp<device::V3_8::ICameraDeviceSession> session3_8;
         sp<device::V3_2::ICameraDevice> cameraDevice;
         sp<device::V3_5::ICameraDevice> cameraDevice3_5;
         sp<device::V3_7::ICameraDevice> cameraDevice3_7;
+        sp<device::V3_8::ICameraDevice> cameraDevice3_8;
         ::android::hardware::camera::device::V3_7::StreamConfiguration config3_7;
         ::android::hardware::camera::device::V3_5::StreamConfiguration config3_5;
         ::android::hardware::camera::device::V3_4::StreamConfiguration config3_4;
@@ -3631,8 +3688,9 @@
             openEmptyDeviceSession(name, mProvider2_6, &cti.session /*out*/,
                                    &cti.staticMeta /*out*/, &cti.cameraDevice /*out*/);
             castSession(cti.session, deviceVersion, &cti.session3_3, &cti.session3_4,
-                        &cti.session3_5, &cti.session3_6, &cti.session3_7);
-            castDevice(cti.cameraDevice, deviceVersion, &cti.cameraDevice3_5, &cti.cameraDevice3_7);
+                        &cti.session3_5, &cti.session3_6, &cti.session3_7, &cti.session3_8);
+            castDevice(cti.cameraDevice, deviceVersion, &cti.cameraDevice3_5, &cti.cameraDevice3_7,
+                    &cti.cameraDevice3_8);
 
             outputStreams.clear();
             ASSERT_EQ(Status::OK, getMandatoryConcurrentStreams(cti.staticMeta, &outputStreams));
@@ -3761,14 +3819,17 @@
         sp<device::V3_5::ICameraDeviceSession> session3_5;
         sp<device::V3_6::ICameraDeviceSession> session3_6;
         sp<device::V3_7::ICameraDeviceSession> session3_7;
+        sp<device::V3_8::ICameraDeviceSession> session3_8;
         sp<device::V3_2::ICameraDevice> cameraDevice;
         sp<device::V3_5::ICameraDevice> cameraDevice3_5;
         sp<device::V3_7::ICameraDevice> cameraDevice3_7;
+        sp<device::V3_8::ICameraDevice> cameraDevice3_8;
         openEmptyDeviceSession(name, mProvider, &session /*out*/, &staticMeta /*out*/,
                 &cameraDevice /*out*/);
         castSession(session, deviceVersion, &session3_3, &session3_4, &session3_5,
-                &session3_6, &session3_7);
-        castDevice(cameraDevice, deviceVersion, &cameraDevice3_5, &cameraDevice3_7);
+                &session3_6, &session3_7, &session3_8);
+        castDevice(cameraDevice, deviceVersion, &cameraDevice3_5, &cameraDevice3_7,
+                &cameraDevice3_8);
 
         outputStreams.clear();
         ASSERT_EQ(Status::OK, getAvailableOutputStreams(staticMeta, outputStreams));
@@ -3974,14 +4035,17 @@
         sp<device::V3_5::ICameraDeviceSession> session3_5;
         sp<device::V3_6::ICameraDeviceSession> session3_6;
         sp<device::V3_7::ICameraDeviceSession> session3_7;
+        sp<device::V3_8::ICameraDeviceSession> session3_8;
         sp<device::V3_2::ICameraDevice> cameraDevice;
         sp<device::V3_5::ICameraDevice> cameraDevice3_5;
         sp<device::V3_7::ICameraDevice> cameraDevice3_7;
+        sp<device::V3_8::ICameraDevice> cameraDevice3_8;
         openEmptyDeviceSession(name, mProvider, &session /*out*/, &staticMeta /*out*/,
                 &cameraDevice /*out*/);
         castSession(session, deviceVersion, &session3_3, &session3_4, &session3_5,
-                &session3_6, &session3_7);
-        castDevice(cameraDevice, deviceVersion, &cameraDevice3_5, &cameraDevice3_7);
+                &session3_6, &session3_7, &session3_8);
+        castDevice(cameraDevice, deviceVersion, &cameraDevice3_5, &cameraDevice3_7,
+                &cameraDevice3_8);
 
         Status rc = isZSLModeAvailable(staticMeta);
         if (Status::METHOD_NOT_SUPPORTED == rc) {
@@ -4160,9 +4224,10 @@
         sp<device::V3_5::ICameraDeviceSession> session3_5;
         sp<device::V3_6::ICameraDeviceSession> session3_6;
         sp<device::V3_7::ICameraDeviceSession> session3_7;
+        sp<device::V3_8::ICameraDeviceSession> session3_8;
         openEmptyDeviceSession(name, mProvider, &session /*out*/, &staticMetaBuffer /*out*/);
         castSession(session, deviceVersion, &session3_3, &session3_4, &session3_5,
-                &session3_6, &session3_7);
+                &session3_6, &session3_7, &session3_8);
         if (deviceVersion == CAMERA_DEVICE_API_VERSION_3_4) {
             ASSERT_NE(session3_4, nullptr);
         } else {
@@ -4301,14 +4366,17 @@
         sp<device::V3_5::ICameraDeviceSession> session3_5;
         sp<device::V3_6::ICameraDeviceSession> session3_6;
         sp<device::V3_7::ICameraDeviceSession> session3_7;
+        sp<device::V3_8::ICameraDeviceSession> session3_8;
         sp<device::V3_2::ICameraDevice> cameraDevice;
         sp<device::V3_5::ICameraDevice> cameraDevice3_5;
         sp<device::V3_7::ICameraDevice> cameraDevice3_7;
+        sp<device::V3_8::ICameraDevice> cameraDevice3_8;
         openEmptyDeviceSession(name, mProvider, &session /*out*/, &staticMeta /*out*/,
                 &cameraDevice /*out*/);
         castSession(session, deviceVersion, &session3_3, &session3_4, &session3_5,
-                &session3_6, &session3_7);
-        castDevice(cameraDevice, deviceVersion, &cameraDevice3_5, &cameraDevice3_7);
+                &session3_6, &session3_7, &session3_8);
+        castDevice(cameraDevice, deviceVersion, &cameraDevice3_5, &cameraDevice3_7,
+                &cameraDevice3_8);
 
         // Check if camera support depth only
         if (isDepthOnly(staticMeta)) {
@@ -4435,14 +4503,17 @@
         sp<device::V3_5::ICameraDeviceSession> session3_5;
         sp<device::V3_6::ICameraDeviceSession> session3_6;
         sp<device::V3_7::ICameraDeviceSession> session3_7;
+        sp<device::V3_8::ICameraDeviceSession> session3_8;
         sp<device::V3_2::ICameraDevice> cameraDevice;
         sp<device::V3_5::ICameraDevice> cameraDevice3_5;
         sp<device::V3_7::ICameraDevice> cameraDevice3_7;
+        sp<device::V3_8::ICameraDevice> cameraDevice3_8;
         openEmptyDeviceSession(name, mProvider, &session /*out*/, &staticMeta /*out*/,
                 &cameraDevice /*out*/);
         castSession(session, deviceVersion, &session3_3, &session3_4, &session3_5,
-                &session3_6, &session3_7);
-        castDevice(cameraDevice, deviceVersion, &cameraDevice3_5, &cameraDevice3_7);
+                &session3_6, &session3_7, &session3_8);
+        castDevice(cameraDevice, deviceVersion, &cameraDevice3_5, &cameraDevice3_7,
+                &cameraDevice3_8);
 
         Status rc = isConstrainedModeAvailable(staticMeta);
         if (Status::METHOD_NOT_SUPPORTED == rc) {
@@ -4682,14 +4753,17 @@
         sp<device::V3_5::ICameraDeviceSession> session3_5;
         sp<device::V3_6::ICameraDeviceSession> session3_6;
         sp<device::V3_7::ICameraDeviceSession> session3_7;
+        sp<device::V3_8::ICameraDeviceSession> session3_8;
         sp<device::V3_2::ICameraDevice> cameraDevice;
         sp<device::V3_5::ICameraDevice> cameraDevice3_5;
         sp<device::V3_7::ICameraDevice> cameraDevice3_7;
+        sp<device::V3_8::ICameraDevice> cameraDevice3_8;
         openEmptyDeviceSession(name, mProvider, &session /*out*/, &staticMeta /*out*/,
                 &cameraDevice /*out*/);
         castSession(session, deviceVersion, &session3_3, &session3_4, &session3_5,
-                &session3_6, &session3_7);
-        castDevice(cameraDevice, deviceVersion, &cameraDevice3_5, &cameraDevice3_7);
+                &session3_6, &session3_7, &session3_8);
+        castDevice(cameraDevice, deviceVersion, &cameraDevice3_5, &cameraDevice3_7,
+                &cameraDevice3_8);
 
         // Check if camera support depth only
         if (isDepthOnly(staticMeta)) {
@@ -4926,7 +5000,7 @@
 
             ASSERT_FALSE(inflightReq.errorCodeValid);
             ASSERT_NE(inflightReq.resultOutputBuffers.size(), 0u);
-            ASSERT_EQ(testStream.id, inflightReq.resultOutputBuffers[0].streamId);
+            ASSERT_EQ(testStream.id, inflightReq.resultOutputBuffers[0].buffer.streamId);
 
             // For camera device 3.8 or newer, shutterReadoutTimestamp must be
             // available, and it must be >= shutterTimestamp + exposureTime, and
@@ -4973,6 +5047,20 @@
         ASSERT_EQ(Status::OK, status);
         ASSERT_EQ(numRequestProcessed, 1u);
 
+        if (deviceVersion >= CAMERA_DEVICE_API_VERSION_3_8) {
+            sp<device::V3_3::ICameraDeviceSession> session3_3;
+            sp<device::V3_4::ICameraDeviceSession> session3_4;
+            sp<device::V3_5::ICameraDeviceSession> session3_5;
+            sp<device::V3_6::ICameraDeviceSession> session3_6;
+            sp<device::V3_7::ICameraDeviceSession> session3_7;
+            sp<device::V3_8::ICameraDeviceSession> session3_8;
+            castSession(session, deviceVersion, &session3_3, &session3_4, &session3_5,
+                    &session3_6, &session3_7, &session3_8);
+            ASSERT_TRUE(session3_8.get() != nullptr);
+            hidl_vec<int32_t> streamIds = { halStreamConfig.streams[0].id };
+            session3_8->repeatingRequestEnd(request.frameNumber, streamIds);
+        }
+
         {
             std::unique_lock<std::mutex> l(mLock);
             while (!inflightReq.errorCodeValid &&
@@ -4986,7 +5074,197 @@
 
             ASSERT_FALSE(inflightReq.errorCodeValid);
             ASSERT_NE(inflightReq.resultOutputBuffers.size(), 0u);
-            ASSERT_EQ(testStream.id, inflightReq.resultOutputBuffers[0].streamId);
+            ASSERT_EQ(testStream.id, inflightReq.resultOutputBuffers[0].buffer.streamId);
+        }
+
+        if (useHalBufManager) {
+            verifyBuffersReturned(session, deviceVersion, testStream.id, cb);
+        }
+
+        ret = session->close();
+        ASSERT_TRUE(ret.isOk());
+    }
+}
+
+TEST_P(CameraHidlTest, processCaptureRequestPreviewStabilization) {
+    std::unordered_map<std::string, nsecs_t> cameraDeviceToTimeLag;
+    processPreviewStabilizationCaptureRequestInternal(/*previewStabilizationOn*/ false,
+                                                      cameraDeviceToTimeLag);
+    processPreviewStabilizationCaptureRequestInternal(/*previewStabilizationOn*/ true,
+                                                      cameraDeviceToTimeLag);
+}
+
+void CameraHidlTest::processPreviewStabilizationCaptureRequestInternal(
+        bool previewStabilizationOn,
+        // Used as output when preview stabilization is off, as output when its
+        // on.
+        std::unordered_map<std::string, nsecs_t>& cameraDeviceToTimeLag) {
+    hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
+    AvailableStream streamThreshold = {kMaxPreviewWidth, kMaxPreviewHeight,
+                                       static_cast<int32_t>(PixelFormat::IMPLEMENTATION_DEFINED)};
+    uint64_t bufferId = 1;
+    uint32_t frameNumber = 1;
+    ::android::hardware::hidl_vec<uint8_t> settings;
+
+    for (const auto& name : cameraDeviceNames) {
+        int deviceVersion = getCameraDeviceVersion(name, mProviderType);
+        if (deviceVersion == CAMERA_DEVICE_API_VERSION_1_0) {
+            continue;
+        } else if (deviceVersion <= 0) {
+            ALOGE("%s: Unsupported device version %d", __func__, deviceVersion);
+            ADD_FAILURE();
+            return;
+        }
+
+        if (!supportsPreviewStabilization(name, mProvider)) {
+            ALOGI(" %s Camera device %s doesn't support preview stabilization, skipping", __func__,
+                  name.c_str());
+            continue;
+        }
+
+        if (deviceVersion < CAMERA_DEVICE_API_VERSION_3_8) {
+            ALOGE("%s: device version < 3.8 must not advertise preview stabilization,"
+                  " camera metadata validation will fail",
+                  __func__);
+            ADD_FAILURE();
+        }
+
+        V3_2::Stream testStream;
+        HalStreamConfiguration halStreamConfig;
+        sp<ICameraDeviceSession> session;
+        sp<DeviceCb> cb;
+        bool supportsPartialResults = false;
+        bool useHalBufManager = false;
+        uint32_t partialResultCount = 0;
+        configureSingleStream(name, deviceVersion, mProvider, &streamThreshold,
+                              GRALLOC1_CONSUMER_USAGE_HWCOMPOSER, RequestTemplate::PREVIEW,
+                              &session /*out*/, &testStream /*out*/, &halStreamConfig /*out*/,
+                              &supportsPartialResults /*out*/, &partialResultCount /*out*/,
+                              &useHalBufManager /*out*/, &cb /*out*/);
+
+        std::shared_ptr<ResultMetadataQueue> resultQueue;
+        auto resultQueueRet =
+                session->getCaptureResultMetadataQueue([&resultQueue](const auto& descriptor) {
+                    resultQueue = std::make_shared<ResultMetadataQueue>(descriptor);
+                    if (!resultQueue->isValid() || resultQueue->availableToWrite() <= 0) {
+                        ALOGE("%s: HAL returns empty result metadata fmq,"
+                              " not use it",
+                              __func__);
+                        resultQueue = nullptr;
+                        // Don't use the queue onwards.
+                    }
+                });
+        ASSERT_TRUE(resultQueueRet.isOk());
+
+        InFlightRequest inflightReq = {1, false, supportsPartialResults, partialResultCount,
+                                       resultQueue};
+
+        Return<void> ret;
+        android::hardware::camera::common::V1_0::helper::CameraMetadata defaultSettings;
+        ret = session->constructDefaultRequestSettings(
+                RequestTemplate::PREVIEW, [&](auto status, const auto& req) {
+                    ASSERT_EQ(Status::OK, status);
+                    const camera_metadata_t* metadata =
+                            reinterpret_cast<const camera_metadata_t*>(req.data());
+                    defaultSettings = metadata;
+                    settings = req;
+                });
+        ASSERT_TRUE(ret.isOk());
+        android::status_t metadataRet = ::android::OK;
+        uint8_t videoStabilizationMode = ANDROID_CONTROL_VIDEO_STABILIZATION_MODE_OFF;
+        if (previewStabilizationOn) {
+            videoStabilizationMode = ANDROID_CONTROL_VIDEO_STABILIZATION_MODE_PREVIEW_STABILIZATION;
+            metadataRet = defaultSettings.update(ANDROID_CONTROL_VIDEO_STABILIZATION_MODE,
+                                                 &videoStabilizationMode, 1);
+        } else {
+            metadataRet = defaultSettings.update(ANDROID_CONTROL_VIDEO_STABILIZATION_MODE,
+                                                 &videoStabilizationMode, 1);
+        }
+        ASSERT_EQ(metadataRet, ::android::OK);
+        hidl_handle buffer_handle;
+        StreamBuffer outputBuffer;
+        if (useHalBufManager) {
+            outputBuffer = {halStreamConfig.streams[0].id,
+                            /*bufferId*/ 0,
+                            buffer_handle,
+                            BufferStatus::OK,
+                            nullptr,
+                            nullptr};
+        } else {
+            allocateGraphicBuffer(
+                    testStream.width, testStream.height,
+                    /* We don't look at halStreamConfig.streams[0].consumerUsage
+                     * since that is 0 for output streams
+                     */
+                    android_convertGralloc1To0Usage(halStreamConfig.streams[0].producerUsage,
+                                                    GRALLOC1_CONSUMER_USAGE_HWCOMPOSER),
+                    halStreamConfig.streams[0].overrideFormat, &buffer_handle);
+            outputBuffer = {halStreamConfig.streams[0].id,
+                            bufferId,
+                            buffer_handle,
+                            BufferStatus::OK,
+                            nullptr,
+                            nullptr};
+        }
+        ::android::hardware::hidl_vec<StreamBuffer> outputBuffers = {outputBuffer};
+        StreamBuffer emptyInputBuffer = {-1, 0, nullptr, BufferStatus::ERROR, nullptr, nullptr};
+        CaptureRequest request = {frameNumber, 0 /* fmqSettingsSize */, settings, emptyInputBuffer,
+                                  outputBuffers};
+
+        {
+            std::unique_lock<std::mutex> l(mLock);
+            mInflightMap.clear();
+            mInflightMap.add(frameNumber, &inflightReq);
+        }
+
+        Status status = Status::INTERNAL_ERROR;
+        uint32_t numRequestProcessed = 0;
+        hidl_vec<BufferCache> cachesToRemove;
+        Return<void> returnStatus = session->processCaptureRequest(
+                {request}, cachesToRemove, [&status, &numRequestProcessed](auto s, uint32_t n) {
+                    status = s;
+                    numRequestProcessed = n;
+                });
+        ASSERT_TRUE(returnStatus.isOk());
+        ASSERT_EQ(Status::OK, status);
+        ASSERT_EQ(numRequestProcessed, 1u);
+
+        {
+            std::unique_lock<std::mutex> l(mLock);
+            while (!inflightReq.errorCodeValid &&
+                   ((0 < inflightReq.numBuffersLeft) || (!inflightReq.haveResultMetadata))) {
+                auto timeout = std::chrono::system_clock::now() +
+                               std::chrono::seconds(kStreamBufferTimeoutSec);
+                ASSERT_NE(std::cv_status::timeout, mResultCondition.wait_until(l, timeout));
+            }
+
+            ASSERT_FALSE(inflightReq.errorCodeValid);
+            ASSERT_NE(inflightReq.resultOutputBuffers.size(), 0u);
+            ASSERT_EQ(testStream.id, inflightReq.resultOutputBuffers[0].buffer.streamId);
+            ASSERT_TRUE(inflightReq.shutterReadoutTimestampValid);
+            nsecs_t readoutTimestamp = inflightReq.shutterReadoutTimestamp;
+
+            if (previewStabilizationOn) {
+                // Here we collect the time difference between the buffer ready
+                // timestamp - notify readout timestamp.
+                // timeLag = buffer ready timestamp - notify readout timestamp.
+                // timeLag(previewStabilization) must be <=
+                //        timeLag(stabilization off) + 1 frame duration.
+                auto it = cameraDeviceToTimeLag.find(name.c_str());
+                camera_metadata_entry e;
+                e = inflightReq.collectedResult.find(ANDROID_SENSOR_FRAME_DURATION);
+                ASSERT_TRUE(e.count > 0);
+                nsecs_t frameDuration = e.data.i64[0];
+                ASSERT_TRUE(it != cameraDeviceToTimeLag.end());
+
+                nsecs_t previewStabOnLagTime =
+                        inflightReq.resultOutputBuffers[0].timeStamp - readoutTimestamp;
+                ASSERT_TRUE(previewStabOnLagTime <= (it->second + frameDuration));
+            } else {
+                // Fill in the buffer ready timestamp - notify timestamp;
+                cameraDeviceToTimeLag[std::string(name.c_str())] =
+                        inflightReq.resultOutputBuffers[0].timeStamp - readoutTimestamp;
+            }
         }
 
         if (useHalBufManager) {
@@ -5426,6 +5704,188 @@
     }
 }
 
+// Generate and verify 10-bit dynamic range request
+TEST_P(CameraHidlTest, process10BitDynamicRangeRequest) {
+    hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
+    uint64_t bufferId = 1;
+    uint32_t frameNumber = 1;
+    ::android::hardware::hidl_vec<uint8_t> settings;
+
+    for (const auto& name : cameraDeviceNames) {
+        int deviceVersion = getCameraDeviceVersion(name, mProviderType);
+        if (deviceVersion < CAMERA_DEVICE_API_VERSION_3_8) {
+            continue;
+        }
+        std::string version, deviceId;
+        ASSERT_TRUE(::matchDeviceName(name, mProviderType, &version, &deviceId));
+        camera_metadata_t* staticMeta;
+        Return<void> ret;
+        sp<ICameraDeviceSession> session;
+        openEmptyDeviceSession(name, mProvider, &session, &staticMeta);
+        if (!is10BitDynamicRangeCapable(staticMeta)) {
+            free_camera_metadata(staticMeta);
+            ret = session->close();
+            ASSERT_TRUE(ret.isOk());
+            continue;
+        }
+        std::vector<CameraMetadataEnumAndroidRequestAvailableDynamicRangeProfilesMap> profileList;
+        get10BitDynamicRangeProfiles(staticMeta, &profileList);
+        ASSERT_FALSE(profileList.empty());
+
+        android::hardware::camera::common::V1_0::helper::CameraMetadata defaultSettings;
+        ret = session->constructDefaultRequestSettings(
+                RequestTemplate::STILL_CAPTURE,
+                [&defaultSettings](auto status, const auto& req) mutable {
+                    ASSERT_EQ(Status::OK, status);
+
+                    const camera_metadata_t* metadata =
+                            reinterpret_cast<const camera_metadata_t*>(req.data());
+                    size_t expectedSize = req.size();
+                    int result = validate_camera_metadata_structure(metadata, &expectedSize);
+                    ASSERT_TRUE((result == 0) || (result == CAMERA_METADATA_VALIDATION_SHIFTED));
+
+                    size_t entryCount = get_camera_metadata_entry_count(metadata);
+                    ASSERT_GT(entryCount, 0u);
+                    defaultSettings = metadata;
+                });
+        ASSERT_TRUE(ret.isOk());
+
+        const camera_metadata_t* settingsBuffer = defaultSettings.getAndLock();
+        settings.setToExternal(
+                reinterpret_cast<uint8_t*>(const_cast<camera_metadata_t*>(settingsBuffer)),
+                get_camera_metadata_size(settingsBuffer));
+        overrideRotateAndCrop(&settings);
+
+        free_camera_metadata(staticMeta);
+        ret = session->close();
+        ASSERT_TRUE(ret.isOk());
+        V3_6::HalStreamConfiguration halStreamConfig;
+        bool supportsPartialResults = false;
+        bool useHalBufManager = false;
+        uint32_t partialResultCount = 0;
+        V3_2::Stream previewStream;
+        sp<device::V3_8::ICameraDeviceSession> session3_8;
+        sp<DeviceCb> cb;
+        for (const auto& profile : profileList) {
+            configureStreams3_8(name, deviceVersion, mProvider, PixelFormat::IMPLEMENTATION_DEFINED,
+                                &session3_8, &previewStream, &halStreamConfig,
+                                &supportsPartialResults, &partialResultCount, &useHalBufManager,
+                                &cb, 0, /*maxResolution*/ false, profile);
+            ASSERT_NE(session3_8, nullptr);
+
+            std::shared_ptr<ResultMetadataQueue> resultQueue;
+            auto resultQueueRet = session3_8->getCaptureResultMetadataQueue(
+                    [&resultQueue](const auto& descriptor) {
+                        resultQueue = std::make_shared<ResultMetadataQueue>(descriptor);
+                        if (!resultQueue->isValid() || resultQueue->availableToWrite() <= 0) {
+                            ALOGE("%s: HAL returns empty result metadata fmq,"
+                                  " not use it",
+                                  __func__);
+                            resultQueue = nullptr;
+                            // Don't use the queue onwards.
+                        }
+                    });
+            ASSERT_TRUE(resultQueueRet.isOk());
+
+            std::vector<hidl_handle> graphicBuffers;
+            graphicBuffers.reserve(halStreamConfig.streams.size());
+            ::android::hardware::hidl_vec<StreamBuffer> outputBuffers;
+            outputBuffers.resize(halStreamConfig.streams.size());
+            InFlightRequest inflightReq = {static_cast<ssize_t>(halStreamConfig.streams.size()),
+                                           false,
+                                           supportsPartialResults,
+                                           partialResultCount,
+                                           std::unordered_set<std::string>(),
+                                           resultQueue};
+
+            size_t k = 0;
+            for (const auto& halStream : halStreamConfig.streams) {
+                hidl_handle buffer_handle;
+                if (useHalBufManager) {
+                    outputBuffers[k] = {halStream.v3_4.v3_3.v3_2.id,
+                                        0,
+                                        buffer_handle,
+                                        BufferStatus::OK,
+                                        nullptr,
+                                        nullptr};
+                } else {
+                    allocateGraphicBuffer(
+                            previewStream.width, previewStream.height,
+                            android_convertGralloc1To0Usage(halStream.v3_4.v3_3.v3_2.producerUsage,
+                                                            halStream.v3_4.v3_3.v3_2.consumerUsage),
+                            halStream.v3_4.v3_3.v3_2.overrideFormat, &buffer_handle);
+
+                    graphicBuffers.push_back(buffer_handle);
+                    outputBuffers[k] = {halStream.v3_4.v3_3.v3_2.id,
+                                        bufferId,
+                                        buffer_handle,
+                                        BufferStatus::OK,
+                                        nullptr,
+                                        nullptr};
+                    bufferId++;
+                }
+                k++;
+            }
+
+            StreamBuffer emptyInputBuffer = {-1, 0, nullptr, BufferStatus::ERROR, nullptr, nullptr};
+            V3_4::CaptureRequest request3_4;
+            request3_4.v3_2.frameNumber = frameNumber;
+            request3_4.v3_2.fmqSettingsSize = 0;
+            request3_4.v3_2.settings = settings;
+            request3_4.v3_2.inputBuffer = emptyInputBuffer;
+            request3_4.v3_2.outputBuffers = outputBuffers;
+            V3_7::CaptureRequest request3_7;
+            request3_7.v3_4 = request3_4;
+            request3_7.inputWidth = 0;
+            request3_7.inputHeight = 0;
+
+            {
+                std::unique_lock<std::mutex> l(mLock);
+                mInflightMap.clear();
+                mInflightMap.add(frameNumber, &inflightReq);
+            }
+
+            Status stat = Status::INTERNAL_ERROR;
+            uint32_t numRequestProcessed = 0;
+            hidl_vec<BufferCache> cachesToRemove;
+            Return<void> returnStatus = session3_8->processCaptureRequest_3_7(
+                    {request3_7}, cachesToRemove,
+                    [&stat, &numRequestProcessed](auto s, uint32_t n) {
+                        stat = s;
+                        numRequestProcessed = n;
+                    });
+            ASSERT_TRUE(returnStatus.isOk());
+            ASSERT_EQ(Status::OK, stat);
+            ASSERT_EQ(numRequestProcessed, 1u);
+
+            {
+                std::unique_lock<std::mutex> l(mLock);
+                while (!inflightReq.errorCodeValid &&
+                       ((0 < inflightReq.numBuffersLeft) || (!inflightReq.haveResultMetadata))) {
+                    auto timeout = std::chrono::system_clock::now() +
+                                   std::chrono::seconds(kStreamBufferTimeoutSec);
+                    ASSERT_NE(std::cv_status::timeout, mResultCondition.wait_until(l, timeout));
+                }
+
+                ASSERT_FALSE(inflightReq.errorCodeValid);
+                ASSERT_NE(inflightReq.resultOutputBuffers.size(), 0u);
+                verify10BitMetadata(mHandleImporter, inflightReq, profile);
+            }
+            if (useHalBufManager) {
+                hidl_vec<int32_t> streamIds(halStreamConfig.streams.size());
+                for (size_t i = 0; i < streamIds.size(); i++) {
+                    streamIds[i] = halStreamConfig.streams[i].v3_4.v3_3.v3_2.id;
+                }
+                session3_8->signalStreamFlush(streamIds, /*streamConfigCounter*/ 0);
+                cb->waitForBuffersReturned();
+            }
+
+            ret = session3_8->close();
+            ASSERT_TRUE(ret.isOk());
+        }
+    }
+}
+
 // Generate and verify a burst containing alternating sensor sensitivity values
 TEST_P(CameraHidlTest, processCaptureRequestBurstISO) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
@@ -5567,7 +6027,7 @@
 
             ASSERT_FALSE(inflightReqs[i].errorCodeValid);
             ASSERT_NE(inflightReqs[i].resultOutputBuffers.size(), 0u);
-            ASSERT_EQ(previewStream.id, inflightReqs[i].resultOutputBuffers[0].streamId);
+            ASSERT_EQ(previewStream.id, inflightReqs[i].resultOutputBuffers[0].buffer.streamId);
             ASSERT_FALSE(inflightReqs[i].collectedResult.isEmpty());
             ASSERT_TRUE(inflightReqs[i].collectedResult.exists(ANDROID_SENSOR_SENSITIVITY));
             camera_metadata_entry_t isoResult = inflightReqs[i].collectedResult.find(
@@ -5851,7 +6311,7 @@
 
             ASSERT_FALSE(inflightReqs[i].errorCodeValid);
             ASSERT_NE(inflightReqs[i].resultOutputBuffers.size(), 0u);
-            ASSERT_EQ(stream.id, inflightReqs[i].resultOutputBuffers[0].streamId);
+            ASSERT_EQ(stream.id, inflightReqs[i].resultOutputBuffers[0].buffer.streamId);
             ASSERT_FALSE(inflightReqs[i].collectedResult.isEmpty());
         }
 
@@ -6047,7 +6507,7 @@
 
             if (!inflightReq.errorCodeValid) {
                 ASSERT_NE(inflightReq.resultOutputBuffers.size(), 0u);
-                ASSERT_EQ(previewStream.id, inflightReq.resultOutputBuffers[0].streamId);
+                ASSERT_EQ(previewStream.id, inflightReq.resultOutputBuffers[0].buffer.streamId);
             } else {
                 switch (inflightReq.errorCode) {
                     case ErrorCode::ERROR_REQUEST:
@@ -6419,142 +6879,6 @@
     }
 }
 
-// Test the multi-camera API requirement for Google Requirement Freeze S
-// Note that this requirement can only be partially tested. If a vendor
-// device doesn't expose a physical camera in any shape or form, there is no way
-// the test can catch it.
-TEST_P(CameraHidlTest, grfSMultiCameraTest) {
-    const int socGrfApi = property_get_int32("ro.board.first_api_level", /*default*/ -1);
-    if (socGrfApi < 31 /*S*/) {
-        // Non-GRF devices, or version < 31 Skip
-        ALOGI("%s: socGrfApi level is %d. Skipping", __FUNCTION__, socGrfApi);
-        return;
-    }
-
-    // Test that if more than one rear-facing color camera is
-    // supported, there must be at least one rear-facing logical camera.
-    hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
-    // Back facing non-logical color cameras
-    std::set<std::string> rearColorCameras;
-    // Back facing logical cameras' physical camera Id sets
-    std::set<std::set<std::string>> rearPhysicalIds;
-    for (const auto& name : cameraDeviceNames) {
-        std::string cameraId;
-        int deviceVersion = getCameraDeviceVersionAndId(name, mProviderType, &cameraId);
-        switch (deviceVersion) {
-            case CAMERA_DEVICE_API_VERSION_3_8:
-            case CAMERA_DEVICE_API_VERSION_3_7:
-            case CAMERA_DEVICE_API_VERSION_3_6:
-            case CAMERA_DEVICE_API_VERSION_3_5:
-            case CAMERA_DEVICE_API_VERSION_3_4:
-            case CAMERA_DEVICE_API_VERSION_3_3:
-            case CAMERA_DEVICE_API_VERSION_3_2: {
-                ::android::sp<::android::hardware::camera::device::V3_2::ICameraDevice> device3_x;
-                ALOGI("getCameraCharacteristics: Testing camera device %s", name.c_str());
-                Return<void> ret;
-                ret = mProvider->getCameraDeviceInterface_V3_x(
-                        name, [&](auto status, const auto& device) {
-                            ALOGI("getCameraDeviceInterface_V3_x returns status:%d", (int)status);
-                            ASSERT_EQ(Status::OK, status);
-                            ASSERT_NE(device, nullptr);
-                            device3_x = device;
-                        });
-                ASSERT_TRUE(ret.isOk());
-
-                ret = device3_x->getCameraCharacteristics([&](auto status, const auto& chars) {
-                    ASSERT_EQ(Status::OK, status);
-                    const camera_metadata_t* metadata = (camera_metadata_t*)chars.data();
-
-                    // Skip if this is not a color camera.
-                    if (!CameraHidlTest::isColorCamera(metadata)) {
-                        return;
-                    }
-
-                    // Check camera facing. Skip if facing is not BACK.
-                    // If this is not a logical camera, only note down
-                    // the camera ID, and skip.
-                    camera_metadata_ro_entry entry;
-                    int retcode = find_camera_metadata_ro_entry(
-                            metadata, ANDROID_LENS_FACING, &entry);
-                    ASSERT_EQ(retcode, 0);
-                    ASSERT_GT(entry.count, 0);
-                    uint8_t facing = entry.data.u8[0];
-                    bool isLogicalCamera = (isLogicalMultiCamera(metadata) == Status::OK);
-                    if (facing != ANDROID_LENS_FACING_BACK) {
-                        // Not BACK facing. Skip.
-                        return;
-                    }
-                    if (!isLogicalCamera) {
-                        rearColorCameras.insert(cameraId);
-                        return;
-                    }
-
-                    // Check logical camera's physical camera IDs for color
-                    // cameras.
-                    std::unordered_set<std::string> physicalCameraIds;
-                    Status s = getPhysicalCameraIds(metadata, &physicalCameraIds);
-                    ASSERT_EQ(Status::OK, s);
-                    rearPhysicalIds.emplace(physicalCameraIds.begin(), physicalCameraIds.end());
-                    for (const auto& physicalId : physicalCameraIds) {
-                        // Skip if the physicalId is publicly available
-                        for (auto& deviceName : cameraDeviceNames) {
-                            std::string publicVersion, publicId;
-                            ASSERT_TRUE(::matchDeviceName(deviceName, mProviderType,
-                                                          &publicVersion, &publicId));
-                            if (physicalId == publicId) {
-                                // Skip because public Ids will be iterated in outer loop.
-                                return;
-                            }
-                        }
-
-                        auto castResult = device::V3_5::ICameraDevice::castFrom(device3_x);
-                        ASSERT_TRUE(castResult.isOk());
-                        ::android::sp<::android::hardware::camera::device::V3_5::ICameraDevice>
-                                device3_5 = castResult;
-                        ASSERT_NE(device3_5, nullptr);
-
-                        // Check camera characteristics for hidden camera id
-                        Return<void> ret = device3_5->getPhysicalCameraCharacteristics(
-                                physicalId, [&](auto status, const auto& chars) {
-                            ASSERT_EQ(Status::OK, status);
-                            const camera_metadata_t* physicalMetadata =
-                                    (camera_metadata_t*)chars.data();
-
-                            if (CameraHidlTest::isColorCamera(physicalMetadata)) {
-                                rearColorCameras.insert(physicalId);
-                            }
-                        });
-                        ASSERT_TRUE(ret.isOk());
-                    }
-                });
-                ASSERT_TRUE(ret.isOk());
-            } break;
-            case CAMERA_DEVICE_API_VERSION_1_0: {
-                // Not applicable
-            } break;
-            default: {
-                ALOGE("%s: Unsupported device version %d", __func__, deviceVersion);
-                ADD_FAILURE();
-            } break;
-        }
-    }
-
-    // If there are more than one rear-facing color camera, a logical
-    // multi-camera must be defined consisting of all rear-facing color
-    // cameras.
-    if (rearColorCameras.size() > 1) {
-        bool hasRearLogical = false;
-        for (const auto& physicalIds : rearPhysicalIds) {
-            if (std::includes(physicalIds.begin(), physicalIds.end(),
-                    rearColorCameras.begin(), rearColorCameras.end())) {
-                hasRearLogical = true;
-                break;
-            }
-        }
-        ASSERT_TRUE(hasRearLogical);
-    }
-}
-
 // Retrieve all valid output stream resolutions from the camera
 // static characteristics.
 Status CameraHidlTest::getAvailableOutputStreams(const camera_metadata_t* staticMeta,
@@ -7062,23 +7386,6 @@
     return ret;
 }
 
-bool CameraHidlTest::isColorCamera(const camera_metadata_t *metadata) {
-    camera_metadata_ro_entry entry;
-    int retcode = find_camera_metadata_ro_entry(
-            metadata, ANDROID_REQUEST_AVAILABLE_CAPABILITIES, &entry);
-    if ((0 == retcode) && (entry.count > 0)) {
-        bool isBackwardCompatible = (std::find(entry.data.u8, entry.data.u8 + entry.count,
-                ANDROID_REQUEST_AVAILABLE_CAPABILITIES_BACKWARD_COMPATIBLE) !=
-                entry.data.u8 + entry.count);
-        bool isMonochrome = (std::find(entry.data.u8, entry.data.u8 + entry.count,
-                ANDROID_REQUEST_AVAILABLE_CAPABILITIES_MONOCHROME) !=
-                entry.data.u8 + entry.count);
-        bool isColor = isBackwardCompatible && !isMonochrome;
-        return isColor;
-    }
-    return false;
-}
-
 // Retrieve the reprocess input-output format map from the static
 // camera characteristics.
 Status CameraHidlTest::getZSLInputOutputMap(camera_metadata_t *staticMeta,
@@ -7234,8 +7541,9 @@
     sp<device::V3_4::ICameraDeviceSession> session3_4;
     sp<device::V3_5::ICameraDeviceSession> session3_5;
     sp<device::V3_6::ICameraDeviceSession> session3_6;
+    sp<device::V3_8::ICameraDeviceSession> session3_8;
     castSession(session, deviceVersion, &session3_3, &session3_4, &session3_5, &session3_6,
-                session3_7);
+                session3_7, &session3_8);
     ASSERT_NE(nullptr, (*session3_7).get());
 
     *useHalBufManager = false;
@@ -7283,7 +7591,8 @@
     ASSERT_TRUE(deviceVersion >= CAMERA_DEVICE_API_VERSION_3_7);
     sp<device::V3_5::ICameraDevice> cameraDevice3_5 = nullptr;
     sp<device::V3_7::ICameraDevice> cameraDevice3_7 = nullptr;
-    castDevice(device3_x, deviceVersion, &cameraDevice3_5, &cameraDevice3_7);
+    sp<device::V3_8::ICameraDevice> cameraDevice3_8 = nullptr;
+    castDevice(device3_x, deviceVersion, &cameraDevice3_5, &cameraDevice3_7, &cameraDevice3_8);
     ASSERT_NE(cameraDevice3_7, nullptr);
     bool supported = false;
     ret = cameraDevice3_7->isStreamCombinationSupported_3_7(
@@ -7316,6 +7625,153 @@
     ASSERT_TRUE(ret.isOk());
 }
 
+// Configure streams
+void CameraHidlTest::configureStreams3_8(
+        const std::string& name, int32_t deviceVersion, sp<ICameraProvider> provider,
+        PixelFormat format, sp<device::V3_8::ICameraDeviceSession>* session3_8 /*out*/,
+        V3_2::Stream* previewStream /*out*/,
+        device::V3_6::HalStreamConfiguration* halStreamConfig /*out*/,
+        bool* supportsPartialResults /*out*/, uint32_t* partialResultCount /*out*/,
+        bool* useHalBufManager /*out*/, sp<DeviceCb>* outCb /*out*/, uint32_t streamConfigCounter,
+        bool maxResolution,
+        CameraMetadataEnumAndroidRequestAvailableDynamicRangeProfilesMap prof) {
+    ASSERT_NE(nullptr, session3_8);
+    ASSERT_NE(nullptr, halStreamConfig);
+    ASSERT_NE(nullptr, previewStream);
+    ASSERT_NE(nullptr, supportsPartialResults);
+    ASSERT_NE(nullptr, partialResultCount);
+    ASSERT_NE(nullptr, useHalBufManager);
+    ASSERT_NE(nullptr, outCb);
+    ASSERT_TRUE(deviceVersion >= CAMERA_DEVICE_API_VERSION_3_8);
+
+    std::vector<AvailableStream> outputStreams;
+    ::android::sp<ICameraDevice> device3_x;
+    ALOGI("configureStreams: Testing camera device %s", name.c_str());
+    Return<void> ret;
+    ret = provider->getCameraDeviceInterface_V3_x(name, [&](auto status, const auto& device) {
+        ALOGI("getCameraDeviceInterface_V3_x returns status:%d", (int)status);
+        ASSERT_EQ(Status::OK, status);
+        ASSERT_NE(device, nullptr);
+        device3_x = device;
+    });
+    ASSERT_TRUE(ret.isOk());
+
+    camera_metadata_t* staticMeta;
+    ret = device3_x->getCameraCharacteristics([&](Status s, CameraMetadata metadata) {
+        ASSERT_EQ(Status::OK, s);
+        staticMeta =
+                clone_camera_metadata(reinterpret_cast<const camera_metadata_t*>(metadata.data()));
+        ASSERT_NE(nullptr, staticMeta);
+    });
+    ASSERT_TRUE(ret.isOk());
+
+    camera_metadata_ro_entry entry;
+    auto status =
+            find_camera_metadata_ro_entry(staticMeta, ANDROID_REQUEST_PARTIAL_RESULT_COUNT, &entry);
+    if ((0 == status) && (entry.count > 0)) {
+        *partialResultCount = entry.data.i32[0];
+        *supportsPartialResults = (*partialResultCount > 1);
+    }
+
+    sp<DeviceCb> cb = new DeviceCb(this, deviceVersion, staticMeta);
+    sp<ICameraDeviceSession> session;
+    ret = device3_x->open(cb, [&session](auto status, const auto& newSession) {
+        ALOGI("device::open returns status:%d", (int)status);
+        ASSERT_EQ(Status::OK, status);
+        ASSERT_NE(newSession, nullptr);
+        session = newSession;
+    });
+    ASSERT_TRUE(ret.isOk());
+    *outCb = cb;
+
+    sp<device::V3_3::ICameraDeviceSession> session3_3;
+    sp<device::V3_4::ICameraDeviceSession> session3_4;
+    sp<device::V3_5::ICameraDeviceSession> session3_5;
+    sp<device::V3_6::ICameraDeviceSession> session3_6;
+    sp<device::V3_7::ICameraDeviceSession> session3_7;
+    castSession(session, deviceVersion, &session3_3, &session3_4, &session3_5, &session3_6,
+                &session3_7, session3_8);
+    ASSERT_NE(nullptr, (*session3_8).get());
+
+    *useHalBufManager = false;
+    status = find_camera_metadata_ro_entry(
+            staticMeta, ANDROID_INFO_SUPPORTED_BUFFER_MANAGEMENT_VERSION, &entry);
+    if ((0 == status) && (entry.count == 1)) {
+        *useHalBufManager = (entry.data.u8[0] ==
+                             ANDROID_INFO_SUPPORTED_BUFFER_MANAGEMENT_VERSION_HIDL_DEVICE_3_5);
+    }
+
+    outputStreams.clear();
+    Size maxSize;
+    auto rc = getMaxOutputSizeForFormat(staticMeta, format, &maxSize, maxResolution);
+    ASSERT_EQ(Status::OK, rc);
+    free_camera_metadata(staticMeta);
+
+    ::android::hardware::hidl_vec<V3_8::Stream> streams3_8(1);
+    streams3_8[0].v3_7.groupId = -1;
+    streams3_8[0].v3_7.sensorPixelModesUsed = {
+            CameraMetadataEnumAndroidSensorPixelMode::ANDROID_SENSOR_PIXEL_MODE_DEFAULT};
+    streams3_8[0].v3_7.v3_4.bufferSize = 0;
+    streams3_8[0].v3_7.v3_4.v3_2.id = 0;
+    streams3_8[0].v3_7.v3_4.v3_2.streamType = StreamType::OUTPUT;
+    streams3_8[0].v3_7.v3_4.v3_2.width = static_cast<uint32_t>(maxSize.width);
+    streams3_8[0].v3_7.v3_4.v3_2.height = static_cast<uint32_t>(maxSize.height);
+    streams3_8[0].v3_7.v3_4.v3_2.format = static_cast<PixelFormat>(format);
+    streams3_8[0].v3_7.v3_4.v3_2.usage = GRALLOC1_CONSUMER_USAGE_CPU_READ;
+    streams3_8[0].v3_7.v3_4.v3_2.dataSpace = 0;
+    streams3_8[0].v3_7.v3_4.v3_2.rotation = StreamRotation::ROTATION_0;
+    streams3_8[0].dynamicRangeProfile = prof;
+
+    ::android::hardware::camera::device::V3_8::StreamConfiguration config3_8;
+    config3_8.streams = streams3_8;
+    config3_8.operationMode = StreamConfigurationMode::NORMAL_MODE;
+    config3_8.streamConfigCounter = streamConfigCounter;
+    config3_8.multiResolutionInputImage = false;
+    RequestTemplate reqTemplate = RequestTemplate::STILL_CAPTURE;
+    ret = (*session3_8)
+                  ->constructDefaultRequestSettings(reqTemplate,
+                                                    [&config3_8](auto status, const auto& req) {
+                                                        ASSERT_EQ(Status::OK, status);
+                                                        config3_8.sessionParams = req;
+                                                    });
+    ASSERT_TRUE(ret.isOk());
+
+    sp<device::V3_5::ICameraDevice> cameraDevice3_5 = nullptr;
+    sp<device::V3_7::ICameraDevice> cameraDevice3_7 = nullptr;
+    sp<device::V3_8::ICameraDevice> cameraDevice3_8 = nullptr;
+    castDevice(device3_x, deviceVersion, &cameraDevice3_5, &cameraDevice3_7, &cameraDevice3_8);
+    ASSERT_NE(cameraDevice3_8, nullptr);
+    bool supported = false;
+    ret = cameraDevice3_8->isStreamCombinationSupported_3_8(
+            config3_8, [&supported](Status s, bool combStatus) {
+                ASSERT_TRUE((Status::OK == s) || (Status::METHOD_NOT_SUPPORTED == s));
+                if (Status::OK == s) {
+                    supported = combStatus;
+                }
+            });
+    ASSERT_TRUE(ret.isOk());
+    ASSERT_EQ(supported, true);
+
+    if (*session3_8 != nullptr) {
+        ret = (*session3_8)
+                      ->configureStreams_3_8(
+                              config3_8,
+                              [&](Status s, device::V3_6::HalStreamConfiguration halConfig) {
+                                  ASSERT_EQ(Status::OK, s);
+                                  *halStreamConfig = halConfig;
+                                  if (*useHalBufManager) {
+                                      hidl_vec<V3_4::Stream> streams(1);
+                                      hidl_vec<V3_2::HalStream> halStreams(1);
+                                      streams[0] = streams3_8[0].v3_7.v3_4;
+                                      halStreams[0] = halConfig.streams[0].v3_4.v3_3.v3_2;
+                                      cb->setCurrentStreamConfig(streams, halStreams);
+                                  }
+                              });
+    }
+    *previewStream = streams3_8[0].v3_7.v3_4.v3_2;
+    ASSERT_TRUE(ret.isOk());
+}
+
 // Configure multiple preview streams using different physical ids.
 void CameraHidlTest::configurePreviewStreams3_4(const std::string &name, int32_t deviceVersion,
         sp<ICameraProvider> provider,
@@ -7390,8 +7846,9 @@
     sp<device::V3_3::ICameraDeviceSession> session3_3;
     sp<device::V3_6::ICameraDeviceSession> session3_6;
     sp<device::V3_7::ICameraDeviceSession> session3_7;
+    sp<device::V3_8::ICameraDeviceSession> session3_8;
     castSession(session, deviceVersion, &session3_3, session3_4, session3_5,
-            &session3_6, &session3_7);
+            &session3_6, &session3_7, &session3_8);
     ASSERT_NE(nullptr, (*session3_4).get());
 
     *useHalBufManager = false;
@@ -7436,7 +7893,8 @@
     if (allowUnsupport) {
         sp<device::V3_5::ICameraDevice> cameraDevice3_5;
         sp<device::V3_7::ICameraDevice> cameraDevice3_7;
-        castDevice(device3_x, deviceVersion, &cameraDevice3_5, &cameraDevice3_7);
+        sp<device::V3_8::ICameraDevice> cameraDevice3_8;
+        castDevice(device3_x, deviceVersion, &cameraDevice3_5, &cameraDevice3_7, &cameraDevice3_8);
 
         bool supported = false;
         ret = cameraDevice3_5->isStreamCombinationSupported(config3_4,
@@ -7629,6 +8087,95 @@
     return false;
 }
 
+void CameraHidlTest::get10BitDynamicRangeProfiles(const camera_metadata_t* staticMeta,
+        std::vector<CameraMetadataEnumAndroidRequestAvailableDynamicRangeProfilesMap> *profiles) {
+    ASSERT_NE(nullptr, staticMeta);
+    ASSERT_NE(nullptr, profiles);
+    camera_metadata_ro_entry entry;
+    std::unordered_set<int32_t> entries;
+    int rc = find_camera_metadata_ro_entry(staticMeta,
+            ANDROID_REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES_MAP, &entry);
+    ASSERT_EQ(rc, 0);
+    ASSERT_TRUE(entry.count > 0);
+    ASSERT_EQ(entry.count % 2, 0);
+
+    for (uint32_t i = 0; i < entry.count; i += 2) {
+        ASSERT_NE(entry.data.i32[i],
+                ANDROID_REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES_MAP_STANDARD);
+        ASSERT_EQ(entries.find(entry.data.i32[i]), entries.end());
+        entries.insert(static_cast<int32_t>(entry.data.i32[i]));
+        profiles->emplace_back(
+                static_cast<CameraMetadataEnumAndroidRequestAvailableDynamicRangeProfilesMap>
+                (entry.data.i32[i]));
+    }
+
+    if (!entries.empty()) {
+        ASSERT_NE(entries.find(ANDROID_REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES_MAP_HLG10),
+                entries.end());
+    }
+}
+
+bool CameraHidlTest::is10BitDynamicRangeCapable(const camera_metadata_t* staticMeta) {
+    camera_metadata_ro_entry scalarEntry;
+    int rc = find_camera_metadata_ro_entry(staticMeta, ANDROID_REQUEST_AVAILABLE_CAPABILITIES,
+                                           &scalarEntry);
+    if (rc == 0) {
+        for (uint32_t i = 0; i < scalarEntry.count; i++) {
+            if (scalarEntry.data.u8[i] ==
+                ANDROID_REQUEST_AVAILABLE_CAPABILITIES_DYNAMIC_RANGE_TEN_BIT) {
+                return true;
+            }
+        }
+    }
+    return false;
+}
+
+void CameraHidlTest::verify10BitMetadata(HandleImporter& importer,
+        const InFlightRequest& request,
+        CameraMetadataEnumAndroidRequestAvailableDynamicRangeProfilesMap profile) {
+    for (const auto& b : request.resultOutputBuffers) {
+        bool smpte2086Present = importer.isSmpte2086Present(b.buffer.buffer.getNativeHandle());
+        bool smpte2094_10Present = importer.isSmpte2094_10Present(
+                b.buffer.buffer.getNativeHandle());
+        bool smpte2094_40Present = importer.isSmpte2094_40Present(
+                b.buffer.buffer.getNativeHandle());
+
+        switch (static_cast<uint32_t>(profile)) {
+            case ANDROID_REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES_MAP_HLG10:
+                ASSERT_FALSE(smpte2086Present);
+                ASSERT_FALSE(smpte2094_10Present);
+                ASSERT_FALSE(smpte2094_40Present);
+                break;
+            case ANDROID_REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES_MAP_HDR10:
+                ASSERT_TRUE(smpte2086Present);
+                ASSERT_FALSE(smpte2094_10Present);
+                ASSERT_FALSE(smpte2094_40Present);
+                break;
+            case ANDROID_REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES_MAP_HDR10_PLUS:
+                ASSERT_FALSE(smpte2086Present);
+                ASSERT_FALSE(smpte2094_10Present);
+                ASSERT_TRUE(smpte2094_40Present);
+                break;
+            case ANDROID_REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES_MAP_DOLBY_VISION_10B_HDR_REF:
+            case ANDROID_REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES_MAP_DOLBY_VISION_10B_HDR_REF_PO:
+            case ANDROID_REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES_MAP_DOLBY_VISION_10B_HDR_OEM:
+            case ANDROID_REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES_MAP_DOLBY_VISION_10B_HDR_OEM_PO:
+            case ANDROID_REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES_MAP_DOLBY_VISION_8B_HDR_REF:
+            case ANDROID_REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES_MAP_DOLBY_VISION_8B_HDR_REF_PO:
+            case ANDROID_REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES_MAP_DOLBY_VISION_8B_HDR_OEM:
+            case ANDROID_REQUEST_AVAILABLE_DYNAMIC_RANGE_PROFILES_MAP_DOLBY_VISION_8B_HDR_OEM_PO:
+                ASSERT_FALSE(smpte2086Present);
+                ASSERT_TRUE(smpte2094_10Present);
+                ASSERT_FALSE(smpte2094_40Present);
+                break;
+            default:
+                ALOGE("%s: Unexpected 10-bit dynamic range profile: %d",
+                        __FUNCTION__, profile);
+                ADD_FAILURE();
+        }
+    }
+}
+
 bool CameraHidlTest::isDepthOnly(const camera_metadata_t* staticMeta) {
     camera_metadata_ro_entry scalarEntry;
     camera_metadata_ro_entry depthEntry;
@@ -7685,6 +8232,47 @@
                           previewStream, halStreamConfig, supportsPartialResults,
                           partialResultCount, useHalBufManager, outCb, streamConfigCounter);
 }
+
+bool CameraHidlTest::supportsPreviewStabilization(const std::string& name,
+                                                  sp<ICameraProvider> provider) {
+    Return<void> ret;
+    sp<ICameraDevice> device3_x = nullptr;
+    ret = provider->getCameraDeviceInterface_V3_x(name, [&](auto status, const auto& device) {
+        ALOGI("getCameraDeviceInterface_V3_x returns status:%d", (int)status);
+        ASSERT_EQ(Status::OK, status);
+        ASSERT_NE(device, nullptr);
+        device3_x = device;
+    });
+    if (!(ret.isOk())) {
+        ADD_FAILURE() << "Failed to get camera device interface for " << name;
+    }
+
+    camera_metadata_t* staticMeta = nullptr;
+    ret = device3_x->getCameraCharacteristics([&](Status s, CameraMetadata metadata) {
+        ASSERT_EQ(Status::OK, s);
+        staticMeta =
+                clone_camera_metadata(reinterpret_cast<const camera_metadata_t*>(metadata.data()));
+    });
+    if (!(ret.isOk())) {
+        ADD_FAILURE() << "Failed to get camera characteristics for " << name;
+    }
+    // Go through the characteristics and see if video stabilization modes have
+    // preview stabilization
+    camera_metadata_ro_entry entry;
+
+    int retcode = find_camera_metadata_ro_entry(
+            staticMeta, ANDROID_CONTROL_AVAILABLE_VIDEO_STABILIZATION_MODES, &entry);
+    if ((0 == retcode) && (entry.count > 0)) {
+        for (auto i = 0; i < entry.count; i++) {
+            if (entry.data.u8[i] ==
+                ANDROID_CONTROL_VIDEO_STABILIZATION_MODE_PREVIEW_STABILIZATION) {
+                return true;
+            }
+        }
+    }
+    return false;
+}
+
 // Open a device session and configure a preview stream.
 void CameraHidlTest::configureSingleStream(
         const std::string& name, int32_t deviceVersion, sp<ICameraProvider> provider,
@@ -7751,8 +8339,9 @@
     sp<device::V3_5::ICameraDeviceSession> session3_5;
     sp<device::V3_6::ICameraDeviceSession> session3_6;
     sp<device::V3_7::ICameraDeviceSession> session3_7;
+    sp<device::V3_8::ICameraDeviceSession> session3_8;
     castSession(*session, deviceVersion, &session3_3, &session3_4, &session3_5,
-            &session3_6, &session3_7);
+            &session3_6, &session3_7, &session3_8);
 
     *useHalBufManager = false;
     status = find_camera_metadata_ro_entry(staticMeta,
@@ -7883,12 +8472,19 @@
 void CameraHidlTest::castDevice(const sp<device::V3_2::ICameraDevice>& device,
                                 int32_t deviceVersion,
                                 sp<device::V3_5::ICameraDevice>* device3_5 /*out*/,
-                                sp<device::V3_7::ICameraDevice>* device3_7 /*out*/) {
+                                sp<device::V3_7::ICameraDevice>* device3_7 /*out*/,
+                                sp<device::V3_8::ICameraDevice>* device3_8 /*out*/) {
     ASSERT_NE(nullptr, device3_5);
     ASSERT_NE(nullptr, device3_7);
+    ASSERT_NE(nullptr, device3_8);
 
     switch (deviceVersion) {
-        case CAMERA_DEVICE_API_VERSION_3_8:
+        case CAMERA_DEVICE_API_VERSION_3_8: {
+            auto castResult = device::V3_8::ICameraDevice::castFrom(device);
+            ASSERT_TRUE(castResult.isOk());
+            *device3_8 = castResult;
+        }
+            [[fallthrough]];
         case CAMERA_DEVICE_API_VERSION_3_7: {
             auto castResult = device::V3_7::ICameraDevice::castFrom(device);
             ASSERT_TRUE(castResult.isOk());
@@ -7937,15 +8533,22 @@
         sp<device::V3_4::ICameraDeviceSession> *session3_4 /*out*/,
         sp<device::V3_5::ICameraDeviceSession> *session3_5 /*out*/,
         sp<device::V3_6::ICameraDeviceSession> *session3_6 /*out*/,
-        sp<device::V3_7::ICameraDeviceSession> *session3_7 /*out*/) {
+        sp<device::V3_7::ICameraDeviceSession> *session3_7 /*out*/,
+        sp<device::V3_8::ICameraDeviceSession> *session3_8 /*out*/) {
     ASSERT_NE(nullptr, session3_3);
     ASSERT_NE(nullptr, session3_4);
     ASSERT_NE(nullptr, session3_5);
     ASSERT_NE(nullptr, session3_6);
     ASSERT_NE(nullptr, session3_7);
+    ASSERT_NE(nullptr, session3_8);
 
     switch (deviceVersion) {
-        case CAMERA_DEVICE_API_VERSION_3_8:
+        case CAMERA_DEVICE_API_VERSION_3_8: {
+            auto castResult = device::V3_8::ICameraDeviceSession::castFrom(session);
+            ASSERT_TRUE(castResult.isOk());
+            *session3_8 = castResult;
+        }
+        [[fallthrough]];
         case CAMERA_DEVICE_API_VERSION_3_7: {
             auto castResult = device::V3_7::ICameraDeviceSession::castFrom(session);
             ASSERT_TRUE(castResult.isOk());
@@ -8822,8 +9425,9 @@
     sp<device::V3_5::ICameraDeviceSession> session3_5;
     sp<device::V3_6::ICameraDeviceSession> session3_6;
     sp<device::V3_7::ICameraDeviceSession> session3_7;
+    sp<device::V3_8::ICameraDeviceSession> session3_8;
     castSession(session, deviceVersion, &session3_3, &session3_4, &session3_5,
-            &session3_6, &session3_7);
+            &session3_6, &session3_7, &session3_8);
     ASSERT_NE(nullptr, session3_5.get());
 
     hidl_vec<int32_t> streamIds(1);
@@ -9065,7 +9669,7 @@
     size_t CONFIG_ENTRY_TYPE_OFFSET = 3;
     size_t CONFIG_ENTRY_BITFIELD_OFFSET = 4;
     uint32_t maxPublicUsecase =
-            ANDROID_SCALER_AVAILABLE_RECOMMENDED_STREAM_CONFIGURATIONS_PUBLIC_END;
+            ANDROID_SCALER_AVAILABLE_RECOMMENDED_STREAM_CONFIGURATIONS_PUBLIC_END_3_8;
     uint32_t vendorUsecaseStart =
             ANDROID_SCALER_AVAILABLE_RECOMMENDED_STREAM_CONFIGURATIONS_VENDOR_START;
     uint32_t usecaseMask = (1 << vendorUsecaseStart) - 1;
diff --git a/common/support/Android.bp b/common/support/Android.bp
index b24893b..718901e 100644
--- a/common/support/Android.bp
+++ b/common/support/Android.bp
@@ -11,7 +11,11 @@
     name: "libaidlcommonsupport",
     vendor_available: true,
     host_supported: true,
-    defaults: ["libbinder_ndk_host_user"],
+    target: {
+        darwin: {
+            enabled: false,
+        },
+    },
     srcs: ["NativeHandle.cpp"],
     export_include_dirs: ["include"],
     shared_libs: [
@@ -28,7 +32,11 @@
 cc_test {
     name: "libaidlcommonsupport_test",
     host_supported: true,
-    defaults: ["libbinder_ndk_host_user"],
+    target: {
+        darwin: {
+            enabled: false,
+        },
+    },
     srcs: ["test.cpp"],
     static_libs: [
         "android.hardware.common-V2-ndk",
diff --git a/compatibility_matrices/compatibility_matrix.3.xml b/compatibility_matrices/compatibility_matrix.3.xml
index a75ed25..468735d 100644
--- a/compatibility_matrices/compatibility_matrix.3.xml
+++ b/compatibility_matrices/compatibility_matrix.3.xml
@@ -207,7 +207,10 @@
             <instance>default</instance>
         </interface>
     </hal>
-    <hal format="hidl" optional="false">
+    <!-- Either the AIDL or the HIDL health HAL must exist on the device.
+         If the HIDL health HAL exists, it must be at least version 2.0.
+         See DeviceManifestTest.HealthHal -->
+    <hal format="hidl" optional="true">
         <name>android.hardware.health</name>
         <version>2.0</version>
         <interface>
diff --git a/compatibility_matrices/compatibility_matrix.4.xml b/compatibility_matrices/compatibility_matrix.4.xml
index 3b8ee21..96f291f 100644
--- a/compatibility_matrices/compatibility_matrix.4.xml
+++ b/compatibility_matrices/compatibility_matrix.4.xml
@@ -213,7 +213,10 @@
             <instance>default</instance>
         </interface>
     </hal>
-    <hal format="hidl" optional="false">
+    <!-- Either the AIDL or the HIDL health HAL must exist on the device.
+         If the HIDL health HAL exists, it must be at least version 2.0.
+         See DeviceManifestTest.HealthHal -->
+    <hal format="hidl" optional="true">
         <name>android.hardware.health</name>
         <version>2.0</version>
         <interface>
diff --git a/compatibility_matrices/compatibility_matrix.5.xml b/compatibility_matrices/compatibility_matrix.5.xml
index 0fb21a7..3642814 100644
--- a/compatibility_matrices/compatibility_matrix.5.xml
+++ b/compatibility_matrices/compatibility_matrix.5.xml
@@ -238,7 +238,10 @@
             <instance>default</instance>
         </interface>
     </hal>
-    <hal format="hidl" optional="false">
+    <!-- Either the AIDL or the HIDL health HAL must exist on the device.
+         If the HIDL health HAL exists, it must be at least version 2.1.
+         See DeviceManifestTest.HealthHal -->
+    <hal format="hidl" optional="true">
         <name>android.hardware.health</name>
         <version>2.1</version>
         <interface>
diff --git a/compatibility_matrices/compatibility_matrix.6.xml b/compatibility_matrices/compatibility_matrix.6.xml
index aee2c51..9c42cb0 100644
--- a/compatibility_matrices/compatibility_matrix.6.xml
+++ b/compatibility_matrices/compatibility_matrix.6.xml
@@ -268,7 +268,10 @@
             <instance>default</instance>
         </interface>
     </hal>
-    <hal format="hidl" optional="false">
+    <!-- Either the AIDL or the HIDL health HAL must exist on the device.
+         If the HIDL health HAL exists, it must be at least version 2.1.
+         See DeviceManifestTest.HealthHal -->
+    <hal format="hidl" optional="true">
         <name>android.hardware.health</name>
         <version>2.1</version>
         <interface>
diff --git a/compatibility_matrices/compatibility_matrix.current.xml b/compatibility_matrices/compatibility_matrix.current.xml
index 27e6b26..594f07b 100644
--- a/compatibility_matrices/compatibility_matrix.current.xml
+++ b/compatibility_matrices/compatibility_matrix.current.xml
@@ -60,6 +60,14 @@
             <regex-instance>.*</regex-instance>
         </interface>
     </hal>
+    <hal format="aidl" optional="true">
+        <name>android.hardware.automotive.evs</name>
+        <interface>
+            <name>IEvsEnumerator</name>
+            <instance>default</instance>
+            <regex-instance>[a-z]+/[0-9]+</regex-instance>
+        </interface>
+    </hal>
     <hal format="hidl" optional="true">
         <name>android.hardware.automotive.evs</name>
         <version>1.0-1</version>
@@ -77,14 +85,6 @@
             <instance>default</instance>
         </interface>
     </hal>
-    <hal format="hidl" optional="true">
-        <name>android.hardware.automotive.sv</name>
-        <version>1.0</version>
-        <interface>
-            <name>ISurroundViewService</name>
-            <instance>default</instance>
-        </interface>
-    </hal>
     <hal format="aidl" optional="true">
         <name>android.hardware.automotive.vehicle</name>
         <interface>
@@ -110,6 +110,7 @@
     </hal>
     <hal format="aidl" optional="true">
         <name>android.hardware.biometrics.face</name>
+        <version>2</version>
         <interface>
             <name>IFace</name>
             <instance>default</instance>
@@ -209,12 +210,16 @@
             <instance>default</instance>
         </interface>
     </hal>
-    <hal format="hidl" optional="true">
-        <name>android.hardware.contexthub</name>
-        <version>1.2</version>
+    <hal format="aidl" optional="true">
+        <name>android.hardware.drm</name>
+        <version>1</version>
         <interface>
-            <name>IContexthub</name>
-            <instance>default</instance>
+            <name>ICryptoFactory</name>
+            <regex-instance>.*</regex-instance>
+        </interface>
+        <interface>
+            <name>IDrmFactory</name>
+            <regex-instance>.*</regex-instance>
         </interface>
     </hal>
     <hal format="hidl" optional="true">
@@ -260,6 +265,22 @@
             <instance>default</instance>
         </interface>
     </hal>
+    <hal format="aidl" optional="true">
+        <name>android.hardware.gnss.visibility_control</name>
+        <version>1</version>
+        <interface>
+            <name>IGnssVisibilityControl</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="aidl" optional="true">
+        <name>android.hardware.gnss.measurement_corrections</name>
+        <version>1</version>
+        <interface>
+            <name>IMeasurementCorrectionsInterface</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
     <hal format="hidl" optional="false">
         <name>android.hardware.graphics.allocator</name>
         <!-- New, non-Go devices should use 4.0, tested in vts_treble_vintf_vendor_test -->
@@ -316,7 +337,7 @@
     </hal>
     <hal format="aidl" optional="true">
         <name>android.hardware.identity</name>
-        <version>1-3</version>
+        <version>1-4</version>
         <interface>
             <name>IIdentityCredentialStore</name>
             <instance>default</instance>
@@ -337,9 +358,9 @@
             <instance>default</instance>
         </interface>
     </hal>
-    <hal format="hidl" optional="true">
+    <hal format="aidl" optional="true">
         <name>android.hardware.ir</name>
-        <version>1.0</version>
+        <version>1</version>
         <interface>
             <name>IConsumerIr</name>
             <instance>default</instance>
@@ -393,6 +414,7 @@
         <interface>
             <name>IRemotelyProvisionedComponent</name>
             <instance>default</instance>
+            <instance>strongbox</instance>
         </interface>
     </hal>
     <hal format="aidl" optional="true">
@@ -442,7 +464,7 @@
     </hal>
     <hal format="aidl" optional="true">
         <name>android.hardware.neuralnetworks</name>
-        <version>1-3</version>
+        <version>1-4</version>
         <interface>
             <name>IDevice</name>
             <regex-instance>.*</regex-instance>
@@ -626,6 +648,13 @@
             <instance>strongbox</instance>
         </interface>
     </hal>
+    <hal format="aidl" optional="true">
+        <name>android.hardware.sensors</name>
+        <interface>
+            <name>ISensors</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
     <hal format="hidl" optional="true">
         <name>android.hardware.sensors</name>
         <version>1.0</version>
@@ -667,7 +696,7 @@
             <instance>default</instance>
         </interface>
     </hal>
-    <hal format="hidl" optional="true">
+    <hal format="hidl" optional="false">
         <name>android.hardware.thermal</name>
         <version>2.0</version>
         <interface>
@@ -757,7 +786,7 @@
     </hal>
     <hal format="hidl" optional="true">
         <name>android.hardware.wifi</name>
-        <version>1.3-5</version>
+        <version>1.3-6</version>
         <interface>
             <name>IWifi</name>
             <instance>default</instance>
diff --git a/compatibility_matrices/exclude/fcm_exclude.cpp b/compatibility_matrices/exclude/fcm_exclude.cpp
index 2aa4bb2..414c502 100644
--- a/compatibility_matrices/exclude/fcm_exclude.cpp
+++ b/compatibility_matrices/exclude/fcm_exclude.cpp
@@ -56,6 +56,7 @@
             "android.hardware.common",
             "android.hardware.common.fmq",
             "android.hardware.graphics.common",
+            "android.hardware.input.common",
             "android.hardware.keymaster",
             "android.hardware.radio",
             "android.hardware.uwb.fira_android",
diff --git a/contexthub/aidl/aidl_api/android.hardware.contexthub/current/android/hardware/contexthub/HostEndpointInfo.aidl b/contexthub/aidl/aidl_api/android.hardware.contexthub/current/android/hardware/contexthub/HostEndpointInfo.aidl
index e7dcbc7..84e8531 100644
--- a/contexthub/aidl/aidl_api/android.hardware.contexthub/current/android/hardware/contexthub/HostEndpointInfo.aidl
+++ b/contexthub/aidl/aidl_api/android.hardware.contexthub/current/android/hardware/contexthub/HostEndpointInfo.aidl
@@ -40,7 +40,7 @@
   @nullable String attributionTag;
   @Backing(type="int") @VintfStability
   enum Type {
-    TYPE_FRAMEWORK = 1,
-    TYPE_APP = 2,
+    FRAMEWORK = 1,
+    APP = 2,
   }
 }
diff --git a/contexthub/aidl/aidl_api/android.hardware.contexthub/current/android/hardware/contexthub/IContextHub.aidl b/contexthub/aidl/aidl_api/android.hardware.contexthub/current/android/hardware/contexthub/IContextHub.aidl
index facce4b..f0676be 100644
--- a/contexthub/aidl/aidl_api/android.hardware.contexthub/current/android/hardware/contexthub/IContextHub.aidl
+++ b/contexthub/aidl/aidl_api/android.hardware.contexthub/current/android/hardware/contexthub/IContextHub.aidl
@@ -35,14 +35,15 @@
 @VintfStability
 interface IContextHub {
   List<android.hardware.contexthub.ContextHubInfo> getContextHubs();
-  boolean loadNanoapp(in int contextHubId, in android.hardware.contexthub.NanoappBinary appBinary, in int transactionId);
-  boolean unloadNanoapp(in int contextHubId, in long appId, in int transactionId);
-  boolean disableNanoapp(in int contextHubId, in long appId, in int transactionId);
-  boolean enableNanoapp(in int contextHubId, in long appId, in int transactionId);
+  void loadNanoapp(in int contextHubId, in android.hardware.contexthub.NanoappBinary appBinary, in int transactionId);
+  void unloadNanoapp(in int contextHubId, in long appId, in int transactionId);
+  void disableNanoapp(in int contextHubId, in long appId, in int transactionId);
+  void enableNanoapp(in int contextHubId, in long appId, in int transactionId);
   void onSettingChanged(in android.hardware.contexthub.Setting setting, in boolean enabled);
-  boolean queryNanoapps(in int contextHubId);
-  boolean registerCallback(in int contextHubId, in android.hardware.contexthub.IContextHubCallback cb);
-  boolean sendMessageToHub(in int contextHubId, in android.hardware.contexthub.ContextHubMessage message);
+  void queryNanoapps(in int contextHubId);
+  void registerCallback(in int contextHubId, in android.hardware.contexthub.IContextHubCallback cb);
+  void sendMessageToHub(in int contextHubId, in android.hardware.contexthub.ContextHubMessage message);
   void onHostEndpointConnected(in android.hardware.contexthub.HostEndpointInfo hostEndpointInfo);
   void onHostEndpointDisconnected(char hostEndpointId);
+  const int EX_CONTEXT_HUB_UNSPECIFIED = -1;
 }
diff --git a/contexthub/aidl/android/hardware/contexthub/ContextHubMessage.aidl b/contexthub/aidl/android/hardware/contexthub/ContextHubMessage.aidl
index 867da2f..95d478e 100644
--- a/contexthub/aidl/android/hardware/contexthub/ContextHubMessage.aidl
+++ b/contexthub/aidl/android/hardware/contexthub/ContextHubMessage.aidl
@@ -32,10 +32,14 @@
      */
     char hostEndPoint;
 
-    /** The type of this message */
+    /**
+     * The type of this message payload, defined by the communication endpoints (i.e.
+     * either the nanoapp or the host endpoint). This value can be used to distinguish
+     * the handling of messageBody (e.g. for decoding).
+     */
     int messageType;
 
-    /** The payload containing the message */
+    /** The payload containing the message. */
     byte[] messageBody;
 
     /**
diff --git a/contexthub/aidl/android/hardware/contexthub/HostEndpointInfo.aidl b/contexthub/aidl/android/hardware/contexthub/HostEndpointInfo.aidl
index 40a231d..a9d6657 100644
--- a/contexthub/aidl/android/hardware/contexthub/HostEndpointInfo.aidl
+++ b/contexthub/aidl/android/hardware/contexthub/HostEndpointInfo.aidl
@@ -37,12 +37,12 @@
     @Backing(type="int")
     enum Type {
         /**
-           This endpoint is from the Android framework, where packageName and attributionTag may be
-           empty.
+         * This endpoint is from the Android framework, where packageName and attributionTag may be
+         * empty.
          */
-        TYPE_FRAMEWORK = 1,
+        FRAMEWORK = 1,
 
         /** This endpoint is an Android app. */
-        TYPE_APP = 2,
+        APP = 2,
     }
 }
diff --git a/contexthub/aidl/android/hardware/contexthub/IContextHub.aidl b/contexthub/aidl/android/hardware/contexthub/IContextHub.aidl
index 33d241a..2135041 100644
--- a/contexthub/aidl/android/hardware/contexthub/IContextHub.aidl
+++ b/contexthub/aidl/android/hardware/contexthub/IContextHub.aidl
@@ -52,9 +52,12 @@
      * @param appBinary The nanoapp binary with header
      * @param transactionId The transaction ID associated with this request
      *
-     * @return The return code
+     * @throws EX_ILLEGAL_ARGUMENT if any of the arguments are invalid.
+     *         EX_UNSUPPORTED_OPERATION if this functionality is unsupported.
+     *         EX_SERVICE_SPECIFIC on error
+     *         - EX_CONTEXT_HUB_UNSPECIFIED if the request failed for other reasons.
      */
-    boolean loadNanoapp(in int contextHubId, in NanoappBinary appBinary, in int transactionId);
+    void loadNanoapp(in int contextHubId, in NanoappBinary appBinary, in int transactionId);
 
     /**
      * Invokes the nanoapp's deinitialization "end()" entrypoint, and unloads the nanoapp.
@@ -69,9 +72,12 @@
      * @param appId The unique ID of the nanoapp
      * @param transactionId The transaction ID associated with this request
      *
-     * @return The return code
+     * @throws EX_ILLEGAL_ARGUMENT if any of the arguments are invalid.
+     *         EX_UNSUPPORTED_OPERATION if this functionality is unsupported.
+     *         EX_SERVICE_SPECIFIC on error
+     *         - EX_CONTEXT_HUB_UNSPECIFIED if the request failed for other reasons.
      */
-    boolean unloadNanoapp(in int contextHubId, in long appId, in int transactionId);
+    void unloadNanoapp(in int contextHubId, in long appId, in int transactionId);
 
     /**
      * Disables a nanoapp by invoking the nanoapp's "end()" entrypoint, but does not unload the
@@ -87,9 +93,12 @@
      * @param appId The unique ID of the nanoapp
      * @param transactionId The transaction ID associated with this request
      *
-     * @return The return code
+     * @throws EX_ILLEGAL_ARGUMENT if any of the arguments are invalid.
+     *         EX_UNSUPPORTED_OPERATION if this functionality is unsupported.
+     *         EX_SERVICE_SPECIFIC on error
+     *         - EX_CONTEXT_HUB_UNSPECIFIED if the request failed for other reasons.
      */
-    boolean disableNanoapp(in int contextHubId, in long appId, in int transactionId);
+    void disableNanoapp(in int contextHubId, in long appId, in int transactionId);
 
     /**
      * Enables a nanoapp by invoking the nanoapp's initialization "start()" entrypoint.
@@ -104,9 +113,12 @@
      * @param appId appIdentifier returned by the HAL
      * @param message   message to be sent
      *
-     * @return true on success
+     * @throws EX_ILLEGAL_ARGUMENT if any of the arguments are invalid.
+     *         EX_UNSUPPORTED_OPERATION if this functionality is unsupported.
+     *         EX_SERVICE_SPECIFIC on error
+     *         - EX_CONTEXT_HUB_UNSPECIFIED if the request failed for other reasons.
      */
-    boolean enableNanoapp(in int contextHubId, in long appId, in int transactionId);
+    void enableNanoapp(in int contextHubId, in long appId, in int transactionId);
 
     /**
      * Notification sent by the framework to indicate that the user has changed a setting.
@@ -124,9 +136,12 @@
      *
      * @param contextHubId The identifier of the Context Hub
      *
-     * @return true on success
+     * @throws EX_ILLEGAL_ARGUMENT if any of the arguments are invalid.
+     *         EX_UNSUPPORTED_OPERATION if this functionality is unsupported.
+     *         EX_SERVICE_SPECIFIC on error
+     *         - EX_CONTEXT_HUB_UNSPECIFIED if the request failed for other reasons.
      */
-    boolean queryNanoapps(in int contextHubId);
+    void queryNanoapps(in int contextHubId);
 
     /**
      * Register a callback for the HAL implementation to send asynchronous messages to the service
@@ -138,10 +153,11 @@
      * @param contextHubId The identifier of the Context Hub
      * @param callback an implementation of the IContextHubCallbacks
      *
-     * @return true on success
-     *
+     * @throws EX_ILLEGAL_ARGUMENT if any of the arguments are invalid.
+     *         EX_SERVICE_SPECIFIC on error
+     *         - EX_CONTEXT_HUB_UNSPECIFIED if the request failed for other reasons.
      */
-    boolean registerCallback(in int contextHubId, in IContextHubCallback cb);
+    void registerCallback(in int contextHubId, in IContextHubCallback cb);
 
     /**
      * Sends a message targeted to a nanoapp to the Context Hub.
@@ -149,9 +165,11 @@
      * @param contextHubId The identifier of the Context Hub
      * @param message The message to be sent
      *
-     * @return true on success
+     * @throws EX_ILLEGAL_ARGUMENT if any of the arguments are invalid.
+     *         EX_SERVICE_SPECIFIC on error
+     *         - EX_CONTEXT_HUB_UNSPECIFIED if the request failed for other reasons.
      */
-    boolean sendMessageToHub(in int contextHubId, in ContextHubMessage message);
+    void sendMessageToHub(in int contextHubId, in ContextHubMessage message);
 
     /**
      * Invoked when a host endpoint has connected with the ContextHubService.
@@ -173,8 +191,13 @@
      *
      * @param hostEndPointId The ID of the host that has disconnected.
      *
-     * @return Status::ok on success
-     *         EX_ILLEGAL_ARGUMENT if hostEndpointId is not associated with a connected host.
+     * @throws EX_ILLEGAL_ARGUMENT if hostEndpointId is not associated with a connected host.
      */
     void onHostEndpointDisconnected(char hostEndpointId);
+
+    /**
+     * Error codes that are used as service specific errors with the AIDL return
+     * value EX_SERVICE_SPECIFIC.
+     */
+    const int EX_CONTEXT_HUB_UNSPECIFIED = -1;
 }
diff --git a/contexthub/aidl/default/ContextHub.cpp b/contexthub/aidl/default/ContextHub.cpp
index 6da690d..4c23cbc 100644
--- a/contexthub/aidl/default/ContextHub.cpp
+++ b/contexthub/aidl/default/ContextHub.cpp
@@ -21,7 +21,9 @@
 namespace hardware {
 namespace contexthub {
 
-::ndk::ScopedAStatus ContextHub::getContextHubs(std::vector<ContextHubInfo>* out_contextHubInfos) {
+using ::ndk::ScopedAStatus;
+
+ScopedAStatus ContextHub::getContextHubs(std::vector<ContextHubInfo>* out_contextHubInfos) {
     ContextHubInfo hub = {};
     hub.name = "Mock Context Hub";
     hub.vendor = "AOSP";
@@ -39,85 +41,70 @@
 }
 
 // We don't expose any nanoapps for the default impl, therefore all nanoapp-related APIs fail.
-::ndk::ScopedAStatus ContextHub::loadNanoapp(int32_t /* in_contextHubId */,
-                                             const NanoappBinary& /* in_appBinary */,
-                                             int32_t /* in_transactionId */, bool* _aidl_return) {
-    *_aidl_return = false;
+ScopedAStatus ContextHub::loadNanoapp(int32_t /* in_contextHubId */,
+                                      const NanoappBinary& /* in_appBinary */,
+                                      int32_t /* in_transactionId */) {
+    return ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+}
+
+ScopedAStatus ContextHub::unloadNanoapp(int32_t /* in_contextHubId */, int64_t /* in_appId */,
+                                        int32_t /* in_transactionId */) {
+    return ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+}
+
+ScopedAStatus ContextHub::disableNanoapp(int32_t /* in_contextHubId */, int64_t /* in_appId */,
+                                         int32_t /* in_transactionId */) {
+    return ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+}
+
+ScopedAStatus ContextHub::enableNanoapp(int32_t /* in_contextHubId */, int64_t /* in_appId */,
+                                        int32_t /* in_transactionId */) {
+    return ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+}
+
+ScopedAStatus ContextHub::onSettingChanged(Setting /* in_setting */, bool /*in_enabled */) {
     return ndk::ScopedAStatus::ok();
 }
 
-::ndk::ScopedAStatus ContextHub::unloadNanoapp(int32_t /* in_contextHubId */,
-                                               int64_t /* in_appId */,
-                                               int32_t /* in_transactionId */, bool* _aidl_return) {
-    *_aidl_return = false;
-    return ndk::ScopedAStatus::ok();
-}
-
-::ndk::ScopedAStatus ContextHub::disableNanoapp(int32_t /* in_contextHubId */,
-                                                int64_t /* in_appId */,
-                                                int32_t /* in_transactionId */,
-                                                bool* _aidl_return) {
-    *_aidl_return = false;
-    return ndk::ScopedAStatus::ok();
-}
-
-::ndk::ScopedAStatus ContextHub::enableNanoapp(int32_t /* in_contextHubId */,
-                                               int64_t /* in_appId */,
-                                               int32_t /* in_transactionId */, bool* _aidl_return) {
-    *_aidl_return = false;
-    return ndk::ScopedAStatus::ok();
-}
-
-::ndk::ScopedAStatus ContextHub::onSettingChanged(Setting /* in_setting */, bool /*in_enabled */) {
-    return ndk::ScopedAStatus::ok();
-}
-
-::ndk::ScopedAStatus ContextHub::queryNanoapps(int32_t in_contextHubId, bool* _aidl_return) {
+ScopedAStatus ContextHub::queryNanoapps(int32_t in_contextHubId) {
     if (in_contextHubId == kMockHubId && mCallback != nullptr) {
         std::vector<NanoappInfo> nanoapps;
         mCallback->handleNanoappInfo(nanoapps);
-        *_aidl_return = true;
+        return ndk::ScopedAStatus::ok();
     } else {
-        *_aidl_return = false;
+        return ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
     }
-
-    return ndk::ScopedAStatus::ok();
 }
 
-::ndk::ScopedAStatus ContextHub::registerCallback(int32_t in_contextHubId,
-                                                  const std::shared_ptr<IContextHubCallback>& in_cb,
-                                                  bool* _aidl_return) {
+ScopedAStatus ContextHub::registerCallback(int32_t in_contextHubId,
+                                           const std::shared_ptr<IContextHubCallback>& in_cb) {
     if (in_contextHubId == kMockHubId) {
         mCallback = in_cb;
-        *_aidl_return = true;
+        return ndk::ScopedAStatus::ok();
     } else {
-        *_aidl_return = false;
+        return ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
     }
-    return ndk::ScopedAStatus::ok();
 }
 
-::ndk::ScopedAStatus ContextHub::sendMessageToHub(int32_t in_contextHubId,
-                                                  const ContextHubMessage& /* in_message */,
-                                                  bool* _aidl_return) {
+ScopedAStatus ContextHub::sendMessageToHub(int32_t in_contextHubId,
+                                           const ContextHubMessage& /* in_message */) {
     if (in_contextHubId == kMockHubId) {
         // Return true here to indicate that the HAL has accepted the message.
         // Successful delivery of the message to a nanoapp should be handled at
         // a higher level protocol.
-        *_aidl_return = true;
+        return ndk::ScopedAStatus::ok();
     } else {
-        *_aidl_return = false;
+        return ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
     }
-
-    return ndk::ScopedAStatus::ok();
 }
 
-::ndk::ScopedAStatus ContextHub::onHostEndpointConnected(const HostEndpointInfo& in_info) {
+ScopedAStatus ContextHub::onHostEndpointConnected(const HostEndpointInfo& in_info) {
     mConnectedHostEndpoints.insert(in_info.hostEndpointId);
 
     return ndk::ScopedAStatus::ok();
 }
 
-::ndk::ScopedAStatus ContextHub::onHostEndpointDisconnected(char16_t in_hostEndpointId) {
+ScopedAStatus ContextHub::onHostEndpointDisconnected(char16_t in_hostEndpointId) {
     if (mConnectedHostEndpoints.count(in_hostEndpointId) > 0) {
         mConnectedHostEndpoints.erase(in_hostEndpointId);
         return ndk::ScopedAStatus::ok();
diff --git a/contexthub/aidl/default/include/contexthub-impl/ContextHub.h b/contexthub/aidl/default/include/contexthub-impl/ContextHub.h
index dd739e6..03d8432 100644
--- a/contexthub/aidl/default/include/contexthub-impl/ContextHub.h
+++ b/contexthub/aidl/default/include/contexthub-impl/ContextHub.h
@@ -28,21 +28,19 @@
 class ContextHub : public BnContextHub {
     ::ndk::ScopedAStatus getContextHubs(std::vector<ContextHubInfo>* out_contextHubInfos) override;
     ::ndk::ScopedAStatus loadNanoapp(int32_t in_contextHubId, const NanoappBinary& in_appBinary,
-                                     int32_t in_transactionId, bool* _aidl_return) override;
+                                     int32_t in_transactionId) override;
     ::ndk::ScopedAStatus unloadNanoapp(int32_t in_contextHubId, int64_t in_appId,
-                                       int32_t in_transactionId, bool* _aidl_return) override;
+                                       int32_t in_transactionId) override;
     ::ndk::ScopedAStatus disableNanoapp(int32_t in_contextHubId, int64_t in_appId,
-                                        int32_t in_transactionId, bool* _aidl_return) override;
+                                        int32_t in_transactionId) override;
     ::ndk::ScopedAStatus enableNanoapp(int32_t in_contextHubId, int64_t in_appId,
-                                       int32_t in_transactionId, bool* _aidl_return) override;
+                                       int32_t in_transactionId) override;
     ::ndk::ScopedAStatus onSettingChanged(Setting in_setting, bool in_enabled) override;
-    ::ndk::ScopedAStatus queryNanoapps(int32_t in_contextHubId, bool* _aidl_return) override;
-    ::ndk::ScopedAStatus registerCallback(int32_t in_contextHubId,
-                                          const std::shared_ptr<IContextHubCallback>& in_cb,
-                                          bool* _aidl_return) override;
+    ::ndk::ScopedAStatus queryNanoapps(int32_t in_contextHubId) override;
+    ::ndk::ScopedAStatus registerCallback(
+            int32_t in_contextHubId, const std::shared_ptr<IContextHubCallback>& in_cb) override;
     ::ndk::ScopedAStatus sendMessageToHub(int32_t in_contextHubId,
-                                          const ContextHubMessage& in_message,
-                                          bool* _aidl_return) override;
+                                          const ContextHubMessage& in_message) override;
     ::ndk::ScopedAStatus onHostEndpointConnected(const HostEndpointInfo& in_info) override;
 
     ::ndk::ScopedAStatus onHostEndpointDisconnected(char16_t in_hostEndpointId) override;
diff --git a/contexthub/aidl/vts/VtsAidlHalContextHubTargetTest.cpp b/contexthub/aidl/vts/VtsAidlHalContextHubTargetTest.cpp
index 392e23c..a47f64e 100644
--- a/contexthub/aidl/vts/VtsAidlHalContextHubTargetTest.cpp
+++ b/contexthub/aidl/vts/VtsAidlHalContextHubTargetTest.cpp
@@ -103,15 +103,12 @@
 };
 
 TEST_P(ContextHubAidl, TestRegisterCallback) {
-    bool success;
     sp<EmptyContextHubCallback> cb = sp<EmptyContextHubCallback>::make();
-    ASSERT_TRUE(contextHub->registerCallback(getHubId(), cb, &success).isOk());
-    ASSERT_TRUE(success);
+    ASSERT_TRUE(contextHub->registerCallback(getHubId(), cb).isOk());
 }
 
 TEST_P(ContextHubAidl, TestRegisterNullCallback) {
-    bool success;
-    ASSERT_TRUE(contextHub->registerCallback(getHubId(), nullptr, &success).isOk());
+    ASSERT_TRUE(contextHub->registerCallback(getHubId(), nullptr).isOk());
 }
 
 // Helper callback that puts the async appInfo callback data into a promise
@@ -140,12 +137,8 @@
 // Calls queryApps() and checks the returned metadata
 TEST_P(ContextHubAidl, TestQueryApps) {
     sp<QueryAppsCallback> cb = sp<QueryAppsCallback>::make();
-    bool success;
-    ASSERT_TRUE(contextHub->registerCallback(getHubId(), cb, &success).isOk());
-    ASSERT_TRUE(success);
-
-    ASSERT_TRUE(contextHub->queryNanoapps(getHubId(), &success).isOk());
-    ASSERT_TRUE(success);
+    ASSERT_TRUE(contextHub->registerCallback(getHubId(), cb).isOk());
+    ASSERT_TRUE(contextHub->queryNanoapps(getHubId()).isOk());
 
     std::vector<NanoappInfo> appInfoList;
     ASSERT_TRUE(waitForCallback(cb->promise.get_future(), &appInfoList));
@@ -197,9 +190,7 @@
   public:
     virtual void SetUp() override {
         ContextHubAidl::SetUp();
-        bool success;
-        ASSERT_TRUE(contextHub->registerCallback(getHubId(), cb, &success).isOk());
-        ASSERT_TRUE(success);
+        ASSERT_TRUE(contextHub->registerCallback(getHubId(), cb).isOk());
     }
 
     sp<TransactionResultCallback> cb = sp<TransactionResultCallback>::make();
@@ -213,9 +204,7 @@
     std::fill(message.messageBody.begin(), message.messageBody.end(), 0);
 
     ALOGD("Sending message to non-existent nanoapp");
-    bool success;
-    ASSERT_TRUE(contextHub->sendMessageToHub(getHubId(), message, &success).isOk());
-    ASSERT_TRUE(success);
+    ASSERT_TRUE(contextHub->sendMessageToHub(getHubId(), message).isOk());
 }
 
 TEST_P(ContextHubTransactionTest, TestLoadEmptyNanoapp) {
@@ -229,9 +218,7 @@
     emptyApp.targetChreApiMinorVersion = 0;
 
     ALOGD("Loading empty nanoapp");
-    bool success;
-    ASSERT_TRUE(contextHub->loadNanoapp(getHubId(), emptyApp, cb->expectedTransactionId, &success)
-                        .isOk());
+    bool success = contextHub->loadNanoapp(getHubId(), emptyApp, cb->expectedTransactionId).isOk();
     if (success) {
         bool transactionSuccess;
         ASSERT_TRUE(waitForCallback(cb->promise.get_future(), &transactionSuccess));
@@ -243,11 +230,9 @@
     cb->expectedTransactionId = 1234;
 
     ALOGD("Unloading nonexistent nanoapp");
-    bool success;
-    ASSERT_TRUE(contextHub
-                        ->unloadNanoapp(getHubId(), kNonExistentAppId, cb->expectedTransactionId,
-                                        &success)
-                        .isOk());
+    bool success =
+            contextHub->unloadNanoapp(getHubId(), kNonExistentAppId, cb->expectedTransactionId)
+                    .isOk();
     if (success) {
         bool transactionSuccess;
         ASSERT_TRUE(waitForCallback(cb->promise.get_future(), &transactionSuccess));
@@ -259,11 +244,9 @@
     cb->expectedTransactionId = 2345;
 
     ALOGD("Enabling nonexistent nanoapp");
-    bool success;
-    ASSERT_TRUE(contextHub
-                        ->enableNanoapp(getHubId(), kNonExistentAppId, cb->expectedTransactionId,
-                                        &success)
-                        .isOk());
+    bool success =
+            contextHub->enableNanoapp(getHubId(), kNonExistentAppId, cb->expectedTransactionId)
+                    .isOk();
     if (success) {
         bool transactionSuccess;
         ASSERT_TRUE(waitForCallback(cb->promise.get_future(), &transactionSuccess));
@@ -275,11 +258,9 @@
     cb->expectedTransactionId = 3456;
 
     ALOGD("Disabling nonexistent nanoapp");
-    bool success;
-    ASSERT_TRUE(contextHub
-                        ->disableNanoapp(getHubId(), kNonExistentAppId, cb->expectedTransactionId,
-                                         &success)
-                        .isOk());
+    bool success =
+            contextHub->disableNanoapp(getHubId(), kNonExistentAppId, cb->expectedTransactionId)
+                    .isOk();
     if (success) {
         bool transactionSuccess;
         ASSERT_TRUE(waitForCallback(cb->promise.get_future(), &transactionSuccess));
@@ -290,16 +271,13 @@
 void ContextHubAidl::testSettingChanged(Setting setting) {
     // In VTS, we only test that sending the values doesn't cause things to blow up - GTS tests
     // verify the expected E2E behavior in CHRE
-    bool success;
     sp<EmptyContextHubCallback> cb = sp<EmptyContextHubCallback>::make();
-    ASSERT_TRUE(contextHub->registerCallback(getHubId(), cb, &success).isOk());
-    ASSERT_TRUE(success);
+    ASSERT_TRUE(contextHub->registerCallback(getHubId(), cb).isOk());
 
     ASSERT_TRUE(contextHub->onSettingChanged(setting, true /* enabled */).isOk());
     ASSERT_TRUE(contextHub->onSettingChanged(setting, false /* enabled */).isOk());
 
-    ASSERT_TRUE(contextHub->registerCallback(getHubId(), nullptr, &success).isOk());
-    ASSERT_TRUE(success);
+    ASSERT_TRUE(contextHub->registerCallback(getHubId(), nullptr).isOk());
 }
 
 TEST_P(ContextHubAidl, TestOnLocationSettingChanged) {
diff --git a/current.txt b/current.txt
index 1dbf5ab..1fedaa0 100644
--- a/current.txt
+++ b/current.txt
@@ -907,6 +907,7 @@
 # ABI preserving changes to HALs during Android T
 62ace52d9c3ff1f60f94118557a2aaf0b953513e59dcd34d5f94ae28d4c7e780 android.hardware.fastboot@1.0::IFastboot
 f767a132ef28275294db15353f14f3876a4048770751931a77d038d4228f2cb7 android.hardware.graphics.composer@2.4::IComposerClient
+d0fb32f3ddeb9af7115ab32905225ea69b930d2472be8e9610f0cf136c15aefb android.hardware.keymaster@4.0::IKeymasterDevice # b/210424594
 ca62a2a95d173ed323309e5e00f653ad3cceec82a6e5e4976a249cb5aafe2515 android.hardware.neuralnetworks@1.2::types
 fa76bced6b1b71c40fc706c508a9011284c57f57831cd0cf5f45653ed4ea463e android.hardware.neuralnetworks@1.3::types
 
diff --git a/drm/aidl/Android.bp b/drm/aidl/Android.bp
new file mode 100644
index 0000000..d8500ec
--- /dev/null
+++ b/drm/aidl/Android.bp
@@ -0,0 +1,32 @@
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "hardware_interfaces_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["hardware_interfaces_license"],
+}
+
+aidl_interface {
+    name: "android.hardware.drm",
+    vendor_available: true,
+    srcs: ["android/hardware/drm/*.aidl"],
+    stability: "vintf",
+    imports: [
+        "android.hardware.common-V2",
+    ],
+    backend: {
+        cpp: {
+            enabled: false,
+        },
+        java: {
+            sdk_version: "module_current",
+        },
+        ndk: {
+            vndk: {
+                enabled: true,
+            },
+            min_sdk_version: "current",
+        },
+    },
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/BufferType.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/BufferType.aidl
new file mode 100644
index 0000000..b6ec34d
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/BufferType.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@Backing(type="int") @VintfStability
+enum BufferType {
+  SHARED_MEMORY = 0,
+  NATIVE_HANDLE = 1,
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/DecryptResult.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/DecryptResult.aidl
new file mode 100644
index 0000000..d2b48d2
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/DecryptResult.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@VintfStability
+parcelable DecryptResult {
+  int bytesWritten;
+  String detailedError;
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/DestinationBuffer.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/DestinationBuffer.aidl
new file mode 100644
index 0000000..4f2d133
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/DestinationBuffer.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@VintfStability
+parcelable DestinationBuffer {
+  android.hardware.drm.BufferType type;
+  android.hardware.drm.SharedBuffer nonsecureMemory;
+  android.hardware.common.NativeHandle secureMemory;
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/DrmMetric.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/DrmMetric.aidl
new file mode 100644
index 0000000..c78dff0
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/DrmMetric.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@VintfStability
+parcelable DrmMetric {
+  String name;
+  List<android.hardware.drm.DrmMetricNamedValue> attributes;
+  List<android.hardware.drm.DrmMetricNamedValue> values;
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/DrmMetricGroup.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/DrmMetricGroup.aidl
new file mode 100644
index 0000000..4128eaa
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/DrmMetricGroup.aidl
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@VintfStability
+parcelable DrmMetricGroup {
+  List<android.hardware.drm.DrmMetric> metrics;
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/DrmMetricNamedValue.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/DrmMetricNamedValue.aidl
new file mode 100644
index 0000000..76ec35c
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/DrmMetricNamedValue.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@VintfStability
+parcelable DrmMetricNamedValue {
+  String name;
+  android.hardware.drm.DrmMetricValue value;
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/DrmMetricValue.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/DrmMetricValue.aidl
new file mode 100644
index 0000000..8064913
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/DrmMetricValue.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@VintfStability
+union DrmMetricValue {
+  long int64Value;
+  double doubleValue;
+  String stringValue;
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/EventType.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/EventType.aidl
new file mode 100644
index 0000000..80ebb28
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/EventType.aidl
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@Backing(type="int") @VintfStability
+enum EventType {
+  PROVISION_REQUIRED = 0,
+  KEY_NEEDED = 1,
+  KEY_EXPIRED = 2,
+  VENDOR_DEFINED = 3,
+  SESSION_RECLAIMED = 4,
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/HdcpLevel.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/HdcpLevel.aidl
new file mode 100644
index 0000000..5704fb0
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/HdcpLevel.aidl
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@Backing(type="int") @VintfStability
+enum HdcpLevel {
+  HDCP_UNKNOWN = 0,
+  HDCP_NONE = 1,
+  HDCP_V1 = 2,
+  HDCP_V2 = 3,
+  HDCP_V2_1 = 4,
+  HDCP_V2_2 = 5,
+  HDCP_NO_OUTPUT = 6,
+  HDCP_V2_3 = 7,
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/HdcpLevels.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/HdcpLevels.aidl
new file mode 100644
index 0000000..a6f86ac
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/HdcpLevels.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@VintfStability
+parcelable HdcpLevels {
+  android.hardware.drm.HdcpLevel connectedLevel;
+  android.hardware.drm.HdcpLevel maxLevel;
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/ICryptoFactory.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/ICryptoFactory.aidl
new file mode 100644
index 0000000..0d4296e
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/ICryptoFactory.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@VintfStability
+interface ICryptoFactory {
+  @nullable android.hardware.drm.ICryptoPlugin createPlugin(in android.hardware.drm.Uuid uuid, in byte[] initData);
+  boolean isCryptoSchemeSupported(in android.hardware.drm.Uuid uuid);
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/ICryptoPlugin.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/ICryptoPlugin.aidl
new file mode 100644
index 0000000..2224795
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/ICryptoPlugin.aidl
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@VintfStability
+interface ICryptoPlugin {
+  android.hardware.drm.DecryptResult decrypt(in boolean secure, in byte[] keyId, in byte[] iv, in android.hardware.drm.Mode mode, in android.hardware.drm.Pattern pattern, in android.hardware.drm.SubSample[] subSamples, in android.hardware.drm.SharedBuffer source, in long offset, in android.hardware.drm.DestinationBuffer destination);
+  List<android.hardware.drm.LogMessage> getLogMessages();
+  void notifyResolution(in int width, in int height);
+  boolean requiresSecureDecoderComponent(in String mime);
+  void setMediaDrmSession(in byte[] sessionId);
+  void setSharedBufferBase(in android.hardware.common.Ashmem base, in int bufferId);
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/IDrmFactory.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/IDrmFactory.aidl
new file mode 100644
index 0000000..af48737
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/IDrmFactory.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@VintfStability
+interface IDrmFactory {
+  @nullable android.hardware.drm.IDrmPlugin createPlugin(in android.hardware.drm.Uuid uuid, in String appPackageName);
+  List<android.hardware.drm.Uuid> getSupportedCryptoSchemes();
+  boolean isContentTypeSupported(in String mimeType);
+  boolean isCryptoSchemeSupported(in android.hardware.drm.Uuid uuid, in String mimeType, in android.hardware.drm.SecurityLevel securityLevel);
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/IDrmPlugin.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/IDrmPlugin.aidl
new file mode 100644
index 0000000..5f839d7
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/IDrmPlugin.aidl
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@VintfStability
+interface IDrmPlugin {
+  void closeSession(in byte[] sessionId);
+  byte[] decrypt(in byte[] sessionId, in byte[] keyId, in byte[] input, in byte[] iv);
+  byte[] encrypt(in byte[] sessionId, in byte[] keyId, in byte[] input, in byte[] iv);
+  android.hardware.drm.HdcpLevels getHdcpLevels();
+  android.hardware.drm.KeyRequest getKeyRequest(in byte[] scope, in byte[] initData, in String mimeType, in android.hardware.drm.KeyType keyType, in android.hardware.drm.KeyValue[] optionalParameters);
+  List<android.hardware.drm.LogMessage> getLogMessages();
+  List<android.hardware.drm.DrmMetricGroup> getMetrics();
+  android.hardware.drm.NumberOfSessions getNumberOfSessions();
+  List<android.hardware.drm.KeySetId> getOfflineLicenseKeySetIds();
+  android.hardware.drm.OfflineLicenseState getOfflineLicenseState(in android.hardware.drm.KeySetId keySetId);
+  byte[] getPropertyByteArray(in String propertyName);
+  String getPropertyString(in String propertyName);
+  android.hardware.drm.ProvisionRequest getProvisionRequest(in String certificateType, in String certificateAuthority);
+  android.hardware.drm.SecureStop getSecureStop(in android.hardware.drm.SecureStopId secureStopId);
+  List<android.hardware.drm.SecureStopId> getSecureStopIds();
+  List<android.hardware.drm.SecureStop> getSecureStops();
+  android.hardware.drm.SecurityLevel getSecurityLevel(in byte[] sessionId);
+  byte[] openSession(in android.hardware.drm.SecurityLevel securityLevel);
+  android.hardware.drm.KeySetId provideKeyResponse(in byte[] scope, in byte[] response);
+  android.hardware.drm.ProvideProvisionResponseResult provideProvisionResponse(in byte[] response);
+  List<android.hardware.drm.KeyValue> queryKeyStatus(in byte[] sessionId);
+  void releaseAllSecureStops();
+  void releaseSecureStop(in android.hardware.drm.SecureStopId secureStopId);
+  void releaseSecureStops(in android.hardware.drm.OpaqueData ssRelease);
+  void removeAllSecureStops();
+  void removeKeys(in byte[] sessionId);
+  void removeOfflineLicense(in android.hardware.drm.KeySetId keySetId);
+  void removeSecureStop(in android.hardware.drm.SecureStopId secureStopId);
+  boolean requiresSecureDecoder(in String mime, in android.hardware.drm.SecurityLevel level);
+  boolean requiresSecureDecoderDefault(in String mime);
+  void restoreKeys(in byte[] sessionId, in android.hardware.drm.KeySetId keySetId);
+  void setCipherAlgorithm(in byte[] sessionId, in String algorithm);
+  void setListener(in android.hardware.drm.IDrmPluginListener listener);
+  void setMacAlgorithm(in byte[] sessionId, in String algorithm);
+  void setPlaybackId(in byte[] sessionId, in String playbackId);
+  void setPropertyByteArray(in String propertyName, in byte[] value);
+  void setPropertyString(in String propertyName, in String value);
+  byte[] sign(in byte[] sessionId, in byte[] keyId, in byte[] message);
+  byte[] signRSA(in byte[] sessionId, in String algorithm, in byte[] message, in byte[] wrappedkey);
+  boolean verify(in byte[] sessionId, in byte[] keyId, in byte[] message, in byte[] signature);
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/IDrmPluginListener.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/IDrmPluginListener.aidl
new file mode 100644
index 0000000..0a4b4b7
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/IDrmPluginListener.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@VintfStability
+interface IDrmPluginListener {
+  oneway void onEvent(in android.hardware.drm.EventType eventType, in byte[] sessionId, in byte[] data);
+  oneway void onExpirationUpdate(in byte[] sessionId, in long expiryTimeInMS);
+  oneway void onKeysChange(in byte[] sessionId, in android.hardware.drm.KeyStatus[] keyStatusList, in boolean hasNewUsableKey);
+  oneway void onSessionLostState(in byte[] sessionId);
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/KeyRequest.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/KeyRequest.aidl
new file mode 100644
index 0000000..267f532
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/KeyRequest.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@VintfStability
+parcelable KeyRequest {
+  byte[] request;
+  android.hardware.drm.KeyRequestType requestType;
+  String defaultUrl;
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/KeyRequestType.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/KeyRequestType.aidl
new file mode 100644
index 0000000..34b9615
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/KeyRequestType.aidl
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@Backing(type="int") @VintfStability
+enum KeyRequestType {
+  INITIAL = 0,
+  RENEWAL = 1,
+  RELEASE = 2,
+  UNKNOWN = 3,
+  NONE = 4,
+  UPDATE = 5,
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/KeySetId.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/KeySetId.aidl
new file mode 100644
index 0000000..58dfe1a
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/KeySetId.aidl
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@VintfStability
+parcelable KeySetId {
+  byte[] keySetId;
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/KeyStatus.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/KeyStatus.aidl
new file mode 100644
index 0000000..53ab70f
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/KeyStatus.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@VintfStability
+parcelable KeyStatus {
+  byte[] keyId;
+  android.hardware.drm.KeyStatusType type;
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/KeyStatusType.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/KeyStatusType.aidl
new file mode 100644
index 0000000..e88d388
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/KeyStatusType.aidl
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@Backing(type="int") @VintfStability
+enum KeyStatusType {
+  USABLE = 0,
+  EXPIRED = 1,
+  OUTPUTNOTALLOWED = 2,
+  STATUSPENDING = 3,
+  INTERNALERROR = 4,
+  USABLEINFUTURE = 5,
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/KeyType.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/KeyType.aidl
new file mode 100644
index 0000000..7a9d633
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/KeyType.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@Backing(type="int") @VintfStability
+enum KeyType {
+  OFFLINE = 0,
+  STREAMING = 1,
+  RELEASE = 2,
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/KeyValue.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/KeyValue.aidl
new file mode 100644
index 0000000..35d7b77
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/KeyValue.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@VintfStability
+parcelable KeyValue {
+  String key;
+  String value;
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/LogMessage.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/LogMessage.aidl
new file mode 100644
index 0000000..93f76e1
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/LogMessage.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@VintfStability
+parcelable LogMessage {
+  long timeMs;
+  android.hardware.drm.LogPriority priority;
+  String message;
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/LogPriority.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/LogPriority.aidl
new file mode 100644
index 0000000..83362c3
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/LogPriority.aidl
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@Backing(type="int") @VintfStability
+enum LogPriority {
+  UNKNOWN = 0,
+  DEFAULT = 1,
+  VERBOSE = 2,
+  DEBUG = 3,
+  INFO = 4,
+  WARN = 5,
+  ERROR = 6,
+  FATAL = 7,
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/Mode.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/Mode.aidl
new file mode 100644
index 0000000..7379774
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/Mode.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@Backing(type="int") @VintfStability
+enum Mode {
+  UNENCRYPTED = 0,
+  AES_CTR = 1,
+  AES_CBC_CTS = 2,
+  AES_CBC = 3,
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/NumberOfSessions.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/NumberOfSessions.aidl
new file mode 100644
index 0000000..a421125
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/NumberOfSessions.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@VintfStability
+parcelable NumberOfSessions {
+  int currentSessions;
+  int maxSessions;
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/OfflineLicenseState.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/OfflineLicenseState.aidl
new file mode 100644
index 0000000..629564d
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/OfflineLicenseState.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@Backing(type="int") @VintfStability
+enum OfflineLicenseState {
+  UNKNOWN = 0,
+  USABLE = 1,
+  INACTIVE = 2,
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/OpaqueData.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/OpaqueData.aidl
new file mode 100644
index 0000000..3085889
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/OpaqueData.aidl
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@VintfStability
+parcelable OpaqueData {
+  byte[] opaqueData;
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/Pattern.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/Pattern.aidl
new file mode 100644
index 0000000..b01562e
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/Pattern.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@VintfStability
+parcelable Pattern {
+  int encryptBlocks;
+  int skipBlocks;
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/ProvideProvisionResponseResult.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/ProvideProvisionResponseResult.aidl
new file mode 100644
index 0000000..827de59
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/ProvideProvisionResponseResult.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@VintfStability
+parcelable ProvideProvisionResponseResult {
+  byte[] certificate;
+  byte[] wrappedKey;
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/ProvisionRequest.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/ProvisionRequest.aidl
new file mode 100644
index 0000000..84c5662
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/ProvisionRequest.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@VintfStability
+parcelable ProvisionRequest {
+  byte[] request;
+  String defaultUrl;
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/SecureStop.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/SecureStop.aidl
new file mode 100644
index 0000000..81d2dfe
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/SecureStop.aidl
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@VintfStability
+parcelable SecureStop {
+  byte[] opaqueData;
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/SecureStopId.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/SecureStopId.aidl
new file mode 100644
index 0000000..2b904c8
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/SecureStopId.aidl
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@VintfStability
+parcelable SecureStopId {
+  byte[] secureStopId;
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/SecurityLevel.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/SecurityLevel.aidl
new file mode 100644
index 0000000..65b2b9d
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/SecurityLevel.aidl
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@Backing(type="int") @VintfStability
+enum SecurityLevel {
+  UNKNOWN = 0,
+  SW_SECURE_CRYPTO = 1,
+  SW_SECURE_DECODE = 2,
+  HW_SECURE_CRYPTO = 3,
+  HW_SECURE_DECODE = 4,
+  HW_SECURE_ALL = 5,
+  DEFAULT = 6,
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/SharedBuffer.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/SharedBuffer.aidl
new file mode 100644
index 0000000..973ef0d
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/SharedBuffer.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@VintfStability
+parcelable SharedBuffer {
+  int bufferId;
+  long offset;
+  long size;
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/Status.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/Status.aidl
new file mode 100644
index 0000000..c640689
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/Status.aidl
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@Backing(type="int") @VintfStability
+enum Status {
+  OK = 0,
+  ERROR_DRM_NO_LICENSE = 1,
+  ERROR_DRM_LICENSE_EXPIRED = 2,
+  ERROR_DRM_SESSION_NOT_OPENED = 3,
+  ERROR_DRM_CANNOT_HANDLE = 4,
+  ERROR_DRM_INVALID_STATE = 5,
+  BAD_VALUE = 6,
+  ERROR_DRM_NOT_PROVISIONED = 7,
+  ERROR_DRM_RESOURCE_BUSY = 8,
+  ERROR_DRM_INSUFFICIENT_OUTPUT_PROTECTION = 9,
+  ERROR_DRM_DEVICE_REVOKED = 10,
+  ERROR_DRM_DECRYPT = 11,
+  ERROR_DRM_UNKNOWN = 12,
+  ERROR_DRM_INSUFFICIENT_SECURITY = 13,
+  ERROR_DRM_FRAME_TOO_LARGE = 14,
+  ERROR_DRM_SESSION_LOST_STATE = 15,
+  ERROR_DRM_RESOURCE_CONTENTION = 16,
+  CANNOT_DECRYPT_ZERO_SUBSAMPLES = 17,
+  CRYPTO_LIBRARY_ERROR = 18,
+  GENERAL_OEM_ERROR = 19,
+  GENERAL_PLUGIN_ERROR = 20,
+  INIT_DATA_INVALID = 21,
+  KEY_NOT_LOADED = 22,
+  LICENSE_PARSE_ERROR = 23,
+  LICENSE_POLICY_ERROR = 24,
+  LICENSE_RELEASE_ERROR = 25,
+  LICENSE_REQUEST_REJECTED = 26,
+  LICENSE_RESTORE_ERROR = 27,
+  LICENSE_STATE_ERROR = 28,
+  MALFORMED_CERTIFICATE = 29,
+  MEDIA_FRAMEWORK_ERROR = 30,
+  MISSING_CERTIFICATE = 31,
+  PROVISIONING_CERTIFICATE_ERROR = 32,
+  PROVISIONING_CONFIGURATION_ERROR = 33,
+  PROVISIONING_PARSE_ERROR = 34,
+  PROVISIONING_REQUEST_REJECTED = 35,
+  RETRYABLE_PROVISIONING_ERROR = 36,
+  SECURE_STOP_RELEASE_ERROR = 37,
+  STORAGE_READ_FAILURE = 38,
+  STORAGE_WRITE_FAILURE = 39,
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/SubSample.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/SubSample.aidl
new file mode 100644
index 0000000..57d815e
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/SubSample.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@VintfStability
+parcelable SubSample {
+  int numBytesOfClearData;
+  int numBytesOfEncryptedData;
+}
diff --git a/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/Uuid.aidl b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/Uuid.aidl
new file mode 100644
index 0000000..ec2eb16
--- /dev/null
+++ b/drm/aidl/aidl_api/android.hardware.drm/current/android/hardware/drm/Uuid.aidl
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.drm;
+@VintfStability
+parcelable Uuid {
+  byte[] uuid;
+}
diff --git a/drm/aidl/android/hardware/drm/BufferType.aidl b/drm/aidl/android/hardware/drm/BufferType.aidl
new file mode 100644
index 0000000..089c950
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/BufferType.aidl
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+@VintfStability
+@Backing(type="int")
+enum BufferType {
+    SHARED_MEMORY = 0,
+    NATIVE_HANDLE = 1,
+}
diff --git a/drm/aidl/android/hardware/drm/DecryptResult.aidl b/drm/aidl/android/hardware/drm/DecryptResult.aidl
new file mode 100644
index 0000000..17e939b
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/DecryptResult.aidl
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+/**
+ * The DecryptResult parcelable contains the result of
+ * ICryptoPlugin decrypt method.
+ */
+@VintfStability
+parcelable DecryptResult {
+    /** The number of decrypted bytes. */
+    int bytesWritten;
+
+    /**
+     * Vendor-specific error message if provided by the vendor's
+     * crypto HAL.
+     */
+    String detailedError;
+}
diff --git a/drm/aidl/android/hardware/drm/DestinationBuffer.aidl b/drm/aidl/android/hardware/drm/DestinationBuffer.aidl
new file mode 100644
index 0000000..0f1e3f5
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/DestinationBuffer.aidl
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+import android.hardware.common.NativeHandle;
+import android.hardware.drm.BufferType;
+import android.hardware.drm.SharedBuffer;
+
+/**
+ * A decrypt destination buffer can be either normal user-space shared
+ * memory for the non-secure decrypt case, or it can be a secure buffer
+ * which is referenced by a native-handle. The native handle is allocated
+ * by the vendor's buffer allocator.
+ */
+@VintfStability
+parcelable DestinationBuffer {
+    /**
+     * The type of the buffer
+     */
+    BufferType type;
+    /**
+     * If type == SHARED_MEMORY, the decrypted data must be written
+     * to user-space non-secure shared memory.
+     */
+    SharedBuffer nonsecureMemory;
+    /**
+     * If type == NATIVE_HANDLE, the decrypted data must be written
+     * to secure memory referenced by the vendor's buffer allocator.
+     */
+    NativeHandle secureMemory;
+}
diff --git a/drm/aidl/android/hardware/drm/DrmMetric.aidl b/drm/aidl/android/hardware/drm/DrmMetric.aidl
new file mode 100644
index 0000000..6199af6
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/DrmMetric.aidl
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+import android.hardware.drm.DrmMetricNamedValue;
+
+/**
+ * The metric being captured.
+ *
+ * A metric must have a name and at least one value. A metric may have 0 or
+ * more attributes. The fields of a Metric are opaque to the framework.
+ */
+@VintfStability
+parcelable DrmMetric {
+    String name;
+
+    /**
+     * Detail(s) about the metric being captured.
+     *
+     * The fields of an Attribute are opaque to the framework.
+     */
+    List<DrmMetricNamedValue> attributes;
+
+    /**
+     * Value(s) of the metric.
+     *
+     * A metric may have multiple values. The component name may be left empty
+     * if there is only supposed to be one value for the given metric. The
+     * fields of the Value are opaque to the framework.
+     */
+    List<DrmMetricNamedValue> values;
+}
diff --git a/drm/aidl/android/hardware/drm/DrmMetricGroup.aidl b/drm/aidl/android/hardware/drm/DrmMetricGroup.aidl
new file mode 100644
index 0000000..3b1f3c9
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/DrmMetricGroup.aidl
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+import android.hardware.drm.DrmMetric;
+
+/**
+ * This message contains plugin-specific metrics made available to the client.
+ * The message is used for making vendor-specific metrics available to an
+ * application. The framework is not consuming any of the information.
+ *
+ * Metrics are grouped in instances of DrmMetricGroup. Each group contains
+ * multiple instances of Metric.
+ *
+ * Example:
+ *
+ * Capture the timing information of a buffer copy event, "buf_copy", broken
+ * out by the "size" of the buffer.
+ *
+ * DrmMetricGroup {
+ *   metrics[0] {
+ *     name: "buf_copy"
+ *     attributes[0] {
+ *       name: "size"
+ *       type: INT64_TYPE
+ *       int64Value: 1024
+ *     }
+ *     values[0] {
+ *       componentName: "operation_count"
+ *       type: INT64_TYPE
+ *       int64Value: 75
+ *     }
+ *     values[1] {
+ *       component_name: "average_time_seconds"
+ *       type: DOUBLE_TYPE
+ *       doubleValue: 0.00000042
+ *     }
+ *   }
+ * }
+ */
+@VintfStability
+parcelable DrmMetricGroup {
+    /**
+     * The list of metrics to be captured.
+     */
+    List<DrmMetric> metrics;
+}
diff --git a/drm/aidl/android/hardware/drm/DrmMetricNamedValue.aidl b/drm/aidl/android/hardware/drm/DrmMetricNamedValue.aidl
new file mode 100644
index 0000000..5bb17a6
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/DrmMetricNamedValue.aidl
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+import android.hardware.drm.DrmMetricValue;
+
+/**
+ * A name-value pair used in drm metrics.
+ */
+@VintfStability
+parcelable DrmMetricNamedValue {
+    String name;
+    DrmMetricValue value;
+}
diff --git a/drm/aidl/android/hardware/drm/DrmMetricValue.aidl b/drm/aidl/android/hardware/drm/DrmMetricValue.aidl
new file mode 100644
index 0000000..0203f3f
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/DrmMetricValue.aidl
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+/**
+ * The value of a metric or a metric's attribute.
+ */
+@VintfStability
+union DrmMetricValue {
+    long int64Value;
+    double doubleValue;
+    String stringValue;
+}
diff --git a/drm/aidl/android/hardware/drm/EventType.aidl b/drm/aidl/android/hardware/drm/EventType.aidl
new file mode 100644
index 0000000..7a06eb0
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/EventType.aidl
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+/**
+ * EventType enumerates the events that can be delivered by sendEvent
+ */
+@VintfStability
+@Backing(type="int")
+enum EventType {
+    /**
+     * This event type indicates that the app needs to request a certificate
+     * from the provisioning server. The request message data is obtained using
+     * getProvisionRequest().
+     */
+    PROVISION_REQUIRED,
+    /**
+     * This event type indicates that the app needs to request keys from a
+     * license server. The request message data is obtained using getKeyRequest.
+     */
+    KEY_NEEDED,
+    /**
+     * This event type indicates that the licensed usage duration for keys in a
+     * session has expired. The keys are no longer valid.
+     */
+    KEY_EXPIRED,
+    /**
+     * This event may indicate some specific vendor-defined condition, see your
+     * DRM provider documentation for details.
+     */
+    VENDOR_DEFINED,
+    /**
+     * This event indicates that a session opened by the app has been reclaimed
+     * by the resource manager.
+     */
+    SESSION_RECLAIMED,
+}
diff --git a/drm/aidl/android/hardware/drm/HdcpLevel.aidl b/drm/aidl/android/hardware/drm/HdcpLevel.aidl
new file mode 100644
index 0000000..3497b78
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/HdcpLevel.aidl
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+/**
+ * HDCP specifications are defined by Digital Content Protection LLC (DCP).
+ *   "HDCP Specification Rev. 2.3 Interface Independent Adaptation"
+ *   "HDCP 2.3 on HDMI Specification"
+ */
+@VintfStability
+@Backing(type="int")
+enum HdcpLevel {
+    /**
+     * Unable to determine the HDCP level
+     */
+    HDCP_UNKNOWN,
+    /**
+     * No HDCP, output is unprotected
+     */
+    HDCP_NONE,
+    /**
+     * HDCP version 1.0
+     */
+    HDCP_V1,
+    /**
+     * HDCP version 2.0 Type 1.
+     */
+    HDCP_V2,
+    /**
+     * HDCP version 2.1 Type 1.
+     */
+    HDCP_V2_1,
+    /**
+     *  HDCP version 2.2 Type 1.
+     */
+    HDCP_V2_2,
+    /**
+     * No digital output, implicitly secure
+     */
+    HDCP_NO_OUTPUT,
+    /**
+     * HDCP version 2.3 Type 1.
+     */
+    HDCP_V2_3,
+}
diff --git a/drm/aidl/android/hardware/drm/HdcpLevels.aidl b/drm/aidl/android/hardware/drm/HdcpLevels.aidl
new file mode 100644
index 0000000..cd4642b
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/HdcpLevels.aidl
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+import android.hardware.drm.HdcpLevel;
+
+@VintfStability
+parcelable HdcpLevels {
+    /** The lowest HDCP level for any connected displays. */
+    HdcpLevel connectedLevel;
+
+    /** The highest HDCP level that can be supported by the device. */
+    HdcpLevel maxLevel;
+}
diff --git a/drm/aidl/android/hardware/drm/ICryptoFactory.aidl b/drm/aidl/android/hardware/drm/ICryptoFactory.aidl
new file mode 100644
index 0000000..202bd3d
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/ICryptoFactory.aidl
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+import android.hardware.drm.Uuid;
+
+/**
+ * ICryptoFactory is the main entry point for interacting with a vendor's
+ * crypto HAL to create crypto plugins.
+
+ * Crypto plugins create crypto sessions which are used by a codec to decrypt
+ * protected video content.
+ */
+@VintfStability
+interface ICryptoFactory {
+    /**
+     * Create a crypto plugin for the specified uuid and scheme-specific
+     * initialization data.
+     *
+     * @param uuid uniquely identifies the drm scheme. See
+     *     http://dashif.org/identifiers/protection for uuid assignments
+     *
+     * @param initData scheme-specific init data.
+     *
+     * @return A crypto plugin instance if successful, or null if not created.
+     */
+    @nullable android.hardware.drm.ICryptoPlugin createPlugin(
+            in Uuid uuid, in byte[] initData);
+
+    /**
+     * Determine if a crypto scheme is supported by this HAL.
+     *
+     * @param uuid identifies the crypto scheme in question
+     * @return must be true only if the scheme is supported
+     */
+    boolean isCryptoSchemeSupported(in Uuid uuid);
+}
diff --git a/drm/aidl/android/hardware/drm/ICryptoPlugin.aidl b/drm/aidl/android/hardware/drm/ICryptoPlugin.aidl
new file mode 100644
index 0000000..80a63df
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/ICryptoPlugin.aidl
@@ -0,0 +1,138 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+import android.hardware.common.Ashmem;
+import android.hardware.drm.DecryptResult;
+import android.hardware.drm.DestinationBuffer;
+import android.hardware.drm.LogMessage;
+import android.hardware.drm.Mode;
+import android.hardware.drm.Pattern;
+import android.hardware.drm.SharedBuffer;
+import android.hardware.drm.Status;
+import android.hardware.drm.SubSample;
+
+/**
+ * ICryptoPlugin is the HAL for vendor-provided crypto plugins.
+ *
+ * It allows crypto sessions to be opened and operated on, to
+ * load crypto keys for a codec to decrypt protected video content.
+ */
+@VintfStability
+interface ICryptoPlugin {
+    /**
+     * Decrypt an array of subsamples from the source memory buffer to the
+     * destination memory buffer.
+     *
+     * @param secure a flag to indicate if a secure decoder is being used.
+     *     This enables the plugin to configure buffer modes to work
+     *     consistently with a secure decoder.
+     * @param the keyId for the key that is used to do the decryption. The
+     *     keyId refers to a key in the associated MediaDrm instance.
+     * @param iv the initialization vector to use
+     * @param mode the crypto mode to use
+     * @param pattern the crypto pattern to use
+     * @param subSamples a vector of subsamples indicating the number
+     *     of clear and encrypted bytes to process. This allows the decrypt
+     *     call to operate on a range of subsamples in a single call
+     * @param source the input buffer for the decryption
+     * @param offset the offset of the first byte of encrypted data from
+     *     the base of the source buffer
+     * @param destination the output buffer for the decryption
+     *
+     * @return DecryptResult parcelable
+     *     Implicit error codes:
+     *       + ERROR_DRM_CANNOT_HANDLE in other failure cases
+     *       + ERROR_DRM_DECRYPT if the decrypt operation fails
+     *       + ERROR_DRM_FRAME_TOO_LARGE if the frame being decrypted into
+     *             the secure output buffer exceeds the size of the buffer
+     *       + ERROR_DRM_INSUFFICIENT_OUTPUT_PROTECTION if required output
+     *             protections are not active
+     *       + ERROR_DRM_INSUFFICIENT_SECURITY if the security level of the
+     *             device is not sufficient to meet the requirements in
+     *             the license policy
+     *       + ERROR_DRM_INVALID_STATE if the device is in a state where it
+     *             is not able to perform decryption
+     *       + ERROR_DRM_LICENSE_EXPIRED if the license keys have expired
+     *       + ERROR_DRM_NO_LICENSE if no license keys have been loaded
+     *       + ERROR_DRM_RESOURCE_BUSY if the resources required to perform
+     *             the decryption are not available
+     *       + ERROR_DRM_SESSION_NOT_OPENED if the decrypt session is not
+     *             opened
+     */
+    DecryptResult decrypt(in boolean secure, in byte[] keyId, in byte[] iv, in Mode mode,
+            in Pattern pattern, in SubSample[] subSamples, in SharedBuffer source, in long offset,
+            in DestinationBuffer destination);
+
+    /**
+     * Get OEMCrypto or plugin error messages.
+     *
+     * @return LogMessages
+     *     Implicit error codes:
+     *       + GENERAL_OEM_ERROR on OEM-provided, low-level component failures;
+     *       + GENERAL_PLUGIN_ERROR on unexpected plugin-level errors.
+     */
+    List<LogMessage> getLogMessages();
+
+    /**
+     * Notify a plugin of the currently configured resolution.
+     *
+     * @param width - the display resolutions's width
+     * @param height - the display resolution's height
+     */
+    void notifyResolution(in int width, in int height);
+
+    /**
+     * Check if the specified mime-type requires a secure decoder
+     * component.
+     *
+     * @param mime The content mime-type
+     * @return must be true only if a secure decoder is required
+     * for the specified mime-type
+     */
+    boolean requiresSecureDecoderComponent(in String mime);
+
+    /**
+     * Associate a mediadrm session with this crypto session.
+     *
+     * @param sessionId the MediaDrm session ID to associate with
+     *     this crypto session
+     * @return (implicit) the status of the call, status can be:
+     *     ERROR_DRM_SESSION_NOT_OPENED if the session is not opened, or
+     *     ERROR_DRM_CANNOT_HANDLE if the operation is not supported by
+     *         the drm scheme
+     */
+    void setMediaDrmSession(in byte[] sessionId);
+
+    /**
+     * Set a shared memory base for subsequent decrypt operations.
+     * The buffer base is mmaped from a ParcelFileDesciptor in Ashmem
+     * which maps shared memory in the HAL module.
+     * After the shared buffer base is established, the decrypt() method
+     * receives SharedBuffer instances which specify the buffer address range
+     * for decrypt source and destination addresses.
+     *
+     * There can be multiple shared buffers per crypto plugin. The buffers
+     * are distinguished by the bufferId.
+     *
+     * @param base the base of the memory buffer identified by
+     *     bufferId
+     * @param bufferId identifies the specific shared buffer for which
+     *     the base is being set.
+     */
+    void setSharedBufferBase(in Ashmem base, in int bufferId);
+}
diff --git a/drm/aidl/android/hardware/drm/IDrmFactory.aidl b/drm/aidl/android/hardware/drm/IDrmFactory.aidl
new file mode 100644
index 0000000..b9622a4
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/IDrmFactory.aidl
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+import android.hardware.drm.SecurityLevel;
+import android.hardware.drm.Uuid;
+
+/**
+ * IDrmFactory is the main entry point for interacting with a vendor's
+ * drm HAL to create drm plugin instances. A drm plugin instance
+ * creates drm sessions which are used to obtain keys for a crypto
+ * session so it can decrypt protected video content.
+ */
+@VintfStability
+interface IDrmFactory {
+    /**
+     * Create a drm plugin instance for the specified uuid and
+     * scheme-specific initialization data.
+     *
+     * @param uuid uniquely identifies the drm scheme. See
+     *     http://dashif.org/identifiers/protection for uuid assignments
+     * @param appPackageName identifies the package name of the calling
+     *     application.
+     *
+     * @return A DRM plugin instance if successful, or null if not created.
+     *     Implicit error codes:
+     *       + ERROR_DRM_CANNOT_HANDLE if the plugin cannot be created.
+     */
+    @nullable android.hardware.drm.IDrmPlugin createPlugin(
+            in Uuid uuid, in String appPackageName);
+
+    /**
+     * Return vector of uuids identifying crypto schemes supported by
+     * this HAL.
+     *
+     * @return List of uuids for which isCryptoSchemeSupported is true;
+     *      each uuid can be used as input to createPlugin.
+     */
+    List<Uuid> getSupportedCryptoSchemes();
+
+    /**
+     * Determine if the HAL factory is able to construct plugins that
+     * support a given media container format specified by mimeType
+     *
+     * @param mimeType identifies the mime type in question
+     *
+     * @return must be true only if the scheme is supported
+     */
+    boolean isContentTypeSupported(in String mimeType);
+
+    /**
+     * Determine if a specific security level is supported by the device.
+     *
+     * @param uuid identifies the crypto scheme in question
+     * @param mimeType identifies the mime type in question
+     * @param securityLevel specifies the security level required
+     *
+     * @return must be true only if the scheme is supported
+     */
+    boolean isCryptoSchemeSupported(
+            in Uuid uuid, in String mimeType, in SecurityLevel securityLevel);
+}
diff --git a/drm/aidl/android/hardware/drm/IDrmPlugin.aidl b/drm/aidl/android/hardware/drm/IDrmPlugin.aidl
new file mode 100644
index 0000000..e649f26
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/IDrmPlugin.aidl
@@ -0,0 +1,755 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+import android.hardware.drm.DrmMetricGroup;
+import android.hardware.drm.HdcpLevels;
+import android.hardware.drm.IDrmPluginListener;
+import android.hardware.drm.KeySetId;
+import android.hardware.drm.KeyRequest;
+import android.hardware.drm.KeyStatus;
+import android.hardware.drm.KeyType;
+import android.hardware.drm.KeyValue;
+import android.hardware.drm.LogMessage;
+import android.hardware.drm.NumberOfSessions;
+import android.hardware.drm.OfflineLicenseState;
+import android.hardware.drm.OpaqueData;
+import android.hardware.drm.ProvideProvisionResponseResult;
+import android.hardware.drm.ProvisionRequest;
+import android.hardware.drm.SecureStop;
+import android.hardware.drm.SecureStopId;
+import android.hardware.drm.SecurityLevel;
+
+/**
+ * IDrmPlugin is used to interact with a specific drm plugin that was
+ * created by IDrmFactory::createPlugin.
+ *
+ * A drm plugin provides methods for obtaining drm keys to be used by a codec
+ * to decrypt protected video content.
+ */
+@VintfStability
+interface IDrmPlugin {
+    /**
+     * Close a session on the DrmPlugin object
+     *
+     * @param sessionId the session id the call applies to
+     *
+     * @return (implicit) the status of the call:
+     *     BAD_VALUE if the sessionId is invalid
+     *     ERROR_DRM_INVALID_STATE if the HAL is in a state where
+     *         the session cannot be closed.
+     *     ERROR_DRM_SESSION_NOT_OPENED if the session is not opened
+     */
+    void closeSession(in byte[] sessionId);
+
+    /**
+     * Decrypt the provided input buffer with the cipher algorithm
+     * specified by setCipherAlgorithm and the key selected by keyId,
+     * and return the decrypted data.
+     *
+     * @param sessionId the session id the call applies to
+     * @param keyId the ID of the key to use for decryption
+     * @param input the input data to decrypt
+     * @param iv the initialization vector to use for decryption
+     *
+     * @return decrypted output buffer
+     *     Implicit error codes:
+     *       + BAD_VALUE if the sessionId is invalid
+     *       + ERROR_DRM_INVALID_STATE if the HAL is in a state where
+     *             the decrypt operation cannot be performed.
+     *       + ERROR_DRM_SESSION_NOT_OPENED if the session is not opened
+     */
+    byte[] decrypt(in byte[] sessionId, in byte[] keyId, in byte[] input, in byte[] iv);
+
+    /**
+     * Encrypt the provided input buffer with the cipher algorithm specified by
+     * setCipherAlgorithm and the key selected by keyId, and return the
+     * encrypted data.
+     *
+     * @param sessionId the session id the call applies to
+     * @param keyId the ID of the key to use for encryption
+     * @param input the input data to encrypt
+     * @param iv the initialization vector to use for encryption
+     *
+     * @return encrypted output buffer
+     *     Implicit error codes:
+     *       + BAD_VALUE if the sessionId is invalid
+     *       + ERROR_DRM_INVALID_STATE if the HAL is in a state where
+     *             the encrypt operation cannot be performed.
+     *       + ERROR_DRM_SESSION_NOT_OPENED if the session is not opened
+     */
+    byte[] encrypt(in byte[] sessionId, in byte[] keyId, in byte[] input, in byte[] iv);
+
+    /**
+     * Return the currently negotiated and max supported HDCP levels.
+     *
+     * The current level is based on the display(s) the device is connected to.
+     * If multiple HDCP-capable displays are simultaneously connected to
+     * separate interfaces, this method returns the lowest negotiated HDCP level
+     * of all interfaces.
+     *
+     * The maximum HDCP level is the highest level that can potentially be
+     * negotiated. It is a constant for any device, i.e. it does not depend on
+     * downstream receiving devices that could be connected. For example, if
+     * the device has HDCP 1.x keys and is capable of negotiating HDCP 1.x, but
+     * does not have HDCP 2.x keys, then the maximum HDCP capability would be
+     * reported as 1.x. If multiple HDCP-capable interfaces are present, it
+     * indicates the highest of the maximum HDCP levels of all interfaces.
+     *
+     * This method should only be used for informational purposes, not for
+     * enforcing compliance with HDCP requirements. Trusted enforcement of HDCP
+     * policies must be handled by the DRM system.
+     *
+     * @return HdcpLevels parcelable
+     *     Implicit error codes:
+     *       + ERROR_DRM_INVALID_STATE if the HAL is in a state where
+     *             the HDCP level cannot be queried
+     */
+    HdcpLevels getHdcpLevels();
+
+    /**
+     * A key request/response exchange occurs between the app and a License
+     * Server to obtain the keys required to decrypt the content.
+     * getKeyRequest() is used to obtain an opaque key request blob that is
+     * delivered to the license server.
+     *
+     * @param scope either a sessionId or a keySetId, depending on the
+     *     specified keyType. When the keyType is OFFLINE or STREAMING, scope
+     *     must be set to the sessionId the keys will be provided to. When the
+     *     keyType is RELEASE, scope must be set to the keySetId of the keys
+     *     being released.
+     * @param initData container-specific data, its meaning is interpreted
+     *     based on the mime type provided in the mimeType parameter. It could
+     *     contain, for example, the content ID, key ID or other data obtained
+     *     from the content metadata that is required to generate the key
+     *     request. initData must be empty when keyType is RELEASE.
+     * @param mimeType identifies the mime type of the content
+     * @param keyType specifies if the keys are to be used for streaming,
+     *     offline or a release
+     * @param optionalParameters included in the key request message to
+     *     allow a client application to provide additional message parameters
+     *     to the server.
+     *
+     * @return KeyRequest parcelable
+     *     Implicit error codes:
+     *       + BAD_VALUE if any parameters are invalid
+     *       + ERROR_DRM_CANNOT_HANDLE if getKeyRequest is not supported at
+     *             the time of the call
+     *       + ERROR_DRM_INVALID_STATE if the HAL is in a state where
+     *             a key request cannot be generated
+     *       + ERROR_DRM_NOT_PROVISIONED if the device requires provisioning
+     *             before it is able to generate a key request
+     *       + ERROR_DRM_RESOURCE_CONTENTION if client applications using the
+     *             hal are temporarily exceeding the available crypto resources
+     *             such that a retry of the operation is likely to succeed
+     *       + ERROR_DRM_SESSION_NOT_OPENED if the session is not opened
+     */
+    KeyRequest getKeyRequest(in byte[] scope, in byte[] initData, in String mimeType,
+            in KeyType keyType, in KeyValue[] optionalParameters);
+
+    /**
+     * Get Plugin error messages.
+     *
+     * @return LogMessages
+     *     Implicit error codes:
+     *       + GENERAL_OEM_ERROR on OEM-provided, low-level component failures;
+     *       + GENERAL_PLUGIN_ERROR on unexpected plugin-level errors.
+     */
+    List<LogMessage> getLogMessages();
+
+    /**
+     * Returns the plugin-specific metrics. Multiple metric groups may be
+     * returned in one call to getMetrics(). The scope and definition of the
+     * metrics is defined by the plugin.
+     *
+     * @return collection of metric groups provided by the plugin
+     *     Implicit error codes:
+     *       + ERROR_DRM_INVALID_STATE if the metrics are not available to be
+     *             returned.
+     */
+    List<DrmMetricGroup> getMetrics();
+
+    /**
+     * Return the current number of open sessions and the maximum number of
+     * sessions that may be opened simultaneously among all DRM instances
+     * for the active DRM scheme.
+     *
+     * @return NumberOfSessions parcelable
+     *     Implicit error codes:
+     *       + ERROR_DRM_INVALID_STATE if the HAL is in a state where the
+     *             number of sessions cannot be queried
+     */
+    NumberOfSessions getNumberOfSessions();
+
+    /**
+     * The keys in an offline license allow protected content to be
+     * played even if the device is not connected to a network.
+     * Offline licenses are stored on the device after a key
+     * request/response exchange when the key request KeyType is
+     * OFFLINE. Normally each app is responsible for keeping track of
+     * the KeySetIds it has created. In some situations however, it
+     * will be necessary to request the list of stored offline license
+     * KeySetIds. If an app loses the KeySetId for any stored licenses
+     * that it created, for example, it must be able to recover the
+     * stored KeySetIds so those licenses will be removed when they
+     * expire or when the app is uninstalled.
+     *
+     * This method returns a list of the KeySetIds for all offline
+     * licenses. The offline license KeySetId allows an app to query
+     * the status of an offline license or remove it.
+     *
+     * @return list of keySetIds
+     *     Implicit error codes:
+     *       + ERROR_DRM_INVALID_STATE if the HAL is in a state where the
+     *             KeySetIds can't be returned
+     */
+    List<KeySetId> getOfflineLicenseKeySetIds();
+
+    /**
+     * Request the state of an offline license. An offline license must
+     * be usable or inactive. The keys in a usable offline license are
+     * available for decryption. When the offline license state is
+     * inactive, the keys have been marked for release using
+     * getKeyRequest with KeyType RELEASE but the key response has not
+     * been received. The keys in an inactive offline license are not
+     * usable for decryption.
+     *
+     * @param keySetId the id of the offline license
+     *
+     * @return The offline license state, UNKNOWN, USABLE or INACTIVE.
+     *     Implicit error codes:
+     *       + BAD_VALUE if the license is not found
+     *       + ERROR_DRM_INVALID_STATE if the HAL is in a state where the
+     *             offline license state can't be queried
+     */
+    OfflineLicenseState getOfflineLicenseState(in KeySetId keySetId);
+
+    /**
+     * Read a byte array property value given the property name.
+     * See getPropertyString.
+     *
+     * @param propertyName the name of the property
+     *
+     * @return property value bye array
+     *     Implicit error codes:
+     *       + BAD_VALUE if the property name is invalid
+     *       + ERROR_DRM_CANNOT_HANDLE if the property is not supported
+     *       + ERROR_DRM_INVALID_STATE if the HAL is in a state where the
+     *             property cannot be obtained
+     */
+    byte[] getPropertyByteArray(in String propertyName);
+
+    /**
+     * A drm scheme can have properties that are settable and readable
+     * by an app. There are a few forms of property access methods,
+     * depending on the data type of the property.
+     *
+     * Property values defined by the public API are:
+     *   "vendor" [string] identifies the maker of the drm scheme
+     *   "version" [string] identifies the version of the drm scheme
+     *   "description" [string] describes the drm scheme
+     *   'deviceUniqueId' [byte array] The device unique identifier is
+     *   established during device provisioning and provides a means of
+     *   uniquely identifying each device.
+     *
+     * Since drm scheme properties may vary, additional field names may be
+     * defined by each DRM vendor. Refer to your DRM provider documentation
+     * for definitions of its additional field names.
+     *
+     * Read a string property value given the property name.
+     *
+     * @param propertyName the name of the property
+     *
+     * @return the property value string.
+     *     Implicit error codes:
+     *       + BAD_VALUE if the property name is invalid
+     *       + ERROR_DRM_CANNOT_HANDLE if the property is not supported
+     *       + ERROR_DRM_INVALID_STATE if the HAL is in a state where the
+     *             property cannot be obtained
+     */
+    String getPropertyString(in String propertyName);
+
+    /**
+     * A provision request/response exchange occurs between the app
+     * and a provisioning server to retrieve a device certificate.
+     * getProvisionRequest is used to obtain an opaque provisioning
+     * request blob that is delivered to the provisioning server.
+     *
+     * @param certificateType the type of certificate requested, e.g. "X.509"
+     * @param certificateAuthority identifies the certificate authority.
+     *     A certificate authority (CA) is an entity which issues digital
+     *     certificates for use by other parties. It is an example of a
+     *     trusted third party.
+     *
+     * @return ProvisionRequest parcelable
+     *     Implicit error codes:
+     *       + ERROR_DRM_CANNOT_HANDLE if the drm scheme does not require
+     *             provisioning
+     *       + ERROR_DRM_INVALID_STATE if the HAL is in a state where
+     *             the provision request cannot be generated
+     *       + ERROR_DRM_RESOURCE_CONTENTION if client applications using
+     *             the hal are temporarily exceeding the available crypto
+     *             resources such that a retry of the operation is likely
+     *             to succeed
+     */
+    ProvisionRequest getProvisionRequest(
+            in String certificateType, in String certificateAuthority);
+
+    /**
+     * Get all secure stops by secure stop ID
+     *
+     * @param secureStopId the ID of the secure stop to return.
+     *     The secure stop ID is delivered by the key server
+     *     as part of the key response and must also be known by the app.
+     *
+     * @return secure stop opaque object.
+     *     Implicit error codes:
+     *       + BAD_VALUE if the secureStopId is invalid
+     *       + ERROR_DRM_INVALID_STATE if the HAL is in a state where
+     *             the secure stop cannot be returned
+     */
+    SecureStop getSecureStop(in SecureStopId secureStopId);
+
+    /**
+     * Get the IDs of all secure stops on the device
+     *
+     * @return list of secure stops IDs.
+     *     Implicit error codes:
+     *       + ERROR_DRM_INVALID_STATE if the HAL is in a state where
+     *             the secure stop IDs list cannot be returned
+     */
+    List<SecureStopId> getSecureStopIds();
+
+    /**
+     * SecureStop is a way of enforcing the concurrent stream limit per
+     * subscriber.
+     *
+     * It can securely monitor the lifetime of sessions across device reboots
+     * by periodically persisting the session lifetime status in secure
+     * storage.
+     *
+     * A signed version of the sessionID is written to persistent storage on the
+     * device when each MediaCrypto object is created and periodically during
+     * playback. The sessionID is signed by the device private key to prevent
+     * tampering.
+     *
+     * When playback is completed the session is destroyed, and the secure
+     * stops are queried by the app. The app then delivers the secure stop
+     * message to a server which verifies the signature to confirm that the
+     * session and its keys have been removed from the device. The persisted
+     * record on the device is removed after receiving and verifying the
+     * signed response from the server.
+     *
+     * Get all secure stops on the device
+     *
+     * @return list of the opaque secure stop objects.
+     *     Implicit error codes:
+     *       + ERROR_DRM_INVALID_STATE if the HAL is in a state where
+     *             the secure stops cannot be returned
+     */
+    List<SecureStop> getSecureStops();
+
+    /**
+     * Return the current security level of a session. A session has an initial
+     * security level determined by the robustness of the DRM system's
+     * implementation on the device.
+     *
+     * @param sessionId the session id the call applies to
+     *
+     * @return the current security level for the session.
+     *     Implicit error codes:
+     *       + BAD_VALUE if the sessionId is invalid
+     *       + ERROR_DRM_INVALID_STATE if the HAL is in a state where
+     *             the security level cannot be queried
+     *       + ERROR_DRM_SESSION_NOT_OPENED if the session is not opened
+     */
+    SecurityLevel getSecurityLevel(in byte[] sessionId);
+
+    /**
+     * Open a new session at a requested security level. The security level
+     * represents the robustness of the device's DRM implementation. By default,
+     * sessions are opened at the native security level of the device which is
+     * the maximum level that can be supported. Overriding the security level is
+     * necessary when the decrypted frames need to be manipulated, such as for
+     * image compositing. The security level parameter must be equal to or lower
+     * than the native level. If the requested level is not supported, the next
+     * lower supported security level must be set. The level can be queried
+     * using {@link #getSecurityLevel}. A session ID is returned.
+     *
+     * @param level the requested security level
+     *
+     * @return sessionId
+     */
+    byte[] openSession(in SecurityLevel securityLevel);
+
+    /**
+     * After a key response is received by the app, it is provided to the
+     * Drm plugin using provideKeyResponse.
+     *
+     * @param scope may be a sessionId or a keySetId depending on the
+     *     type of the response. Scope should be set to the sessionId
+     *     when the response is for either streaming or offline key requests.
+     *     Scope should be set to the keySetId when the response is for
+     *     a release request.
+     * @param response the response from the key server that is being
+     *     provided to the drm HAL.
+     *
+     * @return a keySetId that can be used to later restore the keys to a new
+     *     session with the method restoreKeys when the response is for an
+     *     offline key request.
+     *     Implicit error codes:
+     *       + BAD_VALUE if any parameters are invalid
+     *       + ERROR_DRM_CANNOT_HANDLE if provideKeyResponse is not supported
+     *             at the time of the call
+     *       + ERROR_DRM_DEVICE_REVOKED if the device has been disabled by
+     *             the license policy
+     *       + ERROR_DRM_INVALID_STATE if the HAL is in a state where
+     *             a key response cannot be handled.
+     *       + ERROR_DRM_NOT_PROVISIONED if the device requires provisioning
+     *             before it can handle the key response
+     *       + ERROR_DRM_SESSION_NOT_OPENED if the session is not opened
+     */
+    KeySetId provideKeyResponse(in byte[] scope, in byte[] response);
+
+    /**
+     * After a provision response is received by the app from a provisioning
+     * server, it is provided to the Drm HAL using provideProvisionResponse.
+     * The HAL implementation must receive the provision request and
+     * store the provisioned credentials.
+     *
+     * @param response the opaque provisioning response received by the
+     * app from a provisioning server.
+     *
+     * @return ProvideProvisionResponseResult parcelable, which contains
+     *     the public certificate and encrypted private key that can be
+     *     used by signRSA to compute an RSA signature on a message.
+     *     Implicit error codes:
+     *       + BAD_VALUE if any parameters are invalid
+     *       + ERROR_DRM_DEVICE_REVOKED if the device has been disabled by
+     *             the license policy
+     *       + ERROR_DRM_INVALID_STATE if the HAL is in a state where the
+     *             provision response cannot be handled
+     */
+    ProvideProvisionResponseResult provideProvisionResponse(in byte[] response);
+
+    /**
+     * Request an informative description of the license for the session.
+     * The status is in the form of {name, value} pairs. Since DRM license
+     * policies vary by vendor, the specific status field names are
+     * determined by each DRM vendor. Refer to your DRM provider
+     * documentation for definitions of the field names for a particular
+     * drm scheme.
+     *
+     * @param sessionId the session id the call applies to
+     *
+     * @return a list of name value pairs describing the license.
+     *     Implicit error codes:
+     *       + ERROR_DRM_SESSION_NOT_OPENED if the session is not opened
+     *       + BAD_VALUE if any parameters are invalid
+     *       + ERROR_DRM_INVALID_STATE if the HAL is in a state where the
+     *             key status cannot be queried.
+     */
+    List<KeyValue> queryKeyStatus(in byte[] sessionId);
+
+    /**
+     * Release all secure stops on the device
+     *
+     * @return (implicit) the status of the call:
+     *     ERROR_DRM_INVALID_STATE if the HAL is in a state where
+     *         the secure stops cannot be released.
+     */
+    void releaseAllSecureStops();
+
+    /**
+     * Release a secure stop by secure stop ID
+     *
+     * @param secureStopId the ID of the secure stop to release.
+     *     The secure stop ID is delivered by the key server as
+     *     part of the key response and must also be known by the app.
+     *
+     * @return (implicit) the status of the call:
+     *     BAD_VALUE if the secureStopId is invalid
+     *     ERROR_DRM_INVALID_STATE if the HAL is in a state where
+     *         the secure stop cannot be released.
+     */
+    void releaseSecureStop(in SecureStopId secureStopId);
+
+    /**
+     * Release secure stops given a release message from the key server
+     *
+     * @param ssRelease the secure stop release message identifying
+     *     one or more secure stops to release. ssRelease is opaque,
+     *     it is passed directly from a DRM license server through
+     *     the app and media framework to the vendor HAL module.
+     *     The format and content of ssRelease must be defined by the
+     *     DRM scheme being implemented according to this HAL.
+     *     The DRM scheme can be identified by its UUID which
+     *     can be queried using IDrmFactory::isCryptoSchemeSupported.
+     *
+     * @return (implicit) the status of the call:
+     *     BAD_VALUE if ssRelease is invalid
+     *     ERROR_DRM_INVALID_STATE if the HAL is in a state wherei
+     *         the secure stop cannot be released.
+     */
+    void releaseSecureStops(in OpaqueData ssRelease);
+
+    /**
+     * Remove all secure stops on the device without requiring a secure
+     * stop release response message from the key server.
+     *
+     * @return (implicit) the status of the call:
+     *     ERROR_DRM_INVALID_STATE if the HAL is in a state where
+     *         the secure stops cannot be removed.
+     */
+    void removeAllSecureStops();
+
+    /**
+     * Remove the current keys from a session
+     *
+     * @param sessionId the session id the call applies to
+     *
+     * @return (implicit) the status of the call:
+     *     BAD_VALUE if the sessionId is invalid
+     *     ERROR_DRM_INVALID_STATE if the HAL is in a state where
+     *         the keys cannot be removed.
+     *     ERROR_DRM_SESSION_NOT_OPENED if the session is not opened
+     */
+    void removeKeys(in byte[] sessionId);
+
+    /**
+     * Normally offline licenses are released using a key
+     * request/response exchange using getKeyRequest where the KeyType
+     * is RELEASE, followed by provideKeyResponse. This allows the
+     * server to cryptographically confirm that the license has been
+     * removed and then adjust the count of offline licenses allocated
+     * to the device.
+     * <p>
+     * In some exceptional situations it will be necessary to directly
+     * remove offline licenses without notifying the server, which is
+     * performed by this method.
+     *
+     * @param keySetId the id of the offline license to remove
+     *
+     * @return (implicit) the status of the call:
+     *     BAD_VALUE if the license is not found
+     *     ERROR_DRM_INVALID_STATE if the HAL is in a state where
+     *         the KeySetIds can't be removed.
+     */
+    void removeOfflineLicense(in KeySetId keySetId);
+
+    /**
+     * Remove a secure stop given its secure stop ID, without requiring
+     * a secure stop release response message from the key server.
+     *
+     * @param secureStopId the ID of the secure stop to release.
+     *
+     * @return the status of the call:
+     *     BAD_VALUE if the secureStopId is invalid
+     *     ERROR_DRM_INVALID_STATE if the HAL is in a state where
+     *         the secure stop cannot be removed.
+     */
+    void removeSecureStop(in SecureStopId secureStopId);
+
+    /**
+     * Check if the specified mime-type & security level require a secure decoder
+     * component.
+     *
+     * @param mime The content mime-type
+     * @param level the requested security level
+     *
+     * @return must be true if and only if a secure decoder is
+     *     required for the specified mime-type & security level
+     */
+    boolean requiresSecureDecoder(in String mime, in SecurityLevel level);
+
+    /**
+     * Check if the specified mime-type requires a secure decoder component
+     * at the highest security level supported on the device.
+     *
+     * @param mime The content mime-type
+     *
+     * @return must be true if and only if a secure decoder is required
+     *     for the specified mime-type
+     */
+    boolean requiresSecureDecoderDefault(in String mime);
+
+    /**
+     * Restore persisted offline keys into a new session
+     *
+     * @param sessionId the session id the call applies to
+     * @param keySetId identifies the keys to load, obtained from
+     *     a prior call to provideKeyResponse().
+     *
+     * @return (implicit) the status of the call:
+     *     ERROR_DRM_SESSION_NOT_OPENED if the session is not opened
+     *     BAD_VALUE if any parameters are invalid
+     *     ERROR_DRM_INVALID_STATE if the HAL is in a state where
+     *         keys cannot be restored.
+     */
+    void restoreKeys(in byte[] sessionId, in KeySetId keySetId);
+
+    /**
+     * The following methods implement operations on a CryptoSession to support
+     * encrypt, decrypt, sign verify operations on operator-provided
+     * session keys.
+     *
+     *
+     * Set the cipher algorithm to be used for the specified session.
+     *
+     * @param sessionId the session id the call applies to
+     * @param algorithm the algorithm to use. The string conforms to JCA
+     *     Standard Names for Cipher Transforms and is case insensitive. An
+     *     example algorithm is "AES/CBC/PKCS5Padding".
+     *
+     * @return (implicit) the status of the call:
+     *     BAD_VALUE if any parameters are invalid
+     *     ERROR_DRM_INVALID_STATE  if the HAL is in a state where
+     *         the algorithm cannot be set.
+     *     ERROR_DRM_SESSION_NOT_OPENED if the session is not opened`
+     */
+    void setCipherAlgorithm(in byte[] sessionId, in String algorithm);
+
+    /**
+     * Plugins call the following methods to deliver events to the
+     * java app.
+     *
+     *
+     * Set a listener for a drm session. This allows the drm HAL to
+     * make asynchronous calls back to the client of IDrm.
+     *
+     * @param listener instance of IDrmPluginListener to receive the events
+     */
+    void setListener(in IDrmPluginListener listener);
+
+    /**
+     * Set the MAC algorithm to be used for computing hashes in a session.
+     *
+     * @param sessionId the session id the call applies to
+     * @param algorithm the algorithm to use. The string conforms to JCA
+     *     Standard Names for Mac Algorithms and is case insensitive. An example MAC
+     *     algorithm string is "HmacSHA256".
+     *
+     * @return (implicit) the status of the call:
+     *     BAD_VALUE if any parameters are invalid
+     *     ERROR_DRM_INVALID_STATE  if the HAL is in a state where
+     *         the algorithm cannot be set.
+     *     ERROR_DRM_SESSION_NOT_OPENED if the session is not opened`
+     */
+    void setMacAlgorithm(in byte[] sessionId, in String algorithm);
+
+    /**
+     * Set playback id of a drm session. The playback id can be used to join drm session metrics
+     * with metrics from other low level media components, e.g. codecs, or metrics from the high
+     * level player.
+     *
+     * @param sessionId drm session id
+     * @param playbackId high level playback id
+     *
+     * @return (implicit) the status of the call:
+     *    ERROR_DRM_SESSION_NOT_OPENED if the drm session cannot be found
+     */
+    void setPlaybackId(in byte[] sessionId, in String playbackId);
+
+    /**
+     * Write a property byte array value given the property name
+     *
+     * @param propertyName the name of the property
+     * @param value the value to write
+     *
+     * @return (implicit) the status of the call:
+     *     BAD_VALUE if the property name is invalid
+     *     ERROR_DRM_CANNOT_HANDLE if the property is not supported
+     *     ERROR_DRM_INVALID_STATE if the HAL is in a state where the
+     *         property cannot be set
+     */
+    void setPropertyByteArray(in String propertyName, in byte[] value);
+
+    /**
+     * Write a property string value given the property name
+     *
+     * @param propertyName the name of the property
+     * @param value the value to write
+     *
+     * @return (implicit) status of the call:
+     *     BAD_VALUE if the property name is invalid
+     *     ERROR_DRM_CANNOT_HANDLE if the property is not supported
+     *     ERROR_DRM_INVALID_STATE if the HAL is in a state where the
+     *         property cannot be set
+     */
+    void setPropertyString(in String propertyName, in String value);
+
+    /**
+     * Compute a signature over the provided message using the mac algorithm
+     * specified by setMacAlgorithm and the key selected by keyId and return
+     * the signature.
+     *
+     * @param sessionId the session id the call applies to
+     * @param keyId the ID of the key to use for decryption
+     * @param message the message to compute a signature over
+     *
+     * @return signature computed over the message
+     *     Implicit error codes:
+     *       + ERROR_DRM_SESSION_NOT_OPENED if the session is not opened
+     *       + BAD_VALUE if any parameters are invalid
+     *       + ERROR_DRM_INVALID_STATE if the HAL is in a state where the
+     *             sign operation cannot be performed.
+     */
+    byte[] sign(in byte[] sessionId, in byte[] keyId, in byte[] message);
+
+    /**
+     * Compute an RSA signature on the provided message using the specified
+     * algorithm.
+     *
+     * @param sessionId the session id the call applies to
+     * @param algorithm the signing algorithm, such as "RSASSA-PSS-SHA1"
+     *     or "PKCS1-BlockType1"
+     * @param message the message to compute the signature on
+     * @param wrappedKey the private key returned during provisioning as
+     *     returned by provideProvisionResponse.
+     *
+     * @return signature computed over the message
+     *     Implicit error codes:
+     *       + BAD_VALUE if any parameters are invalid
+     *       + ERROR_DRM_INVALID_STATE if the HAL is in a state where the
+     *             signRSA operation operation cannot be performed
+     *       + ERROR_DRM_SESSION_NOT_OPENED if the session is not opened
+     */
+    byte[] signRSA(
+            in byte[] sessionId, in String algorithm, in byte[] message,
+            in byte[] wrappedkey);
+
+    /**
+     * Compute a hash of the provided message using the mac algorithm specified
+     * by setMacAlgorithm and the key selected by keyId, and compare with the
+     * expected result.
+     *
+     * @param sessionId the session id the call applies to
+     * @param keyId the ID of the key to use for decryption
+     * @param message the message to compute a hash of
+     * @param signature the signature to verify
+     *
+     * @return true if the signature is verified positively, false otherwise.
+     *     Implicit error codes:
+     *       + ERROR_DRM_SESSION_NOT_OPENED if the session is not opened
+     *       + BAD_VALUE if any parameters are invalid
+     *       + ERROR_DRM_INVALID_STATE if the HAL is in a state where the
+     *             verify operation cannot be performed.
+     */
+    boolean verify(
+            in byte[] sessionId, in byte[] keyId, in byte[] message,
+            in byte[] signature);
+}
diff --git a/drm/aidl/android/hardware/drm/IDrmPluginListener.aidl b/drm/aidl/android/hardware/drm/IDrmPluginListener.aidl
new file mode 100644
index 0000000..d52da66
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/IDrmPluginListener.aidl
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+import android.hardware.drm.EventType;
+import android.hardware.drm.KeyStatus;
+
+/**
+ * IDrmPluginListener is a listener interface for Drm events sent from an
+ * IDrmPlugin instance.
+ */
+@VintfStability
+interface IDrmPluginListener {
+    /**
+     * Legacy event sending method, it sends events of various types using a
+     * single overloaded set of parameters. This form is deprecated.
+     *
+     * @param eventType the type of the event
+     * @param sessionId identifies the session the event originated from
+     * @param data event-specific data blob
+     */
+    oneway void onEvent(in EventType eventType, in byte[] sessionId, in byte[] data);
+
+    /**
+     * Send a license expiration update to the listener. The expiration
+     * update indicates how long the current keys are valid before they
+     * need to be renewed.
+     *
+     * @param sessionId identifies the session the event originated from
+     * @param expiryTimeInMS the time when the keys need to be renewed.
+     * The time is in milliseconds, relative to the Unix epoch. A time
+     * of 0 indicates that the keys never expire.
+     */
+    oneway void onExpirationUpdate(in byte[] sessionId, in long expiryTimeInMS);
+
+    /**
+     * Send a keys change event to the listener. The keys change event
+     * indicates the status of each key in the session. Keys can be
+     * indicated as being usable, expired, outputnotallowed or statuspending.
+     *
+     * @param sessionId identifies the session the event originated from
+     * @param keyStatusList indicates the status for each key ID in the
+     * session.
+     * @param hasNewUsableKey indicates if the event includes at least one
+     * key that has become usable.
+     */
+    oneway void onKeysChange(
+            in byte[] sessionId, in KeyStatus[] keyStatusList, in boolean hasNewUsableKey);
+
+    /**
+     * Some device crypto hardware is incapable of retaining crypto
+     * session state across suspend and resume cycles. A
+     * SessionLostState event must be signaled when a session has
+     * become invalid for this reason. This event must not be used to
+     * indicate a failure in the crypto system. Closing the session
+     * and opening a new one must allow the application to resume
+     * normal use of the drm hal module.
+     *
+     * @param sessionId identifies the session that has been invalidated
+     */
+    oneway void onSessionLostState(in byte[] sessionId);
+}
diff --git a/drm/aidl/android/hardware/drm/KeyRequest.aidl b/drm/aidl/android/hardware/drm/KeyRequest.aidl
new file mode 100644
index 0000000..0c73205
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/KeyRequest.aidl
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+import android.hardware.drm.KeyRequestType;
+
+@VintfStability
+parcelable KeyRequest {
+    /** The opaque key request blob. */
+    byte[] request;
+
+    /**
+     * Enumerated type:
+     *     INITIAL - the first key request for a license
+     *     NONE - indicates that no request is needed because the keys
+     *         are already loaded
+     *     RENEWAL - is a subsequent key request used to refresh the
+     *         keys in a license
+     *     RELEASE - indicates keys are being released
+     *     UPDATE - indicates that the keys need to be refetched after
+     *         the initial license request
+     */
+    KeyRequestType requestType;
+
+    /**
+     * The URL that the request may be sent to,
+     * if provided by the drm HAL. The app can choose to
+     * override this URL. If the HAL implementation does not provide
+     * a defaultUrl, the returned string must be empty.
+     */
+    String defaultUrl;
+}
diff --git a/drm/aidl/android/hardware/drm/KeyRequestType.aidl b/drm/aidl/android/hardware/drm/KeyRequestType.aidl
new file mode 100644
index 0000000..3a603ff
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/KeyRequestType.aidl
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+/**
+ * An app determines the type of a key request returned from getKeyRequest.
+ */
+@VintfStability
+@Backing(type="int")
+enum KeyRequestType {
+    /**
+     * Key request type is for an initial license request
+     */
+    INITIAL,
+    /**
+     * Key request type is for license renewal. Renewal requests are used
+     * to extend the validity period for streaming keys.
+     */
+    RENEWAL,
+    /**
+     * Key request type is a release. A key release causes offline keys
+     * to become available for streaming.
+     */
+    RELEASE,
+    /**
+     * Key request type is unknown due to some error condition.
+     */
+    UNKNOWN,
+    /**
+     * Keys are already loaded. No key request is needed.
+     */
+    NONE,
+    /**
+     * Keys have previously been loaded. An additional (non-renewal) license
+     * request is needed.
+     */
+    UPDATE,
+}
diff --git a/drm/aidl/android/hardware/drm/KeySetId.aidl b/drm/aidl/android/hardware/drm/KeySetId.aidl
new file mode 100644
index 0000000..be0ce0e
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/KeySetId.aidl
@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+@VintfStability
+parcelable KeySetId {
+    byte[] keySetId;
+}
diff --git a/drm/aidl/android/hardware/drm/KeyStatus.aidl b/drm/aidl/android/hardware/drm/KeyStatus.aidl
new file mode 100644
index 0000000..16e042a
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/KeyStatus.aidl
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+import android.hardware.drm.KeyStatusType;
+
+/**
+ * Used by sendKeysChange to report the usability status of each key
+ * to the app.
+ */
+@VintfStability
+parcelable KeyStatus {
+    byte[] keyId;
+    KeyStatusType type;
+}
diff --git a/drm/aidl/android/hardware/drm/KeyStatusType.aidl b/drm/aidl/android/hardware/drm/KeyStatusType.aidl
new file mode 100644
index 0000000..6902d87
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/KeyStatusType.aidl
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+@VintfStability
+@Backing(type="int")
+enum KeyStatusType {
+    /**
+     * The key is currently usable to decrypt media data.
+     */
+    USABLE,
+    /**
+     * The key is no longer usable to decrypt media data because its expiration
+     * time has passed.
+     */
+    EXPIRED,
+    /**
+     * The key is not currently usable to decrypt media data because its output
+     * requirements cannot currently be met.
+     */
+    OUTPUTNOTALLOWED,
+    /**
+     * The status of the key is not yet known and is being determined.
+     */
+    STATUSPENDING,
+    /**
+     * The key is not currently usable to decrypt media data because of an
+     * internal error in processing unrelated to input parameters.
+     */
+    INTERNALERROR,
+    /**
+     * The key is not yet usable to decrypt media because the start
+     * time is in the future. The key must become usable when
+     * its start time is reached.
+     */
+    USABLEINFUTURE,
+}
diff --git a/drm/aidl/android/hardware/drm/KeyType.aidl b/drm/aidl/android/hardware/drm/KeyType.aidl
new file mode 100644
index 0000000..78b4d83
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/KeyType.aidl
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+@VintfStability
+@Backing(type="int")
+enum KeyType {
+    /**
+     * Drm keys can be for offline content or for online streaming.
+     * Offline keys are persisted on the device and may be used when the device
+     * is disconnected from the network.
+     */
+    OFFLINE,
+    /**
+     * Keys for streaming are not persisted and require the device to be
+     * connected to the network for periodic renewal.
+     */
+    STREAMING,
+    /**
+     * The Release type is used to request that offline keys be no longer
+     * restricted to offline use.
+     */
+    RELEASE,
+}
diff --git a/drm/aidl/android/hardware/drm/KeyValue.aidl b/drm/aidl/android/hardware/drm/KeyValue.aidl
new file mode 100644
index 0000000..e26781b
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/KeyValue.aidl
@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+@VintfStability
+parcelable KeyValue {
+    String key;
+    String value;
+}
diff --git a/drm/aidl/android/hardware/drm/LogMessage.aidl b/drm/aidl/android/hardware/drm/LogMessage.aidl
new file mode 100644
index 0000000..8ac1ced
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/LogMessage.aidl
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+import android.hardware.drm.LogPriority;
+
+/**
+ * Returned by getLogMessages to report error diagnostics to the
+ * app.
+ *
+ * The |message| field is for informational purposes only, and
+ * NOT meant to be parsed programmatically when handling errors.
+ * For programmatic error handling, please check the return |Status|
+ * of APIs instead.
+ */
+@VintfStability
+parcelable LogMessage {
+    /**
+     * Epoch time in milliseconds.
+     */
+    long timeMs;
+    LogPriority priority;
+    String message;
+}
diff --git a/drm/aidl/android/hardware/drm/LogPriority.aidl b/drm/aidl/android/hardware/drm/LogPriority.aidl
new file mode 100644
index 0000000..4db3b40
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/LogPriority.aidl
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+@VintfStability
+@Backing(type="int")
+enum LogPriority {
+    UNKNOWN,
+    DEFAULT,
+    VERBOSE,
+    DEBUG,
+    INFO,
+    WARN,
+    ERROR,
+    FATAL,
+}
diff --git a/drm/aidl/android/hardware/drm/Mode.aidl b/drm/aidl/android/hardware/drm/Mode.aidl
new file mode 100644
index 0000000..6fc0065
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/Mode.aidl
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+/**
+ * Enumerate the supported crypto modes
+ */
+@VintfStability
+@Backing(type="int")
+enum Mode {
+    UNENCRYPTED = 0,
+    AES_CTR = 1,
+    AES_CBC_CTS = 2,
+    AES_CBC = 3,
+}
diff --git a/drm/aidl/android/hardware/drm/NumberOfSessions.aidl b/drm/aidl/android/hardware/drm/NumberOfSessions.aidl
new file mode 100644
index 0000000..75b7c2e
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/NumberOfSessions.aidl
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+@VintfStability
+parcelable NumberOfSessions {
+    /** The number of currently opened sessions. */
+    int currentSessions;
+
+    /** The maximum number of sessions that the device can support. */
+    int maxSessions;
+}
diff --git a/drm/aidl/android/hardware/drm/OfflineLicenseState.aidl b/drm/aidl/android/hardware/drm/OfflineLicenseState.aidl
new file mode 100644
index 0000000..0f447db
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/OfflineLicenseState.aidl
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+@VintfStability
+@Backing(type="int")
+enum OfflineLicenseState {
+    /**
+     * Offline license state is unknown
+     */
+    UNKNOWN,
+    /**
+     * Offline license state is usable, the keys are usable for decryption.
+     */
+    USABLE,
+    /**
+     * Offline license state is inactive, the keys have been marked for
+     * release using {@link #getKeyRequest} with KEY_TYPE_RELEASE but the
+     * key response has not been received.
+     */
+    INACTIVE,
+}
diff --git a/drm/aidl/android/hardware/drm/OpaqueData.aidl b/drm/aidl/android/hardware/drm/OpaqueData.aidl
new file mode 100644
index 0000000..6b2a2e7
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/OpaqueData.aidl
@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+@VintfStability
+parcelable OpaqueData {
+    byte[] opaqueData;
+}
diff --git a/drm/aidl/android/hardware/drm/Pattern.aidl b/drm/aidl/android/hardware/drm/Pattern.aidl
new file mode 100644
index 0000000..88d22cf
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/Pattern.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+/**
+ * A crypto Pattern is a repeating sequence of encrypted and clear blocks
+ * occurring within the bytes indicated by mNumBytesOfEncryptedDatad bytes
+ * of a subsample. Patterns are used to reduce the CPU overhead of
+ * decrypting samples. As an example, HLS uses 1:9 patterns where every
+ * 10th block is encrypted.
+ */
+@VintfStability
+parcelable Pattern {
+    /**
+     * The number of blocks to be encrypted in the pattern. If zero,
+     * pattern encryption is inoperative.
+     */
+    int encryptBlocks;
+
+    /**
+     * The number of blocks to be skipped (left clear) in the pattern. If
+     * zero, pattern encryption is inoperative.
+     */
+    int skipBlocks;
+}
diff --git a/drm/aidl/android/hardware/drm/ProvideProvisionResponseResult.aidl b/drm/aidl/android/hardware/drm/ProvideProvisionResponseResult.aidl
new file mode 100644
index 0000000..e9f1e2b
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/ProvideProvisionResponseResult.aidl
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+@VintfStability
+parcelable ProvideProvisionResponseResult {
+    /**
+     * The public certificate resulting from the provisioning
+     * operation, if any. An empty vector indicates that no
+     * certificate was returned.
+     */
+    byte[] certificate;
+
+    /**
+     * An opaque object containing encrypted private key material
+     * to be used by signRSA when computing an RSA signature on a
+     * message, see the signRSA method.
+     */
+    byte[] wrappedKey;
+}
diff --git a/drm/aidl/android/hardware/drm/ProvisionRequest.aidl b/drm/aidl/android/hardware/drm/ProvisionRequest.aidl
new file mode 100644
index 0000000..eb42d32
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/ProvisionRequest.aidl
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+@VintfStability
+parcelable ProvisionRequest {
+    /** The opaque certificate request blob. */
+    byte[] request;
+
+    /**
+     * The URL that the provisioning request may be sent to,
+     * if known by the HAL implementation. An app can choose to
+     * override this URL. If the HAL implementation does not provide
+     * a defaultUrl, the returned string must be empty.
+     */
+    String defaultUrl;
+}
diff --git a/drm/aidl/android/hardware/drm/SecureStop.aidl b/drm/aidl/android/hardware/drm/SecureStop.aidl
new file mode 100644
index 0000000..37cfbd3
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/SecureStop.aidl
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+/**
+ * Encapsulates a secure stop opaque object.
+ */
+@VintfStability
+parcelable SecureStop {
+    byte[] opaqueData;
+}
diff --git a/drm/aidl/android/hardware/drm/SecureStopId.aidl b/drm/aidl/android/hardware/drm/SecureStopId.aidl
new file mode 100644
index 0000000..775e60b
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/SecureStopId.aidl
@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+@VintfStability
+parcelable SecureStopId {
+    byte[] secureStopId;
+}
diff --git a/drm/aidl/android/hardware/drm/SecurityLevel.aidl b/drm/aidl/android/hardware/drm/SecurityLevel.aidl
new file mode 100644
index 0000000..aac1b68
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/SecurityLevel.aidl
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+@VintfStability
+@Backing(type="int")
+enum SecurityLevel {
+    /**
+     * Unable to determine the security level
+     */
+    UNKNOWN,
+    /**
+     * Software-based whitebox crypto
+     */
+    SW_SECURE_CRYPTO,
+    /**
+     * Software-based whitebox crypto and an obfuscated decoder
+     */
+    SW_SECURE_DECODE,
+    /**
+     * DRM key management and crypto operations are performed within a
+     * hardware backed trusted execution environment
+     */
+    HW_SECURE_CRYPTO,
+    /**
+     * DRM key management, crypto operations and decoding of content
+     * are performed within a hardware backed trusted execution environment
+     */
+    HW_SECURE_DECODE,
+    /**
+     * DRM key management, crypto operations, decoding of content and all
+     * handling of the media (compressed and uncompressed) is handled within
+     * a hardware backed trusted execution environment.
+     */
+    HW_SECURE_ALL,
+    /**
+     * The default security level is defined as the highest security level
+     * supported on the device.
+     */
+    DEFAULT,
+}
diff --git a/drm/aidl/android/hardware/drm/SharedBuffer.aidl b/drm/aidl/android/hardware/drm/SharedBuffer.aidl
new file mode 100644
index 0000000..6977284
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/SharedBuffer.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+/**
+ * SharedBuffer describes a decrypt buffer which is defined by a bufferId, an
+ * offset and a size.  The offset is relative to the shared memory base for the
+ * memory region identified by bufferId, which is established by
+ * setSharedMemoryBase().
+ */
+@VintfStability
+parcelable SharedBuffer {
+    /**
+     * The unique buffer identifier
+     */
+    int bufferId;
+    /**
+     * The offset from the shared memory base
+     */
+    long offset;
+    /**
+     * The size of the shared buffer in bytes
+     */
+    long size;
+}
diff --git a/drm/aidl/android/hardware/drm/Status.aidl b/drm/aidl/android/hardware/drm/Status.aidl
new file mode 100644
index 0000000..ee57d64
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/Status.aidl
@@ -0,0 +1,221 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+@VintfStability
+@Backing(type="int")
+enum Status {
+    /**
+     * The DRM plugin must return OK when an operation completes without any
+     * errors.
+     */
+    OK,
+    /**
+     * The DRM plugin must return ERROR_DRM_NO_LICENSE, when decryption is
+     * attempted and no license keys have been provided.
+     */
+    ERROR_DRM_NO_LICENSE,
+    /**
+     * ERROR_DRM_LICENSE_EXPIRED must be returned when an attempt is made
+     * to use a license and the keys in that license have expired.
+     */
+    ERROR_DRM_LICENSE_EXPIRED,
+    /**
+     * The DRM plugin must return ERROR_DRM_SESSION_NOT_OPENED when an
+     * attempt is made to use a session that has not been opened.
+     */
+    ERROR_DRM_SESSION_NOT_OPENED,
+    /**
+     * The DRM plugin must return ERROR_DRM_CANNOT_HANDLE when an unsupported
+     * data format or operation is attempted.
+     */
+    ERROR_DRM_CANNOT_HANDLE,
+    /**
+     * ERROR_DRM_INVALID_STATE must be returned when the device is in a state
+     * where it is not able to perform decryption.
+     */
+    ERROR_DRM_INVALID_STATE,
+    /**
+     * The DRM plugin must return BAD_VALUE whenever an illegal parameter is
+     * passed to one of the interface functions.
+     */
+    BAD_VALUE,
+    /**
+     * The DRM plugin must return ERROR_DRM_NOT_PROVISIONED from getKeyRequest,
+     * openSession or provideKeyResponse when the device has not yet been
+     * provisioned.
+     */
+    ERROR_DRM_NOT_PROVISIONED,
+    /**
+     * ERROR_DRM_RESOURCE_BUSY must be returned when resources, such as drm
+     * sessions or secure buffers are not available to perform a requested
+     * operation because they are already in use.
+     */
+    ERROR_DRM_RESOURCE_BUSY,
+    /**
+     * The DRM Plugin must return ERROR_DRM_INSUFFICIENT_OUTPUT_PROTECTION
+     * when the output protection level enabled on the device is not
+     * sufficient to meet the requirements in the license policy.  HDCP is an
+     * example of a form of output protection.
+     */
+    ERROR_DRM_INSUFFICIENT_OUTPUT_PROTECTION,
+    /**
+     * The DRM Plugin must return ERROR_DRM_DEVICE_REVOKED from
+     * provideProvisionResponse and provideKeyResponse if the response indicates
+     * that the device has been revoked. Device revocation means that the device
+     * is no longer permitted to play content.
+     */
+    ERROR_DRM_DEVICE_REVOKED,
+    /**
+     * The DRM Plugin must return ERROR_DRM_DECRYPT if the CryptoPlugin
+     * decrypt operation fails.
+     */
+    ERROR_DRM_DECRYPT,
+    /**
+     * ERROR_DRM_UNKNOWN must be returned when a fatal failure occurs and no
+     * other defined error is appropriate.
+     */
+    ERROR_DRM_UNKNOWN,
+    /**
+     * The drm HAL module must return ERROR_DRM_INSUFFICIENT_SECURITY
+     * from the crypto plugin decrypt method when the security level
+     * of the device is not sufficient to meet the requirements in the
+     * license policy.
+     */
+    ERROR_DRM_INSUFFICIENT_SECURITY,
+    /**
+     * The drm HAL module must return ERROR_FRAME_TOO_LARGE from the
+     * decrypt method when the frame being decrypted into the secure
+     * output buffer exceeds the size of the buffer.
+     */
+    ERROR_DRM_FRAME_TOO_LARGE,
+    /**
+     * This error must be returned from any session method when an
+     * attempt is made to use the session after the crypto hardware
+     * state has been invalidated. Some devices are not able to
+     * retain crypto session state across device suspend/resume which
+     * results in invalid session state.
+     */
+    ERROR_DRM_SESSION_LOST_STATE,
+    /**
+     * The drm HAL module must return this error if client
+     * applications using the hal are temporarily exceeding the
+     * capacity of available crypto resources such that a retry of
+     * the operation is likely to succeed.
+     */
+    ERROR_DRM_RESOURCE_CONTENTION,
+    /**
+     * queueSecureInput buffer called with 0 subsamples.
+     */
+    CANNOT_DECRYPT_ZERO_SUBSAMPLES,
+    /**
+     * An error happened within the crypto library used by the drm plugin.
+     */
+    CRYPTO_LIBRARY_ERROR,
+    /**
+     * Non-specific error reported by the device OEM subsystem.
+     */
+    GENERAL_OEM_ERROR,
+    /**
+     * Unexpected internal failure in the drm/crypto plugin.
+     */
+    GENERAL_PLUGIN_ERROR,
+    /**
+     * The init data parameter passed to getKeyRequest is empty or invalid.
+     */
+    INIT_DATA_INVALID,
+    /**
+     * Either the key was not loaded from the license before attempting the
+     * operation, or the key ID parameter provided by the app is incorrect.
+     */
+    KEY_NOT_LOADED,
+    /**
+     * The license response was empty, fields are missing or otherwise unable
+     * to be parsed.
+     */
+    LICENSE_PARSE_ERROR,
+    /**
+     * The operation (e.g. to renew or persist a license) is prohibited by the
+     * license policy.
+     */
+    LICENSE_POLICY_ERROR,
+    /**
+     * Failed to generate a release request because a field in the stored
+     * license is empty or malformed.
+     */
+    LICENSE_RELEASE_ERROR,
+    /**
+     * The license server detected an error in the license request.
+     */
+    LICENSE_REQUEST_REJECTED,
+    /**
+     * Failed to restore an offline license because a field is empty or
+     * malformed.
+     */
+    LICENSE_RESTORE_ERROR,
+    /**
+     * License is in an invalid state for the attempted operation.
+     */
+    LICENSE_STATE_ERROR,
+    /**
+     * Certificate is malformed or is of the wrong type.
+     */
+    MALFORMED_CERTIFICATE,
+    /**
+     * Failure in the media framework.
+     */
+    MEDIA_FRAMEWORK_ERROR,
+    /**
+     * Certificate has not been set.
+     */
+    MISSING_CERTIFICATE,
+    /**
+     * There was an error loading the provisioned certificate.
+     */
+    PROVISIONING_CERTIFICATE_ERROR,
+    /**
+     * Required steps where not performed before provisioning was attempted.
+     */
+    PROVISIONING_CONFIGURATION_ERROR,
+    /**
+     * The provisioning response was empty, fields are missing or otherwise
+     * unable to be parsed.
+     */
+    PROVISIONING_PARSE_ERROR,
+    /**
+     * The provisioning server detected an error in the provisioning request.
+     */
+    PROVISIONING_REQUEST_REJECTED,
+    /**
+     * Provisioning failed in a way that is likely to succeed on a subsequent
+     * attempt.
+     */
+    RETRYABLE_PROVISIONING_ERROR,
+    /**
+     * Failed to generate a secure stop request because a field in the stored
+     * license is empty or malformed.
+     */
+    SECURE_STOP_RELEASE_ERROR,
+    /**
+     * The plugin was unable to read data from the filesystem.
+     */
+    STORAGE_READ_FAILURE,
+    /**
+     * The plugin was unable to write data to the filesystem.
+     */
+    STORAGE_WRITE_FAILURE,
+}
diff --git a/drm/aidl/android/hardware/drm/SubSample.aidl b/drm/aidl/android/hardware/drm/SubSample.aidl
new file mode 100644
index 0000000..68a8fb1
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/SubSample.aidl
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+/**
+ * A subsample consists of some number of bytes of clear (unencrypted)
+ * data followed by a number of bytes of encrypted data.
+ */
+@VintfStability
+parcelable SubSample {
+    int numBytesOfClearData;
+    int numBytesOfEncryptedData;
+}
diff --git a/drm/aidl/android/hardware/drm/Uuid.aidl b/drm/aidl/android/hardware/drm/Uuid.aidl
new file mode 100644
index 0000000..b36c409
--- /dev/null
+++ b/drm/aidl/android/hardware/drm/Uuid.aidl
@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.drm;
+
+@VintfStability
+parcelable Uuid {
+    byte[] uuid;
+}
diff --git a/dumpstate/aidl/Android.bp b/dumpstate/aidl/Android.bp
index e18eade..22d836b 100644
--- a/dumpstate/aidl/Android.bp
+++ b/dumpstate/aidl/Android.bp
@@ -34,7 +34,6 @@
             enabled: false,
         },
         ndk: {
-            separate_platform_variant: false,
             vndk: {
                 enabled: true,
             },
diff --git a/dumpstate/aidl/android/hardware/dumpstate/IDumpstateDevice.aidl b/dumpstate/aidl/android/hardware/dumpstate/IDumpstateDevice.aidl
index 3b42546..b994d04 100644
--- a/dumpstate/aidl/android/hardware/dumpstate/IDumpstateDevice.aidl
+++ b/dumpstate/aidl/android/hardware/dumpstate/IDumpstateDevice.aidl
@@ -103,8 +103,9 @@
      * @param timeoutMillis An approximate "budget" for how much time this call has been allotted.
      *     If execution runs longer than this, the IDumpstateDevice service may be killed and only
      *     partial information will be included in the report.
-     * @return If error, return service specific error with code
-     *           ERROR_UNSUPPORTED_MODE or ERROR_DEVICE_LOGGING_NOT_ENABLED
+     * @throws ServiceSpecificException with one of the following values:
+     *         |ERROR_UNSUPPORTED_MODE|,
+     *         |ERROR_DEVICE_LOGGING_NOT_ENABLED|
      */
     void dumpstateBoard(in ParcelFileDescriptor[] fd, in DumpstateMode mode, in long timeoutMillis);
 
diff --git a/gnss/1.1/vts/functional/Android.bp b/gnss/1.1/vts/functional/Android.bp
index c59d5e7..f8fad94 100644
--- a/gnss/1.1/vts/functional/Android.bp
+++ b/gnss/1.1/vts/functional/Android.bp
@@ -36,6 +36,7 @@
         "android.hardware.gnss@1.1",
         "android.hardware.gnss@2.0",
         "android.hardware.gnss@common-vts-lib",
+        "android.hardware.gnss-V2-cpp",
     ],
     shared_libs: [
         "android.hardware.gnss.measurement_corrections@1.0",
diff --git a/gnss/2.0/vts/functional/Android.bp b/gnss/2.0/vts/functional/Android.bp
index 3bbd572..2042dd9 100644
--- a/gnss/2.0/vts/functional/Android.bp
+++ b/gnss/2.0/vts/functional/Android.bp
@@ -39,6 +39,10 @@
         "android.hardware.gnss@2.0",
         "android.hardware.gnss@2.1",
         "android.hardware.gnss@common-vts-lib",
+        "android.hardware.gnss-V2-cpp",
     ],
-    test_suites: ["general-tests", "vts"],
+    test_suites: [
+        "general-tests",
+        "vts",
+    ],
 }
diff --git a/gnss/2.1/vts/functional/Android.bp b/gnss/2.1/vts/functional/Android.bp
index aaddd96..d7b6eeb 100644
--- a/gnss/2.1/vts/functional/Android.bp
+++ b/gnss/2.1/vts/functional/Android.bp
@@ -40,6 +40,7 @@
         "android.hardware.gnss@2.0",
         "android.hardware.gnss@2.1",
         "android.hardware.gnss@common-vts-lib",
+        "android.hardware.gnss-V2-cpp",
     ],
     shared_libs: [
         "libvintf",
diff --git a/gnss/aidl/Android.bp b/gnss/aidl/Android.bp
index b197eae..4d9c5cc 100644
--- a/gnss/aidl/Android.bp
+++ b/gnss/aidl/Android.bp
@@ -26,7 +26,11 @@
 aidl_interface {
     name: "android.hardware.gnss",
     vendor_available: true,
-    srcs: ["android/hardware/gnss/*.aidl"],
+    srcs: [
+        "android/hardware/gnss/*.aidl",
+        "android/hardware/gnss/measurement_corrections/*.aidl",
+        "android/hardware/gnss/visibility_control/*.aidl",
+    ],
     stability: "vintf",
     backend: {
         java: {
diff --git a/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/GnssData.aidl b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/GnssData.aidl
index ebb5d0b..aa514da 100644
--- a/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/GnssData.aidl
+++ b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/GnssData.aidl
@@ -37,4 +37,11 @@
   android.hardware.gnss.GnssMeasurement[] measurements;
   android.hardware.gnss.GnssClock clock;
   android.hardware.gnss.ElapsedRealtime elapsedRealtime;
+  @nullable android.hardware.gnss.GnssData.GnssAgc[] gnssAgcs;
+  @VintfStability
+  parcelable GnssAgc {
+    double agcLevelDb;
+    android.hardware.gnss.GnssConstellationType constellation = android.hardware.gnss.GnssConstellationType.UNKNOWN;
+    long carrierFrequencyHz;
+  }
 }
diff --git a/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IAGnss.aidl b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IAGnss.aidl
index f02e08c..1a69f33 100644
--- a/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IAGnss.aidl
+++ b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IAGnss.aidl
@@ -37,8 +37,8 @@
   void setCallback(in android.hardware.gnss.IAGnssCallback callback);
   void dataConnClosed();
   void dataConnFailed();
-  void setServer(in android.hardware.gnss.IAGnssCallback.AGnssType type, in String hostname, in int port);
-  void dataConnOpen(in long networkHandle, in String apn, in android.hardware.gnss.IAGnss.ApnIpType apnIpType);
+  void setServer(in android.hardware.gnss.IAGnssCallback.AGnssType type, in @utf8InCpp String hostname, in int port);
+  void dataConnOpen(in long networkHandle, in @utf8InCpp String apn, in android.hardware.gnss.IAGnss.ApnIpType apnIpType);
   @Backing(type="int") @VintfStability
   enum ApnIpType {
     INVALID = 0,
diff --git a/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IAGnssRil.aidl b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IAGnssRil.aidl
new file mode 100644
index 0000000..73df195
--- /dev/null
+++ b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IAGnssRil.aidl
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.gnss;
+@VintfStability
+interface IAGnssRil {
+  void setCallback(in android.hardware.gnss.IAGnssRilCallback callback);
+  void setRefLocation(in android.hardware.gnss.IAGnssRil.AGnssRefLocation agnssReflocation);
+  void setSetId(in android.hardware.gnss.IAGnssRil.SetIDType type, in @utf8InCpp String setid);
+  void updateNetworkState(in android.hardware.gnss.IAGnssRil.NetworkAttributes attributes);
+  const int NETWORK_CAPABILITY_NOT_METERED = 1;
+  const int NETWORK_CAPABILITY_NOT_ROAMING = 2;
+  @Backing(type="int") @VintfStability
+  enum AGnssRefLocationType {
+    GSM_CELLID = 1,
+    UMTS_CELLID = 2,
+    LTE_CELLID = 4,
+    NR_CELLID = 8,
+  }
+  @Backing(type="int") @VintfStability
+  enum SetIDType {
+    NONE = 0,
+    IMSI = 1,
+    MSISDM = 2,
+  }
+  @VintfStability
+  parcelable AGnssRefLocationCellID {
+    android.hardware.gnss.IAGnssRil.AGnssRefLocationType type;
+    int mcc;
+    int mnc;
+    int lac;
+    long cid;
+    int tac;
+    int pcid;
+    int arfcn;
+  }
+  @VintfStability
+  parcelable AGnssRefLocation {
+    android.hardware.gnss.IAGnssRil.AGnssRefLocationType type;
+    android.hardware.gnss.IAGnssRil.AGnssRefLocationCellID cellID;
+  }
+  @VintfStability
+  parcelable NetworkAttributes {
+    long networkHandle;
+    boolean isConnected;
+    int capabilities;
+    @utf8InCpp String apn;
+  }
+}
diff --git a/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IAGnssRilCallback.aidl b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IAGnssRilCallback.aidl
new file mode 100644
index 0000000..152b10a
--- /dev/null
+++ b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IAGnssRilCallback.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.gnss;
+@VintfStability
+interface IAGnssRilCallback {
+  void requestSetIdCb(in int setIdflag);
+  void requestRefLocCb();
+}
diff --git a/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnss.aidl b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnss.aidl
index 9df7fe5..a16d27b 100644
--- a/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnss.aidl
+++ b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnss.aidl
@@ -44,8 +44,46 @@
   @nullable android.hardware.gnss.IGnssGeofence getExtensionGnssGeofence();
   @nullable android.hardware.gnss.IGnssNavigationMessageInterface getExtensionGnssNavigationMessage();
   android.hardware.gnss.IAGnss getExtensionAGnss();
+  android.hardware.gnss.IAGnssRil getExtensionAGnssRil();
   android.hardware.gnss.IGnssDebug getExtensionGnssDebug();
+  android.hardware.gnss.visibility_control.IGnssVisibilityControl getExtensionGnssVisibilityControl();
+  void start();
+  void stop();
+  void injectTime(in long timeMs, in long timeReferenceMs, in int uncertaintyMs);
+  void injectLocation(in android.hardware.gnss.GnssLocation location);
+  void injectBestLocation(in android.hardware.gnss.GnssLocation location);
+  void deleteAidingData(in android.hardware.gnss.IGnss.GnssAidingData aidingDataFlags);
+  void setPositionMode(in android.hardware.gnss.IGnss.GnssPositionMode mode, in android.hardware.gnss.IGnss.GnssPositionRecurrence recurrence, in int minIntervalMs, in int preferredAccuracyMeters, in int preferredTimeMs, in boolean lowPowerMode);
+  android.hardware.gnss.IGnssAntennaInfo getExtensionGnssAntennaInfo();
+  @nullable android.hardware.gnss.measurement_corrections.IMeasurementCorrectionsInterface getExtensionMeasurementCorrections();
   const int ERROR_INVALID_ARGUMENT = 1;
   const int ERROR_ALREADY_INIT = 2;
   const int ERROR_GENERIC = 3;
+  @Backing(type="int") @VintfStability
+  enum GnssPositionMode {
+    STANDALONE = 0,
+    MS_BASED = 1,
+    MS_ASSISTED = 2,
+  }
+  @Backing(type="int") @VintfStability
+  enum GnssPositionRecurrence {
+    RECURRENCE_PERIODIC = 0,
+    RECURRENCE_SINGLE = 1,
+  }
+  @Backing(type="int") @VintfStability
+  enum GnssAidingData {
+    DELETE_EPHEMERIS = 1,
+    DELETE_ALMANAC = 2,
+    DELETE_POSITION = 4,
+    DELETE_TIME = 8,
+    DELETE_IONO = 16,
+    DELETE_UTC = 32,
+    DELETE_HEALTH = 64,
+    DELETE_SVDIR = 128,
+    DELETE_SVSTEER = 256,
+    DELETE_SADATA = 512,
+    DELETE_RTI = 1024,
+    DELETE_CELLDB_INFO = 32768,
+    DELETE_ALL = 65535,
+  }
 }
diff --git a/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnssAntennaInfo.aidl b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnssAntennaInfo.aidl
new file mode 100644
index 0000000..2734ac1
--- /dev/null
+++ b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnssAntennaInfo.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.gnss;
+@VintfStability
+interface IGnssAntennaInfo {
+  void setCallback(in android.hardware.gnss.IGnssAntennaInfoCallback callback);
+  void close();
+}
diff --git a/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnssAntennaInfoCallback.aidl b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnssAntennaInfoCallback.aidl
new file mode 100644
index 0000000..ada9707
--- /dev/null
+++ b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnssAntennaInfoCallback.aidl
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.gnss;
+@VintfStability
+interface IGnssAntennaInfoCallback {
+  void gnssAntennaInfoCb(in android.hardware.gnss.IGnssAntennaInfoCallback.GnssAntennaInfo[] gnssAntennaInfos);
+  @VintfStability
+  parcelable Row {
+    double[] row;
+  }
+  @VintfStability
+  parcelable Coord {
+    double x;
+    double xUncertainty;
+    double y;
+    double yUncertainty;
+    double z;
+    double zUncertainty;
+  }
+  @VintfStability
+  parcelable GnssAntennaInfo {
+    long carrierFrequencyHz;
+    android.hardware.gnss.IGnssAntennaInfoCallback.Coord phaseCenterOffsetCoordinateMillimeters;
+    android.hardware.gnss.IGnssAntennaInfoCallback.Row[] phaseCenterVariationCorrectionMillimeters;
+    android.hardware.gnss.IGnssAntennaInfoCallback.Row[] phaseCenterVariationCorrectionUncertaintyMillimeters;
+    android.hardware.gnss.IGnssAntennaInfoCallback.Row[] signalGainCorrectionDbi;
+    android.hardware.gnss.IGnssAntennaInfoCallback.Row[] signalGainCorrectionUncertaintyDbi;
+  }
+}
diff --git a/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnssBatching.aidl b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnssBatching.aidl
index 492edc3..e1beed3 100644
--- a/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnssBatching.aidl
+++ b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnssBatching.aidl
@@ -36,9 +36,15 @@
 interface IGnssBatching {
   void init(in android.hardware.gnss.IGnssBatchingCallback callback);
   int getBatchSize();
-  void start(in long periodNanos, in int flags);
+  void start(in android.hardware.gnss.IGnssBatching.Options options);
   void flush();
   void stop();
   void cleanup();
   const int WAKEUP_ON_FIFO_FULL = 1;
+  @VintfStability
+  parcelable Options {
+    long periodNanos;
+    float minDistanceMeters;
+    int flags;
+  }
 }
diff --git a/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnssCallback.aidl b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnssCallback.aidl
index fb0931c..957a75f 100644
--- a/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnssCallback.aidl
+++ b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnssCallback.aidl
@@ -35,8 +35,60 @@
 @VintfStability
 interface IGnssCallback {
   void gnssSetCapabilitiesCb(in int capabilities);
+  void gnssStatusCb(in android.hardware.gnss.IGnssCallback.GnssStatusValue status);
+  void gnssSvStatusCb(in android.hardware.gnss.IGnssCallback.GnssSvInfo[] svInfoList);
+  void gnssLocationCb(in android.hardware.gnss.GnssLocation location);
+  void gnssNmeaCb(in long timestamp, in @utf8InCpp String nmea);
+  void gnssAcquireWakelockCb();
+  void gnssReleaseWakelockCb();
+  void gnssSetSystemInfoCb(in android.hardware.gnss.IGnssCallback.GnssSystemInfo info);
+  void gnssRequestTimeCb();
+  void gnssRequestLocationCb(in boolean independentFromGnss, in boolean isUserEmergency);
+  const int CAPABILITY_SCHEDULING = 1;
+  const int CAPABILITY_MSB = 2;
+  const int CAPABILITY_MSA = 4;
+  const int CAPABILITY_SINGLE_SHOT = 8;
+  const int CAPABILITY_ON_DEMAND_TIME = 16;
+  const int CAPABILITY_GEOFENCING = 32;
+  const int CAPABILITY_MEASUREMENTS = 64;
+  const int CAPABILITY_NAV_MESSAGES = 128;
+  const int CAPABILITY_LOW_POWER_MODE = 256;
   const int CAPABILITY_SATELLITE_BLOCKLIST = 512;
+  const int CAPABILITY_MEASUREMENT_CORRECTIONS = 1024;
+  const int CAPABILITY_ANTENNA_INFO = 2048;
   const int CAPABILITY_CORRELATION_VECTOR = 4096;
   const int CAPABILITY_SATELLITE_PVT = 8192;
   const int CAPABILITY_MEASUREMENT_CORRECTIONS_FOR_DRIVING = 16384;
+  @Backing(type="int") @VintfStability
+  enum GnssStatusValue {
+    NONE = 0,
+    SESSION_BEGIN = 1,
+    SESSION_END = 2,
+    ENGINE_ON = 3,
+    ENGINE_OFF = 4,
+  }
+  @Backing(type="int") @VintfStability
+  enum GnssSvFlags {
+    NONE = 0,
+    HAS_EPHEMERIS_DATA = 1,
+    HAS_ALMANAC_DATA = 2,
+    USED_IN_FIX = 4,
+    HAS_CARRIER_FREQUENCY = 8,
+  }
+  @VintfStability
+  parcelable GnssSvInfo {
+    int svid;
+    android.hardware.gnss.GnssConstellationType constellation;
+    float cN0Dbhz;
+    float basebandCN0DbHz;
+    float elevationDegrees;
+    float azimuthDegrees;
+    long carrierFrequencyHz;
+    int svFlag;
+  }
+  @VintfStability
+  parcelable GnssSystemInfo {
+    int yearOfHw;
+    @utf8InCpp String name;
+  }
 }
diff --git a/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnssMeasurementInterface.aidl b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnssMeasurementInterface.aidl
index 24d6f9c..9c4a54b 100644
--- a/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnssMeasurementInterface.aidl
+++ b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/IGnssMeasurementInterface.aidl
@@ -36,4 +36,11 @@
 interface IGnssMeasurementInterface {
   void setCallback(in android.hardware.gnss.IGnssMeasurementCallback callback, in boolean enableFullTracking, in boolean enableCorrVecOutputs);
   void close();
+  void setCallbackWithOptions(in android.hardware.gnss.IGnssMeasurementCallback callback, in android.hardware.gnss.IGnssMeasurementInterface.Options options);
+  @VintfStability
+  parcelable Options {
+    boolean enableFullTracking;
+    boolean enableCorrVecOutputs;
+    int intervalMs;
+  }
 }
diff --git a/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/measurement_corrections/IMeasurementCorrectionsCallback.aidl b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/measurement_corrections/IMeasurementCorrectionsCallback.aidl
new file mode 100644
index 0000000..c4cf13f
--- /dev/null
+++ b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/measurement_corrections/IMeasurementCorrectionsCallback.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.gnss.measurement_corrections;
+@VintfStability
+interface IMeasurementCorrectionsCallback {
+  void setCapabilitiesCb(in int capabilities);
+  const int CAPABILITY_LOS_SATS = 1;
+  const int CAPABILITY_EXCESS_PATH_LENGTH = 2;
+  const int CAPABILITY_REFLECTING_PLANE = 4;
+}
diff --git a/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/measurement_corrections/IMeasurementCorrectionsInterface.aidl b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/measurement_corrections/IMeasurementCorrectionsInterface.aidl
new file mode 100644
index 0000000..5dc5596
--- /dev/null
+++ b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/measurement_corrections/IMeasurementCorrectionsInterface.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.gnss.measurement_corrections;
+@VintfStability
+interface IMeasurementCorrectionsInterface {
+  void setCorrections(in android.hardware.gnss.measurement_corrections.MeasurementCorrections corrections);
+  void setCallback(in android.hardware.gnss.measurement_corrections.IMeasurementCorrectionsCallback callback);
+}
diff --git a/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/measurement_corrections/MeasurementCorrections.aidl b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/measurement_corrections/MeasurementCorrections.aidl
new file mode 100644
index 0000000..f32c8c2
--- /dev/null
+++ b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/measurement_corrections/MeasurementCorrections.aidl
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.gnss.measurement_corrections;
+@VintfStability
+parcelable MeasurementCorrections {
+  double latitudeDegrees;
+  double longitudeDegrees;
+  double altitudeMeters;
+  double horizontalPositionUncertaintyMeters;
+  double verticalPositionUncertaintyMeters;
+  long toaGpsNanosecondsOfWeek;
+  android.hardware.gnss.measurement_corrections.SingleSatCorrection[] satCorrections;
+  boolean hasEnvironmentBearing;
+  float environmentBearingDegrees;
+  float environmentBearingUncertaintyDegrees;
+}
diff --git a/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/measurement_corrections/ReflectingPlane.aidl b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/measurement_corrections/ReflectingPlane.aidl
new file mode 100644
index 0000000..90c3818
--- /dev/null
+++ b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/measurement_corrections/ReflectingPlane.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.gnss.measurement_corrections;
+@VintfStability
+parcelable ReflectingPlane {
+  double latitudeDegrees;
+  double longitudeDegrees;
+  double altitudeMeters;
+  double azimuthDegrees;
+}
diff --git a/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/measurement_corrections/SingleSatCorrection.aidl b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/measurement_corrections/SingleSatCorrection.aidl
new file mode 100644
index 0000000..d18c1a7
--- /dev/null
+++ b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/measurement_corrections/SingleSatCorrection.aidl
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.gnss.measurement_corrections;
+@VintfStability
+parcelable SingleSatCorrection {
+  int singleSatCorrectionFlags;
+  android.hardware.gnss.GnssConstellationType constellation;
+  int svid;
+  long carrierFrequencyHz;
+  float probSatIsLos;
+  float excessPathLengthMeters;
+  float excessPathLengthUncertaintyMeters;
+  android.hardware.gnss.measurement_corrections.ReflectingPlane reflectingPlane;
+  const int SINGLE_SAT_CORRECTION_HAS_SAT_IS_LOS_PROBABILITY = 1;
+  const int SINGLE_SAT_CORRECTION_HAS_EXCESS_PATH_LENGTH = 2;
+  const int SINGLE_SAT_CORRECTION_HAS_EXCESS_PATH_LENGTH_UNC = 4;
+  const int SINGLE_SAT_CORRECTION_HAS_REFLECTING_PLANE = 8;
+}
diff --git a/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/visibility_control/IGnssVisibilityControl.aidl b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/visibility_control/IGnssVisibilityControl.aidl
new file mode 100644
index 0000000..f674099
--- /dev/null
+++ b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/visibility_control/IGnssVisibilityControl.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.gnss.visibility_control;
+@VintfStability
+interface IGnssVisibilityControl {
+  void enableNfwLocationAccess(in @utf8InCpp String[] proxyApps);
+  void setCallback(in android.hardware.gnss.visibility_control.IGnssVisibilityControlCallback callback);
+}
diff --git a/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/visibility_control/IGnssVisibilityControlCallback.aidl b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/visibility_control/IGnssVisibilityControlCallback.aidl
new file mode 100644
index 0000000..37e1886
--- /dev/null
+++ b/gnss/aidl/aidl_api/android.hardware.gnss/current/android/hardware/gnss/visibility_control/IGnssVisibilityControlCallback.aidl
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.gnss.visibility_control;
+@VintfStability
+interface IGnssVisibilityControlCallback {
+  void nfwNotifyCb(in android.hardware.gnss.visibility_control.IGnssVisibilityControlCallback.NfwNotification notification);
+  boolean isInEmergencySession();
+  @Backing(type="int") @VintfStability
+  enum NfwProtocolStack {
+    CTRL_PLANE = 0,
+    SUPL = 1,
+    IMS = 10,
+    SIM = 11,
+    OTHER_PROTOCOL_STACK = 100,
+  }
+  @Backing(type="int") @VintfStability
+  enum NfwRequestor {
+    CARRIER = 0,
+    OEM = 10,
+    MODEM_CHIPSET_VENDOR = 11,
+    GNSS_CHIPSET_VENDOR = 12,
+    OTHER_CHIPSET_VENDOR = 13,
+    AUTOMOBILE_CLIENT = 20,
+    OTHER_REQUESTOR = 100,
+  }
+  @Backing(type="int") @VintfStability
+  enum NfwResponseType {
+    REJECTED = 0,
+    ACCEPTED_NO_LOCATION_PROVIDED = 1,
+    ACCEPTED_LOCATION_PROVIDED = 2,
+  }
+  @VintfStability
+  parcelable NfwNotification {
+    String proxyAppPackageName;
+    android.hardware.gnss.visibility_control.IGnssVisibilityControlCallback.NfwProtocolStack protocolStack;
+    String otherProtocolStackName;
+    android.hardware.gnss.visibility_control.IGnssVisibilityControlCallback.NfwRequestor requestor;
+    String requestorId;
+    android.hardware.gnss.visibility_control.IGnssVisibilityControlCallback.NfwResponseType responseType;
+    boolean inEmergencyMode;
+    boolean isCachedLocation;
+  }
+}
diff --git a/gnss/aidl/android/hardware/gnss/GnssData.aidl b/gnss/aidl/android/hardware/gnss/GnssData.aidl
index ed30c98..204eb65 100644
--- a/gnss/aidl/android/hardware/gnss/GnssData.aidl
+++ b/gnss/aidl/android/hardware/gnss/GnssData.aidl
@@ -18,6 +18,7 @@
 
 import android.hardware.gnss.ElapsedRealtime;
 import android.hardware.gnss.GnssClock;
+import android.hardware.gnss.GnssConstellationType;
 import android.hardware.gnss.GnssMeasurement;
 
 /**
@@ -41,4 +42,55 @@
      * clock.
      */
     ElapsedRealtime elapsedRealtime;
-}
\ No newline at end of file
+
+    /**
+     * Represents a reading of GNSS AGC value of a constellation type and a frequency band.
+     */
+    @VintfStability
+    parcelable GnssAgc {
+        /**
+         * Automatic gain control (AGC) level. AGC acts as a variable gain amplifier adjusting the
+         * power of the incoming signal. The AGC level may be used to indicate potential
+         * interference. Higher gain (and/or lower input power) must be output as a positive number.
+         * Hence in cases of strong jamming, in the band of this signal, this value must go more
+         * negative. This value must be consistent given the same level of the incoming signal
+         * power.
+         *
+         * Note: Different hardware designs (e.g. antenna, pre-amplification, or other RF HW
+         * components) may also affect the typical output of this value on any given hardware design
+         * in an open sky test - the important aspect of this output is that changes in this value
+         * are indicative of changes on input signal power in the frequency band for this
+         * measurement.
+         */
+        double agcLevelDb;
+
+        /**
+         * Constellation type of the SV that transmits the signal.
+         */
+        GnssConstellationType constellation = GnssConstellationType.UNKNOWN;
+
+        /**
+         * Carrier frequency of the signal tracked, for example it can be the
+         * GPS central frequency for L1 = 1575.45 MHz, or L2 = 1227.60 MHz, L5 =
+         * 1176.45 MHz, varying GLO channels, etc. If the field is not set, it
+         * is the primary common use central frequency, e.g. L1 = 1575.45 MHz
+         * for GPS.
+         *
+         * For an L1, L5 receiver tracking a satellite on L1 and L5 at the same
+         * time, two raw measurement structs must be reported for this same
+         * satellite, in one of the measurement structs, all the values related
+         * to L1 must be filled, and in the other all of the values related to
+         * L5 must be filled.
+         */
+        long carrierFrequencyHz;
+    }
+
+    /**
+     * The array of GNSS AGC values.
+     *
+     * This field must be reported when the GNSS measurement engine is running, even when the
+     * GnssMeasurement or GnssClock fields are not reported yet. E.g., when a GNSS signal is too
+     * weak to be acquired, the AGC value must still be reported.
+     */
+    @nullable GnssAgc[] gnssAgcs;
+}
diff --git a/gnss/aidl/android/hardware/gnss/IAGnss.aidl b/gnss/aidl/android/hardware/gnss/IAGnss.aidl
index 3e256e2..30b2167 100644
--- a/gnss/aidl/android/hardware/gnss/IAGnss.aidl
+++ b/gnss/aidl/android/hardware/gnss/IAGnss.aidl
@@ -60,7 +60,7 @@
      * @param hostname Hostname of the AGNSS server.
      * @param port Port number associated with the server.
      */
-    void setServer(in AGnssType type, in String hostname, in int port);
+    void setServer(in AGnssType type, in @utf8InCpp String hostname, in int port);
 
     /**
      * Notifies GNSS that a data connection is available and sets the network handle,
@@ -75,5 +75,6 @@
      * @param apn Access Point Name (follows regular APN naming convention).
      * @param apnIpType Specifies IP type of APN.
      */
-    void dataConnOpen(in long networkHandle, in String apn, in ApnIpType apnIpType);
+    void dataConnOpen(
+            in long networkHandle, in @utf8InCpp String apn, in ApnIpType apnIpType);
 }
diff --git a/gnss/aidl/android/hardware/gnss/IAGnssRil.aidl b/gnss/aidl/android/hardware/gnss/IAGnssRil.aidl
new file mode 100644
index 0000000..c506b04
--- /dev/null
+++ b/gnss/aidl/android/hardware/gnss/IAGnssRil.aidl
@@ -0,0 +1,166 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.gnss;
+
+import android.hardware.gnss.IAGnssRilCallback;
+import android.hardware.gnss.IAGnssRilCallback.SetIDType;
+
+/**
+ * Extended interface for AGNSS RIL support. An Assisted GNSS Radio Interface
+ * Layer interface allows the GNSS chipset to request radio interface layer
+ * information from Android platform. Examples of such information are reference
+ * location, unique subscriber ID, phone number string and network availability changes.
+ */
+@VintfStability
+interface IAGnssRil {
+    /** Network capability mode bitmask for not metered. */
+    const int NETWORK_CAPABILITY_NOT_METERED = 0x01;
+
+    /** Network capability mode bitmask for not roaming. */
+    const int NETWORK_CAPABILITY_NOT_ROAMING = 0x02;
+
+    /** AGNSS reference location type */
+    @VintfStability
+    @Backing(type="int")
+    enum AGnssRefLocationType {
+        GSM_CELLID = 1,
+        UMTS_CELLID = 2,
+        LTE_CELLID = 4,
+        NR_CELLID = 8,
+    }
+
+    /** SET ID type*/
+    @VintfStability
+    @Backing(type="int")
+    enum SetIDType {
+        NONE = 0,
+        IMSI = 1,
+        MSISDM = 2,
+    }
+
+    /**
+     * CellID for 2G, 3G ,LTE and NR used in AGNSS. This is defined in
+     * UserPlane Location Protocol (Version 2.0.4).
+     */
+    @VintfStability
+    parcelable AGnssRefLocationCellID {
+        AGnssRefLocationType type;
+
+        /** Mobile Country Code. */
+        int mcc;
+
+        /** Mobile Network Code .*/
+        int mnc;
+
+        /**
+         * Location Area Code in 2G, 3G and LTE. In 3G lac is discarded. In LTE,
+         * lac is populated with tac, to ensure that we don't break old clients that
+         * might rely on the old (wrong) behavior.
+         */
+        int lac;
+
+        /**
+         *  Cell id in 2G. Utran Cell id in 3G. Cell Global Id EUTRA in LTE.
+         *  Cell Global Id NR in 5G.
+         */
+        long cid;
+
+        /** Tracking Area Code in LTE and NR. */
+        int tac;
+
+        /** Physical Cell id in LTE and NR (not used in 2G and 3G) */
+        int pcid;
+
+        /** Absolute Radio Frequency Channel Number in NR. */
+        int arfcn;
+    }
+
+    /** Represents ref locations */
+    @VintfStability
+    parcelable AGnssRefLocation {
+        AGnssRefLocationType type;
+
+        AGnssRefLocationCellID cellID;
+    }
+
+    /** Represents network connection status and capabilities. */
+    @VintfStability
+    parcelable NetworkAttributes {
+        /** Network handle of the network for use with the NDK API. */
+        long networkHandle;
+
+        /**
+         * True indicates that network connectivity exists and it is possible to
+         * establish connections and pass data. If false, only the networkHandle field
+         * is populated to indicate that this network has just disconnected.
+         */
+        boolean isConnected;
+
+        /**
+         * A bitfield of flags indicating the capabilities of this network. The bit masks are
+         * defined in NETWORK_CAPABILITY_*.
+         */
+        int capabilities;
+
+        /**
+         * Telephony preferred Access Point Name to use for carrier data connection when
+         * connected to a cellular network. Empty string, otherwise.
+         */
+        @utf8InCpp String apn;
+    }
+
+    /**
+     * Opens the AGNSS interface and provides the callback routines
+     * to the implementation of this interface.
+     *
+     * @param callback Interface for AGnssRil callbacks.
+     *
+     */
+    void setCallback(in IAGnssRilCallback callback);
+
+    /**
+     * Sets the reference location.
+     *
+     * @param agnssReflocation AGNSS reference location CellID.
+     *
+     */
+    void setRefLocation(in AGnssRefLocation agnssReflocation);
+
+    /**
+     * Sets the SET ID.
+     *
+     * @param type Must be populated with either IMSI or MSISDN or NONE.
+     * @param setid If type is IMSI then setid is populated with
+     * a string representing the unique Subscriber ID, for example, the IMSI for
+     * a GMS phone. If type is MSISDN, then setid must contain
+     * the phone number string for line 1. For example, the MSISDN for a GSM phone.
+     * If the type is NONE, then the string must be empty.
+     *
+     */
+    void setSetId(in SetIDType type, in @utf8InCpp String setid);
+
+    /**
+     * Notifies GNSS of network status changes.
+     *
+     * The framework calls this method to update the GNSS HAL implementation of network
+     * state changes.
+     *
+     * @param attributes Updated network attributes.
+     *
+     */
+    void updateNetworkState(in NetworkAttributes attributes);
+}
diff --git a/gnss/aidl/android/hardware/gnss/IAGnssRilCallback.aidl b/gnss/aidl/android/hardware/gnss/IAGnssRilCallback.aidl
new file mode 100644
index 0000000..6fb093e
--- /dev/null
+++ b/gnss/aidl/android/hardware/gnss/IAGnssRilCallback.aidl
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.gnss;
+
+/**
+ * Callback for IAGnssRil interface. Used to request SET ID and
+ * Reference Location.
+ */
+@VintfStability
+interface IAGnssRilCallback {
+    /**
+     * The Hal uses this API to request a SET ID.
+     *
+     * @param setIdflag A bitfield of IAGnssRil.SetIDType that is required by
+     * the HAL. The framework will inject an empty SET ID if the flag is NONE.
+     *
+     */
+    void requestSetIdCb(in int setIdflag);
+
+    /**
+     * The Hal uses this API to request a reference location.
+     */
+    void requestRefLocCb();
+}
diff --git a/gnss/aidl/android/hardware/gnss/IGnss.aidl b/gnss/aidl/android/hardware/gnss/IGnss.aidl
index 2751521..99f2ee4 100644
--- a/gnss/aidl/android/hardware/gnss/IGnss.aidl
+++ b/gnss/aidl/android/hardware/gnss/IGnss.aidl
@@ -16,7 +16,10 @@
 
 package android.hardware.gnss;
 
+import android.hardware.gnss.GnssLocation;
 import android.hardware.gnss.IAGnss;
+import android.hardware.gnss.IAGnssRil;
+import android.hardware.gnss.IGnssAntennaInfo;
 import android.hardware.gnss.IGnssBatching;
 import android.hardware.gnss.IGnssCallback;
 import android.hardware.gnss.IGnssConfiguration;
@@ -26,6 +29,8 @@
 import android.hardware.gnss.IGnssNavigationMessageInterface;
 import android.hardware.gnss.IGnssPowerIndication;
 import android.hardware.gnss.IGnssPsds;
+import android.hardware.gnss.measurement_corrections.IMeasurementCorrectionsInterface;
+import android.hardware.gnss.visibility_control.IGnssVisibilityControl;
 
 /**
  * Represents the standard GNSS (Global Navigation Satellite System) interface.
@@ -44,6 +49,53 @@
     /** Any other error. */
     const int ERROR_GENERIC = 3;
 
+    /** Requested operational mode for GNSS operation. */
+    @VintfStability
+    @Backing(type="int")
+    enum GnssPositionMode {
+        /** Mode for running GNSS standalone (no assistance). */
+        STANDALONE = 0,
+        /** AGNSS MS-Based mode. */
+        MS_BASED = 1,
+        /**
+         * AGNSS MS-Assisted mode. This mode is not maintained by the platform anymore.
+         * It is strongly recommended to use MS_BASED instead.
+         */
+        MS_ASSISTED = 2,
+    }
+
+    /** Requested recurrence mode for GNSS operation. */
+    @VintfStability
+    @Backing(type="int")
+    enum GnssPositionRecurrence {
+        /** Receive GNSS fixes on a recurring basis at a specified period. */
+        RECURRENCE_PERIODIC = 0,
+        /** Request a single shot GNSS fix. */
+        RECURRENCE_SINGLE = 1,
+    }
+
+    /**
+     * Flags used to specify which aiding data to delete when calling
+     * deleteAidingData().
+     */
+    @VintfStability
+    @Backing(type="int")
+    enum GnssAidingData {
+        DELETE_EPHEMERIS = 0x0001,
+        DELETE_ALMANAC = 0x0002,
+        DELETE_POSITION = 0x0004,
+        DELETE_TIME = 0x0008,
+        DELETE_IONO = 0x0010,
+        DELETE_UTC = 0x0020,
+        DELETE_HEALTH = 0x0040,
+        DELETE_SVDIR = 0x0080,
+        DELETE_SVSTEER = 0x0100,
+        DELETE_SADATA = 0x0200,
+        DELETE_RTI = 0x0400,
+        DELETE_CELLDB_INFO = 0x8000,
+        DELETE_ALL = 0xFFFF
+    }
+
     /**
      * Opens the interface and provides the callback routines to the implementation of this
      * interface.
@@ -137,6 +189,13 @@
     IAGnss getExtensionAGnss();
 
     /**
+     * This method returns the IAGnssRil interface.
+     *
+     * @return The IAGnssRil interface.
+     */
+    IAGnssRil getExtensionAGnssRil();
+
+    /**
      * This method returns the IGnssDebug interface.
      *
      * This method must return non-null.
@@ -144,4 +203,102 @@
      * @return Handle to the IGnssDebug interface.
      */
     IGnssDebug getExtensionGnssDebug();
+
+    /**
+     * This method returns the IGnssVisibilityControl.
+     *
+     * @return Handle to the IGnssVisibilityControl.
+     */
+    IGnssVisibilityControl getExtensionGnssVisibilityControl();
+
+    /**
+     * Starts a location output stream using the IGnssCallback gnssLocationCb(), following the
+     * settings from the most recent call to setPositionMode().
+     *
+     * This output must operate independently of any GNSS location batching operations,
+     * see the IGnssBatching for details.
+     */
+    void start();
+
+    /**
+     * Stops the location output stream.
+     */
+    void stop();
+
+    /**
+     * Injects the current time.
+     *
+     * @param timeMs This is the UTC time received from the NTP server, its value is given in
+     *     milliseconds since January 1, 1970.
+     * @param timeReferenceMs The corresponding value of SystemClock.elapsedRealtime() from the
+     *     device when the NTP response was received in milliseconds.
+     * @param uncertaintyMs Uncertainty associated with the value represented by time. Represented
+     *     in milliseconds.
+     */
+    void injectTime(in long timeMs, in long timeReferenceMs, in int uncertaintyMs);
+
+    /**
+     * Injects current location from another (typically network) location provider.
+     *
+     * @param location Current location from the location provider
+     */
+    void injectLocation(in GnssLocation location);
+
+    /**
+     * Injects current location from the best available location provider.
+     *
+     * Unlike injectLocation, this method may inject a recent GNSS location from the HAL
+     * implementation, if that is the best available location known to the framework.
+     *
+     * @param location Location information from the best available location provider.
+     */
+    void injectBestLocation(in GnssLocation location);
+
+    /**
+     * Specifies that the next call to start will not use the information defined in the flags.
+     * GnssAidingData value of DELETE_ALL is passed for a cold start.
+     *
+     * @param aidingDataFlags Flags specifying the aiding data to be deleted.
+     */
+    void deleteAidingData(in GnssAidingData aidingDataFlags);
+
+    /**
+     * Sets the GnssPositionMode parameter, its associated recurrence value, the time between fixes,
+     * requested fix accuracy, time to first fix.
+     *
+     * @param mode Parameter must be one of MS_BASED or STANDALONE. It is allowed by the platform
+     *     (and it is recommended) to fallback to MS_BASED if MS_ASSISTED is passed in, and MS_BASED
+     *     is supported.
+     * @param recurrence GNSS position recurrence value, either periodic or single.
+     * @param minIntervalMs Represents the time between fixes in milliseconds.
+     * @param preferredAccuracyMeters Represents the requested fix accuracy in meters.
+     * @param preferredTimeMs Represents the requested time to first fix in milliseconds.
+     * @param lowPowerMode When true, and IGnss is the only client to the GNSS hardware, the GNSS
+     *     hardware must make strong tradeoffs to substantially restrict power use. Specifically, in
+     *     the case of a several second long minIntervalMs, the GNSS hardware must not, on average,
+     *     run power hungry operations like RF and signal searches for more than one second per
+     *     interval, and must make exactly one call to gnssSvStatusCb(), and either zero or one call
+     *     to GnssLocationCb() at each interval. When false, HAL must operate in the nominal mode
+     *     and is expected to make power and performance tradoffs such as duty-cycling when signal
+     *     conditions are good and more active searches to reacquire GNSS signals when no signals
+     *     are present. When there are additional clients using the GNSS hardware other than IGnss,
+     *     the GNSS hardware may operate in a higher power mode, on behalf of those clients.
+     */
+    void setPositionMode(in GnssPositionMode mode, in GnssPositionRecurrence recurrence,
+            in int minIntervalMs, in int preferredAccuracyMeters, in int preferredTimeMs,
+            in boolean lowPowerMode);
+
+    /*
+     * This method returns the IGnssAntennaInfo.
+     *
+     * @return Handle to the IGnssAntennaInfo.
+     */
+    IGnssAntennaInfo getExtensionGnssAntennaInfo();
+
+    /**
+     * This method returns the IMeasurementCorrectionsInterface.
+     *
+     * @return Handle to the IMeasurementCorrectionsInterface.
+     */
+    @nullable IMeasurementCorrectionsInterface getExtensionMeasurementCorrections();
 }
diff --git a/gnss/aidl/android/hardware/gnss/IGnssAntennaInfo.aidl b/gnss/aidl/android/hardware/gnss/IGnssAntennaInfo.aidl
new file mode 100644
index 0000000..de83b67
--- /dev/null
+++ b/gnss/aidl/android/hardware/gnss/IGnssAntennaInfo.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.gnss;
+
+import android.hardware.gnss.IGnssAntennaInfoCallback;
+
+/**
+ * Extended interface for GNSS antenna information support.
+ */
+@VintfStability
+interface IGnssAntennaInfo {
+    /**
+     * Registers the callback routines with the HAL.
+     *
+     * @param callback Handle to the GnssAntennaInfo callback interface.
+     */
+    void setCallback(in IGnssAntennaInfoCallback callback);
+
+    /**
+     * Stops updates from the HAL, and unregisters the callback routines.
+     * After a call to close(), the previously registered callbacks must be
+     * considered invalid by the HAL.
+     * If close() is invoked without a previous setCallback, this function must perform
+     * no work.
+     */
+    void close();
+}
diff --git a/gnss/aidl/android/hardware/gnss/IGnssAntennaInfoCallback.aidl b/gnss/aidl/android/hardware/gnss/IGnssAntennaInfoCallback.aidl
new file mode 100644
index 0000000..ef0a7fc
--- /dev/null
+++ b/gnss/aidl/android/hardware/gnss/IGnssAntennaInfoCallback.aidl
@@ -0,0 +1,140 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.gnss;
+
+/**
+ * The callback interface to report GNSS antenna information from the HAL.
+ */
+@VintfStability
+interface IGnssAntennaInfoCallback {
+    /**
+     * A row of doubles. This is used to represent a row in a 2D array, which are used to
+     * characterize the phase center variation corrections and signal gain corrections.
+     */
+    @VintfStability
+    parcelable Row {
+        double[] row;
+    }
+
+    /**
+     * A point in 3D space, with associated uncertainty.
+     */
+    @VintfStability
+    parcelable Coord {
+        double x;
+
+        double xUncertainty;
+
+        double y;
+
+        double yUncertainty;
+
+        double z;
+
+        double zUncertainty;
+    }
+
+    @VintfStability
+    parcelable GnssAntennaInfo {
+        /**
+         * The carrier frequency in Hz.
+         */
+        long carrierFrequencyHz;
+
+        /**
+         * Phase center offset (PCO) with associated 1-sigma uncertainty. PCO is defined with
+         * respect to the origin of the Android sensor coordinate system, e.g., center of primary
+         * screen for mobiles - see sensor or form factor documents for details.
+         */
+        Coord phaseCenterOffsetCoordinateMillimeters;
+
+        /**
+         * 2D vectors representing the phase center variation (PCV) corrections, in
+         * millimeters, at regularly spaced azimuthal angle (theta) and zenith angle
+         * (phi). The PCV correction is added to the phase measurement to obtain the
+         * corrected value.
+         *
+         * The azimuthal angle, theta, is defined with respect to the X axis of the
+         * Android sensor coordinate system, increasing toward the Y axis. The zenith
+         * angle, phi, is defined with respect to the Z axis of the Android Sensor
+         * coordinate system, increasing toward the X-Y plane.
+         *
+         * Each row vector (outer vectors) represents a fixed theta. The first row
+         * corresponds to a theta angle of 0 degrees. The last row corresponds to a
+         * theta angle of (360 - deltaTheta) degrees, where deltaTheta is the regular
+         * spacing between azimuthal angles, i.e., deltaTheta = 360 / (number of rows).
+         *
+         * The columns (inner vectors) represent fixed zenith angles, beginning at 0
+         * degrees and ending at 180 degrees. They are separated by deltaPhi, the regular
+         * spacing between zenith angles, i.e., deltaPhi = 180 / (number of columns - 1).
+         *
+         * This field is optional, i.e., an empty vector.
+         */
+        Row[] phaseCenterVariationCorrectionMillimeters;
+
+        /**
+         * 2D vectors of 1-sigma uncertainty in millimeters associated with the PCV
+         * correction values.
+         *
+         * This field is optional, i.e., an empty vector.
+         */
+        Row[] phaseCenterVariationCorrectionUncertaintyMillimeters;
+
+        /**
+         * 2D vectors representing the signal gain corrections at regularly spaced
+         * azimuthal angle (theta) and zenith angle (phi). The values are calculated or
+         * measured at the antenna feed point without considering the radio and receiver
+         * noise figure and path loss contribution, in dBi, i.e., decibel over isotropic
+         * antenna with the same total power. The signal gain correction is added the
+         * signal gain measurement to obtain the corrected value.
+         *
+         * The azimuthal angle, theta, is defined with respect to the X axis of the
+         * Android sensor coordinate system, increasing toward the Y axis. The zenith
+         * angle, phi, is defined with respect to the Z axis of the Android Sensor
+         * coordinate system, increasing toward the X-Y plane.
+         *
+         * Each row vector (outer vectors) represents a fixed theta. The first row
+         * corresponds to a theta angle of 0 degrees. The last row corresponds to a
+         * theta angle of (360 - deltaTheta) degrees, where deltaTheta is the regular
+         * spacing between azimuthal angles, i.e., deltaTheta = 360 / (number of rows).
+         *
+         * The columns (inner vectors) represent fixed zenith angles, beginning at 0
+         * degrees and ending at 180 degrees. They are separated by deltaPhi, the regular
+         * spacing between zenith angles, i.e., deltaPhi = 180 / (number of columns - 1).
+         *
+         * This field is optional, i.e., an empty vector.
+         */
+        Row[] signalGainCorrectionDbi;
+
+        /**
+         * 2D vectors of 1-sigma uncertainty in dBi associated with the signal
+         * gain correction values.
+         *
+         * This field is optional, i.e., an empty vector.
+         */
+        Row[] signalGainCorrectionUncertaintyDbi;
+    }
+
+    /**
+     * Called when on connection, and on known-change to these values, such as upon a known
+     * GNSS RF antenna tuning change, or a foldable device state change.
+     *
+     * This is optional. It can never be called if the GNSS antenna information is not
+     * available.
+     */
+    void gnssAntennaInfoCb(in GnssAntennaInfo[] gnssAntennaInfos);
+}
diff --git a/gnss/aidl/android/hardware/gnss/IGnssBatching.aidl b/gnss/aidl/android/hardware/gnss/IGnssBatching.aidl
index 0d48ee1..0d03a0f 100644
--- a/gnss/aidl/android/hardware/gnss/IGnssBatching.aidl
+++ b/gnss/aidl/android/hardware/gnss/IGnssBatching.aidl
@@ -46,6 +46,25 @@
      */
     const int WAKEUP_ON_FIFO_FULL = 0x01;
 
+    /** Options specifying the batching request. */
+    @VintfStability
+    parcelable Options {
+        /** Time interval between samples in the location batch, in nanoseconds. */
+        long periodNanos;
+
+        /**
+         * The minimum distance in meters that the batching engine should
+         * accumulate before trying another GPS fix when in a challenging GPS environment.
+         *
+         * This is an optional field. If it is set as 0, the chipset can operate in an automatic
+         * mode.
+         */
+        float minDistanceMeters;
+
+        /** A bit field of Flags (WAKEUP_ON_FIFO_FULL) indicating the batching behavior. */
+        int flags;
+    }
+
     /**
      * Open the interface and provides the callback routines to the implementation of this
      * interface.
@@ -83,10 +102,9 @@
      * for using flushBatchedLocation to explicitly ask for the location as needed, to avoid it
      * being dropped.
      *
-     * @param periodNanos  Time interval between samples in the location batch, in nanoseconds
-     * @param flags  A bitfield of flags (WAKEUP_ON_FIFO_FULL) indicating the batching behavior
+     * @param options  Options specifying the batching request.
      */
-    void start(in long periodNanos, in int flags);
+    void start(in Options options);
 
     /**
      * Retrieve all batched locations currently stored.
diff --git a/gnss/aidl/android/hardware/gnss/IGnssCallback.aidl b/gnss/aidl/android/hardware/gnss/IGnssCallback.aidl
index aad09ef..a74d097 100644
--- a/gnss/aidl/android/hardware/gnss/IGnssCallback.aidl
+++ b/gnss/aidl/android/hardware/gnss/IGnssCallback.aidl
@@ -16,6 +16,8 @@
 
 package android.hardware.gnss;
 
+import android.hardware.gnss.GnssConstellationType;
+import android.hardware.gnss.GnssLocation;
 import android.hardware.gnss.IGnssConfiguration;
 import android.hardware.gnss.IGnssPsds;
 
@@ -26,9 +28,48 @@
  */
 @VintfStability
 interface IGnssCallback {
+    /**
+     * Capability bit mask indicating that GNSS supports scheduling fixes for RECURRENCE_PERIODIC
+     * mode.
+     *
+     * If this is not set, then the framework will use 1000ms for minInterval and will call start()
+     * and stop() to schedule the GNSS.
+     */
+    const int CAPABILITY_SCHEDULING = 1 << 0;
+
+    /** Capability bit mask indicating that GNSS supports MS-Based AGNSS mode */
+    const int CAPABILITY_MSB = 1 << 1;
+
+    /** Capability bit mask indicating that GNSS supports MS-Assisted AGNSS mode */
+    const int CAPABILITY_MSA = 1 << 2;
+
+    /** Capability bit mask indicating that GNSS supports single-shot fixes */
+    const int CAPABILITY_SINGLE_SHOT = 1 << 3;
+
+    /** Capability bit mask indicating that GNSS supports on demand time injection */
+    const int CAPABILITY_ON_DEMAND_TIME = 1 << 4;
+
+    /** Capability bit mask indicating that GNSS supports Geofencing  */
+    const int CAPABILITY_GEOFENCING = 1 << 5;
+
+    /** Capability bit mask indicating that GNSS supports Measurements. */
+    const int CAPABILITY_MEASUREMENTS = 1 << 6;
+
+    /** Capability bit mask indicating that GNSS supports Navigation Messages */
+    const int CAPABILITY_NAV_MESSAGES = 1 << 7;
+
+    /** Capability bit mask indicating that GNSS supports low power mode */
+    const int CAPABILITY_LOW_POWER_MODE = 1 << 8;
+
     /** Capability bit mask indicating that GNSS supports blocklisting satellites */
     const int CAPABILITY_SATELLITE_BLOCKLIST = 1 << 9;
 
+    /** Capability bit mask indicating that GNSS supports measurement corrections */
+    const int CAPABILITY_MEASUREMENT_CORRECTIONS = 1 << 10;
+
+    /** Capability bit mask indicating that GNSS supports antenna info */
+    const int CAPABILITY_ANTENNA_INFO = 1 << 11;
+
     /** Capability bit mask indicating that GNSS supports correlation vector */
     const int CAPABILITY_CORRELATION_VECTOR = 1 << 12;
 
@@ -44,4 +85,221 @@
      * @param capabilities Capability parameter is a bit field of the Capability bit masks.
      */
     void gnssSetCapabilitiesCb(in int capabilities);
+
+    /** GNSS status event values. */
+    @VintfStability
+    @Backing(type="int")
+    enum GnssStatusValue {
+        /** GNSS status unknown. */
+        NONE = 0,
+        /** GNSS has begun navigating. */
+        SESSION_BEGIN = 1,
+        /** GNSS has stopped navigating. */
+        SESSION_END = 2,
+        /** GNSS has powered on but is not navigating. */
+        ENGINE_ON = 3,
+        /** GNSS is powered off. */
+        ENGINE_OFF = 4
+    }
+
+    /**
+     * Flags that indicate information about the satellite
+     */
+    @VintfStability
+    @Backing(type="int")
+    enum GnssSvFlags {
+        NONE = 0,
+        HAS_EPHEMERIS_DATA = 1 << 0,
+        HAS_ALMANAC_DATA = 1 << 1,
+        USED_IN_FIX = 1 << 2,
+        HAS_CARRIER_FREQUENCY = 1 << 3,
+    }
+
+    @VintfStability
+    parcelable GnssSvInfo {
+        /**
+         * Pseudo-random or satellite ID number for the satellite, a.k.a. Space Vehicle (SV), or
+         * FCN/OSN number for Glonass. The distinction is made by looking at constellation field.
+         * Values must be in the range of:
+         *
+         * - GNSS:    1-32
+         * - SBAS:    120-151, 183-192
+         * - GLONASS: 1-24, the orbital slot number (OSN), if known.  Or, if not:
+         *            93-106, the frequency channel number (FCN) (-7 to +6) offset by
+         *            + 100
+         *            i.e. report an FCN of -7 as 93, FCN of 0 as 100, and FCN of +6
+         *            as 106.
+         * - QZSS:    193-200
+         * - Galileo: 1-36
+         * - Beidou:  1-37
+         * - IRNSS:   1-14
+         */
+        int svid;
+
+        /**
+         * Defines the constellation of the given SV.
+         */
+        GnssConstellationType constellation;
+
+        /**
+         * Carrier-to-noise density in dB-Hz, typically in the range [0, 63].
+         * It contains the measured C/N0 value for the signal at the antenna port.
+         *
+         * This is a mandatory field.
+         */
+        float cN0Dbhz;
+
+        /**
+         * Baseband Carrier-to-noise density in dB-Hz, typically in the range [0, 63]. It contains
+         * the measured C/N0 value for the signal measured at the baseband.
+         *
+         * This is typically a few dB weaker than the value estimated for C/N0 at the antenna port,
+         * which is reported in cN0DbHz.
+         *
+         * If a signal has separate components (e.g. Pilot and Data channels) and the receiver only
+         * processes one of the components, then the reported basebandCN0DbHz reflects only the
+         * component that is processed.
+         *
+         * This field is mandatory. Like cN0DbHz, it may be reported as 0 for satellites being
+         * reported that may be searched for, but not yet tracked.
+         */
+        float basebandCN0DbHz;
+
+        /** Elevation of SV in degrees. */
+        float elevationDegrees;
+
+        /** Azimuth of SV in degrees. */
+        float azimuthDegrees;
+
+        /**
+         * Carrier frequency of the signal tracked, for example it can be the
+         * GPS central frequency for L1 = 1575.45 MHz, or L2 = 1227.60 MHz, L5 =
+         * 1176.45 MHz, varying GLO channels, etc. If the field is zero, it is
+         * the primary common use central frequency, e.g. L1 = 1575.45 MHz for
+         * GPS.
+         *
+         * For an L1, L5 receiver tracking a satellite on L1 and L5 at the same
+         * time, two GnssSvInfo structs must be reported for this same
+         * satellite, in one of the structs, all the values related
+         * to L1 must be filled, and in the other all of the values related to
+         * L5 must be filled.
+         *
+         * If the data is available, svFlag must contain HAS_CARRIER_FREQUENCY.
+         */
+        long carrierFrequencyHz;
+
+        /** A bit field of the GnssSvFlags. */
+        int svFlag;
+    }
+
+    /**
+     * Called to communicate the status of the GNSS engine.
+     *
+     * @param status Status information from HAL.
+     */
+    void gnssStatusCb(in GnssStatusValue status);
+
+    /**
+     * Callback for the HAL to pass a vector of GnssSvInfo back to the client.
+     *
+     * @param svInfo SV status information from HAL.
+     */
+    void gnssSvStatusCb(in GnssSvInfo[] svInfoList);
+
+    /**
+     * Called when a GNSS location is available.
+     *
+     * @param location Location information from HAL.
+     */
+    void gnssLocationCb(in GnssLocation location);
+
+    /**
+     * Callback for reporting NMEA sentences. Called when NMEA data is available.
+     *
+     * @param timestamp Marks the instance of reporting.
+     * @param nmea Follows standard NMEA 0183. Each sentence begins with a '$'
+     * and ends with a carriage return/line feed sequence and can be no longer
+     * than 80 characters of visible text (plus the line terminators). The data
+     * is contained within this single line with data items separated by commas.
+     * The data itself is just ascii text and may extend over multiple sentences
+     * in certain specialized instances but is normally fully contained in one
+     * variable length sentence. The data may vary in the amount of precision
+     * contained in the message. For example time might be indicated to decimal
+     * parts of a second or location may be shown with 3 or even 4 digits after
+     * the decimal point. Programs that read the data must only use the commas
+     * to determine the field boundaries and not depend on column positions.
+     * There is a provision for a checksum at the end of each sentence which may
+     * or may not be checked by the unit that reads the data. The checksum field
+     * consists of a '*' and two hex digits representing an 8 bit exclusive OR
+     * of all characters between, but not including, the '$' and '*'.
+     */
+    void gnssNmeaCb(in long timestamp, in @utf8InCpp String nmea);
+
+    /**
+     * Callback utility for acquiring the GNSS wakelock. This can be used to prevent
+     * the CPU from suspending while handling GNSS events.
+     */
+    void gnssAcquireWakelockCb();
+
+    /** Callback utility for releasing the GNSS wakelock. */
+    void gnssReleaseWakelockCb();
+
+    /**
+     * Provides information about how new the underlying GPS/GNSS hardware and software is.
+     */
+    @VintfStability
+    parcelable GnssSystemInfo {
+        /**
+         * The year in which the last update was made to the underlying hardware/firmware used to
+         * capture GNSS signals, e.g. 2016.
+         */
+        int yearOfHw;
+
+        /**
+         * The name of the GNSS HAL implementation model and version name.
+         *
+         * This is a user-visible string that identifies the model and version of the GNSS HAL.
+         * For example "ABC Co., Baseband Part 1234, RF Part 567, Software version 3.14.159"
+         *
+         * For privacy reasons, this string must not contain any device-specific serial number or
+         * other identifier that uniquely identifies an individual device.
+         */
+        @utf8InCpp String name;
+    }
+
+    /**
+     * Callback to inform the framework of the GNSS system information.
+     *
+     * This must be called in response to IGnss::setCallback
+     *
+     * @param info GnssSystemInfo about the GPS/GNSS hardware.
+     */
+    void gnssSetSystemInfoCb(in GnssSystemInfo info);
+
+    /** Callback for requesting NTP time */
+    void gnssRequestTimeCb();
+
+    /**
+     * Callback for requesting Location.
+     *
+     * HAL implementation must call this when it wants the framework to provide locations to assist
+     * with GNSS HAL operation, for example, to assist with time to first fix, error recovery, or to
+     * supplement GNSS location for other clients of the GNSS HAL.
+     *
+     * If a request is made with independentFromGnss set to true, the framework must avoid
+     * providing locations derived from GNSS locations (such as "fused" location), to help improve
+     * information independence for situations such as error recovery.
+     *
+     * In response to this method call, GNSS HAL can expect zero, one, or more calls to
+     * IGnss::injectLocation or IGnss::injectBestLocation, dependent on availability of location
+     * from other sources, which may happen at some arbitrary delay. Generally speaking, HAL
+     * implementations must be able to handle calls to IGnss::injectLocation or
+     * IGnss::injectBestLocation at any time.
+     *
+     * @param independentFromGnss True if requesting a location that is independent from GNSS.
+     * @param isUserEmergency True if the location request is for delivery of this location to an
+     *        emergency services endpoint, during a user-initiated emergency session (e.g.
+     *        during-call to E911, or up to 5 minutes after end-of-call or text to E911).
+     */
+    void gnssRequestLocationCb(in boolean independentFromGnss, in boolean isUserEmergency);
 }
diff --git a/gnss/aidl/android/hardware/gnss/IGnssMeasurementInterface.aidl b/gnss/aidl/android/hardware/gnss/IGnssMeasurementInterface.aidl
index 08c83a4..102cdcd 100644
--- a/gnss/aidl/android/hardware/gnss/IGnssMeasurementInterface.aidl
+++ b/gnss/aidl/android/hardware/gnss/IGnssMeasurementInterface.aidl
@@ -24,6 +24,48 @@
 @VintfStability
 interface IGnssMeasurementInterface {
     /**
+     * Options specifying the GnssMeasurement request.
+     */
+    @VintfStability
+    parcelable Options {
+        /**
+         * Enable full tracking mode.
+         *
+         * If true, GNSS chipset must switch off duty cycling. In such mode no clock discontinuities
+         * are expected and, when supported, carrier phase should be continuous in good signal
+         * conditions. All non-blocklisted, healthy constellations, satellites and frequency bands
+         * that the chipset supports must be reported in this mode. The GNSS chipset is allowed to
+         * consume more power in this mode. If false, API must optimize power via duty cycling,
+         * constellations and frequency limits, etc.
+         */
+        boolean enableFullTracking;
+
+        /**
+         * Enable Correlation Vector outputs.
+         *
+         * If true, enable correlation vectors as part of the raw GNSS measurements outputs. If
+         * false, disable correlation vectors.
+         */
+        boolean enableCorrVecOutputs;
+
+        /**
+         * Time interval between the reported measurements in milliseconds.
+         *
+         * The GNSS chipset must not report measurements with a rate slower than requested. All the
+         * available measurements must be reported to the framework.
+         *
+         * For cases where concurrently serving the location and the measurement requests would not
+         * consume more power than only the measurement request, the faster rate of the 2 requests
+         * must be chosen. Otherwise, it is recommended that the GNSS chipset minimizes the power
+         * consumption with appropriate location and measurement intervals to satisfy both requests.
+         * For example, for 2-sec measurement interval request and 7-sec location interval request,
+         * the GNSS chipset is recommended to run the measurement engine with 2-sec interval and the
+         * location engine with 6-sec interval.
+         */
+        int intervalMs;
+    }
+
+    /**
      * Initializes the interface and registers the callback routines with the HAL. After a
      * successful call to 'setCallback' the HAL must begin to provide updates at an average
      * output rate of 1Hz (occasional intra-measurement time offsets in the range from 0-2000msec
@@ -39,13 +81,9 @@
      *
      * @param enableCorrVecOutputs If true, enable correlation vectors as part of the raw GNSS
      *     measurements outputs. If false, disable correlation vectors.
-     *
-     * Returns ok() if successful. Returns ERROR_ALREADY_INIT if a callback has already been
-     * registered without a corresponding call to 'close'. Returns ERROR_GENERIC for any other
-     * error. The HAL must not generate any other updates upon returning this error code.
      */
     void setCallback(in IGnssMeasurementCallback callback, in boolean enableFullTracking,
-                     in boolean enableCorrVecOutputs);
+            in boolean enableCorrVecOutputs);
 
     /**
      * Stops updates from the HAL, and unregisters the callback routines. After a call to close(),
@@ -55,4 +93,11 @@
      * no work.
      */
     void close();
-}
\ No newline at end of file
+
+    /**
+     * Initializes the interface and registers the callback routines with the HAL.
+     *
+     * @param options See Options definition.
+     */
+    void setCallbackWithOptions(in IGnssMeasurementCallback callback, in Options options);
+}
diff --git a/gnss/aidl/android/hardware/gnss/measurement_corrections/IMeasurementCorrectionsCallback.aidl b/gnss/aidl/android/hardware/gnss/measurement_corrections/IMeasurementCorrectionsCallback.aidl
new file mode 100644
index 0000000..d695e70
--- /dev/null
+++ b/gnss/aidl/android/hardware/gnss/measurement_corrections/IMeasurementCorrectionsCallback.aidl
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.gnss.measurement_corrections;
+
+/**
+ * GNSS measurement corrections callback interface.
+ */
+@VintfStability
+interface IMeasurementCorrectionsCallback {
+    /**
+     * Flags to indicate supported measurement corrections capabilities
+     *
+     * Either the LOS_SATS or the EXCESS_PATH_LENGTH capability must be supported.
+     */
+    /**
+     * Capability bit flag indicating that GNSS supports line-of-sight satellite identification
+     * measurement corrections
+     */
+    const int CAPABILITY_LOS_SATS = 1 << 0;
+    /**
+     * Capability bit flag indicating that GNSS supports per satellite excess-path-length
+     * measurement corrections
+     */
+    const int CAPABILITY_EXCESS_PATH_LENGTH = 1 << 1;
+    /**
+     * Capability bit flag indicating that GNSS supports reflecting planes measurement
+     * corrections
+     */
+    const int CAPABILITY_REFLECTING_PLANE = 1 << 2;
+
+    /**
+     * Callback to inform framework the measurement correction specific capabilities of the GNSS
+     * HAL implementation.
+     *
+     * The GNSS HAL must call this method immediately after the framework opens the measurement
+     * corrections interface.
+     *
+     * @param capabilities A bit field of flags indicating the capabilities of measurement
+     *         corrections.
+     *        It is mandatory to support either LOS_STATS or EXCESS_PATH_LENGTH capability.
+     */
+    void setCapabilitiesCb(in int capabilities);
+}
diff --git a/gnss/aidl/android/hardware/gnss/measurement_corrections/IMeasurementCorrectionsInterface.aidl b/gnss/aidl/android/hardware/gnss/measurement_corrections/IMeasurementCorrectionsInterface.aidl
new file mode 100644
index 0000000..eeabc6d
--- /dev/null
+++ b/gnss/aidl/android/hardware/gnss/measurement_corrections/IMeasurementCorrectionsInterface.aidl
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.gnss.measurement_corrections;
+
+import android.hardware.gnss.measurement_corrections.IMeasurementCorrectionsCallback;
+import android.hardware.gnss.measurement_corrections.MeasurementCorrections;
+
+/**
+ * Interface for measurement corrections support.
+ */
+@VintfStability
+interface IMeasurementCorrectionsInterface {
+    /**
+     * Injects measurement corrections to be used by the HAL to improve the GNSS location output.
+     *
+     * These are NOT to be used to adjust the IGnssMeasurementCallback output values -
+     * those remain raw, uncorrected measurements.
+     *
+     * In general, these are injected when conditions defined by the platform are met, such as when
+     * GNSS Location is being requested at a sufficiently high accuracy, based on the capabilities
+     * of the GNSS chipset as reported in the IGnssCallback.
+     *
+     * @param corrections The computed corrections to be used by the HAL.
+     */
+    void setCorrections(in MeasurementCorrections corrections);
+
+    /**
+     * Opens the interface and provides the callback routines to the implementation of this
+     * interface.
+     *
+     * @param callback Callback interface for IMeasurementCorrections.
+     */
+    void setCallback(in IMeasurementCorrectionsCallback callback);
+}
diff --git a/gnss/aidl/android/hardware/gnss/measurement_corrections/MeasurementCorrections.aidl b/gnss/aidl/android/hardware/gnss/measurement_corrections/MeasurementCorrections.aidl
new file mode 100644
index 0000000..285c7d4
--- /dev/null
+++ b/gnss/aidl/android/hardware/gnss/measurement_corrections/MeasurementCorrections.aidl
@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.gnss.measurement_corrections;
+
+import android.hardware.gnss.measurement_corrections.SingleSatCorrection;
+
+/**
+ * A struct containing a set of measurement corrections for all used GNSS satellites at the location
+ * specified by latitudeDegrees, longitudeDegrees, altitudeMeters and at the time of week specified
+ * toaGpsNanosecondsOfWeek
+ */
+@VintfStability
+parcelable MeasurementCorrections {
+    /** Represents latitude in degrees at which the corrections are computed.. */
+    double latitudeDegrees;
+
+    /** Represents longitude in degrees at which the corrections are computed.. */
+    double longitudeDegrees;
+
+    /**
+     * Represents altitude in meters above the WGS 84 reference ellipsoid at which the corrections
+     * are computed.
+     */
+    double altitudeMeters;
+
+    /**
+     * Represents the horizontal uncertainty (63% to 68% confidence) in meters on the device
+     * position at which the corrections are provided.
+     *
+     * This value is useful for example to judge how accurate the provided corrections are.
+     */
+    double horizontalPositionUncertaintyMeters;
+
+    /**
+     * Represents the vertical uncertainty (63% to 68% confidence) in meters on the device position
+     * at which the corrections are provided.
+     *
+     * This value is useful for example to judge how accurate the provided corrections are.
+     */
+    double verticalPositionUncertaintyMeters;
+
+    /** Time Of Applicability, GPS time of week in nanoseconds. */
+    long toaGpsNanosecondsOfWeek;
+
+    /**
+     * A set of SingleSatCorrection each containing measurement corrections for a satellite in view
+     */
+    SingleSatCorrection[] satCorrections;
+
+    /**
+     * Boolean indicating if environment bearing is available.
+     */
+    boolean hasEnvironmentBearing;
+
+    /**
+     * Environment bearing in degrees clockwise from true North (0.0 to 360.0], in direction of
+     * user motion. Environment bearing is provided when it is known with high probability that
+     * velocity is aligned with an environment feature, such as a building or road.
+     *
+     * If user speed is zero, environmentBearingDegrees represents bearing of most recent speed
+     * that was > 0.
+     *
+     * As position approaches another road, environmentBearingUncertaintyDegrees will grow, and at
+     * some stage hasEnvironmentBearing = false.
+     *
+     * As position moves towards an open area, environmentBearingUncertaintyDegrees will grow, and
+     * at some stage hasEnvironmentBearing = false.
+     *
+     * If the road is curved in the vicinity of the user location, then
+     * environmentBearingUncertaintyDegrees will include the amount by which the road direction
+     * changes in the area of position uncertainty.
+     *
+     * hasEnvironmentBearing should be checked to verify the environment bearing is available
+     * before calling this method. The value is undefined if hasEnvironmentBearing is false.
+     */
+    float environmentBearingDegrees;
+
+    /**
+     * Environment bearing uncertainty [0 to 180]. It represents the standard deviation of the
+     * physical structure in the circle of position uncertainty. hasEnvironmentBearing becomes false
+     * as the uncertainty value passes a predefined threshold depending on the physical structure
+     * around the user.
+     *
+     * hasEnvironmentBearing should be checked to verify the environment bearing is available
+     * before calling this method. The value is undefined if hasEnvironmentBearing is false.
+     */
+    float environmentBearingUncertaintyDegrees;
+}
diff --git a/gnss/aidl/android/hardware/gnss/measurement_corrections/ReflectingPlane.aidl b/gnss/aidl/android/hardware/gnss/measurement_corrections/ReflectingPlane.aidl
new file mode 100644
index 0000000..9bf2b44
--- /dev/null
+++ b/gnss/aidl/android/hardware/gnss/measurement_corrections/ReflectingPlane.aidl
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.gnss.measurement_corrections;
+
+/**
+ * A struct containing the characteristics of the reflecting plane that the satellite signal has
+ * bounced from.
+ *
+ * The value is only valid if HAS_REFLECTING_PLANE flag is set. An invalid reflecting plane
+ * means either reflection planes serving is not supported or the satellite signal has gone
+ * through multiple reflections.
+ */
+@VintfStability
+parcelable ReflectingPlane {
+    /** Represents latitude of the reflecting plane in degrees. */
+    double latitudeDegrees;
+
+    /** Represents longitude of the reflecting plane in degrees. */
+    double longitudeDegrees;
+
+    /**
+     * Represents altitude of the reflecting point in the plane in meters above the WGS 84 reference
+     * ellipsoid.
+     */
+    double altitudeMeters;
+
+    /** Represents azimuth clockwise from north of the reflecting plane in degrees. */
+    double azimuthDegrees;
+}
diff --git a/gnss/aidl/android/hardware/gnss/measurement_corrections/SingleSatCorrection.aidl b/gnss/aidl/android/hardware/gnss/measurement_corrections/SingleSatCorrection.aidl
new file mode 100644
index 0000000..d9f7105
--- /dev/null
+++ b/gnss/aidl/android/hardware/gnss/measurement_corrections/SingleSatCorrection.aidl
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.gnss.measurement_corrections;
+
+import android.hardware.gnss.GnssConstellationType;
+import android.hardware.gnss.measurement_corrections.ReflectingPlane;
+
+/**
+ * A struct with measurement corrections for a single visible satellites
+ *
+ * The bit mask singleSatCorrectionFlags indicates which correction values are valid in the struct
+ */
+@VintfStability
+parcelable SingleSatCorrection {
+    /** Bit mask to indicate which values are valid in a SingleSatCorrection object. */
+    /** GnssSingleSatCorrectionFlags has valid satellite-is-line-of-sight-probability field. */
+    const int SINGLE_SAT_CORRECTION_HAS_SAT_IS_LOS_PROBABILITY = 0x0001;
+    /** GnssSingleSatCorrectionFlags has valid Excess Path Length field. */
+    const int SINGLE_SAT_CORRECTION_HAS_EXCESS_PATH_LENGTH = 0x0002;
+    /** GnssSingleSatCorrectionFlags has valid Excess Path Length Uncertainty field. */
+    const int SINGLE_SAT_CORRECTION_HAS_EXCESS_PATH_LENGTH_UNC = 0x0004;
+    /** GnssSingleSatCorrectionFlags has valid Reflecting Plane field. */
+    const int SINGLE_SAT_CORRECTION_HAS_REFLECTING_PLANE = 0x0008;
+
+    /** Contains GnssSingleSatCorrectionFlags bits. */
+    int singleSatCorrectionFlags;
+
+    /**
+     * Defines the constellation of the given satellite.
+     */
+    GnssConstellationType constellation;
+
+    /**
+     * Satellite vehicle ID number, as defined in GnssSvInfo::svid
+     */
+    int svid;
+
+    /**
+     * Carrier frequency of the signal to be corrected, for example it can be the
+     * GPS center frequency for L1 = 1,575,420,000 Hz, varying GLO channels, etc.
+     *
+     * For a receiver with capabilities to track multiple frequencies for the same satellite,
+     * multiple corrections for the same satellite may be provided.
+     */
+    long carrierFrequencyHz;
+
+    /**
+     * The probability that the satellite is estimated to be in Line-of-Sight condition at the given
+     * location.
+     */
+    float probSatIsLos;
+
+    /**
+     * Excess path length to be subtracted from pseudorange before using it in calculating location.
+     *
+     * Note this value is NOT to be used to adjust the GnsseasurementCallback outputs.
+     */
+    float excessPathLengthMeters;
+
+    /** Error estimate (1-sigma) for the Excess path length estimate */
+    float excessPathLengthUncertaintyMeters;
+
+    /**
+     * Defines the reflecting plane characteristics such as location and azimuth
+     *
+     * The value is only valid if HAS_REFLECTING_PLANE flag is set. An invalid reflecting plane
+     * means either reflection planes serving is not supported or the satellite signal has gone
+     * through multiple reflections.
+     */
+    ReflectingPlane reflectingPlane;
+}
diff --git a/gnss/aidl/android/hardware/gnss/visibility_control/IGnssVisibilityControl.aidl b/gnss/aidl/android/hardware/gnss/visibility_control/IGnssVisibilityControl.aidl
new file mode 100644
index 0000000..c9c1549
--- /dev/null
+++ b/gnss/aidl/android/hardware/gnss/visibility_control/IGnssVisibilityControl.aidl
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.gnss.visibility_control;
+
+import android.hardware.gnss.visibility_control.IGnssVisibilityControlCallback;
+
+/**
+ * Represents the GNSS location reporting permissions and notification interface.
+ *
+ * This interface is used to tell the GNSS HAL implementation whether the framework user has
+ * granted permission to the GNSS HAL implementation to provide GNSS location information for
+ * non-framework (NFW), non-user initiated emergency use cases, and to notify the framework user
+ * of these GNSS location information deliveries.
+ *
+ * For user initiated emergency cases (and for the configured extended emergency session duration),
+ * the GNSS HAL implementation must serve the emergency location supporting network initiated
+ * location requests immediately irrespective of this permission settings.
+ *
+ * There is no separate need for the GNSS HAL implementation to monitor the global device location
+ * on/off setting. Permission to use GNSS for non-framework use cases is expressly controlled
+ * by the method enableNfwLocationAccess(). The framework monitors the location permission settings
+ * of the configured proxy applications(s), and device location settings, and calls the method
+ * enableNfwLocationAccess() whenever the user control proxy applications have, or do not have,
+ * location permission. The proxy applications are used to provide user visibility and control of
+ * location access by the non-framework on/off device entities they are representing.
+ *
+ * For device user visibility, the GNSS HAL implementation must call the method
+ * IGnssVisibilityControlCallback.nfwNotifyCb() whenever location request is rejected or
+ * location information is provided to non-framework entities (on or off device). This includes
+ * the network initiated location requests for user-initiated emergency use cases as well.
+ *
+ * The HAL implementations that support this interface must not report GNSS location, measurement,
+ * status, or other information that can be used to derive user location to any entity when not
+ * expressly authorized by this HAL. This includes all endpoints for location information
+ * off the device, including carriers, vendors, OEM and others directly or indirectly.
+ */
+@VintfStability
+interface IGnssVisibilityControl {
+    /**
+     * Enables/disables non-framework entity location access permission in the GNSS HAL.
+     *
+     * The framework will call this method to update GNSS HAL implementation every time the
+     * framework user, through the given proxy application(s) and/or device location settings,
+     * explicitly grants/revokes the location access permission for non-framework, non-user
+     * initiated emergency use cases.
+     *
+     * Whenever the user location information is delivered to non-framework entities, the HAL
+     * implementation must call the method IGnssVisibilityControlCallback.nfwNotifyCb() to notify
+     * the framework for user visibility.
+     *
+     * @param proxyApps Full list of package names of proxy Android applications representing
+     * the non-framework location access entities (on/off the device) for which the framework
+     * user has granted non-framework location access permission. The GNSS HAL implementation
+     * must provide location information only to non-framework entities represented by these
+     * proxy applications.
+     *
+     * The package name of the proxy Android application follows the standard Java language
+     * package naming format. For example, com.example.myapp.
+     */
+    void enableNfwLocationAccess(in @utf8InCpp String[] proxyApps);
+
+    /**
+     * Registers the callback for HAL implementation to use.
+     *
+     * @param callback Handle to IGnssVisibilityControlCallback interface.
+     */
+    void setCallback(in IGnssVisibilityControlCallback callback);
+}
diff --git a/gnss/aidl/android/hardware/gnss/visibility_control/IGnssVisibilityControlCallback.aidl b/gnss/aidl/android/hardware/gnss/visibility_control/IGnssVisibilityControlCallback.aidl
new file mode 100644
index 0000000..051fbe6
--- /dev/null
+++ b/gnss/aidl/android/hardware/gnss/visibility_control/IGnssVisibilityControlCallback.aidl
@@ -0,0 +1,176 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.gnss.visibility_control;
+
+/**
+ * GNSS location reporting permissions and notification callback interface.
+ */
+@VintfStability
+interface IGnssVisibilityControlCallback {
+    /**
+     * Protocol stack that is requesting the non-framework location information.
+     */
+    @VintfStability
+    @Backing(type="int")
+    enum NfwProtocolStack {
+        /** Cellular control plane requests */
+        CTRL_PLANE = 0,
+
+        /** All types of SUPL requests */
+        SUPL = 1,
+
+        /** All types of requests from IMS */
+        IMS = 10,
+
+        /** All types of requests from SIM */
+        SIM = 11,
+
+        /** Requests from other protocol stacks */
+        OTHER_PROTOCOL_STACK = 100
+    }
+
+    /**
+     * Entity that is requesting/receiving the location information.
+     */
+    @VintfStability
+    @Backing(type="int")
+    enum NfwRequestor {
+        /** Wireless service provider */
+        CARRIER = 0,
+
+        /** Device manufacturer */
+        OEM = 10,
+
+        /** Modem chipset vendor */
+        MODEM_CHIPSET_VENDOR = 11,
+
+        /** GNSS chipset vendor */
+        GNSS_CHIPSET_VENDOR = 12,
+
+        /** Other chipset vendor */
+        OTHER_CHIPSET_VENDOR = 13,
+
+        /** Automobile client */
+        AUTOMOBILE_CLIENT = 20,
+
+        /** Other sources */
+        OTHER_REQUESTOR = 100
+    }
+
+    /**
+     * GNSS response type for non-framework location requests.
+     */
+    @VintfStability
+    @Backing(type="int")
+    enum NfwResponseType {
+        /** Request rejected because framework has not given permission for this use case */
+        REJECTED = 0,
+
+        /** Request accepted but could not provide location because of a failure */
+        ACCEPTED_NO_LOCATION_PROVIDED = 1,
+
+        /** Request accepted and location provided */
+        ACCEPTED_LOCATION_PROVIDED = 2,
+    }
+
+    /**
+     * Represents a non-framework location information request/response notification.
+     */
+    @VintfStability
+    parcelable NfwNotification {
+        /**
+         * Package name of the Android proxy application representing the non-framework
+         * entity that requested location. Set to empty string if unknown.
+         *
+         * For user-initiated emergency use cases, this field must be set to empty string
+         * and the inEmergencyMode field must be set to true.
+         */
+        String proxyAppPackageName;
+
+        /** Protocol stack that initiated the non-framework location request. */
+        NfwProtocolStack protocolStack;
+
+        /**
+         * Name of the protocol stack if protocolStack field is set to OTHER_PROTOCOL_STACK.
+         * Otherwise, set to empty string.
+         *
+         * This field is opaque to the framework and used for logging purposes.
+         */
+        String otherProtocolStackName;
+
+        /** Source initiating/receiving the location information. */
+        NfwRequestor requestor;
+
+        /**
+         * Identity of the endpoint receiving the location information. For example, carrier
+         * name, OEM name, SUPL SLP/E-SLP FQDN, chipset vendor name, etc.
+         *
+         * This field is opaque to the framework and used for logging purposes.
+         */
+        String requestorId;
+
+        /** Indicates whether location information was provided for this request. */
+        NfwResponseType responseType;
+
+        /** Is the device in user initiated emergency session. */
+        boolean inEmergencyMode;
+
+        /** Is cached location provided */
+        boolean isCachedLocation;
+    }
+
+    /**
+     * Callback to report a non-framework delivered location.
+     *
+     * The GNSS HAL implementation must call this method to notify the framework whenever
+     * a non-framework location request is made to the GNSS HAL.
+     *
+     * Non-framework entities like low power sensor hubs that request location from GNSS and
+     * only pass location information through Android framework controls are exempt from this
+     * power-spending reporting. However, low power sensor hubs or other chipsets which may send
+     * the location information to anywhere other than Android framework (which provides user
+     * visibility and control), must report location information use through this API whenever
+     * location information (or events driven by that location such as "home" location detection)
+     * leaves the domain of that low power chipset.
+     *
+     * To avoid overly spamming the framework, high speed location reporting of the exact same
+     * type may be throttled to report location at a lower rate than the actual report rate, as
+     * long as the location is reported with a latency of no more than the larger of 5 seconds,
+     * or the next the Android processor awake time. For example, if an Automotive client is
+     * getting location information from the GNSS location system at 20Hz, this method may be
+     * called at 1Hz. As another example, if a low power processor is getting location from the
+     * GNSS chipset, and the Android processor is asleep, the notification to the Android HAL may
+     * be delayed until the next wake of the Android processor.
+     *
+     * @param notification Non-framework delivered location request/response description.
+     */
+    void nfwNotifyCb(in NfwNotification notification);
+
+    /**
+     * Tells if the device is currently in an emergency session.
+     *
+     * Emergency session is defined as the device being actively in a user initiated emergency
+     * call or in post emergency call extension time period.
+     *
+     * If the GNSS HAL implementation cannot determine if the device is in emergency session
+     * mode, it must call this method to confirm that the device is in emergency session before
+     * serving network initiated emergency SUPL and Control Plane location requests.
+     *
+     * @return success True if the framework determines that the device is in emergency session.
+     */
+    boolean isInEmergencySession();
+}
diff --git a/gnss/aidl/default/AGnssRil.cpp b/gnss/aidl/default/AGnssRil.cpp
new file mode 100644
index 0000000..afe0039
--- /dev/null
+++ b/gnss/aidl/default/AGnssRil.cpp
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "AGnssRilAidl"
+
+#include "AGnssRil.h"
+#include <inttypes.h>
+#include <log/log.h>
+
+namespace aidl::android::hardware::gnss {
+
+std::shared_ptr<IAGnssRilCallback> AGnssRil::sCallback = nullptr;
+
+ndk::ScopedAStatus AGnssRil::setCallback(const std::shared_ptr<IAGnssRilCallback>& callback) {
+    ALOGD("AGnssRil::setCallback");
+    std::unique_lock<std::mutex> lock(mMutex);
+    sCallback = callback;
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus AGnssRil::setRefLocation(const AGnssRefLocation& agnssReflocation) {
+    const AGnssRefLocationCellID& cellInfo = agnssReflocation.cellID;
+    ALOGD("AGnssRil::setRefLocation: type: %s, mcc: %d, mnc: %d, lac: %d, cid: %" PRId64
+          ", tac: %d, pcid: "
+          "%d, arfcn: %d",
+          toString(agnssReflocation.type).c_str(), cellInfo.mcc, cellInfo.mnc, cellInfo.lac,
+          cellInfo.cid, cellInfo.tac, cellInfo.pcid, cellInfo.arfcn);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus AGnssRil::setSetId(SetIDType type, const std::string& setid) {
+    ALOGD("AGnssRil::setSetId: type:%s, setid: %s", toString(type).c_str(), setid.c_str());
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus AGnssRil::updateNetworkState(const NetworkAttributes& attributes) {
+    ALOGD("AGnssRil::updateNetworkState: networkHandle:%" PRId64
+          ", isConnected: %d, capabilities: %d, "
+          "apn: %s",
+          attributes.networkHandle, attributes.isConnected, attributes.capabilities,
+          attributes.apn.c_str());
+    return ndk::ScopedAStatus::ok();
+}
+
+}  // namespace aidl::android::hardware::gnss
diff --git a/gnss/aidl/default/AGnssRil.h b/gnss/aidl/default/AGnssRil.h
new file mode 100644
index 0000000..7e429ee
--- /dev/null
+++ b/gnss/aidl/default/AGnssRil.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/gnss/BnAGnssRil.h>
+
+namespace aidl::android::hardware::gnss {
+
+struct AGnssRil : public BnAGnssRil {
+  public:
+    ndk::ScopedAStatus setCallback(const std::shared_ptr<IAGnssRilCallback>& callback) override;
+    ndk::ScopedAStatus setRefLocation(const AGnssRefLocation& agnssReflocation) override;
+    ndk::ScopedAStatus setSetId(SetIDType type, const std::string& setid) override;
+    ndk::ScopedAStatus updateNetworkState(const NetworkAttributes& attributes) override;
+
+  private:
+    // Synchronization lock for sCallback
+    mutable std::mutex mMutex;
+    // Guarded by mMutex
+    static std::shared_ptr<IAGnssRilCallback> sCallback;
+};
+
+}  // namespace aidl::android::hardware::gnss
diff --git a/gnss/aidl/default/Android.bp b/gnss/aidl/default/Android.bp
index 24569ae..4543665 100644
--- a/gnss/aidl/default/Android.bp
+++ b/gnss/aidl/default/Android.bp
@@ -55,8 +55,10 @@
         "android.hardware.gnss-V2-ndk",
     ],
     srcs: [
+        "AGnssRil.cpp",
         "AGnss.cpp",
         "Gnss.cpp",
+        "GnssAntennaInfo.cpp",
         "GnssBatching.cpp",
         "GnssDebug.cpp",
         "GnssGeofence.cpp",
@@ -66,6 +68,8 @@
         "GnssPsds.cpp",
         "GnssConfiguration.cpp",
         "GnssMeasurementInterface.cpp",
+        "GnssVisibilityControl.cpp",
+        "MeasurementCorrectionsInterface.cpp",
         "service.cpp",
     ],
     static_libs: [
diff --git a/gnss/aidl/default/Gnss.cpp b/gnss/aidl/default/Gnss.cpp
index 45d6b1d..6331dfd 100644
--- a/gnss/aidl/default/Gnss.cpp
+++ b/gnss/aidl/default/Gnss.cpp
@@ -17,8 +17,12 @@
 #define LOG_TAG "GnssAidl"
 
 #include "Gnss.h"
+#include <inttypes.h>
 #include <log/log.h>
 #include "AGnss.h"
+#include "AGnssRil.h"
+#include "DeviceFileReader.h"
+#include "GnssAntennaInfo.h"
 #include "GnssBatching.h"
 #include "GnssConfiguration.h"
 #include "GnssDebug.h"
@@ -26,16 +30,29 @@
 #include "GnssMeasurementInterface.h"
 #include "GnssNavigationMessageInterface.h"
 #include "GnssPsds.h"
+#include "GnssVisibilityControl.h"
+#include "MeasurementCorrectionsInterface.h"
+#include "NmeaFixInfo.h"
+#include "Utils.h"
 
 namespace aidl::android::hardware::gnss {
+using ::android::hardware::gnss::common::NmeaFixInfo;
+using ::android::hardware::gnss::common::Utils;
+
+using ndk::ScopedAStatus;
+using GnssSvInfo = IGnssCallback::GnssSvInfo;
+
+constexpr int TTFF_MILLIS = 2200;
 
 std::shared_ptr<IGnssCallback> Gnss::sGnssCallback = nullptr;
 
-ndk::ScopedAStatus Gnss::setCallback(const std::shared_ptr<IGnssCallback>& callback) {
-    ALOGD("Gnss::setCallback");
+Gnss::Gnss() : mMinIntervalMs(1000), mFirstFixReceived(false) {}
+
+ScopedAStatus Gnss::setCallback(const std::shared_ptr<IGnssCallback>& callback) {
+    ALOGD("setCallback");
     if (callback == nullptr) {
         ALOGE("%s: Null callback ignored", __func__);
-        return ndk::ScopedAStatus::fromExceptionCode(STATUS_INVALID_OPERATION);
+        return ScopedAStatus::fromExceptionCode(STATUS_INVALID_OPERATION);
     }
 
     sGnssCallback = callback;
@@ -49,76 +66,211 @@
         ALOGE("%s: Unable to invoke callback.gnssSetCapabilities", __func__);
     }
 
-    return ndk::ScopedAStatus::ok();
+    return ScopedAStatus::ok();
 }
 
-ndk::ScopedAStatus Gnss::close() {
-    ALOGD("Gnss::close");
+std::unique_ptr<GnssLocation> Gnss::getLocationFromHW() {
+    std::string inputStr =
+            ::android::hardware::gnss::common::DeviceFileReader::Instance().getLocationData();
+    return ::android::hardware::gnss::common::NmeaFixInfo::getAidlLocationFromInputStr(inputStr);
+}
+
+ScopedAStatus Gnss::start() {
+    ALOGD("start()");
+    if (mIsActive) {
+        ALOGW("Gnss has started. Restarting...");
+        stop();
+    }
+
+    mIsActive = true;
+    this->reportGnssStatusValue(IGnssCallback::GnssStatusValue::SESSION_BEGIN);
+    mThread = std::thread([this]() {
+        auto svStatus = filterBlocklistedSatellites(Utils::getMockSvInfoList());
+        this->reportSvStatus(svStatus);
+        if (!mFirstFixReceived) {
+            std::this_thread::sleep_for(std::chrono::milliseconds(TTFF_MILLIS));
+            mFirstFixReceived = true;
+        }
+        while (mIsActive == true) {
+            auto svStatus = filterBlocklistedSatellites(Utils::getMockSvInfoList());
+            this->reportSvStatus(svStatus);
+
+            auto currentLocation = getLocationFromHW();
+            mGnssPowerIndication->notePowerConsumption();
+            if (currentLocation != nullptr) {
+                this->reportLocation(*currentLocation);
+            } else {
+                const auto location = Utils::getMockLocation();
+                this->reportLocation(location);
+            }
+            std::this_thread::sleep_for(std::chrono::milliseconds(mMinIntervalMs));
+        }
+    });
+    return ScopedAStatus::ok();
+}
+
+void Gnss::reportLocation(const GnssLocation& location) const {
+    std::unique_lock<std::mutex> lock(mMutex);
+    if (sGnssCallback == nullptr) {
+        ALOGE("%s: GnssCallback is null.", __func__);
+        return;
+    }
+    auto status = sGnssCallback->gnssLocationCb(location);
+    if (!status.isOk()) {
+        ALOGE("%s: Unable to invoke gnssLocationCb", __func__);
+    }
+    return;
+}
+
+void Gnss::reportSvStatus(const std::vector<GnssSvInfo>& svInfoList) const {
+    std::unique_lock<std::mutex> lock(mMutex);
+    if (sGnssCallback == nullptr) {
+        ALOGE("%s: sGnssCallback is null.", __func__);
+        return;
+    }
+    auto status = sGnssCallback->gnssSvStatusCb(svInfoList);
+    if (!status.isOk()) {
+        ALOGE("%s: Unable to invoke callback", __func__);
+    }
+}
+
+std::vector<GnssSvInfo> Gnss::filterBlocklistedSatellites(std::vector<GnssSvInfo> gnssSvInfoList) {
+    ALOGD("filterBlocklistedSatellites");
+    for (uint32_t i = 0; i < gnssSvInfoList.size(); i++) {
+        if (mGnssConfiguration->isBlocklisted(gnssSvInfoList[i])) {
+            gnssSvInfoList[i].svFlag &= ~(uint32_t)IGnssCallback::GnssSvFlags::USED_IN_FIX;
+        }
+    }
+    return gnssSvInfoList;
+}
+
+void Gnss::reportGnssStatusValue(const IGnssCallback::GnssStatusValue gnssStatusValue) const {
+    std::unique_lock<std::mutex> lock(mMutex);
+    if (sGnssCallback == nullptr) {
+        ALOGE("%s: sGnssCallback is null.", __func__);
+        return;
+    }
+    auto status = sGnssCallback->gnssStatusCb(gnssStatusValue);
+    if (!status.isOk()) {
+        ALOGE("%s: Unable to invoke gnssStatusCb", __func__);
+    }
+}
+
+ScopedAStatus Gnss::stop() {
+    ALOGD("stop");
+    mIsActive = false;
+    this->reportGnssStatusValue(IGnssCallback::GnssStatusValue::SESSION_END);
+    if (mThread.joinable()) {
+        mThread.join();
+    }
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus Gnss::close() {
+    ALOGD("close");
     sGnssCallback = nullptr;
-    return ndk::ScopedAStatus::ok();
+    return ScopedAStatus::ok();
 }
 
-ndk::ScopedAStatus Gnss::getExtensionAGnss(std::shared_ptr<IAGnss>* iAGnss) {
+ScopedAStatus Gnss::getExtensionAGnss(std::shared_ptr<IAGnss>* iAGnss) {
     ALOGD("Gnss::getExtensionAGnss");
     *iAGnss = SharedRefBase::make<AGnss>();
     return ndk::ScopedAStatus::ok();
 }
 
-ndk::ScopedAStatus Gnss::getExtensionPsds(std::shared_ptr<IGnssPsds>* iGnssPsds) {
-    ALOGD("Gnss::getExtensionPsds");
-    *iGnssPsds = SharedRefBase::make<GnssPsds>();
+ScopedAStatus Gnss::injectTime(int64_t timeMs, int64_t timeReferenceMs, int uncertaintyMs) {
+    ALOGD("injectTime. timeMs:%" PRId64 ", timeReferenceMs:%" PRId64 ", uncertaintyMs:%d", timeMs,
+          timeReferenceMs, uncertaintyMs);
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus Gnss::getExtensionAGnssRil(std::shared_ptr<IAGnssRil>* iAGnssRil) {
+    ALOGD("Gnss::getExtensionAGnssRil");
+    *iAGnssRil = SharedRefBase::make<AGnssRil>();
     return ndk::ScopedAStatus::ok();
 }
 
-ndk::ScopedAStatus Gnss::getExtensionGnssConfiguration(
+ScopedAStatus Gnss::injectLocation(const GnssLocation& location) {
+    ALOGD("injectLocation. lat:%lf, lng:%lf, acc:%f", location.latitudeDegrees,
+          location.longitudeDegrees, location.horizontalAccuracyMeters);
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus Gnss::injectBestLocation(const GnssLocation& location) {
+    ALOGD("injectBestLocation. lat:%lf, lng:%lf, acc:%f", location.latitudeDegrees,
+          location.longitudeDegrees, location.horizontalAccuracyMeters);
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus Gnss::deleteAidingData(GnssAidingData aidingDataFlags) {
+    ALOGD("deleteAidingData. flags:%d", (int)aidingDataFlags);
+    mFirstFixReceived = false;
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus Gnss::setPositionMode(GnssPositionMode, GnssPositionRecurrence, int minIntervalMs,
+                                    int /* preferredAccuracyMeters */, int /* preferredTimeMs */,
+                                    bool lowPowerMode) {
+    ALOGD("setPositionMode. minIntervalMs:%d, lowPowerMode:%d", minIntervalMs, (int)lowPowerMode);
+    mMinIntervalMs = minIntervalMs;
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus Gnss::getExtensionPsds(std::shared_ptr<IGnssPsds>* iGnssPsds) {
+    ALOGD("getExtensionPsds");
+    *iGnssPsds = SharedRefBase::make<GnssPsds>();
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus Gnss::getExtensionGnssConfiguration(
         std::shared_ptr<IGnssConfiguration>* iGnssConfiguration) {
-    ALOGD("Gnss::getExtensionGnssConfiguration");
+    ALOGD("getExtensionGnssConfiguration");
     if (mGnssConfiguration == nullptr) {
         mGnssConfiguration = SharedRefBase::make<GnssConfiguration>();
     }
     *iGnssConfiguration = mGnssConfiguration;
-    return ndk::ScopedAStatus::ok();
+    return ScopedAStatus::ok();
 }
 
-ndk::ScopedAStatus Gnss::getExtensionGnssPowerIndication(
+ScopedAStatus Gnss::getExtensionGnssPowerIndication(
         std::shared_ptr<IGnssPowerIndication>* iGnssPowerIndication) {
-    ALOGD("Gnss::getExtensionGnssPowerIndication");
+    ALOGD("getExtensionGnssPowerIndication");
     if (mGnssPowerIndication == nullptr) {
         mGnssPowerIndication = SharedRefBase::make<GnssPowerIndication>();
     }
 
     *iGnssPowerIndication = mGnssPowerIndication;
-    return ndk::ScopedAStatus::ok();
+    return ScopedAStatus::ok();
 }
 
-ndk::ScopedAStatus Gnss::getExtensionGnssMeasurement(
+ScopedAStatus Gnss::getExtensionGnssMeasurement(
         std::shared_ptr<IGnssMeasurementInterface>* iGnssMeasurement) {
-    ALOGD("Gnss::getExtensionGnssMeasurement");
+    ALOGD("getExtensionGnssMeasurement");
 
     *iGnssMeasurement = SharedRefBase::make<GnssMeasurementInterface>();
-    return ndk::ScopedAStatus::ok();
+    return ScopedAStatus::ok();
 }
 
-ndk::ScopedAStatus Gnss::getExtensionGnssBatching(std::shared_ptr<IGnssBatching>* iGnssBatching) {
-    ALOGD("Gnss::getExtensionGnssBatching");
+ScopedAStatus Gnss::getExtensionGnssBatching(std::shared_ptr<IGnssBatching>* iGnssBatching) {
+    ALOGD("getExtensionGnssBatching");
 
     *iGnssBatching = SharedRefBase::make<GnssBatching>();
-    return ndk::ScopedAStatus::ok();
+    return ScopedAStatus::ok();
 }
 
-ndk::ScopedAStatus Gnss::getExtensionGnssGeofence(std::shared_ptr<IGnssGeofence>* iGnssGeofence) {
-    ALOGD("Gnss::getExtensionGnssGeofence");
+ScopedAStatus Gnss::getExtensionGnssGeofence(std::shared_ptr<IGnssGeofence>* iGnssGeofence) {
+    ALOGD("getExtensionGnssGeofence");
 
     *iGnssGeofence = SharedRefBase::make<GnssGeofence>();
-    return ndk::ScopedAStatus::ok();
+    return ScopedAStatus::ok();
 }
 
-ndk::ScopedAStatus Gnss::getExtensionGnssNavigationMessage(
+ScopedAStatus Gnss::getExtensionGnssNavigationMessage(
         std::shared_ptr<IGnssNavigationMessageInterface>* iGnssNavigationMessage) {
-    ALOGD("Gnss::getExtensionGnssNavigationMessage");
+    ALOGD("getExtensionGnssNavigationMessage");
 
     *iGnssNavigationMessage = SharedRefBase::make<GnssNavigationMessageInterface>();
-    return ndk::ScopedAStatus::ok();
+    return ScopedAStatus::ok();
 }
 
 ndk::ScopedAStatus Gnss::getExtensionGnssDebug(std::shared_ptr<IGnssDebug>* iGnssDebug) {
@@ -128,4 +280,30 @@
     return ndk::ScopedAStatus::ok();
 }
 
+ndk::ScopedAStatus Gnss::getExtensionGnssVisibilityControl(
+        std::shared_ptr<visibility_control::IGnssVisibilityControl>* iGnssVisibilityControl) {
+    ALOGD("Gnss::getExtensionGnssVisibilityControl");
+
+    *iGnssVisibilityControl = SharedRefBase::make<visibility_control::GnssVisibilityControl>();
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus Gnss::getExtensionGnssAntennaInfo(
+        std::shared_ptr<IGnssAntennaInfo>* iGnssAntennaInfo) {
+    ALOGD("Gnss::getExtensionGnssAntennaInfo");
+
+    *iGnssAntennaInfo = SharedRefBase::make<GnssAntennaInfo>();
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus Gnss::getExtensionMeasurementCorrections(
+        std::shared_ptr<measurement_corrections::IMeasurementCorrectionsInterface>*
+                iMeasurementCorrections) {
+    ALOGD("Gnss::getExtensionMeasurementCorrections");
+
+    *iMeasurementCorrections =
+            SharedRefBase::make<measurement_corrections::MeasurementCorrectionsInterface>();
+    return ndk::ScopedAStatus::ok();
+}
+
 }  // namespace aidl::android::hardware::gnss
diff --git a/gnss/aidl/default/Gnss.h b/gnss/aidl/default/Gnss.h
index f59607f..36874b8 100644
--- a/gnss/aidl/default/Gnss.h
+++ b/gnss/aidl/default/Gnss.h
@@ -17,13 +17,20 @@
 #pragma once
 
 #include <aidl/android/hardware/gnss/BnAGnss.h>
+#include <aidl/android/hardware/gnss/BnAGnssRil.h>
 #include <aidl/android/hardware/gnss/BnGnss.h>
+#include <aidl/android/hardware/gnss/BnGnssAntennaInfo.h>
 #include <aidl/android/hardware/gnss/BnGnssBatching.h>
 #include <aidl/android/hardware/gnss/BnGnssConfiguration.h>
 #include <aidl/android/hardware/gnss/BnGnssDebug.h>
 #include <aidl/android/hardware/gnss/BnGnssMeasurementInterface.h>
 #include <aidl/android/hardware/gnss/BnGnssPowerIndication.h>
 #include <aidl/android/hardware/gnss/BnGnssPsds.h>
+#include <aidl/android/hardware/gnss/measurement_corrections/BnMeasurementCorrectionsInterface.h>
+#include <aidl/android/hardware/gnss/visibility_control/BnGnssVisibilityControl.h>
+#include <atomic>
+#include <mutex>
+#include <thread>
 #include "GnssConfiguration.h"
 #include "GnssPowerIndication.h"
 
@@ -31,8 +38,22 @@
 
 class Gnss : public BnGnss {
   public:
+    Gnss();
+    ~Gnss() { stop(); };
     ndk::ScopedAStatus setCallback(const std::shared_ptr<IGnssCallback>& callback) override;
+    ndk::ScopedAStatus start() override;
+    ndk::ScopedAStatus stop() override;
     ndk::ScopedAStatus close() override;
+
+    ndk::ScopedAStatus injectTime(int64_t timeMs, int64_t timeReferenceMs,
+                                  int uncertaintyMs) override;
+    ndk::ScopedAStatus injectLocation(const GnssLocation& location) override;
+    ndk::ScopedAStatus injectBestLocation(const GnssLocation& location) override;
+    ndk::ScopedAStatus deleteAidingData(GnssAidingData aidingDataFlags) override;
+    ndk::ScopedAStatus setPositionMode(GnssPositionMode mode, GnssPositionRecurrence recurrence,
+                                       int minIntervalMs, int preferredAccuracyMeters,
+                                       int preferredTimeMs, bool lowPowerMode) override;
+
     ndk::ScopedAStatus getExtensionPsds(std::shared_ptr<IGnssPsds>* iGnssPsds) override;
     ndk::ScopedAStatus getExtensionGnssConfiguration(
             std::shared_ptr<IGnssConfiguration>* iGnssConfiguration) override;
@@ -47,13 +68,37 @@
     ndk::ScopedAStatus getExtensionGnssNavigationMessage(
             std::shared_ptr<IGnssNavigationMessageInterface>* iGnssNavigationMessage) override;
     ndk::ScopedAStatus getExtensionAGnss(std::shared_ptr<IAGnss>* iAGnss) override;
+    ndk::ScopedAStatus getExtensionAGnssRil(std::shared_ptr<IAGnssRil>* iAGnssRil) override;
     ndk::ScopedAStatus getExtensionGnssDebug(std::shared_ptr<IGnssDebug>* iGnssDebug) override;
+    ndk::ScopedAStatus getExtensionGnssVisibilityControl(
+            std::shared_ptr<android::hardware::gnss::visibility_control::IGnssVisibilityControl>*
+                    iGnssVisibilityControl) override;
+    ndk::ScopedAStatus getExtensionGnssAntennaInfo(
+            std::shared_ptr<IGnssAntennaInfo>* iGnssAntennaInfo) override;
+    ndk::ScopedAStatus getExtensionMeasurementCorrections(
+            std::shared_ptr<android::hardware::gnss::measurement_corrections::
+                                    IMeasurementCorrectionsInterface>* iMeasurementCorrections)
+            override;
 
     std::shared_ptr<GnssConfiguration> mGnssConfiguration;
     std::shared_ptr<GnssPowerIndication> mGnssPowerIndication;
 
   private:
+    void reportLocation(const GnssLocation&) const;
+    void reportSvStatus(const std::vector<IGnssCallback::GnssSvInfo>& svInfoList) const;
+    std::vector<IGnssCallback::GnssSvInfo> filterBlocklistedSatellites(
+            std::vector<IGnssCallback::GnssSvInfo> gnssSvInfoList);
+    void reportGnssStatusValue(const IGnssCallback::GnssStatusValue gnssStatusValue) const;
+    std::unique_ptr<GnssLocation> getLocationFromHW();
+
     static std::shared_ptr<IGnssCallback> sGnssCallback;
+
+    std::atomic<long> mMinIntervalMs;
+    std::atomic<bool> mIsActive;
+    std::atomic<bool> mFirstFixReceived;
+    std::thread mThread;
+
+    mutable std::mutex mMutex;
 };
 
 }  // namespace aidl::android::hardware::gnss
diff --git a/gnss/aidl/default/GnssAntennaInfo.cpp b/gnss/aidl/default/GnssAntennaInfo.cpp
new file mode 100644
index 0000000..72def71
--- /dev/null
+++ b/gnss/aidl/default/GnssAntennaInfo.cpp
@@ -0,0 +1,149 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "GnssAntennaInfoAidl"
+
+#include "GnssAntennaInfo.h"
+#include <aidl/android/hardware/gnss/BnGnss.h>
+#include <log/log.h>
+#include "Utils.h"
+
+namespace aidl::android::hardware::gnss {
+
+using namespace ::android::hardware::gnss;
+using Row = IGnssAntennaInfoCallback::Row;
+using Coord = IGnssAntennaInfoCallback::Coord;
+
+std::shared_ptr<IGnssAntennaInfoCallback> GnssAntennaInfo::sCallback = nullptr;
+
+GnssAntennaInfo::GnssAntennaInfo() : mMinIntervalMs(1000) {}
+
+GnssAntennaInfo::~GnssAntennaInfo() {
+    stop();
+}
+
+// Methods from ::android::hardware::gnss::V2_1::IGnssAntennaInfo follow.
+ndk::ScopedAStatus GnssAntennaInfo::setCallback(
+        const std::shared_ptr<IGnssAntennaInfoCallback>& callback) {
+    ALOGD("setCallback");
+    std::unique_lock<std::mutex> lock(mMutex);
+    sCallback = callback;
+
+    if (mIsActive) {
+        ALOGW("GnssAntennaInfo callback already set. Resetting the callback...");
+        stop();
+    }
+    start();
+
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus GnssAntennaInfo::close() {
+    ALOGD("close");
+    stop();
+    std::unique_lock<std::mutex> lock(mMutex);
+    sCallback = nullptr;
+    return ndk::ScopedAStatus::ok();
+}
+
+void GnssAntennaInfo::start() {
+    ALOGD("start");
+    mIsActive = true;
+    mThread = std::thread([this]() {
+        while (mIsActive == true) {
+            if (sCallback != nullptr) {
+                IGnssAntennaInfoCallback::GnssAntennaInfo mockAntennaInfo_1 = {
+                        .carrierFrequencyHz = 1575420000,
+                        .phaseCenterOffsetCoordinateMillimeters = Coord{.x = 1,
+                                                                        .xUncertainty = 0.1,
+                                                                        .y = 2,
+                                                                        .yUncertainty = 0.1,
+                                                                        .z = 3,
+                                                                        .zUncertainty = 0.1},
+                        .phaseCenterVariationCorrectionMillimeters =
+                                {
+                                        Row{std::vector<double>{1, -1, 5, -2, 3, -1}},
+                                        Row{std::vector<double>{-2, 3, 2, 0, 1, 2}},
+                                        Row{std::vector<double>{1, 3, 2, -1, -3, 5}},
+                                },
+                        .phaseCenterVariationCorrectionUncertaintyMillimeters =
+                                {
+                                        Row{std::vector<double>{0.1, 0.2, 0.4, 0.1, 0.2, 0.3}},
+                                        Row{std::vector<double>{0.3, 0.2, 0.3, 0.6, 0.1, 0.1}},
+                                        Row{std::vector<double>{0.1, 0.1, 0.4, 0.2, 0.5, 0.3}},
+                                },
+                        .signalGainCorrectionDbi =
+                                {
+                                        Row{std::vector<double>{2, -3, 1, -3, 0, -4}},
+                                        Row{std::vector<double>{1, 0, -4, 1, 3, -2}},
+                                        Row{std::vector<double>{3, -2, 0, -2, 3, 0}},
+                                },
+                        .signalGainCorrectionUncertaintyDbi =
+                                {
+                                        Row{std::vector<double>{0.3, 0.1, 0.2, 0.6, 0.1, 0.3}},
+                                        Row{std::vector<double>{0.1, 0.1, 0.5, 0.2, 0.3, 0.1}},
+                                        Row{std::vector<double>{0.2, 0.4, 0.2, 0.1, 0.1, 0.2}},
+                                },
+                };
+
+                IGnssAntennaInfoCallback::GnssAntennaInfo mockAntennaInfo_2 = {
+                        .carrierFrequencyHz = 1176450000,
+                        .phaseCenterOffsetCoordinateMillimeters = Coord{.x = 5,
+                                                                        .xUncertainty = 0.1,
+                                                                        .y = 6,
+                                                                        .yUncertainty = 0.1,
+                                                                        .z = 7,
+                                                                        .zUncertainty = 0.1},
+                };
+
+                std::vector<IGnssAntennaInfoCallback::GnssAntennaInfo> mockAntennaInfos = {
+                        mockAntennaInfo_1,
+                        mockAntennaInfo_2,
+                };
+                this->reportAntennaInfo(mockAntennaInfos);
+            }
+
+            /** For mock implementation this is good. On real device, we should only report
+                antennaInfo at start and when there is a configuration change. **/
+            std::this_thread::sleep_for(std::chrono::milliseconds(mMinIntervalMs));
+        }
+    });
+}
+
+void GnssAntennaInfo::stop() {
+    ALOGD("stop");
+    mIsActive = false;
+    if (mThread.joinable()) {
+        mThread.join();
+    }
+}
+
+void GnssAntennaInfo::reportAntennaInfo(
+        const std::vector<IGnssAntennaInfoCallback::GnssAntennaInfo>& antennaInfo) const {
+    std::unique_lock<std::mutex> lock(mMutex);
+
+    if (sCallback == nullptr) {
+        ALOGE("%s: No non-null callback", __func__);
+        return;
+    }
+
+    auto ret = sCallback->gnssAntennaInfoCb(antennaInfo);
+    if (!ret.isOk()) {
+        ALOGE("%s: Unable to invoke callback", __func__);
+    }
+}
+
+}  // namespace aidl::android::hardware::gnss
diff --git a/gnss/aidl/default/GnssAntennaInfo.h b/gnss/aidl/default/GnssAntennaInfo.h
new file mode 100644
index 0000000..2cf7b13
--- /dev/null
+++ b/gnss/aidl/default/GnssAntennaInfo.h
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/gnss/BnGnssAntennaInfo.h>
+#include <atomic>
+#include <mutex>
+#include <thread>
+
+namespace aidl::android::hardware::gnss {
+
+struct GnssAntennaInfo : public BnGnssAntennaInfo {
+  public:
+    GnssAntennaInfo();
+    ~GnssAntennaInfo();
+    ndk::ScopedAStatus setCallback(
+            const std::shared_ptr<IGnssAntennaInfoCallback>& callback) override;
+    ndk::ScopedAStatus close() override;
+
+  private:
+    void start();
+    void stop();
+    void reportAntennaInfo(
+            const std::vector<IGnssAntennaInfoCallback::GnssAntennaInfo>& antennaInfo) const;
+
+    // Guarded by mMutex
+    static std::shared_ptr<IGnssAntennaInfoCallback> sCallback;
+
+    std::atomic<bool> mIsActive;
+    std::atomic<long> mMinIntervalMs;
+    std::thread mThread;
+
+    // Synchronization lock for sCallback
+    mutable std::mutex mMutex;
+};
+
+}  // namespace aidl::android::hardware::gnss
diff --git a/gnss/aidl/default/GnssBatching.cpp b/gnss/aidl/default/GnssBatching.cpp
index b8be5e5..33e1fd5 100644
--- a/gnss/aidl/default/GnssBatching.cpp
+++ b/gnss/aidl/default/GnssBatching.cpp
@@ -52,17 +52,19 @@
     return ndk::ScopedAStatus::ok();
 }
 
-ndk::ScopedAStatus GnssBatching::start(int64_t periodNanos, int flags) {
-    ALOGD("start: periodNanos=%" PRId64 ", flags=%d", periodNanos, flags);
+ndk::ScopedAStatus GnssBatching::start(const Options& options) {
+    ALOGD("start: periodNanos=%" PRId64 ", minDistanceMeters=%f, flags=%d", options.periodNanos,
+          options.minDistanceMeters, options.flags);
     if (mIsActive) {
         ALOGW("Gnss has started. Restarting...");
         stop();
     }
 
-    mWakeUpOnFifoFull = (flags & IGnssBatching::WAKEUP_ON_FIFO_FULL) ? true : false;
     // mMinIntervalMs is not smaller than 1 sec
-    periodNanos = (periodNanos < 1e9) ? 1e9 : periodNanos;
+    long periodNanos = (options.periodNanos < 1e9) ? 1e9 : options.periodNanos;
     mMinIntervalMs = periodNanos / 1e6;
+    mWakeUpOnFifoFull = (options.flags & IGnssBatching::WAKEUP_ON_FIFO_FULL) ? true : false;
+    mMinDistanceMeters = options.minDistanceMeters;
 
     mIsActive = true;
     mThread = std::thread([this]() {
diff --git a/gnss/aidl/default/GnssBatching.h b/gnss/aidl/default/GnssBatching.h
index 7cd6e85..6d1d809 100644
--- a/gnss/aidl/default/GnssBatching.h
+++ b/gnss/aidl/default/GnssBatching.h
@@ -28,7 +28,7 @@
     ~GnssBatching();
     ndk::ScopedAStatus init(const std::shared_ptr<IGnssBatchingCallback>& callback) override;
     ndk::ScopedAStatus getBatchSize(int* size) override;
-    ndk::ScopedAStatus start(int64_t periodNanos, int flags) override;
+    ndk::ScopedAStatus start(const Options& options) override;
     ndk::ScopedAStatus flush() override;
     ndk::ScopedAStatus stop() override;
     ndk::ScopedAStatus cleanup() override;
@@ -42,6 +42,7 @@
     std::thread mThread;
     std::atomic<bool> mIsActive;
     std::atomic<long> mMinIntervalMs;
+    std::atomic<float> mMinDistanceMeters;
     std::atomic<bool> mWakeUpOnFifoFull;
 
     // Synchronization lock for sCallback
diff --git a/gnss/aidl/default/GnssConfiguration.cpp b/gnss/aidl/default/GnssConfiguration.cpp
index 30e0d8c..96a1aa2 100644
--- a/gnss/aidl/default/GnssConfiguration.cpp
+++ b/gnss/aidl/default/GnssConfiguration.cpp
@@ -49,4 +49,14 @@
     return (mBlocklistedSourceSet.find(source) != mBlocklistedSourceSet.end());
 }
 
+bool GnssConfiguration::isBlocklisted(const IGnssCallback::GnssSvInfo& gnssSvInfo) const {
+    std::unique_lock<std::recursive_mutex> lock(mMutex);
+    if (mBlocklistedConstellationSet.find(gnssSvInfo.constellation) !=
+        mBlocklistedConstellationSet.end()) {
+        return true;
+    }
+    BlocklistedSource source = {.constellation = gnssSvInfo.constellation, .svid = gnssSvInfo.svid};
+    return (mBlocklistedSourceSet.find(source) != mBlocklistedSourceSet.end());
+}
+
 }  // namespace aidl::android::hardware::gnss
diff --git a/gnss/aidl/default/GnssConfiguration.h b/gnss/aidl/default/GnssConfiguration.h
index 491733c..3c77f32 100644
--- a/gnss/aidl/default/GnssConfiguration.h
+++ b/gnss/aidl/default/GnssConfiguration.h
@@ -16,6 +16,7 @@
 
 #pragma once
 
+#include <aidl/android/hardware/gnss/BnGnssCallback.h>
 #include <aidl/android/hardware/gnss/BnGnssConfiguration.h>
 #include <android/hardware/gnss/2.1/IGnssCallback.h>
 #include <mutex>
@@ -62,6 +63,7 @@
     ndk::ScopedAStatus setBlocklist(const vector<BlocklistedSource>& blocklist) override;
 
     bool isBlocklistedV2_1(const GnssSvInfoV2_1& gnssSvInfo) const;
+    bool isBlocklisted(const IGnssCallback::GnssSvInfo& gnssSvInfo) const;
 
   private:
     BlocklistedSourceSet mBlocklistedSourceSet;
diff --git a/gnss/aidl/default/GnssMeasurementInterface.cpp b/gnss/aidl/default/GnssMeasurementInterface.cpp
index 9e4f7c7..2c7241b 100644
--- a/gnss/aidl/default/GnssMeasurementInterface.cpp
+++ b/gnss/aidl/default/GnssMeasurementInterface.cpp
@@ -56,11 +56,29 @@
     return ndk::ScopedAStatus::ok();
 }
 
+ndk::ScopedAStatus GnssMeasurementInterface::setCallbackWithOptions(
+        const std::shared_ptr<IGnssMeasurementCallback>& callback, const Options& options) {
+    ALOGD("setCallbackWithOptions: fullTracking:%d, corrVec:%d, intervalMs:%d",
+          (int)options.enableFullTracking, (int)options.enableCorrVecOutputs, options.intervalMs);
+    std::unique_lock<std::mutex> lock(mMutex);
+    sCallback = callback;
+
+    if (mIsActive) {
+        ALOGW("GnssMeasurement callback already set. Resetting the callback...");
+        stop();
+    }
+    mMinIntervalMillis = options.intervalMs;
+    start(options.enableCorrVecOutputs);
+
+    return ndk::ScopedAStatus::ok();
+}
+
 ndk::ScopedAStatus GnssMeasurementInterface::close() {
     ALOGD("close");
     stop();
     std::unique_lock<std::mutex> lock(mMutex);
     sCallback = nullptr;
+    mMinIntervalMillis = 1000;
     return ndk::ScopedAStatus::ok();
 }
 
diff --git a/gnss/aidl/default/GnssMeasurementInterface.h b/gnss/aidl/default/GnssMeasurementInterface.h
index db63515..bf77806 100644
--- a/gnss/aidl/default/GnssMeasurementInterface.h
+++ b/gnss/aidl/default/GnssMeasurementInterface.h
@@ -32,6 +32,9 @@
                                    const bool enableFullTracking,
                                    const bool enableCorrVecOutputs) override;
     ndk::ScopedAStatus close() override;
+    ndk::ScopedAStatus setCallbackWithOptions(
+            const std::shared_ptr<IGnssMeasurementCallback>& callback,
+            const Options& options) override;
 
   private:
     void start(const bool enableCorrVecOutputs);
diff --git a/gnss/aidl/default/GnssVisibilityControl.cpp b/gnss/aidl/default/GnssVisibilityControl.cpp
new file mode 100644
index 0000000..208d73c
--- /dev/null
+++ b/gnss/aidl/default/GnssVisibilityControl.cpp
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "GnssVisibilityControl"
+
+#include "GnssVisibilityControl.h"
+#include <log/log.h>
+
+namespace aidl::android::hardware::gnss::visibility_control {
+
+std::shared_ptr<IGnssVisibilityControlCallback> GnssVisibilityControl::sCallback = nullptr;
+
+ndk::ScopedAStatus GnssVisibilityControl::enableNfwLocationAccess(
+        const std::vector<std::string>& proxyApps) {
+    std::string os;
+    bool first = true;
+    for (const auto& proxyApp : proxyApps) {
+        if (first) {
+            first = false;
+        } else {
+            os += " ";
+        }
+        os += proxyApp;
+    }
+
+    ALOGD("GnssVisibilityControl::enableNfwLocationAccess proxyApps: %s", os.c_str());
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus GnssVisibilityControl::setCallback(
+        const std::shared_ptr<IGnssVisibilityControlCallback>& callback) {
+    ALOGD("GnssVisibilityControl::setCallback");
+    std::unique_lock<std::mutex> lock(mMutex);
+    sCallback = callback;
+    return ndk::ScopedAStatus::ok();
+}
+
+}  // namespace aidl::android::hardware::gnss::visibility_control
diff --git a/gnss/aidl/default/GnssVisibilityControl.h b/gnss/aidl/default/GnssVisibilityControl.h
new file mode 100644
index 0000000..5b36442
--- /dev/null
+++ b/gnss/aidl/default/GnssVisibilityControl.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/gnss/visibility_control/BnGnssVisibilityControl.h>
+
+namespace aidl::android::hardware::gnss::visibility_control {
+
+struct GnssVisibilityControl : public BnGnssVisibilityControl {
+  public:
+    ndk::ScopedAStatus enableNfwLocationAccess(const std::vector<std::string>& hostname) override;
+    ndk::ScopedAStatus setCallback(
+            const std::shared_ptr<IGnssVisibilityControlCallback>& callback) override;
+
+  private:
+    // Synchronization lock for sCallback
+    mutable std::mutex mMutex;
+    // Guarded by mMutex
+    static std::shared_ptr<IGnssVisibilityControlCallback> sCallback;
+};
+
+}  // namespace aidl::android::hardware::gnss::visibility_control
diff --git a/gnss/aidl/default/MeasurementCorrectionsInterface.cpp b/gnss/aidl/default/MeasurementCorrectionsInterface.cpp
new file mode 100644
index 0000000..0f1851c
--- /dev/null
+++ b/gnss/aidl/default/MeasurementCorrectionsInterface.cpp
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "MeasurementCorrectionsInterface"
+
+#include "MeasurementCorrectionsInterface.h"
+#include <inttypes.h>
+#include <log/log.h>
+
+namespace aidl::android::hardware::gnss::measurement_corrections {
+
+std::shared_ptr<IMeasurementCorrectionsCallback> MeasurementCorrectionsInterface::sCallback =
+        nullptr;
+
+ndk::ScopedAStatus MeasurementCorrectionsInterface::setCorrections(
+        const MeasurementCorrections& corrections) {
+    ALOGD("setCorrections");
+    ALOGD("corrections = lat: %f, lng: %f, alt: %f, hUnc: %f, vUnc: %f, toa: %llu, "
+          "satCorrections.size: %d",
+          corrections.latitudeDegrees, corrections.longitudeDegrees, corrections.altitudeMeters,
+          corrections.horizontalPositionUncertaintyMeters,
+          corrections.verticalPositionUncertaintyMeters,
+          static_cast<unsigned long long>(corrections.toaGpsNanosecondsOfWeek),
+          static_cast<int>(corrections.satCorrections.size()));
+    for (auto singleSatCorrection : corrections.satCorrections) {
+        ALOGD("singleSatCorrection = flags: %d, constellation: %d, svid: %d"
+              ", cfHz: %" PRId64 ", probLos: %f, epl: %f, eplUnc: %f",
+              singleSatCorrection.singleSatCorrectionFlags, singleSatCorrection.constellation,
+              singleSatCorrection.svid, singleSatCorrection.carrierFrequencyHz,
+              singleSatCorrection.probSatIsLos, singleSatCorrection.excessPathLengthMeters,
+              singleSatCorrection.excessPathLengthUncertaintyMeters);
+        ALOGD("reflecting plane = lat: %f, lng: %f, alt: %f, azm: %f",
+              singleSatCorrection.reflectingPlane.latitudeDegrees,
+              singleSatCorrection.reflectingPlane.longitudeDegrees,
+              singleSatCorrection.reflectingPlane.altitudeMeters,
+              singleSatCorrection.reflectingPlane.azimuthDegrees);
+    }
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus MeasurementCorrectionsInterface::setCallback(
+        const std::shared_ptr<IMeasurementCorrectionsCallback>& callback) {
+    ALOGD("MeasurementCorrections::setCallback");
+    std::unique_lock<std::mutex> lock(mMutex);
+    sCallback = callback;
+    auto ret = sCallback->setCapabilitiesCb(
+            IMeasurementCorrectionsCallback::CAPABILITY_LOS_SATS |
+            IMeasurementCorrectionsCallback::CAPABILITY_EXCESS_PATH_LENGTH |
+            IMeasurementCorrectionsCallback::CAPABILITY_REFLECTING_PLANE);
+    if (!ret.isOk()) {
+        ALOGE("%s: Unable to invoke callback", __func__);
+    }
+    return ndk::ScopedAStatus::ok();
+}
+}  // namespace aidl::android::hardware::gnss::measurement_corrections
diff --git a/gnss/aidl/default/MeasurementCorrectionsInterface.h b/gnss/aidl/default/MeasurementCorrectionsInterface.h
new file mode 100644
index 0000000..af58725
--- /dev/null
+++ b/gnss/aidl/default/MeasurementCorrectionsInterface.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/gnss/measurement_corrections/BnMeasurementCorrectionsInterface.h>
+
+namespace aidl::android::hardware::gnss::measurement_corrections {
+
+struct MeasurementCorrectionsInterface : public BnMeasurementCorrectionsInterface {
+  public:
+    ndk::ScopedAStatus setCorrections(const MeasurementCorrections& corrections) override;
+    ndk::ScopedAStatus setCallback(
+            const std::shared_ptr<IMeasurementCorrectionsCallback>& callback) override;
+
+  private:
+    // Synchronization lock for sCallback
+    mutable std::mutex mMutex;
+    // Guarded by mMutex
+    static std::shared_ptr<IMeasurementCorrectionsCallback> sCallback;
+};
+
+}  // namespace aidl::android::hardware::gnss::measurement_corrections
diff --git a/gnss/aidl/vts/AGnssRilCallbackAidl.cpp b/gnss/aidl/vts/AGnssRilCallbackAidl.cpp
new file mode 100644
index 0000000..4e4166d
--- /dev/null
+++ b/gnss/aidl/vts/AGnssRilCallbackAidl.cpp
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "AGnssRilCallbackAidl.h"
+#include <log/log.h>
+
+android::binder::Status AGnssRilCallbackAidl::requestSetIdCb(int setIdflag) {
+    ALOGI("requestSetIdCb setIdflag %d", setIdflag);
+    return android::binder::Status::ok();
+}
+
+android::binder::Status AGnssRilCallbackAidl::requestRefLocCb() {
+    ALOGI("requestRefLocCb");
+    return android::binder::Status::ok();
+}
diff --git a/gnss/aidl/vts/AGnssRilCallbackAidl.h b/gnss/aidl/vts/AGnssRilCallbackAidl.h
new file mode 100644
index 0000000..74b34ee
--- /dev/null
+++ b/gnss/aidl/vts/AGnssRilCallbackAidl.h
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android/hardware/gnss/BnAGnssRilCallback.h>
+
+/** Implementation for IAGnssRilCallback. */
+class AGnssRilCallbackAidl : public android::hardware::gnss::BnAGnssRilCallback {
+  public:
+    AGnssRilCallbackAidl(){};
+    ~AGnssRilCallbackAidl(){};
+    android::binder::Status requestSetIdCb(int setIdflag) override;
+    android::binder::Status requestRefLocCb() override;
+};
diff --git a/gnss/aidl/vts/Android.bp b/gnss/aidl/vts/Android.bp
index 041d579..f02a41e 100644
--- a/gnss/aidl/vts/Android.bp
+++ b/gnss/aidl/vts/Android.bp
@@ -31,12 +31,16 @@
         "gnss_hal_test.cpp",
         "gnss_hal_test_cases.cpp",
         "AGnssCallbackAidl.cpp",
+        "AGnssRilCallbackAidl.cpp",
+        "GnssAntennaInfoCallbackAidl.cpp",
         "GnssBatchingCallback.cpp",
         "GnssCallbackAidl.cpp",
         "GnssGeofenceCallback.cpp",
         "GnssMeasurementCallbackAidl.cpp",
         "GnssNavigationMessageCallback.cpp",
         "GnssPowerIndicationCallback.cpp",
+        "GnssVisibilityControlCallback.cpp",
+        "MeasurementCorrectionsCallback.cpp",
         "VtsHalGnssTargetTest.cpp",
     ],
     shared_libs: [
diff --git a/gnss/aidl/vts/GnssAntennaInfoCallbackAidl.cpp b/gnss/aidl/vts/GnssAntennaInfoCallbackAidl.cpp
new file mode 100644
index 0000000..11001cd
--- /dev/null
+++ b/gnss/aidl/vts/GnssAntennaInfoCallbackAidl.cpp
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "GnssAntennaInfoCallbackAidl.h"
+#include <inttypes.h>
+#include <log/log.h>
+
+android::binder::Status GnssAntennaInfoCallbackAidl::gnssAntennaInfoCb(
+        const std::vector<IGnssAntennaInfoCallback::GnssAntennaInfo>& gnssAntennaInfos) {
+    ALOGD("GnssAntennaInfo received. Size = %d", (int)gnssAntennaInfos.size());
+    antenna_info_cbq_.store(gnssAntennaInfos);
+    return android::binder::Status::ok();
+}
diff --git a/gnss/aidl/vts/GnssAntennaInfoCallbackAidl.h b/gnss/aidl/vts/GnssAntennaInfoCallbackAidl.h
new file mode 100644
index 0000000..77e1057
--- /dev/null
+++ b/gnss/aidl/vts/GnssAntennaInfoCallbackAidl.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android/hardware/gnss/BnGnssAntennaInfoCallback.h>
+#include <vector>
+#include "GnssCallbackEventQueue.h"
+
+/** Implementation for IGnssAntennaInfoCallback. */
+class GnssAntennaInfoCallbackAidl : public android::hardware::gnss::BnGnssAntennaInfoCallback {
+  public:
+    GnssAntennaInfoCallbackAidl() : antenna_info_cbq_("info"){};
+    ~GnssAntennaInfoCallbackAidl(){};
+
+    android::binder::Status gnssAntennaInfoCb(
+            const std::vector<IGnssAntennaInfoCallback::GnssAntennaInfo>& gnssAntennaInfos)
+            override;
+
+    android::hardware::gnss::common::GnssCallbackEventQueue<
+            std::vector<IGnssAntennaInfoCallback::GnssAntennaInfo>>
+            antenna_info_cbq_;
+};
diff --git a/gnss/aidl/vts/GnssBatchingCallback.cpp b/gnss/aidl/vts/GnssBatchingCallback.cpp
index 2da3b12..d4eb0a5 100644
--- a/gnss/aidl/vts/GnssBatchingCallback.cpp
+++ b/gnss/aidl/vts/GnssBatchingCallback.cpp
@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+#define LOG_TAG "GnssBatchingCallbackAidl"
+
 #include "GnssBatchingCallback.h"
 #include <inttypes.h>
 #include <log/log.h>
diff --git a/gnss/aidl/vts/GnssCallbackAidl.cpp b/gnss/aidl/vts/GnssCallbackAidl.cpp
index f5c745b..77a2506 100644
--- a/gnss/aidl/vts/GnssCallbackAidl.cpp
+++ b/gnss/aidl/vts/GnssCallbackAidl.cpp
@@ -14,11 +14,62 @@
  * limitations under the License.
  */
 
+#define LOG_TAG "GnssCallbackAidl"
+
 #include "GnssCallbackAidl.h"
 #include <log/log.h>
 
-android::binder::Status GnssCallbackAidl::gnssSetCapabilitiesCb(const int capabilities) {
-    ALOGI("Capabilities received %d", capabilities);
+using android::binder::Status;
+using android::hardware::gnss::GnssLocation;
+using GnssSvInfo = android::hardware::gnss::IGnssCallback::GnssSvInfo;
+using GnssSystemInfo = android::hardware::gnss::IGnssCallback::GnssSystemInfo;
+
+Status GnssCallbackAidl::gnssSetCapabilitiesCb(const int capabilities) {
+    ALOGI("Capabilities received %#08x", capabilities);
     capabilities_cbq_.store(capabilities);
-    return android::binder::Status::ok();
+    return Status::ok();
+}
+
+Status GnssCallbackAidl::gnssStatusCb(const GnssStatusValue /* status */) {
+    ALOGI("gnssSvStatusCb");
+    return Status::ok();
+}
+
+Status GnssCallbackAidl::gnssSvStatusCb(const std::vector<GnssSvInfo>& svInfoList) {
+    ALOGI("gnssSvStatusCb. Size = %d", (int)svInfoList.size());
+    sv_info_list_cbq_.store(svInfoList);
+    return Status::ok();
+}
+
+Status GnssCallbackAidl::gnssLocationCb(const GnssLocation& location) {
+    ALOGI("Location received");
+    location_cbq_.store(location);
+    return Status::ok();
+}
+
+Status GnssCallbackAidl::gnssNmeaCb(const int64_t /* timestamp */, const std::string& /* nmea */) {
+    return Status::ok();
+}
+
+Status GnssCallbackAidl::gnssAcquireWakelockCb() {
+    return Status::ok();
+}
+
+Status GnssCallbackAidl::gnssReleaseWakelockCb() {
+    return Status::ok();
+}
+
+Status GnssCallbackAidl::gnssSetSystemInfoCb(const GnssSystemInfo& info) {
+    ALOGI("gnssSetSystemInfoCb, year=%d, name=%s", info.yearOfHw, info.name.c_str());
+    info_cbq_.store(info);
+    return Status::ok();
+}
+
+Status GnssCallbackAidl::gnssRequestTimeCb() {
+    return Status::ok();
+}
+
+Status GnssCallbackAidl::gnssRequestLocationCb(const bool /* independentFromGnss */,
+                                               const bool /* isUserEmergency */) {
+    return Status::ok();
 }
diff --git a/gnss/aidl/vts/GnssCallbackAidl.h b/gnss/aidl/vts/GnssCallbackAidl.h
index 7f802ea..209728d 100644
--- a/gnss/aidl/vts/GnssCallbackAidl.h
+++ b/gnss/aidl/vts/GnssCallbackAidl.h
@@ -22,11 +22,37 @@
 /* Callback class for data & Event. */
 class GnssCallbackAidl : public android::hardware::gnss::BnGnssCallback {
   public:
-    GnssCallbackAidl() : capabilities_cbq_("capabilities"){};
+    GnssCallbackAidl()
+        : capabilities_cbq_("capabilities"),
+          info_cbq_("system_info"),
+          location_cbq_("location"),
+          sv_info_list_cbq_("sv_info"){};
     ~GnssCallbackAidl(){};
 
     android::binder::Status gnssSetCapabilitiesCb(const int capabilities) override;
+    android::binder::Status gnssStatusCb(const GnssStatusValue status) override;
+    android::binder::Status gnssSvStatusCb(const std::vector<GnssSvInfo>& svInfoList) override;
+    android::binder::Status gnssLocationCb(
+            const android::hardware::gnss::GnssLocation& location) override;
+    android::binder::Status gnssNmeaCb(const int64_t timestamp, const std::string& nmea) override;
+    android::binder::Status gnssAcquireWakelockCb() override;
+    android::binder::Status gnssReleaseWakelockCb() override;
+    android::binder::Status gnssSetSystemInfoCb(const GnssSystemInfo& info) override;
+    android::binder::Status gnssRequestTimeCb() override;
+    android::binder::Status gnssRequestLocationCb(const bool independentFromGnss,
+                                                  const bool isUserEmergency) override;
 
     int last_capabilities_;
+    android::hardware::gnss::IGnssCallback::GnssSystemInfo last_info_;
+    android::hardware::gnss::GnssLocation last_location_;
+
     android::hardware::gnss::common::GnssCallbackEventQueue<int> capabilities_cbq_;
+    android::hardware::gnss::common::GnssCallbackEventQueue<
+            android::hardware::gnss::IGnssCallback::GnssSystemInfo>
+            info_cbq_;
+    android::hardware::gnss::common::GnssCallbackEventQueue<android::hardware::gnss::GnssLocation>
+            location_cbq_;
+    android::hardware::gnss::common::GnssCallbackEventQueue<
+            std::vector<android::hardware::gnss::IGnssCallback::GnssSvInfo>>
+            sv_info_list_cbq_;
 };
\ No newline at end of file
diff --git a/gnss/aidl/vts/GnssVisibilityControlCallback.cpp b/gnss/aidl/vts/GnssVisibilityControlCallback.cpp
new file mode 100644
index 0000000..aa27af1
--- /dev/null
+++ b/gnss/aidl/vts/GnssVisibilityControlCallback.cpp
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "GnssVisibilityControlCallback.h"
+#include <log/log.h>
+
+android::binder::Status GnssVisibilityControlCallback::nfwNotifyCb(const NfwNotification&) {
+    // To implement
+    return android::binder::Status::ok();
+}
+
+android::binder::Status GnssVisibilityControlCallback::isInEmergencySession(bool*) {
+    // To implement
+    return android::binder::Status::ok();
+}
diff --git a/gnss/aidl/vts/GnssVisibilityControlCallback.h b/gnss/aidl/vts/GnssVisibilityControlCallback.h
new file mode 100644
index 0000000..fbacde7
--- /dev/null
+++ b/gnss/aidl/vts/GnssVisibilityControlCallback.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android/hardware/gnss/visibility_control/BnGnssVisibilityControlCallback.h>
+
+class GnssVisibilityControlCallback
+    : public android::hardware::gnss::visibility_control::BnGnssVisibilityControlCallback {
+  public:
+    GnssVisibilityControlCallback(){};
+    ~GnssVisibilityControlCallback(){};
+    android::binder::Status nfwNotifyCb(
+            const android::hardware::gnss::visibility_control::IGnssVisibilityControlCallback::
+                    NfwNotification& notification) override;
+    android::binder::Status isInEmergencySession(bool* _aidl_return) override;
+};
diff --git a/gnss/aidl/vts/MeasurementCorrectionsCallback.cpp b/gnss/aidl/vts/MeasurementCorrectionsCallback.cpp
new file mode 100644
index 0000000..db1f7a6
--- /dev/null
+++ b/gnss/aidl/vts/MeasurementCorrectionsCallback.cpp
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "MeasurementCorrectionsCallback"
+
+#include "MeasurementCorrectionsCallback.h"
+#include <log/log.h>
+
+android::binder::Status MeasurementCorrectionsCallback::setCapabilitiesCb(const int capabilities) {
+    ALOGI("Capabilities received %d", capabilities);
+    capabilities_cbq_.store(capabilities);
+    return android::binder::Status::ok();
+}
diff --git a/gnss/aidl/vts/MeasurementCorrectionsCallback.h b/gnss/aidl/vts/MeasurementCorrectionsCallback.h
new file mode 100644
index 0000000..27e5b3c
--- /dev/null
+++ b/gnss/aidl/vts/MeasurementCorrectionsCallback.h
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android/hardware/gnss/measurement_corrections/BnMeasurementCorrectionsCallback.h>
+#include "GnssCallbackEventQueue.h"
+
+class MeasurementCorrectionsCallback
+    : public android::hardware::gnss::measurement_corrections::BnMeasurementCorrectionsCallback {
+  public:
+    MeasurementCorrectionsCallback() : capabilities_cbq_("capabilities"){};
+    ~MeasurementCorrectionsCallback(){};
+    android::binder::Status setCapabilitiesCb(const int capabilities) override;
+
+    android::hardware::gnss::common::GnssCallbackEventQueue<int> capabilities_cbq_;
+    int last_capabilities_;
+};
diff --git a/gnss/aidl/vts/gnss_hal_test.cpp b/gnss/aidl/vts/gnss_hal_test.cpp
index 2447bf8..13c32ee 100644
--- a/gnss/aidl/vts/gnss_hal_test.cpp
+++ b/gnss/aidl/vts/gnss_hal_test.cpp
@@ -14,20 +14,31 @@
  * limitations under the License.
  */
 
+#define LOG_TAG "GnssHalTest"
+
 #include "gnss_hal_test.h"
 #include <hidl/ServiceManagement.h>
+#include "Utils.h"
 
-using GnssConstellationTypeAidl = android::hardware::gnss::GnssConstellationType;
+using android::hardware::gnss::GnssConstellationType;
+using android::hardware::gnss::GnssLocation;
+using android::hardware::gnss::IGnss;
+using android::hardware::gnss::IGnssCallback;
+using android::hardware::gnss::common::Utils;
+using GnssConstellationTypeV2_0 = android::hardware::gnss::V2_0::GnssConstellationType;
 
 void GnssHalTest::SetUp() {
     // Get AIDL handle
     aidl_gnss_hal_ = android::waitForDeclaredService<IGnssAidl>(String16(GetParam().c_str()));
     ASSERT_NE(aidl_gnss_hal_, nullptr);
+    ALOGD("AIDL Interface Version = %d", aidl_gnss_hal_->getInterfaceVersion());
 
-    const auto& hidlInstanceNames = android::hardware::getAllHalInstanceNames(
-            android::hardware::gnss::V2_1::IGnss::descriptor);
-    gnss_hal_ = IGnss_V2_1::getService(hidlInstanceNames[0]);
-    ASSERT_NE(gnss_hal_, nullptr);
+    if (aidl_gnss_hal_->getInterfaceVersion() == 1) {
+        const auto& hidlInstanceNames = android::hardware::getAllHalInstanceNames(
+                android::hardware::gnss::V2_1::IGnss::descriptor);
+        gnss_hal_ = IGnss_V2_1::getService(hidlInstanceNames[0]);
+        ASSERT_NE(gnss_hal_, nullptr);
+    }
 
     SetUpGnssCallback();
 }
@@ -40,7 +51,6 @@
     if (!status.isOk()) {
         ALOGE("Failed to setCallback");
     }
-
     ASSERT_TRUE(status.isOk());
 
     /*
@@ -48,9 +58,243 @@
      */
     EXPECT_TRUE(aidl_gnss_cb_->capabilities_cbq_.retrieve(aidl_gnss_cb_->last_capabilities_,
                                                           TIMEOUT_SEC));
-
     EXPECT_EQ(aidl_gnss_cb_->capabilities_cbq_.calledCount(), 1);
 
-    // Invoke the super method.
-    GnssHalTestTemplate<IGnss_V2_1>::SetUpGnssCallback();
+    if (aidl_gnss_hal_->getInterfaceVersion() == 1) {
+        // Invoke the super method.
+        GnssHalTestTemplate<IGnss_V2_1>::SetUpGnssCallback();
+    }
+}
+
+void GnssHalTest::CheckLocation(const GnssLocation& location, bool check_speed) {
+    Utils::checkLocation(location, check_speed, /* check_more_accuracies= */ true);
+}
+
+void GnssHalTest::SetPositionMode(const int min_interval_msec, const bool low_power_mode) {
+    if (aidl_gnss_hal_->getInterfaceVersion() == 1) {
+        // Invoke the super method.
+        return GnssHalTestTemplate<IGnss_V2_1>::SetPositionMode(min_interval_msec, low_power_mode);
+    }
+
+    const int kPreferredAccuracy = 0;  // Ideally perfect (matches GnssLocationProvider)
+    const int kPreferredTimeMsec = 0;  // Ideally immediate
+
+    auto status = aidl_gnss_hal_->setPositionMode(
+            IGnss::GnssPositionMode::MS_BASED, IGnss::GnssPositionRecurrence::RECURRENCE_PERIODIC,
+            min_interval_msec, kPreferredAccuracy, kPreferredTimeMsec, low_power_mode);
+
+    ASSERT_TRUE(status.isOk());
+}
+
+bool GnssHalTest::StartAndCheckFirstLocation(const int min_interval_msec,
+                                             const bool low_power_mode) {
+    if (aidl_gnss_hal_->getInterfaceVersion() == 1) {
+        // Invoke the super method.
+        return GnssHalTestTemplate<IGnss_V2_1>::StartAndCheckFirstLocation(min_interval_msec,
+                                                                           low_power_mode);
+    }
+
+    SetPositionMode(min_interval_msec, low_power_mode);
+    auto result = aidl_gnss_hal_->start();
+
+    EXPECT_TRUE(result.isOk());
+
+    /*
+     * GnssLocationProvider support of AGPS SUPL & XtraDownloader is not available in VTS,
+     * so allow time to demodulate ephemeris over the air.
+     */
+    const int kFirstGnssLocationTimeoutSeconds = 75;
+
+    EXPECT_TRUE(aidl_gnss_cb_->location_cbq_.retrieve(aidl_gnss_cb_->last_location_,
+                                                      kFirstGnssLocationTimeoutSeconds));
+    int locationCalledCount = aidl_gnss_cb_->location_cbq_.calledCount();
+    EXPECT_EQ(locationCalledCount, 1);
+
+    if (locationCalledCount > 0) {
+        // don't require speed on first fix
+        CheckLocation(aidl_gnss_cb_->last_location_, false);
+        return true;
+    }
+    return false;
+}
+
+void GnssHalTest::StopAndClearLocations() {
+    ALOGD("StopAndClearLocations");
+    if (aidl_gnss_hal_->getInterfaceVersion() == 1) {
+        // Invoke the super method.
+        return GnssHalTestTemplate<IGnss_V2_1>::StopAndClearLocations();
+    }
+
+    auto status = aidl_gnss_hal_->stop();
+    EXPECT_TRUE(status.isOk());
+
+    /*
+     * Clear notify/waiting counter, allowing up till the timeout after
+     * the last reply for final startup messages to arrive (esp. system
+     * info.)
+     */
+    while (aidl_gnss_cb_->location_cbq_.retrieve(aidl_gnss_cb_->last_location_, TIMEOUT_SEC)) {
+    }
+    aidl_gnss_cb_->location_cbq_.reset();
+}
+
+void GnssHalTest::StartAndCheckLocations(int count) {
+    if (aidl_gnss_hal_->getInterfaceVersion() == 1) {
+        // Invoke the super method.
+        return GnssHalTestTemplate<IGnss_V2_1>::StartAndCheckLocations(count);
+    }
+    const int kMinIntervalMsec = 500;
+    const int kLocationTimeoutSubsequentSec = 2;
+    const bool kLowPowerMode = false;
+
+    EXPECT_TRUE(StartAndCheckFirstLocation(kMinIntervalMsec, kLowPowerMode));
+
+    for (int i = 1; i < count; i++) {
+        EXPECT_TRUE(aidl_gnss_cb_->location_cbq_.retrieve(aidl_gnss_cb_->last_location_,
+                                                          kLocationTimeoutSubsequentSec));
+        int locationCalledCount = aidl_gnss_cb_->location_cbq_.calledCount();
+        EXPECT_EQ(locationCalledCount, i + 1);
+        // Don't cause confusion by checking details if no location yet
+        if (locationCalledCount > 0) {
+            // Should be more than 1 location by now, but if not, still don't check first fix speed
+            CheckLocation(aidl_gnss_cb_->last_location_, locationCalledCount > 1);
+        }
+    }
+}
+
+std::list<std::vector<IGnssCallback::GnssSvInfo>> GnssHalTest::convertToAidl(
+        const std::list<hidl_vec<IGnssCallback_2_1::GnssSvInfo>>& sv_info_list) {
+    std::list<std::vector<IGnssCallback::GnssSvInfo>> aidl_sv_info_list;
+    for (const auto& sv_info_vec : sv_info_list) {
+        std::vector<IGnssCallback::GnssSvInfo> aidl_sv_info_vec;
+        for (const auto& sv_info : sv_info_vec) {
+            IGnssCallback::GnssSvInfo aidl_sv_info;
+            aidl_sv_info.svid = sv_info.v2_0.v1_0.svid;
+            aidl_sv_info.constellation =
+                    static_cast<GnssConstellationType>(sv_info.v2_0.constellation);
+            aidl_sv_info.cN0Dbhz = sv_info.v2_0.v1_0.cN0Dbhz;
+            aidl_sv_info.basebandCN0DbHz = sv_info.basebandCN0DbHz;
+            aidl_sv_info.elevationDegrees = sv_info.v2_0.v1_0.elevationDegrees;
+            aidl_sv_info.azimuthDegrees = sv_info.v2_0.v1_0.azimuthDegrees;
+            aidl_sv_info.carrierFrequencyHz = (int64_t)sv_info.v2_0.v1_0.carrierFrequencyHz;
+            aidl_sv_info.svFlag = (int)sv_info.v2_0.v1_0.svFlag;
+            aidl_sv_info_vec.push_back(aidl_sv_info);
+        }
+        aidl_sv_info_list.push_back(aidl_sv_info_vec);
+    }
+    return aidl_sv_info_list;
+}
+
+/*
+ * FindStrongFrequentNonGpsSource:
+ *
+ * Search through a GnssSvStatus list for the strongest non-GPS satellite observed enough times
+ *
+ * returns the strongest source,
+ *         or a source with constellation == UNKNOWN if none are found sufficient times
+ */
+BlocklistedSource GnssHalTest::FindStrongFrequentNonGpsSource(
+        const std::list<hidl_vec<IGnssCallback_2_1::GnssSvInfo>> sv_info_list,
+        const int min_observations) {
+    return FindStrongFrequentNonGpsSource(convertToAidl(sv_info_list), min_observations);
+}
+
+BlocklistedSource GnssHalTest::FindStrongFrequentNonGpsSource(
+        const std::list<std::vector<IGnssCallback::GnssSvInfo>> sv_info_list,
+        const int min_observations) {
+    std::map<ComparableBlocklistedSource, SignalCounts> mapSignals;
+
+    for (const auto& sv_info_vec : sv_info_list) {
+        for (uint32_t iSv = 0; iSv < sv_info_vec.size(); iSv++) {
+            const auto& gnss_sv = sv_info_vec[iSv];
+            if ((gnss_sv.svFlag & (int)IGnssCallback::GnssSvFlags::USED_IN_FIX) &&
+                (gnss_sv.constellation != GnssConstellationType::GPS)) {
+                ComparableBlocklistedSource source;
+                source.id.svid = gnss_sv.svid;
+                source.id.constellation = gnss_sv.constellation;
+
+                const auto& itSignal = mapSignals.find(source);
+                if (itSignal == mapSignals.end()) {
+                    SignalCounts counts;
+                    counts.observations = 1;
+                    counts.max_cn0_dbhz = gnss_sv.cN0Dbhz;
+                    mapSignals.insert(
+                            std::pair<ComparableBlocklistedSource, SignalCounts>(source, counts));
+                } else {
+                    itSignal->second.observations++;
+                    if (itSignal->second.max_cn0_dbhz < gnss_sv.cN0Dbhz) {
+                        itSignal->second.max_cn0_dbhz = gnss_sv.cN0Dbhz;
+                    }
+                }
+            }
+        }
+    }
+
+    float max_cn0_dbhz_with_sufficient_count = 0.;
+    int total_observation_count = 0;
+    int blocklisted_source_count_observation = 0;
+
+    ComparableBlocklistedSource source_to_blocklist;  // initializes to zero = UNKNOWN constellation
+    for (auto const& pairSignal : mapSignals) {
+        total_observation_count += pairSignal.second.observations;
+        if ((pairSignal.second.observations >= min_observations) &&
+            (pairSignal.second.max_cn0_dbhz > max_cn0_dbhz_with_sufficient_count)) {
+            source_to_blocklist = pairSignal.first;
+            blocklisted_source_count_observation = pairSignal.second.observations;
+            max_cn0_dbhz_with_sufficient_count = pairSignal.second.max_cn0_dbhz;
+        }
+    }
+    ALOGD("Among %d observations, chose svid %d, constellation %d, "
+          "with %d observations at %.1f max CNo",
+          total_observation_count, source_to_blocklist.id.svid,
+          (int)source_to_blocklist.id.constellation, blocklisted_source_count_observation,
+          max_cn0_dbhz_with_sufficient_count);
+
+    return source_to_blocklist.id;
+}
+
+GnssConstellationType GnssHalTest::startLocationAndGetNonGpsConstellation(
+        const int locations_to_await, const int gnss_sv_info_list_timeout) {
+    if (aidl_gnss_hal_->getInterfaceVersion() == 1) {
+        return static_cast<GnssConstellationType>(
+                GnssHalTestTemplate<IGnss_V2_1>::startLocationAndGetNonGpsConstellation(
+                        locations_to_await, gnss_sv_info_list_timeout));
+    }
+    aidl_gnss_cb_->location_cbq_.reset();
+    StartAndCheckLocations(locations_to_await);
+    const int location_called_count = aidl_gnss_cb_->location_cbq_.calledCount();
+
+    // Tolerate 1 less sv status to handle edge cases in reporting.
+    int sv_info_list_cbq_size = aidl_gnss_cb_->sv_info_list_cbq_.size();
+    EXPECT_GE(sv_info_list_cbq_size + 1, locations_to_await);
+    ALOGD("Observed %d GnssSvInfo, while awaiting %d Locations (%d received)",
+          sv_info_list_cbq_size, locations_to_await, location_called_count);
+
+    // Find first non-GPS constellation to blocklist
+    GnssConstellationType constellation_to_blocklist = GnssConstellationType::UNKNOWN;
+    for (int i = 0; i < sv_info_list_cbq_size; ++i) {
+        std::vector<IGnssCallback::GnssSvInfo> sv_info_vec;
+        aidl_gnss_cb_->sv_info_list_cbq_.retrieve(sv_info_vec, gnss_sv_info_list_timeout);
+        for (uint32_t iSv = 0; iSv < sv_info_vec.size(); iSv++) {
+            auto& gnss_sv = sv_info_vec[iSv];
+            if ((gnss_sv.svFlag & (uint32_t)IGnssCallback::GnssSvFlags::USED_IN_FIX) &&
+                (gnss_sv.constellation != GnssConstellationType::UNKNOWN) &&
+                (gnss_sv.constellation != GnssConstellationType::GPS)) {
+                // found a non-GPS constellation
+                constellation_to_blocklist = gnss_sv.constellation;
+                break;
+            }
+        }
+        if (constellation_to_blocklist != GnssConstellationType::UNKNOWN) {
+            break;
+        }
+    }
+
+    if (constellation_to_blocklist == GnssConstellationType::UNKNOWN) {
+        ALOGI("No non-GPS constellations found, constellation blocklist test less effective.");
+        // Proceed functionally to blocklist something.
+        constellation_to_blocklist = GnssConstellationType::GLONASS;
+    }
+
+    return constellation_to_blocklist;
 }
diff --git a/gnss/aidl/vts/gnss_hal_test.h b/gnss/aidl/vts/gnss_hal_test.h
index e3ecbed..d479af3 100644
--- a/gnss/aidl/vts/gnss_hal_test.h
+++ b/gnss/aidl/vts/gnss_hal_test.h
@@ -41,9 +41,50 @@
   public:
     GnssHalTest(){};
     ~GnssHalTest(){};
+
+    struct ComparableBlocklistedSource {
+        android::hardware::gnss::BlocklistedSource id;
+
+        ComparableBlocklistedSource() {
+            id.constellation = android::hardware::gnss::GnssConstellationType::UNKNOWN;
+            id.svid = 0;
+        }
+
+        bool operator<(const ComparableBlocklistedSource& compare) const {
+            return ((id.svid < compare.id.svid) || ((id.svid == compare.id.svid) &&
+                                                    (id.constellation < compare.id.constellation)));
+        }
+    };
+
+    struct SignalCounts {
+        int observations;
+        float max_cn0_dbhz;
+    };
+
     virtual void SetUp() override;
     virtual void SetUpGnssCallback() override;
 
+    void CheckLocation(const android::hardware::gnss::GnssLocation& location,
+                       const bool check_speed);
+    void SetPositionMode(const int min_interval_msec, const bool low_power_mode);
+    bool StartAndCheckFirstLocation(const int min_interval_msec, const bool low_power_mode);
+    void StopAndClearLocations();
+    void StartAndCheckLocations(int count);
+
+    android::hardware::gnss::GnssConstellationType startLocationAndGetNonGpsConstellation(
+            const int locations_to_await, const int gnss_sv_info_list_timeout);
+    std::list<std::vector<android::hardware::gnss::IGnssCallback::GnssSvInfo>> convertToAidl(
+            const std::list<hidl_vec<android::hardware::gnss::V2_1::IGnssCallback::GnssSvInfo>>&
+                    sv_info_list);
+    android::hardware::gnss::BlocklistedSource FindStrongFrequentNonGpsSource(
+            const std::list<hidl_vec<android::hardware::gnss::V2_1::IGnssCallback::GnssSvInfo>>
+                    sv_info_list,
+            const int min_observations);
+    android::hardware::gnss::BlocklistedSource FindStrongFrequentNonGpsSource(
+            const std::list<std::vector<android::hardware::gnss::IGnssCallback::GnssSvInfo>>
+                    sv_info_list,
+            const int min_observations);
+
     sp<IGnssAidl> aidl_gnss_hal_;
     sp<GnssCallbackAidl> aidl_gnss_cb_;  // Primary callback interface
 };
diff --git a/gnss/aidl/vts/gnss_hal_test_cases.cpp b/gnss/aidl/vts/gnss_hal_test_cases.cpp
index 36be631..1fa6825 100644
--- a/gnss/aidl/vts/gnss_hal_test_cases.cpp
+++ b/gnss/aidl/vts/gnss_hal_test_cases.cpp
@@ -18,19 +18,27 @@
 
 #include <android/hardware/gnss/IAGnss.h>
 #include <android/hardware/gnss/IGnss.h>
+#include <android/hardware/gnss/IGnssAntennaInfo.h>
 #include <android/hardware/gnss/IGnssBatching.h>
 #include <android/hardware/gnss/IGnssDebug.h>
 #include <android/hardware/gnss/IGnssMeasurementCallback.h>
 #include <android/hardware/gnss/IGnssMeasurementInterface.h>
 #include <android/hardware/gnss/IGnssPowerIndication.h>
 #include <android/hardware/gnss/IGnssPsds.h>
+#include <android/hardware/gnss/measurement_corrections/IMeasurementCorrectionsInterface.h>
+#include <android/hardware/gnss/visibility_control/IGnssVisibilityControl.h>
 #include <cutils/properties.h>
 #include "AGnssCallbackAidl.h"
+#include "AGnssRilCallbackAidl.h"
+#include "GnssAntennaInfoCallbackAidl.h"
 #include "GnssBatchingCallback.h"
 #include "GnssGeofenceCallback.h"
 #include "GnssMeasurementCallbackAidl.h"
 #include "GnssNavigationMessageCallback.h"
 #include "GnssPowerIndicationCallback.h"
+#include "GnssVisibilityControlCallback.h"
+#include "MeasurementCorrectionsCallback.h"
+#include "Utils.h"
 #include "gnss_hal_test.h"
 
 using android::sp;
@@ -41,9 +49,13 @@
 using android::hardware::gnss::GnssMeasurement;
 using android::hardware::gnss::GnssPowerStats;
 using android::hardware::gnss::IAGnss;
+using android::hardware::gnss::IAGnssRil;
 using android::hardware::gnss::IGnss;
+using android::hardware::gnss::IGnssAntennaInfo;
+using android::hardware::gnss::IGnssAntennaInfoCallback;
 using android::hardware::gnss::IGnssBatching;
 using android::hardware::gnss::IGnssBatchingCallback;
+using android::hardware::gnss::IGnssCallback;
 using android::hardware::gnss::IGnssConfiguration;
 using android::hardware::gnss::IGnssDebug;
 using android::hardware::gnss::IGnssGeofence;
@@ -55,7 +67,11 @@
 using android::hardware::gnss::IGnssPsds;
 using android::hardware::gnss::PsdsType;
 using android::hardware::gnss::SatellitePvt;
+using android::hardware::gnss::common::Utils;
+using android::hardware::gnss::measurement_corrections::IMeasurementCorrectionsInterface;
+using android::hardware::gnss::visibility_control::IGnssVisibilityControl;
 
+using GnssConstellationTypeV2_0 = android::hardware::gnss::V2_0::GnssConstellationType;
 using GnssConstellationTypeAidl = android::hardware::gnss::GnssConstellationType;
 
 static bool IsAutomotiveDevice() {
@@ -321,7 +337,11 @@
     auto powerStats1 = gnssPowerIndicationCallback->last_gnss_power_stats_;
 
     // Get a location and request another GnssPowerStats
-    gnss_cb_->location_cbq_.reset();
+    if (aidl_gnss_hal_->getInterfaceVersion() == 1) {
+        gnss_cb_->location_cbq_.reset();
+    } else {
+        aidl_gnss_cb_->location_cbq_.reset();
+    }
     StartAndCheckFirstLocation(/* min_interval_msec= */ 1000, /* low_power_mode= */ false);
 
     // Request and verify the 2nd GnssPowerStats has larger values than the 1st one
@@ -372,88 +392,6 @@
 }
 
 /*
- * FindStrongFrequentNonGpsSource:
- *
- * Search through a GnssSvStatus list for the strongest non-GPS satellite observed enough times
- *
- * returns the strongest source,
- *         or a source with constellation == UNKNOWN if none are found sufficient times
- */
-BlocklistedSource FindStrongFrequentNonGpsSource(
-        const std::list<hidl_vec<IGnssCallback_2_1::GnssSvInfo>> sv_info_list,
-        const int min_observations) {
-    struct ComparableBlocklistedSource {
-        BlocklistedSource id;
-
-        ComparableBlocklistedSource() {
-            id.constellation = GnssConstellationTypeAidl::UNKNOWN;
-            id.svid = 0;
-        }
-
-        bool operator<(const ComparableBlocklistedSource& compare) const {
-            return ((id.svid < compare.id.svid) || ((id.svid == compare.id.svid) &&
-                                                    (id.constellation < compare.id.constellation)));
-        }
-    };
-
-    struct SignalCounts {
-        int observations;
-        float max_cn0_dbhz;
-    };
-
-    std::map<ComparableBlocklistedSource, SignalCounts> mapSignals;
-
-    for (const auto& sv_info_vec : sv_info_list) {
-        for (uint32_t iSv = 0; iSv < sv_info_vec.size(); iSv++) {
-            const auto& gnss_sv = sv_info_vec[iSv];
-            if ((gnss_sv.v2_0.v1_0.svFlag & IGnssCallback_1_0::GnssSvFlags::USED_IN_FIX) &&
-                (gnss_sv.v2_0.constellation != GnssConstellationType::GPS)) {
-                ComparableBlocklistedSource source;
-                source.id.svid = gnss_sv.v2_0.v1_0.svid;
-                source.id.constellation =
-                        static_cast<GnssConstellationTypeAidl>(gnss_sv.v2_0.constellation);
-
-                const auto& itSignal = mapSignals.find(source);
-                if (itSignal == mapSignals.end()) {
-                    SignalCounts counts;
-                    counts.observations = 1;
-                    counts.max_cn0_dbhz = gnss_sv.v2_0.v1_0.cN0Dbhz;
-                    mapSignals.insert(
-                            std::pair<ComparableBlocklistedSource, SignalCounts>(source, counts));
-                } else {
-                    itSignal->second.observations++;
-                    if (itSignal->second.max_cn0_dbhz < gnss_sv.v2_0.v1_0.cN0Dbhz) {
-                        itSignal->second.max_cn0_dbhz = gnss_sv.v2_0.v1_0.cN0Dbhz;
-                    }
-                }
-            }
-        }
-    }
-
-    float max_cn0_dbhz_with_sufficient_count = 0.;
-    int total_observation_count = 0;
-    int blocklisted_source_count_observation = 0;
-
-    ComparableBlocklistedSource source_to_blocklist;  // initializes to zero = UNKNOWN constellation
-    for (auto const& pairSignal : mapSignals) {
-        total_observation_count += pairSignal.second.observations;
-        if ((pairSignal.second.observations >= min_observations) &&
-            (pairSignal.second.max_cn0_dbhz > max_cn0_dbhz_with_sufficient_count)) {
-            source_to_blocklist = pairSignal.first;
-            blocklisted_source_count_observation = pairSignal.second.observations;
-            max_cn0_dbhz_with_sufficient_count = pairSignal.second.max_cn0_dbhz;
-        }
-    }
-    ALOGD("Among %d observations, chose svid %d, constellation %d, "
-          "with %d observations at %.1f max CNo",
-          total_observation_count, source_to_blocklist.id.svid,
-          (int)source_to_blocklist.id.constellation, blocklisted_source_count_observation,
-          max_cn0_dbhz_with_sufficient_count);
-
-    return source_to_blocklist.id;
-}
-
-/*
  * BlocklistIndividualSatellites:
  *
  * 1) Turns on location, waits for 3 locations, ensuring they are valid, and checks corresponding
@@ -478,12 +416,20 @@
     const int kLocationsToAwait = 3;
     const int kRetriesToUnBlocklist = 10;
 
-    gnss_cb_->location_cbq_.reset();
+    if (aidl_gnss_hal_->getInterfaceVersion() == 1) {
+        gnss_cb_->location_cbq_.reset();
+    } else {
+        aidl_gnss_cb_->location_cbq_.reset();
+    }
     StartAndCheckLocations(kLocationsToAwait);
-    int location_called_count = gnss_cb_->location_cbq_.calledCount();
+    int location_called_count = (aidl_gnss_hal_->getInterfaceVersion() == 1)
+                                        ? gnss_cb_->location_cbq_.calledCount()
+                                        : aidl_gnss_cb_->location_cbq_.calledCount();
 
     // Tolerate 1 less sv status to handle edge cases in reporting.
-    int sv_info_list_cbq_size = gnss_cb_->sv_info_list_cbq_.size();
+    int sv_info_list_cbq_size = (aidl_gnss_hal_->getInterfaceVersion() == 1)
+                                        ? gnss_cb_->sv_info_list_cbq_.size()
+                                        : aidl_gnss_cb_->sv_info_list_cbq_.size();
     EXPECT_GE(sv_info_list_cbq_size + 1, kLocationsToAwait);
     ALOGD("Observed %d GnssSvInfo, while awaiting %d Locations (%d received)",
           sv_info_list_cbq_size, kLocationsToAwait, location_called_count);
@@ -495,14 +441,22 @@
      */
 
     const int kGnssSvInfoListTimeout = 2;
-    std::list<hidl_vec<IGnssCallback_2_1::GnssSvInfo>> sv_info_vec_list;
-    int count = gnss_cb_->sv_info_list_cbq_.retrieve(sv_info_vec_list, sv_info_list_cbq_size,
-                                                     kGnssSvInfoListTimeout);
-
-    ASSERT_EQ(count, sv_info_list_cbq_size);
-
-    BlocklistedSource source_to_blocklist =
-            FindStrongFrequentNonGpsSource(sv_info_vec_list, kLocationsToAwait - 1);
+    BlocklistedSource source_to_blocklist;
+    if (aidl_gnss_hal_->getInterfaceVersion() == 1) {
+        std::list<hidl_vec<IGnssCallback_2_1::GnssSvInfo>> sv_info_vec_list;
+        int count = gnss_cb_->sv_info_list_cbq_.retrieve(sv_info_vec_list, sv_info_list_cbq_size,
+                                                         kGnssSvInfoListTimeout);
+        ASSERT_EQ(count, sv_info_list_cbq_size);
+        source_to_blocklist =
+                FindStrongFrequentNonGpsSource(sv_info_vec_list, kLocationsToAwait - 1);
+    } else {
+        std::list<std::vector<IGnssCallback::GnssSvInfo>> sv_info_vec_list;
+        int count = aidl_gnss_cb_->sv_info_list_cbq_.retrieve(
+                sv_info_vec_list, sv_info_list_cbq_size, kGnssSvInfoListTimeout);
+        ASSERT_EQ(count, sv_info_list_cbq_size);
+        source_to_blocklist =
+                FindStrongFrequentNonGpsSource(sv_info_vec_list, kLocationsToAwait - 1);
+    }
 
     if (source_to_blocklist.constellation == GnssConstellationTypeAidl::UNKNOWN) {
         // Cannot find a non-GPS satellite. Let the test pass.
@@ -526,32 +480,53 @@
     ASSERT_TRUE(status.isOk());
 
     // retry and ensure satellite not used
-    gnss_cb_->sv_info_list_cbq_.reset();
+    if (aidl_gnss_hal_->getInterfaceVersion() == 1) {
+        gnss_cb_->sv_info_list_cbq_.reset();
+        gnss_cb_->location_cbq_.reset();
+    } else {
+        aidl_gnss_cb_->sv_info_list_cbq_.reset();
+        aidl_gnss_cb_->location_cbq_.reset();
+    }
 
-    gnss_cb_->location_cbq_.reset();
     StartAndCheckLocations(kLocationsToAwait);
 
     // early exit if test is being run with insufficient signal
-    location_called_count = gnss_cb_->location_cbq_.calledCount();
+    location_called_count = (aidl_gnss_hal_->getInterfaceVersion() == 1)
+                                    ? gnss_cb_->location_cbq_.calledCount()
+                                    : aidl_gnss_cb_->location_cbq_.calledCount();
     if (location_called_count == 0) {
         ALOGE("0 Gnss locations received - ensure sufficient signal and retry");
     }
     ASSERT_TRUE(location_called_count > 0);
 
     // Tolerate 1 less sv status to handle edge cases in reporting.
-    sv_info_list_cbq_size = gnss_cb_->sv_info_list_cbq_.size();
+    sv_info_list_cbq_size = (aidl_gnss_hal_->getInterfaceVersion() == 1)
+                                    ? gnss_cb_->sv_info_list_cbq_.size()
+                                    : aidl_gnss_cb_->sv_info_list_cbq_.size();
     EXPECT_GE(sv_info_list_cbq_size + 1, kLocationsToAwait);
     ALOGD("Observed %d GnssSvInfo, while awaiting %d Locations (%d received)",
           sv_info_list_cbq_size, kLocationsToAwait, location_called_count);
     for (int i = 0; i < sv_info_list_cbq_size; ++i) {
-        hidl_vec<IGnssCallback_2_1::GnssSvInfo> sv_info_vec;
-        gnss_cb_->sv_info_list_cbq_.retrieve(sv_info_vec, kGnssSvInfoListTimeout);
-        for (uint32_t iSv = 0; iSv < sv_info_vec.size(); iSv++) {
-            const auto& gnss_sv = sv_info_vec[iSv];
-            EXPECT_FALSE((gnss_sv.v2_0.v1_0.svid == source_to_blocklist.svid) &&
-                         (static_cast<GnssConstellationTypeAidl>(gnss_sv.v2_0.constellation) ==
-                          source_to_blocklist.constellation) &&
-                         (gnss_sv.v2_0.v1_0.svFlag & IGnssCallback_1_0::GnssSvFlags::USED_IN_FIX));
+        if (aidl_gnss_hal_->getInterfaceVersion() == 1) {
+            hidl_vec<IGnssCallback_2_1::GnssSvInfo> sv_info_vec;
+            gnss_cb_->sv_info_list_cbq_.retrieve(sv_info_vec, kGnssSvInfoListTimeout);
+            for (uint32_t iSv = 0; iSv < sv_info_vec.size(); iSv++) {
+                auto& gnss_sv = sv_info_vec[iSv];
+                EXPECT_FALSE(
+                        (gnss_sv.v2_0.v1_0.svid == source_to_blocklist.svid) &&
+                        (static_cast<GnssConstellationTypeAidl>(gnss_sv.v2_0.constellation) ==
+                         source_to_blocklist.constellation) &&
+                        (gnss_sv.v2_0.v1_0.svFlag & IGnssCallback_1_0::GnssSvFlags::USED_IN_FIX));
+            }
+        } else {
+            std::vector<IGnssCallback::GnssSvInfo> sv_info_vec;
+            aidl_gnss_cb_->sv_info_list_cbq_.retrieve(sv_info_vec, kGnssSvInfoListTimeout);
+            for (uint32_t iSv = 0; iSv < sv_info_vec.size(); iSv++) {
+                auto& gnss_sv = sv_info_vec[iSv];
+                EXPECT_FALSE((gnss_sv.svid == source_to_blocklist.svid) &&
+                             (gnss_sv.constellation == source_to_blocklist.constellation) &&
+                             (gnss_sv.svFlag & (int)IGnssCallback::GnssSvFlags::USED_IN_FIX));
+            }
         }
     }
 
@@ -566,36 +541,59 @@
     int unblocklist_loops_remaining = kRetriesToUnBlocklist;
     while (!strongest_sv_is_reobserved && (unblocklist_loops_remaining-- > 0)) {
         StopAndClearLocations();
-        gnss_cb_->sv_info_list_cbq_.reset();
 
-        gnss_cb_->location_cbq_.reset();
+        if (aidl_gnss_hal_->getInterfaceVersion() == 1) {
+            gnss_cb_->sv_info_list_cbq_.reset();
+            gnss_cb_->location_cbq_.reset();
+        } else {
+            aidl_gnss_cb_->sv_info_list_cbq_.reset();
+            aidl_gnss_cb_->location_cbq_.reset();
+        }
         StartAndCheckLocations(kLocationsToAwait);
 
         // early exit loop if test is being run with insufficient signal
-        location_called_count = gnss_cb_->location_cbq_.calledCount();
+        location_called_count = (aidl_gnss_hal_->getInterfaceVersion() == 1)
+                                        ? gnss_cb_->location_cbq_.calledCount()
+                                        : aidl_gnss_cb_->location_cbq_.calledCount();
         if (location_called_count == 0) {
             ALOGE("0 Gnss locations received - ensure sufficient signal and retry");
         }
         ASSERT_TRUE(location_called_count > 0);
 
         // Tolerate 1 less sv status to handle edge cases in reporting.
-        sv_info_list_cbq_size = gnss_cb_->sv_info_list_cbq_.size();
+        sv_info_list_cbq_size = (aidl_gnss_hal_->getInterfaceVersion() == 1)
+                                        ? gnss_cb_->sv_info_list_cbq_.size()
+                                        : aidl_gnss_cb_->sv_info_list_cbq_.size();
         EXPECT_GE(sv_info_list_cbq_size + 1, kLocationsToAwait);
         ALOGD("Clear blocklist, observed %d GnssSvInfo, while awaiting %d Locations"
               ", tries remaining %d",
               sv_info_list_cbq_size, kLocationsToAwait, unblocklist_loops_remaining);
 
         for (int i = 0; i < sv_info_list_cbq_size; ++i) {
-            hidl_vec<IGnssCallback_2_1::GnssSvInfo> sv_info_vec;
-            gnss_cb_->sv_info_list_cbq_.retrieve(sv_info_vec, kGnssSvInfoListTimeout);
-            for (uint32_t iSv = 0; iSv < sv_info_vec.size(); iSv++) {
-                const auto& gnss_sv = sv_info_vec[iSv];
-                if ((gnss_sv.v2_0.v1_0.svid == source_to_blocklist.svid) &&
-                    (static_cast<GnssConstellationTypeAidl>(gnss_sv.v2_0.constellation) ==
-                     source_to_blocklist.constellation) &&
-                    (gnss_sv.v2_0.v1_0.svFlag & IGnssCallback_1_0::GnssSvFlags::USED_IN_FIX)) {
-                    strongest_sv_is_reobserved = true;
-                    break;
+            if (aidl_gnss_hal_->getInterfaceVersion() == 1) {
+                hidl_vec<IGnssCallback_2_1::GnssSvInfo> sv_info_vec;
+                gnss_cb_->sv_info_list_cbq_.retrieve(sv_info_vec, kGnssSvInfoListTimeout);
+                for (uint32_t iSv = 0; iSv < sv_info_vec.size(); iSv++) {
+                    auto& gnss_sv = sv_info_vec[iSv];
+                    if ((gnss_sv.v2_0.v1_0.svid == source_to_blocklist.svid) &&
+                        (static_cast<GnssConstellationTypeAidl>(gnss_sv.v2_0.constellation) ==
+                         source_to_blocklist.constellation) &&
+                        (gnss_sv.v2_0.v1_0.svFlag & IGnssCallback_1_0::GnssSvFlags::USED_IN_FIX)) {
+                        strongest_sv_is_reobserved = true;
+                        break;
+                    }
+                }
+            } else {
+                std::vector<IGnssCallback::GnssSvInfo> sv_info_vec;
+                aidl_gnss_cb_->sv_info_list_cbq_.retrieve(sv_info_vec, kGnssSvInfoListTimeout);
+                for (uint32_t iSv = 0; iSv < sv_info_vec.size(); iSv++) {
+                    auto& gnss_sv = sv_info_vec[iSv];
+                    if ((gnss_sv.svid == source_to_blocklist.svid) &&
+                        (gnss_sv.constellation == source_to_blocklist.constellation) &&
+                        (gnss_sv.svFlag & (int)IGnssCallback::GnssSvFlags::USED_IN_FIX)) {
+                        strongest_sv_is_reobserved = true;
+                        break;
+                    }
                 }
             }
             if (strongest_sv_is_reobserved) break;
@@ -657,27 +655,47 @@
     ASSERT_TRUE(status.isOk());
 
     // retry and ensure constellation not used
-    gnss_cb_->sv_info_list_cbq_.reset();
-
-    gnss_cb_->location_cbq_.reset();
+    if (aidl_gnss_hal_->getInterfaceVersion() == 1) {
+        gnss_cb_->sv_info_list_cbq_.reset();
+        gnss_cb_->location_cbq_.reset();
+    } else {
+        aidl_gnss_cb_->sv_info_list_cbq_.reset();
+        aidl_gnss_cb_->location_cbq_.reset();
+    }
     StartAndCheckLocations(kLocationsToAwait);
 
     // Tolerate 1 less sv status to handle edge cases in reporting.
-    int sv_info_list_cbq_size = gnss_cb_->sv_info_list_cbq_.size();
+    int sv_info_list_cbq_size = (aidl_gnss_hal_->getInterfaceVersion() == 1)
+                                        ? gnss_cb_->sv_info_list_cbq_.size()
+                                        : aidl_gnss_cb_->sv_info_list_cbq_.size();
     EXPECT_GE(sv_info_list_cbq_size + 1, kLocationsToAwait);
     ALOGD("Observed %d GnssSvInfo, while awaiting %d Locations", sv_info_list_cbq_size,
           kLocationsToAwait);
     for (int i = 0; i < sv_info_list_cbq_size; ++i) {
-        hidl_vec<IGnssCallback_2_1::GnssSvInfo> sv_info_vec;
-        gnss_cb_->sv_info_list_cbq_.retrieve(sv_info_vec, kGnssSvInfoListTimeout);
-        for (uint32_t iSv = 0; iSv < sv_info_vec.size(); iSv++) {
-            const auto& gnss_sv = sv_info_vec[iSv];
-            EXPECT_FALSE((static_cast<GnssConstellationTypeAidl>(gnss_sv.v2_0.constellation) ==
-                          source_to_blocklist_1.constellation) &&
-                         (gnss_sv.v2_0.v1_0.svFlag & IGnssCallback_1_0::GnssSvFlags::USED_IN_FIX));
-            EXPECT_FALSE((static_cast<GnssConstellationTypeAidl>(gnss_sv.v2_0.constellation) ==
-                          source_to_blocklist_2.constellation) &&
-                         (gnss_sv.v2_0.v1_0.svFlag & IGnssCallback_1_0::GnssSvFlags::USED_IN_FIX));
+        if (aidl_gnss_hal_->getInterfaceVersion() == 1) {
+            hidl_vec<IGnssCallback_2_1::GnssSvInfo> sv_info_vec;
+            gnss_cb_->sv_info_list_cbq_.retrieve(sv_info_vec, kGnssSvInfoListTimeout);
+            for (uint32_t iSv = 0; iSv < sv_info_vec.size(); iSv++) {
+                const auto& gnss_sv = sv_info_vec[iSv];
+                EXPECT_FALSE(
+                        (static_cast<GnssConstellationTypeAidl>(gnss_sv.v2_0.constellation) ==
+                         source_to_blocklist_1.constellation) &&
+                        (gnss_sv.v2_0.v1_0.svFlag & IGnssCallback_1_0::GnssSvFlags::USED_IN_FIX));
+                EXPECT_FALSE(
+                        (static_cast<GnssConstellationTypeAidl>(gnss_sv.v2_0.constellation) ==
+                         source_to_blocklist_2.constellation) &&
+                        (gnss_sv.v2_0.v1_0.svFlag & IGnssCallback_1_0::GnssSvFlags::USED_IN_FIX));
+            }
+        } else {
+            std::vector<IGnssCallback::GnssSvInfo> sv_info_vec;
+            aidl_gnss_cb_->sv_info_list_cbq_.retrieve(sv_info_vec, kGnssSvInfoListTimeout);
+            for (uint32_t iSv = 0; iSv < sv_info_vec.size(); iSv++) {
+                const auto& gnss_sv = sv_info_vec[iSv];
+                EXPECT_FALSE((gnss_sv.constellation == source_to_blocklist_1.constellation) &&
+                             (gnss_sv.svFlag & (int)IGnssCallback::GnssSvFlags::USED_IN_FIX));
+                EXPECT_FALSE((gnss_sv.constellation == source_to_blocklist_2.constellation) &&
+                             (gnss_sv.svFlag & (int)IGnssCallback::GnssSvFlags::USED_IN_FIX));
+            }
         }
     }
 
@@ -740,27 +758,47 @@
     StopAndClearLocations();
 
     // retry and ensure constellation not used
-    gnss_cb_->sv_info_list_cbq_.reset();
-
-    gnss_cb_->location_cbq_.reset();
+    if (aidl_gnss_hal_->getInterfaceVersion() == 1) {
+        gnss_cb_->sv_info_list_cbq_.reset();
+        gnss_cb_->location_cbq_.reset();
+    } else {
+        aidl_gnss_cb_->sv_info_list_cbq_.reset();
+        aidl_gnss_cb_->location_cbq_.reset();
+    }
     StartAndCheckLocations(kLocationsToAwait);
 
     // Tolerate 1 less sv status to handle edge cases in reporting.
-    int sv_info_list_cbq_size = gnss_cb_->sv_info_list_cbq_.size();
+    int sv_info_list_cbq_size = (aidl_gnss_hal_->getInterfaceVersion() == 1)
+                                        ? gnss_cb_->sv_info_list_cbq_.size()
+                                        : aidl_gnss_cb_->sv_info_list_cbq_.size();
     EXPECT_GE(sv_info_list_cbq_size + 1, kLocationsToAwait);
     ALOGD("Observed %d GnssSvInfo, while awaiting %d Locations", sv_info_list_cbq_size,
           kLocationsToAwait);
     for (int i = 0; i < sv_info_list_cbq_size; ++i) {
-        hidl_vec<IGnssCallback_2_1::GnssSvInfo> sv_info_vec;
-        gnss_cb_->sv_info_list_cbq_.retrieve(sv_info_vec, kGnssSvInfoListTimeout);
-        for (uint32_t iSv = 0; iSv < sv_info_vec.size(); iSv++) {
-            const auto& gnss_sv = sv_info_vec[iSv];
-            EXPECT_FALSE((static_cast<GnssConstellationTypeAidl>(gnss_sv.v2_0.constellation) ==
-                          source_to_blocklist_1.constellation) &&
-                         (gnss_sv.v2_0.v1_0.svFlag & IGnssCallback_1_0::GnssSvFlags::USED_IN_FIX));
-            EXPECT_FALSE((static_cast<GnssConstellationTypeAidl>(gnss_sv.v2_0.constellation) ==
-                          source_to_blocklist_2.constellation) &&
-                         (gnss_sv.v2_0.v1_0.svFlag & IGnssCallback_1_0::GnssSvFlags::USED_IN_FIX));
+        if (aidl_gnss_hal_->getInterfaceVersion() == 1) {
+            hidl_vec<IGnssCallback_2_1::GnssSvInfo> sv_info_vec;
+            gnss_cb_->sv_info_list_cbq_.retrieve(sv_info_vec, kGnssSvInfoListTimeout);
+            for (uint32_t iSv = 0; iSv < sv_info_vec.size(); iSv++) {
+                const auto& gnss_sv = sv_info_vec[iSv];
+                EXPECT_FALSE(
+                        (static_cast<GnssConstellationTypeAidl>(gnss_sv.v2_0.constellation) ==
+                         source_to_blocklist_1.constellation) &&
+                        (gnss_sv.v2_0.v1_0.svFlag & IGnssCallback_1_0::GnssSvFlags::USED_IN_FIX));
+                EXPECT_FALSE(
+                        (static_cast<GnssConstellationTypeAidl>(gnss_sv.v2_0.constellation) ==
+                         source_to_blocklist_2.constellation) &&
+                        (gnss_sv.v2_0.v1_0.svFlag & IGnssCallback_1_0::GnssSvFlags::USED_IN_FIX));
+            }
+        } else {
+            std::vector<IGnssCallback::GnssSvInfo> sv_info_vec;
+            aidl_gnss_cb_->sv_info_list_cbq_.retrieve(sv_info_vec, kGnssSvInfoListTimeout);
+            for (uint32_t iSv = 0; iSv < sv_info_vec.size(); iSv++) {
+                const auto& gnss_sv = sv_info_vec[iSv];
+                EXPECT_FALSE((gnss_sv.constellation == source_to_blocklist_1.constellation) &&
+                             (gnss_sv.svFlag & (int)IGnssCallback::GnssSvFlags::USED_IN_FIX));
+                EXPECT_FALSE((gnss_sv.constellation == source_to_blocklist_2.constellation) &&
+                             (gnss_sv.svFlag & (int)IGnssCallback::GnssSvFlags::USED_IN_FIX));
+            }
         }
     }
 
@@ -775,6 +813,10 @@
  * TestAllExtensions.
  */
 TEST_P(GnssHalTest, TestAllExtensions) {
+    if (aidl_gnss_hal_->getInterfaceVersion() == 1) {
+        return;
+    }
+
     sp<IGnssBatching> iGnssBatching;
     auto status = aidl_gnss_hal_->getExtensionGnssBatching(&iGnssBatching);
     if (status.isOk() && iGnssBatching != nullptr) {
@@ -826,7 +868,43 @@
     ASSERT_TRUE(status.isOk());
 
     // Set SUPL server host/port
-    status = iAGnss->setServer(AGnssType::SUPL, String16("supl.google.com"), 7275);
+    status = iAGnss->setServer(AGnssType::SUPL, std::string("supl.google.com"), 7275);
+    ASSERT_TRUE(status.isOk());
+}
+
+/*
+ * TestAGnssRilExtension:
+ * 1. Gets the IAGnssRil extension.
+ * 2. Sets AGnssRilCallback.
+ * 3. Sets reference location.
+ */
+TEST_P(GnssHalTest, TestAGnssRilExtension) {
+    if (aidl_gnss_hal_->getInterfaceVersion() == 1) {
+        return;
+    }
+    sp<IAGnssRil> iAGnssRil;
+    auto status = aidl_gnss_hal_->getExtensionAGnssRil(&iAGnssRil);
+    ASSERT_TRUE(status.isOk());
+    ASSERT_TRUE(iAGnssRil != nullptr);
+
+    auto agnssRilCallback = sp<AGnssRilCallbackAidl>::make();
+    status = iAGnssRil->setCallback(agnssRilCallback);
+    ASSERT_TRUE(status.isOk());
+
+    // Set RefLocation
+    IAGnssRil::AGnssRefLocationCellID agnssReflocationCellId;
+    agnssReflocationCellId.type = IAGnssRil::AGnssRefLocationType::LTE_CELLID;
+    agnssReflocationCellId.mcc = 466;
+    agnssReflocationCellId.mnc = 97;
+    agnssReflocationCellId.lac = 46697;
+    agnssReflocationCellId.cid = 59168142;
+    agnssReflocationCellId.pcid = 420;
+    agnssReflocationCellId.tac = 11460;
+    IAGnssRil::AGnssRefLocation agnssReflocation;
+    agnssReflocation.type = IAGnssRil::AGnssRefLocationType::LTE_CELLID;
+    agnssReflocation.cellID = agnssReflocationCellId;
+
+    status = iAGnssRil->setRefLocation(agnssReflocation);
     ASSERT_TRUE(status.isOk());
 }
 
@@ -842,7 +920,7 @@
     auto status = aidl_gnss_hal_->getExtensionGnssDebug(&iGnssDebug);
     ASSERT_TRUE(status.isOk());
 
-    if (!IsAutomotiveDevice() && gnss_cb_->info_cbq_.calledCount() > 0) {
+    if (!IsAutomotiveDevice()) {
         ASSERT_TRUE(iGnssDebug != nullptr);
 
         IGnssDebug::DebugData data;
@@ -876,3 +954,230 @@
                     data.time.frequencyUncertaintyNsPerSec <= 2.0e5);  // 200 ppm
     }
 }
+
+/*
+ * TestGnssVisibilityControlExtension:
+ * 1. Gets the IGnssVisibilityControl extension.
+ * 2. Sets GnssVisibilityControlCallback
+ * 3. Sets proxy apps
+ */
+TEST_P(GnssHalTest, TestGnssVisibilityControlExtension) {
+    if (aidl_gnss_hal_->getInterfaceVersion() == 1) {
+        return;
+    }
+    sp<IGnssVisibilityControl> iGnssVisibilityControl;
+    auto status = aidl_gnss_hal_->getExtensionGnssVisibilityControl(&iGnssVisibilityControl);
+    ASSERT_TRUE(status.isOk());
+    ASSERT_TRUE(iGnssVisibilityControl != nullptr);
+    auto gnssVisibilityControlCallback = sp<GnssVisibilityControlCallback>::make();
+    status = iGnssVisibilityControl->setCallback(gnssVisibilityControlCallback);
+    ASSERT_TRUE(status.isOk());
+
+    std::vector<std::string> proxyApps{std::string("com.example.ims"),
+                                       std::string("com.example.mdt")};
+    status = iGnssVisibilityControl->enableNfwLocationAccess(proxyApps);
+    ASSERT_TRUE(status.isOk());
+}
+
+/*
+ * TestGnssMeasurementSetCallbackWithOptions:
+ * 1. Gets the GnssMeasurementExtension and verifies that it returns a non-null extension.
+ * 2. Sets a GnssMeasurementCallback with intervalMillis option, waits for measurements reported,
+ *    and verifies mandatory fields are valid.
+ */
+TEST_P(GnssHalTest, TestGnssMeasurementSetCallbackWithOptions) {
+    if (aidl_gnss_hal_->getInterfaceVersion() == 1) {
+        return;
+    }
+    const int kFirstGnssMeasurementTimeoutSeconds = 10;
+    const int kNumMeasurementEvents = 5;
+
+    sp<IGnssMeasurementInterface> iGnssMeasurement;
+    auto status = aidl_gnss_hal_->getExtensionGnssMeasurement(&iGnssMeasurement);
+    ASSERT_TRUE(status.isOk());
+    ASSERT_TRUE(iGnssMeasurement != nullptr);
+
+    auto callback = sp<GnssMeasurementCallbackAidl>::make();
+    IGnssMeasurementInterface::Options options;
+    options.intervalMs = 2000;
+    status = iGnssMeasurement->setCallbackWithOptions(callback, options);
+    ASSERT_TRUE(status.isOk());
+
+    for (int i = 0; i < kNumMeasurementEvents; i++) {
+        GnssData lastMeasurement;
+        ASSERT_TRUE(callback->gnss_data_cbq_.retrieve(lastMeasurement,
+                                                      kFirstGnssMeasurementTimeoutSeconds));
+        EXPECT_EQ(callback->gnss_data_cbq_.calledCount(), i + 1);
+        ASSERT_TRUE(lastMeasurement.measurements.size() > 0);
+
+        // Validity check GnssData fields
+        CheckGnssMeasurementClockFields(lastMeasurement);
+    }
+
+    status = iGnssMeasurement->close();
+    ASSERT_TRUE(status.isOk());
+}
+
+/*
+ * TestGnssAgcInGnssMeasurement:
+ * 1. Gets the GnssMeasurementExtension and verifies that it returns a non-null extension.
+ * 2. Sets a GnssMeasurementCallback, waits for a measurement.
+ */
+TEST_P(GnssHalTest, TestGnssAgcInGnssMeasurement) {
+    if (aidl_gnss_hal_->getInterfaceVersion() == 1) {
+        return;
+    }
+    const int kFirstGnssMeasurementTimeoutSeconds = 10;
+    const int kNumMeasurementEvents = 15;
+
+    sp<IGnssMeasurementInterface> iGnssMeasurement;
+    auto status = aidl_gnss_hal_->getExtensionGnssMeasurement(&iGnssMeasurement);
+    ASSERT_TRUE(status.isOk());
+    ASSERT_TRUE(iGnssMeasurement != nullptr);
+
+    auto callback = sp<GnssMeasurementCallbackAidl>::make();
+    status = iGnssMeasurement->setCallback(callback, /* enableFullTracking= */ false,
+                                           /* enableCorrVecOutputs */ false);
+    ASSERT_TRUE(status.isOk());
+
+    for (int i = 0; i < kNumMeasurementEvents; i++) {
+        GnssData lastMeasurement;
+        ASSERT_TRUE(callback->gnss_data_cbq_.retrieve(lastMeasurement,
+                                                      kFirstGnssMeasurementTimeoutSeconds));
+        EXPECT_EQ(callback->gnss_data_cbq_.calledCount(), i + 1);
+        ASSERT_TRUE(lastMeasurement.measurements.size() > 0);
+
+        // Validity check GnssData fields
+        CheckGnssMeasurementClockFields(lastMeasurement);
+
+        ASSERT_TRUE(lastMeasurement.gnssAgcs.has_value());
+        for (const auto& gnssAgc : lastMeasurement.gnssAgcs.value()) {
+            ASSERT_TRUE(gnssAgc.has_value());
+            ASSERT_TRUE(gnssAgc.value().carrierFrequencyHz >= 0);
+        }
+    }
+
+    status = iGnssMeasurement->close();
+    ASSERT_TRUE(status.isOk());
+}
+
+/*
+ * TestGnssAntennaInfo:
+ * Sets a GnssAntennaInfoCallback, waits for report, and verifies
+ * 1. phaseCenterOffsetCoordinateMillimeters is valid
+ * 2. phaseCenterOffsetCoordinateUncertaintyMillimeters is valid.
+ * PhaseCenterVariationCorrections and SignalGainCorrections are optional.
+ */
+TEST_P(GnssHalTest, TestGnssAntennaInfo) {
+    const int kAntennaInfoTimeoutSeconds = 2;
+
+    if (aidl_gnss_hal_->getInterfaceVersion() == 1) {
+        return;
+    }
+
+    sp<IGnssAntennaInfo> iGnssAntennaInfo;
+    auto status = aidl_gnss_hal_->getExtensionGnssAntennaInfo(&iGnssAntennaInfo);
+    ASSERT_TRUE(status.isOk());
+
+    if (!(aidl_gnss_cb_->last_capabilities_ & (int)GnssCallbackAidl::CAPABILITY_ANTENNA_INFO) ||
+        iGnssAntennaInfo == nullptr) {
+        ALOGD("GnssAntennaInfo AIDL is not supported.");
+        return;
+    }
+
+    auto callback = sp<GnssAntennaInfoCallbackAidl>::make();
+    status = iGnssAntennaInfo->setCallback(callback);
+    ASSERT_TRUE(status.isOk());
+
+    std::vector<IGnssAntennaInfoCallback::GnssAntennaInfo> antennaInfos;
+    ASSERT_TRUE(callback->antenna_info_cbq_.retrieve(antennaInfos, kAntennaInfoTimeoutSeconds));
+    EXPECT_EQ(callback->antenna_info_cbq_.calledCount(), 1);
+    ASSERT_TRUE(antennaInfos.size() > 0);
+
+    for (auto antennaInfo : antennaInfos) {
+        // Remaining fields are optional
+        if (!antennaInfo.phaseCenterVariationCorrectionMillimeters.empty()) {
+            int numRows = antennaInfo.phaseCenterVariationCorrectionMillimeters.size();
+            int numColumns = antennaInfo.phaseCenterVariationCorrectionMillimeters[0].row.size();
+            // Must have at least 1 row and 2 columns
+            ASSERT_TRUE(numRows >= 1 && numColumns >= 2);
+
+            // Corrections and uncertainties must have same dimensions
+            ASSERT_TRUE(antennaInfo.phaseCenterVariationCorrectionMillimeters.size() ==
+                        antennaInfo.phaseCenterVariationCorrectionUncertaintyMillimeters.size());
+            ASSERT_TRUE(
+                    antennaInfo.phaseCenterVariationCorrectionMillimeters[0].row.size() ==
+                    antennaInfo.phaseCenterVariationCorrectionUncertaintyMillimeters[0].row.size());
+
+            // Must be rectangular
+            for (auto row : antennaInfo.phaseCenterVariationCorrectionMillimeters) {
+                ASSERT_TRUE(row.row.size() == numColumns);
+            }
+            for (auto row : antennaInfo.phaseCenterVariationCorrectionUncertaintyMillimeters) {
+                ASSERT_TRUE(row.row.size() == numColumns);
+            }
+        }
+        if (!antennaInfo.signalGainCorrectionDbi.empty()) {
+            int numRows = antennaInfo.signalGainCorrectionDbi.size();
+            int numColumns = antennaInfo.signalGainCorrectionUncertaintyDbi[0].row.size();
+            // Must have at least 1 row and 2 columns
+            ASSERT_TRUE(numRows >= 1 && numColumns >= 2);
+
+            // Corrections and uncertainties must have same dimensions
+            ASSERT_TRUE(antennaInfo.signalGainCorrectionDbi.size() ==
+                        antennaInfo.signalGainCorrectionUncertaintyDbi.size());
+            ASSERT_TRUE(antennaInfo.signalGainCorrectionDbi[0].row.size() ==
+                        antennaInfo.signalGainCorrectionUncertaintyDbi[0].row.size());
+
+            // Must be rectangular
+            for (auto row : antennaInfo.signalGainCorrectionDbi) {
+                ASSERT_TRUE(row.row.size() == numColumns);
+            }
+            for (auto row : antennaInfo.signalGainCorrectionUncertaintyDbi) {
+                ASSERT_TRUE(row.row.size() == numColumns);
+            }
+        }
+    }
+
+    iGnssAntennaInfo->close();
+}
+
+/*
+ * TestGnssMeasurementCorrections:
+ * If measurement corrections capability is supported, verifies that the measurement corrections
+ * capabilities are reported and the mandatory LOS_SATS or the EXCESS_PATH_LENGTH
+ * capability flag is set.
+ */
+TEST_P(GnssHalTest, TestGnssMeasurementCorrections) {
+    if (aidl_gnss_hal_->getInterfaceVersion() == 1) {
+        return;
+    }
+    if (!(aidl_gnss_cb_->last_capabilities_ &
+          (int)GnssCallbackAidl::CAPABILITY_MEASUREMENT_CORRECTIONS)) {
+        return;
+    }
+
+    sp<IMeasurementCorrectionsInterface> iMeasurementCorrectionsAidl;
+    auto status = aidl_gnss_hal_->getExtensionMeasurementCorrections(&iMeasurementCorrectionsAidl);
+    ASSERT_TRUE(status.isOk());
+    ASSERT_TRUE(iMeasurementCorrectionsAidl != nullptr);
+
+    // Setup measurement corrections callback.
+    auto gnssMeasurementCorrectionsCallback = sp<MeasurementCorrectionsCallback>::make();
+    status = iMeasurementCorrectionsAidl->setCallback(gnssMeasurementCorrectionsCallback);
+    ASSERT_TRUE(status.isOk());
+
+    const int kTimeoutSec = 5;
+    EXPECT_TRUE(gnssMeasurementCorrectionsCallback->capabilities_cbq_.retrieve(
+            gnssMeasurementCorrectionsCallback->last_capabilities_, kTimeoutSec));
+    ASSERT_TRUE(gnssMeasurementCorrectionsCallback->capabilities_cbq_.calledCount() > 0);
+
+    ASSERT_TRUE((gnssMeasurementCorrectionsCallback->last_capabilities_ &
+                 (MeasurementCorrectionsCallback::CAPABILITY_LOS_SATS |
+                  MeasurementCorrectionsCallback::CAPABILITY_EXCESS_PATH_LENGTH)) != 0);
+
+    // Set a mock MeasurementCorrections.
+    status = iMeasurementCorrectionsAidl->setCorrections(
+            Utils::getMockMeasurementCorrections_aidl());
+    ASSERT_TRUE(status.isOk());
+}
diff --git a/gnss/common/utils/default/Android.bp b/gnss/common/utils/default/Android.bp
index 05bec88..b896f04 100644
--- a/gnss/common/utils/default/Android.bp
+++ b/gnss/common/utils/default/Android.bp
@@ -39,6 +39,7 @@
         "v2_1/GnssMeasurement.cpp",
         "v2_1/GnssMeasurementCorrections.cpp",
         "DeviceFileReader.cpp",
+        "FixLocationParser.cpp",
         "GnssRawMeasurementParser.cpp",
         "GnssReplayUtils.cpp",
         "MockLocation.cpp",
diff --git a/gnss/common/utils/default/FixLocationParser.cpp b/gnss/common/utils/default/FixLocationParser.cpp
new file mode 100644
index 0000000..f391d96
--- /dev/null
+++ b/gnss/common/utils/default/FixLocationParser.cpp
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "FixLocationParser.h"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace common {
+
+using aidl::android::hardware::gnss::ElapsedRealtime;
+using aidl::android::hardware::gnss::GnssLocation;
+
+std::unique_ptr<GnssLocation> FixLocationParser::getLocationFromInputStr(
+        const std::string& locationStr) {
+    /*
+     * Fix,Provider,LatitudeDegrees,LongitudeDegrees,AltitudeMeters,SpeedMps,
+     * AccuracyMeters,BearingDegrees,UnixTimeMillis,SpeedAccuracyMps,BearingAccuracyDegrees,
+     * elapsedRealtimeNanos
+     */
+    if (locationStr.empty()) {
+        return nullptr;
+    }
+    std::vector<std::string> locationStrRecords;
+    ParseUtils::splitStr(locationStr, LINE_SEPARATOR, locationStrRecords);
+    if (locationStrRecords.empty()) {
+        return nullptr;
+    }
+
+    std::vector<std::string> locationValues;
+    ParseUtils::splitStr(locationStrRecords[0], COMMA_SEPARATOR, locationValues);
+    if (locationValues.size() < 12) {
+        return nullptr;
+    }
+    ElapsedRealtime elapsedRealtime = {
+            .flags = ElapsedRealtime::HAS_TIMESTAMP_NS | ElapsedRealtime::HAS_TIME_UNCERTAINTY_NS,
+            .timestampNs = ::android::elapsedRealtimeNano(),
+            // This is an hardcoded value indicating a 1ms of uncertainty between the two clocks.
+            // In an actual implementation provide an estimate of the synchronization uncertainty
+            // or don't set the field.
+            .timeUncertaintyNs = 1020400};
+
+    GnssLocation location = {
+            .gnssLocationFlags = 0xFF,
+            .latitudeDegrees = ParseUtils::tryParseDouble(locationValues[2], 0),
+            .longitudeDegrees = ParseUtils::tryParseDouble(locationValues[3], 0),
+            .altitudeMeters = ParseUtils::tryParseDouble(locationValues[4], 0),
+            .speedMetersPerSec = ParseUtils::tryParseDouble(locationValues[5], 0),
+            .bearingDegrees = ParseUtils::tryParseDouble(locationValues[7], 0),
+            .horizontalAccuracyMeters = ParseUtils::tryParseDouble(locationValues[6], 0),
+            .verticalAccuracyMeters = ParseUtils::tryParseDouble(locationValues[6], 0),
+            .speedAccuracyMetersPerSecond = ParseUtils::tryParseDouble(locationValues[9], 0),
+            .bearingAccuracyDegrees = ParseUtils::tryParseDouble(locationValues[10], 0),
+            .timestampMillis = ParseUtils::tryParseLongLong(locationValues[8], 0),
+            .elapsedRealtime = elapsedRealtime};
+    return std::make_unique<GnssLocation>(location);
+}
+
+}  // namespace common
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
\ No newline at end of file
diff --git a/gnss/common/utils/default/GnssReplayUtils.cpp b/gnss/common/utils/default/GnssReplayUtils.cpp
index e3f4ff8..5356477 100644
--- a/gnss/common/utils/default/GnssReplayUtils.cpp
+++ b/gnss/common/utils/default/GnssReplayUtils.cpp
@@ -41,7 +41,7 @@
 
 bool ReplayUtils::isNMEA(const std::string& inputStr) {
     return !inputStr.empty() && (inputStr.find("$GPRMC,", 0) != std::string::npos ||
-                                 inputStr.find("$GPRMA,", 0) != std::string::npos);
+                                 inputStr.find("$GPGGA,", 0) != std::string::npos);
 }
 
 }  // namespace common
diff --git a/gnss/common/utils/default/NmeaFixInfo.cpp b/gnss/common/utils/default/NmeaFixInfo.cpp
index c7ee134..22aef90 100644
--- a/gnss/common/utils/default/NmeaFixInfo.cpp
+++ b/gnss/common/utils/default/NmeaFixInfo.cpp
@@ -34,6 +34,9 @@
 namespace gnss {
 namespace common {
 
+using aidl::android::hardware::gnss::ElapsedRealtime;
+using aidl::android::hardware::gnss::GnssLocation;
+
 NmeaFixInfo::NmeaFixInfo() : hasGMCRecord(false), hasGGARecord(false) {}
 
 float NmeaFixInfo::getAltitudeMeters() const {
@@ -237,6 +240,40 @@
 }
 
 /**
+ * Convert V2_0::GnssLocation to aidl::GnssLocation.
+ */
+std::unique_ptr<GnssLocation> NmeaFixInfo::getAidlLocationFromInputStr(
+        const std::string& inputStr) {
+    std::unique_ptr<V2_0::GnssLocation> locationV2 = getLocationFromInputStr(inputStr);
+    if (locationV2 == nullptr) {
+        return nullptr;
+    }
+
+    ElapsedRealtime elapsedRealtime = {
+            .flags = ElapsedRealtime::HAS_TIMESTAMP_NS | ElapsedRealtime::HAS_TIME_UNCERTAINTY_NS,
+            .timestampNs = ::android::elapsedRealtimeNano(),
+            // This is an hardcoded value indicating a 1ms of uncertainty between the two clocks.
+            // In an actual implementation provide an estimate of the synchronization uncertainty
+            // or don't set the field.
+            .timeUncertaintyNs = 1020400};
+
+    GnssLocation location = {
+            .gnssLocationFlags = locationV2->v1_0.gnssLocationFlags,
+            .latitudeDegrees = locationV2->v1_0.latitudeDegrees,
+            .longitudeDegrees = locationV2->v1_0.longitudeDegrees,
+            .altitudeMeters = locationV2->v1_0.altitudeMeters,
+            .speedMetersPerSec = locationV2->v1_0.speedMetersPerSec,
+            .bearingDegrees = locationV2->v1_0.bearingDegrees,
+            .horizontalAccuracyMeters = locationV2->v1_0.horizontalAccuracyMeters,
+            .verticalAccuracyMeters = locationV2->v1_0.verticalAccuracyMeters,
+            .speedAccuracyMetersPerSecond = locationV2->v1_0.speedAccuracyMetersPerSecond,
+            .bearingAccuracyDegrees = locationV2->v1_0.bearingAccuracyDegrees,
+            .timestampMillis = locationV2->v1_0.timestamp,
+            .elapsedRealtime = elapsedRealtime};
+    return std::make_unique<GnssLocation>(location);
+}
+
+/**
  * Parses the input string in NMEA format and convert to GnssLocation.
  */
 std::unique_ptr<V2_0::GnssLocation> NmeaFixInfo::toGnssLocation() const {
diff --git a/gnss/common/utils/default/Utils.cpp b/gnss/common/utils/default/Utils.cpp
index c339e72..1ff84eb 100644
--- a/gnss/common/utils/default/Utils.cpp
+++ b/gnss/common/utils/default/Utils.cpp
@@ -27,14 +27,18 @@
 
 using aidl::android::hardware::gnss::ElapsedRealtime;
 using aidl::android::hardware::gnss::GnssClock;
+using aidl::android::hardware::gnss::GnssConstellationType;
 using aidl::android::hardware::gnss::GnssData;
 using aidl::android::hardware::gnss::GnssLocation;
 using aidl::android::hardware::gnss::GnssMeasurement;
 using aidl::android::hardware::gnss::IGnss;
 using aidl::android::hardware::gnss::IGnssMeasurementCallback;
 using aidl::android::hardware::gnss::SatellitePvt;
+using GnssSvInfo = aidl::android::hardware::gnss::IGnssCallback::GnssSvInfo;
+using GnssSvFlags = aidl::android::hardware::gnss::IGnssCallback::GnssSvFlags;
 
-using GnssSvFlags = V1_0::IGnssCallback::GnssSvFlags;
+using GnssSvFlagsV1_0 = V1_0::IGnssCallback::GnssSvFlags;
+using GnssAgc = aidl::android::hardware::gnss::GnssData::GnssAgc;
 using GnssMeasurementFlagsV1_0 = V1_0::IGnssMeasurementCallback::GnssMeasurementFlags;
 using GnssMeasurementFlagsV2_1 = V2_1::IGnssMeasurementCallback::GnssMeasurementFlags;
 using GnssMeasurementStateV2_0 = V2_0::IGnssMeasurementCallback::GnssMeasurementState;
@@ -144,7 +148,7 @@
 
 GnssData Utils::getMockMeasurement(const bool enableCorrVecOutputs) {
     aidl::android::hardware::gnss::GnssSignalType signalType = {
-            .constellation = aidl::android::hardware::gnss::GnssConstellationType::GLONASS,
+            .constellation = GnssConstellationType::GLONASS,
             .carrierFrequencyHz = 1.59975e+09,
             .codeType = aidl::android::hardware::gnss::GnssSignalType::CODE_TYPE_C,
     };
@@ -228,8 +232,23 @@
         measurement.flags |= GnssMeasurement::HAS_CORRELATION_VECTOR;
     }
 
-    GnssData gnssData = {
-            .measurements = {measurement}, .clock = clock, .elapsedRealtime = timestamp};
+    GnssAgc gnssAgc1 = {
+            .agcLevelDb = 3.5,
+            .constellation = GnssConstellationType::GLONASS,
+            .carrierFrequencyHz = (int64_t)kGloG1FreqHz,
+    };
+
+    GnssAgc gnssAgc2 = {
+            .agcLevelDb = -5.1,
+            .constellation = GnssConstellationType::GPS,
+            .carrierFrequencyHz = (int64_t)kGpsL1FreqHz,
+    };
+
+    GnssData gnssData = {.measurements = {measurement},
+                         .clock = clock,
+                         .elapsedRealtime = timestamp,
+                         .gnssAgcs = std::make_optional(std::vector(
+                                 {std::make_optional(gnssAgc1), std::make_optional(gnssAgc2)}))};
     return gnssData;
 }
 
@@ -289,6 +308,40 @@
     return location;
 }
 
+namespace {
+GnssSvInfo getMockSvInfo(int svid, GnssConstellationType type, float cN0DbHz, float basebandCN0DbHz,
+                         float elevationDegrees, float azimuthDegrees, long carrierFrequencyHz) {
+    GnssSvInfo svInfo = {
+            .svid = svid,
+            .constellation = type,
+            .cN0Dbhz = cN0DbHz,
+            .basebandCN0DbHz = basebandCN0DbHz,
+            .elevationDegrees = elevationDegrees,
+            .azimuthDegrees = azimuthDegrees,
+            .carrierFrequencyHz = carrierFrequencyHz,
+            .svFlag = (int)GnssSvFlags::USED_IN_FIX | (int)GnssSvFlags::HAS_EPHEMERIS_DATA |
+                      (int)GnssSvFlags::HAS_ALMANAC_DATA | (int)GnssSvFlags::HAS_CARRIER_FREQUENCY};
+    return svInfo;
+}
+}  // anonymous namespace
+
+std::vector<GnssSvInfo> Utils::getMockSvInfoList() {
+    std::vector<GnssSvInfo> gnssSvInfoList = {
+            getMockSvInfo(3, GnssConstellationType::GPS, 32.5, 27.5, 59.1, 166.5, kGpsL1FreqHz),
+            getMockSvInfo(5, GnssConstellationType::GPS, 27.0, 22.0, 29.0, 56.5, kGpsL1FreqHz),
+            getMockSvInfo(17, GnssConstellationType::GPS, 30.5, 25.5, 71.0, 77.0, kGpsL5FreqHz),
+            getMockSvInfo(26, GnssConstellationType::GPS, 24.1, 19.1, 28.0, 253.0, kGpsL5FreqHz),
+            getMockSvInfo(5, GnssConstellationType::GLONASS, 20.5, 15.5, 11.5, 116.0, kGloG1FreqHz),
+            getMockSvInfo(17, GnssConstellationType::GLONASS, 21.5, 16.5, 28.5, 186.0,
+                          kGloG1FreqHz),
+            getMockSvInfo(18, GnssConstellationType::GLONASS, 28.3, 25.3, 38.8, 69.0, kGloG1FreqHz),
+            getMockSvInfo(10, GnssConstellationType::GLONASS, 25.0, 20.0, 66.0, 247.0,
+                          kGloG1FreqHz),
+            getMockSvInfo(3, GnssConstellationType::IRNSS, 22.0, 19.7, 35.0, 112.0, kIrnssL5FreqHz),
+    };
+    return gnssSvInfoList;
+}
+
 hidl_vec<GnssSvInfoV2_1> Utils::getMockSvInfoListV2_1() {
     GnssSvInfoV1_0 gnssSvInfoV1_0 = Utils::getMockSvInfoV1_0(3, V1_0::GnssConstellationType::GPS,
                                                              32.5, 59.1, 166.5, kGpsL1FreqHz);
@@ -360,15 +413,15 @@
 GnssSvInfoV1_0 Utils::getMockSvInfoV1_0(int16_t svid, V1_0::GnssConstellationType type,
                                         float cN0DbHz, float elevationDegrees, float azimuthDegrees,
                                         float carrierFrequencyHz) {
-    GnssSvInfoV1_0 svInfo = {.svid = svid,
-                             .constellation = type,
-                             .cN0Dbhz = cN0DbHz,
-                             .elevationDegrees = elevationDegrees,
-                             .azimuthDegrees = azimuthDegrees,
-                             .carrierFrequencyHz = carrierFrequencyHz,
-                             .svFlag = GnssSvFlags::USED_IN_FIX | GnssSvFlags::HAS_EPHEMERIS_DATA |
-                                       GnssSvFlags::HAS_ALMANAC_DATA |
-                                       GnssSvFlags::HAS_CARRIER_FREQUENCY};
+    GnssSvInfoV1_0 svInfo = {
+            .svid = svid,
+            .constellation = type,
+            .cN0Dbhz = cN0DbHz,
+            .elevationDegrees = elevationDegrees,
+            .azimuthDegrees = azimuthDegrees,
+            .carrierFrequencyHz = carrierFrequencyHz,
+            .svFlag = GnssSvFlagsV1_0::USED_IN_FIX | GnssSvFlagsV1_0::HAS_EPHEMERIS_DATA |
+                      GnssSvFlagsV1_0::HAS_ALMANAC_DATA | GnssSvFlagsV1_0::HAS_CARRIER_FREQUENCY};
     return svInfo;
 }
 
diff --git a/gnss/common/utils/default/include/FixLocationParser.h b/gnss/common/utils/default/include/FixLocationParser.h
new file mode 100644
index 0000000..a738914
--- /dev/null
+++ b/gnss/common/utils/default/include/FixLocationParser.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef android_hardware_gnss_common_default_FixLocationParser_H_
+#define android_hardware_gnss_common_default_FixLocationParser_H_
+
+#include <aidl/android/hardware/gnss/BnGnss.h>
+
+#include <utils/SystemClock.h>
+#include <string>
+#include <vector>
+
+#include <Constants.h>
+#include <Utils.h>
+#include <log/log.h>
+#include "Constants.h"
+#include "ParseUtils.h"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace common {
+
+struct FixLocationParser {
+  public:
+    static std::unique_ptr<aidl::android::hardware::gnss::GnssLocation> getLocationFromInputStr(
+            const std::string& inputStr);
+};
+
+}  // namespace common
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // android_hardware_gnss_common_default_FixLocationParser_H_
\ No newline at end of file
diff --git a/gnss/common/utils/default/include/NmeaFixInfo.h b/gnss/common/utils/default/include/NmeaFixInfo.h
index 5c27045..4073361 100644
--- a/gnss/common/utils/default/include/NmeaFixInfo.h
+++ b/gnss/common/utils/default/include/NmeaFixInfo.h
@@ -22,6 +22,7 @@
 #include <hidl/Status.h>
 #include <ctime>
 #include <string>
+#include "aidl/android/hardware/gnss/IGnss.h"
 namespace android {
 namespace hardware {
 namespace gnss {
@@ -45,6 +46,8 @@
 
   public:
     static std::unique_ptr<V2_0::GnssLocation> getLocationFromInputStr(const std::string& inputStr);
+    static std::unique_ptr<aidl::android::hardware::gnss::GnssLocation> getAidlLocationFromInputStr(
+            const std::string& inputStr);
 
   private:
     static void splitStr(const std::string& line, const char& delimiter,
diff --git a/gnss/common/utils/default/include/Utils.h b/gnss/common/utils/default/include/Utils.h
index 4500ee6..7065a6fb 100644
--- a/gnss/common/utils/default/include/Utils.h
+++ b/gnss/common/utils/default/include/Utils.h
@@ -35,9 +35,13 @@
             const bool enableCorrVecOutputs);
     static V2_0::IGnssMeasurementCallback::GnssData getMockMeasurementV2_0();
     static V2_1::IGnssMeasurementCallback::GnssData getMockMeasurementV2_1();
+
     static aidl::android::hardware::gnss::GnssLocation getMockLocation();
     static V2_0::GnssLocation getMockLocationV2_0();
     static V1_0::GnssLocation getMockLocationV1_0();
+
+    static std::vector<aidl::android::hardware::gnss::IGnssCallback::GnssSvInfo>
+    getMockSvInfoList();
     static hidl_vec<V2_1::IGnssCallback::GnssSvInfo> getMockSvInfoListV2_1();
     static V2_1::IGnssCallback::GnssSvInfo getMockSvInfoV2_1(
             V2_0::IGnssCallback::GnssSvInfo gnssSvInfoV2_0, float basebandCN0DbHz);
@@ -48,6 +52,7 @@
                                                              float cN0DbHz, float elevationDegrees,
                                                              float azimuthDegrees,
                                                              float carrierFrequencyHz);
+
     static hidl_vec<V2_1::IGnssAntennaInfoCallback::GnssAntennaInfo> getMockAntennaInfos();
 };
 
diff --git a/gnss/common/utils/vts/Android.bp b/gnss/common/utils/vts/Android.bp
index 47eff2e..f92e609 100644
--- a/gnss/common/utils/vts/Android.bp
+++ b/gnss/common/utils/vts/Android.bp
@@ -44,6 +44,7 @@
         "android.hardware.gnss@2.1",
         "android.hardware.gnss.measurement_corrections@1.0",
         "android.hardware.gnss.measurement_corrections@1.1",
+        "android.hardware.gnss-V2-cpp",
     ],
     static_libs: [
         "libgtest",
diff --git a/gnss/common/utils/vts/Utils.cpp b/gnss/common/utils/vts/Utils.cpp
index be22ff6..da4c07f 100644
--- a/gnss/common/utils/vts/Utils.cpp
+++ b/gnss/common/utils/vts/Utils.cpp
@@ -15,6 +15,8 @@
  */
 
 #include <Utils.h>
+#include <android/hardware/gnss/BnGnss.h>
+#include <android/hardware/gnss/IGnss.h>
 #include "gtest/gtest.h"
 
 #include <cutils/properties.h>
@@ -27,71 +29,20 @@
 using namespace measurement_corrections::V1_0;
 using V1_0::GnssLocationFlags;
 
-void Utils::checkLocation(const V1_0::GnssLocation& location, bool check_speed,
-                          bool check_more_accuracies) {
-    EXPECT_TRUE(location.gnssLocationFlags & GnssLocationFlags::HAS_LAT_LONG);
-    EXPECT_TRUE(location.gnssLocationFlags & GnssLocationFlags::HAS_ALTITUDE);
-    if (check_speed) {
-        EXPECT_TRUE(location.gnssLocationFlags & GnssLocationFlags::HAS_SPEED);
-    }
-    EXPECT_TRUE(location.gnssLocationFlags & GnssLocationFlags::HAS_HORIZONTAL_ACCURACY);
-    // New uncertainties available in O must be provided,
-    // at least when paired with modern hardware (2017+)
-    if (check_more_accuracies) {
-        EXPECT_TRUE(location.gnssLocationFlags & GnssLocationFlags::HAS_VERTICAL_ACCURACY);
-        if (check_speed) {
-            EXPECT_TRUE(location.gnssLocationFlags & GnssLocationFlags::HAS_SPEED_ACCURACY);
-            if (location.gnssLocationFlags & GnssLocationFlags::HAS_BEARING) {
-                EXPECT_TRUE(location.gnssLocationFlags & GnssLocationFlags::HAS_BEARING_ACCURACY);
-            }
-        }
-    }
-    EXPECT_GE(location.latitudeDegrees, -90.0);
-    EXPECT_LE(location.latitudeDegrees, 90.0);
-    EXPECT_GE(location.longitudeDegrees, -180.0);
-    EXPECT_LE(location.longitudeDegrees, 180.0);
-    EXPECT_GE(location.altitudeMeters, -1000.0);
-    EXPECT_LE(location.altitudeMeters, 30000.0);
-    if (check_speed) {
-        EXPECT_GE(location.speedMetersPerSec, 0.0);
-        EXPECT_LE(location.speedMetersPerSec, 5.0);  // VTS tests are stationary.
+using MeasurementCorrectionsAidl =
+        android::hardware::gnss::measurement_corrections::MeasurementCorrections;
+using ReflectingPlaneAidl = android::hardware::gnss::measurement_corrections::ReflectingPlane;
+using SingleSatCorrectionAidl =
+        android::hardware::gnss::measurement_corrections::SingleSatCorrection;
 
-        // Non-zero speeds must be reported with an associated bearing
-        if (location.speedMetersPerSec > 0.0) {
-            EXPECT_TRUE(location.gnssLocationFlags & GnssLocationFlags::HAS_BEARING);
-        }
-    }
+template <>
+int64_t Utils::getLocationTimestampMillis(const android::hardware::gnss::GnssLocation& location) {
+    return location.timestampMillis;
+}
 
-    /*
-     * Tolerating some especially high values for accuracy estimate, in case of
-     * first fix with especially poor geometry (happens occasionally)
-     */
-    EXPECT_GT(location.horizontalAccuracyMeters, 0.0);
-    EXPECT_LE(location.horizontalAccuracyMeters, 250.0);
-
-    /*
-     * Some devices may define bearing as -180 to +180, others as 0 to 360.
-     * Both are okay & understandable.
-     */
-    if (location.gnssLocationFlags & GnssLocationFlags::HAS_BEARING) {
-        EXPECT_GE(location.bearingDegrees, -180.0);
-        EXPECT_LE(location.bearingDegrees, 360.0);
-    }
-    if (location.gnssLocationFlags & GnssLocationFlags::HAS_VERTICAL_ACCURACY) {
-        EXPECT_GT(location.verticalAccuracyMeters, 0.0);
-        EXPECT_LE(location.verticalAccuracyMeters, 500.0);
-    }
-    if (location.gnssLocationFlags & GnssLocationFlags::HAS_SPEED_ACCURACY) {
-        EXPECT_GT(location.speedAccuracyMetersPerSecond, 0.0);
-        EXPECT_LE(location.speedAccuracyMetersPerSecond, 50.0);
-    }
-    if (location.gnssLocationFlags & GnssLocationFlags::HAS_BEARING_ACCURACY) {
-        EXPECT_GT(location.bearingAccuracyDegrees, 0.0);
-        EXPECT_LE(location.bearingAccuracyDegrees, 360.0);
-    }
-
-    // Check timestamp > 1.48e12 (47 years in msec - 1970->2017+)
-    EXPECT_GT(location.timestamp, 1.48e12);
+template <>
+int64_t Utils::getLocationTimestampMillis(const V1_0::GnssLocation& location) {
+    return location.timestamp;
 }
 
 const MeasurementCorrections Utils::getMockMeasurementCorrections() {
@@ -119,6 +70,7 @@
             .singleSatCorrectionFlags = GnssSingleSatCorrectionFlags::HAS_SAT_IS_LOS_PROBABILITY |
                                         GnssSingleSatCorrectionFlags::HAS_EXCESS_PATH_LENGTH |
                                         GnssSingleSatCorrectionFlags::HAS_EXCESS_PATH_LENGTH_UNC,
+
             .constellation = V1_0::GnssConstellationType::GPS,
             .svid = 9,
             .carrierFrequencyHz = 1.59975e+09,
@@ -170,6 +122,56 @@
     return mockCorrections_1_1;
 }
 
+const MeasurementCorrectionsAidl Utils::getMockMeasurementCorrections_aidl() {
+    ReflectingPlaneAidl reflectingPlane;
+    reflectingPlane.latitudeDegrees = 37.4220039;
+    reflectingPlane.longitudeDegrees = -122.0840991;
+    reflectingPlane.altitudeMeters = 250.35;
+    reflectingPlane.azimuthDegrees = 203.0;
+
+    SingleSatCorrectionAidl singleSatCorrection1;
+    singleSatCorrection1.singleSatCorrectionFlags =
+            SingleSatCorrectionAidl::SINGLE_SAT_CORRECTION_HAS_SAT_IS_LOS_PROBABILITY |
+            SingleSatCorrectionAidl::SINGLE_SAT_CORRECTION_HAS_EXCESS_PATH_LENGTH |
+            SingleSatCorrectionAidl::SINGLE_SAT_CORRECTION_HAS_EXCESS_PATH_LENGTH_UNC |
+            SingleSatCorrectionAidl::SINGLE_SAT_CORRECTION_HAS_REFLECTING_PLANE;
+    singleSatCorrection1.constellation = android::hardware::gnss::GnssConstellationType::GPS;
+    singleSatCorrection1.svid = 12;
+    singleSatCorrection1.carrierFrequencyHz = 1.59975e+09;
+    singleSatCorrection1.probSatIsLos = 0.50001;
+    singleSatCorrection1.excessPathLengthMeters = 137.4802;
+    singleSatCorrection1.excessPathLengthUncertaintyMeters = 25.5;
+    singleSatCorrection1.reflectingPlane = reflectingPlane;
+
+    SingleSatCorrectionAidl singleSatCorrection2;
+    singleSatCorrection2.singleSatCorrectionFlags =
+            SingleSatCorrectionAidl::SINGLE_SAT_CORRECTION_HAS_SAT_IS_LOS_PROBABILITY |
+            SingleSatCorrectionAidl::SINGLE_SAT_CORRECTION_HAS_EXCESS_PATH_LENGTH |
+            SingleSatCorrectionAidl::SINGLE_SAT_CORRECTION_HAS_EXCESS_PATH_LENGTH_UNC;
+    singleSatCorrection2.constellation = GnssConstellationType::GPS;
+    singleSatCorrection2.svid = 9;
+    singleSatCorrection2.carrierFrequencyHz = 1.59975e+09;
+    singleSatCorrection2.probSatIsLos = 0.873;
+    singleSatCorrection2.excessPathLengthMeters = 26.294;
+    singleSatCorrection2.excessPathLengthUncertaintyMeters = 10.0;
+
+    std::vector<SingleSatCorrectionAidl> singleSatCorrections = {singleSatCorrection1,
+                                                                 singleSatCorrection2};
+    MeasurementCorrectionsAidl mockCorrections;
+    mockCorrections.latitudeDegrees = 37.4219999;
+    mockCorrections.longitudeDegrees = -122.0840575;
+    mockCorrections.altitudeMeters = 30.60062531;
+    mockCorrections.horizontalPositionUncertaintyMeters = 9.23542;
+    mockCorrections.verticalPositionUncertaintyMeters = 15.02341;
+    mockCorrections.toaGpsNanosecondsOfWeek = 2935633453L;
+    mockCorrections.hasEnvironmentBearing = true;
+    mockCorrections.environmentBearingDegrees = 45.0;
+    mockCorrections.environmentBearingUncertaintyDegrees = 4.0;
+    mockCorrections.satCorrections = singleSatCorrections;
+
+    return mockCorrections;
+}
+
 /*
  * MapConstellationType:
  * Given a GnssConstellationType_2_0 type constellation, maps to its equivalent
diff --git a/gnss/common/utils/vts/include/Utils.h b/gnss/common/utils/vts/include/Utils.h
index 91c1167..4ea6cd6 100644
--- a/gnss/common/utils/vts/include/Utils.h
+++ b/gnss/common/utils/vts/include/Utils.h
@@ -21,6 +21,9 @@
 #include <android/hardware/gnss/2.0/IGnss.h>
 #include <android/hardware/gnss/measurement_corrections/1.0/IMeasurementCorrections.h>
 #include <android/hardware/gnss/measurement_corrections/1.1/IMeasurementCorrections.h>
+#include <android/hardware/gnss/measurement_corrections/BnMeasurementCorrectionsInterface.h>
+
+#include <gtest/gtest.h>
 
 namespace android {
 namespace hardware {
@@ -28,19 +31,94 @@
 namespace common {
 
 struct Utils {
-    static void checkLocation(const V1_0::GnssLocation& location, bool check_speed,
-                              bool check_more_accuracies);
+  public:
+    template <class T>
+    static void checkLocation(const T& location, bool check_speed, bool check_more_accuracies);
     static const measurement_corrections::V1_0::MeasurementCorrections
     getMockMeasurementCorrections();
     static const measurement_corrections::V1_1::MeasurementCorrections
     getMockMeasurementCorrections_1_1();
+    static const android::hardware::gnss::measurement_corrections::MeasurementCorrections
+    getMockMeasurementCorrections_aidl();
 
     static V1_0::GnssConstellationType mapConstellationType(
             V2_0::GnssConstellationType constellation);
 
     static bool isAutomotiveDevice();
+
+  private:
+    template <class T>
+    static int64_t getLocationTimestampMillis(const T&);
 };
 
+template <class T>
+void Utils::checkLocation(const T& location, bool check_speed, bool check_more_accuracies) {
+    EXPECT_TRUE(location.gnssLocationFlags & V1_0::GnssLocationFlags::HAS_LAT_LONG);
+    EXPECT_TRUE(location.gnssLocationFlags & V1_0::GnssLocationFlags::HAS_ALTITUDE);
+    if (check_speed) {
+        EXPECT_TRUE(location.gnssLocationFlags & V1_0::GnssLocationFlags::HAS_SPEED);
+    }
+    EXPECT_TRUE(location.gnssLocationFlags & V1_0::GnssLocationFlags::HAS_HORIZONTAL_ACCURACY);
+    // New uncertainties available in O must be provided,
+    // at least when paired with modern hardware (2017+)
+    if (check_more_accuracies) {
+        EXPECT_TRUE(location.gnssLocationFlags & V1_0::GnssLocationFlags::HAS_VERTICAL_ACCURACY);
+        if (check_speed) {
+            EXPECT_TRUE(location.gnssLocationFlags & V1_0::GnssLocationFlags::HAS_SPEED_ACCURACY);
+            if (location.gnssLocationFlags & V1_0::GnssLocationFlags::HAS_BEARING) {
+                EXPECT_TRUE(location.gnssLocationFlags &
+                            V1_0::GnssLocationFlags::HAS_BEARING_ACCURACY);
+            }
+        }
+    }
+    EXPECT_GE(location.latitudeDegrees, -90.0);
+    EXPECT_LE(location.latitudeDegrees, 90.0);
+    EXPECT_GE(location.longitudeDegrees, -180.0);
+    EXPECT_LE(location.longitudeDegrees, 180.0);
+    EXPECT_GE(location.altitudeMeters, -1000.0);
+    EXPECT_LE(location.altitudeMeters, 30000.0);
+    if (check_speed) {
+        EXPECT_GE(location.speedMetersPerSec, 0.0);
+        EXPECT_LE(location.speedMetersPerSec, 5.0);  // VTS tests are stationary.
+
+        // Non-zero speeds must be reported with an associated bearing
+        if (location.speedMetersPerSec > 0.0) {
+            EXPECT_TRUE(location.gnssLocationFlags & V1_0::GnssLocationFlags::HAS_BEARING);
+        }
+    }
+
+    /*
+     * Tolerating some especially high values for accuracy estimate, in case of
+     * first fix with especially poor geometry (happens occasionally)
+     */
+    EXPECT_GT(location.horizontalAccuracyMeters, 0.0);
+    EXPECT_LE(location.horizontalAccuracyMeters, 250.0);
+
+    /*
+     * Some devices may define bearing as -180 to +180, others as 0 to 360.
+     * Both are okay & understandable.
+     */
+    if (location.gnssLocationFlags & V1_0::GnssLocationFlags::HAS_BEARING) {
+        EXPECT_GE(location.bearingDegrees, -180.0);
+        EXPECT_LE(location.bearingDegrees, 360.0);
+    }
+    if (location.gnssLocationFlags & V1_0::GnssLocationFlags::HAS_VERTICAL_ACCURACY) {
+        EXPECT_GT(location.verticalAccuracyMeters, 0.0);
+        EXPECT_LE(location.verticalAccuracyMeters, 500.0);
+    }
+    if (location.gnssLocationFlags & V1_0::GnssLocationFlags::HAS_SPEED_ACCURACY) {
+        EXPECT_GT(location.speedAccuracyMetersPerSecond, 0.0);
+        EXPECT_LE(location.speedAccuracyMetersPerSecond, 50.0);
+    }
+    if (location.gnssLocationFlags & V1_0::GnssLocationFlags::HAS_BEARING_ACCURACY) {
+        EXPECT_GT(location.bearingAccuracyDegrees, 0.0);
+        EXPECT_LE(location.bearingAccuracyDegrees, 360.0);
+    }
+
+    // Check timestamp > 1.48e12 (47 years in msec - 1970->2017+)
+    EXPECT_GT(getLocationTimestampMillis(location), 1.48e12);
+}
+
 }  // namespace common
 }  // namespace gnss
 }  // namespace hardware
diff --git a/gnss/common/utils/vts/include/v2_1/GnssCallback.h b/gnss/common/utils/vts/include/v2_1/GnssCallback.h
index ab1375d..09a67de 100644
--- a/gnss/common/utils/vts/include/v2_1/GnssCallback.h
+++ b/gnss/common/utils/vts/include/v2_1/GnssCallback.h
@@ -28,7 +28,6 @@
 using android::hardware::gnss::common::GnssCallbackEventQueue;
 using android::hardware::gnss::measurement_corrections::V1_0::IMeasurementCorrectionsCallback;
 using android::hardware::gnss::V1_0::GnssLocationFlags;
-using android::hardware::gnss::V2_0::GnssConstellationType;
 
 using GnssLocation_1_0 = android::hardware::gnss::V1_0::GnssLocation;
 using GnssLocation_2_0 = android::hardware::gnss::V2_0::GnssLocation;
diff --git a/graphics/common/aidl/aidl_api/android.hardware.graphics.common/current/android/hardware/graphics/common/Transform.aidl b/graphics/common/aidl/aidl_api/android.hardware.graphics.common/current/android/hardware/graphics/common/Transform.aidl
index 5c3d4cb..359c655 100644
--- a/graphics/common/aidl/aidl_api/android.hardware.graphics.common/current/android/hardware/graphics/common/Transform.aidl
+++ b/graphics/common/aidl/aidl_api/android.hardware.graphics.common/current/android/hardware/graphics/common/Transform.aidl
@@ -34,6 +34,7 @@
 package android.hardware.graphics.common;
 @Backing(type="int") @VintfStability
 enum Transform {
+  NONE = 0,
   FLIP_H = 1,
   FLIP_V = 2,
   ROT_90 = 4,
diff --git a/graphics/common/aidl/android/hardware/graphics/common/Transform.aidl b/graphics/common/aidl/android/hardware/graphics/common/Transform.aidl
index 325816c..4b3a1b1 100644
--- a/graphics/common/aidl/android/hardware/graphics/common/Transform.aidl
+++ b/graphics/common/aidl/android/hardware/graphics/common/Transform.aidl
@@ -23,6 +23,11 @@
 @Backing(type="int")
 enum Transform {
     /**
+     * Identity transform (i.e. no rotation or flip).
+     */
+    NONE = 0,
+
+    /**
      * Horizontal flip. FLIP_H/FLIP_V is applied before ROT_90.
      */
     FLIP_H = 1 << 0,
diff --git a/graphics/composer/2.1/default/OWNERS b/graphics/composer/2.1/default/OWNERS
index 709c4d1..331c80d 100644
--- a/graphics/composer/2.1/default/OWNERS
+++ b/graphics/composer/2.1/default/OWNERS
@@ -1,3 +1,4 @@
 # Graphics team
 adyabr@google.com
+alecmouri@google.com
 lpy@google.com
diff --git a/graphics/composer/2.1/utils/OWNERS b/graphics/composer/2.1/utils/OWNERS
index 7af69b4..83c4f5f 100644
--- a/graphics/composer/2.1/utils/OWNERS
+++ b/graphics/composer/2.1/utils/OWNERS
@@ -1,2 +1,3 @@
 adyabr@google.com
+alecmouri@google.com
 lpy@google.com
diff --git a/graphics/composer/2.1/vts/OWNERS b/graphics/composer/2.1/vts/OWNERS
index ea06752..a643bbd 100644
--- a/graphics/composer/2.1/vts/OWNERS
+++ b/graphics/composer/2.1/vts/OWNERS
@@ -1,5 +1,6 @@
 # Graphics team
 adyabr@google.com
+alecmouri@google.com
 lpy@google.com
 
 # VTS team
diff --git a/graphics/composer/2.1/vts/functional/OWNERS b/graphics/composer/2.1/vts/functional/OWNERS
index a2ed8c8..3d970d1 100644
--- a/graphics/composer/2.1/vts/functional/OWNERS
+++ b/graphics/composer/2.1/vts/functional/OWNERS
@@ -1,2 +1,4 @@
 # Bug component: 25423
+adyabr@google.com
+alecmouri@google.com
 sumir@google.com
diff --git a/graphics/composer/2.2/default/OWNERS b/graphics/composer/2.2/default/OWNERS
index 709c4d1..e8f584d 100644
--- a/graphics/composer/2.2/default/OWNERS
+++ b/graphics/composer/2.2/default/OWNERS
@@ -1,3 +1,5 @@
 # Graphics team
 adyabr@google.com
+alecmouri@google.com
 lpy@google.com
+
diff --git a/graphics/composer/2.2/utils/OWNERS b/graphics/composer/2.2/utils/OWNERS
index 709c4d1..331c80d 100644
--- a/graphics/composer/2.2/utils/OWNERS
+++ b/graphics/composer/2.2/utils/OWNERS
@@ -1,3 +1,4 @@
 # Graphics team
 adyabr@google.com
+alecmouri@google.com
 lpy@google.com
diff --git a/graphics/composer/2.2/utils/vts/ReadbackVts.cpp b/graphics/composer/2.2/utils/vts/ReadbackVts.cpp
index 30596fc..a1794af 100644
--- a/graphics/composer/2.2/utils/vts/ReadbackVts.cpp
+++ b/graphics/composer/2.2/utils/vts/ReadbackVts.cpp
@@ -17,6 +17,7 @@
 #include <composer-vts/2.2/ReadbackVts.h>
 #include <composer-vts/2.2/RenderEngineVts.h>
 #include "renderengine/ExternalTexture.h"
+#include "renderengine/impl/ExternalTexture.h"
 
 namespace android {
 namespace hardware {
@@ -281,11 +282,11 @@
 
 LayerSettings TestBufferLayer::toRenderEngineLayerSettings() {
     LayerSettings layerSettings = TestLayer::toRenderEngineLayerSettings();
-    layerSettings.source.buffer.buffer = std::make_shared<renderengine::ExternalTexture>(
+    layerSettings.source.buffer.buffer = std::make_shared<renderengine::impl::ExternalTexture>(
             new GraphicBuffer(mBufferHandle->get(), GraphicBuffer::CLONE_HANDLE, mWidth, mHeight,
                               static_cast<int32_t>(mFormat), 1, mUsage, mStride),
             mRenderEngine.getInternalRenderEngine(),
-            renderengine::ExternalTexture::Usage::READABLE);
+            renderengine::impl::ExternalTexture::Usage::READABLE);
 
     layerSettings.source.buffer.usePremultipliedAlpha =
             mBlendMode == IComposerClient::BlendMode::PREMULTIPLIED;
diff --git a/graphics/composer/2.2/utils/vts/RenderEngineVts.cpp b/graphics/composer/2.2/utils/vts/RenderEngineVts.cpp
index 2d4cc7d..4a33fb5 100644
--- a/graphics/composer/2.2/utils/vts/RenderEngineVts.cpp
+++ b/graphics/composer/2.2/utils/vts/RenderEngineVts.cpp
@@ -15,6 +15,7 @@
  */
 
 #include <composer-vts/2.2/RenderEngineVts.h>
+#include "renderengine/impl/ExternalTexture.h"
 
 namespace android {
 namespace hardware {
@@ -68,8 +69,8 @@
                    [](renderengine::LayerSettings& settings) -> renderengine::LayerSettings {
                        return settings;
                    });
-    auto texture = std::make_shared<renderengine::ExternalTexture>(
-            mGraphicBuffer, *mRenderEngine, renderengine::ExternalTexture::Usage::WRITEABLE);
+    auto texture = std::make_shared<renderengine::impl::ExternalTexture>(
+            mGraphicBuffer, *mRenderEngine, renderengine::impl::ExternalTexture::Usage::WRITEABLE);
     auto [status, readyFence] = mRenderEngine
                                         ->drawLayers(mDisplaySettings, compositionLayers, texture,
                                                      true, std::move(bufferFence))
diff --git a/graphics/composer/2.2/vts/functional/OWNERS b/graphics/composer/2.2/vts/functional/OWNERS
index 31b0dc7..a4eb0ca 100644
--- a/graphics/composer/2.2/vts/functional/OWNERS
+++ b/graphics/composer/2.2/vts/functional/OWNERS
@@ -1,5 +1,6 @@
 # Bug component: 25423
 # Graphics team
 adyabr@google.com
+alecmouri@google.com
 lpy@google.com
 sumir@google.com
diff --git a/graphics/composer/2.3/default/OWNERS b/graphics/composer/2.3/default/OWNERS
index 709c4d1..331c80d 100644
--- a/graphics/composer/2.3/default/OWNERS
+++ b/graphics/composer/2.3/default/OWNERS
@@ -1,3 +1,4 @@
 # Graphics team
 adyabr@google.com
+alecmouri@google.com
 lpy@google.com
diff --git a/graphics/composer/2.3/utils/OWNERS b/graphics/composer/2.3/utils/OWNERS
index 709c4d1..331c80d 100644
--- a/graphics/composer/2.3/utils/OWNERS
+++ b/graphics/composer/2.3/utils/OWNERS
@@ -1,3 +1,4 @@
 # Graphics team
 adyabr@google.com
+alecmouri@google.com
 lpy@google.com
diff --git a/graphics/composer/2.3/vts/functional/OWNERS b/graphics/composer/2.3/vts/functional/OWNERS
index 31b0dc7..a4eb0ca 100644
--- a/graphics/composer/2.3/vts/functional/OWNERS
+++ b/graphics/composer/2.3/vts/functional/OWNERS
@@ -1,5 +1,6 @@
 # Bug component: 25423
 # Graphics team
 adyabr@google.com
+alecmouri@google.com
 lpy@google.com
 sumir@google.com
diff --git a/graphics/composer/2.4/default/OWNERS b/graphics/composer/2.4/default/OWNERS
index 709c4d1..331c80d 100644
--- a/graphics/composer/2.4/default/OWNERS
+++ b/graphics/composer/2.4/default/OWNERS
@@ -1,3 +1,4 @@
 # Graphics team
 adyabr@google.com
+alecmouri@google.com
 lpy@google.com
diff --git a/graphics/composer/2.4/utils/OWNERS b/graphics/composer/2.4/utils/OWNERS
index 709c4d1..331c80d 100644
--- a/graphics/composer/2.4/utils/OWNERS
+++ b/graphics/composer/2.4/utils/OWNERS
@@ -1,3 +1,4 @@
 # Graphics team
 adyabr@google.com
+alecmouri@google.com
 lpy@google.com
diff --git a/graphics/composer/2.4/vts/functional/OWNERS b/graphics/composer/2.4/vts/functional/OWNERS
index 31b0dc7..a4eb0ca 100644
--- a/graphics/composer/2.4/vts/functional/OWNERS
+++ b/graphics/composer/2.4/vts/functional/OWNERS
@@ -1,5 +1,6 @@
 # Bug component: 25423
 # Graphics team
 adyabr@google.com
+alecmouri@google.com
 lpy@google.com
 sumir@google.com
diff --git a/graphics/composer/aidl/Android.bp b/graphics/composer/aidl/Android.bp
index 5f5b54e..2532a7a 100644
--- a/graphics/composer/aidl/Android.bp
+++ b/graphics/composer/aidl/Android.bp
@@ -55,20 +55,6 @@
     },
 }
 
-cc_library {
-    name: "android.hardware.graphics.composer3-translate-ndk",
-    vendor_available: true,
-    srcs: ["android/hardware/graphics/composer3/translate-ndk.cpp"],
-    shared_libs: [
-        "libbinder_ndk",
-        "libhidlbase",
-        "android.hardware.graphics.composer3-V1-ndk",
-        "android.hardware.graphics.composer@2.1",
-        "android.hardware.graphics.composer@2.4",
-    ],
-    export_include_dirs: ["include"],
-}
-
 cc_library_headers {
     name: "android.hardware.graphics.composer3-command-buffer",
     vendor_available: true,
@@ -88,3 +74,16 @@
     ],
     export_include_dirs: ["include"],
 }
+
+cc_test {
+    name: "android.hardware.graphics.composer3-hidl2aidl-asserts",
+    vendor_available: true,
+    srcs: ["android/hardware/graphics/composer3/Hidl2AidlAsserts.cpp"],
+    shared_libs: [
+        "libbinder_ndk",
+        "libhidlbase",
+        "android.hardware.graphics.composer3-V1-ndk",
+        "android.hardware.graphics.composer@2.1",
+        "android.hardware.graphics.composer@2.4",
+    ],
+}
diff --git a/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/ClockMonotonicTimestamp.aidl b/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/ClockMonotonicTimestamp.aidl
new file mode 100644
index 0000000..480a85c
--- /dev/null
+++ b/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/ClockMonotonicTimestamp.aidl
@@ -0,0 +1,38 @@
+/**
+ * Copyright (c) 2021, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.graphics.composer3;
+@VintfStability
+parcelable ClockMonotonicTimestamp {
+  long timestampNanos;
+}
diff --git a/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/Color.aidl b/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/Color.aidl
index 7733deb..8222909 100644
--- a/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/Color.aidl
+++ b/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/Color.aidl
@@ -34,8 +34,8 @@
 package android.hardware.graphics.composer3;
 @VintfStability
 parcelable Color {
-  byte r;
-  byte g;
-  byte b;
-  byte a;
+  float r;
+  float g;
+  float b;
+  float a;
 }
diff --git a/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/ColorTransformPayload.aidl b/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/ColorTransformPayload.aidl
deleted file mode 100644
index df07c9c..0000000
--- a/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/ColorTransformPayload.aidl
+++ /dev/null
@@ -1,39 +0,0 @@
-/**
- * Copyright (c) 2021, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-///////////////////////////////////////////////////////////////////////////////
-// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
-///////////////////////////////////////////////////////////////////////////////
-
-// This file is a snapshot of an AIDL file. Do not edit it manually. There are
-// two cases:
-// 1). this is a frozen version file - do not edit this in any case.
-// 2). this is a 'current' file. If you make a backwards compatible change to
-//     the interface (from the latest frozen version), the build system will
-//     prompt you to update this file with `m <name>-update-api`.
-//
-// You must not make a backward incompatible change to any AIDL file built
-// with the aidl_interface module type with versions property set. The module
-// type is used to build AIDL files in a way that they can be used across
-// independently updatable components of the system. If a device is shipped
-// with such a backward incompatible change, it has a high risk of breaking
-// later when a module using the interface is updated, e.g., Mainline modules.
-
-package android.hardware.graphics.composer3;
-@VintfStability
-parcelable ColorTransformPayload {
-  float[] matrix;
-  android.hardware.graphics.common.ColorTransform hint;
-}
diff --git a/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/DisplayBrightness.aidl b/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/DisplayBrightness.aidl
new file mode 100644
index 0000000..be623df
--- /dev/null
+++ b/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/DisplayBrightness.aidl
@@ -0,0 +1,38 @@
+/**
+ * Copyright 2021, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.graphics.composer3;
+@VintfStability
+parcelable DisplayBrightness {
+  float brightness;
+}
diff --git a/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/DisplayCapability.aidl b/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/DisplayCapability.aidl
index 9f5342e..fdf1100 100644
--- a/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/DisplayCapability.aidl
+++ b/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/DisplayCapability.aidl
@@ -41,4 +41,5 @@
   PROTECTED_CONTENTS = 4,
   AUTO_LOW_LATENCY_MODE = 5,
   SUSPEND = 6,
+  DISPLAY_DECORATION = 7,
 }
diff --git a/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/DisplayCommand.aidl b/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/DisplayCommand.aidl
index 2f5d00f..662240e 100644
--- a/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/DisplayCommand.aidl
+++ b/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/DisplayCommand.aidl
@@ -36,9 +36,11 @@
 parcelable DisplayCommand {
   long display;
   android.hardware.graphics.composer3.LayerCommand[] layers;
-  @nullable android.hardware.graphics.composer3.ColorTransformPayload colorTransform;
+  @nullable float[] colorTransformMatrix;
+  @nullable android.hardware.graphics.composer3.DisplayBrightness brightness;
   @nullable android.hardware.graphics.composer3.ClientTarget clientTarget;
   @nullable android.hardware.graphics.composer3.Buffer virtualDisplayOutputBuffer;
+  @nullable android.hardware.graphics.composer3.ClockMonotonicTimestamp expectedPresentTime;
   boolean validateDisplay;
   boolean acceptDisplayChanges;
   boolean presentDisplay;
diff --git a/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/FloatColor.aidl b/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/FloatColor.aidl
deleted file mode 100644
index faadf57..0000000
--- a/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/FloatColor.aidl
+++ /dev/null
@@ -1,41 +0,0 @@
-/**
- * Copyright (c) 2021, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-///////////////////////////////////////////////////////////////////////////////
-// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
-///////////////////////////////////////////////////////////////////////////////
-
-// This file is a snapshot of an AIDL file. Do not edit it manually. There are
-// two cases:
-// 1). this is a frozen version file - do not edit this in any case.
-// 2). this is a 'current' file. If you make a backwards compatible change to
-//     the interface (from the latest frozen version), the build system will
-//     prompt you to update this file with `m <name>-update-api`.
-//
-// You must not make a backward incompatible change to any AIDL file built
-// with the aidl_interface module type with versions property set. The module
-// type is used to build AIDL files in a way that they can be used across
-// independently updatable components of the system. If a device is shipped
-// with such a backward incompatible change, it has a high risk of breaking
-// later when a module using the interface is updated, e.g., Mainline modules.
-
-package android.hardware.graphics.composer3;
-@VintfStability
-parcelable FloatColor {
-  float r;
-  float g;
-  float b;
-  float a;
-}
diff --git a/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/GenericMetadata.aidl b/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/GenericMetadata.aidl
deleted file mode 100644
index c18529b..0000000
--- a/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/GenericMetadata.aidl
+++ /dev/null
@@ -1,39 +0,0 @@
-/**
- * Copyright (c) 2021, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-///////////////////////////////////////////////////////////////////////////////
-// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
-///////////////////////////////////////////////////////////////////////////////
-
-// This file is a snapshot of an AIDL file. Do not edit it manually. There are
-// two cases:
-// 1). this is a frozen version file - do not edit this in any case.
-// 2). this is a 'current' file. If you make a backwards compatible change to
-//     the interface (from the latest frozen version), the build system will
-//     prompt you to update this file with `m <name>-update-api`.
-//
-// You must not make a backward incompatible change to any AIDL file built
-// with the aidl_interface module type with versions property set. The module
-// type is used to build AIDL files in a way that they can be used across
-// independently updatable components of the system. If a device is shipped
-// with such a backward incompatible change, it has a high risk of breaking
-// later when a module using the interface is updated, e.g., Mainline modules.
-
-package android.hardware.graphics.composer3;
-@VintfStability
-parcelable GenericMetadata {
-  android.hardware.graphics.composer3.LayerGenericMetadataKey key;
-  byte[] value;
-}
diff --git a/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/HandleIndex.aidl b/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/HandleIndex.aidl
deleted file mode 100644
index b87870d..0000000
--- a/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/HandleIndex.aidl
+++ /dev/null
@@ -1,39 +0,0 @@
-/**
- * Copyright (c) 2021, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-///////////////////////////////////////////////////////////////////////////////
-// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
-///////////////////////////////////////////////////////////////////////////////
-
-// This file is a snapshot of an AIDL file. Do not edit it manually. There are
-// two cases:
-// 1). this is a frozen version file - do not edit this in any case.
-// 2). this is a 'current' file. If you make a backwards compatible change to
-//     the interface (from the latest frozen version), the build system will
-//     prompt you to update this file with `m <name>-update-api`.
-//
-// You must not make a backward incompatible change to any AIDL file built
-// with the aidl_interface module type with versions property set. The module
-// type is used to build AIDL files in a way that they can be used across
-// independently updatable components of the system. If a device is shipped
-// with such a backward incompatible change, it has a high risk of breaking
-// later when a module using the interface is updated, e.g., Mainline modules.
-
-package android.hardware.graphics.composer3;
-@Backing(type="int") @VintfStability
-enum HandleIndex {
-  EMPTY = -1,
-  CACHED = -2,
-}
diff --git a/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/IComposerClient.aidl b/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/IComposerClient.aidl
index 2bdbc9f..5593c57 100644
--- a/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/IComposerClient.aidl
+++ b/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/IComposerClient.aidl
@@ -51,25 +51,27 @@
   int getDisplayVsyncPeriod(long display);
   android.hardware.graphics.composer3.DisplayContentSample getDisplayedContentSample(long display, long maxFrames, long timestamp);
   android.hardware.graphics.composer3.DisplayContentSamplingAttributes getDisplayedContentSamplingAttributes(long display);
+  android.hardware.graphics.common.Transform getDisplayPhysicalOrientation(long display);
   android.hardware.graphics.composer3.HdrCapabilities getHdrCapabilities(long display);
-  android.hardware.graphics.composer3.LayerGenericMetadataKey[] getLayerGenericMetadataKeys();
   int getMaxVirtualDisplayCount();
   android.hardware.graphics.composer3.PerFrameMetadataKey[] getPerFrameMetadataKeys(long display);
   android.hardware.graphics.composer3.ReadbackBufferAttributes getReadbackBufferAttributes(long display);
-  ParcelFileDescriptor getReadbackBufferFence(long display);
+  @nullable ParcelFileDescriptor getReadbackBufferFence(long display);
   android.hardware.graphics.composer3.RenderIntent[] getRenderIntents(long display, android.hardware.graphics.composer3.ColorMode mode);
   android.hardware.graphics.composer3.ContentType[] getSupportedContentTypes(long display);
   void registerCallback(in android.hardware.graphics.composer3.IComposerCallback callback);
   void setActiveConfig(long display, int config);
   android.hardware.graphics.composer3.VsyncPeriodChangeTimeline setActiveConfigWithConstraints(long display, int config, in android.hardware.graphics.composer3.VsyncPeriodChangeConstraints vsyncPeriodChangeConstraints);
+  void setBootDisplayConfig(long display, int config);
+  void clearBootDisplayConfig(long display);
+  int getPreferredBootDisplayConfig(long display);
   void setAutoLowLatencyMode(long display, boolean on);
   void setClientTargetSlotCount(long display, int clientTargetSlotCount);
   void setColorMode(long display, android.hardware.graphics.composer3.ColorMode mode, android.hardware.graphics.composer3.RenderIntent intent);
   void setContentType(long display, android.hardware.graphics.composer3.ContentType type);
-  void setDisplayBrightness(long display, float brightness);
   void setDisplayedContentSamplingEnabled(long display, boolean enable, android.hardware.graphics.composer3.FormatColorComponent componentMask, long maxFrames);
   void setPowerMode(long display, android.hardware.graphics.composer3.PowerMode mode);
-  void setReadbackBuffer(long display, in android.hardware.common.NativeHandle buffer, in ParcelFileDescriptor releaseFence);
+  void setReadbackBuffer(long display, in android.hardware.common.NativeHandle buffer, in @nullable ParcelFileDescriptor releaseFence);
   void setVsyncEnabled(long display, boolean enabled);
   const int EX_BAD_CONFIG = 1;
   const int EX_BAD_DISPLAY = 2;
diff --git a/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/LayerCommand.aidl b/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/LayerCommand.aidl
index bad72fc..c1c0117 100644
--- a/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/LayerCommand.aidl
+++ b/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/LayerCommand.aidl
@@ -40,7 +40,6 @@
   @nullable android.hardware.graphics.common.Rect[] damage;
   @nullable android.hardware.graphics.composer3.ParcelableBlendMode blendMode;
   @nullable android.hardware.graphics.composer3.Color color;
-  @nullable android.hardware.graphics.composer3.FloatColor floatColor;
   @nullable android.hardware.graphics.composer3.ParcelableComposition composition;
   @nullable android.hardware.graphics.composer3.ParcelableDataspace dataspace;
   @nullable android.hardware.graphics.common.Rect displayFrame;
@@ -51,8 +50,8 @@
   @nullable android.hardware.graphics.common.Rect[] visibleRegion;
   @nullable android.hardware.graphics.composer3.ZOrder z;
   @nullable float[] colorTransform;
-  @nullable android.hardware.graphics.composer3.WhitePointNits whitePointNits;
-  @nullable android.hardware.graphics.composer3.GenericMetadata genericMetadata;
+  @nullable android.hardware.graphics.composer3.Luminance whitePointNits;
   @nullable android.hardware.graphics.composer3.PerFrameMetadata[] perFrameMetadata;
   @nullable android.hardware.graphics.composer3.PerFrameMetadataBlob[] perFrameMetadataBlob;
+  @nullable android.hardware.graphics.common.Rect[] blockingRegion;
 }
diff --git a/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/LayerGenericMetadataKey.aidl b/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/LayerGenericMetadataKey.aidl
deleted file mode 100644
index 73385d4..0000000
--- a/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/LayerGenericMetadataKey.aidl
+++ /dev/null
@@ -1,39 +0,0 @@
-/**
- * Copyright (c) 2021, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-///////////////////////////////////////////////////////////////////////////////
-// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
-///////////////////////////////////////////////////////////////////////////////
-
-// This file is a snapshot of an AIDL file. Do not edit it manually. There are
-// two cases:
-// 1). this is a frozen version file - do not edit this in any case.
-// 2). this is a 'current' file. If you make a backwards compatible change to
-//     the interface (from the latest frozen version), the build system will
-//     prompt you to update this file with `m <name>-update-api`.
-//
-// You must not make a backward incompatible change to any AIDL file built
-// with the aidl_interface module type with versions property set. The module
-// type is used to build AIDL files in a way that they can be used across
-// independently updatable components of the system. If a device is shipped
-// with such a backward incompatible change, it has a high risk of breaking
-// later when a module using the interface is updated, e.g., Mainline modules.
-
-package android.hardware.graphics.composer3;
-@VintfStability
-parcelable LayerGenericMetadataKey {
-  String name;
-  boolean mandatory;
-}
diff --git a/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/Luminance.aidl b/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/Luminance.aidl
new file mode 100644
index 0000000..adb49a8
--- /dev/null
+++ b/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/Luminance.aidl
@@ -0,0 +1,38 @@
+/**
+ * Copyright (c) 2021, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.graphics.composer3;
+@VintfStability
+parcelable Luminance {
+  float nits;
+}
diff --git a/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/PresentOrValidate.aidl b/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/PresentOrValidate.aidl
index 3514e53..e6ddeba 100644
--- a/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/PresentOrValidate.aidl
+++ b/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/PresentOrValidate.aidl
@@ -38,7 +38,7 @@
   android.hardware.graphics.composer3.PresentOrValidate.Result result;
   @VintfStability
   enum Result {
-    Presented = 0,
-    Validated = 1,
+    Validated = 0,
+    Presented = 1,
   }
 }
diff --git a/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/WhitePointNits.aidl b/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/WhitePointNits.aidl
deleted file mode 100644
index c3925d2..0000000
--- a/graphics/composer/aidl/aidl_api/android.hardware.graphics.composer3/current/android/hardware/graphics/composer3/WhitePointNits.aidl
+++ /dev/null
@@ -1,38 +0,0 @@
-/**
- * Copyright (c) 2021, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-///////////////////////////////////////////////////////////////////////////////
-// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
-///////////////////////////////////////////////////////////////////////////////
-
-// This file is a snapshot of an AIDL file. Do not edit it manually. There are
-// two cases:
-// 1). this is a frozen version file - do not edit this in any case.
-// 2). this is a 'current' file. If you make a backwards compatible change to
-//     the interface (from the latest frozen version), the build system will
-//     prompt you to update this file with `m <name>-update-api`.
-//
-// You must not make a backward incompatible change to any AIDL file built
-// with the aidl_interface module type with versions property set. The module
-// type is used to build AIDL files in a way that they can be used across
-// independently updatable components of the system. If a device is shipped
-// with such a backward incompatible change, it has a high risk of breaking
-// later when a module using the interface is updated, e.g., Mainline modules.
-
-package android.hardware.graphics.composer3;
-@VintfStability
-parcelable WhitePointNits {
-  float nits;
-}
diff --git a/graphics/composer/aidl/android/hardware/graphics/composer3/ClockMonotonicTimestamp.aidl b/graphics/composer/aidl/android/hardware/graphics/composer3/ClockMonotonicTimestamp.aidl
new file mode 100644
index 0000000..0cfd1c4
--- /dev/null
+++ b/graphics/composer/aidl/android/hardware/graphics/composer3/ClockMonotonicTimestamp.aidl
@@ -0,0 +1,25 @@
+/**
+ * Copyright (c) 2021, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.composer3;
+
+/**
+ * Represents a nanoseconds timestamp in CLOCK_MONOTONIC.
+ */
+@VintfStability
+parcelable ClockMonotonicTimestamp {
+    long timestampNanos;
+}
diff --git a/graphics/composer/aidl/android/hardware/graphics/composer3/Color.aidl b/graphics/composer/aidl/android/hardware/graphics/composer3/Color.aidl
index 979f677..151a854 100644
--- a/graphics/composer/aidl/android/hardware/graphics/composer3/Color.aidl
+++ b/graphics/composer/aidl/android/hardware/graphics/composer3/Color.aidl
@@ -16,10 +16,13 @@
 
 package android.hardware.graphics.composer3;
 
+/**
+ * Color representation as a floating point number in the range [0.0 - 1.0]
+ */
 @VintfStability
 parcelable Color {
-    byte r;
-    byte g;
-    byte b;
-    byte a;
+    float r;
+    float g;
+    float b;
+    float a;
 }
diff --git a/graphics/composer/aidl/android/hardware/graphics/composer3/ColorTransformPayload.aidl b/graphics/composer/aidl/android/hardware/graphics/composer3/ColorTransformPayload.aidl
deleted file mode 100644
index fc37dac..0000000
--- a/graphics/composer/aidl/android/hardware/graphics/composer3/ColorTransformPayload.aidl
+++ /dev/null
@@ -1,33 +0,0 @@
-/**
- * Copyright (c) 2021, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.hardware.graphics.composer3;
-
-import android.hardware.graphics.common.ColorTransform;
-
-@VintfStability
-parcelable ColorTransformPayload {
-    /**
-     * 4x4 transform matrix (16 floats) as described in DisplayCommand.colorTransform.
-     */
-    float[] matrix;
-
-    /**
-     * Hint value which may be used instead of the given matrix unless it
-     * is ColorTransform.ARBITRARY.
-     */
-    ColorTransform hint;
-}
diff --git a/graphics/composer/aidl/android/hardware/graphics/composer3/Composition.aidl b/graphics/composer/aidl/android/hardware/graphics/composer3/Composition.aidl
index 4947463..803de06 100644
--- a/graphics/composer/aidl/android/hardware/graphics/composer3/Composition.aidl
+++ b/graphics/composer/aidl/android/hardware/graphics/composer3/Composition.aidl
@@ -74,16 +74,17 @@
      */
     SIDEBAND = 5,
     /**
-     * A display decoration layer contains a buffer which is an 8 bit
-     * alpha mask. Pixels in the mask with an alpha of 0 (transparent) will
-     * show the content underneath, and pixels with an alpha of 255 will be
-     * be rendered in black. An alpha in between will show the content
-     * blended with black. This is useful, for example, to provide
+     * A display decoration layer contains a buffer which is used to provide
      * anti-aliasing on the cutout region/rounded corners on the top and
      * bottom of a display.
      *
+     * Pixels in the buffer with an alpha of 0 (transparent) will show the
+     * content underneath, and pixels with a max alpha value will be rendered in
+     * black. An alpha in between will show the underlying content blended with
+     * black.
+     *
      * Upon validateDisplay, the device may request a change from this type
-     * to CLIENT.
+     * to either DEVICE or CLIENT.
      */
     DISPLAY_DECORATION = 6,
 }
diff --git a/graphics/composer/aidl/android/hardware/graphics/composer3/DisplayBrightness.aidl b/graphics/composer/aidl/android/hardware/graphics/composer3/DisplayBrightness.aidl
new file mode 100644
index 0000000..f66b235
--- /dev/null
+++ b/graphics/composer/aidl/android/hardware/graphics/composer3/DisplayBrightness.aidl
@@ -0,0 +1,26 @@
+/**
+ * Copyright 2021, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.composer3;
+
+@VintfStability
+parcelable DisplayBrightness {
+    /**
+     * A number between 0.0f (minimum brightness) and 1.0f (maximum brightness), a negative value to
+     * turn the backlight off.
+     */
+    float brightness;
+}
diff --git a/graphics/composer/aidl/android/hardware/graphics/composer3/DisplayCapability.aidl b/graphics/composer/aidl/android/hardware/graphics/composer3/DisplayCapability.aidl
index eacf106..249fed0 100644
--- a/graphics/composer/aidl/android/hardware/graphics/composer3/DisplayCapability.aidl
+++ b/graphics/composer/aidl/android/hardware/graphics/composer3/DisplayCapability.aidl
@@ -75,4 +75,8 @@
      * PowerMode.ON_SUSPEND and PowerMode.DOZE_SUSPEND must be supported.
      */
     SUSPEND = 6,
+    /**
+     * Indicates that the display supports Composition.DISPLAY_DECORATION.
+     */
+    DISPLAY_DECORATION = 7,
 }
diff --git a/graphics/composer/aidl/android/hardware/graphics/composer3/DisplayCommand.aidl b/graphics/composer/aidl/android/hardware/graphics/composer3/DisplayCommand.aidl
index 21497c4..f1ce1a7 100644
--- a/graphics/composer/aidl/android/hardware/graphics/composer3/DisplayCommand.aidl
+++ b/graphics/composer/aidl/android/hardware/graphics/composer3/DisplayCommand.aidl
@@ -18,7 +18,8 @@
 
 import android.hardware.graphics.composer3.Buffer;
 import android.hardware.graphics.composer3.ClientTarget;
-import android.hardware.graphics.composer3.ColorTransformPayload;
+import android.hardware.graphics.composer3.ClockMonotonicTimestamp;
+import android.hardware.graphics.composer3.DisplayBrightness;
 import android.hardware.graphics.composer3.LayerCommand;
 
 @VintfStability
@@ -38,11 +39,7 @@
     /**
      * Sets a color transform which will be applied after composition.
      *
-     * If hint is not ColorTransform.ARBITRARY, then the device may use the
-     * hint to apply the desired color transform instead of using the color
-     * matrix directly.
-     *
-     * If the device is not capable of either using the hint or the matrix to
+     * If the device is not capable of either using the matrix to
      * apply the desired color transform, it must force all layers to client
      * composition during VALIDATE_DISPLAY.
      *
@@ -70,7 +67,30 @@
      * B_out = R_in * r.b + G_in * g.b + B_in * b.b + Tb
      *
      */
-    @nullable ColorTransformPayload colorTransform;
+    @nullable float[] colorTransformMatrix;
+
+    /**
+     * Sets the desired brightness of the display.
+     *
+     * Ideally, the brightness of the display will take effect within this frame so that it can be
+     * aligned with color transforms. Some display architectures may take multiple frames to apply
+     * the display brightness, for example when internally switching the display between multiple
+     * power modes to achieve higher luminance. In those cases, the underlying display panel's real
+     * brightness may not be applied atomically; however, layer dimming when mixing HDR and SDR
+     * content must be synchronized.
+     *
+     * As an illustrative example: suppose two layers have white
+     * points of 200 nits and 1000 nits respectively, the old display luminance is 200 nits, and the
+     * new display luminance is 1000 nits. If the new display luminance takes two frames to apply,
+     * then: In the first frame, there must not be any relative dimming of layers (treat both layers
+     * as 200 nits as the maximum luminance of the display is 200 nits). In the second frame, there
+     * dimming should be applied to ensure that the first layer does not become perceptually
+     * brighter during the transition.
+     *
+     * The display luminance must be updated by this command even if there is not pending validate
+     * or present command.
+     */
+    @nullable DisplayBrightness brightness;
 
     /**
      * Sets the buffer handle which will receive the output of client
@@ -115,6 +135,14 @@
     @nullable Buffer virtualDisplayOutputBuffer;
 
     /**
+     * Sets the expected present time to present the current content on screen.
+     * The implementation should try to present the display as close as possible
+     * to the given expectedPresentTime. If expectedPresentTime is 0, the
+     * implementation should present the display as soon as possible.
+     */
+    @nullable ClockMonotonicTimestamp expectedPresentTime;
+
+    /**
      * Instructs the device to inspect all of the layer state and determine if
      * there are any composition type changes necessary before presenting the
      * display. Permitted changes are described in the definition of
diff --git a/graphics/composer/aidl/android/hardware/graphics/composer3/FloatColor.aidl b/graphics/composer/aidl/android/hardware/graphics/composer3/FloatColor.aidl
deleted file mode 100644
index a0a1d4b..0000000
--- a/graphics/composer/aidl/android/hardware/graphics/composer3/FloatColor.aidl
+++ /dev/null
@@ -1,29 +0,0 @@
-/**
- * Copyright (c) 2021, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.hardware.graphics.composer3;
-
-/**
- * Color representation as a floating point number in the range [0.0 - 1.0]
- */
-
-@VintfStability
-parcelable FloatColor {
-    float r;
-    float g;
-    float b;
-    float a;
-}
diff --git a/graphics/composer/aidl/android/hardware/graphics/composer3/GenericMetadata.aidl b/graphics/composer/aidl/android/hardware/graphics/composer3/GenericMetadata.aidl
deleted file mode 100644
index d0254dd..0000000
--- a/graphics/composer/aidl/android/hardware/graphics/composer3/GenericMetadata.aidl
+++ /dev/null
@@ -1,33 +0,0 @@
-/**
- * Copyright (c) 2021, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.hardware.graphics.composer3;
-
-import android.hardware.graphics.composer3.LayerGenericMetadataKey;
-
-@VintfStability
-parcelable GenericMetadata {
-    /**
-     * Indicates which metadata value should be set.
-     */
-    LayerGenericMetadataKey key;
-    /**
-     * The binary representation of a AIDL struct corresponding to
-     * the key as described above.
-     * TODO(b/209691612): revisit the use of byte[]
-     */
-    byte[] value;
-}
diff --git a/graphics/composer/aidl/android/hardware/graphics/composer3/HandleIndex.aidl b/graphics/composer/aidl/android/hardware/graphics/composer3/HandleIndex.aidl
deleted file mode 100644
index 0a93c9e..0000000
--- a/graphics/composer/aidl/android/hardware/graphics/composer3/HandleIndex.aidl
+++ /dev/null
@@ -1,33 +0,0 @@
-/**
- * Copyright (c) 2021, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.hardware.graphics.composer3;
-
-/**
- * Special index values (always negative) for command queue commands.
- */
-@VintfStability
-@Backing(type="int")
-enum HandleIndex {
-    /**
-     * No handle
-     */
-    EMPTY = -1,
-    /**
-     * Use cached handle
-     */
-    CACHED = -2,
-}
diff --git a/graphics/composer/aidl/android/hardware/graphics/composer3/Hidl2AidlAsserts.cpp b/graphics/composer/aidl/android/hardware/graphics/composer3/Hidl2AidlAsserts.cpp
new file mode 100644
index 0000000..d2cabff
--- /dev/null
+++ b/graphics/composer/aidl/android/hardware/graphics/composer3/Hidl2AidlAsserts.cpp
@@ -0,0 +1,353 @@
+/**
+ * Copyright (c) 2021, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "aidl/android/hardware/graphics/common/BlendMode.h"
+#include "aidl/android/hardware/graphics/common/FRect.h"
+#include "aidl/android/hardware/graphics/common/Rect.h"
+#include "aidl/android/hardware/graphics/composer3/Capability.h"
+#include "aidl/android/hardware/graphics/composer3/ClientTargetProperty.h"
+#include "aidl/android/hardware/graphics/composer3/Color.h"
+#include "aidl/android/hardware/graphics/composer3/Composition.h"
+#include "aidl/android/hardware/graphics/composer3/ContentType.h"
+#include "aidl/android/hardware/graphics/composer3/DisplayAttribute.h"
+#include "aidl/android/hardware/graphics/composer3/DisplayCapability.h"
+#include "aidl/android/hardware/graphics/composer3/DisplayConnectionType.h"
+#include "aidl/android/hardware/graphics/composer3/FormatColorComponent.h"
+#include "aidl/android/hardware/graphics/composer3/IComposer.h"
+#include "aidl/android/hardware/graphics/composer3/PerFrameMetadata.h"
+#include "aidl/android/hardware/graphics/composer3/PerFrameMetadataBlob.h"
+#include "aidl/android/hardware/graphics/composer3/PerFrameMetadataKey.h"
+#include "aidl/android/hardware/graphics/composer3/PowerMode.h"
+#include "aidl/android/hardware/graphics/composer3/VsyncPeriodChangeConstraints.h"
+#include "aidl/android/hardware/graphics/composer3/VsyncPeriodChangeTimeline.h"
+#include "android/hardware/graphics/composer/2.1/IComposer.h"
+#include "android/hardware/graphics/composer/2.1/IComposerCallback.h"
+#include "android/hardware/graphics/composer/2.1/IComposerClient.h"
+#include "android/hardware/graphics/composer/2.2/IComposerClient.h"
+#include "android/hardware/graphics/composer/2.3/IComposerClient.h"
+#include "android/hardware/graphics/composer/2.4/IComposerClient.h"
+#include "android/hardware/graphics/composer/2.4/types.h"
+
+namespace android::h2a {
+
+static_assert(
+        aidl::android::hardware::graphics::composer3::IComposer::EX_NO_RESOURCES ==
+        static_cast<int32_t>(::android::hardware::graphics::composer::V2_4::Error::NO_RESOURCES));
+
+static_assert(
+        aidl::android::hardware::graphics::composer3::IComposerClient::EX_BAD_CONFIG ==
+        static_cast<int32_t>(::android::hardware::graphics::composer::V2_4::Error::BAD_CONFIG));
+static_assert(
+        aidl::android::hardware::graphics::composer3::IComposerClient::EX_BAD_DISPLAY ==
+        static_cast<int32_t>(::android::hardware::graphics::composer::V2_4::Error::BAD_DISPLAY));
+static_assert(
+        aidl::android::hardware::graphics::composer3::IComposerClient::EX_BAD_LAYER ==
+        static_cast<int32_t>(::android::hardware::graphics::composer::V2_4::Error::BAD_LAYER));
+static_assert(
+        aidl::android::hardware::graphics::composer3::IComposerClient::EX_BAD_PARAMETER ==
+        static_cast<int32_t>(::android::hardware::graphics::composer::V2_4::Error::BAD_PARAMETER));
+static_assert(
+        aidl::android::hardware::graphics::composer3::IComposerClient::EX_NO_RESOURCES ==
+        static_cast<int32_t>(::android::hardware::graphics::composer::V2_4::Error::NO_RESOURCES));
+static_assert(
+        aidl::android::hardware::graphics::composer3::IComposerClient::EX_NOT_VALIDATED ==
+        static_cast<int32_t>(::android::hardware::graphics::composer::V2_4::Error::NOT_VALIDATED));
+static_assert(
+        aidl::android::hardware::graphics::composer3::IComposerClient::EX_UNSUPPORTED ==
+        static_cast<int32_t>(::android::hardware::graphics::composer::V2_4::Error::UNSUPPORTED));
+static_assert(
+        aidl::android::hardware::graphics::composer3::IComposerClient::EX_SEAMLESS_NOT_ALLOWED ==
+        static_cast<int32_t>(
+                ::android::hardware::graphics::composer::V2_4::Error::SEAMLESS_NOT_ALLOWED));
+static_assert(
+        aidl::android::hardware::graphics::composer3::IComposerClient::EX_SEAMLESS_NOT_POSSIBLE ==
+        static_cast<int32_t>(
+                ::android::hardware::graphics::composer::V2_4::Error::SEAMLESS_NOT_POSSIBLE));
+
+static_assert(
+        aidl::android::hardware::graphics::composer3::Capability::INVALID ==
+        static_cast<aidl::android::hardware::graphics::composer3::Capability>(
+                ::android::hardware::graphics::composer::V2_1::IComposer::Capability::INVALID));
+static_assert(aidl::android::hardware::graphics::composer3::Capability::SIDEBAND_STREAM ==
+              static_cast<aidl::android::hardware::graphics::composer3::Capability>(
+                      ::android::hardware::graphics::composer::V2_1::IComposer::Capability::
+                              SIDEBAND_STREAM));
+static_assert(
+        aidl::android::hardware::graphics::composer3::Capability::SKIP_CLIENT_COLOR_TRANSFORM ==
+        static_cast<aidl::android::hardware::graphics::composer3::Capability>(
+                ::android::hardware::graphics::composer::V2_1::IComposer::Capability::
+                        SKIP_CLIENT_COLOR_TRANSFORM));
+static_assert(
+        aidl::android::hardware::graphics::composer3::Capability::PRESENT_FENCE_IS_NOT_RELIABLE ==
+        static_cast<aidl::android::hardware::graphics::composer3::Capability>(
+                ::android::hardware::graphics::composer::V2_1::IComposer::Capability::
+                        PRESENT_FENCE_IS_NOT_RELIABLE));
+// HWC2_CAPABILITY_SKIP_VALIDATE was never defined for HIDL, so we just hardcode its value
+static_assert(aidl::android::hardware::graphics::composer3::Capability::SKIP_VALIDATE ==
+              static_cast<aidl::android::hardware::graphics::composer3::Capability>(4));
+
+static_assert(aidl::android::hardware::graphics::composer3::DisplayRequest::LayerRequest::
+                      CLEAR_CLIENT_TARGET ==
+              static_cast<int>(::android::hardware::graphics::composer::V2_1::IComposerClient::
+                                       LayerRequest::CLEAR_CLIENT_TARGET));
+
+static_assert(aidl::android::hardware::graphics::common::BlendMode::INVALID ==
+              static_cast<aidl::android::hardware::graphics::common::BlendMode>(
+                      ::android::hardware::graphics::composer::V2_1::IComposerClient::BlendMode::
+                              INVALID));
+static_assert(
+        aidl::android::hardware::graphics::common::BlendMode::NONE ==
+        static_cast<aidl::android::hardware::graphics::common::BlendMode>(
+                ::android::hardware::graphics::composer::V2_1::IComposerClient::BlendMode::NONE));
+static_assert(aidl::android::hardware::graphics::common::BlendMode::PREMULTIPLIED ==
+              static_cast<aidl::android::hardware::graphics::common::BlendMode>(
+                      ::android::hardware::graphics::composer::V2_1::IComposerClient::BlendMode::
+                              PREMULTIPLIED));
+static_assert(aidl::android::hardware::graphics::common::BlendMode::COVERAGE ==
+              static_cast<aidl::android::hardware::graphics::common::BlendMode>(
+                      ::android::hardware::graphics::composer::V2_1::IComposerClient::BlendMode::
+                              COVERAGE));
+
+static_assert(aidl::android::hardware::graphics::composer3::Composition::INVALID ==
+              static_cast<aidl::android::hardware::graphics::composer3::Composition>(
+                      ::android::hardware::graphics::composer::V2_1::IComposerClient::Composition::
+                              INVALID));
+static_assert(aidl::android::hardware::graphics::composer3::Composition::CLIENT ==
+              static_cast<aidl::android::hardware::graphics::composer3::Composition>(
+                      ::android::hardware::graphics::composer::V2_1::IComposerClient::Composition::
+                              CLIENT));
+static_assert(aidl::android::hardware::graphics::composer3::Composition::DEVICE ==
+              static_cast<aidl::android::hardware::graphics::composer3::Composition>(
+                      ::android::hardware::graphics::composer::V2_1::IComposerClient::Composition::
+                              DEVICE));
+static_assert(aidl::android::hardware::graphics::composer3::Composition::SOLID_COLOR ==
+              static_cast<aidl::android::hardware::graphics::composer3::Composition>(
+                      ::android::hardware::graphics::composer::V2_1::IComposerClient::Composition::
+                              SOLID_COLOR));
+static_assert(aidl::android::hardware::graphics::composer3::Composition::CURSOR ==
+              static_cast<aidl::android::hardware::graphics::composer3::Composition>(
+                      ::android::hardware::graphics::composer::V2_1::IComposerClient::Composition::
+                              CURSOR));
+static_assert(aidl::android::hardware::graphics::composer3::Composition::SIDEBAND ==
+              static_cast<aidl::android::hardware::graphics::composer3::Composition>(
+                      ::android::hardware::graphics::composer::V2_1::IComposerClient::Composition::
+                              SIDEBAND));
+
+static_assert(aidl::android::hardware::graphics::composer3::DisplayRequest::FLIP_CLIENT_TARGET ==
+              static_cast<int>(::android::hardware::graphics::composer::V2_1::IComposerClient::
+                                       DisplayRequest::FLIP_CLIENT_TARGET));
+static_assert(aidl::android::hardware::graphics::composer3::DisplayRequest::
+                      WRITE_CLIENT_TARGET_TO_OUTPUT ==
+              static_cast<int>(::android::hardware::graphics::composer::V2_1::IComposerClient::
+                                       DisplayRequest::WRITE_CLIENT_TARGET_TO_OUTPUT));
+
+static_assert(
+        aidl::android::hardware::graphics::composer3::PowerMode::OFF ==
+        static_cast<aidl::android::hardware::graphics::composer3::PowerMode>(
+                ::android::hardware::graphics::composer::V2_2::IComposerClient::PowerMode::OFF));
+static_assert(
+        aidl::android::hardware::graphics::composer3::PowerMode::DOZE ==
+        static_cast<aidl::android::hardware::graphics::composer3::PowerMode>(
+                ::android::hardware::graphics::composer::V2_2::IComposerClient::PowerMode::DOZE));
+static_assert(aidl::android::hardware::graphics::composer3::PowerMode::DOZE_SUSPEND ==
+              static_cast<aidl::android::hardware::graphics::composer3::PowerMode>(
+                      ::android::hardware::graphics::composer::V2_2::IComposerClient::PowerMode::
+                              DOZE_SUSPEND));
+static_assert(
+        aidl::android::hardware::graphics::composer3::PowerMode::ON ==
+        static_cast<aidl::android::hardware::graphics::composer3::PowerMode>(
+                ::android::hardware::graphics::composer::V2_2::IComposerClient::PowerMode::ON));
+static_assert(aidl::android::hardware::graphics::composer3::PowerMode::ON_SUSPEND ==
+              static_cast<aidl::android::hardware::graphics::composer3::PowerMode>(
+                      ::android::hardware::graphics::composer::V2_2::IComposerClient::PowerMode::
+                              ON_SUSPEND));
+
+static_assert(aidl::android::hardware::graphics::composer3::DisplayCapability::INVALID ==
+              static_cast<aidl::android::hardware::graphics::composer3::DisplayCapability>(
+                      ::android::hardware::graphics::composer::V2_4::IComposerClient::
+                              DisplayCapability::INVALID));
+static_assert(aidl::android::hardware::graphics::composer3::DisplayCapability::
+                      SKIP_CLIENT_COLOR_TRANSFORM ==
+              static_cast<aidl::android::hardware::graphics::composer3::DisplayCapability>(
+                      ::android::hardware::graphics::composer::V2_4::IComposerClient::
+                              DisplayCapability::SKIP_CLIENT_COLOR_TRANSFORM));
+static_assert(aidl::android::hardware::graphics::composer3::DisplayCapability::DOZE ==
+              static_cast<aidl::android::hardware::graphics::composer3::DisplayCapability>(
+                      ::android::hardware::graphics::composer::V2_4::IComposerClient::
+                              DisplayCapability::DOZE));
+static_assert(aidl::android::hardware::graphics::composer3::DisplayCapability::BRIGHTNESS ==
+              static_cast<aidl::android::hardware::graphics::composer3::DisplayCapability>(
+                      ::android::hardware::graphics::composer::V2_4::IComposerClient::
+                              DisplayCapability::BRIGHTNESS));
+static_assert(aidl::android::hardware::graphics::composer3::DisplayCapability::PROTECTED_CONTENTS ==
+              static_cast<aidl::android::hardware::graphics::composer3::DisplayCapability>(
+                      ::android::hardware::graphics::composer::V2_4::IComposerClient::
+                              DisplayCapability::PROTECTED_CONTENTS));
+static_assert(
+        aidl::android::hardware::graphics::composer3::DisplayCapability::AUTO_LOW_LATENCY_MODE ==
+        static_cast<aidl::android::hardware::graphics::composer3::DisplayCapability>(
+                ::android::hardware::graphics::composer::V2_4::IComposerClient::DisplayCapability::
+                        AUTO_LOW_LATENCY_MODE));
+
+static_assert(aidl::android::hardware::graphics::composer3::DisplayAttribute::INVALID ==
+              static_cast<aidl::android::hardware::graphics::composer3::DisplayAttribute>(
+                      ::android::hardware::graphics::composer::V2_4::IComposerClient::Attribute::
+                              INVALID));
+static_assert(
+        aidl::android::hardware::graphics::composer3::DisplayAttribute::WIDTH ==
+        static_cast<aidl::android::hardware::graphics::composer3::DisplayAttribute>(
+                ::android::hardware::graphics::composer::V2_4::IComposerClient::Attribute::WIDTH));
+static_assert(
+        aidl::android::hardware::graphics::composer3::DisplayAttribute::HEIGHT ==
+        static_cast<aidl::android::hardware::graphics::composer3::DisplayAttribute>(
+                ::android::hardware::graphics::composer::V2_4::IComposerClient::Attribute::HEIGHT));
+static_assert(aidl::android::hardware::graphics::composer3::DisplayAttribute::VSYNC_PERIOD ==
+              static_cast<aidl::android::hardware::graphics::composer3::DisplayAttribute>(
+                      ::android::hardware::graphics::composer::V2_4::IComposerClient::Attribute::
+                              VSYNC_PERIOD));
+static_assert(
+        aidl::android::hardware::graphics::composer3::DisplayAttribute::DPI_X ==
+        static_cast<aidl::android::hardware::graphics::composer3::DisplayAttribute>(
+                ::android::hardware::graphics::composer::V2_4::IComposerClient::Attribute::DPI_X));
+static_assert(
+        aidl::android::hardware::graphics::composer3::DisplayAttribute::DPI_Y ==
+        static_cast<aidl::android::hardware::graphics::composer3::DisplayAttribute>(
+                ::android::hardware::graphics::composer::V2_4::IComposerClient::Attribute::DPI_Y));
+static_assert(aidl::android::hardware::graphics::composer3::DisplayAttribute::CONFIG_GROUP ==
+              static_cast<aidl::android::hardware::graphics::composer3::DisplayAttribute>(
+                      ::android::hardware::graphics::composer::V2_4::IComposerClient::Attribute::
+                              CONFIG_GROUP));
+
+static_assert(aidl::android::hardware::graphics::composer3::DisplayConnectionType::INTERNAL ==
+              static_cast<aidl::android::hardware::graphics::composer3::DisplayConnectionType>(
+                      ::android::hardware::graphics::composer::V2_4::IComposerClient::
+                              DisplayConnectionType::INTERNAL));
+static_assert(aidl::android::hardware::graphics::composer3::DisplayConnectionType::EXTERNAL ==
+              static_cast<aidl::android::hardware::graphics::composer3::DisplayConnectionType>(
+                      ::android::hardware::graphics::composer::V2_4::IComposerClient::
+                              DisplayConnectionType::EXTERNAL));
+
+static_assert(
+        aidl::android::hardware::graphics::composer3::PerFrameMetadataKey::DISPLAY_RED_PRIMARY_X ==
+        static_cast<aidl::android::hardware::graphics::composer3::PerFrameMetadataKey>(
+                ::android::hardware::graphics::composer::V2_3::IComposerClient::
+                        PerFrameMetadataKey::DISPLAY_RED_PRIMARY_X));
+static_assert(
+        aidl::android::hardware::graphics::composer3::PerFrameMetadataKey::DISPLAY_RED_PRIMARY_Y ==
+        static_cast<aidl::android::hardware::graphics::composer3::PerFrameMetadataKey>(
+                ::android::hardware::graphics::composer::V2_3::IComposerClient::
+                        PerFrameMetadataKey::DISPLAY_RED_PRIMARY_Y));
+static_assert(aidl::android::hardware::graphics::composer3::PerFrameMetadataKey::
+                      DISPLAY_GREEN_PRIMARY_X ==
+              static_cast<aidl::android::hardware::graphics::composer3::PerFrameMetadataKey>(
+                      ::android::hardware::graphics::composer::V2_3::IComposerClient::
+                              PerFrameMetadataKey::DISPLAY_GREEN_PRIMARY_X));
+static_assert(aidl::android::hardware::graphics::composer3::PerFrameMetadataKey::
+                      DISPLAY_GREEN_PRIMARY_Y ==
+              static_cast<aidl::android::hardware::graphics::composer3::PerFrameMetadataKey>(
+                      ::android::hardware::graphics::composer::V2_3::IComposerClient::
+                              PerFrameMetadataKey::DISPLAY_GREEN_PRIMARY_Y));
+static_assert(
+        aidl::android::hardware::graphics::composer3::PerFrameMetadataKey::DISPLAY_BLUE_PRIMARY_X ==
+        static_cast<aidl::android::hardware::graphics::composer3::PerFrameMetadataKey>(
+                ::android::hardware::graphics::composer::V2_3::IComposerClient::
+                        PerFrameMetadataKey::DISPLAY_BLUE_PRIMARY_X));
+static_assert(
+        aidl::android::hardware::graphics::composer3::PerFrameMetadataKey::DISPLAY_BLUE_PRIMARY_Y ==
+        static_cast<aidl::android::hardware::graphics::composer3::PerFrameMetadataKey>(
+                ::android::hardware::graphics::composer::V2_3::IComposerClient::
+                        PerFrameMetadataKey::DISPLAY_BLUE_PRIMARY_Y));
+static_assert(aidl::android::hardware::graphics::composer3::PerFrameMetadataKey::WHITE_POINT_X ==
+              static_cast<aidl::android::hardware::graphics::composer3::PerFrameMetadataKey>(
+                      ::android::hardware::graphics::composer::V2_3::IComposerClient::
+                              PerFrameMetadataKey::WHITE_POINT_X));
+static_assert(aidl::android::hardware::graphics::composer3::PerFrameMetadataKey::WHITE_POINT_Y ==
+              static_cast<aidl::android::hardware::graphics::composer3::PerFrameMetadataKey>(
+                      ::android::hardware::graphics::composer::V2_3::IComposerClient::
+                              PerFrameMetadataKey::WHITE_POINT_Y));
+static_assert(aidl::android::hardware::graphics::composer3::PerFrameMetadataKey::MAX_LUMINANCE ==
+              static_cast<aidl::android::hardware::graphics::composer3::PerFrameMetadataKey>(
+                      ::android::hardware::graphics::composer::V2_3::IComposerClient::
+                              PerFrameMetadataKey::MAX_LUMINANCE));
+static_assert(aidl::android::hardware::graphics::composer3::PerFrameMetadataKey::MIN_LUMINANCE ==
+              static_cast<aidl::android::hardware::graphics::composer3::PerFrameMetadataKey>(
+                      ::android::hardware::graphics::composer::V2_3::IComposerClient::
+                              PerFrameMetadataKey::MIN_LUMINANCE));
+static_assert(aidl::android::hardware::graphics::composer3::PerFrameMetadataKey::
+                      MAX_CONTENT_LIGHT_LEVEL ==
+              static_cast<aidl::android::hardware::graphics::composer3::PerFrameMetadataKey>(
+                      ::android::hardware::graphics::composer::V2_3::IComposerClient::
+                              PerFrameMetadataKey::MAX_CONTENT_LIGHT_LEVEL));
+static_assert(aidl::android::hardware::graphics::composer3::PerFrameMetadataKey::
+                      MAX_FRAME_AVERAGE_LIGHT_LEVEL ==
+              static_cast<aidl::android::hardware::graphics::composer3::PerFrameMetadataKey>(
+                      ::android::hardware::graphics::composer::V2_3::IComposerClient::
+                              PerFrameMetadataKey::MAX_FRAME_AVERAGE_LIGHT_LEVEL));
+static_assert(aidl::android::hardware::graphics::composer3::PerFrameMetadataKey::HDR10_PLUS_SEI ==
+              static_cast<aidl::android::hardware::graphics::composer3::PerFrameMetadataKey>(
+                      ::android::hardware::graphics::composer::V2_3::IComposerClient::
+                              PerFrameMetadataKey::HDR10_PLUS_SEI));
+
+static_assert(
+        aidl::android::hardware::graphics::composer3::FormatColorComponent::FORMAT_COMPONENT_0 ==
+        static_cast<aidl::android::hardware::graphics::composer3::FormatColorComponent>(
+                ::android::hardware::graphics::composer::V2_3::IComposerClient::
+                        FormatColorComponent::FORMAT_COMPONENT_0));
+static_assert(
+        aidl::android::hardware::graphics::composer3::FormatColorComponent::FORMAT_COMPONENT_1 ==
+        static_cast<aidl::android::hardware::graphics::composer3::FormatColorComponent>(
+                ::android::hardware::graphics::composer::V2_3::IComposerClient::
+                        FormatColorComponent::FORMAT_COMPONENT_1));
+static_assert(
+        aidl::android::hardware::graphics::composer3::FormatColorComponent::FORMAT_COMPONENT_2 ==
+        static_cast<aidl::android::hardware::graphics::composer3::FormatColorComponent>(
+                ::android::hardware::graphics::composer::V2_3::IComposerClient::
+                        FormatColorComponent::FORMAT_COMPONENT_2));
+static_assert(
+        aidl::android::hardware::graphics::composer3::FormatColorComponent::FORMAT_COMPONENT_3 ==
+        static_cast<aidl::android::hardware::graphics::composer3::FormatColorComponent>(
+                ::android::hardware::graphics::composer::V2_3::IComposerClient::
+                        FormatColorComponent::FORMAT_COMPONENT_3));
+
+static_assert(
+        aidl::android::hardware::graphics::composer3::ContentType::NONE ==
+        static_cast<aidl::android::hardware::graphics::composer3::ContentType>(
+                ::android::hardware::graphics::composer::V2_4::IComposerClient::ContentType::NONE));
+static_assert(aidl::android::hardware::graphics::composer3::ContentType::GRAPHICS ==
+              static_cast<aidl::android::hardware::graphics::composer3::ContentType>(
+                      ::android::hardware::graphics::composer::V2_4::IComposerClient::ContentType::
+                              GRAPHICS));
+static_assert(aidl::android::hardware::graphics::composer3::ContentType::PHOTO ==
+              static_cast<aidl::android::hardware::graphics::composer3::ContentType>(
+                      ::android::hardware::graphics::composer::V2_4::IComposerClient::ContentType::
+                              PHOTO));
+static_assert(aidl::android::hardware::graphics::composer3::ContentType::CINEMA ==
+              static_cast<aidl::android::hardware::graphics::composer3::ContentType>(
+                      ::android::hardware::graphics::composer::V2_4::IComposerClient::ContentType::
+                              CINEMA));
+static_assert(
+        aidl::android::hardware::graphics::composer3::ContentType::GAME ==
+        static_cast<aidl::android::hardware::graphics::composer3::ContentType>(
+                ::android::hardware::graphics::composer::V2_4::IComposerClient::ContentType::GAME));
+
+static_assert(
+        aidl::android::hardware::graphics::composer3::PresentOrValidate::Result::Presented ==
+        static_cast<aidl::android::hardware::graphics::composer3::PresentOrValidate::Result>(1));
+static_assert(
+        aidl::android::hardware::graphics::composer3::PresentOrValidate::Result::Validated ==
+        static_cast<aidl::android::hardware::graphics::composer3::PresentOrValidate::Result>(0));
+
+}  // namespace android::h2a
diff --git a/graphics/composer/aidl/android/hardware/graphics/composer3/IComposerClient.aidl b/graphics/composer/aidl/android/hardware/graphics/composer3/IComposerClient.aidl
index 28bdb2c..c86b9bd 100644
--- a/graphics/composer/aidl/android/hardware/graphics/composer3/IComposerClient.aidl
+++ b/graphics/composer/aidl/android/hardware/graphics/composer3/IComposerClient.aidl
@@ -16,6 +16,7 @@
 
 package android.hardware.graphics.composer3;
 
+import android.hardware.graphics.common.Transform;
 import android.hardware.graphics.composer3.ClientTargetProperty;
 import android.hardware.graphics.composer3.ColorMode;
 import android.hardware.graphics.composer3.CommandResultPayload;
@@ -30,7 +31,6 @@
 import android.hardware.graphics.composer3.FormatColorComponent;
 import android.hardware.graphics.composer3.HdrCapabilities;
 import android.hardware.graphics.composer3.IComposerCallback;
-import android.hardware.graphics.composer3.LayerGenericMetadataKey;
 import android.hardware.graphics.composer3.PerFrameMetadataKey;
 import android.hardware.graphics.composer3.PowerMode;
 import android.hardware.graphics.composer3.ReadbackBufferAttributes;
@@ -355,6 +355,23 @@
     DisplayContentSamplingAttributes getDisplayedContentSamplingAttributes(long display);
 
     /**
+     * Queries the physical orientation of a display. Orientation 'Transform::NONE'
+     * represents a display that doesn't require any transformation on layers
+     * to be presented at their natural orientation.
+     *
+     * @param display is the display where the physical orientation is queried.
+     *
+     * @return is one of the below values:
+     *         Transform::NONE
+     *         Transform::ROT_90
+     *         Transform::ROT_180
+     *         Transform::ROT_270
+     *
+     * @exception EX_BAD_DISPLAY when an invalid display was passed in.
+     */
+    Transform getDisplayPhysicalOrientation(long display);
+
+    /**
      * Returns the high dynamic range (HDR) capabilities of the given display,
      * which are invariant with regard to the active configuration.
      *
@@ -369,20 +386,6 @@
     HdrCapabilities getHdrCapabilities(long display);
 
     /**
-     * Retrieves the set of keys that may be passed into setLayerGenericMetadata
-     *
-     * Key names must meet the following requirements:
-     * - Must be specified in reverse domain name notation
-     * - Must not start with 'com.android' or 'android'
-     * - Must be unique within the returned vector
-     * - Must correspond to a matching HIDL struct type, which defines the
-     *   structure of its values. For example, the key 'com.example.V1-3.Foo'
-     *   should correspond to a value of type com.example@1.3::Foo, which is
-     *   defined in a vendor HAL extension
-     */
-    LayerGenericMetadataKey[] getLayerGenericMetadataKeys();
-
-    /**
      * Returns the maximum number of virtual displays supported by this device
      * (which may be 0). The client must not attempt to create more than this
      * many virtual displays on this device. This number must not change for
@@ -479,7 +482,7 @@
      *   getReadbackBufferAttributes
      *   setReadbackBuffer
      */
-    ParcelFileDescriptor getReadbackBufferFence(long display);
+    @nullable ParcelFileDescriptor getReadbackBufferFence(long display);
 
     /**
      * Returns the render intents supported by the specified display and color
@@ -564,6 +567,58 @@
             long display, int config, in VsyncPeriodChangeConstraints vsyncPeriodChangeConstraints);
 
     /**
+     * Sets the display config in which the device boots.
+     *
+     * If the device is unable to boot in this config for any reason (example HDMI display changed),
+     * the implementation should try to find a config which matches the resolution and refresh-rate
+     * of this config. If no such config exists, the implementation's preferred display config
+     * should be used.
+     *
+     * @param display is the display for which the boot config is set.
+     * @param config is the new boot config for the display.
+     *
+     * @exception EX_BAD_DISPLAY when an invalid display handle was passed in.
+     * @exception EX_BAD_CONFIG when an invalid config id was passed in.
+     *
+     * @see getDisplayConfigs
+     * @see clearBootDisplayConfig
+     * @see getPreferredBootDisplayConfig
+     */
+    void setBootDisplayConfig(long display, int config);
+
+    /**
+     * Clears the boot display config.
+     *
+     * The device should boot in the implementation's preferred display config.
+     *
+     * @param display is the display for which the cached boot config is cleared.
+     *
+     * @exception EX_BAD_DISPLAY when an invalid display handle was passed in.
+     *
+     * @see getDisplayConfigs
+     * @see setBootDisplayConfig
+     * @see getPreferredBootDisplayConfig
+     */
+    void clearBootDisplayConfig(long display);
+
+    /**
+     * Returns the implementation's preferred display config.
+     *
+     * This is the display config used by the implementation at boot time, if the boot display
+     * config has not been requested yet, or if it has been previously cleared.
+     *
+     * @param display is the display to which the preferred config is queried.
+     * @return the implementation's preferred display config.
+     *
+     * @exception EX_BAD_DISPLAY when an invalid display handle was passed in.
+     *
+     * @see getDisplayConfigs
+     * @see setBootDisplayConfig
+     * @see clearBootDisplayConfig
+     */
+    int getPreferredBootDisplayConfig(long display);
+
+    /**
      * Requests the display to enable/disable its low latency mode.
      *
      * If the display is connected via HDMI 2.1, then Auto Low Latency Mode should be triggered. If
@@ -631,25 +686,6 @@
     void setContentType(long display, ContentType type);
 
     /**
-     * Sets the brightness of a display.
-     *
-     * Ideally, the brightness change should take effect in the next frame post (so that it can be
-     * aligned with color transforms).
-     *
-     * @param display
-     *      The display whose brightness is set.
-     * @param brightness
-     *      A number between 0.0f (minimum brightness) and 1.0f (maximum brightness), or -1.0 to
-     *      turn the backlight off.
-     *
-     * @exception EX_BAD_DISPLAY   when the display is invalid, or
-     * @exception EX_UNSUPPORTED   when brightness operations are not supported, or
-     * @exception EX_BAD_PARAMETER when the brightness is invalid, or
-     * @exception EX_NO_RESOURCES  when the brightness cannot be applied.
-     */
-    void setDisplayBrightness(long display, float brightness);
-
-    /**
      * Enables or disables the collection of color content statistics
      * on this display.
      *
@@ -702,13 +738,15 @@
      * This buffer must have been allocated as described in
      * getReadbackBufferAttributes and is in the dataspace provided by the same.
      *
+     * Also provides a file descriptor referring to a release sync fence
+     * object, which must be signaled when it is safe to write to the readback
+     * buffer. If it is already safe to write to the readback buffer, null may be passed instead.
+     *
      * If there is hardware protected content on the display at the time of the next
      * composition, the area of the readback buffer covered by such content must be
      * completely black. Any areas of the buffer not covered by such content may
      * optionally be black as well.
      *
-     * The release fence file descriptor provided works identically to the one
-     * described for setOutputBuffer.
      *
      * This function must not be called between any call to validateDisplay and a
      * subsequent call to presentDisplay.
@@ -716,7 +754,8 @@
      * Parameters:
      * @param display - the display on which to create the layer.
      * @param buffer - the new readback buffer
-     * @param releaseFence - a sync fence file descriptor as described in setOutputBuffer
+     * @param releaseFence - a sync fence file descriptor as described above or null if it is
+     *                       already safe to write to the readback buffer.
      *
      * @exception EX_BAD_DISPLAY - an invalid display handle was passed in
      * @exception EX_BAD_PARAMETER - the new readback buffer handle was invalid
@@ -726,7 +765,7 @@
      *   getReadbackBufferFence
      */
     void setReadbackBuffer(long display, in android.hardware.common.NativeHandle buffer,
-            in ParcelFileDescriptor releaseFence);
+            in @nullable ParcelFileDescriptor releaseFence);
 
     /**
      * Enables or disables the vsync signal for the given display. Virtual
diff --git a/graphics/composer/aidl/android/hardware/graphics/composer3/LayerCommand.aidl b/graphics/composer/aidl/android/hardware/graphics/composer3/LayerCommand.aidl
index 761da9a..0a2711b 100644
--- a/graphics/composer/aidl/android/hardware/graphics/composer3/LayerCommand.aidl
+++ b/graphics/composer/aidl/android/hardware/graphics/composer3/LayerCommand.aidl
@@ -22,8 +22,7 @@
 import android.hardware.graphics.common.Rect;
 import android.hardware.graphics.composer3.Buffer;
 import android.hardware.graphics.composer3.Color;
-import android.hardware.graphics.composer3.FloatColor;
-import android.hardware.graphics.composer3.GenericMetadata;
+import android.hardware.graphics.composer3.Luminance;
 import android.hardware.graphics.composer3.ParcelableBlendMode;
 import android.hardware.graphics.composer3.ParcelableComposition;
 import android.hardware.graphics.composer3.ParcelableDataspace;
@@ -31,7 +30,6 @@
 import android.hardware.graphics.composer3.PerFrameMetadata;
 import android.hardware.graphics.composer3.PerFrameMetadataBlob;
 import android.hardware.graphics.composer3.PlaneAlpha;
-import android.hardware.graphics.composer3.WhitePointNits;
 import android.hardware.graphics.composer3.ZOrder;
 
 @VintfStability
@@ -115,13 +113,6 @@
     @nullable Color color;
 
     /**
-     * Sets the color of the given layer. If the composition type of the layer
-     * is not Composition.SOLID_COLOR, this call must succeed and have no
-     * other effect.
-     */
-    @nullable FloatColor floatColor;
-
-    /**
      * Sets the desired composition type of the given layer. During
      * validateDisplay, the device may request changes to the composition
      * types of any of the layers as described in the definition of
@@ -244,34 +235,7 @@
      * brightness in nits, and accordingly SDR content shall be dimmed to the desired white point
      * provided.
      */
-    @nullable WhitePointNits whitePointNits;
-
-    /**
-     * Sets a piece of generic metadata for the given layer. If this
-     * function is called twice with the same key but different values, the
-     * newer value must override the older one. Calling this function with a
-     * 0-length value must reset that key's metadata as if it had not been
-     * set.
-     *
-     * A given piece of metadata may either be mandatory or a hint
-     * (non-mandatory) as indicated by the second parameter. Mandatory
-     * metadata may affect the composition result, which is to say that it
-     * may cause a visible change in the final image. By contrast, hints may
-     * only affect the composition strategy, such as which layers are
-     * composited by the client, but must not cause a visible change in the
-     * final image. The value of the mandatory flag shall match the value
-     * returned from getLayerGenericMetadataKeys for the given key.
-     *
-     * Only keys which have been returned from getLayerGenericMetadataKeys()
-     * shall be accepted. Any other keys must result in an UNSUPPORTED error.
-     *
-     * The value passed into this function shall be the binary
-     * representation of a stable AIDL type corresponding to the given key. For
-     * example, a key of 'com.example.Foo-V2' shall be paired with a
-     * value of type com.exampleFoo-V2, which would be defined in a
-     * vendor HAL extension.
-     */
-    @nullable GenericMetadata genericMetadata;
+    @nullable Luminance whitePointNits;
 
     /**
      * Sets the PerFrameMetadata for the display. This metadata must be used
@@ -292,4 +256,15 @@
      * This command may be called every frame.
      */
     @nullable PerFrameMetadataBlob[] perFrameMetadataBlob;
+
+    /**
+     * Specifies a region of the layer that is transparent and may be skipped
+     * by the DPU, e.g. using a blocking region, in order to save power. This
+     * is only a hint, so the composition of the layer must look the same
+     * whether or not this region is skipped.
+     *
+     * The region is in screen space and must not exceed the dimensions of
+     * the screen.
+     */
+    @nullable Rect[] blockingRegion;
 }
diff --git a/graphics/composer/aidl/android/hardware/graphics/composer3/LayerGenericMetadataKey.aidl b/graphics/composer/aidl/android/hardware/graphics/composer3/LayerGenericMetadataKey.aidl
deleted file mode 100644
index 17704b8..0000000
--- a/graphics/composer/aidl/android/hardware/graphics/composer3/LayerGenericMetadataKey.aidl
+++ /dev/null
@@ -1,31 +0,0 @@
-/**
- * Copyright (c) 2021, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.hardware.graphics.composer3;
-
-@VintfStability
-parcelable LayerGenericMetadataKey {
-    /**
-     * Key names must comply with the requirements specified for
-     * getLayerGenericMetadataKeys below
-     */
-    String name;
-    /**
-     * The mandatory flag is defined in the description of
-     * setLayerGenericMetadata above
-     */
-    boolean mandatory;
-}
diff --git a/graphics/composer/aidl/android/hardware/graphics/composer3/Luminance.aidl b/graphics/composer/aidl/android/hardware/graphics/composer3/Luminance.aidl
new file mode 100644
index 0000000..5b1c1b4
--- /dev/null
+++ b/graphics/composer/aidl/android/hardware/graphics/composer3/Luminance.aidl
@@ -0,0 +1,26 @@
+/**
+ * Copyright (c) 2021, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.composer3;
+
+@VintfStability
+parcelable Luminance {
+    /**
+     * Photometric measure of luminous intensity per unit area of light.
+     * Units are nits, or cd/m^2.
+     */
+    float nits;
+}
diff --git a/graphics/composer/aidl/android/hardware/graphics/composer3/PresentOrValidate.aidl b/graphics/composer/aidl/android/hardware/graphics/composer3/PresentOrValidate.aidl
index f3153bd..5ae8940 100644
--- a/graphics/composer/aidl/android/hardware/graphics/composer3/PresentOrValidate.aidl
+++ b/graphics/composer/aidl/android/hardware/graphics/composer3/PresentOrValidate.aidl
@@ -27,6 +27,6 @@
     /**
      * Whether PresentOrValidate presented or validated the display.
      */
-    @VintfStability enum Result { Presented, Validated }
+    @VintfStability enum Result { Validated, Presented }
     Result result;
 }
diff --git a/graphics/composer/aidl/android/hardware/graphics/composer3/WhitePointNits.aidl b/graphics/composer/aidl/android/hardware/graphics/composer3/WhitePointNits.aidl
deleted file mode 100644
index 2a1d1c6..0000000
--- a/graphics/composer/aidl/android/hardware/graphics/composer3/WhitePointNits.aidl
+++ /dev/null
@@ -1,29 +0,0 @@
-/**
- * Copyright (c) 2021, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.hardware.graphics.composer3;
-
-@VintfStability
-parcelable WhitePointNits {
-    /**
-     * The desired white point for the layer. This is intended to be used when presenting
-     * an SDR layer alongside HDR content. The HDR content will be presented at the display
-     * brightness in nits, and accordingly SDR content shall be dimmed to the desired white point
-     * provided.
-     * @see LayerCommand.whitePointNits.
-     */
-    float nits;
-}
diff --git a/graphics/composer/aidl/android/hardware/graphics/composer3/translate-ndk.cpp b/graphics/composer/aidl/android/hardware/graphics/composer3/translate-ndk.cpp
deleted file mode 100644
index a3c8176..0000000
--- a/graphics/composer/aidl/android/hardware/graphics/composer3/translate-ndk.cpp
+++ /dev/null
@@ -1,457 +0,0 @@
-/**
- * Copyright (c) 2021, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "android/hardware/graphics/composer3/translate-ndk.h"
-
-namespace android::h2a {
-
-static_assert(
-        aidl::android::hardware::graphics::composer3::IComposer::EX_NO_RESOURCES ==
-        static_cast<int32_t>(::android::hardware::graphics::composer::V2_4::Error::NO_RESOURCES));
-
-static_assert(
-        aidl::android::hardware::graphics::composer3::IComposerClient::EX_BAD_CONFIG ==
-        static_cast<int32_t>(::android::hardware::graphics::composer::V2_4::Error::BAD_CONFIG));
-static_assert(
-        aidl::android::hardware::graphics::composer3::IComposerClient::EX_BAD_DISPLAY ==
-        static_cast<int32_t>(::android::hardware::graphics::composer::V2_4::Error::BAD_DISPLAY));
-static_assert(
-        aidl::android::hardware::graphics::composer3::IComposerClient::EX_BAD_LAYER ==
-        static_cast<int32_t>(::android::hardware::graphics::composer::V2_4::Error::BAD_LAYER));
-static_assert(
-        aidl::android::hardware::graphics::composer3::IComposerClient::EX_BAD_PARAMETER ==
-        static_cast<int32_t>(::android::hardware::graphics::composer::V2_4::Error::BAD_PARAMETER));
-static_assert(
-        aidl::android::hardware::graphics::composer3::IComposerClient::EX_NO_RESOURCES ==
-        static_cast<int32_t>(::android::hardware::graphics::composer::V2_4::Error::NO_RESOURCES));
-static_assert(
-        aidl::android::hardware::graphics::composer3::IComposerClient::EX_NOT_VALIDATED ==
-        static_cast<int32_t>(::android::hardware::graphics::composer::V2_4::Error::NOT_VALIDATED));
-static_assert(
-        aidl::android::hardware::graphics::composer3::IComposerClient::EX_UNSUPPORTED ==
-        static_cast<int32_t>(::android::hardware::graphics::composer::V2_4::Error::UNSUPPORTED));
-static_assert(
-        aidl::android::hardware::graphics::composer3::IComposerClient::EX_SEAMLESS_NOT_ALLOWED ==
-        static_cast<int32_t>(
-                ::android::hardware::graphics::composer::V2_4::Error::SEAMLESS_NOT_ALLOWED));
-static_assert(
-        aidl::android::hardware::graphics::composer3::IComposerClient::EX_SEAMLESS_NOT_POSSIBLE ==
-        static_cast<int32_t>(
-                ::android::hardware::graphics::composer::V2_4::Error::SEAMLESS_NOT_POSSIBLE));
-
-static_assert(
-        aidl::android::hardware::graphics::composer3::Capability::INVALID ==
-        static_cast<aidl::android::hardware::graphics::composer3::Capability>(
-                ::android::hardware::graphics::composer::V2_1::IComposer::Capability::INVALID));
-static_assert(aidl::android::hardware::graphics::composer3::Capability::SIDEBAND_STREAM ==
-              static_cast<aidl::android::hardware::graphics::composer3::Capability>(
-                      ::android::hardware::graphics::composer::V2_1::IComposer::Capability::
-                              SIDEBAND_STREAM));
-static_assert(
-        aidl::android::hardware::graphics::composer3::Capability::SKIP_CLIENT_COLOR_TRANSFORM ==
-        static_cast<aidl::android::hardware::graphics::composer3::Capability>(
-                ::android::hardware::graphics::composer::V2_1::IComposer::Capability::
-                        SKIP_CLIENT_COLOR_TRANSFORM));
-static_assert(
-        aidl::android::hardware::graphics::composer3::Capability::PRESENT_FENCE_IS_NOT_RELIABLE ==
-        static_cast<aidl::android::hardware::graphics::composer3::Capability>(
-                ::android::hardware::graphics::composer::V2_1::IComposer::Capability::
-                        PRESENT_FENCE_IS_NOT_RELIABLE));
-// HWC2_CAPABILITY_SKIP_VALIDATE was never defined for HIDL, so we just hardcode its value
-static_assert(aidl::android::hardware::graphics::composer3::Capability::SKIP_VALIDATE ==
-              static_cast<aidl::android::hardware::graphics::composer3::Capability>(4));
-
-static_assert(aidl::android::hardware::graphics::composer3::DisplayRequest::LayerRequest::
-                      CLEAR_CLIENT_TARGET ==
-              static_cast<int>(::android::hardware::graphics::composer::V2_1::IComposerClient::
-                                       LayerRequest::CLEAR_CLIENT_TARGET));
-
-static_assert(aidl::android::hardware::graphics::common::BlendMode::INVALID ==
-              static_cast<aidl::android::hardware::graphics::common::BlendMode>(
-                      ::android::hardware::graphics::composer::V2_1::IComposerClient::BlendMode::
-                              INVALID));
-static_assert(
-        aidl::android::hardware::graphics::common::BlendMode::NONE ==
-        static_cast<aidl::android::hardware::graphics::common::BlendMode>(
-                ::android::hardware::graphics::composer::V2_1::IComposerClient::BlendMode::NONE));
-static_assert(aidl::android::hardware::graphics::common::BlendMode::PREMULTIPLIED ==
-              static_cast<aidl::android::hardware::graphics::common::BlendMode>(
-                      ::android::hardware::graphics::composer::V2_1::IComposerClient::BlendMode::
-                              PREMULTIPLIED));
-static_assert(aidl::android::hardware::graphics::common::BlendMode::COVERAGE ==
-              static_cast<aidl::android::hardware::graphics::common::BlendMode>(
-                      ::android::hardware::graphics::composer::V2_1::IComposerClient::BlendMode::
-                              COVERAGE));
-
-static_assert(aidl::android::hardware::graphics::composer3::Composition::INVALID ==
-              static_cast<aidl::android::hardware::graphics::composer3::Composition>(
-                      ::android::hardware::graphics::composer::V2_1::IComposerClient::Composition::
-                              INVALID));
-static_assert(aidl::android::hardware::graphics::composer3::Composition::CLIENT ==
-              static_cast<aidl::android::hardware::graphics::composer3::Composition>(
-                      ::android::hardware::graphics::composer::V2_1::IComposerClient::Composition::
-                              CLIENT));
-static_assert(aidl::android::hardware::graphics::composer3::Composition::DEVICE ==
-              static_cast<aidl::android::hardware::graphics::composer3::Composition>(
-                      ::android::hardware::graphics::composer::V2_1::IComposerClient::Composition::
-                              DEVICE));
-static_assert(aidl::android::hardware::graphics::composer3::Composition::SOLID_COLOR ==
-              static_cast<aidl::android::hardware::graphics::composer3::Composition>(
-                      ::android::hardware::graphics::composer::V2_1::IComposerClient::Composition::
-                              SOLID_COLOR));
-static_assert(aidl::android::hardware::graphics::composer3::Composition::CURSOR ==
-              static_cast<aidl::android::hardware::graphics::composer3::Composition>(
-                      ::android::hardware::graphics::composer::V2_1::IComposerClient::Composition::
-                              CURSOR));
-static_assert(aidl::android::hardware::graphics::composer3::Composition::SIDEBAND ==
-              static_cast<aidl::android::hardware::graphics::composer3::Composition>(
-                      ::android::hardware::graphics::composer::V2_1::IComposerClient::Composition::
-                              SIDEBAND));
-
-static_assert(aidl::android::hardware::graphics::composer3::DisplayRequest::FLIP_CLIENT_TARGET ==
-              static_cast<int>(::android::hardware::graphics::composer::V2_1::IComposerClient::
-                                       DisplayRequest::FLIP_CLIENT_TARGET));
-static_assert(aidl::android::hardware::graphics::composer3::DisplayRequest::
-                      WRITE_CLIENT_TARGET_TO_OUTPUT ==
-              static_cast<int>(::android::hardware::graphics::composer::V2_1::IComposerClient::
-                                       DisplayRequest::WRITE_CLIENT_TARGET_TO_OUTPUT));
-
-static_assert(aidl::android::hardware::graphics::composer3::HandleIndex::EMPTY ==
-              static_cast<aidl::android::hardware::graphics::composer3::HandleIndex>(
-                      ::android::hardware::graphics::composer::V2_1::IComposerClient::HandleIndex::
-                              EMPTY));
-static_assert(aidl::android::hardware::graphics::composer3::HandleIndex::CACHED ==
-              static_cast<aidl::android::hardware::graphics::composer3::HandleIndex>(
-                      ::android::hardware::graphics::composer::V2_1::IComposerClient::HandleIndex::
-                              CACHED));
-
-static_assert(
-        aidl::android::hardware::graphics::composer3::PowerMode::OFF ==
-        static_cast<aidl::android::hardware::graphics::composer3::PowerMode>(
-                ::android::hardware::graphics::composer::V2_2::IComposerClient::PowerMode::OFF));
-static_assert(
-        aidl::android::hardware::graphics::composer3::PowerMode::DOZE ==
-        static_cast<aidl::android::hardware::graphics::composer3::PowerMode>(
-                ::android::hardware::graphics::composer::V2_2::IComposerClient::PowerMode::DOZE));
-static_assert(aidl::android::hardware::graphics::composer3::PowerMode::DOZE_SUSPEND ==
-              static_cast<aidl::android::hardware::graphics::composer3::PowerMode>(
-                      ::android::hardware::graphics::composer::V2_2::IComposerClient::PowerMode::
-                              DOZE_SUSPEND));
-static_assert(
-        aidl::android::hardware::graphics::composer3::PowerMode::ON ==
-        static_cast<aidl::android::hardware::graphics::composer3::PowerMode>(
-                ::android::hardware::graphics::composer::V2_2::IComposerClient::PowerMode::ON));
-static_assert(aidl::android::hardware::graphics::composer3::PowerMode::ON_SUSPEND ==
-              static_cast<aidl::android::hardware::graphics::composer3::PowerMode>(
-                      ::android::hardware::graphics::composer::V2_2::IComposerClient::PowerMode::
-                              ON_SUSPEND));
-
-static_assert(aidl::android::hardware::graphics::composer3::DisplayCapability::INVALID ==
-              static_cast<aidl::android::hardware::graphics::composer3::DisplayCapability>(
-                      ::android::hardware::graphics::composer::V2_4::IComposerClient::
-                              DisplayCapability::INVALID));
-static_assert(aidl::android::hardware::graphics::composer3::DisplayCapability::
-                      SKIP_CLIENT_COLOR_TRANSFORM ==
-              static_cast<aidl::android::hardware::graphics::composer3::DisplayCapability>(
-                      ::android::hardware::graphics::composer::V2_4::IComposerClient::
-                              DisplayCapability::SKIP_CLIENT_COLOR_TRANSFORM));
-static_assert(aidl::android::hardware::graphics::composer3::DisplayCapability::DOZE ==
-              static_cast<aidl::android::hardware::graphics::composer3::DisplayCapability>(
-                      ::android::hardware::graphics::composer::V2_4::IComposerClient::
-                              DisplayCapability::DOZE));
-static_assert(aidl::android::hardware::graphics::composer3::DisplayCapability::BRIGHTNESS ==
-              static_cast<aidl::android::hardware::graphics::composer3::DisplayCapability>(
-                      ::android::hardware::graphics::composer::V2_4::IComposerClient::
-                              DisplayCapability::BRIGHTNESS));
-static_assert(aidl::android::hardware::graphics::composer3::DisplayCapability::PROTECTED_CONTENTS ==
-              static_cast<aidl::android::hardware::graphics::composer3::DisplayCapability>(
-                      ::android::hardware::graphics::composer::V2_4::IComposerClient::
-                              DisplayCapability::PROTECTED_CONTENTS));
-static_assert(
-        aidl::android::hardware::graphics::composer3::DisplayCapability::AUTO_LOW_LATENCY_MODE ==
-        static_cast<aidl::android::hardware::graphics::composer3::DisplayCapability>(
-                ::android::hardware::graphics::composer::V2_4::IComposerClient::DisplayCapability::
-                        AUTO_LOW_LATENCY_MODE));
-
-static_assert(aidl::android::hardware::graphics::composer3::DisplayAttribute::INVALID ==
-              static_cast<aidl::android::hardware::graphics::composer3::DisplayAttribute>(
-                      ::android::hardware::graphics::composer::V2_4::IComposerClient::Attribute::
-                              INVALID));
-static_assert(
-        aidl::android::hardware::graphics::composer3::DisplayAttribute::WIDTH ==
-        static_cast<aidl::android::hardware::graphics::composer3::DisplayAttribute>(
-                ::android::hardware::graphics::composer::V2_4::IComposerClient::Attribute::WIDTH));
-static_assert(
-        aidl::android::hardware::graphics::composer3::DisplayAttribute::HEIGHT ==
-        static_cast<aidl::android::hardware::graphics::composer3::DisplayAttribute>(
-                ::android::hardware::graphics::composer::V2_4::IComposerClient::Attribute::HEIGHT));
-static_assert(aidl::android::hardware::graphics::composer3::DisplayAttribute::VSYNC_PERIOD ==
-              static_cast<aidl::android::hardware::graphics::composer3::DisplayAttribute>(
-                      ::android::hardware::graphics::composer::V2_4::IComposerClient::Attribute::
-                              VSYNC_PERIOD));
-static_assert(
-        aidl::android::hardware::graphics::composer3::DisplayAttribute::DPI_X ==
-        static_cast<aidl::android::hardware::graphics::composer3::DisplayAttribute>(
-                ::android::hardware::graphics::composer::V2_4::IComposerClient::Attribute::DPI_X));
-static_assert(
-        aidl::android::hardware::graphics::composer3::DisplayAttribute::DPI_Y ==
-        static_cast<aidl::android::hardware::graphics::composer3::DisplayAttribute>(
-                ::android::hardware::graphics::composer::V2_4::IComposerClient::Attribute::DPI_Y));
-static_assert(aidl::android::hardware::graphics::composer3::DisplayAttribute::CONFIG_GROUP ==
-              static_cast<aidl::android::hardware::graphics::composer3::DisplayAttribute>(
-                      ::android::hardware::graphics::composer::V2_4::IComposerClient::Attribute::
-                              CONFIG_GROUP));
-
-static_assert(aidl::android::hardware::graphics::composer3::DisplayConnectionType::INTERNAL ==
-              static_cast<aidl::android::hardware::graphics::composer3::DisplayConnectionType>(
-                      ::android::hardware::graphics::composer::V2_4::IComposerClient::
-                              DisplayConnectionType::INTERNAL));
-static_assert(aidl::android::hardware::graphics::composer3::DisplayConnectionType::EXTERNAL ==
-              static_cast<aidl::android::hardware::graphics::composer3::DisplayConnectionType>(
-                      ::android::hardware::graphics::composer::V2_4::IComposerClient::
-                              DisplayConnectionType::EXTERNAL));
-
-static_assert(
-        aidl::android::hardware::graphics::composer3::PerFrameMetadataKey::DISPLAY_RED_PRIMARY_X ==
-        static_cast<aidl::android::hardware::graphics::composer3::PerFrameMetadataKey>(
-                ::android::hardware::graphics::composer::V2_3::IComposerClient::
-                        PerFrameMetadataKey::DISPLAY_RED_PRIMARY_X));
-static_assert(
-        aidl::android::hardware::graphics::composer3::PerFrameMetadataKey::DISPLAY_RED_PRIMARY_Y ==
-        static_cast<aidl::android::hardware::graphics::composer3::PerFrameMetadataKey>(
-                ::android::hardware::graphics::composer::V2_3::IComposerClient::
-                        PerFrameMetadataKey::DISPLAY_RED_PRIMARY_Y));
-static_assert(aidl::android::hardware::graphics::composer3::PerFrameMetadataKey::
-                      DISPLAY_GREEN_PRIMARY_X ==
-              static_cast<aidl::android::hardware::graphics::composer3::PerFrameMetadataKey>(
-                      ::android::hardware::graphics::composer::V2_3::IComposerClient::
-                              PerFrameMetadataKey::DISPLAY_GREEN_PRIMARY_X));
-static_assert(aidl::android::hardware::graphics::composer3::PerFrameMetadataKey::
-                      DISPLAY_GREEN_PRIMARY_Y ==
-              static_cast<aidl::android::hardware::graphics::composer3::PerFrameMetadataKey>(
-                      ::android::hardware::graphics::composer::V2_3::IComposerClient::
-                              PerFrameMetadataKey::DISPLAY_GREEN_PRIMARY_Y));
-static_assert(
-        aidl::android::hardware::graphics::composer3::PerFrameMetadataKey::DISPLAY_BLUE_PRIMARY_X ==
-        static_cast<aidl::android::hardware::graphics::composer3::PerFrameMetadataKey>(
-                ::android::hardware::graphics::composer::V2_3::IComposerClient::
-                        PerFrameMetadataKey::DISPLAY_BLUE_PRIMARY_X));
-static_assert(
-        aidl::android::hardware::graphics::composer3::PerFrameMetadataKey::DISPLAY_BLUE_PRIMARY_Y ==
-        static_cast<aidl::android::hardware::graphics::composer3::PerFrameMetadataKey>(
-                ::android::hardware::graphics::composer::V2_3::IComposerClient::
-                        PerFrameMetadataKey::DISPLAY_BLUE_PRIMARY_Y));
-static_assert(aidl::android::hardware::graphics::composer3::PerFrameMetadataKey::WHITE_POINT_X ==
-              static_cast<aidl::android::hardware::graphics::composer3::PerFrameMetadataKey>(
-                      ::android::hardware::graphics::composer::V2_3::IComposerClient::
-                              PerFrameMetadataKey::WHITE_POINT_X));
-static_assert(aidl::android::hardware::graphics::composer3::PerFrameMetadataKey::WHITE_POINT_Y ==
-              static_cast<aidl::android::hardware::graphics::composer3::PerFrameMetadataKey>(
-                      ::android::hardware::graphics::composer::V2_3::IComposerClient::
-                              PerFrameMetadataKey::WHITE_POINT_Y));
-static_assert(aidl::android::hardware::graphics::composer3::PerFrameMetadataKey::MAX_LUMINANCE ==
-              static_cast<aidl::android::hardware::graphics::composer3::PerFrameMetadataKey>(
-                      ::android::hardware::graphics::composer::V2_3::IComposerClient::
-                              PerFrameMetadataKey::MAX_LUMINANCE));
-static_assert(aidl::android::hardware::graphics::composer3::PerFrameMetadataKey::MIN_LUMINANCE ==
-              static_cast<aidl::android::hardware::graphics::composer3::PerFrameMetadataKey>(
-                      ::android::hardware::graphics::composer::V2_3::IComposerClient::
-                              PerFrameMetadataKey::MIN_LUMINANCE));
-static_assert(aidl::android::hardware::graphics::composer3::PerFrameMetadataKey::
-                      MAX_CONTENT_LIGHT_LEVEL ==
-              static_cast<aidl::android::hardware::graphics::composer3::PerFrameMetadataKey>(
-                      ::android::hardware::graphics::composer::V2_3::IComposerClient::
-                              PerFrameMetadataKey::MAX_CONTENT_LIGHT_LEVEL));
-static_assert(aidl::android::hardware::graphics::composer3::PerFrameMetadataKey::
-                      MAX_FRAME_AVERAGE_LIGHT_LEVEL ==
-              static_cast<aidl::android::hardware::graphics::composer3::PerFrameMetadataKey>(
-                      ::android::hardware::graphics::composer::V2_3::IComposerClient::
-                              PerFrameMetadataKey::MAX_FRAME_AVERAGE_LIGHT_LEVEL));
-static_assert(aidl::android::hardware::graphics::composer3::PerFrameMetadataKey::HDR10_PLUS_SEI ==
-              static_cast<aidl::android::hardware::graphics::composer3::PerFrameMetadataKey>(
-                      ::android::hardware::graphics::composer::V2_3::IComposerClient::
-                              PerFrameMetadataKey::HDR10_PLUS_SEI));
-
-static_assert(
-        aidl::android::hardware::graphics::composer3::FormatColorComponent::FORMAT_COMPONENT_0 ==
-        static_cast<aidl::android::hardware::graphics::composer3::FormatColorComponent>(
-                ::android::hardware::graphics::composer::V2_3::IComposerClient::
-                        FormatColorComponent::FORMAT_COMPONENT_0));
-static_assert(
-        aidl::android::hardware::graphics::composer3::FormatColorComponent::FORMAT_COMPONENT_1 ==
-        static_cast<aidl::android::hardware::graphics::composer3::FormatColorComponent>(
-                ::android::hardware::graphics::composer::V2_3::IComposerClient::
-                        FormatColorComponent::FORMAT_COMPONENT_1));
-static_assert(
-        aidl::android::hardware::graphics::composer3::FormatColorComponent::FORMAT_COMPONENT_2 ==
-        static_cast<aidl::android::hardware::graphics::composer3::FormatColorComponent>(
-                ::android::hardware::graphics::composer::V2_3::IComposerClient::
-                        FormatColorComponent::FORMAT_COMPONENT_2));
-static_assert(
-        aidl::android::hardware::graphics::composer3::FormatColorComponent::FORMAT_COMPONENT_3 ==
-        static_cast<aidl::android::hardware::graphics::composer3::FormatColorComponent>(
-                ::android::hardware::graphics::composer::V2_3::IComposerClient::
-                        FormatColorComponent::FORMAT_COMPONENT_3));
-
-static_assert(
-        aidl::android::hardware::graphics::composer3::ContentType::NONE ==
-        static_cast<aidl::android::hardware::graphics::composer3::ContentType>(
-                ::android::hardware::graphics::composer::V2_4::IComposerClient::ContentType::NONE));
-static_assert(aidl::android::hardware::graphics::composer3::ContentType::GRAPHICS ==
-              static_cast<aidl::android::hardware::graphics::composer3::ContentType>(
-                      ::android::hardware::graphics::composer::V2_4::IComposerClient::ContentType::
-                              GRAPHICS));
-static_assert(aidl::android::hardware::graphics::composer3::ContentType::PHOTO ==
-              static_cast<aidl::android::hardware::graphics::composer3::ContentType>(
-                      ::android::hardware::graphics::composer::V2_4::IComposerClient::ContentType::
-                              PHOTO));
-static_assert(aidl::android::hardware::graphics::composer3::ContentType::CINEMA ==
-              static_cast<aidl::android::hardware::graphics::composer3::ContentType>(
-                      ::android::hardware::graphics::composer::V2_4::IComposerClient::ContentType::
-                              CINEMA));
-static_assert(
-        aidl::android::hardware::graphics::composer3::ContentType::GAME ==
-        static_cast<aidl::android::hardware::graphics::composer3::ContentType>(
-                ::android::hardware::graphics::composer::V2_4::IComposerClient::ContentType::GAME));
-
-__attribute__((warn_unused_result)) bool translate(
-        const ::android::hardware::graphics::composer::V2_4::VsyncPeriodChangeTimeline& in,
-        aidl::android::hardware::graphics::composer3::VsyncPeriodChangeTimeline* out) {
-    out->newVsyncAppliedTimeNanos = static_cast<int64_t>(in.newVsyncAppliedTimeNanos);
-    out->refreshRequired = static_cast<bool>(in.refreshRequired);
-    out->refreshTimeNanos = static_cast<int64_t>(in.refreshTimeNanos);
-    return true;
-}
-
-__attribute__((warn_unused_result)) bool translate(
-        const ::android::hardware::graphics::composer::V2_1::IComposerClient::Rect& in,
-        aidl::android::hardware::graphics::common::Rect* out) {
-    out->left = static_cast<int32_t>(in.left);
-    out->top = static_cast<int32_t>(in.top);
-    out->right = static_cast<int32_t>(in.right);
-    out->bottom = static_cast<int32_t>(in.bottom);
-    return true;
-}
-
-__attribute__((warn_unused_result)) bool translate(
-        const ::android::hardware::graphics::composer::V2_1::IComposerClient::FRect& in,
-        aidl::android::hardware::graphics::common::FRect* out) {
-    out->left = static_cast<float>(in.left);
-    out->top = static_cast<float>(in.top);
-    out->right = static_cast<float>(in.right);
-    out->bottom = static_cast<float>(in.bottom);
-    return true;
-}
-
-__attribute__((warn_unused_result)) bool translate(
-        const ::android::hardware::graphics::composer::V2_1::IComposerClient::Color& in,
-        aidl::android::hardware::graphics::composer3::Color* out) {
-    // FIXME This requires conversion between signed and unsigned. Change this if it doesn't suit
-    // your needs.
-    if (in.r > std::numeric_limits<int8_t>::max() || in.r < 0) {
-        return false;
-    }
-    out->r = static_cast<int8_t>(in.r);
-    // FIXME This requires conversion between signed and unsigned. Change this if it doesn't suit
-    // your needs.
-    if (in.g > std::numeric_limits<int8_t>::max() || in.g < 0) {
-        return false;
-    }
-    out->g = static_cast<int8_t>(in.g);
-    // FIXME This requires conversion between signed and unsigned. Change this if it doesn't suit
-    // your needs.
-    if (in.b > std::numeric_limits<int8_t>::max() || in.b < 0) {
-        return false;
-    }
-    out->b = static_cast<int8_t>(in.b);
-    // FIXME This requires conversion between signed and unsigned. Change this if it doesn't suit
-    // your needs.
-    if (in.a > std::numeric_limits<int8_t>::max() || in.a < 0) {
-        return false;
-    }
-    out->a = static_cast<int8_t>(in.a);
-    return true;
-}
-
-__attribute__((warn_unused_result)) bool translate(
-        const ::android::hardware::graphics::composer::V2_3::IComposerClient::PerFrameMetadata& in,
-        aidl::android::hardware::graphics::composer3::PerFrameMetadata* out) {
-    out->key =
-            static_cast<aidl::android::hardware::graphics::composer3::PerFrameMetadataKey>(in.key);
-    out->value = static_cast<float>(in.value);
-    return true;
-}
-
-__attribute__((warn_unused_result)) bool translate(
-        const ::android::hardware::graphics::composer::V2_2::IComposerClient::FloatColor& in,
-        aidl::android::hardware::graphics::composer3::FloatColor* out) {
-    out->r = static_cast<float>(in.r);
-    out->g = static_cast<float>(in.g);
-    out->b = static_cast<float>(in.b);
-    out->a = static_cast<float>(in.a);
-    return true;
-}
-
-__attribute__((warn_unused_result)) bool translate(
-        const ::android::hardware::graphics::composer::V2_3::IComposerClient::PerFrameMetadataBlob&
-                in,
-        aidl::android::hardware::graphics::composer3::PerFrameMetadataBlob* out) {
-    out->key =
-            static_cast<aidl::android::hardware::graphics::composer3::PerFrameMetadataKey>(in.key);
-    {
-        size_t size = in.blob.size();
-        for (size_t i = 0; i < size; i++) {
-            // FIXME This requires conversion between signed and unsigned. Change this if it doesn't
-            // suit your needs.
-            if (in.blob[i] > std::numeric_limits<int8_t>::max() || in.blob[i] < 0) {
-                return false;
-            }
-            out->blob.push_back(static_cast<int8_t>(in.blob[i]));
-        }
-    }
-    return true;
-}
-
-__attribute__((warn_unused_result)) bool translate(
-        const ::android::hardware::graphics::composer::V2_4::IComposerClient::
-                VsyncPeriodChangeConstraints& in,
-        aidl::android::hardware::graphics::composer3::VsyncPeriodChangeConstraints* out) {
-    out->desiredTimeNanos = static_cast<int64_t>(in.desiredTimeNanos);
-    out->seamlessRequired = static_cast<bool>(in.seamlessRequired);
-    return true;
-}
-
-__attribute__((warn_unused_result)) bool translate(
-        const ::android::hardware::graphics::composer::V2_4::IComposerClient::ClientTargetProperty&
-                in,
-        aidl::android::hardware::graphics::composer3::ClientTargetProperty* out) {
-    out->pixelFormat =
-            static_cast<aidl::android::hardware::graphics::common::PixelFormat>(in.pixelFormat);
-    out->dataspace =
-            static_cast<aidl::android::hardware::graphics::common::Dataspace>(in.dataspace);
-    return true;
-}
-
-__attribute__((warn_unused_result)) bool translate(
-        const ::android::hardware::graphics::composer::V2_4::IComposerClient::
-                LayerGenericMetadataKey& in,
-        aidl::android::hardware::graphics::composer3::LayerGenericMetadataKey* out) {
-    out->name = in.name;
-    out->mandatory = static_cast<bool>(in.mandatory);
-    return true;
-}
-
-}  // namespace android::h2a
diff --git a/graphics/composer/aidl/android/hardware/graphics/composer3/vts/functional/VtsHalGraphicsComposer3_ReadbackTest.cpp b/graphics/composer/aidl/android/hardware/graphics/composer3/vts/functional/VtsHalGraphicsComposer3_ReadbackTest.cpp
index 34dea9e..e519221 100644
--- a/graphics/composer/aidl/android/hardware/graphics/composer3/vts/functional/VtsHalGraphicsComposer3_ReadbackTest.cpp
+++ b/graphics/composer/aidl/android/hardware/graphics/composer3/vts/functional/VtsHalGraphicsComposer3_ReadbackTest.cpp
@@ -19,6 +19,7 @@
 #include <aidl/Gtest.h>
 #include <aidl/Vintf.h>
 #include <aidl/android/hardware/graphics/common/BufferUsage.h>
+#include <aidl/android/hardware/graphics/composer3/IComposer.h>
 #include <android/binder_manager.h>
 #include <composer-vts/include/ReadbackVts.h>
 #include <composer-vts/include/RenderEngineVts.h>
@@ -103,13 +104,8 @@
         ASSERT_NO_FATAL_FAILURE(mComposerClient->setPowerMode(mPrimaryDisplay, PowerMode::OFF));
         const auto errors = mReader.takeErrors();
         ASSERT_TRUE(mReader.takeErrors().empty());
+        ASSERT_TRUE(mReader.takeChangedCompositionTypes(mPrimaryDisplay).empty());
 
-        std::vector<int64_t> layers;
-        std::vector<Composition> types;
-        mReader.takeChangedCompositionTypes(mPrimaryDisplay, &layers, &types);
-
-        ASSERT_TRUE(layers.empty());
-        ASSERT_TRUE(types.empty());
         if (mComposerCallback != nullptr) {
             EXPECT_EQ(0, mComposerCallback->getInvalidHotplugCount());
             EXPECT_EQ(0, mComposerCallback->getInvalidRefreshCount());
@@ -118,12 +114,14 @@
     }
 
     ::android::sp<::android::GraphicBuffer> allocate() {
+        const auto width = static_cast<uint32_t>(mDisplayWidth);
+        const auto height = static_cast<uint32_t>(mDisplayHeight);
+        const auto usage = static_cast<uint32_t>(common::BufferUsage::CPU_WRITE_OFTEN) |
+                           static_cast<uint32_t>(common::BufferUsage::CPU_READ_OFTEN);
+
         return ::android::sp<::android::GraphicBuffer>::make(
-                mDisplayWidth, mDisplayHeight, ::android::PIXEL_FORMAT_RGBA_8888,
-                /*layerCount*/ 1,
-                static_cast<uint64_t>(static_cast<int>(common::BufferUsage::CPU_WRITE_OFTEN) |
-                                      static_cast<int>(common::BufferUsage::CPU_READ_OFTEN)),
-                "VtsHalGraphicsComposer3_ReadbackTest");
+                width, height, ::android::PIXEL_FORMAT_RGBA_8888,
+                /*layerCount*/ 1u, usage, "VtsHalGraphicsComposer3_ReadbackTest");
     }
 
     void writeLayers(const std::vector<std::shared_ptr<TestLayer>>& layers) {
@@ -141,10 +139,10 @@
         }
 
         std::vector<CommandResultPayload> results;
-        const auto status = mComposerClient->executeCommands(commands, &results);
+        auto status = mComposerClient->executeCommands(commands, &results);
         ASSERT_TRUE(status.isOk()) << "executeCommands failed " << status.getDescription();
 
-        mReader.parse(results);
+        mReader.parse(std::move(results));
         mWriter.reset();
     }
 
@@ -258,15 +256,11 @@
 
         writeLayers(layers);
         ASSERT_TRUE(mReader.takeErrors().empty());
-        mWriter.validateDisplay(mPrimaryDisplay);
+        mWriter.validateDisplay(mPrimaryDisplay, ComposerClientWriter::kNoTimestamp);
         execute();
         // if hwc cannot handle and asks for composition change,
         // just succeed the test
-        std::vector<int64_t> changedCompositionLayers;
-        std::vector<Composition> changedCompositionTypes;
-        mReader.takeChangedCompositionTypes(mPrimaryDisplay, &changedCompositionLayers,
-                                            &changedCompositionTypes);
-        if (!changedCompositionLayers.empty()) {
+        if (!mReader.takeChangedCompositionTypes(mPrimaryDisplay).empty()) {
             GTEST_SUCCEED();
             return;
         }
@@ -317,14 +311,10 @@
 
         writeLayers(layers);
         ASSERT_TRUE(mReader.takeErrors().empty());
-        mWriter.validateDisplay(mPrimaryDisplay);
+        mWriter.validateDisplay(mPrimaryDisplay, ComposerClientWriter::kNoTimestamp);
         execute();
 
-        std::vector<int64_t> changedCompositionLayers;
-        std::vector<Composition> changedCompositionTypes;
-        mReader.takeChangedCompositionTypes(mPrimaryDisplay, &changedCompositionLayers,
-                                            &changedCompositionTypes);
-        if (!changedCompositionLayers.empty()) {
+        if (!mReader.takeChangedCompositionTypes(mPrimaryDisplay).empty()) {
             GTEST_SUCCEED();
             return;
         }
@@ -377,14 +367,10 @@
                                       mDisplayWidth, mDisplayHeight, mPixelFormat, mDataspace);
         ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
 
-        mWriter.validateDisplay(mPrimaryDisplay);
+        mWriter.validateDisplay(mPrimaryDisplay, ComposerClientWriter::kNoTimestamp);
         execute();
 
-        std::vector<int64_t> changedCompositionLayers;
-        std::vector<Composition> changedCompositionTypes;
-        mReader.takeChangedCompositionTypes(mPrimaryDisplay, &changedCompositionLayers,
-                                            &changedCompositionTypes);
-        if (!changedCompositionLayers.empty()) {
+        if (!mReader.takeChangedCompositionTypes(mPrimaryDisplay).empty()) {
             GTEST_SUCCEED();
             return;
         }
@@ -433,7 +419,8 @@
         return;
     }
 
-    aidl::android::hardware::common::NativeHandle bufferHandle = ::android::dupToAidl(nullptr);
+    aidl::android::hardware::common::NativeHandle bufferHandle =
+            ::android::dupToAidl(mGraphicBuffer->handle);
     ndk::ScopedFileDescriptor releaseFence = ndk::ScopedFileDescriptor(-1);
     const auto error =
             mComposerClient->setReadbackBuffer(mPrimaryDisplay, bufferHandle, releaseFence);
@@ -492,17 +479,13 @@
         ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
         writeLayers(layers);
         ASSERT_TRUE(mReader.takeErrors().empty());
-        mWriter.validateDisplay(mPrimaryDisplay);
+        mWriter.validateDisplay(mPrimaryDisplay, ComposerClientWriter::kNoTimestamp);
         execute();
 
-        std::vector<int64_t> changedCompositionLayers;
-        std::vector<Composition> changedCompositionTypes;
-        mReader.takeChangedCompositionTypes(mPrimaryDisplay, &changedCompositionLayers,
-                                            &changedCompositionTypes);
-        if (!changedCompositionLayers.empty()) {
-            ASSERT_EQ(1, changedCompositionLayers.size());
+        auto changedCompositionTypes = mReader.takeChangedCompositionTypes(mPrimaryDisplay);
+        if (!changedCompositionTypes.empty()) {
             ASSERT_EQ(1, changedCompositionTypes.size());
-            ASSERT_EQ(Composition::CLIENT, changedCompositionTypes[0]);
+            ASSERT_EQ(Composition::CLIENT, changedCompositionTypes[0].composition);
 
             PixelFormat clientFormat = PixelFormat::RGBA_8888;
             auto clientUsage = static_cast<uint32_t>(
@@ -537,9 +520,8 @@
             mWriter.setClientTarget(mPrimaryDisplay, 0, mGraphicBuffer->handle, fenceHandle.get(),
                                     clientDataspace, std::vector<common::Rect>(1, damage));
             execute();
-            mReader.takeChangedCompositionTypes(mPrimaryDisplay, &changedCompositionLayers,
-                                                &changedCompositionTypes);
-            ASSERT_TRUE(changedCompositionLayers.empty());
+            changedCompositionTypes = mReader.takeChangedCompositionTypes(mPrimaryDisplay);
+            ASSERT_TRUE(changedCompositionTypes.empty());
         }
         ASSERT_TRUE(mReader.takeErrors().empty());
 
@@ -606,18 +588,15 @@
         clientLayer->setDisplayFrame(clientFrame);
         clientLayer->setZOrder(0);
         clientLayer->write(mWriter);
-        mWriter.validateDisplay(mPrimaryDisplay);
+        mWriter.validateDisplay(mPrimaryDisplay, ComposerClientWriter::kNoTimestamp);
         execute();
 
-        std::vector<int64_t> changedCompositionLayers;
-        std::vector<Composition> changedCompositionTypes;
-        mReader.takeChangedCompositionTypes(mPrimaryDisplay, &changedCompositionLayers,
-                                            &changedCompositionTypes);
+        auto changedCompositionTypes = mReader.takeChangedCompositionTypes(mPrimaryDisplay);
         if (changedCompositionTypes.size() != 1) {
             continue;
         }
         // create client target buffer
-        ASSERT_EQ(Composition::CLIENT, changedCompositionTypes[0]);
+        ASSERT_EQ(Composition::CLIENT, changedCompositionTypes[0].composition);
         mGraphicBuffer->reallocate(static_cast<uint32_t>(mDisplayWidth),
                                    static_cast<uint32_t>(mDisplayHeight),
                                    static_cast<int32_t>(common::PixelFormat::RGBA_8888),
@@ -642,9 +621,8 @@
         mWriter.setClientTarget(mPrimaryDisplay, 0, mGraphicBuffer->handle, fenceHandle.get(),
                                 clientDataspace, std::vector<common::Rect>(1, clientFrame));
         execute();
-        mReader.takeChangedCompositionTypes(mPrimaryDisplay, &changedCompositionLayers,
-                                            &changedCompositionTypes);
-        ASSERT_EQ(0, changedCompositionLayers.size());
+        changedCompositionTypes = mReader.takeChangedCompositionTypes(mPrimaryDisplay);
+        ASSERT_TRUE(changedCompositionTypes.empty());
         ASSERT_TRUE(mReader.takeErrors().empty());
 
         mWriter.presentDisplay(mPrimaryDisplay);
@@ -685,13 +663,9 @@
 
         writeLayers(layers);
         ASSERT_TRUE(mReader.takeErrors().empty());
-        mWriter.validateDisplay(mPrimaryDisplay);
+        mWriter.validateDisplay(mPrimaryDisplay, ComposerClientWriter::kNoTimestamp);
         execute();
-        std::vector<int64_t> changedCompositionLayers;
-        std::vector<Composition> changedCompositionTypes;
-        mReader.takeChangedCompositionTypes(mPrimaryDisplay, &changedCompositionLayers,
-                                            &changedCompositionTypes);
-        if (!changedCompositionLayers.empty()) {
+        if (!mReader.takeChangedCompositionTypes(mPrimaryDisplay).empty()) {
             GTEST_SUCCEED();
             return;
         }
@@ -715,13 +689,10 @@
 
         writeLayers(layers);
         ASSERT_TRUE(mReader.takeErrors().empty());
-        mWriter.validateDisplay(mPrimaryDisplay);
+        mWriter.validateDisplay(mPrimaryDisplay, ComposerClientWriter::kNoTimestamp);
         execute();
         ASSERT_TRUE(mReader.takeErrors().empty());
-        mReader.takeChangedCompositionTypes(mPrimaryDisplay, &changedCompositionLayers,
-                                            &changedCompositionTypes);
-        ASSERT_TRUE(changedCompositionLayers.empty());
-        ASSERT_TRUE(changedCompositionTypes.empty());
+        ASSERT_TRUE(mReader.takeChangedCompositionTypes(mPrimaryDisplay).empty());
         mWriter.presentDisplay(mPrimaryDisplay);
         execute();
         ASSERT_TRUE(mReader.takeErrors().empty());
@@ -756,13 +727,9 @@
 
         writeLayers(layers);
         ASSERT_TRUE(mReader.takeErrors().empty());
-        mWriter.validateDisplay(mPrimaryDisplay);
+        mWriter.validateDisplay(mPrimaryDisplay, ComposerClientWriter::kNoTimestamp);
         execute();
-        std::vector<int64_t> changedCompositionLayers;
-        std::vector<Composition> changedCompositionTypes;
-        mReader.takeChangedCompositionTypes(mPrimaryDisplay, &changedCompositionLayers,
-                                            &changedCompositionTypes);
-        if (!changedCompositionLayers.empty()) {
+        if (!mReader.takeChangedCompositionTypes(mPrimaryDisplay).empty()) {
             GTEST_SUCCEED();
             return;
         }
@@ -819,13 +786,9 @@
         ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
         writeLayers(layers);
         ASSERT_TRUE(mReader.takeErrors().empty());
-        mWriter.validateDisplay(mPrimaryDisplay);
+        mWriter.validateDisplay(mPrimaryDisplay, ComposerClientWriter::kNoTimestamp);
         execute();
-        std::vector<int64_t> changedCompositionLayers;
-        std::vector<Composition> changedCompositionTypes;
-        mReader.takeChangedCompositionTypes(mPrimaryDisplay, &changedCompositionLayers,
-                                            &changedCompositionTypes);
-        if (!changedCompositionLayers.empty()) {
+        if (!mReader.takeChangedCompositionTypes(mPrimaryDisplay).empty()) {
             GTEST_SUCCEED();
             return;
         }
@@ -877,13 +840,9 @@
 
         writeLayers(layers);
         ASSERT_TRUE(mReader.takeErrors().empty());
-        mWriter.validateDisplay(mPrimaryDisplay);
+        mWriter.validateDisplay(mPrimaryDisplay, ComposerClientWriter::kNoTimestamp);
         execute();
-        std::vector<int64_t> changedCompositionLayers;
-        std::vector<Composition> changedCompositionTypes;
-        mReader.takeChangedCompositionTypes(mPrimaryDisplay, &changedCompositionLayers,
-                                            &changedCompositionTypes);
-        if (!changedCompositionLayers.empty()) {
+        if (!mReader.takeChangedCompositionTypes(mPrimaryDisplay).empty()) {
             GTEST_SUCCEED();
             return;
         }
@@ -902,12 +861,9 @@
 
         writeLayers(layers);
         ASSERT_TRUE(mReader.takeErrors().empty());
-        mWriter.validateDisplay(mPrimaryDisplay);
+        mWriter.validateDisplay(mPrimaryDisplay, ComposerClientWriter::kNoTimestamp);
         execute();
-        mReader.takeChangedCompositionTypes(mPrimaryDisplay, &changedCompositionLayers,
-                                            &changedCompositionTypes);
-        ASSERT_TRUE(changedCompositionLayers.empty());
-        ASSERT_TRUE(changedCompositionTypes.empty());
+        ASSERT_TRUE(mReader.takeChangedCompositionTypes(mPrimaryDisplay).empty());
         ASSERT_TRUE(mReader.takeErrors().empty());
         mWriter.presentDisplay(mPrimaryDisplay);
         execute();
@@ -966,35 +922,30 @@
 
         auto layer = mLayers[1];
         BlendMode blendMode = layer->getBlendMode();
-        float alpha = mTopLayerColor.a / 255.0f * layer->getAlpha();
+        float alpha = mTopLayerColor.a * layer->getAlpha();
         if (blendMode == BlendMode::NONE) {
             for (auto& expectedColor : expectedColors) {
-                expectedColor.r = mTopLayerColor.r * static_cast<int8_t>(layer->getAlpha());
-                expectedColor.g = mTopLayerColor.g * static_cast<int8_t>(layer->getAlpha());
-                expectedColor.b = mTopLayerColor.b * static_cast<int8_t>(layer->getAlpha());
-                expectedColor.a = static_cast<int8_t>(alpha * 255.0);
+                expectedColor.r = mTopLayerColor.r * layer->getAlpha();
+                expectedColor.g = mTopLayerColor.g * layer->getAlpha();
+                expectedColor.b = mTopLayerColor.b * layer->getAlpha();
+                expectedColor.a = alpha;
             }
         } else if (blendMode == BlendMode::PREMULTIPLIED) {
             for (auto& expectedColor : expectedColors) {
-                expectedColor.r = static_cast<int8_t>(
-                        mTopLayerColor.r * static_cast<int8_t>(layer->getAlpha()) +
-                        mBackgroundColor.r * (1.0 - alpha));
-                expectedColor.g = static_cast<int8_t>(mTopLayerColor.g * layer->getAlpha() +
-                                                      mBackgroundColor.g * (1.0 - alpha));
-                expectedColor.b = static_cast<int8_t>(mTopLayerColor.b * layer->getAlpha() +
-                                                      mBackgroundColor.b * (1.0 - alpha));
-                expectedColor.a = static_cast<int8_t>(alpha + mBackgroundColor.a * (1.0 - alpha));
+                expectedColor.r =
+                        mTopLayerColor.r * layer->getAlpha() + mBackgroundColor.r * (1.0f - alpha);
+                expectedColor.g =
+                        mTopLayerColor.g * layer->getAlpha() + mBackgroundColor.g * (1.0f - alpha);
+                expectedColor.b =
+                        mTopLayerColor.b * layer->getAlpha() + mBackgroundColor.b * (1.0f - alpha);
+                expectedColor.a = alpha + mBackgroundColor.a * (1.0f - alpha);
             }
         } else if (blendMode == BlendMode::COVERAGE) {
             for (auto& expectedColor : expectedColors) {
-                expectedColor.r = static_cast<int8_t>(mTopLayerColor.r * alpha +
-                                                      mBackgroundColor.r * (1.0 - alpha));
-                expectedColor.g = static_cast<int8_t>(mTopLayerColor.g * alpha +
-                                                      mBackgroundColor.g * (1.0 - alpha));
-                expectedColor.b = static_cast<int8_t>(mTopLayerColor.b * alpha +
-                                                      mBackgroundColor.b * (1.0 - alpha));
-                expectedColor.a = static_cast<int8_t>(mTopLayerColor.a * alpha +
-                                                      mBackgroundColor.a * (1.0 - alpha));
+                expectedColor.r = mTopLayerColor.r * alpha + mBackgroundColor.r * (1.0f - alpha);
+                expectedColor.g = mTopLayerColor.g * alpha + mBackgroundColor.g * (1.0f - alpha);
+                expectedColor.b = mTopLayerColor.b * alpha + mBackgroundColor.b * (1.0f - alpha);
+                expectedColor.a = mTopLayerColor.a * alpha + mBackgroundColor.a * (1.0f - alpha);
             }
         }
     }
@@ -1027,13 +978,9 @@
         ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
         writeLayers(mLayers);
         ASSERT_TRUE(mReader.takeErrors().empty());
-        mWriter.validateDisplay(mPrimaryDisplay);
+        mWriter.validateDisplay(mPrimaryDisplay, ComposerClientWriter::kNoTimestamp);
         execute();
-        std::vector<int64_t> changedCompositionLayers;
-        std::vector<Composition> changedCompositionTypes;
-        mReader.takeChangedCompositionTypes(mPrimaryDisplay, &changedCompositionLayers,
-                                            &changedCompositionTypes);
-        if (!changedCompositionLayers.empty()) {
+        if (!mReader.takeChangedCompositionTypes(mPrimaryDisplay).empty()) {
             GTEST_SUCCEED();
             return;
         }
@@ -1072,13 +1019,9 @@
         ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
         writeLayers(mLayers);
         ASSERT_TRUE(mReader.takeErrors().empty());
-        mWriter.validateDisplay(mPrimaryDisplay);
+        mWriter.validateDisplay(mPrimaryDisplay, ComposerClientWriter::kNoTimestamp);
         execute();
-        std::vector<int64_t> changedCompositionLayers;
-        std::vector<Composition> changedCompositionTypes;
-        mReader.takeChangedCompositionTypes(mPrimaryDisplay, &changedCompositionLayers,
-                                            &changedCompositionTypes);
-        if (!changedCompositionLayers.empty()) {
+        if (!mReader.takeChangedCompositionTypes(mPrimaryDisplay).empty()) {
             GTEST_SUCCEED();
             return;
         }
@@ -1112,13 +1055,9 @@
         ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
         writeLayers(mLayers);
         ASSERT_TRUE(mReader.takeErrors().empty());
-        mWriter.validateDisplay(mPrimaryDisplay);
+        mWriter.validateDisplay(mPrimaryDisplay, ComposerClientWriter::kNoTimestamp);
         execute();
-        std::vector<int64_t> changedCompositionLayers;
-        std::vector<Composition> changedCompositionTypes;
-        mReader.takeChangedCompositionTypes(mPrimaryDisplay, &changedCompositionLayers,
-                                            &changedCompositionTypes);
-        if (!changedCompositionLayers.empty()) {
+        if (!mReader.takeChangedCompositionTypes(mPrimaryDisplay).empty()) {
             GTEST_SUCCEED();
             return;
         }
@@ -1139,7 +1078,7 @@
         GraphicsCompositionTest::SetUp();
 
         auto backgroundLayer = std::make_shared<TestColorLayer>(mComposerClient, mPrimaryDisplay);
-        backgroundLayer->setColor({0, 0, 0, 0});
+        backgroundLayer->setColor({0.0f, 0.0f, 0.0f, 0.0f});
         backgroundLayer->setDisplayFrame({0, 0, mDisplayWidth, mDisplayHeight});
         backgroundLayer->setZOrder(0);
 
@@ -1195,13 +1134,9 @@
 
         writeLayers(mLayers);
         ASSERT_TRUE(mReader.takeErrors().empty());
-        mWriter.validateDisplay(mPrimaryDisplay);
+        mWriter.validateDisplay(mPrimaryDisplay, ComposerClientWriter::kNoTimestamp);
         execute();
-        std::vector<int64_t> changedCompositionLayers;
-        std::vector<Composition> changedCompositionTypes;
-        mReader.takeChangedCompositionTypes(mPrimaryDisplay, &changedCompositionLayers,
-                                            &changedCompositionTypes);
-        if (!changedCompositionLayers.empty()) {
+        if (!mReader.takeChangedCompositionTypes(mPrimaryDisplay).empty()) {
             GTEST_SUCCEED();
             return;
         }
@@ -1241,13 +1176,9 @@
 
         writeLayers(mLayers);
         ASSERT_TRUE(mReader.takeErrors().empty());
-        mWriter.validateDisplay(mPrimaryDisplay);
+        mWriter.validateDisplay(mPrimaryDisplay, ComposerClientWriter::kNoTimestamp);
         execute();
-        std::vector<int64_t> changedCompositionLayers;
-        std::vector<Composition> changedCompositionTypes;
-        mReader.takeChangedCompositionTypes(mPrimaryDisplay, &changedCompositionLayers,
-                                            &changedCompositionTypes);
-        if (!changedCompositionLayers.empty()) {
+        if (!mReader.takeChangedCompositionTypes(mPrimaryDisplay).empty()) {
             GTEST_SUCCEED();
             return;
         }
@@ -1287,12 +1218,9 @@
 
         writeLayers(mLayers);
         ASSERT_TRUE(mReader.takeErrors().empty());
-        mWriter.validateDisplay(mPrimaryDisplay);
+        mWriter.validateDisplay(mPrimaryDisplay, ComposerClientWriter::kNoTimestamp);
         execute();
-        std::vector<int64_t> layers;
-        std::vector<Composition> types;
-        mReader.takeChangedCompositionTypes(mPrimaryDisplay, &layers, &types);
-        if (!layers.empty()) {
+        if (!mReader.takeChangedCompositionTypes(mPrimaryDisplay).empty()) {
             GTEST_SUCCEED();
             return;
         }
diff --git a/graphics/composer/aidl/android/hardware/graphics/composer3/vts/functional/VtsHalGraphicsComposer3_TargetTest.cpp b/graphics/composer/aidl/android/hardware/graphics/composer3/vts/functional/VtsHalGraphicsComposer3_TargetTest.cpp
index 1f30475..1cfd3f9 100644
--- a/graphics/composer/aidl/android/hardware/graphics/composer3/vts/functional/VtsHalGraphicsComposer3_TargetTest.cpp
+++ b/graphics/composer/aidl/android/hardware/graphics/composer3/vts/functional/VtsHalGraphicsComposer3_TargetTest.cpp
@@ -17,6 +17,7 @@
 #include <android/hardware/graphics/composer3/ComposerClientWriter.h>
 #include <binder/ProcessState.h>
 #include <gtest/gtest.h>
+#include <ui/Fence.h>
 #include <ui/GraphicBuffer.h>
 #include <ui/PixelFormat.h>
 #include <algorithm>
@@ -567,37 +568,6 @@
     }
 }
 
-/*
- * Test that if brightness operations are supported, setDisplayBrightness works as expected.
- */
-TEST_P(GraphicsComposerAidlTest, setDisplayBrightness) {
-    std::vector<DisplayCapability> capabilities;
-    auto error = mComposerClient->getDisplayCapabilities(mPrimaryDisplay, &capabilities);
-    ASSERT_TRUE(error.isOk());
-    bool brightnessSupport = std::find(capabilities.begin(), capabilities.end(),
-                                       DisplayCapability::BRIGHTNESS) != capabilities.end();
-    if (!brightnessSupport) {
-        EXPECT_EQ(mComposerClient->setDisplayBrightness(mPrimaryDisplay, 0.5f)
-                          .getServiceSpecificError(),
-                  IComposerClient::EX_UNSUPPORTED);
-        GTEST_SUCCEED() << "Brightness operations are not supported";
-        return;
-    }
-
-    EXPECT_TRUE(mComposerClient->setDisplayBrightness(mPrimaryDisplay, 0.0f).isOk());
-    EXPECT_TRUE(mComposerClient->setDisplayBrightness(mPrimaryDisplay, 0.5f).isOk());
-    EXPECT_TRUE(mComposerClient->setDisplayBrightness(mPrimaryDisplay, 1.0f).isOk());
-    EXPECT_TRUE(mComposerClient->setDisplayBrightness(mPrimaryDisplay, -1.0f).isOk());
-
-    error = mComposerClient->setDisplayBrightness(mPrimaryDisplay, +2.0f);
-    EXPECT_FALSE(error.isOk());
-    EXPECT_EQ(error.getServiceSpecificError(), IComposerClient::EX_BAD_PARAMETER);
-
-    error = mComposerClient->setDisplayBrightness(mPrimaryDisplay, -2.0f);
-    EXPECT_FALSE(error.isOk());
-    EXPECT_EQ(error.getServiceSpecificError(), IComposerClient::EX_BAD_PARAMETER);
-}
-
 TEST_P(GraphicsComposerAidlTest, getDisplayConnectionType) {
     DisplayConnectionType type;
     EXPECT_FALSE(mComposerClient->getDisplayConnectionType(mInvalidDisplayId, &type).isOk());
@@ -746,6 +716,61 @@
     }
 }
 
+TEST_P(GraphicsComposerAidlTest, setBootDisplayConfig_BadDisplay) {
+    int32_t config = 0;
+    auto const error = mComposerClient->setBootDisplayConfig(mInvalidDisplayId, config);
+
+    EXPECT_FALSE(error.isOk());
+    EXPECT_EQ(IComposerClient::EX_BAD_DISPLAY, error.getServiceSpecificError());
+}
+
+TEST_P(GraphicsComposerAidlTest, setBootDisplayConfig_BadConfig) {
+    for (VtsDisplay& display : mDisplays) {
+        int32_t invalidConfigId = GetInvalidConfigId();
+        const auto error = mComposerClient->setBootDisplayConfig(display.get(), invalidConfigId);
+        EXPECT_FALSE(error.isOk());
+        EXPECT_EQ(IComposerClient::EX_BAD_CONFIG, error.getServiceSpecificError());
+    }
+}
+
+TEST_P(GraphicsComposerAidlTest, setBootDisplayConfig) {
+    std::vector<int32_t> configs;
+    EXPECT_TRUE(mComposerClient->getDisplayConfigs(mPrimaryDisplay, &configs).isOk());
+    for (auto config : configs) {
+        EXPECT_TRUE(mComposerClient->setBootDisplayConfig(mPrimaryDisplay, config).isOk());
+    }
+}
+
+TEST_P(GraphicsComposerAidlTest, clearBootDisplayConfig_BadDisplay) {
+    auto const error = mComposerClient->clearBootDisplayConfig(mInvalidDisplayId);
+
+    EXPECT_FALSE(error.isOk());
+    EXPECT_EQ(IComposerClient::EX_BAD_DISPLAY, error.getServiceSpecificError());
+}
+
+TEST_P(GraphicsComposerAidlTest, clearBootDisplayConfig) {
+    EXPECT_TRUE(mComposerClient->clearBootDisplayConfig(mPrimaryDisplay).isOk());
+}
+
+TEST_P(GraphicsComposerAidlTest, getPreferredBootDisplayConfig_BadDisplay) {
+    int32_t config;
+    auto const error = mComposerClient->getPreferredBootDisplayConfig(mInvalidDisplayId, &config);
+
+    EXPECT_FALSE(error.isOk());
+    EXPECT_EQ(IComposerClient::EX_BAD_DISPLAY, error.getServiceSpecificError());
+}
+
+TEST_P(GraphicsComposerAidlTest, getPreferredBootDisplayConfig) {
+    int32_t preferredDisplayConfig = 0;
+    auto const error = mComposerClient->getPreferredBootDisplayConfig(mPrimaryDisplay,
+                                                                      &preferredDisplayConfig);
+    EXPECT_TRUE(error.isOk());
+
+    std::vector<int32_t> configs;
+    EXPECT_TRUE(mComposerClient->getDisplayConfigs(mPrimaryDisplay, &configs).isOk());
+    EXPECT_NE(configs.end(), std::find(configs.begin(), configs.end(), preferredDisplayConfig));
+}
+
 TEST_P(GraphicsComposerAidlTest, setAutoLowLatencyModeBadDisplay) {
     EXPECT_EQ(IComposerClient::EX_BAD_DISPLAY,
               mComposerClient->setAutoLowLatencyMode(mInvalidDisplayId, true)
@@ -840,28 +865,6 @@
     Test_setContentType(ContentType::GAME, "GAME");
 }
 
-TEST_P(GraphicsComposerAidlTest, getLayerGenericMetadataKeys) {
-    std::vector<LayerGenericMetadataKey> keys;
-    EXPECT_TRUE(mComposerClient->getLayerGenericMetadataKeys(&keys).isOk());
-
-    std::regex reverseDomainName("^[a-zA-Z-]{2,}(\\.[a-zA-Z0-9-]+)+$");
-    std::unordered_set<std::string> uniqueNames;
-    for (const auto& key : keys) {
-        std::string name(key.name);
-
-        // Keys must not start with 'android' or 'com.android'
-        EXPECT_FALSE(name.find("android") == 0);
-        EXPECT_FALSE(name.find("com.android") == 0);
-
-        // Keys must be in reverse domain name format
-        EXPECT_TRUE(std::regex_match(name, reverseDomainName));
-
-        // Keys must be unique within this list
-        const auto& [iter, inserted] = uniqueNames.insert(name);
-        EXPECT_TRUE(inserted);
-    }
-}
-
 TEST_P(GraphicsComposerAidlTest, CreateVirtualDisplay) {
     int32_t maxVirtualDisplayCount;
     EXPECT_TRUE(mComposerClient->getMaxVirtualDisplayCount(&maxVirtualDisplayCount).isOk());
@@ -956,6 +959,33 @@
     EXPECT_TRUE(mComposerClient->getDisplayName(mPrimaryDisplay, &displayName).isOk());
 }
 
+TEST_P(GraphicsComposerAidlTest, GetDisplayPhysicalOrientationBadDisplay) {
+    Transform displayOrientation;
+    const auto error =
+            mComposerClient->getDisplayPhysicalOrientation(mInvalidDisplayId, &displayOrientation);
+
+    EXPECT_FALSE(error.isOk());
+    ASSERT_EQ(IComposerClient::EX_BAD_DISPLAY, error.getServiceSpecificError());
+}
+
+TEST_P(GraphicsComposerAidlTest, GetDisplayPhysicalOrientation) {
+    const auto allowedDisplayOrientations = std::array<Transform, 4>{
+            Transform::NONE,
+            Transform::ROT_90,
+            Transform::ROT_180,
+            Transform::ROT_270,
+    };
+
+    Transform displayOrientation;
+    const auto error =
+            mComposerClient->getDisplayPhysicalOrientation(mPrimaryDisplay, &displayOrientation);
+
+    EXPECT_TRUE(error.isOk());
+    EXPECT_NE(std::find(allowedDisplayOrientations.begin(), allowedDisplayOrientations.end(),
+                        displayOrientation),
+              allowedDisplayOrientations.end());
+}
+
 TEST_P(GraphicsComposerAidlTest, SetClientTargetSlotCount) {
     EXPECT_TRUE(
             mComposerClient->setClientTargetSlotCount(mPrimaryDisplay, kBufferSlotCount).isOk());
@@ -993,14 +1023,14 @@
 
 TEST_P(GraphicsComposerAidlTest, SetPowerModeUnsupported) {
     std::vector<DisplayCapability> capabilities;
-    const auto error = mComposerClient->getDisplayCapabilities(mPrimaryDisplay, &capabilities);
+    auto error = mComposerClient->getDisplayCapabilities(mPrimaryDisplay, &capabilities);
     ASSERT_TRUE(error.isOk());
     const bool isDozeSupported = std::find(capabilities.begin(), capabilities.end(),
                                            DisplayCapability::DOZE) != capabilities.end();
     const bool isSuspendSupported = std::find(capabilities.begin(), capabilities.end(),
                                               DisplayCapability::SUSPEND) != capabilities.end();
     if (!isDozeSupported) {
-        auto error = mComposerClient->setPowerMode(mPrimaryDisplay, PowerMode::DOZE);
+        error = mComposerClient->setPowerMode(mPrimaryDisplay, PowerMode::DOZE);
         EXPECT_FALSE(error.isOk());
         EXPECT_EQ(IComposerClient::EX_UNSUPPORTED, error.getServiceSpecificError());
 
@@ -1010,7 +1040,7 @@
     }
 
     if (!isSuspendSupported) {
-        auto error = mComposerClient->setPowerMode(mPrimaryDisplay, PowerMode::ON_SUSPEND);
+        error = mComposerClient->setPowerMode(mPrimaryDisplay, PowerMode::ON_SUSPEND);
         EXPECT_FALSE(error.isOk());
         EXPECT_EQ(IComposerClient::EX_UNSUPPORTED, error.getServiceSpecificError());
 
@@ -1163,13 +1193,7 @@
     void TearDown() override {
         const auto errors = mReader.takeErrors();
         ASSERT_TRUE(mReader.takeErrors().empty());
-
-        std::vector<int64_t> layers;
-        std::vector<Composition> types;
-        mReader.takeChangedCompositionTypes(mPrimaryDisplay, &layers, &types);
-
-        ASSERT_TRUE(layers.empty());
-        ASSERT_TRUE(types.empty());
+        ASSERT_TRUE(mReader.takeChangedCompositionTypes(mPrimaryDisplay).empty());
 
         ASSERT_NO_FATAL_FAILURE(GraphicsComposerAidlTest::TearDown());
     }
@@ -1185,7 +1209,7 @@
         const auto status = mComposerClient->executeCommands(commands, &results);
         ASSERT_TRUE(status.isOk()) << "executeCommands failed " << status.getDescription();
 
-        mReader.parse(results);
+        mReader.parse(std::move(results));
         mWriter.reset();
     }
 
@@ -1283,7 +1307,7 @@
             mWriter.setLayerBuffer(display.get(), layer, 0, buffer->handle, -1);
             mWriter.setLayerDataspace(display.get(), layer, common::Dataspace::UNKNOWN);
 
-            mWriter.validateDisplay(display.get());
+            mWriter.validateDisplay(display.get(), ComposerClientWriter::kNoTimestamp);
             execute();
             ASSERT_TRUE(mReader.takeErrors().empty());
 
@@ -1299,7 +1323,7 @@
             mWriter.setLayerBuffer(display.get(), layer, 0, buffer->handle, -1);
             mWriter.setLayerSurfaceDamage(display.get(), layer,
                                           std::vector<Rect>(1, {0, 0, 10, 10}));
-            mWriter.validateDisplay(display.get());
+            mWriter.validateDisplay(display.get(), ComposerClientWriter::kNoTimestamp);
             execute();
             ASSERT_TRUE(mReader.takeErrors().empty());
 
@@ -1310,6 +1334,55 @@
         ASSERT_NO_FATAL_FAILURE(destroyLayer(display, layer));
     }
 
+    sp<::android::Fence> presentAndGetFence(
+            std::optional<ClockMonotonicTimestamp> expectedPresentTime) {
+        mWriter.validateDisplay(mPrimaryDisplay, expectedPresentTime);
+        execute();
+        EXPECT_TRUE(mReader.takeErrors().empty());
+
+        mWriter.presentDisplay(mPrimaryDisplay);
+        execute();
+        EXPECT_TRUE(mReader.takeErrors().empty());
+
+        auto presentFence = mReader.takePresentFence(mPrimaryDisplay);
+        // take ownership
+        const int fenceOwner = presentFence.get();
+        *presentFence.getR() = -1;
+        EXPECT_NE(-1, fenceOwner);
+        return sp<::android::Fence>::make(fenceOwner);
+    }
+
+    int32_t getVsyncPeriod() {
+        int32_t activeConfig;
+        EXPECT_TRUE(mComposerClient->getActiveConfig(mPrimaryDisplay, &activeConfig).isOk());
+
+        int32_t vsyncPeriod;
+        EXPECT_TRUE(mComposerClient
+                            ->getDisplayAttribute(mPrimaryDisplay, activeConfig,
+                                                  DisplayAttribute::VSYNC_PERIOD, &vsyncPeriod)
+                            .isOk());
+        return vsyncPeriod;
+    }
+
+    int64_t createOnScreenLayer() {
+        const int64_t layer = createLayer(mDisplays[0]);
+        mWriter.setLayerCompositionType(mPrimaryDisplay, layer, Composition::DEVICE);
+        mWriter.setLayerDisplayFrame(mPrimaryDisplay, layer, {0, 0, mDisplayWidth, mDisplayHeight});
+        mWriter.setLayerPlaneAlpha(mPrimaryDisplay, layer, 1);
+        mWriter.setLayerSourceCrop(
+                mPrimaryDisplay, layer,
+                {0, 0, static_cast<float>(mDisplayWidth), static_cast<float>(mDisplayHeight)});
+        mWriter.setLayerTransform(mPrimaryDisplay, layer, static_cast<Transform>(0));
+        mWriter.setLayerVisibleRegion(mPrimaryDisplay, layer,
+                                      std::vector<Rect>(1, {0, 0, mDisplayWidth, mDisplayHeight}));
+        mWriter.setLayerZOrder(mPrimaryDisplay, layer, 10);
+        mWriter.setLayerBlendMode(mPrimaryDisplay, layer, BlendMode::NONE);
+        mWriter.setLayerSurfaceDamage(mPrimaryDisplay, layer,
+                                      std::vector<Rect>(1, {0, 0, mDisplayWidth, mDisplayHeight}));
+        mWriter.setLayerDataspace(mPrimaryDisplay, layer, common::Dataspace::UNKNOWN);
+        return layer;
+    }
+
     void Test_setActiveConfigWithConstraints(const TestParameters& params) {
         for (VtsDisplay& display : mDisplays) {
             forEachTwoConfigs(display.get(), [&](int32_t config1, int32_t config2) {
@@ -1400,6 +1473,46 @@
         }
     }
 
+    void Test_expectedPresentTime(std::optional<int> framesDelay) {
+        ASSERT_TRUE(mComposerClient->setPowerMode(mPrimaryDisplay, PowerMode::ON).isOk());
+
+        const auto vsyncPeriod = getVsyncPeriod();
+
+        const auto buffer1 = allocate();
+        const auto buffer2 = allocate();
+        ASSERT_NE(nullptr, buffer1);
+        ASSERT_NE(nullptr, buffer2);
+
+        const auto layer = createOnScreenLayer();
+        mWriter.setLayerBuffer(mPrimaryDisplay, layer, 0, buffer1->handle, -1);
+        const sp<::android::Fence> presentFence1 =
+                presentAndGetFence(ComposerClientWriter::kNoTimestamp);
+        presentFence1->waitForever(LOG_TAG);
+
+        auto expectedPresentTime = presentFence1->getSignalTime() + vsyncPeriod;
+        if (framesDelay.has_value()) {
+            expectedPresentTime += *framesDelay * vsyncPeriod;
+        }
+
+        mWriter.setLayerBuffer(mPrimaryDisplay, layer, 0, buffer2->handle, -1);
+        const auto setExpectedPresentTime = [&]() -> std::optional<ClockMonotonicTimestamp> {
+            if (!framesDelay.has_value()) {
+                return ComposerClientWriter::kNoTimestamp;
+            } else if (*framesDelay == 0) {
+                return ClockMonotonicTimestamp{0};
+            }
+            return ClockMonotonicTimestamp{expectedPresentTime};
+        }();
+
+        const sp<::android::Fence> presentFence2 = presentAndGetFence(setExpectedPresentTime);
+        presentFence2->waitForever(LOG_TAG);
+
+        const auto actualPresentTime = presentFence2->getSignalTime();
+        EXPECT_GE(actualPresentTime, expectedPresentTime - vsyncPeriod / 2);
+
+        ASSERT_TRUE(mComposerClient->setPowerMode(mPrimaryDisplay, PowerMode::OFF).isOk());
+    }
+
     // clang-format off
     const std::array<float, 16> kIdentity = {{
             1.0f, 0.0f, 0.0f, 0.0f,
@@ -1414,7 +1527,7 @@
 };
 
 TEST_P(GraphicsComposerAidlCommandTest, SET_COLOR_TRANSFORM) {
-    mWriter.setColorTransform(mPrimaryDisplay, kIdentity.data(), ColorTransform::IDENTITY);
+    mWriter.setColorTransform(mPrimaryDisplay, kIdentity.data());
     execute();
 }
 
@@ -1431,6 +1544,55 @@
     }
 }
 
+TEST_P(GraphicsComposerAidlCommandTest, SetDisplayBrightness) {
+    std::vector<DisplayCapability> capabilities;
+    auto error = mComposerClient->getDisplayCapabilities(mPrimaryDisplay, &capabilities);
+    ASSERT_TRUE(error.isOk());
+    bool brightnessSupport = std::find(capabilities.begin(), capabilities.end(),
+                                       DisplayCapability::BRIGHTNESS) != capabilities.end();
+    if (!brightnessSupport) {
+        mWriter.setDisplayBrightness(mPrimaryDisplay, 0.5f);
+        execute();
+        const auto errors = mReader.takeErrors();
+        EXPECT_EQ(1, errors.size());
+        EXPECT_EQ(EX_UNSUPPORTED_OPERATION, errors[0].errorCode);
+        GTEST_SUCCEED() << "SetDisplayBrightness is not supported";
+        return;
+    }
+
+    mWriter.setDisplayBrightness(mPrimaryDisplay, 0.0f);
+    execute();
+    EXPECT_TRUE(mReader.takeErrors().empty());
+
+    mWriter.setDisplayBrightness(mPrimaryDisplay, 0.5f);
+    execute();
+    EXPECT_TRUE(mReader.takeErrors().empty());
+
+    mWriter.setDisplayBrightness(mPrimaryDisplay, 1.0f);
+    execute();
+    EXPECT_TRUE(mReader.takeErrors().empty());
+
+    mWriter.setDisplayBrightness(mPrimaryDisplay, -1.0f);
+    execute();
+    EXPECT_TRUE(mReader.takeErrors().empty());
+
+    mWriter.setDisplayBrightness(mPrimaryDisplay, 2.0f);
+    execute();
+    {
+        const auto errors = mReader.takeErrors();
+        ASSERT_EQ(1, errors.size());
+        EXPECT_EQ(IComposerClient::EX_BAD_PARAMETER, errors[0].errorCode);
+    }
+
+    mWriter.setDisplayBrightness(mPrimaryDisplay, -2.0f);
+    execute();
+    {
+        const auto errors = mReader.takeErrors();
+        ASSERT_EQ(1, errors.size());
+        EXPECT_EQ(IComposerClient::EX_BAD_PARAMETER, errors[0].errorCode);
+    }
+}
+
 TEST_P(GraphicsComposerAidlCommandTest, SET_CLIENT_TARGET) {
     EXPECT_TRUE(
             mComposerClient->setClientTargetSlotCount(mPrimaryDisplay, kBufferSlotCount).isOk());
@@ -1462,19 +1624,19 @@
 }
 
 TEST_P(GraphicsComposerAidlCommandTest, VALIDATE_DISPLAY) {
-    mWriter.validateDisplay(mPrimaryDisplay);
+    mWriter.validateDisplay(mPrimaryDisplay, ComposerClientWriter::kNoTimestamp);
     execute();
 }
 
 TEST_P(GraphicsComposerAidlCommandTest, ACCEPT_DISPLAY_CHANGES) {
-    mWriter.validateDisplay(mPrimaryDisplay);
+    mWriter.validateDisplay(mPrimaryDisplay, ComposerClientWriter::kNoTimestamp);
     mWriter.acceptDisplayChanges(mPrimaryDisplay);
     execute();
 }
 
 // TODO(b/208441745) fix the test failure
 TEST_P(GraphicsComposerAidlCommandTest, PRESENT_DISPLAY) {
-    mWriter.validateDisplay(mPrimaryDisplay);
+    mWriter.validateDisplay(mPrimaryDisplay, ComposerClientWriter::kNoTimestamp);
     mWriter.presentDisplay(mPrimaryDisplay);
     execute();
 }
@@ -1523,12 +1685,9 @@
         mWriter.setLayerBuffer(mPrimaryDisplay, layer, 0, handle, -1);
         mWriter.setLayerDataspace(mPrimaryDisplay, layer, Dataspace::UNKNOWN);
 
-        mWriter.validateDisplay(mPrimaryDisplay);
+        mWriter.validateDisplay(mPrimaryDisplay, ComposerClientWriter::kNoTimestamp);
         execute();
-        std::vector<int64_t> layers;
-        std::vector<Composition> types;
-        mReader.takeChangedCompositionTypes(mPrimaryDisplay, &layers, &types);
-        if (!layers.empty()) {
+        if (!mReader.takeChangedCompositionTypes(mPrimaryDisplay).empty()) {
             GTEST_SUCCEED() << "Composition change requested, skipping test";
             return;
         }
@@ -1570,13 +1729,11 @@
     mWriter.setLayerBlendMode(mPrimaryDisplay, layer, BlendMode::NONE);
     mWriter.setLayerSurfaceDamage(mPrimaryDisplay, layer, std::vector<Rect>(1, displayFrame));
     mWriter.setLayerDataspace(mPrimaryDisplay, layer, Dataspace::UNKNOWN);
-    mWriter.validateDisplay(mPrimaryDisplay);
+    mWriter.validateDisplay(mPrimaryDisplay, ComposerClientWriter::kNoTimestamp);
 
     execute();
-    std::vector<int64_t> layers;
-    std::vector<Composition> types;
-    mReader.takeChangedCompositionTypes(mPrimaryDisplay, &layers, &types);
-    if (!layers.empty()) {
+
+    if (!mReader.takeChangedCompositionTypes(mPrimaryDisplay).empty()) {
         GTEST_SUCCEED() << "Composition change requested, skipping test";
         return;
     }
@@ -1587,7 +1744,7 @@
     execute();
 
     mWriter.setLayerCursorPosition(mPrimaryDisplay, layer, 0, 0);
-    mWriter.validateDisplay(mPrimaryDisplay);
+    mWriter.validateDisplay(mPrimaryDisplay, ComposerClientWriter::kNoTimestamp);
     mWriter.presentDisplay(mPrimaryDisplay);
     execute();
 }
@@ -1623,6 +1780,26 @@
     ASSERT_TRUE(mReader.takeErrors().empty());
 }
 
+TEST_P(GraphicsComposerAidlCommandTest, SET_LAYER_BLOCKING_REGION) {
+    int64_t layer;
+    EXPECT_TRUE(mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount, &layer).isOk());
+
+    Rect empty{0, 0, 0, 0};
+    Rect unit{0, 0, 1, 1};
+
+    mWriter.setLayerBlockingRegion(mPrimaryDisplay, layer, std::vector<Rect>(1, empty));
+    execute();
+    ASSERT_TRUE(mReader.takeErrors().empty());
+
+    mWriter.setLayerBlockingRegion(mPrimaryDisplay, layer, std::vector<Rect>(1, unit));
+    execute();
+    ASSERT_TRUE(mReader.takeErrors().empty());
+
+    mWriter.setLayerBlockingRegion(mPrimaryDisplay, layer, std::vector<Rect>());
+    execute();
+    ASSERT_TRUE(mReader.takeErrors().empty());
+}
+
 TEST_P(GraphicsComposerAidlCommandTest, SET_LAYER_BLEND_MODE) {
     int64_t layer;
     EXPECT_TRUE(mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount, &layer).isOk());
@@ -1644,13 +1821,11 @@
     int64_t layer;
     EXPECT_TRUE(mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount, &layer).isOk());
 
-    mWriter.setLayerColor(mPrimaryDisplay, layer,
-                          Color{static_cast<int8_t>(0xff), static_cast<int8_t>(0xff),
-                                static_cast<int8_t>(0xff), static_cast<int8_t>(0xff)});
+    mWriter.setLayerColor(mPrimaryDisplay, layer, Color{1.0f, 1.0f, 1.0f, 1.0f});
     execute();
     ASSERT_TRUE(mReader.takeErrors().empty());
 
-    mWriter.setLayerColor(mPrimaryDisplay, layer, Color{0, 0, 0, 0});
+    mWriter.setLayerColor(mPrimaryDisplay, layer, Color{0.0f, 0.0f, 0.0f, 0.0f});
     execute();
     ASSERT_TRUE(mReader.takeErrors().empty());
 }
@@ -1947,6 +2122,18 @@
     }
 }
 
+TEST_P(GraphicsComposerAidlCommandTest, expectedPresentTime_NoTimestamp) {
+    ASSERT_NO_FATAL_FAILURE(Test_expectedPresentTime(std::nullopt));
+}
+
+TEST_P(GraphicsComposerAidlCommandTest, expectedPresentTime_0) {
+    ASSERT_NO_FATAL_FAILURE(Test_expectedPresentTime(0));
+}
+
+TEST_P(GraphicsComposerAidlCommandTest, expectedPresentTime_5) {
+    ASSERT_NO_FATAL_FAILURE(Test_expectedPresentTime(5));
+}
+
 GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(GraphicsComposerAidlCommandTest);
 INSTANTIATE_TEST_SUITE_P(
         PerInstance, GraphicsComposerAidlCommandTest,
diff --git a/graphics/composer/aidl/android/hardware/graphics/composer3/vts/functional/composer-vts/ReadbackVts.cpp b/graphics/composer/aidl/android/hardware/graphics/composer3/vts/functional/composer-vts/ReadbackVts.cpp
index 4de2d71..ee597a1 100644
--- a/graphics/composer/aidl/android/hardware/graphics/composer3/vts/functional/composer-vts/ReadbackVts.cpp
+++ b/graphics/composer/aidl/android/hardware/graphics/composer3/vts/functional/composer-vts/ReadbackVts.cpp
@@ -22,6 +22,7 @@
 #include <aidl/android/hardware/graphics/common/BufferUsage.h>
 #include "include/RenderEngineVts.h"
 #include "renderengine/ExternalTexture.h"
+#include "renderengine/impl/ExternalTexture.h"
 
 // TODO(b/129481165): remove the #pragma below and fix conversion issues
 #pragma clang diagnostic pop  // ignored "-Wconversion
@@ -131,12 +132,12 @@
 
             int offset = (row * static_cast<int32_t>(stride) + col) * bytesPerPixel;
             uint8_t* pixelColor = (uint8_t*)bufferData + offset;
-            pixelColor[0] = static_cast<uint8_t>(srcColor.r);
-            pixelColor[1] = static_cast<uint8_t>(srcColor.g);
-            pixelColor[2] = static_cast<uint8_t>(srcColor.b);
+            pixelColor[0] = static_cast<uint8_t>(std::round(255.0f * srcColor.r));
+            pixelColor[1] = static_cast<uint8_t>(std::round(255.0f * srcColor.g));
+            pixelColor[2] = static_cast<uint8_t>(std::round(255.0f * srcColor.b));
 
             if (bytesPerPixel == 4) {
-                pixelColor[3] = static_cast<uint8_t>(srcColor.a);
+                pixelColor[3] = static_cast<uint8_t>(std::round(255.0f * srcColor.a));
             }
         }
     }
@@ -184,13 +185,11 @@
             auto pixel = row * static_cast<int32_t>(width) + col;
             int offset = (row * stride + col) * bytesPerPixel;
             uint8_t* pixelColor = (uint8_t*)bufferData + offset;
+            const Color expectedColor = expectedColors[static_cast<size_t>(pixel)];
 
-            ASSERT_EQ(static_cast<int8_t>(expectedColors[static_cast<size_t>(pixel)].r),
-                      pixelColor[0]);
-            ASSERT_EQ(static_cast<int8_t>(expectedColors[static_cast<size_t>(pixel)].g),
-                      pixelColor[1]);
-            ASSERT_EQ(static_cast<int8_t>(expectedColors[static_cast<size_t>(pixel)].b),
-                      pixelColor[2]);
+            ASSERT_EQ(std::round(255.0f * expectedColor.r), pixelColor[0]);
+            ASSERT_EQ(std::round(255.0f * expectedColor.g), pixelColor[1]);
+            ASSERT_EQ(std::round(255.0f * expectedColor.b), pixelColor[2]);
         }
     }
 }
@@ -242,13 +241,13 @@
 
     int outBytesPerPixel;
     int outBytesPerStride;
-    auto status = mGraphicBuffer->lockAsync(mUsage, mAccessRegion, nullptr, fenceHandle.get(),
+    void* bufData = nullptr;
+    auto status = mGraphicBuffer->lockAsync(mUsage, mAccessRegion, &bufData, fenceHandle.get(),
                                             &outBytesPerPixel, &outBytesPerStride);
     EXPECT_EQ(::android::OK, status);
     ASSERT_TRUE(mPixelFormat == PixelFormat::RGB_888 || mPixelFormat == PixelFormat::RGBA_8888);
-    ReadbackHelper::compareColorBuffers(expectedColors, mGraphicBuffer.get(),
-                                        static_cast<int32_t>(mStride), mWidth, mHeight,
-                                        mPixelFormat);
+    ReadbackHelper::compareColorBuffers(expectedColors, bufData, static_cast<int32_t>(mStride),
+                                        mWidth, mHeight, mPixelFormat);
     status = mGraphicBuffer->unlock();
     EXPECT_EQ(::android::OK, status);
 }
@@ -262,12 +261,8 @@
 LayerSettings TestColorLayer::toRenderEngineLayerSettings() {
     LayerSettings layerSettings = TestLayer::toRenderEngineLayerSettings();
 
-    layerSettings.source.solidColor =
-            ::android::half3(static_cast<::android::half>(mColor.r) / 255.0,
-                             static_cast<::android::half>(mColor.g) / 255.0,
-                             static_cast<::android::half>(mColor.b) / 255.0);
-    layerSettings.alpha =
-            mAlpha * static_cast<float>((static_cast<::android::half>(mColor.a) / 255.0));
+    layerSettings.source.solidColor = ::android::half3(mColor.r, mColor.g, mColor.b);
+    layerSettings.alpha = mAlpha * mColor.a;
     return layerSettings;
 }
 
@@ -306,12 +301,13 @@
 
 LayerSettings TestBufferLayer::toRenderEngineLayerSettings() {
     LayerSettings layerSettings = TestLayer::toRenderEngineLayerSettings();
-    layerSettings.source.buffer.buffer = std::make_shared<::android::renderengine::ExternalTexture>(
-            ::android::sp<::android::GraphicBuffer>::make(
-                    mGraphicBuffer->handle, ::android::GraphicBuffer::CLONE_HANDLE, mWidth, mHeight,
-                    static_cast<int32_t>(mPixelFormat), 1, mUsage, mStride),
-            mRenderEngine.getInternalRenderEngine(),
-            ::android::renderengine::ExternalTexture::Usage::READABLE);
+    layerSettings.source.buffer.buffer =
+            std::make_shared<::android::renderengine::impl::ExternalTexture>(
+                    ::android::sp<::android::GraphicBuffer>::make(
+                            mGraphicBuffer->handle, ::android::GraphicBuffer::CLONE_HANDLE, mWidth,
+                            mHeight, static_cast<int32_t>(mPixelFormat), 1, mUsage, mStride),
+                    mRenderEngine.getInternalRenderEngine(),
+                    ::android::renderengine::impl::ExternalTexture::Usage::READABLE);
 
     layerSettings.source.buffer.usePremultipliedAlpha = mBlendMode == BlendMode::PREMULTIPLIED;
 
diff --git a/graphics/composer/aidl/android/hardware/graphics/composer3/vts/functional/composer-vts/RenderEngineVts.cpp b/graphics/composer/aidl/android/hardware/graphics/composer3/vts/functional/composer-vts/RenderEngineVts.cpp
index 50ce462..6ff064f 100644
--- a/graphics/composer/aidl/android/hardware/graphics/composer3/vts/functional/composer-vts/RenderEngineVts.cpp
+++ b/graphics/composer/aidl/android/hardware/graphics/composer3/vts/functional/composer-vts/RenderEngineVts.cpp
@@ -15,6 +15,7 @@
  */
 
 #include "include/RenderEngineVts.h"
+#include "renderengine/impl/ExternalTexture.h"
 
 namespace aidl::android::hardware::graphics::composer3::vts {
 
@@ -62,9 +63,9 @@
                    std::back_insert_iterator(compositionLayers),
                    [](::android::renderengine::LayerSettings& settings)
                            -> ::android::renderengine::LayerSettings { return settings; });
-    auto texture = std::make_shared<::android::renderengine::ExternalTexture>(
+    auto texture = std::make_shared<::android::renderengine::impl::ExternalTexture>(
             mGraphicBuffer, *mRenderEngine,
-            ::android::renderengine::ExternalTexture::Usage::WRITEABLE);
+            ::android::renderengine::impl::ExternalTexture::Usage::WRITEABLE);
     auto [status, readyFence] = mRenderEngine
                                         ->drawLayers(mDisplaySettings, compositionLayers, texture,
                                                      true, std::move(bufferFence))
diff --git a/graphics/composer/aidl/android/hardware/graphics/composer3/vts/functional/composer-vts/include/ReadbackVts.h b/graphics/composer/aidl/android/hardware/graphics/composer3/vts/functional/composer-vts/include/ReadbackVts.h
index 60a036e..0fac2b3 100644
--- a/graphics/composer/aidl/android/hardware/graphics/composer3/vts/functional/composer-vts/include/ReadbackVts.h
+++ b/graphics/composer/aidl/android/hardware/graphics/composer3/vts/functional/composer-vts/include/ReadbackVts.h
@@ -41,13 +41,12 @@
 using common::PixelFormat;
 using IMapper2_1 = ::android::hardware::graphics::mapper::V2_1::IMapper;
 
-static const Color BLACK = {0, 0, 0, static_cast<int8_t>(0xff)};
-static const Color RED = {static_cast<int8_t>(0xff), 0, 0, static_cast<int8_t>(0xff)};
-static const Color TRANSLUCENT_RED = {static_cast<int8_t>(0xff), 0, 0, 0x33};
-static const Color GREEN = {0, static_cast<int8_t>(0xff), 0, static_cast<int8_t>(0xff)};
-static const Color BLUE = {0, 0, static_cast<int8_t>(0xff), static_cast<int8_t>(0xff)};
-static const Color WHITE = {static_cast<int8_t>(0xff), static_cast<int8_t>(0xff),
-                            static_cast<int8_t>(0xff), static_cast<int8_t>(0xff)};
+static const Color BLACK = {0.0f, 0.0f, 0.0f, 1.0f};
+static const Color RED = {1.0f, 0.0f, 0.0f, 1.0f};
+static const Color TRANSLUCENT_RED = {1.0f, 0.0f, 0.0f, 0.3f};
+static const Color GREEN = {0.0f, 1.0f, 0.0f, 1.0f};
+static const Color BLUE = {0.0f, 0.0f, 1.0f, 1.0f};
+static const Color WHITE = {1.0f, 1.0f, 1.0f, 1.0f};
 
 class TestRenderEngine;
 
diff --git a/graphics/composer/aidl/include/android/hardware/graphics/composer3/ComposerClientReader.h b/graphics/composer/aidl/include/android/hardware/graphics/composer3/ComposerClientReader.h
index 1dc9145..f9e35e9 100644
--- a/graphics/composer/aidl/include/android/hardware/graphics/composer3/ComposerClientReader.h
+++ b/graphics/composer/aidl/include/android/hardware/graphics/composer3/ComposerClientReader.h
@@ -26,40 +26,16 @@
 #include <inttypes.h>
 #include <string.h>
 
-#include <aidl/android/hardware/graphics/common/BlendMode.h>
 #include <aidl/android/hardware/graphics/composer3/ClientTargetProperty.h>
-#include <aidl/android/hardware/graphics/composer3/Color.h>
 #include <aidl/android/hardware/graphics/composer3/Composition.h>
-#include <aidl/android/hardware/graphics/composer3/FloatColor.h>
-#include <aidl/android/hardware/graphics/composer3/HandleIndex.h>
-#include <aidl/android/hardware/graphics/composer3/IComposer.h>
-#include <aidl/android/hardware/graphics/composer3/IComposerClient.h>
-#include <aidl/android/hardware/graphics/composer3/PerFrameMetadata.h>
-#include <aidl/android/hardware/graphics/composer3/PerFrameMetadataBlob.h>
-
 #include <aidl/android/hardware/graphics/composer3/CommandResultPayload.h>
-#include <aidl/android/hardware/graphics/composer3/DisplayCommand.h>
 
-#include <aidl/android/hardware/graphics/common/ColorTransform.h>
-#include <aidl/android/hardware/graphics/common/FRect.h>
-#include <aidl/android/hardware/graphics/common/Rect.h>
-#include <aidl/android/hardware/graphics/common/Transform.h>
 
 #include <log/log.h>
 #include <sync/sync.h>
 
-#include <aidlcommonsupport/NativeHandle.h>
 
-using aidl::android::hardware::graphics::common::BlendMode;
-using aidl::android::hardware::graphics::common::ColorTransform;
 using aidl::android::hardware::graphics::common::Dataspace;
-using aidl::android::hardware::graphics::common::FRect;
-using aidl::android::hardware::graphics::common::Rect;
-using aidl::android::hardware::graphics::common::Transform;
-
-using namespace aidl::android::hardware::graphics::composer3;
-
-using aidl::android::hardware::common::NativeHandle;
 
 namespace aidl::android::hardware::graphics::composer3 {
 
@@ -69,35 +45,37 @@
 
     // Parse and execute commands from the command queue.  The commands are
     // actually return values from the server and will be saved in ReturnData.
-    void parse(const std::vector<CommandResultPayload>& results) {
+    void parse(std::vector<CommandResultPayload>&& results) {
         resetData();
 
-        for (const auto& result : results) {
+        for (auto& result : results) {
             switch (result.getTag()) {
                 case CommandResultPayload::Tag::error:
-                    parseSetError(result.get<CommandResultPayload::Tag::error>());
+                    parseSetError(std::move(result.get<CommandResultPayload::Tag::error>()));
                     break;
                 case CommandResultPayload::Tag::changedCompositionTypes:
-                    parseSetChangedCompositionTypes(
-                            result.get<CommandResultPayload::Tag::changedCompositionTypes>());
+                    parseSetChangedCompositionTypes(std::move(
+                            result.get<CommandResultPayload::Tag::changedCompositionTypes>()));
                     break;
                 case CommandResultPayload::Tag::displayRequest:
                     parseSetDisplayRequests(
-                            result.get<CommandResultPayload::Tag::displayRequest>());
+                            std::move(result.get<CommandResultPayload::Tag::displayRequest>()));
                     break;
                 case CommandResultPayload::Tag::presentFence:
-                    parseSetPresentFence(result.get<CommandResultPayload::Tag::presentFence>());
+                    parseSetPresentFence(
+                            std::move(result.get<CommandResultPayload::Tag::presentFence>()));
                     break;
                 case CommandResultPayload::Tag::releaseFences:
-                    parseSetReleaseFences(result.get<CommandResultPayload::Tag::releaseFences>());
+                    parseSetReleaseFences(
+                            std::move(result.get<CommandResultPayload::Tag::releaseFences>()));
                     break;
                 case CommandResultPayload::Tag::presentOrValidateResult:
-                    parseSetPresentOrValidateDisplayResult(
-                            result.get<CommandResultPayload::Tag::presentOrValidateResult>());
+                    parseSetPresentOrValidateDisplayResult(std::move(
+                            result.get<CommandResultPayload::Tag::presentOrValidateResult>()));
                     break;
                 case CommandResultPayload::Tag::clientTargetProperty:
-                    parseSetClientTargetProperty(
-                            result.get<CommandResultPayload::Tag::clientTargetProperty>());
+                    parseSetClientTargetProperty(std::move(
+                            result.get<CommandResultPayload::Tag::clientTargetProperty>()));
                     break;
             }
         }
@@ -105,211 +83,140 @@
 
     std::vector<CommandError> takeErrors() { return std::move(mErrors); }
 
-    bool hasChanges(int64_t display, uint32_t* outNumChangedCompositionTypes,
+    void hasChanges(int64_t display, uint32_t* outNumChangedCompositionTypes,
                     uint32_t* outNumLayerRequestMasks) const {
         auto found = mReturnData.find(display);
         if (found == mReturnData.end()) {
             *outNumChangedCompositionTypes = 0;
             *outNumLayerRequestMasks = 0;
-            return false;
+            return;
         }
 
         const ReturnData& data = found->second;
 
-        *outNumChangedCompositionTypes = static_cast<uint32_t>(data.compositionTypes.size());
-        *outNumLayerRequestMasks = static_cast<uint32_t>(data.requestMasks.size());
-
-        return !(data.compositionTypes.empty() && data.requestMasks.empty());
+        *outNumChangedCompositionTypes = static_cast<uint32_t>(data.changedLayers.size());
+        *outNumLayerRequestMasks = static_cast<uint32_t>(data.displayRequests.layerRequests.size());
     }
 
     // Get and clear saved changed composition types.
-    void takeChangedCompositionTypes(int64_t display, std::vector<int64_t>* outLayers,
-                                     std::vector<Composition>* outTypes) {
+    std::vector<ChangedCompositionLayer> takeChangedCompositionTypes(int64_t display) {
         auto found = mReturnData.find(display);
         if (found == mReturnData.end()) {
-            outLayers->clear();
-            outTypes->clear();
-            return;
+            return {};
         }
 
         ReturnData& data = found->second;
-
-        *outLayers = std::move(data.changedLayers);
-        *outTypes = std::move(data.compositionTypes);
+        return std::move(data.changedLayers);
     }
 
     // Get and clear saved display requests.
-    void takeDisplayRequests(int64_t display, uint32_t* outDisplayRequestMask,
-                             std::vector<int64_t>* outLayers,
-                             std::vector<uint32_t>* outLayerRequestMasks) {
+    DisplayRequest takeDisplayRequests(int64_t display) {
         auto found = mReturnData.find(display);
         if (found == mReturnData.end()) {
-            *outDisplayRequestMask = 0;
-            outLayers->clear();
-            outLayerRequestMasks->clear();
-            return;
+            return {};
         }
 
         ReturnData& data = found->second;
-
-        *outDisplayRequestMask = data.displayRequests;
-        *outLayers = std::move(data.requestedLayers);
-        *outLayerRequestMasks = std::move(data.requestMasks);
+        return std::move(data.displayRequests);
     }
 
     // Get and clear saved release fences.
-    void takeReleaseFences(int64_t display, std::vector<int64_t>* outLayers,
-                           std::vector<int>* outReleaseFences) {
+    std::vector<ReleaseFences::Layer> takeReleaseFences(int64_t display) {
         auto found = mReturnData.find(display);
         if (found == mReturnData.end()) {
-            outLayers->clear();
-            outReleaseFences->clear();
-            return;
+            return {};
         }
 
         ReturnData& data = found->second;
-
-        *outLayers = std::move(data.releasedLayers);
-        *outReleaseFences = std::move(data.releaseFences);
+        return std::move(data.releasedLayers);
     }
 
     // Get and clear saved present fence.
-    void takePresentFence(int64_t display, int* outPresentFence) {
+    ndk::ScopedFileDescriptor takePresentFence(int64_t display) {
         auto found = mReturnData.find(display);
         if (found == mReturnData.end()) {
-            *outPresentFence = -1;
-            return;
+            return {};
         }
 
         ReturnData& data = found->second;
-
-        *outPresentFence = data.presentFence;
-        data.presentFence = -1;
+        return std::move(data.presentFence);
     }
 
     // Get what stage succeeded during PresentOrValidate: Present or Validate
-    void takePresentOrValidateStage(int64_t display, uint32_t* state) {
+    std::optional<PresentOrValidate::Result> takePresentOrValidateStage(int64_t display) {
         auto found = mReturnData.find(display);
         if (found == mReturnData.end()) {
-            *state = static_cast<uint32_t>(-1);
-            return;
+            return std::nullopt;
         }
         ReturnData& data = found->second;
-        *state = data.presentOrValidateState;
+        return data.presentOrValidateState;
     }
 
     // Get the client target properties requested by hardware composer.
-    void takeClientTargetProperty(int64_t display, ClientTargetProperty* outClientTargetProperty,
-                                  float* outWhitePointNits) {
+    ClientTargetPropertyWithNits takeClientTargetProperty(int64_t display) {
         auto found = mReturnData.find(display);
 
         // If not found, return the default values.
         if (found == mReturnData.end()) {
-            outClientTargetProperty->pixelFormat = common::PixelFormat::RGBA_8888;
-            outClientTargetProperty->dataspace = Dataspace::UNKNOWN;
-            *outWhitePointNits = -1.f;
-            return;
+            return ClientTargetPropertyWithNits{
+                    .clientTargetProperty = {common::PixelFormat::RGBA_8888, Dataspace::UNKNOWN},
+                    .whitePointNits = -1.f,
+            };
         }
 
         ReturnData& data = found->second;
-        *outClientTargetProperty = data.clientTargetProperty;
-        *outWhitePointNits = data.clientTargetWhitePointNits;
+        return std::move(data.clientTargetProperty);
     }
 
   private:
     void resetData() {
         mErrors.clear();
-
-        for (auto& data : mReturnData) {
-            if (data.second.presentFence >= 0) {
-                close(data.second.presentFence);
-            }
-            for (auto fence : data.second.releaseFences) {
-                if (fence >= 0) {
-                    close(fence);
-                }
-            }
-        }
-
         mReturnData.clear();
     }
 
-    void parseSetError(const CommandError& error) { mErrors.emplace_back(error); }
+    void parseSetError(CommandError&& error) { mErrors.emplace_back(error); }
 
-    void parseSetChangedCompositionTypes(const ChangedCompositionTypes& changedCompositionTypes) {
+    void parseSetChangedCompositionTypes(ChangedCompositionTypes&& changedCompositionTypes) {
         auto& data = mReturnData[changedCompositionTypes.display];
-
-        data.changedLayers.reserve(changedCompositionTypes.layers.size());
-        data.compositionTypes.reserve(changedCompositionTypes.layers.size());
-        for (const auto& layer : changedCompositionTypes.layers) {
-            data.changedLayers.push_back(layer.layer);
-            data.compositionTypes.push_back(layer.composition);
-        }
+        data.changedLayers = std::move(changedCompositionTypes.layers);
     }
 
-    void parseSetDisplayRequests(const DisplayRequest& displayRequest) {
+    void parseSetDisplayRequests(DisplayRequest&& displayRequest) {
         auto& data = mReturnData[displayRequest.display];
-
-        data.displayRequests = displayRequest.mask;
-        data.requestedLayers.reserve(displayRequest.layerRequests.size());
-        data.requestMasks.reserve(displayRequest.layerRequests.size());
-        for (const auto& layerRequest : displayRequest.layerRequests) {
-            data.requestedLayers.push_back(layerRequest.layer);
-            data.requestMasks.push_back(layerRequest.mask);
-        }
+        data.displayRequests = std::move(displayRequest);
     }
 
-    void parseSetPresentFence(const PresentFence& presentFence) {
+    void parseSetPresentFence(PresentFence&& presentFence) {
         auto& data = mReturnData[presentFence.display];
-        if (data.presentFence >= 0) {
-            close(data.presentFence);
-        }
-        data.presentFence = dup(presentFence.fence.get());
+        data.presentFence = std::move(presentFence.fence);
     }
 
-    void parseSetReleaseFences(const ReleaseFences& releaseFences) {
+    void parseSetReleaseFences(ReleaseFences&& releaseFences) {
         auto& data = mReturnData[releaseFences.display];
-        data.releasedLayers.reserve(releaseFences.layers.size());
-        data.releaseFences.reserve(releaseFences.layers.size());
-        for (const auto& layer : releaseFences.layers) {
-            data.releasedLayers.push_back(layer.layer);
-            data.releaseFences.push_back(dup(layer.fence.get()));
-        }
+        data.releasedLayers = std::move(releaseFences.layers);
     }
 
-    void parseSetPresentOrValidateDisplayResult(const PresentOrValidate& presentOrValidate) {
+    void parseSetPresentOrValidateDisplayResult(const PresentOrValidate&& presentOrValidate) {
         auto& data = mReturnData[presentOrValidate.display];
-        data.presentOrValidateState =
-                presentOrValidate.result == PresentOrValidate::Result::Presented ? 1 : 0;
+        data.presentOrValidateState = std::move(presentOrValidate.result);
     }
 
-    void parseSetClientTargetProperty(const ClientTargetPropertyWithNits& clientTargetProperty) {
+    void parseSetClientTargetProperty(const ClientTargetPropertyWithNits&& clientTargetProperty) {
         auto& data = mReturnData[clientTargetProperty.display];
-        data.clientTargetProperty.pixelFormat =
-                clientTargetProperty.clientTargetProperty.pixelFormat;
-        data.clientTargetProperty.dataspace = clientTargetProperty.clientTargetProperty.dataspace;
-        data.clientTargetWhitePointNits = clientTargetProperty.whitePointNits;
+        data.clientTargetProperty = std::move(clientTargetProperty);
     }
 
     struct ReturnData {
-        int32_t displayRequests = 0;
+        DisplayRequest displayRequests;
+        std::vector<ChangedCompositionLayer> changedLayers;
+        ndk::ScopedFileDescriptor presentFence;
+        std::vector<ReleaseFences::Layer> releasedLayers;
+        PresentOrValidate::Result presentOrValidateState;
 
-        std::vector<int64_t> changedLayers;
-        std::vector<Composition> compositionTypes;
-
-        std::vector<int64_t> requestedLayers;
-        std::vector<uint32_t> requestMasks;
-
-        int presentFence = -1;
-
-        std::vector<int64_t> releasedLayers;
-        std::vector<int> releaseFences;
-
-        uint32_t presentOrValidateState;
-
-        ClientTargetProperty clientTargetProperty{common::PixelFormat::RGBA_8888,
-                                                  Dataspace::UNKNOWN};
-        float clientTargetWhitePointNits = -1.f;
+        ClientTargetPropertyWithNits clientTargetProperty = {
+                .clientTargetProperty = {common::PixelFormat::RGBA_8888, Dataspace::UNKNOWN},
+                .whitePointNits = -1.f,
+        };
     };
 
     std::vector<CommandError> mErrors;
diff --git a/graphics/composer/aidl/include/android/hardware/graphics/composer3/ComposerClientWriter.h b/graphics/composer/aidl/include/android/hardware/graphics/composer3/ComposerClientWriter.h
index bd03673..d3266e7 100644
--- a/graphics/composer/aidl/include/android/hardware/graphics/composer3/ComposerClientWriter.h
+++ b/graphics/composer/aidl/include/android/hardware/graphics/composer3/ComposerClientWriter.h
@@ -29,10 +29,8 @@
 #include <aidl/android/hardware/graphics/common/BlendMode.h>
 #include <aidl/android/hardware/graphics/composer3/Color.h>
 #include <aidl/android/hardware/graphics/composer3/Composition.h>
-#include <aidl/android/hardware/graphics/composer3/FloatColor.h>
-#include <aidl/android/hardware/graphics/composer3/HandleIndex.h>
-#include <aidl/android/hardware/graphics/composer3/IComposer.h>
-#include <aidl/android/hardware/graphics/composer3/IComposerClient.h>
+#include <aidl/android/hardware/graphics/composer3/DisplayBrightness.h>
+#include <aidl/android/hardware/graphics/composer3/Luminance.h>
 #include <aidl/android/hardware/graphics/composer3/PerFrameMetadata.h>
 #include <aidl/android/hardware/graphics/composer3/PerFrameMetadataBlob.h>
 
@@ -63,6 +61,8 @@
 
 class ComposerClientWriter {
   public:
+    static constexpr std::optional<ClockMonotonicTimestamp> kNoTimestamp = std::nullopt;
+
     ComposerClientWriter() { reset(); }
 
     virtual ~ComposerClientWriter() { reset(); }
@@ -73,11 +73,15 @@
         mCommands.clear();
     }
 
-    void setColorTransform(int64_t display, const float* matrix, ColorTransform hint) {
-        ColorTransformPayload colorTransformPayload;
-        colorTransformPayload.matrix.assign(matrix, matrix + 16);
-        colorTransformPayload.hint = hint;
-        getDisplayCommand(display).colorTransform.emplace(std::move(colorTransformPayload));
+    void setColorTransform(int64_t display, const float* matrix) {
+        std::vector<float> matVec;
+        matVec.reserve(16);
+        matVec.assign(matrix, matrix + 16);
+        getDisplayCommand(display).colorTransformMatrix.emplace(std::move(matVec));
+    }
+
+    void setDisplayBrightness(int64_t display, float brightness) {
+        getDisplayCommand(display).brightness.emplace(DisplayBrightness{.brightness = brightness});
     }
 
     void setClientTarget(int64_t display, uint32_t slot, const native_handle_t* target,
@@ -95,10 +99,18 @@
                 getBuffer(slot, buffer, releaseFence));
     }
 
-    void validateDisplay(int64_t display) { getDisplayCommand(display).validateDisplay = true; }
+    void validateDisplay(int64_t display,
+                         std::optional<ClockMonotonicTimestamp> expectedPresentTime) {
+        auto& command = getDisplayCommand(display);
+        command.expectedPresentTime = expectedPresentTime;
+        command.validateDisplay = true;
+    }
 
-    void presentOrvalidateDisplay(int64_t display) {
-        getDisplayCommand(display).presentOrValidateDisplay = true;
+    void presentOrvalidateDisplay(int64_t display,
+                                  std::optional<ClockMonotonicTimestamp> expectedPresentTime) {
+        auto& command = getDisplayCommand(display);
+        command.expectedPresentTime = expectedPresentTime;
+        command.presentOrValidateDisplay = true;
     }
 
     void acceptDisplayChanges(int64_t display) {
@@ -197,22 +209,12 @@
                 .perFrameMetadataBlob.emplace(metadata.begin(), metadata.end());
     }
 
-    void setLayerFloatColor(int64_t display, int64_t layer, FloatColor color) {
-        getLayerCommand(display, layer).floatColor.emplace(color);
-    }
-
-    void setLayerGenericMetadata(int64_t display, int64_t layer, const std::string& key,
-                                 const bool mandatory, const std::vector<uint8_t>& value) {
-        GenericMetadata metadata;
-        metadata.key.name = key;
-        metadata.key.mandatory = mandatory;
-        metadata.value.assign(value.begin(), value.end());
-        getLayerCommand(display, layer).genericMetadata.emplace(std::move(metadata));
-    }
-
     void setLayerWhitePointNits(int64_t display, int64_t layer, float whitePointNits) {
-        getLayerCommand(display, layer)
-                .whitePointNits.emplace(WhitePointNits{.nits = whitePointNits});
+        getLayerCommand(display, layer).whitePointNits.emplace(Luminance{.nits = whitePointNits});
+    }
+
+    void setLayerBlockingRegion(int64_t display, int64_t layer, const std::vector<Rect>& blocking) {
+        getLayerCommand(display, layer).blockingRegion.emplace(blocking.begin(), blocking.end());
     }
 
     const std::vector<DisplayCommand>& getPendingCommands() {
diff --git a/graphics/composer/aidl/include/android/hardware/graphics/composer3/translate-ndk.h b/graphics/composer/aidl/include/android/hardware/graphics/composer3/translate-ndk.h
deleted file mode 100644
index 7004955..0000000
--- a/graphics/composer/aidl/include/android/hardware/graphics/composer3/translate-ndk.h
+++ /dev/null
@@ -1,87 +0,0 @@
-/**
- * Copyright (c) 2021, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include <limits>
-#include "aidl/android/hardware/graphics/common/BlendMode.h"
-#include "aidl/android/hardware/graphics/common/FRect.h"
-#include "aidl/android/hardware/graphics/common/Rect.h"
-#include "aidl/android/hardware/graphics/composer3/Capability.h"
-#include "aidl/android/hardware/graphics/composer3/ClientTargetProperty.h"
-#include "aidl/android/hardware/graphics/composer3/Color.h"
-#include "aidl/android/hardware/graphics/composer3/Composition.h"
-#include "aidl/android/hardware/graphics/composer3/ContentType.h"
-#include "aidl/android/hardware/graphics/composer3/DisplayAttribute.h"
-#include "aidl/android/hardware/graphics/composer3/DisplayCapability.h"
-#include "aidl/android/hardware/graphics/composer3/DisplayConnectionType.h"
-#include "aidl/android/hardware/graphics/composer3/FloatColor.h"
-#include "aidl/android/hardware/graphics/composer3/FormatColorComponent.h"
-#include "aidl/android/hardware/graphics/composer3/HandleIndex.h"
-#include "aidl/android/hardware/graphics/composer3/IComposer.h"
-#include "aidl/android/hardware/graphics/composer3/LayerGenericMetadataKey.h"
-#include "aidl/android/hardware/graphics/composer3/PerFrameMetadata.h"
-#include "aidl/android/hardware/graphics/composer3/PerFrameMetadataBlob.h"
-#include "aidl/android/hardware/graphics/composer3/PerFrameMetadataKey.h"
-#include "aidl/android/hardware/graphics/composer3/PowerMode.h"
-#include "aidl/android/hardware/graphics/composer3/VsyncPeriodChangeConstraints.h"
-#include "aidl/android/hardware/graphics/composer3/VsyncPeriodChangeTimeline.h"
-#include "android/hardware/graphics/composer/2.1/IComposer.h"
-#include "android/hardware/graphics/composer/2.1/IComposerCallback.h"
-#include "android/hardware/graphics/composer/2.1/IComposerClient.h"
-#include "android/hardware/graphics/composer/2.2/IComposerClient.h"
-#include "android/hardware/graphics/composer/2.3/IComposerClient.h"
-#include "android/hardware/graphics/composer/2.4/IComposerClient.h"
-#include "android/hardware/graphics/composer/2.4/types.h"
-
-namespace android::h2a {
-
-__attribute__((warn_unused_result)) bool translate(
-        const ::android::hardware::graphics::composer::V2_4::VsyncPeriodChangeTimeline& in,
-        aidl::android::hardware::graphics::composer3::VsyncPeriodChangeTimeline* out);
-__attribute__((warn_unused_result)) bool translate(
-        const ::android::hardware::graphics::composer::V2_1::IComposerClient::Rect& in,
-        aidl::android::hardware::graphics::common::Rect* out);
-__attribute__((warn_unused_result)) bool translate(
-        const ::android::hardware::graphics::composer::V2_1::IComposerClient::FRect& in,
-        aidl::android::hardware::graphics::common::FRect* out);
-__attribute__((warn_unused_result)) bool translate(
-        const ::android::hardware::graphics::composer::V2_1::IComposerClient::Color& in,
-        aidl::android::hardware::graphics::composer3::Color* out);
-__attribute__((warn_unused_result)) bool translate(
-        const ::android::hardware::graphics::composer::V2_3::IComposerClient::PerFrameMetadata& in,
-        aidl::android::hardware::graphics::composer3::PerFrameMetadata* out);
-__attribute__((warn_unused_result)) bool translate(
-        const ::android::hardware::graphics::composer::V2_2::IComposerClient::FloatColor& in,
-        aidl::android::hardware::graphics::composer3::FloatColor* out);
-__attribute__((warn_unused_result)) bool translate(
-        const ::android::hardware::graphics::composer::V2_3::IComposerClient::PerFrameMetadataBlob&
-                in,
-        aidl::android::hardware::graphics::composer3::PerFrameMetadataBlob* out);
-__attribute__((warn_unused_result)) bool translate(
-        const ::android::hardware::graphics::composer::V2_4::IComposerClient::
-                VsyncPeriodChangeConstraints& in,
-        aidl::android::hardware::graphics::composer3::VsyncPeriodChangeConstraints* out);
-__attribute__((warn_unused_result)) bool translate(
-        const ::android::hardware::graphics::composer::V2_4::IComposerClient::ClientTargetProperty&
-                in,
-        aidl::android::hardware::graphics::composer3::ClientTargetProperty* out);
-__attribute__((warn_unused_result)) bool translate(
-        const ::android::hardware::graphics::composer::V2_4::IComposerClient::
-                LayerGenericMetadataKey& in,
-        aidl::android::hardware::graphics::composer3::LayerGenericMetadataKey* out);
-
-}  // namespace android::h2a
diff --git a/health/2.1/vts/OWNERS b/health/2.1/vts/OWNERS
index 20450ba..a6803cd 100644
--- a/health/2.1/vts/OWNERS
+++ b/health/2.1/vts/OWNERS
@@ -1,3 +1,2 @@
 elsk@google.com
-hridya@google.com
 sspatil@google.com
diff --git a/health/aidl/Android.bp b/health/aidl/Android.bp
index 6e2f1d4..86bca69 100644
--- a/health/aidl/Android.bp
+++ b/health/aidl/Android.bp
@@ -37,7 +37,6 @@
             sdk_version: "module_current",
         },
         ndk: {
-            separate_platform_variant: false,
             vndk: {
                 enabled: true,
             },
@@ -63,9 +62,11 @@
         "android.hardware.health@2.0",
         "android.hardware.health@2.1",
     ],
-    defaults: [
-        "libbinder_ndk_host_user",
-    ],
+    target: {
+        darwin: {
+            enabled: false,
+        },
+    },
 }
 
 java_library {
diff --git a/health/aidl/default/Android.bp b/health/aidl/default/Android.bp
index 8aa7638..8eab997 100644
--- a/health/aidl/default/Android.bp
+++ b/health/aidl/default/Android.bp
@@ -120,6 +120,15 @@
     },
 }
 
+// Users of libhealth_aidl_impl should use this defaults.
+cc_defaults {
+    name: "libhealth_aidl_impl_user",
+    defaults: [
+        "libhealth_aidl_common_defaults",
+        "libhealth_aidl_charger_defaults",
+    ],
+}
+
 // AIDL version of android.hardware.health@2.1-service.
 // Default binder service of the health HAL.
 cc_defaults {
@@ -127,8 +136,7 @@
     relative_install_path: "hw",
     vintf_fragments: ["android.hardware.health-service.example.xml"],
     defaults: [
-        "libhealth_aidl_common_defaults",
-        "libhealth_aidl_charger_defaults",
+        "libhealth_aidl_impl_user",
     ],
     static_libs: [
         "libhealth_aidl_impl",
diff --git a/health/aidl/vts/functional/Android.bp b/health/aidl/vts/functional/Android.bp
index 434f565..d315c60 100644
--- a/health/aidl/vts/functional/Android.bp
+++ b/health/aidl/vts/functional/Android.bp
@@ -43,6 +43,7 @@
         "libhealthtest_headers",
     ],
     test_suites: [
+        "general-tests",
         "vts",
     ],
 }
diff --git a/health/utils/libhealthshim/Android.bp b/health/utils/libhealthshim/Android.bp
index 311e951..42e4ea7 100644
--- a/health/utils/libhealthshim/Android.bp
+++ b/health/utils/libhealthshim/Android.bp
@@ -24,9 +24,11 @@
 cc_defaults {
     name: "libhealthshim_defaults",
     host_supported: true, // for testing
-    defaults: [
-        "libbinder_ndk_host_user",
-    ],
+    target: {
+        darwin: {
+            enabled: false,
+        },
+    },
     cflags: [
         "-Wall",
         "-Werror",
diff --git a/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/Certificate.aidl b/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/Certificate.aidl
index d8a8128..83e1797 100644
--- a/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/Certificate.aidl
+++ b/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/Certificate.aidl
@@ -12,7 +12,8 @@
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
- *////////////////////////////////////////////////////////////////////////////////
+ */
+///////////////////////////////////////////////////////////////////////////////
 // THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
 ///////////////////////////////////////////////////////////////////////////////
 
diff --git a/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/CipherSuite.aidl b/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/CipherSuite.aidl
index 2685525..e6ec04e 100644
--- a/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/CipherSuite.aidl
+++ b/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/CipherSuite.aidl
@@ -12,7 +12,8 @@
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
- *////////////////////////////////////////////////////////////////////////////////
+ */
+///////////////////////////////////////////////////////////////////////////////
 // THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
 ///////////////////////////////////////////////////////////////////////////////
 
diff --git a/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/HardwareInformation.aidl b/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/HardwareInformation.aidl
index f8d5a9e..cd8d56b 100644
--- a/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/HardwareInformation.aidl
+++ b/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/HardwareInformation.aidl
@@ -12,7 +12,8 @@
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
- *////////////////////////////////////////////////////////////////////////////////
+ */
+///////////////////////////////////////////////////////////////////////////////
 // THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
 ///////////////////////////////////////////////////////////////////////////////
 
diff --git a/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/IIdentityCredential.aidl b/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/IIdentityCredential.aidl
index 3224e4b..5065641 100644
--- a/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/IIdentityCredential.aidl
+++ b/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/IIdentityCredential.aidl
@@ -12,7 +12,8 @@
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
- *////////////////////////////////////////////////////////////////////////////////
+ */
+///////////////////////////////////////////////////////////////////////////////
 // THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
 ///////////////////////////////////////////////////////////////////////////////
 
diff --git a/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/IIdentityCredentialStore.aidl b/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/IIdentityCredentialStore.aidl
index c6fb3c8..c912c52 100644
--- a/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/IIdentityCredentialStore.aidl
+++ b/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/IIdentityCredentialStore.aidl
@@ -12,7 +12,8 @@
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
- *////////////////////////////////////////////////////////////////////////////////
+ */
+///////////////////////////////////////////////////////////////////////////////
 // THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
 ///////////////////////////////////////////////////////////////////////////////
 
@@ -36,6 +37,7 @@
   android.hardware.identity.HardwareInformation getHardwareInformation();
   android.hardware.identity.IWritableIdentityCredential createCredential(in @utf8InCpp String docType, in boolean testCredential);
   android.hardware.identity.IIdentityCredential getCredential(in android.hardware.identity.CipherSuite cipherSuite, in byte[] credentialData);
+  android.hardware.identity.IPresentationSession createPresentationSession(in android.hardware.identity.CipherSuite cipherSuite);
   const int STATUS_OK = 0;
   const int STATUS_FAILED = 1;
   const int STATUS_CIPHER_SUITE_NOT_SUPPORTED = 2;
diff --git a/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/IPresentationSession.aidl b/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/IPresentationSession.aidl
new file mode 100644
index 0000000..705dc29
--- /dev/null
+++ b/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/IPresentationSession.aidl
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.identity;
+@VintfStability
+interface IPresentationSession {
+  byte[] getEphemeralKeyPair();
+  long getAuthChallenge();
+  void setReaderEphemeralPublicKey(in byte[] publicKey);
+  void setSessionTranscript(in byte[] sessionTranscript);
+  android.hardware.identity.IIdentityCredential getCredential(in byte[] credentialData);
+}
diff --git a/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/IWritableIdentityCredential.aidl b/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/IWritableIdentityCredential.aidl
index 19a29ec..9a0fa9e 100644
--- a/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/IWritableIdentityCredential.aidl
+++ b/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/IWritableIdentityCredential.aidl
@@ -12,7 +12,8 @@
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
- *////////////////////////////////////////////////////////////////////////////////
+ */
+///////////////////////////////////////////////////////////////////////////////
 // THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
 ///////////////////////////////////////////////////////////////////////////////
 
diff --git a/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/RequestDataItem.aidl b/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/RequestDataItem.aidl
index c9c2b9f..cec8e0c 100644
--- a/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/RequestDataItem.aidl
+++ b/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/RequestDataItem.aidl
@@ -12,7 +12,8 @@
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
- *////////////////////////////////////////////////////////////////////////////////
+ */
+///////////////////////////////////////////////////////////////////////////////
 // THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
 ///////////////////////////////////////////////////////////////////////////////
 
diff --git a/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/RequestNamespace.aidl b/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/RequestNamespace.aidl
index aaf1e20..05b9ec2 100644
--- a/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/RequestNamespace.aidl
+++ b/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/RequestNamespace.aidl
@@ -12,7 +12,8 @@
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
- *////////////////////////////////////////////////////////////////////////////////
+ */
+///////////////////////////////////////////////////////////////////////////////
 // THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
 ///////////////////////////////////////////////////////////////////////////////
 
diff --git a/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/SecureAccessControlProfile.aidl b/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/SecureAccessControlProfile.aidl
index 695fb3f..2003594 100644
--- a/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/SecureAccessControlProfile.aidl
+++ b/identity/aidl/aidl_api/android.hardware.identity/current/android/hardware/identity/SecureAccessControlProfile.aidl
@@ -12,7 +12,8 @@
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
- *////////////////////////////////////////////////////////////////////////////////
+ */
+///////////////////////////////////////////////////////////////////////////////
 // THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
 ///////////////////////////////////////////////////////////////////////////////
 
diff --git a/identity/aidl/android/hardware/identity/IIdentityCredential.aidl b/identity/aidl/android/hardware/identity/IIdentityCredential.aidl
index 8ae293b..84d6ed0 100644
--- a/identity/aidl/android/hardware/identity/IIdentityCredential.aidl
+++ b/identity/aidl/android/hardware/identity/IIdentityCredential.aidl
@@ -17,9 +17,9 @@
 package android.hardware.identity;
 
 import android.hardware.identity.Certificate;
+import android.hardware.identity.IWritableIdentityCredential;
 import android.hardware.identity.RequestNamespace;
 import android.hardware.identity.SecureAccessControlProfile;
-import android.hardware.identity.IWritableIdentityCredential;
 import android.hardware.keymaster.HardwareAuthToken;
 import android.hardware.keymaster.VerificationToken;
 
@@ -44,6 +44,9 @@
      * This method was deprecated in API version 3 because there's no challenge so freshness
      * can't be checked. Use deleteCredentalWithChallenge() instead.
      *
+     * If the method is called on an instance obtained via IPresentationSession.getCredential(),
+     * STATUS_FAILED must be returned.
+     *
      * @return a COSE_Sign1 signature described above
      * @deprecated use deleteCredentalWithChallenge() instead.
      */
@@ -60,6 +63,9 @@
      * This method may only be called once per instance. If called more than once, STATUS_FAILED
      * will be returned.
      *
+     * If the method is called on an instance obtained via IPresentationSession.getCredential(),
+     * STATUS_FAILED must be returned.
+     *
      * @return the private key, in DER format as specified in RFC 5915.
      */
     byte[] createEphemeralKeyPair();
@@ -70,6 +76,9 @@
      * This method may only be called once per instance. If called more than once, STATUS_FAILED
      * will be returned.
      *
+     * If the method is called on an instance obtained via IPresentationSession.getCredential(),
+     * STATUS_FAILED must be returned.
+     *
      * @param publicKey contains the reader's ephemeral public key, in uncompressed
      *        form (e.g. 0x04 || X || Y).
      */
@@ -83,6 +92,9 @@
      * This method may only be called once per instance. If called more than once, STATUS_FAILED
      * will be returned. If user authentication is not needed, this method may not be called.
      *
+     * If the method is called on an instance obtained via IPresentationSession.getCredential(),
+     * STATUS_FAILED must be returned.
+     *
      * @return challenge, a non-zero number.
      */
     long createAuthChallenge();
@@ -371,6 +383,9 @@
      * This CBOR enables an issuer to determine the exact state of the credential it
      * returns issuer-signed data for.
      *
+     * If the method is called on an instance obtained via IPresentationSession.getCredential(),
+     * STATUS_FAILED must be returned.
+     *
      * @param out signingKeyBlob contains an AES-GCM-ENC(storageKey, R, signingKey, docType)
      *     where signingKey is an EC private key in uncompressed form. That is, the returned
      *     blob is an encrypted copy of the newly-generated private signing key.
@@ -420,6 +435,9 @@
      *
      * This method was introduced in API version 3.
      *
+     * If the method is called on an instance obtained via IPresentationSession.getCredential(),
+     * STATUS_FAILED must be returned.
+     *
      * @param challenge a challenge set by the issuer to ensure freshness. Maximum size is 32 bytes
      *     and it may be empty. Fails with STATUS_INVALID_DATA if bigger than 32 bytes.
      * @return a COSE_Sign1 signature described above.
@@ -442,6 +460,9 @@
      *
      * This method was introduced in API version 3.
      *
+     * If the method is called on an instance obtained via IPresentationSession.getCredential(),
+     * STATUS_FAILED must be returned.
+     *
      * @param challenge a challenge set by the issuer to ensure freshness. Maximum size is 32 bytes
      *     and it may be empty. Fails with STATUS_INVALID_DATA if bigger than 32 bytes.
      * @return a COSE_Sign1 signature described above.
@@ -456,6 +477,9 @@
      *
      * This method was introduced in API version 3.
      *
+     * If the method is called on an instance obtained via IPresentationSession.getCredential(),
+     * STATUS_FAILED must be returned.
+     *
      * @return an IWritableIdentityCredential
      */
     IWritableIdentityCredential updateCredential();
diff --git a/identity/aidl/android/hardware/identity/IIdentityCredentialStore.aidl b/identity/aidl/android/hardware/identity/IIdentityCredentialStore.aidl
index 638be79..86be7f5 100644
--- a/identity/aidl/android/hardware/identity/IIdentityCredentialStore.aidl
+++ b/identity/aidl/android/hardware/identity/IIdentityCredentialStore.aidl
@@ -16,10 +16,11 @@
 
 package android.hardware.identity;
 
-import android.hardware.identity.IIdentityCredential;
-import android.hardware.identity.IWritableIdentityCredential;
-import android.hardware.identity.HardwareInformation;
 import android.hardware.identity.CipherSuite;
+import android.hardware.identity.HardwareInformation;
+import android.hardware.identity.IIdentityCredential;
+import android.hardware.identity.IPresentationSession;
+import android.hardware.identity.IWritableIdentityCredential;
 
 /**
  * IIdentityCredentialStore provides an interface to a secure store for user identity documents.
@@ -105,7 +106,7 @@
  * STATUS_* integers defined in this interface. Each method states which status can be returned
  * and under which circumstances.
  *
- * The API described here is API version 3 which corresponds to feature version 202101
+ * The API described here is API version 4 which corresponds to feature version 202201
  * of the android.security.identity Framework API. An XML file declaring the feature
  * android.hardware.identity_credential (or android.hardware.identity_credential.direct_access
  * if implementing the Direct Access HAL) should be included declaring this feature version.
@@ -241,4 +242,25 @@
      * @return an IIdentityCredential interface that provides operations on the Credential.
      */
     IIdentityCredential getCredential(in CipherSuite cipherSuite, in byte[] credentialData);
+
+    /**
+     * createPresentationSession creates IPresentationSession interface which can be used to
+     * present one or more credentials to a remote verifier device.
+     *
+     * The cipher suite used to communicate with the remote verifier must be specified. Currently
+     * only a single cipher-suite is supported. Support for other cipher suites may be added in a
+     * future version of this HAL. If the requested cipher suite is not support the call fails
+     * with STATUS_CIPHER_SUITE_NOT_SUPPORTED.
+     *
+     * In this version of the HAL, implementations are only required to support a single session
+     * being active. In a future version, implementations may be required to support multiple
+     * presentation sessions being active at the same time.
+     *
+     * This method was introduced in API version 4.
+     *
+     * @param cipherSuite The cipher suite to use.
+     *
+     * @return an IPresentationSession interface.
+     */
+    IPresentationSession createPresentationSession(in CipherSuite cipherSuite);
 }
diff --git a/identity/aidl/android/hardware/identity/IPresentationSession.aidl b/identity/aidl/android/hardware/identity/IPresentationSession.aidl
new file mode 100644
index 0000000..b0449f0
--- /dev/null
+++ b/identity/aidl/android/hardware/identity/IPresentationSession.aidl
@@ -0,0 +1,101 @@
+/*
+ * Copyright 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.identity;
+
+import android.hardware.identity.CipherSuite;
+import android.hardware.identity.IIdentityCredential;
+
+/**
+ * An interface to present multiple credentials in the same session.
+ *
+ * This interface was introduced in API version 4.
+ *
+ */
+@VintfStability
+interface IPresentationSession {
+    /**
+     * Gets the ephemeral EC key pair to be used in establishing a secure session with a reader.
+     * This method returns the private key so the caller can perform an ECDH key agreement operation
+     * with the reader.  The reason for generating the key pair in the secure environment is so that
+     * the secure environment knows what public key to expect to find in the session transcript
+     * when presenting credentials.
+     *
+     * The generated key matches the selected cipher suite of the presentation session (e.g. EC
+     * key using the P-256 curve).
+     *
+     * @return the private key, in DER format as specified in RFC 5915.
+     */
+    byte[] getEphemeralKeyPair();
+
+    /**
+     * Gets the challenge value to be used for proving successful user authentication. This
+     * is to be included in the authToken passed to the IIdentityCredential.startRetrieval()
+     * method and the verificationToken passed to the IIdentityCredential.setVerificationToken()
+     * method.
+     *
+     * @return challenge, a non-zero number.
+     */
+    long getAuthChallenge();
+
+    /**
+     * Sets the public part of the reader's ephemeral key pair to be used to complete
+     * an ECDH key agreement for the session.
+     *
+     * The curve of the key must match the curve for the key returned by getEphemeralKeyPair().
+     *
+     * This method may only be called once per instance. If called more than once, STATUS_FAILED
+     * must be returned.
+     *
+     * @param publicKey contains the reader's ephemeral public key, in uncompressed
+     *        form (e.g. 0x04 || X || Y).
+     */
+    void setReaderEphemeralPublicKey(in byte[] publicKey);
+
+    /**
+     * Sets the session transcript for the session.
+     *
+     * This can be empty but if it's non-empty it must be valid CBOR.
+     *
+     * This method may only be called once per instance. If called more than once, STATUS_FAILED
+     * must be returned.
+     *
+     * @param sessionTrancsript the session transcript.
+     */
+    void setSessionTranscript(in byte[] sessionTranscript);
+
+    /**
+     * getCredential() retrieves an IIdentityCredential interface for presentation in the
+     * current presentation session.
+     *
+     * On the returned instance only the methods startRetrieval(), startRetrieveEntryValue(),
+     * retrieveEntryValue(), finishRetrieval(), setRequestedNamespaces(), setVerificationToken()
+     * may be called. Other methods will fail with STATUS_FAILED.
+     *
+     * The implementation is expected to get the session transcript, ephemeral key, reader
+     * ephemeral key, and auth challenge from this instance.
+     *
+     * @param credentialData is a CBOR-encoded structure containing metadata about the credential
+     *     and an encrypted byte array that contains data used to secure the credential.  See the
+     *     return argument of the same name in IWritableIdentityCredential.finishAddingEntries().
+     *
+     *     Note that the format of credentialData may depend on the feature version.
+     *     Implementations must support credentialData created by an earlier feature version.
+     *
+     * @return an IIdentityCredential interface that provides operations on the Credential.
+     */
+    IIdentityCredential getCredential(in byte[] credentialData);
+}
diff --git a/identity/aidl/default/Android.bp b/identity/aidl/default/Android.bp
index 3de8d30..ca24afa 100644
--- a/identity/aidl/default/Android.bp
+++ b/identity/aidl/default/Android.bp
@@ -13,6 +13,7 @@
     srcs: [
         "common/IdentityCredential.cpp",
         "common/IdentityCredentialStore.cpp",
+        "common/PresentationSession.cpp",
         "common/WritableIdentityCredential.cpp",
     ],
     export_include_dirs: [
@@ -39,8 +40,8 @@
         "libsoft_attestation_cert",
         "libpuresoftkeymasterdevice",
         "android.hardware.identity-support-lib",
-        "android.hardware.identity-V3-ndk",
-        "android.hardware.keymaster-V3-ndk",
+        "android.hardware.identity-V4-ndk",
+        "android.hardware.keymaster-V4-ndk",
     ],
 }
 
@@ -49,6 +50,7 @@
     vendor_available: true,
     srcs: [
         "libeic/EicCbor.c",
+        "libeic/EicSession.c",
         "libeic/EicPresentation.c",
         "libeic/EicProvisioning.c",
         "EicOpsImpl.cc",
@@ -100,8 +102,8 @@
         "libsoft_attestation_cert",
         "libpuresoftkeymasterdevice",
         "android.hardware.identity-support-lib",
-        "android.hardware.identity-V3-ndk",
-        "android.hardware.keymaster-V3-ndk",
+        "android.hardware.identity-V4-ndk",
+        "android.hardware.keymaster-V4-ndk",
         "android.hardware.identity-libeic-hal-common",
         "android.hardware.identity-libeic-library",
     ],
diff --git a/identity/aidl/default/EicOpsImpl.cc b/identity/aidl/default/EicOpsImpl.cc
index 8ec4cc9..c98a91e 100644
--- a/identity/aidl/default/EicOpsImpl.cc
+++ b/identity/aidl/default/EicOpsImpl.cc
@@ -20,9 +20,13 @@
 #include <tuple>
 #include <vector>
 
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+#include <string.h>
+
 #include <android-base/logging.h>
 #include <android-base/stringprintf.h>
-#include <string.h>
 
 #include <android/hardware/identity/support/IdentityCredentialSupport.h>
 
@@ -63,6 +67,11 @@
     return strlen(s);
 }
 
+void* eicMemMem(const uint8_t* haystack, size_t haystackLen, const uint8_t* needle,
+                size_t needleLen) {
+    return memmem(haystack, haystackLen, needle, needleLen);
+}
+
 int eicCryptoMemCmp(const void* s1, const void* s2, size_t n) {
     return CRYPTO_memcmp(s1, s2, n);
 }
@@ -117,6 +126,25 @@
     return true;
 }
 
+bool eicNextId(uint32_t* id) {
+    uint32_t oldId = *id;
+    uint32_t newId = 0;
+
+    do {
+        union {
+            uint8_t value8;
+            uint32_t value32;
+        } value;
+        if (!eicOpsRandom(&value.value8, sizeof(value))) {
+            return false;
+        }
+        newId = value.value32;
+    } while (newId == oldId && newId == 0);
+
+    *id = newId;
+    return true;
+}
+
 bool eicOpsEncryptAes128Gcm(
         const uint8_t* key,    // Must be 16 bytes
         const uint8_t* nonce,  // Must be 12 bytes
diff --git a/identity/aidl/default/EicTests.cpp b/identity/aidl/default/EicTests.cpp
index a28080d..7b69b75 100644
--- a/identity/aidl/default/EicTests.cpp
+++ b/identity/aidl/default/EicTests.cpp
@@ -66,7 +66,8 @@
     // Then present data from it...
     //
     FakeSecureHardwarePresentationProxy presentationProxy;
-    ASSERT_TRUE(presentationProxy.initialize(isTestCredential, docType, credData.value()));
+    ASSERT_TRUE(presentationProxy.initialize(0 /* sessionId */, isTestCredential, docType,
+                                             credData.value()));
     AccessCheckResult res =
             presentationProxy.startRetrieveEntryValue(nameSpace, name, 1, content.size(), acpIds);
     ASSERT_EQ(res, AccessCheckResult::kNoAccessControlProfiles);
diff --git a/identity/aidl/default/FakeSecureHardwareProxy.cpp b/identity/aidl/default/FakeSecureHardwareProxy.cpp
index f0307dc..91e634c 100644
--- a/identity/aidl/default/FakeSecureHardwareProxy.cpp
+++ b/identity/aidl/default/FakeSecureHardwareProxy.cpp
@@ -23,6 +23,7 @@
 #include <android-base/logging.h>
 #include <android-base/stringprintf.h>
 #include <string.h>
+#include <map>
 
 #include <openssl/sha.h>
 
@@ -52,38 +53,110 @@
 
 // ----------------------------------------------------------------------
 
-FakeSecureHardwareProvisioningProxy::FakeSecureHardwareProvisioningProxy() {}
+// The singleton EicProvisioning object used everywhere.
+//
+EicProvisioning FakeSecureHardwareProvisioningProxy::ctx_;
 
-FakeSecureHardwareProvisioningProxy::~FakeSecureHardwareProvisioningProxy() {}
-
-bool FakeSecureHardwareProvisioningProxy::shutdown() {
-    LOG(INFO) << "FakeSecureHardwarePresentationProxy shutdown";
-    return true;
+FakeSecureHardwareProvisioningProxy::~FakeSecureHardwareProvisioningProxy() {
+    if (id_ != 0) {
+        shutdown();
+    }
 }
 
 bool FakeSecureHardwareProvisioningProxy::initialize(bool testCredential) {
-    LOG(INFO) << "FakeSecureHardwareProvisioningProxy created, sizeof(EicProvisioning): "
-              << sizeof(EicProvisioning);
-    return eicProvisioningInit(&ctx_, testCredential);
+    if (id_ != 0) {
+        LOG(WARNING) << "Proxy is already initialized";
+        return false;
+    }
+    bool initialized = eicProvisioningInit(&ctx_, testCredential);
+    if (!initialized) {
+        return false;
+    }
+    optional<uint32_t> id = getId();
+    if (!id) {
+        LOG(WARNING) << "Error getting id";
+        return false;
+    }
+    id_ = id.value();
+    return true;
 }
 
 bool FakeSecureHardwareProvisioningProxy::initializeForUpdate(
-        bool testCredential, string docType, vector<uint8_t> encryptedCredentialKeys) {
-    return eicProvisioningInitForUpdate(&ctx_, testCredential, docType.c_str(),
-                                        docType.size(),
-                                        encryptedCredentialKeys.data(),
-                                        encryptedCredentialKeys.size());
+        bool testCredential, const string& docType,
+        const vector<uint8_t>& encryptedCredentialKeys) {
+    if (id_ != 0) {
+        LOG(WARNING) << "Proxy is already initialized";
+        return false;
+    }
+    bool initialized = eicProvisioningInitForUpdate(&ctx_, testCredential, docType.c_str(),
+                                                    docType.size(), encryptedCredentialKeys.data(),
+                                                    encryptedCredentialKeys.size());
+    if (!initialized) {
+        return false;
+    }
+    optional<uint32_t> id = getId();
+    if (!id) {
+        LOG(WARNING) << "Error getting id";
+        return false;
+    }
+    id_ = id.value();
+    return true;
+}
+
+optional<uint32_t> FakeSecureHardwareProvisioningProxy::getId() {
+    uint32_t id;
+    if (!eicProvisioningGetId(&ctx_, &id)) {
+        return std::nullopt;
+    }
+    return id;
+}
+
+bool FakeSecureHardwareProvisioningProxy::validateId(const string& callerName) {
+    if (id_ == 0) {
+        LOG(WARNING) << "FakeSecureHardwareProvisioningProxy::" << callerName
+                     << ": While validating expected id is 0";
+        return false;
+    }
+    optional<uint32_t> id = getId();
+    if (!id) {
+        LOG(WARNING) << "FakeSecureHardwareProvisioningProxy::" << callerName
+                     << ": Error getting id for validating";
+        return false;
+    }
+    if (id.value() != id_) {
+        LOG(WARNING) << "FakeSecureHardwareProvisioningProxy::" << callerName
+                     << ": While validating expected id " << id_ << " but got " << id.value();
+        return false;
+    }
+    return true;
+}
+
+bool FakeSecureHardwareProvisioningProxy::shutdown() {
+    bool validated = validateId(__func__);
+    id_ = 0;
+    if (!validated) {
+        return false;
+    }
+    if (!eicProvisioningShutdown(&ctx_)) {
+        LOG(INFO) << "Error shutting down provisioning";
+        return false;
+    }
+    return true;
 }
 
 // Returns public key certificate.
 optional<vector<uint8_t>> FakeSecureHardwareProvisioningProxy::createCredentialKey(
         const vector<uint8_t>& challenge, const vector<uint8_t>& applicationId) {
+    if (!validateId(__func__)) {
+        return std::nullopt;
+    }
+
     uint8_t publicKeyCert[4096];
     size_t publicKeyCertSize = sizeof publicKeyCert;
     if (!eicProvisioningCreateCredentialKey(&ctx_, challenge.data(), challenge.size(),
                                             applicationId.data(), applicationId.size(),
                                             publicKeyCert, &publicKeyCertSize)) {
-        return {};
+        return std::nullopt;
     }
     vector<uint8_t> pubKeyCert(publicKeyCertSize);
     memcpy(pubKeyCert.data(), publicKeyCert, publicKeyCertSize);
@@ -91,8 +164,11 @@
 }
 
 bool FakeSecureHardwareProvisioningProxy::startPersonalization(
-        int accessControlProfileCount, vector<int> entryCounts, const string& docType,
+        int accessControlProfileCount, const vector<int>& entryCounts, const string& docType,
         size_t expectedProofOfProvisioningSize) {
+    if (!validateId(__func__)) {
+        return false;
+    }
 
     if (!eicProvisioningStartPersonalization(&ctx_, accessControlProfileCount,
                                              entryCounts.data(),
@@ -108,13 +184,17 @@
 optional<vector<uint8_t>> FakeSecureHardwareProvisioningProxy::addAccessControlProfile(
         int id, const vector<uint8_t>& readerCertificate, bool userAuthenticationRequired,
         uint64_t timeoutMillis, uint64_t secureUserId) {
+    if (!validateId(__func__)) {
+        return std::nullopt;
+    }
+
     vector<uint8_t> mac(28);
     uint8_t scratchSpace[512];
     if (!eicProvisioningAddAccessControlProfile(
                 &ctx_, id, readerCertificate.data(), readerCertificate.size(),
                 userAuthenticationRequired, timeoutMillis, secureUserId, mac.data(),
                 scratchSpace, sizeof(scratchSpace))) {
-        return {};
+        return std::nullopt;
     }
     return mac;
 }
@@ -122,6 +202,10 @@
 bool FakeSecureHardwareProvisioningProxy::beginAddEntry(const vector<int>& accessControlProfileIds,
                                                         const string& nameSpace, const string& name,
                                                         uint64_t entrySize) {
+    if (!validateId(__func__)) {
+        return false;
+    }
+
     uint8_t scratchSpace[512];
     vector<uint8_t> uint8AccessControlProfileIds;
     for (size_t i = 0; i < accessControlProfileIds.size(); i++) {
@@ -138,6 +222,10 @@
 optional<vector<uint8_t>> FakeSecureHardwareProvisioningProxy::addEntryValue(
         const vector<int>& accessControlProfileIds, const string& nameSpace, const string& name,
         const vector<uint8_t>& content) {
+    if (!validateId(__func__)) {
+        return std::nullopt;
+    }
+
     vector<uint8_t> eicEncryptedContent;
     uint8_t scratchSpace[512];
     vector<uint8_t> uint8AccessControlProfileIds;
@@ -150,16 +238,20 @@
                 &ctx_, uint8AccessControlProfileIds.data(), uint8AccessControlProfileIds.size(),
                 nameSpace.c_str(), nameSpace.size(), name.c_str(), name.size(), content.data(),
                 content.size(), eicEncryptedContent.data(), scratchSpace, sizeof(scratchSpace))) {
-        return {};
+        return std::nullopt;
     }
     return eicEncryptedContent;
 }
 
 // Returns signatureOfToBeSigned (EIC_ECDSA_P256_SIGNATURE_SIZE bytes).
 optional<vector<uint8_t>> FakeSecureHardwareProvisioningProxy::finishAddingEntries() {
+    if (!validateId(__func__)) {
+        return std::nullopt;
+    }
+
     vector<uint8_t> signatureOfToBeSigned(EIC_ECDSA_P256_SIGNATURE_SIZE);
     if (!eicProvisioningFinishAddingEntries(&ctx_, signatureOfToBeSigned.data())) {
-        return {};
+        return std::nullopt;
     }
     return signatureOfToBeSigned;
 }
@@ -167,11 +259,15 @@
 // Returns encryptedCredentialKeys.
 optional<vector<uint8_t>> FakeSecureHardwareProvisioningProxy::finishGetCredentialData(
         const string& docType) {
+    if (!validateId(__func__)) {
+        return std::nullopt;
+    }
+
     vector<uint8_t> encryptedCredentialKeys(116);
     size_t size = encryptedCredentialKeys.size();
     if (!eicProvisioningFinishGetCredentialData(&ctx_, docType.c_str(), docType.size(),
                                                 encryptedCredentialKeys.data(), &size)) {
-        return {};
+        return std::nullopt;
     }
     encryptedCredentialKeys.resize(size);
     return encryptedCredentialKeys;
@@ -179,21 +275,200 @@
 
 // ----------------------------------------------------------------------
 
-FakeSecureHardwarePresentationProxy::FakeSecureHardwarePresentationProxy() {}
+// The singleton EicSession object used everywhere.
+//
+EicSession FakeSecureHardwareSessionProxy::ctx_;
 
-FakeSecureHardwarePresentationProxy::~FakeSecureHardwarePresentationProxy() {}
+FakeSecureHardwareSessionProxy::~FakeSecureHardwareSessionProxy() {
+    if (id_ != 0) {
+        shutdown();
+    }
+}
 
-bool FakeSecureHardwarePresentationProxy::initialize(bool testCredential, string docType,
-                                                     vector<uint8_t> encryptedCredentialKeys) {
-    LOG(INFO) << "FakeSecureHardwarePresentationProxy created, sizeof(EicPresentation): "
-              << sizeof(EicPresentation);
-    return eicPresentationInit(&ctx_, testCredential, docType.c_str(), docType.size(),
-                               encryptedCredentialKeys.data(), encryptedCredentialKeys.size());
+bool FakeSecureHardwareSessionProxy::initialize() {
+    if (id_ != 0) {
+        LOG(WARNING) << "Proxy is already initialized";
+        return false;
+    }
+    bool initialized = eicSessionInit(&ctx_);
+    if (!initialized) {
+        return false;
+    }
+    optional<uint32_t> id = getId();
+    if (!id) {
+        LOG(WARNING) << "Error getting id";
+        return false;
+    }
+    id_ = id.value();
+    return true;
+}
+
+optional<uint32_t> FakeSecureHardwareSessionProxy::getId() {
+    uint32_t id;
+    if (!eicSessionGetId(&ctx_, &id)) {
+        return std::nullopt;
+    }
+    return id;
+}
+
+bool FakeSecureHardwareSessionProxy::shutdown() {
+    bool validated = validateId(__func__);
+    id_ = 0;
+    if (!validated) {
+        return false;
+    }
+    if (!eicSessionShutdown(&ctx_)) {
+        LOG(INFO) << "Error shutting down session";
+        return false;
+    }
+    return true;
+}
+
+bool FakeSecureHardwareSessionProxy::validateId(const string& callerName) {
+    if (id_ == 0) {
+        LOG(WARNING) << "FakeSecureHardwareSessionProxy::" << callerName
+                     << ": While validating expected id is 0";
+        return false;
+    }
+    optional<uint32_t> id = getId();
+    if (!id) {
+        LOG(WARNING) << "FakeSecureHardwareSessionProxy::" << callerName
+                     << ": Error getting id for validating";
+        return false;
+    }
+    if (id.value() != id_) {
+        LOG(WARNING) << "FakeSecureHardwareSessionProxy::" << callerName
+                     << ": While validating expected id " << id_ << " but got " << id.value();
+        return false;
+    }
+    return true;
+}
+
+optional<uint64_t> FakeSecureHardwareSessionProxy::getAuthChallenge() {
+    if (!validateId(__func__)) {
+        return std::nullopt;
+    }
+
+    uint64_t authChallenge;
+    if (!eicSessionGetAuthChallenge(&ctx_, &authChallenge)) {
+        return std::nullopt;
+    }
+    return authChallenge;
+}
+
+optional<vector<uint8_t>> FakeSecureHardwareSessionProxy::getEphemeralKeyPair() {
+    if (!validateId(__func__)) {
+        return std::nullopt;
+    }
+
+    vector<uint8_t> priv(EIC_P256_PRIV_KEY_SIZE);
+    if (!eicSessionGetEphemeralKeyPair(&ctx_, priv.data())) {
+        return std::nullopt;
+    }
+    return priv;
+}
+
+bool FakeSecureHardwareSessionProxy::setReaderEphemeralPublicKey(
+        const vector<uint8_t>& readerEphemeralPublicKey) {
+    if (!validateId(__func__)) {
+        return false;
+    }
+
+    return eicSessionSetReaderEphemeralPublicKey(&ctx_, readerEphemeralPublicKey.data());
+}
+
+bool FakeSecureHardwareSessionProxy::setSessionTranscript(
+        const vector<uint8_t>& sessionTranscript) {
+    if (!validateId(__func__)) {
+        return false;
+    }
+
+    return eicSessionSetSessionTranscript(&ctx_, sessionTranscript.data(),
+                                          sessionTranscript.size());
+}
+
+// ----------------------------------------------------------------------
+
+// The singleton EicPresentation object used everywhere.
+//
+EicPresentation FakeSecureHardwarePresentationProxy::ctx_;
+
+FakeSecureHardwarePresentationProxy::~FakeSecureHardwarePresentationProxy() {
+    if (id_ != 0) {
+        shutdown();
+    }
+}
+
+bool FakeSecureHardwarePresentationProxy::initialize(
+        uint32_t sessionId, bool testCredential, const string& docType,
+        const vector<uint8_t>& encryptedCredentialKeys) {
+    if (id_ != 0) {
+        LOG(WARNING) << "Proxy is already initialized";
+        return false;
+    }
+    bool initialized =
+            eicPresentationInit(&ctx_, sessionId, testCredential, docType.c_str(), docType.size(),
+                                encryptedCredentialKeys.data(), encryptedCredentialKeys.size());
+    if (!initialized) {
+        return false;
+    }
+    optional<uint32_t> id = getId();
+    if (!id) {
+        LOG(WARNING) << "Error getting id";
+        return false;
+    }
+    id_ = id.value();
+    return true;
+}
+
+optional<uint32_t> FakeSecureHardwarePresentationProxy::getId() {
+    uint32_t id;
+    if (!eicPresentationGetId(&ctx_, &id)) {
+        return std::nullopt;
+    }
+    return id;
+}
+
+bool FakeSecureHardwarePresentationProxy::validateId(const string& callerName) {
+    if (id_ == 0) {
+        LOG(WARNING) << "FakeSecureHardwarePresentationProxy::" << callerName
+                     << ": While validating expected id is 0";
+        return false;
+    }
+    optional<uint32_t> id = getId();
+    if (!id) {
+        LOG(WARNING) << "FakeSecureHardwarePresentationProxy::" << callerName
+                     << ": Error getting id for validating";
+        return false;
+    }
+    if (id.value() != id_) {
+        LOG(WARNING) << "FakeSecureHardwarePresentationProxy::" << callerName
+                     << ": While validating expected id " << id_ << " but got " << id.value();
+        return false;
+    }
+    return true;
+}
+
+bool FakeSecureHardwarePresentationProxy::shutdown() {
+    bool validated = validateId(__func__);
+    id_ = 0;
+    if (!validated) {
+        return false;
+    }
+    if (!eicPresentationShutdown(&ctx_)) {
+        LOG(INFO) << "Error shutting down presentation";
+        return false;
+    }
+    return true;
 }
 
 // Returns publicKeyCert (1st component) and signingKeyBlob (2nd component)
 optional<pair<vector<uint8_t>, vector<uint8_t>>>
-FakeSecureHardwarePresentationProxy::generateSigningKeyPair(string docType, time_t now) {
+FakeSecureHardwarePresentationProxy::generateSigningKeyPair(const string& docType, time_t now) {
+    if (!validateId(__func__)) {
+        return std::nullopt;
+    }
+
     uint8_t publicKeyCert[512];
     size_t publicKeyCertSize = sizeof(publicKeyCert);
     vector<uint8_t> signingKeyBlob(60);
@@ -201,7 +476,7 @@
     if (!eicPresentationGenerateSigningKeyPair(&ctx_, docType.c_str(), docType.size(), now,
                                                publicKeyCert, &publicKeyCertSize,
                                                signingKeyBlob.data())) {
-        return {};
+        return std::nullopt;
     }
 
     vector<uint8_t> cert;
@@ -213,33 +488,44 @@
 
 // Returns private key
 optional<vector<uint8_t>> FakeSecureHardwarePresentationProxy::createEphemeralKeyPair() {
+    if (!validateId(__func__)) {
+        return std::nullopt;
+    }
+
     vector<uint8_t> priv(EIC_P256_PRIV_KEY_SIZE);
     if (!eicPresentationCreateEphemeralKeyPair(&ctx_, priv.data())) {
-        return {};
+        return std::nullopt;
     }
     return priv;
 }
 
 optional<uint64_t> FakeSecureHardwarePresentationProxy::createAuthChallenge() {
+    if (!validateId(__func__)) {
+        return std::nullopt;
+    }
+
     uint64_t challenge;
     if (!eicPresentationCreateAuthChallenge(&ctx_, &challenge)) {
-        return {};
+        return std::nullopt;
     }
     return challenge;
 }
 
-bool FakeSecureHardwarePresentationProxy::shutdown() {
-    LOG(INFO) << "FakeSecureHardwarePresentationProxy shutdown";
-    return true;
-}
-
 bool FakeSecureHardwarePresentationProxy::pushReaderCert(const vector<uint8_t>& certX509) {
+    if (!validateId(__func__)) {
+        return false;
+    }
+
     return eicPresentationPushReaderCert(&ctx_, certX509.data(), certX509.size());
 }
 
 bool FakeSecureHardwarePresentationProxy::validateRequestMessage(
         const vector<uint8_t>& sessionTranscript, const vector<uint8_t>& requestMessage,
         int coseSignAlg, const vector<uint8_t>& readerSignatureOfToBeSigned) {
+    if (!validateId(__func__)) {
+        return false;
+    }
+
     return eicPresentationValidateRequestMessage(
             &ctx_, sessionTranscript.data(), sessionTranscript.size(), requestMessage.data(),
             requestMessage.size(), coseSignAlg, readerSignatureOfToBeSigned.data(),
@@ -251,6 +537,10 @@
         int hardwareAuthenticatorType, uint64_t timeStamp, const vector<uint8_t>& mac,
         uint64_t verificationTokenChallenge, uint64_t verificationTokenTimestamp,
         int verificationTokenSecurityLevel, const vector<uint8_t>& verificationTokenMac) {
+    if (!validateId(__func__)) {
+        return false;
+    }
+
     return eicPresentationSetAuthToken(&ctx_, challenge, secureUserId, authenticatorId,
                                        hardwareAuthenticatorType, timeStamp, mac.data(), mac.size(),
                                        verificationTokenChallenge, verificationTokenTimestamp,
@@ -261,6 +551,10 @@
 optional<bool> FakeSecureHardwarePresentationProxy::validateAccessControlProfile(
         int id, const vector<uint8_t>& readerCertificate, bool userAuthenticationRequired,
         int timeoutMillis, uint64_t secureUserId, const vector<uint8_t>& mac) {
+    if (!validateId(__func__)) {
+        return std::nullopt;
+    }
+
     bool accessGranted = false;
     uint8_t scratchSpace[512];
     if (!eicPresentationValidateAccessControlProfile(&ctx_, id, readerCertificate.data(),
@@ -268,12 +562,16 @@
                                                      userAuthenticationRequired, timeoutMillis,
                                                      secureUserId, mac.data(), &accessGranted,
                                                      scratchSpace, sizeof(scratchSpace))) {
-        return {};
+        return std::nullopt;
     }
     return accessGranted;
 }
 
 bool FakeSecureHardwarePresentationProxy::startRetrieveEntries() {
+    if (!validateId(__func__)) {
+        return false;
+    }
+
     return eicPresentationStartRetrieveEntries(&ctx_);
 }
 
@@ -281,6 +579,10 @@
         const vector<uint8_t>& sessionTranscript, const vector<uint8_t>& readerEphemeralPublicKey,
         const vector<uint8_t>& signingKeyBlob, const string& docType,
         unsigned int numNamespacesWithValues, size_t expectedProofOfProvisioningSize) {
+    if (!validateId(__func__)) {
+        return false;
+    }
+
     if (signingKeyBlob.size() != 60) {
         eicDebug("Unexpected size %zd of signingKeyBlob, expected 60", signingKeyBlob.size());
         return false;
@@ -294,6 +596,10 @@
 AccessCheckResult FakeSecureHardwarePresentationProxy::startRetrieveEntryValue(
         const string& nameSpace, const string& name, unsigned int newNamespaceNumEntries,
         int32_t entrySize, const vector<int32_t>& accessControlProfileIds) {
+    if (!validateId(__func__)) {
+        return AccessCheckResult::kFailed;
+    }
+
     uint8_t scratchSpace[512];
     vector<uint8_t> uint8AccessControlProfileIds;
     for (size_t i = 0; i < accessControlProfileIds.size(); i++) {
@@ -324,6 +630,10 @@
 optional<vector<uint8_t>> FakeSecureHardwarePresentationProxy::retrieveEntryValue(
         const vector<uint8_t>& encryptedContent, const string& nameSpace, const string& name,
         const vector<int32_t>& accessControlProfileIds) {
+    if (!validateId(__func__)) {
+        return std::nullopt;
+    }
+
     uint8_t scratchSpace[512];
     vector<uint8_t> uint8AccessControlProfileIds;
     for (size_t i = 0; i < accessControlProfileIds.size(); i++) {
@@ -337,16 +647,20 @@
                 nameSpace.c_str(), nameSpace.size(), name.c_str(), name.size(),
                 uint8AccessControlProfileIds.data(), uint8AccessControlProfileIds.size(),
                 scratchSpace, sizeof(scratchSpace))) {
-        return {};
+        return std::nullopt;
     }
     return content;
 }
 
 optional<vector<uint8_t>> FakeSecureHardwarePresentationProxy::finishRetrieval() {
+    if (!validateId(__func__)) {
+        return std::nullopt;
+    }
+
     vector<uint8_t> mac(32);
     size_t macSize = 32;
     if (!eicPresentationFinishRetrieval(&ctx_, mac.data(), &macSize)) {
-        return {};
+        return std::nullopt;
     }
     mac.resize(macSize);
     return mac;
@@ -355,11 +669,15 @@
 optional<vector<uint8_t>> FakeSecureHardwarePresentationProxy::deleteCredential(
         const string& docType, const vector<uint8_t>& challenge, bool includeChallenge,
         size_t proofOfDeletionCborSize) {
+    if (!validateId(__func__)) {
+        return std::nullopt;
+    }
+
     vector<uint8_t> signatureOfToBeSigned(EIC_ECDSA_P256_SIGNATURE_SIZE);
     if (!eicPresentationDeleteCredential(&ctx_, docType.c_str(), docType.size(), challenge.data(),
                                          challenge.size(), includeChallenge,
                                          proofOfDeletionCborSize, signatureOfToBeSigned.data())) {
-        return {};
+        return std::nullopt;
     }
     return signatureOfToBeSigned;
 }
@@ -367,11 +685,15 @@
 optional<vector<uint8_t>> FakeSecureHardwarePresentationProxy::proveOwnership(
         const string& docType, bool testCredential, const vector<uint8_t>& challenge,
         size_t proofOfOwnershipCborSize) {
+    if (!validateId(__func__)) {
+        return std::nullopt;
+    }
+
     vector<uint8_t> signatureOfToBeSigned(EIC_ECDSA_P256_SIGNATURE_SIZE);
     if (!eicPresentationProveOwnership(&ctx_, docType.c_str(), docType.size(), testCredential,
                                        challenge.data(), challenge.size(), proofOfOwnershipCborSize,
                                        signatureOfToBeSigned.data())) {
-        return {};
+        return std::nullopt;
     }
     return signatureOfToBeSigned;
 }
diff --git a/identity/aidl/default/FakeSecureHardwareProxy.h b/identity/aidl/default/FakeSecureHardwareProxy.h
index 6852c1a..df98c7a 100644
--- a/identity/aidl/default/FakeSecureHardwareProxy.h
+++ b/identity/aidl/default/FakeSecureHardwareProxy.h
@@ -27,21 +27,23 @@
 //
 class FakeSecureHardwareProvisioningProxy : public SecureHardwareProvisioningProxy {
   public:
-    FakeSecureHardwareProvisioningProxy();
+    FakeSecureHardwareProvisioningProxy() = default;
     virtual ~FakeSecureHardwareProvisioningProxy();
 
     bool initialize(bool testCredential) override;
 
-    bool initializeForUpdate(bool testCredential, string docType,
-                             vector<uint8_t> encryptedCredentialKeys) override;
+    bool initializeForUpdate(bool testCredential, const string& docType,
+                             const vector<uint8_t>& encryptedCredentialKeys) override;
 
     bool shutdown() override;
 
+    optional<uint32_t> getId() override;
+
     // Returns public key certificate.
     optional<vector<uint8_t>> createCredentialKey(const vector<uint8_t>& challenge,
                                                   const vector<uint8_t>& applicationId) override;
 
-    bool startPersonalization(int accessControlProfileCount, vector<int> entryCounts,
+    bool startPersonalization(int accessControlProfileCount, const vector<int>& entryCounts,
                               const string& docType,
                               size_t expectedProofOfProvisioningSize) override;
 
@@ -67,21 +69,81 @@
     optional<vector<uint8_t>> finishGetCredentialData(const string& docType) override;
 
   protected:
-    EicProvisioning ctx_;
+    // See docs for id_.
+    //
+    bool validateId(const string& callerName);
+
+    // We use a singleton libeic object, shared by all proxy instances.  This is to
+    // properly simulate a situation where libeic is used on constrained hardware
+    // with only enough RAM for a single instance of the libeic object.
+    //
+    static EicProvisioning ctx_;
+
+    // On the HAL side we keep track of the ID that was assigned to the libeic object
+    // created in secure hardware. For every call into libeic we validate that this
+    // identifier matches what is on the secure side. This is what the validateId()
+    // method does.
+    //
+    uint32_t id_ = 0;
+};
+
+// This implementation uses libEmbeddedIC in-process.
+//
+class FakeSecureHardwareSessionProxy : public SecureHardwareSessionProxy {
+  public:
+    FakeSecureHardwareSessionProxy() = default;
+    virtual ~FakeSecureHardwareSessionProxy();
+
+    bool initialize() override;
+
+    bool shutdown() override;
+
+    optional<uint32_t> getId() override;
+
+    optional<uint64_t> getAuthChallenge() override;
+
+    // Returns private key
+    optional<vector<uint8_t>> getEphemeralKeyPair() override;
+
+    bool setReaderEphemeralPublicKey(const vector<uint8_t>& readerEphemeralPublicKey) override;
+
+    bool setSessionTranscript(const vector<uint8_t>& sessionTranscript) override;
+
+  protected:
+    // See docs for id_.
+    //
+    bool validateId(const string& callerName);
+
+    // We use a singleton libeic object, shared by all proxy instances.  This is to
+    // properly simulate a situation where libeic is used on constrained hardware
+    // with only enough RAM for a single instance of the libeic object.
+    //
+    static EicSession ctx_;
+
+    // On the HAL side we keep track of the ID that was assigned to the libeic object
+    // created in secure hardware. For every call into libeic we validate that this
+    // identifier matches what is on the secure side. This is what the validateId()
+    // method does.
+    //
+    uint32_t id_ = 0;
 };
 
 // This implementation uses libEmbeddedIC in-process.
 //
 class FakeSecureHardwarePresentationProxy : public SecureHardwarePresentationProxy {
   public:
-    FakeSecureHardwarePresentationProxy();
+    FakeSecureHardwarePresentationProxy() = default;
     virtual ~FakeSecureHardwarePresentationProxy();
 
-    bool initialize(bool testCredential, string docType,
-                    vector<uint8_t> encryptedCredentialKeys) override;
+    bool initialize(uint32_t sessionId, bool testCredential, const string& docType,
+                    const vector<uint8_t>& encryptedCredentialKeys) override;
+
+    bool shutdown() override;
+
+    optional<uint32_t> getId() override;
 
     // Returns publicKeyCert (1st component) and signingKeyBlob (2nd component)
-    optional<pair<vector<uint8_t>, vector<uint8_t>>> generateSigningKeyPair(string docType,
+    optional<pair<vector<uint8_t>, vector<uint8_t>>> generateSigningKeyPair(const string& docType,
                                                                             time_t now) override;
 
     // Returns private key
@@ -133,10 +195,23 @@
                                              const vector<uint8_t>& challenge,
                                              size_t proofOfOwnershipCborSize) override;
 
-    bool shutdown() override;
-
   protected:
-    EicPresentation ctx_;
+    // See docs for id_.
+    //
+    bool validateId(const string& callerName);
+
+    // We use a singleton libeic object, shared by all proxy instances.  This is to
+    // properly simulate a situation where libeic is used on constrained hardware
+    // with only enough RAM for a single instance of the libeic object.
+    //
+    static EicPresentation ctx_;
+
+    // On the HAL side we keep track of the ID that was assigned to the libeic object
+    // created in secure hardware. For every call into libeic we validate that this
+    // identifier matches what is on the secure side. This is what the validateId()
+    // method does.
+    //
+    uint32_t id_ = 0;
 };
 
 // Factory implementation.
@@ -150,6 +225,10 @@
         return new FakeSecureHardwareProvisioningProxy();
     }
 
+    sp<SecureHardwareSessionProxy> createSessionProxy() override {
+        return new FakeSecureHardwareSessionProxy();
+    }
+
     sp<SecureHardwarePresentationProxy> createPresentationProxy() override {
         return new FakeSecureHardwarePresentationProxy();
     }
diff --git a/identity/aidl/default/android.hardware.identity_credential.xml b/identity/aidl/default/android.hardware.identity_credential.xml
index 5149792..20b2710 100644
--- a/identity/aidl/default/android.hardware.identity_credential.xml
+++ b/identity/aidl/default/android.hardware.identity_credential.xml
@@ -14,5 +14,5 @@
      limitations under the License.
 -->
 <permissions>
-  <feature name="android.hardware.identity_credential" version="202101" />
+  <feature name="android.hardware.identity_credential" version="202201" />
 </permissions>
diff --git a/identity/aidl/default/common/IdentityCredential.cpp b/identity/aidl/default/common/IdentityCredential.cpp
index 95557b5..7678ecb 100644
--- a/identity/aidl/default/common/IdentityCredential.cpp
+++ b/identity/aidl/default/common/IdentityCredential.cpp
@@ -72,14 +72,38 @@
     testCredential_ = testCredentialItem->value();
 
     encryptedCredentialKeys_ = encryptedCredentialKeysItem->value();
-    if (!hwProxy_->initialize(testCredential_, docType_, encryptedCredentialKeys_)) {
-        LOG(ERROR) << "hwProxy->initialize failed";
-        return false;
+
+    // If in a session, delay the initialization of the proxy.
+    //
+    if (!session_) {
+        ndk::ScopedAStatus status = ensureHwProxy();
+        if (!status.isOk()) {
+            LOG(ERROR) << "Error initializing hw proxy";
+            return IIdentityCredentialStore::STATUS_FAILED;
+        }
     }
 
     return IIdentityCredentialStore::STATUS_OK;
 }
 
+ndk::ScopedAStatus IdentityCredential::ensureHwProxy() {
+    if (hwProxy_) {
+        return ndk::ScopedAStatus::ok();
+    }
+    hwProxy_ = hwProxyFactory_->createPresentationProxy();
+    if (!hwProxy_) {
+        return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
+                IIdentityCredentialStore::STATUS_FAILED, "Error creating hw proxy"));
+    }
+    uint64_t sessionId = session_ ? session_->getSessionId() : EIC_PRESENTATION_ID_UNSET;
+    if (!hwProxy_->initialize(sessionId, testCredential_, docType_, encryptedCredentialKeys_)) {
+        hwProxy_.clear();
+        return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
+                IIdentityCredentialStore::STATUS_FAILED, "Error initializing hw proxy"));
+    }
+    return ndk::ScopedAStatus::ok();
+}
+
 ndk::ScopedAStatus IdentityCredential::deleteCredential(
         vector<uint8_t>* outProofOfDeletionSignature) {
     return deleteCredentialCommon({}, false, outProofOfDeletionSignature);
@@ -93,6 +117,14 @@
 ndk::ScopedAStatus IdentityCredential::deleteCredentialCommon(
         const vector<uint8_t>& challenge, bool includeChallenge,
         vector<uint8_t>* outProofOfDeletionSignature) {
+    if (session_) {
+        return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
+                IIdentityCredentialStore::STATUS_FAILED, "Cannot be called in a session"));
+    }
+    ndk::ScopedAStatus status = ensureHwProxy();
+    if (!status.isOk()) {
+        return status;
+    }
     if (challenge.size() > 32) {
         return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
                 IIdentityCredentialStore::STATUS_INVALID_DATA, "Challenge too big"));
@@ -128,6 +160,14 @@
 
 ndk::ScopedAStatus IdentityCredential::proveOwnership(
         const vector<uint8_t>& challenge, vector<uint8_t>* outProofOfOwnershipSignature) {
+    if (session_) {
+        return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
+                IIdentityCredentialStore::STATUS_FAILED, "Cannot be called in a session"));
+    }
+    ndk::ScopedAStatus status = ensureHwProxy();
+    if (!status.isOk()) {
+        return status;
+    }
     if (challenge.size() > 32) {
         return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
                 IIdentityCredentialStore::STATUS_INVALID_DATA, "Challenge too big"));
@@ -159,6 +199,14 @@
 }
 
 ndk::ScopedAStatus IdentityCredential::createEphemeralKeyPair(vector<uint8_t>* outKeyPair) {
+    if (session_) {
+        return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
+                IIdentityCredentialStore::STATUS_FAILED, "Cannot be called in a session"));
+    }
+    ndk::ScopedAStatus status = ensureHwProxy();
+    if (!status.isOk()) {
+        return status;
+    }
     optional<vector<uint8_t>> ephemeralPriv = hwProxy_->createEphemeralKeyPair();
     if (!ephemeralPriv) {
         return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
@@ -186,11 +234,23 @@
 
 ndk::ScopedAStatus IdentityCredential::setReaderEphemeralPublicKey(
         const vector<uint8_t>& publicKey) {
+    if (session_) {
+        return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
+                IIdentityCredentialStore::STATUS_FAILED, "Cannot be called in a session"));
+    }
     readerPublicKey_ = publicKey;
     return ndk::ScopedAStatus::ok();
 }
 
 ndk::ScopedAStatus IdentityCredential::createAuthChallenge(int64_t* outChallenge) {
+    if (session_) {
+        return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
+                IIdentityCredentialStore::STATUS_FAILED, "Cannot be called in a session"));
+    }
+    ndk::ScopedAStatus status = ensureHwProxy();
+    if (!status.isOk()) {
+        return status;
+    }
     optional<uint64_t> challenge = hwProxy_->createAuthChallenge();
     if (!challenge) {
         return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
@@ -217,16 +277,22 @@
         const HardwareAuthToken& authToken, const vector<uint8_t>& itemsRequest,
         const vector<uint8_t>& signingKeyBlob, const vector<uint8_t>& sessionTranscript,
         const vector<uint8_t>& readerSignature, const vector<int32_t>& requestCounts) {
-    std::unique_ptr<cppbor::Item> sessionTranscriptItem;
-    if (sessionTranscript.size() > 0) {
-        auto [item, _, message] = cppbor::parse(sessionTranscript);
-        if (item == nullptr) {
-            return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
-                    IIdentityCredentialStore::STATUS_INVALID_DATA,
-                    "SessionTranscript contains invalid CBOR"));
-        }
-        sessionTranscriptItem = std::move(item);
+    ndk::ScopedAStatus status = ensureHwProxy();
+    if (!status.isOk()) {
+        return status;
     }
+
+    // If in a session, ensure the passed-in session transcript matches the
+    // session transcript from the session.
+    if (session_) {
+        if (sessionTranscript != session_->getSessionTranscript()) {
+            return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
+                    IIdentityCredentialStore::STATUS_SESSION_TRANSCRIPT_MISMATCH,
+                    "In a session and passed-in SessionTranscript doesn't match the one "
+                    "from the session"));
+        }
+    }
+
     if (numStartRetrievalCalls_ > 0) {
         if (sessionTranscript_ != sessionTranscript) {
             LOG(ERROR) << "Session Transcript changed";
@@ -390,32 +456,36 @@
         }
     }
 
-    // TODO: move this check to the TA
-#if 1
-    // To prevent replay-attacks, we check that the public part of the ephemeral
-    // key we previously created, is present in the DeviceEngagement part of
-    // SessionTranscript as a COSE_Key, in uncompressed form.
-    //
-    // We do this by just searching for the X and Y coordinates.
-    if (sessionTranscript.size() > 0) {
-        auto [getXYSuccess, ePubX, ePubY] = support::ecPublicKeyGetXandY(ephemeralPublicKey_);
-        if (!getXYSuccess) {
-            return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
-                    IIdentityCredentialStore::STATUS_EPHEMERAL_PUBLIC_KEY_NOT_FOUND,
-                    "Error extracting X and Y from ePub"));
-        }
-        if (sessionTranscript.size() > 0 &&
-            !(memmem(sessionTranscript.data(), sessionTranscript.size(), ePubX.data(),
-                     ePubX.size()) != nullptr &&
-              memmem(sessionTranscript.data(), sessionTranscript.size(), ePubY.data(),
-                     ePubY.size()) != nullptr)) {
-            return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
-                    IIdentityCredentialStore::STATUS_EPHEMERAL_PUBLIC_KEY_NOT_FOUND,
-                    "Did not find ephemeral public key's X and Y coordinates in "
-                    "SessionTranscript (make sure leading zeroes are not used)"));
+    if (session_) {
+        // If presenting in a session, the TA has already done this check.
+
+    } else {
+        // To prevent replay-attacks, we check that the public part of the ephemeral
+        // key we previously created, is present in the DeviceEngagement part of
+        // SessionTranscript as a COSE_Key, in uncompressed form.
+        //
+        // We do this by just searching for the X and Y coordinates.
+        //
+        // Would be nice to move this check to the TA.
+        if (sessionTranscript.size() > 0) {
+            auto [getXYSuccess, ePubX, ePubY] = support::ecPublicKeyGetXandY(ephemeralPublicKey_);
+            if (!getXYSuccess) {
+                return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
+                        IIdentityCredentialStore::STATUS_EPHEMERAL_PUBLIC_KEY_NOT_FOUND,
+                        "Error extracting X and Y from ePub"));
+            }
+            if (sessionTranscript.size() > 0 &&
+                !(memmem(sessionTranscript.data(), sessionTranscript.size(), ePubX.data(),
+                         ePubX.size()) != nullptr &&
+                  memmem(sessionTranscript.data(), sessionTranscript.size(), ePubY.data(),
+                         ePubY.size()) != nullptr)) {
+                return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
+                        IIdentityCredentialStore::STATUS_EPHEMERAL_PUBLIC_KEY_NOT_FOUND,
+                        "Did not find ephemeral public key's X and Y coordinates in "
+                        "SessionTranscript (make sure leading zeroes are not used)"));
+            }
         }
     }
-#endif
 
     // itemsRequest: If non-empty, contains request data that may be signed by the
     // reader.  The content can be defined in the way appropriate for the
@@ -537,21 +607,38 @@
 
     // Finally, pass info so the HMAC key can be derived and the TA can start
     // creating the DeviceNameSpaces CBOR...
-    if (sessionTranscript_.size() > 0 && readerPublicKey_.size() > 0 && signingKeyBlob.size() > 0) {
-        // We expect the reader ephemeral public key to be same size and curve
-        // as the ephemeral key we generated (e.g. P-256 key), otherwise ECDH
-        // won't work. So its length should be 65 bytes and it should be
-        // starting with 0x04.
-        if (readerPublicKey_.size() != 65 || readerPublicKey_[0] != 0x04) {
-            return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
-                    IIdentityCredentialStore::STATUS_FAILED,
-                    "Reader public key is not in expected format"));
+    if (!session_) {
+        if (sessionTranscript_.size() > 0 && readerPublicKey_.size() > 0 &&
+            signingKeyBlob.size() > 0) {
+            // We expect the reader ephemeral public key to be same size and curve
+            // as the ephemeral key we generated (e.g. P-256 key), otherwise ECDH
+            // won't work. So its length should be 65 bytes and it should be
+            // starting with 0x04.
+            if (readerPublicKey_.size() != 65 || readerPublicKey_[0] != 0x04) {
+                return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
+                        IIdentityCredentialStore::STATUS_FAILED,
+                        "Reader public key is not in expected format"));
+            }
+            vector<uint8_t> pubKeyP256(readerPublicKey_.begin() + 1, readerPublicKey_.end());
+            if (!hwProxy_->calcMacKey(sessionTranscript_, pubKeyP256, signingKeyBlob, docType_,
+                                      numNamespacesWithValues, expectedDeviceNameSpacesSize_)) {
+                return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
+                        IIdentityCredentialStore::STATUS_FAILED,
+                        "Error starting retrieving entries"));
+            }
         }
-        vector<uint8_t> pubKeyP256(readerPublicKey_.begin() + 1, readerPublicKey_.end());
-        if (!hwProxy_->calcMacKey(sessionTranscript_, pubKeyP256, signingKeyBlob, docType_,
-                                  numNamespacesWithValues, expectedDeviceNameSpacesSize_)) {
-            return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
-                    IIdentityCredentialStore::STATUS_FAILED, "Error starting retrieving entries"));
+    } else {
+        if (session_->getSessionTranscript().size() > 0 &&
+            session_->getReaderEphemeralPublicKey().size() > 0 && signingKeyBlob.size() > 0) {
+            // Don't actually pass the reader ephemeral public key in, the TA will get
+            // it from the session object.
+            //
+            if (!hwProxy_->calcMacKey(sessionTranscript_, {}, signingKeyBlob, docType_,
+                                      numNamespacesWithValues, expectedDeviceNameSpacesSize_)) {
+                return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
+                        IIdentityCredentialStore::STATUS_FAILED,
+                        "Error starting retrieving entries"));
+            }
         }
     }
 
@@ -665,6 +752,11 @@
 ndk::ScopedAStatus IdentityCredential::startRetrieveEntryValue(
         const string& nameSpace, const string& name, int32_t entrySize,
         const vector<int32_t>& accessControlProfileIds) {
+    ndk::ScopedAStatus status = ensureHwProxy();
+    if (!status.isOk()) {
+        return status;
+    }
+
     if (name.empty()) {
         return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
                 IIdentityCredentialStore::STATUS_INVALID_DATA, "Name cannot be empty"));
@@ -785,6 +877,11 @@
 
 ndk::ScopedAStatus IdentityCredential::retrieveEntryValue(const vector<uint8_t>& encryptedContent,
                                                           vector<uint8_t>* outContent) {
+    ndk::ScopedAStatus status = ensureHwProxy();
+    if (!status.isOk()) {
+        return status;
+    }
+
     optional<vector<uint8_t>> content = hwProxy_->retrieveEntryValue(
             encryptedContent, currentNameSpace_, currentName_, currentAccessControlProfileIds_);
     if (!content) {
@@ -829,6 +926,11 @@
 
 ndk::ScopedAStatus IdentityCredential::finishRetrieval(vector<uint8_t>* outMac,
                                                        vector<uint8_t>* outDeviceNameSpaces) {
+    ndk::ScopedAStatus status = ensureHwProxy();
+    if (!status.isOk()) {
+        return status;
+    }
+
     if (currentNameSpaceDeviceNameSpacesMap_.size() > 0) {
         deviceNameSpacesMap_.add(currentNameSpace_,
                                  std::move(currentNameSpaceDeviceNameSpacesMap_));
@@ -846,18 +948,23 @@
                         .c_str()));
     }
 
-    // If there's no signing key or no sessionTranscript or no reader ephemeral
-    // public key, we return the empty MAC.
+    // If the TA calculated a MAC (it might not have), format it as a COSE_Mac0
+    //
     optional<vector<uint8_t>> mac;
-    if (signingKeyBlob_.size() > 0 && sessionTranscript_.size() > 0 &&
-        readerPublicKey_.size() > 0) {
-        optional<vector<uint8_t>> digestToBeMaced = hwProxy_->finishRetrieval();
-        if (!digestToBeMaced || digestToBeMaced.value().size() != 32) {
+    optional<vector<uint8_t>> digestToBeMaced = hwProxy_->finishRetrieval();
+
+    // The MAC not being set means an error occurred.
+    if (!digestToBeMaced) {
+        return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
+                IIdentityCredentialStore::STATUS_INVALID_DATA, "Error generating digestToBeMaced"));
+    }
+    // Size 0 means that the MAC isn't set. If it's set, it has to be 32 bytes.
+    if (digestToBeMaced.value().size() != 0) {
+        if (digestToBeMaced.value().size() != 32) {
             return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
                     IIdentityCredentialStore::STATUS_INVALID_DATA,
-                    "Error generating digestToBeMaced"));
+                    "Unexpected size for digestToBeMaced"));
         }
-        // Now construct COSE_Mac0 from the returned MAC...
         mac = support::coseMacWithDigest(digestToBeMaced.value(), {} /* data */);
     }
 
@@ -868,6 +975,15 @@
 
 ndk::ScopedAStatus IdentityCredential::generateSigningKeyPair(
         vector<uint8_t>* outSigningKeyBlob, Certificate* outSigningKeyCertificate) {
+    if (session_) {
+        return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
+                IIdentityCredentialStore::STATUS_FAILED, "Cannot be called in a session"));
+    }
+    ndk::ScopedAStatus status = ensureHwProxy();
+    if (!status.isOk()) {
+        return status;
+    }
+
     time_t now = time(NULL);
     optional<pair<vector<uint8_t>, vector<uint8_t>>> pair =
             hwProxy_->generateSigningKeyPair(docType_, now);
@@ -885,9 +1001,18 @@
 
 ndk::ScopedAStatus IdentityCredential::updateCredential(
         shared_ptr<IWritableIdentityCredential>* outWritableCredential) {
-    sp<SecureHardwareProvisioningProxy> hwProxy = hwProxyFactory_->createProvisioningProxy();
+    if (session_) {
+        return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
+                IIdentityCredentialStore::STATUS_FAILED, "Cannot be called in a session"));
+    }
+    sp<SecureHardwareProvisioningProxy> provisioningHwProxy =
+            hwProxyFactory_->createProvisioningProxy();
+    if (!provisioningHwProxy) {
+        return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
+                IIdentityCredentialStore::STATUS_FAILED, "Error creating provisioning proxy"));
+    }
     shared_ptr<WritableIdentityCredential> wc =
-            ndk::SharedRefBase::make<WritableIdentityCredential>(hwProxy, docType_,
+            ndk::SharedRefBase::make<WritableIdentityCredential>(provisioningHwProxy, docType_,
                                                                  testCredential_);
     if (!wc->initializeForUpdate(encryptedCredentialKeys_)) {
         return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
diff --git a/identity/aidl/default/common/IdentityCredential.h b/identity/aidl/default/common/IdentityCredential.h
index ef9d133..2935fb8 100644
--- a/identity/aidl/default/common/IdentityCredential.h
+++ b/identity/aidl/default/common/IdentityCredential.h
@@ -30,6 +30,7 @@
 #include <cppbor.h>
 
 #include "IdentityCredentialStore.h"
+#include "PresentationSession.h"
 #include "SecureHardwareProxy.h"
 
 namespace aidl::android::hardware::identity {
@@ -46,11 +47,11 @@
 class IdentityCredential : public BnIdentityCredential {
   public:
     IdentityCredential(sp<SecureHardwareProxyFactory> hwProxyFactory,
-                       sp<SecureHardwarePresentationProxy> hwProxy,
-                       const vector<uint8_t>& credentialData)
+                       const vector<uint8_t>& credentialData,
+                       std::shared_ptr<PresentationSession> session)
         : hwProxyFactory_(hwProxyFactory),
-          hwProxy_(hwProxy),
           credentialData_(credentialData),
+          session_(std::move(session)),
           numStartRetrievalCalls_(0),
           expectedDeviceNameSpacesSize_(0) {}
 
@@ -94,10 +95,13 @@
                                               bool includeChallenge,
                                               vector<uint8_t>* outProofOfDeletionSignature);
 
+    // Creates and initializes hwProxy_.
+    ndk::ScopedAStatus ensureHwProxy();
+
     // Set by constructor
     sp<SecureHardwareProxyFactory> hwProxyFactory_;
-    sp<SecureHardwarePresentationProxy> hwProxy_;
     vector<uint8_t> credentialData_;
+    shared_ptr<PresentationSession> session_;
     int numStartRetrievalCalls_;
 
     // Set by initialize()
@@ -105,6 +109,9 @@
     bool testCredential_;
     vector<uint8_t> encryptedCredentialKeys_;
 
+    // Set by ensureHwProxy()
+    sp<SecureHardwarePresentationProxy> hwProxy_;
+
     // Set by createEphemeralKeyPair()
     vector<uint8_t> ephemeralPublicKey_;
 
diff --git a/identity/aidl/default/common/IdentityCredentialStore.cpp b/identity/aidl/default/common/IdentityCredentialStore.cpp
index e6b5466..4703ffe 100644
--- a/identity/aidl/default/common/IdentityCredentialStore.cpp
+++ b/identity/aidl/default/common/IdentityCredentialStore.cpp
@@ -20,6 +20,7 @@
 
 #include "IdentityCredential.h"
 #include "IdentityCredentialStore.h"
+#include "PresentationSession.h"
 #include "WritableIdentityCredential.h"
 
 namespace aidl::android::hardware::identity {
@@ -61,9 +62,8 @@
                 "Unsupported cipher suite"));
     }
 
-    sp<SecureHardwarePresentationProxy> hwProxy = hwProxyFactory_->createPresentationProxy();
-    shared_ptr<IdentityCredential> credential =
-            ndk::SharedRefBase::make<IdentityCredential>(hwProxyFactory_, hwProxy, credentialData);
+    shared_ptr<IdentityCredential> credential = ndk::SharedRefBase::make<IdentityCredential>(
+            hwProxyFactory_, credentialData, nullptr /* session */);
     auto ret = credential->initialize();
     if (ret != IIdentityCredentialStore::STATUS_OK) {
         return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
@@ -73,4 +73,25 @@
     return ndk::ScopedAStatus::ok();
 }
 
+ndk::ScopedAStatus IdentityCredentialStore::createPresentationSession(
+        CipherSuite cipherSuite, shared_ptr<IPresentationSession>* outSession) {
+    // We only support CIPHERSUITE_ECDHE_HKDF_ECDSA_WITH_AES_256_GCM_SHA256 right now.
+    if (cipherSuite != CipherSuite::CIPHERSUITE_ECDHE_HKDF_ECDSA_WITH_AES_256_GCM_SHA256) {
+        return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
+                IIdentityCredentialStore::STATUS_CIPHER_SUITE_NOT_SUPPORTED,
+                "Unsupported cipher suite"));
+    }
+
+    sp<SecureHardwareSessionProxy> hwProxy = hwProxyFactory_->createSessionProxy();
+    shared_ptr<PresentationSession> session =
+            ndk::SharedRefBase::make<PresentationSession>(hwProxyFactory_, hwProxy);
+    auto ret = session->initialize();
+    if (ret != IIdentityCredentialStore::STATUS_OK) {
+        return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
+                int(ret), "Error initializing PresentationSession"));
+    }
+    *outSession = session;
+    return ndk::ScopedAStatus::ok();
+}
+
 }  // namespace aidl::android::hardware::identity
diff --git a/identity/aidl/default/common/IdentityCredentialStore.h b/identity/aidl/default/common/IdentityCredentialStore.h
index d35e632..77b894d 100644
--- a/identity/aidl/default/common/IdentityCredentialStore.h
+++ b/identity/aidl/default/common/IdentityCredentialStore.h
@@ -47,6 +47,9 @@
     ndk::ScopedAStatus getCredential(CipherSuite cipherSuite, const vector<uint8_t>& credentialData,
                                      shared_ptr<IIdentityCredential>* outCredential) override;
 
+    ndk::ScopedAStatus createPresentationSession(
+            CipherSuite cipherSuite, shared_ptr<IPresentationSession>* outSession) override;
+
   private:
     sp<SecureHardwareProxyFactory> hwProxyFactory_;
 };
diff --git a/identity/aidl/default/common/PresentationSession.cpp b/identity/aidl/default/common/PresentationSession.cpp
new file mode 100644
index 0000000..fbd8972
--- /dev/null
+++ b/identity/aidl/default/common/PresentationSession.cpp
@@ -0,0 +1,149 @@
+/*
+ * Copyright 2021, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "PresentationSession"
+
+#include "PresentationSession.h"
+#include "IdentityCredentialStore.h"
+
+#include <android/hardware/identity/support/IdentityCredentialSupport.h>
+
+#include <string.h>
+
+#include <android-base/logging.h>
+#include <android-base/stringprintf.h>
+
+#include <cppbor.h>
+#include <cppbor_parse.h>
+
+#include "FakeSecureHardwareProxy.h"
+#include "IdentityCredential.h"
+#include "PresentationSession.h"
+
+namespace aidl::android::hardware::identity {
+
+using ::std::optional;
+
+using namespace ::android::hardware::identity;
+
+PresentationSession::~PresentationSession() {}
+
+int PresentationSession::initialize() {
+    if (!hwProxy_->initialize()) {
+        LOG(ERROR) << "hwProxy->initialize failed";
+        return IIdentityCredentialStore::STATUS_FAILED;
+    }
+
+    optional<uint64_t> id = hwProxy_->getId();
+    if (!id) {
+        LOG(ERROR) << "Error getting id for session";
+        return IIdentityCredentialStore::STATUS_FAILED;
+    }
+    id_ = id.value();
+
+    optional<vector<uint8_t>> ephemeralKeyPriv = hwProxy_->getEphemeralKeyPair();
+    if (!ephemeralKeyPriv) {
+        LOG(ERROR) << "Error getting ephemeral private key for session";
+        return IIdentityCredentialStore::STATUS_FAILED;
+    }
+    optional<vector<uint8_t>> ephemeralKeyPair =
+            support::ecPrivateKeyToKeyPair(ephemeralKeyPriv.value());
+    if (!ephemeralKeyPair) {
+        LOG(ERROR) << "Error creating ephemeral key-pair";
+        return IIdentityCredentialStore::STATUS_FAILED;
+    }
+    ephemeralKeyPair_ = ephemeralKeyPair.value();
+
+    optional<uint64_t> authChallenge = hwProxy_->getAuthChallenge();
+    if (!authChallenge) {
+        LOG(ERROR) << "Error getting authChallenge for session";
+        return IIdentityCredentialStore::STATUS_FAILED;
+    }
+    authChallenge_ = authChallenge.value();
+
+    return IIdentityCredentialStore::STATUS_OK;
+}
+
+ndk::ScopedAStatus PresentationSession::getEphemeralKeyPair(vector<uint8_t>* outKeyPair) {
+    *outKeyPair = ephemeralKeyPair_;
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus PresentationSession::getAuthChallenge(int64_t* outChallenge) {
+    *outChallenge = authChallenge_;
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus PresentationSession::setReaderEphemeralPublicKey(
+        const vector<uint8_t>& publicKey) {
+    // We expect the reader ephemeral public key to be same size and curve
+    // as the ephemeral key we generated (e.g. P-256 key), otherwise ECDH
+    // won't work. So its length should be 65 bytes and it should be
+    // starting with 0x04.
+    if (publicKey.size() != 65 || publicKey[0] != 0x04) {
+        return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
+                IIdentityCredentialStore::STATUS_FAILED,
+                "Reader public key is not in expected format"));
+    }
+    readerPublicKey_ = publicKey;
+    vector<uint8_t> pubKeyP256(publicKey.begin() + 1, publicKey.end());
+    if (!hwProxy_->setReaderEphemeralPublicKey(pubKeyP256)) {
+        return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
+                IIdentityCredentialStore::STATUS_FAILED,
+                "Error setting readerEphemeralPublicKey for session"));
+    }
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus PresentationSession::setSessionTranscript(
+        const vector<uint8_t>& sessionTranscript) {
+    sessionTranscript_ = sessionTranscript;
+    if (!hwProxy_->setSessionTranscript(sessionTranscript)) {
+        return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
+                IIdentityCredentialStore::STATUS_FAILED,
+                "Error setting SessionTranscript for session"));
+    }
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus PresentationSession::getCredential(
+        const vector<uint8_t>& credentialData, shared_ptr<IIdentityCredential>* outCredential) {
+    shared_ptr<PresentationSession> p = ref<PresentationSession>();
+    shared_ptr<IdentityCredential> credential =
+            ndk::SharedRefBase::make<IdentityCredential>(hwProxyFactory_, credentialData, p);
+    int ret = credential->initialize();
+    if (ret != IIdentityCredentialStore::STATUS_OK) {
+        return ndk::ScopedAStatus(AStatus_fromServiceSpecificErrorWithMessage(
+                ret, "Error initializing IdentityCredential"));
+    }
+    *outCredential = std::move(credential);
+
+    return ndk::ScopedAStatus::ok();
+}
+
+uint64_t PresentationSession::getSessionId() {
+    return id_;
+}
+
+vector<uint8_t> PresentationSession::getSessionTranscript() {
+    return sessionTranscript_;
+}
+
+vector<uint8_t> PresentationSession::getReaderEphemeralPublicKey() {
+    return readerPublicKey_;
+}
+
+}  // namespace aidl::android::hardware::identity
diff --git a/identity/aidl/default/common/PresentationSession.h b/identity/aidl/default/common/PresentationSession.h
new file mode 100644
index 0000000..76ca67b
--- /dev/null
+++ b/identity/aidl/default/common/PresentationSession.h
@@ -0,0 +1,83 @@
+/*
+ * Copyright 2021, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_IDENTITY_PRESENTATIONSESSION_H
+#define ANDROID_HARDWARE_IDENTITY_PRESENTATIONSESSION_H
+
+#include <aidl/android/hardware/identity/BnPresentationSession.h>
+#include <android/hardware/identity/support/IdentityCredentialSupport.h>
+
+#include <vector>
+
+#include <cppbor.h>
+
+#include "IdentityCredentialStore.h"
+#include "SecureHardwareProxy.h"
+
+namespace aidl::android::hardware::identity {
+
+using ::aidl::android::hardware::keymaster::HardwareAuthToken;
+using ::aidl::android::hardware::keymaster::VerificationToken;
+using ::android::sp;
+using ::android::hardware::identity::SecureHardwareSessionProxy;
+using ::std::vector;
+
+class PresentationSession : public BnPresentationSession {
+  public:
+    PresentationSession(sp<SecureHardwareProxyFactory> hwProxyFactory,
+                        sp<SecureHardwareSessionProxy> hwProxy)
+        : hwProxyFactory_(std::move(hwProxyFactory)), hwProxy_(std::move(hwProxy)) {}
+
+    virtual ~PresentationSession();
+
+    // Creates ephemeral key and auth-challenge in TA. Returns a status code from
+    // IIdentityCredentialStore. Must be called right after construction.
+    int initialize();
+
+    uint64_t getSessionId();
+
+    vector<uint8_t> getSessionTranscript();
+    vector<uint8_t> getReaderEphemeralPublicKey();
+
+    // Methods from IPresentationSession follow.
+    ndk::ScopedAStatus getEphemeralKeyPair(vector<uint8_t>* outKeyPair) override;
+    ndk::ScopedAStatus getAuthChallenge(int64_t* outChallenge) override;
+    ndk::ScopedAStatus setReaderEphemeralPublicKey(const vector<uint8_t>& publicKey) override;
+    ndk::ScopedAStatus setSessionTranscript(const vector<uint8_t>& sessionTranscript) override;
+
+    ndk::ScopedAStatus getCredential(const vector<uint8_t>& credentialData,
+                                     shared_ptr<IIdentityCredential>* outCredential) override;
+
+  private:
+    // Set by constructor
+    sp<SecureHardwareProxyFactory> hwProxyFactory_;
+    sp<SecureHardwareSessionProxy> hwProxy_;
+
+    // Set by initialize()
+    uint64_t id_;
+    vector<uint8_t> ephemeralKeyPair_;
+    uint64_t authChallenge_;
+
+    // Set by setReaderEphemeralPublicKey()
+    vector<uint8_t> readerPublicKey_;
+
+    // Set by setSessionTranscript()
+    vector<uint8_t> sessionTranscript_;
+};
+
+}  // namespace aidl::android::hardware::identity
+
+#endif  // ANDROID_HARDWARE_IDENTITY_PRESENTATIONSESSION_H
diff --git a/identity/aidl/default/common/SecureHardwareProxy.h b/identity/aidl/default/common/SecureHardwareProxy.h
index a1ed1ef..a580444 100644
--- a/identity/aidl/default/common/SecureHardwareProxy.h
+++ b/identity/aidl/default/common/SecureHardwareProxy.h
@@ -42,6 +42,7 @@
 // Forward declare.
 //
 class SecureHardwareProvisioningProxy;
+class SecureHardwareSessionProxy;
 class SecureHardwarePresentationProxy;
 
 // This is a class used to create proxies.
@@ -52,6 +53,7 @@
     virtual ~SecureHardwareProxyFactory() {}
 
     virtual sp<SecureHardwareProvisioningProxy> createProvisioningProxy() = 0;
+    virtual sp<SecureHardwareSessionProxy> createSessionProxy() = 0;
     virtual sp<SecureHardwarePresentationProxy> createPresentationProxy() = 0;
 };
 
@@ -64,8 +66,12 @@
 
     virtual bool initialize(bool testCredential) = 0;
 
-    virtual bool initializeForUpdate(bool testCredential, string docType,
-                                     vector<uint8_t> encryptedCredentialKeys) = 0;
+    virtual bool initializeForUpdate(bool testCredential, const string& docType,
+                                     const vector<uint8_t>& encryptedCredentialKeys) = 0;
+
+    virtual optional<uint32_t> getId() = 0;
+
+    virtual bool shutdown() = 0;
 
     // Returns public key certificate chain with attestation.
     //
@@ -76,7 +82,7 @@
     virtual optional<vector<uint8_t>> createCredentialKey(const vector<uint8_t>& challenge,
                                                           const vector<uint8_t>& applicationId) = 0;
 
-    virtual bool startPersonalization(int accessControlProfileCount, vector<int> entryCounts,
+    virtual bool startPersonalization(int accessControlProfileCount, const vector<int>& entryCounts,
                                       const string& docType,
                                       size_t expectedProofOfProvisioningSize) = 0;
 
@@ -98,8 +104,6 @@
 
     // Returns encryptedCredentialKeys (80 bytes).
     virtual optional<vector<uint8_t>> finishGetCredentialData(const string& docType) = 0;
-
-    virtual bool shutdown() = 0;
 };
 
 enum AccessCheckResult {
@@ -110,6 +114,30 @@
     kReaderAuthenticationFailed,
 };
 
+// The proxy used for sessions.
+//
+class SecureHardwareSessionProxy : public RefBase {
+  public:
+    SecureHardwareSessionProxy() {}
+
+    virtual ~SecureHardwareSessionProxy() {}
+
+    virtual bool initialize() = 0;
+
+    virtual optional<uint32_t> getId() = 0;
+
+    virtual bool shutdown() = 0;
+
+    virtual optional<uint64_t> getAuthChallenge() = 0;
+
+    // Returns private key
+    virtual optional<vector<uint8_t>> getEphemeralKeyPair() = 0;
+
+    virtual bool setReaderEphemeralPublicKey(const vector<uint8_t>& readerEphemeralPublicKey) = 0;
+
+    virtual bool setSessionTranscript(const vector<uint8_t>& sessionTranscript) = 0;
+};
+
 // The proxy used for presentation.
 //
 class SecureHardwarePresentationProxy : public RefBase {
@@ -117,12 +145,16 @@
     SecureHardwarePresentationProxy() {}
     virtual ~SecureHardwarePresentationProxy() {}
 
-    virtual bool initialize(bool testCredential, string docType,
-                            vector<uint8_t> encryptedCredentialKeys) = 0;
+    virtual bool initialize(uint32_t sessionId, bool testCredential, const string& docType,
+                            const vector<uint8_t>& encryptedCredentialKeys) = 0;
+
+    virtual optional<uint32_t> getId() = 0;
+
+    virtual bool shutdown() = 0;
 
     // Returns publicKeyCert (1st component) and signingKeyBlob (2nd component)
-    virtual optional<pair<vector<uint8_t>, vector<uint8_t>>> generateSigningKeyPair(string docType,
-                                                                                    time_t now) = 0;
+    virtual optional<pair<vector<uint8_t>, vector<uint8_t>>> generateSigningKeyPair(
+            const string& docType, time_t now) = 0;
 
     // Returns private key
     virtual optional<vector<uint8_t>> createEphemeralKeyPair() = 0;
@@ -174,8 +206,6 @@
     virtual optional<vector<uint8_t>> proveOwnership(const string& docType, bool testCredential,
                                                      const vector<uint8_t>& challenge,
                                                      size_t proofOfOwnershipCborSize) = 0;
-
-    virtual bool shutdown() = 0;
 };
 
 }  // namespace android::hardware::identity
diff --git a/identity/aidl/default/identity-default.xml b/identity/aidl/default/identity-default.xml
index a074250..cc0ddc7 100644
--- a/identity/aidl/default/identity-default.xml
+++ b/identity/aidl/default/identity-default.xml
@@ -1,7 +1,7 @@
 <manifest version="1.0" type="device">
     <hal format="aidl">
         <name>android.hardware.identity</name>
-        <version>3</version>
+        <version>4</version>
         <interface>
             <name>IIdentityCredentialStore</name>
             <instance>default</instance>
diff --git a/identity/aidl/default/libeic/EicCommon.h b/identity/aidl/default/libeic/EicCommon.h
index 476276e..2a08a35 100644
--- a/identity/aidl/default/libeic/EicCommon.h
+++ b/identity/aidl/default/libeic/EicCommon.h
@@ -21,6 +21,9 @@
 #ifndef ANDROID_HARDWARE_IDENTITY_EIC_COMMON_H
 #define ANDROID_HARDWARE_IDENTITY_EIC_COMMON_H
 
+// KeyMint auth-challenges are 64-bit numbers and 0 typically means unset.
+#define EIC_KM_AUTH_CHALLENGE_UNSET 0
+
 // Feature version 202009:
 //
 //         CredentialKeys = [
diff --git a/identity/aidl/default/libeic/EicOps.h b/identity/aidl/default/libeic/EicOps.h
index d4fcf0e..aa26e62 100644
--- a/identity/aidl/default/libeic/EicOps.h
+++ b/identity/aidl/default/libeic/EicOps.h
@@ -141,6 +141,10 @@
 // String length, see strlen(3).
 size_t eicStrLen(const char* s);
 
+// Locate a substring, see memmem(3)
+void* eicMemMem(const uint8_t* haystack, size_t haystackLen, const uint8_t* needle,
+                size_t needleLen);
+
 // Memory compare, see CRYPTO_memcmp(3SSL)
 //
 // It takes an amount of time dependent on len, but independent of the contents of the
@@ -151,6 +155,12 @@
 // Random number generation.
 bool eicOpsRandom(uint8_t* buf, size_t numBytes);
 
+// Creates a new non-zero identifier in |id|.
+//
+// Is guaranteed to be non-zero and different than what is already in |id|.
+//
+bool eicNextId(uint32_t* id);
+
 // If |testCredential| is true, returns the 128-bit AES Hardware-Bound Key (16 bytes).
 //
 // Otherwise returns all zeroes (16 bytes).
@@ -295,6 +305,8 @@
                              int verificationTokenSecurityLevel,
                              const uint8_t* verificationTokenMac, size_t verificationTokenMacSize);
 
+// Also see eicOpsLookupActiveSessionFromId() defined in EicSession.h
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/identity/aidl/default/libeic/EicPresentation.c b/identity/aidl/default/libeic/EicPresentation.c
index 0d03ae9..104a559 100644
--- a/identity/aidl/default/libeic/EicPresentation.c
+++ b/identity/aidl/default/libeic/EicPresentation.c
@@ -16,11 +16,17 @@
 
 #include "EicPresentation.h"
 #include "EicCommon.h"
+#include "EicSession.h"
 
 #include <inttypes.h>
 
-bool eicPresentationInit(EicPresentation* ctx, bool testCredential, const char* docType,
-                         size_t docTypeLength, const uint8_t* encryptedCredentialKeys,
+// Global used for assigning ids for presentation objects.
+//
+static uint32_t gPresentationLastIdAssigned = 0;
+
+bool eicPresentationInit(EicPresentation* ctx, uint32_t sessionId, bool testCredential,
+                         const char* docType, size_t docTypeLength,
+                         const uint8_t* encryptedCredentialKeys,
                          size_t encryptedCredentialKeysSize) {
     uint8_t credentialKeys[EIC_CREDENTIAL_KEYS_CBOR_SIZE_FEATURE_VERSION_202101];
     bool expectPopSha256 = false;
@@ -39,6 +45,13 @@
     }
 
     eicMemSet(ctx, '\0', sizeof(EicPresentation));
+    ctx->sessionId = sessionId;
+
+    if (!eicNextId(&gPresentationLastIdAssigned)) {
+        eicDebug("Error getting id for object");
+        return false;
+    }
+    ctx->id = gPresentationLastIdAssigned;
 
     if (!eicOpsDecryptAes128Gcm(eicOpsGetHardwareBoundKey(testCredential), encryptedCredentialKeys,
                                 encryptedCredentialKeysSize,
@@ -86,6 +99,23 @@
     if (expectPopSha256) {
         eicMemCpy(ctx->proofOfProvisioningSha256, credentialKeys + 54, EIC_SHA256_DIGEST_SIZE);
     }
+
+    eicDebug("Initialized presentation with id %" PRIu32, ctx->id);
+    return true;
+}
+
+bool eicPresentationShutdown(EicPresentation* ctx) {
+    if (ctx->id == 0) {
+        eicDebug("Trying to shut down presentation with id 0");
+        return false;
+    }
+    eicDebug("Shut down presentation with id %" PRIu32, ctx->id);
+    eicMemSet(ctx, '\0', sizeof(EicPresentation));
+    return true;
+}
+
+bool eicPresentationGetId(EicPresentation* ctx, uint32_t* outId) {
+    *outId = ctx->id;
     return true;
 }
 
@@ -174,7 +204,7 @@
             eicDebug("Failed generating random challenge");
             return false;
         }
-    } while (ctx->authChallenge == 0);
+    } while (ctx->authChallenge == EIC_KM_AUTH_CHALLENGE_UNSET);
     eicDebug("Created auth challenge %" PRIu64, ctx->authChallenge);
     *authChallenge = ctx->authChallenge;
     return true;
@@ -190,6 +220,24 @@
                                            int coseSignAlg,
                                            const uint8_t* readerSignatureOfToBeSigned,
                                            size_t readerSignatureOfToBeSignedSize) {
+    if (ctx->sessionId != 0) {
+        EicSession* session = eicSessionGetForId(ctx->sessionId);
+        if (session == NULL) {
+            eicDebug("Error looking up session for sessionId %" PRIu32, ctx->sessionId);
+            return false;
+        }
+        EicSha256Ctx sha256;
+        uint8_t sessionTranscriptSha256[EIC_SHA256_DIGEST_SIZE];
+        eicOpsSha256Init(&sha256);
+        eicOpsSha256Update(&sha256, sessionTranscript, sessionTranscriptSize);
+        eicOpsSha256Final(&sha256, sessionTranscriptSha256);
+        if (eicCryptoMemCmp(sessionTranscriptSha256, session->sessionTranscriptSha256,
+                            EIC_SHA256_DIGEST_SIZE) != 0) {
+            eicDebug("SessionTranscript mismatch");
+            return false;
+        }
+    }
+
     if (ctx->readerPublicKeySize == 0) {
         eicDebug("No public key for reader");
         return false;
@@ -330,6 +378,20 @@
     return true;
 }
 
+static bool getChallenge(EicPresentation* ctx, uint64_t* outAuthChallenge) {
+    // Use authChallenge from session if applicable.
+    *outAuthChallenge = ctx->authChallenge;
+    if (ctx->sessionId != 0) {
+        EicSession* session = eicSessionGetForId(ctx->sessionId);
+        if (session == NULL) {
+            eicDebug("Error looking up session for sessionId %" PRIu32, ctx->sessionId);
+            return false;
+        }
+        *outAuthChallenge = session->authChallenge;
+    }
+    return true;
+}
+
 bool eicPresentationSetAuthToken(EicPresentation* ctx, uint64_t challenge, uint64_t secureUserId,
                                  uint64_t authenticatorId, int hardwareAuthenticatorType,
                                  uint64_t timeStamp, const uint8_t* mac, size_t macSize,
@@ -338,14 +400,19 @@
                                  int verificationTokenSecurityLevel,
                                  const uint8_t* verificationTokenMac,
                                  size_t verificationTokenMacSize) {
+    uint64_t authChallenge;
+    if (!getChallenge(ctx, &authChallenge)) {
+        return false;
+    }
+
     // It doesn't make sense to accept any tokens if eicPresentationCreateAuthChallenge()
     // was never called.
-    if (ctx->authChallenge == 0) {
-        eicDebug("Trying validate tokens when no auth-challenge was previously generated");
+    if (authChallenge == EIC_KM_AUTH_CHALLENGE_UNSET) {
+        eicDebug("Trying to validate tokens when no auth-challenge was previously generated");
         return false;
     }
     // At least the verification-token must have the same challenge as what was generated.
-    if (verificationTokenChallenge != ctx->authChallenge) {
+    if (verificationTokenChallenge != authChallenge) {
         eicDebug("Challenge in verification token does not match the challenge "
                  "previously generated");
         return false;
@@ -354,6 +421,7 @@
                 challenge, secureUserId, authenticatorId, hardwareAuthenticatorType, timeStamp, mac,
                 macSize, verificationTokenChallenge, verificationTokenTimestamp,
                 verificationTokenSecurityLevel, verificationTokenMac, verificationTokenMacSize)) {
+        eicDebug("Error validating authToken");
         return false;
     }
     ctx->authTokenChallenge = challenge;
@@ -377,11 +445,16 @@
     // Only ACP with auth-on-every-presentation - those with timeout == 0 - need the
     // challenge to match...
     if (timeoutMillis == 0) {
-        if (ctx->authTokenChallenge != ctx->authChallenge) {
+        uint64_t authChallenge;
+        if (!getChallenge(ctx, &authChallenge)) {
+            return false;
+        }
+
+        if (ctx->authTokenChallenge != authChallenge) {
             eicDebug("Challenge in authToken (%" PRIu64
                      ") doesn't match the challenge "
                      "that was created (%" PRIu64 ") for this session",
-                     ctx->authTokenChallenge, ctx->authChallenge);
+                     ctx->authTokenChallenge, authChallenge);
             return false;
         }
     }
@@ -490,6 +563,25 @@
                                const uint8_t signingKeyBlob[60], const char* docType,
                                size_t docTypeLength, unsigned int numNamespacesWithValues,
                                size_t expectedDeviceNamespacesSize) {
+    if (ctx->sessionId != 0) {
+        EicSession* session = eicSessionGetForId(ctx->sessionId);
+        if (session == NULL) {
+            eicDebug("Error looking up session for sessionId %" PRIu32, ctx->sessionId);
+            return false;
+        }
+        EicSha256Ctx sha256;
+        uint8_t sessionTranscriptSha256[EIC_SHA256_DIGEST_SIZE];
+        eicOpsSha256Init(&sha256);
+        eicOpsSha256Update(&sha256, sessionTranscript, sessionTranscriptSize);
+        eicOpsSha256Final(&sha256, sessionTranscriptSha256);
+        if (eicCryptoMemCmp(sessionTranscriptSha256, session->sessionTranscriptSha256,
+                            EIC_SHA256_DIGEST_SIZE) != 0) {
+            eicDebug("SessionTranscript mismatch");
+            return false;
+        }
+        readerEphemeralPublicKey = session->readerEphemeralPublicKey;
+    }
+
     uint8_t signingKeyPriv[EIC_P256_PRIV_KEY_SIZE];
     if (!eicOpsDecryptAes128Gcm(ctx->storageKey, signingKeyBlob, 60, (const uint8_t*)docType,
                                 docTypeLength, signingKeyPriv)) {
diff --git a/identity/aidl/default/libeic/EicPresentation.h b/identity/aidl/default/libeic/EicPresentation.h
index 6f7f432..a031890 100644
--- a/identity/aidl/default/libeic/EicPresentation.h
+++ b/identity/aidl/default/libeic/EicPresentation.h
@@ -30,7 +30,13 @@
 // The maximum size we support for public keys in reader certificates.
 #define EIC_PRESENTATION_MAX_READER_PUBLIC_KEY_SIZE 65
 
+// Constant used to convey that no session is associated with a presentation.
+#define EIC_PRESENTATION_ID_UNSET 0
+
 typedef struct {
+    // A non-zero number unique for this EicPresentation instance
+    uint32_t id;
+
     int featureLevel;
 
     uint8_t storageKey[EIC_AES_128_KEY_SIZE];
@@ -38,6 +44,10 @@
 
     uint8_t ephemeralPrivateKey[EIC_P256_PRIV_KEY_SIZE];
 
+    // If non-zero (not EIC_PRESENTATION_ID_UNSET), the id of the EicSession object this
+    // presentation object is associated with.
+    uint32_t sessionId;
+
     // The challenge generated with eicPresentationCreateAuthChallenge()
     uint64_t authChallenge;
 
@@ -93,10 +103,18 @@
     EicCbor cbor;
 } EicPresentation;
 
-bool eicPresentationInit(EicPresentation* ctx, bool testCredential, const char* docType,
-                         size_t docTypeLength, const uint8_t* encryptedCredentialKeys,
+// If sessionId is zero (EIC_PRESENTATION_ID_UNSET), the presentation object is not associated
+// with a session object. Otherwise it's the id of the session object.
+//
+bool eicPresentationInit(EicPresentation* ctx, uint32_t sessionId, bool testCredential,
+                         const char* docType, size_t docTypeLength,
+                         const uint8_t* encryptedCredentialKeys,
                          size_t encryptedCredentialKeysSize);
 
+bool eicPresentationShutdown(EicPresentation* ctx);
+
+bool eicPresentationGetId(EicPresentation* ctx, uint32_t* outId);
+
 bool eicPresentationGenerateSigningKeyPair(EicPresentation* ctx, const char* docType,
                                            size_t docTypeLength, time_t now,
                                            uint8_t* publicKeyCert, size_t* publicKeyCertSize,
diff --git a/identity/aidl/default/libeic/EicProvisioning.c b/identity/aidl/default/libeic/EicProvisioning.c
index c9df4fd..a241b71 100644
--- a/identity/aidl/default/libeic/EicProvisioning.c
+++ b/identity/aidl/default/libeic/EicProvisioning.c
@@ -17,8 +17,21 @@
 #include "EicProvisioning.h"
 #include "EicCommon.h"
 
+#include <inttypes.h>
+
+// Global used for assigning ids for provisioning objects.
+//
+static uint32_t gProvisioningLastIdAssigned = 0;
+
 bool eicProvisioningInit(EicProvisioning* ctx, bool testCredential) {
     eicMemSet(ctx, '\0', sizeof(EicProvisioning));
+
+    if (!eicNextId(&gProvisioningLastIdAssigned)) {
+        eicDebug("Error getting id for object");
+        return false;
+    }
+    ctx->id = gProvisioningLastIdAssigned;
+
     ctx->testCredential = testCredential;
     if (!eicOpsRandom(ctx->storageKey, EIC_AES_128_KEY_SIZE)) {
         return false;
@@ -47,6 +60,13 @@
     }
 
     eicMemSet(ctx, '\0', sizeof(EicProvisioning));
+
+    if (!eicNextId(&gProvisioningLastIdAssigned)) {
+        eicDebug("Error getting id for object");
+        return false;
+    }
+    ctx->id = gProvisioningLastIdAssigned;
+
     ctx->testCredential = testCredential;
 
     if (!eicOpsDecryptAes128Gcm(eicOpsGetHardwareBoundKey(testCredential), encryptedCredentialKeys,
@@ -96,6 +116,21 @@
     return true;
 }
 
+bool eicProvisioningShutdown(EicProvisioning* ctx) {
+    if (ctx->id == 0) {
+        eicDebug("Trying to shut down provsioning with id 0");
+        return false;
+    }
+    eicDebug("Shut down provsioning with id %" PRIu32, ctx->id);
+    eicMemSet(ctx, '\0', sizeof(EicProvisioning));
+    return true;
+}
+
+bool eicProvisioningGetId(EicProvisioning* ctx, uint32_t* outId) {
+    *outId = ctx->id;
+    return true;
+}
+
 bool eicProvisioningCreateCredentialKey(EicProvisioning* ctx, const uint8_t* challenge,
                                         size_t challengeSize, const uint8_t* applicationId,
                                         size_t applicationIdSize, uint8_t* publicKeyCert,
diff --git a/identity/aidl/default/libeic/EicProvisioning.h b/identity/aidl/default/libeic/EicProvisioning.h
index 92f1e4a..d94f8f1 100644
--- a/identity/aidl/default/libeic/EicProvisioning.h
+++ b/identity/aidl/default/libeic/EicProvisioning.h
@@ -31,6 +31,9 @@
 #define EIC_MAX_NUM_ACCESS_CONTROL_PROFILE_IDS 32
 
 typedef struct {
+    // A non-zero number unique for this EicProvisioning instance
+    uint32_t id;
+
     // Set by eicCreateCredentialKey() OR eicProvisioningInitForUpdate()
     uint8_t credentialPrivateKey[EIC_P256_PRIV_KEY_SIZE];
 
@@ -68,6 +71,10 @@
                                   size_t docTypeLength, const uint8_t* encryptedCredentialKeys,
                                   size_t encryptedCredentialKeysSize);
 
+bool eicProvisioningShutdown(EicProvisioning* ctx);
+
+bool eicProvisioningGetId(EicProvisioning* ctx, uint32_t* outId);
+
 bool eicProvisioningCreateCredentialKey(EicProvisioning* ctx, const uint8_t* challenge,
                                         size_t challengeSize, const uint8_t* applicationId,
                                         size_t applicationIdSize, uint8_t* publicKeyCert,
diff --git a/identity/aidl/default/libeic/EicSession.c b/identity/aidl/default/libeic/EicSession.c
new file mode 100644
index 0000000..d0c7a0d
--- /dev/null
+++ b/identity/aidl/default/libeic/EicSession.c
@@ -0,0 +1,120 @@
+/*
+ * Copyright 2020, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <inttypes.h>
+
+#include "EicCommon.h"
+#include "EicSession.h"
+
+// Global used for assigning ids for session objects.
+//
+static uint32_t gSessionLastIdAssigned = 0;
+
+// The current session object or NULL if never initialized or if it has been shut down.
+//
+static EicSession* gSessionCurrent = NULL;
+
+EicSession* eicSessionGetForId(uint32_t sessionId) {
+    if (gSessionCurrent != NULL && gSessionCurrent->id == sessionId) {
+        return gSessionCurrent;
+    }
+    return NULL;
+}
+
+bool eicSessionInit(EicSession* ctx) {
+    eicMemSet(ctx, '\0', sizeof(EicSession));
+
+    if (!eicNextId(&gSessionLastIdAssigned)) {
+        eicDebug("Error getting id for object");
+        return false;
+    }
+    ctx->id = gSessionLastIdAssigned;
+
+    do {
+        if (!eicOpsRandom((uint8_t*)&(ctx->authChallenge), sizeof(ctx->authChallenge))) {
+            eicDebug("Failed generating random challenge");
+            return false;
+        }
+    } while (ctx->authChallenge == EIC_KM_AUTH_CHALLENGE_UNSET);
+
+    if (!eicOpsCreateEcKey(ctx->ephemeralPrivateKey, ctx->ephemeralPublicKey)) {
+        eicDebug("Error creating ephemeral key-pair");
+        return false;
+    }
+
+    gSessionCurrent = ctx;
+    eicDebug("Initialized session with id %" PRIu32, ctx->id);
+    return true;
+}
+
+bool eicSessionShutdown(EicSession* ctx) {
+    if (ctx->id == 0) {
+        eicDebug("Trying to shut down session with id 0");
+        return false;
+    }
+    eicDebug("Shut down session with id %" PRIu32, ctx->id);
+    eicMemSet(ctx, '\0', sizeof(EicSession));
+    gSessionCurrent = NULL;
+    return true;
+}
+
+bool eicSessionGetId(EicSession* ctx, uint32_t* outId) {
+    *outId = ctx->id;
+    return true;
+}
+
+bool eicSessionGetAuthChallenge(EicSession* ctx, uint64_t* outAuthChallenge) {
+    *outAuthChallenge = ctx->authChallenge;
+    return true;
+}
+
+bool eicSessionGetEphemeralKeyPair(EicSession* ctx,
+                                   uint8_t ephemeralPrivateKey[EIC_P256_PRIV_KEY_SIZE]) {
+    eicMemCpy(ephemeralPrivateKey, ctx->ephemeralPrivateKey, EIC_P256_PRIV_KEY_SIZE);
+    return true;
+}
+
+bool eicSessionSetReaderEphemeralPublicKey(
+        EicSession* ctx, const uint8_t readerEphemeralPublicKey[EIC_P256_PUB_KEY_SIZE]) {
+    eicMemCpy(ctx->readerEphemeralPublicKey, readerEphemeralPublicKey, EIC_P256_PUB_KEY_SIZE);
+    return true;
+}
+
+bool eicSessionSetSessionTranscript(EicSession* ctx, const uint8_t* sessionTranscript,
+                                    size_t sessionTranscriptSize) {
+    // Only accept the SessionTranscript if X and Y from the ephemeral key
+    // we created is somewhere in SessionTranscript...
+    //
+    if (eicMemMem(sessionTranscript, sessionTranscriptSize, ctx->ephemeralPublicKey,
+                  EIC_P256_PUB_KEY_SIZE / 2) == NULL) {
+        eicDebug("Error finding X from ephemeralPublicKey in sessionTranscript");
+        return false;
+    }
+    if (eicMemMem(sessionTranscript, sessionTranscriptSize,
+                  ctx->ephemeralPublicKey + EIC_P256_PUB_KEY_SIZE / 2,
+                  EIC_P256_PUB_KEY_SIZE / 2) == NULL) {
+        eicDebug("Error finding Y from ephemeralPublicKey in sessionTranscript");
+        return false;
+    }
+
+    // To save space we only store the SHA-256 of SessionTranscript
+    //
+    EicSha256Ctx shaCtx;
+    eicOpsSha256Init(&shaCtx);
+    eicOpsSha256Update(&shaCtx, sessionTranscript, sessionTranscriptSize);
+    eicOpsSha256Final(&shaCtx, ctx->sessionTranscriptSha256);
+    return true;
+}
diff --git a/identity/aidl/default/libeic/EicSession.h b/identity/aidl/default/libeic/EicSession.h
new file mode 100644
index 0000000..0303dae
--- /dev/null
+++ b/identity/aidl/default/libeic/EicSession.h
@@ -0,0 +1,73 @@
+/*
+ * Copyright 2021, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#if !defined(EIC_INSIDE_LIBEIC_H) && !defined(EIC_COMPILATION)
+#error "Never include this file directly, include libeic.h instead."
+#endif
+
+#ifndef ANDROID_HARDWARE_IDENTITY_EIC_SESSION_H
+#define ANDROID_HARDWARE_IDENTITY_EIC_SESSION_H
+
+#include "EicOps.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+    // A non-zero number unique for this EicSession instance
+    uint32_t id;
+
+    // The challenge generated at construction time by eicSessionInit().
+    uint64_t authChallenge;
+
+    uint8_t ephemeralPrivateKey[EIC_P256_PRIV_KEY_SIZE];
+    uint8_t ephemeralPublicKey[EIC_P256_PUB_KEY_SIZE];
+
+    uint8_t readerEphemeralPublicKey[EIC_P256_PUB_KEY_SIZE];
+
+    uint8_t sessionTranscriptSha256[EIC_SHA256_DIGEST_SIZE];
+
+} EicSession;
+
+bool eicSessionInit(EicSession* ctx);
+
+bool eicSessionShutdown(EicSession* ctx);
+
+bool eicSessionGetId(EicSession* ctx, uint32_t* outId);
+
+bool eicSessionGetAuthChallenge(EicSession* ctx, uint64_t* outAuthChallenge);
+
+bool eicSessionGetEphemeralKeyPair(EicSession* ctx,
+                                   uint8_t ephemeralPrivateKey[EIC_P256_PRIV_KEY_SIZE]);
+
+bool eicSessionSetReaderEphemeralPublicKey(
+        EicSession* ctx, const uint8_t readerEphemeralPublicKey[EIC_P256_PUB_KEY_SIZE]);
+
+bool eicSessionSetSessionTranscript(EicSession* ctx, const uint8_t* sessionTranscript,
+                                    size_t sessionTranscriptSize);
+
+// Looks up an active session with the given id.
+//
+// Returns NULL if no active session with the given id is found.
+//
+EicSession* eicSessionGetForId(uint32_t sessionId);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  // ANDROID_HARDWARE_IDENTITY_EIC_PRESENTATION_H
diff --git a/identity/aidl/default/libeic/libeic.h b/identity/aidl/default/libeic/libeic.h
index 20c8896..d89fc9a 100644
--- a/identity/aidl/default/libeic/libeic.h
+++ b/identity/aidl/default/libeic/libeic.h
@@ -27,10 +27,11 @@
  */
 #define EIC_INSIDE_LIBEIC_H
 #include "EicCbor.h"
+#include "EicCommon.h"
 #include "EicOps.h"
 #include "EicPresentation.h"
 #include "EicProvisioning.h"
-#include "EicCommon.h"
+#include "EicSession.h"
 #undef EIC_INSIDE_LIBEIC_H
 
 #ifdef __cplusplus
diff --git a/identity/aidl/vts/Android.bp b/identity/aidl/vts/Android.bp
index e5de91e..7b6f2c8 100644
--- a/identity/aidl/vts/Android.bp
+++ b/identity/aidl/vts/Android.bp
@@ -28,6 +28,7 @@
         "EndToEndTests.cpp",
         "TestCredentialTests.cpp",
         "AuthenticationKeyTests.cpp",
+        "PresentationSessionTests.cpp",
     ],
     shared_libs: [
         "libbinder",
@@ -40,9 +41,9 @@
         "libpuresoftkeymasterdevice",
         "android.hardware.keymaster@4.0",
         "android.hardware.identity-support-lib",
-        "android.hardware.identity-V3-cpp",
-        "android.hardware.keymaster-V3-cpp",
-        "android.hardware.keymaster-V3-ndk",
+        "android.hardware.identity-V4-cpp",
+        "android.hardware.keymaster-V4-cpp",
+        "android.hardware.keymaster-V4-ndk",
         "libkeymaster4support",
         "libkeymaster4_1support",
     ],
diff --git a/identity/aidl/vts/PresentationSessionTests.cpp b/identity/aidl/vts/PresentationSessionTests.cpp
new file mode 100644
index 0000000..88acb26
--- /dev/null
+++ b/identity/aidl/vts/PresentationSessionTests.cpp
@@ -0,0 +1,197 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "PresentationSessionTests"
+
+#include <aidl/Gtest.h>
+#include <aidl/Vintf.h>
+#include <aidl/android/hardware/keymaster/HardwareAuthToken.h>
+#include <aidl/android/hardware/keymaster/VerificationToken.h>
+#include <android-base/logging.h>
+#include <android/hardware/identity/IIdentityCredentialStore.h>
+#include <android/hardware/identity/support/IdentityCredentialSupport.h>
+#include <binder/IServiceManager.h>
+#include <binder/ProcessState.h>
+#include <cppbor.h>
+#include <cppbor_parse.h>
+#include <gtest/gtest.h>
+#include <future>
+#include <map>
+#include <utility>
+
+#include "Util.h"
+
+namespace android::hardware::identity {
+
+using std::endl;
+using std::make_pair;
+using std::map;
+using std::optional;
+using std::pair;
+using std::string;
+using std::tie;
+using std::vector;
+
+using ::android::sp;
+using ::android::String16;
+using ::android::binder::Status;
+
+using ::android::hardware::keymaster::HardwareAuthToken;
+using ::android::hardware::keymaster::VerificationToken;
+
+class PresentationSessionTests : public testing::TestWithParam<string> {
+  public:
+    virtual void SetUp() override {
+        credentialStore_ = android::waitForDeclaredService<IIdentityCredentialStore>(
+                String16(GetParam().c_str()));
+        ASSERT_NE(credentialStore_, nullptr);
+        halApiVersion_ = credentialStore_->getInterfaceVersion();
+    }
+
+    void provisionData();
+
+    void provisionSingleDocument(const string& docType, vector<uint8_t>* outCredentialData,
+                                 vector<uint8_t>* outCredentialPubKey);
+
+    // Set by provisionData
+    vector<uint8_t> credential1Data_;
+    vector<uint8_t> credential1PubKey_;
+    vector<uint8_t> credential2Data_;
+    vector<uint8_t> credential2PubKey_;
+
+    sp<IIdentityCredentialStore> credentialStore_;
+    int halApiVersion_;
+};
+
+void PresentationSessionTests::provisionData() {
+    provisionSingleDocument("org.iso.18013-5.2019.mdl", &credential1Data_, &credential1PubKey_);
+    provisionSingleDocument("org.blah.OtherhDocTypeXX", &credential2Data_, &credential2PubKey_);
+}
+
+void PresentationSessionTests::provisionSingleDocument(const string& docType,
+                                                       vector<uint8_t>* outCredentialData,
+                                                       vector<uint8_t>* outCredentialPubKey) {
+    bool testCredential = true;
+    sp<IWritableIdentityCredential> wc;
+    ASSERT_TRUE(credentialStore_->createCredential(docType, testCredential, &wc).isOk());
+
+    vector<uint8_t> attestationApplicationId;
+    vector<uint8_t> attestationChallenge = {1};
+    vector<Certificate> certChain;
+    ASSERT_TRUE(wc->getAttestationCertificate(attestationApplicationId, attestationChallenge,
+                                              &certChain)
+                        .isOk());
+
+    optional<vector<uint8_t>> optCredentialPubKey =
+            support::certificateChainGetTopMostKey(certChain[0].encodedCertificate);
+    ASSERT_TRUE(optCredentialPubKey);
+    *outCredentialPubKey = optCredentialPubKey.value();
+
+    size_t proofOfProvisioningSize = 106;
+    // Not in v1 HAL, may fail
+    wc->setExpectedProofOfProvisioningSize(proofOfProvisioningSize);
+
+    ASSERT_TRUE(wc->startPersonalization(1 /* numAccessControlProfiles */,
+                                         {1} /* numDataElementsPerNamespace */)
+                        .isOk());
+
+    // Access control profile 0: open access - don't care about the returned SACP
+    SecureAccessControlProfile sacp;
+    ASSERT_TRUE(wc->addAccessControlProfile(1, {}, false, 0, 0, &sacp).isOk());
+
+    // Single entry - don't care about the returned encrypted data
+    ASSERT_TRUE(wc->beginAddEntry({1}, "ns", "Some Data", 1).isOk());
+    vector<uint8_t> encryptedData;
+    ASSERT_TRUE(wc->addEntryValue({9}, &encryptedData).isOk());
+
+    vector<uint8_t> proofOfProvisioningSignature;
+    Status status = wc->finishAddingEntries(outCredentialData, &proofOfProvisioningSignature);
+    EXPECT_TRUE(status.isOk()) << status.exceptionCode() << ": " << status.exceptionMessage();
+}
+
+// This checks that any methods called on an IIdentityCredential obtained via a session
+// returns STATUS_FAILED except for startRetrieval(), startRetrieveEntryValue(),
+// retrieveEntryValue(), finishRetrieval(), setRequestedNamespaces(), setVerificationToken()
+//
+TEST_P(PresentationSessionTests, returnsFailureOnUnsupportedMethods) {
+    if (halApiVersion_ < 4) {
+        GTEST_SKIP() << "Need HAL API version 4, have " << halApiVersion_;
+    }
+
+    provisionData();
+
+    sp<IPresentationSession> session;
+    ASSERT_TRUE(credentialStore_
+                        ->createPresentationSession(
+                                CipherSuite::CIPHERSUITE_ECDHE_HKDF_ECDSA_WITH_AES_256_GCM_SHA256,
+                                &session)
+                        .isOk());
+
+    sp<IIdentityCredential> credential;
+    ASSERT_TRUE(session->getCredential(credential1Data_, &credential).isOk());
+
+    Status result;
+
+    vector<uint8_t> signatureProofOfDeletion;
+    result = credential->deleteCredential(&signatureProofOfDeletion);
+    EXPECT_EQ(binder::Status::EX_SERVICE_SPECIFIC, result.exceptionCode());
+    EXPECT_EQ(IIdentityCredentialStore::STATUS_FAILED, result.serviceSpecificErrorCode());
+
+    vector<uint8_t> ephemeralKeyPair;
+    result = credential->createEphemeralKeyPair(&ephemeralKeyPair);
+    EXPECT_EQ(binder::Status::EX_SERVICE_SPECIFIC, result.exceptionCode());
+    EXPECT_EQ(IIdentityCredentialStore::STATUS_FAILED, result.serviceSpecificErrorCode());
+
+    result = credential->setReaderEphemeralPublicKey({});
+    EXPECT_EQ(binder::Status::EX_SERVICE_SPECIFIC, result.exceptionCode());
+    EXPECT_EQ(IIdentityCredentialStore::STATUS_FAILED, result.serviceSpecificErrorCode());
+
+    int64_t authChallenge;
+    result = credential->createAuthChallenge(&authChallenge);
+    EXPECT_EQ(binder::Status::EX_SERVICE_SPECIFIC, result.exceptionCode());
+    EXPECT_EQ(IIdentityCredentialStore::STATUS_FAILED, result.serviceSpecificErrorCode());
+
+    Certificate certificate;
+    vector<uint8_t> signingKeyBlob;
+    result = credential->generateSigningKeyPair(&signingKeyBlob, &certificate);
+    EXPECT_EQ(binder::Status::EX_SERVICE_SPECIFIC, result.exceptionCode());
+    EXPECT_EQ(IIdentityCredentialStore::STATUS_FAILED, result.serviceSpecificErrorCode());
+
+    result = credential->deleteCredentialWithChallenge({}, &signatureProofOfDeletion);
+    EXPECT_EQ(binder::Status::EX_SERVICE_SPECIFIC, result.exceptionCode());
+    EXPECT_EQ(IIdentityCredentialStore::STATUS_FAILED, result.serviceSpecificErrorCode());
+
+    vector<uint8_t> signatureProofOfOwnership;
+    result = credential->proveOwnership({}, &signatureProofOfOwnership);
+    EXPECT_EQ(binder::Status::EX_SERVICE_SPECIFIC, result.exceptionCode());
+    EXPECT_EQ(IIdentityCredentialStore::STATUS_FAILED, result.serviceSpecificErrorCode());
+
+    sp<IWritableIdentityCredential> writableCredential;
+    result = credential->updateCredential(&writableCredential);
+    EXPECT_EQ(binder::Status::EX_SERVICE_SPECIFIC, result.exceptionCode());
+    EXPECT_EQ(IIdentityCredentialStore::STATUS_FAILED, result.serviceSpecificErrorCode());
+}
+
+// TODO: need to add tests to check that the returned IIdentityCredential works
+//       as intended.
+
+GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(PresentationSessionTests);
+INSTANTIATE_TEST_SUITE_P(
+        Identity, PresentationSessionTests,
+        testing::ValuesIn(android::getAidlHalInstanceNames(IIdentityCredentialStore::descriptor)),
+        android::PrintInstanceNameToString);
+
+}  // namespace android::hardware::identity
diff --git a/input/classifier/1.0/vts/functional/Android.bp b/input/classifier/1.0/vts/functional/Android.bp
index 58945d3..5ff1457 100644
--- a/input/classifier/1.0/vts/functional/Android.bp
+++ b/input/classifier/1.0/vts/functional/Android.bp
@@ -30,7 +30,10 @@
         ":inputconstants_aidl",
         "VtsHalInputClassifierV1_0TargetTest.cpp",
     ],
-    header_libs: ["jni_headers"],
+    header_libs: [
+        "jni_headers",
+        "libbinder_headers",
+    ],
     static_libs: [
         "android.hardware.input.classifier@1.0",
         "android.hardware.input.common@1.0",
diff --git a/input/common/aidl/Android.bp b/input/common/aidl/Android.bp
new file mode 100644
index 0000000..6cf64a6
--- /dev/null
+++ b/input/common/aidl/Android.bp
@@ -0,0 +1,22 @@
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "hardware_interfaces_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["hardware_interfaces_license"],
+}
+
+aidl_interface {
+    name: "android.hardware.input.common",
+    srcs: ["android/hardware/input/common/*.aidl"],
+    stability: "vintf",
+    backend: {
+        cpp: {
+            enabled: false,
+        },
+        java: {
+            enabled: false,
+        },
+    },
+}
diff --git a/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/Action.aidl b/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/Action.aidl
new file mode 100644
index 0000000..a2e0381
--- /dev/null
+++ b/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/Action.aidl
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.input.common;
+@Backing(type="int") @VintfStability
+enum Action {
+  DOWN = 0,
+  UP = 1,
+  MOVE = 2,
+  CANCEL = 3,
+  OUTSIDE = 4,
+  POINTER_DOWN = 5,
+  POINTER_UP = 6,
+  HOVER_MOVE = 7,
+  SCROLL = 8,
+  HOVER_ENTER = 9,
+  HOVER_EXIT = 10,
+  BUTTON_PRESS = 11,
+  BUTTON_RELEASE = 12,
+}
diff --git a/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/Axis.aidl b/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/Axis.aidl
new file mode 100644
index 0000000..2114c7d
--- /dev/null
+++ b/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/Axis.aidl
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.input.common;
+@Backing(type="int") @VintfStability
+enum Axis {
+  X = 0,
+  Y = 1,
+  PRESSURE = 2,
+  SIZE = 3,
+  TOUCH_MAJOR = 4,
+  TOUCH_MINOR = 5,
+  TOOL_MAJOR = 6,
+  TOOL_MINOR = 7,
+  ORIENTATION = 8,
+  VSCROLL = 9,
+  HSCROLL = 10,
+  Z = 11,
+  RX = 12,
+  RY = 13,
+  RZ = 14,
+  HAT_X = 15,
+  HAT_Y = 16,
+  LTRIGGER = 17,
+  RTRIGGER = 18,
+  THROTTLE = 19,
+  RUDDER = 20,
+  WHEEL = 21,
+  GAS = 22,
+  BRAKE = 23,
+  DISTANCE = 24,
+  TILT = 25,
+  SCROLL = 26,
+  RELATIVE_X = 27,
+  RELATIVE_Y = 28,
+  GENERIC_1 = 32,
+  GENERIC_2 = 33,
+  GENERIC_3 = 34,
+  GENERIC_4 = 35,
+  GENERIC_5 = 36,
+  GENERIC_6 = 37,
+  GENERIC_7 = 38,
+  GENERIC_8 = 39,
+  GENERIC_9 = 40,
+  GENERIC_10 = 41,
+  GENERIC_11 = 42,
+  GENERIC_12 = 43,
+  GENERIC_13 = 44,
+  GENERIC_14 = 45,
+  GENERIC_15 = 46,
+  GENERIC_16 = 47,
+}
diff --git a/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/Button.aidl b/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/Button.aidl
new file mode 100644
index 0000000..10ad65a
--- /dev/null
+++ b/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/Button.aidl
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.input.common;
+@Backing(type="int") @VintfStability
+enum Button {
+  NONE = 0,
+  PRIMARY = 1,
+  SECONDARY = 2,
+  TERTIARY = 4,
+  BACK = 8,
+  FORWARD = 16,
+  STYLUS_PRIMARY = 32,
+  STYLUS_SECONDARY = 64,
+}
diff --git a/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/Classification.aidl b/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/Classification.aidl
new file mode 100644
index 0000000..ddd5246
--- /dev/null
+++ b/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/Classification.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.input.common;
+@Backing(type="byte") @VintfStability
+enum Classification {
+  NONE = 0,
+  AMBIGUOUS_GESTURE = 1,
+  DEEP_PRESS = 2,
+}
diff --git a/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/EdgeFlag.aidl b/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/EdgeFlag.aidl
new file mode 100644
index 0000000..1040049
--- /dev/null
+++ b/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/EdgeFlag.aidl
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.input.common;
+@Backing(type="int") @VintfStability
+enum EdgeFlag {
+  NONE = 0,
+  TOP = 1,
+  BOTTOM = 2,
+  LEFT = 4,
+  RIGHT = 8,
+}
diff --git a/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/Flag.aidl b/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/Flag.aidl
new file mode 100644
index 0000000..d3fcd9f
--- /dev/null
+++ b/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/Flag.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.input.common;
+@Backing(type="int") @VintfStability
+enum Flag {
+  WINDOW_IS_OBSCURED = 1,
+  IS_GENERATED_GESTURE = 8,
+  TAINTED = -2147483648,
+}
diff --git a/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/Meta.aidl b/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/Meta.aidl
new file mode 100644
index 0000000..2c229f9
--- /dev/null
+++ b/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/Meta.aidl
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.input.common;
+@Backing(type="int") @VintfStability
+enum Meta {
+  NONE = 0,
+  ALT_ON = 2,
+  ALT_LEFT_ON = 16,
+  ALT_RIGHT_ON = 32,
+  SHIFT_ON = 1,
+  SHIFT_LEFT_ON = 64,
+  SHIFT_RIGHT_ON = 128,
+  SYM_ON = 4,
+  FUNCTION_ON = 8,
+  CTRL_ON = 4096,
+  CTRL_LEFT_ON = 8192,
+  CTRL_RIGHT_ON = 16384,
+  META_ON = 65536,
+  META_LEFT_ON = 131072,
+  META_RIGHT_ON = 262144,
+  CAPS_LOCK_ON = 1048576,
+  NUM_LOCK_ON = 2097152,
+  SCROLL_LOCK_ON = 4194304,
+}
diff --git a/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/MotionEvent.aidl b/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/MotionEvent.aidl
new file mode 100644
index 0000000..84af4bf
--- /dev/null
+++ b/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/MotionEvent.aidl
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.input.common;
+@VintfStability
+parcelable MotionEvent {
+  int deviceId;
+  android.hardware.input.common.Source source;
+  int displayId;
+  long downTime;
+  long eventTime;
+  android.hardware.input.common.Action action;
+  byte actionIndex;
+  android.hardware.input.common.Button actionButton;
+  android.hardware.input.common.Flag flags;
+  android.hardware.input.common.PolicyFlag policyFlags;
+  android.hardware.input.common.EdgeFlag edgeFlags;
+  android.hardware.input.common.Meta metaState;
+  android.hardware.input.common.Button buttonState;
+  float xPrecision;
+  float yPrecision;
+  android.hardware.input.common.PointerProperties[] pointerProperties;
+  android.hardware.input.common.PointerCoords[] pointerCoords;
+  int deviceTimestamp;
+  android.hardware.input.common.VideoFrame[] frames;
+}
diff --git a/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/PointerCoords.aidl b/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/PointerCoords.aidl
new file mode 100644
index 0000000..353a106
--- /dev/null
+++ b/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/PointerCoords.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.input.common;
+@VintfStability
+parcelable PointerCoords {
+  long bits;
+  float[] values;
+}
diff --git a/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/PointerProperties.aidl b/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/PointerProperties.aidl
new file mode 100644
index 0000000..a49581b
--- /dev/null
+++ b/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/PointerProperties.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.input.common;
+@VintfStability
+parcelable PointerProperties {
+  int id;
+  android.hardware.input.common.ToolType toolType;
+}
diff --git a/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/PolicyFlag.aidl b/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/PolicyFlag.aidl
new file mode 100644
index 0000000..247e868
--- /dev/null
+++ b/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/PolicyFlag.aidl
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.input.common;
+@Backing(type="int") @VintfStability
+enum PolicyFlag {
+  WAKE = 1,
+  VIRTUAL = 2,
+  FUNCTION = 4,
+  GESTURE = 8,
+  INJECTED = 16777216,
+  TRUSTED = 33554432,
+  FILTERED = 67108864,
+  DISABLE_KEY_REPEAT = 134217728,
+  INTERACTIVE = 536870912,
+  PASS_TO_USER = 1073741824,
+}
diff --git a/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/Source.aidl b/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/Source.aidl
new file mode 100644
index 0000000..24d02cd
--- /dev/null
+++ b/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/Source.aidl
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.input.common;
+@Backing(type="int") @VintfStability
+enum Source {
+  UNKNOWN = 0,
+  KEYBOARD = 257,
+  DPAD = 513,
+  GAMEPAD = 1025,
+  TOUCHSCREEN = 4098,
+  MOUSE = 8194,
+  STYLUS = 16386,
+  BLUETOOTH_STYLUS = 49154,
+  TRACKBALL = 65540,
+  MOUSE_RELATIVE = 131076,
+  TOUCHPAD = 1048584,
+  TOUCH_NAVIGATION = 2097152,
+  ROTARY_ENCODER = 4194304,
+  JOYSTICK = 16777232,
+  SENSOR = 67108864,
+  ANY = -256,
+}
diff --git a/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/SourceClass.aidl b/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/SourceClass.aidl
new file mode 100644
index 0000000..96eede2
--- /dev/null
+++ b/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/SourceClass.aidl
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.input.common;
+@Backing(type="byte") @VintfStability
+enum SourceClass {
+  NONE = 0,
+  BUTTON = 1,
+  POINTER = 2,
+  NAVIGATION = 4,
+  POSITION = 8,
+  JOYSTICK = 16,
+}
diff --git a/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/ToolType.aidl b/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/ToolType.aidl
new file mode 100644
index 0000000..ac1b69d
--- /dev/null
+++ b/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/ToolType.aidl
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.input.common;
+@Backing(type="byte") @VintfStability
+enum ToolType {
+  UNKNOWN = 0,
+  FINGER = 1,
+  STYLUS = 2,
+  MOUSE = 3,
+  ERASER = 4,
+}
diff --git a/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/VideoFrame.aidl b/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/VideoFrame.aidl
new file mode 100644
index 0000000..14985c5
--- /dev/null
+++ b/input/common/aidl/aidl_api/android.hardware.input.common/current/android/hardware/input/common/VideoFrame.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.input.common;
+@VintfStability
+parcelable VideoFrame {
+  char[] data;
+  int height;
+  int width;
+  long timestamp;
+}
diff --git a/input/common/aidl/android/hardware/input/common/Action.aidl b/input/common/aidl/android/hardware/input/common/Action.aidl
new file mode 100644
index 0000000..ebe5e67
--- /dev/null
+++ b/input/common/aidl/android/hardware/input/common/Action.aidl
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.input.common;
+
+/**
+ * Motion event actions
+ */
+@VintfStability
+@Backing(type="int")
+enum Action {
+    /**
+     * A pressed gesture has started, the motion contains the initial starting location.
+     */
+    DOWN = 0,
+    /**
+     * A pressed gesture has finished, the motion contains the final release location
+     * as well as any intermediate points since the last down or move event.
+     */
+    UP = 1,
+    /**
+     * A change has happened during a press gesture (between AMOTION_EVENT_ACTION_DOWN and
+     * AMOTION_EVENT_ACTION_UP). The motion contains the most recent point.
+     */
+    MOVE = 2,
+    /**
+     * The current gesture has been aborted.
+     * You will not receive any more points in it. You must treat this as
+     * an up event, but not perform any action that you normally would.
+     */
+    CANCEL = 3,
+    /**
+     * A movement has happened outside of the normal bounds of the UI element.
+     * This does not provide a full gesture, but only the initial location of the movement/touch.
+     */
+    OUTSIDE = 4,
+    /**
+     * A non-primary pointer has gone down.
+     */
+    POINTER_DOWN = 5,
+    /**
+     * A non-primary pointer has gone up.
+     */
+    POINTER_UP = 6,
+    /**
+     * A change happened but the pointer is not down (unlike AMOTION_EVENT_ACTION_MOVE).
+     * The motion contains the most recent point, as well as any intermediate points since
+     * the last hover move event.
+     */
+    HOVER_MOVE = 7,
+    /**
+     * The motion event contains relative vertical and/or horizontal scroll offsets.
+     * Use getAxisValue to retrieve the information from AMOTION_EVENT_AXIS_VSCROLL
+     * and AMOTION_EVENT_AXIS_HSCROLL.
+     * The pointer may or may not be down when this event is dispatched.
+     * The framework will always deliver this action to the window under the pointer, which
+     * may not be the window currently touched.
+     */
+    SCROLL = 8,
+    /**
+     * The pointer is not down but has entered the boundaries of a window or view.
+     */
+    HOVER_ENTER = 9,
+    /**
+     * The pointer is not down but has exited the boundaries of a window or view.
+     */
+    HOVER_EXIT = 10,
+    /**
+     * One or more buttons have been pressed.
+     */
+    BUTTON_PRESS = 11,
+    /**
+     * One or more buttons have been released.
+     */
+    BUTTON_RELEASE = 12,
+}
diff --git a/input/common/aidl/android/hardware/input/common/Axis.aidl b/input/common/aidl/android/hardware/input/common/Axis.aidl
new file mode 100644
index 0000000..1150949
--- /dev/null
+++ b/input/common/aidl/android/hardware/input/common/Axis.aidl
@@ -0,0 +1,387 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.input.common;
+
+/**
+ * Constants that identify each individual axis of a motion event.
+ * Each value represents a bit position. The user is expected to manually shift
+ * to the desired position (e.g., 1 << Axis.X) when reading or writing these
+ * from a bitfield manually.
+ */
+@VintfStability
+@Backing(type="int")
+enum Axis {
+    /**
+     * Axis constant: X axis of a motion event.
+     *
+     * - For a touch screen, reports the absolute X screen position of the center of
+     * the touch contact area.  The units are display pixels.
+     * - For a touch pad, reports the absolute X surface position of the center of the touch
+     * contact area. The units are device-dependent.
+     * - For a mouse, reports the absolute X screen position of the mouse pointer.
+     * The units are display pixels.
+     * - For a trackball, reports the relative horizontal displacement of the trackball.
+     * The value is normalized to a range from -1.0 (left) to 1.0 (right).
+     * - For a joystick, reports the absolute X position of the joystick.
+     * The value is normalized to a range from -1.0 (left) to 1.0 (right).
+     */
+    X = 0,
+    /**
+     * Axis constant: Y axis of a motion event.
+     *
+     * - For a touch screen, reports the absolute Y screen position of the center of
+     * the touch contact area.  The units are display pixels.
+     * - For a touch pad, reports the absolute Y surface position of the center of the touch
+     * contact area. The units are device-dependent.
+     * - For a mouse, reports the absolute Y screen position of the mouse pointer.
+     * The units are display pixels.
+     * - For a trackball, reports the relative vertical displacement of the trackball.
+     * The value is normalized to a range from -1.0 (up) to 1.0 (down).
+     * - For a joystick, reports the absolute Y position of the joystick.
+     * The value is normalized to a range from -1.0 (up or far) to 1.0 (down or near).
+     */
+    Y = 1,
+    /**
+     * Axis constant: Pressure axis of a motion event.
+     *
+     * - For a touch screen or touch pad, reports the approximate pressure applied to the surface
+     * by a finger or other tool.  The value is normalized to a range from
+     * 0 (no pressure at all) to 1 (normal pressure), although values higher than 1
+     * may be generated depending on the calibration of the input device.
+     * - For a trackball, the value is set to 1 if the trackball button is pressed
+     * or 0 otherwise.
+     * - For a mouse, the value is set to 1 if the primary mouse button is pressed
+     * or 0 otherwise.
+     */
+    PRESSURE = 2,
+    /**
+     * Axis constant: Size axis of a motion event.
+     *
+     * - For a touch screen or touch pad, reports the approximate size of the contact area in
+     * relation to the maximum detectable size for the device.  The value is normalized
+     * to a range from 0 (smallest detectable size) to 1 (largest detectable size),
+     * although it is not a linear scale. This value is of limited use.
+     * To obtain calibrated size information, see
+     * {@link TOUCH_MAJOR} or {@link TOOL_MAJOR}.
+     */
+    SIZE = 3,
+    /**
+     * Axis constant: TouchMajor axis of a motion event.
+     *
+     * - For a touch screen, reports the length of the major axis of an ellipse that
+     * represents the touch area at the point of contact.
+     * The units are display pixels.
+     * - For a touch pad, reports the length of the major axis of an ellipse that
+     * represents the touch area at the point of contact.
+     * The units are device-dependent.
+     */
+    TOUCH_MAJOR = 4,
+    /**
+     * Axis constant: TouchMinor axis of a motion event.
+     *
+     * - For a touch screen, reports the length of the minor axis of an ellipse that
+     * represents the touch area at the point of contact.
+     * The units are display pixels.
+     * - For a touch pad, reports the length of the minor axis of an ellipse that
+     * represents the touch area at the point of contact.
+     * The units are device-dependent.
+     *
+     * When the touch is circular, the major and minor axis lengths will be equal to one another.
+     */
+    TOUCH_MINOR = 5,
+    /**
+     * Axis constant: ToolMajor axis of a motion event.
+     *
+     * - For a touch screen, reports the length of the major axis of an ellipse that
+     * represents the size of the approaching finger or tool used to make contact.
+     * - For a touch pad, reports the length of the major axis of an ellipse that
+     * represents the size of the approaching finger or tool used to make contact.
+     * The units are device-dependent.
+     *
+     * When the touch is circular, the major and minor axis lengths will be equal to one another.
+     *
+     * The tool size may be larger than the touch size since the tool may not be fully
+     * in contact with the touch sensor.
+     */
+    TOOL_MAJOR = 6,
+    /**
+     * Axis constant: ToolMinor axis of a motion event.
+     *
+     * - For a touch screen, reports the length of the minor axis of an ellipse that
+     * represents the size of the approaching finger or tool used to make contact.
+     * - For a touch pad, reports the length of the minor axis of an ellipse that
+     * represents the size of the approaching finger or tool used to make contact.
+     * The units are device-dependent.
+     *
+     * When the touch is circular, the major and minor axis lengths will be equal to one another.
+     *
+     * The tool size may be larger than the touch size since the tool may not be fully
+     * in contact with the touch sensor.
+     */
+    TOOL_MINOR = 7,
+    /**
+     * Axis constant: Orientation axis of a motion event.
+     *
+     * - For a touch screen or touch pad, reports the orientation of the finger
+     * or tool in radians relative to the vertical plane of the device.
+     * An angle of 0 radians indicates that the major axis of contact is oriented
+     * upwards, is perfectly circular or is of unknown orientation.  A positive angle
+     * indicates that the major axis of contact is oriented to the right.  A negative angle
+     * indicates that the major axis of contact is oriented to the left.
+     * The full range is from -PI/2 radians (finger pointing fully left) to PI/2 radians
+     * (finger pointing fully right).
+     * - For a stylus, the orientation indicates the direction in which the stylus
+     * is pointing in relation to the vertical axis of the current orientation of the screen.
+     * The range is from -PI radians to PI radians, where 0 is pointing up,
+     * -PI/2 radians is pointing left, -PI or PI radians is pointing down, and PI/2 radians
+     * is pointing right.  See also {@link TILT}.
+     */
+    ORIENTATION = 8,
+    /**
+     * Axis constant: Vertical Scroll axis of a motion event.
+     *
+     * - For a mouse, reports the relative movement of the vertical scroll wheel.
+     * The value is normalized to a range from -1.0 (down) to 1.0 (up).
+     *
+     * The framework may use this axis to scroll views vertically.
+     */
+    VSCROLL = 9,
+    /**
+     * Axis constant: Horizontal Scroll axis of a motion event.
+     *
+     * - For a mouse, reports the relative movement of the horizontal scroll wheel.
+     * The value is normalized to a range from -1.0 (left) to 1.0 (right).
+     *
+     * The framework may use this axis to scroll views horizontally.
+     */
+    HSCROLL = 10,
+    /**
+     * Axis constant: Z axis of a motion event.
+     *
+     * - For a joystick, reports the absolute Z position of the joystick.
+     * The value is normalized to a range from -1.0 (high) to 1.0 (low).
+     * <em>On game pads with two analog joysticks, this axis is often reinterpreted
+     * to report the absolute X position of the second joystick instead.</em>
+     */
+    Z = 11,
+    /**
+     * Axis constant: X Rotation axis of a motion event.
+     *
+     * - For a joystick, reports the absolute rotation angle about the X axis.
+     * The value is normalized to a range from -1.0 (counter-clockwise) to 1.0 (clockwise).
+     */
+    RX = 12,
+    /**
+     * Axis constant: Y Rotation axis of a motion event.
+     *
+     * - For a joystick, reports the absolute rotation angle about the Y axis.
+     * The value is normalized to a range from -1.0 (counter-clockwise) to 1.0 (clockwise).
+     */
+    RY = 13,
+    /**
+     * Axis constant: Z Rotation axis of a motion event.
+     *
+     * - For a joystick, reports the absolute rotation angle about the Z axis.
+     * The value is normalized to a range from -1.0 (counter-clockwise) to 1.0 (clockwise).
+     * On game pads with two analog joysticks, this axis is often reinterpreted
+     * to report the absolute Y position of the second joystick instead.
+     */
+    RZ = 14,
+    /**
+     * Axis constant: Hat X axis of a motion event.
+     *
+     * - For a joystick, reports the absolute X position of the directional hat control.
+     * The value is normalized to a range from -1.0 (left) to 1.0 (right).
+     */
+    HAT_X = 15,
+    /**
+     * Axis constant: Hat Y axis of a motion event.
+     *
+     * - For a joystick, reports the absolute Y position of the directional hat control.
+     * The value is normalized to a range from -1.0 (up) to 1.0 (down).
+     */
+    HAT_Y = 16,
+    /**
+     * Axis constant: Left Trigger axis of a motion event.
+     *
+     * - For a joystick, reports the absolute position of the left trigger control.
+     * The value is normalized to a range from 0.0 (released) to 1.0 (fully pressed).
+     */
+    LTRIGGER = 17,
+    /**
+     * Axis constant: Right Trigger axis of a motion event.
+     *
+     * - For a joystick, reports the absolute position of the right trigger control.
+     * The value is normalized to a range from 0.0 (released) to 1.0 (fully pressed).
+     */
+    RTRIGGER = 18,
+    /**
+     * Axis constant: Throttle axis of a motion event.
+     *
+     * - For a joystick, reports the absolute position of the throttle control.
+     * The value is normalized to a range from 0.0 (fully open) to 1.0 (fully closed).
+     */
+    THROTTLE = 19,
+    /**
+     * Axis constant: Rudder axis of a motion event.
+     *
+     * - For a joystick, reports the absolute position of the rudder control.
+     * The value is normalized to a range from -1.0 (turn left) to 1.0 (turn right).
+     */
+    RUDDER = 20,
+    /**
+     * Axis constant: Wheel axis of a motion event.
+     *
+     * - For a joystick, reports the absolute position of the steering wheel control.
+     * The value is normalized to a range from -1.0 (turn left) to 1.0 (turn right).
+     */
+    WHEEL = 21,
+    /**
+     * Axis constant: Gas axis of a motion event.
+     *
+     * - For a joystick, reports the absolute position of the gas (accelerator) control.
+     * The value is normalized to a range from 0.0 (no acceleration)
+     * to 1.0 (maximum acceleration).
+     */
+    GAS = 22,
+    /**
+     * Axis constant: Brake axis of a motion event.
+     *
+     * - For a joystick, reports the absolute position of the brake control.
+     * The value is normalized to a range from 0.0 (no braking) to 1.0 (maximum braking).
+     */
+    BRAKE = 23,
+    /**
+     * Axis constant: Distance axis of a motion event.
+     *
+     * - For a stylus, reports the distance of the stylus from the screen.
+     * A value of 0.0 indicates direct contact and larger values indicate increasing
+     * distance from the surface.
+     */
+    DISTANCE = 24,
+    /**
+     * Axis constant: Tilt axis of a motion event.
+     *
+     * - For a stylus, reports the tilt angle of the stylus in radians where
+     * 0 radians indicates that the stylus is being held perpendicular to the
+     * surface, and PI/2 radians indicates that the stylus is being held flat
+     * against the surface.
+     */
+    TILT = 25,
+    /**
+     * Axis constant:  Generic scroll axis of a motion event.
+     *
+     * - This is used for scroll axis motion events that can't be classified as strictly
+     *   vertical or horizontal. The movement of a rotating scroller is an example of this.
+     */
+    SCROLL = 26,
+    /**
+     * Axis constant: The movement of x position of a motion event.
+     *
+     * - For a mouse, reports a difference of x position between the previous position.
+     * This is useful when pointer is captured, in that case the mouse pointer doesn't
+     * change the location but this axis reports the difference which allows the app
+     * to see how the mouse is moved.
+     */
+    RELATIVE_X = 27,
+    /**
+     * Axis constant: The movement of y position of a motion event.
+     *
+     * Same as {@link RELATIVE_X}, but for y position.
+     */
+    RELATIVE_Y = 28,
+    /**
+     * Axis constant: Generic 1 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
+    GENERIC_1 = 32,
+    /**
+     * Axis constant: Generic 2 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
+    GENERIC_2 = 33,
+    /**
+     * Axis constant: Generic 3 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
+    GENERIC_3 = 34,
+    /**
+     * Axis constant: Generic 4 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
+    GENERIC_4 = 35,
+    /**
+     * Axis constant: Generic 5 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
+    GENERIC_5 = 36,
+    /**
+     * Axis constant: Generic 6 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
+    GENERIC_6 = 37,
+    /**
+     * Axis constant: Generic 7 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
+    GENERIC_7 = 38,
+    /**
+     * Axis constant: Generic 8 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
+    GENERIC_8 = 39,
+    /**
+     * Axis constant: Generic 9 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
+    GENERIC_9 = 40,
+    /**
+     * Axis constant: Generic 10 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
+    GENERIC_10 = 41,
+    /**
+     * Axis constant: Generic 11 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
+    GENERIC_11 = 42,
+    /**
+     * Axis constant: Generic 12 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
+    GENERIC_12 = 43,
+    /**
+     * Axis constant: Generic 13 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
+    GENERIC_13 = 44,
+    /**
+     * Axis constant: Generic 14 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
+    GENERIC_14 = 45,
+    /**
+     * Axis constant: Generic 15 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
+    GENERIC_15 = 46,
+    /**
+     * Axis constant: Generic 16 axis of a motion event.
+     * The interpretation of a generic axis is device-specific.
+     */
+    GENERIC_16 = 47,
+}
diff --git a/input/common/aidl/android/hardware/input/common/Button.aidl b/input/common/aidl/android/hardware/input/common/Button.aidl
new file mode 100644
index 0000000..4bbd5f5
--- /dev/null
+++ b/input/common/aidl/android/hardware/input/common/Button.aidl
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.input.common;
+
+/**
+ * Buttons that are associated with motion events.
+ */
+@VintfStability
+@Backing(type="int")
+enum Button {
+    NONE = 0,
+    PRIMARY = 1 << 0,
+    SECONDARY = 1 << 1,
+    TERTIARY = 1 << 2,
+    BACK = 1 << 3,
+    FORWARD = 1 << 4,
+    STYLUS_PRIMARY = 1 << 5,
+    STYLUS_SECONDARY = 1 << 6,
+}
diff --git a/input/common/aidl/android/hardware/input/common/Classification.aidl b/input/common/aidl/android/hardware/input/common/Classification.aidl
new file mode 100644
index 0000000..f573174
--- /dev/null
+++ b/input/common/aidl/android/hardware/input/common/Classification.aidl
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.input.common;
+
+/**
+ * Classification of the current gesture, if available.
+ */
+@VintfStability
+@Backing(type="byte")
+enum Classification {
+    NONE = 0,
+    /**
+     * Too early to classify the gesture, need more events.
+     */
+    AMBIGUOUS_GESTURE = 1,
+    /**
+     * User is force-pressing the screen.
+     */
+    DEEP_PRESS = 2,
+}
diff --git a/input/common/aidl/android/hardware/input/common/EdgeFlag.aidl b/input/common/aidl/android/hardware/input/common/EdgeFlag.aidl
new file mode 100644
index 0000000..8d22635
--- /dev/null
+++ b/input/common/aidl/android/hardware/input/common/EdgeFlag.aidl
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.input.common;
+
+/**
+ * Edge flags
+ */
+@VintfStability
+@Backing(type="int")
+enum EdgeFlag {
+    /**
+     * No edges are intersected
+     */
+    NONE = 0,
+    /**
+     * Motion intersected top edge of the screen
+     */
+    TOP = 1 << 0,
+    /**
+     * Motion intersected bottom edge of the screen
+     */
+    BOTTOM = 1 << 1,
+    /**
+     * Motion intersected left edge of the screen
+     */
+    LEFT = 1 << 2,
+    /**
+     * Motion intersected right edge of the screen
+     */
+    RIGHT = 1 << 3,
+}
diff --git a/input/common/aidl/android/hardware/input/common/Flag.aidl b/input/common/aidl/android/hardware/input/common/Flag.aidl
new file mode 100644
index 0000000..600bdd3
--- /dev/null
+++ b/input/common/aidl/android/hardware/input/common/Flag.aidl
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.input.common;
+
+/**
+ * Motion event flags
+ */
+@VintfStability
+@Backing(type="int")
+enum Flag {
+    /**
+     * Indicates that the window that received this motion event is partly
+     * or wholly obscured by another visible window above it. This flag is set to true
+     * even if the event did not directly pass through the obscured area.
+     * A security sensitive application can check this flag to identify situations in which
+     * a malicious application may have covered up part of its content for the purpose
+     * of misleading the user or hijacking touches. An appropriate response might be
+     * to drop the suspect touches or to take additional precautions to confirm the user's
+     * actual intent.
+     */
+    WINDOW_IS_OBSCURED = 1 << 0,
+    /**
+     * This flag indicates that the event has been generated by a gesture generator. It
+     * could be used, for example, to determine whether touch slop should be applied.
+     */
+    IS_GENERATED_GESTURE = 1 << 3,
+    /**
+     * Motion event is inconsistent with previously sent motion events.
+     */
+    TAINTED = 1 << 31,
+}
diff --git a/input/common/aidl/android/hardware/input/common/Meta.aidl b/input/common/aidl/android/hardware/input/common/Meta.aidl
new file mode 100644
index 0000000..9ccf11b
--- /dev/null
+++ b/input/common/aidl/android/hardware/input/common/Meta.aidl
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.input.common;
+
+/**
+ * Meta key / modifier state
+ */
+@VintfStability
+@Backing(type="int")
+enum Meta {
+    NONE = 0,
+    /**
+     * One of the ALT meta keys is pressed.
+     */
+    ALT_ON = 1 << 1,
+    /**
+     * The left ALT meta key is pressed.
+     */
+    ALT_LEFT_ON = 1 << 4,
+    /**
+     * The right ALT meta key is pressed.
+     */
+    ALT_RIGHT_ON = 1 << 5,
+    /**
+     * One of the SHIFT meta keys is pressed.
+     */
+    SHIFT_ON = 1 << 0,
+    /**
+     * The left SHIFT meta key is pressed.
+     */
+    SHIFT_LEFT_ON = 1 << 6,
+    /**
+     * The right SHIFT meta key is pressed.
+     */
+    SHIFT_RIGHT_ON = 1 << 7,
+    /**
+     * The SYM meta key is pressed.
+     */
+    SYM_ON = 1 << 2,
+    /**
+     * The FUNCTION meta key is pressed.
+     */
+    FUNCTION_ON = 1 << 3,
+    /**
+     * One of the CTRL meta keys is pressed.
+     */
+    CTRL_ON = 1 << 12,
+    /**
+     * The left CTRL meta key is pressed.
+     */
+    CTRL_LEFT_ON = 1 << 13,
+    /**
+     * The right CTRL meta key is pressed.
+     */
+    CTRL_RIGHT_ON = 1 << 14,
+    /**
+     * One of the META meta keys is pressed.
+     */
+    META_ON = 1 << 16,
+    /**
+     * The left META meta key is pressed.
+     */
+    META_LEFT_ON = 1 << 17,
+    /**
+     * The right META meta key is pressed.
+     */
+    META_RIGHT_ON = 1 << 18,
+    /**
+     * The CAPS LOCK meta key is on.
+     */
+    CAPS_LOCK_ON = 1 << 20,
+    /**
+     * The NUM LOCK meta key is on.
+     */
+    NUM_LOCK_ON = 1 << 21,
+    /**
+     * The SCROLL LOCK meta key is on.
+     */
+    SCROLL_LOCK_ON = 1 << 22,
+}
diff --git a/input/common/aidl/android/hardware/input/common/MotionEvent.aidl b/input/common/aidl/android/hardware/input/common/MotionEvent.aidl
new file mode 100644
index 0000000..dfea703
--- /dev/null
+++ b/input/common/aidl/android/hardware/input/common/MotionEvent.aidl
@@ -0,0 +1,114 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.input.common;
+
+import android.hardware.input.common.Action;
+import android.hardware.input.common.Button;
+import android.hardware.input.common.EdgeFlag;
+import android.hardware.input.common.Flag;
+import android.hardware.input.common.Meta;
+import android.hardware.input.common.PointerCoords;
+import android.hardware.input.common.PointerProperties;
+import android.hardware.input.common.PolicyFlag;
+import android.hardware.input.common.Source;
+import android.hardware.input.common.VideoFrame;
+
+/**
+ * Analogous to Android's native MotionEvent / NotifyMotionArgs.
+ * Stores the basic information about pointer movements.
+ */
+@VintfStability
+parcelable MotionEvent {
+    /**
+     * The id of the device which produced this event.
+     */
+    int deviceId;
+    /**
+     * The source type of this event.
+     */
+    Source source;
+    /**
+     * The display id associated with this event.
+     */
+    int displayId;
+    /**
+     * Time when the initial touch down occurred, in nanoseconds.
+     */
+    long downTime;
+    /**
+     * Time when this event occurred, in nanoseconds.
+     */
+    long eventTime;
+    /**
+     * The kind of action being performed.
+     */
+    Action action;
+    /**
+     * For ACTION_POINTER_DOWN or ACTION_POINTER_UP, this contains the associated pointer index.
+     * The index may be used to get information about the pointer that has gone down or up.
+     */
+    byte actionIndex;
+    /**
+     * The button that has been modified during a press or release action.
+     */
+    Button actionButton;
+    /**
+     * The motion event flags.
+     */
+    Flag flags;
+    /**
+     * The motion event policy flags.
+     */
+    PolicyFlag policyFlags;
+    /**
+     * The edges, if any, that were touched by this motion event.
+     */
+    EdgeFlag edgeFlags;
+    /**
+     * The state of any meta / modifier keys that were in effect when the event was generated.
+     */
+    Meta metaState;
+    /**
+     * The state of buttons that are pressed.
+     */
+    Button buttonState;
+    /**
+     * The precision of the X coordinate being reported.
+     */
+    float xPrecision;
+    /**
+     * The precision of the Y coordinate being reported.
+     */
+    float yPrecision;
+    /**
+     * The properties of each pointer present in this motion event.
+     */
+    PointerProperties[] pointerProperties;
+    /**
+     * The coordinates of each pointer.
+     */
+    PointerCoords[] pointerCoords;
+    /**
+     * Device time at which the event occurred, in microseconds.
+     * Will wrap after a little over an hour.
+     */
+    int deviceTimestamp;
+    /**
+     * The video frames, if any, associated with the current or previous motion events.
+     */
+    VideoFrame[] frames;
+}
diff --git a/input/common/aidl/android/hardware/input/common/PointerCoords.aidl b/input/common/aidl/android/hardware/input/common/PointerCoords.aidl
new file mode 100644
index 0000000..56d9a74
--- /dev/null
+++ b/input/common/aidl/android/hardware/input/common/PointerCoords.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.input.common;
+
+import android.hardware.input.common.Axis;
+
+/**
+ * Pointer coordinate data. Analogous to Android's PointerCoords.
+ */
+@VintfStability
+parcelable PointerCoords {
+    /**
+     * Bitfield of axes that are present in this structure.
+     * Each bit position matches an axis defined in Axis.aidl.
+     */
+    long bits;
+    /**
+     * The values corresponding to each non-zero axis. This vector only
+     * contains non-zero entries. If an axis that is not currently specified
+     * in "bits" is requested, a zero value is returned.
+     * There are only as many values stored here
+     * as there are non-zero bits in the "bits" field.
+     * The values are position-packed. So the first non-zero axis will be
+     * at position 0, the next non-zero axis will be at position 1, and so on.
+     */
+    float[] values;
+}
diff --git a/input/common/aidl/android/hardware/input/common/PointerProperties.aidl b/input/common/aidl/android/hardware/input/common/PointerProperties.aidl
new file mode 100644
index 0000000..38d815e
--- /dev/null
+++ b/input/common/aidl/android/hardware/input/common/PointerProperties.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.input.common;
+
+import android.hardware.input.common.ToolType;
+
+/**
+ * Properties of a particular pointer. Analogous to Android's PointerProperties.
+ */
+@VintfStability
+parcelable PointerProperties {
+    /**
+     * A number identifying a specific pointer. When a pointer is lifted,
+     * this value may be reused by another new pointer, even during the
+     * same gesture. For example, if there are two pointers touching the screen
+     * at the same time, they might have pointer ID's of 0 and 1. If the
+     * pointer with id = 0 is lifted, while the pointer with id = 1 remains, and
+     * a new pointer is placed on the screen, then the new pointer may receive
+     * an id of 0. While a pointer is active, it is guaranteed to keep the same
+     * id.
+     */
+    int id;
+    /**
+     * Type of tool used to make contact, such as a finger or stylus, if known.
+     */
+    ToolType toolType;
+}
diff --git a/input/common/aidl/android/hardware/input/common/PolicyFlag.aidl b/input/common/aidl/android/hardware/input/common/PolicyFlag.aidl
new file mode 100644
index 0000000..c5edd0d
--- /dev/null
+++ b/input/common/aidl/android/hardware/input/common/PolicyFlag.aidl
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.input.common;
+
+/**
+ * Policy flags.
+ * The values 1 << 4 through 1 << 23 are not currently used.
+ * When a new value is added, make sure it matches a value defined in Input.h
+ * and other relevant files in frameworks/base and frameworks/native.
+ */
+@VintfStability
+@Backing(type="int")
+enum PolicyFlag {
+    /**
+     * Event should wake the device
+     */
+    WAKE = 1 << 0,
+    /**
+     * Key is virtual, and should generate haptic feedback
+     */
+    VIRTUAL = 1 << 1,
+    /**
+     * Key is the special function modifier
+     */
+    FUNCTION = 1 << 2,
+    /**
+     * Key represents a special gesture that has been detected
+     * by the touch firmware or driver.
+     */
+    GESTURE = 1 << 3,
+    /**
+     * Event was injected
+     */
+    INJECTED = 1 << 24,
+    /**
+     * Event comes from a trusted source, such as a directly attached input
+     * device or an application with system-wide event injection permission.
+     */
+    TRUSTED = 1 << 25,
+    /**
+     * Event has passed through an input filter.
+     */
+    FILTERED = 1 << 26,
+    /**
+     * Disable automatic key repeating behaviour.
+     */
+    DISABLE_KEY_REPEAT = 1 << 27,
+    /**
+     * Device was in an interactive state when the event was intercepted
+     */
+    INTERACTIVE = 1 << 29,
+    /**
+     * Event should be dispatched to applications
+     */
+    PASS_TO_USER = 1 << 30,
+}
diff --git a/input/common/aidl/android/hardware/input/common/Source.aidl b/input/common/aidl/android/hardware/input/common/Source.aidl
new file mode 100644
index 0000000..7eb6d66
--- /dev/null
+++ b/input/common/aidl/android/hardware/input/common/Source.aidl
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.input.common;
+
+import android.hardware.input.common.SourceClass;
+
+/**
+ * Input sources
+ */
+@VintfStability
+@Backing(type="int")
+enum Source {
+    UNKNOWN = 0,
+    KEYBOARD = (1 << 8) | SourceClass.BUTTON,
+    DPAD = (1 << 9) | SourceClass.BUTTON,
+    GAMEPAD = (1 << 10) | SourceClass.BUTTON,
+    TOUCHSCREEN = (1 << 12) | SourceClass.POINTER,
+    MOUSE = (1 << 13) | SourceClass.POINTER,
+    STYLUS = (1 << 14) | SourceClass.POINTER,
+    BLUETOOTH_STYLUS = (1 << 15) | STYLUS,
+    TRACKBALL = (1 << 16) | SourceClass.NAVIGATION,
+    MOUSE_RELATIVE = (1 << 17) | SourceClass.NAVIGATION,
+    TOUCHPAD = (1 << 20) | SourceClass.POSITION,
+    TOUCH_NAVIGATION = (1 << 21) | SourceClass.NONE,
+    ROTARY_ENCODER = (1 << 22) | SourceClass.NONE,
+    JOYSTICK = (1 << 24) | SourceClass.JOYSTICK,
+    SENSOR = (1 << 26) | SourceClass.NONE,
+    ANY = 0xFFFFFF00,
+}
diff --git a/input/common/aidl/android/hardware/input/common/SourceClass.aidl b/input/common/aidl/android/hardware/input/common/SourceClass.aidl
new file mode 100644
index 0000000..4315798
--- /dev/null
+++ b/input/common/aidl/android/hardware/input/common/SourceClass.aidl
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.input.common;
+
+@VintfStability
+@Backing(type="byte")
+enum SourceClass {
+    NONE = 0 << 0,
+    BUTTON = 1 << 0,
+    POINTER = 1 << 1,
+    NAVIGATION = 1 << 2,
+    POSITION = 1 << 3,
+    JOYSTICK = 1 << 4,
+}
diff --git a/input/common/aidl/android/hardware/input/common/ToolType.aidl b/input/common/aidl/android/hardware/input/common/ToolType.aidl
new file mode 100644
index 0000000..cfa057d
--- /dev/null
+++ b/input/common/aidl/android/hardware/input/common/ToolType.aidl
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.input.common;
+
+/**
+ * Tool type of a pointer
+ */
+@VintfStability
+@Backing(type="byte")
+enum ToolType {
+    UNKNOWN = 0,
+    FINGER = 1,
+    STYLUS = 2,
+    MOUSE = 3,
+    ERASER = 4,
+}
diff --git a/input/common/aidl/android/hardware/input/common/VideoFrame.aidl b/input/common/aidl/android/hardware/input/common/VideoFrame.aidl
new file mode 100644
index 0000000..409cee5
--- /dev/null
+++ b/input/common/aidl/android/hardware/input/common/VideoFrame.aidl
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.input.common;
+
+/**
+ * Touch heatmap.
+ *
+ * The array is a 2-D row-major matrix with dimensions (height, width).
+ * The heatmap data is rotated when device orientation changes.
+ *
+ * Example:
+ *
+ * If the data in the array is:
+ * data[i] = i for i in 0 .. 59,
+ * then it can be represented as a 10 x 6 matrix:
+ *
+ *  <--   width   -->
+ *   0  1  2  3  4  5   ^
+ *   6  7  8  9 10 11   |
+ *  12 13 14 15 16 17   |
+ *  18    ...      23   |
+ *  24    ...      29   | height
+ *  30    ...      35   |
+ *  36    ...      41   |
+ *  42    ...      47   |
+ *  48    ...      53   |
+ *  54    ...      59   v
+ *
+ * Looking at the device in standard portrait orientation,
+ * the element "0" is the top left of the screen,
+ * "5" is at the top right, and "59" is the bottom right.
+ * Here height=10 and width=6.
+ *
+ * If the screen orientation changes to landscape (a 90 degree orientation
+ * change), the frame's dimensions will become 6 x 10
+ * and the data will look as follows:
+ * 54 48 42 36 30 24 18 12  6  0     ^
+ * ...                  13  7  1     |
+ * ...                  14  8  2     | height
+ * ...                  15  9  3     |
+ * ...                  16 10  4     |
+ * 59 53 47 41 35 29 23 17 11  5     v
+ * <--        width          -->
+ *
+ * Here the element "0" is at the physical top left of the unrotated screen.
+ *
+ * Since the coordinates of a MotionEvent are also adjusted based on the
+ * orientation, the rotation of the video frame data ensures that
+ * the axes for MotionEvent and VideoFrame data are consistent.
+ */
+@VintfStability
+parcelable VideoFrame {
+    /**
+     * Video frame data.
+     * Size of the data is height * width.
+     */
+    char[] data;
+    int height;
+    int width;
+    /**
+     * Time at which the frame was collected, in nanoseconds.
+     * Measured with the same clock that is used to populate MotionEvent times.
+     */
+    long timestamp;
+}
diff --git a/ir/OWNERS b/ir/OWNERS
new file mode 100644
index 0000000..04de9ef
--- /dev/null
+++ b/ir/OWNERS
@@ -0,0 +1,2 @@
+# Bug component: 163905
+connoro@google.com
diff --git a/ir/aidl/Android.bp b/ir/aidl/Android.bp
new file mode 100644
index 0000000..5dbf68f
--- /dev/null
+++ b/ir/aidl/Android.bp
@@ -0,0 +1,42 @@
+// Copyright (C) 2021 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "hardware_interfaces_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["hardware_interfaces_license"],
+}
+
+aidl_interface {
+    name: "android.hardware.ir",
+    vendor_available: true,
+    srcs: ["android/hardware/ir/*.aidl"],
+    stability: "vintf",
+    backend: {
+        cpp: {
+            enabled: false,
+        },
+        java: {
+            sdk_version: "module_current",
+        },
+        ndk: {
+            vndk: {
+                enabled: true,
+            },
+        },
+    },
+}
diff --git a/ir/aidl/aidl_api/android.hardware.ir/current/android/hardware/ir/ConsumerIrFreqRange.aidl b/ir/aidl/aidl_api/android.hardware.ir/current/android/hardware/ir/ConsumerIrFreqRange.aidl
new file mode 100644
index 0000000..4a0d286
--- /dev/null
+++ b/ir/aidl/aidl_api/android.hardware.ir/current/android/hardware/ir/ConsumerIrFreqRange.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.ir;
+@VintfStability
+parcelable ConsumerIrFreqRange {
+  int minHz;
+  int maxHz;
+}
diff --git a/ir/aidl/aidl_api/android.hardware.ir/current/android/hardware/ir/IConsumerIr.aidl b/ir/aidl/aidl_api/android.hardware.ir/current/android/hardware/ir/IConsumerIr.aidl
new file mode 100644
index 0000000..07bf4b4
--- /dev/null
+++ b/ir/aidl/aidl_api/android.hardware.ir/current/android/hardware/ir/IConsumerIr.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.ir;
+@VintfStability
+interface IConsumerIr {
+  android.hardware.ir.ConsumerIrFreqRange[] getCarrierFreqs();
+  void transmit(in int carrierFreqHz, in int[] pattern);
+}
diff --git a/ir/aidl/android/hardware/ir/ConsumerIrFreqRange.aidl b/ir/aidl/android/hardware/ir/ConsumerIrFreqRange.aidl
new file mode 100644
index 0000000..ab0276a
--- /dev/null
+++ b/ir/aidl/android/hardware/ir/ConsumerIrFreqRange.aidl
@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.ir;
+
+@VintfStability
+parcelable ConsumerIrFreqRange {
+    int minHz;
+    int maxHz;
+}
diff --git a/ir/aidl/android/hardware/ir/IConsumerIr.aidl b/ir/aidl/android/hardware/ir/IConsumerIr.aidl
new file mode 100644
index 0000000..f6f9742
--- /dev/null
+++ b/ir/aidl/android/hardware/ir/IConsumerIr.aidl
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.ir;
+
+import android.hardware.ir.ConsumerIrFreqRange;
+
+@VintfStability
+interface IConsumerIr {
+    /**
+     * Enumerates which frequencies the IR transmitter supports.
+     *
+     * @return - an array of all supported frequency ranges.
+     */
+    ConsumerIrFreqRange[] getCarrierFreqs();
+
+    /**
+     * Sends an IR pattern at a given frequency in HZ.
+     * This call must return when the transmit is complete or encounters an error.
+     *
+     * @param carrierFreq - Frequency of the transmission in HZ.
+     *
+     * @param pattern - Alternating series of on and off periods measured in
+     * microseconds. The carrier should be turned off at the end of a transmit
+     * even if there are an odd number of entries in the pattern array.
+     *
+     * @throws EX_UNSUPPORTED_OPERATION when the frequency is not supported.
+     */
+    void transmit(in int carrierFreqHz, in int[] pattern);
+}
diff --git a/ir/aidl/default/Android.bp b/ir/aidl/default/Android.bp
new file mode 100644
index 0000000..a4fb439
--- /dev/null
+++ b/ir/aidl/default/Android.bp
@@ -0,0 +1,42 @@
+// Copyright (C) 2021 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Example binder service of the ir HAL.
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "hardware_interfaces_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["hardware_interfaces_license"],
+}
+
+cc_binary {
+    name: "android.hardware.ir-service.example",
+    relative_install_path: "hw",
+    init_rc: ["android.hardware.ir-service.example.rc"],
+    vendor: true,
+    vintf_fragments: ["android.hardware.ir-service.example.xml"],
+
+    shared_libs: [
+        "libbase",
+        "libbinder_ndk",
+        "libcutils",
+        "liblog",
+        "libutils",
+        "android.hardware.ir-V1-ndk",
+    ],
+
+    srcs: ["main.cpp"],
+}
diff --git a/ir/aidl/default/android.hardware.ir-service.example.rc b/ir/aidl/default/android.hardware.ir-service.example.rc
new file mode 100644
index 0000000..56def64
--- /dev/null
+++ b/ir/aidl/default/android.hardware.ir-service.example.rc
@@ -0,0 +1,4 @@
+service vendor.ir-default /vendor/bin/hw/android.hardware.ir-service.example
+    class hal
+    user nobody
+    group nobody
diff --git a/ir/aidl/default/android.hardware.ir-service.example.xml b/ir/aidl/default/android.hardware.ir-service.example.xml
new file mode 100644
index 0000000..1a63520
--- /dev/null
+++ b/ir/aidl/default/android.hardware.ir-service.example.xml
@@ -0,0 +1,7 @@
+<manifest version="1.0" type="device">
+    <hal format="aidl">
+        <name>android.hardware.ir</name>
+        <version>1</version>
+        <fqname>IConsumerIr/default</fqname>
+    </hal>
+</manifest>
diff --git a/ir/aidl/default/main.cpp b/ir/aidl/default/main.cpp
new file mode 100644
index 0000000..7c4a816
--- /dev/null
+++ b/ir/aidl/default/main.cpp
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <aidl/android/hardware/ir/BnConsumerIr.h>
+#include <android-base/logging.h>
+#include <android/binder_interface_utils.h>
+#include <android/binder_manager.h>
+#include <android/binder_process.h>
+#include <numeric>
+
+namespace aidl::android::hardware::ir {
+
+const std::vector<ConsumerIrFreqRange> kSupportedFreqs = {
+        {2000, 4000},
+        {10000, 30000},
+};
+
+class ConsumerIr : public BnConsumerIr {
+    ::ndk::ScopedAStatus getCarrierFreqs(std::vector<ConsumerIrFreqRange>* _aidl_return) override;
+    ::ndk::ScopedAStatus transmit(int32_t in_carrierFreqHz,
+                                  const std::vector<int32_t>& in_pattern) override;
+};
+
+::ndk::ScopedAStatus ConsumerIr::getCarrierFreqs(std::vector<ConsumerIrFreqRange>* _aidl_return) {
+    *_aidl_return = kSupportedFreqs;
+    return ::ndk::ScopedAStatus::ok();
+}
+
+bool isSupportedFreq(int32_t freq) {
+    for (const auto& range : kSupportedFreqs) {
+        if (freq >= range.minHz && freq <= range.maxHz) return true;
+    }
+    return false;
+}
+
+::ndk::ScopedAStatus ConsumerIr::transmit(int32_t in_carrierFreqHz,
+                                          const std::vector<int32_t>& in_pattern) {
+    if (isSupportedFreq(in_carrierFreqHz)) {
+        // trasmit the pattern, each integer is number of microseconds in an
+        // alternating on/off state.
+        usleep(std::accumulate(in_pattern.begin(), in_pattern.end(), 0));
+        return ::ndk::ScopedAStatus::ok();
+    } else {
+        // unsupported operation
+        return ::ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+    }
+    return ::ndk::ScopedAStatus::ok();
+}
+
+}  // namespace aidl::android::hardware::ir
+
+using aidl::android::hardware::ir::ConsumerIr;
+
+int main() {
+    auto binder = ::ndk::SharedRefBase::make<ConsumerIr>();
+    const std::string name = std::string() + ConsumerIr::descriptor + "/default";
+    CHECK_EQ(STATUS_OK, AServiceManager_addService(binder->asBinder().get(), name.c_str()))
+            << "Failed to register " << name;
+
+    ABinderProcess_setThreadPoolMaxThreadCount(0);
+    ABinderProcess_joinThreadPool();
+
+    return EXIT_FAILURE;  // should not reached
+}
diff --git a/ir/aidl/vts/Android.bp b/ir/aidl/vts/Android.bp
new file mode 100644
index 0000000..c2491b8
--- /dev/null
+++ b/ir/aidl/vts/Android.bp
@@ -0,0 +1,43 @@
+//
+// Copyright (C) 2021 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "hardware_interfaces_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["hardware_interfaces_license"],
+}
+
+cc_test {
+    name: "VtsHalIrTargetTest",
+    defaults: [
+        "VtsHalTargetTestDefaults",
+        "use_libaidlvintf_gtest_helper_static",
+    ],
+    srcs: ["VtsHalIrTargetTest.cpp"],
+    shared_libs: [
+        "libbinder_ndk",
+    ],
+    static_libs: [
+        "android.hardware.ir-V1-ndk",
+    ],
+    test_suites: [
+        "general-tests",
+        "vts",
+    ],
+}
diff --git a/ir/aidl/vts/VtsHalIrTargetTest.cpp b/ir/aidl/vts/VtsHalIrTargetTest.cpp
new file mode 100644
index 0000000..3527625
--- /dev/null
+++ b/ir/aidl/vts/VtsHalIrTargetTest.cpp
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "ir_aidl_hal_test"
+
+#include <aidl/Gtest.h>
+#include <aidl/Vintf.h>
+#include <aidl/android/hardware/ir/IConsumerIr.h>
+#include <android-base/logging.h>
+#include <android/binder_auto_utils.h>
+#include <android/binder_manager.h>
+#include <gtest/gtest.h>
+#include <algorithm>
+#include <vector>
+
+using ::aidl::android::hardware::ir::ConsumerIrFreqRange;
+using ::aidl::android::hardware::ir::IConsumerIr;
+using ::ndk::SpAIBinder;
+
+class ConsumerIrTest : public ::testing::TestWithParam<std::string> {
+  public:
+    virtual void SetUp() override {
+        mIr = IConsumerIr::fromBinder(
+                SpAIBinder(AServiceManager_waitForService(GetParam().c_str())));
+        ASSERT_NE(mIr, nullptr);
+    }
+
+    std::shared_ptr<IConsumerIr> mIr;
+};
+
+// Test transmit() for the min and max frequency of every available range
+TEST_P(ConsumerIrTest, TransmitTest) {
+    std::vector<ConsumerIrFreqRange> ranges;
+    const auto& ret = mIr->getCarrierFreqs(&ranges);
+    ASSERT_TRUE(ret.isOk());
+
+    if (ranges.size() > 0) {
+        uint32_t len = 16;
+        std::vector<int32_t> vec;
+        vec.resize(len);
+        std::fill(vec.begin(), vec.end(), 1000);
+        for (auto range = ranges.begin(); range != ranges.end(); range++) {
+            EXPECT_TRUE(mIr->transmit(range->minHz, vec).isOk());
+            EXPECT_TRUE(mIr->transmit(range->maxHz, vec).isOk());
+        }
+    }
+}
+
+// Test transmit() when called with invalid frequencies
+TEST_P(ConsumerIrTest, BadFreqTest) {
+    uint32_t len = 16;
+    std::vector<int32_t> vec;
+    vec.resize(len);
+    std::fill(vec.begin(), vec.end(), 1);
+    const auto& res = mIr->transmit(-1, vec);
+    EXPECT_FALSE(res.isOk());
+    EXPECT_EQ(res.getExceptionCode(), EX_UNSUPPORTED_OPERATION);
+}
+
+GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(ConsumerIrTest);
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, ConsumerIrTest,
+        testing::ValuesIn(android::getAidlHalInstanceNames(IConsumerIr::descriptor)),
+        ::android::PrintInstanceNameToString);
diff --git a/keymaster/4.0/IKeymasterDevice.hal b/keymaster/4.0/IKeymasterDevice.hal
index dfde060..1c6ae47 100644
--- a/keymaster/4.0/IKeymasterDevice.hal
+++ b/keymaster/4.0/IKeymasterDevice.hal
@@ -1254,7 +1254,8 @@
      * o PaddingMode::RSA_PSS.  For PSS-padded signature operations, the PSS salt length must match
      *   the size of the PSS digest selected.  The digest specified with Tag::DIGEST in inputParams
      *   on begin() must be used as the PSS digest algorithm, MGF1 must be used as the mask
-     *   generation function and SHA1 must be used as the MGF1 digest algorithm.
+     *   generation function and the digest specified with Tag:DIGEST in inputParams must also be
+     *   used as the MGF1 digest algorithm.
      *
      * o PaddingMode::RSA_OAEP.  The digest specified with Tag::DIGEST in inputParams on begin is
      *   used as the OAEP digest algorithm, MGF1 must be used as the mask generation function and
diff --git a/keymaster/4.0/vts/functional/keymaster_hidl_hal_test.cpp b/keymaster/4.0/vts/functional/keymaster_hidl_hal_test.cpp
index 7676147..6412f3a 100644
--- a/keymaster/4.0/vts/functional/keymaster_hidl_hal_test.cpp
+++ b/keymaster/4.0/vts/functional/keymaster_hidl_hal_test.cpp
@@ -1712,6 +1712,7 @@
                     case PaddingMode::RSA_PSS:
                         EXPECT_GT(EVP_PKEY_CTX_set_rsa_padding(pkey_ctx, RSA_PKCS1_PSS_PADDING), 0);
                         EXPECT_GT(EVP_PKEY_CTX_set_rsa_pss_saltlen(pkey_ctx, EVP_MD_size(md)), 0);
+                        EXPECT_GT(EVP_PKEY_CTX_set_rsa_mgf1_md(pkey_ctx, md), 0);
                         break;
                     case PaddingMode::RSA_PKCS1_1_5_SIGN:
                         // PKCS1 is the default; don't need to set anything.
diff --git a/memtrack/OWNERS b/memtrack/OWNERS
new file mode 100644
index 0000000..a182ed9
--- /dev/null
+++ b/memtrack/OWNERS
@@ -0,0 +1,2 @@
+# Bug component: 30545
+connoro@google.com
diff --git a/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Burst.h b/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Burst.h
index 8bd2fbe..cef76c6 100644
--- a/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Burst.h
+++ b/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Burst.h
@@ -45,12 +45,15 @@
 
     nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> execute(
             const nn::Request& request, nn::MeasureTiming measure,
-            const nn::OptionalTimePoint& deadline,
-            const nn::OptionalDuration& loopTimeoutDuration) const override;
+            const nn::OptionalTimePoint& deadline, const nn::OptionalDuration& loopTimeoutDuration,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     nn::GeneralResult<nn::SharedExecution> createReusableExecution(
             const nn::Request& request, nn::MeasureTiming measure,
-            const nn::OptionalDuration& loopTimeoutDuration) const override;
+            const nn::OptionalDuration& loopTimeoutDuration,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
   private:
     const nn::SharedPreparedModel kPreparedModel;
diff --git a/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Device.h b/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Device.h
index 0a6ca3e..d7c43ef 100644
--- a/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Device.h
+++ b/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Device.h
@@ -65,8 +65,9 @@
     nn::GeneralResult<nn::SharedPreparedModel> prepareModel(
             const nn::Model& model, nn::ExecutionPreference preference, nn::Priority priority,
             nn::OptionalTimePoint deadline, const std::vector<nn::SharedHandle>& modelCache,
-            const std::vector<nn::SharedHandle>& dataCache,
-            const nn::CacheToken& token) const override;
+            const std::vector<nn::SharedHandle>& dataCache, const nn::CacheToken& token,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     nn::GeneralResult<nn::SharedPreparedModel> prepareModelFromCache(
             nn::OptionalTimePoint deadline, const std::vector<nn::SharedHandle>& modelCache,
diff --git a/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/PreparedModel.h b/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/PreparedModel.h
index bdb5b54..337c132 100644
--- a/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/PreparedModel.h
+++ b/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/PreparedModel.h
@@ -49,18 +49,23 @@
 
     nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> execute(
             const nn::Request& request, nn::MeasureTiming measure,
-            const nn::OptionalTimePoint& deadline,
-            const nn::OptionalDuration& loopTimeoutDuration) const override;
+            const nn::OptionalTimePoint& deadline, const nn::OptionalDuration& loopTimeoutDuration,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     nn::GeneralResult<std::pair<nn::SyncFence, nn::ExecuteFencedInfoCallback>> executeFenced(
             const nn::Request& request, const std::vector<nn::SyncFence>& waitFor,
             nn::MeasureTiming measure, const nn::OptionalTimePoint& deadline,
             const nn::OptionalDuration& loopTimeoutDuration,
-            const nn::OptionalDuration& timeoutDurationAfterFence) const override;
+            const nn::OptionalDuration& timeoutDurationAfterFence,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     nn::GeneralResult<nn::SharedExecution> createReusableExecution(
             const nn::Request& request, nn::MeasureTiming measure,
-            const nn::OptionalDuration& loopTimeoutDuration) const override;
+            const nn::OptionalDuration& loopTimeoutDuration,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     nn::GeneralResult<nn::SharedBurst> configureExecutionBurst() const override;
 
diff --git a/neuralnetworks/1.0/utils/src/Burst.cpp b/neuralnetworks/1.0/utils/src/Burst.cpp
index 1284721..3642bc6 100644
--- a/neuralnetworks/1.0/utils/src/Burst.cpp
+++ b/neuralnetworks/1.0/utils/src/Burst.cpp
@@ -50,15 +50,20 @@
 
 nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> Burst::execute(
         const nn::Request& request, nn::MeasureTiming measure,
-        const nn::OptionalTimePoint& deadline,
-        const nn::OptionalDuration& loopTimeoutDuration) const {
-    return kPreparedModel->execute(request, measure, deadline, loopTimeoutDuration);
+        const nn::OptionalTimePoint& deadline, const nn::OptionalDuration& loopTimeoutDuration,
+        const std::vector<nn::TokenValuePair>& hints,
+        const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const {
+    return kPreparedModel->execute(request, measure, deadline, loopTimeoutDuration, hints,
+                                   extensionNameToPrefix);
 }
 
 nn::GeneralResult<nn::SharedExecution> Burst::createReusableExecution(
         const nn::Request& request, nn::MeasureTiming measure,
-        const nn::OptionalDuration& loopTimeoutDuration) const {
-    return kPreparedModel->createReusableExecution(request, measure, loopTimeoutDuration);
+        const nn::OptionalDuration& loopTimeoutDuration,
+        const std::vector<nn::TokenValuePair>& hints,
+        const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const {
+    return kPreparedModel->createReusableExecution(request, measure, loopTimeoutDuration, hints,
+                                                   extensionNameToPrefix);
 }
 
 }  // namespace android::hardware::neuralnetworks::V1_0::utils
diff --git a/neuralnetworks/1.0/utils/src/Device.cpp b/neuralnetworks/1.0/utils/src/Device.cpp
index b0c236e..620d040 100644
--- a/neuralnetworks/1.0/utils/src/Device.cpp
+++ b/neuralnetworks/1.0/utils/src/Device.cpp
@@ -143,7 +143,9 @@
 nn::GeneralResult<nn::SharedPreparedModel> Device::prepareModel(
         const nn::Model& model, nn::ExecutionPreference /*preference*/, nn::Priority /*priority*/,
         nn::OptionalTimePoint /*deadline*/, const std::vector<nn::SharedHandle>& /*modelCache*/,
-        const std::vector<nn::SharedHandle>& /*dataCache*/, const nn::CacheToken& /*token*/) const {
+        const std::vector<nn::SharedHandle>& /*dataCache*/, const nn::CacheToken& /*token*/,
+        const std::vector<nn::TokenValuePair>& /*hints*/,
+        const std::vector<nn::ExtensionNameAndPrefix>& /*extensionNameToPrefix*/) const {
     // Ensure that model is ready for IPC.
     std::optional<nn::Model> maybeModelInShared;
     const nn::Model& modelInShared =
diff --git a/neuralnetworks/1.0/utils/src/PreparedModel.cpp b/neuralnetworks/1.0/utils/src/PreparedModel.cpp
index 00e7d22..b8055fc 100644
--- a/neuralnetworks/1.0/utils/src/PreparedModel.cpp
+++ b/neuralnetworks/1.0/utils/src/PreparedModel.cpp
@@ -59,7 +59,9 @@
 nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> PreparedModel::execute(
         const nn::Request& request, nn::MeasureTiming /*measure*/,
         const nn::OptionalTimePoint& /*deadline*/,
-        const nn::OptionalDuration& /*loopTimeoutDuration*/) const {
+        const nn::OptionalDuration& /*loopTimeoutDuration*/,
+        const std::vector<nn::TokenValuePair>& /*hints*/,
+        const std::vector<nn::ExtensionNameAndPrefix>& /*extensionNameToPrefix*/) const {
     // Ensure that request is ready for IPC.
     std::optional<nn::Request> maybeRequestInShared;
     hal::utils::RequestRelocation relocation;
@@ -94,19 +96,22 @@
 }
 
 nn::GeneralResult<std::pair<nn::SyncFence, nn::ExecuteFencedInfoCallback>>
-PreparedModel::executeFenced(const nn::Request& /*request*/,
-                             const std::vector<nn::SyncFence>& /*waitFor*/,
-                             nn::MeasureTiming /*measure*/,
-                             const nn::OptionalTimePoint& /*deadline*/,
-                             const nn::OptionalDuration& /*loopTimeoutDuration*/,
-                             const nn::OptionalDuration& /*timeoutDurationAfterFence*/) const {
+PreparedModel::executeFenced(
+        const nn::Request& /*request*/, const std::vector<nn::SyncFence>& /*waitFor*/,
+        nn::MeasureTiming /*measure*/, const nn::OptionalTimePoint& /*deadline*/,
+        const nn::OptionalDuration& /*loopTimeoutDuration*/,
+        const nn::OptionalDuration& /*timeoutDurationAfterFence*/,
+        const std::vector<nn::TokenValuePair>& /*hints*/,
+        const std::vector<nn::ExtensionNameAndPrefix>& /*extensionNameToPrefix*/) const {
     return NN_ERROR(nn::ErrorStatus::GENERAL_FAILURE)
            << "IPreparedModel::executeFenced is not supported on 1.0 HAL service";
 }
 
 nn::GeneralResult<nn::SharedExecution> PreparedModel::createReusableExecution(
         const nn::Request& request, nn::MeasureTiming /*measure*/,
-        const nn::OptionalDuration& /*loopTimeoutDuration*/) const {
+        const nn::OptionalDuration& /*loopTimeoutDuration*/,
+        const std::vector<nn::TokenValuePair>& /*hints*/,
+        const std::vector<nn::ExtensionNameAndPrefix>& /*extensionNameToPrefix*/) const {
     // Ensure that request is ready for IPC.
     std::optional<nn::Request> maybeRequestInShared;
     hal::utils::RequestRelocation relocation;
diff --git a/neuralnetworks/1.0/utils/test/DeviceTest.cpp b/neuralnetworks/1.0/utils/test/DeviceTest.cpp
index 83e555f..9e9db16 100644
--- a/neuralnetworks/1.0/utils/test/DeviceTest.cpp
+++ b/neuralnetworks/1.0/utils/test/DeviceTest.cpp
@@ -380,7 +380,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_TRUE(result.has_value())
@@ -399,7 +399,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -417,7 +417,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -435,7 +435,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -452,7 +452,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -469,7 +469,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -488,7 +488,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
diff --git a/neuralnetworks/1.0/utils/test/PreparedModelTest.cpp b/neuralnetworks/1.0/utils/test/PreparedModelTest.cpp
index 7820c06..e03a98d 100644
--- a/neuralnetworks/1.0/utils/test/PreparedModelTest.cpp
+++ b/neuralnetworks/1.0/utils/test/PreparedModelTest.cpp
@@ -121,7 +121,7 @@
             .WillOnce(Invoke(makeExecute(V1_0::ErrorStatus::NONE, V1_0::ErrorStatus::NONE)));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     EXPECT_TRUE(result.has_value())
@@ -138,7 +138,7 @@
                                          V1_0::ErrorStatus::GENERAL_FAILURE)));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -155,7 +155,7 @@
                     makeExecute(V1_0::ErrorStatus::NONE, V1_0::ErrorStatus::GENERAL_FAILURE)));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -171,7 +171,7 @@
             .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -187,7 +187,7 @@
             .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -205,7 +205,7 @@
     EXPECT_CALL(*mockPreparedModel, execute(_, _)).Times(1).WillOnce(InvokeWithoutArgs(ret));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -218,7 +218,7 @@
     const auto preparedModel = PreparedModel::create(mockPreparedModel).value();
 
     // run test
-    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {});
+    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -235,7 +235,7 @@
             .WillRepeatedly(Invoke(makeExecute(V1_0::ErrorStatus::NONE, V1_0::ErrorStatus::NONE)));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -258,7 +258,7 @@
                                          V1_0::ErrorStatus::GENERAL_FAILURE)));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -279,7 +279,7 @@
                     makeExecute(V1_0::ErrorStatus::NONE, V1_0::ErrorStatus::GENERAL_FAILURE)));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -299,7 +299,7 @@
             .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -319,7 +319,7 @@
             .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -341,7 +341,7 @@
     EXPECT_CALL(*mockPreparedModel, execute(_, _)).Times(1).WillOnce(InvokeWithoutArgs(ret));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -358,7 +358,7 @@
     const auto preparedModel = PreparedModel::create(mockPreparedModel).value();
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
diff --git a/neuralnetworks/1.1/utils/include/nnapi/hal/1.1/Device.h b/neuralnetworks/1.1/utils/include/nnapi/hal/1.1/Device.h
index d6bd36a..38ca138 100644
--- a/neuralnetworks/1.1/utils/include/nnapi/hal/1.1/Device.h
+++ b/neuralnetworks/1.1/utils/include/nnapi/hal/1.1/Device.h
@@ -64,8 +64,9 @@
     nn::GeneralResult<nn::SharedPreparedModel> prepareModel(
             const nn::Model& model, nn::ExecutionPreference preference, nn::Priority priority,
             nn::OptionalTimePoint deadline, const std::vector<nn::SharedHandle>& modelCache,
-            const std::vector<nn::SharedHandle>& dataCache,
-            const nn::CacheToken& token) const override;
+            const std::vector<nn::SharedHandle>& dataCache, const nn::CacheToken& token,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     nn::GeneralResult<nn::SharedPreparedModel> prepareModelFromCache(
             nn::OptionalTimePoint deadline, const std::vector<nn::SharedHandle>& modelCache,
diff --git a/neuralnetworks/1.1/utils/src/Device.cpp b/neuralnetworks/1.1/utils/src/Device.cpp
index 3effa84..28f3276 100644
--- a/neuralnetworks/1.1/utils/src/Device.cpp
+++ b/neuralnetworks/1.1/utils/src/Device.cpp
@@ -143,7 +143,9 @@
 nn::GeneralResult<nn::SharedPreparedModel> Device::prepareModel(
         const nn::Model& model, nn::ExecutionPreference preference, nn::Priority /*priority*/,
         nn::OptionalTimePoint /*deadline*/, const std::vector<nn::SharedHandle>& /*modelCache*/,
-        const std::vector<nn::SharedHandle>& /*dataCache*/, const nn::CacheToken& /*token*/) const {
+        const std::vector<nn::SharedHandle>& /*dataCache*/, const nn::CacheToken& /*token*/,
+        const std::vector<nn::TokenValuePair>& /*hints*/,
+        const std::vector<nn::ExtensionNameAndPrefix>& /*extensionNameToPrefix*/) const {
     // Ensure that model is ready for IPC.
     std::optional<nn::Model> maybeModelInShared;
     const nn::Model& modelInShared =
diff --git a/neuralnetworks/1.1/utils/test/DeviceTest.cpp b/neuralnetworks/1.1/utils/test/DeviceTest.cpp
index 2248da6..8ab87bc 100644
--- a/neuralnetworks/1.1/utils/test/DeviceTest.cpp
+++ b/neuralnetworks/1.1/utils/test/DeviceTest.cpp
@@ -390,7 +390,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_TRUE(result.has_value())
@@ -409,7 +409,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -427,7 +427,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -445,7 +445,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -462,7 +462,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -479,7 +479,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -498,7 +498,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
diff --git a/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Burst.h b/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Burst.h
index ac9411c..1b28476 100644
--- a/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Burst.h
+++ b/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Burst.h
@@ -170,13 +170,16 @@
     // See IBurst::execute for information on this method.
     nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> execute(
             const nn::Request& request, nn::MeasureTiming measure,
-            const nn::OptionalTimePoint& deadline,
-            const nn::OptionalDuration& loopTimeoutDuration) const override;
+            const nn::OptionalTimePoint& deadline, const nn::OptionalDuration& loopTimeoutDuration,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     // See IBurst::createReusableExecution for information on this method.
     nn::GeneralResult<nn::SharedExecution> createReusableExecution(
             const nn::Request& request, nn::MeasureTiming measure,
-            const nn::OptionalDuration& loopTimeoutDuration) const override;
+            const nn::OptionalDuration& loopTimeoutDuration,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     // If fallback is not nullptr, this method will invoke the fallback function to try another
     // execution path if the packet could not be sent. Otherwise, failing to send the packet will
diff --git a/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Conversions.h b/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Conversions.h
index c3348aa..4f13adc 100644
--- a/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Conversions.h
+++ b/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Conversions.h
@@ -37,7 +37,7 @@
 GeneralResult<Operand::ExtraParams> unvalidatedConvert(
         const hal::V1_2::Operand::ExtraParams& extraParams);
 GeneralResult<Model> unvalidatedConvert(const hal::V1_2::Model& model);
-GeneralResult<Model::ExtensionNameAndPrefix> unvalidatedConvert(
+GeneralResult<ExtensionNameAndPrefix> unvalidatedConvert(
         const hal::V1_2::Model::ExtensionNameAndPrefix& extensionNameAndPrefix);
 GeneralResult<OutputShape> unvalidatedConvert(const hal::V1_2::OutputShape& outputShape);
 GeneralResult<MeasureTiming> unvalidatedConvert(const hal::V1_2::MeasureTiming& measureTiming);
@@ -78,7 +78,7 @@
         const nn::Operand::ExtraParams& extraParams);
 nn::GeneralResult<Model> unvalidatedConvert(const nn::Model& model);
 nn::GeneralResult<Model::ExtensionNameAndPrefix> unvalidatedConvert(
-        const nn::Model::ExtensionNameAndPrefix& extensionNameAndPrefix);
+        const nn::ExtensionNameAndPrefix& extensionNameAndPrefix);
 nn::GeneralResult<OutputShape> unvalidatedConvert(const nn::OutputShape& outputShape);
 nn::GeneralResult<MeasureTiming> unvalidatedConvert(const nn::MeasureTiming& measureTiming);
 nn::GeneralResult<Timing> unvalidatedConvert(const nn::Timing& timing);
diff --git a/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Device.h b/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Device.h
index e7ac172..d92cf50 100644
--- a/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Device.h
+++ b/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Device.h
@@ -83,8 +83,9 @@
     nn::GeneralResult<nn::SharedPreparedModel> prepareModel(
             const nn::Model& model, nn::ExecutionPreference preference, nn::Priority priority,
             nn::OptionalTimePoint deadline, const std::vector<nn::SharedHandle>& modelCache,
-            const std::vector<nn::SharedHandle>& dataCache,
-            const nn::CacheToken& token) const override;
+            const std::vector<nn::SharedHandle>& dataCache, const nn::CacheToken& token,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     nn::GeneralResult<nn::SharedPreparedModel> prepareModelFromCache(
             nn::OptionalTimePoint deadline, const std::vector<nn::SharedHandle>& modelCache,
diff --git a/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/PreparedModel.h b/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/PreparedModel.h
index 1150e5e..72a5b2f 100644
--- a/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/PreparedModel.h
+++ b/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/PreparedModel.h
@@ -49,18 +49,23 @@
 
     nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> execute(
             const nn::Request& request, nn::MeasureTiming measure,
-            const nn::OptionalTimePoint& deadline,
-            const nn::OptionalDuration& loopTimeoutDuration) const override;
+            const nn::OptionalTimePoint& deadline, const nn::OptionalDuration& loopTimeoutDuration,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     nn::GeneralResult<std::pair<nn::SyncFence, nn::ExecuteFencedInfoCallback>> executeFenced(
             const nn::Request& request, const std::vector<nn::SyncFence>& waitFor,
             nn::MeasureTiming measure, const nn::OptionalTimePoint& deadline,
             const nn::OptionalDuration& loopTimeoutDuration,
-            const nn::OptionalDuration& timeoutDurationAfterFence) const override;
+            const nn::OptionalDuration& timeoutDurationAfterFence,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     nn::GeneralResult<nn::SharedExecution> createReusableExecution(
             const nn::Request& request, nn::MeasureTiming measure,
-            const nn::OptionalDuration& loopTimeoutDuration) const override;
+            const nn::OptionalDuration& loopTimeoutDuration,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     nn::GeneralResult<nn::SharedBurst> configureExecutionBurst() const override;
 
diff --git a/neuralnetworks/1.2/utils/src/Burst.cpp b/neuralnetworks/1.2/utils/src/Burst.cpp
index 911fbfa..23e8070 100644
--- a/neuralnetworks/1.2/utils/src/Burst.cpp
+++ b/neuralnetworks/1.2/utils/src/Burst.cpp
@@ -305,8 +305,9 @@
 
 nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> Burst::execute(
         const nn::Request& request, nn::MeasureTiming measure,
-        const nn::OptionalTimePoint& deadline,
-        const nn::OptionalDuration& loopTimeoutDuration) const {
+        const nn::OptionalTimePoint& deadline, const nn::OptionalDuration& loopTimeoutDuration,
+        const std::vector<nn::TokenValuePair>& /*hints*/,
+        const std::vector<nn::ExtensionNameAndPrefix>& /*extensionNameToPrefix*/) const {
     // This is the first point when we know an execution is occurring, so begin to collect
     // systraces. Note that the first point we can begin collecting systraces in
     // ExecutionBurstServer is when the RequestChannelReceiver realizes there is data in the FMQ, so
@@ -317,7 +318,7 @@
     // fall back to another execution path
     if (!compliantVersion(request).ok()) {
         // fallback to another execution path if the packet could not be sent
-        return kPreparedModel->execute(request, measure, deadline, loopTimeoutDuration);
+        return kPreparedModel->execute(request, measure, deadline, loopTimeoutDuration, {}, {});
     }
 
     // ensure that request is ready for IPC
@@ -346,7 +347,7 @@
     // send request packet
     const auto requestPacket = serialize(hidlRequest, hidlMeasure, slots);
     const auto fallback = [this, &request, measure, &deadline, &loopTimeoutDuration] {
-        return kPreparedModel->execute(request, measure, deadline, loopTimeoutDuration);
+        return kPreparedModel->execute(request, measure, deadline, loopTimeoutDuration, {}, {});
     };
     return executeInternal(requestPacket, relocation, fallback);
 }
@@ -354,14 +355,17 @@
 // See IBurst::createReusableExecution for information on this method.
 nn::GeneralResult<nn::SharedExecution> Burst::createReusableExecution(
         const nn::Request& request, nn::MeasureTiming measure,
-        const nn::OptionalDuration& loopTimeoutDuration) const {
+        const nn::OptionalDuration& loopTimeoutDuration,
+        const std::vector<nn::TokenValuePair>& /*hints*/,
+        const std::vector<nn::ExtensionNameAndPrefix>& /*extensionNameToPrefix*/) const {
     NNTRACE_RT(NNTRACE_PHASE_EXECUTION, "Burst::createReusableExecution");
 
     // if the request is valid but of a higher version than what's supported in burst execution,
     // fall back to another execution path
     if (!compliantVersion(request).ok()) {
         // fallback to another execution path if the packet could not be sent
-        return kPreparedModel->createReusableExecution(request, measure, loopTimeoutDuration);
+        return kPreparedModel->createReusableExecution(request, measure, loopTimeoutDuration, {},
+                                                       {});
     }
 
     // ensure that request is ready for IPC
diff --git a/neuralnetworks/1.2/utils/src/Conversions.cpp b/neuralnetworks/1.2/utils/src/Conversions.cpp
index 838d9c4..62ec2ed 100644
--- a/neuralnetworks/1.2/utils/src/Conversions.cpp
+++ b/neuralnetworks/1.2/utils/src/Conversions.cpp
@@ -212,9 +212,9 @@
     };
 }
 
-GeneralResult<Model::ExtensionNameAndPrefix> unvalidatedConvert(
+GeneralResult<ExtensionNameAndPrefix> unvalidatedConvert(
         const hal::V1_2::Model::ExtensionNameAndPrefix& extensionNameAndPrefix) {
-    return Model::ExtensionNameAndPrefix{
+    return ExtensionNameAndPrefix{
             .name = extensionNameAndPrefix.name,
             .prefix = extensionNameAndPrefix.prefix,
     };
@@ -495,7 +495,7 @@
 }
 
 nn::GeneralResult<Model::ExtensionNameAndPrefix> unvalidatedConvert(
-        const nn::Model::ExtensionNameAndPrefix& extensionNameAndPrefix) {
+        const nn::ExtensionNameAndPrefix& extensionNameAndPrefix) {
     return Model::ExtensionNameAndPrefix{
             .name = extensionNameAndPrefix.name,
             .prefix = extensionNameAndPrefix.prefix,
diff --git a/neuralnetworks/1.2/utils/src/Device.cpp b/neuralnetworks/1.2/utils/src/Device.cpp
index e7acecd..3a58d2c 100644
--- a/neuralnetworks/1.2/utils/src/Device.cpp
+++ b/neuralnetworks/1.2/utils/src/Device.cpp
@@ -236,7 +236,9 @@
 nn::GeneralResult<nn::SharedPreparedModel> Device::prepareModel(
         const nn::Model& model, nn::ExecutionPreference preference, nn::Priority /*priority*/,
         nn::OptionalTimePoint /*deadline*/, const std::vector<nn::SharedHandle>& modelCache,
-        const std::vector<nn::SharedHandle>& dataCache, const nn::CacheToken& token) const {
+        const std::vector<nn::SharedHandle>& dataCache, const nn::CacheToken& token,
+        const std::vector<nn::TokenValuePair>& /*hints*/,
+        const std::vector<nn::ExtensionNameAndPrefix>& /*extensionNameToPrefix*/) const {
     // Ensure that model is ready for IPC.
     std::optional<nn::Model> maybeModelInShared;
     const nn::Model& modelInShared =
diff --git a/neuralnetworks/1.2/utils/src/PreparedModel.cpp b/neuralnetworks/1.2/utils/src/PreparedModel.cpp
index 6df3df3..feb3951 100644
--- a/neuralnetworks/1.2/utils/src/PreparedModel.cpp
+++ b/neuralnetworks/1.2/utils/src/PreparedModel.cpp
@@ -91,7 +91,9 @@
 nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> PreparedModel::execute(
         const nn::Request& request, nn::MeasureTiming measure,
         const nn::OptionalTimePoint& /*deadline*/,
-        const nn::OptionalDuration& /*loopTimeoutDuration*/) const {
+        const nn::OptionalDuration& /*loopTimeoutDuration*/,
+        const std::vector<nn::TokenValuePair>& /*hints*/,
+        const std::vector<nn::ExtensionNameAndPrefix>& /*extensionNameToPrefix*/) const {
     // Ensure that request is ready for IPC.
     std::optional<nn::Request> maybeRequestInShared;
     hal::utils::RequestRelocation relocation;
@@ -123,19 +125,22 @@
 }
 
 nn::GeneralResult<std::pair<nn::SyncFence, nn::ExecuteFencedInfoCallback>>
-PreparedModel::executeFenced(const nn::Request& /*request*/,
-                             const std::vector<nn::SyncFence>& /*waitFor*/,
-                             nn::MeasureTiming /*measure*/,
-                             const nn::OptionalTimePoint& /*deadline*/,
-                             const nn::OptionalDuration& /*loopTimeoutDuration*/,
-                             const nn::OptionalDuration& /*timeoutDurationAfterFence*/) const {
+PreparedModel::executeFenced(
+        const nn::Request& /*request*/, const std::vector<nn::SyncFence>& /*waitFor*/,
+        nn::MeasureTiming /*measure*/, const nn::OptionalTimePoint& /*deadline*/,
+        const nn::OptionalDuration& /*loopTimeoutDuration*/,
+        const nn::OptionalDuration& /*timeoutDurationAfterFence*/,
+        const std::vector<nn::TokenValuePair>& /*hints*/,
+        const std::vector<nn::ExtensionNameAndPrefix>& /*extensionNameToPrefix*/) const {
     return NN_ERROR(nn::ErrorStatus::GENERAL_FAILURE)
            << "IPreparedModel::executeFenced is not supported on 1.2 HAL service";
 }
 
 nn::GeneralResult<nn::SharedExecution> PreparedModel::createReusableExecution(
         const nn::Request& request, nn::MeasureTiming measure,
-        const nn::OptionalDuration& /*loopTimeoutDuration*/) const {
+        const nn::OptionalDuration& /*loopTimeoutDuration*/,
+        const std::vector<nn::TokenValuePair>& /*hints*/,
+        const std::vector<nn::ExtensionNameAndPrefix>& /*extensionNameToPrefix*/) const {
     // Ensure that request is ready for IPC.
     std::optional<nn::Request> maybeRequestInShared;
     hal::utils::RequestRelocation relocation;
diff --git a/neuralnetworks/1.2/utils/test/DeviceTest.cpp b/neuralnetworks/1.2/utils/test/DeviceTest.cpp
index 1dc6285..0d8c141 100644
--- a/neuralnetworks/1.2/utils/test/DeviceTest.cpp
+++ b/neuralnetworks/1.2/utils/test/DeviceTest.cpp
@@ -636,7 +636,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_TRUE(result.has_value())
@@ -655,7 +655,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -673,7 +673,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -691,7 +691,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -708,7 +708,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -725,7 +725,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -746,7 +746,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
diff --git a/neuralnetworks/1.2/utils/test/PreparedModelTest.cpp b/neuralnetworks/1.2/utils/test/PreparedModelTest.cpp
index 5e2ad79..a5ec9d3 100644
--- a/neuralnetworks/1.2/utils/test/PreparedModelTest.cpp
+++ b/neuralnetworks/1.2/utils/test/PreparedModelTest.cpp
@@ -154,7 +154,7 @@
             .WillOnce(Invoke(makeExecuteSynchronously(V1_0::ErrorStatus::NONE, {}, kNoTiming)));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     EXPECT_TRUE(result.has_value())
@@ -172,7 +172,7 @@
                     makeExecuteSynchronously(V1_0::ErrorStatus::GENERAL_FAILURE, {}, kNoTiming)));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -189,7 +189,7 @@
             .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -206,7 +206,7 @@
             .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -224,7 +224,7 @@
                                                        V1_0::ErrorStatus::NONE, {}, kNoTiming)));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     EXPECT_TRUE(result.has_value())
@@ -243,7 +243,7 @@
                                                        kNoTiming)));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -261,7 +261,7 @@
                     V1_0::ErrorStatus::NONE, V1_0::ErrorStatus::GENERAL_FAILURE, {}, kNoTiming)));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -278,7 +278,7 @@
             .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -295,7 +295,7 @@
             .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -314,7 +314,7 @@
     EXPECT_CALL(*mockPreparedModel, execute_1_2(_, _, _)).Times(1).WillOnce(InvokeWithoutArgs(ret));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -328,7 +328,7 @@
             PreparedModel::create(mockPreparedModel, /*executeSynchronously=*/true).value();
 
     // run test
-    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {});
+    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -347,7 +347,7 @@
                     Invoke(makeExecuteSynchronously(V1_0::ErrorStatus::NONE, {}, kNoTiming)));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -371,7 +371,7 @@
                     makeExecuteSynchronously(V1_0::ErrorStatus::GENERAL_FAILURE, {}, kNoTiming)));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -392,7 +392,7 @@
             .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -413,7 +413,7 @@
             .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -436,7 +436,7 @@
                     V1_0::ErrorStatus::NONE, V1_0::ErrorStatus::NONE, {}, kNoTiming)));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -461,7 +461,7 @@
                                                        kNoTiming)));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -483,7 +483,7 @@
                     V1_0::ErrorStatus::NONE, V1_0::ErrorStatus::GENERAL_FAILURE, {}, kNoTiming)));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -504,7 +504,7 @@
             .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -525,7 +525,7 @@
             .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -548,7 +548,7 @@
     EXPECT_CALL(*mockPreparedModel, execute_1_2(_, _, _)).Times(1).WillOnce(InvokeWithoutArgs(ret));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -566,7 +566,7 @@
             PreparedModel::create(mockPreparedModel, /*executeSynchronously=*/true).value();
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
diff --git a/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Device.h b/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Device.h
index c3c6fc4..cf5e5ea0 100644
--- a/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Device.h
+++ b/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Device.h
@@ -66,8 +66,9 @@
     nn::GeneralResult<nn::SharedPreparedModel> prepareModel(
             const nn::Model& model, nn::ExecutionPreference preference, nn::Priority priority,
             nn::OptionalTimePoint deadline, const std::vector<nn::SharedHandle>& modelCache,
-            const std::vector<nn::SharedHandle>& dataCache,
-            const nn::CacheToken& token) const override;
+            const std::vector<nn::SharedHandle>& dataCache, const nn::CacheToken& token,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     nn::GeneralResult<nn::SharedPreparedModel> prepareModelFromCache(
             nn::OptionalTimePoint deadline, const std::vector<nn::SharedHandle>& modelCache,
diff --git a/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/PreparedModel.h b/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/PreparedModel.h
index 480438d..124cc43 100644
--- a/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/PreparedModel.h
+++ b/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/PreparedModel.h
@@ -48,18 +48,23 @@
 
     nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> execute(
             const nn::Request& request, nn::MeasureTiming measure,
-            const nn::OptionalTimePoint& deadline,
-            const nn::OptionalDuration& loopTimeoutDuration) const override;
+            const nn::OptionalTimePoint& deadline, const nn::OptionalDuration& loopTimeoutDuration,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     nn::GeneralResult<std::pair<nn::SyncFence, nn::ExecuteFencedInfoCallback>> executeFenced(
             const nn::Request& request, const std::vector<nn::SyncFence>& waitFor,
             nn::MeasureTiming measure, const nn::OptionalTimePoint& deadline,
             const nn::OptionalDuration& loopTimeoutDuration,
-            const nn::OptionalDuration& timeoutDurationAfterFence) const override;
+            const nn::OptionalDuration& timeoutDurationAfterFence,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     nn::GeneralResult<nn::SharedExecution> createReusableExecution(
             const nn::Request& request, nn::MeasureTiming measure,
-            const nn::OptionalDuration& loopTimeoutDuration) const override;
+            const nn::OptionalDuration& loopTimeoutDuration,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     nn::GeneralResult<nn::SharedBurst> configureExecutionBurst() const override;
 
diff --git a/neuralnetworks/1.3/utils/src/Conversions.cpp b/neuralnetworks/1.3/utils/src/Conversions.cpp
index a1d414c..09e9d80 100644
--- a/neuralnetworks/1.3/utils/src/Conversions.cpp
+++ b/neuralnetworks/1.3/utils/src/Conversions.cpp
@@ -396,7 +396,7 @@
 }
 
 nn::GeneralResult<V1_2::Model::ExtensionNameAndPrefix> unvalidatedConvert(
-        const nn::Model::ExtensionNameAndPrefix& extensionNameAndPrefix) {
+        const nn::ExtensionNameAndPrefix& extensionNameAndPrefix) {
     return V1_2::utils::unvalidatedConvert(extensionNameAndPrefix);
 }
 
diff --git a/neuralnetworks/1.3/utils/src/Device.cpp b/neuralnetworks/1.3/utils/src/Device.cpp
index 9517fda..824cec6 100644
--- a/neuralnetworks/1.3/utils/src/Device.cpp
+++ b/neuralnetworks/1.3/utils/src/Device.cpp
@@ -187,7 +187,9 @@
 nn::GeneralResult<nn::SharedPreparedModel> Device::prepareModel(
         const nn::Model& model, nn::ExecutionPreference preference, nn::Priority priority,
         nn::OptionalTimePoint deadline, const std::vector<nn::SharedHandle>& modelCache,
-        const std::vector<nn::SharedHandle>& dataCache, const nn::CacheToken& token) const {
+        const std::vector<nn::SharedHandle>& dataCache, const nn::CacheToken& token,
+        const std::vector<nn::TokenValuePair>& /*hints*/,
+        const std::vector<nn::ExtensionNameAndPrefix>& /*extensionNameToPrefix*/) const {
     // Ensure that model is ready for IPC.
     std::optional<nn::Model> maybeModelInShared;
     const nn::Model& modelInShared =
diff --git a/neuralnetworks/1.3/utils/src/PreparedModel.cpp b/neuralnetworks/1.3/utils/src/PreparedModel.cpp
index ce977e5..b92f877 100644
--- a/neuralnetworks/1.3/utils/src/PreparedModel.cpp
+++ b/neuralnetworks/1.3/utils/src/PreparedModel.cpp
@@ -135,8 +135,9 @@
 
 nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> PreparedModel::execute(
         const nn::Request& request, nn::MeasureTiming measure,
-        const nn::OptionalTimePoint& deadline,
-        const nn::OptionalDuration& loopTimeoutDuration) const {
+        const nn::OptionalTimePoint& deadline, const nn::OptionalDuration& loopTimeoutDuration,
+        const std::vector<nn::TokenValuePair>& /*hints*/,
+        const std::vector<nn::ExtensionNameAndPrefix>& /*extensionNameToPrefix*/) const {
     // Ensure that request is ready for IPC.
     std::optional<nn::Request> maybeRequestInShared;
     hal::utils::RequestRelocation relocation;
@@ -174,10 +175,13 @@
 }
 
 nn::GeneralResult<std::pair<nn::SyncFence, nn::ExecuteFencedInfoCallback>>
-PreparedModel::executeFenced(const nn::Request& request, const std::vector<nn::SyncFence>& waitFor,
-                             nn::MeasureTiming measure, const nn::OptionalTimePoint& deadline,
-                             const nn::OptionalDuration& loopTimeoutDuration,
-                             const nn::OptionalDuration& timeoutDurationAfterFence) const {
+PreparedModel::executeFenced(
+        const nn::Request& request, const std::vector<nn::SyncFence>& waitFor,
+        nn::MeasureTiming measure, const nn::OptionalTimePoint& deadline,
+        const nn::OptionalDuration& loopTimeoutDuration,
+        const nn::OptionalDuration& timeoutDurationAfterFence,
+        const std::vector<nn::TokenValuePair>& /*hints*/,
+        const std::vector<nn::ExtensionNameAndPrefix>& /*extensionNameToPrefix*/) const {
     // Ensure that request is ready for IPC.
     std::optional<nn::Request> maybeRequestInShared;
     hal::utils::RequestRelocation relocation;
@@ -230,7 +234,9 @@
 
 nn::GeneralResult<nn::SharedExecution> PreparedModel::createReusableExecution(
         const nn::Request& request, nn::MeasureTiming measure,
-        const nn::OptionalDuration& loopTimeoutDuration) const {
+        const nn::OptionalDuration& loopTimeoutDuration,
+        const std::vector<nn::TokenValuePair>& /*hints*/,
+        const std::vector<nn::ExtensionNameAndPrefix>& /*extensionNameToPrefix*/) const {
     // Ensure that request is ready for IPC.
     std::optional<nn::Request> maybeRequestInShared;
     hal::utils::RequestRelocation relocation;
diff --git a/neuralnetworks/1.3/utils/test/DeviceTest.cpp b/neuralnetworks/1.3/utils/test/DeviceTest.cpp
index 7eba4bc..6f48837 100644
--- a/neuralnetworks/1.3/utils/test/DeviceTest.cpp
+++ b/neuralnetworks/1.3/utils/test/DeviceTest.cpp
@@ -658,7 +658,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_TRUE(result.has_value())
@@ -677,7 +677,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -695,7 +695,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -713,7 +713,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -730,7 +730,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -747,7 +747,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -768,7 +768,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
diff --git a/neuralnetworks/1.3/utils/test/PreparedModelTest.cpp b/neuralnetworks/1.3/utils/test/PreparedModelTest.cpp
index 6dbbd6b..51b5d29 100644
--- a/neuralnetworks/1.3/utils/test/PreparedModelTest.cpp
+++ b/neuralnetworks/1.3/utils/test/PreparedModelTest.cpp
@@ -182,7 +182,7 @@
             .WillOnce(Invoke(makeExecuteSynchronously(V1_3::ErrorStatus::NONE, {}, kNoTiming)));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     EXPECT_TRUE(result.has_value())
@@ -200,7 +200,7 @@
                     makeExecuteSynchronously(V1_3::ErrorStatus::GENERAL_FAILURE, {}, kNoTiming)));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -217,7 +217,7 @@
             .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -234,7 +234,7 @@
             .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -252,7 +252,7 @@
                                                        V1_3::ErrorStatus::NONE, {}, kNoTiming)));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     EXPECT_TRUE(result.has_value())
@@ -271,7 +271,7 @@
                                                        kNoTiming)));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -289,7 +289,7 @@
                     V1_3::ErrorStatus::NONE, V1_3::ErrorStatus::GENERAL_FAILURE, {}, kNoTiming)));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -306,7 +306,7 @@
             .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -323,7 +323,7 @@
             .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -344,7 +344,7 @@
             .WillOnce(InvokeWithoutArgs(ret));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -366,7 +366,7 @@
             .WillOnce(Invoke(makeExecuteFencedReturn(V1_3::ErrorStatus::NONE, {}, mockCallback)));
 
     // run test
-    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {});
+    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_TRUE(result.has_value())
@@ -396,7 +396,7 @@
             .WillOnce(Invoke(makeExecuteFencedReturn(V1_3::ErrorStatus::NONE, {}, mockCallback)));
 
     // run test
-    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {});
+    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_TRUE(result.has_value())
@@ -422,7 +422,7 @@
                     makeExecuteFencedReturn(V1_3::ErrorStatus::GENERAL_FAILURE, {}, nullptr)));
 
     // run test
-    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {});
+    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -439,7 +439,7 @@
             .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
 
     // run test
-    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {});
+    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -456,7 +456,7 @@
             .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
 
     // run test
-    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {});
+    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -475,7 +475,7 @@
                     Invoke(makeExecuteSynchronously(V1_3::ErrorStatus::NONE, {}, kNoTiming)));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -499,7 +499,7 @@
                     makeExecuteSynchronously(V1_3::ErrorStatus::GENERAL_FAILURE, {}, kNoTiming)));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -520,7 +520,7 @@
             .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -541,7 +541,7 @@
             .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -564,7 +564,7 @@
                     V1_3::ErrorStatus::NONE, V1_3::ErrorStatus::NONE, {}, kNoTiming)));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -589,7 +589,7 @@
                                                        kNoTiming)));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -611,7 +611,7 @@
                     V1_3::ErrorStatus::NONE, V1_3::ErrorStatus::GENERAL_FAILURE, {}, kNoTiming)));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -628,7 +628,7 @@
             .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -649,7 +649,7 @@
             .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -674,7 +674,7 @@
             .WillOnce(InvokeWithoutArgs(ret));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -702,7 +702,7 @@
                     Invoke(makeExecuteFencedReturn(V1_3::ErrorStatus::NONE, {}, mockCallback)));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -738,7 +738,7 @@
             .WillOnce(Invoke(makeExecuteFencedReturn(V1_3::ErrorStatus::NONE, {}, mockCallback)));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -768,7 +768,7 @@
                     makeExecuteFencedReturn(V1_3::ErrorStatus::GENERAL_FAILURE, {}, nullptr)));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -789,7 +789,7 @@
             .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -810,7 +810,7 @@
             .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
diff --git a/neuralnetworks/1.3/vts/functional/MemoryDomainTests.cpp b/neuralnetworks/1.3/vts/functional/MemoryDomainTests.cpp
index e2fa6e4..af3641a 100644
--- a/neuralnetworks/1.3/vts/functional/MemoryDomainTests.cpp
+++ b/neuralnetworks/1.3/vts/functional/MemoryDomainTests.cpp
@@ -1158,12 +1158,15 @@
     auto [buffer, token] = allocateBuffer(preparedModel, {0}, {0}, kTestOperand.dimensions);
     if (buffer == nullptr) return;
 
-    Request::MemoryPool sharedMemory = createSharedMemoryPool(kTestOperandDataSize);
-    Request::MemoryPool deviceMemory = createDeviceMemoryPool(token);
+    // Use an incompatible dimension and make sure the length matches with the bad dimension.
     auto badDimensions = kTestOperand.dimensions;
     badDimensions[0] = 2;
+    const uint32_t badTestOperandDataSize = kTestOperandDataSize * 2;
+
+    Request::MemoryPool sharedMemory = createSharedMemoryPool(badTestOperandDataSize);
+    Request::MemoryPool deviceMemory = createDeviceMemoryPool(token);
     RequestArgument sharedMemoryArg = {
-            .location = {.poolIndex = 0, .offset = 0, .length = kTestOperandDataSize},
+            .location = {.poolIndex = 0, .offset = 0, .length = badTestOperandDataSize},
             .dimensions = badDimensions};
     RequestArgument deviceMemoryArg = {.location = {.poolIndex = 1}};
     RequestArgument deviceMemoryArgWithBadDimensions = {.location = {.poolIndex = 1},
diff --git a/neuralnetworks/OWNERS b/neuralnetworks/OWNERS
index def3ea9..04c5d72 100644
--- a/neuralnetworks/OWNERS
+++ b/neuralnetworks/OWNERS
@@ -1,10 +1,2 @@
 # Bug component: 195575
-# Neuralnetworks team
-butlermichael@google.com
-dgross@google.com
-galarragas@google.com
-ianhua@google.com
-jeanluc@google.com
-miaowang@google.com
-pszczepaniak@google.com
-xusongw@google.com
+include platform/packages/modules/NeuralNetworks:/NNAPI_OWNERS  # Neuralnetworks team
diff --git a/neuralnetworks/aidl/Android.bp b/neuralnetworks/aidl/Android.bp
index cbb6ce5..47f3b30 100644
--- a/neuralnetworks/aidl/Android.bp
+++ b/neuralnetworks/aidl/Android.bp
@@ -38,5 +38,6 @@
     versions: [
         "1",
         "2",
+        "3",
     ],
 }
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/.hash b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/.hash
new file mode 100644
index 0000000..3b9f018
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/.hash
@@ -0,0 +1 @@
+8c2c4ca2327e6f779dad6119c03d832ea4e1def1
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/BufferDesc.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/BufferDesc.aidl
new file mode 100644
index 0000000..05cec76
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/BufferDesc.aidl
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+parcelable BufferDesc {
+  int[] dimensions;
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/BufferRole.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/BufferRole.aidl
new file mode 100644
index 0000000..10a6b75
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/BufferRole.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+parcelable BufferRole {
+  int modelIndex;
+  int ioIndex;
+  float probability;
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/Capabilities.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/Capabilities.aidl
new file mode 100644
index 0000000..30877c0
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/Capabilities.aidl
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+parcelable Capabilities {
+  android.hardware.neuralnetworks.PerformanceInfo relaxedFloat32toFloat16PerformanceScalar;
+  android.hardware.neuralnetworks.PerformanceInfo relaxedFloat32toFloat16PerformanceTensor;
+  android.hardware.neuralnetworks.OperandPerformance[] operandPerformance;
+  android.hardware.neuralnetworks.PerformanceInfo ifPerformance;
+  android.hardware.neuralnetworks.PerformanceInfo whilePerformance;
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/DataLocation.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/DataLocation.aidl
new file mode 100644
index 0000000..db49a38
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/DataLocation.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+parcelable DataLocation {
+  int poolIndex;
+  long offset;
+  long length;
+  long padding;
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/DeviceBuffer.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/DeviceBuffer.aidl
new file mode 100644
index 0000000..7cdd6db
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/DeviceBuffer.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+parcelable DeviceBuffer {
+  android.hardware.neuralnetworks.IBuffer buffer;
+  int token;
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/DeviceType.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/DeviceType.aidl
new file mode 100644
index 0000000..82fe8ae
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/DeviceType.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@Backing(type="int") @VintfStability
+enum DeviceType {
+  OTHER = 1,
+  CPU = 2,
+  GPU = 3,
+  ACCELERATOR = 4,
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/ErrorStatus.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/ErrorStatus.aidl
new file mode 100644
index 0000000..57d5d6e
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/ErrorStatus.aidl
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@Backing(type="int") @VintfStability
+enum ErrorStatus {
+  NONE = 0,
+  DEVICE_UNAVAILABLE = 1,
+  GENERAL_FAILURE = 2,
+  OUTPUT_INSUFFICIENT_SIZE = 3,
+  INVALID_ARGUMENT = 4,
+  MISSED_DEADLINE_TRANSIENT = 5,
+  MISSED_DEADLINE_PERSISTENT = 6,
+  RESOURCE_EXHAUSTED_TRANSIENT = 7,
+  RESOURCE_EXHAUSTED_PERSISTENT = 8,
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/ExecutionPreference.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/ExecutionPreference.aidl
new file mode 100644
index 0000000..4352d8f
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/ExecutionPreference.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@Backing(type="int") @VintfStability
+enum ExecutionPreference {
+  LOW_POWER = 0,
+  FAST_SINGLE_ANSWER = 1,
+  SUSTAINED_SPEED = 2,
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/ExecutionResult.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/ExecutionResult.aidl
new file mode 100644
index 0000000..44e9922
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/ExecutionResult.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+parcelable ExecutionResult {
+  boolean outputSufficientSize;
+  android.hardware.neuralnetworks.OutputShape[] outputShapes;
+  android.hardware.neuralnetworks.Timing timing;
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/Extension.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/Extension.aidl
new file mode 100644
index 0000000..c47028d
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/Extension.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+parcelable Extension {
+  String name;
+  android.hardware.neuralnetworks.ExtensionOperandTypeInformation[] operandTypes;
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/ExtensionNameAndPrefix.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/ExtensionNameAndPrefix.aidl
new file mode 100644
index 0000000..6c287fd
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/ExtensionNameAndPrefix.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+parcelable ExtensionNameAndPrefix {
+  String name;
+  char prefix;
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/ExtensionOperandTypeInformation.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/ExtensionOperandTypeInformation.aidl
new file mode 100644
index 0000000..a3680aa
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/ExtensionOperandTypeInformation.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+parcelable ExtensionOperandTypeInformation {
+  char type;
+  boolean isTensor;
+  int byteSize;
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/FencedExecutionResult.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/FencedExecutionResult.aidl
new file mode 100644
index 0000000..7952b34
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/FencedExecutionResult.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+parcelable FencedExecutionResult {
+  android.hardware.neuralnetworks.IFencedExecutionCallback callback;
+  @nullable ParcelFileDescriptor syncFence;
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/FusedActivationFunc.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/FusedActivationFunc.aidl
new file mode 100644
index 0000000..7e61bbb
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/FusedActivationFunc.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@Backing(type="int") @VintfStability
+enum FusedActivationFunc {
+  NONE = 0,
+  RELU = 1,
+  RELU1 = 2,
+  RELU6 = 3,
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/IBuffer.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/IBuffer.aidl
new file mode 100644
index 0000000..f10e7e2
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/IBuffer.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+interface IBuffer {
+  void copyFrom(in android.hardware.neuralnetworks.Memory src, in int[] dimensions);
+  void copyTo(in android.hardware.neuralnetworks.Memory dst);
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/IBurst.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/IBurst.aidl
new file mode 100644
index 0000000..eb3d0b0
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/IBurst.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+interface IBurst {
+  android.hardware.neuralnetworks.ExecutionResult executeSynchronously(in android.hardware.neuralnetworks.Request request, in long[] memoryIdentifierTokens, in boolean measureTiming, in long deadlineNs, in long loopTimeoutDurationNs);
+  void releaseMemoryResource(in long memoryIdentifierToken);
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/IDevice.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/IDevice.aidl
new file mode 100644
index 0000000..c9c67f2
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/IDevice.aidl
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+interface IDevice {
+  android.hardware.neuralnetworks.DeviceBuffer allocate(in android.hardware.neuralnetworks.BufferDesc desc, in android.hardware.neuralnetworks.IPreparedModelParcel[] preparedModels, in android.hardware.neuralnetworks.BufferRole[] inputRoles, in android.hardware.neuralnetworks.BufferRole[] outputRoles);
+  android.hardware.neuralnetworks.Capabilities getCapabilities();
+  android.hardware.neuralnetworks.NumberOfCacheFiles getNumberOfCacheFilesNeeded();
+  android.hardware.neuralnetworks.Extension[] getSupportedExtensions();
+  boolean[] getSupportedOperations(in android.hardware.neuralnetworks.Model model);
+  android.hardware.neuralnetworks.DeviceType getType();
+  String getVersionString();
+  void prepareModel(in android.hardware.neuralnetworks.Model model, in android.hardware.neuralnetworks.ExecutionPreference preference, in android.hardware.neuralnetworks.Priority priority, in long deadlineNs, in ParcelFileDescriptor[] modelCache, in ParcelFileDescriptor[] dataCache, in byte[] token, in android.hardware.neuralnetworks.IPreparedModelCallback callback);
+  void prepareModelFromCache(in long deadlineNs, in ParcelFileDescriptor[] modelCache, in ParcelFileDescriptor[] dataCache, in byte[] token, in android.hardware.neuralnetworks.IPreparedModelCallback callback);
+  const int BYTE_SIZE_OF_CACHE_TOKEN = 32;
+  const int MAX_NUMBER_OF_CACHE_FILES = 32;
+  const int EXTENSION_TYPE_HIGH_BITS_PREFIX = 15;
+  const int EXTENSION_TYPE_LOW_BITS_TYPE = 16;
+  const int OPERAND_TYPE_BASE_MAX = 65535;
+  const int OPERATION_TYPE_BASE_MAX = 65535;
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/IFencedExecutionCallback.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/IFencedExecutionCallback.aidl
new file mode 100644
index 0000000..0bfb80a
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/IFencedExecutionCallback.aidl
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+interface IFencedExecutionCallback {
+  android.hardware.neuralnetworks.ErrorStatus getExecutionInfo(out android.hardware.neuralnetworks.Timing timingLaunched, out android.hardware.neuralnetworks.Timing timingFenced);
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/IPreparedModel.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/IPreparedModel.aidl
new file mode 100644
index 0000000..fccb5dc
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/IPreparedModel.aidl
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+interface IPreparedModel {
+  android.hardware.neuralnetworks.ExecutionResult executeSynchronously(in android.hardware.neuralnetworks.Request request, in boolean measureTiming, in long deadlineNs, in long loopTimeoutDurationNs);
+  android.hardware.neuralnetworks.FencedExecutionResult executeFenced(in android.hardware.neuralnetworks.Request request, in ParcelFileDescriptor[] waitFor, in boolean measureTiming, in long deadlineNs, in long loopTimeoutDurationNs, in long durationNs);
+  android.hardware.neuralnetworks.IBurst configureExecutionBurst();
+  const long DEFAULT_LOOP_TIMEOUT_DURATION_NS = 2000000000;
+  const long MAXIMUM_LOOP_TIMEOUT_DURATION_NS = 15000000000;
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/IPreparedModelCallback.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/IPreparedModelCallback.aidl
new file mode 100644
index 0000000..e0c763b
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/IPreparedModelCallback.aidl
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+interface IPreparedModelCallback {
+  void notify(in android.hardware.neuralnetworks.ErrorStatus status, in android.hardware.neuralnetworks.IPreparedModel preparedModel);
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/IPreparedModelParcel.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/IPreparedModelParcel.aidl
new file mode 100644
index 0000000..dbedf12
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/IPreparedModelParcel.aidl
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+parcelable IPreparedModelParcel {
+  android.hardware.neuralnetworks.IPreparedModel preparedModel;
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/Memory.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/Memory.aidl
new file mode 100644
index 0000000..37fa102
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/Memory.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+union Memory {
+  android.hardware.common.Ashmem ashmem;
+  android.hardware.common.MappableFile mappableFile;
+  android.hardware.graphics.common.HardwareBuffer hardwareBuffer;
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/Model.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/Model.aidl
new file mode 100644
index 0000000..30d8dda
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/Model.aidl
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+parcelable Model {
+  android.hardware.neuralnetworks.Subgraph main;
+  android.hardware.neuralnetworks.Subgraph[] referenced;
+  byte[] operandValues;
+  android.hardware.neuralnetworks.Memory[] pools;
+  boolean relaxComputationFloat32toFloat16;
+  android.hardware.neuralnetworks.ExtensionNameAndPrefix[] extensionNameToPrefix;
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/NumberOfCacheFiles.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/NumberOfCacheFiles.aidl
new file mode 100644
index 0000000..9314760
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/NumberOfCacheFiles.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+parcelable NumberOfCacheFiles {
+  int numModelCache;
+  int numDataCache;
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/Operand.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/Operand.aidl
new file mode 100644
index 0000000..1d9bdd8
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/Operand.aidl
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+parcelable Operand {
+  android.hardware.neuralnetworks.OperandType type = android.hardware.neuralnetworks.OperandType.FLOAT32;
+  int[] dimensions;
+  float scale;
+  int zeroPoint;
+  android.hardware.neuralnetworks.OperandLifeTime lifetime = android.hardware.neuralnetworks.OperandLifeTime.TEMPORARY_VARIABLE;
+  android.hardware.neuralnetworks.DataLocation location;
+  @nullable android.hardware.neuralnetworks.OperandExtraParams extraParams;
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/OperandExtraParams.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/OperandExtraParams.aidl
new file mode 100644
index 0000000..14792cf
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/OperandExtraParams.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+union OperandExtraParams {
+  android.hardware.neuralnetworks.SymmPerChannelQuantParams channelQuant;
+  byte[] extension;
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/OperandLifeTime.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/OperandLifeTime.aidl
new file mode 100644
index 0000000..40adfb1
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/OperandLifeTime.aidl
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@Backing(type="int") @VintfStability
+enum OperandLifeTime {
+  TEMPORARY_VARIABLE = 0,
+  SUBGRAPH_INPUT = 1,
+  SUBGRAPH_OUTPUT = 2,
+  CONSTANT_COPY = 3,
+  CONSTANT_POOL = 4,
+  NO_VALUE = 5,
+  SUBGRAPH = 6,
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/OperandPerformance.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/OperandPerformance.aidl
new file mode 100644
index 0000000..ebb361b
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/OperandPerformance.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+parcelable OperandPerformance {
+  android.hardware.neuralnetworks.OperandType type = android.hardware.neuralnetworks.OperandType.FLOAT32;
+  android.hardware.neuralnetworks.PerformanceInfo info;
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/OperandType.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/OperandType.aidl
new file mode 100644
index 0000000..9f2c759
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/OperandType.aidl
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@Backing(type="int") @VintfStability
+enum OperandType {
+  FLOAT32 = 0,
+  INT32 = 1,
+  UINT32 = 2,
+  TENSOR_FLOAT32 = 3,
+  TENSOR_INT32 = 4,
+  TENSOR_QUANT8_ASYMM = 5,
+  BOOL = 6,
+  TENSOR_QUANT16_SYMM = 7,
+  TENSOR_FLOAT16 = 8,
+  TENSOR_BOOL8 = 9,
+  FLOAT16 = 10,
+  TENSOR_QUANT8_SYMM_PER_CHANNEL = 11,
+  TENSOR_QUANT16_ASYMM = 12,
+  TENSOR_QUANT8_SYMM = 13,
+  TENSOR_QUANT8_ASYMM_SIGNED = 14,
+  SUBGRAPH = 15,
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/Operation.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/Operation.aidl
new file mode 100644
index 0000000..a4a3fbe
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/Operation.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+parcelable Operation {
+  android.hardware.neuralnetworks.OperationType type = android.hardware.neuralnetworks.OperationType.ADD;
+  int[] inputs;
+  int[] outputs;
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/OperationType.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/OperationType.aidl
new file mode 100644
index 0000000..34506c8
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/OperationType.aidl
@@ -0,0 +1,143 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@Backing(type="int") @VintfStability
+enum OperationType {
+  ADD = 0,
+  AVERAGE_POOL_2D = 1,
+  CONCATENATION = 2,
+  CONV_2D = 3,
+  DEPTHWISE_CONV_2D = 4,
+  DEPTH_TO_SPACE = 5,
+  DEQUANTIZE = 6,
+  EMBEDDING_LOOKUP = 7,
+  FLOOR = 8,
+  FULLY_CONNECTED = 9,
+  HASHTABLE_LOOKUP = 10,
+  L2_NORMALIZATION = 11,
+  L2_POOL_2D = 12,
+  LOCAL_RESPONSE_NORMALIZATION = 13,
+  LOGISTIC = 14,
+  LSH_PROJECTION = 15,
+  LSTM = 16,
+  MAX_POOL_2D = 17,
+  MUL = 18,
+  RELU = 19,
+  RELU1 = 20,
+  RELU6 = 21,
+  RESHAPE = 22,
+  RESIZE_BILINEAR = 23,
+  RNN = 24,
+  SOFTMAX = 25,
+  SPACE_TO_DEPTH = 26,
+  SVDF = 27,
+  TANH = 28,
+  BATCH_TO_SPACE_ND = 29,
+  DIV = 30,
+  MEAN = 31,
+  PAD = 32,
+  SPACE_TO_BATCH_ND = 33,
+  SQUEEZE = 34,
+  STRIDED_SLICE = 35,
+  SUB = 36,
+  TRANSPOSE = 37,
+  ABS = 38,
+  ARGMAX = 39,
+  ARGMIN = 40,
+  AXIS_ALIGNED_BBOX_TRANSFORM = 41,
+  BIDIRECTIONAL_SEQUENCE_LSTM = 42,
+  BIDIRECTIONAL_SEQUENCE_RNN = 43,
+  BOX_WITH_NMS_LIMIT = 44,
+  CAST = 45,
+  CHANNEL_SHUFFLE = 46,
+  DETECTION_POSTPROCESSING = 47,
+  EQUAL = 48,
+  EXP = 49,
+  EXPAND_DIMS = 50,
+  GATHER = 51,
+  GENERATE_PROPOSALS = 52,
+  GREATER = 53,
+  GREATER_EQUAL = 54,
+  GROUPED_CONV_2D = 55,
+  HEATMAP_MAX_KEYPOINT = 56,
+  INSTANCE_NORMALIZATION = 57,
+  LESS = 58,
+  LESS_EQUAL = 59,
+  LOG = 60,
+  LOGICAL_AND = 61,
+  LOGICAL_NOT = 62,
+  LOGICAL_OR = 63,
+  LOG_SOFTMAX = 64,
+  MAXIMUM = 65,
+  MINIMUM = 66,
+  NEG = 67,
+  NOT_EQUAL = 68,
+  PAD_V2 = 69,
+  POW = 70,
+  PRELU = 71,
+  QUANTIZE = 72,
+  QUANTIZED_16BIT_LSTM = 73,
+  RANDOM_MULTINOMIAL = 74,
+  REDUCE_ALL = 75,
+  REDUCE_ANY = 76,
+  REDUCE_MAX = 77,
+  REDUCE_MIN = 78,
+  REDUCE_PROD = 79,
+  REDUCE_SUM = 80,
+  ROI_ALIGN = 81,
+  ROI_POOLING = 82,
+  RSQRT = 83,
+  SELECT = 84,
+  SIN = 85,
+  SLICE = 86,
+  SPLIT = 87,
+  SQRT = 88,
+  TILE = 89,
+  TOPK_V2 = 90,
+  TRANSPOSE_CONV_2D = 91,
+  UNIDIRECTIONAL_SEQUENCE_LSTM = 92,
+  UNIDIRECTIONAL_SEQUENCE_RNN = 93,
+  RESIZE_NEAREST_NEIGHBOR = 94,
+  QUANTIZED_LSTM = 95,
+  IF = 96,
+  WHILE = 97,
+  ELU = 98,
+  HARD_SWISH = 99,
+  FILL = 100,
+  RANK = 101,
+  BATCH_MATMUL = 102,
+  PACK = 103,
+  MIRROR_PAD = 104,
+  REVERSE = 105,
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/OutputShape.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/OutputShape.aidl
new file mode 100644
index 0000000..f733505
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/OutputShape.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+parcelable OutputShape {
+  int[] dimensions;
+  boolean isSufficient;
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/PerformanceInfo.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/PerformanceInfo.aidl
new file mode 100644
index 0000000..04910f5
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/PerformanceInfo.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+parcelable PerformanceInfo {
+  float execTime;
+  float powerUsage;
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/Priority.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/Priority.aidl
new file mode 100644
index 0000000..8f35709
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/Priority.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@Backing(type="int") @VintfStability
+enum Priority {
+  LOW = 0,
+  MEDIUM = 1,
+  HIGH = 2,
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/Request.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/Request.aidl
new file mode 100644
index 0000000..39ec7a9
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/Request.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+parcelable Request {
+  android.hardware.neuralnetworks.RequestArgument[] inputs;
+  android.hardware.neuralnetworks.RequestArgument[] outputs;
+  android.hardware.neuralnetworks.RequestMemoryPool[] pools;
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/RequestArgument.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/RequestArgument.aidl
new file mode 100644
index 0000000..e3541c0
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/RequestArgument.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+parcelable RequestArgument {
+  boolean hasNoValue;
+  android.hardware.neuralnetworks.DataLocation location;
+  int[] dimensions;
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/RequestMemoryPool.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/RequestMemoryPool.aidl
new file mode 100644
index 0000000..312f581
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/RequestMemoryPool.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+union RequestMemoryPool {
+  android.hardware.neuralnetworks.Memory pool;
+  int token;
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/Subgraph.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/Subgraph.aidl
new file mode 100644
index 0000000..b7d4451
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/Subgraph.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+parcelable Subgraph {
+  android.hardware.neuralnetworks.Operand[] operands;
+  android.hardware.neuralnetworks.Operation[] operations;
+  int[] inputIndexes;
+  int[] outputIndexes;
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/SymmPerChannelQuantParams.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/SymmPerChannelQuantParams.aidl
new file mode 100644
index 0000000..02d68f9
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/SymmPerChannelQuantParams.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+parcelable SymmPerChannelQuantParams {
+  float[] scales;
+  int channelDim;
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/Timing.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/Timing.aidl
new file mode 100644
index 0000000..bcc83cf
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/3/android/hardware/neuralnetworks/Timing.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+parcelable Timing {
+  long timeOnDeviceNs;
+  long timeInDriverNs;
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/ExecutionConfig.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/ExecutionConfig.aidl
new file mode 100644
index 0000000..cb85743
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/ExecutionConfig.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+parcelable ExecutionConfig {
+  boolean measureTiming;
+  long loopTimeoutDurationNs;
+  android.hardware.neuralnetworks.TokenValuePair[] executionHints;
+  android.hardware.neuralnetworks.ExtensionNameAndPrefix[] extensionNameToPrefix;
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/IBurst.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/IBurst.aidl
index eb3d0b0..461fdfa 100644
--- a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/IBurst.aidl
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/IBurst.aidl
@@ -36,4 +36,5 @@
 interface IBurst {
   android.hardware.neuralnetworks.ExecutionResult executeSynchronously(in android.hardware.neuralnetworks.Request request, in long[] memoryIdentifierTokens, in boolean measureTiming, in long deadlineNs, in long loopTimeoutDurationNs);
   void releaseMemoryResource(in long memoryIdentifierToken);
+  android.hardware.neuralnetworks.ExecutionResult executeSynchronouslyWithConfig(in android.hardware.neuralnetworks.Request request, in long[] memoryIdentifierTokens, in android.hardware.neuralnetworks.ExecutionConfig config, in long deadlineNs);
 }
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/IDevice.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/IDevice.aidl
index c9c67f2..c0fba47 100644
--- a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/IDevice.aidl
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/IDevice.aidl
@@ -43,6 +43,7 @@
   String getVersionString();
   void prepareModel(in android.hardware.neuralnetworks.Model model, in android.hardware.neuralnetworks.ExecutionPreference preference, in android.hardware.neuralnetworks.Priority priority, in long deadlineNs, in ParcelFileDescriptor[] modelCache, in ParcelFileDescriptor[] dataCache, in byte[] token, in android.hardware.neuralnetworks.IPreparedModelCallback callback);
   void prepareModelFromCache(in long deadlineNs, in ParcelFileDescriptor[] modelCache, in ParcelFileDescriptor[] dataCache, in byte[] token, in android.hardware.neuralnetworks.IPreparedModelCallback callback);
+  void prepareModelWithConfig(in android.hardware.neuralnetworks.Model model, in android.hardware.neuralnetworks.PrepareModelConfig config, in android.hardware.neuralnetworks.IPreparedModelCallback callback);
   const int BYTE_SIZE_OF_CACHE_TOKEN = 32;
   const int MAX_NUMBER_OF_CACHE_FILES = 32;
   const int EXTENSION_TYPE_HIGH_BITS_PREFIX = 15;
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/IExecution.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/IExecution.aidl
new file mode 100644
index 0000000..ab5275e
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/IExecution.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+interface IExecution {
+  android.hardware.neuralnetworks.ExecutionResult executeSynchronously(in long deadlineNs);
+  android.hardware.neuralnetworks.FencedExecutionResult executeFenced(in ParcelFileDescriptor[] waitFor, in long deadlineNs, in long durationNs);
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/IPreparedModel.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/IPreparedModel.aidl
index fccb5dc..fb0c372 100644
--- a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/IPreparedModel.aidl
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/IPreparedModel.aidl
@@ -37,6 +37,9 @@
   android.hardware.neuralnetworks.ExecutionResult executeSynchronously(in android.hardware.neuralnetworks.Request request, in boolean measureTiming, in long deadlineNs, in long loopTimeoutDurationNs);
   android.hardware.neuralnetworks.FencedExecutionResult executeFenced(in android.hardware.neuralnetworks.Request request, in ParcelFileDescriptor[] waitFor, in boolean measureTiming, in long deadlineNs, in long loopTimeoutDurationNs, in long durationNs);
   android.hardware.neuralnetworks.IBurst configureExecutionBurst();
+  android.hardware.neuralnetworks.IExecution createReusableExecution(in android.hardware.neuralnetworks.Request request, in android.hardware.neuralnetworks.ExecutionConfig config);
+  android.hardware.neuralnetworks.ExecutionResult executeSynchronouslyWithConfig(in android.hardware.neuralnetworks.Request request, in android.hardware.neuralnetworks.ExecutionConfig config, in long deadlineNs);
+  android.hardware.neuralnetworks.FencedExecutionResult executeFencedWithConfig(in android.hardware.neuralnetworks.Request request, in ParcelFileDescriptor[] waitFor, in android.hardware.neuralnetworks.ExecutionConfig config, in long deadlineNs, in long durationNs);
   const long DEFAULT_LOOP_TIMEOUT_DURATION_NS = 2000000000;
   const long MAXIMUM_LOOP_TIMEOUT_DURATION_NS = 15000000000;
 }
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/PrepareModelConfig.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/PrepareModelConfig.aidl
new file mode 100644
index 0000000..85c924f
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/PrepareModelConfig.aidl
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+parcelable PrepareModelConfig {
+  android.hardware.neuralnetworks.ExecutionPreference preference;
+  android.hardware.neuralnetworks.Priority priority;
+  long deadlineNs;
+  ParcelFileDescriptor[] modelCache;
+  ParcelFileDescriptor[] dataCache;
+  byte[] cacheToken;
+  android.hardware.neuralnetworks.TokenValuePair[] compilationHints;
+  android.hardware.neuralnetworks.ExtensionNameAndPrefix[] extensionNameToPrefix;
+}
diff --git a/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/TokenValuePair.aidl b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/TokenValuePair.aidl
new file mode 100644
index 0000000..e477d6e
--- /dev/null
+++ b/neuralnetworks/aidl/aidl_api/android.hardware.neuralnetworks/current/android/hardware/neuralnetworks/TokenValuePair.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.neuralnetworks;
+@VintfStability
+parcelable TokenValuePair {
+  int token;
+  byte[] value;
+}
diff --git a/neuralnetworks/aidl/android/hardware/neuralnetworks/ExecutionConfig.aidl b/neuralnetworks/aidl/android/hardware/neuralnetworks/ExecutionConfig.aidl
new file mode 100644
index 0000000..00f1e11
--- /dev/null
+++ b/neuralnetworks/aidl/android/hardware/neuralnetworks/ExecutionConfig.aidl
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.neuralnetworks;
+
+import android.hardware.neuralnetworks.ExtensionNameAndPrefix;
+import android.hardware.neuralnetworks.TokenValuePair;
+
+/**
+ * A type that is used to represent all configuration related to
+ * an Execution.
+ */
+@VintfStability
+parcelable ExecutionConfig {
+    /**
+     * Specifies whether or not to measure duration of the execution.
+     * For {@link IPreparedModel::executeSynchronouslyWithConfig}, the duration runs from the time
+     * the driver sees the corresponding call to the execute function to the time the driver returns
+     * from the function. For {@link IPreparedModel::executeFencedWithConfig}, please refer to
+     * {@link IPreparedModelCallback} for details.
+     */
+    boolean measureTiming;
+    /**
+     * The maximum amount of time in nanoseconds that should be spent
+     * executing a {@link OperationType::WHILE} operation. If a loop
+     * condition model does not output false within this duration,
+     * the execution must be aborted. If -1 is provided, the maximum
+     * amount of time is {@link DEFAULT_LOOP_TIMEOUT_DURATION_NS}.
+     * Other negative values are invalid. When provided, the duration
+     * must not exceed {@link MAXIMUM_LOOP_TIMEOUT_DURATION_NS}.
+     */
+    long loopTimeoutDurationNs;
+    /**
+     * A vector of token / value pairs represent vendor specific
+     * execution hints or metadata. The provided TokenValuePairs must not
+     * contain the same token twice. The driver must validate the
+     * data and ignore invalid hints. It is up to the driver to
+     * decide whether to respect the provided hints or not.
+     */
+    TokenValuePair[] executionHints;
+    /**
+     * The mapping between extension names and prefixes of token values.
+     * The driver must ignore the corresponding execution hint, if
+     * the extension is not supported.
+     */
+    ExtensionNameAndPrefix[] extensionNameToPrefix;
+}
diff --git a/neuralnetworks/aidl/android/hardware/neuralnetworks/Extension.aidl b/neuralnetworks/aidl/android/hardware/neuralnetworks/Extension.aidl
index 20109bd..9f70a53 100644
--- a/neuralnetworks/aidl/android/hardware/neuralnetworks/Extension.aidl
+++ b/neuralnetworks/aidl/android/hardware/neuralnetworks/Extension.aidl
@@ -20,6 +20,10 @@
 
 /**
  * Information about an extension.
+ *
+ * The extension can provide zero or more operation types (which are not enumerated), zero or more
+ * operand types (which are enumerated in {@link Extension::operandTypes}, and compilation and
+ * execution hints (which are not enumerated).
  */
 @VintfStability
 parcelable Extension {
diff --git a/neuralnetworks/aidl/android/hardware/neuralnetworks/ExtensionNameAndPrefix.aidl b/neuralnetworks/aidl/android/hardware/neuralnetworks/ExtensionNameAndPrefix.aidl
index 29be93f..6c296e0 100644
--- a/neuralnetworks/aidl/android/hardware/neuralnetworks/ExtensionNameAndPrefix.aidl
+++ b/neuralnetworks/aidl/android/hardware/neuralnetworks/ExtensionNameAndPrefix.aidl
@@ -17,7 +17,8 @@
 package android.hardware.neuralnetworks;
 
 /**
- * The mapping between extension names and prefixes of operand and operation type values.
+ * The mapping between extension names and prefixes of values like operand and operation type, and
+ * token in {@link TokenValuePair}.
  *
  * An operand or operation whose numeric type value is above {@link IDevice::OPERAND_TYPE_BASE_MAX}
  * or {@link IDevice::OPERATION_TYPE_BASE_MAX} respectively should be interpreted as an extension
diff --git a/neuralnetworks/aidl/android/hardware/neuralnetworks/IBurst.aidl b/neuralnetworks/aidl/android/hardware/neuralnetworks/IBurst.aidl
index decdc48..a05a7fb 100644
--- a/neuralnetworks/aidl/android/hardware/neuralnetworks/IBurst.aidl
+++ b/neuralnetworks/aidl/android/hardware/neuralnetworks/IBurst.aidl
@@ -17,6 +17,7 @@
 package android.hardware.neuralnetworks;
 
 import android.hardware.neuralnetworks.ErrorStatus;
+import android.hardware.neuralnetworks.ExecutionConfig;
 import android.hardware.neuralnetworks.ExecutionResult;
 import android.hardware.neuralnetworks.Request;
 
@@ -68,6 +69,8 @@
      *
      * Only a single execution on a given burst object may be active at any time.
      *
+     * Also see {@link IBurst::executeSynchronouslyWithConfig}.
+     *
      * @param request The input and output information on which the prepared model is to be
      *                executed.
      * @param memoryIdentifierTokens A list of tokens where each token is a non-negative number
@@ -78,10 +81,10 @@
      *                runs from the time the driver sees the call to the executeSynchronously
      *                function to the time the driver returns from the function.
      * @param deadlineNs The time by which the execution is expected to complete. The time is
-     *                   measured in nanoseconds since epoch of the steady clock (as from
-     *                   std::chrono::steady_clock). If the execution cannot be finished by the
-     *                   deadline, the execution may be aborted. Passing -1 means the deadline is
-     *                   omitted. Other negative values are invalid.
+     *                   measured in nanoseconds since boot (as from clock_gettime(CLOCK_BOOTTIME,
+     *                   &ts) or ::android::base::boot_clock). If the execution cannot be finished
+     *                   by the deadline, the execution may be aborted. Passing -1 means the
+     *                   deadline is omitted. Other negative values are invalid.
      * @param loopTimeoutDurationNs The maximum amount of time in nanoseconds that should be spent
      *                              executing a {@link OperationType::WHILE} operation. If a loop
      *                              condition model does not output false within this duration, the
@@ -117,4 +120,13 @@
      *     - INVALID_ARGUMENT if one of the input arguments is invalid
      */
     void releaseMemoryResource(in long memoryIdentifierToken);
+
+    /**
+     * For detailed specification, please refer to {@link IBurst::executeSynchronously}. The
+     * difference between the two methods is that executeSynchronouslyWithConfig takes {@link
+     * ExecutionConfig} instead of a list of configuration parameters, and ExecutionConfig contains
+     * more configuration parameters than are passed to executeSynchronously.
+     */
+    ExecutionResult executeSynchronouslyWithConfig(in Request request,
+            in long[] memoryIdentifierTokens, in ExecutionConfig config, in long deadlineNs);
 }
diff --git a/neuralnetworks/aidl/android/hardware/neuralnetworks/IDevice.aidl b/neuralnetworks/aidl/android/hardware/neuralnetworks/IDevice.aidl
index 72e2623..821b9fe 100644
--- a/neuralnetworks/aidl/android/hardware/neuralnetworks/IDevice.aidl
+++ b/neuralnetworks/aidl/android/hardware/neuralnetworks/IDevice.aidl
@@ -28,6 +28,7 @@
 import android.hardware.neuralnetworks.IPreparedModelParcel;
 import android.hardware.neuralnetworks.Model;
 import android.hardware.neuralnetworks.NumberOfCacheFiles;
+import android.hardware.neuralnetworks.PrepareModelConfig;
 import android.hardware.neuralnetworks.Priority;
 
 /**
@@ -148,7 +149,7 @@
      *
      * If the device reports that caching is not supported, the user may avoid calling
      * IDevice::prepareModelFromCache or providing cache file descriptors to
-     * IDevice::prepareModel.
+     * IDevice::prepareModel or IDevice::prepareModelWithConfig.
      *
      * @return NumberOfCacheFiles structure indicating how many files for model and data cache the
      *     driver needs to cache a single prepared model. It must be less than or equal to
@@ -302,6 +303,8 @@
      *
      * Multiple threads may call prepareModel on the same model concurrently.
      *
+     * Also see {@link IDevice::prepareModelWithConfig}.
+     *
      * @param model The model to be prepared for execution.
      * @param preference Indicates the intended execution behavior of a prepared model.
      * @param priority The priority of the prepared model relative to other prepared models owned by
@@ -403,17 +406,17 @@
      * @param modelCache A vector of file descriptors for the security-sensitive cache. The length
      *                   of the vector must match the numModelCache returned from
      *                   getNumberOfCacheFilesNeeded. The cache file descriptors will be provided in
-     *                   the same order as with prepareModel.
+     *                   the same order as with prepareModel or prepareModelWithConfig.
      * @param dataCache A vector of file descriptors for the constants' cache. The length of the
      *                  vector must match the numDataCache returned from
      *                  getNumberOfCacheFilesNeeded. The cache file descriptors will be provided in
-     *                  the same order as with prepareModel.
+     *                  the same order as with prepareModel or prepareModelWithConfig.
      * @param token A caching token of length BYTE_SIZE_OF_CACHE_TOKEN identifying the prepared
      *              model. It is the same token provided when saving the cache files with
-     *              prepareModel. Tokens should be chosen to have a low rate of collision for a
-     *              particular application. The driver cannot detect a collision; a collision will
-     *              result in a failed execution or in a successful execution that produces
-     *              incorrect output values.
+     *              prepareModel or prepareModelWithConfig. Tokens should be chosen to have a low
+     *              rate of collision for a particular application. The driver cannot detect a
+     *              collision; a collision will result in a failed execution or in a successful
+     *              execution that produces incorrect output values.
      * @param callback A callback object used to return the error status of preparing the model for
      *                 execution and the prepared model if successful, nullptr otherwise. The
      *                 callback object's notify function must be called exactly once, even if the
@@ -429,4 +432,28 @@
     void prepareModelFromCache(in long deadlineNs, in ParcelFileDescriptor[] modelCache,
             in ParcelFileDescriptor[] dataCache, in byte[] token,
             in IPreparedModelCallback callback);
+
+    /**
+     * For detailed specification, please refer to {@link IDevice::prepareModel}. The only
+     * difference between the two methods is that prepareModelWithConfig takes {@link
+     * PrepareModelConfig} instead of standalone configuration parameters, which allows vendor
+     * specific compilation metadata to be passed.
+     *
+     * @param model The model to be prepared for execution.
+     * @param config Configuration parameters to prepare the model.
+     * @param callback A callback object used to return the error status of preparing the model for
+     *                 execution and the prepared model if successful, nullptr otherwise. The
+     *                 callback object's notify function must be called exactly once, even if the
+     *                 model could not be prepared.
+     * @throws ServiceSpecificException with one of the following ErrorStatus values:
+     *     - DEVICE_UNAVAILABLE if driver is offline or busy
+     *     - GENERAL_FAILURE if there is an unspecified error
+     *     - INVALID_ARGUMENT if one of the input arguments related to preparing the model is
+     *       invalid
+     *     - MISSED_DEADLINE_* if the preparation is aborted because the model cannot be prepared by
+     *       the deadline
+     *     - RESOURCE_EXHAUSTED_* if the task was aborted by the driver
+     */
+    void prepareModelWithConfig(
+            in Model model, in PrepareModelConfig config, in IPreparedModelCallback callback);
 }
diff --git a/neuralnetworks/aidl/android/hardware/neuralnetworks/IExecution.aidl b/neuralnetworks/aidl/android/hardware/neuralnetworks/IExecution.aidl
new file mode 100644
index 0000000..3cb9c1a
--- /dev/null
+++ b/neuralnetworks/aidl/android/hardware/neuralnetworks/IExecution.aidl
@@ -0,0 +1,153 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.neuralnetworks;
+
+import android.hardware.neuralnetworks.ExecutionResult;
+import android.hardware.neuralnetworks.FencedExecutionResult;
+
+/**
+ * IExecution represents a reusable execution object with request and most other execution
+ * properties fixed. It is used to launch executions.
+ *
+ * At most one execution may occur on a reusable execution object at any given time, either by
+ * means of executeSynchronously or executeFenced.
+ *
+ * An IExecution object is used to control a set of executions on the same prepared model with
+ * the same request and properties. IExecution objects enable some optimizations:
+ * (1) An IExecution object can preserve resources between executions. For example, a driver can
+ *     map a memory object when the IExecution object is created and cache the mapping for reuse in
+ *     subsequent executions. Any cached resource can be released when the IExecution object is
+ *     destroyed.
+ * (2) Because an IExecution object may be used for at most one execution at a time, any transient
+ *     execution resources such as intermediate tensors can be allocated once when the IExecution
+ *     object is created and freed when the IExecution object is destroyed.
+ * (3) An IExecution object is created for a fixed request. This enables the implementation to apply
+ *     request-specific optimizations. For example, an implementation can avoid request validation
+ *     and conversions when the IExecution object is reused. An implementation may also choose to
+ *     specialize the dynamic tensor shapes in the IExecution object according to the request.
+ */
+@VintfStability
+interface IExecution {
+    /**
+     * Performs a synchronous execution on the reusable execution object.
+     *
+     * The execution is performed synchronously with respect to the caller. executeSynchronously
+     * must verify the inputs to the function are correct, and the usages of memory pools allocated
+     * by IDevice::allocate are valid. If there is an error, executeSynchronously must immediately
+     * return a service specific exception with the appropriate ErrorStatus value. If the inputs to
+     * the function are valid and there is no error, executeSynchronously must perform the
+     * execution, and must not return until the execution is complete.
+     *
+     * The caller must not change the content of any data object referenced by the 'request'
+     * provided in {@link IPreparedModel::createReusableExecution} (described by the
+     * {@link DataLocation} of a {@link RequestArgument}) until executeSynchronously returns.
+     * executeSynchronously must not change the content of any of the data objects corresponding to
+     * 'request' inputs.
+     *
+     * If the execution object was configured from a prepared model wherein all tensor operands have
+     * fully specified dimensions, and the inputs to the function are valid, and at execution time
+     * every operation's input operands have legal values, then the execution should complete
+     * successfully: there must be no failure unless the device itself is in a bad state.
+     *
+     * If the execution object was created with measureTiming being true and the execution is
+     * successful, the driver may report the timing information in the returning
+     * {@link ExecutionResult}. The duration runs from the time the driver sees the call to the time
+     * the driver returns from the function.
+     *
+     * executeSynchronously may be called with an optional deadline. If the execution is not able to
+     * be completed before the provided deadline, the execution may be aborted, and either
+     * {@link ErrorStatus::MISSED_DEADLINE_TRANSIENT} or {@link
+     * ErrorStatus::MISSED_DEADLINE_PERSISTENT} may be returned. The error due to an abort must be
+     * sent the same way as other errors, described above.
+     *
+     * @param deadlineNs The time by which the execution is expected to complete. The time is
+     *                   measured in nanoseconds since boot (as from clock_gettime(CLOCK_BOOTTIME,
+     *                   &ts) or ::android::base::boot_clock). If the execution cannot be finished
+     *                   by the deadline, the execution may be aborted. Passing -1 means the
+     *                   deadline is omitted. Other negative values are invalid.
+     * @return ExecutionResult parcelable, containing the status of the execution, output shapes
+     *     and timing information.
+     * @throws ServiceSpecificException with one of the following ErrorStatus values:
+     *     - DEVICE_UNAVAILABLE if driver is offline or busy
+     *     - GENERAL_FAILURE if there is an unspecified error
+     *     - INVALID_ARGUMENT if one of the input arguments is invalid
+     *     - MISSED_DEADLINE_* if the execution is aborted because it cannot be completed by the
+     *       deadline
+     *     - RESOURCE_EXHAUSTED_* if the task was aborted by the driver
+     */
+    ExecutionResult executeSynchronously(in long deadlineNs);
+
+    /**
+     * Launch a fenced asynchronous execution on the reusable execution object.
+     *
+     * The execution is performed asynchronously with respect to the caller. executeFenced must
+     * verify the inputs to the function are correct, and the usages of memory pools allocated by
+     * IDevice::allocate are valid. If there is an error, executeFenced must immediately return a
+     * service specific exception with the corresponding ErrorStatus. If the inputs to the function
+     * are valid and there is no error, executeFenced must dispatch an asynchronous task to perform
+     * the execution in the background, and immediately return a {@link FencedExecutionResult}
+     * containing two fields: a callback (which can be used by the client to query the duration and
+     * runtime error status) and a sync fence (which will be signaled once the execution is
+     * completed). If the task has finished before the call returns, syncFence file descriptor may
+     * be set to -1. The execution must wait for all the sync fences (if any) in waitFor to be
+     * signaled before starting the actual execution.
+     *
+     * When the asynchronous task has finished its execution, it must immediately signal the
+     * syncFence returned from the executeFenced call. After the syncFence is signaled, the task
+     * must not modify the content of any data object referenced by the 'request' provided in
+     * IPreparedModel::createReusableExecution (described by the {@link DataLocation} of a
+     * {@link RequestArgument}).
+     *
+     * executeFenced may be called with an optional deadline and an optional duration. If the
+     * execution is not able to be completed before the provided deadline or within the timeout
+     * duration (measured from when all sync fences in waitFor are signaled), whichever comes
+     * earlier, the execution may be aborted, and either
+     * {@link ErrorStatus::MISSED_DEADLINE_TRANSIENT} or {@link
+     * ErrorStatus::MISSED_DEADLINE_PERSISTENT} may be returned. The error due to an abort must be
+     * sent the same way as other errors, described above.
+     *
+     * If any of the sync fences in waitFor changes to error status after the executeFenced call
+     * succeeds, or the execution is aborted because it cannot finish before the deadline has been
+     * reached or the duration has elapsed, the driver must immediately set the returned syncFence
+     * to error status.
+     *
+     * @param waitFor A vector of sync fence file descriptors. Execution must not start until all
+     *                sync fences have been signaled.
+     * @param deadlineNs The time by which the execution is expected to complete. The time is
+     *                   measured in nanoseconds since boot (as from clock_gettime(CLOCK_BOOTTIME,
+     *                   &ts) or ::android::base::boot_clock). If the execution cannot be finished
+     *                   by the deadline, the execution may be aborted. Passing -1 means the
+     *                   deadline is omitted. Other negative values are invalid.
+     * @param durationNs The length of time in nanoseconds within which the execution is expected
+     *                   to complete after all sync fences in waitFor are signaled. If the
+     *                   execution cannot be finished within the duration, the execution may be
+     *                   aborted. Passing -1 means the duration is omitted. Other negative values
+     *                   are invalid.
+     * @return The FencedExecutionResult parcelable, containing IFencedExecutionCallback and the
+     *         sync fence.
+     * @throws ServiceSpecificException with one of the following ErrorStatus values:
+     *     - DEVICE_UNAVAILABLE if driver is offline or busy
+     *     - GENERAL_FAILURE if there is an unspecified error
+     *     - INVALID_ARGUMENT if one of the input arguments is invalid, including fences in error
+     *       states.
+     *     - MISSED_DEADLINE_* if the execution is aborted because it cannot be completed by the
+     *       deadline
+     *     - RESOURCE_EXHAUSTED_* if the task was aborted by the driver
+     */
+    FencedExecutionResult executeFenced(
+            in ParcelFileDescriptor[] waitFor, in long deadlineNs, in long durationNs);
+}
diff --git a/neuralnetworks/aidl/android/hardware/neuralnetworks/IPreparedModel.aidl b/neuralnetworks/aidl/android/hardware/neuralnetworks/IPreparedModel.aidl
index 956b626..949804e 100644
--- a/neuralnetworks/aidl/android/hardware/neuralnetworks/IPreparedModel.aidl
+++ b/neuralnetworks/aidl/android/hardware/neuralnetworks/IPreparedModel.aidl
@@ -18,9 +18,11 @@
 
 import android.hardware.common.NativeHandle;
 import android.hardware.neuralnetworks.ErrorStatus;
+import android.hardware.neuralnetworks.ExecutionConfig;
 import android.hardware.neuralnetworks.ExecutionResult;
 import android.hardware.neuralnetworks.FencedExecutionResult;
 import android.hardware.neuralnetworks.IBurst;
+import android.hardware.neuralnetworks.IExecution;
 import android.hardware.neuralnetworks.Request;
 
 /**
@@ -67,6 +69,8 @@
      * Any number of calls to the execute* functions, in any combination, may be made concurrently,
      * even on the same IPreparedModel object.
      *
+     * Also see {@link IPreparedModel::executeSynchronouslyWithConfig}.
+     *
      * @param request The input and output information on which the prepared model is to be
      *                executed.
      * @param measure Specifies whether or not to measure duration of the execution. The duration
@@ -105,11 +109,12 @@
      * IDevice::allocate are valid. If there is an error, executeFenced must immediately return a
      * service specific exception with the corresponding ErrorStatus. If the inputs to the function
      * are valid and there is no error, executeFenced must dispatch an asynchronous task to perform
-     * the execution in the background, assign a sync fence that will be signaled once the execution
-     * is completed and immediately return a callback that can be used by the client to query the
-     * duration and runtime error status. If the task has finished before the call returns,
-     * syncFence file descriptor may be set to -1. The execution must wait for all the sync fences
-     * (if any) in waitFor to be signaled before starting the actual execution.
+     * the execution in the background, and immediately return a {@link FencedExecutionResult}
+     * containing two fields: a callback (which can be used by the client to query the duration and
+     * runtime error status) and a sync fence (which will be signaled once the execution is
+     * completed). If the task has finished before the call returns, syncFence file descriptor may
+     * be set to -1. The execution must wait for all the sync fences (if any) in waitFor to be
+     * signaled before starting the actual execution.
      *
      * When the asynchronous task has finished its execution, it must immediately signal the
      * syncFence returned from the executeFenced call. After the syncFence is signaled, the task
@@ -132,6 +137,8 @@
      * Any number of calls to the execute* functions, in any combination, may be made concurrently,
      * even on the same IPreparedModel object.
      *
+     * Also see {@link IPreparedModel::executeFencedWithConfig}.
+     *
      * @param request The input and output information on which the prepared model is to be
      *                executed. The outputs in the request must have fully specified dimensions.
      * @param waitFor A vector of sync fence file descriptors. Execution must not start until all
@@ -186,4 +193,86 @@
      *     - RESOURCE_EXHAUSTED_* if the task was aborted by the driver
      */
     IBurst configureExecutionBurst();
+
+    /**
+     * Create a reusable execution object to launch multiple executions with the same request and
+     * properties.
+     *
+     * createReusableExecution must verify the inputs to the function are correct, and the usages of
+     * memory pools allocated by IDevice::allocate are valid. If there is an error,
+     * createReusableExecution must immediately return a service specific exception with the
+     * appropriate ErrorStatus value. If the inputs to the function are valid and there is no error,
+     * createReusableExecution must construct a reusable execution.
+     *
+     * @param request The input and output information on which the prepared model is to be
+     *                executed.
+     * @param config Specifies the execution configuration parameters.
+     * @return execution An IExecution object representing a reusable execution that has been
+     *                   specialized for a fixed request.
+     * @throws ServiceSpecificException with one of the following ErrorStatus values:
+     *     - DEVICE_UNAVAILABLE if driver is offline or busy
+     *     - GENERAL_FAILURE if there is an unspecified error
+     *     - INVALID_ARGUMENT if one of the input arguments is invalid
+     *     - RESOURCE_EXHAUSTED_* if the task was aborted by the driver
+     */
+    IExecution createReusableExecution(in Request request, in ExecutionConfig config);
+
+    /**
+     * For detailed specification, please refer to {@link IPreparedModel::executeSynchronously}. The
+     * difference between the two methods is that executeSynchronouslyWithConfig takes {@link
+     * ExecutionConfig} instead of a list of configuration parameters, and ExecutionConfig contains
+     * more configuration parameters than are passed to executeSynchronously.
+     *
+     * @param request The input and output information on which the prepared model is to be
+     *                executed.
+     * @param config Specifies the execution configuration parameters.
+     * @param deadlineNs The time by which the execution is expected to complete. The time is
+     *                   measured in nanoseconds since boot (as from clock_gettime(CLOCK_BOOTTIME,
+     *                   &ts) or ::android::base::boot_clock). If the execution cannot be finished
+     *                   by the deadline, the execution may be aborted. Passing -1 means the
+     *                   deadline is omitted. Other negative valueggs are invalid.
+     * @return ExecutionResult parcelable, containing the status of the execution, output shapes and
+     *     timing information.
+     *     - MISSED_DEADLINE_* if the execution is aborted because it cannot be completed by the
+     *       deadline
+     *     - RESOURCE_EXHAUSTED_* if the task was aborted by the driver
+     */
+    ExecutionResult executeSynchronouslyWithConfig(
+            in Request request, in ExecutionConfig config, in long deadlineNs);
+
+    /**
+     * For detailed specification, please refer to {@link IPreparedModel::executeFenced}. The
+     * difference between the two methods is that executeFencedWithConfig takes {@link
+     * ExecutionConfig} instead of a list of configuration parameters, and ExecutionConfig contains
+     * more configuration parameters than are passed to executeFenced.
+     *
+     * @param request The input and output information on which the prepared model is to be
+     *                executed. The outputs in the request must have fully specified dimensions.
+     * @param waitFor A vector of sync fence file descriptors. Execution must not start until all
+     *                sync fences have been signaled.
+     * @param config Specifies the execution configuration parameters.
+     * @param deadlineNs The time by which the execution is expected to complete. The time is
+     *                   measured in nanoseconds since boot (as from clock_gettime(CLOCK_BOOTTIME,
+     *                   &ts) or ::android::base::boot_clock). If the execution cannot be finished
+     *                   by the deadline, the execution may be aborted. Passing -1 means the
+     *                   deadline is omitted. Other negative values are invalid.
+     * @param durationNs The length of time in nanoseconds within which the execution is expected to
+     *                   complete after all sync fences in waitFor are signaled. If the execution
+     *                   cannot be finished within the duration, the execution may be aborted.
+     *                   Passing -1 means the duration is omitted. Other negative values are
+     *                   invalid.
+     * @return The FencedExecutionResult parcelable, containing IFencedExecutionCallback and the
+     *         sync fence.
+     * @throws ServiceSpecificException with one of the following ErrorStatus values:
+     *     - DEVICE_UNAVAILABLE if driver is offline or busy
+     *     - GENERAL_FAILURE if there is an unspecified error
+     *     - INVALID_ARGUMENT if one of the input arguments is invalid, including fences in error
+     *       states.
+     *     - MISSED_DEADLINE_* if the execution is aborted because it cannot be completed by the
+     *       deadline
+     *     - RESOURCE_EXHAUSTED_* if the task was aborted by the driver
+     */
+    FencedExecutionResult executeFencedWithConfig(in Request request,
+            in ParcelFileDescriptor[] waitFor, in ExecutionConfig config, in long deadlineNs,
+            in long durationNs);
 }
diff --git a/neuralnetworks/aidl/android/hardware/neuralnetworks/OperationType.aidl b/neuralnetworks/aidl/android/hardware/neuralnetworks/OperationType.aidl
index 0ad254d..5f7810b 100644
--- a/neuralnetworks/aidl/android/hardware/neuralnetworks/OperationType.aidl
+++ b/neuralnetworks/aidl/android/hardware/neuralnetworks/OperationType.aidl
@@ -5331,6 +5331,18 @@
     /**
      * Pads a tensor with mirrored values.
      *
+     * This operator specifies one of two padding modes: REFLECT or SYMMETRIC.
+     * In the case of REFLECT mode, the mirroring excludes the border element
+     * on the padding side.
+     * In the case of SYMMETRIC mode, the mirroring includes the border element
+     * on the padding side.
+     *
+     * For example, if the input is the 1-D tensor `[1, 2, 3]` and the padding
+     * is `[0, 2]` (i.e., pad no elements before the first (and only) dimension,
+     * and two elements after the first (and only) dimension), then:
+     *     - REFLECT mode produces the output `[1, 2, 3, 2, 1]`
+     *     - SYMMETRIC mode produces the output `[1, 2, 3, 3, 2]`
+     *
      * Supported tensor {@link OperandType}:
      * * {@link OperandType::TENSOR_FLOAT16}
      * * {@link OperandType::TENSOR_FLOAT32}
@@ -5349,6 +5361,11 @@
      *      front of dimension i.
      *      padding[i, 1] specifies the number of elements to be padded after the
      *      end of dimension i.
+     *      Each padding value must be nonnegative.
+     *      In the case of REFLECT mode, each padding value must be less than the
+     *      corresponding dimension.
+     *      In the case of SYMMETRIC mode, each padding value must be less than or
+     *      equal to the corresponding dimension.
      * * 2: An {@link OperandType::INT32} scalar, specifying the mode.
      *      Options are 0:REFLECT and 1:SYMMETRIC.
      *
diff --git a/neuralnetworks/aidl/android/hardware/neuralnetworks/PrepareModelConfig.aidl b/neuralnetworks/aidl/android/hardware/neuralnetworks/PrepareModelConfig.aidl
new file mode 100644
index 0000000..96df968
--- /dev/null
+++ b/neuralnetworks/aidl/android/hardware/neuralnetworks/PrepareModelConfig.aidl
@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.neuralnetworks;
+
+import android.hardware.neuralnetworks.ExecutionPreference;
+import android.hardware.neuralnetworks.ExtensionNameAndPrefix;
+import android.hardware.neuralnetworks.Priority;
+import android.hardware.neuralnetworks.TokenValuePair;
+
+/**
+ * A type that is used to represent all configuration needed to
+ * prepare a model.
+ */
+@VintfStability
+parcelable PrepareModelConfig {
+    /**
+     * Indicates the intended execution behavior of a prepared model.
+     */
+    ExecutionPreference preference;
+    /**
+     * The priority of the prepared model relative to other prepared
+     * models owned by the client.
+     */
+    Priority priority;
+    /**
+     * The time by which the model is expected to be prepared. The
+     * time is measured in nanoseconds since boot (as from
+     * clock_gettime(CLOCK_BOOTTIME, &ts) or
+     * ::android::base::boot_clock). If the model cannot be prepared
+     * by the deadline, the preparation may be aborted. Passing -1
+     * means the deadline is omitted. Other negative values are
+     * invalid.
+     */
+    long deadlineNs;
+    /**
+     * A vector of file descriptors for the security-sensitive cache.
+     * The length of the vector must either be 0 indicating that
+     * caching information is not provided, or match the
+     * numModelCache returned from IDevice::getNumberOfCacheFilesNeeded. The
+     * cache file descriptors will be provided in the same order when
+     * retrieving the preparedModel from cache files with
+     * IDevice::prepareModelFromCache.
+     */
+    ParcelFileDescriptor[] modelCache;
+    /**
+     * A vector of file descriptors for the constants' cache. The
+     * length of the vector must either be 0 indicating that caching
+     * information is not provided, or match the numDataCache
+     * returned from IDevice::getNumberOfCacheFilesNeeded. The cache file
+     * descriptors will be provided in the same order when retrieving
+     * the preparedModel from cache files with IDevice::prepareModelFromCache.
+     */
+    ParcelFileDescriptor[] dataCache;
+    /**
+     * A caching token of length IDevice::BYTE_SIZE_OF_CACHE_TOKEN identifying
+     * the prepared model. The same token will be provided when
+     * retrieving the prepared model from the cache files with
+     * IDevice::prepareModelFromCache.  Tokens should be chosen to have a low
+     * rate of collision for a particular application. The driver
+     * cannot detect a collision; a collision will result in a failed
+     * execution or in a successful execution that produces incorrect
+     * output values. If both modelCache and dataCache are empty
+     * indicating that caching information is not provided, this
+     * token must be ignored.
+     */
+    byte[] cacheToken;
+    /**
+     * A vector of token / value pairs represent vendor specific
+     * compilation hints or metadata. The provided TokenValuePairs must not
+     * contain the same token twice. The driver must validate the
+     * data and ignore invalid hints. It is up to the driver to
+     * decide whether to respect the provided hints or not.
+     */
+    TokenValuePair[] compilationHints;
+    /**
+     * The mapping between extension names and prefixes of token values.
+     * The driver must ignore the corresponding compilation hint, if
+     * the extension is not supported.
+     */
+    ExtensionNameAndPrefix[] extensionNameToPrefix;
+}
diff --git a/neuralnetworks/aidl/android/hardware/neuralnetworks/TokenValuePair.aidl b/neuralnetworks/aidl/android/hardware/neuralnetworks/TokenValuePair.aidl
new file mode 100644
index 0000000..ec665b4
--- /dev/null
+++ b/neuralnetworks/aidl/android/hardware/neuralnetworks/TokenValuePair.aidl
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.neuralnetworks;
+
+/**
+ * A type that is used to represent a token / byte array data pair.
+ */
+@VintfStability
+parcelable TokenValuePair {
+    /**
+     * A 32bit integer token. The token is created by combining the
+     * extension prefix and enum defined within the extension.
+     * The low {@link IDevice::EXTENSION_TYPE_LOW_BITS_TYPE} bits of the value
+     * correspond to the hint within the extension and the high
+     * {@link IDevice::EXTENSION_TYPE_HIGH_BITS_PREFIX} bits encode the "prefix", which maps
+     * uniquely to the extension name. The sign bit is always 0.
+     *
+     * For example, if a token value is 0x7AAA000B and the corresponding
+     * {@link ExtensionNameAndPrefix} contains an entry with prefix=0x7AAA and
+     * name="vendor.test.test_extension", then the token should be interpreted as the hint
+     * 0x000B of the extension named vendor.test.test_extension.
+     */
+    int token;
+    /**
+     * A byte array containing the raw data.
+     */
+    byte[] value;
+}
diff --git a/neuralnetworks/aidl/utils/Android.bp b/neuralnetworks/aidl/utils/Android.bp
index e356104..3faa613 100644
--- a/neuralnetworks/aidl/utils/Android.bp
+++ b/neuralnetworks/aidl/utils/Android.bp
@@ -26,7 +26,14 @@
 cc_defaults {
     name: "neuralnetworks_utils_hal_aidl_defaults",
     defaults: ["neuralnetworks_utils_defaults"],
-    srcs: ["src/*"],
+    srcs: [
+        // AIDL utils that a driver may depend on.
+        "src/BufferTracker.cpp",
+        "src/Conversions.cpp",
+        "src/HalUtils.cpp",
+        "src/Utils.cpp",
+        "src/ValidateHal.cpp",
+    ],
     local_include_dirs: ["include/nnapi/hal/aidl/"],
     export_include_dirs: ["include"],
     cflags: ["-Wthread-safety"],
@@ -47,6 +54,7 @@
     },
 }
 
+// Deprecated. Remove once all modules depending on this are migrated away.
 cc_library_static {
     name: "neuralnetworks_utils_hal_aidl_v1",
     defaults: ["neuralnetworks_utils_hal_aidl_defaults"],
@@ -56,19 +64,25 @@
 }
 
 cc_library_static {
-    name: "neuralnetworks_utils_hal_aidl_v2",
-    defaults: ["neuralnetworks_utils_hal_aidl_defaults"],
-    shared_libs: [
-        "android.hardware.neuralnetworks-V2-ndk",
-    ],
-}
-
-cc_library_static {
     name: "neuralnetworks_utils_hal_aidl",
     defaults: ["neuralnetworks_utils_hal_aidl_defaults"],
-    shared_libs: [
-        "android.hardware.neuralnetworks-V3-ndk",
+    srcs: [
+        // Additional AIDL utils for the runtime.
+        "src/Assertions.cpp",
+        "src/Buffer.cpp",
+        "src/Burst.cpp",
+        "src/Callbacks.cpp",
+        "src/Device.cpp",
+        "src/Execution.cpp",
+        "src/InvalidDevice.cpp",
+        "src/PreparedModel.cpp",
+        "src/ProtectCallback.cpp",
+        "src/Service.cpp",
     ],
+    shared_libs: [
+        "android.hardware.neuralnetworks-V4-ndk",
+    ],
+    cflags: ["-DNN_AIDL_V4_OR_ABOVE"],
 }
 
 // A cc_defaults that includes the latest non-experimental AIDL utilities and other AIDL libraries
@@ -79,9 +93,10 @@
     static_libs: [
         "android.hardware.common-V2-ndk",
         "android.hardware.graphics.common-V3-ndk",
-        "android.hardware.neuralnetworks-V3-ndk",
+        "android.hardware.neuralnetworks-V4-ndk",
         "neuralnetworks_utils_hal_aidl",
     ],
+    cflags: ["-DNN_AIDL_V4_OR_ABOVE"],
 }
 
 cc_test {
diff --git a/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Burst.h b/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Burst.h
index 0cc78d4..f2e6e75 100644
--- a/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Burst.h
+++ b/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Burst.h
@@ -86,10 +86,12 @@
                 GUARDED_BY(mMutex);
     };
 
+    // featureLevel is for testing purposes.
     static nn::GeneralResult<std::shared_ptr<const Burst>> create(
-            std::shared_ptr<aidl_hal::IBurst> burst);
+            std::shared_ptr<aidl_hal::IBurst> burst, nn::Version featureLevel);
 
-    Burst(PrivateConstructorTag tag, std::shared_ptr<aidl_hal::IBurst> burst);
+    Burst(PrivateConstructorTag tag, std::shared_ptr<aidl_hal::IBurst> burst,
+          nn::Version featureLevel);
 
     // See IBurst::cacheMemory for information.
     OptionalCacheHold cacheMemory(const nn::SharedMemory& memory) const override;
@@ -97,23 +99,29 @@
     // See IBurst::execute for information.
     nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> execute(
             const nn::Request& request, nn::MeasureTiming measure,
-            const nn::OptionalTimePoint& deadline,
-            const nn::OptionalDuration& loopTimeoutDuration) const override;
+            const nn::OptionalTimePoint& deadline, const nn::OptionalDuration& loopTimeoutDuration,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     // See IBurst::createReusableExecution for information.
     nn::GeneralResult<nn::SharedExecution> createReusableExecution(
             const nn::Request& request, nn::MeasureTiming measure,
-            const nn::OptionalDuration& loopTimeoutDuration) const override;
+            const nn::OptionalDuration& loopTimeoutDuration,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> executeInternal(
             const aidl_hal::Request& request, const std::vector<int64_t>& memoryIdentifierTokens,
             bool measure, int64_t deadline, int64_t loopTimeoutDuration,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix,
             const hal::utils::RequestRelocation& relocation) const;
 
   private:
     mutable std::atomic_flag mExecutionInFlight = ATOMIC_FLAG_INIT;
     const std::shared_ptr<aidl_hal::IBurst> kBurst;
     const std::shared_ptr<MemoryCache> kMemoryCache;
+    const nn::Version kFeatureLevel;
 };
 
 }  // namespace aidl::android::hardware::neuralnetworks::utils
diff --git a/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Callbacks.h b/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Callbacks.h
index 168264b..960be2b 100644
--- a/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Callbacks.h
+++ b/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Callbacks.h
@@ -36,6 +36,8 @@
   public:
     using Data = nn::GeneralResult<nn::SharedPreparedModel>;
 
+    PreparedModelCallback(nn::Version featureLevel) : kFeatureLevel(featureLevel) {}
+
     ndk::ScopedAStatus notify(ErrorStatus status,
                               const std::shared_ptr<IPreparedModel>& preparedModel) override;
 
@@ -44,6 +46,7 @@
     Data get();
 
   private:
+    const nn::Version kFeatureLevel;
     hal::utils::TransferValue<Data> mData;
 };
 
diff --git a/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Conversions.h b/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Conversions.h
index 78433a7..af58715 100644
--- a/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Conversions.h
+++ b/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Conversions.h
@@ -46,6 +46,10 @@
 #include <aidl/android/hardware/neuralnetworks/SymmPerChannelQuantParams.h>
 #include <aidl/android/hardware/neuralnetworks/Timing.h>
 
+#ifdef NN_AIDL_V4_OR_ABOVE
+#include <aidl/android/hardware/neuralnetworks/TokenValuePair.h>
+#endif  // NN_AIDL_V4_OR_ABOVE
+
 #include <android/binder_auto_utils.h>
 #include <nnapi/Result.h>
 #include <nnapi/Types.h>
@@ -74,7 +78,7 @@
         const aidl_hal::SymmPerChannelQuantParams& symmPerChannelQuantParams);
 GeneralResult<Operation> unvalidatedConvert(const aidl_hal::Operation& operation);
 GeneralResult<Model> unvalidatedConvert(const aidl_hal::Model& model);
-GeneralResult<Model::ExtensionNameAndPrefix> unvalidatedConvert(
+GeneralResult<ExtensionNameAndPrefix> unvalidatedConvert(
         const aidl_hal::ExtensionNameAndPrefix& extensionNameAndPrefix);
 GeneralResult<Model::OperandValues> unvalidatedConvert(const std::vector<uint8_t>& operandValues);
 GeneralResult<Model::Subgraph> unvalidatedConvert(const aidl_hal::Subgraph& subgraph);
@@ -97,6 +101,10 @@
         const aidl_hal::ExtensionOperandTypeInformation& operandTypeInformation);
 GeneralResult<SharedHandle> unvalidatedConvert(const ndk::ScopedFileDescriptor& handle);
 
+#ifdef NN_AIDL_V4_OR_ABOVE
+GeneralResult<TokenValuePair> unvalidatedConvert(const aidl_hal::TokenValuePair& tokenValuePair);
+#endif  // NN_AIDL_V4_OR_ABOVE
+
 GeneralResult<std::vector<Operation>> unvalidatedConvert(
         const std::vector<aidl_hal::Operation>& operations);
 
@@ -112,11 +120,23 @@
 GeneralResult<Request> convert(const aidl_hal::Request& request);
 GeneralResult<Timing> convert(const aidl_hal::Timing& timing);
 GeneralResult<SharedHandle> convert(const ndk::ScopedFileDescriptor& handle);
+GeneralResult<BufferDesc> convert(const aidl_hal::BufferDesc& bufferDesc);
 
 GeneralResult<std::vector<Extension>> convert(const std::vector<aidl_hal::Extension>& extension);
 GeneralResult<std::vector<SharedMemory>> convert(const std::vector<aidl_hal::Memory>& memories);
+GeneralResult<std::vector<ExtensionNameAndPrefix>> convert(
+        const std::vector<aidl_hal::ExtensionNameAndPrefix>& extensionNameAndPrefix);
+
+#ifdef NN_AIDL_V4_OR_ABOVE
+GeneralResult<std::vector<TokenValuePair>> convert(
+        const std::vector<aidl_hal::TokenValuePair>& metaData);
+#endif  // NN_AIDL_V4_OR_ABOVE
+
 GeneralResult<std::vector<OutputShape>> convert(
         const std::vector<aidl_hal::OutputShape>& outputShapes);
+GeneralResult<std::vector<SharedHandle>> convert(
+        const std::vector<ndk::ScopedFileDescriptor>& handles);
+GeneralResult<std::vector<BufferRole>> convert(const std::vector<aidl_hal::BufferRole>& roles);
 
 GeneralResult<std::vector<uint32_t>> toUnsigned(const std::vector<int32_t>& vec);
 
@@ -129,6 +149,7 @@
 nn::GeneralResult<std::vector<uint8_t>> unvalidatedConvert(const nn::CacheToken& cacheToken);
 nn::GeneralResult<BufferDesc> unvalidatedConvert(const nn::BufferDesc& bufferDesc);
 nn::GeneralResult<BufferRole> unvalidatedConvert(const nn::BufferRole& bufferRole);
+nn::GeneralResult<DeviceType> unvalidatedConvert(const nn::DeviceType& deviceType);
 nn::GeneralResult<bool> unvalidatedConvert(const nn::MeasureTiming& measureTiming);
 nn::GeneralResult<Memory> unvalidatedConvert(const nn::SharedMemory& memory);
 nn::GeneralResult<OutputShape> unvalidatedConvert(const nn::OutputShape& outputShape);
@@ -147,21 +168,27 @@
 nn::GeneralResult<std::vector<uint8_t>> unvalidatedConvert(
         const nn::Model::OperandValues& operandValues);
 nn::GeneralResult<ExtensionNameAndPrefix> unvalidatedConvert(
-        const nn::Model::ExtensionNameAndPrefix& extensionNameToPrefix);
+        const nn::ExtensionNameAndPrefix& extensionNameToPrefix);
 nn::GeneralResult<Model> unvalidatedConvert(const nn::Model& model);
 nn::GeneralResult<Priority> unvalidatedConvert(const nn::Priority& priority);
 nn::GeneralResult<Request> unvalidatedConvert(const nn::Request& request);
 nn::GeneralResult<RequestArgument> unvalidatedConvert(const nn::Request::Argument& requestArgument);
 nn::GeneralResult<RequestMemoryPool> unvalidatedConvert(const nn::Request::MemoryPool& memoryPool);
 nn::GeneralResult<Timing> unvalidatedConvert(const nn::Timing& timing);
-nn::GeneralResult<int64_t> unvalidatedConvert(const nn::Duration& duration);
 nn::GeneralResult<int64_t> unvalidatedConvert(const nn::OptionalDuration& optionalDuration);
 nn::GeneralResult<int64_t> unvalidatedConvert(const nn::OptionalTimePoint& optionalTimePoint);
 nn::GeneralResult<ndk::ScopedFileDescriptor> unvalidatedConvert(const nn::SyncFence& syncFence);
 nn::GeneralResult<ndk::ScopedFileDescriptor> unvalidatedConvert(const nn::SharedHandle& handle);
+nn::GeneralResult<Capabilities> unvalidatedConvert(const nn::Capabilities& capabilities);
+nn::GeneralResult<Extension> unvalidatedConvert(const nn::Extension& extension);
+
+#ifdef NN_AIDL_V4_OR_ABOVE
+nn::GeneralResult<TokenValuePair> unvalidatedConvert(const nn::TokenValuePair& tokenValuePair);
+#endif  // NN_AIDL_V4_OR_ABOVE
 
 nn::GeneralResult<std::vector<uint8_t>> convert(const nn::CacheToken& cacheToken);
 nn::GeneralResult<BufferDesc> convert(const nn::BufferDesc& bufferDesc);
+nn::GeneralResult<DeviceType> convert(const nn::DeviceType& deviceType);
 nn::GeneralResult<bool> convert(const nn::MeasureTiming& measureTiming);
 nn::GeneralResult<Memory> convert(const nn::SharedMemory& memory);
 nn::GeneralResult<ErrorStatus> convert(const nn::ErrorStatus& errorStatus);
@@ -172,6 +199,8 @@
 nn::GeneralResult<Timing> convert(const nn::Timing& timing);
 nn::GeneralResult<int64_t> convert(const nn::OptionalDuration& optionalDuration);
 nn::GeneralResult<int64_t> convert(const nn::OptionalTimePoint& optionalTimePoint);
+nn::GeneralResult<Capabilities> convert(const nn::Capabilities& capabilities);
+nn::GeneralResult<Extension> convert(const nn::Extension& extension);
 
 nn::GeneralResult<std::vector<BufferRole>> convert(const std::vector<nn::BufferRole>& bufferRoles);
 nn::GeneralResult<std::vector<OutputShape>> convert(
@@ -180,6 +209,14 @@
         const std::vector<nn::SharedHandle>& handles);
 nn::GeneralResult<std::vector<ndk::ScopedFileDescriptor>> convert(
         const std::vector<nn::SyncFence>& syncFences);
+nn::GeneralResult<std::vector<Extension>> convert(const std::vector<nn::Extension>& extensions);
+nn::GeneralResult<std::vector<ExtensionNameAndPrefix>> convert(
+        const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix);
+
+#ifdef NN_AIDL_V4_OR_ABOVE
+nn::GeneralResult<std::vector<TokenValuePair>> convert(
+        const std::vector<nn::TokenValuePair>& metaData);
+#endif  // NN_AIDL_V4_OR_ABOVE
 
 nn::GeneralResult<std::vector<int32_t>> toSigned(const std::vector<uint32_t>& vec);
 
diff --git a/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Device.h b/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Device.h
index d558f66..615c6de 100644
--- a/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Device.h
+++ b/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Device.h
@@ -42,6 +42,7 @@
     struct PrivateConstructorTag {};
 
   public:
+    // featureLevel is for testing purposes.
     static nn::GeneralResult<std::shared_ptr<const Device>> create(
             std::string name, std::shared_ptr<aidl_hal::IDevice> device, nn::Version featureLevel);
 
@@ -67,8 +68,9 @@
     nn::GeneralResult<nn::SharedPreparedModel> prepareModel(
             const nn::Model& model, nn::ExecutionPreference preference, nn::Priority priority,
             nn::OptionalTimePoint deadline, const std::vector<nn::SharedHandle>& modelCache,
-            const std::vector<nn::SharedHandle>& dataCache,
-            const nn::CacheToken& token) const override;
+            const std::vector<nn::SharedHandle>& dataCache, const nn::CacheToken& token,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     nn::GeneralResult<nn::SharedPreparedModel> prepareModelFromCache(
             nn::OptionalTimePoint deadline, const std::vector<nn::SharedHandle>& modelCache,
diff --git a/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Execution.h b/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Execution.h
index a77ea98..14802b9 100644
--- a/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Execution.h
+++ b/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Execution.h
@@ -17,6 +17,8 @@
 #ifndef ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_AIDL_UTILS_EXECUTION_H
 #define ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_AIDL_UTILS_EXECUTION_H
 
+#include <aidl/android/hardware/neuralnetworks/IExecution.h>
+
 #include <nnapi/IExecution.h>
 #include <nnapi/Result.h>
 #include <nnapi/Types.h>
@@ -33,17 +35,22 @@
 
 namespace aidl::android::hardware::neuralnetworks::utils {
 
-class Execution final : public nn::IExecution, public std::enable_shared_from_this<Execution> {
+// A reusable execution implementation with a cached Request, internally it is still passing the
+// request to the driver in every computation.
+class ExecutionWithCachedRequest final
+    : public nn::IExecution,
+      public std::enable_shared_from_this<ExecutionWithCachedRequest> {
     struct PrivateConstructorTag {};
 
   public:
-    static nn::GeneralResult<std::shared_ptr<const Execution>> create(
+    static nn::GeneralResult<std::shared_ptr<const ExecutionWithCachedRequest>> create(
             std::shared_ptr<const PreparedModel> preparedModel, Request request,
             hal::utils::RequestRelocation relocation, bool measure, int64_t loopTimeoutDuration);
 
-    Execution(PrivateConstructorTag tag, std::shared_ptr<const PreparedModel> preparedModel,
-              Request request, hal::utils::RequestRelocation relocation, bool measure,
-              int64_t loopTimeoutDuration);
+    ExecutionWithCachedRequest(PrivateConstructorTag tag,
+                               std::shared_ptr<const PreparedModel> preparedModel, Request request,
+                               hal::utils::RequestRelocation relocation, bool measure,
+                               int64_t loopTimeoutDuration);
 
     nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> compute(
             const nn::OptionalTimePoint& deadline) const override;
@@ -60,6 +67,30 @@
     const int64_t kLoopTimeoutDuration;
 };
 
+// A reusable execution implementation that is backed by an actual AIDL IExecution object.
+class Execution final : public nn::IExecution, public std::enable_shared_from_this<Execution> {
+    struct PrivateConstructorTag {};
+
+  public:
+    static nn::GeneralResult<std::shared_ptr<const Execution>> create(
+            std::shared_ptr<aidl_hal::IExecution> execution,
+            hal::utils::RequestRelocation relocation);
+
+    Execution(PrivateConstructorTag tag, std::shared_ptr<aidl_hal::IExecution> execution,
+              hal::utils::RequestRelocation relocation);
+
+    nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> compute(
+            const nn::OptionalTimePoint& deadline) const override;
+
+    nn::GeneralResult<std::pair<nn::SyncFence, nn::ExecuteFencedInfoCallback>> computeFenced(
+            const std::vector<nn::SyncFence>& waitFor, const nn::OptionalTimePoint& deadline,
+            const nn::OptionalDuration& timeoutDurationAfterFence) const override;
+
+  private:
+    const std::shared_ptr<aidl_hal::IExecution> kExecution;
+    const hal::utils::RequestRelocation kRelocation;
+};
+
 }  // namespace aidl::android::hardware::neuralnetworks::utils
 
 #endif  // ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_AIDL_UTILS_EXECUTION_H
diff --git a/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/HalInterfaces.h b/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/HalInterfaces.h
index 3fb443c..cacdc26 100644
--- a/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/HalInterfaces.h
+++ b/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/HalInterfaces.h
@@ -61,6 +61,13 @@
 #include <aidl/android/hardware/neuralnetworks/SymmPerChannelQuantParams.h>
 #include <aidl/android/hardware/neuralnetworks/Timing.h>
 
+#ifdef NN_AIDL_V4_OR_ABOVE
+#include <aidl/android/hardware/neuralnetworks/BnExecution.h>
+#include <aidl/android/hardware/neuralnetworks/ExecutionConfig.h>
+#include <aidl/android/hardware/neuralnetworks/IExecution.h>
+#include <aidl/android/hardware/neuralnetworks/PrepareModelConfig.h>
+#endif  // NN_AIDL_V4_OR_ABOVE
+
 namespace android::nn {
 
 namespace aidl_hal = ::aidl::android::hardware::neuralnetworks;
diff --git a/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/InvalidDevice.h b/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/InvalidDevice.h
index e66507a..9375c1d 100644
--- a/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/InvalidDevice.h
+++ b/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/InvalidDevice.h
@@ -53,6 +53,9 @@
             const std::vector<ndk::ScopedFileDescriptor>& dataCache,
             const std::vector<uint8_t>& token,
             const std::shared_ptr<IPreparedModelCallback>& callback) override;
+    ndk::ScopedAStatus prepareModelWithConfig(
+            const Model& model, const PrepareModelConfig& config,
+            const std::shared_ptr<IPreparedModelCallback>& callback) override;
     ndk::ScopedAStatus prepareModelFromCache(
             int64_t deadline, const std::vector<ndk::ScopedFileDescriptor>& modelCache,
             const std::vector<ndk::ScopedFileDescriptor>& dataCache,
diff --git a/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/PreparedModel.h b/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/PreparedModel.h
index 4035764..cb6a85b 100644
--- a/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/PreparedModel.h
+++ b/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/PreparedModel.h
@@ -40,26 +40,33 @@
     struct PrivateConstructorTag {};
 
   public:
+    // featureLevel is for testing purposes.
     static nn::GeneralResult<std::shared_ptr<const PreparedModel>> create(
-            std::shared_ptr<aidl_hal::IPreparedModel> preparedModel);
+            std::shared_ptr<aidl_hal::IPreparedModel> preparedModel, nn::Version featureLevel);
 
     PreparedModel(PrivateConstructorTag tag,
-                  std::shared_ptr<aidl_hal::IPreparedModel> preparedModel);
+                  std::shared_ptr<aidl_hal::IPreparedModel> preparedModel,
+                  nn::Version featureLevel);
 
     nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> execute(
             const nn::Request& request, nn::MeasureTiming measure,
-            const nn::OptionalTimePoint& deadline,
-            const nn::OptionalDuration& loopTimeoutDuration) const override;
+            const nn::OptionalTimePoint& deadline, const nn::OptionalDuration& loopTimeoutDuration,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     nn::GeneralResult<std::pair<nn::SyncFence, nn::ExecuteFencedInfoCallback>> executeFenced(
             const nn::Request& request, const std::vector<nn::SyncFence>& waitFor,
             nn::MeasureTiming measure, const nn::OptionalTimePoint& deadline,
             const nn::OptionalDuration& loopTimeoutDuration,
-            const nn::OptionalDuration& timeoutDurationAfterFence) const override;
+            const nn::OptionalDuration& timeoutDurationAfterFence,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     nn::GeneralResult<nn::SharedExecution> createReusableExecution(
             const nn::Request& request, nn::MeasureTiming measure,
-            const nn::OptionalDuration& loopTimeoutDuration) const override;
+            const nn::OptionalDuration& loopTimeoutDuration,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     nn::GeneralResult<nn::SharedBurst> configureExecutionBurst() const override;
 
@@ -67,6 +74,8 @@
 
     nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> executeInternal(
             const Request& request, bool measure, int64_t deadline, int64_t loopTimeoutDuration,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix,
             const hal::utils::RequestRelocation& relocation) const;
 
     nn::GeneralResult<std::pair<nn::SyncFence, nn::ExecuteFencedInfoCallback>>
@@ -74,10 +83,13 @@
                           const std::vector<ndk::ScopedFileDescriptor>& waitFor, bool measure,
                           int64_t deadline, int64_t loopTimeoutDuration,
                           int64_t timeoutDurationAfterFence,
+                          const std::vector<nn::TokenValuePair>& hints,
+                          const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix,
                           const hal::utils::RequestRelocation& relocation) const;
 
   private:
     const std::shared_ptr<aidl_hal::IPreparedModel> kPreparedModel;
+    const nn::Version kFeatureLevel;
 };
 
 }  // namespace aidl::android::hardware::neuralnetworks::utils
diff --git a/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Utils.h b/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Utils.h
index a27487e..beca38b 100644
--- a/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Utils.h
+++ b/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Utils.h
@@ -38,6 +38,8 @@
             return nn::kVersionFeatureLevel6;
         case 3:
             return nn::kVersionFeatureLevel7;
+        case 4:
+            return nn::kVersionFeatureLevel8;
         default:
             return std::nullopt;
     }
diff --git a/neuralnetworks/aidl/utils/src/Burst.cpp b/neuralnetworks/aidl/utils/src/Burst.cpp
index fb00b26..6c7aa88 100644
--- a/neuralnetworks/aidl/utils/src/Burst.cpp
+++ b/neuralnetworks/aidl/utils/src/Burst.cpp
@@ -43,12 +43,16 @@
     static nn::GeneralResult<std::shared_ptr<const BurstExecution>> create(
             std::shared_ptr<const Burst> burst, Request request,
             std::vector<int64_t> memoryIdentifierTokens, bool measure, int64_t loopTimeoutDuration,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix,
             hal::utils::RequestRelocation relocation,
             std::vector<Burst::OptionalCacheHold> cacheHolds);
 
     BurstExecution(PrivateConstructorTag tag, std::shared_ptr<const Burst> burst, Request request,
                    std::vector<int64_t> memoryIdentifierTokens, bool measure,
-                   int64_t loopTimeoutDuration, hal::utils::RequestRelocation relocation,
+                   int64_t loopTimeoutDuration, const std::vector<nn::TokenValuePair>& hints,
+                   const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix,
+                   hal::utils::RequestRelocation relocation,
                    std::vector<Burst::OptionalCacheHold> cacheHolds);
 
     nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> compute(
@@ -64,6 +68,8 @@
     const std::vector<int64_t> kMemoryIdentifierTokens;
     const bool kMeasure;
     const int64_t kLoopTimeoutDuration;
+    const std::vector<nn::TokenValuePair> kHints;
+    const std::vector<nn::ExtensionNameAndPrefix> kExtensionNameToPrefix;
     const hal::utils::RequestRelocation kRelocation;
     const std::vector<Burst::OptionalCacheHold> kCacheHolds;
 };
@@ -149,17 +155,20 @@
 }
 
 nn::GeneralResult<std::shared_ptr<const Burst>> Burst::create(
-        std::shared_ptr<aidl_hal::IBurst> burst) {
+        std::shared_ptr<aidl_hal::IBurst> burst, nn::Version featureLevel) {
     if (burst == nullptr) {
         return NN_ERROR(nn::ErrorStatus::GENERAL_FAILURE)
                << "aidl_hal::utils::Burst::create must have non-null burst";
     }
 
-    return std::make_shared<const Burst>(PrivateConstructorTag{}, std::move(burst));
+    return std::make_shared<const Burst>(PrivateConstructorTag{}, std::move(burst), featureLevel);
 }
 
-Burst::Burst(PrivateConstructorTag /*tag*/, std::shared_ptr<aidl_hal::IBurst> burst)
-    : kBurst(std::move(burst)), kMemoryCache(std::make_shared<MemoryCache>(kBurst)) {
+Burst::Burst(PrivateConstructorTag /*tag*/, std::shared_ptr<aidl_hal::IBurst> burst,
+             nn::Version featureLevel)
+    : kBurst(std::move(burst)),
+      kMemoryCache(std::make_shared<MemoryCache>(kBurst)),
+      kFeatureLevel(featureLevel) {
     CHECK(kBurst != nullptr);
 }
 
@@ -170,8 +179,9 @@
 
 nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> Burst::execute(
         const nn::Request& request, nn::MeasureTiming measure,
-        const nn::OptionalTimePoint& deadline,
-        const nn::OptionalDuration& loopTimeoutDuration) const {
+        const nn::OptionalTimePoint& deadline, const nn::OptionalDuration& loopTimeoutDuration,
+        const std::vector<nn::TokenValuePair>& hints,
+        const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const {
     // Ensure that request is ready for IPC.
     std::optional<nn::Request> maybeRequestInShared;
     hal::utils::RequestRelocation relocation;
@@ -200,14 +210,14 @@
         memoryIdentifierTokens.push_back(-1);
     }
     CHECK_EQ(requestInShared.pools.size(), memoryIdentifierTokens.size());
-
     return executeInternal(aidlRequest, memoryIdentifierTokens, aidlMeasure, aidlDeadline,
-                           aidlLoopTimeoutDuration, relocation);
+                           aidlLoopTimeoutDuration, hints, extensionNameToPrefix, relocation);
 }
 
 nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> Burst::executeInternal(
         const Request& request, const std::vector<int64_t>& memoryIdentifierTokens, bool measure,
-        int64_t deadline, int64_t loopTimeoutDuration,
+        int64_t deadline, int64_t loopTimeoutDuration, const std::vector<nn::TokenValuePair>& hints,
+        const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix,
         const hal::utils::RequestRelocation& relocation) const {
     // Ensure that at most one execution is in flight at any given time.
     const bool alreadyInFlight = mExecutionInFlight.test_and_set();
@@ -221,9 +231,21 @@
     }
 
     ExecutionResult executionResult;
-    const auto ret = kBurst->executeSynchronously(request, memoryIdentifierTokens, measure,
-                                                  deadline, loopTimeoutDuration, &executionResult);
-    HANDLE_ASTATUS(ret) << "execute failed";
+    if (kFeatureLevel.level >= nn::Version::Level::FEATURE_LEVEL_8) {
+        auto aidlHints = NN_TRY(convert(hints));
+        auto aidlExtensionPrefix = NN_TRY(convert(extensionNameToPrefix));
+        const auto ret = kBurst->executeSynchronouslyWithConfig(
+                request, memoryIdentifierTokens,
+                {measure, loopTimeoutDuration, std::move(aidlHints),
+                 std::move(aidlExtensionPrefix)},
+                deadline, &executionResult);
+        HANDLE_ASTATUS(ret) << "execute failed";
+    } else {
+        const auto ret =
+                kBurst->executeSynchronously(request, memoryIdentifierTokens, measure, deadline,
+                                             loopTimeoutDuration, &executionResult);
+        HANDLE_ASTATUS(ret) << "execute failed";
+    }
     if (!executionResult.outputSufficientSize) {
         auto canonicalOutputShapes =
                 nn::convert(executionResult.outputShapes).value_or(std::vector<nn::OutputShape>{});
@@ -241,7 +263,9 @@
 
 nn::GeneralResult<nn::SharedExecution> Burst::createReusableExecution(
         const nn::Request& request, nn::MeasureTiming measure,
-        const nn::OptionalDuration& loopTimeoutDuration) const {
+        const nn::OptionalDuration& loopTimeoutDuration,
+        const std::vector<nn::TokenValuePair>& hints,
+        const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const {
     // Ensure that request is ready for IPC.
     std::optional<nn::Request> maybeRequestInShared;
     hal::utils::RequestRelocation relocation;
@@ -272,12 +296,15 @@
 
     return BurstExecution::create(shared_from_this(), std::move(aidlRequest),
                                   std::move(memoryIdentifierTokens), aidlMeasure,
-                                  aidlLoopTimeoutDuration, std::move(relocation), std::move(holds));
+                                  aidlLoopTimeoutDuration, hints, extensionNameToPrefix,
+                                  std::move(relocation), std::move(holds));
 }
 
 nn::GeneralResult<std::shared_ptr<const BurstExecution>> BurstExecution::create(
         std::shared_ptr<const Burst> burst, Request request,
         std::vector<int64_t> memoryIdentifierTokens, bool measure, int64_t loopTimeoutDuration,
+        const std::vector<nn::TokenValuePair>& hints,
+        const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix,
         hal::utils::RequestRelocation relocation,
         std::vector<Burst::OptionalCacheHold> cacheHolds) {
     if (burst == nullptr) {
@@ -286,13 +313,15 @@
 
     return std::make_shared<const BurstExecution>(
             PrivateConstructorTag{}, std::move(burst), std::move(request),
-            std::move(memoryIdentifierTokens), measure, loopTimeoutDuration, std::move(relocation),
-            std::move(cacheHolds));
+            std::move(memoryIdentifierTokens), measure, loopTimeoutDuration, hints,
+            extensionNameToPrefix, std::move(relocation), std::move(cacheHolds));
 }
 
 BurstExecution::BurstExecution(PrivateConstructorTag /*tag*/, std::shared_ptr<const Burst> burst,
                                Request request, std::vector<int64_t> memoryIdentifierTokens,
                                bool measure, int64_t loopTimeoutDuration,
+                               const std::vector<nn::TokenValuePair>& hints,
+                               const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix,
                                hal::utils::RequestRelocation relocation,
                                std::vector<Burst::OptionalCacheHold> cacheHolds)
     : kBurst(std::move(burst)),
@@ -300,6 +329,8 @@
       kMemoryIdentifierTokens(std::move(memoryIdentifierTokens)),
       kMeasure(measure),
       kLoopTimeoutDuration(loopTimeoutDuration),
+      kHints(hints),
+      kExtensionNameToPrefix(extensionNameToPrefix),
       kRelocation(std::move(relocation)),
       kCacheHolds(std::move(cacheHolds)) {}
 
@@ -307,7 +338,8 @@
         const nn::OptionalTimePoint& deadline) const {
     const auto aidlDeadline = NN_TRY(convert(deadline));
     return kBurst->executeInternal(kRequest, kMemoryIdentifierTokens, kMeasure, aidlDeadline,
-                                   kLoopTimeoutDuration, kRelocation);
+                                   kLoopTimeoutDuration, kHints, kExtensionNameToPrefix,
+                                   kRelocation);
 }
 
 nn::GeneralResult<std::pair<nn::SyncFence, nn::ExecuteFencedInfoCallback>>
diff --git a/neuralnetworks/aidl/utils/src/Callbacks.cpp b/neuralnetworks/aidl/utils/src/Callbacks.cpp
index 8084970..554f3fa 100644
--- a/neuralnetworks/aidl/utils/src/Callbacks.cpp
+++ b/neuralnetworks/aidl/utils/src/Callbacks.cpp
@@ -38,16 +38,17 @@
 // nn::kVersionFeatureLevel5. On failure, this function returns with the appropriate
 // nn::GeneralError.
 nn::GeneralResult<nn::SharedPreparedModel> prepareModelCallback(
-        ErrorStatus status, const std::shared_ptr<IPreparedModel>& preparedModel) {
+        ErrorStatus status, const std::shared_ptr<IPreparedModel>& preparedModel,
+        nn::Version featureLevel) {
     HANDLE_STATUS_AIDL(status) << "model preparation failed with " << toString(status);
-    return NN_TRY(PreparedModel::create(preparedModel));
+    return NN_TRY(PreparedModel::create(preparedModel, featureLevel));
 }
 
 }  // namespace
 
 ndk::ScopedAStatus PreparedModelCallback::notify(
         ErrorStatus status, const std::shared_ptr<IPreparedModel>& preparedModel) {
-    mData.put(prepareModelCallback(status, preparedModel));
+    mData.put(prepareModelCallback(status, preparedModel, kFeatureLevel));
     return ndk::ScopedAStatus::ok();
 }
 
diff --git a/neuralnetworks/aidl/utils/src/Conversions.cpp b/neuralnetworks/aidl/utils/src/Conversions.cpp
index 45628c8..eb28db7 100644
--- a/neuralnetworks/aidl/utils/src/Conversions.cpp
+++ b/neuralnetworks/aidl/utils/src/Conversions.cpp
@@ -302,9 +302,9 @@
     };
 }
 
-GeneralResult<Model::ExtensionNameAndPrefix> unvalidatedConvert(
+GeneralResult<ExtensionNameAndPrefix> unvalidatedConvert(
         const aidl_hal::ExtensionNameAndPrefix& extensionNameAndPrefix) {
-    return Model::ExtensionNameAndPrefix{
+    return ExtensionNameAndPrefix{
             .name = extensionNameAndPrefix.name,
             .prefix = extensionNameAndPrefix.prefix,
     };
@@ -506,6 +506,12 @@
     return std::make_shared<const Handle>(std::move(duplicatedFd));
 }
 
+#ifdef NN_AIDL_V4_OR_ABOVE
+GeneralResult<TokenValuePair> unvalidatedConvert(const aidl_hal::TokenValuePair& tokenValuePair) {
+    return TokenValuePair{.token = tokenValuePair.token, .value = tokenValuePair.value};
+}
+#endif  // NN_AIDL_V4_OR_ABOVE
+
 GeneralResult<Capabilities> convert(const aidl_hal::Capabilities& capabilities) {
     return validatedConvert(capabilities);
 }
@@ -551,6 +557,10 @@
     return validatedConvert(handle);
 }
 
+GeneralResult<BufferDesc> convert(const aidl_hal::BufferDesc& bufferDesc) {
+    return validatedConvert(bufferDesc);
+}
+
 GeneralResult<std::vector<Extension>> convert(const std::vector<aidl_hal::Extension>& extension) {
     return validatedConvert(extension);
 }
@@ -558,12 +568,32 @@
 GeneralResult<std::vector<SharedMemory>> convert(const std::vector<aidl_hal::Memory>& memories) {
     return validatedConvert(memories);
 }
+GeneralResult<std::vector<ExtensionNameAndPrefix>> convert(
+        const std::vector<aidl_hal::ExtensionNameAndPrefix>& extensionNameAndPrefix) {
+    return unvalidatedConvert(extensionNameAndPrefix);
+}
+
+#ifdef NN_AIDL_V4_OR_ABOVE
+GeneralResult<std::vector<TokenValuePair>> convert(
+        const std::vector<aidl_hal::TokenValuePair>& metaData) {
+    return validatedConvert(metaData);
+}
+#endif  // NN_AIDL_V4_OR_ABOVE
 
 GeneralResult<std::vector<OutputShape>> convert(
         const std::vector<aidl_hal::OutputShape>& outputShapes) {
     return validatedConvert(outputShapes);
 }
 
+GeneralResult<std::vector<SharedHandle>> convert(
+        const std::vector<ndk::ScopedFileDescriptor>& handles) {
+    return validatedConvert(handles);
+}
+
+GeneralResult<std::vector<BufferRole>> convert(const std::vector<aidl_hal::BufferRole>& roles) {
+    return validatedConvert(roles);
+}
+
 GeneralResult<std::vector<uint32_t>> toUnsigned(const std::vector<int32_t>& vec) {
     if (!std::all_of(vec.begin(), vec.end(), [](int32_t v) { return v >= 0; })) {
         return NN_ERROR() << "Negative value passed to conversion from signed to unsigned";
@@ -576,42 +606,7 @@
 namespace aidl::android::hardware::neuralnetworks::utils {
 namespace {
 
-template <typename Input>
-using UnvalidatedConvertOutput =
-        std::decay_t<decltype(unvalidatedConvert(std::declval<Input>()).value())>;
-
-template <typename Type>
-nn::GeneralResult<std::vector<UnvalidatedConvertOutput<Type>>> unvalidatedConvertVec(
-        const std::vector<Type>& arguments) {
-    std::vector<UnvalidatedConvertOutput<Type>> halObject;
-    halObject.reserve(arguments.size());
-    for (const auto& argument : arguments) {
-        halObject.push_back(NN_TRY(unvalidatedConvert(argument)));
-    }
-    return halObject;
-}
-
-template <typename Type>
-nn::GeneralResult<std::vector<UnvalidatedConvertOutput<Type>>> unvalidatedConvert(
-        const std::vector<Type>& arguments) {
-    return unvalidatedConvertVec(arguments);
-}
-
-template <typename Type>
-nn::GeneralResult<UnvalidatedConvertOutput<Type>> validatedConvert(const Type& canonical) {
-    NN_TRY(compliantVersion(canonical));
-    return utils::unvalidatedConvert(canonical);
-}
-
-template <typename Type>
-nn::GeneralResult<std::vector<UnvalidatedConvertOutput<Type>>> validatedConvert(
-        const std::vector<Type>& arguments) {
-    std::vector<UnvalidatedConvertOutput<Type>> halObject(arguments.size());
-    for (size_t i = 0; i < arguments.size(); ++i) {
-        halObject[i] = NN_TRY(validatedConvert(arguments[i]));
-    }
-    return halObject;
-}
+using utils::unvalidatedConvert;
 
 // Helper template for std::visit
 template <class... Ts>
@@ -721,6 +716,74 @@
             operator nn::GeneralResult<Memory>();
 }
 
+nn::GeneralResult<PerformanceInfo> unvalidatedConvert(
+        const nn::Capabilities::PerformanceInfo& info) {
+    return PerformanceInfo{.execTime = info.execTime, .powerUsage = info.powerUsage};
+}
+
+nn::GeneralResult<OperandPerformance> unvalidatedConvert(
+        const nn::Capabilities::OperandPerformance& operandPerformance) {
+    return OperandPerformance{.type = NN_TRY(unvalidatedConvert(operandPerformance.type)),
+                              .info = NN_TRY(unvalidatedConvert(operandPerformance.info))};
+}
+
+nn::GeneralResult<std::vector<OperandPerformance>> unvalidatedConvert(
+        const nn::Capabilities::OperandPerformanceTable& table) {
+    std::vector<OperandPerformance> operandPerformances;
+    operandPerformances.reserve(table.asVector().size());
+    for (const auto& operandPerformance : table.asVector()) {
+        operandPerformances.push_back(NN_TRY(unvalidatedConvert(operandPerformance)));
+    }
+    return operandPerformances;
+}
+
+nn::GeneralResult<ExtensionOperandTypeInformation> unvalidatedConvert(
+        const nn::Extension::OperandTypeInformation& info) {
+    return ExtensionOperandTypeInformation{.type = info.type,
+                                           .isTensor = info.isTensor,
+                                           .byteSize = static_cast<int32_t>(info.byteSize)};
+}
+
+nn::GeneralResult<int64_t> unvalidatedConvert(const nn::Duration& duration) {
+    if (duration < nn::Duration::zero()) {
+        return NN_ERROR() << "Unable to convert invalid (negative) duration";
+    }
+    constexpr std::chrono::nanoseconds::rep kIntMax = std::numeric_limits<int64_t>::max();
+    const auto count = duration.count();
+    return static_cast<int64_t>(std::min(count, kIntMax));
+}
+
+template <typename Input>
+using UnvalidatedConvertOutput =
+        std::decay_t<decltype(unvalidatedConvert(std::declval<Input>()).value())>;
+
+template <typename Type>
+nn::GeneralResult<std::vector<UnvalidatedConvertOutput<Type>>> unvalidatedConvert(
+        const std::vector<Type>& arguments) {
+    std::vector<UnvalidatedConvertOutput<Type>> halObject;
+    halObject.reserve(arguments.size());
+    for (const auto& argument : arguments) {
+        halObject.push_back(NN_TRY(unvalidatedConvert(argument)));
+    }
+    return halObject;
+}
+
+template <typename Type>
+nn::GeneralResult<UnvalidatedConvertOutput<Type>> validatedConvert(const Type& canonical) {
+    NN_TRY(compliantVersion(canonical));
+    return utils::unvalidatedConvert(canonical);
+}
+
+template <typename Type>
+nn::GeneralResult<std::vector<UnvalidatedConvertOutput<Type>>> validatedConvert(
+        const std::vector<Type>& arguments) {
+    std::vector<UnvalidatedConvertOutput<Type>> halObject(arguments.size());
+    for (size_t i = 0; i < arguments.size(); ++i) {
+        halObject[i] = NN_TRY(validatedConvert(arguments[i]));
+    }
+    return halObject;
+}
+
 }  // namespace
 
 nn::GeneralResult<std::vector<uint8_t>> unvalidatedConvert(const nn::CacheToken& cacheToken) {
@@ -743,6 +806,19 @@
     };
 }
 
+nn::GeneralResult<DeviceType> unvalidatedConvert(const nn::DeviceType& deviceType) {
+    switch (deviceType) {
+        case nn::DeviceType::UNKNOWN:
+            break;
+        case nn::DeviceType::OTHER:
+        case nn::DeviceType::CPU:
+        case nn::DeviceType::GPU:
+        case nn::DeviceType::ACCELERATOR:
+            return static_cast<DeviceType>(deviceType);
+    }
+    return NN_ERROR() << "Invalid DeviceType " << deviceType;
+}
+
 nn::GeneralResult<bool> unvalidatedConvert(const nn::MeasureTiming& measureTiming) {
     return measureTiming == nn::MeasureTiming::YES;
 }
@@ -883,7 +959,7 @@
 }
 
 nn::GeneralResult<ExtensionNameAndPrefix> unvalidatedConvert(
-        const nn::Model::ExtensionNameAndPrefix& extensionNameToPrefix) {
+        const nn::ExtensionNameAndPrefix& extensionNameToPrefix) {
     return ExtensionNameAndPrefix{
             .name = extensionNameToPrefix.name,
             .prefix = extensionNameToPrefix.prefix,
@@ -956,15 +1032,6 @@
     };
 }
 
-nn::GeneralResult<int64_t> unvalidatedConvert(const nn::Duration& duration) {
-    if (duration < nn::Duration::zero()) {
-        return NN_ERROR() << "Unable to convert invalid (negative) duration";
-    }
-    constexpr std::chrono::nanoseconds::rep kIntMax = std::numeric_limits<int64_t>::max();
-    const auto count = duration.count();
-    return static_cast<int64_t>(std::min(count, kIntMax));
-}
-
 nn::GeneralResult<int64_t> unvalidatedConvert(const nn::OptionalDuration& optionalDuration) {
     if (!optionalDuration.has_value()) {
         return kNoTiming;
@@ -989,6 +1056,28 @@
     return ndk::ScopedFileDescriptor(duplicatedFd.release());
 }
 
+nn::GeneralResult<Capabilities> unvalidatedConvert(const nn::Capabilities& capabilities) {
+    return Capabilities{
+            .relaxedFloat32toFloat16PerformanceTensor = NN_TRY(
+                    unvalidatedConvert(capabilities.relaxedFloat32toFloat16PerformanceTensor)),
+            .relaxedFloat32toFloat16PerformanceScalar = NN_TRY(
+                    unvalidatedConvert(capabilities.relaxedFloat32toFloat16PerformanceScalar)),
+            .operandPerformance = NN_TRY(unvalidatedConvert(capabilities.operandPerformance)),
+            .ifPerformance = NN_TRY(unvalidatedConvert(capabilities.ifPerformance)),
+            .whilePerformance = NN_TRY(unvalidatedConvert(capabilities.whilePerformance)),
+    };
+}
+
+nn::GeneralResult<Extension> unvalidatedConvert(const nn::Extension& extension) {
+    return Extension{.name = extension.name,
+                     .operandTypes = NN_TRY(unvalidatedConvert(extension.operandTypes))};
+}
+#ifdef NN_AIDL_V4_OR_ABOVE
+nn::GeneralResult<TokenValuePair> unvalidatedConvert(const nn::TokenValuePair& tokenValuePair) {
+    return TokenValuePair{.token = tokenValuePair.token, .value = tokenValuePair.value};
+}
+#endif  // NN_AIDL_V4_OR_ABOVE
+
 nn::GeneralResult<std::vector<uint8_t>> convert(const nn::CacheToken& cacheToken) {
     return validatedConvert(cacheToken);
 }
@@ -997,6 +1086,10 @@
     return validatedConvert(bufferDesc);
 }
 
+nn::GeneralResult<DeviceType> convert(const nn::DeviceType& deviceType) {
+    return validatedConvert(deviceType);
+}
+
 nn::GeneralResult<bool> convert(const nn::MeasureTiming& measureTiming) {
     return validatedConvert(measureTiming);
 }
@@ -1037,6 +1130,14 @@
     return validatedConvert(outputShapes);
 }
 
+nn::GeneralResult<Capabilities> convert(const nn::Capabilities& capabilities) {
+    return validatedConvert(capabilities);
+}
+
+nn::GeneralResult<Extension> convert(const nn::Extension& extension) {
+    return validatedConvert(extension);
+}
+
 nn::GeneralResult<std::vector<BufferRole>> convert(const std::vector<nn::BufferRole>& bufferRoles) {
     return validatedConvert(bufferRoles);
 }
@@ -1055,6 +1156,21 @@
         const std::vector<nn::SyncFence>& syncFences) {
     return validatedConvert(syncFences);
 }
+nn::GeneralResult<std::vector<ExtensionNameAndPrefix>> convert(
+        const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) {
+    return unvalidatedConvert(extensionNameToPrefix);
+}
+
+#ifdef NN_AIDL_V4_OR_ABOVE
+nn::GeneralResult<std::vector<TokenValuePair>> convert(
+        const std::vector<nn::TokenValuePair>& metaData) {
+    return validatedConvert(metaData);
+}
+#endif  // NN_AIDL_V4_OR_ABOVE
+
+nn::GeneralResult<std::vector<Extension>> convert(const std::vector<nn::Extension>& extensions) {
+    return validatedConvert(extensions);
+}
 
 nn::GeneralResult<std::vector<int32_t>> toSigned(const std::vector<uint32_t>& vec) {
     if (!std::all_of(vec.begin(), vec.end(),
diff --git a/neuralnetworks/aidl/utils/src/Device.cpp b/neuralnetworks/aidl/utils/src/Device.cpp
index 5b7ec4e..f3f4fdb 100644
--- a/neuralnetworks/aidl/utils/src/Device.cpp
+++ b/neuralnetworks/aidl/utils/src/Device.cpp
@@ -215,7 +215,9 @@
 nn::GeneralResult<nn::SharedPreparedModel> Device::prepareModel(
         const nn::Model& model, nn::ExecutionPreference preference, nn::Priority priority,
         nn::OptionalTimePoint deadline, const std::vector<nn::SharedHandle>& modelCache,
-        const std::vector<nn::SharedHandle>& dataCache, const nn::CacheToken& token) const {
+        const std::vector<nn::SharedHandle>& dataCache, const nn::CacheToken& token,
+        const std::vector<nn::TokenValuePair>& hints,
+        const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const {
     // Ensure that model is ready for IPC.
     std::optional<nn::Model> maybeModelInShared;
     const nn::Model& modelInShared =
@@ -225,17 +227,28 @@
     const auto aidlPreference = NN_TRY(convert(preference));
     const auto aidlPriority = NN_TRY(convert(priority));
     const auto aidlDeadline = NN_TRY(convert(deadline));
-    const auto aidlModelCache = NN_TRY(convert(modelCache));
-    const auto aidlDataCache = NN_TRY(convert(dataCache));
+    auto aidlModelCache = NN_TRY(convert(modelCache));
+    auto aidlDataCache = NN_TRY(convert(dataCache));
     const auto aidlToken = NN_TRY(convert(token));
 
-    const auto cb = ndk::SharedRefBase::make<PreparedModelCallback>();
+    const auto cb = ndk::SharedRefBase::make<PreparedModelCallback>(kFeatureLevel);
     const auto scoped = kDeathHandler.protectCallback(cb.get());
 
+    if (kFeatureLevel.level >= nn::Version::Level::FEATURE_LEVEL_8) {
+        auto aidlHints = NN_TRY(convert(hints));
+        auto aidlExtensionPrefix = NN_TRY(convert(extensionNameToPrefix));
+        const auto ret = kDevice->prepareModelWithConfig(
+                aidlModel,
+                {aidlPreference, aidlPriority, aidlDeadline, std::move(aidlModelCache),
+                 std::move(aidlDataCache), aidlToken, std::move(aidlHints),
+                 std::move(aidlExtensionPrefix)},
+                cb);
+        HANDLE_ASTATUS(ret) << "prepareModel failed";
+        return cb->get();
+    }
     const auto ret = kDevice->prepareModel(aidlModel, aidlPreference, aidlPriority, aidlDeadline,
                                            aidlModelCache, aidlDataCache, aidlToken, cb);
     HANDLE_ASTATUS(ret) << "prepareModel failed";
-
     return cb->get();
 }
 
@@ -247,7 +260,7 @@
     const auto aidlDataCache = NN_TRY(convert(dataCache));
     const auto aidlToken = NN_TRY(convert(token));
 
-    const auto cb = ndk::SharedRefBase::make<PreparedModelCallback>();
+    const auto cb = ndk::SharedRefBase::make<PreparedModelCallback>(kFeatureLevel);
     const auto scoped = kDeathHandler.protectCallback(cb.get());
 
     const auto ret = kDevice->prepareModelFromCache(aidlDeadline, aidlModelCache, aidlDataCache,
diff --git a/neuralnetworks/aidl/utils/src/Execution.cpp b/neuralnetworks/aidl/utils/src/Execution.cpp
index 94edd90..2fd88af 100644
--- a/neuralnetworks/aidl/utils/src/Execution.cpp
+++ b/neuralnetworks/aidl/utils/src/Execution.cpp
@@ -35,44 +35,61 @@
 
 namespace aidl::android::hardware::neuralnetworks::utils {
 
-nn::GeneralResult<std::shared_ptr<const Execution>> Execution::create(
-        std::shared_ptr<const PreparedModel> preparedModel, Request request,
-        hal::utils::RequestRelocation relocation, bool measure, int64_t loopTimeoutDuration) {
+nn::GeneralResult<std::shared_ptr<const ExecutionWithCachedRequest>>
+ExecutionWithCachedRequest::create(std::shared_ptr<const PreparedModel> preparedModel,
+                                   Request request, hal::utils::RequestRelocation relocation,
+                                   bool measure, int64_t loopTimeoutDuration) {
     if (preparedModel == nullptr) {
-        return NN_ERROR() << "aidl::utils::Execution::create must have non-null preparedModel";
+        return NN_ERROR() << "aidl::utils::ExecutionWithCachedRequest::create must have non-null "
+                             "preparedModel";
     }
 
-    return std::make_shared<const Execution>(PrivateConstructorTag{}, std::move(preparedModel),
-                                             std::move(request), std::move(relocation), measure,
-                                             loopTimeoutDuration);
+    return std::make_shared<const ExecutionWithCachedRequest>(
+            PrivateConstructorTag{}, std::move(preparedModel), std::move(request),
+            std::move(relocation), measure, loopTimeoutDuration);
 }
 
-Execution::Execution(PrivateConstructorTag /*tag*/,
-                     std::shared_ptr<const PreparedModel> preparedModel, Request request,
-                     hal::utils::RequestRelocation relocation, bool measure,
-                     int64_t loopTimeoutDuration)
+ExecutionWithCachedRequest::ExecutionWithCachedRequest(
+        PrivateConstructorTag /*tag*/, std::shared_ptr<const PreparedModel> preparedModel,
+        Request request, hal::utils::RequestRelocation relocation, bool measure,
+        int64_t loopTimeoutDuration)
     : kPreparedModel(std::move(preparedModel)),
       kRequest(std::move(request)),
       kRelocation(std::move(relocation)),
       kMeasure(measure),
       kLoopTimeoutDuration(loopTimeoutDuration) {}
 
-nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> Execution::compute(
-        const nn::OptionalTimePoint& deadline) const {
+nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>>
+ExecutionWithCachedRequest::compute(const nn::OptionalTimePoint& deadline) const {
     const auto aidlDeadline = NN_TRY(convert(deadline));
     return kPreparedModel->executeInternal(kRequest, kMeasure, aidlDeadline, kLoopTimeoutDuration,
-                                           kRelocation);
+                                           {}, {}, kRelocation);
 }
 
-nn::GeneralResult<std::pair<nn::SyncFence, nn::ExecuteFencedInfoCallback>> Execution::computeFenced(
+nn::GeneralResult<std::pair<nn::SyncFence, nn::ExecuteFencedInfoCallback>>
+ExecutionWithCachedRequest::computeFenced(
         const std::vector<nn::SyncFence>& waitFor, const nn::OptionalTimePoint& deadline,
         const nn::OptionalDuration& timeoutDurationAfterFence) const {
     const auto aidlWaitFor = NN_TRY(convert(waitFor));
     const auto aidlDeadline = NN_TRY(convert(deadline));
     const auto aidlTimeoutDurationAfterFence = NN_TRY(convert(timeoutDurationAfterFence));
-    return kPreparedModel->executeFencedInternal(kRequest, aidlWaitFor, kMeasure, aidlDeadline,
-                                                 kLoopTimeoutDuration,
-                                                 aidlTimeoutDurationAfterFence, kRelocation);
+    return kPreparedModel->executeFencedInternal(
+            kRequest, aidlWaitFor, kMeasure, aidlDeadline, kLoopTimeoutDuration,
+            aidlTimeoutDurationAfterFence, {}, {}, kRelocation);
 }
 
+nn::GeneralResult<std::shared_ptr<const Execution>> Execution::create(
+        std::shared_ptr<aidl_hal::IExecution> execution, hal::utils::RequestRelocation relocation) {
+    if (execution == nullptr) {
+        return NN_ERROR() << "aidl::utils::Execution::create must have non-null execution";
+    }
+
+    return std::make_shared<const Execution>(PrivateConstructorTag{}, std::move(execution),
+                                             std::move(relocation));
+}
+
+Execution::Execution(PrivateConstructorTag /*tag*/, std::shared_ptr<aidl_hal::IExecution> execution,
+                     hal::utils::RequestRelocation relocation)
+    : kExecution(std::move(execution)), kRelocation(std::move(relocation)) {}
+
 }  // namespace aidl::android::hardware::neuralnetworks::utils
diff --git a/neuralnetworks/aidl/utils/src/InvalidDevice.cpp b/neuralnetworks/aidl/utils/src/InvalidDevice.cpp
index c9d9955..33270ff 100644
--- a/neuralnetworks/aidl/utils/src/InvalidDevice.cpp
+++ b/neuralnetworks/aidl/utils/src/InvalidDevice.cpp
@@ -167,6 +167,31 @@
     return ndk::ScopedAStatus::ok();
 }
 
+ndk::ScopedAStatus InvalidDevice::prepareModelWithConfig(
+        const Model& model, const PrepareModelConfig& config,
+        const std::shared_ptr<IPreparedModelCallback>& callback) {
+    if (!utils::valid(config.extensionNameToPrefix)) {
+        callback->notify(ErrorStatus::INVALID_ARGUMENT, nullptr);
+        return toAStatus(ErrorStatus::INVALID_ARGUMENT, "Invalid extensionNameToPrefix");
+    }
+    for (const auto& hint : config.compilationHints) {
+        auto result = std::find_if(config.extensionNameToPrefix.begin(),
+                                   config.extensionNameToPrefix.end(),
+                                   [&hint](const ExtensionNameAndPrefix& extension) {
+                                       uint16_t prefix = static_cast<uint32_t>(hint.token) >>
+                                                         IDevice::EXTENSION_TYPE_LOW_BITS_TYPE;
+                                       return prefix == extension.prefix;
+                                   });
+        if (result == config.extensionNameToPrefix.end()) {
+            callback->notify(ErrorStatus::INVALID_ARGUMENT, nullptr);
+            return toAStatus(ErrorStatus::INVALID_ARGUMENT,
+                             "Invalid token for compilation hints: " + std::to_string(hint.token));
+        }
+    }
+    return prepareModel(model, config.preference, config.priority, config.deadlineNs,
+                        config.modelCache, config.dataCache, config.cacheToken, callback);
+}
+
 ndk::ScopedAStatus InvalidDevice::prepareModelFromCache(
         int64_t /*deadline*/, const std::vector<ndk::ScopedFileDescriptor>& /*modelCache*/,
         const std::vector<ndk::ScopedFileDescriptor>& /*dataCache*/,
diff --git a/neuralnetworks/aidl/utils/src/PreparedModel.cpp b/neuralnetworks/aidl/utils/src/PreparedModel.cpp
index f25c2c8..7e3a31c 100644
--- a/neuralnetworks/aidl/utils/src/PreparedModel.cpp
+++ b/neuralnetworks/aidl/utils/src/PreparedModel.cpp
@@ -54,61 +54,16 @@
     return std::make_pair(NN_TRY(nn::convert(timingLaunched)), NN_TRY(nn::convert(timingFenced)));
 }
 
-}  // namespace
-
-nn::GeneralResult<std::shared_ptr<const PreparedModel>> PreparedModel::create(
-        std::shared_ptr<aidl_hal::IPreparedModel> preparedModel) {
-    if (preparedModel == nullptr) {
-        return NN_ERROR()
-               << "aidl_hal::utils::PreparedModel::create must have non-null preparedModel";
-    }
-
-    return std::make_shared<const PreparedModel>(PrivateConstructorTag{}, std::move(preparedModel));
-}
-
-PreparedModel::PreparedModel(PrivateConstructorTag /*tag*/,
-                             std::shared_ptr<aidl_hal::IPreparedModel> preparedModel)
-    : kPreparedModel(std::move(preparedModel)) {}
-
-nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> PreparedModel::execute(
-        const nn::Request& request, nn::MeasureTiming measure,
-        const nn::OptionalTimePoint& deadline,
-        const nn::OptionalDuration& loopTimeoutDuration) const {
-    // Ensure that request is ready for IPC.
-    std::optional<nn::Request> maybeRequestInShared;
-    hal::utils::RequestRelocation relocation;
-    const nn::Request& requestInShared = NN_TRY(hal::utils::convertRequestFromPointerToShared(
-            &request, nn::kDefaultRequestMemoryAlignment, nn::kDefaultRequestMemoryPadding,
-            &maybeRequestInShared, &relocation));
-
-    const auto aidlRequest = NN_TRY(convert(requestInShared));
-    const auto aidlMeasure = NN_TRY(convert(measure));
-    const auto aidlDeadline = NN_TRY(convert(deadline));
-    const auto aidlLoopTimeoutDuration = NN_TRY(convert(loopTimeoutDuration));
-    return executeInternal(aidlRequest, aidlMeasure, aidlDeadline, aidlLoopTimeoutDuration,
-                           relocation);
-}
-
-nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>>
-PreparedModel::executeInternal(const Request& request, bool measure, int64_t deadline,
-                               int64_t loopTimeoutDuration,
-                               const hal::utils::RequestRelocation& relocation) const {
-    if (relocation.input) {
-        relocation.input->flush();
-    }
-
-    ExecutionResult executionResult;
-    const auto ret = kPreparedModel->executeSynchronously(request, measure, deadline,
-                                                          loopTimeoutDuration, &executionResult);
-    HANDLE_ASTATUS(ret) << "executeSynchronously failed";
-    if (!executionResult.outputSufficientSize) {
+nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> handleExecutionResult(
+        const ExecutionResult& result, const hal::utils::RequestRelocation& relocation) {
+    if (!result.outputSufficientSize) {
         auto canonicalOutputShapes =
-                nn::convert(executionResult.outputShapes).value_or(std::vector<nn::OutputShape>{});
+                nn::convert(result.outputShapes).value_or(std::vector<nn::OutputShape>{});
         return NN_ERROR(nn::ErrorStatus::OUTPUT_INSUFFICIENT_SIZE, std::move(canonicalOutputShapes))
                << "execution failed with " << nn::ErrorStatus::OUTPUT_INSUFFICIENT_SIZE;
     }
     auto [outputShapes, timing] =
-            NN_TRY(convertExecutionResults(executionResult.outputShapes, executionResult.timing));
+            NN_TRY(convertExecutionResults(result.outputShapes, result.timing));
 
     if (relocation.output) {
         relocation.output->flush();
@@ -117,44 +72,8 @@
 }
 
 nn::GeneralResult<std::pair<nn::SyncFence, nn::ExecuteFencedInfoCallback>>
-PreparedModel::executeFenced(const nn::Request& request, const std::vector<nn::SyncFence>& waitFor,
-                             nn::MeasureTiming measure, const nn::OptionalTimePoint& deadline,
-                             const nn::OptionalDuration& loopTimeoutDuration,
-                             const nn::OptionalDuration& timeoutDurationAfterFence) const {
-    // Ensure that request is ready for IPC.
-    std::optional<nn::Request> maybeRequestInShared;
-    hal::utils::RequestRelocation relocation;
-    const nn::Request& requestInShared = NN_TRY(hal::utils::convertRequestFromPointerToShared(
-            &request, nn::kDefaultRequestMemoryAlignment, nn::kDefaultRequestMemoryPadding,
-            &maybeRequestInShared, &relocation));
-
-    const auto aidlRequest = NN_TRY(convert(requestInShared));
-    const auto aidlWaitFor = NN_TRY(convert(waitFor));
-    const auto aidlMeasure = NN_TRY(convert(measure));
-    const auto aidlDeadline = NN_TRY(convert(deadline));
-    const auto aidlLoopTimeoutDuration = NN_TRY(convert(loopTimeoutDuration));
-    const auto aidlTimeoutDurationAfterFence = NN_TRY(convert(timeoutDurationAfterFence));
-    return executeFencedInternal(aidlRequest, aidlWaitFor, aidlMeasure, aidlDeadline,
-                                 aidlLoopTimeoutDuration, aidlTimeoutDurationAfterFence,
-                                 relocation);
-}
-
-nn::GeneralResult<std::pair<nn::SyncFence, nn::ExecuteFencedInfoCallback>>
-PreparedModel::executeFencedInternal(const Request& request,
-                                     const std::vector<ndk::ScopedFileDescriptor>& waitFor,
-                                     bool measure, int64_t deadline, int64_t loopTimeoutDuration,
-                                     int64_t timeoutDurationAfterFence,
-                                     const hal::utils::RequestRelocation& relocation) const {
-    if (relocation.input) {
-        relocation.input->flush();
-    }
-
-    FencedExecutionResult result;
-    const auto ret =
-            kPreparedModel->executeFenced(request, waitFor, measure, deadline, loopTimeoutDuration,
-                                          timeoutDurationAfterFence, &result);
-    HANDLE_ASTATUS(ret) << "executeFenced failed";
-
+handleFencedExecutionResult(const FencedExecutionResult& result,
+                            const hal::utils::RequestRelocation& relocation) {
     auto resultSyncFence = nn::SyncFence::createAsSignaled();
     if (result.syncFence.get() != -1) {
         resultSyncFence = nn::SyncFence::create(NN_TRY(nn::convert(result.syncFence))).value();
@@ -165,7 +84,7 @@
         return NN_ERROR(nn::ErrorStatus::GENERAL_FAILURE) << "callback is null";
     }
 
-    // If executeFenced required the request memory to be moved into shared memory, block here until
+    // If computeFenced required the request memory to be moved into shared memory, block here until
     // the fenced execution has completed and flush the memory back.
     if (relocation.output) {
         const auto state = resultSyncFence.syncWait({});
@@ -189,9 +108,133 @@
     return std::make_pair(std::move(resultSyncFence), std::move(resultCallback));
 }
 
+}  // namespace
+
+nn::GeneralResult<std::shared_ptr<const PreparedModel>> PreparedModel::create(
+        std::shared_ptr<aidl_hal::IPreparedModel> preparedModel, nn::Version featureLevel) {
+    if (preparedModel == nullptr) {
+        return NN_ERROR()
+               << "aidl_hal::utils::PreparedModel::create must have non-null preparedModel";
+    }
+
+    return std::make_shared<const PreparedModel>(PrivateConstructorTag{}, std::move(preparedModel),
+                                                 featureLevel);
+}
+
+PreparedModel::PreparedModel(PrivateConstructorTag /*tag*/,
+                             std::shared_ptr<aidl_hal::IPreparedModel> preparedModel,
+                             nn::Version featureLevel)
+    : kPreparedModel(std::move(preparedModel)), kFeatureLevel(featureLevel) {}
+
+nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> PreparedModel::execute(
+        const nn::Request& request, nn::MeasureTiming measure,
+        const nn::OptionalTimePoint& deadline, const nn::OptionalDuration& loopTimeoutDuration,
+        const std::vector<nn::TokenValuePair>& hints,
+        const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const {
+    // Ensure that request is ready for IPC.
+    std::optional<nn::Request> maybeRequestInShared;
+    hal::utils::RequestRelocation relocation;
+    const nn::Request& requestInShared = NN_TRY(hal::utils::convertRequestFromPointerToShared(
+            &request, nn::kDefaultRequestMemoryAlignment, nn::kDefaultRequestMemoryPadding,
+            &maybeRequestInShared, &relocation));
+
+    const auto aidlRequest = NN_TRY(convert(requestInShared));
+    const auto aidlMeasure = NN_TRY(convert(measure));
+    const auto aidlDeadline = NN_TRY(convert(deadline));
+    const auto aidlLoopTimeoutDuration = NN_TRY(convert(loopTimeoutDuration));
+    return executeInternal(aidlRequest, aidlMeasure, aidlDeadline, aidlLoopTimeoutDuration, hints,
+                           extensionNameToPrefix, relocation);
+}
+
+nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>>
+PreparedModel::executeInternal(const Request& request, bool measure, int64_t deadline,
+                               int64_t loopTimeoutDuration,
+                               const std::vector<nn::TokenValuePair>& hints,
+                               const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix,
+                               const hal::utils::RequestRelocation& relocation) const {
+    if (relocation.input) {
+        relocation.input->flush();
+    }
+
+    ExecutionResult executionResult;
+    if (kFeatureLevel.level >= nn::Version::Level::FEATURE_LEVEL_8) {
+        auto aidlHints = NN_TRY(convert(hints));
+        auto aidlExtensionPrefix = NN_TRY(convert(extensionNameToPrefix));
+        const auto ret = kPreparedModel->executeSynchronouslyWithConfig(
+                request,
+                {measure, loopTimeoutDuration, std::move(aidlHints),
+                 std::move(aidlExtensionPrefix)},
+                deadline, &executionResult);
+        HANDLE_ASTATUS(ret) << "executeSynchronouslyWithConfig failed";
+    } else {
+        const auto ret = kPreparedModel->executeSynchronously(
+                request, measure, deadline, loopTimeoutDuration, &executionResult);
+        HANDLE_ASTATUS(ret) << "executeSynchronously failed";
+    }
+    return handleExecutionResult(executionResult, relocation);
+}
+
+nn::GeneralResult<std::pair<nn::SyncFence, nn::ExecuteFencedInfoCallback>>
+PreparedModel::executeFenced(
+        const nn::Request& request, const std::vector<nn::SyncFence>& waitFor,
+        nn::MeasureTiming measure, const nn::OptionalTimePoint& deadline,
+        const nn::OptionalDuration& loopTimeoutDuration,
+        const nn::OptionalDuration& timeoutDurationAfterFence,
+        const std::vector<nn::TokenValuePair>& hints,
+        const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const {
+    // Ensure that request is ready for IPC.
+    std::optional<nn::Request> maybeRequestInShared;
+    hal::utils::RequestRelocation relocation;
+    const nn::Request& requestInShared = NN_TRY(hal::utils::convertRequestFromPointerToShared(
+            &request, nn::kDefaultRequestMemoryAlignment, nn::kDefaultRequestMemoryPadding,
+            &maybeRequestInShared, &relocation));
+
+    const auto aidlRequest = NN_TRY(convert(requestInShared));
+    const auto aidlWaitFor = NN_TRY(convert(waitFor));
+    const auto aidlMeasure = NN_TRY(convert(measure));
+    const auto aidlDeadline = NN_TRY(convert(deadline));
+    const auto aidlLoopTimeoutDuration = NN_TRY(convert(loopTimeoutDuration));
+    const auto aidlTimeoutDurationAfterFence = NN_TRY(convert(timeoutDurationAfterFence));
+    return executeFencedInternal(aidlRequest, aidlWaitFor, aidlMeasure, aidlDeadline,
+                                 aidlLoopTimeoutDuration, aidlTimeoutDurationAfterFence, hints,
+                                 extensionNameToPrefix, relocation);
+}
+
+nn::GeneralResult<std::pair<nn::SyncFence, nn::ExecuteFencedInfoCallback>>
+PreparedModel::executeFencedInternal(
+        const Request& request, const std::vector<ndk::ScopedFileDescriptor>& waitFor, bool measure,
+        int64_t deadline, int64_t loopTimeoutDuration, int64_t timeoutDurationAfterFence,
+        const std::vector<nn::TokenValuePair>& hints,
+        const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix,
+        const hal::utils::RequestRelocation& relocation) const {
+    if (relocation.input) {
+        relocation.input->flush();
+    }
+
+    FencedExecutionResult result;
+    if (kFeatureLevel.level >= nn::Version::Level::FEATURE_LEVEL_8) {
+        auto aidlHints = NN_TRY(convert(hints));
+        auto aidlExtensionPrefix = NN_TRY(convert(extensionNameToPrefix));
+        const auto ret = kPreparedModel->executeFencedWithConfig(
+                request, waitFor,
+                {measure, loopTimeoutDuration, std::move(aidlHints),
+                 std::move(aidlExtensionPrefix)},
+                deadline, timeoutDurationAfterFence, &result);
+        HANDLE_ASTATUS(ret) << "executeFencedWithConfig failed";
+    } else {
+        const auto ret = kPreparedModel->executeFenced(request, waitFor, measure, deadline,
+                                                       loopTimeoutDuration,
+                                                       timeoutDurationAfterFence, &result);
+        HANDLE_ASTATUS(ret) << "executeFenced failed";
+    }
+    return handleFencedExecutionResult(result, relocation);
+}
+
 nn::GeneralResult<nn::SharedExecution> PreparedModel::createReusableExecution(
         const nn::Request& request, nn::MeasureTiming measure,
-        const nn::OptionalDuration& loopTimeoutDuration) const {
+        const nn::OptionalDuration& loopTimeoutDuration,
+        const std::vector<nn::TokenValuePair>& hints,
+        const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const {
     // Ensure that request is ready for IPC.
     std::optional<nn::Request> maybeRequestInShared;
     hal::utils::RequestRelocation relocation;
@@ -202,15 +245,31 @@
     auto aidlRequest = NN_TRY(convert(requestInShared));
     auto aidlMeasure = NN_TRY(convert(measure));
     auto aidlLoopTimeoutDuration = NN_TRY(convert(loopTimeoutDuration));
-    return Execution::create(shared_from_this(), std::move(aidlRequest), std::move(relocation),
-                             aidlMeasure, aidlLoopTimeoutDuration);
+
+    if (kFeatureLevel.level >= nn::Version::Level::FEATURE_LEVEL_8) {
+        std::shared_ptr<IExecution> execution;
+        auto aidlHints = NN_TRY(convert(hints));
+        auto aidlExtensionPrefix = NN_TRY(convert(extensionNameToPrefix));
+
+        const auto ret = kPreparedModel->createReusableExecution(
+                aidlRequest,
+                {aidlMeasure, aidlLoopTimeoutDuration, std::move(aidlHints),
+                 std::move(aidlExtensionPrefix)},
+                &execution);
+        HANDLE_ASTATUS(ret) << "createReusableExecution failed";
+        return Execution::create(std::move(execution), std::move(relocation));
+    }
+
+    return ExecutionWithCachedRequest::create(shared_from_this(), std::move(aidlRequest),
+                                              std::move(relocation), aidlMeasure,
+                                              aidlLoopTimeoutDuration);
 }
 
 nn::GeneralResult<nn::SharedBurst> PreparedModel::configureExecutionBurst() const {
     std::shared_ptr<IBurst> burst;
     const auto ret = kPreparedModel->configureExecutionBurst(&burst);
     HANDLE_ASTATUS(ret) << "configureExecutionBurst failed";
-    return Burst::create(std::move(burst));
+    return Burst::create(std::move(burst), kFeatureLevel);
 }
 
 std::any PreparedModel::getUnderlyingResource() const {
@@ -218,4 +277,36 @@
     return resource;
 }
 
+nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> Execution::compute(
+        const nn::OptionalTimePoint& deadline) const {
+    const auto aidlDeadline = NN_TRY(convert(deadline));
+
+    if (kRelocation.input) {
+        kRelocation.input->flush();
+    }
+
+    ExecutionResult executionResult;
+    auto ret = kExecution->executeSynchronously(aidlDeadline, &executionResult);
+    HANDLE_ASTATUS(ret) << "executeSynchronously failed";
+    return handleExecutionResult(executionResult, kRelocation);
+}
+
+nn::GeneralResult<std::pair<nn::SyncFence, nn::ExecuteFencedInfoCallback>> Execution::computeFenced(
+        const std::vector<nn::SyncFence>& waitFor, const nn::OptionalTimePoint& deadline,
+        const nn::OptionalDuration& timeoutDurationAfterFence) const {
+    const auto aidlWaitFor = NN_TRY(convert(waitFor));
+    const auto aidlDeadline = NN_TRY(convert(deadline));
+    const auto aidlTimeoutDurationAfterFence = NN_TRY(convert(timeoutDurationAfterFence));
+
+    if (kRelocation.input) {
+        kRelocation.input->flush();
+    }
+
+    FencedExecutionResult result;
+    const auto ret = kExecution->executeFenced(aidlWaitFor, aidlDeadline,
+                                               aidlTimeoutDurationAfterFence, &result);
+    HANDLE_ASTATUS(ret) << "executeFenced failed";
+    return handleFencedExecutionResult(result, kRelocation);
+}
+
 }  // namespace aidl::android::hardware::neuralnetworks::utils
diff --git a/neuralnetworks/aidl/utils/test/DeviceTest.cpp b/neuralnetworks/aidl/utils/test/DeviceTest.cpp
index 0366e7d..73727b3 100644
--- a/neuralnetworks/aidl/utils/test/DeviceTest.cpp
+++ b/neuralnetworks/aidl/utils/test/DeviceTest.cpp
@@ -17,6 +17,7 @@
 #include "MockBuffer.h"
 #include "MockDevice.h"
 #include "MockPreparedModel.h"
+#include "TestUtils.h"
 
 #include <aidl/android/hardware/neuralnetworks/BnDevice.h>
 #include <android/binder_auto_utils.h>
@@ -60,7 +61,6 @@
                                                 .powerUsage = std::numeric_limits<float>::max()};
 constexpr NumberOfCacheFiles kNumberOfCacheFiles = {.numModelCache = nn::kMaxNumberOfCacheFiles - 1,
                                                     .numDataCache = nn::kMaxNumberOfCacheFiles};
-
 constexpr auto makeStatusOk = [] { return ndk::ScopedAStatus::ok(); };
 
 std::shared_ptr<MockDevice> createMockDevice() {
@@ -123,6 +123,18 @@
     };
 }
 
+const std::vector<nn::TokenValuePair> kHints = {nn::TokenValuePair{.token = 0, .value = {1}}};
+const std::vector<nn::ExtensionNameAndPrefix> kExtensionNameToPrefix = {
+        nn::ExtensionNameAndPrefix{.name = "com.android.nn_test", .prefix = 1}};
+auto makePreparedModelWithConfigReturn(ErrorStatus launchStatus, ErrorStatus returnStatus,
+                                       const std::shared_ptr<MockPreparedModel>& preparedModel) {
+    return [launchStatus, returnStatus, preparedModel](
+                   const Model& /*model*/, const PrepareModelConfig& /*config*/,
+                   const std::shared_ptr<IPreparedModelCallback>& cb) -> ndk::ScopedAStatus {
+        return makePreparedModelReturnImpl(launchStatus, returnStatus, preparedModel, cb);
+    };
+}
+
 auto makePreparedModelFromCacheReturn(ErrorStatus launchStatus, ErrorStatus returnStatus,
                                       const std::shared_ptr<MockPreparedModel>& preparedModel) {
     return [launchStatus, returnStatus, preparedModel](
@@ -146,26 +158,7 @@
     return ndk::ScopedAStatus::fromStatus(STATUS_DEAD_OBJECT);
 };
 
-class DeviceTest : public ::testing::TestWithParam<nn::Version> {
-  protected:
-    const nn::Version kVersion = GetParam();
-};
-
-std::string printDeviceTest(const testing::TestParamInfo<nn::Version>& info) {
-    const nn::Version version = info.param;
-    CHECK(!version.runtimeOnlyFeatures);
-    switch (version.level) {
-        case nn::Version::Level::FEATURE_LEVEL_5:
-            return "v1";
-        case nn::Version::Level::FEATURE_LEVEL_6:
-            return "v2";
-        case nn::Version::Level::FEATURE_LEVEL_7:
-            return "v3";
-        default:
-            LOG(FATAL) << "Invalid AIDL version: " << version;
-            return "invalid";
-    }
-}
+class DeviceTest : public VersionedAidlUtilsTestBase {};
 
 }  // namespace
 
@@ -578,6 +571,8 @@
 }
 
 TEST_P(DeviceTest, prepareModel) {
+    if (kVersion.level > nn::Version::Level::FEATURE_LEVEL_7) return;
+
     // setup call
     const auto mockDevice = createMockDevice();
     const auto device = Device::create(kName, mockDevice, kVersion).value();
@@ -589,7 +584,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_TRUE(result.has_value())
@@ -598,6 +593,8 @@
 }
 
 TEST_P(DeviceTest, prepareModelLaunchError) {
+    if (kVersion.level > nn::Version::Level::FEATURE_LEVEL_7) return;
+
     // setup call
     const auto mockDevice = createMockDevice();
     const auto device = Device::create(kName, mockDevice, kVersion).value();
@@ -608,7 +605,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -616,6 +613,8 @@
 }
 
 TEST_P(DeviceTest, prepareModelReturnError) {
+    if (kVersion.level > nn::Version::Level::FEATURE_LEVEL_7) return;
+
     // setup call
     const auto mockDevice = createMockDevice();
     const auto device = Device::create(kName, mockDevice, kVersion).value();
@@ -626,7 +625,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -634,6 +633,8 @@
 }
 
 TEST_P(DeviceTest, prepareModelNullptrError) {
+    if (kVersion.level > nn::Version::Level::FEATURE_LEVEL_7) return;
+
     // setup call
     const auto mockDevice = createMockDevice();
     const auto device = Device::create(kName, mockDevice, kVersion).value();
@@ -644,7 +645,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -652,6 +653,8 @@
 }
 
 TEST_P(DeviceTest, prepareModelTransportFailure) {
+    if (kVersion.level > nn::Version::Level::FEATURE_LEVEL_7) return;
+
     // setup call
     const auto mockDevice = createMockDevice();
     const auto device = Device::create(kName, mockDevice, kVersion).value();
@@ -661,7 +664,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -669,6 +672,8 @@
 }
 
 TEST_P(DeviceTest, prepareModelDeadObject) {
+    if (kVersion.level > nn::Version::Level::FEATURE_LEVEL_7) return;
+
     // setup call
     const auto mockDevice = createMockDevice();
     const auto device = Device::create(kName, mockDevice, kVersion).value();
@@ -678,7 +683,7 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -686,6 +691,8 @@
 }
 
 TEST_P(DeviceTest, prepareModelAsyncCrash) {
+    if (kVersion.level > nn::Version::Level::FEATURE_LEVEL_7) return;
+
     // setup test
     const auto mockDevice = createMockDevice();
     const auto device = Device::create(kName, mockDevice, kVersion).value();
@@ -699,7 +706,157 @@
 
     // run test
     const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
-                                             nn::Priority::DEFAULT, {}, {}, {}, {});
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
+
+    // verify result
+    ASSERT_FALSE(result.has_value());
+    EXPECT_EQ(result.error().code, nn::ErrorStatus::DEAD_OBJECT);
+}
+
+TEST_P(DeviceTest, prepareModelWithConfig) {
+    if (kVersion.level < nn::Version::Level::FEATURE_LEVEL_8) return;
+
+    // setup call
+    const auto mockDevice = createMockDevice();
+    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    const auto mockPreparedModel = MockPreparedModel::create();
+    EXPECT_CALL(*mockDevice, prepareModelWithConfig(_, _, _))
+            .Times(1)
+            .WillOnce(Invoke(makePreparedModelWithConfigReturn(ErrorStatus::NONE, ErrorStatus::NONE,
+                                                               mockPreparedModel)));
+
+    // run test
+    const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, kHints,
+                                             kExtensionNameToPrefix);
+
+    // verify result
+    ASSERT_TRUE(result.has_value())
+            << "Failed with " << result.error().code << ": " << result.error().message;
+    EXPECT_NE(result.value(), nullptr);
+}
+
+TEST_P(DeviceTest, prepareModelWithConfigLaunchError) {
+    if (kVersion.level < nn::Version::Level::FEATURE_LEVEL_8) return;
+
+    // setup call
+    const auto mockDevice = createMockDevice();
+    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    EXPECT_CALL(*mockDevice, prepareModelWithConfig(_, _, _))
+            .Times(1)
+            .WillOnce(Invoke(makePreparedModelWithConfigReturn(
+                    ErrorStatus::GENERAL_FAILURE, ErrorStatus::GENERAL_FAILURE, nullptr)));
+
+    // run test
+    const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, kHints,
+                                             kExtensionNameToPrefix);
+
+    // verify result
+    ASSERT_FALSE(result.has_value());
+    EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
+}
+
+TEST_P(DeviceTest, prepareModelWithConfigReturnError) {
+    if (kVersion.level < nn::Version::Level::FEATURE_LEVEL_8) return;
+
+    // setup call
+    const auto mockDevice = createMockDevice();
+    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    EXPECT_CALL(*mockDevice, prepareModelWithConfig(_, _, _))
+            .Times(1)
+            .WillOnce(Invoke(makePreparedModelWithConfigReturn(
+                    ErrorStatus::NONE, ErrorStatus::GENERAL_FAILURE, nullptr)));
+
+    // run test
+    const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, kHints,
+                                             kExtensionNameToPrefix);
+
+    // verify result
+    ASSERT_FALSE(result.has_value());
+    EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
+}
+
+TEST_P(DeviceTest, prepareModelWithConfigNullptrError) {
+    if (kVersion.level < nn::Version::Level::FEATURE_LEVEL_8) return;
+
+    // setup call
+    const auto mockDevice = createMockDevice();
+    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    EXPECT_CALL(*mockDevice, prepareModelWithConfig(_, _, _))
+            .Times(1)
+            .WillOnce(Invoke(makePreparedModelWithConfigReturn(ErrorStatus::NONE, ErrorStatus::NONE,
+                                                               nullptr)));
+
+    // run test
+    const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, kHints,
+                                             kExtensionNameToPrefix);
+
+    // verify result
+    ASSERT_FALSE(result.has_value());
+    EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
+}
+
+TEST_P(DeviceTest, prepareModelWithConfigTransportFailure) {
+    if (kVersion.level < nn::Version::Level::FEATURE_LEVEL_8) return;
+
+    // setup call
+    const auto mockDevice = createMockDevice();
+    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    EXPECT_CALL(*mockDevice, prepareModelWithConfig(_, _, _))
+            .Times(1)
+            .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
+
+    // run test
+    const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, kHints,
+                                             kExtensionNameToPrefix);
+
+    // verify result
+    ASSERT_FALSE(result.has_value());
+    EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
+}
+
+TEST_P(DeviceTest, prepareModelWithConfigDeadObject) {
+    if (kVersion.level < nn::Version::Level::FEATURE_LEVEL_8) return;
+
+    // setup call
+    const auto mockDevice = createMockDevice();
+    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    EXPECT_CALL(*mockDevice, prepareModelWithConfig(_, _, _))
+            .Times(1)
+            .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
+
+    // run test
+    const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, kHints,
+                                             kExtensionNameToPrefix);
+
+    // verify result
+    ASSERT_FALSE(result.has_value());
+    EXPECT_EQ(result.error().code, nn::ErrorStatus::DEAD_OBJECT);
+}
+
+TEST_P(DeviceTest, prepareModelWithConfigAsyncCrash) {
+    if (kVersion.level < nn::Version::Level::FEATURE_LEVEL_8) return;
+
+    // setup test
+    const auto mockDevice = createMockDevice();
+    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    const auto ret = [&device]() {
+        DeathMonitor::serviceDied(device->getDeathMonitor());
+        return ndk::ScopedAStatus::ok();
+    };
+    EXPECT_CALL(*mockDevice, prepareModelWithConfig(_, _, _))
+            .Times(1)
+            .WillOnce(InvokeWithoutArgs(ret));
+
+    // run test
+    const auto result = device->prepareModel(kSimpleModel, nn::ExecutionPreference::DEFAULT,
+                                             nn::Priority::DEFAULT, {}, {}, {}, {}, kHints,
+                                             kExtensionNameToPrefix);
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -894,9 +1051,6 @@
     EXPECT_EQ(result.error().code, nn::ErrorStatus::DEAD_OBJECT);
 }
 
-INSTANTIATE_TEST_SUITE_P(TestDevice, DeviceTest,
-                         ::testing::Values(nn::kVersionFeatureLevel5, nn::kVersionFeatureLevel6,
-                                           nn::kVersionFeatureLevel7),
-                         printDeviceTest);
+INSTANTIATE_VERSIONED_AIDL_UTILS_TEST(DeviceTest, kAllAidlVersions);
 
 }  // namespace aidl::android::hardware::neuralnetworks::utils
diff --git a/neuralnetworks/aidl/utils/test/ExecutionTest.cpp b/neuralnetworks/aidl/utils/test/ExecutionTest.cpp
new file mode 100644
index 0000000..8519290
--- /dev/null
+++ b/neuralnetworks/aidl/utils/test/ExecutionTest.cpp
@@ -0,0 +1,254 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "MockExecution.h"
+#include "MockFencedExecutionCallback.h"
+
+#include <aidl/android/hardware/neuralnetworks/IFencedExecutionCallback.h>
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+#include <nnapi/IExecution.h>
+#include <nnapi/TypeUtils.h>
+#include <nnapi/Types.h>
+#include <nnapi/hal/aidl/Execution.h>
+
+#include <functional>
+#include <memory>
+
+namespace aidl::android::hardware::neuralnetworks::utils {
+namespace {
+
+using ::testing::_;
+using ::testing::DoAll;
+using ::testing::Invoke;
+using ::testing::InvokeWithoutArgs;
+using ::testing::SetArgPointee;
+
+const std::shared_ptr<IExecution> kInvalidExecution;
+constexpr auto kNoTiming = Timing{.timeOnDeviceNs = -1, .timeInDriverNs = -1};
+
+constexpr auto makeStatusOk = [] { return ndk::ScopedAStatus::ok(); };
+
+constexpr auto makeGeneralFailure = [] {
+    return ndk::ScopedAStatus::fromServiceSpecificError(
+            static_cast<int32_t>(ErrorStatus::GENERAL_FAILURE));
+};
+constexpr auto makeGeneralTransportFailure = [] {
+    return ndk::ScopedAStatus::fromStatus(STATUS_NO_MEMORY);
+};
+constexpr auto makeDeadObjectFailure = [] {
+    return ndk::ScopedAStatus::fromStatus(STATUS_DEAD_OBJECT);
+};
+
+auto makeFencedExecutionResult(const std::shared_ptr<MockFencedExecutionCallback>& callback) {
+    return [callback](const std::vector<ndk::ScopedFileDescriptor>& /*waitFor*/,
+                      int64_t /*deadline*/, int64_t /*duration*/,
+                      FencedExecutionResult* fencedExecutionResult) {
+        *fencedExecutionResult = FencedExecutionResult{.callback = callback,
+                                                       .syncFence = ndk::ScopedFileDescriptor(-1)};
+        return ndk::ScopedAStatus::ok();
+    };
+}
+
+}  // namespace
+
+TEST(ExecutionTest, invalidExecution) {
+    // run test
+    const auto result = Execution::create(kInvalidExecution, {});
+
+    // verify result
+    ASSERT_FALSE(result.has_value());
+    EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
+}
+
+TEST(ExecutionTest, executeSync) {
+    // setup call
+    const auto mockExecution = MockExecution::create();
+    const auto execution = Execution::create(mockExecution, {}).value();
+    const auto mockExecutionResult = ExecutionResult{
+            .outputSufficientSize = true,
+            .outputShapes = {},
+            .timing = kNoTiming,
+    };
+    EXPECT_CALL(*mockExecution, executeSynchronously(_, _))
+            .Times(1)
+            .WillOnce(
+                    DoAll(SetArgPointee<1>(mockExecutionResult), InvokeWithoutArgs(makeStatusOk)));
+
+    // run test
+    const auto result = execution->compute({});
+
+    // verify result
+    EXPECT_TRUE(result.has_value())
+            << "Failed with " << result.error().code << ": " << result.error().message;
+}
+
+TEST(ExecutionTest, executeSyncError) {
+    // setup test
+    const auto mockExecution = MockExecution::create();
+    const auto execution = Execution::create(mockExecution, {}).value();
+    EXPECT_CALL(*mockExecution, executeSynchronously(_, _))
+            .Times(1)
+            .WillOnce(Invoke(makeGeneralFailure));
+
+    // run test
+    const auto result = execution->compute({});
+
+    // verify result
+    ASSERT_FALSE(result.has_value());
+    EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
+}
+
+TEST(ExecutionTest, executeSyncTransportFailure) {
+    // setup test
+    const auto mockExecution = MockExecution::create();
+    const auto execution = Execution::create(mockExecution, {}).value();
+    EXPECT_CALL(*mockExecution, executeSynchronously(_, _))
+            .Times(1)
+            .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
+
+    // run test
+    const auto result = execution->compute({});
+
+    // verify result
+    ASSERT_FALSE(result.has_value());
+    EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
+}
+
+TEST(ExecutionTest, executeSyncDeadObject) {
+    // setup test
+    const auto mockExecution = MockExecution::create();
+    const auto execution = Execution::create(mockExecution, {}).value();
+    EXPECT_CALL(*mockExecution, executeSynchronously(_, _))
+            .Times(1)
+            .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
+
+    // run test
+    const auto result = execution->compute({});
+
+    // verify result
+    ASSERT_FALSE(result.has_value());
+    EXPECT_EQ(result.error().code, nn::ErrorStatus::DEAD_OBJECT);
+}
+
+TEST(ExecutionTest, executeFenced) {
+    // setup call
+    const auto mockExecution = MockExecution::create();
+    const auto execution = Execution::create(mockExecution, {}).value();
+    const auto mockCallback = MockFencedExecutionCallback::create();
+    EXPECT_CALL(*mockCallback, getExecutionInfo(_, _, _))
+            .Times(1)
+            .WillOnce(DoAll(SetArgPointee<0>(kNoTiming), SetArgPointee<1>(kNoTiming),
+                            SetArgPointee<2>(ErrorStatus::NONE), Invoke(makeStatusOk)));
+    EXPECT_CALL(*mockExecution, executeFenced(_, _, _, _))
+            .Times(1)
+            .WillOnce(Invoke(makeFencedExecutionResult(mockCallback)));
+
+    // run test
+    const auto result = execution->computeFenced({}, {}, {});
+
+    // verify result
+    ASSERT_TRUE(result.has_value())
+            << "Failed with " << result.error().code << ": " << result.error().message;
+    const auto& [syncFence, callback] = result.value();
+    EXPECT_EQ(syncFence.syncWait({}), nn::SyncFence::FenceState::SIGNALED);
+    ASSERT_NE(callback, nullptr);
+
+    // get results from callback
+    const auto callbackResult = callback();
+    ASSERT_TRUE(callbackResult.has_value()) << "Failed with " << callbackResult.error().code << ": "
+                                            << callbackResult.error().message;
+}
+
+TEST(ExecutionTest, executeFencedCallbackError) {
+    // setup call
+    const auto mockExecution = MockExecution::create();
+    const auto execution = Execution::create(mockExecution, {}).value();
+    const auto mockCallback = MockFencedExecutionCallback::create();
+    EXPECT_CALL(*mockCallback, getExecutionInfo(_, _, _))
+            .Times(1)
+            .WillOnce(Invoke(DoAll(SetArgPointee<0>(kNoTiming), SetArgPointee<1>(kNoTiming),
+                                   SetArgPointee<2>(ErrorStatus::GENERAL_FAILURE),
+                                   Invoke(makeStatusOk))));
+    EXPECT_CALL(*mockExecution, executeFenced(_, _, _, _))
+            .Times(1)
+            .WillOnce(Invoke(makeFencedExecutionResult(mockCallback)));
+
+    // run test
+    const auto result = execution->computeFenced({}, {}, {});
+
+    // verify result
+    ASSERT_TRUE(result.has_value())
+            << "Failed with " << result.error().code << ": " << result.error().message;
+    const auto& [syncFence, callback] = result.value();
+    EXPECT_NE(syncFence.syncWait({}), nn::SyncFence::FenceState::ACTIVE);
+    ASSERT_NE(callback, nullptr);
+
+    // verify callback failure
+    const auto callbackResult = callback();
+    ASSERT_FALSE(callbackResult.has_value());
+    EXPECT_EQ(callbackResult.error().code, nn::ErrorStatus::GENERAL_FAILURE);
+}
+
+TEST(ExecutionTest, executeFencedError) {
+    // setup test
+    const auto mockExecution = MockExecution::create();
+    const auto execution = Execution::create(mockExecution, {}).value();
+    EXPECT_CALL(*mockExecution, executeFenced(_, _, _, _))
+            .Times(1)
+            .WillOnce(InvokeWithoutArgs(makeGeneralFailure));
+
+    // run test
+    const auto result = execution->computeFenced({}, {}, {});
+
+    // verify result
+    ASSERT_FALSE(result.has_value());
+    EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
+}
+
+TEST(ExecutionTest, executeFencedTransportFailure) {
+    // setup test
+    const auto mockExecution = MockExecution::create();
+    const auto execution = Execution::create(mockExecution, {}).value();
+    EXPECT_CALL(*mockExecution, executeFenced(_, _, _, _))
+            .Times(1)
+            .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
+
+    // run test
+    const auto result = execution->computeFenced({}, {}, {});
+
+    // verify result
+    ASSERT_FALSE(result.has_value());
+    EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
+}
+
+TEST(ExecutionTest, executeFencedDeadObject) {
+    // setup test
+    const auto mockExecution = MockExecution::create();
+    const auto execution = Execution::create(mockExecution, {}).value();
+    EXPECT_CALL(*mockExecution, executeFenced(_, _, _, _))
+            .Times(1)
+            .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
+
+    // run test
+    const auto result = execution->computeFenced({}, {}, {});
+
+    // verify result
+    ASSERT_FALSE(result.has_value());
+    EXPECT_EQ(result.error().code, nn::ErrorStatus::DEAD_OBJECT);
+}
+
+}  // namespace aidl::android::hardware::neuralnetworks::utils
diff --git a/neuralnetworks/aidl/utils/test/MockBurst.h b/neuralnetworks/aidl/utils/test/MockBurst.h
index 5083bbd..4cf60b6 100644
--- a/neuralnetworks/aidl/utils/test/MockBurst.h
+++ b/neuralnetworks/aidl/utils/test/MockBurst.h
@@ -32,6 +32,10 @@
                  bool measureTiming, int64_t deadline, int64_t loopTimeoutDuration,
                  ExecutionResult* executionResult),
                 (override));
+    MOCK_METHOD(ndk::ScopedAStatus, executeSynchronouslyWithConfig,
+                (const Request& request, const std::vector<int64_t>& memoryIdentifierTokens,
+                 const ExecutionConfig& config, int64_t deadline, ExecutionResult* executionResult),
+                (override));
     MOCK_METHOD(ndk::ScopedAStatus, releaseMemoryResource, (int64_t memoryIdentifierToken),
                 (override));
 };
diff --git a/neuralnetworks/aidl/utils/test/MockDevice.h b/neuralnetworks/aidl/utils/test/MockDevice.h
index 3a28d55..47b8346 100644
--- a/neuralnetworks/aidl/utils/test/MockDevice.h
+++ b/neuralnetworks/aidl/utils/test/MockDevice.h
@@ -50,6 +50,10 @@
                  const std::vector<uint8_t>& token,
                  const std::shared_ptr<IPreparedModelCallback>& callback),
                 (override));
+    MOCK_METHOD(ndk::ScopedAStatus, prepareModelWithConfig,
+                (const Model& model, const PrepareModelConfig& config,
+                 const std::shared_ptr<IPreparedModelCallback>& callback),
+                (override));
     MOCK_METHOD(ndk::ScopedAStatus, prepareModelFromCache,
                 (int64_t deadline, const std::vector<ndk::ScopedFileDescriptor>& modelCache,
                  const std::vector<ndk::ScopedFileDescriptor>& dataCache,
diff --git a/neuralnetworks/aidl/utils/test/MockExecution.h b/neuralnetworks/aidl/utils/test/MockExecution.h
new file mode 100644
index 0000000..216f569
--- /dev/null
+++ b/neuralnetworks/aidl/utils/test/MockExecution.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_AIDL_UTILS_TEST_MOCK_EXECUTION_H
+#define ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_AIDL_UTILS_TEST_MOCK_EXECUTION_H
+
+#include <aidl/android/hardware/neuralnetworks/BnExecution.h>
+#include <android/binder_interface_utils.h>
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+#include <hidl/HidlSupport.h>
+#include <hidl/Status.h>
+
+namespace aidl::android::hardware::neuralnetworks::utils {
+
+class MockExecution final : public BnExecution {
+  public:
+    static std::shared_ptr<MockExecution> create();
+
+    MOCK_METHOD(ndk::ScopedAStatus, executeSynchronously,
+                (int64_t deadline, ExecutionResult* executionResult), (override));
+    MOCK_METHOD(ndk::ScopedAStatus, executeFenced,
+                (const std::vector<ndk::ScopedFileDescriptor>& waitFor, int64_t deadline,
+                 int64_t duration, FencedExecutionResult* fencedExecutionResult),
+                (override));
+};
+
+inline std::shared_ptr<MockExecution> MockExecution::create() {
+    return ndk::SharedRefBase::make<MockExecution>();
+}
+
+}  // namespace aidl::android::hardware::neuralnetworks::utils
+
+#endif  // ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_AIDL_UTILS_TEST_MOCK_EXECUTION_H
diff --git a/neuralnetworks/aidl/utils/test/MockPreparedModel.h b/neuralnetworks/aidl/utils/test/MockPreparedModel.h
index a4ae2b7..318acc2 100644
--- a/neuralnetworks/aidl/utils/test/MockPreparedModel.h
+++ b/neuralnetworks/aidl/utils/test/MockPreparedModel.h
@@ -17,6 +17,7 @@
 #ifndef ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_AIDL_UTILS_TEST_MOCK_PREPARED_MODEL_H
 #define ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_AIDL_UTILS_TEST_MOCK_PREPARED_MODEL_H
 
+#include <aidl/android/hardware/neuralnetworks/BnExecution.h>
 #include <aidl/android/hardware/neuralnetworks/BnPreparedModel.h>
 #include <android/binder_interface_utils.h>
 #include <gmock/gmock.h>
@@ -39,8 +40,21 @@
                  bool measureTiming, int64_t deadline, int64_t loopTimeoutDuration,
                  int64_t duration, FencedExecutionResult* fencedExecutionResult),
                 (override));
+    MOCK_METHOD(ndk::ScopedAStatus, executeSynchronouslyWithConfig,
+                (const Request& request, const ExecutionConfig& config, int64_t deadline,
+                 ExecutionResult* executionResult),
+                (override));
+    MOCK_METHOD(ndk::ScopedAStatus, executeFencedWithConfig,
+                (const Request& request, const std::vector<ndk::ScopedFileDescriptor>& waitFor,
+                 const ExecutionConfig& config, int64_t deadline, int64_t duration,
+                 FencedExecutionResult* fencedExecutionResult),
+                (override));
     MOCK_METHOD(ndk::ScopedAStatus, configureExecutionBurst, (std::shared_ptr<IBurst> * burst),
                 (override));
+    MOCK_METHOD(ndk::ScopedAStatus, createReusableExecution,
+                (const Request& request, const ExecutionConfig& config,
+                 std::shared_ptr<IExecution>* execution),
+                (override));
 };
 
 inline std::shared_ptr<MockPreparedModel> MockPreparedModel::create() {
diff --git a/neuralnetworks/aidl/utils/test/PreparedModelTest.cpp b/neuralnetworks/aidl/utils/test/PreparedModelTest.cpp
index 8bb5c90..bf6136d 100644
--- a/neuralnetworks/aidl/utils/test/PreparedModelTest.cpp
+++ b/neuralnetworks/aidl/utils/test/PreparedModelTest.cpp
@@ -15,8 +15,10 @@
  */
 
 #include "MockBurst.h"
+#include "MockExecution.h"
 #include "MockFencedExecutionCallback.h"
 #include "MockPreparedModel.h"
+#include "TestUtils.h"
 
 #include <aidl/android/hardware/neuralnetworks/IFencedExecutionCallback.h>
 #include <gmock/gmock.h>
@@ -66,21 +68,40 @@
     };
 }
 
+class PreparedModelTest : public VersionedAidlUtilsTestBase {};
+
+const std::vector<nn::TokenValuePair> kHints = {nn::TokenValuePair{.token = 0, .value = {1}}};
+const std::vector<nn::ExtensionNameAndPrefix> kExtensionNameToPrefix = {
+        nn::ExtensionNameAndPrefix{.name = "com.android.nn_test", .prefix = 1}};
+auto makeFencedExecutionWithConfigResult(
+        const std::shared_ptr<MockFencedExecutionCallback>& callback) {
+    return [callback](const Request& /*request*/,
+                      const std::vector<ndk::ScopedFileDescriptor>& /*waitFor*/,
+                      const ExecutionConfig& /*config*/, int64_t /*deadline*/, int64_t /*duration*/,
+                      FencedExecutionResult* fencedExecutionResult) {
+        *fencedExecutionResult = FencedExecutionResult{.callback = callback,
+                                                       .syncFence = ndk::ScopedFileDescriptor(-1)};
+        return ndk::ScopedAStatus::ok();
+    };
+}
+
 }  // namespace
 
-TEST(PreparedModelTest, invalidPreparedModel) {
+TEST_P(PreparedModelTest, invalidPreparedModel) {
     // run test
-    const auto result = PreparedModel::create(kInvalidPreparedModel);
+    const auto result = PreparedModel::create(kInvalidPreparedModel, kVersion);
 
     // verify result
     ASSERT_FALSE(result.has_value());
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST(PreparedModelTest, executeSync) {
+TEST_P(PreparedModelTest, executeSync) {
+    if (kVersion.level >= nn::Version::Level::FEATURE_LEVEL_8) return;
+
     // setup call
     const auto mockPreparedModel = MockPreparedModel::create();
-    const auto preparedModel = PreparedModel::create(mockPreparedModel).value();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
     const auto mockExecutionResult = ExecutionResult{
             .outputSufficientSize = true,
             .outputShapes = {},
@@ -92,65 +113,73 @@
                     DoAll(SetArgPointee<4>(mockExecutionResult), InvokeWithoutArgs(makeStatusOk)));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     EXPECT_TRUE(result.has_value())
             << "Failed with " << result.error().code << ": " << result.error().message;
 }
 
-TEST(PreparedModelTest, executeSyncError) {
+TEST_P(PreparedModelTest, executeSyncError) {
+    if (kVersion.level >= nn::Version::Level::FEATURE_LEVEL_8) return;
+
     // setup test
     const auto mockPreparedModel = MockPreparedModel::create();
-    const auto preparedModel = PreparedModel::create(mockPreparedModel).value();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
     EXPECT_CALL(*mockPreparedModel, executeSynchronously(_, _, _, _, _))
             .Times(1)
             .WillOnce(Invoke(makeGeneralFailure));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST(PreparedModelTest, executeSyncTransportFailure) {
+TEST_P(PreparedModelTest, executeSyncTransportFailure) {
+    if (kVersion.level >= nn::Version::Level::FEATURE_LEVEL_8) return;
+
     // setup test
     const auto mockPreparedModel = MockPreparedModel::create();
-    const auto preparedModel = PreparedModel::create(mockPreparedModel).value();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
     EXPECT_CALL(*mockPreparedModel, executeSynchronously(_, _, _, _, _))
             .Times(1)
             .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST(PreparedModelTest, executeSyncDeadObject) {
+TEST_P(PreparedModelTest, executeSyncDeadObject) {
+    if (kVersion.level >= nn::Version::Level::FEATURE_LEVEL_8) return;
+
     // setup test
     const auto mockPreparedModel = MockPreparedModel::create();
-    const auto preparedModel = PreparedModel::create(mockPreparedModel).value();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
     EXPECT_CALL(*mockPreparedModel, executeSynchronously(_, _, _, _, _))
             .Times(1)
             .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
     EXPECT_EQ(result.error().code, nn::ErrorStatus::DEAD_OBJECT);
 }
 
-TEST(PreparedModelTest, executeFenced) {
+TEST_P(PreparedModelTest, executeFenced) {
+    if (kVersion.level >= nn::Version::Level::FEATURE_LEVEL_8) return;
+
     // setup call
     const auto mockPreparedModel = MockPreparedModel::create();
-    const auto preparedModel = PreparedModel::create(mockPreparedModel).value();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
     const auto mockCallback = MockFencedExecutionCallback::create();
     EXPECT_CALL(*mockCallback, getExecutionInfo(_, _, _))
             .Times(1)
@@ -161,7 +190,7 @@
             .WillOnce(Invoke(makeFencedExecutionResult(mockCallback)));
 
     // run test
-    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {});
+    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_TRUE(result.has_value())
@@ -176,10 +205,12 @@
                                             << callbackResult.error().message;
 }
 
-TEST(PreparedModelTest, executeFencedCallbackError) {
+TEST_P(PreparedModelTest, executeFencedCallbackError) {
+    if (kVersion.level >= nn::Version::Level::FEATURE_LEVEL_8) return;
+
     // setup call
     const auto mockPreparedModel = MockPreparedModel::create();
-    const auto preparedModel = PreparedModel::create(mockPreparedModel).value();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
     const auto mockCallback = MockFencedExecutionCallback::create();
     EXPECT_CALL(*mockCallback, getExecutionInfo(_, _, _))
             .Times(1)
@@ -191,7 +222,7 @@
             .WillOnce(Invoke(makeFencedExecutionResult(mockCallback)));
 
     // run test
-    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {});
+    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_TRUE(result.has_value())
@@ -206,59 +237,67 @@
     EXPECT_EQ(callbackResult.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST(PreparedModelTest, executeFencedError) {
+TEST_P(PreparedModelTest, executeFencedError) {
+    if (kVersion.level >= nn::Version::Level::FEATURE_LEVEL_8) return;
+
     // setup test
     const auto mockPreparedModel = MockPreparedModel::create();
-    const auto preparedModel = PreparedModel::create(mockPreparedModel).value();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
     EXPECT_CALL(*mockPreparedModel, executeFenced(_, _, _, _, _, _, _))
             .Times(1)
             .WillOnce(InvokeWithoutArgs(makeGeneralFailure));
 
     // run test
-    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {});
+    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST(PreparedModelTest, executeFencedTransportFailure) {
+TEST_P(PreparedModelTest, executeFencedTransportFailure) {
+    if (kVersion.level >= nn::Version::Level::FEATURE_LEVEL_8) return;
+
     // setup test
     const auto mockPreparedModel = MockPreparedModel::create();
-    const auto preparedModel = PreparedModel::create(mockPreparedModel).value();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
     EXPECT_CALL(*mockPreparedModel, executeFenced(_, _, _, _, _, _, _))
             .Times(1)
             .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
 
     // run test
-    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {});
+    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST(PreparedModelTest, executeFencedDeadObject) {
+TEST_P(PreparedModelTest, executeFencedDeadObject) {
+    if (kVersion.level >= nn::Version::Level::FEATURE_LEVEL_8) return;
+
     // setup test
     const auto mockPreparedModel = MockPreparedModel::create();
-    const auto preparedModel = PreparedModel::create(mockPreparedModel).value();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
     EXPECT_CALL(*mockPreparedModel, executeFenced(_, _, _, _, _, _, _))
             .Times(1)
             .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
 
     // run test
-    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {});
+    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
     EXPECT_EQ(result.error().code, nn::ErrorStatus::DEAD_OBJECT);
 }
 
-TEST(PreparedModelTest, reusableExecuteSync) {
+TEST_P(PreparedModelTest, reusableExecuteSync) {
+    if (kVersion.level >= nn::Version::Level::FEATURE_LEVEL_8) return;
+
     // setup call
     const uint32_t kNumberOfComputations = 2;
     const auto mockPreparedModel = MockPreparedModel::create();
-    const auto preparedModel = PreparedModel::create(mockPreparedModel).value();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
     const auto mockExecutionResult = ExecutionResult{
             .outputSufficientSize = true,
             .outputShapes = {},
@@ -270,7 +309,7 @@
                     DoAll(SetArgPointee<4>(mockExecutionResult), InvokeWithoutArgs(makeStatusOk)));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -283,16 +322,18 @@
     }
 }
 
-TEST(PreparedModelTest, reusableExecuteSyncError) {
+TEST_P(PreparedModelTest, reusableExecuteSyncError) {
+    if (kVersion.level >= nn::Version::Level::FEATURE_LEVEL_8) return;
+
     // setup test
     const auto mockPreparedModel = MockPreparedModel::create();
-    const auto preparedModel = PreparedModel::create(mockPreparedModel).value();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
     EXPECT_CALL(*mockPreparedModel, executeSynchronously(_, _, _, _, _))
             .Times(1)
             .WillOnce(Invoke(makeGeneralFailure));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -303,16 +344,18 @@
     EXPECT_EQ(computeResult.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST(PreparedModelTest, reusableExecuteSyncTransportFailure) {
+TEST_P(PreparedModelTest, reusableExecuteSyncTransportFailure) {
+    if (kVersion.level >= nn::Version::Level::FEATURE_LEVEL_8) return;
+
     // setup test
     const auto mockPreparedModel = MockPreparedModel::create();
-    const auto preparedModel = PreparedModel::create(mockPreparedModel).value();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
     EXPECT_CALL(*mockPreparedModel, executeSynchronously(_, _, _, _, _))
             .Times(1)
             .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -323,16 +366,18 @@
     EXPECT_EQ(computeResult.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST(PreparedModelTest, reusableExecuteSyncDeadObject) {
+TEST_P(PreparedModelTest, reusableExecuteSyncDeadObject) {
+    if (kVersion.level >= nn::Version::Level::FEATURE_LEVEL_8) return;
+
     // setup test
     const auto mockPreparedModel = MockPreparedModel::create();
-    const auto preparedModel = PreparedModel::create(mockPreparedModel).value();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
     EXPECT_CALL(*mockPreparedModel, executeSynchronously(_, _, _, _, _))
             .Times(1)
             .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -343,11 +388,13 @@
     EXPECT_EQ(computeResult.error().code, nn::ErrorStatus::DEAD_OBJECT);
 }
 
-TEST(PreparedModelTest, reusableExecuteFenced) {
+TEST_P(PreparedModelTest, reusableExecuteFenced) {
+    if (kVersion.level >= nn::Version::Level::FEATURE_LEVEL_8) return;
+
     // setup call
     const uint32_t kNumberOfComputations = 2;
     const auto mockPreparedModel = MockPreparedModel::create();
-    const auto preparedModel = PreparedModel::create(mockPreparedModel).value();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
     const auto mockCallback = MockFencedExecutionCallback::create();
     EXPECT_CALL(*mockCallback, getExecutionInfo(_, _, _))
             .Times(kNumberOfComputations)
@@ -358,7 +405,7 @@
             .WillRepeatedly(Invoke(makeFencedExecutionResult(mockCallback)));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -379,10 +426,12 @@
     }
 }
 
-TEST(PreparedModelTest, reusableExecuteFencedCallbackError) {
+TEST_P(PreparedModelTest, reusableExecuteFencedCallbackError) {
+    if (kVersion.level >= nn::Version::Level::FEATURE_LEVEL_8) return;
+
     // setup call
     const auto mockPreparedModel = MockPreparedModel::create();
-    const auto preparedModel = PreparedModel::create(mockPreparedModel).value();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
     const auto mockCallback = MockFencedExecutionCallback::create();
     EXPECT_CALL(*mockCallback, getExecutionInfo(_, _, _))
             .Times(1)
@@ -394,7 +443,7 @@
             .WillOnce(Invoke(makeFencedExecutionResult(mockCallback)));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -413,16 +462,18 @@
     EXPECT_EQ(callbackResult.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST(PreparedModelTest, reusableExecuteFencedError) {
+TEST_P(PreparedModelTest, reusableExecuteFencedError) {
+    if (kVersion.level >= nn::Version::Level::FEATURE_LEVEL_8) return;
+
     // setup test
     const auto mockPreparedModel = MockPreparedModel::create();
-    const auto preparedModel = PreparedModel::create(mockPreparedModel).value();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
     EXPECT_CALL(*mockPreparedModel, executeFenced(_, _, _, _, _, _, _))
             .Times(1)
             .WillOnce(InvokeWithoutArgs(makeGeneralFailure));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -433,16 +484,18 @@
     EXPECT_EQ(computeResult.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST(PreparedModelTest, reusableExecuteFencedTransportFailure) {
+TEST_P(PreparedModelTest, reusableExecuteFencedTransportFailure) {
+    if (kVersion.level >= nn::Version::Level::FEATURE_LEVEL_8) return;
+
     // setup test
     const auto mockPreparedModel = MockPreparedModel::create();
-    const auto preparedModel = PreparedModel::create(mockPreparedModel).value();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
     EXPECT_CALL(*mockPreparedModel, executeFenced(_, _, _, _, _, _, _))
             .Times(1)
             .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -453,16 +506,18 @@
     EXPECT_EQ(computeResult.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST(PreparedModelTest, reusableExecuteFencedDeadObject) {
+TEST_P(PreparedModelTest, reusableExecuteFencedDeadObject) {
+    if (kVersion.level >= nn::Version::Level::FEATURE_LEVEL_8) return;
+
     // setup test
     const auto mockPreparedModel = MockPreparedModel::create();
-    const auto preparedModel = PreparedModel::create(mockPreparedModel).value();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
     EXPECT_CALL(*mockPreparedModel, executeFenced(_, _, _, _, _, _, _))
             .Times(1)
             .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
 
     // create execution
-    const auto createResult = preparedModel->createReusableExecution({}, {}, {});
+    const auto createResult = preparedModel->createReusableExecution({}, {}, {}, {}, {});
     ASSERT_TRUE(createResult.has_value())
             << "Failed with " << createResult.error().code << ": " << createResult.error().message;
     ASSERT_NE(createResult.value(), nullptr);
@@ -473,14 +528,214 @@
     EXPECT_EQ(computeResult.error().code, nn::ErrorStatus::DEAD_OBJECT);
 }
 
-TEST(PreparedModelTest, configureExecutionBurst) {
+TEST_P(PreparedModelTest, executeSyncWithConfig) {
+    if (kVersion.level < nn::Version::Level::FEATURE_LEVEL_8) return;
+
+    // setup call
+    const auto mockPreparedModel = MockPreparedModel::create();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
+    const auto mockExecutionResult = ExecutionResult{
+            .outputSufficientSize = true,
+            .outputShapes = {},
+            .timing = kNoTiming,
+    };
+    EXPECT_CALL(*mockPreparedModel, executeSynchronouslyWithConfig(_, _, _, _))
+            .Times(1)
+            .WillOnce(
+                    DoAll(SetArgPointee<3>(mockExecutionResult), InvokeWithoutArgs(makeStatusOk)));
+
+    // run test
+    const auto result = preparedModel->execute({}, {}, {}, {}, kHints, kExtensionNameToPrefix);
+
+    // verify result
+    EXPECT_TRUE(result.has_value())
+            << "Failed with " << result.error().code << ": " << result.error().message;
+}
+
+TEST_P(PreparedModelTest, executeSyncWithConfigError) {
+    if (kVersion.level < nn::Version::Level::FEATURE_LEVEL_8) return;
+
+    // setup test
+    const auto mockPreparedModel = MockPreparedModel::create();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
+    EXPECT_CALL(*mockPreparedModel, executeSynchronouslyWithConfig(_, _, _, _))
+            .Times(1)
+            .WillOnce(Invoke(makeGeneralFailure));
+
+    // run test
+    const auto result = preparedModel->execute({}, {}, {}, {}, kHints, kExtensionNameToPrefix);
+
+    // verify result
+    ASSERT_FALSE(result.has_value());
+    EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
+}
+
+TEST_P(PreparedModelTest, executeSyncWithConfigTransportFailure) {
+    if (kVersion.level < nn::Version::Level::FEATURE_LEVEL_8) return;
+
+    // setup test
+    const auto mockPreparedModel = MockPreparedModel::create();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
+    EXPECT_CALL(*mockPreparedModel, executeSynchronouslyWithConfig(_, _, _, _))
+            .Times(1)
+            .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
+
+    // run test
+    const auto result = preparedModel->execute({}, {}, {}, {}, kHints, kExtensionNameToPrefix);
+
+    // verify result
+    ASSERT_FALSE(result.has_value());
+    EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
+}
+
+TEST_P(PreparedModelTest, executeSyncWithConfigDeadObject) {
+    if (kVersion.level < nn::Version::Level::FEATURE_LEVEL_8) return;
+
+    // setup test
+    const auto mockPreparedModel = MockPreparedModel::create();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
+    EXPECT_CALL(*mockPreparedModel, executeSynchronouslyWithConfig(_, _, _, _))
+            .Times(1)
+            .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
+
+    // run test
+    const auto result = preparedModel->execute({}, {}, {}, {}, kHints, kExtensionNameToPrefix);
+
+    // verify result
+    ASSERT_FALSE(result.has_value());
+    EXPECT_EQ(result.error().code, nn::ErrorStatus::DEAD_OBJECT);
+}
+
+TEST_P(PreparedModelTest, executeFencedWithConfig) {
+    if (kVersion.level < nn::Version::Level::FEATURE_LEVEL_8) return;
+
+    // setup call
+    const auto mockPreparedModel = MockPreparedModel::create();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
+    const auto mockCallback = MockFencedExecutionCallback::create();
+    EXPECT_CALL(*mockCallback, getExecutionInfo(_, _, _))
+            .Times(1)
+            .WillOnce(DoAll(SetArgPointee<0>(kNoTiming), SetArgPointee<1>(kNoTiming),
+                            SetArgPointee<2>(ErrorStatus::NONE), Invoke(makeStatusOk)));
+    EXPECT_CALL(*mockPreparedModel, executeFencedWithConfig(_, _, _, _, _, _))
+            .Times(1)
+            .WillOnce(Invoke(makeFencedExecutionWithConfigResult(mockCallback)));
+
+    // run test
+    const auto result =
+            preparedModel->executeFenced({}, {}, {}, {}, {}, {}, kHints, kExtensionNameToPrefix);
+
+    // verify result
+    ASSERT_TRUE(result.has_value())
+            << "Failed with " << result.error().code << ": " << result.error().message;
+    const auto& [syncFence, callback] = result.value();
+    EXPECT_EQ(syncFence.syncWait({}), nn::SyncFence::FenceState::SIGNALED);
+    ASSERT_NE(callback, nullptr);
+
+    // get results from callback
+    const auto callbackResult = callback();
+    ASSERT_TRUE(callbackResult.has_value()) << "Failed with " << callbackResult.error().code << ": "
+                                            << callbackResult.error().message;
+}
+
+TEST_P(PreparedModelTest, executeFencedWithConfigCallbackError) {
+    if (kVersion.level < nn::Version::Level::FEATURE_LEVEL_8) return;
+
+    // setup call
+    const auto mockPreparedModel = MockPreparedModel::create();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
+    const auto mockCallback = MockFencedExecutionCallback::create();
+    EXPECT_CALL(*mockCallback, getExecutionInfo(_, _, _))
+            .Times(1)
+            .WillOnce(Invoke(DoAll(SetArgPointee<0>(kNoTiming), SetArgPointee<1>(kNoTiming),
+                                   SetArgPointee<2>(ErrorStatus::GENERAL_FAILURE),
+                                   Invoke(makeStatusOk))));
+    EXPECT_CALL(*mockPreparedModel, executeFencedWithConfig(_, _, _, _, _, _))
+            .Times(1)
+            .WillOnce(Invoke(makeFencedExecutionWithConfigResult(mockCallback)));
+
+    // run test
+    const auto result =
+            preparedModel->executeFenced({}, {}, {}, {}, {}, {}, kHints, kExtensionNameToPrefix);
+
+    // verify result
+    ASSERT_TRUE(result.has_value())
+            << "Failed with " << result.error().code << ": " << result.error().message;
+    const auto& [syncFence, callback] = result.value();
+    EXPECT_NE(syncFence.syncWait({}), nn::SyncFence::FenceState::ACTIVE);
+    ASSERT_NE(callback, nullptr);
+
+    // verify callback failure
+    const auto callbackResult = callback();
+    ASSERT_FALSE(callbackResult.has_value());
+    EXPECT_EQ(callbackResult.error().code, nn::ErrorStatus::GENERAL_FAILURE);
+}
+
+TEST_P(PreparedModelTest, executeFencedWithConfigError) {
+    if (kVersion.level < nn::Version::Level::FEATURE_LEVEL_8) return;
+
+    // setup test
+    const auto mockPreparedModel = MockPreparedModel::create();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
+    EXPECT_CALL(*mockPreparedModel, executeFencedWithConfig(_, _, _, _, _, _))
+            .Times(1)
+            .WillOnce(InvokeWithoutArgs(makeGeneralFailure));
+
+    // run test
+    const auto result =
+            preparedModel->executeFenced({}, {}, {}, {}, {}, {}, kHints, kExtensionNameToPrefix);
+
+    // verify result
+    ASSERT_FALSE(result.has_value());
+    EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
+}
+
+TEST_P(PreparedModelTest, executeFencedWithConfigTransportFailure) {
+    if (kVersion.level < nn::Version::Level::FEATURE_LEVEL_8) return;
+
+    // setup test
+    const auto mockPreparedModel = MockPreparedModel::create();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
+    EXPECT_CALL(*mockPreparedModel, executeFencedWithConfig(_, _, _, _, _, _))
+            .Times(1)
+            .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
+
+    // run test
+    const auto result =
+            preparedModel->executeFenced({}, {}, {}, {}, {}, {}, kHints, kExtensionNameToPrefix);
+
+    // verify result
+    ASSERT_FALSE(result.has_value());
+    EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
+}
+
+TEST_P(PreparedModelTest, executeFencedWithConfigDeadObject) {
+    if (kVersion.level < nn::Version::Level::FEATURE_LEVEL_8) return;
+
+    // setup test
+    const auto mockPreparedModel = MockPreparedModel::create();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
+    EXPECT_CALL(*mockPreparedModel, executeFencedWithConfig(_, _, _, _, _, _))
+            .Times(1)
+            .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
+
+    // run test
+    const auto result =
+            preparedModel->executeFenced({}, {}, {}, {}, {}, {}, kHints, kExtensionNameToPrefix);
+
+    // verify result
+    ASSERT_FALSE(result.has_value());
+    EXPECT_EQ(result.error().code, nn::ErrorStatus::DEAD_OBJECT);
+}
+
+TEST_P(PreparedModelTest, configureExecutionBurst) {
     // setup test
     const auto mockPreparedModel = MockPreparedModel::create();
     const auto mockBurst = ndk::SharedRefBase::make<MockBurst>();
     EXPECT_CALL(*mockPreparedModel, configureExecutionBurst(_))
             .Times(1)
             .WillOnce(DoAll(SetArgPointee<0>(mockBurst), Invoke(makeStatusOk)));
-    const auto preparedModel = PreparedModel::create(mockPreparedModel).value();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
 
     // run test
     const auto result = preparedModel->configureExecutionBurst();
@@ -491,13 +746,13 @@
     EXPECT_NE(result.value(), nullptr);
 }
 
-TEST(PreparedModelTest, configureExecutionBurstError) {
+TEST_P(PreparedModelTest, configureExecutionBurstError) {
     // setup test
     const auto mockPreparedModel = MockPreparedModel::create();
     EXPECT_CALL(*mockPreparedModel, configureExecutionBurst(_))
             .Times(1)
             .WillOnce(InvokeWithoutArgs(makeGeneralFailure));
-    const auto preparedModel = PreparedModel::create(mockPreparedModel).value();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
 
     // run test
     const auto result = preparedModel->configureExecutionBurst();
@@ -507,13 +762,13 @@
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST(PreparedModelTest, configureExecutionBurstTransportFailure) {
+TEST_P(PreparedModelTest, configureExecutionBurstTransportFailure) {
     // setup test
     const auto mockPreparedModel = MockPreparedModel::create();
     EXPECT_CALL(*mockPreparedModel, configureExecutionBurst(_))
             .Times(1)
             .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
-    const auto preparedModel = PreparedModel::create(mockPreparedModel).value();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
 
     // run test
     const auto result = preparedModel->configureExecutionBurst();
@@ -523,13 +778,13 @@
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST(PreparedModelTest, configureExecutionBurstDeadObject) {
+TEST_P(PreparedModelTest, configureExecutionBurstDeadObject) {
     // setup test
     const auto mockPreparedModel = MockPreparedModel::create();
     EXPECT_CALL(*mockPreparedModel, configureExecutionBurst(_))
             .Times(1)
             .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
-    const auto preparedModel = PreparedModel::create(mockPreparedModel).value();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
 
     // run test
     const auto result = preparedModel->configureExecutionBurst();
@@ -539,10 +794,84 @@
     EXPECT_EQ(result.error().code, nn::ErrorStatus::DEAD_OBJECT);
 }
 
-TEST(PreparedModelTest, getUnderlyingResource) {
+TEST_P(PreparedModelTest, createReusableExecution) {
+    if (kVersion.level < nn::Version::Level::FEATURE_LEVEL_8) return;
+
     // setup test
     const auto mockPreparedModel = MockPreparedModel::create();
-    const auto preparedModel = PreparedModel::create(mockPreparedModel).value();
+    const auto mockExecution = ndk::SharedRefBase::make<MockExecution>();
+    EXPECT_CALL(*mockPreparedModel, createReusableExecution(_, _, _))
+            .Times(1)
+            .WillOnce(DoAll(SetArgPointee<2>(mockExecution), Invoke(makeStatusOk)));
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
+
+    // run test
+    const auto result = preparedModel->createReusableExecution({}, {}, {}, {}, {});
+
+    // verify result
+    ASSERT_TRUE(result.has_value())
+            << "Failed with " << result.error().code << ": " << result.error().message;
+    EXPECT_NE(result.value(), nullptr);
+}
+
+TEST_P(PreparedModelTest, createReusableExecutionError) {
+    if (kVersion.level < nn::Version::Level::FEATURE_LEVEL_8) return;
+
+    // setup test
+    const auto mockPreparedModel = MockPreparedModel::create();
+    EXPECT_CALL(*mockPreparedModel, createReusableExecution(_, _, _))
+            .Times(1)
+            .WillOnce(InvokeWithoutArgs(makeGeneralFailure));
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
+
+    // run test
+    const auto result = preparedModel->createReusableExecution({}, {}, {}, {}, {});
+
+    // verify result
+    ASSERT_FALSE(result.has_value());
+    EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
+}
+
+TEST_P(PreparedModelTest, createReusableExecutionTransportFailure) {
+    if (kVersion.level < nn::Version::Level::FEATURE_LEVEL_8) return;
+
+    // setup test
+    const auto mockPreparedModel = MockPreparedModel::create();
+    EXPECT_CALL(*mockPreparedModel, createReusableExecution(_, _, _))
+            .Times(1)
+            .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
+
+    // run test
+    const auto result = preparedModel->createReusableExecution({}, {}, {}, {}, {});
+
+    // verify result
+    ASSERT_FALSE(result.has_value());
+    EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
+}
+
+TEST_P(PreparedModelTest, createReusableExecutionDeadObject) {
+    if (kVersion.level < nn::Version::Level::FEATURE_LEVEL_8) return;
+
+    // setup test
+    const auto mockPreparedModel = MockPreparedModel::create();
+    EXPECT_CALL(*mockPreparedModel, createReusableExecution(_, _, _))
+            .Times(1)
+            .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
+
+    // run test
+    const auto result = preparedModel->createReusableExecution({}, {}, {}, {}, {});
+
+    // verify result
+    ASSERT_FALSE(result.has_value());
+    EXPECT_EQ(result.error().code, nn::ErrorStatus::DEAD_OBJECT);
+}
+
+TEST_P(PreparedModelTest, getUnderlyingResource) {
+    // setup test
+    const auto mockPreparedModel = MockPreparedModel::create();
+    const auto preparedModel = PreparedModel::create(mockPreparedModel, kVersion).value();
 
     // run test
     const auto resource = preparedModel->getUnderlyingResource();
@@ -554,4 +883,6 @@
     EXPECT_EQ(maybeMock->get(), mockPreparedModel.get());
 }
 
+INSTANTIATE_VERSIONED_AIDL_UTILS_TEST(PreparedModelTest, kAllAidlVersions);
+
 }  // namespace aidl::android::hardware::neuralnetworks::utils
diff --git a/neuralnetworks/aidl/utils/test/TestUtils.cpp b/neuralnetworks/aidl/utils/test/TestUtils.cpp
new file mode 100644
index 0000000..9abec88
--- /dev/null
+++ b/neuralnetworks/aidl/utils/test/TestUtils.cpp
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "TestUtils.h"
+
+#include <android-base/logging.h>
+#include <gtest/gtest.h>
+#include <nnapi/TypeUtils.h>
+#include <nnapi/Types.h>
+#include <nnapi/hal/CommonUtils.h>
+#include <string>
+
+namespace aidl::android::hardware::neuralnetworks::utils {
+
+std::string printTestVersion(const testing::TestParamInfo<nn::Version>& info) {
+    switch (info.param.level) {
+        case nn::Version::Level::FEATURE_LEVEL_5:
+            return "v1";
+        case nn::Version::Level::FEATURE_LEVEL_6:
+            return "v2";
+        case nn::Version::Level::FEATURE_LEVEL_7:
+            return "v3";
+        case nn::Version::Level::FEATURE_LEVEL_8:
+            return "v4";
+        default:
+            LOG(FATAL) << "Invalid AIDL version: " << info.param;
+            return "invalid";
+    }
+}
+
+}  // namespace aidl::android::hardware::neuralnetworks::utils
diff --git a/neuralnetworks/aidl/utils/test/TestUtils.h b/neuralnetworks/aidl/utils/test/TestUtils.h
new file mode 100644
index 0000000..23f734a
--- /dev/null
+++ b/neuralnetworks/aidl/utils/test/TestUtils.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_AIDL_UTILS_TEST_TEST_UTILS_H
+#define ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_AIDL_UTILS_TEST_TEST_UTILS_H
+
+#include <gtest/gtest.h>
+#include <nnapi/Types.h>
+#include <nnapi/hal/CommonUtils.h>
+#include <string>
+
+namespace aidl::android::hardware::neuralnetworks::utils {
+
+class VersionedAidlUtilsTestBase : public ::testing::TestWithParam<nn::Version> {
+  protected:
+    const nn::Version kVersion = GetParam();
+};
+
+std::string printTestVersion(const testing::TestParamInfo<nn::Version>& info);
+
+inline const auto kAllAidlVersions =
+        ::testing::Values(nn::kVersionFeatureLevel5, nn::kVersionFeatureLevel6,
+                          nn::kVersionFeatureLevel7, nn::kVersionFeatureLevel8);
+
+#define INSTANTIATE_VERSIONED_AIDL_UTILS_TEST(TestSuite, versions) \
+    INSTANTIATE_TEST_SUITE_P(Versioned, TestSuite, versions, printTestVersion)
+
+}  // namespace aidl::android::hardware::neuralnetworks::utils
+
+#endif  // ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_AIDL_UTILS_TEST_TEST_UTILS_H
diff --git a/neuralnetworks/aidl/vts/functional/GeneratedTestHarness.cpp b/neuralnetworks/aidl/vts/functional/GeneratedTestHarness.cpp
index f67fd34..8c8a87a 100644
--- a/neuralnetworks/aidl/vts/functional/GeneratedTestHarness.cpp
+++ b/neuralnetworks/aidl/vts/functional/GeneratedTestHarness.cpp
@@ -58,25 +58,66 @@
     bool measureTiming;
     OutputType outputType;
     MemoryType memoryType;
+    bool reusable;
     // `reportSkipping` indicates if a test should print an info message in case
     // it is skipped. The field is set to true by default and is set to false in
     // quantization coupling tests to suppress skipping a test
     bool reportSkipping;
-    TestConfig(Executor executor, bool measureTiming, OutputType outputType, MemoryType memoryType)
-        : executor(executor),
-          measureTiming(measureTiming),
-          outputType(outputType),
-          memoryType(memoryType),
-          reportSkipping(true) {}
+    // `useConfig` indicates if a test should use execute*WithConfig functions for the execution.
+    bool useConfig;
     TestConfig(Executor executor, bool measureTiming, OutputType outputType, MemoryType memoryType,
-               bool reportSkipping)
+               bool reusable)
         : executor(executor),
           measureTiming(measureTiming),
           outputType(outputType),
           memoryType(memoryType),
-          reportSkipping(reportSkipping) {}
+          reusable(reusable),
+          reportSkipping(true),
+          useConfig(false) {}
+    TestConfig(Executor executor, bool measureTiming, OutputType outputType, MemoryType memoryType,
+               bool reusable, bool reportSkipping)
+        : executor(executor),
+          measureTiming(measureTiming),
+          outputType(outputType),
+          memoryType(memoryType),
+          reusable(reusable),
+          reportSkipping(reportSkipping),
+          useConfig(false) {}
+    TestConfig(Executor executor, bool measureTiming, OutputType outputType, MemoryType memoryType,
+               bool reusable, bool reportSkipping, bool useConfig)
+        : executor(executor),
+          measureTiming(measureTiming),
+          outputType(outputType),
+          memoryType(memoryType),
+          reusable(reusable),
+          reportSkipping(reportSkipping),
+          useConfig(useConfig) {}
 };
 
+std::string toString(OutputType type) {
+    switch (type) {
+        case OutputType::FULLY_SPECIFIED:
+            return "FULLY_SPECIFIED";
+        case OutputType::UNSPECIFIED:
+            return "UNSPECIFIED";
+        case OutputType::INSUFFICIENT:
+            return "INSUFFICIENT";
+        case OutputType::MISSED_DEADLINE:
+            return "MISSED_DEADLINE";
+    }
+}
+
+std::string toString(const TestConfig& config) {
+    std::stringstream ss;
+    ss << "TestConfig{.executor=" << toString(config.executor)
+       << ", .measureTiming=" << (config.measureTiming ? "true" : "false")
+       << ", .outputType=" << toString(config.outputType)
+       << ", .memoryType=" << toString(config.memoryType)
+       << ", .reusable=" << (config.reusable ? "true" : "false")
+       << ", .useConfig=" << (config.useConfig ? "true" : "false") << "}";
+    return ss.str();
+}
+
 enum class IOType { INPUT, OUTPUT };
 
 class DeviceMemoryAllocator {
@@ -558,209 +599,266 @@
         loopTimeoutDurationNs = 1 * kMillisecond;
     }
 
-    ErrorStatus executionStatus;
-    std::vector<OutputShape> outputShapes;
-    Timing timing = kNoTiming;
-    switch (testConfig.executor) {
-        case Executor::SYNC: {
-            SCOPED_TRACE("synchronous");
+    std::shared_ptr<IExecution> execution;
+    if (testConfig.reusable) {
+        const auto ret = preparedModel->createReusableExecution(
+                request, {testConfig.measureTiming, loopTimeoutDurationNs, {}, {}}, &execution);
+        ASSERT_TRUE(ret.isOk()) << static_cast<nn::ErrorStatus>(ret.getServiceSpecificError());
+        ASSERT_NE(nullptr, execution.get());
+    }
 
-            ExecutionResult executionResult;
-            // execute
-            const auto ret = preparedModel->executeSynchronously(request, testConfig.measureTiming,
-                                                                 kNoDeadline, loopTimeoutDurationNs,
-                                                                 &executionResult);
-            ASSERT_TRUE(ret.isOk() || ret.getExceptionCode() == EX_SERVICE_SPECIFIC)
-                    << ret.getDescription();
-            if (ret.isOk()) {
-                executionStatus = executionResult.outputSufficientSize
-                                          ? ErrorStatus::NONE
-                                          : ErrorStatus::OUTPUT_INSUFFICIENT_SIZE;
-                outputShapes = std::move(executionResult.outputShapes);
-                timing = executionResult.timing;
-            } else {
-                executionStatus = static_cast<ErrorStatus>(ret.getServiceSpecificError());
-            }
-            break;
-        }
-        case Executor::BURST: {
-            SCOPED_TRACE("burst");
+    const auto executeAndCheckResults = [&preparedModel, &execution, &testConfig, &testModel,
+                                         &context, &request, loopTimeoutDurationNs, skipped]() {
+        ErrorStatus executionStatus;
+        std::vector<OutputShape> outputShapes;
+        Timing timing = kNoTiming;
+        switch (testConfig.executor) {
+            case Executor::SYNC: {
+                SCOPED_TRACE("synchronous");
 
-            // create burst
-            std::shared_ptr<IBurst> burst;
-            auto ret = preparedModel->configureExecutionBurst(&burst);
-            ASSERT_TRUE(ret.isOk()) << ret.getDescription();
-            ASSERT_NE(nullptr, burst.get());
-
-            // associate a unique slot with each memory pool
-            int64_t currentSlot = 0;
-            std::vector<int64_t> slots;
-            slots.reserve(request.pools.size());
-            for (const auto& pool : request.pools) {
-                if (pool.getTag() == RequestMemoryPool::Tag::pool) {
-                    slots.push_back(currentSlot++);
+                ExecutionResult executionResult;
+                // execute
+                ::ndk::ScopedAStatus ret;
+                if (testConfig.reusable) {
+                    ret = execution->executeSynchronously(kNoDeadline, &executionResult);
+                } else if (testConfig.useConfig) {
+                    ret = preparedModel->executeSynchronouslyWithConfig(
+                            request, {testConfig.measureTiming, loopTimeoutDurationNs, {}, {}},
+                            kNoDeadline, &executionResult);
                 } else {
-                    EXPECT_EQ(pool.getTag(), RequestMemoryPool::Tag::token);
-                    slots.push_back(-1);
+                    ret = preparedModel->executeSynchronously(request, testConfig.measureTiming,
+                                                              kNoDeadline, loopTimeoutDurationNs,
+                                                              &executionResult);
                 }
+                ASSERT_TRUE(ret.isOk() || ret.getExceptionCode() == EX_SERVICE_SPECIFIC)
+                        << ret.getDescription();
+                if (ret.isOk()) {
+                    executionStatus = executionResult.outputSufficientSize
+                                              ? ErrorStatus::NONE
+                                              : ErrorStatus::OUTPUT_INSUFFICIENT_SIZE;
+                    outputShapes = std::move(executionResult.outputShapes);
+                    timing = executionResult.timing;
+                } else {
+                    executionStatus = static_cast<ErrorStatus>(ret.getServiceSpecificError());
+                }
+                break;
             }
+            case Executor::BURST: {
+                SCOPED_TRACE("burst");
 
-            ExecutionResult executionResult;
-            // execute
-            ret = burst->executeSynchronously(request, slots, testConfig.measureTiming, kNoDeadline,
-                                              loopTimeoutDurationNs, &executionResult);
-            ASSERT_TRUE(ret.isOk() || ret.getExceptionCode() == EX_SERVICE_SPECIFIC)
-                    << ret.getDescription();
-            if (ret.isOk()) {
-                executionStatus = executionResult.outputSufficientSize
-                                          ? ErrorStatus::NONE
-                                          : ErrorStatus::OUTPUT_INSUFFICIENT_SIZE;
-                outputShapes = std::move(executionResult.outputShapes);
-                timing = executionResult.timing;
-            } else {
-                executionStatus = static_cast<ErrorStatus>(ret.getServiceSpecificError());
-            }
-
-            // Mark each slot as unused after the execution. This is unnecessary because the burst
-            // is freed after this scope ends, but this is here to test the functionality.
-            for (int64_t slot : slots) {
-                ret = burst->releaseMemoryResource(slot);
+                // create burst
+                std::shared_ptr<IBurst> burst;
+                auto ret = preparedModel->configureExecutionBurst(&burst);
                 ASSERT_TRUE(ret.isOk()) << ret.getDescription();
-            }
+                ASSERT_NE(nullptr, burst.get());
 
-            break;
-        }
-        case Executor::FENCED: {
-            SCOPED_TRACE("fenced");
-            ErrorStatus result = ErrorStatus::NONE;
-            FencedExecutionResult executionResult;
-            auto ret = preparedModel->executeFenced(request, {}, testConfig.measureTiming,
-                                                    kNoDeadline, loopTimeoutDurationNs, kNoDuration,
-                                                    &executionResult);
-            ASSERT_TRUE(ret.isOk() || ret.getExceptionCode() == EX_SERVICE_SPECIFIC)
-                    << ret.getDescription();
-            if (!ret.isOk()) {
-                result = static_cast<ErrorStatus>(ret.getServiceSpecificError());
-                executionStatus = result;
-            } else if (executionResult.syncFence.get() != -1) {
-                std::vector<ndk::ScopedFileDescriptor> waitFor;
-                auto dupFd = dup(executionResult.syncFence.get());
-                ASSERT_NE(dupFd, -1);
-                waitFor.emplace_back(dupFd);
-                // If a sync fence is returned, try start another run waiting for the sync fence.
-                ret = preparedModel->executeFenced(request, waitFor, testConfig.measureTiming,
-                                                   kNoDeadline, loopTimeoutDurationNs, kNoDuration,
-                                                   &executionResult);
-                ASSERT_TRUE(ret.isOk());
-                waitForSyncFence(executionResult.syncFence.get());
-            }
-            if (result == ErrorStatus::NONE) {
-                ASSERT_NE(executionResult.callback, nullptr);
-                Timing timingFenced;
-                auto ret = executionResult.callback->getExecutionInfo(&timing, &timingFenced,
-                                                                      &executionStatus);
-                ASSERT_TRUE(ret.isOk());
-            }
-            break;
-        }
-        default: {
-            FAIL() << "Unsupported execution mode for AIDL interface.";
-        }
-    }
-
-    if (testConfig.outputType != OutputType::FULLY_SPECIFIED &&
-        executionStatus == ErrorStatus::GENERAL_FAILURE) {
-        if (skipped != nullptr) {
-            *skipped = true;
-        }
-        if (!testConfig.reportSkipping) {
-            return;
-        }
-        LOG(INFO) << "NN VTS: Early termination of test because vendor service cannot "
-                     "execute model that it does not support.";
-        std::cout << "[          ]   Early termination of test because vendor service cannot "
-                     "execute model that it does not support."
-                  << std::endl;
-        GTEST_SKIP();
-    }
-    if (!testConfig.measureTiming) {
-        EXPECT_EQ(timing, kNoTiming);
-    } else {
-        if (timing.timeOnDeviceNs != -1 && timing.timeInDriverNs != -1) {
-            EXPECT_LE(timing.timeOnDeviceNs, timing.timeInDriverNs);
-        }
-    }
-
-    switch (testConfig.outputType) {
-        case OutputType::FULLY_SPECIFIED:
-            if (testConfig.executor == Executor::FENCED && hasZeroSizedOutput(testModel)) {
-                // Executor::FENCED does not support zero-sized output.
-                ASSERT_EQ(ErrorStatus::INVALID_ARGUMENT, executionStatus);
-                return;
-            }
-            // If the model output operands are fully specified, outputShapes must be either
-            // either empty, or have the same number of elements as the number of outputs.
-            ASSERT_EQ(ErrorStatus::NONE, executionStatus);
-            ASSERT_TRUE(outputShapes.size() == 0 ||
-                        outputShapes.size() == testModel.main.outputIndexes.size());
-            break;
-        case OutputType::UNSPECIFIED:
-            if (testConfig.executor == Executor::FENCED) {
-                // For Executor::FENCED, the output shape must be fully specified.
-                ASSERT_EQ(ErrorStatus::INVALID_ARGUMENT, executionStatus);
-                return;
-            }
-            // If the model output operands are not fully specified, outputShapes must have
-            // the same number of elements as the number of outputs.
-            ASSERT_EQ(ErrorStatus::NONE, executionStatus);
-            ASSERT_EQ(outputShapes.size(), testModel.main.outputIndexes.size());
-            break;
-        case OutputType::INSUFFICIENT:
-            if (testConfig.executor == Executor::FENCED) {
-                // For Executor::FENCED, the output shape must be fully specified.
-                ASSERT_EQ(ErrorStatus::INVALID_ARGUMENT, executionStatus);
-                return;
-            }
-            ASSERT_EQ(ErrorStatus::OUTPUT_INSUFFICIENT_SIZE, executionStatus);
-            ASSERT_EQ(outputShapes.size(), testModel.main.outputIndexes.size());
-            // Check that all returned output dimensions are at least as fully specified as the
-            // union of the information about the corresponding operand in the model and in the
-            // request. In this test, all model outputs have known rank with all dimensions
-            // unspecified, and no dimensional information is provided in the request.
-            for (uint32_t i = 0; i < outputShapes.size(); i++) {
-                ASSERT_EQ(outputShapes[i].isSufficient, i != kInsufficientOutputIndex);
-                const auto& actual = outputShapes[i].dimensions;
-                const auto& golden =
-                        testModel.main.operands[testModel.main.outputIndexes[i]].dimensions;
-                ASSERT_EQ(actual.size(), golden.size());
-                for (uint32_t j = 0; j < actual.size(); j++) {
-                    if (actual[j] == 0) continue;
-                    EXPECT_EQ(actual[j], golden[j]) << "index: " << j;
+                // associate a unique slot with each memory pool
+                int64_t currentSlot = 0;
+                std::vector<int64_t> slots;
+                slots.reserve(request.pools.size());
+                for (const auto& pool : request.pools) {
+                    if (pool.getTag() == RequestMemoryPool::Tag::pool) {
+                        slots.push_back(currentSlot++);
+                    } else {
+                        EXPECT_EQ(pool.getTag(), RequestMemoryPool::Tag::token);
+                        slots.push_back(-1);
+                    }
                 }
+
+                ExecutionResult executionResult;
+                // execute
+                if (testConfig.useConfig) {
+                    ret = burst->executeSynchronouslyWithConfig(
+                            request, slots,
+                            {testConfig.measureTiming, loopTimeoutDurationNs, {}, {}}, kNoDeadline,
+                            &executionResult);
+                } else {
+                    ret = burst->executeSynchronously(request, slots, testConfig.measureTiming,
+                                                      kNoDeadline, loopTimeoutDurationNs,
+                                                      &executionResult);
+                }
+                ASSERT_TRUE(ret.isOk() || ret.getExceptionCode() == EX_SERVICE_SPECIFIC)
+                        << ret.getDescription();
+                if (ret.isOk()) {
+                    executionStatus = executionResult.outputSufficientSize
+                                              ? ErrorStatus::NONE
+                                              : ErrorStatus::OUTPUT_INSUFFICIENT_SIZE;
+                    outputShapes = std::move(executionResult.outputShapes);
+                    timing = executionResult.timing;
+                } else {
+                    executionStatus = static_cast<ErrorStatus>(ret.getServiceSpecificError());
+                }
+
+                // Mark each slot as unused after the execution. This is unnecessary because the
+                // burst is freed after this scope ends, but this is here to test the functionality.
+                for (int64_t slot : slots) {
+                    ret = burst->releaseMemoryResource(slot);
+                    ASSERT_TRUE(ret.isOk()) << ret.getDescription();
+                }
+
+                break;
             }
-            return;
-        case OutputType::MISSED_DEADLINE:
-            ASSERT_TRUE(executionStatus == ErrorStatus::MISSED_DEADLINE_TRANSIENT ||
-                        executionStatus == ErrorStatus::MISSED_DEADLINE_PERSISTENT)
-                    << "executionStatus = " << executionStatus;
-            return;
+            case Executor::FENCED: {
+                SCOPED_TRACE("fenced");
+                ErrorStatus result = ErrorStatus::NONE;
+                FencedExecutionResult executionResult;
+                ::ndk::ScopedAStatus ret;
+                if (testConfig.reusable) {
+                    ret = execution->executeFenced({}, kNoDeadline, kNoDuration, &executionResult);
+                } else if (testConfig.useConfig) {
+                    ret = preparedModel->executeFencedWithConfig(
+                            request, {}, {testConfig.measureTiming, loopTimeoutDurationNs, {}, {}},
+                            kNoDeadline, kNoDuration, &executionResult);
+                } else {
+                    ret = preparedModel->executeFenced(request, {}, testConfig.measureTiming,
+                                                       kNoDeadline, loopTimeoutDurationNs,
+                                                       kNoDuration, &executionResult);
+                }
+                ASSERT_TRUE(ret.isOk() || ret.getExceptionCode() == EX_SERVICE_SPECIFIC)
+                        << ret.getDescription();
+                if (!ret.isOk()) {
+                    result = static_cast<ErrorStatus>(ret.getServiceSpecificError());
+                    executionStatus = result;
+                } else if (executionResult.syncFence.get() != -1) {
+                    std::vector<ndk::ScopedFileDescriptor> waitFor;
+                    auto dupFd = dup(executionResult.syncFence.get());
+                    ASSERT_NE(dupFd, -1);
+                    waitFor.emplace_back(dupFd);
+                    // If a sync fence is returned, try start another run waiting for the sync
+                    // fence.
+                    if (testConfig.reusable) {
+                        ret = execution->executeFenced(waitFor, kNoDeadline, kNoDuration,
+                                                       &executionResult);
+                    } else if (testConfig.useConfig) {
+                        ret = preparedModel->executeFencedWithConfig(
+                                request, waitFor,
+                                {testConfig.measureTiming, loopTimeoutDurationNs, {}, {}},
+                                kNoDeadline, kNoDuration, &executionResult);
+                    } else {
+                        ret = preparedModel->executeFenced(
+                                request, waitFor, testConfig.measureTiming, kNoDeadline,
+                                loopTimeoutDurationNs, kNoDuration, &executionResult);
+                    }
+                    ASSERT_TRUE(ret.isOk());
+                    waitForSyncFence(executionResult.syncFence.get());
+                }
+                if (result == ErrorStatus::NONE) {
+                    ASSERT_NE(executionResult.callback, nullptr);
+                    Timing timingFenced;
+                    auto ret = executionResult.callback->getExecutionInfo(&timing, &timingFenced,
+                                                                          &executionStatus);
+                    ASSERT_TRUE(ret.isOk());
+                }
+                break;
+            }
+            default: {
+                FAIL() << "Unsupported execution mode for AIDL interface.";
+            }
+        }
+
+        if (testConfig.outputType != OutputType::FULLY_SPECIFIED &&
+            executionStatus == ErrorStatus::GENERAL_FAILURE) {
+            if (skipped != nullptr) {
+                *skipped = true;
+            }
+            if (!testConfig.reportSkipping) {
+                return;
+            }
+            LOG(INFO) << "NN VTS: Early termination of test because vendor service cannot "
+                         "execute model that it does not support.";
+            std::cout << "[          ]   Early termination of test because vendor service cannot "
+                         "execute model that it does not support."
+                      << std::endl;
+            GTEST_SKIP();
+        }
+        if (!testConfig.measureTiming) {
+            EXPECT_EQ(timing, kNoTiming);
+        } else {
+            if (timing.timeOnDeviceNs != -1 && timing.timeInDriverNs != -1) {
+                EXPECT_LE(timing.timeOnDeviceNs, timing.timeInDriverNs);
+            }
+        }
+
+        switch (testConfig.outputType) {
+            case OutputType::FULLY_SPECIFIED:
+                if (testConfig.executor == Executor::FENCED && hasZeroSizedOutput(testModel)) {
+                    // Executor::FENCED does not support zero-sized output.
+                    ASSERT_EQ(ErrorStatus::INVALID_ARGUMENT, executionStatus);
+                    return;
+                }
+                // If the model output operands are fully specified, outputShapes must be either
+                // either empty, or have the same number of elements as the number of outputs.
+                ASSERT_EQ(ErrorStatus::NONE, executionStatus);
+                ASSERT_TRUE(outputShapes.size() == 0 ||
+                            outputShapes.size() == testModel.main.outputIndexes.size());
+                break;
+            case OutputType::UNSPECIFIED:
+                if (testConfig.executor == Executor::FENCED) {
+                    // For Executor::FENCED, the output shape must be fully specified.
+                    ASSERT_EQ(ErrorStatus::INVALID_ARGUMENT, executionStatus);
+                    return;
+                }
+                // If the model output operands are not fully specified, outputShapes must have
+                // the same number of elements as the number of outputs.
+                ASSERT_EQ(ErrorStatus::NONE, executionStatus);
+                ASSERT_EQ(outputShapes.size(), testModel.main.outputIndexes.size());
+                break;
+            case OutputType::INSUFFICIENT:
+                if (testConfig.executor == Executor::FENCED) {
+                    // For Executor::FENCED, the output shape must be fully specified.
+                    ASSERT_EQ(ErrorStatus::INVALID_ARGUMENT, executionStatus);
+                    return;
+                }
+                ASSERT_EQ(ErrorStatus::OUTPUT_INSUFFICIENT_SIZE, executionStatus);
+                ASSERT_EQ(outputShapes.size(), testModel.main.outputIndexes.size());
+                // Check that all returned output dimensions are at least as fully specified as the
+                // union of the information about the corresponding operand in the model and in the
+                // request. In this test, all model outputs have known rank with all dimensions
+                // unspecified, and no dimensional information is provided in the request.
+                for (uint32_t i = 0; i < outputShapes.size(); i++) {
+                    ASSERT_EQ(outputShapes[i].isSufficient, i != kInsufficientOutputIndex);
+                    const auto& actual = outputShapes[i].dimensions;
+                    const auto& golden =
+                            testModel.main.operands[testModel.main.outputIndexes[i]].dimensions;
+                    ASSERT_EQ(actual.size(), golden.size());
+                    for (uint32_t j = 0; j < actual.size(); j++) {
+                        if (actual[j] == 0) continue;
+                        EXPECT_EQ(actual[j], golden[j]) << "index: " << j;
+                    }
+                }
+                return;
+            case OutputType::MISSED_DEADLINE:
+                ASSERT_TRUE(executionStatus == ErrorStatus::MISSED_DEADLINE_TRANSIENT ||
+                            executionStatus == ErrorStatus::MISSED_DEADLINE_PERSISTENT)
+                        << "executionStatus = " << executionStatus;
+                return;
+        }
+
+        // Go through all outputs, check returned output shapes.
+        for (uint32_t i = 0; i < outputShapes.size(); i++) {
+            EXPECT_TRUE(outputShapes[i].isSufficient);
+            const auto& expect =
+                    testModel.main.operands[testModel.main.outputIndexes[i]].dimensions;
+            const auto unsignedActual = nn::toUnsigned(outputShapes[i].dimensions);
+            ASSERT_TRUE(unsignedActual.has_value());
+            const std::vector<uint32_t>& actual = unsignedActual.value();
+            EXPECT_EQ(expect, actual);
+        }
+
+        // Retrieve execution results.
+        const std::vector<TestBuffer> outputs = context.getOutputBuffers(testModel, request);
+
+        // We want "close-enough" results.
+        checkResults(testModel, outputs);
+    };
+
+    executeAndCheckResults();
+
+    // For reusable execution tests, run the execution twice.
+    if (testConfig.reusable) {
+        SCOPED_TRACE("Second execution");
+        executeAndCheckResults();
     }
-
-    // Go through all outputs, check returned output shapes.
-    for (uint32_t i = 0; i < outputShapes.size(); i++) {
-        EXPECT_TRUE(outputShapes[i].isSufficient);
-        const auto& expect = testModel.main.operands[testModel.main.outputIndexes[i]].dimensions;
-        const auto unsignedActual = nn::toUnsigned(outputShapes[i].dimensions);
-        ASSERT_TRUE(unsignedActual.has_value());
-        const std::vector<uint32_t>& actual = unsignedActual.value();
-        EXPECT_EQ(expect, actual);
-    }
-
-    // Retrieve execution results.
-    const std::vector<TestBuffer> outputs = context.getOutputBuffers(testModel, request);
-
-    // We want "close-enough" results.
-    checkResults(testModel, outputs);
 }
 
 void EvaluatePreparedModel(const std::shared_ptr<IDevice>& device,
@@ -770,6 +868,15 @@
     std::vector<bool> measureTimingList;
     std::vector<Executor> executorList;
     std::vector<MemoryType> memoryTypeList;
+    std::vector<bool> reusableList = {false};
+    std::vector<bool> useConfigList = {false};
+
+    int deviceVersion;
+    ASSERT_TRUE(device->getInterfaceVersion(&deviceVersion).isOk());
+    if (deviceVersion >= kMinAidlLevelForFL8) {
+        reusableList.push_back(true);
+        useConfigList.push_back(true);
+    }
 
     switch (testKind) {
         case TestKind::GENERAL: {
@@ -812,8 +919,16 @@
         for (const bool measureTiming : measureTimingList) {
             for (const Executor executor : executorList) {
                 for (const MemoryType memoryType : memoryTypeList) {
-                    const TestConfig testConfig(executor, measureTiming, outputType, memoryType);
-                    EvaluatePreparedModel(device, preparedModel, testModel, testConfig);
+                    for (const bool reusable : reusableList) {
+                        for (const bool useConfig : useConfigList) {
+                            if ((useConfig || executor == Executor::BURST) && reusable) continue;
+                            const TestConfig testConfig(executor, measureTiming, outputType,
+                                                        memoryType, reusable,
+                                                        /*reportSkipping=*/true, useConfig);
+                            SCOPED_TRACE(toString(testConfig));
+                            EvaluatePreparedModel(device, preparedModel, testModel, testConfig);
+                        }
+                    }
                 }
             }
         }
@@ -833,7 +948,7 @@
         for (const bool measureTiming : measureTimingList) {
             for (const Executor executor : executorList) {
                 const TestConfig testConfig(executor, measureTiming, outputType, MemoryType::ASHMEM,
-                                            /*reportSkipping=*/false);
+                                            /*reusable=*/false, /*reportSkipping=*/false);
                 bool baseSkipped = false;
                 EvaluatePreparedModel(device, preparedModel, testModel, testConfig, &baseSkipped);
                 bool coupledSkipped = false;
@@ -871,6 +986,13 @@
             createPreparedModel(device, model, &preparedModel);
             if (preparedModel == nullptr) return;
             EvaluatePreparedModel(device, preparedModel, testModel, testKind);
+            int32_t deviceVersion;
+            ASSERT_TRUE(device->getInterfaceVersion(&deviceVersion).isOk());
+            if (deviceVersion >= kMinAidlLevelForFL8) {
+                createPreparedModel(device, model, &preparedModel, /*reportSkipping*/ true,
+                                    /*useConfig*/ true);
+                EvaluatePreparedModel(device, preparedModel, testModel, testKind);
+            }
         } break;
         case TestKind::QUANTIZATION_COUPLING: {
             ASSERT_TRUE(testModel.hasQuant8CoupledOperands());
diff --git a/neuralnetworks/aidl/vts/functional/MemoryDomainTests.cpp b/neuralnetworks/aidl/vts/functional/MemoryDomainTests.cpp
index cd5475c..97760ae 100644
--- a/neuralnetworks/aidl/vts/functional/MemoryDomainTests.cpp
+++ b/neuralnetworks/aidl/vts/functional/MemoryDomainTests.cpp
@@ -204,10 +204,27 @@
         return ndk::ScopedAStatus::fromServiceSpecificError(
                 static_cast<int32_t>(ErrorStatus::GENERAL_FAILURE));
     }
+    ndk::ScopedAStatus executeSynchronouslyWithConfig(const Request&, const ExecutionConfig&,
+                                                      int64_t, ExecutionResult*) override {
+        return ndk::ScopedAStatus::fromServiceSpecificError(
+                static_cast<int32_t>(ErrorStatus::GENERAL_FAILURE));
+    }
+    ndk::ScopedAStatus executeFencedWithConfig(const Request&,
+                                               const std::vector<ndk::ScopedFileDescriptor>&,
+                                               const ExecutionConfig&, int64_t, int64_t,
+                                               FencedExecutionResult*) override {
+        return ndk::ScopedAStatus::fromServiceSpecificError(
+                static_cast<int32_t>(ErrorStatus::GENERAL_FAILURE));
+    }
     ndk::ScopedAStatus configureExecutionBurst(std::shared_ptr<IBurst>*) override {
         return ndk::ScopedAStatus::fromServiceSpecificError(
                 static_cast<int32_t>(ErrorStatus::GENERAL_FAILURE));
     }
+    ndk::ScopedAStatus createReusableExecution(const aidl_hal::Request&, const ExecutionConfig&,
+                                               std::shared_ptr<aidl_hal::IExecution>*) override {
+        return ndk::ScopedAStatus::fromServiceSpecificError(
+                static_cast<int32_t>(ErrorStatus::GENERAL_FAILURE));
+    }
 };
 
 template <typename... Args>
diff --git a/neuralnetworks/aidl/vts/functional/Utils.cpp b/neuralnetworks/aidl/vts/functional/Utils.cpp
index 325a436..efd5bca 100644
--- a/neuralnetworks/aidl/vts/functional/Utils.cpp
+++ b/neuralnetworks/aidl/vts/functional/Utils.cpp
@@ -177,6 +177,17 @@
     return os << toString(errorStatus);
 }
 
+std::string toString(MemoryType type) {
+    switch (type) {
+        case MemoryType::ASHMEM:
+            return "ASHMEM";
+        case MemoryType::BLOB_AHWB:
+            return "BLOB_AHWB";
+        case MemoryType::DEVICE:
+            return "DEVICE";
+    }
+}
+
 Request ExecutionContext::createRequest(const TestModel& testModel, MemoryType memoryType) {
     CHECK(memoryType == MemoryType::ASHMEM || memoryType == MemoryType::BLOB_AHWB);
 
diff --git a/neuralnetworks/aidl/vts/functional/Utils.h b/neuralnetworks/aidl/vts/functional/Utils.h
index ca81418..0db3f8c 100644
--- a/neuralnetworks/aidl/vts/functional/Utils.h
+++ b/neuralnetworks/aidl/vts/functional/Utils.h
@@ -111,6 +111,8 @@
 
 enum class MemoryType { ASHMEM, BLOB_AHWB, DEVICE };
 
+std::string toString(MemoryType type);
+
 // Manages the lifetime of memory resources used in an execution.
 class ExecutionContext {
     DISALLOW_COPY_AND_ASSIGN(ExecutionContext);
diff --git a/neuralnetworks/aidl/vts/functional/ValidateModel.cpp b/neuralnetworks/aidl/vts/functional/ValidateModel.cpp
index fdc7eff..931ba25 100644
--- a/neuralnetworks/aidl/vts/functional/ValidateModel.cpp
+++ b/neuralnetworks/aidl/vts/functional/ValidateModel.cpp
@@ -77,6 +77,28 @@
     ASSERT_EQ(nullptr, preparedModel.get());
 }
 
+static void validatePrepareModelWithConfig(const std::shared_ptr<IDevice>& device,
+                                           const std::string& message, const Model& model,
+                                           ExecutionPreference preference, Priority priority) {
+    SCOPED_TRACE(message + " [prepareModelWithConfig]");
+
+    std::shared_ptr<PreparedModelCallback> preparedModelCallback =
+            ndk::SharedRefBase::make<PreparedModelCallback>();
+    const auto prepareLaunchStatus = device->prepareModelWithConfig(
+            model, {preference, priority, kNoDeadline, {}, {}, kEmptyCacheToken, {}, {}},
+            preparedModelCallback);
+    ASSERT_FALSE(prepareLaunchStatus.isOk());
+    ASSERT_EQ(prepareLaunchStatus.getExceptionCode(), EX_SERVICE_SPECIFIC);
+    ASSERT_EQ(static_cast<ErrorStatus>(prepareLaunchStatus.getServiceSpecificError()),
+              ErrorStatus::INVALID_ARGUMENT);
+
+    preparedModelCallback->wait();
+    ErrorStatus prepareReturnStatus = preparedModelCallback->getStatus();
+    ASSERT_EQ(ErrorStatus::INVALID_ARGUMENT, prepareReturnStatus);
+    std::shared_ptr<IPreparedModel> preparedModel = preparedModelCallback->getPreparedModel();
+    ASSERT_EQ(nullptr, preparedModel.get());
+}
+
 static bool validExecutionPreference(ExecutionPreference preference) {
     return preference == ExecutionPreference::LOW_POWER ||
            preference == ExecutionPreference::FAST_SINGLE_ANSWER ||
@@ -103,6 +125,13 @@
     }
 
     validatePrepareModel(device, message, model, preference, priority);
+
+    int32_t aidlVersion;
+    ASSERT_TRUE(device->getInterfaceVersion(&aidlVersion).isOk());
+    if (aidlVersion >= kMinAidlLevelForFL8) {
+        // prepareModelWithConfig must satisfy all requirements enforced by prepareModel.
+        validatePrepareModelWithConfig(device, message, model, preference, priority);
+    }
 }
 
 static uint32_t addOperand(Model* model) {
diff --git a/neuralnetworks/aidl/vts/functional/ValidateRequest.cpp b/neuralnetworks/aidl/vts/functional/ValidateRequest.cpp
index 29e2471..d749841 100644
--- a/neuralnetworks/aidl/vts/functional/ValidateRequest.cpp
+++ b/neuralnetworks/aidl/vts/functional/ValidateRequest.cpp
@@ -36,6 +36,51 @@
 
 ///////////////////////// UTILITY FUNCTIONS /////////////////////////
 
+// Test request validation with reusable execution.
+static void validateReusableExecution(const std::shared_ptr<IPreparedModel>& preparedModel,
+                                      const std::string& message, const Request& request,
+                                      bool measure) {
+    // createReusableExecution
+    std::shared_ptr<IExecution> execution;
+    {
+        SCOPED_TRACE(message + " [createReusableExecution]");
+        const auto createStatus = preparedModel->createReusableExecution(
+                request, {measure, kOmittedTimeoutDuration, {}, {}}, &execution);
+        if (!createStatus.isOk()) {
+            ASSERT_EQ(createStatus.getExceptionCode(), EX_SERVICE_SPECIFIC);
+            ASSERT_EQ(static_cast<ErrorStatus>(createStatus.getServiceSpecificError()),
+                      ErrorStatus::INVALID_ARGUMENT);
+            ASSERT_EQ(nullptr, execution);
+            return;
+        } else {
+            ASSERT_NE(nullptr, execution);
+        }
+    }
+
+    // synchronous
+    {
+        SCOPED_TRACE(message + " [executeSynchronously]");
+        ExecutionResult executionResult;
+        const auto executeStatus = execution->executeSynchronously(kNoDeadline, &executionResult);
+        ASSERT_FALSE(executeStatus.isOk());
+        ASSERT_EQ(executeStatus.getExceptionCode(), EX_SERVICE_SPECIFIC);
+        ASSERT_EQ(static_cast<ErrorStatus>(executeStatus.getServiceSpecificError()),
+                  ErrorStatus::INVALID_ARGUMENT);
+    }
+
+    // fenced
+    {
+        SCOPED_TRACE(message + " [executeFenced]");
+        FencedExecutionResult executionResult;
+        const auto executeStatus =
+                execution->executeFenced({}, kNoDeadline, kNoDuration, &executionResult);
+        ASSERT_FALSE(executeStatus.isOk());
+        ASSERT_EQ(executeStatus.getExceptionCode(), EX_SERVICE_SPECIFIC);
+        ASSERT_EQ(static_cast<ErrorStatus>(executeStatus.getServiceSpecificError()),
+                  ErrorStatus::INVALID_ARGUMENT);
+    }
+}
+
 // Primary validation function. This function will take a valid request, apply a
 // mutation to it to invalidate the request, then pass it to interface calls
 // that use the request.
@@ -101,6 +146,63 @@
         ASSERT_EQ(static_cast<ErrorStatus>(executeStatus.getServiceSpecificError()),
                   ErrorStatus::INVALID_ARGUMENT);
     }
+
+    int32_t aidlVersion;
+    ASSERT_TRUE(preparedModel->getInterfaceVersion(&aidlVersion).isOk());
+    if (aidlVersion < kMinAidlLevelForFL8) {
+        return;
+    }
+
+    // validate reusable execution
+    validateReusableExecution(preparedModel, message, request, measure);
+
+    // synchronous with empty hints
+    {
+        SCOPED_TRACE(message + " [executeSynchronouslyWithConfig]");
+        ExecutionResult executionResult;
+        const auto executeStatus = preparedModel->executeSynchronouslyWithConfig(
+                request, {measure, kOmittedTimeoutDuration, {}, {}}, kNoDeadline, &executionResult);
+        ASSERT_FALSE(executeStatus.isOk());
+        ASSERT_EQ(executeStatus.getExceptionCode(), EX_SERVICE_SPECIFIC);
+        ASSERT_EQ(static_cast<ErrorStatus>(executeStatus.getServiceSpecificError()),
+                  ErrorStatus::INVALID_ARGUMENT);
+    }
+
+    // fenced with empty hints
+    {
+        SCOPED_TRACE(message + " [executeFencedWithConfig]");
+        FencedExecutionResult executionResult;
+        const auto executeStatus = preparedModel->executeFencedWithConfig(
+                request, {}, {false, kOmittedTimeoutDuration, {}, {}}, kNoDeadline, kNoDuration,
+                &executionResult);
+        ASSERT_FALSE(executeStatus.isOk());
+        ASSERT_EQ(executeStatus.getExceptionCode(), EX_SERVICE_SPECIFIC);
+        ASSERT_EQ(static_cast<ErrorStatus>(executeStatus.getServiceSpecificError()),
+                  ErrorStatus::INVALID_ARGUMENT);
+    }
+
+    // burst with empty hints
+    {
+        SCOPED_TRACE(message + " [burst executeSynchronouslyWithConfig]");
+
+        // create burst
+        std::shared_ptr<IBurst> burst;
+        auto ret = preparedModel->configureExecutionBurst(&burst);
+        ASSERT_TRUE(ret.isOk()) << ret.getDescription();
+        ASSERT_NE(nullptr, burst.get());
+
+        // use -1 for all memory identifier tokens
+        const std::vector<int64_t> slots(request.pools.size(), -1);
+
+        ExecutionResult executionResult;
+        const auto executeStatus = burst->executeSynchronouslyWithConfig(
+                request, slots, {measure, kOmittedTimeoutDuration, {}, {}}, kNoDeadline,
+                &executionResult);
+        ASSERT_FALSE(executeStatus.isOk());
+        ASSERT_EQ(executeStatus.getExceptionCode(), EX_SERVICE_SPECIFIC);
+        ASSERT_EQ(static_cast<ErrorStatus>(executeStatus.getServiceSpecificError()),
+                  ErrorStatus::INVALID_ARGUMENT);
+    }
 }
 
 std::shared_ptr<IBurst> createBurst(const std::shared_ptr<IPreparedModel>& preparedModel) {
diff --git a/neuralnetworks/aidl/vts/functional/VtsHalNeuralnetworks.cpp b/neuralnetworks/aidl/vts/functional/VtsHalNeuralnetworks.cpp
index c417356..ad93e6d 100644
--- a/neuralnetworks/aidl/vts/functional/VtsHalNeuralnetworks.cpp
+++ b/neuralnetworks/aidl/vts/functional/VtsHalNeuralnetworks.cpp
@@ -41,7 +41,8 @@
 
 // internal helper function
 void createPreparedModel(const std::shared_ptr<IDevice>& device, const Model& model,
-                         std::shared_ptr<IPreparedModel>* preparedModel, bool reportSkipping) {
+                         std::shared_ptr<IPreparedModel>* preparedModel, bool reportSkipping,
+                         bool useConfig) {
     ASSERT_NE(nullptr, preparedModel);
     *preparedModel = nullptr;
 
@@ -56,11 +57,25 @@
     // launch prepare model
     const std::shared_ptr<PreparedModelCallback> preparedModelCallback =
             ndk::SharedRefBase::make<PreparedModelCallback>();
-    const auto prepareLaunchStatus =
-            device->prepareModel(model, ExecutionPreference::FAST_SINGLE_ANSWER, kDefaultPriority,
-                                 kNoDeadline, {}, {}, kEmptyCacheToken, preparedModelCallback);
-    ASSERT_TRUE(prepareLaunchStatus.isOk()) << prepareLaunchStatus.getDescription();
-
+    if (useConfig) {
+        const auto prepareLaunchStatus =
+                device->prepareModelWithConfig(model,
+                                               {ExecutionPreference::FAST_SINGLE_ANSWER,
+                                                kDefaultPriority,
+                                                kNoDeadline,
+                                                {},
+                                                {},
+                                                kEmptyCacheToken,
+                                                {},
+                                                {}},
+                                               preparedModelCallback);
+        ASSERT_TRUE(prepareLaunchStatus.isOk()) << prepareLaunchStatus.getDescription();
+    } else {
+        const auto prepareLaunchStatus = device->prepareModel(
+                model, ExecutionPreference::FAST_SINGLE_ANSWER, kDefaultPriority, kNoDeadline, {},
+                {}, kEmptyCacheToken, preparedModelCallback);
+        ASSERT_TRUE(prepareLaunchStatus.isOk()) << prepareLaunchStatus.getDescription();
+    }
     // retrieve prepared model
     preparedModelCallback->wait();
     const ErrorStatus prepareReturnStatus = preparedModelCallback->getStatus();
diff --git a/neuralnetworks/aidl/vts/functional/VtsHalNeuralnetworks.h b/neuralnetworks/aidl/vts/functional/VtsHalNeuralnetworks.h
index 4312d3a..00d705c 100644
--- a/neuralnetworks/aidl/vts/functional/VtsHalNeuralnetworks.h
+++ b/neuralnetworks/aidl/vts/functional/VtsHalNeuralnetworks.h
@@ -30,6 +30,8 @@
 using NamedDevice = Named<std::shared_ptr<IDevice>>;
 using NeuralNetworksAidlTestParam = NamedDevice;
 
+constexpr int kMinAidlLevelForFL8 = 4;
+
 class NeuralNetworksAidlTest : public testing::TestWithParam<NeuralNetworksAidlTestParam> {
   protected:
     void SetUp() override;
@@ -49,8 +51,8 @@
 // Create an IPreparedModel object. If the model cannot be prepared,
 // "preparedModel" will be nullptr instead.
 void createPreparedModel(const std::shared_ptr<IDevice>& device, const Model& model,
-                         std::shared_ptr<IPreparedModel>* preparedModel,
-                         bool reportSkipping = true);
+                         std::shared_ptr<IPreparedModel>* preparedModel, bool reportSkipping = true,
+                         bool useConfig = false);
 
 enum class Executor { SYNC, BURST, FENCED };
 
diff --git a/neuralnetworks/utils/adapter/aidl/Android.bp b/neuralnetworks/utils/adapter/aidl/Android.bp
new file mode 100644
index 0000000..8269a3d
--- /dev/null
+++ b/neuralnetworks/utils/adapter/aidl/Android.bp
@@ -0,0 +1,42 @@
+//
+// Copyright (C) 2021 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "hardware_interfaces_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["hardware_interfaces_license"],
+}
+
+cc_library_static {
+    name: "neuralnetworks_utils_hal_adapter_aidl",
+    defaults: [
+        "neuralnetworks_use_latest_utils_hal_aidl",
+        "neuralnetworks_utils_defaults",
+    ],
+    srcs: ["src/*"],
+    local_include_dirs: ["include/nnapi/hal/aidl/"],
+    export_include_dirs: ["include"],
+    static_libs: [
+        "neuralnetworks_types",
+        "neuralnetworks_utils_hal_common",
+    ],
+    shared_libs: [
+        "libbinder_ndk",
+    ],
+}
diff --git a/neuralnetworks/utils/adapter/aidl/include/nnapi/hal/aidl/Adapter.h b/neuralnetworks/utils/adapter/aidl/include/nnapi/hal/aidl/Adapter.h
new file mode 100644
index 0000000..4c0b328
--- /dev/null
+++ b/neuralnetworks/utils/adapter/aidl/include/nnapi/hal/aidl/Adapter.h
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_ADAPTER_AIDL_ADAPTER_H
+#define ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_ADAPTER_AIDL_ADAPTER_H
+
+#include <aidl/android/hardware/neuralnetworks/BnDevice.h>
+#include <nnapi/IDevice.h>
+#include <nnapi/Types.h>
+
+#include <functional>
+#include <memory>
+
+// See hardware/interfaces/neuralnetworks/utils/README.md for more information on AIDL interface
+// lifetimes across processes and for protecting asynchronous calls across AIDL.
+
+namespace aidl::android::hardware::neuralnetworks::adapter {
+
+/**
+ * A self-contained unit of work to be executed.
+ */
+using Task = std::function<void()>;
+
+/**
+ * A type-erased executor which executes a task asynchronously.
+ *
+ * This executor is also provided an optional deadline for when the caller expects is the upper
+ * bound for the amount of time to complete the task. If needed, the Executor can retrieve the
+ * Application ID (Android User ID) by calling AIBinder_getCallingUid in android/binder_ibinder.h.
+ */
+using Executor = std::function<void(Task, ::android::nn::OptionalTimePoint)>;
+
+/**
+ * Adapt an NNAPI canonical interface object to a AIDL NN HAL interface object.
+ *
+ * The IPreparedModel object created from IDevice::prepareModel or IDevice::preparedModelFromCache
+ * must return "const nn::Model*" from IPreparedModel::getUnderlyingResource().
+ *
+ * @param device NNAPI canonical IDevice interface object to be adapted.
+ * @param executor Type-erased executor to handle executing tasks asynchronously.
+ * @return AIDL NN HAL IDevice interface object.
+ */
+std::shared_ptr<BnDevice> adapt(::android::nn::SharedDevice device, Executor executor);
+
+/**
+ * Adapt an NNAPI canonical interface object to a AIDL NN HAL interface object.
+ *
+ * The IPreparedModel object created from IDevice::prepareModel or IDevice::preparedModelFromCache
+ * must return "const nn::Model*" from IPreparedModel::getUnderlyingResource().
+ *
+ * This function uses a default executor, which will execute tasks from a detached thread.
+ *
+ * @param device NNAPI canonical IDevice interface object to be adapted.
+ * @return AIDL NN HAL IDevice interface object.
+ */
+std::shared_ptr<BnDevice> adapt(::android::nn::SharedDevice device);
+
+}  // namespace aidl::android::hardware::neuralnetworks::adapter
+
+#endif  // ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_ADAPTER_AIDL_ADAPTER_H
diff --git a/neuralnetworks/utils/adapter/aidl/include/nnapi/hal/aidl/Buffer.h b/neuralnetworks/utils/adapter/aidl/include/nnapi/hal/aidl/Buffer.h
new file mode 100644
index 0000000..701e43e
--- /dev/null
+++ b/neuralnetworks/utils/adapter/aidl/include/nnapi/hal/aidl/Buffer.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_ADAPTER_AIDL_BUFFER_H
+#define ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_ADAPTER_AIDL_BUFFER_H
+
+#include <aidl/android/hardware/neuralnetworks/BnBuffer.h>
+#include <aidl/android/hardware/neuralnetworks/Memory.h>
+#include <android/binder_auto_utils.h>
+#include <nnapi/IBuffer.h>
+
+#include <memory>
+#include <vector>
+
+// See hardware/interfaces/neuralnetworks/utils/README.md for more information on AIDL interface
+// lifetimes across processes and for protecting asynchronous calls across AIDL.
+
+namespace aidl::android::hardware::neuralnetworks::adapter {
+
+// Class that adapts nn::IBuffer to BnBuffer.
+class Buffer : public BnBuffer {
+  public:
+    explicit Buffer(::android::nn::SharedBuffer buffer);
+
+    ndk::ScopedAStatus copyFrom(const Memory& src, const std::vector<int32_t>& dimensions) override;
+    ndk::ScopedAStatus copyTo(const Memory& dst) override;
+
+  private:
+    const ::android::nn::SharedBuffer kBuffer;
+};
+
+}  // namespace aidl::android::hardware::neuralnetworks::adapter
+
+#endif  // ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_ADAPTER_AIDL_BUFFER_H
diff --git a/neuralnetworks/utils/adapter/aidl/include/nnapi/hal/aidl/Burst.h b/neuralnetworks/utils/adapter/aidl/include/nnapi/hal/aidl/Burst.h
new file mode 100644
index 0000000..8d42e2f
--- /dev/null
+++ b/neuralnetworks/utils/adapter/aidl/include/nnapi/hal/aidl/Burst.h
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_ADAPTER_AIDL_BURST_H
+#define ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_ADAPTER_AIDL_BURST_H
+
+#include <aidl/android/hardware/neuralnetworks/BnBurst.h>
+#include <aidl/android/hardware/neuralnetworks/ExecutionResult.h>
+#include <aidl/android/hardware/neuralnetworks/Request.h>
+#include <android-base/thread_annotations.h>
+#include <android/binder_auto_utils.h>
+#include <nnapi/IBurst.h>
+#include <nnapi/Types.h>
+
+#include <memory>
+#include <mutex>
+#include <unordered_map>
+#include <vector>
+
+// See hardware/interfaces/neuralnetworks/utils/README.md for more information on AIDL interface
+// lifetimes across processes and for protecting asynchronous calls across AIDL.
+
+namespace aidl::android::hardware::neuralnetworks::adapter {
+
+// Class that adapts nn::Burst to BnBurst.
+class Burst : public BnBurst {
+  public:
+    // Precondition: burst != nullptr
+    explicit Burst(::android::nn::SharedBurst burst);
+
+    ndk::ScopedAStatus executeSynchronously(const Request& request,
+                                            const std::vector<int64_t>& memoryIdentifierTokens,
+                                            bool measureTiming, int64_t deadlineNs,
+                                            int64_t loopTimeoutDurationNs,
+                                            ExecutionResult* executionResult) override;
+    ndk::ScopedAStatus executeSynchronouslyWithConfig(
+            const Request& request, const std::vector<int64_t>& memoryIdentifierTokens,
+            const ExecutionConfig& config, int64_t deadlineNs,
+            ExecutionResult* executionResult) override;
+
+    ndk::ScopedAStatus releaseMemoryResource(int64_t memoryIdentifierToken) override;
+
+    class ThreadSafeMemoryCache {
+      public:
+        using Value =
+                std::pair<::android::nn::SharedMemory, ::android::nn::IBurst::OptionalCacheHold>;
+
+        Value add(int64_t token, const ::android::nn::SharedMemory& memory,
+                  const ::android::nn::IBurst& burst) const;
+        void remove(int64_t token) const;
+
+      private:
+        mutable std::mutex mMutex;
+        mutable std::unordered_map<int64_t, Value> mCache GUARDED_BY(mMutex);
+    };
+
+  private:
+    const ::android::nn::SharedBurst kBurst;
+    const ThreadSafeMemoryCache kMemoryCache;
+};
+
+}  // namespace aidl::android::hardware::neuralnetworks::adapter
+
+#endif  // ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_ADAPTER_AIDL_BURST_H
diff --git a/neuralnetworks/utils/adapter/aidl/include/nnapi/hal/aidl/Device.h b/neuralnetworks/utils/adapter/aidl/include/nnapi/hal/aidl/Device.h
new file mode 100644
index 0000000..c94f270
--- /dev/null
+++ b/neuralnetworks/utils/adapter/aidl/include/nnapi/hal/aidl/Device.h
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_ADAPTER_AIDL_DEVICE_H
+#define ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_ADAPTER_AIDL_DEVICE_H
+
+#include "nnapi/hal/aidl/Adapter.h"
+
+#include <aidl/android/hardware/neuralnetworks/BnDevice.h>
+#include <aidl/android/hardware/neuralnetworks/BufferDesc.h>
+#include <aidl/android/hardware/neuralnetworks/BufferRole.h>
+#include <aidl/android/hardware/neuralnetworks/Capabilities.h>
+#include <aidl/android/hardware/neuralnetworks/DeviceBuffer.h>
+#include <aidl/android/hardware/neuralnetworks/DeviceType.h>
+#include <aidl/android/hardware/neuralnetworks/ExecutionPreference.h>
+#include <aidl/android/hardware/neuralnetworks/Extension.h>
+#include <aidl/android/hardware/neuralnetworks/IPreparedModelCallback.h>
+#include <aidl/android/hardware/neuralnetworks/IPreparedModelParcel.h>
+#include <aidl/android/hardware/neuralnetworks/Model.h>
+#include <aidl/android/hardware/neuralnetworks/NumberOfCacheFiles.h>
+#include <aidl/android/hardware/neuralnetworks/PrepareModelConfig.h>
+#include <aidl/android/hardware/neuralnetworks/Priority.h>
+#include <android/binder_auto_utils.h>
+#include <nnapi/IDevice.h>
+
+#include <memory>
+#include <string>
+#include <vector>
+
+// See hardware/interfaces/neuralnetworks/utils/README.md for more information on AIDL interface
+// lifetimes across processes and for protecting asynchronous calls across AIDL.
+
+namespace aidl::android::hardware::neuralnetworks::adapter {
+
+// Class that adapts nn::IDevice to BnDevice.
+class Device : public BnDevice {
+  public:
+    Device(::android::nn::SharedDevice device, Executor executor);
+
+    ndk::ScopedAStatus allocate(const BufferDesc& desc,
+                                const std::vector<IPreparedModelParcel>& preparedModels,
+                                const std::vector<BufferRole>& inputRoles,
+                                const std::vector<BufferRole>& outputRoles,
+                                DeviceBuffer* buffer) override;
+    ndk::ScopedAStatus getCapabilities(Capabilities* capabilities) override;
+    ndk::ScopedAStatus getNumberOfCacheFilesNeeded(NumberOfCacheFiles* numberOfCacheFiles) override;
+    ndk::ScopedAStatus getSupportedExtensions(std::vector<Extension>* extensions) override;
+    ndk::ScopedAStatus getSupportedOperations(const Model& model,
+                                              std::vector<bool>* supported) override;
+    ndk::ScopedAStatus getType(DeviceType* deviceType) override;
+    ndk::ScopedAStatus getVersionString(std::string* version) override;
+    ndk::ScopedAStatus prepareModel(
+            const Model& model, ExecutionPreference preference, Priority priority,
+            int64_t deadlineNs, const std::vector<ndk::ScopedFileDescriptor>& modelCache,
+            const std::vector<ndk::ScopedFileDescriptor>& dataCache,
+            const std::vector<uint8_t>& token,
+            const std::shared_ptr<IPreparedModelCallback>& callback) override;
+    ndk::ScopedAStatus prepareModelFromCache(
+            int64_t deadlineNs, const std::vector<ndk::ScopedFileDescriptor>& modelCache,
+            const std::vector<ndk::ScopedFileDescriptor>& dataCache,
+            const std::vector<uint8_t>& token,
+            const std::shared_ptr<IPreparedModelCallback>& callback) override;
+    ndk::ScopedAStatus prepareModelWithConfig(
+            const Model& model, const PrepareModelConfig& config,
+            const std::shared_ptr<IPreparedModelCallback>& callback) override;
+
+  protected:
+    const ::android::nn::SharedDevice kDevice;
+    const Executor kExecutor;
+};
+
+}  // namespace aidl::android::hardware::neuralnetworks::adapter
+
+#endif  // ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_ADAPTER_AIDL_DEVICE_H
diff --git a/neuralnetworks/utils/adapter/aidl/include/nnapi/hal/aidl/Execution.h b/neuralnetworks/utils/adapter/aidl/include/nnapi/hal/aidl/Execution.h
new file mode 100644
index 0000000..6a9ac57
--- /dev/null
+++ b/neuralnetworks/utils/adapter/aidl/include/nnapi/hal/aidl/Execution.h
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_ADAPTER_AIDL_EXECUTION_H
+#define ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_ADAPTER_AIDL_EXECUTION_H
+
+#include "nnapi/hal/aidl/Adapter.h"
+
+#include <aidl/android/hardware/neuralnetworks/BnExecution.h>
+#include <aidl/android/hardware/neuralnetworks/ExecutionResult.h>
+#include <aidl/android/hardware/neuralnetworks/FencedExecutionResult.h>
+#include <aidl/android/hardware/neuralnetworks/IExecution.h>
+#include <aidl/android/hardware/neuralnetworks/Request.h>
+#include <android/binder_auto_utils.h>
+#include <nnapi/IExecution.h>
+#include <nnapi/Types.h>
+
+#include <memory>
+#include <vector>
+
+// See hardware/interfaces/neuralnetworks/utils/README.md for more information on AIDL interface
+// lifetimes across processes and for protecting asynchronous calls across AIDL.
+
+namespace aidl::android::hardware::neuralnetworks::adapter {
+
+// Class that adapts nn::IExecution to BnExecution.
+class Execution : public BnExecution {
+  public:
+    explicit Execution(::android::nn::SharedExecution execution);
+
+    ndk::ScopedAStatus executeSynchronously(int64_t deadlineNs,
+                                            ExecutionResult* executionResult) override;
+    ndk::ScopedAStatus executeFenced(const std::vector<ndk::ScopedFileDescriptor>& waitFor,
+                                     int64_t deadlineNs, int64_t durationNs,
+                                     FencedExecutionResult* fencedExecutionResult) override;
+
+  protected:
+    const ::android::nn::SharedExecution kExecution;
+};
+
+}  // namespace aidl::android::hardware::neuralnetworks::adapter
+
+#endif  // ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_ADAPTER_AIDL_EXECUTION_H
diff --git a/neuralnetworks/utils/adapter/aidl/include/nnapi/hal/aidl/PreparedModel.h b/neuralnetworks/utils/adapter/aidl/include/nnapi/hal/aidl/PreparedModel.h
new file mode 100644
index 0000000..d1359d6
--- /dev/null
+++ b/neuralnetworks/utils/adapter/aidl/include/nnapi/hal/aidl/PreparedModel.h
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_ADAPTER_AIDL_PREPARED_MDOEL_H
+#define ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_ADAPTER_AIDL_PREPARED_MDOEL_H
+
+#include "nnapi/hal/aidl/Adapter.h"
+
+#include <aidl/android/hardware/neuralnetworks/BnPreparedModel.h>
+#include <aidl/android/hardware/neuralnetworks/ExecutionResult.h>
+#include <aidl/android/hardware/neuralnetworks/FencedExecutionResult.h>
+#include <aidl/android/hardware/neuralnetworks/IBurst.h>
+#include <aidl/android/hardware/neuralnetworks/IExecution.h>
+#include <aidl/android/hardware/neuralnetworks/Request.h>
+#include <android/binder_auto_utils.h>
+#include <nnapi/IPreparedModel.h>
+#include <nnapi/Types.h>
+
+#include <memory>
+#include <vector>
+
+// See hardware/interfaces/neuralnetworks/utils/README.md for more information on AIDL interface
+// lifetimes across processes and for protecting asynchronous calls across AIDL.
+
+namespace aidl::android::hardware::neuralnetworks::adapter {
+
+// Class that adapts nn::IPreparedModel to BnPreparedModel.
+class PreparedModel : public BnPreparedModel {
+  public:
+    explicit PreparedModel(::android::nn::SharedPreparedModel preparedModel);
+
+    ndk::ScopedAStatus executeSynchronously(const Request& request, bool measureTiming,
+                                            int64_t deadlineNs, int64_t loopTimeoutDurationNs,
+                                            ExecutionResult* executionResult) override;
+    ndk::ScopedAStatus executeFenced(const Request& request,
+                                     const std::vector<ndk::ScopedFileDescriptor>& waitFor,
+                                     bool measureTiming, int64_t deadlineNs,
+                                     int64_t loopTimeoutDurationNs, int64_t durationNs,
+                                     FencedExecutionResult* executionResult) override;
+    ndk::ScopedAStatus configureExecutionBurst(std::shared_ptr<IBurst>* burst) override;
+    ndk::ScopedAStatus createReusableExecution(const Request& request,
+                                               const ExecutionConfig& config,
+                                               std::shared_ptr<IExecution>* execution) override;
+    ndk::ScopedAStatus executeSynchronouslyWithConfig(const Request& request,
+                                                      const ExecutionConfig& config,
+                                                      int64_t deadlineNs,
+                                                      ExecutionResult* executionResult) override;
+    ndk::ScopedAStatus executeFencedWithConfig(
+            const Request& request, const std::vector<ndk::ScopedFileDescriptor>& waitFor,
+            const ExecutionConfig& config, int64_t deadlineNs, int64_t durationNs,
+            FencedExecutionResult* executionResult) override;
+
+    ::android::nn::SharedPreparedModel getUnderlyingPreparedModel() const;
+
+  protected:
+    const ::android::nn::SharedPreparedModel kPreparedModel;
+};
+
+}  // namespace aidl::android::hardware::neuralnetworks::adapter
+
+#endif  // ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_ADAPTER_AIDL_PREPARED_MDOEL_H
diff --git a/neuralnetworks/utils/adapter/aidl/src/Adapter.cpp b/neuralnetworks/utils/adapter/aidl/src/Adapter.cpp
new file mode 100644
index 0000000..d0b56e8
--- /dev/null
+++ b/neuralnetworks/utils/adapter/aidl/src/Adapter.cpp
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Adapter.h"
+
+#include "Device.h"
+
+#include <aidl/android/hardware/neuralnetworks/BnDevice.h>
+#include <android/binder_interface_utils.h>
+#include <nnapi/IDevice.h>
+#include <nnapi/Types.h>
+
+#include <functional>
+#include <memory>
+#include <thread>
+
+// See hardware/interfaces/neuralnetworks/utils/README.md for more information on AIDL interface
+// lifetimes across processes and for protecting asynchronous calls across AIDL.
+
+namespace aidl::android::hardware::neuralnetworks::adapter {
+
+std::shared_ptr<BnDevice> adapt(::android::nn::SharedDevice device, Executor executor) {
+    return ndk::SharedRefBase::make<Device>(std::move(device), std::move(executor));
+}
+
+std::shared_ptr<BnDevice> adapt(::android::nn::SharedDevice device) {
+    Executor defaultExecutor = [](Task task, ::android::nn::OptionalTimePoint /*deadline*/) {
+        std::thread(std::move(task)).detach();
+    };
+    return adapt(std::move(device), std::move(defaultExecutor));
+}
+
+}  // namespace aidl::android::hardware::neuralnetworks::adapter
diff --git a/neuralnetworks/utils/adapter/aidl/src/Buffer.cpp b/neuralnetworks/utils/adapter/aidl/src/Buffer.cpp
new file mode 100644
index 0000000..c15ab65
--- /dev/null
+++ b/neuralnetworks/utils/adapter/aidl/src/Buffer.cpp
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Buffer.h"
+
+#include <aidl/android/hardware/neuralnetworks/BnBuffer.h>
+#include <aidl/android/hardware/neuralnetworks/Memory.h>
+#include <android-base/logging.h>
+#include <android/binder_auto_utils.h>
+#include <nnapi/IBuffer.h>
+#include <nnapi/Result.h>
+#include <nnapi/Types.h>
+#include <nnapi/hal/aidl/Conversions.h>
+
+namespace aidl::android::hardware::neuralnetworks::adapter {
+namespace {
+
+template <typename Type>
+auto convertInput(const Type& object) -> decltype(nn::convert(std::declval<Type>())) {
+    auto result = nn::convert(object);
+    if (!result.has_value()) {
+        result.error().code = nn::ErrorStatus::INVALID_ARGUMENT;
+    }
+    return result;
+}
+
+nn::GeneralResult<std::vector<uint32_t>> inputToUnsigned(const std::vector<int32_t>& dims) {
+    auto result = nn::toUnsigned(dims);
+    if (!result.has_value()) {
+        result.error().code = nn::ErrorStatus::INVALID_ARGUMENT;
+    }
+    return result;
+}
+
+nn::GeneralResult<void> copyTo(const nn::IBuffer& buffer, const Memory& dst) {
+    const auto nnDst = NN_TRY(convertInput(dst));
+    return buffer.copyTo(nnDst);
+}
+
+nn::GeneralResult<void> copyFrom(const nn::IBuffer& buffer, const Memory& src,
+                                 const std::vector<int32_t>& dimensions) {
+    const auto nnSrc = NN_TRY(convertInput(src));
+    const auto nnDims = NN_TRY(inputToUnsigned(dimensions));
+    return buffer.copyFrom(nnSrc, nnDims);
+}
+
+}  // namespace
+
+Buffer::Buffer(nn::SharedBuffer buffer) : kBuffer(std::move(buffer)) {
+    CHECK(kBuffer != nullptr);
+}
+
+ndk::ScopedAStatus Buffer::copyTo(const Memory& dst) {
+    const auto result = adapter::copyTo(*kBuffer, dst);
+    if (!result.has_value()) {
+        const auto& [message, code] = result.error();
+        const auto aidlCode = utils::convert(code).value_or(ErrorStatus::GENERAL_FAILURE);
+        return ndk::ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                static_cast<int32_t>(aidlCode), message.c_str());
+    }
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus Buffer::copyFrom(const Memory& src, const std::vector<int32_t>& dimensions) {
+    const auto result = adapter::copyFrom(*kBuffer, src, dimensions);
+    if (!result.has_value()) {
+        const auto& [message, code] = result.error();
+        const auto aidlCode = utils::convert(code).value_or(ErrorStatus::GENERAL_FAILURE);
+        return ndk::ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                static_cast<int32_t>(aidlCode), message.c_str());
+    }
+    return ndk::ScopedAStatus::ok();
+}
+
+}  // namespace aidl::android::hardware::neuralnetworks::adapter
diff --git a/neuralnetworks/utils/adapter/aidl/src/Burst.cpp b/neuralnetworks/utils/adapter/aidl/src/Burst.cpp
new file mode 100644
index 0000000..a4a80fa
--- /dev/null
+++ b/neuralnetworks/utils/adapter/aidl/src/Burst.cpp
@@ -0,0 +1,199 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Burst.h"
+
+#include <android-base/logging.h>
+#include <android-base/thread_annotations.h>
+#include <android/binder_auto_utils.h>
+#include <nnapi/IBurst.h>
+#include <nnapi/Result.h>
+#include <nnapi/Types.h>
+#include <nnapi/Validation.h>
+#include <nnapi/hal/aidl/Conversions.h>
+#include <nnapi/hal/aidl/Utils.h>
+
+#include <algorithm>
+#include <chrono>
+#include <memory>
+#include <mutex>
+#include <unordered_map>
+#include <utility>
+#include <variant>
+
+namespace aidl::android::hardware::neuralnetworks::adapter {
+namespace {
+
+using Value = Burst::ThreadSafeMemoryCache::Value;
+
+template <typename Type>
+auto convertInput(const Type& object) -> decltype(nn::convert(std::declval<Type>())) {
+    auto result = nn::convert(object);
+    if (!result.has_value()) {
+        result.error().code = nn::ErrorStatus::INVALID_ARGUMENT;
+    }
+    return result;
+}
+
+nn::Duration makeDuration(int64_t durationNs) {
+    return nn::Duration(std::chrono::nanoseconds(durationNs));
+}
+
+nn::GeneralResult<nn::OptionalDuration> makeOptionalDuration(int64_t durationNs) {
+    if (durationNs < -1) {
+        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Invalid duration " << durationNs;
+    }
+    return durationNs < 0 ? nn::OptionalDuration{} : makeDuration(durationNs);
+}
+
+nn::GeneralResult<nn::OptionalTimePoint> makeOptionalTimePoint(int64_t durationNs) {
+    if (durationNs < -1) {
+        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Invalid time point " << durationNs;
+    }
+    return durationNs < 0 ? nn::OptionalTimePoint{} : nn::TimePoint(makeDuration(durationNs));
+}
+
+std::vector<nn::IBurst::OptionalCacheHold> ensureAllMemoriesAreCached(
+        nn::Request* request, const std::vector<int64_t>& memoryIdentifierTokens,
+        const nn::IBurst& burst, const Burst::ThreadSafeMemoryCache& cache) {
+    std::vector<nn::IBurst::OptionalCacheHold> holds;
+    holds.reserve(memoryIdentifierTokens.size());
+
+    for (size_t i = 0; i < memoryIdentifierTokens.size(); ++i) {
+        const auto& pool = request->pools[i];
+        const auto token = memoryIdentifierTokens[i];
+        constexpr int64_t kNoToken = -1;
+        if (token == kNoToken || !std::holds_alternative<nn::SharedMemory>(pool)) {
+            continue;
+        }
+
+        const auto& memory = std::get<nn::SharedMemory>(pool);
+        auto [storedMemory, hold] = cache.add(token, memory, burst);
+
+        request->pools[i] = std::move(storedMemory);
+        holds.push_back(std::move(hold));
+    }
+
+    return holds;
+}
+
+nn::ExecutionResult<ExecutionResult> executeSynchronously(
+        const nn::IBurst& burst, const Burst::ThreadSafeMemoryCache& cache, const Request& request,
+        const std::vector<int64_t>& memoryIdentifierTokens, bool measureTiming, int64_t deadlineNs,
+        int64_t loopTimeoutDurationNs, const std::vector<TokenValuePair>& hints,
+        const std::vector<ExtensionNameAndPrefix>& extensionNameToPrefix) {
+    if (request.pools.size() != memoryIdentifierTokens.size()) {
+        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT)
+               << "request.pools.size() != memoryIdentifierTokens.size()";
+    }
+    if (!std::all_of(memoryIdentifierTokens.begin(), memoryIdentifierTokens.end(),
+                     [](int64_t token) { return token >= -1; })) {
+        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Invalid memoryIdentifierTokens";
+    }
+
+    auto nnRequest = NN_TRY(convertInput(request));
+    const auto nnMeasureTiming = measureTiming ? nn::MeasureTiming::YES : nn::MeasureTiming::NO;
+    const auto nnDeadline = NN_TRY(makeOptionalTimePoint(deadlineNs));
+    const auto nnLoopTimeoutDuration = NN_TRY(makeOptionalDuration(loopTimeoutDurationNs));
+    auto nnHints = NN_TRY(convertInput(hints));
+    auto nnExtensionNameToPrefix = NN_TRY(convertInput(extensionNameToPrefix));
+
+    const auto hold = ensureAllMemoriesAreCached(&nnRequest, memoryIdentifierTokens, burst, cache);
+
+    const auto result = burst.execute(nnRequest, nnMeasureTiming, nnDeadline, nnLoopTimeoutDuration,
+                                      nnHints, nnExtensionNameToPrefix);
+
+    if (!result.ok() && result.error().code == nn::ErrorStatus::OUTPUT_INSUFFICIENT_SIZE) {
+        const auto& [message, code, outputShapes] = result.error();
+        return ExecutionResult{.outputSufficientSize = false,
+                               .outputShapes = utils::convert(outputShapes).value(),
+                               .timing = {.timeInDriverNs = -1, .timeOnDeviceNs = -1}};
+    }
+
+    const auto& [outputShapes, timing] = NN_TRY(result);
+    return ExecutionResult{.outputSufficientSize = true,
+                           .outputShapes = utils::convert(outputShapes).value(),
+                           .timing = utils::convert(timing).value()};
+}
+
+}  // namespace
+
+Value Burst::ThreadSafeMemoryCache::add(int64_t token, const nn::SharedMemory& memory,
+                                        const nn::IBurst& burst) const {
+    std::lock_guard guard(mMutex);
+    if (const auto it = mCache.find(token); it != mCache.end()) {
+        return it->second;
+    }
+    auto hold = burst.cacheMemory(memory);
+    auto [it, _] = mCache.emplace(token, std::make_pair(memory, std::move(hold)));
+    return it->second;
+}
+
+void Burst::ThreadSafeMemoryCache::remove(int64_t token) const {
+    std::lock_guard guard(mMutex);
+    mCache.erase(token);
+}
+
+Burst::Burst(nn::SharedBurst burst) : kBurst(std::move(burst)) {
+    CHECK(kBurst != nullptr);
+}
+
+ndk::ScopedAStatus Burst::executeSynchronously(const Request& request,
+                                               const std::vector<int64_t>& memoryIdentifierTokens,
+                                               bool measureTiming, int64_t deadlineNs,
+                                               int64_t loopTimeoutDurationNs,
+                                               ExecutionResult* executionResult) {
+    auto result =
+            adapter::executeSynchronously(*kBurst, kMemoryCache, request, memoryIdentifierTokens,
+                                          measureTiming, deadlineNs, loopTimeoutDurationNs, {}, {});
+    if (!result.has_value()) {
+        auto [message, code, _] = std::move(result).error();
+        const auto aidlCode = utils::convert(code).value_or(ErrorStatus::GENERAL_FAILURE);
+        return ndk::ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                static_cast<int32_t>(aidlCode), message.c_str());
+    }
+    *executionResult = std::move(result).value();
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus Burst::executeSynchronouslyWithConfig(
+        const Request& request, const std::vector<int64_t>& memoryIdentifierTokens,
+        const ExecutionConfig& config, int64_t deadlineNs, ExecutionResult* executionResult) {
+    auto result = adapter::executeSynchronously(
+            *kBurst, kMemoryCache, request, memoryIdentifierTokens, config.measureTiming,
+            deadlineNs, config.loopTimeoutDurationNs, config.executionHints,
+            config.extensionNameToPrefix);
+    if (!result.has_value()) {
+        auto [message, code, _] = std::move(result).error();
+        const auto aidlCode = utils::convert(code).value_or(ErrorStatus::GENERAL_FAILURE);
+        return ndk::ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                static_cast<int32_t>(aidlCode), message.c_str());
+    }
+    *executionResult = std::move(result).value();
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus Burst::releaseMemoryResource(int64_t memoryIdentifierToken) {
+    if (memoryIdentifierToken < -1) {
+        return ndk::ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                static_cast<int32_t>(ErrorStatus::INVALID_ARGUMENT),
+                "Invalid memoryIdentifierToken");
+    }
+    kMemoryCache.remove(memoryIdentifierToken);
+    return ndk::ScopedAStatus::ok();
+}
+
+}  // namespace aidl::android::hardware::neuralnetworks::adapter
diff --git a/neuralnetworks/utils/adapter/aidl/src/Device.cpp b/neuralnetworks/utils/adapter/aidl/src/Device.cpp
new file mode 100644
index 0000000..84aaddb
--- /dev/null
+++ b/neuralnetworks/utils/adapter/aidl/src/Device.cpp
@@ -0,0 +1,327 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Device.h"
+
+#include "Adapter.h"
+#include "Buffer.h"
+#include "PreparedModel.h"
+
+#include <aidl/android/hardware/neuralnetworks/BnDevice.h>
+#include <aidl/android/hardware/neuralnetworks/BufferDesc.h>
+#include <aidl/android/hardware/neuralnetworks/BufferRole.h>
+#include <aidl/android/hardware/neuralnetworks/DeviceBuffer.h>
+#include <aidl/android/hardware/neuralnetworks/DeviceType.h>
+#include <aidl/android/hardware/neuralnetworks/ErrorStatus.h>
+#include <aidl/android/hardware/neuralnetworks/ExecutionPreference.h>
+#include <aidl/android/hardware/neuralnetworks/Extension.h>
+#include <aidl/android/hardware/neuralnetworks/IPreparedModelCallback.h>
+#include <aidl/android/hardware/neuralnetworks/IPreparedModelParcel.h>
+#include <aidl/android/hardware/neuralnetworks/Model.h>
+#include <aidl/android/hardware/neuralnetworks/NumberOfCacheFiles.h>
+#include <aidl/android/hardware/neuralnetworks/Priority.h>
+#include <android-base/logging.h>
+#include <android/binder_auto_utils.h>
+#include <android/binder_interface_utils.h>
+#include <nnapi/IDevice.h>
+#include <nnapi/Result.h>
+#include <nnapi/TypeUtils.h>
+#include <nnapi/Types.h>
+#include <nnapi/hal/aidl/Conversions.h>
+
+#include <chrono>
+#include <memory>
+#include <string>
+#include <vector>
+
+namespace aidl::android::hardware::neuralnetworks::adapter {
+namespace {
+
+template <typename Type>
+auto convertInput(const Type& object) -> decltype(nn::convert(std::declval<Type>())) {
+    auto result = nn::convert(object);
+    if (!result.has_value()) {
+        result.error().code = nn::ErrorStatus::INVALID_ARGUMENT;
+    }
+    return result;
+}
+
+nn::Duration makeDuration(int64_t durationNs) {
+    return nn::Duration(std::chrono::nanoseconds(durationNs));
+}
+
+nn::GeneralResult<nn::OptionalTimePoint> makeOptionalTimePoint(int64_t durationNs) {
+    if (durationNs < -1) {
+        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Invalid time point " << durationNs;
+    }
+    return durationNs < 0 ? nn::OptionalTimePoint{} : nn::TimePoint(makeDuration(durationNs));
+}
+
+nn::GeneralResult<nn::CacheToken> convertCacheToken(const std::vector<uint8_t>& token) {
+    nn::CacheToken nnToken;
+    if (token.size() != nnToken.size()) {
+        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Invalid token";
+    }
+    std::copy(token.begin(), token.end(), nnToken.begin());
+    return nnToken;
+}
+
+nn::GeneralResult<nn::SharedPreparedModel> downcast(const IPreparedModelParcel& preparedModel) {
+    if (preparedModel.preparedModel == nullptr) {
+        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "preparedModel is nullptr";
+    }
+    if (preparedModel.preparedModel->isRemote()) {
+        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Cannot convert remote models";
+    }
+
+    // This static_cast is safe because adapter::PreparedModel is the only class that implements
+    // the IPreparedModel interface in the adapter service code.
+    const auto* casted = static_cast<const PreparedModel*>(preparedModel.preparedModel.get());
+    return casted->getUnderlyingPreparedModel();
+}
+
+nn::GeneralResult<std::vector<nn::SharedPreparedModel>> downcastAll(
+        const std::vector<IPreparedModelParcel>& preparedModels) {
+    std::vector<nn::SharedPreparedModel> canonical;
+    canonical.reserve(preparedModels.size());
+    for (const auto& preparedModel : preparedModels) {
+        canonical.push_back(NN_TRY(downcast(preparedModel)));
+    }
+    return canonical;
+}
+
+nn::GeneralResult<DeviceBuffer> allocate(const nn::IDevice& device, const BufferDesc& desc,
+                                         const std::vector<IPreparedModelParcel>& preparedModels,
+                                         const std::vector<BufferRole>& inputRoles,
+                                         const std::vector<BufferRole>& outputRoles) {
+    auto nnDesc = NN_TRY(convertInput(desc));
+    auto nnPreparedModels = NN_TRY(downcastAll(preparedModels));
+    auto nnInputRoles = NN_TRY(convertInput(inputRoles));
+    auto nnOutputRoles = NN_TRY(convertInput(outputRoles));
+
+    auto buffer = NN_TRY(device.allocate(nnDesc, nnPreparedModels, nnInputRoles, nnOutputRoles));
+    CHECK(buffer != nullptr);
+
+    const nn::Request::MemoryDomainToken token = buffer->getToken();
+    auto aidlBuffer = ndk::SharedRefBase::make<Buffer>(std::move(buffer));
+    return DeviceBuffer{.buffer = std::move(aidlBuffer), .token = static_cast<int32_t>(token)};
+}
+
+nn::GeneralResult<std::vector<bool>> getSupportedOperations(const nn::IDevice& device,
+                                                            const Model& model) {
+    const auto nnModel = NN_TRY(convertInput(model));
+    return device.getSupportedOperations(nnModel);
+}
+
+using PrepareModelResult = nn::GeneralResult<nn::SharedPreparedModel>;
+
+std::shared_ptr<PreparedModel> adaptPreparedModel(nn::SharedPreparedModel preparedModel) {
+    if (preparedModel == nullptr) {
+        return nullptr;
+    }
+    return ndk::SharedRefBase::make<PreparedModel>(std::move(preparedModel));
+}
+
+void notify(IPreparedModelCallback* callback, PrepareModelResult result) {
+    if (!result.has_value()) {
+        const auto& [message, status] = result.error();
+        LOG(ERROR) << message;
+        const auto aidlCode = utils::convert(status).value_or(ErrorStatus::GENERAL_FAILURE);
+        callback->notify(aidlCode, nullptr);
+    } else {
+        auto preparedModel = std::move(result).value();
+        auto aidlPreparedModel = adaptPreparedModel(std::move(preparedModel));
+        callback->notify(ErrorStatus::NONE, std::move(aidlPreparedModel));
+    }
+}
+
+nn::GeneralResult<void> prepareModel(
+        const nn::SharedDevice& device, const Executor& executor, const Model& model,
+        ExecutionPreference preference, Priority priority, int64_t deadlineNs,
+        const std::vector<ndk::ScopedFileDescriptor>& modelCache,
+        const std::vector<ndk::ScopedFileDescriptor>& dataCache, const std::vector<uint8_t>& token,
+        const std::vector<TokenValuePair>& hints,
+        const std::vector<ExtensionNameAndPrefix>& extensionNameToPrefix,
+        const std::shared_ptr<IPreparedModelCallback>& callback) {
+    if (callback.get() == nullptr) {
+        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Invalid callback";
+    }
+
+    auto nnModel = NN_TRY(convertInput(model));
+    const auto nnPreference = NN_TRY(convertInput(preference));
+    const auto nnPriority = NN_TRY(convertInput(priority));
+    const auto nnDeadline = NN_TRY(makeOptionalTimePoint(deadlineNs));
+    auto nnModelCache = NN_TRY(convertInput(modelCache));
+    auto nnDataCache = NN_TRY(convertInput(dataCache));
+    const auto nnToken = NN_TRY(convertCacheToken(token));
+    auto nnHints = NN_TRY(convertInput(hints));
+    auto nnExtensionNameToPrefix = NN_TRY(convertInput(extensionNameToPrefix));
+
+    Task task = [device, nnModel = std::move(nnModel), nnPreference, nnPriority, nnDeadline,
+                 nnModelCache = std::move(nnModelCache), nnDataCache = std::move(nnDataCache),
+                 nnToken, nnHints = std::move(nnHints),
+                 nnExtensionNameToPrefix = std::move(nnExtensionNameToPrefix), callback] {
+        auto result =
+                device->prepareModel(nnModel, nnPreference, nnPriority, nnDeadline, nnModelCache,
+                                     nnDataCache, nnToken, nnHints, nnExtensionNameToPrefix);
+        notify(callback.get(), std::move(result));
+    };
+    executor(std::move(task), nnDeadline);
+
+    return {};
+}
+
+nn::GeneralResult<void> prepareModelFromCache(
+        const nn::SharedDevice& device, const Executor& executor, int64_t deadlineNs,
+        const std::vector<ndk::ScopedFileDescriptor>& modelCache,
+        const std::vector<ndk::ScopedFileDescriptor>& dataCache, const std::vector<uint8_t>& token,
+        const std::shared_ptr<IPreparedModelCallback>& callback) {
+    if (callback.get() == nullptr) {
+        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Invalid callback";
+    }
+
+    const auto nnDeadline = NN_TRY(makeOptionalTimePoint(deadlineNs));
+    auto nnModelCache = NN_TRY(convertInput(modelCache));
+    auto nnDataCache = NN_TRY(convertInput(dataCache));
+    const auto nnToken = NN_TRY(convertCacheToken(token));
+
+    auto task = [device, nnDeadline, nnModelCache = std::move(nnModelCache),
+                 nnDataCache = std::move(nnDataCache), nnToken, callback] {
+        auto result = device->prepareModelFromCache(nnDeadline, nnModelCache, nnDataCache, nnToken);
+        notify(callback.get(), std::move(result));
+    };
+    executor(std::move(task), nnDeadline);
+
+    return {};
+}
+
+}  // namespace
+
+Device::Device(::android::nn::SharedDevice device, Executor executor)
+    : kDevice(std::move(device)), kExecutor(std::move(executor)) {
+    CHECK(kDevice != nullptr);
+    CHECK(kExecutor != nullptr);
+}
+
+ndk::ScopedAStatus Device::allocate(const BufferDesc& desc,
+                                    const std::vector<IPreparedModelParcel>& preparedModels,
+                                    const std::vector<BufferRole>& inputRoles,
+                                    const std::vector<BufferRole>& outputRoles,
+                                    DeviceBuffer* buffer) {
+    auto result = adapter::allocate(*kDevice, desc, preparedModels, inputRoles, outputRoles);
+    if (!result.has_value()) {
+        const auto& [message, code] = result.error();
+        const auto aidlCode = utils::convert(code).value_or(ErrorStatus::GENERAL_FAILURE);
+        return ndk::ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                static_cast<int32_t>(aidlCode), message.c_str());
+    }
+    *buffer = std::move(result).value();
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus Device::getCapabilities(Capabilities* capabilities) {
+    *capabilities = utils::convert(kDevice->getCapabilities()).value();
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus Device::getNumberOfCacheFilesNeeded(NumberOfCacheFiles* numberOfCacheFiles) {
+    const auto [numModelCache, numDataCache] = kDevice->getNumberOfCacheFilesNeeded();
+    *numberOfCacheFiles = NumberOfCacheFiles{.numModelCache = static_cast<int32_t>(numModelCache),
+                                             .numDataCache = static_cast<int32_t>(numDataCache)};
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus Device::getSupportedExtensions(std::vector<Extension>* extensions) {
+    *extensions = utils::convert(kDevice->getSupportedExtensions()).value();
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus Device::getSupportedOperations(const Model& model,
+                                                  std::vector<bool>* supported) {
+    auto result = adapter::getSupportedOperations(*kDevice, model);
+    if (!result.has_value()) {
+        const auto& [message, code] = result.error();
+        const auto aidlCode = utils::convert(code).value_or(ErrorStatus::GENERAL_FAILURE);
+        return ndk::ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                static_cast<int32_t>(aidlCode), message.c_str());
+    }
+    *supported = std::move(result).value();
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus Device::getType(DeviceType* deviceType) {
+    *deviceType = utils::convert(kDevice->getType()).value();
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus Device::getVersionString(std::string* version) {
+    *version = kDevice->getVersionString();
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus Device::prepareModel(const Model& model, ExecutionPreference preference,
+                                        Priority priority, int64_t deadlineNs,
+                                        const std::vector<ndk::ScopedFileDescriptor>& modelCache,
+                                        const std::vector<ndk::ScopedFileDescriptor>& dataCache,
+                                        const std::vector<uint8_t>& token,
+                                        const std::shared_ptr<IPreparedModelCallback>& callback) {
+    const auto result =
+            adapter::prepareModel(kDevice, kExecutor, model, preference, priority, deadlineNs,
+                                  modelCache, dataCache, token, {}, {}, callback);
+    if (!result.has_value()) {
+        const auto& [message, code] = result.error();
+        const auto aidlCode = utils::convert(code).value_or(ErrorStatus::GENERAL_FAILURE);
+        callback->notify(aidlCode, nullptr);
+        return ndk::ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                static_cast<int32_t>(aidlCode), message.c_str());
+    }
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus Device::prepareModelFromCache(
+        int64_t deadlineNs, const std::vector<ndk::ScopedFileDescriptor>& modelCache,
+        const std::vector<ndk::ScopedFileDescriptor>& dataCache, const std::vector<uint8_t>& token,
+        const std::shared_ptr<IPreparedModelCallback>& callback) {
+    const auto result = adapter::prepareModelFromCache(kDevice, kExecutor, deadlineNs, modelCache,
+                                                       dataCache, token, callback);
+    if (!result.has_value()) {
+        const auto& [message, code] = result.error();
+        const auto aidlCode = utils::convert(code).value_or(ErrorStatus::GENERAL_FAILURE);
+        callback->notify(aidlCode, nullptr);
+        return ndk::ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                static_cast<int32_t>(aidlCode), message.c_str());
+    }
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus Device::prepareModelWithConfig(
+        const Model& model, const PrepareModelConfig& config,
+        const std::shared_ptr<IPreparedModelCallback>& callback) {
+    const auto result = adapter::prepareModel(
+            kDevice, kExecutor, model, config.preference, config.priority, config.deadlineNs,
+            config.modelCache, config.dataCache, config.cacheToken, config.compilationHints,
+            config.extensionNameToPrefix, callback);
+    if (!result.has_value()) {
+        const auto& [message, code] = result.error();
+        const auto aidlCode = utils::convert(code).value_or(ErrorStatus::GENERAL_FAILURE);
+        callback->notify(aidlCode, nullptr);
+        return ndk::ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                static_cast<int32_t>(aidlCode), message.c_str());
+    }
+    return ndk::ScopedAStatus::ok();
+}
+
+}  // namespace aidl::android::hardware::neuralnetworks::adapter
diff --git a/neuralnetworks/utils/adapter/aidl/src/PreparedModel.cpp b/neuralnetworks/utils/adapter/aidl/src/PreparedModel.cpp
new file mode 100644
index 0000000..790558f
--- /dev/null
+++ b/neuralnetworks/utils/adapter/aidl/src/PreparedModel.cpp
@@ -0,0 +1,371 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "PreparedModel.h"
+
+#include "Burst.h"
+#include "Execution.h"
+
+#include <aidl/android/hardware/neuralnetworks/BnFencedExecutionCallback.h>
+#include <aidl/android/hardware/neuralnetworks/BnPreparedModel.h>
+#include <aidl/android/hardware/neuralnetworks/ExecutionResult.h>
+#include <aidl/android/hardware/neuralnetworks/FencedExecutionResult.h>
+#include <aidl/android/hardware/neuralnetworks/IBurst.h>
+#include <aidl/android/hardware/neuralnetworks/Request.h>
+#include <android-base/logging.h>
+#include <android/binder_auto_utils.h>
+#include <nnapi/IExecution.h>
+#include <nnapi/IPreparedModel.h>
+#include <nnapi/Result.h>
+#include <nnapi/SharedMemory.h>
+#include <nnapi/Types.h>
+#include <nnapi/Validation.h>
+#include <nnapi/hal/aidl/Conversions.h>
+#include <nnapi/hal/aidl/Utils.h>
+
+#include <memory>
+#include <utility>
+#include <vector>
+
+namespace aidl::android::hardware::neuralnetworks::adapter {
+namespace {
+
+class FencedExecutionCallback : public BnFencedExecutionCallback {
+  public:
+    FencedExecutionCallback(nn::ExecuteFencedInfoCallback callback)
+        : kCallback(std::move(callback)) {}
+
+    ndk::ScopedAStatus getExecutionInfo(Timing* timingLaunched, Timing* timingFenced,
+                                        ErrorStatus* errorStatus) override {
+        const auto result = kCallback();
+        if (result.ok()) {
+            const auto& [nnTimingLaunched, nnTimingFenced] = result.value();
+            *timingLaunched = utils::convert(nnTimingLaunched).value();
+            *timingFenced = utils::convert(nnTimingFenced).value();
+            *errorStatus = ErrorStatus::NONE;
+        } else {
+            constexpr auto kNoTiming = Timing{.timeOnDeviceNs = -1, .timeInDriverNs = -1};
+            const auto& [message, code] = result.error();
+            LOG(ERROR) << "getExecutionInfo failed with " << code << ": " << message;
+            const auto aidlStatus = utils::convert(code).value_or(ErrorStatus::GENERAL_FAILURE);
+            *timingLaunched = kNoTiming;
+            *timingFenced = kNoTiming;
+            *errorStatus = aidlStatus;
+        }
+        return ndk::ScopedAStatus::ok();
+    }
+
+  private:
+    const nn::ExecuteFencedInfoCallback kCallback;
+};
+
+template <typename Type>
+auto convertInput(const Type& object) -> decltype(nn::convert(std::declval<Type>())) {
+    auto result = nn::convert(object);
+    if (!result.has_value()) {
+        result.error().code = nn::ErrorStatus::INVALID_ARGUMENT;
+    }
+    return result;
+}
+
+nn::GeneralResult<std::vector<nn::SyncFence>> convertSyncFences(
+        const std::vector<ndk::ScopedFileDescriptor>& waitFor) {
+    auto handles = NN_TRY(convertInput(waitFor));
+
+    constexpr auto valid = [](const nn::SharedHandle& handle) {
+        return handle != nullptr && handle->ok();
+    };
+    if (!std::all_of(handles.begin(), handles.end(), valid)) {
+        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Invalid sync fence";
+    }
+
+    std::vector<nn::SyncFence> syncFences;
+    syncFences.reserve(waitFor.size());
+    for (auto& handle : handles) {
+        syncFences.push_back(nn::SyncFence::create(std::move(handle)).value());
+    }
+    return syncFences;
+}
+
+nn::Duration makeDuration(int64_t durationNs) {
+    return nn::Duration(std::chrono::nanoseconds(durationNs));
+}
+
+nn::GeneralResult<nn::OptionalDuration> makeOptionalDuration(int64_t durationNs) {
+    if (durationNs < -1) {
+        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Invalid duration " << durationNs;
+    }
+    return durationNs < 0 ? nn::OptionalDuration{} : makeDuration(durationNs);
+}
+
+nn::GeneralResult<nn::OptionalTimePoint> makeOptionalTimePoint(int64_t durationNs) {
+    if (durationNs < -1) {
+        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Invalid time point " << durationNs;
+    }
+    return durationNs < 0 ? nn::OptionalTimePoint{} : nn::TimePoint(makeDuration(durationNs));
+}
+
+nn::ExecutionResult<ExecutionResult> executeSynchronously(
+        const nn::IPreparedModel& preparedModel, const Request& request, bool measureTiming,
+        int64_t deadlineNs, int64_t loopTimeoutDurationNs, const std::vector<TokenValuePair>& hints,
+        const std::vector<ExtensionNameAndPrefix>& extensionNameToPrefix) {
+    const auto nnRequest = NN_TRY(convertInput(request));
+    const auto nnMeasureTiming = measureTiming ? nn::MeasureTiming::YES : nn::MeasureTiming::NO;
+    const auto nnDeadline = NN_TRY(makeOptionalTimePoint(deadlineNs));
+    const auto nnLoopTimeoutDuration = NN_TRY(makeOptionalDuration(loopTimeoutDurationNs));
+    auto nnHints = NN_TRY(convertInput(hints));
+    auto nnExtensionNameToPrefix = NN_TRY(convertInput(extensionNameToPrefix));
+
+    const auto result =
+            preparedModel.execute(nnRequest, nnMeasureTiming, nnDeadline, nnLoopTimeoutDuration,
+                                  nnHints, nnExtensionNameToPrefix);
+
+    if (!result.ok() && result.error().code == nn::ErrorStatus::OUTPUT_INSUFFICIENT_SIZE) {
+        const auto& [message, code, outputShapes] = result.error();
+        LOG(ERROR) << "executeSynchronously failed with " << code << ": " << message;
+        return ExecutionResult{.outputSufficientSize = false,
+                               .outputShapes = utils::convert(outputShapes).value(),
+                               .timing = {.timeInDriverNs = -1, .timeOnDeviceNs = -1}};
+    }
+
+    const auto& [outputShapes, timing] = NN_TRY(result);
+    return ExecutionResult{.outputSufficientSize = true,
+                           .outputShapes = utils::convert(outputShapes).value(),
+                           .timing = utils::convert(timing).value()};
+}
+
+nn::GeneralResult<FencedExecutionResult> executeFenced(
+        const nn::IPreparedModel& preparedModel, const Request& request,
+        const std::vector<ndk::ScopedFileDescriptor>& waitFor, bool measureTiming,
+        int64_t deadlineNs, int64_t loopTimeoutDurationNs, int64_t durationNs,
+        const std::vector<TokenValuePair>& hints,
+        const std::vector<ExtensionNameAndPrefix>& extensionNameToPrefix) {
+    const auto nnRequest = NN_TRY(convertInput(request));
+    const auto nnWaitFor = NN_TRY(convertSyncFences(waitFor));
+    const auto nnMeasureTiming = measureTiming ? nn::MeasureTiming::YES : nn::MeasureTiming::NO;
+    const auto nnDeadline = NN_TRY(makeOptionalTimePoint(deadlineNs));
+    const auto nnLoopTimeoutDuration = NN_TRY(makeOptionalDuration(loopTimeoutDurationNs));
+    const auto nnDuration = NN_TRY(makeOptionalDuration(durationNs));
+    auto nnHints = NN_TRY(convertInput(hints));
+    auto nnExtensionNameToPrefix = NN_TRY(convertInput(extensionNameToPrefix));
+
+    auto [syncFence, executeFencedInfoCallback] = NN_TRY(preparedModel.executeFenced(
+            nnRequest, nnWaitFor, nnMeasureTiming, nnDeadline, nnLoopTimeoutDuration, nnDuration,
+            nnHints, nnExtensionNameToPrefix));
+
+    ndk::ScopedFileDescriptor fileDescriptor;
+    if (syncFence.hasFd()) {
+        auto uniqueFd = NN_TRY(nn::dupFd(syncFence.getFd()));
+        fileDescriptor = ndk::ScopedFileDescriptor(uniqueFd.release());
+    }
+
+    return FencedExecutionResult{.callback = ndk::SharedRefBase::make<FencedExecutionCallback>(
+                                         std::move(executeFencedInfoCallback)),
+                                 .syncFence = std::move(fileDescriptor)};
+}
+
+nn::GeneralResult<nn::SharedExecution> createReusableExecution(
+        const nn::IPreparedModel& preparedModel, const Request& request, bool measureTiming,
+        int64_t loopTimeoutDurationNs, const std::vector<TokenValuePair>& hints,
+        const std::vector<ExtensionNameAndPrefix>& extensionNameToPrefix) {
+    const auto nnRequest = NN_TRY(convertInput(request));
+    const auto nnMeasureTiming = measureTiming ? nn::MeasureTiming::YES : nn::MeasureTiming::NO;
+    const auto nnLoopTimeoutDuration = NN_TRY(makeOptionalDuration(loopTimeoutDurationNs));
+    auto nnHints = NN_TRY(convertInput(hints));
+    auto nnExtensionNameToPrefix = NN_TRY(convertInput(extensionNameToPrefix));
+
+    return preparedModel.createReusableExecution(nnRequest, nnMeasureTiming, nnLoopTimeoutDuration,
+                                                 nnHints, nnExtensionNameToPrefix);
+}
+
+nn::ExecutionResult<ExecutionResult> executeSynchronously(const nn::IExecution& execution,
+                                                          int64_t deadlineNs) {
+    const auto nnDeadline = NN_TRY(makeOptionalTimePoint(deadlineNs));
+
+    const auto result = execution.compute(nnDeadline);
+
+    if (!result.ok() && result.error().code == nn::ErrorStatus::OUTPUT_INSUFFICIENT_SIZE) {
+        const auto& [message, code, outputShapes] = result.error();
+        LOG(ERROR) << "executeSynchronously failed with " << code << ": " << message;
+        return ExecutionResult{.outputSufficientSize = false,
+                               .outputShapes = utils::convert(outputShapes).value(),
+                               .timing = {.timeInDriverNs = -1, .timeOnDeviceNs = -1}};
+    }
+
+    const auto& [outputShapes, timing] = NN_TRY(result);
+    return ExecutionResult{.outputSufficientSize = true,
+                           .outputShapes = utils::convert(outputShapes).value(),
+                           .timing = utils::convert(timing).value()};
+}
+
+nn::GeneralResult<FencedExecutionResult> executeFenced(
+        const nn::IExecution& execution, const std::vector<ndk::ScopedFileDescriptor>& waitFor,
+        int64_t deadlineNs, int64_t durationNs) {
+    const auto nnWaitFor = NN_TRY(convertSyncFences(waitFor));
+    const auto nnDeadline = NN_TRY(makeOptionalTimePoint(deadlineNs));
+    const auto nnDuration = NN_TRY(makeOptionalDuration(durationNs));
+
+    auto [syncFence, executeFencedInfoCallback] =
+            NN_TRY(execution.computeFenced(nnWaitFor, nnDeadline, nnDuration));
+
+    ndk::ScopedFileDescriptor fileDescriptor;
+    if (syncFence.hasFd()) {
+        auto uniqueFd = NN_TRY(nn::dupFd(syncFence.getFd()));
+        fileDescriptor = ndk::ScopedFileDescriptor(uniqueFd.release());
+    }
+
+    return FencedExecutionResult{.callback = ndk::SharedRefBase::make<FencedExecutionCallback>(
+                                         std::move(executeFencedInfoCallback)),
+                                 .syncFence = std::move(fileDescriptor)};
+}
+
+}  // namespace
+
+PreparedModel::PreparedModel(nn::SharedPreparedModel preparedModel)
+    : kPreparedModel(std::move(preparedModel)) {
+    CHECK(kPreparedModel != nullptr);
+}
+
+ndk::ScopedAStatus PreparedModel::executeSynchronously(const Request& request, bool measureTiming,
+                                                       int64_t deadlineNs,
+                                                       int64_t loopTimeoutDurationNs,
+                                                       ExecutionResult* executionResult) {
+    auto result = adapter::executeSynchronously(*kPreparedModel, request, measureTiming, deadlineNs,
+                                                loopTimeoutDurationNs, {}, {});
+    if (!result.has_value()) {
+        const auto& [message, code, _] = result.error();
+        const auto aidlCode = utils::convert(code).value_or(ErrorStatus::GENERAL_FAILURE);
+        return ndk::ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                static_cast<int32_t>(aidlCode), message.c_str());
+    }
+    *executionResult = std::move(result).value();
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus PreparedModel::executeFenced(
+        const Request& request, const std::vector<ndk::ScopedFileDescriptor>& waitFor,
+        bool measureTiming, int64_t deadlineNs, int64_t loopTimeoutDurationNs, int64_t durationNs,
+        FencedExecutionResult* executionResult) {
+    auto result = adapter::executeFenced(*kPreparedModel, request, waitFor, measureTiming,
+                                         deadlineNs, loopTimeoutDurationNs, durationNs, {}, {});
+    if (!result.has_value()) {
+        const auto& [message, code] = result.error();
+        const auto aidlCode = utils::convert(code).value_or(ErrorStatus::GENERAL_FAILURE);
+        return ndk::ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                static_cast<int32_t>(aidlCode), message.c_str());
+    }
+    *executionResult = std::move(result).value();
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus PreparedModel::executeSynchronouslyWithConfig(const Request& request,
+                                                                 const ExecutionConfig& config,
+                                                                 int64_t deadlineNs,
+                                                                 ExecutionResult* executionResult) {
+    auto result = adapter::executeSynchronously(
+            *kPreparedModel, request, config.measureTiming, deadlineNs,
+            config.loopTimeoutDurationNs, config.executionHints, config.extensionNameToPrefix);
+    if (!result.has_value()) {
+        const auto& [message, code, _] = result.error();
+        const auto aidlCode = utils::convert(code).value_or(ErrorStatus::GENERAL_FAILURE);
+        return ndk::ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                static_cast<int32_t>(aidlCode), message.c_str());
+    }
+    *executionResult = std::move(result).value();
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus PreparedModel::executeFencedWithConfig(
+        const Request& request, const std::vector<ndk::ScopedFileDescriptor>& waitFor,
+        const ExecutionConfig& config, int64_t deadlineNs, int64_t durationNs,
+        FencedExecutionResult* executionResult) {
+    auto result = adapter::executeFenced(*kPreparedModel, request, waitFor, config.measureTiming,
+                                         deadlineNs, config.loopTimeoutDurationNs, durationNs,
+                                         config.executionHints, config.extensionNameToPrefix);
+    if (!result.has_value()) {
+        const auto& [message, code] = result.error();
+        const auto aidlCode = utils::convert(code).value_or(ErrorStatus::GENERAL_FAILURE);
+        return ndk::ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                static_cast<int32_t>(aidlCode), message.c_str());
+    }
+    *executionResult = std::move(result).value();
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus PreparedModel::configureExecutionBurst(std::shared_ptr<IBurst>* burst) {
+    auto result = kPreparedModel->configureExecutionBurst();
+    if (!result.has_value()) {
+        const auto& [message, code] = result.error();
+        const auto aidlCode = utils::convert(code).value_or(ErrorStatus::GENERAL_FAILURE);
+        return ndk::ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                static_cast<int32_t>(aidlCode), message.c_str());
+    }
+    *burst = ndk::SharedRefBase::make<Burst>(std::move(result).value());
+    return ndk::ScopedAStatus::ok();
+}
+
+nn::SharedPreparedModel PreparedModel::getUnderlyingPreparedModel() const {
+    return kPreparedModel;
+}
+
+ndk::ScopedAStatus PreparedModel::createReusableExecution(const Request& request,
+                                                          const ExecutionConfig& config,
+                                                          std::shared_ptr<IExecution>* execution) {
+    auto result = adapter::createReusableExecution(
+            *kPreparedModel, request, config.measureTiming, config.loopTimeoutDurationNs,
+            config.executionHints, config.extensionNameToPrefix);
+    if (!result.has_value()) {
+        const auto& [message, code] = result.error();
+        const auto aidlCode = utils::convert(code).value_or(ErrorStatus::GENERAL_FAILURE);
+        return ndk::ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                static_cast<int32_t>(aidlCode), message.c_str());
+    }
+    *execution = ndk::SharedRefBase::make<Execution>(std::move(result).value());
+    return ndk::ScopedAStatus::ok();
+}
+
+Execution::Execution(nn::SharedExecution execution) : kExecution(std::move(execution)) {
+    CHECK(kExecution != nullptr);
+}
+
+ndk::ScopedAStatus Execution::executeSynchronously(int64_t deadlineNs,
+                                                   ExecutionResult* executionResult) {
+    auto result = adapter::executeSynchronously(*kExecution, deadlineNs);
+    if (!result.has_value()) {
+        const auto& [message, code, _] = result.error();
+        const auto aidlCode = utils::convert(code).value_or(ErrorStatus::GENERAL_FAILURE);
+        return ndk::ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                static_cast<int32_t>(aidlCode), message.c_str());
+    }
+    *executionResult = std::move(result).value();
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus Execution::executeFenced(const std::vector<ndk::ScopedFileDescriptor>& waitFor,
+                                            int64_t deadlineNs, int64_t durationNs,
+                                            FencedExecutionResult* executionResult) {
+    auto result = adapter::executeFenced(*kExecution, waitFor, deadlineNs, durationNs);
+    if (!result.has_value()) {
+        const auto& [message, code] = result.error();
+        const auto aidlCode = utils::convert(code).value_or(ErrorStatus::GENERAL_FAILURE);
+        return ndk::ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                static_cast<int32_t>(aidlCode), message.c_str());
+    }
+    *executionResult = std::move(result).value();
+    return ndk::ScopedAStatus::ok();
+}
+
+}  // namespace aidl::android::hardware::neuralnetworks::adapter
diff --git a/neuralnetworks/utils/adapter/Android.bp b/neuralnetworks/utils/adapter/hidl/Android.bp
similarity index 100%
rename from neuralnetworks/utils/adapter/Android.bp
rename to neuralnetworks/utils/adapter/hidl/Android.bp
diff --git a/neuralnetworks/utils/adapter/hidl/include/nnapi/hal/Adapter.h b/neuralnetworks/utils/adapter/hidl/include/nnapi/hal/Adapter.h
new file mode 100644
index 0000000..6fba4ab
--- /dev/null
+++ b/neuralnetworks/utils/adapter/hidl/include/nnapi/hal/Adapter.h
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_ADAPTER_ADAPTER_H
+#define ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_ADAPTER_ADAPTER_H
+
+#include <android/hardware/neuralnetworks/1.3/IDevice.h>
+#include <nnapi/IDevice.h>
+#include <nnapi/Types.h>
+#include <functional>
+#include <memory>
+
+// See hardware/interfaces/neuralnetworks/utils/README.md for more information on HIDL interface
+// lifetimes across processes and for protecting asynchronous calls across HIDL.
+
+namespace android::hardware::neuralnetworks::adapter {
+
+/**
+ * A self-contained unit of work to be executed.
+ */
+using Task = std::function<void()>;
+
+/**
+ * A type-erased executor which executes a task asynchronously.
+ *
+ * This executor is also provided an optional deadline for when the caller expects is the upper
+ * bound for the amount of time to complete the task. If needed, the Executor can retrieve the
+ * Application ID (Android User ID) by calling IPCThreadState::self()->getCallingUid() in
+ * hwbinder/IPCThreadState.h.
+ */
+using Executor = std::function<void(Task, nn::OptionalTimePoint)>;
+
+/**
+ * Adapt an NNAPI canonical interface object to a HIDL NN HAL interface object.
+ *
+ * The IPreparedModel object created from IDevice::prepareModel or IDevice::preparedModelFromCache
+ * must return "const nn::Model*" from IPreparedModel::getUnderlyingResource().
+ *
+ * @param device NNAPI canonical IDevice interface object to be adapted.
+ * @param executor Type-erased executor to handle executing tasks asynchronously.
+ * @return HIDL NN HAL IDevice interface object.
+ */
+sp<V1_3::IDevice> adapt(nn::SharedDevice device, Executor executor);
+
+/**
+ * Adapt an NNAPI canonical interface object to a HIDL NN HAL interface object.
+ *
+ * The IPreparedModel object created from IDevice::prepareModel or IDevice::preparedModelFromCache
+ * must return "const nn::Model*" from IPreparedModel::getUnderlyingResource().
+ *
+ * This function uses a default executor, which will execute tasks from a detached thread.
+ *
+ * @param device NNAPI canonical IDevice interface object to be adapted.
+ * @return HIDL NN HAL IDevice interface object.
+ */
+sp<V1_3::IDevice> adapt(nn::SharedDevice device);
+
+}  // namespace android::hardware::neuralnetworks::adapter
+
+#endif  // ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_ADAPTER_ADAPTER_H
diff --git a/neuralnetworks/utils/adapter/include/nnapi/hal/Buffer.h b/neuralnetworks/utils/adapter/hidl/include/nnapi/hal/Buffer.h
similarity index 100%
rename from neuralnetworks/utils/adapter/include/nnapi/hal/Buffer.h
rename to neuralnetworks/utils/adapter/hidl/include/nnapi/hal/Buffer.h
diff --git a/neuralnetworks/utils/adapter/include/nnapi/hal/Burst.h b/neuralnetworks/utils/adapter/hidl/include/nnapi/hal/Burst.h
similarity index 100%
rename from neuralnetworks/utils/adapter/include/nnapi/hal/Burst.h
rename to neuralnetworks/utils/adapter/hidl/include/nnapi/hal/Burst.h
diff --git a/neuralnetworks/utils/adapter/include/nnapi/hal/Device.h b/neuralnetworks/utils/adapter/hidl/include/nnapi/hal/Device.h
similarity index 100%
rename from neuralnetworks/utils/adapter/include/nnapi/hal/Device.h
rename to neuralnetworks/utils/adapter/hidl/include/nnapi/hal/Device.h
diff --git a/neuralnetworks/utils/adapter/hidl/include/nnapi/hal/PreparedModel.h b/neuralnetworks/utils/adapter/hidl/include/nnapi/hal/PreparedModel.h
new file mode 100644
index 0000000..9482b0d
--- /dev/null
+++ b/neuralnetworks/utils/adapter/hidl/include/nnapi/hal/PreparedModel.h
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_ADAPTER_PREPARED_MODEL_H
+#define ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_ADAPTER_PREPARED_MODEL_H
+
+#include "nnapi/hal/Adapter.h"
+
+#include <android/hardware/neuralnetworks/1.0/IExecutionCallback.h>
+#include <android/hardware/neuralnetworks/1.0/types.h>
+#include <android/hardware/neuralnetworks/1.2/IBurstCallback.h>
+#include <android/hardware/neuralnetworks/1.2/IExecutionCallback.h>
+#include <android/hardware/neuralnetworks/1.2/types.h>
+#include <android/hardware/neuralnetworks/1.3/IExecutionCallback.h>
+#include <android/hardware/neuralnetworks/1.3/IPreparedModel.h>
+#include <android/hardware/neuralnetworks/1.3/types.h>
+#include <nnapi/IPreparedModel.h>
+#include <nnapi/Types.h>
+#include <memory>
+
+// See hardware/interfaces/neuralnetworks/utils/README.md for more information on HIDL interface
+// lifetimes across processes and for protecting asynchronous calls across HIDL.
+
+namespace android::hardware::neuralnetworks::adapter {
+
+// Class that adapts nn::IPreparedModel to V1_3::IPreparedModel.
+class PreparedModel final : public V1_3::IPreparedModel {
+  public:
+    PreparedModel(nn::SharedPreparedModel preparedModel, Executor executor);
+
+    Return<V1_0::ErrorStatus> execute(const V1_0::Request& request,
+                                      const sp<V1_0::IExecutionCallback>& callback) override;
+    Return<V1_0::ErrorStatus> execute_1_2(const V1_0::Request& request, V1_2::MeasureTiming measure,
+                                          const sp<V1_2::IExecutionCallback>& callback) override;
+    Return<V1_3::ErrorStatus> execute_1_3(const V1_3::Request& request, V1_2::MeasureTiming measure,
+                                          const V1_3::OptionalTimePoint& deadline,
+                                          const V1_3::OptionalTimeoutDuration& loopTimeoutDuration,
+                                          const sp<V1_3::IExecutionCallback>& callback) override;
+    Return<void> executeSynchronously(const V1_0::Request& request, V1_2::MeasureTiming measure,
+                                      executeSynchronously_cb cb) override;
+    Return<void> executeSynchronously_1_3(const V1_3::Request& request, V1_2::MeasureTiming measure,
+                                          const V1_3::OptionalTimePoint& deadline,
+                                          const V1_3::OptionalTimeoutDuration& loopTimeoutDuration,
+                                          executeSynchronously_1_3_cb cb) override;
+    Return<void> configureExecutionBurst(
+            const sp<V1_2::IBurstCallback>& callback,
+            const MQDescriptorSync<V1_2::FmqRequestDatum>& requestChannel,
+            const MQDescriptorSync<V1_2::FmqResultDatum>& resultChannel,
+            configureExecutionBurst_cb cb) override;
+    Return<void> executeFenced(const V1_3::Request& request, const hidl_vec<hidl_handle>& waitFor,
+                               V1_2::MeasureTiming measure, const V1_3::OptionalTimePoint& deadline,
+                               const V1_3::OptionalTimeoutDuration& loopTimeoutDuration,
+                               const V1_3::OptionalTimeoutDuration& duration,
+                               executeFenced_cb callback) override;
+
+    nn::SharedPreparedModel getUnderlyingPreparedModel() const;
+
+  private:
+    const nn::SharedPreparedModel kPreparedModel;
+    const Executor kExecutor;
+};
+
+}  // namespace android::hardware::neuralnetworks::adapter
+
+#endif  // ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_ADAPTER_PREPARED_MODEL_H
diff --git a/neuralnetworks/utils/adapter/hidl/src/Adapter.cpp b/neuralnetworks/utils/adapter/hidl/src/Adapter.cpp
new file mode 100644
index 0000000..782e815
--- /dev/null
+++ b/neuralnetworks/utils/adapter/hidl/src/Adapter.cpp
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Adapter.h"
+
+#include "Device.h"
+
+#include <android/hardware/neuralnetworks/1.3/IDevice.h>
+#include <nnapi/IDevice.h>
+#include <nnapi/Types.h>
+
+#include <functional>
+#include <memory>
+#include <thread>
+
+// See hardware/interfaces/neuralnetworks/utils/README.md for more information on HIDL interface
+// lifetimes across processes and for protecting asynchronous calls across HIDL.
+
+namespace android::hardware::neuralnetworks::adapter {
+
+sp<V1_3::IDevice> adapt(nn::SharedDevice device, Executor executor) {
+    return sp<Device>::make(std::move(device), std::move(executor));
+}
+
+sp<V1_3::IDevice> adapt(nn::SharedDevice device) {
+    Executor defaultExecutor = [](Task task, nn::OptionalTimePoint /*deadline*/) {
+        std::thread(std::move(task)).detach();
+    };
+    return adapt(std::move(device), std::move(defaultExecutor));
+}
+
+}  // namespace android::hardware::neuralnetworks::adapter
diff --git a/neuralnetworks/utils/adapter/src/Buffer.cpp b/neuralnetworks/utils/adapter/hidl/src/Buffer.cpp
similarity index 100%
rename from neuralnetworks/utils/adapter/src/Buffer.cpp
rename to neuralnetworks/utils/adapter/hidl/src/Buffer.cpp
diff --git a/neuralnetworks/utils/adapter/hidl/src/Burst.cpp b/neuralnetworks/utils/adapter/hidl/src/Burst.cpp
new file mode 100644
index 0000000..e3b165b
--- /dev/null
+++ b/neuralnetworks/utils/adapter/hidl/src/Burst.cpp
@@ -0,0 +1,259 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Burst.h"
+
+#include <android-base/logging.h>
+#include <nnapi/IBurst.h>
+#include <nnapi/Result.h>
+#include <nnapi/TypeUtils.h>
+#include <nnapi/Types.h>
+#include <nnapi/Validation.h>
+#include <nnapi/hal/1.0/Conversions.h>
+#include <nnapi/hal/1.0/HandleError.h>
+#include <nnapi/hal/1.0/ProtectCallback.h>
+#include <nnapi/hal/1.2/BurstUtils.h>
+#include <nnapi/hal/1.2/Conversions.h>
+#include <nnapi/hal/TransferValue.h>
+
+#include <algorithm>
+#include <cstring>
+#include <limits>
+#include <map>
+#include <memory>
+#include <tuple>
+#include <utility>
+#include <vector>
+
+#include "Tracing.h"
+
+namespace android::hardware::neuralnetworks::adapter {
+namespace {
+
+constexpr V1_2::Timing kTiming = {std::numeric_limits<uint64_t>::max(),
+                                  std::numeric_limits<uint64_t>::max()};
+
+nn::GeneralResult<std::vector<nn::SharedMemory>> getMemoriesCallback(
+        V1_0::ErrorStatus status, const hidl_vec<hidl_memory>& memories) {
+    HANDLE_STATUS_HIDL(status) << "getting burst memories failed with " << toString(status);
+    std::vector<nn::SharedMemory> canonicalMemories;
+    canonicalMemories.reserve(memories.size());
+    for (const auto& memory : memories) {
+        canonicalMemories.push_back(NN_TRY(nn::convert(memory)));
+    }
+    return canonicalMemories;
+}
+
+}  // anonymous namespace
+
+Burst::MemoryCache::MemoryCache(nn::SharedBurst burstExecutor,
+                                sp<V1_2::IBurstCallback> burstCallback)
+    : kBurstExecutor(std::move(burstExecutor)), kBurstCallback(std::move(burstCallback)) {
+    CHECK(kBurstExecutor != nullptr);
+    CHECK(kBurstCallback != nullptr);
+}
+
+nn::GeneralResult<std::vector<std::pair<nn::SharedMemory, nn::IBurst::OptionalCacheHold>>>
+Burst::MemoryCache::getCacheEntries(const std::vector<int32_t>& slots) {
+    std::lock_guard guard(mMutex);
+    NN_TRY(ensureCacheEntriesArePresentLocked(slots));
+
+    std::vector<std::pair<nn::SharedMemory, nn::IBurst::OptionalCacheHold>> results;
+    results.reserve(slots.size());
+    for (int32_t slot : slots) {
+        results.push_back(NN_TRY(getCacheEntryLocked(slot)));
+    }
+
+    return results;
+}
+
+nn::GeneralResult<void> Burst::MemoryCache::ensureCacheEntriesArePresentLocked(
+        const std::vector<int32_t>& slots) {
+    const auto slotIsKnown = [this](int32_t slot)
+                                     REQUIRES(mMutex) { return mCache.count(slot) > 0; };
+
+    // find unique unknown slots
+    std::vector<int32_t> unknownSlots = slots;
+    std::sort(unknownSlots.begin(), unknownSlots.end());
+    auto unknownSlotsEnd = std::unique(unknownSlots.begin(), unknownSlots.end());
+    unknownSlotsEnd = std::remove_if(unknownSlots.begin(), unknownSlotsEnd, slotIsKnown);
+    unknownSlots.erase(unknownSlotsEnd, unknownSlots.end());
+
+    // quick-exit if all slots are known
+    if (unknownSlots.empty()) {
+        return {};
+    }
+
+    auto cb = neuralnetworks::utils::CallbackValue(getMemoriesCallback);
+
+    const auto ret = kBurstCallback->getMemories(unknownSlots, cb);
+    HANDLE_TRANSPORT_FAILURE(ret);
+
+    auto returnedMemories = NN_TRY(cb.take());
+
+    if (returnedMemories.size() != unknownSlots.size()) {
+        return NN_ERROR() << "Burst::MemoryCache::ensureCacheEntriesArePresentLocked: Error "
+                             "retrieving memories -- count mismatch between requested memories ("
+                          << unknownSlots.size() << ") and returned memories ("
+                          << returnedMemories.size() << ")";
+    }
+
+    // add memories to unknown slots
+    for (size_t i = 0; i < unknownSlots.size(); ++i) {
+        addCacheEntryLocked(unknownSlots[i], std::move(returnedMemories[i]));
+    }
+
+    return {};
+}
+
+nn::GeneralResult<std::pair<nn::SharedMemory, nn::IBurst::OptionalCacheHold>>
+Burst::MemoryCache::getCacheEntryLocked(int32_t slot) {
+    if (const auto iter = mCache.find(slot); iter != mCache.end()) {
+        return iter->second;
+    }
+    return NN_ERROR() << "Burst::MemoryCache::getCacheEntryLocked failed because slot " << slot
+                      << " is not present in the cache";
+}
+
+void Burst::MemoryCache::addCacheEntryLocked(int32_t slot, nn::SharedMemory memory) {
+    auto hold = kBurstExecutor->cacheMemory(memory);
+    mCache.emplace(slot, std::make_pair(std::move(memory), std::move(hold)));
+}
+
+void Burst::MemoryCache::removeCacheEntry(int32_t slot) {
+    std::lock_guard guard(mMutex);
+    mCache.erase(slot);
+}
+
+// Burst methods
+
+nn::GeneralResult<sp<Burst>> Burst::create(
+        const sp<V1_2::IBurstCallback>& callback,
+        const MQDescriptorSync<V1_2::FmqRequestDatum>& requestChannel,
+        const MQDescriptorSync<V1_2::FmqResultDatum>& resultChannel, nn::SharedBurst burstExecutor,
+        std::chrono::microseconds pollingTimeWindow) {
+    // check inputs
+    if (callback == nullptr || burstExecutor == nullptr) {
+        return NN_ERROR() << "Burst::create passed a nullptr";
+    }
+
+    // create FMQ objects
+    auto requestChannelReceiver =
+            NN_TRY(V1_2::utils::RequestChannelReceiver::create(requestChannel, pollingTimeWindow));
+    auto resultChannelSender = NN_TRY(V1_2::utils::ResultChannelSender::create(resultChannel));
+
+    // check FMQ objects
+    CHECK(requestChannelReceiver != nullptr);
+    CHECK(resultChannelSender != nullptr);
+
+    // make and return context
+    return sp<Burst>::make(PrivateConstructorTag{}, callback, std::move(requestChannelReceiver),
+                           std::move(resultChannelSender), std::move(burstExecutor));
+}
+
+Burst::Burst(PrivateConstructorTag /*tag*/, const sp<V1_2::IBurstCallback>& callback,
+             std::unique_ptr<V1_2::utils::RequestChannelReceiver> requestChannel,
+             std::unique_ptr<V1_2::utils::ResultChannelSender> resultChannel,
+             nn::SharedBurst burstExecutor)
+    : mCallback(callback),
+      mRequestChannelReceiver(std::move(requestChannel)),
+      mResultChannelSender(std::move(resultChannel)),
+      mBurstExecutor(std::move(burstExecutor)),
+      mMemoryCache(mBurstExecutor, mCallback) {
+    // TODO: highly document the threading behavior of this class
+    mWorker = std::thread([this] { task(); });
+}
+
+Burst::~Burst() {
+    // set teardown flag
+    mTeardown = true;
+    mRequestChannelReceiver->invalidate();
+
+    // wait for task thread to end
+    mWorker.join();
+}
+
+Return<void> Burst::freeMemory(int32_t slot) {
+    mMemoryCache.removeCacheEntry(slot);
+    return Void();
+}
+
+void Burst::task() {
+    // loop until the burst object is being destroyed
+    while (!mTeardown) {
+        // receive request
+        auto arguments = mRequestChannelReceiver->getBlocking();
+
+        // if the request packet was not properly received, return a generic error and skip the
+        // execution
+        //
+        // if the burst is being torn down, skip the execution so the "task" function can end
+        if (!arguments.has_value()) {
+            if (!mTeardown) {
+                mResultChannelSender->send(V1_0::ErrorStatus::GENERAL_FAILURE, {}, kTiming);
+            }
+            continue;
+        }
+
+        // unpack the arguments; types are Request, std::vector<int32_t>, and V1_2::MeasureTiming,
+        // respectively
+        const auto [requestWithoutPools, slotsOfPools, measure] = std::move(arguments).value();
+
+        auto result = execute(requestWithoutPools, slotsOfPools, measure);
+
+        // return result
+        if (result.has_value()) {
+            const auto& [outputShapes, timing] = result.value();
+            mResultChannelSender->send(V1_0::ErrorStatus::NONE, outputShapes, timing);
+        } else {
+            const auto& [message, code, outputShapes] = result.error();
+            LOG(ERROR) << "IBurst::execute failed with " << code << ": " << message;
+            mResultChannelSender->send(V1_2::utils::convert(code).value(),
+                                       V1_2::utils::convert(outputShapes).value(), kTiming);
+        }
+    }
+}
+
+nn::ExecutionResult<std::pair<hidl_vec<V1_2::OutputShape>, V1_2::Timing>> Burst::execute(
+        const V1_0::Request& requestWithoutPools, const std::vector<int32_t>& slotsOfPools,
+        V1_2::MeasureTiming measure) {
+    NNTRACE_FULL(NNTRACE_LAYER_IPC, NNTRACE_PHASE_EXECUTION,
+                 "Burst getting memory, executing, and returning results");
+
+    // ensure executor with cache has required memory
+    const auto cacheEntries = NN_TRY(mMemoryCache.getCacheEntries(slotsOfPools));
+
+    // convert request, populating its pools
+    // This code performs an unvalidated convert because the request object without its pools is
+    // invalid because it is incomplete. Instead, the validation is performed after the memory pools
+    // have been added to the request.
+    auto canonicalRequest = NN_TRY(nn::unvalidatedConvert(requestWithoutPools));
+    CHECK(canonicalRequest.pools.empty());
+    std::transform(cacheEntries.begin(), cacheEntries.end(),
+                   std::back_inserter(canonicalRequest.pools),
+                   [](const auto& cacheEntry) { return cacheEntry.first; });
+    NN_TRY(validate(canonicalRequest));
+
+    nn::MeasureTiming canonicalMeasure = NN_TRY(nn::convert(measure));
+
+    const auto [outputShapes, timing] =
+            NN_TRY(mBurstExecutor->execute(canonicalRequest, canonicalMeasure, {}, {}, {}, {}));
+
+    return std::make_pair(NN_TRY(V1_2::utils::convert(outputShapes)),
+                          NN_TRY(V1_2::utils::convert(timing)));
+}
+
+}  // namespace android::hardware::neuralnetworks::adapter
diff --git a/neuralnetworks/utils/adapter/hidl/src/Device.cpp b/neuralnetworks/utils/adapter/hidl/src/Device.cpp
new file mode 100644
index 0000000..0f44638
--- /dev/null
+++ b/neuralnetworks/utils/adapter/hidl/src/Device.cpp
@@ -0,0 +1,546 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Device.h"
+
+#include "Buffer.h"
+#include "PreparedModel.h"
+
+#include <android-base/logging.h>
+#include <android/hardware/neuralnetworks/1.0/IPreparedModelCallback.h>
+#include <android/hardware/neuralnetworks/1.0/types.h>
+#include <android/hardware/neuralnetworks/1.1/types.h>
+#include <android/hardware/neuralnetworks/1.2/IPreparedModelCallback.h>
+#include <android/hardware/neuralnetworks/1.2/types.h>
+#include <android/hardware/neuralnetworks/1.3/IDevice.h>
+#include <android/hardware/neuralnetworks/1.3/IPreparedModelCallback.h>
+#include <android/hardware/neuralnetworks/1.3/types.h>
+#include <nnapi/IBuffer.h>
+#include <nnapi/IDevice.h>
+#include <nnapi/IPreparedModel.h>
+#include <nnapi/Result.h>
+#include <nnapi/TypeUtils.h>
+#include <nnapi/Types.h>
+#include <nnapi/hal/1.0/Conversions.h>
+#include <nnapi/hal/1.0/Utils.h>
+#include <nnapi/hal/1.1/Conversions.h>
+#include <nnapi/hal/1.1/Utils.h>
+#include <nnapi/hal/1.2/Conversions.h>
+#include <nnapi/hal/1.2/Utils.h>
+#include <nnapi/hal/1.3/Conversions.h>
+#include <nnapi/hal/1.3/Utils.h>
+
+#include <memory>
+
+// See hardware/interfaces/neuralnetworks/utils/README.md for more information on HIDL interface
+// lifetimes across processes and for protecting asynchronous calls across HIDL.
+
+namespace android::hardware::neuralnetworks::adapter {
+namespace {
+
+template <typename Type>
+auto convertInput(const Type& object) -> decltype(nn::convert(std::declval<Type>())) {
+    auto result = nn::convert(object);
+    if (!result.has_value()) {
+        result.error().code = nn::ErrorStatus::INVALID_ARGUMENT;
+    }
+    return result;
+}
+
+using PrepareModelResult = nn::GeneralResult<nn::SharedPreparedModel>;
+
+sp<PreparedModel> adaptPreparedModel(nn::SharedPreparedModel preparedModel, Executor executor) {
+    if (preparedModel == nullptr) {
+        return nullptr;
+    }
+    return sp<PreparedModel>::make(std::move(preparedModel), std::move(executor));
+}
+
+void notify(V1_0::IPreparedModelCallback* callback, nn::ErrorStatus status,
+            const sp<PreparedModel>& hidlPreparedModel) {
+    if (callback != nullptr) {
+        const auto hidlStatus = V1_0::utils::convert(status).value();
+        const auto ret = callback->notify(hidlStatus, hidlPreparedModel);
+        if (!ret.isOk()) {
+            LOG(ERROR) << "V1_0::IPreparedModelCallback::notify failed with " << ret.description();
+        }
+    }
+}
+
+void notify(V1_2::IPreparedModelCallback* callback, nn::ErrorStatus status,
+            const sp<PreparedModel>& hidlPreparedModel) {
+    if (callback != nullptr) {
+        const auto hidlStatus = V1_2::utils::convert(status).value();
+        const auto ret = callback->notify_1_2(hidlStatus, hidlPreparedModel);
+        if (!ret.isOk()) {
+            LOG(ERROR) << "V1_2::IPreparedModelCallback::notify_1_2 failed with "
+                       << ret.description();
+        }
+    }
+}
+
+void notify(V1_3::IPreparedModelCallback* callback, nn::ErrorStatus status,
+            const sp<PreparedModel>& hidlPreparedModel) {
+    if (callback != nullptr) {
+        const auto hidlStatus = V1_3::utils::convert(status).value();
+        const auto ret = callback->notify_1_3(hidlStatus, hidlPreparedModel);
+        if (!ret.isOk()) {
+            LOG(ERROR) << "V1_3::IPreparedModelCallback::notify_1_3 failed with "
+                       << ret.description();
+        }
+    }
+}
+
+template <typename CallbackType>
+void notify(CallbackType* callback, PrepareModelResult result, Executor executor) {
+    if (!result.has_value()) {
+        const auto [message, status] = std::move(result).error();
+        LOG(ERROR) << message;
+        notify(callback, status, nullptr);
+    } else {
+        auto preparedModel = std::move(result).value();
+        auto hidlPreparedModel = adaptPreparedModel(std::move(preparedModel), std::move(executor));
+        notify(callback, nn::ErrorStatus::NONE, std::move(hidlPreparedModel));
+    }
+}
+
+template <typename ModelType>
+nn::GeneralResult<hidl_vec<bool>> getSupportedOperations(const nn::SharedDevice& device,
+                                                         const ModelType& model) {
+    const auto nnModel = NN_TRY(convertInput(model));
+    return NN_TRY(device->getSupportedOperations(nnModel));
+}
+
+nn::GeneralResult<void> prepareModel(const nn::SharedDevice& device, const Executor& executor,
+                                     const V1_0::Model& model,
+                                     const sp<V1_0::IPreparedModelCallback>& callback) {
+    if (callback.get() == nullptr) {
+        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Invalid callback";
+    }
+
+    auto nnModel = NN_TRY(convertInput(model));
+
+    Task task = [device, nnModel = std::move(nnModel), executor, callback] {
+        auto result = device->prepareModel(nnModel, nn::ExecutionPreference::DEFAULT,
+                                           nn::Priority::DEFAULT, {}, {}, {}, {}, {}, {});
+        notify(callback.get(), std::move(result), executor);
+    };
+    executor(std::move(task), {});
+
+    return {};
+}
+
+nn::GeneralResult<void> prepareModel_1_1(const nn::SharedDevice& device, const Executor& executor,
+                                         const V1_1::Model& model,
+                                         V1_1::ExecutionPreference preference,
+                                         const sp<V1_0::IPreparedModelCallback>& callback) {
+    if (callback.get() == nullptr) {
+        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Invalid callback";
+    }
+
+    auto nnModel = NN_TRY(convertInput(model));
+    const auto nnPreference = NN_TRY(convertInput(preference));
+
+    Task task = [device, nnModel = std::move(nnModel), nnPreference, executor, callback] {
+        auto result = device->prepareModel(nnModel, nnPreference, nn::Priority::DEFAULT, {}, {}, {},
+                                           {}, {}, {});
+        notify(callback.get(), std::move(result), executor);
+    };
+    executor(std::move(task), {});
+
+    return {};
+}
+
+nn::GeneralResult<void> prepareModel_1_2(const nn::SharedDevice& device, const Executor& executor,
+                                         const V1_2::Model& model,
+                                         V1_1::ExecutionPreference preference,
+                                         const hidl_vec<hidl_handle>& modelCache,
+                                         const hidl_vec<hidl_handle>& dataCache,
+                                         const CacheToken& token,
+                                         const sp<V1_2::IPreparedModelCallback>& callback) {
+    if (callback.get() == nullptr) {
+        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Invalid callback";
+    }
+
+    auto nnModel = NN_TRY(convertInput(model));
+    const auto nnPreference = NN_TRY(convertInput(preference));
+    auto nnModelCache = NN_TRY(convertInput(modelCache));
+    auto nnDataCache = NN_TRY(convertInput(dataCache));
+    const auto nnToken = nn::CacheToken(token);
+
+    Task task = [device, nnModel = std::move(nnModel), nnPreference,
+                 nnModelCache = std::move(nnModelCache), nnDataCache = std::move(nnDataCache),
+                 nnToken, executor, callback] {
+        auto result = device->prepareModel(nnModel, nnPreference, nn::Priority::DEFAULT, {},
+                                           nnModelCache, nnDataCache, nnToken, {}, {});
+        notify(callback.get(), std::move(result), executor);
+    };
+    executor(std::move(task), {});
+
+    return {};
+}
+
+nn::GeneralResult<void> prepareModel_1_3(
+        const nn::SharedDevice& device, const Executor& executor, const V1_3::Model& model,
+        V1_1::ExecutionPreference preference, V1_3::Priority priority,
+        const V1_3::OptionalTimePoint& deadline, const hidl_vec<hidl_handle>& modelCache,
+        const hidl_vec<hidl_handle>& dataCache, const CacheToken& token,
+        const sp<V1_3::IPreparedModelCallback>& callback) {
+    if (callback.get() == nullptr) {
+        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Invalid callback";
+    }
+
+    auto nnModel = NN_TRY(convertInput(model));
+    const auto nnPreference = NN_TRY(convertInput(preference));
+    const auto nnPriority = NN_TRY(convertInput(priority));
+    const auto nnDeadline = NN_TRY(convertInput(deadline));
+    auto nnModelCache = NN_TRY(convertInput(modelCache));
+    auto nnDataCache = NN_TRY(convertInput(dataCache));
+    const auto nnToken = nn::CacheToken(token);
+
+    Task task = [device, nnModel = std::move(nnModel), nnPreference, nnPriority, nnDeadline,
+                 nnModelCache = std::move(nnModelCache), nnDataCache = std::move(nnDataCache),
+                 nnToken, executor, callback] {
+        auto result = device->prepareModel(nnModel, nnPreference, nnPriority, nnDeadline,
+                                           nnModelCache, nnDataCache, nnToken, {}, {});
+        notify(callback.get(), std::move(result), executor);
+    };
+    executor(std::move(task), nnDeadline);
+
+    return {};
+}
+
+nn::GeneralResult<void> prepareModelFromCache(const nn::SharedDevice& device,
+                                              const Executor& executor,
+                                              const hidl_vec<hidl_handle>& modelCache,
+                                              const hidl_vec<hidl_handle>& dataCache,
+                                              const CacheToken& token,
+                                              const sp<V1_2::IPreparedModelCallback>& callback) {
+    if (callback.get() == nullptr) {
+        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Invalid callback";
+    }
+
+    auto nnModelCache = NN_TRY(convertInput(modelCache));
+    auto nnDataCache = NN_TRY(convertInput(dataCache));
+    const auto nnToken = nn::CacheToken(token);
+
+    Task task = [device, nnModelCache = std::move(nnModelCache),
+                 nnDataCache = std::move(nnDataCache), nnToken, executor, callback] {
+        auto result = device->prepareModelFromCache({}, nnModelCache, nnDataCache, nnToken);
+        notify(callback.get(), std::move(result), executor);
+    };
+    executor(std::move(task), {});
+
+    return {};
+}
+
+nn::GeneralResult<void> prepareModelFromCache_1_3(
+        const nn::SharedDevice& device, const Executor& executor,
+        const V1_3::OptionalTimePoint& deadline, const hidl_vec<hidl_handle>& modelCache,
+        const hidl_vec<hidl_handle>& dataCache, const CacheToken& token,
+        const sp<V1_3::IPreparedModelCallback>& callback) {
+    if (callback.get() == nullptr) {
+        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Invalid callback";
+    }
+
+    const auto nnDeadline = NN_TRY(convertInput(deadline));
+    auto nnModelCache = NN_TRY(convertInput(modelCache));
+    auto nnDataCache = NN_TRY(convertInput(dataCache));
+    const auto nnToken = nn::CacheToken(token);
+
+    auto task = [device, nnDeadline, nnModelCache = std::move(nnModelCache),
+                 nnDataCache = std::move(nnDataCache), nnToken, executor, callback] {
+        auto result = device->prepareModelFromCache(nnDeadline, nnModelCache, nnDataCache, nnToken);
+        notify(callback.get(), std::move(result), executor);
+    };
+    executor(std::move(task), nnDeadline);
+
+    return {};
+}
+
+nn::GeneralResult<nn::SharedPreparedModel> downcast(const sp<V1_3::IPreparedModel>& preparedModel) {
+    if (preparedModel == nullptr) {
+        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "preparedModel is nullptr";
+    }
+    if (preparedModel->isRemote()) {
+        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Cannot convert remote models";
+    }
+
+    // This static_cast is safe because adapter::PreparedModel is the only class that implements
+    // the IPreparedModel interface in the adapter service code.
+    const auto* casted = static_cast<const PreparedModel*>(preparedModel.get());
+    return casted->getUnderlyingPreparedModel();
+}
+
+nn::GeneralResult<std::vector<nn::SharedPreparedModel>> downcastAll(
+        const hidl_vec<sp<V1_3::IPreparedModel>>& preparedModels) {
+    std::vector<nn::SharedPreparedModel> canonical;
+    canonical.reserve(preparedModels.size());
+    for (const auto& preparedModel : preparedModels) {
+        canonical.push_back(NN_TRY(downcast(preparedModel)));
+    }
+    return canonical;
+}
+
+nn::GeneralResult<std::pair<sp<V1_3::IBuffer>, uint32_t>> allocate(
+        const nn::SharedDevice& device, const V1_3::BufferDesc& desc,
+        const hidl_vec<sp<V1_3::IPreparedModel>>& preparedModels,
+        const hidl_vec<V1_3::BufferRole>& inputRoles,
+        const hidl_vec<V1_3::BufferRole>& outputRoles) {
+    auto nnDesc = NN_TRY(convertInput(desc));
+    auto nnPreparedModels = NN_TRY(downcastAll(preparedModels));
+    auto nnInputRoles = NN_TRY(convertInput(inputRoles));
+    auto nnOutputRoles = NN_TRY(convertInput(outputRoles));
+
+    auto buffer = NN_TRY(device->allocate(nnDesc, nnPreparedModels, nnInputRoles, nnOutputRoles));
+
+    const nn::Request::MemoryDomainToken token = buffer->getToken();
+    auto hidlBuffer = sp<Buffer>::make(std::move(buffer));
+    return std::make_pair(std::move(hidlBuffer), static_cast<uint32_t>(token));
+}
+
+}  // namespace
+
+Device::Device(nn::SharedDevice device, Executor executor)
+    : kDevice(std::move(device)), kExecutor(std::move(executor)) {
+    CHECK(kDevice != nullptr);
+    CHECK(kExecutor != nullptr);
+}
+
+Return<void> Device::getCapabilities(getCapabilities_cb cb) {
+    const auto capabilities = V1_0::utils::convert(kDevice->getCapabilities()).value();
+    cb(V1_0::ErrorStatus::NONE, capabilities);
+    return Void();
+}
+
+Return<void> Device::getCapabilities_1_1(getCapabilities_1_1_cb cb) {
+    const auto capabilities = V1_1::utils::convert(kDevice->getCapabilities()).value();
+    cb(V1_0::ErrorStatus::NONE, capabilities);
+    return Void();
+}
+
+Return<void> Device::getCapabilities_1_2(getCapabilities_1_2_cb cb) {
+    const auto capabilities = V1_2::utils::convert(kDevice->getCapabilities()).value();
+    cb(V1_0::ErrorStatus::NONE, capabilities);
+    return Void();
+}
+
+Return<void> Device::getCapabilities_1_3(getCapabilities_1_3_cb cb) {
+    const auto capabilities = V1_3::utils::convert(kDevice->getCapabilities()).value();
+    cb(V1_3::ErrorStatus::NONE, capabilities);
+    return Void();
+}
+
+Return<void> Device::getVersionString(getVersionString_cb cb) {
+    cb(V1_0::ErrorStatus::NONE, kDevice->getVersionString());
+    return Void();
+}
+
+Return<void> Device::getType(getType_cb cb) {
+    const auto maybeDeviceType = V1_2::utils::convert(kDevice->getType());
+    if (!maybeDeviceType.has_value()) {
+        const auto& [message, code] = maybeDeviceType.error();
+        LOG(ERROR) << "adapter::Device::getType failed with " << code << ": " << message;
+        cb(V1_2::utils::convert(code).value(), {});
+    } else {
+        cb(V1_0::ErrorStatus::NONE, maybeDeviceType.value());
+    }
+    return Void();
+}
+
+Return<void> Device::getSupportedExtensions(getSupportedExtensions_cb cb) {
+    const auto maybeSupportedExtensions = V1_2::utils::convert(kDevice->getSupportedExtensions());
+    if (!maybeSupportedExtensions.has_value()) {
+        const auto& [message, code] = maybeSupportedExtensions.error();
+        LOG(ERROR) << "adapter::Device::getSupportedExtensions failed with " << code << ": "
+                   << message;
+        cb(V1_2::utils::convert(code).value(), {});
+    } else {
+        cb(V1_0::ErrorStatus::NONE, maybeSupportedExtensions.value());
+    }
+    return Void();
+}
+
+Return<void> Device::getSupportedOperations(const V1_0::Model& model,
+                                            getSupportedOperations_cb cb) {
+    const auto result = adapter::getSupportedOperations(kDevice, model);
+    if (!result.has_value()) {
+        const auto& [message, code] = result.error();
+        LOG(ERROR) << "adapter::Device::getSupportedOperations_1_0 failed with " << code << ": "
+                   << message;
+        cb(V1_0::utils::convert(code).value(), {});
+    } else {
+        cb(V1_0::ErrorStatus::NONE, result.value());
+    }
+    return Void();
+}
+
+Return<void> Device::getSupportedOperations_1_1(const V1_1::Model& model,
+                                                getSupportedOperations_1_1_cb cb) {
+    const auto result = adapter::getSupportedOperations(kDevice, model);
+    if (!result.has_value()) {
+        const auto& [message, code] = result.error();
+        LOG(ERROR) << "adapter::Device::getSupportedOperations_1_1 failed with " << code << ": "
+                   << message;
+        cb(V1_1::utils::convert(code).value(), {});
+    } else {
+        cb(V1_0::ErrorStatus::NONE, result.value());
+    }
+    return Void();
+}
+
+Return<void> Device::getSupportedOperations_1_2(const V1_2::Model& model,
+                                                getSupportedOperations_1_2_cb cb) {
+    const auto result = adapter::getSupportedOperations(kDevice, model);
+    if (!result.has_value()) {
+        const auto& [message, code] = result.error();
+        LOG(ERROR) << "adapter::Device::getSupportedOperations_1_2 failed with " << code << ": "
+                   << message;
+        cb(V1_2::utils::convert(code).value(), {});
+    } else {
+        cb(V1_0::ErrorStatus::NONE, result.value());
+    }
+    return Void();
+}
+
+Return<void> Device::getSupportedOperations_1_3(const V1_3::Model& model,
+                                                getSupportedOperations_1_3_cb cb) {
+    const auto result = adapter::getSupportedOperations(kDevice, model);
+    if (!result.has_value()) {
+        const auto& [message, code] = result.error();
+        LOG(ERROR) << "adapter::Device::getSupportedOperations_1_3 failed with " << code << ": "
+                   << message;
+        cb(V1_3::utils::convert(code).value(), {});
+    } else {
+        cb(V1_3::ErrorStatus::NONE, result.value());
+    }
+    return Void();
+}
+
+Return<void> Device::getNumberOfCacheFilesNeeded(getNumberOfCacheFilesNeeded_cb cb) {
+    const auto [numModelCache, numDataCache] = kDevice->getNumberOfCacheFilesNeeded();
+    cb(V1_0::ErrorStatus::NONE, numModelCache, numDataCache);
+    return Void();
+}
+
+Return<V1_0::ErrorStatus> Device::prepareModel(const V1_0::Model& model,
+                                               const sp<V1_0::IPreparedModelCallback>& callback) {
+    auto result = adapter::prepareModel(kDevice, kExecutor, model, callback);
+    if (!result.has_value()) {
+        auto [message, code] = std::move(result).error();
+        LOG(ERROR) << "adapter::Device::prepareModel failed with " << code << ": " << message;
+        notify(callback.get(), code, nullptr);
+        return V1_0::utils::convert(code).value();
+    }
+    return V1_0::ErrorStatus::NONE;
+}
+
+Return<V1_0::ErrorStatus> Device::prepareModel_1_1(
+        const V1_1::Model& model, V1_1::ExecutionPreference preference,
+        const sp<V1_0::IPreparedModelCallback>& callback) {
+    auto result = adapter::prepareModel_1_1(kDevice, kExecutor, model, preference, callback);
+    if (!result.has_value()) {
+        auto [message, code] = std::move(result).error();
+        LOG(ERROR) << "adapter::Device::prepareModel_1_1 failed with " << code << ": " << message;
+        notify(callback.get(), code, nullptr);
+        return V1_1::utils::convert(code).value();
+    }
+    return V1_0::ErrorStatus::NONE;
+}
+
+Return<V1_0::ErrorStatus> Device::prepareModel_1_2(
+        const V1_2::Model& model, V1_1::ExecutionPreference preference,
+        const hidl_vec<hidl_handle>& modelCache, const hidl_vec<hidl_handle>& dataCache,
+        const CacheToken& token, const sp<V1_2::IPreparedModelCallback>& callback) {
+    auto result = adapter::prepareModel_1_2(kDevice, kExecutor, model, preference, modelCache,
+                                            dataCache, token, callback);
+    if (!result.has_value()) {
+        auto [message, code] = std::move(result).error();
+        LOG(ERROR) << "adapter::Device::prepareModel_1_2 failed with " << code << ": " << message;
+        notify(callback.get(), code, nullptr);
+        return V1_2::utils::convert(code).value();
+    }
+    return V1_0::ErrorStatus::NONE;
+}
+
+Return<V1_3::ErrorStatus> Device::prepareModel_1_3(
+        const V1_3::Model& model, V1_1::ExecutionPreference preference, V1_3::Priority priority,
+        const V1_3::OptionalTimePoint& deadline, const hidl_vec<hidl_handle>& modelCache,
+        const hidl_vec<hidl_handle>& dataCache, const CacheToken& token,
+        const sp<V1_3::IPreparedModelCallback>& callback) {
+    auto result = adapter::prepareModel_1_3(kDevice, kExecutor, model, preference, priority,
+                                            deadline, modelCache, dataCache, token, callback);
+    if (!result.has_value()) {
+        auto [message, code] = std::move(result).error();
+        LOG(ERROR) << "adapter::Device::prepareModel_1_3 failed with " << code << ": " << message;
+        notify(callback.get(), code, nullptr);
+        return V1_3::utils::convert(code).value();
+    }
+    return V1_3::ErrorStatus::NONE;
+}
+
+Return<V1_0::ErrorStatus> Device::prepareModelFromCache(
+        const hidl_vec<hidl_handle>& modelCache, const hidl_vec<hidl_handle>& dataCache,
+        const CacheToken& token, const sp<V1_2::IPreparedModelCallback>& callback) {
+    auto result = adapter::prepareModelFromCache(kDevice, kExecutor, modelCache, dataCache, token,
+                                                 callback);
+    if (!result.has_value()) {
+        auto [message, code] = std::move(result).error();
+        LOG(ERROR) << "adapter::Device::prepareModelFromCache failed with " << code << ": "
+                   << message;
+        notify(callback.get(), code, nullptr);
+        return V1_2::utils::convert(code).value();
+    }
+    return V1_0::ErrorStatus::NONE;
+}
+
+Return<V1_3::ErrorStatus> Device::prepareModelFromCache_1_3(
+        const V1_3::OptionalTimePoint& deadline, const hidl_vec<hidl_handle>& modelCache,
+        const hidl_vec<hidl_handle>& dataCache, const CacheToken& token,
+        const sp<V1_3::IPreparedModelCallback>& callback) {
+    auto result = adapter::prepareModelFromCache_1_3(kDevice, kExecutor, deadline, modelCache,
+                                                     dataCache, token, callback);
+    if (!result.has_value()) {
+        auto [message, code] = std::move(result).error();
+        LOG(ERROR) << "adapter::Device::prepareModelFromCache_1_3 failed with " << code << ": "
+                   << message;
+        notify(callback.get(), code, nullptr);
+        return V1_3::utils::convert(code).value();
+    }
+    return V1_3::ErrorStatus::NONE;
+}
+
+Return<V1_0::DeviceStatus> Device::getStatus() {
+    return V1_0::DeviceStatus::AVAILABLE;
+}
+
+Return<void> Device::allocate(const V1_3::BufferDesc& desc,
+                              const hidl_vec<sp<V1_3::IPreparedModel>>& preparedModels,
+                              const hidl_vec<V1_3::BufferRole>& inputRoles,
+                              const hidl_vec<V1_3::BufferRole>& outputRoles, allocate_cb cb) {
+    auto result = adapter::allocate(kDevice, desc, preparedModels, inputRoles, outputRoles);
+    if (!result.has_value()) {
+        const auto [message, code] = std::move(result).error();
+        LOG(ERROR) << "adapter::Device::allocate failed with " << code << ": " << message;
+        cb(V1_3::utils::convert(code).value(), nullptr, /*token=*/0);
+        return Void();
+    }
+    auto [buffer, token] = std::move(result).value();
+    cb(V1_3::ErrorStatus::NONE, buffer, token);
+    return Void();
+}
+
+}  // namespace android::hardware::neuralnetworks::adapter
diff --git a/neuralnetworks/utils/adapter/hidl/src/PreparedModel.cpp b/neuralnetworks/utils/adapter/hidl/src/PreparedModel.cpp
new file mode 100644
index 0000000..c6055a6
--- /dev/null
+++ b/neuralnetworks/utils/adapter/hidl/src/PreparedModel.cpp
@@ -0,0 +1,434 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "PreparedModel.h"
+
+#include "Burst.h"
+
+#include <android-base/logging.h>
+#include <android/hardware/neuralnetworks/1.0/IExecutionCallback.h>
+#include <android/hardware/neuralnetworks/1.0/types.h>
+#include <android/hardware/neuralnetworks/1.2/IBurstCallback.h>
+#include <android/hardware/neuralnetworks/1.2/IExecutionCallback.h>
+#include <android/hardware/neuralnetworks/1.2/types.h>
+#include <android/hardware/neuralnetworks/1.3/IExecutionCallback.h>
+#include <android/hardware/neuralnetworks/1.3/IFencedExecutionCallback.h>
+#include <android/hardware/neuralnetworks/1.3/IPreparedModel.h>
+#include <android/hardware/neuralnetworks/1.3/types.h>
+#include <nnapi/IPreparedModel.h>
+#include <nnapi/TypeUtils.h>
+#include <nnapi/Types.h>
+#include <nnapi/Validation.h>
+#include <nnapi/hal/1.0/Utils.h>
+#include <nnapi/hal/1.2/Utils.h>
+#include <nnapi/hal/1.3/Conversions.h>
+#include <nnapi/hal/1.3/Utils.h>
+
+#include <memory>
+#include <thread>
+
+// See hardware/interfaces/neuralnetworks/utils/README.md for more information on HIDL interface
+// lifetimes across processes and for protecting asynchronous calls across HIDL.
+
+namespace android::hardware::neuralnetworks::adapter {
+namespace {
+
+template <typename Type>
+auto convertInput(const Type& object) -> decltype(nn::convert(std::declval<Type>())) {
+    auto result = nn::convert(object);
+    if (!result.has_value()) {
+        result.error().code = nn::ErrorStatus::INVALID_ARGUMENT;
+    }
+    return result;
+}
+
+nn::GeneralResult<nn::Version> validateRequestForModel(const nn::Request& request,
+                                                       const nn::Model& model) {
+    nn::GeneralResult<nn::Version> version = nn::validateRequestForModel(request, model);
+    if (!version.ok()) {
+        version.error().code = nn::ErrorStatus::INVALID_ARGUMENT;
+    }
+    return version;
+}
+
+class FencedExecutionCallback final : public V1_3::IFencedExecutionCallback {
+  public:
+    explicit FencedExecutionCallback(const nn::ExecuteFencedInfoCallback& callback)
+        : kCallback(callback) {
+        CHECK(callback != nullptr);
+    }
+
+    Return<void> getExecutionInfo(getExecutionInfo_cb cb) override {
+        const auto result = kCallback();
+        if (!result.has_value()) {
+            const auto& [message, code] = result.error();
+            const auto status =
+                    V1_3::utils::convert(code).value_or(V1_3::ErrorStatus::GENERAL_FAILURE);
+            LOG(ERROR) << message;
+            cb(status, V1_2::utils::kNoTiming, V1_2::utils::kNoTiming);
+            return Void();
+        }
+        const auto [timingLaunched, timingFenced] = result.value();
+        const auto hidlTimingLaunched = V1_3::utils::convert(timingLaunched).value();
+        const auto hidlTimingFenced = V1_3::utils::convert(timingFenced).value();
+        cb(V1_3::ErrorStatus::NONE, hidlTimingLaunched, hidlTimingFenced);
+        return Void();
+    }
+
+  private:
+    const nn::ExecuteFencedInfoCallback kCallback;
+};
+
+using ExecutionResult = nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>>;
+
+void notify(V1_0::IExecutionCallback* callback, nn::ErrorStatus status,
+            const std::vector<nn::OutputShape>& /*outputShapes*/, const nn::Timing& /*timing*/) {
+    if (callback != nullptr) {
+        const auto hidlStatus = V1_0::utils::convert(status).value();
+        const auto ret = callback->notify(hidlStatus);
+        if (!ret.isOk()) {
+            LOG(ERROR) << "V1_0::IExecutionCallback::notify failed with " << ret.description();
+        }
+    }
+}
+
+void notify(V1_2::IExecutionCallback* callback, nn::ErrorStatus status,
+            const std::vector<nn::OutputShape>& outputShapes, const nn::Timing& timing) {
+    if (callback != nullptr) {
+        const auto hidlStatus = V1_2::utils::convert(status).value();
+        const auto hidlOutputShapes = V1_2::utils::convert(outputShapes).value();
+        const auto hidlTiming = V1_2::utils::convert(timing).value();
+        const auto ret = callback->notify_1_2(hidlStatus, hidlOutputShapes, hidlTiming);
+        if (!ret.isOk()) {
+            LOG(ERROR) << "V1_2::IExecutionCallback::notify_1_2 failed with " << ret.description();
+        }
+    }
+}
+
+void notify(V1_3::IExecutionCallback* callback, nn::ErrorStatus status,
+            const std::vector<nn::OutputShape>& outputShapes, const nn::Timing& timing) {
+    if (callback != nullptr) {
+        const auto hidlStatus = V1_3::utils::convert(status).value();
+        const auto hidlOutputShapes = V1_3::utils::convert(outputShapes).value();
+        const auto hidlTiming = V1_3::utils::convert(timing).value();
+        const auto ret = callback->notify_1_3(hidlStatus, hidlOutputShapes, hidlTiming);
+        if (!ret.isOk()) {
+            LOG(ERROR) << "V1_3::IExecutionCallback::notify_1_3 failed with " << ret.description();
+        }
+    }
+}
+
+template <typename CallbackType>
+void notify(CallbackType* callback, ExecutionResult result) {
+    if (!result.has_value()) {
+        const auto [message, status, outputShapes] = std::move(result).error();
+        LOG(ERROR) << message;
+        notify(callback, status, outputShapes, {});
+    } else {
+        const auto [outputShapes, timing] = std::move(result).value();
+        notify(callback, nn::ErrorStatus::NONE, outputShapes, timing);
+    }
+}
+
+nn::GeneralResult<void> execute(const nn::SharedPreparedModel& preparedModel,
+                                const Executor& executor, const V1_0::Request& request,
+                                const sp<V1_0::IExecutionCallback>& callback) {
+    if (callback.get() == nullptr) {
+        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Invalid callback";
+    }
+
+    auto nnRequest = NN_TRY(convertInput(request));
+
+    const std::any resource = preparedModel->getUnderlyingResource();
+    if (const auto* model = std::any_cast<const nn::Model*>(&resource)) {
+        CHECK(*model != nullptr);
+        NN_TRY(adapter::validateRequestForModel(nnRequest, **model));
+    }
+
+    Task task = [preparedModel, nnRequest = std::move(nnRequest), callback] {
+        auto result = preparedModel->execute(nnRequest, nn::MeasureTiming::NO, {}, {}, {}, {});
+        notify(callback.get(), std::move(result));
+    };
+    executor(std::move(task), {});
+
+    return {};
+}
+
+nn::GeneralResult<void> execute_1_2(const nn::SharedPreparedModel& preparedModel,
+                                    const Executor& executor, const V1_0::Request& request,
+                                    V1_2::MeasureTiming measure,
+                                    const sp<V1_2::IExecutionCallback>& callback) {
+    if (callback.get() == nullptr) {
+        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Invalid callback";
+    }
+
+    auto nnRequest = NN_TRY(convertInput(request));
+    const auto nnMeasure = NN_TRY(convertInput(measure));
+
+    const std::any resource = preparedModel->getUnderlyingResource();
+    if (const auto* model = std::any_cast<const nn::Model*>(&resource)) {
+        CHECK(*model != nullptr);
+        NN_TRY(adapter::validateRequestForModel(nnRequest, **model));
+    }
+
+    Task task = [preparedModel, nnRequest = std::move(nnRequest), nnMeasure, callback] {
+        auto result = preparedModel->execute(nnRequest, nnMeasure, {}, {}, {}, {});
+        notify(callback.get(), std::move(result));
+    };
+    executor(std::move(task), {});
+
+    return {};
+}
+
+nn::GeneralResult<void> execute_1_3(const nn::SharedPreparedModel& preparedModel,
+                                    const Executor& executor, const V1_3::Request& request,
+                                    V1_2::MeasureTiming measure,
+                                    const V1_3::OptionalTimePoint& deadline,
+                                    const V1_3::OptionalTimeoutDuration& loopTimeoutDuration,
+                                    const sp<V1_3::IExecutionCallback>& callback) {
+    if (callback.get() == nullptr) {
+        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Invalid callback";
+    }
+
+    auto nnRequest = NN_TRY(convertInput(request));
+    const auto nnMeasure = NN_TRY(convertInput(measure));
+    const auto nnDeadline = NN_TRY(convertInput(deadline));
+    const auto nnLoopTimeoutDuration = NN_TRY(convertInput(loopTimeoutDuration));
+
+    const std::any resource = preparedModel->getUnderlyingResource();
+    if (const auto* model = std::any_cast<const nn::Model*>(&resource)) {
+        CHECK(*model != nullptr);
+        NN_TRY(adapter::validateRequestForModel(nnRequest, **model));
+    }
+
+    Task task = [preparedModel, nnRequest = std::move(nnRequest), nnMeasure, nnDeadline,
+                 nnLoopTimeoutDuration, callback] {
+        auto result = preparedModel->execute(nnRequest, nnMeasure, nnDeadline,
+                                             nnLoopTimeoutDuration, {}, {});
+        notify(callback.get(), std::move(result));
+    };
+    executor(std::move(task), nnDeadline);
+
+    return {};
+}
+
+nn::ExecutionResult<std::pair<hidl_vec<V1_2::OutputShape>, V1_2::Timing>> executeSynchronously(
+        const nn::SharedPreparedModel& preparedModel, const V1_0::Request& request,
+        V1_2::MeasureTiming measure) {
+    const auto nnRequest = NN_TRY(convertInput(request));
+    const auto nnMeasure = NN_TRY(convertInput(measure));
+
+    const auto [outputShapes, timing] =
+            NN_TRY(preparedModel->execute(nnRequest, nnMeasure, {}, {}, {}, {}));
+
+    auto hidlOutputShapes = NN_TRY(V1_2::utils::convert(outputShapes));
+    const auto hidlTiming = NN_TRY(V1_2::utils::convert(timing));
+    return std::make_pair(std::move(hidlOutputShapes), hidlTiming);
+}
+
+nn::ExecutionResult<std::pair<hidl_vec<V1_2::OutputShape>, V1_2::Timing>> executeSynchronously_1_3(
+        const nn::SharedPreparedModel& preparedModel, const V1_3::Request& request,
+        V1_2::MeasureTiming measure, const V1_3::OptionalTimePoint& deadline,
+        const V1_3::OptionalTimeoutDuration& loopTimeoutDuration) {
+    const auto nnRequest = NN_TRY(convertInput(request));
+    const auto nnMeasure = NN_TRY(convertInput(measure));
+    const auto nnDeadline = NN_TRY(convertInput(deadline));
+    const auto nnLoopTimeoutDuration = NN_TRY(convertInput(loopTimeoutDuration));
+
+    const auto [outputShapes, timing] = NN_TRY(preparedModel->execute(
+            nnRequest, nnMeasure, nnDeadline, nnLoopTimeoutDuration, {}, {}));
+
+    auto hidlOutputShapes = NN_TRY(V1_3::utils::convert(outputShapes));
+    const auto hidlTiming = NN_TRY(V1_3::utils::convert(timing));
+    return std::make_pair(std::move(hidlOutputShapes), hidlTiming);
+}
+
+nn::GeneralResult<std::vector<nn::SyncFence>> convertSyncFences(
+        const hidl_vec<hidl_handle>& handles) {
+    auto nnHandles = NN_TRY(convertInput(handles));
+    std::vector<nn::SyncFence> syncFences;
+    syncFences.reserve(handles.size());
+    for (auto&& handle : nnHandles) {
+        if (auto syncFence = nn::SyncFence::create(std::move(handle)); !syncFence.ok()) {
+            return nn::error(nn::ErrorStatus::INVALID_ARGUMENT) << std::move(syncFence).error();
+        } else {
+            syncFences.push_back(std::move(syncFence).value());
+        }
+    }
+    return syncFences;
+}
+
+nn::GeneralResult<sp<V1_2::IBurstContext>> configureExecutionBurst(
+        const nn::SharedPreparedModel& preparedModel, const sp<V1_2::IBurstCallback>& callback,
+        const MQDescriptorSync<V1_2::FmqRequestDatum>& requestChannel,
+        const MQDescriptorSync<V1_2::FmqResultDatum>& resultChannel) {
+    auto burstExecutor = NN_TRY(preparedModel->configureExecutionBurst());
+    return Burst::create(callback, requestChannel, resultChannel, std::move(burstExecutor),
+                         V1_2::utils::getBurstServerPollingTimeWindow());
+}
+
+nn::GeneralResult<std::pair<hidl_handle, sp<V1_3::IFencedExecutionCallback>>> executeFenced(
+        const nn::SharedPreparedModel& preparedModel, const V1_3::Request& request,
+        const hidl_vec<hidl_handle>& waitFor, V1_2::MeasureTiming measure,
+        const V1_3::OptionalTimePoint& deadline,
+        const V1_3::OptionalTimeoutDuration& loopTimeoutDuration,
+        const V1_3::OptionalTimeoutDuration& duration) {
+    const auto nnRequest = NN_TRY(convertInput(request));
+    const auto nnWaitFor = NN_TRY(convertSyncFences(waitFor));
+    const auto nnMeasure = NN_TRY(convertInput(measure));
+    const auto nnDeadline = NN_TRY(convertInput(deadline));
+    const auto nnLoopTimeoutDuration = NN_TRY(convertInput(loopTimeoutDuration));
+    const auto nnDuration = NN_TRY(convertInput(duration));
+
+    auto [syncFence, executeFencedCallback] =
+            NN_TRY(preparedModel->executeFenced(nnRequest, nnWaitFor, nnMeasure, nnDeadline,
+                                                nnLoopTimeoutDuration, nnDuration, {}, {}));
+
+    auto hidlSyncFence = NN_TRY(V1_3::utils::convert(syncFence.getSharedHandle()));
+    auto hidlExecuteFencedCallback = sp<FencedExecutionCallback>::make(executeFencedCallback);
+    return std::make_pair(std::move(hidlSyncFence), std::move(hidlExecuteFencedCallback));
+}
+
+}  // namespace
+
+PreparedModel::PreparedModel(nn::SharedPreparedModel preparedModel, Executor executor)
+    : kPreparedModel(std::move(preparedModel)), kExecutor(std::move(executor)) {
+    CHECK(kPreparedModel != nullptr);
+    CHECK(kExecutor != nullptr);
+}
+
+nn::SharedPreparedModel PreparedModel::getUnderlyingPreparedModel() const {
+    return kPreparedModel;
+}
+
+Return<V1_0::ErrorStatus> PreparedModel::execute(const V1_0::Request& request,
+                                                 const sp<V1_0::IExecutionCallback>& callback) {
+    auto result = adapter::execute(kPreparedModel, kExecutor, request, callback);
+    if (!result.has_value()) {
+        auto [message, code] = std::move(result).error();
+        LOG(ERROR) << "adapter::PreparedModel::execute failed with " << code << ": " << message;
+        notify(callback.get(), code, {}, {});
+        return V1_0::utils::convert(code).value();
+    }
+    return V1_0::ErrorStatus::NONE;
+}
+
+Return<V1_0::ErrorStatus> PreparedModel::execute_1_2(const V1_0::Request& request,
+                                                     V1_2::MeasureTiming measure,
+                                                     const sp<V1_2::IExecutionCallback>& callback) {
+    auto result = adapter::execute_1_2(kPreparedModel, kExecutor, request, measure, callback);
+    if (!result.has_value()) {
+        auto [message, code] = std::move(result).error();
+        LOG(ERROR) << "adapter::PreparedModel::execute_1_2 failed with " << code << ": " << message;
+        notify(callback.get(), code, {}, {});
+        return V1_2::utils::convert(code).value();
+    }
+    return V1_0::ErrorStatus::NONE;
+}
+
+Return<V1_3::ErrorStatus> PreparedModel::execute_1_3(
+        const V1_3::Request& request, V1_2::MeasureTiming measure,
+        const V1_3::OptionalTimePoint& deadline,
+        const V1_3::OptionalTimeoutDuration& loopTimeoutDuration,
+        const sp<V1_3::IExecutionCallback>& callback) {
+    auto result = adapter::execute_1_3(kPreparedModel, kExecutor, request, measure, deadline,
+                                       loopTimeoutDuration, callback);
+    if (!result.has_value()) {
+        auto [message, code] = std::move(result).error();
+        LOG(ERROR) << "adapter::PreparedModel::execute_1_3 failed with " << code << ": " << message;
+        notify(callback.get(), code, {}, {});
+        return V1_3::utils::convert(code).value();
+    }
+    return V1_3::ErrorStatus::NONE;
+}
+
+Return<void> PreparedModel::executeSynchronously(const V1_0::Request& request,
+                                                 V1_2::MeasureTiming measure,
+                                                 executeSynchronously_cb cb) {
+    auto result = adapter::executeSynchronously(kPreparedModel, request, measure);
+    if (!result.has_value()) {
+        auto [message, code, outputShapes] = std::move(result).error();
+        LOG(ERROR) << "adapter::PreparedModel::executeSynchronously failed with " << code << ": "
+                   << message;
+        cb(V1_2::utils::convert(code).value(), V1_2::utils::convert(outputShapes).value(),
+           V1_2::utils::kNoTiming);
+        return Void();
+    }
+    auto [outputShapes, timing] = std::move(result).value();
+    cb(V1_0::ErrorStatus::NONE, outputShapes, timing);
+    return Void();
+}
+
+Return<void> PreparedModel::executeSynchronously_1_3(
+        const V1_3::Request& request, V1_2::MeasureTiming measure,
+        const V1_3::OptionalTimePoint& deadline,
+        const V1_3::OptionalTimeoutDuration& loopTimeoutDuration, executeSynchronously_1_3_cb cb) {
+    auto result = adapter::executeSynchronously_1_3(kPreparedModel, request, measure, deadline,
+                                                    loopTimeoutDuration);
+    if (!result.has_value()) {
+        auto [message, code, outputShapes] = std::move(result).error();
+        LOG(ERROR) << "adapter::PreparedModel::executeSynchronously_1_3 failed with " << code
+                   << ": " << message;
+        cb(V1_3::utils::convert(code).value(), V1_3::utils::convert(outputShapes).value(),
+           V1_2::utils::kNoTiming);
+        return Void();
+    }
+    auto [outputShapes, timing] = std::move(result).value();
+    cb(V1_3::ErrorStatus::NONE, outputShapes, timing);
+    return Void();
+}
+
+Return<void> PreparedModel::configureExecutionBurst(
+        const sp<V1_2::IBurstCallback>& callback,
+        const MQDescriptorSync<V1_2::FmqRequestDatum>& requestChannel,
+        const MQDescriptorSync<V1_2::FmqResultDatum>& resultChannel,
+        configureExecutionBurst_cb cb) {
+    auto result = adapter::configureExecutionBurst(kPreparedModel, callback, requestChannel,
+                                                   resultChannel);
+    if (!result.has_value()) {
+        auto [message, code] = std::move(result).error();
+        LOG(ERROR) << "adapter::PreparedModel::configureExecutionBurst failed with " << code << ": "
+                   << message;
+        cb(V1_2::utils::convert(code).value(), nullptr);
+        return Void();
+    }
+    auto burstContext = std::move(result).value();
+    cb(V1_0::ErrorStatus::NONE, std::move(burstContext));
+    return Void();
+}
+
+Return<void> PreparedModel::executeFenced(const V1_3::Request& request,
+                                          const hidl_vec<hidl_handle>& waitFor,
+                                          V1_2::MeasureTiming measure,
+                                          const V1_3::OptionalTimePoint& deadline,
+                                          const V1_3::OptionalTimeoutDuration& loopTimeoutDuration,
+                                          const V1_3::OptionalTimeoutDuration& duration,
+                                          executeFenced_cb callback) {
+    auto result = adapter::executeFenced(kPreparedModel, request, waitFor, measure, deadline,
+                                         loopTimeoutDuration, duration);
+    if (!result.has_value()) {
+        auto [message, code] = std::move(result).error();
+        LOG(ERROR) << "adapter::PreparedModel::executeFenced failed with " << code << ": "
+                   << message;
+        callback(V1_3::utils::convert(code).value(), {}, nullptr);
+        return Void();
+    }
+    auto [syncFence, executeFencedCallback] = std::move(result).value();
+    callback(V1_3::ErrorStatus::NONE, syncFence, executeFencedCallback);
+    return Void();
+}
+
+}  // namespace android::hardware::neuralnetworks::adapter
diff --git a/neuralnetworks/utils/adapter/include/nnapi/hal/Adapter.h b/neuralnetworks/utils/adapter/include/nnapi/hal/Adapter.h
deleted file mode 100644
index da00a09..0000000
--- a/neuralnetworks/utils/adapter/include/nnapi/hal/Adapter.h
+++ /dev/null
@@ -1,72 +0,0 @@
-/*
- * Copyright (C) 2020 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_ADAPTER_ADAPTER_H
-#define ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_ADAPTER_ADAPTER_H
-
-#include <android/hardware/neuralnetworks/1.3/IDevice.h>
-#include <nnapi/IDevice.h>
-#include <nnapi/Types.h>
-#include <sys/types.h>
-#include <functional>
-#include <memory>
-
-// See hardware/interfaces/neuralnetworks/utils/README.md for more information on HIDL interface
-// lifetimes across processes and for protecting asynchronous calls across HIDL.
-
-namespace android::hardware::neuralnetworks::adapter {
-
-/**
- * A self-contained unit of work to be executed.
- */
-using Task = std::function<void()>;
-
-/**
- * A type-erased executor which executes a task asynchronously.
- *
- * This executor is also provided with an Application ID (Android User ID) and an optional deadline
- * for when the caller expects is the upper bound for the amount of time to complete the task.
- */
-using Executor = std::function<void(Task, uid_t, nn::OptionalTimePoint)>;
-
-/**
- * Adapt an NNAPI canonical interface object to a HIDL NN HAL interface object.
- *
- * The IPreparedModel object created from IDevice::prepareModel or IDevice::preparedModelFromCache
- * must return "const nn::Model*" from IPreparedModel::getUnderlyingResource().
- *
- * @param device NNAPI canonical IDevice interface object to be adapted.
- * @param executor Type-erased executor to handle executing tasks asynchronously.
- * @return HIDL NN HAL IDevice interface object.
- */
-sp<V1_3::IDevice> adapt(nn::SharedDevice device, Executor executor);
-
-/**
- * Adapt an NNAPI canonical interface object to a HIDL NN HAL interface object.
- *
- * The IPreparedModel object created from IDevice::prepareModel or IDevice::preparedModelFromCache
- * must return "const nn::Model*" from IPreparedModel::getUnderlyingResource().
- *
- * This function uses a default executor, which will execute tasks from a detached thread.
- *
- * @param device NNAPI canonical IDevice interface object to be adapted.
- * @return HIDL NN HAL IDevice interface object.
- */
-sp<V1_3::IDevice> adapt(nn::SharedDevice device);
-
-}  // namespace android::hardware::neuralnetworks::adapter
-
-#endif  // ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_ADAPTER_ADAPTER_H
diff --git a/neuralnetworks/utils/adapter/include/nnapi/hal/PreparedModel.h b/neuralnetworks/utils/adapter/include/nnapi/hal/PreparedModel.h
deleted file mode 100644
index 65763b8..0000000
--- a/neuralnetworks/utils/adapter/include/nnapi/hal/PreparedModel.h
+++ /dev/null
@@ -1,79 +0,0 @@
-/*
- * Copyright (C) 2020 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_ADAPTER_PREPARED_MODEL_H
-#define ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_ADAPTER_PREPARED_MODEL_H
-
-#include "nnapi/hal/Adapter.h"
-
-#include <android/hardware/neuralnetworks/1.0/IExecutionCallback.h>
-#include <android/hardware/neuralnetworks/1.0/types.h>
-#include <android/hardware/neuralnetworks/1.2/IBurstCallback.h>
-#include <android/hardware/neuralnetworks/1.2/IExecutionCallback.h>
-#include <android/hardware/neuralnetworks/1.2/types.h>
-#include <android/hardware/neuralnetworks/1.3/IExecutionCallback.h>
-#include <android/hardware/neuralnetworks/1.3/IPreparedModel.h>
-#include <android/hardware/neuralnetworks/1.3/types.h>
-#include <nnapi/IPreparedModel.h>
-#include <nnapi/Types.h>
-#include <memory>
-
-// See hardware/interfaces/neuralnetworks/utils/README.md for more information on HIDL interface
-// lifetimes across processes and for protecting asynchronous calls across HIDL.
-
-namespace android::hardware::neuralnetworks::adapter {
-
-// Class that adapts nn::IPreparedModel to V1_3::IPreparedModel.
-class PreparedModel final : public V1_3::IPreparedModel {
-  public:
-    PreparedModel(nn::SharedPreparedModel preparedModel, Executor executor, uid_t userId);
-
-    Return<V1_0::ErrorStatus> execute(const V1_0::Request& request,
-                                      const sp<V1_0::IExecutionCallback>& callback) override;
-    Return<V1_0::ErrorStatus> execute_1_2(const V1_0::Request& request, V1_2::MeasureTiming measure,
-                                          const sp<V1_2::IExecutionCallback>& callback) override;
-    Return<V1_3::ErrorStatus> execute_1_3(const V1_3::Request& request, V1_2::MeasureTiming measure,
-                                          const V1_3::OptionalTimePoint& deadline,
-                                          const V1_3::OptionalTimeoutDuration& loopTimeoutDuration,
-                                          const sp<V1_3::IExecutionCallback>& callback) override;
-    Return<void> executeSynchronously(const V1_0::Request& request, V1_2::MeasureTiming measure,
-                                      executeSynchronously_cb cb) override;
-    Return<void> executeSynchronously_1_3(const V1_3::Request& request, V1_2::MeasureTiming measure,
-                                          const V1_3::OptionalTimePoint& deadline,
-                                          const V1_3::OptionalTimeoutDuration& loopTimeoutDuration,
-                                          executeSynchronously_1_3_cb cb) override;
-    Return<void> configureExecutionBurst(
-            const sp<V1_2::IBurstCallback>& callback,
-            const MQDescriptorSync<V1_2::FmqRequestDatum>& requestChannel,
-            const MQDescriptorSync<V1_2::FmqResultDatum>& resultChannel,
-            configureExecutionBurst_cb cb) override;
-    Return<void> executeFenced(const V1_3::Request& request, const hidl_vec<hidl_handle>& waitFor,
-                               V1_2::MeasureTiming measure, const V1_3::OptionalTimePoint& deadline,
-                               const V1_3::OptionalTimeoutDuration& loopTimeoutDuration,
-                               const V1_3::OptionalTimeoutDuration& duration,
-                               executeFenced_cb callback) override;
-
-    nn::SharedPreparedModel getUnderlyingPreparedModel() const;
-
-  private:
-    const nn::SharedPreparedModel kPreparedModel;
-    const Executor kExecutor;
-    const uid_t kUserId;
-};
-
-}  // namespace android::hardware::neuralnetworks::adapter
-
-#endif  // ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_ADAPTER_PREPARED_MODEL_H
diff --git a/neuralnetworks/utils/adapter/src/Adapter.cpp b/neuralnetworks/utils/adapter/src/Adapter.cpp
deleted file mode 100644
index d6f53f0..0000000
--- a/neuralnetworks/utils/adapter/src/Adapter.cpp
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- * Copyright (C) 2020 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "Adapter.h"
-
-#include "Device.h"
-
-#include <android/hardware/neuralnetworks/1.3/IDevice.h>
-#include <nnapi/IDevice.h>
-#include <nnapi/Types.h>
-#include <sys/types.h>
-
-#include <functional>
-#include <memory>
-#include <thread>
-
-// See hardware/interfaces/neuralnetworks/utils/README.md for more information on HIDL interface
-// lifetimes across processes and for protecting asynchronous calls across HIDL.
-
-namespace android::hardware::neuralnetworks::adapter {
-
-sp<V1_3::IDevice> adapt(nn::SharedDevice device, Executor executor) {
-    return sp<Device>::make(std::move(device), std::move(executor));
-}
-
-sp<V1_3::IDevice> adapt(nn::SharedDevice device) {
-    Executor defaultExecutor = [](Task task, uid_t /*uid*/, nn::OptionalTimePoint /*deadline*/) {
-        std::thread(std::move(task)).detach();
-    };
-    return adapt(std::move(device), std::move(defaultExecutor));
-}
-
-}  // namespace android::hardware::neuralnetworks::adapter
diff --git a/neuralnetworks/utils/adapter/src/Burst.cpp b/neuralnetworks/utils/adapter/src/Burst.cpp
deleted file mode 100644
index 8b2e1dd..0000000
--- a/neuralnetworks/utils/adapter/src/Burst.cpp
+++ /dev/null
@@ -1,259 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "Burst.h"
-
-#include <android-base/logging.h>
-#include <nnapi/IBurst.h>
-#include <nnapi/Result.h>
-#include <nnapi/TypeUtils.h>
-#include <nnapi/Types.h>
-#include <nnapi/Validation.h>
-#include <nnapi/hal/1.0/Conversions.h>
-#include <nnapi/hal/1.0/HandleError.h>
-#include <nnapi/hal/1.0/ProtectCallback.h>
-#include <nnapi/hal/1.2/BurstUtils.h>
-#include <nnapi/hal/1.2/Conversions.h>
-#include <nnapi/hal/TransferValue.h>
-
-#include <algorithm>
-#include <cstring>
-#include <limits>
-#include <map>
-#include <memory>
-#include <tuple>
-#include <utility>
-#include <vector>
-
-#include "Tracing.h"
-
-namespace android::hardware::neuralnetworks::adapter {
-namespace {
-
-constexpr V1_2::Timing kTiming = {std::numeric_limits<uint64_t>::max(),
-                                  std::numeric_limits<uint64_t>::max()};
-
-nn::GeneralResult<std::vector<nn::SharedMemory>> getMemoriesCallback(
-        V1_0::ErrorStatus status, const hidl_vec<hidl_memory>& memories) {
-    HANDLE_STATUS_HIDL(status) << "getting burst memories failed with " << toString(status);
-    std::vector<nn::SharedMemory> canonicalMemories;
-    canonicalMemories.reserve(memories.size());
-    for (const auto& memory : memories) {
-        canonicalMemories.push_back(NN_TRY(nn::convert(memory)));
-    }
-    return canonicalMemories;
-}
-
-}  // anonymous namespace
-
-Burst::MemoryCache::MemoryCache(nn::SharedBurst burstExecutor,
-                                sp<V1_2::IBurstCallback> burstCallback)
-    : kBurstExecutor(std::move(burstExecutor)), kBurstCallback(std::move(burstCallback)) {
-    CHECK(kBurstExecutor != nullptr);
-    CHECK(kBurstCallback != nullptr);
-}
-
-nn::GeneralResult<std::vector<std::pair<nn::SharedMemory, nn::IBurst::OptionalCacheHold>>>
-Burst::MemoryCache::getCacheEntries(const std::vector<int32_t>& slots) {
-    std::lock_guard guard(mMutex);
-    NN_TRY(ensureCacheEntriesArePresentLocked(slots));
-
-    std::vector<std::pair<nn::SharedMemory, nn::IBurst::OptionalCacheHold>> results;
-    results.reserve(slots.size());
-    for (int32_t slot : slots) {
-        results.push_back(NN_TRY(getCacheEntryLocked(slot)));
-    }
-
-    return results;
-}
-
-nn::GeneralResult<void> Burst::MemoryCache::ensureCacheEntriesArePresentLocked(
-        const std::vector<int32_t>& slots) {
-    const auto slotIsKnown = [this](int32_t slot)
-                                     REQUIRES(mMutex) { return mCache.count(slot) > 0; };
-
-    // find unique unknown slots
-    std::vector<int32_t> unknownSlots = slots;
-    std::sort(unknownSlots.begin(), unknownSlots.end());
-    auto unknownSlotsEnd = std::unique(unknownSlots.begin(), unknownSlots.end());
-    unknownSlotsEnd = std::remove_if(unknownSlots.begin(), unknownSlotsEnd, slotIsKnown);
-    unknownSlots.erase(unknownSlotsEnd, unknownSlots.end());
-
-    // quick-exit if all slots are known
-    if (unknownSlots.empty()) {
-        return {};
-    }
-
-    auto cb = neuralnetworks::utils::CallbackValue(getMemoriesCallback);
-
-    const auto ret = kBurstCallback->getMemories(unknownSlots, cb);
-    HANDLE_TRANSPORT_FAILURE(ret);
-
-    auto returnedMemories = NN_TRY(cb.take());
-
-    if (returnedMemories.size() != unknownSlots.size()) {
-        return NN_ERROR() << "Burst::MemoryCache::ensureCacheEntriesArePresentLocked: Error "
-                             "retrieving memories -- count mismatch between requested memories ("
-                          << unknownSlots.size() << ") and returned memories ("
-                          << returnedMemories.size() << ")";
-    }
-
-    // add memories to unknown slots
-    for (size_t i = 0; i < unknownSlots.size(); ++i) {
-        addCacheEntryLocked(unknownSlots[i], std::move(returnedMemories[i]));
-    }
-
-    return {};
-}
-
-nn::GeneralResult<std::pair<nn::SharedMemory, nn::IBurst::OptionalCacheHold>>
-Burst::MemoryCache::getCacheEntryLocked(int32_t slot) {
-    if (const auto iter = mCache.find(slot); iter != mCache.end()) {
-        return iter->second;
-    }
-    return NN_ERROR() << "Burst::MemoryCache::getCacheEntryLocked failed because slot " << slot
-                      << " is not present in the cache";
-}
-
-void Burst::MemoryCache::addCacheEntryLocked(int32_t slot, nn::SharedMemory memory) {
-    auto hold = kBurstExecutor->cacheMemory(memory);
-    mCache.emplace(slot, std::make_pair(std::move(memory), std::move(hold)));
-}
-
-void Burst::MemoryCache::removeCacheEntry(int32_t slot) {
-    std::lock_guard guard(mMutex);
-    mCache.erase(slot);
-}
-
-// Burst methods
-
-nn::GeneralResult<sp<Burst>> Burst::create(
-        const sp<V1_2::IBurstCallback>& callback,
-        const MQDescriptorSync<V1_2::FmqRequestDatum>& requestChannel,
-        const MQDescriptorSync<V1_2::FmqResultDatum>& resultChannel, nn::SharedBurst burstExecutor,
-        std::chrono::microseconds pollingTimeWindow) {
-    // check inputs
-    if (callback == nullptr || burstExecutor == nullptr) {
-        return NN_ERROR() << "Burst::create passed a nullptr";
-    }
-
-    // create FMQ objects
-    auto requestChannelReceiver =
-            NN_TRY(V1_2::utils::RequestChannelReceiver::create(requestChannel, pollingTimeWindow));
-    auto resultChannelSender = NN_TRY(V1_2::utils::ResultChannelSender::create(resultChannel));
-
-    // check FMQ objects
-    CHECK(requestChannelReceiver != nullptr);
-    CHECK(resultChannelSender != nullptr);
-
-    // make and return context
-    return sp<Burst>::make(PrivateConstructorTag{}, callback, std::move(requestChannelReceiver),
-                           std::move(resultChannelSender), std::move(burstExecutor));
-}
-
-Burst::Burst(PrivateConstructorTag /*tag*/, const sp<V1_2::IBurstCallback>& callback,
-             std::unique_ptr<V1_2::utils::RequestChannelReceiver> requestChannel,
-             std::unique_ptr<V1_2::utils::ResultChannelSender> resultChannel,
-             nn::SharedBurst burstExecutor)
-    : mCallback(callback),
-      mRequestChannelReceiver(std::move(requestChannel)),
-      mResultChannelSender(std::move(resultChannel)),
-      mBurstExecutor(std::move(burstExecutor)),
-      mMemoryCache(mBurstExecutor, mCallback) {
-    // TODO: highly document the threading behavior of this class
-    mWorker = std::thread([this] { task(); });
-}
-
-Burst::~Burst() {
-    // set teardown flag
-    mTeardown = true;
-    mRequestChannelReceiver->invalidate();
-
-    // wait for task thread to end
-    mWorker.join();
-}
-
-Return<void> Burst::freeMemory(int32_t slot) {
-    mMemoryCache.removeCacheEntry(slot);
-    return Void();
-}
-
-void Burst::task() {
-    // loop until the burst object is being destroyed
-    while (!mTeardown) {
-        // receive request
-        auto arguments = mRequestChannelReceiver->getBlocking();
-
-        // if the request packet was not properly received, return a generic error and skip the
-        // execution
-        //
-        // if the burst is being torn down, skip the execution so the "task" function can end
-        if (!arguments.has_value()) {
-            if (!mTeardown) {
-                mResultChannelSender->send(V1_0::ErrorStatus::GENERAL_FAILURE, {}, kTiming);
-            }
-            continue;
-        }
-
-        // unpack the arguments; types are Request, std::vector<int32_t>, and V1_2::MeasureTiming,
-        // respectively
-        const auto [requestWithoutPools, slotsOfPools, measure] = std::move(arguments).value();
-
-        auto result = execute(requestWithoutPools, slotsOfPools, measure);
-
-        // return result
-        if (result.has_value()) {
-            const auto& [outputShapes, timing] = result.value();
-            mResultChannelSender->send(V1_0::ErrorStatus::NONE, outputShapes, timing);
-        } else {
-            const auto& [message, code, outputShapes] = result.error();
-            LOG(ERROR) << "IBurst::execute failed with " << code << ": " << message;
-            mResultChannelSender->send(V1_2::utils::convert(code).value(),
-                                       V1_2::utils::convert(outputShapes).value(), kTiming);
-        }
-    }
-}
-
-nn::ExecutionResult<std::pair<hidl_vec<V1_2::OutputShape>, V1_2::Timing>> Burst::execute(
-        const V1_0::Request& requestWithoutPools, const std::vector<int32_t>& slotsOfPools,
-        V1_2::MeasureTiming measure) {
-    NNTRACE_FULL(NNTRACE_LAYER_IPC, NNTRACE_PHASE_EXECUTION,
-                 "Burst getting memory, executing, and returning results");
-
-    // ensure executor with cache has required memory
-    const auto cacheEntries = NN_TRY(mMemoryCache.getCacheEntries(slotsOfPools));
-
-    // convert request, populating its pools
-    // This code performs an unvalidated convert because the request object without its pools is
-    // invalid because it is incomplete. Instead, the validation is performed after the memory pools
-    // have been added to the request.
-    auto canonicalRequest = NN_TRY(nn::unvalidatedConvert(requestWithoutPools));
-    CHECK(canonicalRequest.pools.empty());
-    std::transform(cacheEntries.begin(), cacheEntries.end(),
-                   std::back_inserter(canonicalRequest.pools),
-                   [](const auto& cacheEntry) { return cacheEntry.first; });
-    NN_TRY(validate(canonicalRequest));
-
-    nn::MeasureTiming canonicalMeasure = NN_TRY(nn::convert(measure));
-
-    const auto [outputShapes, timing] =
-            NN_TRY(mBurstExecutor->execute(canonicalRequest, canonicalMeasure, {}, {}));
-
-    return std::make_pair(NN_TRY(V1_2::utils::convert(outputShapes)),
-                          NN_TRY(V1_2::utils::convert(timing)));
-}
-
-}  // namespace android::hardware::neuralnetworks::adapter
diff --git a/neuralnetworks/utils/adapter/src/Device.cpp b/neuralnetworks/utils/adapter/src/Device.cpp
deleted file mode 100644
index 96142c3..0000000
--- a/neuralnetworks/utils/adapter/src/Device.cpp
+++ /dev/null
@@ -1,556 +0,0 @@
-/*
- * Copyright (C) 2020 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "Device.h"
-
-#include "Buffer.h"
-#include "PreparedModel.h"
-
-#include <android-base/logging.h>
-#include <android/hardware/neuralnetworks/1.0/IPreparedModelCallback.h>
-#include <android/hardware/neuralnetworks/1.0/types.h>
-#include <android/hardware/neuralnetworks/1.1/types.h>
-#include <android/hardware/neuralnetworks/1.2/IPreparedModelCallback.h>
-#include <android/hardware/neuralnetworks/1.2/types.h>
-#include <android/hardware/neuralnetworks/1.3/IDevice.h>
-#include <android/hardware/neuralnetworks/1.3/IPreparedModelCallback.h>
-#include <android/hardware/neuralnetworks/1.3/types.h>
-#include <hwbinder/IPCThreadState.h>
-#include <nnapi/IBuffer.h>
-#include <nnapi/IDevice.h>
-#include <nnapi/IPreparedModel.h>
-#include <nnapi/Result.h>
-#include <nnapi/TypeUtils.h>
-#include <nnapi/Types.h>
-#include <nnapi/hal/1.0/Conversions.h>
-#include <nnapi/hal/1.0/Utils.h>
-#include <nnapi/hal/1.1/Conversions.h>
-#include <nnapi/hal/1.1/Utils.h>
-#include <nnapi/hal/1.2/Conversions.h>
-#include <nnapi/hal/1.2/Utils.h>
-#include <nnapi/hal/1.3/Conversions.h>
-#include <nnapi/hal/1.3/Utils.h>
-#include <sys/types.h>
-
-#include <memory>
-
-// See hardware/interfaces/neuralnetworks/utils/README.md for more information on HIDL interface
-// lifetimes across processes and for protecting asynchronous calls across HIDL.
-
-namespace android::hardware::neuralnetworks::adapter {
-namespace {
-
-template <typename Type>
-auto convertInput(const Type& object) -> decltype(nn::convert(std::declval<Type>())) {
-    auto result = nn::convert(object);
-    if (!result.has_value()) {
-        result.error().code = nn::ErrorStatus::INVALID_ARGUMENT;
-    }
-    return result;
-}
-
-using PrepareModelResult = nn::GeneralResult<nn::SharedPreparedModel>;
-
-sp<PreparedModel> adaptPreparedModel(nn::SharedPreparedModel preparedModel, Executor executor,
-                                     uid_t userId) {
-    if (preparedModel == nullptr) {
-        return nullptr;
-    }
-    return sp<PreparedModel>::make(std::move(preparedModel), std::move(executor), userId);
-}
-
-void notify(V1_0::IPreparedModelCallback* callback, nn::ErrorStatus status,
-            const sp<PreparedModel>& hidlPreparedModel) {
-    if (callback != nullptr) {
-        const auto hidlStatus = V1_0::utils::convert(status).value();
-        const auto ret = callback->notify(hidlStatus, hidlPreparedModel);
-        if (!ret.isOk()) {
-            LOG(ERROR) << "V1_0::IPreparedModelCallback::notify failed with " << ret.description();
-        }
-    }
-}
-
-void notify(V1_2::IPreparedModelCallback* callback, nn::ErrorStatus status,
-            const sp<PreparedModel>& hidlPreparedModel) {
-    if (callback != nullptr) {
-        const auto hidlStatus = V1_2::utils::convert(status).value();
-        const auto ret = callback->notify_1_2(hidlStatus, hidlPreparedModel);
-        if (!ret.isOk()) {
-            LOG(ERROR) << "V1_2::IPreparedModelCallback::notify_1_2 failed with "
-                       << ret.description();
-        }
-    }
-}
-
-void notify(V1_3::IPreparedModelCallback* callback, nn::ErrorStatus status,
-            const sp<PreparedModel>& hidlPreparedModel) {
-    if (callback != nullptr) {
-        const auto hidlStatus = V1_3::utils::convert(status).value();
-        const auto ret = callback->notify_1_3(hidlStatus, hidlPreparedModel);
-        if (!ret.isOk()) {
-            LOG(ERROR) << "V1_3::IPreparedModelCallback::notify_1_3 failed with "
-                       << ret.description();
-        }
-    }
-}
-
-template <typename CallbackType>
-void notify(CallbackType* callback, PrepareModelResult result, Executor executor, uid_t userId) {
-    if (!result.has_value()) {
-        const auto [message, status] = std::move(result).error();
-        LOG(ERROR) << message;
-        notify(callback, status, nullptr);
-    } else {
-        auto preparedModel = std::move(result).value();
-        auto hidlPreparedModel =
-                adaptPreparedModel(std::move(preparedModel), std::move(executor), userId);
-        notify(callback, nn::ErrorStatus::NONE, std::move(hidlPreparedModel));
-    }
-}
-
-template <typename ModelType>
-nn::GeneralResult<hidl_vec<bool>> getSupportedOperations(const nn::SharedDevice& device,
-                                                         const ModelType& model) {
-    const auto nnModel = NN_TRY(convertInput(model));
-    return NN_TRY(device->getSupportedOperations(nnModel));
-}
-
-nn::GeneralResult<void> prepareModel(const nn::SharedDevice& device, const Executor& executor,
-                                     const V1_0::Model& model,
-                                     const sp<V1_0::IPreparedModelCallback>& callback) {
-    if (callback.get() == nullptr) {
-        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Invalid callback";
-    }
-
-    auto nnModel = NN_TRY(convertInput(model));
-
-    const uid_t userId = hardware::IPCThreadState::self()->getCallingUid();
-    Task task = [device, nnModel = std::move(nnModel), userId, executor, callback] {
-        auto result = device->prepareModel(nnModel, nn::ExecutionPreference::DEFAULT,
-                                           nn::Priority::DEFAULT, {}, {}, {}, {});
-        notify(callback.get(), std::move(result), executor, userId);
-    };
-    executor(std::move(task), userId, {});
-
-    return {};
-}
-
-nn::GeneralResult<void> prepareModel_1_1(const nn::SharedDevice& device, const Executor& executor,
-                                         const V1_1::Model& model,
-                                         V1_1::ExecutionPreference preference,
-                                         const sp<V1_0::IPreparedModelCallback>& callback) {
-    if (callback.get() == nullptr) {
-        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Invalid callback";
-    }
-
-    auto nnModel = NN_TRY(convertInput(model));
-    const auto nnPreference = NN_TRY(convertInput(preference));
-
-    const uid_t userId = hardware::IPCThreadState::self()->getCallingUid();
-    Task task = [device, nnModel = std::move(nnModel), nnPreference, userId, executor, callback] {
-        auto result =
-                device->prepareModel(nnModel, nnPreference, nn::Priority::DEFAULT, {}, {}, {}, {});
-        notify(callback.get(), std::move(result), executor, userId);
-    };
-    executor(std::move(task), userId, {});
-
-    return {};
-}
-
-nn::GeneralResult<void> prepareModel_1_2(const nn::SharedDevice& device, const Executor& executor,
-                                         const V1_2::Model& model,
-                                         V1_1::ExecutionPreference preference,
-                                         const hidl_vec<hidl_handle>& modelCache,
-                                         const hidl_vec<hidl_handle>& dataCache,
-                                         const CacheToken& token,
-                                         const sp<V1_2::IPreparedModelCallback>& callback) {
-    if (callback.get() == nullptr) {
-        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Invalid callback";
-    }
-
-    auto nnModel = NN_TRY(convertInput(model));
-    const auto nnPreference = NN_TRY(convertInput(preference));
-    auto nnModelCache = NN_TRY(convertInput(modelCache));
-    auto nnDataCache = NN_TRY(convertInput(dataCache));
-    const auto nnToken = nn::CacheToken(token);
-
-    const uid_t userId = hardware::IPCThreadState::self()->getCallingUid();
-    Task task = [device, nnModel = std::move(nnModel), nnPreference,
-                 nnModelCache = std::move(nnModelCache), nnDataCache = std::move(nnDataCache),
-                 nnToken, userId, executor, callback] {
-        auto result = device->prepareModel(nnModel, nnPreference, nn::Priority::DEFAULT, {},
-                                           nnModelCache, nnDataCache, nnToken);
-        notify(callback.get(), std::move(result), executor, userId);
-    };
-    executor(std::move(task), userId, {});
-
-    return {};
-}
-
-nn::GeneralResult<void> prepareModel_1_3(
-        const nn::SharedDevice& device, const Executor& executor, const V1_3::Model& model,
-        V1_1::ExecutionPreference preference, V1_3::Priority priority,
-        const V1_3::OptionalTimePoint& deadline, const hidl_vec<hidl_handle>& modelCache,
-        const hidl_vec<hidl_handle>& dataCache, const CacheToken& token,
-        const sp<V1_3::IPreparedModelCallback>& callback) {
-    if (callback.get() == nullptr) {
-        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Invalid callback";
-    }
-
-    auto nnModel = NN_TRY(convertInput(model));
-    const auto nnPreference = NN_TRY(convertInput(preference));
-    const auto nnPriority = NN_TRY(convertInput(priority));
-    const auto nnDeadline = NN_TRY(convertInput(deadline));
-    auto nnModelCache = NN_TRY(convertInput(modelCache));
-    auto nnDataCache = NN_TRY(convertInput(dataCache));
-    const auto nnToken = nn::CacheToken(token);
-
-    const uid_t userId = hardware::IPCThreadState::self()->getCallingUid();
-    Task task = [device, nnModel = std::move(nnModel), nnPreference, nnPriority, nnDeadline,
-                 nnModelCache = std::move(nnModelCache), nnDataCache = std::move(nnDataCache),
-                 nnToken, userId, executor, callback] {
-        auto result = device->prepareModel(nnModel, nnPreference, nnPriority, nnDeadline,
-                                           nnModelCache, nnDataCache, nnToken);
-        notify(callback.get(), std::move(result), executor, userId);
-    };
-    executor(std::move(task), userId, nnDeadline);
-
-    return {};
-}
-
-nn::GeneralResult<void> prepareModelFromCache(const nn::SharedDevice& device,
-                                              const Executor& executor,
-                                              const hidl_vec<hidl_handle>& modelCache,
-                                              const hidl_vec<hidl_handle>& dataCache,
-                                              const CacheToken& token,
-                                              const sp<V1_2::IPreparedModelCallback>& callback) {
-    if (callback.get() == nullptr) {
-        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Invalid callback";
-    }
-
-    auto nnModelCache = NN_TRY(convertInput(modelCache));
-    auto nnDataCache = NN_TRY(convertInput(dataCache));
-    const auto nnToken = nn::CacheToken(token);
-
-    const uid_t userId = hardware::IPCThreadState::self()->getCallingUid();
-    Task task = [device, nnModelCache = std::move(nnModelCache),
-                 nnDataCache = std::move(nnDataCache), nnToken, userId, executor, callback] {
-        auto result = device->prepareModelFromCache({}, nnModelCache, nnDataCache, nnToken);
-        notify(callback.get(), std::move(result), executor, userId);
-    };
-    executor(std::move(task), userId, {});
-
-    return {};
-}
-
-nn::GeneralResult<void> prepareModelFromCache_1_3(
-        const nn::SharedDevice& device, const Executor& executor,
-        const V1_3::OptionalTimePoint& deadline, const hidl_vec<hidl_handle>& modelCache,
-        const hidl_vec<hidl_handle>& dataCache, const CacheToken& token,
-        const sp<V1_3::IPreparedModelCallback>& callback) {
-    if (callback.get() == nullptr) {
-        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Invalid callback";
-    }
-
-    const auto nnDeadline = NN_TRY(convertInput(deadline));
-    auto nnModelCache = NN_TRY(convertInput(modelCache));
-    auto nnDataCache = NN_TRY(convertInput(dataCache));
-    const auto nnToken = nn::CacheToken(token);
-
-    const uid_t userId = hardware::IPCThreadState::self()->getCallingUid();
-    auto task = [device, nnDeadline, nnModelCache = std::move(nnModelCache),
-                 nnDataCache = std::move(nnDataCache), nnToken, userId, executor, callback] {
-        auto result = device->prepareModelFromCache(nnDeadline, nnModelCache, nnDataCache, nnToken);
-        notify(callback.get(), std::move(result), executor, userId);
-    };
-    executor(std::move(task), userId, nnDeadline);
-
-    return {};
-}
-
-nn::GeneralResult<nn::SharedPreparedModel> downcast(const sp<V1_3::IPreparedModel>& preparedModel) {
-    if (preparedModel == nullptr) {
-        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "preparedModel is nullptr";
-    }
-    if (preparedModel->isRemote()) {
-        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Cannot convert remote models";
-    }
-
-    // This static_cast is safe because adapter::PreparedModel is the only class that implements
-    // the IPreparedModel interface in the adapter service code.
-    const auto* casted = static_cast<const PreparedModel*>(preparedModel.get());
-    return casted->getUnderlyingPreparedModel();
-}
-
-nn::GeneralResult<std::vector<nn::SharedPreparedModel>> downcastAll(
-        const hidl_vec<sp<V1_3::IPreparedModel>>& preparedModels) {
-    std::vector<nn::SharedPreparedModel> canonical;
-    canonical.reserve(preparedModels.size());
-    for (const auto& preparedModel : preparedModels) {
-        canonical.push_back(NN_TRY(downcast(preparedModel)));
-    }
-    return canonical;
-}
-
-nn::GeneralResult<std::pair<sp<V1_3::IBuffer>, uint32_t>> allocate(
-        const nn::SharedDevice& device, const V1_3::BufferDesc& desc,
-        const hidl_vec<sp<V1_3::IPreparedModel>>& preparedModels,
-        const hidl_vec<V1_3::BufferRole>& inputRoles,
-        const hidl_vec<V1_3::BufferRole>& outputRoles) {
-    auto nnDesc = NN_TRY(convertInput(desc));
-    auto nnPreparedModels = NN_TRY(downcastAll(preparedModels));
-    auto nnInputRoles = NN_TRY(convertInput(inputRoles));
-    auto nnOutputRoles = NN_TRY(convertInput(outputRoles));
-
-    auto buffer = NN_TRY(device->allocate(nnDesc, nnPreparedModels, nnInputRoles, nnOutputRoles));
-
-    const nn::Request::MemoryDomainToken token = buffer->getToken();
-    auto hidlBuffer = sp<Buffer>::make(std::move(buffer));
-    return std::make_pair(std::move(hidlBuffer), static_cast<uint32_t>(token));
-}
-
-}  // namespace
-
-Device::Device(nn::SharedDevice device, Executor executor)
-    : kDevice(std::move(device)), kExecutor(std::move(executor)) {
-    CHECK(kDevice != nullptr);
-    CHECK(kExecutor != nullptr);
-}
-
-Return<void> Device::getCapabilities(getCapabilities_cb cb) {
-    const auto capabilities = V1_0::utils::convert(kDevice->getCapabilities()).value();
-    cb(V1_0::ErrorStatus::NONE, capabilities);
-    return Void();
-}
-
-Return<void> Device::getCapabilities_1_1(getCapabilities_1_1_cb cb) {
-    const auto capabilities = V1_1::utils::convert(kDevice->getCapabilities()).value();
-    cb(V1_0::ErrorStatus::NONE, capabilities);
-    return Void();
-}
-
-Return<void> Device::getCapabilities_1_2(getCapabilities_1_2_cb cb) {
-    const auto capabilities = V1_2::utils::convert(kDevice->getCapabilities()).value();
-    cb(V1_0::ErrorStatus::NONE, capabilities);
-    return Void();
-}
-
-Return<void> Device::getCapabilities_1_3(getCapabilities_1_3_cb cb) {
-    const auto capabilities = V1_3::utils::convert(kDevice->getCapabilities()).value();
-    cb(V1_3::ErrorStatus::NONE, capabilities);
-    return Void();
-}
-
-Return<void> Device::getVersionString(getVersionString_cb cb) {
-    cb(V1_0::ErrorStatus::NONE, kDevice->getVersionString());
-    return Void();
-}
-
-Return<void> Device::getType(getType_cb cb) {
-    const auto maybeDeviceType = V1_2::utils::convert(kDevice->getType());
-    if (!maybeDeviceType.has_value()) {
-        const auto& [message, code] = maybeDeviceType.error();
-        LOG(ERROR) << "adapter::Device::getType failed with " << code << ": " << message;
-        cb(V1_2::utils::convert(code).value(), {});
-    } else {
-        cb(V1_0::ErrorStatus::NONE, maybeDeviceType.value());
-    }
-    return Void();
-}
-
-Return<void> Device::getSupportedExtensions(getSupportedExtensions_cb cb) {
-    const auto maybeSupportedExtensions = V1_2::utils::convert(kDevice->getSupportedExtensions());
-    if (!maybeSupportedExtensions.has_value()) {
-        const auto& [message, code] = maybeSupportedExtensions.error();
-        LOG(ERROR) << "adapter::Device::getSupportedExtensions failed with " << code << ": "
-                   << message;
-        cb(V1_2::utils::convert(code).value(), {});
-    } else {
-        cb(V1_0::ErrorStatus::NONE, maybeSupportedExtensions.value());
-    }
-    return Void();
-}
-
-Return<void> Device::getSupportedOperations(const V1_0::Model& model,
-                                            getSupportedOperations_cb cb) {
-    const auto result = adapter::getSupportedOperations(kDevice, model);
-    if (!result.has_value()) {
-        const auto& [message, code] = result.error();
-        LOG(ERROR) << "adapter::Device::getSupportedOperations_1_0 failed with " << code << ": "
-                   << message;
-        cb(V1_0::utils::convert(code).value(), {});
-    } else {
-        cb(V1_0::ErrorStatus::NONE, result.value());
-    }
-    return Void();
-}
-
-Return<void> Device::getSupportedOperations_1_1(const V1_1::Model& model,
-                                                getSupportedOperations_1_1_cb cb) {
-    const auto result = adapter::getSupportedOperations(kDevice, model);
-    if (!result.has_value()) {
-        const auto& [message, code] = result.error();
-        LOG(ERROR) << "adapter::Device::getSupportedOperations_1_1 failed with " << code << ": "
-                   << message;
-        cb(V1_1::utils::convert(code).value(), {});
-    } else {
-        cb(V1_0::ErrorStatus::NONE, result.value());
-    }
-    return Void();
-}
-
-Return<void> Device::getSupportedOperations_1_2(const V1_2::Model& model,
-                                                getSupportedOperations_1_2_cb cb) {
-    const auto result = adapter::getSupportedOperations(kDevice, model);
-    if (!result.has_value()) {
-        const auto& [message, code] = result.error();
-        LOG(ERROR) << "adapter::Device::getSupportedOperations_1_2 failed with " << code << ": "
-                   << message;
-        cb(V1_2::utils::convert(code).value(), {});
-    } else {
-        cb(V1_0::ErrorStatus::NONE, result.value());
-    }
-    return Void();
-}
-
-Return<void> Device::getSupportedOperations_1_3(const V1_3::Model& model,
-                                                getSupportedOperations_1_3_cb cb) {
-    const auto result = adapter::getSupportedOperations(kDevice, model);
-    if (!result.has_value()) {
-        const auto& [message, code] = result.error();
-        LOG(ERROR) << "adapter::Device::getSupportedOperations_1_3 failed with " << code << ": "
-                   << message;
-        cb(V1_3::utils::convert(code).value(), {});
-    } else {
-        cb(V1_3::ErrorStatus::NONE, result.value());
-    }
-    return Void();
-}
-
-Return<void> Device::getNumberOfCacheFilesNeeded(getNumberOfCacheFilesNeeded_cb cb) {
-    const auto [numModelCache, numDataCache] = kDevice->getNumberOfCacheFilesNeeded();
-    cb(V1_0::ErrorStatus::NONE, numModelCache, numDataCache);
-    return Void();
-}
-
-Return<V1_0::ErrorStatus> Device::prepareModel(const V1_0::Model& model,
-                                               const sp<V1_0::IPreparedModelCallback>& callback) {
-    auto result = adapter::prepareModel(kDevice, kExecutor, model, callback);
-    if (!result.has_value()) {
-        auto [message, code] = std::move(result).error();
-        LOG(ERROR) << "adapter::Device::prepareModel failed with " << code << ": " << message;
-        notify(callback.get(), code, nullptr);
-        return V1_0::utils::convert(code).value();
-    }
-    return V1_0::ErrorStatus::NONE;
-}
-
-Return<V1_0::ErrorStatus> Device::prepareModel_1_1(
-        const V1_1::Model& model, V1_1::ExecutionPreference preference,
-        const sp<V1_0::IPreparedModelCallback>& callback) {
-    auto result = adapter::prepareModel_1_1(kDevice, kExecutor, model, preference, callback);
-    if (!result.has_value()) {
-        auto [message, code] = std::move(result).error();
-        LOG(ERROR) << "adapter::Device::prepareModel_1_1 failed with " << code << ": " << message;
-        notify(callback.get(), code, nullptr);
-        return V1_1::utils::convert(code).value();
-    }
-    return V1_0::ErrorStatus::NONE;
-}
-
-Return<V1_0::ErrorStatus> Device::prepareModel_1_2(
-        const V1_2::Model& model, V1_1::ExecutionPreference preference,
-        const hidl_vec<hidl_handle>& modelCache, const hidl_vec<hidl_handle>& dataCache,
-        const CacheToken& token, const sp<V1_2::IPreparedModelCallback>& callback) {
-    auto result = adapter::prepareModel_1_2(kDevice, kExecutor, model, preference, modelCache,
-                                            dataCache, token, callback);
-    if (!result.has_value()) {
-        auto [message, code] = std::move(result).error();
-        LOG(ERROR) << "adapter::Device::prepareModel_1_2 failed with " << code << ": " << message;
-        notify(callback.get(), code, nullptr);
-        return V1_2::utils::convert(code).value();
-    }
-    return V1_0::ErrorStatus::NONE;
-}
-
-Return<V1_3::ErrorStatus> Device::prepareModel_1_3(
-        const V1_3::Model& model, V1_1::ExecutionPreference preference, V1_3::Priority priority,
-        const V1_3::OptionalTimePoint& deadline, const hidl_vec<hidl_handle>& modelCache,
-        const hidl_vec<hidl_handle>& dataCache, const CacheToken& token,
-        const sp<V1_3::IPreparedModelCallback>& callback) {
-    auto result = adapter::prepareModel_1_3(kDevice, kExecutor, model, preference, priority,
-                                            deadline, modelCache, dataCache, token, callback);
-    if (!result.has_value()) {
-        auto [message, code] = std::move(result).error();
-        LOG(ERROR) << "adapter::Device::prepareModel_1_3 failed with " << code << ": " << message;
-        notify(callback.get(), code, nullptr);
-        return V1_3::utils::convert(code).value();
-    }
-    return V1_3::ErrorStatus::NONE;
-}
-
-Return<V1_0::ErrorStatus> Device::prepareModelFromCache(
-        const hidl_vec<hidl_handle>& modelCache, const hidl_vec<hidl_handle>& dataCache,
-        const CacheToken& token, const sp<V1_2::IPreparedModelCallback>& callback) {
-    auto result = adapter::prepareModelFromCache(kDevice, kExecutor, modelCache, dataCache, token,
-                                                 callback);
-    if (!result.has_value()) {
-        auto [message, code] = std::move(result).error();
-        LOG(ERROR) << "adapter::Device::prepareModelFromCache failed with " << code << ": "
-                   << message;
-        notify(callback.get(), code, nullptr);
-        return V1_2::utils::convert(code).value();
-    }
-    return V1_0::ErrorStatus::NONE;
-}
-
-Return<V1_3::ErrorStatus> Device::prepareModelFromCache_1_3(
-        const V1_3::OptionalTimePoint& deadline, const hidl_vec<hidl_handle>& modelCache,
-        const hidl_vec<hidl_handle>& dataCache, const CacheToken& token,
-        const sp<V1_3::IPreparedModelCallback>& callback) {
-    auto result = adapter::prepareModelFromCache_1_3(kDevice, kExecutor, deadline, modelCache,
-                                                     dataCache, token, callback);
-    if (!result.has_value()) {
-        auto [message, code] = std::move(result).error();
-        LOG(ERROR) << "adapter::Device::prepareModelFromCache_1_3 failed with " << code << ": "
-                   << message;
-        notify(callback.get(), code, nullptr);
-        return V1_3::utils::convert(code).value();
-    }
-    return V1_3::ErrorStatus::NONE;
-}
-
-Return<V1_0::DeviceStatus> Device::getStatus() {
-    return V1_0::DeviceStatus::AVAILABLE;
-}
-
-Return<void> Device::allocate(const V1_3::BufferDesc& desc,
-                              const hidl_vec<sp<V1_3::IPreparedModel>>& preparedModels,
-                              const hidl_vec<V1_3::BufferRole>& inputRoles,
-                              const hidl_vec<V1_3::BufferRole>& outputRoles, allocate_cb cb) {
-    auto result = adapter::allocate(kDevice, desc, preparedModels, inputRoles, outputRoles);
-    if (!result.has_value()) {
-        const auto [message, code] = std::move(result).error();
-        LOG(ERROR) << "adapter::Device::allocate failed with " << code << ": " << message;
-        cb(V1_3::utils::convert(code).value(), nullptr, /*token=*/0);
-        return Void();
-    }
-    auto [buffer, token] = std::move(result).value();
-    cb(V1_3::ErrorStatus::NONE, buffer, token);
-    return Void();
-}
-
-}  // namespace android::hardware::neuralnetworks::adapter
diff --git a/neuralnetworks/utils/adapter/src/PreparedModel.cpp b/neuralnetworks/utils/adapter/src/PreparedModel.cpp
deleted file mode 100644
index a14e782..0000000
--- a/neuralnetworks/utils/adapter/src/PreparedModel.cpp
+++ /dev/null
@@ -1,436 +0,0 @@
-/*
- * Copyright (C) 2020 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "PreparedModel.h"
-
-#include "Burst.h"
-
-#include <android-base/logging.h>
-#include <android/hardware/neuralnetworks/1.0/IExecutionCallback.h>
-#include <android/hardware/neuralnetworks/1.0/types.h>
-#include <android/hardware/neuralnetworks/1.2/IBurstCallback.h>
-#include <android/hardware/neuralnetworks/1.2/IExecutionCallback.h>
-#include <android/hardware/neuralnetworks/1.2/types.h>
-#include <android/hardware/neuralnetworks/1.3/IExecutionCallback.h>
-#include <android/hardware/neuralnetworks/1.3/IFencedExecutionCallback.h>
-#include <android/hardware/neuralnetworks/1.3/IPreparedModel.h>
-#include <android/hardware/neuralnetworks/1.3/types.h>
-#include <hwbinder/IPCThreadState.h>
-#include <nnapi/IPreparedModel.h>
-#include <nnapi/TypeUtils.h>
-#include <nnapi/Types.h>
-#include <nnapi/Validation.h>
-#include <nnapi/hal/1.0/Utils.h>
-#include <nnapi/hal/1.2/Utils.h>
-#include <nnapi/hal/1.3/Conversions.h>
-#include <nnapi/hal/1.3/Utils.h>
-#include <sys/types.h>
-
-#include <memory>
-#include <thread>
-
-// See hardware/interfaces/neuralnetworks/utils/README.md for more information on HIDL interface
-// lifetimes across processes and for protecting asynchronous calls across HIDL.
-
-namespace android::hardware::neuralnetworks::adapter {
-namespace {
-
-template <typename Type>
-auto convertInput(const Type& object) -> decltype(nn::convert(std::declval<Type>())) {
-    auto result = nn::convert(object);
-    if (!result.has_value()) {
-        result.error().code = nn::ErrorStatus::INVALID_ARGUMENT;
-    }
-    return result;
-}
-
-nn::GeneralResult<nn::Version> validateRequestForModel(const nn::Request& request,
-                                                       const nn::Model& model) {
-    nn::GeneralResult<nn::Version> version = nn::validateRequestForModel(request, model);
-    if (!version.ok()) {
-        version.error().code = nn::ErrorStatus::INVALID_ARGUMENT;
-    }
-    return version;
-}
-
-class FencedExecutionCallback final : public V1_3::IFencedExecutionCallback {
-  public:
-    explicit FencedExecutionCallback(const nn::ExecuteFencedInfoCallback& callback)
-        : kCallback(callback) {
-        CHECK(callback != nullptr);
-    }
-
-    Return<void> getExecutionInfo(getExecutionInfo_cb cb) override {
-        const auto result = kCallback();
-        if (!result.has_value()) {
-            const auto& [message, code] = result.error();
-            const auto status =
-                    V1_3::utils::convert(code).value_or(V1_3::ErrorStatus::GENERAL_FAILURE);
-            LOG(ERROR) << message;
-            cb(status, V1_2::utils::kNoTiming, V1_2::utils::kNoTiming);
-            return Void();
-        }
-        const auto [timingLaunched, timingFenced] = result.value();
-        const auto hidlTimingLaunched = V1_3::utils::convert(timingLaunched).value();
-        const auto hidlTimingFenced = V1_3::utils::convert(timingFenced).value();
-        cb(V1_3::ErrorStatus::NONE, hidlTimingLaunched, hidlTimingFenced);
-        return Void();
-    }
-
-  private:
-    const nn::ExecuteFencedInfoCallback kCallback;
-};
-
-using ExecutionResult = nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>>;
-
-void notify(V1_0::IExecutionCallback* callback, nn::ErrorStatus status,
-            const std::vector<nn::OutputShape>& /*outputShapes*/, const nn::Timing& /*timing*/) {
-    if (callback != nullptr) {
-        const auto hidlStatus = V1_0::utils::convert(status).value();
-        const auto ret = callback->notify(hidlStatus);
-        if (!ret.isOk()) {
-            LOG(ERROR) << "V1_0::IExecutionCallback::notify failed with " << ret.description();
-        }
-    }
-}
-
-void notify(V1_2::IExecutionCallback* callback, nn::ErrorStatus status,
-            const std::vector<nn::OutputShape>& outputShapes, const nn::Timing& timing) {
-    if (callback != nullptr) {
-        const auto hidlStatus = V1_2::utils::convert(status).value();
-        const auto hidlOutputShapes = V1_2::utils::convert(outputShapes).value();
-        const auto hidlTiming = V1_2::utils::convert(timing).value();
-        const auto ret = callback->notify_1_2(hidlStatus, hidlOutputShapes, hidlTiming);
-        if (!ret.isOk()) {
-            LOG(ERROR) << "V1_2::IExecutionCallback::notify_1_2 failed with " << ret.description();
-        }
-    }
-}
-
-void notify(V1_3::IExecutionCallback* callback, nn::ErrorStatus status,
-            const std::vector<nn::OutputShape>& outputShapes, const nn::Timing& timing) {
-    if (callback != nullptr) {
-        const auto hidlStatus = V1_3::utils::convert(status).value();
-        const auto hidlOutputShapes = V1_3::utils::convert(outputShapes).value();
-        const auto hidlTiming = V1_3::utils::convert(timing).value();
-        const auto ret = callback->notify_1_3(hidlStatus, hidlOutputShapes, hidlTiming);
-        if (!ret.isOk()) {
-            LOG(ERROR) << "V1_3::IExecutionCallback::notify_1_3 failed with " << ret.description();
-        }
-    }
-}
-
-template <typename CallbackType>
-void notify(CallbackType* callback, ExecutionResult result) {
-    if (!result.has_value()) {
-        const auto [message, status, outputShapes] = std::move(result).error();
-        LOG(ERROR) << message;
-        notify(callback, status, outputShapes, {});
-    } else {
-        const auto [outputShapes, timing] = std::move(result).value();
-        notify(callback, nn::ErrorStatus::NONE, outputShapes, timing);
-    }
-}
-
-nn::GeneralResult<void> execute(const nn::SharedPreparedModel& preparedModel, uid_t userId,
-                                const Executor& executor, const V1_0::Request& request,
-                                const sp<V1_0::IExecutionCallback>& callback) {
-    if (callback.get() == nullptr) {
-        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Invalid callback";
-    }
-
-    auto nnRequest = NN_TRY(convertInput(request));
-
-    const std::any resource = preparedModel->getUnderlyingResource();
-    if (const auto* model = std::any_cast<const nn::Model*>(&resource)) {
-        CHECK(*model != nullptr);
-        NN_TRY(adapter::validateRequestForModel(nnRequest, **model));
-    }
-
-    Task task = [preparedModel, nnRequest = std::move(nnRequest), callback] {
-        auto result = preparedModel->execute(nnRequest, nn::MeasureTiming::NO, {}, {});
-        notify(callback.get(), std::move(result));
-    };
-    executor(std::move(task), userId, {});
-
-    return {};
-}
-
-nn::GeneralResult<void> execute_1_2(const nn::SharedPreparedModel& preparedModel, uid_t userId,
-                                    const Executor& executor, const V1_0::Request& request,
-                                    V1_2::MeasureTiming measure,
-                                    const sp<V1_2::IExecutionCallback>& callback) {
-    if (callback.get() == nullptr) {
-        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Invalid callback";
-    }
-
-    auto nnRequest = NN_TRY(convertInput(request));
-    const auto nnMeasure = NN_TRY(convertInput(measure));
-
-    const std::any resource = preparedModel->getUnderlyingResource();
-    if (const auto* model = std::any_cast<const nn::Model*>(&resource)) {
-        CHECK(*model != nullptr);
-        NN_TRY(adapter::validateRequestForModel(nnRequest, **model));
-    }
-
-    Task task = [preparedModel, nnRequest = std::move(nnRequest), nnMeasure, callback] {
-        auto result = preparedModel->execute(nnRequest, nnMeasure, {}, {});
-        notify(callback.get(), std::move(result));
-    };
-    executor(std::move(task), userId, {});
-
-    return {};
-}
-
-nn::GeneralResult<void> execute_1_3(const nn::SharedPreparedModel& preparedModel, uid_t userId,
-                                    const Executor& executor, const V1_3::Request& request,
-                                    V1_2::MeasureTiming measure,
-                                    const V1_3::OptionalTimePoint& deadline,
-                                    const V1_3::OptionalTimeoutDuration& loopTimeoutDuration,
-                                    const sp<V1_3::IExecutionCallback>& callback) {
-    if (callback.get() == nullptr) {
-        return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT) << "Invalid callback";
-    }
-
-    auto nnRequest = NN_TRY(convertInput(request));
-    const auto nnMeasure = NN_TRY(convertInput(measure));
-    const auto nnDeadline = NN_TRY(convertInput(deadline));
-    const auto nnLoopTimeoutDuration = NN_TRY(convertInput(loopTimeoutDuration));
-
-    const std::any resource = preparedModel->getUnderlyingResource();
-    if (const auto* model = std::any_cast<const nn::Model*>(&resource)) {
-        CHECK(*model != nullptr);
-        NN_TRY(adapter::validateRequestForModel(nnRequest, **model));
-    }
-
-    Task task = [preparedModel, nnRequest = std::move(nnRequest), nnMeasure, nnDeadline,
-                 nnLoopTimeoutDuration, callback] {
-        auto result =
-                preparedModel->execute(nnRequest, nnMeasure, nnDeadline, nnLoopTimeoutDuration);
-        notify(callback.get(), std::move(result));
-    };
-    executor(std::move(task), userId, nnDeadline);
-
-    return {};
-}
-
-nn::ExecutionResult<std::pair<hidl_vec<V1_2::OutputShape>, V1_2::Timing>> executeSynchronously(
-        const nn::SharedPreparedModel& preparedModel, const V1_0::Request& request,
-        V1_2::MeasureTiming measure) {
-    const auto nnRequest = NN_TRY(convertInput(request));
-    const auto nnMeasure = NN_TRY(convertInput(measure));
-
-    const auto [outputShapes, timing] =
-            NN_TRY(preparedModel->execute(nnRequest, nnMeasure, {}, {}));
-
-    auto hidlOutputShapes = NN_TRY(V1_2::utils::convert(outputShapes));
-    const auto hidlTiming = NN_TRY(V1_2::utils::convert(timing));
-    return std::make_pair(std::move(hidlOutputShapes), hidlTiming);
-}
-
-nn::ExecutionResult<std::pair<hidl_vec<V1_2::OutputShape>, V1_2::Timing>> executeSynchronously_1_3(
-        const nn::SharedPreparedModel& preparedModel, const V1_3::Request& request,
-        V1_2::MeasureTiming measure, const V1_3::OptionalTimePoint& deadline,
-        const V1_3::OptionalTimeoutDuration& loopTimeoutDuration) {
-    const auto nnRequest = NN_TRY(convertInput(request));
-    const auto nnMeasure = NN_TRY(convertInput(measure));
-    const auto nnDeadline = NN_TRY(convertInput(deadline));
-    const auto nnLoopTimeoutDuration = NN_TRY(convertInput(loopTimeoutDuration));
-
-    const auto [outputShapes, timing] =
-            NN_TRY(preparedModel->execute(nnRequest, nnMeasure, nnDeadline, nnLoopTimeoutDuration));
-
-    auto hidlOutputShapes = NN_TRY(V1_3::utils::convert(outputShapes));
-    const auto hidlTiming = NN_TRY(V1_3::utils::convert(timing));
-    return std::make_pair(std::move(hidlOutputShapes), hidlTiming);
-}
-
-nn::GeneralResult<std::vector<nn::SyncFence>> convertSyncFences(
-        const hidl_vec<hidl_handle>& handles) {
-    auto nnHandles = NN_TRY(convertInput(handles));
-    std::vector<nn::SyncFence> syncFences;
-    syncFences.reserve(handles.size());
-    for (auto&& handle : nnHandles) {
-        if (auto syncFence = nn::SyncFence::create(std::move(handle)); !syncFence.ok()) {
-            return nn::error(nn::ErrorStatus::INVALID_ARGUMENT) << std::move(syncFence).error();
-        } else {
-            syncFences.push_back(std::move(syncFence).value());
-        }
-    }
-    return syncFences;
-}
-
-nn::GeneralResult<sp<V1_2::IBurstContext>> configureExecutionBurst(
-        const nn::SharedPreparedModel& preparedModel, const sp<V1_2::IBurstCallback>& callback,
-        const MQDescriptorSync<V1_2::FmqRequestDatum>& requestChannel,
-        const MQDescriptorSync<V1_2::FmqResultDatum>& resultChannel) {
-    auto burstExecutor = NN_TRY(preparedModel->configureExecutionBurst());
-    return Burst::create(callback, requestChannel, resultChannel, std::move(burstExecutor),
-                         V1_2::utils::getBurstServerPollingTimeWindow());
-}
-
-nn::GeneralResult<std::pair<hidl_handle, sp<V1_3::IFencedExecutionCallback>>> executeFenced(
-        const nn::SharedPreparedModel& preparedModel, const V1_3::Request& request,
-        const hidl_vec<hidl_handle>& waitFor, V1_2::MeasureTiming measure,
-        const V1_3::OptionalTimePoint& deadline,
-        const V1_3::OptionalTimeoutDuration& loopTimeoutDuration,
-        const V1_3::OptionalTimeoutDuration& duration) {
-    const auto nnRequest = NN_TRY(convertInput(request));
-    const auto nnWaitFor = NN_TRY(convertSyncFences(waitFor));
-    const auto nnMeasure = NN_TRY(convertInput(measure));
-    const auto nnDeadline = NN_TRY(convertInput(deadline));
-    const auto nnLoopTimeoutDuration = NN_TRY(convertInput(loopTimeoutDuration));
-    const auto nnDuration = NN_TRY(convertInput(duration));
-
-    auto [syncFence, executeFencedCallback] = NN_TRY(preparedModel->executeFenced(
-            nnRequest, nnWaitFor, nnMeasure, nnDeadline, nnLoopTimeoutDuration, nnDuration));
-
-    auto hidlSyncFence = NN_TRY(V1_3::utils::convert(syncFence.getSharedHandle()));
-    auto hidlExecuteFencedCallback = sp<FencedExecutionCallback>::make(executeFencedCallback);
-    return std::make_pair(std::move(hidlSyncFence), std::move(hidlExecuteFencedCallback));
-}
-
-}  // namespace
-
-PreparedModel::PreparedModel(nn::SharedPreparedModel preparedModel, Executor executor, uid_t userId)
-    : kPreparedModel(std::move(preparedModel)), kExecutor(std::move(executor)), kUserId(userId) {
-    CHECK(kPreparedModel != nullptr);
-    CHECK(kExecutor != nullptr);
-}
-
-nn::SharedPreparedModel PreparedModel::getUnderlyingPreparedModel() const {
-    return kPreparedModel;
-}
-
-Return<V1_0::ErrorStatus> PreparedModel::execute(const V1_0::Request& request,
-                                                 const sp<V1_0::IExecutionCallback>& callback) {
-    auto result = adapter::execute(kPreparedModel, kUserId, kExecutor, request, callback);
-    if (!result.has_value()) {
-        auto [message, code] = std::move(result).error();
-        LOG(ERROR) << "adapter::PreparedModel::execute failed with " << code << ": " << message;
-        notify(callback.get(), code, {}, {});
-        return V1_0::utils::convert(code).value();
-    }
-    return V1_0::ErrorStatus::NONE;
-}
-
-Return<V1_0::ErrorStatus> PreparedModel::execute_1_2(const V1_0::Request& request,
-                                                     V1_2::MeasureTiming measure,
-                                                     const sp<V1_2::IExecutionCallback>& callback) {
-    auto result =
-            adapter::execute_1_2(kPreparedModel, kUserId, kExecutor, request, measure, callback);
-    if (!result.has_value()) {
-        auto [message, code] = std::move(result).error();
-        LOG(ERROR) << "adapter::PreparedModel::execute_1_2 failed with " << code << ": " << message;
-        notify(callback.get(), code, {}, {});
-        return V1_2::utils::convert(code).value();
-    }
-    return V1_0::ErrorStatus::NONE;
-}
-
-Return<V1_3::ErrorStatus> PreparedModel::execute_1_3(
-        const V1_3::Request& request, V1_2::MeasureTiming measure,
-        const V1_3::OptionalTimePoint& deadline,
-        const V1_3::OptionalTimeoutDuration& loopTimeoutDuration,
-        const sp<V1_3::IExecutionCallback>& callback) {
-    auto result = adapter::execute_1_3(kPreparedModel, kUserId, kExecutor, request, measure,
-                                       deadline, loopTimeoutDuration, callback);
-    if (!result.has_value()) {
-        auto [message, code] = std::move(result).error();
-        LOG(ERROR) << "adapter::PreparedModel::execute_1_3 failed with " << code << ": " << message;
-        notify(callback.get(), code, {}, {});
-        return V1_3::utils::convert(code).value();
-    }
-    return V1_3::ErrorStatus::NONE;
-}
-
-Return<void> PreparedModel::executeSynchronously(const V1_0::Request& request,
-                                                 V1_2::MeasureTiming measure,
-                                                 executeSynchronously_cb cb) {
-    auto result = adapter::executeSynchronously(kPreparedModel, request, measure);
-    if (!result.has_value()) {
-        auto [message, code, outputShapes] = std::move(result).error();
-        LOG(ERROR) << "adapter::PreparedModel::executeSynchronously failed with " << code << ": "
-                   << message;
-        cb(V1_2::utils::convert(code).value(), V1_2::utils::convert(outputShapes).value(),
-           V1_2::utils::kNoTiming);
-        return Void();
-    }
-    auto [outputShapes, timing] = std::move(result).value();
-    cb(V1_0::ErrorStatus::NONE, outputShapes, timing);
-    return Void();
-}
-
-Return<void> PreparedModel::executeSynchronously_1_3(
-        const V1_3::Request& request, V1_2::MeasureTiming measure,
-        const V1_3::OptionalTimePoint& deadline,
-        const V1_3::OptionalTimeoutDuration& loopTimeoutDuration, executeSynchronously_1_3_cb cb) {
-    auto result = adapter::executeSynchronously_1_3(kPreparedModel, request, measure, deadline,
-                                                    loopTimeoutDuration);
-    if (!result.has_value()) {
-        auto [message, code, outputShapes] = std::move(result).error();
-        LOG(ERROR) << "adapter::PreparedModel::executeSynchronously_1_3 failed with " << code
-                   << ": " << message;
-        cb(V1_3::utils::convert(code).value(), V1_3::utils::convert(outputShapes).value(),
-           V1_2::utils::kNoTiming);
-        return Void();
-    }
-    auto [outputShapes, timing] = std::move(result).value();
-    cb(V1_3::ErrorStatus::NONE, outputShapes, timing);
-    return Void();
-}
-
-Return<void> PreparedModel::configureExecutionBurst(
-        const sp<V1_2::IBurstCallback>& callback,
-        const MQDescriptorSync<V1_2::FmqRequestDatum>& requestChannel,
-        const MQDescriptorSync<V1_2::FmqResultDatum>& resultChannel,
-        configureExecutionBurst_cb cb) {
-    auto result = adapter::configureExecutionBurst(kPreparedModel, callback, requestChannel,
-                                                   resultChannel);
-    if (!result.has_value()) {
-        auto [message, code] = std::move(result).error();
-        LOG(ERROR) << "adapter::PreparedModel::configureExecutionBurst failed with " << code << ": "
-                   << message;
-        cb(V1_2::utils::convert(code).value(), nullptr);
-        return Void();
-    }
-    auto burstContext = std::move(result).value();
-    cb(V1_0::ErrorStatus::NONE, std::move(burstContext));
-    return Void();
-}
-
-Return<void> PreparedModel::executeFenced(const V1_3::Request& request,
-                                          const hidl_vec<hidl_handle>& waitFor,
-                                          V1_2::MeasureTiming measure,
-                                          const V1_3::OptionalTimePoint& deadline,
-                                          const V1_3::OptionalTimeoutDuration& loopTimeoutDuration,
-                                          const V1_3::OptionalTimeoutDuration& duration,
-                                          executeFenced_cb callback) {
-    auto result = adapter::executeFenced(kPreparedModel, request, waitFor, measure, deadline,
-                                         loopTimeoutDuration, duration);
-    if (!result.has_value()) {
-        auto [message, code] = std::move(result).error();
-        LOG(ERROR) << "adapter::PreparedModel::executeFenced failed with " << code << ": "
-                   << message;
-        callback(V1_3::utils::convert(code).value(), {}, nullptr);
-        return Void();
-    }
-    auto [syncFence, executeFencedCallback] = std::move(result).value();
-    callback(V1_3::ErrorStatus::NONE, syncFence, executeFencedCallback);
-    return Void();
-}
-
-}  // namespace android::hardware::neuralnetworks::adapter
diff --git a/neuralnetworks/utils/common/include/nnapi/hal/InvalidBurst.h b/neuralnetworks/utils/common/include/nnapi/hal/InvalidBurst.h
index e86edda..1f1245f 100644
--- a/neuralnetworks/utils/common/include/nnapi/hal/InvalidBurst.h
+++ b/neuralnetworks/utils/common/include/nnapi/hal/InvalidBurst.h
@@ -33,12 +33,15 @@
 
     nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> execute(
             const nn::Request& request, nn::MeasureTiming measure,
-            const nn::OptionalTimePoint& deadline,
-            const nn::OptionalDuration& loopTimeoutDuration) const override;
+            const nn::OptionalTimePoint& deadline, const nn::OptionalDuration& loopTimeoutDuration,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     nn::GeneralResult<nn::SharedExecution> createReusableExecution(
             const nn::Request& request, nn::MeasureTiming measure,
-            const nn::OptionalDuration& loopTimeoutDuration) const override;
+            const nn::OptionalDuration& loopTimeoutDuration,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 };
 
 }  // namespace android::hardware::neuralnetworks::utils
diff --git a/neuralnetworks/utils/common/include/nnapi/hal/InvalidDevice.h b/neuralnetworks/utils/common/include/nnapi/hal/InvalidDevice.h
index 5e62b9a..9582873 100644
--- a/neuralnetworks/utils/common/include/nnapi/hal/InvalidDevice.h
+++ b/neuralnetworks/utils/common/include/nnapi/hal/InvalidDevice.h
@@ -52,8 +52,9 @@
     nn::GeneralResult<nn::SharedPreparedModel> prepareModel(
             const nn::Model& model, nn::ExecutionPreference preference, nn::Priority priority,
             nn::OptionalTimePoint deadline, const std::vector<nn::SharedHandle>& modelCache,
-            const std::vector<nn::SharedHandle>& dataCache,
-            const nn::CacheToken& token) const override;
+            const std::vector<nn::SharedHandle>& dataCache, const nn::CacheToken& token,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     nn::GeneralResult<nn::SharedPreparedModel> prepareModelFromCache(
             nn::OptionalTimePoint deadline, const std::vector<nn::SharedHandle>& modelCache,
diff --git a/neuralnetworks/utils/common/include/nnapi/hal/InvalidPreparedModel.h b/neuralnetworks/utils/common/include/nnapi/hal/InvalidPreparedModel.h
index de30aae..3f1f290 100644
--- a/neuralnetworks/utils/common/include/nnapi/hal/InvalidPreparedModel.h
+++ b/neuralnetworks/utils/common/include/nnapi/hal/InvalidPreparedModel.h
@@ -31,18 +31,23 @@
   public:
     nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> execute(
             const nn::Request& request, nn::MeasureTiming measure,
-            const nn::OptionalTimePoint& deadline,
-            const nn::OptionalDuration& loopTimeoutDuration) const override;
+            const nn::OptionalTimePoint& deadline, const nn::OptionalDuration& loopTimeoutDuration,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     nn::GeneralResult<std::pair<nn::SyncFence, nn::ExecuteFencedInfoCallback>> executeFenced(
             const nn::Request& request, const std::vector<nn::SyncFence>& waitFor,
             nn::MeasureTiming measure, const nn::OptionalTimePoint& deadline,
             const nn::OptionalDuration& loopTimeoutDuration,
-            const nn::OptionalDuration& timeoutDurationAfterFence) const override;
+            const nn::OptionalDuration& timeoutDurationAfterFence,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     nn::GeneralResult<nn::SharedExecution> createReusableExecution(
             const nn::Request& request, nn::MeasureTiming measure,
-            const nn::OptionalDuration& loopTimeoutDuration) const override;
+            const nn::OptionalDuration& loopTimeoutDuration,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     nn::GeneralResult<nn::SharedBurst> configureExecutionBurst() const override;
 
diff --git a/neuralnetworks/utils/common/include/nnapi/hal/ResilientBurst.h b/neuralnetworks/utils/common/include/nnapi/hal/ResilientBurst.h
index fde2486..129431f 100644
--- a/neuralnetworks/utils/common/include/nnapi/hal/ResilientBurst.h
+++ b/neuralnetworks/utils/common/include/nnapi/hal/ResilientBurst.h
@@ -48,18 +48,23 @@
 
     nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> execute(
             const nn::Request& request, nn::MeasureTiming measure,
-            const nn::OptionalTimePoint& deadline,
-            const nn::OptionalDuration& loopTimeoutDuration) const override;
+            const nn::OptionalTimePoint& deadline, const nn::OptionalDuration& loopTimeoutDuration,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     nn::GeneralResult<nn::SharedExecution> createReusableExecution(
             const nn::Request& request, nn::MeasureTiming measure,
-            const nn::OptionalDuration& loopTimeoutDuration) const override;
+            const nn::OptionalDuration& loopTimeoutDuration,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
   private:
     bool isValidInternal() const EXCLUDES(mMutex);
     nn::GeneralResult<nn::SharedExecution> createReusableExecutionInternal(
             const nn::Request& request, nn::MeasureTiming measure,
-            const nn::OptionalDuration& loopTimeoutDuration) const;
+            const nn::OptionalDuration& loopTimeoutDuration,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const;
 
     const Factory kMakeBurst;
     mutable std::mutex mMutex;
diff --git a/neuralnetworks/utils/common/include/nnapi/hal/ResilientDevice.h b/neuralnetworks/utils/common/include/nnapi/hal/ResilientDevice.h
index 84ae799..267d634 100644
--- a/neuralnetworks/utils/common/include/nnapi/hal/ResilientDevice.h
+++ b/neuralnetworks/utils/common/include/nnapi/hal/ResilientDevice.h
@@ -65,8 +65,9 @@
     nn::GeneralResult<nn::SharedPreparedModel> prepareModel(
             const nn::Model& model, nn::ExecutionPreference preference, nn::Priority priority,
             nn::OptionalTimePoint deadline, const std::vector<nn::SharedHandle>& modelCache,
-            const std::vector<nn::SharedHandle>& dataCache,
-            const nn::CacheToken& token) const override;
+            const std::vector<nn::SharedHandle>& dataCache, const nn::CacheToken& token,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     nn::GeneralResult<nn::SharedPreparedModel> prepareModelFromCache(
             nn::OptionalTimePoint deadline, const std::vector<nn::SharedHandle>& modelCache,
@@ -83,7 +84,9 @@
     nn::GeneralResult<nn::SharedPreparedModel> prepareModelInternal(
             const nn::Model& model, nn::ExecutionPreference preference, nn::Priority priority,
             nn::OptionalTimePoint deadline, const std::vector<nn::SharedHandle>& modelCache,
-            const std::vector<nn::SharedHandle>& dataCache, const nn::CacheToken& token) const;
+            const std::vector<nn::SharedHandle>& dataCache, const nn::CacheToken& token,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const;
     nn::GeneralResult<nn::SharedPreparedModel> prepareModelFromCacheInternal(
             nn::OptionalTimePoint deadline, const std::vector<nn::SharedHandle>& modelCache,
             const std::vector<nn::SharedHandle>& dataCache, const nn::CacheToken& token) const;
diff --git a/neuralnetworks/utils/common/include/nnapi/hal/ResilientPreparedModel.h b/neuralnetworks/utils/common/include/nnapi/hal/ResilientPreparedModel.h
index 86533ed..bbfc220 100644
--- a/neuralnetworks/utils/common/include/nnapi/hal/ResilientPreparedModel.h
+++ b/neuralnetworks/utils/common/include/nnapi/hal/ResilientPreparedModel.h
@@ -49,18 +49,23 @@
 
     nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> execute(
             const nn::Request& request, nn::MeasureTiming measure,
-            const nn::OptionalTimePoint& deadline,
-            const nn::OptionalDuration& loopTimeoutDuration) const override;
+            const nn::OptionalTimePoint& deadline, const nn::OptionalDuration& loopTimeoutDuration,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     nn::GeneralResult<std::pair<nn::SyncFence, nn::ExecuteFencedInfoCallback>> executeFenced(
             const nn::Request& request, const std::vector<nn::SyncFence>& waitFor,
             nn::MeasureTiming measure, const nn::OptionalTimePoint& deadline,
             const nn::OptionalDuration& loopTimeoutDuration,
-            const nn::OptionalDuration& timeoutDurationAfterFence) const override;
+            const nn::OptionalDuration& timeoutDurationAfterFence,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     nn::GeneralResult<nn::SharedExecution> createReusableExecution(
             const nn::Request& request, nn::MeasureTiming measure,
-            const nn::OptionalDuration& loopTimeoutDuration) const override;
+            const nn::OptionalDuration& loopTimeoutDuration,
+            const std::vector<nn::TokenValuePair>& hints,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const override;
 
     nn::GeneralResult<nn::SharedBurst> configureExecutionBurst() const override;
 
@@ -70,7 +75,9 @@
     bool isValidInternal() const EXCLUDES(mMutex);
     nn::GeneralResult<nn::SharedExecution> createReusableExecutionInternal(
             const nn::Request& request, nn::MeasureTiming measure,
-            const nn::OptionalDuration& loopTimeoutDuration) const;
+            const nn::OptionalDuration& loopTimeoutDuration,
+            const std::vector<nn::TokenValuePair>& metaData,
+            const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const;
     nn::GeneralResult<nn::SharedBurst> configureExecutionBurstInternal() const;
 
     const Factory kMakePreparedModel;
diff --git a/neuralnetworks/utils/common/src/InvalidBurst.cpp b/neuralnetworks/utils/common/src/InvalidBurst.cpp
index 0191533..3fdfb5c 100644
--- a/neuralnetworks/utils/common/src/InvalidBurst.cpp
+++ b/neuralnetworks/utils/common/src/InvalidBurst.cpp
@@ -34,13 +34,17 @@
 nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> InvalidBurst::execute(
         const nn::Request& /*request*/, nn::MeasureTiming /*measure*/,
         const nn::OptionalTimePoint& /*deadline*/,
-        const nn::OptionalDuration& /*loopTimeoutDuration*/) const {
+        const nn::OptionalDuration& /*loopTimeoutDuration*/,
+        const std::vector<nn::TokenValuePair>& /*hints*/,
+        const std::vector<nn::ExtensionNameAndPrefix>& /*extensionNameToPrefix*/) const {
     return NN_ERROR() << "InvalidBurst";
 }
 
 nn::GeneralResult<nn::SharedExecution> InvalidBurst::createReusableExecution(
         const nn::Request& /*request*/, nn::MeasureTiming /*measure*/,
-        const nn::OptionalDuration& /*loopTimeoutDuration*/) const {
+        const nn::OptionalDuration& /*loopTimeoutDuration*/,
+        const std::vector<nn::TokenValuePair>& /*hints*/,
+        const std::vector<nn::ExtensionNameAndPrefix>& /*extensionNameToPrefix*/) const {
     return NN_ERROR() << "InvalidBurst";
 }
 
diff --git a/neuralnetworks/utils/common/src/InvalidDevice.cpp b/neuralnetworks/utils/common/src/InvalidDevice.cpp
index 535ccb4..c8cc287 100644
--- a/neuralnetworks/utils/common/src/InvalidDevice.cpp
+++ b/neuralnetworks/utils/common/src/InvalidDevice.cpp
@@ -84,7 +84,9 @@
         const nn::Model& /*model*/, nn::ExecutionPreference /*preference*/,
         nn::Priority /*priority*/, nn::OptionalTimePoint /*deadline*/,
         const std::vector<nn::SharedHandle>& /*modelCache*/,
-        const std::vector<nn::SharedHandle>& /*dataCache*/, const nn::CacheToken& /*token*/) const {
+        const std::vector<nn::SharedHandle>& /*dataCache*/, const nn::CacheToken& /*token*/,
+        const std::vector<nn::TokenValuePair>& /*hints*/,
+        const std::vector<nn::ExtensionNameAndPrefix>& /*extensionNameToPrefix*/) const {
     return NN_ERROR() << "InvalidDevice";
 }
 
diff --git a/neuralnetworks/utils/common/src/InvalidPreparedModel.cpp b/neuralnetworks/utils/common/src/InvalidPreparedModel.cpp
index 8195462..f6f978d 100644
--- a/neuralnetworks/utils/common/src/InvalidPreparedModel.cpp
+++ b/neuralnetworks/utils/common/src/InvalidPreparedModel.cpp
@@ -27,9 +27,12 @@
 namespace android::hardware::neuralnetworks::utils {
 
 nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>>
-InvalidPreparedModel::execute(const nn::Request& /*request*/, nn::MeasureTiming /*measure*/,
-                              const nn::OptionalTimePoint& /*deadline*/,
-                              const nn::OptionalDuration& /*loopTimeoutDuration*/) const {
+InvalidPreparedModel::execute(
+        const nn::Request& /*request*/, nn::MeasureTiming /*measure*/,
+        const nn::OptionalTimePoint& /*deadline*/,
+        const nn::OptionalDuration& /*loopTimeoutDuration*/,
+        const std::vector<nn::TokenValuePair>& /*hints*/,
+        const std::vector<nn::ExtensionNameAndPrefix>& /*extensionNameToPrefix*/) const {
     return NN_ERROR() << "InvalidPreparedModel";
 }
 
@@ -38,13 +41,17 @@
         const nn::Request& /*request*/, const std::vector<nn::SyncFence>& /*waitFor*/,
         nn::MeasureTiming /*measure*/, const nn::OptionalTimePoint& /*deadline*/,
         const nn::OptionalDuration& /*loopTimeoutDuration*/,
-        const nn::OptionalDuration& /*timeoutDurationAfterFence*/) const {
+        const nn::OptionalDuration& /*timeoutDurationAfterFence*/,
+        const std::vector<nn::TokenValuePair>& /*hints*/,
+        const std::vector<nn::ExtensionNameAndPrefix>& /*extensionNameToPrefix*/) const {
     return NN_ERROR() << "InvalidPreparedModel";
 }
 
 nn::GeneralResult<nn::SharedExecution> InvalidPreparedModel::createReusableExecution(
         const nn::Request& /*request*/, nn::MeasureTiming /*measure*/,
-        const nn::OptionalDuration& /*loopTimeoutDuration*/) const {
+        const nn::OptionalDuration& /*loopTimeoutDuration*/,
+        const std::vector<nn::TokenValuePair>& /*hints*/,
+        const std::vector<nn::ExtensionNameAndPrefix>& /*extensionNameToPrefix*/) const {
     return NN_ERROR() << "InvalidPreparedModel";
 }
 
diff --git a/neuralnetworks/utils/common/src/ResilientBurst.cpp b/neuralnetworks/utils/common/src/ResilientBurst.cpp
index 79cbe39..bf7a8ea 100644
--- a/neuralnetworks/utils/common/src/ResilientBurst.cpp
+++ b/neuralnetworks/utils/common/src/ResilientBurst.cpp
@@ -105,37 +105,49 @@
 
 nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> ResilientBurst::execute(
         const nn::Request& request, nn::MeasureTiming measure,
-        const nn::OptionalTimePoint& deadline,
-        const nn::OptionalDuration& loopTimeoutDuration) const {
-    const auto fn = [&request, measure, deadline, loopTimeoutDuration](const nn::IBurst& burst) {
-        return burst.execute(request, measure, deadline, loopTimeoutDuration);
+        const nn::OptionalTimePoint& deadline, const nn::OptionalDuration& loopTimeoutDuration,
+        const std::vector<nn::TokenValuePair>& hints,
+        const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const {
+    const auto fn = [&request, measure, deadline, loopTimeoutDuration, &hints,
+                     &extensionNameToPrefix](const nn::IBurst& burst) {
+        return burst.execute(request, measure, deadline, loopTimeoutDuration, hints,
+                             extensionNameToPrefix);
     };
     return protect(*this, fn);
 }
 
 nn::GeneralResult<nn::SharedExecution> ResilientBurst::createReusableExecution(
         const nn::Request& request, nn::MeasureTiming measure,
-        const nn::OptionalDuration& loopTimeoutDuration) const {
+        const nn::OptionalDuration& loopTimeoutDuration,
+        const std::vector<nn::TokenValuePair>& hints,
+        const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const {
 #if 0
     auto self = shared_from_this();
-    ResilientExecution::Factory makeExecution =
-            [burst = std::move(self), request, measure, loopTimeoutDuration] {
-        return burst->createReusableExecutionInternal(request, measure, loopTimeoutDuration);
+    ResilientExecution::Factory makeExecution = [burst = std::move(self), request, measure,
+                                                 loopTimeoutDuration, &hints,
+                                                 &extensionNameToPrefix] {
+        return burst->createReusableExecutionInternal(request, measure, loopTimeoutDuration, hints,
+                                                      extensionNameToPrefix);
     };
     return ResilientExecution::create(std::move(makeExecution));
 #else
-    return createReusableExecutionInternal(request, measure, loopTimeoutDuration);
+    return createReusableExecutionInternal(request, measure, loopTimeoutDuration, hints,
+                                           extensionNameToPrefix);
 #endif
 }
 
 nn::GeneralResult<nn::SharedExecution> ResilientBurst::createReusableExecutionInternal(
         const nn::Request& request, nn::MeasureTiming measure,
-        const nn::OptionalDuration& loopTimeoutDuration) const {
+        const nn::OptionalDuration& loopTimeoutDuration,
+        const std::vector<nn::TokenValuePair>& hints,
+        const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const {
     if (!isValidInternal()) {
         return std::make_shared<const InvalidExecution>();
     }
-    const auto fn = [&request, measure, &loopTimeoutDuration](const nn::IBurst& burst) {
-        return burst.createReusableExecution(request, measure, loopTimeoutDuration);
+    const auto fn = [&request, measure, &loopTimeoutDuration, &hints,
+                     &extensionNameToPrefix](const nn::IBurst& burst) {
+        return burst.createReusableExecution(request, measure, loopTimeoutDuration, hints,
+                                             extensionNameToPrefix);
     };
     return protect(*this, fn);
 }
diff --git a/neuralnetworks/utils/common/src/ResilientDevice.cpp b/neuralnetworks/utils/common/src/ResilientDevice.cpp
index 2023c9a..a5c2640 100644
--- a/neuralnetworks/utils/common/src/ResilientDevice.cpp
+++ b/neuralnetworks/utils/common/src/ResilientDevice.cpp
@@ -179,19 +179,21 @@
 nn::GeneralResult<nn::SharedPreparedModel> ResilientDevice::prepareModel(
         const nn::Model& model, nn::ExecutionPreference preference, nn::Priority priority,
         nn::OptionalTimePoint deadline, const std::vector<nn::SharedHandle>& modelCache,
-        const std::vector<nn::SharedHandle>& dataCache, const nn::CacheToken& token) const {
+        const std::vector<nn::SharedHandle>& dataCache, const nn::CacheToken& token,
+        const std::vector<nn::TokenValuePair>& hints,
+        const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const {
 #if 0
     auto self = shared_from_this();
     ResilientPreparedModel::Factory makePreparedModel = [device = std::move(self), model,
                                                          preference, priority, deadline, modelCache,
-                                                         dataCache, token] {
+                                                         dataCache, token, hints, extensionNameToPrefix] {
         return device->prepareModelInternal(model, preference, priority, deadline, modelCache,
-                                            dataCache, token);
+                                            dataCache, token, hints, extensionNameToPrefix);
     };
     return ResilientPreparedModel::create(std::move(makePreparedModel));
 #else
-    return prepareModelInternal(model, preference, priority, deadline, modelCache, dataCache,
-                                token);
+    return prepareModelInternal(model, preference, priority, deadline, modelCache, dataCache, token,
+                                hints, extensionNameToPrefix);
 #endif
 }
 
@@ -234,14 +236,16 @@
 nn::GeneralResult<nn::SharedPreparedModel> ResilientDevice::prepareModelInternal(
         const nn::Model& model, nn::ExecutionPreference preference, nn::Priority priority,
         nn::OptionalTimePoint deadline, const std::vector<nn::SharedHandle>& modelCache,
-        const std::vector<nn::SharedHandle>& dataCache, const nn::CacheToken& token) const {
+        const std::vector<nn::SharedHandle>& dataCache, const nn::CacheToken& token,
+        const std::vector<nn::TokenValuePair>& hints,
+        const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const {
     if (!isValidInternal()) {
         return std::make_shared<const InvalidPreparedModel>();
     }
-    const auto fn = [&model, preference, priority, &deadline, &modelCache, &dataCache,
-                     &token](const nn::IDevice& device) {
+    const auto fn = [&model, preference, priority, &deadline, &modelCache, &dataCache, &token,
+                     &hints, &extensionNameToPrefix](const nn::IDevice& device) {
         return device.prepareModel(model, preference, priority, deadline, modelCache, dataCache,
-                                   token);
+                                   token, hints, extensionNameToPrefix);
     };
     return protect(*this, fn, /*blocking=*/false);
 }
diff --git a/neuralnetworks/utils/common/src/ResilientPreparedModel.cpp b/neuralnetworks/utils/common/src/ResilientPreparedModel.cpp
index 1ae19bc..b5843c0 100644
--- a/neuralnetworks/utils/common/src/ResilientPreparedModel.cpp
+++ b/neuralnetworks/utils/common/src/ResilientPreparedModel.cpp
@@ -104,43 +104,53 @@
 }
 
 nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>>
-ResilientPreparedModel::execute(const nn::Request& request, nn::MeasureTiming measure,
-                                const nn::OptionalTimePoint& deadline,
-                                const nn::OptionalDuration& loopTimeoutDuration) const {
-    const auto fn = [&request, measure, &deadline,
-                     &loopTimeoutDuration](const nn::IPreparedModel& preparedModel) {
-        return preparedModel.execute(request, measure, deadline, loopTimeoutDuration);
+ResilientPreparedModel::execute(
+        const nn::Request& request, nn::MeasureTiming measure,
+        const nn::OptionalTimePoint& deadline, const nn::OptionalDuration& loopTimeoutDuration,
+        const std::vector<nn::TokenValuePair>& hints,
+        const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const {
+    const auto fn = [&request, measure, &deadline, &loopTimeoutDuration, &hints,
+                     &extensionNameToPrefix](const nn::IPreparedModel& preparedModel) {
+        return preparedModel.execute(request, measure, deadline, loopTimeoutDuration, hints,
+                                     extensionNameToPrefix);
     };
     return protect(*this, fn);
 }
 
 nn::GeneralResult<std::pair<nn::SyncFence, nn::ExecuteFencedInfoCallback>>
-ResilientPreparedModel::executeFenced(const nn::Request& request,
-                                      const std::vector<nn::SyncFence>& waitFor,
-                                      nn::MeasureTiming measure,
-                                      const nn::OptionalTimePoint& deadline,
-                                      const nn::OptionalDuration& loopTimeoutDuration,
-                                      const nn::OptionalDuration& timeoutDurationAfterFence) const {
+ResilientPreparedModel::executeFenced(
+        const nn::Request& request, const std::vector<nn::SyncFence>& waitFor,
+        nn::MeasureTiming measure, const nn::OptionalTimePoint& deadline,
+        const nn::OptionalDuration& loopTimeoutDuration,
+        const nn::OptionalDuration& timeoutDurationAfterFence,
+        const std::vector<nn::TokenValuePair>& hints,
+        const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const {
     const auto fn = [&request, &waitFor, measure, &deadline, &loopTimeoutDuration,
-                     &timeoutDurationAfterFence](const nn::IPreparedModel& preparedModel) {
+                     &timeoutDurationAfterFence, &hints,
+                     &extensionNameToPrefix](const nn::IPreparedModel& preparedModel) {
         return preparedModel.executeFenced(request, waitFor, measure, deadline, loopTimeoutDuration,
-                                           timeoutDurationAfterFence);
+                                           timeoutDurationAfterFence, hints, extensionNameToPrefix);
     };
     return protect(*this, fn);
 }
 
 nn::GeneralResult<nn::SharedExecution> ResilientPreparedModel::createReusableExecution(
         const nn::Request& request, nn::MeasureTiming measure,
-        const nn::OptionalDuration& loopTimeoutDuration) const {
+        const nn::OptionalDuration& loopTimeoutDuration,
+        const std::vector<nn::TokenValuePair>& hints,
+        const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const {
 #if 0
     auto self = shared_from_this();
-    ResilientExecution::Factory makeExecution =
-            [preparedModel = std::move(self), request, measure, loopTimeoutDuration] {
-        return preparedModel->createReusableExecutionInternal(request, measure, loopTimeoutDuration);
+    ResilientExecution::Factory makeExecution = [preparedModel = std::move(self), request, measure,
+                                                 loopTimeoutDuration, hints,
+                                                 extensionNameToPrefix] {
+        return preparedModel->createReusableExecutionInternal(request, measure, loopTimeoutDuration,
+                                                              hints, extensionNameToPrefix);
     };
     return ResilientExecution::create(std::move(makeExecution));
 #else
-    return createReusableExecutionInternal(request, measure, loopTimeoutDuration);
+    return createReusableExecutionInternal(request, measure, loopTimeoutDuration, hints,
+                                           extensionNameToPrefix);
 #endif
 }
 
@@ -159,13 +169,16 @@
 
 nn::GeneralResult<nn::SharedExecution> ResilientPreparedModel::createReusableExecutionInternal(
         const nn::Request& request, nn::MeasureTiming measure,
-        const nn::OptionalDuration& loopTimeoutDuration) const {
+        const nn::OptionalDuration& loopTimeoutDuration,
+        const std::vector<nn::TokenValuePair>& hints,
+        const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix) const {
     if (!isValidInternal()) {
         return std::make_shared<const InvalidExecution>();
     }
-    const auto fn = [&request, measure,
-                     &loopTimeoutDuration](const nn::IPreparedModel& preparedModel) {
-        return preparedModel.createReusableExecution(request, measure, loopTimeoutDuration);
+    const auto fn = [&request, measure, &loopTimeoutDuration, &hints,
+                     &extensionNameToPrefix](const nn::IPreparedModel& preparedModel) {
+        return preparedModel.createReusableExecution(request, measure, loopTimeoutDuration, hints,
+                                                     extensionNameToPrefix);
     };
     return protect(*this, fn);
 }
diff --git a/neuralnetworks/utils/common/test/MockDevice.h b/neuralnetworks/utils/common/test/MockDevice.h
index a9428bc..a0fc5c3 100644
--- a/neuralnetworks/utils/common/test/MockDevice.h
+++ b/neuralnetworks/utils/common/test/MockDevice.h
@@ -39,7 +39,9 @@
     MOCK_METHOD(GeneralResult<SharedPreparedModel>, prepareModel,
                 (const Model& model, ExecutionPreference preference, Priority priority,
                  OptionalTimePoint deadline, const std::vector<SharedHandle>& modelCache,
-                 const std::vector<SharedHandle>& dataCache, const CacheToken& token),
+                 const std::vector<SharedHandle>& dataCache, const CacheToken& token,
+                 const std::vector<TokenValuePair>& hints,
+                 const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix),
                 (const, override));
     MOCK_METHOD(GeneralResult<SharedPreparedModel>, prepareModelFromCache,
                 (OptionalTimePoint deadline, const std::vector<SharedHandle>& modelCache,
diff --git a/neuralnetworks/utils/common/test/MockPreparedModel.h b/neuralnetworks/utils/common/test/MockPreparedModel.h
index c8ce006..b8613b2 100644
--- a/neuralnetworks/utils/common/test/MockPreparedModel.h
+++ b/neuralnetworks/utils/common/test/MockPreparedModel.h
@@ -27,17 +27,23 @@
   public:
     MOCK_METHOD((ExecutionResult<std::pair<std::vector<OutputShape>, Timing>>), execute,
                 (const Request& request, MeasureTiming measure, const OptionalTimePoint& deadline,
-                 const OptionalDuration& loopTimeoutDuration),
+                 const OptionalDuration& loopTimeoutDuration,
+                 const std::vector<TokenValuePair>& hints,
+                 const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix),
                 (const, override));
     MOCK_METHOD((GeneralResult<std::pair<SyncFence, ExecuteFencedInfoCallback>>), executeFenced,
                 (const Request& request, const std::vector<SyncFence>& waitFor,
                  MeasureTiming measure, const OptionalTimePoint& deadline,
                  const OptionalDuration& loopTimeoutDuration,
-                 const OptionalDuration& timeoutDurationAfterFence),
+                 const OptionalDuration& timeoutDurationAfterFence,
+                 const std::vector<TokenValuePair>& hints,
+                 const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix),
                 (const, override));
     MOCK_METHOD((GeneralResult<SharedExecution>), createReusableExecution,
-                (const nn::Request& request, nn::MeasureTiming measure,
-                 const nn::OptionalDuration& loopTimeoutDuration),
+                (const Request& request, MeasureTiming measure,
+                 const OptionalDuration& loopTimeoutDuration,
+                 const std::vector<TokenValuePair>& hints,
+                 const std::vector<nn::ExtensionNameAndPrefix>& extensionNameToPrefix),
                 (const, override));
     MOCK_METHOD(GeneralResult<SharedBurst>, configureExecutionBurst, (), (const, override));
     MOCK_METHOD(std::any, getUnderlyingResource, (), (const, override));
diff --git a/neuralnetworks/utils/common/test/ResilientDeviceTest.cpp b/neuralnetworks/utils/common/test/ResilientDeviceTest.cpp
index 0488b63..d9b8505 100644
--- a/neuralnetworks/utils/common/test/ResilientDeviceTest.cpp
+++ b/neuralnetworks/utils/common/test/ResilientDeviceTest.cpp
@@ -309,12 +309,12 @@
     // setup call
     const auto [mockDevice, mockDeviceFactory, device] = setup();
     const auto mockPreparedModel = std::make_shared<const nn::MockPreparedModel>();
-    EXPECT_CALL(*mockDevice, prepareModel(_, _, _, _, _, _, _))
+    EXPECT_CALL(*mockDevice, prepareModel(_, _, _, _, _, _, _, _, _))
             .Times(1)
             .WillOnce(Return(mockPreparedModel));
 
     // run test
-    const auto result = device->prepareModel({}, {}, {}, {}, {}, {}, {});
+    const auto result = device->prepareModel({}, {}, {}, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_TRUE(result.has_value())
@@ -324,12 +324,12 @@
 TEST(ResilientDeviceTest, prepareModelError) {
     // setup call
     const auto [mockDevice, mockDeviceFactory, device] = setup();
-    EXPECT_CALL(*mockDevice, prepareModel(_, _, _, _, _, _, _))
+    EXPECT_CALL(*mockDevice, prepareModel(_, _, _, _, _, _, _, _, _))
             .Times(1)
             .WillOnce(kReturnGeneralFailure);
 
     // run test
-    const auto result = device->prepareModel({}, {}, {}, {}, {}, {}, {});
+    const auto result = device->prepareModel({}, {}, {}, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -339,13 +339,13 @@
 TEST(ResilientDeviceTest, prepareModelDeadObjectFailedRecovery) {
     // setup call
     const auto [mockDevice, mockDeviceFactory, device] = setup();
-    EXPECT_CALL(*mockDevice, prepareModel(_, _, _, _, _, _, _))
+    EXPECT_CALL(*mockDevice, prepareModel(_, _, _, _, _, _, _, _, _))
             .Times(1)
             .WillOnce(kReturnDeadObject);
     EXPECT_CALL(*mockDeviceFactory, Call(false)).Times(1).WillOnce(kReturnGeneralFailure);
 
     // run test
-    const auto result = device->prepareModel({}, {}, {}, {}, {}, {}, {});
+    const auto result = device->prepareModel({}, {}, {}, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -355,18 +355,18 @@
 TEST(ResilientDeviceTest, prepareModelDeadObjectSuccessfulRecovery) {
     // setup call
     const auto [mockDevice, mockDeviceFactory, device] = setup();
-    EXPECT_CALL(*mockDevice, prepareModel(_, _, _, _, _, _, _))
+    EXPECT_CALL(*mockDevice, prepareModel(_, _, _, _, _, _, _, _, _))
             .Times(1)
             .WillOnce(kReturnDeadObject);
     const auto recoveredMockDevice = createConfiguredMockDevice();
     const auto mockPreparedModel = std::make_shared<const nn::MockPreparedModel>();
-    EXPECT_CALL(*recoveredMockDevice, prepareModel(_, _, _, _, _, _, _))
+    EXPECT_CALL(*recoveredMockDevice, prepareModel(_, _, _, _, _, _, _, _, _))
             .Times(1)
             .WillOnce(Return(mockPreparedModel));
     EXPECT_CALL(*mockDeviceFactory, Call(false)).Times(1).WillOnce(Return(recoveredMockDevice));
 
     // run test
-    const auto result = device->prepareModel({}, {}, {}, {}, {}, {}, {});
+    const auto result = device->prepareModel({}, {}, {}, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_TRUE(result.has_value())
@@ -679,7 +679,7 @@
     device->recover(mockDevice.get(), /*blocking=*/false);
 
     // run test
-    auto result = device->prepareModel({}, {}, {}, {}, {}, {}, {});
+    auto result = device->prepareModel({}, {}, {}, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_TRUE(result.has_value())
diff --git a/neuralnetworks/utils/common/test/ResilientPreparedModelTest.cpp b/neuralnetworks/utils/common/test/ResilientPreparedModelTest.cpp
index d396ca8..276bfba 100644
--- a/neuralnetworks/utils/common/test/ResilientPreparedModelTest.cpp
+++ b/neuralnetworks/utils/common/test/ResilientPreparedModelTest.cpp
@@ -104,12 +104,12 @@
 TEST(ResilientPreparedModelTest, execute) {
     // setup call
     const auto [mockPreparedModel, mockPreparedModelFactory, preparedModel] = setup();
-    EXPECT_CALL(*mockPreparedModel, execute(_, _, _, _))
+    EXPECT_CALL(*mockPreparedModel, execute(_, _, _, _, _, _))
             .Times(1)
             .WillOnce(Return(kNoExecutionError));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_TRUE(result.has_value())
@@ -119,10 +119,12 @@
 TEST(ResilientPreparedModelTest, executeError) {
     // setup call
     const auto [mockPreparedModel, mockPreparedModelFactory, preparedModel] = setup();
-    EXPECT_CALL(*mockPreparedModel, execute(_, _, _, _)).Times(1).WillOnce(kReturnGeneralFailure);
+    EXPECT_CALL(*mockPreparedModel, execute(_, _, _, _, _, _))
+            .Times(1)
+            .WillOnce(kReturnGeneralFailure);
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -132,12 +134,12 @@
 TEST(ResilientPreparedModelTest, executeDeadObjectFailedRecovery) {
     // setup call
     const auto [mockPreparedModel, mockPreparedModelFactory, preparedModel] = setup();
-    EXPECT_CALL(*mockPreparedModel, execute(_, _, _, _)).Times(1).WillOnce(kReturnDeadObject);
+    EXPECT_CALL(*mockPreparedModel, execute(_, _, _, _, _, _)).Times(1).WillOnce(kReturnDeadObject);
     constexpr auto ret = [] { return nn::error(nn::ErrorStatus::GENERAL_FAILURE); };
     EXPECT_CALL(*mockPreparedModelFactory, Call()).Times(1).WillOnce(ret);
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -147,9 +149,9 @@
 TEST(ResilientPreparedModelTest, executeDeadObjectSuccessfulRecovery) {
     // setup call
     const auto [mockPreparedModel, mockPreparedModelFactory, preparedModel] = setup();
-    EXPECT_CALL(*mockPreparedModel, execute(_, _, _, _)).Times(1).WillOnce(kReturnDeadObject);
+    EXPECT_CALL(*mockPreparedModel, execute(_, _, _, _, _, _)).Times(1).WillOnce(kReturnDeadObject);
     const auto recoveredMockPreparedModel = createConfiguredMockPreparedModel();
-    EXPECT_CALL(*recoveredMockPreparedModel, execute(_, _, _, _))
+    EXPECT_CALL(*recoveredMockPreparedModel, execute(_, _, _, _, _, _))
             .Times(1)
             .WillOnce(Return(kNoExecutionError));
     EXPECT_CALL(*mockPreparedModelFactory, Call())
@@ -157,7 +159,7 @@
             .WillOnce(Return(recoveredMockPreparedModel));
 
     // run test
-    const auto result = preparedModel->execute({}, {}, {}, {});
+    const auto result = preparedModel->execute({}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_TRUE(result.has_value())
@@ -167,12 +169,12 @@
 TEST(ResilientPreparedModelTest, executeFenced) {
     // setup call
     const auto [mockPreparedModel, mockPreparedModelFactory, preparedModel] = setup();
-    EXPECT_CALL(*mockPreparedModel, executeFenced(_, _, _, _, _, _))
+    EXPECT_CALL(*mockPreparedModel, executeFenced(_, _, _, _, _, _, _, _))
             .Times(1)
             .WillOnce(Return(kNoFencedExecutionError));
 
     // run test
-    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {});
+    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_TRUE(result.has_value())
@@ -182,12 +184,12 @@
 TEST(ResilientPreparedModelTest, executeFencedError) {
     // setup call
     const auto [mockPreparedModel, mockPreparedModelFactory, preparedModel] = setup();
-    EXPECT_CALL(*mockPreparedModel, executeFenced(_, _, _, _, _, _))
+    EXPECT_CALL(*mockPreparedModel, executeFenced(_, _, _, _, _, _, _, _))
             .Times(1)
             .WillOnce(kReturnGeneralFailure);
 
     // run test
-    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {});
+    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -197,13 +199,13 @@
 TEST(ResilientPreparedModelTest, executeFencedDeadObjectFailedRecovery) {
     // setup call
     const auto [mockPreparedModel, mockPreparedModelFactory, preparedModel] = setup();
-    EXPECT_CALL(*mockPreparedModel, executeFenced(_, _, _, _, _, _))
+    EXPECT_CALL(*mockPreparedModel, executeFenced(_, _, _, _, _, _, _, _))
             .Times(1)
             .WillOnce(kReturnDeadObject);
     EXPECT_CALL(*mockPreparedModelFactory, Call()).Times(1).WillOnce(kReturnGeneralFailure);
 
     // run test
-    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {});
+    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
@@ -213,11 +215,11 @@
 TEST(ResilientPreparedModelTest, executeFencedDeadObjectSuccessfulRecovery) {
     // setup call
     const auto [mockPreparedModel, mockPreparedModelFactory, preparedModel] = setup();
-    EXPECT_CALL(*mockPreparedModel, executeFenced(_, _, _, _, _, _))
+    EXPECT_CALL(*mockPreparedModel, executeFenced(_, _, _, _, _, _, _, _))
             .Times(1)
             .WillOnce(kReturnDeadObject);
     const auto recoveredMockPreparedModel = createConfiguredMockPreparedModel();
-    EXPECT_CALL(*recoveredMockPreparedModel, executeFenced(_, _, _, _, _, _))
+    EXPECT_CALL(*recoveredMockPreparedModel, executeFenced(_, _, _, _, _, _, _, _))
             .Times(1)
             .WillOnce(Return(kNoFencedExecutionError));
     EXPECT_CALL(*mockPreparedModelFactory, Call())
@@ -225,7 +227,7 @@
             .WillOnce(Return(recoveredMockPreparedModel));
 
     // run test
-    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {});
+    const auto result = preparedModel->executeFenced({}, {}, {}, {}, {}, {}, {}, {});
 
     // verify result
     ASSERT_TRUE(result.has_value())
@@ -235,12 +237,12 @@
 TEST(ResilientPreparedModelTest, createReusableExecution) {
     // setup call
     const auto [mockPreparedModel, mockPreparedModelFactory, preparedModel] = setup();
-    EXPECT_CALL(*mockPreparedModel, createReusableExecution(_, _, _))
+    EXPECT_CALL(*mockPreparedModel, createReusableExecution(_, _, _, _, _))
             .Times(1)
             .WillOnce(Return(kNoCreateReusableExecutionError));
 
     // run test
-    const auto result = preparedModel->createReusableExecution({}, {}, {});
+    const auto result = preparedModel->createReusableExecution({}, {}, {}, {}, {});
 
     // verify result
     ASSERT_TRUE(result.has_value())
@@ -250,12 +252,12 @@
 TEST(ResilientPreparedModelTest, createReusableExecutionError) {
     // setup call
     const auto [mockPreparedModel, mockPreparedModelFactory, preparedModel] = setup();
-    EXPECT_CALL(*mockPreparedModel, createReusableExecution(_, _, _))
+    EXPECT_CALL(*mockPreparedModel, createReusableExecution(_, _, _, _, _))
             .Times(1)
             .WillOnce(kReturnGeneralFailure);
 
     // run test
-    const auto result = preparedModel->createReusableExecution({}, {}, {});
+    const auto result = preparedModel->createReusableExecution({}, {}, {}, {}, {});
 
     // verify result
     ASSERT_FALSE(result.has_value());
diff --git a/radio/1.5/vts/functional/radio_hidl_hal_api.cpp b/radio/1.5/vts/functional/radio_hidl_hal_api.cpp
index d108951..152858f 100644
--- a/radio/1.5/vts/functional/radio_hidl_hal_api.cpp
+++ b/radio/1.5/vts/functional/radio_hidl_hal_api.cpp
@@ -1271,8 +1271,12 @@
     EXPECT_EQ(serial, radioRsp_v1_5->rspInfo.serial);
 
     int32_t firstApiLevel = android::base::GetIntProperty<int32_t>("ro.product.first_api_level", 0);
+    int32_t boardApiLevel = android::base::GetIntProperty<int32_t>("ro.board.first_api_level", 0);
     // Allow devices shipping with Radio::1_5 and Android 11 to not support barring info.
-    if (firstApiLevel > 0 && firstApiLevel <= 30) {
+    // b/212384410 Some GRF targets lauched with S release but with vendor R release
+    // do not support getBarringInfo API. Allow these devices to not support barring info.
+    if ((firstApiLevel > 0 && firstApiLevel <= 30) ||
+        (boardApiLevel > 0 && boardApiLevel <= 30)) {
         ASSERT_TRUE(CheckAnyOfErrors(radioRsp_v1_5->rspInfo.error,
                                      {RadioError::NONE, RadioError::REQUEST_NOT_SUPPORTED}));
         // Early exit for devices that don't support barring info.
diff --git a/radio/aidl/aidl_api/android.hardware.radio.data/current/android/hardware/radio/data/ApnTypes.aidl b/radio/aidl/aidl_api/android.hardware.radio.data/current/android/hardware/radio/data/ApnTypes.aidl
index 6982d40..980b042 100644
--- a/radio/aidl/aidl_api/android.hardware.radio.data/current/android/hardware/radio/data/ApnTypes.aidl
+++ b/radio/aidl/aidl_api/android.hardware.radio.data/current/android/hardware/radio/data/ApnTypes.aidl
@@ -47,4 +47,7 @@
   EMERGENCY = 512,
   MCX = 1024,
   XCAP = 2048,
+  VSIM = 4096,
+  BIP = 8192,
+  ENTERPRISE = 16384,
 }
diff --git a/radio/aidl/aidl_api/android.hardware.radio.data/current/android/hardware/radio/data/DataProfileInfo.aidl b/radio/aidl/aidl_api/android.hardware.radio.data/current/android/hardware/radio/data/DataProfileInfo.aidl
index 3342619..c8efea0 100644
--- a/radio/aidl/aidl_api/android.hardware.radio.data/current/android/hardware/radio/data/DataProfileInfo.aidl
+++ b/radio/aidl/aidl_api/android.hardware.radio.data/current/android/hardware/radio/data/DataProfileInfo.aidl
@@ -46,8 +46,8 @@
   int maxConns;
   int waitTime;
   boolean enabled;
-  android.hardware.radio.data.ApnTypes supportedApnTypesBitmap;
-  android.hardware.radio.RadioAccessFamily bearerBitmap;
+  int supportedApnTypesBitmap;
+  int bearerBitmap;
   int mtuV4;
   int mtuV6;
   boolean preferred;
diff --git a/radio/aidl/aidl_api/android.hardware.radio.data/current/android/hardware/radio/data/IRadioDataIndication.aidl b/radio/aidl/aidl_api/android.hardware.radio.data/current/android/hardware/radio/data/IRadioDataIndication.aidl
index b0cc1eb..0ffa1f7 100644
--- a/radio/aidl/aidl_api/android.hardware.radio.data/current/android/hardware/radio/data/IRadioDataIndication.aidl
+++ b/radio/aidl/aidl_api/android.hardware.radio.data/current/android/hardware/radio/data/IRadioDataIndication.aidl
@@ -38,4 +38,5 @@
   oneway void keepaliveStatus(in android.hardware.radio.RadioIndicationType type, in android.hardware.radio.data.KeepaliveStatus status);
   oneway void pcoData(in android.hardware.radio.RadioIndicationType type, in android.hardware.radio.data.PcoDataInfo pco);
   oneway void unthrottleApn(in android.hardware.radio.RadioIndicationType type, in android.hardware.radio.data.DataProfileInfo dataProfileInfo);
+  oneway void slicingConfigChanged(in android.hardware.radio.RadioIndicationType type, in android.hardware.radio.data.SlicingConfig slicingConfig);
 }
diff --git a/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/RadioCapability.aidl b/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/RadioCapability.aidl
index d5716ac..5aaf5a7 100644
--- a/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/RadioCapability.aidl
+++ b/radio/aidl/aidl_api/android.hardware.radio.modem/current/android/hardware/radio/modem/RadioCapability.aidl
@@ -36,7 +36,7 @@
 parcelable RadioCapability {
   int session;
   int phase;
-  android.hardware.radio.RadioAccessFamily raf;
+  int raf;
   String logicalModemUuid;
   int status;
   const int PHASE_CONFIGURED = 0;
diff --git a/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/IRadioNetwork.aidl b/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/IRadioNetwork.aidl
index c618791..2b70e45 100644
--- a/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/IRadioNetwork.aidl
+++ b/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/IRadioNetwork.aidl
@@ -50,12 +50,12 @@
   oneway void getVoiceRegistrationState(in int serial);
   oneway void isNrDualConnectivityEnabled(in int serial);
   oneway void responseAcknowledgement();
-  oneway void setAllowedNetworkTypesBitmap(in int serial, in android.hardware.radio.RadioAccessFamily networkTypeBitmap);
+  oneway void setAllowedNetworkTypesBitmap(in int serial, in int networkTypeBitmap);
   oneway void setBandMode(in int serial, in android.hardware.radio.network.RadioBandMode mode);
   oneway void setBarringPassword(in int serial, in String facility, in String oldPassword, in String newPassword);
   oneway void setCdmaRoamingPreference(in int serial, in android.hardware.radio.network.CdmaRoamingType type);
   oneway void setCellInfoListRate(in int serial, in int rate);
-  oneway void setIndicationFilter(in int serial, in android.hardware.radio.network.IndicationFilter indicationFilter);
+  oneway void setIndicationFilter(in int serial, in int indicationFilter);
   oneway void setLinkCapacityReportingCriteria(in int serial, in int hysteresisMs, in int hysteresisDlKbps, in int hysteresisUlKbps, in int[] thresholdsDownlinkKbps, in int[] thresholdsUplinkKbps, in android.hardware.radio.AccessNetwork accessNetwork);
   oneway void setLocationUpdates(in int serial, in boolean enable);
   oneway void setNetworkSelectionModeAutomatic(in int serial);
diff --git a/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/IRadioNetworkIndication.aidl b/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/IRadioNetworkIndication.aidl
index d135a69..bd03c51 100644
--- a/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/IRadioNetworkIndication.aidl
+++ b/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/IRadioNetworkIndication.aidl
@@ -44,7 +44,7 @@
   oneway void networkScanResult(in android.hardware.radio.RadioIndicationType type, in android.hardware.radio.network.NetworkScanResult result);
   oneway void networkStateChanged(in android.hardware.radio.RadioIndicationType type);
   oneway void nitzTimeReceived(in android.hardware.radio.RadioIndicationType type, in String nitzTime, in long receivedTimeMs, in long ageMs);
-  oneway void registrationFailed(in android.hardware.radio.RadioIndicationType type, in android.hardware.radio.network.CellIdentity cellIdentity, in String chosenPlmn, in android.hardware.radio.network.Domain domain, in int causeCode, in int additionalCauseCode);
+  oneway void registrationFailed(in android.hardware.radio.RadioIndicationType type, in android.hardware.radio.network.CellIdentity cellIdentity, in String chosenPlmn, in int domain, in int causeCode, in int additionalCauseCode);
   oneway void restrictedStateChanged(in android.hardware.radio.RadioIndicationType type, in android.hardware.radio.network.PhoneRestrictedState state);
   oneway void suppSvcNotify(in android.hardware.radio.RadioIndicationType type, in android.hardware.radio.network.SuppSvcNotification suppSvc);
   oneway void voiceRadioTechChanged(in android.hardware.radio.RadioIndicationType type, in android.hardware.radio.RadioTechnology rat);
diff --git a/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/IRadioNetworkResponse.aidl b/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/IRadioNetworkResponse.aidl
index 8cf4c31..5f6c736 100644
--- a/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/IRadioNetworkResponse.aidl
+++ b/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/IRadioNetworkResponse.aidl
@@ -35,7 +35,7 @@
 @VintfStability
 interface IRadioNetworkResponse {
   oneway void acknowledgeRequest(in int serial);
-  oneway void getAllowedNetworkTypesBitmapResponse(in android.hardware.radio.RadioResponseInfo info, in android.hardware.radio.RadioAccessFamily networkTypeBitmap);
+  oneway void getAllowedNetworkTypesBitmapResponse(in android.hardware.radio.RadioResponseInfo info, in int networkTypeBitmap);
   oneway void getAvailableBandModesResponse(in android.hardware.radio.RadioResponseInfo info, in android.hardware.radio.network.RadioBandMode[] bandModes);
   oneway void getAvailableNetworksResponse(in android.hardware.radio.RadioResponseInfo info, in android.hardware.radio.network.OperatorInfo[] networkInfos);
   oneway void getBarringInfoResponse(in android.hardware.radio.RadioResponseInfo info, in android.hardware.radio.network.CellIdentity cellIdentity, in android.hardware.radio.network.BarringInfo[] barringInfos);
diff --git a/radio/aidl/aidl_api/android.hardware.radio.voice/current/android/hardware/radio/voice/EmergencyNumber.aidl b/radio/aidl/aidl_api/android.hardware.radio.voice/current/android/hardware/radio/voice/EmergencyNumber.aidl
index 4f415ee..39bcf1a 100644
--- a/radio/aidl/aidl_api/android.hardware.radio.voice/current/android/hardware/radio/voice/EmergencyNumber.aidl
+++ b/radio/aidl/aidl_api/android.hardware.radio.voice/current/android/hardware/radio/voice/EmergencyNumber.aidl
@@ -37,7 +37,7 @@
   String number;
   String mcc;
   String mnc;
-  android.hardware.radio.voice.EmergencyServiceCategory categories;
+  int categories;
   String[] urns;
   int sources;
   const int SOURCE_NETWORK_SIGNALING = 1;
diff --git a/radio/aidl/aidl_api/android.hardware.radio.voice/current/android/hardware/radio/voice/IRadioVoice.aidl b/radio/aidl/aidl_api/android.hardware.radio.voice/current/android/hardware/radio/voice/IRadioVoice.aidl
index 68c82fa..34d155a 100644
--- a/radio/aidl/aidl_api/android.hardware.radio.voice/current/android/hardware/radio/voice/IRadioVoice.aidl
+++ b/radio/aidl/aidl_api/android.hardware.radio.voice/current/android/hardware/radio/voice/IRadioVoice.aidl
@@ -37,7 +37,7 @@
   oneway void acceptCall(in int serial);
   oneway void conference(in int serial);
   oneway void dial(in int serial, in android.hardware.radio.voice.Dial dialInfo);
-  oneway void emergencyDial(in int serial, in android.hardware.radio.voice.Dial dialInfo, in android.hardware.radio.voice.EmergencyServiceCategory categories, in String[] urns, in android.hardware.radio.voice.EmergencyCallRouting routing, in boolean hasKnownUserIntentEmergency, in boolean isTesting);
+  oneway void emergencyDial(in int serial, in android.hardware.radio.voice.Dial dialInfo, in int categories, in String[] urns, in android.hardware.radio.voice.EmergencyCallRouting routing, in boolean hasKnownUserIntentEmergency, in boolean isTesting);
   oneway void exitEmergencyCallbackMode(in int serial);
   oneway void explicitCallTransfer(in int serial);
   oneway void getCallForwardStatus(in int serial, in android.hardware.radio.voice.CallForwardInfo callInfo);
diff --git a/radio/aidl/android/hardware/radio/config/SimSlotStatus.aidl b/radio/aidl/android/hardware/radio/config/SimSlotStatus.aidl
index a1c3c27..b5cf633 100644
--- a/radio/aidl/android/hardware/radio/config/SimSlotStatus.aidl
+++ b/radio/aidl/android/hardware/radio/config/SimSlotStatus.aidl
@@ -42,7 +42,13 @@
      */
     String eid;
     /**
-     * PortInfo contains the ICCID, logical slot ID, and port state
+     * PortInfo contains the ICCID, logical slot ID, and port state.
+     * Cardstate has no relationship with whether the slot is active or inactive. Should always
+     * report up at least 1 port otherwise the logicalSlotIndex and portActive info will be lost.
+     * For example, the pSIM can be removed, but the slot can still be active. In that case, the
+     * SIM_STATUS reported for the corresponding logical stack will show CARDSTATE_ABSENT.
+     * Similarly, even if there is no profile enabled on the eSIM, that port can still be the
+     * active port in the slot mapping.
      */
     SimPortInfo[] portInfo;
 }
diff --git a/radio/aidl/android/hardware/radio/data/ApnTypes.aidl b/radio/aidl/android/hardware/radio/data/ApnTypes.aidl
index e780d8e..ae103fc 100644
--- a/radio/aidl/android/hardware/radio/data/ApnTypes.aidl
+++ b/radio/aidl/android/hardware/radio/data/ApnTypes.aidl
@@ -73,4 +73,16 @@
      * APN type for XCAP
      */
     XCAP = 1 << 11,
+    /**
+     * APN type for VSIM.
+     */
+    VSIM = 1 << 12,
+    /**
+     * APN type for BIP.
+     */
+    BIP = 1 << 13,
+    /**
+     * APN type for ENTERPRISE
+     */
+    ENTERPRISE = 1 << 14
 }
diff --git a/radio/aidl/android/hardware/radio/data/DataProfileInfo.aidl b/radio/aidl/android/hardware/radio/data/DataProfileInfo.aidl
index 0f06119..7360202 100644
--- a/radio/aidl/android/hardware/radio/data/DataProfileInfo.aidl
+++ b/radio/aidl/android/hardware/radio/data/DataProfileInfo.aidl
@@ -93,11 +93,11 @@
     /**
      * Supported APN types bitmap. See ApnTypes for the value of each bit.
      */
-    ApnTypes supportedApnTypesBitmap;
+    int supportedApnTypesBitmap;
     /**
      * The bearer bitmap. See RadioAccessFamily for the value of each bit.
      */
-    RadioAccessFamily bearerBitmap;
+    int bearerBitmap;
     /**
      * Maximum transmission unit (MTU) size in bytes for IPv4.
      */
diff --git a/radio/aidl/android/hardware/radio/data/IRadioDataIndication.aidl b/radio/aidl/android/hardware/radio/data/IRadioDataIndication.aidl
index 1772c88..938c695 100644
--- a/radio/aidl/android/hardware/radio/data/IRadioDataIndication.aidl
+++ b/radio/aidl/android/hardware/radio/data/IRadioDataIndication.aidl
@@ -21,6 +21,7 @@
 import android.hardware.radio.data.KeepaliveStatus;
 import android.hardware.radio.data.PcoDataInfo;
 import android.hardware.radio.data.SetupDataCallResult;
+import android.hardware.radio.data.SlicingConfig;
 
 /**
  * Interface declaring unsolicited radio indications for data APIs.
@@ -72,4 +73,17 @@
      * @param dataProfileInfo Data profile info.
      */
     void unthrottleApn(in RadioIndicationType type, in DataProfileInfo dataProfileInfo);
+
+    /**
+     * Indicates the current slicing configuration including URSP rules and NSSAIs
+     * (configured, allowed and rejected). URSP stands for UE route selection policy and is defined
+     * in 3GPP TS 24.526 Section 4.2. An NSSAI is a collection of network slices. Each network slice
+     * is identified by an S-NSSAI and is represented by the struct SliceInfo. NSSAI and S-NSSAI
+     * are defined in 3GPP TS 24.501.
+     *
+     * @param type Type of radio indication
+     * @param slicingConfig Current slicing configuration
+     *
+     */
+    void slicingConfigChanged(in RadioIndicationType type, in SlicingConfig slicingConfig);
 }
diff --git a/radio/aidl/android/hardware/radio/modem/RadioCapability.aidl b/radio/aidl/android/hardware/radio/modem/RadioCapability.aidl
index b7b8ef3..9bd5f21 100644
--- a/radio/aidl/android/hardware/radio/modem/RadioCapability.aidl
+++ b/radio/aidl/android/hardware/radio/modem/RadioCapability.aidl
@@ -71,7 +71,7 @@
     /**
      * 32-bit bitmap of RadioAccessFamily.
      */
-    RadioAccessFamily raf;
+    int raf;
     /**
      * A UUID typically "com.xxxx.lmX" where X is the logical modem.
      * RadioConst:MAX_UUID_LENGTH is the max length.
diff --git a/radio/aidl/android/hardware/radio/network/IRadioNetwork.aidl b/radio/aidl/android/hardware/radio/network/IRadioNetwork.aidl
index aaf432a..7a22a9a 100644
--- a/radio/aidl/android/hardware/radio/network/IRadioNetwork.aidl
+++ b/radio/aidl/android/hardware/radio/network/IRadioNetwork.aidl
@@ -195,7 +195,7 @@
      *
      * Response function is IRadioNetworkResponse.setAllowedNetworkTypesBitmapResponse()
      */
-    void setAllowedNetworkTypesBitmap(in int serial, in RadioAccessFamily networkTypeBitmap);
+    void setAllowedNetworkTypesBitmap(in int serial, in int networkTypeBitmap);
 
     /**
      * Assign a specified band for RF configuration.
@@ -253,7 +253,7 @@
      *
      * Response function is IRadioNetworkResponse.setIndicationFilterResponse()
      */
-    void setIndicationFilter(in int serial, in IndicationFilter indicationFilter);
+    void setIndicationFilter(in int serial, in int indicationFilter);
 
     /**
      * Sets the link capacity reporting criteria. The resulting reporting criteria are the AND of
diff --git a/radio/aidl/android/hardware/radio/network/IRadioNetworkIndication.aidl b/radio/aidl/android/hardware/radio/network/IRadioNetworkIndication.aidl
index ba7610d..6863ac3 100644
--- a/radio/aidl/android/hardware/radio/network/IRadioNetworkIndication.aidl
+++ b/radio/aidl/android/hardware/radio/network/IRadioNetworkIndication.aidl
@@ -136,8 +136,8 @@
      *        include the time spend in sleep / low power states. If it can not be guaranteed,
      *        there must not be any caching done at the modem and should fill in 0 for ageMs
      */
-    void nitzTimeReceived(in RadioIndicationType type, in String nitzTime,
-            in long receivedTimeMs, in long ageMs);
+    void nitzTimeReceived(
+            in RadioIndicationType type, in String nitzTime, in long receivedTimeMs, in long ageMs);
 
     /**
      * Report that Registration or a Location/Routing/Tracking Area update has failed.
@@ -165,7 +165,7 @@
      *        MAX_INT if this value is unused.
      */
     void registrationFailed(in RadioIndicationType type, in CellIdentity cellIdentity,
-            in String chosenPlmn, in Domain domain, in int causeCode, in int additionalCauseCode);
+            in String chosenPlmn, in int domain, in int causeCode, in int additionalCauseCode);
 
     /**
      * Indicates a restricted state change (eg, for Domain Specific Access Control).
diff --git a/radio/aidl/android/hardware/radio/network/IRadioNetworkResponse.aidl b/radio/aidl/android/hardware/radio/network/IRadioNetworkResponse.aidl
index 30f4221..e650321 100644
--- a/radio/aidl/android/hardware/radio/network/IRadioNetworkResponse.aidl
+++ b/radio/aidl/android/hardware/radio/network/IRadioNetworkResponse.aidl
@@ -62,8 +62,7 @@
      *   RadioError:REQUEST_NOT_SUPPORTED
      *   RadioError:NO_RESOURCES
      */
-    void getAllowedNetworkTypesBitmapResponse(
-            in RadioResponseInfo info, in RadioAccessFamily networkTypeBitmap);
+    void getAllowedNetworkTypesBitmapResponse(in RadioResponseInfo info, in int networkTypeBitmap);
 
     /**
      * @param info Response info struct containing response type, serial no. and error
diff --git a/radio/aidl/android/hardware/radio/sim/IRadioSim.aidl b/radio/aidl/android/hardware/radio/sim/IRadioSim.aidl
index c731caf..7923b14 100644
--- a/radio/aidl/android/hardware/radio/sim/IRadioSim.aidl
+++ b/radio/aidl/android/hardware/radio/sim/IRadioSim.aidl
@@ -205,6 +205,12 @@
      * Open a new logical channel and select the given application. This command
      * reflects TS 27.007 "open logical channel" operation (+CCHO).
      *
+     * For MEP-A(Multiple enabled profile), only dedicated port 0 is ISDR selectable.
+     * e.g., Port0 - for ISDR access and Port1/Port2 - the currently active ports/subscriptions.
+     * Port 0 should be transparent to AP and iccLogicalChannel API should remain the same.
+     * Even if the ISDR request comes over port1 or port2, Modem would just internally convert the
+     * portID to port0 and add the real port index as the payload of MANAGE_CHANNEL command.
+     *
      * @param serial Serial number of request.
      * @param aid AID value, See ETSI 102.221 and 101.220.
      * @param p2 P2 value, described in ISO 7816-4. Ignore if equal to RadioConst:P2_CONSTANT_NO_P2
diff --git a/radio/aidl/android/hardware/radio/voice/EmergencyNumber.aidl b/radio/aidl/android/hardware/radio/voice/EmergencyNumber.aidl
index aa4dde2..ddc5d76 100644
--- a/radio/aidl/android/hardware/radio/voice/EmergencyNumber.aidl
+++ b/radio/aidl/android/hardware/radio/voice/EmergencyNumber.aidl
@@ -78,7 +78,7 @@
      * The bitfield of EmergencyServiceCategory(s). See EmergencyServiceCategory for the value of
      * each bit.
      */
-    EmergencyServiceCategory categories;
+    int categories;
     /**
      * The list of emergency Uniform Resource Names (URN).
      */
diff --git a/radio/aidl/android/hardware/radio/voice/IRadioVoice.aidl b/radio/aidl/android/hardware/radio/voice/IRadioVoice.aidl
index a012be4..b25e63d 100644
--- a/radio/aidl/android/hardware/radio/voice/IRadioVoice.aidl
+++ b/radio/aidl/android/hardware/radio/voice/IRadioVoice.aidl
@@ -117,9 +117,9 @@
      *
      * Response function is IRadioVoiceResponse.emergencyDialResponse()
      */
-    void emergencyDial(in int serial, in Dial dialInfo, in EmergencyServiceCategory categories,
-            in String[] urns, in EmergencyCallRouting routing,
-            in boolean hasKnownUserIntentEmergency, in boolean isTesting);
+    void emergencyDial(in int serial, in Dial dialInfo, in int categories, in String[] urns,
+            in EmergencyCallRouting routing, in boolean hasKnownUserIntentEmergency,
+            in boolean isTesting);
 
     /**
      * Request the radio's system selection module to exit emergency callback mode. Radio must not
diff --git a/radio/aidl/compat/OWNERS b/radio/aidl/compat/OWNERS
new file mode 100644
index 0000000..471d806
--- /dev/null
+++ b/radio/aidl/compat/OWNERS
@@ -0,0 +1,3 @@
+# Bug component: 20868
+include ../../1.0/vts/OWNERS
+twasilczyk@google.com
diff --git a/radio/aidl/compat/libradiocompat/Android.bp b/radio/aidl/compat/libradiocompat/Android.bp
index 5294de4..487d91b 100644
--- a/radio/aidl/compat/libradiocompat/Android.bp
+++ b/radio/aidl/compat/libradiocompat/Android.bp
@@ -28,7 +28,6 @@
     cflags: [
         "-Wall",
         "-Wextra",
-        //"-Wold-style-cast",  // TODO(b/203699028) enable after aosp/1900880 gets merged
         "-DANDROID_UTILS_REF_BASE_DISABLE_IMPLICIT_CONSTRUCTION",
     ],
     shared_libs: [
@@ -56,6 +55,7 @@
         "libutils",
     ],
     srcs: [
+        "CallbackManager.cpp",
         "DriverContext.cpp",
         "RadioCompatBase.cpp",
         "RadioIndication.cpp",
diff --git a/radio/aidl/compat/libradiocompat/CallbackManager.cpp b/radio/aidl/compat/libradiocompat/CallbackManager.cpp
new file mode 100644
index 0000000..c2eaed1
--- /dev/null
+++ b/radio/aidl/compat/libradiocompat/CallbackManager.cpp
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <libradiocompat/CallbackManager.h>
+
+#include <android-base/logging.h>
+
+using namespace std::literals::chrono_literals;
+
+namespace android::hardware::radio::compat {
+
+/**
+ * How much setter thread will wait with setting response functions after the last
+ * setResponseFunctions call from the framework. Subsequent calls from the framework reset the
+ * clock, so this number should be larger than the longest time between setResponseFunctions calls
+ * from the framework.
+ *
+ * Real world measurements with Cuttlefish give <10ms delay between Modem and Data and <2ms delays
+ * between all others.
+ */
+static constexpr auto kDelayedSetterDelay = 100ms;
+
+CallbackManager::CallbackManager(std::shared_ptr<DriverContext> context, sp<V1_5::IRadio> hidlHal)
+    : mHidlHal(hidlHal),
+      mRadioResponse(sp<compat::RadioResponse>::make(context)),
+      mRadioIndication(sp<compat::RadioIndication>::make(context)),
+      mDelayedSetterThread(&CallbackManager::delayedSetterThread, this) {}
+
+CallbackManager::~CallbackManager() {
+    {
+        std::unique_lock<std::mutex> lock(mDelayedSetterGuard);
+        mDelayedSetterDeadline = std::nullopt;
+        mDestroy = true;
+        mDelayedSetterCv.notify_all();
+    }
+    mDelayedSetterThread.join();
+}
+
+RadioResponse& CallbackManager::response() const {
+    return *mRadioResponse;
+}
+
+void CallbackManager::setResponseFunctionsDelayed() {
+    std::unique_lock<std::mutex> lock(mDelayedSetterGuard);
+    mDelayedSetterDeadline = std::chrono::steady_clock::now() + kDelayedSetterDelay;
+    mDelayedSetterCv.notify_all();
+}
+
+void CallbackManager::delayedSetterThread() {
+    while (!mDestroy) {
+        std::unique_lock<std::mutex> lock(mDelayedSetterGuard);
+        auto deadline = mDelayedSetterDeadline;
+
+        // not waiting to set response functions
+        if (!deadline) {
+            mDelayedSetterCv.wait(lock);
+            continue;
+        }
+
+        // waiting to set response functions, but not yet
+        if (*deadline > std::chrono::steady_clock::now()) {
+            mDelayedSetterCv.wait_until(lock, *deadline);
+            continue;
+        }
+
+        mHidlHal->setResponseFunctions(mRadioResponse, mRadioIndication).assertOk();
+        mDelayedSetterDeadline = std::nullopt;
+    }
+}
+
+}  // namespace android::hardware::radio::compat
diff --git a/radio/aidl/compat/libradiocompat/RadioCompatBase.cpp b/radio/aidl/compat/libradiocompat/RadioCompatBase.cpp
index dba6c19..2a2d7a3 100644
--- a/radio/aidl/compat/libradiocompat/RadioCompatBase.cpp
+++ b/radio/aidl/compat/libradiocompat/RadioCompatBase.cpp
@@ -21,16 +21,10 @@
 namespace android::hardware::radio::compat {
 
 RadioCompatBase::RadioCompatBase(std::shared_ptr<DriverContext> context, sp<V1_5::IRadio> hidlHal,
-                                 sp<RadioResponse> radioResponse, sp<RadioIndication> radioInd)
+                                 std::shared_ptr<CallbackManager> cbMgr)
     : mContext(context),
       mHal1_5(hidlHal),
       mHal1_6(V1_6::IRadio::castFrom(hidlHal)),
-      mRadioResponse(radioResponse),
-      mRadioIndication(radioInd) {}
-
-V1_6::IRadioResponse& RadioCompatBase::respond() {
-    CHECK(mRadioResponse) << "This shouldn't happen (response functions are passed in constructor)";
-    return *mRadioResponse;
-}
+      mCallbackManager(cbMgr) {}
 
 }  // namespace android::hardware::radio::compat
diff --git a/radio/aidl/compat/libradiocompat/RadioResponse.cpp b/radio/aidl/compat/libradiocompat/RadioResponse.cpp
index e1bd446..dab70cc 100644
--- a/radio/aidl/compat/libradiocompat/RadioResponse.cpp
+++ b/radio/aidl/compat/libradiocompat/RadioResponse.cpp
@@ -26,13 +26,16 @@
 
 Return<void> RadioResponse::acknowledgeRequest(int32_t serial) {
     LOG_CALL << serial;
-    // TODO(b/203699028): send to correct requestor or confirm if spam is not a problem
-    if (mDataCb) mDataCb->acknowledgeRequest(serial);
-    if (mMessagingCb) mMessagingCb->acknowledgeRequest(serial);
-    if (mModemCb) mModemCb->acknowledgeRequest(serial);
-    if (mNetworkCb) mNetworkCb->acknowledgeRequest(serial);
-    if (mSimCb) mSimCb->acknowledgeRequest(serial);
-    if (mVoiceCb) mVoiceCb->acknowledgeRequest(serial);
+    /* We send ACKs to all callbacks instead of the one requested it to make implementation simpler.
+     * If it turns out to be a problem, we would have to track where serials come from and make sure
+     * this tracking data (e.g. a map) doesn't grow indefinitely.
+     */
+    if (mDataCb) mDataCb.get()->acknowledgeRequest(serial);
+    if (mMessagingCb) mMessagingCb.get()->acknowledgeRequest(serial);
+    if (mModemCb) mModemCb.get()->acknowledgeRequest(serial);
+    if (mNetworkCb) mNetworkCb.get()->acknowledgeRequest(serial);
+    if (mSimCb) mSimCb.get()->acknowledgeRequest(serial);
+    if (mVoiceCb) mVoiceCb.get()->acknowledgeRequest(serial);
     return {};
 }
 
diff --git a/radio/aidl/compat/libradiocompat/commonStructs.cpp b/radio/aidl/compat/libradiocompat/commonStructs.cpp
index c25768d..6e4c873 100644
--- a/radio/aidl/compat/libradiocompat/commonStructs.cpp
+++ b/radio/aidl/compat/libradiocompat/commonStructs.cpp
@@ -20,11 +20,11 @@
 
 namespace aidl = ::aidl::android::hardware::radio;
 
-V1_6::RadioResponseInfo notSupported(int32_t serial) {
+aidl::RadioResponseInfo notSupported(int32_t serial) {
     return {
-            .type = V1_0::RadioResponseType::SOLICITED,
+            .type = aidl::RadioResponseType::SOLICITED,
             .serial = serial,
-            .error = V1_6::RadioError::REQUEST_NOT_SUPPORTED,
+            .error = aidl::RadioError::REQUEST_NOT_SUPPORTED,
     };
 }
 
diff --git a/radio/aidl/compat/libradiocompat/commonStructs.h b/radio/aidl/compat/libradiocompat/commonStructs.h
index b859916..a4a4869 100644
--- a/radio/aidl/compat/libradiocompat/commonStructs.h
+++ b/radio/aidl/compat/libradiocompat/commonStructs.h
@@ -21,7 +21,7 @@
 
 namespace android::hardware::radio::compat {
 
-V1_6::RadioResponseInfo notSupported(int32_t serial);
+aidl::android::hardware::radio::RadioResponseInfo notSupported(int32_t serial);
 
 std::string toAidl(const hidl_string& str);
 hidl_string toHidl(const std::string& str);
diff --git a/radio/aidl/compat/libradiocompat/config/RadioConfig.cpp b/radio/aidl/compat/libradiocompat/config/RadioConfig.cpp
index d0d6f7a..b450418 100644
--- a/radio/aidl/compat/libradiocompat/config/RadioConfig.cpp
+++ b/radio/aidl/compat/libradiocompat/config/RadioConfig.cpp
@@ -16,12 +16,12 @@
 
 #include <libradiocompat/RadioConfig.h>
 
-#include "RadioConfigIndication.h"
-#include "RadioConfigResponse.h"
 #include "commonStructs.h"
 #include "debug.h"
 #include "structs.h"
 
+#include "collections.h"
+
 #define RADIO_MODULE "Config"
 
 namespace android::hardware::radio::compat {
@@ -31,11 +31,13 @@
 constexpr auto ok = &ScopedAStatus::ok;
 
 RadioConfig::RadioConfig(sp<config::V1_1::IRadioConfig> hidlHal)
-    : mHal1_1(hidlHal), mHal1_3(config::V1_3::IRadioConfig::castFrom(hidlHal)) {}
+    : mHal1_1(hidlHal),
+      mHal1_3(config::V1_3::IRadioConfig::castFrom(hidlHal)),
+      mRadioConfigResponse(sp<RadioConfigResponse>::make()),
+      mRadioConfigIndication(sp<RadioConfigIndication>::make()) {}
 
-config::V1_3::IRadioConfigResponse& RadioConfig::respond() {
-    CHECK(mRadioConfigResponse) << "setResponseFunctions was not called yet";
-    return *mRadioConfigResponse;
+std::shared_ptr<aidl::IRadioConfigResponse> RadioConfig::respond() {
+    return mRadioConfigResponse->respond();
 }
 
 ScopedAStatus RadioConfig::getHalDeviceCapabilities(int32_t serial) {
@@ -43,7 +45,7 @@
     if (mHal1_3) {
         mHal1_3->getHalDeviceCapabilities(serial);
     } else {
-        respond().getHalDeviceCapabilitiesResponse(notSupported(serial), false);
+        respond()->getHalDeviceCapabilitiesResponse(notSupported(serial), false);
     }
     return ok();
 }
@@ -86,9 +88,9 @@
     CHECK(radioConfigResponse);
     CHECK(radioConfigIndication);
 
-    mRadioConfigResponse = sp<RadioConfigResponse>::make(radioConfigResponse);
-    mRadioConfigIndication = sp<RadioConfigIndication>::make(radioConfigIndication);
-    mHal1_1->setResponseFunctions(mRadioConfigResponse, mRadioConfigIndication);
+    mRadioConfigResponse->setResponseFunction(radioConfigResponse);
+    mRadioConfigIndication->setResponseFunction(radioConfigIndication);
+    mHal1_1->setResponseFunctions(mRadioConfigResponse, mRadioConfigIndication).assertOk();
 
     return ok();
 }
diff --git a/radio/aidl/compat/libradiocompat/config/RadioConfigIndication.cpp b/radio/aidl/compat/libradiocompat/config/RadioConfigIndication.cpp
index 0320ad7..c1e32c1 100644
--- a/radio/aidl/compat/libradiocompat/config/RadioConfigIndication.cpp
+++ b/radio/aidl/compat/libradiocompat/config/RadioConfigIndication.cpp
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-#include "RadioConfigIndication.h"
+#include <libradiocompat/RadioConfigIndication.h>
 
 #include "commonStructs.h"
 #include "debug.h"
@@ -28,20 +28,26 @@
 
 namespace aidl = ::aidl::android::hardware::radio::config;
 
-RadioConfigIndication::RadioConfigIndication(std::shared_ptr<aidl::IRadioConfigIndication> callback)
-    : mCallback(callback) {}
+void RadioConfigIndication::setResponseFunction(
+        std::shared_ptr<aidl::IRadioConfigIndication> callback) {
+    mCallback = callback;
+}
+
+std::shared_ptr<aidl::IRadioConfigIndication> RadioConfigIndication::indicate() {
+    return mCallback.get();
+}
 
 Return<void> RadioConfigIndication::simSlotsStatusChanged(
         V1_0::RadioIndicationType type, const hidl_vec<config::V1_0::SimSlotStatus>& slotStatus) {
     LOG_CALL << type;
-    mCallback->simSlotsStatusChanged(toAidl(type), toAidl(slotStatus));
+    indicate()->simSlotsStatusChanged(toAidl(type), toAidl(slotStatus));
     return {};
 }
 
 Return<void> RadioConfigIndication::simSlotsStatusChanged_1_2(
         V1_0::RadioIndicationType type, const hidl_vec<config::V1_2::SimSlotStatus>& slotStatus) {
     LOG_CALL << type;
-    mCallback->simSlotsStatusChanged(toAidl(type), toAidl(slotStatus));
+    indicate()->simSlotsStatusChanged(toAidl(type), toAidl(slotStatus));
     return {};
 }
 
diff --git a/radio/aidl/compat/libradiocompat/config/RadioConfigIndication.h b/radio/aidl/compat/libradiocompat/config/RadioConfigIndication.h
deleted file mode 100644
index 3d8d971..0000000
--- a/radio/aidl/compat/libradiocompat/config/RadioConfigIndication.h
+++ /dev/null
@@ -1,38 +0,0 @@
-/*
- * Copyright (C) 2021 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#pragma once
-
-#include <aidl/android/hardware/radio/config/IRadioConfigIndication.h>
-#include <android/hardware/radio/config/1.2/IRadioConfigIndication.h>
-
-namespace android::hardware::radio::compat {
-
-class RadioConfigIndication : public config::V1_2::IRadioConfigIndication {
-    std::shared_ptr<aidl::android::hardware::radio::config::IRadioConfigIndication> mCallback;
-
-    Return<void> simSlotsStatusChanged(
-            V1_0::RadioIndicationType type,
-            const hidl_vec<config::V1_0::SimSlotStatus>& slotStatus) override;
-    Return<void> simSlotsStatusChanged_1_2(
-            V1_0::RadioIndicationType type,
-            const hidl_vec<config::V1_2::SimSlotStatus>& slotStatus) override;
-
-  public:
-    RadioConfigIndication(
-            std::shared_ptr<aidl::android::hardware::radio::config::IRadioConfigIndication> cb);
-};
-
-}  // namespace android::hardware::radio::compat
diff --git a/radio/aidl/compat/libradiocompat/config/RadioConfigResponse.cpp b/radio/aidl/compat/libradiocompat/config/RadioConfigResponse.cpp
index 7066ae4..523c504 100644
--- a/radio/aidl/compat/libradiocompat/config/RadioConfigResponse.cpp
+++ b/radio/aidl/compat/libradiocompat/config/RadioConfigResponse.cpp
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-#include "RadioConfigResponse.h"
+#include <libradiocompat/RadioConfigResponse.h>
 
 #include "commonStructs.h"
 #include "debug.h"
@@ -28,14 +28,20 @@
 
 namespace aidl = ::aidl::android::hardware::radio::config;
 
-RadioConfigResponse::RadioConfigResponse(std::shared_ptr<aidl::IRadioConfigResponse> callback)
-    : mCallback(callback) {}
+void RadioConfigResponse::setResponseFunction(
+        std::shared_ptr<aidl::IRadioConfigResponse> callback) {
+    mCallback = callback;
+}
+
+std::shared_ptr<aidl::IRadioConfigResponse> RadioConfigResponse::respond() {
+    return mCallback.get();
+}
 
 Return<void> RadioConfigResponse::getSimSlotsStatusResponse(
         const V1_0::RadioResponseInfo& info,
         const hidl_vec<config::V1_0::SimSlotStatus>& slotStatus) {
     LOG_CALL << info.serial;
-    mCallback->getSimSlotsStatusResponse(toAidl(info), toAidl(slotStatus));
+    respond()->getSimSlotsStatusResponse(toAidl(info), toAidl(slotStatus));
     return {};
 };
 
@@ -43,47 +49,47 @@
         const V1_0::RadioResponseInfo& info,
         const hidl_vec<config::V1_2::SimSlotStatus>& slotStatus) {
     LOG_CALL << info.serial;
-    mCallback->getSimSlotsStatusResponse(toAidl(info), toAidl(slotStatus));
+    respond()->getSimSlotsStatusResponse(toAidl(info), toAidl(slotStatus));
     return {};
 };
 
 Return<void> RadioConfigResponse::setSimSlotsMappingResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    mCallback->setSimSlotsMappingResponse(toAidl(info));
+    respond()->setSimSlotsMappingResponse(toAidl(info));
     return {};
 };
 
 Return<void> RadioConfigResponse::getPhoneCapabilityResponse(
         const V1_0::RadioResponseInfo& info, const config::V1_1::PhoneCapability& phoneCapability) {
     LOG_CALL << info.serial;
-    mCallback->getPhoneCapabilityResponse(toAidl(info), toAidl(phoneCapability));
+    respond()->getPhoneCapabilityResponse(toAidl(info), toAidl(phoneCapability));
     return {};
 };
 
 Return<void> RadioConfigResponse::setPreferredDataModemResponse(
         const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    mCallback->setPreferredDataModemResponse(toAidl(info));
+    respond()->setPreferredDataModemResponse(toAidl(info));
     return {};
 };
 
 Return<void> RadioConfigResponse::setModemsConfigResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    mCallback->setNumOfLiveModemsResponse(toAidl(info));
+    respond()->setNumOfLiveModemsResponse(toAidl(info));
     return {};
 };
 
 Return<void> RadioConfigResponse::getModemsConfigResponse(
         const V1_0::RadioResponseInfo& info, const config::V1_1::ModemsConfig& modemsConfig) {
     LOG_CALL << info.serial;
-    mCallback->getNumOfLiveModemsResponse(toAidl(info), modemsConfig.numOfLiveModems);
+    respond()->getNumOfLiveModemsResponse(toAidl(info), modemsConfig.numOfLiveModems);
     return {};
 };
 
 Return<void> RadioConfigResponse::getHalDeviceCapabilitiesResponse(
         const V1_6::RadioResponseInfo& info, bool modemReducedFeatureSet1) {
     LOG_CALL << info.serial;
-    mCallback->getHalDeviceCapabilitiesResponse(toAidl(info), modemReducedFeatureSet1);
+    respond()->getHalDeviceCapabilitiesResponse(toAidl(info), modemReducedFeatureSet1);
     return {};
 };
 
diff --git a/radio/aidl/compat/libradiocompat/config/RadioConfigResponse.h b/radio/aidl/compat/libradiocompat/config/RadioConfigResponse.h
deleted file mode 100644
index 1461dd2..0000000
--- a/radio/aidl/compat/libradiocompat/config/RadioConfigResponse.h
+++ /dev/null
@@ -1,48 +0,0 @@
-/*
- * Copyright (C) 2021 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-#pragma once
-
-#include <aidl/android/hardware/radio/config/IRadioConfigResponse.h>
-#include <android/hardware/radio/config/1.3/IRadioConfigResponse.h>
-
-namespace android::hardware::radio::compat {
-
-class RadioConfigResponse : public config::V1_3::IRadioConfigResponse {
-    std::shared_ptr<aidl::android::hardware::radio::config::IRadioConfigResponse> mCallback;
-
-    Return<void> getSimSlotsStatusResponse(
-            const V1_0::RadioResponseInfo& info,
-            const hidl_vec<config::V1_0::SimSlotStatus>& slotStatus) override;
-    Return<void> setSimSlotsMappingResponse(const V1_0::RadioResponseInfo& info) override;
-    Return<void> getPhoneCapabilityResponse(
-            const V1_0::RadioResponseInfo& info,
-            const config::V1_1::PhoneCapability& phoneCapability) override;
-    Return<void> setPreferredDataModemResponse(const V1_0::RadioResponseInfo& info) override;
-    Return<void> setModemsConfigResponse(const V1_0::RadioResponseInfo& info) override;
-    Return<void> getModemsConfigResponse(const V1_0::RadioResponseInfo& info,
-                                         const config::V1_1::ModemsConfig& modemsConfig) override;
-    Return<void> getSimSlotsStatusResponse_1_2(
-            const V1_0::RadioResponseInfo& info,
-            const hidl_vec<config::V1_2::SimSlotStatus>& slotStatus) override;
-    Return<void> getHalDeviceCapabilitiesResponse(const V1_6::RadioResponseInfo& info,
-                                                  bool modemReducedFeatureSet1) override;
-
-  public:
-    RadioConfigResponse(
-            std::shared_ptr<aidl::android::hardware::radio::config::IRadioConfigResponse> callback);
-};
-
-}  // namespace android::hardware::radio::compat
diff --git a/radio/aidl/compat/libradiocompat/config/structs.cpp b/radio/aidl/compat/libradiocompat/config/structs.cpp
index 9ba5623..39ad944 100644
--- a/radio/aidl/compat/libradiocompat/config/structs.cpp
+++ b/radio/aidl/compat/libradiocompat/config/structs.cpp
@@ -24,14 +24,11 @@
 
 namespace aidl = ::aidl::android::hardware::radio::config;
 
-hidl_vec<uint32_t> toHidl(const std::vector<aidl::SlotPortMapping>& slotMap) {
-    hidl_vec<uint32_t> out(slotMap.size());
-    for (const auto& el : slotMap) {
-        CHECK_GE(el.portId, 0);
-        CHECK_LT(static_cast<size_t>(el.portId), out.size());
-        out[el.portId] = el.physicalSlotId;
+uint32_t toHidl(const aidl::SlotPortMapping& slotPortMapping) {
+    if (slotPortMapping.portId != 0) {
+        LOG(ERROR) << "Port ID " << slotPortMapping.portId << " != 0 not supported by HIDL HAL";
     }
-    return out;
+    return slotPortMapping.physicalSlotId;
 }
 
 aidl::SimSlotStatus toAidl(const config::V1_0::SimSlotStatus& sst) {
diff --git a/radio/aidl/compat/libradiocompat/config/structs.h b/radio/aidl/compat/libradiocompat/config/structs.h
index b8a0385..6ea4e4a 100644
--- a/radio/aidl/compat/libradiocompat/config/structs.h
+++ b/radio/aidl/compat/libradiocompat/config/structs.h
@@ -23,8 +23,7 @@
 
 namespace android::hardware::radio::compat {
 
-hidl_vec<uint32_t>  //
-toHidl(const std::vector<aidl::android::hardware::radio::config::SlotPortMapping>& slotMap);
+uint32_t toHidl(const aidl::android::hardware::radio::config::SlotPortMapping& slotPortMapping);
 
 aidl::android::hardware::radio::config::SimSlotStatus  //
 toAidl(const config::V1_0::SimSlotStatus& sst);
diff --git a/radio/aidl/compat/libradiocompat/data/RadioData.cpp b/radio/aidl/compat/libradiocompat/data/RadioData.cpp
index cc6f526..d2f3687 100644
--- a/radio/aidl/compat/libradiocompat/data/RadioData.cpp
+++ b/radio/aidl/compat/libradiocompat/data/RadioData.cpp
@@ -31,12 +31,16 @@
 namespace aidlCommon = ::aidl::android::hardware::radio;
 constexpr auto ok = &ScopedAStatus::ok;
 
+std::shared_ptr<aidl::IRadioDataResponse> RadioData::respond() {
+    return mCallbackManager->response().dataCb();
+}
+
 ScopedAStatus RadioData::allocatePduSessionId(int32_t serial) {
     LOG_CALL << serial;
     if (mHal1_6) {
         mHal1_6->allocatePduSessionId(serial);
     } else {
-        respond().allocatePduSessionIdResponse(notSupported(serial), 0);
+        respond()->allocatePduSessionIdResponse(notSupported(serial), 0);
     }
     return ok();
 }
@@ -46,7 +50,7 @@
     if (mHal1_6) {
         mHal1_6->cancelHandover(serial, callId);
     } else {
-        respond().cancelHandoverResponse(notSupported(serial));
+        respond()->cancelHandoverResponse(notSupported(serial));
     }
     return ok();
 }
@@ -60,7 +64,11 @@
 
 ScopedAStatus RadioData::getDataCallList(int32_t serial) {
     LOG_CALL << serial;
-    mHal1_5->getDataCallList(serial);
+    if (mHal1_6) {
+        mHal1_6->getDataCallList_1_6(serial);
+    } else {
+        mHal1_5->getDataCallList(serial);
+    }
     return ok();
 }
 
@@ -69,7 +77,7 @@
     if (mHal1_6) {
         mHal1_6->getSlicingConfig(serial);
     } else {
-        respond().getSlicingConfigResponse(notSupported(serial), {});
+        respond()->getSlicingConfigResponse(notSupported(serial), {});
     }
     return ok();
 }
@@ -79,7 +87,7 @@
     if (mHal1_6) {
         mHal1_6->releasePduSessionId(serial, id);
     } else {
-        respond().releasePduSessionIdResponse(notSupported(serial));
+        respond()->releasePduSessionIdResponse(notSupported(serial));
     }
     return ok();
 }
@@ -109,7 +117,7 @@
     if (mHal1_6) {
         mHal1_6->setDataThrottling(serial, V1_6::DataThrottlingAction(dta), completionDurationMs);
     } else {
-        respond().setDataThrottlingResponse(notSupported(serial));
+        respond()->setDataThrottlingResponse(notSupported(serial));
     }
     return ok();
 }
@@ -121,16 +129,10 @@
 }
 
 ScopedAStatus RadioData::setResponseFunctions(
-        const std::shared_ptr<aidl::IRadioDataResponse>& dataResponse,
-        const std::shared_ptr<aidl::IRadioDataIndication>& dataIndication) {
-    LOG_CALL << dataResponse << ' ' << dataIndication;
-
-    CHECK(dataResponse);
-    CHECK(dataIndication);
-
-    mRadioResponse->setResponseFunction(dataResponse);
-    mRadioIndication->setResponseFunction(dataIndication);
-
+        const std::shared_ptr<aidl::IRadioDataResponse>& response,
+        const std::shared_ptr<aidl::IRadioDataIndication>& indication) {
+    LOG_CALL << response << ' ' << indication;
+    mCallbackManager->setResponseFunctions(response, indication);
     return ok();
 }
 
@@ -161,7 +163,7 @@
     if (mHal1_6) {
         mHal1_6->startHandover(serial, callId);
     } else {
-        respond().startHandoverResponse(notSupported(serial));
+        respond()->startHandoverResponse(notSupported(serial));
     }
     return ok();
 }
diff --git a/radio/aidl/compat/libradiocompat/data/RadioIndication-data.cpp b/radio/aidl/compat/libradiocompat/data/RadioIndication-data.cpp
index a680e56..602bb39 100644
--- a/radio/aidl/compat/libradiocompat/data/RadioIndication-data.cpp
+++ b/radio/aidl/compat/libradiocompat/data/RadioIndication-data.cpp
@@ -29,10 +29,13 @@
 namespace aidl = ::aidl::android::hardware::radio::data;
 
 void RadioIndication::setResponseFunction(std::shared_ptr<aidl::IRadioDataIndication> dataCb) {
-    CHECK(dataCb);
     mDataCb = dataCb;
 }
 
+std::shared_ptr<aidl::IRadioDataIndication> RadioIndication::dataCb() {
+    return mDataCb.get();
+}
+
 Return<void> RadioIndication::dataCallListChanged(V1_0::RadioIndicationType type,
                                                   const hidl_vec<V1_0::SetupDataCallResult>&) {
     LOG_CALL << type;
@@ -50,40 +53,42 @@
 Return<void> RadioIndication::dataCallListChanged_1_5(
         V1_0::RadioIndicationType type, const hidl_vec<V1_5::SetupDataCallResult>& dcList) {
     LOG_CALL << type;
-    CHECK_CB(mDataCb);
-    mDataCb->dataCallListChanged(toAidl(type), toAidl(dcList));
+    dataCb()->dataCallListChanged(toAidl(type), toAidl(dcList));
     return {};
 }
 
 Return<void> RadioIndication::dataCallListChanged_1_6(
         V1_0::RadioIndicationType type, const hidl_vec<V1_6::SetupDataCallResult>& dcList) {
     LOG_CALL << type;
-    CHECK_CB(mDataCb);
-    mDataCb->dataCallListChanged(toAidl(type), toAidl(dcList));
+    dataCb()->dataCallListChanged(toAidl(type), toAidl(dcList));
     return {};
 }
 
 Return<void> RadioIndication::keepaliveStatus(V1_0::RadioIndicationType type,
                                               const V1_1::KeepaliveStatus& status) {
     LOG_CALL << type;
-    CHECK_CB(mDataCb);
-    mDataCb->keepaliveStatus(toAidl(type), toAidl(status));
+    dataCb()->keepaliveStatus(toAidl(type), toAidl(status));
     return {};
 }
 
 Return<void> RadioIndication::pcoData(V1_0::RadioIndicationType type,
                                       const V1_0::PcoDataInfo& pco) {
     LOG_CALL << type;
-    CHECK_CB(mDataCb);
-    mDataCb->pcoData(toAidl(type), toAidl(pco));
+    dataCb()->pcoData(toAidl(type), toAidl(pco));
     return {};
 }
 
 Return<void> RadioIndication::unthrottleApn(V1_0::RadioIndicationType type,
                                             const hidl_string& apn) {
     LOG_CALL << type;
-    CHECK_CB(mDataCb);
-    mDataCb->unthrottleApn(toAidl(type), mContext->getDataProfile(apn));
+    dataCb()->unthrottleApn(toAidl(type), mContext->getDataProfile(apn));
+    return {};
+}
+
+Return<void> RadioIndication::slicingConfigChanged(V1_0::RadioIndicationType type,
+                                                   const V1_6::SlicingConfig& slicingConfig) {
+    LOG_CALL << type;
+    dataCb()->slicingConfigChanged(toAidl(type), toAidl(slicingConfig));
     return {};
 }
 
diff --git a/radio/aidl/compat/libradiocompat/data/RadioResponse-data.cpp b/radio/aidl/compat/libradiocompat/data/RadioResponse-data.cpp
index 171f692..0bfa2df 100644
--- a/radio/aidl/compat/libradiocompat/data/RadioResponse-data.cpp
+++ b/radio/aidl/compat/libradiocompat/data/RadioResponse-data.cpp
@@ -29,29 +29,29 @@
 namespace aidl = ::aidl::android::hardware::radio::data;
 
 void RadioResponse::setResponseFunction(std::shared_ptr<aidl::IRadioDataResponse> dataCb) {
-    CHECK(dataCb);
     mDataCb = dataCb;
 }
 
+std::shared_ptr<aidl::IRadioDataResponse> RadioResponse::dataCb() {
+    return mDataCb.get();
+}
+
 Return<void> RadioResponse::allocatePduSessionIdResponse(const V1_6::RadioResponseInfo& info,
                                                          int32_t id) {
     LOG_CALL << info.serial;
-    CHECK_CB(mDataCb);
-    mDataCb->allocatePduSessionIdResponse(toAidl(info), id);
+    dataCb()->allocatePduSessionIdResponse(toAidl(info), id);
     return {};
 }
 
 Return<void> RadioResponse::cancelHandoverResponse(const V1_6::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mDataCb);
-    mDataCb->cancelHandoverResponse(toAidl(info));
+    dataCb()->cancelHandoverResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::deactivateDataCallResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mDataCb);
-    mDataCb->deactivateDataCallResponse(toAidl(info));
+    dataCb()->deactivateDataCallResponse(toAidl(info));
     return {};
 }
 
@@ -73,8 +73,7 @@
         const V1_0::RadioResponseInfo& info,
         const hidl_vec<V1_5::SetupDataCallResult>& dcResponse) {
     LOG_CALL << info.serial;
-    CHECK_CB(mDataCb);
-    mDataCb->getDataCallListResponse(toAidl(info), toAidl(dcResponse));
+    dataCb()->getDataCallListResponse(toAidl(info), toAidl(dcResponse));
     return {};
 }
 
@@ -82,65 +81,56 @@
         const V1_6::RadioResponseInfo& info,
         const hidl_vec<V1_6::SetupDataCallResult>& dcResponse) {
     LOG_CALL << info.serial;
-    CHECK_CB(mDataCb);
-    mDataCb->getDataCallListResponse(toAidl(info), toAidl(dcResponse));
+    dataCb()->getDataCallListResponse(toAidl(info), toAidl(dcResponse));
     return {};
 }
 
 Return<void> RadioResponse::getSlicingConfigResponse(const V1_6::RadioResponseInfo& info,
                                                      const V1_6::SlicingConfig& slicingConfig) {
     LOG_CALL << info.serial;
-    CHECK_CB(mDataCb);
-    mDataCb->getSlicingConfigResponse(toAidl(info), toAidl(slicingConfig));
+    dataCb()->getSlicingConfigResponse(toAidl(info), toAidl(slicingConfig));
     return {};
 }
 
 Return<void> RadioResponse::releasePduSessionIdResponse(const V1_6::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mDataCb);
-    mDataCb->releasePduSessionIdResponse(toAidl(info));
+    dataCb()->releasePduSessionIdResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setDataAllowedResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mDataCb);
-    mDataCb->setDataAllowedResponse(toAidl(info));
+    dataCb()->setDataAllowedResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setDataProfileResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mDataCb);
-    mDataCb->setDataProfileResponse(toAidl(info));
+    dataCb()->setDataProfileResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setDataProfileResponse_1_5(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mDataCb);
-    mDataCb->setDataProfileResponse(toAidl(info));
+    dataCb()->setDataProfileResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setDataThrottlingResponse(const V1_6::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mDataCb);
-    mDataCb->setDataThrottlingResponse(toAidl(info));
+    dataCb()->setDataThrottlingResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setInitialAttachApnResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mDataCb);
-    mDataCb->setInitialAttachApnResponse(toAidl(info));
+    dataCb()->setInitialAttachApnResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setInitialAttachApnResponse_1_5(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mDataCb);
-    mDataCb->setInitialAttachApnResponse(toAidl(info));
+    dataCb()->setInitialAttachApnResponse(toAidl(info));
     return {};
 }
 
@@ -161,38 +151,33 @@
 Return<void> RadioResponse::setupDataCallResponse_1_5(const V1_0::RadioResponseInfo& info,
                                                       const V1_5::SetupDataCallResult& dcResponse) {
     LOG_CALL << info.serial;
-    CHECK_CB(mDataCb);
-    mDataCb->setupDataCallResponse(toAidl(info), toAidl(dcResponse));
+    dataCb()->setupDataCallResponse(toAidl(info), toAidl(dcResponse));
     return {};
 }
 
 Return<void> RadioResponse::setupDataCallResponse_1_6(const V1_6::RadioResponseInfo& info,
                                                       const V1_6::SetupDataCallResult& dcResponse) {
     LOG_CALL << info.serial;
-    CHECK_CB(mDataCb);
-    mDataCb->setupDataCallResponse(toAidl(info), toAidl(dcResponse));
+    dataCb()->setupDataCallResponse(toAidl(info), toAidl(dcResponse));
     return {};
 }
 
 Return<void> RadioResponse::startHandoverResponse(const V1_6::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mDataCb);
-    mDataCb->startHandoverResponse(toAidl(info));
+    dataCb()->startHandoverResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::startKeepaliveResponse(const V1_0::RadioResponseInfo& info,
                                                    const V1_1::KeepaliveStatus& status) {
     LOG_CALL << info.serial;
-    CHECK_CB(mDataCb);
-    mDataCb->startKeepaliveResponse(toAidl(info), toAidl(status));
+    dataCb()->startKeepaliveResponse(toAidl(info), toAidl(status));
     return {};
 }
 
 Return<void> RadioResponse::stopKeepaliveResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mDataCb);
-    mDataCb->stopKeepaliveResponse(toAidl(info));
+    dataCb()->stopKeepaliveResponse(toAidl(info));
     return {};
 }
 
diff --git a/radio/aidl/compat/libradiocompat/debug.h b/radio/aidl/compat/libradiocompat/debug.h
index 4158059..cb773bf 100644
--- a/radio/aidl/compat/libradiocompat/debug.h
+++ b/radio/aidl/compat/libradiocompat/debug.h
@@ -26,12 +26,6 @@
 #define LOG_CALL \
     if constexpr (debug::kSuperVerbose) LOG(VERBOSE) << (RADIO_MODULE ".") << __func__ << ' '
 
-#define CHECK_CB(field)                     \
-    if (!field) {                           \
-        LOG(WARNING) << "Callback not set"; \
-        return {};                          \
-    }
-
 }  // namespace debug
 
 inline std::ostream& operator<<(std::ostream& os, const V1_0::RadioIndicationType& type) {
diff --git a/radio/aidl/compat/libradiocompat/include/libradiocompat/CallbackManager.h b/radio/aidl/compat/libradiocompat/include/libradiocompat/CallbackManager.h
new file mode 100644
index 0000000..f1a7b49
--- /dev/null
+++ b/radio/aidl/compat/libradiocompat/include/libradiocompat/CallbackManager.h
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#pragma once
+
+#include "DriverContext.h"
+#include "RadioIndication.h"
+#include "RadioResponse.h"
+
+#include <android-base/logging.h>
+#include <android/hardware/radio/1.6/IRadio.h>
+
+#include <thread>
+
+namespace android::hardware::radio::compat {
+
+class CallbackManager {
+    sp<V1_5::IRadio> mHidlHal;
+    sp<RadioResponse> mRadioResponse;
+    sp<RadioIndication> mRadioIndication;
+
+    std::thread mDelayedSetterThread;
+    std::mutex mDelayedSetterGuard;
+    std::optional<std::chrono::time_point<std::chrono::steady_clock>> mDelayedSetterDeadline
+            GUARDED_BY(mDelayedSetterGuard);
+    std::condition_variable mDelayedSetterCv GUARDED_BY(mDelayedSetterGuard);
+    bool mDestroy GUARDED_BY(mDelayedSetterGuard) = false;
+
+    void setResponseFunctionsDelayed();
+    void delayedSetterThread();
+
+  public:
+    CallbackManager(std::shared_ptr<DriverContext> context, sp<V1_5::IRadio> hidlHal);
+    ~CallbackManager();
+
+    RadioResponse& response() const;
+
+    template <typename ResponseType, typename IndicationType>
+    void setResponseFunctions(const std::shared_ptr<ResponseType>& response,
+                              const std::shared_ptr<IndicationType>& indication) {
+        CHECK(response);
+        CHECK(indication);
+
+        mRadioResponse->setResponseFunction(response);
+        mRadioIndication->setResponseFunction(indication);
+        setResponseFunctionsDelayed();
+    }
+};
+
+}  // namespace android::hardware::radio::compat
diff --git a/radio/aidl/compat/libradiocompat/include/libradiocompat/GuaranteedCallback.h b/radio/aidl/compat/libradiocompat/include/libradiocompat/GuaranteedCallback.h
new file mode 100644
index 0000000..0b6ee11
--- /dev/null
+++ b/radio/aidl/compat/libradiocompat/include/libradiocompat/GuaranteedCallback.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#pragma once
+
+#include <android-base/logging.h>
+#include <android/binder_interface_utils.h>
+#include <utils/Mutex.h>
+
+namespace android::hardware::radio::compat {
+
+template <typename Interface, typename DefaultImplementation, bool isIndication = false>
+class GuaranteedCallback {
+    mutable std::mutex mCallbackGuard;
+    std::shared_ptr<Interface> mCallback GUARDED_BY(mCallbackGuard);
+
+  public:
+    GuaranteedCallback<Interface, DefaultImplementation, isIndication>& operator=(
+            const std::shared_ptr<Interface>& callback) {
+        CHECK(callback);
+        const std::lock_guard<std::mutex> lock(mCallbackGuard);
+        mCallback = callback;
+        return *this;
+    }
+
+    std::shared_ptr<Interface> get() {
+        if (mCallback) return mCallback;
+        const std::lock_guard<std::mutex> lock(mCallbackGuard);
+        if (mCallback) return mCallback;
+
+        LOG(isIndication ? WARNING : ERROR) << "Callback is not set";
+        return mCallback = ndk::SharedRefBase::make<DefaultImplementation>();
+    }
+
+    operator bool() const { return mCallback != nullptr; }
+};
+
+}  // namespace android::hardware::radio::compat
diff --git a/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioCompatBase.h b/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioCompatBase.h
index 21d7898..eb22fff 100644
--- a/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioCompatBase.h
+++ b/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioCompatBase.h
@@ -15,9 +15,8 @@
  */
 #pragma once
 
+#include "CallbackManager.h"
 #include "DriverContext.h"
-#include "RadioIndication.h"
-#include "RadioResponse.h"
 
 #include <android/hardware/radio/1.6/IRadio.h>
 
@@ -30,14 +29,11 @@
     sp<V1_5::IRadio> mHal1_5;
     sp<V1_6::IRadio> mHal1_6;
 
-    sp<RadioResponse> mRadioResponse;
-    sp<RadioIndication> mRadioIndication;
-
-    V1_6::IRadioResponse& respond();
+    std::shared_ptr<CallbackManager> mCallbackManager;
 
   public:
     RadioCompatBase(std::shared_ptr<DriverContext> context, sp<V1_5::IRadio> hidlHal,
-                    sp<RadioResponse> radioResponse, sp<RadioIndication> radioIndication);
+                    std::shared_ptr<CallbackManager> cbMgr);
 };
 
 }  // namespace android::hardware::radio::compat
diff --git a/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioConfig.h b/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioConfig.h
index 31ad207..bbfff61 100644
--- a/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioConfig.h
+++ b/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioConfig.h
@@ -15,6 +15,9 @@
  */
 #pragma once
 
+#include "RadioConfigIndication.h"
+#include "RadioConfigResponse.h"
+
 #include <aidl/android/hardware/radio/config/BnRadioConfig.h>
 #include <android/hardware/radio/config/1.2/IRadioConfigIndication.h>
 #include <android/hardware/radio/config/1.3/IRadioConfig.h>
@@ -30,11 +33,13 @@
  * fetch source implementation and publish resulting HAL instance.
  */
 class RadioConfig : public aidl::android::hardware::radio::config::BnRadioConfig {
-    sp<config::V1_1::IRadioConfig> mHal1_1;
-    sp<config::V1_3::IRadioConfig> mHal1_3;
+    const sp<config::V1_1::IRadioConfig> mHal1_1;
+    const sp<config::V1_3::IRadioConfig> mHal1_3;
 
-    sp<config::V1_3::IRadioConfigResponse> mRadioConfigResponse;
-    sp<config::V1_2::IRadioConfigIndication> mRadioConfigIndication;
+    const sp<RadioConfigResponse> mRadioConfigResponse;
+    const sp<RadioConfigIndication> mRadioConfigIndication;
+
+    std::shared_ptr<::aidl::android::hardware::radio::config::IRadioConfigResponse> respond();
 
     ::ndk::ScopedAStatus getHalDeviceCapabilities(int32_t serial) override;
     ::ndk::ScopedAStatus getNumOfLiveModems(int32_t serial) override;
@@ -52,8 +57,6 @@
             const std::vector<aidl::android::hardware::radio::config::SlotPortMapping>& slotMap)
             override;
 
-    config::V1_3::IRadioConfigResponse& respond();
-
   public:
     /**
      * Constructs AIDL IRadioConfig instance wrapping existing HIDL IRadioConfig instance.
diff --git a/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioConfigIndication.h b/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioConfigIndication.h
new file mode 100644
index 0000000..d256a87
--- /dev/null
+++ b/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioConfigIndication.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#pragma once
+
+#include "GuaranteedCallback.h"
+
+#include <aidl/android/hardware/radio/config/IRadioConfigIndication.h>
+#include <android/hardware/radio/config/1.2/IRadioConfigIndication.h>
+
+namespace android::hardware::radio::compat {
+
+class RadioConfigIndication : public config::V1_2::IRadioConfigIndication {
+    GuaranteedCallback<aidl::android::hardware::radio::config::IRadioConfigIndication,
+                       aidl::android::hardware::radio::config::IRadioConfigIndicationDefault, true>
+            mCallback;
+
+    Return<void> simSlotsStatusChanged(
+            V1_0::RadioIndicationType type,
+            const hidl_vec<config::V1_0::SimSlotStatus>& slotStatus) override;
+    Return<void> simSlotsStatusChanged_1_2(
+            V1_0::RadioIndicationType type,
+            const hidl_vec<config::V1_2::SimSlotStatus>& slotStatus) override;
+
+  public:
+    void setResponseFunction(
+            std::shared_ptr<aidl::android::hardware::radio::config::IRadioConfigIndication> cb);
+
+    std::shared_ptr<aidl::android::hardware::radio::config::IRadioConfigIndication> indicate();
+};
+
+}  // namespace android::hardware::radio::compat
diff --git a/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioConfigResponse.h b/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioConfigResponse.h
new file mode 100644
index 0000000..dc86da2
--- /dev/null
+++ b/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioConfigResponse.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#pragma once
+
+#include "GuaranteedCallback.h"
+
+#include <aidl/android/hardware/radio/config/IRadioConfigResponse.h>
+#include <android/hardware/radio/config/1.3/IRadioConfigResponse.h>
+
+namespace android::hardware::radio::compat {
+
+class RadioConfigResponse : public config::V1_3::IRadioConfigResponse {
+    GuaranteedCallback<aidl::android::hardware::radio::config::IRadioConfigResponse,
+                       aidl::android::hardware::radio::config::IRadioConfigResponseDefault>
+            mCallback;
+
+    Return<void> getSimSlotsStatusResponse(
+            const V1_0::RadioResponseInfo& info,
+            const hidl_vec<config::V1_0::SimSlotStatus>& slotStatus) override;
+    Return<void> setSimSlotsMappingResponse(const V1_0::RadioResponseInfo& info) override;
+    Return<void> getPhoneCapabilityResponse(
+            const V1_0::RadioResponseInfo& info,
+            const config::V1_1::PhoneCapability& phoneCapability) override;
+    Return<void> setPreferredDataModemResponse(const V1_0::RadioResponseInfo& info) override;
+    Return<void> setModemsConfigResponse(const V1_0::RadioResponseInfo& info) override;
+    Return<void> getModemsConfigResponse(const V1_0::RadioResponseInfo& info,
+                                         const config::V1_1::ModemsConfig& modemsConfig) override;
+    Return<void> getSimSlotsStatusResponse_1_2(
+            const V1_0::RadioResponseInfo& info,
+            const hidl_vec<config::V1_2::SimSlotStatus>& slotStatus) override;
+    Return<void> getHalDeviceCapabilitiesResponse(const V1_6::RadioResponseInfo& info,
+                                                  bool modemReducedFeatureSet1) override;
+
+  public:
+    void setResponseFunction(
+            std::shared_ptr<aidl::android::hardware::radio::config::IRadioConfigResponse> callback);
+
+    std::shared_ptr<aidl::android::hardware::radio::config::IRadioConfigResponse> respond();
+};
+
+}  // namespace android::hardware::radio::compat
diff --git a/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioData.h b/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioData.h
index ba8bb0a..c617ec2 100644
--- a/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioData.h
+++ b/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioData.h
@@ -22,6 +22,8 @@
 namespace android::hardware::radio::compat {
 
 class RadioData : public RadioCompatBase, public aidl::android::hardware::radio::data::BnRadioData {
+    std::shared_ptr<::aidl::android::hardware::radio::data::IRadioDataResponse> respond();
+
     ::ndk::ScopedAStatus allocatePduSessionId(int32_t serial) override;
     ::ndk::ScopedAStatus cancelHandover(int32_t serial, int32_t callId) override;
     ::ndk::ScopedAStatus deactivateDataCall(
diff --git a/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioIndication.h b/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioIndication.h
index 4d03063..6cfd59c 100644
--- a/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioIndication.h
+++ b/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioIndication.h
@@ -16,6 +16,7 @@
 #pragma once
 
 #include "DriverContext.h"
+#include "GuaranteedCallback.h"
 
 #include <aidl/android/hardware/radio/data/IRadioDataIndication.h>
 #include <aidl/android/hardware/radio/messaging/IRadioMessagingIndication.h>
@@ -30,13 +31,30 @@
 class RadioIndication : public V1_6::IRadioIndication {
     std::shared_ptr<DriverContext> mContext;
 
-    std::shared_ptr<::aidl::android::hardware::radio::data::IRadioDataIndication> mDataCb;
-    std::shared_ptr<::aidl::android::hardware::radio::messaging::IRadioMessagingIndication>
+    GuaranteedCallback<  //
+            ::aidl::android::hardware::radio::data::IRadioDataIndication,
+            ::aidl::android::hardware::radio::data::IRadioDataIndicationDefault, true>
+            mDataCb;
+    GuaranteedCallback<  //
+            ::aidl::android::hardware::radio::messaging::IRadioMessagingIndication,
+            ::aidl::android::hardware::radio::messaging::IRadioMessagingIndicationDefault, true>
             mMessagingCb;
-    std::shared_ptr<::aidl::android::hardware::radio::modem::IRadioModemIndication> mModemCb;
-    std::shared_ptr<::aidl::android::hardware::radio::network::IRadioNetworkIndication> mNetworkCb;
-    std::shared_ptr<::aidl::android::hardware::radio::sim::IRadioSimIndication> mSimCb;
-    std::shared_ptr<::aidl::android::hardware::radio::voice::IRadioVoiceIndication> mVoiceCb;
+    GuaranteedCallback<  //
+            ::aidl::android::hardware::radio::modem::IRadioModemIndication,
+            ::aidl::android::hardware::radio::modem::IRadioModemIndicationDefault, true>
+            mModemCb;
+    GuaranteedCallback<  //
+            ::aidl::android::hardware::radio::network::IRadioNetworkIndication,
+            ::aidl::android::hardware::radio::network::IRadioNetworkIndicationDefault, true>
+            mNetworkCb;
+    GuaranteedCallback<  //
+            ::aidl::android::hardware::radio::sim::IRadioSimIndication,
+            ::aidl::android::hardware::radio::sim::IRadioSimIndicationDefault, true>
+            mSimCb;
+    GuaranteedCallback<  //
+            ::aidl::android::hardware::radio::voice::IRadioVoiceIndication,
+            ::aidl::android::hardware::radio::voice::IRadioVoiceIndicationDefault, true>
+            mVoiceCb;
 
     // IRadioIndication @ 1.0
     Return<void> radioStateChanged(V1_0::RadioIndicationType type,
@@ -168,6 +186,8 @@
             V1_0::RadioIndicationType type,
             const hidl_vec<V1_6::SetupDataCallResult>& dcList) override;
     Return<void> unthrottleApn(V1_0::RadioIndicationType type, const hidl_string& apn) override;
+    Return<void> slicingConfigChanged(V1_0::RadioIndicationType type,
+                                      const V1_6::SlicingConfig& slicingConfig);
     Return<void> currentLinkCapacityEstimate_1_6(V1_0::RadioIndicationType type,
                                                  const V1_6::LinkCapacityEstimate& lce) override;
     Return<void> currentSignalStrength_1_6(V1_0::RadioIndicationType type,
@@ -200,6 +220,14 @@
             std::shared_ptr<::aidl::android::hardware::radio::sim::IRadioSimIndication> simCb);
     void setResponseFunction(
             std::shared_ptr<::aidl::android::hardware::radio::voice::IRadioVoiceIndication> voicCb);
+
+    std::shared_ptr<::aidl::android::hardware::radio::data::IRadioDataIndication> dataCb();
+    std::shared_ptr<::aidl::android::hardware::radio::messaging::IRadioMessagingIndication>
+    messagingCb();
+    std::shared_ptr<::aidl::android::hardware::radio::modem::IRadioModemIndication> modemCb();
+    std::shared_ptr<::aidl::android::hardware::radio::network::IRadioNetworkIndication> networkCb();
+    std::shared_ptr<::aidl::android::hardware::radio::sim::IRadioSimIndication> simCb();
+    std::shared_ptr<::aidl::android::hardware::radio::voice::IRadioVoiceIndication> voiceCb();
 };
 
 }  // namespace android::hardware::radio::compat
diff --git a/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioMessaging.h b/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioMessaging.h
index 0cd3381..419e9fb 100644
--- a/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioMessaging.h
+++ b/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioMessaging.h
@@ -23,6 +23,8 @@
 
 class RadioMessaging : public RadioCompatBase,
                        public aidl::android::hardware::radio::messaging::BnRadioMessaging {
+    std::shared_ptr<::aidl::android::hardware::radio::messaging::IRadioMessagingResponse> respond();
+
     ::ndk::ScopedAStatus acknowledgeIncomingGsmSmsWithPdu(int32_t serial, bool success,
                                                           const std::string& ackPdu) override;
     ::ndk::ScopedAStatus acknowledgeLastIncomingCdmaSms(
diff --git a/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioModem.h b/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioModem.h
index 666ff47..fdca124 100644
--- a/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioModem.h
+++ b/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioModem.h
@@ -23,6 +23,8 @@
 
 class RadioModem : public RadioCompatBase,
                    public aidl::android::hardware::radio::modem::BnRadioModem {
+    std::shared_ptr<::aidl::android::hardware::radio::modem::IRadioModemResponse> respond();
+
     ::ndk::ScopedAStatus enableModem(int32_t serial, bool on) override;
     ::ndk::ScopedAStatus getBasebandVersion(int32_t serial) override;
     ::ndk::ScopedAStatus getDeviceIdentity(int32_t serial) override;
diff --git a/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioNetwork.h b/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioNetwork.h
index 09ae240..1731b78 100644
--- a/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioNetwork.h
+++ b/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioNetwork.h
@@ -23,6 +23,8 @@
 
 class RadioNetwork : public RadioCompatBase,
                      public aidl::android::hardware::radio::network::BnRadioNetwork {
+    std::shared_ptr<::aidl::android::hardware::radio::network::IRadioNetworkResponse> respond();
+
     ::ndk::ScopedAStatus getAllowedNetworkTypesBitmap(int32_t serial) override;
     ::ndk::ScopedAStatus getAvailableBandModes(int32_t serial) override;
     ::ndk::ScopedAStatus getAvailableNetworks(int32_t serial) override;
@@ -39,9 +41,8 @@
     ::ndk::ScopedAStatus getVoiceRegistrationState(int32_t serial) override;
     ::ndk::ScopedAStatus isNrDualConnectivityEnabled(int32_t serial) override;
     ::ndk::ScopedAStatus responseAcknowledgement() override;
-    ::ndk::ScopedAStatus setAllowedNetworkTypesBitmap(
-            int32_t serial,
-            ::aidl::android::hardware::radio::RadioAccessFamily networkTypeBitmap) override;
+    ::ndk::ScopedAStatus setAllowedNetworkTypesBitmap(int32_t serial,
+                                                      int32_t networkTypeBitmap) override;
     ::ndk::ScopedAStatus setBandMode(
             int32_t serial, ::aidl::android::hardware::radio::network::RadioBandMode mode) override;
     ::ndk::ScopedAStatus setBarringPassword(int32_t serial, const std::string& facility,
@@ -51,9 +52,7 @@
             int32_t serial,
             ::aidl::android::hardware::radio::network::CdmaRoamingType type) override;
     ::ndk::ScopedAStatus setCellInfoListRate(int32_t serial, int32_t rate) override;
-    ::ndk::ScopedAStatus setIndicationFilter(
-            int32_t serial,
-            ::aidl::android::hardware::radio::network::IndicationFilter indicationFilter) override;
+    ::ndk::ScopedAStatus setIndicationFilter(int32_t serial, int32_t indicationFilter) override;
     ::ndk::ScopedAStatus setLinkCapacityReportingCriteria(
             int32_t serial, int32_t hysteresisMs, int32_t hysteresisDlKbps,
             int32_t hysteresisUlKbps, const std::vector<int32_t>& thresholdsDownlinkKbps,
diff --git a/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioResponse.h b/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioResponse.h
index 344864f..1f82dd1 100644
--- a/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioResponse.h
+++ b/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioResponse.h
@@ -16,6 +16,7 @@
 #pragma once
 
 #include "DriverContext.h"
+#include "GuaranteedCallback.h"
 
 #include <aidl/android/hardware/radio/data/IRadioDataResponse.h>
 #include <aidl/android/hardware/radio/messaging/IRadioMessagingResponse.h>
@@ -30,13 +31,24 @@
 class RadioResponse : public V1_6::IRadioResponse {
     std::shared_ptr<DriverContext> mContext;
 
-    std::shared_ptr<::aidl::android::hardware::radio::data::IRadioDataResponse> mDataCb;
-    std::shared_ptr<::aidl::android::hardware::radio::messaging::IRadioMessagingResponse>
+    GuaranteedCallback<::aidl::android::hardware::radio::data::IRadioDataResponse,
+                       ::aidl::android::hardware::radio::data::IRadioDataResponseDefault>
+            mDataCb;
+    GuaranteedCallback<::aidl::android::hardware::radio::messaging::IRadioMessagingResponse,
+                       ::aidl::android::hardware::radio::messaging::IRadioMessagingResponseDefault>
             mMessagingCb;
-    std::shared_ptr<::aidl::android::hardware::radio::modem::IRadioModemResponse> mModemCb;
-    std::shared_ptr<::aidl::android::hardware::radio::network::IRadioNetworkResponse> mNetworkCb;
-    std::shared_ptr<::aidl::android::hardware::radio::sim::IRadioSimResponse> mSimCb;
-    std::shared_ptr<::aidl::android::hardware::radio::voice::IRadioVoiceResponse> mVoiceCb;
+    GuaranteedCallback<::aidl::android::hardware::radio::modem::IRadioModemResponse,
+                       ::aidl::android::hardware::radio::modem::IRadioModemResponseDefault>
+            mModemCb;
+    GuaranteedCallback<::aidl::android::hardware::radio::network::IRadioNetworkResponse,
+                       ::aidl::android::hardware::radio::network::IRadioNetworkResponseDefault>
+            mNetworkCb;
+    GuaranteedCallback<::aidl::android::hardware::radio::sim::IRadioSimResponse,
+                       ::aidl::android::hardware::radio::sim::IRadioSimResponseDefault>
+            mSimCb;
+    GuaranteedCallback<::aidl::android::hardware::radio::voice::IRadioVoiceResponse,
+                       ::aidl::android::hardware::radio::voice::IRadioVoiceResponseDefault>
+            mVoiceCb;
 
     // IRadioResponse @ 1.0
     Return<void> getIccCardStatusResponse(const V1_0::RadioResponseInfo& info,
@@ -428,6 +440,14 @@
             std::shared_ptr<::aidl::android::hardware::radio::sim::IRadioSimResponse> simCb);
     void setResponseFunction(
             std::shared_ptr<::aidl::android::hardware::radio::voice::IRadioVoiceResponse> voiceCb);
+
+    std::shared_ptr<::aidl::android::hardware::radio::data::IRadioDataResponse> dataCb();
+    std::shared_ptr<::aidl::android::hardware::radio::messaging::IRadioMessagingResponse>
+    messagingCb();
+    std::shared_ptr<::aidl::android::hardware::radio::modem::IRadioModemResponse> modemCb();
+    std::shared_ptr<::aidl::android::hardware::radio::network::IRadioNetworkResponse> networkCb();
+    std::shared_ptr<::aidl::android::hardware::radio::sim::IRadioSimResponse> simCb();
+    std::shared_ptr<::aidl::android::hardware::radio::voice::IRadioVoiceResponse> voiceCb();
 };
 
 }  // namespace android::hardware::radio::compat
diff --git a/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioSim.h b/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioSim.h
index a6b77fd..84bb68b 100644
--- a/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioSim.h
+++ b/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioSim.h
@@ -22,6 +22,8 @@
 namespace android::hardware::radio::compat {
 
 class RadioSim : public RadioCompatBase, public aidl::android::hardware::radio::sim::BnRadioSim {
+    std::shared_ptr<::aidl::android::hardware::radio::sim::IRadioSimResponse> respond();
+
     ::ndk::ScopedAStatus areUiccApplicationsEnabled(int32_t serial) override;
     ::ndk::ScopedAStatus changeIccPin2ForApp(int32_t serial, const std::string& oldPin2,
                                              const std::string& newPin2,
diff --git a/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioVoice.h b/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioVoice.h
index 5bf93e0..a0e1e82 100644
--- a/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioVoice.h
+++ b/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioVoice.h
@@ -23,14 +23,15 @@
 
 class RadioVoice : public RadioCompatBase,
                    public aidl::android::hardware::radio::voice::BnRadioVoice {
+    std::shared_ptr<::aidl::android::hardware::radio::voice::IRadioVoiceResponse> respond();
+
     ::ndk::ScopedAStatus acceptCall(int32_t serial) override;
     ::ndk::ScopedAStatus conference(int32_t serial) override;
     ::ndk::ScopedAStatus dial(
             int32_t serial, const ::aidl::android::hardware::radio::voice::Dial& dialInfo) override;
     ::ndk::ScopedAStatus emergencyDial(
             int32_t serial, const ::aidl::android::hardware::radio::voice::Dial& dialInfo,
-            ::aidl::android::hardware::radio::voice::EmergencyServiceCategory categories,
-            const std::vector<std::string>& urns,
+            int32_t categories, const std::vector<std::string>& urns,
             ::aidl::android::hardware::radio::voice::EmergencyCallRouting routing,
             bool hasKnownUserIntentEmergency, bool isTesting) override;
     ::ndk::ScopedAStatus exitEmergencyCallbackMode(int32_t serial) override;
diff --git a/radio/aidl/compat/libradiocompat/messaging/RadioIndication-messaging.cpp b/radio/aidl/compat/libradiocompat/messaging/RadioIndication-messaging.cpp
index c7342b1..e5c33b3 100644
--- a/radio/aidl/compat/libradiocompat/messaging/RadioIndication-messaging.cpp
+++ b/radio/aidl/compat/libradiocompat/messaging/RadioIndication-messaging.cpp
@@ -27,67 +27,62 @@
 namespace aidl = ::aidl::android::hardware::radio::messaging;
 
 void RadioIndication::setResponseFunction(std::shared_ptr<aidl::IRadioMessagingIndication> rmiCb) {
-    CHECK(rmiCb);
     mMessagingCb = rmiCb;
 }
 
+std::shared_ptr<aidl::IRadioMessagingIndication> RadioIndication::messagingCb() {
+    return mMessagingCb.get();
+}
+
 Return<void> RadioIndication::cdmaNewSms(V1_0::RadioIndicationType type,
                                          const V1_0::CdmaSmsMessage& msg) {
     LOG_CALL << type;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->cdmaNewSms(toAidl(type), toAidl(msg));
+    messagingCb()->cdmaNewSms(toAidl(type), toAidl(msg));
     return {};
 }
 
 Return<void> RadioIndication::cdmaRuimSmsStorageFull(V1_0::RadioIndicationType type) {
     LOG_CALL << type;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->cdmaRuimSmsStorageFull(toAidl(type));
+    messagingCb()->cdmaRuimSmsStorageFull(toAidl(type));
     return {};
 }
 
 Return<void> RadioIndication::newBroadcastSms(V1_0::RadioIndicationType type,
                                               const hidl_vec<uint8_t>& data) {
     LOG_CALL << type;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->newBroadcastSms(toAidl(type), data);
+    messagingCb()->newBroadcastSms(toAidl(type), data);
     return {};
 }
 
 Return<void> RadioIndication::newSms(V1_0::RadioIndicationType type, const hidl_vec<uint8_t>& pdu) {
     LOG_CALL << type;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->newSms(toAidl(type), pdu);
+    messagingCb()->newSms(toAidl(type), pdu);
     return {};
 }
 
 Return<void> RadioIndication::newSmsOnSim(V1_0::RadioIndicationType type, int32_t recordNumber) {
     LOG_CALL << type;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->newSmsOnSim(toAidl(type), recordNumber);
+    messagingCb()->newSmsOnSim(toAidl(type), recordNumber);
     return {};
 }
 
 Return<void> RadioIndication::newSmsStatusReport(V1_0::RadioIndicationType type,
                                                  const hidl_vec<uint8_t>& pdu) {
     LOG_CALL << type;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->newSmsStatusReport(toAidl(type), pdu);
+    messagingCb()->newSmsStatusReport(toAidl(type), pdu);
     return {};
 }
 
 Return<void> RadioIndication::onUssd(V1_0::RadioIndicationType type, V1_0::UssdModeType modeType,
                                      const hidl_string& msg) {
     LOG_CALL << type;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->onUssd(toAidl(type), aidl::UssdModeType(modeType), msg);
+    messagingCb()->onUssd(toAidl(type), aidl::UssdModeType(modeType), msg);
     return {};
 }
 
 Return<void> RadioIndication::simSmsStorageFull(V1_0::RadioIndicationType type) {
     LOG_CALL << type;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->simSmsStorageFull(toAidl(type));
+    messagingCb()->simSmsStorageFull(toAidl(type));
     return {};
 }
 
diff --git a/radio/aidl/compat/libradiocompat/messaging/RadioMessaging.cpp b/radio/aidl/compat/libradiocompat/messaging/RadioMessaging.cpp
index c1a82b5..4d94e17 100644
--- a/radio/aidl/compat/libradiocompat/messaging/RadioMessaging.cpp
+++ b/radio/aidl/compat/libradiocompat/messaging/RadioMessaging.cpp
@@ -29,6 +29,10 @@
 namespace aidl = ::aidl::android::hardware::radio::messaging;
 constexpr auto ok = &ScopedAStatus::ok;
 
+std::shared_ptr<aidl::IRadioMessagingResponse> RadioMessaging::respond() {
+    return mCallbackManager->response().messagingCb();
+}
+
 ScopedAStatus RadioMessaging::acknowledgeIncomingGsmSmsWithPdu(  //
         int32_t serial, bool success, const std::string& ackPdu) {
     LOG_CALL << serial << ' ' << success << ' ' << ackPdu;
@@ -100,13 +104,21 @@
 
 ScopedAStatus RadioMessaging::sendCdmaSms(int32_t serial, const aidl::CdmaSmsMessage& sms) {
     LOG_CALL << serial;
-    mHal1_5->sendCdmaSms(serial, toHidl(sms));
+    if (mHal1_6) {
+        mHal1_6->sendCdmaSms_1_6(serial, toHidl(sms));
+    } else {
+        mHal1_5->sendCdmaSms(serial, toHidl(sms));
+    }
     return ok();
 }
 
 ScopedAStatus RadioMessaging::sendCdmaSmsExpectMore(int32_t serial, const aidl::CdmaSmsMessage& m) {
     LOG_CALL << serial;
-    mHal1_5->sendCdmaSmsExpectMore(serial, toHidl(m));
+    if (mHal1_6) {
+        mHal1_6->sendCdmaSmsExpectMore_1_6(serial, toHidl(m));
+    } else {
+        mHal1_5->sendCdmaSmsExpectMore(serial, toHidl(m));
+    }
     return ok();
 }
 
@@ -118,13 +130,21 @@
 
 ScopedAStatus RadioMessaging::sendSms(int32_t serial, const aidl::GsmSmsMessage& message) {
     LOG_CALL << serial;
-    mHal1_5->sendSms(serial, toHidl(message));
+    if (mHal1_6) {
+        mHal1_6->sendSms_1_6(serial, toHidl(message));
+    } else {
+        mHal1_5->sendSms(serial, toHidl(message));
+    }
     return ok();
 }
 
 ScopedAStatus RadioMessaging::sendSmsExpectMore(int32_t serial, const aidl::GsmSmsMessage& msg) {
     LOG_CALL << serial;
-    mHal1_5->sendSMSExpectMore(serial, toHidl(msg));
+    if (mHal1_6) {
+        mHal1_6->sendSmsExpectMore_1_6(serial, toHidl(msg));
+    } else {
+        mHal1_5->sendSMSExpectMore(serial, toHidl(msg));
+    }
     return ok();
 }
 
@@ -161,16 +181,10 @@
 }
 
 ScopedAStatus RadioMessaging::setResponseFunctions(
-        const std::shared_ptr<aidl::IRadioMessagingResponse>& messagingResponse,
-        const std::shared_ptr<aidl::IRadioMessagingIndication>& messagingIndication) {
-    LOG_CALL << messagingResponse << ' ' << messagingIndication;
-
-    CHECK(messagingResponse);
-    CHECK(messagingIndication);
-
-    mRadioResponse->setResponseFunction(messagingResponse);
-    mRadioIndication->setResponseFunction(messagingIndication);
-
+        const std::shared_ptr<aidl::IRadioMessagingResponse>& response,
+        const std::shared_ptr<aidl::IRadioMessagingIndication>& indication) {
+    LOG_CALL << response << ' ' << indication;
+    mCallbackManager->setResponseFunctions(response, indication);
     return ok();
 }
 
diff --git a/radio/aidl/compat/libradiocompat/messaging/RadioResponse-messaging.cpp b/radio/aidl/compat/libradiocompat/messaging/RadioResponse-messaging.cpp
index 379e463..24ad3d7 100644
--- a/radio/aidl/compat/libradiocompat/messaging/RadioResponse-messaging.cpp
+++ b/radio/aidl/compat/libradiocompat/messaging/RadioResponse-messaging.cpp
@@ -29,52 +29,49 @@
 namespace aidl = ::aidl::android::hardware::radio::messaging;
 
 void RadioResponse::setResponseFunction(std::shared_ptr<aidl::IRadioMessagingResponse> rmrCb) {
-    CHECK(rmrCb);
     mMessagingCb = rmrCb;
 }
 
+std::shared_ptr<aidl::IRadioMessagingResponse> RadioResponse::messagingCb() {
+    return mMessagingCb.get();
+}
+
 Return<void> RadioResponse::acknowledgeIncomingGsmSmsWithPduResponse(
         const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->acknowledgeIncomingGsmSmsWithPduResponse(toAidl(info));
+    messagingCb()->acknowledgeIncomingGsmSmsWithPduResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::acknowledgeLastIncomingCdmaSmsResponse(
         const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->acknowledgeLastIncomingCdmaSmsResponse(toAidl(info));
+    messagingCb()->acknowledgeLastIncomingCdmaSmsResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::acknowledgeLastIncomingGsmSmsResponse(
         const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->acknowledgeLastIncomingGsmSmsResponse(toAidl(info));
+    messagingCb()->acknowledgeLastIncomingGsmSmsResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::cancelPendingUssdResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->cancelPendingUssdResponse(toAidl(info));
+    messagingCb()->cancelPendingUssdResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::deleteSmsOnRuimResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->deleteSmsOnRuimResponse(toAidl(info));
+    messagingCb()->deleteSmsOnRuimResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::deleteSmsOnSimResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->deleteSmsOnSimResponse(toAidl(info));
+    messagingCb()->deleteSmsOnSimResponse(toAidl(info));
     return {};
 }
 
@@ -82,162 +79,141 @@
         const V1_0::RadioResponseInfo& info,
         const hidl_vec<V1_0::CdmaBroadcastSmsConfigInfo>& configs) {
     LOG_CALL << info.serial;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->getCdmaBroadcastConfigResponse(toAidl(info), toAidl(configs));
+    messagingCb()->getCdmaBroadcastConfigResponse(toAidl(info), toAidl(configs));
     return {};
 }
 
 Return<void> RadioResponse::getGsmBroadcastConfigResponse(
         const V1_0::RadioResponseInfo& info, const hidl_vec<V1_0::GsmBroadcastSmsConfigInfo>& cfg) {
     LOG_CALL << info.serial;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->getGsmBroadcastConfigResponse(toAidl(info), toAidl(cfg));
+    messagingCb()->getGsmBroadcastConfigResponse(toAidl(info), toAidl(cfg));
     return {};
 }
 
 Return<void> RadioResponse::getSmscAddressResponse(const V1_0::RadioResponseInfo& info,
                                                    const hidl_string& smsc) {
     LOG_CALL << info.serial;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->getSmscAddressResponse(toAidl(info), smsc);
+    messagingCb()->getSmscAddressResponse(toAidl(info), smsc);
     return {};
 }
 
 Return<void> RadioResponse::reportSmsMemoryStatusResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->reportSmsMemoryStatusResponse(toAidl(info));
+    messagingCb()->reportSmsMemoryStatusResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::sendCdmaSmsExpectMoreResponse(const V1_0::RadioResponseInfo& info,
                                                           const V1_0::SendSmsResult& sms) {
     LOG_CALL << info.serial;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->sendCdmaSmsExpectMoreResponse(toAidl(info), toAidl(sms));
+    messagingCb()->sendCdmaSmsExpectMoreResponse(toAidl(info), toAidl(sms));
     return {};
 }
 
 Return<void> RadioResponse::sendCdmaSmsExpectMoreResponse_1_6(const V1_6::RadioResponseInfo& info,
                                                               const V1_0::SendSmsResult& sms) {
     LOG_CALL << info.serial;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->sendCdmaSmsExpectMoreResponse(toAidl(info), toAidl(sms));
+    messagingCb()->sendCdmaSmsExpectMoreResponse(toAidl(info), toAidl(sms));
     return {};
 }
 
 Return<void> RadioResponse::sendCdmaSmsResponse(const V1_0::RadioResponseInfo& info,
                                                 const V1_0::SendSmsResult& sms) {
     LOG_CALL << info.serial;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->sendCdmaSmsResponse(toAidl(info), toAidl(sms));
+    messagingCb()->sendCdmaSmsResponse(toAidl(info), toAidl(sms));
     return {};
 }
 
 Return<void> RadioResponse::sendCdmaSmsResponse_1_6(const V1_6::RadioResponseInfo& info,
                                                     const V1_0::SendSmsResult& sms) {
     LOG_CALL << info.serial;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->sendCdmaSmsResponse(toAidl(info), toAidl(sms));
+    messagingCb()->sendCdmaSmsResponse(toAidl(info), toAidl(sms));
     return {};
 }
 
 Return<void> RadioResponse::sendImsSmsResponse(const V1_0::RadioResponseInfo& info,
                                                const V1_0::SendSmsResult& sms) {
     LOG_CALL << info.serial;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->sendImsSmsResponse(toAidl(info), toAidl(sms));
+    messagingCb()->sendImsSmsResponse(toAidl(info), toAidl(sms));
     return {};
 }
 
 Return<void> RadioResponse::sendSMSExpectMoreResponse(const V1_0::RadioResponseInfo& info,
                                                       const V1_0::SendSmsResult& sms) {
     LOG_CALL << info.serial;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->sendSmsExpectMoreResponse(toAidl(info), toAidl(sms));
+    messagingCb()->sendSmsExpectMoreResponse(toAidl(info), toAidl(sms));
     return {};
 }
 
 Return<void> RadioResponse::sendSmsExpectMoreResponse_1_6(const V1_6::RadioResponseInfo& info,
                                                           const V1_0::SendSmsResult& sms) {
     LOG_CALL << info.serial;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->sendSmsExpectMoreResponse(toAidl(info), toAidl(sms));
+    messagingCb()->sendSmsExpectMoreResponse(toAidl(info), toAidl(sms));
     return {};
 }
 
 Return<void> RadioResponse::sendSmsResponse(const V1_0::RadioResponseInfo& info,
                                             const V1_0::SendSmsResult& sms) {
     LOG_CALL << info.serial;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->sendSmsResponse(toAidl(info), toAidl(sms));
+    messagingCb()->sendSmsResponse(toAidl(info), toAidl(sms));
     return {};
 }
 
 Return<void> RadioResponse::sendSmsResponse_1_6(const V1_6::RadioResponseInfo& info,
                                                 const V1_0::SendSmsResult& sms) {
     LOG_CALL << info.serial;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->sendSmsResponse(toAidl(info), toAidl(sms));
+    messagingCb()->sendSmsResponse(toAidl(info), toAidl(sms));
     return {};
 }
 
 Return<void> RadioResponse::sendUssdResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->sendUssdResponse(toAidl(info));
+    messagingCb()->sendUssdResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setCdmaBroadcastActivationResponse(
         const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->setCdmaBroadcastActivationResponse(toAidl(info));
+    messagingCb()->setCdmaBroadcastActivationResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setCdmaBroadcastConfigResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->setCdmaBroadcastConfigResponse(toAidl(info));
+    messagingCb()->setCdmaBroadcastConfigResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setGsmBroadcastActivationResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->setGsmBroadcastActivationResponse(toAidl(info));
+    messagingCb()->setGsmBroadcastActivationResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setGsmBroadcastConfigResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->setGsmBroadcastConfigResponse(toAidl(info));
+    messagingCb()->setGsmBroadcastConfigResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setSmscAddressResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->setSmscAddressResponse(toAidl(info));
+    messagingCb()->setSmscAddressResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::writeSmsToRuimResponse(const V1_0::RadioResponseInfo& info,
                                                    uint32_t index) {
     LOG_CALL << info.serial << ' ' << index;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->writeSmsToRuimResponse(toAidl(info), index);
+    messagingCb()->writeSmsToRuimResponse(toAidl(info), index);
     return {};
 }
 
 Return<void> RadioResponse::writeSmsToSimResponse(const V1_0::RadioResponseInfo& info,
                                                   int32_t index) {
     LOG_CALL << info.serial << ' ' << index;
-    CHECK_CB(mMessagingCb);
-    mMessagingCb->writeSmsToSimResponse(toAidl(info), index);
+    messagingCb()->writeSmsToSimResponse(toAidl(info), index);
     return {};
 }
 
diff --git a/radio/aidl/compat/libradiocompat/modem/RadioIndication-modem.cpp b/radio/aidl/compat/libradiocompat/modem/RadioIndication-modem.cpp
index 8fc4da6..851c93b 100644
--- a/radio/aidl/compat/libradiocompat/modem/RadioIndication-modem.cpp
+++ b/radio/aidl/compat/libradiocompat/modem/RadioIndication-modem.cpp
@@ -29,44 +29,42 @@
 namespace aidl = ::aidl::android::hardware::radio::modem;
 
 void RadioIndication::setResponseFunction(std::shared_ptr<aidl::IRadioModemIndication> modemCb) {
-    CHECK(modemCb);
     mModemCb = modemCb;
 }
 
+std::shared_ptr<aidl::IRadioModemIndication> RadioIndication::modemCb() {
+    return mModemCb.get();
+}
+
 Return<void> RadioIndication::hardwareConfigChanged(V1_0::RadioIndicationType type,
                                                     const hidl_vec<V1_0::HardwareConfig>& configs) {
     LOG_CALL << type;
-    CHECK_CB(mModemCb);
-    mModemCb->hardwareConfigChanged(toAidl(type), toAidl(configs));
+    modemCb()->hardwareConfigChanged(toAidl(type), toAidl(configs));
     return {};
 }
 
 Return<void> RadioIndication::modemReset(V1_0::RadioIndicationType type, const hidl_string& reasn) {
     LOG_CALL << type;
-    CHECK_CB(mModemCb);
-    mModemCb->modemReset(toAidl(type), reasn);
+    modemCb()->modemReset(toAidl(type), reasn);
     return {};
 }
 
 Return<void> RadioIndication::radioCapabilityIndication(V1_0::RadioIndicationType type,
                                                         const V1_0::RadioCapability& rc) {
     LOG_CALL << type;
-    CHECK_CB(mModemCb);
-    mModemCb->radioCapabilityIndication(toAidl(type), toAidl(rc));
+    modemCb()->radioCapabilityIndication(toAidl(type), toAidl(rc));
     return {};
 }
 
 Return<void> RadioIndication::radioStateChanged(V1_0::RadioIndicationType t, V1_0::RadioState st) {
     LOG_CALL << t;
-    CHECK_CB(mModemCb);
-    mModemCb->radioStateChanged(toAidl(t), aidl::RadioState(st));
+    modemCb()->radioStateChanged(toAidl(t), aidl::RadioState(st));
     return {};
 }
 
 Return<void> RadioIndication::rilConnected(V1_0::RadioIndicationType type) {
     LOG_CALL << type;
-    CHECK_CB(mModemCb);
-    mModemCb->rilConnected(toAidl(type));
+    modemCb()->rilConnected(toAidl(type));
     return {};
 }
 
diff --git a/radio/aidl/compat/libradiocompat/modem/RadioModem.cpp b/radio/aidl/compat/libradiocompat/modem/RadioModem.cpp
index 660ae9f..d28b940 100644
--- a/radio/aidl/compat/libradiocompat/modem/RadioModem.cpp
+++ b/radio/aidl/compat/libradiocompat/modem/RadioModem.cpp
@@ -27,6 +27,10 @@
 namespace aidl = ::aidl::android::hardware::radio::modem;
 constexpr auto ok = &ScopedAStatus::ok;
 
+std::shared_ptr<aidl::IRadioModemResponse> RadioModem::respond() {
+    return mCallbackManager->response().modemCb();
+}
+
 ScopedAStatus RadioModem::enableModem(int32_t serial, bool on) {
     LOG_CALL << serial;
     mHal1_5->enableModem(serial, on);
@@ -129,16 +133,10 @@
 }
 
 ScopedAStatus RadioModem::setResponseFunctions(
-        const std::shared_ptr<aidl::IRadioModemResponse>& modemResponse,
-        const std::shared_ptr<aidl::IRadioModemIndication>& modemIndication) {
-    LOG_CALL << modemResponse << ' ' << modemIndication;
-
-    CHECK(modemResponse);
-    CHECK(modemIndication);
-
-    mRadioResponse->setResponseFunction(modemResponse);
-    mRadioIndication->setResponseFunction(modemIndication);
-
+        const std::shared_ptr<aidl::IRadioModemResponse>& response,
+        const std::shared_ptr<aidl::IRadioModemIndication>& indication) {
+    LOG_CALL << response << ' ' << indication;
+    mCallbackManager->setResponseFunctions(response, indication);
     return ok();
 }
 
diff --git a/radio/aidl/compat/libradiocompat/modem/RadioResponse-modem.cpp b/radio/aidl/compat/libradiocompat/modem/RadioResponse-modem.cpp
index 300627c..6e1a962 100644
--- a/radio/aidl/compat/libradiocompat/modem/RadioResponse-modem.cpp
+++ b/radio/aidl/compat/libradiocompat/modem/RadioResponse-modem.cpp
@@ -29,22 +29,23 @@
 namespace aidl = ::aidl::android::hardware::radio::modem;
 
 void RadioResponse::setResponseFunction(std::shared_ptr<aidl::IRadioModemResponse> modemCb) {
-    CHECK(modemCb);
     mModemCb = modemCb;
 }
 
+std::shared_ptr<aidl::IRadioModemResponse> RadioResponse::modemCb() {
+    return mModemCb.get();
+}
+
 Return<void> RadioResponse::enableModemResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mModemCb);
-    mModemCb->enableModemResponse(toAidl(info));
+    modemCb()->enableModemResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::getBasebandVersionResponse(const V1_0::RadioResponseInfo& info,
                                                        const hidl_string& version) {
     LOG_CALL << info.serial;
-    CHECK_CB(mModemCb);
-    mModemCb->getBasebandVersionResponse(toAidl(info), version);
+    modemCb()->getBasebandVersionResponse(toAidl(info), version);
     return {};
 }
 
@@ -52,112 +53,97 @@
         const V1_0::RadioResponseInfo& info, const hidl_string& imei, const hidl_string& imeisv,
         const hidl_string& esn, const hidl_string& meid) {
     LOG_CALL << info.serial;
-    CHECK_CB(mModemCb);
-    mModemCb->getDeviceIdentityResponse(toAidl(info), imei, imeisv, esn, meid);
+    modemCb()->getDeviceIdentityResponse(toAidl(info), imei, imeisv, esn, meid);
     return {};
 }
 
 Return<void> RadioResponse::getHardwareConfigResponse(
         const V1_0::RadioResponseInfo& info, const hidl_vec<V1_0::HardwareConfig>& config) {
     LOG_CALL << info.serial;
-    CHECK_CB(mModemCb);
-    mModemCb->getHardwareConfigResponse(toAidl(info), toAidl(config));
+    modemCb()->getHardwareConfigResponse(toAidl(info), toAidl(config));
     return {};
 }
 
 Return<void> RadioResponse::getModemActivityInfoResponse(
         const V1_0::RadioResponseInfo& info, const V1_0::ActivityStatsInfo& activityInfo) {
     LOG_CALL << info.serial;
-    CHECK_CB(mModemCb);
-    mModemCb->getModemActivityInfoResponse(toAidl(info), toAidl(activityInfo));
+    modemCb()->getModemActivityInfoResponse(toAidl(info), toAidl(activityInfo));
     return {};
 }
 
 Return<void> RadioResponse::getModemStackStatusResponse(const V1_0::RadioResponseInfo& info,
                                                         bool isEnabled) {
     LOG_CALL << info.serial;
-    CHECK_CB(mModemCb);
-    mModemCb->getModemStackStatusResponse(toAidl(info), isEnabled);
+    modemCb()->getModemStackStatusResponse(toAidl(info), isEnabled);
     return {};
 }
 
 Return<void> RadioResponse::getRadioCapabilityResponse(const V1_0::RadioResponseInfo& info,
                                                        const V1_0::RadioCapability& rc) {
     LOG_CALL << info.serial;
-    CHECK_CB(mModemCb);
-    mModemCb->getRadioCapabilityResponse(toAidl(info), toAidl(rc));
+    modemCb()->getRadioCapabilityResponse(toAidl(info), toAidl(rc));
     return {};
 }
 
 Return<void> RadioResponse::nvReadItemResponse(const V1_0::RadioResponseInfo& info,
                                                const hidl_string& result) {
     LOG_CALL << info.serial;
-    CHECK_CB(mModemCb);
-    mModemCb->nvReadItemResponse(toAidl(info), result);
+    modemCb()->nvReadItemResponse(toAidl(info), result);
     return {};
 }
 
 Return<void> RadioResponse::nvResetConfigResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mModemCb);
-    mModemCb->nvResetConfigResponse(toAidl(info));
+    modemCb()->nvResetConfigResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::nvWriteCdmaPrlResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mModemCb);
-    mModemCb->nvWriteCdmaPrlResponse(toAidl(info));
+    modemCb()->nvWriteCdmaPrlResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::nvWriteItemResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mModemCb);
-    mModemCb->nvWriteItemResponse(toAidl(info));
+    modemCb()->nvWriteItemResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::requestShutdownResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mModemCb);
-    mModemCb->requestShutdownResponse(toAidl(info));
+    modemCb()->requestShutdownResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::sendDeviceStateResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mModemCb);
-    mModemCb->sendDeviceStateResponse(toAidl(info));
+    modemCb()->sendDeviceStateResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setRadioCapabilityResponse(const V1_0::RadioResponseInfo& info,
                                                        const V1_0::RadioCapability& rc) {
     LOG_CALL << info.serial;
-    CHECK_CB(mModemCb);
-    mModemCb->setRadioCapabilityResponse(toAidl(info), toAidl(rc));
+    modemCb()->setRadioCapabilityResponse(toAidl(info), toAidl(rc));
     return {};
 }
 
 Return<void> RadioResponse::setRadioPowerResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mModemCb);
-    mModemCb->setRadioPowerResponse(toAidl(info));
+    modemCb()->setRadioPowerResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setRadioPowerResponse_1_5(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mModemCb);
-    mModemCb->setRadioPowerResponse(toAidl(info));
+    modemCb()->setRadioPowerResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setRadioPowerResponse_1_6(const V1_6::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mModemCb);
-    mModemCb->setRadioPowerResponse(toAidl(info));
+    modemCb()->setRadioPowerResponse(toAidl(info));
     return {};
 }
 
diff --git a/radio/aidl/compat/libradiocompat/modem/structs.cpp b/radio/aidl/compat/libradiocompat/modem/structs.cpp
index 53d5753..69e651b 100644
--- a/radio/aidl/compat/libradiocompat/modem/structs.cpp
+++ b/radio/aidl/compat/libradiocompat/modem/structs.cpp
@@ -25,7 +25,6 @@
 namespace android::hardware::radio::compat {
 
 using ::aidl::android::hardware::radio::AccessNetwork;
-using ::aidl::android::hardware::radio::RadioAccessFamily;
 using ::aidl::android::hardware::radio::RadioTechnology;
 namespace aidl = ::aidl::android::hardware::radio::modem;
 
@@ -40,7 +39,7 @@
     return {
             .session = capa.session,
             .phase = static_cast<int32_t>(capa.phase),
-            .raf = RadioAccessFamily(capa.raf),
+            .raf = static_cast<int32_t>(capa.raf),
             .logicalModemUuid = capa.logicalModemUuid,
             .status = static_cast<int32_t>(capa.status),
     };
diff --git a/radio/aidl/compat/libradiocompat/network/RadioIndication-network.cpp b/radio/aidl/compat/libradiocompat/network/RadioIndication-network.cpp
index 899b133..4eb99f7 100644
--- a/radio/aidl/compat/libradiocompat/network/RadioIndication-network.cpp
+++ b/radio/aidl/compat/libradiocompat/network/RadioIndication-network.cpp
@@ -30,23 +30,24 @@
 namespace aidl = ::aidl::android::hardware::radio::network;
 
 void RadioIndication::setResponseFunction(std::shared_ptr<aidl::IRadioNetworkIndication> netCb) {
-    CHECK(netCb);
     mNetworkCb = netCb;
 }
 
+std::shared_ptr<aidl::IRadioNetworkIndication> RadioIndication::networkCb() {
+    return mNetworkCb.get();
+}
+
 Return<void> RadioIndication::barringInfoChanged(V1_0::RadioIndicationType type,
                                                  const V1_5::CellIdentity& cellIdentity,
                                                  const hidl_vec<V1_5::BarringInfo>& barringInfos) {
     LOG_CALL << type;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->barringInfoChanged(toAidl(type), toAidl(cellIdentity), toAidl(barringInfos));
+    networkCb()->barringInfoChanged(toAidl(type), toAidl(cellIdentity), toAidl(barringInfos));
     return {};
 }
 
 Return<void> RadioIndication::cdmaPrlChanged(V1_0::RadioIndicationType type, int32_t version) {
     LOG_CALL << type;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->cdmaPrlChanged(toAidl(type), version);
+    networkCb()->cdmaPrlChanged(toAidl(type), version);
     return {};
 }
 
@@ -74,32 +75,28 @@
 Return<void> RadioIndication::cellInfoList_1_5(V1_0::RadioIndicationType type,
                                                const hidl_vec<V1_5::CellInfo>& records) {
     LOG_CALL << type;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->cellInfoList(toAidl(type), toAidl(records));
+    networkCb()->cellInfoList(toAidl(type), toAidl(records));
     return {};
 }
 
 Return<void> RadioIndication::cellInfoList_1_6(V1_0::RadioIndicationType type,
                                                const hidl_vec<V1_6::CellInfo>& records) {
     LOG_CALL << type;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->cellInfoList(toAidl(type), toAidl(records));
+    networkCb()->cellInfoList(toAidl(type), toAidl(records));
     return {};
 }
 
 Return<void> RadioIndication::currentLinkCapacityEstimate(V1_0::RadioIndicationType type,
                                                           const V1_2::LinkCapacityEstimate& lce) {
     LOG_CALL << type;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->currentLinkCapacityEstimate(toAidl(type), toAidl(lce));
+    networkCb()->currentLinkCapacityEstimate(toAidl(type), toAidl(lce));
     return {};
 }
 
 Return<void> RadioIndication::currentLinkCapacityEstimate_1_6(
         V1_0::RadioIndicationType type, const V1_6::LinkCapacityEstimate& lce) {
     LOG_CALL << type;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->currentLinkCapacityEstimate(toAidl(type), toAidl(lce));
+    networkCb()->currentLinkCapacityEstimate(toAidl(type), toAidl(lce));
     return {};
 }
 
@@ -113,16 +110,14 @@
 Return<void> RadioIndication::currentPhysicalChannelConfigs_1_4(
         V1_0::RadioIndicationType type, const hidl_vec<V1_4::PhysicalChannelConfig>& configs) {
     LOG_CALL << type;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->currentPhysicalChannelConfigs(toAidl(type), toAidl(configs));
+    networkCb()->currentPhysicalChannelConfigs(toAidl(type), toAidl(configs));
     return {};
 }
 
 Return<void> RadioIndication::currentPhysicalChannelConfigs_1_6(
         V1_0::RadioIndicationType type, const hidl_vec<V1_6::PhysicalChannelConfig>& configs) {
     LOG_CALL << type;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->currentPhysicalChannelConfigs(toAidl(type), toAidl(configs));
+    networkCb()->currentPhysicalChannelConfigs(toAidl(type), toAidl(configs));
     return {};
 }
 
@@ -143,23 +138,20 @@
 Return<void> RadioIndication::currentSignalStrength_1_4(
         V1_0::RadioIndicationType type, const V1_4::SignalStrength& signalStrength) {
     LOG_CALL << type;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->currentSignalStrength(toAidl(type), toAidl(signalStrength));
+    networkCb()->currentSignalStrength(toAidl(type), toAidl(signalStrength));
     return {};
 }
 
 Return<void> RadioIndication::currentSignalStrength_1_6(
         V1_0::RadioIndicationType type, const V1_6::SignalStrength& signalStrength) {
     LOG_CALL << type;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->currentSignalStrength(toAidl(type), toAidl(signalStrength));
+    networkCb()->currentSignalStrength(toAidl(type), toAidl(signalStrength));
     return {};
 }
 
 Return<void> RadioIndication::imsNetworkStateChanged(V1_0::RadioIndicationType type) {
     LOG_CALL << type;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->imsNetworkStateChanged(toAidl(type));
+    networkCb()->imsNetworkStateChanged(toAidl(type));
     return {};
 }
 
@@ -187,31 +179,27 @@
 Return<void> RadioIndication::networkScanResult_1_5(V1_0::RadioIndicationType type,
                                                     const V1_5::NetworkScanResult& result) {
     LOG_CALL << type;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->networkScanResult(toAidl(type), toAidl(result));
+    networkCb()->networkScanResult(toAidl(type), toAidl(result));
     return {};
 }
 
 Return<void> RadioIndication::networkScanResult_1_6(V1_0::RadioIndicationType type,
                                                     const V1_6::NetworkScanResult& result) {
     LOG_CALL << type;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->networkScanResult(toAidl(type), toAidl(result));
+    networkCb()->networkScanResult(toAidl(type), toAidl(result));
     return {};
 }
 
 Return<void> RadioIndication::networkStateChanged(V1_0::RadioIndicationType type) {
     LOG_CALL << type;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->networkStateChanged(toAidl(type));
+    networkCb()->networkStateChanged(toAidl(type));
     return {};
 }
 
 Return<void> RadioIndication::nitzTimeReceived(V1_0::RadioIndicationType type,
                                                const hidl_string& nitzTime, uint64_t receivedTime) {
     LOG_CALL << type;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->nitzTimeReceived(toAidl(type), nitzTime, receivedTime, 0);
+    networkCb()->nitzTimeReceived(toAidl(type), nitzTime, receivedTime, 0);
     return {};
 }
 
@@ -220,33 +208,29 @@
         const hidl_string& chosenPlmn, hidl_bitfield<V1_5::Domain> domain, int32_t causeCode,
         int32_t additionalCauseCode) {
     LOG_CALL << type;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->registrationFailed(toAidl(type), toAidl(cellIdentity), chosenPlmn,
-                                   aidl::Domain(domain), causeCode, additionalCauseCode);
+    networkCb()->registrationFailed(toAidl(type), toAidl(cellIdentity), chosenPlmn, domain,
+                                    causeCode, additionalCauseCode);
     return {};
 }
 
 Return<void> RadioIndication::restrictedStateChanged(V1_0::RadioIndicationType type,
                                                      V1_0::PhoneRestrictedState state) {
     LOG_CALL << type;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->restrictedStateChanged(toAidl(type), aidl::PhoneRestrictedState(state));
+    networkCb()->restrictedStateChanged(toAidl(type), aidl::PhoneRestrictedState(state));
     return {};
 }
 
 Return<void> RadioIndication::suppSvcNotify(V1_0::RadioIndicationType type,
                                             const V1_0::SuppSvcNotification& suppSvc) {
     LOG_CALL << type;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->suppSvcNotify(toAidl(type), toAidl(suppSvc));
+    networkCb()->suppSvcNotify(toAidl(type), toAidl(suppSvc));
     return {};
 }
 
 Return<void> RadioIndication::voiceRadioTechChanged(V1_0::RadioIndicationType type,
                                                     V1_0::RadioTechnology rat) {
     LOG_CALL << type;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->voiceRadioTechChanged(toAidl(type), RadioTechnology(rat));
+    networkCb()->voiceRadioTechChanged(toAidl(type), RadioTechnology(rat));
     return {};
 }
 
diff --git a/radio/aidl/compat/libradiocompat/network/RadioNetwork.cpp b/radio/aidl/compat/libradiocompat/network/RadioNetwork.cpp
index 5fa1cf5..22b9ede 100644
--- a/radio/aidl/compat/libradiocompat/network/RadioNetwork.cpp
+++ b/radio/aidl/compat/libradiocompat/network/RadioNetwork.cpp
@@ -28,11 +28,14 @@
 namespace android::hardware::radio::compat {
 
 using ::aidl::android::hardware::radio::AccessNetwork;
-using ::aidl::android::hardware::radio::RadioAccessFamily;
 using ::ndk::ScopedAStatus;
 namespace aidl = ::aidl::android::hardware::radio::network;
 constexpr auto ok = &ScopedAStatus::ok;
 
+std::shared_ptr<aidl::IRadioNetworkResponse> RadioNetwork::respond() {
+    return mCallbackManager->response().networkCb();
+}
+
 ScopedAStatus RadioNetwork::getAllowedNetworkTypesBitmap(int32_t serial) {
     LOG_CALL << serial;
     if (mHal1_6) {
@@ -69,13 +72,21 @@
 
 ScopedAStatus RadioNetwork::getCellInfoList(int32_t serial) {
     LOG_CALL << serial;
-    mHal1_5->getCellInfoList(serial);
+    if (mHal1_6) {
+        mHal1_6->getCellInfoList_1_6(serial);
+    } else {
+        mHal1_5->getCellInfoList(serial);
+    }
     return ok();
 }
 
 ScopedAStatus RadioNetwork::getDataRegistrationState(int32_t serial) {
     LOG_CALL << serial;
-    mHal1_5->getDataRegistrationState(serial);
+    if (mHal1_6) {
+        mHal1_6->getDataRegistrationState_1_6(serial);
+    } else {
+        mHal1_5->getDataRegistrationState_1_5(serial);
+    }
     return ok();
 }
 
@@ -99,7 +110,11 @@
 
 ScopedAStatus RadioNetwork::getSignalStrength(int32_t serial) {
     LOG_CALL << serial;
-    mHal1_5->getSignalStrength(serial);
+    if (mHal1_6) {
+        mHal1_6->getSignalStrength_1_6(serial);
+    } else {
+        mHal1_5->getSignalStrength_1_4(serial);
+    }
     return ok();
 }
 
@@ -108,7 +123,7 @@
     if (mHal1_6) {
         mHal1_6->getSystemSelectionChannels(serial);
     } else {
-        respond().getSystemSelectionChannelsResponse(notSupported(serial), {});
+        respond()->getSystemSelectionChannelsResponse(notSupported(serial), {});
     }
     return ok();
 }
@@ -121,7 +136,11 @@
 
 ScopedAStatus RadioNetwork::getVoiceRegistrationState(int32_t serial) {
     LOG_CALL << serial;
-    mHal1_5->getVoiceRegistrationState(serial);
+    if (mHal1_6) {
+        mHal1_6->getVoiceRegistrationState_1_6(serial);
+    } else {
+        mHal1_5->getVoiceRegistrationState_1_5(serial);
+    }
     return ok();
 }
 
@@ -130,7 +149,7 @@
     if (mHal1_6) {
         mHal1_6->isNrDualConnectivityEnabled(serial);
     } else {
-        respond().isNrDualConnectivityEnabledResponse(notSupported(serial), false);
+        respond()->isNrDualConnectivityEnabledResponse(notSupported(serial), false);
     }
     return ok();
 }
@@ -141,7 +160,7 @@
     return ok();
 }
 
-ScopedAStatus RadioNetwork::setAllowedNetworkTypesBitmap(int32_t serial, RadioAccessFamily ntype) {
+ScopedAStatus RadioNetwork::setAllowedNetworkTypesBitmap(int32_t serial, int32_t ntype) {
     LOG_CALL << serial;
     const auto raf = toHidlBitfield<V1_4::RadioAccessFamily>(ntype);
     if (mHal1_6) {
@@ -177,9 +196,9 @@
     return ok();
 }
 
-ScopedAStatus RadioNetwork::setIndicationFilter(int32_t serial, aidl::IndicationFilter indFilter) {
+ScopedAStatus RadioNetwork::setIndicationFilter(int32_t serial, int32_t indFilter) {
     LOG_CALL << serial;
-    mHal1_5->setIndicationFilter(serial, toHidlBitfield<V1_0::IndicationFilter>(indFilter));
+    mHal1_5->setIndicationFilter_1_5(serial, toHidlBitfield<V1_5::IndicationFilter>(indFilter));
     return ok();
 }
 
@@ -188,9 +207,9 @@
         const std::vector<int32_t>& thrDownlinkKbps, const std::vector<int32_t>& thrUplinkKbps,
         AccessNetwork accessNetwork) {
     LOG_CALL << serial;
-    mHal1_5->setLinkCapacityReportingCriteria(  //
+    mHal1_5->setLinkCapacityReportingCriteria_1_5(  //
             serial, hysteresisMs, hysteresisDlKbps, hysteresisUlKbps, thrDownlinkKbps,
-            thrUplinkKbps, V1_2::AccessNetwork(accessNetwork));
+            thrUplinkKbps, V1_5::AccessNetwork(accessNetwork));
     return ok();
 }
 
@@ -219,29 +238,29 @@
     if (mHal1_6) {
         mHal1_6->setNrDualConnectivityState(serial, V1_6::NrDualConnectivityState(st));
     } else {
-        respond().setNrDualConnectivityStateResponse(notSupported(serial));
+        respond()->setNrDualConnectivityStateResponse(notSupported(serial));
     }
     return ok();
 }
 
 ScopedAStatus RadioNetwork::setResponseFunctions(
-        const std::shared_ptr<aidl::IRadioNetworkResponse>& networkResponse,
-        const std::shared_ptr<aidl::IRadioNetworkIndication>& networkIndication) {
-    LOG_CALL << networkResponse << ' ' << networkIndication;
-
-    CHECK(networkResponse);
-    CHECK(networkIndication);
-
-    mRadioResponse->setResponseFunction(networkResponse);
-    mRadioIndication->setResponseFunction(networkIndication);
-
+        const std::shared_ptr<aidl::IRadioNetworkResponse>& response,
+        const std::shared_ptr<aidl::IRadioNetworkIndication>& indication) {
+    LOG_CALL << response << ' ' << indication;
+    mCallbackManager->setResponseFunctions(response, indication);
     return ok();
 }
 
 ScopedAStatus RadioNetwork::setSignalStrengthReportingCriteria(
         int32_t serial, const std::vector<aidl::SignalThresholdInfo>& infos) {
     LOG_CALL << serial;
-    // TODO(b/203699028): how about other infos?
+    if (infos.size() == 0) {
+        LOG(ERROR) << "Threshold info array is empty - dropping setSignalStrengthReportingCriteria";
+        return ok();
+    }
+    if (infos.size() > 1) {
+        LOG(WARNING) << "Multi-element reporting criteria are not supported with HIDL HAL";
+    }
     mHal1_5->setSignalStrengthReportingCriteria_1_5(serial, toHidl(infos[0]),
                                                     V1_5::AccessNetwork(infos[0].ran));
     return ok();
@@ -278,18 +297,17 @@
     return ok();
 }
 
-// TODO(b/210498497): is there a cleaner way to send a response back to Android, even though these
-// methods must never be called?
-ScopedAStatus RadioNetwork::setUsageSetting(
-        int32_t ser, ::aidl::android::hardware::radio::network::UsageSetting) {
-    LOG_CALL << ser;
+ScopedAStatus RadioNetwork::setUsageSetting(int32_t serial, aidl::UsageSetting) {
+    LOG_CALL << serial;
     LOG(ERROR) << "setUsageSetting is unsupported by HIDL HALs";
+    respond()->setUsageSettingResponse(notSupported(serial));
     return ok();
 }
 
-ScopedAStatus RadioNetwork::getUsageSetting(int32_t ser) {
-    LOG_CALL << ser;
+ScopedAStatus RadioNetwork::getUsageSetting(int32_t serial) {
+    LOG_CALL << serial;
     LOG(ERROR) << "getUsageSetting is unsupported by HIDL HALs";
+    respond()->getUsageSettingResponse(notSupported(serial), {});  // {} = neither voice nor data
     return ok();
 }
 
diff --git a/radio/aidl/compat/libradiocompat/network/RadioResponse-network.cpp b/radio/aidl/compat/libradiocompat/network/RadioResponse-network.cpp
index 81f7775..5a98eb2 100644
--- a/radio/aidl/compat/libradiocompat/network/RadioResponse-network.cpp
+++ b/radio/aidl/compat/libradiocompat/network/RadioResponse-network.cpp
@@ -27,32 +27,30 @@
 
 namespace android::hardware::radio::compat {
 
-using ::aidl::android::hardware::radio::RadioAccessFamily;
 using ::aidl::android::hardware::radio::RadioTechnology;
 using ::aidl::android::hardware::radio::RadioTechnologyFamily;
 namespace aidl = ::aidl::android::hardware::radio::network;
 
 void RadioResponse::setResponseFunction(std::shared_ptr<aidl::IRadioNetworkResponse> netCb) {
-    CHECK(netCb);
     mNetworkCb = netCb;
 }
 
+std::shared_ptr<aidl::IRadioNetworkResponse> RadioResponse::networkCb() {
+    return mNetworkCb.get();
+}
+
 Return<void> RadioResponse::getAllowedNetworkTypesBitmapResponse(
         const V1_6::RadioResponseInfo& info,
         hidl_bitfield<V1_4::RadioAccessFamily> networkTypeBitmap) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->getAllowedNetworkTypesBitmapResponse(toAidl(info),
-                                                     RadioAccessFamily(networkTypeBitmap));
+    networkCb()->getAllowedNetworkTypesBitmapResponse(toAidl(info), networkTypeBitmap);
     return {};
 }
 
 Return<void> RadioResponse::getPreferredNetworkTypeResponse(const V1_0::RadioResponseInfo& info,
                                                             V1_0::PreferredNetworkType nwType) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->getAllowedNetworkTypesBitmapResponse(  //
-            toAidl(info), RadioAccessFamily(getRafFromNetworkType(nwType)));
+    networkCb()->getAllowedNetworkTypesBitmapResponse(toAidl(info), getRafFromNetworkType(nwType));
     return {};
 }
 
@@ -66,16 +64,14 @@
 Return<void> RadioResponse::getAvailableBandModesResponse(
         const V1_0::RadioResponseInfo& info, const hidl_vec<V1_0::RadioBandMode>& bandModes) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->getAvailableBandModesResponse(toAidl(info), toAidl(bandModes));
+    networkCb()->getAvailableBandModesResponse(toAidl(info), toAidl(bandModes));
     return {};
 }
 
 Return<void> RadioResponse::getAvailableNetworksResponse(
         const V1_0::RadioResponseInfo& info, const hidl_vec<V1_0::OperatorInfo>& networkInfos) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->getAvailableNetworksResponse(toAidl(info), toAidl(networkInfos));
+    networkCb()->getAvailableNetworksResponse(toAidl(info), toAidl(networkInfos));
     return {};
 }
 
@@ -83,16 +79,14 @@
         const V1_0::RadioResponseInfo& info, const V1_5::CellIdentity& cellIdentity,
         const hidl_vec<V1_5::BarringInfo>& barringInfos) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->getBarringInfoResponse(toAidl(info), toAidl(cellIdentity), toAidl(barringInfos));
+    networkCb()->getBarringInfoResponse(toAidl(info), toAidl(cellIdentity), toAidl(barringInfos));
     return {};
 }
 
 Return<void> RadioResponse::getCdmaRoamingPreferenceResponse(const V1_0::RadioResponseInfo& info,
                                                              V1_0::CdmaRoamingType type) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->getCdmaRoamingPreferenceResponse(toAidl(info), aidl::CdmaRoamingType(type));
+    networkCb()->getCdmaRoamingPreferenceResponse(toAidl(info), aidl::CdmaRoamingType(type));
     return {};
 }
 
@@ -120,16 +114,14 @@
 Return<void> RadioResponse::getCellInfoListResponse_1_5(const V1_0::RadioResponseInfo& info,
                                                         const hidl_vec<V1_5::CellInfo>& cellInfo) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->getCellInfoListResponse(toAidl(info), toAidl(cellInfo));
+    networkCb()->getCellInfoListResponse(toAidl(info), toAidl(cellInfo));
     return {};
 }
 
 Return<void> RadioResponse::getCellInfoListResponse_1_6(const V1_6::RadioResponseInfo& info,
                                                         const hidl_vec<V1_6::CellInfo>& cellInfo) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->getCellInfoListResponse(toAidl(info), toAidl(cellInfo));
+    networkCb()->getCellInfoListResponse(toAidl(info), toAidl(cellInfo));
     return {};
 }
 
@@ -157,25 +149,22 @@
 Return<void> RadioResponse::getDataRegistrationStateResponse_1_5(
         const V1_0::RadioResponseInfo& info, const V1_5::RegStateResult& dataRegResponse) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->getDataRegistrationStateResponse(toAidl(info), toAidl(dataRegResponse));
+    networkCb()->getDataRegistrationStateResponse(toAidl(info), toAidl(dataRegResponse));
     return {};
 }
 
 Return<void> RadioResponse::getDataRegistrationStateResponse_1_6(
         const V1_6::RadioResponseInfo& info, const V1_6::RegStateResult& dataRegResponse) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->getDataRegistrationStateResponse(toAidl(info), toAidl(dataRegResponse));
+    networkCb()->getDataRegistrationStateResponse(toAidl(info), toAidl(dataRegResponse));
     return {};
 }
 
 Return<void> RadioResponse::getImsRegistrationStateResponse(  //
         const V1_0::RadioResponseInfo& info, bool isRegd, V1_0::RadioTechnologyFamily ratFamily) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->getImsRegistrationStateResponse(toAidl(info), isRegd,
-                                                RadioTechnologyFamily(ratFamily));
+    networkCb()->getImsRegistrationStateResponse(toAidl(info), isRegd,
+                                                 RadioTechnologyFamily(ratFamily));
     return {};
 }
 
@@ -189,8 +178,7 @@
 Return<void> RadioResponse::getNetworkSelectionModeResponse(const V1_0::RadioResponseInfo& info,
                                                             bool manual) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->getNetworkSelectionModeResponse(toAidl(info), manual);
+    networkCb()->getNetworkSelectionModeResponse(toAidl(info), manual);
     return {};
 }
 
@@ -198,8 +186,7 @@
         const V1_0::RadioResponseInfo& info, const hidl_string& longName,
         const hidl_string& shortName, const hidl_string& numeric) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->getOperatorResponse(toAidl(info), longName, shortName, numeric);
+    networkCb()->getOperatorResponse(toAidl(info), longName, shortName, numeric);
     return {};
 }
 
@@ -220,16 +207,14 @@
 Return<void> RadioResponse::getSignalStrengthResponse_1_4(
         const V1_0::RadioResponseInfo& info, const V1_4::SignalStrength& signalStrength) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->getSignalStrengthResponse(toAidl(info), toAidl(signalStrength));
+    networkCb()->getSignalStrengthResponse(toAidl(info), toAidl(signalStrength));
     return {};
 }
 
 Return<void> RadioResponse::getSignalStrengthResponse_1_6(
         const V1_6::RadioResponseInfo& info, const V1_6::SignalStrength& signalStrength) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->getSignalStrengthResponse(toAidl(info), toAidl(signalStrength));
+    networkCb()->getSignalStrengthResponse(toAidl(info), toAidl(signalStrength));
     return {};
 }
 
@@ -237,16 +222,14 @@
         const V1_6::RadioResponseInfo& info,
         const hidl_vec<V1_5::RadioAccessSpecifier>& specifiers) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->getSystemSelectionChannelsResponse(toAidl(info), toAidl(specifiers));
+    networkCb()->getSystemSelectionChannelsResponse(toAidl(info), toAidl(specifiers));
     return {};
 }
 
 Return<void> RadioResponse::getVoiceRadioTechnologyResponse(const V1_0::RadioResponseInfo& info,
                                                             V1_0::RadioTechnology rat) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->getVoiceRadioTechnologyResponse(toAidl(info), RadioTechnology(rat));
+    networkCb()->getVoiceRadioTechnologyResponse(toAidl(info), RadioTechnology(rat));
     return {};
 }
 
@@ -267,24 +250,21 @@
 Return<void> RadioResponse::getVoiceRegistrationStateResponse_1_5(
         const V1_0::RadioResponseInfo& info, const V1_5::RegStateResult& voiceRegResponse) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->getVoiceRegistrationStateResponse(toAidl(info), toAidl(voiceRegResponse));
+    networkCb()->getVoiceRegistrationStateResponse(toAidl(info), toAidl(voiceRegResponse));
     return {};
 }
 
 Return<void> RadioResponse::getVoiceRegistrationStateResponse_1_6(
         const V1_6::RadioResponseInfo& info, const V1_6::RegStateResult& voiceRegResponse) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->getVoiceRegistrationStateResponse(toAidl(info), toAidl(voiceRegResponse));
+    networkCb()->getVoiceRegistrationStateResponse(toAidl(info), toAidl(voiceRegResponse));
     return {};
 }
 
 Return<void> RadioResponse::isNrDualConnectivityEnabledResponse(const V1_6::RadioResponseInfo& info,
                                                                 bool isEnabled) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->isNrDualConnectivityEnabledResponse(toAidl(info), isEnabled);
+    networkCb()->isNrDualConnectivityEnabledResponse(toAidl(info), isEnabled);
     return {};
 }
 
@@ -297,15 +277,13 @@
 
 Return<void> RadioResponse::setAllowedNetworkTypesBitmapResponse(const V1_6::RadioResponseInfo& i) {
     LOG_CALL << i.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->setAllowedNetworkTypesBitmapResponse(toAidl(i));
+    networkCb()->setAllowedNetworkTypesBitmapResponse(toAidl(i));
     return {};
 }
 
 Return<void> RadioResponse::setPreferredNetworkTypeResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->setAllowedNetworkTypesBitmapResponse(toAidl(info));
+    networkCb()->setAllowedNetworkTypesBitmapResponse(toAidl(info));
     return {};
 }
 
@@ -318,174 +296,151 @@
 
 Return<void> RadioResponse::setBandModeResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->setBandModeResponse(toAidl(info));
+    networkCb()->setBandModeResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setBarringPasswordResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->setBarringPasswordResponse(toAidl(info));
+    networkCb()->setBarringPasswordResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setCdmaRoamingPreferenceResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->setCdmaRoamingPreferenceResponse(toAidl(info));
+    networkCb()->setCdmaRoamingPreferenceResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setCellInfoListRateResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->setCellInfoListRateResponse(toAidl(info));
+    networkCb()->setCellInfoListRateResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setIndicationFilterResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->setIndicationFilterResponse(toAidl(info));
+    networkCb()->setIndicationFilterResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setIndicationFilterResponse_1_5(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->setIndicationFilterResponse(toAidl(info));
+    networkCb()->setIndicationFilterResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setLinkCapacityReportingCriteriaResponse(
         const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->setLinkCapacityReportingCriteriaResponse(toAidl(info));
+    networkCb()->setLinkCapacityReportingCriteriaResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setLinkCapacityReportingCriteriaResponse_1_5(
         const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->setLinkCapacityReportingCriteriaResponse(toAidl(info));
+    networkCb()->setLinkCapacityReportingCriteriaResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setLocationUpdatesResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->setLocationUpdatesResponse(toAidl(info));
+    networkCb()->setLocationUpdatesResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setNetworkSelectionModeAutomaticResponse(
         const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->setNetworkSelectionModeAutomaticResponse(toAidl(info));
+    networkCb()->setNetworkSelectionModeAutomaticResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setNetworkSelectionModeManualResponse(
         const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->setNetworkSelectionModeManualResponse(toAidl(info));
+    networkCb()->setNetworkSelectionModeManualResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setNetworkSelectionModeManualResponse_1_5(
         const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->setNetworkSelectionModeManualResponse(toAidl(info));
+    networkCb()->setNetworkSelectionModeManualResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setNrDualConnectivityStateResponse(
         const V1_6::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->setNrDualConnectivityStateResponse(toAidl(info));
+    networkCb()->setNrDualConnectivityStateResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setSignalStrengthReportingCriteriaResponse(
         const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->setSignalStrengthReportingCriteriaResponse(toAidl(info));
+    networkCb()->setSignalStrengthReportingCriteriaResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setSignalStrengthReportingCriteriaResponse_1_5(
         const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->setSignalStrengthReportingCriteriaResponse(toAidl(info));
+    networkCb()->setSignalStrengthReportingCriteriaResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setSuppServiceNotificationsResponse(
         const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->setSuppServiceNotificationsResponse(toAidl(info));
+    networkCb()->setSuppServiceNotificationsResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setSystemSelectionChannelsResponse(
         const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->setSystemSelectionChannelsResponse(toAidl(info));
+    networkCb()->setSystemSelectionChannelsResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setSystemSelectionChannelsResponse_1_5(
         const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->setSystemSelectionChannelsResponse(toAidl(info));
+    networkCb()->setSystemSelectionChannelsResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::startNetworkScanResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->startNetworkScanResponse(toAidl(info));
+    networkCb()->startNetworkScanResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::startNetworkScanResponse_1_4(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->startNetworkScanResponse(toAidl(info));
+    networkCb()->startNetworkScanResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::startNetworkScanResponse_1_5(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->startNetworkScanResponse(toAidl(info));
+    networkCb()->startNetworkScanResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::stopNetworkScanResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->stopNetworkScanResponse(toAidl(info));
+    networkCb()->stopNetworkScanResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::supplyNetworkDepersonalizationResponse(
         const V1_0::RadioResponseInfo& info, int32_t remainingRetries) {
     LOG_CALL << info.serial;
-    CHECK_CB(mNetworkCb);
-    mNetworkCb->supplyNetworkDepersonalizationResponse(toAidl(info), remainingRetries);
+    networkCb()->supplyNetworkDepersonalizationResponse(toAidl(info), remainingRetries);
     return {};
 }
 
diff --git a/radio/aidl/compat/libradiocompat/sim/RadioIndication-sim.cpp b/radio/aidl/compat/libradiocompat/sim/RadioIndication-sim.cpp
index 6b906c6..3938e00 100644
--- a/radio/aidl/compat/libradiocompat/sim/RadioIndication-sim.cpp
+++ b/radio/aidl/compat/libradiocompat/sim/RadioIndication-sim.cpp
@@ -29,29 +29,29 @@
 namespace aidl = ::aidl::android::hardware::radio::sim;
 
 void RadioIndication::setResponseFunction(std::shared_ptr<aidl::IRadioSimIndication> simCb) {
-    CHECK(simCb);
     mSimCb = simCb;
 }
 
+std::shared_ptr<aidl::IRadioSimIndication> RadioIndication::simCb() {
+    return mSimCb.get();
+}
+
 Return<void> RadioIndication::carrierInfoForImsiEncryption(V1_0::RadioIndicationType type) {
     LOG_CALL << type;
-    CHECK_CB(mSimCb);
-    mSimCb->carrierInfoForImsiEncryption(toAidl(type));
+    simCb()->carrierInfoForImsiEncryption(toAidl(type));
     return {};
 }
 
 Return<void> RadioIndication::cdmaSubscriptionSourceChanged(
         V1_0::RadioIndicationType type, V1_0::CdmaSubscriptionSource cdmaSource) {
     LOG_CALL << type;
-    CHECK_CB(mSimCb);
-    mSimCb->cdmaSubscriptionSourceChanged(toAidl(type), aidl::CdmaSubscriptionSource(cdmaSource));
+    simCb()->cdmaSubscriptionSourceChanged(toAidl(type), aidl::CdmaSubscriptionSource(cdmaSource));
     return {};
 }
 
 Return<void> RadioIndication::simPhonebookChanged(V1_0::RadioIndicationType type) {
     LOG_CALL << type;
-    CHECK_CB(mSimCb);
-    mSimCb->simPhonebookChanged(toAidl(type));
+    simCb()->simPhonebookChanged(toAidl(type));
     return {};
 }
 
@@ -59,62 +59,54 @@
         V1_0::RadioIndicationType type, V1_6::PbReceivedStatus status,
         const hidl_vec<V1_6::PhonebookRecordInfo>& rec) {
     LOG_CALL << type;
-    CHECK_CB(mSimCb);
-    mSimCb->simPhonebookRecordsReceived(toAidl(type), aidl::PbReceivedStatus(status), toAidl(rec));
+    simCb()->simPhonebookRecordsReceived(toAidl(type), aidl::PbReceivedStatus(status), toAidl(rec));
     return {};
 }
 
 Return<void> RadioIndication::simRefresh(V1_0::RadioIndicationType type,
                                          const V1_0::SimRefreshResult& refreshResult) {
     LOG_CALL << type;
-    CHECK_CB(mSimCb);
-    mSimCb->simRefresh(toAidl(type), toAidl(refreshResult));
+    simCb()->simRefresh(toAidl(type), toAidl(refreshResult));
     return {};
 }
 
 Return<void> RadioIndication::simStatusChanged(V1_0::RadioIndicationType type) {
     LOG_CALL << type;
-    CHECK_CB(mSimCb);
-    mSimCb->simStatusChanged(toAidl(type));
+    simCb()->simStatusChanged(toAidl(type));
     return {};
 }
 
 Return<void> RadioIndication::stkEventNotify(V1_0::RadioIndicationType type,
                                              const hidl_string& cmd) {
     LOG_CALL << type;
-    CHECK_CB(mSimCb);
-    mSimCb->stkEventNotify(toAidl(type), cmd);
+    simCb()->stkEventNotify(toAidl(type), cmd);
     return {};
 }
 
 Return<void> RadioIndication::stkProactiveCommand(V1_0::RadioIndicationType type,
                                                   const hidl_string& cmd) {
     LOG_CALL << type;
-    CHECK_CB(mSimCb);
-    mSimCb->stkProactiveCommand(toAidl(type), cmd);
+    simCb()->stkProactiveCommand(toAidl(type), cmd);
     return {};
 }
 
 Return<void> RadioIndication::stkSessionEnd(V1_0::RadioIndicationType type) {
     LOG_CALL << type;
-    CHECK_CB(mSimCb);
-    mSimCb->stkSessionEnd(toAidl(type));
+    simCb()->stkSessionEnd(toAidl(type));
     return {};
 }
 
 Return<void> RadioIndication::subscriptionStatusChanged(V1_0::RadioIndicationType type,
                                                         bool activate) {
     LOG_CALL << type;
-    CHECK_CB(mSimCb);
-    mSimCb->subscriptionStatusChanged(toAidl(type), activate);
+    simCb()->subscriptionStatusChanged(toAidl(type), activate);
     return {};
 }
 
 Return<void> RadioIndication::uiccApplicationsEnablementChanged(V1_0::RadioIndicationType type,
                                                                 bool enabled) {
     LOG_CALL << type;
-    CHECK_CB(mSimCb);
-    mSimCb->uiccApplicationsEnablementChanged(toAidl(type), enabled);
+    simCb()->uiccApplicationsEnablementChanged(toAidl(type), enabled);
     return {};
 }
 
diff --git a/radio/aidl/compat/libradiocompat/sim/RadioResponse-sim.cpp b/radio/aidl/compat/libradiocompat/sim/RadioResponse-sim.cpp
index 2dfbc50..3ad9130 100644
--- a/radio/aidl/compat/libradiocompat/sim/RadioResponse-sim.cpp
+++ b/radio/aidl/compat/libradiocompat/sim/RadioResponse-sim.cpp
@@ -29,48 +29,46 @@
 namespace aidl = ::aidl::android::hardware::radio::sim;
 
 void RadioResponse::setResponseFunction(std::shared_ptr<aidl::IRadioSimResponse> simCb) {
-    CHECK(simCb);
     mSimCb = simCb;
 }
 
+std::shared_ptr<aidl::IRadioSimResponse> RadioResponse::simCb() {
+    return mSimCb.get();
+}
+
 Return<void> RadioResponse::areUiccApplicationsEnabledResponse(const V1_0::RadioResponseInfo& info,
                                                                bool enabled) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->areUiccApplicationsEnabledResponse(toAidl(info), enabled);
+    simCb()->areUiccApplicationsEnabledResponse(toAidl(info), enabled);
     return {};
 }
 
 Return<void> RadioResponse::changeIccPin2ForAppResponse(const V1_0::RadioResponseInfo& info,
                                                         int32_t remainingRetries) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->changeIccPin2ForAppResponse(toAidl(info), remainingRetries);
+    simCb()->changeIccPin2ForAppResponse(toAidl(info), remainingRetries);
     return {};
 }
 
 Return<void> RadioResponse::changeIccPinForAppResponse(const V1_0::RadioResponseInfo& info,
                                                        int32_t remainingRetries) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->changeIccPinForAppResponse(toAidl(info), remainingRetries);
+    simCb()->changeIccPinForAppResponse(toAidl(info), remainingRetries);
     return {};
 }
 
 Return<void> RadioResponse::enableUiccApplicationsResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->enableUiccApplicationsResponse(toAidl(info));
+    simCb()->enableUiccApplicationsResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::getAllowedCarriersResponse(  //
         const V1_0::RadioResponseInfo& info, bool allAllowed, const V1_0::CarrierRestrictions& cr) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
     aidl::CarrierRestrictions aidlCr = toAidl(cr);
     if (allAllowed) aidlCr = {};
-    mSimCb->getAllowedCarriersResponse(toAidl(info), aidlCr, {});
+    simCb()->getAllowedCarriersResponse(toAidl(info), aidlCr, {});
     return {};
 }
 
@@ -78,9 +76,8 @@
         const V1_0::RadioResponseInfo& info, const V1_4::CarrierRestrictionsWithPriority& carriers,
         V1_4::SimLockMultiSimPolicy multiSimPolicy) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->getAllowedCarriersResponse(toAidl(info), toAidl(carriers),
-                                       aidl::SimLockMultiSimPolicy(multiSimPolicy));
+    simCb()->getAllowedCarriersResponse(toAidl(info), toAidl(carriers),
+                                        aidl::SimLockMultiSimPolicy(multiSimPolicy));
     return {};
 }
 
@@ -88,133 +85,116 @@
         const V1_0::RadioResponseInfo& info, const hidl_string& mdn, const hidl_string& hSid,
         const hidl_string& hNid, const hidl_string& min, const hidl_string& prl) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->getCdmaSubscriptionResponse(toAidl(info), mdn, hSid, hNid, min, prl);
+    simCb()->getCdmaSubscriptionResponse(toAidl(info), mdn, hSid, hNid, min, prl);
     return {};
 }
 
 Return<void> RadioResponse::getCdmaSubscriptionSourceResponse(const V1_0::RadioResponseInfo& info,
                                                               V1_0::CdmaSubscriptionSource s) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->getCdmaSubscriptionSourceResponse(toAidl(info), aidl::CdmaSubscriptionSource(s));
+    simCb()->getCdmaSubscriptionSourceResponse(toAidl(info), aidl::CdmaSubscriptionSource(s));
     return {};
 }
 
 Return<void> RadioResponse::getFacilityLockForAppResponse(const V1_0::RadioResponseInfo& info,
                                                           int32_t response) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->getFacilityLockForAppResponse(toAidl(info), response);
+    simCb()->getFacilityLockForAppResponse(toAidl(info), response);
     return {};
 }
 
 Return<void> RadioResponse::getIccCardStatusResponse(const V1_0::RadioResponseInfo& info,
                                                      const V1_0::CardStatus& cardStatus) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->getIccCardStatusResponse(toAidl(info), toAidl(cardStatus));
+    simCb()->getIccCardStatusResponse(toAidl(info), toAidl(cardStatus));
     return {};
 }
 
 Return<void> RadioResponse::getIccCardStatusResponse_1_2(const V1_0::RadioResponseInfo& info,
                                                          const V1_2::CardStatus& cardStatus) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->getIccCardStatusResponse(toAidl(info), toAidl(cardStatus));
+    simCb()->getIccCardStatusResponse(toAidl(info), toAidl(cardStatus));
     return {};
 }
 
 Return<void> RadioResponse::getIccCardStatusResponse_1_4(const V1_0::RadioResponseInfo& info,
                                                          const V1_4::CardStatus& cardStatus) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->getIccCardStatusResponse(toAidl(info), toAidl(cardStatus));
+    simCb()->getIccCardStatusResponse(toAidl(info), toAidl(cardStatus));
     return {};
 }
 
 Return<void> RadioResponse::getIccCardStatusResponse_1_5(const V1_0::RadioResponseInfo& info,
                                                          const V1_5::CardStatus& cardStatus) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->getIccCardStatusResponse(toAidl(info), toAidl(cardStatus));
+    simCb()->getIccCardStatusResponse(toAidl(info), toAidl(cardStatus));
     return {};
 }
 
 Return<void> RadioResponse::getIMSIForAppResponse(const V1_0::RadioResponseInfo& info,
                                                   const hidl_string& imsi) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->getImsiForAppResponse(toAidl(info), imsi);
+    simCb()->getImsiForAppResponse(toAidl(info), imsi);
     return {};
 }
 
 Return<void> RadioResponse::getSimPhonebookCapacityResponse(
         const V1_6::RadioResponseInfo& info, const V1_6::PhonebookCapacity& capacity) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->getSimPhonebookCapacityResponse(toAidl(info), toAidl(capacity));
+    simCb()->getSimPhonebookCapacityResponse(toAidl(info), toAidl(capacity));
     return {};
 }
 
 Return<void> RadioResponse::getSimPhonebookRecordsResponse(const V1_6::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->getSimPhonebookRecordsResponse(toAidl(info));
+    simCb()->getSimPhonebookRecordsResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::iccCloseLogicalChannelResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->iccCloseLogicalChannelResponse(toAidl(info));
+    simCb()->iccCloseLogicalChannelResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::iccIOForAppResponse(const V1_0::RadioResponseInfo& info,
                                                 const V1_0::IccIoResult& iccIo) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->iccIoForAppResponse(toAidl(info), toAidl(iccIo));
+    simCb()->iccIoForAppResponse(toAidl(info), toAidl(iccIo));
     return {};
 }
 
 Return<void> RadioResponse::iccOpenLogicalChannelResponse(  //
         const V1_0::RadioResponseInfo& info, int32_t chanId, const hidl_vec<int8_t>& selectResp) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->iccOpenLogicalChannelResponse(toAidl(info), chanId, toAidl(selectResp));
+    simCb()->iccOpenLogicalChannelResponse(toAidl(info), chanId, toAidl(selectResp));
     return {};
 }
 
 Return<void> RadioResponse::iccTransmitApduBasicChannelResponse(const V1_0::RadioResponseInfo& info,
                                                                 const V1_0::IccIoResult& result) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->iccTransmitApduBasicChannelResponse(toAidl(info), toAidl(result));
+    simCb()->iccTransmitApduBasicChannelResponse(toAidl(info), toAidl(result));
     return {};
 }
 
 Return<void> RadioResponse::iccTransmitApduLogicalChannelResponse(
         const V1_0::RadioResponseInfo& info, const V1_0::IccIoResult& result) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->iccTransmitApduLogicalChannelResponse(toAidl(info), toAidl(result));
+    simCb()->iccTransmitApduLogicalChannelResponse(toAidl(info), toAidl(result));
     return {};
 }
 
 Return<void> RadioResponse::reportStkServiceIsRunningResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->reportStkServiceIsRunningResponse(toAidl(info));
+    simCb()->reportStkServiceIsRunningResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::requestIccSimAuthenticationResponse(const V1_0::RadioResponseInfo& info,
                                                                 const V1_0::IccIoResult& result) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->requestIccSimAuthenticationResponse(toAidl(info), toAidl(result));
+    simCb()->requestIccSimAuthenticationResponse(toAidl(info), toAidl(result));
     return {};
 }
 
@@ -228,121 +208,105 @@
 Return<void> RadioResponse::sendEnvelopeResponse(const V1_0::RadioResponseInfo& info,
                                                  const hidl_string& commandResponse) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->sendEnvelopeResponse(toAidl(info), commandResponse);
+    simCb()->sendEnvelopeResponse(toAidl(info), commandResponse);
     return {};
 }
 
 Return<void> RadioResponse::sendEnvelopeWithStatusResponse(const V1_0::RadioResponseInfo& info,
                                                            const V1_0::IccIoResult& iccIo) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->sendEnvelopeWithStatusResponse(toAidl(info), toAidl(iccIo));
+    simCb()->sendEnvelopeWithStatusResponse(toAidl(info), toAidl(iccIo));
     return {};
 }
 
 Return<void> RadioResponse::sendTerminalResponseToSimResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->sendTerminalResponseToSimResponse(toAidl(info));
+    simCb()->sendTerminalResponseToSimResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setAllowedCarriersResponse(const V1_0::RadioResponseInfo& info,
                                                        int32_t numAllowed) {
     LOG_CALL << info.serial << ' ' << numAllowed;
-    CHECK_CB(mSimCb);
-    mSimCb->setAllowedCarriersResponse(toAidl(info));
+    simCb()->setAllowedCarriersResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setAllowedCarriersResponse_1_4(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->setAllowedCarriersResponse(toAidl(info));
+    simCb()->setAllowedCarriersResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setCarrierInfoForImsiEncryptionResponse(
         const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->setCarrierInfoForImsiEncryptionResponse(toAidl(info));
+    simCb()->setCarrierInfoForImsiEncryptionResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setCdmaSubscriptionSourceResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->setCdmaSubscriptionSourceResponse(toAidl(info));
+    simCb()->setCdmaSubscriptionSourceResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setFacilityLockForAppResponse(const V1_0::RadioResponseInfo& info,
                                                           int32_t retry) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->setFacilityLockForAppResponse(toAidl(info), retry);
+    simCb()->setFacilityLockForAppResponse(toAidl(info), retry);
     return {};
 }
 
 Return<void> RadioResponse::setSimCardPowerResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->setSimCardPowerResponse(toAidl(info));
+    simCb()->setSimCardPowerResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setSimCardPowerResponse_1_1(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->setSimCardPowerResponse(toAidl(info));
+    simCb()->setSimCardPowerResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setSimCardPowerResponse_1_6(const V1_6::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->setSimCardPowerResponse(toAidl(info));
+    simCb()->setSimCardPowerResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setUiccSubscriptionResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->setUiccSubscriptionResponse(toAidl(info));
+    simCb()->setUiccSubscriptionResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::supplyIccPin2ForAppResponse(const V1_0::RadioResponseInfo& info,
                                                         int32_t remainingRetries) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->supplyIccPin2ForAppResponse(toAidl(info), remainingRetries);
+    simCb()->supplyIccPin2ForAppResponse(toAidl(info), remainingRetries);
     return {};
 }
 
 Return<void> RadioResponse::supplyIccPinForAppResponse(const V1_0::RadioResponseInfo& info,
                                                        int32_t remainingRetries) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->supplyIccPinForAppResponse(toAidl(info), remainingRetries);
+    simCb()->supplyIccPinForAppResponse(toAidl(info), remainingRetries);
     return {};
 }
 
 Return<void> RadioResponse::supplyIccPuk2ForAppResponse(const V1_0::RadioResponseInfo& info,
                                                         int32_t remainingRetries) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->supplyIccPuk2ForAppResponse(toAidl(info), remainingRetries);
+    simCb()->supplyIccPuk2ForAppResponse(toAidl(info), remainingRetries);
     return {};
 }
 
 Return<void> RadioResponse::supplyIccPukForAppResponse(const V1_0::RadioResponseInfo& info,
                                                        int32_t remainingRetries) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->supplyIccPukForAppResponse(toAidl(info), remainingRetries);
+    simCb()->supplyIccPukForAppResponse(toAidl(info), remainingRetries);
     return {};
 }
 
@@ -350,16 +314,14 @@
                                                                V1_5::PersoSubstate persoType,
                                                                int32_t rRet) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->supplySimDepersonalizationResponse(toAidl(info), aidl::PersoSubstate(persoType), rRet);
+    simCb()->supplySimDepersonalizationResponse(toAidl(info), aidl::PersoSubstate(persoType), rRet);
     return {};
 }
 
 Return<void> RadioResponse::updateSimPhonebookRecordsResponse(const V1_6::RadioResponseInfo& info,
                                                               int32_t updatedRecordIndex) {
     LOG_CALL << info.serial;
-    CHECK_CB(mSimCb);
-    mSimCb->updateSimPhonebookRecordsResponse(toAidl(info), updatedRecordIndex);
+    simCb()->updateSimPhonebookRecordsResponse(toAidl(info), updatedRecordIndex);
     return {};
 }
 
diff --git a/radio/aidl/compat/libradiocompat/sim/RadioSim.cpp b/radio/aidl/compat/libradiocompat/sim/RadioSim.cpp
index ca27918..b43f64f 100644
--- a/radio/aidl/compat/libradiocompat/sim/RadioSim.cpp
+++ b/radio/aidl/compat/libradiocompat/sim/RadioSim.cpp
@@ -30,6 +30,10 @@
 namespace aidl = ::aidl::android::hardware::radio::sim;
 constexpr auto ok = &ScopedAStatus::ok;
 
+std::shared_ptr<aidl::IRadioSimResponse> RadioSim::respond() {
+    return mCallbackManager->response().simCb();
+}
+
 ScopedAStatus RadioSim::areUiccApplicationsEnabled(int32_t serial) {
     LOG_CALL << serial;
     mHal1_5->areUiccApplicationsEnabled(serial);
@@ -58,7 +62,7 @@
 
 ScopedAStatus RadioSim::getAllowedCarriers(int32_t serial) {
     LOG_CALL << serial;
-    mHal1_5->getAllowedCarriers(serial);
+    mHal1_5->getAllowedCarriers_1_4(serial);
     return ok();
 }
 
@@ -99,7 +103,7 @@
     if (mHal1_6) {
         mHal1_6->getSimPhonebookCapacity(serial);
     } else {
-        respond().getSimPhonebookCapacityResponse(notSupported(serial), {});
+        respond()->getSimPhonebookCapacityResponse(notSupported(serial), {});
     }
     return ok();
 }
@@ -109,7 +113,7 @@
     if (mHal1_6) {
         mHal1_6->getSimPhonebookRecords(serial);
     } else {
-        respond().getSimPhonebookRecordsResponse(notSupported(serial));
+        respond()->getSimPhonebookRecordsResponse(notSupported(serial));
     }
     return ok();
 }
@@ -217,16 +221,10 @@
 }
 
 ScopedAStatus RadioSim::setResponseFunctions(
-        const std::shared_ptr<aidl::IRadioSimResponse>& simResponse,
-        const std::shared_ptr<aidl::IRadioSimIndication>& simIndication) {
-    LOG_CALL << simResponse << ' ' << simIndication;
-
-    CHECK(simResponse);
-    CHECK(simIndication);
-
-    mRadioResponse->setResponseFunction(simResponse);
-    mRadioIndication->setResponseFunction(simIndication);
-
+        const std::shared_ptr<aidl::IRadioSimResponse>& response,
+        const std::shared_ptr<aidl::IRadioSimIndication>& indication) {
+    LOG_CALL << response << ' ' << indication;
+    mCallbackManager->setResponseFunctions(response, indication);
     return ok();
 }
 
@@ -287,7 +285,7 @@
     if (mHal1_6) {
         mHal1_6->updateSimPhonebookRecords(serial, toHidl(recordInfo));
     } else {
-        respond().updateSimPhonebookRecordsResponse(notSupported(serial), 0);
+        respond()->updateSimPhonebookRecordsResponse(notSupported(serial), 0);
     }
     return ok();
 }
diff --git a/radio/aidl/compat/libradiocompat/sim/structs.cpp b/radio/aidl/compat/libradiocompat/sim/structs.cpp
index 97a21a1..bfbff02 100644
--- a/radio/aidl/compat/libradiocompat/sim/structs.cpp
+++ b/radio/aidl/compat/libradiocompat/sim/structs.cpp
@@ -173,7 +173,6 @@
             .atr = status.base.base.atr,
             .iccid = status.base.base.iccid,
             .eid = status.base.eid,
-            // TODO(b/203699028): we don't know portId here (but we can get it from RadioConfig)
             .slotMap = {static_cast<int32_t>(status.base.base.physicalSlotId), 0},
     };
 }
diff --git a/radio/aidl/compat/libradiocompat/voice/RadioIndication-voice.cpp b/radio/aidl/compat/libradiocompat/voice/RadioIndication-voice.cpp
index 6d9bda8..359fce0 100644
--- a/radio/aidl/compat/libradiocompat/voice/RadioIndication-voice.cpp
+++ b/radio/aidl/compat/libradiocompat/voice/RadioIndication-voice.cpp
@@ -29,113 +29,102 @@
 namespace aidl = ::aidl::android::hardware::radio::voice;
 
 void RadioIndication::setResponseFunction(std::shared_ptr<aidl::IRadioVoiceIndication> voiceCb) {
-    CHECK(voiceCb);
     mVoiceCb = voiceCb;
 }
 
+std::shared_ptr<aidl::IRadioVoiceIndication> RadioIndication::voiceCb() {
+    return mVoiceCb.get();
+}
+
 Return<void> RadioIndication::callRing(V1_0::RadioIndicationType type, bool isGsm,
                                        const V1_0::CdmaSignalInfoRecord& record) {
     LOG_CALL << type;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->callRing(toAidl(type), isGsm, toAidl(record));
+    voiceCb()->callRing(toAidl(type), isGsm, toAidl(record));
     return {};
 }
 
 Return<void> RadioIndication::callStateChanged(V1_0::RadioIndicationType type) {
     LOG_CALL << type;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->callStateChanged(toAidl(type));
+    voiceCb()->callStateChanged(toAidl(type));
     return {};
 }
 
 Return<void> RadioIndication::cdmaCallWaiting(V1_0::RadioIndicationType type,
                                               const V1_0::CdmaCallWaiting& callWaitingRecord) {
     LOG_CALL << type;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->cdmaCallWaiting(toAidl(type), toAidl(callWaitingRecord));
+    voiceCb()->cdmaCallWaiting(toAidl(type), toAidl(callWaitingRecord));
     return {};
 }
 
 Return<void> RadioIndication::cdmaInfoRec(V1_0::RadioIndicationType type,
                                           const V1_0::CdmaInformationRecords& records) {
     LOG_CALL << type;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->cdmaInfoRec(toAidl(type), toAidl(records.infoRec));
+    voiceCb()->cdmaInfoRec(toAidl(type), toAidl(records.infoRec));
     return {};
 }
 
 Return<void> RadioIndication::cdmaOtaProvisionStatus(V1_0::RadioIndicationType type,
                                                      V1_0::CdmaOtaProvisionStatus status) {
     LOG_CALL << type;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->cdmaOtaProvisionStatus(toAidl(type), aidl::CdmaOtaProvisionStatus(status));
+    voiceCb()->cdmaOtaProvisionStatus(toAidl(type), aidl::CdmaOtaProvisionStatus(status));
     return {};
 }
 
 Return<void> RadioIndication::currentEmergencyNumberList(
         V1_0::RadioIndicationType type, const hidl_vec<V1_4::EmergencyNumber>& emergencyNumbers) {
     LOG_CALL << type;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->currentEmergencyNumberList(toAidl(type), toAidl(emergencyNumbers));
+    voiceCb()->currentEmergencyNumberList(toAidl(type), toAidl(emergencyNumbers));
     return {};
 }
 
 Return<void> RadioIndication::enterEmergencyCallbackMode(V1_0::RadioIndicationType type) {
     LOG_CALL << type;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->enterEmergencyCallbackMode(toAidl(type));
+    voiceCb()->enterEmergencyCallbackMode(toAidl(type));
     return {};
 }
 
 Return<void> RadioIndication::exitEmergencyCallbackMode(V1_0::RadioIndicationType type) {
     LOG_CALL << type;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->exitEmergencyCallbackMode(toAidl(type));
+    voiceCb()->exitEmergencyCallbackMode(toAidl(type));
     return {};
 }
 
 Return<void> RadioIndication::indicateRingbackTone(V1_0::RadioIndicationType type, bool start) {
     LOG_CALL << type;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->indicateRingbackTone(toAidl(type), start);
+    voiceCb()->indicateRingbackTone(toAidl(type), start);
     return {};
 }
 
 Return<void> RadioIndication::onSupplementaryServiceIndication(V1_0::RadioIndicationType type,
                                                                const V1_0::StkCcUnsolSsResult& ss) {
     LOG_CALL << type;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->onSupplementaryServiceIndication(toAidl(type), toAidl(ss));
+    voiceCb()->onSupplementaryServiceIndication(toAidl(type), toAidl(ss));
     return {};
 }
 
 Return<void> RadioIndication::resendIncallMute(V1_0::RadioIndicationType type) {
     LOG_CALL << type;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->resendIncallMute(toAidl(type));
+    voiceCb()->resendIncallMute(toAidl(type));
     return {};
 }
 
 Return<void> RadioIndication::srvccStateNotify(V1_0::RadioIndicationType type,
                                                V1_0::SrvccState state) {
     LOG_CALL << type;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->srvccStateNotify(toAidl(type), aidl::SrvccState(state));
+    voiceCb()->srvccStateNotify(toAidl(type), aidl::SrvccState(state));
     return {};
 }
 
 Return<void> RadioIndication::stkCallControlAlphaNotify(V1_0::RadioIndicationType type,
                                                         const hidl_string& alpha) {
     LOG_CALL << type;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->stkCallControlAlphaNotify(toAidl(type), alpha);
+    voiceCb()->stkCallControlAlphaNotify(toAidl(type), alpha);
     return {};
 }
 
 Return<void> RadioIndication::stkCallSetup(V1_0::RadioIndicationType type, int64_t timeout) {
     LOG_CALL << type;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->stkCallSetup(toAidl(type), timeout);
+    voiceCb()->stkCallSetup(toAidl(type), timeout);
     return {};
 }
 
diff --git a/radio/aidl/compat/libradiocompat/voice/RadioResponse-voice.cpp b/radio/aidl/compat/libradiocompat/voice/RadioResponse-voice.cpp
index 0a64c56..d233548 100644
--- a/radio/aidl/compat/libradiocompat/voice/RadioResponse-voice.cpp
+++ b/radio/aidl/compat/libradiocompat/voice/RadioResponse-voice.cpp
@@ -29,265 +29,233 @@
 namespace aidl = ::aidl::android::hardware::radio::voice;
 
 void RadioResponse::setResponseFunction(std::shared_ptr<aidl::IRadioVoiceResponse> voiceCb) {
-    CHECK(voiceCb);
     mVoiceCb = voiceCb;
 }
 
+std::shared_ptr<aidl::IRadioVoiceResponse> RadioResponse::voiceCb() {
+    return mVoiceCb.get();
+}
+
 Return<void> RadioResponse::acceptCallResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->acceptCallResponse(toAidl(info));
+    voiceCb()->acceptCallResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::conferenceResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->conferenceResponse(toAidl(info));
+    voiceCb()->conferenceResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::dialResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->dialResponse(toAidl(info));
+    voiceCb()->dialResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::emergencyDialResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->emergencyDialResponse(toAidl(info));
+    voiceCb()->emergencyDialResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::exitEmergencyCallbackModeResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->exitEmergencyCallbackModeResponse(toAidl(info));
+    voiceCb()->exitEmergencyCallbackModeResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::explicitCallTransferResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->explicitCallTransferResponse(toAidl(info));
+    voiceCb()->explicitCallTransferResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::getCallForwardStatusResponse(
         const V1_0::RadioResponseInfo& info, const hidl_vec<V1_0::CallForwardInfo>& callFwdInfos) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->getCallForwardStatusResponse(toAidl(info), toAidl(callFwdInfos));
+    voiceCb()->getCallForwardStatusResponse(toAidl(info), toAidl(callFwdInfos));
     return {};
 }
 
 Return<void> RadioResponse::getCallWaitingResponse(const V1_0::RadioResponseInfo& info, bool enable,
                                                    int32_t serviceClass) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->getCallWaitingResponse(toAidl(info), enable, serviceClass);
+    voiceCb()->getCallWaitingResponse(toAidl(info), enable, serviceClass);
     return {};
 }
 
 Return<void> RadioResponse::getClipResponse(const V1_0::RadioResponseInfo& info,
                                             V1_0::ClipStatus status) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->getClipResponse(toAidl(info), aidl::ClipStatus(status));
+    voiceCb()->getClipResponse(toAidl(info), aidl::ClipStatus(status));
     return {};
 }
 
 Return<void> RadioResponse::getClirResponse(const V1_0::RadioResponseInfo& info, int32_t n,
                                             int32_t m) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->getClirResponse(toAidl(info), n, m);
+    voiceCb()->getClirResponse(toAidl(info), n, m);
     return {};
 }
 
 Return<void> RadioResponse::getCurrentCallsResponse(const V1_0::RadioResponseInfo& info,
                                                     const hidl_vec<V1_0::Call>& calls) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->getCurrentCallsResponse(toAidl(info), toAidl(calls));
+    voiceCb()->getCurrentCallsResponse(toAidl(info), toAidl(calls));
     return {};
 }
 
 Return<void> RadioResponse::getCurrentCallsResponse_1_2(const V1_0::RadioResponseInfo& info,
                                                         const hidl_vec<V1_2::Call>& calls) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->getCurrentCallsResponse(toAidl(info), toAidl(calls));
+    voiceCb()->getCurrentCallsResponse(toAidl(info), toAidl(calls));
     return {};
 }
 
 Return<void> RadioResponse::getCurrentCallsResponse_1_6(const V1_6::RadioResponseInfo& info,
                                                         const hidl_vec<V1_6::Call>& calls) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->getCurrentCallsResponse(toAidl(info), toAidl(calls));
+    voiceCb()->getCurrentCallsResponse(toAidl(info), toAidl(calls));
     return {};
 }
 
 Return<void> RadioResponse::getLastCallFailCauseResponse(
         const V1_0::RadioResponseInfo& info, const V1_0::LastCallFailCauseInfo& failCauseinfo) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->getLastCallFailCauseResponse(toAidl(info), toAidl(failCauseinfo));
+    voiceCb()->getLastCallFailCauseResponse(toAidl(info), toAidl(failCauseinfo));
     return {};
 }
 
 Return<void> RadioResponse::getMuteResponse(const V1_0::RadioResponseInfo& info, bool enable) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->getMuteResponse(toAidl(info), enable);
+    voiceCb()->getMuteResponse(toAidl(info), enable);
     return {};
 }
 
 Return<void> RadioResponse::getPreferredVoicePrivacyResponse(const V1_0::RadioResponseInfo& info,
                                                              bool enable) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->getPreferredVoicePrivacyResponse(toAidl(info), enable);
+    voiceCb()->getPreferredVoicePrivacyResponse(toAidl(info), enable);
     return {};
 }
 
 Return<void> RadioResponse::getTTYModeResponse(const V1_0::RadioResponseInfo& info,
                                                V1_0::TtyMode mode) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->getTtyModeResponse(toAidl(info), aidl::TtyMode(mode));
+    voiceCb()->getTtyModeResponse(toAidl(info), aidl::TtyMode(mode));
     return {};
 }
 
 Return<void> RadioResponse::handleStkCallSetupRequestFromSimResponse(
         const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->handleStkCallSetupRequestFromSimResponse(toAidl(info));
+    voiceCb()->handleStkCallSetupRequestFromSimResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::hangupConnectionResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->hangupConnectionResponse(toAidl(info));
+    voiceCb()->hangupConnectionResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::hangupForegroundResumeBackgroundResponse(
         const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->hangupForegroundResumeBackgroundResponse(toAidl(info));
+    voiceCb()->hangupForegroundResumeBackgroundResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::hangupWaitingOrBackgroundResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->hangupWaitingOrBackgroundResponse(toAidl(info));
+    voiceCb()->hangupWaitingOrBackgroundResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::rejectCallResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->rejectCallResponse(toAidl(info));
+    voiceCb()->rejectCallResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::sendBurstDtmfResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->sendBurstDtmfResponse(toAidl(info));
+    voiceCb()->sendBurstDtmfResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::sendCDMAFeatureCodeResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->sendCdmaFeatureCodeResponse(toAidl(info));
+    voiceCb()->sendCdmaFeatureCodeResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::sendDtmfResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->sendDtmfResponse(toAidl(info));
+    voiceCb()->sendDtmfResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::separateConnectionResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->separateConnectionResponse(toAidl(info));
+    voiceCb()->separateConnectionResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setCallForwardResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->setCallForwardResponse(toAidl(info));
+    voiceCb()->setCallForwardResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setCallWaitingResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->setCallWaitingResponse(toAidl(info));
+    voiceCb()->setCallWaitingResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setClirResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->setClirResponse(toAidl(info));
+    voiceCb()->setClirResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setMuteResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->setMuteResponse(toAidl(info));
+    voiceCb()->setMuteResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setPreferredVoicePrivacyResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->setPreferredVoicePrivacyResponse(toAidl(info));
+    voiceCb()->setPreferredVoicePrivacyResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::setTTYModeResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->setTtyModeResponse(toAidl(info));
+    voiceCb()->setTtyModeResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::startDtmfResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->startDtmfResponse(toAidl(info));
+    voiceCb()->startDtmfResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::stopDtmfResponse(const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->stopDtmfResponse(toAidl(info));
+    voiceCb()->stopDtmfResponse(toAidl(info));
     return {};
 }
 
 Return<void> RadioResponse::switchWaitingOrHoldingAndActiveResponse(
         const V1_0::RadioResponseInfo& info) {
     LOG_CALL << info.serial;
-    CHECK_CB(mVoiceCb);
-    mVoiceCb->switchWaitingOrHoldingAndActiveResponse(toAidl(info));
+    voiceCb()->switchWaitingOrHoldingAndActiveResponse(toAidl(info));
     return {};
 }
 
diff --git a/radio/aidl/compat/libradiocompat/voice/RadioVoice.cpp b/radio/aidl/compat/libradiocompat/voice/RadioVoice.cpp
index 16c6b14..71d1a56 100644
--- a/radio/aidl/compat/libradiocompat/voice/RadioVoice.cpp
+++ b/radio/aidl/compat/libradiocompat/voice/RadioVoice.cpp
@@ -30,6 +30,10 @@
 namespace aidl = ::aidl::android::hardware::radio::voice;
 constexpr auto ok = &ScopedAStatus::ok;
 
+std::shared_ptr<aidl::IRadioVoiceResponse> RadioVoice::respond() {
+    return mCallbackManager->response().voiceCb();
+}
+
 ScopedAStatus RadioVoice::acceptCall(int32_t serial) {
     LOG_CALL << serial;
     mHal1_5->acceptCall(serial);
@@ -49,13 +53,19 @@
 }
 
 ScopedAStatus RadioVoice::emergencyDial(  //
-        int32_t serial, const aidl::Dial& dialInfo, aidl::EmergencyServiceCategory categories,
+        int32_t serial, const aidl::Dial& info, int32_t categories,
         const std::vector<std::string>& urns, aidl::EmergencyCallRouting routing,
-        bool hasKnownUserIntentEmerg, bool isTesting) {
+        bool knownUserIntentEmerg, bool isTesting) {
     LOG_CALL << serial;
-    mHal1_5->emergencyDial(serial, toHidl(dialInfo),
-                           toHidlBitfield<V1_4::EmergencyServiceCategory>(categories), toHidl(urns),
-                           V1_4::EmergencyCallRouting(routing), hasKnownUserIntentEmerg, isTesting);
+    if (mHal1_6) {
+        mHal1_6->emergencyDial_1_6(  //
+                serial, toHidl(info), toHidlBitfield<V1_4::EmergencyServiceCategory>(categories),
+                toHidl(urns), V1_4::EmergencyCallRouting(routing), knownUserIntentEmerg, isTesting);
+    } else {
+        mHal1_5->emergencyDial(  //
+                serial, toHidl(info), toHidlBitfield<V1_4::EmergencyServiceCategory>(categories),
+                toHidl(urns), V1_4::EmergencyCallRouting(routing), knownUserIntentEmerg, isTesting);
+    }
     return ok();
 }
 
@@ -98,7 +108,11 @@
 
 ScopedAStatus RadioVoice::getCurrentCalls(int32_t serial) {
     LOG_CALL << serial;
-    mHal1_5->getCurrentCalls(serial);
+    if (mHal1_6) {
+        mHal1_6->getCurrentCalls_1_6(serial);
+    } else {
+        mHal1_5->getCurrentCalls(serial);
+    }
     return ok();
 }
 
@@ -152,7 +166,7 @@
 
 ScopedAStatus RadioVoice::isVoNrEnabled(int32_t serial) {
     LOG_CALL << serial;
-    // TODO(b/203699028): can't call isVoNrEnabledResponse with 1.6 callback
+    respond()->isVoNrEnabledResponse(notSupported(serial), false);
     return ok();
 }
 
@@ -224,16 +238,10 @@
 }
 
 ScopedAStatus RadioVoice::setResponseFunctions(
-        const std::shared_ptr<aidl::IRadioVoiceResponse>& voiceResponse,
-        const std::shared_ptr<aidl::IRadioVoiceIndication>& voiceIndication) {
-    LOG_CALL << voiceResponse << ' ' << voiceIndication;
-
-    CHECK(voiceResponse);
-    CHECK(voiceIndication);
-
-    mRadioResponse->setResponseFunction(voiceResponse);
-    mRadioIndication->setResponseFunction(voiceIndication);
-
+        const std::shared_ptr<aidl::IRadioVoiceResponse>& response,
+        const std::shared_ptr<aidl::IRadioVoiceIndication>& indication) {
+    LOG_CALL << response << ' ' << indication;
+    mCallbackManager->setResponseFunctions(response, indication);
     return ok();
 }
 
@@ -245,7 +253,8 @@
 
 ndk::ScopedAStatus RadioVoice::setVoNrEnabled(int32_t serial, [[maybe_unused]] bool enable) {
     LOG_CALL << serial;
-    // TODO(b/203699028): should set `persist.radio.is_vonr_enabled_` property instead
+    // Note: a workaround for older HALs could also be setting persist.radio.is_vonr_enabled_
+    respond()->setVoNrEnabledResponse(notSupported(serial));
     return ok();
 }
 
diff --git a/radio/aidl/compat/libradiocompat/voice/structs.cpp b/radio/aidl/compat/libradiocompat/voice/structs.cpp
index ae6342e..254ea20 100644
--- a/radio/aidl/compat/libradiocompat/voice/structs.cpp
+++ b/radio/aidl/compat/libradiocompat/voice/structs.cpp
@@ -147,7 +147,7 @@
             .number = num.number,
             .mcc = num.mcc,
             .mnc = num.mnc,
-            .categories = aidl::EmergencyServiceCategory(num.categories),
+            .categories = num.categories,
             .urns = toAidl(num.urns),
             .sources = num.sources,
     };
diff --git a/radio/aidl/compat/service/service.cpp b/radio/aidl/compat/service/service.cpp
index 6bcd4b0..8af05de 100644
--- a/radio/aidl/compat/service/service.cpp
+++ b/radio/aidl/compat/service/service.cpp
@@ -19,13 +19,12 @@
 #include <android-base/logging.h>
 #include <android/binder_manager.h>
 #include <android/binder_process.h>
+#include <libradiocompat/CallbackManager.h>
 #include <libradiocompat/RadioConfig.h>
 #include <libradiocompat/RadioData.h>
-#include <libradiocompat/RadioIndication.h>
 #include <libradiocompat/RadioMessaging.h>
 #include <libradiocompat/RadioModem.h>
 #include <libradiocompat/RadioNetwork.h>
-#include <libradiocompat/RadioResponse.h>
 #include <libradiocompat/RadioSim.h>
 #include <libradiocompat/RadioVoice.h>
 
@@ -36,9 +35,8 @@
 static std::vector<std::shared_ptr<ndk::ICInterface>> gPublishedHals;
 
 template <typename T>
-static void publishRadioHal(std::shared_ptr<compat::DriverContext> context,
-                            sp<V1_5::IRadio> hidlHal, sp<compat::RadioResponse> responseCb,
-                            sp<compat::RadioIndication> indicationCb, const std::string& slot) {
+static void publishRadioHal(std::shared_ptr<compat::DriverContext> ctx, sp<V1_5::IRadio> hidlHal,
+                            std::shared_ptr<compat::CallbackManager> cm, const std::string& slot) {
     const auto instance = T::descriptor + "/"s + slot;
     if (!AServiceManager_isDeclared(instance.c_str())) {
         LOG(INFO) << instance << " is not declared in VINTF (this may be intentional)";
@@ -46,7 +44,7 @@
     }
     LOG(DEBUG) << "Publishing " << instance;
 
-    auto aidlHal = ndk::SharedRefBase::make<T>(context, hidlHal, responseCb, indicationCb);
+    auto aidlHal = ndk::SharedRefBase::make<T>(ctx, hidlHal, cm);
     gPublishedHals.push_back(aidlHal);
     const auto status = AServiceManager_addService(aidlHal->asBinder().get(), instance.c_str());
     CHECK_EQ(status, STATUS_OK);
@@ -59,17 +57,14 @@
     hidl_utils::linkDeathToDeath(radioHidl);
 
     auto context = std::make_shared<compat::DriverContext>();
+    auto callbackMgr = std::make_shared<compat::CallbackManager>(context, radioHidl);
 
-    auto responseCb = sp<compat::RadioResponse>::make(context);
-    auto indicationCb = sp<compat::RadioIndication>::make(context);
-    radioHidl->setResponseFunctions(responseCb, indicationCb).assertOk();
-
-    publishRadioHal<compat::RadioData>(context, radioHidl, responseCb, indicationCb, slot);
-    publishRadioHal<compat::RadioMessaging>(context, radioHidl, responseCb, indicationCb, slot);
-    publishRadioHal<compat::RadioModem>(context, radioHidl, responseCb, indicationCb, slot);
-    publishRadioHal<compat::RadioNetwork>(context, radioHidl, responseCb, indicationCb, slot);
-    publishRadioHal<compat::RadioSim>(context, radioHidl, responseCb, indicationCb, slot);
-    publishRadioHal<compat::RadioVoice>(context, radioHidl, responseCb, indicationCb, slot);
+    publishRadioHal<compat::RadioData>(context, radioHidl, callbackMgr, slot);
+    publishRadioHal<compat::RadioMessaging>(context, radioHidl, callbackMgr, slot);
+    publishRadioHal<compat::RadioModem>(context, radioHidl, callbackMgr, slot);
+    publishRadioHal<compat::RadioNetwork>(context, radioHidl, callbackMgr, slot);
+    publishRadioHal<compat::RadioSim>(context, radioHidl, callbackMgr, slot);
+    publishRadioHal<compat::RadioVoice>(context, radioHidl, callbackMgr, slot);
 }
 
 static void publishRadioConfig() {
@@ -86,6 +81,7 @@
 }
 
 static void main() {
+    base::InitLogging(nullptr, base::LogdLogger(base::RADIO));
     base::SetDefaultTag("radiocompat");
     base::SetMinimumLogSeverity(base::VERBOSE);
     LOG(DEBUG) << "Radio HAL compat service starting...";
diff --git a/radio/aidl/vts/Android.bp b/radio/aidl/vts/Android.bp
new file mode 100644
index 0000000..8060e4b
--- /dev/null
+++ b/radio/aidl/vts/Android.bp
@@ -0,0 +1,74 @@
+// Copyright 2021 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "hardware_interfaces_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["hardware_interfaces_license"],
+}
+
+cc_test {
+    name: "VtsHalRadioTargetTest",
+    defaults: [
+        "VtsHalTargetTestDefaults",
+        "use_libaidlvintf_gtest_helper_static",
+    ],
+    srcs: [
+        "radio_aidl_hal_utils.cpp",
+        "radio_config_indication.cpp",
+        "radio_config_response.cpp",
+        "radio_config_test.cpp",
+        "radio_data_indication.cpp",
+        "radio_data_response.cpp",
+        "radio_data_test.cpp",
+        "radio_messaging_indication.cpp",
+        "radio_messaging_response.cpp",
+        "radio_messaging_test.cpp",
+        "radio_modem_indication.cpp",
+        "radio_modem_response.cpp",
+        "radio_modem_test.cpp",
+        "radio_network_indication.cpp",
+        "radio_network_response.cpp",
+        "radio_network_test.cpp",
+        "radio_sim_indication.cpp",
+        "radio_sim_response.cpp",
+        "radio_sim_test.cpp",
+        "radio_voice_indication.cpp",
+        "radio_voice_response.cpp",
+        "radio_voice_test.cpp",
+        "VtsHalRadioTargetTest.cpp",
+    ],
+    shared_libs: [
+        "libbinder_ndk",
+        "libvintf",
+    ],
+    static_libs: [
+        "android.hardware.radio-V1-ndk",
+        "android.hardware.radio.config-V1-ndk",
+        "android.hardware.radio.data-V1-ndk",
+        "android.hardware.radio.messaging-V1-ndk",
+        "android.hardware.radio.modem-V1-ndk",
+        "android.hardware.radio.network-V1-ndk",
+        "android.hardware.radio.sim-V1-ndk",
+        "android.hardware.radio.voice-V1-ndk",
+    ],
+    // TODO(b/210712359): enable after b/207695009 is resolved.
+    //test_suites: [
+    //    "general-tests",
+    //    "vts",
+    //],
+}
diff --git a/radio/aidl/vts/VtsHalRadioTargetTest.cpp b/radio/aidl/vts/VtsHalRadioTargetTest.cpp
new file mode 100644
index 0000000..1ebc6af
--- /dev/null
+++ b/radio/aidl/vts/VtsHalRadioTargetTest.cpp
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android/binder_process.h>
+
+#include "radio_config_utils.h"
+#include "radio_data_utils.h"
+#include "radio_messaging_utils.h"
+#include "radio_modem_utils.h"
+#include "radio_network_utils.h"
+#include "radio_sim_utils.h"
+#include "radio_voice_utils.h"
+
+GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(RadioConfigTest);
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, RadioConfigTest,
+        testing::ValuesIn(android::getAidlHalInstanceNames(IRadioConfig::descriptor)),
+        android::PrintInstanceNameToString);
+
+GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(RadioDataTest);
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, RadioDataTest,
+        testing::ValuesIn(android::getAidlHalInstanceNames(IRadioData::descriptor)),
+        android::PrintInstanceNameToString);
+
+GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(RadioMessagingTest);
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, RadioMessagingTest,
+        testing::ValuesIn(android::getAidlHalInstanceNames(IRadioMessaging::descriptor)),
+        android::PrintInstanceNameToString);
+
+GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(RadioModemTest);
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, RadioModemTest,
+        testing::ValuesIn(android::getAidlHalInstanceNames(IRadioModem::descriptor)),
+        android::PrintInstanceNameToString);
+
+GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(RadioNetworkTest);
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, RadioNetworkTest,
+        testing::ValuesIn(android::getAidlHalInstanceNames(IRadioNetwork::descriptor)),
+        android::PrintInstanceNameToString);
+
+GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(RadioSimTest);
+INSTANTIATE_TEST_SUITE_P(PerInstance, RadioSimTest,
+                         testing::ValuesIn(android::getAidlHalInstanceNames(IRadioSim::descriptor)),
+                         android::PrintInstanceNameToString);
+
+GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(RadioVoiceTest);
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, RadioVoiceTest,
+        testing::ValuesIn(android::getAidlHalInstanceNames(IRadioVoice::descriptor)),
+        android::PrintInstanceNameToString);
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    ABinderProcess_setThreadPoolMaxThreadCount(1);
+    ABinderProcess_startThreadPool();
+    return RUN_ALL_TESTS();
+}
diff --git a/radio/aidl/vts/radio_aidl_hal_utils.cpp b/radio/aidl/vts/radio_aidl_hal_utils.cpp
new file mode 100644
index 0000000..dc61a3c
--- /dev/null
+++ b/radio/aidl/vts/radio_aidl_hal_utils.cpp
@@ -0,0 +1,206 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#define LOG_TAG "RadioTest"
+
+#include "radio_aidl_hal_utils.h"
+#include <iostream>
+#include "VtsCoreUtil.h"
+#include "radio_config_utils.h"
+#include "radio_sim_utils.h"
+
+#define WAIT_TIMEOUT_PERIOD 75
+
+sim::CardStatus cardStatus = {};
+int serial = 0;
+int count_ = 0;
+
+int GetRandomSerialNumber() {
+    return rand();
+}
+
+::testing::AssertionResult CheckAnyOfErrors(RadioError err, std::vector<RadioError> errors,
+                                            CheckFlag flag) {
+    const static std::vector<RadioError> generalErrors = {
+            RadioError::RADIO_NOT_AVAILABLE,   RadioError::NO_MEMORY,
+            RadioError::INTERNAL_ERR,          RadioError::SYSTEM_ERR,
+            RadioError::REQUEST_NOT_SUPPORTED, RadioError::CANCELLED};
+    if (flag == CHECK_GENERAL_ERROR || flag == CHECK_OEM_AND_GENERAL_ERROR) {
+        for (size_t i = 0; i < generalErrors.size(); i++) {
+            if (err == generalErrors[i]) {
+                return testing::AssertionSuccess();
+            }
+        }
+    }
+    if (flag == CHECK_OEM_ERROR || flag == CHECK_OEM_AND_GENERAL_ERROR) {
+        if (err >= RadioError::OEM_ERROR_1 && err <= RadioError::OEM_ERROR_25) {
+            return testing::AssertionSuccess();
+        }
+    }
+    for (size_t i = 0; i < errors.size(); i++) {
+        if (err == errors[i]) {
+            return testing::AssertionSuccess();
+        }
+    }
+    return testing::AssertionFailure() << "RadioError:" + toString(err) + " is returned";
+}
+
+// Runs "pm list features" and attempts to find the specified feature in its output.
+bool deviceSupportsFeature(const char* feature) {
+    bool hasFeature = false;
+    FILE* p = popen("/system/bin/pm list features", "re");
+    if (p) {
+        char* line = NULL;
+        size_t len = 0;
+        while (getline(&line, &len, p) > 0) {
+            if (strstr(line, feature)) {
+                hasFeature = true;
+                break;
+            }
+        }
+        pclose(p);
+    } else {
+        __android_log_print(ANDROID_LOG_FATAL, LOG_TAG, "popen failed: %d", errno);
+        _exit(EXIT_FAILURE);
+    }
+    __android_log_print(ANDROID_LOG_INFO, LOG_TAG, "Feature %s: %ssupported", feature,
+                        hasFeature ? "" : "not ");
+    return hasFeature;
+}
+
+bool isSsSsEnabled() {
+    // Do not use checkSubstringInCommandOutput("getprop persist.radio.multisim.config", "")
+    // until b/148904287 is fixed. We need exact matching instead of partial matching. (i.e.
+    // by definition the empty string "" is a substring of any string).
+    return !isDsDsEnabled() && !isTsTsEnabled();
+}
+
+bool isDsDsEnabled() {
+    return testing::checkSubstringInCommandOutput("getprop persist.radio.multisim.config", "dsds");
+}
+
+bool isTsTsEnabled() {
+    return testing::checkSubstringInCommandOutput("getprop persist.radio.multisim.config", "tsts");
+}
+
+bool isVoiceInService(RegState state) {
+    return RegState::REG_HOME == state || RegState::REG_ROAMING == state;
+}
+
+bool isVoiceEmergencyOnly(RegState state) {
+    return RegState::NOT_REG_MT_NOT_SEARCHING_OP_EM == state ||
+           RegState::NOT_REG_MT_SEARCHING_OP_EM == state || RegState::REG_DENIED_EM == state ||
+           RegState::UNKNOWN_EM == state;
+}
+
+bool stringEndsWith(std::string const& string, std::string const& end) {
+    if (string.size() >= end.size()) {
+        return (0 == string.compare(string.size() - end.size() - 1, end.size(), end));
+    } else {
+        return false;
+    }
+}
+
+bool isServiceValidForDeviceConfiguration(std::string& serviceName) {
+    if (isSsSsEnabled()) {
+        // Device is configured as SSSS.
+        if (stringEndsWith(serviceName, RADIO_SERVICE_SLOT1_NAME)) {
+            ALOGI("%s instance is not valid for SSSS device.", serviceName.c_str());
+            return false;
+        }
+    } else if (isDsDsEnabled()) {
+        // Device is configured as DSDS.
+        if (!stringEndsWith(serviceName, RADIO_SERVICE_SLOT1_NAME) &&
+            !stringEndsWith(serviceName, RADIO_SERVICE_SLOT2_NAME)) {
+            ALOGI("%s instance is not valid for DSDS device.", serviceName.c_str());
+            return false;
+        }
+    } else if (isTsTsEnabled()) {
+        // Device is configured as TSTS.
+        if (!stringEndsWith(serviceName, RADIO_SERVICE_SLOT1_NAME) &&
+            !stringEndsWith(serviceName, RADIO_SERVICE_SLOT2_NAME) &&
+            !stringEndsWith(serviceName, RADIO_SERVICE_SLOT3_NAME)) {
+            ALOGI("%s instance is not valid for TSTS device.", serviceName.c_str());
+            return false;
+        }
+    }
+    return true;
+}
+
+/*
+ * Notify that the response message is received.
+ */
+void RadioServiceTest::notify(int receivedSerial) {
+    std::unique_lock<std::mutex> lock(mtx_);
+    if (serial == receivedSerial) {
+        count_++;
+        cv_.notify_one();
+    }
+}
+
+/*
+ * Wait till the response message is notified or till WAIT_TIMEOUT_PERIOD.
+ */
+std::cv_status RadioServiceTest::wait() {
+    std::unique_lock<std::mutex> lock(mtx_);
+    std::cv_status status = std::cv_status::no_timeout;
+    auto now = std::chrono::system_clock::now();
+    while (count_ == 0) {
+        status = cv_.wait_until(lock, now + std::chrono::seconds(WAIT_TIMEOUT_PERIOD));
+        if (status == std::cv_status::timeout) {
+            return status;
+        }
+    }
+    count_--;
+    return status;
+}
+
+/**
+ * Specific features on the Radio HAL rely on Radio HAL Capabilities.
+ * The VTS test related to those features must not run if the related capability is disabled.
+ * Typical usage within VTS:
+ * if (getRadioHalCapabilities()) return;
+ */
+bool RadioServiceTest::getRadioHalCapabilities() {
+    // Get HalDeviceCapabilities from RadioConfig
+    std::shared_ptr<RadioConfigResponse> radioConfigRsp =
+            ndk::SharedRefBase::make<RadioConfigResponse>(*this);
+    std::shared_ptr<RadioConfigIndication> radioConfigInd =
+            ndk::SharedRefBase::make<RadioConfigIndication>(*this);
+    radio_config->setResponseFunctions(radioConfigRsp, radioConfigInd);
+    serial = GetRandomSerialNumber();
+    radio_config->getHalDeviceCapabilities(serial);
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    return radioConfigRsp->modemReducedFeatureSet1;
+}
+
+/**
+ * Some VTS tests require the SIM card status to be present before running.
+ * Update the SIM card status, which can be accessed via the extern cardStatus.
+ */
+void RadioServiceTest::updateSimCardStatus() {
+    // Update CardStatus from RadioSim
+    std::shared_ptr<RadioSimResponse> radioSimRsp =
+            ndk::SharedRefBase::make<RadioSimResponse>(*this);
+    std::shared_ptr<RadioSimIndication> radioSimInd =
+            ndk::SharedRefBase::make<RadioSimIndication>(*this);
+    radio_sim->setResponseFunctions(radioSimRsp, radioSimInd);
+    serial = GetRandomSerialNumber();
+    radio_sim->getIccCardStatus(serial);
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioSimRsp->rspInfo.type);
+    EXPECT_EQ(serial, radioSimRsp->rspInfo.serial);
+    EXPECT_EQ(RadioError::NONE, radioSimRsp->rspInfo.error);
+}
diff --git a/radio/aidl/vts/radio_aidl_hal_utils.h b/radio/aidl/vts/radio_aidl_hal_utils.h
new file mode 100644
index 0000000..414ffbc
--- /dev/null
+++ b/radio/aidl/vts/radio_aidl_hal_utils.h
@@ -0,0 +1,144 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <aidl/Gtest.h>
+#include <aidl/Vintf.h>
+#include <aidl/android/hardware/radio/RadioError.h>
+#include <aidl/android/hardware/radio/config/IRadioConfig.h>
+#include <aidl/android/hardware/radio/network/RegState.h>
+#include <aidl/android/hardware/radio/sim/CardStatus.h>
+#include <aidl/android/hardware/radio/sim/IRadioSim.h>
+#include <utils/Log.h>
+#include <vector>
+
+using namespace aidl::android::hardware::radio;
+using aidl::android::hardware::radio::network::RegState;
+using aidl::android::hardware::radio::sim::CardStatus;
+
+extern CardStatus cardStatus;
+extern int serial;
+extern int count_;
+
+/*
+ * MACRO used to skip test case when radio response return error REQUEST_NOT_SUPPORTED
+ * on HAL versions which has deprecated the request interfaces. The MACRO can only be used
+ * AFTER receiving radio response.
+ */
+#define SKIP_TEST_IF_REQUEST_NOT_SUPPORTED_WITH_HAL(__ver__, __radio__, __radioRsp__)      \
+    do {                                                                                   \
+        sp<::android::hardware::radio::V##__ver__::IRadio> __radio =                       \
+                ::android::hardware::radio::V##__ver__::IRadio::castFrom(__radio__);       \
+        if (__radio && __radioRsp__->rspInfo.error == RadioError::REQUEST_NOT_SUPPORTED) { \
+            GTEST_SKIP() << "REQUEST_NOT_SUPPORTED";                                       \
+        }                                                                                  \
+    } while (0)
+
+enum CheckFlag {
+    CHECK_DEFAULT = 0,
+    CHECK_GENERAL_ERROR = 1,
+    CHECK_OEM_ERROR = 2,
+    CHECK_OEM_AND_GENERAL_ERROR = 3,
+    CHECK_SAP_ERROR = 4,
+};
+
+static constexpr const char* FEATURE_VOICE_CALL = "android.software.connectionservice";
+
+static constexpr const char* FEATURE_TELEPHONY = "android.hardware.telephony";
+
+static constexpr const char* FEATURE_TELEPHONY_GSM = "android.hardware.telephony.gsm";
+
+static constexpr const char* FEATURE_TELEPHONY_CDMA = "android.hardware.telephony.cdma";
+
+#define MODEM_EMERGENCY_CALL_ESTABLISH_TIME 3
+#define MODEM_EMERGENCY_CALL_DISCONNECT_TIME 3
+#define MODEM_SET_SIM_POWER_DELAY_IN_SECONDS 2
+
+#define RADIO_SERVICE_SLOT1_NAME "slot1"  // HAL instance name for SIM slot 1 or single SIM device
+#define RADIO_SERVICE_SLOT2_NAME "slot2"  // HAL instance name for SIM slot 2 on dual SIM device
+#define RADIO_SERVICE_SLOT3_NAME "slot3"  // HAL instance name for SIM slot 3 on triple SIM device
+
+/*
+ * Generate random serial number for radio test
+ */
+int GetRandomSerialNumber();
+
+/*
+ * Check multiple radio error codes which are possibly returned because of the different
+ * vendor/devices implementations. It allows optional checks for general errors or/and oem errors.
+ */
+::testing::AssertionResult CheckAnyOfErrors(RadioError err, std::vector<RadioError> generalError,
+                                            CheckFlag flag = CHECK_DEFAULT);
+
+/*
+ * Check if device supports feature.
+ */
+bool deviceSupportsFeature(const char* feature);
+
+/*
+ * Check if device is in SsSs (Single SIM Single Standby).
+ */
+bool isSsSsEnabled();
+
+/*
+ * Check if device is in DSDS (Dual SIM Dual Standby).
+ */
+bool isDsDsEnabled();
+
+/*
+ * Check if device is in TSTS (Triple SIM Triple Standby).
+ */
+bool isTsTsEnabled();
+
+/*
+ * Check if voice status is in emergency only.
+ */
+bool isVoiceEmergencyOnly(RegState state);
+
+/*
+ * Check if voice status is in service.
+ */
+bool isVoiceInService(RegState state);
+
+/*
+ * Check if service is valid for device configuration
+ */
+bool isServiceValidForDeviceConfiguration(std::string& serviceName);
+
+/**
+ * RadioServiceTest base class
+ */
+class RadioServiceTest {
+  protected:
+    std::mutex mtx_;
+    std::condition_variable cv_;
+    std::shared_ptr<config::IRadioConfig> radio_config;
+    std::shared_ptr<sim::IRadioSim> radio_sim;
+
+  public:
+    /* Used as a mechanism to inform the test about data/event callback */
+    void notify(int receivedSerial);
+
+    /* Test code calls this function to wait for response */
+    std::cv_status wait();
+
+    /* Get the radio HAL capabilities */
+    bool getRadioHalCapabilities();
+
+    /* Update SIM card status */
+    void updateSimCardStatus();
+};
diff --git a/radio/aidl/vts/radio_config_indication.cpp b/radio/aidl/vts/radio_config_indication.cpp
new file mode 100644
index 0000000..a84c20b
--- /dev/null
+++ b/radio/aidl/vts/radio_config_indication.cpp
@@ -0,0 +1,24 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "radio_config_utils.h"
+
+RadioConfigIndication::RadioConfigIndication(RadioServiceTest& parent) : parent_config(parent) {}
+
+ndk::ScopedAStatus RadioConfigIndication::simSlotsStatusChanged(
+        RadioIndicationType /*type*/, const std::vector<SimSlotStatus>& /*slotStatus*/) {
+    return ndk::ScopedAStatus::ok();
+}
diff --git a/radio/aidl/vts/radio_config_response.cpp b/radio/aidl/vts/radio_config_response.cpp
new file mode 100644
index 0000000..1a152fb
--- /dev/null
+++ b/radio/aidl/vts/radio_config_response.cpp
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "radio_config_utils.h"
+
+RadioConfigResponse::RadioConfigResponse(RadioServiceTest& parent) : parent_config(parent) {}
+
+ndk::ScopedAStatus RadioConfigResponse::getSimSlotsStatusResponse(
+        const RadioResponseInfo& /* info */, const std::vector<SimSlotStatus>& /* slotStatus */) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioConfigResponse::setSimSlotsMappingResponse(
+        const RadioResponseInfo& /* info */) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioConfigResponse::getPhoneCapabilityResponse(
+        const RadioResponseInfo& info, const PhoneCapability& phoneCapability) {
+    rspInfo = info;
+    phoneCap = phoneCapability;
+    parent_config.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioConfigResponse::setPreferredDataModemResponse(
+        const RadioResponseInfo& /* info */) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioConfigResponse::getNumOfLiveModemsResponse(
+        const RadioResponseInfo& /* info */, const int8_t /* numOfLiveModems */) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioConfigResponse::setNumOfLiveModemsResponse(
+        const RadioResponseInfo& /* info */) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioConfigResponse::getHalDeviceCapabilitiesResponse(
+        const RadioResponseInfo& info, bool modemReducedFeatures) {
+    modemReducedFeatureSet1 = modemReducedFeatures;
+    parent_config.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
diff --git a/radio/aidl/vts/radio_config_test.cpp b/radio/aidl/vts/radio_config_test.cpp
new file mode 100644
index 0000000..2d7fe01
--- /dev/null
+++ b/radio/aidl/vts/radio_config_test.cpp
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android/binder_manager.h>
+
+#include "radio_config_utils.h"
+
+#define ASSERT_OK(ret) ASSERT_TRUE(ret.isOk())
+
+void RadioConfigTest::SetUp() {
+    std::string serviceName = GetParam();
+
+    if (!isServiceValidForDeviceConfiguration(serviceName)) {
+        ALOGI("Skipped the test due to device configuration.");
+        GTEST_SKIP();
+    }
+
+    radio_config = IRadioConfig::fromBinder(
+            ndk::SpAIBinder(AServiceManager_waitForService(GetParam().c_str())));
+    ASSERT_NE(nullptr, radio_config.get());
+
+    radioRsp_config = ndk::SharedRefBase::make<RadioConfigResponse>(*this);
+    ASSERT_NE(nullptr, radioRsp_config.get());
+
+    count_ = 0;
+
+    radioInd_config = ndk::SharedRefBase::make<RadioConfigIndication>(*this);
+    ASSERT_NE(nullptr, radioInd_config.get());
+
+    radio_config->setResponseFunctions(radioRsp_config, radioInd_config);
+}
+
+/*
+ * Test IRadioConfig.getHalDeviceCapabilities() for the response returned.
+ */
+TEST_P(RadioConfigTest, getHalDeviceCapabilities) {
+    serial = GetRandomSerialNumber();
+    ndk::ScopedAStatus res = radio_config->getHalDeviceCapabilities(serial);
+    ASSERT_OK(res);
+    ALOGI("getHalDeviceCapabilities, rspInfo.error = %s\n",
+          toString(radioRsp_config->rspInfo.error).c_str());
+}
diff --git a/radio/aidl/vts/radio_config_utils.h b/radio/aidl/vts/radio_config_utils.h
new file mode 100644
index 0000000..465c106
--- /dev/null
+++ b/radio/aidl/vts/radio_config_utils.h
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/radio/config/BnRadioConfigIndication.h>
+#include <aidl/android/hardware/radio/config/BnRadioConfigResponse.h>
+#include <aidl/android/hardware/radio/config/IRadioConfig.h>
+
+#include "radio_aidl_hal_utils.h"
+
+using namespace aidl::android::hardware::radio::config;
+
+class RadioConfigTest;
+
+/* Callback class for radio config response */
+class RadioConfigResponse : public BnRadioConfigResponse {
+  protected:
+    RadioServiceTest& parent_config;
+
+  public:
+    RadioConfigResponse(RadioServiceTest& parent_config);
+    virtual ~RadioConfigResponse() = default;
+
+    RadioResponseInfo rspInfo;
+    PhoneCapability phoneCap;
+    bool modemReducedFeatureSet1;
+
+    virtual ndk::ScopedAStatus getSimSlotsStatusResponse(
+            const RadioResponseInfo& info, const std::vector<SimSlotStatus>& slotStatus) override;
+
+    virtual ndk::ScopedAStatus setSimSlotsMappingResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus getPhoneCapabilityResponse(
+            const RadioResponseInfo& info, const PhoneCapability& phoneCapability) override;
+
+    virtual ndk::ScopedAStatus setPreferredDataModemResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus getNumOfLiveModemsResponse(const RadioResponseInfo& info,
+                                                          const int8_t numOfLiveModems) override;
+
+    virtual ndk::ScopedAStatus setNumOfLiveModemsResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus getHalDeviceCapabilitiesResponse(
+            const RadioResponseInfo& info, bool modemReducedFeatureSet1) override;
+};
+
+/* Callback class for radio config indication */
+class RadioConfigIndication : public BnRadioConfigIndication {
+  protected:
+    RadioServiceTest& parent_config;
+
+  public:
+    RadioConfigIndication(RadioServiceTest& parent_config);
+    virtual ~RadioConfigIndication() = default;
+
+    virtual ndk::ScopedAStatus simSlotsStatusChanged(
+            RadioIndicationType type, const std::vector<SimSlotStatus>& slotStatus) override;
+};
+
+// The main test class for Radio AIDL Config.
+class RadioConfigTest : public ::testing::TestWithParam<std::string>, public RadioServiceTest {
+  public:
+    virtual void SetUp() override;
+    ndk::ScopedAStatus updateSimCardStatus();
+
+    /* radio config service handle in RadioServiceTest */
+    /* radio config response handle */
+    std::shared_ptr<RadioConfigResponse> radioRsp_config;
+    /* radio config indication handle */
+    std::shared_ptr<RadioConfigIndication> radioInd_config;
+};
diff --git a/radio/aidl/vts/radio_data_indication.cpp b/radio/aidl/vts/radio_data_indication.cpp
new file mode 100644
index 0000000..61e079e
--- /dev/null
+++ b/radio/aidl/vts/radio_data_indication.cpp
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "radio_data_utils.h"
+
+RadioDataIndication::RadioDataIndication(RadioServiceTest& parent) : parent_data(parent) {}
+
+ndk::ScopedAStatus RadioDataIndication::dataCallListChanged(
+        RadioIndicationType /*type*/, const std::vector<SetupDataCallResult>& /*dcList*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioDataIndication::keepaliveStatus(RadioIndicationType /*type*/,
+                                                        const KeepaliveStatus& /*status*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioDataIndication::pcoData(RadioIndicationType /*type*/,
+                                                const PcoDataInfo& /*pco*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioDataIndication::unthrottleApn(RadioIndicationType /*type*/,
+                                                      const DataProfileInfo& /*dataProfileInfo*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioDataIndication::slicingConfigChanged(
+        RadioIndicationType /*type*/, const SlicingConfig& /*slicingConfig*/) {
+    return ndk::ScopedAStatus::ok();
+}
diff --git a/radio/aidl/vts/radio_data_response.cpp b/radio/aidl/vts/radio_data_response.cpp
new file mode 100644
index 0000000..9b17bfb
--- /dev/null
+++ b/radio/aidl/vts/radio_data_response.cpp
@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "radio_data_utils.h"
+
+RadioDataResponse::RadioDataResponse(RadioServiceTest& parent) : parent_data(parent) {}
+
+ndk::ScopedAStatus RadioDataResponse::acknowledgeRequest(int32_t /*serial*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioDataResponse::allocatePduSessionIdResponse(const RadioResponseInfo& info,
+                                                                   int32_t id) {
+    rspInfo = info;
+    allocatedPduSessionId = id;
+    parent_data.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioDataResponse::cancelHandoverResponse(const RadioResponseInfo& info) {
+    rspInfo = info;
+    parent_data.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioDataResponse::deactivateDataCallResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioDataResponse::getDataCallListResponse(
+        const RadioResponseInfo& info, const std::vector<SetupDataCallResult>& /*dcResponse*/) {
+    rspInfo = info;
+    parent_data.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioDataResponse::getSlicingConfigResponse(
+        const RadioResponseInfo& info, const SlicingConfig& /*slicingConfig*/) {
+    rspInfo = info;
+    parent_data.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioDataResponse::releasePduSessionIdResponse(const RadioResponseInfo& info) {
+    rspInfo = info;
+    parent_data.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioDataResponse::setDataAllowedResponse(const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioDataResponse::setDataProfileResponse(const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioDataResponse::setDataThrottlingResponse(const RadioResponseInfo& info) {
+    rspInfo = info;
+    parent_data.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioDataResponse::setInitialAttachApnResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioDataResponse::setupDataCallResponse(const RadioResponseInfo& info,
+                                                            const SetupDataCallResult& dcResponse) {
+    rspInfo = info;
+    setupDataCallResult = dcResponse;
+    parent_data.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioDataResponse::startHandoverResponse(const RadioResponseInfo& info) {
+    rspInfo = info;
+    parent_data.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioDataResponse::startKeepaliveResponse(const RadioResponseInfo& /*info*/,
+                                                             const KeepaliveStatus& /*status*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioDataResponse::stopKeepaliveResponse(const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
diff --git a/radio/aidl/vts/radio_data_test.cpp b/radio/aidl/vts/radio_data_test.cpp
new file mode 100644
index 0000000..8547e9d
--- /dev/null
+++ b/radio/aidl/vts/radio_data_test.cpp
@@ -0,0 +1,311 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <aidl/android/hardware/radio/RadioAccessFamily.h>
+#include <aidl/android/hardware/radio/config/IRadioConfig.h>
+#include <aidl/android/hardware/radio/data/ApnTypes.h>
+#include <android-base/logging.h>
+#include <android/binder_manager.h>
+
+#include "radio_data_utils.h"
+
+#define ASSERT_OK(ret) ASSERT_TRUE(ret.isOk())
+
+void RadioDataTest::SetUp() {
+    std::string serviceName = GetParam();
+
+    if (!isServiceValidForDeviceConfiguration(serviceName)) {
+        ALOGI("Skipped the test due to device configuration.");
+        GTEST_SKIP();
+    }
+
+    radio_data = IRadioData::fromBinder(
+            ndk::SpAIBinder(AServiceManager_waitForService(GetParam().c_str())));
+    ASSERT_NE(nullptr, radio_data.get());
+
+    radioRsp_data = ndk::SharedRefBase::make<RadioDataResponse>(*this);
+    ASSERT_NE(nullptr, radioRsp_data.get());
+
+    count_ = 0;
+
+    radioInd_data = ndk::SharedRefBase::make<RadioDataIndication>(*this);
+    ASSERT_NE(nullptr, radioInd_data.get());
+
+    radio_data->setResponseFunctions(radioRsp_data, radioInd_data);
+
+    // Assert IRadioSim exists and SIM is present before testing
+    radio_sim = sim::IRadioSim::fromBinder(ndk::SpAIBinder(
+            AServiceManager_waitForService("android.hardware.radio.sim.IRadioSim/slot1")));
+    ASSERT_NE(nullptr, radio_sim.get());
+    updateSimCardStatus();
+    EXPECT_EQ(CardStatus::STATE_PRESENT, cardStatus.cardState);
+
+    // Assert IRadioConfig exists before testing
+    radio_config = config::IRadioConfig::fromBinder(ndk::SpAIBinder(
+            AServiceManager_waitForService("android.hardware.radio.config.IRadioConfig/default")));
+    ASSERT_NE(nullptr, radio_config.get());
+}
+
+ndk::ScopedAStatus RadioDataTest::getDataCallList() {
+    serial = GetRandomSerialNumber();
+    radio_data->getDataCallList(serial);
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    return ndk::ScopedAStatus::ok();
+}
+
+/*
+ * Test IRadioData.setupDataCall() for the response returned.
+ */
+TEST_P(RadioDataTest, setupDataCall) {
+    serial = GetRandomSerialNumber();
+
+    AccessNetwork accessNetwork = AccessNetwork::EUTRAN;
+
+    DataProfileInfo dataProfileInfo;
+    memset(&dataProfileInfo, 0, sizeof(dataProfileInfo));
+    dataProfileInfo.profileId = DataProfileInfo::ID_DEFAULT;
+    dataProfileInfo.apn = std::string("internet");
+    dataProfileInfo.protocol = PdpProtocolType::IP;
+    dataProfileInfo.roamingProtocol = PdpProtocolType::IP;
+    dataProfileInfo.authType = ApnAuthType::NO_PAP_NO_CHAP;
+    dataProfileInfo.user = std::string("username");
+    dataProfileInfo.password = std::string("password");
+    dataProfileInfo.type = DataProfileInfo::TYPE_THREE_GPP;
+    dataProfileInfo.maxConnsTime = 300;
+    dataProfileInfo.maxConns = 20;
+    dataProfileInfo.waitTime = 0;
+    dataProfileInfo.enabled = true;
+    dataProfileInfo.supportedApnTypesBitmap =
+            static_cast<int32_t>(ApnTypes::IMS) | static_cast<int32_t>(ApnTypes::IA);
+    dataProfileInfo.bearerBitmap = static_cast<int32_t>(RadioAccessFamily::GPRS) |
+                                   static_cast<int32_t>(RadioAccessFamily::EDGE) |
+                                   static_cast<int32_t>(RadioAccessFamily::UMTS) |
+                                   static_cast<int32_t>(RadioAccessFamily::HSDPA) |
+                                   static_cast<int32_t>(RadioAccessFamily::HSUPA) |
+                                   static_cast<int32_t>(RadioAccessFamily::HSPA) |
+                                   static_cast<int32_t>(RadioAccessFamily::EHRPD) |
+                                   static_cast<int32_t>(RadioAccessFamily::LTE) |
+                                   static_cast<int32_t>(RadioAccessFamily::HSPAP) |
+                                   static_cast<int32_t>(RadioAccessFamily::IWLAN);
+    dataProfileInfo.mtuV4 = 0;
+    dataProfileInfo.mtuV6 = 0;
+    dataProfileInfo.preferred = true;
+    dataProfileInfo.persistent = false;
+
+    bool roamingAllowed = false;
+
+    std::vector<LinkAddress> addresses = {};
+    std::vector<std::string> dnses = {};
+
+    DataRequestReason reason = DataRequestReason::NORMAL;
+    SliceInfo sliceInfo;
+    bool matchAllRuleAllowed = true;
+
+    ndk::ScopedAStatus res =
+            radio_data->setupDataCall(serial, accessNetwork, dataProfileInfo, roamingAllowed,
+                                      reason, addresses, dnses, -1, sliceInfo, matchAllRuleAllowed);
+    ASSERT_OK(res);
+
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_data->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_data->rspInfo.serial);
+    if (cardStatus.cardState == CardStatus::STATE_ABSENT) {
+        ASSERT_TRUE(CheckAnyOfErrors(radioRsp_data->rspInfo.error,
+                                     {RadioError::SIM_ABSENT, RadioError::RADIO_NOT_AVAILABLE,
+                                      RadioError::OP_NOT_ALLOWED_BEFORE_REG_TO_NW}));
+    } else if (cardStatus.cardState == CardStatus::STATE_PRESENT) {
+        ASSERT_TRUE(CheckAnyOfErrors(radioRsp_data->rspInfo.error,
+                                     {RadioError::NONE, RadioError::RADIO_NOT_AVAILABLE,
+                                      RadioError::OP_NOT_ALLOWED_BEFORE_REG_TO_NW}));
+    }
+}
+
+/*
+ * Test IRadioData.setupDataCall() with osAppId for the response returned.
+ */
+TEST_P(RadioDataTest, setupDataCall_osAppId) {
+    serial = GetRandomSerialNumber();
+
+    AccessNetwork accessNetwork = AccessNetwork::EUTRAN;
+
+    TrafficDescriptor trafficDescriptor;
+    OsAppId osAppId;
+    std::string osAppIdString("osAppId");
+    std::vector<unsigned char> osAppIdVec(osAppIdString.begin(), osAppIdString.end());
+    osAppId.osAppId = osAppIdVec;
+    trafficDescriptor.osAppId = osAppId;
+
+    DataProfileInfo dataProfileInfo;
+    memset(&dataProfileInfo, 0, sizeof(dataProfileInfo));
+    dataProfileInfo.profileId = DataProfileInfo::ID_DEFAULT;
+    dataProfileInfo.apn = std::string("internet");
+    dataProfileInfo.protocol = PdpProtocolType::IP;
+    dataProfileInfo.roamingProtocol = PdpProtocolType::IP;
+    dataProfileInfo.authType = ApnAuthType::NO_PAP_NO_CHAP;
+    dataProfileInfo.user = std::string("username");
+    dataProfileInfo.password = std::string("password");
+    dataProfileInfo.type = DataProfileInfo::TYPE_THREE_GPP;
+    dataProfileInfo.maxConnsTime = 300;
+    dataProfileInfo.maxConns = 20;
+    dataProfileInfo.waitTime = 0;
+    dataProfileInfo.enabled = true;
+    dataProfileInfo.supportedApnTypesBitmap =
+            static_cast<int32_t>(ApnTypes::IMS) | static_cast<int32_t>(ApnTypes::IA);
+    dataProfileInfo.bearerBitmap = static_cast<int32_t>(RadioAccessFamily::GPRS) |
+                                   static_cast<int32_t>(RadioAccessFamily::EDGE) |
+                                   static_cast<int32_t>(RadioAccessFamily::UMTS) |
+                                   static_cast<int32_t>(RadioAccessFamily::HSDPA) |
+                                   static_cast<int32_t>(RadioAccessFamily::HSUPA) |
+                                   static_cast<int32_t>(RadioAccessFamily::HSPA) |
+                                   static_cast<int32_t>(RadioAccessFamily::EHRPD) |
+                                   static_cast<int32_t>(RadioAccessFamily::LTE) |
+                                   static_cast<int32_t>(RadioAccessFamily::HSPAP) |
+                                   static_cast<int32_t>(RadioAccessFamily::IWLAN);
+    dataProfileInfo.mtuV4 = 0;
+    dataProfileInfo.mtuV6 = 0;
+    dataProfileInfo.preferred = true;
+    dataProfileInfo.persistent = false;
+    dataProfileInfo.trafficDescriptor = trafficDescriptor;
+
+    bool roamingAllowed = false;
+
+    std::vector<LinkAddress> addresses = {};
+    std::vector<std::string> dnses = {};
+
+    DataRequestReason reason = DataRequestReason::NORMAL;
+    SliceInfo sliceInfo;
+    bool matchAllRuleAllowed = true;
+
+    ndk::ScopedAStatus res =
+            radio_data->setupDataCall(serial, accessNetwork, dataProfileInfo, roamingAllowed,
+                                      reason, addresses, dnses, -1, sliceInfo, matchAllRuleAllowed);
+    ASSERT_OK(res);
+
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_data->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_data->rspInfo.serial);
+    if (cardStatus.cardState == CardStatus::STATE_ABSENT) {
+        ASSERT_TRUE(CheckAnyOfErrors(radioRsp_data->rspInfo.error,
+                                     {RadioError::SIM_ABSENT, RadioError::RADIO_NOT_AVAILABLE,
+                                      RadioError::OP_NOT_ALLOWED_BEFORE_REG_TO_NW}));
+    } else if (cardStatus.cardState == CardStatus::STATE_PRESENT) {
+        ASSERT_TRUE(CheckAnyOfErrors(radioRsp_data->rspInfo.error,
+                                     {RadioError::NONE, RadioError::RADIO_NOT_AVAILABLE,
+                                      RadioError::OP_NOT_ALLOWED_BEFORE_REG_TO_NW}));
+        if (radioRsp_data->setupDataCallResult.trafficDescriptors.size() <= 0) {
+            return;
+        }
+        EXPECT_EQ(trafficDescriptor.osAppId.value().osAppId,
+                  radioRsp_data->setupDataCallResult.trafficDescriptors[0].osAppId.value().osAppId);
+    }
+}
+
+/*
+ * Test IRadioData.getSlicingConfig() for the response returned.
+ */
+TEST_P(RadioDataTest, getSlicingConfig) {
+    serial = GetRandomSerialNumber();
+    radio_data->getSlicingConfig(serial);
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_data->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_data->rspInfo.serial);
+    if (getRadioHalCapabilities()) {
+        ASSERT_TRUE(CheckAnyOfErrors(radioRsp_data->rspInfo.error,
+                                     {RadioError::REQUEST_NOT_SUPPORTED}));
+    } else {
+        ASSERT_TRUE(CheckAnyOfErrors(radioRsp_data->rspInfo.error,
+                                     {RadioError::NONE, RadioError::RADIO_NOT_AVAILABLE,
+                                      RadioError::INTERNAL_ERR, RadioError::MODEM_ERR}));
+    }
+}
+
+/*
+ * Test IRadioData.setDataThrottling() for the response returned.
+ */
+TEST_P(RadioDataTest, setDataThrottling) {
+    serial = GetRandomSerialNumber();
+
+    ndk::ScopedAStatus res = radio_data->setDataThrottling(
+            serial, DataThrottlingAction::THROTTLE_SECONDARY_CARRIER, 60000);
+    ASSERT_OK(res);
+
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_data->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_data->rspInfo.serial);
+    if (getRadioHalCapabilities()) {
+        ASSERT_TRUE(CheckAnyOfErrors(radioRsp_data->rspInfo.error,
+                                     {RadioError::REQUEST_NOT_SUPPORTED, RadioError::NONE}));
+    } else {
+        ASSERT_TRUE(CheckAnyOfErrors(radioRsp_data->rspInfo.error,
+                                     {RadioError::RADIO_NOT_AVAILABLE, RadioError::MODEM_ERR,
+                                      RadioError::NONE, RadioError::INVALID_ARGUMENTS}));
+    }
+
+    sleep(1);
+    serial = GetRandomSerialNumber();
+
+    res = radio_data->setDataThrottling(serial, DataThrottlingAction::THROTTLE_ANCHOR_CARRIER,
+                                        60000);
+    ASSERT_OK(res);
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_data->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_data->rspInfo.serial);
+    if (getRadioHalCapabilities()) {
+        ASSERT_TRUE(CheckAnyOfErrors(radioRsp_data->rspInfo.error,
+                                     {RadioError::REQUEST_NOT_SUPPORTED, RadioError::NONE}));
+    } else {
+        ASSERT_TRUE(CheckAnyOfErrors(radioRsp_data->rspInfo.error,
+                                     {RadioError::RADIO_NOT_AVAILABLE, RadioError::MODEM_ERR,
+                                      RadioError::NONE, RadioError::INVALID_ARGUMENTS}));
+    }
+
+    sleep(1);
+    serial = GetRandomSerialNumber();
+
+    res = radio_data->setDataThrottling(serial, DataThrottlingAction::HOLD, 60000);
+    ASSERT_OK(res);
+
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_data->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_data->rspInfo.serial);
+    if (getRadioHalCapabilities()) {
+        ASSERT_TRUE(CheckAnyOfErrors(radioRsp_data->rspInfo.error,
+                                     {RadioError::REQUEST_NOT_SUPPORTED, RadioError::NONE}));
+    } else {
+        ASSERT_TRUE(CheckAnyOfErrors(radioRsp_data->rspInfo.error,
+                                     {RadioError::RADIO_NOT_AVAILABLE, RadioError::MODEM_ERR,
+                                      RadioError::NONE, RadioError::INVALID_ARGUMENTS}));
+    }
+
+    sleep(1);
+    serial = GetRandomSerialNumber();
+
+    res = radio_data->setDataThrottling(serial, DataThrottlingAction::NO_DATA_THROTTLING, 60000);
+    ASSERT_OK(res);
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_data->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_data->rspInfo.serial);
+    if (getRadioHalCapabilities()) {
+        ASSERT_TRUE(CheckAnyOfErrors(radioRsp_data->rspInfo.error,
+                                     {RadioError::REQUEST_NOT_SUPPORTED, RadioError::NONE}));
+    } else {
+        ASSERT_TRUE(CheckAnyOfErrors(radioRsp_data->rspInfo.error,
+                                     {RadioError::RADIO_NOT_AVAILABLE, RadioError::MODEM_ERR,
+                                      RadioError::NONE, RadioError::INVALID_ARGUMENTS}));
+    }
+
+    sleep(1);
+}
diff --git a/radio/aidl/vts/radio_data_utils.h b/radio/aidl/vts/radio_data_utils.h
new file mode 100644
index 0000000..fb91ef6
--- /dev/null
+++ b/radio/aidl/vts/radio_data_utils.h
@@ -0,0 +1,117 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/radio/data/BnRadioDataIndication.h>
+#include <aidl/android/hardware/radio/data/BnRadioDataResponse.h>
+#include <aidl/android/hardware/radio/data/IRadioData.h>
+
+#include "radio_aidl_hal_utils.h"
+
+using namespace aidl::android::hardware::radio::data;
+
+class RadioDataTest;
+
+/* Callback class for radio data response */
+class RadioDataResponse : public BnRadioDataResponse {
+  protected:
+    RadioServiceTest& parent_data;
+
+  public:
+    RadioDataResponse(RadioServiceTest& parent_data);
+    virtual ~RadioDataResponse() = default;
+
+    RadioResponseInfo rspInfo;
+    int32_t allocatedPduSessionId;
+    SetupDataCallResult setupDataCallResult;
+
+    virtual ndk::ScopedAStatus acknowledgeRequest(int32_t serial) override;
+
+    virtual ndk::ScopedAStatus allocatePduSessionIdResponse(const RadioResponseInfo& info,
+                                                            int32_t id) override;
+
+    virtual ndk::ScopedAStatus cancelHandoverResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus deactivateDataCallResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus getDataCallListResponse(
+            const RadioResponseInfo& info,
+            const std::vector<SetupDataCallResult>& dcResponse) override;
+
+    virtual ndk::ScopedAStatus getSlicingConfigResponse(
+            const RadioResponseInfo& info, const SlicingConfig& slicingConfig) override;
+
+    virtual ndk::ScopedAStatus releasePduSessionIdResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setDataAllowedResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setDataProfileResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setDataThrottlingResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setInitialAttachApnResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setupDataCallResponse(
+            const RadioResponseInfo& info, const SetupDataCallResult& dcResponse) override;
+
+    virtual ndk::ScopedAStatus startHandoverResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus startKeepaliveResponse(const RadioResponseInfo& info,
+                                                      const KeepaliveStatus& status) override;
+
+    virtual ndk::ScopedAStatus stopKeepaliveResponse(const RadioResponseInfo& info) override;
+};
+
+/* Callback class for radio data indication */
+class RadioDataIndication : public BnRadioDataIndication {
+  protected:
+    RadioServiceTest& parent_data;
+
+  public:
+    RadioDataIndication(RadioServiceTest& parent_data);
+    virtual ~RadioDataIndication() = default;
+
+    virtual ndk::ScopedAStatus dataCallListChanged(
+            RadioIndicationType type, const std::vector<SetupDataCallResult>& dcList) override;
+
+    virtual ndk::ScopedAStatus keepaliveStatus(RadioIndicationType type,
+                                               const KeepaliveStatus& status) override;
+
+    virtual ndk::ScopedAStatus pcoData(RadioIndicationType type, const PcoDataInfo& pco) override;
+
+    virtual ndk::ScopedAStatus unthrottleApn(RadioIndicationType type,
+                                             const DataProfileInfo& dataProfile) override;
+    virtual ndk::ScopedAStatus slicingConfigChanged(RadioIndicationType type,
+                                                    const SlicingConfig& slicingConfig) override;
+};
+
+// The main test class for Radio AIDL Data.
+class RadioDataTest : public ::testing::TestWithParam<std::string>, public RadioServiceTest {
+  protected:
+    /* Get current data call list */
+    ndk::ScopedAStatus getDataCallList();
+
+  public:
+    virtual void SetUp() override;
+
+    /* radio data service handle */
+    std::shared_ptr<IRadioData> radio_data;
+    /* radio data response handle */
+    std::shared_ptr<RadioDataResponse> radioRsp_data;
+    /* radio data indication handle */
+    std::shared_ptr<RadioDataIndication> radioInd_data;
+};
diff --git a/radio/aidl/vts/radio_messaging_indication.cpp b/radio/aidl/vts/radio_messaging_indication.cpp
new file mode 100644
index 0000000..c69611f
--- /dev/null
+++ b/radio/aidl/vts/radio_messaging_indication.cpp
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "radio_messaging_utils.h"
+
+RadioMessagingIndication::RadioMessagingIndication(RadioServiceTest& parent)
+    : parent_messaging(parent) {}
+
+ndk::ScopedAStatus RadioMessagingIndication::cdmaNewSms(RadioIndicationType /*type*/,
+                                                        const CdmaSmsMessage& /*msg*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioMessagingIndication::cdmaRuimSmsStorageFull(RadioIndicationType /*type*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioMessagingIndication::newBroadcastSms(RadioIndicationType /*type*/,
+                                                             const std::vector<uint8_t>& /*data*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioMessagingIndication::newSms(RadioIndicationType /*type*/,
+                                                    const std::vector<uint8_t>& /*pdu*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioMessagingIndication::newSmsOnSim(RadioIndicationType /*type*/,
+                                                         int32_t /*recordNumber*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioMessagingIndication::newSmsStatusReport(
+        RadioIndicationType /*type*/, const std::vector<uint8_t>& /*pdu*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioMessagingIndication::onUssd(RadioIndicationType /*type*/,
+                                                    UssdModeType /*modeType*/,
+                                                    const std::string& /*msg*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioMessagingIndication::simSmsStorageFull(RadioIndicationType /*type*/) {
+    return ndk::ScopedAStatus::ok();
+}
diff --git a/radio/aidl/vts/radio_messaging_response.cpp b/radio/aidl/vts/radio_messaging_response.cpp
new file mode 100644
index 0000000..718df7e
--- /dev/null
+++ b/radio/aidl/vts/radio_messaging_response.cpp
@@ -0,0 +1,152 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "radio_messaging_utils.h"
+
+RadioMessagingResponse::RadioMessagingResponse(RadioServiceTest& parent)
+    : parent_messaging(parent) {}
+
+ndk::ScopedAStatus RadioMessagingResponse::acknowledgeIncomingGsmSmsWithPduResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioMessagingResponse::acknowledgeLastIncomingCdmaSmsResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioMessagingResponse::acknowledgeLastIncomingGsmSmsResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioMessagingResponse::acknowledgeRequest(int32_t /*serial*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioMessagingResponse::cancelPendingUssdResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioMessagingResponse::deleteSmsOnRuimResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioMessagingResponse::deleteSmsOnSimResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioMessagingResponse::getCdmaBroadcastConfigResponse(
+        const RadioResponseInfo& /*info*/,
+        const std::vector<CdmaBroadcastSmsConfigInfo>& /*configs*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioMessagingResponse::getGsmBroadcastConfigResponse(
+        const RadioResponseInfo& /*info*/,
+        const std::vector<GsmBroadcastSmsConfigInfo>& /*configs*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioMessagingResponse::getSmscAddressResponse(const RadioResponseInfo& /*info*/,
+                                                                  const std::string& /*smsc*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioMessagingResponse::reportSmsMemoryStatusResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioMessagingResponse::sendCdmaSmsExpectMoreResponse(
+        const RadioResponseInfo& info, const SendSmsResult& sms) {
+    rspInfo = info;
+    sendSmsResult = sms;
+    parent_messaging.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioMessagingResponse::sendCdmaSmsResponse(const RadioResponseInfo& info,
+                                                               const SendSmsResult& sms) {
+    rspInfo = info;
+    sendSmsResult = sms;
+    parent_messaging.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioMessagingResponse::sendImsSmsResponse(const RadioResponseInfo& /*info*/,
+                                                              const SendSmsResult& /*sms*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioMessagingResponse::sendSmsExpectMoreResponse(const RadioResponseInfo& info,
+                                                                     const SendSmsResult& sms) {
+    rspInfo = info;
+    sendSmsResult = sms;
+    parent_messaging.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioMessagingResponse::sendSmsResponse(const RadioResponseInfo& info,
+                                                           const SendSmsResult& sms) {
+    rspInfo = info;
+    sendSmsResult = sms;
+    parent_messaging.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioMessagingResponse::sendUssdResponse(const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioMessagingResponse::setCdmaBroadcastActivationResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioMessagingResponse::setCdmaBroadcastConfigResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioMessagingResponse::setGsmBroadcastActivationResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioMessagingResponse::setGsmBroadcastConfigResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioMessagingResponse::setSmscAddressResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioMessagingResponse::writeSmsToRuimResponse(const RadioResponseInfo& /*info*/,
+                                                                  int32_t /*index*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioMessagingResponse::writeSmsToSimResponse(const RadioResponseInfo& /*info*/,
+                                                                 int32_t /*index*/) {
+    return ndk::ScopedAStatus::ok();
+}
diff --git a/radio/aidl/vts/radio_messaging_test.cpp b/radio/aidl/vts/radio_messaging_test.cpp
new file mode 100644
index 0000000..8abd91d
--- /dev/null
+++ b/radio/aidl/vts/radio_messaging_test.cpp
@@ -0,0 +1,199 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <aidl/android/hardware/radio/config/IRadioConfig.h>
+#include <android-base/logging.h>
+#include <android/binder_manager.h>
+
+#include "radio_messaging_utils.h"
+
+#define ASSERT_OK(ret) ASSERT_TRUE(ret.isOk())
+
+void RadioMessagingTest::SetUp() {
+    std::string serviceName = GetParam();
+
+    if (!isServiceValidForDeviceConfiguration(serviceName)) {
+        ALOGI("Skipped the test due to device configuration.");
+        GTEST_SKIP();
+    }
+
+    radio_messaging = IRadioMessaging::fromBinder(
+            ndk::SpAIBinder(AServiceManager_waitForService(GetParam().c_str())));
+    ASSERT_NE(nullptr, radio_messaging.get());
+
+    radioRsp_messaging = ndk::SharedRefBase::make<RadioMessagingResponse>(*this);
+    ASSERT_NE(nullptr, radioRsp_messaging.get());
+
+    count_ = 0;
+
+    radioInd_messaging = ndk::SharedRefBase::make<RadioMessagingIndication>(*this);
+    ASSERT_NE(nullptr, radioInd_messaging.get());
+
+    radio_messaging->setResponseFunctions(radioRsp_messaging, radioInd_messaging);
+
+    // Assert IRadioSim exists and SIM is present before testing
+    radio_sim = sim::IRadioSim::fromBinder(ndk::SpAIBinder(
+            AServiceManager_waitForService("android.hardware.radio.sim.IRadioSim/slot1")));
+    ASSERT_NE(nullptr, radio_sim.get());
+    updateSimCardStatus();
+    EXPECT_EQ(CardStatus::STATE_PRESENT, cardStatus.cardState);
+
+    // Assert IRadioConfig exists before testing
+    radio_config = config::IRadioConfig::fromBinder(ndk::SpAIBinder(
+            AServiceManager_waitForService("android.hardware.radio.config.IRadioConfig/default")));
+    ASSERT_NE(nullptr, radio_config.get());
+}
+
+/*
+ * Test IRadioMessaging.sendSms() for the response returned.
+ */
+TEST_P(RadioMessagingTest, sendSms) {
+    LOG(DEBUG) << "sendSms";
+    serial = GetRandomSerialNumber();
+    GsmSmsMessage msg;
+    msg.smscPdu = "";
+    msg.pdu = "01000b916105770203f3000006d4f29c3e9b01";
+
+    radio_messaging->sendSms(serial, msg);
+
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_messaging->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_messaging->rspInfo.serial);
+
+    if (cardStatus.cardState == CardStatus::STATE_ABSENT) {
+        ASSERT_TRUE(CheckAnyOfErrors(
+                radioRsp_messaging->rspInfo.error,
+                {RadioError::INVALID_ARGUMENTS, RadioError::INVALID_STATE, RadioError::SIM_ABSENT},
+                CHECK_GENERAL_ERROR));
+        EXPECT_EQ(0, radioRsp_messaging->sendSmsResult.errorCode);
+    }
+    LOG(DEBUG) << "sendSms finished";
+}
+
+/*
+ * Test IRadioMessaging.sendSmsExpectMore() for the response returned.
+ */
+TEST_P(RadioMessagingTest, sendSmsExpectMore) {
+    LOG(DEBUG) << "sendSmsExpectMore";
+    serial = GetRandomSerialNumber();
+    GsmSmsMessage msg;
+    msg.smscPdu = "";
+    msg.pdu = "01000b916105770203f3000006d4f29c3e9b01";
+
+    radio_messaging->sendSmsExpectMore(serial, msg);
+
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_messaging->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_messaging->rspInfo.serial);
+
+    if (cardStatus.cardState == CardStatus::STATE_ABSENT) {
+        ASSERT_TRUE(CheckAnyOfErrors(
+                radioRsp_messaging->rspInfo.error,
+                {RadioError::INVALID_ARGUMENTS, RadioError::INVALID_STATE, RadioError::SIM_ABSENT},
+                CHECK_GENERAL_ERROR));
+    }
+    LOG(DEBUG) << "sendSmsExpectMore finished";
+}
+
+/*
+ * Test IRadioMessaging.sendCdmaSms() for the response returned.
+ */
+TEST_P(RadioMessagingTest, sendCdmaSms) {
+    LOG(DEBUG) << "sendCdmaSms";
+    serial = GetRandomSerialNumber();
+
+    // Create a CdmaSmsAddress
+    CdmaSmsAddress cdmaSmsAddress;
+    cdmaSmsAddress.digitMode = CdmaSmsAddress::DIGIT_MODE_FOUR_BIT;
+    cdmaSmsAddress.isNumberModeDataNetwork = false;
+    cdmaSmsAddress.numberType = CdmaSmsAddress::NUMBER_TYPE_UNKNOWN;
+    cdmaSmsAddress.numberPlan = CdmaSmsAddress::NUMBER_PLAN_UNKNOWN;
+    cdmaSmsAddress.digits = (std::vector<uint8_t>){11, 1, 6, 5, 10, 7, 7, 2, 10, 3, 10, 3};
+
+    // Create a CdmaSmsSubAddress
+    CdmaSmsSubaddress cdmaSmsSubaddress;
+    cdmaSmsSubaddress.subaddressType = CdmaSmsSubaddress::SUBADDRESS_TYPE_NSAP;
+    cdmaSmsSubaddress.odd = false;
+    cdmaSmsSubaddress.digits = (std::vector<uint8_t>){};
+
+    // Create a CdmaSmsMessage
+    CdmaSmsMessage cdmaSmsMessage;
+    cdmaSmsMessage.teleserviceId = 4098;
+    cdmaSmsMessage.isServicePresent = false;
+    cdmaSmsMessage.serviceCategory = 0;
+    cdmaSmsMessage.address = cdmaSmsAddress;
+    cdmaSmsMessage.subAddress = cdmaSmsSubaddress;
+    cdmaSmsMessage.bearerData =
+            (std::vector<uint8_t>){15, 0, 3, 32, 3, 16, 1, 8, 16, 53, 76, 68, 6, 51, 106, 0};
+
+    radio_messaging->sendCdmaSms(serial, cdmaSmsMessage);
+
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_messaging->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_messaging->rspInfo.serial);
+
+    if (cardStatus.cardState == CardStatus::STATE_ABSENT) {
+        ASSERT_TRUE(CheckAnyOfErrors(
+                radioRsp_messaging->rspInfo.error,
+                {RadioError::INVALID_ARGUMENTS, RadioError::INVALID_STATE, RadioError::SIM_ABSENT},
+                CHECK_GENERAL_ERROR));
+    }
+    LOG(DEBUG) << "sendCdmaSms finished";
+}
+
+/*
+ * Test IRadioMessaging.sendCdmaSmsExpectMore() for the response returned.
+ */
+TEST_P(RadioMessagingTest, sendCdmaSmsExpectMore) {
+    serial = GetRandomSerialNumber();
+
+    // Create a CdmaSmsAddress
+    CdmaSmsAddress cdmaSmsAddress;
+    cdmaSmsAddress.digitMode = CdmaSmsAddress::DIGIT_MODE_FOUR_BIT;
+    cdmaSmsAddress.isNumberModeDataNetwork = false;
+    cdmaSmsAddress.numberType = CdmaSmsAddress::NUMBER_TYPE_UNKNOWN;
+    cdmaSmsAddress.numberPlan = CdmaSmsAddress::NUMBER_PLAN_UNKNOWN;
+    cdmaSmsAddress.digits = (std::vector<uint8_t>){11, 1, 6, 5, 10, 7, 7, 2, 10, 3, 10, 3};
+
+    // Create a CdmaSmsSubAddress
+    CdmaSmsSubaddress cdmaSmsSubaddress;
+    cdmaSmsSubaddress.subaddressType = CdmaSmsSubaddress::SUBADDRESS_TYPE_NSAP;
+    cdmaSmsSubaddress.odd = false;
+    cdmaSmsSubaddress.digits = (std::vector<uint8_t>){};
+
+    // Create a CdmaSmsMessage
+    CdmaSmsMessage cdmaSmsMessage;
+    cdmaSmsMessage.teleserviceId = 4098;
+    cdmaSmsMessage.isServicePresent = false;
+    cdmaSmsMessage.serviceCategory = 0;
+    cdmaSmsMessage.address = cdmaSmsAddress;
+    cdmaSmsMessage.subAddress = cdmaSmsSubaddress;
+    cdmaSmsMessage.bearerData =
+            (std::vector<uint8_t>){15, 0, 3, 32, 3, 16, 1, 8, 16, 53, 76, 68, 6, 51, 106, 0};
+
+    radio_messaging->sendCdmaSmsExpectMore(serial, cdmaSmsMessage);
+
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_messaging->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_messaging->rspInfo.serial);
+
+    if (cardStatus.cardState == CardStatus::STATE_ABSENT) {
+        ASSERT_TRUE(CheckAnyOfErrors(
+                radioRsp_messaging->rspInfo.error,
+                {RadioError::INVALID_ARGUMENTS, RadioError::INVALID_STATE, RadioError::SIM_ABSENT},
+                CHECK_GENERAL_ERROR));
+    }
+}
diff --git a/radio/aidl/vts/radio_messaging_utils.h b/radio/aidl/vts/radio_messaging_utils.h
new file mode 100644
index 0000000..7bb99cd
--- /dev/null
+++ b/radio/aidl/vts/radio_messaging_utils.h
@@ -0,0 +1,152 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/radio/messaging/BnRadioMessagingIndication.h>
+#include <aidl/android/hardware/radio/messaging/BnRadioMessagingResponse.h>
+#include <aidl/android/hardware/radio/messaging/IRadioMessaging.h>
+
+#include "radio_aidl_hal_utils.h"
+
+using namespace aidl::android::hardware::radio::messaging;
+
+class RadioMessagingTest;
+
+/* Callback class for radio messaging response */
+class RadioMessagingResponse : public BnRadioMessagingResponse {
+  protected:
+    RadioServiceTest& parent_messaging;
+
+  public:
+    RadioMessagingResponse(RadioServiceTest& parent_messaging);
+    virtual ~RadioMessagingResponse() = default;
+
+    RadioResponseInfo rspInfo;
+    SendSmsResult sendSmsResult;
+
+    virtual ndk::ScopedAStatus acknowledgeIncomingGsmSmsWithPduResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus acknowledgeLastIncomingCdmaSmsResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus acknowledgeLastIncomingGsmSmsResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus acknowledgeRequest(int32_t serial) override;
+
+    virtual ndk::ScopedAStatus cancelPendingUssdResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus deleteSmsOnRuimResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus deleteSmsOnSimResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus getCdmaBroadcastConfigResponse(
+            const RadioResponseInfo& info,
+            const std::vector<CdmaBroadcastSmsConfigInfo>& configs) override;
+
+    virtual ndk::ScopedAStatus getGsmBroadcastConfigResponse(
+            const RadioResponseInfo& info,
+            const std::vector<GsmBroadcastSmsConfigInfo>& configs) override;
+
+    virtual ndk::ScopedAStatus getSmscAddressResponse(const RadioResponseInfo& info,
+                                                      const std::string& smsc) override;
+
+    virtual ndk::ScopedAStatus reportSmsMemoryStatusResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus sendCdmaSmsExpectMoreResponse(const RadioResponseInfo& info,
+                                                             const SendSmsResult& sms) override;
+
+    virtual ndk::ScopedAStatus sendCdmaSmsResponse(const RadioResponseInfo& info,
+                                                   const SendSmsResult& sms) override;
+
+    virtual ndk::ScopedAStatus sendImsSmsResponse(const RadioResponseInfo& info,
+                                                  const SendSmsResult& sms) override;
+
+    virtual ndk::ScopedAStatus sendSmsExpectMoreResponse(const RadioResponseInfo& info,
+                                                         const SendSmsResult& sms) override;
+
+    virtual ndk::ScopedAStatus sendSmsResponse(const RadioResponseInfo& info,
+                                               const SendSmsResult& sms) override;
+
+    virtual ndk::ScopedAStatus sendUssdResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setCdmaBroadcastActivationResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setCdmaBroadcastConfigResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setGsmBroadcastActivationResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setGsmBroadcastConfigResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setSmscAddressResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus writeSmsToRuimResponse(const RadioResponseInfo& info,
+                                                      int32_t index) override;
+
+    virtual ndk::ScopedAStatus writeSmsToSimResponse(const RadioResponseInfo& info,
+                                                     int32_t index) override;
+};
+
+/* Callback class for radio messaging indication */
+class RadioMessagingIndication : public BnRadioMessagingIndication {
+  protected:
+    RadioServiceTest& parent_messaging;
+
+  public:
+    RadioMessagingIndication(RadioServiceTest& parent_messaging);
+    virtual ~RadioMessagingIndication() = default;
+
+    virtual ndk::ScopedAStatus cdmaNewSms(RadioIndicationType type,
+                                          const CdmaSmsMessage& msg) override;
+
+    virtual ndk::ScopedAStatus cdmaRuimSmsStorageFull(RadioIndicationType type) override;
+
+    virtual ndk::ScopedAStatus newBroadcastSms(RadioIndicationType type,
+                                               const std::vector<uint8_t>& data) override;
+
+    virtual ndk::ScopedAStatus newSms(RadioIndicationType type,
+                                      const std::vector<uint8_t>& pdu) override;
+
+    virtual ndk::ScopedAStatus newSmsOnSim(RadioIndicationType type, int32_t recordNumber) override;
+
+    virtual ndk::ScopedAStatus newSmsStatusReport(RadioIndicationType type,
+                                                  const std::vector<uint8_t>& pdu) override;
+
+    virtual ndk::ScopedAStatus onUssd(RadioIndicationType type, UssdModeType modeType,
+                                      const std::string& msg) override;
+
+    virtual ndk::ScopedAStatus simSmsStorageFull(RadioIndicationType type) override;
+};
+
+// The main test class for Radio AIDL Messaging.
+class RadioMessagingTest : public ::testing::TestWithParam<std::string>, public RadioServiceTest {
+  public:
+    virtual void SetUp() override;
+
+    /* radio messaging service handle */
+    std::shared_ptr<IRadioMessaging> radio_messaging;
+    /* radio messaging response handle */
+    std::shared_ptr<RadioMessagingResponse> radioRsp_messaging;
+    /* radio messaging indication handle */
+    std::shared_ptr<RadioMessagingIndication> radioInd_messaging;
+};
diff --git a/radio/aidl/vts/radio_modem_indication.cpp b/radio/aidl/vts/radio_modem_indication.cpp
new file mode 100644
index 0000000..0bfcd66
--- /dev/null
+++ b/radio/aidl/vts/radio_modem_indication.cpp
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "radio_modem_utils.h"
+
+RadioModemIndication::RadioModemIndication(RadioServiceTest& parent) : parent_modem(parent) {}
+
+ndk::ScopedAStatus RadioModemIndication::hardwareConfigChanged(
+        RadioIndicationType /*type*/, const std::vector<HardwareConfig>& /*configs*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioModemIndication::modemReset(RadioIndicationType /*type*/,
+                                                    const std::string& /*reason*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioModemIndication::radioCapabilityIndication(RadioIndicationType /*type*/,
+                                                                   const RadioCapability& /*rc*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioModemIndication::radioStateChanged(RadioIndicationType /*type*/,
+                                                           RadioState /*radioState*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioModemIndication::rilConnected(RadioIndicationType /*type*/) {
+    return ndk::ScopedAStatus::ok();
+}
diff --git a/radio/aidl/vts/radio_modem_response.cpp b/radio/aidl/vts/radio_modem_response.cpp
new file mode 100644
index 0000000..53bfab4
--- /dev/null
+++ b/radio/aidl/vts/radio_modem_response.cpp
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "radio_modem_utils.h"
+
+RadioModemResponse::RadioModemResponse(RadioServiceTest& parent) : parent_modem(parent) {}
+
+ndk::ScopedAStatus RadioModemResponse::acknowledgeRequest(int32_t /*serial*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioModemResponse::enableModemResponse(const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioModemResponse::getBasebandVersionResponse(const RadioResponseInfo& /*info*/,
+                                                                  const std::string& /*version*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioModemResponse::getDeviceIdentityResponse(const RadioResponseInfo& /*info*/,
+                                                                 const std::string& /*imei*/,
+                                                                 const std::string& /*imeisv*/,
+                                                                 const std::string& /*esn*/,
+                                                                 const std::string& /*meid*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioModemResponse::getHardwareConfigResponse(
+        const RadioResponseInfo& /*info*/, const std::vector<HardwareConfig>& /*config*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioModemResponse::getModemActivityInfoResponse(
+        const RadioResponseInfo& /*info*/, const ActivityStatsInfo& /*activityInfo*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioModemResponse::getModemStackStatusResponse(
+        const RadioResponseInfo& /*info*/, const bool /*enabled*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioModemResponse::getRadioCapabilityResponse(const RadioResponseInfo& /*info*/,
+                                                                  const RadioCapability& /*rc*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioModemResponse::nvReadItemResponse(const RadioResponseInfo& /*info*/,
+                                                          const std::string& /*result*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioModemResponse::nvResetConfigResponse(const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioModemResponse::nvWriteCdmaPrlResponse(const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioModemResponse::nvWriteItemResponse(const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioModemResponse::requestShutdownResponse(const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioModemResponse::sendDeviceStateResponse(const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioModemResponse::setRadioCapabilityResponse(const RadioResponseInfo& /*info*/,
+                                                                  const RadioCapability& /*rc*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioModemResponse::setRadioPowerResponse(const RadioResponseInfo& info) {
+    rspInfo = info;
+    parent_modem.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
diff --git a/radio/aidl/vts/radio_modem_test.cpp b/radio/aidl/vts/radio_modem_test.cpp
new file mode 100644
index 0000000..b40bb7b
--- /dev/null
+++ b/radio/aidl/vts/radio_modem_test.cpp
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <aidl/android/hardware/radio/config/IRadioConfig.h>
+#include <android-base/logging.h>
+#include <android/binder_manager.h>
+
+#include "radio_modem_utils.h"
+
+#define ASSERT_OK(ret) ASSERT_TRUE(ret.isOk())
+
+void RadioModemTest::SetUp() {
+    std::string serviceName = GetParam();
+
+    if (!isServiceValidForDeviceConfiguration(serviceName)) {
+        ALOGI("Skipped the test due to device configuration.");
+        GTEST_SKIP();
+    }
+
+    radio_modem = IRadioModem::fromBinder(
+            ndk::SpAIBinder(AServiceManager_waitForService(GetParam().c_str())));
+    ASSERT_NE(nullptr, radio_modem.get());
+
+    radioRsp_modem = ndk::SharedRefBase::make<RadioModemResponse>(*this);
+    ASSERT_NE(nullptr, radioRsp_modem.get());
+
+    count_ = 0;
+
+    radioInd_modem = ndk::SharedRefBase::make<RadioModemIndication>(*this);
+    ASSERT_NE(nullptr, radioInd_modem.get());
+
+    radio_modem->setResponseFunctions(radioRsp_modem, radioInd_modem);
+
+    // Assert IRadioSim exists and SIM is present before testing
+    radio_sim = sim::IRadioSim::fromBinder(ndk::SpAIBinder(
+            AServiceManager_waitForService("android.hardware.radio.sim.IRadioSim/slot1")));
+    ASSERT_NE(nullptr, radio_sim.get());
+    updateSimCardStatus();
+    EXPECT_EQ(CardStatus::STATE_PRESENT, cardStatus.cardState);
+
+    // Assert IRadioConfig exists before testing
+    radio_config = config::IRadioConfig::fromBinder(ndk::SpAIBinder(
+            AServiceManager_waitForService("android.hardware.radio.config.IRadioConfig/default")));
+    ASSERT_NE(nullptr, radio_config.get());
+}
+
+/*
+ * Test IRadioModem.setRadioPower() for the response returned.
+ */
+TEST_P(RadioModemTest, setRadioPower_emergencyCall_cancelled) {
+    // Set radio power to off.
+    serial = GetRandomSerialNumber();
+    radio_modem->setRadioPower(serial, false, false, false);
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_modem->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_modem->rspInfo.serial);
+    EXPECT_EQ(RadioError::NONE, radioRsp_modem->rspInfo.error);
+
+    // Set radio power to on with forEmergencyCall being true. This should put modem to only scan
+    // emergency call bands.
+    serial = GetRandomSerialNumber();
+    radio_modem->setRadioPower(serial, true, true, true);
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_modem->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_modem->rspInfo.serial);
+    EXPECT_EQ(RadioError::NONE, radioRsp_modem->rspInfo.error);
+
+    // Set radio power to on with forEmergencyCall being false. This should put modem in regular
+    // operation modem.
+    serial = GetRandomSerialNumber();
+    radio_modem->setRadioPower(serial, true, false, false);
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_modem->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_modem->rspInfo.serial);
+    EXPECT_EQ(RadioError::NONE, radioRsp_modem->rspInfo.error);
+}
diff --git a/radio/aidl/vts/radio_modem_utils.h b/radio/aidl/vts/radio_modem_utils.h
new file mode 100644
index 0000000..8779e0c
--- /dev/null
+++ b/radio/aidl/vts/radio_modem_utils.h
@@ -0,0 +1,121 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/radio/modem/BnRadioModemIndication.h>
+#include <aidl/android/hardware/radio/modem/BnRadioModemResponse.h>
+#include <aidl/android/hardware/radio/modem/IRadioModem.h>
+
+#include "radio_aidl_hal_utils.h"
+
+using namespace aidl::android::hardware::radio::modem;
+
+class RadioModemTest;
+
+/* Callback class for radio modem response */
+class RadioModemResponse : public BnRadioModemResponse {
+  protected:
+    RadioServiceTest& parent_modem;
+
+  public:
+    RadioModemResponse(RadioServiceTest& parent_modem);
+    virtual ~RadioModemResponse() = default;
+
+    RadioResponseInfo rspInfo;
+    bool isModemEnabled;
+    bool enableModemResponseToggle;
+
+    virtual ndk::ScopedAStatus acknowledgeRequest(int32_t serial) override;
+
+    virtual ndk::ScopedAStatus enableModemResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus getBasebandVersionResponse(const RadioResponseInfo& info,
+                                                          const std::string& version) override;
+
+    virtual ndk::ScopedAStatus getDeviceIdentityResponse(const RadioResponseInfo& info,
+                                                         const std::string& imei,
+                                                         const std::string& imeisv,
+                                                         const std::string& esn,
+                                                         const std::string& meid) override;
+
+    virtual ndk::ScopedAStatus getHardwareConfigResponse(
+            const RadioResponseInfo& info, const std::vector<HardwareConfig>& config) override;
+
+    virtual ndk::ScopedAStatus getModemActivityInfoResponse(
+            const RadioResponseInfo& info, const ActivityStatsInfo& activityInfo) override;
+
+    virtual ndk::ScopedAStatus getModemStackStatusResponse(const RadioResponseInfo& info,
+                                                           const bool enabled) override;
+
+    virtual ndk::ScopedAStatus getRadioCapabilityResponse(const RadioResponseInfo& info,
+                                                          const RadioCapability& rc) override;
+
+    virtual ndk::ScopedAStatus nvReadItemResponse(const RadioResponseInfo& info,
+                                                  const std::string& result) override;
+
+    virtual ndk::ScopedAStatus nvResetConfigResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus nvWriteCdmaPrlResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus nvWriteItemResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus requestShutdownResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus sendDeviceStateResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setRadioCapabilityResponse(const RadioResponseInfo& info,
+                                                          const RadioCapability& rc) override;
+
+    virtual ndk::ScopedAStatus setRadioPowerResponse(const RadioResponseInfo& info) override;
+};
+
+/* Callback class for radio modem indication */
+class RadioModemIndication : public BnRadioModemIndication {
+  protected:
+    RadioServiceTest& parent_modem;
+
+  public:
+    RadioModemIndication(RadioServiceTest& parent_modem);
+    virtual ~RadioModemIndication() = default;
+
+    virtual ndk::ScopedAStatus hardwareConfigChanged(
+            RadioIndicationType type, const std::vector<HardwareConfig>& configs) override;
+
+    virtual ndk::ScopedAStatus modemReset(RadioIndicationType type,
+                                          const std::string& reason) override;
+
+    virtual ndk::ScopedAStatus radioCapabilityIndication(RadioIndicationType type,
+                                                         const RadioCapability& rc) override;
+
+    virtual ndk::ScopedAStatus radioStateChanged(RadioIndicationType type,
+                                                 RadioState radioState) override;
+
+    virtual ndk::ScopedAStatus rilConnected(RadioIndicationType type) override;
+};
+
+// The main test class for Radio AIDL Modem.
+class RadioModemTest : public ::testing::TestWithParam<std::string>, public RadioServiceTest {
+  public:
+    virtual void SetUp() override;
+
+    /* radio modem service handle */
+    std::shared_ptr<IRadioModem> radio_modem;
+    /* radio modem response handle */
+    std::shared_ptr<RadioModemResponse> radioRsp_modem;
+    /* radio modem indication handle */
+    std::shared_ptr<RadioModemIndication> radioInd_modem;
+};
diff --git a/radio/aidl/vts/radio_network_indication.cpp b/radio/aidl/vts/radio_network_indication.cpp
new file mode 100644
index 0000000..7acbff4
--- /dev/null
+++ b/radio/aidl/vts/radio_network_indication.cpp
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "radio_network_utils.h"
+
+RadioNetworkIndication::RadioNetworkIndication(RadioServiceTest& parent) : parent_network(parent) {}
+
+ndk::ScopedAStatus RadioNetworkIndication::barringInfoChanged(
+        RadioIndicationType /*type*/, const CellIdentity& /*cellIdentity*/,
+        const std::vector<BarringInfo>& /*barringInfos*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkIndication::cdmaPrlChanged(RadioIndicationType /*type*/,
+                                                          int32_t /*version*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkIndication::cellInfoList(RadioIndicationType /*type*/,
+                                                        const std::vector<CellInfo>& /*records*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkIndication::currentLinkCapacityEstimate(
+        RadioIndicationType /*type*/, const LinkCapacityEstimate& /*lce*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkIndication::currentPhysicalChannelConfigs(
+        RadioIndicationType /*type*/, const std::vector<PhysicalChannelConfig>& /*configs*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkIndication::currentSignalStrength(
+        RadioIndicationType /*type*/, const SignalStrength& /*signalStrength*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkIndication::imsNetworkStateChanged(RadioIndicationType /*type*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkIndication::networkScanResult(RadioIndicationType /*type*/,
+                                                             const NetworkScanResult& /*result*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkIndication::networkStateChanged(RadioIndicationType /*type*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkIndication::nitzTimeReceived(RadioIndicationType /*type*/,
+                                                            const std::string& /*nitzTime*/,
+                                                            int64_t /*receivedTime*/,
+                                                            int64_t /*age*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkIndication::registrationFailed(RadioIndicationType /*type*/,
+                                                              const CellIdentity& /*cellIdentity*/,
+                                                              const std::string& /*chosenPlmn*/,
+                                                              int32_t /*domain*/,
+                                                              int32_t /*causeCode*/,
+                                                              int32_t /*additionalCauseCode*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkIndication::restrictedStateChanged(RadioIndicationType /*type*/,
+                                                                  PhoneRestrictedState /*state*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkIndication::suppSvcNotify(RadioIndicationType /*type*/,
+                                                         const SuppSvcNotification& /*suppSvc*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkIndication::voiceRadioTechChanged(RadioIndicationType /*type*/,
+                                                                 RadioTechnology /*rat*/) {
+    return ndk::ScopedAStatus::ok();
+}
diff --git a/radio/aidl/vts/radio_network_response.cpp b/radio/aidl/vts/radio_network_response.cpp
new file mode 100644
index 0000000..ccae0f3
--- /dev/null
+++ b/radio/aidl/vts/radio_network_response.cpp
@@ -0,0 +1,220 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "radio_network_utils.h"
+
+RadioNetworkResponse::RadioNetworkResponse(RadioServiceTest& parent) : parent_network(parent) {}
+
+ndk::ScopedAStatus RadioNetworkResponse::acknowledgeRequest(int32_t /*serial*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::getAllowedNetworkTypesBitmapResponse(
+        const RadioResponseInfo& info, const int32_t networkTypeBitmap) {
+    rspInfo = info;
+    networkTypeBitmapResponse = networkTypeBitmap;
+    parent_network.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::getAvailableBandModesResponse(
+        const RadioResponseInfo& /*info*/, const std::vector<RadioBandMode>& /*bandModes*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::getAvailableNetworksResponse(
+        const RadioResponseInfo& info, const std::vector<OperatorInfo>& operatorInfos) {
+    rspInfo = info;
+    networkInfos = operatorInfos;
+    parent_network.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::getBarringInfoResponse(
+        const RadioResponseInfo& /*info*/, const CellIdentity& /*cellIdentity*/,
+        const std::vector<BarringInfo>& /*barringInfos*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::getCdmaRoamingPreferenceResponse(
+        const RadioResponseInfo& /*info*/, CdmaRoamingType /*type*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::getCellInfoListResponse(
+        const RadioResponseInfo& /*info*/, const std::vector<CellInfo>& /*cellInfo*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::getDataRegistrationStateResponse(
+        const RadioResponseInfo& info, const RegStateResult& /*regResponse*/) {
+    rspInfo = info;
+    parent_network.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::getImsRegistrationStateResponse(
+        const RadioResponseInfo& /*info*/, bool /*isRegistered*/,
+        RadioTechnologyFamily /*ratFamily*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::getNetworkSelectionModeResponse(
+        const RadioResponseInfo& /*info*/, bool /*manual*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::getOperatorResponse(const RadioResponseInfo& /*info*/,
+                                                             const std::string& /*longName*/,
+                                                             const std::string& /*shortName*/,
+                                                             const std::string& /*numeric*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::getSignalStrengthResponse(
+        const RadioResponseInfo& /*info*/, const SignalStrength& /*sig_strength*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::getSystemSelectionChannelsResponse(
+        const RadioResponseInfo& info, const std::vector<RadioAccessSpecifier>& /*specifier*/) {
+    rspInfo = info;
+    parent_network.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::getUsageSettingResponse(const RadioResponseInfo& info,
+                                                                 const UsageSetting usageSetting) {
+    rspInfo = info;
+    this->usageSetting = usageSetting;
+    parent_network.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::getVoiceRadioTechnologyResponse(
+        const RadioResponseInfo& /*info*/, RadioTechnology /*rat*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::getVoiceRegistrationStateResponse(
+        const RadioResponseInfo& info, const RegStateResult& regResponse) {
+    rspInfo = info;
+    voiceRegResp.regState = regResponse.regState;
+    parent_network.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::isNrDualConnectivityEnabledResponse(
+        const RadioResponseInfo& info, bool isEnabled) {
+    rspInfo = info;
+    isNrDualConnectivityEnabled = isEnabled;
+    parent_network.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::setAllowedNetworkTypesBitmapResponse(
+        const RadioResponseInfo& info) {
+    rspInfo = info;
+    parent_network.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::setBandModeResponse(const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::setBarringPasswordResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::setCdmaRoamingPreferenceResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::setCellInfoListRateResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::setIndicationFilterResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::setLinkCapacityReportingCriteriaResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::setLocationUpdatesResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::setNetworkSelectionModeAutomaticResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::setNetworkSelectionModeManualResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::setNrDualConnectivityStateResponse(
+        const RadioResponseInfo& info) {
+    rspInfo = info;
+    parent_network.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::setSignalStrengthReportingCriteriaResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::setSuppServiceNotificationsResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::setSystemSelectionChannelsResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::setUsageSettingResponse(const RadioResponseInfo& info) {
+    rspInfo = info;
+    parent_network.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::startNetworkScanResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::stopNetworkScanResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioNetworkResponse::supplyNetworkDepersonalizationResponse(
+        const RadioResponseInfo& /*info*/, int32_t /*remainingRetries*/) {
+    return ndk::ScopedAStatus::ok();
+}
diff --git a/radio/aidl/vts/radio_network_test.cpp b/radio/aidl/vts/radio_network_test.cpp
new file mode 100644
index 0000000..93c4c35
--- /dev/null
+++ b/radio/aidl/vts/radio_network_test.cpp
@@ -0,0 +1,265 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <aidl/android/hardware/radio/RadioAccessFamily.h>
+#include <aidl/android/hardware/radio/config/IRadioConfig.h>
+#include <android-base/logging.h>
+#include <android/binder_manager.h>
+
+#include "radio_network_utils.h"
+
+#define ASSERT_OK(ret) ASSERT_TRUE(ret.isOk())
+
+void RadioNetworkTest::SetUp() {
+    std::string serviceName = GetParam();
+
+    if (!isServiceValidForDeviceConfiguration(serviceName)) {
+        ALOGI("Skipped the test due to device configuration.");
+        GTEST_SKIP();
+    }
+
+    radio_network = IRadioNetwork::fromBinder(
+            ndk::SpAIBinder(AServiceManager_waitForService(GetParam().c_str())));
+    ASSERT_NE(nullptr, radio_network.get());
+
+    radioRsp_network = ndk::SharedRefBase::make<RadioNetworkResponse>(*this);
+    ASSERT_NE(nullptr, radioRsp_network.get());
+
+    count_ = 0;
+
+    radioInd_network = ndk::SharedRefBase::make<RadioNetworkIndication>(*this);
+    ASSERT_NE(nullptr, radioInd_network.get());
+
+    radio_network->setResponseFunctions(radioRsp_network, radioInd_network);
+
+    // Assert IRadioSim exists and SIM is present before testing
+    radio_sim = sim::IRadioSim::fromBinder(ndk::SpAIBinder(
+            AServiceManager_waitForService("android.hardware.radio.sim.IRadioSim/slot1")));
+    ASSERT_NE(nullptr, radio_sim.get());
+    updateSimCardStatus();
+    EXPECT_EQ(CardStatus::STATE_PRESENT, cardStatus.cardState);
+
+    // Assert IRadioConfig exists before testing
+    radio_config = config::IRadioConfig::fromBinder(ndk::SpAIBinder(
+            AServiceManager_waitForService("android.hardware.radio.config.IRadioConfig/default")));
+    ASSERT_NE(nullptr, radio_config.get());
+}
+
+/*
+ * Test IRadioNetwork.setAllowedNetworkTypesBitmap for the response returned.
+ */
+TEST_P(RadioNetworkTest, setAllowedNetworkTypesBitmap) {
+    serial = GetRandomSerialNumber();
+    int32_t allowedNetworkTypesBitmap = static_cast<int32_t>(RadioAccessFamily::LTE);
+
+    radio_network->setAllowedNetworkTypesBitmap(serial, allowedNetworkTypesBitmap);
+
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_network->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_network->rspInfo.serial);
+    ASSERT_TRUE(CheckAnyOfErrors(
+            radioRsp_network->rspInfo.error,
+            {RadioError::NONE, RadioError::RADIO_NOT_AVAILABLE, RadioError::OPERATION_NOT_ALLOWED,
+             RadioError::MODE_NOT_SUPPORTED, RadioError::INTERNAL_ERR, RadioError::MODEM_ERR,
+             RadioError::INVALID_ARGUMENTS, RadioError::REQUEST_NOT_SUPPORTED,
+             RadioError::NO_RESOURCES}));
+}
+
+/*
+ * Test IRadioNetwork.getAllowedNetworkTypesBitmap for the response returned.
+ */
+TEST_P(RadioNetworkTest, getAllowedNetworkTypesBitmap) {
+    serial = GetRandomSerialNumber();
+    int32_t allowedNetworkTypesBitmap = static_cast<int32_t>(RadioAccessFamily::LTE);
+
+    radio_network->setAllowedNetworkTypesBitmap(serial, allowedNetworkTypesBitmap);
+
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_network->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_network->rspInfo.serial);
+
+    if (radioRsp_network->rspInfo.error == RadioError::NONE) {
+        sleep(3);  // wait for modem
+        serial = GetRandomSerialNumber();
+        radio_network->getAllowedNetworkTypesBitmap(serial);
+
+        EXPECT_EQ(std::cv_status::no_timeout, wait());
+        EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_network->rspInfo.type);
+        EXPECT_EQ(serial, radioRsp_network->rspInfo.serial);
+        ASSERT_TRUE(CheckAnyOfErrors(
+                radioRsp_network->rspInfo.error,
+                {RadioError::NONE, RadioError::RADIO_NOT_AVAILABLE, RadioError::INTERNAL_ERR,
+                 RadioError::OPERATION_NOT_ALLOWED, RadioError::MODE_NOT_SUPPORTED,
+                 RadioError::INVALID_ARGUMENTS, RadioError::MODEM_ERR,
+                 RadioError::REQUEST_NOT_SUPPORTED, RadioError::NO_RESOURCES}));
+    }
+}
+
+/*
+ * Test IRadioNetwork.setNrDualConnectivityState() for the response returned.
+ */
+TEST_P(RadioNetworkTest, setNrDualConnectivityState) {
+    serial = GetRandomSerialNumber();
+
+    ndk::ScopedAStatus res =
+            radio_network->setNrDualConnectivityState(serial, NrDualConnectivityState::DISABLE);
+    ASSERT_OK(res);
+
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_network->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_network->rspInfo.serial);
+    if (getRadioHalCapabilities()) {
+        ASSERT_TRUE(CheckAnyOfErrors(radioRsp_network->rspInfo.error,
+                                     {RadioError::REQUEST_NOT_SUPPORTED}));
+    } else {
+        ASSERT_TRUE(CheckAnyOfErrors(
+                radioRsp_network->rspInfo.error,
+                {RadioError::RADIO_NOT_AVAILABLE, RadioError::INTERNAL_ERR,
+                 RadioError::INVALID_STATE, RadioError::REQUEST_NOT_SUPPORTED, RadioError::NONE}));
+    }
+}
+
+/*
+ * Test IRadioNetwork.isNrDualConnectivityEnabled() for the response returned.
+ */
+TEST_P(RadioNetworkTest, isNrDualConnectivityEnabled) {
+    serial = GetRandomSerialNumber();
+
+    ndk::ScopedAStatus res = radio_network->isNrDualConnectivityEnabled(serial);
+    ASSERT_OK(res);
+
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_network->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_network->rspInfo.serial);
+    if (getRadioHalCapabilities()) {
+        ASSERT_TRUE(CheckAnyOfErrors(radioRsp_network->rspInfo.error,
+                                     {RadioError::REQUEST_NOT_SUPPORTED}));
+    } else {
+        ASSERT_TRUE(CheckAnyOfErrors(
+                radioRsp_network->rspInfo.error,
+                {RadioError::RADIO_NOT_AVAILABLE, RadioError::INTERNAL_ERR, RadioError::NONE}));
+    }
+}
+
+void RadioNetworkTest::invokeAndExpectResponse(
+        std::function<ndk::ScopedAStatus(int32_t serial)> request,
+        std::vector<RadioError> errors_to_check) {
+    serial = GetRandomSerialNumber();
+
+    ndk::ScopedAStatus res = request(serial);
+    ASSERT_OK(res);
+
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_network->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_network->rspInfo.serial);
+    ASSERT_TRUE(CheckAnyOfErrors(radioRsp_network->rspInfo.error, errors_to_check));
+}
+
+/*
+ * Test IRadioNetwork.getUsageSetting()
+ *
+ * Verify that the usage setting can be retrieved.
+ */
+TEST_P(RadioNetworkTest, getUsageSetting) {
+    invokeAndExpectResponse([&](int serial) { return radio_network->getUsageSetting(serial); },
+                            {RadioError::RADIO_NOT_AVAILABLE, RadioError::INVALID_STATE,
+                             RadioError::SIM_ABSENT, RadioError::INTERNAL_ERR, RadioError::NONE});
+
+    ASSERT_TRUE(radioRsp_network->usageSetting == UsageSetting::VOICE_CENTRIC ||
+                radioRsp_network->usageSetting == UsageSetting::DATA_CENTRIC);
+}
+
+void RadioNetworkTest::testSetUsageSetting_InvalidValues(std::vector<RadioError> errors) {
+    invokeAndExpectResponse(
+            [&](int serial) {
+                return radio_network->setUsageSetting(serial,
+                                                      UsageSetting(0) /*below valid range*/);
+            },
+            errors);
+    invokeAndExpectResponse(
+            [&](int serial) {
+                return radio_network->setUsageSetting(serial, UsageSetting(-1) /*negative*/);
+            },
+            errors);
+    invokeAndExpectResponse(
+            [&](int serial) {
+                return radio_network->setUsageSetting(serial,
+                                                      UsageSetting(3) /*above valid range*/);
+            },
+            errors);
+}
+
+/*
+ * Test IRadioNetwork.setUsageSetting() and IRadioNetwork.getUsageSetting()
+ *
+ * Verify the following:
+ * -That the usage setting can be retrieved.
+ * -That the usage setting can be successfully set to allowed values.
+ * -That the usage setting cannot be set to invalid values.
+ */
+TEST_P(RadioNetworkTest, setUsageSetting) {
+    invokeAndExpectResponse([&](int serial) { return radio_network->getUsageSetting(serial); },
+                            {RadioError::RADIO_NOT_AVAILABLE, RadioError::INVALID_STATE,
+                             RadioError::SIM_ABSENT, RadioError::INTERNAL_ERR, RadioError::NONE});
+
+    if (radioRsp_network->rspInfo.error != RadioError::NONE) {
+        // Test only for invalid values, with the only allowable response being the same error
+        // that was previously provided, or an error indicating invalid arguments.
+        testSetUsageSetting_InvalidValues(
+                {radioRsp_network->rspInfo.error, RadioError::INVALID_ARGUMENTS});
+        // It is unsafe to proceed with setting valid values without knowing the starting value, but
+        // we expect errors anyway, so not necessary.
+        return;
+    } else {
+        // Because querying succeeded, the device is in a valid state to test for invalid values
+        // and the only thing that can change is that we expect to have an EINVAL return each time.
+        testSetUsageSetting_InvalidValues({RadioError::INVALID_ARGUMENTS});
+    }
+
+    // Store the original setting value to reset later.
+    const UsageSetting originalSetting = radioRsp_network->usageSetting;
+
+    // Choose the "other" value that is not the current value for test.
+    const UsageSetting testSetting = radioRsp_network->usageSetting == UsageSetting::VOICE_CENTRIC
+                                             ? UsageSetting::DATA_CENTRIC
+                                             : UsageSetting::VOICE_CENTRIC;
+
+    // Set an alternative setting; it may either succeed or be disallowed as out of range for
+    // the current device (if the device only supports its current mode).
+    invokeAndExpectResponse(
+            [&](int serial) { return radio_network->setUsageSetting(serial, testSetting); },
+            {RadioError::INVALID_ARGUMENTS, RadioError::NONE});
+
+    // If there was no error, then we expect the test setting to be set, or if there is an error
+    // we expect the original setting to be maintained.
+    const UsageSetting expectedSetting =
+            radioRsp_network->rspInfo.error == RadioError::NONE ? testSetting : originalSetting;
+    invokeAndExpectResponse([&](int serial) { return radio_network->getUsageSetting(serial); },
+                            {RadioError::NONE});
+
+    const UsageSetting updatedSetting = radioRsp_network->usageSetting;
+
+    // Re-set the original setting, which must always succeed.
+    invokeAndExpectResponse(
+            [&](int serial) { return radio_network->setUsageSetting(serial, originalSetting); },
+            {RadioError::NONE});
+
+    // Check that indeed the updated setting was set. We do this after resetting to original
+    // conditions to avoid early-exiting the test and leaving the device in a modified state.
+    ASSERT_TRUE(expectedSetting == updatedSetting);
+    // Check that indeed the original setting was reset.
+    ASSERT_TRUE(originalSetting == radioRsp_network->usageSetting);
+}
diff --git a/radio/aidl/vts/radio_network_utils.h b/radio/aidl/vts/radio_network_utils.h
new file mode 100644
index 0000000..9f76769
--- /dev/null
+++ b/radio/aidl/vts/radio_network_utils.h
@@ -0,0 +1,221 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/radio/network/BnRadioNetworkIndication.h>
+#include <aidl/android/hardware/radio/network/BnRadioNetworkResponse.h>
+#include <aidl/android/hardware/radio/network/IRadioNetwork.h>
+
+#include "radio_aidl_hal_utils.h"
+
+using namespace aidl::android::hardware::radio::network;
+
+class RadioNetworkTest;
+
+/* Callback class for radio network response */
+class RadioNetworkResponse : public BnRadioNetworkResponse {
+  protected:
+    RadioServiceTest& parent_network;
+
+  public:
+    RadioNetworkResponse(RadioServiceTest& parent_network);
+    virtual ~RadioNetworkResponse() = default;
+
+    RadioResponseInfo rspInfo;
+    std::vector<RadioBandMode> radioBandModes;
+    std::vector<OperatorInfo> networkInfos;
+    bool isNrDualConnectivityEnabled;
+    int networkTypeBitmapResponse;
+    RegStateResult voiceRegResp;
+    CellIdentity barringCellIdentity;
+    std::vector<BarringInfo> barringInfos;
+    UsageSetting usageSetting;
+
+    virtual ndk::ScopedAStatus acknowledgeRequest(int32_t serial) override;
+
+    virtual ndk::ScopedAStatus getAllowedNetworkTypesBitmapResponse(
+            const RadioResponseInfo& info, const int32_t networkTypeBitmap) override;
+
+    virtual ndk::ScopedAStatus getAvailableBandModesResponse(
+            const RadioResponseInfo& info, const std::vector<RadioBandMode>& bandModes) override;
+
+    virtual ndk::ScopedAStatus getAvailableNetworksResponse(
+            const RadioResponseInfo& info, const std::vector<OperatorInfo>& networkInfos) override;
+
+    virtual ndk::ScopedAStatus getBarringInfoResponse(
+            const RadioResponseInfo& info, const CellIdentity& cellIdentity,
+            const std::vector<BarringInfo>& barringInfos) override;
+
+    virtual ndk::ScopedAStatus getCdmaRoamingPreferenceResponse(const RadioResponseInfo& info,
+                                                                CdmaRoamingType type) override;
+
+    virtual ndk::ScopedAStatus getCellInfoListResponse(
+            const RadioResponseInfo& info, const std::vector<CellInfo>& cellInfo) override;
+
+    virtual ndk::ScopedAStatus getDataRegistrationStateResponse(
+            const RadioResponseInfo& info, const RegStateResult& dataRegResponse) override;
+
+    virtual ndk::ScopedAStatus getImsRegistrationStateResponse(
+            const RadioResponseInfo& info, bool isRegistered,
+            RadioTechnologyFamily ratFamily) override;
+
+    virtual ndk::ScopedAStatus getNetworkSelectionModeResponse(const RadioResponseInfo& info,
+                                                               bool manual) override;
+
+    virtual ndk::ScopedAStatus getOperatorResponse(const RadioResponseInfo& info,
+                                                   const std::string& longName,
+                                                   const std::string& shortName,
+                                                   const std::string& numeric) override;
+
+    virtual ndk::ScopedAStatus getSignalStrengthResponse(
+            const RadioResponseInfo& info, const SignalStrength& sigStrength) override;
+
+    virtual ndk::ScopedAStatus getSystemSelectionChannelsResponse(
+            const RadioResponseInfo& info,
+            const std::vector<RadioAccessSpecifier>& specifier) override;
+
+    virtual ndk::ScopedAStatus getUsageSettingResponse(const RadioResponseInfo& info,
+                                                       UsageSetting usageSetting) override;
+
+    virtual ndk::ScopedAStatus getVoiceRadioTechnologyResponse(const RadioResponseInfo& info,
+                                                               RadioTechnology rat) override;
+
+    virtual ndk::ScopedAStatus getVoiceRegistrationStateResponse(
+            const RadioResponseInfo& info, const RegStateResult& voiceRegResponse) override;
+
+    virtual ndk::ScopedAStatus isNrDualConnectivityEnabledResponse(const RadioResponseInfo& info,
+                                                                   bool isEnabled) override;
+
+    virtual ndk::ScopedAStatus setAllowedNetworkTypesBitmapResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setBandModeResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setBarringPasswordResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setCdmaRoamingPreferenceResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setCellInfoListRateResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setIndicationFilterResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setLinkCapacityReportingCriteriaResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setLocationUpdatesResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setNetworkSelectionModeAutomaticResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setNetworkSelectionModeManualResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setNrDualConnectivityStateResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setSignalStrengthReportingCriteriaResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setSuppServiceNotificationsResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setSystemSelectionChannelsResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setUsageSettingResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus startNetworkScanResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus stopNetworkScanResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus supplyNetworkDepersonalizationResponse(
+            const RadioResponseInfo& info, int32_t remainingRetries) override;
+};
+
+/* Callback class for radio network indication */
+class RadioNetworkIndication : public BnRadioNetworkIndication {
+  protected:
+    RadioServiceTest& parent_network;
+
+  public:
+    RadioNetworkIndication(RadioServiceTest& parent_network);
+    virtual ~RadioNetworkIndication() = default;
+
+    virtual ndk::ScopedAStatus barringInfoChanged(
+            RadioIndicationType type, const CellIdentity& cellIdentity,
+            const std::vector<BarringInfo>& barringInfos) override;
+
+    virtual ndk::ScopedAStatus cdmaPrlChanged(RadioIndicationType type, int32_t version) override;
+
+    virtual ndk::ScopedAStatus cellInfoList(RadioIndicationType type,
+                                            const std::vector<CellInfo>& records) override;
+
+    virtual ndk::ScopedAStatus currentLinkCapacityEstimate(
+            RadioIndicationType type, const LinkCapacityEstimate& lce) override;
+
+    virtual ndk::ScopedAStatus currentPhysicalChannelConfigs(
+            RadioIndicationType type, const std::vector<PhysicalChannelConfig>& configs) override;
+
+    virtual ndk::ScopedAStatus currentSignalStrength(RadioIndicationType type,
+                                                     const SignalStrength& signalStrength) override;
+
+    virtual ndk::ScopedAStatus imsNetworkStateChanged(RadioIndicationType type) override;
+
+    virtual ndk::ScopedAStatus networkScanResult(RadioIndicationType type,
+                                                 const NetworkScanResult& result) override;
+
+    virtual ndk::ScopedAStatus networkStateChanged(RadioIndicationType type) override;
+
+    virtual ndk::ScopedAStatus nitzTimeReceived(RadioIndicationType type,
+                                                const std::string& nitzTime, int64_t receivedTimeMs,
+                                                int64_t ageMs) override;
+
+    virtual ndk::ScopedAStatus registrationFailed(RadioIndicationType type,
+                                                  const CellIdentity& cellIdentity,
+                                                  const std::string& chosenPlmn, int32_t domain,
+                                                  int32_t causeCode,
+                                                  int32_t additionalCauseCode) override;
+
+    virtual ndk::ScopedAStatus restrictedStateChanged(RadioIndicationType type,
+                                                      PhoneRestrictedState state) override;
+
+    virtual ndk::ScopedAStatus suppSvcNotify(RadioIndicationType type,
+                                             const SuppSvcNotification& suppSvc) override;
+
+    virtual ndk::ScopedAStatus voiceRadioTechChanged(RadioIndicationType type,
+                                                     RadioTechnology rat) override;
+};
+
+// The main test class for Radio AIDL Network.
+class RadioNetworkTest : public ::testing::TestWithParam<std::string>, public RadioServiceTest {
+  public:
+    virtual void SetUp() override;
+
+    /* radio network service handle */
+    std::shared_ptr<IRadioNetwork> radio_network;
+    /* radio network response handle */
+    std::shared_ptr<RadioNetworkResponse> radioRsp_network;
+    /* radio network indication handle */
+    std::shared_ptr<RadioNetworkIndication> radioInd_network;
+
+    void invokeAndExpectResponse(std::function<ndk::ScopedAStatus(int32_t serial)> request,
+                                 std::vector<RadioError> errors_to_check);
+
+    // Helper function to reduce copy+paste
+    void testSetUsageSetting_InvalidValues(std::vector<RadioError> errors);
+};
diff --git a/radio/aidl/vts/radio_sim_indication.cpp b/radio/aidl/vts/radio_sim_indication.cpp
new file mode 100644
index 0000000..c03d947
--- /dev/null
+++ b/radio/aidl/vts/radio_sim_indication.cpp
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "radio_sim_utils.h"
+
+RadioSimIndication::RadioSimIndication(RadioServiceTest& parent) : parent_sim(parent) {}
+
+ndk::ScopedAStatus RadioSimIndication::carrierInfoForImsiEncryption(RadioIndicationType /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimIndication::cdmaSubscriptionSourceChanged(
+        RadioIndicationType /*type*/, CdmaSubscriptionSource /*cdmaSource*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimIndication::simPhonebookChanged(RadioIndicationType /*type*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimIndication::simPhonebookRecordsReceived(
+        RadioIndicationType /*type*/, PbReceivedStatus /*status*/,
+        const std::vector<PhonebookRecordInfo>& /*records*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimIndication::simRefresh(RadioIndicationType /*type*/,
+                                                  const SimRefreshResult& /*refreshResult*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimIndication::simStatusChanged(RadioIndicationType /*type*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimIndication::stkEventNotify(RadioIndicationType /*type*/,
+                                                      const std::string& /*cmd*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimIndication::stkProactiveCommand(RadioIndicationType /*type*/,
+                                                           const std::string& /*cmd*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimIndication::stkSessionEnd(RadioIndicationType /*type*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimIndication::subscriptionStatusChanged(RadioIndicationType /*type*/,
+                                                                 bool /*activate*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimIndication::uiccApplicationsEnablementChanged(
+        RadioIndicationType /*type*/, bool /*enabled*/) {
+    return ndk::ScopedAStatus::ok();
+}
diff --git a/radio/aidl/vts/radio_sim_response.cpp b/radio/aidl/vts/radio_sim_response.cpp
new file mode 100644
index 0000000..a783f43
--- /dev/null
+++ b/radio/aidl/vts/radio_sim_response.cpp
@@ -0,0 +1,209 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "radio_sim_utils.h"
+
+RadioSimResponse::RadioSimResponse(RadioServiceTest& parent) : parent_sim(parent) {}
+
+ndk::ScopedAStatus RadioSimResponse::acknowledgeRequest(int32_t /*serial*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::areUiccApplicationsEnabledResponse(
+        const RadioResponseInfo& /*info*/, bool /*enabled*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::changeIccPin2ForAppResponse(const RadioResponseInfo& /*info*/,
+                                                                 int32_t /*remainingRetries*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::changeIccPinForAppResponse(const RadioResponseInfo& /*info*/,
+                                                                int32_t /*remainingRetries*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::enableUiccApplicationsResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::getAllowedCarriersResponse(
+        const RadioResponseInfo& /*info*/, const CarrierRestrictions& /*carriers*/,
+        SimLockMultiSimPolicy /*multiSimPolicy*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::getCdmaSubscriptionResponse(
+        const RadioResponseInfo& /*info*/, const std::string& /*mdn*/, const std::string& /*hSid*/,
+        const std::string& /*hNid*/, const std::string& /*min*/, const std::string& /*prl*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::getCdmaSubscriptionSourceResponse(
+        const RadioResponseInfo& /*info*/, CdmaSubscriptionSource /*source*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::getFacilityLockForAppResponse(
+        const RadioResponseInfo& /*info*/, int32_t /*response*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::getIccCardStatusResponse(const RadioResponseInfo& info,
+                                                              const CardStatus& card_status) {
+    rspInfo = info;
+    cardStatus = card_status;
+    parent_sim.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::getImsiForAppResponse(const RadioResponseInfo& /*info*/,
+                                                           const std::string& /*imsi*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::getSimPhonebookCapacityResponse(
+        const RadioResponseInfo& info, const PhonebookCapacity& pbCapacity) {
+    rspInfo = info;
+    capacity = pbCapacity;
+    parent_sim.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::getSimPhonebookRecordsResponse(const RadioResponseInfo& info) {
+    rspInfo = info;
+    parent_sim.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::iccCloseLogicalChannelResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::iccIoForAppResponse(const RadioResponseInfo& /*info*/,
+                                                         const IccIoResult& /*iccIo*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::iccOpenLogicalChannelResponse(
+        const RadioResponseInfo& /*info*/, int32_t /*channelId*/,
+        const std::vector<uint8_t>& /*selectResponse*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::iccTransmitApduBasicChannelResponse(
+        const RadioResponseInfo& /*info*/, const IccIoResult& /*result*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::iccTransmitApduLogicalChannelResponse(
+        const RadioResponseInfo& /*info*/, const IccIoResult& /*result*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::reportStkServiceIsRunningResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::requestIccSimAuthenticationResponse(
+        const RadioResponseInfo& /*info*/, const IccIoResult& /*result*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::sendEnvelopeResponse(const RadioResponseInfo& /*info*/,
+                                                          const std::string& /*commandResponse*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::sendEnvelopeWithStatusResponse(
+        const RadioResponseInfo& /*info*/, const IccIoResult& /*iccIo*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::sendTerminalResponseToSimResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::setAllowedCarriersResponse(const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::setCarrierInfoForImsiEncryptionResponse(
+        const RadioResponseInfo& info) {
+    rspInfo = info;
+    parent_sim.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::setCdmaSubscriptionSourceResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::setFacilityLockForAppResponse(
+        const RadioResponseInfo& /*info*/, int32_t /*retry*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::setSimCardPowerResponse(const RadioResponseInfo& info) {
+    rspInfo = info;
+    parent_sim.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::setUiccSubscriptionResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::supplyIccPin2ForAppResponse(const RadioResponseInfo& /*info*/,
+                                                                 int32_t /*remainingRetries*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::supplyIccPinForAppResponse(const RadioResponseInfo& /*info*/,
+                                                                int32_t /*remainingRetries*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::supplyIccPuk2ForAppResponse(const RadioResponseInfo& /*info*/,
+                                                                 int32_t /*remainingRetries*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::supplyIccPukForAppResponse(const RadioResponseInfo& /*info*/,
+                                                                int32_t /*remainingRetries*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::supplySimDepersonalizationResponse(
+        const RadioResponseInfo& /*info*/, PersoSubstate /*persoType*/,
+        int32_t /*remainingRetries*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioSimResponse::updateSimPhonebookRecordsResponse(
+        const RadioResponseInfo& info, int32_t recordIndex) {
+    rspInfo = info;
+    updatedRecordIndex = recordIndex;
+    parent_sim.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
diff --git a/radio/aidl/vts/radio_sim_test.cpp b/radio/aidl/vts/radio_sim_test.cpp
new file mode 100644
index 0000000..5db77f6
--- /dev/null
+++ b/radio/aidl/vts/radio_sim_test.cpp
@@ -0,0 +1,262 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <aidl/android/hardware/radio/config/IRadioConfig.h>
+#include <android-base/logging.h>
+#include <android/binder_manager.h>
+
+#include "radio_sim_utils.h"
+
+#define ASSERT_OK(ret) ASSERT_TRUE(ret.isOk())
+
+void RadioSimTest::SetUp() {
+    std::string serviceName = GetParam();
+
+    if (!isServiceValidForDeviceConfiguration(serviceName)) {
+        ALOGI("Skipped the test due to device configuration.");
+        GTEST_SKIP();
+    }
+
+    radio_sim = IRadioSim::fromBinder(
+            ndk::SpAIBinder(AServiceManager_waitForService(GetParam().c_str())));
+    ASSERT_NE(nullptr, radio_sim.get());
+
+    radioRsp_sim = ndk::SharedRefBase::make<RadioSimResponse>(*this);
+    ASSERT_NE(nullptr, radioRsp_sim.get());
+
+    count_ = 0;
+
+    radioInd_sim = ndk::SharedRefBase::make<RadioSimIndication>(*this);
+    ASSERT_NE(nullptr, radioInd_sim.get());
+
+    radio_sim->setResponseFunctions(radioRsp_sim, radioInd_sim);
+    // Assert SIM is present before testing
+    updateSimCardStatus();
+    EXPECT_EQ(CardStatus::STATE_PRESENT, cardStatus.cardState);
+
+    // Assert IRadioConfig exists before testing
+    radio_config = config::IRadioConfig::fromBinder(ndk::SpAIBinder(
+            AServiceManager_waitForService("android.hardware.radio.config.IRadioConfig/default")));
+    ASSERT_NE(nullptr, radio_config.get());
+}
+
+void RadioSimTest::updateSimCardStatus() {
+    serial = GetRandomSerialNumber();
+    radio_sim->getIccCardStatus(serial);
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_sim->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_sim->rspInfo.serial);
+    EXPECT_EQ(RadioError::NONE, radioRsp_sim->rspInfo.error);
+}
+
+/*
+ * Test IRadioSim.setSimCardPower() for the response returned.
+ */
+TEST_P(RadioSimTest, setSimCardPower) {
+    /* Test setSimCardPower power down */
+    serial = GetRandomSerialNumber();
+    radio_sim->setSimCardPower(serial, CardPowerState::POWER_DOWN);
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_sim->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_sim->rspInfo.serial);
+    ASSERT_TRUE(CheckAnyOfErrors(radioRsp_sim->rspInfo.error,
+                                 {RadioError::NONE, RadioError::INVALID_ARGUMENTS,
+                                  RadioError::RADIO_NOT_AVAILABLE, RadioError::SIM_ERR}));
+
+    // setSimCardPower does not return  until the request is handled, and should not trigger
+    // CardStatus::STATE_ABSENT when turning off power
+    if (radioRsp_sim->rspInfo.error == RadioError::NONE) {
+        /* Wait some time for setting sim power down and then verify it */
+        updateSimCardStatus();
+        // We cannot assert the consistency of CardState here due to b/203031664
+        // EXPECT_EQ(CardStatus::STATE_PRESENT, cardStatus.cardState);
+        // applications should be an empty vector of AppStatus
+        EXPECT_EQ(0, cardStatus.applications.size());
+    }
+
+    // Give some time for modem to fully power down the SIM card
+    sleep(MODEM_SET_SIM_POWER_DELAY_IN_SECONDS);
+
+    /* Test setSimCardPower power up */
+    serial = GetRandomSerialNumber();
+    radio_sim->setSimCardPower(serial, CardPowerState::POWER_UP);
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_sim->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_sim->rspInfo.serial);
+    ASSERT_TRUE(CheckAnyOfErrors(radioRsp_sim->rspInfo.error,
+                                 {RadioError::NONE, RadioError::INVALID_ARGUMENTS,
+                                  RadioError::RADIO_NOT_AVAILABLE, RadioError::SIM_ERR}));
+
+    // Give some time for modem to fully power up the SIM card
+    sleep(MODEM_SET_SIM_POWER_DELAY_IN_SECONDS);
+
+    // setSimCardPower does not return  until the request is handled. Just verify that we still
+    // have CardStatus::STATE_PRESENT after turning the power back on
+    if (radioRsp_sim->rspInfo.error == RadioError::NONE) {
+        updateSimCardStatus();
+        EXPECT_EQ(CardStatus::STATE_PRESENT, cardStatus.cardState);
+    }
+}
+
+/*
+ * Test IRadioSim.setCarrierInfoForImsiEncryption() for the response returned.
+ */
+TEST_P(RadioSimTest, setCarrierInfoForImsiEncryption) {
+    serial = GetRandomSerialNumber();
+    ImsiEncryptionInfo imsiInfo;
+    imsiInfo.mcc = "310";
+    imsiInfo.mnc = "004";
+    imsiInfo.carrierKey = (std::vector<uint8_t>){1, 2, 3, 4, 5, 6};
+    imsiInfo.keyIdentifier = "Test";
+    imsiInfo.expirationTime = 20180101;
+    imsiInfo.keyType = ImsiEncryptionInfo::PUBLIC_KEY_TYPE_EPDG;
+
+    radio_sim->setCarrierInfoForImsiEncryption(serial, imsiInfo);
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_sim->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_sim->rspInfo.serial);
+
+    if (cardStatus.cardState == CardStatus::STATE_ABSENT) {
+        ASSERT_TRUE(CheckAnyOfErrors(radioRsp_sim->rspInfo.error,
+                                     {RadioError::NONE, RadioError::REQUEST_NOT_SUPPORTED}));
+    }
+}
+
+/*
+ * Test IRadioSim.getSimPhonebookRecords() for the response returned.
+ */
+TEST_P(RadioSimTest, getSimPhonebookRecords) {
+    serial = GetRandomSerialNumber();
+    radio_sim->getSimPhonebookRecords(serial);
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_sim->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_sim->rspInfo.serial);
+    if (cardStatus.cardState == CardStatus::STATE_ABSENT) {
+        ASSERT_TRUE(
+                CheckAnyOfErrors(radioRsp_sim->rspInfo.error,
+                                 {RadioError::INVALID_SIM_STATE, RadioError::RADIO_NOT_AVAILABLE,
+                                  RadioError::MODEM_ERR, RadioError::INVALID_ARGUMENTS,
+                                  RadioError::REQUEST_NOT_SUPPORTED},
+                                 CHECK_GENERAL_ERROR));
+    } else if (cardStatus.cardState == CardStatus::STATE_PRESENT) {
+        ASSERT_TRUE(CheckAnyOfErrors(radioRsp_sim->rspInfo.error,
+                                     {RadioError::NONE, RadioError::REQUEST_NOT_SUPPORTED},
+                                     CHECK_GENERAL_ERROR));
+    }
+}
+
+/*
+ * Test IRadioSim.getSimPhonebookCapacity for the response returned.
+ */
+TEST_P(RadioSimTest, getSimPhonebookCapacity) {
+    serial = GetRandomSerialNumber();
+    radio_sim->getSimPhonebookCapacity(serial);
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_sim->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_sim->rspInfo.serial);
+    if (cardStatus.cardState == CardStatus::STATE_ABSENT) {
+        ASSERT_TRUE(
+                CheckAnyOfErrors(radioRsp_sim->rspInfo.error,
+                                 {RadioError::INVALID_SIM_STATE, RadioError::RADIO_NOT_AVAILABLE,
+                                  RadioError::MODEM_ERR, RadioError::INVALID_ARGUMENTS,
+                                  RadioError::REQUEST_NOT_SUPPORTED},
+                                 CHECK_GENERAL_ERROR));
+    } else if (cardStatus.cardState == CardStatus::STATE_PRESENT) {
+        ASSERT_TRUE(CheckAnyOfErrors(radioRsp_sim->rspInfo.error,
+                                     {RadioError::NONE, RadioError::REQUEST_NOT_SUPPORTED},
+                                     CHECK_GENERAL_ERROR));
+
+        PhonebookCapacity pbCapacity = radioRsp_sim->capacity;
+        if (pbCapacity.maxAdnRecords > 0) {
+            EXPECT_TRUE(pbCapacity.maxNameLen > 0 && pbCapacity.maxNumberLen > 0);
+            EXPECT_TRUE(pbCapacity.usedAdnRecords <= pbCapacity.maxAdnRecords);
+        }
+
+        if (pbCapacity.maxEmailRecords > 0) {
+            EXPECT_TRUE(pbCapacity.maxEmailLen > 0);
+            EXPECT_TRUE(pbCapacity.usedEmailRecords <= pbCapacity.maxEmailRecords);
+        }
+
+        if (pbCapacity.maxAdditionalNumberRecords > 0) {
+            EXPECT_TRUE(pbCapacity.maxAdditionalNumberLen > 0);
+            EXPECT_TRUE(pbCapacity.usedAdditionalNumberRecords <=
+                        pbCapacity.maxAdditionalNumberRecords);
+        }
+    }
+}
+
+/*
+ * Test IRadioSim.updateSimPhonebookRecords() for the response returned.
+ */
+TEST_P(RadioSimTest, updateSimPhonebookRecords) {
+    serial = GetRandomSerialNumber();
+    radio_sim->getSimPhonebookCapacity(serial);
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_sim->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_sim->rspInfo.serial);
+    if (cardStatus.cardState == CardStatus::STATE_ABSENT) {
+        ASSERT_TRUE(
+                CheckAnyOfErrors(radioRsp_sim->rspInfo.error,
+                                 {RadioError::INVALID_SIM_STATE, RadioError::RADIO_NOT_AVAILABLE,
+                                  RadioError::MODEM_ERR, RadioError::INVALID_ARGUMENTS,
+                                  RadioError::REQUEST_NOT_SUPPORTED},
+                                 CHECK_GENERAL_ERROR));
+    } else if (cardStatus.cardState == CardStatus::STATE_PRESENT) {
+        ASSERT_TRUE(CheckAnyOfErrors(radioRsp_sim->rspInfo.error,
+                                     {RadioError::NONE, RadioError::REQUEST_NOT_SUPPORTED},
+                                     CHECK_GENERAL_ERROR));
+        PhonebookCapacity pbCapacity = radioRsp_sim->capacity;
+
+        serial = GetRandomSerialNumber();
+        radio_sim->getSimPhonebookRecords(serial);
+
+        EXPECT_EQ(std::cv_status::no_timeout, wait());
+        EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_sim->rspInfo.type);
+        EXPECT_EQ(serial, radioRsp_sim->rspInfo.serial);
+        ASSERT_TRUE(CheckAnyOfErrors(radioRsp_sim->rspInfo.error,
+                                     {RadioError::NONE, RadioError::REQUEST_NOT_SUPPORTED},
+                                     CHECK_GENERAL_ERROR));
+
+        if (pbCapacity.maxAdnRecords > 0 && pbCapacity.usedAdnRecords < pbCapacity.maxAdnRecords) {
+            // Add a phonebook record
+            PhonebookRecordInfo recordInfo;
+            recordInfo.recordId = 0;
+            recordInfo.name = "ABC";
+            recordInfo.number = "1234567890";
+            serial = GetRandomSerialNumber();
+            radio_sim->updateSimPhonebookRecords(serial, recordInfo);
+
+            EXPECT_EQ(std::cv_status::no_timeout, wait());
+            EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_sim->rspInfo.type);
+            EXPECT_EQ(serial, radioRsp_sim->rspInfo.serial);
+            EXPECT_EQ(RadioError::NONE, radioRsp_sim->rspInfo.error);
+            int index = radioRsp_sim->updatedRecordIndex;
+            EXPECT_TRUE(index > 0);
+
+            // Deleted a phonebook record
+            recordInfo.recordId = index;
+            recordInfo.name = "";
+            recordInfo.number = "";
+            serial = GetRandomSerialNumber();
+            radio_sim->updateSimPhonebookRecords(serial, recordInfo);
+
+            EXPECT_EQ(std::cv_status::no_timeout, wait());
+            EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_sim->rspInfo.type);
+            EXPECT_EQ(serial, radioRsp_sim->rspInfo.serial);
+            EXPECT_EQ(RadioError::NONE, radioRsp_sim->rspInfo.error);
+        }
+    }
+}
diff --git a/radio/aidl/vts/radio_sim_utils.h b/radio/aidl/vts/radio_sim_utils.h
new file mode 100644
index 0000000..b5e365d
--- /dev/null
+++ b/radio/aidl/vts/radio_sim_utils.h
@@ -0,0 +1,205 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/radio/sim/BnRadioSimIndication.h>
+#include <aidl/android/hardware/radio/sim/BnRadioSimResponse.h>
+#include <aidl/android/hardware/radio/sim/IRadioSim.h>
+
+#include "radio_aidl_hal_utils.h"
+
+using namespace aidl::android::hardware::radio::sim;
+
+class RadioSimTest;
+
+/* Callback class for radio SIM response */
+class RadioSimResponse : public BnRadioSimResponse {
+  protected:
+    RadioServiceTest& parent_sim;
+
+  public:
+    RadioSimResponse(RadioServiceTest& parent_sim);
+    virtual ~RadioSimResponse() = default;
+
+    RadioResponseInfo rspInfo;
+    CarrierRestrictions carrierRestrictionsResp;
+    SimLockMultiSimPolicy multiSimPolicyResp;
+    bool canToggleUiccApplicationsEnablement;
+    bool areUiccApplicationsEnabled;
+    PhonebookCapacity capacity;
+    int32_t updatedRecordIndex;
+
+    virtual ndk::ScopedAStatus acknowledgeRequest(int32_t serial) override;
+
+    virtual ndk::ScopedAStatus areUiccApplicationsEnabledResponse(const RadioResponseInfo& info,
+                                                                  bool enabled) override;
+
+    virtual ndk::ScopedAStatus changeIccPin2ForAppResponse(const RadioResponseInfo& info,
+                                                           int32_t remainingRetries) override;
+
+    virtual ndk::ScopedAStatus changeIccPinForAppResponse(const RadioResponseInfo& info,
+                                                          int32_t remainingRetries) override;
+
+    virtual ndk::ScopedAStatus enableUiccApplicationsResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus getAllowedCarriersResponse(
+            const RadioResponseInfo& info, const CarrierRestrictions& carriers,
+            const SimLockMultiSimPolicy multiSimPolicy) override;
+
+    virtual ndk::ScopedAStatus getCdmaSubscriptionResponse(
+            const RadioResponseInfo& info, const std::string& mdn, const std::string& hSid,
+            const std::string& hNid, const std::string& min, const std::string& prl) override;
+
+    virtual ndk::ScopedAStatus getCdmaSubscriptionSourceResponse(
+            const RadioResponseInfo& info, CdmaSubscriptionSource source) override;
+
+    virtual ndk::ScopedAStatus getFacilityLockForAppResponse(const RadioResponseInfo& info,
+                                                             int32_t response) override;
+
+    virtual ndk::ScopedAStatus getIccCardStatusResponse(const RadioResponseInfo& info,
+                                                        const CardStatus& cardStatus) override;
+
+    virtual ndk::ScopedAStatus getImsiForAppResponse(const RadioResponseInfo& info,
+                                                     const std::string& imsi) override;
+
+    virtual ndk::ScopedAStatus getSimPhonebookCapacityResponse(
+            const RadioResponseInfo& info, const PhonebookCapacity& capacity) override;
+
+    virtual ndk::ScopedAStatus getSimPhonebookRecordsResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus iccCloseLogicalChannelResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus iccIoForAppResponse(const RadioResponseInfo& info,
+                                                   const IccIoResult& iccIo) override;
+
+    virtual ndk::ScopedAStatus iccOpenLogicalChannelResponse(
+            const RadioResponseInfo& info, int32_t channelId,
+            const std::vector<uint8_t>& selectResponse) override;
+
+    virtual ndk::ScopedAStatus iccTransmitApduBasicChannelResponse(
+            const RadioResponseInfo& info, const IccIoResult& result) override;
+
+    virtual ndk::ScopedAStatus iccTransmitApduLogicalChannelResponse(
+            const RadioResponseInfo& info, const IccIoResult& result) override;
+
+    virtual ndk::ScopedAStatus reportStkServiceIsRunningResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus requestIccSimAuthenticationResponse(
+            const RadioResponseInfo& info, const IccIoResult& result) override;
+
+    virtual ndk::ScopedAStatus sendEnvelopeResponse(const RadioResponseInfo& info,
+                                                    const std::string& commandResponse) override;
+
+    virtual ndk::ScopedAStatus sendEnvelopeWithStatusResponse(const RadioResponseInfo& info,
+                                                              const IccIoResult& iccIo) override;
+
+    virtual ndk::ScopedAStatus sendTerminalResponseToSimResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setAllowedCarriersResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setCarrierInfoForImsiEncryptionResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setCdmaSubscriptionSourceResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setFacilityLockForAppResponse(const RadioResponseInfo& info,
+                                                             int32_t retry) override;
+
+    virtual ndk::ScopedAStatus setSimCardPowerResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setUiccSubscriptionResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus supplyIccPin2ForAppResponse(const RadioResponseInfo& info,
+                                                           int32_t remainingRetries) override;
+
+    virtual ndk::ScopedAStatus supplyIccPinForAppResponse(const RadioResponseInfo& info,
+                                                          int32_t remainingRetries) override;
+
+    virtual ndk::ScopedAStatus supplyIccPuk2ForAppResponse(const RadioResponseInfo& info,
+                                                           int32_t remainingRetries) override;
+
+    virtual ndk::ScopedAStatus supplyIccPukForAppResponse(const RadioResponseInfo& info,
+                                                          int32_t remainingRetries) override;
+
+    virtual ndk::ScopedAStatus supplySimDepersonalizationResponse(
+            const RadioResponseInfo& info, PersoSubstate persoType,
+            int32_t remainingRetries) override;
+
+    virtual ndk::ScopedAStatus updateSimPhonebookRecordsResponse(
+            const RadioResponseInfo& info, int32_t updatedRecordIndex) override;
+};
+
+/* Callback class for radio SIM indication */
+class RadioSimIndication : public BnRadioSimIndication {
+  protected:
+    RadioServiceTest& parent_sim;
+
+  public:
+    RadioSimIndication(RadioServiceTest& parent_sim);
+    virtual ~RadioSimIndication() = default;
+
+    virtual ndk::ScopedAStatus carrierInfoForImsiEncryption(RadioIndicationType info) override;
+
+    virtual ndk::ScopedAStatus cdmaSubscriptionSourceChanged(
+            RadioIndicationType type, CdmaSubscriptionSource cdmaSource) override;
+
+    virtual ndk::ScopedAStatus simPhonebookChanged(RadioIndicationType type) override;
+
+    virtual ndk::ScopedAStatus simPhonebookRecordsReceived(
+            RadioIndicationType type, PbReceivedStatus status,
+            const std::vector<PhonebookRecordInfo>& records) override;
+
+    virtual ndk::ScopedAStatus simRefresh(RadioIndicationType type,
+                                          const SimRefreshResult& refreshResult) override;
+
+    virtual ndk::ScopedAStatus simStatusChanged(RadioIndicationType type) override;
+
+    virtual ndk::ScopedAStatus stkEventNotify(RadioIndicationType type,
+                                              const std::string& cmd) override;
+
+    virtual ndk::ScopedAStatus stkProactiveCommand(RadioIndicationType type,
+                                                   const std::string& cmd) override;
+
+    virtual ndk::ScopedAStatus stkSessionEnd(RadioIndicationType type) override;
+
+    virtual ndk::ScopedAStatus subscriptionStatusChanged(RadioIndicationType type,
+                                                         bool activate) override;
+
+    virtual ndk::ScopedAStatus uiccApplicationsEnablementChanged(RadioIndicationType type,
+                                                                 bool enabled) override;
+};
+
+// The main test class for Radio AIDL SIM.
+class RadioSimTest : public ::testing::TestWithParam<std::string>, public RadioServiceTest {
+  public:
+    virtual void SetUp() override;
+
+    /* Override updateSimCardStatus in RadioServiceTest to not call setResponseFunctions */
+    void updateSimCardStatus();
+
+    /* radio SIM service handle in RadioServiceTest */
+    /* radio SIM response handle */
+    std::shared_ptr<RadioSimResponse> radioRsp_sim;
+    /* radio SIM indication handle */
+    std::shared_ptr<RadioSimIndication> radioInd_sim;
+};
diff --git a/radio/aidl/vts/radio_voice_indication.cpp b/radio/aidl/vts/radio_voice_indication.cpp
new file mode 100644
index 0000000..d814c18
--- /dev/null
+++ b/radio/aidl/vts/radio_voice_indication.cpp
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "radio_voice_utils.h"
+
+RadioVoiceIndication::RadioVoiceIndication(RadioServiceTest& parent) : parent_voice(parent) {}
+
+ndk::ScopedAStatus RadioVoiceIndication::callRing(RadioIndicationType /*type*/, bool /*isGsm*/,
+                                                  const CdmaSignalInfoRecord& /*record*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceIndication::callStateChanged(RadioIndicationType /*type*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceIndication::cdmaCallWaiting(
+        RadioIndicationType /*type*/, const CdmaCallWaiting& /*callWaitingRecord*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceIndication::cdmaInfoRec(
+        RadioIndicationType /*type*/, const std::vector<CdmaInformationRecord>& /*records*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceIndication::cdmaOtaProvisionStatus(RadioIndicationType /*type*/,
+                                                                CdmaOtaProvisionStatus /*status*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceIndication::currentEmergencyNumberList(
+        RadioIndicationType /*type*/, const std::vector<EmergencyNumber>& /*emergencyNumberList*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceIndication::enterEmergencyCallbackMode(RadioIndicationType /*type*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceIndication::exitEmergencyCallbackMode(RadioIndicationType /*type*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceIndication::indicateRingbackTone(RadioIndicationType /*type*/,
+                                                              bool /*start*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceIndication::onSupplementaryServiceIndication(
+        RadioIndicationType /*type*/, const StkCcUnsolSsResult& /*ss*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceIndication::resendIncallMute(RadioIndicationType /*type*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceIndication::srvccStateNotify(RadioIndicationType /*type*/,
+                                                          SrvccState /*state*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceIndication::stkCallControlAlphaNotify(RadioIndicationType /*type*/,
+                                                                   const std::string& /*alpha*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceIndication::stkCallSetup(RadioIndicationType /*type*/,
+                                                      int64_t /*timeout*/) {
+    return ndk::ScopedAStatus::ok();
+}
diff --git a/radio/aidl/vts/radio_voice_response.cpp b/radio/aidl/vts/radio_voice_response.cpp
new file mode 100644
index 0000000..a491613
--- /dev/null
+++ b/radio/aidl/vts/radio_voice_response.cpp
@@ -0,0 +1,191 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "radio_voice_utils.h"
+
+RadioVoiceResponse::RadioVoiceResponse(RadioServiceTest& parent) : parent_voice(parent) {}
+
+ndk::ScopedAStatus RadioVoiceResponse::acceptCallResponse(const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::acknowledgeRequest(int32_t /*serial*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::conferenceResponse(const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::dialResponse(const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::emergencyDialResponse(const RadioResponseInfo& info) {
+    rspInfo = info;
+    parent_voice.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::exitEmergencyCallbackModeResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::explicitCallTransferResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::getCallForwardStatusResponse(
+        const RadioResponseInfo& /*info*/,
+        const std::vector<CallForwardInfo>& /*callForwardInfos*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::getCallWaitingResponse(const RadioResponseInfo& /*info*/,
+                                                              bool /*enable*/,
+                                                              int32_t /*serviceClass*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::getClipResponse(const RadioResponseInfo& /*info*/,
+                                                       ClipStatus /*status*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::getClirResponse(const RadioResponseInfo& /*info*/,
+                                                       int32_t /*n*/, int32_t /*m*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::getCurrentCallsResponse(const RadioResponseInfo& info,
+                                                               const std::vector<Call>& calls) {
+    rspInfo = info;
+    currentCalls = calls;
+    parent_voice.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::getLastCallFailCauseResponse(
+        const RadioResponseInfo& /*info*/, const LastCallFailCauseInfo& /*failCauseInfo*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::getMuteResponse(const RadioResponseInfo& /*info*/,
+                                                       bool /*enable*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::getPreferredVoicePrivacyResponse(
+        const RadioResponseInfo& /*info*/, bool /*enable*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::getTtyModeResponse(const RadioResponseInfo& /*info*/,
+                                                          TtyMode /*mode*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::handleStkCallSetupRequestFromSimResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::hangupConnectionResponse(const RadioResponseInfo& info) {
+    rspInfo = info;
+    parent_voice.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::hangupForegroundResumeBackgroundResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::hangupWaitingOrBackgroundResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::isVoNrEnabledResponse(const RadioResponseInfo& /*info*/,
+                                                             bool /*enabled*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::rejectCallResponse(const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::sendBurstDtmfResponse(const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::sendCdmaFeatureCodeResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::sendDtmfResponse(const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::separateConnectionResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::setCallForwardResponse(const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::setCallWaitingResponse(const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::setClirResponse(const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::setMuteResponse(const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::setPreferredVoicePrivacyResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::setTtyModeResponse(const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::setVoNrEnabledResponse(const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::startDtmfResponse(const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::stopDtmfResponse(const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RadioVoiceResponse::switchWaitingOrHoldingAndActiveResponse(
+        const RadioResponseInfo& /*info*/) {
+    return ndk::ScopedAStatus::ok();
+}
diff --git a/radio/aidl/vts/radio_voice_test.cpp b/radio/aidl/vts/radio_voice_test.cpp
new file mode 100644
index 0000000..717f3f0
--- /dev/null
+++ b/radio/aidl/vts/radio_voice_test.cpp
@@ -0,0 +1,267 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <aidl/android/hardware/radio/config/IRadioConfig.h>
+#include <aidl/android/hardware/radio/voice/EmergencyServiceCategory.h>
+#include <android-base/logging.h>
+#include <android/binder_manager.h>
+
+#include "radio_voice_utils.h"
+
+#define ASSERT_OK(ret) ASSERT_TRUE(ret.isOk())
+
+void RadioVoiceTest::SetUp() {
+    std::string serviceName = GetParam();
+
+    if (!isServiceValidForDeviceConfiguration(serviceName)) {
+        ALOGI("Skipped the test due to device configuration.");
+        GTEST_SKIP();
+    }
+
+    radio_voice = IRadioVoice::fromBinder(
+            ndk::SpAIBinder(AServiceManager_waitForService(GetParam().c_str())));
+    ASSERT_NE(nullptr, radio_voice.get());
+
+    radioRsp_voice = ndk::SharedRefBase::make<RadioVoiceResponse>(*this);
+    ASSERT_NE(nullptr, radioRsp_voice.get());
+
+    count_ = 0;
+
+    radioInd_voice = ndk::SharedRefBase::make<RadioVoiceIndication>(*this);
+    ASSERT_NE(nullptr, radioInd_voice.get());
+
+    radio_voice->setResponseFunctions(radioRsp_voice, radioInd_voice);
+
+    // Assert IRadioSim exists and SIM is present before testing
+    radio_sim = sim::IRadioSim::fromBinder(ndk::SpAIBinder(
+            AServiceManager_waitForService("android.hardware.radio.sim.IRadioSim/slot1")));
+    ASSERT_NE(nullptr, radio_sim.get());
+    updateSimCardStatus();
+    EXPECT_EQ(CardStatus::STATE_PRESENT, cardStatus.cardState);
+
+    // Assert IRadioConfig exists before testing
+    radio_config = config::IRadioConfig::fromBinder(ndk::SpAIBinder(
+            AServiceManager_waitForService("android.hardware.radio.config.IRadioConfig/default")));
+    ASSERT_NE(nullptr, radio_config.get());
+
+    if (isDsDsEnabled() || isTsTsEnabled()) {
+        radio_network = IRadioNetwork::fromBinder(ndk::SpAIBinder(AServiceManager_waitForService(
+                "android.hardware.radio.network.IRadioNetwork/slot1")));
+        ASSERT_NE(nullptr, radio_network.get());
+        radioRsp_network = ndk::SharedRefBase::make<RadioNetworkResponse>(*this);
+        radioInd_network = ndk::SharedRefBase::make<RadioNetworkIndication>(*this);
+        radio_network->setResponseFunctions(radioRsp_network, radioInd_network);
+    }
+}
+
+ndk::ScopedAStatus RadioVoiceTest::clearPotentialEstablishedCalls() {
+    // Get the current call Id to hangup the established emergency call.
+    serial = GetRandomSerialNumber();
+    radio_voice->getCurrentCalls(serial);
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+
+    // Hang up to disconnect the established call channels.
+    for (const Call& call : radioRsp_voice->currentCalls) {
+        serial = GetRandomSerialNumber();
+        radio_voice->hangup(serial, call.index);
+        ALOGI("Hang up to disconnect the established call channel: %d", call.index);
+        EXPECT_EQ(std::cv_status::no_timeout, wait());
+        // Give some time for modem to disconnect the established call channel.
+        sleep(MODEM_EMERGENCY_CALL_DISCONNECT_TIME);
+    }
+
+    // Verify there are no more current calls.
+    serial = GetRandomSerialNumber();
+    radio_voice->getCurrentCalls(serial);
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(0, radioRsp_voice->currentCalls.size());
+    return ndk::ScopedAStatus::ok();
+}
+
+/*
+ * Test IRadioVoice.emergencyDial() for the response returned.
+ */
+TEST_P(RadioVoiceTest, emergencyDial) {
+    if (!deviceSupportsFeature(FEATURE_VOICE_CALL)) {
+        ALOGI("Skipping emergencyDial because voice call is not supported in device");
+        return;
+    } else if (!deviceSupportsFeature(FEATURE_TELEPHONY_GSM) &&
+               !deviceSupportsFeature(FEATURE_TELEPHONY_CDMA)) {
+        ALOGI("Skipping emergencyDial because gsm/cdma radio is not supported in device");
+        return;
+    } else {
+        ALOGI("Running emergencyDial because voice call is supported in device");
+    }
+
+    serial = GetRandomSerialNumber();
+
+    Dial dialInfo;
+    dialInfo.address = std::string("911");
+    int32_t categories = static_cast<int32_t>(EmergencyServiceCategory::UNSPECIFIED);
+    std::vector<std::string> urns = {""};
+    EmergencyCallRouting routing = EmergencyCallRouting::UNKNOWN;
+
+    ndk::ScopedAStatus res =
+            radio_voice->emergencyDial(serial, dialInfo, categories, urns, routing, true, true);
+    ASSERT_OK(res);
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_voice->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_voice->rspInfo.serial);
+
+    ALOGI("emergencyDial, rspInfo.error = %s\n", toString(radioRsp_voice->rspInfo.error).c_str());
+
+    RadioError rspEmergencyDial = radioRsp_voice->rspInfo.error;
+    // In DSDS or TSTS, we only check the result if the current slot is IN_SERVICE
+    // or Emergency_Only.
+    if (isDsDsEnabled() || isTsTsEnabled()) {
+        serial = GetRandomSerialNumber();
+        radio_network->getVoiceRegistrationState(serial);
+        EXPECT_EQ(std::cv_status::no_timeout, wait());
+        if (isVoiceEmergencyOnly(radioRsp_network->voiceRegResp.regState) ||
+            isVoiceInService(radioRsp_network->voiceRegResp.regState)) {
+            EXPECT_EQ(RadioError::NONE, rspEmergencyDial);
+        }
+    } else {
+        EXPECT_EQ(RadioError::NONE, rspEmergencyDial);
+    }
+
+    // Give some time for modem to establish the emergency call channel.
+    sleep(MODEM_EMERGENCY_CALL_ESTABLISH_TIME);
+
+    // Disconnect all the potential established calls to prevent them affecting other tests.
+    clearPotentialEstablishedCalls();
+}
+
+/*
+ * Test IRadioVoice.emergencyDial() with specified service and its response returned.
+ */
+TEST_P(RadioVoiceTest, emergencyDial_withServices) {
+    if (!deviceSupportsFeature(FEATURE_VOICE_CALL)) {
+        ALOGI("Skipping emergencyDial because voice call is not supported in device");
+        return;
+    } else if (!deviceSupportsFeature(FEATURE_TELEPHONY_GSM) &&
+               !deviceSupportsFeature(FEATURE_TELEPHONY_CDMA)) {
+        ALOGI("Skipping emergencyDial because gsm/cdma radio is not supported in device");
+        return;
+    } else {
+        ALOGI("Running emergencyDial because voice call is supported in device");
+    }
+
+    serial = GetRandomSerialNumber();
+
+    Dial dialInfo;
+    dialInfo.address = std::string("911");
+    int32_t categories = static_cast<int32_t>(EmergencyServiceCategory::AMBULANCE);
+    std::vector<std::string> urns = {"urn:service:sos.ambulance"};
+    EmergencyCallRouting routing = EmergencyCallRouting::UNKNOWN;
+
+    ndk::ScopedAStatus res =
+            radio_voice->emergencyDial(serial, dialInfo, categories, urns, routing, true, true);
+    ASSERT_OK(res);
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_voice->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_voice->rspInfo.serial);
+
+    ALOGI("emergencyDial_withServices, rspInfo.error = %s\n",
+          toString(radioRsp_voice->rspInfo.error).c_str());
+    RadioError rspEmergencyDial = radioRsp_voice->rspInfo.error;
+
+    // In DSDS or TSTS, we only check the result if the current slot is IN_SERVICE
+    // or Emergency_Only.
+    if (isDsDsEnabled() || isTsTsEnabled()) {
+        serial = GetRandomSerialNumber();
+        radio_network->getVoiceRegistrationState(serial);
+        EXPECT_EQ(std::cv_status::no_timeout, wait());
+        if (isVoiceEmergencyOnly(radioRsp_network->voiceRegResp.regState) ||
+            isVoiceInService(radioRsp_network->voiceRegResp.regState)) {
+            EXPECT_EQ(RadioError::NONE, rspEmergencyDial);
+        }
+    } else {
+        EXPECT_EQ(RadioError::NONE, rspEmergencyDial);
+    }
+    // Give some time for modem to establish the emergency call channel.
+    sleep(MODEM_EMERGENCY_CALL_ESTABLISH_TIME);
+
+    // Disconnect all the potential established calls to prevent them affecting other tests.
+    clearPotentialEstablishedCalls();
+}
+
+/*
+ * Test IRadioVoice.emergencyDial() with known emergency call routing and its response returned.
+ */
+TEST_P(RadioVoiceTest, emergencyDial_withEmergencyRouting) {
+    if (!deviceSupportsFeature(FEATURE_VOICE_CALL)) {
+        ALOGI("Skipping emergencyDial because voice call is not supported in device");
+        return;
+    } else if (!deviceSupportsFeature(FEATURE_TELEPHONY_GSM) &&
+               !deviceSupportsFeature(FEATURE_TELEPHONY_CDMA)) {
+        ALOGI("Skipping emergencyDial because gsm/cdma radio is not supported in device");
+        return;
+    } else {
+        ALOGI("Running emergencyDial because voice call is supported in device");
+    }
+
+    serial = GetRandomSerialNumber();
+
+    Dial dialInfo;
+    dialInfo.address = std::string("911");
+    int32_t categories = static_cast<int32_t>(EmergencyServiceCategory::UNSPECIFIED);
+    std::vector<std::string> urns = {""};
+    EmergencyCallRouting routing = EmergencyCallRouting::EMERGENCY;
+
+    ndk::ScopedAStatus res =
+            radio_voice->emergencyDial(serial, dialInfo, categories, urns, routing, true, true);
+    ASSERT_OK(res);
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_voice->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_voice->rspInfo.serial);
+
+    ALOGI("emergencyDial_withEmergencyRouting, rspInfo.error = %s\n",
+          toString(radioRsp_voice->rspInfo.error).c_str());
+    RadioError rspEmergencyDial = radioRsp_voice->rspInfo.error;
+
+    // In DSDS or TSTS, we only check the result if the current slot is IN_SERVICE
+    // or Emergency_Only.
+    if (isDsDsEnabled() || isTsTsEnabled()) {
+        serial = GetRandomSerialNumber();
+        radio_network->getVoiceRegistrationState(serial);
+        EXPECT_EQ(std::cv_status::no_timeout, wait());
+        if (isVoiceEmergencyOnly(radioRsp_network->voiceRegResp.regState) ||
+            isVoiceInService(radioRsp_network->voiceRegResp.regState)) {
+            EXPECT_EQ(RadioError::NONE, rspEmergencyDial);
+        }
+    } else {
+        EXPECT_EQ(RadioError::NONE, rspEmergencyDial);
+    }
+
+    // Give some time for modem to establish the emergency call channel.
+    sleep(MODEM_EMERGENCY_CALL_ESTABLISH_TIME);
+
+    // Disconnect all the potential established calls to prevent them affecting other tests.
+    clearPotentialEstablishedCalls();
+}
+
+/*
+ * Test IRadioVoice.getCurrentCalls() for the response returned.
+ */
+TEST_P(RadioVoiceTest, getCurrentCalls) {
+    serial = GetRandomSerialNumber();
+    radio_voice->getCurrentCalls(serial);
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_voice->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_voice->rspInfo.serial);
+    EXPECT_EQ(RadioError::NONE, radioRsp_voice->rspInfo.error);
+}
diff --git a/radio/aidl/vts/radio_voice_utils.h b/radio/aidl/vts/radio_voice_utils.h
new file mode 100644
index 0000000..d61bf1e
--- /dev/null
+++ b/radio/aidl/vts/radio_voice_utils.h
@@ -0,0 +1,196 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/radio/voice/BnRadioVoiceIndication.h>
+#include <aidl/android/hardware/radio/voice/BnRadioVoiceResponse.h>
+#include <aidl/android/hardware/radio/voice/IRadioVoice.h>
+
+#include "radio_aidl_hal_utils.h"
+#include "radio_network_utils.h"
+
+using namespace aidl::android::hardware::radio::voice;
+
+class RadioVoiceTest;
+
+/* Callback class for radio voice response */
+class RadioVoiceResponse : public BnRadioVoiceResponse {
+  protected:
+    RadioServiceTest& parent_voice;
+
+  public:
+    RadioVoiceResponse(RadioServiceTest& parent_voice);
+    virtual ~RadioVoiceResponse() = default;
+
+    RadioResponseInfo rspInfo;
+    std::vector<Call> currentCalls;
+
+    virtual ndk::ScopedAStatus acceptCallResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus acknowledgeRequest(int32_t serial) override;
+
+    virtual ndk::ScopedAStatus conferenceResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus dialResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus emergencyDialResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus exitEmergencyCallbackModeResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus explicitCallTransferResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus getCallForwardStatusResponse(
+            const RadioResponseInfo& info,
+            const std::vector<CallForwardInfo>& call_forwardInfos) override;
+
+    virtual ndk::ScopedAStatus getCallWaitingResponse(const RadioResponseInfo& info, bool enable,
+                                                      int32_t serviceClass) override;
+
+    virtual ndk::ScopedAStatus getClipResponse(const RadioResponseInfo& info,
+                                               ClipStatus status) override;
+
+    virtual ndk::ScopedAStatus getClirResponse(const RadioResponseInfo& info, int32_t n,
+                                               int32_t m) override;
+
+    virtual ndk::ScopedAStatus getCurrentCallsResponse(const RadioResponseInfo& info,
+                                                       const std::vector<Call>& calls) override;
+
+    virtual ndk::ScopedAStatus getLastCallFailCauseResponse(
+            const RadioResponseInfo& info, const LastCallFailCauseInfo& failCauseInfo) override;
+
+    virtual ndk::ScopedAStatus getMuteResponse(const RadioResponseInfo& info, bool enable) override;
+
+    virtual ndk::ScopedAStatus getPreferredVoicePrivacyResponse(const RadioResponseInfo& info,
+                                                                bool enable) override;
+
+    virtual ndk::ScopedAStatus getTtyModeResponse(const RadioResponseInfo& info,
+                                                  TtyMode mode) override;
+
+    virtual ndk::ScopedAStatus handleStkCallSetupRequestFromSimResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus hangupConnectionResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus hangupForegroundResumeBackgroundResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus hangupWaitingOrBackgroundResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus isVoNrEnabledResponse(const RadioResponseInfo& info,
+                                                     bool enable) override;
+
+    virtual ndk::ScopedAStatus rejectCallResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus sendBurstDtmfResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus sendCdmaFeatureCodeResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus sendDtmfResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus separateConnectionResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setCallForwardResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setCallWaitingResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setClirResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setMuteResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setPreferredVoicePrivacyResponse(
+            const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setTtyModeResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus setVoNrEnabledResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus startDtmfResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus stopDtmfResponse(const RadioResponseInfo& info) override;
+
+    virtual ndk::ScopedAStatus switchWaitingOrHoldingAndActiveResponse(
+            const RadioResponseInfo& info) override;
+};
+
+/* Callback class for radio voice indication */
+class RadioVoiceIndication : public BnRadioVoiceIndication {
+  protected:
+    RadioServiceTest& parent_voice;
+
+  public:
+    RadioVoiceIndication(RadioServiceTest& parent_voice);
+    virtual ~RadioVoiceIndication() = default;
+
+    virtual ndk::ScopedAStatus callRing(RadioIndicationType type, bool isGsm,
+                                        const CdmaSignalInfoRecord& record) override;
+
+    virtual ndk::ScopedAStatus callStateChanged(RadioIndicationType type) override;
+
+    virtual ndk::ScopedAStatus cdmaCallWaiting(RadioIndicationType type,
+                                               const CdmaCallWaiting& callWaitingRecord) override;
+
+    virtual ndk::ScopedAStatus cdmaInfoRec(
+            RadioIndicationType type, const std::vector<CdmaInformationRecord>& records) override;
+
+    virtual ndk::ScopedAStatus cdmaOtaProvisionStatus(RadioIndicationType type,
+                                                      CdmaOtaProvisionStatus status) override;
+
+    virtual ndk::ScopedAStatus currentEmergencyNumberList(
+            RadioIndicationType type,
+            const std::vector<EmergencyNumber>& emergencyNumberList) override;
+
+    virtual ndk::ScopedAStatus enterEmergencyCallbackMode(RadioIndicationType type) override;
+
+    virtual ndk::ScopedAStatus exitEmergencyCallbackMode(RadioIndicationType type) override;
+
+    virtual ndk::ScopedAStatus indicateRingbackTone(RadioIndicationType type, bool start) override;
+
+    virtual ndk::ScopedAStatus onSupplementaryServiceIndication(
+            RadioIndicationType type, const StkCcUnsolSsResult& ss) override;
+
+    virtual ndk::ScopedAStatus resendIncallMute(RadioIndicationType type) override;
+
+    virtual ndk::ScopedAStatus srvccStateNotify(RadioIndicationType type,
+                                                SrvccState state) override;
+
+    virtual ndk::ScopedAStatus stkCallControlAlphaNotify(RadioIndicationType type,
+                                                         const std::string& alpha) override;
+
+    virtual ndk::ScopedAStatus stkCallSetup(RadioIndicationType type, int64_t timeout) override;
+};
+
+// The main test class for Radio AIDL Voice.
+class RadioVoiceTest : public ::testing::TestWithParam<std::string>, public RadioServiceTest {
+  protected:
+    /* Clear Potential Established Calls */
+    virtual ndk::ScopedAStatus clearPotentialEstablishedCalls();
+    std::shared_ptr<network::IRadioNetwork> radio_network;
+    std::shared_ptr<RadioNetworkResponse> radioRsp_network;
+    std::shared_ptr<RadioNetworkIndication> radioInd_network;
+
+  public:
+    virtual void SetUp() override;
+
+    /* radio voice service handle */
+    std::shared_ptr<IRadioVoice> radio_voice;
+    /* radio voice response handle */
+    std::shared_ptr<RadioVoiceResponse> radioRsp_voice;
+    /* radio voice indication handle */
+    std::shared_ptr<RadioVoiceIndication> radioInd_voice;
+};
diff --git a/security/dice/aidl/Android.bp b/security/dice/aidl/Android.bp
index af9dd33..01bc91e 100644
--- a/security/dice/aidl/Android.bp
+++ b/security/dice/aidl/Android.bp
@@ -41,6 +41,10 @@
         },
         rust: {
             enabled: true,
+            apex_available: [
+                "//apex_available:platform",
+                "com.android.compos",
+            ],
         },
     },
     //     versions: ["1"],
diff --git a/security/dice/aidl/aidl_api/android.hardware.security.dice/current/android/hardware/security/dice/BccHandover.aidl b/security/dice/aidl/aidl_api/android.hardware.security.dice/current/android/hardware/security/dice/BccHandover.aidl
index ab50c36..8baca94 100644
--- a/security/dice/aidl/aidl_api/android.hardware.security.dice/current/android/hardware/security/dice/BccHandover.aidl
+++ b/security/dice/aidl/aidl_api/android.hardware.security.dice/current/android/hardware/security/dice/BccHandover.aidl
@@ -35,7 +35,7 @@
 /* @hide */
 @RustDerive(Clone=true, Eq=true, Hash=true, Ord=true, PartialEq=true, PartialOrd=true) @VintfStability
 parcelable BccHandover {
-  byte[] cdiAttest;
-  byte[] cdiSeal;
+  byte[32] cdiAttest;
+  byte[32] cdiSeal;
   android.hardware.security.dice.Bcc bcc;
 }
diff --git a/security/dice/aidl/aidl_api/android.hardware.security.dice/current/android/hardware/security/dice/InputValues.aidl b/security/dice/aidl/aidl_api/android.hardware.security.dice/current/android/hardware/security/dice/InputValues.aidl
index 79583fb..e43c429 100644
--- a/security/dice/aidl/aidl_api/android.hardware.security.dice/current/android/hardware/security/dice/InputValues.aidl
+++ b/security/dice/aidl/aidl_api/android.hardware.security.dice/current/android/hardware/security/dice/InputValues.aidl
@@ -35,10 +35,10 @@
 /* @hide */
 @RustDerive(Clone=true, Eq=true, Hash=true, Ord=true, PartialEq=true, PartialOrd=true) @VintfStability
 parcelable InputValues {
-  byte[] codeHash;
+  byte[64] codeHash;
   android.hardware.security.dice.Config config;
-  byte[] authorityHash;
+  byte[64] authorityHash;
   @nullable byte[] authorityDescriptor;
   android.hardware.security.dice.Mode mode = android.hardware.security.dice.Mode.NOT_INITIALIZED;
-  byte[] hidden;
+  byte[64] hidden;
 }
diff --git a/security/dice/aidl/android/hardware/security/dice/BccHandover.aidl b/security/dice/aidl/android/hardware/security/dice/BccHandover.aidl
index d522cef..6ca862c 100644
--- a/security/dice/aidl/android/hardware/security/dice/BccHandover.aidl
+++ b/security/dice/aidl/android/hardware/security/dice/BccHandover.aidl
@@ -27,13 +27,13 @@
 @RustDerive(Clone=true, Eq=true, PartialEq=true, Ord=true, PartialOrd=true, Hash=true)
 parcelable BccHandover {
     /**
-     * CDI_attest. Must a exactly 32 bytes of data.
+     * CDI_attest. Must be exactly 32 bytes of data.
      */
-    byte[] cdiAttest;
+    byte[32] cdiAttest;
     /**
-     * CDI_seal. Must a exactly 32 bytes of data.
+     * CDI_seal. Must be exactly 32 bytes of data.
      */
-    byte[] cdiSeal;
+    byte[32] cdiSeal;
     /**
      * CBOR encoded BCC.
      *
diff --git a/security/dice/aidl/android/hardware/security/dice/InputValues.aidl b/security/dice/aidl/android/hardware/security/dice/InputValues.aidl
index e44ef22..711d523 100644
--- a/security/dice/aidl/android/hardware/security/dice/InputValues.aidl
+++ b/security/dice/aidl/android/hardware/security/dice/InputValues.aidl
@@ -34,7 +34,7 @@
     /**
      * The target code hash. Must be exactly 64 bytes.
      */
-    byte[] codeHash;
+    byte[64] codeHash;
     /**
      * The configuration data.
      */
@@ -42,7 +42,7 @@
     /**
      * The authority hash. Must be exactly 64 bytes. Must be all zero if unused.
      */
-    byte[] authorityHash;
+    byte[64] authorityHash;
     /**
      * Optional free form authorityDescriptor.
      */
@@ -54,5 +54,5 @@
     /**
      * Optional hidden values. Must be exactly 64 bytes. Must be all zero if unused.
      */
-    byte[] hidden;
+    byte[64] hidden;
 }
diff --git a/security/keymint/aidl/android/hardware/security/keymint/IKeyMintOperation.aidl b/security/keymint/aidl/android/hardware/security/keymint/IKeyMintOperation.aidl
index ce83044..ca89555 100644
--- a/security/keymint/aidl/android/hardware/security/keymint/IKeyMintOperation.aidl
+++ b/security/keymint/aidl/android/hardware/security/keymint/IKeyMintOperation.aidl
@@ -227,7 +227,8 @@
      * o PaddingMode::RSA_PSS.  For PSS-padded signature operations, the PSS salt length must match
      *   the size of the PSS digest selected.  The digest specified with Tag::DIGEST in params
      *   on begin() must be used as the PSS digest algorithm, MGF1 must be used as the mask
-     *   generation function and SHA1 must be used as the MGF1 digest algorithm.
+     *   generation function and the digest specified with Tag:DIGEST in params on begin() must also
+     *   be used as the MGF1 digest algorithm.
      *
      * -- ECDSA keys --
      *
diff --git a/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp b/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp
index 3695f1e..374f2da 100644
--- a/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp
+++ b/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp
@@ -537,6 +537,9 @@
     Status result;
     if (!output) return ErrorCode::UNEXPECTED_NULL_POINTER;
 
+    EXPECT_NE(op_, nullptr);
+    if (!op_) return ErrorCode::UNEXPECTED_NULL_POINTER;
+
     std::vector<uint8_t> o_put;
     result = op_->update(vector<uint8_t>(input.begin(), input.end()), {}, {}, &o_put);
 
@@ -809,6 +812,7 @@
         if (padding == PaddingMode::RSA_PSS) {
             EXPECT_GT(EVP_PKEY_CTX_set_rsa_padding(pkey_ctx, RSA_PKCS1_PSS_PADDING), 0);
             EXPECT_GT(EVP_PKEY_CTX_set_rsa_pss_saltlen(pkey_ctx, EVP_MD_size(md)), 0);
+            EXPECT_GT(EVP_PKEY_CTX_set_rsa_mgf1_md(pkey_ctx, md), 0);
         }
 
         ASSERT_EQ(1, EVP_DigestVerifyUpdate(&digest_ctx,
diff --git a/security/keymint/aidl/vts/functional/KeyMintTest.cpp b/security/keymint/aidl/vts/functional/KeyMintTest.cpp
index dd3719b..340010f 100644
--- a/security/keymint/aidl/vts/functional/KeyMintTest.cpp
+++ b/security/keymint/aidl/vts/functional/KeyMintTest.cpp
@@ -4608,8 +4608,10 @@
     auto params = AuthorizationSetBuilder().BlockMode(BlockMode::ECB).Padding(PaddingMode::PKCS7);
 
     // Try various message lengths; all should work.
-    for (size_t i = 0; i < 32; ++i) {
-        string message(i, 'a');
+    for (size_t i = 0; i <= 48; i++) {
+        SCOPED_TRACE(testing::Message() << "i = " << i);
+        // Edge case: '\t' (0x09) is also a valid PKCS7 padding character.
+        string message(i, '\t');
         string ciphertext = EncryptMessage(message, params);
         EXPECT_EQ(i + 16 - (i % 16), ciphertext.size());
         string plaintext = DecryptMessage(ciphertext, params);
@@ -4633,7 +4635,7 @@
     auto params = AuthorizationSetBuilder().BlockMode(BlockMode::ECB).Padding(PaddingMode::PKCS7);
 
     // Try various message lengths; all should fail
-    for (size_t i = 0; i < 32; ++i) {
+    for (size_t i = 0; i <= 48; i++) {
         string message(i, 'a');
         EXPECT_EQ(ErrorCode::INCOMPATIBLE_PADDING_MODE, Begin(KeyPurpose::ENCRYPT, params));
     }
@@ -5818,8 +5820,8 @@
 
     ASSERT_GT(key_blob_.size(), 0U);
 
-    // Two-block message.
-    string message = "1234567890123456";
+    // Four-block message.
+    string message = "12345678901234561234567890123456";
     vector<uint8_t> iv1;
     string ciphertext1 = EncryptMessage(message, BlockMode::CBC, PaddingMode::NONE, &iv1);
     EXPECT_EQ(message.size(), ciphertext1.size());
@@ -5979,8 +5981,10 @@
                                                  .Padding(PaddingMode::PKCS7)));
 
     // Try various message lengths; all should work.
-    for (size_t i = 0; i < 32; ++i) {
-        string message(i, 'a');
+    for (size_t i = 0; i <= 32; i++) {
+        SCOPED_TRACE(testing::Message() << "i = " << i);
+        // Edge case: '\t' (0x09) is also a valid PKCS7 padding character, albeit not for 3DES.
+        string message(i, '\t');
         vector<uint8_t> iv;
         string ciphertext = EncryptMessage(message, BlockMode::CBC, PaddingMode::PKCS7, &iv);
         EXPECT_EQ(i + 8 - (i % 8), ciphertext.size());
@@ -6002,7 +6006,7 @@
                                                  .Padding(PaddingMode::NONE)));
 
     // Try various message lengths; all should fail.
-    for (size_t i = 0; i < 32; ++i) {
+    for (size_t i = 0; i <= 32; i++) {
         auto begin_params =
                 AuthorizationSetBuilder().BlockMode(BlockMode::CBC).Padding(PaddingMode::PKCS7);
         EXPECT_EQ(ErrorCode::INCOMPATIBLE_PADDING_MODE, Begin(KeyPurpose::ENCRYPT, begin_params));
@@ -6033,6 +6037,7 @@
                                 .Authorization(TAG_NONCE, iv);
 
     for (size_t i = 0; i < kMaxPaddingCorruptionRetries; ++i) {
+        SCOPED_TRACE(testing::Message() << "i = " << i);
         ++ciphertext[ciphertext.size() / 2];
         EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::DECRYPT, begin_params));
         string plaintext;
diff --git a/sensors/aidl/Android.bp b/sensors/aidl/Android.bp
new file mode 100644
index 0000000..92b7ad0
--- /dev/null
+++ b/sensors/aidl/Android.bp
@@ -0,0 +1,32 @@
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "hardware_interfaces_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["hardware_interfaces_license"],
+}
+
+aidl_interface {
+    name: "android.hardware.sensors",
+    vendor_available: true,
+    srcs: ["android/hardware/sensors/*.aidl"],
+    imports: [
+        "android.hardware.common-V2",
+        "android.hardware.common.fmq-V1",
+    ],
+    stability: "vintf",
+    backend: {
+        cpp: {
+            enabled: false,
+        },
+        java: {
+            enabled: false,
+        },
+        ndk: {
+            vndk: {
+                enabled: true,
+            },
+        },
+    },
+}
diff --git a/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/AdditionalInfo.aidl b/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/AdditionalInfo.aidl
new file mode 100644
index 0000000..5184723
--- /dev/null
+++ b/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/AdditionalInfo.aidl
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.sensors;
+@FixedSize @VintfStability
+parcelable AdditionalInfo {
+  android.hardware.sensors.AdditionalInfo.AdditionalInfoType type;
+  int serial;
+  android.hardware.sensors.AdditionalInfo.AdditionalInfoPayload payload;
+  @FixedSize @VintfStability
+  union AdditionalInfoPayload {
+    android.hardware.sensors.AdditionalInfo.AdditionalInfoPayload.Int32Values dataInt32;
+    android.hardware.sensors.AdditionalInfo.AdditionalInfoPayload.FloatValues dataFloat;
+    @FixedSize @VintfStability
+    parcelable Int32Values {
+      int[14] values;
+    }
+    @FixedSize @VintfStability
+    parcelable FloatValues {
+      float[14] values;
+    }
+  }
+  @Backing(type="int") @VintfStability
+  enum AdditionalInfoType {
+    AINFO_BEGIN = 0,
+    AINFO_END = 1,
+    AINFO_UNTRACKED_DELAY = 65536,
+    AINFO_INTERNAL_TEMPERATURE = 65537,
+    AINFO_VEC3_CALIBRATION = 65538,
+    AINFO_SENSOR_PLACEMENT = 65539,
+    AINFO_SAMPLING = 65540,
+    AINFO_CHANNEL_NOISE = 131072,
+    AINFO_CHANNEL_SAMPLER = 131073,
+    AINFO_CHANNEL_FILTER = 131074,
+    AINFO_CHANNEL_LINEAR_TRANSFORM = 131075,
+    AINFO_CHANNEL_NONLINEAR_MAP = 131076,
+    AINFO_CHANNEL_RESAMPLER = 131077,
+    AINFO_LOCAL_GEOMAGNETIC_FIELD = 196608,
+    AINFO_LOCAL_GRAVITY = 196609,
+    AINFO_DOCK_STATE = 196610,
+    AINFO_HIGH_PERFORMANCE_MODE = 196611,
+    AINFO_MAGNETIC_FIELD_CALIBRATION = 196612,
+    AINFO_CUSTOM_START = 268435456,
+    AINFO_DEBUGGING_START = 1073741824,
+  }
+}
diff --git a/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/DynamicSensorInfo.aidl b/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/DynamicSensorInfo.aidl
new file mode 100644
index 0000000..0c9a493
--- /dev/null
+++ b/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/DynamicSensorInfo.aidl
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.sensors;
+@FixedSize @VintfStability
+parcelable DynamicSensorInfo {
+  boolean connected;
+  int sensorHandle;
+  android.hardware.sensors.DynamicSensorInfo.Uuid uuid;
+  @FixedSize @VintfStability
+  parcelable Uuid {
+    byte[16] values;
+  }
+}
diff --git a/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/Event.aidl b/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/Event.aidl
new file mode 100644
index 0000000..c92ab1a
--- /dev/null
+++ b/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/Event.aidl
@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.sensors;
+@FixedSize @VintfStability
+parcelable Event {
+  long timestamp;
+  int sensorHandle;
+  android.hardware.sensors.SensorType sensorType;
+  android.hardware.sensors.Event.EventPayload payload;
+  @FixedSize @VintfStability
+  union EventPayload {
+    android.hardware.sensors.Event.EventPayload.Vec3 vec3;
+    android.hardware.sensors.Event.EventPayload.Vec4 vec4;
+    android.hardware.sensors.Event.EventPayload.Uncal uncal;
+    android.hardware.sensors.Event.EventPayload.MetaData meta;
+    float scalar;
+    long stepCount;
+    android.hardware.sensors.Event.EventPayload.HeartRate heartRate;
+    android.hardware.sensors.Event.EventPayload.Pose6Dof pose6DOF;
+    android.hardware.sensors.DynamicSensorInfo dynamic;
+    android.hardware.sensors.AdditionalInfo additional;
+    android.hardware.sensors.Event.EventPayload.Data data;
+    android.hardware.sensors.Event.EventPayload.HeadTracker headTracker;
+    @FixedSize @VintfStability
+    parcelable Vec4 {
+      float x;
+      float y;
+      float z;
+      float w;
+    }
+    @FixedSize @VintfStability
+    parcelable Vec3 {
+      float x;
+      float y;
+      float z;
+      android.hardware.sensors.SensorStatus status;
+    }
+    @FixedSize @VintfStability
+    parcelable Uncal {
+      float x;
+      float y;
+      float z;
+      float xBias;
+      float yBias;
+      float zBias;
+    }
+    @FixedSize @VintfStability
+    parcelable HeadTracker {
+      float rx;
+      float ry;
+      float rz;
+      float vx;
+      float vy;
+      float vz;
+      int discontinuityCount;
+    }
+    @FixedSize @VintfStability
+    parcelable HeartRate {
+      float bpm;
+      android.hardware.sensors.SensorStatus status;
+    }
+    @FixedSize @VintfStability
+    parcelable MetaData {
+      android.hardware.sensors.Event.EventPayload.MetaData.MetaDataEventType what;
+      @Backing(type="int") @VintfStability
+      enum MetaDataEventType {
+        META_DATA_FLUSH_COMPLETE = 1,
+      }
+    }
+    @FixedSize @VintfStability
+    parcelable Pose6Dof {
+      float[15] values;
+    }
+    @FixedSize @VintfStability
+    parcelable Data {
+      float[16] values;
+    }
+  }
+}
diff --git a/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/ISensors.aidl b/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/ISensors.aidl
new file mode 100644
index 0000000..f60f5bb
--- /dev/null
+++ b/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/ISensors.aidl
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.sensors;
+@VintfStability
+interface ISensors {
+  void activate(in int sensorHandle, in boolean enabled);
+  void batch(in int sensorHandle, in long samplingPeriodNs, in long maxReportLatencyNs);
+  int configDirectReport(in int sensorHandle, in int channelHandle, in android.hardware.sensors.ISensors.RateLevel rate);
+  void flush(in int sensorHandle);
+  android.hardware.sensors.SensorInfo[] getSensorsList();
+  void initialize(in android.hardware.common.fmq.MQDescriptor<android.hardware.sensors.Event,android.hardware.common.fmq.SynchronizedReadWrite> eventQueueDescriptor, in android.hardware.common.fmq.MQDescriptor<int,android.hardware.common.fmq.SynchronizedReadWrite> wakeLockDescriptor, in android.hardware.sensors.ISensorsCallback sensorsCallback);
+  void injectSensorData(in android.hardware.sensors.Event event);
+  int registerDirectChannel(in android.hardware.sensors.ISensors.SharedMemInfo mem);
+  void setOperationMode(in android.hardware.sensors.ISensors.OperationMode mode);
+  void unregisterDirectChannel(in int channelHandle);
+  const int ERROR_NO_MEMORY = -12;
+  const int ERROR_BAD_VALUE = -22;
+  const int WAKE_LOCK_TIMEOUT_SECONDS = 1;
+  const int EVENT_QUEUE_FLAG_BITS_READ_AND_PROCESS = 1;
+  const int EVENT_QUEUE_FLAG_BITS_EVENTS_READ = 2;
+  const int WAKE_LOCK_QUEUE_FLAG_BITS_DATA_WRITTEN = 1;
+  const int DIRECT_REPORT_SENSOR_EVENT_OFFSET_SIZE_FIELD = 0;
+  const int DIRECT_REPORT_SENSOR_EVENT_OFFSET_SIZE_REPORT_TOKEN = 4;
+  const int DIRECT_REPORT_SENSOR_EVENT_OFFSET_SIZE_SENSOR_TYPE = 8;
+  const int DIRECT_REPORT_SENSOR_EVENT_OFFSET_SIZE_ATOMIC_COUNTER = 12;
+  const int DIRECT_REPORT_SENSOR_EVENT_OFFSET_SIZE_TIMESTAMP = 16;
+  const int DIRECT_REPORT_SENSOR_EVENT_OFFSET_SIZE_DATA = 24;
+  const int DIRECT_REPORT_SENSOR_EVENT_OFFSET_SIZE_RESERVED = 88;
+  const int DIRECT_REPORT_SENSOR_EVENT_TOTAL_LENGTH = 104;
+  @Backing(type="int") @VintfStability
+  enum RateLevel {
+    STOP = 0,
+    NORMAL = 1,
+    FAST = 2,
+    VERY_FAST = 3,
+  }
+  @Backing(type="int") @VintfStability
+  enum OperationMode {
+    NORMAL = 0,
+    DATA_INJECTION = 1,
+  }
+  @VintfStability
+  parcelable SharedMemInfo {
+    android.hardware.sensors.ISensors.SharedMemInfo.SharedMemType type;
+    android.hardware.sensors.ISensors.SharedMemInfo.SharedMemFormat format;
+    int size;
+    android.hardware.common.NativeHandle memoryHandle;
+    @Backing(type="int") @VintfStability
+    enum SharedMemFormat {
+      SENSORS_EVENT = 1,
+    }
+    @Backing(type="int") @VintfStability
+    enum SharedMemType {
+      ASHMEM = 1,
+      GRALLOC = 2,
+    }
+  }
+}
diff --git a/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/ISensorsCallback.aidl b/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/ISensorsCallback.aidl
new file mode 100644
index 0000000..78ab567
--- /dev/null
+++ b/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/ISensorsCallback.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.sensors;
+@VintfStability
+interface ISensorsCallback {
+  void onDynamicSensorsConnected(in android.hardware.sensors.SensorInfo[] sensorInfos);
+  void onDynamicSensorsDisconnected(in int[] sensorHandles);
+}
diff --git a/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/SensorInfo.aidl b/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/SensorInfo.aidl
new file mode 100644
index 0000000..996be3d
--- /dev/null
+++ b/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/SensorInfo.aidl
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.sensors;
+@VintfStability
+parcelable SensorInfo {
+  int sensorHandle;
+  String name;
+  String vendor;
+  int version;
+  android.hardware.sensors.SensorType type;
+  String typeAsString;
+  float maxRange;
+  float resolution;
+  float power;
+  int minDelayUs;
+  int fifoReservedEventCount;
+  int fifoMaxEventCount;
+  String requiredPermission;
+  int maxDelayUs;
+  int flags;
+  const int SENSOR_FLAG_BITS_WAKE_UP = 1;
+  const int SENSOR_FLAG_BITS_CONTINUOUS_MODE = 0;
+  const int SENSOR_FLAG_BITS_ON_CHANGE_MODE = 2;
+  const int SENSOR_FLAG_BITS_ONE_SHOT_MODE = 4;
+  const int SENSOR_FLAG_BITS_SPECIAL_REPORTING_MODE = 6;
+  const int SENSOR_FLAG_BITS_DATA_INJECTION = 16;
+  const int SENSOR_FLAG_BITS_DYNAMIC_SENSOR = 32;
+  const int SENSOR_FLAG_BITS_ADDITIONAL_INFO = 64;
+  const int SENSOR_FLAG_BITS_DIRECT_CHANNEL_ASHMEM = 1024;
+  const int SENSOR_FLAG_BITS_DIRECT_CHANNEL_GRALLOC = 2048;
+  const int SENSOR_FLAG_BITS_MASK_REPORTING_MODE = 14;
+  const int SENSOR_FLAG_BITS_MASK_DIRECT_REPORT = 896;
+  const int SENSOR_FLAG_BITS_MASK_DIRECT_CHANNEL = 3072;
+  const int SENSOR_FLAG_SHIFT_REPORTING_MODE = 1;
+  const int SENSOR_FLAG_SHIFT_DATA_INJECTION = 4;
+  const int SENSOR_FLAG_SHIFT_DYNAMIC_SENSOR = 5;
+  const int SENSOR_FLAG_SHIFT_ADDITIONAL_INFO = 6;
+  const int SENSOR_FLAG_SHIFT_DIRECT_REPORT = 7;
+  const int SENSOR_FLAG_SHIFT_DIRECT_CHANNEL = 10;
+}
diff --git a/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/SensorStatus.aidl b/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/SensorStatus.aidl
new file mode 100644
index 0000000..4521710
--- /dev/null
+++ b/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/SensorStatus.aidl
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.sensors;
+@Backing(type="byte") @VintfStability
+enum SensorStatus {
+  NO_CONTACT = -1,
+  UNRELIABLE = 0,
+  ACCURACY_LOW = 1,
+  ACCURACY_MEDIUM = 2,
+  ACCURACY_HIGH = 3,
+}
diff --git a/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/SensorType.aidl b/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/SensorType.aidl
new file mode 100644
index 0000000..3d7ab45
--- /dev/null
+++ b/sensors/aidl/aidl_api/android.hardware.sensors/current/android/hardware/sensors/SensorType.aidl
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.sensors;
+@Backing(type="int") @VintfStability
+enum SensorType {
+  META_DATA = 0,
+  ACCELEROMETER = 1,
+  MAGNETIC_FIELD = 2,
+  ORIENTATION = 3,
+  GYROSCOPE = 4,
+  LIGHT = 5,
+  PRESSURE = 6,
+  PROXIMITY = 8,
+  GRAVITY = 9,
+  LINEAR_ACCELERATION = 10,
+  ROTATION_VECTOR = 11,
+  RELATIVE_HUMIDITY = 12,
+  AMBIENT_TEMPERATURE = 13,
+  MAGNETIC_FIELD_UNCALIBRATED = 14,
+  GAME_ROTATION_VECTOR = 15,
+  GYROSCOPE_UNCALIBRATED = 16,
+  SIGNIFICANT_MOTION = 17,
+  STEP_DETECTOR = 18,
+  STEP_COUNTER = 19,
+  GEOMAGNETIC_ROTATION_VECTOR = 20,
+  HEART_RATE = 21,
+  TILT_DETECTOR = 22,
+  WAKE_GESTURE = 23,
+  GLANCE_GESTURE = 24,
+  PICK_UP_GESTURE = 25,
+  WRIST_TILT_GESTURE = 26,
+  DEVICE_ORIENTATION = 27,
+  POSE_6DOF = 28,
+  STATIONARY_DETECT = 29,
+  MOTION_DETECT = 30,
+  HEART_BEAT = 31,
+  DYNAMIC_SENSOR_META = 32,
+  ADDITIONAL_INFO = 33,
+  LOW_LATENCY_OFFBODY_DETECT = 34,
+  ACCELEROMETER_UNCALIBRATED = 35,
+  HINGE_ANGLE = 36,
+  HEAD_TRACKER = 37,
+  DEVICE_PRIVATE_BASE = 65536,
+}
diff --git a/sensors/aidl/android/hardware/sensors/AdditionalInfo.aidl b/sensors/aidl/android/hardware/sensors/AdditionalInfo.aidl
new file mode 100644
index 0000000..9fe2d39
--- /dev/null
+++ b/sensors/aidl/android/hardware/sensors/AdditionalInfo.aidl
@@ -0,0 +1,234 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.sensors;
+
+@FixedSize
+@VintfStability
+parcelable AdditionalInfo {
+    /**
+     * type of payload data, see AdditionalInfoType
+     */
+    AdditionalInfoType type;
+
+    /**
+     * sequence number of this frame for this type
+     */
+    int serial;
+
+    AdditionalInfoPayload payload;
+
+    @FixedSize
+    @VintfStability
+    union AdditionalInfoPayload {
+        Int32Values dataInt32;
+        FloatValues dataFloat;
+
+        @FixedSize
+        @VintfStability
+        parcelable Int32Values {
+            int[14] values;
+        }
+
+        @FixedSize
+        @VintfStability
+        parcelable FloatValues {
+            float[14] values;
+        }
+    }
+
+    @VintfStability
+    @Backing(type="int")
+    enum AdditionalInfoType {
+        /**
+         * Marks the beginning of additional information frames
+         */
+        AINFO_BEGIN = 0,
+
+        /**
+         * Marks the end of additional information frames
+         */
+        AINFO_END = 1,
+
+        /**
+         * Estimation of the delay that is not tracked by sensor timestamps. This
+         * includes delay introduced by sensor front-end filtering, data transport,
+         * etc.
+         * float[2]: delay in seconds, standard deviation of estimated value
+         */
+        AINFO_UNTRACKED_DELAY = 0x10000,
+
+        /**
+         * float: Celsius temperature
+         */
+        AINFO_INTERNAL_TEMPERATURE,
+
+        /**
+         * First three rows of a homogeneous matrix, which represents calibration to
+         * a three-element vector raw sensor reading.
+         * float[12]: 3x4 matrix in row major order
+         */
+        AINFO_VEC3_CALIBRATION,
+
+        /**
+         * Provides the orientation and location of the sensor element in terms of
+         * the Android coordinate system. This data is given as a 3x4 matrix
+         * consisting of a 3x3 rotation matrix (R) concatenated with a 3x1 location
+         * vector (t). The rotation matrix provides the orientation of the Android
+         * device coordinate frame relative to the local coordinate frame of the
+         * sensor. Note that assuming the axes conventions of the sensor are the
+         * same as Android, this is the inverse of the matrix applied to raw
+         * samples read from the sensor to convert them into the Android
+         * representation. The location vector represents the translation from the
+         * origin of the Android sensor coordinate system to the geometric center
+         * of the sensor, specified in millimeters (mm).
+         *
+         * float[12]: 3x4 matrix in row major order [R; t]
+         *
+         * Example:
+         *     This raw buffer: {0, 1, 0, 0, -1, 0, 0, 10, 0, 0, 1, -2.5}
+         *     Corresponds to this 3x4 matrix:
+         *         0 1 0    0
+         *        -1 0 0   10
+         *         0 0 1 -2.5
+         *     The sensor is oriented such that:
+         *         - the device X axis corresponds to the sensor's local -Y axis
+         *         - the device Y axis corresponds to the sensor's local X axis
+         *         - the device Z axis and sensor's local Z axis are equivalent
+         *     In other words, if viewing the origin of the Android coordinate
+         *     system from the positive Z direction, the device coordinate frame is
+         *     to be rotated 90 degrees counter-clockwise about the Z axis to align
+         *     with the sensor's local coordinate frame. Equivalently, a vector in
+         *     the Android coordinate frame may be multiplied with R to rotate it
+         *     90 degrees clockwise (270 degrees counter-clockwise), yielding its
+         *     representation in the sensor's coordinate frame.
+         *     Relative to the origin of the Android coordinate system, the physical
+         *     center of the sensor is located 10mm in the positive Y direction, and
+         *     2.5mm in the negative Z direction.
+         */
+        AINFO_SENSOR_PLACEMENT,
+
+        /**
+         * float[2]: raw sample period in seconds,
+         *           standard deviation of sampling period
+         */
+        AINFO_SAMPLING,
+
+        /**
+         * int32_t: noise type
+         * float[n]: parameters
+         */
+        AINFO_CHANNEL_NOISE = 0x20000,
+
+        /**
+         * float[3]: sample period, standard deviation of sample period,
+         * quantization unit
+         */
+        AINFO_CHANNEL_SAMPLER,
+
+        /**
+         * Represents a filter:
+         *   \sum_j a_j y[n-j] == \sum_i b_i x[n-i]
+         *
+         * int32_t[3]: number of feedforward coeffients M,
+         *             number of feedback coefficients N (for FIR filter, N = 1).
+         *             bit mask that represents which element the filter is applied
+         *             to. (bit 0==1 means this filter applies to vector element 0).
+         * float[M+N]: filter coefficients (b0, b1, ..., b_{M-1}), then
+         *             (a0, a1, ..., a_{N-1}), a0 is always 1.
+         *
+         * Multiple frames may be needed for higher number of taps.
+         */
+        AINFO_CHANNEL_FILTER,
+
+        /**
+         * int32_t[2]: size in (row, column) ... 1st frame
+         * float[n]: matrix element values in row major order.
+         */
+        AINFO_CHANNEL_LINEAR_TRANSFORM,
+
+        /**
+         * int32_t[2]: extrapolate method, interpolate method
+         * float[n]: mapping key points in pairs, (in, out)...
+         *           (may be used to model saturation).
+         */
+        AINFO_CHANNEL_NONLINEAR_MAP,
+
+        /**
+         * int32_t: resample method (0-th order, 1st order...)
+         * float[1]: resample ratio (upsampling if < 1.0, downsampling if > 1.0).
+         */
+        AINFO_CHANNEL_RESAMPLER,
+
+        /**
+         * Operation environment parameters section
+         * Types in the following section is sent down (instead of reported from)
+         * device as additional information to aid sensor operation. Data is sent
+         * via injectSensorData() function to sensor handle -1 denoting all sensors
+         * in device.
+         *
+         *
+         * Local geomagnetic field information based on device geo location. This
+         * type is primarily for for magnetic field calibration and rotation vector
+         * sensor fusion.
+         * float[3]: strength (uT), declination and inclination angle (rad).
+         */
+        AINFO_LOCAL_GEOMAGNETIC_FIELD = 0x30000,
+
+        /**
+         * Local gravitational acceleration strength at device geo location.
+         * float: gravitational acceleration norm in m/s^2.
+         */
+        AINFO_LOCAL_GRAVITY,
+
+        /**
+         * Device dock state.
+         * int32_t: dock state following Android API Intent.EXTRA_DOCK_STATE
+         * definition, undefined value is ignored.
+         */
+        AINFO_DOCK_STATE,
+
+        /**
+         * High performance mode hint. Device is able to use up more power and take
+         * more resources to improve throughput and latency in high performance mode.
+         * One possible use case is virtual reality, when sensor latency need to be
+         * carefully controlled.
+         * int32_t: 1 or 0, denote if device is in/out of high performance mode,
+         *          other values is ignored.
+         */
+        AINFO_HIGH_PERFORMANCE_MODE,
+
+        /**
+         * Magnetic field calibration hint. Device is notified when manually
+         * triggered magnetic field calibration procedure is started or stopped. The
+         * calibration procedure is assumed timed out after 1 minute from start,
+         * even if an explicit stop is not received.
+         *
+         * int32_t: 1 for start, 0 for stop, other value is ignored.
+         */
+        AINFO_MAGNETIC_FIELD_CALIBRATION,
+
+        /**
+         * Custom information
+         */
+        AINFO_CUSTOM_START = 0x10000000,
+
+        /**
+         * Debugging
+         */
+        AINFO_DEBUGGING_START = 0x40000000,
+    }
+}
diff --git a/sensors/aidl/android/hardware/sensors/DynamicSensorInfo.aidl b/sensors/aidl/android/hardware/sensors/DynamicSensorInfo.aidl
new file mode 100644
index 0000000..4b14ed0
--- /dev/null
+++ b/sensors/aidl/android/hardware/sensors/DynamicSensorInfo.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.sensors;
+
+@VintfStability
+@FixedSize
+parcelable DynamicSensorInfo {
+    boolean connected;
+
+    int sensorHandle;
+
+    /**
+     * UUID of a dynamic sensor (using RFC 4122 byte order)
+     * For UUID 12345678-90AB-CDEF-1122-334455667788 the uuid field is
+     * initialized as:
+     *   {0x12, 0x34, 0x56, 0x78, 0x90, 0xAB, 0xCD, 0xEF, 0x11, ...}
+     */
+    Uuid uuid;
+
+    @FixedSize
+    @VintfStability
+    parcelable Uuid {
+        byte[16] values;
+    }
+}
diff --git a/sensors/aidl/android/hardware/sensors/Event.aidl b/sensors/aidl/android/hardware/sensors/Event.aidl
new file mode 100644
index 0000000..fd6a8cc
--- /dev/null
+++ b/sensors/aidl/android/hardware/sensors/Event.aidl
@@ -0,0 +1,243 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.sensors;
+
+import android.hardware.sensors.AdditionalInfo;
+import android.hardware.sensors.DynamicSensorInfo;
+import android.hardware.sensors.SensorStatus;
+import android.hardware.sensors.SensorType;
+
+@VintfStability
+@FixedSize
+parcelable Event {
+    /**
+     * Time measured in nanoseconds, in "elapsedRealtimeNano()'s" timebase.
+     */
+    long timestamp;
+
+    /**
+     * sensor identifier
+     */
+    int sensorHandle;
+
+    SensorType sensorType;
+
+    /**
+     * Union discriminated on sensorType
+     */
+    EventPayload payload;
+
+    /*
+     * acceleration values are in meter per second per second (m/s^2)
+     * magnetic vector values are in micro-Tesla (uT)
+     * orientation values are in degrees
+     * gyroscope values are in rad/s
+     * temperature is in degrees centigrade (Celsius)
+     * distance in centimeters
+     * light in SI lux units
+     * pressure in hectopascal (hPa)
+     * relative humidity in percent
+     */
+    @VintfStability
+    @FixedSize
+    union EventPayload {
+        /**
+         * SensorType::ACCELEROMETER, SensorType::MAGNETIC_FIELD,
+         * SensorType::ORIENTATION, SensorType::GYROSCOPE, SensorType::GRAVITY,
+         * SensorType::LINEAR_ACCELERATION
+         */
+        Vec3 vec3;
+
+        /**
+         * SensorType::GAME_ROTATION_VECTOR
+         */
+        Vec4 vec4;
+
+        /**
+         * SensorType::MAGNETIC_FIELD_UNCALIBRATED,
+         * SensorType::GYROSCOPE_UNCALIBRATED
+         * SensorType::ACCELEROMETER_UNCALIBRATED
+         */
+        Uncal uncal;
+
+        /**
+         * SensorType::META_DATA
+         */
+        MetaData meta;
+
+        /**
+         * SensorType::DEVICE_ORIENTATION, SensorType::LIGHT, SensorType::PRESSURE,
+         * SensorType::TEMPERATURE, SensorType::PROXIMITY,
+         * SensorType::RELATIVE_HUMIDITY, SensorType::AMBIENT_TEMPERATURE,
+         * SensorType::SIGNIFICANT_MOTION, SensorType::STEP_DETECTOR,
+         * SensorType::TILT_DETECTOR, SensorType::WAKE_GESTURE,
+         * SensorType::GLANCE_GESTURE, SensorType::PICK_UP_GESTURE,
+         * SensorType::WRIST_TILT_GESTURE, SensorType::STATIONARY_DETECT,
+         * SensorType::MOTION_DETECT, SensorType::HEART_BEAT,
+         * SensorType::LOW_LATENCY_OFFBODY_DETECT
+         */
+        float scalar;
+
+        /**
+         * SensorType::STEP_COUNTER
+         */
+        long stepCount;
+
+        /**
+         * SensorType::HEART_RATE
+         */
+        HeartRate heartRate;
+
+        /**
+         * SensorType::POSE_6DOF
+         */
+        Pose6Dof pose6DOF;
+
+        /**
+         * SensorType::DYNAMIC_SENSOR_META
+         */
+        DynamicSensorInfo dynamic;
+
+        /**
+         * SensorType::ADDITIONAL_INFO
+         */
+        AdditionalInfo additional;
+
+        /**
+         * The following sensors should use the data field:
+         * - Undefined/custom sensor type >= SensorType::DEVICE_PRIVATE_BASE
+         * - SensorType::ROTATION_VECTOR, SensorType::GEOMAGNETIC_ROTATION_VECTOR:
+         *   - These are Vec4 types with an additional float accuracy field,
+         *     where data[4] is the estimated heading accuracy in radians
+         *     (-1 if unavailable, and invalid if not in the range (0, 2 * pi]).
+         */
+        Data data;
+
+        /**
+         * SensorType::HEAD_TRACKER
+         */
+        HeadTracker headTracker;
+
+        @FixedSize
+        @VintfStability
+        parcelable Vec4 {
+            float x;
+            float y;
+            float z;
+            float w;
+        }
+
+        @FixedSize
+        @VintfStability
+        parcelable Vec3 {
+            float x;
+            float y;
+            float z;
+            SensorStatus status;
+        }
+
+        @FixedSize
+        @VintfStability
+        parcelable Uncal {
+            float x;
+            float y;
+            float z;
+            float xBias;
+            float yBias;
+            float zBias;
+        }
+
+        /**
+         * Payload of the HEAD_TRACKER sensor type. Note that the axis
+         * definition of this sensor type differs from the rest of Android. See
+         * SensorType::HEAD_TRACKER for more information.
+         */
+        @FixedSize
+        @VintfStability
+        parcelable HeadTracker {
+            /**
+             * An Euler vector (rotation vector, i.e. a vector whose direction
+             * indicates the axis of rotation and magnitude indicates the angle
+             * to rotate around that axis) representing the transform from
+             * the (arbitrary, possibly slowly drifting) reference frame to the
+             * head frame. Expressed in radians. Magnitude of the vector must be
+             * in the range [0, pi], while the value of individual axes are
+             * in the range [-pi, pi].
+             */
+            float rx;
+            float ry;
+            float rz;
+
+            /**
+             * An Euler vector (rotation vector) representing the angular
+             * velocity of the head (relative to itself), in radians per second.
+             * The direction of this vector indicates the axis of rotation, and
+             * the magnitude indicates the rate of rotation.
+             */
+            float vx;
+            float vy;
+            float vz;
+
+            /**
+             * This value increments (or wraps around to 0) each time the
+             * reference frame is suddenly and significantly changed, for
+             * example if an orientation filter algorithm used for determining
+             * the orientation has had its state reset.
+             */
+            int discontinuityCount;
+        }
+
+        @FixedSize
+        @VintfStability
+        parcelable HeartRate {
+            /**
+             * Heart rate in beats per minute.
+             * Set to 0 when status is SensorStatus::UNRELIABLE or
+             * SensorStatus::NO_CONTACT
+             */
+            float bpm;
+            /**
+             * Status of the heart rate sensor for this reading.
+             */
+            SensorStatus status;
+        }
+
+        @FixedSize
+        @VintfStability
+        parcelable MetaData {
+            MetaDataEventType what;
+
+            @VintfStability
+            @Backing(type="int")
+            enum MetaDataEventType {
+                META_DATA_FLUSH_COMPLETE = 1,
+            }
+        }
+
+        @FixedSize
+        @VintfStability
+        parcelable Pose6Dof {
+            float[15] values;
+        }
+
+        @FixedSize
+        @VintfStability
+        parcelable Data {
+            float[16] values;
+        }
+    }
+}
diff --git a/sensors/aidl/android/hardware/sensors/ISensors.aidl b/sensors/aidl/android/hardware/sensors/ISensors.aidl
new file mode 100644
index 0000000..2ac1884
--- /dev/null
+++ b/sensors/aidl/android/hardware/sensors/ISensors.aidl
@@ -0,0 +1,375 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.sensors;
+
+import android.hardware.common.NativeHandle;
+import android.hardware.common.fmq.MQDescriptor;
+import android.hardware.common.fmq.SynchronizedReadWrite;
+import android.hardware.sensors.Event;
+import android.hardware.sensors.ISensorsCallback;
+import android.hardware.sensors.SensorInfo;
+
+@VintfStability
+interface ISensors {
+    /**
+     * Activate/de-activate one sensor.
+     *
+     * After sensor de-activation, existing sensor events that have not
+     * been written to the event queue must be abandoned immediately so that
+     * subsequent activations do not get stale sensor events (events
+     * that are generated prior to the latter activation).
+     *
+     * @param sensorHandle is the handle of the sensor to change.
+     * @param enabled set to true to enable, or false to disable the sensor.
+     * @return Status::ok on success
+     *         EX_ILLEGAL_ARGUMENT if the sensorHandle is invalid.
+     */
+    void activate(in int sensorHandle, in boolean enabled);
+
+    /**
+     * Sets a sensor’s parameters, including sampling frequency and maximum
+     * report latency. This function can be called while the sensor is
+     * activated, in which case it must not cause any sensor measurements to
+     * be lost: transitioning from one sampling rate to the other cannot cause
+     * lost events, nor can transitioning from a high maximum report latency to
+     * a low maximum report latency.
+     *
+     * @param sensorHandle handle of sensor to be changed.
+     * @param samplingPeriodNs specifies sensor sample period in nanoseconds.
+     * @param maxReportLatencyNs allowed delay time before an event is sampled
+     *     to time of report.
+     * @return Status::ok on success
+     *         EX_ILLEGAL_ARGUMENT if any parameters are invalid.
+     */
+    void batch(in int sensorHandle, in long samplingPeriodNs, in long maxReportLatencyNs);
+
+    /**
+     * Configure direct sensor event report in direct channel.
+     *
+     * This function start, modify rate or stop direct report of a sensor in a
+     * certain direct channel.
+     *
+     * @param sensorHandle handle of sensor to be configured. When combined
+     *     with STOP rate, sensorHandle can be -1 to denote all active sensors
+     *     in the direct channel specified by channel Handle.
+     * @param channelHandle handle of direct channel to be configured.
+     * @param rate rate level, see RateLevel enum.
+     * @param out reportToken The report token, ignored if rate is STOP.
+     *     See SharedMemFormat.
+     * @return The direct report token to identify multiple sensors of the same type in a single
+     *         direct channel.
+     * @return Status::ok on success
+     *         EX_ILLEGAL_ARGUMENT if the parameter is invalid (e.g. unsupported rate level
+     *          for sensor, channelHandle does not exist, etc).
+     *         EX_UNSUPPORTED_OPERATION if this functionality is unsupported.
+     */
+    int configDirectReport(in int sensorHandle, in int channelHandle, in RateLevel rate);
+
+    /**
+     * Trigger a flush of internal FIFO.
+     *
+     * Flush adds a FLUSH_COMPLETE metadata event to the end of the "batch mode"
+     * FIFO for the specified sensor and flushes the FIFO.  If the FIFO is empty
+     * or if the sensor doesn't support batching (FIFO size zero), return
+     * SUCCESS and add a trivial FLUSH_COMPLETE event added to the event stream.
+     * This applies to all sensors other than one-shot sensors. If the sensor
+     * is a one-shot sensor, flush must return EX_ILLEGAL_ARGUMENT and not generate any
+     * flush complete metadata.  If the sensor is not active at the time flush()
+     * is called, flush() return EX_ILLEGAL_ARGUMENT.
+     *
+     * @param sensorHandle handle of sensor to be flushed.
+     * @return Status::ok on success
+     *         EX_ILLEGAL_ARGUMENT if the sensorHandle is invalid.
+     */
+    void flush(in int sensorHandle);
+
+    /**
+     * Enumerate all available (static) sensors.
+     *
+     * The SensorInfo for each sensor returned by getSensorsList must be stable
+     * from the initial call to getSensorsList after a device boot until the
+     * entire system restarts. The SensorInfo for each sensor must not change
+     * between subsequent calls to getSensorsList, even across restarts of the
+     * HAL and its dependencies (for example, the sensor handle for a given
+     * sensor must not change across HAL restarts).
+     */
+    SensorInfo[] getSensorsList();
+
+    /**
+     * Initialize the Sensors HAL's Fast Message Queues (FMQ) and callback.
+     *
+     * The Fast Message Queues (FMQ) that are used to send data between the
+     * framework and the HAL. The callback is used by the HAL to notify the
+     * framework of asynchronous events, such as a dynamic sensor connection.
+     *
+     * The Event FMQ is used to transport sensor events from the HAL to the
+     * framework. The Event FMQ is created using the eventQueueDescriptor.
+     * Data may only be written to the Event FMQ. Data must not be read from
+     * the Event FMQ since the framework is the only reader. Upon receiving
+     * sensor events, the HAL writes the sensor events to the Event FMQ.
+     *
+     * Once the HAL is finished writing sensor events to the Event FMQ, the HAL
+     * must notify the framework that sensor events are available to be read and
+     * processed. This is accomplished by either:
+     *     1) Calling the Event FMQ’s EventFlag::wake() function with
+     * EventQueueFlagBits::READ_AND_PROCESS
+     *     2) Setting the write notification in the Event FMQ’s writeBlocking()
+     *        function to EventQueueFlagBits::READ_AND_PROCESS.
+     *
+     * If the Event FMQ’s writeBlocking() function is used, the read
+     * notification must be set to EventQueueFlagBits::EVENTS_READ in order to
+     * be notified and unblocked when the framework has successfully read events
+     * from the Event FMQ.
+     *
+     * The Wake Lock FMQ is used by the framework to notify the HAL when it is
+     * safe to release its wake_lock. When the framework receives WAKE_UP events
+     * from the Event FMQ and the framework has acquired a wake_lock, the
+     * framework must write the number of WAKE_UP events processed to the Wake
+     * Lock FMQ. When the HAL reads the data from the Wake Lock FMQ, the HAL
+     * decrements its current count of unprocessed WAKE_UP events and releases
+     * its wake_lock if the current count of unprocessed WAKE_UP events is
+     * zero. It is important to note that the HAL must acquire the wake lock and
+     * update its internal state regarding the number of outstanding WAKE_UP
+     * events _before_ posting the event to the Wake Lock FMQ, in order to avoid
+     * a race condition that can lead to loss of wake lock synchronization with
+     * the framework.
+     *
+     * The framework must use the WAKE_LOCK_QUEUE_FLAG_BITS_DATA_WRITTEN value to
+     * notify the HAL that data has been written to the Wake Lock FMQ and must
+     * be read by HAL.
+     *
+     * The ISensorsCallback is used by the HAL to notify the framework of
+     * asynchronous events, such as a dynamic sensor connection.
+     *
+     * The name of any wake_lock acquired by the Sensors HAL for WAKE_UP events
+     * must begin with "SensorsHAL_WAKEUP".
+     *
+     * If WAKE_LOCK_TIMEOUT_SECONDS has elapsed since the most recent WAKE_UP
+     * event was written to the Event FMQ without receiving a message on the
+     * Wake Lock FMQ, then any held wake_lock for WAKE_UP events must be
+     * released.
+     *
+     * If either the Event FMQ or the Wake Lock FMQ is already initialized when
+     * initialize is invoked, then both existing FMQs must be discarded and the
+     * new descriptors must be used to create new FMQs within the HAL. The
+     * number of outstanding WAKE_UP events should also be reset to zero, and
+     * any outstanding wake_locks held as a result of WAKE_UP events should be
+     * released.
+     *
+     * All active sensor requests and direct channels must be closed and
+     * properly cleaned up when initialize is called in order to ensure that the
+     * HAL and framework's state is consistent (e.g. after a runtime restart).
+     *
+     * initialize must be thread safe and prevent concurrent calls
+     * to initialize from simultaneously modifying state.
+     *
+     * @param eventQueueDescriptor Fast Message Queue descriptor that is used to
+     *     create the Event FMQ which is where sensor events are written. The
+     *     descriptor is obtained from the framework's FMQ that is used to read
+     *     sensor events.
+     * @param wakeLockDescriptor Fast Message Queue descriptor that is used to
+     *     create the Wake Lock FMQ which is where wake_lock events are read
+     *     from. The descriptor is obtained from the framework's FMQ that is
+     *     used to write wake_lock events.
+     * @param sensorsCallback sensors callback that receives asynchronous data
+     *     from the Sensors HAL.
+     * @return Status::ok on success
+     *         EX_ILLEGAL_ARGUMENT if the descriptor is invalid (such as null).
+     */
+    void initialize(in MQDescriptor<Event, SynchronizedReadWrite> eventQueueDescriptor,
+            in MQDescriptor<int, SynchronizedReadWrite> wakeLockDescriptor,
+            in ISensorsCallback sensorsCallback);
+
+    /**
+     * Inject a single sensor event or push operation environment parameters to
+     * device.
+     *
+     * When device is in NORMAL mode, this function is called to push operation
+     * environment data to device. In this operation, Event is always of
+     * SensorType::AdditionalInfo type. See operation environment parameters
+     * section in AdditionalInfoType.
+     *
+     * When device is in DATA_INJECTION mode, this function is also used for
+     * injecting sensor events.
+     *
+     * Regardless of OperationMode, injected SensorType::ADDITIONAL_INFO
+     * type events should not be routed back to the sensor event queue.
+     *
+     * @see AdditionalInfoType
+     * @see OperationMode
+     * @param event sensor event to be injected
+     * @return Status::ok on success
+     *         EX_UNSUPPORTED_OPERATION if this functionality is unsupported.
+     *         EX_SECURITY if the operation is not allowed.
+     *         EX_SERVICE_SPECIFIC on error
+     *         - ERROR_BAD_VALUE if the sensor event cannot be injected.
+     */
+    void injectSensorData(in Event event);
+
+    /**
+     * Register direct report channel.
+     *
+     * Register a direct channel with supplied shared memory information. Upon
+     * return, the sensor hardware is responsible for resetting the memory
+     * content to initial value (depending on memory format settings).
+     *
+     * @param mem shared memory info data structure.
+     * @param out channelHandle The registered channel handle.
+     * @return The direct channel handle, which is positive if successfully registered, and -1
+     *         otherwise.
+     * @return Status::ok on success
+     *         EX_ILLEGAL_ARGUMENT if the shared memory information is not consistent.
+     *         EX_UNSUPPORTED_OPERATION if this functionality is unsupported.
+     *         EX_SERVICE_SPECIFIC on error
+     *         - ERROR_NO_MEMORY if shared memory cannot be used by sensor system.
+     */
+    int registerDirectChannel(in SharedMemInfo mem);
+
+    /**
+     * Place the module in a specific mode.
+     *
+     * @see OperationMode
+     * @param mode The operation mode.
+     * @return Status::ok on success
+     *         EX_UNSUPPORTED_OPERATION if requested mode is not supported.
+     *         EX_SECURITY if the operation is not allowed.
+     */
+    void setOperationMode(in OperationMode mode);
+
+    /**
+     * Unregister direct report channel.
+     *
+     * Unregister a direct channel previously registered using
+     * registerDirectChannel, and remove all active sensor report configured in
+     * still active sensor report configured in the direct channel.
+     *
+     * @param channelHandle handle of direct channel to be unregistered.
+     * @return Status::ok on success
+     *         EX_UNSUPPORTED_OPERATION if direct report is not supported.
+     */
+    void unregisterDirectChannel(in int channelHandle);
+
+    /**
+     * Direct report rate level definition. Except for SENSOR_DIRECT_RATE_STOP, each
+     * rate level covers the range (55%, 220%] * nominal report rate. For example,
+     * if config direct report specify a rate level SENSOR_DIRECT_RATE_FAST, it is
+     * legal for sensor hardware to report event at a rate greater than 110Hz, and
+     * less or equal to 440Hz. Note that rate has to remain steady without variation
+     * before new rate level is configured, i.e. if a sensor is configured to
+     * SENSOR_DIRECT_RATE_FAST and starts to report event at 256Hz, it cannot
+     * change rate to 128Hz after a few seconds of running even if 128Hz is also in
+     * the legal range of SENSOR_DIRECT_RATE_FAST. Thus, it is recommended to
+     * associate report rate with RateLvel statically for single sensor.
+     */
+    @VintfStability
+    @Backing(type="int")
+    enum RateLevel {
+        STOP,
+        NORMAL,
+        FAST,
+        VERY_FAST,
+    }
+
+    @VintfStability
+    @Backing(type="int")
+    enum OperationMode {
+        // Normal operation. Default state of the module.
+        NORMAL = 0,
+        // Loopback mode. Data is injected for the supported sensors by the sensor service in this
+        // mode.
+        DATA_INJECTION = 1,
+    }
+
+    @VintfStability
+    parcelable SharedMemInfo {
+        SharedMemType type;
+        SharedMemFormat format;
+        int size;
+        NativeHandle memoryHandle;
+
+        @VintfStability
+        @Backing(type="int")
+        enum SharedMemFormat {
+            SENSORS_EVENT = 1,
+        }
+
+        @VintfStability
+        @Backing(type="int")
+        enum SharedMemType {
+            ASHMEM = 1,
+            GRALLOC,
+        }
+    }
+
+    /**
+     * Error codes that are used as service specific errors with the AIDL return
+     * value EX_SERVICE_SPECIFIC.
+     */
+    const int ERROR_NO_MEMORY = -12;
+    const int ERROR_BAD_VALUE = -22;
+
+    /**
+     * The maximum number of seconds to wait for a message on the Wake Lock FMQ
+     * before automatically releasing any wake_lock held for a WAKE_UP event.
+     */
+    const int WAKE_LOCK_TIMEOUT_SECONDS = 1;
+
+    /**
+     * Used to notify the Event FMQ that events should be read and processed.
+     */
+    const int EVENT_QUEUE_FLAG_BITS_READ_AND_PROCESS = 1 << 0;
+
+    /**
+     * Used by the framework to signal to the HAL when events have been
+     * successfully read from the Event FMQ.
+     *
+     * If the MessageQueue::writeBlocking function is being used to write sensor
+     * events to the Event FMQ, then the readNotification parameter must be set
+     * to EVENTS_READ.
+     */
+    const int EVENT_QUEUE_FLAG_BITS_EVENTS_READ = 1 << 1;
+
+    /**
+     * Used to notify the HAL that the framework has written data to the Wake
+     * Lock FMQ.
+     */
+    const int WAKE_LOCK_QUEUE_FLAG_BITS_DATA_WRITTEN = 1 << 0;
+
+    /**
+     * Constants related to direct sensor events. The following table illustrates the
+     * data format.
+     *
+     * Offset   Type        Name
+     * -----------------------------------
+     * 0x0000   int32_t     Size (always DIRECT_REPORT_SENSOR_EVENT_TOTAL_LENGTH)
+     * 0x0004   int32_t     Sensor report token
+     * 0x0008   int32_t     Type (see SensorType.aidl)
+     * 0x000C   uint32_t    Atomic counter
+     * 0x0010   int64_t     Timestamp (see Event.aidl)
+     * 0x0018   float[16]/  Data
+     *          int64_t[8]
+     * 0x0058   int32_t[4]  Reserved (set to zero)
+     */
+    const int DIRECT_REPORT_SENSOR_EVENT_OFFSET_SIZE_FIELD = 0x0;
+    const int DIRECT_REPORT_SENSOR_EVENT_OFFSET_SIZE_REPORT_TOKEN = 0x4;
+    const int DIRECT_REPORT_SENSOR_EVENT_OFFSET_SIZE_SENSOR_TYPE = 0x8;
+    const int DIRECT_REPORT_SENSOR_EVENT_OFFSET_SIZE_ATOMIC_COUNTER = 0xC;
+    const int DIRECT_REPORT_SENSOR_EVENT_OFFSET_SIZE_TIMESTAMP = 0x10;
+    const int DIRECT_REPORT_SENSOR_EVENT_OFFSET_SIZE_DATA = 0x18;
+    const int DIRECT_REPORT_SENSOR_EVENT_OFFSET_SIZE_RESERVED = 0x58;
+    const int DIRECT_REPORT_SENSOR_EVENT_TOTAL_LENGTH = 104;
+}
diff --git a/sensors/aidl/android/hardware/sensors/ISensorsCallback.aidl b/sensors/aidl/android/hardware/sensors/ISensorsCallback.aidl
new file mode 100644
index 0000000..01bae52
--- /dev/null
+++ b/sensors/aidl/android/hardware/sensors/ISensorsCallback.aidl
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.sensors;
+
+import android.hardware.sensors.SensorInfo;
+
+@VintfStability
+interface ISensorsCallback {
+    /**
+     * Notify the framework that new dynamic sensors have been connected.
+     *
+     * If a dynamic sensor was previously connected and has not been
+     * disconnected, then that sensor must not be included in sensorInfos.
+     *
+     * @param sensorInfos vector of SensorInfo for each dynamic sensor that
+     *     was connected.
+     */
+    void onDynamicSensorsConnected(in SensorInfo[] sensorInfos);
+
+    /**
+     * Notify the framework that previously connected dynamic sensors have been
+     * disconnected.
+     *
+     * If a dynamic sensor was previously disconnected and has not been
+     * reconnected, then that sensor must not be included in sensorHandles.
+     *
+     * The HAL must ensure that all sensor events from departing dynamic
+     * sensors have been written to the Event FMQ before calling
+     * onDynamicSensorsDisconnected.
+     *
+     * @param sensorHandles vector of sensor handles for each dynamic sensors
+     *     that was disconnected.
+     */
+    void onDynamicSensorsDisconnected(in int[] sensorHandles);
+}
diff --git a/sensors/aidl/android/hardware/sensors/SensorInfo.aidl b/sensors/aidl/android/hardware/sensors/SensorInfo.aidl
new file mode 100644
index 0000000..35caf8b
--- /dev/null
+++ b/sensors/aidl/android/hardware/sensors/SensorInfo.aidl
@@ -0,0 +1,217 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.sensors;
+
+import android.hardware.sensors.SensorType;
+
+@VintfStability
+parcelable SensorInfo {
+    /**
+     * handle that identifies this sensors. This handle is used to reference
+     * this sensor throughout the HAL API.
+     */
+    int sensorHandle;
+
+    /**
+     * Name of this sensor.
+     * All sensors of the same "type" must have a different "name".
+     */
+    String name;
+
+    /**
+     * vendor of the hardware part
+     */
+    String vendor;
+
+    /**
+     * version of the hardware part + driver. The value of this field
+     * must increase when the driver is updated in a way that changes the
+     * output of this sensor. This is important for fused sensors when the
+     * fusion algorithm is updated.
+     */
+    int version;
+
+    /**
+     * this sensor's type.
+     */
+    SensorType type;
+
+    /**
+     * type of this sensor as a string.
+     *
+     * When defining an OEM specific sensor or sensor manufacturer specific
+     * sensor, use your reserve domain name as a prefix.
+     * e.g. com.google.glass.onheaddetector
+     *
+     * For sensors of known type defined in SensorType (value <
+     * SensorType::DEVICE_PRIVATE_BASE), this can be an empty string.
+     */
+    String typeAsString;
+
+    /**
+     * maximum range of this sensor's value in SI units
+     */
+    float maxRange;
+
+    /**
+     * smallest difference between two values reported by this sensor
+     */
+    float resolution;
+
+    /**
+     * rough estimate of this sensor's power consumption in mA
+     */
+    float power;
+
+    /**
+     * this value depends on the reporting mode:
+     *
+     *   continuous: minimum sample period allowed in microseconds
+     *   on-change : 0
+     *   one-shot  :-1
+     *   special   : 0, unless otherwise noted
+     */
+    int minDelayUs;
+
+    /**
+     * number of events reserved for this sensor in the batch mode FIFO.
+     * If there is a dedicated FIFO for this sensor, then this is the
+     * size of this FIFO. If the FIFO is shared with other sensors,
+     * this is the size reserved for that sensor and it can be zero.
+     */
+    int fifoReservedEventCount;
+
+    /**
+     * maximum number of events of this sensor that could be batched.
+     * This is especially relevant when the FIFO is shared between
+     * several sensors; this value is then set to the size of that FIFO.
+     */
+    int fifoMaxEventCount;
+
+    /**
+     * permission required to see this sensor, register to it and receive data.
+     * Set to "" if no permission is required. Some sensor types like the
+     * heart rate monitor have a mandatory require_permission.
+     * For sensors that always require a specific permission, like the heart
+     * rate monitor, the android framework might overwrite this string
+     * automatically.
+     */
+    String requiredPermission;
+
+    /**
+     * This value is defined only for continuous mode and on-change sensors.
+     * It is the delay between two sensor events corresponding to the lowest
+     * frequency that this sensor supports. When lower frequencies are requested
+     * through batch()/setDelay() the events will be generated at this frequency
+     * instead.
+     * It can be used by the framework or applications to estimate when the
+     * batch FIFO may be full.
+     *
+     * continuous, on-change: maximum sampling period allowed in microseconds.
+     * one-shot, special : 0
+     */
+    int maxDelayUs;
+
+    /**
+     * Bitmasks defined in SENSOR_FLAG_BITS_* below.
+     */
+    int flags;
+
+    /**
+     * Whether this sensor wakes up the AP from suspend mode when data is
+     * available.  Whenever sensor events are delivered from a wake_up sensor,
+     * the driver needs to hold a wake_lock till the events are read by the
+     * SensorService i.e. till ISensors::poll() is called the next time.
+     * Once poll is called again it means events have been read by the
+     * SensorService, the driver can safely release the wake_lock. SensorService
+     * will continue to hold a wake_lock till the app actually reads the events.
+     */
+    const int SENSOR_FLAG_BITS_WAKE_UP = 1;
+
+    /**
+     * Reporting modes for various sensors. Each sensor will have exactly one of
+     * these modes set.
+     * The least significant 2nd, 3rd and 4th bits are used to represent four
+     * possible reporting modes.
+     */
+    const int SENSOR_FLAG_BITS_CONTINUOUS_MODE = 0;
+    const int SENSOR_FLAG_BITS_ON_CHANGE_MODE = 2;
+    const int SENSOR_FLAG_BITS_ONE_SHOT_MODE = 4;
+    const int SENSOR_FLAG_BITS_SPECIAL_REPORTING_MODE = 6;
+
+    /**
+     * Set this flag if the sensor supports data_injection mode and allows data
+     * to be injected from the SensorService. When in data_injection ONLY
+     * sensors with this flag set are injected sensor data and only sensors with
+     * this flag set are activated. Eg: Accelerometer and Step Counter sensors
+     * can be set with this flag and SensorService will inject accelerometer
+     * data and read the corresponding step counts.
+     */
+    const int SENSOR_FLAG_BITS_DATA_INJECTION = 0x10;
+
+    /**
+     * Set this flag if the sensor is a dynamically connected sensor. See
+     * DynamicSensorInfo and DYNAMIC_SENSOR_META for details.
+     */
+    const int SENSOR_FLAG_BITS_DYNAMIC_SENSOR = 0x20;
+
+    /**
+     * Set this flag if sensor additional information is supported.
+     * See ADDITIONAL_INFO and AdditionalInfo for details.
+     */
+    const int SENSOR_FLAG_BITS_ADDITIONAL_INFO = 0x40;
+
+    /**
+     * Set this flag if sensor suppor direct channel backed by ashmem.
+     * See SharedMemType and registerDirectChannel for more details.
+     */
+    const int SENSOR_FLAG_BITS_DIRECT_CHANNEL_ASHMEM = 0x400;
+
+    /**
+     * Set this flag if sensor suppor direct channel backed by gralloc HAL memory.
+     * See SharedMemType and registerDirectChannel for more details.
+     */
+    const int SENSOR_FLAG_BITS_DIRECT_CHANNEL_GRALLOC = 0x800;
+
+    /**
+     * Flags mask for reporting mode of sensor.
+     */
+    const int SENSOR_FLAG_BITS_MASK_REPORTING_MODE = 0xE;
+
+    /**
+     * Flags mask for direct report maximum rate level support.
+     * See RateLevel.
+     */
+    const int SENSOR_FLAG_BITS_MASK_DIRECT_REPORT = 0x380;
+
+    /**
+     * Flags mask for all direct channel support bits.
+     * See SharedMemType.
+     */
+    const int SENSOR_FLAG_BITS_MASK_DIRECT_CHANNEL = 0xC00;
+
+    /**
+     * Defines the number of bits different pieces of information are shifted in the
+     * SENSOR_FLAG_BITS_* bitmask.
+     */
+    const int SENSOR_FLAG_SHIFT_REPORTING_MODE = 1;
+    const int SENSOR_FLAG_SHIFT_DATA_INJECTION = 4;
+    const int SENSOR_FLAG_SHIFT_DYNAMIC_SENSOR = 5;
+    const int SENSOR_FLAG_SHIFT_ADDITIONAL_INFO = 6;
+    const int SENSOR_FLAG_SHIFT_DIRECT_REPORT = 7;
+    const int SENSOR_FLAG_SHIFT_DIRECT_CHANNEL = 10;
+}
diff --git a/sensors/aidl/android/hardware/sensors/SensorStatus.aidl b/sensors/aidl/android/hardware/sensors/SensorStatus.aidl
new file mode 100644
index 0000000..0fd8697
--- /dev/null
+++ b/sensors/aidl/android/hardware/sensors/SensorStatus.aidl
@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.sensors;
+
+@VintfStability
+@Backing(type="byte")
+enum SensorStatus {
+    NO_CONTACT = -1,
+    UNRELIABLE = 0,
+    ACCURACY_LOW = 1,
+    ACCURACY_MEDIUM = 2,
+    ACCURACY_HIGH = 3,
+}
diff --git a/sensors/aidl/android/hardware/sensors/SensorType.aidl b/sensors/aidl/android/hardware/sensors/SensorType.aidl
new file mode 100644
index 0000000..01e6bee
--- /dev/null
+++ b/sensors/aidl/android/hardware/sensors/SensorType.aidl
@@ -0,0 +1,674 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.sensors;
+
+@VintfStability
+@Backing(type="int")
+enum SensorType {
+    /**
+     * META_DATA is a special event type used to populate the MetaData
+     * structure. It doesn't correspond to a physical sensor. Events of this
+     * type exist only inside the HAL, their primary purpose is to signal the
+     * completion of a flush request.
+     */
+    META_DATA = 0,
+
+    /**
+     * ACCELEROMETER
+     * reporting-mode: continuous
+     *
+     * All values are in SI units (m/s^2) and measure the acceleration of the
+     * device minus the acceleration due to gravity.
+     *
+     * Implement the non-wake-up version of this sensor and implement the
+     * wake-up version if the system possesses a wake up fifo.
+     */
+    ACCELEROMETER = 1,
+
+    /**
+     * MAGNETIC_FIELD
+     * reporting-mode: continuous
+     *
+     * All values are in micro-Tesla (uT) and measure the geomagnetic
+     * field in the X, Y and Z axis.
+     *
+     * Implement the non-wake-up version of this sensor and implement the
+     * wake-up version if the system possesses a wake up fifo.
+     */
+    MAGNETIC_FIELD = 2,
+
+    /**
+     * ORIENTATION
+     * reporting-mode: continuous
+     *
+     * All values are angles in degrees.
+     *
+     * Orientation sensors return sensor events for all 3 axes at a constant
+     * rate defined by setDelay().
+     *
+     * Implement the non-wake-up version of this sensor and implement the
+     * wake-up version if the system possesses a wake up fifo.
+     */
+    ORIENTATION = 3,
+
+    /**
+     * GYROSCOPE
+     * reporting-mode: continuous
+     *
+     * All values are in radians/second and measure the rate of rotation
+     * around the X, Y and Z axis.
+     *
+     * Implement the non-wake-up version of this sensor and implement the
+     * wake-up version if the system possesses a wake up fifo.
+     */
+    GYROSCOPE = 4,
+
+    /**
+     * LIGHT
+     * reporting-mode: on-change
+     *
+     * The light sensor value is returned in SI lux units.
+     *
+     * Both wake-up and non wake-up versions are useful.
+     */
+    LIGHT = 5,
+
+    /**
+     * PRESSURE
+     * reporting-mode: continuous
+     *
+     * The pressure sensor return the athmospheric pressure in hectopascal (hPa)
+     *
+     * Implement the non-wake-up version of this sensor and implement the
+     * wake-up version if the system possesses a wake up fifo.
+     */
+    PRESSURE = 6,
+
+    /**
+     * PROXIMITY
+     * reporting-mode: on-change
+     *
+     * The proximity sensor which turns the screen off and back on during calls
+     * is the wake-up proximity sensor. Implement wake-up proximity sensor
+     * before implementing a non wake-up proximity sensor. For the wake-up
+     * proximity sensor set the flag SENSOR_FLAG_WAKE_UP.
+     * The value corresponds to the distance to the nearest object in
+     * centimeters.
+     */
+    PROXIMITY = 8,
+
+    /**
+     * GRAVITY
+     * reporting-mode: continuous
+     *
+     * A gravity output indicates the direction of and magnitude of gravity in
+     * the devices's coordinates.
+     *
+     * Implement the non-wake-up version of this sensor and implement the
+     * wake-up version if the system possesses a wake up fifo.
+     */
+    GRAVITY = 9,
+
+    /**
+     * LINEAR_ACCELERATION
+     * reporting-mode: continuous
+     *
+     * Indicates the linear acceleration of the device in device coordinates,
+     * not including gravity.
+     *
+     * Implement the non-wake-up version of this sensor and implement the
+     * wake-up version if the system possesses a wake up fifo.
+     */
+    LINEAR_ACCELERATION = 10,
+
+    /**
+     * ROTATION_VECTOR
+     * reporting-mode: continuous
+     *
+     * The rotation vector symbolizes the orientation of the device relative to
+     * the East-North-Up coordinates frame.
+     *
+     * Note that despite the name, SensorType::ROTATION_VECTOR uses
+     * quaternion representation, rather than the rotation vector representation
+     * (aka Euler vector) seen in SensorType::HEAD_TRACKER.
+     *
+     * Implement the non-wake-up version of this sensor and implement the
+     * wake-up version if the system possesses a wake up fifo.
+     */
+    ROTATION_VECTOR = 11,
+
+    /**
+     * RELATIVE_HUMIDITY
+     * reporting-mode: on-change
+     *
+     * A relative humidity sensor measures relative ambient air humidity and
+     * returns a value in percent.
+     *
+     * Both wake-up and non wake-up versions are useful.
+     */
+    RELATIVE_HUMIDITY = 12,
+
+    /**
+     * AMBIENT_TEMPERATURE
+     * reporting-mode: on-change
+     *
+     * The ambient (room) temperature in degree Celsius.
+     *
+     * Both wake-up and non wake-up versions are useful.
+     */
+    AMBIENT_TEMPERATURE = 13,
+
+    /**
+     * MAGNETIC_FIELD_UNCALIBRATED
+     * reporting-mode: continuous
+     *
+     * Similar to MAGNETIC_FIELD, but the hard iron calibration is
+     * reported separately instead of being included in the measurement.
+     *
+     * Implement the non-wake-up version of this sensor and implement the
+     * wake-up version if the system possesses a wake up fifo.
+     */
+    MAGNETIC_FIELD_UNCALIBRATED = 14,
+
+    /**
+     * GAME_ROTATION_VECTOR
+     * reporting-mode: continuous
+     *
+     * Similar to ROTATION_VECTOR, but not using the geomagnetic
+     * field.
+     *
+     * Implement the non-wake-up version of this sensor and implement the
+     * wake-up version if the system possesses a wake up fifo.
+     */
+    GAME_ROTATION_VECTOR = 15,
+
+    /**
+     * GYROSCOPE_UNCALIBRATED
+     * reporting-mode: continuous
+     *
+     * All values are in radians/second and measure the rate of rotation
+     * around the X, Y and Z axis.
+     *
+     * Implement the non-wake-up version of this sensor and implement the
+     * wake-up version if the system possesses a wake up fifo.
+     */
+    GYROSCOPE_UNCALIBRATED = 16,
+
+    /**
+     * SIGNIFICANT_MOTION
+     * reporting-mode: one-shot
+     *
+     * A sensor of this type triggers an event each time significant motion
+     * is detected and automatically disables itself.
+     * For Significant Motion sensor to be useful, it must be defined as a
+     * wake-up sensor. (set SENSOR_FLAG_WAKE_UP). Implement the wake-up
+     * significant motion sensor. A non wake-up version is not useful.
+     * The only allowed value to return is 1.0.
+     */
+    SIGNIFICANT_MOTION = 17,
+
+    /**
+     * STEP_DETECTOR
+     * reporting-mode: special
+     *
+     * A sensor of this type triggers an event each time a step is taken
+     * by the user. The only allowed value to return is 1.0 and an event
+     * is generated for each step.
+     *
+     * Both wake-up and non wake-up versions are useful.
+     */
+    STEP_DETECTOR = 18,
+
+    /**
+     * STEP_COUNTER
+     * reporting-mode: on-change
+     *
+     * A sensor of this type returns the number of steps taken by the user since
+     * the last reboot while activated. The value is returned as a uint64_t and
+     * is reset to zero only on a system / android reboot.
+     *
+     * Implement the non-wake-up version of this sensor and implement the
+     * wake-up version if the system possesses a wake up fifo.
+     */
+    STEP_COUNTER = 19,
+
+    /**
+     * GEOMAGNETIC_ROTATION_VECTOR
+     * reporting-mode: continuous
+     *
+     *  Similar to ROTATION_VECTOR, but using a magnetometer instead
+     *  of using a gyroscope.
+     *
+     * Implement the non-wake-up version of this sensor and implement the
+     * wake-up version if the system possesses a wake up fifo.
+     */
+    GEOMAGNETIC_ROTATION_VECTOR = 20,
+
+    /**
+     * HEART_RATE
+     * reporting-mode: on-change
+     *
+     *  A sensor of this type returns the current heart rate.
+     *  The events contain the current heart rate in beats per minute (BPM) and
+     *  the status of the sensor during the measurement. See "HeartRate" below
+     *  for more details.
+     *
+     *  Because this sensor is on-change, events must be generated when and only
+     *  when heart_rate.bpm or heart_rate.status have changed since the last
+     *  event. In particular, upon the first activation, unless the device is
+     *  known to not be on the body, the status field of the first event must be
+     *  set to SensorStatus::UNRELIABLE. The event should be generated no faster
+     *  than every period_ns passed to setDelay() or to batch().
+     *  See the definition of the on-change reporting mode for more information.
+     *
+     *  SensorInfo.requiredPermission must be set to
+     *  SENSOR_PERMISSION_BODY_SENSORS.
+     *
+     *  Both wake-up and non wake-up versions are useful.
+     */
+    HEART_RATE = 21,
+
+    /**
+     * WAKE_UP_TILT_DETECTOR
+     * reporting-mode: special (setDelay has no impact)
+     *
+     * A sensor of this type generates an event each time a tilt event is
+     * detected. A tilt event must be generated if the direction of the
+     * 2-seconds window average gravity changed by at least 35 degrees since the
+     * activation or the last trigger of the sensor.
+     *
+     *  reference_estimated_gravity = average of accelerometer measurements over
+     *  the first 1 second after activation or the estimated gravity at the last
+     *  trigger.
+     *
+     *  current_estimated_gravity = average of accelerometer measurements over
+     *  the last 2 seconds.
+     *
+     *  trigger when
+     *     angle(reference_estimated_gravity, current_estimated_gravity)
+     *       > 35 degrees
+     *
+     * Large accelerations without a change in phone orientation must not
+     * trigger a tilt event.
+     * For example, a sharp turn or strong acceleration while driving a car
+     * must not trigger a tilt event, even though the angle of the average
+     * acceleration might vary by more than 35 degrees.
+     *
+     * Typically, this sensor is implemented with the help of only an
+     * accelerometer. Other sensors can be used as well if they do not increase
+     * the power consumption significantly. This is a low power sensor that
+     * must allow the AP to go into suspend mode. Do not emulate this sensor
+     * in the HAL.
+     * Like other wake up sensors, the driver is expected to a hold a wake_lock
+     * with a timeout of 200 ms while reporting this event. The only allowed
+     * return value is 1.0.
+     *
+     * Implement only the wake-up version of this sensor.
+     */
+    TILT_DETECTOR = 22,
+
+    /**
+     * WAKE_GESTURE
+     * reporting-mode: one-shot
+     *
+     * A sensor enabling waking up the device based on a device specific motion.
+     *
+     * When this sensor triggers, the device behaves as if the power button was
+     * pressed, turning the screen on. This behavior (turning on the screen when
+     * this sensor triggers) might be deactivated by the user in the device
+     * settings. Changes in settings do not impact the behavior of the sensor:
+     * only whether the framework turns the screen on when it triggers.
+     *
+     * The actual gesture to be detected is not specified, and can be chosen by
+     * the manufacturer of the device.
+     * This sensor must be low power, as it is likely to be activated 24/7.
+     * The only allowed value to return is 1.0.
+     *
+     * Implement only the wake-up version of this sensor.
+     */
+    WAKE_GESTURE = 23,
+
+    /**
+     * GLANCE_GESTURE
+     * reporting-mode: one-shot
+     *
+     * A sensor enabling briefly turning the screen on to enable the user to
+     * glance content on screen based on a specific motion.  The device must
+     * turn the screen off after a few moments.
+     *
+     * When this sensor triggers, the device turns the screen on momentarily
+     * to allow the user to glance notifications or other content while the
+     * device remains locked in a non-interactive state (dozing). This behavior
+     * (briefly turning on the screen when this sensor triggers) might be
+     * deactivated by the user in the device settings.
+     * Changes in settings do not impact the behavior of the sensor: only
+     * whether the framework briefly turns the screen on when it triggers.
+     *
+     * The actual gesture to be detected is not specified, and can be chosen by
+     * the manufacturer of the device.
+     * This sensor must be low power, as it is likely to be activated 24/7.
+     * The only allowed value to return is 1.0.
+     *
+     * Implement only the wake-up version of this sensor.
+     */
+    GLANCE_GESTURE = 24,
+
+    /**
+     * PICK_UP_GESTURE
+     * reporting-mode: one-shot
+     *
+     * A sensor of this type triggers when the device is picked up regardless of
+     * wherever is was before (desk, pocket, bag). The only allowed return value
+     * is 1.0. This sensor de-activates itself immediately after it triggers.
+     *
+     * Implement only the wake-up version of this sensor.
+     */
+    PICK_UP_GESTURE = 25,
+
+    /**
+     * WRIST_TILT_GESTURE
+     * trigger-mode: special
+     * wake-up sensor: yes
+     *
+     * A sensor of this type triggers an event each time a tilt of the
+     * wrist-worn device is detected.
+     *
+     * This sensor must be low power, as it is likely to be activated 24/7.
+     * The only allowed value to return is 1.0.
+     *
+     * Implement only the wake-up version of this sensor.
+     */
+    WRIST_TILT_GESTURE = 26,
+
+    /**
+     * DEVICE_ORIENTATION
+     * reporting-mode: on-change
+     *
+     * The current orientation of the device. The value is reported in
+     * the "scalar" element of the EventPayload in Event. The
+     * only values that can be reported are (please refer to Android Sensor
+     * Coordinate System to understand the X and Y axis direction with respect
+     * to default orientation):
+     *  - 0: device is in default orientation (Y axis is vertical and points up)
+     *  - 1: device is rotated 90 degrees counter-clockwise from default
+     *       orientation (X axis is vertical and points up)
+     *  - 2: device is rotated 180 degrees from default orientation (Y axis is
+     *       vertical and points down)
+     *  - 3: device is rotated 90 degrees clockwise from default orientation
+     *       (X axis is vertical and points down)
+     *
+     * Moving the device to an orientation where the Z axis is vertical (either
+     * up or down) must not cause a new event to be reported.
+     *
+     * To improve the user experience of this sensor, it is recommended to
+     * implement some physical (i.e., rotation angle) and temporal (i.e., delay)
+     * hysteresis. In other words, minor or transient rotations must not cause
+     * a new event to be reported.
+     *
+     * This is a low power sensor that intended to reduce interrupts of
+     * application processor and thus allow it to go sleep. Use hardware
+     * implementation based on low power consumption sensors, such as
+     * accelerometer. Device must not emulate this sensor in the HAL.
+     *
+     * Both wake-up and non wake-up versions are useful.
+     */
+    DEVICE_ORIENTATION = 27,
+
+    /**
+     * POSE_6DOF
+     * trigger-mode: continuous
+     *
+     * A sensor of this type returns the pose of the device.
+     * Pose of the device is defined as the orientation of the device from a
+     * Earth Centered Earth Fixed frame and the translation from an arbitrary
+     * point at subscription.
+     *
+     * This sensor can be high power. It can use any and all of the following
+     *           . Accelerometer
+     *           . Gyroscope
+     *           . Camera
+     *           . Depth Camera
+     *
+     */
+    POSE_6DOF = 28,
+
+    /**
+     * STATIONARY_DETECT
+     * trigger mode: one shot
+     *
+     * A sensor of this type returns an event if the device is still/stationary
+     * for a while. The period of time to monitor for stationarity must be
+     * greater than 5 seconds. The latency must be less than 10 seconds.
+     *
+     * Stationarity here refers to absolute stationarity. eg: device on desk.
+     *
+     * The only allowed value to return is 1.0.
+     */
+    STATIONARY_DETECT = 29,
+
+    /**
+     * MOTION_DETECT
+     * trigger mode: one shot
+     *
+     * A sensor of this type returns an event if the device is not still for
+     * for a while. The period of time to monitor for stationarity must be
+     * greater than 5 seconds. The latency must be less than 10 seconds.
+     *
+     * Motion here refers to any mechanism in which the device is causes to be
+     * moved in its inertial frame. eg: Pickin up the device and walking with it
+     * to a nearby room may trigger motion wherewas keeping the device on a
+     * table on a smooth train moving at constant velocity may not trigger
+     * motion.
+     *
+     * The only allowed value to return is 1.0.
+     */
+    MOTION_DETECT = 30,
+
+    /**
+     * HEART_BEAT
+     * trigger mode: continuous
+     *
+     * A sensor of this type returns an event everytime a hear beat peak is
+     * detected.
+     *
+     * Peak here ideally corresponds to the positive peak in the QRS complex of
+     * and ECG signal.
+     *
+     * The sensor is not expected to be optimized for latency. As a guide, a
+     * latency of up to 10 seconds is acceptable. However, the timestamp attached
+     * to the event must be accuratly correspond to the time the peak occurred.
+     *
+     * The sensor event contains a parameter for the confidence in the detection
+     * of the peak where 0.0 represent no information at all, and 1.0 represents
+     * certainty.
+     */
+    HEART_BEAT = 31,
+
+    /**
+     * DYNAMIC_SENSOR_META
+     * trigger-mode: special
+     * wake-up sensor: yes
+     *
+     * A sensor event of this type is received when a dynamic sensor is added to
+     * or removed from the system. At most one sensor of this type can be
+     * present in one sensor HAL implementation and presence of a sensor of this
+     * type in sensor HAL implementation indicates that this sensor HAL supports
+     * dynamic sensor feature. Operations, such as batch, activate and setDelay,
+     * to this special purpose sensor must be treated as no-op and return
+     * successful; flush() also has to generate flush complete event as if this
+     * is a sensor that does not support batching.
+     *
+     * A dynamic sensor connection indicates connection of a physical device or
+     * instantiation of a virtual sensor backed by algorithm; and a dynamic
+     * sensor disconnection indicates the opposite. A sensor event of
+     * DYNAMIC_SENSOR_META type should be delivered regardless of
+     * the activation status of the sensor in the event of dynamic sensor
+     * connection and disconnection. In the sensor event, besides the common
+     * data entries, "dynamic_sensor_meta", which includes fields for connection
+     * status, handle of the sensor involved, pointer to sensor_t structure and
+     * a uuid field, must be populated.
+     *
+     * At a dynamic sensor connection event, fields of sensor_t structure
+     * referenced by a pointer in dynamic_sensor_meta must be filled as if it
+     * was regular sensors. Sensor HAL is responsible for recovery of memory if
+     * the corresponding data is dynamicially allocated. However, the
+     * pointer must be valid until the first activate call to the sensor
+     * reported in this connection event. At a dynamic sensor disconnection,
+     * the sensor_t pointer must be NULL.
+     *
+     * The sensor handle assigned to dynamic sensors must never be the same as
+     * that of any regular static sensors, and must be unique until next boot.
+     * In another word, if a handle h is used for a dynamic sensor A, that same
+     * number cannot be used for the same dynamic sensor A or another dynamic
+     * sensor B even after disconnection of A until reboot.
+     *
+     * The UUID field will be used for identifying the sensor in addition to
+     * name, vendor and version and type. For physical sensors of the same
+     * model, all sensors will have the same values in sensor_t, but the UUID
+     * must be unique and persistent for each individual unit. An all zero
+     * UUID indicates it is not possible to differentiate individual sensor
+     * unit.
+     *
+     */
+    DYNAMIC_SENSOR_META = 32,
+
+    /**
+     * ADDITIONAL_INFO
+     * reporting-mode: N/A
+     *
+     * This sensor type is for delivering additional sensor information aside
+     * from sensor event data.
+     * Additional information may include sensor front-end group delay, internal
+     * calibration parameters, noise level metrics, device internal temperature,
+     * etc.
+     *
+     * This type will never bind to a sensor. In other words, no sensor in the
+     * sensor list can have the type SENSOR_TYPE_ADDITIONAL_INFO. If a
+     * sensor HAL supports sensor additional information feature, it reports
+     * sensor_event_t with "sensor" field set to handle of the reporting sensor
+     * and "type" field set to ADDITIONAL_INFO. Delivery of
+     * additional information events is triggered under two conditions: an
+     * enable activate() call or a flush() call to the corresponding sensor.
+     * Besides, time varying parameters can update infrequently without being
+     * triggered. Device is responsible to control update rate. The recommend
+     * update rate is less than 1/1000 of sensor event rate or less than once
+     * per minute in average.
+     *
+     * A single additional information report consists of multiple frames.
+     * Sequences of these frames are ordered using timestamps, which means the
+     * timestamps of sequential frames have to be at least 1 nanosecond apart
+     * from each other. Each frame is a sensor_event_t delivered through the HAL
+     * interface, with related data stored in the "additional_info" field, which
+     * is of type additional_info_event_t.
+     * The "type" field of additional_info_event_t denotes the nature of the
+     * payload data (see additional_info_type_t).
+     * The "serial" field is used to keep the sequence of payload data that
+     * spans multiple frames. The first frame of the entire report is always of
+     * type AINFO_BEGIN, and the last frame is always AINFO_END.
+     *
+     * If flush() was triggering the report, all additional information frames
+     * must be delivered after flush complete event.
+     */
+    ADDITIONAL_INFO = 33,
+
+    /**
+     * LOW_LATENCY_OFFBODY_DETECT
+     * trigger-mode: on-change
+     * wake-up sensor: yes
+     *
+     * A sensor of this type is defined for devices that are supposed to be worn
+     * by the user in the normal use case (such as a watch, wristband, etc) and
+     * is not yet defined for other device.
+     *
+     * A sensor of this type triggers an event each time the wearable device
+     * is removed from the body and each time it's put back onto the body.
+     * It must be low-latency and be able to detect the on-body to off-body
+     * transition within one second (event delivery time included),
+     * and 3-second latency to determine the off-body to on-body transition
+     * (event delivery time included).
+     *
+     * There are only two valid event values for the sensor to return :
+     *    0.0 for off-body
+     *    1.0 for on-body
+     *
+     */
+    LOW_LATENCY_OFFBODY_DETECT = 34,
+
+    /**
+     * ACCELEROMETER_UNCALIBRATED
+     * reporting-mode: continuous
+     *
+     * All values are in SI units (m/s^2) and measure the acceleration of the
+     * device minus the acceleration due to gravity.
+     *
+     * Implement the non-wake-up version of this sensor and implement the
+     * wake-up version if the system possesses a wake up fifo.
+     */
+    ACCELEROMETER_UNCALIBRATED = 35,
+
+    /**
+     * HINGE_ANGLE
+     * reporting-mode: on-change
+     * wake-up sensor: yes
+     *
+     * A sensor of this type measures the angle, in degrees, between two
+     * integral parts of the device. Movement of a hinge measured by this sensor
+     * type is expected to alter the ways in which the user may interact with
+     * the device, for example by unfolding or revealing a display.
+     *
+     * Sensor data is output using EventPayload.scalar.
+     *
+     * Implement wake-up proximity sensor before implementing a non wake-up
+     * proximity sensor.
+     */
+    HINGE_ANGLE = 36,
+
+    /**
+     * HEAD_TRACKER
+     * reporting-mode: continuous
+     *
+     * A sensor of this type measures the orientation of a user's head relative
+     * to an arbitrary reference frame, and the rate of rotation.
+     *
+     * Events produced by this sensor follow a special head-centric coordinate
+     * frame, where:
+     *   - The X axis crosses through the user's ears, with the positive X
+     *     direction extending out of the user's right ear
+     *   - The Y axis crosses from the back of the user's head through their
+     *     nose, with the positive direction extending out of the nose, and the
+     *     X/Y plane being nominally parallel to the ground when the user is
+     *     upright and looking straight ahead
+     *   - The Z axis crosses from the neck through the top of the user's head,
+     *     with the positive direction extending out from the top of the head
+     *
+     * When this sensor type is exposed as a dynamic sensor through a
+     * communications channel that uses HID, such as Bluetooth or USB, as part
+     * of a device with audio output capability (e.g. headphones), then the
+     * DynamicSensorInfo::uuid field shall be set to contents of the HID
+     * Persistent Unique ID to permit association between the sensor and audio
+     * device. Accordingly, the HID Persistent Unique ID (Sensors Page 0x20,
+     * Usage ID 0x302) must be populated as a UUID in binary representation,
+     * following RFC 4122 byte order.
+     */
+    HEAD_TRACKER = 37,
+
+    /**
+     * Base for device manufacturers private sensor types.
+     * These sensor types can't be exposed in the SDK.
+     */
+    DEVICE_PRIVATE_BASE = 0x10000,
+}
diff --git a/sensors/aidl/default/Android.bp b/sensors/aidl/default/Android.bp
new file mode 100644
index 0000000..49841a4
--- /dev/null
+++ b/sensors/aidl/default/Android.bp
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "hardware_interfaces_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["hardware_interfaces_license"],
+}
+
+cc_library_static {
+    name: "libsensorsexampleimpl",
+    vendor: true,
+    shared_libs: [
+        "libbase",
+        "libfmq",
+        "libpower",
+        "libbinder_ndk",
+        "android.hardware.sensors-V1-ndk",
+    ],
+    export_include_dirs: ["include"],
+    srcs: [
+        "Sensors.cpp",
+        "Sensor.cpp",
+    ],
+    visibility: [
+        ":__subpackages__",
+        "//hardware/interfaces/tests/extension/sensors:__subpackages__",
+    ],
+}
+
+cc_binary {
+    name: "android.hardware.sensors-service.example",
+    relative_install_path: "hw",
+    init_rc: ["sensors-default.rc"],
+    vintf_fragments: ["sensors-default.xml"],
+    vendor: true,
+    shared_libs: [
+        "libbase",
+        "libbinder_ndk",
+        "libfmq",
+        "libpower",
+        "libcutils",
+        "liblog",
+        "libutils",
+        "android.hardware.sensors-V1-ndk",
+    ],
+    static_libs: [
+        "libsensorsexampleimpl",
+    ],
+    srcs: ["main.cpp"],
+}
diff --git a/sensors/aidl/default/Sensor.cpp b/sensors/aidl/default/Sensor.cpp
new file mode 100644
index 0000000..50d8841
--- /dev/null
+++ b/sensors/aidl/default/Sensor.cpp
@@ -0,0 +1,434 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "sensors-impl/Sensor.h"
+
+#include "utils/SystemClock.h"
+
+#include <cmath>
+
+using ::ndk::ScopedAStatus;
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace sensors {
+
+static constexpr int32_t kDefaultMaxDelayUs = 10 * 1000 * 1000;
+
+Sensor::Sensor(ISensorsEventCallback* callback)
+    : mIsEnabled(false),
+      mSamplingPeriodNs(0),
+      mLastSampleTimeNs(0),
+      mCallback(callback),
+      mMode(OperationMode::NORMAL) {
+    mRunThread = std::thread(startThread, this);
+}
+
+Sensor::~Sensor() {
+    std::unique_lock<std::mutex> lock(mRunMutex);
+    mStopThread = true;
+    mIsEnabled = false;
+    mWaitCV.notify_all();
+    lock.release();
+    mRunThread.join();
+}
+
+const SensorInfo& Sensor::getSensorInfo() const {
+    return mSensorInfo;
+}
+
+void Sensor::batch(int64_t samplingPeriodNs) {
+    if (samplingPeriodNs < mSensorInfo.minDelayUs * 1000ll) {
+        samplingPeriodNs = mSensorInfo.minDelayUs * 1000ll;
+    } else if (samplingPeriodNs > mSensorInfo.maxDelayUs * 1000ll) {
+        samplingPeriodNs = mSensorInfo.maxDelayUs * 1000ll;
+    }
+
+    if (mSamplingPeriodNs != samplingPeriodNs) {
+        mSamplingPeriodNs = samplingPeriodNs;
+        // Wake up the 'run' thread to check if a new event should be generated now
+        mWaitCV.notify_all();
+    }
+}
+
+void Sensor::activate(bool enable) {
+    if (mIsEnabled != enable) {
+        std::unique_lock<std::mutex> lock(mRunMutex);
+        mIsEnabled = enable;
+        mWaitCV.notify_all();
+    }
+}
+
+ScopedAStatus Sensor::flush() {
+    // Only generate a flush complete event if the sensor is enabled and if the sensor is not a
+    // one-shot sensor.
+    if (!mIsEnabled ||
+        (mSensorInfo.flags & static_cast<uint32_t>(SensorInfo::SENSOR_FLAG_BITS_ONE_SHOT_MODE))) {
+        return ScopedAStatus::fromServiceSpecificError(
+                static_cast<int32_t>(BnSensors::ERROR_BAD_VALUE));
+    }
+
+    // Note: If a sensor supports batching, write all of the currently batched events for the sensor
+    // to the Event FMQ prior to writing the flush complete event.
+    Event ev;
+    ev.sensorHandle = mSensorInfo.sensorHandle;
+    ev.sensorType = SensorType::META_DATA;
+    EventPayload::MetaData meta = {
+            .what = MetaDataEventType::META_DATA_FLUSH_COMPLETE,
+    };
+    ev.payload.set<EventPayload::Tag::meta>(meta);
+    std::vector<Event> evs{ev};
+    mCallback->postEvents(evs, isWakeUpSensor());
+
+    return ScopedAStatus::ok();
+}
+
+void Sensor::startThread(Sensor* sensor) {
+    sensor->run();
+}
+
+void Sensor::run() {
+    std::unique_lock<std::mutex> runLock(mRunMutex);
+    constexpr int64_t kNanosecondsInSeconds = 1000 * 1000 * 1000;
+
+    while (!mStopThread) {
+        if (!mIsEnabled || mMode == OperationMode::DATA_INJECTION) {
+            mWaitCV.wait(runLock, [&] {
+                return ((mIsEnabled && mMode == OperationMode::NORMAL) || mStopThread);
+            });
+        } else {
+            timespec curTime;
+            clock_gettime(CLOCK_BOOTTIME, &curTime);
+            int64_t now = (curTime.tv_sec * kNanosecondsInSeconds) + curTime.tv_nsec;
+            int64_t nextSampleTime = mLastSampleTimeNs + mSamplingPeriodNs;
+
+            if (now >= nextSampleTime) {
+                mLastSampleTimeNs = now;
+                nextSampleTime = mLastSampleTimeNs + mSamplingPeriodNs;
+                mCallback->postEvents(readEvents(), isWakeUpSensor());
+            }
+
+            mWaitCV.wait_for(runLock, std::chrono::nanoseconds(nextSampleTime - now));
+        }
+    }
+}
+
+bool Sensor::isWakeUpSensor() {
+    return mSensorInfo.flags & static_cast<uint32_t>(SensorInfo::SENSOR_FLAG_BITS_WAKE_UP);
+}
+
+std::vector<Event> Sensor::readEvents() {
+    std::vector<Event> events;
+    Event event;
+    event.sensorHandle = mSensorInfo.sensorHandle;
+    event.sensorType = mSensorInfo.type;
+    event.timestamp = ::android::elapsedRealtimeNano();
+    memset(&event.payload, 0, sizeof(event.payload));
+    readEventPayload(event.payload);
+    events.push_back(event);
+    return events;
+}
+
+void Sensor::setOperationMode(OperationMode mode) {
+    if (mMode != mode) {
+        std::unique_lock<std::mutex> lock(mRunMutex);
+        mMode = mode;
+        mWaitCV.notify_all();
+    }
+}
+
+bool Sensor::supportsDataInjection() const {
+    return mSensorInfo.flags & static_cast<uint32_t>(SensorInfo::SENSOR_FLAG_BITS_DATA_INJECTION);
+}
+
+ScopedAStatus Sensor::injectEvent(const Event& event) {
+    if (event.sensorType == SensorType::ADDITIONAL_INFO) {
+        return ScopedAStatus::ok();
+        // When in OperationMode::NORMAL, SensorType::ADDITIONAL_INFO is used to push operation
+        // environment data into the device.
+    }
+
+    if (!supportsDataInjection()) {
+        return ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+    }
+
+    if (mMode == OperationMode::DATA_INJECTION) {
+        mCallback->postEvents(std::vector<Event>{event}, isWakeUpSensor());
+        return ScopedAStatus::ok();
+    }
+
+    return ScopedAStatus::fromServiceSpecificError(
+            static_cast<int32_t>(BnSensors::ERROR_BAD_VALUE));
+}
+
+OnChangeSensor::OnChangeSensor(ISensorsEventCallback* callback)
+    : Sensor(callback), mPreviousEventSet(false) {}
+
+void OnChangeSensor::activate(bool enable) {
+    Sensor::activate(enable);
+    if (!enable) {
+        mPreviousEventSet = false;
+    }
+}
+
+std::vector<Event> OnChangeSensor::readEvents() {
+    std::vector<Event> events = Sensor::readEvents();
+    std::vector<Event> outputEvents;
+
+    for (auto iter = events.begin(); iter != events.end(); ++iter) {
+        Event ev = *iter;
+        if (!mPreviousEventSet ||
+            memcmp(&mPreviousEvent.payload, &ev.payload, sizeof(ev.payload)) != 0) {
+            outputEvents.push_back(ev);
+            mPreviousEvent = ev;
+            mPreviousEventSet = true;
+        }
+    }
+    return outputEvents;
+}
+
+AccelSensor::AccelSensor(int32_t sensorHandle, ISensorsEventCallback* callback) : Sensor(callback) {
+    mSensorInfo.sensorHandle = sensorHandle;
+    mSensorInfo.name = "Accel Sensor";
+    mSensorInfo.vendor = "Vendor String";
+    mSensorInfo.version = 1;
+    mSensorInfo.type = SensorType::ACCELEROMETER;
+    mSensorInfo.typeAsString = "";
+    mSensorInfo.maxRange = 78.4f;  // +/- 8g
+    mSensorInfo.resolution = 1.52e-5;
+    mSensorInfo.power = 0.001f;          // mA
+    mSensorInfo.minDelayUs = 10 * 1000;  // microseconds
+    mSensorInfo.maxDelayUs = kDefaultMaxDelayUs;
+    mSensorInfo.fifoReservedEventCount = 0;
+    mSensorInfo.fifoMaxEventCount = 0;
+    mSensorInfo.requiredPermission = "";
+    mSensorInfo.flags = static_cast<uint32_t>(SensorInfo::SENSOR_FLAG_BITS_DATA_INJECTION);
+};
+
+void AccelSensor::readEventPayload(EventPayload& payload) {
+    EventPayload::Vec3 vec3 = {
+            .x = 0,
+            .y = 0,
+            .z = -9.8,
+            .status = SensorStatus::ACCURACY_HIGH,
+    };
+    payload.set<EventPayload::Tag::vec3>(vec3);
+}
+
+PressureSensor::PressureSensor(int32_t sensorHandle, ISensorsEventCallback* callback)
+    : Sensor(callback) {
+    mSensorInfo.sensorHandle = sensorHandle;
+    mSensorInfo.name = "Pressure Sensor";
+    mSensorInfo.vendor = "Vendor String";
+    mSensorInfo.version = 1;
+    mSensorInfo.type = SensorType::PRESSURE;
+    mSensorInfo.typeAsString = "";
+    mSensorInfo.maxRange = 1100.0f;       // hPa
+    mSensorInfo.resolution = 0.005f;      // hPa
+    mSensorInfo.power = 0.001f;           // mA
+    mSensorInfo.minDelayUs = 100 * 1000;  // microseconds
+    mSensorInfo.maxDelayUs = kDefaultMaxDelayUs;
+    mSensorInfo.fifoReservedEventCount = 0;
+    mSensorInfo.fifoMaxEventCount = 0;
+    mSensorInfo.requiredPermission = "";
+    mSensorInfo.flags = 0;
+};
+
+void PressureSensor::readEventPayload(EventPayload& payload) {
+    payload.set<EventPayload::Tag::scalar>(1013.25f);
+}
+
+MagnetometerSensor::MagnetometerSensor(int32_t sensorHandle, ISensorsEventCallback* callback)
+    : Sensor(callback) {
+    mSensorInfo.sensorHandle = sensorHandle;
+    mSensorInfo.name = "Magnetic Field Sensor";
+    mSensorInfo.vendor = "Vendor String";
+    mSensorInfo.version = 1;
+    mSensorInfo.type = SensorType::MAGNETIC_FIELD;
+    mSensorInfo.typeAsString = "";
+    mSensorInfo.maxRange = 1300.0f;
+    mSensorInfo.resolution = 0.01f;
+    mSensorInfo.power = 0.001f;          // mA
+    mSensorInfo.minDelayUs = 20 * 1000;  // microseconds
+    mSensorInfo.maxDelayUs = kDefaultMaxDelayUs;
+    mSensorInfo.fifoReservedEventCount = 0;
+    mSensorInfo.fifoMaxEventCount = 0;
+    mSensorInfo.requiredPermission = "";
+    mSensorInfo.flags = 0;
+};
+
+void MagnetometerSensor::readEventPayload(EventPayload& payload) {
+    EventPayload::Vec3 vec3 = {
+            .x = 100.0,
+            .y = 0,
+            .z = 50.0,
+            .status = SensorStatus::ACCURACY_HIGH,
+    };
+    payload.set<EventPayload::Tag::vec3>(vec3);
+}
+
+LightSensor::LightSensor(int32_t sensorHandle, ISensorsEventCallback* callback)
+    : OnChangeSensor(callback) {
+    mSensorInfo.sensorHandle = sensorHandle;
+    mSensorInfo.name = "Light Sensor";
+    mSensorInfo.vendor = "Vendor String";
+    mSensorInfo.version = 1;
+    mSensorInfo.type = SensorType::LIGHT;
+    mSensorInfo.typeAsString = "";
+    mSensorInfo.maxRange = 43000.0f;
+    mSensorInfo.resolution = 10.0f;
+    mSensorInfo.power = 0.001f;           // mA
+    mSensorInfo.minDelayUs = 200 * 1000;  // microseconds
+    mSensorInfo.maxDelayUs = kDefaultMaxDelayUs;
+    mSensorInfo.fifoReservedEventCount = 0;
+    mSensorInfo.fifoMaxEventCount = 0;
+    mSensorInfo.requiredPermission = "";
+    mSensorInfo.flags = static_cast<uint32_t>(SensorInfo::SENSOR_FLAG_BITS_ON_CHANGE_MODE);
+};
+
+void LightSensor::readEventPayload(EventPayload& payload) {
+    payload.set<EventPayload::Tag::scalar>(80.0f);
+}
+
+ProximitySensor::ProximitySensor(int32_t sensorHandle, ISensorsEventCallback* callback)
+    : OnChangeSensor(callback) {
+    mSensorInfo.sensorHandle = sensorHandle;
+    mSensorInfo.name = "Proximity Sensor";
+    mSensorInfo.vendor = "Vendor String";
+    mSensorInfo.version = 1;
+    mSensorInfo.type = SensorType::PROXIMITY;
+    mSensorInfo.typeAsString = "";
+    mSensorInfo.maxRange = 5.0f;
+    mSensorInfo.resolution = 1.0f;
+    mSensorInfo.power = 0.012f;           // mA
+    mSensorInfo.minDelayUs = 200 * 1000;  // microseconds
+    mSensorInfo.maxDelayUs = kDefaultMaxDelayUs;
+    mSensorInfo.fifoReservedEventCount = 0;
+    mSensorInfo.fifoMaxEventCount = 0;
+    mSensorInfo.requiredPermission = "";
+    mSensorInfo.flags = static_cast<uint32_t>(SensorInfo::SENSOR_FLAG_BITS_ON_CHANGE_MODE |
+                                              SensorInfo::SENSOR_FLAG_BITS_WAKE_UP);
+};
+
+void ProximitySensor::readEventPayload(EventPayload& payload) {
+    payload.set<EventPayload::Tag::scalar>(2.5f);
+}
+
+GyroSensor::GyroSensor(int32_t sensorHandle, ISensorsEventCallback* callback) : Sensor(callback) {
+    mSensorInfo.sensorHandle = sensorHandle;
+    mSensorInfo.name = "Gyro Sensor";
+    mSensorInfo.vendor = "Vendor String";
+    mSensorInfo.version = 1;
+    mSensorInfo.type = SensorType::GYROSCOPE;
+    mSensorInfo.typeAsString = "";
+    mSensorInfo.maxRange = 1000.0f * M_PI / 180.0f;
+    mSensorInfo.resolution = 1000.0f * M_PI / (180.0f * 32768.0f);
+    mSensorInfo.power = 0.001f;
+    mSensorInfo.minDelayUs = 10 * 1000;  // microseconds
+    mSensorInfo.maxDelayUs = kDefaultMaxDelayUs;
+    mSensorInfo.fifoReservedEventCount = 0;
+    mSensorInfo.fifoMaxEventCount = 0;
+    mSensorInfo.requiredPermission = "";
+    mSensorInfo.flags = 0;
+};
+
+void GyroSensor::readEventPayload(EventPayload& payload) {
+    EventPayload::Vec3 vec3 = {
+            .x = 0,
+            .y = 0,
+            .z = 0,
+            .status = SensorStatus::ACCURACY_HIGH,
+    };
+    payload.set<EventPayload::Tag::vec3>(vec3);
+}
+
+AmbientTempSensor::AmbientTempSensor(int32_t sensorHandle, ISensorsEventCallback* callback)
+    : OnChangeSensor(callback) {
+    mSensorInfo.sensorHandle = sensorHandle;
+    mSensorInfo.name = "Ambient Temp Sensor";
+    mSensorInfo.vendor = "Vendor String";
+    mSensorInfo.version = 1;
+    mSensorInfo.type = SensorType::AMBIENT_TEMPERATURE;
+    mSensorInfo.typeAsString = "";
+    mSensorInfo.maxRange = 80.0f;
+    mSensorInfo.resolution = 0.01f;
+    mSensorInfo.power = 0.001f;
+    mSensorInfo.minDelayUs = 40 * 1000;  // microseconds
+    mSensorInfo.maxDelayUs = kDefaultMaxDelayUs;
+    mSensorInfo.fifoReservedEventCount = 0;
+    mSensorInfo.fifoMaxEventCount = 0;
+    mSensorInfo.requiredPermission = "";
+    mSensorInfo.flags = static_cast<uint32_t>(SensorInfo::SENSOR_FLAG_BITS_ON_CHANGE_MODE);
+};
+
+void AmbientTempSensor::readEventPayload(EventPayload& payload) {
+    payload.set<EventPayload::Tag::scalar>(40.0f);
+}
+
+RelativeHumiditySensor::RelativeHumiditySensor(int32_t sensorHandle,
+                                               ISensorsEventCallback* callback)
+    : OnChangeSensor(callback) {
+    mSensorInfo.sensorHandle = sensorHandle;
+    mSensorInfo.name = "Relative Humidity Sensor";
+    mSensorInfo.vendor = "Vendor String";
+    mSensorInfo.version = 1;
+    mSensorInfo.type = SensorType::RELATIVE_HUMIDITY;
+    mSensorInfo.typeAsString = "";
+    mSensorInfo.maxRange = 100.0f;
+    mSensorInfo.resolution = 0.1f;
+    mSensorInfo.power = 0.001f;
+    mSensorInfo.minDelayUs = 40 * 1000;  // microseconds
+    mSensorInfo.maxDelayUs = kDefaultMaxDelayUs;
+    mSensorInfo.fifoReservedEventCount = 0;
+    mSensorInfo.fifoMaxEventCount = 0;
+    mSensorInfo.requiredPermission = "";
+    mSensorInfo.flags = static_cast<uint32_t>(SensorInfo::SENSOR_FLAG_BITS_ON_CHANGE_MODE);
+}
+
+void RelativeHumiditySensor::readEventPayload(EventPayload& payload) {
+    payload.set<EventPayload::Tag::scalar>(50.0f);
+}
+
+HingeAngleSensor::HingeAngleSensor(int32_t sensorHandle, ISensorsEventCallback* callback)
+    : OnChangeSensor(callback) {
+    mSensorInfo.sensorHandle = sensorHandle;
+    mSensorInfo.name = "Hinge Angle Sensor";
+    mSensorInfo.vendor = "Vendor String";
+    mSensorInfo.version = 1;
+    mSensorInfo.type = SensorType::HINGE_ANGLE;
+    mSensorInfo.typeAsString = "";
+    mSensorInfo.maxRange = 360.0f;
+    mSensorInfo.resolution = 1.0f;
+    mSensorInfo.power = 0.001f;
+    mSensorInfo.minDelayUs = 40 * 1000;  // microseconds
+    mSensorInfo.maxDelayUs = kDefaultMaxDelayUs;
+    mSensorInfo.fifoReservedEventCount = 0;
+    mSensorInfo.fifoMaxEventCount = 0;
+    mSensorInfo.requiredPermission = "";
+    mSensorInfo.flags = static_cast<uint32_t>(SensorInfo::SENSOR_FLAG_BITS_ON_CHANGE_MODE |
+                                              SensorInfo::SENSOR_FLAG_BITS_WAKE_UP |
+                                              SensorInfo::SENSOR_FLAG_BITS_DATA_INJECTION);
+}
+
+void HingeAngleSensor::readEventPayload(EventPayload& payload) {
+    payload.set<EventPayload::Tag::scalar>(180.0f);
+}
+
+}  // namespace sensors
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
diff --git a/sensors/aidl/default/Sensors.cpp b/sensors/aidl/default/Sensors.cpp
new file mode 100644
index 0000000..65dd304
--- /dev/null
+++ b/sensors/aidl/default/Sensors.cpp
@@ -0,0 +1,157 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "sensors-impl/Sensors.h"
+
+#include <aidl/android/hardware/common/fmq/SynchronizedReadWrite.h>
+
+using ::aidl::android::hardware::common::fmq::MQDescriptor;
+using ::aidl::android::hardware::common::fmq::SynchronizedReadWrite;
+using ::aidl::android::hardware::sensors::Event;
+using ::aidl::android::hardware::sensors::ISensors;
+using ::aidl::android::hardware::sensors::ISensorsCallback;
+using ::aidl::android::hardware::sensors::SensorInfo;
+using ::ndk::ScopedAStatus;
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace sensors {
+
+ScopedAStatus Sensors::activate(int32_t in_sensorHandle, bool in_enabled) {
+    auto sensor = mSensors.find(in_sensorHandle);
+    if (sensor != mSensors.end()) {
+        sensor->second->activate(in_enabled);
+        return ScopedAStatus::ok();
+    }
+
+    return ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+}
+
+ScopedAStatus Sensors::batch(int32_t in_sensorHandle, int64_t in_samplingPeriodNs,
+                             int64_t /* in_maxReportLatencyNs */) {
+    auto sensor = mSensors.find(in_sensorHandle);
+    if (sensor != mSensors.end()) {
+        sensor->second->batch(in_samplingPeriodNs);
+        return ScopedAStatus::ok();
+    }
+
+    return ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+}
+
+ScopedAStatus Sensors::configDirectReport(int32_t /* in_sensorHandle */,
+                                          int32_t /* in_channelHandle */,
+                                          ISensors::RateLevel /* in_rate */,
+                                          int32_t* _aidl_return) {
+    *_aidl_return = EX_UNSUPPORTED_OPERATION;
+
+    return ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+}
+
+ScopedAStatus Sensors::flush(int32_t in_sensorHandle) {
+    auto sensor = mSensors.find(in_sensorHandle);
+    if (sensor != mSensors.end()) {
+        return sensor->second->flush();
+    }
+
+    return ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+}
+
+ScopedAStatus Sensors::getSensorsList(std::vector<SensorInfo>* _aidl_return) {
+    for (const auto& sensor : mSensors) {
+        _aidl_return->push_back(sensor.second->getSensorInfo());
+    }
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus Sensors::initialize(
+        const MQDescriptor<Event, SynchronizedReadWrite>& in_eventQueueDescriptor,
+        const MQDescriptor<int32_t, SynchronizedReadWrite>& in_wakeLockDescriptor,
+        const std::shared_ptr<::aidl::android::hardware::sensors::ISensorsCallback>&
+                in_sensorsCallback) {
+    ScopedAStatus result = ScopedAStatus::ok();
+
+    mEventQueue = std::make_unique<AidlMessageQueue<Event, SynchronizedReadWrite>>(
+            in_eventQueueDescriptor, true /* resetPointers */);
+
+    // Ensure that all sensors are disabled.
+    for (auto sensor : mSensors) {
+        sensor.second->activate(false);
+    }
+
+    // Stop the Wake Lock thread if it is currently running
+    if (mReadWakeLockQueueRun.load()) {
+        mReadWakeLockQueueRun = false;
+        mWakeLockThread.join();
+    }
+
+    // Save a reference to the callback
+    mCallback = in_sensorsCallback;
+
+    // Ensure that any existing EventFlag is properly deleted
+    deleteEventFlag();
+
+    // Create the EventFlag that is used to signal to the framework that sensor events have been
+    // written to the Event FMQ
+    if (EventFlag::createEventFlag(mEventQueue->getEventFlagWord(), &mEventQueueFlag) != OK) {
+        result = ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+    }
+
+    // Create the Wake Lock FMQ that is used by the framework to communicate whenever WAKE_UP
+    // events have been successfully read and handled by the framework.
+    mWakeLockQueue = std::make_unique<AidlMessageQueue<int32_t, SynchronizedReadWrite>>(
+            in_wakeLockDescriptor, true /* resetPointers */);
+
+    if (!mCallback || !mEventQueue || !mWakeLockQueue || mEventQueueFlag == nullptr) {
+        result = ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+    }
+
+    // Start the thread to read events from the Wake Lock FMQ
+    mReadWakeLockQueueRun = true;
+    mWakeLockThread = std::thread(startReadWakeLockThread, this);
+    return result;
+}
+
+ScopedAStatus Sensors::injectSensorData(const Event& in_event) {
+    auto sensor = mSensors.find(in_event.sensorHandle);
+    if (sensor != mSensors.end()) {
+        return sensor->second->injectEvent(in_event);
+    }
+    return ScopedAStatus::fromServiceSpecificError(static_cast<int32_t>(ERROR_BAD_VALUE));
+}
+
+ScopedAStatus Sensors::registerDirectChannel(const ISensors::SharedMemInfo& /* in_mem */,
+                                             int32_t* _aidl_return) {
+    *_aidl_return = EX_UNSUPPORTED_OPERATION;
+
+    return ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+}
+
+ScopedAStatus Sensors::setOperationMode(OperationMode in_mode) {
+    for (auto sensor : mSensors) {
+        sensor.second->setOperationMode(in_mode);
+    }
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus Sensors::unregisterDirectChannel(int32_t /* in_channelHandle */) {
+    return ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+}
+
+}  // namespace sensors
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
diff --git a/sensors/aidl/default/include/sensors-impl/Sensor.h b/sensors/aidl/default/include/sensors-impl/Sensor.h
new file mode 100644
index 0000000..e6cd3e6
--- /dev/null
+++ b/sensors/aidl/default/include/sensors-impl/Sensor.h
@@ -0,0 +1,168 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <thread>
+
+#include <aidl/android/hardware/sensors/BnSensors.h>
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace sensors {
+
+class ISensorsEventCallback {
+  public:
+    using Event = ::aidl::android::hardware::sensors::Event;
+
+    virtual ~ISensorsEventCallback(){};
+    virtual void postEvents(const std::vector<Event>& events, bool wakeup) = 0;
+};
+
+class Sensor {
+  public:
+    using OperationMode = ::aidl::android::hardware::sensors::ISensors::OperationMode;
+    using Event = ::aidl::android::hardware::sensors::Event;
+    using EventPayload = ::aidl::android::hardware::sensors::Event::EventPayload;
+    using SensorInfo = ::aidl::android::hardware::sensors::SensorInfo;
+    using SensorType = ::aidl::android::hardware::sensors::SensorType;
+    using MetaDataEventType =
+            ::aidl::android::hardware::sensors::Event::EventPayload::MetaData::MetaDataEventType;
+
+    Sensor(ISensorsEventCallback* callback);
+    virtual ~Sensor();
+
+    const SensorInfo& getSensorInfo() const;
+    void batch(int64_t samplingPeriodNs);
+    virtual void activate(bool enable);
+    ndk::ScopedAStatus flush();
+
+    void setOperationMode(OperationMode mode);
+    bool supportsDataInjection() const;
+    ndk::ScopedAStatus injectEvent(const Event& event);
+
+  protected:
+    void run();
+    virtual std::vector<Event> readEvents();
+    virtual void readEventPayload(EventPayload&) = 0;
+    static void startThread(Sensor* sensor);
+
+    bool isWakeUpSensor();
+
+    bool mIsEnabled;
+    int64_t mSamplingPeriodNs;
+    int64_t mLastSampleTimeNs;
+    SensorInfo mSensorInfo;
+
+    std::atomic_bool mStopThread;
+    std::condition_variable mWaitCV;
+    std::mutex mRunMutex;
+    std::thread mRunThread;
+
+    ISensorsEventCallback* mCallback;
+
+    OperationMode mMode;
+};
+
+class OnChangeSensor : public Sensor {
+  public:
+    OnChangeSensor(ISensorsEventCallback* callback);
+
+    virtual void activate(bool enable) override;
+
+  protected:
+    virtual std::vector<Event> readEvents() override;
+
+  protected:
+    Event mPreviousEvent;
+    bool mPreviousEventSet;
+};
+
+class AccelSensor : public Sensor {
+  public:
+    AccelSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
+
+  protected:
+    virtual void readEventPayload(EventPayload& payload) override;
+};
+
+class GyroSensor : public Sensor {
+  public:
+    GyroSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
+
+  protected:
+    virtual void readEventPayload(EventPayload& payload) override;
+};
+
+class AmbientTempSensor : public OnChangeSensor {
+  public:
+    AmbientTempSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
+
+  protected:
+    virtual void readEventPayload(EventPayload& payload) override;
+};
+
+class PressureSensor : public Sensor {
+  public:
+    PressureSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
+
+  protected:
+    virtual void readEventPayload(EventPayload& payload) override;
+};
+
+class MagnetometerSensor : public Sensor {
+  public:
+    MagnetometerSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
+
+  protected:
+    virtual void readEventPayload(EventPayload& payload) override;
+};
+
+class LightSensor : public OnChangeSensor {
+  public:
+    LightSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
+
+  protected:
+    virtual void readEventPayload(EventPayload& payload) override;
+};
+
+class ProximitySensor : public OnChangeSensor {
+  public:
+    ProximitySensor(int32_t sensorHandle, ISensorsEventCallback* callback);
+
+  protected:
+    virtual void readEventPayload(EventPayload& payload) override;
+};
+
+class RelativeHumiditySensor : public OnChangeSensor {
+  public:
+    RelativeHumiditySensor(int32_t sensorHandle, ISensorsEventCallback* callback);
+
+  protected:
+    virtual void readEventPayload(EventPayload& payload) override;
+};
+
+class HingeAngleSensor : public OnChangeSensor {
+  public:
+    HingeAngleSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
+
+  protected:
+    virtual void readEventPayload(EventPayload& payload) override;
+};
+
+}  // namespace sensors
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
diff --git a/sensors/aidl/default/include/sensors-impl/Sensors.h b/sensors/aidl/default/include/sensors-impl/Sensors.h
new file mode 100644
index 0000000..e270d96
--- /dev/null
+++ b/sensors/aidl/default/include/sensors-impl/Sensors.h
@@ -0,0 +1,216 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/common/fmq/SynchronizedReadWrite.h>
+#include <aidl/android/hardware/sensors/BnSensors.h>
+#include <fmq/AidlMessageQueue.h>
+#include <hardware_legacy/power.h>
+#include <map>
+#include "Sensor.h"
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace sensors {
+
+using aidl::android::hardware::common::fmq::SynchronizedReadWrite;
+using ::android::AidlMessageQueue;
+using ::android::OK;
+using ::android::status_t;
+using ::android::hardware::EventFlag;
+
+class Sensors : public BnSensors, public ISensorsEventCallback {
+    static constexpr const char* kWakeLockName = "SensorsHAL_WAKEUP";
+
+  public:
+    Sensors()
+        : mEventQueueFlag(nullptr),
+          mNextHandle(1),
+          mOutstandingWakeUpEvents(0),
+          mReadWakeLockQueueRun(false),
+          mAutoReleaseWakeLockTime(0),
+          mHasWakeLock(false) {
+        AddSensor<AccelSensor>();
+        AddSensor<GyroSensor>();
+        AddSensor<AmbientTempSensor>();
+        AddSensor<PressureSensor>();
+        AddSensor<MagnetometerSensor>();
+        AddSensor<LightSensor>();
+        AddSensor<ProximitySensor>();
+        AddSensor<RelativeHumiditySensor>();
+        AddSensor<HingeAngleSensor>();
+    }
+
+    virtual ~Sensors() {
+        deleteEventFlag();
+        mReadWakeLockQueueRun = false;
+        mWakeLockThread.join();
+    }
+
+    ::ndk::ScopedAStatus activate(int32_t in_sensorHandle, bool in_enabled) override;
+    ::ndk::ScopedAStatus batch(int32_t in_sensorHandle, int64_t in_samplingPeriodNs,
+                               int64_t in_maxReportLatencyNs) override;
+    ::ndk::ScopedAStatus configDirectReport(
+            int32_t in_sensorHandle, int32_t in_channelHandle,
+            ::aidl::android::hardware::sensors::ISensors::RateLevel in_rate,
+            int32_t* _aidl_return) override;
+    ::ndk::ScopedAStatus flush(int32_t in_sensorHandle) override;
+    ::ndk::ScopedAStatus getSensorsList(
+            std::vector<::aidl::android::hardware::sensors::SensorInfo>* _aidl_return) override;
+    ::ndk::ScopedAStatus initialize(
+            const ::aidl::android::hardware::common::fmq::MQDescriptor<
+                    ::aidl::android::hardware::sensors::Event,
+                    ::aidl::android::hardware::common::fmq::SynchronizedReadWrite>&
+                    in_eventQueueDescriptor,
+            const ::aidl::android::hardware::common::fmq::MQDescriptor<
+                    int32_t, ::aidl::android::hardware::common::fmq::SynchronizedReadWrite>&
+                    in_wakeLockDescriptor,
+            const std::shared_ptr<::aidl::android::hardware::sensors::ISensorsCallback>&
+                    in_sensorsCallback) override;
+    ::ndk::ScopedAStatus injectSensorData(
+            const ::aidl::android::hardware::sensors::Event& in_event) override;
+    ::ndk::ScopedAStatus registerDirectChannel(
+            const ::aidl::android::hardware::sensors::ISensors::SharedMemInfo& in_mem,
+            int32_t* _aidl_return) override;
+    ::ndk::ScopedAStatus setOperationMode(
+            ::aidl::android::hardware::sensors::ISensors::OperationMode in_mode) override;
+    ::ndk::ScopedAStatus unregisterDirectChannel(int32_t in_channelHandle) override;
+
+    void postEvents(const std::vector<Event>& events, bool wakeup) override {
+        std::lock_guard<std::mutex> lock(mWriteLock);
+        if (mEventQueue == nullptr) {
+            return;
+        }
+        if (mEventQueue->write(&events.front(), events.size())) {
+            mEventQueueFlag->wake(
+                    static_cast<uint32_t>(BnSensors::EVENT_QUEUE_FLAG_BITS_READ_AND_PROCESS));
+
+            if (wakeup) {
+                // Keep track of the number of outstanding WAKE_UP events in order to properly hold
+                // a wake lock until the framework has secured a wake lock
+                updateWakeLock(events.size(), 0 /* eventsHandled */);
+            }
+        }
+    }
+
+  protected:
+    // Add a new sensor
+    template <class SensorType>
+    void AddSensor() {
+        std::shared_ptr<SensorType> sensor =
+                std::make_shared<SensorType>(mNextHandle++ /* sensorHandle */, this /* callback */);
+        mSensors[sensor->getSensorInfo().sensorHandle] = sensor;
+    }
+
+    // Utility function to delete the Event Flag
+    void deleteEventFlag() {
+        if (mEventQueueFlag != nullptr) {
+            status_t status = EventFlag::deleteEventFlag(&mEventQueueFlag);
+            if (status != OK) {
+                ALOGI("Failed to delete event flag: %d", status);
+            }
+        }
+    }
+
+    static void startReadWakeLockThread(Sensors* sensors) { sensors->readWakeLockFMQ(); }
+
+    // Function to read the Wake Lock FMQ and release the wake lock when appropriate
+    void readWakeLockFMQ() {
+        while (mReadWakeLockQueueRun.load()) {
+            constexpr int64_t kReadTimeoutNs = 500 * 1000 * 1000;  // 500 ms
+            int32_t eventsHandled = 0;
+
+            // Read events from the Wake Lock FMQ. Timeout after a reasonable amount of time to
+            // ensure that any held wake lock is able to be released if it is held for too long.
+            mWakeLockQueue->readBlocking(
+                    &eventsHandled, 1 /* count */, 0 /* readNotification */,
+                    static_cast<uint32_t>(WAKE_LOCK_QUEUE_FLAG_BITS_DATA_WRITTEN), kReadTimeoutNs);
+            updateWakeLock(0 /* eventsWritten */, eventsHandled);
+        }
+    }
+
+    /**
+     * Responsible for acquiring and releasing a wake lock when there are unhandled WAKE_UP events
+     */
+    void updateWakeLock(int32_t eventsWritten, int32_t eventsHandled) {
+        std::lock_guard<std::mutex> lock(mWakeLockLock);
+        int32_t newVal = mOutstandingWakeUpEvents + eventsWritten - eventsHandled;
+        if (newVal < 0) {
+            mOutstandingWakeUpEvents = 0;
+        } else {
+            mOutstandingWakeUpEvents = newVal;
+        }
+
+        if (eventsWritten > 0) {
+            // Update the time at which the last WAKE_UP event was sent
+            mAutoReleaseWakeLockTime = ::android::uptimeMillis() +
+                                       static_cast<uint32_t>(WAKE_LOCK_TIMEOUT_SECONDS) * 1000;
+        }
+
+        if (!mHasWakeLock && mOutstandingWakeUpEvents > 0 &&
+            acquire_wake_lock(PARTIAL_WAKE_LOCK, kWakeLockName) == 0) {
+            mHasWakeLock = true;
+        } else if (mHasWakeLock) {
+            // Check if the wake lock should be released automatically if
+            // SensorTimeout::WAKE_LOCK_SECONDS has elapsed since the last WAKE_UP event was written
+            // to the Wake Lock FMQ.
+            if (::android::uptimeMillis() > mAutoReleaseWakeLockTime) {
+                ALOGD("No events read from wake lock FMQ for %d seconds, auto releasing wake lock",
+                      WAKE_LOCK_TIMEOUT_SECONDS);
+                mOutstandingWakeUpEvents = 0;
+            }
+
+            if (mOutstandingWakeUpEvents == 0 && release_wake_lock(kWakeLockName) == 0) {
+                mHasWakeLock = false;
+            }
+        }
+    }
+
+  private:
+    // The Event FMQ where sensor events are written
+    std::unique_ptr<AidlMessageQueue<Event, SynchronizedReadWrite>> mEventQueue;
+    // The Wake Lock FMQ that is read to determine when the framework has handled WAKE_UP events
+    std::unique_ptr<AidlMessageQueue<int32_t, SynchronizedReadWrite>> mWakeLockQueue;
+    // Event Flag to signal to the framework when sensor events are available to be read
+    EventFlag* mEventQueueFlag;
+    // Callback for asynchronous events, such as dynamic sensor connections.
+    std::shared_ptr<::aidl::android::hardware::sensors::ISensorsCallback> mCallback;
+    // A map of the available sensors.
+    std::map<int32_t, std::shared_ptr<Sensor>> mSensors;
+    // The next available sensor handle.
+    int32_t mNextHandle;
+    // Lock to protect writes to the FMQs.
+    std::mutex mWriteLock;
+    // Lock to protect acquiring and releasing the wake lock
+    std::mutex mWakeLockLock;
+    // Track the number of WAKE_UP events that have not been handled by the framework
+    uint32_t mOutstandingWakeUpEvents;
+    // A thread to read the Wake Lock FMQ
+    std::thread mWakeLockThread;
+    // Flag to indicate that the Wake Lock Thread should continue to run
+    std::atomic_bool mReadWakeLockQueueRun;
+    // Track the time when the wake lock should automatically be released
+    int64_t mAutoReleaseWakeLockTime;
+    // Flag to indicate if a wake lock has been acquired
+    bool mHasWakeLock;
+};
+
+}  // namespace sensors
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
diff --git a/sensors/aidl/default/main.cpp b/sensors/aidl/default/main.cpp
new file mode 100644
index 0000000..8a5a7de
--- /dev/null
+++ b/sensors/aidl/default/main.cpp
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "sensors-impl/Sensors.h"
+
+#include <android-base/logging.h>
+#include <android/binder_manager.h>
+#include <android/binder_process.h>
+
+using aidl::android::hardware::sensors::Sensors;
+
+int main() {
+    ABinderProcess_setThreadPoolMaxThreadCount(0);
+
+    // Make a default sensors service
+    auto sensor = ndk::SharedRefBase::make<Sensors>();
+    const std::string sensorName = std::string() + Sensors::descriptor + "/default";
+    binder_status_t status =
+            AServiceManager_addService(sensor->asBinder().get(), sensorName.c_str());
+    CHECK_EQ(status, STATUS_OK);
+
+    ABinderProcess_joinThreadPool();
+    return EXIT_FAILURE;  // should not reach
+}
diff --git a/sensors/aidl/default/multihal/Android.bp b/sensors/aidl/default/multihal/Android.bp
new file mode 100644
index 0000000..eee1062
--- /dev/null
+++ b/sensors/aidl/default/multihal/Android.bp
@@ -0,0 +1,58 @@
+//
+// Copyright (C) 2021 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "hardware_interfaces_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["hardware_interfaces_license"],
+}
+
+cc_library_static {
+    name: "android.hardware.sensors@aidl-multihal",
+    vendor: true,
+    header_libs: [
+        "android.hardware.sensors@2.X-multihal.header",
+        "android.hardware.sensors@2.X-shared-utils",
+    ],
+    shared_libs: [
+        "libfmq",
+        "libpower",
+        "libbase",
+        "libbinder_ndk",
+        "android.hardware.sensors@1.0",
+        "android.hardware.sensors@2.0",
+        "android.hardware.sensors@2.1",
+        "android.hardware.sensors-V1-ndk",
+    ],
+    export_include_dirs: ["include"],
+    srcs: [
+        "HalProxyAidl.cpp",
+        "ConvertUtils.cpp",
+    ],
+    visibility: [
+        ":__subpackages__",
+        "//hardware/interfaces/sensors/aidl/multihal:__subpackages__",
+        "//hardware/interfaces/tests/extension/sensors:__subpackages__",
+    ],
+    static_libs: [
+        "android.hardware.sensors@1.0-convert",
+        "android.hardware.sensors@2.X-multihal",
+        "libaidlcommonsupport",
+    ],
+}
diff --git a/sensors/aidl/default/multihal/ConvertUtils.cpp b/sensors/aidl/default/multihal/ConvertUtils.cpp
new file mode 100644
index 0000000..509bbb0
--- /dev/null
+++ b/sensors/aidl/default/multihal/ConvertUtils.cpp
@@ -0,0 +1,321 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "ConvertUtils.h"
+#include <android-base/logging.h>
+#include <log/log.h>
+
+using AidlSensorInfo = ::aidl::android::hardware::sensors::SensorInfo;
+using AidlSensorType = ::aidl::android::hardware::sensors::SensorType;
+using AidlEvent = ::aidl::android::hardware::sensors::Event;
+using AidlSensorStatus = ::aidl::android::hardware::sensors::SensorStatus;
+using ::aidl::android::hardware::sensors::AdditionalInfo;
+using ::aidl::android::hardware::sensors::DynamicSensorInfo;
+using ::android::hardware::sensors::V1_0::MetaDataEventType;
+using V1_0SensorStatus = ::android::hardware::sensors::V1_0::SensorStatus;
+using ::android::hardware::sensors::V1_0::AdditionalInfoType;
+using V2_1SensorInfo = ::android::hardware::sensors::V2_1::SensorInfo;
+using V2_1Event = ::android::hardware::sensors::V2_1::Event;
+using V2_1SensorType = ::android::hardware::sensors::V2_1::SensorType;
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace sensors {
+namespace implementation {
+
+AidlSensorInfo convertSensorInfo(const V2_1SensorInfo& sensorInfo) {
+    AidlSensorInfo aidlSensorInfo;
+    aidlSensorInfo.sensorHandle = sensorInfo.sensorHandle;
+    aidlSensorInfo.name = sensorInfo.name;
+    aidlSensorInfo.vendor = sensorInfo.vendor;
+    aidlSensorInfo.version = sensorInfo.version;
+    aidlSensorInfo.type = (AidlSensorType)sensorInfo.type;
+    aidlSensorInfo.typeAsString = sensorInfo.typeAsString;
+    aidlSensorInfo.maxRange = sensorInfo.maxRange;
+    aidlSensorInfo.resolution = sensorInfo.resolution;
+    aidlSensorInfo.power = sensorInfo.power;
+    aidlSensorInfo.minDelayUs = sensorInfo.minDelay;
+    aidlSensorInfo.fifoReservedEventCount = sensorInfo.fifoReservedEventCount;
+    aidlSensorInfo.fifoMaxEventCount = sensorInfo.fifoMaxEventCount;
+    aidlSensorInfo.requiredPermission = sensorInfo.requiredPermission;
+    aidlSensorInfo.maxDelayUs = sensorInfo.maxDelay;
+    aidlSensorInfo.flags = sensorInfo.flags;
+    return aidlSensorInfo;
+}
+
+void convertToHidlEvent(const AidlEvent& aidlEvent, V2_1Event* hidlEvent) {
+    hidlEvent->timestamp = aidlEvent.timestamp;
+    hidlEvent->sensorHandle = aidlEvent.sensorHandle;
+    hidlEvent->sensorType = (V2_1SensorType)aidlEvent.sensorType;
+
+    switch (aidlEvent.sensorType) {
+        case AidlSensorType::META_DATA:
+            hidlEvent->u.meta.what =
+                    (MetaDataEventType)aidlEvent.payload.get<Event::EventPayload::meta>().what;
+            break;
+        case AidlSensorType::ACCELEROMETER:
+        case AidlSensorType::MAGNETIC_FIELD:
+        case AidlSensorType::ORIENTATION:
+        case AidlSensorType::GYROSCOPE:
+        case AidlSensorType::GRAVITY:
+        case AidlSensorType::LINEAR_ACCELERATION:
+            hidlEvent->u.vec3.x = aidlEvent.payload.get<Event::EventPayload::vec3>().x;
+            hidlEvent->u.vec3.y = aidlEvent.payload.get<Event::EventPayload::vec3>().y;
+            hidlEvent->u.vec3.z = aidlEvent.payload.get<Event::EventPayload::vec3>().z;
+            break;
+        case AidlSensorType::GAME_ROTATION_VECTOR:
+            hidlEvent->u.vec4.x = aidlEvent.payload.get<Event::EventPayload::vec4>().x;
+            hidlEvent->u.vec4.y = aidlEvent.payload.get<Event::EventPayload::vec4>().y;
+            hidlEvent->u.vec4.z = aidlEvent.payload.get<Event::EventPayload::vec4>().z;
+            hidlEvent->u.vec4.w = aidlEvent.payload.get<Event::EventPayload::vec4>().w;
+            break;
+        case AidlSensorType::ROTATION_VECTOR:
+        case AidlSensorType::GEOMAGNETIC_ROTATION_VECTOR:
+            std::copy(aidlEvent.payload.get<Event::EventPayload::data>().values.data(),
+                      aidlEvent.payload.get<Event::EventPayload::data>().values.data() + 5,
+                      hidlEvent->u.data.data());
+            break;
+        case AidlSensorType::ACCELEROMETER_UNCALIBRATED:
+        case AidlSensorType::MAGNETIC_FIELD_UNCALIBRATED:
+        case AidlSensorType::GYROSCOPE_UNCALIBRATED:
+            hidlEvent->u.uncal.x = aidlEvent.payload.get<Event::EventPayload::uncal>().x;
+            hidlEvent->u.uncal.y = aidlEvent.payload.get<Event::EventPayload::uncal>().y;
+            hidlEvent->u.uncal.z = aidlEvent.payload.get<Event::EventPayload::uncal>().z;
+            hidlEvent->u.uncal.x_bias = aidlEvent.payload.get<Event::EventPayload::uncal>().xBias;
+            hidlEvent->u.uncal.y_bias = aidlEvent.payload.get<Event::EventPayload::uncal>().yBias;
+            hidlEvent->u.uncal.z_bias = aidlEvent.payload.get<Event::EventPayload::uncal>().zBias;
+            break;
+        case AidlSensorType::DEVICE_ORIENTATION:
+        case AidlSensorType::LIGHT:
+        case AidlSensorType::PRESSURE:
+        case AidlSensorType::PROXIMITY:
+        case AidlSensorType::RELATIVE_HUMIDITY:
+        case AidlSensorType::AMBIENT_TEMPERATURE:
+        case AidlSensorType::SIGNIFICANT_MOTION:
+        case AidlSensorType::STEP_DETECTOR:
+        case AidlSensorType::TILT_DETECTOR:
+        case AidlSensorType::WAKE_GESTURE:
+        case AidlSensorType::GLANCE_GESTURE:
+        case AidlSensorType::PICK_UP_GESTURE:
+        case AidlSensorType::WRIST_TILT_GESTURE:
+        case AidlSensorType::STATIONARY_DETECT:
+        case AidlSensorType::MOTION_DETECT:
+        case AidlSensorType::HEART_BEAT:
+        case AidlSensorType::LOW_LATENCY_OFFBODY_DETECT:
+        case AidlSensorType::HINGE_ANGLE:
+            hidlEvent->u.scalar = aidlEvent.payload.get<Event::EventPayload::scalar>();
+            break;
+        case AidlSensorType::STEP_COUNTER:
+            hidlEvent->u.stepCount = aidlEvent.payload.get<AidlEvent::EventPayload::stepCount>();
+            break;
+        case AidlSensorType::HEART_RATE:
+            hidlEvent->u.heartRate.bpm =
+                    aidlEvent.payload.get<AidlEvent::EventPayload::heartRate>().bpm;
+            hidlEvent->u.heartRate.status =
+                    (V1_0SensorStatus)aidlEvent.payload.get<Event::EventPayload::heartRate>()
+                            .status;
+            break;
+        case AidlSensorType::POSE_6DOF:
+            std::copy(std::begin(aidlEvent.payload.get<AidlEvent::EventPayload::pose6DOF>().values),
+                      std::end(aidlEvent.payload.get<AidlEvent::EventPayload::pose6DOF>().values),
+                      hidlEvent->u.pose6DOF.data());
+            break;
+        case AidlSensorType::DYNAMIC_SENSOR_META:
+            hidlEvent->u.dynamic.connected =
+                    aidlEvent.payload.get<Event::EventPayload::dynamic>().connected;
+            hidlEvent->u.dynamic.sensorHandle =
+                    aidlEvent.payload.get<Event::EventPayload::dynamic>().sensorHandle;
+            std::copy(
+                    std::begin(
+                            aidlEvent.payload.get<AidlEvent::EventPayload::dynamic>().uuid.values),
+                    std::end(aidlEvent.payload.get<AidlEvent::EventPayload::dynamic>().uuid.values),
+                    hidlEvent->u.dynamic.uuid.data());
+            break;
+        case AidlSensorType::ADDITIONAL_INFO: {
+            const AdditionalInfo& additionalInfo =
+                    aidlEvent.payload.get<AidlEvent::EventPayload::additional>();
+            hidlEvent->u.additional.type = (AdditionalInfoType)additionalInfo.type;
+            hidlEvent->u.additional.serial = additionalInfo.serial;
+
+            switch (additionalInfo.payload.getTag()) {
+                case AdditionalInfo::AdditionalInfoPayload::Tag::dataInt32: {
+                    const auto& aidlData =
+                            additionalInfo.payload
+                                    .get<AdditionalInfo::AdditionalInfoPayload::dataInt32>()
+                                    .values;
+                    std::copy(std::begin(aidlData), std::end(aidlData),
+                              hidlEvent->u.additional.u.data_int32.data());
+                    break;
+                }
+                case AdditionalInfo::AdditionalInfoPayload::Tag::dataFloat: {
+                    const auto& aidlData =
+                            additionalInfo.payload
+                                    .get<AdditionalInfo::AdditionalInfoPayload::dataFloat>()
+                                    .values;
+                    std::copy(std::begin(aidlData), std::end(aidlData),
+                              hidlEvent->u.additional.u.data_float.data());
+                    break;
+                }
+                default:
+                    ALOGE("Invalid sensor additioanl info tag: %d",
+                          additionalInfo.payload.getTag());
+                    break;
+            }
+            break;
+        }
+        default:
+            CHECK_GE((int32_t)aidlEvent.sensorType, (int32_t)SensorType::DEVICE_PRIVATE_BASE);
+            std::copy(std::begin(aidlEvent.payload.get<AidlEvent::EventPayload::data>().values),
+                      std::end(aidlEvent.payload.get<AidlEvent::EventPayload::data>().values),
+                      hidlEvent->u.data.data());
+            break;
+    }
+}
+
+void convertToAidlEvent(const V2_1Event& hidlEvent, AidlEvent* aidlEvent) {
+    aidlEvent->timestamp = hidlEvent.timestamp;
+    aidlEvent->sensorHandle = hidlEvent.sensorHandle;
+    aidlEvent->sensorType = (AidlSensorType)hidlEvent.sensorType;
+    switch (hidlEvent.sensorType) {
+        case V2_1SensorType::META_DATA: {
+            AidlEvent::EventPayload::MetaData meta;
+            meta.what = (Event::EventPayload::MetaData::MetaDataEventType)hidlEvent.u.meta.what;
+            aidlEvent->payload.set<Event::EventPayload::meta>(meta);
+            break;
+        }
+        case V2_1SensorType::ACCELEROMETER:
+        case V2_1SensorType::MAGNETIC_FIELD:
+        case V2_1SensorType::ORIENTATION:
+        case V2_1SensorType::GYROSCOPE:
+        case V2_1SensorType::GRAVITY:
+        case V2_1SensorType::LINEAR_ACCELERATION: {
+            AidlEvent::EventPayload::Vec3 vec3;
+            vec3.x = hidlEvent.u.vec3.x;
+            vec3.y = hidlEvent.u.vec3.y;
+            vec3.z = hidlEvent.u.vec3.z;
+            aidlEvent->payload.set<Event::EventPayload::vec3>(vec3);
+            break;
+        }
+        case V2_1SensorType::GAME_ROTATION_VECTOR: {
+            AidlEvent::EventPayload::Vec4 vec4;
+            vec4.x = hidlEvent.u.vec4.x;
+            vec4.y = hidlEvent.u.vec4.y;
+            vec4.z = hidlEvent.u.vec4.z;
+            vec4.w = hidlEvent.u.vec4.w;
+            aidlEvent->payload.set<Event::EventPayload::vec4>(vec4);
+            break;
+        }
+        case V2_1SensorType::ROTATION_VECTOR:
+        case V2_1SensorType::GEOMAGNETIC_ROTATION_VECTOR: {
+            AidlEvent::EventPayload::Data data;
+            std::copy(hidlEvent.u.data.data(), hidlEvent.u.data.data() + 5,
+                      std::begin(data.values));
+            aidlEvent->payload.set<Event::EventPayload::data>(data);
+            break;
+        }
+        case V2_1SensorType::MAGNETIC_FIELD_UNCALIBRATED:
+        case V2_1SensorType::GYROSCOPE_UNCALIBRATED:
+        case V2_1SensorType::ACCELEROMETER_UNCALIBRATED: {
+            AidlEvent::EventPayload::Uncal uncal;
+            uncal.x = hidlEvent.u.uncal.x;
+            uncal.y = hidlEvent.u.uncal.y;
+            uncal.z = hidlEvent.u.uncal.z;
+            uncal.xBias = hidlEvent.u.uncal.x_bias;
+            uncal.yBias = hidlEvent.u.uncal.y_bias;
+            uncal.zBias = hidlEvent.u.uncal.z_bias;
+            aidlEvent->payload.set<Event::EventPayload::uncal>(uncal);
+            break;
+        }
+        case V2_1SensorType::DEVICE_ORIENTATION:
+        case V2_1SensorType::LIGHT:
+        case V2_1SensorType::PRESSURE:
+        case V2_1SensorType::PROXIMITY:
+        case V2_1SensorType::RELATIVE_HUMIDITY:
+        case V2_1SensorType::AMBIENT_TEMPERATURE:
+        case V2_1SensorType::SIGNIFICANT_MOTION:
+        case V2_1SensorType::STEP_DETECTOR:
+        case V2_1SensorType::TILT_DETECTOR:
+        case V2_1SensorType::WAKE_GESTURE:
+        case V2_1SensorType::GLANCE_GESTURE:
+        case V2_1SensorType::PICK_UP_GESTURE:
+        case V2_1SensorType::WRIST_TILT_GESTURE:
+        case V2_1SensorType::STATIONARY_DETECT:
+        case V2_1SensorType::MOTION_DETECT:
+        case V2_1SensorType::HEART_BEAT:
+        case V2_1SensorType::LOW_LATENCY_OFFBODY_DETECT:
+        case V2_1SensorType::HINGE_ANGLE:
+            aidlEvent->payload.set<Event::EventPayload::scalar>(hidlEvent.u.scalar);
+            break;
+        case V2_1SensorType::STEP_COUNTER:
+            aidlEvent->payload.set<Event::EventPayload::stepCount>(hidlEvent.u.stepCount);
+            break;
+        case V2_1SensorType::HEART_RATE: {
+            AidlEvent::EventPayload::HeartRate heartRate;
+            heartRate.bpm = hidlEvent.u.heartRate.bpm;
+            heartRate.status = (SensorStatus)hidlEvent.u.heartRate.status;
+            aidlEvent->payload.set<Event::EventPayload::heartRate>(heartRate);
+            break;
+        }
+        case V2_1SensorType::POSE_6DOF: {
+            AidlEvent::EventPayload::Pose6Dof pose6Dof;
+            std::copy(hidlEvent.u.pose6DOF.data(),
+                      hidlEvent.u.pose6DOF.data() + hidlEvent.u.pose6DOF.size(),
+                      std::begin(pose6Dof.values));
+            aidlEvent->payload.set<Event::EventPayload::pose6DOF>(pose6Dof);
+            break;
+        }
+        case V2_1SensorType::DYNAMIC_SENSOR_META: {
+            DynamicSensorInfo dynamicSensorInfo;
+            dynamicSensorInfo.connected = hidlEvent.u.dynamic.connected;
+            dynamicSensorInfo.sensorHandle = hidlEvent.u.dynamic.sensorHandle;
+            std::copy(hidlEvent.u.dynamic.uuid.data(),
+                      hidlEvent.u.dynamic.uuid.data() + hidlEvent.u.dynamic.uuid.size(),
+                      std::begin(dynamicSensorInfo.uuid.values));
+            aidlEvent->payload.set<Event::EventPayload::dynamic>(dynamicSensorInfo);
+            break;
+        }
+        case V2_1SensorType::ADDITIONAL_INFO: {
+            AdditionalInfo additionalInfo;
+            additionalInfo.type = (AdditionalInfo::AdditionalInfoType)hidlEvent.u.additional.type;
+            additionalInfo.serial = hidlEvent.u.additional.serial;
+
+            AdditionalInfo::AdditionalInfoPayload::Int32Values int32Values;
+            std::copy(hidlEvent.u.additional.u.data_int32.data(),
+                      hidlEvent.u.additional.u.data_int32.data() +
+                              hidlEvent.u.additional.u.data_int32.size(),
+                      std::begin(int32Values.values));
+            additionalInfo.payload.set<AdditionalInfo::AdditionalInfoPayload::dataInt32>(
+                    int32Values);
+            aidlEvent->payload.set<Event::EventPayload::additional>(additionalInfo);
+            break;
+        }
+        default: {
+            CHECK_GE((int32_t)hidlEvent.sensorType, (int32_t)V2_1SensorType::DEVICE_PRIVATE_BASE);
+            AidlEvent::EventPayload::Data data;
+            std::copy(hidlEvent.u.data.data(), hidlEvent.u.data.data() + hidlEvent.u.data.size(),
+                      std::begin(data.values));
+            aidlEvent->payload.set<Event::EventPayload::data>(data);
+            break;
+        }
+    }
+}
+
+}  // namespace implementation
+}  // namespace sensors
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
diff --git a/sensors/aidl/default/multihal/HalProxyAidl.cpp b/sensors/aidl/default/multihal/HalProxyAidl.cpp
new file mode 100644
index 0000000..64805e6
--- /dev/null
+++ b/sensors/aidl/default/multihal/HalProxyAidl.cpp
@@ -0,0 +1,213 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "HalProxyAidl.h"
+#include <aidlcommonsupport/NativeHandle.h>
+#include <fmq/AidlMessageQueue.h>
+#include <hidl/Status.h>
+#include "ConvertUtils.h"
+#include "EventMessageQueueWrapperAidl.h"
+#include "ISensorsCallbackWrapperAidl.h"
+#include "WakeLockMessageQueueWrapperAidl.h"
+#include "convertV2_1.h"
+
+using ::aidl::android::hardware::common::fmq::MQDescriptor;
+using ::aidl::android::hardware::common::fmq::SynchronizedReadWrite;
+using ::aidl::android::hardware::sensors::ISensors;
+using ::aidl::android::hardware::sensors::ISensorsCallback;
+using ::android::hardware::sensors::V2_1::implementation::convertToOldEvent;
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace sensors {
+namespace implementation {
+
+static binder_status_t resultToBinderStatus(::android::hardware::sensors::V1_0::Result result) {
+    switch (result) {
+        case ::android::hardware::sensors::V1_0::Result::OK:
+            return STATUS_OK;
+        case ::android::hardware::sensors::V1_0::Result::PERMISSION_DENIED:
+            return STATUS_PERMISSION_DENIED;
+        case ::android::hardware::sensors::V1_0::Result::NO_MEMORY:
+            return STATUS_NO_MEMORY;
+        case ::android::hardware::sensors::V1_0::Result::BAD_VALUE:
+            return STATUS_BAD_VALUE;
+        case ::android::hardware::sensors::V1_0::Result::INVALID_OPERATION:
+            return STATUS_INVALID_OPERATION;
+    }
+}
+
+static ::android::hardware::sensors::V1_0::RateLevel convertRateLevel(
+        ISensors::RateLevel rateLevel) {
+    switch (rateLevel) {
+        case ISensors::RateLevel::STOP:
+            return ::android::hardware::sensors::V1_0::RateLevel::STOP;
+        case ISensors::RateLevel::NORMAL:
+            return ::android::hardware::sensors::V1_0::RateLevel::NORMAL;
+        case ISensors::RateLevel::FAST:
+            return ::android::hardware::sensors::V1_0::RateLevel::FAST;
+        case ISensors::RateLevel::VERY_FAST:
+            return ::android::hardware::sensors::V1_0::RateLevel::VERY_FAST;
+    }
+}
+
+static ::android::hardware::sensors::V1_0::OperationMode convertOperationMode(
+        ISensors::OperationMode operationMode) {
+    switch (operationMode) {
+        case ISensors::OperationMode::NORMAL:
+            return ::android::hardware::sensors::V1_0::OperationMode::NORMAL;
+        case ISensors::OperationMode::DATA_INJECTION:
+            return ::android::hardware::sensors::V1_0::OperationMode::DATA_INJECTION;
+    }
+}
+
+static ::android::hardware::sensors::V1_0::SharedMemType convertSharedMemType(
+        ISensors::SharedMemInfo::SharedMemType sharedMemType) {
+    switch (sharedMemType) {
+        case ISensors::SharedMemInfo::SharedMemType::ASHMEM:
+            return ::android::hardware::sensors::V1_0::SharedMemType::ASHMEM;
+        case ISensors::SharedMemInfo::SharedMemType::GRALLOC:
+            return ::android::hardware::sensors::V1_0::SharedMemType::GRALLOC;
+    }
+}
+
+static ::android::hardware::sensors::V1_0::SharedMemFormat convertSharedMemFormat(
+        ISensors::SharedMemInfo::SharedMemFormat sharedMemFormat) {
+    switch (sharedMemFormat) {
+        case ISensors::SharedMemInfo::SharedMemFormat::SENSORS_EVENT:
+            return ::android::hardware::sensors::V1_0::SharedMemFormat::SENSORS_EVENT;
+    }
+}
+
+static ::android::hardware::sensors::V1_0::SharedMemInfo convertSharedMemInfo(
+        const ISensors::SharedMemInfo& sharedMemInfo) {
+    ::android::hardware::sensors::V1_0::SharedMemInfo v1SharedMemInfo;
+    v1SharedMemInfo.type = convertSharedMemType(sharedMemInfo.type);
+    v1SharedMemInfo.format = convertSharedMemFormat(sharedMemInfo.format);
+    v1SharedMemInfo.size = sharedMemInfo.size;
+    v1SharedMemInfo.memoryHandle =
+            ::android::hardware::hidl_handle(::android::makeFromAidl(sharedMemInfo.memoryHandle));
+    return v1SharedMemInfo;
+}
+
+::ndk::ScopedAStatus HalProxyAidl::activate(int32_t in_sensorHandle, bool in_enabled) {
+    return ndk::ScopedAStatus::fromStatus(
+            resultToBinderStatus(HalProxy::activate(in_sensorHandle, in_enabled)));
+}
+
+::ndk::ScopedAStatus HalProxyAidl::batch(int32_t in_sensorHandle, int64_t in_samplingPeriodNs,
+                                         int64_t in_maxReportLatencyNs) {
+    return ndk::ScopedAStatus::fromStatus(resultToBinderStatus(
+            HalProxy::batch(in_sensorHandle, in_samplingPeriodNs, in_maxReportLatencyNs)));
+}
+
+::ndk::ScopedAStatus HalProxyAidl::configDirectReport(int32_t in_sensorHandle,
+                                                      int32_t in_channelHandle,
+                                                      ISensors::RateLevel in_rate,
+                                                      int32_t* _aidl_return) {
+    binder_status_t binderStatus;
+    HalProxy::configDirectReport(
+            in_sensorHandle, in_channelHandle, convertRateLevel(in_rate),
+            [&binderStatus, _aidl_return](::android::hardware::sensors::V1_0::Result result,
+                                          int32_t reportToken) {
+                binderStatus = resultToBinderStatus(result);
+                *_aidl_return = reportToken;
+            });
+    return ndk::ScopedAStatus::fromStatus(binderStatus);
+}
+
+::ndk::ScopedAStatus HalProxyAidl::flush(int32_t in_sensorHandle) {
+    return ndk::ScopedAStatus::fromStatus(resultToBinderStatus(HalProxy::flush(in_sensorHandle)));
+}
+
+::ndk::ScopedAStatus HalProxyAidl::getSensorsList(
+        std::vector<::aidl::android::hardware::sensors::SensorInfo>* _aidl_return) {
+    for (const auto& sensor : HalProxy::getSensors()) {
+        _aidl_return->push_back(convertSensorInfo(sensor.second));
+    }
+    return ndk::ScopedAStatus::ok();
+}
+
+::ndk::ScopedAStatus HalProxyAidl::initialize(
+        const MQDescriptor<::aidl::android::hardware::sensors::Event, SynchronizedReadWrite>&
+                in_eventQueueDescriptor,
+        const MQDescriptor<int32_t, SynchronizedReadWrite>& in_wakeLockDescriptor,
+        const std::shared_ptr<ISensorsCallback>& in_sensorsCallback) {
+    ::android::sp<::android::hardware::sensors::V2_1::implementation::ISensorsCallbackWrapperBase>
+            dynamicCallback = new ISensorsCallbackWrapperAidl(in_sensorsCallback);
+
+    auto aidlEventQueue =
+            std::make_unique<::android::AidlMessageQueue<::aidl::android::hardware::sensors::Event,
+                                                         SynchronizedReadWrite>>(
+                    in_eventQueueDescriptor, true /* resetPointers */);
+    std::unique_ptr<
+            ::android::hardware::sensors::V2_1::implementation::EventMessageQueueWrapperBase>
+            eventQueue = std::make_unique<EventMessageQueueWrapperAidl>(aidlEventQueue);
+
+    auto aidlWakeLockQueue =
+            std::make_unique<::android::AidlMessageQueue<int32_t, SynchronizedReadWrite>>(
+                    in_wakeLockDescriptor, true /* resetPointers */);
+    std::unique_ptr<
+            ::android::hardware::sensors::V2_1::implementation::WakeLockMessageQueueWrapperBase>
+            wakeLockQueue = std::make_unique<WakeLockMessageQueueWrapperAidl>(aidlWakeLockQueue);
+
+    return ndk::ScopedAStatus::fromStatus(
+            resultToBinderStatus(initializeCommon(eventQueue, wakeLockQueue, dynamicCallback)));
+}
+
+::ndk::ScopedAStatus HalProxyAidl::injectSensorData(
+        const ::aidl::android::hardware::sensors::Event& in_event) {
+    ::android::hardware::sensors::V2_1::Event hidlEvent;
+    convertToHidlEvent(in_event, &hidlEvent);
+    return ndk::ScopedAStatus::fromStatus(
+            resultToBinderStatus(HalProxy::injectSensorData(convertToOldEvent(hidlEvent))));
+}
+
+::ndk::ScopedAStatus HalProxyAidl::registerDirectChannel(const ISensors::SharedMemInfo& in_mem,
+                                                         int32_t* _aidl_return) {
+    binder_status_t binderStatus;
+    ::android::hardware::sensors::V1_0::SharedMemInfo sharedMemInfo = convertSharedMemInfo(in_mem);
+
+    HalProxy::registerDirectChannel(
+            sharedMemInfo,
+            [&binderStatus, _aidl_return](::android::hardware::sensors::V1_0::Result result,
+                                          int32_t reportToken) {
+                binderStatus = resultToBinderStatus(result);
+                *_aidl_return = reportToken;
+            });
+
+    native_handle_delete(
+            const_cast<native_handle_t*>(sharedMemInfo.memoryHandle.getNativeHandle()));
+    return ndk::ScopedAStatus::fromStatus(binderStatus);
+}
+
+::ndk::ScopedAStatus HalProxyAidl::setOperationMode(
+        ::aidl::android::hardware::sensors::ISensors::OperationMode in_mode) {
+    return ndk::ScopedAStatus::fromStatus(
+            resultToBinderStatus(HalProxy::setOperationMode(convertOperationMode(in_mode))));
+}
+
+::ndk::ScopedAStatus HalProxyAidl::unregisterDirectChannel(int32_t in_channelHandle) {
+    return ndk::ScopedAStatus::fromStatus(
+            resultToBinderStatus(HalProxy::unregisterDirectChannel(in_channelHandle)));
+}
+
+}  // namespace implementation
+}  // namespace sensors
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
\ No newline at end of file
diff --git a/sensors/aidl/default/multihal/include/ConvertUtils.h b/sensors/aidl/default/multihal/include/ConvertUtils.h
new file mode 100644
index 0000000..91dfabd
--- /dev/null
+++ b/sensors/aidl/default/multihal/include/ConvertUtils.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/sensors/BnSensors.h>
+#include <android/hardware/sensors/2.1/types.h>
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace sensors {
+namespace implementation {
+
+/**
+ * Generates an AIDL SensorInfo instance from the passed HIDL V2.1 SensorInfo instance.
+ */
+::aidl::android::hardware::sensors::SensorInfo convertSensorInfo(
+        const ::android::hardware::sensors::V2_1::SensorInfo& sensorInfo);
+
+/**
+ * Populates a HIDL V2.1 Event instance based on an AIDL Event instance.
+ */
+void convertToHidlEvent(const ::aidl::android::hardware::sensors::Event& aidlEvent,
+                        ::android::hardware::sensors::V2_1::Event* hidlEvent);
+
+/**
+ * Populates an AIDL Event instance based on a HIDL V2.1 Event instance.
+ */
+void convertToAidlEvent(const ::android::hardware::sensors::V2_1::Event& hidlEvent,
+                        ::aidl::android::hardware::sensors::Event* aidlEvent);
+
+}  // namespace implementation
+}  // namespace sensors
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
\ No newline at end of file
diff --git a/sensors/aidl/default/multihal/include/EventMessageQueueWrapperAidl.h b/sensors/aidl/default/multihal/include/EventMessageQueueWrapperAidl.h
new file mode 100644
index 0000000..3eaa1d4
--- /dev/null
+++ b/sensors/aidl/default/multihal/include/EventMessageQueueWrapperAidl.h
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android/hardware/sensors/2.1/types.h>
+#include <fmq/AidlMessageQueue.h>
+#include "ConvertUtils.h"
+#include "EventMessageQueueWrapper.h"
+#include "ISensorsWrapper.h"
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace sensors {
+namespace implementation {
+
+class EventMessageQueueWrapperAidl
+    : public ::android::hardware::sensors::V2_1::implementation::EventMessageQueueWrapperBase {
+  public:
+    EventMessageQueueWrapperAidl(
+            std::unique_ptr<::android::AidlMessageQueue<
+                    ::aidl::android::hardware::sensors::Event,
+                    ::aidl::android::hardware::common::fmq::SynchronizedReadWrite>>& queue)
+        : mQueue(std::move(queue)) {}
+
+    virtual std::atomic<uint32_t>* getEventFlagWord() override {
+        return mQueue->getEventFlagWord();
+    }
+
+    virtual size_t availableToRead() override { return mQueue->availableToRead(); }
+
+    size_t availableToWrite() override { return mQueue->availableToWrite(); }
+
+    virtual bool read(::android::hardware::sensors::V2_1::Event* events,
+                      size_t numToRead) override {
+        bool success = mQueue->read(mIntermediateEventBuffer.data(), numToRead);
+        for (int i = 0; i < numToRead; ++i) {
+            convertToHidlEvent(mIntermediateEventBuffer[i], &events[i]);
+        }
+        return success;
+    }
+
+    bool write(const ::android::hardware::sensors::V2_1::Event* events,
+               size_t numToWrite) override {
+        for (int i = 0; i < numToWrite; ++i) {
+            convertToAidlEvent(events[i], &mIntermediateEventBuffer[i]);
+        }
+        return mQueue->write(mIntermediateEventBuffer.data(), numToWrite);
+    }
+
+    virtual bool write(
+            const std::vector<::android::hardware::sensors::V2_1::Event>& events) override {
+        for (int i = 0; i < events.size(); ++i) {
+            convertToAidlEvent(events[i], &mIntermediateEventBuffer[i]);
+        }
+        return mQueue->write(mIntermediateEventBuffer.data(), events.size());
+    }
+
+    bool writeBlocking(const ::android::hardware::sensors::V2_1::Event* events, size_t count,
+                       uint32_t readNotification, uint32_t writeNotification, int64_t timeOutNanos,
+                       ::android::hardware::EventFlag* evFlag) override {
+        for (int i = 0; i < count; ++i) {
+            convertToAidlEvent(events[i], &mIntermediateEventBuffer[i]);
+        }
+        return mQueue->writeBlocking(mIntermediateEventBuffer.data(), count, readNotification,
+                                     writeNotification, timeOutNanos, evFlag);
+    }
+
+    size_t getQuantumCount() override { return mQueue->getQuantumCount(); }
+
+  private:
+    std::unique_ptr<::android::AidlMessageQueue<
+            ::aidl::android::hardware::sensors::Event,
+            ::aidl::android::hardware::common::fmq::SynchronizedReadWrite>>
+            mQueue;
+    std::array<::aidl::android::hardware::sensors::Event,
+               ::android::hardware::sensors::V2_1::implementation::MAX_RECEIVE_BUFFER_EVENT_COUNT>
+            mIntermediateEventBuffer;
+};
+
+}  // namespace implementation
+}  // namespace sensors
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
diff --git a/sensors/aidl/default/multihal/include/HalProxyAidl.h b/sensors/aidl/default/multihal/include/HalProxyAidl.h
new file mode 100644
index 0000000..7401726
--- /dev/null
+++ b/sensors/aidl/default/multihal/include/HalProxyAidl.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/sensors/BnSensors.h>
+#include "HalProxy.h"
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace sensors {
+namespace implementation {
+
+class HalProxyAidl : public ::android::hardware::sensors::V2_1::implementation::HalProxy,
+                     public ::aidl::android::hardware::sensors::BnSensors {
+    ::ndk::ScopedAStatus activate(int32_t in_sensorHandle, bool in_enabled) override;
+    ::ndk::ScopedAStatus batch(int32_t in_sensorHandle, int64_t in_samplingPeriodNs,
+                               int64_t in_maxReportLatencyNs) override;
+    ::ndk::ScopedAStatus configDirectReport(
+            int32_t in_sensorHandle, int32_t in_channelHandle,
+            ::aidl::android::hardware::sensors::ISensors::RateLevel in_rate,
+            int32_t* _aidl_return) override;
+    ::ndk::ScopedAStatus flush(int32_t in_sensorHandle) override;
+    ::ndk::ScopedAStatus getSensorsList(
+            std::vector<::aidl::android::hardware::sensors::SensorInfo>* _aidl_return) override;
+    ::ndk::ScopedAStatus initialize(
+            const ::aidl::android::hardware::common::fmq::MQDescriptor<
+                    ::aidl::android::hardware::sensors::Event,
+                    ::aidl::android::hardware::common::fmq::SynchronizedReadWrite>&
+                    in_eventQueueDescriptor,
+            const ::aidl::android::hardware::common::fmq::MQDescriptor<
+                    int32_t, ::aidl::android::hardware::common::fmq::SynchronizedReadWrite>&
+                    in_wakeLockDescriptor,
+            const std::shared_ptr<::aidl::android::hardware::sensors::ISensorsCallback>&
+                    in_sensorsCallback) override;
+    ::ndk::ScopedAStatus injectSensorData(
+            const ::aidl::android::hardware::sensors::Event& in_event) override;
+    ::ndk::ScopedAStatus registerDirectChannel(
+            const ::aidl::android::hardware::sensors::ISensors::SharedMemInfo& in_mem,
+            int32_t* _aidl_return) override;
+    ::ndk::ScopedAStatus setOperationMode(
+            ::aidl::android::hardware::sensors::ISensors::OperationMode in_mode) override;
+    ::ndk::ScopedAStatus unregisterDirectChannel(int32_t in_channelHandle) override;
+};
+
+}  // namespace implementation
+}  // namespace sensors
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
diff --git a/sensors/aidl/default/multihal/include/ISensorsCallbackWrapperAidl.h b/sensors/aidl/default/multihal/include/ISensorsCallbackWrapperAidl.h
new file mode 100644
index 0000000..6ef6c63
--- /dev/null
+++ b/sensors/aidl/default/multihal/include/ISensorsCallbackWrapperAidl.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "ConvertUtils.h"
+#include "ISensorsCallbackWrapper.h"
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace sensors {
+namespace implementation {
+
+static std::vector<::aidl::android::hardware::sensors::SensorInfo> convertToAidlSensorInfos(
+        const ::android::hardware::hidl_vec<::android::hardware::sensors::V2_1::SensorInfo>&
+                sensorInfos) {
+    std::vector<::aidl::android::hardware::sensors::SensorInfo> aidlSensorInfos;
+    for (const auto& sensorInfo : sensorInfos) {
+        aidlSensorInfos.push_back(convertSensorInfo(sensorInfo));
+    }
+    return aidlSensorInfos;
+}
+
+class ISensorsCallbackWrapperAidl
+    : public ::android::hardware::sensors::V2_1::implementation::ISensorsCallbackWrapperBase {
+  public:
+    ISensorsCallbackWrapperAidl(
+            std::shared_ptr<::aidl::android::hardware::sensors::ISensorsCallback> sensorsCallback)
+        : mSensorsCallback(sensorsCallback) {}
+
+    ::android::hardware::Return<void> onDynamicSensorsConnected(
+            const ::android::hardware::hidl_vec<::android::hardware::sensors::V2_1::SensorInfo>&
+                    sensorInfos) override {
+        mSensorsCallback->onDynamicSensorsConnected(convertToAidlSensorInfos(sensorInfos));
+        return ::android::hardware::Void();
+    }
+
+    ::android::hardware::Return<void> onDynamicSensorsDisconnected(
+            const ::android::hardware::hidl_vec<int32_t>& sensorHandles) override {
+        mSensorsCallback->onDynamicSensorsDisconnected(sensorHandles);
+        return ::android::hardware::Void();
+    }
+
+  private:
+    std::shared_ptr<::aidl::android::hardware::sensors::ISensorsCallback> mSensorsCallback;
+};
+
+}  // namespace implementation
+}  // namespace sensors
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
\ No newline at end of file
diff --git a/sensors/aidl/default/multihal/include/WakeLockMessageQueueWrapperAidl.h b/sensors/aidl/default/multihal/include/WakeLockMessageQueueWrapperAidl.h
new file mode 100644
index 0000000..6be0b69
--- /dev/null
+++ b/sensors/aidl/default/multihal/include/WakeLockMessageQueueWrapperAidl.h
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android/hardware/sensors/2.1/types.h>
+#include <fmq/AidlMessageQueue.h>
+#include "WakeLockMessageQueueWrapper.h"
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace sensors {
+namespace implementation {
+
+class WakeLockMessageQueueWrapperAidl
+    : public ::android::hardware::sensors::V2_1::implementation::WakeLockMessageQueueWrapperBase {
+  public:
+    WakeLockMessageQueueWrapperAidl(
+            std::unique_ptr<::android::AidlMessageQueue<
+                    int32_t, ::aidl::android::hardware::common::fmq::SynchronizedReadWrite>>& queue)
+        : mQueue(std::move(queue)) {}
+
+    virtual std::atomic<uint32_t>* getEventFlagWord() override {
+        return mQueue->getEventFlagWord();
+    }
+
+    bool readBlocking(uint32_t* wakeLocks, size_t numToRead, uint32_t readNotification,
+                      uint32_t writeNotification, int64_t timeOutNanos,
+                      ::android::hardware::EventFlag* evFlag) override {
+        return mQueue->readBlocking(reinterpret_cast<int32_t*>(wakeLocks), numToRead,
+                                    readNotification, writeNotification, timeOutNanos, evFlag);
+    }
+
+    bool write(const uint32_t* wakeLock) override {
+        return mQueue->write(reinterpret_cast<const int32_t*>(wakeLock));
+    }
+
+  private:
+    std::unique_ptr<::android::AidlMessageQueue<
+            int32_t, ::aidl::android::hardware::common::fmq::SynchronizedReadWrite>>
+            mQueue;
+};
+
+}  // namespace implementation
+}  // namespace sensors
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
diff --git a/sensors/aidl/default/sensors-default.rc b/sensors/aidl/default/sensors-default.rc
new file mode 100644
index 0000000..96da85d
--- /dev/null
+++ b/sensors/aidl/default/sensors-default.rc
@@ -0,0 +1,5 @@
+service vendor.sensors-default /vendor/bin/hw/android.hardware.sensors-service.example
+    class hal
+    user system
+    group system
+    rlimit rtprio 10 10
diff --git a/sensors/aidl/default/sensors-default.xml b/sensors/aidl/default/sensors-default.xml
new file mode 100644
index 0000000..7898a6b
--- /dev/null
+++ b/sensors/aidl/default/sensors-default.xml
@@ -0,0 +1,7 @@
+<manifest version="1.0" type="device">
+    <hal format="aidl">
+        <name>android.hardware.sensors</name>
+        <version>1</version>
+        <fqname>ISensors/default</fqname>
+    </hal>
+</manifest>
diff --git a/sensors/aidl/multihal/Android.bp b/sensors/aidl/multihal/Android.bp
new file mode 100644
index 0000000..6d35daf
--- /dev/null
+++ b/sensors/aidl/multihal/Android.bp
@@ -0,0 +1,59 @@
+//
+// Copyright (C) 2021 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "hardware_interfaces_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["hardware_interfaces_license"],
+}
+
+cc_binary {
+    name: "android.hardware.sensors-service.multihal",
+    vendor: true,
+    relative_install_path: "hw",
+    srcs: [
+        "service.cpp",
+    ],
+    header_libs: [
+        "android.hardware.sensors@2.X-multihal.header",
+        "android.hardware.sensors@2.X-shared-utils",
+    ],
+    init_rc: ["android.hardware.sensors-service-multihal.rc"],
+    vintf_fragments: ["android.hardware.sensors-multihal.xml"],
+    shared_libs: [
+        "android.hardware.sensors@2.0-ScopedWakelock",
+        "android.hardware.sensors@2.0",
+        "android.hardware.sensors@2.1",
+        "android.hardware.sensors-V1-ndk",
+        "libbase",
+        "libcutils",
+        "libfmq",
+        "liblog",
+        "libpower",
+        "libutils",
+        "libbinder_ndk",
+        "libhidlbase",
+    ],
+    static_libs: [
+        "libaidlcommonsupport",
+        "android.hardware.sensors@1.0-convert",
+        "android.hardware.sensors@2.X-multihal",
+        "android.hardware.sensors@aidl-multihal",
+    ],
+}
diff --git a/sensors/aidl/multihal/OWNERS b/sensors/aidl/multihal/OWNERS
new file mode 100644
index 0000000..e955670
--- /dev/null
+++ b/sensors/aidl/multihal/OWNERS
@@ -0,0 +1,3 @@
+arthuri@google.com
+bduddie@google.com
+stange@google.com
\ No newline at end of file
diff --git a/sensors/aidl/multihal/android.hardware.sensors-multihal.xml b/sensors/aidl/multihal/android.hardware.sensors-multihal.xml
new file mode 100644
index 0000000..d78edff
--- /dev/null
+++ b/sensors/aidl/multihal/android.hardware.sensors-multihal.xml
@@ -0,0 +1,23 @@
+<!--
+  ~ Copyright (C) 2021 The Android Open Source Project
+  ~
+  ~ Licensed under the Apache License, Version 2.0 (the "License");
+  ~ you may not use this file except in compliance with the License.
+  ~ You may obtain a copy of the License at
+  ~
+  ~      http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing, software
+  ~ distributed under the License is distributed on an "AS IS" BASIS,
+  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  -->
+
+<manifest version="1.0" type="device">
+    <hal format="aidl">
+        <name>android.hardware.sensors</name>
+        <version>1</version>
+        <fqname>ISensors/default</fqname>
+    </hal>
+</manifest>
diff --git a/sensors/aidl/multihal/android.hardware.sensors-service-multihal.rc b/sensors/aidl/multihal/android.hardware.sensors-service-multihal.rc
new file mode 100644
index 0000000..3f91a0a
--- /dev/null
+++ b/sensors/aidl/multihal/android.hardware.sensors-service-multihal.rc
@@ -0,0 +1,7 @@
+service vendor.sensors-hal-multihal /vendor/bin/hw/android.hardware.sensors-service.multihal
+    class hal
+    user system
+    group system wakelock context_hub
+    task_profiles ServiceCapacityLow
+    capabilities BLOCK_SUSPEND
+    rlimit rtprio 10 10
\ No newline at end of file
diff --git a/sensors/aidl/multihal/service.cpp b/sensors/aidl/multihal/service.cpp
new file mode 100644
index 0000000..11c108a
--- /dev/null
+++ b/sensors/aidl/multihal/service.cpp
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android/binder_manager.h>
+#include <android/binder_process.h>
+#include "HalProxyAidl.h"
+
+using ::aidl::android::hardware::sensors::implementation::HalProxyAidl;
+
+int main() {
+    ABinderProcess_setThreadPoolMaxThreadCount(0);
+
+    // Make a default multihal sensors service
+    auto halProxy = ndk::SharedRefBase::make<HalProxyAidl>();
+    const std::string halProxyName = std::string() + HalProxyAidl::descriptor + "/default";
+    binder_status_t status =
+            AServiceManager_addService(halProxy->asBinder().get(), halProxyName.c_str());
+    CHECK_EQ(status, STATUS_OK);
+
+    ABinderProcess_joinThreadPool();
+    return EXIT_FAILURE;  // should not reach
+}
diff --git a/sensors/aidl/vts/Android.bp b/sensors/aidl/vts/Android.bp
new file mode 100644
index 0000000..b5a5f15
--- /dev/null
+++ b/sensors/aidl/vts/Android.bp
@@ -0,0 +1,51 @@
+// Copyright 2021 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "hardware_interfaces_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["hardware_interfaces_license"],
+}
+
+cc_test {
+    name: "VtsAidlHalSensorsTargetTest",
+    defaults: [
+        "VtsHalTargetTestDefaults",
+        "use_libaidlvintf_gtest_helper_static",
+    ],
+    srcs: [
+        "VtsAidlHalSensorsTargetTest.cpp",
+        "SensorsAidlEnvironment.cpp",
+    ],
+    shared_libs: [
+        "libbinder",
+        "libbinder_ndk",
+        "libvndksupport",
+        "libfmq",
+        "android.hardware.common-V2-ndk",
+        "android.hardware.common.fmq-V1-ndk",
+    ],
+    static_libs: [
+        "android.hardware.sensors-V1-ndk",
+        "VtsHalSensorsTargetTestUtils",
+        "libaidlcommonsupport",
+    ],
+    test_suites: [
+        "general-tests",
+        "vts",
+    ],
+}
diff --git a/sensors/aidl/vts/OWNERS b/sensors/aidl/vts/OWNERS
new file mode 100644
index 0000000..90c2330
--- /dev/null
+++ b/sensors/aidl/vts/OWNERS
@@ -0,0 +1,3 @@
+arthuri@google.com
+bduddie@google.com
+stange@google.com
diff --git a/sensors/aidl/vts/SensorsAidlEnvironment.cpp b/sensors/aidl/vts/SensorsAidlEnvironment.cpp
new file mode 100644
index 0000000..e71251f
--- /dev/null
+++ b/sensors/aidl/vts/SensorsAidlEnvironment.cpp
@@ -0,0 +1,164 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "SensorsAidlEnvironment.h"
+
+#include <android/binder_manager.h>
+#include <log/log.h>
+
+#include <aidl/android/hardware/sensors/BnSensorsCallback.h>
+
+using aidl::android::hardware::sensors::BnSensorsCallback;
+using aidl::android::hardware::sensors::SensorInfo;
+using android::hardware::EventFlag;
+using ndk::ScopedAStatus;
+using ndk::SpAIBinder;
+
+namespace {
+
+void serviceDied(void* /* cookie */) {
+    ALOGE("Sensors HAL died (likely crashed) during test");
+    FAIL() << "Sensors HAL died during test";
+}
+
+class NoOpSensorsCallback : public BnSensorsCallback {
+  public:
+    ScopedAStatus onDynamicSensorsConnected(
+            const std::vector<SensorInfo>& /* sensorInfos */) override {
+        return ScopedAStatus::ok();
+    }
+
+    ScopedAStatus onDynamicSensorsDisconnected(
+            const std::vector<int32_t>& /* sensorHandles */) override {
+        return ScopedAStatus::ok();
+    }
+};
+
+}  // anonymous namespace
+
+SensorsAidlEnvironment::SensorsAidlEnvironment(const std::string& service_name)
+    : SensorsVtsEnvironmentBase(service_name),
+      mCallback(ndk::SharedRefBase::make<NoOpSensorsCallback>()),
+      mDeathRecipient(AIBinder_DeathRecipient_new(serviceDied)) {}
+
+bool SensorsAidlEnvironment::resetHal() {
+    bool succeed = false;
+    do {
+        mSensors = ISensors::fromBinder(
+                SpAIBinder(AServiceManager_waitForService(mServiceName.c_str())));
+        if (mSensors == nullptr) {
+            break;
+        }
+
+        AIBinder_linkToDeath(mSensors->asBinder().get(), mDeathRecipient.get(), this);
+
+        // Initialize FMQs
+        mWakeLockQueue = std::make_unique<WakeLockQueue>(MAX_RECEIVE_BUFFER_EVENT_COUNT,
+                                                         true /* configureEventFlagWord */);
+        mEventQueue = std::make_unique<EventQueue>(MAX_RECEIVE_BUFFER_EVENT_COUNT,
+                                                   true /* configureEventFlagWord */);
+
+        if (mWakeLockQueue == nullptr || mEventQueue == nullptr) {
+            break;
+        }
+
+        EventFlag::deleteEventFlag(&mEventQueueFlag);
+        EventFlag::createEventFlag(mEventQueue->getEventFlagWord(), &mEventQueueFlag);
+        if (mEventQueueFlag == nullptr) {
+            break;
+        }
+
+        mSensors->initialize(mEventQueue->dupeDesc(), mWakeLockQueue->dupeDesc(), mCallback);
+
+        std::vector<SensorInfo> sensorList;
+        if (!mSensors->getSensorsList(&sensorList).isOk()) {
+            break;
+        }
+
+        // stop each sensor individually
+        bool ok = true;
+        for (const auto& i : sensorList) {
+            if (!mSensors->activate(i.sensorHandle, false).isOk()) {
+                ok = false;
+                break;
+            }
+        }
+
+        if (!ok) {
+            break;
+        }
+
+        // mark it done
+        succeed = true;
+    } while (0);
+
+    if (!succeed) {
+        mSensors = nullptr;
+    }
+
+    return succeed;
+}
+
+void SensorsAidlEnvironment::TearDown() {
+    mStopThread = true;
+
+    if (mEventQueueFlag != nullptr) {
+        // Wake up the event queue so the poll thread can exit
+        mEventQueueFlag->wake(ISensors::EVENT_QUEUE_FLAG_BITS_READ_AND_PROCESS);
+        if (mPollThread.joinable()) {
+            mPollThread.join();
+        }
+
+        EventFlag::deleteEventFlag(&mEventQueueFlag);
+    }
+}
+
+void SensorsAidlEnvironment::startPollingThread() {
+    mStopThread = false;
+    mEvents.reserve(MAX_RECEIVE_BUFFER_EVENT_COUNT);
+    mPollThread = std::thread(pollingThread, this);
+}
+
+void SensorsAidlEnvironment::readEvents() {
+    size_t availableEvents = mEventQueue->availableToRead();
+
+    if (availableEvents == 0) {
+        uint32_t eventFlagState = 0;
+
+        mEventQueueFlag->wait(ISensors::EVENT_QUEUE_FLAG_BITS_READ_AND_PROCESS, &eventFlagState);
+        availableEvents = mEventQueue->availableToRead();
+    }
+
+    size_t eventsToRead = std::min(availableEvents, mEventBuffer.size());
+    if (eventsToRead > 0) {
+        if (mEventQueue->read(mEventBuffer.data(), eventsToRead)) {
+            mEventQueueFlag->wake(ISensors::EVENT_QUEUE_FLAG_BITS_EVENTS_READ);
+            for (size_t i = 0; i < eventsToRead; i++) {
+                addEvent(mEventBuffer[i]);
+            }
+        }
+    }
+}
+
+void SensorsAidlEnvironment::pollingThread(SensorsAidlEnvironment* env) {
+    ALOGD("polling thread start");
+
+    while (!env->mStopThread.load()) {
+        env->readEvents();
+    }
+
+    ALOGD("polling thread end");
+}
diff --git a/sensors/aidl/vts/SensorsAidlEnvironment.h b/sensors/aidl/vts/SensorsAidlEnvironment.h
new file mode 100644
index 0000000..2f5f287
--- /dev/null
+++ b/sensors/aidl/vts/SensorsAidlEnvironment.h
@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_SENSORS_AIDL_ENVIRONMENT_H
+#define ANDROID_SENSORS_AIDL_ENVIRONMENT_H
+
+#include "sensors-vts-utils/SensorsVtsEnvironmentBase.h"
+
+#include <atomic>
+#include <memory>
+#include <mutex>
+#include <thread>
+#include <vector>
+
+#include <aidl/android/hardware/sensors/ISensors.h>
+#include <fmq/AidlMessageQueue.h>
+
+using aidl::android::hardware::common::fmq::SynchronizedReadWrite;
+using aidl::android::hardware::sensors::Event;
+using aidl::android::hardware::sensors::ISensors;
+using aidl::android::hardware::sensors::ISensorsCallback;
+
+static constexpr size_t MAX_RECEIVE_BUFFER_EVENT_COUNT = 256;
+
+class SensorsAidlTest;
+
+class SensorsAidlEnvironment : public SensorsVtsEnvironmentBase<Event> {
+  public:
+    virtual void TearDown() override;
+
+  protected:
+    friend SensorsAidlTest;
+    SensorsAidlEnvironment(const std::string& service_name);
+
+    /**
+     * Resets the HAL with new FMQs and a new Event Flag
+     *
+     * @return bool true if successful, false otherwise
+     */
+    bool resetHal() override;
+
+    /**
+     * Starts the polling thread that reads sensor events from the Event FMQ
+     */
+    void startPollingThread() override;
+
+    /**
+     * Thread responsible for calling functions to read Event FMQ
+     *
+     * @param env SensorEnvironment to being polling for events on
+     */
+    static void pollingThread(SensorsAidlEnvironment* env);
+
+    /**
+     * Reads and saves sensor events from the Event FMQ
+     */
+    void readEvents();
+
+    GTEST_DISALLOW_COPY_AND_ASSIGN_(SensorsAidlEnvironment);
+
+    /**
+     * Pointer to the Sensors HAL Interface that allows the test to call HAL functions.
+     */
+    std::shared_ptr<ISensors> mSensors;
+    std::shared_ptr<ISensorsCallback> mCallback;
+
+    ndk::ScopedAIBinder_DeathRecipient mDeathRecipient;
+
+    /**
+     * Type used to simplify the creation of the Wake Lock FMQ
+     */
+    typedef android::AidlMessageQueue<int32_t, SynchronizedReadWrite> WakeLockQueue;
+    typedef android::AidlMessageQueue<Event, SynchronizedReadWrite> EventQueue;
+
+    /**
+     * The Wake Lock FMQ is used by the test to notify the Sensors HAL whenever it has processed
+     * WAKE_UP sensor events.
+     */
+    std::unique_ptr<WakeLockQueue> mWakeLockQueue;
+    std::unique_ptr<EventQueue> mEventQueue;
+
+    /**
+     * The Event Queue Flag notifies the test framework when sensor events have been written to the
+     * Event FMQ by the Sensors HAL.
+     */
+    ::android::hardware::EventFlag* mEventQueueFlag;
+
+    std::atomic_bool mStopThread;
+    std::thread mPollThread;
+
+    /**
+     * An array that is used to store sensor events read from the Event FMQ
+     */
+    std::array<Event, MAX_RECEIVE_BUFFER_EVENT_COUNT> mEventBuffer;
+};
+
+#endif  // ANDROID_SENSORS_AIDL_ENVIRONMENT_H
diff --git a/sensors/aidl/vts/SensorsAidlTestSharedMemory.h b/sensors/aidl/vts/SensorsAidlTestSharedMemory.h
new file mode 100644
index 0000000..4b5916a
--- /dev/null
+++ b/sensors/aidl/vts/SensorsAidlTestSharedMemory.h
@@ -0,0 +1,218 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_SENSORS_AIDL_TEST_SHARED_MEMORY_H
+#define ANDROID_SENSORS_AIDL_TEST_SHARED_MEMORY_H
+
+#include "sensors-vts-utils/GrallocWrapper.h"
+
+#include <aidlcommonsupport/NativeHandle.h>
+#include <android-base/macros.h>
+#include <log/log.h>
+
+#include <sys/mman.h>
+#include <cinttypes>
+
+#include <cutils/ashmem.h>
+
+using ::aidl::android::hardware::sensors::BnSensors;
+using ::aidl::android::hardware::sensors::Event;
+using ::aidl::android::hardware::sensors::ISensors;
+using ::aidl::android::hardware::sensors::SensorType;
+
+template <class SensorType, class Event>
+class SensorsAidlTestSharedMemory {
+  public:
+    static SensorsAidlTestSharedMemory* create(ISensors::SharedMemInfo::SharedMemType type,
+                                               size_t size) {
+        constexpr size_t kMaxSize =
+                128 * 1024 * 1024;  // sensor test should not need more than 128M
+        if (size == 0 || size >= kMaxSize) {
+            return nullptr;
+        }
+
+        auto m = new SensorsAidlTestSharedMemory<SensorType, Event>(type, size);
+        if (m->mSize != size || m->mBuffer == nullptr) {
+            delete m;
+            m = nullptr;
+        }
+        return m;
+    }
+
+    ISensors::SharedMemInfo getSharedMemInfo() const {
+        ISensors::SharedMemInfo mem = {
+                .type = mType,
+                .format = ISensors::SharedMemInfo::SharedMemFormat::SENSORS_EVENT,
+                .size = static_cast<int32_t>(mSize),
+                .memoryHandle = android::dupToAidl(mNativeHandle)};
+        return mem;
+    }
+    char* getBuffer() const { return mBuffer; }
+    size_t getSize() const { return mSize; }
+    std::vector<Event> parseEvents(int64_t lastCounter = -1, size_t offset = 0) const {
+        constexpr size_t kEventSize =
+                static_cast<size_t>(BnSensors::DIRECT_REPORT_SENSOR_EVENT_TOTAL_LENGTH);
+        constexpr size_t kOffsetSize =
+                static_cast<size_t>(BnSensors::DIRECT_REPORT_SENSOR_EVENT_OFFSET_SIZE_FIELD);
+        constexpr size_t kOffsetToken =
+                static_cast<size_t>(BnSensors::DIRECT_REPORT_SENSOR_EVENT_OFFSET_SIZE_REPORT_TOKEN);
+        constexpr size_t kOffsetType =
+                static_cast<size_t>(BnSensors::DIRECT_REPORT_SENSOR_EVENT_OFFSET_SIZE_SENSOR_TYPE);
+        constexpr size_t kOffsetAtomicCounter = static_cast<size_t>(
+                BnSensors::DIRECT_REPORT_SENSOR_EVENT_OFFSET_SIZE_ATOMIC_COUNTER);
+        constexpr size_t kOffsetTimestamp =
+                static_cast<size_t>(BnSensors::DIRECT_REPORT_SENSOR_EVENT_OFFSET_SIZE_TIMESTAMP);
+        constexpr size_t kOffsetData =
+                static_cast<size_t>(BnSensors::DIRECT_REPORT_SENSOR_EVENT_OFFSET_SIZE_DATA);
+
+        std::vector<Event> events;
+        std::vector<float> data(16);
+
+        while (offset + kEventSize <= mSize) {
+            int64_t atomicCounter =
+                    *reinterpret_cast<uint32_t*>(mBuffer + offset + kOffsetAtomicCounter);
+            if (atomicCounter <= lastCounter) {
+                ALOGV("atomicCounter = %" PRId64 ", lastCounter = %" PRId64, atomicCounter,
+                      lastCounter);
+                break;
+            }
+
+            int32_t size = *reinterpret_cast<int32_t*>(mBuffer + offset + kOffsetSize);
+            if (size != kEventSize) {
+                // unknown error, events parsed may be wrong, remove all
+                events.clear();
+                break;
+            }
+
+            int32_t token = *reinterpret_cast<int32_t*>(mBuffer + offset + kOffsetToken);
+            int32_t type = *reinterpret_cast<int32_t*>(mBuffer + offset + kOffsetType);
+            int64_t timestamp = *reinterpret_cast<int64_t*>(mBuffer + offset + kOffsetTimestamp);
+
+            ALOGV("offset = %zu, cnt %" PRId64 ", token %" PRId32 ", type %" PRId32
+                  ", timestamp %" PRId64,
+                  offset, atomicCounter, token, type, timestamp);
+
+            Event event = {
+                    .timestamp = timestamp,
+                    .sensorHandle = token,
+                    .sensorType = type,
+            };
+
+            event.set<Event::Data>(reinterpret_cast<float*>(mBuffer + offset + kOffsetData));
+            // event.u.data = android::hardware::hidl_array<float,
+            // 16>(reinterpret_cast<float*>(mBuffer + offset + kOffsetData));
+
+            events.push_back(event);
+
+            lastCounter = atomicCounter;
+            offset += kEventSize;
+        }
+
+        return events;
+    }
+
+    virtual ~SensorsAidlTestSharedMemory() {
+        switch (mType) {
+            case ISensors::SharedMemInfo::SharedMemType::ASHMEM: {
+                if (mSize != 0) {
+                    ::munmap(mBuffer, mSize);
+                    mBuffer = nullptr;
+
+                    ::native_handle_close(mNativeHandle);
+                    ::native_handle_delete(mNativeHandle);
+
+                    mNativeHandle = nullptr;
+                    mSize = 0;
+                }
+                break;
+            }
+            case ISensors::SharedMemInfo::SharedMemType::GRALLOC: {
+                if (mSize != 0) {
+                    mGrallocWrapper->freeBuffer(mNativeHandle);
+                    mNativeHandle = nullptr;
+                    mSize = 0;
+                }
+                break;
+            }
+            default: {
+                if (mNativeHandle != nullptr || mSize != 0 || mBuffer != nullptr) {
+                    ALOGE("SensorsAidlTestSharedMemory %p not properly destructed: "
+                          "type %d, native handle %p, size %zu, buffer %p",
+                          this, static_cast<int>(mType), mNativeHandle, mSize, mBuffer);
+                }
+                break;
+            }
+        }
+    }
+
+  private:
+    SensorsAidlTestSharedMemory(ISensors::SharedMemInfo::SharedMemType type, size_t size)
+        : mType(type), mSize(0), mBuffer(nullptr) {
+        native_handle_t* handle = nullptr;
+        char* buffer = nullptr;
+        switch (type) {
+            case ISensors::SharedMemInfo::SharedMemType::ASHMEM: {
+                int fd;
+                handle = ::native_handle_create(1 /*nFds*/, 0 /*nInts*/);
+                if (handle != nullptr) {
+                    handle->data[0] = fd =
+                            ::ashmem_create_region("SensorsAidlTestSharedMemory", size);
+                    if (handle->data[0] > 0) {
+                        // memory is pinned by default
+                        buffer = static_cast<char*>(
+                                ::mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0));
+                        if (buffer != reinterpret_cast<char*>(MAP_FAILED)) {
+                            break;
+                        }
+                        ::native_handle_close(handle);
+                    }
+                    ::native_handle_delete(handle);
+                    handle = nullptr;
+                }
+                break;
+            }
+            case ISensors::SharedMemInfo::SharedMemType::GRALLOC: {
+                mGrallocWrapper = std::make_unique<::android::GrallocWrapper>();
+                if (!mGrallocWrapper->isInitialized()) {
+                    break;
+                }
+
+                std::pair<native_handle_t*, void*> buf = mGrallocWrapper->allocate(size);
+                handle = buf.first;
+                buffer = static_cast<char*>(buf.second);
+                break;
+            }
+            default:
+                break;
+        }
+
+        if (buffer != nullptr) {
+            mNativeHandle = handle;
+            mSize = size;
+            mBuffer = buffer;
+        }
+    }
+
+    ISensors::SharedMemInfo::SharedMemType mType;
+    native_handle_t* mNativeHandle;
+    size_t mSize;
+    char* mBuffer;
+    std::unique_ptr<::android::GrallocWrapper> mGrallocWrapper;
+
+    DISALLOW_COPY_AND_ASSIGN(SensorsAidlTestSharedMemory);
+};
+
+#endif  // ANDROID_SENSORS_TEST_SHARED_MEMORY_H
diff --git a/sensors/aidl/vts/VtsAidlHalSensorsTargetTest.cpp b/sensors/aidl/vts/VtsAidlHalSensorsTargetTest.cpp
new file mode 100644
index 0000000..1bc7263
--- /dev/null
+++ b/sensors/aidl/vts/VtsAidlHalSensorsTargetTest.cpp
@@ -0,0 +1,1065 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <aidl/Gtest.h>
+#include <aidl/Vintf.h>
+
+#include <aidl/android/hardware/sensors/BnSensors.h>
+#include <aidl/android/hardware/sensors/ISensors.h>
+#include <android/binder_manager.h>
+#include <binder/IServiceManager.h>
+#include <binder/ProcessState.h>
+#include <hardware/sensors.h>
+#include <log/log.h>
+#include <utils/SystemClock.h>
+
+#include "SensorsAidlEnvironment.h"
+#include "SensorsAidlTestSharedMemory.h"
+#include "sensors-vts-utils/SensorsVtsEnvironmentBase.h"
+
+#include <cinttypes>
+#include <condition_variable>
+#include <map>
+#include <unordered_map>
+#include <unordered_set>
+#include <vector>
+
+using aidl::android::hardware::sensors::Event;
+using aidl::android::hardware::sensors::ISensors;
+using aidl::android::hardware::sensors::SensorInfo;
+using aidl::android::hardware::sensors::SensorStatus;
+using aidl::android::hardware::sensors::SensorType;
+using android::ProcessState;
+using std::chrono::duration_cast;
+
+constexpr size_t kEventSize =
+        static_cast<size_t>(ISensors::DIRECT_REPORT_SENSOR_EVENT_TOTAL_LENGTH);
+
+namespace {
+
+static void assertTypeMatchStringType(SensorType type, const std::string& stringType) {
+    if (type >= SensorType::DEVICE_PRIVATE_BASE) {
+        return;
+    }
+
+    switch (type) {
+#define CHECK_TYPE_STRING_FOR_SENSOR_TYPE(type)                      \
+    case SensorType::type:                                           \
+        ASSERT_STREQ(SENSOR_STRING_TYPE_##type, stringType.c_str()); \
+        break;
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(ACCELEROMETER);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(ACCELEROMETER_UNCALIBRATED);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(ADDITIONAL_INFO);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(AMBIENT_TEMPERATURE);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(DEVICE_ORIENTATION);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(DYNAMIC_SENSOR_META);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(GAME_ROTATION_VECTOR);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(GEOMAGNETIC_ROTATION_VECTOR);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(GLANCE_GESTURE);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(GRAVITY);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(GYROSCOPE);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(GYROSCOPE_UNCALIBRATED);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(HEART_BEAT);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(HEART_RATE);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(LIGHT);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(LINEAR_ACCELERATION);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(LOW_LATENCY_OFFBODY_DETECT);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(MAGNETIC_FIELD);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(MAGNETIC_FIELD_UNCALIBRATED);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(MOTION_DETECT);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(ORIENTATION);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(PICK_UP_GESTURE);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(POSE_6DOF);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(PRESSURE);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(PROXIMITY);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(RELATIVE_HUMIDITY);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(ROTATION_VECTOR);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(SIGNIFICANT_MOTION);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(STATIONARY_DETECT);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(STEP_COUNTER);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(STEP_DETECTOR);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(TILT_DETECTOR);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(WAKE_GESTURE);
+        CHECK_TYPE_STRING_FOR_SENSOR_TYPE(WRIST_TILT_GESTURE);
+        default:
+            FAIL() << "Type " << static_cast<int>(type)
+                   << " in android defined range is not checked, "
+                   << "stringType = " << stringType;
+#undef CHECK_TYPE_STRING_FOR_SENSOR_TYPE
+    }
+}
+
+bool isDirectChannelTypeSupported(SensorInfo sensor, ISensors::SharedMemInfo::SharedMemType type) {
+    switch (type) {
+        case ISensors::SharedMemInfo::SharedMemType::ASHMEM:
+            return (sensor.flags & SensorInfo::SENSOR_FLAG_BITS_DIRECT_CHANNEL_ASHMEM) != 0;
+        case ISensors::SharedMemInfo::SharedMemType::GRALLOC:
+            return (sensor.flags & SensorInfo::SENSOR_FLAG_BITS_DIRECT_CHANNEL_GRALLOC) != 0;
+        default:
+            return false;
+    }
+}
+
+bool isDirectReportRateSupported(SensorInfo sensor, ISensors::RateLevel rate) {
+    unsigned int r = static_cast<unsigned int>(sensor.flags &
+                                               SensorInfo::SENSOR_FLAG_BITS_MASK_DIRECT_REPORT) >>
+                     static_cast<unsigned int>(SensorInfo::SENSOR_FLAG_SHIFT_DIRECT_REPORT);
+    return r >= static_cast<unsigned int>(rate);
+}
+
+int expectedReportModeForType(SensorType type) {
+    switch (type) {
+        case SensorType::ACCELEROMETER:
+        case SensorType::ACCELEROMETER_UNCALIBRATED:
+        case SensorType::GYROSCOPE:
+        case SensorType::MAGNETIC_FIELD:
+        case SensorType::ORIENTATION:
+        case SensorType::PRESSURE:
+        case SensorType::GRAVITY:
+        case SensorType::LINEAR_ACCELERATION:
+        case SensorType::ROTATION_VECTOR:
+        case SensorType::MAGNETIC_FIELD_UNCALIBRATED:
+        case SensorType::GAME_ROTATION_VECTOR:
+        case SensorType::GYROSCOPE_UNCALIBRATED:
+        case SensorType::GEOMAGNETIC_ROTATION_VECTOR:
+        case SensorType::POSE_6DOF:
+        case SensorType::HEART_BEAT:
+            return SensorInfo::SENSOR_FLAG_BITS_CONTINUOUS_MODE;
+
+        case SensorType::LIGHT:
+        case SensorType::PROXIMITY:
+        case SensorType::RELATIVE_HUMIDITY:
+        case SensorType::AMBIENT_TEMPERATURE:
+        case SensorType::HEART_RATE:
+        case SensorType::DEVICE_ORIENTATION:
+        case SensorType::STEP_COUNTER:
+        case SensorType::LOW_LATENCY_OFFBODY_DETECT:
+            return SensorInfo::SENSOR_FLAG_BITS_ON_CHANGE_MODE;
+
+        case SensorType::SIGNIFICANT_MOTION:
+        case SensorType::WAKE_GESTURE:
+        case SensorType::GLANCE_GESTURE:
+        case SensorType::PICK_UP_GESTURE:
+        case SensorType::MOTION_DETECT:
+        case SensorType::STATIONARY_DETECT:
+            return SensorInfo::SENSOR_FLAG_BITS_ONE_SHOT_MODE;
+
+        case SensorType::STEP_DETECTOR:
+        case SensorType::TILT_DETECTOR:
+        case SensorType::WRIST_TILT_GESTURE:
+        case SensorType::DYNAMIC_SENSOR_META:
+            return SensorInfo::SENSOR_FLAG_BITS_SPECIAL_REPORTING_MODE;
+
+        default:
+            ALOGW("Type %d is not implemented in expectedReportModeForType", (int)type);
+            return INT32_MAX;
+    }
+}
+
+void assertTypeMatchReportMode(SensorType type, int reportMode) {
+    if (type >= SensorType::DEVICE_PRIVATE_BASE) {
+        return;
+    }
+
+    int expected = expectedReportModeForType(type);
+
+    ASSERT_TRUE(expected == INT32_MAX || expected == reportMode)
+            << "reportMode=" << static_cast<int>(reportMode)
+            << "expected=" << static_cast<int>(expected);
+}
+
+void assertDelayMatchReportMode(int32_t minDelayUs, int32_t maxDelayUs, int reportMode) {
+    switch (reportMode) {
+        case SensorInfo::SENSOR_FLAG_BITS_CONTINUOUS_MODE:
+            ASSERT_LT(0, minDelayUs);
+            ASSERT_LE(0, maxDelayUs);
+            break;
+        case SensorInfo::SENSOR_FLAG_BITS_ON_CHANGE_MODE:
+            ASSERT_LE(0, minDelayUs);
+            ASSERT_LE(0, maxDelayUs);
+            break;
+        case SensorInfo::SENSOR_FLAG_BITS_ONE_SHOT_MODE:
+            ASSERT_EQ(-1, minDelayUs);
+            ASSERT_EQ(0, maxDelayUs);
+            break;
+        case SensorInfo::SENSOR_FLAG_BITS_SPECIAL_REPORTING_MODE:
+            // do not enforce anything for special reporting mode
+            break;
+        default:
+            FAIL() << "Report mode " << static_cast<int>(reportMode) << " not checked";
+    }
+}
+
+void checkIsOk(ndk::ScopedAStatus status) {
+    ASSERT_TRUE(status.isOk());
+}
+
+}  // namespace
+
+class EventCallback : public IEventCallback<Event> {
+  public:
+    void reset() {
+        mFlushMap.clear();
+        mEventMap.clear();
+    }
+
+    void onEvent(const Event& event) override {
+        if (event.sensorType == SensorType::META_DATA &&
+            event.payload.get<Event::EventPayload::Tag::meta>().what ==
+                    Event::EventPayload::MetaData::MetaDataEventType::META_DATA_FLUSH_COMPLETE) {
+            std::unique_lock<std::recursive_mutex> lock(mFlushMutex);
+            mFlushMap[event.sensorHandle]++;
+            mFlushCV.notify_all();
+        } else if (event.sensorType != SensorType::ADDITIONAL_INFO) {
+            std::unique_lock<std::recursive_mutex> lock(mEventMutex);
+            mEventMap[event.sensorHandle].push_back(event);
+            mEventCV.notify_all();
+        }
+    }
+
+    int32_t getFlushCount(int32_t sensorHandle) {
+        std::unique_lock<std::recursive_mutex> lock(mFlushMutex);
+        return mFlushMap[sensorHandle];
+    }
+
+    void waitForFlushEvents(const std::vector<SensorInfo>& sensorsToWaitFor,
+                            int32_t numCallsToFlush, std::chrono::milliseconds timeout) {
+        std::unique_lock<std::recursive_mutex> lock(mFlushMutex);
+        mFlushCV.wait_for(lock, timeout,
+                          [&] { return flushesReceived(sensorsToWaitFor, numCallsToFlush); });
+    }
+
+    const std::vector<Event> getEvents(int32_t sensorHandle) {
+        std::unique_lock<std::recursive_mutex> lock(mEventMutex);
+        return mEventMap[sensorHandle];
+    }
+
+    void waitForEvents(const std::vector<SensorInfo>& sensorsToWaitFor,
+                       std::chrono::milliseconds timeout) {
+        std::unique_lock<std::recursive_mutex> lock(mEventMutex);
+        mEventCV.wait_for(lock, timeout, [&] { return eventsReceived(sensorsToWaitFor); });
+    }
+
+  protected:
+    bool flushesReceived(const std::vector<SensorInfo>& sensorsToWaitFor, int32_t numCallsToFlush) {
+        for (const SensorInfo& sensor : sensorsToWaitFor) {
+            if (getFlushCount(sensor.sensorHandle) < numCallsToFlush) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    bool eventsReceived(const std::vector<SensorInfo>& sensorsToWaitFor) {
+        for (const SensorInfo& sensor : sensorsToWaitFor) {
+            if (getEvents(sensor.sensorHandle).size() == 0) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    std::map<int32_t, int32_t> mFlushMap;
+    std::recursive_mutex mFlushMutex;
+    std::condition_variable_any mFlushCV;
+
+    std::map<int32_t, std::vector<Event>> mEventMap;
+    std::recursive_mutex mEventMutex;
+    std::condition_variable_any mEventCV;
+};
+
+class SensorsAidlTest : public testing::TestWithParam<std::string> {
+  public:
+    virtual void SetUp() override {
+        mEnvironment = new SensorsAidlEnvironment(GetParam());
+        mEnvironment->SetUp();
+
+        // Ensure that we have a valid environment before performing tests
+        ASSERT_NE(getSensors(), nullptr);
+    }
+
+    virtual void TearDown() override {
+        for (int32_t handle : mSensorHandles) {
+            activate(handle, false);
+        }
+        mSensorHandles.clear();
+
+        mEnvironment->TearDown();
+        delete mEnvironment;
+        mEnvironment = nullptr;
+    }
+
+  protected:
+    std::vector<SensorInfo> getNonOneShotSensors();
+    std::vector<SensorInfo> getNonOneShotAndNonSpecialSensors();
+    std::vector<SensorInfo> getNonOneShotAndNonOnChangeAndNonSpecialSensors();
+    std::vector<SensorInfo> getOneShotSensors();
+    std::vector<SensorInfo> getInjectEventSensors();
+
+    void verifyDirectChannel(ISensors::SharedMemInfo::SharedMemType memType);
+
+    void verifyRegisterDirectChannel(
+            std::shared_ptr<SensorsAidlTestSharedMemory<SensorType, Event>> mem,
+            int32_t* directChannelHandle, bool supportsSharedMemType,
+            bool supportsAnyDirectChannel);
+
+    void verifyConfigure(const SensorInfo& sensor, ISensors::SharedMemInfo::SharedMemType memType,
+                         int32_t directChannelHandle, bool directChannelSupported);
+
+    void queryDirectChannelSupport(ISensors::SharedMemInfo::SharedMemType memType,
+                                   bool* supportsSharedMemType, bool* supportsAnyDirectChannel);
+
+    void verifyUnregisterDirectChannel(int32_t* directChannelHandle, bool supportsAnyDirectChannel);
+
+    void checkRateLevel(const SensorInfo& sensor, int32_t directChannelHandle,
+                        ISensors::RateLevel rateLevel, int32_t* reportToken);
+
+    inline std::shared_ptr<ISensors>& getSensors() { return mEnvironment->mSensors; }
+
+    inline SensorsAidlEnvironment* getEnvironment() { return mEnvironment; }
+
+    inline bool isValidType(SensorType sensorType) { return (int)sensorType > 0; }
+
+    std::vector<SensorInfo> getSensorsList();
+
+    int32_t getInvalidSensorHandle() {
+        // Find a sensor handle that does not exist in the sensor list
+        int32_t maxHandle = 0;
+        for (const SensorInfo& sensor : getSensorsList()) {
+            maxHandle = std::max(maxHandle, sensor.sensorHandle);
+        }
+        return maxHandle + 1;
+    }
+
+    ndk::ScopedAStatus activate(int32_t sensorHandle, bool enable);
+    void activateAllSensors(bool enable);
+
+    ndk::ScopedAStatus batch(int32_t sensorHandle, int64_t samplingPeriodNs,
+                             int64_t maxReportLatencyNs) {
+        return getSensors()->batch(sensorHandle, samplingPeriodNs, maxReportLatencyNs);
+    }
+
+    ndk::ScopedAStatus flush(int32_t sensorHandle) { return getSensors()->flush(sensorHandle); }
+
+    ndk::ScopedAStatus registerDirectChannel(const ISensors::SharedMemInfo& mem,
+                                             int32_t* aidlReturn);
+
+    ndk::ScopedAStatus unregisterDirectChannel(int32_t* channelHandle) {
+        return getSensors()->unregisterDirectChannel(*channelHandle);
+    }
+
+    ndk::ScopedAStatus configDirectReport(int32_t sensorHandle, int32_t channelHandle,
+                                          ISensors::RateLevel rate, int32_t* reportToken) {
+        return getSensors()->configDirectReport(sensorHandle, channelHandle, rate, reportToken);
+    }
+
+    void runSingleFlushTest(const std::vector<SensorInfo>& sensors, bool activateSensor,
+                            int32_t expectedFlushCount, bool expectedResult);
+
+    void runFlushTest(const std::vector<SensorInfo>& sensors, bool activateSensor,
+                      int32_t flushCalls, int32_t expectedFlushCount, bool expectedResult);
+
+    inline static int32_t extractReportMode(int32_t flag) {
+        return (flag & (SensorInfo::SENSOR_FLAG_BITS_CONTINUOUS_MODE |
+                        SensorInfo::SENSOR_FLAG_BITS_ON_CHANGE_MODE |
+                        SensorInfo::SENSOR_FLAG_BITS_ONE_SHOT_MODE |
+                        SensorInfo::SENSOR_FLAG_BITS_SPECIAL_REPORTING_MODE));
+    }
+
+    // All sensors and direct channnels used
+    std::unordered_set<int32_t> mSensorHandles;
+    std::unordered_set<int32_t> mDirectChannelHandles;
+
+  private:
+    SensorsAidlEnvironment* mEnvironment;
+};
+
+ndk::ScopedAStatus SensorsAidlTest::registerDirectChannel(const ISensors::SharedMemInfo& mem,
+                                                          int32_t* aidlReturn) {
+    // If registeration of a channel succeeds, add the handle of channel to a set so that it can be
+    // unregistered when test fails. Unregister a channel does not remove the handle on purpose.
+    // Unregistering a channel more than once should not have negative effect.
+
+    ndk::ScopedAStatus status = getSensors()->registerDirectChannel(mem, aidlReturn);
+    if (status.isOk()) {
+        mDirectChannelHandles.insert(*aidlReturn);
+    }
+    return status;
+}
+
+std::vector<SensorInfo> SensorsAidlTest::getSensorsList() {
+    std::vector<SensorInfo> sensorInfoList;
+    checkIsOk(getSensors()->getSensorsList(&sensorInfoList));
+    return sensorInfoList;
+}
+
+ndk::ScopedAStatus SensorsAidlTest::activate(int32_t sensorHandle, bool enable) {
+    // If activating a sensor, add the handle in a set so that when test fails it can be turned off.
+    // The handle is not removed when it is deactivating on purpose so that it is not necessary to
+    // check the return value of deactivation. Deactivating a sensor more than once does not have
+    // negative effect.
+    if (enable) {
+        mSensorHandles.insert(sensorHandle);
+    }
+    return getSensors()->activate(sensorHandle, enable);
+}
+
+void SensorsAidlTest::activateAllSensors(bool enable) {
+    for (const SensorInfo& sensorInfo : getSensorsList()) {
+        if (isValidType(sensorInfo.type)) {
+            checkIsOk(batch(sensorInfo.sensorHandle, sensorInfo.minDelayUs,
+                            0 /* maxReportLatencyNs */));
+            checkIsOk(activate(sensorInfo.sensorHandle, enable));
+        }
+    }
+}
+
+std::vector<SensorInfo> SensorsAidlTest::getNonOneShotSensors() {
+    std::vector<SensorInfo> sensors;
+    for (const SensorInfo& info : getSensorsList()) {
+        if (extractReportMode(info.flags) != SensorInfo::SENSOR_FLAG_BITS_ONE_SHOT_MODE) {
+            sensors.push_back(info);
+        }
+    }
+    return sensors;
+}
+
+std::vector<SensorInfo> SensorsAidlTest::getNonOneShotAndNonSpecialSensors() {
+    std::vector<SensorInfo> sensors;
+    for (const SensorInfo& info : getSensorsList()) {
+        int reportMode = extractReportMode(info.flags);
+        if (reportMode != SensorInfo::SENSOR_FLAG_BITS_ONE_SHOT_MODE &&
+            reportMode != SensorInfo::SENSOR_FLAG_BITS_SPECIAL_REPORTING_MODE) {
+            sensors.push_back(info);
+        }
+    }
+    return sensors;
+}
+
+std::vector<SensorInfo> SensorsAidlTest::getNonOneShotAndNonOnChangeAndNonSpecialSensors() {
+    std::vector<SensorInfo> sensors;
+    for (const SensorInfo& info : getSensorsList()) {
+        int reportMode = extractReportMode(info.flags);
+        if (reportMode != SensorInfo::SENSOR_FLAG_BITS_ONE_SHOT_MODE &&
+            reportMode != SensorInfo::SENSOR_FLAG_BITS_ON_CHANGE_MODE &&
+            reportMode != SensorInfo::SENSOR_FLAG_BITS_SPECIAL_REPORTING_MODE) {
+            sensors.push_back(info);
+        }
+    }
+    return sensors;
+}
+
+std::vector<SensorInfo> SensorsAidlTest::getOneShotSensors() {
+    std::vector<SensorInfo> sensors;
+    for (const SensorInfo& info : getSensorsList()) {
+        if (extractReportMode(info.flags) == SensorInfo::SENSOR_FLAG_BITS_ONE_SHOT_MODE) {
+            sensors.push_back(info);
+        }
+    }
+    return sensors;
+}
+
+std::vector<SensorInfo> SensorsAidlTest::getInjectEventSensors() {
+    std::vector<SensorInfo> out;
+    std::vector<SensorInfo> sensorInfoList = getSensorsList();
+    for (const SensorInfo& info : sensorInfoList) {
+        if (info.flags & SensorInfo::SENSOR_FLAG_BITS_DATA_INJECTION) {
+            out.push_back(info);
+        }
+    }
+    return out;
+}
+
+void SensorsAidlTest::runSingleFlushTest(const std::vector<SensorInfo>& sensors,
+                                         bool activateSensor, int32_t expectedFlushCount,
+                                         bool expectedResult) {
+    runFlushTest(sensors, activateSensor, 1 /* flushCalls */, expectedFlushCount, expectedResult);
+}
+
+void SensorsAidlTest::runFlushTest(const std::vector<SensorInfo>& sensors, bool activateSensor,
+                                   int32_t flushCalls, int32_t expectedFlushCount,
+                                   bool expectedResult) {
+    EventCallback callback;
+    getEnvironment()->registerCallback(&callback);
+
+    for (const SensorInfo& sensor : sensors) {
+        // Configure and activate the sensor
+        batch(sensor.sensorHandle, sensor.maxDelayUs, 0 /* maxReportLatencyNs */);
+        activate(sensor.sensorHandle, activateSensor);
+
+        // Flush the sensor
+        for (int32_t i = 0; i < flushCalls; i++) {
+            SCOPED_TRACE(::testing::Message()
+                         << "Flush " << i << "/" << flushCalls << ": "
+                         << " handle=0x" << std::hex << std::setw(8) << std::setfill('0')
+                         << sensor.sensorHandle << std::dec
+                         << " type=" << static_cast<int>(sensor.type) << " name=" << sensor.name);
+
+            EXPECT_EQ(flush(sensor.sensorHandle).isOk(), expectedResult);
+        }
+    }
+
+    // Wait up to one second for the flush events
+    callback.waitForFlushEvents(sensors, flushCalls, std::chrono::milliseconds(1000) /* timeout */);
+
+    // Deactivate all sensors after waiting for flush events so pending flush events are not
+    // abandoned by the HAL.
+    for (const SensorInfo& sensor : sensors) {
+        activate(sensor.sensorHandle, false);
+    }
+    getEnvironment()->unregisterCallback();
+
+    // Check that the correct number of flushes are present for each sensor
+    for (const SensorInfo& sensor : sensors) {
+        SCOPED_TRACE(::testing::Message()
+                     << " handle=0x" << std::hex << std::setw(8) << std::setfill('0')
+                     << sensor.sensorHandle << std::dec << " type=" << static_cast<int>(sensor.type)
+                     << " name=" << sensor.name);
+        ASSERT_EQ(callback.getFlushCount(sensor.sensorHandle), expectedFlushCount);
+    }
+}
+
+TEST_P(SensorsAidlTest, SensorListValid) {
+    std::vector<SensorInfo> sensorInfoList = getSensorsList();
+    std::unordered_map<int32_t, std::vector<std::string>> sensorTypeNameMap;
+    for (size_t i = 0; i < sensorInfoList.size(); ++i) {
+        const SensorInfo& info = sensorInfoList[i];
+        SCOPED_TRACE(::testing::Message()
+                     << i << "/" << sensorInfoList.size() << ": "
+                     << " handle=0x" << std::hex << std::setw(8) << std::setfill('0')
+                     << info.sensorHandle << std::dec << " type=" << static_cast<int>(info.type)
+                     << " name=" << info.name);
+
+        // Test type string non-empty only for private sensor typeinfo.
+        if (info.type >= SensorType::DEVICE_PRIVATE_BASE) {
+            EXPECT_FALSE(info.typeAsString.empty());
+        } else if (!info.typeAsString.empty()) {
+            // Test type string matches framework string if specified for non-private typeinfo.
+            EXPECT_NO_FATAL_FAILURE(assertTypeMatchStringType(info.type, info.typeAsString));
+        }
+
+        // Test if all sensor has name and vendor
+        EXPECT_FALSE(info.name.empty());
+        EXPECT_FALSE(info.vendor.empty());
+
+        // Make sure that sensors of the same type have a unique name.
+        std::vector<std::string>& v = sensorTypeNameMap[static_cast<int32_t>(info.type)];
+        bool isUniqueName = std::find(v.begin(), v.end(), info.name) == v.end();
+        EXPECT_TRUE(isUniqueName) << "Duplicate sensor Name: " << info.name;
+        if (isUniqueName) {
+            v.push_back(info.name);
+        }
+
+        EXPECT_LE(0, info.power);
+        EXPECT_LT(0, info.maxRange);
+
+        // Info type, should have no sensor
+        EXPECT_FALSE(info.type == SensorType::ADDITIONAL_INFO ||
+                     info.type == SensorType::META_DATA);
+
+        EXPECT_GE(info.fifoMaxEventCount, info.fifoReservedEventCount);
+
+        // Test Reporting mode valid
+        EXPECT_NO_FATAL_FAILURE(
+                assertTypeMatchReportMode(info.type, extractReportMode(info.flags)));
+
+        // Test min max are in the right order
+        EXPECT_LE(info.minDelayUs, info.maxDelayUs);
+        // Test min/max delay matches reporting mode
+        EXPECT_NO_FATAL_FAILURE(assertDelayMatchReportMode(info.minDelayUs, info.maxDelayUs,
+                                                           extractReportMode(info.flags)));
+    }
+}
+
+TEST_P(SensorsAidlTest, SetOperationMode) {
+    if (getInjectEventSensors().size() > 0) {
+        ASSERT_TRUE(getSensors()->setOperationMode(ISensors::OperationMode::NORMAL).isOk());
+        ASSERT_TRUE(getSensors()->setOperationMode(ISensors::OperationMode::DATA_INJECTION).isOk());
+        ASSERT_TRUE(getSensors()->setOperationMode(ISensors::OperationMode::NORMAL).isOk());
+    } else {
+        ASSERT_EQ(getSensors()
+                          ->setOperationMode(ISensors::OperationMode::DATA_INJECTION)
+                          .getExceptionCode(),
+                  EX_UNSUPPORTED_OPERATION);
+    }
+}
+
+TEST_P(SensorsAidlTest, InjectSensorEventData) {
+    std::vector<SensorInfo> sensors = getInjectEventSensors();
+    if (sensors.size() == 0) {
+        return;
+    }
+
+    ASSERT_TRUE(getSensors()->setOperationMode(ISensors::OperationMode::DATA_INJECTION).isOk());
+
+    EventCallback callback;
+    getEnvironment()->registerCallback(&callback);
+
+    // AdditionalInfo event should not be sent to Event FMQ
+    Event additionalInfoEvent;
+    additionalInfoEvent.sensorType = SensorType::ADDITIONAL_INFO;
+    additionalInfoEvent.timestamp = android::elapsedRealtimeNano();
+
+    Event injectedEvent;
+    injectedEvent.timestamp = android::elapsedRealtimeNano();
+    Event::EventPayload::Vec3 data = {1, 2, 3, SensorStatus::ACCURACY_HIGH};
+    injectedEvent.payload.set<Event::EventPayload::Tag::vec3>(data);
+
+    for (const auto& s : sensors) {
+        additionalInfoEvent.sensorHandle = s.sensorHandle;
+        ASSERT_TRUE(getSensors()->injectSensorData(additionalInfoEvent).isOk());
+
+        injectedEvent.sensorType = s.type;
+        injectedEvent.sensorHandle = s.sensorHandle;
+        ASSERT_TRUE(getSensors()->injectSensorData(injectedEvent).isOk());
+    }
+
+    // Wait for events to be written back to the Event FMQ
+    callback.waitForEvents(sensors, std::chrono::milliseconds(1000) /* timeout */);
+    getEnvironment()->unregisterCallback();
+
+    for (const auto& s : sensors) {
+        auto events = callback.getEvents(s.sensorHandle);
+        if (events.empty()) {
+            FAIL() << "Received no events";
+        } else {
+            auto lastEvent = events.back();
+            SCOPED_TRACE(::testing::Message()
+                         << " handle=0x" << std::hex << std::setw(8) << std::setfill('0')
+                         << s.sensorHandle << std::dec << " type=" << static_cast<int>(s.type)
+                         << " name=" << s.name);
+
+            // Verify that only a single event has been received
+            ASSERT_EQ(events.size(), 1);
+
+            // Verify that the event received matches the event injected and is not the additional
+            // info event
+            ASSERT_EQ(lastEvent.sensorType, s.type);
+            ASSERT_EQ(lastEvent.timestamp, injectedEvent.timestamp);
+            ASSERT_EQ(lastEvent.payload.get<Event::EventPayload::Tag::vec3>().x,
+                      injectedEvent.payload.get<Event::EventPayload::Tag::vec3>().x);
+            ASSERT_EQ(lastEvent.payload.get<Event::EventPayload::Tag::vec3>().y,
+                      injectedEvent.payload.get<Event::EventPayload::Tag::vec3>().y);
+            ASSERT_EQ(lastEvent.payload.get<Event::EventPayload::Tag::vec3>().z,
+                      injectedEvent.payload.get<Event::EventPayload::Tag::vec3>().z);
+            ASSERT_EQ(lastEvent.payload.get<Event::EventPayload::Tag::vec3>().status,
+                      injectedEvent.payload.get<Event::EventPayload::Tag::vec3>().status);
+        }
+    }
+
+    ASSERT_TRUE(getSensors()->setOperationMode(ISensors::OperationMode::NORMAL).isOk());
+}
+
+TEST_P(SensorsAidlTest, CallInitializeTwice) {
+    // Create a helper class so that a second environment is able to be instantiated
+    class SensorsAidlEnvironmentTest : public SensorsAidlEnvironment {
+      public:
+        SensorsAidlEnvironmentTest(const std::string& service_name)
+            : SensorsAidlEnvironment(service_name) {}
+    };
+
+    if (getSensorsList().size() == 0) {
+        // No sensors
+        return;
+    }
+
+    constexpr useconds_t kCollectionTimeoutUs = 1000 * 1000;  // 1s
+    constexpr int32_t kNumEvents = 1;
+
+    // Create a new environment that calls initialize()
+    std::unique_ptr<SensorsAidlEnvironmentTest> newEnv =
+            std::make_unique<SensorsAidlEnvironmentTest>(GetParam());
+    newEnv->SetUp();
+    if (HasFatalFailure()) {
+        return;  // Exit early if setting up the new environment failed
+    }
+
+    activateAllSensors(true);
+    // Verify that the old environment does not receive any events
+    EXPECT_EQ(getEnvironment()->collectEvents(kCollectionTimeoutUs, kNumEvents).size(), 0);
+    // Verify that the new event queue receives sensor events
+    EXPECT_GE(newEnv.get()->collectEvents(kCollectionTimeoutUs, kNumEvents).size(), kNumEvents);
+    activateAllSensors(false);
+
+    // Cleanup the test environment
+    newEnv->TearDown();
+
+    // Restore the test environment for future tests
+    getEnvironment()->TearDown();
+    getEnvironment()->SetUp();
+    if (HasFatalFailure()) {
+        return;  // Exit early if resetting the environment failed
+    }
+
+    // Ensure that the original environment is receiving events
+    activateAllSensors(true);
+    EXPECT_GE(getEnvironment()->collectEvents(kCollectionTimeoutUs, kNumEvents).size(), kNumEvents);
+    activateAllSensors(false);
+}
+
+TEST_P(SensorsAidlTest, CleanupConnectionsOnInitialize) {
+    activateAllSensors(true);
+
+    // Verify that events are received
+    constexpr useconds_t kCollectionTimeoutUs = 1000 * 1000;  // 1s
+    constexpr int32_t kNumEvents = 1;
+    ASSERT_GE(getEnvironment()->collectEvents(kCollectionTimeoutUs, kNumEvents).size(), kNumEvents);
+
+    // Clear the active sensor handles so they are not disabled during TearDown
+    auto handles = mSensorHandles;
+    mSensorHandles.clear();
+    getEnvironment()->TearDown();
+    getEnvironment()->SetUp();
+    if (HasFatalFailure()) {
+        return;  // Exit early if resetting the environment failed
+    }
+
+    // Verify no events are received until sensors are re-activated
+    ASSERT_EQ(getEnvironment()->collectEvents(kCollectionTimeoutUs, kNumEvents).size(), 0);
+    activateAllSensors(true);
+    ASSERT_GE(getEnvironment()->collectEvents(kCollectionTimeoutUs, kNumEvents).size(), kNumEvents);
+
+    // Disable sensors
+    activateAllSensors(false);
+
+    // Restore active sensors prior to clearing the environment
+    mSensorHandles = handles;
+}
+
+TEST_P(SensorsAidlTest, FlushSensor) {
+    std::vector<SensorInfo> sensors = getNonOneShotSensors();
+    if (sensors.size() == 0) {
+        return;
+    }
+
+    constexpr int32_t kFlushes = 5;
+    runSingleFlushTest(sensors, true /* activateSensor */, 1 /* expectedFlushCount */,
+                       true /* expectedResult */);
+    runFlushTest(sensors, true /* activateSensor */, kFlushes, kFlushes, true /* expectedResult */);
+}
+
+TEST_P(SensorsAidlTest, FlushOneShotSensor) {
+    // Find a sensor that is a one-shot sensor
+    std::vector<SensorInfo> sensors = getOneShotSensors();
+    if (sensors.size() == 0) {
+        return;
+    }
+
+    runSingleFlushTest(sensors, true /* activateSensor */, 0 /* expectedFlushCount */,
+                       false /* expectedResult */);
+}
+
+TEST_P(SensorsAidlTest, FlushInactiveSensor) {
+    // Attempt to find a non-one shot sensor, then a one-shot sensor if necessary
+    std::vector<SensorInfo> sensors = getNonOneShotSensors();
+    if (sensors.size() == 0) {
+        sensors = getOneShotSensors();
+        if (sensors.size() == 0) {
+            return;
+        }
+    }
+
+    runSingleFlushTest(sensors, false /* activateSensor */, 0 /* expectedFlushCount */,
+                       false /* expectedResult */);
+}
+
+TEST_P(SensorsAidlTest, Batch) {
+    if (getSensorsList().size() == 0) {
+        return;
+    }
+
+    activateAllSensors(false /* enable */);
+    for (const SensorInfo& sensor : getSensorsList()) {
+        SCOPED_TRACE(::testing::Message()
+                     << " handle=0x" << std::hex << std::setw(8) << std::setfill('0')
+                     << sensor.sensorHandle << std::dec << " type=" << static_cast<int>(sensor.type)
+                     << " name=" << sensor.name);
+
+        // Call batch on inactive sensor
+        // One shot sensors have minDelay set to -1 which is an invalid
+        // parameter. Use 0 instead to avoid errors.
+        int64_t samplingPeriodNs =
+                extractReportMode(sensor.flags) == SensorInfo::SENSOR_FLAG_BITS_ONE_SHOT_MODE
+                        ? 0
+                        : sensor.minDelayUs;
+        checkIsOk(batch(sensor.sensorHandle, samplingPeriodNs, 0 /* maxReportLatencyNs */));
+
+        // Activate the sensor
+        activate(sensor.sensorHandle, true /* enabled */);
+
+        // Call batch on an active sensor
+        checkIsOk(batch(sensor.sensorHandle, sensor.maxDelayUs, 0 /* maxReportLatencyNs */));
+    }
+    activateAllSensors(false /* enable */);
+
+    // Call batch on an invalid sensor
+    SensorInfo sensor = getSensorsList().front();
+    sensor.sensorHandle = getInvalidSensorHandle();
+    ASSERT_EQ(batch(sensor.sensorHandle, sensor.minDelayUs, 0 /* maxReportLatencyNs */)
+                      .getExceptionCode(),
+              EX_ILLEGAL_ARGUMENT);
+}
+
+TEST_P(SensorsAidlTest, Activate) {
+    if (getSensorsList().size() == 0) {
+        return;
+    }
+
+    // Verify that sensor events are generated when activate is called
+    for (const SensorInfo& sensor : getSensorsList()) {
+        SCOPED_TRACE(::testing::Message()
+                     << " handle=0x" << std::hex << std::setw(8) << std::setfill('0')
+                     << sensor.sensorHandle << std::dec << " type=" << static_cast<int>(sensor.type)
+                     << " name=" << sensor.name);
+
+        checkIsOk(batch(sensor.sensorHandle, sensor.minDelayUs, 0 /* maxReportLatencyNs */));
+        checkIsOk(activate(sensor.sensorHandle, true));
+
+        // Call activate on a sensor that is already activated
+        checkIsOk(activate(sensor.sensorHandle, true));
+
+        // Deactivate the sensor
+        checkIsOk(activate(sensor.sensorHandle, false));
+
+        // Call deactivate on a sensor that is already deactivated
+        checkIsOk(activate(sensor.sensorHandle, false));
+    }
+
+    // Attempt to activate an invalid sensor
+    int32_t invalidHandle = getInvalidSensorHandle();
+    ASSERT_EQ(activate(invalidHandle, true).getExceptionCode(), EX_ILLEGAL_ARGUMENT);
+    ASSERT_EQ(activate(invalidHandle, false).getExceptionCode(), EX_ILLEGAL_ARGUMENT);
+}
+
+TEST_P(SensorsAidlTest, NoStaleEvents) {
+    constexpr std::chrono::milliseconds kFiveHundredMs(500);
+    constexpr std::chrono::milliseconds kOneSecond(1000);
+
+    // Register the callback to receive sensor events
+    EventCallback callback;
+    getEnvironment()->registerCallback(&callback);
+
+    // This test is not valid for one-shot, on-change or special-report-mode sensors
+    const std::vector<SensorInfo> sensors = getNonOneShotAndNonOnChangeAndNonSpecialSensors();
+    std::chrono::milliseconds maxMinDelay(0);
+    for (const SensorInfo& sensor : sensors) {
+        std::chrono::milliseconds minDelay = duration_cast<std::chrono::milliseconds>(
+                std::chrono::microseconds(sensor.minDelayUs));
+        maxMinDelay = std::chrono::milliseconds(std::max(maxMinDelay.count(), minDelay.count()));
+    }
+
+    // Activate the sensors so that they start generating events
+    activateAllSensors(true);
+
+    // According to the CDD, the first sample must be generated within 400ms + 2 * sample_time
+    // and the maximum reporting latency is 100ms + 2 * sample_time. Wait a sufficient amount
+    // of time to guarantee that a sample has arrived.
+    callback.waitForEvents(sensors, kFiveHundredMs + (5 * maxMinDelay));
+    activateAllSensors(false);
+
+    // Save the last received event for each sensor
+    std::map<int32_t, int64_t> lastEventTimestampMap;
+    for (const SensorInfo& sensor : sensors) {
+        SCOPED_TRACE(::testing::Message()
+                     << " handle=0x" << std::hex << std::setw(8) << std::setfill('0')
+                     << sensor.sensorHandle << std::dec << " type=" << static_cast<int>(sensor.type)
+                     << " name=" << sensor.name);
+
+        if (callback.getEvents(sensor.sensorHandle).size() >= 1) {
+            lastEventTimestampMap[sensor.sensorHandle] =
+                    callback.getEvents(sensor.sensorHandle).back().timestamp;
+        }
+    }
+
+    // Allow some time to pass, reset the callback, then reactivate the sensors
+    usleep(duration_cast<std::chrono::microseconds>(kOneSecond + (5 * maxMinDelay)).count());
+    callback.reset();
+    activateAllSensors(true);
+    callback.waitForEvents(sensors, kFiveHundredMs + (5 * maxMinDelay));
+    activateAllSensors(false);
+
+    getEnvironment()->unregisterCallback();
+
+    for (const SensorInfo& sensor : sensors) {
+        SCOPED_TRACE(::testing::Message()
+                     << " handle=0x" << std::hex << std::setw(8) << std::setfill('0')
+                     << sensor.sensorHandle << std::dec << " type=" << static_cast<int>(sensor.type)
+                     << " name=" << sensor.name);
+
+        // Skip sensors that did not previously report an event
+        if (lastEventTimestampMap.find(sensor.sensorHandle) == lastEventTimestampMap.end()) {
+            continue;
+        }
+
+        // Ensure that the first event received is not stale by ensuring that its timestamp is
+        // sufficiently different from the previous event
+        const Event newEvent = callback.getEvents(sensor.sensorHandle).front();
+        std::chrono::milliseconds delta =
+                duration_cast<std::chrono::milliseconds>(std::chrono::nanoseconds(
+                        newEvent.timestamp - lastEventTimestampMap[sensor.sensorHandle]));
+        std::chrono::milliseconds sensorMinDelay = duration_cast<std::chrono::milliseconds>(
+                std::chrono::microseconds(sensor.minDelayUs));
+        ASSERT_GE(delta, kFiveHundredMs + (3 * sensorMinDelay));
+    }
+}
+
+void SensorsAidlTest::checkRateLevel(const SensorInfo& sensor, int32_t directChannelHandle,
+                                     ISensors::RateLevel rateLevel, int32_t* reportToken) {
+    ndk::ScopedAStatus status =
+            configDirectReport(sensor.sensorHandle, directChannelHandle, rateLevel, reportToken);
+
+    SCOPED_TRACE(::testing::Message()
+                 << " handle=0x" << std::hex << std::setw(8) << std::setfill('0')
+                 << sensor.sensorHandle << std::dec << " type=" << static_cast<int>(sensor.type)
+                 << " name=" << sensor.name);
+
+    if (isDirectReportRateSupported(sensor, rateLevel)) {
+        ASSERT_TRUE(status.isOk());
+        if (rateLevel != ISensors::RateLevel::STOP) {
+            ASSERT_GT(*reportToken, 0);
+        } else {
+            ASSERT_EQ(status.getExceptionCode(), EX_ILLEGAL_ARGUMENT);
+        }
+    }
+}
+
+void SensorsAidlTest::queryDirectChannelSupport(ISensors::SharedMemInfo::SharedMemType memType,
+                                                bool* supportsSharedMemType,
+                                                bool* supportsAnyDirectChannel) {
+    *supportsSharedMemType = false;
+    *supportsAnyDirectChannel = false;
+    for (const SensorInfo& curSensor : getSensorsList()) {
+        if (isDirectChannelTypeSupported(curSensor, memType)) {
+            *supportsSharedMemType = true;
+        }
+        if (isDirectChannelTypeSupported(curSensor,
+                                         ISensors::SharedMemInfo::SharedMemType::ASHMEM) ||
+            isDirectChannelTypeSupported(curSensor,
+                                         ISensors::SharedMemInfo::SharedMemType::GRALLOC)) {
+            *supportsAnyDirectChannel = true;
+        }
+
+        if (*supportsSharedMemType && *supportsAnyDirectChannel) {
+            break;
+        }
+    }
+}
+
+void SensorsAidlTest::verifyRegisterDirectChannel(
+        std::shared_ptr<SensorsAidlTestSharedMemory<SensorType, Event>> mem,
+        int32_t* directChannelHandle, bool supportsSharedMemType, bool supportsAnyDirectChannel) {
+    char* buffer = mem->getBuffer();
+    size_t size = mem->getSize();
+
+    if (supportsSharedMemType) {
+        memset(buffer, 0xff, size);
+    }
+
+    int32_t channelHandle;
+
+    ::ndk::ScopedAStatus status = registerDirectChannel(mem->getSharedMemInfo(), &channelHandle);
+    if (supportsSharedMemType) {
+        ASSERT_TRUE(status.isOk());
+        ASSERT_EQ(channelHandle, 0);
+    } else {
+        int32_t error = supportsAnyDirectChannel ? EX_ILLEGAL_ARGUMENT : EX_UNSUPPORTED_OPERATION;
+        ASSERT_EQ(status.getExceptionCode(), error);
+        ASSERT_EQ(channelHandle, -1);
+    }
+    *directChannelHandle = channelHandle;
+}
+
+void SensorsAidlTest::verifyUnregisterDirectChannel(int32_t* channelHandle,
+                                                    bool supportsAnyDirectChannel) {
+    int result = supportsAnyDirectChannel ? EX_NONE : EX_UNSUPPORTED_OPERATION;
+    ndk::ScopedAStatus status = unregisterDirectChannel(channelHandle);
+    ASSERT_EQ(status.getExceptionCode(), result);
+}
+
+void SensorsAidlTest::verifyDirectChannel(ISensors::SharedMemInfo::SharedMemType memType) {
+    constexpr size_t kNumEvents = 1;
+    constexpr size_t kMemSize = kNumEvents * kEventSize;
+
+    std::shared_ptr<SensorsAidlTestSharedMemory<SensorType, Event>> mem(
+            SensorsAidlTestSharedMemory<SensorType, Event>::create(memType, kMemSize));
+    ASSERT_NE(mem, nullptr);
+
+    bool supportsSharedMemType;
+    bool supportsAnyDirectChannel;
+    queryDirectChannelSupport(memType, &supportsSharedMemType, &supportsAnyDirectChannel);
+
+    for (const SensorInfo& sensor : getSensorsList()) {
+        int32_t directChannelHandle = 0;
+        verifyRegisterDirectChannel(mem, &directChannelHandle, supportsSharedMemType,
+                                    supportsAnyDirectChannel);
+        verifyConfigure(sensor, memType, directChannelHandle, supportsAnyDirectChannel);
+        verifyUnregisterDirectChannel(&directChannelHandle, supportsAnyDirectChannel);
+    }
+}
+
+void SensorsAidlTest::verifyConfigure(const SensorInfo& sensor,
+                                      ISensors::SharedMemInfo::SharedMemType memType,
+                                      int32_t directChannelHandle, bool supportsAnyDirectChannel) {
+    SCOPED_TRACE(::testing::Message()
+                 << " handle=0x" << std::hex << std::setw(8) << std::setfill('0')
+                 << sensor.sensorHandle << std::dec << " type=" << static_cast<int>(sensor.type)
+                 << " name=" << sensor.name);
+
+    int32_t reportToken = 0;
+    if (isDirectChannelTypeSupported(sensor, memType)) {
+        // Verify that each rate level is properly supported
+        checkRateLevel(sensor, directChannelHandle, ISensors::RateLevel::NORMAL, &reportToken);
+        checkRateLevel(sensor, directChannelHandle, ISensors::RateLevel::FAST, &reportToken);
+        checkRateLevel(sensor, directChannelHandle, ISensors::RateLevel::VERY_FAST, &reportToken);
+        checkRateLevel(sensor, directChannelHandle, ISensors::RateLevel::STOP, &reportToken);
+
+        // Verify that a sensor handle of -1 is only acceptable when using RateLevel::STOP
+        ndk::ScopedAStatus status = configDirectReport(-1 /* sensorHandle */, directChannelHandle,
+                                                       ISensors::RateLevel::NORMAL, &reportToken);
+        ASSERT_EQ(status.getServiceSpecificError(), android::BAD_VALUE);
+
+        status = configDirectReport(-1 /* sensorHandle */, directChannelHandle,
+                                    ISensors::RateLevel::STOP, &reportToken);
+        ASSERT_TRUE(status.isOk());
+    } else {
+        // directChannelHandle will be -1 here, HAL should either reject it as a bad value if there
+        // is some level of direct channel report, otherwise return INVALID_OPERATION if direct
+        // channel is not supported at all
+        int error = supportsAnyDirectChannel ? EX_ILLEGAL_ARGUMENT : EX_UNSUPPORTED_OPERATION;
+        ndk::ScopedAStatus status = configDirectReport(sensor.sensorHandle, directChannelHandle,
+                                                       ISensors::RateLevel::NORMAL, &reportToken);
+        ASSERT_EQ(status.getExceptionCode(), error);
+    }
+}
+
+TEST_P(SensorsAidlTest, DirectChannelAshmem) {
+    verifyDirectChannel(ISensors::SharedMemInfo::SharedMemType::ASHMEM);
+}
+
+TEST_P(SensorsAidlTest, DirectChannelGralloc) {
+    verifyDirectChannel(ISensors::SharedMemInfo::SharedMemType::GRALLOC);
+}
+
+GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(SensorsAidlTest);
+INSTANTIATE_TEST_SUITE_P(Sensors, SensorsAidlTest,
+                         testing::ValuesIn(android::getAidlHalInstanceNames(ISensors::descriptor)),
+                         android::PrintInstanceNameToString);
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    ProcessState::self()->setThreadPoolMaxThreadCount(1);
+    ProcessState::self()->startThreadPool();
+    return RUN_ALL_TESTS();
+}
diff --git a/sensors/common/default/2.X/multihal/HalProxy.cpp b/sensors/common/default/2.X/multihal/HalProxy.cpp
index f5fc066..73b0594 100644
--- a/sensors/common/default/2.X/multihal/HalProxy.cpp
+++ b/sensors/common/default/2.X/multihal/HalProxy.cpp
@@ -176,7 +176,13 @@
     std::unique_ptr<EventMessageQueueWrapperBase> queue =
             std::make_unique<EventMessageQueueWrapperV2_1>(eventQueue);
 
-    return initializeCommon(queue, wakeLockDescriptor, dynamicCallback);
+    // Create the Wake Lock FMQ from the wakeLockDescriptor. Reset the read/write positions.
+    auto hidlWakeLockQueue =
+            std::make_unique<WakeLockMessageQueue>(wakeLockDescriptor, true /* resetPointers */);
+    std::unique_ptr<WakeLockMessageQueueWrapperBase> wakeLockQueue =
+            std::make_unique<WakeLockMessageQueueWrapperHidl>(hidlWakeLockQueue);
+
+    return initializeCommon(queue, wakeLockQueue, dynamicCallback);
 }
 
 Return<Result> HalProxy::initialize(
@@ -192,12 +198,18 @@
     std::unique_ptr<EventMessageQueueWrapperBase> queue =
             std::make_unique<EventMessageQueueWrapperV1_0>(eventQueue);
 
-    return initializeCommon(queue, wakeLockDescriptor, dynamicCallback);
+    // Create the Wake Lock FMQ from the wakeLockDescriptor. Reset the read/write positions.
+    auto hidlWakeLockQueue =
+            std::make_unique<WakeLockMessageQueue>(wakeLockDescriptor, true /* resetPointers */);
+    std::unique_ptr<WakeLockMessageQueueWrapperBase> wakeLockQueue =
+            std::make_unique<WakeLockMessageQueueWrapperHidl>(hidlWakeLockQueue);
+
+    return initializeCommon(queue, wakeLockQueue, dynamicCallback);
 }
 
 Return<Result> HalProxy::initializeCommon(
         std::unique_ptr<EventMessageQueueWrapperBase>& eventQueue,
-        const ::android::hardware::MQDescriptorSync<uint32_t>& wakeLockDescriptor,
+        std::unique_ptr<WakeLockMessageQueueWrapperBase>& wakeLockQueue,
         const sp<ISensorsCallbackWrapperBase>& sensorsCallback) {
     Result result = Result::OK;
 
@@ -222,8 +234,7 @@
 
     // Create the Wake Lock FMQ that is used by the framework to communicate whenever WAKE_UP
     // events have been successfully read and handled by the framework.
-    mWakeLockQueue =
-            std::make_unique<WakeLockMessageQueue>(wakeLockDescriptor, true /* resetPointers */);
+    mWakeLockQueue = std::move(wakeLockQueue);
 
     if (mEventQueueFlag != nullptr) {
         EventFlag::deleteEventFlag(&mEventQueueFlag);
diff --git a/sensors/common/default/2.X/multihal/include/HalProxy.h b/sensors/common/default/2.X/multihal/include/HalProxy.h
index 35d7c8b..6174528 100644
--- a/sensors/common/default/2.X/multihal/include/HalProxy.h
+++ b/sensors/common/default/2.X/multihal/include/HalProxy.h
@@ -23,6 +23,7 @@
 #include "V2_0/ScopedWakelock.h"
 #include "V2_0/SubHal.h"
 #include "V2_1/SubHal.h"
+#include "WakeLockMessageQueueWrapper.h"
 #include "convertV2_1.h"
 
 #include <android/hardware/sensors/2.1/ISensors.h>
@@ -98,10 +99,9 @@
             const ::android::hardware::MQDescriptorSync<uint32_t>& wakeLockDescriptor,
             const sp<V2_0::ISensorsCallback>& sensorsCallback);
 
-    Return<Result> initializeCommon(
-            std::unique_ptr<EventMessageQueueWrapperBase>& eventQueue,
-            const ::android::hardware::MQDescriptorSync<uint32_t>& wakeLockDescriptor,
-            const sp<ISensorsCallbackWrapperBase>& sensorsCallback);
+    Return<Result> initializeCommon(std::unique_ptr<EventMessageQueueWrapperBase>& eventQueue,
+                                    std::unique_ptr<WakeLockMessageQueueWrapperBase>& wakeLockQueue,
+                                    const sp<ISensorsCallbackWrapperBase>& sensorsCallback);
 
     Return<Result> batch(int32_t sensorHandle, int64_t samplingPeriodNs,
                          int64_t maxReportLatencyNs);
@@ -141,6 +141,8 @@
 
     void decrementRefCountAndMaybeReleaseWakelock(size_t delta, int64_t timeoutStart = -1) override;
 
+    const std::map<int32_t, SensorInfo>& getSensors() { return mSensors; }
+
   private:
     using EventMessageQueueV2_1 = MessageQueue<V2_1::Event, kSynchronizedReadWrite>;
     using EventMessageQueueV2_0 = MessageQueue<V1_0::Event, kSynchronizedReadWrite>;
@@ -154,7 +156,7 @@
     /**
      * The Wake Lock FMQ that is read to determine when the framework has handled WAKE_UP events
      */
-    std::unique_ptr<WakeLockMessageQueue> mWakeLockQueue;
+    std::unique_ptr<WakeLockMessageQueueWrapperBase> mWakeLockQueue;
 
     /**
      * Event Flag to signal to the framework when sensor events are available to be read and to
diff --git a/sensors/common/utils/WakeLockMessageQueueWrapper.h b/sensors/common/utils/WakeLockMessageQueueWrapper.h
new file mode 100644
index 0000000..3a219cf
--- /dev/null
+++ b/sensors/common/utils/WakeLockMessageQueueWrapper.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "convertV2_1.h"
+
+#include <android/hardware/sensors/2.1/types.h>
+#include <fmq/MessageQueue.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+#include <log/log.h>
+
+#include <atomic>
+
+namespace android {
+namespace hardware {
+namespace sensors {
+namespace V2_1 {
+namespace implementation {
+
+class WakeLockMessageQueueWrapperBase {
+  public:
+    virtual ~WakeLockMessageQueueWrapperBase() {}
+
+    virtual std::atomic<uint32_t>* getEventFlagWord() = 0;
+    virtual bool readBlocking(uint32_t* events, size_t numToRead, uint32_t readNotification,
+                              uint32_t writeNotification, int64_t timeOutNanos,
+                              ::android::hardware::EventFlag* evFlag = nullptr) = 0;
+    virtual bool write(const uint32_t* wakeLock) = 0;
+};
+
+class WakeLockMessageQueueWrapperHidl : public WakeLockMessageQueueWrapperBase {
+  public:
+    WakeLockMessageQueueWrapperHidl(
+            std::unique_ptr<::android::hardware::MessageQueue<uint32_t, kSynchronizedReadWrite>>&
+                    queue)
+        : mQueue(std::move(queue)) {}
+
+    std::atomic<uint32_t>* getEventFlagWord() override { return mQueue->getEventFlagWord(); }
+
+    bool readBlocking(uint32_t* wakeLocks, size_t numToRead, uint32_t readNotification,
+                      uint32_t writeNotification, int64_t timeOutNanos,
+                      ::android::hardware::EventFlag* evFlag) override {
+        return mQueue->readBlocking(wakeLocks, numToRead, readNotification, writeNotification,
+                                    timeOutNanos, evFlag);
+    }
+
+    bool write(const uint32_t* wakeLock) override { return mQueue->write(wakeLock); }
+
+  private:
+    std::unique_ptr<::android::hardware::MessageQueue<uint32_t, kSynchronizedReadWrite>> mQueue;
+};
+
+}  // namespace implementation
+}  // namespace V2_1
+}  // namespace sensors
+}  // namespace hardware
+}  // namespace android
diff --git a/tv/tuner/1.0/default/Lnb.cpp b/tv/tuner/1.0/default/Lnb.cpp
index 6025339..c770e91 100644
--- a/tv/tuner/1.0/default/Lnb.cpp
+++ b/tv/tuner/1.0/default/Lnb.cpp
@@ -33,9 +33,10 @@
 
 Lnb::~Lnb() {}
 
-Return<Result> Lnb::setCallback(const sp<ILnbCallback>& /* callback */) {
+Return<Result> Lnb::setCallback(const sp<ILnbCallback>& callback) {
     ALOGV("%s", __FUNCTION__);
 
+    mCallback = callback;
     return Result::SUCCESS;
 }
 
@@ -57,9 +58,16 @@
     return Result::SUCCESS;
 }
 
-Return<Result> Lnb::sendDiseqcMessage(const hidl_vec<uint8_t>& /* diseqcMessage */) {
+Return<Result> Lnb::sendDiseqcMessage(const hidl_vec<uint8_t>& diseqcMessage) {
     ALOGV("%s", __FUNCTION__);
 
+    if (mCallback != nullptr) {
+        // The correct implementation should be to return the response from the
+        // device via onDiseqcMessage(). The below implementation is only to enable
+        // testing for LnbCallbacks.
+        ALOGV("[hidl] %s - this is for test purpose only, and must be replaced!", __FUNCTION__);
+        mCallback->onDiseqcMessage(diseqcMessage);
+    }
     return Result::SUCCESS;
 }
 
diff --git a/tv/tuner/1.0/default/Lnb.h b/tv/tuner/1.0/default/Lnb.h
index 1e97214..c14bbd8 100644
--- a/tv/tuner/1.0/default/Lnb.h
+++ b/tv/tuner/1.0/default/Lnb.h
@@ -57,6 +57,7 @@
   private:
     int mId;
     virtual ~Lnb();
+    sp<ILnbCallback> mCallback;
 };
 
 }  // namespace implementation
diff --git a/tv/tuner/1.0/vts/functional/FrontendTests.cpp b/tv/tuner/1.0/vts/functional/FrontendTests.cpp
old mode 100644
new mode 100755
index 4a642a0..acc524b
--- a/tv/tuner/1.0/vts/functional/FrontendTests.cpp
+++ b/tv/tuner/1.0/vts/functional/FrontendTests.cpp
@@ -377,6 +377,7 @@
         result &= getDvrTests()->getDvrPlaybackMQDescriptor() == success();
         getDvrTests()->startPlaybackInputThread(mDvrConfig.playbackInputFile,
                                                 mDvrConfig.settings.playback());
+        getDvrTests()->startDvrPlayback();
         if (!result) {
             ALOGW("[vts] Software frontend dvr configure failed.");
             return failure();
@@ -400,6 +401,7 @@
     status = mFrontend->stopTune();
     if (mIsSoftwareFe && testWithDemux) {
         getDvrTests()->stopPlaybackThread();
+        getDvrTests()->stopDvrPlayback();
         getDvrTests()->closeDvrPlayback();
     }
     return AssertionResult(status == Result::SUCCESS);
diff --git a/tv/tuner/1.1/default/Frontend.cpp b/tv/tuner/1.1/default/Frontend.cpp
index f5463a9..919c956 100644
--- a/tv/tuner/1.1/default/Frontend.cpp
+++ b/tv/tuner/1.1/default/Frontend.cpp
@@ -88,46 +88,60 @@
 
 Return<Result> Frontend::scan(const FrontendSettings& settings, FrontendScanType type) {
     ALOGV("%s", __FUNCTION__);
+
+    // If it's in middle of scanning, stop it first.
+    if (mScanThread.joinable()) {
+        mScanThread.join();
+    }
+
+    mFrontendSettings = settings;
+    mFrontendScanType = type;
+    mScanThread = std::thread(&Frontend::scanThreadLoop, this);
+
+    return Result::SUCCESS;
+}
+
+void Frontend::scanThreadLoop() {
     FrontendScanMessage msg;
 
     if (mIsLocked) {
         msg.isEnd(true);
         mCallback->onScanMessage(FrontendScanMessageType::END, msg);
-        return Result::SUCCESS;
+        return;
     }
 
     uint32_t frequency;
-    switch (settings.getDiscriminator()) {
+    switch (mFrontendSettings.getDiscriminator()) {
         case FrontendSettings::hidl_discriminator::analog:
-            frequency = settings.analog().frequency;
+            frequency = mFrontendSettings.analog().frequency;
             break;
         case FrontendSettings::hidl_discriminator::atsc:
-            frequency = settings.atsc().frequency;
+            frequency = mFrontendSettings.atsc().frequency;
             break;
         case FrontendSettings::hidl_discriminator::atsc3:
-            frequency = settings.atsc3().frequency;
+            frequency = mFrontendSettings.atsc3().frequency;
             break;
         case FrontendSettings::hidl_discriminator::dvbs:
-            frequency = settings.dvbs().frequency;
+            frequency = mFrontendSettings.dvbs().frequency;
             break;
         case FrontendSettings::hidl_discriminator::dvbc:
-            frequency = settings.dvbc().frequency;
+            frequency = mFrontendSettings.dvbc().frequency;
             break;
         case FrontendSettings::hidl_discriminator::dvbt:
-            frequency = settings.dvbt().frequency;
+            frequency = mFrontendSettings.dvbt().frequency;
             break;
         case FrontendSettings::hidl_discriminator::isdbs:
-            frequency = settings.isdbs().frequency;
+            frequency = mFrontendSettings.isdbs().frequency;
             break;
         case FrontendSettings::hidl_discriminator::isdbs3:
-            frequency = settings.isdbs3().frequency;
+            frequency = mFrontendSettings.isdbs3().frequency;
             break;
         case FrontendSettings::hidl_discriminator::isdbt:
-            frequency = settings.isdbt().frequency;
+            frequency = mFrontendSettings.isdbt().frequency;
             break;
     }
 
-    if (type == FrontendScanType::SCAN_BLIND) {
+    if (mFrontendScanType == FrontendScanType::SCAN_BLIND) {
         frequency += 100 * 1000;
     }
 
@@ -204,8 +218,6 @@
     msg.isLocked(true);
     mCallback->onScanMessage(FrontendScanMessageType::LOCKED, msg);
     mIsLocked = true;
-
-    return Result::SUCCESS;
 }
 
 Return<Result> Frontend::scan_1_1(const FrontendSettings& settings, FrontendScanType type,
@@ -218,6 +230,10 @@
 Return<Result> Frontend::stopScan() {
     ALOGV("%s", __FUNCTION__);
 
+    if (mScanThread.joinable()) {
+        mScanThread.join();
+    }
+
     mIsLocked = false;
     return Result::SUCCESS;
 }
diff --git a/tv/tuner/1.1/default/Frontend.h b/tv/tuner/1.1/default/Frontend.h
index a28fb64..bf739a8 100644
--- a/tv/tuner/1.1/default/Frontend.h
+++ b/tv/tuner/1.1/default/Frontend.h
@@ -20,6 +20,7 @@
 #include <android/hardware/tv/tuner/1.1/IFrontend.h>
 #include <fstream>
 #include <iostream>
+#include <thread>
 #include "Tuner.h"
 
 using namespace std;
@@ -81,13 +82,17 @@
   private:
     virtual ~Frontend();
     bool supportsSatellite();
+    void scanThreadLoop();
+
     sp<IFrontendCallback> mCallback;
     sp<Tuner> mTunerService;
     FrontendType mType = FrontendType::UNDEFINED;
     FrontendId mId = 0;
     bool mIsLocked = false;
     uint32_t mCiCamId;
-
+    std::thread mScanThread;
+    FrontendSettings mFrontendSettings;
+    FrontendScanType mFrontendScanType;
     std::ifstream mFrontendData;
 };
 
diff --git a/tv/tuner/1.1/default/Lnb.cpp b/tv/tuner/1.1/default/Lnb.cpp
index 044727f..5dd0147 100644
--- a/tv/tuner/1.1/default/Lnb.cpp
+++ b/tv/tuner/1.1/default/Lnb.cpp
@@ -33,9 +33,10 @@
 
 Lnb::~Lnb() {}
 
-Return<Result> Lnb::setCallback(const sp<ILnbCallback>& /* callback */) {
+Return<Result> Lnb::setCallback(const sp<ILnbCallback>& callback) {
     ALOGV("%s", __FUNCTION__);
 
+    mCallback = callback;
     return Result::SUCCESS;
 }
 
@@ -57,9 +58,16 @@
     return Result::SUCCESS;
 }
 
-Return<Result> Lnb::sendDiseqcMessage(const hidl_vec<uint8_t>& /* diseqcMessage */) {
+Return<Result> Lnb::sendDiseqcMessage(const hidl_vec<uint8_t>& diseqcMessage) {
     ALOGV("%s", __FUNCTION__);
 
+    if (mCallback != nullptr) {
+        // The correct implementation should be to return the response from the
+        // device via onDiseqcMessage(). The below implementation is only to enable
+        // testing for LnbCallbacks.
+        ALOGV("[hidl] %s - this is for test purpose only, and must be replaced!", __FUNCTION__);
+        mCallback->onDiseqcMessage(diseqcMessage);
+    }
     return Result::SUCCESS;
 }
 
diff --git a/tv/tuner/1.1/default/Lnb.h b/tv/tuner/1.1/default/Lnb.h
index 70a8e41..b34ca39 100644
--- a/tv/tuner/1.1/default/Lnb.h
+++ b/tv/tuner/1.1/default/Lnb.h
@@ -51,6 +51,7 @@
   private:
     int mId;
     virtual ~Lnb();
+    sp<ILnbCallback> mCallback;
 };
 
 }  // namespace implementation
diff --git a/tv/tuner/1.1/vts/functional/FrontendTests.cpp b/tv/tuner/1.1/vts/functional/FrontendTests.cpp
index a595a93..9f0f30d 100644
--- a/tv/tuner/1.1/vts/functional/FrontendTests.cpp
+++ b/tv/tuner/1.1/vts/functional/FrontendTests.cpp
@@ -444,6 +444,7 @@
         result &= getDvrTests()->getDvrPlaybackMQDescriptor() == success();
         getDvrTests()->startPlaybackInputThread(mDvrConfig.playbackInputFile,
                                                 mDvrConfig.settings.playback());
+        getDvrTests()->startDvrPlayback();
         if (!result) {
             ALOGW("[vts] Software frontend dvr configure failed.");
             return failure();
@@ -459,6 +460,7 @@
     status = mFrontend->stopTune();
     if (mIsSoftwareFe && testWithDemux) {
         getDvrTests()->stopPlaybackThread();
+        getDvrTests()->stopDvrPlayback();
         getDvrTests()->closeDvrPlayback();
     }
     return AssertionResult(status == Result::SUCCESS);
diff --git a/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/AudioStreamType.aidl b/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/AudioStreamType.aidl
index bfd2aa8..6c538ea 100644
--- a/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/AudioStreamType.aidl
+++ b/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/AudioStreamType.aidl
@@ -51,4 +51,8 @@
   OPUS = 13,
   VORBIS = 14,
   DRA = 15,
+  AAC_ADTS = 16,
+  AAC_LATM = 17,
+  AAC_HE_ADTS = 18,
+  AAC_HE_LATM = 19,
 }
diff --git a/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/DemuxFilterMediaEvent.aidl b/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/DemuxFilterMediaEvent.aidl
index 993c639..61a9555 100644
--- a/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/DemuxFilterMediaEvent.aidl
+++ b/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/DemuxFilterMediaEvent.aidl
@@ -48,4 +48,5 @@
   int mpuSequenceNumber;
   boolean isPesPrivateData;
   android.hardware.tv.tuner.DemuxFilterMediaEventExtraMetaData extraMetaData;
+  android.hardware.tv.tuner.DemuxFilterScIndexMask scIndexMask;
 }
diff --git a/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/DemuxFilterSectionSettings.aidl b/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/DemuxFilterSectionSettings.aidl
index 2858565..7936e59 100644
--- a/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/DemuxFilterSectionSettings.aidl
+++ b/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/DemuxFilterSectionSettings.aidl
@@ -39,4 +39,5 @@
   boolean isCheckCrc;
   boolean isRepeat;
   boolean isRaw;
+  int bitWidthOfLengthField;
 }
diff --git a/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/FrontendScanMessage.aidl b/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/FrontendScanMessage.aidl
index 2c6cc00..e763cfb 100644
--- a/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/FrontendScanMessage.aidl
+++ b/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/FrontendScanMessage.aidl
@@ -50,4 +50,5 @@
   android.hardware.tv.tuner.FrontendModulation modulation;
   android.hardware.tv.tuner.FrontendDvbcAnnex annex;
   boolean isHighPriority;
+  int[] dvbtCellIds;
 }
diff --git a/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/FrontendScanMessageType.aidl b/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/FrontendScanMessageType.aidl
index b121c85..6976ecd 100644
--- a/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/FrontendScanMessageType.aidl
+++ b/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/FrontendScanMessageType.aidl
@@ -50,4 +50,5 @@
   MODULATION = 12,
   DVBC_ANNEX = 13,
   HIGH_PRIORITY = 14,
+  DVBT_CELL_IDS = 15,
 }
diff --git a/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/FrontendStatus.aidl b/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/FrontendStatus.aidl
index c79b751..fc0efc9 100644
--- a/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/FrontendStatus.aidl
+++ b/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/FrontendStatus.aidl
@@ -75,4 +75,5 @@
   android.hardware.tv.tuner.FrontendIsdbtMode isdbtMode;
   android.hardware.tv.tuner.FrontendIsdbtPartialReceptionFlag partialReceptionFlag;
   int[] streamIdList;
+  int[] dvbtCellIds;
 }
diff --git a/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/FrontendStatusType.aidl b/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/FrontendStatusType.aidl
index 9ea3200..2cc62d5 100644
--- a/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/FrontendStatusType.aidl
+++ b/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/FrontendStatusType.aidl
@@ -75,4 +75,5 @@
   ISDBT_MODE = 37,
   ISDBT_PARTIAL_RECEPTION_FLAG = 38,
   STREAM_ID_LIST = 39,
+  DVBT_CELL_IDS = 40,
 }
diff --git a/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/IFrontend.aidl b/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/IFrontend.aidl
index ed5b0c0..e7aa070 100644
--- a/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/IFrontend.aidl
+++ b/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/IFrontend.aidl
@@ -43,7 +43,7 @@
   void stopScan();
   android.hardware.tv.tuner.FrontendStatus[] getStatus(in android.hardware.tv.tuner.FrontendStatusType[] statusTypes);
   void setLnb(in int lnbId);
-  void setLna(in boolean bEnable);
   int linkCiCam(in int ciCamId);
   void unlinkCiCam(in int ciCamId);
+  String getHardwareInfo();
 }
diff --git a/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/ITuner.aidl b/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/ITuner.aidl
index 0e903d8..0ff2da9 100644
--- a/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/ITuner.aidl
+++ b/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/ITuner.aidl
@@ -44,4 +44,7 @@
   int[] getLnbIds();
   android.hardware.tv.tuner.ILnb openLnbById(in int lnbId);
   android.hardware.tv.tuner.ILnb openLnbByName(in String lnbName, out int[] lnbId);
+  void setLna(in boolean bEnable);
+  void setMaxNumberOfFrontends(in android.hardware.tv.tuner.FrontendType frontendType, in int maxNumber);
+  int getMaxNumberOfFrontends(in android.hardware.tv.tuner.FrontendType frontendType);
 }
diff --git a/tv/tuner/aidl/android/hardware/tv/tuner/AudioStreamType.aidl b/tv/tuner/aidl/android/hardware/tv/tuner/AudioStreamType.aidl
index 1bb5c68f..9e9a8cf 100644
--- a/tv/tuner/aidl/android/hardware/tv/tuner/AudioStreamType.aidl
+++ b/tv/tuner/aidl/android/hardware/tv/tuner/AudioStreamType.aidl
@@ -99,4 +99,24 @@
      * SJ/T 11368-2006
      */
     DRA,
+
+    /*
+     * AAC with ADTS (Audio Data Transport Format).
+     */
+    AAC_ADTS,
+
+    /*
+     * AAC with ADTS with LATM (Low-overhead MPEG-4 Audio Transport Multiplex).
+     */
+    AAC_LATM,
+
+    /*
+     * High-Efficiency AAC (HE-AAC) with ADTS (Audio Data Transport Format).
+     */
+    AAC_HE_ADTS,
+
+    /*
+     * High-Efficiency AAC (HE-AAC) with LATM (Low-overhead MPEG-4 Audio Transport Multiplex).
+     */
+    AAC_HE_LATM,
 }
diff --git a/tv/tuner/aidl/android/hardware/tv/tuner/DemuxFilterMediaEvent.aidl b/tv/tuner/aidl/android/hardware/tv/tuner/DemuxFilterMediaEvent.aidl
index e92b711..32f0cb2 100644
--- a/tv/tuner/aidl/android/hardware/tv/tuner/DemuxFilterMediaEvent.aidl
+++ b/tv/tuner/aidl/android/hardware/tv/tuner/DemuxFilterMediaEvent.aidl
@@ -19,6 +19,7 @@
 import android.hardware.common.NativeHandle;
 
 import android.hardware.tv.tuner.DemuxFilterMediaEventExtraMetaData;
+import android.hardware.tv.tuner.DemuxFilterScIndexMask;
 
 /**
  * Filter Event for Audio or Video Filter.
@@ -84,4 +85,10 @@
     boolean isPesPrivateData;
 
     DemuxFilterMediaEventExtraMetaData extraMetaData;
+
+    /**
+     * DemuxFilterScIndexMask for the key frame info. It's optional to hardware which can only
+     * access unit framing at decode stage.
+     */
+    DemuxFilterScIndexMask scIndexMask;
 }
diff --git a/tv/tuner/aidl/android/hardware/tv/tuner/DemuxFilterSectionSettings.aidl b/tv/tuner/aidl/android/hardware/tv/tuner/DemuxFilterSectionSettings.aidl
index f6788ee..aa30175 100644
--- a/tv/tuner/aidl/android/hardware/tv/tuner/DemuxFilterSectionSettings.aidl
+++ b/tv/tuner/aidl/android/hardware/tv/tuner/DemuxFilterSectionSettings.aidl
@@ -19,7 +19,7 @@
 import android.hardware.tv.tuner.DemuxFilterSectionSettingsCondition;
 
 /**
- * Filter Settings for Section data according to ISO/IEC 13818-1.
+ * Filter Settings for Section data according to ISO/IEC 13818-1 and ISO/IEC 23008-1.
  * @hide
  */
 @VintfStability
@@ -49,4 +49,12 @@
      * true if the filter send onFilterStatus instead of onFilterEvent.
      */
     boolean isRaw;
+
+    /**
+     * The bit width of the MMTP (MPEG Media Transport Protocol) section message's length field
+     * according to ISO/IEC 23008-1.
+     *
+     * The filter uses this for CRC checking when isCheckCrc is true.
+     */
+    int bitWidthOfLengthField;
 }
diff --git a/tv/tuner/aidl/android/hardware/tv/tuner/FrontendScanMessage.aidl b/tv/tuner/aidl/android/hardware/tv/tuner/FrontendScanMessage.aidl
index 19c6766..a941066 100644
--- a/tv/tuner/aidl/android/hardware/tv/tuner/FrontendScanMessage.aidl
+++ b/tv/tuner/aidl/android/hardware/tv/tuner/FrontendScanMessage.aidl
@@ -70,4 +70,10 @@
     FrontendDvbcAnnex annex;
 
     boolean isHighPriority;
+
+    /**
+     * DVB-T Cell Ids.
+     */
+    int[] dvbtCellIds;
+
 }
diff --git a/tv/tuner/aidl/android/hardware/tv/tuner/FrontendScanMessageType.aidl b/tv/tuner/aidl/android/hardware/tv/tuner/FrontendScanMessageType.aidl
index 2b91216..f4d2ee0 100644
--- a/tv/tuner/aidl/android/hardware/tv/tuner/FrontendScanMessageType.aidl
+++ b/tv/tuner/aidl/android/hardware/tv/tuner/FrontendScanMessageType.aidl
@@ -86,4 +86,10 @@
     DVBC_ANNEX,
 
     HIGH_PRIORITY,
+
+    /**
+     * DVB-T CELL ID.
+     */
+    DVBT_CELL_IDS,
+
 }
diff --git a/tv/tuner/aidl/android/hardware/tv/tuner/FrontendStatus.aidl b/tv/tuner/aidl/android/hardware/tv/tuner/FrontendStatus.aidl
index 6e6f315..ae6e46f 100644
--- a/tv/tuner/aidl/android/hardware/tv/tuner/FrontendStatus.aidl
+++ b/tv/tuner/aidl/android/hardware/tv/tuner/FrontendStatus.aidl
@@ -236,4 +236,10 @@
      */
     int[] streamIdList;
 
+    /**
+     * DVB-T Cell Id.
+     */
+    int[] dvbtCellIds;
+
+
 }
diff --git a/tv/tuner/aidl/android/hardware/tv/tuner/FrontendStatusType.aidl b/tv/tuner/aidl/android/hardware/tv/tuner/FrontendStatusType.aidl
index 7feb72d..e7da517 100644
--- a/tv/tuner/aidl/android/hardware/tv/tuner/FrontendStatusType.aidl
+++ b/tv/tuner/aidl/android/hardware/tv/tuner/FrontendStatusType.aidl
@@ -223,4 +223,9 @@
      * Stream ID list included in a transponder.
      */
    STREAM_ID_LIST,
+
+   /**
+    * DVB-T Cell Id.
+    */
+   DVBT_CELL_IDS,
 }
diff --git a/tv/tuner/aidl/android/hardware/tv/tuner/IFrontend.aidl b/tv/tuner/aidl/android/hardware/tv/tuner/IFrontend.aidl
index b2717db..5b3ce39 100644
--- a/tv/tuner/aidl/android/hardware/tv/tuner/IFrontend.aidl
+++ b/tv/tuner/aidl/android/hardware/tv/tuner/IFrontend.aidl
@@ -117,13 +117,6 @@
     void setLnb(in int lnbId);
 
     /**
-     * Enable or Disable Low Noise Amplifier (LNA).
-     *
-     * @param bEnable true if activate LNA module; false if deactivate LNA
-     */
-    void setLna(in boolean bEnable);
-
-    /**
      * Link Conditional Access Modules (CAM) to Frontend support Common
      * Interface (CI) bypass mode.
      *
@@ -143,4 +136,14 @@
      * @param ciCamId specify CI-CAM Id to unlink.
      */
     void unlinkCiCam(in int ciCamId);
+
+    /**
+     * Request Hardware information about the frontend.
+     *
+     * The client may use this to collect vendor specific hardware information, e.g. RF
+     * chip version, Demod chip version, detailed status of dvbs blind scan, etc.
+     *
+     * @return the frontend hardware information.
+     */
+    String getHardwareInfo();
 }
diff --git a/tv/tuner/aidl/android/hardware/tv/tuner/ITuner.aidl b/tv/tuner/aidl/android/hardware/tv/tuner/ITuner.aidl
index ab8b0b8..03def33 100644
--- a/tv/tuner/aidl/android/hardware/tv/tuner/ITuner.aidl
+++ b/tv/tuner/aidl/android/hardware/tv/tuner/ITuner.aidl
@@ -18,6 +18,7 @@
 
 import android.hardware.tv.tuner.DemuxCapabilities;
 import android.hardware.tv.tuner.FrontendInfo;
+import android.hardware.tv.tuner.FrontendType;
 import android.hardware.tv.tuner.IDemux;
 import android.hardware.tv.tuner.IDescrambler;
 import android.hardware.tv.tuner.IFrontend;
@@ -120,4 +121,31 @@
      * @return the newly opened Lnb iterface.
      */
     ILnb openLnbByName(in String lnbName, out int[] lnbId);
+
+    /**
+     * Enable or Disable Low Noise Amplifier (LNA).
+     *
+     * @param bEnable true if activate LNA module; false if deactivate LNA
+     */
+    void setLna(in boolean bEnable);
+
+    /**
+     * Set the maximum usable frontends number of a given frontend type.
+     *
+     * It is used by the client to enable or disable frontends when cable connection status
+     * is changed by user.
+     *
+     * @param frontendType the frontend type which the maximum usable number will be set.
+     * @param maxNumber the new maximum usable number.
+     */
+    void setMaxNumberOfFrontends(in FrontendType frontendType, in int maxNumber);
+
+    /**
+     * Get the maximum usable frontends number of a given frontend type.
+     *
+     * @param frontendType the frontend type which the maximum usable number will be queried.
+     *
+     * @return the maximum usable number of the queried frontend type.
+     */
+    int getMaxNumberOfFrontends(in FrontendType frontendType);
 }
diff --git a/tv/tuner/aidl/default/Frontend.cpp b/tv/tuner/aidl/default/Frontend.cpp
index a4dde2a..714612d 100644
--- a/tv/tuner/aidl/default/Frontend.cpp
+++ b/tv/tuner/aidl/default/Frontend.cpp
@@ -87,47 +87,60 @@
 ::ndk::ScopedAStatus Frontend::scan(const FrontendSettings& in_settings, FrontendScanType in_type) {
     ALOGV("%s", __FUNCTION__);
 
+    // If it's in middle of scanning, stop it first.
+    if (mScanThread.joinable()) {
+        mScanThread.join();
+    }
+
+    mFrontendSettings = in_settings;
+    mFrontendScanType = in_type;
+    mScanThread = std::thread(&Frontend::scanThreadLoop, this);
+
+    return ::ndk::ScopedAStatus::ok();
+}
+
+void Frontend::scanThreadLoop() {
     if (mIsLocked) {
         FrontendScanMessage msg;
         msg.set<FrontendScanMessage::Tag::isEnd>(true);
         mCallback->onScanMessage(FrontendScanMessageType::END, msg);
-        return ::ndk::ScopedAStatus::ok();
+        return;
     }
 
     int64_t frequency = 0;
-    switch (in_settings.getTag()) {
+    switch (mFrontendSettings.getTag()) {
         case FrontendSettings::Tag::analog:
-            frequency = in_settings.get<FrontendSettings::Tag::analog>().frequency;
+            frequency = mFrontendSettings.get<FrontendSettings::Tag::analog>().frequency;
             break;
         case FrontendSettings::Tag::atsc:
-            frequency = in_settings.get<FrontendSettings::Tag::atsc>().frequency;
+            frequency = mFrontendSettings.get<FrontendSettings::Tag::atsc>().frequency;
             break;
         case FrontendSettings::Tag::atsc3:
-            frequency = in_settings.get<FrontendSettings::Tag::atsc3>().frequency;
+            frequency = mFrontendSettings.get<FrontendSettings::Tag::atsc3>().frequency;
             break;
         case FrontendSettings::Tag::dvbs:
-            frequency = in_settings.get<FrontendSettings::Tag::dvbs>().frequency;
+            frequency = mFrontendSettings.get<FrontendSettings::Tag::dvbs>().frequency;
             break;
         case FrontendSettings::Tag::dvbc:
-            frequency = in_settings.get<FrontendSettings::Tag::dvbc>().frequency;
+            frequency = mFrontendSettings.get<FrontendSettings::Tag::dvbc>().frequency;
             break;
         case FrontendSettings::Tag::dvbt:
-            frequency = in_settings.get<FrontendSettings::Tag::dvbt>().frequency;
+            frequency = mFrontendSettings.get<FrontendSettings::Tag::dvbt>().frequency;
             break;
         case FrontendSettings::Tag::isdbs:
-            frequency = in_settings.get<FrontendSettings::Tag::isdbs>().frequency;
+            frequency = mFrontendSettings.get<FrontendSettings::Tag::isdbs>().frequency;
             break;
         case FrontendSettings::Tag::isdbs3:
-            frequency = in_settings.get<FrontendSettings::Tag::isdbs3>().frequency;
+            frequency = mFrontendSettings.get<FrontendSettings::Tag::isdbs3>().frequency;
             break;
         case FrontendSettings::Tag::isdbt:
-            frequency = in_settings.get<FrontendSettings::Tag::isdbt>().frequency;
+            frequency = mFrontendSettings.get<FrontendSettings::Tag::isdbt>().frequency;
             break;
         default:
             break;
     }
 
-    if (in_type == FrontendScanType::SCAN_BLIND) {
+    if (mFrontendScanType == FrontendScanType::SCAN_BLIND) {
         frequency += 100 * 1000;
     }
 
@@ -237,19 +250,28 @@
         mCallback->onScanMessage(FrontendScanMessageType::HIGH_PRIORITY, msg);
     }
 
+    if (mType == FrontendType::DVBT) {
+        FrontendScanMessage msg;
+        vector<int32_t> dvbtCellIds = {0, 1};
+        msg.set<FrontendScanMessage::Tag::dvbtCellIds>(dvbtCellIds);
+        mCallback->onScanMessage(FrontendScanMessageType::DVBT_CELL_IDS, msg);
+    }
+
     {
         FrontendScanMessage msg;
         msg.set<FrontendScanMessage::Tag::isLocked>(true);
         mCallback->onScanMessage(FrontendScanMessageType::LOCKED, msg);
         mIsLocked = true;
     }
-
-    return ::ndk::ScopedAStatus::ok();
 }
 
 ::ndk::ScopedAStatus Frontend::stopScan() {
     ALOGV("%s", __FUNCTION__);
 
+    if (mScanThread.joinable()) {
+        mScanThread.join();
+    }
+
     mIsLocked = false;
     return ::ndk::ScopedAStatus::ok();
 }
@@ -681,6 +703,11 @@
                 status.set<FrontendStatus::streamIdList>(streamIds);
                 break;
             }
+            case FrontendStatusType::DVBT_CELL_IDS: {
+                vector<int32_t> dvbtCellIds = {0, 1};
+                status.set<FrontendStatus::dvbtCellIds>(dvbtCellIds);
+                break;
+            }
             default: {
                 continue;
             }
@@ -691,12 +718,6 @@
     return ::ndk::ScopedAStatus::ok();
 }
 
-::ndk::ScopedAStatus Frontend::setLna(bool /* in_bEnable */) {
-    ALOGV("%s", __FUNCTION__);
-
-    return ::ndk::ScopedAStatus::ok();
-}
-
 ::ndk::ScopedAStatus Frontend::setLnb(int32_t /* in_lnbId */) {
     ALOGV("%s", __FUNCTION__);
     if (!supportsSatellite()) {
@@ -731,6 +752,13 @@
     return STATUS_OK;
 }
 
+::ndk::ScopedAStatus Frontend::getHardwareInfo(std::string* _aidl_return) {
+    ALOGV("%s", __FUNCTION__);
+
+    *_aidl_return = "Sample Frontend";
+    return ::ndk::ScopedAStatus::ok();
+}
+
 FrontendType Frontend::getFrontendType() {
     return mType;
 }
diff --git a/tv/tuner/aidl/default/Frontend.h b/tv/tuner/aidl/default/Frontend.h
index 5e7b10c..fdedf1e 100644
--- a/tv/tuner/aidl/default/Frontend.h
+++ b/tv/tuner/aidl/default/Frontend.h
@@ -19,6 +19,7 @@
 #include <aidl/android/hardware/tv/tuner/BnFrontend.h>
 #include <fstream>
 #include <iostream>
+#include <thread>
 #include "Tuner.h"
 
 using namespace std;
@@ -46,9 +47,9 @@
     ::ndk::ScopedAStatus getStatus(const std::vector<FrontendStatusType>& in_statusTypes,
                                    std::vector<FrontendStatus>* _aidl_return) override;
     ::ndk::ScopedAStatus setLnb(int32_t in_lnbId) override;
-    ::ndk::ScopedAStatus setLna(bool in_bEnable) override;
     ::ndk::ScopedAStatus linkCiCam(int32_t in_ciCamId, int32_t* _aidl_return) override;
     ::ndk::ScopedAStatus unlinkCiCam(int32_t in_ciCamId) override;
+    ::ndk::ScopedAStatus getHardwareInfo(std::string* _aidl_return) override;
 
     binder_status_t dump(int fd, const char** args, uint32_t numArgs) override;
 
@@ -60,13 +61,17 @@
   private:
     virtual ~Frontend();
     bool supportsSatellite();
+    void scanThreadLoop();
+
     std::shared_ptr<IFrontendCallback> mCallback;
     std::shared_ptr<Tuner> mTuner;
     FrontendType mType = FrontendType::UNDEFINED;
     int32_t mId = 0;
     bool mIsLocked = false;
     int32_t mCiCamId;
-
+    std::thread mScanThread;
+    FrontendSettings mFrontendSettings;
+    FrontendScanType mFrontendScanType;
     std::ifstream mFrontendData;
 };
 
diff --git a/tv/tuner/aidl/default/Lnb.cpp b/tv/tuner/aidl/default/Lnb.cpp
index 35d2da6..f9343ae 100644
--- a/tv/tuner/aidl/default/Lnb.cpp
+++ b/tv/tuner/aidl/default/Lnb.cpp
@@ -34,9 +34,11 @@
 
 Lnb::~Lnb() {}
 
-::ndk::ScopedAStatus Lnb::setCallback(const std::shared_ptr<ILnbCallback>& /* in_callback */) {
+::ndk::ScopedAStatus Lnb::setCallback(const std::shared_ptr<ILnbCallback>& in_callback) {
     ALOGV("%s", __FUNCTION__);
 
+    mCallback = in_callback;
+
     return ::ndk::ScopedAStatus::ok();
 }
 
@@ -58,9 +60,17 @@
     return ::ndk::ScopedAStatus::ok();
 }
 
-::ndk::ScopedAStatus Lnb::sendDiseqcMessage(const std::vector<uint8_t>& /* in_diseqcMessage */) {
+::ndk::ScopedAStatus Lnb::sendDiseqcMessage(const std::vector<uint8_t>& in_diseqcMessage) {
     ALOGV("%s", __FUNCTION__);
 
+    if (mCallback != nullptr) {
+        // The correct implementation should be to return the response from the
+        // device via onDiseqcMessage(). The below implementation is only to enable
+        // testing for LnbCallbacks.
+        ALOGV("[aidl] %s - this is for test purpose only, and must be replaced!", __FUNCTION__);
+        mCallback->onDiseqcMessage(in_diseqcMessage);
+    }
+
     return ::ndk::ScopedAStatus::ok();
 }
 
diff --git a/tv/tuner/aidl/default/Lnb.h b/tv/tuner/aidl/default/Lnb.h
index bfe3097..464f9a4 100644
--- a/tv/tuner/aidl/default/Lnb.h
+++ b/tv/tuner/aidl/default/Lnb.h
@@ -44,6 +44,7 @@
   private:
     int mId;
     virtual ~Lnb();
+    std::shared_ptr<ILnbCallback> mCallback;
 };
 
 }  // namespace tuner
diff --git a/tv/tuner/aidl/default/Tuner.cpp b/tv/tuner/aidl/default/Tuner.cpp
index 96e83bb..48c1b66 100644
--- a/tv/tuner/aidl/default/Tuner.cpp
+++ b/tv/tuner/aidl/default/Tuner.cpp
@@ -64,6 +64,7 @@
             FrontendStatusType::STREAM_ID_LIST,
     };
     mFrontendStatusCaps[0] = statusCaps;
+    mMaxUsableFrontends[FrontendType::ISDBS] = 1;
 
     FrontendCapabilities capsAtsc3;
     capsAtsc3.set<FrontendCapabilities::Tag::atsc3Caps>(FrontendAtsc3Capabilities());
@@ -78,6 +79,7 @@
             FrontendStatusType::BANDWIDTH,
     };
     mFrontendStatusCaps[1] = statusCaps;
+    mMaxUsableFrontends[FrontendType::ATSC3] = 1;
 
     FrontendCapabilities capsDvbc;
     capsDvbc.set<FrontendCapabilities::Tag::dvbcCaps>(FrontendDvbcCapabilities());
@@ -89,6 +91,7 @@
             FrontendStatusType::INTERLEAVINGS, FrontendStatusType::BANDWIDTH,
     };
     mFrontendStatusCaps[2] = statusCaps;
+    mMaxUsableFrontends[FrontendType::DVBC] = 1;
 
     FrontendCapabilities capsDvbs;
     capsDvbs.set<FrontendCapabilities::Tag::dvbsCaps>(FrontendDvbsCapabilities());
@@ -99,6 +102,7 @@
             FrontendStatusType::ROLL_OFF,        FrontendStatusType::IS_MISO,
     };
     mFrontendStatusCaps[3] = statusCaps;
+    mMaxUsableFrontends[FrontendType::DVBS] = 1;
 
     FrontendCapabilities capsDvbt;
     capsDvbt.set<FrontendCapabilities::Tag::dvbtCaps>(FrontendDvbtCapabilities());
@@ -112,8 +116,10 @@
             FrontendStatusType::GUARD_INTERVAL,
             FrontendStatusType::TRANSMISSION_MODE,
             FrontendStatusType::T2_SYSTEM_ID,
+            FrontendStatusType::DVBT_CELL_IDS,
     };
     mFrontendStatusCaps[4] = statusCaps;
+    mMaxUsableFrontends[FrontendType::DVBT] = 1;
 
     FrontendCapabilities capsIsdbt;
     FrontendIsdbtCapabilities isdbtCaps{
@@ -144,6 +150,7 @@
             FrontendStatusType::INTERLEAVINGS,
     };
     mFrontendStatusCaps[5] = statusCaps;
+    mMaxUsableFrontends[FrontendType::ISDBT] = 1;
 
     FrontendCapabilities capsAnalog;
     capsAnalog.set<FrontendCapabilities::Tag::analogCaps>(FrontendAnalogCapabilities());
@@ -155,6 +162,7 @@
             FrontendStatusType::TS_DATA_RATES,
     };
     mFrontendStatusCaps[6] = statusCaps;
+    mMaxUsableFrontends[FrontendType::ANALOG] = 1;
 
     FrontendCapabilities capsAtsc;
     capsAtsc.set<FrontendCapabilities::Tag::atscCaps>(FrontendAtscCapabilities());
@@ -166,6 +174,7 @@
             FrontendStatusType::IS_LINEAR,
     };
     mFrontendStatusCaps[7] = statusCaps;
+    mMaxUsableFrontends[FrontendType::ATSC] = 1;
 
     FrontendCapabilities capsIsdbs3;
     capsIsdbs3.set<FrontendCapabilities::Tag::isdbs3Caps>(FrontendIsdbs3Capabilities());
@@ -176,6 +185,7 @@
             FrontendStatusType::IS_SHORT_FRAMES, FrontendStatusType::STREAM_ID_LIST,
     };
     mFrontendStatusCaps[8] = statusCaps;
+    mMaxUsableFrontends[FrontendType::ISDBS3] = 1;
 
     FrontendCapabilities capsDtmb;
     capsDtmb.set<FrontendCapabilities::Tag::dtmbCaps>(FrontendDtmbCapabilities());
@@ -186,6 +196,7 @@
             FrontendStatusType::TRANSMISSION_MODE,
     };
     mFrontendStatusCaps[9] = statusCaps;
+    mMaxUsableFrontends[FrontendType::DTMB] = 1;
 
     mLnbs.resize(2);
     mLnbs[0] = ndk::SharedRefBase::make<Lnb>(0);
@@ -317,6 +328,31 @@
     return ::ndk::ScopedAStatus::ok();
 }
 
+::ndk::ScopedAStatus Tuner::setLna(bool /* in_bEnable */) {
+    ALOGV("%s", __FUNCTION__);
+
+    return ::ndk::ScopedAStatus::ok();
+}
+
+::ndk::ScopedAStatus Tuner::setMaxNumberOfFrontends(FrontendType in_frontendType,
+                                                    int32_t in_maxNumber) {
+    ALOGV("%s", __FUNCTION__);
+
+    // In the default implementation, every type only has one frontend.
+    if (in_maxNumber < 0 || in_maxNumber > 1) {
+        return ::ndk::ScopedAStatus::fromServiceSpecificError(
+                static_cast<int32_t>(Result::INVALID_ARGUMENT));
+    }
+    mMaxUsableFrontends[in_frontendType] = in_maxNumber;
+    return ::ndk::ScopedAStatus::ok();
+}
+
+::ndk::ScopedAStatus Tuner::getMaxNumberOfFrontends(FrontendType in_frontendType,
+                                                    int32_t* _aidl_return) {
+    *_aidl_return = mMaxUsableFrontends[in_frontendType];
+    return ::ndk::ScopedAStatus::ok();
+}
+
 binder_status_t Tuner::dump(int fd, const char** args, uint32_t numArgs) {
     ALOGV("%s", __FUNCTION__);
     {
diff --git a/tv/tuner/aidl/default/Tuner.h b/tv/tuner/aidl/default/Tuner.h
index 682496c..216a2b6 100644
--- a/tv/tuner/aidl/default/Tuner.h
+++ b/tv/tuner/aidl/default/Tuner.h
@@ -56,6 +56,11 @@
     ::ndk::ScopedAStatus openLnbByName(const std::string& in_lnbName,
                                        std::vector<int32_t>* out_lnbId,
                                        std::shared_ptr<ILnb>* _aidl_return) override;
+    ::ndk::ScopedAStatus setLna(bool in_bEnable) override;
+    ::ndk::ScopedAStatus setMaxNumberOfFrontends(FrontendType in_frontendType,
+                                                 int32_t in_maxNumber) override;
+    ::ndk::ScopedAStatus getMaxNumberOfFrontends(FrontendType in_frontendType,
+                                                 int32_t* _aidl_return) override;
 
     binder_status_t dump(int fd, const char** args, uint32_t numArgs) override;
 
@@ -80,6 +85,7 @@
     // First used id will be 0.
     int32_t mLastUsedId = -1;
     vector<std::shared_ptr<Lnb>> mLnbs;
+    map<FrontendType, int32_t> mMaxUsableFrontends;
 };
 
 }  // namespace tuner
diff --git a/tv/tuner/aidl/vts/functional/FrontendTests.cpp b/tv/tuner/aidl/vts/functional/FrontendTests.cpp
index 12b1f33..41e98ea 100644
--- a/tv/tuner/aidl/vts/functional/FrontendTests.cpp
+++ b/tv/tuner/aidl/vts/functional/FrontendTests.cpp
@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+#include <aidl/android/hardware/tv/tuner/Result.h>
+
 #include "FrontendTests.h"
 
 ndk::ScopedAStatus FrontendCallback::onEvent(FrontendEventType frontendEventType) {
@@ -405,6 +407,13 @@
                         expectStatuses[i].get<FrontendStatus::Tag::streamIdList>().begin()));
                 break;
             }
+            case FrontendStatusType::DVBT_CELL_IDS: {
+                ASSERT_TRUE(std::equal(
+                        realStatuses[i].get<FrontendStatus::Tag::dvbtCellIds>().begin(),
+                        realStatuses[i].get<FrontendStatus::Tag::dvbtCellIds>().end(),
+                        expectStatuses[i].get<FrontendStatus::Tag::dvbtCellIds>().begin()));
+                break;
+            }
             default: {
                 continue;
             }
@@ -437,6 +446,7 @@
         getDvrTests()->startPlaybackInputThread(
                 mDvrConfig.playbackInputFile,
                 mDvrConfig.settings.get<DvrSettings::Tag::playback>());
+        getDvrTests()->startDvrPlayback();
     }
     mFrontendCallback->tuneTestOnLock(mFrontend, config.settings);
     return AssertionResult(true);
@@ -448,6 +458,7 @@
     status = mFrontend->stopTune();
     if (mIsSoftwareFe && testWithDemux) {
         getDvrTests()->stopPlaybackThread();
+        getDvrTests()->stopDvrPlayback();
         getDvrTests()->closeDvrPlayback();
     }
     return AssertionResult(status.isOk());
@@ -475,6 +486,13 @@
     feId = INVALID_ID;
 }
 
+AssertionResult FrontendTests::verifyHardwareInfo() {
+    EXPECT_TRUE(mFrontend) << "Test with openFrontendById first.";
+    std::string info;
+    ndk::ScopedAStatus status = mFrontend->getHardwareInfo(&info);
+    return AssertionResult(status.isOk() && !info.empty());
+}
+
 void FrontendTests::tuneTest(FrontendConfig frontendConf) {
     int32_t feId;
     getFrontendIdByType(frontendConf.type, feId);
@@ -491,6 +509,53 @@
     ASSERT_TRUE(closeFrontend());
 }
 
+void FrontendTests::debugInfoTest(FrontendConfig frontendConf) {
+    int32_t feId;
+    getFrontendIdByType(frontendConf.type, feId);
+    ASSERT_TRUE(feId != INVALID_ID);
+    ASSERT_TRUE(openFrontendById(feId));
+    ASSERT_TRUE(setFrontendCallback());
+    ASSERT_TRUE(tuneFrontend(frontendConf, false /*testWithDemux*/));
+    ASSERT_TRUE(verifyHardwareInfo());
+    ASSERT_TRUE(stopTuneFrontend(false /*testWithDemux*/));
+    ASSERT_TRUE(closeFrontend());
+}
+
+void FrontendTests::maxNumberOfFrontendsTest() {
+    ASSERT_TRUE(getFrontendIds());
+    for (size_t i = 0; i < mFeIds.size(); i++) {
+        ASSERT_TRUE(getFrontendInfo(mFeIds[i]));
+        int32_t defaultMax = -1;
+        ndk::ScopedAStatus status;
+        // Check default value
+        status = mService->getMaxNumberOfFrontends(mFrontendInfo.type, &defaultMax);
+        ASSERT_TRUE(status.isOk());
+        ASSERT_TRUE(defaultMax > 0);
+        // Set to -1
+        status = mService->setMaxNumberOfFrontends(mFrontendInfo.type, -1);
+        ASSERT_TRUE(status.getServiceSpecificError() ==
+                    static_cast<int32_t>(Result::INVALID_ARGUMENT));
+        // Set to defaultMax + 1
+        status = mService->setMaxNumberOfFrontends(mFrontendInfo.type, defaultMax + 1);
+        ASSERT_TRUE(status.getServiceSpecificError() ==
+                    static_cast<int32_t>(Result::INVALID_ARGUMENT));
+        // Set to 0
+        status = mService->setMaxNumberOfFrontends(mFrontendInfo.type, 0);
+        ASSERT_TRUE(status.isOk());
+        // Check after set
+        int32_t currentMax = -1;
+        status = mService->getMaxNumberOfFrontends(mFrontendInfo.type, &currentMax);
+        ASSERT_TRUE(status.isOk());
+        ASSERT_TRUE(currentMax == 0);
+        // Reset to default
+        status = mService->setMaxNumberOfFrontends(mFrontendInfo.type, defaultMax);
+        ASSERT_TRUE(status.isOk());
+        status = mService->getMaxNumberOfFrontends(mFrontendInfo.type, &currentMax);
+        ASSERT_TRUE(status.isOk());
+        ASSERT_TRUE(defaultMax == currentMax);
+    }
+}
+
 void FrontendTests::scanTest(FrontendConfig frontendConf, FrontendScanType scanType) {
     int32_t feId;
     getFrontendIdByType(frontendConf.type, feId);
diff --git a/tv/tuner/aidl/vts/functional/FrontendTests.h b/tv/tuner/aidl/vts/functional/FrontendTests.h
index e5a9cd3..1745f76 100644
--- a/tv/tuner/aidl/vts/functional/FrontendTests.h
+++ b/tv/tuner/aidl/vts/functional/FrontendTests.h
@@ -94,10 +94,13 @@
 
     AssertionResult linkCiCam(int32_t ciCamId);
     AssertionResult unlinkCiCam(int32_t ciCamId);
+    AssertionResult verifyHardwareInfo();
 
     void getFrontendIdByType(FrontendType feType, int32_t& feId);
     void tuneTest(FrontendConfig frontendConf);
     void scanTest(FrontendConfig frontend, FrontendScanType type);
+    void debugInfoTest(FrontendConfig frontendConf);
+    void maxNumberOfFrontendsTest();
 
     void setDvrTests(DvrTests* dvrTests) { mExternalDvrTests = dvrTests; }
     void setDemux(std::shared_ptr<IDemux> demux) { getDvrTests()->setDemux(demux); }
diff --git a/tv/tuner/aidl/vts/functional/VtsHalTvTunerTargetTest.cpp b/tv/tuner/aidl/vts/functional/VtsHalTvTunerTargetTest.cpp
index 89e42df..0566089 100644
--- a/tv/tuner/aidl/vts/functional/VtsHalTvTunerTargetTest.cpp
+++ b/tv/tuner/aidl/vts/functional/VtsHalTvTunerTargetTest.cpp
@@ -704,6 +704,9 @@
     bool mediaFilter = isMediaFilter(filterConf);
     auto filter = mFilterTests.getFilterById(filterId);
 
+    // startTime needs to be set before calling setDelayHint.
+    auto startTime = std::chrono::steady_clock::now();
+
     auto timeDelayInMs = std::chrono::milliseconds(filterConf.timeDelayInMs);
     if (timeDelayInMs.count() > 0) {
         FilterDelayHint delayHint;
@@ -724,15 +727,22 @@
         ASSERT_EQ(filter->setDelayHint(delayHint).isOk(), !mediaFilter);
     }
 
-    // start and stop filter in order to circumvent callback scheduler race
-    // conditions after adjusting filter delays.
+    // start and stop filter (and wait for first callback) in order to
+    // circumvent callback scheduler race conditions after adjusting filter
+    // delays.
+    auto cb = mFilterTests.getFilterCallbacks().at(filterId);
+    auto future =
+            cb->verifyFilterCallback([](const std::vector<DemuxFilterEvent>&) { return true; });
     mFilterTests.startFilter(filterId);
+
+    auto timeout = std::chrono::seconds(30);
+    ASSERT_EQ(future.wait_for(timeout), std::future_status::ready);
+
     mFilterTests.stopFilter(filterId);
 
     if (!mediaFilter) {
-        auto cb = mFilterTests.getFilterCallbacks().at(filterId);
         int callbackSize = 0;
-        auto future = cb->verifyFilterCallback(
+        future = cb->verifyFilterCallback(
                 [&callbackSize](const std::vector<DemuxFilterEvent>& events) {
                     for (const auto& event : events) {
                         callbackSize += getDemuxFilterEventDataLength(event);
@@ -744,11 +754,9 @@
         // hint beforehand.
         ASSERT_TRUE(mFilterTests.configFilter(filterConf.settings, filterId));
 
-        auto startTime = std::chrono::steady_clock::now();
         ASSERT_TRUE(mFilterTests.startFilter(filterId));
 
         // block and wait for callback to be received.
-        auto timeout = std::chrono::seconds(30);
         ASSERT_EQ(future.wait_for(timeout), std::future_status::ready);
         auto duration = std::chrono::steady_clock::now() - startTime;
 
@@ -883,6 +891,22 @@
     mFrontendTests.tuneTest(frontendMap[live.frontendId]);
 }
 
+TEST_P(TunerFrontendAidlTest, getHardwareInfo) {
+    description("Test Frontend get hardware info");
+    if (!live.hasFrontendConnection) {
+        return;
+    }
+    mFrontendTests.debugInfoTest(frontendMap[live.frontendId]);
+}
+
+TEST_P(TunerFrontendAidlTest, maxNumberOfFrontends) {
+    description("Test Max Frontend number");
+    if (!live.hasFrontendConnection) {
+        return;
+    }
+    mFrontendTests.maxNumberOfFrontendsTest();
+}
+
 TEST_P(TunerBroadcastAidlTest, BroadcastDataFlowVideoFilterTest) {
     description("Test Video Filter functionality in Broadcast use case.");
     if (!live.hasFrontendConnection) {
diff --git a/tv/tuner/config/TunerTestingConfigAidlReaderV1_0.h b/tv/tuner/config/TunerTestingConfigAidlReaderV1_0.h
index b6cc5f8..b73d594 100644
--- a/tv/tuner/config/TunerTestingConfigAidlReaderV1_0.h
+++ b/tv/tuner/config/TunerTestingConfigAidlReaderV1_0.h
@@ -954,6 +954,7 @@
         settings.isCheckCrc = section->getIsCheckCrc();
         settings.isRepeat = section->getIsRepeat();
         settings.isRaw = section->getIsRaw();
+        settings.bitWidthOfLengthField = section->getBitWidthOfLengthField();
         return settings;
     }
 
diff --git a/tv/tuner/config/api/current.txt b/tv/tuner/config/api/current.txt
index db1d076..4d519d7 100644
--- a/tv/tuner/config/api/current.txt
+++ b/tv/tuner/config/api/current.txt
@@ -477,9 +477,11 @@
 
   public class SectionFilterSettings {
     ctor public SectionFilterSettings();
+    method @Nullable public java.math.BigInteger getBitWidthOfLengthField();
     method @Nullable public boolean getIsCheckCrc();
     method @Nullable public boolean getIsRaw();
     method @Nullable public boolean getIsRepeat();
+    method public void setBitWidthOfLengthField(@Nullable java.math.BigInteger);
     method public void setIsCheckCrc(@Nullable boolean);
     method public void setIsRaw(@Nullable boolean);
     method public void setIsRepeat(@Nullable boolean);
diff --git a/tv/tuner/config/tuner_testing_dynamic_configuration.xsd b/tv/tuner/config/tuner_testing_dynamic_configuration.xsd
index 54cedfc..94f108b 100644
--- a/tv/tuner/config/tuner_testing_dynamic_configuration.xsd
+++ b/tv/tuner/config/tuner_testing_dynamic_configuration.xsd
@@ -226,6 +226,7 @@
         <xs:attribute name="isCheckCrc" type="xs:boolean" use="required"/>
         <xs:attribute name="isRepeat" type="xs:boolean" use="required"/>
         <xs:attribute name="isRaw" type="xs:boolean" use="required"/>
+        <xs:attribute name="bitWidthOfLengthField" type="xs:nonNegativeInteger" use="required"/>
     </xs:complexType>
     <xs:complexType name="recordFilterSettings">
         <xs:attribute name="tsIndexMask" type="tsIndexMask" use="required"/>
diff --git a/usb/gadget/1.1/default/lib/UsbGadgetUtils.cpp b/usb/gadget/1.1/default/lib/UsbGadgetUtils.cpp
index 8402853..4c40bf8 100644
--- a/usb/gadget/1.1/default/lib/UsbGadgetUtils.cpp
+++ b/usb/gadget/1.1/default/lib/UsbGadgetUtils.cpp
@@ -178,6 +178,9 @@
 
 Status addAdb(MonitorFfs* monitorFfs, int* functionCount) {
     ALOGI("setCurrentUsbFunctions Adb");
+    if (!WriteStringToFile("1", DESC_USE_PATH))
+        return Status::ERROR;
+
     if (!monitorFfs->addInotifyFd("/dev/usb-ffs/adb/")) return Status::ERROR;
 
     if (linkFunction("ffs.adb", (*functionCount)++)) return Status::ERROR;
diff --git a/usb/gadget/1.2/default/lib/UsbGadgetUtils.cpp b/usb/gadget/1.2/default/lib/UsbGadgetUtils.cpp
index 8986556..fa50821 100644
--- a/usb/gadget/1.2/default/lib/UsbGadgetUtils.cpp
+++ b/usb/gadget/1.2/default/lib/UsbGadgetUtils.cpp
@@ -190,6 +190,9 @@
 
 Status addAdb(MonitorFfs* monitorFfs, int* functionCount) {
     ALOGI("setCurrentUsbFunctions Adb");
+    if (!WriteStringToFile("1", DESC_USE_PATH))
+        return Status::ERROR;
+
     if (!monitorFfs->addInotifyFd("/dev/usb-ffs/adb/")) return Status::ERROR;
 
     if (linkFunction("ffs.adb", (*functionCount)++)) return Status::ERROR;
diff --git a/wifi/1.5/default/Android.mk b/wifi/1.5/default/Android.mk
deleted file mode 100644
index 1997b22..0000000
--- a/wifi/1.5/default/Android.mk
+++ /dev/null
@@ -1,198 +0,0 @@
-# Copyright (C) 2016 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-LOCAL_PATH := $(call my-dir)
-
-###
-### android.hardware.wifi static library
-###
-include $(CLEAR_VARS)
-LOCAL_MODULE := android.hardware.wifi@1.0-service-lib
-LOCAL_LICENSE_KINDS := SPDX-license-identifier-Apache-2.0
-LOCAL_LICENSE_CONDITIONS := notice
-LOCAL_NOTICE_FILE := $(LOCAL_PATH)/../../../NOTICE
-LOCAL_MODULE_RELATIVE_PATH := hw
-LOCAL_PROPRIETARY_MODULE := true
-LOCAL_CPPFLAGS := -Wall -Werror -Wextra
-ifdef WIFI_HAL_INTERFACE_COMBINATIONS
-LOCAL_CPPFLAGS += -DWIFI_HAL_INTERFACE_COMBINATIONS="$(WIFI_HAL_INTERFACE_COMBINATIONS)"
-endif
-ifdef WIFI_HIDL_FEATURE_AWARE
-LOCAL_CPPFLAGS += -DWIFI_HIDL_FEATURE_AWARE
-endif
-ifdef WIFI_HIDL_FEATURE_DUAL_INTERFACE
-LOCAL_CPPFLAGS += -DWIFI_HIDL_FEATURE_DUAL_INTERFACE
-endif
-ifdef WIFI_HIDL_FEATURE_DISABLE_AP
-LOCAL_CPPFLAGS += -DWIFI_HIDL_FEATURE_DISABLE_AP
-endif
-ifdef WIFI_HIDL_FEATURE_DISABLE_AP_MAC_RANDOMIZATION
-LOCAL_CPPFLAGS += -DWIFI_HIDL_FEATURE_DISABLE_AP_MAC_RANDOMIZATION
-endif
-ifdef WIFI_AVOID_IFACE_RESET_MAC_CHANGE
-LOCAL_CPPFLAGS += -DWIFI_AVOID_IFACE_RESET_MAC_CHANGE
-endif
-# Allow implicit fallthroughs in wifi_legacy_hal.cpp until they are fixed.
-LOCAL_CFLAGS += -Wno-error=implicit-fallthrough
-LOCAL_SRC_FILES := \
-    hidl_struct_util.cpp \
-    hidl_sync_util.cpp \
-    ringbuffer.cpp \
-    wifi.cpp \
-    wifi_ap_iface.cpp \
-    wifi_chip.cpp \
-    wifi_feature_flags.cpp \
-    wifi_iface_util.cpp \
-    wifi_legacy_hal.cpp \
-    wifi_legacy_hal_factory.cpp \
-    wifi_legacy_hal_stubs.cpp \
-    wifi_mode_controller.cpp \
-    wifi_nan_iface.cpp \
-    wifi_p2p_iface.cpp \
-    wifi_rtt_controller.cpp \
-    wifi_sta_iface.cpp \
-    wifi_status_util.cpp
-LOCAL_SHARED_LIBRARIES := \
-    libbase \
-    libcutils \
-    libhidlbase \
-    liblog \
-    libnl \
-    libutils \
-    libwifi-hal \
-    libwifi-system-iface \
-    libxml2 \
-    android.hardware.wifi@1.0 \
-    android.hardware.wifi@1.1 \
-    android.hardware.wifi@1.2 \
-    android.hardware.wifi@1.3 \
-    android.hardware.wifi@1.4 \
-    android.hardware.wifi@1.5
-LOCAL_C_INCLUDES += $(TOP)/external/libxml2/include
-LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)
-include $(BUILD_STATIC_LIBRARY)
-
-###
-### android.hardware.wifi daemon
-###
-include $(CLEAR_VARS)
-LOCAL_MODULE := android.hardware.wifi@1.0-service
-LOCAL_LICENSE_KINDS := SPDX-license-identifier-Apache-2.0
-LOCAL_LICENSE_CONDITIONS := notice
-LOCAL_NOTICE_FILE := $(LOCAL_PATH)/../../../NOTICE
-LOCAL_VINTF_FRAGMENTS := android.hardware.wifi@1.0-service.xml
-LOCAL_MODULE_RELATIVE_PATH := hw
-LOCAL_PROPRIETARY_MODULE := true
-LOCAL_CPPFLAGS := -Wall -Werror -Wextra
-LOCAL_SRC_FILES := \
-    service.cpp
-LOCAL_SHARED_LIBRARIES := \
-    libbase \
-    libcutils \
-    libhidlbase \
-    liblog \
-    libnl \
-    libutils \
-    libwifi-hal \
-    libwifi-system-iface \
-    libxml2 \
-    android.hardware.wifi@1.0 \
-    android.hardware.wifi@1.1 \
-    android.hardware.wifi@1.2 \
-    android.hardware.wifi@1.3 \
-    android.hardware.wifi@1.4 \
-    android.hardware.wifi@1.5
-LOCAL_STATIC_LIBRARIES := \
-    android.hardware.wifi@1.0-service-lib
-LOCAL_INIT_RC := android.hardware.wifi@1.0-service.rc
-include $(BUILD_EXECUTABLE)
-
-###
-### android.hardware.wifi daemon
-###
-include $(CLEAR_VARS)
-LOCAL_MODULE := android.hardware.wifi@1.0-service-lazy
-LOCAL_LICENSE_KINDS := SPDX-license-identifier-Apache-2.0
-LOCAL_LICENSE_CONDITIONS := notice
-LOCAL_NOTICE_FILE := $(LOCAL_PATH)/../../../NOTICE
-LOCAL_VINTF_FRAGMENTS := android.hardware.wifi@1.0-service.xml
-LOCAL_OVERRIDES_MODULES := android.hardware.wifi@1.0-service
-LOCAL_CFLAGS := -DLAZY_SERVICE
-LOCAL_MODULE_RELATIVE_PATH := hw
-LOCAL_PROPRIETARY_MODULE := true
-LOCAL_CPPFLAGS := -Wall -Werror -Wextra
-LOCAL_SRC_FILES := \
-    service.cpp
-LOCAL_SHARED_LIBRARIES := \
-    libbase \
-    libcutils \
-    libhidlbase \
-    liblog \
-    libnl \
-    libutils \
-    libwifi-hal \
-    libwifi-system-iface \
-    libxml2 \
-    android.hardware.wifi@1.0 \
-    android.hardware.wifi@1.1 \
-    android.hardware.wifi@1.2 \
-    android.hardware.wifi@1.3 \
-    android.hardware.wifi@1.4 \
-    android.hardware.wifi@1.5
-LOCAL_STATIC_LIBRARIES := \
-    android.hardware.wifi@1.0-service-lib
-LOCAL_INIT_RC := android.hardware.wifi@1.0-service-lazy.rc
-include $(BUILD_EXECUTABLE)
-
-###
-### android.hardware.wifi unit tests.
-###
-include $(CLEAR_VARS)
-LOCAL_MODULE := android.hardware.wifi@1.0-service-tests
-LOCAL_LICENSE_KINDS := SPDX-license-identifier-Apache-2.0
-LOCAL_LICENSE_CONDITIONS := notice
-LOCAL_NOTICE_FILE := $(LOCAL_PATH)/../../../NOTICE
-LOCAL_PROPRIETARY_MODULE := true
-LOCAL_CPPFLAGS := -Wall -Werror -Wextra
-LOCAL_SRC_FILES := \
-    tests/hidl_struct_util_unit_tests.cpp \
-    tests/main.cpp \
-    tests/mock_interface_tool.cpp \
-    tests/mock_wifi_feature_flags.cpp \
-    tests/mock_wifi_iface_util.cpp \
-    tests/mock_wifi_legacy_hal.cpp \
-    tests/mock_wifi_mode_controller.cpp \
-    tests/ringbuffer_unit_tests.cpp \
-    tests/wifi_nan_iface_unit_tests.cpp \
-    tests/wifi_chip_unit_tests.cpp \
-    tests/wifi_iface_util_unit_tests.cpp
-LOCAL_STATIC_LIBRARIES := \
-    libgmock \
-    libgtest \
-    android.hardware.wifi@1.0 \
-    android.hardware.wifi@1.1 \
-    android.hardware.wifi@1.2 \
-    android.hardware.wifi@1.3 \
-    android.hardware.wifi@1.4 \
-    android.hardware.wifi@1.5 \
-    android.hardware.wifi@1.0-service-lib
-LOCAL_SHARED_LIBRARIES := \
-    libbase \
-    libcutils \
-    libhidlbase \
-    liblog \
-    libnl \
-    libutils \
-    libwifi-hal \
-    libwifi-system-iface
-include $(BUILD_NATIVE_TEST)
diff --git a/wifi/1.5/default/android.hardware.wifi@1.0-service-lazy.rc b/wifi/1.5/default/android.hardware.wifi@1.0-service-lazy.rc
deleted file mode 100644
index bc6bb6a..0000000
--- a/wifi/1.5/default/android.hardware.wifi@1.0-service-lazy.rc
+++ /dev/null
@@ -1,13 +0,0 @@
-service vendor.wifi_hal_legacy /vendor/bin/hw/android.hardware.wifi@1.0-service-lazy
-    interface android.hardware.wifi@1.0::IWifi default
-    interface android.hardware.wifi@1.1::IWifi default
-    interface android.hardware.wifi@1.2::IWifi default
-    interface android.hardware.wifi@1.3::IWifi default
-    interface android.hardware.wifi@1.4::IWifi default
-    interface android.hardware.wifi@1.5::IWifi default
-    oneshot
-    disabled
-    class hal
-    capabilities NET_ADMIN NET_RAW SYS_MODULE
-    user wifi
-    group wifi gps
diff --git a/wifi/1.5/default/android.hardware.wifi@1.0-service.rc b/wifi/1.5/default/android.hardware.wifi@1.0-service.rc
deleted file mode 100644
index 05706ef..0000000
--- a/wifi/1.5/default/android.hardware.wifi@1.0-service.rc
+++ /dev/null
@@ -1,11 +0,0 @@
-service vendor.wifi_hal_legacy /vendor/bin/hw/android.hardware.wifi@1.0-service
-    interface android.hardware.wifi@1.0::IWifi default
-    interface android.hardware.wifi@1.1::IWifi default
-    interface android.hardware.wifi@1.2::IWifi default
-    interface android.hardware.wifi@1.3::IWifi default
-    interface android.hardware.wifi@1.4::IWifi default
-    interface android.hardware.wifi@1.5::IWifi default
-    class hal
-    capabilities NET_ADMIN NET_RAW SYS_MODULE
-    user wifi
-    group wifi gps
diff --git a/wifi/1.5/default/android.hardware.wifi@1.0-service.xml b/wifi/1.5/default/android.hardware.wifi@1.0-service.xml
deleted file mode 100644
index 88dd1e3..0000000
--- a/wifi/1.5/default/android.hardware.wifi@1.0-service.xml
+++ /dev/null
@@ -1,11 +0,0 @@
-<manifest version="1.0" type="device">
-    <hal format="hidl">
-        <name>android.hardware.wifi</name>
-        <transport>hwbinder</transport>
-        <version>1.5</version>
-        <interface>
-            <name>IWifi</name>
-            <instance>default</instance>
-        </interface>
-    </hal>
-</manifest>
diff --git a/wifi/1.5/default/hidl_callback_util.h b/wifi/1.5/default/hidl_callback_util.h
deleted file mode 100644
index d144658..0000000
--- a/wifi/1.5/default/hidl_callback_util.h
+++ /dev/null
@@ -1,124 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef HIDL_CALLBACK_UTIL_H_
-#define HIDL_CALLBACK_UTIL_H_
-
-#include <set>
-
-#include <hidl/HidlSupport.h>
-
-namespace {
-// Type of callback invoked by the death handler.
-using on_death_cb_function = std::function<void(uint64_t)>;
-
-// Private class used to keep track of death of individual
-// callbacks stored in HidlCallbackHandler.
-template <typename CallbackType>
-class HidlDeathHandler : public android::hardware::hidl_death_recipient {
-   public:
-    HidlDeathHandler(const on_death_cb_function& user_cb_function)
-        : cb_function_(user_cb_function) {}
-    ~HidlDeathHandler() = default;
-
-    // Death notification for callbacks.
-    void serviceDied(
-        uint64_t cookie,
-        const android::wp<android::hidl::base::V1_0::IBase>& /* who */)
-        override {
-        cb_function_(cookie);
-    }
-
-   private:
-    on_death_cb_function cb_function_;
-
-    DISALLOW_COPY_AND_ASSIGN(HidlDeathHandler);
-};
-}  // namespace
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-namespace hidl_callback_util {
-template <typename CallbackType>
-// Provides a class to manage callbacks for the various HIDL interfaces and
-// handle the death of the process hosting each callback.
-class HidlCallbackHandler {
-   public:
-    HidlCallbackHandler()
-        : death_handler_(new HidlDeathHandler<CallbackType>(
-              std::bind(&HidlCallbackHandler::onObjectDeath, this,
-                        std::placeholders::_1))) {}
-    ~HidlCallbackHandler() = default;
-
-    bool addCallback(const sp<CallbackType>& cb) {
-        // TODO(b/33818800): Can't compare proxies yet. So, use the cookie
-        // (callback proxy's raw pointer) to track the death of individual
-        // clients.
-        uint64_t cookie = reinterpret_cast<uint64_t>(cb.get());
-        if (cb_set_.find(cb) != cb_set_.end()) {
-            LOG(WARNING) << "Duplicate death notification registration";
-            return true;
-        }
-        if (!cb->linkToDeath(death_handler_, cookie)) {
-            LOG(ERROR) << "Failed to register death notification";
-            return false;
-        }
-        cb_set_.insert(cb);
-        return true;
-    }
-
-    const std::set<android::sp<CallbackType>>& getCallbacks() {
-        return cb_set_;
-    }
-
-    // Death notification for callbacks.
-    void onObjectDeath(uint64_t cookie) {
-        CallbackType* cb = reinterpret_cast<CallbackType*>(cookie);
-        const auto& iter = cb_set_.find(cb);
-        if (iter == cb_set_.end()) {
-            LOG(ERROR) << "Unknown callback death notification received";
-            return;
-        }
-        cb_set_.erase(iter);
-        LOG(DEBUG) << "Dead callback removed from list";
-    }
-
-    void invalidate() {
-        for (const sp<CallbackType>& cb : cb_set_) {
-            if (!cb->unlinkToDeath(death_handler_)) {
-                LOG(ERROR) << "Failed to deregister death notification";
-            }
-        }
-        cb_set_.clear();
-    }
-
-   private:
-    std::set<sp<CallbackType>> cb_set_;
-    sp<HidlDeathHandler<CallbackType>> death_handler_;
-
-    DISALLOW_COPY_AND_ASSIGN(HidlCallbackHandler);
-};
-
-}  // namespace hidl_callback_util
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-#endif  // HIDL_CALLBACK_UTIL_H_
diff --git a/wifi/1.5/default/hidl_return_util.h b/wifi/1.5/default/hidl_return_util.h
deleted file mode 100644
index 4455185..0000000
--- a/wifi/1.5/default/hidl_return_util.h
+++ /dev/null
@@ -1,120 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef HIDL_RETURN_UTIL_H_
-#define HIDL_RETURN_UTIL_H_
-
-#include "hidl_sync_util.h"
-#include "wifi_status_util.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-namespace hidl_return_util {
-using namespace android::hardware::wifi::V1_0;
-
-/**
- * These utility functions are used to invoke a method on the provided
- * HIDL interface object.
- * These functions checks if the provided HIDL interface object is valid.
- * a) if valid, Invokes the corresponding internal implementation function of
- * the HIDL method. It then invokes the HIDL continuation callback with
- * the status and any returned values.
- * b) if invalid, invokes the HIDL continuation callback with the
- * provided error status and default values.
- */
-// Use for HIDL methods which return only an instance of WifiStatus.
-template <typename ObjT, typename WorkFuncT, typename... Args>
-Return<void> validateAndCall(
-    ObjT* obj, WifiStatusCode status_code_if_invalid, WorkFuncT&& work,
-    const std::function<void(const WifiStatus&)>& hidl_cb, Args&&... args) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (obj->isValid()) {
-        hidl_cb((obj->*work)(std::forward<Args>(args)...));
-    } else {
-        hidl_cb(createWifiStatus(status_code_if_invalid));
-    }
-    return Void();
-}
-
-// Use for HIDL methods which return only an instance of WifiStatus.
-// This version passes the global lock acquired to the body of the method.
-// Note: Only used by IWifi::stop() currently.
-template <typename ObjT, typename WorkFuncT, typename... Args>
-Return<void> validateAndCallWithLock(
-    ObjT* obj, WifiStatusCode status_code_if_invalid, WorkFuncT&& work,
-    const std::function<void(const WifiStatus&)>& hidl_cb, Args&&... args) {
-    auto lock = hidl_sync_util::acquireGlobalLock();
-    if (obj->isValid()) {
-        hidl_cb((obj->*work)(&lock, std::forward<Args>(args)...));
-    } else {
-        hidl_cb(createWifiStatus(status_code_if_invalid));
-    }
-    return Void();
-}
-
-// Use for HIDL methods which return instance of WifiStatus and a single return
-// value.
-template <typename ObjT, typename WorkFuncT, typename ReturnT, typename... Args>
-Return<void> validateAndCall(
-    ObjT* obj, WifiStatusCode status_code_if_invalid, WorkFuncT&& work,
-    const std::function<void(const WifiStatus&, ReturnT)>& hidl_cb,
-    Args&&... args) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (obj->isValid()) {
-        const auto& ret_pair = (obj->*work)(std::forward<Args>(args)...);
-        const WifiStatus& status = std::get<0>(ret_pair);
-        const auto& ret_value = std::get<1>(ret_pair);
-        hidl_cb(status, ret_value);
-    } else {
-        hidl_cb(createWifiStatus(status_code_if_invalid),
-                typename std::remove_reference<ReturnT>::type());
-    }
-    return Void();
-}
-
-// Use for HIDL methods which return instance of WifiStatus and 2 return
-// values.
-template <typename ObjT, typename WorkFuncT, typename ReturnT1,
-          typename ReturnT2, typename... Args>
-Return<void> validateAndCall(
-    ObjT* obj, WifiStatusCode status_code_if_invalid, WorkFuncT&& work,
-    const std::function<void(const WifiStatus&, ReturnT1, ReturnT2)>& hidl_cb,
-    Args&&... args) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (obj->isValid()) {
-        const auto& ret_tuple = (obj->*work)(std::forward<Args>(args)...);
-        const WifiStatus& status = std::get<0>(ret_tuple);
-        const auto& ret_value1 = std::get<1>(ret_tuple);
-        const auto& ret_value2 = std::get<2>(ret_tuple);
-        hidl_cb(status, ret_value1, ret_value2);
-    } else {
-        hidl_cb(createWifiStatus(status_code_if_invalid),
-                typename std::remove_reference<ReturnT1>::type(),
-                typename std::remove_reference<ReturnT2>::type());
-    }
-    return Void();
-}
-
-}  // namespace hidl_return_util
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-#endif  // HIDL_RETURN_UTIL_H_
diff --git a/wifi/1.5/default/hidl_struct_util.cpp b/wifi/1.5/default/hidl_struct_util.cpp
deleted file mode 100644
index 338a8f1..0000000
--- a/wifi/1.5/default/hidl_struct_util.cpp
+++ /dev/null
@@ -1,3059 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-#include <utils/SystemClock.h>
-
-#include "hidl_struct_util.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-namespace hidl_struct_util {
-
-WifiChannelWidthInMhz convertLegacyWifiChannelWidthToHidl(
-    legacy_hal::wifi_channel_width type);
-
-hidl_string safeConvertChar(const char* str, size_t max_len) {
-    const char* c = str;
-    size_t size = 0;
-    while (*c && (unsigned char)*c < 128 && size < max_len) {
-        ++size;
-        ++c;
-    }
-    return hidl_string(str, size);
-}
-
-IWifiChip::ChipCapabilityMask convertLegacyLoggerFeatureToHidlChipCapability(
-    uint32_t feature) {
-    using HidlChipCaps = IWifiChip::ChipCapabilityMask;
-    switch (feature) {
-        case legacy_hal::WIFI_LOGGER_MEMORY_DUMP_SUPPORTED:
-            return HidlChipCaps::DEBUG_MEMORY_FIRMWARE_DUMP;
-        case legacy_hal::WIFI_LOGGER_DRIVER_DUMP_SUPPORTED:
-            return HidlChipCaps::DEBUG_MEMORY_DRIVER_DUMP;
-        case legacy_hal::WIFI_LOGGER_CONNECT_EVENT_SUPPORTED:
-            return HidlChipCaps::DEBUG_RING_BUFFER_CONNECT_EVENT;
-        case legacy_hal::WIFI_LOGGER_POWER_EVENT_SUPPORTED:
-            return HidlChipCaps::DEBUG_RING_BUFFER_POWER_EVENT;
-        case legacy_hal::WIFI_LOGGER_WAKE_LOCK_SUPPORTED:
-            return HidlChipCaps::DEBUG_RING_BUFFER_WAKELOCK_EVENT;
-    };
-    CHECK(false) << "Unknown legacy feature: " << feature;
-    return {};
-}
-
-IWifiStaIface::StaIfaceCapabilityMask
-convertLegacyLoggerFeatureToHidlStaIfaceCapability(uint32_t feature) {
-    using HidlStaIfaceCaps = IWifiStaIface::StaIfaceCapabilityMask;
-    switch (feature) {
-        case legacy_hal::WIFI_LOGGER_PACKET_FATE_SUPPORTED:
-            return HidlStaIfaceCaps::DEBUG_PACKET_FATE;
-    };
-    CHECK(false) << "Unknown legacy feature: " << feature;
-    return {};
-}
-
-V1_5::IWifiChip::ChipCapabilityMask convertLegacyFeatureToHidlChipCapability(
-    uint64_t feature) {
-    using HidlChipCaps = V1_5::IWifiChip::ChipCapabilityMask;
-    switch (feature) {
-        case WIFI_FEATURE_SET_TX_POWER_LIMIT:
-            return HidlChipCaps::SET_TX_POWER_LIMIT;
-        case WIFI_FEATURE_USE_BODY_HEAD_SAR:
-            return HidlChipCaps::USE_BODY_HEAD_SAR;
-        case WIFI_FEATURE_D2D_RTT:
-            return HidlChipCaps::D2D_RTT;
-        case WIFI_FEATURE_D2AP_RTT:
-            return HidlChipCaps::D2AP_RTT;
-        case WIFI_FEATURE_INFRA_60G:
-            return HidlChipCaps::WIGIG;
-        case WIFI_FEATURE_SET_LATENCY_MODE:
-            return HidlChipCaps::SET_LATENCY_MODE;
-        case WIFI_FEATURE_P2P_RAND_MAC:
-            return HidlChipCaps::P2P_RAND_MAC;
-    };
-    CHECK(false) << "Unknown legacy feature: " << feature;
-    return {};
-}
-
-IWifiStaIface::StaIfaceCapabilityMask
-convertLegacyFeatureToHidlStaIfaceCapability(uint64_t feature) {
-    using HidlStaIfaceCaps = IWifiStaIface::StaIfaceCapabilityMask;
-    switch (feature) {
-        case WIFI_FEATURE_GSCAN:
-            return HidlStaIfaceCaps::BACKGROUND_SCAN;
-        case WIFI_FEATURE_LINK_LAYER_STATS:
-            return HidlStaIfaceCaps::LINK_LAYER_STATS;
-        case WIFI_FEATURE_RSSI_MONITOR:
-            return HidlStaIfaceCaps::RSSI_MONITOR;
-        case WIFI_FEATURE_CONTROL_ROAMING:
-            return HidlStaIfaceCaps::CONTROL_ROAMING;
-        case WIFI_FEATURE_IE_WHITELIST:
-            return HidlStaIfaceCaps::PROBE_IE_WHITELIST;
-        case WIFI_FEATURE_SCAN_RAND:
-            return HidlStaIfaceCaps::SCAN_RAND;
-        case WIFI_FEATURE_INFRA_5G:
-            return HidlStaIfaceCaps::STA_5G;
-        case WIFI_FEATURE_HOTSPOT:
-            return HidlStaIfaceCaps::HOTSPOT;
-        case WIFI_FEATURE_PNO:
-            return HidlStaIfaceCaps::PNO;
-        case WIFI_FEATURE_TDLS:
-            return HidlStaIfaceCaps::TDLS;
-        case WIFI_FEATURE_TDLS_OFFCHANNEL:
-            return HidlStaIfaceCaps::TDLS_OFFCHANNEL;
-        case WIFI_FEATURE_CONFIG_NDO:
-            return HidlStaIfaceCaps::ND_OFFLOAD;
-        case WIFI_FEATURE_MKEEP_ALIVE:
-            return HidlStaIfaceCaps::KEEP_ALIVE;
-    };
-    CHECK(false) << "Unknown legacy feature: " << feature;
-    return {};
-}
-
-bool convertLegacyFeaturesToHidlChipCapabilities(
-    uint64_t legacy_feature_set, uint32_t legacy_logger_feature_set,
-    uint32_t* hidl_caps) {
-    if (!hidl_caps) {
-        return false;
-    }
-    *hidl_caps = {};
-    using HidlChipCaps = IWifiChip::ChipCapabilityMask;
-    for (const auto feature : {legacy_hal::WIFI_LOGGER_MEMORY_DUMP_SUPPORTED,
-                               legacy_hal::WIFI_LOGGER_DRIVER_DUMP_SUPPORTED,
-                               legacy_hal::WIFI_LOGGER_CONNECT_EVENT_SUPPORTED,
-                               legacy_hal::WIFI_LOGGER_POWER_EVENT_SUPPORTED,
-                               legacy_hal::WIFI_LOGGER_WAKE_LOCK_SUPPORTED}) {
-        if (feature & legacy_logger_feature_set) {
-            *hidl_caps |=
-                convertLegacyLoggerFeatureToHidlChipCapability(feature);
-        }
-    }
-    std::vector<uint64_t> features = {WIFI_FEATURE_SET_TX_POWER_LIMIT,
-                                      WIFI_FEATURE_USE_BODY_HEAD_SAR,
-                                      WIFI_FEATURE_D2D_RTT,
-                                      WIFI_FEATURE_D2AP_RTT,
-                                      WIFI_FEATURE_INFRA_60G,
-                                      WIFI_FEATURE_SET_LATENCY_MODE,
-                                      WIFI_FEATURE_P2P_RAND_MAC};
-    for (const auto feature : features) {
-        if (feature & legacy_feature_set) {
-            *hidl_caps |= convertLegacyFeatureToHidlChipCapability(feature);
-        }
-    }
-
-    // There are no flags for these 3 in the legacy feature set. Adding them to
-    // the set because all the current devices support it.
-    *hidl_caps |= HidlChipCaps::DEBUG_RING_BUFFER_VENDOR_DATA;
-    *hidl_caps |= HidlChipCaps::DEBUG_HOST_WAKE_REASON_STATS;
-    *hidl_caps |= HidlChipCaps::DEBUG_ERROR_ALERTS;
-    return true;
-}
-
-WifiDebugRingBufferFlags convertLegacyDebugRingBufferFlagsToHidl(
-    uint32_t flag) {
-    switch (flag) {
-        case WIFI_RING_BUFFER_FLAG_HAS_BINARY_ENTRIES:
-            return WifiDebugRingBufferFlags::HAS_BINARY_ENTRIES;
-        case WIFI_RING_BUFFER_FLAG_HAS_ASCII_ENTRIES:
-            return WifiDebugRingBufferFlags::HAS_ASCII_ENTRIES;
-    };
-    CHECK(false) << "Unknown legacy flag: " << flag;
-    return {};
-}
-
-bool convertLegacyDebugRingBufferStatusToHidl(
-    const legacy_hal::wifi_ring_buffer_status& legacy_status,
-    WifiDebugRingBufferStatus* hidl_status) {
-    if (!hidl_status) {
-        return false;
-    }
-    *hidl_status = {};
-    hidl_status->ringName =
-        safeConvertChar(reinterpret_cast<const char*>(legacy_status.name),
-                        sizeof(legacy_status.name));
-    hidl_status->flags = 0;
-    for (const auto flag : {WIFI_RING_BUFFER_FLAG_HAS_BINARY_ENTRIES,
-                            WIFI_RING_BUFFER_FLAG_HAS_ASCII_ENTRIES}) {
-        if (flag & legacy_status.flags) {
-            hidl_status->flags |= static_cast<
-                std::underlying_type<WifiDebugRingBufferFlags>::type>(
-                convertLegacyDebugRingBufferFlagsToHidl(flag));
-        }
-    }
-    hidl_status->ringId = legacy_status.ring_id;
-    hidl_status->sizeInBytes = legacy_status.ring_buffer_byte_size;
-    // Calculate free size of the ring the buffer. We don't need to send the
-    // exact read/write pointers that were there in the legacy HAL interface.
-    if (legacy_status.written_bytes >= legacy_status.read_bytes) {
-        hidl_status->freeSizeInBytes =
-            legacy_status.ring_buffer_byte_size -
-            (legacy_status.written_bytes - legacy_status.read_bytes);
-    } else {
-        hidl_status->freeSizeInBytes =
-            legacy_status.read_bytes - legacy_status.written_bytes;
-    }
-    hidl_status->verboseLevel = legacy_status.verbose_level;
-    return true;
-}
-
-bool convertLegacyVectorOfDebugRingBufferStatusToHidl(
-    const std::vector<legacy_hal::wifi_ring_buffer_status>& legacy_status_vec,
-    std::vector<WifiDebugRingBufferStatus>* hidl_status_vec) {
-    if (!hidl_status_vec) {
-        return false;
-    }
-    *hidl_status_vec = {};
-    for (const auto& legacy_status : legacy_status_vec) {
-        WifiDebugRingBufferStatus hidl_status;
-        if (!convertLegacyDebugRingBufferStatusToHidl(legacy_status,
-                                                      &hidl_status)) {
-            return false;
-        }
-        hidl_status_vec->push_back(hidl_status);
-    }
-    return true;
-}
-
-bool convertLegacyWakeReasonStatsToHidl(
-    const legacy_hal::WakeReasonStats& legacy_stats,
-    WifiDebugHostWakeReasonStats* hidl_stats) {
-    if (!hidl_stats) {
-        return false;
-    }
-    *hidl_stats = {};
-    hidl_stats->totalCmdEventWakeCnt =
-        legacy_stats.wake_reason_cnt.total_cmd_event_wake;
-    hidl_stats->cmdEventWakeCntPerType = legacy_stats.cmd_event_wake_cnt;
-    hidl_stats->totalDriverFwLocalWakeCnt =
-        legacy_stats.wake_reason_cnt.total_driver_fw_local_wake;
-    hidl_stats->driverFwLocalWakeCntPerType =
-        legacy_stats.driver_fw_local_wake_cnt;
-    hidl_stats->totalRxPacketWakeCnt =
-        legacy_stats.wake_reason_cnt.total_rx_data_wake;
-    hidl_stats->rxPktWakeDetails.rxUnicastCnt =
-        legacy_stats.wake_reason_cnt.rx_wake_details.rx_unicast_cnt;
-    hidl_stats->rxPktWakeDetails.rxMulticastCnt =
-        legacy_stats.wake_reason_cnt.rx_wake_details.rx_multicast_cnt;
-    hidl_stats->rxPktWakeDetails.rxBroadcastCnt =
-        legacy_stats.wake_reason_cnt.rx_wake_details.rx_broadcast_cnt;
-    hidl_stats->rxMulticastPkWakeDetails.ipv4RxMulticastAddrCnt =
-        legacy_stats.wake_reason_cnt.rx_multicast_wake_pkt_info
-            .ipv4_rx_multicast_addr_cnt;
-    hidl_stats->rxMulticastPkWakeDetails.ipv6RxMulticastAddrCnt =
-        legacy_stats.wake_reason_cnt.rx_multicast_wake_pkt_info
-            .ipv6_rx_multicast_addr_cnt;
-    hidl_stats->rxMulticastPkWakeDetails.otherRxMulticastAddrCnt =
-        legacy_stats.wake_reason_cnt.rx_multicast_wake_pkt_info
-            .other_rx_multicast_addr_cnt;
-    hidl_stats->rxIcmpPkWakeDetails.icmpPkt =
-        legacy_stats.wake_reason_cnt.rx_wake_pkt_classification_info.icmp_pkt;
-    hidl_stats->rxIcmpPkWakeDetails.icmp6Pkt =
-        legacy_stats.wake_reason_cnt.rx_wake_pkt_classification_info.icmp6_pkt;
-    hidl_stats->rxIcmpPkWakeDetails.icmp6Ra =
-        legacy_stats.wake_reason_cnt.rx_wake_pkt_classification_info.icmp6_ra;
-    hidl_stats->rxIcmpPkWakeDetails.icmp6Na =
-        legacy_stats.wake_reason_cnt.rx_wake_pkt_classification_info.icmp6_na;
-    hidl_stats->rxIcmpPkWakeDetails.icmp6Ns =
-        legacy_stats.wake_reason_cnt.rx_wake_pkt_classification_info.icmp6_ns;
-    return true;
-}
-
-legacy_hal::wifi_power_scenario convertHidlTxPowerScenarioToLegacy(
-    V1_1::IWifiChip::TxPowerScenario hidl_scenario) {
-    switch (hidl_scenario) {
-        // This is the only supported scenario for V1_1
-        case V1_1::IWifiChip::TxPowerScenario::VOICE_CALL:
-            return legacy_hal::WIFI_POWER_SCENARIO_VOICE_CALL;
-    };
-    CHECK(false);
-}
-
-legacy_hal::wifi_power_scenario convertHidlTxPowerScenarioToLegacy_1_2(
-    V1_2::IWifiChip::TxPowerScenario hidl_scenario) {
-    switch (hidl_scenario) {
-        // This is the only supported scenario for V1_1
-        case V1_2::IWifiChip::TxPowerScenario::VOICE_CALL:
-            return legacy_hal::WIFI_POWER_SCENARIO_VOICE_CALL;
-        // Those are the supported scenarios for V1_2
-        case V1_2::IWifiChip::TxPowerScenario::ON_HEAD_CELL_OFF:
-            return legacy_hal::WIFI_POWER_SCENARIO_ON_HEAD_CELL_OFF;
-        case V1_2::IWifiChip::TxPowerScenario::ON_HEAD_CELL_ON:
-            return legacy_hal::WIFI_POWER_SCENARIO_ON_HEAD_CELL_ON;
-        case V1_2::IWifiChip::TxPowerScenario::ON_BODY_CELL_OFF:
-            return legacy_hal::WIFI_POWER_SCENARIO_ON_BODY_CELL_OFF;
-        case V1_2::IWifiChip::TxPowerScenario::ON_BODY_CELL_ON:
-            return legacy_hal::WIFI_POWER_SCENARIO_ON_BODY_CELL_ON;
-    };
-    CHECK(false);
-}
-
-legacy_hal::wifi_latency_mode convertHidlLatencyModeToLegacy(
-    V1_3::IWifiChip::LatencyMode hidl_latency_mode) {
-    switch (hidl_latency_mode) {
-        case V1_3::IWifiChip::LatencyMode::NORMAL:
-            return legacy_hal::WIFI_LATENCY_MODE_NORMAL;
-        case V1_3::IWifiChip::LatencyMode::LOW:
-            return legacy_hal::WIFI_LATENCY_MODE_LOW;
-    }
-    CHECK(false);
-}
-
-bool convertLegacyWifiMacInfoToHidl(
-    const legacy_hal::WifiMacInfo& legacy_mac_info,
-    V1_4::IWifiChipEventCallback::RadioModeInfo* hidl_radio_mode_info) {
-    if (!hidl_radio_mode_info) {
-        return false;
-    }
-    *hidl_radio_mode_info = {};
-
-    hidl_radio_mode_info->radioId = legacy_mac_info.wlan_mac_id;
-    // Convert from bitmask of bands in the legacy HAL to enum value in
-    // the HIDL interface.
-    if (legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_6_0_BAND &&
-        legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_5_0_BAND &&
-        legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_2_4_BAND) {
-        hidl_radio_mode_info->bandInfo = V1_4::WifiBand::BAND_24GHZ_5GHZ_6GHZ;
-    } else if (legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_6_0_BAND &&
-               legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_5_0_BAND) {
-        hidl_radio_mode_info->bandInfo = V1_4::WifiBand::BAND_5GHZ_6GHZ;
-    } else if (legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_6_0_BAND) {
-        hidl_radio_mode_info->bandInfo = V1_4::WifiBand::BAND_6GHZ;
-    } else if (legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_2_4_BAND &&
-               legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_5_0_BAND) {
-        hidl_radio_mode_info->bandInfo = V1_4::WifiBand::BAND_24GHZ_5GHZ;
-    } else if (legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_2_4_BAND) {
-        hidl_radio_mode_info->bandInfo = V1_4::WifiBand::BAND_24GHZ;
-    } else if (legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_5_0_BAND) {
-        hidl_radio_mode_info->bandInfo = V1_4::WifiBand::BAND_5GHZ;
-    } else {
-        hidl_radio_mode_info->bandInfo = V1_4::WifiBand::BAND_UNSPECIFIED;
-    }
-    std::vector<V1_2::IWifiChipEventCallback::IfaceInfo> iface_info_vec;
-    for (const auto& legacy_iface_info : legacy_mac_info.iface_infos) {
-        V1_2::IWifiChipEventCallback::IfaceInfo iface_info;
-        iface_info.name = legacy_iface_info.name;
-        iface_info.channel = legacy_iface_info.channel;
-        iface_info_vec.push_back(iface_info);
-    }
-    hidl_radio_mode_info->ifaceInfos = iface_info_vec;
-    return true;
-}
-
-uint32_t convertHidlWifiBandToLegacyMacBand(V1_5::WifiBand hidl_band) {
-    switch (hidl_band) {
-        case V1_5::WifiBand::BAND_24GHZ:
-            return legacy_hal::WLAN_MAC_2_4_BAND;
-        case V1_5::WifiBand::BAND_5GHZ:
-        case V1_5::WifiBand::BAND_5GHZ_DFS:
-        case V1_5::WifiBand::BAND_5GHZ_WITH_DFS:
-            return legacy_hal::WLAN_MAC_5_0_BAND;
-        case V1_5::WifiBand::BAND_24GHZ_5GHZ:
-        case V1_5::WifiBand::BAND_24GHZ_5GHZ_WITH_DFS:
-            return (legacy_hal::WLAN_MAC_2_4_BAND |
-                    legacy_hal::WLAN_MAC_5_0_BAND);
-        case V1_5::WifiBand::BAND_6GHZ:
-            return legacy_hal::WLAN_MAC_6_0_BAND;
-        case V1_5::WifiBand::BAND_5GHZ_6GHZ:
-            return (legacy_hal::WLAN_MAC_5_0_BAND |
-                    legacy_hal::WLAN_MAC_6_0_BAND);
-        case V1_5::WifiBand::BAND_24GHZ_5GHZ_6GHZ:
-        case V1_5::WifiBand::BAND_24GHZ_5GHZ_WITH_DFS_6GHZ:
-            return (legacy_hal::WLAN_MAC_2_4_BAND |
-                    legacy_hal::WLAN_MAC_5_0_BAND |
-                    legacy_hal::WLAN_MAC_6_0_BAND);
-        case V1_5::WifiBand::BAND_60GHZ:
-            return legacy_hal::WLAN_MAC_60_0_BAND;
-        default:
-            return (
-                legacy_hal::WLAN_MAC_2_4_BAND | legacy_hal::WLAN_MAC_5_0_BAND |
-                legacy_hal::WLAN_MAC_6_0_BAND | legacy_hal::WLAN_MAC_60_0_BAND);
-    }
-}
-
-uint32_t convertHidlWifiIfaceModeToLegacy(uint32_t hidl_iface_mask) {
-    uint32_t legacy_iface_mask = 0;
-    if (hidl_iface_mask & V1_5::WifiIfaceMode::IFACE_MODE_STA) {
-        legacy_iface_mask |= (1 << legacy_hal::WIFI_INTERFACE_STA);
-    }
-    if (hidl_iface_mask & V1_5::WifiIfaceMode::IFACE_MODE_SOFTAP) {
-        legacy_iface_mask |= (1 << legacy_hal::WIFI_INTERFACE_SOFTAP);
-    }
-    if (hidl_iface_mask & V1_5::WifiIfaceMode::IFACE_MODE_P2P_CLIENT) {
-        legacy_iface_mask |= (1 << legacy_hal::WIFI_INTERFACE_P2P_CLIENT);
-    }
-    if (hidl_iface_mask & V1_5::WifiIfaceMode::IFACE_MODE_P2P_GO) {
-        legacy_iface_mask |= (1 << legacy_hal::WIFI_INTERFACE_P2P_GO);
-    }
-    if (hidl_iface_mask & V1_5::WifiIfaceMode::IFACE_MODE_NAN) {
-        legacy_iface_mask |= (1 << legacy_hal::WIFI_INTERFACE_NAN);
-    }
-    if (hidl_iface_mask & V1_5::WifiIfaceMode::IFACE_MODE_TDLS) {
-        legacy_iface_mask |= (1 << legacy_hal::WIFI_INTERFACE_TDLS);
-    }
-    if (hidl_iface_mask & V1_5::WifiIfaceMode::IFACE_MODE_MESH) {
-        legacy_iface_mask |= (1 << legacy_hal::WIFI_INTERFACE_MESH);
-    }
-    if (hidl_iface_mask & V1_5::WifiIfaceMode::IFACE_MODE_IBSS) {
-        legacy_iface_mask |= (1 << legacy_hal::WIFI_INTERFACE_IBSS);
-    }
-    return legacy_iface_mask;
-}
-
-uint32_t convertLegacyWifiInterfaceModeToHidl(uint32_t legacy_iface_mask) {
-    uint32_t hidl_iface_mask = 0;
-    if (legacy_iface_mask & (1 << legacy_hal::WIFI_INTERFACE_STA)) {
-        hidl_iface_mask |= V1_5::WifiIfaceMode::IFACE_MODE_STA;
-    }
-    if (legacy_iface_mask & (1 << legacy_hal::WIFI_INTERFACE_SOFTAP)) {
-        hidl_iface_mask |= V1_5::WifiIfaceMode::IFACE_MODE_SOFTAP;
-    }
-    if (legacy_iface_mask & (1 << legacy_hal::WIFI_INTERFACE_P2P_CLIENT)) {
-        hidl_iface_mask |= V1_5::WifiIfaceMode::IFACE_MODE_P2P_CLIENT;
-    }
-    if (legacy_iface_mask & (1 << legacy_hal::WIFI_INTERFACE_P2P_GO)) {
-        hidl_iface_mask |= V1_5::WifiIfaceMode::IFACE_MODE_P2P_GO;
-    }
-    if (legacy_iface_mask & (1 << legacy_hal::WIFI_INTERFACE_NAN)) {
-        hidl_iface_mask |= V1_5::WifiIfaceMode::IFACE_MODE_NAN;
-    }
-    if (legacy_iface_mask & (1 << legacy_hal::WIFI_INTERFACE_TDLS)) {
-        hidl_iface_mask |= V1_5::WifiIfaceMode::IFACE_MODE_TDLS;
-    }
-    if (legacy_iface_mask & (1 << legacy_hal::WIFI_INTERFACE_MESH)) {
-        hidl_iface_mask |= V1_5::WifiIfaceMode::IFACE_MODE_MESH;
-    }
-    if (legacy_iface_mask & (1 << legacy_hal::WIFI_INTERFACE_IBSS)) {
-        hidl_iface_mask |= V1_5::WifiIfaceMode::IFACE_MODE_IBSS;
-    }
-    return hidl_iface_mask;
-}
-
-uint32_t convertHidlUsableChannelFilterToLegacy(uint32_t hidl_filter_mask) {
-    uint32_t legacy_filter_mask = 0;
-    if (hidl_filter_mask &
-        IWifiChip::UsableChannelFilter::CELLULAR_COEXISTENCE) {
-        legacy_filter_mask |=
-            legacy_hal::WIFI_USABLE_CHANNEL_FILTER_CELLULAR_COEXISTENCE;
-    }
-    if (hidl_filter_mask & IWifiChip::UsableChannelFilter::CONCURRENCY) {
-        legacy_filter_mask |=
-            legacy_hal::WIFI_USABLE_CHANNEL_FILTER_CONCURRENCY;
-    }
-    return legacy_filter_mask;
-}
-
-bool convertLegacyWifiUsableChannelToHidl(
-    const legacy_hal::wifi_usable_channel& legacy_usable_channel,
-    V1_5::WifiUsableChannel* hidl_usable_channel) {
-    if (!hidl_usable_channel) {
-        return false;
-    }
-    *hidl_usable_channel = {};
-    hidl_usable_channel->channel = legacy_usable_channel.freq;
-    hidl_usable_channel->channelBandwidth =
-        convertLegacyWifiChannelWidthToHidl(legacy_usable_channel.width);
-    hidl_usable_channel->ifaceModeMask = convertLegacyWifiInterfaceModeToHidl(
-        legacy_usable_channel.iface_mode_mask);
-
-    return true;
-}
-
-bool convertLegacyWifiUsableChannelsToHidl(
-    const std::vector<legacy_hal::wifi_usable_channel>& legacy_usable_channels,
-    std::vector<V1_5::WifiUsableChannel>* hidl_usable_channels) {
-    if (!hidl_usable_channels) {
-        return false;
-    }
-    *hidl_usable_channels = {};
-    for (const auto& legacy_usable_channel : legacy_usable_channels) {
-        V1_5::WifiUsableChannel hidl_usable_channel;
-        if (!convertLegacyWifiUsableChannelToHidl(legacy_usable_channel,
-                                                  &hidl_usable_channel)) {
-            return false;
-        }
-        hidl_usable_channels->push_back(hidl_usable_channel);
-    }
-    return true;
-}
-
-bool convertLegacyWifiMacInfosToHidl(
-    const std::vector<legacy_hal::WifiMacInfo>& legacy_mac_infos,
-    std::vector<V1_4::IWifiChipEventCallback::RadioModeInfo>*
-        hidl_radio_mode_infos) {
-    if (!hidl_radio_mode_infos) {
-        return false;
-    }
-    *hidl_radio_mode_infos = {};
-
-    for (const auto& legacy_mac_info : legacy_mac_infos) {
-        V1_4::IWifiChipEventCallback::RadioModeInfo hidl_radio_mode_info;
-        if (!convertLegacyWifiMacInfoToHidl(legacy_mac_info,
-                                            &hidl_radio_mode_info)) {
-            return false;
-        }
-        hidl_radio_mode_infos->push_back(hidl_radio_mode_info);
-    }
-    return true;
-}
-
-bool convertLegacyFeaturesToHidlStaCapabilities(
-    uint64_t legacy_feature_set, uint32_t legacy_logger_feature_set,
-    uint32_t* hidl_caps) {
-    if (!hidl_caps) {
-        return false;
-    }
-    *hidl_caps = {};
-    using HidlStaIfaceCaps = IWifiStaIface::StaIfaceCapabilityMask;
-    for (const auto feature : {legacy_hal::WIFI_LOGGER_PACKET_FATE_SUPPORTED}) {
-        if (feature & legacy_logger_feature_set) {
-            *hidl_caps |=
-                convertLegacyLoggerFeatureToHidlStaIfaceCapability(feature);
-        }
-    }
-    for (const auto feature :
-         {WIFI_FEATURE_GSCAN, WIFI_FEATURE_LINK_LAYER_STATS,
-          WIFI_FEATURE_RSSI_MONITOR, WIFI_FEATURE_CONTROL_ROAMING,
-          WIFI_FEATURE_IE_WHITELIST, WIFI_FEATURE_SCAN_RAND,
-          WIFI_FEATURE_INFRA_5G, WIFI_FEATURE_HOTSPOT, WIFI_FEATURE_PNO,
-          WIFI_FEATURE_TDLS, WIFI_FEATURE_TDLS_OFFCHANNEL,
-          WIFI_FEATURE_CONFIG_NDO, WIFI_FEATURE_MKEEP_ALIVE}) {
-        if (feature & legacy_feature_set) {
-            *hidl_caps |= convertLegacyFeatureToHidlStaIfaceCapability(feature);
-        }
-    }
-    // There is no flag for this one in the legacy feature set. Adding it to the
-    // set because all the current devices support it.
-    *hidl_caps |= HidlStaIfaceCaps::APF;
-    return true;
-}
-
-bool convertLegacyApfCapabilitiesToHidl(
-    const legacy_hal::PacketFilterCapabilities& legacy_caps,
-    StaApfPacketFilterCapabilities* hidl_caps) {
-    if (!hidl_caps) {
-        return false;
-    }
-    *hidl_caps = {};
-    hidl_caps->version = legacy_caps.version;
-    hidl_caps->maxLength = legacy_caps.max_len;
-    return true;
-}
-
-uint8_t convertHidlGscanReportEventFlagToLegacy(
-    StaBackgroundScanBucketEventReportSchemeMask hidl_flag) {
-    using HidlFlag = StaBackgroundScanBucketEventReportSchemeMask;
-    switch (hidl_flag) {
-        case HidlFlag::EACH_SCAN:
-            return REPORT_EVENTS_EACH_SCAN;
-        case HidlFlag::FULL_RESULTS:
-            return REPORT_EVENTS_FULL_RESULTS;
-        case HidlFlag::NO_BATCH:
-            return REPORT_EVENTS_NO_BATCH;
-    };
-    CHECK(false);
-}
-
-StaScanDataFlagMask convertLegacyGscanDataFlagToHidl(uint8_t legacy_flag) {
-    switch (legacy_flag) {
-        case legacy_hal::WIFI_SCAN_FLAG_INTERRUPTED:
-            return StaScanDataFlagMask::INTERRUPTED;
-    };
-    CHECK(false) << "Unknown legacy flag: " << legacy_flag;
-    // To silence the compiler warning about reaching the end of non-void
-    // function.
-    return {};
-}
-
-bool convertLegacyGscanCapabilitiesToHidl(
-    const legacy_hal::wifi_gscan_capabilities& legacy_caps,
-    StaBackgroundScanCapabilities* hidl_caps) {
-    if (!hidl_caps) {
-        return false;
-    }
-    *hidl_caps = {};
-    hidl_caps->maxCacheSize = legacy_caps.max_scan_cache_size;
-    hidl_caps->maxBuckets = legacy_caps.max_scan_buckets;
-    hidl_caps->maxApCachePerScan = legacy_caps.max_ap_cache_per_scan;
-    hidl_caps->maxReportingThreshold = legacy_caps.max_scan_reporting_threshold;
-    return true;
-}
-
-legacy_hal::wifi_band convertHidlWifiBandToLegacy(V1_0::WifiBand band) {
-    switch (band) {
-        case V1_0::WifiBand::BAND_UNSPECIFIED:
-            return legacy_hal::WIFI_BAND_UNSPECIFIED;
-        case V1_0::WifiBand::BAND_24GHZ:
-            return legacy_hal::WIFI_BAND_BG;
-        case V1_0::WifiBand::BAND_5GHZ:
-            return legacy_hal::WIFI_BAND_A;
-        case V1_0::WifiBand::BAND_5GHZ_DFS:
-            return legacy_hal::WIFI_BAND_A_DFS;
-        case V1_0::WifiBand::BAND_5GHZ_WITH_DFS:
-            return legacy_hal::WIFI_BAND_A_WITH_DFS;
-        case V1_0::WifiBand::BAND_24GHZ_5GHZ:
-            return legacy_hal::WIFI_BAND_ABG;
-        case V1_0::WifiBand::BAND_24GHZ_5GHZ_WITH_DFS:
-            return legacy_hal::WIFI_BAND_ABG_WITH_DFS;
-    };
-    CHECK(false);
-}
-
-bool convertHidlGscanParamsToLegacy(
-    const StaBackgroundScanParameters& hidl_scan_params,
-    legacy_hal::wifi_scan_cmd_params* legacy_scan_params) {
-    if (!legacy_scan_params) {
-        return false;
-    }
-    *legacy_scan_params = {};
-    legacy_scan_params->base_period = hidl_scan_params.basePeriodInMs;
-    legacy_scan_params->max_ap_per_scan = hidl_scan_params.maxApPerScan;
-    legacy_scan_params->report_threshold_percent =
-        hidl_scan_params.reportThresholdPercent;
-    legacy_scan_params->report_threshold_num_scans =
-        hidl_scan_params.reportThresholdNumScans;
-    if (hidl_scan_params.buckets.size() > MAX_BUCKETS) {
-        return false;
-    }
-    legacy_scan_params->num_buckets = hidl_scan_params.buckets.size();
-    for (uint32_t bucket_idx = 0; bucket_idx < hidl_scan_params.buckets.size();
-         bucket_idx++) {
-        const StaBackgroundScanBucketParameters& hidl_bucket_spec =
-            hidl_scan_params.buckets[bucket_idx];
-        legacy_hal::wifi_scan_bucket_spec& legacy_bucket_spec =
-            legacy_scan_params->buckets[bucket_idx];
-        if (hidl_bucket_spec.bucketIdx >= MAX_BUCKETS) {
-            return false;
-        }
-        legacy_bucket_spec.bucket = hidl_bucket_spec.bucketIdx;
-        legacy_bucket_spec.band =
-            convertHidlWifiBandToLegacy(hidl_bucket_spec.band);
-        legacy_bucket_spec.period = hidl_bucket_spec.periodInMs;
-        legacy_bucket_spec.max_period =
-            hidl_bucket_spec.exponentialMaxPeriodInMs;
-        legacy_bucket_spec.base = hidl_bucket_spec.exponentialBase;
-        legacy_bucket_spec.step_count = hidl_bucket_spec.exponentialStepCount;
-        legacy_bucket_spec.report_events = 0;
-        using HidlFlag = StaBackgroundScanBucketEventReportSchemeMask;
-        for (const auto flag : {HidlFlag::EACH_SCAN, HidlFlag::FULL_RESULTS,
-                                HidlFlag::NO_BATCH}) {
-            if (hidl_bucket_spec.eventReportScheme &
-                static_cast<std::underlying_type<HidlFlag>::type>(flag)) {
-                legacy_bucket_spec.report_events |=
-                    convertHidlGscanReportEventFlagToLegacy(flag);
-            }
-        }
-        if (hidl_bucket_spec.frequencies.size() > MAX_CHANNELS) {
-            return false;
-        }
-        legacy_bucket_spec.num_channels = hidl_bucket_spec.frequencies.size();
-        for (uint32_t freq_idx = 0;
-             freq_idx < hidl_bucket_spec.frequencies.size(); freq_idx++) {
-            legacy_bucket_spec.channels[freq_idx].channel =
-                hidl_bucket_spec.frequencies[freq_idx];
-        }
-    }
-    return true;
-}
-
-bool convertLegacyIeToHidl(
-    const legacy_hal::wifi_information_element& legacy_ie,
-    WifiInformationElement* hidl_ie) {
-    if (!hidl_ie) {
-        return false;
-    }
-    *hidl_ie = {};
-    hidl_ie->id = legacy_ie.id;
-    hidl_ie->data =
-        std::vector<uint8_t>(legacy_ie.data, legacy_ie.data + legacy_ie.len);
-    return true;
-}
-
-bool convertLegacyIeBlobToHidl(const uint8_t* ie_blob, uint32_t ie_blob_len,
-                               std::vector<WifiInformationElement>* hidl_ies) {
-    if (!ie_blob || !hidl_ies) {
-        return false;
-    }
-    *hidl_ies = {};
-    const uint8_t* ies_begin = ie_blob;
-    const uint8_t* ies_end = ie_blob + ie_blob_len;
-    const uint8_t* next_ie = ies_begin;
-    using wifi_ie = legacy_hal::wifi_information_element;
-    constexpr size_t kIeHeaderLen = sizeof(wifi_ie);
-    // Each IE should atleast have the header (i.e |id| & |len| fields).
-    while (next_ie + kIeHeaderLen <= ies_end) {
-        const wifi_ie& legacy_ie = (*reinterpret_cast<const wifi_ie*>(next_ie));
-        uint32_t curr_ie_len = kIeHeaderLen + legacy_ie.len;
-        if (next_ie + curr_ie_len > ies_end) {
-            LOG(ERROR) << "Error parsing IE blob. Next IE: " << (void*)next_ie
-                       << ", Curr IE len: " << curr_ie_len
-                       << ", IEs End: " << (void*)ies_end;
-            break;
-        }
-        WifiInformationElement hidl_ie;
-        if (!convertLegacyIeToHidl(legacy_ie, &hidl_ie)) {
-            LOG(ERROR) << "Error converting IE. Id: " << legacy_ie.id
-                       << ", len: " << legacy_ie.len;
-            break;
-        }
-        hidl_ies->push_back(std::move(hidl_ie));
-        next_ie += curr_ie_len;
-    }
-    // Check if the blob has been fully consumed.
-    if (next_ie != ies_end) {
-        LOG(ERROR) << "Failed to fully parse IE blob. Next IE: "
-                   << (void*)next_ie << ", IEs End: " << (void*)ies_end;
-    }
-    return true;
-}
-
-bool convertLegacyGscanResultToHidl(
-    const legacy_hal::wifi_scan_result& legacy_scan_result, bool has_ie_data,
-    StaScanResult* hidl_scan_result) {
-    if (!hidl_scan_result) {
-        return false;
-    }
-    *hidl_scan_result = {};
-    hidl_scan_result->timeStampInUs = legacy_scan_result.ts;
-    hidl_scan_result->ssid = std::vector<uint8_t>(
-        legacy_scan_result.ssid,
-        legacy_scan_result.ssid + strnlen(legacy_scan_result.ssid,
-                                          sizeof(legacy_scan_result.ssid) - 1));
-    memcpy(hidl_scan_result->bssid.data(), legacy_scan_result.bssid,
-           hidl_scan_result->bssid.size());
-    hidl_scan_result->frequency = legacy_scan_result.channel;
-    hidl_scan_result->rssi = legacy_scan_result.rssi;
-    hidl_scan_result->beaconPeriodInMs = legacy_scan_result.beacon_period;
-    hidl_scan_result->capability = legacy_scan_result.capability;
-    if (has_ie_data) {
-        std::vector<WifiInformationElement> ies;
-        if (!convertLegacyIeBlobToHidl(
-                reinterpret_cast<const uint8_t*>(legacy_scan_result.ie_data),
-                legacy_scan_result.ie_length, &ies)) {
-            return false;
-        }
-        hidl_scan_result->informationElements = std::move(ies);
-    }
-    return true;
-}
-
-bool convertLegacyCachedGscanResultsToHidl(
-    const legacy_hal::wifi_cached_scan_results& legacy_cached_scan_result,
-    StaScanData* hidl_scan_data) {
-    if (!hidl_scan_data) {
-        return false;
-    }
-    *hidl_scan_data = {};
-    hidl_scan_data->flags = 0;
-    for (const auto flag : {legacy_hal::WIFI_SCAN_FLAG_INTERRUPTED}) {
-        if (legacy_cached_scan_result.flags & flag) {
-            hidl_scan_data->flags |=
-                static_cast<std::underlying_type<StaScanDataFlagMask>::type>(
-                    convertLegacyGscanDataFlagToHidl(flag));
-        }
-    }
-    hidl_scan_data->bucketsScanned = legacy_cached_scan_result.buckets_scanned;
-
-    CHECK(legacy_cached_scan_result.num_results >= 0 &&
-          legacy_cached_scan_result.num_results <= MAX_AP_CACHE_PER_SCAN);
-    std::vector<StaScanResult> hidl_scan_results;
-    for (int32_t result_idx = 0;
-         result_idx < legacy_cached_scan_result.num_results; result_idx++) {
-        StaScanResult hidl_scan_result;
-        if (!convertLegacyGscanResultToHidl(
-                legacy_cached_scan_result.results[result_idx], false,
-                &hidl_scan_result)) {
-            return false;
-        }
-        hidl_scan_results.push_back(hidl_scan_result);
-    }
-    hidl_scan_data->results = std::move(hidl_scan_results);
-    return true;
-}
-
-bool convertLegacyVectorOfCachedGscanResultsToHidl(
-    const std::vector<legacy_hal::wifi_cached_scan_results>&
-        legacy_cached_scan_results,
-    std::vector<StaScanData>* hidl_scan_datas) {
-    if (!hidl_scan_datas) {
-        return false;
-    }
-    *hidl_scan_datas = {};
-    for (const auto& legacy_cached_scan_result : legacy_cached_scan_results) {
-        StaScanData hidl_scan_data;
-        if (!convertLegacyCachedGscanResultsToHidl(legacy_cached_scan_result,
-                                                   &hidl_scan_data)) {
-            return false;
-        }
-        hidl_scan_datas->push_back(hidl_scan_data);
-    }
-    return true;
-}
-
-WifiDebugTxPacketFate convertLegacyDebugTxPacketFateToHidl(
-    legacy_hal::wifi_tx_packet_fate fate) {
-    switch (fate) {
-        case legacy_hal::TX_PKT_FATE_ACKED:
-            return WifiDebugTxPacketFate::ACKED;
-        case legacy_hal::TX_PKT_FATE_SENT:
-            return WifiDebugTxPacketFate::SENT;
-        case legacy_hal::TX_PKT_FATE_FW_QUEUED:
-            return WifiDebugTxPacketFate::FW_QUEUED;
-        case legacy_hal::TX_PKT_FATE_FW_DROP_INVALID:
-            return WifiDebugTxPacketFate::FW_DROP_INVALID;
-        case legacy_hal::TX_PKT_FATE_FW_DROP_NOBUFS:
-            return WifiDebugTxPacketFate::FW_DROP_NOBUFS;
-        case legacy_hal::TX_PKT_FATE_FW_DROP_OTHER:
-            return WifiDebugTxPacketFate::FW_DROP_OTHER;
-        case legacy_hal::TX_PKT_FATE_DRV_QUEUED:
-            return WifiDebugTxPacketFate::DRV_QUEUED;
-        case legacy_hal::TX_PKT_FATE_DRV_DROP_INVALID:
-            return WifiDebugTxPacketFate::DRV_DROP_INVALID;
-        case legacy_hal::TX_PKT_FATE_DRV_DROP_NOBUFS:
-            return WifiDebugTxPacketFate::DRV_DROP_NOBUFS;
-        case legacy_hal::TX_PKT_FATE_DRV_DROP_OTHER:
-            return WifiDebugTxPacketFate::DRV_DROP_OTHER;
-    };
-    CHECK(false) << "Unknown legacy fate type: " << fate;
-}
-
-WifiDebugRxPacketFate convertLegacyDebugRxPacketFateToHidl(
-    legacy_hal::wifi_rx_packet_fate fate) {
-    switch (fate) {
-        case legacy_hal::RX_PKT_FATE_SUCCESS:
-            return WifiDebugRxPacketFate::SUCCESS;
-        case legacy_hal::RX_PKT_FATE_FW_QUEUED:
-            return WifiDebugRxPacketFate::FW_QUEUED;
-        case legacy_hal::RX_PKT_FATE_FW_DROP_FILTER:
-            return WifiDebugRxPacketFate::FW_DROP_FILTER;
-        case legacy_hal::RX_PKT_FATE_FW_DROP_INVALID:
-            return WifiDebugRxPacketFate::FW_DROP_INVALID;
-        case legacy_hal::RX_PKT_FATE_FW_DROP_NOBUFS:
-            return WifiDebugRxPacketFate::FW_DROP_NOBUFS;
-        case legacy_hal::RX_PKT_FATE_FW_DROP_OTHER:
-            return WifiDebugRxPacketFate::FW_DROP_OTHER;
-        case legacy_hal::RX_PKT_FATE_DRV_QUEUED:
-            return WifiDebugRxPacketFate::DRV_QUEUED;
-        case legacy_hal::RX_PKT_FATE_DRV_DROP_FILTER:
-            return WifiDebugRxPacketFate::DRV_DROP_FILTER;
-        case legacy_hal::RX_PKT_FATE_DRV_DROP_INVALID:
-            return WifiDebugRxPacketFate::DRV_DROP_INVALID;
-        case legacy_hal::RX_PKT_FATE_DRV_DROP_NOBUFS:
-            return WifiDebugRxPacketFate::DRV_DROP_NOBUFS;
-        case legacy_hal::RX_PKT_FATE_DRV_DROP_OTHER:
-            return WifiDebugRxPacketFate::DRV_DROP_OTHER;
-    };
-    CHECK(false) << "Unknown legacy fate type: " << fate;
-}
-
-WifiDebugPacketFateFrameType convertLegacyDebugPacketFateFrameTypeToHidl(
-    legacy_hal::frame_type type) {
-    switch (type) {
-        case legacy_hal::FRAME_TYPE_UNKNOWN:
-            return WifiDebugPacketFateFrameType::UNKNOWN;
-        case legacy_hal::FRAME_TYPE_ETHERNET_II:
-            return WifiDebugPacketFateFrameType::ETHERNET_II;
-        case legacy_hal::FRAME_TYPE_80211_MGMT:
-            return WifiDebugPacketFateFrameType::MGMT_80211;
-    };
-    CHECK(false) << "Unknown legacy frame type: " << type;
-}
-
-bool convertLegacyDebugPacketFateFrameToHidl(
-    const legacy_hal::frame_info& legacy_frame,
-    WifiDebugPacketFateFrameInfo* hidl_frame) {
-    if (!hidl_frame) {
-        return false;
-    }
-    *hidl_frame = {};
-    hidl_frame->frameType =
-        convertLegacyDebugPacketFateFrameTypeToHidl(legacy_frame.payload_type);
-    hidl_frame->frameLen = legacy_frame.frame_len;
-    hidl_frame->driverTimestampUsec = legacy_frame.driver_timestamp_usec;
-    hidl_frame->firmwareTimestampUsec = legacy_frame.firmware_timestamp_usec;
-    const uint8_t* frame_begin = reinterpret_cast<const uint8_t*>(
-        legacy_frame.frame_content.ethernet_ii_bytes);
-    hidl_frame->frameContent =
-        std::vector<uint8_t>(frame_begin, frame_begin + legacy_frame.frame_len);
-    return true;
-}
-
-bool convertLegacyDebugTxPacketFateToHidl(
-    const legacy_hal::wifi_tx_report& legacy_fate,
-    WifiDebugTxPacketFateReport* hidl_fate) {
-    if (!hidl_fate) {
-        return false;
-    }
-    *hidl_fate = {};
-    hidl_fate->fate = convertLegacyDebugTxPacketFateToHidl(legacy_fate.fate);
-    return convertLegacyDebugPacketFateFrameToHidl(legacy_fate.frame_inf,
-                                                   &hidl_fate->frameInfo);
-}
-
-bool convertLegacyVectorOfDebugTxPacketFateToHidl(
-    const std::vector<legacy_hal::wifi_tx_report>& legacy_fates,
-    std::vector<WifiDebugTxPacketFateReport>* hidl_fates) {
-    if (!hidl_fates) {
-        return false;
-    }
-    *hidl_fates = {};
-    for (const auto& legacy_fate : legacy_fates) {
-        WifiDebugTxPacketFateReport hidl_fate;
-        if (!convertLegacyDebugTxPacketFateToHidl(legacy_fate, &hidl_fate)) {
-            return false;
-        }
-        hidl_fates->push_back(hidl_fate);
-    }
-    return true;
-}
-
-bool convertLegacyDebugRxPacketFateToHidl(
-    const legacy_hal::wifi_rx_report& legacy_fate,
-    WifiDebugRxPacketFateReport* hidl_fate) {
-    if (!hidl_fate) {
-        return false;
-    }
-    *hidl_fate = {};
-    hidl_fate->fate = convertLegacyDebugRxPacketFateToHidl(legacy_fate.fate);
-    return convertLegacyDebugPacketFateFrameToHidl(legacy_fate.frame_inf,
-                                                   &hidl_fate->frameInfo);
-}
-
-bool convertLegacyVectorOfDebugRxPacketFateToHidl(
-    const std::vector<legacy_hal::wifi_rx_report>& legacy_fates,
-    std::vector<WifiDebugRxPacketFateReport>* hidl_fates) {
-    if (!hidl_fates) {
-        return false;
-    }
-    *hidl_fates = {};
-    for (const auto& legacy_fate : legacy_fates) {
-        WifiDebugRxPacketFateReport hidl_fate;
-        if (!convertLegacyDebugRxPacketFateToHidl(legacy_fate, &hidl_fate)) {
-            return false;
-        }
-        hidl_fates->push_back(hidl_fate);
-    }
-    return true;
-}
-
-bool convertLegacyLinkLayerRadioStatsToHidl(
-    const legacy_hal::LinkLayerRadioStats& legacy_radio_stat,
-    V1_5::StaLinkLayerRadioStats* hidl_radio_stat) {
-    if (!hidl_radio_stat) {
-        return false;
-    }
-    *hidl_radio_stat = {};
-
-    hidl_radio_stat->radioId = legacy_radio_stat.stats.radio;
-    hidl_radio_stat->V1_3.V1_0.onTimeInMs = legacy_radio_stat.stats.on_time;
-    hidl_radio_stat->V1_3.V1_0.txTimeInMs = legacy_radio_stat.stats.tx_time;
-    hidl_radio_stat->V1_3.V1_0.rxTimeInMs = legacy_radio_stat.stats.rx_time;
-    hidl_radio_stat->V1_3.V1_0.onTimeInMsForScan =
-        legacy_radio_stat.stats.on_time_scan;
-    hidl_radio_stat->V1_3.V1_0.txTimeInMsPerLevel =
-        legacy_radio_stat.tx_time_per_levels;
-    hidl_radio_stat->V1_3.onTimeInMsForNanScan =
-        legacy_radio_stat.stats.on_time_nbd;
-    hidl_radio_stat->V1_3.onTimeInMsForBgScan =
-        legacy_radio_stat.stats.on_time_gscan;
-    hidl_radio_stat->V1_3.onTimeInMsForRoamScan =
-        legacy_radio_stat.stats.on_time_roam_scan;
-    hidl_radio_stat->V1_3.onTimeInMsForPnoScan =
-        legacy_radio_stat.stats.on_time_pno_scan;
-    hidl_radio_stat->V1_3.onTimeInMsForHs20Scan =
-        legacy_radio_stat.stats.on_time_hs20;
-
-    std::vector<V1_3::WifiChannelStats> hidl_channel_stats;
-
-    for (const auto& channel_stat : legacy_radio_stat.channel_stats) {
-        V1_3::WifiChannelStats hidl_channel_stat;
-        hidl_channel_stat.onTimeInMs = channel_stat.on_time;
-        hidl_channel_stat.ccaBusyTimeInMs = channel_stat.cca_busy_time;
-        /*
-         * TODO once b/119142899 is fixed,
-         * replace below code with convertLegacyWifiChannelInfoToHidl()
-         */
-        hidl_channel_stat.channel.width = WifiChannelWidthInMhz::WIDTH_20;
-        hidl_channel_stat.channel.centerFreq = channel_stat.channel.center_freq;
-        hidl_channel_stat.channel.centerFreq0 =
-            channel_stat.channel.center_freq0;
-        hidl_channel_stat.channel.centerFreq1 =
-            channel_stat.channel.center_freq1;
-        hidl_channel_stats.push_back(hidl_channel_stat);
-    }
-
-    hidl_radio_stat->V1_3.channelStats = hidl_channel_stats;
-
-    return true;
-}
-
-bool convertLegacyLinkLayerStatsToHidl(
-    const legacy_hal::LinkLayerStats& legacy_stats,
-    StaLinkLayerStats* hidl_stats) {
-    if (!hidl_stats) {
-        return false;
-    }
-    *hidl_stats = {};
-    // iface legacy_stats conversion.
-    hidl_stats->iface.V1_0.beaconRx = legacy_stats.iface.beacon_rx;
-    hidl_stats->iface.V1_0.avgRssiMgmt = legacy_stats.iface.rssi_mgmt;
-    hidl_stats->iface.V1_0.wmeBePktStats.rxMpdu =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].rx_mpdu;
-    hidl_stats->iface.V1_0.wmeBePktStats.txMpdu =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].tx_mpdu;
-    hidl_stats->iface.V1_0.wmeBePktStats.lostMpdu =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].mpdu_lost;
-    hidl_stats->iface.V1_0.wmeBePktStats.retries =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].retries;
-    hidl_stats->iface.wmeBeContentionTimeStats.contentionTimeMinInUsec =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].contention_time_min;
-    hidl_stats->iface.wmeBeContentionTimeStats.contentionTimeMaxInUsec =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].contention_time_max;
-    hidl_stats->iface.wmeBeContentionTimeStats.contentionTimeAvgInUsec =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].contention_time_avg;
-    hidl_stats->iface.wmeBeContentionTimeStats.contentionNumSamples =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].contention_num_samples;
-    hidl_stats->iface.V1_0.wmeBkPktStats.rxMpdu =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].rx_mpdu;
-    hidl_stats->iface.V1_0.wmeBkPktStats.txMpdu =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].tx_mpdu;
-    hidl_stats->iface.V1_0.wmeBkPktStats.lostMpdu =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].mpdu_lost;
-    hidl_stats->iface.V1_0.wmeBkPktStats.retries =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].retries;
-    hidl_stats->iface.wmeBkContentionTimeStats.contentionTimeMinInUsec =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].contention_time_min;
-    hidl_stats->iface.wmeBkContentionTimeStats.contentionTimeMaxInUsec =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].contention_time_max;
-    hidl_stats->iface.wmeBkContentionTimeStats.contentionTimeAvgInUsec =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].contention_time_avg;
-    hidl_stats->iface.wmeBkContentionTimeStats.contentionNumSamples =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].contention_num_samples;
-    hidl_stats->iface.V1_0.wmeViPktStats.rxMpdu =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].rx_mpdu;
-    hidl_stats->iface.V1_0.wmeViPktStats.txMpdu =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].tx_mpdu;
-    hidl_stats->iface.V1_0.wmeViPktStats.lostMpdu =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].mpdu_lost;
-    hidl_stats->iface.V1_0.wmeViPktStats.retries =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].retries;
-    hidl_stats->iface.wmeViContentionTimeStats.contentionTimeMinInUsec =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].contention_time_min;
-    hidl_stats->iface.wmeViContentionTimeStats.contentionTimeMaxInUsec =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].contention_time_max;
-    hidl_stats->iface.wmeViContentionTimeStats.contentionTimeAvgInUsec =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].contention_time_avg;
-    hidl_stats->iface.wmeViContentionTimeStats.contentionNumSamples =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].contention_num_samples;
-    hidl_stats->iface.V1_0.wmeVoPktStats.rxMpdu =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].rx_mpdu;
-    hidl_stats->iface.V1_0.wmeVoPktStats.txMpdu =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].tx_mpdu;
-    hidl_stats->iface.V1_0.wmeVoPktStats.lostMpdu =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].mpdu_lost;
-    hidl_stats->iface.V1_0.wmeVoPktStats.retries =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].retries;
-    hidl_stats->iface.wmeVoContentionTimeStats.contentionTimeMinInUsec =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].contention_time_min;
-    hidl_stats->iface.wmeVoContentionTimeStats.contentionTimeMaxInUsec =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].contention_time_max;
-    hidl_stats->iface.wmeVoContentionTimeStats.contentionTimeAvgInUsec =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].contention_time_avg;
-    hidl_stats->iface.wmeVoContentionTimeStats.contentionNumSamples =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].contention_num_samples;
-    hidl_stats->iface.timeSliceDutyCycleInPercent =
-        legacy_stats.iface.info.time_slicing_duty_cycle_percent;
-    // peer info legacy_stats conversion.
-    std::vector<StaPeerInfo> hidl_peers_info_stats;
-    for (const auto& legacy_peer_info_stats : legacy_stats.peers) {
-        StaPeerInfo hidl_peer_info_stats;
-        if (!convertLegacyPeerInfoStatsToHidl(legacy_peer_info_stats,
-                                              &hidl_peer_info_stats)) {
-            return false;
-        }
-        hidl_peers_info_stats.push_back(hidl_peer_info_stats);
-    }
-    hidl_stats->iface.peers = hidl_peers_info_stats;
-    // radio legacy_stats conversion.
-    std::vector<V1_5::StaLinkLayerRadioStats> hidl_radios_stats;
-    for (const auto& legacy_radio_stats : legacy_stats.radios) {
-        V1_5::StaLinkLayerRadioStats hidl_radio_stats;
-        if (!convertLegacyLinkLayerRadioStatsToHidl(legacy_radio_stats,
-                                                    &hidl_radio_stats)) {
-            return false;
-        }
-        hidl_radios_stats.push_back(hidl_radio_stats);
-    }
-    hidl_stats->radios = hidl_radios_stats;
-    // Timestamp in the HAL wrapper here since it's not provided in the legacy
-    // HAL API.
-    hidl_stats->timeStampInMs = uptimeMillis();
-    return true;
-}
-
-bool convertLegacyPeerInfoStatsToHidl(
-    const legacy_hal::WifiPeerInfo& legacy_peer_info_stats,
-    StaPeerInfo* hidl_peer_info_stats) {
-    if (!hidl_peer_info_stats) {
-        return false;
-    }
-    *hidl_peer_info_stats = {};
-    hidl_peer_info_stats->staCount =
-        legacy_peer_info_stats.peer_info.bssload.sta_count;
-    hidl_peer_info_stats->chanUtil =
-        legacy_peer_info_stats.peer_info.bssload.chan_util;
-
-    std::vector<StaRateStat> hidlRateStats;
-    for (const auto& legacy_rate_stats : legacy_peer_info_stats.rate_stats) {
-        StaRateStat rateStat;
-        if (!convertLegacyWifiRateInfoToHidl(legacy_rate_stats.rate,
-                                             &rateStat.rateInfo)) {
-            return false;
-        }
-        rateStat.txMpdu = legacy_rate_stats.tx_mpdu;
-        rateStat.rxMpdu = legacy_rate_stats.rx_mpdu;
-        rateStat.mpduLost = legacy_rate_stats.mpdu_lost;
-        rateStat.retries = legacy_rate_stats.retries;
-        hidlRateStats.push_back(rateStat);
-    }
-    hidl_peer_info_stats->rateStats = hidlRateStats;
-    return true;
-}
-
-bool convertLegacyRoamingCapabilitiesToHidl(
-    const legacy_hal::wifi_roaming_capabilities& legacy_caps,
-    StaRoamingCapabilities* hidl_caps) {
-    if (!hidl_caps) {
-        return false;
-    }
-    *hidl_caps = {};
-    hidl_caps->maxBlacklistSize = legacy_caps.max_blacklist_size;
-    hidl_caps->maxWhitelistSize = legacy_caps.max_whitelist_size;
-    return true;
-}
-
-bool convertHidlRoamingConfigToLegacy(
-    const StaRoamingConfig& hidl_config,
-    legacy_hal::wifi_roaming_config* legacy_config) {
-    if (!legacy_config) {
-        return false;
-    }
-    *legacy_config = {};
-    if (hidl_config.bssidBlacklist.size() > MAX_BLACKLIST_BSSID ||
-        hidl_config.ssidWhitelist.size() > MAX_WHITELIST_SSID) {
-        return false;
-    }
-    legacy_config->num_blacklist_bssid = hidl_config.bssidBlacklist.size();
-    uint32_t i = 0;
-    for (const auto& bssid : hidl_config.bssidBlacklist) {
-        CHECK(bssid.size() == sizeof(legacy_hal::mac_addr));
-        memcpy(legacy_config->blacklist_bssid[i++], bssid.data(), bssid.size());
-    }
-    legacy_config->num_whitelist_ssid = hidl_config.ssidWhitelist.size();
-    i = 0;
-    for (const auto& ssid : hidl_config.ssidWhitelist) {
-        CHECK(ssid.size() <= sizeof(legacy_hal::ssid_t::ssid_str));
-        legacy_config->whitelist_ssid[i].length = ssid.size();
-        memcpy(legacy_config->whitelist_ssid[i].ssid_str, ssid.data(),
-               ssid.size());
-        i++;
-    }
-    return true;
-}
-
-legacy_hal::fw_roaming_state_t convertHidlRoamingStateToLegacy(
-    StaRoamingState state) {
-    switch (state) {
-        case StaRoamingState::ENABLED:
-            return legacy_hal::ROAMING_ENABLE;
-        case StaRoamingState::DISABLED:
-            return legacy_hal::ROAMING_DISABLE;
-    };
-    CHECK(false);
-}
-
-legacy_hal::NanMatchAlg convertHidlNanMatchAlgToLegacy(NanMatchAlg type) {
-    switch (type) {
-        case NanMatchAlg::MATCH_ONCE:
-            return legacy_hal::NAN_MATCH_ALG_MATCH_ONCE;
-        case NanMatchAlg::MATCH_CONTINUOUS:
-            return legacy_hal::NAN_MATCH_ALG_MATCH_CONTINUOUS;
-        case NanMatchAlg::MATCH_NEVER:
-            return legacy_hal::NAN_MATCH_ALG_MATCH_NEVER;
-    }
-    CHECK(false);
-}
-
-legacy_hal::NanPublishType convertHidlNanPublishTypeToLegacy(
-    NanPublishType type) {
-    switch (type) {
-        case NanPublishType::UNSOLICITED:
-            return legacy_hal::NAN_PUBLISH_TYPE_UNSOLICITED;
-        case NanPublishType::SOLICITED:
-            return legacy_hal::NAN_PUBLISH_TYPE_SOLICITED;
-        case NanPublishType::UNSOLICITED_SOLICITED:
-            return legacy_hal::NAN_PUBLISH_TYPE_UNSOLICITED_SOLICITED;
-    }
-    CHECK(false);
-}
-
-legacy_hal::NanTxType convertHidlNanTxTypeToLegacy(NanTxType type) {
-    switch (type) {
-        case NanTxType::BROADCAST:
-            return legacy_hal::NAN_TX_TYPE_BROADCAST;
-        case NanTxType::UNICAST:
-            return legacy_hal::NAN_TX_TYPE_UNICAST;
-    }
-    CHECK(false);
-}
-
-legacy_hal::NanSubscribeType convertHidlNanSubscribeTypeToLegacy(
-    NanSubscribeType type) {
-    switch (type) {
-        case NanSubscribeType::PASSIVE:
-            return legacy_hal::NAN_SUBSCRIBE_TYPE_PASSIVE;
-        case NanSubscribeType::ACTIVE:
-            return legacy_hal::NAN_SUBSCRIBE_TYPE_ACTIVE;
-    }
-    CHECK(false);
-}
-
-legacy_hal::NanSRFType convertHidlNanSrfTypeToLegacy(NanSrfType type) {
-    switch (type) {
-        case NanSrfType::BLOOM_FILTER:
-            return legacy_hal::NAN_SRF_ATTR_BLOOM_FILTER;
-        case NanSrfType::PARTIAL_MAC_ADDR:
-            return legacy_hal::NAN_SRF_ATTR_PARTIAL_MAC_ADDR;
-    }
-    CHECK(false);
-}
-
-legacy_hal::NanDataPathChannelCfg convertHidlNanDataPathChannelCfgToLegacy(
-    NanDataPathChannelCfg type) {
-    switch (type) {
-        case NanDataPathChannelCfg::CHANNEL_NOT_REQUESTED:
-            return legacy_hal::NAN_DP_CHANNEL_NOT_REQUESTED;
-        case NanDataPathChannelCfg::REQUEST_CHANNEL_SETUP:
-            return legacy_hal::NAN_DP_REQUEST_CHANNEL_SETUP;
-        case NanDataPathChannelCfg::FORCE_CHANNEL_SETUP:
-            return legacy_hal::NAN_DP_FORCE_CHANNEL_SETUP;
-    }
-    CHECK(false);
-}
-
-NanStatusType convertLegacyNanStatusTypeToHidl(legacy_hal::NanStatusType type) {
-    switch (type) {
-        case legacy_hal::NAN_STATUS_SUCCESS:
-            return NanStatusType::SUCCESS;
-        case legacy_hal::NAN_STATUS_INTERNAL_FAILURE:
-            return NanStatusType::INTERNAL_FAILURE;
-        case legacy_hal::NAN_STATUS_PROTOCOL_FAILURE:
-            return NanStatusType::PROTOCOL_FAILURE;
-        case legacy_hal::NAN_STATUS_INVALID_PUBLISH_SUBSCRIBE_ID:
-            return NanStatusType::INVALID_SESSION_ID;
-        case legacy_hal::NAN_STATUS_NO_RESOURCE_AVAILABLE:
-            return NanStatusType::NO_RESOURCES_AVAILABLE;
-        case legacy_hal::NAN_STATUS_INVALID_PARAM:
-            return NanStatusType::INVALID_ARGS;
-        case legacy_hal::NAN_STATUS_INVALID_REQUESTOR_INSTANCE_ID:
-            return NanStatusType::INVALID_PEER_ID;
-        case legacy_hal::NAN_STATUS_INVALID_NDP_ID:
-            return NanStatusType::INVALID_NDP_ID;
-        case legacy_hal::NAN_STATUS_NAN_NOT_ALLOWED:
-            return NanStatusType::NAN_NOT_ALLOWED;
-        case legacy_hal::NAN_STATUS_NO_OTA_ACK:
-            return NanStatusType::NO_OTA_ACK;
-        case legacy_hal::NAN_STATUS_ALREADY_ENABLED:
-            return NanStatusType::ALREADY_ENABLED;
-        case legacy_hal::NAN_STATUS_FOLLOWUP_QUEUE_FULL:
-            return NanStatusType::FOLLOWUP_TX_QUEUE_FULL;
-        case legacy_hal::NAN_STATUS_UNSUPPORTED_CONCURRENCY_NAN_DISABLED:
-            return NanStatusType::UNSUPPORTED_CONCURRENCY_NAN_DISABLED;
-    }
-    CHECK(false);
-}
-
-void convertToWifiNanStatus(legacy_hal::NanStatusType type, const char* str,
-                            size_t max_len, WifiNanStatus* wifiNanStatus) {
-    wifiNanStatus->status = convertLegacyNanStatusTypeToHidl(type);
-    wifiNanStatus->description = safeConvertChar(str, max_len);
-}
-
-bool convertHidlNanEnableRequestToLegacy(
-    const V1_4::NanEnableRequest& hidl_request,
-    legacy_hal::NanEnableRequest* legacy_request) {
-    if (!legacy_request) {
-        LOG(ERROR)
-            << "convertHidlNanEnableRequestToLegacy: null legacy_request";
-        return false;
-    }
-    *legacy_request = {};
-
-    legacy_request->config_2dot4g_support = 1;
-    legacy_request->support_2dot4g_val =
-        hidl_request.operateInBand[(size_t)NanBandIndex::NAN_BAND_24GHZ];
-    legacy_request->config_support_5g = 1;
-    legacy_request->support_5g_val =
-        hidl_request.operateInBand[(size_t)NanBandIndex::NAN_BAND_5GHZ];
-    legacy_request->config_hop_count_limit = 1;
-    legacy_request->hop_count_limit_val = hidl_request.hopCountMax;
-    legacy_request->master_pref = hidl_request.configParams.masterPref;
-    legacy_request->discovery_indication_cfg = 0;
-    legacy_request->discovery_indication_cfg |=
-        hidl_request.configParams.disableDiscoveryAddressChangeIndication ? 0x1
-                                                                          : 0x0;
-    legacy_request->discovery_indication_cfg |=
-        hidl_request.configParams.disableStartedClusterIndication ? 0x2 : 0x0;
-    legacy_request->discovery_indication_cfg |=
-        hidl_request.configParams.disableJoinedClusterIndication ? 0x4 : 0x0;
-    legacy_request->config_sid_beacon = 1;
-    if (hidl_request.configParams.numberOfPublishServiceIdsInBeacon > 127) {
-        LOG(ERROR) << "convertHidlNanEnableRequestToLegacy: "
-                      "numberOfPublishServiceIdsInBeacon > 127";
-        return false;
-    }
-    legacy_request->sid_beacon_val =
-        (hidl_request.configParams.includePublishServiceIdsInBeacon ? 0x1
-                                                                    : 0x0) |
-        (hidl_request.configParams.numberOfPublishServiceIdsInBeacon << 1);
-    legacy_request->config_subscribe_sid_beacon = 1;
-    if (hidl_request.configParams.numberOfSubscribeServiceIdsInBeacon > 127) {
-        LOG(ERROR) << "convertHidlNanEnableRequestToLegacy: "
-                      "numberOfSubscribeServiceIdsInBeacon > 127";
-        return false;
-    }
-    legacy_request->subscribe_sid_beacon_val =
-        (hidl_request.configParams.includeSubscribeServiceIdsInBeacon ? 0x1
-                                                                      : 0x0) |
-        (hidl_request.configParams.numberOfSubscribeServiceIdsInBeacon << 1);
-    legacy_request->config_rssi_window_size = 1;
-    legacy_request->rssi_window_size_val =
-        hidl_request.configParams.rssiWindowSize;
-    legacy_request->config_disc_mac_addr_randomization = 1;
-    legacy_request->disc_mac_addr_rand_interval_sec =
-        hidl_request.configParams.macAddressRandomizationIntervalSec;
-    legacy_request->config_2dot4g_rssi_close = 1;
-    if (hidl_request.configParams.bandSpecificConfig.size() != 3) {
-        LOG(ERROR) << "convertHidlNanEnableRequestToLegacy: "
-                      "bandSpecificConfig.size() != 3";
-        return false;
-    }
-    legacy_request->rssi_close_2dot4g_val =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
-            .rssiClose;
-    legacy_request->config_2dot4g_rssi_middle = 1;
-    legacy_request->rssi_middle_2dot4g_val =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
-            .rssiMiddle;
-    legacy_request->config_2dot4g_rssi_proximity = 1;
-    legacy_request->rssi_proximity_2dot4g_val =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
-            .rssiCloseProximity;
-    legacy_request->config_scan_params = 1;
-    legacy_request->scan_params_val
-        .dwell_time[legacy_hal::NAN_CHANNEL_24G_BAND] =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
-            .dwellTimeMs;
-    legacy_request->scan_params_val
-        .scan_period[legacy_hal::NAN_CHANNEL_24G_BAND] =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
-            .scanPeriodSec;
-    legacy_request->config_dw.config_2dot4g_dw_band =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
-            .validDiscoveryWindowIntervalVal;
-    legacy_request->config_dw.dw_2dot4g_interval_val =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
-            .discoveryWindowIntervalVal;
-    legacy_request->config_5g_rssi_close = 1;
-    legacy_request->rssi_close_5g_val =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .rssiClose;
-    legacy_request->config_5g_rssi_middle = 1;
-    legacy_request->rssi_middle_5g_val =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .rssiMiddle;
-    legacy_request->config_5g_rssi_close_proximity = 1;
-    legacy_request->rssi_close_proximity_5g_val =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .rssiCloseProximity;
-    legacy_request->scan_params_val
-        .dwell_time[legacy_hal::NAN_CHANNEL_5G_BAND_LOW] =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .dwellTimeMs;
-    legacy_request->scan_params_val
-        .scan_period[legacy_hal::NAN_CHANNEL_5G_BAND_LOW] =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .scanPeriodSec;
-    legacy_request->scan_params_val
-        .dwell_time[legacy_hal::NAN_CHANNEL_5G_BAND_HIGH] =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .dwellTimeMs;
-    legacy_request->scan_params_val
-        .scan_period[legacy_hal::NAN_CHANNEL_5G_BAND_HIGH] =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .scanPeriodSec;
-    legacy_request->config_dw.config_5g_dw_band =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .validDiscoveryWindowIntervalVal;
-    legacy_request->config_dw.dw_5g_interval_val =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .discoveryWindowIntervalVal;
-    if (hidl_request.debugConfigs.validClusterIdVals) {
-        legacy_request->cluster_low =
-            hidl_request.debugConfigs.clusterIdBottomRangeVal;
-        legacy_request->cluster_high =
-            hidl_request.debugConfigs.clusterIdTopRangeVal;
-    } else {  // need 'else' since not configurable in legacy HAL
-        legacy_request->cluster_low = 0x0000;
-        legacy_request->cluster_high = 0xFFFF;
-    }
-    legacy_request->config_intf_addr =
-        hidl_request.debugConfigs.validIntfAddrVal;
-    memcpy(legacy_request->intf_addr_val,
-           hidl_request.debugConfigs.intfAddrVal.data(), 6);
-    legacy_request->config_oui = hidl_request.debugConfigs.validOuiVal;
-    legacy_request->oui_val = hidl_request.debugConfigs.ouiVal;
-    legacy_request->config_random_factor_force =
-        hidl_request.debugConfigs.validRandomFactorForceVal;
-    legacy_request->random_factor_force_val =
-        hidl_request.debugConfigs.randomFactorForceVal;
-    legacy_request->config_hop_count_force =
-        hidl_request.debugConfigs.validHopCountForceVal;
-    legacy_request->hop_count_force_val =
-        hidl_request.debugConfigs.hopCountForceVal;
-    legacy_request->config_24g_channel =
-        hidl_request.debugConfigs.validDiscoveryChannelVal;
-    legacy_request->channel_24g_val =
-        hidl_request.debugConfigs
-            .discoveryChannelMhzVal[(size_t)NanBandIndex::NAN_BAND_24GHZ];
-    legacy_request->config_5g_channel =
-        hidl_request.debugConfigs.validDiscoveryChannelVal;
-    legacy_request->channel_5g_val =
-        hidl_request.debugConfigs
-            .discoveryChannelMhzVal[(size_t)NanBandIndex::NAN_BAND_5GHZ];
-    legacy_request->config_2dot4g_beacons =
-        hidl_request.debugConfigs.validUseBeaconsInBandVal;
-    legacy_request->beacon_2dot4g_val =
-        hidl_request.debugConfigs
-            .useBeaconsInBandVal[(size_t)NanBandIndex::NAN_BAND_24GHZ];
-    legacy_request->config_5g_beacons =
-        hidl_request.debugConfigs.validUseBeaconsInBandVal;
-    legacy_request->beacon_5g_val =
-        hidl_request.debugConfigs
-            .useBeaconsInBandVal[(size_t)NanBandIndex::NAN_BAND_5GHZ];
-    legacy_request->config_2dot4g_sdf =
-        hidl_request.debugConfigs.validUseSdfInBandVal;
-    legacy_request->sdf_2dot4g_val =
-        hidl_request.debugConfigs
-            .useSdfInBandVal[(size_t)NanBandIndex::NAN_BAND_24GHZ];
-    legacy_request->config_5g_sdf =
-        hidl_request.debugConfigs.validUseSdfInBandVal;
-    legacy_request->sdf_5g_val =
-        hidl_request.debugConfigs
-            .useSdfInBandVal[(size_t)NanBandIndex::NAN_BAND_5GHZ];
-
-    /* TODO: b/145609058
-     * Missing updates needed to legacy_hal::NanEnableRequest and conversion to
-     * it for 6GHz band */
-
-    return true;
-}
-
-bool convertHidlNanEnableRequest_1_4ToLegacy(
-    const V1_4::NanEnableRequest& hidl_request1,
-    const NanConfigRequestSupplemental& hidl_request2,
-    legacy_hal::NanEnableRequest* legacy_request) {
-    if (!legacy_request) {
-        LOG(ERROR)
-            << "convertHidlNanEnableRequest_1_4ToLegacy: null legacy_request";
-        return false;
-    }
-
-    *legacy_request = {};
-    if (!convertHidlNanEnableRequestToLegacy(hidl_request1, legacy_request)) {
-        return false;
-    }
-
-    legacy_request->config_discovery_beacon_int = 1;
-    legacy_request->discovery_beacon_interval =
-        hidl_request2.V1_2.discoveryBeaconIntervalMs;
-    legacy_request->config_nss = 1;
-    legacy_request->nss = hidl_request2.V1_2.numberOfSpatialStreamsInDiscovery;
-    legacy_request->config_dw_early_termination = 1;
-    legacy_request->enable_dw_termination =
-        hidl_request2.V1_2.enableDiscoveryWindowEarlyTermination;
-    legacy_request->config_enable_ranging = 1;
-    legacy_request->enable_ranging = hidl_request2.V1_2.enableRanging;
-
-    return true;
-}
-
-bool convertHidlNanEnableRequest_1_5ToLegacy(
-    const V1_4::NanEnableRequest& hidl_request1,
-    const NanConfigRequestSupplemental& hidl_request2,
-    legacy_hal::NanEnableRequest* legacy_request) {
-    if (!legacy_request) {
-        LOG(ERROR)
-            << "convertHidlNanEnableRequest_1_5ToLegacy: null legacy_request";
-        return false;
-    }
-
-    *legacy_request = {};
-    if (!convertHidlNanEnableRequest_1_4ToLegacy(hidl_request1, hidl_request2,
-                                                 legacy_request)) {
-        return false;
-    }
-
-    legacy_request->config_enable_instant_mode = 1;
-    legacy_request->enable_instant_mode =
-        hidl_request2.enableInstantCommunicationMode;
-
-    return true;
-}
-
-bool convertHidlNanConfigRequest_1_5ToLegacy(
-    const V1_4::NanConfigRequest& hidl_request1,
-    const NanConfigRequestSupplemental& hidl_request2,
-    legacy_hal::NanConfigRequest* legacy_request) {
-    if (!legacy_request) {
-        LOG(ERROR)
-            << "convertHidlNanConfigRequest_1_5ToLegacy: null legacy_request";
-        return false;
-    }
-
-    *legacy_request = {};
-    if (!convertHidlNanConfigRequest_1_4ToLegacy(hidl_request1, hidl_request2,
-                                                 legacy_request)) {
-        return false;
-    }
-
-    legacy_request->config_enable_instant_mode = 1;
-    legacy_request->enable_instant_mode =
-        hidl_request2.enableInstantCommunicationMode;
-
-    return true;
-}
-
-bool convertHidlNanPublishRequestToLegacy(
-    const NanPublishRequest& hidl_request,
-    legacy_hal::NanPublishRequest* legacy_request) {
-    if (!legacy_request) {
-        LOG(ERROR)
-            << "convertHidlNanPublishRequestToLegacy: null legacy_request";
-        return false;
-    }
-    *legacy_request = {};
-
-    legacy_request->publish_id = hidl_request.baseConfigs.sessionId;
-    legacy_request->ttl = hidl_request.baseConfigs.ttlSec;
-    legacy_request->period = hidl_request.baseConfigs.discoveryWindowPeriod;
-    legacy_request->publish_count = hidl_request.baseConfigs.discoveryCount;
-    legacy_request->service_name_len =
-        hidl_request.baseConfigs.serviceName.size();
-    if (legacy_request->service_name_len > NAN_MAX_SERVICE_NAME_LEN) {
-        LOG(ERROR) << "convertHidlNanPublishRequestToLegacy: service_name_len "
-                      "too large";
-        return false;
-    }
-    memcpy(legacy_request->service_name,
-           hidl_request.baseConfigs.serviceName.data(),
-           legacy_request->service_name_len);
-    legacy_request->publish_match_indicator = convertHidlNanMatchAlgToLegacy(
-        hidl_request.baseConfigs.discoveryMatchIndicator);
-    legacy_request->service_specific_info_len =
-        hidl_request.baseConfigs.serviceSpecificInfo.size();
-    if (legacy_request->service_specific_info_len >
-        NAN_MAX_SERVICE_SPECIFIC_INFO_LEN) {
-        LOG(ERROR) << "convertHidlNanPublishRequestToLegacy: "
-                      "service_specific_info_len too large";
-        return false;
-    }
-    memcpy(legacy_request->service_specific_info,
-           hidl_request.baseConfigs.serviceSpecificInfo.data(),
-           legacy_request->service_specific_info_len);
-    legacy_request->sdea_service_specific_info_len =
-        hidl_request.baseConfigs.extendedServiceSpecificInfo.size();
-    if (legacy_request->sdea_service_specific_info_len >
-        NAN_MAX_SDEA_SERVICE_SPECIFIC_INFO_LEN) {
-        LOG(ERROR) << "convertHidlNanPublishRequestToLegacy: "
-                      "sdea_service_specific_info_len too large";
-        return false;
-    }
-    memcpy(legacy_request->sdea_service_specific_info,
-           hidl_request.baseConfigs.extendedServiceSpecificInfo.data(),
-           legacy_request->sdea_service_specific_info_len);
-    legacy_request->rx_match_filter_len =
-        hidl_request.baseConfigs.rxMatchFilter.size();
-    if (legacy_request->rx_match_filter_len > NAN_MAX_MATCH_FILTER_LEN) {
-        LOG(ERROR) << "convertHidlNanPublishRequestToLegacy: "
-                      "rx_match_filter_len too large";
-        return false;
-    }
-    memcpy(legacy_request->rx_match_filter,
-           hidl_request.baseConfigs.rxMatchFilter.data(),
-           legacy_request->rx_match_filter_len);
-    legacy_request->tx_match_filter_len =
-        hidl_request.baseConfigs.txMatchFilter.size();
-    if (legacy_request->tx_match_filter_len > NAN_MAX_MATCH_FILTER_LEN) {
-        LOG(ERROR) << "convertHidlNanPublishRequestToLegacy: "
-                      "tx_match_filter_len too large";
-        return false;
-    }
-    memcpy(legacy_request->tx_match_filter,
-           hidl_request.baseConfigs.txMatchFilter.data(),
-           legacy_request->tx_match_filter_len);
-    legacy_request->rssi_threshold_flag =
-        hidl_request.baseConfigs.useRssiThreshold;
-    legacy_request->recv_indication_cfg = 0;
-    legacy_request->recv_indication_cfg |=
-        hidl_request.baseConfigs.disableDiscoveryTerminationIndication ? 0x1
-                                                                       : 0x0;
-    legacy_request->recv_indication_cfg |=
-        hidl_request.baseConfigs.disableMatchExpirationIndication ? 0x2 : 0x0;
-    legacy_request->recv_indication_cfg |=
-        hidl_request.baseConfigs.disableFollowupReceivedIndication ? 0x4 : 0x0;
-    legacy_request->recv_indication_cfg |= 0x8;
-    legacy_request->cipher_type =
-        (unsigned int)hidl_request.baseConfigs.securityConfig.cipherType;
-    if (hidl_request.baseConfigs.securityConfig.securityType ==
-        NanDataPathSecurityType::PMK) {
-        legacy_request->key_info.key_type =
-            legacy_hal::NAN_SECURITY_KEY_INPUT_PMK;
-        legacy_request->key_info.body.pmk_info.pmk_len =
-            hidl_request.baseConfigs.securityConfig.pmk.size();
-        if (legacy_request->key_info.body.pmk_info.pmk_len !=
-            NAN_PMK_INFO_LEN) {
-            LOG(ERROR)
-                << "convertHidlNanPublishRequestToLegacy: invalid pmk_len";
-            return false;
-        }
-        memcpy(legacy_request->key_info.body.pmk_info.pmk,
-               hidl_request.baseConfigs.securityConfig.pmk.data(),
-               legacy_request->key_info.body.pmk_info.pmk_len);
-    }
-    if (hidl_request.baseConfigs.securityConfig.securityType ==
-        NanDataPathSecurityType::PASSPHRASE) {
-        legacy_request->key_info.key_type =
-            legacy_hal::NAN_SECURITY_KEY_INPUT_PASSPHRASE;
-        legacy_request->key_info.body.passphrase_info.passphrase_len =
-            hidl_request.baseConfigs.securityConfig.passphrase.size();
-        if (legacy_request->key_info.body.passphrase_info.passphrase_len <
-            NAN_SECURITY_MIN_PASSPHRASE_LEN) {
-            LOG(ERROR) << "convertHidlNanPublishRequestToLegacy: "
-                          "passphrase_len too small";
-            return false;
-        }
-        if (legacy_request->key_info.body.passphrase_info.passphrase_len >
-            NAN_SECURITY_MAX_PASSPHRASE_LEN) {
-            LOG(ERROR) << "convertHidlNanPublishRequestToLegacy: "
-                          "passphrase_len too large";
-            return false;
-        }
-        memcpy(legacy_request->key_info.body.passphrase_info.passphrase,
-               hidl_request.baseConfigs.securityConfig.passphrase.data(),
-               legacy_request->key_info.body.passphrase_info.passphrase_len);
-    }
-    legacy_request->sdea_params.security_cfg =
-        (hidl_request.baseConfigs.securityConfig.securityType !=
-         NanDataPathSecurityType::OPEN)
-            ? legacy_hal::NAN_DP_CONFIG_SECURITY
-            : legacy_hal::NAN_DP_CONFIG_NO_SECURITY;
-    legacy_request->sdea_params.ranging_state =
-        hidl_request.baseConfigs.rangingRequired
-            ? legacy_hal::NAN_RANGING_ENABLE
-            : legacy_hal::NAN_RANGING_DISABLE;
-    legacy_request->ranging_cfg.ranging_interval_msec =
-        hidl_request.baseConfigs.rangingIntervalMsec;
-    legacy_request->ranging_cfg.config_ranging_indications =
-        hidl_request.baseConfigs.configRangingIndications;
-    legacy_request->ranging_cfg.distance_ingress_mm =
-        hidl_request.baseConfigs.distanceIngressCm * 10;
-    legacy_request->ranging_cfg.distance_egress_mm =
-        hidl_request.baseConfigs.distanceEgressCm * 10;
-    legacy_request->ranging_auto_response =
-        hidl_request.baseConfigs.rangingRequired
-            ? legacy_hal::NAN_RANGING_AUTO_RESPONSE_ENABLE
-            : legacy_hal::NAN_RANGING_AUTO_RESPONSE_DISABLE;
-    legacy_request->sdea_params.range_report =
-        legacy_hal::NAN_DISABLE_RANGE_REPORT;
-    legacy_request->publish_type =
-        convertHidlNanPublishTypeToLegacy(hidl_request.publishType);
-    legacy_request->tx_type = convertHidlNanTxTypeToLegacy(hidl_request.txType);
-    legacy_request->service_responder_policy =
-        hidl_request.autoAcceptDataPathRequests
-            ? legacy_hal::NAN_SERVICE_ACCEPT_POLICY_ALL
-            : legacy_hal::NAN_SERVICE_ACCEPT_POLICY_NONE;
-
-    return true;
-}
-
-bool convertHidlNanSubscribeRequestToLegacy(
-    const NanSubscribeRequest& hidl_request,
-    legacy_hal::NanSubscribeRequest* legacy_request) {
-    if (!legacy_request) {
-        LOG(ERROR)
-            << "convertHidlNanSubscribeRequestToLegacy: legacy_request is null";
-        return false;
-    }
-    *legacy_request = {};
-
-    legacy_request->subscribe_id = hidl_request.baseConfigs.sessionId;
-    legacy_request->ttl = hidl_request.baseConfigs.ttlSec;
-    legacy_request->period = hidl_request.baseConfigs.discoveryWindowPeriod;
-    legacy_request->subscribe_count = hidl_request.baseConfigs.discoveryCount;
-    legacy_request->service_name_len =
-        hidl_request.baseConfigs.serviceName.size();
-    if (legacy_request->service_name_len > NAN_MAX_SERVICE_NAME_LEN) {
-        LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
-                      "service_name_len too large";
-        return false;
-    }
-    memcpy(legacy_request->service_name,
-           hidl_request.baseConfigs.serviceName.data(),
-           legacy_request->service_name_len);
-    legacy_request->subscribe_match_indicator = convertHidlNanMatchAlgToLegacy(
-        hidl_request.baseConfigs.discoveryMatchIndicator);
-    legacy_request->service_specific_info_len =
-        hidl_request.baseConfigs.serviceSpecificInfo.size();
-    if (legacy_request->service_specific_info_len >
-        NAN_MAX_SERVICE_SPECIFIC_INFO_LEN) {
-        LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
-                      "service_specific_info_len too large";
-        return false;
-    }
-    memcpy(legacy_request->service_specific_info,
-           hidl_request.baseConfigs.serviceSpecificInfo.data(),
-           legacy_request->service_specific_info_len);
-    legacy_request->sdea_service_specific_info_len =
-        hidl_request.baseConfigs.extendedServiceSpecificInfo.size();
-    if (legacy_request->sdea_service_specific_info_len >
-        NAN_MAX_SDEA_SERVICE_SPECIFIC_INFO_LEN) {
-        LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
-                      "sdea_service_specific_info_len too large";
-        return false;
-    }
-    memcpy(legacy_request->sdea_service_specific_info,
-           hidl_request.baseConfigs.extendedServiceSpecificInfo.data(),
-           legacy_request->sdea_service_specific_info_len);
-    legacy_request->rx_match_filter_len =
-        hidl_request.baseConfigs.rxMatchFilter.size();
-    if (legacy_request->rx_match_filter_len > NAN_MAX_MATCH_FILTER_LEN) {
-        LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
-                      "rx_match_filter_len too large";
-        return false;
-    }
-    memcpy(legacy_request->rx_match_filter,
-           hidl_request.baseConfigs.rxMatchFilter.data(),
-           legacy_request->rx_match_filter_len);
-    legacy_request->tx_match_filter_len =
-        hidl_request.baseConfigs.txMatchFilter.size();
-    if (legacy_request->tx_match_filter_len > NAN_MAX_MATCH_FILTER_LEN) {
-        LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
-                      "tx_match_filter_len too large";
-        return false;
-    }
-    memcpy(legacy_request->tx_match_filter,
-           hidl_request.baseConfigs.txMatchFilter.data(),
-           legacy_request->tx_match_filter_len);
-    legacy_request->rssi_threshold_flag =
-        hidl_request.baseConfigs.useRssiThreshold;
-    legacy_request->recv_indication_cfg = 0;
-    legacy_request->recv_indication_cfg |=
-        hidl_request.baseConfigs.disableDiscoveryTerminationIndication ? 0x1
-                                                                       : 0x0;
-    legacy_request->recv_indication_cfg |=
-        hidl_request.baseConfigs.disableMatchExpirationIndication ? 0x2 : 0x0;
-    legacy_request->recv_indication_cfg |=
-        hidl_request.baseConfigs.disableFollowupReceivedIndication ? 0x4 : 0x0;
-    legacy_request->cipher_type =
-        (unsigned int)hidl_request.baseConfigs.securityConfig.cipherType;
-    if (hidl_request.baseConfigs.securityConfig.securityType ==
-        NanDataPathSecurityType::PMK) {
-        legacy_request->key_info.key_type =
-            legacy_hal::NAN_SECURITY_KEY_INPUT_PMK;
-        legacy_request->key_info.body.pmk_info.pmk_len =
-            hidl_request.baseConfigs.securityConfig.pmk.size();
-        if (legacy_request->key_info.body.pmk_info.pmk_len !=
-            NAN_PMK_INFO_LEN) {
-            LOG(ERROR)
-                << "convertHidlNanSubscribeRequestToLegacy: invalid pmk_len";
-            return false;
-        }
-        memcpy(legacy_request->key_info.body.pmk_info.pmk,
-               hidl_request.baseConfigs.securityConfig.pmk.data(),
-               legacy_request->key_info.body.pmk_info.pmk_len);
-    }
-    if (hidl_request.baseConfigs.securityConfig.securityType ==
-        NanDataPathSecurityType::PASSPHRASE) {
-        legacy_request->key_info.key_type =
-            legacy_hal::NAN_SECURITY_KEY_INPUT_PASSPHRASE;
-        legacy_request->key_info.body.passphrase_info.passphrase_len =
-            hidl_request.baseConfigs.securityConfig.passphrase.size();
-        if (legacy_request->key_info.body.passphrase_info.passphrase_len <
-            NAN_SECURITY_MIN_PASSPHRASE_LEN) {
-            LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
-                          "passphrase_len too small";
-            return false;
-        }
-        if (legacy_request->key_info.body.passphrase_info.passphrase_len >
-            NAN_SECURITY_MAX_PASSPHRASE_LEN) {
-            LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
-                          "passphrase_len too large";
-            return false;
-        }
-        memcpy(legacy_request->key_info.body.passphrase_info.passphrase,
-               hidl_request.baseConfigs.securityConfig.passphrase.data(),
-               legacy_request->key_info.body.passphrase_info.passphrase_len);
-    }
-    legacy_request->sdea_params.security_cfg =
-        (hidl_request.baseConfigs.securityConfig.securityType !=
-         NanDataPathSecurityType::OPEN)
-            ? legacy_hal::NAN_DP_CONFIG_SECURITY
-            : legacy_hal::NAN_DP_CONFIG_NO_SECURITY;
-    legacy_request->sdea_params.ranging_state =
-        hidl_request.baseConfigs.rangingRequired
-            ? legacy_hal::NAN_RANGING_ENABLE
-            : legacy_hal::NAN_RANGING_DISABLE;
-    legacy_request->ranging_cfg.ranging_interval_msec =
-        hidl_request.baseConfigs.rangingIntervalMsec;
-    legacy_request->ranging_cfg.config_ranging_indications =
-        hidl_request.baseConfigs.configRangingIndications;
-    legacy_request->ranging_cfg.distance_ingress_mm =
-        hidl_request.baseConfigs.distanceIngressCm * 10;
-    legacy_request->ranging_cfg.distance_egress_mm =
-        hidl_request.baseConfigs.distanceEgressCm * 10;
-    legacy_request->ranging_auto_response =
-        hidl_request.baseConfigs.rangingRequired
-            ? legacy_hal::NAN_RANGING_AUTO_RESPONSE_ENABLE
-            : legacy_hal::NAN_RANGING_AUTO_RESPONSE_DISABLE;
-    legacy_request->sdea_params.range_report =
-        legacy_hal::NAN_DISABLE_RANGE_REPORT;
-    legacy_request->subscribe_type =
-        convertHidlNanSubscribeTypeToLegacy(hidl_request.subscribeType);
-    legacy_request->serviceResponseFilter =
-        convertHidlNanSrfTypeToLegacy(hidl_request.srfType);
-    legacy_request->serviceResponseInclude =
-        hidl_request.srfRespondIfInAddressSet
-            ? legacy_hal::NAN_SRF_INCLUDE_RESPOND
-            : legacy_hal::NAN_SRF_INCLUDE_DO_NOT_RESPOND;
-    legacy_request->useServiceResponseFilter =
-        hidl_request.shouldUseSrf ? legacy_hal::NAN_USE_SRF
-                                  : legacy_hal::NAN_DO_NOT_USE_SRF;
-    legacy_request->ssiRequiredForMatchIndication =
-        hidl_request.isSsiRequiredForMatch
-            ? legacy_hal::NAN_SSI_REQUIRED_IN_MATCH_IND
-            : legacy_hal::NAN_SSI_NOT_REQUIRED_IN_MATCH_IND;
-    legacy_request->num_intf_addr_present = hidl_request.intfAddr.size();
-    if (legacy_request->num_intf_addr_present > NAN_MAX_SUBSCRIBE_MAX_ADDRESS) {
-        LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
-                      "num_intf_addr_present - too many";
-        return false;
-    }
-    for (int i = 0; i < legacy_request->num_intf_addr_present; i++) {
-        memcpy(legacy_request->intf_addr[i], hidl_request.intfAddr[i].data(),
-               6);
-    }
-
-    return true;
-}
-
-bool convertHidlNanTransmitFollowupRequestToLegacy(
-    const NanTransmitFollowupRequest& hidl_request,
-    legacy_hal::NanTransmitFollowupRequest* legacy_request) {
-    if (!legacy_request) {
-        LOG(ERROR) << "convertHidlNanTransmitFollowupRequestToLegacy: "
-                      "legacy_request is null";
-        return false;
-    }
-    *legacy_request = {};
-
-    legacy_request->publish_subscribe_id = hidl_request.discoverySessionId;
-    legacy_request->requestor_instance_id = hidl_request.peerId;
-    memcpy(legacy_request->addr, hidl_request.addr.data(), 6);
-    legacy_request->priority = hidl_request.isHighPriority
-                                   ? legacy_hal::NAN_TX_PRIORITY_HIGH
-                                   : legacy_hal::NAN_TX_PRIORITY_NORMAL;
-    legacy_request->dw_or_faw = hidl_request.shouldUseDiscoveryWindow
-                                    ? legacy_hal::NAN_TRANSMIT_IN_DW
-                                    : legacy_hal::NAN_TRANSMIT_IN_FAW;
-    legacy_request->service_specific_info_len =
-        hidl_request.serviceSpecificInfo.size();
-    if (legacy_request->service_specific_info_len >
-        NAN_MAX_SERVICE_SPECIFIC_INFO_LEN) {
-        LOG(ERROR) << "convertHidlNanTransmitFollowupRequestToLegacy: "
-                      "service_specific_info_len too large";
-        return false;
-    }
-    memcpy(legacy_request->service_specific_info,
-           hidl_request.serviceSpecificInfo.data(),
-           legacy_request->service_specific_info_len);
-    legacy_request->sdea_service_specific_info_len =
-        hidl_request.extendedServiceSpecificInfo.size();
-    if (legacy_request->sdea_service_specific_info_len >
-        NAN_MAX_SDEA_SERVICE_SPECIFIC_INFO_LEN) {
-        LOG(ERROR) << "convertHidlNanTransmitFollowupRequestToLegacy: "
-                      "sdea_service_specific_info_len too large";
-        return false;
-    }
-    memcpy(legacy_request->sdea_service_specific_info,
-           hidl_request.extendedServiceSpecificInfo.data(),
-           legacy_request->sdea_service_specific_info_len);
-    legacy_request->recv_indication_cfg =
-        hidl_request.disableFollowupResultIndication ? 0x1 : 0x0;
-
-    return true;
-}
-
-bool convertHidlNanConfigRequestToLegacy(
-    const V1_4::NanConfigRequest& hidl_request,
-    legacy_hal::NanConfigRequest* legacy_request) {
-    if (!legacy_request) {
-        LOG(ERROR)
-            << "convertHidlNanConfigRequestToLegacy: legacy_request is null";
-        return false;
-    }
-    *legacy_request = {};
-
-    // TODO: b/34059183 tracks missing configurations in legacy HAL or uknown
-    // defaults
-    legacy_request->master_pref = hidl_request.masterPref;
-    legacy_request->discovery_indication_cfg = 0;
-    legacy_request->discovery_indication_cfg |=
-        hidl_request.disableDiscoveryAddressChangeIndication ? 0x1 : 0x0;
-    legacy_request->discovery_indication_cfg |=
-        hidl_request.disableStartedClusterIndication ? 0x2 : 0x0;
-    legacy_request->discovery_indication_cfg |=
-        hidl_request.disableJoinedClusterIndication ? 0x4 : 0x0;
-    legacy_request->config_sid_beacon = 1;
-    if (hidl_request.numberOfPublishServiceIdsInBeacon > 127) {
-        LOG(ERROR) << "convertHidlNanConfigRequestToLegacy: "
-                      "numberOfPublishServiceIdsInBeacon > 127";
-        return false;
-    }
-    legacy_request->sid_beacon =
-        (hidl_request.includePublishServiceIdsInBeacon ? 0x1 : 0x0) |
-        (hidl_request.numberOfPublishServiceIdsInBeacon << 1);
-    legacy_request->config_subscribe_sid_beacon = 1;
-    if (hidl_request.numberOfSubscribeServiceIdsInBeacon > 127) {
-        LOG(ERROR) << "convertHidlNanConfigRequestToLegacy: "
-                      "numberOfSubscribeServiceIdsInBeacon > 127";
-        return false;
-    }
-    legacy_request->subscribe_sid_beacon_val =
-        (hidl_request.includeSubscribeServiceIdsInBeacon ? 0x1 : 0x0) |
-        (hidl_request.numberOfSubscribeServiceIdsInBeacon << 1);
-    legacy_request->config_rssi_window_size = 1;
-    legacy_request->rssi_window_size_val = hidl_request.rssiWindowSize;
-    legacy_request->config_disc_mac_addr_randomization = 1;
-    legacy_request->disc_mac_addr_rand_interval_sec =
-        hidl_request.macAddressRandomizationIntervalSec;
-    /* TODO : missing
-    legacy_request->config_2dot4g_rssi_close = 1;
-    legacy_request->rssi_close_2dot4g_val =
-          hidl_request.bandSpecificConfig[
-              (size_t) NanBandIndex::NAN_BAND_24GHZ].rssiClose;
-    legacy_request->config_2dot4g_rssi_middle = 1;
-    legacy_request->rssi_middle_2dot4g_val =
-          hidl_request.bandSpecificConfig[
-              (size_t) NanBandIndex::NAN_BAND_24GHZ].rssiMiddle;
-    legacy_request->config_2dot4g_rssi_proximity = 1;
-    legacy_request->rssi_proximity_2dot4g_val =
-          hidl_request.bandSpecificConfig[
-              (size_t) NanBandIndex::NAN_BAND_24GHZ].rssiCloseProximity;
-    */
-    legacy_request->config_scan_params = 1;
-    legacy_request->scan_params_val
-        .dwell_time[legacy_hal::NAN_CHANNEL_24G_BAND] =
-        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
-            .dwellTimeMs;
-    legacy_request->scan_params_val
-        .scan_period[legacy_hal::NAN_CHANNEL_24G_BAND] =
-        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
-            .scanPeriodSec;
-    legacy_request->config_dw.config_2dot4g_dw_band =
-        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
-            .validDiscoveryWindowIntervalVal;
-    legacy_request->config_dw.dw_2dot4g_interval_val =
-        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
-            .discoveryWindowIntervalVal;
-    /* TODO: missing
-    legacy_request->config_5g_rssi_close = 1;
-    legacy_request->rssi_close_5g_val =
-          hidl_request.bandSpecificConfig[
-              (size_t) NanBandIndex::NAN_BAND_5GHZ].rssiClose;
-    legacy_request->config_5g_rssi_middle = 1;
-    legacy_request->rssi_middle_5g_val =
-          hidl_request.bandSpecificConfig[
-              (size_t) NanBandIndex::NAN_BAND_5GHZ].rssiMiddle;
-    */
-    legacy_request->config_5g_rssi_close_proximity = 1;
-    legacy_request->rssi_close_proximity_5g_val =
-        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .rssiCloseProximity;
-    legacy_request->scan_params_val
-        .dwell_time[legacy_hal::NAN_CHANNEL_5G_BAND_LOW] =
-        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .dwellTimeMs;
-    legacy_request->scan_params_val
-        .scan_period[legacy_hal::NAN_CHANNEL_5G_BAND_LOW] =
-        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .scanPeriodSec;
-    legacy_request->scan_params_val
-        .dwell_time[legacy_hal::NAN_CHANNEL_5G_BAND_HIGH] =
-        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .dwellTimeMs;
-    legacy_request->scan_params_val
-        .scan_period[legacy_hal::NAN_CHANNEL_5G_BAND_HIGH] =
-        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .scanPeriodSec;
-    legacy_request->config_dw.config_5g_dw_band =
-        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .validDiscoveryWindowIntervalVal;
-    legacy_request->config_dw.dw_5g_interval_val =
-        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .discoveryWindowIntervalVal;
-    /* TODO: b/145609058
-     * Missing updates needed to legacy_hal::NanConfigRequest and conversion to
-     * it for 6GHz band */
-
-    return true;
-}
-
-bool convertHidlNanConfigRequest_1_4ToLegacy(
-    const V1_4::NanConfigRequest& hidl_request1,
-    const NanConfigRequestSupplemental& hidl_request2,
-    legacy_hal::NanConfigRequest* legacy_request) {
-    if (!legacy_request) {
-        LOG(ERROR) << "convertHidlNanConfigRequest_1_4ToLegacy: legacy_request "
-                      "is null";
-        return false;
-    }
-
-    *legacy_request = {};
-    if (!convertHidlNanConfigRequestToLegacy(hidl_request1, legacy_request)) {
-        return false;
-    }
-
-    legacy_request->config_discovery_beacon_int = 1;
-    legacy_request->discovery_beacon_interval =
-        hidl_request2.V1_2.discoveryBeaconIntervalMs;
-    legacy_request->config_nss = 1;
-    legacy_request->nss = hidl_request2.V1_2.numberOfSpatialStreamsInDiscovery;
-    legacy_request->config_dw_early_termination = 1;
-    legacy_request->enable_dw_termination =
-        hidl_request2.V1_2.enableDiscoveryWindowEarlyTermination;
-    legacy_request->config_enable_ranging = 1;
-    legacy_request->enable_ranging = hidl_request2.V1_2.enableRanging;
-
-    return true;
-}
-
-bool convertHidlNanDataPathInitiatorRequestToLegacy(
-    const NanInitiateDataPathRequest& hidl_request,
-    legacy_hal::NanDataPathInitiatorRequest* legacy_request) {
-    if (!legacy_request) {
-        LOG(ERROR) << "convertHidlNanDataPathInitiatorRequestToLegacy: "
-                      "legacy_request is null";
-        return false;
-    }
-    *legacy_request = {};
-
-    legacy_request->requestor_instance_id = hidl_request.peerId;
-    memcpy(legacy_request->peer_disc_mac_addr,
-           hidl_request.peerDiscMacAddr.data(), 6);
-    legacy_request->channel_request_type =
-        convertHidlNanDataPathChannelCfgToLegacy(
-            hidl_request.channelRequestType);
-    legacy_request->channel = hidl_request.channel;
-    if (strnlen(hidl_request.ifaceName.c_str(), IFNAMSIZ + 1) == IFNAMSIZ + 1) {
-        LOG(ERROR) << "convertHidlNanDataPathInitiatorRequestToLegacy: "
-                      "ifaceName too long";
-        return false;
-    }
-    strncpy(legacy_request->ndp_iface, hidl_request.ifaceName.c_str(),
-            IFNAMSIZ + 1);
-    legacy_request->ndp_cfg.security_cfg =
-        (hidl_request.securityConfig.securityType !=
-         NanDataPathSecurityType::OPEN)
-            ? legacy_hal::NAN_DP_CONFIG_SECURITY
-            : legacy_hal::NAN_DP_CONFIG_NO_SECURITY;
-    legacy_request->app_info.ndp_app_info_len = hidl_request.appInfo.size();
-    if (legacy_request->app_info.ndp_app_info_len > NAN_DP_MAX_APP_INFO_LEN) {
-        LOG(ERROR) << "convertHidlNanDataPathInitiatorRequestToLegacy: "
-                      "ndp_app_info_len too large";
-        return false;
-    }
-    memcpy(legacy_request->app_info.ndp_app_info, hidl_request.appInfo.data(),
-           legacy_request->app_info.ndp_app_info_len);
-    legacy_request->cipher_type =
-        (unsigned int)hidl_request.securityConfig.cipherType;
-    if (hidl_request.securityConfig.securityType ==
-        NanDataPathSecurityType::PMK) {
-        legacy_request->key_info.key_type =
-            legacy_hal::NAN_SECURITY_KEY_INPUT_PMK;
-        legacy_request->key_info.body.pmk_info.pmk_len =
-            hidl_request.securityConfig.pmk.size();
-        if (legacy_request->key_info.body.pmk_info.pmk_len !=
-            NAN_PMK_INFO_LEN) {
-            LOG(ERROR) << "convertHidlNanDataPathInitiatorRequestToLegacy: "
-                          "invalid pmk_len";
-            return false;
-        }
-        memcpy(legacy_request->key_info.body.pmk_info.pmk,
-               hidl_request.securityConfig.pmk.data(),
-               legacy_request->key_info.body.pmk_info.pmk_len);
-    }
-    if (hidl_request.securityConfig.securityType ==
-        NanDataPathSecurityType::PASSPHRASE) {
-        legacy_request->key_info.key_type =
-            legacy_hal::NAN_SECURITY_KEY_INPUT_PASSPHRASE;
-        legacy_request->key_info.body.passphrase_info.passphrase_len =
-            hidl_request.securityConfig.passphrase.size();
-        if (legacy_request->key_info.body.passphrase_info.passphrase_len <
-            NAN_SECURITY_MIN_PASSPHRASE_LEN) {
-            LOG(ERROR) << "convertHidlNanDataPathInitiatorRequestToLegacy: "
-                          "passphrase_len too small";
-            return false;
-        }
-        if (legacy_request->key_info.body.passphrase_info.passphrase_len >
-            NAN_SECURITY_MAX_PASSPHRASE_LEN) {
-            LOG(ERROR) << "convertHidlNanDataPathInitiatorRequestToLegacy: "
-                          "passphrase_len too large";
-            return false;
-        }
-        memcpy(legacy_request->key_info.body.passphrase_info.passphrase,
-               hidl_request.securityConfig.passphrase.data(),
-               legacy_request->key_info.body.passphrase_info.passphrase_len);
-    }
-    legacy_request->service_name_len = hidl_request.serviceNameOutOfBand.size();
-    if (legacy_request->service_name_len > NAN_MAX_SERVICE_NAME_LEN) {
-        LOG(ERROR) << "convertHidlNanDataPathInitiatorRequestToLegacy: "
-                      "service_name_len too large";
-        return false;
-    }
-    memcpy(legacy_request->service_name,
-           hidl_request.serviceNameOutOfBand.data(),
-           legacy_request->service_name_len);
-
-    return true;
-}
-
-bool convertHidlNanDataPathIndicationResponseToLegacy(
-    const NanRespondToDataPathIndicationRequest& hidl_request,
-    legacy_hal::NanDataPathIndicationResponse* legacy_request) {
-    if (!legacy_request) {
-        LOG(ERROR) << "convertHidlNanDataPathIndicationResponseToLegacy: "
-                      "legacy_request is null";
-        return false;
-    }
-    *legacy_request = {};
-
-    legacy_request->rsp_code = hidl_request.acceptRequest
-                                   ? legacy_hal::NAN_DP_REQUEST_ACCEPT
-                                   : legacy_hal::NAN_DP_REQUEST_REJECT;
-    legacy_request->ndp_instance_id = hidl_request.ndpInstanceId;
-    if (strnlen(hidl_request.ifaceName.c_str(), IFNAMSIZ + 1) == IFNAMSIZ + 1) {
-        LOG(ERROR) << "convertHidlNanDataPathIndicationResponseToLegacy: "
-                      "ifaceName too long";
-        return false;
-    }
-    strncpy(legacy_request->ndp_iface, hidl_request.ifaceName.c_str(),
-            IFNAMSIZ + 1);
-    legacy_request->ndp_cfg.security_cfg =
-        (hidl_request.securityConfig.securityType !=
-         NanDataPathSecurityType::OPEN)
-            ? legacy_hal::NAN_DP_CONFIG_SECURITY
-            : legacy_hal::NAN_DP_CONFIG_NO_SECURITY;
-    legacy_request->app_info.ndp_app_info_len = hidl_request.appInfo.size();
-    if (legacy_request->app_info.ndp_app_info_len > NAN_DP_MAX_APP_INFO_LEN) {
-        LOG(ERROR) << "convertHidlNanDataPathIndicationResponseToLegacy: "
-                      "ndp_app_info_len too large";
-        return false;
-    }
-    memcpy(legacy_request->app_info.ndp_app_info, hidl_request.appInfo.data(),
-           legacy_request->app_info.ndp_app_info_len);
-    legacy_request->cipher_type =
-        (unsigned int)hidl_request.securityConfig.cipherType;
-    if (hidl_request.securityConfig.securityType ==
-        NanDataPathSecurityType::PMK) {
-        legacy_request->key_info.key_type =
-            legacy_hal::NAN_SECURITY_KEY_INPUT_PMK;
-        legacy_request->key_info.body.pmk_info.pmk_len =
-            hidl_request.securityConfig.pmk.size();
-        if (legacy_request->key_info.body.pmk_info.pmk_len !=
-            NAN_PMK_INFO_LEN) {
-            LOG(ERROR) << "convertHidlNanDataPathIndicationResponseToLegacy: "
-                          "invalid pmk_len";
-            return false;
-        }
-        memcpy(legacy_request->key_info.body.pmk_info.pmk,
-               hidl_request.securityConfig.pmk.data(),
-               legacy_request->key_info.body.pmk_info.pmk_len);
-    }
-    if (hidl_request.securityConfig.securityType ==
-        NanDataPathSecurityType::PASSPHRASE) {
-        legacy_request->key_info.key_type =
-            legacy_hal::NAN_SECURITY_KEY_INPUT_PASSPHRASE;
-        legacy_request->key_info.body.passphrase_info.passphrase_len =
-            hidl_request.securityConfig.passphrase.size();
-        if (legacy_request->key_info.body.passphrase_info.passphrase_len <
-            NAN_SECURITY_MIN_PASSPHRASE_LEN) {
-            LOG(ERROR) << "convertHidlNanDataPathIndicationResponseToLegacy: "
-                          "passphrase_len too small";
-            return false;
-        }
-        if (legacy_request->key_info.body.passphrase_info.passphrase_len >
-            NAN_SECURITY_MAX_PASSPHRASE_LEN) {
-            LOG(ERROR) << "convertHidlNanDataPathIndicationResponseToLegacy: "
-                          "passphrase_len too large";
-            return false;
-        }
-        memcpy(legacy_request->key_info.body.passphrase_info.passphrase,
-               hidl_request.securityConfig.passphrase.data(),
-               legacy_request->key_info.body.passphrase_info.passphrase_len);
-    }
-    legacy_request->service_name_len = hidl_request.serviceNameOutOfBand.size();
-    if (legacy_request->service_name_len > NAN_MAX_SERVICE_NAME_LEN) {
-        LOG(ERROR) << "convertHidlNanDataPathIndicationResponseToLegacy: "
-                      "service_name_len too large";
-        return false;
-    }
-    memcpy(legacy_request->service_name,
-           hidl_request.serviceNameOutOfBand.data(),
-           legacy_request->service_name_len);
-
-    return true;
-}
-
-bool convertLegacyNanResponseHeaderToHidl(
-    const legacy_hal::NanResponseMsg& legacy_response,
-    WifiNanStatus* wifiNanStatus) {
-    if (!wifiNanStatus) {
-        LOG(ERROR)
-            << "convertLegacyNanResponseHeaderToHidl: wifiNanStatus is null";
-        return false;
-    }
-    *wifiNanStatus = {};
-
-    convertToWifiNanStatus(legacy_response.status, legacy_response.nan_error,
-                           sizeof(legacy_response.nan_error), wifiNanStatus);
-    return true;
-}
-
-bool convertLegacyNanCapabilitiesResponseToHidl(
-    const legacy_hal::NanCapabilities& legacy_response,
-    NanCapabilities* hidl_response) {
-    if (!hidl_response) {
-        LOG(ERROR) << "convertLegacyNanCapabilitiesResponseToHidl: "
-                      "hidl_response is null";
-        return false;
-    }
-    *hidl_response = {};
-
-    hidl_response->V1_0.maxConcurrentClusters =
-        legacy_response.max_concurrent_nan_clusters;
-    hidl_response->V1_0.maxPublishes = legacy_response.max_publishes;
-    hidl_response->V1_0.maxSubscribes = legacy_response.max_subscribes;
-    hidl_response->V1_0.maxServiceNameLen =
-        legacy_response.max_service_name_len;
-    hidl_response->V1_0.maxMatchFilterLen =
-        legacy_response.max_match_filter_len;
-    hidl_response->V1_0.maxTotalMatchFilterLen =
-        legacy_response.max_total_match_filter_len;
-    hidl_response->V1_0.maxServiceSpecificInfoLen =
-        legacy_response.max_service_specific_info_len;
-    hidl_response->V1_0.maxExtendedServiceSpecificInfoLen =
-        legacy_response.max_sdea_service_specific_info_len;
-    hidl_response->V1_0.maxNdiInterfaces = legacy_response.max_ndi_interfaces;
-    hidl_response->V1_0.maxNdpSessions = legacy_response.max_ndp_sessions;
-    hidl_response->V1_0.maxAppInfoLen = legacy_response.max_app_info_len;
-    hidl_response->V1_0.maxQueuedTransmitFollowupMsgs =
-        legacy_response.max_queued_transmit_followup_msgs;
-    hidl_response->V1_0.maxSubscribeInterfaceAddresses =
-        legacy_response.max_subscribe_address;
-    hidl_response->V1_0.supportedCipherSuites =
-        legacy_response.cipher_suites_supported;
-    hidl_response->instantCommunicationModeSupportFlag =
-        legacy_response.is_instant_mode_supported;
-
-    return true;
-}
-
-bool convertLegacyNanMatchIndToHidl(const legacy_hal::NanMatchInd& legacy_ind,
-                                    NanMatchInd* hidl_ind) {
-    if (!hidl_ind) {
-        LOG(ERROR) << "convertLegacyNanMatchIndToHidl: hidl_ind is null";
-        return false;
-    }
-    *hidl_ind = {};
-
-    hidl_ind->discoverySessionId = legacy_ind.publish_subscribe_id;
-    hidl_ind->peerId = legacy_ind.requestor_instance_id;
-    hidl_ind->addr = hidl_array<uint8_t, 6>(legacy_ind.addr);
-    hidl_ind->serviceSpecificInfo =
-        std::vector<uint8_t>(legacy_ind.service_specific_info,
-                             legacy_ind.service_specific_info +
-                                 legacy_ind.service_specific_info_len);
-    hidl_ind->extendedServiceSpecificInfo =
-        std::vector<uint8_t>(legacy_ind.sdea_service_specific_info,
-                             legacy_ind.sdea_service_specific_info +
-                                 legacy_ind.sdea_service_specific_info_len);
-    hidl_ind->matchFilter = std::vector<uint8_t>(
-        legacy_ind.sdf_match_filter,
-        legacy_ind.sdf_match_filter + legacy_ind.sdf_match_filter_len);
-    hidl_ind->matchOccuredInBeaconFlag = legacy_ind.match_occured_flag == 1;
-    hidl_ind->outOfResourceFlag = legacy_ind.out_of_resource_flag == 1;
-    hidl_ind->rssiValue = legacy_ind.rssi_value;
-    hidl_ind->peerCipherType = (NanCipherSuiteType)legacy_ind.peer_cipher_type;
-    hidl_ind->peerRequiresSecurityEnabledInNdp =
-        legacy_ind.peer_sdea_params.security_cfg ==
-        legacy_hal::NAN_DP_CONFIG_SECURITY;
-    hidl_ind->peerRequiresRanging = legacy_ind.peer_sdea_params.ranging_state ==
-                                    legacy_hal::NAN_RANGING_ENABLE;
-    hidl_ind->rangingMeasurementInCm =
-        legacy_ind.range_info.range_measurement_mm / 10;
-    hidl_ind->rangingIndicationType = legacy_ind.range_info.ranging_event_type;
-
-    return true;
-}
-
-bool convertLegacyNanFollowupIndToHidl(
-    const legacy_hal::NanFollowupInd& legacy_ind,
-    NanFollowupReceivedInd* hidl_ind) {
-    if (!hidl_ind) {
-        LOG(ERROR) << "convertLegacyNanFollowupIndToHidl: hidl_ind is null";
-        return false;
-    }
-    *hidl_ind = {};
-
-    hidl_ind->discoverySessionId = legacy_ind.publish_subscribe_id;
-    hidl_ind->peerId = legacy_ind.requestor_instance_id;
-    hidl_ind->addr = hidl_array<uint8_t, 6>(legacy_ind.addr);
-    hidl_ind->receivedInFaw = legacy_ind.dw_or_faw == 1;
-    hidl_ind->serviceSpecificInfo =
-        std::vector<uint8_t>(legacy_ind.service_specific_info,
-                             legacy_ind.service_specific_info +
-                                 legacy_ind.service_specific_info_len);
-    hidl_ind->extendedServiceSpecificInfo =
-        std::vector<uint8_t>(legacy_ind.sdea_service_specific_info,
-                             legacy_ind.sdea_service_specific_info +
-                                 legacy_ind.sdea_service_specific_info_len);
-
-    return true;
-}
-
-bool convertLegacyNanDataPathRequestIndToHidl(
-    const legacy_hal::NanDataPathRequestInd& legacy_ind,
-    NanDataPathRequestInd* hidl_ind) {
-    if (!hidl_ind) {
-        LOG(ERROR)
-            << "convertLegacyNanDataPathRequestIndToHidl: hidl_ind is null";
-        return false;
-    }
-    *hidl_ind = {};
-
-    hidl_ind->discoverySessionId = legacy_ind.service_instance_id;
-    hidl_ind->peerDiscMacAddr =
-        hidl_array<uint8_t, 6>(legacy_ind.peer_disc_mac_addr);
-    hidl_ind->ndpInstanceId = legacy_ind.ndp_instance_id;
-    hidl_ind->securityRequired =
-        legacy_ind.ndp_cfg.security_cfg == legacy_hal::NAN_DP_CONFIG_SECURITY;
-    hidl_ind->appInfo =
-        std::vector<uint8_t>(legacy_ind.app_info.ndp_app_info,
-                             legacy_ind.app_info.ndp_app_info +
-                                 legacy_ind.app_info.ndp_app_info_len);
-
-    return true;
-}
-
-bool convertLegacyNdpChannelInfoToHidl(
-    const legacy_hal::NanChannelInfo& legacy_struct,
-    V1_2::NanDataPathChannelInfo* hidl_struct) {
-    if (!hidl_struct) {
-        LOG(ERROR) << "convertLegacyNdpChannelInfoToHidl: hidl_struct is null";
-        return false;
-    }
-    *hidl_struct = {};
-
-    hidl_struct->channelFreq = legacy_struct.channel;
-    hidl_struct->channelBandwidth = convertLegacyWifiChannelWidthToHidl(
-        (legacy_hal::wifi_channel_width)legacy_struct.bandwidth);
-    hidl_struct->numSpatialStreams = legacy_struct.nss;
-
-    return true;
-}
-
-bool convertLegacyNanDataPathConfirmIndToHidl(
-    const legacy_hal::NanDataPathConfirmInd& legacy_ind,
-    V1_2::NanDataPathConfirmInd* hidl_ind) {
-    if (!hidl_ind) {
-        LOG(ERROR)
-            << "convertLegacyNanDataPathConfirmIndToHidl: hidl_ind is null";
-        return false;
-    }
-    *hidl_ind = {};
-
-    hidl_ind->V1_0.ndpInstanceId = legacy_ind.ndp_instance_id;
-    hidl_ind->V1_0.dataPathSetupSuccess =
-        legacy_ind.rsp_code == legacy_hal::NAN_DP_REQUEST_ACCEPT;
-    hidl_ind->V1_0.peerNdiMacAddr =
-        hidl_array<uint8_t, 6>(legacy_ind.peer_ndi_mac_addr);
-    hidl_ind->V1_0.appInfo =
-        std::vector<uint8_t>(legacy_ind.app_info.ndp_app_info,
-                             legacy_ind.app_info.ndp_app_info +
-                                 legacy_ind.app_info.ndp_app_info_len);
-    hidl_ind->V1_0.status.status =
-        convertLegacyNanStatusTypeToHidl(legacy_ind.reason_code);
-    hidl_ind->V1_0.status.description = "";  // TODO: b/34059183
-
-    std::vector<V1_2::NanDataPathChannelInfo> channelInfo;
-    for (unsigned int i = 0; i < legacy_ind.num_channels; ++i) {
-        V1_2::NanDataPathChannelInfo hidl_struct;
-        if (!convertLegacyNdpChannelInfoToHidl(legacy_ind.channel_info[i],
-                                               &hidl_struct)) {
-            return false;
-        }
-        channelInfo.push_back(hidl_struct);
-    }
-    hidl_ind->channelInfo = channelInfo;
-
-    return true;
-}
-
-bool convertLegacyNanDataPathScheduleUpdateIndToHidl(
-    const legacy_hal::NanDataPathScheduleUpdateInd& legacy_ind,
-    V1_2::NanDataPathScheduleUpdateInd* hidl_ind) {
-    if (!hidl_ind) {
-        LOG(ERROR) << "convertLegacyNanDataPathScheduleUpdateIndToHidl: "
-                      "hidl_ind is null";
-        return false;
-    }
-    *hidl_ind = {};
-
-    hidl_ind->peerDiscoveryAddress =
-        hidl_array<uint8_t, 6>(legacy_ind.peer_mac_addr);
-    std::vector<V1_2::NanDataPathChannelInfo> channelInfo;
-    for (unsigned int i = 0; i < legacy_ind.num_channels; ++i) {
-        V1_2::NanDataPathChannelInfo hidl_struct;
-        if (!convertLegacyNdpChannelInfoToHidl(legacy_ind.channel_info[i],
-                                               &hidl_struct)) {
-            return false;
-        }
-        channelInfo.push_back(hidl_struct);
-    }
-    hidl_ind->channelInfo = channelInfo;
-    std::vector<uint32_t> ndpInstanceIds;
-    for (unsigned int i = 0; i < legacy_ind.num_ndp_instances; ++i) {
-        ndpInstanceIds.push_back(legacy_ind.ndp_instance_id[i]);
-    }
-    hidl_ind->ndpInstanceIds = ndpInstanceIds;
-
-    return true;
-}
-
-legacy_hal::wifi_rtt_type convertHidlRttTypeToLegacy(RttType type) {
-    switch (type) {
-        case RttType::ONE_SIDED:
-            return legacy_hal::RTT_TYPE_1_SIDED;
-        case RttType::TWO_SIDED:
-            return legacy_hal::RTT_TYPE_2_SIDED;
-    };
-    CHECK(false);
-}
-
-RttType convertLegacyRttTypeToHidl(legacy_hal::wifi_rtt_type type) {
-    switch (type) {
-        case legacy_hal::RTT_TYPE_1_SIDED:
-            return RttType::ONE_SIDED;
-        case legacy_hal::RTT_TYPE_2_SIDED:
-            return RttType::TWO_SIDED;
-    };
-    CHECK(false) << "Unknown legacy type: " << type;
-}
-
-legacy_hal::rtt_peer_type convertHidlRttPeerTypeToLegacy(RttPeerType type) {
-    switch (type) {
-        case RttPeerType::AP:
-            return legacy_hal::RTT_PEER_AP;
-        case RttPeerType::STA:
-            return legacy_hal::RTT_PEER_STA;
-        case RttPeerType::P2P_GO:
-            return legacy_hal::RTT_PEER_P2P_GO;
-        case RttPeerType::P2P_CLIENT:
-            return legacy_hal::RTT_PEER_P2P_CLIENT;
-        case RttPeerType::NAN:
-            return legacy_hal::RTT_PEER_NAN;
-    };
-    CHECK(false);
-}
-
-legacy_hal::wifi_channel_width convertHidlWifiChannelWidthToLegacy(
-    WifiChannelWidthInMhz type) {
-    switch (type) {
-        case WifiChannelWidthInMhz::WIDTH_20:
-            return legacy_hal::WIFI_CHAN_WIDTH_20;
-        case WifiChannelWidthInMhz::WIDTH_40:
-            return legacy_hal::WIFI_CHAN_WIDTH_40;
-        case WifiChannelWidthInMhz::WIDTH_80:
-            return legacy_hal::WIFI_CHAN_WIDTH_80;
-        case WifiChannelWidthInMhz::WIDTH_160:
-            return legacy_hal::WIFI_CHAN_WIDTH_160;
-        case WifiChannelWidthInMhz::WIDTH_80P80:
-            return legacy_hal::WIFI_CHAN_WIDTH_80P80;
-        case WifiChannelWidthInMhz::WIDTH_5:
-            return legacy_hal::WIFI_CHAN_WIDTH_5;
-        case WifiChannelWidthInMhz::WIDTH_10:
-            return legacy_hal::WIFI_CHAN_WIDTH_10;
-        case WifiChannelWidthInMhz::WIDTH_INVALID:
-            return legacy_hal::WIFI_CHAN_WIDTH_INVALID;
-    };
-    CHECK(false);
-}
-
-WifiChannelWidthInMhz convertLegacyWifiChannelWidthToHidl(
-    legacy_hal::wifi_channel_width type) {
-    switch (type) {
-        case legacy_hal::WIFI_CHAN_WIDTH_20:
-            return WifiChannelWidthInMhz::WIDTH_20;
-        case legacy_hal::WIFI_CHAN_WIDTH_40:
-            return WifiChannelWidthInMhz::WIDTH_40;
-        case legacy_hal::WIFI_CHAN_WIDTH_80:
-            return WifiChannelWidthInMhz::WIDTH_80;
-        case legacy_hal::WIFI_CHAN_WIDTH_160:
-            return WifiChannelWidthInMhz::WIDTH_160;
-        case legacy_hal::WIFI_CHAN_WIDTH_80P80:
-            return WifiChannelWidthInMhz::WIDTH_80P80;
-        case legacy_hal::WIFI_CHAN_WIDTH_5:
-            return WifiChannelWidthInMhz::WIDTH_5;
-        case legacy_hal::WIFI_CHAN_WIDTH_10:
-            return WifiChannelWidthInMhz::WIDTH_10;
-        default:
-            return WifiChannelWidthInMhz::WIDTH_INVALID;
-    };
-}
-
-legacy_hal::wifi_rtt_preamble convertHidlRttPreambleToLegacy(
-    V1_4::RttPreamble type) {
-    switch (type) {
-        case V1_4::RttPreamble::LEGACY:
-            return legacy_hal::WIFI_RTT_PREAMBLE_LEGACY;
-        case V1_4::RttPreamble::HT:
-            return legacy_hal::WIFI_RTT_PREAMBLE_HT;
-        case V1_4::RttPreamble::VHT:
-            return legacy_hal::WIFI_RTT_PREAMBLE_VHT;
-        case V1_4::RttPreamble::HE:
-            return legacy_hal::WIFI_RTT_PREAMBLE_HE;
-    };
-    CHECK(false);
-}
-
-V1_4::RttPreamble convertLegacyRttPreambleToHidl(
-    legacy_hal::wifi_rtt_preamble type) {
-    switch (type) {
-        case legacy_hal::WIFI_RTT_PREAMBLE_LEGACY:
-            return V1_4::RttPreamble::LEGACY;
-        case legacy_hal::WIFI_RTT_PREAMBLE_HT:
-            return V1_4::RttPreamble::HT;
-        case legacy_hal::WIFI_RTT_PREAMBLE_VHT:
-            return V1_4::RttPreamble::VHT;
-        case legacy_hal::WIFI_RTT_PREAMBLE_HE:
-            return V1_4::RttPreamble::HE;
-    };
-    CHECK(false) << "Unknown legacy type: " << type;
-}
-
-legacy_hal::wifi_rtt_bw convertHidlRttBwToLegacy(RttBw type) {
-    switch (type) {
-        case RttBw::BW_5MHZ:
-            return legacy_hal::WIFI_RTT_BW_5;
-        case RttBw::BW_10MHZ:
-            return legacy_hal::WIFI_RTT_BW_10;
-        case RttBw::BW_20MHZ:
-            return legacy_hal::WIFI_RTT_BW_20;
-        case RttBw::BW_40MHZ:
-            return legacy_hal::WIFI_RTT_BW_40;
-        case RttBw::BW_80MHZ:
-            return legacy_hal::WIFI_RTT_BW_80;
-        case RttBw::BW_160MHZ:
-            return legacy_hal::WIFI_RTT_BW_160;
-    };
-    CHECK(false);
-}
-
-RttBw convertLegacyRttBwToHidl(legacy_hal::wifi_rtt_bw type) {
-    switch (type) {
-        case legacy_hal::WIFI_RTT_BW_5:
-            return RttBw::BW_5MHZ;
-        case legacy_hal::WIFI_RTT_BW_10:
-            return RttBw::BW_10MHZ;
-        case legacy_hal::WIFI_RTT_BW_20:
-            return RttBw::BW_20MHZ;
-        case legacy_hal::WIFI_RTT_BW_40:
-            return RttBw::BW_40MHZ;
-        case legacy_hal::WIFI_RTT_BW_80:
-            return RttBw::BW_80MHZ;
-        case legacy_hal::WIFI_RTT_BW_160:
-            return RttBw::BW_160MHZ;
-    };
-    CHECK(false) << "Unknown legacy type: " << type;
-}
-
-legacy_hal::wifi_motion_pattern convertHidlRttMotionPatternToLegacy(
-    RttMotionPattern type) {
-    switch (type) {
-        case RttMotionPattern::NOT_EXPECTED:
-            return legacy_hal::WIFI_MOTION_NOT_EXPECTED;
-        case RttMotionPattern::EXPECTED:
-            return legacy_hal::WIFI_MOTION_EXPECTED;
-        case RttMotionPattern::UNKNOWN:
-            return legacy_hal::WIFI_MOTION_UNKNOWN;
-    };
-    CHECK(false);
-}
-
-V1_4::WifiRatePreamble convertLegacyWifiRatePreambleToHidl(uint8_t preamble) {
-    switch (preamble) {
-        case 0:
-            return V1_4::WifiRatePreamble::OFDM;
-        case 1:
-            return V1_4::WifiRatePreamble::CCK;
-        case 2:
-            return V1_4::WifiRatePreamble::HT;
-        case 3:
-            return V1_4::WifiRatePreamble::VHT;
-        case 4:
-            return V1_4::WifiRatePreamble::HE;
-        default:
-            return V1_4::WifiRatePreamble::RESERVED;
-    };
-    CHECK(false) << "Unknown legacy preamble: " << preamble;
-}
-
-WifiRateNss convertLegacyWifiRateNssToHidl(uint8_t nss) {
-    switch (nss) {
-        case 0:
-            return WifiRateNss::NSS_1x1;
-        case 1:
-            return WifiRateNss::NSS_2x2;
-        case 2:
-            return WifiRateNss::NSS_3x3;
-        case 3:
-            return WifiRateNss::NSS_4x4;
-    };
-    CHECK(false) << "Unknown legacy nss: " << nss;
-    return {};
-}
-
-RttStatus convertLegacyRttStatusToHidl(legacy_hal::wifi_rtt_status status) {
-    switch (status) {
-        case legacy_hal::RTT_STATUS_SUCCESS:
-            return RttStatus::SUCCESS;
-        case legacy_hal::RTT_STATUS_FAILURE:
-            return RttStatus::FAILURE;
-        case legacy_hal::RTT_STATUS_FAIL_NO_RSP:
-            return RttStatus::FAIL_NO_RSP;
-        case legacy_hal::RTT_STATUS_FAIL_REJECTED:
-            return RttStatus::FAIL_REJECTED;
-        case legacy_hal::RTT_STATUS_FAIL_NOT_SCHEDULED_YET:
-            return RttStatus::FAIL_NOT_SCHEDULED_YET;
-        case legacy_hal::RTT_STATUS_FAIL_TM_TIMEOUT:
-            return RttStatus::FAIL_TM_TIMEOUT;
-        case legacy_hal::RTT_STATUS_FAIL_AP_ON_DIFF_CHANNEL:
-            return RttStatus::FAIL_AP_ON_DIFF_CHANNEL;
-        case legacy_hal::RTT_STATUS_FAIL_NO_CAPABILITY:
-            return RttStatus::FAIL_NO_CAPABILITY;
-        case legacy_hal::RTT_STATUS_ABORTED:
-            return RttStatus::ABORTED;
-        case legacy_hal::RTT_STATUS_FAIL_INVALID_TS:
-            return RttStatus::FAIL_INVALID_TS;
-        case legacy_hal::RTT_STATUS_FAIL_PROTOCOL:
-            return RttStatus::FAIL_PROTOCOL;
-        case legacy_hal::RTT_STATUS_FAIL_SCHEDULE:
-            return RttStatus::FAIL_SCHEDULE;
-        case legacy_hal::RTT_STATUS_FAIL_BUSY_TRY_LATER:
-            return RttStatus::FAIL_BUSY_TRY_LATER;
-        case legacy_hal::RTT_STATUS_INVALID_REQ:
-            return RttStatus::INVALID_REQ;
-        case legacy_hal::RTT_STATUS_NO_WIFI:
-            return RttStatus::NO_WIFI;
-        case legacy_hal::RTT_STATUS_FAIL_FTM_PARAM_OVERRIDE:
-            return RttStatus::FAIL_FTM_PARAM_OVERRIDE;
-        case legacy_hal::RTT_STATUS_NAN_RANGING_PROTOCOL_FAILURE:
-            return RttStatus::FAILURE;  // TODO: add HIDL enumeration
-        case legacy_hal::RTT_STATUS_NAN_RANGING_CONCURRENCY_NOT_SUPPORTED:
-            return RttStatus::FAILURE;  // TODO: add HIDL enumeration
-    };
-    CHECK(false) << "Unknown legacy status: " << status;
-}
-
-bool convertHidlWifiChannelInfoToLegacy(
-    const WifiChannelInfo& hidl_info,
-    legacy_hal::wifi_channel_info* legacy_info) {
-    if (!legacy_info) {
-        return false;
-    }
-    *legacy_info = {};
-    legacy_info->width = convertHidlWifiChannelWidthToLegacy(hidl_info.width);
-    legacy_info->center_freq = hidl_info.centerFreq;
-    legacy_info->center_freq0 = hidl_info.centerFreq0;
-    legacy_info->center_freq1 = hidl_info.centerFreq1;
-    return true;
-}
-
-bool convertLegacyWifiChannelInfoToHidl(
-    const legacy_hal::wifi_channel_info& legacy_info,
-    WifiChannelInfo* hidl_info) {
-    if (!hidl_info) {
-        return false;
-    }
-    *hidl_info = {};
-    hidl_info->width = convertLegacyWifiChannelWidthToHidl(legacy_info.width);
-    hidl_info->centerFreq = legacy_info.center_freq;
-    hidl_info->centerFreq0 = legacy_info.center_freq0;
-    hidl_info->centerFreq1 = legacy_info.center_freq1;
-    return true;
-}
-
-bool convertHidlRttConfigToLegacy(const V1_4::RttConfig& hidl_config,
-                                  legacy_hal::wifi_rtt_config* legacy_config) {
-    if (!legacy_config) {
-        return false;
-    }
-    *legacy_config = {};
-    CHECK(hidl_config.addr.size() == sizeof(legacy_config->addr));
-    memcpy(legacy_config->addr, hidl_config.addr.data(),
-           hidl_config.addr.size());
-    legacy_config->type = convertHidlRttTypeToLegacy(hidl_config.type);
-    legacy_config->peer = convertHidlRttPeerTypeToLegacy(hidl_config.peer);
-    if (!convertHidlWifiChannelInfoToLegacy(hidl_config.channel,
-                                            &legacy_config->channel)) {
-        return false;
-    }
-    legacy_config->burst_period = hidl_config.burstPeriod;
-    legacy_config->num_burst = hidl_config.numBurst;
-    legacy_config->num_frames_per_burst = hidl_config.numFramesPerBurst;
-    legacy_config->num_retries_per_rtt_frame =
-        hidl_config.numRetriesPerRttFrame;
-    legacy_config->num_retries_per_ftmr = hidl_config.numRetriesPerFtmr;
-    legacy_config->LCI_request = hidl_config.mustRequestLci;
-    legacy_config->LCR_request = hidl_config.mustRequestLcr;
-    legacy_config->burst_duration = hidl_config.burstDuration;
-    legacy_config->preamble =
-        convertHidlRttPreambleToLegacy(hidl_config.preamble);
-    legacy_config->bw = convertHidlRttBwToLegacy(hidl_config.bw);
-    return true;
-}
-
-bool convertHidlVectorOfRttConfigToLegacy(
-    const std::vector<V1_4::RttConfig>& hidl_configs,
-    std::vector<legacy_hal::wifi_rtt_config>* legacy_configs) {
-    if (!legacy_configs) {
-        return false;
-    }
-    *legacy_configs = {};
-    for (const auto& hidl_config : hidl_configs) {
-        legacy_hal::wifi_rtt_config legacy_config;
-        if (!convertHidlRttConfigToLegacy(hidl_config, &legacy_config)) {
-            return false;
-        }
-        legacy_configs->push_back(legacy_config);
-    }
-    return true;
-}
-
-bool convertHidlRttLciInformationToLegacy(
-    const RttLciInformation& hidl_info,
-    legacy_hal::wifi_lci_information* legacy_info) {
-    if (!legacy_info) {
-        return false;
-    }
-    *legacy_info = {};
-    legacy_info->latitude = hidl_info.latitude;
-    legacy_info->longitude = hidl_info.longitude;
-    legacy_info->altitude = hidl_info.altitude;
-    legacy_info->latitude_unc = hidl_info.latitudeUnc;
-    legacy_info->longitude_unc = hidl_info.longitudeUnc;
-    legacy_info->altitude_unc = hidl_info.altitudeUnc;
-    legacy_info->motion_pattern =
-        convertHidlRttMotionPatternToLegacy(hidl_info.motionPattern);
-    legacy_info->floor = hidl_info.floor;
-    legacy_info->height_above_floor = hidl_info.heightAboveFloor;
-    legacy_info->height_unc = hidl_info.heightUnc;
-    return true;
-}
-
-bool convertHidlRttLcrInformationToLegacy(
-    const RttLcrInformation& hidl_info,
-    legacy_hal::wifi_lcr_information* legacy_info) {
-    if (!legacy_info) {
-        return false;
-    }
-    *legacy_info = {};
-    CHECK(hidl_info.countryCode.size() == sizeof(legacy_info->country_code));
-    memcpy(legacy_info->country_code, hidl_info.countryCode.data(),
-           hidl_info.countryCode.size());
-    if (hidl_info.civicInfo.size() > sizeof(legacy_info->civic_info)) {
-        return false;
-    }
-    legacy_info->length = hidl_info.civicInfo.size();
-    memcpy(legacy_info->civic_info, hidl_info.civicInfo.c_str(),
-           hidl_info.civicInfo.size());
-    return true;
-}
-
-bool convertHidlRttResponderToLegacy(
-    const V1_4::RttResponder& hidl_responder,
-    legacy_hal::wifi_rtt_responder* legacy_responder) {
-    if (!legacy_responder) {
-        return false;
-    }
-    *legacy_responder = {};
-    if (!convertHidlWifiChannelInfoToLegacy(hidl_responder.channel,
-                                            &legacy_responder->channel)) {
-        return false;
-    }
-    legacy_responder->preamble =
-        convertHidlRttPreambleToLegacy(hidl_responder.preamble);
-    return true;
-}
-
-bool convertLegacyRttResponderToHidl(
-    const legacy_hal::wifi_rtt_responder& legacy_responder,
-    V1_4::RttResponder* hidl_responder) {
-    if (!hidl_responder) {
-        return false;
-    }
-    *hidl_responder = {};
-    if (!convertLegacyWifiChannelInfoToHidl(legacy_responder.channel,
-                                            &hidl_responder->channel)) {
-        return false;
-    }
-    hidl_responder->preamble =
-        convertLegacyRttPreambleToHidl(legacy_responder.preamble);
-    return true;
-}
-
-bool convertLegacyRttCapabilitiesToHidl(
-    const legacy_hal::wifi_rtt_capabilities& legacy_capabilities,
-    V1_4::RttCapabilities* hidl_capabilities) {
-    if (!hidl_capabilities) {
-        return false;
-    }
-    *hidl_capabilities = {};
-    hidl_capabilities->rttOneSidedSupported =
-        legacy_capabilities.rtt_one_sided_supported;
-    hidl_capabilities->rttFtmSupported = legacy_capabilities.rtt_ftm_supported;
-    hidl_capabilities->lciSupported = legacy_capabilities.lci_support;
-    hidl_capabilities->lcrSupported = legacy_capabilities.lcr_support;
-    hidl_capabilities->responderSupported =
-        legacy_capabilities.responder_supported;
-    hidl_capabilities->preambleSupport = 0;
-    for (const auto flag :
-         {legacy_hal::WIFI_RTT_PREAMBLE_LEGACY,
-          legacy_hal::WIFI_RTT_PREAMBLE_HT, legacy_hal::WIFI_RTT_PREAMBLE_VHT,
-          legacy_hal::WIFI_RTT_PREAMBLE_HE}) {
-        if (legacy_capabilities.preamble_support & flag) {
-            hidl_capabilities->preambleSupport |=
-                static_cast<std::underlying_type<V1_4::RttPreamble>::type>(
-                    convertLegacyRttPreambleToHidl(flag));
-        }
-    }
-    hidl_capabilities->bwSupport = 0;
-    for (const auto flag :
-         {legacy_hal::WIFI_RTT_BW_5, legacy_hal::WIFI_RTT_BW_10,
-          legacy_hal::WIFI_RTT_BW_20, legacy_hal::WIFI_RTT_BW_40,
-          legacy_hal::WIFI_RTT_BW_80, legacy_hal::WIFI_RTT_BW_160}) {
-        if (legacy_capabilities.bw_support & flag) {
-            hidl_capabilities->bwSupport |=
-                static_cast<std::underlying_type<RttBw>::type>(
-                    convertLegacyRttBwToHidl(flag));
-        }
-    }
-    hidl_capabilities->mcVersion = legacy_capabilities.mc_version;
-    return true;
-}
-
-bool convertLegacyWifiRateInfoToHidl(const legacy_hal::wifi_rate& legacy_rate,
-                                     V1_4::WifiRateInfo* hidl_rate) {
-    if (!hidl_rate) {
-        return false;
-    }
-    *hidl_rate = {};
-    hidl_rate->preamble =
-        convertLegacyWifiRatePreambleToHidl(legacy_rate.preamble);
-    hidl_rate->nss = convertLegacyWifiRateNssToHidl(legacy_rate.nss);
-    hidl_rate->bw = convertLegacyWifiChannelWidthToHidl(
-        static_cast<legacy_hal::wifi_channel_width>(legacy_rate.bw));
-    hidl_rate->rateMcsIdx = legacy_rate.rateMcsIdx;
-    hidl_rate->bitRateInKbps = legacy_rate.bitrate;
-    return true;
-}
-
-bool convertLegacyRttResultToHidl(
-    const legacy_hal::wifi_rtt_result& legacy_result,
-    V1_4::RttResult* hidl_result) {
-    if (!hidl_result) {
-        return false;
-    }
-    *hidl_result = {};
-    CHECK(sizeof(legacy_result.addr) == hidl_result->addr.size());
-    memcpy(hidl_result->addr.data(), legacy_result.addr,
-           sizeof(legacy_result.addr));
-    hidl_result->burstNum = legacy_result.burst_num;
-    hidl_result->measurementNumber = legacy_result.measurement_number;
-    hidl_result->successNumber = legacy_result.success_number;
-    hidl_result->numberPerBurstPeer = legacy_result.number_per_burst_peer;
-    hidl_result->status = convertLegacyRttStatusToHidl(legacy_result.status);
-    hidl_result->retryAfterDuration = legacy_result.retry_after_duration;
-    hidl_result->type = convertLegacyRttTypeToHidl(legacy_result.type);
-    hidl_result->rssi = legacy_result.rssi;
-    hidl_result->rssiSpread = legacy_result.rssi_spread;
-    if (!convertLegacyWifiRateInfoToHidl(legacy_result.tx_rate,
-                                         &hidl_result->txRate)) {
-        return false;
-    }
-    if (!convertLegacyWifiRateInfoToHidl(legacy_result.rx_rate,
-                                         &hidl_result->rxRate)) {
-        return false;
-    }
-    hidl_result->rtt = legacy_result.rtt;
-    hidl_result->rttSd = legacy_result.rtt_sd;
-    hidl_result->rttSpread = legacy_result.rtt_spread;
-    hidl_result->distanceInMm = legacy_result.distance_mm;
-    hidl_result->distanceSdInMm = legacy_result.distance_sd_mm;
-    hidl_result->distanceSpreadInMm = legacy_result.distance_spread_mm;
-    hidl_result->timeStampInUs = legacy_result.ts;
-    hidl_result->burstDurationInMs = legacy_result.burst_duration;
-    hidl_result->negotiatedBurstNum = legacy_result.negotiated_burst_num;
-    if (legacy_result.LCI &&
-        !convertLegacyIeToHidl(*legacy_result.LCI, &hidl_result->lci)) {
-        return false;
-    }
-    if (legacy_result.LCR &&
-        !convertLegacyIeToHidl(*legacy_result.LCR, &hidl_result->lcr)) {
-        return false;
-    }
-    return true;
-}
-
-bool convertLegacyVectorOfRttResultToHidl(
-    const std::vector<const legacy_hal::wifi_rtt_result*>& legacy_results,
-    std::vector<V1_4::RttResult>* hidl_results) {
-    if (!hidl_results) {
-        return false;
-    }
-    *hidl_results = {};
-    for (const auto legacy_result : legacy_results) {
-        V1_4::RttResult hidl_result;
-        if (!convertLegacyRttResultToHidl(*legacy_result, &hidl_result)) {
-            return false;
-        }
-        hidl_results->push_back(hidl_result);
-    }
-    return true;
-}
-
-legacy_hal::wifi_interface_type convertHidlIfaceTypeToLegacy(
-    IfaceType hidl_interface_type) {
-    switch (hidl_interface_type) {
-        case IfaceType::STA:
-            return legacy_hal::WIFI_INTERFACE_TYPE_STA;
-        case IfaceType::AP:
-            return legacy_hal::WIFI_INTERFACE_TYPE_AP;
-        case IfaceType::P2P:
-            return legacy_hal::WIFI_INTERFACE_TYPE_P2P;
-        case IfaceType::NAN:
-            return legacy_hal::WIFI_INTERFACE_TYPE_NAN;
-    }
-    CHECK(false);
-}
-
-legacy_hal::wifi_multi_sta_use_case convertHidlMultiStaUseCaseToLegacy(
-    IWifiChip::MultiStaUseCase use_case) {
-    switch (use_case) {
-        case IWifiChip::MultiStaUseCase::DUAL_STA_TRANSIENT_PREFER_PRIMARY:
-            return legacy_hal::WIFI_DUAL_STA_TRANSIENT_PREFER_PRIMARY;
-        case IWifiChip::MultiStaUseCase::DUAL_STA_NON_TRANSIENT_UNBIASED:
-            return legacy_hal::WIFI_DUAL_STA_NON_TRANSIENT_UNBIASED;
-    }
-    CHECK(false);
-}
-
-bool convertHidlCoexUnsafeChannelToLegacy(
-    const IWifiChip::CoexUnsafeChannel& hidl_unsafe_channel,
-    legacy_hal::wifi_coex_unsafe_channel* legacy_unsafe_channel) {
-    if (!legacy_unsafe_channel) {
-        return false;
-    }
-    *legacy_unsafe_channel = {};
-    switch (hidl_unsafe_channel.band) {
-        case WifiBand::BAND_24GHZ:
-            legacy_unsafe_channel->band = legacy_hal::WLAN_MAC_2_4_BAND;
-            break;
-        case WifiBand::BAND_5GHZ:
-            legacy_unsafe_channel->band = legacy_hal::WLAN_MAC_5_0_BAND;
-            break;
-        default:
-            return false;
-    };
-    legacy_unsafe_channel->channel = hidl_unsafe_channel.channel;
-    legacy_unsafe_channel->power_cap_dbm = hidl_unsafe_channel.powerCapDbm;
-    return true;
-}
-
-bool convertHidlVectorOfCoexUnsafeChannelToLegacy(
-    const std::vector<IWifiChip::CoexUnsafeChannel>& hidl_unsafe_channels,
-    std::vector<legacy_hal::wifi_coex_unsafe_channel>* legacy_unsafe_channels) {
-    if (!legacy_unsafe_channels) {
-        return false;
-    }
-    *legacy_unsafe_channels = {};
-    for (const auto& hidl_unsafe_channel : hidl_unsafe_channels) {
-        legacy_hal::wifi_coex_unsafe_channel legacy_unsafe_channel;
-        if (!hidl_struct_util::convertHidlCoexUnsafeChannelToLegacy(
-                hidl_unsafe_channel, &legacy_unsafe_channel)) {
-            return false;
-        }
-        legacy_unsafe_channels->push_back(legacy_unsafe_channel);
-    }
-    return true;
-}
-
-}  // namespace hidl_struct_util
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.5/default/hidl_struct_util.h b/wifi/1.5/default/hidl_struct_util.h
deleted file mode 100644
index 352f213..0000000
--- a/wifi/1.5/default/hidl_struct_util.h
+++ /dev/null
@@ -1,227 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef HIDL_STRUCT_UTIL_H_
-#define HIDL_STRUCT_UTIL_H_
-
-#include <vector>
-
-#include <android/hardware/wifi/1.0/IWifiChip.h>
-#include <android/hardware/wifi/1.0/types.h>
-#include <android/hardware/wifi/1.2/types.h>
-#include <android/hardware/wifi/1.3/types.h>
-#include <android/hardware/wifi/1.4/IWifiChipEventCallback.h>
-#include <android/hardware/wifi/1.4/types.h>
-#include <android/hardware/wifi/1.5/IWifiChip.h>
-#include <android/hardware/wifi/1.5/types.h>
-
-#include "wifi_legacy_hal.h"
-
-/**
- * This file contains a bunch of functions to convert structs from the legacy
- * HAL to HIDL and vice versa.
- * TODO(b/32093047): Add unit tests for these conversion methods in the VTS test
- * suite.
- */
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-namespace hidl_struct_util {
-using namespace android::hardware::wifi::V1_0;
-
-// Chip conversion methods.
-bool convertLegacyFeaturesToHidlChipCapabilities(
-    uint64_t legacy_feature_set, uint32_t legacy_logger_feature_set,
-    uint32_t* hidl_caps);
-bool convertLegacyDebugRingBufferStatusToHidl(
-    const legacy_hal::wifi_ring_buffer_status& legacy_status,
-    WifiDebugRingBufferStatus* hidl_status);
-bool convertLegacyVectorOfDebugRingBufferStatusToHidl(
-    const std::vector<legacy_hal::wifi_ring_buffer_status>& legacy_status_vec,
-    std::vector<WifiDebugRingBufferStatus>* hidl_status_vec);
-bool convertLegacyWakeReasonStatsToHidl(
-    const legacy_hal::WakeReasonStats& legacy_stats,
-    WifiDebugHostWakeReasonStats* hidl_stats);
-legacy_hal::wifi_power_scenario convertHidlTxPowerScenarioToLegacy(
-    V1_1::IWifiChip::TxPowerScenario hidl_scenario);
-legacy_hal::wifi_latency_mode convertHidlLatencyModeToLegacy(
-    V1_3::IWifiChip::LatencyMode hidl_latency_mode);
-legacy_hal::wifi_power_scenario convertHidlTxPowerScenarioToLegacy_1_2(
-    V1_2::IWifiChip::TxPowerScenario hidl_scenario);
-bool convertLegacyWifiMacInfosToHidl(
-    const std::vector<legacy_hal::WifiMacInfo>& legacy_mac_infos,
-    std::vector<V1_4::IWifiChipEventCallback::RadioModeInfo>*
-        hidl_radio_mode_infos);
-legacy_hal::wifi_interface_type convertHidlIfaceTypeToLegacy(
-    IfaceType hidl_interface_type);
-legacy_hal::wifi_multi_sta_use_case convertHidlMultiStaUseCaseToLegacy(
-    IWifiChip::MultiStaUseCase use_case);
-bool convertHidlCoexUnsafeChannelToLegacy(
-    const IWifiChip::CoexUnsafeChannel& hidl_unsafe_channel,
-    legacy_hal::wifi_coex_unsafe_channel* legacy_unsafe_channel);
-bool convertHidlVectorOfCoexUnsafeChannelToLegacy(
-    const std::vector<IWifiChip::CoexUnsafeChannel>& hidl_unsafe_channels,
-    std::vector<legacy_hal::wifi_coex_unsafe_channel>* legacy_unsafe_channels);
-
-// STA iface conversion methods.
-bool convertLegacyFeaturesToHidlStaCapabilities(
-    uint64_t legacy_feature_set, uint32_t legacy_logger_feature_set,
-    uint32_t* hidl_caps);
-bool convertLegacyApfCapabilitiesToHidl(
-    const legacy_hal::PacketFilterCapabilities& legacy_caps,
-    StaApfPacketFilterCapabilities* hidl_caps);
-bool convertLegacyGscanCapabilitiesToHidl(
-    const legacy_hal::wifi_gscan_capabilities& legacy_caps,
-    StaBackgroundScanCapabilities* hidl_caps);
-legacy_hal::wifi_band convertHidlWifiBandToLegacy(V1_0::WifiBand band);
-bool convertHidlGscanParamsToLegacy(
-    const StaBackgroundScanParameters& hidl_scan_params,
-    legacy_hal::wifi_scan_cmd_params* legacy_scan_params);
-// |has_ie_data| indicates whether or not the wifi_scan_result includes 802.11
-// Information Elements (IEs)
-bool convertLegacyGscanResultToHidl(
-    const legacy_hal::wifi_scan_result& legacy_scan_result, bool has_ie_data,
-    StaScanResult* hidl_scan_result);
-// |cached_results| is assumed to not include IEs.
-bool convertLegacyVectorOfCachedGscanResultsToHidl(
-    const std::vector<legacy_hal::wifi_cached_scan_results>&
-        legacy_cached_scan_results,
-    std::vector<StaScanData>* hidl_scan_datas);
-bool convertLegacyLinkLayerStatsToHidl(
-    const legacy_hal::LinkLayerStats& legacy_stats,
-    StaLinkLayerStats* hidl_stats);
-bool convertLegacyRoamingCapabilitiesToHidl(
-    const legacy_hal::wifi_roaming_capabilities& legacy_caps,
-    StaRoamingCapabilities* hidl_caps);
-bool convertHidlRoamingConfigToLegacy(
-    const StaRoamingConfig& hidl_config,
-    legacy_hal::wifi_roaming_config* legacy_config);
-legacy_hal::fw_roaming_state_t convertHidlRoamingStateToLegacy(
-    StaRoamingState state);
-bool convertLegacyVectorOfDebugTxPacketFateToHidl(
-    const std::vector<legacy_hal::wifi_tx_report>& legacy_fates,
-    std::vector<WifiDebugTxPacketFateReport>* hidl_fates);
-bool convertLegacyVectorOfDebugRxPacketFateToHidl(
-    const std::vector<legacy_hal::wifi_rx_report>& legacy_fates,
-    std::vector<WifiDebugRxPacketFateReport>* hidl_fates);
-
-// NAN iface conversion methods.
-void convertToWifiNanStatus(legacy_hal::NanStatusType type, const char* str,
-                            size_t max_len, WifiNanStatus* wifiNanStatus);
-bool convertHidlNanEnableRequestToLegacy(
-    const V1_4::NanEnableRequest& hidl_request,
-    legacy_hal::NanEnableRequest* legacy_request);
-bool convertHidlNanConfigRequestToLegacy(
-    const V1_4::NanConfigRequest& hidl_request,
-    legacy_hal::NanConfigRequest* legacy_request);
-bool convertHidlNanEnableRequest_1_4ToLegacy(
-    const V1_4::NanEnableRequest& hidl_request1,
-    const NanConfigRequestSupplemental& hidl_request2,
-    legacy_hal::NanEnableRequest* legacy_request);
-bool convertHidlNanConfigRequest_1_4ToLegacy(
-    const V1_4::NanConfigRequest& hidl_request1,
-    const NanConfigRequestSupplemental& hidl_request2,
-    legacy_hal::NanConfigRequest* legacy_request);
-bool convertHidlNanEnableRequest_1_5ToLegacy(
-    const V1_4::NanEnableRequest& hidl_request1,
-    const NanConfigRequestSupplemental& hidl_request2,
-    legacy_hal::NanEnableRequest* legacy_request);
-bool convertHidlNanConfigRequest_1_5ToLegacy(
-    const V1_4::NanConfigRequest& hidl_request1,
-    const NanConfigRequestSupplemental& hidl_request2,
-    legacy_hal::NanConfigRequest* legacy_request);
-bool convertHidlNanPublishRequestToLegacy(
-    const NanPublishRequest& hidl_request,
-    legacy_hal::NanPublishRequest* legacy_request);
-bool convertHidlNanSubscribeRequestToLegacy(
-    const NanSubscribeRequest& hidl_request,
-    legacy_hal::NanSubscribeRequest* legacy_request);
-bool convertHidlNanTransmitFollowupRequestToLegacy(
-    const NanTransmitFollowupRequest& hidl_request,
-    legacy_hal::NanTransmitFollowupRequest* legacy_request);
-bool convertHidlNanDataPathInitiatorRequestToLegacy(
-    const NanInitiateDataPathRequest& hidl_request,
-    legacy_hal::NanDataPathInitiatorRequest* legacy_request);
-bool convertHidlNanDataPathIndicationResponseToLegacy(
-    const NanRespondToDataPathIndicationRequest& hidl_response,
-    legacy_hal::NanDataPathIndicationResponse* legacy_response);
-bool convertLegacyNanResponseHeaderToHidl(
-    const legacy_hal::NanResponseMsg& legacy_response,
-    WifiNanStatus* wifiNanStatus);
-bool convertLegacyNanCapabilitiesResponseToHidl(
-    const legacy_hal::NanCapabilities& legacy_response,
-    NanCapabilities* hidl_response);
-bool convertLegacyNanMatchIndToHidl(const legacy_hal::NanMatchInd& legacy_ind,
-                                    NanMatchInd* hidl_ind);
-bool convertLegacyNanFollowupIndToHidl(
-    const legacy_hal::NanFollowupInd& legacy_ind,
-    NanFollowupReceivedInd* hidl_ind);
-bool convertLegacyNanDataPathRequestIndToHidl(
-    const legacy_hal::NanDataPathRequestInd& legacy_ind,
-    NanDataPathRequestInd* hidl_ind);
-bool convertLegacyNanDataPathConfirmIndToHidl(
-    const legacy_hal::NanDataPathConfirmInd& legacy_ind,
-    V1_2::NanDataPathConfirmInd* hidl_ind);
-bool convertLegacyNanDataPathScheduleUpdateIndToHidl(
-    const legacy_hal::NanDataPathScheduleUpdateInd& legacy_ind,
-    V1_2::NanDataPathScheduleUpdateInd* hidl_ind);
-
-// RTT controller conversion methods.
-bool convertHidlVectorOfRttConfigToLegacy(
-    const std::vector<V1_4::RttConfig>& hidl_configs,
-    std::vector<legacy_hal::wifi_rtt_config>* legacy_configs);
-bool convertHidlRttLciInformationToLegacy(
-    const RttLciInformation& hidl_info,
-    legacy_hal::wifi_lci_information* legacy_info);
-bool convertHidlRttLcrInformationToLegacy(
-    const RttLcrInformation& hidl_info,
-    legacy_hal::wifi_lcr_information* legacy_info);
-bool convertHidlRttResponderToLegacy(
-    const V1_4::RttResponder& hidl_responder,
-    legacy_hal::wifi_rtt_responder* legacy_responder);
-bool convertHidlWifiChannelInfoToLegacy(
-    const WifiChannelInfo& hidl_info,
-    legacy_hal::wifi_channel_info* legacy_info);
-bool convertLegacyRttResponderToHidl(
-    const legacy_hal::wifi_rtt_responder& legacy_responder,
-    V1_4::RttResponder* hidl_responder);
-bool convertLegacyRttCapabilitiesToHidl(
-    const legacy_hal::wifi_rtt_capabilities& legacy_capabilities,
-    V1_4::RttCapabilities* hidl_capabilities);
-bool convertLegacyVectorOfRttResultToHidl(
-    const std::vector<const legacy_hal::wifi_rtt_result*>& legacy_results,
-    std::vector<V1_4::RttResult>* hidl_results);
-uint32_t convertHidlWifiBandToLegacyMacBand(V1_5::WifiBand band);
-uint32_t convertHidlWifiIfaceModeToLegacy(uint32_t hidl_iface_mask);
-uint32_t convertHidlUsableChannelFilterToLegacy(uint32_t hidl_filter_mask);
-bool convertLegacyWifiUsableChannelsToHidl(
-    const std::vector<legacy_hal::wifi_usable_channel>& legacy_usable_channels,
-    std::vector<V1_5::WifiUsableChannel>* hidl_usable_channels);
-bool convertLegacyPeerInfoStatsToHidl(
-    const legacy_hal::WifiPeerInfo& legacy_peer_info_stats,
-    StaPeerInfo* hidl_peer_info_stats);
-bool convertLegacyWifiRateInfoToHidl(const legacy_hal::wifi_rate& legacy_rate,
-                                     V1_4::WifiRateInfo* hidl_rate);
-}  // namespace hidl_struct_util
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // HIDL_STRUCT_UTIL_H_
diff --git a/wifi/1.5/default/hidl_sync_util.cpp b/wifi/1.5/default/hidl_sync_util.cpp
deleted file mode 100644
index 93eefe9..0000000
--- a/wifi/1.5/default/hidl_sync_util.cpp
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "hidl_sync_util.h"
-
-namespace {
-std::recursive_mutex g_mutex;
-}  // namespace
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-namespace hidl_sync_util {
-
-std::unique_lock<std::recursive_mutex> acquireGlobalLock() {
-    return std::unique_lock<std::recursive_mutex>{g_mutex};
-}
-
-}  // namespace hidl_sync_util
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.5/default/hidl_sync_util.h b/wifi/1.5/default/hidl_sync_util.h
deleted file mode 100644
index e706f4c..0000000
--- a/wifi/1.5/default/hidl_sync_util.h
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef HIDL_SYNC_UTIL_H_
-#define HIDL_SYNC_UTIL_H_
-
-#include <mutex>
-
-// Utility that provides a global lock to synchronize access between
-// the HIDL thread and the legacy HAL's event loop.
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-namespace hidl_sync_util {
-std::unique_lock<std::recursive_mutex> acquireGlobalLock();
-}  // namespace hidl_sync_util
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-#endif  // HIDL_SYNC_UTIL_H_
diff --git a/wifi/1.5/default/ringbuffer.cpp b/wifi/1.5/default/ringbuffer.cpp
deleted file mode 100644
index f554111..0000000
--- a/wifi/1.5/default/ringbuffer.cpp
+++ /dev/null
@@ -1,59 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-
-#include "ringbuffer.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-
-Ringbuffer::Ringbuffer(size_t maxSize) : size_(0), maxSize_(maxSize) {}
-
-void Ringbuffer::append(const std::vector<uint8_t>& input) {
-    if (input.size() == 0) {
-        return;
-    }
-    if (input.size() > maxSize_) {
-        LOG(INFO) << "Oversized message of " << input.size()
-                  << " bytes is dropped";
-        return;
-    }
-    data_.push_back(input);
-    size_ += input.size() * sizeof(input[0]);
-    while (size_ > maxSize_) {
-        size_ -= data_.front().size() * sizeof(data_.front()[0]);
-        data_.pop_front();
-    }
-}
-
-const std::list<std::vector<uint8_t>>& Ringbuffer::getData() const {
-    return data_;
-}
-
-void Ringbuffer::clear() {
-    data_.clear();
-    size_ = 0;
-}
-
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.5/default/ringbuffer.h b/wifi/1.5/default/ringbuffer.h
deleted file mode 100644
index 03fb37a..0000000
--- a/wifi/1.5/default/ringbuffer.h
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef RINGBUFFER_H_
-#define RINGBUFFER_H_
-
-#include <list>
-#include <vector>
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-
-/**
- * Ringbuffer object used to store debug data.
- */
-class Ringbuffer {
-   public:
-    explicit Ringbuffer(size_t maxSize);
-
-    // Appends the data buffer and deletes from the front until buffer is
-    // within |maxSize_|.
-    void append(const std::vector<uint8_t>& input);
-    const std::list<std::vector<uint8_t>>& getData() const;
-    void clear();
-
-   private:
-    std::list<std::vector<uint8_t>> data_;
-    size_t size_;
-    size_t maxSize_;
-};
-
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // RINGBUFFER_H_
diff --git a/wifi/1.5/default/service.cpp b/wifi/1.5/default/service.cpp
deleted file mode 100644
index 3de49b2..0000000
--- a/wifi/1.5/default/service.cpp
+++ /dev/null
@@ -1,79 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-#include <hidl/HidlLazyUtils.h>
-#include <hidl/HidlTransportSupport.h>
-#include <signal.h>
-#include <utils/Looper.h>
-#include <utils/StrongPointer.h>
-
-#include "wifi.h"
-#include "wifi_feature_flags.h"
-#include "wifi_legacy_hal.h"
-#include "wifi_legacy_hal_factory.h"
-#include "wifi_mode_controller.h"
-
-using android::hardware::configureRpcThreadpool;
-using android::hardware::joinRpcThreadpool;
-using android::hardware::LazyServiceRegistrar;
-using android::hardware::wifi::V1_5::implementation::feature_flags::
-    WifiFeatureFlags;
-using android::hardware::wifi::V1_5::implementation::legacy_hal::WifiLegacyHal;
-using android::hardware::wifi::V1_5::implementation::legacy_hal::
-    WifiLegacyHalFactory;
-using android::hardware::wifi::V1_5::implementation::mode_controller::
-    WifiModeController;
-
-#ifdef LAZY_SERVICE
-const bool kLazyService = true;
-#else
-const bool kLazyService = false;
-#endif
-
-int main(int /*argc*/, char** argv) {
-    signal(SIGPIPE, SIG_IGN);
-    android::base::InitLogging(
-        argv, android::base::LogdLogger(android::base::SYSTEM));
-    LOG(INFO) << "Wifi Hal is booting up...";
-
-    configureRpcThreadpool(1, true /* callerWillJoin */);
-
-    const auto iface_tool =
-        std::make_shared<android::wifi_system::InterfaceTool>();
-    const auto legacy_hal_factory =
-        std::make_shared<WifiLegacyHalFactory>(iface_tool);
-
-    // Setup hwbinder service
-    android::sp<android::hardware::wifi::V1_5::IWifi> service =
-        new android::hardware::wifi::V1_5::implementation::Wifi(
-            iface_tool, legacy_hal_factory,
-            std::make_shared<WifiModeController>(),
-            std::make_shared<WifiFeatureFlags>());
-    if (kLazyService) {
-        auto registrar = LazyServiceRegistrar::getInstance();
-        CHECK_EQ(registrar.registerService(service), android::NO_ERROR)
-            << "Failed to register wifi HAL";
-    } else {
-        CHECK_EQ(service->registerAsService(), android::NO_ERROR)
-            << "Failed to register wifi HAL";
-    }
-
-    joinRpcThreadpool();
-
-    LOG(INFO) << "Wifi Hal is terminating...";
-    return 0;
-}
diff --git a/wifi/1.5/default/tests/hidl_struct_util_unit_tests.cpp b/wifi/1.5/default/tests/hidl_struct_util_unit_tests.cpp
deleted file mode 100644
index 4b4ebd6..0000000
--- a/wifi/1.5/default/tests/hidl_struct_util_unit_tests.cpp
+++ /dev/null
@@ -1,424 +0,0 @@
-/*
- * Copyright (C) 2017, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-#include <android-base/macros.h>
-#include <gmock/gmock.h>
-
-#undef NAN
-#include "hidl_struct_util.h"
-
-using testing::Test;
-
-namespace {
-constexpr uint32_t kMacId1 = 1;
-constexpr uint32_t kMacId2 = 2;
-constexpr uint32_t kIfaceChannel1 = 3;
-constexpr uint32_t kIfaceChannel2 = 5;
-constexpr char kIfaceName1[] = "wlan0";
-constexpr char kIfaceName2[] = "wlan1";
-}  // namespace
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-using namespace android::hardware::wifi::V1_0;
-using ::android::hardware::wifi::V1_0::WifiChannelWidthInMhz;
-
-class HidlStructUtilTest : public Test {};
-
-TEST_F(HidlStructUtilTest, CanConvertLegacyWifiMacInfosToHidlWithOneMac) {
-    std::vector<legacy_hal::WifiMacInfo> legacy_mac_infos;
-    legacy_hal::WifiMacInfo legacy_mac_info1 = {
-        .wlan_mac_id = kMacId1,
-        .mac_band =
-            legacy_hal::WLAN_MAC_5_0_BAND | legacy_hal::WLAN_MAC_2_4_BAND};
-    legacy_hal::WifiIfaceInfo legacy_iface_info1 = {.name = kIfaceName1,
-                                                    .channel = kIfaceChannel1};
-    legacy_hal::WifiIfaceInfo legacy_iface_info2 = {.name = kIfaceName2,
-                                                    .channel = kIfaceChannel2};
-    legacy_mac_info1.iface_infos.push_back(legacy_iface_info1);
-    legacy_mac_info1.iface_infos.push_back(legacy_iface_info2);
-    legacy_mac_infos.push_back(legacy_mac_info1);
-
-    std::vector<V1_4::IWifiChipEventCallback::RadioModeInfo>
-        hidl_radio_mode_infos;
-    ASSERT_TRUE(hidl_struct_util::convertLegacyWifiMacInfosToHidl(
-        legacy_mac_infos, &hidl_radio_mode_infos));
-
-    ASSERT_EQ(1u, hidl_radio_mode_infos.size());
-    auto hidl_radio_mode_info1 = hidl_radio_mode_infos[0];
-    EXPECT_EQ(legacy_mac_info1.wlan_mac_id, hidl_radio_mode_info1.radioId);
-    EXPECT_EQ(V1_4::WifiBand::BAND_24GHZ_5GHZ, hidl_radio_mode_info1.bandInfo);
-    ASSERT_EQ(2u, hidl_radio_mode_info1.ifaceInfos.size());
-    auto hidl_iface_info1 = hidl_radio_mode_info1.ifaceInfos[0];
-    EXPECT_EQ(legacy_iface_info1.name, hidl_iface_info1.name);
-    EXPECT_EQ(static_cast<uint32_t>(legacy_iface_info1.channel),
-              hidl_iface_info1.channel);
-    auto hidl_iface_info2 = hidl_radio_mode_info1.ifaceInfos[1];
-    EXPECT_EQ(legacy_iface_info2.name, hidl_iface_info2.name);
-    EXPECT_EQ(static_cast<uint32_t>(legacy_iface_info2.channel),
-              hidl_iface_info2.channel);
-}
-
-TEST_F(HidlStructUtilTest, CanConvertLegacyWifiMacInfosToHidlWithTwoMac) {
-    std::vector<legacy_hal::WifiMacInfo> legacy_mac_infos;
-    legacy_hal::WifiMacInfo legacy_mac_info1 = {
-        .wlan_mac_id = kMacId1, .mac_band = legacy_hal::WLAN_MAC_5_0_BAND};
-    legacy_hal::WifiIfaceInfo legacy_iface_info1 = {.name = kIfaceName1,
-                                                    .channel = kIfaceChannel1};
-    legacy_hal::WifiMacInfo legacy_mac_info2 = {
-        .wlan_mac_id = kMacId2, .mac_band = legacy_hal::WLAN_MAC_2_4_BAND};
-    legacy_hal::WifiIfaceInfo legacy_iface_info2 = {.name = kIfaceName2,
-                                                    .channel = kIfaceChannel2};
-    legacy_mac_info1.iface_infos.push_back(legacy_iface_info1);
-    legacy_mac_infos.push_back(legacy_mac_info1);
-    legacy_mac_info2.iface_infos.push_back(legacy_iface_info2);
-    legacy_mac_infos.push_back(legacy_mac_info2);
-
-    std::vector<V1_4::IWifiChipEventCallback::RadioModeInfo>
-        hidl_radio_mode_infos;
-    ASSERT_TRUE(hidl_struct_util::convertLegacyWifiMacInfosToHidl(
-        legacy_mac_infos, &hidl_radio_mode_infos));
-
-    ASSERT_EQ(2u, hidl_radio_mode_infos.size());
-
-    // Find mac info 1.
-    const auto hidl_radio_mode_info1 =
-        std::find_if(hidl_radio_mode_infos.begin(), hidl_radio_mode_infos.end(),
-                     [&legacy_mac_info1](
-                         const V1_4::IWifiChipEventCallback::RadioModeInfo& x) {
-                         return x.radioId == legacy_mac_info1.wlan_mac_id;
-                     });
-    ASSERT_NE(hidl_radio_mode_infos.end(), hidl_radio_mode_info1);
-    EXPECT_EQ(V1_4::WifiBand::BAND_5GHZ, hidl_radio_mode_info1->bandInfo);
-    ASSERT_EQ(1u, hidl_radio_mode_info1->ifaceInfos.size());
-    auto hidl_iface_info1 = hidl_radio_mode_info1->ifaceInfos[0];
-    EXPECT_EQ(legacy_iface_info1.name, hidl_iface_info1.name);
-    EXPECT_EQ(static_cast<uint32_t>(legacy_iface_info1.channel),
-              hidl_iface_info1.channel);
-
-    // Find mac info 2.
-    const auto hidl_radio_mode_info2 =
-        std::find_if(hidl_radio_mode_infos.begin(), hidl_radio_mode_infos.end(),
-                     [&legacy_mac_info2](
-                         const V1_4::IWifiChipEventCallback::RadioModeInfo& x) {
-                         return x.radioId == legacy_mac_info2.wlan_mac_id;
-                     });
-    ASSERT_NE(hidl_radio_mode_infos.end(), hidl_radio_mode_info2);
-    EXPECT_EQ(V1_4::WifiBand::BAND_24GHZ, hidl_radio_mode_info2->bandInfo);
-    ASSERT_EQ(1u, hidl_radio_mode_info2->ifaceInfos.size());
-    auto hidl_iface_info2 = hidl_radio_mode_info2->ifaceInfos[0];
-    EXPECT_EQ(legacy_iface_info2.name, hidl_iface_info2.name);
-    EXPECT_EQ(static_cast<uint32_t>(legacy_iface_info2.channel),
-              hidl_iface_info2.channel);
-}
-
-TEST_F(HidlStructUtilTest, canConvertLegacyLinkLayerStatsToHidl) {
-    legacy_hal::LinkLayerStats legacy_stats{};
-    legacy_stats.radios.push_back(legacy_hal::LinkLayerRadioStats{});
-    legacy_stats.radios.push_back(legacy_hal::LinkLayerRadioStats{});
-    legacy_stats.peers.push_back(legacy_hal::WifiPeerInfo{});
-    legacy_stats.peers.push_back(legacy_hal::WifiPeerInfo{});
-    legacy_stats.iface.beacon_rx = rand();
-    legacy_stats.iface.rssi_mgmt = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].rx_mpdu = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].tx_mpdu = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].mpdu_lost = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].retries = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].contention_time_min = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].contention_time_max = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].contention_time_avg = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].contention_num_samples =
-        rand();
-
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].rx_mpdu = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].tx_mpdu = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].mpdu_lost = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].retries = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].contention_time_min = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].contention_time_max = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].contention_time_avg = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].contention_num_samples =
-        rand();
-
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].rx_mpdu = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].tx_mpdu = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].mpdu_lost = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].retries = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].contention_time_min = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].contention_time_max = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].contention_time_avg = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].contention_num_samples =
-        rand();
-
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].rx_mpdu = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].tx_mpdu = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].mpdu_lost = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].retries = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].contention_time_min = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].contention_time_max = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].contention_time_avg = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].contention_num_samples =
-        rand();
-
-    legacy_stats.iface.info.time_slicing_duty_cycle_percent = rand();
-    legacy_stats.iface.num_peers = 1;
-
-    for (auto& radio : legacy_stats.radios) {
-        radio.stats.radio = rand();
-        radio.stats.on_time = rand();
-        radio.stats.tx_time = rand();
-        radio.stats.rx_time = rand();
-        radio.stats.on_time_scan = rand();
-        radio.stats.on_time_nbd = rand();
-        radio.stats.on_time_gscan = rand();
-        radio.stats.on_time_roam_scan = rand();
-        radio.stats.on_time_pno_scan = rand();
-        radio.stats.on_time_hs20 = rand();
-        for (int i = 0; i < 4; i++) {
-            radio.tx_time_per_levels.push_back(rand());
-        }
-
-        legacy_hal::wifi_channel_stat channel_stat1 = {
-            .channel = {legacy_hal::WIFI_CHAN_WIDTH_20, 2437, 2437, 0},
-            .on_time = 0x1111,
-            .cca_busy_time = 0x55,
-        };
-        legacy_hal::wifi_channel_stat channel_stat2 = {
-            .channel = {legacy_hal::WIFI_CHAN_WIDTH_20, 5180, 5180, 0},
-            .on_time = 0x2222,
-            .cca_busy_time = 0x66,
-        };
-        radio.channel_stats.push_back(channel_stat1);
-        radio.channel_stats.push_back(channel_stat2);
-    }
-
-    for (auto& peer : legacy_stats.peers) {
-        peer.peer_info.bssload.sta_count = rand();
-        peer.peer_info.bssload.chan_util = rand();
-        wifi_rate_stat rate_stat1 = {
-            .rate = {3, 1, 2, 5, 0, 0},
-            .tx_mpdu = 0,
-            .rx_mpdu = 1,
-            .mpdu_lost = 2,
-            .retries = 3,
-            .retries_short = 4,
-            .retries_long = 5,
-        };
-        wifi_rate_stat rate_stat2 = {
-            .rate = {2, 2, 1, 6, 0, 1},
-            .tx_mpdu = 6,
-            .rx_mpdu = 7,
-            .mpdu_lost = 8,
-            .retries = 9,
-            .retries_short = 10,
-            .retries_long = 11,
-        };
-        peer.rate_stats.push_back(rate_stat1);
-        peer.rate_stats.push_back(rate_stat2);
-    }
-
-    V1_5::StaLinkLayerStats converted{};
-    hidl_struct_util::convertLegacyLinkLayerStatsToHidl(legacy_stats,
-                                                        &converted);
-    EXPECT_EQ(legacy_stats.iface.beacon_rx, converted.iface.V1_0.beaconRx);
-    EXPECT_EQ(legacy_stats.iface.rssi_mgmt, converted.iface.V1_0.avgRssiMgmt);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].rx_mpdu,
-              converted.iface.V1_0.wmeBePktStats.rxMpdu);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].tx_mpdu,
-              converted.iface.V1_0.wmeBePktStats.txMpdu);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].mpdu_lost,
-              converted.iface.V1_0.wmeBePktStats.lostMpdu);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].retries,
-              converted.iface.V1_0.wmeBePktStats.retries);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].contention_time_min,
-              converted.iface.wmeBeContentionTimeStats.contentionTimeMinInUsec);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].contention_time_max,
-              converted.iface.wmeBeContentionTimeStats.contentionTimeMaxInUsec);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].contention_time_avg,
-              converted.iface.wmeBeContentionTimeStats.contentionTimeAvgInUsec);
-    EXPECT_EQ(
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].contention_num_samples,
-        converted.iface.wmeBeContentionTimeStats.contentionNumSamples);
-
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].rx_mpdu,
-              converted.iface.V1_0.wmeBkPktStats.rxMpdu);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].tx_mpdu,
-              converted.iface.V1_0.wmeBkPktStats.txMpdu);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].mpdu_lost,
-              converted.iface.V1_0.wmeBkPktStats.lostMpdu);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].retries,
-              converted.iface.V1_0.wmeBkPktStats.retries);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].contention_time_min,
-              converted.iface.wmeBkContentionTimeStats.contentionTimeMinInUsec);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].contention_time_max,
-              converted.iface.wmeBkContentionTimeStats.contentionTimeMaxInUsec);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].contention_time_avg,
-              converted.iface.wmeBkContentionTimeStats.contentionTimeAvgInUsec);
-    EXPECT_EQ(
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].contention_num_samples,
-        converted.iface.wmeBkContentionTimeStats.contentionNumSamples);
-
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].rx_mpdu,
-              converted.iface.V1_0.wmeViPktStats.rxMpdu);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].tx_mpdu,
-              converted.iface.V1_0.wmeViPktStats.txMpdu);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].mpdu_lost,
-              converted.iface.V1_0.wmeViPktStats.lostMpdu);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].retries,
-              converted.iface.V1_0.wmeViPktStats.retries);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].contention_time_min,
-              converted.iface.wmeViContentionTimeStats.contentionTimeMinInUsec);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].contention_time_max,
-              converted.iface.wmeViContentionTimeStats.contentionTimeMaxInUsec);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].contention_time_avg,
-              converted.iface.wmeViContentionTimeStats.contentionTimeAvgInUsec);
-    EXPECT_EQ(
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].contention_num_samples,
-        converted.iface.wmeViContentionTimeStats.contentionNumSamples);
-
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].rx_mpdu,
-              converted.iface.V1_0.wmeVoPktStats.rxMpdu);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].tx_mpdu,
-              converted.iface.V1_0.wmeVoPktStats.txMpdu);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].mpdu_lost,
-              converted.iface.V1_0.wmeVoPktStats.lostMpdu);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].retries,
-              converted.iface.V1_0.wmeVoPktStats.retries);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].contention_time_min,
-              converted.iface.wmeVoContentionTimeStats.contentionTimeMinInUsec);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].contention_time_max,
-              converted.iface.wmeVoContentionTimeStats.contentionTimeMaxInUsec);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].contention_time_avg,
-              converted.iface.wmeVoContentionTimeStats.contentionTimeAvgInUsec);
-    EXPECT_EQ(
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].contention_num_samples,
-        converted.iface.wmeVoContentionTimeStats.contentionNumSamples);
-
-    EXPECT_EQ(legacy_stats.iface.info.time_slicing_duty_cycle_percent,
-              converted.iface.timeSliceDutyCycleInPercent);
-
-    EXPECT_EQ(legacy_stats.radios.size(), converted.radios.size());
-    for (size_t i = 0; i < legacy_stats.radios.size(); i++) {
-        EXPECT_EQ(legacy_stats.radios[i].stats.radio,
-                  converted.radios[i].radioId);
-        EXPECT_EQ(legacy_stats.radios[i].stats.on_time,
-                  converted.radios[i].V1_3.V1_0.onTimeInMs);
-        EXPECT_EQ(legacy_stats.radios[i].stats.tx_time,
-                  converted.radios[i].V1_3.V1_0.txTimeInMs);
-        EXPECT_EQ(legacy_stats.radios[i].stats.rx_time,
-                  converted.radios[i].V1_3.V1_0.rxTimeInMs);
-        EXPECT_EQ(legacy_stats.radios[i].stats.on_time_scan,
-                  converted.radios[i].V1_3.V1_0.onTimeInMsForScan);
-        EXPECT_EQ(legacy_stats.radios[i].tx_time_per_levels.size(),
-                  converted.radios[i].V1_3.V1_0.txTimeInMsPerLevel.size());
-        for (size_t j = 0; j < legacy_stats.radios[i].tx_time_per_levels.size();
-             j++) {
-            EXPECT_EQ(legacy_stats.radios[i].tx_time_per_levels[j],
-                      converted.radios[i].V1_3.V1_0.txTimeInMsPerLevel[j]);
-        }
-        EXPECT_EQ(legacy_stats.radios[i].stats.on_time_nbd,
-                  converted.radios[i].V1_3.onTimeInMsForNanScan);
-        EXPECT_EQ(legacy_stats.radios[i].stats.on_time_gscan,
-                  converted.radios[i].V1_3.onTimeInMsForBgScan);
-        EXPECT_EQ(legacy_stats.radios[i].stats.on_time_roam_scan,
-                  converted.radios[i].V1_3.onTimeInMsForRoamScan);
-        EXPECT_EQ(legacy_stats.radios[i].stats.on_time_pno_scan,
-                  converted.radios[i].V1_3.onTimeInMsForPnoScan);
-        EXPECT_EQ(legacy_stats.radios[i].stats.on_time_hs20,
-                  converted.radios[i].V1_3.onTimeInMsForHs20Scan);
-        EXPECT_EQ(legacy_stats.radios[i].channel_stats.size(),
-                  converted.radios[i].V1_3.channelStats.size());
-        for (size_t k = 0; k < legacy_stats.radios[i].channel_stats.size();
-             k++) {
-            auto& legacy_channel_st = legacy_stats.radios[i].channel_stats[k];
-            EXPECT_EQ(WifiChannelWidthInMhz::WIDTH_20,
-                      converted.radios[i].V1_3.channelStats[k].channel.width);
-            EXPECT_EQ(
-                WifiChannelInMhz(legacy_channel_st.channel.center_freq),
-                converted.radios[i].V1_3.channelStats[k].channel.centerFreq);
-            EXPECT_EQ(
-                WifiChannelInMhz(legacy_channel_st.channel.center_freq0),
-                converted.radios[i].V1_3.channelStats[k].channel.centerFreq0);
-            EXPECT_EQ(
-                WifiChannelInMhz(legacy_channel_st.channel.center_freq1),
-                converted.radios[i].V1_3.channelStats[k].channel.centerFreq1);
-            EXPECT_EQ(legacy_channel_st.cca_busy_time,
-                      converted.radios[i].V1_3.channelStats[k].ccaBusyTimeInMs);
-            EXPECT_EQ(legacy_channel_st.on_time,
-                      converted.radios[i].V1_3.channelStats[k].onTimeInMs);
-        }
-    }
-
-    EXPECT_EQ(legacy_stats.peers.size(), converted.iface.peers.size());
-    for (size_t i = 0; i < legacy_stats.peers.size(); i++) {
-        EXPECT_EQ(legacy_stats.peers[i].peer_info.bssload.sta_count,
-                  converted.iface.peers[i].staCount);
-        EXPECT_EQ(legacy_stats.peers[i].peer_info.bssload.chan_util,
-                  converted.iface.peers[i].chanUtil);
-        for (size_t j = 0; j < legacy_stats.peers[i].rate_stats.size(); j++) {
-            EXPECT_EQ(legacy_stats.peers[i].rate_stats[j].rate.preamble,
-                      (uint32_t)converted.iface.peers[i]
-                          .rateStats[j]
-                          .rateInfo.preamble);
-            EXPECT_EQ(
-                legacy_stats.peers[i].rate_stats[j].rate.nss,
-                (uint32_t)converted.iface.peers[i].rateStats[j].rateInfo.nss);
-            EXPECT_EQ(
-                legacy_stats.peers[i].rate_stats[j].rate.bw,
-                (uint32_t)converted.iface.peers[i].rateStats[j].rateInfo.bw);
-            EXPECT_EQ(
-                legacy_stats.peers[i].rate_stats[j].rate.rateMcsIdx,
-                converted.iface.peers[i].rateStats[j].rateInfo.rateMcsIdx);
-            EXPECT_EQ(legacy_stats.peers[i].rate_stats[j].tx_mpdu,
-                      converted.iface.peers[i].rateStats[j].txMpdu);
-            EXPECT_EQ(legacy_stats.peers[i].rate_stats[j].rx_mpdu,
-                      converted.iface.peers[i].rateStats[j].rxMpdu);
-            EXPECT_EQ(legacy_stats.peers[i].rate_stats[j].mpdu_lost,
-                      converted.iface.peers[i].rateStats[j].mpduLost);
-            EXPECT_EQ(legacy_stats.peers[i].rate_stats[j].retries,
-                      converted.iface.peers[i].rateStats[j].retries);
-        }
-    }
-}
-
-TEST_F(HidlStructUtilTest, CanConvertLegacyFeaturesToHidl) {
-    using HidlChipCaps = V1_3::IWifiChip::ChipCapabilityMask;
-
-    uint32_t hidle_caps;
-
-    uint32_t legacy_feature_set =
-        WIFI_FEATURE_D2D_RTT | WIFI_FEATURE_SET_LATENCY_MODE;
-    uint32_t legacy_logger_feature_set =
-        legacy_hal::WIFI_LOGGER_DRIVER_DUMP_SUPPORTED;
-
-    ASSERT_TRUE(hidl_struct_util::convertLegacyFeaturesToHidlChipCapabilities(
-        legacy_feature_set, legacy_logger_feature_set, &hidle_caps));
-
-    EXPECT_EQ(HidlChipCaps::DEBUG_RING_BUFFER_VENDOR_DATA |
-                  HidlChipCaps::DEBUG_HOST_WAKE_REASON_STATS |
-                  HidlChipCaps::DEBUG_ERROR_ALERTS | HidlChipCaps::D2D_RTT |
-                  HidlChipCaps::SET_LATENCY_MODE |
-                  HidlChipCaps::DEBUG_MEMORY_DRIVER_DUMP,
-              hidle_caps);
-}
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.5/default/tests/mock_interface_tool.h b/wifi/1.5/default/tests/mock_interface_tool.h
deleted file mode 100644
index 0f17551..0000000
--- a/wifi/1.5/default/tests/mock_interface_tool.h
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef MOCK_INTERFACE_TOOL_H
-#define MOCK_INTERFACE_TOOL_H
-
-#include <gmock/gmock.h>
-#include <wifi_system/interface_tool.h>
-
-namespace android {
-namespace wifi_system {
-
-class MockInterfaceTool : public InterfaceTool {
-   public:
-    MockInterfaceTool();
-
-    MOCK_METHOD1(GetUpState, bool(const char* if_name));
-    MOCK_METHOD2(SetUpState, bool(const char* if_name, bool request_up));
-    MOCK_METHOD1(SetWifiUpState, bool(bool request_up));
-    MOCK_METHOD2(SetMacAddress,
-                 bool(const char* if_name,
-                      const std::array<uint8_t, ETH_ALEN>& address));
-    MOCK_METHOD1(GetFactoryMacAddress,
-                 std::array<uint8_t, ETH_ALEN>(const char* if_name));
-
-};  // class MockInterfaceTool
-
-}  // namespace wifi_system
-}  // namespace android
-
-#endif  // MOCK_INTERFACE_TOOL_H
diff --git a/wifi/1.5/default/tests/mock_wifi_feature_flags.cpp b/wifi/1.5/default/tests/mock_wifi_feature_flags.cpp
deleted file mode 100644
index 2f66ba1..0000000
--- a/wifi/1.5/default/tests/mock_wifi_feature_flags.cpp
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <gmock/gmock.h>
-
-#include "mock_wifi_feature_flags.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-namespace feature_flags {
-
-MockWifiFeatureFlags::MockWifiFeatureFlags() {}
-
-}  // namespace feature_flags
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.5/default/tests/mock_wifi_feature_flags.h b/wifi/1.5/default/tests/mock_wifi_feature_flags.h
deleted file mode 100644
index c3877ed..0000000
--- a/wifi/1.5/default/tests/mock_wifi_feature_flags.h
+++ /dev/null
@@ -1,48 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef MOCK_WIFI_FEATURE_FLAGS_H_
-#define MOCK_WIFI_FEATURE_FLAGS_H_
-
-#include <gmock/gmock.h>
-#undef NAN  // This is weird, NAN is defined in bionic/libc/include/math.h:38
-
-#include "wifi_feature_flags.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-namespace feature_flags {
-
-class MockWifiFeatureFlags : public WifiFeatureFlags {
-   public:
-    MockWifiFeatureFlags();
-
-    MOCK_METHOD1(getChipModes,
-                 std::vector<V1_0::IWifiChip::ChipMode>(bool is_primary));
-    MOCK_METHOD0(isApMacRandomizationDisabled, bool());
-};
-
-}  // namespace feature_flags
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // MOCK_WIFI_FEATURE_FLAGS_H_
diff --git a/wifi/1.5/default/tests/mock_wifi_iface_util.cpp b/wifi/1.5/default/tests/mock_wifi_iface_util.cpp
deleted file mode 100644
index b101c4a..0000000
--- a/wifi/1.5/default/tests/mock_wifi_iface_util.cpp
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-#include <android-base/macros.h>
-#include <gmock/gmock.h>
-
-#undef NAN  // This is weird, NAN is defined in bionic/libc/include/math.h:38
-#include "mock_wifi_iface_util.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-namespace iface_util {
-
-MockWifiIfaceUtil::MockWifiIfaceUtil(
-    const std::weak_ptr<wifi_system::InterfaceTool> iface_tool,
-    const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal)
-    : WifiIfaceUtil(iface_tool, legacy_hal) {}
-}  // namespace iface_util
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.5/default/tests/mock_wifi_iface_util.h b/wifi/1.5/default/tests/mock_wifi_iface_util.h
deleted file mode 100644
index 6d5f59c..0000000
--- a/wifi/1.5/default/tests/mock_wifi_iface_util.h
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef MOCK_WIFI_IFACE_UTIL_H_
-#define MOCK_WIFI_IFACE_UTIL_H_
-
-#include <gmock/gmock.h>
-
-#include "wifi_iface_util.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-namespace iface_util {
-
-class MockWifiIfaceUtil : public WifiIfaceUtil {
-   public:
-    MockWifiIfaceUtil(
-        const std::weak_ptr<wifi_system::InterfaceTool> iface_tool,
-        const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal);
-    MOCK_METHOD1(getFactoryMacAddress,
-                 std::array<uint8_t, 6>(const std::string&));
-    MOCK_METHOD2(setMacAddress,
-                 bool(const std::string&, const std::array<uint8_t, 6>&));
-    MOCK_METHOD0(getOrCreateRandomMacAddress, std::array<uint8_t, 6>());
-    MOCK_METHOD2(registerIfaceEventHandlers,
-                 void(const std::string&, IfaceEventHandlers));
-    MOCK_METHOD1(unregisterIfaceEventHandlers, void(const std::string&));
-    MOCK_METHOD2(setUpState, bool(const std::string&, bool));
-    MOCK_METHOD1(ifNameToIndex, unsigned(const std::string&));
-};
-}  // namespace iface_util
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // MOCK_WIFI_IFACE_UTIL_H_
diff --git a/wifi/1.5/default/tests/mock_wifi_legacy_hal.cpp b/wifi/1.5/default/tests/mock_wifi_legacy_hal.cpp
deleted file mode 100644
index d13c556..0000000
--- a/wifi/1.5/default/tests/mock_wifi_legacy_hal.cpp
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-#include <android-base/macros.h>
-#include <gmock/gmock.h>
-
-#undef NAN  // This is weird, NAN is defined in bionic/libc/include/math.h:38
-#include "mock_wifi_legacy_hal.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-namespace legacy_hal {
-
-MockWifiLegacyHal::MockWifiLegacyHal(
-    const std::weak_ptr<wifi_system::InterfaceTool> iface_tool,
-    const wifi_hal_fn& fn, bool is_primary)
-    : WifiLegacyHal(iface_tool, fn, is_primary) {}
-}  // namespace legacy_hal
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.5/default/tests/mock_wifi_legacy_hal.h b/wifi/1.5/default/tests/mock_wifi_legacy_hal.h
deleted file mode 100644
index 826b35f..0000000
--- a/wifi/1.5/default/tests/mock_wifi_legacy_hal.h
+++ /dev/null
@@ -1,74 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef MOCK_WIFI_LEGACY_HAL_H_
-#define MOCK_WIFI_LEGACY_HAL_H_
-
-#include <gmock/gmock.h>
-
-#include "wifi_legacy_hal.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-namespace legacy_hal {
-
-class MockWifiLegacyHal : public WifiLegacyHal {
-   public:
-    MockWifiLegacyHal(
-        const std::weak_ptr<wifi_system::InterfaceTool> iface_tool,
-        const wifi_hal_fn& fn, bool is_primary);
-    MOCK_METHOD0(initialize, wifi_error());
-    MOCK_METHOD0(start, wifi_error());
-    MOCK_METHOD2(stop, wifi_error(std::unique_lock<std::recursive_mutex>*,
-                                  const std::function<void()>&));
-    MOCK_METHOD2(setDfsFlag, wifi_error(const std::string&, bool));
-    MOCK_METHOD2(registerRadioModeChangeCallbackHandler,
-                 wifi_error(const std::string&,
-                            const on_radio_mode_change_callback&));
-    MOCK_METHOD1(getFirmwareVersion, std::pair<wifi_error, std::string>(
-                                         const std::string& iface_name));
-    MOCK_METHOD1(getDriverVersion, std::pair<wifi_error, std::string>(
-                                       const std::string& iface_name));
-
-    MOCK_METHOD2(selectTxPowerScenario,
-                 wifi_error(const std::string& iface_name,
-                            wifi_power_scenario scenario));
-    MOCK_METHOD1(resetTxPowerScenario,
-                 wifi_error(const std::string& iface_name));
-    MOCK_METHOD2(nanRegisterCallbackHandlers,
-                 wifi_error(const std::string&, const NanCallbackHandlers&));
-    MOCK_METHOD2(nanDisableRequest,
-                 wifi_error(const std::string&, transaction_id));
-    MOCK_METHOD3(nanDataInterfaceDelete,
-                 wifi_error(const std::string&, transaction_id,
-                            const std::string&));
-    MOCK_METHOD2(createVirtualInterface,
-                 wifi_error(const std::string& ifname,
-                            wifi_interface_type iftype));
-    MOCK_METHOD1(deleteVirtualInterface, wifi_error(const std::string& ifname));
-    MOCK_METHOD0(waitForDriverReady, wifi_error());
-};
-}  // namespace legacy_hal
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // MOCK_WIFI_LEGACY_HAL_H_
diff --git a/wifi/1.5/default/tests/mock_wifi_mode_controller.cpp b/wifi/1.5/default/tests/mock_wifi_mode_controller.cpp
deleted file mode 100644
index e7ab22a..0000000
--- a/wifi/1.5/default/tests/mock_wifi_mode_controller.cpp
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-#include <android-base/macros.h>
-#include <gmock/gmock.h>
-
-#undef NAN  // This is weird, NAN is defined in bionic/libc/include/math.h:38
-#include "mock_wifi_mode_controller.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-namespace mode_controller {
-
-MockWifiModeController::MockWifiModeController() : WifiModeController() {}
-}  // namespace mode_controller
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.5/default/tests/mock_wifi_mode_controller.h b/wifi/1.5/default/tests/mock_wifi_mode_controller.h
deleted file mode 100644
index b9151f1..0000000
--- a/wifi/1.5/default/tests/mock_wifi_mode_controller.h
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef MOCK_WIFI_MODE_CONTROLLER_H_
-#define MOCK_WIFI_MODE_CONTROLLER_H_
-
-#include <gmock/gmock.h>
-
-#include "wifi_mode_controller.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-namespace mode_controller {
-
-class MockWifiModeController : public WifiModeController {
-   public:
-    MockWifiModeController();
-    MOCK_METHOD0(initialize, bool());
-    MOCK_METHOD1(changeFirmwareMode, bool(IfaceType));
-    MOCK_METHOD1(isFirmwareModeChangeNeeded, bool(IfaceType));
-    MOCK_METHOD0(deinitialize, bool());
-};
-}  // namespace mode_controller
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // MOCK_WIFI_MODE_CONTROLLER_H_
diff --git a/wifi/1.5/default/tests/ringbuffer_unit_tests.cpp b/wifi/1.5/default/tests/ringbuffer_unit_tests.cpp
deleted file mode 100644
index 6fd34ee..0000000
--- a/wifi/1.5/default/tests/ringbuffer_unit_tests.cpp
+++ /dev/null
@@ -1,97 +0,0 @@
-/*
- * Copyright (C) 2018, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <gmock/gmock.h>
-
-#include "ringbuffer.h"
-
-using testing::Return;
-using testing::Test;
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-
-class RingbufferTest : public Test {
-   public:
-    const uint32_t maxBufferSize_ = 10;
-    Ringbuffer buffer_{maxBufferSize_};
-};
-
-TEST_F(RingbufferTest, CreateEmptyBuffer) {
-    ASSERT_TRUE(buffer_.getData().empty());
-}
-
-TEST_F(RingbufferTest, CanUseFullBufferCapacity) {
-    const std::vector<uint8_t> input(maxBufferSize_ / 2, '0');
-    const std::vector<uint8_t> input2(maxBufferSize_ / 2, '1');
-    buffer_.append(input);
-    buffer_.append(input2);
-    ASSERT_EQ(2u, buffer_.getData().size());
-    EXPECT_EQ(input, buffer_.getData().front());
-    EXPECT_EQ(input2, buffer_.getData().back());
-}
-
-TEST_F(RingbufferTest, OldDataIsRemovedOnOverflow) {
-    const std::vector<uint8_t> input(maxBufferSize_ / 2, '0');
-    const std::vector<uint8_t> input2(maxBufferSize_ / 2, '1');
-    const std::vector<uint8_t> input3 = {'G'};
-    buffer_.append(input);
-    buffer_.append(input2);
-    buffer_.append(input3);
-    ASSERT_EQ(2u, buffer_.getData().size());
-    EXPECT_EQ(input2, buffer_.getData().front());
-    EXPECT_EQ(input3, buffer_.getData().back());
-}
-
-TEST_F(RingbufferTest, MultipleOldDataIsRemovedOnOverflow) {
-    const std::vector<uint8_t> input(maxBufferSize_ / 2, '0');
-    const std::vector<uint8_t> input2(maxBufferSize_ / 2, '1');
-    const std::vector<uint8_t> input3(maxBufferSize_, '2');
-    buffer_.append(input);
-    buffer_.append(input2);
-    buffer_.append(input3);
-    ASSERT_EQ(1u, buffer_.getData().size());
-    EXPECT_EQ(input3, buffer_.getData().front());
-}
-
-TEST_F(RingbufferTest, AppendingEmptyBufferDoesNotAddGarbage) {
-    const std::vector<uint8_t> input = {};
-    buffer_.append(input);
-    ASSERT_TRUE(buffer_.getData().empty());
-}
-
-TEST_F(RingbufferTest, OversizedAppendIsDropped) {
-    const std::vector<uint8_t> input(maxBufferSize_ + 1, '0');
-    buffer_.append(input);
-    ASSERT_TRUE(buffer_.getData().empty());
-}
-
-TEST_F(RingbufferTest, OversizedAppendDoesNotDropExistingData) {
-    const std::vector<uint8_t> input(maxBufferSize_, '0');
-    const std::vector<uint8_t> input2(maxBufferSize_ + 1, '1');
-    buffer_.append(input);
-    buffer_.append(input2);
-    ASSERT_EQ(1u, buffer_.getData().size());
-    EXPECT_EQ(input, buffer_.getData().front());
-}
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.5/default/tests/wifi_chip_unit_tests.cpp b/wifi/1.5/default/tests/wifi_chip_unit_tests.cpp
deleted file mode 100644
index 0ad6f3e..0000000
--- a/wifi/1.5/default/tests/wifi_chip_unit_tests.cpp
+++ /dev/null
@@ -1,905 +0,0 @@
-/*
- * Copyright (C) 2017, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-#include <android-base/macros.h>
-#include <cutils/properties.h>
-#include <gmock/gmock.h>
-
-#undef NAN  // This is weird, NAN is defined in bionic/libc/include/math.h:38
-#include "wifi_chip.h"
-
-#include "mock_interface_tool.h"
-#include "mock_wifi_feature_flags.h"
-#include "mock_wifi_iface_util.h"
-#include "mock_wifi_legacy_hal.h"
-#include "mock_wifi_mode_controller.h"
-
-using testing::NiceMock;
-using testing::Return;
-using testing::Test;
-
-namespace {
-using android::hardware::wifi::V1_0::ChipId;
-
-constexpr ChipId kFakeChipId = 5;
-}  // namespace
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-
-class WifiChipTest : public Test {
-   protected:
-    void setupV1IfaceCombination() {
-        // clang-format off
-        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinationsSta = {
-            {{{{IfaceType::STA}, 1}, {{IfaceType::P2P}, 1}}}
-        };
-        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinationsAp = {
-            {{{{IfaceType::AP}, 1}}}
-        };
-        const std::vector<V1_0::IWifiChip::ChipMode> modes = {
-            {feature_flags::chip_mode_ids::kV1Sta, combinationsSta},
-            {feature_flags::chip_mode_ids::kV1Ap, combinationsAp}
-        };
-        // clang-format on
-        EXPECT_CALL(*feature_flags_, getChipModes(true))
-            .WillRepeatedly(testing::Return(modes));
-    }
-
-    void setupV1_AwareIfaceCombination() {
-        // clang-format off
-        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinationsSta = {
-            {{{{IfaceType::STA}, 1}, {{IfaceType::P2P, IfaceType::NAN}, 1}}}
-        };
-        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinationsAp = {
-            {{{{IfaceType::AP}, 1}}}
-        };
-        const std::vector<V1_0::IWifiChip::ChipMode> modes = {
-            {feature_flags::chip_mode_ids::kV1Sta, combinationsSta},
-            {feature_flags::chip_mode_ids::kV1Ap, combinationsAp}
-        };
-        // clang-format on
-        EXPECT_CALL(*feature_flags_, getChipModes(true))
-            .WillRepeatedly(testing::Return(modes));
-    }
-
-    void setupV1_AwareDisabledApIfaceCombination() {
-        // clang-format off
-        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinationsSta = {
-            {{{{IfaceType::STA}, 1}, {{IfaceType::P2P, IfaceType::NAN}, 1}}}
-        };
-        const std::vector<V1_0::IWifiChip::ChipMode> modes = {
-            {feature_flags::chip_mode_ids::kV1Sta, combinationsSta}
-        };
-        // clang-format on
-        EXPECT_CALL(*feature_flags_, getChipModes(true))
-            .WillRepeatedly(testing::Return(modes));
-    }
-
-    void setupV2_AwareIfaceCombination() {
-        // clang-format off
-        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinations = {
-            {{{{IfaceType::STA}, 1}, {{IfaceType::AP}, 1}}},
-            {{{{IfaceType::STA}, 1}, {{IfaceType::P2P, IfaceType::NAN}, 1}}}
-        };
-        const std::vector<V1_0::IWifiChip::ChipMode> modes = {
-            {feature_flags::chip_mode_ids::kV3, combinations}
-        };
-        // clang-format on
-        EXPECT_CALL(*feature_flags_, getChipModes(true))
-            .WillRepeatedly(testing::Return(modes));
-    }
-
-    void setupV2_AwareDisabledApIfaceCombination() {
-        // clang-format off
-        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinations = {
-            {{{{IfaceType::STA}, 1}, {{IfaceType::P2P, IfaceType::NAN}, 1}}}
-        };
-        const std::vector<V1_0::IWifiChip::ChipMode> modes = {
-            {feature_flags::chip_mode_ids::kV3, combinations}
-        };
-        // clang-format on
-        EXPECT_CALL(*feature_flags_, getChipModes(true))
-            .WillRepeatedly(testing::Return(modes));
-    }
-
-    void setup_MultiIfaceCombination() {
-        // clang-format off
-        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinations = {
-            {{{{IfaceType::STA}, 3}, {{IfaceType::AP}, 1}}}
-        };
-        const std::vector<V1_0::IWifiChip::ChipMode> modes = {
-            {feature_flags::chip_mode_ids::kV3, combinations}
-        };
-        // clang-format on
-        EXPECT_CALL(*feature_flags_, getChipModes(true))
-            .WillRepeatedly(testing::Return(modes));
-    }
-
-    void assertNumberOfModes(uint32_t num_modes) {
-        chip_->getAvailableModes(
-            [num_modes](const WifiStatus& status,
-                        const std::vector<WifiChip::ChipMode>& modes) {
-                ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-                // V2_Aware has 1 mode of operation.
-                ASSERT_EQ(num_modes, modes.size());
-            });
-    }
-
-    void findModeAndConfigureForIfaceType(const IfaceType& type) {
-        // This should be aligned with kInvalidModeId in wifi_chip.cpp.
-        ChipModeId mode_id = UINT32_MAX;
-        chip_->getAvailableModes(
-            [&mode_id, &type](const WifiStatus& status,
-                              const std::vector<WifiChip::ChipMode>& modes) {
-                ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-                for (const auto& mode : modes) {
-                    for (const auto& combination : mode.availableCombinations) {
-                        for (const auto& limit : combination.limits) {
-                            if (limit.types.end() !=
-                                std::find(limit.types.begin(),
-                                          limit.types.end(), type)) {
-                                mode_id = mode.id;
-                            }
-                        }
-                    }
-                }
-            });
-        ASSERT_NE(UINT32_MAX, mode_id);
-
-        chip_->configureChip(mode_id, [](const WifiStatus& status) {
-            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-        });
-    }
-
-    // Returns an empty string on error.
-    std::string createIface(const IfaceType& type) {
-        std::string iface_name;
-        if (type == IfaceType::AP) {
-            chip_->createApIface(
-                [&iface_name](const WifiStatus& status,
-                              const sp<V1_0::IWifiApIface>& iface) {
-                    if (WifiStatusCode::SUCCESS == status.code) {
-                        ASSERT_NE(iface.get(), nullptr);
-                        iface->getName([&iface_name](const WifiStatus& status,
-                                                     const hidl_string& name) {
-                            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-                            iface_name = name.c_str();
-                        });
-                    }
-                });
-        } else if (type == IfaceType::NAN) {
-            chip_->createNanIface(
-                [&iface_name](
-                    const WifiStatus& status,
-                    const sp<android::hardware::wifi::V1_0::IWifiNanIface>&
-                        iface) {
-                    if (WifiStatusCode::SUCCESS == status.code) {
-                        ASSERT_NE(iface.get(), nullptr);
-                        iface->getName([&iface_name](const WifiStatus& status,
-                                                     const hidl_string& name) {
-                            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-                            iface_name = name.c_str();
-                        });
-                    }
-                });
-        } else if (type == IfaceType::P2P) {
-            chip_->createP2pIface(
-                [&iface_name](const WifiStatus& status,
-                              const sp<IWifiP2pIface>& iface) {
-                    if (WifiStatusCode::SUCCESS == status.code) {
-                        ASSERT_NE(iface.get(), nullptr);
-                        iface->getName([&iface_name](const WifiStatus& status,
-                                                     const hidl_string& name) {
-                            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-                            iface_name = name.c_str();
-                        });
-                    }
-                });
-        } else if (type == IfaceType::STA) {
-            chip_->createStaIface(
-                [&iface_name](const WifiStatus& status,
-                              const sp<V1_0::IWifiStaIface>& iface) {
-                    if (WifiStatusCode::SUCCESS == status.code) {
-                        ASSERT_NE(iface.get(), nullptr);
-                        iface->getName([&iface_name](const WifiStatus& status,
-                                                     const hidl_string& name) {
-                            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-                            iface_name = name.c_str();
-                        });
-                    }
-                });
-        }
-        return iface_name;
-    }
-
-    void removeIface(const IfaceType& type, const std::string& iface_name) {
-        if (type == IfaceType::AP) {
-            chip_->removeApIface(iface_name, [](const WifiStatus& status) {
-                ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-            });
-        } else if (type == IfaceType::NAN) {
-            chip_->removeNanIface(iface_name, [](const WifiStatus& status) {
-                ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-            });
-        } else if (type == IfaceType::P2P) {
-            chip_->removeP2pIface(iface_name, [](const WifiStatus& status) {
-                ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-            });
-        } else if (type == IfaceType::STA) {
-            chip_->removeStaIface(iface_name, [](const WifiStatus& status) {
-                ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-            });
-        }
-    }
-
-    bool createRttController() {
-        bool success = false;
-        chip_->createRttController_1_4(
-            NULL, [&success](const WifiStatus& status,
-                             const sp<IWifiRttController>& rtt) {
-                if (WifiStatusCode::SUCCESS == status.code) {
-                    ASSERT_NE(rtt.get(), nullptr);
-                    success = true;
-                }
-            });
-        return success;
-    }
-
-    static void subsystemRestartHandler(const std::string& /*error*/) {}
-
-    sp<WifiChip> chip_;
-    ChipId chip_id_ = kFakeChipId;
-    legacy_hal::wifi_hal_fn fake_func_table_;
-    std::shared_ptr<NiceMock<wifi_system::MockInterfaceTool>> iface_tool_{
-        new NiceMock<wifi_system::MockInterfaceTool>};
-    std::shared_ptr<NiceMock<legacy_hal::MockWifiLegacyHal>> legacy_hal_{
-        new NiceMock<legacy_hal::MockWifiLegacyHal>(iface_tool_,
-                                                    fake_func_table_, true)};
-    std::shared_ptr<NiceMock<mode_controller::MockWifiModeController>>
-        mode_controller_{new NiceMock<mode_controller::MockWifiModeController>};
-    std::shared_ptr<NiceMock<iface_util::MockWifiIfaceUtil>> iface_util_{
-        new NiceMock<iface_util::MockWifiIfaceUtil>(iface_tool_, legacy_hal_)};
-    std::shared_ptr<NiceMock<feature_flags::MockWifiFeatureFlags>>
-        feature_flags_{new NiceMock<feature_flags::MockWifiFeatureFlags>};
-
-   public:
-    void SetUp() override {
-        chip_ =
-            new WifiChip(chip_id_, true, legacy_hal_, mode_controller_,
-                         iface_util_, feature_flags_, subsystemRestartHandler);
-
-        EXPECT_CALL(*mode_controller_, changeFirmwareMode(testing::_))
-            .WillRepeatedly(testing::Return(true));
-        EXPECT_CALL(*legacy_hal_, start())
-            .WillRepeatedly(testing::Return(legacy_hal::WIFI_SUCCESS));
-    }
-
-    void TearDown() override {
-        // Restore default system iface names (This should ideally be using a
-        // mock).
-        property_set("wifi.interface", "wlan0");
-        property_set("wifi.concurrent.interface", "wlan1");
-        property_set("wifi.aware.interface", nullptr);
-    }
-};
-
-////////// V1 Iface Combinations ////////////
-// Mode 1 - STA + P2P
-// Mode 2 - AP
-class WifiChipV1IfaceCombinationTest : public WifiChipTest {
-   public:
-    void SetUp() override {
-        setupV1IfaceCombination();
-        WifiChipTest::SetUp();
-        // V1 has 2 modes of operation.
-        assertNumberOfModes(2u);
-    }
-};
-
-TEST_F(WifiChipV1IfaceCombinationTest, StaMode_CreateSta_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
-}
-
-TEST_F(WifiChipV1IfaceCombinationTest, StaMode_CreateP2p_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
-}
-
-TEST_F(WifiChipV1IfaceCombinationTest, StaMode_CreateNan_ShouldFail) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
-}
-
-TEST_F(WifiChipV1IfaceCombinationTest, StaMode_CreateAp_ShouldFail) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_TRUE(createIface(IfaceType::AP).empty());
-}
-
-TEST_F(WifiChipV1IfaceCombinationTest, StaMode_CreateStaP2p_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
-}
-
-TEST_F(WifiChipV1IfaceCombinationTest, ApMode_CreateAp_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    ASSERT_EQ(createIface(IfaceType::AP), "wlan0");
-}
-
-TEST_F(WifiChipV1IfaceCombinationTest, ApMode_CreateSta_ShouldFail) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    ASSERT_TRUE(createIface(IfaceType::STA).empty());
-}
-
-TEST_F(WifiChipV1IfaceCombinationTest, ApMode_CreateP2p_ShouldFail) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    ASSERT_TRUE(createIface(IfaceType::STA).empty());
-}
-
-TEST_F(WifiChipV1IfaceCombinationTest, ApMode_CreateNan_ShouldFail) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
-}
-
-////////// V1 + Aware Iface Combinations ////////////
-// Mode 1 - STA + P2P/NAN
-// Mode 2 - AP
-class WifiChipV1_AwareIfaceCombinationTest : public WifiChipTest {
-   public:
-    void SetUp() override {
-        setupV1_AwareIfaceCombination();
-        WifiChipTest::SetUp();
-        // V1_Aware has 2 modes of operation.
-        assertNumberOfModes(2u);
-    }
-};
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest, StaMode_CreateSta_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest, StaMode_CreateP2p_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest, StaMode_CreateNan_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::NAN).empty());
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest, StaMode_CreateAp_ShouldFail) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_TRUE(createIface(IfaceType::AP).empty());
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest,
-       StaMode_CreateStaP2p_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest,
-       StaMode_CreateStaNan_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    ASSERT_FALSE(createIface(IfaceType::NAN).empty());
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest,
-       StaMode_CreateStaP2PNan_ShouldFail) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
-    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest,
-       StaMode_CreateStaNan_AfterP2pRemove_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    const auto p2p_iface_name = createIface(IfaceType::P2P);
-    ASSERT_FALSE(p2p_iface_name.empty());
-    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
-
-    // After removing P2P iface, NAN iface creation should succeed.
-    removeIface(IfaceType::P2P, p2p_iface_name);
-    ASSERT_FALSE(createIface(IfaceType::NAN).empty());
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest,
-       StaMode_CreateStaP2p_AfterNanRemove_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    const auto nan_iface_name = createIface(IfaceType::NAN);
-    ASSERT_FALSE(nan_iface_name.empty());
-    ASSERT_TRUE(createIface(IfaceType::P2P).empty());
-
-    // After removing NAN iface, P2P iface creation should succeed.
-    removeIface(IfaceType::NAN, nan_iface_name);
-    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest, ApMode_CreateAp_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    ASSERT_EQ(createIface(IfaceType::AP), "wlan0");
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest, ApMode_CreateSta_ShouldFail) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    ASSERT_TRUE(createIface(IfaceType::STA).empty());
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest, ApMode_CreateP2p_ShouldFail) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    ASSERT_TRUE(createIface(IfaceType::STA).empty());
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest, ApMode_CreateNan_ShouldFail) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest, RttControllerFlowStaModeNoSta) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_TRUE(createRttController());
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest, RttControllerFlowStaModeWithSta) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    ASSERT_TRUE(createRttController());
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest, RttControllerFlowApToSta) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    const auto ap_iface_name = createIface(IfaceType::AP);
-    ASSERT_FALSE(ap_iface_name.empty());
-    ASSERT_FALSE(createRttController());
-
-    removeIface(IfaceType::AP, ap_iface_name);
-
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_TRUE(createRttController());
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest, SelectTxScenarioWithOnlySta) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
-    EXPECT_CALL(*legacy_hal_, selectTxPowerScenario("wlan0", testing::_))
-        .WillOnce(testing::Return(legacy_hal::WIFI_SUCCESS));
-    chip_->selectTxPowerScenario_1_2(
-        V1_2::IWifiChip::TxPowerScenario::ON_HEAD_CELL_OFF,
-        [](const WifiStatus& status) {
-            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-        });
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest, SelectTxScenarioWithOnlyAp) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    ASSERT_EQ(createIface(IfaceType::AP), "wlan0");
-    EXPECT_CALL(*legacy_hal_, selectTxPowerScenario("wlan0", testing::_))
-        .WillOnce(testing::Return(legacy_hal::WIFI_SUCCESS));
-    chip_->selectTxPowerScenario_1_2(
-        V1_2::IWifiChip::TxPowerScenario::ON_HEAD_CELL_OFF,
-        [](const WifiStatus& status) {
-            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-        });
-}
-
-////////// V2 + Aware Iface Combinations ////////////
-// Mode 1 - STA + STA/AP
-//        - STA + P2P/NAN
-class WifiChipV2_AwareIfaceCombinationTest : public WifiChipTest {
-   public:
-    void SetUp() override {
-        setupV2_AwareIfaceCombination();
-        WifiChipTest::SetUp();
-        // V2_Aware has 1 mode of operation.
-        assertNumberOfModes(1u);
-    }
-};
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateSta_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateP2p_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateNan_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::NAN).empty());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateAp_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_EQ(createIface(IfaceType::AP), "wlan1");
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateStaSta_ShouldFail) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
-    ASSERT_TRUE(createIface(IfaceType::STA).empty());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateStaAp_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
-    ASSERT_EQ(createIface(IfaceType::AP), "wlan1");
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateApSta_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    ASSERT_EQ(createIface(IfaceType::AP), "wlan1");
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest,
-       CreateSta_AfterStaApRemove_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    const auto sta_iface_name = createIface(IfaceType::STA);
-    ASSERT_FALSE(sta_iface_name.empty());
-    const auto ap_iface_name = createIface(IfaceType::AP);
-    ASSERT_FALSE(ap_iface_name.empty());
-
-    ASSERT_TRUE(createIface(IfaceType::STA).empty());
-
-    // After removing AP & STA iface, STA iface creation should succeed.
-    removeIface(IfaceType::STA, sta_iface_name);
-    removeIface(IfaceType::AP, ap_iface_name);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateStaP2p_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateStaNan_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    ASSERT_FALSE(createIface(IfaceType::NAN).empty());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateStaP2PNan_ShouldFail) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
-    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest,
-       CreateStaNan_AfterP2pRemove_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    const auto p2p_iface_name = createIface(IfaceType::P2P);
-    ASSERT_FALSE(p2p_iface_name.empty());
-    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
-
-    // After removing P2P iface, NAN iface creation should succeed.
-    removeIface(IfaceType::P2P, p2p_iface_name);
-    ASSERT_FALSE(createIface(IfaceType::NAN).empty());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest,
-       CreateStaP2p_AfterNanRemove_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    const auto nan_iface_name = createIface(IfaceType::NAN);
-    ASSERT_FALSE(nan_iface_name.empty());
-    ASSERT_TRUE(createIface(IfaceType::P2P).empty());
-
-    // After removing NAN iface, P2P iface creation should succeed.
-    removeIface(IfaceType::NAN, nan_iface_name);
-    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateApNan_ShouldFail) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    ASSERT_FALSE(createIface(IfaceType::AP).empty());
-    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateApP2p_ShouldFail) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    ASSERT_FALSE(createIface(IfaceType::AP).empty());
-    ASSERT_TRUE(createIface(IfaceType::P2P).empty());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest,
-       StaMode_CreateStaNan_AfterP2pRemove_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    const auto p2p_iface_name = createIface(IfaceType::P2P);
-    ASSERT_FALSE(p2p_iface_name.empty());
-    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
-
-    // After removing P2P iface, NAN iface creation should succeed.
-    removeIface(IfaceType::P2P, p2p_iface_name);
-    ASSERT_FALSE(createIface(IfaceType::NAN).empty());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest,
-       StaMode_CreateStaP2p_AfterNanRemove_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    const auto nan_iface_name = createIface(IfaceType::NAN);
-    ASSERT_FALSE(nan_iface_name.empty());
-    ASSERT_TRUE(createIface(IfaceType::P2P).empty());
-
-    // After removing NAN iface, P2P iface creation should succeed.
-    removeIface(IfaceType::NAN, nan_iface_name);
-    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest,
-       CreateStaAp_EnsureDifferentIfaceNames) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    const auto sta_iface_name = createIface(IfaceType::STA);
-    const auto ap_iface_name = createIface(IfaceType::AP);
-    ASSERT_FALSE(sta_iface_name.empty());
-    ASSERT_FALSE(ap_iface_name.empty());
-    ASSERT_NE(sta_iface_name, ap_iface_name);
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, RttControllerFlowStaModeNoSta) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_TRUE(createRttController());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, RttControllerFlowStaModeWithSta) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    ASSERT_TRUE(createRttController());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, RttControllerFlow) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    ASSERT_FALSE(createIface(IfaceType::AP).empty());
-    ASSERT_TRUE(createRttController());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, SelectTxScenarioWithOnlySta) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
-    EXPECT_CALL(*legacy_hal_, selectTxPowerScenario("wlan0", testing::_))
-        .WillOnce(testing::Return(legacy_hal::WIFI_SUCCESS));
-    chip_->selectTxPowerScenario_1_2(
-        V1_2::IWifiChip::TxPowerScenario::ON_HEAD_CELL_OFF,
-        [](const WifiStatus& status) {
-            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-        });
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, SelectTxScenarioWithOnlyAp) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    ASSERT_EQ(createIface(IfaceType::AP), "wlan1");
-    EXPECT_CALL(*legacy_hal_, selectTxPowerScenario("wlan1", testing::_))
-        .WillOnce(testing::Return(legacy_hal::WIFI_SUCCESS));
-    chip_->selectTxPowerScenario_1_2(
-        V1_2::IWifiChip::TxPowerScenario::ON_HEAD_CELL_OFF,
-        [](const WifiStatus& status) {
-            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-        });
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest,
-       InvalidateAndRemoveNanOnStaRemove) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
-
-    // Create NAN iface
-    ASSERT_EQ(createIface(IfaceType::NAN), "wlan0");
-
-    // We should have 1 nan iface.
-    chip_->getNanIfaceNames(
-        [](const WifiStatus& status, const hidl_vec<hidl_string>& iface_names) {
-            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-            ASSERT_EQ(iface_names.size(), 1u);
-            ASSERT_EQ(iface_names[0], "wlan0");
-        });
-    // Retrieve the exact iface object.
-    sp<android::hardware::wifi::V1_0::IWifiNanIface> nan_iface;
-    chip_->getNanIface(
-        "wlan0",
-        [&nan_iface](
-            const WifiStatus& status,
-            const sp<android::hardware::wifi::V1_0::IWifiNanIface>& iface) {
-            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-            ASSERT_NE(iface.get(), nullptr);
-            nan_iface = iface;
-        });
-
-    // Remove the STA iface.
-    removeIface(IfaceType::STA, "wlan0");
-    // We should have 0 nan iface now.
-    chip_->getNanIfaceNames(
-        [](const WifiStatus& status, const hidl_vec<hidl_string>& iface_names) {
-            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-            ASSERT_EQ(iface_names.size(), 0u);
-        });
-    // Any operation on the nan iface object should return error now.
-    nan_iface->getName(
-        [](const WifiStatus& status, const std::string& /* iface_name */) {
-            ASSERT_EQ(WifiStatusCode::ERROR_WIFI_IFACE_INVALID, status.code);
-        });
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest,
-       InvalidateAndRemoveRttControllerOnStaRemove) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
-
-    // Create RTT controller
-    sp<IWifiRttController> rtt_controller;
-    chip_->createRttController_1_4(
-        NULL, [&rtt_controller](const WifiStatus& status,
-                                const sp<IWifiRttController>& rtt) {
-            if (WifiStatusCode::SUCCESS == status.code) {
-                ASSERT_NE(rtt.get(), nullptr);
-                rtt_controller = rtt;
-            }
-        });
-
-    // Remove the STA iface.
-    removeIface(IfaceType::STA, "wlan0");
-
-    // Any operation on the rtt controller object should return error now.
-    rtt_controller->getBoundIface(
-        [](const WifiStatus& status, const sp<IWifiIface>& /* iface */) {
-            ASSERT_EQ(WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
-                      status.code);
-        });
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateNanWithSharedNanIface) {
-    property_set("wifi.aware.interface", nullptr);
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
-    ASSERT_EQ(createIface(IfaceType::NAN), "wlan0");
-    removeIface(IfaceType::NAN, "wlan0");
-    EXPECT_CALL(*iface_util_, setUpState(testing::_, testing::_)).Times(0);
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateNanWithDedicatedNanIface) {
-    property_set("wifi.aware.interface", "aware0");
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
-    EXPECT_CALL(*iface_util_, ifNameToIndex("aware0"))
-        .WillOnce(testing::Return(4));
-    EXPECT_CALL(*iface_util_, setUpState("aware0", true))
-        .WillOnce(testing::Return(true));
-    ASSERT_EQ(createIface(IfaceType::NAN), "aware0");
-
-    EXPECT_CALL(*iface_util_, setUpState("aware0", false))
-        .WillOnce(testing::Return(true));
-    removeIface(IfaceType::NAN, "aware0");
-}
-
-////////// V1 Iface Combinations when AP creation is disabled //////////
-class WifiChipV1_AwareDisabledApIfaceCombinationTest : public WifiChipTest {
-   public:
-    void SetUp() override {
-        setupV1_AwareDisabledApIfaceCombination();
-        WifiChipTest::SetUp();
-    }
-};
-
-TEST_F(WifiChipV1_AwareDisabledApIfaceCombinationTest,
-       StaMode_CreateSta_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    ASSERT_TRUE(createIface(IfaceType::AP).empty());
-}
-
-////////// V2 Iface Combinations when AP creation is disabled //////////
-class WifiChipV2_AwareDisabledApIfaceCombinationTest : public WifiChipTest {
-   public:
-    void SetUp() override {
-        setupV2_AwareDisabledApIfaceCombination();
-        WifiChipTest::SetUp();
-    }
-};
-
-TEST_F(WifiChipV2_AwareDisabledApIfaceCombinationTest,
-       CreateSta_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    ASSERT_TRUE(createIface(IfaceType::AP).empty());
-}
-
-////////// Hypothetical Iface Combination with multiple ifaces //////////
-class WifiChip_MultiIfaceTest : public WifiChipTest {
-   public:
-    void SetUp() override {
-        setup_MultiIfaceCombination();
-        WifiChipTest::SetUp();
-    }
-};
-
-TEST_F(WifiChip_MultiIfaceTest, Create3Sta) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    ASSERT_TRUE(createIface(IfaceType::STA).empty());
-}
-
-TEST_F(WifiChip_MultiIfaceTest, CreateStaWithDefaultNames) {
-    property_set("wifi.interface.0", "");
-    property_set("wifi.interface.1", "");
-    property_set("wifi.interface.2", "");
-    property_set("wifi.interface", "");
-    property_set("wifi.concurrent.interface", "");
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan1");
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan2");
-}
-
-TEST_F(WifiChip_MultiIfaceTest, CreateStaWithCustomNames) {
-    property_set("wifi.interface.0", "test0");
-    property_set("wifi.interface.1", "test1");
-    property_set("wifi.interface.2", "test2");
-    property_set("wifi.interface", "bad0");
-    property_set("wifi.concurrent.interface", "bad1");
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_EQ(createIface(IfaceType::STA), "bad0");
-    ASSERT_EQ(createIface(IfaceType::STA), "bad1");
-    ASSERT_EQ(createIface(IfaceType::STA), "test2");
-}
-
-TEST_F(WifiChip_MultiIfaceTest, CreateStaWithCustomAltNames) {
-    property_set("wifi.interface.0", "");
-    property_set("wifi.interface.1", "");
-    property_set("wifi.interface.2", "");
-    property_set("wifi.interface", "testA0");
-    property_set("wifi.concurrent.interface", "testA1");
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_EQ(createIface(IfaceType::STA), "testA0");
-    ASSERT_EQ(createIface(IfaceType::STA), "testA1");
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan2");
-}
-
-TEST_F(WifiChip_MultiIfaceTest, CreateApStartsWithIdx1) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    // First AP will be slotted to wlan1.
-    ASSERT_EQ(createIface(IfaceType::AP), "wlan1");
-    // First STA will be slotted to wlan0.
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
-    // All further STA will be slotted to the remaining free indices.
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan2");
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan3");
-}
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.5/default/tests/wifi_iface_util_unit_tests.cpp b/wifi/1.5/default/tests/wifi_iface_util_unit_tests.cpp
deleted file mode 100644
index 8b67bb8..0000000
--- a/wifi/1.5/default/tests/wifi_iface_util_unit_tests.cpp
+++ /dev/null
@@ -1,101 +0,0 @@
-/*
- * Copyright (C) 2019, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-#include <android-base/macros.h>
-#include <gmock/gmock.h>
-
-#undef NAN
-#include "wifi_iface_util.h"
-
-#include "mock_interface_tool.h"
-#include "mock_wifi_legacy_hal.h"
-
-using testing::NiceMock;
-using testing::Test;
-
-namespace {
-constexpr uint8_t kValidUnicastLocallyAssignedMacAddressMask = 0x02;
-constexpr uint8_t kMacAddress[] = {0x02, 0x12, 0x45, 0x56, 0xab, 0xcc};
-constexpr char kIfaceName[] = "test-wlan0";
-
-bool isValidUnicastLocallyAssignedMacAddress(
-    const std::array<uint8_t, 6>& mac_address) {
-    uint8_t first_byte = mac_address[0];
-    return (first_byte & 0x3) == kValidUnicastLocallyAssignedMacAddressMask;
-}
-}  // namespace
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-namespace iface_util {
-class WifiIfaceUtilTest : public Test {
-   protected:
-    std::shared_ptr<NiceMock<wifi_system::MockInterfaceTool>> iface_tool_{
-        new NiceMock<wifi_system::MockInterfaceTool>};
-    legacy_hal::wifi_hal_fn fake_func_table_;
-    std::shared_ptr<NiceMock<legacy_hal::MockWifiLegacyHal>> legacy_hal_{
-        new NiceMock<legacy_hal::MockWifiLegacyHal>(iface_tool_,
-                                                    fake_func_table_, true)};
-    WifiIfaceUtil* iface_util_ = new WifiIfaceUtil(iface_tool_, legacy_hal_);
-};
-
-TEST_F(WifiIfaceUtilTest, GetOrCreateRandomMacAddress) {
-    auto mac_address = iface_util_->getOrCreateRandomMacAddress();
-    ASSERT_TRUE(isValidUnicastLocallyAssignedMacAddress(mac_address));
-
-    // All further calls should return the same MAC address.
-    ASSERT_EQ(mac_address, iface_util_->getOrCreateRandomMacAddress());
-    ASSERT_EQ(mac_address, iface_util_->getOrCreateRandomMacAddress());
-}
-
-TEST_F(WifiIfaceUtilTest, IfaceEventHandlers_SetMacAddress) {
-    std::array<uint8_t, 6> mac_address = {};
-    std::copy(std::begin(kMacAddress), std::end(kMacAddress),
-              std::begin(mac_address));
-    EXPECT_CALL(*iface_tool_, SetMacAddress(testing::_, testing::_))
-        .WillRepeatedly(testing::Return(true));
-    EXPECT_CALL(*iface_tool_, SetUpState(testing::_, testing::_))
-        .WillRepeatedly(testing::Return(true));
-
-    // Register for iface state toggle events.
-    bool callback_invoked = false;
-    iface_util::IfaceEventHandlers event_handlers = {};
-    event_handlers.on_state_toggle_off_on =
-        [&callback_invoked](const std::string& /* iface_name */) {
-            callback_invoked = true;
-        };
-    iface_util_->registerIfaceEventHandlers(kIfaceName, event_handlers);
-    // Invoke setMacAddress and ensure that the cb is invoked.
-    ASSERT_TRUE(iface_util_->setMacAddress(kIfaceName, mac_address));
-    ASSERT_TRUE(callback_invoked);
-
-    // Unregister for iface state toggle events.
-    callback_invoked = false;
-    iface_util_->unregisterIfaceEventHandlers(kIfaceName);
-    // Invoke setMacAddress and ensure that the cb is not invoked.
-    ASSERT_TRUE(iface_util_->setMacAddress(kIfaceName, mac_address));
-    ASSERT_FALSE(callback_invoked);
-}
-}  // namespace iface_util
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.5/default/tests/wifi_nan_iface_unit_tests.cpp b/wifi/1.5/default/tests/wifi_nan_iface_unit_tests.cpp
deleted file mode 100644
index 32da55e..0000000
--- a/wifi/1.5/default/tests/wifi_nan_iface_unit_tests.cpp
+++ /dev/null
@@ -1,162 +0,0 @@
-/*
- * Copyright (C) 2019, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-#include <android-base/macros.h>
-#include <cutils/properties.h>
-#include <gmock/gmock.h>
-
-#undef NAN  // This is weird, NAN is defined in bionic/libc/include/math.h:38
-#include "wifi_nan_iface.h"
-
-#include "mock_interface_tool.h"
-#include "mock_wifi_feature_flags.h"
-#include "mock_wifi_iface_util.h"
-#include "mock_wifi_legacy_hal.h"
-
-using testing::NiceMock;
-using testing::Return;
-using testing::Test;
-
-namespace {
-constexpr char kIfaceName[] = "mockWlan0";
-}  // namespace
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-
-using android::hardware::wifi::V1_2::NanDataPathConfirmInd;
-
-bool CaptureIfaceEventHandlers(
-    const std::string& /* iface_name*/,
-    iface_util::IfaceEventHandlers in_iface_event_handlers,
-    iface_util::IfaceEventHandlers* out_iface_event_handlers) {
-    *out_iface_event_handlers = in_iface_event_handlers;
-    return true;
-}
-
-class MockNanIfaceEventCallback : public IWifiNanIfaceEventCallback {
-   public:
-    MockNanIfaceEventCallback() = default;
-
-    MOCK_METHOD3(
-        notifyCapabilitiesResponse,
-        Return<void>(uint16_t, const WifiNanStatus&,
-                     const android::hardware::wifi::V1_0::NanCapabilities&));
-    MOCK_METHOD2(notifyEnableResponse,
-                 Return<void>(uint16_t, const WifiNanStatus&));
-    MOCK_METHOD2(notifyConfigResponse,
-                 Return<void>(uint16_t, const WifiNanStatus&));
-    MOCK_METHOD2(notifyDisableResponse,
-                 Return<void>(uint16_t, const WifiNanStatus&));
-    MOCK_METHOD3(notifyStartPublishResponse,
-                 Return<void>(uint16_t, const WifiNanStatus&, uint8_t));
-    MOCK_METHOD2(notifyStopPublishResponse,
-                 Return<void>(uint16_t, const WifiNanStatus&));
-    MOCK_METHOD3(notifyStartSubscribeResponse,
-                 Return<void>(uint16_t, const WifiNanStatus&, uint8_t));
-    MOCK_METHOD2(notifyStopSubscribeResponse,
-                 Return<void>(uint16_t, const WifiNanStatus&));
-    MOCK_METHOD2(notifyTransmitFollowupResponse,
-                 Return<void>(uint16_t, const WifiNanStatus&));
-    MOCK_METHOD2(notifyCreateDataInterfaceResponse,
-                 Return<void>(uint16_t, const WifiNanStatus&));
-    MOCK_METHOD2(notifyDeleteDataInterfaceResponse,
-                 Return<void>(uint16_t, const WifiNanStatus&));
-    MOCK_METHOD3(notifyInitiateDataPathResponse,
-                 Return<void>(uint16_t, const WifiNanStatus&, uint32_t));
-    MOCK_METHOD2(notifyRespondToDataPathIndicationResponse,
-                 Return<void>(uint16_t, const WifiNanStatus&));
-    MOCK_METHOD2(notifyTerminateDataPathResponse,
-                 Return<void>(uint16_t, const WifiNanStatus&));
-    MOCK_METHOD1(eventClusterEvent, Return<void>(const NanClusterEventInd&));
-    MOCK_METHOD1(eventDisabled, Return<void>(const WifiNanStatus&));
-    MOCK_METHOD2(eventPublishTerminated,
-                 Return<void>(uint8_t, const WifiNanStatus&));
-    MOCK_METHOD2(eventSubscribeTerminated,
-                 Return<void>(uint8_t, const WifiNanStatus&));
-    MOCK_METHOD1(eventMatch, Return<void>(const NanMatchInd&));
-    MOCK_METHOD2(eventMatchExpired, Return<void>(uint8_t, uint32_t));
-    MOCK_METHOD1(eventFollowupReceived,
-                 Return<void>(const NanFollowupReceivedInd&));
-    MOCK_METHOD2(eventTransmitFollowup,
-                 Return<void>(uint16_t, const WifiNanStatus&));
-    MOCK_METHOD1(eventDataPathRequest,
-                 Return<void>(const NanDataPathRequestInd&));
-    MOCK_METHOD1(
-        eventDataPathConfirm,
-        Return<void>(
-            const android::hardware::wifi::V1_0::NanDataPathConfirmInd&));
-    MOCK_METHOD1(eventDataPathTerminated, Return<void>(uint32_t));
-    MOCK_METHOD1(eventDataPathConfirm_1_2,
-                 Return<void>(const NanDataPathConfirmInd&));
-    MOCK_METHOD1(eventDataPathScheduleUpdate,
-                 Return<void>(const NanDataPathScheduleUpdateInd&));
-    MOCK_METHOD3(notifyCapabilitiesResponse_1_5,
-                 Return<void>(uint16_t, const WifiNanStatus&,
-                              const NanCapabilities&));
-};
-
-class WifiNanIfaceTest : public Test {
-   protected:
-    legacy_hal::wifi_hal_fn fake_func_table_;
-    std::shared_ptr<NiceMock<wifi_system::MockInterfaceTool>> iface_tool_{
-        new NiceMock<wifi_system::MockInterfaceTool>};
-    std::shared_ptr<NiceMock<legacy_hal::MockWifiLegacyHal>> legacy_hal_{
-        new NiceMock<legacy_hal::MockWifiLegacyHal>(iface_tool_,
-                                                    fake_func_table_, true)};
-    std::shared_ptr<NiceMock<iface_util::MockWifiIfaceUtil>> iface_util_{
-        new NiceMock<iface_util::MockWifiIfaceUtil>(iface_tool_, legacy_hal_)};
-};
-
-TEST_F(WifiNanIfaceTest, IfacEventHandlers_OnStateToggleOffOn) {
-    iface_util::IfaceEventHandlers captured_iface_event_handlers = {};
-    EXPECT_CALL(*legacy_hal_,
-                nanRegisterCallbackHandlers(testing::_, testing::_))
-        .WillOnce(testing::Return(legacy_hal::WIFI_SUCCESS));
-    EXPECT_CALL(*iface_util_,
-                registerIfaceEventHandlers(testing::_, testing::_))
-        .WillOnce(testing::Invoke(
-            bind(CaptureIfaceEventHandlers, std::placeholders::_1,
-                 std::placeholders::_2, &captured_iface_event_handlers)));
-    sp<WifiNanIface> nan_iface =
-        new WifiNanIface(kIfaceName, false, legacy_hal_, iface_util_);
-
-    // Register a mock nan event callback.
-    sp<NiceMock<MockNanIfaceEventCallback>> mock_event_callback{
-        new NiceMock<MockNanIfaceEventCallback>};
-    nan_iface->registerEventCallback(
-        mock_event_callback, [](const WifiStatus& status) {
-            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-        });
-    // Ensure that the eventDisabled() function in mock callback will be
-    // invoked.
-    WifiNanStatus expected_nan_status = {
-        NanStatusType::UNSUPPORTED_CONCURRENCY_NAN_DISABLED, ""};
-    EXPECT_CALL(*mock_event_callback, eventDisabled(expected_nan_status))
-        .Times(1);
-
-    // Trigger the iface state toggle callback.
-    captured_iface_event_handlers.on_state_toggle_off_on(kIfaceName);
-}
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.5/default/wifi.cpp b/wifi/1.5/default/wifi.cpp
deleted file mode 100644
index a85b242..0000000
--- a/wifi/1.5/default/wifi.cpp
+++ /dev/null
@@ -1,304 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-
-#include "hidl_return_util.h"
-#include "wifi.h"
-#include "wifi_status_util.h"
-
-namespace {
-// Starting Chip ID, will be assigned to primary chip
-static constexpr android::hardware::wifi::V1_0::ChipId kPrimaryChipId = 0;
-}  // namespace
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-using hidl_return_util::validateAndCall;
-using hidl_return_util::validateAndCallWithLock;
-
-Wifi::Wifi(
-    const std::shared_ptr<wifi_system::InterfaceTool> iface_tool,
-    const std::shared_ptr<legacy_hal::WifiLegacyHalFactory> legacy_hal_factory,
-    const std::shared_ptr<mode_controller::WifiModeController> mode_controller,
-    const std::shared_ptr<feature_flags::WifiFeatureFlags> feature_flags)
-    : iface_tool_(iface_tool),
-      legacy_hal_factory_(legacy_hal_factory),
-      mode_controller_(mode_controller),
-      feature_flags_(feature_flags),
-      run_state_(RunState::STOPPED) {}
-
-bool Wifi::isValid() {
-    // This object is always valid.
-    return true;
-}
-
-Return<void> Wifi::registerEventCallback(
-    const sp<V1_0::IWifiEventCallback>& event_callback,
-    registerEventCallback_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_UNKNOWN,
-                           &Wifi::registerEventCallbackInternal, hidl_status_cb,
-                           event_callback);
-}
-
-Return<void> Wifi::registerEventCallback_1_5(
-    const sp<V1_5::IWifiEventCallback>& event_callback,
-    registerEventCallback_1_5_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_UNKNOWN,
-                           &Wifi::registerEventCallbackInternal_1_5,
-                           hidl_status_cb, event_callback);
-}
-
-Return<bool> Wifi::isStarted() { return run_state_ != RunState::STOPPED; }
-
-Return<void> Wifi::start(start_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_UNKNOWN,
-                           &Wifi::startInternal, hidl_status_cb);
-}
-
-Return<void> Wifi::stop(stop_cb hidl_status_cb) {
-    return validateAndCallWithLock(this, WifiStatusCode::ERROR_UNKNOWN,
-                                   &Wifi::stopInternal, hidl_status_cb);
-}
-
-Return<void> Wifi::getChipIds(getChipIds_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_UNKNOWN,
-                           &Wifi::getChipIdsInternal, hidl_status_cb);
-}
-
-Return<void> Wifi::getChip(ChipId chip_id, getChip_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_UNKNOWN,
-                           &Wifi::getChipInternal, hidl_status_cb, chip_id);
-}
-
-Return<void> Wifi::debug(const hidl_handle& handle,
-                         const hidl_vec<hidl_string>&) {
-    LOG(INFO) << "-----------Debug is called----------------";
-    if (chips_.size() == 0) {
-        return Void();
-    }
-
-    for (sp<WifiChip> chip : chips_) {
-        if (!chip.get()) continue;
-
-        chip->debug(handle, {});
-    }
-    return Void();
-}
-
-WifiStatus Wifi::registerEventCallbackInternal(
-    const sp<V1_0::IWifiEventCallback>& event_callback __unused) {
-    // Deprecated support for this callback.
-    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
-}
-
-WifiStatus Wifi::registerEventCallbackInternal_1_5(
-    const sp<V1_5::IWifiEventCallback>& event_callback) {
-    if (!event_cb_handler_.addCallback(event_callback)) {
-        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-    }
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-WifiStatus Wifi::startInternal() {
-    if (run_state_ == RunState::STARTED) {
-        return createWifiStatus(WifiStatusCode::SUCCESS);
-    } else if (run_state_ == RunState::STOPPING) {
-        return createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE,
-                                "HAL is stopping");
-    }
-    WifiStatus wifi_status = initializeModeControllerAndLegacyHal();
-    if (wifi_status.code == WifiStatusCode::SUCCESS) {
-        // Register the callback for subsystem restart
-        const auto& on_subsystem_restart_callback =
-            [this](const std::string& error) {
-                WifiStatus wifi_status =
-                    createWifiStatus(WifiStatusCode::ERROR_UNKNOWN, error);
-                for (const auto& callback : event_cb_handler_.getCallbacks()) {
-                    LOG(INFO) << "Attempting to invoke onSubsystemRestart "
-                                 "callback";
-                    if (!callback->onSubsystemRestart(wifi_status).isOk()) {
-                        LOG(ERROR)
-                            << "Failed to invoke onSubsystemRestart callback";
-                    } else {
-                        LOG(INFO) << "Succeeded to invoke onSubsystemRestart "
-                                     "callback";
-                    }
-                }
-            };
-
-        // Create the chip instance once the HAL is started.
-        android::hardware::wifi::V1_0::ChipId chipId = kPrimaryChipId;
-        for (auto& hal : legacy_hals_) {
-            chips_.push_back(new WifiChip(
-                chipId, chipId == kPrimaryChipId, hal, mode_controller_,
-                std::make_shared<iface_util::WifiIfaceUtil>(iface_tool_, hal),
-                feature_flags_, on_subsystem_restart_callback));
-            chipId++;
-        }
-        run_state_ = RunState::STARTED;
-        for (const auto& callback : event_cb_handler_.getCallbacks()) {
-            if (!callback->onStart().isOk()) {
-                LOG(ERROR) << "Failed to invoke onStart callback";
-            };
-        }
-        LOG(INFO) << "Wifi HAL started";
-    } else {
-        for (const auto& callback : event_cb_handler_.getCallbacks()) {
-            if (!callback->onFailure(wifi_status).isOk()) {
-                LOG(ERROR) << "Failed to invoke onFailure callback";
-            }
-        }
-        LOG(ERROR) << "Wifi HAL start failed";
-        // Clear the event callback objects since the HAL start failed.
-        event_cb_handler_.invalidate();
-    }
-    return wifi_status;
-}
-
-WifiStatus Wifi::stopInternal(
-    /* NONNULL */ std::unique_lock<std::recursive_mutex>* lock) {
-    if (run_state_ == RunState::STOPPED) {
-        return createWifiStatus(WifiStatusCode::SUCCESS);
-    } else if (run_state_ == RunState::STOPPING) {
-        return createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE,
-                                "HAL is stopping");
-    }
-    // Clear the chip object and its child objects since the HAL is now
-    // stopped.
-    for (auto& chip : chips_) {
-        if (chip.get()) {
-            chip->invalidate();
-            chip.clear();
-        }
-    }
-    chips_.clear();
-    WifiStatus wifi_status = stopLegacyHalAndDeinitializeModeController(lock);
-    if (wifi_status.code == WifiStatusCode::SUCCESS) {
-        for (const auto& callback : event_cb_handler_.getCallbacks()) {
-            if (!callback->onStop().isOk()) {
-                LOG(ERROR) << "Failed to invoke onStop callback";
-            };
-        }
-        LOG(INFO) << "Wifi HAL stopped";
-    } else {
-        for (const auto& callback : event_cb_handler_.getCallbacks()) {
-            if (!callback->onFailure(wifi_status).isOk()) {
-                LOG(ERROR) << "Failed to invoke onFailure callback";
-            }
-        }
-        LOG(ERROR) << "Wifi HAL stop failed";
-    }
-    // Clear the event callback objects since the HAL is now stopped.
-    event_cb_handler_.invalidate();
-    return wifi_status;
-}
-
-std::pair<WifiStatus, std::vector<ChipId>> Wifi::getChipIdsInternal() {
-    std::vector<ChipId> chip_ids;
-
-    for (auto& chip : chips_) {
-        ChipId chip_id = getChipIdFromWifiChip(chip);
-        if (chip_id != UINT32_MAX) chip_ids.emplace_back(chip_id);
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), std::move(chip_ids)};
-}
-
-std::pair<WifiStatus, sp<V1_4::IWifiChip>> Wifi::getChipInternal(
-    ChipId chip_id) {
-    for (auto& chip : chips_) {
-        ChipId cand_id = getChipIdFromWifiChip(chip);
-        if ((cand_id != UINT32_MAX) && (cand_id == chip_id))
-            return {createWifiStatus(WifiStatusCode::SUCCESS), chip};
-    }
-
-    return {createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS), nullptr};
-}
-
-WifiStatus Wifi::initializeModeControllerAndLegacyHal() {
-    if (!mode_controller_->initialize()) {
-        LOG(ERROR) << "Failed to initialize firmware mode controller";
-        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-    }
-
-    legacy_hals_ = legacy_hal_factory_->getHals();
-    if (legacy_hals_.empty())
-        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-    int index = 0;  // for failure log
-    for (auto& hal : legacy_hals_) {
-        legacy_hal::wifi_error legacy_status = hal->initialize();
-        if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-            // Currently WifiLegacyHal::initialize does not allocate extra mem,
-            // only initializes the function table. If this changes, need to
-            // implement WifiLegacyHal::deinitialize and deinitalize the
-            // HALs already initialized
-            LOG(ERROR) << "Failed to initialize legacy HAL index: " << index
-                       << " error: " << legacyErrorToString(legacy_status);
-            return createWifiStatusFromLegacyError(legacy_status);
-        }
-        index++;
-    }
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-WifiStatus Wifi::stopLegacyHalAndDeinitializeModeController(
-    /* NONNULL */ std::unique_lock<std::recursive_mutex>* lock) {
-    legacy_hal::wifi_error legacy_status = legacy_hal::WIFI_SUCCESS;
-    int index = 0;
-
-    run_state_ = RunState::STOPPING;
-    for (auto& hal : legacy_hals_) {
-        legacy_hal::wifi_error tmp = hal->stop(lock, [&]() {});
-        if (tmp != legacy_hal::WIFI_SUCCESS) {
-            LOG(ERROR) << "Failed to stop legacy HAL index: " << index
-                       << " error: " << legacyErrorToString(legacy_status);
-            legacy_status = tmp;
-        }
-        index++;
-    }
-    run_state_ = RunState::STOPPED;
-
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        LOG(ERROR) << "One or more legacy HALs failed to stop";
-        return createWifiStatusFromLegacyError(legacy_status);
-    }
-    if (!mode_controller_->deinitialize()) {
-        LOG(ERROR) << "Failed to deinitialize firmware mode controller";
-        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-    }
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-ChipId Wifi::getChipIdFromWifiChip(sp<WifiChip>& chip) {
-    ChipId chip_id = UINT32_MAX;
-    if (chip.get()) {
-        chip->getId([&](WifiStatus status, uint32_t id) {
-            if (status.code == WifiStatusCode::SUCCESS) {
-                chip_id = id;
-            }
-        });
-    }
-
-    return chip_id;
-}
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.5/default/wifi.h b/wifi/1.5/default/wifi.h
deleted file mode 100644
index c94ef3f..0000000
--- a/wifi/1.5/default/wifi.h
+++ /dev/null
@@ -1,111 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef WIFI_H_
-#define WIFI_H_
-
-// HACK: NAN is a macro defined in math.h, which can be included in various
-// headers. This wifi HAL uses an enum called NAN, which does not compile when
-// the macro is defined. Undefine NAN to work around it.
-#undef NAN
-#include <android/hardware/wifi/1.5/IWifi.h>
-
-#include <android-base/macros.h>
-#include <utils/Looper.h>
-#include <functional>
-
-#include "hidl_callback_util.h"
-#include "wifi_chip.h"
-#include "wifi_feature_flags.h"
-#include "wifi_legacy_hal.h"
-#include "wifi_legacy_hal_factory.h"
-#include "wifi_mode_controller.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-
-/**
- * Root HIDL interface object used to control the Wifi HAL.
- */
-class Wifi : public V1_5::IWifi {
-   public:
-    Wifi(const std::shared_ptr<wifi_system::InterfaceTool> iface_tool,
-         const std::shared_ptr<legacy_hal::WifiLegacyHalFactory>
-             legacy_hal_factory,
-         const std::shared_ptr<mode_controller::WifiModeController>
-             mode_controller,
-         const std::shared_ptr<feature_flags::WifiFeatureFlags> feature_flags);
-
-    bool isValid();
-
-    // HIDL methods exposed.
-    Return<void> registerEventCallback(
-        const sp<V1_0::IWifiEventCallback>& event_callback,
-        registerEventCallback_cb hidl_status_cb) override;
-    Return<void> registerEventCallback_1_5(
-        const sp<V1_5::IWifiEventCallback>& event_callback,
-        registerEventCallback_1_5_cb hidl_status_cb) override;
-    Return<bool> isStarted() override;
-    Return<void> start(start_cb hidl_status_cb) override;
-    Return<void> stop(stop_cb hidl_status_cb) override;
-    Return<void> getChipIds(getChipIds_cb hidl_status_cb) override;
-    Return<void> getChip(ChipId chip_id, getChip_cb hidl_status_cb) override;
-    Return<void> debug(const hidl_handle& handle,
-                       const hidl_vec<hidl_string>& options) override;
-
-   private:
-    enum class RunState { STOPPED, STARTED, STOPPING };
-
-    // Corresponding worker functions for the HIDL methods.
-    WifiStatus registerEventCallbackInternal(
-        const sp<V1_0::IWifiEventCallback>& event_callback __unused);
-    WifiStatus registerEventCallbackInternal_1_5(
-        const sp<V1_5::IWifiEventCallback>& event_callback);
-    WifiStatus startInternal();
-    WifiStatus stopInternal(std::unique_lock<std::recursive_mutex>* lock);
-    std::pair<WifiStatus, std::vector<ChipId>> getChipIdsInternal();
-    std::pair<WifiStatus, sp<V1_4::IWifiChip>> getChipInternal(ChipId chip_id);
-
-    WifiStatus initializeModeControllerAndLegacyHal();
-    WifiStatus stopLegacyHalAndDeinitializeModeController(
-        std::unique_lock<std::recursive_mutex>* lock);
-    ChipId getChipIdFromWifiChip(sp<WifiChip>& chip);
-
-    // Instance is created in this root level |IWifi| HIDL interface object
-    // and shared with all the child HIDL interface objects.
-    std::shared_ptr<wifi_system::InterfaceTool> iface_tool_;
-    std::shared_ptr<legacy_hal::WifiLegacyHalFactory> legacy_hal_factory_;
-    std::shared_ptr<mode_controller::WifiModeController> mode_controller_;
-    std::vector<std::shared_ptr<legacy_hal::WifiLegacyHal>> legacy_hals_;
-    std::shared_ptr<feature_flags::WifiFeatureFlags> feature_flags_;
-    RunState run_state_;
-    std::vector<sp<WifiChip>> chips_;
-    hidl_callback_util::HidlCallbackHandler<V1_5::IWifiEventCallback>
-        event_cb_handler_;
-
-    DISALLOW_COPY_AND_ASSIGN(Wifi);
-};
-
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // WIFI_H_
diff --git a/wifi/1.5/default/wifi_ap_iface.cpp b/wifi/1.5/default/wifi_ap_iface.cpp
deleted file mode 100644
index 1ae7905..0000000
--- a/wifi/1.5/default/wifi_ap_iface.cpp
+++ /dev/null
@@ -1,220 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-
-#include "hidl_return_util.h"
-#include "hidl_struct_util.h"
-#include "wifi_ap_iface.h"
-#include "wifi_status_util.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-using hidl_return_util::validateAndCall;
-
-WifiApIface::WifiApIface(
-    const std::string& ifname, const std::vector<std::string>& instances,
-    const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
-    const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util)
-    : ifname_(ifname),
-      instances_(instances),
-      legacy_hal_(legacy_hal),
-      iface_util_(iface_util),
-      is_valid_(true) {}
-
-void WifiApIface::invalidate() {
-    legacy_hal_.reset();
-    is_valid_ = false;
-}
-
-bool WifiApIface::isValid() { return is_valid_; }
-
-std::string WifiApIface::getName() { return ifname_; }
-
-void WifiApIface::removeInstance(std::string instance) {
-    instances_.erase(
-        std::remove(instances_.begin(), instances_.end(), instance),
-        instances_.end());
-}
-
-Return<void> WifiApIface::getName(getName_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiApIface::getNameInternal, hidl_status_cb);
-}
-
-Return<void> WifiApIface::getType(getType_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiApIface::getTypeInternal, hidl_status_cb);
-}
-
-Return<void> WifiApIface::setCountryCode(const hidl_array<int8_t, 2>& code,
-                                         setCountryCode_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiApIface::setCountryCodeInternal, hidl_status_cb,
-                           code);
-}
-
-Return<void> WifiApIface::getValidFrequenciesForBand(
-    V1_0::WifiBand band, getValidFrequenciesForBand_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiApIface::getValidFrequenciesForBandInternal,
-                           hidl_status_cb, band);
-}
-
-Return<void> WifiApIface::setMacAddress(const hidl_array<uint8_t, 6>& mac,
-                                        setMacAddress_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiApIface::setMacAddressInternal, hidl_status_cb,
-                           mac);
-}
-
-Return<void> WifiApIface::getFactoryMacAddress(
-    getFactoryMacAddress_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiApIface::getFactoryMacAddressInternal,
-                           hidl_status_cb,
-                           instances_.size() > 0 ? instances_[0] : ifname_);
-}
-
-Return<void> WifiApIface::resetToFactoryMacAddress(
-    resetToFactoryMacAddress_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiApIface::resetToFactoryMacAddressInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiApIface::getBridgedInstances(
-    getBridgedInstances_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiApIface::getBridgedInstancesInternal,
-                           hidl_status_cb);
-}
-
-std::pair<WifiStatus, std::string> WifiApIface::getNameInternal() {
-    return {createWifiStatus(WifiStatusCode::SUCCESS), ifname_};
-}
-
-std::pair<WifiStatus, IfaceType> WifiApIface::getTypeInternal() {
-    return {createWifiStatus(WifiStatusCode::SUCCESS), IfaceType::AP};
-}
-
-WifiStatus WifiApIface::setCountryCodeInternal(
-    const std::array<int8_t, 2>& code) {
-    legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->setCountryCode(
-        instances_.size() > 0 ? instances_[0] : ifname_, code);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-std::pair<WifiStatus, std::vector<WifiChannelInMhz>>
-WifiApIface::getValidFrequenciesForBandInternal(V1_0::WifiBand band) {
-    static_assert(sizeof(WifiChannelInMhz) == sizeof(uint32_t),
-                  "Size mismatch");
-    legacy_hal::wifi_error legacy_status;
-    std::vector<uint32_t> valid_frequencies;
-    std::tie(legacy_status, valid_frequencies) =
-        legacy_hal_.lock()->getValidFrequenciesForBand(
-            instances_.size() > 0 ? instances_[0] : ifname_,
-            hidl_struct_util::convertHidlWifiBandToLegacy(band));
-    return {createWifiStatusFromLegacyError(legacy_status), valid_frequencies};
-}
-
-WifiStatus WifiApIface::setMacAddressInternal(
-    const std::array<uint8_t, 6>& mac) {
-    // Support random MAC up to 2 interfaces
-    if (instances_.size() == 2) {
-        int rbyte = 1;
-        for (auto const& intf : instances_) {
-            std::array<uint8_t, 6> rmac = mac;
-            // reverse the bits to avoid collision
-            rmac[rbyte] = 0xff - rmac[rbyte];
-            if (!iface_util_.lock()->setMacAddress(intf, rmac)) {
-                LOG(INFO) << "Failed to set random mac address on " << intf;
-                return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-            }
-            rbyte++;
-        }
-    }
-    // It also needs to set mac address for bridged interface, otherwise the mac
-    // address of bridged interface will be changed after one of instance
-    // down.
-    if (!iface_util_.lock()->setMacAddress(ifname_, mac)) {
-        LOG(ERROR) << "Fail to config MAC for interface " << ifname_;
-        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-    }
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-std::pair<WifiStatus, std::array<uint8_t, 6>>
-WifiApIface::getFactoryMacAddressInternal(const std::string& ifaceName) {
-    std::array<uint8_t, 6> mac =
-        iface_util_.lock()->getFactoryMacAddress(ifaceName);
-    if (mac[0] == 0 && mac[1] == 0 && mac[2] == 0 && mac[3] == 0 &&
-        mac[4] == 0 && mac[5] == 0) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), mac};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), mac};
-}
-
-WifiStatus WifiApIface::resetToFactoryMacAddressInternal() {
-    std::pair<WifiStatus, std::array<uint8_t, 6>> getMacResult;
-    if (instances_.size() == 2) {
-        for (auto const& intf : instances_) {
-            getMacResult = getFactoryMacAddressInternal(intf);
-            LOG(DEBUG) << "Reset MAC to factory MAC on " << intf;
-            if (getMacResult.first.code != WifiStatusCode::SUCCESS ||
-                !iface_util_.lock()->setMacAddress(intf, getMacResult.second)) {
-                return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-            }
-        }
-        // It needs to set mac address for bridged interface, otherwise the mac
-        // address of the bridged interface will be changed after one of the
-        // instance down. Thus we are generating a random MAC address for the
-        // bridged interface even if we got the request to reset the Factory
-        // MAC. Since the bridged interface is an internal interface for the
-        // operation of bpf and others networking operation.
-        if (!iface_util_.lock()->setMacAddress(
-                ifname_, iface_util_.lock()->createRandomMacAddress())) {
-            LOG(ERROR) << "Fail to config MAC for bridged interface "
-                       << ifname_;
-            return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-        }
-    } else {
-        getMacResult = getFactoryMacAddressInternal(ifname_);
-        LOG(DEBUG) << "Reset MAC to factory MAC on " << ifname_;
-        if (getMacResult.first.code != WifiStatusCode::SUCCESS ||
-            !iface_util_.lock()->setMacAddress(ifname_, getMacResult.second)) {
-            return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-        }
-    }
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-std::pair<WifiStatus, std::vector<hidl_string>>
-WifiApIface::getBridgedInstancesInternal() {
-    std::vector<hidl_string> instances;
-    for (const auto& instance_name : instances_) {
-        instances.push_back(instance_name);
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), instances};
-}
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.5/default/wifi_ap_iface.h b/wifi/1.5/default/wifi_ap_iface.h
deleted file mode 100644
index 8f8387d..0000000
--- a/wifi/1.5/default/wifi_ap_iface.h
+++ /dev/null
@@ -1,95 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef WIFI_AP_IFACE_H_
-#define WIFI_AP_IFACE_H_
-
-#include <android-base/macros.h>
-#include <android/hardware/wifi/1.5/IWifiApIface.h>
-
-#include "wifi_iface_util.h"
-#include "wifi_legacy_hal.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-using namespace android::hardware::wifi::V1_0;
-
-/**
- * HIDL interface object used to control a AP Iface instance.
- */
-class WifiApIface : public V1_5::IWifiApIface {
-   public:
-    WifiApIface(const std::string& ifname,
-                const std::vector<std::string>& instances,
-                const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
-                const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util);
-    // Refer to |WifiChip::invalidate()|.
-    void invalidate();
-    bool isValid();
-    std::string getName();
-    void removeInstance(std::string instance);
-
-    // HIDL methods exposed.
-    Return<void> getName(getName_cb hidl_status_cb) override;
-    Return<void> getType(getType_cb hidl_status_cb) override;
-    Return<void> setCountryCode(const hidl_array<int8_t, 2>& code,
-                                setCountryCode_cb hidl_status_cb) override;
-    Return<void> getValidFrequenciesForBand(
-        V1_0::WifiBand band,
-        getValidFrequenciesForBand_cb hidl_status_cb) override;
-    Return<void> setMacAddress(const hidl_array<uint8_t, 6>& mac,
-                               setMacAddress_cb hidl_status_cb) override;
-    Return<void> getFactoryMacAddress(
-        getFactoryMacAddress_cb hidl_status_cb) override;
-    Return<void> resetToFactoryMacAddress(
-        resetToFactoryMacAddress_cb hidl_status_cb) override;
-
-    Return<void> getBridgedInstances(
-        getBridgedInstances_cb hidl_status_cb) override;
-
-   private:
-    // Corresponding worker functions for the HIDL methods.
-    std::pair<WifiStatus, std::string> getNameInternal();
-    std::pair<WifiStatus, IfaceType> getTypeInternal();
-    WifiStatus setCountryCodeInternal(const std::array<int8_t, 2>& code);
-    std::pair<WifiStatus, std::vector<WifiChannelInMhz>>
-    getValidFrequenciesForBandInternal(V1_0::WifiBand band);
-    WifiStatus setMacAddressInternal(const std::array<uint8_t, 6>& mac);
-    std::pair<WifiStatus, std::array<uint8_t, 6>> getFactoryMacAddressInternal(
-        const std::string& ifaceName);
-    WifiStatus resetToFactoryMacAddressInternal();
-    std::pair<WifiStatus, std::vector<hidl_string>>
-    getBridgedInstancesInternal();
-
-    std::string ifname_;
-    std::vector<std::string> instances_;
-    std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
-    std::weak_ptr<iface_util::WifiIfaceUtil> iface_util_;
-    bool is_valid_;
-
-    DISALLOW_COPY_AND_ASSIGN(WifiApIface);
-};
-
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // WIFI_AP_IFACE_H_
diff --git a/wifi/1.5/default/wifi_chip.cpp b/wifi/1.5/default/wifi_chip.cpp
deleted file mode 100644
index 6bdff42..0000000
--- a/wifi/1.5/default/wifi_chip.cpp
+++ /dev/null
@@ -1,2065 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <fcntl.h>
-
-#include <android-base/logging.h>
-#include <android-base/unique_fd.h>
-#include <cutils/properties.h>
-#include <net/if.h>
-#include <sys/stat.h>
-#include <sys/sysmacros.h>
-
-#include "hidl_return_util.h"
-#include "hidl_struct_util.h"
-#include "wifi_chip.h"
-#include "wifi_status_util.h"
-
-#define P2P_MGMT_DEVICE_PREFIX "p2p-dev-"
-
-namespace {
-using android::sp;
-using android::base::unique_fd;
-using android::hardware::hidl_string;
-using android::hardware::hidl_vec;
-using android::hardware::wifi::V1_0::ChipModeId;
-using android::hardware::wifi::V1_0::IfaceType;
-using android::hardware::wifi::V1_0::IWifiChip;
-
-constexpr char kCpioMagic[] = "070701";
-constexpr size_t kMaxBufferSizeBytes = 1024 * 1024 * 3;
-constexpr uint32_t kMaxRingBufferFileAgeSeconds = 60 * 60 * 10;
-constexpr uint32_t kMaxRingBufferFileNum = 20;
-constexpr char kTombstoneFolderPath[] = "/data/vendor/tombstones/wifi/";
-constexpr char kActiveWlanIfaceNameProperty[] = "wifi.active.interface";
-constexpr char kNoActiveWlanIfaceNamePropertyValue[] = "";
-constexpr unsigned kMaxWlanIfaces = 5;
-constexpr char kApBridgeIfacePrefix[] = "ap_br_";
-
-template <typename Iface>
-void invalidateAndClear(std::vector<sp<Iface>>& ifaces, sp<Iface> iface) {
-    iface->invalidate();
-    ifaces.erase(std::remove(ifaces.begin(), ifaces.end(), iface),
-                 ifaces.end());
-}
-
-template <typename Iface>
-void invalidateAndClearAll(std::vector<sp<Iface>>& ifaces) {
-    for (const auto& iface : ifaces) {
-        iface->invalidate();
-    }
-    ifaces.clear();
-}
-
-template <typename Iface>
-std::vector<hidl_string> getNames(std::vector<sp<Iface>>& ifaces) {
-    std::vector<hidl_string> names;
-    for (const auto& iface : ifaces) {
-        names.emplace_back(iface->getName());
-    }
-    return names;
-}
-
-template <typename Iface>
-sp<Iface> findUsingName(std::vector<sp<Iface>>& ifaces,
-                        const std::string& name) {
-    std::vector<hidl_string> names;
-    for (const auto& iface : ifaces) {
-        if (name == iface->getName()) {
-            return iface;
-        }
-    }
-    return nullptr;
-}
-
-std::string getWlanIfaceName(unsigned idx) {
-    if (idx >= kMaxWlanIfaces) {
-        CHECK(false) << "Requested interface beyond wlan" << kMaxWlanIfaces;
-        return {};
-    }
-
-    std::array<char, PROPERTY_VALUE_MAX> buffer;
-    if (idx == 0 || idx == 1) {
-        const char* altPropName =
-            (idx == 0) ? "wifi.interface" : "wifi.concurrent.interface";
-        auto res = property_get(altPropName, buffer.data(), nullptr);
-        if (res > 0) return buffer.data();
-    }
-    std::string propName = "wifi.interface." + std::to_string(idx);
-    auto res = property_get(propName.c_str(), buffer.data(), nullptr);
-    if (res > 0) return buffer.data();
-
-    return "wlan" + std::to_string(idx);
-}
-
-// Returns the dedicated iface name if defined.
-// Returns two ifaces in bridged mode.
-std::vector<std::string> getPredefinedApIfaceNames(bool is_bridged) {
-    std::vector<std::string> ifnames;
-    std::array<char, PROPERTY_VALUE_MAX> buffer;
-    buffer.fill(0);
-    if (property_get("ro.vendor.wifi.sap.interface", buffer.data(), nullptr) ==
-        0) {
-        return ifnames;
-    }
-    ifnames.push_back(buffer.data());
-    if (is_bridged) {
-        buffer.fill(0);
-        if (property_get("ro.vendor.wifi.sap.concurrent.iface", buffer.data(),
-                         nullptr) == 0) {
-            return ifnames;
-        }
-        ifnames.push_back(buffer.data());
-    }
-    return ifnames;
-}
-
-std::string getPredefinedP2pIfaceName() {
-    std::array<char, PROPERTY_VALUE_MAX> primaryIfaceName;
-    char p2pParentIfname[100];
-    std::string p2pDevIfName = "";
-    std::array<char, PROPERTY_VALUE_MAX> buffer;
-    property_get("wifi.direct.interface", buffer.data(), "p2p0");
-    if (strncmp(buffer.data(), P2P_MGMT_DEVICE_PREFIX,
-                strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
-        /* Get the p2p parent interface name from p2p device interface name set
-         * in property */
-        strncpy(p2pParentIfname, buffer.data() + strlen(P2P_MGMT_DEVICE_PREFIX),
-                strlen(buffer.data()) - strlen(P2P_MGMT_DEVICE_PREFIX));
-        if (property_get(kActiveWlanIfaceNameProperty, primaryIfaceName.data(),
-                         nullptr) == 0) {
-            return buffer.data();
-        }
-        /* Check if the parent interface derived from p2p device interface name
-         * is active */
-        if (strncmp(p2pParentIfname, primaryIfaceName.data(),
-                    strlen(buffer.data()) - strlen(P2P_MGMT_DEVICE_PREFIX)) !=
-            0) {
-            /*
-             * Update the predefined p2p device interface parent interface name
-             * with current active wlan interface
-             */
-            p2pDevIfName += P2P_MGMT_DEVICE_PREFIX;
-            p2pDevIfName += primaryIfaceName.data();
-            LOG(INFO) << "update the p2p device interface name to "
-                      << p2pDevIfName.c_str();
-            return p2pDevIfName;
-        }
-    }
-    return buffer.data();
-}
-
-// Returns the dedicated iface name if one is defined.
-std::string getPredefinedNanIfaceName() {
-    std::array<char, PROPERTY_VALUE_MAX> buffer;
-    if (property_get("wifi.aware.interface", buffer.data(), nullptr) == 0) {
-        return {};
-    }
-    return buffer.data();
-}
-
-void setActiveWlanIfaceNameProperty(const std::string& ifname) {
-    auto res = property_set(kActiveWlanIfaceNameProperty, ifname.data());
-    if (res != 0) {
-        PLOG(ERROR) << "Failed to set active wlan iface name property";
-    }
-}
-
-// delete files that meet either conditions:
-// 1. older than a predefined time in the wifi tombstone dir.
-// 2. Files in excess to a predefined amount, starting from the oldest ones
-bool removeOldFilesInternal() {
-    time_t now = time(0);
-    const time_t delete_files_before = now - kMaxRingBufferFileAgeSeconds;
-    std::unique_ptr<DIR, decltype(&closedir)> dir_dump(
-        opendir(kTombstoneFolderPath), closedir);
-    if (!dir_dump) {
-        PLOG(ERROR) << "Failed to open directory";
-        return false;
-    }
-    struct dirent* dp;
-    bool success = true;
-    std::list<std::pair<const time_t, std::string>> valid_files;
-    while ((dp = readdir(dir_dump.get()))) {
-        if (dp->d_type != DT_REG) {
-            continue;
-        }
-        std::string cur_file_name(dp->d_name);
-        struct stat cur_file_stat;
-        std::string cur_file_path = kTombstoneFolderPath + cur_file_name;
-        if (stat(cur_file_path.c_str(), &cur_file_stat) == -1) {
-            PLOG(ERROR) << "Failed to get file stat for " << cur_file_path;
-            success = false;
-            continue;
-        }
-        const time_t cur_file_time = cur_file_stat.st_mtime;
-        valid_files.push_back(
-            std::pair<const time_t, std::string>(cur_file_time, cur_file_path));
-    }
-    valid_files.sort();  // sort the list of files by last modified time from
-                         // small to big.
-    uint32_t cur_file_count = valid_files.size();
-    for (auto cur_file : valid_files) {
-        if (cur_file_count > kMaxRingBufferFileNum ||
-            cur_file.first < delete_files_before) {
-            if (unlink(cur_file.second.c_str()) != 0) {
-                PLOG(ERROR) << "Error deleting file";
-                success = false;
-            }
-            cur_file_count--;
-        } else {
-            break;
-        }
-    }
-    return success;
-}
-
-// Helper function for |cpioArchiveFilesInDir|
-bool cpioWriteHeader(int out_fd, struct stat& st, const char* file_name,
-                     size_t file_name_len) {
-    std::array<char, 32 * 1024> read_buf;
-    ssize_t llen =
-        sprintf(read_buf.data(),
-                "%s%08X%08X%08X%08X%08X%08X%08X%08X%08X%08X%08X%08X%08X",
-                kCpioMagic, static_cast<int>(st.st_ino), st.st_mode, st.st_uid,
-                st.st_gid, static_cast<int>(st.st_nlink),
-                static_cast<int>(st.st_mtime), static_cast<int>(st.st_size),
-                major(st.st_dev), minor(st.st_dev), major(st.st_rdev),
-                minor(st.st_rdev), static_cast<uint32_t>(file_name_len), 0);
-    if (write(out_fd, read_buf.data(), llen) == -1) {
-        PLOG(ERROR) << "Error writing cpio header to file " << file_name;
-        return false;
-    }
-    if (write(out_fd, file_name, file_name_len) == -1) {
-        PLOG(ERROR) << "Error writing filename to file " << file_name;
-        return false;
-    }
-
-    // NUL Pad header up to 4 multiple bytes.
-    llen = (llen + file_name_len) % 4;
-    if (llen != 0) {
-        const uint32_t zero = 0;
-        if (write(out_fd, &zero, 4 - llen) == -1) {
-            PLOG(ERROR) << "Error padding 0s to file " << file_name;
-            return false;
-        }
-    }
-    return true;
-}
-
-// Helper function for |cpioArchiveFilesInDir|
-size_t cpioWriteFileContent(int fd_read, int out_fd, struct stat& st) {
-    // writing content of file
-    std::array<char, 32 * 1024> read_buf;
-    ssize_t llen = st.st_size;
-    size_t n_error = 0;
-    while (llen > 0) {
-        ssize_t bytes_read = read(fd_read, read_buf.data(), read_buf.size());
-        if (bytes_read == -1) {
-            PLOG(ERROR) << "Error reading file";
-            return ++n_error;
-        }
-        llen -= bytes_read;
-        if (write(out_fd, read_buf.data(), bytes_read) == -1) {
-            PLOG(ERROR) << "Error writing data to file";
-            return ++n_error;
-        }
-        if (bytes_read == 0) {  // this should never happen, but just in case
-                                // to unstuck from while loop
-            PLOG(ERROR) << "Unexpected read result";
-            n_error++;
-            break;
-        }
-    }
-    llen = st.st_size % 4;
-    if (llen != 0) {
-        const uint32_t zero = 0;
-        if (write(out_fd, &zero, 4 - llen) == -1) {
-            PLOG(ERROR) << "Error padding 0s to file";
-            return ++n_error;
-        }
-    }
-    return n_error;
-}
-
-// Helper function for |cpioArchiveFilesInDir|
-bool cpioWriteFileTrailer(int out_fd) {
-    std::array<char, 4096> read_buf;
-    read_buf.fill(0);
-    if (write(out_fd, read_buf.data(),
-              sprintf(read_buf.data(), "070701%040X%056X%08XTRAILER!!!", 1,
-                      0x0b, 0) +
-                  4) == -1) {
-        PLOG(ERROR) << "Error writing trailing bytes";
-        return false;
-    }
-    return true;
-}
-
-// Archives all files in |input_dir| and writes result into |out_fd|
-// Logic obtained from //external/toybox/toys/posix/cpio.c "Output cpio archive"
-// portion
-size_t cpioArchiveFilesInDir(int out_fd, const char* input_dir) {
-    struct dirent* dp;
-    size_t n_error = 0;
-    std::unique_ptr<DIR, decltype(&closedir)> dir_dump(opendir(input_dir),
-                                                       closedir);
-    if (!dir_dump) {
-        PLOG(ERROR) << "Failed to open directory";
-        return ++n_error;
-    }
-    while ((dp = readdir(dir_dump.get()))) {
-        if (dp->d_type != DT_REG) {
-            continue;
-        }
-        std::string cur_file_name(dp->d_name);
-        struct stat st;
-        const std::string cur_file_path = kTombstoneFolderPath + cur_file_name;
-        if (stat(cur_file_path.c_str(), &st) == -1) {
-            PLOG(ERROR) << "Failed to get file stat for " << cur_file_path;
-            n_error++;
-            continue;
-        }
-        const int fd_read = open(cur_file_path.c_str(), O_RDONLY);
-        if (fd_read == -1) {
-            PLOG(ERROR) << "Failed to open file " << cur_file_path;
-            n_error++;
-            continue;
-        }
-        std::string file_name_with_last_modified_time =
-            cur_file_name + "-" + std::to_string(st.st_mtime);
-        // string.size() does not include the null terminator. The cpio FreeBSD
-        // file header expects the null character to be included in the length.
-        const size_t file_name_len =
-            file_name_with_last_modified_time.size() + 1;
-        unique_fd file_auto_closer(fd_read);
-        if (!cpioWriteHeader(out_fd, st,
-                             file_name_with_last_modified_time.c_str(),
-                             file_name_len)) {
-            return ++n_error;
-        }
-        size_t write_error = cpioWriteFileContent(fd_read, out_fd, st);
-        if (write_error) {
-            return n_error + write_error;
-        }
-    }
-    if (!cpioWriteFileTrailer(out_fd)) {
-        return ++n_error;
-    }
-    return n_error;
-}
-
-// Helper function to create a non-const char*.
-std::vector<char> makeCharVec(const std::string& str) {
-    std::vector<char> vec(str.size() + 1);
-    vec.assign(str.begin(), str.end());
-    vec.push_back('\0');
-    return vec;
-}
-
-}  // namespace
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-using hidl_return_util::validateAndCall;
-using hidl_return_util::validateAndCallWithLock;
-
-WifiChip::WifiChip(
-    ChipId chip_id, bool is_primary,
-    const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
-    const std::weak_ptr<mode_controller::WifiModeController> mode_controller,
-    const std::shared_ptr<iface_util::WifiIfaceUtil> iface_util,
-    const std::weak_ptr<feature_flags::WifiFeatureFlags> feature_flags,
-    const std::function<void(const std::string&)>& handler)
-    : chip_id_(chip_id),
-      legacy_hal_(legacy_hal),
-      mode_controller_(mode_controller),
-      iface_util_(iface_util),
-      is_valid_(true),
-      current_mode_id_(feature_flags::chip_mode_ids::kInvalid),
-      modes_(feature_flags.lock()->getChipModes(is_primary)),
-      debug_ring_buffer_cb_registered_(false),
-      subsystemCallbackHandler_(handler) {
-    setActiveWlanIfaceNameProperty(kNoActiveWlanIfaceNamePropertyValue);
-}
-
-void WifiChip::invalidate() {
-    if (!writeRingbufferFilesInternal()) {
-        LOG(ERROR) << "Error writing files to flash";
-    }
-    invalidateAndRemoveAllIfaces();
-    setActiveWlanIfaceNameProperty(kNoActiveWlanIfaceNamePropertyValue);
-    legacy_hal_.reset();
-    event_cb_handler_.invalidate();
-    is_valid_ = false;
-}
-
-bool WifiChip::isValid() { return is_valid_; }
-
-std::set<sp<V1_4::IWifiChipEventCallback>> WifiChip::getEventCallbacks() {
-    return event_cb_handler_.getCallbacks();
-}
-
-Return<void> WifiChip::getId(getId_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getIdInternal, hidl_status_cb);
-}
-
-// Deprecated support for this callback
-Return<void> WifiChip::registerEventCallback(
-    const sp<V1_0::IWifiChipEventCallback>& event_callback,
-    registerEventCallback_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::registerEventCallbackInternal,
-                           hidl_status_cb, event_callback);
-}
-
-Return<void> WifiChip::getCapabilities(getCapabilities_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getCapabilitiesInternal, hidl_status_cb);
-}
-
-Return<void> WifiChip::getAvailableModes(getAvailableModes_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getAvailableModesInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiChip::configureChip(ChipModeId mode_id,
-                                     configureChip_cb hidl_status_cb) {
-    return validateAndCallWithLock(
-        this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-        &WifiChip::configureChipInternal, hidl_status_cb, mode_id);
-}
-
-Return<void> WifiChip::getMode(getMode_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getModeInternal, hidl_status_cb);
-}
-
-Return<void> WifiChip::requestChipDebugInfo(
-    requestChipDebugInfo_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::requestChipDebugInfoInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiChip::requestDriverDebugDump(
-    requestDriverDebugDump_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::requestDriverDebugDumpInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiChip::requestFirmwareDebugDump(
-    requestFirmwareDebugDump_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::requestFirmwareDebugDumpInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiChip::createApIface(createApIface_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::createApIfaceInternal, hidl_status_cb);
-}
-
-Return<void> WifiChip::createBridgedApIface(
-    createBridgedApIface_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::createBridgedApIfaceInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiChip::getApIfaceNames(getApIfaceNames_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getApIfaceNamesInternal, hidl_status_cb);
-}
-
-Return<void> WifiChip::getApIface(const hidl_string& ifname,
-                                  getApIface_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getApIfaceInternal, hidl_status_cb,
-                           ifname);
-}
-
-Return<void> WifiChip::removeApIface(const hidl_string& ifname,
-                                     removeApIface_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::removeApIfaceInternal, hidl_status_cb,
-                           ifname);
-}
-
-Return<void> WifiChip::removeIfaceInstanceFromBridgedApIface(
-    const hidl_string& ifname, const hidl_string& ifInstanceName,
-    removeIfaceInstanceFromBridgedApIface_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-        &WifiChip::removeIfaceInstanceFromBridgedApIfaceInternal,
-        hidl_status_cb, ifname, ifInstanceName);
-}
-
-Return<void> WifiChip::createNanIface(createNanIface_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::createNanIfaceInternal, hidl_status_cb);
-}
-
-Return<void> WifiChip::getNanIfaceNames(getNanIfaceNames_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getNanIfaceNamesInternal, hidl_status_cb);
-}
-
-Return<void> WifiChip::getNanIface(const hidl_string& ifname,
-                                   getNanIface_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getNanIfaceInternal, hidl_status_cb,
-                           ifname);
-}
-
-Return<void> WifiChip::removeNanIface(const hidl_string& ifname,
-                                      removeNanIface_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::removeNanIfaceInternal, hidl_status_cb,
-                           ifname);
-}
-
-Return<void> WifiChip::createP2pIface(createP2pIface_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::createP2pIfaceInternal, hidl_status_cb);
-}
-
-Return<void> WifiChip::getP2pIfaceNames(getP2pIfaceNames_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getP2pIfaceNamesInternal, hidl_status_cb);
-}
-
-Return<void> WifiChip::getP2pIface(const hidl_string& ifname,
-                                   getP2pIface_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getP2pIfaceInternal, hidl_status_cb,
-                           ifname);
-}
-
-Return<void> WifiChip::removeP2pIface(const hidl_string& ifname,
-                                      removeP2pIface_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::removeP2pIfaceInternal, hidl_status_cb,
-                           ifname);
-}
-
-Return<void> WifiChip::createStaIface(createStaIface_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::createStaIfaceInternal, hidl_status_cb);
-}
-
-Return<void> WifiChip::getStaIfaceNames(getStaIfaceNames_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getStaIfaceNamesInternal, hidl_status_cb);
-}
-
-Return<void> WifiChip::getStaIface(const hidl_string& ifname,
-                                   getStaIface_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getStaIfaceInternal, hidl_status_cb,
-                           ifname);
-}
-
-Return<void> WifiChip::removeStaIface(const hidl_string& ifname,
-                                      removeStaIface_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::removeStaIfaceInternal, hidl_status_cb,
-                           ifname);
-}
-
-Return<void> WifiChip::createRttController(
-    const sp<IWifiIface>& bound_iface, createRttController_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::createRttControllerInternal,
-                           hidl_status_cb, bound_iface);
-}
-
-Return<void> WifiChip::getDebugRingBuffersStatus(
-    getDebugRingBuffersStatus_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getDebugRingBuffersStatusInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiChip::startLoggingToDebugRingBuffer(
-    const hidl_string& ring_name, WifiDebugRingBufferVerboseLevel verbose_level,
-    uint32_t max_interval_in_sec, uint32_t min_data_size_in_bytes,
-    startLoggingToDebugRingBuffer_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::startLoggingToDebugRingBufferInternal,
-                           hidl_status_cb, ring_name, verbose_level,
-                           max_interval_in_sec, min_data_size_in_bytes);
-}
-
-Return<void> WifiChip::forceDumpToDebugRingBuffer(
-    const hidl_string& ring_name,
-    forceDumpToDebugRingBuffer_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::forceDumpToDebugRingBufferInternal,
-                           hidl_status_cb, ring_name);
-}
-
-Return<void> WifiChip::flushRingBufferToFile(
-    flushRingBufferToFile_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::flushRingBufferToFileInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiChip::stopLoggingToDebugRingBuffer(
-    stopLoggingToDebugRingBuffer_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::stopLoggingToDebugRingBufferInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiChip::getDebugHostWakeReasonStats(
-    getDebugHostWakeReasonStats_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getDebugHostWakeReasonStatsInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiChip::enableDebugErrorAlerts(
-    bool enable, enableDebugErrorAlerts_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::enableDebugErrorAlertsInternal,
-                           hidl_status_cb, enable);
-}
-
-Return<void> WifiChip::selectTxPowerScenario(
-    V1_1::IWifiChip::TxPowerScenario scenario,
-    selectTxPowerScenario_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::selectTxPowerScenarioInternal,
-                           hidl_status_cb, scenario);
-}
-
-Return<void> WifiChip::resetTxPowerScenario(
-    resetTxPowerScenario_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::resetTxPowerScenarioInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiChip::setLatencyMode(LatencyMode mode,
-                                      setLatencyMode_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::setLatencyModeInternal, hidl_status_cb,
-                           mode);
-}
-
-Return<void> WifiChip::registerEventCallback_1_2(
-    const sp<V1_2::IWifiChipEventCallback>& event_callback,
-    registerEventCallback_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::registerEventCallbackInternal_1_2,
-                           hidl_status_cb, event_callback);
-}
-
-Return<void> WifiChip::selectTxPowerScenario_1_2(
-    TxPowerScenario scenario, selectTxPowerScenario_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::selectTxPowerScenarioInternal_1_2,
-                           hidl_status_cb, scenario);
-}
-
-Return<void> WifiChip::getCapabilities_1_3(getCapabilities_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getCapabilitiesInternal_1_3,
-                           hidl_status_cb);
-}
-
-Return<void> WifiChip::getCapabilities_1_5(
-    getCapabilities_1_5_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getCapabilitiesInternal_1_5,
-                           hidl_status_cb);
-}
-
-Return<void> WifiChip::debug(const hidl_handle& handle,
-                             const hidl_vec<hidl_string>&) {
-    if (handle != nullptr && handle->numFds >= 1) {
-        {
-            std::unique_lock<std::mutex> lk(lock_t);
-            for (const auto& item : ringbuffer_map_) {
-                forceDumpToDebugRingBufferInternal(item.first);
-            }
-            // unique_lock unlocked here
-        }
-        usleep(100 * 1000);  // sleep for 100 milliseconds to wait for
-                             // ringbuffer updates.
-        int fd = handle->data[0];
-        if (!writeRingbufferFilesInternal()) {
-            LOG(ERROR) << "Error writing files to flash";
-        }
-        uint32_t n_error = cpioArchiveFilesInDir(fd, kTombstoneFolderPath);
-        if (n_error != 0) {
-            LOG(ERROR) << n_error << " errors occured in cpio function";
-        }
-        fsync(fd);
-    } else {
-        LOG(ERROR) << "File handle error";
-    }
-    return Void();
-}
-
-Return<void> WifiChip::createRttController_1_4(
-    const sp<IWifiIface>& bound_iface,
-    createRttController_1_4_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::createRttControllerInternal_1_4,
-                           hidl_status_cb, bound_iface);
-}
-
-Return<void> WifiChip::registerEventCallback_1_4(
-    const sp<V1_4::IWifiChipEventCallback>& event_callback,
-    registerEventCallback_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::registerEventCallbackInternal_1_4,
-                           hidl_status_cb, event_callback);
-}
-
-Return<void> WifiChip::setMultiStaPrimaryConnection(
-    const hidl_string& ifname, setMultiStaPrimaryConnection_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::setMultiStaPrimaryConnectionInternal,
-                           hidl_status_cb, ifname);
-}
-
-Return<void> WifiChip::setMultiStaUseCase(
-    MultiStaUseCase use_case, setMultiStaUseCase_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::setMultiStaUseCaseInternal,
-                           hidl_status_cb, use_case);
-}
-
-Return<void> WifiChip::setCoexUnsafeChannels(
-    const hidl_vec<CoexUnsafeChannel>& unsafeChannels,
-    hidl_bitfield<CoexRestriction> restrictions,
-    setCoexUnsafeChannels_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::setCoexUnsafeChannelsInternal,
-                           hidl_status_cb, unsafeChannels, restrictions);
-}
-
-Return<void> WifiChip::setCountryCode(const hidl_array<int8_t, 2>& code,
-                                      setCountryCode_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiChip::setCountryCodeInternal, hidl_status_cb,
-                           code);
-}
-
-Return<void> WifiChip::getUsableChannels(
-    WifiBand band, hidl_bitfield<WifiIfaceMode> ifaceModeMask,
-    hidl_bitfield<UsableChannelFilter> filterMask,
-    getUsableChannels_cb _hidl_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getUsableChannelsInternal, _hidl_cb, band,
-                           ifaceModeMask, filterMask);
-}
-
-Return<void> WifiChip::triggerSubsystemRestart(
-    triggerSubsystemRestart_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::triggerSubsystemRestartInternal,
-                           hidl_status_cb);
-}
-
-void WifiChip::invalidateAndRemoveAllIfaces() {
-    invalidateAndClearBridgedApAll();
-    invalidateAndClearAll(ap_ifaces_);
-    invalidateAndClearAll(nan_ifaces_);
-    invalidateAndClearAll(p2p_ifaces_);
-    invalidateAndClearAll(sta_ifaces_);
-    // Since all the ifaces are invalid now, all RTT controller objects
-    // using those ifaces also need to be invalidated.
-    for (const auto& rtt : rtt_controllers_) {
-        rtt->invalidate();
-    }
-    rtt_controllers_.clear();
-}
-
-void WifiChip::invalidateAndRemoveDependencies(
-    const std::string& removed_iface_name) {
-    for (auto it = nan_ifaces_.begin(); it != nan_ifaces_.end();) {
-        auto nan_iface = *it;
-        if (nan_iface->getName() == removed_iface_name) {
-            nan_iface->invalidate();
-            for (const auto& callback : event_cb_handler_.getCallbacks()) {
-                if (!callback
-                         ->onIfaceRemoved(IfaceType::NAN, removed_iface_name)
-                         .isOk()) {
-                    LOG(ERROR) << "Failed to invoke onIfaceRemoved callback";
-                }
-            }
-            it = nan_ifaces_.erase(it);
-        } else {
-            ++it;
-        }
-    }
-
-    for (auto it = rtt_controllers_.begin(); it != rtt_controllers_.end();) {
-        auto rtt = *it;
-        if (rtt->getIfaceName() == removed_iface_name) {
-            rtt->invalidate();
-            it = rtt_controllers_.erase(it);
-        } else {
-            ++it;
-        }
-    }
-}
-
-std::pair<WifiStatus, ChipId> WifiChip::getIdInternal() {
-    return {createWifiStatus(WifiStatusCode::SUCCESS), chip_id_};
-}
-
-WifiStatus WifiChip::registerEventCallbackInternal(
-    const sp<V1_0::IWifiChipEventCallback>& /* event_callback */) {
-    // Deprecated support for this callback.
-    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
-}
-
-std::pair<WifiStatus, uint32_t> WifiChip::getCapabilitiesInternal() {
-    // Deprecated support for this callback.
-    return {createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED), 0};
-}
-
-std::pair<WifiStatus, std::vector<V1_4::IWifiChip::ChipMode>>
-WifiChip::getAvailableModesInternal() {
-    return {createWifiStatus(WifiStatusCode::SUCCESS), modes_};
-}
-
-WifiStatus WifiChip::configureChipInternal(
-    /* NONNULL */ std::unique_lock<std::recursive_mutex>* lock,
-    ChipModeId mode_id) {
-    if (!isValidModeId(mode_id)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    if (mode_id == current_mode_id_) {
-        LOG(DEBUG) << "Already in the specified mode " << mode_id;
-        return createWifiStatus(WifiStatusCode::SUCCESS);
-    }
-    WifiStatus status = handleChipConfiguration(lock, mode_id);
-    if (status.code != WifiStatusCode::SUCCESS) {
-        for (const auto& callback : event_cb_handler_.getCallbacks()) {
-            if (!callback->onChipReconfigureFailure(status).isOk()) {
-                LOG(ERROR)
-                    << "Failed to invoke onChipReconfigureFailure callback";
-            }
-        }
-        return status;
-    }
-    for (const auto& callback : event_cb_handler_.getCallbacks()) {
-        if (!callback->onChipReconfigured(mode_id).isOk()) {
-            LOG(ERROR) << "Failed to invoke onChipReconfigured callback";
-        }
-    }
-    current_mode_id_ = mode_id;
-    LOG(INFO) << "Configured chip in mode " << mode_id;
-    setActiveWlanIfaceNameProperty(getFirstActiveWlanIfaceName());
-
-    legacy_hal_.lock()->registerSubsystemRestartCallbackHandler(
-        subsystemCallbackHandler_);
-
-    return status;
-}
-
-std::pair<WifiStatus, uint32_t> WifiChip::getModeInternal() {
-    if (!isValidModeId(current_mode_id_)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE),
-                current_mode_id_};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), current_mode_id_};
-}
-
-std::pair<WifiStatus, V1_4::IWifiChip::ChipDebugInfo>
-WifiChip::requestChipDebugInfoInternal() {
-    V1_4::IWifiChip::ChipDebugInfo result;
-    legacy_hal::wifi_error legacy_status;
-    std::string driver_desc;
-    const auto ifname = getFirstActiveWlanIfaceName();
-    std::tie(legacy_status, driver_desc) =
-        legacy_hal_.lock()->getDriverVersion(ifname);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        LOG(ERROR) << "Failed to get driver version: "
-                   << legacyErrorToString(legacy_status);
-        WifiStatus status = createWifiStatusFromLegacyError(
-            legacy_status, "failed to get driver version");
-        return {status, result};
-    }
-    result.driverDescription = driver_desc.c_str();
-
-    std::string firmware_desc;
-    std::tie(legacy_status, firmware_desc) =
-        legacy_hal_.lock()->getFirmwareVersion(ifname);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        LOG(ERROR) << "Failed to get firmware version: "
-                   << legacyErrorToString(legacy_status);
-        WifiStatus status = createWifiStatusFromLegacyError(
-            legacy_status, "failed to get firmware version");
-        return {status, result};
-    }
-    result.firmwareDescription = firmware_desc.c_str();
-
-    return {createWifiStatus(WifiStatusCode::SUCCESS), result};
-}
-
-std::pair<WifiStatus, std::vector<uint8_t>>
-WifiChip::requestDriverDebugDumpInternal() {
-    legacy_hal::wifi_error legacy_status;
-    std::vector<uint8_t> driver_dump;
-    std::tie(legacy_status, driver_dump) =
-        legacy_hal_.lock()->requestDriverMemoryDump(
-            getFirstActiveWlanIfaceName());
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        LOG(ERROR) << "Failed to get driver debug dump: "
-                   << legacyErrorToString(legacy_status);
-        return {createWifiStatusFromLegacyError(legacy_status),
-                std::vector<uint8_t>()};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), driver_dump};
-}
-
-std::pair<WifiStatus, std::vector<uint8_t>>
-WifiChip::requestFirmwareDebugDumpInternal() {
-    legacy_hal::wifi_error legacy_status;
-    std::vector<uint8_t> firmware_dump;
-    std::tie(legacy_status, firmware_dump) =
-        legacy_hal_.lock()->requestFirmwareMemoryDump(
-            getFirstActiveWlanIfaceName());
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        LOG(ERROR) << "Failed to get firmware debug dump: "
-                   << legacyErrorToString(legacy_status);
-        return {createWifiStatusFromLegacyError(legacy_status), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), firmware_dump};
-}
-
-WifiStatus WifiChip::createVirtualApInterface(const std::string& apVirtIf) {
-    legacy_hal::wifi_error legacy_status;
-    legacy_status = legacy_hal_.lock()->createVirtualInterface(
-        apVirtIf,
-        hidl_struct_util::convertHidlIfaceTypeToLegacy(IfaceType::AP));
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        LOG(ERROR) << "Failed to add interface: " << apVirtIf << " "
-                   << legacyErrorToString(legacy_status);
-        return createWifiStatusFromLegacyError(legacy_status);
-    }
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-sp<WifiApIface> WifiChip::newWifiApIface(std::string& ifname) {
-    std::vector<std::string> ap_instances;
-    for (auto const& it : br_ifaces_ap_instances_) {
-        if (it.first == ifname) {
-            ap_instances = it.second;
-        }
-    }
-    sp<WifiApIface> iface =
-        new WifiApIface(ifname, ap_instances, legacy_hal_, iface_util_);
-    ap_ifaces_.push_back(iface);
-    for (const auto& callback : event_cb_handler_.getCallbacks()) {
-        if (!callback->onIfaceAdded(IfaceType::AP, ifname).isOk()) {
-            LOG(ERROR) << "Failed to invoke onIfaceAdded callback";
-        }
-    }
-    setActiveWlanIfaceNameProperty(getFirstActiveWlanIfaceName());
-    return iface;
-}
-
-std::pair<WifiStatus, sp<V1_5::IWifiApIface>>
-WifiChip::createApIfaceInternal() {
-    if (!canCurrentModeSupportIfaceOfTypeWithCurrentIfaces(IfaceType::AP)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
-    }
-    std::string ifname = allocateApIfaceName();
-    WifiStatus status = createVirtualApInterface(ifname);
-    if (status.code != WifiStatusCode::SUCCESS) {
-        return {status, {}};
-    }
-    sp<WifiApIface> iface = newWifiApIface(ifname);
-    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
-}
-
-std::pair<WifiStatus, sp<V1_5::IWifiApIface>>
-WifiChip::createBridgedApIfaceInternal() {
-    if (!canCurrentModeSupportIfaceOfTypeWithCurrentIfaces(IfaceType::AP)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
-    }
-    std::vector<std::string> ap_instances = allocateBridgedApInstanceNames();
-    if (ap_instances.size() < 2) {
-        LOG(ERROR) << "Fail to allocate two instances";
-        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
-    }
-    std::string br_ifname = kApBridgeIfacePrefix + ap_instances[0];
-    for (int i = 0; i < 2; i++) {
-        WifiStatus status = createVirtualApInterface(ap_instances[i]);
-        if (status.code != WifiStatusCode::SUCCESS) {
-            if (i != 0) {  // The failure happened when creating second virtual
-                           // iface.
-                legacy_hal_.lock()->deleteVirtualInterface(
-                    ap_instances.front());  // Remove the first virtual iface.
-            }
-            return {status, {}};
-        }
-    }
-    br_ifaces_ap_instances_[br_ifname] = ap_instances;
-    if (!iface_util_->createBridge(br_ifname)) {
-        LOG(ERROR) << "Failed createBridge - br_name=" << br_ifname.c_str();
-        invalidateAndClearBridgedAp(br_ifname);
-        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
-    }
-    for (auto const& instance : ap_instances) {
-        // Bind ap instance interface to AP bridge
-        if (!iface_util_->addIfaceToBridge(br_ifname, instance)) {
-            LOG(ERROR) << "Failed add if to Bridge - if_name="
-                       << instance.c_str();
-            invalidateAndClearBridgedAp(br_ifname);
-            return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
-        }
-    }
-    sp<WifiApIface> iface = newWifiApIface(br_ifname);
-    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
-}
-
-std::pair<WifiStatus, std::vector<hidl_string>>
-WifiChip::getApIfaceNamesInternal() {
-    if (ap_ifaces_.empty()) {
-        return {createWifiStatus(WifiStatusCode::SUCCESS), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), getNames(ap_ifaces_)};
-}
-
-std::pair<WifiStatus, sp<V1_5::IWifiApIface>> WifiChip::getApIfaceInternal(
-    const std::string& ifname) {
-    const auto iface = findUsingName(ap_ifaces_, ifname);
-    if (!iface.get()) {
-        return {createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS), nullptr};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
-}
-
-WifiStatus WifiChip::removeApIfaceInternal(const std::string& ifname) {
-    const auto iface = findUsingName(ap_ifaces_, ifname);
-    if (!iface.get()) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    // Invalidate & remove any dependent objects first.
-    // Note: This is probably not required because we never create
-    // nan/rtt objects over AP iface. But, there is no harm to do it
-    // here and not make that assumption all over the place.
-    invalidateAndRemoveDependencies(ifname);
-    // Clear the bridge interface and the iface instance.
-    invalidateAndClearBridgedAp(ifname);
-    invalidateAndClear(ap_ifaces_, iface);
-    for (const auto& callback : event_cb_handler_.getCallbacks()) {
-        if (!callback->onIfaceRemoved(IfaceType::AP, ifname).isOk()) {
-            LOG(ERROR) << "Failed to invoke onIfaceRemoved callback";
-        }
-    }
-    setActiveWlanIfaceNameProperty(getFirstActiveWlanIfaceName());
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-WifiStatus WifiChip::removeIfaceInstanceFromBridgedApIfaceInternal(
-    const std::string& ifname, const std::string& ifInstanceName) {
-    const auto iface = findUsingName(ap_ifaces_, ifname);
-    if (!iface.get() || ifInstanceName.empty()) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    // Requires to remove one of the instance in bridge mode
-    for (auto const& it : br_ifaces_ap_instances_) {
-        if (it.first == ifname) {
-            std::vector<std::string> ap_instances = it.second;
-            for (auto const& iface : ap_instances) {
-                if (iface == ifInstanceName) {
-                    if (!iface_util_->removeIfaceFromBridge(it.first, iface)) {
-                        LOG(ERROR)
-                            << "Failed to remove interface: " << ifInstanceName
-                            << " from " << ifname;
-                        return createWifiStatus(
-                            WifiStatusCode::ERROR_NOT_AVAILABLE);
-                    }
-                    legacy_hal::wifi_error legacy_status =
-                        legacy_hal_.lock()->deleteVirtualInterface(iface);
-                    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-                        LOG(ERROR) << "Failed to del interface: " << iface
-                                   << " " << legacyErrorToString(legacy_status);
-                        return createWifiStatusFromLegacyError(legacy_status);
-                    }
-                    ap_instances.erase(
-                        std::remove(ap_instances.begin(), ap_instances.end(),
-                                    ifInstanceName),
-                        ap_instances.end());
-                    br_ifaces_ap_instances_[ifname] = ap_instances;
-                    break;
-                }
-            }
-            break;
-        }
-    }
-    iface->removeInstance(ifInstanceName);
-    setActiveWlanIfaceNameProperty(getFirstActiveWlanIfaceName());
-
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-std::pair<WifiStatus, sp<V1_4::IWifiNanIface>>
-WifiChip::createNanIfaceInternal() {
-    if (!canCurrentModeSupportIfaceOfTypeWithCurrentIfaces(IfaceType::NAN)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
-    }
-    bool is_dedicated_iface = true;
-    std::string ifname = getPredefinedNanIfaceName();
-    if (ifname.empty() || !iface_util_->ifNameToIndex(ifname)) {
-        // Use the first shared STA iface (wlan0) if a dedicated aware iface is
-        // not defined.
-        ifname = getFirstActiveWlanIfaceName();
-        is_dedicated_iface = false;
-    }
-    sp<WifiNanIface> iface =
-        new WifiNanIface(ifname, is_dedicated_iface, legacy_hal_, iface_util_);
-    nan_ifaces_.push_back(iface);
-    for (const auto& callback : event_cb_handler_.getCallbacks()) {
-        if (!callback->onIfaceAdded(IfaceType::NAN, ifname).isOk()) {
-            LOG(ERROR) << "Failed to invoke onIfaceAdded callback";
-        }
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
-}
-
-std::pair<WifiStatus, std::vector<hidl_string>>
-WifiChip::getNanIfaceNamesInternal() {
-    if (nan_ifaces_.empty()) {
-        return {createWifiStatus(WifiStatusCode::SUCCESS), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), getNames(nan_ifaces_)};
-}
-
-std::pair<WifiStatus, sp<V1_4::IWifiNanIface>> WifiChip::getNanIfaceInternal(
-    const std::string& ifname) {
-    const auto iface = findUsingName(nan_ifaces_, ifname);
-    if (!iface.get()) {
-        return {createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS), nullptr};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
-}
-
-WifiStatus WifiChip::removeNanIfaceInternal(const std::string& ifname) {
-    const auto iface = findUsingName(nan_ifaces_, ifname);
-    if (!iface.get()) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    invalidateAndClear(nan_ifaces_, iface);
-    for (const auto& callback : event_cb_handler_.getCallbacks()) {
-        if (!callback->onIfaceRemoved(IfaceType::NAN, ifname).isOk()) {
-            LOG(ERROR) << "Failed to invoke onIfaceAdded callback";
-        }
-    }
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-std::pair<WifiStatus, sp<IWifiP2pIface>> WifiChip::createP2pIfaceInternal() {
-    if (!canCurrentModeSupportIfaceOfTypeWithCurrentIfaces(IfaceType::P2P)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
-    }
-    std::string ifname = getPredefinedP2pIfaceName();
-    sp<WifiP2pIface> iface = new WifiP2pIface(ifname, legacy_hal_);
-    p2p_ifaces_.push_back(iface);
-    for (const auto& callback : event_cb_handler_.getCallbacks()) {
-        if (!callback->onIfaceAdded(IfaceType::P2P, ifname).isOk()) {
-            LOG(ERROR) << "Failed to invoke onIfaceAdded callback";
-        }
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
-}
-
-std::pair<WifiStatus, std::vector<hidl_string>>
-WifiChip::getP2pIfaceNamesInternal() {
-    if (p2p_ifaces_.empty()) {
-        return {createWifiStatus(WifiStatusCode::SUCCESS), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), getNames(p2p_ifaces_)};
-}
-
-std::pair<WifiStatus, sp<IWifiP2pIface>> WifiChip::getP2pIfaceInternal(
-    const std::string& ifname) {
-    const auto iface = findUsingName(p2p_ifaces_, ifname);
-    if (!iface.get()) {
-        return {createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS), nullptr};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
-}
-
-WifiStatus WifiChip::removeP2pIfaceInternal(const std::string& ifname) {
-    const auto iface = findUsingName(p2p_ifaces_, ifname);
-    if (!iface.get()) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    invalidateAndClear(p2p_ifaces_, iface);
-    for (const auto& callback : event_cb_handler_.getCallbacks()) {
-        if (!callback->onIfaceRemoved(IfaceType::P2P, ifname).isOk()) {
-            LOG(ERROR) << "Failed to invoke onIfaceRemoved callback";
-        }
-    }
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-std::pair<WifiStatus, sp<V1_5::IWifiStaIface>>
-WifiChip::createStaIfaceInternal() {
-    if (!canCurrentModeSupportIfaceOfTypeWithCurrentIfaces(IfaceType::STA)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
-    }
-    std::string ifname = allocateStaIfaceName();
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->createVirtualInterface(
-            ifname,
-            hidl_struct_util::convertHidlIfaceTypeToLegacy(IfaceType::STA));
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        LOG(ERROR) << "Failed to add interface: " << ifname << " "
-                   << legacyErrorToString(legacy_status);
-        return {createWifiStatusFromLegacyError(legacy_status), {}};
-    }
-    sp<WifiStaIface> iface = new WifiStaIface(ifname, legacy_hal_, iface_util_);
-    sta_ifaces_.push_back(iface);
-    for (const auto& callback : event_cb_handler_.getCallbacks()) {
-        if (!callback->onIfaceAdded(IfaceType::STA, ifname).isOk()) {
-            LOG(ERROR) << "Failed to invoke onIfaceAdded callback";
-        }
-    }
-    setActiveWlanIfaceNameProperty(getFirstActiveWlanIfaceName());
-    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
-}
-
-std::pair<WifiStatus, std::vector<hidl_string>>
-WifiChip::getStaIfaceNamesInternal() {
-    if (sta_ifaces_.empty()) {
-        return {createWifiStatus(WifiStatusCode::SUCCESS), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), getNames(sta_ifaces_)};
-}
-
-std::pair<WifiStatus, sp<V1_5::IWifiStaIface>> WifiChip::getStaIfaceInternal(
-    const std::string& ifname) {
-    const auto iface = findUsingName(sta_ifaces_, ifname);
-    if (!iface.get()) {
-        return {createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS), nullptr};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
-}
-
-WifiStatus WifiChip::removeStaIfaceInternal(const std::string& ifname) {
-    const auto iface = findUsingName(sta_ifaces_, ifname);
-    if (!iface.get()) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    // Invalidate & remove any dependent objects first.
-    invalidateAndRemoveDependencies(ifname);
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->deleteVirtualInterface(ifname);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        LOG(ERROR) << "Failed to remove interface: " << ifname << " "
-                   << legacyErrorToString(legacy_status);
-    }
-    invalidateAndClear(sta_ifaces_, iface);
-    for (const auto& callback : event_cb_handler_.getCallbacks()) {
-        if (!callback->onIfaceRemoved(IfaceType::STA, ifname).isOk()) {
-            LOG(ERROR) << "Failed to invoke onIfaceRemoved callback";
-        }
-    }
-    setActiveWlanIfaceNameProperty(getFirstActiveWlanIfaceName());
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-std::pair<WifiStatus, sp<V1_0::IWifiRttController>>
-WifiChip::createRttControllerInternal(const sp<IWifiIface>& /*bound_iface*/) {
-    LOG(ERROR) << "createRttController is not supported on this HAL";
-    return {createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED), {}};
-}
-
-std::pair<WifiStatus, std::vector<WifiDebugRingBufferStatus>>
-WifiChip::getDebugRingBuffersStatusInternal() {
-    legacy_hal::wifi_error legacy_status;
-    std::vector<legacy_hal::wifi_ring_buffer_status>
-        legacy_ring_buffer_status_vec;
-    std::tie(legacy_status, legacy_ring_buffer_status_vec) =
-        legacy_hal_.lock()->getRingBuffersStatus(getFirstActiveWlanIfaceName());
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        return {createWifiStatusFromLegacyError(legacy_status), {}};
-    }
-    std::vector<WifiDebugRingBufferStatus> hidl_ring_buffer_status_vec;
-    if (!hidl_struct_util::convertLegacyVectorOfDebugRingBufferStatusToHidl(
-            legacy_ring_buffer_status_vec, &hidl_ring_buffer_status_vec)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS),
-            hidl_ring_buffer_status_vec};
-}
-
-WifiStatus WifiChip::startLoggingToDebugRingBufferInternal(
-    const hidl_string& ring_name, WifiDebugRingBufferVerboseLevel verbose_level,
-    uint32_t max_interval_in_sec, uint32_t min_data_size_in_bytes) {
-    WifiStatus status = registerDebugRingBufferCallback();
-    if (status.code != WifiStatusCode::SUCCESS) {
-        return status;
-    }
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->startRingBufferLogging(
-            getFirstActiveWlanIfaceName(), ring_name,
-            static_cast<
-                std::underlying_type<WifiDebugRingBufferVerboseLevel>::type>(
-                verbose_level),
-            max_interval_in_sec, min_data_size_in_bytes);
-    ringbuffer_map_.insert(std::pair<std::string, Ringbuffer>(
-        ring_name, Ringbuffer(kMaxBufferSizeBytes)));
-    // if verbose logging enabled, turn up HAL daemon logging as well.
-    if (verbose_level < WifiDebugRingBufferVerboseLevel::VERBOSE) {
-        android::base::SetMinimumLogSeverity(android::base::DEBUG);
-    } else {
-        android::base::SetMinimumLogSeverity(android::base::VERBOSE);
-    }
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiChip::forceDumpToDebugRingBufferInternal(
-    const hidl_string& ring_name) {
-    WifiStatus status = registerDebugRingBufferCallback();
-    if (status.code != WifiStatusCode::SUCCESS) {
-        return status;
-    }
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->getRingBufferData(getFirstActiveWlanIfaceName(),
-                                              ring_name);
-
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiChip::flushRingBufferToFileInternal() {
-    if (!writeRingbufferFilesInternal()) {
-        LOG(ERROR) << "Error writing files to flash";
-        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-    }
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-WifiStatus WifiChip::stopLoggingToDebugRingBufferInternal() {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->deregisterRingBufferCallbackHandler(
-            getFirstActiveWlanIfaceName());
-    if (legacy_status == legacy_hal::WIFI_SUCCESS) {
-        debug_ring_buffer_cb_registered_ = false;
-    }
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-std::pair<WifiStatus, WifiDebugHostWakeReasonStats>
-WifiChip::getDebugHostWakeReasonStatsInternal() {
-    legacy_hal::wifi_error legacy_status;
-    legacy_hal::WakeReasonStats legacy_stats;
-    std::tie(legacy_status, legacy_stats) =
-        legacy_hal_.lock()->getWakeReasonStats(getFirstActiveWlanIfaceName());
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        return {createWifiStatusFromLegacyError(legacy_status), {}};
-    }
-    WifiDebugHostWakeReasonStats hidl_stats;
-    if (!hidl_struct_util::convertLegacyWakeReasonStatsToHidl(legacy_stats,
-                                                              &hidl_stats)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_stats};
-}
-
-WifiStatus WifiChip::enableDebugErrorAlertsInternal(bool enable) {
-    legacy_hal::wifi_error legacy_status;
-    if (enable) {
-        android::wp<WifiChip> weak_ptr_this(this);
-        const auto& on_alert_callback = [weak_ptr_this](
-                                            int32_t error_code,
-                                            std::vector<uint8_t> debug_data) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                if (!callback->onDebugErrorAlert(error_code, debug_data)
-                         .isOk()) {
-                    LOG(ERROR) << "Failed to invoke onDebugErrorAlert callback";
-                }
-            }
-        };
-        legacy_status = legacy_hal_.lock()->registerErrorAlertCallbackHandler(
-            getFirstActiveWlanIfaceName(), on_alert_callback);
-    } else {
-        legacy_status = legacy_hal_.lock()->deregisterErrorAlertCallbackHandler(
-            getFirstActiveWlanIfaceName());
-    }
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiChip::selectTxPowerScenarioInternal(
-    V1_1::IWifiChip::TxPowerScenario scenario) {
-    auto legacy_status = legacy_hal_.lock()->selectTxPowerScenario(
-        getFirstActiveWlanIfaceName(),
-        hidl_struct_util::convertHidlTxPowerScenarioToLegacy(scenario));
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiChip::resetTxPowerScenarioInternal() {
-    auto legacy_status =
-        legacy_hal_.lock()->resetTxPowerScenario(getFirstActiveWlanIfaceName());
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiChip::setLatencyModeInternal(LatencyMode mode) {
-    auto legacy_status = legacy_hal_.lock()->setLatencyMode(
-        getFirstActiveWlanIfaceName(),
-        hidl_struct_util::convertHidlLatencyModeToLegacy(mode));
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiChip::registerEventCallbackInternal_1_2(
-    const sp<V1_2::IWifiChipEventCallback>& /* event_callback */) {
-    // Deprecated support for this callback.
-    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
-}
-
-WifiStatus WifiChip::selectTxPowerScenarioInternal_1_2(
-    TxPowerScenario scenario) {
-    auto legacy_status = legacy_hal_.lock()->selectTxPowerScenario(
-        getFirstActiveWlanIfaceName(),
-        hidl_struct_util::convertHidlTxPowerScenarioToLegacy_1_2(scenario));
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-std::pair<WifiStatus, uint32_t> WifiChip::getCapabilitiesInternal_1_3() {
-    // Deprecated support for this callback.
-    return {createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED), 0};
-}
-
-std::pair<WifiStatus, uint32_t> WifiChip::getCapabilitiesInternal_1_5() {
-    legacy_hal::wifi_error legacy_status;
-    uint64_t legacy_feature_set;
-    uint32_t legacy_logger_feature_set;
-    const auto ifname = getFirstActiveWlanIfaceName();
-    std::tie(legacy_status, legacy_feature_set) =
-        legacy_hal_.lock()->getSupportedFeatureSet(ifname);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        return {createWifiStatusFromLegacyError(legacy_status), 0};
-    }
-    std::tie(legacy_status, legacy_logger_feature_set) =
-        legacy_hal_.lock()->getLoggerSupportedFeatureSet(ifname);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        // some devices don't support querying logger feature set
-        legacy_logger_feature_set = 0;
-    }
-    uint32_t hidl_caps;
-    if (!hidl_struct_util::convertLegacyFeaturesToHidlChipCapabilities(
-            legacy_feature_set, legacy_logger_feature_set, &hidl_caps)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), 0};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
-}
-
-std::pair<WifiStatus, sp<V1_4::IWifiRttController>>
-WifiChip::createRttControllerInternal_1_4(const sp<IWifiIface>& bound_iface) {
-    if (sta_ifaces_.size() == 0 &&
-        !canCurrentModeSupportIfaceOfType(IfaceType::STA)) {
-        LOG(ERROR)
-            << "createRttControllerInternal_1_4: Chip cannot support STAs "
-               "(and RTT by extension)";
-        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
-    }
-    sp<WifiRttController> rtt = new WifiRttController(
-        getFirstActiveWlanIfaceName(), bound_iface, legacy_hal_);
-    rtt_controllers_.emplace_back(rtt);
-    return {createWifiStatus(WifiStatusCode::SUCCESS), rtt};
-}
-
-WifiStatus WifiChip::registerEventCallbackInternal_1_4(
-    const sp<V1_4::IWifiChipEventCallback>& event_callback) {
-    if (!event_cb_handler_.addCallback(event_callback)) {
-        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-    }
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-WifiStatus WifiChip::setMultiStaPrimaryConnectionInternal(
-    const std::string& ifname) {
-    auto legacy_status =
-        legacy_hal_.lock()->multiStaSetPrimaryConnection(ifname);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiChip::setMultiStaUseCaseInternal(MultiStaUseCase use_case) {
-    auto legacy_status = legacy_hal_.lock()->multiStaSetUseCase(
-        hidl_struct_util::convertHidlMultiStaUseCaseToLegacy(use_case));
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiChip::setCoexUnsafeChannelsInternal(
-    std::vector<CoexUnsafeChannel> unsafe_channels, uint32_t restrictions) {
-    std::vector<legacy_hal::wifi_coex_unsafe_channel> legacy_unsafe_channels;
-    if (!hidl_struct_util::convertHidlVectorOfCoexUnsafeChannelToLegacy(
-            unsafe_channels, &legacy_unsafe_channels)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    uint32_t legacy_restrictions = 0;
-    if (restrictions & CoexRestriction::WIFI_DIRECT) {
-        legacy_restrictions |= legacy_hal::wifi_coex_restriction::WIFI_DIRECT;
-    }
-    if (restrictions & CoexRestriction::SOFTAP) {
-        legacy_restrictions |= legacy_hal::wifi_coex_restriction::SOFTAP;
-    }
-    if (restrictions & CoexRestriction::WIFI_AWARE) {
-        legacy_restrictions |= legacy_hal::wifi_coex_restriction::WIFI_AWARE;
-    }
-    auto legacy_status = legacy_hal_.lock()->setCoexUnsafeChannels(
-        legacy_unsafe_channels, legacy_restrictions);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiChip::setCountryCodeInternal(const std::array<int8_t, 2>& code) {
-    auto legacy_status =
-        legacy_hal_.lock()->setCountryCode(getFirstActiveWlanIfaceName(), code);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-std::pair<WifiStatus, std::vector<WifiUsableChannel>>
-WifiChip::getUsableChannelsInternal(WifiBand band, uint32_t ifaceModeMask,
-                                    uint32_t filterMask) {
-    legacy_hal::wifi_error legacy_status;
-    std::vector<legacy_hal::wifi_usable_channel> legacy_usable_channels;
-    std::tie(legacy_status, legacy_usable_channels) =
-        legacy_hal_.lock()->getUsableChannels(
-            hidl_struct_util::convertHidlWifiBandToLegacyMacBand(band),
-            hidl_struct_util::convertHidlWifiIfaceModeToLegacy(ifaceModeMask),
-            hidl_struct_util::convertHidlUsableChannelFilterToLegacy(
-                filterMask));
-
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        return {createWifiStatusFromLegacyError(legacy_status), {}};
-    }
-    std::vector<WifiUsableChannel> hidl_usable_channels;
-    if (!hidl_struct_util::convertLegacyWifiUsableChannelsToHidl(
-            legacy_usable_channels, &hidl_usable_channels)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_usable_channels};
-}
-
-WifiStatus WifiChip::triggerSubsystemRestartInternal() {
-    auto legacy_status = legacy_hal_.lock()->triggerSubsystemRestart();
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiChip::handleChipConfiguration(
-    /* NONNULL */ std::unique_lock<std::recursive_mutex>* lock,
-    ChipModeId mode_id) {
-    // If the chip is already configured in a different mode, stop
-    // the legacy HAL and then start it after firmware mode change.
-    if (isValidModeId(current_mode_id_)) {
-        LOG(INFO) << "Reconfiguring chip from mode " << current_mode_id_
-                  << " to mode " << mode_id;
-        invalidateAndRemoveAllIfaces();
-        legacy_hal::wifi_error legacy_status =
-            legacy_hal_.lock()->stop(lock, []() {});
-        if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-            LOG(ERROR) << "Failed to stop legacy HAL: "
-                       << legacyErrorToString(legacy_status);
-            return createWifiStatusFromLegacyError(legacy_status);
-        }
-    }
-    // Firmware mode change not needed for V2 devices.
-    bool success = true;
-    if (mode_id == feature_flags::chip_mode_ids::kV1Sta) {
-        success = mode_controller_.lock()->changeFirmwareMode(IfaceType::STA);
-    } else if (mode_id == feature_flags::chip_mode_ids::kV1Ap) {
-        success = mode_controller_.lock()->changeFirmwareMode(IfaceType::AP);
-    }
-    if (!success) {
-        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-    }
-    legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->start();
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        LOG(ERROR) << "Failed to start legacy HAL: "
-                   << legacyErrorToString(legacy_status);
-        return createWifiStatusFromLegacyError(legacy_status);
-    }
-    // Every time the HAL is restarted, we need to register the
-    // radio mode change callback.
-    WifiStatus status = registerRadioModeChangeCallback();
-    if (status.code != WifiStatusCode::SUCCESS) {
-        // This probably is not a critical failure?
-        LOG(ERROR) << "Failed to register radio mode change callback";
-    }
-    // Extract and save the version information into property.
-    std::pair<WifiStatus, V1_4::IWifiChip::ChipDebugInfo> version_info;
-    version_info = WifiChip::requestChipDebugInfoInternal();
-    if (WifiStatusCode::SUCCESS == version_info.first.code) {
-        property_set("vendor.wlan.firmware.version",
-                     version_info.second.firmwareDescription.c_str());
-        property_set("vendor.wlan.driver.version",
-                     version_info.second.driverDescription.c_str());
-    }
-
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-WifiStatus WifiChip::registerDebugRingBufferCallback() {
-    if (debug_ring_buffer_cb_registered_) {
-        return createWifiStatus(WifiStatusCode::SUCCESS);
-    }
-
-    android::wp<WifiChip> weak_ptr_this(this);
-    const auto& on_ring_buffer_data_callback =
-        [weak_ptr_this](const std::string& name,
-                        const std::vector<uint8_t>& data,
-                        const legacy_hal::wifi_ring_buffer_status& status) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            WifiDebugRingBufferStatus hidl_status;
-            if (!hidl_struct_util::convertLegacyDebugRingBufferStatusToHidl(
-                    status, &hidl_status)) {
-                LOG(ERROR) << "Error converting ring buffer status";
-                return;
-            }
-            {
-                std::unique_lock<std::mutex> lk(shared_ptr_this->lock_t);
-                const auto& target =
-                    shared_ptr_this->ringbuffer_map_.find(name);
-                if (target != shared_ptr_this->ringbuffer_map_.end()) {
-                    Ringbuffer& cur_buffer = target->second;
-                    cur_buffer.append(data);
-                } else {
-                    LOG(ERROR) << "Ringname " << name << " not found";
-                    return;
-                }
-                // unique_lock unlocked here
-            }
-        };
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->registerRingBufferCallbackHandler(
-            getFirstActiveWlanIfaceName(), on_ring_buffer_data_callback);
-
-    if (legacy_status == legacy_hal::WIFI_SUCCESS) {
-        debug_ring_buffer_cb_registered_ = true;
-    }
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiChip::registerRadioModeChangeCallback() {
-    android::wp<WifiChip> weak_ptr_this(this);
-    const auto& on_radio_mode_change_callback =
-        [weak_ptr_this](const std::vector<legacy_hal::WifiMacInfo>& mac_infos) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            std::vector<V1_4::IWifiChipEventCallback::RadioModeInfo>
-                hidl_radio_mode_infos;
-            if (!hidl_struct_util::convertLegacyWifiMacInfosToHidl(
-                    mac_infos, &hidl_radio_mode_infos)) {
-                LOG(ERROR) << "Error converting wifi mac info";
-                return;
-            }
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                if (!callback->onRadioModeChange_1_4(hidl_radio_mode_infos)
-                         .isOk()) {
-                    LOG(ERROR) << "Failed to invoke onRadioModeChange_1_4"
-                               << " callback on: " << toString(callback);
-                }
-            }
-        };
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->registerRadioModeChangeCallbackHandler(
-            getFirstActiveWlanIfaceName(), on_radio_mode_change_callback);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-std::vector<V1_4::IWifiChip::ChipIfaceCombination>
-WifiChip::getCurrentModeIfaceCombinations() {
-    if (!isValidModeId(current_mode_id_)) {
-        LOG(ERROR) << "Chip not configured in a mode yet";
-        return {};
-    }
-    for (const auto& mode : modes_) {
-        if (mode.id == current_mode_id_) {
-            return mode.availableCombinations;
-        }
-    }
-    CHECK(0) << "Expected to find iface combinations for current mode!";
-    return {};
-}
-
-// Returns a map indexed by IfaceType with the number of ifaces currently
-// created of the corresponding type.
-std::map<IfaceType, size_t> WifiChip::getCurrentIfaceCombination() {
-    std::map<IfaceType, size_t> iface_counts;
-    iface_counts[IfaceType::AP] = ap_ifaces_.size();
-    iface_counts[IfaceType::NAN] = nan_ifaces_.size();
-    iface_counts[IfaceType::P2P] = p2p_ifaces_.size();
-    iface_counts[IfaceType::STA] = sta_ifaces_.size();
-    return iface_counts;
-}
-
-// This expands the provided iface combinations to a more parseable
-// form. Returns a vector of available combinations possible with the number
-// of ifaces of each type in the combination.
-// This method is a port of HalDeviceManager.expandIfaceCombos() from framework.
-std::vector<std::map<IfaceType, size_t>> WifiChip::expandIfaceCombinations(
-    const V1_4::IWifiChip::ChipIfaceCombination& combination) {
-    uint32_t num_expanded_combos = 1;
-    for (const auto& limit : combination.limits) {
-        for (uint32_t i = 0; i < limit.maxIfaces; i++) {
-            num_expanded_combos *= limit.types.size();
-        }
-    }
-
-    // Allocate the vector of expanded combos and reset all iface counts to 0
-    // in each combo.
-    std::vector<std::map<IfaceType, size_t>> expanded_combos;
-    expanded_combos.resize(num_expanded_combos);
-    for (auto& expanded_combo : expanded_combos) {
-        for (const auto type :
-             {IfaceType::AP, IfaceType::NAN, IfaceType::P2P, IfaceType::STA}) {
-            expanded_combo[type] = 0;
-        }
-    }
-    uint32_t span = num_expanded_combos;
-    for (const auto& limit : combination.limits) {
-        for (uint32_t i = 0; i < limit.maxIfaces; i++) {
-            span /= limit.types.size();
-            for (uint32_t k = 0; k < num_expanded_combos; ++k) {
-                const auto iface_type =
-                    limit.types[(k / span) % limit.types.size()];
-                expanded_combos[k][iface_type]++;
-            }
-        }
-    }
-    return expanded_combos;
-}
-
-bool WifiChip::canExpandedIfaceComboSupportIfaceOfTypeWithCurrentIfaces(
-    const std::map<IfaceType, size_t>& expanded_combo,
-    IfaceType requested_type) {
-    const auto current_combo = getCurrentIfaceCombination();
-
-    // Check if we have space for 1 more iface of |type| in this combo
-    for (const auto type :
-         {IfaceType::AP, IfaceType::NAN, IfaceType::P2P, IfaceType::STA}) {
-        size_t num_ifaces_needed = current_combo.at(type);
-        if (type == requested_type) {
-            num_ifaces_needed++;
-        }
-        size_t num_ifaces_allowed = expanded_combo.at(type);
-        if (num_ifaces_needed > num_ifaces_allowed) {
-            return false;
-        }
-    }
-    return true;
-}
-
-// This method does the following:
-// a) Enumerate all possible iface combos by expanding the current
-//    ChipIfaceCombination.
-// b) Check if the requested iface type can be added to the current mode
-//    with the iface combination that is already active.
-bool WifiChip::canCurrentModeSupportIfaceOfTypeWithCurrentIfaces(
-    IfaceType requested_type) {
-    if (!isValidModeId(current_mode_id_)) {
-        LOG(ERROR) << "Chip not configured in a mode yet";
-        return false;
-    }
-    const auto combinations = getCurrentModeIfaceCombinations();
-    for (const auto& combination : combinations) {
-        const auto expanded_combos = expandIfaceCombinations(combination);
-        for (const auto& expanded_combo : expanded_combos) {
-            if (canExpandedIfaceComboSupportIfaceOfTypeWithCurrentIfaces(
-                    expanded_combo, requested_type)) {
-                return true;
-            }
-        }
-    }
-    return false;
-}
-
-// Note: This does not consider ifaces already active. It only checks if the
-// provided expanded iface combination can support the requested combo.
-bool WifiChip::canExpandedIfaceComboSupportIfaceCombo(
-    const std::map<IfaceType, size_t>& expanded_combo,
-    const std::map<IfaceType, size_t>& req_combo) {
-    // Check if we have space for 1 more iface of |type| in this combo
-    for (const auto type :
-         {IfaceType::AP, IfaceType::NAN, IfaceType::P2P, IfaceType::STA}) {
-        if (req_combo.count(type) == 0) {
-            // Iface of "type" not in the req_combo.
-            continue;
-        }
-        size_t num_ifaces_needed = req_combo.at(type);
-        size_t num_ifaces_allowed = expanded_combo.at(type);
-        if (num_ifaces_needed > num_ifaces_allowed) {
-            return false;
-        }
-    }
-    return true;
-}
-// This method does the following:
-// a) Enumerate all possible iface combos by expanding the current
-//    ChipIfaceCombination.
-// b) Check if the requested iface combo can be added to the current mode.
-// Note: This does not consider ifaces already active. It only checks if the
-// current mode can support the requested combo.
-bool WifiChip::canCurrentModeSupportIfaceCombo(
-    const std::map<IfaceType, size_t>& req_combo) {
-    if (!isValidModeId(current_mode_id_)) {
-        LOG(ERROR) << "Chip not configured in a mode yet";
-        return false;
-    }
-    const auto combinations = getCurrentModeIfaceCombinations();
-    for (const auto& combination : combinations) {
-        const auto expanded_combos = expandIfaceCombinations(combination);
-        for (const auto& expanded_combo : expanded_combos) {
-            if (canExpandedIfaceComboSupportIfaceCombo(expanded_combo,
-                                                       req_combo)) {
-                return true;
-            }
-        }
-    }
-    return false;
-}
-
-// This method does the following:
-// a) Enumerate all possible iface combos by expanding the current
-//    ChipIfaceCombination.
-// b) Check if the requested iface type can be added to the current mode.
-bool WifiChip::canCurrentModeSupportIfaceOfType(IfaceType requested_type) {
-    // Check if we can support at least 1 iface of type.
-    std::map<IfaceType, size_t> req_iface_combo;
-    req_iface_combo[requested_type] = 1;
-    return canCurrentModeSupportIfaceCombo(req_iface_combo);
-}
-
-bool WifiChip::isValidModeId(ChipModeId mode_id) {
-    for (const auto& mode : modes_) {
-        if (mode.id == mode_id) {
-            return true;
-        }
-    }
-    return false;
-}
-
-bool WifiChip::isStaApConcurrencyAllowedInCurrentMode() {
-    // Check if we can support at least 1 STA & 1 AP concurrently.
-    std::map<IfaceType, size_t> req_iface_combo;
-    req_iface_combo[IfaceType::AP] = 1;
-    req_iface_combo[IfaceType::STA] = 1;
-    return canCurrentModeSupportIfaceCombo(req_iface_combo);
-}
-
-bool WifiChip::isDualStaConcurrencyAllowedInCurrentMode() {
-    // Check if we can support at least 2 STA concurrently.
-    std::map<IfaceType, size_t> req_iface_combo;
-    req_iface_combo[IfaceType::STA] = 2;
-    return canCurrentModeSupportIfaceCombo(req_iface_combo);
-}
-
-std::string WifiChip::getFirstActiveWlanIfaceName() {
-    if (sta_ifaces_.size() > 0) return sta_ifaces_[0]->getName();
-    if (ap_ifaces_.size() > 0) {
-        // If the first active wlan iface is bridged iface.
-        // Return first instance name.
-        for (auto const& it : br_ifaces_ap_instances_) {
-            if (it.first == ap_ifaces_[0]->getName()) {
-                return it.second[0];
-            }
-        }
-        return ap_ifaces_[0]->getName();
-    }
-    // This could happen if the chip call is made before any STA/AP
-    // iface is created. Default to wlan0 for such cases.
-    LOG(WARNING) << "No active wlan interfaces in use! Using default";
-    return getWlanIfaceNameWithType(IfaceType::STA, 0);
-}
-
-// Return the first wlan (wlan0, wlan1 etc.) starting from |start_idx|
-// not already in use.
-// Note: This doesn't check the actual presence of these interfaces.
-std::string WifiChip::allocateApOrStaIfaceName(IfaceType type,
-                                               uint32_t start_idx) {
-    for (unsigned idx = start_idx; idx < kMaxWlanIfaces; idx++) {
-        const auto ifname = getWlanIfaceNameWithType(type, idx);
-        if (findUsingNameFromBridgedApInstances(ifname)) continue;
-        if (findUsingName(ap_ifaces_, ifname)) continue;
-        if (findUsingName(sta_ifaces_, ifname)) continue;
-        return ifname;
-    }
-    // This should never happen. We screwed up somewhere if it did.
-    CHECK(false) << "All wlan interfaces in use already!";
-    return {};
-}
-
-uint32_t WifiChip::startIdxOfApIface() {
-    if (isDualStaConcurrencyAllowedInCurrentMode()) {
-        // When the HAL support dual STAs, AP should start with idx 2.
-        return 2;
-    } else if (isStaApConcurrencyAllowedInCurrentMode()) {
-        //  When the HAL support STA + AP but it doesn't support dual STAs.
-        //  AP should start with idx 1.
-        return 1;
-    }
-    // No concurrency support.
-    return 0;
-}
-
-// AP iface names start with idx 1 for modes supporting
-// concurrent STA and not dual AP, else start with idx 0.
-std::string WifiChip::allocateApIfaceName() {
-    // Check if we have a dedicated iface for AP.
-    std::vector<std::string> ifnames = getPredefinedApIfaceNames(false);
-    if (!ifnames.empty()) {
-        return ifnames[0];
-    }
-    return allocateApOrStaIfaceName(IfaceType::AP, startIdxOfApIface());
-}
-
-std::vector<std::string> WifiChip::allocateBridgedApInstanceNames() {
-    // Check if we have a dedicated iface for AP.
-    std::vector<std::string> instances = getPredefinedApIfaceNames(true);
-    if (instances.size() == 2) {
-        return instances;
-    } else {
-        int num_ifaces_need_to_allocate = 2 - instances.size();
-        for (int i = 0; i < num_ifaces_need_to_allocate; i++) {
-            std::string instance_name = allocateApOrStaIfaceName(
-                IfaceType::AP, startIdxOfApIface() + i);
-            if (!instance_name.empty()) {
-                instances.push_back(instance_name);
-            }
-        }
-    }
-    return instances;
-}
-
-// STA iface names start with idx 0.
-// Primary STA iface will always be 0.
-std::string WifiChip::allocateStaIfaceName() {
-    return allocateApOrStaIfaceName(IfaceType::STA, 0);
-}
-
-bool WifiChip::writeRingbufferFilesInternal() {
-    if (!removeOldFilesInternal()) {
-        LOG(ERROR) << "Error occurred while deleting old tombstone files";
-        return false;
-    }
-    // write ringbuffers to file
-    {
-        std::unique_lock<std::mutex> lk(lock_t);
-        for (auto& item : ringbuffer_map_) {
-            Ringbuffer& cur_buffer = item.second;
-            if (cur_buffer.getData().empty()) {
-                continue;
-            }
-            const std::string file_path_raw =
-                kTombstoneFolderPath + item.first + "XXXXXXXXXX";
-            const int dump_fd = mkstemp(makeCharVec(file_path_raw).data());
-            if (dump_fd == -1) {
-                PLOG(ERROR) << "create file failed";
-                return false;
-            }
-            unique_fd file_auto_closer(dump_fd);
-            for (const auto& cur_block : cur_buffer.getData()) {
-                if (write(dump_fd, cur_block.data(),
-                          sizeof(cur_block[0]) * cur_block.size()) == -1) {
-                    PLOG(ERROR) << "Error writing to file";
-                }
-            }
-            cur_buffer.clear();
-        }
-        // unique_lock unlocked here
-    }
-    return true;
-}
-
-std::string WifiChip::getWlanIfaceNameWithType(IfaceType type, unsigned idx) {
-    std::string ifname;
-
-    // let the legacy hal override the interface name
-    legacy_hal::wifi_error err =
-        legacy_hal_.lock()->getSupportedIfaceName((uint32_t)type, ifname);
-    if (err == legacy_hal::WIFI_SUCCESS) return ifname;
-
-    return getWlanIfaceName(idx);
-}
-
-void WifiChip::invalidateAndClearBridgedApAll() {
-    for (auto const& it : br_ifaces_ap_instances_) {
-        for (auto const& iface : it.second) {
-            iface_util_->removeIfaceFromBridge(it.first, iface);
-            legacy_hal_.lock()->deleteVirtualInterface(iface);
-        }
-        iface_util_->deleteBridge(it.first);
-    }
-    br_ifaces_ap_instances_.clear();
-}
-
-void WifiChip::invalidateAndClearBridgedAp(const std::string& br_name) {
-    if (br_name.empty()) return;
-    // delete managed interfaces
-    for (auto const& it : br_ifaces_ap_instances_) {
-        if (it.first == br_name) {
-            for (auto const& iface : it.second) {
-                iface_util_->removeIfaceFromBridge(br_name, iface);
-                legacy_hal_.lock()->deleteVirtualInterface(iface);
-            }
-            iface_util_->deleteBridge(br_name);
-            br_ifaces_ap_instances_.erase(br_name);
-            break;
-        }
-    }
-    return;
-}
-
-bool WifiChip::findUsingNameFromBridgedApInstances(const std::string& name) {
-    for (auto const& it : br_ifaces_ap_instances_) {
-        if (it.first == name) {
-            return true;
-        }
-        for (auto const& iface : it.second) {
-            if (iface == name) {
-                return true;
-            }
-        }
-    }
-    return false;
-}
-
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.5/default/wifi_chip.h b/wifi/1.5/default/wifi_chip.h
deleted file mode 100644
index bd40ead..0000000
--- a/wifi/1.5/default/wifi_chip.h
+++ /dev/null
@@ -1,343 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef WIFI_CHIP_H_
-#define WIFI_CHIP_H_
-
-#include <list>
-#include <map>
-#include <mutex>
-
-#include <android-base/macros.h>
-#include <android/hardware/wifi/1.4/IWifiRttController.h>
-#include <android/hardware/wifi/1.5/IWifiChip.h>
-
-#include "hidl_callback_util.h"
-#include "ringbuffer.h"
-#include "wifi_ap_iface.h"
-#include "wifi_feature_flags.h"
-#include "wifi_legacy_hal.h"
-#include "wifi_mode_controller.h"
-#include "wifi_nan_iface.h"
-#include "wifi_p2p_iface.h"
-#include "wifi_rtt_controller.h"
-#include "wifi_sta_iface.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-using namespace android::hardware::wifi::V1_0;
-
-/**
- * HIDL interface object used to control a Wifi HAL chip instance.
- * Since there is only a single chip instance used today, there is no
- * identifying handle information stored here.
- */
-class WifiChip : public V1_5::IWifiChip {
-   public:
-    WifiChip(ChipId chip_id, bool is_primary,
-             const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
-             const std::weak_ptr<mode_controller::WifiModeController>
-                 mode_controller,
-             const std::shared_ptr<iface_util::WifiIfaceUtil> iface_util,
-             const std::weak_ptr<feature_flags::WifiFeatureFlags> feature_flags,
-             const std::function<void(const std::string&)>&
-                 subsystemCallbackHandler);
-    // HIDL does not provide a built-in mechanism to let the server invalidate
-    // a HIDL interface object after creation. If any client process holds onto
-    // a reference to the object in their context, any method calls on that
-    // reference will continue to be directed to the server.
-    //
-    // However Wifi HAL needs to control the lifetime of these objects. So, add
-    // a public |invalidate| method to |WifiChip| and it's child objects. This
-    // will be used to mark an object invalid when either:
-    // a) Wifi HAL is stopped, or
-    // b) Wifi Chip is reconfigured.
-    //
-    // All HIDL method implementations should check if the object is still
-    // marked valid before processing them.
-    void invalidate();
-    bool isValid();
-    std::set<sp<V1_4::IWifiChipEventCallback>> getEventCallbacks();
-
-    // HIDL methods exposed.
-    Return<void> getId(getId_cb hidl_status_cb) override;
-    // Deprecated support for this callback
-    Return<void> registerEventCallback(
-        const sp<V1_0::IWifiChipEventCallback>& event_callback,
-        registerEventCallback_cb hidl_status_cb) override;
-    Return<void> getCapabilities(getCapabilities_cb hidl_status_cb) override;
-    Return<void> getAvailableModes(
-        getAvailableModes_cb hidl_status_cb) override;
-    Return<void> configureChip(ChipModeId mode_id,
-                               configureChip_cb hidl_status_cb) override;
-    Return<void> getMode(getMode_cb hidl_status_cb) override;
-    Return<void> requestChipDebugInfo(
-        requestChipDebugInfo_cb hidl_status_cb) override;
-    Return<void> requestDriverDebugDump(
-        requestDriverDebugDump_cb hidl_status_cb) override;
-    Return<void> requestFirmwareDebugDump(
-        requestFirmwareDebugDump_cb hidl_status_cb) override;
-    Return<void> createApIface(createApIface_cb hidl_status_cb) override;
-    Return<void> createBridgedApIface(
-        createBridgedApIface_cb hidl_status_cb) override;
-    Return<void> getApIfaceNames(getApIfaceNames_cb hidl_status_cb) override;
-    Return<void> getApIface(const hidl_string& ifname,
-                            getApIface_cb hidl_status_cb) override;
-    Return<void> removeApIface(const hidl_string& ifname,
-                               removeApIface_cb hidl_status_cb) override;
-    Return<void> removeIfaceInstanceFromBridgedApIface(
-        const hidl_string& brIfaceName, const hidl_string& ifaceInstanceName,
-        removeIfaceInstanceFromBridgedApIface_cb hidl_status_cb) override;
-    Return<void> createNanIface(createNanIface_cb hidl_status_cb) override;
-    Return<void> getNanIfaceNames(getNanIfaceNames_cb hidl_status_cb) override;
-    Return<void> getNanIface(const hidl_string& ifname,
-                             getNanIface_cb hidl_status_cb) override;
-    Return<void> removeNanIface(const hidl_string& ifname,
-                                removeNanIface_cb hidl_status_cb) override;
-    Return<void> createP2pIface(createP2pIface_cb hidl_status_cb) override;
-    Return<void> getP2pIfaceNames(getP2pIfaceNames_cb hidl_status_cb) override;
-    Return<void> getP2pIface(const hidl_string& ifname,
-                             getP2pIface_cb hidl_status_cb) override;
-    Return<void> removeP2pIface(const hidl_string& ifname,
-                                removeP2pIface_cb hidl_status_cb) override;
-    Return<void> createStaIface(createStaIface_cb hidl_status_cb) override;
-    Return<void> getStaIfaceNames(getStaIfaceNames_cb hidl_status_cb) override;
-    Return<void> getStaIface(const hidl_string& ifname,
-                             getStaIface_cb hidl_status_cb) override;
-    Return<void> removeStaIface(const hidl_string& ifname,
-                                removeStaIface_cb hidl_status_cb) override;
-    Return<void> createRttController(
-        const sp<IWifiIface>& bound_iface,
-        createRttController_cb hidl_status_cb) override;
-    Return<void> getDebugRingBuffersStatus(
-        getDebugRingBuffersStatus_cb hidl_status_cb) override;
-    Return<void> startLoggingToDebugRingBuffer(
-        const hidl_string& ring_name,
-        WifiDebugRingBufferVerboseLevel verbose_level,
-        uint32_t max_interval_in_sec, uint32_t min_data_size_in_bytes,
-        startLoggingToDebugRingBuffer_cb hidl_status_cb) override;
-    Return<void> forceDumpToDebugRingBuffer(
-        const hidl_string& ring_name,
-        forceDumpToDebugRingBuffer_cb hidl_status_cb) override;
-    Return<void> flushRingBufferToFile(
-        flushRingBufferToFile_cb hidl_status_cb) override;
-    Return<void> stopLoggingToDebugRingBuffer(
-        stopLoggingToDebugRingBuffer_cb hidl_status_cb) override;
-    Return<void> getDebugHostWakeReasonStats(
-        getDebugHostWakeReasonStats_cb hidl_status_cb) override;
-    Return<void> enableDebugErrorAlerts(
-        bool enable, enableDebugErrorAlerts_cb hidl_status_cb) override;
-    Return<void> selectTxPowerScenario(
-        V1_1::IWifiChip::TxPowerScenario scenario,
-        selectTxPowerScenario_cb hidl_status_cb) override;
-    Return<void> resetTxPowerScenario(
-        resetTxPowerScenario_cb hidl_status_cb) override;
-    Return<void> setLatencyMode(LatencyMode mode,
-                                setLatencyMode_cb hidl_status_cb) override;
-    Return<void> registerEventCallback_1_2(
-        const sp<V1_2::IWifiChipEventCallback>& event_callback,
-        registerEventCallback_1_2_cb hidl_status_cb) override;
-    Return<void> selectTxPowerScenario_1_2(
-        TxPowerScenario scenario,
-        selectTxPowerScenario_cb hidl_status_cb) override;
-    Return<void> getCapabilities_1_3(
-        getCapabilities_cb hidl_status_cb) override;
-    Return<void> getCapabilities_1_5(
-        getCapabilities_1_5_cb hidl_status_cb) override;
-    Return<void> debug(const hidl_handle& handle,
-                       const hidl_vec<hidl_string>& options) override;
-    Return<void> createRttController_1_4(
-        const sp<IWifiIface>& bound_iface,
-        createRttController_1_4_cb hidl_status_cb) override;
-    Return<void> registerEventCallback_1_4(
-        const sp<V1_4::IWifiChipEventCallback>& event_callback,
-        registerEventCallback_1_4_cb hidl_status_cb) override;
-    Return<void> setMultiStaPrimaryConnection(
-        const hidl_string& ifname,
-        setMultiStaPrimaryConnection_cb hidl_status_cb) override;
-    Return<void> setMultiStaUseCase(
-        MultiStaUseCase use_case,
-        setMultiStaUseCase_cb hidl_status_cb) override;
-    Return<void> setCoexUnsafeChannels(
-        const hidl_vec<CoexUnsafeChannel>& unsafe_channels,
-        hidl_bitfield<IfaceType> restrictions,
-        setCoexUnsafeChannels_cb hidl_status_cb) override;
-    Return<void> setCountryCode(const hidl_array<int8_t, 2>& code,
-                                setCountryCode_cb _hidl_cb) override;
-    Return<void> getUsableChannels(
-        WifiBand band, hidl_bitfield<WifiIfaceMode> ifaceModeMask,
-        hidl_bitfield<UsableChannelFilter> filterMask,
-        getUsableChannels_cb _hidl_cb) override;
-    Return<void> triggerSubsystemRestart(
-        triggerSubsystemRestart_cb hidl_status_cb) override;
-
-   private:
-    void invalidateAndRemoveAllIfaces();
-    // When a STA iface is removed any dependent NAN-ifaces/RTT-controllers are
-    // invalidated & removed.
-    void invalidateAndRemoveDependencies(const std::string& removed_iface_name);
-
-    // Corresponding worker functions for the HIDL methods.
-    std::pair<WifiStatus, ChipId> getIdInternal();
-    // Deprecated support for this callback
-    WifiStatus registerEventCallbackInternal(
-        const sp<V1_0::IWifiChipEventCallback>& event_callback);
-    std::pair<WifiStatus, uint32_t> getCapabilitiesInternal();
-    std::pair<WifiStatus, std::vector<ChipMode>> getAvailableModesInternal();
-    WifiStatus configureChipInternal(
-        std::unique_lock<std::recursive_mutex>* lock, ChipModeId mode_id);
-    std::pair<WifiStatus, uint32_t> getModeInternal();
-    std::pair<WifiStatus, IWifiChip::ChipDebugInfo>
-    requestChipDebugInfoInternal();
-    std::pair<WifiStatus, std::vector<uint8_t>>
-    requestDriverDebugDumpInternal();
-    std::pair<WifiStatus, std::vector<uint8_t>>
-    requestFirmwareDebugDumpInternal();
-    sp<WifiApIface> newWifiApIface(std::string& ifname);
-    WifiStatus createVirtualApInterface(const std::string& apVirtIf);
-    std::pair<WifiStatus, sp<V1_5::IWifiApIface>> createApIfaceInternal();
-    std::pair<WifiStatus, sp<V1_5::IWifiApIface>>
-    createBridgedApIfaceInternal();
-    std::pair<WifiStatus, std::vector<hidl_string>> getApIfaceNamesInternal();
-    std::pair<WifiStatus, sp<V1_5::IWifiApIface>> getApIfaceInternal(
-        const std::string& ifname);
-    WifiStatus removeApIfaceInternal(const std::string& ifname);
-    WifiStatus removeIfaceInstanceFromBridgedApIfaceInternal(
-        const std::string& brIfaceName, const std::string& ifInstanceName);
-    std::pair<WifiStatus, sp<V1_4::IWifiNanIface>> createNanIfaceInternal();
-    std::pair<WifiStatus, std::vector<hidl_string>> getNanIfaceNamesInternal();
-    std::pair<WifiStatus, sp<V1_4::IWifiNanIface>> getNanIfaceInternal(
-        const std::string& ifname);
-    WifiStatus removeNanIfaceInternal(const std::string& ifname);
-    std::pair<WifiStatus, sp<IWifiP2pIface>> createP2pIfaceInternal();
-    std::pair<WifiStatus, std::vector<hidl_string>> getP2pIfaceNamesInternal();
-    std::pair<WifiStatus, sp<IWifiP2pIface>> getP2pIfaceInternal(
-        const std::string& ifname);
-    WifiStatus removeP2pIfaceInternal(const std::string& ifname);
-    std::pair<WifiStatus, sp<V1_5::IWifiStaIface>> createStaIfaceInternal();
-    std::pair<WifiStatus, std::vector<hidl_string>> getStaIfaceNamesInternal();
-    std::pair<WifiStatus, sp<V1_5::IWifiStaIface>> getStaIfaceInternal(
-        const std::string& ifname);
-    WifiStatus removeStaIfaceInternal(const std::string& ifname);
-    std::pair<WifiStatus, sp<V1_0::IWifiRttController>>
-    createRttControllerInternal(const sp<IWifiIface>& bound_iface);
-    std::pair<WifiStatus, std::vector<WifiDebugRingBufferStatus>>
-    getDebugRingBuffersStatusInternal();
-    WifiStatus startLoggingToDebugRingBufferInternal(
-        const hidl_string& ring_name,
-        WifiDebugRingBufferVerboseLevel verbose_level,
-        uint32_t max_interval_in_sec, uint32_t min_data_size_in_bytes);
-    WifiStatus forceDumpToDebugRingBufferInternal(const hidl_string& ring_name);
-    WifiStatus flushRingBufferToFileInternal();
-    WifiStatus stopLoggingToDebugRingBufferInternal();
-    std::pair<WifiStatus, WifiDebugHostWakeReasonStats>
-    getDebugHostWakeReasonStatsInternal();
-    WifiStatus enableDebugErrorAlertsInternal(bool enable);
-    WifiStatus selectTxPowerScenarioInternal(
-        V1_1::IWifiChip::TxPowerScenario scenario);
-    WifiStatus resetTxPowerScenarioInternal();
-    WifiStatus setLatencyModeInternal(LatencyMode mode);
-    WifiStatus registerEventCallbackInternal_1_2(
-        const sp<V1_2::IWifiChipEventCallback>& event_callback);
-    WifiStatus selectTxPowerScenarioInternal_1_2(TxPowerScenario scenario);
-    std::pair<WifiStatus, uint32_t> getCapabilitiesInternal_1_3();
-    std::pair<WifiStatus, uint32_t> getCapabilitiesInternal_1_5();
-    std::pair<WifiStatus, sp<V1_4::IWifiRttController>>
-    createRttControllerInternal_1_4(const sp<IWifiIface>& bound_iface);
-    WifiStatus registerEventCallbackInternal_1_4(
-        const sp<V1_4::IWifiChipEventCallback>& event_callback);
-    WifiStatus setMultiStaPrimaryConnectionInternal(const std::string& ifname);
-    WifiStatus setMultiStaUseCaseInternal(MultiStaUseCase use_case);
-    WifiStatus setCoexUnsafeChannelsInternal(
-        std::vector<CoexUnsafeChannel> unsafe_channels, uint32_t restrictions);
-    WifiStatus setCountryCodeInternal(const std::array<int8_t, 2>& code);
-    std::pair<WifiStatus, std::vector<WifiUsableChannel>>
-    getUsableChannelsInternal(WifiBand band, uint32_t ifaceModeMask,
-                              uint32_t filterMask);
-    WifiStatus handleChipConfiguration(
-        std::unique_lock<std::recursive_mutex>* lock, ChipModeId mode_id);
-    WifiStatus registerDebugRingBufferCallback();
-    WifiStatus registerRadioModeChangeCallback();
-
-    std::vector<V1_4::IWifiChip::ChipIfaceCombination>
-    getCurrentModeIfaceCombinations();
-    std::map<IfaceType, size_t> getCurrentIfaceCombination();
-    std::vector<std::map<IfaceType, size_t>> expandIfaceCombinations(
-        const V1_4::IWifiChip::ChipIfaceCombination& combination);
-    bool canExpandedIfaceComboSupportIfaceOfTypeWithCurrentIfaces(
-        const std::map<IfaceType, size_t>& expanded_combo,
-        IfaceType requested_type);
-    bool canCurrentModeSupportIfaceOfTypeWithCurrentIfaces(
-        IfaceType requested_type);
-    bool canExpandedIfaceComboSupportIfaceCombo(
-        const std::map<IfaceType, size_t>& expanded_combo,
-        const std::map<IfaceType, size_t>& req_combo);
-    bool canCurrentModeSupportIfaceCombo(
-        const std::map<IfaceType, size_t>& req_combo);
-    bool canCurrentModeSupportIfaceOfType(IfaceType requested_type);
-    bool isValidModeId(ChipModeId mode_id);
-    bool isStaApConcurrencyAllowedInCurrentMode();
-    bool isDualStaConcurrencyAllowedInCurrentMode();
-    uint32_t startIdxOfApIface();
-    std::string getFirstActiveWlanIfaceName();
-    std::string allocateApOrStaIfaceName(IfaceType type, uint32_t start_idx);
-    std::string allocateApIfaceName();
-    std::vector<std::string> allocateBridgedApInstanceNames();
-    std::string allocateStaIfaceName();
-    bool writeRingbufferFilesInternal();
-    std::string getWlanIfaceNameWithType(IfaceType type, unsigned idx);
-    void invalidateAndClearBridgedApAll();
-    void invalidateAndClearBridgedAp(const std::string& br_name);
-    bool findUsingNameFromBridgedApInstances(const std::string& name);
-    WifiStatus triggerSubsystemRestartInternal();
-
-    ChipId chip_id_;
-    std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
-    std::weak_ptr<mode_controller::WifiModeController> mode_controller_;
-    std::shared_ptr<iface_util::WifiIfaceUtil> iface_util_;
-    std::vector<sp<WifiApIface>> ap_ifaces_;
-    std::vector<sp<WifiNanIface>> nan_ifaces_;
-    std::vector<sp<WifiP2pIface>> p2p_ifaces_;
-    std::vector<sp<WifiStaIface>> sta_ifaces_;
-    std::vector<sp<WifiRttController>> rtt_controllers_;
-    std::map<std::string, Ringbuffer> ringbuffer_map_;
-    bool is_valid_;
-    // Members pertaining to chip configuration.
-    uint32_t current_mode_id_;
-    std::mutex lock_t;
-    std::vector<V1_4::IWifiChip::ChipMode> modes_;
-    // The legacy ring buffer callback API has only a global callback
-    // registration mechanism. Use this to check if we have already
-    // registered a callback.
-    bool debug_ring_buffer_cb_registered_;
-    hidl_callback_util::HidlCallbackHandler<V1_4::IWifiChipEventCallback>
-        event_cb_handler_;
-
-    const std::function<void(const std::string&)> subsystemCallbackHandler_;
-    std::map<std::string, std::vector<std::string>> br_ifaces_ap_instances_;
-    DISALLOW_COPY_AND_ASSIGN(WifiChip);
-};
-
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // WIFI_CHIP_H_
diff --git a/wifi/1.5/default/wifi_feature_flags.cpp b/wifi/1.5/default/wifi_feature_flags.cpp
deleted file mode 100644
index 124ba32..0000000
--- a/wifi/1.5/default/wifi_feature_flags.cpp
+++ /dev/null
@@ -1,245 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <string>
-
-#include <android-base/logging.h>
-#include <cutils/properties.h>
-
-#include "wifi_feature_flags.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-namespace feature_flags {
-
-using V1_0::ChipModeId;
-using V1_0::IfaceType;
-using V1_0::IWifiChip;
-
-/* The chip may either have a single mode supporting any number of combinations,
- * or a fixed dual-mode (so it involves firmware loading to switch between
- * modes) setting. If there is a need to support more modes, it needs to be
- * implemented manually in WiFi HAL (see changeFirmwareMode in
- * WifiChip::handleChipConfiguration).
- *
- * Supported combinations are defined in device's makefile, for example:
- *    WIFI_HAL_INTERFACE_COMBINATIONS := {{{STA, AP}, 1}, {{P2P, NAN}, 1}},
- *    WIFI_HAL_INTERFACE_COMBINATIONS += {{{STA}, 1}, {{AP}, 2}}
- * What means:
- *    Interface combination 1: 1 STA or AP and 1 P2P or NAN concurrent iface
- *                             operations.
- *    Interface combination 2: 1 STA and 2 AP concurrent iface operations.
- *
- * For backward compatibility, the following makefile flags can be used to
- * generate combinations list:
- *  - WIFI_HIDL_FEATURE_DUAL_INTERFACE
- *  - WIFI_HIDL_FEATURE_DISABLE_AP
- *  - WIFI_HIDL_FEATURE_AWARE
- * However, they are ignored if WIFI_HAL_INTERFACE_COMBINATIONS was provided.
- * With WIFI_HIDL_FEATURE_DUAL_INTERFACE flag set, there is a single mode with
- * two interface combinations:
- *    Interface Combination 1: Will support 1 STA and 1 P2P or NAN (optional)
- *                             concurrent iface operations.
- *    Interface Combination 2: Will support 1 STA and 1 AP concurrent
- *                             iface operations.
- *
- * The only dual-mode configuration supported is for alternating STA and AP
- * mode, that may involve firmware reloading. In such case, there are 2 separate
- * modes of operation with 1 interface combination each:
- *    Mode 1 (STA mode): Will support 1 STA and 1 P2P or NAN (optional)
- *                       concurrent iface operations.
- *    Mode 2 (AP mode): Will support 1 AP iface operation.
- *
- * If Aware is enabled, the iface combination will be modified to support either
- * P2P or NAN in place of just P2P.
- */
-// clang-format off
-#ifdef WIFI_HAL_INTERFACE_COMBINATIONS
-constexpr ChipModeId kMainModeId = chip_mode_ids::kV3;
-#elif defined(WIFI_HIDL_FEATURE_DUAL_INTERFACE)
-// former V2 (fixed dual interface) setup expressed as V3
-constexpr ChipModeId kMainModeId = chip_mode_ids::kV3;
-#  ifdef WIFI_HIDL_FEATURE_DISABLE_AP
-#    ifdef WIFI_HIDL_FEATURE_AWARE
-//     1 STA + 1 of (P2P or NAN)
-#      define WIFI_HAL_INTERFACE_COMBINATIONS {{{STA}, 1}, {{P2P, NAN}, 1}}
-#    else
-//     1 STA + 1 P2P
-#      define WIFI_HAL_INTERFACE_COMBINATIONS {{{STA}, 1}, {{P2P}, 1}}
-#    endif
-#  else
-#    ifdef WIFI_HIDL_FEATURE_AWARE
-//     (1 STA + 1 AP) or (1 STA + 1 of (P2P or NAN))
-#      define WIFI_HAL_INTERFACE_COMBINATIONS {{{STA}, 1}, {{AP}, 1}},\
-                                              {{{STA}, 1}, {{P2P, NAN}, 1}}
-#    else
-//     (1 STA + 1 AP) or (1 STA + 1 P2P)
-#      define WIFI_HAL_INTERFACE_COMBINATIONS {{{STA}, 1}, {{AP}, 1}},\
-                                              {{{STA}, 1}, {{P2P}, 1}}
-#    endif
-#  endif
-#else
-// V1 (fixed single interface, dual-mode chip)
-constexpr ChipModeId kMainModeId = chip_mode_ids::kV1Sta;
-#  ifdef WIFI_HIDL_FEATURE_AWARE
-//   1 STA + 1 of (P2P or NAN)
-#    define WIFI_HAL_INTERFACE_COMBINATIONS {{{STA}, 1}, {{P2P, NAN}, 1}}
-#  else
-//   1 STA + 1 P2P
-#    define WIFI_HAL_INTERFACE_COMBINATIONS {{{STA}, 1}, {{P2P}, 1}}
-#  endif
-
-#  ifndef WIFI_HIDL_FEATURE_DISABLE_AP
-#    define WIFI_HAL_INTERFACE_COMBINATIONS_AP {{{AP}, 1}}
-#  endif
-#endif
-// clang-format on
-
-/**
- * Helper class to convert a collection of combination limits to a combination.
- *
- * The main point here is to simplify the syntax required by
- * WIFI_HAL_INTERFACE_COMBINATIONS.
- */
-struct ChipIfaceCombination
-    : public hidl_vec<IWifiChip::ChipIfaceCombinationLimit> {
-    ChipIfaceCombination(
-        const std::initializer_list<IWifiChip::ChipIfaceCombinationLimit> list)
-        : hidl_vec(list) {}
-
-    operator IWifiChip::ChipIfaceCombination() const { return {*this}; }
-
-    static hidl_vec<IWifiChip::ChipIfaceCombination> make_vec(
-        const std::initializer_list<ChipIfaceCombination> list) {
-        return hidl_vec<IWifiChip::ChipIfaceCombination>(  //
-            std::begin(list), std::end(list));
-    }
-};
-
-#define STA IfaceType::STA
-#define AP IfaceType::AP
-#define P2P IfaceType::P2P
-#define NAN IfaceType::NAN
-static const std::vector<IWifiChip::ChipMode> kChipModesPrimary{
-    {kMainModeId,
-     ChipIfaceCombination::make_vec({WIFI_HAL_INTERFACE_COMBINATIONS})},
-#ifdef WIFI_HAL_INTERFACE_COMBINATIONS_AP
-    {chip_mode_ids::kV1Ap,
-     ChipIfaceCombination::make_vec({WIFI_HAL_INTERFACE_COMBINATIONS_AP})},
-#endif
-};
-
-static const std::vector<IWifiChip::ChipMode> kChipModesSecondary{
-#ifdef WIFI_HAL_INTERFACE_COMBINATIONS_SECONDARY_CHIP
-    {chip_mode_ids::kV3, ChipIfaceCombination::make_vec(
-                             {WIFI_HAL_INTERFACE_COMBINATIONS_SECONDARY_CHIP})},
-#endif
-};
-
-constexpr char kDebugPresetInterfaceCombinationIdxProperty[] =
-    "persist.vendor.debug.wifi.hal.preset_interface_combination_idx";
-// List of pre-defined interface combinations that can be enabled at runtime via
-// setting the property: "kDebugPresetInterfaceCombinationIdxProperty" to the
-// corresponding index value.
-static const std::vector<
-    std::pair<std::string, std::vector<IWifiChip::ChipMode>>>
-    kDebugChipModes{
-        // Legacy combination - No STA/AP concurrencies.
-        // 0 - (1 AP) or (1 STA + 1 of (P2P or NAN))
-        {"No STA/AP Concurrency",
-         {{kMainModeId,
-           ChipIfaceCombination::make_vec(
-               {{{{AP}, 1}}, {{{STA}, 1}, {{P2P, NAN}, 1}}})}}},
-
-        // STA + AP concurrency
-        // 1 - (1 STA + 1 AP) or (1 STA + 1 of (P2P or NAN))
-        {"STA + AP Concurrency",
-         {{kMainModeId,
-           ChipIfaceCombination::make_vec(
-               {{{{STA}, 1}, {{AP}, 1}}, {{{STA}, 1}, {{P2P, NAN}, 1}}})}}},
-
-        // STA + STA concurrency
-        // 2 - (1 STA + 1 AP) or (2 STA + 1 of (P2P or NAN))
-        {"Dual STA Concurrency",
-         {{kMainModeId,
-           ChipIfaceCombination::make_vec(
-               {{{{STA}, 1}, {{AP}, 1}}, {{{STA}, 2}, {{P2P, NAN}, 1}}})}}},
-
-        // AP + AP + STA concurrency
-        // 3 - (1 STA + 2 AP) or (1 STA + 1 of (P2P or NAN))
-        {"Dual AP Concurrency",
-         {{kMainModeId,
-           ChipIfaceCombination::make_vec(
-               {{{{STA}, 1}, {{AP}, 2}}, {{{STA}, 1}, {{P2P, NAN}, 1}}})}}},
-
-        // STA + STA concurrency and AP + AP + STA concurrency
-        // 4 - (1 STA + 2 AP) or (2 STA + 1 of (P2P or NAN))
-        {"Dual STA & Dual AP Concurrency",
-         {{kMainModeId,
-           ChipIfaceCombination::make_vec(
-               {{{{STA}, 1}, {{AP}, 2}}, {{{STA}, 2}, {{P2P, NAN}, 1}}})}}}};
-
-#undef STA
-#undef AP
-#undef P2P
-#undef NAN
-
-#ifdef WIFI_HIDL_FEATURE_DISABLE_AP_MAC_RANDOMIZATION
-#pragma message                                                               \
-    "WIFI_HIDL_FEATURE_DISABLE_AP_MAC_RANDOMIZATION is deprecated; override " \
-    "'config_wifi_ap_randomization_supported' in "                            \
-    "frameworks/base/core/res/res/values/config.xml in the device overlay "   \
-    "instead"
-#endif  // WIFI_HIDL_FEATURE_DISABLE_AP_MAC_RANDOMIZATION
-
-WifiFeatureFlags::WifiFeatureFlags() {}
-
-std::vector<IWifiChip::ChipMode> WifiFeatureFlags::getChipModesForPrimary() {
-    std::array<char, PROPERTY_VALUE_MAX> buffer;
-    auto res = property_get(kDebugPresetInterfaceCombinationIdxProperty,
-                            buffer.data(), nullptr);
-    // Debug propety not set, use the device preset interface combination.
-    if (res <= 0) return kChipModesPrimary;
-
-    // Debug propety set, use one of the debug preset interface combination.
-    unsigned long idx = std::stoul(buffer.data());
-    if (idx >= kDebugChipModes.size()) {
-        LOG(ERROR) << "Invalid index set in property: "
-                   << kDebugPresetInterfaceCombinationIdxProperty;
-        return kChipModesPrimary;
-    }
-    std::string name;
-    std::vector<IWifiChip::ChipMode> chip_modes;
-    std::tie(name, chip_modes) = kDebugChipModes[idx];
-    LOG(INFO) << "Using debug chip mode: <" << name << "> set via property: "
-              << kDebugPresetInterfaceCombinationIdxProperty;
-    return chip_modes;
-}
-
-std::vector<IWifiChip::ChipMode> WifiFeatureFlags::getChipModes(
-    bool is_primary) {
-    return (is_primary) ? getChipModesForPrimary() : kChipModesSecondary;
-}
-
-}  // namespace feature_flags
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.5/default/wifi_feature_flags.h b/wifi/1.5/default/wifi_feature_flags.h
deleted file mode 100644
index 7d561fc..0000000
--- a/wifi/1.5/default/wifi_feature_flags.h
+++ /dev/null
@@ -1,59 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef WIFI_FEATURE_FLAGS_H_
-#define WIFI_FEATURE_FLAGS_H_
-
-#include <android/hardware/wifi/1.2/IWifiChip.h>
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-namespace feature_flags {
-
-namespace chip_mode_ids {
-// These mode ID's should be unique (even across combo versions). Refer to
-// handleChipConfiguration() for it's usage.
-constexpr V1_0::ChipModeId kInvalid = UINT32_MAX;
-// Mode ID's for V1
-constexpr V1_0::ChipModeId kV1Sta = 0;
-constexpr V1_0::ChipModeId kV1Ap = 1;
-// Mode ID for V3
-constexpr V1_0::ChipModeId kV3 = 3;
-}  // namespace chip_mode_ids
-
-class WifiFeatureFlags {
-   public:
-    WifiFeatureFlags();
-    virtual ~WifiFeatureFlags() = default;
-
-    virtual std::vector<V1_0::IWifiChip::ChipMode> getChipModes(
-        bool is_primary);
-
-   private:
-    std::vector<V1_0::IWifiChip::ChipMode> getChipModesForPrimary();
-};
-
-}  // namespace feature_flags
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // WIFI_FEATURE_FLAGS_H_
diff --git a/wifi/1.5/default/wifi_iface_util.cpp b/wifi/1.5/default/wifi_iface_util.cpp
deleted file mode 100644
index 0977026..0000000
--- a/wifi/1.5/default/wifi_iface_util.cpp
+++ /dev/null
@@ -1,184 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <net/if.h>
-#include <cstddef>
-#include <iostream>
-#include <limits>
-#include <random>
-
-#include <android-base/logging.h>
-#include <android-base/macros.h>
-#include <private/android_filesystem_config.h>
-
-#undef NAN
-#include "wifi_iface_util.h"
-
-namespace {
-// Constants to set the local bit & clear the multicast bit.
-constexpr uint8_t kMacAddressMulticastMask = 0x01;
-constexpr uint8_t kMacAddressLocallyAssignedMask = 0x02;
-}  // namespace
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-namespace iface_util {
-
-WifiIfaceUtil::WifiIfaceUtil(
-    const std::weak_ptr<wifi_system::InterfaceTool> iface_tool,
-    const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal)
-    : iface_tool_(iface_tool),
-      legacy_hal_(legacy_hal),
-      random_mac_address_(nullptr),
-      event_handlers_map_() {}
-
-std::array<uint8_t, 6> WifiIfaceUtil::getFactoryMacAddress(
-    const std::string& iface_name) {
-    return iface_tool_.lock()->GetFactoryMacAddress(iface_name.c_str());
-}
-
-bool WifiIfaceUtil::setMacAddress(const std::string& iface_name,
-                                  const std::array<uint8_t, 6>& mac) {
-#ifndef WIFI_AVOID_IFACE_RESET_MAC_CHANGE
-    legacy_hal::wifi_error legacy_status;
-    uint64_t legacy_feature_set;
-    std::tie(legacy_status, legacy_feature_set) =
-        legacy_hal_.lock()->getSupportedFeatureSet(iface_name);
-
-    if (!(legacy_feature_set & WIFI_FEATURE_DYNAMIC_SET_MAC) &&
-        !iface_tool_.lock()->SetUpState(iface_name.c_str(), false)) {
-        LOG(ERROR) << "SetUpState(false) failed.";
-        return false;
-    }
-#endif
-    bool success = iface_tool_.lock()->SetMacAddress(iface_name.c_str(), mac);
-#ifndef WIFI_AVOID_IFACE_RESET_MAC_CHANGE
-    if (!(legacy_feature_set & WIFI_FEATURE_DYNAMIC_SET_MAC) &&
-        !iface_tool_.lock()->SetUpState(iface_name.c_str(), true)) {
-        LOG(ERROR) << "SetUpState(true) failed. Wait for driver ready.";
-        // Wait for driver ready and try to set iface UP again
-        if (legacy_hal_.lock()->waitForDriverReady() !=
-            legacy_hal::WIFI_SUCCESS) {
-            LOG(ERROR) << "SetUpState(true) wait for driver ready failed.";
-            return false;
-        }
-        if (!iface_tool_.lock()->SetUpState(iface_name.c_str(), true)) {
-            LOG(ERROR) << "SetUpState(true) failed after retry.";
-            return false;
-        }
-    }
-#endif
-    IfaceEventHandlers event_handlers = {};
-    const auto it = event_handlers_map_.find(iface_name);
-    if (it != event_handlers_map_.end()) {
-        event_handlers = it->second;
-    }
-    if (event_handlers.on_state_toggle_off_on != nullptr) {
-        event_handlers.on_state_toggle_off_on(iface_name);
-    }
-    if (!success) {
-        LOG(ERROR) << "SetMacAddress failed on " << iface_name;
-    } else {
-        LOG(DEBUG) << "SetMacAddress succeeded on " << iface_name;
-    }
-    return success;
-}
-
-std::array<uint8_t, 6> WifiIfaceUtil::getOrCreateRandomMacAddress() {
-    if (random_mac_address_) {
-        return *random_mac_address_.get();
-    }
-    random_mac_address_ =
-        std::make_unique<std::array<uint8_t, 6>>(createRandomMacAddress());
-    return *random_mac_address_.get();
-}
-
-void WifiIfaceUtil::registerIfaceEventHandlers(const std::string& iface_name,
-                                               IfaceEventHandlers handlers) {
-    event_handlers_map_[iface_name] = handlers;
-}
-
-void WifiIfaceUtil::unregisterIfaceEventHandlers(
-    const std::string& iface_name) {
-    event_handlers_map_.erase(iface_name);
-}
-
-std::array<uint8_t, 6> WifiIfaceUtil::createRandomMacAddress() {
-    std::array<uint8_t, 6> address = {};
-    std::random_device rd;
-    std::default_random_engine engine(rd());
-    std::uniform_int_distribution<uint8_t> dist(
-        std::numeric_limits<uint8_t>::min(),
-        std::numeric_limits<uint8_t>::max());
-    for (size_t i = 0; i < address.size(); i++) {
-        address[i] = dist(engine);
-    }
-    // Set the local bit and clear the multicast bit.
-    address[0] |= kMacAddressLocallyAssignedMask;
-    address[0] &= ~kMacAddressMulticastMask;
-    return address;
-}
-
-bool WifiIfaceUtil::setUpState(const std::string& iface_name, bool request_up) {
-    if (!iface_tool_.lock()->SetUpState(iface_name.c_str(), request_up)) {
-        LOG(ERROR) << "SetUpState to " << request_up << " failed";
-        return false;
-    }
-    return true;
-}
-
-unsigned WifiIfaceUtil::ifNameToIndex(const std::string& iface_name) {
-    return if_nametoindex(iface_name.c_str());
-}
-
-bool WifiIfaceUtil::createBridge(const std::string& br_name) {
-    if (!iface_tool_.lock()->createBridge(br_name)) {
-        return false;
-    }
-
-    if (!iface_tool_.lock()->SetUpState(br_name.c_str(), true)) {
-        LOG(ERROR) << "bridge SetUpState(true) failed.";
-    }
-    return true;
-}
-
-bool WifiIfaceUtil::deleteBridge(const std::string& br_name) {
-    if (!iface_tool_.lock()->SetUpState(br_name.c_str(), false)) {
-        LOG(INFO) << "SetUpState(false) failed for bridge=" << br_name.c_str();
-    }
-
-    return iface_tool_.lock()->deleteBridge(br_name);
-}
-
-bool WifiIfaceUtil::addIfaceToBridge(const std::string& br_name,
-                                     const std::string& if_name) {
-    return iface_tool_.lock()->addIfaceToBridge(br_name, if_name);
-}
-
-bool WifiIfaceUtil::removeIfaceFromBridge(const std::string& br_name,
-                                          const std::string& if_name) {
-    return iface_tool_.lock()->removeIfaceFromBridge(br_name, if_name);
-}
-
-}  // namespace iface_util
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.5/default/wifi_iface_util.h b/wifi/1.5/default/wifi_iface_util.h
deleted file mode 100644
index 544f575..0000000
--- a/wifi/1.5/default/wifi_iface_util.h
+++ /dev/null
@@ -1,91 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef WIFI_IFACE_UTIL_H_
-#define WIFI_IFACE_UTIL_H_
-
-#include <wifi_system/interface_tool.h>
-
-#include <android/hardware/wifi/1.0/IWifi.h>
-
-#include "wifi_legacy_hal.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-namespace iface_util {
-
-// Iface event handlers.
-struct IfaceEventHandlers {
-    // Callback to be invoked when the iface is set down & up for MAC address
-    // change.
-    std::function<void(const std::string& iface_name)> on_state_toggle_off_on;
-};
-
-/**
- * Util class for common iface operations.
- */
-class WifiIfaceUtil {
-   public:
-    WifiIfaceUtil(const std::weak_ptr<wifi_system::InterfaceTool> iface_tool,
-                  const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal);
-    virtual ~WifiIfaceUtil() = default;
-
-    virtual std::array<uint8_t, 6> getFactoryMacAddress(
-        const std::string& iface_name);
-    virtual bool setMacAddress(const std::string& iface_name,
-                               const std::array<uint8_t, 6>& mac);
-    // Get or create a random MAC address. The MAC address returned from
-    // this method will remain the same throughout the lifetime of the HAL
-    // daemon. (So, changes on every reboot)
-    virtual std::array<uint8_t, 6> getOrCreateRandomMacAddress();
-
-    // Register for any iface event callbacks for the provided interface.
-    virtual void registerIfaceEventHandlers(const std::string& iface_name,
-                                            IfaceEventHandlers handlers);
-    virtual void unregisterIfaceEventHandlers(const std::string& iface_name);
-    virtual bool setUpState(const std::string& iface_name, bool request_up);
-    virtual unsigned ifNameToIndex(const std::string& iface_name);
-
-    virtual bool createBridge(const std::string& br_name);
-
-    virtual bool deleteBridge(const std::string& br_name);
-
-    virtual bool addIfaceToBridge(const std::string& br_name,
-                                  const std::string& if_name);
-
-    virtual bool removeIfaceFromBridge(const std::string& br_name,
-                                       const std::string& if_name);
-    // Get a random MAC address.
-    virtual std::array<uint8_t, 6> createRandomMacAddress();
-
-   private:
-    std::weak_ptr<wifi_system::InterfaceTool> iface_tool_;
-    std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
-    std::unique_ptr<std::array<uint8_t, 6>> random_mac_address_;
-    std::map<std::string, IfaceEventHandlers> event_handlers_map_;
-};
-
-}  // namespace iface_util
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // WIFI_IFACE_UTIL_H_
diff --git a/wifi/1.5/default/wifi_legacy_hal.cpp b/wifi/1.5/default/wifi_legacy_hal.cpp
deleted file mode 100644
index 5074252..0000000
--- a/wifi/1.5/default/wifi_legacy_hal.cpp
+++ /dev/null
@@ -1,1725 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <array>
-#include <chrono>
-
-#include <android-base/logging.h>
-#include <cutils/properties.h>
-#include <net/if.h>
-
-#include "hidl_sync_util.h"
-#include "wifi_legacy_hal.h"
-#include "wifi_legacy_hal_stubs.h"
-
-namespace {
-// Constants ported over from the legacy HAL calling code
-// (com_android_server_wifi_WifiNative.cpp). This will all be thrown
-// away when this shim layer is replaced by the real vendor
-// implementation.
-static constexpr uint32_t kMaxVersionStringLength = 256;
-static constexpr uint32_t kMaxCachedGscanResults = 64;
-static constexpr uint32_t kMaxGscanFrequenciesForBand = 64;
-static constexpr uint32_t kLinkLayerStatsDataMpduSizeThreshold = 128;
-static constexpr uint32_t kMaxWakeReasonStatsArraySize = 32;
-static constexpr uint32_t kMaxRingBuffers = 10;
-static constexpr uint32_t kMaxWifiUsableChannels = 256;
-// need a long timeout (1000ms) for chips that unload their driver.
-static constexpr uint32_t kMaxStopCompleteWaitMs = 1000;
-static constexpr char kDriverPropName[] = "wlan.driver.status";
-
-// Helper function to create a non-const char* for legacy Hal API's.
-std::vector<char> makeCharVec(const std::string& str) {
-    std::vector<char> vec(str.size() + 1);
-    vec.assign(str.begin(), str.end());
-    vec.push_back('\0');
-    return vec;
-}
-}  // namespace
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-namespace legacy_hal {
-
-// Legacy HAL functions accept "C" style function pointers, so use global
-// functions to pass to the legacy HAL function and store the corresponding
-// std::function methods to be invoked.
-//
-// Callback to be invoked once |stop| is complete
-std::function<void(wifi_handle handle)> on_stop_complete_internal_callback;
-void onAsyncStopComplete(wifi_handle handle) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_stop_complete_internal_callback) {
-        on_stop_complete_internal_callback(handle);
-        // Invalidate this callback since we don't want this firing again.
-        on_stop_complete_internal_callback = nullptr;
-    }
-}
-
-// Callback to be invoked for driver dump.
-std::function<void(char*, int)> on_driver_memory_dump_internal_callback;
-void onSyncDriverMemoryDump(char* buffer, int buffer_size) {
-    if (on_driver_memory_dump_internal_callback) {
-        on_driver_memory_dump_internal_callback(buffer, buffer_size);
-    }
-}
-
-// Callback to be invoked for firmware dump.
-std::function<void(char*, int)> on_firmware_memory_dump_internal_callback;
-void onSyncFirmwareMemoryDump(char* buffer, int buffer_size) {
-    if (on_firmware_memory_dump_internal_callback) {
-        on_firmware_memory_dump_internal_callback(buffer, buffer_size);
-    }
-}
-
-// Callback to be invoked for Gscan events.
-std::function<void(wifi_request_id, wifi_scan_event)>
-    on_gscan_event_internal_callback;
-void onAsyncGscanEvent(wifi_request_id id, wifi_scan_event event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_gscan_event_internal_callback) {
-        on_gscan_event_internal_callback(id, event);
-    }
-}
-
-// Callback to be invoked for Gscan full results.
-std::function<void(wifi_request_id, wifi_scan_result*, uint32_t)>
-    on_gscan_full_result_internal_callback;
-void onAsyncGscanFullResult(wifi_request_id id, wifi_scan_result* result,
-                            uint32_t buckets_scanned) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_gscan_full_result_internal_callback) {
-        on_gscan_full_result_internal_callback(id, result, buckets_scanned);
-    }
-}
-
-// Callback to be invoked for link layer stats results.
-std::function<void((wifi_request_id, wifi_iface_stat*, int, wifi_radio_stat*))>
-    on_link_layer_stats_result_internal_callback;
-void onSyncLinkLayerStatsResult(wifi_request_id id, wifi_iface_stat* iface_stat,
-                                int num_radios, wifi_radio_stat* radio_stat) {
-    if (on_link_layer_stats_result_internal_callback) {
-        on_link_layer_stats_result_internal_callback(id, iface_stat, num_radios,
-                                                     radio_stat);
-    }
-}
-
-// Callback to be invoked for rssi threshold breach.
-std::function<void((wifi_request_id, uint8_t*, int8_t))>
-    on_rssi_threshold_breached_internal_callback;
-void onAsyncRssiThresholdBreached(wifi_request_id id, uint8_t* bssid,
-                                  int8_t rssi) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_rssi_threshold_breached_internal_callback) {
-        on_rssi_threshold_breached_internal_callback(id, bssid, rssi);
-    }
-}
-
-// Callback to be invoked for ring buffer data indication.
-std::function<void(char*, char*, int, wifi_ring_buffer_status*)>
-    on_ring_buffer_data_internal_callback;
-void onAsyncRingBufferData(char* ring_name, char* buffer, int buffer_size,
-                           wifi_ring_buffer_status* status) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_ring_buffer_data_internal_callback) {
-        on_ring_buffer_data_internal_callback(ring_name, buffer, buffer_size,
-                                              status);
-    }
-}
-
-// Callback to be invoked for error alert indication.
-std::function<void(wifi_request_id, char*, int, int)>
-    on_error_alert_internal_callback;
-void onAsyncErrorAlert(wifi_request_id id, char* buffer, int buffer_size,
-                       int err_code) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_error_alert_internal_callback) {
-        on_error_alert_internal_callback(id, buffer, buffer_size, err_code);
-    }
-}
-
-// Callback to be invoked for radio mode change indication.
-std::function<void(wifi_request_id, uint32_t, wifi_mac_info*)>
-    on_radio_mode_change_internal_callback;
-void onAsyncRadioModeChange(wifi_request_id id, uint32_t num_macs,
-                            wifi_mac_info* mac_infos) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_radio_mode_change_internal_callback) {
-        on_radio_mode_change_internal_callback(id, num_macs, mac_infos);
-    }
-}
-
-// Callback to be invoked to report subsystem restart
-std::function<void(const char*)> on_subsystem_restart_internal_callback;
-void onAsyncSubsystemRestart(const char* error) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_subsystem_restart_internal_callback) {
-        on_subsystem_restart_internal_callback(error);
-    }
-}
-
-// Callback to be invoked for rtt results results.
-std::function<void(wifi_request_id, unsigned num_results,
-                   wifi_rtt_result* rtt_results[])>
-    on_rtt_results_internal_callback;
-void onAsyncRttResults(wifi_request_id id, unsigned num_results,
-                       wifi_rtt_result* rtt_results[]) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_rtt_results_internal_callback) {
-        on_rtt_results_internal_callback(id, num_results, rtt_results);
-        on_rtt_results_internal_callback = nullptr;
-    }
-}
-
-// Callbacks for the various NAN operations.
-// NOTE: These have very little conversions to perform before invoking the user
-// callbacks.
-// So, handle all of them here directly to avoid adding an unnecessary layer.
-std::function<void(transaction_id, const NanResponseMsg&)>
-    on_nan_notify_response_user_callback;
-void onAysncNanNotifyResponse(transaction_id id, NanResponseMsg* msg) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_notify_response_user_callback && msg) {
-        on_nan_notify_response_user_callback(id, *msg);
-    }
-}
-
-std::function<void(const NanPublishRepliedInd&)>
-    on_nan_event_publish_replied_user_callback;
-void onAysncNanEventPublishReplied(NanPublishRepliedInd* /* event */) {
-    LOG(ERROR) << "onAysncNanEventPublishReplied triggered";
-}
-
-std::function<void(const NanPublishTerminatedInd&)>
-    on_nan_event_publish_terminated_user_callback;
-void onAysncNanEventPublishTerminated(NanPublishTerminatedInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_publish_terminated_user_callback && event) {
-        on_nan_event_publish_terminated_user_callback(*event);
-    }
-}
-
-std::function<void(const NanMatchInd&)> on_nan_event_match_user_callback;
-void onAysncNanEventMatch(NanMatchInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_match_user_callback && event) {
-        on_nan_event_match_user_callback(*event);
-    }
-}
-
-std::function<void(const NanMatchExpiredInd&)>
-    on_nan_event_match_expired_user_callback;
-void onAysncNanEventMatchExpired(NanMatchExpiredInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_match_expired_user_callback && event) {
-        on_nan_event_match_expired_user_callback(*event);
-    }
-}
-
-std::function<void(const NanSubscribeTerminatedInd&)>
-    on_nan_event_subscribe_terminated_user_callback;
-void onAysncNanEventSubscribeTerminated(NanSubscribeTerminatedInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_subscribe_terminated_user_callback && event) {
-        on_nan_event_subscribe_terminated_user_callback(*event);
-    }
-}
-
-std::function<void(const NanFollowupInd&)> on_nan_event_followup_user_callback;
-void onAysncNanEventFollowup(NanFollowupInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_followup_user_callback && event) {
-        on_nan_event_followup_user_callback(*event);
-    }
-}
-
-std::function<void(const NanDiscEngEventInd&)>
-    on_nan_event_disc_eng_event_user_callback;
-void onAysncNanEventDiscEngEvent(NanDiscEngEventInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_disc_eng_event_user_callback && event) {
-        on_nan_event_disc_eng_event_user_callback(*event);
-    }
-}
-
-std::function<void(const NanDisabledInd&)> on_nan_event_disabled_user_callback;
-void onAysncNanEventDisabled(NanDisabledInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_disabled_user_callback && event) {
-        on_nan_event_disabled_user_callback(*event);
-    }
-}
-
-std::function<void(const NanTCAInd&)> on_nan_event_tca_user_callback;
-void onAysncNanEventTca(NanTCAInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_tca_user_callback && event) {
-        on_nan_event_tca_user_callback(*event);
-    }
-}
-
-std::function<void(const NanBeaconSdfPayloadInd&)>
-    on_nan_event_beacon_sdf_payload_user_callback;
-void onAysncNanEventBeaconSdfPayload(NanBeaconSdfPayloadInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_beacon_sdf_payload_user_callback && event) {
-        on_nan_event_beacon_sdf_payload_user_callback(*event);
-    }
-}
-
-std::function<void(const NanDataPathRequestInd&)>
-    on_nan_event_data_path_request_user_callback;
-void onAysncNanEventDataPathRequest(NanDataPathRequestInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_data_path_request_user_callback && event) {
-        on_nan_event_data_path_request_user_callback(*event);
-    }
-}
-std::function<void(const NanDataPathConfirmInd&)>
-    on_nan_event_data_path_confirm_user_callback;
-void onAysncNanEventDataPathConfirm(NanDataPathConfirmInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_data_path_confirm_user_callback && event) {
-        on_nan_event_data_path_confirm_user_callback(*event);
-    }
-}
-
-std::function<void(const NanDataPathEndInd&)>
-    on_nan_event_data_path_end_user_callback;
-void onAysncNanEventDataPathEnd(NanDataPathEndInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_data_path_end_user_callback && event) {
-        on_nan_event_data_path_end_user_callback(*event);
-    }
-}
-
-std::function<void(const NanTransmitFollowupInd&)>
-    on_nan_event_transmit_follow_up_user_callback;
-void onAysncNanEventTransmitFollowUp(NanTransmitFollowupInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_transmit_follow_up_user_callback && event) {
-        on_nan_event_transmit_follow_up_user_callback(*event);
-    }
-}
-
-std::function<void(const NanRangeRequestInd&)>
-    on_nan_event_range_request_user_callback;
-void onAysncNanEventRangeRequest(NanRangeRequestInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_range_request_user_callback && event) {
-        on_nan_event_range_request_user_callback(*event);
-    }
-}
-
-std::function<void(const NanRangeReportInd&)>
-    on_nan_event_range_report_user_callback;
-void onAysncNanEventRangeReport(NanRangeReportInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_range_report_user_callback && event) {
-        on_nan_event_range_report_user_callback(*event);
-    }
-}
-
-std::function<void(const NanDataPathScheduleUpdateInd&)>
-    on_nan_event_schedule_update_user_callback;
-void onAsyncNanEventScheduleUpdate(NanDataPathScheduleUpdateInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_schedule_update_user_callback && event) {
-        on_nan_event_schedule_update_user_callback(*event);
-    }
-}
-
-// Callbacks for the various TWT operations.
-std::function<void(const TwtSetupResponse&)>
-    on_twt_event_setup_response_callback;
-void onAsyncTwtEventSetupResponse(TwtSetupResponse* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_twt_event_setup_response_callback && event) {
-        on_twt_event_setup_response_callback(*event);
-    }
-}
-
-std::function<void(const TwtTeardownCompletion&)>
-    on_twt_event_teardown_completion_callback;
-void onAsyncTwtEventTeardownCompletion(TwtTeardownCompletion* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_twt_event_teardown_completion_callback && event) {
-        on_twt_event_teardown_completion_callback(*event);
-    }
-}
-
-std::function<void(const TwtInfoFrameReceived&)>
-    on_twt_event_info_frame_received_callback;
-void onAsyncTwtEventInfoFrameReceived(TwtInfoFrameReceived* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_twt_event_info_frame_received_callback && event) {
-        on_twt_event_info_frame_received_callback(*event);
-    }
-}
-
-std::function<void(const TwtDeviceNotify&)> on_twt_event_device_notify_callback;
-void onAsyncTwtEventDeviceNotify(TwtDeviceNotify* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_twt_event_device_notify_callback && event) {
-        on_twt_event_device_notify_callback(*event);
-    }
-}
-
-// End of the free-standing "C" style callbacks.
-
-WifiLegacyHal::WifiLegacyHal(
-    const std::weak_ptr<wifi_system::InterfaceTool> iface_tool,
-    const wifi_hal_fn& fn, bool is_primary)
-    : global_func_table_(fn),
-      global_handle_(nullptr),
-      awaiting_event_loop_termination_(false),
-      is_started_(false),
-      iface_tool_(iface_tool),
-      is_primary_(is_primary) {}
-
-wifi_error WifiLegacyHal::initialize() {
-    LOG(DEBUG) << "Initialize legacy HAL";
-    // this now does nothing, since HAL function table is provided
-    // to the constructor
-    return WIFI_SUCCESS;
-}
-
-wifi_error WifiLegacyHal::start() {
-    // Ensure that we're starting in a good state.
-    CHECK(global_func_table_.wifi_initialize && !global_handle_ &&
-          iface_name_to_handle_.empty() && !awaiting_event_loop_termination_);
-    if (is_started_) {
-        LOG(DEBUG) << "Legacy HAL already started";
-        return WIFI_SUCCESS;
-    }
-    LOG(DEBUG) << "Waiting for the driver ready";
-    wifi_error status = global_func_table_.wifi_wait_for_driver_ready();
-    if (status == WIFI_ERROR_TIMED_OUT || status == WIFI_ERROR_UNKNOWN) {
-        LOG(ERROR) << "Failed or timed out awaiting driver ready";
-        return status;
-    }
-
-    if (is_primary_) {
-        property_set(kDriverPropName, "ok");
-
-        if (!iface_tool_.lock()->SetWifiUpState(true)) {
-            LOG(ERROR) << "Failed to set WiFi interface up";
-            return WIFI_ERROR_UNKNOWN;
-        }
-    }
-
-    LOG(DEBUG) << "Starting legacy HAL";
-    status = global_func_table_.wifi_initialize(&global_handle_);
-    if (status != WIFI_SUCCESS || !global_handle_) {
-        LOG(ERROR) << "Failed to retrieve global handle";
-        return status;
-    }
-    std::thread(&WifiLegacyHal::runEventLoop, this).detach();
-    status = retrieveIfaceHandles();
-    if (status != WIFI_SUCCESS || iface_name_to_handle_.empty()) {
-        LOG(ERROR) << "Failed to retrieve wlan interface handle";
-        return status;
-    }
-    LOG(DEBUG) << "Legacy HAL start complete";
-    is_started_ = true;
-    return WIFI_SUCCESS;
-}
-
-wifi_error WifiLegacyHal::stop(
-    /* NONNULL */ std::unique_lock<std::recursive_mutex>* lock,
-    const std::function<void()>& on_stop_complete_user_callback) {
-    if (!is_started_) {
-        LOG(DEBUG) << "Legacy HAL already stopped";
-        on_stop_complete_user_callback();
-        return WIFI_SUCCESS;
-    }
-    LOG(DEBUG) << "Stopping legacy HAL";
-    on_stop_complete_internal_callback = [on_stop_complete_user_callback,
-                                          this](wifi_handle handle) {
-        CHECK_EQ(global_handle_, handle) << "Handle mismatch";
-        LOG(INFO) << "Legacy HAL stop complete callback received";
-        // Invalidate all the internal pointers now that the HAL is
-        // stopped.
-        invalidate();
-        if (is_primary_) iface_tool_.lock()->SetWifiUpState(false);
-        on_stop_complete_user_callback();
-        is_started_ = false;
-    };
-    awaiting_event_loop_termination_ = true;
-    global_func_table_.wifi_cleanup(global_handle_, onAsyncStopComplete);
-    const auto status = stop_wait_cv_.wait_for(
-        *lock, std::chrono::milliseconds(kMaxStopCompleteWaitMs),
-        [this] { return !awaiting_event_loop_termination_; });
-    if (!status) {
-        LOG(ERROR) << "Legacy HAL stop failed or timed out";
-        return WIFI_ERROR_UNKNOWN;
-    }
-    LOG(DEBUG) << "Legacy HAL stop complete";
-    return WIFI_SUCCESS;
-}
-
-bool WifiLegacyHal::isStarted() { return is_started_; }
-
-wifi_error WifiLegacyHal::waitForDriverReady() {
-    return global_func_table_.wifi_wait_for_driver_ready();
-}
-
-std::pair<wifi_error, std::string> WifiLegacyHal::getDriverVersion(
-    const std::string& iface_name) {
-    std::array<char, kMaxVersionStringLength> buffer;
-    buffer.fill(0);
-    wifi_error status = global_func_table_.wifi_get_driver_version(
-        getIfaceHandle(iface_name), buffer.data(), buffer.size());
-    return {status, buffer.data()};
-}
-
-std::pair<wifi_error, std::string> WifiLegacyHal::getFirmwareVersion(
-    const std::string& iface_name) {
-    std::array<char, kMaxVersionStringLength> buffer;
-    buffer.fill(0);
-    wifi_error status = global_func_table_.wifi_get_firmware_version(
-        getIfaceHandle(iface_name), buffer.data(), buffer.size());
-    return {status, buffer.data()};
-}
-
-std::pair<wifi_error, std::vector<uint8_t>>
-WifiLegacyHal::requestDriverMemoryDump(const std::string& iface_name) {
-    std::vector<uint8_t> driver_dump;
-    on_driver_memory_dump_internal_callback = [&driver_dump](char* buffer,
-                                                             int buffer_size) {
-        driver_dump.insert(driver_dump.end(),
-                           reinterpret_cast<uint8_t*>(buffer),
-                           reinterpret_cast<uint8_t*>(buffer) + buffer_size);
-    };
-    wifi_error status = global_func_table_.wifi_get_driver_memory_dump(
-        getIfaceHandle(iface_name), {onSyncDriverMemoryDump});
-    on_driver_memory_dump_internal_callback = nullptr;
-    return {status, std::move(driver_dump)};
-}
-
-std::pair<wifi_error, std::vector<uint8_t>>
-WifiLegacyHal::requestFirmwareMemoryDump(const std::string& iface_name) {
-    std::vector<uint8_t> firmware_dump;
-    on_firmware_memory_dump_internal_callback =
-        [&firmware_dump](char* buffer, int buffer_size) {
-            firmware_dump.insert(
-                firmware_dump.end(), reinterpret_cast<uint8_t*>(buffer),
-                reinterpret_cast<uint8_t*>(buffer) + buffer_size);
-        };
-    wifi_error status = global_func_table_.wifi_get_firmware_memory_dump(
-        getIfaceHandle(iface_name), {onSyncFirmwareMemoryDump});
-    on_firmware_memory_dump_internal_callback = nullptr;
-    return {status, std::move(firmware_dump)};
-}
-
-std::pair<wifi_error, uint64_t> WifiLegacyHal::getSupportedFeatureSet(
-    const std::string& iface_name) {
-    feature_set set = 0, chip_set = 0;
-    wifi_error status = WIFI_SUCCESS;
-
-    static_assert(sizeof(set) == sizeof(uint64_t),
-                  "Some feature_flags can not be represented in output");
-    wifi_interface_handle iface_handle = getIfaceHandle(iface_name);
-
-    global_func_table_.wifi_get_chip_feature_set(
-        global_handle_, &chip_set); /* ignore error, chip_set will stay 0 */
-
-    if (iface_handle) {
-        status = global_func_table_.wifi_get_supported_feature_set(iface_handle,
-                                                                   &set);
-    }
-    return {status, static_cast<uint64_t>(set | chip_set)};
-}
-
-std::pair<wifi_error, PacketFilterCapabilities>
-WifiLegacyHal::getPacketFilterCapabilities(const std::string& iface_name) {
-    PacketFilterCapabilities caps;
-    wifi_error status = global_func_table_.wifi_get_packet_filter_capabilities(
-        getIfaceHandle(iface_name), &caps.version, &caps.max_len);
-    return {status, caps};
-}
-
-wifi_error WifiLegacyHal::setPacketFilter(const std::string& iface_name,
-                                          const std::vector<uint8_t>& program) {
-    return global_func_table_.wifi_set_packet_filter(
-        getIfaceHandle(iface_name), program.data(), program.size());
-}
-
-std::pair<wifi_error, std::vector<uint8_t>>
-WifiLegacyHal::readApfPacketFilterData(const std::string& iface_name) {
-    PacketFilterCapabilities caps;
-    wifi_error status = global_func_table_.wifi_get_packet_filter_capabilities(
-        getIfaceHandle(iface_name), &caps.version, &caps.max_len);
-    if (status != WIFI_SUCCESS) {
-        return {status, {}};
-    }
-
-    // Size the buffer to read the entire program & work memory.
-    std::vector<uint8_t> buffer(caps.max_len);
-
-    status = global_func_table_.wifi_read_packet_filter(
-        getIfaceHandle(iface_name), /*src_offset=*/0, buffer.data(),
-        buffer.size());
-    return {status, move(buffer)};
-}
-
-std::pair<wifi_error, wifi_gscan_capabilities>
-WifiLegacyHal::getGscanCapabilities(const std::string& iface_name) {
-    wifi_gscan_capabilities caps;
-    wifi_error status = global_func_table_.wifi_get_gscan_capabilities(
-        getIfaceHandle(iface_name), &caps);
-    return {status, caps};
-}
-
-wifi_error WifiLegacyHal::startGscan(
-    const std::string& iface_name, wifi_request_id id,
-    const wifi_scan_cmd_params& params,
-    const std::function<void(wifi_request_id)>& on_failure_user_callback,
-    const on_gscan_results_callback& on_results_user_callback,
-    const on_gscan_full_result_callback& on_full_result_user_callback) {
-    // If there is already an ongoing background scan, reject new scan requests.
-    if (on_gscan_event_internal_callback ||
-        on_gscan_full_result_internal_callback) {
-        return WIFI_ERROR_NOT_AVAILABLE;
-    }
-
-    // This callback will be used to either trigger |on_results_user_callback|
-    // or |on_failure_user_callback|.
-    on_gscan_event_internal_callback =
-        [iface_name, on_failure_user_callback, on_results_user_callback, this](
-            wifi_request_id id, wifi_scan_event event) {
-            switch (event) {
-                case WIFI_SCAN_RESULTS_AVAILABLE:
-                case WIFI_SCAN_THRESHOLD_NUM_SCANS:
-                case WIFI_SCAN_THRESHOLD_PERCENT: {
-                    wifi_error status;
-                    std::vector<wifi_cached_scan_results> cached_scan_results;
-                    std::tie(status, cached_scan_results) =
-                        getGscanCachedResults(iface_name);
-                    if (status == WIFI_SUCCESS) {
-                        on_results_user_callback(id, cached_scan_results);
-                        return;
-                    }
-                    FALLTHROUGH_INTENDED;
-                }
-                // Fall through if failed. Failure to retrieve cached scan
-                // results should trigger a background scan failure.
-                case WIFI_SCAN_FAILED:
-                    on_failure_user_callback(id);
-                    on_gscan_event_internal_callback = nullptr;
-                    on_gscan_full_result_internal_callback = nullptr;
-                    return;
-            }
-            LOG(FATAL) << "Unexpected gscan event received: " << event;
-        };
-
-    on_gscan_full_result_internal_callback = [on_full_result_user_callback](
-                                                 wifi_request_id id,
-                                                 wifi_scan_result* result,
-                                                 uint32_t buckets_scanned) {
-        if (result) {
-            on_full_result_user_callback(id, result, buckets_scanned);
-        }
-    };
-
-    wifi_scan_result_handler handler = {onAsyncGscanFullResult,
-                                        onAsyncGscanEvent};
-    wifi_error status = global_func_table_.wifi_start_gscan(
-        id, getIfaceHandle(iface_name), params, handler);
-    if (status != WIFI_SUCCESS) {
-        on_gscan_event_internal_callback = nullptr;
-        on_gscan_full_result_internal_callback = nullptr;
-    }
-    return status;
-}
-
-wifi_error WifiLegacyHal::stopGscan(const std::string& iface_name,
-                                    wifi_request_id id) {
-    // If there is no an ongoing background scan, reject stop requests.
-    // TODO(b/32337212): This needs to be handled by the HIDL object because we
-    // need to return the NOT_STARTED error code.
-    if (!on_gscan_event_internal_callback &&
-        !on_gscan_full_result_internal_callback) {
-        return WIFI_ERROR_NOT_AVAILABLE;
-    }
-    wifi_error status =
-        global_func_table_.wifi_stop_gscan(id, getIfaceHandle(iface_name));
-    // If the request Id is wrong, don't stop the ongoing background scan. Any
-    // other error should be treated as the end of background scan.
-    if (status != WIFI_ERROR_INVALID_REQUEST_ID) {
-        on_gscan_event_internal_callback = nullptr;
-        on_gscan_full_result_internal_callback = nullptr;
-    }
-    return status;
-}
-
-std::pair<wifi_error, std::vector<uint32_t>>
-WifiLegacyHal::getValidFrequenciesForBand(const std::string& iface_name,
-                                          wifi_band band) {
-    static_assert(sizeof(uint32_t) >= sizeof(wifi_channel),
-                  "Wifi Channel cannot be represented in output");
-    std::vector<uint32_t> freqs;
-    freqs.resize(kMaxGscanFrequenciesForBand);
-    int32_t num_freqs = 0;
-    wifi_error status = global_func_table_.wifi_get_valid_channels(
-        getIfaceHandle(iface_name), band, freqs.size(),
-        reinterpret_cast<wifi_channel*>(freqs.data()), &num_freqs);
-    CHECK(num_freqs >= 0 &&
-          static_cast<uint32_t>(num_freqs) <= kMaxGscanFrequenciesForBand);
-    freqs.resize(num_freqs);
-    return {status, std::move(freqs)};
-}
-
-wifi_error WifiLegacyHal::setDfsFlag(const std::string& iface_name,
-                                     bool dfs_on) {
-    return global_func_table_.wifi_set_nodfs_flag(getIfaceHandle(iface_name),
-                                                  dfs_on ? 0 : 1);
-}
-
-wifi_error WifiLegacyHal::enableLinkLayerStats(const std::string& iface_name,
-                                               bool debug) {
-    wifi_link_layer_params params;
-    params.mpdu_size_threshold = kLinkLayerStatsDataMpduSizeThreshold;
-    params.aggressive_statistics_gathering = debug;
-    return global_func_table_.wifi_set_link_stats(getIfaceHandle(iface_name),
-                                                  params);
-}
-
-wifi_error WifiLegacyHal::disableLinkLayerStats(const std::string& iface_name) {
-    // TODO: Do we care about these responses?
-    uint32_t clear_mask_rsp;
-    uint8_t stop_rsp;
-    return global_func_table_.wifi_clear_link_stats(
-        getIfaceHandle(iface_name), 0xFFFFFFFF, &clear_mask_rsp, 1, &stop_rsp);
-}
-
-std::pair<wifi_error, LinkLayerStats> WifiLegacyHal::getLinkLayerStats(
-    const std::string& iface_name) {
-    LinkLayerStats link_stats{};
-    LinkLayerStats* link_stats_ptr = &link_stats;
-
-    on_link_layer_stats_result_internal_callback =
-        [&link_stats_ptr](wifi_request_id /* id */,
-                          wifi_iface_stat* iface_stats_ptr, int num_radios,
-                          wifi_radio_stat* radio_stats_ptr) {
-            wifi_radio_stat* l_radio_stats_ptr;
-            wifi_peer_info* l_peer_info_stats_ptr;
-
-            if (iface_stats_ptr != nullptr) {
-                link_stats_ptr->iface = *iface_stats_ptr;
-                l_peer_info_stats_ptr = iface_stats_ptr->peer_info;
-                for (uint32_t i = 0; i < iface_stats_ptr->num_peers; i++) {
-                    WifiPeerInfo peer;
-                    peer.peer_info = *l_peer_info_stats_ptr;
-                    if (l_peer_info_stats_ptr->num_rate > 0) {
-                        /* Copy the rate stats */
-                        peer.rate_stats.assign(
-                            l_peer_info_stats_ptr->rate_stats,
-                            l_peer_info_stats_ptr->rate_stats +
-                                l_peer_info_stats_ptr->num_rate);
-                    }
-                    peer.peer_info.num_rate = 0;
-                    link_stats_ptr->peers.push_back(peer);
-                    l_peer_info_stats_ptr =
-                        (wifi_peer_info*)((u8*)l_peer_info_stats_ptr +
-                                          sizeof(wifi_peer_info) +
-                                          (sizeof(wifi_rate_stat) *
-                                           l_peer_info_stats_ptr->num_rate));
-                }
-                link_stats_ptr->iface.num_peers = 0;
-            } else {
-                LOG(ERROR) << "Invalid iface stats in link layer stats";
-            }
-            if (num_radios <= 0 || radio_stats_ptr == nullptr) {
-                LOG(ERROR) << "Invalid radio stats in link layer stats";
-                return;
-            }
-            l_radio_stats_ptr = radio_stats_ptr;
-            for (int i = 0; i < num_radios; i++) {
-                LinkLayerRadioStats radio;
-
-                radio.stats = *l_radio_stats_ptr;
-                // Copy over the tx level array to the separate vector.
-                if (l_radio_stats_ptr->num_tx_levels > 0 &&
-                    l_radio_stats_ptr->tx_time_per_levels != nullptr) {
-                    radio.tx_time_per_levels.assign(
-                        l_radio_stats_ptr->tx_time_per_levels,
-                        l_radio_stats_ptr->tx_time_per_levels +
-                            l_radio_stats_ptr->num_tx_levels);
-                }
-                radio.stats.num_tx_levels = 0;
-                radio.stats.tx_time_per_levels = nullptr;
-                /* Copy over the channel stat to separate vector */
-                if (l_radio_stats_ptr->num_channels > 0) {
-                    /* Copy the channel stats */
-                    radio.channel_stats.assign(
-                        l_radio_stats_ptr->channels,
-                        l_radio_stats_ptr->channels +
-                            l_radio_stats_ptr->num_channels);
-                }
-                link_stats_ptr->radios.push_back(radio);
-                l_radio_stats_ptr =
-                    (wifi_radio_stat*)((u8*)l_radio_stats_ptr +
-                                       sizeof(wifi_radio_stat) +
-                                       (sizeof(wifi_channel_stat) *
-                                        l_radio_stats_ptr->num_channels));
-            }
-        };
-
-    wifi_error status = global_func_table_.wifi_get_link_stats(
-        0, getIfaceHandle(iface_name), {onSyncLinkLayerStatsResult});
-    on_link_layer_stats_result_internal_callback = nullptr;
-    return {status, link_stats};
-}
-
-wifi_error WifiLegacyHal::startRssiMonitoring(
-    const std::string& iface_name, wifi_request_id id, int8_t max_rssi,
-    int8_t min_rssi,
-    const on_rssi_threshold_breached_callback&
-        on_threshold_breached_user_callback) {
-    if (on_rssi_threshold_breached_internal_callback) {
-        return WIFI_ERROR_NOT_AVAILABLE;
-    }
-    on_rssi_threshold_breached_internal_callback =
-        [on_threshold_breached_user_callback](wifi_request_id id,
-                                              uint8_t* bssid_ptr, int8_t rssi) {
-            if (!bssid_ptr) {
-                return;
-            }
-            std::array<uint8_t, 6> bssid_arr;
-            // |bssid_ptr| pointer is assumed to have 6 bytes for the mac
-            // address.
-            std::copy(bssid_ptr, bssid_ptr + 6, std::begin(bssid_arr));
-            on_threshold_breached_user_callback(id, bssid_arr, rssi);
-        };
-    wifi_error status = global_func_table_.wifi_start_rssi_monitoring(
-        id, getIfaceHandle(iface_name), max_rssi, min_rssi,
-        {onAsyncRssiThresholdBreached});
-    if (status != WIFI_SUCCESS) {
-        on_rssi_threshold_breached_internal_callback = nullptr;
-    }
-    return status;
-}
-
-wifi_error WifiLegacyHal::stopRssiMonitoring(const std::string& iface_name,
-                                             wifi_request_id id) {
-    if (!on_rssi_threshold_breached_internal_callback) {
-        return WIFI_ERROR_NOT_AVAILABLE;
-    }
-    wifi_error status = global_func_table_.wifi_stop_rssi_monitoring(
-        id, getIfaceHandle(iface_name));
-    // If the request Id is wrong, don't stop the ongoing rssi monitoring. Any
-    // other error should be treated as the end of background scan.
-    if (status != WIFI_ERROR_INVALID_REQUEST_ID) {
-        on_rssi_threshold_breached_internal_callback = nullptr;
-    }
-    return status;
-}
-
-std::pair<wifi_error, wifi_roaming_capabilities>
-WifiLegacyHal::getRoamingCapabilities(const std::string& iface_name) {
-    wifi_roaming_capabilities caps;
-    wifi_error status = global_func_table_.wifi_get_roaming_capabilities(
-        getIfaceHandle(iface_name), &caps);
-    return {status, caps};
-}
-
-wifi_error WifiLegacyHal::configureRoaming(const std::string& iface_name,
-                                           const wifi_roaming_config& config) {
-    wifi_roaming_config config_internal = config;
-    return global_func_table_.wifi_configure_roaming(getIfaceHandle(iface_name),
-                                                     &config_internal);
-}
-
-wifi_error WifiLegacyHal::enableFirmwareRoaming(const std::string& iface_name,
-                                                fw_roaming_state_t state) {
-    return global_func_table_.wifi_enable_firmware_roaming(
-        getIfaceHandle(iface_name), state);
-}
-
-wifi_error WifiLegacyHal::configureNdOffload(const std::string& iface_name,
-                                             bool enable) {
-    return global_func_table_.wifi_configure_nd_offload(
-        getIfaceHandle(iface_name), enable);
-}
-
-wifi_error WifiLegacyHal::startSendingOffloadedPacket(
-    const std::string& iface_name, uint32_t cmd_id, uint16_t ether_type,
-    const std::vector<uint8_t>& ip_packet_data,
-    const std::array<uint8_t, 6>& src_address,
-    const std::array<uint8_t, 6>& dst_address, uint32_t period_in_ms) {
-    std::vector<uint8_t> ip_packet_data_internal(ip_packet_data);
-    std::vector<uint8_t> src_address_internal(
-        src_address.data(), src_address.data() + src_address.size());
-    std::vector<uint8_t> dst_address_internal(
-        dst_address.data(), dst_address.data() + dst_address.size());
-    return global_func_table_.wifi_start_sending_offloaded_packet(
-        cmd_id, getIfaceHandle(iface_name), ether_type,
-        ip_packet_data_internal.data(), ip_packet_data_internal.size(),
-        src_address_internal.data(), dst_address_internal.data(), period_in_ms);
-}
-
-wifi_error WifiLegacyHal::stopSendingOffloadedPacket(
-    const std::string& iface_name, uint32_t cmd_id) {
-    return global_func_table_.wifi_stop_sending_offloaded_packet(
-        cmd_id, getIfaceHandle(iface_name));
-}
-
-wifi_error WifiLegacyHal::selectTxPowerScenario(const std::string& iface_name,
-                                                wifi_power_scenario scenario) {
-    return global_func_table_.wifi_select_tx_power_scenario(
-        getIfaceHandle(iface_name), scenario);
-}
-
-wifi_error WifiLegacyHal::resetTxPowerScenario(const std::string& iface_name) {
-    return global_func_table_.wifi_reset_tx_power_scenario(
-        getIfaceHandle(iface_name));
-}
-
-wifi_error WifiLegacyHal::setLatencyMode(const std::string& iface_name,
-                                         wifi_latency_mode mode) {
-    return global_func_table_.wifi_set_latency_mode(getIfaceHandle(iface_name),
-                                                    mode);
-}
-
-wifi_error WifiLegacyHal::setThermalMitigationMode(wifi_thermal_mode mode,
-                                                   uint32_t completion_window) {
-    return global_func_table_.wifi_set_thermal_mitigation_mode(
-        global_handle_, mode, completion_window);
-}
-
-wifi_error WifiLegacyHal::setDscpToAccessCategoryMapping(
-    uint32_t start, uint32_t end, uint32_t access_category) {
-    return global_func_table_.wifi_map_dscp_access_category(
-        global_handle_, start, end, access_category);
-}
-
-wifi_error WifiLegacyHal::resetDscpToAccessCategoryMapping() {
-    return global_func_table_.wifi_reset_dscp_mapping(global_handle_);
-}
-
-std::pair<wifi_error, uint32_t> WifiLegacyHal::getLoggerSupportedFeatureSet(
-    const std::string& iface_name) {
-    uint32_t supported_feature_flags = 0;
-    wifi_error status = WIFI_SUCCESS;
-
-    wifi_interface_handle iface_handle = getIfaceHandle(iface_name);
-
-    if (iface_handle) {
-        status = global_func_table_.wifi_get_logger_supported_feature_set(
-            iface_handle, &supported_feature_flags);
-    }
-    return {status, supported_feature_flags};
-}
-
-wifi_error WifiLegacyHal::startPktFateMonitoring(
-    const std::string& iface_name) {
-    return global_func_table_.wifi_start_pkt_fate_monitoring(
-        getIfaceHandle(iface_name));
-}
-
-std::pair<wifi_error, std::vector<wifi_tx_report>> WifiLegacyHal::getTxPktFates(
-    const std::string& iface_name) {
-    std::vector<wifi_tx_report> tx_pkt_fates;
-    tx_pkt_fates.resize(MAX_FATE_LOG_LEN);
-    size_t num_fates = 0;
-    wifi_error status = global_func_table_.wifi_get_tx_pkt_fates(
-        getIfaceHandle(iface_name), tx_pkt_fates.data(), tx_pkt_fates.size(),
-        &num_fates);
-    CHECK(num_fates <= MAX_FATE_LOG_LEN);
-    tx_pkt_fates.resize(num_fates);
-    return {status, std::move(tx_pkt_fates)};
-}
-
-std::pair<wifi_error, std::vector<wifi_rx_report>> WifiLegacyHal::getRxPktFates(
-    const std::string& iface_name) {
-    std::vector<wifi_rx_report> rx_pkt_fates;
-    rx_pkt_fates.resize(MAX_FATE_LOG_LEN);
-    size_t num_fates = 0;
-    wifi_error status = global_func_table_.wifi_get_rx_pkt_fates(
-        getIfaceHandle(iface_name), rx_pkt_fates.data(), rx_pkt_fates.size(),
-        &num_fates);
-    CHECK(num_fates <= MAX_FATE_LOG_LEN);
-    rx_pkt_fates.resize(num_fates);
-    return {status, std::move(rx_pkt_fates)};
-}
-
-std::pair<wifi_error, WakeReasonStats> WifiLegacyHal::getWakeReasonStats(
-    const std::string& iface_name) {
-    WakeReasonStats stats;
-    stats.cmd_event_wake_cnt.resize(kMaxWakeReasonStatsArraySize);
-    stats.driver_fw_local_wake_cnt.resize(kMaxWakeReasonStatsArraySize);
-
-    // This legacy struct needs separate memory to store the variable sized wake
-    // reason types.
-    stats.wake_reason_cnt.cmd_event_wake_cnt =
-        reinterpret_cast<int32_t*>(stats.cmd_event_wake_cnt.data());
-    stats.wake_reason_cnt.cmd_event_wake_cnt_sz =
-        stats.cmd_event_wake_cnt.size();
-    stats.wake_reason_cnt.cmd_event_wake_cnt_used = 0;
-    stats.wake_reason_cnt.driver_fw_local_wake_cnt =
-        reinterpret_cast<int32_t*>(stats.driver_fw_local_wake_cnt.data());
-    stats.wake_reason_cnt.driver_fw_local_wake_cnt_sz =
-        stats.driver_fw_local_wake_cnt.size();
-    stats.wake_reason_cnt.driver_fw_local_wake_cnt_used = 0;
-
-    wifi_error status = global_func_table_.wifi_get_wake_reason_stats(
-        getIfaceHandle(iface_name), &stats.wake_reason_cnt);
-
-    CHECK(
-        stats.wake_reason_cnt.cmd_event_wake_cnt_used >= 0 &&
-        static_cast<uint32_t>(stats.wake_reason_cnt.cmd_event_wake_cnt_used) <=
-            kMaxWakeReasonStatsArraySize);
-    stats.cmd_event_wake_cnt.resize(
-        stats.wake_reason_cnt.cmd_event_wake_cnt_used);
-    stats.wake_reason_cnt.cmd_event_wake_cnt = nullptr;
-
-    CHECK(stats.wake_reason_cnt.driver_fw_local_wake_cnt_used >= 0 &&
-          static_cast<uint32_t>(
-              stats.wake_reason_cnt.driver_fw_local_wake_cnt_used) <=
-              kMaxWakeReasonStatsArraySize);
-    stats.driver_fw_local_wake_cnt.resize(
-        stats.wake_reason_cnt.driver_fw_local_wake_cnt_used);
-    stats.wake_reason_cnt.driver_fw_local_wake_cnt = nullptr;
-
-    return {status, stats};
-}
-
-wifi_error WifiLegacyHal::registerRingBufferCallbackHandler(
-    const std::string& iface_name,
-    const on_ring_buffer_data_callback& on_user_data_callback) {
-    if (on_ring_buffer_data_internal_callback) {
-        return WIFI_ERROR_NOT_AVAILABLE;
-    }
-    on_ring_buffer_data_internal_callback =
-        [on_user_data_callback](char* ring_name, char* buffer, int buffer_size,
-                                wifi_ring_buffer_status* status) {
-            if (status && buffer) {
-                std::vector<uint8_t> buffer_vector(
-                    reinterpret_cast<uint8_t*>(buffer),
-                    reinterpret_cast<uint8_t*>(buffer) + buffer_size);
-                on_user_data_callback(ring_name, buffer_vector, *status);
-            }
-        };
-    wifi_error status = global_func_table_.wifi_set_log_handler(
-        0, getIfaceHandle(iface_name), {onAsyncRingBufferData});
-    if (status != WIFI_SUCCESS) {
-        on_ring_buffer_data_internal_callback = nullptr;
-    }
-    return status;
-}
-
-wifi_error WifiLegacyHal::deregisterRingBufferCallbackHandler(
-    const std::string& iface_name) {
-    if (!on_ring_buffer_data_internal_callback) {
-        return WIFI_ERROR_NOT_AVAILABLE;
-    }
-    on_ring_buffer_data_internal_callback = nullptr;
-    return global_func_table_.wifi_reset_log_handler(
-        0, getIfaceHandle(iface_name));
-}
-
-std::pair<wifi_error, std::vector<wifi_ring_buffer_status>>
-WifiLegacyHal::getRingBuffersStatus(const std::string& iface_name) {
-    std::vector<wifi_ring_buffer_status> ring_buffers_status;
-    ring_buffers_status.resize(kMaxRingBuffers);
-    uint32_t num_rings = kMaxRingBuffers;
-    wifi_error status = global_func_table_.wifi_get_ring_buffers_status(
-        getIfaceHandle(iface_name), &num_rings, ring_buffers_status.data());
-    CHECK(num_rings <= kMaxRingBuffers);
-    ring_buffers_status.resize(num_rings);
-    return {status, std::move(ring_buffers_status)};
-}
-
-wifi_error WifiLegacyHal::startRingBufferLogging(const std::string& iface_name,
-                                                 const std::string& ring_name,
-                                                 uint32_t verbose_level,
-                                                 uint32_t max_interval_sec,
-                                                 uint32_t min_data_size) {
-    return global_func_table_.wifi_start_logging(
-        getIfaceHandle(iface_name), verbose_level, 0, max_interval_sec,
-        min_data_size, makeCharVec(ring_name).data());
-}
-
-wifi_error WifiLegacyHal::getRingBufferData(const std::string& iface_name,
-                                            const std::string& ring_name) {
-    return global_func_table_.wifi_get_ring_data(getIfaceHandle(iface_name),
-                                                 makeCharVec(ring_name).data());
-}
-
-wifi_error WifiLegacyHal::registerErrorAlertCallbackHandler(
-    const std::string& iface_name,
-    const on_error_alert_callback& on_user_alert_callback) {
-    if (on_error_alert_internal_callback) {
-        return WIFI_ERROR_NOT_AVAILABLE;
-    }
-    on_error_alert_internal_callback = [on_user_alert_callback](
-                                           wifi_request_id id, char* buffer,
-                                           int buffer_size, int err_code) {
-        if (buffer) {
-            CHECK(id == 0);
-            on_user_alert_callback(
-                err_code,
-                std::vector<uint8_t>(
-                    reinterpret_cast<uint8_t*>(buffer),
-                    reinterpret_cast<uint8_t*>(buffer) + buffer_size));
-        }
-    };
-    wifi_error status = global_func_table_.wifi_set_alert_handler(
-        0, getIfaceHandle(iface_name), {onAsyncErrorAlert});
-    if (status != WIFI_SUCCESS) {
-        on_error_alert_internal_callback = nullptr;
-    }
-    return status;
-}
-
-wifi_error WifiLegacyHal::deregisterErrorAlertCallbackHandler(
-    const std::string& iface_name) {
-    if (!on_error_alert_internal_callback) {
-        return WIFI_ERROR_NOT_AVAILABLE;
-    }
-    on_error_alert_internal_callback = nullptr;
-    return global_func_table_.wifi_reset_alert_handler(
-        0, getIfaceHandle(iface_name));
-}
-
-wifi_error WifiLegacyHal::registerRadioModeChangeCallbackHandler(
-    const std::string& iface_name,
-    const on_radio_mode_change_callback& on_user_change_callback) {
-    if (on_radio_mode_change_internal_callback) {
-        return WIFI_ERROR_NOT_AVAILABLE;
-    }
-    on_radio_mode_change_internal_callback = [on_user_change_callback](
-                                                 wifi_request_id /* id */,
-                                                 uint32_t num_macs,
-                                                 wifi_mac_info* mac_infos_arr) {
-        if (num_macs > 0 && mac_infos_arr) {
-            std::vector<WifiMacInfo> mac_infos_vec;
-            for (uint32_t i = 0; i < num_macs; i++) {
-                WifiMacInfo mac_info;
-                mac_info.wlan_mac_id = mac_infos_arr[i].wlan_mac_id;
-                mac_info.mac_band = mac_infos_arr[i].mac_band;
-                for (int32_t j = 0; j < mac_infos_arr[i].num_iface; j++) {
-                    WifiIfaceInfo iface_info;
-                    iface_info.name = mac_infos_arr[i].iface_info[j].iface_name;
-                    iface_info.channel = mac_infos_arr[i].iface_info[j].channel;
-                    mac_info.iface_infos.push_back(iface_info);
-                }
-                mac_infos_vec.push_back(mac_info);
-            }
-            on_user_change_callback(mac_infos_vec);
-        }
-    };
-    wifi_error status = global_func_table_.wifi_set_radio_mode_change_handler(
-        0, getIfaceHandle(iface_name), {onAsyncRadioModeChange});
-    if (status != WIFI_SUCCESS) {
-        on_radio_mode_change_internal_callback = nullptr;
-    }
-    return status;
-}
-
-wifi_error WifiLegacyHal::registerSubsystemRestartCallbackHandler(
-    const on_subsystem_restart_callback& on_restart_callback) {
-    if (on_subsystem_restart_internal_callback) {
-        return WIFI_ERROR_NOT_AVAILABLE;
-    }
-    on_subsystem_restart_internal_callback =
-        [on_restart_callback](const char* error) {
-            on_restart_callback(error);
-        };
-    wifi_error status = global_func_table_.wifi_set_subsystem_restart_handler(
-        global_handle_, {onAsyncSubsystemRestart});
-    if (status != WIFI_SUCCESS) {
-        on_subsystem_restart_internal_callback = nullptr;
-    }
-    return status;
-}
-
-wifi_error WifiLegacyHal::startRttRangeRequest(
-    const std::string& iface_name, wifi_request_id id,
-    const std::vector<wifi_rtt_config>& rtt_configs,
-    const on_rtt_results_callback& on_results_user_callback) {
-    if (on_rtt_results_internal_callback) {
-        return WIFI_ERROR_NOT_AVAILABLE;
-    }
-
-    on_rtt_results_internal_callback =
-        [on_results_user_callback](wifi_request_id id, unsigned num_results,
-                                   wifi_rtt_result* rtt_results[]) {
-            if (num_results > 0 && !rtt_results) {
-                LOG(ERROR) << "Unexpected nullptr in RTT results";
-                return;
-            }
-            std::vector<const wifi_rtt_result*> rtt_results_vec;
-            std::copy_if(rtt_results, rtt_results + num_results,
-                         back_inserter(rtt_results_vec),
-                         [](wifi_rtt_result* rtt_result) {
-                             return rtt_result != nullptr;
-                         });
-            on_results_user_callback(id, rtt_results_vec);
-        };
-
-    std::vector<wifi_rtt_config> rtt_configs_internal(rtt_configs);
-    wifi_error status = global_func_table_.wifi_rtt_range_request(
-        id, getIfaceHandle(iface_name), rtt_configs.size(),
-        rtt_configs_internal.data(), {onAsyncRttResults});
-    if (status != WIFI_SUCCESS) {
-        on_rtt_results_internal_callback = nullptr;
-    }
-    return status;
-}
-
-wifi_error WifiLegacyHal::cancelRttRangeRequest(
-    const std::string& iface_name, wifi_request_id id,
-    const std::vector<std::array<uint8_t, 6>>& mac_addrs) {
-    if (!on_rtt_results_internal_callback) {
-        return WIFI_ERROR_NOT_AVAILABLE;
-    }
-    static_assert(sizeof(mac_addr) == sizeof(std::array<uint8_t, 6>),
-                  "MAC address size mismatch");
-    // TODO: How do we handle partial cancels (i.e only a subset of enabled mac
-    // addressed are cancelled).
-    std::vector<std::array<uint8_t, 6>> mac_addrs_internal(mac_addrs);
-    wifi_error status = global_func_table_.wifi_rtt_range_cancel(
-        id, getIfaceHandle(iface_name), mac_addrs.size(),
-        reinterpret_cast<mac_addr*>(mac_addrs_internal.data()));
-    // If the request Id is wrong, don't stop the ongoing range request. Any
-    // other error should be treated as the end of rtt ranging.
-    if (status != WIFI_ERROR_INVALID_REQUEST_ID) {
-        on_rtt_results_internal_callback = nullptr;
-    }
-    return status;
-}
-
-std::pair<wifi_error, wifi_rtt_capabilities> WifiLegacyHal::getRttCapabilities(
-    const std::string& iface_name) {
-    wifi_rtt_capabilities rtt_caps;
-    wifi_error status = global_func_table_.wifi_get_rtt_capabilities(
-        getIfaceHandle(iface_name), &rtt_caps);
-    return {status, rtt_caps};
-}
-
-std::pair<wifi_error, wifi_rtt_responder> WifiLegacyHal::getRttResponderInfo(
-    const std::string& iface_name) {
-    wifi_rtt_responder rtt_responder;
-    wifi_error status = global_func_table_.wifi_rtt_get_responder_info(
-        getIfaceHandle(iface_name), &rtt_responder);
-    return {status, rtt_responder};
-}
-
-wifi_error WifiLegacyHal::enableRttResponder(
-    const std::string& iface_name, wifi_request_id id,
-    const wifi_channel_info& channel_hint, uint32_t max_duration_secs,
-    const wifi_rtt_responder& info) {
-    wifi_rtt_responder info_internal(info);
-    return global_func_table_.wifi_enable_responder(
-        id, getIfaceHandle(iface_name), channel_hint, max_duration_secs,
-        &info_internal);
-}
-
-wifi_error WifiLegacyHal::disableRttResponder(const std::string& iface_name,
-                                              wifi_request_id id) {
-    return global_func_table_.wifi_disable_responder(
-        id, getIfaceHandle(iface_name));
-}
-
-wifi_error WifiLegacyHal::setRttLci(const std::string& iface_name,
-                                    wifi_request_id id,
-                                    const wifi_lci_information& info) {
-    wifi_lci_information info_internal(info);
-    return global_func_table_.wifi_set_lci(id, getIfaceHandle(iface_name),
-                                           &info_internal);
-}
-
-wifi_error WifiLegacyHal::setRttLcr(const std::string& iface_name,
-                                    wifi_request_id id,
-                                    const wifi_lcr_information& info) {
-    wifi_lcr_information info_internal(info);
-    return global_func_table_.wifi_set_lcr(id, getIfaceHandle(iface_name),
-                                           &info_internal);
-}
-
-wifi_error WifiLegacyHal::nanRegisterCallbackHandlers(
-    const std::string& iface_name, const NanCallbackHandlers& user_callbacks) {
-    on_nan_notify_response_user_callback = user_callbacks.on_notify_response;
-    on_nan_event_publish_terminated_user_callback =
-        user_callbacks.on_event_publish_terminated;
-    on_nan_event_match_user_callback = user_callbacks.on_event_match;
-    on_nan_event_match_expired_user_callback =
-        user_callbacks.on_event_match_expired;
-    on_nan_event_subscribe_terminated_user_callback =
-        user_callbacks.on_event_subscribe_terminated;
-    on_nan_event_followup_user_callback = user_callbacks.on_event_followup;
-    on_nan_event_disc_eng_event_user_callback =
-        user_callbacks.on_event_disc_eng_event;
-    on_nan_event_disabled_user_callback = user_callbacks.on_event_disabled;
-    on_nan_event_tca_user_callback = user_callbacks.on_event_tca;
-    on_nan_event_beacon_sdf_payload_user_callback =
-        user_callbacks.on_event_beacon_sdf_payload;
-    on_nan_event_data_path_request_user_callback =
-        user_callbacks.on_event_data_path_request;
-    on_nan_event_data_path_confirm_user_callback =
-        user_callbacks.on_event_data_path_confirm;
-    on_nan_event_data_path_end_user_callback =
-        user_callbacks.on_event_data_path_end;
-    on_nan_event_transmit_follow_up_user_callback =
-        user_callbacks.on_event_transmit_follow_up;
-    on_nan_event_range_request_user_callback =
-        user_callbacks.on_event_range_request;
-    on_nan_event_range_report_user_callback =
-        user_callbacks.on_event_range_report;
-    on_nan_event_schedule_update_user_callback =
-        user_callbacks.on_event_schedule_update;
-
-    return global_func_table_.wifi_nan_register_handler(
-        getIfaceHandle(iface_name),
-        {onAysncNanNotifyResponse, onAysncNanEventPublishReplied,
-         onAysncNanEventPublishTerminated, onAysncNanEventMatch,
-         onAysncNanEventMatchExpired, onAysncNanEventSubscribeTerminated,
-         onAysncNanEventFollowup, onAysncNanEventDiscEngEvent,
-         onAysncNanEventDisabled, onAysncNanEventTca,
-         onAysncNanEventBeaconSdfPayload, onAysncNanEventDataPathRequest,
-         onAysncNanEventDataPathConfirm, onAysncNanEventDataPathEnd,
-         onAysncNanEventTransmitFollowUp, onAysncNanEventRangeRequest,
-         onAysncNanEventRangeReport, onAsyncNanEventScheduleUpdate});
-}
-
-wifi_error WifiLegacyHal::nanEnableRequest(const std::string& iface_name,
-                                           transaction_id id,
-                                           const NanEnableRequest& msg) {
-    NanEnableRequest msg_internal(msg);
-    return global_func_table_.wifi_nan_enable_request(
-        id, getIfaceHandle(iface_name), &msg_internal);
-}
-
-wifi_error WifiLegacyHal::nanDisableRequest(const std::string& iface_name,
-                                            transaction_id id) {
-    return global_func_table_.wifi_nan_disable_request(
-        id, getIfaceHandle(iface_name));
-}
-
-wifi_error WifiLegacyHal::nanPublishRequest(const std::string& iface_name,
-                                            transaction_id id,
-                                            const NanPublishRequest& msg) {
-    NanPublishRequest msg_internal(msg);
-    return global_func_table_.wifi_nan_publish_request(
-        id, getIfaceHandle(iface_name), &msg_internal);
-}
-
-wifi_error WifiLegacyHal::nanPublishCancelRequest(
-    const std::string& iface_name, transaction_id id,
-    const NanPublishCancelRequest& msg) {
-    NanPublishCancelRequest msg_internal(msg);
-    return global_func_table_.wifi_nan_publish_cancel_request(
-        id, getIfaceHandle(iface_name), &msg_internal);
-}
-
-wifi_error WifiLegacyHal::nanSubscribeRequest(const std::string& iface_name,
-                                              transaction_id id,
-                                              const NanSubscribeRequest& msg) {
-    NanSubscribeRequest msg_internal(msg);
-    return global_func_table_.wifi_nan_subscribe_request(
-        id, getIfaceHandle(iface_name), &msg_internal);
-}
-
-wifi_error WifiLegacyHal::nanSubscribeCancelRequest(
-    const std::string& iface_name, transaction_id id,
-    const NanSubscribeCancelRequest& msg) {
-    NanSubscribeCancelRequest msg_internal(msg);
-    return global_func_table_.wifi_nan_subscribe_cancel_request(
-        id, getIfaceHandle(iface_name), &msg_internal);
-}
-
-wifi_error WifiLegacyHal::nanTransmitFollowupRequest(
-    const std::string& iface_name, transaction_id id,
-    const NanTransmitFollowupRequest& msg) {
-    NanTransmitFollowupRequest msg_internal(msg);
-    return global_func_table_.wifi_nan_transmit_followup_request(
-        id, getIfaceHandle(iface_name), &msg_internal);
-}
-
-wifi_error WifiLegacyHal::nanStatsRequest(const std::string& iface_name,
-                                          transaction_id id,
-                                          const NanStatsRequest& msg) {
-    NanStatsRequest msg_internal(msg);
-    return global_func_table_.wifi_nan_stats_request(
-        id, getIfaceHandle(iface_name), &msg_internal);
-}
-
-wifi_error WifiLegacyHal::nanConfigRequest(const std::string& iface_name,
-                                           transaction_id id,
-                                           const NanConfigRequest& msg) {
-    NanConfigRequest msg_internal(msg);
-    return global_func_table_.wifi_nan_config_request(
-        id, getIfaceHandle(iface_name), &msg_internal);
-}
-
-wifi_error WifiLegacyHal::nanTcaRequest(const std::string& iface_name,
-                                        transaction_id id,
-                                        const NanTCARequest& msg) {
-    NanTCARequest msg_internal(msg);
-    return global_func_table_.wifi_nan_tca_request(
-        id, getIfaceHandle(iface_name), &msg_internal);
-}
-
-wifi_error WifiLegacyHal::nanBeaconSdfPayloadRequest(
-    const std::string& iface_name, transaction_id id,
-    const NanBeaconSdfPayloadRequest& msg) {
-    NanBeaconSdfPayloadRequest msg_internal(msg);
-    return global_func_table_.wifi_nan_beacon_sdf_payload_request(
-        id, getIfaceHandle(iface_name), &msg_internal);
-}
-
-std::pair<wifi_error, NanVersion> WifiLegacyHal::nanGetVersion() {
-    NanVersion version;
-    wifi_error status =
-        global_func_table_.wifi_nan_get_version(global_handle_, &version);
-    return {status, version};
-}
-
-wifi_error WifiLegacyHal::nanGetCapabilities(const std::string& iface_name,
-                                             transaction_id id) {
-    return global_func_table_.wifi_nan_get_capabilities(
-        id, getIfaceHandle(iface_name));
-}
-
-wifi_error WifiLegacyHal::nanDataInterfaceCreate(
-    const std::string& iface_name, transaction_id id,
-    const std::string& data_iface_name) {
-    return global_func_table_.wifi_nan_data_interface_create(
-        id, getIfaceHandle(iface_name), makeCharVec(data_iface_name).data());
-}
-
-wifi_error WifiLegacyHal::nanDataInterfaceDelete(
-    const std::string& iface_name, transaction_id id,
-    const std::string& data_iface_name) {
-    return global_func_table_.wifi_nan_data_interface_delete(
-        id, getIfaceHandle(iface_name), makeCharVec(data_iface_name).data());
-}
-
-wifi_error WifiLegacyHal::nanDataRequestInitiator(
-    const std::string& iface_name, transaction_id id,
-    const NanDataPathInitiatorRequest& msg) {
-    NanDataPathInitiatorRequest msg_internal(msg);
-    return global_func_table_.wifi_nan_data_request_initiator(
-        id, getIfaceHandle(iface_name), &msg_internal);
-}
-
-wifi_error WifiLegacyHal::nanDataIndicationResponse(
-    const std::string& iface_name, transaction_id id,
-    const NanDataPathIndicationResponse& msg) {
-    NanDataPathIndicationResponse msg_internal(msg);
-    return global_func_table_.wifi_nan_data_indication_response(
-        id, getIfaceHandle(iface_name), &msg_internal);
-}
-
-typedef struct {
-    u8 num_ndp_instances;
-    NanDataPathId ndp_instance_id;
-} NanDataPathEndSingleNdpIdRequest;
-
-wifi_error WifiLegacyHal::nanDataEnd(const std::string& iface_name,
-                                     transaction_id id,
-                                     uint32_t ndpInstanceId) {
-    NanDataPathEndSingleNdpIdRequest msg;
-    msg.num_ndp_instances = 1;
-    msg.ndp_instance_id = ndpInstanceId;
-    wifi_error status = global_func_table_.wifi_nan_data_end(
-        id, getIfaceHandle(iface_name), (NanDataPathEndRequest*)&msg);
-    return status;
-}
-
-wifi_error WifiLegacyHal::setCountryCode(const std::string& iface_name,
-                                         std::array<int8_t, 2> code) {
-    std::string code_str(code.data(), code.data() + code.size());
-    return global_func_table_.wifi_set_country_code(getIfaceHandle(iface_name),
-                                                    code_str.c_str());
-}
-
-wifi_error WifiLegacyHal::retrieveIfaceHandles() {
-    wifi_interface_handle* iface_handles = nullptr;
-    int num_iface_handles = 0;
-    wifi_error status = global_func_table_.wifi_get_ifaces(
-        global_handle_, &num_iface_handles, &iface_handles);
-    if (status != WIFI_SUCCESS) {
-        LOG(ERROR) << "Failed to enumerate interface handles";
-        return status;
-    }
-    iface_name_to_handle_.clear();
-    for (int i = 0; i < num_iface_handles; ++i) {
-        std::array<char, IFNAMSIZ> iface_name_arr = {};
-        status = global_func_table_.wifi_get_iface_name(
-            iface_handles[i], iface_name_arr.data(), iface_name_arr.size());
-        if (status != WIFI_SUCCESS) {
-            LOG(WARNING) << "Failed to get interface handle name";
-            continue;
-        }
-        // Assuming the interface name is null terminated since the legacy HAL
-        // API does not return a size.
-        std::string iface_name(iface_name_arr.data());
-        LOG(INFO) << "Adding interface handle for " << iface_name;
-        iface_name_to_handle_[iface_name] = iface_handles[i];
-    }
-    return WIFI_SUCCESS;
-}
-
-wifi_interface_handle WifiLegacyHal::getIfaceHandle(
-    const std::string& iface_name) {
-    const auto iface_handle_iter = iface_name_to_handle_.find(iface_name);
-    if (iface_handle_iter == iface_name_to_handle_.end()) {
-        LOG(ERROR) << "Unknown iface name: " << iface_name;
-        return nullptr;
-    }
-    return iface_handle_iter->second;
-}
-
-void WifiLegacyHal::runEventLoop() {
-    LOG(DEBUG) << "Starting legacy HAL event loop";
-    global_func_table_.wifi_event_loop(global_handle_);
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (!awaiting_event_loop_termination_) {
-        LOG(FATAL)
-            << "Legacy HAL event loop terminated, but HAL was not stopping";
-    }
-    LOG(DEBUG) << "Legacy HAL event loop terminated";
-    awaiting_event_loop_termination_ = false;
-    stop_wait_cv_.notify_one();
-}
-
-std::pair<wifi_error, std::vector<wifi_cached_scan_results>>
-WifiLegacyHal::getGscanCachedResults(const std::string& iface_name) {
-    std::vector<wifi_cached_scan_results> cached_scan_results;
-    cached_scan_results.resize(kMaxCachedGscanResults);
-    int32_t num_results = 0;
-    wifi_error status = global_func_table_.wifi_get_cached_gscan_results(
-        getIfaceHandle(iface_name), true /* always flush */,
-        cached_scan_results.size(), cached_scan_results.data(), &num_results);
-    CHECK(num_results >= 0 &&
-          static_cast<uint32_t>(num_results) <= kMaxCachedGscanResults);
-    cached_scan_results.resize(num_results);
-    // Check for invalid IE lengths in these cached scan results and correct it.
-    for (auto& cached_scan_result : cached_scan_results) {
-        int num_scan_results = cached_scan_result.num_results;
-        for (int i = 0; i < num_scan_results; i++) {
-            auto& scan_result = cached_scan_result.results[i];
-            if (scan_result.ie_length > 0) {
-                LOG(DEBUG) << "Cached scan result has non-zero IE length "
-                           << scan_result.ie_length;
-                scan_result.ie_length = 0;
-            }
-        }
-    }
-    return {status, std::move(cached_scan_results)};
-}
-
-wifi_error WifiLegacyHal::createVirtualInterface(const std::string& ifname,
-                                                 wifi_interface_type iftype) {
-    // Create the interface if it doesn't exist. If interface already exist,
-    // Vendor Hal should return WIFI_SUCCESS.
-    wifi_error status = global_func_table_.wifi_virtual_interface_create(
-        global_handle_, ifname.c_str(), iftype);
-    return handleVirtualInterfaceCreateOrDeleteStatus(ifname, status);
-}
-
-wifi_error WifiLegacyHal::deleteVirtualInterface(const std::string& ifname) {
-    // Delete the interface if it was created dynamically.
-    wifi_error status = global_func_table_.wifi_virtual_interface_delete(
-        global_handle_, ifname.c_str());
-    return handleVirtualInterfaceCreateOrDeleteStatus(ifname, status);
-}
-
-wifi_error WifiLegacyHal::handleVirtualInterfaceCreateOrDeleteStatus(
-    const std::string& ifname, wifi_error status) {
-    if (status == WIFI_SUCCESS) {
-        // refresh list of handlers now.
-        status = retrieveIfaceHandles();
-    } else if (status == WIFI_ERROR_NOT_SUPPORTED) {
-        // Vendor hal does not implement this API. Such vendor implementations
-        // are expected to create / delete interface by other means.
-
-        // check if interface exists.
-        if (if_nametoindex(ifname.c_str())) {
-            status = retrieveIfaceHandles();
-        }
-    }
-    return status;
-}
-
-wifi_error WifiLegacyHal::getSupportedIfaceName(uint32_t iface_type,
-                                                std::string& ifname) {
-    std::array<char, IFNAMSIZ> buffer;
-
-    wifi_error res = global_func_table_.wifi_get_supported_iface_name(
-        global_handle_, (uint32_t)iface_type, buffer.data(), buffer.size());
-    if (res == WIFI_SUCCESS) ifname = buffer.data();
-
-    return res;
-}
-
-wifi_error WifiLegacyHal::multiStaSetPrimaryConnection(
-    const std::string& ifname) {
-    return global_func_table_.wifi_multi_sta_set_primary_connection(
-        global_handle_, getIfaceHandle(ifname));
-}
-
-wifi_error WifiLegacyHal::multiStaSetUseCase(wifi_multi_sta_use_case use_case) {
-    return global_func_table_.wifi_multi_sta_set_use_case(global_handle_,
-                                                          use_case);
-}
-
-wifi_error WifiLegacyHal::setCoexUnsafeChannels(
-    std::vector<wifi_coex_unsafe_channel> unsafe_channels,
-    uint32_t restrictions) {
-    return global_func_table_.wifi_set_coex_unsafe_channels(
-        global_handle_, unsafe_channels.size(), unsafe_channels.data(),
-        restrictions);
-}
-
-wifi_error WifiLegacyHal::setVoipMode(const std::string& iface_name,
-                                      wifi_voip_mode mode) {
-    return global_func_table_.wifi_set_voip_mode(getIfaceHandle(iface_name),
-                                                 mode);
-}
-
-wifi_error WifiLegacyHal::twtRegisterHandler(
-    const std::string& iface_name, const TwtCallbackHandlers& user_callbacks) {
-    on_twt_event_setup_response_callback = user_callbacks.on_setup_response;
-    on_twt_event_teardown_completion_callback =
-        user_callbacks.on_teardown_completion;
-    on_twt_event_info_frame_received_callback =
-        user_callbacks.on_info_frame_received;
-    on_twt_event_device_notify_callback = user_callbacks.on_device_notify;
-
-    return global_func_table_.wifi_twt_register_handler(
-        getIfaceHandle(iface_name),
-        {onAsyncTwtEventSetupResponse, onAsyncTwtEventTeardownCompletion,
-         onAsyncTwtEventInfoFrameReceived, onAsyncTwtEventDeviceNotify});
-}
-
-std::pair<wifi_error, TwtCapabilitySet> WifiLegacyHal::twtGetCapability(
-    const std::string& iface_name) {
-    TwtCapabilitySet capSet;
-    wifi_error status = global_func_table_.wifi_twt_get_capability(
-        getIfaceHandle(iface_name), &capSet);
-    return {status, capSet};
-}
-
-wifi_error WifiLegacyHal::twtSetupRequest(const std::string& iface_name,
-                                          const TwtSetupRequest& msg) {
-    TwtSetupRequest msgInternal(msg);
-    return global_func_table_.wifi_twt_setup_request(getIfaceHandle(iface_name),
-                                                     &msgInternal);
-}
-
-wifi_error WifiLegacyHal::twtTearDownRequest(const std::string& iface_name,
-                                             const TwtTeardownRequest& msg) {
-    TwtTeardownRequest msgInternal(msg);
-    return global_func_table_.wifi_twt_teardown_request(
-        getIfaceHandle(iface_name), &msgInternal);
-}
-
-wifi_error WifiLegacyHal::twtInfoFrameRequest(const std::string& iface_name,
-                                              const TwtInfoFrameRequest& msg) {
-    TwtInfoFrameRequest msgInternal(msg);
-    return global_func_table_.wifi_twt_info_frame_request(
-        getIfaceHandle(iface_name), &msgInternal);
-}
-
-std::pair<wifi_error, TwtStats> WifiLegacyHal::twtGetStats(
-    const std::string& iface_name, uint8_t configId) {
-    TwtStats stats;
-    wifi_error status = global_func_table_.wifi_twt_get_stats(
-        getIfaceHandle(iface_name), configId, &stats);
-    return {status, stats};
-}
-
-wifi_error WifiLegacyHal::twtClearStats(const std::string& iface_name,
-                                        uint8_t configId) {
-    return global_func_table_.wifi_twt_clear_stats(getIfaceHandle(iface_name),
-                                                   configId);
-}
-
-wifi_error WifiLegacyHal::setDtimConfig(const std::string& iface_name,
-                                        uint32_t multiplier) {
-    return global_func_table_.wifi_set_dtim_config(getIfaceHandle(iface_name),
-                                                   multiplier);
-}
-
-std::pair<wifi_error, std::vector<wifi_usable_channel>>
-WifiLegacyHal::getUsableChannels(uint32_t band_mask, uint32_t iface_mode_mask,
-                                 uint32_t filter_mask) {
-    std::vector<wifi_usable_channel> channels;
-    channels.resize(kMaxWifiUsableChannels);
-    uint32_t size = 0;
-    wifi_error status = global_func_table_.wifi_get_usable_channels(
-        global_handle_, band_mask, iface_mode_mask, filter_mask,
-        channels.size(), &size,
-        reinterpret_cast<wifi_usable_channel*>(channels.data()));
-    CHECK(size >= 0 && size <= kMaxWifiUsableChannels);
-    channels.resize(size);
-    return {status, std::move(channels)};
-}
-
-wifi_error WifiLegacyHal::triggerSubsystemRestart() {
-    return global_func_table_.wifi_trigger_subsystem_restart(global_handle_);
-}
-
-void WifiLegacyHal::invalidate() {
-    global_handle_ = nullptr;
-    iface_name_to_handle_.clear();
-    on_driver_memory_dump_internal_callback = nullptr;
-    on_firmware_memory_dump_internal_callback = nullptr;
-    on_gscan_event_internal_callback = nullptr;
-    on_gscan_full_result_internal_callback = nullptr;
-    on_link_layer_stats_result_internal_callback = nullptr;
-    on_rssi_threshold_breached_internal_callback = nullptr;
-    on_ring_buffer_data_internal_callback = nullptr;
-    on_error_alert_internal_callback = nullptr;
-    on_radio_mode_change_internal_callback = nullptr;
-    on_subsystem_restart_internal_callback = nullptr;
-    on_rtt_results_internal_callback = nullptr;
-    on_nan_notify_response_user_callback = nullptr;
-    on_nan_event_publish_terminated_user_callback = nullptr;
-    on_nan_event_match_user_callback = nullptr;
-    on_nan_event_match_expired_user_callback = nullptr;
-    on_nan_event_subscribe_terminated_user_callback = nullptr;
-    on_nan_event_followup_user_callback = nullptr;
-    on_nan_event_disc_eng_event_user_callback = nullptr;
-    on_nan_event_disabled_user_callback = nullptr;
-    on_nan_event_tca_user_callback = nullptr;
-    on_nan_event_beacon_sdf_payload_user_callback = nullptr;
-    on_nan_event_data_path_request_user_callback = nullptr;
-    on_nan_event_data_path_confirm_user_callback = nullptr;
-    on_nan_event_data_path_end_user_callback = nullptr;
-    on_nan_event_transmit_follow_up_user_callback = nullptr;
-    on_nan_event_range_request_user_callback = nullptr;
-    on_nan_event_range_report_user_callback = nullptr;
-    on_nan_event_schedule_update_user_callback = nullptr;
-    on_twt_event_setup_response_callback = nullptr;
-    on_twt_event_teardown_completion_callback = nullptr;
-    on_twt_event_info_frame_received_callback = nullptr;
-    on_twt_event_device_notify_callback = nullptr;
-}
-
-}  // namespace legacy_hal
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.5/default/wifi_legacy_hal.h b/wifi/1.5/default/wifi_legacy_hal.h
deleted file mode 100644
index 2bb7631..0000000
--- a/wifi/1.5/default/wifi_legacy_hal.h
+++ /dev/null
@@ -1,763 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef WIFI_LEGACY_HAL_H_
-#define WIFI_LEGACY_HAL_H_
-
-#include <condition_variable>
-#include <functional>
-#include <map>
-#include <thread>
-#include <vector>
-
-#include <hardware_legacy/wifi_hal.h>
-#include <wifi_system/interface_tool.h>
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-// This is in a separate namespace to prevent typename conflicts between
-// the legacy HAL types and the HIDL interface types.
-namespace legacy_hal {
-// Import all the types defined inside the legacy HAL header files into this
-// namespace.
-using ::frame_info;
-using ::frame_type;
-using ::FRAME_TYPE_80211_MGMT;
-using ::FRAME_TYPE_ETHERNET_II;
-using ::FRAME_TYPE_UNKNOWN;
-using ::fw_roaming_state_t;
-using ::mac_addr;
-using ::NAN_CHANNEL_24G_BAND;
-using ::NAN_CHANNEL_5G_BAND_HIGH;
-using ::NAN_CHANNEL_5G_BAND_LOW;
-using ::NAN_DISABLE_RANGE_REPORT;
-using ::NAN_DO_NOT_USE_SRF;
-using ::NAN_DP_CHANNEL_NOT_REQUESTED;
-using ::NAN_DP_CONFIG_NO_SECURITY;
-using ::NAN_DP_CONFIG_SECURITY;
-using ::NAN_DP_END;
-using ::NAN_DP_FORCE_CHANNEL_SETUP;
-using ::NAN_DP_INITIATOR_RESPONSE;
-using ::NAN_DP_INTERFACE_CREATE;
-using ::NAN_DP_INTERFACE_DELETE;
-using ::NAN_DP_REQUEST_ACCEPT;
-using ::NAN_DP_REQUEST_CHANNEL_SETUP;
-using ::NAN_DP_REQUEST_REJECT;
-using ::NAN_DP_RESPONDER_RESPONSE;
-using ::NAN_GET_CAPABILITIES;
-using ::NAN_MATCH_ALG_MATCH_CONTINUOUS;
-using ::NAN_MATCH_ALG_MATCH_NEVER;
-using ::NAN_MATCH_ALG_MATCH_ONCE;
-using ::NAN_PUBLISH_TYPE_SOLICITED;
-using ::NAN_PUBLISH_TYPE_UNSOLICITED;
-using ::NAN_PUBLISH_TYPE_UNSOLICITED_SOLICITED;
-using ::NAN_RANGING_AUTO_RESPONSE_DISABLE;
-using ::NAN_RANGING_AUTO_RESPONSE_ENABLE;
-using ::NAN_RANGING_DISABLE;
-using ::NAN_RANGING_ENABLE;
-using ::NAN_RESPONSE_BEACON_SDF_PAYLOAD;
-using ::NAN_RESPONSE_CONFIG;
-using ::NAN_RESPONSE_DISABLED;
-using ::NAN_RESPONSE_ENABLED;
-using ::NAN_RESPONSE_ERROR;
-using ::NAN_RESPONSE_PUBLISH;
-using ::NAN_RESPONSE_PUBLISH_CANCEL;
-using ::NAN_RESPONSE_STATS;
-using ::NAN_RESPONSE_SUBSCRIBE;
-using ::NAN_RESPONSE_SUBSCRIBE_CANCEL;
-using ::NAN_RESPONSE_TCA;
-using ::NAN_RESPONSE_TRANSMIT_FOLLOWUP;
-using ::NAN_SECURITY_KEY_INPUT_PASSPHRASE;
-using ::NAN_SECURITY_KEY_INPUT_PMK;
-using ::NAN_SERVICE_ACCEPT_POLICY_ALL;
-using ::NAN_SERVICE_ACCEPT_POLICY_NONE;
-using ::NAN_SRF_ATTR_BLOOM_FILTER;
-using ::NAN_SRF_ATTR_PARTIAL_MAC_ADDR;
-using ::NAN_SRF_INCLUDE_DO_NOT_RESPOND;
-using ::NAN_SRF_INCLUDE_RESPOND;
-using ::NAN_SSI_NOT_REQUIRED_IN_MATCH_IND;
-using ::NAN_SSI_REQUIRED_IN_MATCH_IND;
-using ::NAN_STATUS_ALREADY_ENABLED;
-using ::NAN_STATUS_FOLLOWUP_QUEUE_FULL;
-using ::NAN_STATUS_INTERNAL_FAILURE;
-using ::NAN_STATUS_INVALID_NDP_ID;
-using ::NAN_STATUS_INVALID_PARAM;
-using ::NAN_STATUS_INVALID_PUBLISH_SUBSCRIBE_ID;
-using ::NAN_STATUS_INVALID_REQUESTOR_INSTANCE_ID;
-using ::NAN_STATUS_NAN_NOT_ALLOWED;
-using ::NAN_STATUS_NO_OTA_ACK;
-using ::NAN_STATUS_NO_RESOURCE_AVAILABLE;
-using ::NAN_STATUS_PROTOCOL_FAILURE;
-using ::NAN_STATUS_SUCCESS;
-using ::NAN_STATUS_UNSUPPORTED_CONCURRENCY_NAN_DISABLED;
-using ::NAN_SUBSCRIBE_TYPE_ACTIVE;
-using ::NAN_SUBSCRIBE_TYPE_PASSIVE;
-using ::NAN_TRANSMIT_IN_DW;
-using ::NAN_TRANSMIT_IN_FAW;
-using ::NAN_TX_PRIORITY_HIGH;
-using ::NAN_TX_PRIORITY_NORMAL;
-using ::NAN_TX_TYPE_BROADCAST;
-using ::NAN_TX_TYPE_UNICAST;
-using ::NAN_USE_SRF;
-using ::NanBeaconSdfPayloadInd;
-using ::NanCapabilities;
-using ::NanChannelInfo;
-using ::NanConfigRequest;
-using ::NanDataPathChannelCfg;
-using ::NanDataPathConfirmInd;
-using ::NanDataPathEndInd;
-using ::NanDataPathIndicationResponse;
-using ::NanDataPathInitiatorRequest;
-using ::NanDataPathRequestInd;
-using ::NanDataPathScheduleUpdateInd;
-using ::NanDisabledInd;
-using ::NanDiscEngEventInd;
-using ::NanEnableRequest;
-using ::NanFollowupInd;
-using ::NanMatchAlg;
-using ::NanMatchExpiredInd;
-using ::NanMatchInd;
-using ::NanPublishCancelRequest;
-using ::NanPublishRequest;
-using ::NanPublishTerminatedInd;
-using ::NanPublishType;
-using ::NanRangeReportInd;
-using ::NanRangeRequestInd;
-using ::NanResponseMsg;
-using ::NanSRFType;
-using ::NanStatusType;
-using ::NanSubscribeCancelRequest;
-using ::NanSubscribeRequest;
-using ::NanSubscribeTerminatedInd;
-using ::NanSubscribeType;
-using ::NanTransmitFollowupInd;
-using ::NanTransmitFollowupRequest;
-using ::NanTxType;
-using ::ROAMING_DISABLE;
-using ::ROAMING_ENABLE;
-using ::RTT_PEER_AP;
-using ::RTT_PEER_NAN;
-using ::RTT_PEER_P2P_CLIENT;
-using ::RTT_PEER_P2P_GO;
-using ::RTT_PEER_STA;
-using ::rtt_peer_type;
-using ::RTT_STATUS_ABORTED;
-using ::RTT_STATUS_FAIL_AP_ON_DIFF_CHANNEL;
-using ::RTT_STATUS_FAIL_BUSY_TRY_LATER;
-using ::RTT_STATUS_FAIL_FTM_PARAM_OVERRIDE;
-using ::RTT_STATUS_FAIL_INVALID_TS;
-using ::RTT_STATUS_FAIL_NO_CAPABILITY;
-using ::RTT_STATUS_FAIL_NO_RSP;
-using ::RTT_STATUS_FAIL_NOT_SCHEDULED_YET;
-using ::RTT_STATUS_FAIL_PROTOCOL;
-using ::RTT_STATUS_FAIL_REJECTED;
-using ::RTT_STATUS_FAIL_SCHEDULE;
-using ::RTT_STATUS_FAIL_TM_TIMEOUT;
-using ::RTT_STATUS_FAILURE;
-using ::RTT_STATUS_INVALID_REQ;
-using ::RTT_STATUS_NAN_RANGING_CONCURRENCY_NOT_SUPPORTED;
-using ::RTT_STATUS_NAN_RANGING_PROTOCOL_FAILURE;
-using ::RTT_STATUS_NO_WIFI;
-using ::RTT_STATUS_SUCCESS;
-using ::RTT_TYPE_1_SIDED;
-using ::RTT_TYPE_2_SIDED;
-using ::RX_PKT_FATE_DRV_DROP_FILTER;
-using ::RX_PKT_FATE_DRV_DROP_INVALID;
-using ::RX_PKT_FATE_DRV_DROP_NOBUFS;
-using ::RX_PKT_FATE_DRV_DROP_OTHER;
-using ::RX_PKT_FATE_DRV_QUEUED;
-using ::RX_PKT_FATE_FW_DROP_FILTER;
-using ::RX_PKT_FATE_FW_DROP_INVALID;
-using ::RX_PKT_FATE_FW_DROP_NOBUFS;
-using ::RX_PKT_FATE_FW_DROP_OTHER;
-using ::RX_PKT_FATE_FW_QUEUED;
-using ::RX_PKT_FATE_SUCCESS;
-using ::ssid_t;
-using ::transaction_id;
-using ::TX_PKT_FATE_ACKED;
-using ::TX_PKT_FATE_DRV_DROP_INVALID;
-using ::TX_PKT_FATE_DRV_DROP_NOBUFS;
-using ::TX_PKT_FATE_DRV_DROP_OTHER;
-using ::TX_PKT_FATE_DRV_QUEUED;
-using ::TX_PKT_FATE_FW_DROP_INVALID;
-using ::TX_PKT_FATE_FW_DROP_NOBUFS;
-using ::TX_PKT_FATE_FW_DROP_OTHER;
-using ::TX_PKT_FATE_FW_QUEUED;
-using ::TX_PKT_FATE_SENT;
-using ::WIFI_AC_BE;
-using ::WIFI_AC_BK;
-using ::WIFI_AC_VI;
-using ::WIFI_AC_VO;
-using ::wifi_band;
-using ::WIFI_BAND_A;
-using ::WIFI_BAND_A_DFS;
-using ::WIFI_BAND_A_WITH_DFS;
-using ::WIFI_BAND_ABG;
-using ::WIFI_BAND_ABG_WITH_DFS;
-using ::WIFI_BAND_BG;
-using ::WIFI_BAND_UNSPECIFIED;
-using ::wifi_cached_scan_results;
-using ::WIFI_CHAN_WIDTH_10;
-using ::WIFI_CHAN_WIDTH_160;
-using ::WIFI_CHAN_WIDTH_20;
-using ::WIFI_CHAN_WIDTH_40;
-using ::WIFI_CHAN_WIDTH_5;
-using ::WIFI_CHAN_WIDTH_80;
-using ::WIFI_CHAN_WIDTH_80P80;
-using ::WIFI_CHAN_WIDTH_INVALID;
-using ::wifi_channel_info;
-using ::wifi_channel_stat;
-using ::wifi_channel_width;
-using ::wifi_coex_restriction;
-using ::wifi_coex_unsafe_channel;
-using ::WIFI_DUAL_STA_NON_TRANSIENT_UNBIASED;
-using ::WIFI_DUAL_STA_TRANSIENT_PREFER_PRIMARY;
-using ::wifi_error;
-using ::WIFI_ERROR_BUSY;
-using ::WIFI_ERROR_INVALID_ARGS;
-using ::WIFI_ERROR_INVALID_REQUEST_ID;
-using ::WIFI_ERROR_NONE;
-using ::WIFI_ERROR_NOT_AVAILABLE;
-using ::WIFI_ERROR_NOT_SUPPORTED;
-using ::WIFI_ERROR_OUT_OF_MEMORY;
-using ::WIFI_ERROR_TIMED_OUT;
-using ::WIFI_ERROR_TOO_MANY_REQUESTS;
-using ::WIFI_ERROR_UNINITIALIZED;
-using ::WIFI_ERROR_UNKNOWN;
-using ::wifi_gscan_capabilities;
-using ::wifi_hal_fn;
-using ::wifi_information_element;
-using ::WIFI_INTERFACE_IBSS;
-using ::WIFI_INTERFACE_MESH;
-using ::wifi_interface_mode;
-using ::WIFI_INTERFACE_NAN;
-using ::WIFI_INTERFACE_P2P_CLIENT;
-using ::WIFI_INTERFACE_P2P_GO;
-using ::WIFI_INTERFACE_SOFTAP;
-using ::WIFI_INTERFACE_STA;
-using ::WIFI_INTERFACE_TDLS;
-using ::wifi_interface_type;
-using ::WIFI_INTERFACE_TYPE_AP;
-using ::WIFI_INTERFACE_TYPE_NAN;
-using ::WIFI_INTERFACE_TYPE_P2P;
-using ::WIFI_INTERFACE_TYPE_STA;
-using ::WIFI_INTERFACE_UNKNOWN;
-using ::wifi_latency_mode;
-using ::WIFI_LATENCY_MODE_LOW;
-using ::WIFI_LATENCY_MODE_NORMAL;
-using ::wifi_lci_information;
-using ::wifi_lcr_information;
-using ::WIFI_LOGGER_CONNECT_EVENT_SUPPORTED;
-using ::WIFI_LOGGER_DRIVER_DUMP_SUPPORTED;
-using ::WIFI_LOGGER_MEMORY_DUMP_SUPPORTED;
-using ::WIFI_LOGGER_PACKET_FATE_SUPPORTED;
-using ::WIFI_LOGGER_POWER_EVENT_SUPPORTED;
-using ::WIFI_LOGGER_WAKE_LOCK_SUPPORTED;
-using ::WIFI_MOTION_EXPECTED;
-using ::WIFI_MOTION_NOT_EXPECTED;
-using ::wifi_motion_pattern;
-using ::WIFI_MOTION_UNKNOWN;
-using ::wifi_multi_sta_use_case;
-using ::wifi_power_scenario;
-using ::WIFI_POWER_SCENARIO_ON_BODY_CELL_OFF;
-using ::WIFI_POWER_SCENARIO_ON_BODY_CELL_ON;
-using ::WIFI_POWER_SCENARIO_ON_HEAD_CELL_OFF;
-using ::WIFI_POWER_SCENARIO_ON_HEAD_CELL_ON;
-using ::WIFI_POWER_SCENARIO_VOICE_CALL;
-using ::wifi_rate;
-using ::wifi_request_id;
-using ::wifi_ring_buffer_status;
-using ::wifi_roaming_capabilities;
-using ::wifi_roaming_config;
-using ::wifi_rtt_bw;
-using ::WIFI_RTT_BW_10;
-using ::WIFI_RTT_BW_160;
-using ::WIFI_RTT_BW_20;
-using ::WIFI_RTT_BW_40;
-using ::WIFI_RTT_BW_5;
-using ::WIFI_RTT_BW_80;
-using ::wifi_rtt_capabilities;
-using ::wifi_rtt_config;
-using ::wifi_rtt_preamble;
-using ::WIFI_RTT_PREAMBLE_HE;
-using ::WIFI_RTT_PREAMBLE_HT;
-using ::WIFI_RTT_PREAMBLE_LEGACY;
-using ::WIFI_RTT_PREAMBLE_VHT;
-using ::wifi_rtt_responder;
-using ::wifi_rtt_result;
-using ::wifi_rtt_status;
-using ::wifi_rtt_type;
-using ::wifi_rx_packet_fate;
-using ::wifi_rx_report;
-using ::wifi_scan_bucket_spec;
-using ::wifi_scan_cmd_params;
-using ::WIFI_SCAN_FLAG_INTERRUPTED;
-using ::wifi_scan_result;
-using ::WIFI_SUCCESS;
-using ::wifi_tx_packet_fate;
-using ::wifi_tx_report;
-using ::wifi_usable_channel;
-using ::WIFI_USABLE_CHANNEL_FILTER_CELLULAR_COEXISTENCE;
-using ::WIFI_USABLE_CHANNEL_FILTER_CONCURRENCY;
-using ::WLAN_MAC_2_4_BAND;
-using ::WLAN_MAC_5_0_BAND;
-using ::WLAN_MAC_60_0_BAND;
-using ::WLAN_MAC_6_0_BAND;
-
-// APF capabilities supported by the iface.
-struct PacketFilterCapabilities {
-    uint32_t version;
-    uint32_t max_len;
-};
-
-// WARNING: We don't care about the variable sized members of either
-// |wifi_iface_stat|, |wifi_radio_stat| structures. So, using the pragma
-// to escape the compiler warnings regarding this.
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wgnu-variable-sized-type-not-at-end"
-// The |wifi_radio_stat.tx_time_per_levels| stats is provided as a pointer in
-// |wifi_radio_stat| structure in the legacy HAL API. Separate that out
-// into a separate return element to avoid passing pointers around.
-struct LinkLayerRadioStats {
-    wifi_radio_stat stats;
-    std::vector<uint32_t> tx_time_per_levels;
-    std::vector<wifi_channel_stat> channel_stats;
-};
-
-struct WifiPeerInfo {
-    wifi_peer_info peer_info;
-    std::vector<wifi_rate_stat> rate_stats;
-};
-
-struct LinkLayerStats {
-    wifi_iface_stat iface;
-    std::vector<LinkLayerRadioStats> radios;
-    std::vector<WifiPeerInfo> peers;
-};
-#pragma GCC diagnostic pop
-
-// The |WLAN_DRIVER_WAKE_REASON_CNT.cmd_event_wake_cnt| and
-// |WLAN_DRIVER_WAKE_REASON_CNT.driver_fw_local_wake_cnt| stats is provided
-// as a pointer in |WLAN_DRIVER_WAKE_REASON_CNT| structure in the legacy HAL
-// API. Separate that out into a separate return elements to avoid passing
-// pointers around.
-struct WakeReasonStats {
-    WLAN_DRIVER_WAKE_REASON_CNT wake_reason_cnt;
-    std::vector<uint32_t> cmd_event_wake_cnt;
-    std::vector<uint32_t> driver_fw_local_wake_cnt;
-};
-
-// NAN response and event callbacks struct.
-struct NanCallbackHandlers {
-    // NotifyResponse invoked to notify the status of the Request.
-    std::function<void(transaction_id, const NanResponseMsg&)>
-        on_notify_response;
-    // Various event callbacks.
-    std::function<void(const NanPublishTerminatedInd&)>
-        on_event_publish_terminated;
-    std::function<void(const NanMatchInd&)> on_event_match;
-    std::function<void(const NanMatchExpiredInd&)> on_event_match_expired;
-    std::function<void(const NanSubscribeTerminatedInd&)>
-        on_event_subscribe_terminated;
-    std::function<void(const NanFollowupInd&)> on_event_followup;
-    std::function<void(const NanDiscEngEventInd&)> on_event_disc_eng_event;
-    std::function<void(const NanDisabledInd&)> on_event_disabled;
-    std::function<void(const NanTCAInd&)> on_event_tca;
-    std::function<void(const NanBeaconSdfPayloadInd&)>
-        on_event_beacon_sdf_payload;
-    std::function<void(const NanDataPathRequestInd&)>
-        on_event_data_path_request;
-    std::function<void(const NanDataPathConfirmInd&)>
-        on_event_data_path_confirm;
-    std::function<void(const NanDataPathEndInd&)> on_event_data_path_end;
-    std::function<void(const NanTransmitFollowupInd&)>
-        on_event_transmit_follow_up;
-    std::function<void(const NanRangeRequestInd&)> on_event_range_request;
-    std::function<void(const NanRangeReportInd&)> on_event_range_report;
-    std::function<void(const NanDataPathScheduleUpdateInd&)>
-        on_event_schedule_update;
-};
-
-// Full scan results contain IE info and are hence passed by reference, to
-// preserve the variable length array member |ie_data|. Callee must not retain
-// the pointer.
-using on_gscan_full_result_callback =
-    std::function<void(wifi_request_id, const wifi_scan_result*, uint32_t)>;
-// These scan results don't contain any IE info, so no need to pass by
-// reference.
-using on_gscan_results_callback = std::function<void(
-    wifi_request_id, const std::vector<wifi_cached_scan_results>&)>;
-
-// Invoked when the rssi value breaches the thresholds set.
-using on_rssi_threshold_breached_callback =
-    std::function<void(wifi_request_id, std::array<uint8_t, 6>, int8_t)>;
-
-// Callback for RTT range request results.
-// Rtt results contain IE info and are hence passed by reference, to
-// preserve the |LCI| and |LCR| pointers. Callee must not retain
-// the pointer.
-using on_rtt_results_callback = std::function<void(
-    wifi_request_id, const std::vector<const wifi_rtt_result*>&)>;
-
-// Callback for ring buffer data.
-using on_ring_buffer_data_callback =
-    std::function<void(const std::string&, const std::vector<uint8_t>&,
-                       const wifi_ring_buffer_status&)>;
-
-// Callback for alerts.
-using on_error_alert_callback =
-    std::function<void(int32_t, const std::vector<uint8_t>&)>;
-
-// Callback for subsystem restart
-using on_subsystem_restart_callback = std::function<void(const std::string&)>;
-
-// Struct for the mac info from the legacy HAL. This is a cleaner version
-// of the |wifi_mac_info| & |wifi_iface_info|.
-typedef struct {
-    std::string name;
-    wifi_channel channel;
-} WifiIfaceInfo;
-
-typedef struct {
-    uint32_t wlan_mac_id;
-    /* BIT MASK of BIT(WLAN_MAC*) as represented by wlan_mac_band */
-    uint32_t mac_band;
-    /* Represents the connected Wi-Fi interfaces associated with each MAC */
-    std::vector<WifiIfaceInfo> iface_infos;
-} WifiMacInfo;
-
-// Callback for radio mode change
-using on_radio_mode_change_callback =
-    std::function<void(const std::vector<WifiMacInfo>&)>;
-
-// TWT response and event callbacks struct.
-struct TwtCallbackHandlers {
-    // Callback for TWT setup response
-    std::function<void(const TwtSetupResponse&)> on_setup_response;
-    // Callback for TWT teardown completion
-    std::function<void(const TwtTeardownCompletion&)> on_teardown_completion;
-    // Callback for TWT info frame received event
-    std::function<void(const TwtInfoFrameReceived&)> on_info_frame_received;
-    // Callback for TWT notification from the device
-    std::function<void(const TwtDeviceNotify&)> on_device_notify;
-};
-
-/**
- * Class that encapsulates all legacy HAL interactions.
- * This class manages the lifetime of the event loop thread used by legacy HAL.
- *
- * Note: There will only be a single instance of this class created in the Wifi
- * object and will be valid for the lifetime of the process.
- */
-class WifiLegacyHal {
-   public:
-    WifiLegacyHal(const std::weak_ptr<wifi_system::InterfaceTool> iface_tool,
-                  const wifi_hal_fn& fn, bool is_primary);
-    virtual ~WifiLegacyHal() = default;
-
-    // Initialize the legacy HAL function table.
-    virtual wifi_error initialize();
-    // Start the legacy HAL and the event looper thread.
-    virtual wifi_error start();
-    // Deinitialize the legacy HAL and wait for the event loop thread to exit
-    // using a predefined timeout.
-    virtual wifi_error stop(std::unique_lock<std::recursive_mutex>* lock,
-                            const std::function<void()>& on_complete_callback);
-    virtual wifi_error waitForDriverReady();
-    // Checks if legacy HAL has successfully started
-    bool isStarted();
-    // Wrappers for all the functions in the legacy HAL function table.
-    virtual std::pair<wifi_error, std::string> getDriverVersion(
-        const std::string& iface_name);
-    virtual std::pair<wifi_error, std::string> getFirmwareVersion(
-        const std::string& iface_name);
-    std::pair<wifi_error, std::vector<uint8_t>> requestDriverMemoryDump(
-        const std::string& iface_name);
-    std::pair<wifi_error, std::vector<uint8_t>> requestFirmwareMemoryDump(
-        const std::string& iface_name);
-    std::pair<wifi_error, uint64_t> getSupportedFeatureSet(
-        const std::string& iface_name);
-    // APF functions.
-    std::pair<wifi_error, PacketFilterCapabilities> getPacketFilterCapabilities(
-        const std::string& iface_name);
-    wifi_error setPacketFilter(const std::string& iface_name,
-                               const std::vector<uint8_t>& program);
-    std::pair<wifi_error, std::vector<uint8_t>> readApfPacketFilterData(
-        const std::string& iface_name);
-    // Gscan functions.
-    std::pair<wifi_error, wifi_gscan_capabilities> getGscanCapabilities(
-        const std::string& iface_name);
-    // These API's provides a simplified interface over the legacy Gscan API's:
-    // a) All scan events from the legacy HAL API other than the
-    //    |WIFI_SCAN_FAILED| are treated as notification of results.
-    //    This method then retrieves the cached scan results from the legacy
-    //    HAL API and triggers the externally provided
-    //    |on_results_user_callback| on success.
-    // b) |WIFI_SCAN_FAILED| scan event or failure to retrieve cached scan
-    // results
-    //    triggers the externally provided |on_failure_user_callback|.
-    // c) Full scan result event triggers the externally provided
-    //    |on_full_result_user_callback|.
-    wifi_error startGscan(
-        const std::string& iface_name, wifi_request_id id,
-        const wifi_scan_cmd_params& params,
-        const std::function<void(wifi_request_id)>& on_failure_callback,
-        const on_gscan_results_callback& on_results_callback,
-        const on_gscan_full_result_callback& on_full_result_callback);
-    wifi_error stopGscan(const std::string& iface_name, wifi_request_id id);
-    std::pair<wifi_error, std::vector<uint32_t>> getValidFrequenciesForBand(
-        const std::string& iface_name, wifi_band band);
-    virtual wifi_error setDfsFlag(const std::string& iface_name, bool dfs_on);
-    // Link layer stats functions.
-    wifi_error enableLinkLayerStats(const std::string& iface_name, bool debug);
-    wifi_error disableLinkLayerStats(const std::string& iface_name);
-    std::pair<wifi_error, LinkLayerStats> getLinkLayerStats(
-        const std::string& iface_name);
-    // RSSI monitor functions.
-    wifi_error startRssiMonitoring(const std::string& iface_name,
-                                   wifi_request_id id, int8_t max_rssi,
-                                   int8_t min_rssi,
-                                   const on_rssi_threshold_breached_callback&
-                                       on_threshold_breached_callback);
-    wifi_error stopRssiMonitoring(const std::string& iface_name,
-                                  wifi_request_id id);
-    std::pair<wifi_error, wifi_roaming_capabilities> getRoamingCapabilities(
-        const std::string& iface_name);
-    wifi_error configureRoaming(const std::string& iface_name,
-                                const wifi_roaming_config& config);
-    wifi_error enableFirmwareRoaming(const std::string& iface_name,
-                                     fw_roaming_state_t state);
-    wifi_error configureNdOffload(const std::string& iface_name, bool enable);
-    wifi_error startSendingOffloadedPacket(
-        const std::string& iface_name, uint32_t cmd_id, uint16_t ether_type,
-        const std::vector<uint8_t>& ip_packet_data,
-        const std::array<uint8_t, 6>& src_address,
-        const std::array<uint8_t, 6>& dst_address, uint32_t period_in_ms);
-    wifi_error stopSendingOffloadedPacket(const std::string& iface_name,
-                                          uint32_t cmd_id);
-    virtual wifi_error selectTxPowerScenario(const std::string& iface_name,
-                                             wifi_power_scenario scenario);
-    virtual wifi_error resetTxPowerScenario(const std::string& iface_name);
-    wifi_error setLatencyMode(const std::string& iface_name,
-                              wifi_latency_mode mode);
-    wifi_error setThermalMitigationMode(wifi_thermal_mode mode,
-                                        uint32_t completion_window);
-    wifi_error setDscpToAccessCategoryMapping(uint32_t start, uint32_t end,
-                                              uint32_t access_category);
-    wifi_error resetDscpToAccessCategoryMapping();
-    // Logger/debug functions.
-    std::pair<wifi_error, uint32_t> getLoggerSupportedFeatureSet(
-        const std::string& iface_name);
-    wifi_error startPktFateMonitoring(const std::string& iface_name);
-    std::pair<wifi_error, std::vector<wifi_tx_report>> getTxPktFates(
-        const std::string& iface_name);
-    std::pair<wifi_error, std::vector<wifi_rx_report>> getRxPktFates(
-        const std::string& iface_name);
-    std::pair<wifi_error, WakeReasonStats> getWakeReasonStats(
-        const std::string& iface_name);
-    wifi_error registerRingBufferCallbackHandler(
-        const std::string& iface_name,
-        const on_ring_buffer_data_callback& on_data_callback);
-    wifi_error deregisterRingBufferCallbackHandler(
-        const std::string& iface_name);
-    wifi_error registerSubsystemRestartCallbackHandler(
-        const on_subsystem_restart_callback& on_restart_callback);
-    std::pair<wifi_error, std::vector<wifi_ring_buffer_status>>
-    getRingBuffersStatus(const std::string& iface_name);
-    wifi_error startRingBufferLogging(const std::string& iface_name,
-                                      const std::string& ring_name,
-                                      uint32_t verbose_level,
-                                      uint32_t max_interval_sec,
-                                      uint32_t min_data_size);
-    wifi_error getRingBufferData(const std::string& iface_name,
-                                 const std::string& ring_name);
-    wifi_error registerErrorAlertCallbackHandler(
-        const std::string& iface_name,
-        const on_error_alert_callback& on_alert_callback);
-    wifi_error deregisterErrorAlertCallbackHandler(
-        const std::string& iface_name);
-    // Radio mode functions.
-    virtual wifi_error registerRadioModeChangeCallbackHandler(
-        const std::string& iface_name,
-        const on_radio_mode_change_callback& on_user_change_callback);
-    // RTT functions.
-    wifi_error startRttRangeRequest(
-        const std::string& iface_name, wifi_request_id id,
-        const std::vector<wifi_rtt_config>& rtt_configs,
-        const on_rtt_results_callback& on_results_callback);
-    wifi_error cancelRttRangeRequest(
-        const std::string& iface_name, wifi_request_id id,
-        const std::vector<std::array<uint8_t, 6>>& mac_addrs);
-    std::pair<wifi_error, wifi_rtt_capabilities> getRttCapabilities(
-        const std::string& iface_name);
-    std::pair<wifi_error, wifi_rtt_responder> getRttResponderInfo(
-        const std::string& iface_name);
-    wifi_error enableRttResponder(const std::string& iface_name,
-                                  wifi_request_id id,
-                                  const wifi_channel_info& channel_hint,
-                                  uint32_t max_duration_secs,
-                                  const wifi_rtt_responder& info);
-    wifi_error disableRttResponder(const std::string& iface_name,
-                                   wifi_request_id id);
-    wifi_error setRttLci(const std::string& iface_name, wifi_request_id id,
-                         const wifi_lci_information& info);
-    wifi_error setRttLcr(const std::string& iface_name, wifi_request_id id,
-                         const wifi_lcr_information& info);
-    // NAN functions.
-    virtual wifi_error nanRegisterCallbackHandlers(
-        const std::string& iface_name, const NanCallbackHandlers& callbacks);
-    wifi_error nanEnableRequest(const std::string& iface_name,
-                                transaction_id id, const NanEnableRequest& msg);
-    virtual wifi_error nanDisableRequest(const std::string& iface_name,
-                                         transaction_id id);
-    wifi_error nanPublishRequest(const std::string& iface_name,
-                                 transaction_id id,
-                                 const NanPublishRequest& msg);
-    wifi_error nanPublishCancelRequest(const std::string& iface_name,
-                                       transaction_id id,
-                                       const NanPublishCancelRequest& msg);
-    wifi_error nanSubscribeRequest(const std::string& iface_name,
-                                   transaction_id id,
-                                   const NanSubscribeRequest& msg);
-    wifi_error nanSubscribeCancelRequest(const std::string& iface_name,
-                                         transaction_id id,
-                                         const NanSubscribeCancelRequest& msg);
-    wifi_error nanTransmitFollowupRequest(
-        const std::string& iface_name, transaction_id id,
-        const NanTransmitFollowupRequest& msg);
-    wifi_error nanStatsRequest(const std::string& iface_name, transaction_id id,
-                               const NanStatsRequest& msg);
-    wifi_error nanConfigRequest(const std::string& iface_name,
-                                transaction_id id, const NanConfigRequest& msg);
-    wifi_error nanTcaRequest(const std::string& iface_name, transaction_id id,
-                             const NanTCARequest& msg);
-    wifi_error nanBeaconSdfPayloadRequest(
-        const std::string& iface_name, transaction_id id,
-        const NanBeaconSdfPayloadRequest& msg);
-    std::pair<wifi_error, NanVersion> nanGetVersion();
-    wifi_error nanGetCapabilities(const std::string& iface_name,
-                                  transaction_id id);
-    wifi_error nanDataInterfaceCreate(const std::string& iface_name,
-                                      transaction_id id,
-                                      const std::string& data_iface_name);
-    virtual wifi_error nanDataInterfaceDelete(
-        const std::string& iface_name, transaction_id id,
-        const std::string& data_iface_name);
-    wifi_error nanDataRequestInitiator(const std::string& iface_name,
-                                       transaction_id id,
-                                       const NanDataPathInitiatorRequest& msg);
-    wifi_error nanDataIndicationResponse(
-        const std::string& iface_name, transaction_id id,
-        const NanDataPathIndicationResponse& msg);
-    wifi_error nanDataEnd(const std::string& iface_name, transaction_id id,
-                          uint32_t ndpInstanceId);
-    // AP functions.
-    wifi_error setCountryCode(const std::string& iface_name,
-                              std::array<int8_t, 2> code);
-
-    // interface functions.
-    virtual wifi_error createVirtualInterface(const std::string& ifname,
-                                              wifi_interface_type iftype);
-    virtual wifi_error deleteVirtualInterface(const std::string& ifname);
-    wifi_error getSupportedIfaceName(uint32_t iface_type, std::string& ifname);
-
-    // STA + STA functions
-    virtual wifi_error multiStaSetPrimaryConnection(const std::string& ifname);
-    virtual wifi_error multiStaSetUseCase(wifi_multi_sta_use_case use_case);
-
-    // Coex functions.
-    virtual wifi_error setCoexUnsafeChannels(
-        std::vector<wifi_coex_unsafe_channel> unsafe_channels,
-        uint32_t restrictions);
-
-    wifi_error setVoipMode(const std::string& iface_name, wifi_voip_mode mode);
-
-    wifi_error twtRegisterHandler(const std::string& iface_name,
-                                  const TwtCallbackHandlers& handler);
-
-    std::pair<wifi_error, TwtCapabilitySet> twtGetCapability(
-        const std::string& iface_name);
-
-    wifi_error twtSetupRequest(const std::string& iface_name,
-                               const TwtSetupRequest& msg);
-
-    wifi_error twtTearDownRequest(const std::string& iface_name,
-                                  const TwtTeardownRequest& msg);
-
-    wifi_error twtInfoFrameRequest(const std::string& iface_name,
-                                   const TwtInfoFrameRequest& msg);
-
-    std::pair<wifi_error, TwtStats> twtGetStats(const std::string& iface_name,
-                                                uint8_t configId);
-
-    wifi_error twtClearStats(const std::string& iface_name, uint8_t configId);
-
-    wifi_error setDtimConfig(const std::string& iface_name,
-                             uint32_t multiplier);
-
-    // Retrieve the list of usable channels in the requested bands
-    // for the requested modes
-    std::pair<wifi_error, std::vector<wifi_usable_channel>> getUsableChannels(
-        uint32_t band_mask, uint32_t iface_mode_mask, uint32_t filter_mask);
-
-    wifi_error triggerSubsystemRestart();
-
-   private:
-    // Retrieve interface handles for all the available interfaces.
-    wifi_error retrieveIfaceHandles();
-    wifi_interface_handle getIfaceHandle(const std::string& iface_name);
-    // Run the legacy HAL event loop thread.
-    void runEventLoop();
-    // Retrieve the cached gscan results to pass the results back to the
-    // external callbacks.
-    std::pair<wifi_error, std::vector<wifi_cached_scan_results>>
-    getGscanCachedResults(const std::string& iface_name);
-    void invalidate();
-    // Handles wifi (error) status of Virtual interface create/delete
-    wifi_error handleVirtualInterfaceCreateOrDeleteStatus(
-        const std::string& ifname, wifi_error status);
-
-    // Global function table of legacy HAL.
-    wifi_hal_fn global_func_table_;
-    // Opaque handle to be used for all global operations.
-    wifi_handle global_handle_;
-    // Map of interface name to handle that is to be used for all interface
-    // specific operations.
-    std::map<std::string, wifi_interface_handle> iface_name_to_handle_;
-    // Flag to indicate if we have initiated the cleanup of legacy HAL.
-    std::atomic<bool> awaiting_event_loop_termination_;
-    std::condition_variable_any stop_wait_cv_;
-    // Flag to indicate if the legacy HAL has been started.
-    bool is_started_;
-    std::weak_ptr<wifi_system::InterfaceTool> iface_tool_;
-    // flag to indicate if this HAL is for the primary chip. This is used
-    // in order to avoid some hard-coded behavior used with older HALs,
-    // such as bring wlan0 interface up/down on start/stop HAL.
-    // it may be removed once vendor HALs are updated.
-    bool is_primary_;
-};
-
-}  // namespace legacy_hal
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // WIFI_LEGACY_HAL_H_
diff --git a/wifi/1.5/default/wifi_legacy_hal_factory.cpp b/wifi/1.5/default/wifi_legacy_hal_factory.cpp
deleted file mode 100644
index fbaa284..0000000
--- a/wifi/1.5/default/wifi_legacy_hal_factory.cpp
+++ /dev/null
@@ -1,263 +0,0 @@
-/*
- * Copyright (C) 2020 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <dirent.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-
-#include <android-base/logging.h>
-#include <dlfcn.h>
-#include <libxml/parser.h>
-#include <libxml/tree.h>
-#include <libxml/xmlmemory.h>
-
-#include "wifi_legacy_hal_factory.h"
-#include "wifi_legacy_hal_stubs.h"
-
-namespace {
-static constexpr char kVendorHalsDescPath[] = "/vendor/etc/wifi/vendor_hals";
-static constexpr char kVendorHalsDescExt[] = ".xml";
-static constexpr uint32_t kVendorHalsDescVersion = 1;
-
-bool isDirectory(struct dirent* entryPtr) {
-    bool isDir = false;
-    if (entryPtr->d_type != DT_UNKNOWN && entryPtr->d_type != DT_LNK) {
-        isDir = (entryPtr->d_type == DT_DIR);
-    } else {
-        struct stat entryStat;
-        stat(entryPtr->d_name, &entryStat);
-        isDir = S_ISDIR(entryStat.st_mode);
-    }
-    return isDir;
-}
-
-bool isFileExtension(const char* name, const char* ext) {
-    if (name == NULL) return false;
-    if (ext == NULL) return false;
-
-    size_t extLen = strlen(ext);
-    size_t nameLen = strlen(name);
-
-    if (extLen > nameLen) return false;
-
-    if (strncmp(name + nameLen - extLen, ext, extLen) != 0) return false;
-
-    return true;
-}
-};  // namespace
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-namespace legacy_hal {
-
-WifiLegacyHalFactory::WifiLegacyHalFactory(
-    const std::weak_ptr<wifi_system::InterfaceTool> iface_tool)
-    : iface_tool_(iface_tool) {}
-
-std::vector<std::shared_ptr<WifiLegacyHal>> WifiLegacyHalFactory::getHals() {
-    if (legacy_hals_.empty()) {
-        if (!initVendorHalDescriptorFromLinked())
-            initVendorHalsDescriptorList();
-        for (auto& desc : descs_) {
-            std::shared_ptr<WifiLegacyHal> hal =
-                std::make_shared<WifiLegacyHal>(iface_tool_, desc.fn,
-                                                desc.primary);
-            legacy_hals_.push_back(hal);
-        }
-    }
-
-    return legacy_hals_;
-}
-
-bool WifiLegacyHalFactory::initVendorHalDescriptorFromLinked() {
-    wifi_hal_lib_desc desc;
-
-    if (!initLinkedHalFunctionTable(&desc.fn)) return false;
-
-    desc.primary = true;
-    desc.handle = NULL;
-    descs_.push_back(desc);
-    return true;
-}
-
-bool WifiLegacyHalFactory::initLinkedHalFunctionTable(wifi_hal_fn* hal_fn) {
-    init_wifi_vendor_hal_func_table_t initfn;
-
-    initfn = (init_wifi_vendor_hal_func_table_t)dlsym(
-        RTLD_DEFAULT, "init_wifi_vendor_hal_func_table");
-    if (!initfn) {
-        LOG(INFO) << "no vendor HAL library linked, will try dynamic load";
-        return false;
-    }
-
-    if (!initHalFuncTableWithStubs(hal_fn)) {
-        LOG(ERROR) << "Can not initialize the basic function pointer table";
-        return false;
-    }
-
-    if (initfn(hal_fn) != WIFI_SUCCESS) {
-        LOG(ERROR) << "Can not initialize the vendor function pointer table";
-        return false;
-    }
-
-    return true;
-}
-
-/*
- * Overall structure of the HAL descriptor XML schema
- *
- * <?xml version="1.0" encoding="UTF-8"?>
- * <WifiVendorHal version="1">
- * <path>/vendor/lib64/libwifi-hal-qcom.so</path>
- * <primary>1</primary>
- * </WifiVendorHal>
- */
-void WifiLegacyHalFactory::initVendorHalsDescriptorList() {
-    xmlDocPtr xml;
-    xmlNodePtr node, cnode;
-    char* version;
-    std::string path;
-    xmlChar* value;
-    wifi_hal_lib_desc desc;
-
-    LOG(INFO) << "processing vendor HALs descriptions in "
-              << kVendorHalsDescPath;
-    DIR* dirPtr = ::opendir(kVendorHalsDescPath);
-    if (dirPtr == NULL) {
-        LOG(ERROR) << "failed to open " << kVendorHalsDescPath;
-        return;
-    }
-    for (struct dirent* entryPtr = ::readdir(dirPtr); entryPtr != NULL;
-         entryPtr = ::readdir(dirPtr)) {
-        if (isDirectory(entryPtr)) continue;
-
-        if (!isFileExtension(entryPtr->d_name, kVendorHalsDescExt))
-            continue;  // only process .xml files
-
-        LOG(INFO) << "processing config file: " << entryPtr->d_name;
-
-        std::string fullPath(kVendorHalsDescPath);
-        fullPath.append("/");
-        fullPath.append(entryPtr->d_name);
-        xml = xmlReadFile(fullPath.c_str(), "UTF-8", XML_PARSE_RECOVER);
-        if (!xml) {
-            LOG(ERROR) << "failed to parse: " << entryPtr->d_name
-                       << " skipping...";
-            continue;
-        }
-        node = xmlDocGetRootElement(xml);
-        if (!node) {
-            LOG(ERROR) << "empty config file: " << entryPtr->d_name
-                       << " skipping...";
-            goto skip;
-        }
-        if (xmlStrcmp(node->name, BAD_CAST "WifiVendorHal")) {
-            LOG(ERROR) << "bad config, root element not WifiVendorHal: "
-                       << entryPtr->d_name << " skipping...";
-            goto skip;
-        }
-        version = (char*)xmlGetProp(node, BAD_CAST "version");
-        if (!version || strtoul(version, NULL, 0) != kVendorHalsDescVersion) {
-            LOG(ERROR) << "conf file: " << entryPtr->d_name
-                       << "must have version: " << kVendorHalsDescVersion
-                       << ", skipping...";
-            goto skip;
-        }
-        cnode = node->children;
-        path.clear();
-        desc.primary = false;
-        while (cnode) {
-            if (!xmlStrcmp(cnode->name, BAD_CAST "path")) {
-                value = xmlNodeListGetString(xml, cnode->children, 1);
-                if (value) path = (char*)value;
-                xmlFree(value);
-            } else if (!xmlStrcmp(cnode->name, BAD_CAST "primary")) {
-                value = xmlNodeListGetString(xml, cnode->children, 1);
-                desc.primary = !xmlStrcmp(value, BAD_CAST "1");
-                xmlFree(value);
-            }
-            cnode = cnode->next;
-        }
-        if (path.empty()) {
-            LOG(ERROR) << "hal library path not provided in: "
-                       << entryPtr->d_name << ", skipping...";
-            goto skip;
-        }
-        if (loadVendorHalLib(path, desc)) {
-            if (desc.primary)
-                descs_.insert(descs_.begin(), desc);
-            else
-                descs_.push_back(desc);
-        }
-    skip:
-        xmlFreeDoc(xml);
-    }
-    ::closedir(dirPtr);
-}
-
-bool WifiLegacyHalFactory::loadVendorHalLib(const std::string& path,
-                                            wifi_hal_lib_desc& desc) {
-    void* h = dlopen(path.c_str(), RTLD_NOW | RTLD_LOCAL);
-    init_wifi_vendor_hal_func_table_t initfn;
-    wifi_error res;
-
-    if (!h) {
-        LOG(ERROR) << "failed to open vendor hal library: " << path;
-        return false;
-    }
-    initfn = (init_wifi_vendor_hal_func_table_t)dlsym(
-        h, "init_wifi_vendor_hal_func_table");
-    if (!initfn) {
-        LOG(ERROR) << "init_wifi_vendor_hal_func_table not found in: " << path;
-        goto out_err;
-    }
-
-    if (!initHalFuncTableWithStubs(&desc.fn)) {
-        LOG(ERROR) << "Can not initialize the basic function pointer table";
-        goto out_err;
-    }
-    res = initfn(&desc.fn);
-    if (res != WIFI_SUCCESS) {
-        LOG(ERROR) << "failed to initialize the vendor func table in: " << path
-                   << " error: " << res;
-        goto out_err;
-    }
-
-    res = desc.fn.wifi_early_initialize();
-    // vendor HALs which do not implement early_initialize will return
-    // WIFI_ERROR_NOT_SUPPORTED, treat this as success.
-    if (res != WIFI_SUCCESS && res != WIFI_ERROR_NOT_SUPPORTED) {
-        LOG(ERROR) << "early initialization failed in: " << path
-                   << " error: " << res;
-        goto out_err;
-    }
-
-    desc.handle = h;
-    return true;
-out_err:
-    dlclose(h);
-    return false;
-}
-
-}  // namespace legacy_hal
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.5/default/wifi_legacy_hal_factory.h b/wifi/1.5/default/wifi_legacy_hal_factory.h
deleted file mode 100644
index e3440fa..0000000
--- a/wifi/1.5/default/wifi_legacy_hal_factory.h
+++ /dev/null
@@ -1,67 +0,0 @@
-/*
- * Copyright (C) 2020 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef WIFI_LEGACY_HAL_FACTORY_H_
-#define WIFI_LEGACY_HAL_FACTORY_H_
-
-#include <wifi_system/interface_tool.h>
-
-#include "wifi_legacy_hal.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-// This is in a separate namespace to prevent typename conflicts between
-// the legacy HAL types and the HIDL interface types.
-namespace legacy_hal {
-/**
- * Class that creates WifiLegacyHal objects for vendor HALs in the system.
- */
-class WifiLegacyHalFactory {
-   public:
-    WifiLegacyHalFactory(
-        const std::weak_ptr<wifi_system::InterfaceTool> iface_tool);
-    virtual ~WifiLegacyHalFactory() = default;
-
-    std::vector<std::shared_ptr<WifiLegacyHal>> getHals();
-
-   private:
-    typedef struct {
-        wifi_hal_fn fn;
-        bool primary;
-        void* handle;
-    } wifi_hal_lib_desc;
-
-    bool initVendorHalDescriptorFromLinked();
-    void initVendorHalsDescriptorList();
-    bool initLinkedHalFunctionTable(wifi_hal_fn* hal_fn);
-    bool loadVendorHalLib(const std::string& path, wifi_hal_lib_desc& desc);
-
-    std::weak_ptr<wifi_system::InterfaceTool> iface_tool_;
-    std::vector<wifi_hal_lib_desc> descs_;
-    std::vector<std::shared_ptr<WifiLegacyHal>> legacy_hals_;
-};
-
-}  // namespace legacy_hal
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // WIFI_LEGACY_HAL_FACTORY_H_
diff --git a/wifi/1.5/default/wifi_legacy_hal_stubs.cpp b/wifi/1.5/default/wifi_legacy_hal_stubs.cpp
deleted file mode 100644
index dd860d6..0000000
--- a/wifi/1.5/default/wifi_legacy_hal_stubs.cpp
+++ /dev/null
@@ -1,171 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "wifi_legacy_hal_stubs.h"
-
-// TODO: Remove these stubs from HalTool in libwifi-system.
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-namespace legacy_hal {
-template <typename>
-struct stubFunction;
-
-template <typename R, typename... Args>
-struct stubFunction<R (*)(Args...)> {
-    static constexpr R invoke(Args...) { return WIFI_ERROR_NOT_SUPPORTED; }
-};
-template <typename... Args>
-struct stubFunction<void (*)(Args...)> {
-    static constexpr void invoke(Args...) {}
-};
-
-template <typename T>
-void populateStubFor(T* val) {
-    *val = &stubFunction<T>::invoke;
-}
-
-bool initHalFuncTableWithStubs(wifi_hal_fn* hal_fn) {
-    if (hal_fn == nullptr) {
-        return false;
-    }
-    populateStubFor(&hal_fn->wifi_initialize);
-    populateStubFor(&hal_fn->wifi_wait_for_driver_ready);
-    populateStubFor(&hal_fn->wifi_cleanup);
-    populateStubFor(&hal_fn->wifi_event_loop);
-    populateStubFor(&hal_fn->wifi_get_error_info);
-    populateStubFor(&hal_fn->wifi_get_supported_feature_set);
-    populateStubFor(&hal_fn->wifi_get_concurrency_matrix);
-    populateStubFor(&hal_fn->wifi_set_scanning_mac_oui);
-    populateStubFor(&hal_fn->wifi_get_supported_channels);
-    populateStubFor(&hal_fn->wifi_is_epr_supported);
-    populateStubFor(&hal_fn->wifi_get_ifaces);
-    populateStubFor(&hal_fn->wifi_get_iface_name);
-    populateStubFor(&hal_fn->wifi_set_iface_event_handler);
-    populateStubFor(&hal_fn->wifi_reset_iface_event_handler);
-    populateStubFor(&hal_fn->wifi_start_gscan);
-    populateStubFor(&hal_fn->wifi_stop_gscan);
-    populateStubFor(&hal_fn->wifi_get_cached_gscan_results);
-    populateStubFor(&hal_fn->wifi_set_bssid_hotlist);
-    populateStubFor(&hal_fn->wifi_reset_bssid_hotlist);
-    populateStubFor(&hal_fn->wifi_set_significant_change_handler);
-    populateStubFor(&hal_fn->wifi_reset_significant_change_handler);
-    populateStubFor(&hal_fn->wifi_get_gscan_capabilities);
-    populateStubFor(&hal_fn->wifi_set_link_stats);
-    populateStubFor(&hal_fn->wifi_get_link_stats);
-    populateStubFor(&hal_fn->wifi_clear_link_stats);
-    populateStubFor(&hal_fn->wifi_get_valid_channels);
-    populateStubFor(&hal_fn->wifi_rtt_range_request);
-    populateStubFor(&hal_fn->wifi_rtt_range_cancel);
-    populateStubFor(&hal_fn->wifi_get_rtt_capabilities);
-    populateStubFor(&hal_fn->wifi_rtt_get_responder_info);
-    populateStubFor(&hal_fn->wifi_enable_responder);
-    populateStubFor(&hal_fn->wifi_disable_responder);
-    populateStubFor(&hal_fn->wifi_set_nodfs_flag);
-    populateStubFor(&hal_fn->wifi_start_logging);
-    populateStubFor(&hal_fn->wifi_set_epno_list);
-    populateStubFor(&hal_fn->wifi_reset_epno_list);
-    populateStubFor(&hal_fn->wifi_set_country_code);
-    populateStubFor(&hal_fn->wifi_get_firmware_memory_dump);
-    populateStubFor(&hal_fn->wifi_set_log_handler);
-    populateStubFor(&hal_fn->wifi_reset_log_handler);
-    populateStubFor(&hal_fn->wifi_set_alert_handler);
-    populateStubFor(&hal_fn->wifi_reset_alert_handler);
-    populateStubFor(&hal_fn->wifi_get_firmware_version);
-    populateStubFor(&hal_fn->wifi_get_ring_buffers_status);
-    populateStubFor(&hal_fn->wifi_get_logger_supported_feature_set);
-    populateStubFor(&hal_fn->wifi_get_ring_data);
-    populateStubFor(&hal_fn->wifi_enable_tdls);
-    populateStubFor(&hal_fn->wifi_disable_tdls);
-    populateStubFor(&hal_fn->wifi_get_tdls_status);
-    populateStubFor(&hal_fn->wifi_get_tdls_capabilities);
-    populateStubFor(&hal_fn->wifi_get_driver_version);
-    populateStubFor(&hal_fn->wifi_set_passpoint_list);
-    populateStubFor(&hal_fn->wifi_reset_passpoint_list);
-    populateStubFor(&hal_fn->wifi_set_lci);
-    populateStubFor(&hal_fn->wifi_set_lcr);
-    populateStubFor(&hal_fn->wifi_start_sending_offloaded_packet);
-    populateStubFor(&hal_fn->wifi_stop_sending_offloaded_packet);
-    populateStubFor(&hal_fn->wifi_start_rssi_monitoring);
-    populateStubFor(&hal_fn->wifi_stop_rssi_monitoring);
-    populateStubFor(&hal_fn->wifi_get_wake_reason_stats);
-    populateStubFor(&hal_fn->wifi_configure_nd_offload);
-    populateStubFor(&hal_fn->wifi_get_driver_memory_dump);
-    populateStubFor(&hal_fn->wifi_start_pkt_fate_monitoring);
-    populateStubFor(&hal_fn->wifi_get_tx_pkt_fates);
-    populateStubFor(&hal_fn->wifi_get_rx_pkt_fates);
-    populateStubFor(&hal_fn->wifi_nan_enable_request);
-    populateStubFor(&hal_fn->wifi_nan_disable_request);
-    populateStubFor(&hal_fn->wifi_nan_publish_request);
-    populateStubFor(&hal_fn->wifi_nan_publish_cancel_request);
-    populateStubFor(&hal_fn->wifi_nan_subscribe_request);
-    populateStubFor(&hal_fn->wifi_nan_subscribe_cancel_request);
-    populateStubFor(&hal_fn->wifi_nan_transmit_followup_request);
-    populateStubFor(&hal_fn->wifi_nan_stats_request);
-    populateStubFor(&hal_fn->wifi_nan_config_request);
-    populateStubFor(&hal_fn->wifi_nan_tca_request);
-    populateStubFor(&hal_fn->wifi_nan_beacon_sdf_payload_request);
-    populateStubFor(&hal_fn->wifi_nan_register_handler);
-    populateStubFor(&hal_fn->wifi_nan_get_version);
-    populateStubFor(&hal_fn->wifi_nan_get_capabilities);
-    populateStubFor(&hal_fn->wifi_nan_data_interface_create);
-    populateStubFor(&hal_fn->wifi_nan_data_interface_delete);
-    populateStubFor(&hal_fn->wifi_nan_data_request_initiator);
-    populateStubFor(&hal_fn->wifi_nan_data_indication_response);
-    populateStubFor(&hal_fn->wifi_nan_data_end);
-    populateStubFor(&hal_fn->wifi_get_packet_filter_capabilities);
-    populateStubFor(&hal_fn->wifi_set_packet_filter);
-    populateStubFor(&hal_fn->wifi_read_packet_filter);
-    populateStubFor(&hal_fn->wifi_get_roaming_capabilities);
-    populateStubFor(&hal_fn->wifi_enable_firmware_roaming);
-    populateStubFor(&hal_fn->wifi_configure_roaming);
-    populateStubFor(&hal_fn->wifi_select_tx_power_scenario);
-    populateStubFor(&hal_fn->wifi_reset_tx_power_scenario);
-    populateStubFor(&hal_fn->wifi_set_radio_mode_change_handler);
-    populateStubFor(&hal_fn->wifi_set_latency_mode);
-    populateStubFor(&hal_fn->wifi_set_thermal_mitigation_mode);
-    populateStubFor(&hal_fn->wifi_virtual_interface_create);
-    populateStubFor(&hal_fn->wifi_virtual_interface_delete);
-    populateStubFor(&hal_fn->wifi_map_dscp_access_category);
-    populateStubFor(&hal_fn->wifi_reset_dscp_mapping);
-    populateStubFor(&hal_fn->wifi_set_subsystem_restart_handler);
-    populateStubFor(&hal_fn->wifi_get_supported_iface_name);
-    populateStubFor(&hal_fn->wifi_early_initialize);
-    populateStubFor(&hal_fn->wifi_get_chip_feature_set);
-    populateStubFor(&hal_fn->wifi_multi_sta_set_primary_connection);
-    populateStubFor(&hal_fn->wifi_multi_sta_set_use_case);
-    populateStubFor(&hal_fn->wifi_set_coex_unsafe_channels);
-    populateStubFor(&hal_fn->wifi_set_voip_mode);
-    populateStubFor(&hal_fn->wifi_twt_register_handler);
-    populateStubFor(&hal_fn->wifi_twt_get_capability);
-    populateStubFor(&hal_fn->wifi_twt_setup_request);
-    populateStubFor(&hal_fn->wifi_twt_teardown_request);
-    populateStubFor(&hal_fn->wifi_twt_info_frame_request);
-    populateStubFor(&hal_fn->wifi_twt_get_stats);
-    populateStubFor(&hal_fn->wifi_twt_clear_stats);
-    populateStubFor(&hal_fn->wifi_set_dtim_config);
-    populateStubFor(&hal_fn->wifi_get_usable_channels);
-    populateStubFor(&hal_fn->wifi_trigger_subsystem_restart);
-    return true;
-}
-}  // namespace legacy_hal
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.5/default/wifi_legacy_hal_stubs.h b/wifi/1.5/default/wifi_legacy_hal_stubs.h
deleted file mode 100644
index 480389b..0000000
--- a/wifi/1.5/default/wifi_legacy_hal_stubs.h
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef WIFI_LEGACY_HAL_STUBS_H_
-#define WIFI_LEGACY_HAL_STUBS_H_
-
-#include <hardware_legacy/wifi_hal.h>
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-namespace legacy_hal {
-
-bool initHalFuncTableWithStubs(wifi_hal_fn* hal_fn);
-}  // namespace legacy_hal
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // WIFI_LEGACY_HAL_STUBS_H_
diff --git a/wifi/1.5/default/wifi_mode_controller.cpp b/wifi/1.5/default/wifi_mode_controller.cpp
deleted file mode 100644
index b1db8b3..0000000
--- a/wifi/1.5/default/wifi_mode_controller.cpp
+++ /dev/null
@@ -1,91 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-#include <android-base/macros.h>
-#include <private/android_filesystem_config.h>
-
-#include "wifi_mode_controller.h"
-
-using android::hardware::wifi::V1_0::IfaceType;
-using android::wifi_hal::DriverTool;
-
-namespace {
-int convertIfaceTypeToFirmwareMode(IfaceType type) {
-    int mode;
-    switch (type) {
-        case IfaceType::AP:
-            mode = DriverTool::kFirmwareModeAp;
-            break;
-        case IfaceType::P2P:
-            mode = DriverTool::kFirmwareModeP2p;
-            break;
-        case IfaceType::NAN:
-            // NAN is exposed in STA mode currently.
-            mode = DriverTool::kFirmwareModeSta;
-            break;
-        case IfaceType::STA:
-            mode = DriverTool::kFirmwareModeSta;
-            break;
-    }
-    return mode;
-}
-}  // namespace
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-namespace mode_controller {
-
-WifiModeController::WifiModeController() : driver_tool_(new DriverTool) {}
-
-bool WifiModeController::isFirmwareModeChangeNeeded(IfaceType type) {
-    return driver_tool_->IsFirmwareModeChangeNeeded(
-        convertIfaceTypeToFirmwareMode(type));
-}
-
-bool WifiModeController::initialize() {
-    if (!driver_tool_->LoadDriver()) {
-        LOG(ERROR) << "Failed to load WiFi driver";
-        return false;
-    }
-    return true;
-}
-
-bool WifiModeController::changeFirmwareMode(IfaceType type) {
-    if (!driver_tool_->ChangeFirmwareMode(
-            convertIfaceTypeToFirmwareMode(type))) {
-        LOG(ERROR) << "Failed to change firmware mode";
-        return false;
-    }
-    return true;
-}
-
-bool WifiModeController::deinitialize() {
-    if (!driver_tool_->UnloadDriver()) {
-        LOG(ERROR) << "Failed to unload WiFi driver";
-        return false;
-    }
-    return true;
-}
-}  // namespace mode_controller
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.5/default/wifi_mode_controller.h b/wifi/1.5/default/wifi_mode_controller.h
deleted file mode 100644
index 2eeca78..0000000
--- a/wifi/1.5/default/wifi_mode_controller.h
+++ /dev/null
@@ -1,63 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef WIFI_MODE_CONTROLLER_H_
-#define WIFI_MODE_CONTROLLER_H_
-
-#include <wifi_hal/driver_tool.h>
-
-#include <android/hardware/wifi/1.0/IWifi.h>
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-namespace mode_controller {
-using namespace android::hardware::wifi::V1_0;
-
-/**
- * Class that encapsulates all firmware mode configuration.
- * This class will perform the necessary firmware reloads to put the chip in the
- * required state (essentially a wrapper over DriverTool).
- */
-class WifiModeController {
-   public:
-    WifiModeController();
-    virtual ~WifiModeController() = default;
-
-    // Checks if a firmware mode change is necessary to support the specified
-    // iface type operations.
-    virtual bool isFirmwareModeChangeNeeded(IfaceType type);
-    virtual bool initialize();
-    // Change the firmware mode to support the specified iface type operations.
-    virtual bool changeFirmwareMode(IfaceType type);
-    // Unload the driver. This should be invoked whenever |IWifi.stop()| is
-    // invoked.
-    virtual bool deinitialize();
-
-   private:
-    std::unique_ptr<wifi_hal::DriverTool> driver_tool_;
-};
-
-}  // namespace mode_controller
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // WIFI_MODE_CONTROLLER_H_
diff --git a/wifi/1.5/default/wifi_nan_iface.cpp b/wifi/1.5/default/wifi_nan_iface.cpp
deleted file mode 100644
index 0cc6cd5..0000000
--- a/wifi/1.5/default/wifi_nan_iface.cpp
+++ /dev/null
@@ -1,1003 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-
-#include "hidl_return_util.h"
-#include "hidl_struct_util.h"
-#include "wifi_nan_iface.h"
-#include "wifi_status_util.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-using hidl_return_util::validateAndCall;
-
-WifiNanIface::WifiNanIface(
-    const std::string& ifname, bool is_dedicated_iface,
-    const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
-    const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util)
-    : ifname_(ifname),
-      is_dedicated_iface_(is_dedicated_iface),
-      legacy_hal_(legacy_hal),
-      iface_util_(iface_util),
-      is_valid_(true) {
-    if (is_dedicated_iface_) {
-        // If using a dedicated iface, set the iface up first.
-        if (!iface_util_.lock()->setUpState(ifname_, true)) {
-            // Fatal failure, invalidate the iface object.
-            invalidate();
-            return;
-        }
-    }
-    // Register all the callbacks here. these should be valid for the lifetime
-    // of the object. Whenever the mode changes legacy HAL will remove
-    // all of these callbacks.
-    legacy_hal::NanCallbackHandlers callback_handlers;
-    android::wp<WifiNanIface> weak_ptr_this(this);
-
-    // Callback for response.
-    callback_handlers
-        .on_notify_response = [weak_ptr_this](
-                                  legacy_hal::transaction_id id,
-                                  const legacy_hal::NanResponseMsg& msg) {
-        const auto shared_ptr_this = weak_ptr_this.promote();
-        if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-            LOG(ERROR) << "Callback invoked on an invalid object";
-            return;
-        }
-        WifiNanStatus wifiNanStatus;
-        if (!hidl_struct_util::convertLegacyNanResponseHeaderToHidl(
-                msg, &wifiNanStatus)) {
-            LOG(ERROR) << "Failed to convert nan response header";
-            return;
-        }
-
-        switch (msg.response_type) {
-            case legacy_hal::NAN_RESPONSE_ENABLED: {
-                for (const auto& callback :
-                     shared_ptr_this->getEventCallbacks()) {
-                    if (!callback->notifyEnableResponse(id, wifiNanStatus)
-                             .isOk()) {
-                        LOG(ERROR) << "Failed to invoke the callback";
-                    }
-                }
-                break;
-            }
-            case legacy_hal::NAN_RESPONSE_DISABLED: {
-                for (const auto& callback :
-                     shared_ptr_this->getEventCallbacks()) {
-                    if (!callback->notifyDisableResponse(id, wifiNanStatus)
-                             .isOk()) {
-                        LOG(ERROR) << "Failed to invoke the callback";
-                    }
-                }
-                break;
-            }
-            case legacy_hal::NAN_RESPONSE_PUBLISH: {
-                for (const auto& callback :
-                     shared_ptr_this->getEventCallbacks()) {
-                    if (!callback
-                             ->notifyStartPublishResponse(
-                                 id, wifiNanStatus,
-                                 msg.body.publish_response.publish_id)
-                             .isOk()) {
-                        LOG(ERROR) << "Failed to invoke the callback";
-                    }
-                }
-                break;
-            }
-            case legacy_hal::NAN_RESPONSE_PUBLISH_CANCEL: {
-                for (const auto& callback :
-                     shared_ptr_this->getEventCallbacks()) {
-                    if (!callback->notifyStopPublishResponse(id, wifiNanStatus)
-                             .isOk()) {
-                        LOG(ERROR) << "Failed to invoke the callback";
-                    }
-                }
-                break;
-            }
-            case legacy_hal::NAN_RESPONSE_TRANSMIT_FOLLOWUP: {
-                for (const auto& callback :
-                     shared_ptr_this->getEventCallbacks()) {
-                    if (!callback
-                             ->notifyTransmitFollowupResponse(id, wifiNanStatus)
-                             .isOk()) {
-                        LOG(ERROR) << "Failed to invoke the callback";
-                    }
-                }
-                break;
-            }
-            case legacy_hal::NAN_RESPONSE_SUBSCRIBE: {
-                for (const auto& callback :
-                     shared_ptr_this->getEventCallbacks()) {
-                    if (!callback
-                             ->notifyStartSubscribeResponse(
-                                 id, wifiNanStatus,
-                                 msg.body.subscribe_response.subscribe_id)
-                             .isOk()) {
-                        LOG(ERROR) << "Failed to invoke the callback";
-                    }
-                }
-                break;
-            }
-            case legacy_hal::NAN_RESPONSE_SUBSCRIBE_CANCEL: {
-                for (const auto& callback :
-                     shared_ptr_this->getEventCallbacks()) {
-                    if (!callback
-                             ->notifyStopSubscribeResponse(id, wifiNanStatus)
-                             .isOk()) {
-                        LOG(ERROR) << "Failed to invoke the callback";
-                    }
-                }
-                break;
-            }
-            case legacy_hal::NAN_RESPONSE_CONFIG: {
-                for (const auto& callback :
-                     shared_ptr_this->getEventCallbacks()) {
-                    if (!callback->notifyConfigResponse(id, wifiNanStatus)
-                             .isOk()) {
-                        LOG(ERROR) << "Failed to invoke the callback";
-                    }
-                }
-                break;
-            }
-            case legacy_hal::NAN_GET_CAPABILITIES: {
-                NanCapabilities hidl_struct;
-                if (!hidl_struct_util::
-                        convertLegacyNanCapabilitiesResponseToHidl(
-                            msg.body.nan_capabilities, &hidl_struct)) {
-                    LOG(ERROR) << "Failed to convert nan capabilities response";
-                    return;
-                }
-                for (const auto& callback :
-                     shared_ptr_this->getEventCallbacks_1_5()) {
-                    if (!callback
-                             ->notifyCapabilitiesResponse_1_5(id, wifiNanStatus,
-                                                              hidl_struct)
-                             .isOk()) {
-                        LOG(ERROR) << "Failed to invoke the callback";
-                    }
-                }
-                break;
-            }
-            case legacy_hal::NAN_DP_INTERFACE_CREATE: {
-                for (const auto& callback :
-                     shared_ptr_this->getEventCallbacks()) {
-                    if (!callback
-                             ->notifyCreateDataInterfaceResponse(id,
-                                                                 wifiNanStatus)
-                             .isOk()) {
-                        LOG(ERROR) << "Failed to invoke the callback";
-                    }
-                }
-                break;
-            }
-            case legacy_hal::NAN_DP_INTERFACE_DELETE: {
-                for (const auto& callback :
-                     shared_ptr_this->getEventCallbacks()) {
-                    if (!callback
-                             ->notifyDeleteDataInterfaceResponse(id,
-                                                                 wifiNanStatus)
-                             .isOk()) {
-                        LOG(ERROR) << "Failed to invoke the callback";
-                    }
-                }
-                break;
-            }
-            case legacy_hal::NAN_DP_INITIATOR_RESPONSE: {
-                for (const auto& callback :
-                     shared_ptr_this->getEventCallbacks()) {
-                    if (!callback
-                             ->notifyInitiateDataPathResponse(
-                                 id, wifiNanStatus,
-                                 msg.body.data_request_response.ndp_instance_id)
-                             .isOk()) {
-                        LOG(ERROR) << "Failed to invoke the callback";
-                    }
-                }
-                break;
-            }
-            case legacy_hal::NAN_DP_RESPONDER_RESPONSE: {
-                for (const auto& callback :
-                     shared_ptr_this->getEventCallbacks()) {
-                    if (!callback
-                             ->notifyRespondToDataPathIndicationResponse(
-                                 id, wifiNanStatus)
-                             .isOk()) {
-                        LOG(ERROR) << "Failed to invoke the callback";
-                    }
-                }
-                break;
-            }
-            case legacy_hal::NAN_DP_END: {
-                for (const auto& callback :
-                     shared_ptr_this->getEventCallbacks()) {
-                    if (!callback
-                             ->notifyTerminateDataPathResponse(id,
-                                                               wifiNanStatus)
-                             .isOk()) {
-                        LOG(ERROR) << "Failed to invoke the callback";
-                    }
-                }
-                break;
-            }
-            case legacy_hal::NAN_RESPONSE_BEACON_SDF_PAYLOAD:
-            /* fall through */
-            case legacy_hal::NAN_RESPONSE_TCA:
-            /* fall through */
-            case legacy_hal::NAN_RESPONSE_STATS:
-            /* fall through */
-            case legacy_hal::NAN_RESPONSE_ERROR:
-            /* fall through */
-            default:
-                LOG(ERROR) << "Unknown or unhandled response type: "
-                           << msg.response_type;
-                return;
-        }
-    };
-
-    callback_handlers.on_event_disc_eng_event =
-        [weak_ptr_this](const legacy_hal::NanDiscEngEventInd& msg) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            NanClusterEventInd hidl_struct;
-            // event types defined identically - hence can be cast
-            hidl_struct.eventType = (NanClusterEventType)msg.event_type;
-            hidl_struct.addr = msg.data.mac_addr.addr;
-
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                if (!callback->eventClusterEvent(hidl_struct).isOk()) {
-                    LOG(ERROR) << "Failed to invoke the callback";
-                }
-            }
-        };
-
-    callback_handlers.on_event_disabled =
-        [weak_ptr_this](const legacy_hal::NanDisabledInd& msg) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            WifiNanStatus status;
-            hidl_struct_util::convertToWifiNanStatus(
-                msg.reason, msg.nan_reason, sizeof(msg.nan_reason), &status);
-
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                if (!callback->eventDisabled(status).isOk()) {
-                    LOG(ERROR) << "Failed to invoke the callback";
-                }
-            }
-        };
-
-    callback_handlers.on_event_publish_terminated =
-        [weak_ptr_this](const legacy_hal::NanPublishTerminatedInd& msg) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            WifiNanStatus status;
-            hidl_struct_util::convertToWifiNanStatus(
-                msg.reason, msg.nan_reason, sizeof(msg.nan_reason), &status);
-
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                if (!callback->eventPublishTerminated(msg.publish_id, status)
-                         .isOk()) {
-                    LOG(ERROR) << "Failed to invoke the callback";
-                }
-            }
-        };
-
-    callback_handlers.on_event_subscribe_terminated =
-        [weak_ptr_this](const legacy_hal::NanSubscribeTerminatedInd& msg) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            WifiNanStatus status;
-            hidl_struct_util::convertToWifiNanStatus(
-                msg.reason, msg.nan_reason, sizeof(msg.nan_reason), &status);
-
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                if (!callback
-                         ->eventSubscribeTerminated(msg.subscribe_id, status)
-                         .isOk()) {
-                    LOG(ERROR) << "Failed to invoke the callback";
-                }
-            }
-        };
-
-    callback_handlers.on_event_match =
-        [weak_ptr_this](const legacy_hal::NanMatchInd& msg) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            NanMatchInd hidl_struct;
-            if (!hidl_struct_util::convertLegacyNanMatchIndToHidl(
-                    msg, &hidl_struct)) {
-                LOG(ERROR) << "Failed to convert nan capabilities response";
-                return;
-            }
-
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                if (!callback->eventMatch(hidl_struct).isOk()) {
-                    LOG(ERROR) << "Failed to invoke the callback";
-                }
-            }
-        };
-
-    callback_handlers.on_event_match_expired =
-        [weak_ptr_this](const legacy_hal::NanMatchExpiredInd& msg) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                if (!callback
-                         ->eventMatchExpired(msg.publish_subscribe_id,
-                                             msg.requestor_instance_id)
-                         .isOk()) {
-                    LOG(ERROR) << "Failed to invoke the callback";
-                }
-            }
-        };
-
-    callback_handlers.on_event_followup =
-        [weak_ptr_this](const legacy_hal::NanFollowupInd& msg) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            NanFollowupReceivedInd hidl_struct;
-            if (!hidl_struct_util::convertLegacyNanFollowupIndToHidl(
-                    msg, &hidl_struct)) {
-                LOG(ERROR) << "Failed to convert nan capabilities response";
-                return;
-            }
-
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                if (!callback->eventFollowupReceived(hidl_struct).isOk()) {
-                    LOG(ERROR) << "Failed to invoke the callback";
-                }
-            }
-        };
-
-    callback_handlers.on_event_transmit_follow_up =
-        [weak_ptr_this](const legacy_hal::NanTransmitFollowupInd& msg) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            WifiNanStatus status;
-            hidl_struct_util::convertToWifiNanStatus(
-                msg.reason, msg.nan_reason, sizeof(msg.nan_reason), &status);
-
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                if (!callback->eventTransmitFollowup(msg.id, status).isOk()) {
-                    LOG(ERROR) << "Failed to invoke the callback";
-                }
-            }
-        };
-
-    callback_handlers.on_event_data_path_request =
-        [weak_ptr_this](const legacy_hal::NanDataPathRequestInd& msg) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            NanDataPathRequestInd hidl_struct;
-            if (!hidl_struct_util::convertLegacyNanDataPathRequestIndToHidl(
-                    msg, &hidl_struct)) {
-                LOG(ERROR) << "Failed to convert nan capabilities response";
-                return;
-            }
-
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                if (!callback->eventDataPathRequest(hidl_struct).isOk()) {
-                    LOG(ERROR) << "Failed to invoke the callback";
-                }
-            }
-        };
-
-    callback_handlers.on_event_data_path_confirm =
-        [weak_ptr_this](const legacy_hal::NanDataPathConfirmInd& msg) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            V1_2::NanDataPathConfirmInd hidl_struct;
-            if (!hidl_struct_util::convertLegacyNanDataPathConfirmIndToHidl(
-                    msg, &hidl_struct)) {
-                LOG(ERROR) << "Failed to convert nan capabilities response";
-                return;
-            }
-
-            for (const auto& callback :
-                 shared_ptr_this->getEventCallbacks_1_2()) {
-                if (!callback->eventDataPathConfirm_1_2(hidl_struct).isOk()) {
-                    LOG(ERROR) << "Failed to invoke the callback";
-                }
-            }
-        };
-
-    callback_handlers.on_event_data_path_end =
-        [weak_ptr_this](const legacy_hal::NanDataPathEndInd& msg) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                for (int i = 0; i < msg.num_ndp_instances; ++i) {
-                    if (!callback
-                             ->eventDataPathTerminated(msg.ndp_instance_id[i])
-                             .isOk()) {
-                        LOG(ERROR) << "Failed to invoke the callback";
-                    }
-                }
-            }
-        };
-
-    callback_handlers.on_event_beacon_sdf_payload =
-        [weak_ptr_this](const legacy_hal::NanBeaconSdfPayloadInd& /* msg */) {
-            LOG(ERROR) << "on_event_beacon_sdf_payload - should not be called";
-        };
-
-    callback_handlers.on_event_range_request =
-        [weak_ptr_this](const legacy_hal::NanRangeRequestInd& /* msg */) {
-            LOG(ERROR) << "on_event_range_request - should not be called";
-        };
-
-    callback_handlers.on_event_range_report =
-        [weak_ptr_this](const legacy_hal::NanRangeReportInd& /* msg */) {
-            LOG(ERROR) << "on_event_range_report - should not be called";
-        };
-
-    callback_handlers
-        .on_event_schedule_update = [weak_ptr_this](
-                                        const legacy_hal::
-                                            NanDataPathScheduleUpdateInd& msg) {
-        const auto shared_ptr_this = weak_ptr_this.promote();
-        if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-            LOG(ERROR) << "Callback invoked on an invalid object";
-            return;
-        }
-        V1_2::NanDataPathScheduleUpdateInd hidl_struct;
-        if (!hidl_struct_util::convertLegacyNanDataPathScheduleUpdateIndToHidl(
-                msg, &hidl_struct)) {
-            LOG(ERROR) << "Failed to convert nan capabilities response";
-            return;
-        }
-
-        for (const auto& callback : shared_ptr_this->getEventCallbacks_1_2()) {
-            if (!callback->eventDataPathScheduleUpdate(hidl_struct).isOk()) {
-                LOG(ERROR) << "Failed to invoke the callback";
-            }
-        }
-    };
-
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->nanRegisterCallbackHandlers(ifname_,
-                                                        callback_handlers);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        LOG(ERROR) << "Failed to register nan callbacks. Invalidating object";
-        invalidate();
-    }
-
-    // Register for iface state toggle events.
-    iface_util::IfaceEventHandlers event_handlers = {};
-    event_handlers.on_state_toggle_off_on =
-        [weak_ptr_this](const std::string& /* iface_name */) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            // Tell framework that NAN has been disabled.
-            WifiNanStatus status = {
-                NanStatusType::UNSUPPORTED_CONCURRENCY_NAN_DISABLED, ""};
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                if (!callback->eventDisabled(status).isOk()) {
-                    LOG(ERROR) << "Failed to invoke the callback";
-                }
-            }
-        };
-    iface_util_.lock()->registerIfaceEventHandlers(ifname_, event_handlers);
-}
-
-void WifiNanIface::invalidate() {
-    if (!isValid()) {
-        return;
-    }
-    // send commands to HAL to actually disable and destroy interfaces
-    legacy_hal_.lock()->nanDisableRequest(ifname_, 0xFFFF);
-    legacy_hal_.lock()->nanDataInterfaceDelete(ifname_, 0xFFFE, "aware_data0");
-    legacy_hal_.lock()->nanDataInterfaceDelete(ifname_, 0xFFFD, "aware_data1");
-    iface_util_.lock()->unregisterIfaceEventHandlers(ifname_);
-    legacy_hal_.reset();
-    event_cb_handler_.invalidate();
-    event_cb_handler_1_2_.invalidate();
-    event_cb_handler_1_5_.invalidate();
-    is_valid_ = false;
-    if (is_dedicated_iface_) {
-        // If using a dedicated iface, set the iface down.
-        iface_util_.lock()->setUpState(ifname_, false);
-    }
-}
-
-bool WifiNanIface::isValid() { return is_valid_; }
-
-std::string WifiNanIface::getName() { return ifname_; }
-
-std::set<sp<V1_0::IWifiNanIfaceEventCallback>>
-WifiNanIface::getEventCallbacks() {
-    return event_cb_handler_.getCallbacks();
-}
-
-std::set<sp<V1_2::IWifiNanIfaceEventCallback>>
-WifiNanIface::getEventCallbacks_1_2() {
-    return event_cb_handler_1_2_.getCallbacks();
-}
-
-std::set<sp<IWifiNanIfaceEventCallback>> WifiNanIface::getEventCallbacks_1_5() {
-    return event_cb_handler_1_5_.getCallbacks();
-}
-
-Return<void> WifiNanIface::getName(getName_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::getNameInternal, hidl_status_cb);
-}
-
-Return<void> WifiNanIface::getType(getType_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::getTypeInternal, hidl_status_cb);
-}
-
-Return<void> WifiNanIface::registerEventCallback(
-    const sp<V1_0::IWifiNanIfaceEventCallback>& callback,
-    registerEventCallback_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::registerEventCallbackInternal,
-                           hidl_status_cb, callback);
-}
-
-Return<void> WifiNanIface::getCapabilitiesRequest(
-    uint16_t cmd_id, getCapabilitiesRequest_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::getCapabilitiesRequestInternal,
-                           hidl_status_cb, cmd_id);
-}
-
-Return<void> WifiNanIface::enableRequest(uint16_t cmd_id,
-                                         const V1_0::NanEnableRequest& msg,
-                                         enableRequest_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::enableRequestInternal, hidl_status_cb,
-                           cmd_id, msg);
-}
-
-Return<void> WifiNanIface::configRequest(uint16_t cmd_id,
-                                         const V1_0::NanConfigRequest& msg,
-                                         configRequest_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::configRequestInternal, hidl_status_cb,
-                           cmd_id, msg);
-}
-
-Return<void> WifiNanIface::disableRequest(uint16_t cmd_id,
-                                          disableRequest_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::disableRequestInternal,
-                           hidl_status_cb, cmd_id);
-}
-
-Return<void> WifiNanIface::startPublishRequest(
-    uint16_t cmd_id, const NanPublishRequest& msg,
-    startPublishRequest_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::startPublishRequestInternal,
-                           hidl_status_cb, cmd_id, msg);
-}
-
-Return<void> WifiNanIface::stopPublishRequest(
-    uint16_t cmd_id, uint8_t sessionId, stopPublishRequest_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::stopPublishRequestInternal,
-                           hidl_status_cb, cmd_id, sessionId);
-}
-
-Return<void> WifiNanIface::startSubscribeRequest(
-    uint16_t cmd_id, const NanSubscribeRequest& msg,
-    startSubscribeRequest_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::startSubscribeRequestInternal,
-                           hidl_status_cb, cmd_id, msg);
-}
-
-Return<void> WifiNanIface::stopSubscribeRequest(
-    uint16_t cmd_id, uint8_t sessionId,
-    stopSubscribeRequest_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::stopSubscribeRequestInternal,
-                           hidl_status_cb, cmd_id, sessionId);
-}
-
-Return<void> WifiNanIface::transmitFollowupRequest(
-    uint16_t cmd_id, const NanTransmitFollowupRequest& msg,
-    transmitFollowupRequest_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::transmitFollowupRequestInternal,
-                           hidl_status_cb, cmd_id, msg);
-}
-
-Return<void> WifiNanIface::createDataInterfaceRequest(
-    uint16_t cmd_id, const hidl_string& iface_name,
-    createDataInterfaceRequest_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::createDataInterfaceRequestInternal,
-                           hidl_status_cb, cmd_id, iface_name);
-}
-
-Return<void> WifiNanIface::deleteDataInterfaceRequest(
-    uint16_t cmd_id, const hidl_string& iface_name,
-    deleteDataInterfaceRequest_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::deleteDataInterfaceRequestInternal,
-                           hidl_status_cb, cmd_id, iface_name);
-}
-
-Return<void> WifiNanIface::initiateDataPathRequest(
-    uint16_t cmd_id, const NanInitiateDataPathRequest& msg,
-    initiateDataPathRequest_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::initiateDataPathRequestInternal,
-                           hidl_status_cb, cmd_id, msg);
-}
-
-Return<void> WifiNanIface::respondToDataPathIndicationRequest(
-    uint16_t cmd_id, const NanRespondToDataPathIndicationRequest& msg,
-    respondToDataPathIndicationRequest_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-        &WifiNanIface::respondToDataPathIndicationRequestInternal,
-        hidl_status_cb, cmd_id, msg);
-}
-
-Return<void> WifiNanIface::terminateDataPathRequest(
-    uint16_t cmd_id, uint32_t ndpInstanceId,
-    terminateDataPathRequest_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::terminateDataPathRequestInternal,
-                           hidl_status_cb, cmd_id, ndpInstanceId);
-}
-
-Return<void> WifiNanIface::registerEventCallback_1_2(
-    const sp<V1_2::IWifiNanIfaceEventCallback>& callback,
-    registerEventCallback_1_2_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::registerEventCallback_1_2Internal,
-                           hidl_status_cb, callback);
-}
-
-Return<void> WifiNanIface::enableRequest_1_2(
-    uint16_t cmd_id, const V1_0::NanEnableRequest& msg1,
-    const V1_2::NanConfigRequestSupplemental& msg2,
-    enableRequest_1_2_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::enableRequest_1_2Internal,
-                           hidl_status_cb, cmd_id, msg1, msg2);
-}
-
-Return<void> WifiNanIface::configRequest_1_2(
-    uint16_t cmd_id, const V1_0::NanConfigRequest& msg1,
-    const V1_2::NanConfigRequestSupplemental& msg2,
-    configRequest_1_2_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::configRequest_1_2Internal,
-                           hidl_status_cb, cmd_id, msg1, msg2);
-}
-
-Return<void> WifiNanIface::enableRequest_1_4(
-    uint16_t cmd_id, const V1_4::NanEnableRequest& msg1,
-    const V1_2::NanConfigRequestSupplemental& msg2,
-    enableRequest_1_4_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::enableRequest_1_4Internal,
-                           hidl_status_cb, cmd_id, msg1, msg2);
-}
-
-Return<void> WifiNanIface::configRequest_1_4(
-    uint16_t cmd_id, const V1_4::NanConfigRequest& msg1,
-    const V1_2::NanConfigRequestSupplemental& msg2,
-    configRequest_1_4_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::configRequest_1_4Internal,
-                           hidl_status_cb, cmd_id, msg1, msg2);
-}
-
-Return<void> WifiNanIface::registerEventCallback_1_5(
-    const sp<IWifiNanIfaceEventCallback>& callback,
-    registerEventCallback_1_5_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::registerEventCallback_1_5Internal,
-                           hidl_status_cb, callback);
-}
-
-Return<void> WifiNanIface::enableRequest_1_5(
-    uint16_t cmd_id, const V1_4::NanEnableRequest& msg1,
-    const NanConfigRequestSupplemental& msg2,
-    enableRequest_1_5_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::enableRequest_1_5Internal,
-                           hidl_status_cb, cmd_id, msg1, msg2);
-}
-
-Return<void> WifiNanIface::configRequest_1_5(
-    uint16_t cmd_id, const V1_4::NanConfigRequest& msg1,
-    const NanConfigRequestSupplemental& msg2,
-    configRequest_1_5_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::configRequest_1_5Internal,
-                           hidl_status_cb, cmd_id, msg1, msg2);
-}
-
-Return<void> WifiNanIface::getCapabilitiesRequest_1_5(
-    uint16_t cmd_id, getCapabilitiesRequest_1_5_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::getCapabilitiesRequest_1_5Internal,
-                           hidl_status_cb, cmd_id);
-}
-
-std::pair<WifiStatus, std::string> WifiNanIface::getNameInternal() {
-    return {createWifiStatus(WifiStatusCode::SUCCESS), ifname_};
-}
-
-std::pair<WifiStatus, IfaceType> WifiNanIface::getTypeInternal() {
-    return {createWifiStatus(WifiStatusCode::SUCCESS), IfaceType::NAN};
-}
-
-WifiStatus WifiNanIface::registerEventCallbackInternal(
-    const sp<V1_0::IWifiNanIfaceEventCallback>& callback) {
-    if (!event_cb_handler_.addCallback(callback)) {
-        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-    }
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-WifiStatus WifiNanIface::getCapabilitiesRequestInternal(uint16_t /* cmd_id */) {
-    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
-}
-
-WifiStatus WifiNanIface::enableRequestInternal(
-    uint16_t /* cmd_id */, const V1_0::NanEnableRequest& /* msg */) {
-    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
-}
-
-WifiStatus WifiNanIface::configRequestInternal(
-    uint16_t /* cmd_id */, const V1_0::NanConfigRequest& /* msg */) {
-    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
-}
-
-WifiStatus WifiNanIface::disableRequestInternal(uint16_t cmd_id) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->nanDisableRequest(ifname_, cmd_id);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiNanIface::startPublishRequestInternal(
-    uint16_t cmd_id, const NanPublishRequest& msg) {
-    legacy_hal::NanPublishRequest legacy_msg;
-    if (!hidl_struct_util::convertHidlNanPublishRequestToLegacy(msg,
-                                                                &legacy_msg)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->nanPublishRequest(ifname_, cmd_id, legacy_msg);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiNanIface::stopPublishRequestInternal(uint16_t cmd_id,
-                                                    uint8_t sessionId) {
-    legacy_hal::NanPublishCancelRequest legacy_msg;
-    legacy_msg.publish_id = sessionId;
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->nanPublishCancelRequest(ifname_, cmd_id,
-                                                    legacy_msg);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiNanIface::startSubscribeRequestInternal(
-    uint16_t cmd_id, const NanSubscribeRequest& msg) {
-    legacy_hal::NanSubscribeRequest legacy_msg;
-    if (!hidl_struct_util::convertHidlNanSubscribeRequestToLegacy(
-            msg, &legacy_msg)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->nanSubscribeRequest(ifname_, cmd_id, legacy_msg);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiNanIface::stopSubscribeRequestInternal(uint16_t cmd_id,
-                                                      uint8_t sessionId) {
-    legacy_hal::NanSubscribeCancelRequest legacy_msg;
-    legacy_msg.subscribe_id = sessionId;
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->nanSubscribeCancelRequest(ifname_, cmd_id,
-                                                      legacy_msg);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiNanIface::transmitFollowupRequestInternal(
-    uint16_t cmd_id, const NanTransmitFollowupRequest& msg) {
-    legacy_hal::NanTransmitFollowupRequest legacy_msg;
-    if (!hidl_struct_util::convertHidlNanTransmitFollowupRequestToLegacy(
-            msg, &legacy_msg)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->nanTransmitFollowupRequest(ifname_, cmd_id,
-                                                       legacy_msg);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiNanIface::createDataInterfaceRequestInternal(
-    uint16_t cmd_id, const std::string& iface_name) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->nanDataInterfaceCreate(ifname_, cmd_id, iface_name);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-WifiStatus WifiNanIface::deleteDataInterfaceRequestInternal(
-    uint16_t cmd_id, const std::string& iface_name) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->nanDataInterfaceDelete(ifname_, cmd_id, iface_name);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-WifiStatus WifiNanIface::initiateDataPathRequestInternal(
-    uint16_t cmd_id, const NanInitiateDataPathRequest& msg) {
-    legacy_hal::NanDataPathInitiatorRequest legacy_msg;
-    if (!hidl_struct_util::convertHidlNanDataPathInitiatorRequestToLegacy(
-            msg, &legacy_msg)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->nanDataRequestInitiator(ifname_, cmd_id,
-                                                    legacy_msg);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-WifiStatus WifiNanIface::respondToDataPathIndicationRequestInternal(
-    uint16_t cmd_id, const NanRespondToDataPathIndicationRequest& msg) {
-    legacy_hal::NanDataPathIndicationResponse legacy_msg;
-    if (!hidl_struct_util::convertHidlNanDataPathIndicationResponseToLegacy(
-            msg, &legacy_msg)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->nanDataIndicationResponse(ifname_, cmd_id,
-                                                      legacy_msg);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-WifiStatus WifiNanIface::terminateDataPathRequestInternal(
-    uint16_t cmd_id, uint32_t ndpInstanceId) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->nanDataEnd(ifname_, cmd_id, ndpInstanceId);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiNanIface::registerEventCallback_1_2Internal(
-    const sp<V1_2::IWifiNanIfaceEventCallback>& callback) {
-    sp<V1_0::IWifiNanIfaceEventCallback> callback_1_0 = callback;
-    if (!event_cb_handler_.addCallback(callback_1_0)) {
-        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-    }
-    if (!event_cb_handler_1_2_.addCallback(callback)) {
-        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-    }
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-WifiStatus WifiNanIface::enableRequest_1_2Internal(
-    uint16_t /* cmd_id */, const V1_0::NanEnableRequest& /* msg1 */,
-    const V1_2::NanConfigRequestSupplemental& /* msg2 */) {
-    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
-}
-
-WifiStatus WifiNanIface::configRequest_1_2Internal(
-    uint16_t /* cmd_id */, const V1_0::NanConfigRequest& /* msg1 */,
-    const V1_2::NanConfigRequestSupplemental& /* msg2 */) {
-    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
-}
-
-WifiStatus WifiNanIface::enableRequest_1_4Internal(
-    uint16_t /* cmd_id */, const V1_4::NanEnableRequest& /* msg1 */,
-    const V1_2::NanConfigRequestSupplemental& /* msg2 */) {
-    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
-}
-
-WifiStatus WifiNanIface::configRequest_1_4Internal(
-    uint16_t /* cmd_id */, const V1_4::NanConfigRequest& /* msg1 */,
-    const V1_2::NanConfigRequestSupplemental& /* msg2 */) {
-    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
-}
-
-WifiStatus WifiNanIface::registerEventCallback_1_5Internal(
-    const sp<IWifiNanIfaceEventCallback>& callback) {
-    sp<V1_0::IWifiNanIfaceEventCallback> callback_1_0 = callback;
-    if (!event_cb_handler_.addCallback(callback_1_0)) {
-        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-    }
-    sp<V1_2::IWifiNanIfaceEventCallback> callback_1_2 = callback;
-    if (!event_cb_handler_1_2_.addCallback(callback_1_2)) {
-        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-    }
-    if (!event_cb_handler_1_5_.addCallback(callback)) {
-        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-    }
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-WifiStatus WifiNanIface::getCapabilitiesRequest_1_5Internal(uint16_t cmd_id) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->nanGetCapabilities(ifname_, cmd_id);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiNanIface::enableRequest_1_5Internal(
-    uint16_t cmd_id, const V1_4::NanEnableRequest& msg1,
-    const NanConfigRequestSupplemental& msg2) {
-    legacy_hal::NanEnableRequest legacy_msg;
-    if (!hidl_struct_util::convertHidlNanEnableRequest_1_5ToLegacy(
-            msg1, msg2, &legacy_msg)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->nanEnableRequest(ifname_, cmd_id, legacy_msg);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiNanIface::configRequest_1_5Internal(
-    uint16_t cmd_id, const V1_4::NanConfigRequest& msg1,
-    const NanConfigRequestSupplemental& msg2) {
-    legacy_hal::NanConfigRequest legacy_msg;
-    if (!hidl_struct_util::convertHidlNanConfigRequest_1_5ToLegacy(
-            msg1, msg2, &legacy_msg)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->nanConfigRequest(ifname_, cmd_id, legacy_msg);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.5/default/wifi_nan_iface.h b/wifi/1.5/default/wifi_nan_iface.h
deleted file mode 100644
index fb9c047..0000000
--- a/wifi/1.5/default/wifi_nan_iface.h
+++ /dev/null
@@ -1,212 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef WIFI_NAN_IFACE_H_
-#define WIFI_NAN_IFACE_H_
-
-#include <android-base/macros.h>
-#include <android/hardware/wifi/1.5/IWifiNanIface.h>
-#include <android/hardware/wifi/1.5/IWifiNanIfaceEventCallback.h>
-
-#include "hidl_callback_util.h"
-#include "wifi_iface_util.h"
-#include "wifi_legacy_hal.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-using namespace android::hardware::wifi::V1_0;
-using namespace android::hardware::wifi::V1_2;
-
-/**
- * HIDL interface object used to control a NAN Iface instance.
- */
-class WifiNanIface : public V1_5::IWifiNanIface {
-   public:
-    WifiNanIface(const std::string& ifname, bool is_dedicated_iface,
-                 const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
-                 const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util);
-    // Refer to |WifiChip::invalidate()|.
-    void invalidate();
-    bool isValid();
-    std::string getName();
-
-    // HIDL methods exposed.
-    Return<void> getName(getName_cb hidl_status_cb) override;
-    Return<void> getType(getType_cb hidl_status_cb) override;
-    Return<void> registerEventCallback(
-        const sp<V1_0::IWifiNanIfaceEventCallback>& callback,
-        registerEventCallback_cb hidl_status_cb) override;
-    Return<void> getCapabilitiesRequest(
-        uint16_t cmd_id, getCapabilitiesRequest_cb hidl_status_cb) override;
-    Return<void> enableRequest(uint16_t cmd_id,
-                               const V1_0::NanEnableRequest& msg,
-                               enableRequest_cb hidl_status_cb) override;
-    Return<void> configRequest(uint16_t cmd_id,
-                               const V1_0::NanConfigRequest& msg,
-                               configRequest_cb hidl_status_cb) override;
-    Return<void> disableRequest(uint16_t cmd_id,
-                                disableRequest_cb hidl_status_cb) override;
-    Return<void> startPublishRequest(
-        uint16_t cmd_id, const NanPublishRequest& msg,
-        startPublishRequest_cb hidl_status_cb) override;
-    Return<void> stopPublishRequest(
-        uint16_t cmd_id, uint8_t sessionId,
-        stopPublishRequest_cb hidl_status_cb) override;
-    Return<void> startSubscribeRequest(
-        uint16_t cmd_id, const NanSubscribeRequest& msg,
-        startSubscribeRequest_cb hidl_status_cb) override;
-    Return<void> stopSubscribeRequest(
-        uint16_t cmd_id, uint8_t sessionId,
-        stopSubscribeRequest_cb hidl_status_cb) override;
-    Return<void> transmitFollowupRequest(
-        uint16_t cmd_id, const NanTransmitFollowupRequest& msg,
-        transmitFollowupRequest_cb hidl_status_cb) override;
-    Return<void> createDataInterfaceRequest(
-        uint16_t cmd_id, const hidl_string& iface_name,
-        createDataInterfaceRequest_cb hidl_status_cb) override;
-    Return<void> deleteDataInterfaceRequest(
-        uint16_t cmd_id, const hidl_string& iface_name,
-        deleteDataInterfaceRequest_cb hidl_status_cb) override;
-    Return<void> initiateDataPathRequest(
-        uint16_t cmd_id, const NanInitiateDataPathRequest& msg,
-        initiateDataPathRequest_cb hidl_status_cb) override;
-    Return<void> respondToDataPathIndicationRequest(
-        uint16_t cmd_id, const NanRespondToDataPathIndicationRequest& msg,
-        respondToDataPathIndicationRequest_cb hidl_status_cb) override;
-    Return<void> terminateDataPathRequest(
-        uint16_t cmd_id, uint32_t ndpInstanceId,
-        terminateDataPathRequest_cb hidl_status_cb) override;
-
-    Return<void> registerEventCallback_1_2(
-        const sp<V1_2::IWifiNanIfaceEventCallback>& callback,
-        registerEventCallback_1_2_cb hidl_status_cb) override;
-    Return<void> enableRequest_1_2(
-        uint16_t cmd_id, const V1_0::NanEnableRequest& msg1,
-        const V1_2::NanConfigRequestSupplemental& msg2,
-        enableRequest_1_2_cb hidl_status_cb) override;
-    Return<void> configRequest_1_2(
-        uint16_t cmd_id, const V1_0::NanConfigRequest& msg1,
-        const V1_2::NanConfigRequestSupplemental& msg2,
-        configRequest_1_2_cb hidl_status_cb) override;
-    Return<void> enableRequest_1_4(
-        uint16_t cmd_id, const V1_4::NanEnableRequest& msg1,
-        const V1_2::NanConfigRequestSupplemental& msg2,
-        enableRequest_1_4_cb hidl_status_cb) override;
-    Return<void> configRequest_1_4(
-        uint16_t cmd_id, const V1_4::NanConfigRequest& msg1,
-        const V1_2::NanConfigRequestSupplemental& msg2,
-        configRequest_1_4_cb hidl_status_cb) override;
-    Return<void> registerEventCallback_1_5(
-        const sp<IWifiNanIfaceEventCallback>& callback,
-        registerEventCallback_1_5_cb hidl_status_cb) override;
-    Return<void> enableRequest_1_5(
-        uint16_t cmd_id, const V1_4::NanEnableRequest& msg1,
-        const NanConfigRequestSupplemental& msg2,
-        enableRequest_1_4_cb hidl_status_cb) override;
-    Return<void> configRequest_1_5(
-        uint16_t cmd_id, const V1_4::NanConfigRequest& msg1,
-        const NanConfigRequestSupplemental& msg2,
-        configRequest_1_4_cb hidl_status_cb) override;
-    Return<void> getCapabilitiesRequest_1_5(
-        uint16_t cmd_id, getCapabilitiesRequest_cb hidl_status_cb) override;
-
-   private:
-    // Corresponding worker functions for the HIDL methods.
-    std::pair<WifiStatus, std::string> getNameInternal();
-    std::pair<WifiStatus, IfaceType> getTypeInternal();
-    WifiStatus registerEventCallbackInternal(
-        const sp<V1_0::IWifiNanIfaceEventCallback>& callback);
-    WifiStatus getCapabilitiesRequestInternal(uint16_t cmd_id);
-    WifiStatus enableRequestInternal(uint16_t cmd_id,
-                                     const V1_0::NanEnableRequest& msg);
-    WifiStatus configRequestInternal(uint16_t cmd_id,
-                                     const V1_0::NanConfigRequest& msg);
-    WifiStatus disableRequestInternal(uint16_t cmd_id);
-    WifiStatus startPublishRequestInternal(uint16_t cmd_id,
-                                           const NanPublishRequest& msg);
-    WifiStatus stopPublishRequestInternal(uint16_t cmd_id, uint8_t sessionId);
-    WifiStatus startSubscribeRequestInternal(uint16_t cmd_id,
-                                             const NanSubscribeRequest& msg);
-    WifiStatus stopSubscribeRequestInternal(uint16_t cmd_id, uint8_t sessionId);
-    WifiStatus transmitFollowupRequestInternal(
-        uint16_t cmd_id, const NanTransmitFollowupRequest& msg);
-    WifiStatus createDataInterfaceRequestInternal(
-        uint16_t cmd_id, const std::string& iface_name);
-    WifiStatus deleteDataInterfaceRequestInternal(
-        uint16_t cmd_id, const std::string& iface_name);
-    WifiStatus initiateDataPathRequestInternal(
-        uint16_t cmd_id, const NanInitiateDataPathRequest& msg);
-    WifiStatus respondToDataPathIndicationRequestInternal(
-        uint16_t cmd_id, const NanRespondToDataPathIndicationRequest& msg);
-    WifiStatus terminateDataPathRequestInternal(uint16_t cmd_id,
-                                                uint32_t ndpInstanceId);
-
-    WifiStatus registerEventCallback_1_2Internal(
-        const sp<V1_2::IWifiNanIfaceEventCallback>& callback);
-    WifiStatus enableRequest_1_2Internal(
-        uint16_t cmd_id, const V1_0::NanEnableRequest& msg1,
-        const V1_2::NanConfigRequestSupplemental& msg2);
-    WifiStatus configRequest_1_2Internal(
-        uint16_t cmd_id, const V1_0::NanConfigRequest& msg,
-        const V1_2::NanConfigRequestSupplemental& msg2);
-    WifiStatus enableRequest_1_4Internal(
-        uint16_t cmd_id, const V1_4::NanEnableRequest& msg1,
-        const V1_2::NanConfigRequestSupplemental& msg2);
-    WifiStatus configRequest_1_4Internal(
-        uint16_t cmd_id, const V1_4::NanConfigRequest& msg,
-        const V1_2::NanConfigRequestSupplemental& msg2);
-    WifiStatus registerEventCallback_1_5Internal(
-        const sp<IWifiNanIfaceEventCallback>& callback);
-    WifiStatus enableRequest_1_5Internal(
-        uint16_t cmd_id, const V1_4::NanEnableRequest& msg1,
-        const NanConfigRequestSupplemental& msg2);
-    WifiStatus configRequest_1_5Internal(
-        uint16_t cmd_id, const V1_4::NanConfigRequest& msg,
-        const NanConfigRequestSupplemental& msg2);
-    WifiStatus getCapabilitiesRequest_1_5Internal(uint16_t cmd_id);
-
-    // all 1_0 and descendant callbacks
-    std::set<sp<V1_0::IWifiNanIfaceEventCallback>> getEventCallbacks();
-    // all 1_2 and descendant callbacks
-    std::set<sp<V1_2::IWifiNanIfaceEventCallback>> getEventCallbacks_1_2();
-    // all 1_5 and descendant callbacks
-    std::set<sp<IWifiNanIfaceEventCallback>> getEventCallbacks_1_5();
-
-    std::string ifname_;
-    bool is_dedicated_iface_;
-    std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
-    std::weak_ptr<iface_util::WifiIfaceUtil> iface_util_;
-    bool is_valid_;
-    hidl_callback_util::HidlCallbackHandler<V1_0::IWifiNanIfaceEventCallback>
-        event_cb_handler_;
-    hidl_callback_util::HidlCallbackHandler<V1_2::IWifiNanIfaceEventCallback>
-        event_cb_handler_1_2_;
-    hidl_callback_util::HidlCallbackHandler<IWifiNanIfaceEventCallback>
-        event_cb_handler_1_5_;
-
-    DISALLOW_COPY_AND_ASSIGN(WifiNanIface);
-};
-
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // WIFI_NAN_IFACE_H_
diff --git a/wifi/1.5/default/wifi_p2p_iface.cpp b/wifi/1.5/default/wifi_p2p_iface.cpp
deleted file mode 100644
index b8893da..0000000
--- a/wifi/1.5/default/wifi_p2p_iface.cpp
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-
-#include "hidl_return_util.h"
-#include "wifi_p2p_iface.h"
-#include "wifi_status_util.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-using hidl_return_util::validateAndCall;
-
-WifiP2pIface::WifiP2pIface(
-    const std::string& ifname,
-    const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal)
-    : ifname_(ifname), legacy_hal_(legacy_hal), is_valid_(true) {}
-
-void WifiP2pIface::invalidate() {
-    legacy_hal_.reset();
-    is_valid_ = false;
-}
-
-bool WifiP2pIface::isValid() { return is_valid_; }
-
-std::string WifiP2pIface::getName() { return ifname_; }
-
-Return<void> WifiP2pIface::getName(getName_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiP2pIface::getNameInternal, hidl_status_cb);
-}
-
-Return<void> WifiP2pIface::getType(getType_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiP2pIface::getTypeInternal, hidl_status_cb);
-}
-
-std::pair<WifiStatus, std::string> WifiP2pIface::getNameInternal() {
-    return {createWifiStatus(WifiStatusCode::SUCCESS), ifname_};
-}
-
-std::pair<WifiStatus, IfaceType> WifiP2pIface::getTypeInternal() {
-    return {createWifiStatus(WifiStatusCode::SUCCESS), IfaceType::P2P};
-}
-
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.5/default/wifi_p2p_iface.h b/wifi/1.5/default/wifi_p2p_iface.h
deleted file mode 100644
index c1adc50..0000000
--- a/wifi/1.5/default/wifi_p2p_iface.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef WIFI_P2P_IFACE_H_
-#define WIFI_P2P_IFACE_H_
-
-#include <android-base/macros.h>
-#include <android/hardware/wifi/1.0/IWifiP2pIface.h>
-
-#include "wifi_legacy_hal.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-using namespace android::hardware::wifi::V1_0;
-
-/**
- * HIDL interface object used to control a P2P Iface instance.
- */
-class WifiP2pIface : public V1_0::IWifiP2pIface {
-   public:
-    WifiP2pIface(const std::string& ifname,
-                 const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal);
-    // Refer to |WifiChip::invalidate()|.
-    void invalidate();
-    bool isValid();
-    std::string getName();
-
-    // HIDL methods exposed.
-    Return<void> getName(getName_cb hidl_status_cb) override;
-    Return<void> getType(getType_cb hidl_status_cb) override;
-
-   private:
-    // Corresponding worker functions for the HIDL methods.
-    std::pair<WifiStatus, std::string> getNameInternal();
-    std::pair<WifiStatus, IfaceType> getTypeInternal();
-
-    std::string ifname_;
-    std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
-    bool is_valid_;
-
-    DISALLOW_COPY_AND_ASSIGN(WifiP2pIface);
-};
-
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // WIFI_P2P_IFACE_H_
diff --git a/wifi/1.5/default/wifi_rtt_controller.cpp b/wifi/1.5/default/wifi_rtt_controller.cpp
deleted file mode 100644
index a0f9969..0000000
--- a/wifi/1.5/default/wifi_rtt_controller.cpp
+++ /dev/null
@@ -1,351 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-
-#include "hidl_return_util.h"
-#include "hidl_struct_util.h"
-#include "wifi_rtt_controller.h"
-#include "wifi_status_util.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-using hidl_return_util::validateAndCall;
-
-WifiRttController::WifiRttController(
-    const std::string& iface_name, const sp<IWifiIface>& bound_iface,
-    const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal)
-    : ifname_(iface_name),
-      bound_iface_(bound_iface),
-      legacy_hal_(legacy_hal),
-      is_valid_(true) {}
-
-void WifiRttController::invalidate() {
-    legacy_hal_.reset();
-    event_callbacks_.clear();
-    is_valid_ = false;
-}
-
-bool WifiRttController::isValid() { return is_valid_; }
-
-std::vector<sp<V1_4::IWifiRttControllerEventCallback>>
-WifiRttController::getEventCallbacks() {
-    return event_callbacks_;
-}
-
-std::string WifiRttController::getIfaceName() { return ifname_; }
-
-Return<void> WifiRttController::getBoundIface(getBoundIface_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
-        &WifiRttController::getBoundIfaceInternal, hidl_status_cb);
-}
-
-Return<void> WifiRttController::registerEventCallback(
-    const sp<V1_0::IWifiRttControllerEventCallback>& callback,
-    registerEventCallback_cb hidl_status_cb) {
-    return validateAndCall(this,
-                           WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
-                           &WifiRttController::registerEventCallbackInternal,
-                           hidl_status_cb, callback);
-}
-
-Return<void> WifiRttController::rangeRequest(
-    uint32_t cmd_id, const hidl_vec<V1_0::RttConfig>& rtt_configs,
-    rangeRequest_cb hidl_status_cb) {
-    return validateAndCall(this,
-                           WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
-                           &WifiRttController::rangeRequestInternal,
-                           hidl_status_cb, cmd_id, rtt_configs);
-}
-
-Return<void> WifiRttController::rangeCancel(
-    uint32_t cmd_id, const hidl_vec<hidl_array<uint8_t, 6>>& addrs,
-    rangeCancel_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
-        &WifiRttController::rangeCancelInternal, hidl_status_cb, cmd_id, addrs);
-}
-
-Return<void> WifiRttController::getCapabilities(
-    getCapabilities_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
-        &WifiRttController::getCapabilitiesInternal, hidl_status_cb);
-}
-
-Return<void> WifiRttController::setLci(uint32_t cmd_id,
-                                       const RttLciInformation& lci,
-                                       setLci_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
-        &WifiRttController::setLciInternal, hidl_status_cb, cmd_id, lci);
-}
-
-Return<void> WifiRttController::setLcr(uint32_t cmd_id,
-                                       const RttLcrInformation& lcr,
-                                       setLcr_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
-        &WifiRttController::setLcrInternal, hidl_status_cb, cmd_id, lcr);
-}
-
-Return<void> WifiRttController::getResponderInfo(
-    getResponderInfo_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
-        &WifiRttController::getResponderInfoInternal, hidl_status_cb);
-}
-
-Return<void> WifiRttController::enableResponder(
-    uint32_t cmd_id, const WifiChannelInfo& channel_hint,
-    uint32_t max_duration_seconds, const V1_0::RttResponder& info,
-    enableResponder_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
-        &WifiRttController::enableResponderInternal, hidl_status_cb, cmd_id,
-        channel_hint, max_duration_seconds, info);
-}
-
-Return<void> WifiRttController::disableResponder(
-    uint32_t cmd_id, disableResponder_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
-        &WifiRttController::disableResponderInternal, hidl_status_cb, cmd_id);
-}
-
-Return<void> WifiRttController::registerEventCallback_1_4(
-    const sp<V1_4::IWifiRttControllerEventCallback>& callback,
-    registerEventCallback_1_4_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
-        &WifiRttController::registerEventCallbackInternal_1_4, hidl_status_cb,
-        callback);
-}
-
-Return<void> WifiRttController::rangeRequest_1_4(
-    uint32_t cmd_id, const hidl_vec<V1_4::RttConfig>& rtt_configs,
-    rangeRequest_1_4_cb hidl_status_cb) {
-    return validateAndCall(this,
-                           WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
-                           &WifiRttController::rangeRequestInternal_1_4,
-                           hidl_status_cb, cmd_id, rtt_configs);
-}
-
-Return<void> WifiRttController::getCapabilities_1_4(
-    getCapabilities_1_4_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
-        &WifiRttController::getCapabilitiesInternal_1_4, hidl_status_cb);
-}
-
-Return<void> WifiRttController::getResponderInfo_1_4(
-    getResponderInfo_1_4_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
-        &WifiRttController::getResponderInfoInternal_1_4, hidl_status_cb);
-}
-
-Return<void> WifiRttController::enableResponder_1_4(
-    uint32_t cmd_id, const WifiChannelInfo& channel_hint,
-    uint32_t max_duration_seconds, const V1_4::RttResponder& info,
-    enableResponder_1_4_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
-        &WifiRttController::enableResponderInternal_1_4, hidl_status_cb, cmd_id,
-        channel_hint, max_duration_seconds, info);
-}
-
-std::pair<WifiStatus, sp<IWifiIface>>
-WifiRttController::getBoundIfaceInternal() {
-    return {createWifiStatus(WifiStatusCode::SUCCESS), bound_iface_};
-}
-
-WifiStatus WifiRttController::registerEventCallbackInternal(
-    const sp<V1_0::IWifiRttControllerEventCallback>& /* callback */) {
-    // Deprecated support for this api
-    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
-}
-
-WifiStatus WifiRttController::rangeRequestInternal(
-    uint32_t /* cmd_id */,
-    const std::vector<V1_0::RttConfig>& /* rtt_configs */) {
-    // Deprecated support for this api
-    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
-}
-
-WifiStatus WifiRttController::rangeCancelInternal(
-    uint32_t cmd_id, const std::vector<hidl_array<uint8_t, 6>>& addrs) {
-    std::vector<std::array<uint8_t, 6>> legacy_addrs;
-    for (const auto& addr : addrs) {
-        legacy_addrs.push_back(addr);
-    }
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->cancelRttRangeRequest(ifname_, cmd_id,
-                                                  legacy_addrs);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-std::pair<WifiStatus, V1_0::RttCapabilities>
-WifiRttController::getCapabilitiesInternal() {
-    // Deprecated support for this api
-    return {createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED), {}};
-}
-
-WifiStatus WifiRttController::setLciInternal(uint32_t cmd_id,
-                                             const RttLciInformation& lci) {
-    legacy_hal::wifi_lci_information legacy_lci;
-    if (!hidl_struct_util::convertHidlRttLciInformationToLegacy(lci,
-                                                                &legacy_lci)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->setRttLci(ifname_, cmd_id, legacy_lci);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiRttController::setLcrInternal(uint32_t cmd_id,
-                                             const RttLcrInformation& lcr) {
-    legacy_hal::wifi_lcr_information legacy_lcr;
-    if (!hidl_struct_util::convertHidlRttLcrInformationToLegacy(lcr,
-                                                                &legacy_lcr)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->setRttLcr(ifname_, cmd_id, legacy_lcr);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-std::pair<WifiStatus, V1_0::RttResponder>
-WifiRttController::getResponderInfoInternal() {
-    // Deprecated support for this api
-    return {createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED), {}};
-}
-
-WifiStatus WifiRttController::enableResponderInternal(
-    uint32_t /* cmd_id */, const WifiChannelInfo& /* channel_hint */,
-    uint32_t /* max_duration_seconds */, const V1_0::RttResponder& /* info */) {
-    // Deprecated support for this api
-    return {createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED)};
-}
-
-WifiStatus WifiRttController::disableResponderInternal(uint32_t cmd_id) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->disableRttResponder(ifname_, cmd_id);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiRttController::registerEventCallbackInternal_1_4(
-    const sp<V1_4::IWifiRttControllerEventCallback>& callback) {
-    // TODO(b/31632518): remove the callback when the client is destroyed
-    event_callbacks_.emplace_back(callback);
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-WifiStatus WifiRttController::rangeRequestInternal_1_4(
-    uint32_t cmd_id, const std::vector<V1_4::RttConfig>& rtt_configs) {
-    std::vector<legacy_hal::wifi_rtt_config> legacy_configs;
-    if (!hidl_struct_util::convertHidlVectorOfRttConfigToLegacy(
-            rtt_configs, &legacy_configs)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    android::wp<WifiRttController> weak_ptr_this(this);
-    const auto& on_results_callback =
-        [weak_ptr_this](
-            legacy_hal::wifi_request_id id,
-            const std::vector<const legacy_hal::wifi_rtt_result*>& results) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            std::vector<V1_4::RttResult> hidl_results;
-            if (!hidl_struct_util::convertLegacyVectorOfRttResultToHidl(
-                    results, &hidl_results)) {
-                LOG(ERROR) << "Failed to convert rtt results to HIDL structs";
-                return;
-            }
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                callback->onResults_1_4(id, hidl_results);
-            }
-        };
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->startRttRangeRequest(
-            ifname_, cmd_id, legacy_configs, on_results_callback);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-std::pair<WifiStatus, V1_4::RttCapabilities>
-WifiRttController::getCapabilitiesInternal_1_4() {
-    legacy_hal::wifi_error legacy_status;
-    legacy_hal::wifi_rtt_capabilities legacy_caps;
-    std::tie(legacy_status, legacy_caps) =
-        legacy_hal_.lock()->getRttCapabilities(ifname_);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        return {createWifiStatusFromLegacyError(legacy_status), {}};
-    }
-    V1_4::RttCapabilities hidl_caps;
-    if (!hidl_struct_util::convertLegacyRttCapabilitiesToHidl(legacy_caps,
-                                                              &hidl_caps)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
-}
-
-std::pair<WifiStatus, V1_4::RttResponder>
-WifiRttController::getResponderInfoInternal_1_4() {
-    legacy_hal::wifi_error legacy_status;
-    legacy_hal::wifi_rtt_responder legacy_responder;
-    std::tie(legacy_status, legacy_responder) =
-        legacy_hal_.lock()->getRttResponderInfo(ifname_);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        return {createWifiStatusFromLegacyError(legacy_status), {}};
-    }
-    V1_4::RttResponder hidl_responder;
-    if (!hidl_struct_util::convertLegacyRttResponderToHidl(legacy_responder,
-                                                           &hidl_responder)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_responder};
-}
-
-WifiStatus WifiRttController::enableResponderInternal_1_4(
-    uint32_t cmd_id, const WifiChannelInfo& channel_hint,
-    uint32_t max_duration_seconds, const V1_4::RttResponder& info) {
-    legacy_hal::wifi_channel_info legacy_channel_info;
-    if (!hidl_struct_util::convertHidlWifiChannelInfoToLegacy(
-            channel_hint, &legacy_channel_info)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    legacy_hal::wifi_rtt_responder legacy_responder;
-    if (!hidl_struct_util::convertHidlRttResponderToLegacy(info,
-                                                           &legacy_responder)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->enableRttResponder(
-            ifname_, cmd_id, legacy_channel_info, max_duration_seconds,
-            legacy_responder);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.5/default/wifi_rtt_controller.h b/wifi/1.5/default/wifi_rtt_controller.h
deleted file mode 100644
index 9ac3e06..0000000
--- a/wifi/1.5/default/wifi_rtt_controller.h
+++ /dev/null
@@ -1,130 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef WIFI_RTT_CONTROLLER_H_
-#define WIFI_RTT_CONTROLLER_H_
-
-#include <android-base/macros.h>
-#include <android/hardware/wifi/1.0/IWifiIface.h>
-#include <android/hardware/wifi/1.4/IWifiRttController.h>
-#include <android/hardware/wifi/1.4/IWifiRttControllerEventCallback.h>
-
-#include "wifi_legacy_hal.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-
-/**
- * HIDL interface object used to control all RTT operations.
- */
-class WifiRttController : public V1_4::IWifiRttController {
-   public:
-    WifiRttController(
-        const std::string& iface_name, const sp<IWifiIface>& bound_iface,
-        const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal);
-    // Refer to |WifiChip::invalidate()|.
-    void invalidate();
-    bool isValid();
-    std::vector<sp<V1_4::IWifiRttControllerEventCallback>> getEventCallbacks();
-    std::string getIfaceName();
-
-    // HIDL methods exposed.
-    Return<void> getBoundIface(getBoundIface_cb hidl_status_cb) override;
-    Return<void> registerEventCallback(
-        const sp<V1_0::IWifiRttControllerEventCallback>& callback,
-        registerEventCallback_cb hidl_status_cb) override;
-    Return<void> rangeRequest(uint32_t cmd_id,
-                              const hidl_vec<V1_0::RttConfig>& rtt_configs,
-                              rangeRequest_cb hidl_status_cb) override;
-    Return<void> rangeCancel(uint32_t cmd_id,
-                             const hidl_vec<hidl_array<uint8_t, 6>>& addrs,
-                             rangeCancel_cb hidl_status_cb) override;
-    Return<void> getCapabilities(getCapabilities_cb hidl_status_cb) override;
-    Return<void> setLci(uint32_t cmd_id, const RttLciInformation& lci,
-                        setLci_cb hidl_status_cb) override;
-    Return<void> setLcr(uint32_t cmd_id, const RttLcrInformation& lcr,
-                        setLcr_cb hidl_status_cb) override;
-    Return<void> getResponderInfo(getResponderInfo_cb hidl_status_cb) override;
-    Return<void> enableResponder(uint32_t cmd_id,
-                                 const WifiChannelInfo& channel_hint,
-                                 uint32_t max_duration_seconds,
-                                 const V1_0::RttResponder& info,
-                                 enableResponder_cb hidl_status_cb) override;
-    Return<void> disableResponder(uint32_t cmd_id,
-                                  disableResponder_cb hidl_status_cb) override;
-    Return<void> registerEventCallback_1_4(
-        const sp<V1_4::IWifiRttControllerEventCallback>& callback,
-        registerEventCallback_1_4_cb hidl_status_cb) override;
-    Return<void> rangeRequest_1_4(uint32_t cmd_id,
-                                  const hidl_vec<V1_4::RttConfig>& rtt_configs,
-                                  rangeRequest_1_4_cb hidl_status_cb) override;
-    Return<void> getCapabilities_1_4(
-        getCapabilities_1_4_cb hidl_status_cb) override;
-    Return<void> getResponderInfo_1_4(
-        getResponderInfo_1_4_cb hidl_status_cb) override;
-    Return<void> enableResponder_1_4(
-        uint32_t cmd_id, const WifiChannelInfo& channel_hint,
-        uint32_t max_duration_seconds, const V1_4::RttResponder& info,
-        enableResponder_1_4_cb hidl_status_cb) override;
-
-   private:
-    // Corresponding worker functions for the HIDL methods.
-    std::pair<WifiStatus, sp<IWifiIface>> getBoundIfaceInternal();
-    WifiStatus registerEventCallbackInternal(
-        const sp<V1_0::IWifiRttControllerEventCallback>& callback);
-    WifiStatus rangeRequestInternal(
-        uint32_t cmd_id, const std::vector<V1_0::RttConfig>& rtt_configs);
-    WifiStatus rangeCancelInternal(
-        uint32_t cmd_id, const std::vector<hidl_array<uint8_t, 6>>& addrs);
-    std::pair<WifiStatus, V1_0::RttCapabilities> getCapabilitiesInternal();
-    WifiStatus setLciInternal(uint32_t cmd_id, const RttLciInformation& lci);
-    WifiStatus setLcrInternal(uint32_t cmd_id, const RttLcrInformation& lcr);
-    std::pair<WifiStatus, V1_0::RttResponder> getResponderInfoInternal();
-    WifiStatus enableResponderInternal(uint32_t cmd_id,
-                                       const WifiChannelInfo& channel_hint,
-                                       uint32_t max_duration_seconds,
-                                       const V1_0::RttResponder& info);
-    WifiStatus disableResponderInternal(uint32_t cmd_id);
-    WifiStatus registerEventCallbackInternal_1_4(
-        const sp<V1_4::IWifiRttControllerEventCallback>& callback);
-    WifiStatus rangeRequestInternal_1_4(
-        uint32_t cmd_id, const std::vector<V1_4::RttConfig>& rtt_configs);
-    std::pair<WifiStatus, V1_4::RttCapabilities> getCapabilitiesInternal_1_4();
-    std::pair<WifiStatus, V1_4::RttResponder> getResponderInfoInternal_1_4();
-    WifiStatus enableResponderInternal_1_4(uint32_t cmd_id,
-                                           const WifiChannelInfo& channel_hint,
-                                           uint32_t max_duration_seconds,
-                                           const V1_4::RttResponder& info);
-
-    std::string ifname_;
-    sp<IWifiIface> bound_iface_;
-    std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
-    std::vector<sp<V1_4::IWifiRttControllerEventCallback>> event_callbacks_;
-    bool is_valid_;
-
-    DISALLOW_COPY_AND_ASSIGN(WifiRttController);
-};
-
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // WIFI_RTT_CONTROLLER_H_
diff --git a/wifi/1.5/default/wifi_sta_iface.cpp b/wifi/1.5/default/wifi_sta_iface.cpp
deleted file mode 100644
index 92c9fe4..0000000
--- a/wifi/1.5/default/wifi_sta_iface.cpp
+++ /dev/null
@@ -1,675 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-
-#include "hidl_return_util.h"
-#include "hidl_struct_util.h"
-#include "wifi_sta_iface.h"
-#include "wifi_status_util.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-using hidl_return_util::validateAndCall;
-
-WifiStaIface::WifiStaIface(
-    const std::string& ifname,
-    const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
-    const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util)
-    : ifname_(ifname),
-      legacy_hal_(legacy_hal),
-      iface_util_(iface_util),
-      is_valid_(true) {
-    // Turn on DFS channel usage for STA iface.
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->setDfsFlag(ifname_, true);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        LOG(ERROR)
-            << "Failed to set DFS flag; DFS channels may be unavailable.";
-    }
-}
-
-void WifiStaIface::invalidate() {
-    legacy_hal_.reset();
-    event_cb_handler_.invalidate();
-    is_valid_ = false;
-}
-
-bool WifiStaIface::isValid() { return is_valid_; }
-
-std::string WifiStaIface::getName() { return ifname_; }
-
-std::set<sp<IWifiStaIfaceEventCallback>> WifiStaIface::getEventCallbacks() {
-    return event_cb_handler_.getCallbacks();
-}
-
-Return<void> WifiStaIface::getName(getName_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::getNameInternal, hidl_status_cb);
-}
-
-Return<void> WifiStaIface::getType(getType_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::getTypeInternal, hidl_status_cb);
-}
-
-Return<void> WifiStaIface::registerEventCallback(
-    const sp<IWifiStaIfaceEventCallback>& callback,
-    registerEventCallback_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::registerEventCallbackInternal,
-                           hidl_status_cb, callback);
-}
-
-Return<void> WifiStaIface::getCapabilities(getCapabilities_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::getCapabilitiesInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiStaIface::getApfPacketFilterCapabilities(
-    getApfPacketFilterCapabilities_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-        &WifiStaIface::getApfPacketFilterCapabilitiesInternal, hidl_status_cb);
-}
-
-Return<void> WifiStaIface::installApfPacketFilter(
-    uint32_t cmd_id, const hidl_vec<uint8_t>& program,
-    installApfPacketFilter_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::installApfPacketFilterInternal,
-                           hidl_status_cb, cmd_id, program);
-}
-
-Return<void> WifiStaIface::readApfPacketFilterData(
-    readApfPacketFilterData_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::readApfPacketFilterDataInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiStaIface::getBackgroundScanCapabilities(
-    getBackgroundScanCapabilities_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::getBackgroundScanCapabilitiesInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiStaIface::getValidFrequenciesForBand(
-    V1_0::WifiBand band, getValidFrequenciesForBand_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::getValidFrequenciesForBandInternal,
-                           hidl_status_cb, band);
-}
-
-Return<void> WifiStaIface::startBackgroundScan(
-    uint32_t cmd_id, const StaBackgroundScanParameters& params,
-    startBackgroundScan_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::startBackgroundScanInternal,
-                           hidl_status_cb, cmd_id, params);
-}
-
-Return<void> WifiStaIface::stopBackgroundScan(
-    uint32_t cmd_id, stopBackgroundScan_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::stopBackgroundScanInternal,
-                           hidl_status_cb, cmd_id);
-}
-
-Return<void> WifiStaIface::enableLinkLayerStatsCollection(
-    bool debug, enableLinkLayerStatsCollection_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-        &WifiStaIface::enableLinkLayerStatsCollectionInternal, hidl_status_cb,
-        debug);
-}
-
-Return<void> WifiStaIface::disableLinkLayerStatsCollection(
-    disableLinkLayerStatsCollection_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-        &WifiStaIface::disableLinkLayerStatsCollectionInternal, hidl_status_cb);
-}
-
-Return<void> WifiStaIface::getLinkLayerStats(
-    getLinkLayerStats_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::getLinkLayerStatsInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiStaIface::getLinkLayerStats_1_3(
-    getLinkLayerStats_1_3_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::getLinkLayerStatsInternal_1_3,
-                           hidl_status_cb);
-}
-
-Return<void> WifiStaIface::getLinkLayerStats_1_5(
-    getLinkLayerStats_1_5_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::getLinkLayerStatsInternal_1_5,
-                           hidl_status_cb);
-}
-
-Return<void> WifiStaIface::startRssiMonitoring(
-    uint32_t cmd_id, int32_t max_rssi, int32_t min_rssi,
-    startRssiMonitoring_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::startRssiMonitoringInternal,
-                           hidl_status_cb, cmd_id, max_rssi, min_rssi);
-}
-
-Return<void> WifiStaIface::stopRssiMonitoring(
-    uint32_t cmd_id, stopRssiMonitoring_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::stopRssiMonitoringInternal,
-                           hidl_status_cb, cmd_id);
-}
-
-Return<void> WifiStaIface::getRoamingCapabilities(
-    getRoamingCapabilities_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::getRoamingCapabilitiesInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiStaIface::configureRoaming(
-    const StaRoamingConfig& config, configureRoaming_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::configureRoamingInternal,
-                           hidl_status_cb, config);
-}
-
-Return<void> WifiStaIface::setRoamingState(StaRoamingState state,
-                                           setRoamingState_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::setRoamingStateInternal,
-                           hidl_status_cb, state);
-}
-
-Return<void> WifiStaIface::enableNdOffload(bool enable,
-                                           enableNdOffload_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::enableNdOffloadInternal,
-                           hidl_status_cb, enable);
-}
-
-Return<void> WifiStaIface::startSendingKeepAlivePackets(
-    uint32_t cmd_id, const hidl_vec<uint8_t>& ip_packet_data,
-    uint16_t ether_type, const hidl_array<uint8_t, 6>& src_address,
-    const hidl_array<uint8_t, 6>& dst_address, uint32_t period_in_ms,
-    startSendingKeepAlivePackets_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::startSendingKeepAlivePacketsInternal,
-                           hidl_status_cb, cmd_id, ip_packet_data, ether_type,
-                           src_address, dst_address, period_in_ms);
-}
-
-Return<void> WifiStaIface::stopSendingKeepAlivePackets(
-    uint32_t cmd_id, stopSendingKeepAlivePackets_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::stopSendingKeepAlivePacketsInternal,
-                           hidl_status_cb, cmd_id);
-}
-
-Return<void> WifiStaIface::setScanningMacOui(
-    const hidl_array<uint8_t, 3>& oui, setScanningMacOui_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::setScanningMacOuiInternal,
-                           hidl_status_cb, oui);
-}
-
-Return<void> WifiStaIface::startDebugPacketFateMonitoring(
-    startDebugPacketFateMonitoring_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-        &WifiStaIface::startDebugPacketFateMonitoringInternal, hidl_status_cb);
-}
-
-Return<void> WifiStaIface::getDebugTxPacketFates(
-    getDebugTxPacketFates_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::getDebugTxPacketFatesInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiStaIface::getDebugRxPacketFates(
-    getDebugRxPacketFates_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::getDebugRxPacketFatesInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiStaIface::setMacAddress(const hidl_array<uint8_t, 6>& mac,
-                                         setMacAddress_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::setMacAddressInternal, hidl_status_cb,
-                           mac);
-}
-
-Return<void> WifiStaIface::getFactoryMacAddress(
-    getFactoryMacAddress_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::getFactoryMacAddressInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiStaIface::setScanMode(bool enable,
-                                       setScanMode_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::setScanModeInternal, hidl_status_cb,
-                           enable);
-}
-
-std::pair<WifiStatus, std::string> WifiStaIface::getNameInternal() {
-    return {createWifiStatus(WifiStatusCode::SUCCESS), ifname_};
-}
-
-std::pair<WifiStatus, IfaceType> WifiStaIface::getTypeInternal() {
-    return {createWifiStatus(WifiStatusCode::SUCCESS), IfaceType::STA};
-}
-
-WifiStatus WifiStaIface::registerEventCallbackInternal(
-    const sp<IWifiStaIfaceEventCallback>& callback) {
-    if (!event_cb_handler_.addCallback(callback)) {
-        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-    }
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-std::pair<WifiStatus, uint32_t> WifiStaIface::getCapabilitiesInternal() {
-    legacy_hal::wifi_error legacy_status;
-    uint64_t legacy_feature_set;
-    std::tie(legacy_status, legacy_feature_set) =
-        legacy_hal_.lock()->getSupportedFeatureSet(ifname_);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        return {createWifiStatusFromLegacyError(legacy_status), 0};
-    }
-    uint32_t legacy_logger_feature_set;
-    std::tie(legacy_status, legacy_logger_feature_set) =
-        legacy_hal_.lock()->getLoggerSupportedFeatureSet(ifname_);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        // some devices don't support querying logger feature set
-        legacy_logger_feature_set = 0;
-    }
-    uint32_t hidl_caps;
-    if (!hidl_struct_util::convertLegacyFeaturesToHidlStaCapabilities(
-            legacy_feature_set, legacy_logger_feature_set, &hidl_caps)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), 0};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
-}
-
-std::pair<WifiStatus, StaApfPacketFilterCapabilities>
-WifiStaIface::getApfPacketFilterCapabilitiesInternal() {
-    legacy_hal::wifi_error legacy_status;
-    legacy_hal::PacketFilterCapabilities legacy_caps;
-    std::tie(legacy_status, legacy_caps) =
-        legacy_hal_.lock()->getPacketFilterCapabilities(ifname_);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        return {createWifiStatusFromLegacyError(legacy_status), {}};
-    }
-    StaApfPacketFilterCapabilities hidl_caps;
-    if (!hidl_struct_util::convertLegacyApfCapabilitiesToHidl(legacy_caps,
-                                                              &hidl_caps)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
-}
-
-WifiStatus WifiStaIface::installApfPacketFilterInternal(
-    uint32_t /* cmd_id */, const std::vector<uint8_t>& program) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->setPacketFilter(ifname_, program);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-std::pair<WifiStatus, std::vector<uint8_t>>
-WifiStaIface::readApfPacketFilterDataInternal() {
-    const std::pair<legacy_hal::wifi_error, std::vector<uint8_t>>
-        legacy_status_and_data =
-            legacy_hal_.lock()->readApfPacketFilterData(ifname_);
-    return {createWifiStatusFromLegacyError(legacy_status_and_data.first),
-            std::move(legacy_status_and_data.second)};
-}
-
-std::pair<WifiStatus, StaBackgroundScanCapabilities>
-WifiStaIface::getBackgroundScanCapabilitiesInternal() {
-    legacy_hal::wifi_error legacy_status;
-    legacy_hal::wifi_gscan_capabilities legacy_caps;
-    std::tie(legacy_status, legacy_caps) =
-        legacy_hal_.lock()->getGscanCapabilities(ifname_);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        return {createWifiStatusFromLegacyError(legacy_status), {}};
-    }
-    StaBackgroundScanCapabilities hidl_caps;
-    if (!hidl_struct_util::convertLegacyGscanCapabilitiesToHidl(legacy_caps,
-                                                                &hidl_caps)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
-}
-
-std::pair<WifiStatus, std::vector<WifiChannelInMhz>>
-WifiStaIface::getValidFrequenciesForBandInternal(V1_0::WifiBand band) {
-    static_assert(sizeof(WifiChannelInMhz) == sizeof(uint32_t),
-                  "Size mismatch");
-    legacy_hal::wifi_error legacy_status;
-    std::vector<uint32_t> valid_frequencies;
-    std::tie(legacy_status, valid_frequencies) =
-        legacy_hal_.lock()->getValidFrequenciesForBand(
-            ifname_, hidl_struct_util::convertHidlWifiBandToLegacy(band));
-    return {createWifiStatusFromLegacyError(legacy_status), valid_frequencies};
-}
-
-WifiStatus WifiStaIface::startBackgroundScanInternal(
-    uint32_t cmd_id, const StaBackgroundScanParameters& params) {
-    legacy_hal::wifi_scan_cmd_params legacy_params;
-    if (!hidl_struct_util::convertHidlGscanParamsToLegacy(params,
-                                                          &legacy_params)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    android::wp<WifiStaIface> weak_ptr_this(this);
-    const auto& on_failure_callback =
-        [weak_ptr_this](legacy_hal::wifi_request_id id) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                if (!callback->onBackgroundScanFailure(id).isOk()) {
-                    LOG(ERROR)
-                        << "Failed to invoke onBackgroundScanFailure callback";
-                }
-            }
-        };
-    const auto& on_results_callback =
-        [weak_ptr_this](
-            legacy_hal::wifi_request_id id,
-            const std::vector<legacy_hal::wifi_cached_scan_results>& results) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            std::vector<StaScanData> hidl_scan_datas;
-            if (!hidl_struct_util::
-                    convertLegacyVectorOfCachedGscanResultsToHidl(
-                        results, &hidl_scan_datas)) {
-                LOG(ERROR) << "Failed to convert scan results to HIDL structs";
-                return;
-            }
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                if (!callback->onBackgroundScanResults(id, hidl_scan_datas)
-                         .isOk()) {
-                    LOG(ERROR)
-                        << "Failed to invoke onBackgroundScanResults callback";
-                }
-            }
-        };
-    const auto& on_full_result_callback = [weak_ptr_this](
-                                              legacy_hal::wifi_request_id id,
-                                              const legacy_hal::
-                                                  wifi_scan_result* result,
-                                              uint32_t buckets_scanned) {
-        const auto shared_ptr_this = weak_ptr_this.promote();
-        if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-            LOG(ERROR) << "Callback invoked on an invalid object";
-            return;
-        }
-        StaScanResult hidl_scan_result;
-        if (!hidl_struct_util::convertLegacyGscanResultToHidl(
-                *result, true, &hidl_scan_result)) {
-            LOG(ERROR) << "Failed to convert full scan results to HIDL structs";
-            return;
-        }
-        for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-            if (!callback
-                     ->onBackgroundFullScanResult(id, buckets_scanned,
-                                                  hidl_scan_result)
-                     .isOk()) {
-                LOG(ERROR)
-                    << "Failed to invoke onBackgroundFullScanResult callback";
-            }
-        }
-    };
-    legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->startGscan(
-        ifname_, cmd_id, legacy_params, on_failure_callback,
-        on_results_callback, on_full_result_callback);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiStaIface::stopBackgroundScanInternal(uint32_t cmd_id) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->stopGscan(ifname_, cmd_id);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiStaIface::enableLinkLayerStatsCollectionInternal(bool debug) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->enableLinkLayerStats(ifname_, debug);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiStaIface::disableLinkLayerStatsCollectionInternal() {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->disableLinkLayerStats(ifname_);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-std::pair<WifiStatus, V1_0::StaLinkLayerStats>
-WifiStaIface::getLinkLayerStatsInternal() {
-    return {createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED), {}};
-}
-
-std::pair<WifiStatus, V1_3::StaLinkLayerStats>
-WifiStaIface::getLinkLayerStatsInternal_1_3() {
-    return {createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED), {}};
-}
-
-std::pair<WifiStatus, V1_5::StaLinkLayerStats>
-WifiStaIface::getLinkLayerStatsInternal_1_5() {
-    legacy_hal::wifi_error legacy_status;
-    legacy_hal::LinkLayerStats legacy_stats;
-    std::tie(legacy_status, legacy_stats) =
-        legacy_hal_.lock()->getLinkLayerStats(ifname_);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        return {createWifiStatusFromLegacyError(legacy_status), {}};
-    }
-    V1_5::StaLinkLayerStats hidl_stats;
-    if (!hidl_struct_util::convertLegacyLinkLayerStatsToHidl(legacy_stats,
-                                                             &hidl_stats)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_stats};
-}
-
-WifiStatus WifiStaIface::startRssiMonitoringInternal(uint32_t cmd_id,
-                                                     int32_t max_rssi,
-                                                     int32_t min_rssi) {
-    android::wp<WifiStaIface> weak_ptr_this(this);
-    const auto& on_threshold_breached_callback =
-        [weak_ptr_this](legacy_hal::wifi_request_id id,
-                        std::array<uint8_t, 6> bssid, int8_t rssi) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                if (!callback->onRssiThresholdBreached(id, bssid, rssi)
-                         .isOk()) {
-                    LOG(ERROR)
-                        << "Failed to invoke onRssiThresholdBreached callback";
-                }
-            }
-        };
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->startRssiMonitoring(ifname_, cmd_id, max_rssi,
-                                                min_rssi,
-                                                on_threshold_breached_callback);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiStaIface::stopRssiMonitoringInternal(uint32_t cmd_id) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->stopRssiMonitoring(ifname_, cmd_id);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-std::pair<WifiStatus, StaRoamingCapabilities>
-WifiStaIface::getRoamingCapabilitiesInternal() {
-    legacy_hal::wifi_error legacy_status;
-    legacy_hal::wifi_roaming_capabilities legacy_caps;
-    std::tie(legacy_status, legacy_caps) =
-        legacy_hal_.lock()->getRoamingCapabilities(ifname_);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        return {createWifiStatusFromLegacyError(legacy_status), {}};
-    }
-    StaRoamingCapabilities hidl_caps;
-    if (!hidl_struct_util::convertLegacyRoamingCapabilitiesToHidl(legacy_caps,
-                                                                  &hidl_caps)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
-}
-
-WifiStatus WifiStaIface::configureRoamingInternal(
-    const StaRoamingConfig& config) {
-    legacy_hal::wifi_roaming_config legacy_config;
-    if (!hidl_struct_util::convertHidlRoamingConfigToLegacy(config,
-                                                            &legacy_config)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->configureRoaming(ifname_, legacy_config);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiStaIface::setRoamingStateInternal(StaRoamingState state) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->enableFirmwareRoaming(
-            ifname_, hidl_struct_util::convertHidlRoamingStateToLegacy(state));
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiStaIface::enableNdOffloadInternal(bool enable) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->configureNdOffload(ifname_, enable);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiStaIface::startSendingKeepAlivePacketsInternal(
-    uint32_t cmd_id, const std::vector<uint8_t>& ip_packet_data,
-    uint16_t ether_type, const std::array<uint8_t, 6>& src_address,
-    const std::array<uint8_t, 6>& dst_address, uint32_t period_in_ms) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->startSendingOffloadedPacket(
-            ifname_, cmd_id, ether_type, ip_packet_data, src_address,
-            dst_address, period_in_ms);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiStaIface::stopSendingKeepAlivePacketsInternal(uint32_t cmd_id) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->stopSendingOffloadedPacket(ifname_, cmd_id);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiStaIface::setScanningMacOuiInternal(
-    const std::array<uint8_t, 3>& /* oui */) {
-    // deprecated.
-    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
-}
-
-WifiStatus WifiStaIface::startDebugPacketFateMonitoringInternal() {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->startPktFateMonitoring(ifname_);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-std::pair<WifiStatus, std::vector<WifiDebugTxPacketFateReport>>
-WifiStaIface::getDebugTxPacketFatesInternal() {
-    legacy_hal::wifi_error legacy_status;
-    std::vector<legacy_hal::wifi_tx_report> legacy_fates;
-    std::tie(legacy_status, legacy_fates) =
-        legacy_hal_.lock()->getTxPktFates(ifname_);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        return {createWifiStatusFromLegacyError(legacy_status), {}};
-    }
-    std::vector<WifiDebugTxPacketFateReport> hidl_fates;
-    if (!hidl_struct_util::convertLegacyVectorOfDebugTxPacketFateToHidl(
-            legacy_fates, &hidl_fates)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_fates};
-}
-
-std::pair<WifiStatus, std::vector<WifiDebugRxPacketFateReport>>
-WifiStaIface::getDebugRxPacketFatesInternal() {
-    legacy_hal::wifi_error legacy_status;
-    std::vector<legacy_hal::wifi_rx_report> legacy_fates;
-    std::tie(legacy_status, legacy_fates) =
-        legacy_hal_.lock()->getRxPktFates(ifname_);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        return {createWifiStatusFromLegacyError(legacy_status), {}};
-    }
-    std::vector<WifiDebugRxPacketFateReport> hidl_fates;
-    if (!hidl_struct_util::convertLegacyVectorOfDebugRxPacketFateToHidl(
-            legacy_fates, &hidl_fates)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_fates};
-}
-
-WifiStatus WifiStaIface::setMacAddressInternal(
-    const std::array<uint8_t, 6>& mac) {
-    bool status = iface_util_.lock()->setMacAddress(ifname_, mac);
-    if (!status) {
-        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-    }
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-std::pair<WifiStatus, std::array<uint8_t, 6>>
-WifiStaIface::getFactoryMacAddressInternal() {
-    std::array<uint8_t, 6> mac =
-        iface_util_.lock()->getFactoryMacAddress(ifname_);
-    if (mac[0] == 0 && mac[1] == 0 && mac[2] == 0 && mac[3] == 0 &&
-        mac[4] == 0 && mac[5] == 0) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), mac};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), mac};
-}
-
-WifiStatus WifiStaIface::setScanModeInternal(bool enable) {
-    // OEM's need to implement this on their devices if needed.
-    LOG(WARNING) << "setScanModeInternal(" << enable << ") not supported";
-    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
-}
-
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.5/default/wifi_sta_iface.h b/wifi/1.5/default/wifi_sta_iface.h
deleted file mode 100644
index f9058b8..0000000
--- a/wifi/1.5/default/wifi_sta_iface.h
+++ /dev/null
@@ -1,187 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef WIFI_STA_IFACE_H_
-#define WIFI_STA_IFACE_H_
-
-#include <android-base/macros.h>
-#include <android/hardware/wifi/1.0/IWifiStaIfaceEventCallback.h>
-#include <android/hardware/wifi/1.5/IWifiStaIface.h>
-
-#include "hidl_callback_util.h"
-#include "wifi_iface_util.h"
-#include "wifi_legacy_hal.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-using namespace android::hardware::wifi::V1_0;
-
-/**
- * HIDL interface object used to control a STA Iface instance.
- */
-class WifiStaIface : public V1_5::IWifiStaIface {
-   public:
-    WifiStaIface(const std::string& ifname,
-                 const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
-                 const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util);
-    // Refer to |WifiChip::invalidate()|.
-    void invalidate();
-    bool isValid();
-    std::set<sp<IWifiStaIfaceEventCallback>> getEventCallbacks();
-    std::string getName();
-
-    // HIDL methods exposed.
-    Return<void> getName(getName_cb hidl_status_cb) override;
-    Return<void> getType(getType_cb hidl_status_cb) override;
-    Return<void> registerEventCallback(
-        const sp<IWifiStaIfaceEventCallback>& callback,
-        registerEventCallback_cb hidl_status_cb) override;
-    Return<void> getCapabilities(getCapabilities_cb hidl_status_cb) override;
-    Return<void> getApfPacketFilterCapabilities(
-        getApfPacketFilterCapabilities_cb hidl_status_cb) override;
-    Return<void> installApfPacketFilter(
-        uint32_t cmd_id, const hidl_vec<uint8_t>& program,
-        installApfPacketFilter_cb hidl_status_cb) override;
-    Return<void> readApfPacketFilterData(
-        readApfPacketFilterData_cb hidl_status_cb) override;
-    Return<void> getBackgroundScanCapabilities(
-        getBackgroundScanCapabilities_cb hidl_status_cb) override;
-    Return<void> getValidFrequenciesForBand(
-        V1_0::WifiBand band,
-        getValidFrequenciesForBand_cb hidl_status_cb) override;
-    Return<void> startBackgroundScan(
-        uint32_t cmd_id, const StaBackgroundScanParameters& params,
-        startBackgroundScan_cb hidl_status_cb) override;
-    Return<void> stopBackgroundScan(
-        uint32_t cmd_id, stopBackgroundScan_cb hidl_status_cb) override;
-    Return<void> enableLinkLayerStatsCollection(
-        bool debug, enableLinkLayerStatsCollection_cb hidl_status_cb) override;
-    Return<void> disableLinkLayerStatsCollection(
-        disableLinkLayerStatsCollection_cb hidl_status_cb) override;
-    Return<void> getLinkLayerStats(
-        getLinkLayerStats_cb hidl_status_cb) override;
-    Return<void> getLinkLayerStats_1_3(
-        getLinkLayerStats_1_3_cb hidl_status_cb) override;
-    Return<void> getLinkLayerStats_1_5(
-        getLinkLayerStats_1_5_cb hidl_status_cb) override;
-    Return<void> startRssiMonitoring(
-        uint32_t cmd_id, int32_t max_rssi, int32_t min_rssi,
-        startRssiMonitoring_cb hidl_status_cb) override;
-    Return<void> stopRssiMonitoring(
-        uint32_t cmd_id, stopRssiMonitoring_cb hidl_status_cb) override;
-    Return<void> getRoamingCapabilities(
-        getRoamingCapabilities_cb hidl_status_cb) override;
-    Return<void> configureRoaming(const StaRoamingConfig& config,
-                                  configureRoaming_cb hidl_status_cb) override;
-    Return<void> setRoamingState(StaRoamingState state,
-                                 setRoamingState_cb hidl_status_cb) override;
-    Return<void> enableNdOffload(bool enable,
-                                 enableNdOffload_cb hidl_status_cb) override;
-    Return<void> startSendingKeepAlivePackets(
-        uint32_t cmd_id, const hidl_vec<uint8_t>& ip_packet_data,
-        uint16_t ether_type, const hidl_array<uint8_t, 6>& src_address,
-        const hidl_array<uint8_t, 6>& dst_address, uint32_t period_in_ms,
-        startSendingKeepAlivePackets_cb hidl_status_cb) override;
-    Return<void> stopSendingKeepAlivePackets(
-        uint32_t cmd_id,
-        stopSendingKeepAlivePackets_cb hidl_status_cb) override;
-    Return<void> setScanningMacOui(
-        const hidl_array<uint8_t, 3>& oui,
-        setScanningMacOui_cb hidl_status_cb) override;
-    Return<void> startDebugPacketFateMonitoring(
-        startDebugPacketFateMonitoring_cb hidl_status_cb) override;
-    Return<void> getDebugTxPacketFates(
-        getDebugTxPacketFates_cb hidl_status_cb) override;
-    Return<void> getDebugRxPacketFates(
-        getDebugRxPacketFates_cb hidl_status_cb) override;
-    Return<void> setMacAddress(const hidl_array<uint8_t, 6>& mac,
-                               setMacAddress_cb hidl_status_cb) override;
-    Return<void> getFactoryMacAddress(
-        getFactoryMacAddress_cb hidl_status_cb) override;
-    Return<void> setScanMode(bool enable,
-                             setScanMode_cb hidl_status_cb) override;
-
-   private:
-    // Corresponding worker functions for the HIDL methods.
-    std::pair<WifiStatus, std::string> getNameInternal();
-    std::pair<WifiStatus, IfaceType> getTypeInternal();
-    WifiStatus registerEventCallbackInternal(
-        const sp<IWifiStaIfaceEventCallback>& callback);
-    std::pair<WifiStatus, uint32_t> getCapabilitiesInternal();
-    std::pair<WifiStatus, StaApfPacketFilterCapabilities>
-    getApfPacketFilterCapabilitiesInternal();
-    WifiStatus installApfPacketFilterInternal(
-        uint32_t cmd_id, const std::vector<uint8_t>& program);
-    std::pair<WifiStatus, std::vector<uint8_t>>
-    readApfPacketFilterDataInternal();
-    std::pair<WifiStatus, StaBackgroundScanCapabilities>
-    getBackgroundScanCapabilitiesInternal();
-    std::pair<WifiStatus, std::vector<WifiChannelInMhz>>
-    getValidFrequenciesForBandInternal(V1_0::WifiBand band);
-    WifiStatus startBackgroundScanInternal(
-        uint32_t cmd_id, const StaBackgroundScanParameters& params);
-    WifiStatus stopBackgroundScanInternal(uint32_t cmd_id);
-    WifiStatus enableLinkLayerStatsCollectionInternal(bool debug);
-    WifiStatus disableLinkLayerStatsCollectionInternal();
-    std::pair<WifiStatus, V1_0::StaLinkLayerStats> getLinkLayerStatsInternal();
-    std::pair<WifiStatus, V1_3::StaLinkLayerStats>
-    getLinkLayerStatsInternal_1_3();
-    std::pair<WifiStatus, V1_5::StaLinkLayerStats>
-    getLinkLayerStatsInternal_1_5();
-    WifiStatus startRssiMonitoringInternal(uint32_t cmd_id, int32_t max_rssi,
-                                           int32_t min_rssi);
-    WifiStatus stopRssiMonitoringInternal(uint32_t cmd_id);
-    std::pair<WifiStatus, StaRoamingCapabilities>
-    getRoamingCapabilitiesInternal();
-    WifiStatus configureRoamingInternal(const StaRoamingConfig& config);
-    WifiStatus setRoamingStateInternal(StaRoamingState state);
-    WifiStatus enableNdOffloadInternal(bool enable);
-    WifiStatus startSendingKeepAlivePacketsInternal(
-        uint32_t cmd_id, const std::vector<uint8_t>& ip_packet_data,
-        uint16_t ether_type, const std::array<uint8_t, 6>& src_address,
-        const std::array<uint8_t, 6>& dst_address, uint32_t period_in_ms);
-    WifiStatus stopSendingKeepAlivePacketsInternal(uint32_t cmd_id);
-    WifiStatus setScanningMacOuiInternal(const std::array<uint8_t, 3>& oui);
-    WifiStatus startDebugPacketFateMonitoringInternal();
-    std::pair<WifiStatus, std::vector<WifiDebugTxPacketFateReport>>
-    getDebugTxPacketFatesInternal();
-    std::pair<WifiStatus, std::vector<WifiDebugRxPacketFateReport>>
-    getDebugRxPacketFatesInternal();
-    WifiStatus setMacAddressInternal(const std::array<uint8_t, 6>& mac);
-    std::pair<WifiStatus, std::array<uint8_t, 6>>
-    getFactoryMacAddressInternal();
-    WifiStatus setScanModeInternal(bool enable);
-
-    std::string ifname_;
-    std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
-    std::weak_ptr<iface_util::WifiIfaceUtil> iface_util_;
-    bool is_valid_;
-    hidl_callback_util::HidlCallbackHandler<IWifiStaIfaceEventCallback>
-        event_cb_handler_;
-
-    DISALLOW_COPY_AND_ASSIGN(WifiStaIface);
-};
-
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // WIFI_STA_IFACE_H_
diff --git a/wifi/1.5/default/wifi_status_util.cpp b/wifi/1.5/default/wifi_status_util.cpp
deleted file mode 100644
index eb8c869..0000000
--- a/wifi/1.5/default/wifi_status_util.cpp
+++ /dev/null
@@ -1,112 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "wifi_status_util.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-
-std::string legacyErrorToString(legacy_hal::wifi_error error) {
-    switch (error) {
-        case legacy_hal::WIFI_SUCCESS:
-            return "SUCCESS";
-        case legacy_hal::WIFI_ERROR_UNINITIALIZED:
-            return "UNINITIALIZED";
-        case legacy_hal::WIFI_ERROR_NOT_AVAILABLE:
-            return "NOT_AVAILABLE";
-        case legacy_hal::WIFI_ERROR_NOT_SUPPORTED:
-            return "NOT_SUPPORTED";
-        case legacy_hal::WIFI_ERROR_INVALID_ARGS:
-            return "INVALID_ARGS";
-        case legacy_hal::WIFI_ERROR_INVALID_REQUEST_ID:
-            return "INVALID_REQUEST_ID";
-        case legacy_hal::WIFI_ERROR_TIMED_OUT:
-            return "TIMED_OUT";
-        case legacy_hal::WIFI_ERROR_TOO_MANY_REQUESTS:
-            return "TOO_MANY_REQUESTS";
-        case legacy_hal::WIFI_ERROR_OUT_OF_MEMORY:
-            return "OUT_OF_MEMORY";
-        case legacy_hal::WIFI_ERROR_BUSY:
-            return "BUSY";
-        case legacy_hal::WIFI_ERROR_UNKNOWN:
-            return "UNKNOWN";
-        default:
-            return "UNKNOWN ERROR";
-    }
-}
-
-WifiStatus createWifiStatus(WifiStatusCode code,
-                            const std::string& description) {
-    return {code, description};
-}
-
-WifiStatus createWifiStatus(WifiStatusCode code) {
-    return createWifiStatus(code, "");
-}
-
-WifiStatus createWifiStatusFromLegacyError(legacy_hal::wifi_error error,
-                                           const std::string& desc) {
-    switch (error) {
-        case legacy_hal::WIFI_ERROR_UNINITIALIZED:
-        case legacy_hal::WIFI_ERROR_NOT_AVAILABLE:
-            return createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE, desc);
-
-        case legacy_hal::WIFI_ERROR_NOT_SUPPORTED:
-            return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED, desc);
-
-        case legacy_hal::WIFI_ERROR_INVALID_ARGS:
-        case legacy_hal::WIFI_ERROR_INVALID_REQUEST_ID:
-            return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS, desc);
-
-        case legacy_hal::WIFI_ERROR_TIMED_OUT:
-            return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN,
-                                    desc + ", timed out");
-
-        case legacy_hal::WIFI_ERROR_TOO_MANY_REQUESTS:
-            return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN,
-                                    desc + ", too many requests");
-
-        case legacy_hal::WIFI_ERROR_OUT_OF_MEMORY:
-            return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN,
-                                    desc + ", out of memory");
-
-        case legacy_hal::WIFI_ERROR_BUSY:
-            return createWifiStatus(WifiStatusCode::ERROR_BUSY);
-
-        case legacy_hal::WIFI_ERROR_NONE:
-            return createWifiStatus(WifiStatusCode::SUCCESS, desc);
-
-        case legacy_hal::WIFI_ERROR_UNKNOWN:
-            return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN, "unknown");
-
-        default:
-            return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN,
-                                    "unknown error");
-    }
-}
-
-WifiStatus createWifiStatusFromLegacyError(legacy_hal::wifi_error error) {
-    return createWifiStatusFromLegacyError(error, "");
-}
-
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.5/default/wifi_status_util.h b/wifi/1.5/default/wifi_status_util.h
deleted file mode 100644
index 68f2168..0000000
--- a/wifi/1.5/default/wifi_status_util.h
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef WIFI_STATUS_UTIL_H_
-#define WIFI_STATUS_UTIL_H_
-
-#include <android/hardware/wifi/1.4/IWifi.h>
-
-#include "wifi_legacy_hal.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_5 {
-namespace implementation {
-using namespace android::hardware::wifi::V1_0;
-
-std::string legacyErrorToString(legacy_hal::wifi_error error);
-WifiStatus createWifiStatus(WifiStatusCode code,
-                            const std::string& description);
-WifiStatus createWifiStatus(WifiStatusCode code);
-WifiStatus createWifiStatusFromLegacyError(legacy_hal::wifi_error error,
-                                           const std::string& description);
-WifiStatus createWifiStatusFromLegacyError(legacy_hal::wifi_error error);
-
-}  // namespace implementation
-}  // namespace V1_5
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // WIFI_STATUS_UTIL_H_
diff --git a/wifi/1.6/Android.bp b/wifi/1.6/Android.bp
new file mode 100644
index 0000000..d293c73
--- /dev/null
+++ b/wifi/1.6/Android.bp
@@ -0,0 +1,32 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "hardware_interfaces_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["hardware_interfaces_license"],
+}
+
+hidl_interface {
+    name: "android.hardware.wifi@1.6",
+    root: "android.hardware",
+    srcs: [
+        "IWifi.hal",
+    ],
+    interfaces: [
+        "android.hardware.wifi@1.0",
+        "android.hardware.wifi@1.1",
+        "android.hardware.wifi@1.2",
+        "android.hardware.wifi@1.3",
+        "android.hardware.wifi@1.4",
+        "android.hardware.wifi@1.5",
+        "android.hidl.base@1.0",
+    ],
+    gen_java: true,
+    apex_available: [
+        "//apex_available:platform",
+        "com.android.wifi",
+    ],
+}
diff --git a/wifi/1.6/IWifi.hal b/wifi/1.6/IWifi.hal
new file mode 100644
index 0000000..0123e6c
--- /dev/null
+++ b/wifi/1.6/IWifi.hal
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi@1.6;
+
+import @1.5::IWifi;
+
+/**
+ * This is the root of the HAL module and is the interface returned when
+ * loading an implementation of the Wi-Fi HAL. There must be at most one
+ * module loaded in the system.
+ * IWifi.getChip() must return @1.5::IWifiChip
+ */
+interface IWifi extends @1.5::IWifi {};
diff --git a/wifi/1.6/default/Android.bp b/wifi/1.6/default/Android.bp
new file mode 100644
index 0000000..d48d183
--- /dev/null
+++ b/wifi/1.6/default/Android.bp
@@ -0,0 +1,107 @@
+// Copyright (C) 2021 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package {
+    default_applicable_licenses: ["hardware_interfaces_license"],
+}
+
+filegroup {
+    name: "android.hardware.wifi@1.0-service_srcs",
+    srcs: ["service.cpp"],
+}
+
+cc_defaults {
+    name: "android.hardware.wifi@1.0-service_default",
+    srcs: [":android.hardware.wifi@1.0-service_srcs"],
+    relative_install_path: "hw",
+    soc_specific: true,
+    shared_libs: [
+        "android.hardware.wifi@1.0",
+        "android.hardware.wifi@1.1",
+        "android.hardware.wifi@1.2",
+        "android.hardware.wifi@1.3",
+        "android.hardware.wifi@1.4",
+        "android.hardware.wifi@1.5",
+        "android.hardware.wifi@1.6",
+        "libbase",
+        "libcutils",
+        "libhidlbase",
+        "liblog",
+        "libnl",
+        "libutils",
+        "libwifi-system-iface",
+        "libxml2",
+    ],
+    cppflags: [
+        "-Wall",
+        "-Werror",
+        "-Wextra",
+    ],
+}
+
+filegroup {
+    name: "android.hardware.wifi@1.0-service-lib_srcs",
+    srcs: [
+        "hidl_struct_util.cpp",
+        "hidl_sync_util.cpp",
+        "ringbuffer.cpp",
+        "wifi.cpp",
+        "wifi_ap_iface.cpp",
+        "wifi_chip.cpp",
+        "wifi_feature_flags.cpp",
+        "wifi_iface_util.cpp",
+        "wifi_legacy_hal.cpp",
+        "wifi_legacy_hal_factory.cpp",
+        "wifi_legacy_hal_stubs.cpp",
+        "wifi_mode_controller.cpp",
+        "wifi_nan_iface.cpp",
+        "wifi_p2p_iface.cpp",
+        "wifi_rtt_controller.cpp",
+        "wifi_sta_iface.cpp",
+        "wifi_status_util.cpp",
+    ],
+}
+
+cc_defaults {
+    name: "android.hardware.wifi@1.0-service-lib_defaults",
+    srcs: [":android.hardware.wifi@1.0-service-lib_srcs"],
+    relative_install_path: "hw",
+    soc_specific: true,
+    shared_libs: [
+        "android.hardware.wifi@1.0",
+        "android.hardware.wifi@1.1",
+        "android.hardware.wifi@1.2",
+        "android.hardware.wifi@1.3",
+        "android.hardware.wifi@1.4",
+        "android.hardware.wifi@1.5",
+        "android.hardware.wifi@1.6",
+        "libbase",
+        "libcutils",
+        "libhidlbase",
+        "liblog",
+        "libnl",
+        "libutils",
+        "libwifi-system-iface",
+        "libxml2",
+    ],
+    // Generated by building android.hardware.wifi@1.0-service-lib and printing LOCAL_CPPFLAGS.
+    cppflags: [
+        "-Wall",
+        "-Werror",
+        "-Wextra",
+        "-DWIFI_HIDL_FEATURE_DUAL_INTERFACE",
+    ],
+    export_include_dirs: ["."],
+    include_dirs: ["external/libxml2/include"],
+}
diff --git a/wifi/1.6/default/Android.mk b/wifi/1.6/default/Android.mk
new file mode 100644
index 0000000..ca1c022
--- /dev/null
+++ b/wifi/1.6/default/Android.mk
@@ -0,0 +1,202 @@
+# Copyright (C) 2016 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+LOCAL_PATH := $(call my-dir)
+
+###
+### android.hardware.wifi static library
+###
+include $(CLEAR_VARS)
+LOCAL_MODULE := android.hardware.wifi@1.0-service-lib
+LOCAL_LICENSE_KINDS := SPDX-license-identifier-Apache-2.0
+LOCAL_LICENSE_CONDITIONS := notice
+LOCAL_NOTICE_FILE := $(LOCAL_PATH)/../../../NOTICE
+LOCAL_MODULE_RELATIVE_PATH := hw
+LOCAL_PROPRIETARY_MODULE := true
+LOCAL_CPPFLAGS := -Wall -Werror -Wextra
+ifdef WIFI_HAL_INTERFACE_COMBINATIONS
+LOCAL_CPPFLAGS += -DWIFI_HAL_INTERFACE_COMBINATIONS="$(WIFI_HAL_INTERFACE_COMBINATIONS)"
+endif
+ifdef WIFI_HIDL_FEATURE_AWARE
+LOCAL_CPPFLAGS += -DWIFI_HIDL_FEATURE_AWARE
+endif
+ifdef WIFI_HIDL_FEATURE_DUAL_INTERFACE
+LOCAL_CPPFLAGS += -DWIFI_HIDL_FEATURE_DUAL_INTERFACE
+endif
+ifdef WIFI_HIDL_FEATURE_DISABLE_AP
+LOCAL_CPPFLAGS += -DWIFI_HIDL_FEATURE_DISABLE_AP
+endif
+ifdef WIFI_HIDL_FEATURE_DISABLE_AP_MAC_RANDOMIZATION
+LOCAL_CPPFLAGS += -DWIFI_HIDL_FEATURE_DISABLE_AP_MAC_RANDOMIZATION
+endif
+ifdef WIFI_AVOID_IFACE_RESET_MAC_CHANGE
+LOCAL_CPPFLAGS += -DWIFI_AVOID_IFACE_RESET_MAC_CHANGE
+endif
+# Allow implicit fallthroughs in wifi_legacy_hal.cpp until they are fixed.
+LOCAL_CFLAGS += -Wno-error=implicit-fallthrough
+LOCAL_SRC_FILES := \
+    hidl_struct_util.cpp \
+    hidl_sync_util.cpp \
+    ringbuffer.cpp \
+    wifi.cpp \
+    wifi_ap_iface.cpp \
+    wifi_chip.cpp \
+    wifi_feature_flags.cpp \
+    wifi_iface_util.cpp \
+    wifi_legacy_hal.cpp \
+    wifi_legacy_hal_factory.cpp \
+    wifi_legacy_hal_stubs.cpp \
+    wifi_mode_controller.cpp \
+    wifi_nan_iface.cpp \
+    wifi_p2p_iface.cpp \
+    wifi_rtt_controller.cpp \
+    wifi_sta_iface.cpp \
+    wifi_status_util.cpp
+LOCAL_SHARED_LIBRARIES := \
+    libbase \
+    libcutils \
+    libhidlbase \
+    liblog \
+    libnl \
+    libutils \
+    libwifi-hal \
+    libwifi-system-iface \
+    libxml2 \
+    android.hardware.wifi@1.0 \
+    android.hardware.wifi@1.1 \
+    android.hardware.wifi@1.2 \
+    android.hardware.wifi@1.3 \
+    android.hardware.wifi@1.4 \
+    android.hardware.wifi@1.5 \
+    android.hardware.wifi@1.6
+LOCAL_C_INCLUDES += $(TOP)/external/libxml2/include
+LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)
+include $(BUILD_STATIC_LIBRARY)
+
+###
+### android.hardware.wifi daemon
+###
+include $(CLEAR_VARS)
+LOCAL_MODULE := android.hardware.wifi@1.0-service
+LOCAL_LICENSE_KINDS := SPDX-license-identifier-Apache-2.0
+LOCAL_LICENSE_CONDITIONS := notice
+LOCAL_NOTICE_FILE := $(LOCAL_PATH)/../../../NOTICE
+LOCAL_VINTF_FRAGMENTS := android.hardware.wifi@1.0-service.xml
+LOCAL_MODULE_RELATIVE_PATH := hw
+LOCAL_PROPRIETARY_MODULE := true
+LOCAL_CPPFLAGS := -Wall -Werror -Wextra
+LOCAL_SRC_FILES := \
+    service.cpp
+LOCAL_SHARED_LIBRARIES := \
+    libbase \
+    libcutils \
+    libhidlbase \
+    liblog \
+    libnl \
+    libutils \
+    libwifi-hal \
+    libwifi-system-iface \
+    libxml2 \
+    android.hardware.wifi@1.0 \
+    android.hardware.wifi@1.1 \
+    android.hardware.wifi@1.2 \
+    android.hardware.wifi@1.3 \
+    android.hardware.wifi@1.4 \
+    android.hardware.wifi@1.5 \
+    android.hardware.wifi@1.6
+LOCAL_STATIC_LIBRARIES := \
+    android.hardware.wifi@1.0-service-lib
+LOCAL_INIT_RC := android.hardware.wifi@1.0-service.rc
+include $(BUILD_EXECUTABLE)
+
+###
+### android.hardware.wifi daemon
+###
+include $(CLEAR_VARS)
+LOCAL_MODULE := android.hardware.wifi@1.0-service-lazy
+LOCAL_LICENSE_KINDS := SPDX-license-identifier-Apache-2.0
+LOCAL_LICENSE_CONDITIONS := notice
+LOCAL_NOTICE_FILE := $(LOCAL_PATH)/../../../NOTICE
+LOCAL_VINTF_FRAGMENTS := android.hardware.wifi@1.0-service.xml
+LOCAL_OVERRIDES_MODULES := android.hardware.wifi@1.0-service
+LOCAL_CFLAGS := -DLAZY_SERVICE
+LOCAL_MODULE_RELATIVE_PATH := hw
+LOCAL_PROPRIETARY_MODULE := true
+LOCAL_CPPFLAGS := -Wall -Werror -Wextra
+LOCAL_SRC_FILES := \
+    service.cpp
+LOCAL_SHARED_LIBRARIES := \
+    libbase \
+    libcutils \
+    libhidlbase \
+    liblog \
+    libnl \
+    libutils \
+    libwifi-hal \
+    libwifi-system-iface \
+    libxml2 \
+    android.hardware.wifi@1.0 \
+    android.hardware.wifi@1.1 \
+    android.hardware.wifi@1.2 \
+    android.hardware.wifi@1.3 \
+    android.hardware.wifi@1.4 \
+    android.hardware.wifi@1.5 \
+    android.hardware.wifi@1.6
+LOCAL_STATIC_LIBRARIES := \
+    android.hardware.wifi@1.0-service-lib
+LOCAL_INIT_RC := android.hardware.wifi@1.0-service-lazy.rc
+include $(BUILD_EXECUTABLE)
+
+###
+### android.hardware.wifi unit tests.
+###
+include $(CLEAR_VARS)
+LOCAL_MODULE := android.hardware.wifi@1.0-service-tests
+LOCAL_LICENSE_KINDS := SPDX-license-identifier-Apache-2.0
+LOCAL_LICENSE_CONDITIONS := notice
+LOCAL_NOTICE_FILE := $(LOCAL_PATH)/../../../NOTICE
+LOCAL_PROPRIETARY_MODULE := true
+LOCAL_CPPFLAGS := -Wall -Werror -Wextra
+LOCAL_SRC_FILES := \
+    tests/hidl_struct_util_unit_tests.cpp \
+    tests/main.cpp \
+    tests/mock_interface_tool.cpp \
+    tests/mock_wifi_feature_flags.cpp \
+    tests/mock_wifi_iface_util.cpp \
+    tests/mock_wifi_legacy_hal.cpp \
+    tests/mock_wifi_mode_controller.cpp \
+    tests/ringbuffer_unit_tests.cpp \
+    tests/wifi_nan_iface_unit_tests.cpp \
+    tests/wifi_chip_unit_tests.cpp \
+    tests/wifi_iface_util_unit_tests.cpp
+LOCAL_STATIC_LIBRARIES := \
+    libgmock \
+    libgtest \
+    android.hardware.wifi@1.0 \
+    android.hardware.wifi@1.1 \
+    android.hardware.wifi@1.2 \
+    android.hardware.wifi@1.3 \
+    android.hardware.wifi@1.4 \
+    android.hardware.wifi@1.5 \
+    android.hardware.wifi@1.6 \
+    android.hardware.wifi@1.0-service-lib
+LOCAL_SHARED_LIBRARIES := \
+    libbase \
+    libcutils \
+    libhidlbase \
+    liblog \
+    libnl \
+    libutils \
+    libwifi-hal \
+    libwifi-system-iface
+include $(BUILD_NATIVE_TEST)
diff --git a/wifi/1.5/default/OWNERS b/wifi/1.6/default/OWNERS
similarity index 100%
rename from wifi/1.5/default/OWNERS
rename to wifi/1.6/default/OWNERS
diff --git a/wifi/1.5/default/THREADING.README b/wifi/1.6/default/THREADING.README
similarity index 100%
rename from wifi/1.5/default/THREADING.README
rename to wifi/1.6/default/THREADING.README
diff --git a/wifi/1.6/default/android.hardware.wifi@1.0-service-lazy.rc b/wifi/1.6/default/android.hardware.wifi@1.0-service-lazy.rc
new file mode 100644
index 0000000..ee8c818
--- /dev/null
+++ b/wifi/1.6/default/android.hardware.wifi@1.0-service-lazy.rc
@@ -0,0 +1,14 @@
+service vendor.wifi_hal_legacy /vendor/bin/hw/android.hardware.wifi@1.0-service-lazy
+    interface android.hardware.wifi@1.0::IWifi default
+    interface android.hardware.wifi@1.1::IWifi default
+    interface android.hardware.wifi@1.2::IWifi default
+    interface android.hardware.wifi@1.3::IWifi default
+    interface android.hardware.wifi@1.4::IWifi default
+    interface android.hardware.wifi@1.5::IWifi default
+    interface android.hardware.wifi@1.6::IWifi default
+    oneshot
+    disabled
+    class hal
+    capabilities NET_ADMIN NET_RAW SYS_MODULE
+    user wifi
+    group wifi gps
diff --git a/wifi/1.6/default/android.hardware.wifi@1.0-service.rc b/wifi/1.6/default/android.hardware.wifi@1.0-service.rc
new file mode 100644
index 0000000..18f40d0
--- /dev/null
+++ b/wifi/1.6/default/android.hardware.wifi@1.0-service.rc
@@ -0,0 +1,12 @@
+service vendor.wifi_hal_legacy /vendor/bin/hw/android.hardware.wifi@1.0-service
+    interface android.hardware.wifi@1.0::IWifi default
+    interface android.hardware.wifi@1.1::IWifi default
+    interface android.hardware.wifi@1.2::IWifi default
+    interface android.hardware.wifi@1.3::IWifi default
+    interface android.hardware.wifi@1.4::IWifi default
+    interface android.hardware.wifi@1.5::IWifi default
+    interface android.hardware.wifi@1.6::IWifi default
+    class hal
+    capabilities NET_ADMIN NET_RAW SYS_MODULE
+    user wifi
+    group wifi gps
diff --git a/wifi/1.6/default/android.hardware.wifi@1.0-service.xml b/wifi/1.6/default/android.hardware.wifi@1.0-service.xml
new file mode 100644
index 0000000..771fbaa
--- /dev/null
+++ b/wifi/1.6/default/android.hardware.wifi@1.0-service.xml
@@ -0,0 +1,11 @@
+<manifest version="1.0" type="device">
+    <hal format="hidl">
+        <name>android.hardware.wifi</name>
+        <transport>hwbinder</transport>
+        <version>1.6</version>
+        <interface>
+            <name>IWifi</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+</manifest>
diff --git a/wifi/1.6/default/hidl_callback_util.h b/wifi/1.6/default/hidl_callback_util.h
new file mode 100644
index 0000000..3ac54c1
--- /dev/null
+++ b/wifi/1.6/default/hidl_callback_util.h
@@ -0,0 +1,119 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef HIDL_CALLBACK_UTIL_H_
+#define HIDL_CALLBACK_UTIL_H_
+
+#include <set>
+
+#include <hidl/HidlSupport.h>
+
+namespace {
+// Type of callback invoked by the death handler.
+using on_death_cb_function = std::function<void(uint64_t)>;
+
+// Private class used to keep track of death of individual
+// callbacks stored in HidlCallbackHandler.
+template <typename CallbackType>
+class HidlDeathHandler : public android::hardware::hidl_death_recipient {
+  public:
+    HidlDeathHandler(const on_death_cb_function& user_cb_function)
+        : cb_function_(user_cb_function) {}
+    ~HidlDeathHandler() = default;
+
+    // Death notification for callbacks.
+    void serviceDied(uint64_t cookie,
+                     const android::wp<android::hidl::base::V1_0::IBase>& /* who */) override {
+        cb_function_(cookie);
+    }
+
+  private:
+    on_death_cb_function cb_function_;
+
+    DISALLOW_COPY_AND_ASSIGN(HidlDeathHandler);
+};
+}  // namespace
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+namespace hidl_callback_util {
+template <typename CallbackType>
+// Provides a class to manage callbacks for the various HIDL interfaces and
+// handle the death of the process hosting each callback.
+class HidlCallbackHandler {
+  public:
+    HidlCallbackHandler()
+        : death_handler_(new HidlDeathHandler<CallbackType>(
+                  std::bind(&HidlCallbackHandler::onObjectDeath, this, std::placeholders::_1))) {}
+    ~HidlCallbackHandler() = default;
+
+    bool addCallback(const sp<CallbackType>& cb) {
+        // TODO(b/33818800): Can't compare proxies yet. So, use the cookie
+        // (callback proxy's raw pointer) to track the death of individual
+        // clients.
+        uint64_t cookie = reinterpret_cast<uint64_t>(cb.get());
+        if (cb_set_.find(cb) != cb_set_.end()) {
+            LOG(WARNING) << "Duplicate death notification registration";
+            return true;
+        }
+        if (!cb->linkToDeath(death_handler_, cookie)) {
+            LOG(ERROR) << "Failed to register death notification";
+            return false;
+        }
+        cb_set_.insert(cb);
+        return true;
+    }
+
+    const std::set<android::sp<CallbackType>>& getCallbacks() { return cb_set_; }
+
+    // Death notification for callbacks.
+    void onObjectDeath(uint64_t cookie) {
+        CallbackType* cb = reinterpret_cast<CallbackType*>(cookie);
+        const auto& iter = cb_set_.find(cb);
+        if (iter == cb_set_.end()) {
+            LOG(ERROR) << "Unknown callback death notification received";
+            return;
+        }
+        cb_set_.erase(iter);
+        LOG(DEBUG) << "Dead callback removed from list";
+    }
+
+    void invalidate() {
+        for (const sp<CallbackType>& cb : cb_set_) {
+            if (!cb->unlinkToDeath(death_handler_)) {
+                LOG(ERROR) << "Failed to deregister death notification";
+            }
+        }
+        cb_set_.clear();
+    }
+
+  private:
+    std::set<sp<CallbackType>> cb_set_;
+    sp<HidlDeathHandler<CallbackType>> death_handler_;
+
+    DISALLOW_COPY_AND_ASSIGN(HidlCallbackHandler);
+};
+
+}  // namespace hidl_callback_util
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+#endif  // HIDL_CALLBACK_UTIL_H_
diff --git a/wifi/1.6/default/hidl_return_util.h b/wifi/1.6/default/hidl_return_util.h
new file mode 100644
index 0000000..a0efac2
--- /dev/null
+++ b/wifi/1.6/default/hidl_return_util.h
@@ -0,0 +1,118 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef HIDL_RETURN_UTIL_H_
+#define HIDL_RETURN_UTIL_H_
+
+#include "hidl_sync_util.h"
+#include "wifi_status_util.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+namespace hidl_return_util {
+using namespace android::hardware::wifi::V1_0;
+
+/**
+ * These utility functions are used to invoke a method on the provided
+ * HIDL interface object.
+ * These functions checks if the provided HIDL interface object is valid.
+ * a) if valid, Invokes the corresponding internal implementation function of
+ * the HIDL method. It then invokes the HIDL continuation callback with
+ * the status and any returned values.
+ * b) if invalid, invokes the HIDL continuation callback with the
+ * provided error status and default values.
+ */
+// Use for HIDL methods which return only an instance of WifiStatus.
+template <typename ObjT, typename WorkFuncT, typename... Args>
+Return<void> validateAndCall(ObjT* obj, WifiStatusCode status_code_if_invalid, WorkFuncT&& work,
+                             const std::function<void(const WifiStatus&)>& hidl_cb,
+                             Args&&... args) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (obj->isValid()) {
+        hidl_cb((obj->*work)(std::forward<Args>(args)...));
+    } else {
+        hidl_cb(createWifiStatus(status_code_if_invalid));
+    }
+    return Void();
+}
+
+// Use for HIDL methods which return only an instance of WifiStatus.
+// This version passes the global lock acquired to the body of the method.
+// Note: Only used by IWifi::stop() currently.
+template <typename ObjT, typename WorkFuncT, typename... Args>
+Return<void> validateAndCallWithLock(ObjT* obj, WifiStatusCode status_code_if_invalid,
+                                     WorkFuncT&& work,
+                                     const std::function<void(const WifiStatus&)>& hidl_cb,
+                                     Args&&... args) {
+    auto lock = hidl_sync_util::acquireGlobalLock();
+    if (obj->isValid()) {
+        hidl_cb((obj->*work)(&lock, std::forward<Args>(args)...));
+    } else {
+        hidl_cb(createWifiStatus(status_code_if_invalid));
+    }
+    return Void();
+}
+
+// Use for HIDL methods which return instance of WifiStatus and a single return
+// value.
+template <typename ObjT, typename WorkFuncT, typename ReturnT, typename... Args>
+Return<void> validateAndCall(ObjT* obj, WifiStatusCode status_code_if_invalid, WorkFuncT&& work,
+                             const std::function<void(const WifiStatus&, ReturnT)>& hidl_cb,
+                             Args&&... args) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (obj->isValid()) {
+        const auto& ret_pair = (obj->*work)(std::forward<Args>(args)...);
+        const WifiStatus& status = std::get<0>(ret_pair);
+        const auto& ret_value = std::get<1>(ret_pair);
+        hidl_cb(status, ret_value);
+    } else {
+        hidl_cb(createWifiStatus(status_code_if_invalid),
+                typename std::remove_reference<ReturnT>::type());
+    }
+    return Void();
+}
+
+// Use for HIDL methods which return instance of WifiStatus and 2 return
+// values.
+template <typename ObjT, typename WorkFuncT, typename ReturnT1, typename ReturnT2, typename... Args>
+Return<void> validateAndCall(
+        ObjT* obj, WifiStatusCode status_code_if_invalid, WorkFuncT&& work,
+        const std::function<void(const WifiStatus&, ReturnT1, ReturnT2)>& hidl_cb, Args&&... args) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (obj->isValid()) {
+        const auto& ret_tuple = (obj->*work)(std::forward<Args>(args)...);
+        const WifiStatus& status = std::get<0>(ret_tuple);
+        const auto& ret_value1 = std::get<1>(ret_tuple);
+        const auto& ret_value2 = std::get<2>(ret_tuple);
+        hidl_cb(status, ret_value1, ret_value2);
+    } else {
+        hidl_cb(createWifiStatus(status_code_if_invalid),
+                typename std::remove_reference<ReturnT1>::type(),
+                typename std::remove_reference<ReturnT2>::type());
+    }
+    return Void();
+}
+
+}  // namespace hidl_return_util
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+#endif  // HIDL_RETURN_UTIL_H_
diff --git a/wifi/1.6/default/hidl_struct_util.cpp b/wifi/1.6/default/hidl_struct_util.cpp
new file mode 100644
index 0000000..3489c9e
--- /dev/null
+++ b/wifi/1.6/default/hidl_struct_util.cpp
@@ -0,0 +1,2748 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <utils/SystemClock.h>
+
+#include "hidl_struct_util.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+namespace hidl_struct_util {
+
+using V1_5::NanConfigRequestSupplemental;
+
+WifiChannelWidthInMhz convertLegacyWifiChannelWidthToHidl(legacy_hal::wifi_channel_width type);
+
+hidl_string safeConvertChar(const char* str, size_t max_len) {
+    const char* c = str;
+    size_t size = 0;
+    while (*c && (unsigned char)*c < 128 && size < max_len) {
+        ++size;
+        ++c;
+    }
+    return hidl_string(str, size);
+}
+
+IWifiChip::ChipCapabilityMask convertLegacyLoggerFeatureToHidlChipCapability(uint32_t feature) {
+    using HidlChipCaps = IWifiChip::ChipCapabilityMask;
+    switch (feature) {
+        case legacy_hal::WIFI_LOGGER_MEMORY_DUMP_SUPPORTED:
+            return HidlChipCaps::DEBUG_MEMORY_FIRMWARE_DUMP;
+        case legacy_hal::WIFI_LOGGER_DRIVER_DUMP_SUPPORTED:
+            return HidlChipCaps::DEBUG_MEMORY_DRIVER_DUMP;
+        case legacy_hal::WIFI_LOGGER_CONNECT_EVENT_SUPPORTED:
+            return HidlChipCaps::DEBUG_RING_BUFFER_CONNECT_EVENT;
+        case legacy_hal::WIFI_LOGGER_POWER_EVENT_SUPPORTED:
+            return HidlChipCaps::DEBUG_RING_BUFFER_POWER_EVENT;
+        case legacy_hal::WIFI_LOGGER_WAKE_LOCK_SUPPORTED:
+            return HidlChipCaps::DEBUG_RING_BUFFER_WAKELOCK_EVENT;
+    };
+    CHECK(false) << "Unknown legacy feature: " << feature;
+    return {};
+}
+
+IWifiStaIface::StaIfaceCapabilityMask convertLegacyLoggerFeatureToHidlStaIfaceCapability(
+        uint32_t feature) {
+    using HidlStaIfaceCaps = IWifiStaIface::StaIfaceCapabilityMask;
+    switch (feature) {
+        case legacy_hal::WIFI_LOGGER_PACKET_FATE_SUPPORTED:
+            return HidlStaIfaceCaps::DEBUG_PACKET_FATE;
+    };
+    CHECK(false) << "Unknown legacy feature: " << feature;
+    return {};
+}
+
+V1_5::IWifiChip::ChipCapabilityMask convertLegacyFeatureToHidlChipCapability(uint64_t feature) {
+    using HidlChipCaps = V1_5::IWifiChip::ChipCapabilityMask;
+    switch (feature) {
+        case WIFI_FEATURE_SET_TX_POWER_LIMIT:
+            return HidlChipCaps::SET_TX_POWER_LIMIT;
+        case WIFI_FEATURE_USE_BODY_HEAD_SAR:
+            return HidlChipCaps::USE_BODY_HEAD_SAR;
+        case WIFI_FEATURE_D2D_RTT:
+            return HidlChipCaps::D2D_RTT;
+        case WIFI_FEATURE_D2AP_RTT:
+            return HidlChipCaps::D2AP_RTT;
+        case WIFI_FEATURE_INFRA_60G:
+            return HidlChipCaps::WIGIG;
+        case WIFI_FEATURE_SET_LATENCY_MODE:
+            return HidlChipCaps::SET_LATENCY_MODE;
+        case WIFI_FEATURE_P2P_RAND_MAC:
+            return HidlChipCaps::P2P_RAND_MAC;
+    };
+    CHECK(false) << "Unknown legacy feature: " << feature;
+    return {};
+}
+
+IWifiStaIface::StaIfaceCapabilityMask convertLegacyFeatureToHidlStaIfaceCapability(
+        uint64_t feature) {
+    using HidlStaIfaceCaps = IWifiStaIface::StaIfaceCapabilityMask;
+    switch (feature) {
+        case WIFI_FEATURE_GSCAN:
+            return HidlStaIfaceCaps::BACKGROUND_SCAN;
+        case WIFI_FEATURE_LINK_LAYER_STATS:
+            return HidlStaIfaceCaps::LINK_LAYER_STATS;
+        case WIFI_FEATURE_RSSI_MONITOR:
+            return HidlStaIfaceCaps::RSSI_MONITOR;
+        case WIFI_FEATURE_CONTROL_ROAMING:
+            return HidlStaIfaceCaps::CONTROL_ROAMING;
+        case WIFI_FEATURE_IE_WHITELIST:
+            return HidlStaIfaceCaps::PROBE_IE_WHITELIST;
+        case WIFI_FEATURE_SCAN_RAND:
+            return HidlStaIfaceCaps::SCAN_RAND;
+        case WIFI_FEATURE_INFRA_5G:
+            return HidlStaIfaceCaps::STA_5G;
+        case WIFI_FEATURE_HOTSPOT:
+            return HidlStaIfaceCaps::HOTSPOT;
+        case WIFI_FEATURE_PNO:
+            return HidlStaIfaceCaps::PNO;
+        case WIFI_FEATURE_TDLS:
+            return HidlStaIfaceCaps::TDLS;
+        case WIFI_FEATURE_TDLS_OFFCHANNEL:
+            return HidlStaIfaceCaps::TDLS_OFFCHANNEL;
+        case WIFI_FEATURE_CONFIG_NDO:
+            return HidlStaIfaceCaps::ND_OFFLOAD;
+        case WIFI_FEATURE_MKEEP_ALIVE:
+            return HidlStaIfaceCaps::KEEP_ALIVE;
+    };
+    CHECK(false) << "Unknown legacy feature: " << feature;
+    return {};
+}
+
+bool convertLegacyFeaturesToHidlChipCapabilities(uint64_t legacy_feature_set,
+                                                 uint32_t legacy_logger_feature_set,
+                                                 uint32_t* hidl_caps) {
+    if (!hidl_caps) {
+        return false;
+    }
+    *hidl_caps = {};
+    using HidlChipCaps = IWifiChip::ChipCapabilityMask;
+    for (const auto feature : {legacy_hal::WIFI_LOGGER_MEMORY_DUMP_SUPPORTED,
+                               legacy_hal::WIFI_LOGGER_DRIVER_DUMP_SUPPORTED,
+                               legacy_hal::WIFI_LOGGER_CONNECT_EVENT_SUPPORTED,
+                               legacy_hal::WIFI_LOGGER_POWER_EVENT_SUPPORTED,
+                               legacy_hal::WIFI_LOGGER_WAKE_LOCK_SUPPORTED}) {
+        if (feature & legacy_logger_feature_set) {
+            *hidl_caps |= convertLegacyLoggerFeatureToHidlChipCapability(feature);
+        }
+    }
+    std::vector<uint64_t> features = {WIFI_FEATURE_SET_TX_POWER_LIMIT,
+                                      WIFI_FEATURE_USE_BODY_HEAD_SAR,
+                                      WIFI_FEATURE_D2D_RTT,
+                                      WIFI_FEATURE_D2AP_RTT,
+                                      WIFI_FEATURE_INFRA_60G,
+                                      WIFI_FEATURE_SET_LATENCY_MODE,
+                                      WIFI_FEATURE_P2P_RAND_MAC};
+    for (const auto feature : features) {
+        if (feature & legacy_feature_set) {
+            *hidl_caps |= convertLegacyFeatureToHidlChipCapability(feature);
+        }
+    }
+
+    // There are no flags for these 3 in the legacy feature set. Adding them to
+    // the set because all the current devices support it.
+    *hidl_caps |= HidlChipCaps::DEBUG_RING_BUFFER_VENDOR_DATA;
+    *hidl_caps |= HidlChipCaps::DEBUG_HOST_WAKE_REASON_STATS;
+    *hidl_caps |= HidlChipCaps::DEBUG_ERROR_ALERTS;
+    return true;
+}
+
+WifiDebugRingBufferFlags convertLegacyDebugRingBufferFlagsToHidl(uint32_t flag) {
+    switch (flag) {
+        case WIFI_RING_BUFFER_FLAG_HAS_BINARY_ENTRIES:
+            return WifiDebugRingBufferFlags::HAS_BINARY_ENTRIES;
+        case WIFI_RING_BUFFER_FLAG_HAS_ASCII_ENTRIES:
+            return WifiDebugRingBufferFlags::HAS_ASCII_ENTRIES;
+    };
+    CHECK(false) << "Unknown legacy flag: " << flag;
+    return {};
+}
+
+bool convertLegacyDebugRingBufferStatusToHidl(
+        const legacy_hal::wifi_ring_buffer_status& legacy_status,
+        WifiDebugRingBufferStatus* hidl_status) {
+    if (!hidl_status) {
+        return false;
+    }
+    *hidl_status = {};
+    hidl_status->ringName = safeConvertChar(reinterpret_cast<const char*>(legacy_status.name),
+                                            sizeof(legacy_status.name));
+    hidl_status->flags = 0;
+    for (const auto flag :
+         {WIFI_RING_BUFFER_FLAG_HAS_BINARY_ENTRIES, WIFI_RING_BUFFER_FLAG_HAS_ASCII_ENTRIES}) {
+        if (flag & legacy_status.flags) {
+            hidl_status->flags |= static_cast<std::underlying_type<WifiDebugRingBufferFlags>::type>(
+                    convertLegacyDebugRingBufferFlagsToHidl(flag));
+        }
+    }
+    hidl_status->ringId = legacy_status.ring_id;
+    hidl_status->sizeInBytes = legacy_status.ring_buffer_byte_size;
+    // Calculate free size of the ring the buffer. We don't need to send the
+    // exact read/write pointers that were there in the legacy HAL interface.
+    if (legacy_status.written_bytes >= legacy_status.read_bytes) {
+        hidl_status->freeSizeInBytes = legacy_status.ring_buffer_byte_size -
+                                       (legacy_status.written_bytes - legacy_status.read_bytes);
+    } else {
+        hidl_status->freeSizeInBytes = legacy_status.read_bytes - legacy_status.written_bytes;
+    }
+    hidl_status->verboseLevel = legacy_status.verbose_level;
+    return true;
+}
+
+bool convertLegacyVectorOfDebugRingBufferStatusToHidl(
+        const std::vector<legacy_hal::wifi_ring_buffer_status>& legacy_status_vec,
+        std::vector<WifiDebugRingBufferStatus>* hidl_status_vec) {
+    if (!hidl_status_vec) {
+        return false;
+    }
+    *hidl_status_vec = {};
+    for (const auto& legacy_status : legacy_status_vec) {
+        WifiDebugRingBufferStatus hidl_status;
+        if (!convertLegacyDebugRingBufferStatusToHidl(legacy_status, &hidl_status)) {
+            return false;
+        }
+        hidl_status_vec->push_back(hidl_status);
+    }
+    return true;
+}
+
+bool convertLegacyWakeReasonStatsToHidl(const legacy_hal::WakeReasonStats& legacy_stats,
+                                        WifiDebugHostWakeReasonStats* hidl_stats) {
+    if (!hidl_stats) {
+        return false;
+    }
+    *hidl_stats = {};
+    hidl_stats->totalCmdEventWakeCnt = legacy_stats.wake_reason_cnt.total_cmd_event_wake;
+    hidl_stats->cmdEventWakeCntPerType = legacy_stats.cmd_event_wake_cnt;
+    hidl_stats->totalDriverFwLocalWakeCnt = legacy_stats.wake_reason_cnt.total_driver_fw_local_wake;
+    hidl_stats->driverFwLocalWakeCntPerType = legacy_stats.driver_fw_local_wake_cnt;
+    hidl_stats->totalRxPacketWakeCnt = legacy_stats.wake_reason_cnt.total_rx_data_wake;
+    hidl_stats->rxPktWakeDetails.rxUnicastCnt =
+            legacy_stats.wake_reason_cnt.rx_wake_details.rx_unicast_cnt;
+    hidl_stats->rxPktWakeDetails.rxMulticastCnt =
+            legacy_stats.wake_reason_cnt.rx_wake_details.rx_multicast_cnt;
+    hidl_stats->rxPktWakeDetails.rxBroadcastCnt =
+            legacy_stats.wake_reason_cnt.rx_wake_details.rx_broadcast_cnt;
+    hidl_stats->rxMulticastPkWakeDetails.ipv4RxMulticastAddrCnt =
+            legacy_stats.wake_reason_cnt.rx_multicast_wake_pkt_info.ipv4_rx_multicast_addr_cnt;
+    hidl_stats->rxMulticastPkWakeDetails.ipv6RxMulticastAddrCnt =
+            legacy_stats.wake_reason_cnt.rx_multicast_wake_pkt_info.ipv6_rx_multicast_addr_cnt;
+    hidl_stats->rxMulticastPkWakeDetails.otherRxMulticastAddrCnt =
+            legacy_stats.wake_reason_cnt.rx_multicast_wake_pkt_info.other_rx_multicast_addr_cnt;
+    hidl_stats->rxIcmpPkWakeDetails.icmpPkt =
+            legacy_stats.wake_reason_cnt.rx_wake_pkt_classification_info.icmp_pkt;
+    hidl_stats->rxIcmpPkWakeDetails.icmp6Pkt =
+            legacy_stats.wake_reason_cnt.rx_wake_pkt_classification_info.icmp6_pkt;
+    hidl_stats->rxIcmpPkWakeDetails.icmp6Ra =
+            legacy_stats.wake_reason_cnt.rx_wake_pkt_classification_info.icmp6_ra;
+    hidl_stats->rxIcmpPkWakeDetails.icmp6Na =
+            legacy_stats.wake_reason_cnt.rx_wake_pkt_classification_info.icmp6_na;
+    hidl_stats->rxIcmpPkWakeDetails.icmp6Ns =
+            legacy_stats.wake_reason_cnt.rx_wake_pkt_classification_info.icmp6_ns;
+    return true;
+}
+
+legacy_hal::wifi_power_scenario convertHidlTxPowerScenarioToLegacy(
+        V1_1::IWifiChip::TxPowerScenario hidl_scenario) {
+    switch (hidl_scenario) {
+        // This is the only supported scenario for V1_1
+        case V1_1::IWifiChip::TxPowerScenario::VOICE_CALL:
+            return legacy_hal::WIFI_POWER_SCENARIO_VOICE_CALL;
+    };
+    CHECK(false);
+}
+
+legacy_hal::wifi_power_scenario convertHidlTxPowerScenarioToLegacy_1_2(
+        V1_2::IWifiChip::TxPowerScenario hidl_scenario) {
+    switch (hidl_scenario) {
+        // This is the only supported scenario for V1_1
+        case V1_2::IWifiChip::TxPowerScenario::VOICE_CALL:
+            return legacy_hal::WIFI_POWER_SCENARIO_VOICE_CALL;
+        // Those are the supported scenarios for V1_2
+        case V1_2::IWifiChip::TxPowerScenario::ON_HEAD_CELL_OFF:
+            return legacy_hal::WIFI_POWER_SCENARIO_ON_HEAD_CELL_OFF;
+        case V1_2::IWifiChip::TxPowerScenario::ON_HEAD_CELL_ON:
+            return legacy_hal::WIFI_POWER_SCENARIO_ON_HEAD_CELL_ON;
+        case V1_2::IWifiChip::TxPowerScenario::ON_BODY_CELL_OFF:
+            return legacy_hal::WIFI_POWER_SCENARIO_ON_BODY_CELL_OFF;
+        case V1_2::IWifiChip::TxPowerScenario::ON_BODY_CELL_ON:
+            return legacy_hal::WIFI_POWER_SCENARIO_ON_BODY_CELL_ON;
+    };
+    CHECK(false);
+}
+
+legacy_hal::wifi_latency_mode convertHidlLatencyModeToLegacy(
+        V1_3::IWifiChip::LatencyMode hidl_latency_mode) {
+    switch (hidl_latency_mode) {
+        case V1_3::IWifiChip::LatencyMode::NORMAL:
+            return legacy_hal::WIFI_LATENCY_MODE_NORMAL;
+        case V1_3::IWifiChip::LatencyMode::LOW:
+            return legacy_hal::WIFI_LATENCY_MODE_LOW;
+    }
+    CHECK(false);
+}
+
+bool convertLegacyWifiMacInfoToHidl(
+        const legacy_hal::WifiMacInfo& legacy_mac_info,
+        V1_4::IWifiChipEventCallback::RadioModeInfo* hidl_radio_mode_info) {
+    if (!hidl_radio_mode_info) {
+        return false;
+    }
+    *hidl_radio_mode_info = {};
+
+    hidl_radio_mode_info->radioId = legacy_mac_info.wlan_mac_id;
+    // Convert from bitmask of bands in the legacy HAL to enum value in
+    // the HIDL interface.
+    if (legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_6_0_BAND &&
+        legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_5_0_BAND &&
+        legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_2_4_BAND) {
+        hidl_radio_mode_info->bandInfo = V1_4::WifiBand::BAND_24GHZ_5GHZ_6GHZ;
+    } else if (legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_6_0_BAND &&
+               legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_5_0_BAND) {
+        hidl_radio_mode_info->bandInfo = V1_4::WifiBand::BAND_5GHZ_6GHZ;
+    } else if (legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_6_0_BAND) {
+        hidl_radio_mode_info->bandInfo = V1_4::WifiBand::BAND_6GHZ;
+    } else if (legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_2_4_BAND &&
+               legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_5_0_BAND) {
+        hidl_radio_mode_info->bandInfo = V1_4::WifiBand::BAND_24GHZ_5GHZ;
+    } else if (legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_2_4_BAND) {
+        hidl_radio_mode_info->bandInfo = V1_4::WifiBand::BAND_24GHZ;
+    } else if (legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_5_0_BAND) {
+        hidl_radio_mode_info->bandInfo = V1_4::WifiBand::BAND_5GHZ;
+    } else {
+        hidl_radio_mode_info->bandInfo = V1_4::WifiBand::BAND_UNSPECIFIED;
+    }
+    std::vector<V1_2::IWifiChipEventCallback::IfaceInfo> iface_info_vec;
+    for (const auto& legacy_iface_info : legacy_mac_info.iface_infos) {
+        V1_2::IWifiChipEventCallback::IfaceInfo iface_info;
+        iface_info.name = legacy_iface_info.name;
+        iface_info.channel = legacy_iface_info.channel;
+        iface_info_vec.push_back(iface_info);
+    }
+    hidl_radio_mode_info->ifaceInfos = iface_info_vec;
+    return true;
+}
+
+uint32_t convertHidlWifiBandToLegacyMacBand(V1_5::WifiBand hidl_band) {
+    switch (hidl_band) {
+        case V1_5::WifiBand::BAND_24GHZ:
+            return legacy_hal::WLAN_MAC_2_4_BAND;
+        case V1_5::WifiBand::BAND_5GHZ:
+        case V1_5::WifiBand::BAND_5GHZ_DFS:
+        case V1_5::WifiBand::BAND_5GHZ_WITH_DFS:
+            return legacy_hal::WLAN_MAC_5_0_BAND;
+        case V1_5::WifiBand::BAND_24GHZ_5GHZ:
+        case V1_5::WifiBand::BAND_24GHZ_5GHZ_WITH_DFS:
+            return (legacy_hal::WLAN_MAC_2_4_BAND | legacy_hal::WLAN_MAC_5_0_BAND);
+        case V1_5::WifiBand::BAND_6GHZ:
+            return legacy_hal::WLAN_MAC_6_0_BAND;
+        case V1_5::WifiBand::BAND_5GHZ_6GHZ:
+            return (legacy_hal::WLAN_MAC_5_0_BAND | legacy_hal::WLAN_MAC_6_0_BAND);
+        case V1_5::WifiBand::BAND_24GHZ_5GHZ_6GHZ:
+        case V1_5::WifiBand::BAND_24GHZ_5GHZ_WITH_DFS_6GHZ:
+            return (legacy_hal::WLAN_MAC_2_4_BAND | legacy_hal::WLAN_MAC_5_0_BAND |
+                    legacy_hal::WLAN_MAC_6_0_BAND);
+        case V1_5::WifiBand::BAND_60GHZ:
+            return legacy_hal::WLAN_MAC_60_0_BAND;
+        default:
+            return (legacy_hal::WLAN_MAC_2_4_BAND | legacy_hal::WLAN_MAC_5_0_BAND |
+                    legacy_hal::WLAN_MAC_6_0_BAND | legacy_hal::WLAN_MAC_60_0_BAND);
+    }
+}
+
+uint32_t convertHidlWifiIfaceModeToLegacy(uint32_t hidl_iface_mask) {
+    uint32_t legacy_iface_mask = 0;
+    if (hidl_iface_mask & V1_5::WifiIfaceMode::IFACE_MODE_STA) {
+        legacy_iface_mask |= (1 << legacy_hal::WIFI_INTERFACE_STA);
+    }
+    if (hidl_iface_mask & V1_5::WifiIfaceMode::IFACE_MODE_SOFTAP) {
+        legacy_iface_mask |= (1 << legacy_hal::WIFI_INTERFACE_SOFTAP);
+    }
+    if (hidl_iface_mask & V1_5::WifiIfaceMode::IFACE_MODE_P2P_CLIENT) {
+        legacy_iface_mask |= (1 << legacy_hal::WIFI_INTERFACE_P2P_CLIENT);
+    }
+    if (hidl_iface_mask & V1_5::WifiIfaceMode::IFACE_MODE_P2P_GO) {
+        legacy_iface_mask |= (1 << legacy_hal::WIFI_INTERFACE_P2P_GO);
+    }
+    if (hidl_iface_mask & V1_5::WifiIfaceMode::IFACE_MODE_NAN) {
+        legacy_iface_mask |= (1 << legacy_hal::WIFI_INTERFACE_NAN);
+    }
+    if (hidl_iface_mask & V1_5::WifiIfaceMode::IFACE_MODE_TDLS) {
+        legacy_iface_mask |= (1 << legacy_hal::WIFI_INTERFACE_TDLS);
+    }
+    if (hidl_iface_mask & V1_5::WifiIfaceMode::IFACE_MODE_MESH) {
+        legacy_iface_mask |= (1 << legacy_hal::WIFI_INTERFACE_MESH);
+    }
+    if (hidl_iface_mask & V1_5::WifiIfaceMode::IFACE_MODE_IBSS) {
+        legacy_iface_mask |= (1 << legacy_hal::WIFI_INTERFACE_IBSS);
+    }
+    return legacy_iface_mask;
+}
+
+uint32_t convertLegacyWifiInterfaceModeToHidl(uint32_t legacy_iface_mask) {
+    uint32_t hidl_iface_mask = 0;
+    if (legacy_iface_mask & (1 << legacy_hal::WIFI_INTERFACE_STA)) {
+        hidl_iface_mask |= V1_5::WifiIfaceMode::IFACE_MODE_STA;
+    }
+    if (legacy_iface_mask & (1 << legacy_hal::WIFI_INTERFACE_SOFTAP)) {
+        hidl_iface_mask |= V1_5::WifiIfaceMode::IFACE_MODE_SOFTAP;
+    }
+    if (legacy_iface_mask & (1 << legacy_hal::WIFI_INTERFACE_P2P_CLIENT)) {
+        hidl_iface_mask |= V1_5::WifiIfaceMode::IFACE_MODE_P2P_CLIENT;
+    }
+    if (legacy_iface_mask & (1 << legacy_hal::WIFI_INTERFACE_P2P_GO)) {
+        hidl_iface_mask |= V1_5::WifiIfaceMode::IFACE_MODE_P2P_GO;
+    }
+    if (legacy_iface_mask & (1 << legacy_hal::WIFI_INTERFACE_NAN)) {
+        hidl_iface_mask |= V1_5::WifiIfaceMode::IFACE_MODE_NAN;
+    }
+    if (legacy_iface_mask & (1 << legacy_hal::WIFI_INTERFACE_TDLS)) {
+        hidl_iface_mask |= V1_5::WifiIfaceMode::IFACE_MODE_TDLS;
+    }
+    if (legacy_iface_mask & (1 << legacy_hal::WIFI_INTERFACE_MESH)) {
+        hidl_iface_mask |= V1_5::WifiIfaceMode::IFACE_MODE_MESH;
+    }
+    if (legacy_iface_mask & (1 << legacy_hal::WIFI_INTERFACE_IBSS)) {
+        hidl_iface_mask |= V1_5::WifiIfaceMode::IFACE_MODE_IBSS;
+    }
+    return hidl_iface_mask;
+}
+
+uint32_t convertHidlUsableChannelFilterToLegacy(uint32_t hidl_filter_mask) {
+    uint32_t legacy_filter_mask = 0;
+    if (hidl_filter_mask & V1_5::IWifiChip::UsableChannelFilter::CELLULAR_COEXISTENCE) {
+        legacy_filter_mask |= legacy_hal::WIFI_USABLE_CHANNEL_FILTER_CELLULAR_COEXISTENCE;
+    }
+    if (hidl_filter_mask & V1_5::IWifiChip::UsableChannelFilter::CONCURRENCY) {
+        legacy_filter_mask |= legacy_hal::WIFI_USABLE_CHANNEL_FILTER_CONCURRENCY;
+    }
+    return legacy_filter_mask;
+}
+
+bool convertLegacyWifiUsableChannelToHidl(
+        const legacy_hal::wifi_usable_channel& legacy_usable_channel,
+        V1_5::WifiUsableChannel* hidl_usable_channel) {
+    if (!hidl_usable_channel) {
+        return false;
+    }
+    *hidl_usable_channel = {};
+    hidl_usable_channel->channel = legacy_usable_channel.freq;
+    hidl_usable_channel->channelBandwidth =
+            convertLegacyWifiChannelWidthToHidl(legacy_usable_channel.width);
+    hidl_usable_channel->ifaceModeMask =
+            convertLegacyWifiInterfaceModeToHidl(legacy_usable_channel.iface_mode_mask);
+
+    return true;
+}
+
+bool convertLegacyWifiUsableChannelsToHidl(
+        const std::vector<legacy_hal::wifi_usable_channel>& legacy_usable_channels,
+        std::vector<V1_5::WifiUsableChannel>* hidl_usable_channels) {
+    if (!hidl_usable_channels) {
+        return false;
+    }
+    *hidl_usable_channels = {};
+    for (const auto& legacy_usable_channel : legacy_usable_channels) {
+        V1_5::WifiUsableChannel hidl_usable_channel;
+        if (!convertLegacyWifiUsableChannelToHidl(legacy_usable_channel, &hidl_usable_channel)) {
+            return false;
+        }
+        hidl_usable_channels->push_back(hidl_usable_channel);
+    }
+    return true;
+}
+
+bool convertLegacyWifiMacInfosToHidl(
+        const std::vector<legacy_hal::WifiMacInfo>& legacy_mac_infos,
+        std::vector<V1_4::IWifiChipEventCallback::RadioModeInfo>* hidl_radio_mode_infos) {
+    if (!hidl_radio_mode_infos) {
+        return false;
+    }
+    *hidl_radio_mode_infos = {};
+
+    for (const auto& legacy_mac_info : legacy_mac_infos) {
+        V1_4::IWifiChipEventCallback::RadioModeInfo hidl_radio_mode_info;
+        if (!convertLegacyWifiMacInfoToHidl(legacy_mac_info, &hidl_radio_mode_info)) {
+            return false;
+        }
+        hidl_radio_mode_infos->push_back(hidl_radio_mode_info);
+    }
+    return true;
+}
+
+bool convertLegacyFeaturesToHidlStaCapabilities(uint64_t legacy_feature_set,
+                                                uint32_t legacy_logger_feature_set,
+                                                uint32_t* hidl_caps) {
+    if (!hidl_caps) {
+        return false;
+    }
+    *hidl_caps = {};
+    using HidlStaIfaceCaps = IWifiStaIface::StaIfaceCapabilityMask;
+    for (const auto feature : {legacy_hal::WIFI_LOGGER_PACKET_FATE_SUPPORTED}) {
+        if (feature & legacy_logger_feature_set) {
+            *hidl_caps |= convertLegacyLoggerFeatureToHidlStaIfaceCapability(feature);
+        }
+    }
+    for (const auto feature :
+         {WIFI_FEATURE_GSCAN, WIFI_FEATURE_LINK_LAYER_STATS, WIFI_FEATURE_RSSI_MONITOR,
+          WIFI_FEATURE_CONTROL_ROAMING, WIFI_FEATURE_IE_WHITELIST, WIFI_FEATURE_SCAN_RAND,
+          WIFI_FEATURE_INFRA_5G, WIFI_FEATURE_HOTSPOT, WIFI_FEATURE_PNO, WIFI_FEATURE_TDLS,
+          WIFI_FEATURE_TDLS_OFFCHANNEL, WIFI_FEATURE_CONFIG_NDO, WIFI_FEATURE_MKEEP_ALIVE}) {
+        if (feature & legacy_feature_set) {
+            *hidl_caps |= convertLegacyFeatureToHidlStaIfaceCapability(feature);
+        }
+    }
+    // There is no flag for this one in the legacy feature set. Adding it to the
+    // set because all the current devices support it.
+    *hidl_caps |= HidlStaIfaceCaps::APF;
+    return true;
+}
+
+bool convertLegacyApfCapabilitiesToHidl(const legacy_hal::PacketFilterCapabilities& legacy_caps,
+                                        StaApfPacketFilterCapabilities* hidl_caps) {
+    if (!hidl_caps) {
+        return false;
+    }
+    *hidl_caps = {};
+    hidl_caps->version = legacy_caps.version;
+    hidl_caps->maxLength = legacy_caps.max_len;
+    return true;
+}
+
+uint8_t convertHidlGscanReportEventFlagToLegacy(
+        StaBackgroundScanBucketEventReportSchemeMask hidl_flag) {
+    using HidlFlag = StaBackgroundScanBucketEventReportSchemeMask;
+    switch (hidl_flag) {
+        case HidlFlag::EACH_SCAN:
+            return REPORT_EVENTS_EACH_SCAN;
+        case HidlFlag::FULL_RESULTS:
+            return REPORT_EVENTS_FULL_RESULTS;
+        case HidlFlag::NO_BATCH:
+            return REPORT_EVENTS_NO_BATCH;
+    };
+    CHECK(false);
+}
+
+StaScanDataFlagMask convertLegacyGscanDataFlagToHidl(uint8_t legacy_flag) {
+    switch (legacy_flag) {
+        case legacy_hal::WIFI_SCAN_FLAG_INTERRUPTED:
+            return StaScanDataFlagMask::INTERRUPTED;
+    };
+    CHECK(false) << "Unknown legacy flag: " << legacy_flag;
+    // To silence the compiler warning about reaching the end of non-void
+    // function.
+    return {};
+}
+
+bool convertLegacyGscanCapabilitiesToHidl(const legacy_hal::wifi_gscan_capabilities& legacy_caps,
+                                          StaBackgroundScanCapabilities* hidl_caps) {
+    if (!hidl_caps) {
+        return false;
+    }
+    *hidl_caps = {};
+    hidl_caps->maxCacheSize = legacy_caps.max_scan_cache_size;
+    hidl_caps->maxBuckets = legacy_caps.max_scan_buckets;
+    hidl_caps->maxApCachePerScan = legacy_caps.max_ap_cache_per_scan;
+    hidl_caps->maxReportingThreshold = legacy_caps.max_scan_reporting_threshold;
+    return true;
+}
+
+legacy_hal::wifi_band convertHidlWifiBandToLegacy(V1_0::WifiBand band) {
+    switch (band) {
+        case V1_0::WifiBand::BAND_UNSPECIFIED:
+            return legacy_hal::WIFI_BAND_UNSPECIFIED;
+        case V1_0::WifiBand::BAND_24GHZ:
+            return legacy_hal::WIFI_BAND_BG;
+        case V1_0::WifiBand::BAND_5GHZ:
+            return legacy_hal::WIFI_BAND_A;
+        case V1_0::WifiBand::BAND_5GHZ_DFS:
+            return legacy_hal::WIFI_BAND_A_DFS;
+        case V1_0::WifiBand::BAND_5GHZ_WITH_DFS:
+            return legacy_hal::WIFI_BAND_A_WITH_DFS;
+        case V1_0::WifiBand::BAND_24GHZ_5GHZ:
+            return legacy_hal::WIFI_BAND_ABG;
+        case V1_0::WifiBand::BAND_24GHZ_5GHZ_WITH_DFS:
+            return legacy_hal::WIFI_BAND_ABG_WITH_DFS;
+    };
+    CHECK(false);
+}
+
+bool convertHidlGscanParamsToLegacy(const StaBackgroundScanParameters& hidl_scan_params,
+                                    legacy_hal::wifi_scan_cmd_params* legacy_scan_params) {
+    if (!legacy_scan_params) {
+        return false;
+    }
+    *legacy_scan_params = {};
+    legacy_scan_params->base_period = hidl_scan_params.basePeriodInMs;
+    legacy_scan_params->max_ap_per_scan = hidl_scan_params.maxApPerScan;
+    legacy_scan_params->report_threshold_percent = hidl_scan_params.reportThresholdPercent;
+    legacy_scan_params->report_threshold_num_scans = hidl_scan_params.reportThresholdNumScans;
+    if (hidl_scan_params.buckets.size() > MAX_BUCKETS) {
+        return false;
+    }
+    legacy_scan_params->num_buckets = hidl_scan_params.buckets.size();
+    for (uint32_t bucket_idx = 0; bucket_idx < hidl_scan_params.buckets.size(); bucket_idx++) {
+        const StaBackgroundScanBucketParameters& hidl_bucket_spec =
+                hidl_scan_params.buckets[bucket_idx];
+        legacy_hal::wifi_scan_bucket_spec& legacy_bucket_spec =
+                legacy_scan_params->buckets[bucket_idx];
+        if (hidl_bucket_spec.bucketIdx >= MAX_BUCKETS) {
+            return false;
+        }
+        legacy_bucket_spec.bucket = hidl_bucket_spec.bucketIdx;
+        legacy_bucket_spec.band = convertHidlWifiBandToLegacy(hidl_bucket_spec.band);
+        legacy_bucket_spec.period = hidl_bucket_spec.periodInMs;
+        legacy_bucket_spec.max_period = hidl_bucket_spec.exponentialMaxPeriodInMs;
+        legacy_bucket_spec.base = hidl_bucket_spec.exponentialBase;
+        legacy_bucket_spec.step_count = hidl_bucket_spec.exponentialStepCount;
+        legacy_bucket_spec.report_events = 0;
+        using HidlFlag = StaBackgroundScanBucketEventReportSchemeMask;
+        for (const auto flag : {HidlFlag::EACH_SCAN, HidlFlag::FULL_RESULTS, HidlFlag::NO_BATCH}) {
+            if (hidl_bucket_spec.eventReportScheme &
+                static_cast<std::underlying_type<HidlFlag>::type>(flag)) {
+                legacy_bucket_spec.report_events |= convertHidlGscanReportEventFlagToLegacy(flag);
+            }
+        }
+        if (hidl_bucket_spec.frequencies.size() > MAX_CHANNELS) {
+            return false;
+        }
+        legacy_bucket_spec.num_channels = hidl_bucket_spec.frequencies.size();
+        for (uint32_t freq_idx = 0; freq_idx < hidl_bucket_spec.frequencies.size(); freq_idx++) {
+            legacy_bucket_spec.channels[freq_idx].channel = hidl_bucket_spec.frequencies[freq_idx];
+        }
+    }
+    return true;
+}
+
+bool convertLegacyIeToHidl(const legacy_hal::wifi_information_element& legacy_ie,
+                           WifiInformationElement* hidl_ie) {
+    if (!hidl_ie) {
+        return false;
+    }
+    *hidl_ie = {};
+    hidl_ie->id = legacy_ie.id;
+    hidl_ie->data = std::vector<uint8_t>(legacy_ie.data, legacy_ie.data + legacy_ie.len);
+    return true;
+}
+
+bool convertLegacyIeBlobToHidl(const uint8_t* ie_blob, uint32_t ie_blob_len,
+                               std::vector<WifiInformationElement>* hidl_ies) {
+    if (!ie_blob || !hidl_ies) {
+        return false;
+    }
+    *hidl_ies = {};
+    const uint8_t* ies_begin = ie_blob;
+    const uint8_t* ies_end = ie_blob + ie_blob_len;
+    const uint8_t* next_ie = ies_begin;
+    using wifi_ie = legacy_hal::wifi_information_element;
+    constexpr size_t kIeHeaderLen = sizeof(wifi_ie);
+    // Each IE should atleast have the header (i.e |id| & |len| fields).
+    while (next_ie + kIeHeaderLen <= ies_end) {
+        const wifi_ie& legacy_ie = (*reinterpret_cast<const wifi_ie*>(next_ie));
+        uint32_t curr_ie_len = kIeHeaderLen + legacy_ie.len;
+        if (next_ie + curr_ie_len > ies_end) {
+            LOG(ERROR) << "Error parsing IE blob. Next IE: " << (void*)next_ie
+                       << ", Curr IE len: " << curr_ie_len << ", IEs End: " << (void*)ies_end;
+            break;
+        }
+        WifiInformationElement hidl_ie;
+        if (!convertLegacyIeToHidl(legacy_ie, &hidl_ie)) {
+            LOG(ERROR) << "Error converting IE. Id: " << legacy_ie.id << ", len: " << legacy_ie.len;
+            break;
+        }
+        hidl_ies->push_back(std::move(hidl_ie));
+        next_ie += curr_ie_len;
+    }
+    // Check if the blob has been fully consumed.
+    if (next_ie != ies_end) {
+        LOG(ERROR) << "Failed to fully parse IE blob. Next IE: " << (void*)next_ie
+                   << ", IEs End: " << (void*)ies_end;
+    }
+    return true;
+}
+
+bool convertLegacyGscanResultToHidl(const legacy_hal::wifi_scan_result& legacy_scan_result,
+                                    bool has_ie_data, StaScanResult* hidl_scan_result) {
+    if (!hidl_scan_result) {
+        return false;
+    }
+    *hidl_scan_result = {};
+    hidl_scan_result->timeStampInUs = legacy_scan_result.ts;
+    hidl_scan_result->ssid = std::vector<uint8_t>(
+            legacy_scan_result.ssid,
+            legacy_scan_result.ssid +
+                    strnlen(legacy_scan_result.ssid, sizeof(legacy_scan_result.ssid) - 1));
+    memcpy(hidl_scan_result->bssid.data(), legacy_scan_result.bssid,
+           hidl_scan_result->bssid.size());
+    hidl_scan_result->frequency = legacy_scan_result.channel;
+    hidl_scan_result->rssi = legacy_scan_result.rssi;
+    hidl_scan_result->beaconPeriodInMs = legacy_scan_result.beacon_period;
+    hidl_scan_result->capability = legacy_scan_result.capability;
+    if (has_ie_data) {
+        std::vector<WifiInformationElement> ies;
+        if (!convertLegacyIeBlobToHidl(reinterpret_cast<const uint8_t*>(legacy_scan_result.ie_data),
+                                       legacy_scan_result.ie_length, &ies)) {
+            return false;
+        }
+        hidl_scan_result->informationElements = std::move(ies);
+    }
+    return true;
+}
+
+bool convertLegacyCachedGscanResultsToHidl(
+        const legacy_hal::wifi_cached_scan_results& legacy_cached_scan_result,
+        StaScanData* hidl_scan_data) {
+    if (!hidl_scan_data) {
+        return false;
+    }
+    *hidl_scan_data = {};
+    hidl_scan_data->flags = 0;
+    for (const auto flag : {legacy_hal::WIFI_SCAN_FLAG_INTERRUPTED}) {
+        if (legacy_cached_scan_result.flags & flag) {
+            hidl_scan_data->flags |= static_cast<std::underlying_type<StaScanDataFlagMask>::type>(
+                    convertLegacyGscanDataFlagToHidl(flag));
+        }
+    }
+    hidl_scan_data->bucketsScanned = legacy_cached_scan_result.buckets_scanned;
+
+    CHECK(legacy_cached_scan_result.num_results >= 0 &&
+          legacy_cached_scan_result.num_results <= MAX_AP_CACHE_PER_SCAN);
+    std::vector<StaScanResult> hidl_scan_results;
+    for (int32_t result_idx = 0; result_idx < legacy_cached_scan_result.num_results; result_idx++) {
+        StaScanResult hidl_scan_result;
+        if (!convertLegacyGscanResultToHidl(legacy_cached_scan_result.results[result_idx], false,
+                                            &hidl_scan_result)) {
+            return false;
+        }
+        hidl_scan_results.push_back(hidl_scan_result);
+    }
+    hidl_scan_data->results = std::move(hidl_scan_results);
+    return true;
+}
+
+bool convertLegacyVectorOfCachedGscanResultsToHidl(
+        const std::vector<legacy_hal::wifi_cached_scan_results>& legacy_cached_scan_results,
+        std::vector<StaScanData>* hidl_scan_datas) {
+    if (!hidl_scan_datas) {
+        return false;
+    }
+    *hidl_scan_datas = {};
+    for (const auto& legacy_cached_scan_result : legacy_cached_scan_results) {
+        StaScanData hidl_scan_data;
+        if (!convertLegacyCachedGscanResultsToHidl(legacy_cached_scan_result, &hidl_scan_data)) {
+            return false;
+        }
+        hidl_scan_datas->push_back(hidl_scan_data);
+    }
+    return true;
+}
+
+WifiDebugTxPacketFate convertLegacyDebugTxPacketFateToHidl(legacy_hal::wifi_tx_packet_fate fate) {
+    switch (fate) {
+        case legacy_hal::TX_PKT_FATE_ACKED:
+            return WifiDebugTxPacketFate::ACKED;
+        case legacy_hal::TX_PKT_FATE_SENT:
+            return WifiDebugTxPacketFate::SENT;
+        case legacy_hal::TX_PKT_FATE_FW_QUEUED:
+            return WifiDebugTxPacketFate::FW_QUEUED;
+        case legacy_hal::TX_PKT_FATE_FW_DROP_INVALID:
+            return WifiDebugTxPacketFate::FW_DROP_INVALID;
+        case legacy_hal::TX_PKT_FATE_FW_DROP_NOBUFS:
+            return WifiDebugTxPacketFate::FW_DROP_NOBUFS;
+        case legacy_hal::TX_PKT_FATE_FW_DROP_OTHER:
+            return WifiDebugTxPacketFate::FW_DROP_OTHER;
+        case legacy_hal::TX_PKT_FATE_DRV_QUEUED:
+            return WifiDebugTxPacketFate::DRV_QUEUED;
+        case legacy_hal::TX_PKT_FATE_DRV_DROP_INVALID:
+            return WifiDebugTxPacketFate::DRV_DROP_INVALID;
+        case legacy_hal::TX_PKT_FATE_DRV_DROP_NOBUFS:
+            return WifiDebugTxPacketFate::DRV_DROP_NOBUFS;
+        case legacy_hal::TX_PKT_FATE_DRV_DROP_OTHER:
+            return WifiDebugTxPacketFate::DRV_DROP_OTHER;
+    };
+    CHECK(false) << "Unknown legacy fate type: " << fate;
+}
+
+WifiDebugRxPacketFate convertLegacyDebugRxPacketFateToHidl(legacy_hal::wifi_rx_packet_fate fate) {
+    switch (fate) {
+        case legacy_hal::RX_PKT_FATE_SUCCESS:
+            return WifiDebugRxPacketFate::SUCCESS;
+        case legacy_hal::RX_PKT_FATE_FW_QUEUED:
+            return WifiDebugRxPacketFate::FW_QUEUED;
+        case legacy_hal::RX_PKT_FATE_FW_DROP_FILTER:
+            return WifiDebugRxPacketFate::FW_DROP_FILTER;
+        case legacy_hal::RX_PKT_FATE_FW_DROP_INVALID:
+            return WifiDebugRxPacketFate::FW_DROP_INVALID;
+        case legacy_hal::RX_PKT_FATE_FW_DROP_NOBUFS:
+            return WifiDebugRxPacketFate::FW_DROP_NOBUFS;
+        case legacy_hal::RX_PKT_FATE_FW_DROP_OTHER:
+            return WifiDebugRxPacketFate::FW_DROP_OTHER;
+        case legacy_hal::RX_PKT_FATE_DRV_QUEUED:
+            return WifiDebugRxPacketFate::DRV_QUEUED;
+        case legacy_hal::RX_PKT_FATE_DRV_DROP_FILTER:
+            return WifiDebugRxPacketFate::DRV_DROP_FILTER;
+        case legacy_hal::RX_PKT_FATE_DRV_DROP_INVALID:
+            return WifiDebugRxPacketFate::DRV_DROP_INVALID;
+        case legacy_hal::RX_PKT_FATE_DRV_DROP_NOBUFS:
+            return WifiDebugRxPacketFate::DRV_DROP_NOBUFS;
+        case legacy_hal::RX_PKT_FATE_DRV_DROP_OTHER:
+            return WifiDebugRxPacketFate::DRV_DROP_OTHER;
+    };
+    CHECK(false) << "Unknown legacy fate type: " << fate;
+}
+
+WifiDebugPacketFateFrameType convertLegacyDebugPacketFateFrameTypeToHidl(
+        legacy_hal::frame_type type) {
+    switch (type) {
+        case legacy_hal::FRAME_TYPE_UNKNOWN:
+            return WifiDebugPacketFateFrameType::UNKNOWN;
+        case legacy_hal::FRAME_TYPE_ETHERNET_II:
+            return WifiDebugPacketFateFrameType::ETHERNET_II;
+        case legacy_hal::FRAME_TYPE_80211_MGMT:
+            return WifiDebugPacketFateFrameType::MGMT_80211;
+    };
+    CHECK(false) << "Unknown legacy frame type: " << type;
+}
+
+bool convertLegacyDebugPacketFateFrameToHidl(const legacy_hal::frame_info& legacy_frame,
+                                             WifiDebugPacketFateFrameInfo* hidl_frame) {
+    if (!hidl_frame) {
+        return false;
+    }
+    *hidl_frame = {};
+    hidl_frame->frameType = convertLegacyDebugPacketFateFrameTypeToHidl(legacy_frame.payload_type);
+    hidl_frame->frameLen = legacy_frame.frame_len;
+    hidl_frame->driverTimestampUsec = legacy_frame.driver_timestamp_usec;
+    hidl_frame->firmwareTimestampUsec = legacy_frame.firmware_timestamp_usec;
+    const uint8_t* frame_begin =
+            reinterpret_cast<const uint8_t*>(legacy_frame.frame_content.ethernet_ii_bytes);
+    hidl_frame->frameContent =
+            std::vector<uint8_t>(frame_begin, frame_begin + legacy_frame.frame_len);
+    return true;
+}
+
+bool convertLegacyDebugTxPacketFateToHidl(const legacy_hal::wifi_tx_report& legacy_fate,
+                                          WifiDebugTxPacketFateReport* hidl_fate) {
+    if (!hidl_fate) {
+        return false;
+    }
+    *hidl_fate = {};
+    hidl_fate->fate = convertLegacyDebugTxPacketFateToHidl(legacy_fate.fate);
+    return convertLegacyDebugPacketFateFrameToHidl(legacy_fate.frame_inf, &hidl_fate->frameInfo);
+}
+
+bool convertLegacyVectorOfDebugTxPacketFateToHidl(
+        const std::vector<legacy_hal::wifi_tx_report>& legacy_fates,
+        std::vector<WifiDebugTxPacketFateReport>* hidl_fates) {
+    if (!hidl_fates) {
+        return false;
+    }
+    *hidl_fates = {};
+    for (const auto& legacy_fate : legacy_fates) {
+        WifiDebugTxPacketFateReport hidl_fate;
+        if (!convertLegacyDebugTxPacketFateToHidl(legacy_fate, &hidl_fate)) {
+            return false;
+        }
+        hidl_fates->push_back(hidl_fate);
+    }
+    return true;
+}
+
+bool convertLegacyDebugRxPacketFateToHidl(const legacy_hal::wifi_rx_report& legacy_fate,
+                                          WifiDebugRxPacketFateReport* hidl_fate) {
+    if (!hidl_fate) {
+        return false;
+    }
+    *hidl_fate = {};
+    hidl_fate->fate = convertLegacyDebugRxPacketFateToHidl(legacy_fate.fate);
+    return convertLegacyDebugPacketFateFrameToHidl(legacy_fate.frame_inf, &hidl_fate->frameInfo);
+}
+
+bool convertLegacyVectorOfDebugRxPacketFateToHidl(
+        const std::vector<legacy_hal::wifi_rx_report>& legacy_fates,
+        std::vector<WifiDebugRxPacketFateReport>* hidl_fates) {
+    if (!hidl_fates) {
+        return false;
+    }
+    *hidl_fates = {};
+    for (const auto& legacy_fate : legacy_fates) {
+        WifiDebugRxPacketFateReport hidl_fate;
+        if (!convertLegacyDebugRxPacketFateToHidl(legacy_fate, &hidl_fate)) {
+            return false;
+        }
+        hidl_fates->push_back(hidl_fate);
+    }
+    return true;
+}
+
+bool convertLegacyLinkLayerRadioStatsToHidl(
+        const legacy_hal::LinkLayerRadioStats& legacy_radio_stat,
+        V1_5::StaLinkLayerRadioStats* hidl_radio_stat) {
+    if (!hidl_radio_stat) {
+        return false;
+    }
+    *hidl_radio_stat = {};
+
+    hidl_radio_stat->radioId = legacy_radio_stat.stats.radio;
+    hidl_radio_stat->V1_3.V1_0.onTimeInMs = legacy_radio_stat.stats.on_time;
+    hidl_radio_stat->V1_3.V1_0.txTimeInMs = legacy_radio_stat.stats.tx_time;
+    hidl_radio_stat->V1_3.V1_0.rxTimeInMs = legacy_radio_stat.stats.rx_time;
+    hidl_radio_stat->V1_3.V1_0.onTimeInMsForScan = legacy_radio_stat.stats.on_time_scan;
+    hidl_radio_stat->V1_3.V1_0.txTimeInMsPerLevel = legacy_radio_stat.tx_time_per_levels;
+    hidl_radio_stat->V1_3.onTimeInMsForNanScan = legacy_radio_stat.stats.on_time_nbd;
+    hidl_radio_stat->V1_3.onTimeInMsForBgScan = legacy_radio_stat.stats.on_time_gscan;
+    hidl_radio_stat->V1_3.onTimeInMsForRoamScan = legacy_radio_stat.stats.on_time_roam_scan;
+    hidl_radio_stat->V1_3.onTimeInMsForPnoScan = legacy_radio_stat.stats.on_time_pno_scan;
+    hidl_radio_stat->V1_3.onTimeInMsForHs20Scan = legacy_radio_stat.stats.on_time_hs20;
+
+    std::vector<V1_3::WifiChannelStats> hidl_channel_stats;
+
+    for (const auto& channel_stat : legacy_radio_stat.channel_stats) {
+        V1_3::WifiChannelStats hidl_channel_stat;
+        hidl_channel_stat.onTimeInMs = channel_stat.on_time;
+        hidl_channel_stat.ccaBusyTimeInMs = channel_stat.cca_busy_time;
+        /*
+         * TODO once b/119142899 is fixed,
+         * replace below code with convertLegacyWifiChannelInfoToHidl()
+         */
+        hidl_channel_stat.channel.width = WifiChannelWidthInMhz::WIDTH_20;
+        hidl_channel_stat.channel.centerFreq = channel_stat.channel.center_freq;
+        hidl_channel_stat.channel.centerFreq0 = channel_stat.channel.center_freq0;
+        hidl_channel_stat.channel.centerFreq1 = channel_stat.channel.center_freq1;
+        hidl_channel_stats.push_back(hidl_channel_stat);
+    }
+
+    hidl_radio_stat->V1_3.channelStats = hidl_channel_stats;
+
+    return true;
+}
+
+bool convertLegacyLinkLayerStatsToHidl(const legacy_hal::LinkLayerStats& legacy_stats,
+                                       V1_5::StaLinkLayerStats* hidl_stats) {
+    if (!hidl_stats) {
+        return false;
+    }
+    *hidl_stats = {};
+    // iface legacy_stats conversion.
+    hidl_stats->iface.V1_0.beaconRx = legacy_stats.iface.beacon_rx;
+    hidl_stats->iface.V1_0.avgRssiMgmt = legacy_stats.iface.rssi_mgmt;
+    hidl_stats->iface.V1_0.wmeBePktStats.rxMpdu =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].rx_mpdu;
+    hidl_stats->iface.V1_0.wmeBePktStats.txMpdu =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].tx_mpdu;
+    hidl_stats->iface.V1_0.wmeBePktStats.lostMpdu =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].mpdu_lost;
+    hidl_stats->iface.V1_0.wmeBePktStats.retries =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].retries;
+    hidl_stats->iface.wmeBeContentionTimeStats.contentionTimeMinInUsec =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].contention_time_min;
+    hidl_stats->iface.wmeBeContentionTimeStats.contentionTimeMaxInUsec =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].contention_time_max;
+    hidl_stats->iface.wmeBeContentionTimeStats.contentionTimeAvgInUsec =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].contention_time_avg;
+    hidl_stats->iface.wmeBeContentionTimeStats.contentionNumSamples =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].contention_num_samples;
+    hidl_stats->iface.V1_0.wmeBkPktStats.rxMpdu =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].rx_mpdu;
+    hidl_stats->iface.V1_0.wmeBkPktStats.txMpdu =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].tx_mpdu;
+    hidl_stats->iface.V1_0.wmeBkPktStats.lostMpdu =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].mpdu_lost;
+    hidl_stats->iface.V1_0.wmeBkPktStats.retries =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].retries;
+    hidl_stats->iface.wmeBkContentionTimeStats.contentionTimeMinInUsec =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].contention_time_min;
+    hidl_stats->iface.wmeBkContentionTimeStats.contentionTimeMaxInUsec =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].contention_time_max;
+    hidl_stats->iface.wmeBkContentionTimeStats.contentionTimeAvgInUsec =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].contention_time_avg;
+    hidl_stats->iface.wmeBkContentionTimeStats.contentionNumSamples =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].contention_num_samples;
+    hidl_stats->iface.V1_0.wmeViPktStats.rxMpdu =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].rx_mpdu;
+    hidl_stats->iface.V1_0.wmeViPktStats.txMpdu =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].tx_mpdu;
+    hidl_stats->iface.V1_0.wmeViPktStats.lostMpdu =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].mpdu_lost;
+    hidl_stats->iface.V1_0.wmeViPktStats.retries =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].retries;
+    hidl_stats->iface.wmeViContentionTimeStats.contentionTimeMinInUsec =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].contention_time_min;
+    hidl_stats->iface.wmeViContentionTimeStats.contentionTimeMaxInUsec =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].contention_time_max;
+    hidl_stats->iface.wmeViContentionTimeStats.contentionTimeAvgInUsec =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].contention_time_avg;
+    hidl_stats->iface.wmeViContentionTimeStats.contentionNumSamples =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].contention_num_samples;
+    hidl_stats->iface.V1_0.wmeVoPktStats.rxMpdu =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].rx_mpdu;
+    hidl_stats->iface.V1_0.wmeVoPktStats.txMpdu =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].tx_mpdu;
+    hidl_stats->iface.V1_0.wmeVoPktStats.lostMpdu =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].mpdu_lost;
+    hidl_stats->iface.V1_0.wmeVoPktStats.retries =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].retries;
+    hidl_stats->iface.wmeVoContentionTimeStats.contentionTimeMinInUsec =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].contention_time_min;
+    hidl_stats->iface.wmeVoContentionTimeStats.contentionTimeMaxInUsec =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].contention_time_max;
+    hidl_stats->iface.wmeVoContentionTimeStats.contentionTimeAvgInUsec =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].contention_time_avg;
+    hidl_stats->iface.wmeVoContentionTimeStats.contentionNumSamples =
+            legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].contention_num_samples;
+    hidl_stats->iface.timeSliceDutyCycleInPercent =
+            legacy_stats.iface.info.time_slicing_duty_cycle_percent;
+    // peer info legacy_stats conversion.
+    std::vector<V1_5::StaPeerInfo> hidl_peers_info_stats;
+    for (const auto& legacy_peer_info_stats : legacy_stats.peers) {
+        V1_5::StaPeerInfo hidl_peer_info_stats;
+        if (!convertLegacyPeerInfoStatsToHidl(legacy_peer_info_stats, &hidl_peer_info_stats)) {
+            return false;
+        }
+        hidl_peers_info_stats.push_back(hidl_peer_info_stats);
+    }
+    hidl_stats->iface.peers = hidl_peers_info_stats;
+    // radio legacy_stats conversion.
+    std::vector<V1_5::StaLinkLayerRadioStats> hidl_radios_stats;
+    for (const auto& legacy_radio_stats : legacy_stats.radios) {
+        V1_5::StaLinkLayerRadioStats hidl_radio_stats;
+        if (!convertLegacyLinkLayerRadioStatsToHidl(legacy_radio_stats, &hidl_radio_stats)) {
+            return false;
+        }
+        hidl_radios_stats.push_back(hidl_radio_stats);
+    }
+    hidl_stats->radios = hidl_radios_stats;
+    // Timestamp in the HAL wrapper here since it's not provided in the legacy
+    // HAL API.
+    hidl_stats->timeStampInMs = uptimeMillis();
+    return true;
+}
+
+bool convertLegacyPeerInfoStatsToHidl(const legacy_hal::WifiPeerInfo& legacy_peer_info_stats,
+                                      V1_5::StaPeerInfo* hidl_peer_info_stats) {
+    if (!hidl_peer_info_stats) {
+        return false;
+    }
+    *hidl_peer_info_stats = {};
+    hidl_peer_info_stats->staCount = legacy_peer_info_stats.peer_info.bssload.sta_count;
+    hidl_peer_info_stats->chanUtil = legacy_peer_info_stats.peer_info.bssload.chan_util;
+
+    std::vector<V1_5::StaRateStat> hidlRateStats;
+    for (const auto& legacy_rate_stats : legacy_peer_info_stats.rate_stats) {
+        V1_5::StaRateStat rateStat;
+        if (!convertLegacyWifiRateInfoToHidl(legacy_rate_stats.rate, &rateStat.rateInfo)) {
+            return false;
+        }
+        rateStat.txMpdu = legacy_rate_stats.tx_mpdu;
+        rateStat.rxMpdu = legacy_rate_stats.rx_mpdu;
+        rateStat.mpduLost = legacy_rate_stats.mpdu_lost;
+        rateStat.retries = legacy_rate_stats.retries;
+        hidlRateStats.push_back(rateStat);
+    }
+    hidl_peer_info_stats->rateStats = hidlRateStats;
+    return true;
+}
+
+bool convertLegacyRoamingCapabilitiesToHidl(
+        const legacy_hal::wifi_roaming_capabilities& legacy_caps,
+        StaRoamingCapabilities* hidl_caps) {
+    if (!hidl_caps) {
+        return false;
+    }
+    *hidl_caps = {};
+    hidl_caps->maxBlacklistSize = legacy_caps.max_blacklist_size;
+    hidl_caps->maxWhitelistSize = legacy_caps.max_whitelist_size;
+    return true;
+}
+
+bool convertHidlRoamingConfigToLegacy(const StaRoamingConfig& hidl_config,
+                                      legacy_hal::wifi_roaming_config* legacy_config) {
+    if (!legacy_config) {
+        return false;
+    }
+    *legacy_config = {};
+    if (hidl_config.bssidBlacklist.size() > MAX_BLACKLIST_BSSID ||
+        hidl_config.ssidWhitelist.size() > MAX_WHITELIST_SSID) {
+        return false;
+    }
+    legacy_config->num_blacklist_bssid = hidl_config.bssidBlacklist.size();
+    uint32_t i = 0;
+    for (const auto& bssid : hidl_config.bssidBlacklist) {
+        CHECK(bssid.size() == sizeof(legacy_hal::mac_addr));
+        memcpy(legacy_config->blacklist_bssid[i++], bssid.data(), bssid.size());
+    }
+    legacy_config->num_whitelist_ssid = hidl_config.ssidWhitelist.size();
+    i = 0;
+    for (const auto& ssid : hidl_config.ssidWhitelist) {
+        CHECK(ssid.size() <= sizeof(legacy_hal::ssid_t::ssid_str));
+        legacy_config->whitelist_ssid[i].length = ssid.size();
+        memcpy(legacy_config->whitelist_ssid[i].ssid_str, ssid.data(), ssid.size());
+        i++;
+    }
+    return true;
+}
+
+legacy_hal::fw_roaming_state_t convertHidlRoamingStateToLegacy(StaRoamingState state) {
+    switch (state) {
+        case StaRoamingState::ENABLED:
+            return legacy_hal::ROAMING_ENABLE;
+        case StaRoamingState::DISABLED:
+            return legacy_hal::ROAMING_DISABLE;
+    };
+    CHECK(false);
+}
+
+legacy_hal::NanMatchAlg convertHidlNanMatchAlgToLegacy(NanMatchAlg type) {
+    switch (type) {
+        case NanMatchAlg::MATCH_ONCE:
+            return legacy_hal::NAN_MATCH_ALG_MATCH_ONCE;
+        case NanMatchAlg::MATCH_CONTINUOUS:
+            return legacy_hal::NAN_MATCH_ALG_MATCH_CONTINUOUS;
+        case NanMatchAlg::MATCH_NEVER:
+            return legacy_hal::NAN_MATCH_ALG_MATCH_NEVER;
+    }
+    CHECK(false);
+}
+
+legacy_hal::NanPublishType convertHidlNanPublishTypeToLegacy(NanPublishType type) {
+    switch (type) {
+        case NanPublishType::UNSOLICITED:
+            return legacy_hal::NAN_PUBLISH_TYPE_UNSOLICITED;
+        case NanPublishType::SOLICITED:
+            return legacy_hal::NAN_PUBLISH_TYPE_SOLICITED;
+        case NanPublishType::UNSOLICITED_SOLICITED:
+            return legacy_hal::NAN_PUBLISH_TYPE_UNSOLICITED_SOLICITED;
+    }
+    CHECK(false);
+}
+
+legacy_hal::NanTxType convertHidlNanTxTypeToLegacy(NanTxType type) {
+    switch (type) {
+        case NanTxType::BROADCAST:
+            return legacy_hal::NAN_TX_TYPE_BROADCAST;
+        case NanTxType::UNICAST:
+            return legacy_hal::NAN_TX_TYPE_UNICAST;
+    }
+    CHECK(false);
+}
+
+legacy_hal::NanSubscribeType convertHidlNanSubscribeTypeToLegacy(NanSubscribeType type) {
+    switch (type) {
+        case NanSubscribeType::PASSIVE:
+            return legacy_hal::NAN_SUBSCRIBE_TYPE_PASSIVE;
+        case NanSubscribeType::ACTIVE:
+            return legacy_hal::NAN_SUBSCRIBE_TYPE_ACTIVE;
+    }
+    CHECK(false);
+}
+
+legacy_hal::NanSRFType convertHidlNanSrfTypeToLegacy(NanSrfType type) {
+    switch (type) {
+        case NanSrfType::BLOOM_FILTER:
+            return legacy_hal::NAN_SRF_ATTR_BLOOM_FILTER;
+        case NanSrfType::PARTIAL_MAC_ADDR:
+            return legacy_hal::NAN_SRF_ATTR_PARTIAL_MAC_ADDR;
+    }
+    CHECK(false);
+}
+
+legacy_hal::NanDataPathChannelCfg convertHidlNanDataPathChannelCfgToLegacy(
+        NanDataPathChannelCfg type) {
+    switch (type) {
+        case NanDataPathChannelCfg::CHANNEL_NOT_REQUESTED:
+            return legacy_hal::NAN_DP_CHANNEL_NOT_REQUESTED;
+        case NanDataPathChannelCfg::REQUEST_CHANNEL_SETUP:
+            return legacy_hal::NAN_DP_REQUEST_CHANNEL_SETUP;
+        case NanDataPathChannelCfg::FORCE_CHANNEL_SETUP:
+            return legacy_hal::NAN_DP_FORCE_CHANNEL_SETUP;
+    }
+    CHECK(false);
+}
+
+NanStatusType convertLegacyNanStatusTypeToHidl(legacy_hal::NanStatusType type) {
+    switch (type) {
+        case legacy_hal::NAN_STATUS_SUCCESS:
+            return NanStatusType::SUCCESS;
+        case legacy_hal::NAN_STATUS_INTERNAL_FAILURE:
+            return NanStatusType::INTERNAL_FAILURE;
+        case legacy_hal::NAN_STATUS_PROTOCOL_FAILURE:
+            return NanStatusType::PROTOCOL_FAILURE;
+        case legacy_hal::NAN_STATUS_INVALID_PUBLISH_SUBSCRIBE_ID:
+            return NanStatusType::INVALID_SESSION_ID;
+        case legacy_hal::NAN_STATUS_NO_RESOURCE_AVAILABLE:
+            return NanStatusType::NO_RESOURCES_AVAILABLE;
+        case legacy_hal::NAN_STATUS_INVALID_PARAM:
+            return NanStatusType::INVALID_ARGS;
+        case legacy_hal::NAN_STATUS_INVALID_REQUESTOR_INSTANCE_ID:
+            return NanStatusType::INVALID_PEER_ID;
+        case legacy_hal::NAN_STATUS_INVALID_NDP_ID:
+            return NanStatusType::INVALID_NDP_ID;
+        case legacy_hal::NAN_STATUS_NAN_NOT_ALLOWED:
+            return NanStatusType::NAN_NOT_ALLOWED;
+        case legacy_hal::NAN_STATUS_NO_OTA_ACK:
+            return NanStatusType::NO_OTA_ACK;
+        case legacy_hal::NAN_STATUS_ALREADY_ENABLED:
+            return NanStatusType::ALREADY_ENABLED;
+        case legacy_hal::NAN_STATUS_FOLLOWUP_QUEUE_FULL:
+            return NanStatusType::FOLLOWUP_TX_QUEUE_FULL;
+        case legacy_hal::NAN_STATUS_UNSUPPORTED_CONCURRENCY_NAN_DISABLED:
+            return NanStatusType::UNSUPPORTED_CONCURRENCY_NAN_DISABLED;
+    }
+    CHECK(false);
+}
+
+void convertToWifiNanStatus(legacy_hal::NanStatusType type, const char* str, size_t max_len,
+                            WifiNanStatus* wifiNanStatus) {
+    wifiNanStatus->status = convertLegacyNanStatusTypeToHidl(type);
+    wifiNanStatus->description = safeConvertChar(str, max_len);
+}
+
+bool convertHidlNanEnableRequestToLegacy(const V1_4::NanEnableRequest& hidl_request,
+                                         legacy_hal::NanEnableRequest* legacy_request) {
+    if (!legacy_request) {
+        LOG(ERROR) << "convertHidlNanEnableRequestToLegacy: null legacy_request";
+        return false;
+    }
+    *legacy_request = {};
+
+    legacy_request->config_2dot4g_support = 1;
+    legacy_request->support_2dot4g_val =
+            hidl_request.operateInBand[(size_t)NanBandIndex::NAN_BAND_24GHZ];
+    legacy_request->config_support_5g = 1;
+    legacy_request->support_5g_val =
+            hidl_request.operateInBand[(size_t)NanBandIndex::NAN_BAND_5GHZ];
+    legacy_request->config_hop_count_limit = 1;
+    legacy_request->hop_count_limit_val = hidl_request.hopCountMax;
+    legacy_request->master_pref = hidl_request.configParams.masterPref;
+    legacy_request->discovery_indication_cfg = 0;
+    legacy_request->discovery_indication_cfg |=
+            hidl_request.configParams.disableDiscoveryAddressChangeIndication ? 0x1 : 0x0;
+    legacy_request->discovery_indication_cfg |=
+            hidl_request.configParams.disableStartedClusterIndication ? 0x2 : 0x0;
+    legacy_request->discovery_indication_cfg |=
+            hidl_request.configParams.disableJoinedClusterIndication ? 0x4 : 0x0;
+    legacy_request->config_sid_beacon = 1;
+    if (hidl_request.configParams.numberOfPublishServiceIdsInBeacon > 127) {
+        LOG(ERROR) << "convertHidlNanEnableRequestToLegacy: "
+                      "numberOfPublishServiceIdsInBeacon > 127";
+        return false;
+    }
+    legacy_request->sid_beacon_val =
+            (hidl_request.configParams.includePublishServiceIdsInBeacon ? 0x1 : 0x0) |
+            (hidl_request.configParams.numberOfPublishServiceIdsInBeacon << 1);
+    legacy_request->config_subscribe_sid_beacon = 1;
+    if (hidl_request.configParams.numberOfSubscribeServiceIdsInBeacon > 127) {
+        LOG(ERROR) << "convertHidlNanEnableRequestToLegacy: "
+                      "numberOfSubscribeServiceIdsInBeacon > 127";
+        return false;
+    }
+    legacy_request->subscribe_sid_beacon_val =
+            (hidl_request.configParams.includeSubscribeServiceIdsInBeacon ? 0x1 : 0x0) |
+            (hidl_request.configParams.numberOfSubscribeServiceIdsInBeacon << 1);
+    legacy_request->config_rssi_window_size = 1;
+    legacy_request->rssi_window_size_val = hidl_request.configParams.rssiWindowSize;
+    legacy_request->config_disc_mac_addr_randomization = 1;
+    legacy_request->disc_mac_addr_rand_interval_sec =
+            hidl_request.configParams.macAddressRandomizationIntervalSec;
+    legacy_request->config_2dot4g_rssi_close = 1;
+    if (hidl_request.configParams.bandSpecificConfig.size() != 3) {
+        LOG(ERROR) << "convertHidlNanEnableRequestToLegacy: "
+                      "bandSpecificConfig.size() != 3";
+        return false;
+    }
+    legacy_request->rssi_close_2dot4g_val =
+            hidl_request.configParams.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
+                    .rssiClose;
+    legacy_request->config_2dot4g_rssi_middle = 1;
+    legacy_request->rssi_middle_2dot4g_val =
+            hidl_request.configParams.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
+                    .rssiMiddle;
+    legacy_request->config_2dot4g_rssi_proximity = 1;
+    legacy_request->rssi_proximity_2dot4g_val =
+            hidl_request.configParams.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
+                    .rssiCloseProximity;
+    legacy_request->config_scan_params = 1;
+    legacy_request->scan_params_val.dwell_time[legacy_hal::NAN_CHANNEL_24G_BAND] =
+            hidl_request.configParams.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
+                    .dwellTimeMs;
+    legacy_request->scan_params_val.scan_period[legacy_hal::NAN_CHANNEL_24G_BAND] =
+            hidl_request.configParams.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
+                    .scanPeriodSec;
+    legacy_request->config_dw.config_2dot4g_dw_band =
+            hidl_request.configParams.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
+                    .validDiscoveryWindowIntervalVal;
+    legacy_request->config_dw.dw_2dot4g_interval_val =
+            hidl_request.configParams.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
+                    .discoveryWindowIntervalVal;
+    legacy_request->config_5g_rssi_close = 1;
+    legacy_request->rssi_close_5g_val =
+            hidl_request.configParams.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
+                    .rssiClose;
+    legacy_request->config_5g_rssi_middle = 1;
+    legacy_request->rssi_middle_5g_val =
+            hidl_request.configParams.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
+                    .rssiMiddle;
+    legacy_request->config_5g_rssi_close_proximity = 1;
+    legacy_request->rssi_close_proximity_5g_val =
+            hidl_request.configParams.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
+                    .rssiCloseProximity;
+    legacy_request->scan_params_val.dwell_time[legacy_hal::NAN_CHANNEL_5G_BAND_LOW] =
+            hidl_request.configParams.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
+                    .dwellTimeMs;
+    legacy_request->scan_params_val.scan_period[legacy_hal::NAN_CHANNEL_5G_BAND_LOW] =
+            hidl_request.configParams.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
+                    .scanPeriodSec;
+    legacy_request->scan_params_val.dwell_time[legacy_hal::NAN_CHANNEL_5G_BAND_HIGH] =
+            hidl_request.configParams.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
+                    .dwellTimeMs;
+    legacy_request->scan_params_val.scan_period[legacy_hal::NAN_CHANNEL_5G_BAND_HIGH] =
+            hidl_request.configParams.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
+                    .scanPeriodSec;
+    legacy_request->config_dw.config_5g_dw_band =
+            hidl_request.configParams.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
+                    .validDiscoveryWindowIntervalVal;
+    legacy_request->config_dw.dw_5g_interval_val =
+            hidl_request.configParams.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
+                    .discoveryWindowIntervalVal;
+    if (hidl_request.debugConfigs.validClusterIdVals) {
+        legacy_request->cluster_low = hidl_request.debugConfigs.clusterIdBottomRangeVal;
+        legacy_request->cluster_high = hidl_request.debugConfigs.clusterIdTopRangeVal;
+    } else {  // need 'else' since not configurable in legacy HAL
+        legacy_request->cluster_low = 0x0000;
+        legacy_request->cluster_high = 0xFFFF;
+    }
+    legacy_request->config_intf_addr = hidl_request.debugConfigs.validIntfAddrVal;
+    memcpy(legacy_request->intf_addr_val, hidl_request.debugConfigs.intfAddrVal.data(), 6);
+    legacy_request->config_oui = hidl_request.debugConfigs.validOuiVal;
+    legacy_request->oui_val = hidl_request.debugConfigs.ouiVal;
+    legacy_request->config_random_factor_force =
+            hidl_request.debugConfigs.validRandomFactorForceVal;
+    legacy_request->random_factor_force_val = hidl_request.debugConfigs.randomFactorForceVal;
+    legacy_request->config_hop_count_force = hidl_request.debugConfigs.validHopCountForceVal;
+    legacy_request->hop_count_force_val = hidl_request.debugConfigs.hopCountForceVal;
+    legacy_request->config_24g_channel = hidl_request.debugConfigs.validDiscoveryChannelVal;
+    legacy_request->channel_24g_val =
+            hidl_request.debugConfigs.discoveryChannelMhzVal[(size_t)NanBandIndex::NAN_BAND_24GHZ];
+    legacy_request->config_5g_channel = hidl_request.debugConfigs.validDiscoveryChannelVal;
+    legacy_request->channel_5g_val =
+            hidl_request.debugConfigs.discoveryChannelMhzVal[(size_t)NanBandIndex::NAN_BAND_5GHZ];
+    legacy_request->config_2dot4g_beacons = hidl_request.debugConfigs.validUseBeaconsInBandVal;
+    legacy_request->beacon_2dot4g_val =
+            hidl_request.debugConfigs.useBeaconsInBandVal[(size_t)NanBandIndex::NAN_BAND_24GHZ];
+    legacy_request->config_5g_beacons = hidl_request.debugConfigs.validUseBeaconsInBandVal;
+    legacy_request->beacon_5g_val =
+            hidl_request.debugConfigs.useBeaconsInBandVal[(size_t)NanBandIndex::NAN_BAND_5GHZ];
+    legacy_request->config_2dot4g_sdf = hidl_request.debugConfigs.validUseSdfInBandVal;
+    legacy_request->sdf_2dot4g_val =
+            hidl_request.debugConfigs.useSdfInBandVal[(size_t)NanBandIndex::NAN_BAND_24GHZ];
+    legacy_request->config_5g_sdf = hidl_request.debugConfigs.validUseSdfInBandVal;
+    legacy_request->sdf_5g_val =
+            hidl_request.debugConfigs.useSdfInBandVal[(size_t)NanBandIndex::NAN_BAND_5GHZ];
+
+    /* TODO: b/145609058
+     * Missing updates needed to legacy_hal::NanEnableRequest and conversion to
+     * it for 6GHz band */
+
+    return true;
+}
+
+bool convertHidlNanEnableRequest_1_4ToLegacy(const V1_4::NanEnableRequest& hidl_request1,
+                                             const NanConfigRequestSupplemental& hidl_request2,
+                                             legacy_hal::NanEnableRequest* legacy_request) {
+    if (!legacy_request) {
+        LOG(ERROR) << "convertHidlNanEnableRequest_1_4ToLegacy: null legacy_request";
+        return false;
+    }
+
+    *legacy_request = {};
+    if (!convertHidlNanEnableRequestToLegacy(hidl_request1, legacy_request)) {
+        return false;
+    }
+
+    legacy_request->config_discovery_beacon_int = 1;
+    legacy_request->discovery_beacon_interval = hidl_request2.V1_2.discoveryBeaconIntervalMs;
+    legacy_request->config_nss = 1;
+    legacy_request->nss = hidl_request2.V1_2.numberOfSpatialStreamsInDiscovery;
+    legacy_request->config_dw_early_termination = 1;
+    legacy_request->enable_dw_termination =
+            hidl_request2.V1_2.enableDiscoveryWindowEarlyTermination;
+    legacy_request->config_enable_ranging = 1;
+    legacy_request->enable_ranging = hidl_request2.V1_2.enableRanging;
+
+    return true;
+}
+
+bool convertHidlNanEnableRequest_1_5ToLegacy(const V1_4::NanEnableRequest& hidl_request1,
+                                             const NanConfigRequestSupplemental& hidl_request2,
+                                             legacy_hal::NanEnableRequest* legacy_request) {
+    if (!legacy_request) {
+        LOG(ERROR) << "convertHidlNanEnableRequest_1_5ToLegacy: null legacy_request";
+        return false;
+    }
+
+    *legacy_request = {};
+    if (!convertHidlNanEnableRequest_1_4ToLegacy(hidl_request1, hidl_request2, legacy_request)) {
+        return false;
+    }
+
+    legacy_request->config_enable_instant_mode = 1;
+    legacy_request->enable_instant_mode = hidl_request2.enableInstantCommunicationMode;
+
+    return true;
+}
+
+bool convertHidlNanConfigRequest_1_5ToLegacy(const V1_4::NanConfigRequest& hidl_request1,
+                                             const NanConfigRequestSupplemental& hidl_request2,
+                                             legacy_hal::NanConfigRequest* legacy_request) {
+    if (!legacy_request) {
+        LOG(ERROR) << "convertHidlNanConfigRequest_1_5ToLegacy: null legacy_request";
+        return false;
+    }
+
+    *legacy_request = {};
+    if (!convertHidlNanConfigRequest_1_4ToLegacy(hidl_request1, hidl_request2, legacy_request)) {
+        return false;
+    }
+
+    legacy_request->config_enable_instant_mode = 1;
+    legacy_request->enable_instant_mode = hidl_request2.enableInstantCommunicationMode;
+
+    return true;
+}
+
+bool convertHidlNanPublishRequestToLegacy(const NanPublishRequest& hidl_request,
+                                          legacy_hal::NanPublishRequest* legacy_request) {
+    if (!legacy_request) {
+        LOG(ERROR) << "convertHidlNanPublishRequestToLegacy: null legacy_request";
+        return false;
+    }
+    *legacy_request = {};
+
+    legacy_request->publish_id = hidl_request.baseConfigs.sessionId;
+    legacy_request->ttl = hidl_request.baseConfigs.ttlSec;
+    legacy_request->period = hidl_request.baseConfigs.discoveryWindowPeriod;
+    legacy_request->publish_count = hidl_request.baseConfigs.discoveryCount;
+    legacy_request->service_name_len = hidl_request.baseConfigs.serviceName.size();
+    if (legacy_request->service_name_len > NAN_MAX_SERVICE_NAME_LEN) {
+        LOG(ERROR) << "convertHidlNanPublishRequestToLegacy: service_name_len "
+                      "too large";
+        return false;
+    }
+    memcpy(legacy_request->service_name, hidl_request.baseConfigs.serviceName.data(),
+           legacy_request->service_name_len);
+    legacy_request->publish_match_indicator =
+            convertHidlNanMatchAlgToLegacy(hidl_request.baseConfigs.discoveryMatchIndicator);
+    legacy_request->service_specific_info_len = hidl_request.baseConfigs.serviceSpecificInfo.size();
+    if (legacy_request->service_specific_info_len > NAN_MAX_SERVICE_SPECIFIC_INFO_LEN) {
+        LOG(ERROR) << "convertHidlNanPublishRequestToLegacy: "
+                      "service_specific_info_len too large";
+        return false;
+    }
+    memcpy(legacy_request->service_specific_info,
+           hidl_request.baseConfigs.serviceSpecificInfo.data(),
+           legacy_request->service_specific_info_len);
+    legacy_request->sdea_service_specific_info_len =
+            hidl_request.baseConfigs.extendedServiceSpecificInfo.size();
+    if (legacy_request->sdea_service_specific_info_len > NAN_MAX_SDEA_SERVICE_SPECIFIC_INFO_LEN) {
+        LOG(ERROR) << "convertHidlNanPublishRequestToLegacy: "
+                      "sdea_service_specific_info_len too large";
+        return false;
+    }
+    memcpy(legacy_request->sdea_service_specific_info,
+           hidl_request.baseConfigs.extendedServiceSpecificInfo.data(),
+           legacy_request->sdea_service_specific_info_len);
+    legacy_request->rx_match_filter_len = hidl_request.baseConfigs.rxMatchFilter.size();
+    if (legacy_request->rx_match_filter_len > NAN_MAX_MATCH_FILTER_LEN) {
+        LOG(ERROR) << "convertHidlNanPublishRequestToLegacy: "
+                      "rx_match_filter_len too large";
+        return false;
+    }
+    memcpy(legacy_request->rx_match_filter, hidl_request.baseConfigs.rxMatchFilter.data(),
+           legacy_request->rx_match_filter_len);
+    legacy_request->tx_match_filter_len = hidl_request.baseConfigs.txMatchFilter.size();
+    if (legacy_request->tx_match_filter_len > NAN_MAX_MATCH_FILTER_LEN) {
+        LOG(ERROR) << "convertHidlNanPublishRequestToLegacy: "
+                      "tx_match_filter_len too large";
+        return false;
+    }
+    memcpy(legacy_request->tx_match_filter, hidl_request.baseConfigs.txMatchFilter.data(),
+           legacy_request->tx_match_filter_len);
+    legacy_request->rssi_threshold_flag = hidl_request.baseConfigs.useRssiThreshold;
+    legacy_request->recv_indication_cfg = 0;
+    legacy_request->recv_indication_cfg |=
+            hidl_request.baseConfigs.disableDiscoveryTerminationIndication ? 0x1 : 0x0;
+    legacy_request->recv_indication_cfg |=
+            hidl_request.baseConfigs.disableMatchExpirationIndication ? 0x2 : 0x0;
+    legacy_request->recv_indication_cfg |=
+            hidl_request.baseConfigs.disableFollowupReceivedIndication ? 0x4 : 0x0;
+    legacy_request->recv_indication_cfg |= 0x8;
+    legacy_request->cipher_type = (unsigned int)hidl_request.baseConfigs.securityConfig.cipherType;
+    if (hidl_request.baseConfigs.securityConfig.securityType == NanDataPathSecurityType::PMK) {
+        legacy_request->key_info.key_type = legacy_hal::NAN_SECURITY_KEY_INPUT_PMK;
+        legacy_request->key_info.body.pmk_info.pmk_len =
+                hidl_request.baseConfigs.securityConfig.pmk.size();
+        if (legacy_request->key_info.body.pmk_info.pmk_len != NAN_PMK_INFO_LEN) {
+            LOG(ERROR) << "convertHidlNanPublishRequestToLegacy: invalid pmk_len";
+            return false;
+        }
+        memcpy(legacy_request->key_info.body.pmk_info.pmk,
+               hidl_request.baseConfigs.securityConfig.pmk.data(),
+               legacy_request->key_info.body.pmk_info.pmk_len);
+    }
+    if (hidl_request.baseConfigs.securityConfig.securityType ==
+        NanDataPathSecurityType::PASSPHRASE) {
+        legacy_request->key_info.key_type = legacy_hal::NAN_SECURITY_KEY_INPUT_PASSPHRASE;
+        legacy_request->key_info.body.passphrase_info.passphrase_len =
+                hidl_request.baseConfigs.securityConfig.passphrase.size();
+        if (legacy_request->key_info.body.passphrase_info.passphrase_len <
+            NAN_SECURITY_MIN_PASSPHRASE_LEN) {
+            LOG(ERROR) << "convertHidlNanPublishRequestToLegacy: "
+                          "passphrase_len too small";
+            return false;
+        }
+        if (legacy_request->key_info.body.passphrase_info.passphrase_len >
+            NAN_SECURITY_MAX_PASSPHRASE_LEN) {
+            LOG(ERROR) << "convertHidlNanPublishRequestToLegacy: "
+                          "passphrase_len too large";
+            return false;
+        }
+        memcpy(legacy_request->key_info.body.passphrase_info.passphrase,
+               hidl_request.baseConfigs.securityConfig.passphrase.data(),
+               legacy_request->key_info.body.passphrase_info.passphrase_len);
+    }
+    legacy_request->sdea_params.security_cfg =
+            (hidl_request.baseConfigs.securityConfig.securityType != NanDataPathSecurityType::OPEN)
+                    ? legacy_hal::NAN_DP_CONFIG_SECURITY
+                    : legacy_hal::NAN_DP_CONFIG_NO_SECURITY;
+    legacy_request->sdea_params.ranging_state = hidl_request.baseConfigs.rangingRequired
+                                                        ? legacy_hal::NAN_RANGING_ENABLE
+                                                        : legacy_hal::NAN_RANGING_DISABLE;
+    legacy_request->ranging_cfg.ranging_interval_msec =
+            hidl_request.baseConfigs.rangingIntervalMsec;
+    legacy_request->ranging_cfg.config_ranging_indications =
+            hidl_request.baseConfigs.configRangingIndications;
+    legacy_request->ranging_cfg.distance_ingress_mm =
+            hidl_request.baseConfigs.distanceIngressCm * 10;
+    legacy_request->ranging_cfg.distance_egress_mm = hidl_request.baseConfigs.distanceEgressCm * 10;
+    legacy_request->ranging_auto_response = hidl_request.baseConfigs.rangingRequired
+                                                    ? legacy_hal::NAN_RANGING_AUTO_RESPONSE_ENABLE
+                                                    : legacy_hal::NAN_RANGING_AUTO_RESPONSE_DISABLE;
+    legacy_request->sdea_params.range_report = legacy_hal::NAN_DISABLE_RANGE_REPORT;
+    legacy_request->publish_type = convertHidlNanPublishTypeToLegacy(hidl_request.publishType);
+    legacy_request->tx_type = convertHidlNanTxTypeToLegacy(hidl_request.txType);
+    legacy_request->service_responder_policy = hidl_request.autoAcceptDataPathRequests
+                                                       ? legacy_hal::NAN_SERVICE_ACCEPT_POLICY_ALL
+                                                       : legacy_hal::NAN_SERVICE_ACCEPT_POLICY_NONE;
+
+    return true;
+}
+
+bool convertHidlNanSubscribeRequestToLegacy(const NanSubscribeRequest& hidl_request,
+                                            legacy_hal::NanSubscribeRequest* legacy_request) {
+    if (!legacy_request) {
+        LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: legacy_request is null";
+        return false;
+    }
+    *legacy_request = {};
+
+    legacy_request->subscribe_id = hidl_request.baseConfigs.sessionId;
+    legacy_request->ttl = hidl_request.baseConfigs.ttlSec;
+    legacy_request->period = hidl_request.baseConfigs.discoveryWindowPeriod;
+    legacy_request->subscribe_count = hidl_request.baseConfigs.discoveryCount;
+    legacy_request->service_name_len = hidl_request.baseConfigs.serviceName.size();
+    if (legacy_request->service_name_len > NAN_MAX_SERVICE_NAME_LEN) {
+        LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
+                      "service_name_len too large";
+        return false;
+    }
+    memcpy(legacy_request->service_name, hidl_request.baseConfigs.serviceName.data(),
+           legacy_request->service_name_len);
+    legacy_request->subscribe_match_indicator =
+            convertHidlNanMatchAlgToLegacy(hidl_request.baseConfigs.discoveryMatchIndicator);
+    legacy_request->service_specific_info_len = hidl_request.baseConfigs.serviceSpecificInfo.size();
+    if (legacy_request->service_specific_info_len > NAN_MAX_SERVICE_SPECIFIC_INFO_LEN) {
+        LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
+                      "service_specific_info_len too large";
+        return false;
+    }
+    memcpy(legacy_request->service_specific_info,
+           hidl_request.baseConfigs.serviceSpecificInfo.data(),
+           legacy_request->service_specific_info_len);
+    legacy_request->sdea_service_specific_info_len =
+            hidl_request.baseConfigs.extendedServiceSpecificInfo.size();
+    if (legacy_request->sdea_service_specific_info_len > NAN_MAX_SDEA_SERVICE_SPECIFIC_INFO_LEN) {
+        LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
+                      "sdea_service_specific_info_len too large";
+        return false;
+    }
+    memcpy(legacy_request->sdea_service_specific_info,
+           hidl_request.baseConfigs.extendedServiceSpecificInfo.data(),
+           legacy_request->sdea_service_specific_info_len);
+    legacy_request->rx_match_filter_len = hidl_request.baseConfigs.rxMatchFilter.size();
+    if (legacy_request->rx_match_filter_len > NAN_MAX_MATCH_FILTER_LEN) {
+        LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
+                      "rx_match_filter_len too large";
+        return false;
+    }
+    memcpy(legacy_request->rx_match_filter, hidl_request.baseConfigs.rxMatchFilter.data(),
+           legacy_request->rx_match_filter_len);
+    legacy_request->tx_match_filter_len = hidl_request.baseConfigs.txMatchFilter.size();
+    if (legacy_request->tx_match_filter_len > NAN_MAX_MATCH_FILTER_LEN) {
+        LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
+                      "tx_match_filter_len too large";
+        return false;
+    }
+    memcpy(legacy_request->tx_match_filter, hidl_request.baseConfigs.txMatchFilter.data(),
+           legacy_request->tx_match_filter_len);
+    legacy_request->rssi_threshold_flag = hidl_request.baseConfigs.useRssiThreshold;
+    legacy_request->recv_indication_cfg = 0;
+    legacy_request->recv_indication_cfg |=
+            hidl_request.baseConfigs.disableDiscoveryTerminationIndication ? 0x1 : 0x0;
+    legacy_request->recv_indication_cfg |=
+            hidl_request.baseConfigs.disableMatchExpirationIndication ? 0x2 : 0x0;
+    legacy_request->recv_indication_cfg |=
+            hidl_request.baseConfigs.disableFollowupReceivedIndication ? 0x4 : 0x0;
+    legacy_request->cipher_type = (unsigned int)hidl_request.baseConfigs.securityConfig.cipherType;
+    if (hidl_request.baseConfigs.securityConfig.securityType == NanDataPathSecurityType::PMK) {
+        legacy_request->key_info.key_type = legacy_hal::NAN_SECURITY_KEY_INPUT_PMK;
+        legacy_request->key_info.body.pmk_info.pmk_len =
+                hidl_request.baseConfigs.securityConfig.pmk.size();
+        if (legacy_request->key_info.body.pmk_info.pmk_len != NAN_PMK_INFO_LEN) {
+            LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: invalid pmk_len";
+            return false;
+        }
+        memcpy(legacy_request->key_info.body.pmk_info.pmk,
+               hidl_request.baseConfigs.securityConfig.pmk.data(),
+               legacy_request->key_info.body.pmk_info.pmk_len);
+    }
+    if (hidl_request.baseConfigs.securityConfig.securityType ==
+        NanDataPathSecurityType::PASSPHRASE) {
+        legacy_request->key_info.key_type = legacy_hal::NAN_SECURITY_KEY_INPUT_PASSPHRASE;
+        legacy_request->key_info.body.passphrase_info.passphrase_len =
+                hidl_request.baseConfigs.securityConfig.passphrase.size();
+        if (legacy_request->key_info.body.passphrase_info.passphrase_len <
+            NAN_SECURITY_MIN_PASSPHRASE_LEN) {
+            LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
+                          "passphrase_len too small";
+            return false;
+        }
+        if (legacy_request->key_info.body.passphrase_info.passphrase_len >
+            NAN_SECURITY_MAX_PASSPHRASE_LEN) {
+            LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
+                          "passphrase_len too large";
+            return false;
+        }
+        memcpy(legacy_request->key_info.body.passphrase_info.passphrase,
+               hidl_request.baseConfigs.securityConfig.passphrase.data(),
+               legacy_request->key_info.body.passphrase_info.passphrase_len);
+    }
+    legacy_request->sdea_params.security_cfg =
+            (hidl_request.baseConfigs.securityConfig.securityType != NanDataPathSecurityType::OPEN)
+                    ? legacy_hal::NAN_DP_CONFIG_SECURITY
+                    : legacy_hal::NAN_DP_CONFIG_NO_SECURITY;
+    legacy_request->sdea_params.ranging_state = hidl_request.baseConfigs.rangingRequired
+                                                        ? legacy_hal::NAN_RANGING_ENABLE
+                                                        : legacy_hal::NAN_RANGING_DISABLE;
+    legacy_request->ranging_cfg.ranging_interval_msec =
+            hidl_request.baseConfigs.rangingIntervalMsec;
+    legacy_request->ranging_cfg.config_ranging_indications =
+            hidl_request.baseConfigs.configRangingIndications;
+    legacy_request->ranging_cfg.distance_ingress_mm =
+            hidl_request.baseConfigs.distanceIngressCm * 10;
+    legacy_request->ranging_cfg.distance_egress_mm = hidl_request.baseConfigs.distanceEgressCm * 10;
+    legacy_request->ranging_auto_response = hidl_request.baseConfigs.rangingRequired
+                                                    ? legacy_hal::NAN_RANGING_AUTO_RESPONSE_ENABLE
+                                                    : legacy_hal::NAN_RANGING_AUTO_RESPONSE_DISABLE;
+    legacy_request->sdea_params.range_report = legacy_hal::NAN_DISABLE_RANGE_REPORT;
+    legacy_request->subscribe_type =
+            convertHidlNanSubscribeTypeToLegacy(hidl_request.subscribeType);
+    legacy_request->serviceResponseFilter = convertHidlNanSrfTypeToLegacy(hidl_request.srfType);
+    legacy_request->serviceResponseInclude = hidl_request.srfRespondIfInAddressSet
+                                                     ? legacy_hal::NAN_SRF_INCLUDE_RESPOND
+                                                     : legacy_hal::NAN_SRF_INCLUDE_DO_NOT_RESPOND;
+    legacy_request->useServiceResponseFilter =
+            hidl_request.shouldUseSrf ? legacy_hal::NAN_USE_SRF : legacy_hal::NAN_DO_NOT_USE_SRF;
+    legacy_request->ssiRequiredForMatchIndication =
+            hidl_request.isSsiRequiredForMatch ? legacy_hal::NAN_SSI_REQUIRED_IN_MATCH_IND
+                                               : legacy_hal::NAN_SSI_NOT_REQUIRED_IN_MATCH_IND;
+    legacy_request->num_intf_addr_present = hidl_request.intfAddr.size();
+    if (legacy_request->num_intf_addr_present > NAN_MAX_SUBSCRIBE_MAX_ADDRESS) {
+        LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
+                      "num_intf_addr_present - too many";
+        return false;
+    }
+    for (int i = 0; i < legacy_request->num_intf_addr_present; i++) {
+        memcpy(legacy_request->intf_addr[i], hidl_request.intfAddr[i].data(), 6);
+    }
+
+    return true;
+}
+
+bool convertHidlNanTransmitFollowupRequestToLegacy(
+        const NanTransmitFollowupRequest& hidl_request,
+        legacy_hal::NanTransmitFollowupRequest* legacy_request) {
+    if (!legacy_request) {
+        LOG(ERROR) << "convertHidlNanTransmitFollowupRequestToLegacy: "
+                      "legacy_request is null";
+        return false;
+    }
+    *legacy_request = {};
+
+    legacy_request->publish_subscribe_id = hidl_request.discoverySessionId;
+    legacy_request->requestor_instance_id = hidl_request.peerId;
+    memcpy(legacy_request->addr, hidl_request.addr.data(), 6);
+    legacy_request->priority = hidl_request.isHighPriority ? legacy_hal::NAN_TX_PRIORITY_HIGH
+                                                           : legacy_hal::NAN_TX_PRIORITY_NORMAL;
+    legacy_request->dw_or_faw = hidl_request.shouldUseDiscoveryWindow
+                                        ? legacy_hal::NAN_TRANSMIT_IN_DW
+                                        : legacy_hal::NAN_TRANSMIT_IN_FAW;
+    legacy_request->service_specific_info_len = hidl_request.serviceSpecificInfo.size();
+    if (legacy_request->service_specific_info_len > NAN_MAX_SERVICE_SPECIFIC_INFO_LEN) {
+        LOG(ERROR) << "convertHidlNanTransmitFollowupRequestToLegacy: "
+                      "service_specific_info_len too large";
+        return false;
+    }
+    memcpy(legacy_request->service_specific_info, hidl_request.serviceSpecificInfo.data(),
+           legacy_request->service_specific_info_len);
+    legacy_request->sdea_service_specific_info_len =
+            hidl_request.extendedServiceSpecificInfo.size();
+    if (legacy_request->sdea_service_specific_info_len > NAN_MAX_SDEA_SERVICE_SPECIFIC_INFO_LEN) {
+        LOG(ERROR) << "convertHidlNanTransmitFollowupRequestToLegacy: "
+                      "sdea_service_specific_info_len too large";
+        return false;
+    }
+    memcpy(legacy_request->sdea_service_specific_info,
+           hidl_request.extendedServiceSpecificInfo.data(),
+           legacy_request->sdea_service_specific_info_len);
+    legacy_request->recv_indication_cfg = hidl_request.disableFollowupResultIndication ? 0x1 : 0x0;
+
+    return true;
+}
+
+bool convertHidlNanConfigRequestToLegacy(const V1_4::NanConfigRequest& hidl_request,
+                                         legacy_hal::NanConfigRequest* legacy_request) {
+    if (!legacy_request) {
+        LOG(ERROR) << "convertHidlNanConfigRequestToLegacy: legacy_request is null";
+        return false;
+    }
+    *legacy_request = {};
+
+    // TODO: b/34059183 tracks missing configurations in legacy HAL or uknown
+    // defaults
+    legacy_request->master_pref = hidl_request.masterPref;
+    legacy_request->discovery_indication_cfg = 0;
+    legacy_request->discovery_indication_cfg |=
+            hidl_request.disableDiscoveryAddressChangeIndication ? 0x1 : 0x0;
+    legacy_request->discovery_indication_cfg |=
+            hidl_request.disableStartedClusterIndication ? 0x2 : 0x0;
+    legacy_request->discovery_indication_cfg |=
+            hidl_request.disableJoinedClusterIndication ? 0x4 : 0x0;
+    legacy_request->config_sid_beacon = 1;
+    if (hidl_request.numberOfPublishServiceIdsInBeacon > 127) {
+        LOG(ERROR) << "convertHidlNanConfigRequestToLegacy: "
+                      "numberOfPublishServiceIdsInBeacon > 127";
+        return false;
+    }
+    legacy_request->sid_beacon = (hidl_request.includePublishServiceIdsInBeacon ? 0x1 : 0x0) |
+                                 (hidl_request.numberOfPublishServiceIdsInBeacon << 1);
+    legacy_request->config_subscribe_sid_beacon = 1;
+    if (hidl_request.numberOfSubscribeServiceIdsInBeacon > 127) {
+        LOG(ERROR) << "convertHidlNanConfigRequestToLegacy: "
+                      "numberOfSubscribeServiceIdsInBeacon > 127";
+        return false;
+    }
+    legacy_request->subscribe_sid_beacon_val =
+            (hidl_request.includeSubscribeServiceIdsInBeacon ? 0x1 : 0x0) |
+            (hidl_request.numberOfSubscribeServiceIdsInBeacon << 1);
+    legacy_request->config_rssi_window_size = 1;
+    legacy_request->rssi_window_size_val = hidl_request.rssiWindowSize;
+    legacy_request->config_disc_mac_addr_randomization = 1;
+    legacy_request->disc_mac_addr_rand_interval_sec =
+            hidl_request.macAddressRandomizationIntervalSec;
+    /* TODO : missing
+    legacy_request->config_2dot4g_rssi_close = 1;
+    legacy_request->rssi_close_2dot4g_val =
+          hidl_request.bandSpecificConfig[
+              (size_t) NanBandIndex::NAN_BAND_24GHZ].rssiClose;
+    legacy_request->config_2dot4g_rssi_middle = 1;
+    legacy_request->rssi_middle_2dot4g_val =
+          hidl_request.bandSpecificConfig[
+              (size_t) NanBandIndex::NAN_BAND_24GHZ].rssiMiddle;
+    legacy_request->config_2dot4g_rssi_proximity = 1;
+    legacy_request->rssi_proximity_2dot4g_val =
+          hidl_request.bandSpecificConfig[
+              (size_t) NanBandIndex::NAN_BAND_24GHZ].rssiCloseProximity;
+    */
+    legacy_request->config_scan_params = 1;
+    legacy_request->scan_params_val.dwell_time[legacy_hal::NAN_CHANNEL_24G_BAND] =
+            hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ].dwellTimeMs;
+    legacy_request->scan_params_val.scan_period[legacy_hal::NAN_CHANNEL_24G_BAND] =
+            hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ].scanPeriodSec;
+    legacy_request->config_dw.config_2dot4g_dw_band =
+            hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
+                    .validDiscoveryWindowIntervalVal;
+    legacy_request->config_dw.dw_2dot4g_interval_val =
+            hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
+                    .discoveryWindowIntervalVal;
+    /* TODO: missing
+    legacy_request->config_5g_rssi_close = 1;
+    legacy_request->rssi_close_5g_val =
+          hidl_request.bandSpecificConfig[
+              (size_t) NanBandIndex::NAN_BAND_5GHZ].rssiClose;
+    legacy_request->config_5g_rssi_middle = 1;
+    legacy_request->rssi_middle_5g_val =
+          hidl_request.bandSpecificConfig[
+              (size_t) NanBandIndex::NAN_BAND_5GHZ].rssiMiddle;
+    */
+    legacy_request->config_5g_rssi_close_proximity = 1;
+    legacy_request->rssi_close_proximity_5g_val =
+            hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ].rssiCloseProximity;
+    legacy_request->scan_params_val.dwell_time[legacy_hal::NAN_CHANNEL_5G_BAND_LOW] =
+            hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ].dwellTimeMs;
+    legacy_request->scan_params_val.scan_period[legacy_hal::NAN_CHANNEL_5G_BAND_LOW] =
+            hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ].scanPeriodSec;
+    legacy_request->scan_params_val.dwell_time[legacy_hal::NAN_CHANNEL_5G_BAND_HIGH] =
+            hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ].dwellTimeMs;
+    legacy_request->scan_params_val.scan_period[legacy_hal::NAN_CHANNEL_5G_BAND_HIGH] =
+            hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ].scanPeriodSec;
+    legacy_request->config_dw.config_5g_dw_band =
+            hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
+                    .validDiscoveryWindowIntervalVal;
+    legacy_request->config_dw.dw_5g_interval_val =
+            hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
+                    .discoveryWindowIntervalVal;
+    /* TODO: b/145609058
+     * Missing updates needed to legacy_hal::NanConfigRequest and conversion to
+     * it for 6GHz band */
+
+    return true;
+}
+
+bool convertHidlNanConfigRequest_1_4ToLegacy(const V1_4::NanConfigRequest& hidl_request1,
+                                             const NanConfigRequestSupplemental& hidl_request2,
+                                             legacy_hal::NanConfigRequest* legacy_request) {
+    if (!legacy_request) {
+        LOG(ERROR) << "convertHidlNanConfigRequest_1_4ToLegacy: legacy_request "
+                      "is null";
+        return false;
+    }
+
+    *legacy_request = {};
+    if (!convertHidlNanConfigRequestToLegacy(hidl_request1, legacy_request)) {
+        return false;
+    }
+
+    legacy_request->config_discovery_beacon_int = 1;
+    legacy_request->discovery_beacon_interval = hidl_request2.V1_2.discoveryBeaconIntervalMs;
+    legacy_request->config_nss = 1;
+    legacy_request->nss = hidl_request2.V1_2.numberOfSpatialStreamsInDiscovery;
+    legacy_request->config_dw_early_termination = 1;
+    legacy_request->enable_dw_termination =
+            hidl_request2.V1_2.enableDiscoveryWindowEarlyTermination;
+    legacy_request->config_enable_ranging = 1;
+    legacy_request->enable_ranging = hidl_request2.V1_2.enableRanging;
+
+    return true;
+}
+
+bool convertHidlNanDataPathInitiatorRequestToLegacy(
+        const NanInitiateDataPathRequest& hidl_request,
+        legacy_hal::NanDataPathInitiatorRequest* legacy_request) {
+    if (!legacy_request) {
+        LOG(ERROR) << "convertHidlNanDataPathInitiatorRequestToLegacy: "
+                      "legacy_request is null";
+        return false;
+    }
+    *legacy_request = {};
+
+    legacy_request->requestor_instance_id = hidl_request.peerId;
+    memcpy(legacy_request->peer_disc_mac_addr, hidl_request.peerDiscMacAddr.data(), 6);
+    legacy_request->channel_request_type =
+            convertHidlNanDataPathChannelCfgToLegacy(hidl_request.channelRequestType);
+    legacy_request->channel = hidl_request.channel;
+    if (strnlen(hidl_request.ifaceName.c_str(), IFNAMSIZ + 1) == IFNAMSIZ + 1) {
+        LOG(ERROR) << "convertHidlNanDataPathInitiatorRequestToLegacy: "
+                      "ifaceName too long";
+        return false;
+    }
+    strncpy(legacy_request->ndp_iface, hidl_request.ifaceName.c_str(), IFNAMSIZ + 1);
+    legacy_request->ndp_cfg.security_cfg =
+            (hidl_request.securityConfig.securityType != NanDataPathSecurityType::OPEN)
+                    ? legacy_hal::NAN_DP_CONFIG_SECURITY
+                    : legacy_hal::NAN_DP_CONFIG_NO_SECURITY;
+    legacy_request->app_info.ndp_app_info_len = hidl_request.appInfo.size();
+    if (legacy_request->app_info.ndp_app_info_len > NAN_DP_MAX_APP_INFO_LEN) {
+        LOG(ERROR) << "convertHidlNanDataPathInitiatorRequestToLegacy: "
+                      "ndp_app_info_len too large";
+        return false;
+    }
+    memcpy(legacy_request->app_info.ndp_app_info, hidl_request.appInfo.data(),
+           legacy_request->app_info.ndp_app_info_len);
+    legacy_request->cipher_type = (unsigned int)hidl_request.securityConfig.cipherType;
+    if (hidl_request.securityConfig.securityType == NanDataPathSecurityType::PMK) {
+        legacy_request->key_info.key_type = legacy_hal::NAN_SECURITY_KEY_INPUT_PMK;
+        legacy_request->key_info.body.pmk_info.pmk_len = hidl_request.securityConfig.pmk.size();
+        if (legacy_request->key_info.body.pmk_info.pmk_len != NAN_PMK_INFO_LEN) {
+            LOG(ERROR) << "convertHidlNanDataPathInitiatorRequestToLegacy: "
+                          "invalid pmk_len";
+            return false;
+        }
+        memcpy(legacy_request->key_info.body.pmk_info.pmk, hidl_request.securityConfig.pmk.data(),
+               legacy_request->key_info.body.pmk_info.pmk_len);
+    }
+    if (hidl_request.securityConfig.securityType == NanDataPathSecurityType::PASSPHRASE) {
+        legacy_request->key_info.key_type = legacy_hal::NAN_SECURITY_KEY_INPUT_PASSPHRASE;
+        legacy_request->key_info.body.passphrase_info.passphrase_len =
+                hidl_request.securityConfig.passphrase.size();
+        if (legacy_request->key_info.body.passphrase_info.passphrase_len <
+            NAN_SECURITY_MIN_PASSPHRASE_LEN) {
+            LOG(ERROR) << "convertHidlNanDataPathInitiatorRequestToLegacy: "
+                          "passphrase_len too small";
+            return false;
+        }
+        if (legacy_request->key_info.body.passphrase_info.passphrase_len >
+            NAN_SECURITY_MAX_PASSPHRASE_LEN) {
+            LOG(ERROR) << "convertHidlNanDataPathInitiatorRequestToLegacy: "
+                          "passphrase_len too large";
+            return false;
+        }
+        memcpy(legacy_request->key_info.body.passphrase_info.passphrase,
+               hidl_request.securityConfig.passphrase.data(),
+               legacy_request->key_info.body.passphrase_info.passphrase_len);
+    }
+    legacy_request->service_name_len = hidl_request.serviceNameOutOfBand.size();
+    if (legacy_request->service_name_len > NAN_MAX_SERVICE_NAME_LEN) {
+        LOG(ERROR) << "convertHidlNanDataPathInitiatorRequestToLegacy: "
+                      "service_name_len too large";
+        return false;
+    }
+    memcpy(legacy_request->service_name, hidl_request.serviceNameOutOfBand.data(),
+           legacy_request->service_name_len);
+
+    return true;
+}
+
+bool convertHidlNanDataPathIndicationResponseToLegacy(
+        const NanRespondToDataPathIndicationRequest& hidl_request,
+        legacy_hal::NanDataPathIndicationResponse* legacy_request) {
+    if (!legacy_request) {
+        LOG(ERROR) << "convertHidlNanDataPathIndicationResponseToLegacy: "
+                      "legacy_request is null";
+        return false;
+    }
+    *legacy_request = {};
+
+    legacy_request->rsp_code = hidl_request.acceptRequest ? legacy_hal::NAN_DP_REQUEST_ACCEPT
+                                                          : legacy_hal::NAN_DP_REQUEST_REJECT;
+    legacy_request->ndp_instance_id = hidl_request.ndpInstanceId;
+    if (strnlen(hidl_request.ifaceName.c_str(), IFNAMSIZ + 1) == IFNAMSIZ + 1) {
+        LOG(ERROR) << "convertHidlNanDataPathIndicationResponseToLegacy: "
+                      "ifaceName too long";
+        return false;
+    }
+    strncpy(legacy_request->ndp_iface, hidl_request.ifaceName.c_str(), IFNAMSIZ + 1);
+    legacy_request->ndp_cfg.security_cfg =
+            (hidl_request.securityConfig.securityType != NanDataPathSecurityType::OPEN)
+                    ? legacy_hal::NAN_DP_CONFIG_SECURITY
+                    : legacy_hal::NAN_DP_CONFIG_NO_SECURITY;
+    legacy_request->app_info.ndp_app_info_len = hidl_request.appInfo.size();
+    if (legacy_request->app_info.ndp_app_info_len > NAN_DP_MAX_APP_INFO_LEN) {
+        LOG(ERROR) << "convertHidlNanDataPathIndicationResponseToLegacy: "
+                      "ndp_app_info_len too large";
+        return false;
+    }
+    memcpy(legacy_request->app_info.ndp_app_info, hidl_request.appInfo.data(),
+           legacy_request->app_info.ndp_app_info_len);
+    legacy_request->cipher_type = (unsigned int)hidl_request.securityConfig.cipherType;
+    if (hidl_request.securityConfig.securityType == NanDataPathSecurityType::PMK) {
+        legacy_request->key_info.key_type = legacy_hal::NAN_SECURITY_KEY_INPUT_PMK;
+        legacy_request->key_info.body.pmk_info.pmk_len = hidl_request.securityConfig.pmk.size();
+        if (legacy_request->key_info.body.pmk_info.pmk_len != NAN_PMK_INFO_LEN) {
+            LOG(ERROR) << "convertHidlNanDataPathIndicationResponseToLegacy: "
+                          "invalid pmk_len";
+            return false;
+        }
+        memcpy(legacy_request->key_info.body.pmk_info.pmk, hidl_request.securityConfig.pmk.data(),
+               legacy_request->key_info.body.pmk_info.pmk_len);
+    }
+    if (hidl_request.securityConfig.securityType == NanDataPathSecurityType::PASSPHRASE) {
+        legacy_request->key_info.key_type = legacy_hal::NAN_SECURITY_KEY_INPUT_PASSPHRASE;
+        legacy_request->key_info.body.passphrase_info.passphrase_len =
+                hidl_request.securityConfig.passphrase.size();
+        if (legacy_request->key_info.body.passphrase_info.passphrase_len <
+            NAN_SECURITY_MIN_PASSPHRASE_LEN) {
+            LOG(ERROR) << "convertHidlNanDataPathIndicationResponseToLegacy: "
+                          "passphrase_len too small";
+            return false;
+        }
+        if (legacy_request->key_info.body.passphrase_info.passphrase_len >
+            NAN_SECURITY_MAX_PASSPHRASE_LEN) {
+            LOG(ERROR) << "convertHidlNanDataPathIndicationResponseToLegacy: "
+                          "passphrase_len too large";
+            return false;
+        }
+        memcpy(legacy_request->key_info.body.passphrase_info.passphrase,
+               hidl_request.securityConfig.passphrase.data(),
+               legacy_request->key_info.body.passphrase_info.passphrase_len);
+    }
+    legacy_request->service_name_len = hidl_request.serviceNameOutOfBand.size();
+    if (legacy_request->service_name_len > NAN_MAX_SERVICE_NAME_LEN) {
+        LOG(ERROR) << "convertHidlNanDataPathIndicationResponseToLegacy: "
+                      "service_name_len too large";
+        return false;
+    }
+    memcpy(legacy_request->service_name, hidl_request.serviceNameOutOfBand.data(),
+           legacy_request->service_name_len);
+
+    return true;
+}
+
+bool convertLegacyNanResponseHeaderToHidl(const legacy_hal::NanResponseMsg& legacy_response,
+                                          WifiNanStatus* wifiNanStatus) {
+    if (!wifiNanStatus) {
+        LOG(ERROR) << "convertLegacyNanResponseHeaderToHidl: wifiNanStatus is null";
+        return false;
+    }
+    *wifiNanStatus = {};
+
+    convertToWifiNanStatus(legacy_response.status, legacy_response.nan_error,
+                           sizeof(legacy_response.nan_error), wifiNanStatus);
+    return true;
+}
+
+bool convertLegacyNanCapabilitiesResponseToHidl(const legacy_hal::NanCapabilities& legacy_response,
+                                                V1_5::NanCapabilities* hidl_response) {
+    if (!hidl_response) {
+        LOG(ERROR) << "convertLegacyNanCapabilitiesResponseToHidl: "
+                      "hidl_response is null";
+        return false;
+    }
+    *hidl_response = {};
+
+    hidl_response->V1_0.maxConcurrentClusters = legacy_response.max_concurrent_nan_clusters;
+    hidl_response->V1_0.maxPublishes = legacy_response.max_publishes;
+    hidl_response->V1_0.maxSubscribes = legacy_response.max_subscribes;
+    hidl_response->V1_0.maxServiceNameLen = legacy_response.max_service_name_len;
+    hidl_response->V1_0.maxMatchFilterLen = legacy_response.max_match_filter_len;
+    hidl_response->V1_0.maxTotalMatchFilterLen = legacy_response.max_total_match_filter_len;
+    hidl_response->V1_0.maxServiceSpecificInfoLen = legacy_response.max_service_specific_info_len;
+    hidl_response->V1_0.maxExtendedServiceSpecificInfoLen =
+            legacy_response.max_sdea_service_specific_info_len;
+    hidl_response->V1_0.maxNdiInterfaces = legacy_response.max_ndi_interfaces;
+    hidl_response->V1_0.maxNdpSessions = legacy_response.max_ndp_sessions;
+    hidl_response->V1_0.maxAppInfoLen = legacy_response.max_app_info_len;
+    hidl_response->V1_0.maxQueuedTransmitFollowupMsgs =
+            legacy_response.max_queued_transmit_followup_msgs;
+    hidl_response->V1_0.maxSubscribeInterfaceAddresses = legacy_response.max_subscribe_address;
+    hidl_response->V1_0.supportedCipherSuites = legacy_response.cipher_suites_supported;
+    hidl_response->instantCommunicationModeSupportFlag = legacy_response.is_instant_mode_supported;
+
+    return true;
+}
+
+bool convertLegacyNanMatchIndToHidl(const legacy_hal::NanMatchInd& legacy_ind,
+                                    NanMatchInd* hidl_ind) {
+    if (!hidl_ind) {
+        LOG(ERROR) << "convertLegacyNanMatchIndToHidl: hidl_ind is null";
+        return false;
+    }
+    *hidl_ind = {};
+
+    hidl_ind->discoverySessionId = legacy_ind.publish_subscribe_id;
+    hidl_ind->peerId = legacy_ind.requestor_instance_id;
+    hidl_ind->addr = hidl_array<uint8_t, 6>(legacy_ind.addr);
+    hidl_ind->serviceSpecificInfo = std::vector<uint8_t>(
+            legacy_ind.service_specific_info,
+            legacy_ind.service_specific_info + legacy_ind.service_specific_info_len);
+    hidl_ind->extendedServiceSpecificInfo = std::vector<uint8_t>(
+            legacy_ind.sdea_service_specific_info,
+            legacy_ind.sdea_service_specific_info + legacy_ind.sdea_service_specific_info_len);
+    hidl_ind->matchFilter =
+            std::vector<uint8_t>(legacy_ind.sdf_match_filter,
+                                 legacy_ind.sdf_match_filter + legacy_ind.sdf_match_filter_len);
+    hidl_ind->matchOccuredInBeaconFlag = legacy_ind.match_occured_flag == 1;
+    hidl_ind->outOfResourceFlag = legacy_ind.out_of_resource_flag == 1;
+    hidl_ind->rssiValue = legacy_ind.rssi_value;
+    hidl_ind->peerCipherType = (NanCipherSuiteType)legacy_ind.peer_cipher_type;
+    hidl_ind->peerRequiresSecurityEnabledInNdp =
+            legacy_ind.peer_sdea_params.security_cfg == legacy_hal::NAN_DP_CONFIG_SECURITY;
+    hidl_ind->peerRequiresRanging =
+            legacy_ind.peer_sdea_params.ranging_state == legacy_hal::NAN_RANGING_ENABLE;
+    hidl_ind->rangingMeasurementInCm = legacy_ind.range_info.range_measurement_mm / 10;
+    hidl_ind->rangingIndicationType = legacy_ind.range_info.ranging_event_type;
+
+    return true;
+}
+
+bool convertLegacyNanFollowupIndToHidl(const legacy_hal::NanFollowupInd& legacy_ind,
+                                       NanFollowupReceivedInd* hidl_ind) {
+    if (!hidl_ind) {
+        LOG(ERROR) << "convertLegacyNanFollowupIndToHidl: hidl_ind is null";
+        return false;
+    }
+    *hidl_ind = {};
+
+    hidl_ind->discoverySessionId = legacy_ind.publish_subscribe_id;
+    hidl_ind->peerId = legacy_ind.requestor_instance_id;
+    hidl_ind->addr = hidl_array<uint8_t, 6>(legacy_ind.addr);
+    hidl_ind->receivedInFaw = legacy_ind.dw_or_faw == 1;
+    hidl_ind->serviceSpecificInfo = std::vector<uint8_t>(
+            legacy_ind.service_specific_info,
+            legacy_ind.service_specific_info + legacy_ind.service_specific_info_len);
+    hidl_ind->extendedServiceSpecificInfo = std::vector<uint8_t>(
+            legacy_ind.sdea_service_specific_info,
+            legacy_ind.sdea_service_specific_info + legacy_ind.sdea_service_specific_info_len);
+
+    return true;
+}
+
+bool convertLegacyNanDataPathRequestIndToHidl(const legacy_hal::NanDataPathRequestInd& legacy_ind,
+                                              NanDataPathRequestInd* hidl_ind) {
+    if (!hidl_ind) {
+        LOG(ERROR) << "convertLegacyNanDataPathRequestIndToHidl: hidl_ind is null";
+        return false;
+    }
+    *hidl_ind = {};
+
+    hidl_ind->discoverySessionId = legacy_ind.service_instance_id;
+    hidl_ind->peerDiscMacAddr = hidl_array<uint8_t, 6>(legacy_ind.peer_disc_mac_addr);
+    hidl_ind->ndpInstanceId = legacy_ind.ndp_instance_id;
+    hidl_ind->securityRequired =
+            legacy_ind.ndp_cfg.security_cfg == legacy_hal::NAN_DP_CONFIG_SECURITY;
+    hidl_ind->appInfo = std::vector<uint8_t>(
+            legacy_ind.app_info.ndp_app_info,
+            legacy_ind.app_info.ndp_app_info + legacy_ind.app_info.ndp_app_info_len);
+
+    return true;
+}
+
+bool convertLegacyNdpChannelInfoToHidl(const legacy_hal::NanChannelInfo& legacy_struct,
+                                       V1_2::NanDataPathChannelInfo* hidl_struct) {
+    if (!hidl_struct) {
+        LOG(ERROR) << "convertLegacyNdpChannelInfoToHidl: hidl_struct is null";
+        return false;
+    }
+    *hidl_struct = {};
+
+    hidl_struct->channelFreq = legacy_struct.channel;
+    hidl_struct->channelBandwidth = convertLegacyWifiChannelWidthToHidl(
+            (legacy_hal::wifi_channel_width)legacy_struct.bandwidth);
+    hidl_struct->numSpatialStreams = legacy_struct.nss;
+
+    return true;
+}
+
+bool convertLegacyNanDataPathConfirmIndToHidl(const legacy_hal::NanDataPathConfirmInd& legacy_ind,
+                                              V1_2::NanDataPathConfirmInd* hidl_ind) {
+    if (!hidl_ind) {
+        LOG(ERROR) << "convertLegacyNanDataPathConfirmIndToHidl: hidl_ind is null";
+        return false;
+    }
+    *hidl_ind = {};
+
+    hidl_ind->V1_0.ndpInstanceId = legacy_ind.ndp_instance_id;
+    hidl_ind->V1_0.dataPathSetupSuccess = legacy_ind.rsp_code == legacy_hal::NAN_DP_REQUEST_ACCEPT;
+    hidl_ind->V1_0.peerNdiMacAddr = hidl_array<uint8_t, 6>(legacy_ind.peer_ndi_mac_addr);
+    hidl_ind->V1_0.appInfo = std::vector<uint8_t>(
+            legacy_ind.app_info.ndp_app_info,
+            legacy_ind.app_info.ndp_app_info + legacy_ind.app_info.ndp_app_info_len);
+    hidl_ind->V1_0.status.status = convertLegacyNanStatusTypeToHidl(legacy_ind.reason_code);
+    hidl_ind->V1_0.status.description = "";  // TODO: b/34059183
+
+    std::vector<V1_2::NanDataPathChannelInfo> channelInfo;
+    for (unsigned int i = 0; i < legacy_ind.num_channels; ++i) {
+        V1_2::NanDataPathChannelInfo hidl_struct;
+        if (!convertLegacyNdpChannelInfoToHidl(legacy_ind.channel_info[i], &hidl_struct)) {
+            return false;
+        }
+        channelInfo.push_back(hidl_struct);
+    }
+    hidl_ind->channelInfo = channelInfo;
+
+    return true;
+}
+
+bool convertLegacyNanDataPathScheduleUpdateIndToHidl(
+        const legacy_hal::NanDataPathScheduleUpdateInd& legacy_ind,
+        V1_2::NanDataPathScheduleUpdateInd* hidl_ind) {
+    if (!hidl_ind) {
+        LOG(ERROR) << "convertLegacyNanDataPathScheduleUpdateIndToHidl: "
+                      "hidl_ind is null";
+        return false;
+    }
+    *hidl_ind = {};
+
+    hidl_ind->peerDiscoveryAddress = hidl_array<uint8_t, 6>(legacy_ind.peer_mac_addr);
+    std::vector<V1_2::NanDataPathChannelInfo> channelInfo;
+    for (unsigned int i = 0; i < legacy_ind.num_channels; ++i) {
+        V1_2::NanDataPathChannelInfo hidl_struct;
+        if (!convertLegacyNdpChannelInfoToHidl(legacy_ind.channel_info[i], &hidl_struct)) {
+            return false;
+        }
+        channelInfo.push_back(hidl_struct);
+    }
+    hidl_ind->channelInfo = channelInfo;
+    std::vector<uint32_t> ndpInstanceIds;
+    for (unsigned int i = 0; i < legacy_ind.num_ndp_instances; ++i) {
+        ndpInstanceIds.push_back(legacy_ind.ndp_instance_id[i]);
+    }
+    hidl_ind->ndpInstanceIds = ndpInstanceIds;
+
+    return true;
+}
+
+legacy_hal::wifi_rtt_type convertHidlRttTypeToLegacy(RttType type) {
+    switch (type) {
+        case RttType::ONE_SIDED:
+            return legacy_hal::RTT_TYPE_1_SIDED;
+        case RttType::TWO_SIDED:
+            return legacy_hal::RTT_TYPE_2_SIDED;
+    };
+    CHECK(false);
+}
+
+RttType convertLegacyRttTypeToHidl(legacy_hal::wifi_rtt_type type) {
+    switch (type) {
+        case legacy_hal::RTT_TYPE_1_SIDED:
+            return RttType::ONE_SIDED;
+        case legacy_hal::RTT_TYPE_2_SIDED:
+            return RttType::TWO_SIDED;
+    };
+    CHECK(false) << "Unknown legacy type: " << type;
+}
+
+legacy_hal::rtt_peer_type convertHidlRttPeerTypeToLegacy(RttPeerType type) {
+    switch (type) {
+        case RttPeerType::AP:
+            return legacy_hal::RTT_PEER_AP;
+        case RttPeerType::STA:
+            return legacy_hal::RTT_PEER_STA;
+        case RttPeerType::P2P_GO:
+            return legacy_hal::RTT_PEER_P2P_GO;
+        case RttPeerType::P2P_CLIENT:
+            return legacy_hal::RTT_PEER_P2P_CLIENT;
+        case RttPeerType::NAN:
+            return legacy_hal::RTT_PEER_NAN;
+    };
+    CHECK(false);
+}
+
+legacy_hal::wifi_channel_width convertHidlWifiChannelWidthToLegacy(WifiChannelWidthInMhz type) {
+    switch (type) {
+        case WifiChannelWidthInMhz::WIDTH_20:
+            return legacy_hal::WIFI_CHAN_WIDTH_20;
+        case WifiChannelWidthInMhz::WIDTH_40:
+            return legacy_hal::WIFI_CHAN_WIDTH_40;
+        case WifiChannelWidthInMhz::WIDTH_80:
+            return legacy_hal::WIFI_CHAN_WIDTH_80;
+        case WifiChannelWidthInMhz::WIDTH_160:
+            return legacy_hal::WIFI_CHAN_WIDTH_160;
+        case WifiChannelWidthInMhz::WIDTH_80P80:
+            return legacy_hal::WIFI_CHAN_WIDTH_80P80;
+        case WifiChannelWidthInMhz::WIDTH_5:
+            return legacy_hal::WIFI_CHAN_WIDTH_5;
+        case WifiChannelWidthInMhz::WIDTH_10:
+            return legacy_hal::WIFI_CHAN_WIDTH_10;
+        case WifiChannelWidthInMhz::WIDTH_INVALID:
+            return legacy_hal::WIFI_CHAN_WIDTH_INVALID;
+    };
+    CHECK(false);
+}
+
+WifiChannelWidthInMhz convertLegacyWifiChannelWidthToHidl(legacy_hal::wifi_channel_width type) {
+    switch (type) {
+        case legacy_hal::WIFI_CHAN_WIDTH_20:
+            return WifiChannelWidthInMhz::WIDTH_20;
+        case legacy_hal::WIFI_CHAN_WIDTH_40:
+            return WifiChannelWidthInMhz::WIDTH_40;
+        case legacy_hal::WIFI_CHAN_WIDTH_80:
+            return WifiChannelWidthInMhz::WIDTH_80;
+        case legacy_hal::WIFI_CHAN_WIDTH_160:
+            return WifiChannelWidthInMhz::WIDTH_160;
+        case legacy_hal::WIFI_CHAN_WIDTH_80P80:
+            return WifiChannelWidthInMhz::WIDTH_80P80;
+        case legacy_hal::WIFI_CHAN_WIDTH_5:
+            return WifiChannelWidthInMhz::WIDTH_5;
+        case legacy_hal::WIFI_CHAN_WIDTH_10:
+            return WifiChannelWidthInMhz::WIDTH_10;
+        default:
+            return WifiChannelWidthInMhz::WIDTH_INVALID;
+    };
+}
+
+legacy_hal::wifi_rtt_preamble convertHidlRttPreambleToLegacy(V1_4::RttPreamble type) {
+    switch (type) {
+        case V1_4::RttPreamble::LEGACY:
+            return legacy_hal::WIFI_RTT_PREAMBLE_LEGACY;
+        case V1_4::RttPreamble::HT:
+            return legacy_hal::WIFI_RTT_PREAMBLE_HT;
+        case V1_4::RttPreamble::VHT:
+            return legacy_hal::WIFI_RTT_PREAMBLE_VHT;
+        case V1_4::RttPreamble::HE:
+            return legacy_hal::WIFI_RTT_PREAMBLE_HE;
+    };
+    CHECK(false);
+}
+
+V1_4::RttPreamble convertLegacyRttPreambleToHidl(legacy_hal::wifi_rtt_preamble type) {
+    switch (type) {
+        case legacy_hal::WIFI_RTT_PREAMBLE_LEGACY:
+            return V1_4::RttPreamble::LEGACY;
+        case legacy_hal::WIFI_RTT_PREAMBLE_HT:
+            return V1_4::RttPreamble::HT;
+        case legacy_hal::WIFI_RTT_PREAMBLE_VHT:
+            return V1_4::RttPreamble::VHT;
+        case legacy_hal::WIFI_RTT_PREAMBLE_HE:
+            return V1_4::RttPreamble::HE;
+    };
+    CHECK(false) << "Unknown legacy type: " << type;
+}
+
+legacy_hal::wifi_rtt_bw convertHidlRttBwToLegacy(RttBw type) {
+    switch (type) {
+        case RttBw::BW_5MHZ:
+            return legacy_hal::WIFI_RTT_BW_5;
+        case RttBw::BW_10MHZ:
+            return legacy_hal::WIFI_RTT_BW_10;
+        case RttBw::BW_20MHZ:
+            return legacy_hal::WIFI_RTT_BW_20;
+        case RttBw::BW_40MHZ:
+            return legacy_hal::WIFI_RTT_BW_40;
+        case RttBw::BW_80MHZ:
+            return legacy_hal::WIFI_RTT_BW_80;
+        case RttBw::BW_160MHZ:
+            return legacy_hal::WIFI_RTT_BW_160;
+    };
+    CHECK(false);
+}
+
+RttBw convertLegacyRttBwToHidl(legacy_hal::wifi_rtt_bw type) {
+    switch (type) {
+        case legacy_hal::WIFI_RTT_BW_5:
+            return RttBw::BW_5MHZ;
+        case legacy_hal::WIFI_RTT_BW_10:
+            return RttBw::BW_10MHZ;
+        case legacy_hal::WIFI_RTT_BW_20:
+            return RttBw::BW_20MHZ;
+        case legacy_hal::WIFI_RTT_BW_40:
+            return RttBw::BW_40MHZ;
+        case legacy_hal::WIFI_RTT_BW_80:
+            return RttBw::BW_80MHZ;
+        case legacy_hal::WIFI_RTT_BW_160:
+            return RttBw::BW_160MHZ;
+    };
+    CHECK(false) << "Unknown legacy type: " << type;
+}
+
+legacy_hal::wifi_motion_pattern convertHidlRttMotionPatternToLegacy(RttMotionPattern type) {
+    switch (type) {
+        case RttMotionPattern::NOT_EXPECTED:
+            return legacy_hal::WIFI_MOTION_NOT_EXPECTED;
+        case RttMotionPattern::EXPECTED:
+            return legacy_hal::WIFI_MOTION_EXPECTED;
+        case RttMotionPattern::UNKNOWN:
+            return legacy_hal::WIFI_MOTION_UNKNOWN;
+    };
+    CHECK(false);
+}
+
+V1_4::WifiRatePreamble convertLegacyWifiRatePreambleToHidl(uint8_t preamble) {
+    switch (preamble) {
+        case 0:
+            return V1_4::WifiRatePreamble::OFDM;
+        case 1:
+            return V1_4::WifiRatePreamble::CCK;
+        case 2:
+            return V1_4::WifiRatePreamble::HT;
+        case 3:
+            return V1_4::WifiRatePreamble::VHT;
+        case 4:
+            return V1_4::WifiRatePreamble::HE;
+        default:
+            return V1_4::WifiRatePreamble::RESERVED;
+    };
+    CHECK(false) << "Unknown legacy preamble: " << preamble;
+}
+
+WifiRateNss convertLegacyWifiRateNssToHidl(uint8_t nss) {
+    switch (nss) {
+        case 0:
+            return WifiRateNss::NSS_1x1;
+        case 1:
+            return WifiRateNss::NSS_2x2;
+        case 2:
+            return WifiRateNss::NSS_3x3;
+        case 3:
+            return WifiRateNss::NSS_4x4;
+    };
+    CHECK(false) << "Unknown legacy nss: " << nss;
+    return {};
+}
+
+RttStatus convertLegacyRttStatusToHidl(legacy_hal::wifi_rtt_status status) {
+    switch (status) {
+        case legacy_hal::RTT_STATUS_SUCCESS:
+            return RttStatus::SUCCESS;
+        case legacy_hal::RTT_STATUS_FAILURE:
+            return RttStatus::FAILURE;
+        case legacy_hal::RTT_STATUS_FAIL_NO_RSP:
+            return RttStatus::FAIL_NO_RSP;
+        case legacy_hal::RTT_STATUS_FAIL_REJECTED:
+            return RttStatus::FAIL_REJECTED;
+        case legacy_hal::RTT_STATUS_FAIL_NOT_SCHEDULED_YET:
+            return RttStatus::FAIL_NOT_SCHEDULED_YET;
+        case legacy_hal::RTT_STATUS_FAIL_TM_TIMEOUT:
+            return RttStatus::FAIL_TM_TIMEOUT;
+        case legacy_hal::RTT_STATUS_FAIL_AP_ON_DIFF_CHANNEL:
+            return RttStatus::FAIL_AP_ON_DIFF_CHANNEL;
+        case legacy_hal::RTT_STATUS_FAIL_NO_CAPABILITY:
+            return RttStatus::FAIL_NO_CAPABILITY;
+        case legacy_hal::RTT_STATUS_ABORTED:
+            return RttStatus::ABORTED;
+        case legacy_hal::RTT_STATUS_FAIL_INVALID_TS:
+            return RttStatus::FAIL_INVALID_TS;
+        case legacy_hal::RTT_STATUS_FAIL_PROTOCOL:
+            return RttStatus::FAIL_PROTOCOL;
+        case legacy_hal::RTT_STATUS_FAIL_SCHEDULE:
+            return RttStatus::FAIL_SCHEDULE;
+        case legacy_hal::RTT_STATUS_FAIL_BUSY_TRY_LATER:
+            return RttStatus::FAIL_BUSY_TRY_LATER;
+        case legacy_hal::RTT_STATUS_INVALID_REQ:
+            return RttStatus::INVALID_REQ;
+        case legacy_hal::RTT_STATUS_NO_WIFI:
+            return RttStatus::NO_WIFI;
+        case legacy_hal::RTT_STATUS_FAIL_FTM_PARAM_OVERRIDE:
+            return RttStatus::FAIL_FTM_PARAM_OVERRIDE;
+        case legacy_hal::RTT_STATUS_NAN_RANGING_PROTOCOL_FAILURE:
+            return RttStatus::FAILURE;  // TODO: add HIDL enumeration
+        case legacy_hal::RTT_STATUS_NAN_RANGING_CONCURRENCY_NOT_SUPPORTED:
+            return RttStatus::FAILURE;  // TODO: add HIDL enumeration
+    };
+    CHECK(false) << "Unknown legacy status: " << status;
+}
+
+bool convertHidlWifiChannelInfoToLegacy(const WifiChannelInfo& hidl_info,
+                                        legacy_hal::wifi_channel_info* legacy_info) {
+    if (!legacy_info) {
+        return false;
+    }
+    *legacy_info = {};
+    legacy_info->width = convertHidlWifiChannelWidthToLegacy(hidl_info.width);
+    legacy_info->center_freq = hidl_info.centerFreq;
+    legacy_info->center_freq0 = hidl_info.centerFreq0;
+    legacy_info->center_freq1 = hidl_info.centerFreq1;
+    return true;
+}
+
+bool convertLegacyWifiChannelInfoToHidl(const legacy_hal::wifi_channel_info& legacy_info,
+                                        WifiChannelInfo* hidl_info) {
+    if (!hidl_info) {
+        return false;
+    }
+    *hidl_info = {};
+    hidl_info->width = convertLegacyWifiChannelWidthToHidl(legacy_info.width);
+    hidl_info->centerFreq = legacy_info.center_freq;
+    hidl_info->centerFreq0 = legacy_info.center_freq0;
+    hidl_info->centerFreq1 = legacy_info.center_freq1;
+    return true;
+}
+
+bool convertHidlRttConfigToLegacy(const V1_4::RttConfig& hidl_config,
+                                  legacy_hal::wifi_rtt_config* legacy_config) {
+    if (!legacy_config) {
+        return false;
+    }
+    *legacy_config = {};
+    CHECK(hidl_config.addr.size() == sizeof(legacy_config->addr));
+    memcpy(legacy_config->addr, hidl_config.addr.data(), hidl_config.addr.size());
+    legacy_config->type = convertHidlRttTypeToLegacy(hidl_config.type);
+    legacy_config->peer = convertHidlRttPeerTypeToLegacy(hidl_config.peer);
+    if (!convertHidlWifiChannelInfoToLegacy(hidl_config.channel, &legacy_config->channel)) {
+        return false;
+    }
+    legacy_config->burst_period = hidl_config.burstPeriod;
+    legacy_config->num_burst = hidl_config.numBurst;
+    legacy_config->num_frames_per_burst = hidl_config.numFramesPerBurst;
+    legacy_config->num_retries_per_rtt_frame = hidl_config.numRetriesPerRttFrame;
+    legacy_config->num_retries_per_ftmr = hidl_config.numRetriesPerFtmr;
+    legacy_config->LCI_request = hidl_config.mustRequestLci;
+    legacy_config->LCR_request = hidl_config.mustRequestLcr;
+    legacy_config->burst_duration = hidl_config.burstDuration;
+    legacy_config->preamble = convertHidlRttPreambleToLegacy(hidl_config.preamble);
+    legacy_config->bw = convertHidlRttBwToLegacy(hidl_config.bw);
+    return true;
+}
+
+bool convertHidlVectorOfRttConfigToLegacy(
+        const std::vector<V1_4::RttConfig>& hidl_configs,
+        std::vector<legacy_hal::wifi_rtt_config>* legacy_configs) {
+    if (!legacy_configs) {
+        return false;
+    }
+    *legacy_configs = {};
+    for (const auto& hidl_config : hidl_configs) {
+        legacy_hal::wifi_rtt_config legacy_config;
+        if (!convertHidlRttConfigToLegacy(hidl_config, &legacy_config)) {
+            return false;
+        }
+        legacy_configs->push_back(legacy_config);
+    }
+    return true;
+}
+
+bool convertHidlRttLciInformationToLegacy(const RttLciInformation& hidl_info,
+                                          legacy_hal::wifi_lci_information* legacy_info) {
+    if (!legacy_info) {
+        return false;
+    }
+    *legacy_info = {};
+    legacy_info->latitude = hidl_info.latitude;
+    legacy_info->longitude = hidl_info.longitude;
+    legacy_info->altitude = hidl_info.altitude;
+    legacy_info->latitude_unc = hidl_info.latitudeUnc;
+    legacy_info->longitude_unc = hidl_info.longitudeUnc;
+    legacy_info->altitude_unc = hidl_info.altitudeUnc;
+    legacy_info->motion_pattern = convertHidlRttMotionPatternToLegacy(hidl_info.motionPattern);
+    legacy_info->floor = hidl_info.floor;
+    legacy_info->height_above_floor = hidl_info.heightAboveFloor;
+    legacy_info->height_unc = hidl_info.heightUnc;
+    return true;
+}
+
+bool convertHidlRttLcrInformationToLegacy(const RttLcrInformation& hidl_info,
+                                          legacy_hal::wifi_lcr_information* legacy_info) {
+    if (!legacy_info) {
+        return false;
+    }
+    *legacy_info = {};
+    CHECK(hidl_info.countryCode.size() == sizeof(legacy_info->country_code));
+    memcpy(legacy_info->country_code, hidl_info.countryCode.data(), hidl_info.countryCode.size());
+    if (hidl_info.civicInfo.size() > sizeof(legacy_info->civic_info)) {
+        return false;
+    }
+    legacy_info->length = hidl_info.civicInfo.size();
+    memcpy(legacy_info->civic_info, hidl_info.civicInfo.c_str(), hidl_info.civicInfo.size());
+    return true;
+}
+
+bool convertHidlRttResponderToLegacy(const V1_4::RttResponder& hidl_responder,
+                                     legacy_hal::wifi_rtt_responder* legacy_responder) {
+    if (!legacy_responder) {
+        return false;
+    }
+    *legacy_responder = {};
+    if (!convertHidlWifiChannelInfoToLegacy(hidl_responder.channel, &legacy_responder->channel)) {
+        return false;
+    }
+    legacy_responder->preamble = convertHidlRttPreambleToLegacy(hidl_responder.preamble);
+    return true;
+}
+
+bool convertLegacyRttResponderToHidl(const legacy_hal::wifi_rtt_responder& legacy_responder,
+                                     V1_4::RttResponder* hidl_responder) {
+    if (!hidl_responder) {
+        return false;
+    }
+    *hidl_responder = {};
+    if (!convertLegacyWifiChannelInfoToHidl(legacy_responder.channel, &hidl_responder->channel)) {
+        return false;
+    }
+    hidl_responder->preamble = convertLegacyRttPreambleToHidl(legacy_responder.preamble);
+    return true;
+}
+
+bool convertLegacyRttCapabilitiesToHidl(
+        const legacy_hal::wifi_rtt_capabilities& legacy_capabilities,
+        V1_4::RttCapabilities* hidl_capabilities) {
+    if (!hidl_capabilities) {
+        return false;
+    }
+    *hidl_capabilities = {};
+    hidl_capabilities->rttOneSidedSupported = legacy_capabilities.rtt_one_sided_supported;
+    hidl_capabilities->rttFtmSupported = legacy_capabilities.rtt_ftm_supported;
+    hidl_capabilities->lciSupported = legacy_capabilities.lci_support;
+    hidl_capabilities->lcrSupported = legacy_capabilities.lcr_support;
+    hidl_capabilities->responderSupported = legacy_capabilities.responder_supported;
+    hidl_capabilities->preambleSupport = 0;
+    for (const auto flag : {legacy_hal::WIFI_RTT_PREAMBLE_LEGACY, legacy_hal::WIFI_RTT_PREAMBLE_HT,
+                            legacy_hal::WIFI_RTT_PREAMBLE_VHT, legacy_hal::WIFI_RTT_PREAMBLE_HE}) {
+        if (legacy_capabilities.preamble_support & flag) {
+            hidl_capabilities->preambleSupport |=
+                    static_cast<std::underlying_type<V1_4::RttPreamble>::type>(
+                            convertLegacyRttPreambleToHidl(flag));
+        }
+    }
+    hidl_capabilities->bwSupport = 0;
+    for (const auto flag :
+         {legacy_hal::WIFI_RTT_BW_5, legacy_hal::WIFI_RTT_BW_10, legacy_hal::WIFI_RTT_BW_20,
+          legacy_hal::WIFI_RTT_BW_40, legacy_hal::WIFI_RTT_BW_80, legacy_hal::WIFI_RTT_BW_160}) {
+        if (legacy_capabilities.bw_support & flag) {
+            hidl_capabilities->bwSupport |=
+                    static_cast<std::underlying_type<RttBw>::type>(convertLegacyRttBwToHidl(flag));
+        }
+    }
+    hidl_capabilities->mcVersion = legacy_capabilities.mc_version;
+    return true;
+}
+
+bool convertLegacyWifiRateInfoToHidl(const legacy_hal::wifi_rate& legacy_rate,
+                                     V1_4::WifiRateInfo* hidl_rate) {
+    if (!hidl_rate) {
+        return false;
+    }
+    *hidl_rate = {};
+    hidl_rate->preamble = convertLegacyWifiRatePreambleToHidl(legacy_rate.preamble);
+    hidl_rate->nss = convertLegacyWifiRateNssToHidl(legacy_rate.nss);
+    hidl_rate->bw = convertLegacyWifiChannelWidthToHidl(
+            static_cast<legacy_hal::wifi_channel_width>(legacy_rate.bw));
+    hidl_rate->rateMcsIdx = legacy_rate.rateMcsIdx;
+    hidl_rate->bitRateInKbps = legacy_rate.bitrate;
+    return true;
+}
+
+bool convertLegacyRttResultToHidl(const legacy_hal::wifi_rtt_result& legacy_result,
+                                  V1_4::RttResult* hidl_result) {
+    if (!hidl_result) {
+        return false;
+    }
+    *hidl_result = {};
+    CHECK(sizeof(legacy_result.addr) == hidl_result->addr.size());
+    memcpy(hidl_result->addr.data(), legacy_result.addr, sizeof(legacy_result.addr));
+    hidl_result->burstNum = legacy_result.burst_num;
+    hidl_result->measurementNumber = legacy_result.measurement_number;
+    hidl_result->successNumber = legacy_result.success_number;
+    hidl_result->numberPerBurstPeer = legacy_result.number_per_burst_peer;
+    hidl_result->status = convertLegacyRttStatusToHidl(legacy_result.status);
+    hidl_result->retryAfterDuration = legacy_result.retry_after_duration;
+    hidl_result->type = convertLegacyRttTypeToHidl(legacy_result.type);
+    hidl_result->rssi = legacy_result.rssi;
+    hidl_result->rssiSpread = legacy_result.rssi_spread;
+    if (!convertLegacyWifiRateInfoToHidl(legacy_result.tx_rate, &hidl_result->txRate)) {
+        return false;
+    }
+    if (!convertLegacyWifiRateInfoToHidl(legacy_result.rx_rate, &hidl_result->rxRate)) {
+        return false;
+    }
+    hidl_result->rtt = legacy_result.rtt;
+    hidl_result->rttSd = legacy_result.rtt_sd;
+    hidl_result->rttSpread = legacy_result.rtt_spread;
+    hidl_result->distanceInMm = legacy_result.distance_mm;
+    hidl_result->distanceSdInMm = legacy_result.distance_sd_mm;
+    hidl_result->distanceSpreadInMm = legacy_result.distance_spread_mm;
+    hidl_result->timeStampInUs = legacy_result.ts;
+    hidl_result->burstDurationInMs = legacy_result.burst_duration;
+    hidl_result->negotiatedBurstNum = legacy_result.negotiated_burst_num;
+    if (legacy_result.LCI && !convertLegacyIeToHidl(*legacy_result.LCI, &hidl_result->lci)) {
+        return false;
+    }
+    if (legacy_result.LCR && !convertLegacyIeToHidl(*legacy_result.LCR, &hidl_result->lcr)) {
+        return false;
+    }
+    return true;
+}
+
+bool convertLegacyVectorOfRttResultToHidl(
+        const std::vector<const legacy_hal::wifi_rtt_result*>& legacy_results,
+        std::vector<V1_4::RttResult>* hidl_results) {
+    if (!hidl_results) {
+        return false;
+    }
+    *hidl_results = {};
+    for (const auto legacy_result : legacy_results) {
+        V1_4::RttResult hidl_result;
+        if (!convertLegacyRttResultToHidl(*legacy_result, &hidl_result)) {
+            return false;
+        }
+        hidl_results->push_back(hidl_result);
+    }
+    return true;
+}
+
+legacy_hal::wifi_interface_type convertHidlIfaceTypeToLegacy(IfaceType hidl_interface_type) {
+    switch (hidl_interface_type) {
+        case IfaceType::STA:
+            return legacy_hal::WIFI_INTERFACE_TYPE_STA;
+        case IfaceType::AP:
+            return legacy_hal::WIFI_INTERFACE_TYPE_AP;
+        case IfaceType::P2P:
+            return legacy_hal::WIFI_INTERFACE_TYPE_P2P;
+        case IfaceType::NAN:
+            return legacy_hal::WIFI_INTERFACE_TYPE_NAN;
+    }
+    CHECK(false);
+}
+
+legacy_hal::wifi_multi_sta_use_case convertHidlMultiStaUseCaseToLegacy(
+        V1_5::IWifiChip::MultiStaUseCase use_case) {
+    switch (use_case) {
+        case V1_5::IWifiChip::MultiStaUseCase::DUAL_STA_TRANSIENT_PREFER_PRIMARY:
+            return legacy_hal::WIFI_DUAL_STA_TRANSIENT_PREFER_PRIMARY;
+        case V1_5::IWifiChip::MultiStaUseCase::DUAL_STA_NON_TRANSIENT_UNBIASED:
+            return legacy_hal::WIFI_DUAL_STA_NON_TRANSIENT_UNBIASED;
+    }
+    CHECK(false);
+}
+
+bool convertHidlCoexUnsafeChannelToLegacy(
+        const V1_5::IWifiChip::CoexUnsafeChannel& hidl_unsafe_channel,
+        legacy_hal::wifi_coex_unsafe_channel* legacy_unsafe_channel) {
+    if (!legacy_unsafe_channel) {
+        return false;
+    }
+    *legacy_unsafe_channel = {};
+    switch (hidl_unsafe_channel.band) {
+        case V1_5::WifiBand::BAND_24GHZ:
+            legacy_unsafe_channel->band = legacy_hal::WLAN_MAC_2_4_BAND;
+            break;
+        case V1_5::WifiBand::BAND_5GHZ:
+            legacy_unsafe_channel->band = legacy_hal::WLAN_MAC_5_0_BAND;
+            break;
+        default:
+            return false;
+    };
+    legacy_unsafe_channel->channel = hidl_unsafe_channel.channel;
+    legacy_unsafe_channel->power_cap_dbm = hidl_unsafe_channel.powerCapDbm;
+    return true;
+}
+
+bool convertHidlVectorOfCoexUnsafeChannelToLegacy(
+        const std::vector<V1_5::IWifiChip::CoexUnsafeChannel>& hidl_unsafe_channels,
+        std::vector<legacy_hal::wifi_coex_unsafe_channel>* legacy_unsafe_channels) {
+    if (!legacy_unsafe_channels) {
+        return false;
+    }
+    *legacy_unsafe_channels = {};
+    for (const auto& hidl_unsafe_channel : hidl_unsafe_channels) {
+        legacy_hal::wifi_coex_unsafe_channel legacy_unsafe_channel;
+        if (!hidl_struct_util::convertHidlCoexUnsafeChannelToLegacy(hidl_unsafe_channel,
+                                                                    &legacy_unsafe_channel)) {
+            return false;
+        }
+        legacy_unsafe_channels->push_back(legacy_unsafe_channel);
+    }
+    return true;
+}
+
+}  // namespace hidl_struct_util
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.6/default/hidl_struct_util.h b/wifi/1.6/default/hidl_struct_util.h
new file mode 100644
index 0000000..15a3205
--- /dev/null
+++ b/wifi/1.6/default/hidl_struct_util.h
@@ -0,0 +1,200 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef HIDL_STRUCT_UTIL_H_
+#define HIDL_STRUCT_UTIL_H_
+
+#include <vector>
+
+#include <android/hardware/wifi/1.0/IWifiChip.h>
+#include <android/hardware/wifi/1.0/types.h>
+#include <android/hardware/wifi/1.2/types.h>
+#include <android/hardware/wifi/1.3/types.h>
+#include <android/hardware/wifi/1.4/IWifiChipEventCallback.h>
+#include <android/hardware/wifi/1.4/types.h>
+#include <android/hardware/wifi/1.5/IWifiChip.h>
+#include <android/hardware/wifi/1.5/types.h>
+
+#include "wifi_legacy_hal.h"
+
+/**
+ * This file contains a bunch of functions to convert structs from the legacy
+ * HAL to HIDL and vice versa.
+ * TODO(b/32093047): Add unit tests for these conversion methods in the VTS test
+ * suite.
+ */
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+namespace hidl_struct_util {
+using namespace android::hardware::wifi::V1_0;
+
+// Chip conversion methods.
+bool convertLegacyFeaturesToHidlChipCapabilities(uint64_t legacy_feature_set,
+                                                 uint32_t legacy_logger_feature_set,
+                                                 uint32_t* hidl_caps);
+bool convertLegacyDebugRingBufferStatusToHidl(
+        const legacy_hal::wifi_ring_buffer_status& legacy_status,
+        WifiDebugRingBufferStatus* hidl_status);
+bool convertLegacyVectorOfDebugRingBufferStatusToHidl(
+        const std::vector<legacy_hal::wifi_ring_buffer_status>& legacy_status_vec,
+        std::vector<WifiDebugRingBufferStatus>* hidl_status_vec);
+bool convertLegacyWakeReasonStatsToHidl(const legacy_hal::WakeReasonStats& legacy_stats,
+                                        WifiDebugHostWakeReasonStats* hidl_stats);
+legacy_hal::wifi_power_scenario convertHidlTxPowerScenarioToLegacy(
+        V1_1::IWifiChip::TxPowerScenario hidl_scenario);
+legacy_hal::wifi_latency_mode convertHidlLatencyModeToLegacy(
+        V1_3::IWifiChip::LatencyMode hidl_latency_mode);
+legacy_hal::wifi_power_scenario convertHidlTxPowerScenarioToLegacy_1_2(
+        V1_2::IWifiChip::TxPowerScenario hidl_scenario);
+bool convertLegacyWifiMacInfosToHidl(
+        const std::vector<legacy_hal::WifiMacInfo>& legacy_mac_infos,
+        std::vector<V1_4::IWifiChipEventCallback::RadioModeInfo>* hidl_radio_mode_infos);
+legacy_hal::wifi_interface_type convertHidlIfaceTypeToLegacy(IfaceType hidl_interface_type);
+legacy_hal::wifi_multi_sta_use_case convertHidlMultiStaUseCaseToLegacy(
+        V1_5::IWifiChip::MultiStaUseCase use_case);
+bool convertHidlCoexUnsafeChannelToLegacy(
+        const V1_5::IWifiChip::CoexUnsafeChannel& hidl_unsafe_channel,
+        legacy_hal::wifi_coex_unsafe_channel* legacy_unsafe_channel);
+bool convertHidlVectorOfCoexUnsafeChannelToLegacy(
+        const std::vector<V1_5::IWifiChip::CoexUnsafeChannel>& hidl_unsafe_channels,
+        std::vector<legacy_hal::wifi_coex_unsafe_channel>* legacy_unsafe_channels);
+
+// STA iface conversion methods.
+bool convertLegacyFeaturesToHidlStaCapabilities(uint64_t legacy_feature_set,
+                                                uint32_t legacy_logger_feature_set,
+                                                uint32_t* hidl_caps);
+bool convertLegacyApfCapabilitiesToHidl(const legacy_hal::PacketFilterCapabilities& legacy_caps,
+                                        StaApfPacketFilterCapabilities* hidl_caps);
+bool convertLegacyGscanCapabilitiesToHidl(const legacy_hal::wifi_gscan_capabilities& legacy_caps,
+                                          StaBackgroundScanCapabilities* hidl_caps);
+legacy_hal::wifi_band convertHidlWifiBandToLegacy(V1_0::WifiBand band);
+bool convertHidlGscanParamsToLegacy(const StaBackgroundScanParameters& hidl_scan_params,
+                                    legacy_hal::wifi_scan_cmd_params* legacy_scan_params);
+// |has_ie_data| indicates whether or not the wifi_scan_result includes 802.11
+// Information Elements (IEs)
+bool convertLegacyGscanResultToHidl(const legacy_hal::wifi_scan_result& legacy_scan_result,
+                                    bool has_ie_data, StaScanResult* hidl_scan_result);
+// |cached_results| is assumed to not include IEs.
+bool convertLegacyVectorOfCachedGscanResultsToHidl(
+        const std::vector<legacy_hal::wifi_cached_scan_results>& legacy_cached_scan_results,
+        std::vector<StaScanData>* hidl_scan_datas);
+bool convertLegacyLinkLayerStatsToHidl(const legacy_hal::LinkLayerStats& legacy_stats,
+                                       V1_5::StaLinkLayerStats* hidl_stats);
+bool convertLegacyRoamingCapabilitiesToHidl(
+        const legacy_hal::wifi_roaming_capabilities& legacy_caps,
+        StaRoamingCapabilities* hidl_caps);
+bool convertHidlRoamingConfigToLegacy(const StaRoamingConfig& hidl_config,
+                                      legacy_hal::wifi_roaming_config* legacy_config);
+legacy_hal::fw_roaming_state_t convertHidlRoamingStateToLegacy(StaRoamingState state);
+bool convertLegacyVectorOfDebugTxPacketFateToHidl(
+        const std::vector<legacy_hal::wifi_tx_report>& legacy_fates,
+        std::vector<WifiDebugTxPacketFateReport>* hidl_fates);
+bool convertLegacyVectorOfDebugRxPacketFateToHidl(
+        const std::vector<legacy_hal::wifi_rx_report>& legacy_fates,
+        std::vector<WifiDebugRxPacketFateReport>* hidl_fates);
+
+// NAN iface conversion methods.
+void convertToWifiNanStatus(legacy_hal::NanStatusType type, const char* str, size_t max_len,
+                            WifiNanStatus* wifiNanStatus);
+bool convertHidlNanEnableRequestToLegacy(const V1_4::NanEnableRequest& hidl_request,
+                                         legacy_hal::NanEnableRequest* legacy_request);
+bool convertHidlNanConfigRequestToLegacy(const V1_4::NanConfigRequest& hidl_request,
+                                         legacy_hal::NanConfigRequest* legacy_request);
+bool convertHidlNanEnableRequest_1_4ToLegacy(
+        const V1_4::NanEnableRequest& hidl_request1,
+        const V1_5::NanConfigRequestSupplemental& hidl_request2,
+        legacy_hal::NanEnableRequest* legacy_request);
+bool convertHidlNanConfigRequest_1_4ToLegacy(
+        const V1_4::NanConfigRequest& hidl_request1,
+        const V1_5::NanConfigRequestSupplemental& hidl_request2,
+        legacy_hal::NanConfigRequest* legacy_request);
+bool convertHidlNanEnableRequest_1_5ToLegacy(
+        const V1_4::NanEnableRequest& hidl_request1,
+        const V1_5::NanConfigRequestSupplemental& hidl_request2,
+        legacy_hal::NanEnableRequest* legacy_request);
+bool convertHidlNanConfigRequest_1_5ToLegacy(
+        const V1_4::NanConfigRequest& hidl_request1,
+        const V1_5::NanConfigRequestSupplemental& hidl_request2,
+        legacy_hal::NanConfigRequest* legacy_request);
+bool convertHidlNanPublishRequestToLegacy(const NanPublishRequest& hidl_request,
+                                          legacy_hal::NanPublishRequest* legacy_request);
+bool convertHidlNanSubscribeRequestToLegacy(const NanSubscribeRequest& hidl_request,
+                                            legacy_hal::NanSubscribeRequest* legacy_request);
+bool convertHidlNanTransmitFollowupRequestToLegacy(
+        const NanTransmitFollowupRequest& hidl_request,
+        legacy_hal::NanTransmitFollowupRequest* legacy_request);
+bool convertHidlNanDataPathInitiatorRequestToLegacy(
+        const NanInitiateDataPathRequest& hidl_request,
+        legacy_hal::NanDataPathInitiatorRequest* legacy_request);
+bool convertHidlNanDataPathIndicationResponseToLegacy(
+        const NanRespondToDataPathIndicationRequest& hidl_response,
+        legacy_hal::NanDataPathIndicationResponse* legacy_response);
+bool convertLegacyNanResponseHeaderToHidl(const legacy_hal::NanResponseMsg& legacy_response,
+                                          WifiNanStatus* wifiNanStatus);
+bool convertLegacyNanCapabilitiesResponseToHidl(const legacy_hal::NanCapabilities& legacy_response,
+                                                V1_5::NanCapabilities* hidl_response);
+bool convertLegacyNanMatchIndToHidl(const legacy_hal::NanMatchInd& legacy_ind,
+                                    NanMatchInd* hidl_ind);
+bool convertLegacyNanFollowupIndToHidl(const legacy_hal::NanFollowupInd& legacy_ind,
+                                       NanFollowupReceivedInd* hidl_ind);
+bool convertLegacyNanDataPathRequestIndToHidl(const legacy_hal::NanDataPathRequestInd& legacy_ind,
+                                              NanDataPathRequestInd* hidl_ind);
+bool convertLegacyNanDataPathConfirmIndToHidl(const legacy_hal::NanDataPathConfirmInd& legacy_ind,
+                                              V1_2::NanDataPathConfirmInd* hidl_ind);
+bool convertLegacyNanDataPathScheduleUpdateIndToHidl(
+        const legacy_hal::NanDataPathScheduleUpdateInd& legacy_ind,
+        V1_2::NanDataPathScheduleUpdateInd* hidl_ind);
+
+// RTT controller conversion methods.
+bool convertHidlVectorOfRttConfigToLegacy(const std::vector<V1_4::RttConfig>& hidl_configs,
+                                          std::vector<legacy_hal::wifi_rtt_config>* legacy_configs);
+bool convertHidlRttLciInformationToLegacy(const RttLciInformation& hidl_info,
+                                          legacy_hal::wifi_lci_information* legacy_info);
+bool convertHidlRttLcrInformationToLegacy(const RttLcrInformation& hidl_info,
+                                          legacy_hal::wifi_lcr_information* legacy_info);
+bool convertHidlRttResponderToLegacy(const V1_4::RttResponder& hidl_responder,
+                                     legacy_hal::wifi_rtt_responder* legacy_responder);
+bool convertHidlWifiChannelInfoToLegacy(const WifiChannelInfo& hidl_info,
+                                        legacy_hal::wifi_channel_info* legacy_info);
+bool convertLegacyRttResponderToHidl(const legacy_hal::wifi_rtt_responder& legacy_responder,
+                                     V1_4::RttResponder* hidl_responder);
+bool convertLegacyRttCapabilitiesToHidl(
+        const legacy_hal::wifi_rtt_capabilities& legacy_capabilities,
+        V1_4::RttCapabilities* hidl_capabilities);
+bool convertLegacyVectorOfRttResultToHidl(
+        const std::vector<const legacy_hal::wifi_rtt_result*>& legacy_results,
+        std::vector<V1_4::RttResult>* hidl_results);
+uint32_t convertHidlWifiBandToLegacyMacBand(V1_5::WifiBand band);
+uint32_t convertHidlWifiIfaceModeToLegacy(uint32_t hidl_iface_mask);
+uint32_t convertHidlUsableChannelFilterToLegacy(uint32_t hidl_filter_mask);
+bool convertLegacyWifiUsableChannelsToHidl(
+        const std::vector<legacy_hal::wifi_usable_channel>& legacy_usable_channels,
+        std::vector<V1_5::WifiUsableChannel>* hidl_usable_channels);
+bool convertLegacyPeerInfoStatsToHidl(const legacy_hal::WifiPeerInfo& legacy_peer_info_stats,
+                                      V1_5::StaPeerInfo* hidl_peer_info_stats);
+bool convertLegacyWifiRateInfoToHidl(const legacy_hal::wifi_rate& legacy_rate,
+                                     V1_4::WifiRateInfo* hidl_rate);
+}  // namespace hidl_struct_util
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // HIDL_STRUCT_UTIL_H_
diff --git a/wifi/1.6/default/hidl_sync_util.cpp b/wifi/1.6/default/hidl_sync_util.cpp
new file mode 100644
index 0000000..358d95e
--- /dev/null
+++ b/wifi/1.6/default/hidl_sync_util.cpp
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "hidl_sync_util.h"
+
+namespace {
+std::recursive_mutex g_mutex;
+}  // namespace
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+namespace hidl_sync_util {
+
+std::unique_lock<std::recursive_mutex> acquireGlobalLock() {
+    return std::unique_lock<std::recursive_mutex>{g_mutex};
+}
+
+}  // namespace hidl_sync_util
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.6/default/hidl_sync_util.h b/wifi/1.6/default/hidl_sync_util.h
new file mode 100644
index 0000000..2c1c37b
--- /dev/null
+++ b/wifi/1.6/default/hidl_sync_util.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef HIDL_SYNC_UTIL_H_
+#define HIDL_SYNC_UTIL_H_
+
+#include <mutex>
+
+// Utility that provides a global lock to synchronize access between
+// the HIDL thread and the legacy HAL's event loop.
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+namespace hidl_sync_util {
+std::unique_lock<std::recursive_mutex> acquireGlobalLock();
+}  // namespace hidl_sync_util
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+#endif  // HIDL_SYNC_UTIL_H_
diff --git a/wifi/1.6/default/ringbuffer.cpp b/wifi/1.6/default/ringbuffer.cpp
new file mode 100644
index 0000000..6d4ed84
--- /dev/null
+++ b/wifi/1.6/default/ringbuffer.cpp
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+
+#include "ringbuffer.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+
+Ringbuffer::Ringbuffer(size_t maxSize) : size_(0), maxSize_(maxSize) {}
+
+void Ringbuffer::append(const std::vector<uint8_t>& input) {
+    if (input.size() == 0) {
+        return;
+    }
+    if (input.size() > maxSize_) {
+        LOG(INFO) << "Oversized message of " << input.size() << " bytes is dropped";
+        return;
+    }
+    data_.push_back(input);
+    size_ += input.size() * sizeof(input[0]);
+    while (size_ > maxSize_) {
+        size_ -= data_.front().size() * sizeof(data_.front()[0]);
+        data_.pop_front();
+    }
+}
+
+const std::list<std::vector<uint8_t>>& Ringbuffer::getData() const {
+    return data_;
+}
+
+void Ringbuffer::clear() {
+    data_.clear();
+    size_ = 0;
+}
+
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.6/default/ringbuffer.h b/wifi/1.6/default/ringbuffer.h
new file mode 100644
index 0000000..8571a9f
--- /dev/null
+++ b/wifi/1.6/default/ringbuffer.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef RINGBUFFER_H_
+#define RINGBUFFER_H_
+
+#include <list>
+#include <vector>
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+
+/**
+ * Ringbuffer object used to store debug data.
+ */
+class Ringbuffer {
+  public:
+    explicit Ringbuffer(size_t maxSize);
+
+    // Appends the data buffer and deletes from the front until buffer is
+    // within |maxSize_|.
+    void append(const std::vector<uint8_t>& input);
+    const std::list<std::vector<uint8_t>>& getData() const;
+    void clear();
+
+  private:
+    std::list<std::vector<uint8_t>> data_;
+    size_t size_;
+    size_t maxSize_;
+};
+
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // RINGBUFFER_H_
diff --git a/wifi/1.6/default/service.cpp b/wifi/1.6/default/service.cpp
new file mode 100644
index 0000000..c874d8b
--- /dev/null
+++ b/wifi/1.6/default/service.cpp
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <hidl/HidlLazyUtils.h>
+#include <hidl/HidlTransportSupport.h>
+#include <signal.h>
+#include <utils/Looper.h>
+#include <utils/StrongPointer.h>
+
+#include "wifi.h"
+#include "wifi_feature_flags.h"
+#include "wifi_legacy_hal.h"
+#include "wifi_legacy_hal_factory.h"
+#include "wifi_mode_controller.h"
+
+using android::hardware::configureRpcThreadpool;
+using android::hardware::joinRpcThreadpool;
+using android::hardware::LazyServiceRegistrar;
+using android::hardware::wifi::V1_6::implementation::feature_flags::WifiFeatureFlags;
+using android::hardware::wifi::V1_6::implementation::legacy_hal::WifiLegacyHal;
+using android::hardware::wifi::V1_6::implementation::legacy_hal::WifiLegacyHalFactory;
+using android::hardware::wifi::V1_6::implementation::mode_controller::WifiModeController;
+
+#ifdef LAZY_SERVICE
+const bool kLazyService = true;
+#else
+const bool kLazyService = false;
+#endif
+
+int main(int /*argc*/, char** argv) {
+    signal(SIGPIPE, SIG_IGN);
+    android::base::InitLogging(argv, android::base::LogdLogger(android::base::SYSTEM));
+    LOG(INFO) << "Wifi Hal is booting up...";
+
+    configureRpcThreadpool(1, true /* callerWillJoin */);
+
+    const auto iface_tool = std::make_shared<android::wifi_system::InterfaceTool>();
+    const auto legacy_hal_factory = std::make_shared<WifiLegacyHalFactory>(iface_tool);
+
+    // Setup hwbinder service
+    android::sp<android::hardware::wifi::V1_6::IWifi> service =
+            new android::hardware::wifi::V1_6::implementation::Wifi(
+                    iface_tool, legacy_hal_factory, std::make_shared<WifiModeController>(),
+                    std::make_shared<WifiFeatureFlags>());
+    if (kLazyService) {
+        auto registrar = LazyServiceRegistrar::getInstance();
+        CHECK_EQ(registrar.registerService(service), android::NO_ERROR)
+                << "Failed to register wifi HAL";
+    } else {
+        CHECK_EQ(service->registerAsService(), android::NO_ERROR) << "Failed to register wifi HAL";
+    }
+
+    joinRpcThreadpool();
+
+    LOG(INFO) << "Wifi Hal is terminating...";
+    return 0;
+}
diff --git a/wifi/1.6/default/tests/hidl_struct_util_unit_tests.cpp b/wifi/1.6/default/tests/hidl_struct_util_unit_tests.cpp
new file mode 100644
index 0000000..1182a58
--- /dev/null
+++ b/wifi/1.6/default/tests/hidl_struct_util_unit_tests.cpp
@@ -0,0 +1,385 @@
+/*
+ * Copyright (C) 2017, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android-base/macros.h>
+#include <gmock/gmock.h>
+
+#undef NAN
+#include "hidl_struct_util.h"
+
+using testing::Test;
+
+namespace {
+constexpr uint32_t kMacId1 = 1;
+constexpr uint32_t kMacId2 = 2;
+constexpr uint32_t kIfaceChannel1 = 3;
+constexpr uint32_t kIfaceChannel2 = 5;
+constexpr char kIfaceName1[] = "wlan0";
+constexpr char kIfaceName2[] = "wlan1";
+}  // namespace
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+using namespace android::hardware::wifi::V1_0;
+using ::android::hardware::wifi::V1_0::WifiChannelWidthInMhz;
+
+class HidlStructUtilTest : public Test {};
+
+TEST_F(HidlStructUtilTest, CanConvertLegacyWifiMacInfosToHidlWithOneMac) {
+    std::vector<legacy_hal::WifiMacInfo> legacy_mac_infos;
+    legacy_hal::WifiMacInfo legacy_mac_info1 = {
+            .wlan_mac_id = kMacId1,
+            .mac_band = legacy_hal::WLAN_MAC_5_0_BAND | legacy_hal::WLAN_MAC_2_4_BAND};
+    legacy_hal::WifiIfaceInfo legacy_iface_info1 = {.name = kIfaceName1, .channel = kIfaceChannel1};
+    legacy_hal::WifiIfaceInfo legacy_iface_info2 = {.name = kIfaceName2, .channel = kIfaceChannel2};
+    legacy_mac_info1.iface_infos.push_back(legacy_iface_info1);
+    legacy_mac_info1.iface_infos.push_back(legacy_iface_info2);
+    legacy_mac_infos.push_back(legacy_mac_info1);
+
+    std::vector<V1_4::IWifiChipEventCallback::RadioModeInfo> hidl_radio_mode_infos;
+    ASSERT_TRUE(hidl_struct_util::convertLegacyWifiMacInfosToHidl(legacy_mac_infos,
+                                                                  &hidl_radio_mode_infos));
+
+    ASSERT_EQ(1u, hidl_radio_mode_infos.size());
+    auto hidl_radio_mode_info1 = hidl_radio_mode_infos[0];
+    EXPECT_EQ(legacy_mac_info1.wlan_mac_id, hidl_radio_mode_info1.radioId);
+    EXPECT_EQ(V1_4::WifiBand::BAND_24GHZ_5GHZ, hidl_radio_mode_info1.bandInfo);
+    ASSERT_EQ(2u, hidl_radio_mode_info1.ifaceInfos.size());
+    auto hidl_iface_info1 = hidl_radio_mode_info1.ifaceInfos[0];
+    EXPECT_EQ(legacy_iface_info1.name, hidl_iface_info1.name);
+    EXPECT_EQ(static_cast<uint32_t>(legacy_iface_info1.channel), hidl_iface_info1.channel);
+    auto hidl_iface_info2 = hidl_radio_mode_info1.ifaceInfos[1];
+    EXPECT_EQ(legacy_iface_info2.name, hidl_iface_info2.name);
+    EXPECT_EQ(static_cast<uint32_t>(legacy_iface_info2.channel), hidl_iface_info2.channel);
+}
+
+TEST_F(HidlStructUtilTest, CanConvertLegacyWifiMacInfosToHidlWithTwoMac) {
+    std::vector<legacy_hal::WifiMacInfo> legacy_mac_infos;
+    legacy_hal::WifiMacInfo legacy_mac_info1 = {.wlan_mac_id = kMacId1,
+                                                .mac_band = legacy_hal::WLAN_MAC_5_0_BAND};
+    legacy_hal::WifiIfaceInfo legacy_iface_info1 = {.name = kIfaceName1, .channel = kIfaceChannel1};
+    legacy_hal::WifiMacInfo legacy_mac_info2 = {.wlan_mac_id = kMacId2,
+                                                .mac_band = legacy_hal::WLAN_MAC_2_4_BAND};
+    legacy_hal::WifiIfaceInfo legacy_iface_info2 = {.name = kIfaceName2, .channel = kIfaceChannel2};
+    legacy_mac_info1.iface_infos.push_back(legacy_iface_info1);
+    legacy_mac_infos.push_back(legacy_mac_info1);
+    legacy_mac_info2.iface_infos.push_back(legacy_iface_info2);
+    legacy_mac_infos.push_back(legacy_mac_info2);
+
+    std::vector<V1_4::IWifiChipEventCallback::RadioModeInfo> hidl_radio_mode_infos;
+    ASSERT_TRUE(hidl_struct_util::convertLegacyWifiMacInfosToHidl(legacy_mac_infos,
+                                                                  &hidl_radio_mode_infos));
+
+    ASSERT_EQ(2u, hidl_radio_mode_infos.size());
+
+    // Find mac info 1.
+    const auto hidl_radio_mode_info1 =
+            std::find_if(hidl_radio_mode_infos.begin(), hidl_radio_mode_infos.end(),
+                         [&legacy_mac_info1](const V1_4::IWifiChipEventCallback::RadioModeInfo& x) {
+                             return x.radioId == legacy_mac_info1.wlan_mac_id;
+                         });
+    ASSERT_NE(hidl_radio_mode_infos.end(), hidl_radio_mode_info1);
+    EXPECT_EQ(V1_4::WifiBand::BAND_5GHZ, hidl_radio_mode_info1->bandInfo);
+    ASSERT_EQ(1u, hidl_radio_mode_info1->ifaceInfos.size());
+    auto hidl_iface_info1 = hidl_radio_mode_info1->ifaceInfos[0];
+    EXPECT_EQ(legacy_iface_info1.name, hidl_iface_info1.name);
+    EXPECT_EQ(static_cast<uint32_t>(legacy_iface_info1.channel), hidl_iface_info1.channel);
+
+    // Find mac info 2.
+    const auto hidl_radio_mode_info2 =
+            std::find_if(hidl_radio_mode_infos.begin(), hidl_radio_mode_infos.end(),
+                         [&legacy_mac_info2](const V1_4::IWifiChipEventCallback::RadioModeInfo& x) {
+                             return x.radioId == legacy_mac_info2.wlan_mac_id;
+                         });
+    ASSERT_NE(hidl_radio_mode_infos.end(), hidl_radio_mode_info2);
+    EXPECT_EQ(V1_4::WifiBand::BAND_24GHZ, hidl_radio_mode_info2->bandInfo);
+    ASSERT_EQ(1u, hidl_radio_mode_info2->ifaceInfos.size());
+    auto hidl_iface_info2 = hidl_radio_mode_info2->ifaceInfos[0];
+    EXPECT_EQ(legacy_iface_info2.name, hidl_iface_info2.name);
+    EXPECT_EQ(static_cast<uint32_t>(legacy_iface_info2.channel), hidl_iface_info2.channel);
+}
+
+TEST_F(HidlStructUtilTest, canConvertLegacyLinkLayerStatsToHidl) {
+    legacy_hal::LinkLayerStats legacy_stats{};
+    legacy_stats.radios.push_back(legacy_hal::LinkLayerRadioStats{});
+    legacy_stats.radios.push_back(legacy_hal::LinkLayerRadioStats{});
+    legacy_stats.peers.push_back(legacy_hal::WifiPeerInfo{});
+    legacy_stats.peers.push_back(legacy_hal::WifiPeerInfo{});
+    legacy_stats.iface.beacon_rx = rand();
+    legacy_stats.iface.rssi_mgmt = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].rx_mpdu = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].tx_mpdu = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].mpdu_lost = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].retries = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].contention_time_min = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].contention_time_max = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].contention_time_avg = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].contention_num_samples = rand();
+
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].rx_mpdu = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].tx_mpdu = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].mpdu_lost = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].retries = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].contention_time_min = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].contention_time_max = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].contention_time_avg = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].contention_num_samples = rand();
+
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].rx_mpdu = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].tx_mpdu = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].mpdu_lost = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].retries = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].contention_time_min = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].contention_time_max = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].contention_time_avg = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].contention_num_samples = rand();
+
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].rx_mpdu = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].tx_mpdu = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].mpdu_lost = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].retries = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].contention_time_min = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].contention_time_max = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].contention_time_avg = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].contention_num_samples = rand();
+
+    legacy_stats.iface.info.time_slicing_duty_cycle_percent = rand();
+    legacy_stats.iface.num_peers = 1;
+
+    for (auto& radio : legacy_stats.radios) {
+        radio.stats.radio = rand();
+        radio.stats.on_time = rand();
+        radio.stats.tx_time = rand();
+        radio.stats.rx_time = rand();
+        radio.stats.on_time_scan = rand();
+        radio.stats.on_time_nbd = rand();
+        radio.stats.on_time_gscan = rand();
+        radio.stats.on_time_roam_scan = rand();
+        radio.stats.on_time_pno_scan = rand();
+        radio.stats.on_time_hs20 = rand();
+        for (int i = 0; i < 4; i++) {
+            radio.tx_time_per_levels.push_back(rand());
+        }
+
+        legacy_hal::wifi_channel_stat channel_stat1 = {
+                .channel = {legacy_hal::WIFI_CHAN_WIDTH_20, 2437, 2437, 0},
+                .on_time = 0x1111,
+                .cca_busy_time = 0x55,
+        };
+        legacy_hal::wifi_channel_stat channel_stat2 = {
+                .channel = {legacy_hal::WIFI_CHAN_WIDTH_20, 5180, 5180, 0},
+                .on_time = 0x2222,
+                .cca_busy_time = 0x66,
+        };
+        radio.channel_stats.push_back(channel_stat1);
+        radio.channel_stats.push_back(channel_stat2);
+    }
+
+    for (auto& peer : legacy_stats.peers) {
+        peer.peer_info.bssload.sta_count = rand();
+        peer.peer_info.bssload.chan_util = rand();
+        wifi_rate_stat rate_stat1 = {
+                .rate = {3, 1, 2, 5, 0, 0},
+                .tx_mpdu = 0,
+                .rx_mpdu = 1,
+                .mpdu_lost = 2,
+                .retries = 3,
+                .retries_short = 4,
+                .retries_long = 5,
+        };
+        wifi_rate_stat rate_stat2 = {
+                .rate = {2, 2, 1, 6, 0, 1},
+                .tx_mpdu = 6,
+                .rx_mpdu = 7,
+                .mpdu_lost = 8,
+                .retries = 9,
+                .retries_short = 10,
+                .retries_long = 11,
+        };
+        peer.rate_stats.push_back(rate_stat1);
+        peer.rate_stats.push_back(rate_stat2);
+    }
+
+    V1_5::StaLinkLayerStats converted{};
+    hidl_struct_util::convertLegacyLinkLayerStatsToHidl(legacy_stats, &converted);
+    EXPECT_EQ(legacy_stats.iface.beacon_rx, converted.iface.V1_0.beaconRx);
+    EXPECT_EQ(legacy_stats.iface.rssi_mgmt, converted.iface.V1_0.avgRssiMgmt);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].rx_mpdu,
+              converted.iface.V1_0.wmeBePktStats.rxMpdu);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].tx_mpdu,
+              converted.iface.V1_0.wmeBePktStats.txMpdu);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].mpdu_lost,
+              converted.iface.V1_0.wmeBePktStats.lostMpdu);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].retries,
+              converted.iface.V1_0.wmeBePktStats.retries);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].contention_time_min,
+              converted.iface.wmeBeContentionTimeStats.contentionTimeMinInUsec);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].contention_time_max,
+              converted.iface.wmeBeContentionTimeStats.contentionTimeMaxInUsec);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].contention_time_avg,
+              converted.iface.wmeBeContentionTimeStats.contentionTimeAvgInUsec);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].contention_num_samples,
+              converted.iface.wmeBeContentionTimeStats.contentionNumSamples);
+
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].rx_mpdu,
+              converted.iface.V1_0.wmeBkPktStats.rxMpdu);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].tx_mpdu,
+              converted.iface.V1_0.wmeBkPktStats.txMpdu);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].mpdu_lost,
+              converted.iface.V1_0.wmeBkPktStats.lostMpdu);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].retries,
+              converted.iface.V1_0.wmeBkPktStats.retries);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].contention_time_min,
+              converted.iface.wmeBkContentionTimeStats.contentionTimeMinInUsec);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].contention_time_max,
+              converted.iface.wmeBkContentionTimeStats.contentionTimeMaxInUsec);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].contention_time_avg,
+              converted.iface.wmeBkContentionTimeStats.contentionTimeAvgInUsec);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].contention_num_samples,
+              converted.iface.wmeBkContentionTimeStats.contentionNumSamples);
+
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].rx_mpdu,
+              converted.iface.V1_0.wmeViPktStats.rxMpdu);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].tx_mpdu,
+              converted.iface.V1_0.wmeViPktStats.txMpdu);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].mpdu_lost,
+              converted.iface.V1_0.wmeViPktStats.lostMpdu);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].retries,
+              converted.iface.V1_0.wmeViPktStats.retries);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].contention_time_min,
+              converted.iface.wmeViContentionTimeStats.contentionTimeMinInUsec);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].contention_time_max,
+              converted.iface.wmeViContentionTimeStats.contentionTimeMaxInUsec);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].contention_time_avg,
+              converted.iface.wmeViContentionTimeStats.contentionTimeAvgInUsec);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].contention_num_samples,
+              converted.iface.wmeViContentionTimeStats.contentionNumSamples);
+
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].rx_mpdu,
+              converted.iface.V1_0.wmeVoPktStats.rxMpdu);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].tx_mpdu,
+              converted.iface.V1_0.wmeVoPktStats.txMpdu);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].mpdu_lost,
+              converted.iface.V1_0.wmeVoPktStats.lostMpdu);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].retries,
+              converted.iface.V1_0.wmeVoPktStats.retries);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].contention_time_min,
+              converted.iface.wmeVoContentionTimeStats.contentionTimeMinInUsec);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].contention_time_max,
+              converted.iface.wmeVoContentionTimeStats.contentionTimeMaxInUsec);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].contention_time_avg,
+              converted.iface.wmeVoContentionTimeStats.contentionTimeAvgInUsec);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].contention_num_samples,
+              converted.iface.wmeVoContentionTimeStats.contentionNumSamples);
+
+    EXPECT_EQ(legacy_stats.iface.info.time_slicing_duty_cycle_percent,
+              converted.iface.timeSliceDutyCycleInPercent);
+
+    EXPECT_EQ(legacy_stats.radios.size(), converted.radios.size());
+    for (size_t i = 0; i < legacy_stats.radios.size(); i++) {
+        EXPECT_EQ(legacy_stats.radios[i].stats.radio, converted.radios[i].radioId);
+        EXPECT_EQ(legacy_stats.radios[i].stats.on_time, converted.radios[i].V1_3.V1_0.onTimeInMs);
+        EXPECT_EQ(legacy_stats.radios[i].stats.tx_time, converted.radios[i].V1_3.V1_0.txTimeInMs);
+        EXPECT_EQ(legacy_stats.radios[i].stats.rx_time, converted.radios[i].V1_3.V1_0.rxTimeInMs);
+        EXPECT_EQ(legacy_stats.radios[i].stats.on_time_scan,
+                  converted.radios[i].V1_3.V1_0.onTimeInMsForScan);
+        EXPECT_EQ(legacy_stats.radios[i].tx_time_per_levels.size(),
+                  converted.radios[i].V1_3.V1_0.txTimeInMsPerLevel.size());
+        for (size_t j = 0; j < legacy_stats.radios[i].tx_time_per_levels.size(); j++) {
+            EXPECT_EQ(legacy_stats.radios[i].tx_time_per_levels[j],
+                      converted.radios[i].V1_3.V1_0.txTimeInMsPerLevel[j]);
+        }
+        EXPECT_EQ(legacy_stats.radios[i].stats.on_time_nbd,
+                  converted.radios[i].V1_3.onTimeInMsForNanScan);
+        EXPECT_EQ(legacy_stats.radios[i].stats.on_time_gscan,
+                  converted.radios[i].V1_3.onTimeInMsForBgScan);
+        EXPECT_EQ(legacy_stats.radios[i].stats.on_time_roam_scan,
+                  converted.radios[i].V1_3.onTimeInMsForRoamScan);
+        EXPECT_EQ(legacy_stats.radios[i].stats.on_time_pno_scan,
+                  converted.radios[i].V1_3.onTimeInMsForPnoScan);
+        EXPECT_EQ(legacy_stats.radios[i].stats.on_time_hs20,
+                  converted.radios[i].V1_3.onTimeInMsForHs20Scan);
+        EXPECT_EQ(legacy_stats.radios[i].channel_stats.size(),
+                  converted.radios[i].V1_3.channelStats.size());
+        for (size_t k = 0; k < legacy_stats.radios[i].channel_stats.size(); k++) {
+            auto& legacy_channel_st = legacy_stats.radios[i].channel_stats[k];
+            EXPECT_EQ(WifiChannelWidthInMhz::WIDTH_20,
+                      converted.radios[i].V1_3.channelStats[k].channel.width);
+            EXPECT_EQ(WifiChannelInMhz(legacy_channel_st.channel.center_freq),
+                      converted.radios[i].V1_3.channelStats[k].channel.centerFreq);
+            EXPECT_EQ(WifiChannelInMhz(legacy_channel_st.channel.center_freq0),
+                      converted.radios[i].V1_3.channelStats[k].channel.centerFreq0);
+            EXPECT_EQ(WifiChannelInMhz(legacy_channel_st.channel.center_freq1),
+                      converted.radios[i].V1_3.channelStats[k].channel.centerFreq1);
+            EXPECT_EQ(legacy_channel_st.cca_busy_time,
+                      converted.radios[i].V1_3.channelStats[k].ccaBusyTimeInMs);
+            EXPECT_EQ(legacy_channel_st.on_time,
+                      converted.radios[i].V1_3.channelStats[k].onTimeInMs);
+        }
+    }
+
+    EXPECT_EQ(legacy_stats.peers.size(), converted.iface.peers.size());
+    for (size_t i = 0; i < legacy_stats.peers.size(); i++) {
+        EXPECT_EQ(legacy_stats.peers[i].peer_info.bssload.sta_count,
+                  converted.iface.peers[i].staCount);
+        EXPECT_EQ(legacy_stats.peers[i].peer_info.bssload.chan_util,
+                  converted.iface.peers[i].chanUtil);
+        for (size_t j = 0; j < legacy_stats.peers[i].rate_stats.size(); j++) {
+            EXPECT_EQ(legacy_stats.peers[i].rate_stats[j].rate.preamble,
+                      (uint32_t)converted.iface.peers[i].rateStats[j].rateInfo.preamble);
+            EXPECT_EQ(legacy_stats.peers[i].rate_stats[j].rate.nss,
+                      (uint32_t)converted.iface.peers[i].rateStats[j].rateInfo.nss);
+            EXPECT_EQ(legacy_stats.peers[i].rate_stats[j].rate.bw,
+                      (uint32_t)converted.iface.peers[i].rateStats[j].rateInfo.bw);
+            EXPECT_EQ(legacy_stats.peers[i].rate_stats[j].rate.rateMcsIdx,
+                      converted.iface.peers[i].rateStats[j].rateInfo.rateMcsIdx);
+            EXPECT_EQ(legacy_stats.peers[i].rate_stats[j].tx_mpdu,
+                      converted.iface.peers[i].rateStats[j].txMpdu);
+            EXPECT_EQ(legacy_stats.peers[i].rate_stats[j].rx_mpdu,
+                      converted.iface.peers[i].rateStats[j].rxMpdu);
+            EXPECT_EQ(legacy_stats.peers[i].rate_stats[j].mpdu_lost,
+                      converted.iface.peers[i].rateStats[j].mpduLost);
+            EXPECT_EQ(legacy_stats.peers[i].rate_stats[j].retries,
+                      converted.iface.peers[i].rateStats[j].retries);
+        }
+    }
+}
+
+TEST_F(HidlStructUtilTest, CanConvertLegacyFeaturesToHidl) {
+    using HidlChipCaps = V1_3::IWifiChip::ChipCapabilityMask;
+
+    uint32_t hidle_caps;
+
+    uint32_t legacy_feature_set = WIFI_FEATURE_D2D_RTT | WIFI_FEATURE_SET_LATENCY_MODE;
+    uint32_t legacy_logger_feature_set = legacy_hal::WIFI_LOGGER_DRIVER_DUMP_SUPPORTED;
+
+    ASSERT_TRUE(hidl_struct_util::convertLegacyFeaturesToHidlChipCapabilities(
+            legacy_feature_set, legacy_logger_feature_set, &hidle_caps));
+
+    EXPECT_EQ(HidlChipCaps::DEBUG_RING_BUFFER_VENDOR_DATA |
+                      HidlChipCaps::DEBUG_HOST_WAKE_REASON_STATS |
+                      HidlChipCaps::DEBUG_ERROR_ALERTS | HidlChipCaps::D2D_RTT |
+                      HidlChipCaps::SET_LATENCY_MODE | HidlChipCaps::DEBUG_MEMORY_DRIVER_DUMP,
+              hidle_caps);
+}
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.5/default/tests/main.cpp b/wifi/1.6/default/tests/main.cpp
similarity index 100%
rename from wifi/1.5/default/tests/main.cpp
rename to wifi/1.6/default/tests/main.cpp
diff --git a/wifi/1.5/default/tests/mock_interface_tool.cpp b/wifi/1.6/default/tests/mock_interface_tool.cpp
similarity index 100%
rename from wifi/1.5/default/tests/mock_interface_tool.cpp
rename to wifi/1.6/default/tests/mock_interface_tool.cpp
diff --git a/wifi/1.6/default/tests/mock_interface_tool.h b/wifi/1.6/default/tests/mock_interface_tool.h
new file mode 100644
index 0000000..7ce3992
--- /dev/null
+++ b/wifi/1.6/default/tests/mock_interface_tool.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef MOCK_INTERFACE_TOOL_H
+#define MOCK_INTERFACE_TOOL_H
+
+#include <gmock/gmock.h>
+#include <wifi_system/interface_tool.h>
+
+namespace android {
+namespace wifi_system {
+
+class MockInterfaceTool : public InterfaceTool {
+  public:
+    MockInterfaceTool();
+
+    MOCK_METHOD1(GetUpState, bool(const char* if_name));
+    MOCK_METHOD2(SetUpState, bool(const char* if_name, bool request_up));
+    MOCK_METHOD1(SetWifiUpState, bool(bool request_up));
+    MOCK_METHOD2(SetMacAddress,
+                 bool(const char* if_name, const std::array<uint8_t, ETH_ALEN>& address));
+    MOCK_METHOD1(GetFactoryMacAddress, std::array<uint8_t, ETH_ALEN>(const char* if_name));
+
+};  // class MockInterfaceTool
+
+}  // namespace wifi_system
+}  // namespace android
+
+#endif  // MOCK_INTERFACE_TOOL_H
diff --git a/wifi/1.6/default/tests/mock_wifi_feature_flags.cpp b/wifi/1.6/default/tests/mock_wifi_feature_flags.cpp
new file mode 100644
index 0000000..d10b74c
--- /dev/null
+++ b/wifi/1.6/default/tests/mock_wifi_feature_flags.cpp
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gmock/gmock.h>
+
+#include "mock_wifi_feature_flags.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+namespace feature_flags {
+
+MockWifiFeatureFlags::MockWifiFeatureFlags() {}
+
+}  // namespace feature_flags
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.6/default/tests/mock_wifi_feature_flags.h b/wifi/1.6/default/tests/mock_wifi_feature_flags.h
new file mode 100644
index 0000000..fa3600a
--- /dev/null
+++ b/wifi/1.6/default/tests/mock_wifi_feature_flags.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef MOCK_WIFI_FEATURE_FLAGS_H_
+#define MOCK_WIFI_FEATURE_FLAGS_H_
+
+#include <gmock/gmock.h>
+#undef NAN  // This is weird, NAN is defined in bionic/libc/include/math.h:38
+
+#include "wifi_feature_flags.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+namespace feature_flags {
+
+class MockWifiFeatureFlags : public WifiFeatureFlags {
+  public:
+    MockWifiFeatureFlags();
+
+    MOCK_METHOD1(getChipModes, std::vector<V1_0::IWifiChip::ChipMode>(bool is_primary));
+    MOCK_METHOD0(isApMacRandomizationDisabled, bool());
+};
+
+}  // namespace feature_flags
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // MOCK_WIFI_FEATURE_FLAGS_H_
diff --git a/wifi/1.6/default/tests/mock_wifi_iface_util.cpp b/wifi/1.6/default/tests/mock_wifi_iface_util.cpp
new file mode 100644
index 0000000..24b16cb
--- /dev/null
+++ b/wifi/1.6/default/tests/mock_wifi_iface_util.cpp
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android-base/macros.h>
+#include <gmock/gmock.h>
+
+#undef NAN  // This is weird, NAN is defined in bionic/libc/include/math.h:38
+#include "mock_wifi_iface_util.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+namespace iface_util {
+
+MockWifiIfaceUtil::MockWifiIfaceUtil(const std::weak_ptr<wifi_system::InterfaceTool> iface_tool,
+                                     const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal)
+    : WifiIfaceUtil(iface_tool, legacy_hal) {}
+}  // namespace iface_util
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.6/default/tests/mock_wifi_iface_util.h b/wifi/1.6/default/tests/mock_wifi_iface_util.h
new file mode 100644
index 0000000..2701c36
--- /dev/null
+++ b/wifi/1.6/default/tests/mock_wifi_iface_util.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef MOCK_WIFI_IFACE_UTIL_H_
+#define MOCK_WIFI_IFACE_UTIL_H_
+
+#include <gmock/gmock.h>
+
+#include "wifi_iface_util.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+namespace iface_util {
+
+class MockWifiIfaceUtil : public WifiIfaceUtil {
+  public:
+    MockWifiIfaceUtil(const std::weak_ptr<wifi_system::InterfaceTool> iface_tool,
+                      const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal);
+    MOCK_METHOD1(getFactoryMacAddress, std::array<uint8_t, 6>(const std::string&));
+    MOCK_METHOD2(setMacAddress, bool(const std::string&, const std::array<uint8_t, 6>&));
+    MOCK_METHOD0(getOrCreateRandomMacAddress, std::array<uint8_t, 6>());
+    MOCK_METHOD2(registerIfaceEventHandlers, void(const std::string&, IfaceEventHandlers));
+    MOCK_METHOD1(unregisterIfaceEventHandlers, void(const std::string&));
+    MOCK_METHOD2(setUpState, bool(const std::string&, bool));
+    MOCK_METHOD1(ifNameToIndex, unsigned(const std::string&));
+};
+}  // namespace iface_util
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // MOCK_WIFI_IFACE_UTIL_H_
diff --git a/wifi/1.6/default/tests/mock_wifi_legacy_hal.cpp b/wifi/1.6/default/tests/mock_wifi_legacy_hal.cpp
new file mode 100644
index 0000000..2c55861
--- /dev/null
+++ b/wifi/1.6/default/tests/mock_wifi_legacy_hal.cpp
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android-base/macros.h>
+#include <gmock/gmock.h>
+
+#undef NAN  // This is weird, NAN is defined in bionic/libc/include/math.h:38
+#include "mock_wifi_legacy_hal.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+namespace legacy_hal {
+
+MockWifiLegacyHal::MockWifiLegacyHal(const std::weak_ptr<wifi_system::InterfaceTool> iface_tool,
+                                     const wifi_hal_fn& fn, bool is_primary)
+    : WifiLegacyHal(iface_tool, fn, is_primary) {}
+}  // namespace legacy_hal
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.6/default/tests/mock_wifi_legacy_hal.h b/wifi/1.6/default/tests/mock_wifi_legacy_hal.h
new file mode 100644
index 0000000..b1f5327
--- /dev/null
+++ b/wifi/1.6/default/tests/mock_wifi_legacy_hal.h
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef MOCK_WIFI_LEGACY_HAL_H_
+#define MOCK_WIFI_LEGACY_HAL_H_
+
+#include <gmock/gmock.h>
+
+#include "wifi_legacy_hal.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+namespace legacy_hal {
+
+class MockWifiLegacyHal : public WifiLegacyHal {
+  public:
+    MockWifiLegacyHal(const std::weak_ptr<wifi_system::InterfaceTool> iface_tool,
+                      const wifi_hal_fn& fn, bool is_primary);
+    MOCK_METHOD0(initialize, wifi_error());
+    MOCK_METHOD0(start, wifi_error());
+    MOCK_METHOD2(stop,
+                 wifi_error(std::unique_lock<std::recursive_mutex>*, const std::function<void()>&));
+    MOCK_METHOD2(setDfsFlag, wifi_error(const std::string&, bool));
+    MOCK_METHOD2(registerRadioModeChangeCallbackHandler,
+                 wifi_error(const std::string&, const on_radio_mode_change_callback&));
+    MOCK_METHOD1(getFirmwareVersion,
+                 std::pair<wifi_error, std::string>(const std::string& iface_name));
+    MOCK_METHOD1(getDriverVersion,
+                 std::pair<wifi_error, std::string>(const std::string& iface_name));
+
+    MOCK_METHOD2(selectTxPowerScenario,
+                 wifi_error(const std::string& iface_name, wifi_power_scenario scenario));
+    MOCK_METHOD1(resetTxPowerScenario, wifi_error(const std::string& iface_name));
+    MOCK_METHOD2(nanRegisterCallbackHandlers,
+                 wifi_error(const std::string&, const NanCallbackHandlers&));
+    MOCK_METHOD2(nanDisableRequest, wifi_error(const std::string&, transaction_id));
+    MOCK_METHOD3(nanDataInterfaceDelete,
+                 wifi_error(const std::string&, transaction_id, const std::string&));
+    MOCK_METHOD2(createVirtualInterface,
+                 wifi_error(const std::string& ifname, wifi_interface_type iftype));
+    MOCK_METHOD1(deleteVirtualInterface, wifi_error(const std::string& ifname));
+    MOCK_METHOD0(waitForDriverReady, wifi_error());
+};
+}  // namespace legacy_hal
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // MOCK_WIFI_LEGACY_HAL_H_
diff --git a/wifi/1.6/default/tests/mock_wifi_mode_controller.cpp b/wifi/1.6/default/tests/mock_wifi_mode_controller.cpp
new file mode 100644
index 0000000..446f829
--- /dev/null
+++ b/wifi/1.6/default/tests/mock_wifi_mode_controller.cpp
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android-base/macros.h>
+#include <gmock/gmock.h>
+
+#undef NAN  // This is weird, NAN is defined in bionic/libc/include/math.h:38
+#include "mock_wifi_mode_controller.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+namespace mode_controller {
+
+MockWifiModeController::MockWifiModeController() : WifiModeController() {}
+}  // namespace mode_controller
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.6/default/tests/mock_wifi_mode_controller.h b/wifi/1.6/default/tests/mock_wifi_mode_controller.h
new file mode 100644
index 0000000..addcc81
--- /dev/null
+++ b/wifi/1.6/default/tests/mock_wifi_mode_controller.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef MOCK_WIFI_MODE_CONTROLLER_H_
+#define MOCK_WIFI_MODE_CONTROLLER_H_
+
+#include <gmock/gmock.h>
+
+#include "wifi_mode_controller.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+namespace mode_controller {
+
+class MockWifiModeController : public WifiModeController {
+  public:
+    MockWifiModeController();
+    MOCK_METHOD0(initialize, bool());
+    MOCK_METHOD1(changeFirmwareMode, bool(IfaceType));
+    MOCK_METHOD1(isFirmwareModeChangeNeeded, bool(IfaceType));
+    MOCK_METHOD0(deinitialize, bool());
+};
+}  // namespace mode_controller
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // MOCK_WIFI_MODE_CONTROLLER_H_
diff --git a/wifi/1.6/default/tests/ringbuffer_unit_tests.cpp b/wifi/1.6/default/tests/ringbuffer_unit_tests.cpp
new file mode 100644
index 0000000..eb86194
--- /dev/null
+++ b/wifi/1.6/default/tests/ringbuffer_unit_tests.cpp
@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2018, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gmock/gmock.h>
+
+#include "ringbuffer.h"
+
+using testing::Return;
+using testing::Test;
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+
+class RingbufferTest : public Test {
+  public:
+    const uint32_t maxBufferSize_ = 10;
+    Ringbuffer buffer_{maxBufferSize_};
+};
+
+TEST_F(RingbufferTest, CreateEmptyBuffer) {
+    ASSERT_TRUE(buffer_.getData().empty());
+}
+
+TEST_F(RingbufferTest, CanUseFullBufferCapacity) {
+    const std::vector<uint8_t> input(maxBufferSize_ / 2, '0');
+    const std::vector<uint8_t> input2(maxBufferSize_ / 2, '1');
+    buffer_.append(input);
+    buffer_.append(input2);
+    ASSERT_EQ(2u, buffer_.getData().size());
+    EXPECT_EQ(input, buffer_.getData().front());
+    EXPECT_EQ(input2, buffer_.getData().back());
+}
+
+TEST_F(RingbufferTest, OldDataIsRemovedOnOverflow) {
+    const std::vector<uint8_t> input(maxBufferSize_ / 2, '0');
+    const std::vector<uint8_t> input2(maxBufferSize_ / 2, '1');
+    const std::vector<uint8_t> input3 = {'G'};
+    buffer_.append(input);
+    buffer_.append(input2);
+    buffer_.append(input3);
+    ASSERT_EQ(2u, buffer_.getData().size());
+    EXPECT_EQ(input2, buffer_.getData().front());
+    EXPECT_EQ(input3, buffer_.getData().back());
+}
+
+TEST_F(RingbufferTest, MultipleOldDataIsRemovedOnOverflow) {
+    const std::vector<uint8_t> input(maxBufferSize_ / 2, '0');
+    const std::vector<uint8_t> input2(maxBufferSize_ / 2, '1');
+    const std::vector<uint8_t> input3(maxBufferSize_, '2');
+    buffer_.append(input);
+    buffer_.append(input2);
+    buffer_.append(input3);
+    ASSERT_EQ(1u, buffer_.getData().size());
+    EXPECT_EQ(input3, buffer_.getData().front());
+}
+
+TEST_F(RingbufferTest, AppendingEmptyBufferDoesNotAddGarbage) {
+    const std::vector<uint8_t> input = {};
+    buffer_.append(input);
+    ASSERT_TRUE(buffer_.getData().empty());
+}
+
+TEST_F(RingbufferTest, OversizedAppendIsDropped) {
+    const std::vector<uint8_t> input(maxBufferSize_ + 1, '0');
+    buffer_.append(input);
+    ASSERT_TRUE(buffer_.getData().empty());
+}
+
+TEST_F(RingbufferTest, OversizedAppendDoesNotDropExistingData) {
+    const std::vector<uint8_t> input(maxBufferSize_, '0');
+    const std::vector<uint8_t> input2(maxBufferSize_ + 1, '1');
+    buffer_.append(input);
+    buffer_.append(input2);
+    ASSERT_EQ(1u, buffer_.getData().size());
+    EXPECT_EQ(input, buffer_.getData().front());
+}
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.5/default/tests/runtests.sh b/wifi/1.6/default/tests/runtests.sh
similarity index 100%
rename from wifi/1.5/default/tests/runtests.sh
rename to wifi/1.6/default/tests/runtests.sh
diff --git a/wifi/1.6/default/tests/wifi_chip_unit_tests.cpp b/wifi/1.6/default/tests/wifi_chip_unit_tests.cpp
new file mode 100644
index 0000000..5390411
--- /dev/null
+++ b/wifi/1.6/default/tests/wifi_chip_unit_tests.cpp
@@ -0,0 +1,854 @@
+/*
+ * Copyright (C) 2017, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android-base/macros.h>
+#include <cutils/properties.h>
+#include <gmock/gmock.h>
+
+#undef NAN  // This is weird, NAN is defined in bionic/libc/include/math.h:38
+#include "wifi_chip.h"
+
+#include "mock_interface_tool.h"
+#include "mock_wifi_feature_flags.h"
+#include "mock_wifi_iface_util.h"
+#include "mock_wifi_legacy_hal.h"
+#include "mock_wifi_mode_controller.h"
+
+using testing::NiceMock;
+using testing::Return;
+using testing::Test;
+
+namespace {
+using android::hardware::wifi::V1_0::ChipId;
+
+constexpr ChipId kFakeChipId = 5;
+}  // namespace
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+
+class WifiChipTest : public Test {
+  protected:
+    void setupV1IfaceCombination() {
+        // clang-format off
+        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinationsSta = {
+            {{{{IfaceType::STA}, 1}, {{IfaceType::P2P}, 1}}}
+        };
+        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinationsAp = {
+            {{{{IfaceType::AP}, 1}}}
+        };
+        const std::vector<V1_0::IWifiChip::ChipMode> modes = {
+            {feature_flags::chip_mode_ids::kV1Sta, combinationsSta},
+            {feature_flags::chip_mode_ids::kV1Ap, combinationsAp}
+        };
+        // clang-format on
+        EXPECT_CALL(*feature_flags_, getChipModes(true)).WillRepeatedly(testing::Return(modes));
+    }
+
+    void setupV1_AwareIfaceCombination() {
+        // clang-format off
+        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinationsSta = {
+            {{{{IfaceType::STA}, 1}, {{IfaceType::P2P, IfaceType::NAN}, 1}}}
+        };
+        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinationsAp = {
+            {{{{IfaceType::AP}, 1}}}
+        };
+        const std::vector<V1_0::IWifiChip::ChipMode> modes = {
+            {feature_flags::chip_mode_ids::kV1Sta, combinationsSta},
+            {feature_flags::chip_mode_ids::kV1Ap, combinationsAp}
+        };
+        // clang-format on
+        EXPECT_CALL(*feature_flags_, getChipModes(true)).WillRepeatedly(testing::Return(modes));
+    }
+
+    void setupV1_AwareDisabledApIfaceCombination() {
+        // clang-format off
+        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinationsSta = {
+            {{{{IfaceType::STA}, 1}, {{IfaceType::P2P, IfaceType::NAN}, 1}}}
+        };
+        const std::vector<V1_0::IWifiChip::ChipMode> modes = {
+            {feature_flags::chip_mode_ids::kV1Sta, combinationsSta}
+        };
+        // clang-format on
+        EXPECT_CALL(*feature_flags_, getChipModes(true)).WillRepeatedly(testing::Return(modes));
+    }
+
+    void setupV2_AwareIfaceCombination() {
+        // clang-format off
+        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinations = {
+            {{{{IfaceType::STA}, 1}, {{IfaceType::AP}, 1}}},
+            {{{{IfaceType::STA}, 1}, {{IfaceType::P2P, IfaceType::NAN}, 1}}}
+        };
+        const std::vector<V1_0::IWifiChip::ChipMode> modes = {
+            {feature_flags::chip_mode_ids::kV3, combinations}
+        };
+        // clang-format on
+        EXPECT_CALL(*feature_flags_, getChipModes(true)).WillRepeatedly(testing::Return(modes));
+    }
+
+    void setupV2_AwareDisabledApIfaceCombination() {
+        // clang-format off
+        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinations = {
+            {{{{IfaceType::STA}, 1}, {{IfaceType::P2P, IfaceType::NAN}, 1}}}
+        };
+        const std::vector<V1_0::IWifiChip::ChipMode> modes = {
+            {feature_flags::chip_mode_ids::kV3, combinations}
+        };
+        // clang-format on
+        EXPECT_CALL(*feature_flags_, getChipModes(true)).WillRepeatedly(testing::Return(modes));
+    }
+
+    void setup_MultiIfaceCombination() {
+        // clang-format off
+        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinations = {
+            {{{{IfaceType::STA}, 3}, {{IfaceType::AP}, 1}}}
+        };
+        const std::vector<V1_0::IWifiChip::ChipMode> modes = {
+            {feature_flags::chip_mode_ids::kV3, combinations}
+        };
+        // clang-format on
+        EXPECT_CALL(*feature_flags_, getChipModes(true)).WillRepeatedly(testing::Return(modes));
+    }
+
+    void assertNumberOfModes(uint32_t num_modes) {
+        chip_->getAvailableModes([num_modes](const WifiStatus& status,
+                                             const std::vector<WifiChip::ChipMode>& modes) {
+            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+            // V2_Aware has 1 mode of operation.
+            ASSERT_EQ(num_modes, modes.size());
+        });
+    }
+
+    void findModeAndConfigureForIfaceType(const IfaceType& type) {
+        // This should be aligned with kInvalidModeId in wifi_chip.cpp.
+        ChipModeId mode_id = UINT32_MAX;
+        chip_->getAvailableModes([&mode_id, &type](const WifiStatus& status,
+                                                   const std::vector<WifiChip::ChipMode>& modes) {
+            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+            for (const auto& mode : modes) {
+                for (const auto& combination : mode.availableCombinations) {
+                    for (const auto& limit : combination.limits) {
+                        if (limit.types.end() !=
+                            std::find(limit.types.begin(), limit.types.end(), type)) {
+                            mode_id = mode.id;
+                        }
+                    }
+                }
+            }
+        });
+        ASSERT_NE(UINT32_MAX, mode_id);
+
+        chip_->configureChip(mode_id, [](const WifiStatus& status) {
+            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+        });
+    }
+
+    // Returns an empty string on error.
+    std::string createIface(const IfaceType& type) {
+        std::string iface_name;
+        if (type == IfaceType::AP) {
+            chip_->createApIface(
+                    [&iface_name](const WifiStatus& status, const sp<V1_0::IWifiApIface>& iface) {
+                        if (WifiStatusCode::SUCCESS == status.code) {
+                            ASSERT_NE(iface.get(), nullptr);
+                            iface->getName([&iface_name](const WifiStatus& status,
+                                                         const hidl_string& name) {
+                                ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+                                iface_name = name.c_str();
+                            });
+                        }
+                    });
+        } else if (type == IfaceType::NAN) {
+            chip_->createNanIface(
+                    [&iface_name](const WifiStatus& status,
+                                  const sp<android::hardware::wifi::V1_0::IWifiNanIface>& iface) {
+                        if (WifiStatusCode::SUCCESS == status.code) {
+                            ASSERT_NE(iface.get(), nullptr);
+                            iface->getName([&iface_name](const WifiStatus& status,
+                                                         const hidl_string& name) {
+                                ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+                                iface_name = name.c_str();
+                            });
+                        }
+                    });
+        } else if (type == IfaceType::P2P) {
+            chip_->createP2pIface(
+                    [&iface_name](const WifiStatus& status, const sp<IWifiP2pIface>& iface) {
+                        if (WifiStatusCode::SUCCESS == status.code) {
+                            ASSERT_NE(iface.get(), nullptr);
+                            iface->getName([&iface_name](const WifiStatus& status,
+                                                         const hidl_string& name) {
+                                ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+                                iface_name = name.c_str();
+                            });
+                        }
+                    });
+        } else if (type == IfaceType::STA) {
+            chip_->createStaIface(
+                    [&iface_name](const WifiStatus& status, const sp<V1_0::IWifiStaIface>& iface) {
+                        if (WifiStatusCode::SUCCESS == status.code) {
+                            ASSERT_NE(iface.get(), nullptr);
+                            iface->getName([&iface_name](const WifiStatus& status,
+                                                         const hidl_string& name) {
+                                ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+                                iface_name = name.c_str();
+                            });
+                        }
+                    });
+        }
+        return iface_name;
+    }
+
+    void removeIface(const IfaceType& type, const std::string& iface_name) {
+        if (type == IfaceType::AP) {
+            chip_->removeApIface(iface_name, [](const WifiStatus& status) {
+                ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+            });
+        } else if (type == IfaceType::NAN) {
+            chip_->removeNanIface(iface_name, [](const WifiStatus& status) {
+                ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+            });
+        } else if (type == IfaceType::P2P) {
+            chip_->removeP2pIface(iface_name, [](const WifiStatus& status) {
+                ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+            });
+        } else if (type == IfaceType::STA) {
+            chip_->removeStaIface(iface_name, [](const WifiStatus& status) {
+                ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+            });
+        }
+    }
+
+    bool createRttController() {
+        bool success = false;
+        chip_->createRttController_1_4(
+                NULL, [&success](const WifiStatus& status, const sp<IWifiRttController>& rtt) {
+                    if (WifiStatusCode::SUCCESS == status.code) {
+                        ASSERT_NE(rtt.get(), nullptr);
+                        success = true;
+                    }
+                });
+        return success;
+    }
+
+    static void subsystemRestartHandler(const std::string& /*error*/) {}
+
+    sp<WifiChip> chip_;
+    ChipId chip_id_ = kFakeChipId;
+    legacy_hal::wifi_hal_fn fake_func_table_;
+    std::shared_ptr<NiceMock<wifi_system::MockInterfaceTool>> iface_tool_{
+            new NiceMock<wifi_system::MockInterfaceTool>};
+    std::shared_ptr<NiceMock<legacy_hal::MockWifiLegacyHal>> legacy_hal_{
+            new NiceMock<legacy_hal::MockWifiLegacyHal>(iface_tool_, fake_func_table_, true)};
+    std::shared_ptr<NiceMock<mode_controller::MockWifiModeController>> mode_controller_{
+            new NiceMock<mode_controller::MockWifiModeController>};
+    std::shared_ptr<NiceMock<iface_util::MockWifiIfaceUtil>> iface_util_{
+            new NiceMock<iface_util::MockWifiIfaceUtil>(iface_tool_, legacy_hal_)};
+    std::shared_ptr<NiceMock<feature_flags::MockWifiFeatureFlags>> feature_flags_{
+            new NiceMock<feature_flags::MockWifiFeatureFlags>};
+
+  public:
+    void SetUp() override {
+        chip_ = new WifiChip(chip_id_, true, legacy_hal_, mode_controller_, iface_util_,
+                             feature_flags_, subsystemRestartHandler);
+
+        EXPECT_CALL(*mode_controller_, changeFirmwareMode(testing::_))
+                .WillRepeatedly(testing::Return(true));
+        EXPECT_CALL(*legacy_hal_, start())
+                .WillRepeatedly(testing::Return(legacy_hal::WIFI_SUCCESS));
+    }
+
+    void TearDown() override {
+        // Restore default system iface names (This should ideally be using a
+        // mock).
+        property_set("wifi.interface", "wlan0");
+        property_set("wifi.concurrent.interface", "wlan1");
+        property_set("wifi.aware.interface", nullptr);
+    }
+};
+
+////////// V1 Iface Combinations ////////////
+// Mode 1 - STA + P2P
+// Mode 2 - AP
+class WifiChipV1IfaceCombinationTest : public WifiChipTest {
+  public:
+    void SetUp() override {
+        setupV1IfaceCombination();
+        WifiChipTest::SetUp();
+        // V1 has 2 modes of operation.
+        assertNumberOfModes(2u);
+    }
+};
+
+TEST_F(WifiChipV1IfaceCombinationTest, StaMode_CreateSta_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
+}
+
+TEST_F(WifiChipV1IfaceCombinationTest, StaMode_CreateP2p_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
+}
+
+TEST_F(WifiChipV1IfaceCombinationTest, StaMode_CreateNan_ShouldFail) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
+}
+
+TEST_F(WifiChipV1IfaceCombinationTest, StaMode_CreateAp_ShouldFail) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_TRUE(createIface(IfaceType::AP).empty());
+}
+
+TEST_F(WifiChipV1IfaceCombinationTest, StaMode_CreateStaP2p_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
+}
+
+TEST_F(WifiChipV1IfaceCombinationTest, ApMode_CreateAp_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    ASSERT_EQ(createIface(IfaceType::AP), "wlan0");
+}
+
+TEST_F(WifiChipV1IfaceCombinationTest, ApMode_CreateSta_ShouldFail) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    ASSERT_TRUE(createIface(IfaceType::STA).empty());
+}
+
+TEST_F(WifiChipV1IfaceCombinationTest, ApMode_CreateP2p_ShouldFail) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    ASSERT_TRUE(createIface(IfaceType::STA).empty());
+}
+
+TEST_F(WifiChipV1IfaceCombinationTest, ApMode_CreateNan_ShouldFail) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
+}
+
+////////// V1 + Aware Iface Combinations ////////////
+// Mode 1 - STA + P2P/NAN
+// Mode 2 - AP
+class WifiChipV1_AwareIfaceCombinationTest : public WifiChipTest {
+  public:
+    void SetUp() override {
+        setupV1_AwareIfaceCombination();
+        WifiChipTest::SetUp();
+        // V1_Aware has 2 modes of operation.
+        assertNumberOfModes(2u);
+    }
+};
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, StaMode_CreateSta_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, StaMode_CreateP2p_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, StaMode_CreateNan_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::NAN).empty());
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, StaMode_CreateAp_ShouldFail) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_TRUE(createIface(IfaceType::AP).empty());
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, StaMode_CreateStaP2p_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, StaMode_CreateStaNan_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_FALSE(createIface(IfaceType::NAN).empty());
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, StaMode_CreateStaP2PNan_ShouldFail) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
+    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, StaMode_CreateStaNan_AfterP2pRemove_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    const auto p2p_iface_name = createIface(IfaceType::P2P);
+    ASSERT_FALSE(p2p_iface_name.empty());
+    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
+
+    // After removing P2P iface, NAN iface creation should succeed.
+    removeIface(IfaceType::P2P, p2p_iface_name);
+    ASSERT_FALSE(createIface(IfaceType::NAN).empty());
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, StaMode_CreateStaP2p_AfterNanRemove_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    const auto nan_iface_name = createIface(IfaceType::NAN);
+    ASSERT_FALSE(nan_iface_name.empty());
+    ASSERT_TRUE(createIface(IfaceType::P2P).empty());
+
+    // After removing NAN iface, P2P iface creation should succeed.
+    removeIface(IfaceType::NAN, nan_iface_name);
+    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, ApMode_CreateAp_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    ASSERT_EQ(createIface(IfaceType::AP), "wlan0");
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, ApMode_CreateSta_ShouldFail) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    ASSERT_TRUE(createIface(IfaceType::STA).empty());
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, ApMode_CreateP2p_ShouldFail) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    ASSERT_TRUE(createIface(IfaceType::STA).empty());
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, ApMode_CreateNan_ShouldFail) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, RttControllerFlowStaModeNoSta) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_TRUE(createRttController());
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, RttControllerFlowStaModeWithSta) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_TRUE(createRttController());
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, RttControllerFlowApToSta) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    const auto ap_iface_name = createIface(IfaceType::AP);
+    ASSERT_FALSE(ap_iface_name.empty());
+    ASSERT_FALSE(createRttController());
+
+    removeIface(IfaceType::AP, ap_iface_name);
+
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_TRUE(createRttController());
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, SelectTxScenarioWithOnlySta) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
+    EXPECT_CALL(*legacy_hal_, selectTxPowerScenario("wlan0", testing::_))
+            .WillOnce(testing::Return(legacy_hal::WIFI_SUCCESS));
+    chip_->selectTxPowerScenario_1_2(
+            V1_2::IWifiChip::TxPowerScenario::ON_HEAD_CELL_OFF,
+            [](const WifiStatus& status) { ASSERT_EQ(WifiStatusCode::SUCCESS, status.code); });
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, SelectTxScenarioWithOnlyAp) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    ASSERT_EQ(createIface(IfaceType::AP), "wlan0");
+    EXPECT_CALL(*legacy_hal_, selectTxPowerScenario("wlan0", testing::_))
+            .WillOnce(testing::Return(legacy_hal::WIFI_SUCCESS));
+    chip_->selectTxPowerScenario_1_2(
+            V1_2::IWifiChip::TxPowerScenario::ON_HEAD_CELL_OFF,
+            [](const WifiStatus& status) { ASSERT_EQ(WifiStatusCode::SUCCESS, status.code); });
+}
+
+////////// V2 + Aware Iface Combinations ////////////
+// Mode 1 - STA + STA/AP
+//        - STA + P2P/NAN
+class WifiChipV2_AwareIfaceCombinationTest : public WifiChipTest {
+  public:
+    void SetUp() override {
+        setupV2_AwareIfaceCombination();
+        WifiChipTest::SetUp();
+        // V2_Aware has 1 mode of operation.
+        assertNumberOfModes(1u);
+    }
+};
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateSta_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateP2p_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateNan_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::NAN).empty());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateAp_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_EQ(createIface(IfaceType::AP), "wlan1");
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateStaSta_ShouldFail) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
+    ASSERT_TRUE(createIface(IfaceType::STA).empty());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateStaAp_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
+    ASSERT_EQ(createIface(IfaceType::AP), "wlan1");
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateApSta_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    ASSERT_EQ(createIface(IfaceType::AP), "wlan1");
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateSta_AfterStaApRemove_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    const auto sta_iface_name = createIface(IfaceType::STA);
+    ASSERT_FALSE(sta_iface_name.empty());
+    const auto ap_iface_name = createIface(IfaceType::AP);
+    ASSERT_FALSE(ap_iface_name.empty());
+
+    ASSERT_TRUE(createIface(IfaceType::STA).empty());
+
+    // After removing AP & STA iface, STA iface creation should succeed.
+    removeIface(IfaceType::STA, sta_iface_name);
+    removeIface(IfaceType::AP, ap_iface_name);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateStaP2p_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateStaNan_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_FALSE(createIface(IfaceType::NAN).empty());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateStaP2PNan_ShouldFail) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
+    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateStaNan_AfterP2pRemove_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    const auto p2p_iface_name = createIface(IfaceType::P2P);
+    ASSERT_FALSE(p2p_iface_name.empty());
+    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
+
+    // After removing P2P iface, NAN iface creation should succeed.
+    removeIface(IfaceType::P2P, p2p_iface_name);
+    ASSERT_FALSE(createIface(IfaceType::NAN).empty());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateStaP2p_AfterNanRemove_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    const auto nan_iface_name = createIface(IfaceType::NAN);
+    ASSERT_FALSE(nan_iface_name.empty());
+    ASSERT_TRUE(createIface(IfaceType::P2P).empty());
+
+    // After removing NAN iface, P2P iface creation should succeed.
+    removeIface(IfaceType::NAN, nan_iface_name);
+    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateApNan_ShouldFail) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    ASSERT_FALSE(createIface(IfaceType::AP).empty());
+    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateApP2p_ShouldFail) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    ASSERT_FALSE(createIface(IfaceType::AP).empty());
+    ASSERT_TRUE(createIface(IfaceType::P2P).empty());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, StaMode_CreateStaNan_AfterP2pRemove_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    const auto p2p_iface_name = createIface(IfaceType::P2P);
+    ASSERT_FALSE(p2p_iface_name.empty());
+    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
+
+    // After removing P2P iface, NAN iface creation should succeed.
+    removeIface(IfaceType::P2P, p2p_iface_name);
+    ASSERT_FALSE(createIface(IfaceType::NAN).empty());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, StaMode_CreateStaP2p_AfterNanRemove_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    const auto nan_iface_name = createIface(IfaceType::NAN);
+    ASSERT_FALSE(nan_iface_name.empty());
+    ASSERT_TRUE(createIface(IfaceType::P2P).empty());
+
+    // After removing NAN iface, P2P iface creation should succeed.
+    removeIface(IfaceType::NAN, nan_iface_name);
+    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateStaAp_EnsureDifferentIfaceNames) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    const auto sta_iface_name = createIface(IfaceType::STA);
+    const auto ap_iface_name = createIface(IfaceType::AP);
+    ASSERT_FALSE(sta_iface_name.empty());
+    ASSERT_FALSE(ap_iface_name.empty());
+    ASSERT_NE(sta_iface_name, ap_iface_name);
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, RttControllerFlowStaModeNoSta) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_TRUE(createRttController());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, RttControllerFlowStaModeWithSta) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_TRUE(createRttController());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, RttControllerFlow) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_FALSE(createIface(IfaceType::AP).empty());
+    ASSERT_TRUE(createRttController());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, SelectTxScenarioWithOnlySta) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
+    EXPECT_CALL(*legacy_hal_, selectTxPowerScenario("wlan0", testing::_))
+            .WillOnce(testing::Return(legacy_hal::WIFI_SUCCESS));
+    chip_->selectTxPowerScenario_1_2(
+            V1_2::IWifiChip::TxPowerScenario::ON_HEAD_CELL_OFF,
+            [](const WifiStatus& status) { ASSERT_EQ(WifiStatusCode::SUCCESS, status.code); });
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, SelectTxScenarioWithOnlyAp) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    ASSERT_EQ(createIface(IfaceType::AP), "wlan1");
+    EXPECT_CALL(*legacy_hal_, selectTxPowerScenario("wlan1", testing::_))
+            .WillOnce(testing::Return(legacy_hal::WIFI_SUCCESS));
+    chip_->selectTxPowerScenario_1_2(
+            V1_2::IWifiChip::TxPowerScenario::ON_HEAD_CELL_OFF,
+            [](const WifiStatus& status) { ASSERT_EQ(WifiStatusCode::SUCCESS, status.code); });
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, InvalidateAndRemoveNanOnStaRemove) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
+
+    // Create NAN iface
+    ASSERT_EQ(createIface(IfaceType::NAN), "wlan0");
+
+    // We should have 1 nan iface.
+    chip_->getNanIfaceNames([](const WifiStatus& status, const hidl_vec<hidl_string>& iface_names) {
+        ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+        ASSERT_EQ(iface_names.size(), 1u);
+        ASSERT_EQ(iface_names[0], "wlan0");
+    });
+    // Retrieve the exact iface object.
+    sp<android::hardware::wifi::V1_0::IWifiNanIface> nan_iface;
+    chip_->getNanIface("wlan0",
+                       [&nan_iface](const WifiStatus& status,
+                                    const sp<android::hardware::wifi::V1_0::IWifiNanIface>& iface) {
+                           ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+                           ASSERT_NE(iface.get(), nullptr);
+                           nan_iface = iface;
+                       });
+
+    // Remove the STA iface.
+    removeIface(IfaceType::STA, "wlan0");
+    // We should have 0 nan iface now.
+    chip_->getNanIfaceNames([](const WifiStatus& status, const hidl_vec<hidl_string>& iface_names) {
+        ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+        ASSERT_EQ(iface_names.size(), 0u);
+    });
+    // Any operation on the nan iface object should return error now.
+    nan_iface->getName([](const WifiStatus& status, const std::string& /* iface_name */) {
+        ASSERT_EQ(WifiStatusCode::ERROR_WIFI_IFACE_INVALID, status.code);
+    });
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, InvalidateAndRemoveRttControllerOnStaRemove) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
+
+    // Create RTT controller
+    sp<IWifiRttController> rtt_controller;
+    chip_->createRttController_1_4(
+            NULL, [&rtt_controller](const WifiStatus& status, const sp<IWifiRttController>& rtt) {
+                if (WifiStatusCode::SUCCESS == status.code) {
+                    ASSERT_NE(rtt.get(), nullptr);
+                    rtt_controller = rtt;
+                }
+            });
+
+    // Remove the STA iface.
+    removeIface(IfaceType::STA, "wlan0");
+
+    // Any operation on the rtt controller object should return error now.
+    rtt_controller->getBoundIface([](const WifiStatus& status, const sp<IWifiIface>& /* iface */) {
+        ASSERT_EQ(WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID, status.code);
+    });
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateNanWithSharedNanIface) {
+    property_set("wifi.aware.interface", nullptr);
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
+    ASSERT_EQ(createIface(IfaceType::NAN), "wlan0");
+    removeIface(IfaceType::NAN, "wlan0");
+    EXPECT_CALL(*iface_util_, setUpState(testing::_, testing::_)).Times(0);
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateNanWithDedicatedNanIface) {
+    property_set("wifi.aware.interface", "aware0");
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
+    EXPECT_CALL(*iface_util_, ifNameToIndex("aware0")).WillOnce(testing::Return(4));
+    EXPECT_CALL(*iface_util_, setUpState("aware0", true)).WillOnce(testing::Return(true));
+    ASSERT_EQ(createIface(IfaceType::NAN), "aware0");
+
+    EXPECT_CALL(*iface_util_, setUpState("aware0", false)).WillOnce(testing::Return(true));
+    removeIface(IfaceType::NAN, "aware0");
+}
+
+////////// V1 Iface Combinations when AP creation is disabled //////////
+class WifiChipV1_AwareDisabledApIfaceCombinationTest : public WifiChipTest {
+  public:
+    void SetUp() override {
+        setupV1_AwareDisabledApIfaceCombination();
+        WifiChipTest::SetUp();
+    }
+};
+
+TEST_F(WifiChipV1_AwareDisabledApIfaceCombinationTest, StaMode_CreateSta_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_TRUE(createIface(IfaceType::AP).empty());
+}
+
+////////// V2 Iface Combinations when AP creation is disabled //////////
+class WifiChipV2_AwareDisabledApIfaceCombinationTest : public WifiChipTest {
+  public:
+    void SetUp() override {
+        setupV2_AwareDisabledApIfaceCombination();
+        WifiChipTest::SetUp();
+    }
+};
+
+TEST_F(WifiChipV2_AwareDisabledApIfaceCombinationTest, CreateSta_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_TRUE(createIface(IfaceType::AP).empty());
+}
+
+////////// Hypothetical Iface Combination with multiple ifaces //////////
+class WifiChip_MultiIfaceTest : public WifiChipTest {
+  public:
+    void SetUp() override {
+        setup_MultiIfaceCombination();
+        WifiChipTest::SetUp();
+    }
+};
+
+TEST_F(WifiChip_MultiIfaceTest, Create3Sta) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_TRUE(createIface(IfaceType::STA).empty());
+}
+
+TEST_F(WifiChip_MultiIfaceTest, CreateStaWithDefaultNames) {
+    property_set("wifi.interface.0", "");
+    property_set("wifi.interface.1", "");
+    property_set("wifi.interface.2", "");
+    property_set("wifi.interface", "");
+    property_set("wifi.concurrent.interface", "");
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan1");
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan2");
+}
+
+TEST_F(WifiChip_MultiIfaceTest, CreateStaWithCustomNames) {
+    property_set("wifi.interface.0", "test0");
+    property_set("wifi.interface.1", "test1");
+    property_set("wifi.interface.2", "test2");
+    property_set("wifi.interface", "bad0");
+    property_set("wifi.concurrent.interface", "bad1");
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_EQ(createIface(IfaceType::STA), "bad0");
+    ASSERT_EQ(createIface(IfaceType::STA), "bad1");
+    ASSERT_EQ(createIface(IfaceType::STA), "test2");
+}
+
+TEST_F(WifiChip_MultiIfaceTest, CreateStaWithCustomAltNames) {
+    property_set("wifi.interface.0", "");
+    property_set("wifi.interface.1", "");
+    property_set("wifi.interface.2", "");
+    property_set("wifi.interface", "testA0");
+    property_set("wifi.concurrent.interface", "testA1");
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_EQ(createIface(IfaceType::STA), "testA0");
+    ASSERT_EQ(createIface(IfaceType::STA), "testA1");
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan2");
+}
+
+TEST_F(WifiChip_MultiIfaceTest, CreateApStartsWithIdx1) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    // First AP will be slotted to wlan1.
+    ASSERT_EQ(createIface(IfaceType::AP), "wlan1");
+    // First STA will be slotted to wlan0.
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
+    // All further STA will be slotted to the remaining free indices.
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan2");
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan3");
+}
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.6/default/tests/wifi_iface_util_unit_tests.cpp b/wifi/1.6/default/tests/wifi_iface_util_unit_tests.cpp
new file mode 100644
index 0000000..cc9a334
--- /dev/null
+++ b/wifi/1.6/default/tests/wifi_iface_util_unit_tests.cpp
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2019, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android-base/macros.h>
+#include <gmock/gmock.h>
+
+#undef NAN
+#include "wifi_iface_util.h"
+
+#include "mock_interface_tool.h"
+#include "mock_wifi_legacy_hal.h"
+
+using testing::NiceMock;
+using testing::Test;
+
+namespace {
+constexpr uint8_t kValidUnicastLocallyAssignedMacAddressMask = 0x02;
+constexpr uint8_t kMacAddress[] = {0x02, 0x12, 0x45, 0x56, 0xab, 0xcc};
+constexpr char kIfaceName[] = "test-wlan0";
+
+bool isValidUnicastLocallyAssignedMacAddress(const std::array<uint8_t, 6>& mac_address) {
+    uint8_t first_byte = mac_address[0];
+    return (first_byte & 0x3) == kValidUnicastLocallyAssignedMacAddressMask;
+}
+}  // namespace
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+namespace iface_util {
+class WifiIfaceUtilTest : public Test {
+  protected:
+    std::shared_ptr<NiceMock<wifi_system::MockInterfaceTool>> iface_tool_{
+            new NiceMock<wifi_system::MockInterfaceTool>};
+    legacy_hal::wifi_hal_fn fake_func_table_;
+    std::shared_ptr<NiceMock<legacy_hal::MockWifiLegacyHal>> legacy_hal_{
+            new NiceMock<legacy_hal::MockWifiLegacyHal>(iface_tool_, fake_func_table_, true)};
+    WifiIfaceUtil* iface_util_ = new WifiIfaceUtil(iface_tool_, legacy_hal_);
+};
+
+TEST_F(WifiIfaceUtilTest, GetOrCreateRandomMacAddress) {
+    auto mac_address = iface_util_->getOrCreateRandomMacAddress();
+    ASSERT_TRUE(isValidUnicastLocallyAssignedMacAddress(mac_address));
+
+    // All further calls should return the same MAC address.
+    ASSERT_EQ(mac_address, iface_util_->getOrCreateRandomMacAddress());
+    ASSERT_EQ(mac_address, iface_util_->getOrCreateRandomMacAddress());
+}
+
+TEST_F(WifiIfaceUtilTest, IfaceEventHandlers_SetMacAddress) {
+    std::array<uint8_t, 6> mac_address = {};
+    std::copy(std::begin(kMacAddress), std::end(kMacAddress), std::begin(mac_address));
+    EXPECT_CALL(*iface_tool_, SetMacAddress(testing::_, testing::_))
+            .WillRepeatedly(testing::Return(true));
+    EXPECT_CALL(*iface_tool_, SetUpState(testing::_, testing::_))
+            .WillRepeatedly(testing::Return(true));
+
+    // Register for iface state toggle events.
+    bool callback_invoked = false;
+    iface_util::IfaceEventHandlers event_handlers = {};
+    event_handlers.on_state_toggle_off_on =
+            [&callback_invoked](const std::string& /* iface_name */) { callback_invoked = true; };
+    iface_util_->registerIfaceEventHandlers(kIfaceName, event_handlers);
+    // Invoke setMacAddress and ensure that the cb is invoked.
+    ASSERT_TRUE(iface_util_->setMacAddress(kIfaceName, mac_address));
+    ASSERT_TRUE(callback_invoked);
+
+    // Unregister for iface state toggle events.
+    callback_invoked = false;
+    iface_util_->unregisterIfaceEventHandlers(kIfaceName);
+    // Invoke setMacAddress and ensure that the cb is not invoked.
+    ASSERT_TRUE(iface_util_->setMacAddress(kIfaceName, mac_address));
+    ASSERT_FALSE(callback_invoked);
+}
+}  // namespace iface_util
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.6/default/tests/wifi_nan_iface_unit_tests.cpp b/wifi/1.6/default/tests/wifi_nan_iface_unit_tests.cpp
new file mode 100644
index 0000000..c7c566b
--- /dev/null
+++ b/wifi/1.6/default/tests/wifi_nan_iface_unit_tests.cpp
@@ -0,0 +1,132 @@
+/*
+ * Copyright (C) 2019, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android-base/macros.h>
+#include <cutils/properties.h>
+#include <gmock/gmock.h>
+
+#undef NAN  // This is weird, NAN is defined in bionic/libc/include/math.h:38
+#include "wifi_nan_iface.h"
+
+#include "mock_interface_tool.h"
+#include "mock_wifi_feature_flags.h"
+#include "mock_wifi_iface_util.h"
+#include "mock_wifi_legacy_hal.h"
+
+using testing::NiceMock;
+using testing::Return;
+using testing::Test;
+
+namespace {
+constexpr char kIfaceName[] = "mockWlan0";
+}  // namespace
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+
+using android::hardware::wifi::V1_2::NanDataPathConfirmInd;
+
+bool CaptureIfaceEventHandlers(const std::string& /* iface_name*/,
+                               iface_util::IfaceEventHandlers in_iface_event_handlers,
+                               iface_util::IfaceEventHandlers* out_iface_event_handlers) {
+    *out_iface_event_handlers = in_iface_event_handlers;
+    return true;
+}
+
+class MockNanIfaceEventCallback : public V1_5::IWifiNanIfaceEventCallback {
+  public:
+    MockNanIfaceEventCallback() = default;
+
+    MOCK_METHOD3(notifyCapabilitiesResponse,
+                 Return<void>(uint16_t, const WifiNanStatus&,
+                              const android::hardware::wifi::V1_0::NanCapabilities&));
+    MOCK_METHOD2(notifyEnableResponse, Return<void>(uint16_t, const WifiNanStatus&));
+    MOCK_METHOD2(notifyConfigResponse, Return<void>(uint16_t, const WifiNanStatus&));
+    MOCK_METHOD2(notifyDisableResponse, Return<void>(uint16_t, const WifiNanStatus&));
+    MOCK_METHOD3(notifyStartPublishResponse, Return<void>(uint16_t, const WifiNanStatus&, uint8_t));
+    MOCK_METHOD2(notifyStopPublishResponse, Return<void>(uint16_t, const WifiNanStatus&));
+    MOCK_METHOD3(notifyStartSubscribeResponse,
+                 Return<void>(uint16_t, const WifiNanStatus&, uint8_t));
+    MOCK_METHOD2(notifyStopSubscribeResponse, Return<void>(uint16_t, const WifiNanStatus&));
+    MOCK_METHOD2(notifyTransmitFollowupResponse, Return<void>(uint16_t, const WifiNanStatus&));
+    MOCK_METHOD2(notifyCreateDataInterfaceResponse, Return<void>(uint16_t, const WifiNanStatus&));
+    MOCK_METHOD2(notifyDeleteDataInterfaceResponse, Return<void>(uint16_t, const WifiNanStatus&));
+    MOCK_METHOD3(notifyInitiateDataPathResponse,
+                 Return<void>(uint16_t, const WifiNanStatus&, uint32_t));
+    MOCK_METHOD2(notifyRespondToDataPathIndicationResponse,
+                 Return<void>(uint16_t, const WifiNanStatus&));
+    MOCK_METHOD2(notifyTerminateDataPathResponse, Return<void>(uint16_t, const WifiNanStatus&));
+    MOCK_METHOD1(eventClusterEvent, Return<void>(const NanClusterEventInd&));
+    MOCK_METHOD1(eventDisabled, Return<void>(const WifiNanStatus&));
+    MOCK_METHOD2(eventPublishTerminated, Return<void>(uint8_t, const WifiNanStatus&));
+    MOCK_METHOD2(eventSubscribeTerminated, Return<void>(uint8_t, const WifiNanStatus&));
+    MOCK_METHOD1(eventMatch, Return<void>(const NanMatchInd&));
+    MOCK_METHOD2(eventMatchExpired, Return<void>(uint8_t, uint32_t));
+    MOCK_METHOD1(eventFollowupReceived, Return<void>(const NanFollowupReceivedInd&));
+    MOCK_METHOD2(eventTransmitFollowup, Return<void>(uint16_t, const WifiNanStatus&));
+    MOCK_METHOD1(eventDataPathRequest, Return<void>(const NanDataPathRequestInd&));
+    MOCK_METHOD1(eventDataPathConfirm,
+                 Return<void>(const android::hardware::wifi::V1_0::NanDataPathConfirmInd&));
+    MOCK_METHOD1(eventDataPathTerminated, Return<void>(uint32_t));
+    MOCK_METHOD1(eventDataPathConfirm_1_2, Return<void>(const NanDataPathConfirmInd&));
+    MOCK_METHOD1(eventDataPathScheduleUpdate, Return<void>(const NanDataPathScheduleUpdateInd&));
+    MOCK_METHOD3(notifyCapabilitiesResponse_1_5,
+                 Return<void>(uint16_t, const WifiNanStatus&, const V1_5::NanCapabilities&));
+};
+
+class WifiNanIfaceTest : public Test {
+  protected:
+    legacy_hal::wifi_hal_fn fake_func_table_;
+    std::shared_ptr<NiceMock<wifi_system::MockInterfaceTool>> iface_tool_{
+            new NiceMock<wifi_system::MockInterfaceTool>};
+    std::shared_ptr<NiceMock<legacy_hal::MockWifiLegacyHal>> legacy_hal_{
+            new NiceMock<legacy_hal::MockWifiLegacyHal>(iface_tool_, fake_func_table_, true)};
+    std::shared_ptr<NiceMock<iface_util::MockWifiIfaceUtil>> iface_util_{
+            new NiceMock<iface_util::MockWifiIfaceUtil>(iface_tool_, legacy_hal_)};
+};
+
+TEST_F(WifiNanIfaceTest, IfacEventHandlers_OnStateToggleOffOn) {
+    iface_util::IfaceEventHandlers captured_iface_event_handlers = {};
+    EXPECT_CALL(*legacy_hal_, nanRegisterCallbackHandlers(testing::_, testing::_))
+            .WillOnce(testing::Return(legacy_hal::WIFI_SUCCESS));
+    EXPECT_CALL(*iface_util_, registerIfaceEventHandlers(testing::_, testing::_))
+            .WillOnce(testing::Invoke(bind(CaptureIfaceEventHandlers, std::placeholders::_1,
+                                           std::placeholders::_2, &captured_iface_event_handlers)));
+    sp<WifiNanIface> nan_iface = new WifiNanIface(kIfaceName, false, legacy_hal_, iface_util_);
+
+    // Register a mock nan event callback.
+    sp<NiceMock<MockNanIfaceEventCallback>> mock_event_callback{
+            new NiceMock<MockNanIfaceEventCallback>};
+    nan_iface->registerEventCallback(mock_event_callback, [](const WifiStatus& status) {
+        ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+    });
+    // Ensure that the eventDisabled() function in mock callback will be
+    // invoked.
+    WifiNanStatus expected_nan_status = {NanStatusType::UNSUPPORTED_CONCURRENCY_NAN_DISABLED, ""};
+    EXPECT_CALL(*mock_event_callback, eventDisabled(expected_nan_status)).Times(1);
+
+    // Trigger the iface state toggle callback.
+    captured_iface_event_handlers.on_state_toggle_off_on(kIfaceName);
+}
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.6/default/wifi.cpp b/wifi/1.6/default/wifi.cpp
new file mode 100644
index 0000000..c302ce2
--- /dev/null
+++ b/wifi/1.6/default/wifi.cpp
@@ -0,0 +1,294 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+
+#include "hidl_return_util.h"
+#include "wifi.h"
+#include "wifi_status_util.h"
+
+namespace {
+// Starting Chip ID, will be assigned to primary chip
+static constexpr android::hardware::wifi::V1_0::ChipId kPrimaryChipId = 0;
+}  // namespace
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+using hidl_return_util::validateAndCall;
+using hidl_return_util::validateAndCallWithLock;
+
+Wifi::Wifi(const std::shared_ptr<wifi_system::InterfaceTool> iface_tool,
+           const std::shared_ptr<legacy_hal::WifiLegacyHalFactory> legacy_hal_factory,
+           const std::shared_ptr<mode_controller::WifiModeController> mode_controller,
+           const std::shared_ptr<feature_flags::WifiFeatureFlags> feature_flags)
+    : iface_tool_(iface_tool),
+      legacy_hal_factory_(legacy_hal_factory),
+      mode_controller_(mode_controller),
+      feature_flags_(feature_flags),
+      run_state_(RunState::STOPPED) {}
+
+bool Wifi::isValid() {
+    // This object is always valid.
+    return true;
+}
+
+Return<void> Wifi::registerEventCallback(const sp<V1_0::IWifiEventCallback>& event_callback,
+                                         registerEventCallback_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_UNKNOWN,
+                           &Wifi::registerEventCallbackInternal, hidl_status_cb, event_callback);
+}
+
+Return<void> Wifi::registerEventCallback_1_5(const sp<V1_5::IWifiEventCallback>& event_callback,
+                                             registerEventCallback_1_5_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_UNKNOWN,
+                           &Wifi::registerEventCallbackInternal_1_5, hidl_status_cb,
+                           event_callback);
+}
+
+Return<bool> Wifi::isStarted() {
+    return run_state_ != RunState::STOPPED;
+}
+
+Return<void> Wifi::start(start_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_UNKNOWN, &Wifi::startInternal,
+                           hidl_status_cb);
+}
+
+Return<void> Wifi::stop(stop_cb hidl_status_cb) {
+    return validateAndCallWithLock(this, WifiStatusCode::ERROR_UNKNOWN, &Wifi::stopInternal,
+                                   hidl_status_cb);
+}
+
+Return<void> Wifi::getChipIds(getChipIds_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_UNKNOWN, &Wifi::getChipIdsInternal,
+                           hidl_status_cb);
+}
+
+Return<void> Wifi::getChip(ChipId chip_id, getChip_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_UNKNOWN, &Wifi::getChipInternal,
+                           hidl_status_cb, chip_id);
+}
+
+Return<void> Wifi::debug(const hidl_handle& handle, const hidl_vec<hidl_string>&) {
+    LOG(INFO) << "-----------Debug is called----------------";
+    if (chips_.size() == 0) {
+        return Void();
+    }
+
+    for (sp<WifiChip> chip : chips_) {
+        if (!chip.get()) continue;
+
+        chip->debug(handle, {});
+    }
+    return Void();
+}
+
+WifiStatus Wifi::registerEventCallbackInternal(
+        const sp<V1_0::IWifiEventCallback>& event_callback __unused) {
+    // Deprecated support for this callback.
+    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
+}
+
+WifiStatus Wifi::registerEventCallbackInternal_1_5(
+        const sp<V1_5::IWifiEventCallback>& event_callback) {
+    if (!event_cb_handler_.addCallback(event_callback)) {
+        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+    }
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+WifiStatus Wifi::startInternal() {
+    if (run_state_ == RunState::STARTED) {
+        return createWifiStatus(WifiStatusCode::SUCCESS);
+    } else if (run_state_ == RunState::STOPPING) {
+        return createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE, "HAL is stopping");
+    }
+    WifiStatus wifi_status = initializeModeControllerAndLegacyHal();
+    if (wifi_status.code == WifiStatusCode::SUCCESS) {
+        // Register the callback for subsystem restart
+        const auto& on_subsystem_restart_callback = [this](const std::string& error) {
+            WifiStatus wifi_status = createWifiStatus(WifiStatusCode::ERROR_UNKNOWN, error);
+            for (const auto& callback : event_cb_handler_.getCallbacks()) {
+                LOG(INFO) << "Attempting to invoke onSubsystemRestart "
+                             "callback";
+                if (!callback->onSubsystemRestart(wifi_status).isOk()) {
+                    LOG(ERROR) << "Failed to invoke onSubsystemRestart callback";
+                } else {
+                    LOG(INFO) << "Succeeded to invoke onSubsystemRestart "
+                                 "callback";
+                }
+            }
+        };
+
+        // Create the chip instance once the HAL is started.
+        android::hardware::wifi::V1_0::ChipId chipId = kPrimaryChipId;
+        for (auto& hal : legacy_hals_) {
+            chips_.push_back(
+                    new WifiChip(chipId, chipId == kPrimaryChipId, hal, mode_controller_,
+                                 std::make_shared<iface_util::WifiIfaceUtil>(iface_tool_, hal),
+                                 feature_flags_, on_subsystem_restart_callback));
+            chipId++;
+        }
+        run_state_ = RunState::STARTED;
+        for (const auto& callback : event_cb_handler_.getCallbacks()) {
+            if (!callback->onStart().isOk()) {
+                LOG(ERROR) << "Failed to invoke onStart callback";
+            };
+        }
+        LOG(INFO) << "Wifi HAL started";
+    } else {
+        for (const auto& callback : event_cb_handler_.getCallbacks()) {
+            if (!callback->onFailure(wifi_status).isOk()) {
+                LOG(ERROR) << "Failed to invoke onFailure callback";
+            }
+        }
+        LOG(ERROR) << "Wifi HAL start failed";
+        // Clear the event callback objects since the HAL start failed.
+        event_cb_handler_.invalidate();
+    }
+    return wifi_status;
+}
+
+WifiStatus Wifi::stopInternal(
+        /* NONNULL */ std::unique_lock<std::recursive_mutex>* lock) {
+    if (run_state_ == RunState::STOPPED) {
+        return createWifiStatus(WifiStatusCode::SUCCESS);
+    } else if (run_state_ == RunState::STOPPING) {
+        return createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE, "HAL is stopping");
+    }
+    // Clear the chip object and its child objects since the HAL is now
+    // stopped.
+    for (auto& chip : chips_) {
+        if (chip.get()) {
+            chip->invalidate();
+            chip.clear();
+        }
+    }
+    chips_.clear();
+    WifiStatus wifi_status = stopLegacyHalAndDeinitializeModeController(lock);
+    if (wifi_status.code == WifiStatusCode::SUCCESS) {
+        for (const auto& callback : event_cb_handler_.getCallbacks()) {
+            if (!callback->onStop().isOk()) {
+                LOG(ERROR) << "Failed to invoke onStop callback";
+            };
+        }
+        LOG(INFO) << "Wifi HAL stopped";
+    } else {
+        for (const auto& callback : event_cb_handler_.getCallbacks()) {
+            if (!callback->onFailure(wifi_status).isOk()) {
+                LOG(ERROR) << "Failed to invoke onFailure callback";
+            }
+        }
+        LOG(ERROR) << "Wifi HAL stop failed";
+    }
+    // Clear the event callback objects since the HAL is now stopped.
+    event_cb_handler_.invalidate();
+    return wifi_status;
+}
+
+std::pair<WifiStatus, std::vector<ChipId>> Wifi::getChipIdsInternal() {
+    std::vector<ChipId> chip_ids;
+
+    for (auto& chip : chips_) {
+        ChipId chip_id = getChipIdFromWifiChip(chip);
+        if (chip_id != UINT32_MAX) chip_ids.emplace_back(chip_id);
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), std::move(chip_ids)};
+}
+
+std::pair<WifiStatus, sp<V1_4::IWifiChip>> Wifi::getChipInternal(ChipId chip_id) {
+    for (auto& chip : chips_) {
+        ChipId cand_id = getChipIdFromWifiChip(chip);
+        if ((cand_id != UINT32_MAX) && (cand_id == chip_id))
+            return {createWifiStatus(WifiStatusCode::SUCCESS), chip};
+    }
+
+    return {createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS), nullptr};
+}
+
+WifiStatus Wifi::initializeModeControllerAndLegacyHal() {
+    if (!mode_controller_->initialize()) {
+        LOG(ERROR) << "Failed to initialize firmware mode controller";
+        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+    }
+
+    legacy_hals_ = legacy_hal_factory_->getHals();
+    if (legacy_hals_.empty()) return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+    int index = 0;  // for failure log
+    for (auto& hal : legacy_hals_) {
+        legacy_hal::wifi_error legacy_status = hal->initialize();
+        if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+            // Currently WifiLegacyHal::initialize does not allocate extra mem,
+            // only initializes the function table. If this changes, need to
+            // implement WifiLegacyHal::deinitialize and deinitalize the
+            // HALs already initialized
+            LOG(ERROR) << "Failed to initialize legacy HAL index: " << index
+                       << " error: " << legacyErrorToString(legacy_status);
+            return createWifiStatusFromLegacyError(legacy_status);
+        }
+        index++;
+    }
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+WifiStatus Wifi::stopLegacyHalAndDeinitializeModeController(
+        /* NONNULL */ std::unique_lock<std::recursive_mutex>* lock) {
+    legacy_hal::wifi_error legacy_status = legacy_hal::WIFI_SUCCESS;
+    int index = 0;
+
+    run_state_ = RunState::STOPPING;
+    for (auto& hal : legacy_hals_) {
+        legacy_hal::wifi_error tmp = hal->stop(lock, [&]() {});
+        if (tmp != legacy_hal::WIFI_SUCCESS) {
+            LOG(ERROR) << "Failed to stop legacy HAL index: " << index
+                       << " error: " << legacyErrorToString(legacy_status);
+            legacy_status = tmp;
+        }
+        index++;
+    }
+    run_state_ = RunState::STOPPED;
+
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        LOG(ERROR) << "One or more legacy HALs failed to stop";
+        return createWifiStatusFromLegacyError(legacy_status);
+    }
+    if (!mode_controller_->deinitialize()) {
+        LOG(ERROR) << "Failed to deinitialize firmware mode controller";
+        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+    }
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+ChipId Wifi::getChipIdFromWifiChip(sp<WifiChip>& chip) {
+    ChipId chip_id = UINT32_MAX;
+    if (chip.get()) {
+        chip->getId([&](WifiStatus status, uint32_t id) {
+            if (status.code == WifiStatusCode::SUCCESS) {
+                chip_id = id;
+            }
+        });
+    }
+
+    return chip_id;
+}
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.6/default/wifi.h b/wifi/1.6/default/wifi.h
new file mode 100644
index 0000000..435358e
--- /dev/null
+++ b/wifi/1.6/default/wifi.h
@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef WIFI_H_
+#define WIFI_H_
+
+// HACK: NAN is a macro defined in math.h, which can be included in various
+// headers. This wifi HAL uses an enum called NAN, which does not compile when
+// the macro is defined. Undefine NAN to work around it.
+#undef NAN
+#include <android/hardware/wifi/1.6/IWifi.h>
+
+#include <android-base/macros.h>
+#include <utils/Looper.h>
+#include <functional>
+
+#include "hidl_callback_util.h"
+#include "wifi_chip.h"
+#include "wifi_feature_flags.h"
+#include "wifi_legacy_hal.h"
+#include "wifi_legacy_hal_factory.h"
+#include "wifi_mode_controller.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+
+/**
+ * Root HIDL interface object used to control the Wifi HAL.
+ */
+class Wifi : public V1_6::IWifi {
+  public:
+    Wifi(const std::shared_ptr<wifi_system::InterfaceTool> iface_tool,
+         const std::shared_ptr<legacy_hal::WifiLegacyHalFactory> legacy_hal_factory,
+         const std::shared_ptr<mode_controller::WifiModeController> mode_controller,
+         const std::shared_ptr<feature_flags::WifiFeatureFlags> feature_flags);
+
+    bool isValid();
+
+    // HIDL methods exposed.
+    Return<void> registerEventCallback(const sp<V1_0::IWifiEventCallback>& event_callback,
+                                       registerEventCallback_cb hidl_status_cb) override;
+    Return<void> registerEventCallback_1_5(const sp<V1_5::IWifiEventCallback>& event_callback,
+                                           registerEventCallback_1_5_cb hidl_status_cb) override;
+    Return<bool> isStarted() override;
+    Return<void> start(start_cb hidl_status_cb) override;
+    Return<void> stop(stop_cb hidl_status_cb) override;
+    Return<void> getChipIds(getChipIds_cb hidl_status_cb) override;
+    Return<void> getChip(ChipId chip_id, getChip_cb hidl_status_cb) override;
+    Return<void> debug(const hidl_handle& handle, const hidl_vec<hidl_string>& options) override;
+
+  private:
+    enum class RunState { STOPPED, STARTED, STOPPING };
+
+    // Corresponding worker functions for the HIDL methods.
+    WifiStatus registerEventCallbackInternal(
+            const sp<V1_0::IWifiEventCallback>& event_callback __unused);
+    WifiStatus registerEventCallbackInternal_1_5(
+            const sp<V1_5::IWifiEventCallback>& event_callback);
+    WifiStatus startInternal();
+    WifiStatus stopInternal(std::unique_lock<std::recursive_mutex>* lock);
+    std::pair<WifiStatus, std::vector<ChipId>> getChipIdsInternal();
+    std::pair<WifiStatus, sp<V1_4::IWifiChip>> getChipInternal(ChipId chip_id);
+
+    WifiStatus initializeModeControllerAndLegacyHal();
+    WifiStatus stopLegacyHalAndDeinitializeModeController(
+            std::unique_lock<std::recursive_mutex>* lock);
+    ChipId getChipIdFromWifiChip(sp<WifiChip>& chip);
+
+    // Instance is created in this root level |IWifi| HIDL interface object
+    // and shared with all the child HIDL interface objects.
+    std::shared_ptr<wifi_system::InterfaceTool> iface_tool_;
+    std::shared_ptr<legacy_hal::WifiLegacyHalFactory> legacy_hal_factory_;
+    std::shared_ptr<mode_controller::WifiModeController> mode_controller_;
+    std::vector<std::shared_ptr<legacy_hal::WifiLegacyHal>> legacy_hals_;
+    std::shared_ptr<feature_flags::WifiFeatureFlags> feature_flags_;
+    RunState run_state_;
+    std::vector<sp<WifiChip>> chips_;
+    hidl_callback_util::HidlCallbackHandler<V1_5::IWifiEventCallback> event_cb_handler_;
+
+    DISALLOW_COPY_AND_ASSIGN(Wifi);
+};
+
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // WIFI_H_
diff --git a/wifi/1.6/default/wifi_ap_iface.cpp b/wifi/1.6/default/wifi_ap_iface.cpp
new file mode 100644
index 0000000..b2957db
--- /dev/null
+++ b/wifi/1.6/default/wifi_ap_iface.cpp
@@ -0,0 +1,204 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+
+#include "hidl_return_util.h"
+#include "hidl_struct_util.h"
+#include "wifi_ap_iface.h"
+#include "wifi_status_util.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+using hidl_return_util::validateAndCall;
+
+WifiApIface::WifiApIface(const std::string& ifname, const std::vector<std::string>& instances,
+                         const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
+                         const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util)
+    : ifname_(ifname),
+      instances_(instances),
+      legacy_hal_(legacy_hal),
+      iface_util_(iface_util),
+      is_valid_(true) {}
+
+void WifiApIface::invalidate() {
+    legacy_hal_.reset();
+    is_valid_ = false;
+}
+
+bool WifiApIface::isValid() {
+    return is_valid_;
+}
+
+std::string WifiApIface::getName() {
+    return ifname_;
+}
+
+void WifiApIface::removeInstance(std::string instance) {
+    instances_.erase(std::remove(instances_.begin(), instances_.end(), instance), instances_.end());
+}
+
+Return<void> WifiApIface::getName(getName_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiApIface::getNameInternal, hidl_status_cb);
+}
+
+Return<void> WifiApIface::getType(getType_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiApIface::getTypeInternal, hidl_status_cb);
+}
+
+Return<void> WifiApIface::setCountryCode(const hidl_array<int8_t, 2>& code,
+                                         setCountryCode_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiApIface::setCountryCodeInternal, hidl_status_cb, code);
+}
+
+Return<void> WifiApIface::getValidFrequenciesForBand(V1_0::WifiBand band,
+                                                     getValidFrequenciesForBand_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiApIface::getValidFrequenciesForBandInternal, hidl_status_cb, band);
+}
+
+Return<void> WifiApIface::setMacAddress(const hidl_array<uint8_t, 6>& mac,
+                                        setMacAddress_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiApIface::setMacAddressInternal, hidl_status_cb, mac);
+}
+
+Return<void> WifiApIface::getFactoryMacAddress(getFactoryMacAddress_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiApIface::getFactoryMacAddressInternal, hidl_status_cb,
+                           instances_.size() > 0 ? instances_[0] : ifname_);
+}
+
+Return<void> WifiApIface::resetToFactoryMacAddress(resetToFactoryMacAddress_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiApIface::resetToFactoryMacAddressInternal, hidl_status_cb);
+}
+
+Return<void> WifiApIface::getBridgedInstances(getBridgedInstances_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiApIface::getBridgedInstancesInternal, hidl_status_cb);
+}
+
+std::pair<WifiStatus, std::string> WifiApIface::getNameInternal() {
+    return {createWifiStatus(WifiStatusCode::SUCCESS), ifname_};
+}
+
+std::pair<WifiStatus, IfaceType> WifiApIface::getTypeInternal() {
+    return {createWifiStatus(WifiStatusCode::SUCCESS), IfaceType::AP};
+}
+
+WifiStatus WifiApIface::setCountryCodeInternal(const std::array<int8_t, 2>& code) {
+    legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->setCountryCode(
+            instances_.size() > 0 ? instances_[0] : ifname_, code);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+std::pair<WifiStatus, std::vector<WifiChannelInMhz>>
+WifiApIface::getValidFrequenciesForBandInternal(V1_0::WifiBand band) {
+    static_assert(sizeof(WifiChannelInMhz) == sizeof(uint32_t), "Size mismatch");
+    legacy_hal::wifi_error legacy_status;
+    std::vector<uint32_t> valid_frequencies;
+    std::tie(legacy_status, valid_frequencies) = legacy_hal_.lock()->getValidFrequenciesForBand(
+            instances_.size() > 0 ? instances_[0] : ifname_,
+            hidl_struct_util::convertHidlWifiBandToLegacy(band));
+    return {createWifiStatusFromLegacyError(legacy_status), valid_frequencies};
+}
+
+WifiStatus WifiApIface::setMacAddressInternal(const std::array<uint8_t, 6>& mac) {
+    // Support random MAC up to 2 interfaces
+    if (instances_.size() == 2) {
+        int rbyte = 1;
+        for (auto const& intf : instances_) {
+            std::array<uint8_t, 6> rmac = mac;
+            // reverse the bits to avoid collision
+            rmac[rbyte] = 0xff - rmac[rbyte];
+            if (!iface_util_.lock()->setMacAddress(intf, rmac)) {
+                LOG(INFO) << "Failed to set random mac address on " << intf;
+                return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+            }
+            rbyte++;
+        }
+    }
+    // It also needs to set mac address for bridged interface, otherwise the mac
+    // address of bridged interface will be changed after one of instance
+    // down.
+    if (!iface_util_.lock()->setMacAddress(ifname_, mac)) {
+        LOG(ERROR) << "Fail to config MAC for interface " << ifname_;
+        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+    }
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+std::pair<WifiStatus, std::array<uint8_t, 6>> WifiApIface::getFactoryMacAddressInternal(
+        const std::string& ifaceName) {
+    std::array<uint8_t, 6> mac = iface_util_.lock()->getFactoryMacAddress(ifaceName);
+    if (mac[0] == 0 && mac[1] == 0 && mac[2] == 0 && mac[3] == 0 && mac[4] == 0 && mac[5] == 0) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), mac};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), mac};
+}
+
+WifiStatus WifiApIface::resetToFactoryMacAddressInternal() {
+    std::pair<WifiStatus, std::array<uint8_t, 6>> getMacResult;
+    if (instances_.size() == 2) {
+        for (auto const& intf : instances_) {
+            getMacResult = getFactoryMacAddressInternal(intf);
+            LOG(DEBUG) << "Reset MAC to factory MAC on " << intf;
+            if (getMacResult.first.code != WifiStatusCode::SUCCESS ||
+                !iface_util_.lock()->setMacAddress(intf, getMacResult.second)) {
+                return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+            }
+        }
+        // It needs to set mac address for bridged interface, otherwise the mac
+        // address of the bridged interface will be changed after one of the
+        // instance down. Thus we are generating a random MAC address for the
+        // bridged interface even if we got the request to reset the Factory
+        // MAC. Since the bridged interface is an internal interface for the
+        // operation of bpf and others networking operation.
+        if (!iface_util_.lock()->setMacAddress(ifname_,
+                                               iface_util_.lock()->createRandomMacAddress())) {
+            LOG(ERROR) << "Fail to config MAC for bridged interface " << ifname_;
+            return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+        }
+    } else {
+        getMacResult = getFactoryMacAddressInternal(ifname_);
+        LOG(DEBUG) << "Reset MAC to factory MAC on " << ifname_;
+        if (getMacResult.first.code != WifiStatusCode::SUCCESS ||
+            !iface_util_.lock()->setMacAddress(ifname_, getMacResult.second)) {
+            return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+        }
+    }
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+std::pair<WifiStatus, std::vector<hidl_string>> WifiApIface::getBridgedInstancesInternal() {
+    std::vector<hidl_string> instances;
+    for (const auto& instance_name : instances_) {
+        instances.push_back(instance_name);
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), instances};
+}
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.6/default/wifi_ap_iface.h b/wifi/1.6/default/wifi_ap_iface.h
new file mode 100644
index 0000000..d1c0642
--- /dev/null
+++ b/wifi/1.6/default/wifi_ap_iface.h
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef WIFI_AP_IFACE_H_
+#define WIFI_AP_IFACE_H_
+
+#include <android-base/macros.h>
+#include <android/hardware/wifi/1.5/IWifiApIface.h>
+
+#include "wifi_iface_util.h"
+#include "wifi_legacy_hal.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+using namespace android::hardware::wifi::V1_0;
+
+/**
+ * HIDL interface object used to control a AP Iface instance.
+ */
+class WifiApIface : public V1_5::IWifiApIface {
+  public:
+    WifiApIface(const std::string& ifname, const std::vector<std::string>& instances,
+                const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
+                const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util);
+    // Refer to |WifiChip::invalidate()|.
+    void invalidate();
+    bool isValid();
+    std::string getName();
+    void removeInstance(std::string instance);
+
+    // HIDL methods exposed.
+    Return<void> getName(getName_cb hidl_status_cb) override;
+    Return<void> getType(getType_cb hidl_status_cb) override;
+    Return<void> setCountryCode(const hidl_array<int8_t, 2>& code,
+                                setCountryCode_cb hidl_status_cb) override;
+    Return<void> getValidFrequenciesForBand(V1_0::WifiBand band,
+                                            getValidFrequenciesForBand_cb hidl_status_cb) override;
+    Return<void> setMacAddress(const hidl_array<uint8_t, 6>& mac,
+                               setMacAddress_cb hidl_status_cb) override;
+    Return<void> getFactoryMacAddress(getFactoryMacAddress_cb hidl_status_cb) override;
+    Return<void> resetToFactoryMacAddress(resetToFactoryMacAddress_cb hidl_status_cb) override;
+
+    Return<void> getBridgedInstances(getBridgedInstances_cb hidl_status_cb) override;
+
+  private:
+    // Corresponding worker functions for the HIDL methods.
+    std::pair<WifiStatus, std::string> getNameInternal();
+    std::pair<WifiStatus, IfaceType> getTypeInternal();
+    WifiStatus setCountryCodeInternal(const std::array<int8_t, 2>& code);
+    std::pair<WifiStatus, std::vector<WifiChannelInMhz>> getValidFrequenciesForBandInternal(
+            V1_0::WifiBand band);
+    WifiStatus setMacAddressInternal(const std::array<uint8_t, 6>& mac);
+    std::pair<WifiStatus, std::array<uint8_t, 6>> getFactoryMacAddressInternal(
+            const std::string& ifaceName);
+    WifiStatus resetToFactoryMacAddressInternal();
+    std::pair<WifiStatus, std::vector<hidl_string>> getBridgedInstancesInternal();
+
+    std::string ifname_;
+    std::vector<std::string> instances_;
+    std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
+    std::weak_ptr<iface_util::WifiIfaceUtil> iface_util_;
+    bool is_valid_;
+
+    DISALLOW_COPY_AND_ASSIGN(WifiApIface);
+};
+
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // WIFI_AP_IFACE_H_
diff --git a/wifi/1.6/default/wifi_chip.cpp b/wifi/1.6/default/wifi_chip.cpp
new file mode 100644
index 0000000..c1ce766
--- /dev/null
+++ b/wifi/1.6/default/wifi_chip.cpp
@@ -0,0 +1,1903 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <fcntl.h>
+
+#include <android-base/logging.h>
+#include <android-base/unique_fd.h>
+#include <cutils/properties.h>
+#include <net/if.h>
+#include <sys/stat.h>
+#include <sys/sysmacros.h>
+
+#include "hidl_return_util.h"
+#include "hidl_struct_util.h"
+#include "wifi_chip.h"
+#include "wifi_status_util.h"
+
+#define P2P_MGMT_DEVICE_PREFIX "p2p-dev-"
+
+namespace {
+using android::sp;
+using android::base::unique_fd;
+using android::hardware::hidl_string;
+using android::hardware::hidl_vec;
+using android::hardware::wifi::V1_0::ChipModeId;
+using android::hardware::wifi::V1_0::IfaceType;
+using android::hardware::wifi::V1_0::IWifiChip;
+
+constexpr char kCpioMagic[] = "070701";
+constexpr size_t kMaxBufferSizeBytes = 1024 * 1024 * 3;
+constexpr uint32_t kMaxRingBufferFileAgeSeconds = 60 * 60 * 10;
+constexpr uint32_t kMaxRingBufferFileNum = 20;
+constexpr char kTombstoneFolderPath[] = "/data/vendor/tombstones/wifi/";
+constexpr char kActiveWlanIfaceNameProperty[] = "wifi.active.interface";
+constexpr char kNoActiveWlanIfaceNamePropertyValue[] = "";
+constexpr unsigned kMaxWlanIfaces = 5;
+constexpr char kApBridgeIfacePrefix[] = "ap_br_";
+
+template <typename Iface>
+void invalidateAndClear(std::vector<sp<Iface>>& ifaces, sp<Iface> iface) {
+    iface->invalidate();
+    ifaces.erase(std::remove(ifaces.begin(), ifaces.end(), iface), ifaces.end());
+}
+
+template <typename Iface>
+void invalidateAndClearAll(std::vector<sp<Iface>>& ifaces) {
+    for (const auto& iface : ifaces) {
+        iface->invalidate();
+    }
+    ifaces.clear();
+}
+
+template <typename Iface>
+std::vector<hidl_string> getNames(std::vector<sp<Iface>>& ifaces) {
+    std::vector<hidl_string> names;
+    for (const auto& iface : ifaces) {
+        names.emplace_back(iface->getName());
+    }
+    return names;
+}
+
+template <typename Iface>
+sp<Iface> findUsingName(std::vector<sp<Iface>>& ifaces, const std::string& name) {
+    std::vector<hidl_string> names;
+    for (const auto& iface : ifaces) {
+        if (name == iface->getName()) {
+            return iface;
+        }
+    }
+    return nullptr;
+}
+
+std::string getWlanIfaceName(unsigned idx) {
+    if (idx >= kMaxWlanIfaces) {
+        CHECK(false) << "Requested interface beyond wlan" << kMaxWlanIfaces;
+        return {};
+    }
+
+    std::array<char, PROPERTY_VALUE_MAX> buffer;
+    if (idx == 0 || idx == 1) {
+        const char* altPropName = (idx == 0) ? "wifi.interface" : "wifi.concurrent.interface";
+        auto res = property_get(altPropName, buffer.data(), nullptr);
+        if (res > 0) return buffer.data();
+    }
+    std::string propName = "wifi.interface." + std::to_string(idx);
+    auto res = property_get(propName.c_str(), buffer.data(), nullptr);
+    if (res > 0) return buffer.data();
+
+    return "wlan" + std::to_string(idx);
+}
+
+// Returns the dedicated iface name if defined.
+// Returns two ifaces in bridged mode.
+std::vector<std::string> getPredefinedApIfaceNames(bool is_bridged) {
+    std::vector<std::string> ifnames;
+    std::array<char, PROPERTY_VALUE_MAX> buffer;
+    buffer.fill(0);
+    if (property_get("ro.vendor.wifi.sap.interface", buffer.data(), nullptr) == 0) {
+        return ifnames;
+    }
+    ifnames.push_back(buffer.data());
+    if (is_bridged) {
+        buffer.fill(0);
+        if (property_get("ro.vendor.wifi.sap.concurrent.iface", buffer.data(), nullptr) == 0) {
+            return ifnames;
+        }
+        ifnames.push_back(buffer.data());
+    }
+    return ifnames;
+}
+
+std::string getPredefinedP2pIfaceName() {
+    std::array<char, PROPERTY_VALUE_MAX> primaryIfaceName;
+    char p2pParentIfname[100];
+    std::string p2pDevIfName = "";
+    std::array<char, PROPERTY_VALUE_MAX> buffer;
+    property_get("wifi.direct.interface", buffer.data(), "p2p0");
+    if (strncmp(buffer.data(), P2P_MGMT_DEVICE_PREFIX, strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
+        /* Get the p2p parent interface name from p2p device interface name set
+         * in property */
+        strncpy(p2pParentIfname, buffer.data() + strlen(P2P_MGMT_DEVICE_PREFIX),
+                strlen(buffer.data()) - strlen(P2P_MGMT_DEVICE_PREFIX));
+        if (property_get(kActiveWlanIfaceNameProperty, primaryIfaceName.data(), nullptr) == 0) {
+            return buffer.data();
+        }
+        /* Check if the parent interface derived from p2p device interface name
+         * is active */
+        if (strncmp(p2pParentIfname, primaryIfaceName.data(),
+                    strlen(buffer.data()) - strlen(P2P_MGMT_DEVICE_PREFIX)) != 0) {
+            /*
+             * Update the predefined p2p device interface parent interface name
+             * with current active wlan interface
+             */
+            p2pDevIfName += P2P_MGMT_DEVICE_PREFIX;
+            p2pDevIfName += primaryIfaceName.data();
+            LOG(INFO) << "update the p2p device interface name to " << p2pDevIfName.c_str();
+            return p2pDevIfName;
+        }
+    }
+    return buffer.data();
+}
+
+// Returns the dedicated iface name if one is defined.
+std::string getPredefinedNanIfaceName() {
+    std::array<char, PROPERTY_VALUE_MAX> buffer;
+    if (property_get("wifi.aware.interface", buffer.data(), nullptr) == 0) {
+        return {};
+    }
+    return buffer.data();
+}
+
+void setActiveWlanIfaceNameProperty(const std::string& ifname) {
+    auto res = property_set(kActiveWlanIfaceNameProperty, ifname.data());
+    if (res != 0) {
+        PLOG(ERROR) << "Failed to set active wlan iface name property";
+    }
+}
+
+// delete files that meet either conditions:
+// 1. older than a predefined time in the wifi tombstone dir.
+// 2. Files in excess to a predefined amount, starting from the oldest ones
+bool removeOldFilesInternal() {
+    time_t now = time(0);
+    const time_t delete_files_before = now - kMaxRingBufferFileAgeSeconds;
+    std::unique_ptr<DIR, decltype(&closedir)> dir_dump(opendir(kTombstoneFolderPath), closedir);
+    if (!dir_dump) {
+        PLOG(ERROR) << "Failed to open directory";
+        return false;
+    }
+    struct dirent* dp;
+    bool success = true;
+    std::list<std::pair<const time_t, std::string>> valid_files;
+    while ((dp = readdir(dir_dump.get()))) {
+        if (dp->d_type != DT_REG) {
+            continue;
+        }
+        std::string cur_file_name(dp->d_name);
+        struct stat cur_file_stat;
+        std::string cur_file_path = kTombstoneFolderPath + cur_file_name;
+        if (stat(cur_file_path.c_str(), &cur_file_stat) == -1) {
+            PLOG(ERROR) << "Failed to get file stat for " << cur_file_path;
+            success = false;
+            continue;
+        }
+        const time_t cur_file_time = cur_file_stat.st_mtime;
+        valid_files.push_back(std::pair<const time_t, std::string>(cur_file_time, cur_file_path));
+    }
+    valid_files.sort();  // sort the list of files by last modified time from
+                         // small to big.
+    uint32_t cur_file_count = valid_files.size();
+    for (auto cur_file : valid_files) {
+        if (cur_file_count > kMaxRingBufferFileNum || cur_file.first < delete_files_before) {
+            if (unlink(cur_file.second.c_str()) != 0) {
+                PLOG(ERROR) << "Error deleting file";
+                success = false;
+            }
+            cur_file_count--;
+        } else {
+            break;
+        }
+    }
+    return success;
+}
+
+// Helper function for |cpioArchiveFilesInDir|
+bool cpioWriteHeader(int out_fd, struct stat& st, const char* file_name, size_t file_name_len) {
+    std::array<char, 32 * 1024> read_buf;
+    ssize_t llen =
+            sprintf(read_buf.data(), "%s%08X%08X%08X%08X%08X%08X%08X%08X%08X%08X%08X%08X%08X",
+                    kCpioMagic, static_cast<int>(st.st_ino), st.st_mode, st.st_uid, st.st_gid,
+                    static_cast<int>(st.st_nlink), static_cast<int>(st.st_mtime),
+                    static_cast<int>(st.st_size), major(st.st_dev), minor(st.st_dev),
+                    major(st.st_rdev), minor(st.st_rdev), static_cast<uint32_t>(file_name_len), 0);
+    if (write(out_fd, read_buf.data(), llen) == -1) {
+        PLOG(ERROR) << "Error writing cpio header to file " << file_name;
+        return false;
+    }
+    if (write(out_fd, file_name, file_name_len) == -1) {
+        PLOG(ERROR) << "Error writing filename to file " << file_name;
+        return false;
+    }
+
+    // NUL Pad header up to 4 multiple bytes.
+    llen = (llen + file_name_len) % 4;
+    if (llen != 0) {
+        const uint32_t zero = 0;
+        if (write(out_fd, &zero, 4 - llen) == -1) {
+            PLOG(ERROR) << "Error padding 0s to file " << file_name;
+            return false;
+        }
+    }
+    return true;
+}
+
+// Helper function for |cpioArchiveFilesInDir|
+size_t cpioWriteFileContent(int fd_read, int out_fd, struct stat& st) {
+    // writing content of file
+    std::array<char, 32 * 1024> read_buf;
+    ssize_t llen = st.st_size;
+    size_t n_error = 0;
+    while (llen > 0) {
+        ssize_t bytes_read = read(fd_read, read_buf.data(), read_buf.size());
+        if (bytes_read == -1) {
+            PLOG(ERROR) << "Error reading file";
+            return ++n_error;
+        }
+        llen -= bytes_read;
+        if (write(out_fd, read_buf.data(), bytes_read) == -1) {
+            PLOG(ERROR) << "Error writing data to file";
+            return ++n_error;
+        }
+        if (bytes_read == 0) {  // this should never happen, but just in case
+                                // to unstuck from while loop
+            PLOG(ERROR) << "Unexpected read result";
+            n_error++;
+            break;
+        }
+    }
+    llen = st.st_size % 4;
+    if (llen != 0) {
+        const uint32_t zero = 0;
+        if (write(out_fd, &zero, 4 - llen) == -1) {
+            PLOG(ERROR) << "Error padding 0s to file";
+            return ++n_error;
+        }
+    }
+    return n_error;
+}
+
+// Helper function for |cpioArchiveFilesInDir|
+bool cpioWriteFileTrailer(int out_fd) {
+    std::array<char, 4096> read_buf;
+    read_buf.fill(0);
+    if (write(out_fd, read_buf.data(),
+              sprintf(read_buf.data(), "070701%040X%056X%08XTRAILER!!!", 1, 0x0b, 0) + 4) == -1) {
+        PLOG(ERROR) << "Error writing trailing bytes";
+        return false;
+    }
+    return true;
+}
+
+// Archives all files in |input_dir| and writes result into |out_fd|
+// Logic obtained from //external/toybox/toys/posix/cpio.c "Output cpio archive"
+// portion
+size_t cpioArchiveFilesInDir(int out_fd, const char* input_dir) {
+    struct dirent* dp;
+    size_t n_error = 0;
+    std::unique_ptr<DIR, decltype(&closedir)> dir_dump(opendir(input_dir), closedir);
+    if (!dir_dump) {
+        PLOG(ERROR) << "Failed to open directory";
+        return ++n_error;
+    }
+    while ((dp = readdir(dir_dump.get()))) {
+        if (dp->d_type != DT_REG) {
+            continue;
+        }
+        std::string cur_file_name(dp->d_name);
+        struct stat st;
+        const std::string cur_file_path = kTombstoneFolderPath + cur_file_name;
+        if (stat(cur_file_path.c_str(), &st) == -1) {
+            PLOG(ERROR) << "Failed to get file stat for " << cur_file_path;
+            n_error++;
+            continue;
+        }
+        const int fd_read = open(cur_file_path.c_str(), O_RDONLY);
+        if (fd_read == -1) {
+            PLOG(ERROR) << "Failed to open file " << cur_file_path;
+            n_error++;
+            continue;
+        }
+        std::string file_name_with_last_modified_time =
+                cur_file_name + "-" + std::to_string(st.st_mtime);
+        // string.size() does not include the null terminator. The cpio FreeBSD
+        // file header expects the null character to be included in the length.
+        const size_t file_name_len = file_name_with_last_modified_time.size() + 1;
+        unique_fd file_auto_closer(fd_read);
+        if (!cpioWriteHeader(out_fd, st, file_name_with_last_modified_time.c_str(),
+                             file_name_len)) {
+            return ++n_error;
+        }
+        size_t write_error = cpioWriteFileContent(fd_read, out_fd, st);
+        if (write_error) {
+            return n_error + write_error;
+        }
+    }
+    if (!cpioWriteFileTrailer(out_fd)) {
+        return ++n_error;
+    }
+    return n_error;
+}
+
+// Helper function to create a non-const char*.
+std::vector<char> makeCharVec(const std::string& str) {
+    std::vector<char> vec(str.size() + 1);
+    vec.assign(str.begin(), str.end());
+    vec.push_back('\0');
+    return vec;
+}
+
+}  // namespace
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+using hidl_return_util::validateAndCall;
+using hidl_return_util::validateAndCallWithLock;
+
+WifiChip::WifiChip(ChipId chip_id, bool is_primary,
+                   const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
+                   const std::weak_ptr<mode_controller::WifiModeController> mode_controller,
+                   const std::shared_ptr<iface_util::WifiIfaceUtil> iface_util,
+                   const std::weak_ptr<feature_flags::WifiFeatureFlags> feature_flags,
+                   const std::function<void(const std::string&)>& handler)
+    : chip_id_(chip_id),
+      legacy_hal_(legacy_hal),
+      mode_controller_(mode_controller),
+      iface_util_(iface_util),
+      is_valid_(true),
+      current_mode_id_(feature_flags::chip_mode_ids::kInvalid),
+      modes_(feature_flags.lock()->getChipModes(is_primary)),
+      debug_ring_buffer_cb_registered_(false),
+      subsystemCallbackHandler_(handler) {
+    setActiveWlanIfaceNameProperty(kNoActiveWlanIfaceNamePropertyValue);
+}
+
+void WifiChip::invalidate() {
+    if (!writeRingbufferFilesInternal()) {
+        LOG(ERROR) << "Error writing files to flash";
+    }
+    invalidateAndRemoveAllIfaces();
+    setActiveWlanIfaceNameProperty(kNoActiveWlanIfaceNamePropertyValue);
+    legacy_hal_.reset();
+    event_cb_handler_.invalidate();
+    is_valid_ = false;
+}
+
+bool WifiChip::isValid() {
+    return is_valid_;
+}
+
+std::set<sp<V1_4::IWifiChipEventCallback>> WifiChip::getEventCallbacks() {
+    return event_cb_handler_.getCallbacks();
+}
+
+Return<void> WifiChip::getId(getId_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID, &WifiChip::getIdInternal,
+                           hidl_status_cb);
+}
+
+// Deprecated support for this callback
+Return<void> WifiChip::registerEventCallback(const sp<V1_0::IWifiChipEventCallback>& event_callback,
+                                             registerEventCallback_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::registerEventCallbackInternal, hidl_status_cb,
+                           event_callback);
+}
+
+Return<void> WifiChip::getCapabilities(getCapabilities_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getCapabilitiesInternal, hidl_status_cb);
+}
+
+Return<void> WifiChip::getAvailableModes(getAvailableModes_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getAvailableModesInternal, hidl_status_cb);
+}
+
+Return<void> WifiChip::configureChip(ChipModeId mode_id, configureChip_cb hidl_status_cb) {
+    return validateAndCallWithLock(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                                   &WifiChip::configureChipInternal, hidl_status_cb, mode_id);
+}
+
+Return<void> WifiChip::getMode(getMode_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getModeInternal, hidl_status_cb);
+}
+
+Return<void> WifiChip::requestChipDebugInfo(requestChipDebugInfo_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::requestChipDebugInfoInternal, hidl_status_cb);
+}
+
+Return<void> WifiChip::requestDriverDebugDump(requestDriverDebugDump_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::requestDriverDebugDumpInternal, hidl_status_cb);
+}
+
+Return<void> WifiChip::requestFirmwareDebugDump(requestFirmwareDebugDump_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::requestFirmwareDebugDumpInternal, hidl_status_cb);
+}
+
+Return<void> WifiChip::createApIface(createApIface_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::createApIfaceInternal, hidl_status_cb);
+}
+
+Return<void> WifiChip::createBridgedApIface(createBridgedApIface_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::createBridgedApIfaceInternal, hidl_status_cb);
+}
+
+Return<void> WifiChip::getApIfaceNames(getApIfaceNames_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getApIfaceNamesInternal, hidl_status_cb);
+}
+
+Return<void> WifiChip::getApIface(const hidl_string& ifname, getApIface_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getApIfaceInternal, hidl_status_cb, ifname);
+}
+
+Return<void> WifiChip::removeApIface(const hidl_string& ifname, removeApIface_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::removeApIfaceInternal, hidl_status_cb, ifname);
+}
+
+Return<void> WifiChip::removeIfaceInstanceFromBridgedApIface(
+        const hidl_string& ifname, const hidl_string& ifInstanceName,
+        removeIfaceInstanceFromBridgedApIface_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::removeIfaceInstanceFromBridgedApIfaceInternal, hidl_status_cb,
+                           ifname, ifInstanceName);
+}
+
+Return<void> WifiChip::createNanIface(createNanIface_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::createNanIfaceInternal, hidl_status_cb);
+}
+
+Return<void> WifiChip::getNanIfaceNames(getNanIfaceNames_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getNanIfaceNamesInternal, hidl_status_cb);
+}
+
+Return<void> WifiChip::getNanIface(const hidl_string& ifname, getNanIface_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getNanIfaceInternal, hidl_status_cb, ifname);
+}
+
+Return<void> WifiChip::removeNanIface(const hidl_string& ifname, removeNanIface_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::removeNanIfaceInternal, hidl_status_cb, ifname);
+}
+
+Return<void> WifiChip::createP2pIface(createP2pIface_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::createP2pIfaceInternal, hidl_status_cb);
+}
+
+Return<void> WifiChip::getP2pIfaceNames(getP2pIfaceNames_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getP2pIfaceNamesInternal, hidl_status_cb);
+}
+
+Return<void> WifiChip::getP2pIface(const hidl_string& ifname, getP2pIface_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getP2pIfaceInternal, hidl_status_cb, ifname);
+}
+
+Return<void> WifiChip::removeP2pIface(const hidl_string& ifname, removeP2pIface_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::removeP2pIfaceInternal, hidl_status_cb, ifname);
+}
+
+Return<void> WifiChip::createStaIface(createStaIface_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::createStaIfaceInternal, hidl_status_cb);
+}
+
+Return<void> WifiChip::getStaIfaceNames(getStaIfaceNames_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getStaIfaceNamesInternal, hidl_status_cb);
+}
+
+Return<void> WifiChip::getStaIface(const hidl_string& ifname, getStaIface_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getStaIfaceInternal, hidl_status_cb, ifname);
+}
+
+Return<void> WifiChip::removeStaIface(const hidl_string& ifname, removeStaIface_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::removeStaIfaceInternal, hidl_status_cb, ifname);
+}
+
+Return<void> WifiChip::createRttController(const sp<IWifiIface>& bound_iface,
+                                           createRttController_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::createRttControllerInternal, hidl_status_cb, bound_iface);
+}
+
+Return<void> WifiChip::getDebugRingBuffersStatus(getDebugRingBuffersStatus_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getDebugRingBuffersStatusInternal, hidl_status_cb);
+}
+
+Return<void> WifiChip::startLoggingToDebugRingBuffer(
+        const hidl_string& ring_name, WifiDebugRingBufferVerboseLevel verbose_level,
+        uint32_t max_interval_in_sec, uint32_t min_data_size_in_bytes,
+        startLoggingToDebugRingBuffer_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::startLoggingToDebugRingBufferInternal, hidl_status_cb,
+                           ring_name, verbose_level, max_interval_in_sec, min_data_size_in_bytes);
+}
+
+Return<void> WifiChip::forceDumpToDebugRingBuffer(const hidl_string& ring_name,
+                                                  forceDumpToDebugRingBuffer_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::forceDumpToDebugRingBufferInternal, hidl_status_cb,
+                           ring_name);
+}
+
+Return<void> WifiChip::flushRingBufferToFile(flushRingBufferToFile_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::flushRingBufferToFileInternal, hidl_status_cb);
+}
+
+Return<void> WifiChip::stopLoggingToDebugRingBuffer(
+        stopLoggingToDebugRingBuffer_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::stopLoggingToDebugRingBufferInternal, hidl_status_cb);
+}
+
+Return<void> WifiChip::getDebugHostWakeReasonStats(getDebugHostWakeReasonStats_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getDebugHostWakeReasonStatsInternal, hidl_status_cb);
+}
+
+Return<void> WifiChip::enableDebugErrorAlerts(bool enable,
+                                              enableDebugErrorAlerts_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::enableDebugErrorAlertsInternal, hidl_status_cb, enable);
+}
+
+Return<void> WifiChip::selectTxPowerScenario(V1_1::IWifiChip::TxPowerScenario scenario,
+                                             selectTxPowerScenario_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::selectTxPowerScenarioInternal, hidl_status_cb, scenario);
+}
+
+Return<void> WifiChip::resetTxPowerScenario(resetTxPowerScenario_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::resetTxPowerScenarioInternal, hidl_status_cb);
+}
+
+Return<void> WifiChip::setLatencyMode(LatencyMode mode, setLatencyMode_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::setLatencyModeInternal, hidl_status_cb, mode);
+}
+
+Return<void> WifiChip::registerEventCallback_1_2(
+        const sp<V1_2::IWifiChipEventCallback>& event_callback,
+        registerEventCallback_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::registerEventCallbackInternal_1_2, hidl_status_cb,
+                           event_callback);
+}
+
+Return<void> WifiChip::selectTxPowerScenario_1_2(TxPowerScenario scenario,
+                                                 selectTxPowerScenario_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::selectTxPowerScenarioInternal_1_2, hidl_status_cb, scenario);
+}
+
+Return<void> WifiChip::getCapabilities_1_3(getCapabilities_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getCapabilitiesInternal_1_3, hidl_status_cb);
+}
+
+Return<void> WifiChip::getCapabilities_1_5(getCapabilities_1_5_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getCapabilitiesInternal_1_5, hidl_status_cb);
+}
+
+Return<void> WifiChip::debug(const hidl_handle& handle, const hidl_vec<hidl_string>&) {
+    if (handle != nullptr && handle->numFds >= 1) {
+        {
+            std::unique_lock<std::mutex> lk(lock_t);
+            for (const auto& item : ringbuffer_map_) {
+                forceDumpToDebugRingBufferInternal(item.first);
+            }
+            // unique_lock unlocked here
+        }
+        usleep(100 * 1000);  // sleep for 100 milliseconds to wait for
+                             // ringbuffer updates.
+        int fd = handle->data[0];
+        if (!writeRingbufferFilesInternal()) {
+            LOG(ERROR) << "Error writing files to flash";
+        }
+        uint32_t n_error = cpioArchiveFilesInDir(fd, kTombstoneFolderPath);
+        if (n_error != 0) {
+            LOG(ERROR) << n_error << " errors occured in cpio function";
+        }
+        fsync(fd);
+    } else {
+        LOG(ERROR) << "File handle error";
+    }
+    return Void();
+}
+
+Return<void> WifiChip::createRttController_1_4(const sp<IWifiIface>& bound_iface,
+                                               createRttController_1_4_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::createRttControllerInternal_1_4, hidl_status_cb, bound_iface);
+}
+
+Return<void> WifiChip::registerEventCallback_1_4(
+        const sp<V1_4::IWifiChipEventCallback>& event_callback,
+        registerEventCallback_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::registerEventCallbackInternal_1_4, hidl_status_cb,
+                           event_callback);
+}
+
+Return<void> WifiChip::setMultiStaPrimaryConnection(
+        const hidl_string& ifname, setMultiStaPrimaryConnection_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::setMultiStaPrimaryConnectionInternal, hidl_status_cb, ifname);
+}
+
+Return<void> WifiChip::setMultiStaUseCase(MultiStaUseCase use_case,
+                                          setMultiStaUseCase_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::setMultiStaUseCaseInternal, hidl_status_cb, use_case);
+}
+
+Return<void> WifiChip::setCoexUnsafeChannels(const hidl_vec<CoexUnsafeChannel>& unsafeChannels,
+                                             hidl_bitfield<CoexRestriction> restrictions,
+                                             setCoexUnsafeChannels_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::setCoexUnsafeChannelsInternal, hidl_status_cb, unsafeChannels,
+                           restrictions);
+}
+
+Return<void> WifiChip::setCountryCode(const hidl_array<int8_t, 2>& code,
+                                      setCountryCode_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiChip::setCountryCodeInternal, hidl_status_cb, code);
+}
+
+Return<void> WifiChip::getUsableChannels(
+        WifiBand band, hidl_bitfield<V1_5::WifiIfaceMode> ifaceModeMask,
+        hidl_bitfield<V1_5::IWifiChip::UsableChannelFilter> filterMask,
+        getUsableChannels_cb _hidl_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getUsableChannelsInternal, _hidl_cb, band, ifaceModeMask,
+                           filterMask);
+}
+
+Return<void> WifiChip::triggerSubsystemRestart(triggerSubsystemRestart_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::triggerSubsystemRestartInternal, hidl_status_cb);
+}
+
+void WifiChip::invalidateAndRemoveAllIfaces() {
+    invalidateAndClearBridgedApAll();
+    invalidateAndClearAll(ap_ifaces_);
+    invalidateAndClearAll(nan_ifaces_);
+    invalidateAndClearAll(p2p_ifaces_);
+    invalidateAndClearAll(sta_ifaces_);
+    // Since all the ifaces are invalid now, all RTT controller objects
+    // using those ifaces also need to be invalidated.
+    for (const auto& rtt : rtt_controllers_) {
+        rtt->invalidate();
+    }
+    rtt_controllers_.clear();
+}
+
+void WifiChip::invalidateAndRemoveDependencies(const std::string& removed_iface_name) {
+    for (auto it = nan_ifaces_.begin(); it != nan_ifaces_.end();) {
+        auto nan_iface = *it;
+        if (nan_iface->getName() == removed_iface_name) {
+            nan_iface->invalidate();
+            for (const auto& callback : event_cb_handler_.getCallbacks()) {
+                if (!callback->onIfaceRemoved(IfaceType::NAN, removed_iface_name).isOk()) {
+                    LOG(ERROR) << "Failed to invoke onIfaceRemoved callback";
+                }
+            }
+            it = nan_ifaces_.erase(it);
+        } else {
+            ++it;
+        }
+    }
+
+    for (auto it = rtt_controllers_.begin(); it != rtt_controllers_.end();) {
+        auto rtt = *it;
+        if (rtt->getIfaceName() == removed_iface_name) {
+            rtt->invalidate();
+            it = rtt_controllers_.erase(it);
+        } else {
+            ++it;
+        }
+    }
+}
+
+std::pair<WifiStatus, ChipId> WifiChip::getIdInternal() {
+    return {createWifiStatus(WifiStatusCode::SUCCESS), chip_id_};
+}
+
+WifiStatus WifiChip::registerEventCallbackInternal(
+        const sp<V1_0::IWifiChipEventCallback>& /* event_callback */) {
+    // Deprecated support for this callback.
+    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
+}
+
+std::pair<WifiStatus, uint32_t> WifiChip::getCapabilitiesInternal() {
+    // Deprecated support for this callback.
+    return {createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED), 0};
+}
+
+std::pair<WifiStatus, std::vector<V1_4::IWifiChip::ChipMode>>
+WifiChip::getAvailableModesInternal() {
+    return {createWifiStatus(WifiStatusCode::SUCCESS), modes_};
+}
+
+WifiStatus WifiChip::configureChipInternal(
+        /* NONNULL */ std::unique_lock<std::recursive_mutex>* lock, ChipModeId mode_id) {
+    if (!isValidModeId(mode_id)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    if (mode_id == current_mode_id_) {
+        LOG(DEBUG) << "Already in the specified mode " << mode_id;
+        return createWifiStatus(WifiStatusCode::SUCCESS);
+    }
+    WifiStatus status = handleChipConfiguration(lock, mode_id);
+    if (status.code != WifiStatusCode::SUCCESS) {
+        for (const auto& callback : event_cb_handler_.getCallbacks()) {
+            if (!callback->onChipReconfigureFailure(status).isOk()) {
+                LOG(ERROR) << "Failed to invoke onChipReconfigureFailure callback";
+            }
+        }
+        return status;
+    }
+    for (const auto& callback : event_cb_handler_.getCallbacks()) {
+        if (!callback->onChipReconfigured(mode_id).isOk()) {
+            LOG(ERROR) << "Failed to invoke onChipReconfigured callback";
+        }
+    }
+    current_mode_id_ = mode_id;
+    LOG(INFO) << "Configured chip in mode " << mode_id;
+    setActiveWlanIfaceNameProperty(getFirstActiveWlanIfaceName());
+
+    legacy_hal_.lock()->registerSubsystemRestartCallbackHandler(subsystemCallbackHandler_);
+
+    return status;
+}
+
+std::pair<WifiStatus, uint32_t> WifiChip::getModeInternal() {
+    if (!isValidModeId(current_mode_id_)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), current_mode_id_};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), current_mode_id_};
+}
+
+std::pair<WifiStatus, V1_4::IWifiChip::ChipDebugInfo> WifiChip::requestChipDebugInfoInternal() {
+    V1_4::IWifiChip::ChipDebugInfo result;
+    legacy_hal::wifi_error legacy_status;
+    std::string driver_desc;
+    const auto ifname = getFirstActiveWlanIfaceName();
+    std::tie(legacy_status, driver_desc) = legacy_hal_.lock()->getDriverVersion(ifname);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        LOG(ERROR) << "Failed to get driver version: " << legacyErrorToString(legacy_status);
+        WifiStatus status =
+                createWifiStatusFromLegacyError(legacy_status, "failed to get driver version");
+        return {status, result};
+    }
+    result.driverDescription = driver_desc.c_str();
+
+    std::string firmware_desc;
+    std::tie(legacy_status, firmware_desc) = legacy_hal_.lock()->getFirmwareVersion(ifname);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        LOG(ERROR) << "Failed to get firmware version: " << legacyErrorToString(legacy_status);
+        WifiStatus status =
+                createWifiStatusFromLegacyError(legacy_status, "failed to get firmware version");
+        return {status, result};
+    }
+    result.firmwareDescription = firmware_desc.c_str();
+
+    return {createWifiStatus(WifiStatusCode::SUCCESS), result};
+}
+
+std::pair<WifiStatus, std::vector<uint8_t>> WifiChip::requestDriverDebugDumpInternal() {
+    legacy_hal::wifi_error legacy_status;
+    std::vector<uint8_t> driver_dump;
+    std::tie(legacy_status, driver_dump) =
+            legacy_hal_.lock()->requestDriverMemoryDump(getFirstActiveWlanIfaceName());
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        LOG(ERROR) << "Failed to get driver debug dump: " << legacyErrorToString(legacy_status);
+        return {createWifiStatusFromLegacyError(legacy_status), std::vector<uint8_t>()};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), driver_dump};
+}
+
+std::pair<WifiStatus, std::vector<uint8_t>> WifiChip::requestFirmwareDebugDumpInternal() {
+    legacy_hal::wifi_error legacy_status;
+    std::vector<uint8_t> firmware_dump;
+    std::tie(legacy_status, firmware_dump) =
+            legacy_hal_.lock()->requestFirmwareMemoryDump(getFirstActiveWlanIfaceName());
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        LOG(ERROR) << "Failed to get firmware debug dump: " << legacyErrorToString(legacy_status);
+        return {createWifiStatusFromLegacyError(legacy_status), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), firmware_dump};
+}
+
+WifiStatus WifiChip::createVirtualApInterface(const std::string& apVirtIf) {
+    legacy_hal::wifi_error legacy_status;
+    legacy_status = legacy_hal_.lock()->createVirtualInterface(
+            apVirtIf, hidl_struct_util::convertHidlIfaceTypeToLegacy(IfaceType::AP));
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        LOG(ERROR) << "Failed to add interface: " << apVirtIf << " "
+                   << legacyErrorToString(legacy_status);
+        return createWifiStatusFromLegacyError(legacy_status);
+    }
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+sp<WifiApIface> WifiChip::newWifiApIface(std::string& ifname) {
+    std::vector<std::string> ap_instances;
+    for (auto const& it : br_ifaces_ap_instances_) {
+        if (it.first == ifname) {
+            ap_instances = it.second;
+        }
+    }
+    sp<WifiApIface> iface = new WifiApIface(ifname, ap_instances, legacy_hal_, iface_util_);
+    ap_ifaces_.push_back(iface);
+    for (const auto& callback : event_cb_handler_.getCallbacks()) {
+        if (!callback->onIfaceAdded(IfaceType::AP, ifname).isOk()) {
+            LOG(ERROR) << "Failed to invoke onIfaceAdded callback";
+        }
+    }
+    setActiveWlanIfaceNameProperty(getFirstActiveWlanIfaceName());
+    return iface;
+}
+
+std::pair<WifiStatus, sp<V1_5::IWifiApIface>> WifiChip::createApIfaceInternal() {
+    if (!canCurrentModeSupportIfaceOfTypeWithCurrentIfaces(IfaceType::AP)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
+    }
+    std::string ifname = allocateApIfaceName();
+    WifiStatus status = createVirtualApInterface(ifname);
+    if (status.code != WifiStatusCode::SUCCESS) {
+        return {status, {}};
+    }
+    sp<WifiApIface> iface = newWifiApIface(ifname);
+    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
+}
+
+std::pair<WifiStatus, sp<V1_5::IWifiApIface>> WifiChip::createBridgedApIfaceInternal() {
+    if (!canCurrentModeSupportIfaceOfTypeWithCurrentIfaces(IfaceType::AP)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
+    }
+    std::vector<std::string> ap_instances = allocateBridgedApInstanceNames();
+    if (ap_instances.size() < 2) {
+        LOG(ERROR) << "Fail to allocate two instances";
+        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
+    }
+    std::string br_ifname = kApBridgeIfacePrefix + ap_instances[0];
+    for (int i = 0; i < 2; i++) {
+        WifiStatus status = createVirtualApInterface(ap_instances[i]);
+        if (status.code != WifiStatusCode::SUCCESS) {
+            if (i != 0) {  // The failure happened when creating second virtual
+                           // iface.
+                legacy_hal_.lock()->deleteVirtualInterface(
+                        ap_instances.front());  // Remove the first virtual iface.
+            }
+            return {status, {}};
+        }
+    }
+    br_ifaces_ap_instances_[br_ifname] = ap_instances;
+    if (!iface_util_->createBridge(br_ifname)) {
+        LOG(ERROR) << "Failed createBridge - br_name=" << br_ifname.c_str();
+        invalidateAndClearBridgedAp(br_ifname);
+        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
+    }
+    for (auto const& instance : ap_instances) {
+        // Bind ap instance interface to AP bridge
+        if (!iface_util_->addIfaceToBridge(br_ifname, instance)) {
+            LOG(ERROR) << "Failed add if to Bridge - if_name=" << instance.c_str();
+            invalidateAndClearBridgedAp(br_ifname);
+            return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
+        }
+    }
+    sp<WifiApIface> iface = newWifiApIface(br_ifname);
+    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
+}
+
+std::pair<WifiStatus, std::vector<hidl_string>> WifiChip::getApIfaceNamesInternal() {
+    if (ap_ifaces_.empty()) {
+        return {createWifiStatus(WifiStatusCode::SUCCESS), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), getNames(ap_ifaces_)};
+}
+
+std::pair<WifiStatus, sp<V1_5::IWifiApIface>> WifiChip::getApIfaceInternal(
+        const std::string& ifname) {
+    const auto iface = findUsingName(ap_ifaces_, ifname);
+    if (!iface.get()) {
+        return {createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS), nullptr};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
+}
+
+WifiStatus WifiChip::removeApIfaceInternal(const std::string& ifname) {
+    const auto iface = findUsingName(ap_ifaces_, ifname);
+    if (!iface.get()) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    // Invalidate & remove any dependent objects first.
+    // Note: This is probably not required because we never create
+    // nan/rtt objects over AP iface. But, there is no harm to do it
+    // here and not make that assumption all over the place.
+    invalidateAndRemoveDependencies(ifname);
+    // Clear the bridge interface and the iface instance.
+    invalidateAndClearBridgedAp(ifname);
+    invalidateAndClear(ap_ifaces_, iface);
+    for (const auto& callback : event_cb_handler_.getCallbacks()) {
+        if (!callback->onIfaceRemoved(IfaceType::AP, ifname).isOk()) {
+            LOG(ERROR) << "Failed to invoke onIfaceRemoved callback";
+        }
+    }
+    setActiveWlanIfaceNameProperty(getFirstActiveWlanIfaceName());
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+WifiStatus WifiChip::removeIfaceInstanceFromBridgedApIfaceInternal(
+        const std::string& ifname, const std::string& ifInstanceName) {
+    const auto iface = findUsingName(ap_ifaces_, ifname);
+    if (!iface.get() || ifInstanceName.empty()) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    // Requires to remove one of the instance in bridge mode
+    for (auto const& it : br_ifaces_ap_instances_) {
+        if (it.first == ifname) {
+            std::vector<std::string> ap_instances = it.second;
+            for (auto const& iface : ap_instances) {
+                if (iface == ifInstanceName) {
+                    if (!iface_util_->removeIfaceFromBridge(it.first, iface)) {
+                        LOG(ERROR) << "Failed to remove interface: " << ifInstanceName << " from "
+                                   << ifname;
+                        return createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE);
+                    }
+                    legacy_hal::wifi_error legacy_status =
+                            legacy_hal_.lock()->deleteVirtualInterface(iface);
+                    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+                        LOG(ERROR) << "Failed to del interface: " << iface << " "
+                                   << legacyErrorToString(legacy_status);
+                        return createWifiStatusFromLegacyError(legacy_status);
+                    }
+                    ap_instances.erase(
+                            std::remove(ap_instances.begin(), ap_instances.end(), ifInstanceName),
+                            ap_instances.end());
+                    br_ifaces_ap_instances_[ifname] = ap_instances;
+                    break;
+                }
+            }
+            break;
+        }
+    }
+    iface->removeInstance(ifInstanceName);
+    setActiveWlanIfaceNameProperty(getFirstActiveWlanIfaceName());
+
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+std::pair<WifiStatus, sp<V1_4::IWifiNanIface>> WifiChip::createNanIfaceInternal() {
+    if (!canCurrentModeSupportIfaceOfTypeWithCurrentIfaces(IfaceType::NAN)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
+    }
+    bool is_dedicated_iface = true;
+    std::string ifname = getPredefinedNanIfaceName();
+    if (ifname.empty() || !iface_util_->ifNameToIndex(ifname)) {
+        // Use the first shared STA iface (wlan0) if a dedicated aware iface is
+        // not defined.
+        ifname = getFirstActiveWlanIfaceName();
+        is_dedicated_iface = false;
+    }
+    sp<WifiNanIface> iface = new WifiNanIface(ifname, is_dedicated_iface, legacy_hal_, iface_util_);
+    nan_ifaces_.push_back(iface);
+    for (const auto& callback : event_cb_handler_.getCallbacks()) {
+        if (!callback->onIfaceAdded(IfaceType::NAN, ifname).isOk()) {
+            LOG(ERROR) << "Failed to invoke onIfaceAdded callback";
+        }
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
+}
+
+std::pair<WifiStatus, std::vector<hidl_string>> WifiChip::getNanIfaceNamesInternal() {
+    if (nan_ifaces_.empty()) {
+        return {createWifiStatus(WifiStatusCode::SUCCESS), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), getNames(nan_ifaces_)};
+}
+
+std::pair<WifiStatus, sp<V1_4::IWifiNanIface>> WifiChip::getNanIfaceInternal(
+        const std::string& ifname) {
+    const auto iface = findUsingName(nan_ifaces_, ifname);
+    if (!iface.get()) {
+        return {createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS), nullptr};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
+}
+
+WifiStatus WifiChip::removeNanIfaceInternal(const std::string& ifname) {
+    const auto iface = findUsingName(nan_ifaces_, ifname);
+    if (!iface.get()) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    invalidateAndClear(nan_ifaces_, iface);
+    for (const auto& callback : event_cb_handler_.getCallbacks()) {
+        if (!callback->onIfaceRemoved(IfaceType::NAN, ifname).isOk()) {
+            LOG(ERROR) << "Failed to invoke onIfaceAdded callback";
+        }
+    }
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+std::pair<WifiStatus, sp<IWifiP2pIface>> WifiChip::createP2pIfaceInternal() {
+    if (!canCurrentModeSupportIfaceOfTypeWithCurrentIfaces(IfaceType::P2P)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
+    }
+    std::string ifname = getPredefinedP2pIfaceName();
+    sp<WifiP2pIface> iface = new WifiP2pIface(ifname, legacy_hal_);
+    p2p_ifaces_.push_back(iface);
+    for (const auto& callback : event_cb_handler_.getCallbacks()) {
+        if (!callback->onIfaceAdded(IfaceType::P2P, ifname).isOk()) {
+            LOG(ERROR) << "Failed to invoke onIfaceAdded callback";
+        }
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
+}
+
+std::pair<WifiStatus, std::vector<hidl_string>> WifiChip::getP2pIfaceNamesInternal() {
+    if (p2p_ifaces_.empty()) {
+        return {createWifiStatus(WifiStatusCode::SUCCESS), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), getNames(p2p_ifaces_)};
+}
+
+std::pair<WifiStatus, sp<IWifiP2pIface>> WifiChip::getP2pIfaceInternal(const std::string& ifname) {
+    const auto iface = findUsingName(p2p_ifaces_, ifname);
+    if (!iface.get()) {
+        return {createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS), nullptr};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
+}
+
+WifiStatus WifiChip::removeP2pIfaceInternal(const std::string& ifname) {
+    const auto iface = findUsingName(p2p_ifaces_, ifname);
+    if (!iface.get()) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    invalidateAndClear(p2p_ifaces_, iface);
+    for (const auto& callback : event_cb_handler_.getCallbacks()) {
+        if (!callback->onIfaceRemoved(IfaceType::P2P, ifname).isOk()) {
+            LOG(ERROR) << "Failed to invoke onIfaceRemoved callback";
+        }
+    }
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+std::pair<WifiStatus, sp<V1_5::IWifiStaIface>> WifiChip::createStaIfaceInternal() {
+    if (!canCurrentModeSupportIfaceOfTypeWithCurrentIfaces(IfaceType::STA)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
+    }
+    std::string ifname = allocateStaIfaceName();
+    legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->createVirtualInterface(
+            ifname, hidl_struct_util::convertHidlIfaceTypeToLegacy(IfaceType::STA));
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        LOG(ERROR) << "Failed to add interface: " << ifname << " "
+                   << legacyErrorToString(legacy_status);
+        return {createWifiStatusFromLegacyError(legacy_status), {}};
+    }
+    sp<WifiStaIface> iface = new WifiStaIface(ifname, legacy_hal_, iface_util_);
+    sta_ifaces_.push_back(iface);
+    for (const auto& callback : event_cb_handler_.getCallbacks()) {
+        if (!callback->onIfaceAdded(IfaceType::STA, ifname).isOk()) {
+            LOG(ERROR) << "Failed to invoke onIfaceAdded callback";
+        }
+    }
+    setActiveWlanIfaceNameProperty(getFirstActiveWlanIfaceName());
+    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
+}
+
+std::pair<WifiStatus, std::vector<hidl_string>> WifiChip::getStaIfaceNamesInternal() {
+    if (sta_ifaces_.empty()) {
+        return {createWifiStatus(WifiStatusCode::SUCCESS), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), getNames(sta_ifaces_)};
+}
+
+std::pair<WifiStatus, sp<V1_5::IWifiStaIface>> WifiChip::getStaIfaceInternal(
+        const std::string& ifname) {
+    const auto iface = findUsingName(sta_ifaces_, ifname);
+    if (!iface.get()) {
+        return {createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS), nullptr};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
+}
+
+WifiStatus WifiChip::removeStaIfaceInternal(const std::string& ifname) {
+    const auto iface = findUsingName(sta_ifaces_, ifname);
+    if (!iface.get()) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    // Invalidate & remove any dependent objects first.
+    invalidateAndRemoveDependencies(ifname);
+    legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->deleteVirtualInterface(ifname);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        LOG(ERROR) << "Failed to remove interface: " << ifname << " "
+                   << legacyErrorToString(legacy_status);
+    }
+    invalidateAndClear(sta_ifaces_, iface);
+    for (const auto& callback : event_cb_handler_.getCallbacks()) {
+        if (!callback->onIfaceRemoved(IfaceType::STA, ifname).isOk()) {
+            LOG(ERROR) << "Failed to invoke onIfaceRemoved callback";
+        }
+    }
+    setActiveWlanIfaceNameProperty(getFirstActiveWlanIfaceName());
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+std::pair<WifiStatus, sp<V1_0::IWifiRttController>> WifiChip::createRttControllerInternal(
+        const sp<IWifiIface>& /*bound_iface*/) {
+    LOG(ERROR) << "createRttController is not supported on this HAL";
+    return {createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED), {}};
+}
+
+std::pair<WifiStatus, std::vector<WifiDebugRingBufferStatus>>
+WifiChip::getDebugRingBuffersStatusInternal() {
+    legacy_hal::wifi_error legacy_status;
+    std::vector<legacy_hal::wifi_ring_buffer_status> legacy_ring_buffer_status_vec;
+    std::tie(legacy_status, legacy_ring_buffer_status_vec) =
+            legacy_hal_.lock()->getRingBuffersStatus(getFirstActiveWlanIfaceName());
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        return {createWifiStatusFromLegacyError(legacy_status), {}};
+    }
+    std::vector<WifiDebugRingBufferStatus> hidl_ring_buffer_status_vec;
+    if (!hidl_struct_util::convertLegacyVectorOfDebugRingBufferStatusToHidl(
+                legacy_ring_buffer_status_vec, &hidl_ring_buffer_status_vec)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_ring_buffer_status_vec};
+}
+
+WifiStatus WifiChip::startLoggingToDebugRingBufferInternal(
+        const hidl_string& ring_name, WifiDebugRingBufferVerboseLevel verbose_level,
+        uint32_t max_interval_in_sec, uint32_t min_data_size_in_bytes) {
+    WifiStatus status = registerDebugRingBufferCallback();
+    if (status.code != WifiStatusCode::SUCCESS) {
+        return status;
+    }
+    legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->startRingBufferLogging(
+            getFirstActiveWlanIfaceName(), ring_name,
+            static_cast<std::underlying_type<WifiDebugRingBufferVerboseLevel>::type>(verbose_level),
+            max_interval_in_sec, min_data_size_in_bytes);
+    ringbuffer_map_.insert(
+            std::pair<std::string, Ringbuffer>(ring_name, Ringbuffer(kMaxBufferSizeBytes)));
+    // if verbose logging enabled, turn up HAL daemon logging as well.
+    if (verbose_level < WifiDebugRingBufferVerboseLevel::VERBOSE) {
+        android::base::SetMinimumLogSeverity(android::base::DEBUG);
+    } else {
+        android::base::SetMinimumLogSeverity(android::base::VERBOSE);
+    }
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiChip::forceDumpToDebugRingBufferInternal(const hidl_string& ring_name) {
+    WifiStatus status = registerDebugRingBufferCallback();
+    if (status.code != WifiStatusCode::SUCCESS) {
+        return status;
+    }
+    legacy_hal::wifi_error legacy_status =
+            legacy_hal_.lock()->getRingBufferData(getFirstActiveWlanIfaceName(), ring_name);
+
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiChip::flushRingBufferToFileInternal() {
+    if (!writeRingbufferFilesInternal()) {
+        LOG(ERROR) << "Error writing files to flash";
+        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+    }
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+WifiStatus WifiChip::stopLoggingToDebugRingBufferInternal() {
+    legacy_hal::wifi_error legacy_status =
+            legacy_hal_.lock()->deregisterRingBufferCallbackHandler(getFirstActiveWlanIfaceName());
+    if (legacy_status == legacy_hal::WIFI_SUCCESS) {
+        debug_ring_buffer_cb_registered_ = false;
+    }
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+std::pair<WifiStatus, WifiDebugHostWakeReasonStats>
+WifiChip::getDebugHostWakeReasonStatsInternal() {
+    legacy_hal::wifi_error legacy_status;
+    legacy_hal::WakeReasonStats legacy_stats;
+    std::tie(legacy_status, legacy_stats) =
+            legacy_hal_.lock()->getWakeReasonStats(getFirstActiveWlanIfaceName());
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        return {createWifiStatusFromLegacyError(legacy_status), {}};
+    }
+    WifiDebugHostWakeReasonStats hidl_stats;
+    if (!hidl_struct_util::convertLegacyWakeReasonStatsToHidl(legacy_stats, &hidl_stats)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_stats};
+}
+
+WifiStatus WifiChip::enableDebugErrorAlertsInternal(bool enable) {
+    legacy_hal::wifi_error legacy_status;
+    if (enable) {
+        android::wp<WifiChip> weak_ptr_this(this);
+        const auto& on_alert_callback = [weak_ptr_this](int32_t error_code,
+                                                        std::vector<uint8_t> debug_data) {
+            const auto shared_ptr_this = weak_ptr_this.promote();
+            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                LOG(ERROR) << "Callback invoked on an invalid object";
+                return;
+            }
+            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                if (!callback->onDebugErrorAlert(error_code, debug_data).isOk()) {
+                    LOG(ERROR) << "Failed to invoke onDebugErrorAlert callback";
+                }
+            }
+        };
+        legacy_status = legacy_hal_.lock()->registerErrorAlertCallbackHandler(
+                getFirstActiveWlanIfaceName(), on_alert_callback);
+    } else {
+        legacy_status = legacy_hal_.lock()->deregisterErrorAlertCallbackHandler(
+                getFirstActiveWlanIfaceName());
+    }
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiChip::selectTxPowerScenarioInternal(V1_1::IWifiChip::TxPowerScenario scenario) {
+    auto legacy_status = legacy_hal_.lock()->selectTxPowerScenario(
+            getFirstActiveWlanIfaceName(),
+            hidl_struct_util::convertHidlTxPowerScenarioToLegacy(scenario));
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiChip::resetTxPowerScenarioInternal() {
+    auto legacy_status = legacy_hal_.lock()->resetTxPowerScenario(getFirstActiveWlanIfaceName());
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiChip::setLatencyModeInternal(LatencyMode mode) {
+    auto legacy_status = legacy_hal_.lock()->setLatencyMode(
+            getFirstActiveWlanIfaceName(), hidl_struct_util::convertHidlLatencyModeToLegacy(mode));
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiChip::registerEventCallbackInternal_1_2(
+        const sp<V1_2::IWifiChipEventCallback>& /* event_callback */) {
+    // Deprecated support for this callback.
+    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
+}
+
+WifiStatus WifiChip::selectTxPowerScenarioInternal_1_2(TxPowerScenario scenario) {
+    auto legacy_status = legacy_hal_.lock()->selectTxPowerScenario(
+            getFirstActiveWlanIfaceName(),
+            hidl_struct_util::convertHidlTxPowerScenarioToLegacy_1_2(scenario));
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+std::pair<WifiStatus, uint32_t> WifiChip::getCapabilitiesInternal_1_3() {
+    // Deprecated support for this callback.
+    return {createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED), 0};
+}
+
+std::pair<WifiStatus, uint32_t> WifiChip::getCapabilitiesInternal_1_5() {
+    legacy_hal::wifi_error legacy_status;
+    uint64_t legacy_feature_set;
+    uint32_t legacy_logger_feature_set;
+    const auto ifname = getFirstActiveWlanIfaceName();
+    std::tie(legacy_status, legacy_feature_set) =
+            legacy_hal_.lock()->getSupportedFeatureSet(ifname);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        return {createWifiStatusFromLegacyError(legacy_status), 0};
+    }
+    std::tie(legacy_status, legacy_logger_feature_set) =
+            legacy_hal_.lock()->getLoggerSupportedFeatureSet(ifname);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        // some devices don't support querying logger feature set
+        legacy_logger_feature_set = 0;
+    }
+    uint32_t hidl_caps;
+    if (!hidl_struct_util::convertLegacyFeaturesToHidlChipCapabilities(
+                legacy_feature_set, legacy_logger_feature_set, &hidl_caps)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), 0};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
+}
+
+std::pair<WifiStatus, sp<V1_4::IWifiRttController>> WifiChip::createRttControllerInternal_1_4(
+        const sp<IWifiIface>& bound_iface) {
+    if (sta_ifaces_.size() == 0 && !canCurrentModeSupportIfaceOfType(IfaceType::STA)) {
+        LOG(ERROR) << "createRttControllerInternal_1_4: Chip cannot support STAs "
+                      "(and RTT by extension)";
+        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
+    }
+    sp<WifiRttController> rtt =
+            new WifiRttController(getFirstActiveWlanIfaceName(), bound_iface, legacy_hal_);
+    rtt_controllers_.emplace_back(rtt);
+    return {createWifiStatus(WifiStatusCode::SUCCESS), rtt};
+}
+
+WifiStatus WifiChip::registerEventCallbackInternal_1_4(
+        const sp<V1_4::IWifiChipEventCallback>& event_callback) {
+    if (!event_cb_handler_.addCallback(event_callback)) {
+        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+    }
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+WifiStatus WifiChip::setMultiStaPrimaryConnectionInternal(const std::string& ifname) {
+    auto legacy_status = legacy_hal_.lock()->multiStaSetPrimaryConnection(ifname);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiChip::setMultiStaUseCaseInternal(MultiStaUseCase use_case) {
+    auto legacy_status = legacy_hal_.lock()->multiStaSetUseCase(
+            hidl_struct_util::convertHidlMultiStaUseCaseToLegacy(use_case));
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiChip::setCoexUnsafeChannelsInternal(std::vector<CoexUnsafeChannel> unsafe_channels,
+                                                   uint32_t restrictions) {
+    std::vector<legacy_hal::wifi_coex_unsafe_channel> legacy_unsafe_channels;
+    if (!hidl_struct_util::convertHidlVectorOfCoexUnsafeChannelToLegacy(unsafe_channels,
+                                                                        &legacy_unsafe_channels)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    uint32_t legacy_restrictions = 0;
+    if (restrictions & CoexRestriction::WIFI_DIRECT) {
+        legacy_restrictions |= legacy_hal::wifi_coex_restriction::WIFI_DIRECT;
+    }
+    if (restrictions & CoexRestriction::SOFTAP) {
+        legacy_restrictions |= legacy_hal::wifi_coex_restriction::SOFTAP;
+    }
+    if (restrictions & CoexRestriction::WIFI_AWARE) {
+        legacy_restrictions |= legacy_hal::wifi_coex_restriction::WIFI_AWARE;
+    }
+    auto legacy_status =
+            legacy_hal_.lock()->setCoexUnsafeChannels(legacy_unsafe_channels, legacy_restrictions);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiChip::setCountryCodeInternal(const std::array<int8_t, 2>& code) {
+    auto legacy_status = legacy_hal_.lock()->setCountryCode(getFirstActiveWlanIfaceName(), code);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+std::pair<WifiStatus, std::vector<WifiUsableChannel>> WifiChip::getUsableChannelsInternal(
+        WifiBand band, uint32_t ifaceModeMask, uint32_t filterMask) {
+    legacy_hal::wifi_error legacy_status;
+    std::vector<legacy_hal::wifi_usable_channel> legacy_usable_channels;
+    std::tie(legacy_status, legacy_usable_channels) = legacy_hal_.lock()->getUsableChannels(
+            hidl_struct_util::convertHidlWifiBandToLegacyMacBand(band),
+            hidl_struct_util::convertHidlWifiIfaceModeToLegacy(ifaceModeMask),
+            hidl_struct_util::convertHidlUsableChannelFilterToLegacy(filterMask));
+
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        return {createWifiStatusFromLegacyError(legacy_status), {}};
+    }
+    std::vector<WifiUsableChannel> hidl_usable_channels;
+    if (!hidl_struct_util::convertLegacyWifiUsableChannelsToHidl(legacy_usable_channels,
+                                                                 &hidl_usable_channels)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_usable_channels};
+}
+
+WifiStatus WifiChip::triggerSubsystemRestartInternal() {
+    auto legacy_status = legacy_hal_.lock()->triggerSubsystemRestart();
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiChip::handleChipConfiguration(
+        /* NONNULL */ std::unique_lock<std::recursive_mutex>* lock, ChipModeId mode_id) {
+    // If the chip is already configured in a different mode, stop
+    // the legacy HAL and then start it after firmware mode change.
+    if (isValidModeId(current_mode_id_)) {
+        LOG(INFO) << "Reconfiguring chip from mode " << current_mode_id_ << " to mode " << mode_id;
+        invalidateAndRemoveAllIfaces();
+        legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->stop(lock, []() {});
+        if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+            LOG(ERROR) << "Failed to stop legacy HAL: " << legacyErrorToString(legacy_status);
+            return createWifiStatusFromLegacyError(legacy_status);
+        }
+    }
+    // Firmware mode change not needed for V2 devices.
+    bool success = true;
+    if (mode_id == feature_flags::chip_mode_ids::kV1Sta) {
+        success = mode_controller_.lock()->changeFirmwareMode(IfaceType::STA);
+    } else if (mode_id == feature_flags::chip_mode_ids::kV1Ap) {
+        success = mode_controller_.lock()->changeFirmwareMode(IfaceType::AP);
+    }
+    if (!success) {
+        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+    }
+    legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->start();
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        LOG(ERROR) << "Failed to start legacy HAL: " << legacyErrorToString(legacy_status);
+        return createWifiStatusFromLegacyError(legacy_status);
+    }
+    // Every time the HAL is restarted, we need to register the
+    // radio mode change callback.
+    WifiStatus status = registerRadioModeChangeCallback();
+    if (status.code != WifiStatusCode::SUCCESS) {
+        // This probably is not a critical failure?
+        LOG(ERROR) << "Failed to register radio mode change callback";
+    }
+    // Extract and save the version information into property.
+    std::pair<WifiStatus, V1_4::IWifiChip::ChipDebugInfo> version_info;
+    version_info = WifiChip::requestChipDebugInfoInternal();
+    if (WifiStatusCode::SUCCESS == version_info.first.code) {
+        property_set("vendor.wlan.firmware.version",
+                     version_info.second.firmwareDescription.c_str());
+        property_set("vendor.wlan.driver.version", version_info.second.driverDescription.c_str());
+    }
+
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+WifiStatus WifiChip::registerDebugRingBufferCallback() {
+    if (debug_ring_buffer_cb_registered_) {
+        return createWifiStatus(WifiStatusCode::SUCCESS);
+    }
+
+    android::wp<WifiChip> weak_ptr_this(this);
+    const auto& on_ring_buffer_data_callback =
+            [weak_ptr_this](const std::string& name, const std::vector<uint8_t>& data,
+                            const legacy_hal::wifi_ring_buffer_status& status) {
+                const auto shared_ptr_this = weak_ptr_this.promote();
+                if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                    LOG(ERROR) << "Callback invoked on an invalid object";
+                    return;
+                }
+                WifiDebugRingBufferStatus hidl_status;
+                if (!hidl_struct_util::convertLegacyDebugRingBufferStatusToHidl(status,
+                                                                                &hidl_status)) {
+                    LOG(ERROR) << "Error converting ring buffer status";
+                    return;
+                }
+                {
+                    std::unique_lock<std::mutex> lk(shared_ptr_this->lock_t);
+                    const auto& target = shared_ptr_this->ringbuffer_map_.find(name);
+                    if (target != shared_ptr_this->ringbuffer_map_.end()) {
+                        Ringbuffer& cur_buffer = target->second;
+                        cur_buffer.append(data);
+                    } else {
+                        LOG(ERROR) << "Ringname " << name << " not found";
+                        return;
+                    }
+                    // unique_lock unlocked here
+                }
+            };
+    legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->registerRingBufferCallbackHandler(
+            getFirstActiveWlanIfaceName(), on_ring_buffer_data_callback);
+
+    if (legacy_status == legacy_hal::WIFI_SUCCESS) {
+        debug_ring_buffer_cb_registered_ = true;
+    }
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiChip::registerRadioModeChangeCallback() {
+    android::wp<WifiChip> weak_ptr_this(this);
+    const auto& on_radio_mode_change_callback =
+            [weak_ptr_this](const std::vector<legacy_hal::WifiMacInfo>& mac_infos) {
+                const auto shared_ptr_this = weak_ptr_this.promote();
+                if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                    LOG(ERROR) << "Callback invoked on an invalid object";
+                    return;
+                }
+                std::vector<V1_4::IWifiChipEventCallback::RadioModeInfo> hidl_radio_mode_infos;
+                if (!hidl_struct_util::convertLegacyWifiMacInfosToHidl(mac_infos,
+                                                                       &hidl_radio_mode_infos)) {
+                    LOG(ERROR) << "Error converting wifi mac info";
+                    return;
+                }
+                for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                    if (!callback->onRadioModeChange_1_4(hidl_radio_mode_infos).isOk()) {
+                        LOG(ERROR) << "Failed to invoke onRadioModeChange_1_4"
+                                   << " callback on: " << toString(callback);
+                    }
+                }
+            };
+    legacy_hal::wifi_error legacy_status =
+            legacy_hal_.lock()->registerRadioModeChangeCallbackHandler(
+                    getFirstActiveWlanIfaceName(), on_radio_mode_change_callback);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+std::vector<V1_4::IWifiChip::ChipIfaceCombination> WifiChip::getCurrentModeIfaceCombinations() {
+    if (!isValidModeId(current_mode_id_)) {
+        LOG(ERROR) << "Chip not configured in a mode yet";
+        return {};
+    }
+    for (const auto& mode : modes_) {
+        if (mode.id == current_mode_id_) {
+            return mode.availableCombinations;
+        }
+    }
+    CHECK(0) << "Expected to find iface combinations for current mode!";
+    return {};
+}
+
+// Returns a map indexed by IfaceType with the number of ifaces currently
+// created of the corresponding type.
+std::map<IfaceType, size_t> WifiChip::getCurrentIfaceCombination() {
+    std::map<IfaceType, size_t> iface_counts;
+    iface_counts[IfaceType::AP] = ap_ifaces_.size();
+    iface_counts[IfaceType::NAN] = nan_ifaces_.size();
+    iface_counts[IfaceType::P2P] = p2p_ifaces_.size();
+    iface_counts[IfaceType::STA] = sta_ifaces_.size();
+    return iface_counts;
+}
+
+// This expands the provided iface combinations to a more parseable
+// form. Returns a vector of available combinations possible with the number
+// of ifaces of each type in the combination.
+// This method is a port of HalDeviceManager.expandIfaceCombos() from framework.
+std::vector<std::map<IfaceType, size_t>> WifiChip::expandIfaceCombinations(
+        const V1_4::IWifiChip::ChipIfaceCombination& combination) {
+    uint32_t num_expanded_combos = 1;
+    for (const auto& limit : combination.limits) {
+        for (uint32_t i = 0; i < limit.maxIfaces; i++) {
+            num_expanded_combos *= limit.types.size();
+        }
+    }
+
+    // Allocate the vector of expanded combos and reset all iface counts to 0
+    // in each combo.
+    std::vector<std::map<IfaceType, size_t>> expanded_combos;
+    expanded_combos.resize(num_expanded_combos);
+    for (auto& expanded_combo : expanded_combos) {
+        for (const auto type : {IfaceType::AP, IfaceType::NAN, IfaceType::P2P, IfaceType::STA}) {
+            expanded_combo[type] = 0;
+        }
+    }
+    uint32_t span = num_expanded_combos;
+    for (const auto& limit : combination.limits) {
+        for (uint32_t i = 0; i < limit.maxIfaces; i++) {
+            span /= limit.types.size();
+            for (uint32_t k = 0; k < num_expanded_combos; ++k) {
+                const auto iface_type = limit.types[(k / span) % limit.types.size()];
+                expanded_combos[k][iface_type]++;
+            }
+        }
+    }
+    return expanded_combos;
+}
+
+bool WifiChip::canExpandedIfaceComboSupportIfaceOfTypeWithCurrentIfaces(
+        const std::map<IfaceType, size_t>& expanded_combo, IfaceType requested_type) {
+    const auto current_combo = getCurrentIfaceCombination();
+
+    // Check if we have space for 1 more iface of |type| in this combo
+    for (const auto type : {IfaceType::AP, IfaceType::NAN, IfaceType::P2P, IfaceType::STA}) {
+        size_t num_ifaces_needed = current_combo.at(type);
+        if (type == requested_type) {
+            num_ifaces_needed++;
+        }
+        size_t num_ifaces_allowed = expanded_combo.at(type);
+        if (num_ifaces_needed > num_ifaces_allowed) {
+            return false;
+        }
+    }
+    return true;
+}
+
+// This method does the following:
+// a) Enumerate all possible iface combos by expanding the current
+//    ChipIfaceCombination.
+// b) Check if the requested iface type can be added to the current mode
+//    with the iface combination that is already active.
+bool WifiChip::canCurrentModeSupportIfaceOfTypeWithCurrentIfaces(IfaceType requested_type) {
+    if (!isValidModeId(current_mode_id_)) {
+        LOG(ERROR) << "Chip not configured in a mode yet";
+        return false;
+    }
+    const auto combinations = getCurrentModeIfaceCombinations();
+    for (const auto& combination : combinations) {
+        const auto expanded_combos = expandIfaceCombinations(combination);
+        for (const auto& expanded_combo : expanded_combos) {
+            if (canExpandedIfaceComboSupportIfaceOfTypeWithCurrentIfaces(expanded_combo,
+                                                                         requested_type)) {
+                return true;
+            }
+        }
+    }
+    return false;
+}
+
+// Note: This does not consider ifaces already active. It only checks if the
+// provided expanded iface combination can support the requested combo.
+bool WifiChip::canExpandedIfaceComboSupportIfaceCombo(
+        const std::map<IfaceType, size_t>& expanded_combo,
+        const std::map<IfaceType, size_t>& req_combo) {
+    // Check if we have space for 1 more iface of |type| in this combo
+    for (const auto type : {IfaceType::AP, IfaceType::NAN, IfaceType::P2P, IfaceType::STA}) {
+        if (req_combo.count(type) == 0) {
+            // Iface of "type" not in the req_combo.
+            continue;
+        }
+        size_t num_ifaces_needed = req_combo.at(type);
+        size_t num_ifaces_allowed = expanded_combo.at(type);
+        if (num_ifaces_needed > num_ifaces_allowed) {
+            return false;
+        }
+    }
+    return true;
+}
+// This method does the following:
+// a) Enumerate all possible iface combos by expanding the current
+//    ChipIfaceCombination.
+// b) Check if the requested iface combo can be added to the current mode.
+// Note: This does not consider ifaces already active. It only checks if the
+// current mode can support the requested combo.
+bool WifiChip::canCurrentModeSupportIfaceCombo(const std::map<IfaceType, size_t>& req_combo) {
+    if (!isValidModeId(current_mode_id_)) {
+        LOG(ERROR) << "Chip not configured in a mode yet";
+        return false;
+    }
+    const auto combinations = getCurrentModeIfaceCombinations();
+    for (const auto& combination : combinations) {
+        const auto expanded_combos = expandIfaceCombinations(combination);
+        for (const auto& expanded_combo : expanded_combos) {
+            if (canExpandedIfaceComboSupportIfaceCombo(expanded_combo, req_combo)) {
+                return true;
+            }
+        }
+    }
+    return false;
+}
+
+// This method does the following:
+// a) Enumerate all possible iface combos by expanding the current
+//    ChipIfaceCombination.
+// b) Check if the requested iface type can be added to the current mode.
+bool WifiChip::canCurrentModeSupportIfaceOfType(IfaceType requested_type) {
+    // Check if we can support at least 1 iface of type.
+    std::map<IfaceType, size_t> req_iface_combo;
+    req_iface_combo[requested_type] = 1;
+    return canCurrentModeSupportIfaceCombo(req_iface_combo);
+}
+
+bool WifiChip::isValidModeId(ChipModeId mode_id) {
+    for (const auto& mode : modes_) {
+        if (mode.id == mode_id) {
+            return true;
+        }
+    }
+    return false;
+}
+
+bool WifiChip::isStaApConcurrencyAllowedInCurrentMode() {
+    // Check if we can support at least 1 STA & 1 AP concurrently.
+    std::map<IfaceType, size_t> req_iface_combo;
+    req_iface_combo[IfaceType::AP] = 1;
+    req_iface_combo[IfaceType::STA] = 1;
+    return canCurrentModeSupportIfaceCombo(req_iface_combo);
+}
+
+bool WifiChip::isDualStaConcurrencyAllowedInCurrentMode() {
+    // Check if we can support at least 2 STA concurrently.
+    std::map<IfaceType, size_t> req_iface_combo;
+    req_iface_combo[IfaceType::STA] = 2;
+    return canCurrentModeSupportIfaceCombo(req_iface_combo);
+}
+
+std::string WifiChip::getFirstActiveWlanIfaceName() {
+    if (sta_ifaces_.size() > 0) return sta_ifaces_[0]->getName();
+    if (ap_ifaces_.size() > 0) {
+        // If the first active wlan iface is bridged iface.
+        // Return first instance name.
+        for (auto const& it : br_ifaces_ap_instances_) {
+            if (it.first == ap_ifaces_[0]->getName()) {
+                return it.second[0];
+            }
+        }
+        return ap_ifaces_[0]->getName();
+    }
+    // This could happen if the chip call is made before any STA/AP
+    // iface is created. Default to wlan0 for such cases.
+    LOG(WARNING) << "No active wlan interfaces in use! Using default";
+    return getWlanIfaceNameWithType(IfaceType::STA, 0);
+}
+
+// Return the first wlan (wlan0, wlan1 etc.) starting from |start_idx|
+// not already in use.
+// Note: This doesn't check the actual presence of these interfaces.
+std::string WifiChip::allocateApOrStaIfaceName(IfaceType type, uint32_t start_idx) {
+    for (unsigned idx = start_idx; idx < kMaxWlanIfaces; idx++) {
+        const auto ifname = getWlanIfaceNameWithType(type, idx);
+        if (findUsingNameFromBridgedApInstances(ifname)) continue;
+        if (findUsingName(ap_ifaces_, ifname)) continue;
+        if (findUsingName(sta_ifaces_, ifname)) continue;
+        return ifname;
+    }
+    // This should never happen. We screwed up somewhere if it did.
+    CHECK(false) << "All wlan interfaces in use already!";
+    return {};
+}
+
+uint32_t WifiChip::startIdxOfApIface() {
+    if (isDualStaConcurrencyAllowedInCurrentMode()) {
+        // When the HAL support dual STAs, AP should start with idx 2.
+        return 2;
+    } else if (isStaApConcurrencyAllowedInCurrentMode()) {
+        //  When the HAL support STA + AP but it doesn't support dual STAs.
+        //  AP should start with idx 1.
+        return 1;
+    }
+    // No concurrency support.
+    return 0;
+}
+
+// AP iface names start with idx 1 for modes supporting
+// concurrent STA and not dual AP, else start with idx 0.
+std::string WifiChip::allocateApIfaceName() {
+    // Check if we have a dedicated iface for AP.
+    std::vector<std::string> ifnames = getPredefinedApIfaceNames(false);
+    if (!ifnames.empty()) {
+        return ifnames[0];
+    }
+    return allocateApOrStaIfaceName(IfaceType::AP, startIdxOfApIface());
+}
+
+std::vector<std::string> WifiChip::allocateBridgedApInstanceNames() {
+    // Check if we have a dedicated iface for AP.
+    std::vector<std::string> instances = getPredefinedApIfaceNames(true);
+    if (instances.size() == 2) {
+        return instances;
+    } else {
+        int num_ifaces_need_to_allocate = 2 - instances.size();
+        for (int i = 0; i < num_ifaces_need_to_allocate; i++) {
+            std::string instance_name =
+                    allocateApOrStaIfaceName(IfaceType::AP, startIdxOfApIface() + i);
+            if (!instance_name.empty()) {
+                instances.push_back(instance_name);
+            }
+        }
+    }
+    return instances;
+}
+
+// STA iface names start with idx 0.
+// Primary STA iface will always be 0.
+std::string WifiChip::allocateStaIfaceName() {
+    return allocateApOrStaIfaceName(IfaceType::STA, 0);
+}
+
+bool WifiChip::writeRingbufferFilesInternal() {
+    if (!removeOldFilesInternal()) {
+        LOG(ERROR) << "Error occurred while deleting old tombstone files";
+        return false;
+    }
+    // write ringbuffers to file
+    {
+        std::unique_lock<std::mutex> lk(lock_t);
+        for (auto& item : ringbuffer_map_) {
+            Ringbuffer& cur_buffer = item.second;
+            if (cur_buffer.getData().empty()) {
+                continue;
+            }
+            const std::string file_path_raw = kTombstoneFolderPath + item.first + "XXXXXXXXXX";
+            const int dump_fd = mkstemp(makeCharVec(file_path_raw).data());
+            if (dump_fd == -1) {
+                PLOG(ERROR) << "create file failed";
+                return false;
+            }
+            unique_fd file_auto_closer(dump_fd);
+            for (const auto& cur_block : cur_buffer.getData()) {
+                if (write(dump_fd, cur_block.data(), sizeof(cur_block[0]) * cur_block.size()) ==
+                    -1) {
+                    PLOG(ERROR) << "Error writing to file";
+                }
+            }
+            cur_buffer.clear();
+        }
+        // unique_lock unlocked here
+    }
+    return true;
+}
+
+std::string WifiChip::getWlanIfaceNameWithType(IfaceType type, unsigned idx) {
+    std::string ifname;
+
+    // let the legacy hal override the interface name
+    legacy_hal::wifi_error err = legacy_hal_.lock()->getSupportedIfaceName((uint32_t)type, ifname);
+    if (err == legacy_hal::WIFI_SUCCESS) return ifname;
+
+    return getWlanIfaceName(idx);
+}
+
+void WifiChip::invalidateAndClearBridgedApAll() {
+    for (auto const& it : br_ifaces_ap_instances_) {
+        for (auto const& iface : it.second) {
+            iface_util_->removeIfaceFromBridge(it.first, iface);
+            legacy_hal_.lock()->deleteVirtualInterface(iface);
+        }
+        iface_util_->deleteBridge(it.first);
+    }
+    br_ifaces_ap_instances_.clear();
+}
+
+void WifiChip::invalidateAndClearBridgedAp(const std::string& br_name) {
+    if (br_name.empty()) return;
+    // delete managed interfaces
+    for (auto const& it : br_ifaces_ap_instances_) {
+        if (it.first == br_name) {
+            for (auto const& iface : it.second) {
+                iface_util_->removeIfaceFromBridge(br_name, iface);
+                legacy_hal_.lock()->deleteVirtualInterface(iface);
+            }
+            iface_util_->deleteBridge(br_name);
+            br_ifaces_ap_instances_.erase(br_name);
+            break;
+        }
+    }
+    return;
+}
+
+bool WifiChip::findUsingNameFromBridgedApInstances(const std::string& name) {
+    for (auto const& it : br_ifaces_ap_instances_) {
+        if (it.first == name) {
+            return true;
+        }
+        for (auto const& iface : it.second) {
+            if (iface == name) {
+                return true;
+            }
+        }
+    }
+    return false;
+}
+
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.6/default/wifi_chip.h b/wifi/1.6/default/wifi_chip.h
new file mode 100644
index 0000000..8a06898
--- /dev/null
+++ b/wifi/1.6/default/wifi_chip.h
@@ -0,0 +1,294 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef WIFI_CHIP_H_
+#define WIFI_CHIP_H_
+
+#include <list>
+#include <map>
+#include <mutex>
+
+#include <android-base/macros.h>
+#include <android/hardware/wifi/1.4/IWifiRttController.h>
+#include <android/hardware/wifi/1.5/IWifiChip.h>
+
+#include "hidl_callback_util.h"
+#include "ringbuffer.h"
+#include "wifi_ap_iface.h"
+#include "wifi_feature_flags.h"
+#include "wifi_legacy_hal.h"
+#include "wifi_mode_controller.h"
+#include "wifi_nan_iface.h"
+#include "wifi_p2p_iface.h"
+#include "wifi_rtt_controller.h"
+#include "wifi_sta_iface.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+using namespace android::hardware::wifi::V1_0;
+using V1_5::WifiBand;
+using V1_5::WifiUsableChannel;
+
+/**
+ * HIDL interface object used to control a Wifi HAL chip instance.
+ * Since there is only a single chip instance used today, there is no
+ * identifying handle information stored here.
+ */
+class WifiChip : public V1_5::IWifiChip {
+  public:
+    WifiChip(ChipId chip_id, bool is_primary,
+             const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
+             const std::weak_ptr<mode_controller::WifiModeController> mode_controller,
+             const std::shared_ptr<iface_util::WifiIfaceUtil> iface_util,
+             const std::weak_ptr<feature_flags::WifiFeatureFlags> feature_flags,
+             const std::function<void(const std::string&)>& subsystemCallbackHandler);
+    // HIDL does not provide a built-in mechanism to let the server invalidate
+    // a HIDL interface object after creation. If any client process holds onto
+    // a reference to the object in their context, any method calls on that
+    // reference will continue to be directed to the server.
+    //
+    // However Wifi HAL needs to control the lifetime of these objects. So, add
+    // a public |invalidate| method to |WifiChip| and it's child objects. This
+    // will be used to mark an object invalid when either:
+    // a) Wifi HAL is stopped, or
+    // b) Wifi Chip is reconfigured.
+    //
+    // All HIDL method implementations should check if the object is still
+    // marked valid before processing them.
+    void invalidate();
+    bool isValid();
+    std::set<sp<V1_4::IWifiChipEventCallback>> getEventCallbacks();
+
+    // HIDL methods exposed.
+    Return<void> getId(getId_cb hidl_status_cb) override;
+    // Deprecated support for this callback
+    Return<void> registerEventCallback(const sp<V1_0::IWifiChipEventCallback>& event_callback,
+                                       registerEventCallback_cb hidl_status_cb) override;
+    Return<void> getCapabilities(getCapabilities_cb hidl_status_cb) override;
+    Return<void> getAvailableModes(getAvailableModes_cb hidl_status_cb) override;
+    Return<void> configureChip(ChipModeId mode_id, configureChip_cb hidl_status_cb) override;
+    Return<void> getMode(getMode_cb hidl_status_cb) override;
+    Return<void> requestChipDebugInfo(requestChipDebugInfo_cb hidl_status_cb) override;
+    Return<void> requestDriverDebugDump(requestDriverDebugDump_cb hidl_status_cb) override;
+    Return<void> requestFirmwareDebugDump(requestFirmwareDebugDump_cb hidl_status_cb) override;
+    Return<void> createApIface(createApIface_cb hidl_status_cb) override;
+    Return<void> createBridgedApIface(createBridgedApIface_cb hidl_status_cb) override;
+    Return<void> getApIfaceNames(getApIfaceNames_cb hidl_status_cb) override;
+    Return<void> getApIface(const hidl_string& ifname, getApIface_cb hidl_status_cb) override;
+    Return<void> removeApIface(const hidl_string& ifname, removeApIface_cb hidl_status_cb) override;
+    Return<void> removeIfaceInstanceFromBridgedApIface(
+            const hidl_string& brIfaceName, const hidl_string& ifaceInstanceName,
+            removeIfaceInstanceFromBridgedApIface_cb hidl_status_cb) override;
+    Return<void> createNanIface(createNanIface_cb hidl_status_cb) override;
+    Return<void> getNanIfaceNames(getNanIfaceNames_cb hidl_status_cb) override;
+    Return<void> getNanIface(const hidl_string& ifname, getNanIface_cb hidl_status_cb) override;
+    Return<void> removeNanIface(const hidl_string& ifname,
+                                removeNanIface_cb hidl_status_cb) override;
+    Return<void> createP2pIface(createP2pIface_cb hidl_status_cb) override;
+    Return<void> getP2pIfaceNames(getP2pIfaceNames_cb hidl_status_cb) override;
+    Return<void> getP2pIface(const hidl_string& ifname, getP2pIface_cb hidl_status_cb) override;
+    Return<void> removeP2pIface(const hidl_string& ifname,
+                                removeP2pIface_cb hidl_status_cb) override;
+    Return<void> createStaIface(createStaIface_cb hidl_status_cb) override;
+    Return<void> getStaIfaceNames(getStaIfaceNames_cb hidl_status_cb) override;
+    Return<void> getStaIface(const hidl_string& ifname, getStaIface_cb hidl_status_cb) override;
+    Return<void> removeStaIface(const hidl_string& ifname,
+                                removeStaIface_cb hidl_status_cb) override;
+    Return<void> createRttController(const sp<IWifiIface>& bound_iface,
+                                     createRttController_cb hidl_status_cb) override;
+    Return<void> getDebugRingBuffersStatus(getDebugRingBuffersStatus_cb hidl_status_cb) override;
+    Return<void> startLoggingToDebugRingBuffer(
+            const hidl_string& ring_name, WifiDebugRingBufferVerboseLevel verbose_level,
+            uint32_t max_interval_in_sec, uint32_t min_data_size_in_bytes,
+            startLoggingToDebugRingBuffer_cb hidl_status_cb) override;
+    Return<void> forceDumpToDebugRingBuffer(const hidl_string& ring_name,
+                                            forceDumpToDebugRingBuffer_cb hidl_status_cb) override;
+    Return<void> flushRingBufferToFile(flushRingBufferToFile_cb hidl_status_cb) override;
+    Return<void> stopLoggingToDebugRingBuffer(
+            stopLoggingToDebugRingBuffer_cb hidl_status_cb) override;
+    Return<void> getDebugHostWakeReasonStats(
+            getDebugHostWakeReasonStats_cb hidl_status_cb) override;
+    Return<void> enableDebugErrorAlerts(bool enable,
+                                        enableDebugErrorAlerts_cb hidl_status_cb) override;
+    Return<void> selectTxPowerScenario(V1_1::IWifiChip::TxPowerScenario scenario,
+                                       selectTxPowerScenario_cb hidl_status_cb) override;
+    Return<void> resetTxPowerScenario(resetTxPowerScenario_cb hidl_status_cb) override;
+    Return<void> setLatencyMode(LatencyMode mode, setLatencyMode_cb hidl_status_cb) override;
+    Return<void> registerEventCallback_1_2(const sp<V1_2::IWifiChipEventCallback>& event_callback,
+                                           registerEventCallback_1_2_cb hidl_status_cb) override;
+    Return<void> selectTxPowerScenario_1_2(TxPowerScenario scenario,
+                                           selectTxPowerScenario_cb hidl_status_cb) override;
+    Return<void> getCapabilities_1_3(getCapabilities_cb hidl_status_cb) override;
+    Return<void> getCapabilities_1_5(getCapabilities_1_5_cb hidl_status_cb) override;
+    Return<void> debug(const hidl_handle& handle, const hidl_vec<hidl_string>& options) override;
+    Return<void> createRttController_1_4(const sp<IWifiIface>& bound_iface,
+                                         createRttController_1_4_cb hidl_status_cb) override;
+    Return<void> registerEventCallback_1_4(const sp<V1_4::IWifiChipEventCallback>& event_callback,
+                                           registerEventCallback_1_4_cb hidl_status_cb) override;
+    Return<void> setMultiStaPrimaryConnection(
+            const hidl_string& ifname, setMultiStaPrimaryConnection_cb hidl_status_cb) override;
+    Return<void> setMultiStaUseCase(MultiStaUseCase use_case,
+                                    setMultiStaUseCase_cb hidl_status_cb) override;
+    Return<void> setCoexUnsafeChannels(const hidl_vec<CoexUnsafeChannel>& unsafe_channels,
+                                       hidl_bitfield<IfaceType> restrictions,
+                                       setCoexUnsafeChannels_cb hidl_status_cb) override;
+    Return<void> setCountryCode(const hidl_array<int8_t, 2>& code,
+                                setCountryCode_cb _hidl_cb) override;
+    Return<void> getUsableChannels(WifiBand band, hidl_bitfield<V1_5::WifiIfaceMode> ifaceModeMask,
+                                   hidl_bitfield<UsableChannelFilter> filterMask,
+                                   getUsableChannels_cb _hidl_cb) override;
+    Return<void> triggerSubsystemRestart(triggerSubsystemRestart_cb hidl_status_cb) override;
+
+  private:
+    void invalidateAndRemoveAllIfaces();
+    // When a STA iface is removed any dependent NAN-ifaces/RTT-controllers are
+    // invalidated & removed.
+    void invalidateAndRemoveDependencies(const std::string& removed_iface_name);
+
+    // Corresponding worker functions for the HIDL methods.
+    std::pair<WifiStatus, ChipId> getIdInternal();
+    // Deprecated support for this callback
+    WifiStatus registerEventCallbackInternal(
+            const sp<V1_0::IWifiChipEventCallback>& event_callback);
+    std::pair<WifiStatus, uint32_t> getCapabilitiesInternal();
+    std::pair<WifiStatus, std::vector<ChipMode>> getAvailableModesInternal();
+    WifiStatus configureChipInternal(std::unique_lock<std::recursive_mutex>* lock,
+                                     ChipModeId mode_id);
+    std::pair<WifiStatus, uint32_t> getModeInternal();
+    std::pair<WifiStatus, IWifiChip::ChipDebugInfo> requestChipDebugInfoInternal();
+    std::pair<WifiStatus, std::vector<uint8_t>> requestDriverDebugDumpInternal();
+    std::pair<WifiStatus, std::vector<uint8_t>> requestFirmwareDebugDumpInternal();
+    sp<WifiApIface> newWifiApIface(std::string& ifname);
+    WifiStatus createVirtualApInterface(const std::string& apVirtIf);
+    std::pair<WifiStatus, sp<V1_5::IWifiApIface>> createApIfaceInternal();
+    std::pair<WifiStatus, sp<V1_5::IWifiApIface>> createBridgedApIfaceInternal();
+    std::pair<WifiStatus, std::vector<hidl_string>> getApIfaceNamesInternal();
+    std::pair<WifiStatus, sp<V1_5::IWifiApIface>> getApIfaceInternal(const std::string& ifname);
+    WifiStatus removeApIfaceInternal(const std::string& ifname);
+    WifiStatus removeIfaceInstanceFromBridgedApIfaceInternal(const std::string& brIfaceName,
+                                                             const std::string& ifInstanceName);
+    std::pair<WifiStatus, sp<V1_4::IWifiNanIface>> createNanIfaceInternal();
+    std::pair<WifiStatus, std::vector<hidl_string>> getNanIfaceNamesInternal();
+    std::pair<WifiStatus, sp<V1_4::IWifiNanIface>> getNanIfaceInternal(const std::string& ifname);
+    WifiStatus removeNanIfaceInternal(const std::string& ifname);
+    std::pair<WifiStatus, sp<IWifiP2pIface>> createP2pIfaceInternal();
+    std::pair<WifiStatus, std::vector<hidl_string>> getP2pIfaceNamesInternal();
+    std::pair<WifiStatus, sp<IWifiP2pIface>> getP2pIfaceInternal(const std::string& ifname);
+    WifiStatus removeP2pIfaceInternal(const std::string& ifname);
+    std::pair<WifiStatus, sp<V1_5::IWifiStaIface>> createStaIfaceInternal();
+    std::pair<WifiStatus, std::vector<hidl_string>> getStaIfaceNamesInternal();
+    std::pair<WifiStatus, sp<V1_5::IWifiStaIface>> getStaIfaceInternal(const std::string& ifname);
+    WifiStatus removeStaIfaceInternal(const std::string& ifname);
+    std::pair<WifiStatus, sp<V1_0::IWifiRttController>> createRttControllerInternal(
+            const sp<IWifiIface>& bound_iface);
+    std::pair<WifiStatus, std::vector<WifiDebugRingBufferStatus>>
+    getDebugRingBuffersStatusInternal();
+    WifiStatus startLoggingToDebugRingBufferInternal(const hidl_string& ring_name,
+                                                     WifiDebugRingBufferVerboseLevel verbose_level,
+                                                     uint32_t max_interval_in_sec,
+                                                     uint32_t min_data_size_in_bytes);
+    WifiStatus forceDumpToDebugRingBufferInternal(const hidl_string& ring_name);
+    WifiStatus flushRingBufferToFileInternal();
+    WifiStatus stopLoggingToDebugRingBufferInternal();
+    std::pair<WifiStatus, WifiDebugHostWakeReasonStats> getDebugHostWakeReasonStatsInternal();
+    WifiStatus enableDebugErrorAlertsInternal(bool enable);
+    WifiStatus selectTxPowerScenarioInternal(V1_1::IWifiChip::TxPowerScenario scenario);
+    WifiStatus resetTxPowerScenarioInternal();
+    WifiStatus setLatencyModeInternal(LatencyMode mode);
+    WifiStatus registerEventCallbackInternal_1_2(
+            const sp<V1_2::IWifiChipEventCallback>& event_callback);
+    WifiStatus selectTxPowerScenarioInternal_1_2(TxPowerScenario scenario);
+    std::pair<WifiStatus, uint32_t> getCapabilitiesInternal_1_3();
+    std::pair<WifiStatus, uint32_t> getCapabilitiesInternal_1_5();
+    std::pair<WifiStatus, sp<V1_4::IWifiRttController>> createRttControllerInternal_1_4(
+            const sp<IWifiIface>& bound_iface);
+    WifiStatus registerEventCallbackInternal_1_4(
+            const sp<V1_4::IWifiChipEventCallback>& event_callback);
+    WifiStatus setMultiStaPrimaryConnectionInternal(const std::string& ifname);
+    WifiStatus setMultiStaUseCaseInternal(MultiStaUseCase use_case);
+    WifiStatus setCoexUnsafeChannelsInternal(std::vector<CoexUnsafeChannel> unsafe_channels,
+                                             uint32_t restrictions);
+    WifiStatus setCountryCodeInternal(const std::array<int8_t, 2>& code);
+    std::pair<WifiStatus, std::vector<WifiUsableChannel>> getUsableChannelsInternal(
+            WifiBand band, uint32_t ifaceModeMask, uint32_t filterMask);
+    WifiStatus handleChipConfiguration(std::unique_lock<std::recursive_mutex>* lock,
+                                       ChipModeId mode_id);
+    WifiStatus registerDebugRingBufferCallback();
+    WifiStatus registerRadioModeChangeCallback();
+
+    std::vector<V1_4::IWifiChip::ChipIfaceCombination> getCurrentModeIfaceCombinations();
+    std::map<IfaceType, size_t> getCurrentIfaceCombination();
+    std::vector<std::map<IfaceType, size_t>> expandIfaceCombinations(
+            const V1_4::IWifiChip::ChipIfaceCombination& combination);
+    bool canExpandedIfaceComboSupportIfaceOfTypeWithCurrentIfaces(
+            const std::map<IfaceType, size_t>& expanded_combo, IfaceType requested_type);
+    bool canCurrentModeSupportIfaceOfTypeWithCurrentIfaces(IfaceType requested_type);
+    bool canExpandedIfaceComboSupportIfaceCombo(const std::map<IfaceType, size_t>& expanded_combo,
+                                                const std::map<IfaceType, size_t>& req_combo);
+    bool canCurrentModeSupportIfaceCombo(const std::map<IfaceType, size_t>& req_combo);
+    bool canCurrentModeSupportIfaceOfType(IfaceType requested_type);
+    bool isValidModeId(ChipModeId mode_id);
+    bool isStaApConcurrencyAllowedInCurrentMode();
+    bool isDualStaConcurrencyAllowedInCurrentMode();
+    uint32_t startIdxOfApIface();
+    std::string getFirstActiveWlanIfaceName();
+    std::string allocateApOrStaIfaceName(IfaceType type, uint32_t start_idx);
+    std::string allocateApIfaceName();
+    std::vector<std::string> allocateBridgedApInstanceNames();
+    std::string allocateStaIfaceName();
+    bool writeRingbufferFilesInternal();
+    std::string getWlanIfaceNameWithType(IfaceType type, unsigned idx);
+    void invalidateAndClearBridgedApAll();
+    void invalidateAndClearBridgedAp(const std::string& br_name);
+    bool findUsingNameFromBridgedApInstances(const std::string& name);
+    WifiStatus triggerSubsystemRestartInternal();
+
+    ChipId chip_id_;
+    std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
+    std::weak_ptr<mode_controller::WifiModeController> mode_controller_;
+    std::shared_ptr<iface_util::WifiIfaceUtil> iface_util_;
+    std::vector<sp<WifiApIface>> ap_ifaces_;
+    std::vector<sp<WifiNanIface>> nan_ifaces_;
+    std::vector<sp<WifiP2pIface>> p2p_ifaces_;
+    std::vector<sp<WifiStaIface>> sta_ifaces_;
+    std::vector<sp<WifiRttController>> rtt_controllers_;
+    std::map<std::string, Ringbuffer> ringbuffer_map_;
+    bool is_valid_;
+    // Members pertaining to chip configuration.
+    uint32_t current_mode_id_;
+    std::mutex lock_t;
+    std::vector<V1_4::IWifiChip::ChipMode> modes_;
+    // The legacy ring buffer callback API has only a global callback
+    // registration mechanism. Use this to check if we have already
+    // registered a callback.
+    bool debug_ring_buffer_cb_registered_;
+    hidl_callback_util::HidlCallbackHandler<V1_4::IWifiChipEventCallback> event_cb_handler_;
+
+    const std::function<void(const std::string&)> subsystemCallbackHandler_;
+    std::map<std::string, std::vector<std::string>> br_ifaces_ap_instances_;
+    DISALLOW_COPY_AND_ASSIGN(WifiChip);
+};
+
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // WIFI_CHIP_H_
diff --git a/wifi/1.6/default/wifi_feature_flags.cpp b/wifi/1.6/default/wifi_feature_flags.cpp
new file mode 100644
index 0000000..71319e1
--- /dev/null
+++ b/wifi/1.6/default/wifi_feature_flags.cpp
@@ -0,0 +1,239 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <string>
+
+#include <android-base/logging.h>
+#include <cutils/properties.h>
+
+#include "wifi_feature_flags.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+namespace feature_flags {
+
+using V1_0::ChipModeId;
+using V1_0::IfaceType;
+using V1_0::IWifiChip;
+
+/* The chip may either have a single mode supporting any number of combinations,
+ * or a fixed dual-mode (so it involves firmware loading to switch between
+ * modes) setting. If there is a need to support more modes, it needs to be
+ * implemented manually in WiFi HAL (see changeFirmwareMode in
+ * WifiChip::handleChipConfiguration).
+ *
+ * Supported combinations are defined in device's makefile, for example:
+ *    WIFI_HAL_INTERFACE_COMBINATIONS := {{{STA, AP}, 1}, {{P2P, NAN}, 1}},
+ *    WIFI_HAL_INTERFACE_COMBINATIONS += {{{STA}, 1}, {{AP}, 2}}
+ * What means:
+ *    Interface combination 1: 1 STA or AP and 1 P2P or NAN concurrent iface
+ *                             operations.
+ *    Interface combination 2: 1 STA and 2 AP concurrent iface operations.
+ *
+ * For backward compatibility, the following makefile flags can be used to
+ * generate combinations list:
+ *  - WIFI_HIDL_FEATURE_DUAL_INTERFACE
+ *  - WIFI_HIDL_FEATURE_DISABLE_AP
+ *  - WIFI_HIDL_FEATURE_AWARE
+ * However, they are ignored if WIFI_HAL_INTERFACE_COMBINATIONS was provided.
+ * With WIFI_HIDL_FEATURE_DUAL_INTERFACE flag set, there is a single mode with
+ * two interface combinations:
+ *    Interface Combination 1: Will support 1 STA and 1 P2P or NAN (optional)
+ *                             concurrent iface operations.
+ *    Interface Combination 2: Will support 1 STA and 1 AP concurrent
+ *                             iface operations.
+ *
+ * The only dual-mode configuration supported is for alternating STA and AP
+ * mode, that may involve firmware reloading. In such case, there are 2 separate
+ * modes of operation with 1 interface combination each:
+ *    Mode 1 (STA mode): Will support 1 STA and 1 P2P or NAN (optional)
+ *                       concurrent iface operations.
+ *    Mode 2 (AP mode): Will support 1 AP iface operation.
+ *
+ * If Aware is enabled, the iface combination will be modified to support either
+ * P2P or NAN in place of just P2P.
+ */
+// clang-format off
+#ifdef WIFI_HAL_INTERFACE_COMBINATIONS
+constexpr ChipModeId kMainModeId = chip_mode_ids::kV3;
+#elif defined(WIFI_HIDL_FEATURE_DUAL_INTERFACE)
+// former V2 (fixed dual interface) setup expressed as V3
+constexpr ChipModeId kMainModeId = chip_mode_ids::kV3;
+#  ifdef WIFI_HIDL_FEATURE_DISABLE_AP
+#    ifdef WIFI_HIDL_FEATURE_AWARE
+//     1 STA + 1 of (P2P or NAN)
+#      define WIFI_HAL_INTERFACE_COMBINATIONS {{{STA}, 1}, {{P2P, NAN}, 1}}
+#    else
+//     1 STA + 1 P2P
+#      define WIFI_HAL_INTERFACE_COMBINATIONS {{{STA}, 1}, {{P2P}, 1}}
+#    endif
+#  else
+#    ifdef WIFI_HIDL_FEATURE_AWARE
+//     (1 STA + 1 AP) or (1 STA + 1 of (P2P or NAN))
+#      define WIFI_HAL_INTERFACE_COMBINATIONS {{{STA}, 1}, {{AP}, 1}},\
+                                              {{{STA}, 1}, {{P2P, NAN}, 1}}
+#    else
+//     (1 STA + 1 AP) or (1 STA + 1 P2P)
+#      define WIFI_HAL_INTERFACE_COMBINATIONS {{{STA}, 1}, {{AP}, 1}},\
+                                              {{{STA}, 1}, {{P2P}, 1}}
+#    endif
+#  endif
+#else
+// V1 (fixed single interface, dual-mode chip)
+constexpr ChipModeId kMainModeId = chip_mode_ids::kV1Sta;
+#  ifdef WIFI_HIDL_FEATURE_AWARE
+//   1 STA + 1 of (P2P or NAN)
+#    define WIFI_HAL_INTERFACE_COMBINATIONS {{{STA}, 1}, {{P2P, NAN}, 1}}
+#  else
+//   1 STA + 1 P2P
+#    define WIFI_HAL_INTERFACE_COMBINATIONS {{{STA}, 1}, {{P2P}, 1}}
+#  endif
+
+#  ifndef WIFI_HIDL_FEATURE_DISABLE_AP
+#    define WIFI_HAL_INTERFACE_COMBINATIONS_AP {{{AP}, 1}}
+#  endif
+#endif
+// clang-format on
+
+/**
+ * Helper class to convert a collection of combination limits to a combination.
+ *
+ * The main point here is to simplify the syntax required by
+ * WIFI_HAL_INTERFACE_COMBINATIONS.
+ */
+struct ChipIfaceCombination : public hidl_vec<IWifiChip::ChipIfaceCombinationLimit> {
+    ChipIfaceCombination(const std::initializer_list<IWifiChip::ChipIfaceCombinationLimit> list)
+        : hidl_vec(list) {}
+
+    operator IWifiChip::ChipIfaceCombination() const { return {*this}; }
+
+    static hidl_vec<IWifiChip::ChipIfaceCombination> make_vec(
+            const std::initializer_list<ChipIfaceCombination> list) {
+        return hidl_vec<IWifiChip::ChipIfaceCombination>(  //
+                std::begin(list), std::end(list));
+    }
+};
+
+#define STA IfaceType::STA
+#define AP IfaceType::AP
+#define P2P IfaceType::P2P
+#define NAN IfaceType::NAN
+static const std::vector<IWifiChip::ChipMode> kChipModesPrimary{
+        {kMainModeId, ChipIfaceCombination::make_vec({WIFI_HAL_INTERFACE_COMBINATIONS})},
+#ifdef WIFI_HAL_INTERFACE_COMBINATIONS_AP
+        {chip_mode_ids::kV1Ap,
+         ChipIfaceCombination::make_vec({WIFI_HAL_INTERFACE_COMBINATIONS_AP})},
+#endif
+};
+
+static const std::vector<IWifiChip::ChipMode> kChipModesSecondary{
+#ifdef WIFI_HAL_INTERFACE_COMBINATIONS_SECONDARY_CHIP
+        {chip_mode_ids::kV3,
+         ChipIfaceCombination::make_vec({WIFI_HAL_INTERFACE_COMBINATIONS_SECONDARY_CHIP})},
+#endif
+};
+
+constexpr char kDebugPresetInterfaceCombinationIdxProperty[] =
+        "persist.vendor.debug.wifi.hal.preset_interface_combination_idx";
+// List of pre-defined interface combinations that can be enabled at runtime via
+// setting the property: "kDebugPresetInterfaceCombinationIdxProperty" to the
+// corresponding index value.
+static const std::vector<std::pair<std::string, std::vector<IWifiChip::ChipMode>>> kDebugChipModes{
+        // Legacy combination - No STA/AP concurrencies.
+        // 0 - (1 AP) or (1 STA + 1 of (P2P or NAN))
+        {"No STA/AP Concurrency",
+         {{kMainModeId,
+           ChipIfaceCombination::make_vec({{{{AP}, 1}}, {{{STA}, 1}, {{P2P, NAN}, 1}}})}}},
+
+        // STA + AP concurrency
+        // 1 - (1 STA + 1 AP) or (1 STA + 1 of (P2P or NAN))
+        {"STA + AP Concurrency",
+         {{kMainModeId, ChipIfaceCombination::make_vec(
+                                {{{{STA}, 1}, {{AP}, 1}}, {{{STA}, 1}, {{P2P, NAN}, 1}}})}}},
+
+        // STA + STA concurrency
+        // 2 - (1 STA + 1 AP) or (2 STA + 1 of (P2P or NAN))
+        {"Dual STA Concurrency",
+         {{kMainModeId, ChipIfaceCombination::make_vec(
+                                {{{{STA}, 1}, {{AP}, 1}}, {{{STA}, 2}, {{P2P, NAN}, 1}}})}}},
+
+        // AP + AP + STA concurrency
+        // 3 - (1 STA + 2 AP) or (1 STA + 1 of (P2P or NAN))
+        {"Dual AP Concurrency",
+         {{kMainModeId, ChipIfaceCombination::make_vec(
+                                {{{{STA}, 1}, {{AP}, 2}}, {{{STA}, 1}, {{P2P, NAN}, 1}}})}}},
+
+        // STA + STA concurrency and AP + AP + STA concurrency
+        // 4 - (1 STA + 2 AP) or (2 STA + 1 of (P2P or NAN))
+        {"Dual STA & Dual AP Concurrency",
+         {{kMainModeId, ChipIfaceCombination::make_vec(
+                                {{{{STA}, 1}, {{AP}, 2}}, {{{STA}, 2}, {{P2P, NAN}, 1}}})}}},
+
+        // STA + STA concurrency
+        // 5 - (1 STA + 1 AP (bridged or single) | P2P | NAN), or (2 STA))
+        {"Dual STA or STA plus single other interface",
+         {{kMainModeId,
+           ChipIfaceCombination::make_vec({{{{STA}, 1}, {{P2P, NAN, AP}, 1}}, {{{STA}, 2}}})}}}};
+
+#undef STA
+#undef AP
+#undef P2P
+#undef NAN
+
+#ifdef WIFI_HIDL_FEATURE_DISABLE_AP_MAC_RANDOMIZATION
+#pragma message                                                                   \
+        "WIFI_HIDL_FEATURE_DISABLE_AP_MAC_RANDOMIZATION is deprecated; override " \
+        "'config_wifi_ap_randomization_supported' in "                            \
+        "frameworks/base/core/res/res/values/config.xml in the device overlay "   \
+        "instead"
+#endif  // WIFI_HIDL_FEATURE_DISABLE_AP_MAC_RANDOMIZATION
+
+WifiFeatureFlags::WifiFeatureFlags() {}
+
+std::vector<IWifiChip::ChipMode> WifiFeatureFlags::getChipModesForPrimary() {
+    std::array<char, PROPERTY_VALUE_MAX> buffer;
+    auto res = property_get(kDebugPresetInterfaceCombinationIdxProperty, buffer.data(), nullptr);
+    // Debug propety not set, use the device preset interface combination.
+    if (res <= 0) return kChipModesPrimary;
+
+    // Debug propety set, use one of the debug preset interface combination.
+    unsigned long idx = std::stoul(buffer.data());
+    if (idx >= kDebugChipModes.size()) {
+        LOG(ERROR) << "Invalid index set in property: "
+                   << kDebugPresetInterfaceCombinationIdxProperty;
+        return kChipModesPrimary;
+    }
+    std::string name;
+    std::vector<IWifiChip::ChipMode> chip_modes;
+    std::tie(name, chip_modes) = kDebugChipModes[idx];
+    LOG(INFO) << "Using debug chip mode: <" << name
+              << "> set via property: " << kDebugPresetInterfaceCombinationIdxProperty;
+    return chip_modes;
+}
+
+std::vector<IWifiChip::ChipMode> WifiFeatureFlags::getChipModes(bool is_primary) {
+    return (is_primary) ? getChipModesForPrimary() : kChipModesSecondary;
+}
+
+}  // namespace feature_flags
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.6/default/wifi_feature_flags.h b/wifi/1.6/default/wifi_feature_flags.h
new file mode 100644
index 0000000..d5844d9
--- /dev/null
+++ b/wifi/1.6/default/wifi_feature_flags.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef WIFI_FEATURE_FLAGS_H_
+#define WIFI_FEATURE_FLAGS_H_
+
+#include <android/hardware/wifi/1.2/IWifiChip.h>
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+namespace feature_flags {
+
+namespace chip_mode_ids {
+// These mode ID's should be unique (even across combo versions). Refer to
+// handleChipConfiguration() for it's usage.
+constexpr V1_0::ChipModeId kInvalid = UINT32_MAX;
+// Mode ID's for V1
+constexpr V1_0::ChipModeId kV1Sta = 0;
+constexpr V1_0::ChipModeId kV1Ap = 1;
+// Mode ID for V3
+constexpr V1_0::ChipModeId kV3 = 3;
+}  // namespace chip_mode_ids
+
+class WifiFeatureFlags {
+  public:
+    WifiFeatureFlags();
+    virtual ~WifiFeatureFlags() = default;
+
+    virtual std::vector<V1_0::IWifiChip::ChipMode> getChipModes(bool is_primary);
+
+  private:
+    std::vector<V1_0::IWifiChip::ChipMode> getChipModesForPrimary();
+};
+
+}  // namespace feature_flags
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // WIFI_FEATURE_FLAGS_H_
diff --git a/wifi/1.6/default/wifi_iface_util.cpp b/wifi/1.6/default/wifi_iface_util.cpp
new file mode 100644
index 0000000..d55e4f8
--- /dev/null
+++ b/wifi/1.6/default/wifi_iface_util.cpp
@@ -0,0 +1,176 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <net/if.h>
+#include <cstddef>
+#include <iostream>
+#include <limits>
+#include <random>
+
+#include <android-base/logging.h>
+#include <android-base/macros.h>
+#include <private/android_filesystem_config.h>
+
+#undef NAN
+#include "wifi_iface_util.h"
+
+namespace {
+// Constants to set the local bit & clear the multicast bit.
+constexpr uint8_t kMacAddressMulticastMask = 0x01;
+constexpr uint8_t kMacAddressLocallyAssignedMask = 0x02;
+}  // namespace
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+namespace iface_util {
+
+WifiIfaceUtil::WifiIfaceUtil(const std::weak_ptr<wifi_system::InterfaceTool> iface_tool,
+                             const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal)
+    : iface_tool_(iface_tool),
+      legacy_hal_(legacy_hal),
+      random_mac_address_(nullptr),
+      event_handlers_map_() {}
+
+std::array<uint8_t, 6> WifiIfaceUtil::getFactoryMacAddress(const std::string& iface_name) {
+    return iface_tool_.lock()->GetFactoryMacAddress(iface_name.c_str());
+}
+
+bool WifiIfaceUtil::setMacAddress(const std::string& iface_name,
+                                  const std::array<uint8_t, 6>& mac) {
+#ifndef WIFI_AVOID_IFACE_RESET_MAC_CHANGE
+    legacy_hal::wifi_error legacy_status;
+    uint64_t legacy_feature_set;
+    std::tie(legacy_status, legacy_feature_set) =
+            legacy_hal_.lock()->getSupportedFeatureSet(iface_name);
+
+    if (!(legacy_feature_set & WIFI_FEATURE_DYNAMIC_SET_MAC) &&
+        !iface_tool_.lock()->SetUpState(iface_name.c_str(), false)) {
+        LOG(ERROR) << "SetUpState(false) failed.";
+        return false;
+    }
+#endif
+    bool success = iface_tool_.lock()->SetMacAddress(iface_name.c_str(), mac);
+#ifndef WIFI_AVOID_IFACE_RESET_MAC_CHANGE
+    if (!(legacy_feature_set & WIFI_FEATURE_DYNAMIC_SET_MAC) &&
+        !iface_tool_.lock()->SetUpState(iface_name.c_str(), true)) {
+        LOG(ERROR) << "SetUpState(true) failed. Wait for driver ready.";
+        // Wait for driver ready and try to set iface UP again
+        if (legacy_hal_.lock()->waitForDriverReady() != legacy_hal::WIFI_SUCCESS) {
+            LOG(ERROR) << "SetUpState(true) wait for driver ready failed.";
+            return false;
+        }
+        if (!iface_tool_.lock()->SetUpState(iface_name.c_str(), true)) {
+            LOG(ERROR) << "SetUpState(true) failed after retry.";
+            return false;
+        }
+    }
+#endif
+    IfaceEventHandlers event_handlers = {};
+    const auto it = event_handlers_map_.find(iface_name);
+    if (it != event_handlers_map_.end()) {
+        event_handlers = it->second;
+    }
+    if (event_handlers.on_state_toggle_off_on != nullptr) {
+        event_handlers.on_state_toggle_off_on(iface_name);
+    }
+    if (!success) {
+        LOG(ERROR) << "SetMacAddress failed on " << iface_name;
+    } else {
+        LOG(DEBUG) << "SetMacAddress succeeded on " << iface_name;
+    }
+    return success;
+}
+
+std::array<uint8_t, 6> WifiIfaceUtil::getOrCreateRandomMacAddress() {
+    if (random_mac_address_) {
+        return *random_mac_address_.get();
+    }
+    random_mac_address_ = std::make_unique<std::array<uint8_t, 6>>(createRandomMacAddress());
+    return *random_mac_address_.get();
+}
+
+void WifiIfaceUtil::registerIfaceEventHandlers(const std::string& iface_name,
+                                               IfaceEventHandlers handlers) {
+    event_handlers_map_[iface_name] = handlers;
+}
+
+void WifiIfaceUtil::unregisterIfaceEventHandlers(const std::string& iface_name) {
+    event_handlers_map_.erase(iface_name);
+}
+
+std::array<uint8_t, 6> WifiIfaceUtil::createRandomMacAddress() {
+    std::array<uint8_t, 6> address = {};
+    std::random_device rd;
+    std::default_random_engine engine(rd());
+    std::uniform_int_distribution<uint8_t> dist(std::numeric_limits<uint8_t>::min(),
+                                                std::numeric_limits<uint8_t>::max());
+    for (size_t i = 0; i < address.size(); i++) {
+        address[i] = dist(engine);
+    }
+    // Set the local bit and clear the multicast bit.
+    address[0] |= kMacAddressLocallyAssignedMask;
+    address[0] &= ~kMacAddressMulticastMask;
+    return address;
+}
+
+bool WifiIfaceUtil::setUpState(const std::string& iface_name, bool request_up) {
+    if (!iface_tool_.lock()->SetUpState(iface_name.c_str(), request_up)) {
+        LOG(ERROR) << "SetUpState to " << request_up << " failed";
+        return false;
+    }
+    return true;
+}
+
+unsigned WifiIfaceUtil::ifNameToIndex(const std::string& iface_name) {
+    return if_nametoindex(iface_name.c_str());
+}
+
+bool WifiIfaceUtil::createBridge(const std::string& br_name) {
+    if (!iface_tool_.lock()->createBridge(br_name)) {
+        return false;
+    }
+
+    if (!iface_tool_.lock()->SetUpState(br_name.c_str(), true)) {
+        LOG(ERROR) << "bridge SetUpState(true) failed.";
+    }
+    return true;
+}
+
+bool WifiIfaceUtil::deleteBridge(const std::string& br_name) {
+    if (!iface_tool_.lock()->SetUpState(br_name.c_str(), false)) {
+        LOG(INFO) << "SetUpState(false) failed for bridge=" << br_name.c_str();
+    }
+
+    return iface_tool_.lock()->deleteBridge(br_name);
+}
+
+bool WifiIfaceUtil::addIfaceToBridge(const std::string& br_name, const std::string& if_name) {
+    return iface_tool_.lock()->addIfaceToBridge(br_name, if_name);
+}
+
+bool WifiIfaceUtil::removeIfaceFromBridge(const std::string& br_name, const std::string& if_name) {
+    return iface_tool_.lock()->removeIfaceFromBridge(br_name, if_name);
+}
+
+}  // namespace iface_util
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.6/default/wifi_iface_util.h b/wifi/1.6/default/wifi_iface_util.h
new file mode 100644
index 0000000..c5db5de
--- /dev/null
+++ b/wifi/1.6/default/wifi_iface_util.h
@@ -0,0 +1,87 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef WIFI_IFACE_UTIL_H_
+#define WIFI_IFACE_UTIL_H_
+
+#include <wifi_system/interface_tool.h>
+
+#include <android/hardware/wifi/1.0/IWifi.h>
+
+#include "wifi_legacy_hal.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+namespace iface_util {
+
+// Iface event handlers.
+struct IfaceEventHandlers {
+    // Callback to be invoked when the iface is set down & up for MAC address
+    // change.
+    std::function<void(const std::string& iface_name)> on_state_toggle_off_on;
+};
+
+/**
+ * Util class for common iface operations.
+ */
+class WifiIfaceUtil {
+  public:
+    WifiIfaceUtil(const std::weak_ptr<wifi_system::InterfaceTool> iface_tool,
+                  const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal);
+    virtual ~WifiIfaceUtil() = default;
+
+    virtual std::array<uint8_t, 6> getFactoryMacAddress(const std::string& iface_name);
+    virtual bool setMacAddress(const std::string& iface_name, const std::array<uint8_t, 6>& mac);
+    // Get or create a random MAC address. The MAC address returned from
+    // this method will remain the same throughout the lifetime of the HAL
+    // daemon. (So, changes on every reboot)
+    virtual std::array<uint8_t, 6> getOrCreateRandomMacAddress();
+
+    // Register for any iface event callbacks for the provided interface.
+    virtual void registerIfaceEventHandlers(const std::string& iface_name,
+                                            IfaceEventHandlers handlers);
+    virtual void unregisterIfaceEventHandlers(const std::string& iface_name);
+    virtual bool setUpState(const std::string& iface_name, bool request_up);
+    virtual unsigned ifNameToIndex(const std::string& iface_name);
+
+    virtual bool createBridge(const std::string& br_name);
+
+    virtual bool deleteBridge(const std::string& br_name);
+
+    virtual bool addIfaceToBridge(const std::string& br_name, const std::string& if_name);
+
+    virtual bool removeIfaceFromBridge(const std::string& br_name, const std::string& if_name);
+    // Get a random MAC address.
+    virtual std::array<uint8_t, 6> createRandomMacAddress();
+
+  private:
+    std::weak_ptr<wifi_system::InterfaceTool> iface_tool_;
+    std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
+    std::unique_ptr<std::array<uint8_t, 6>> random_mac_address_;
+    std::map<std::string, IfaceEventHandlers> event_handlers_map_;
+};
+
+}  // namespace iface_util
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // WIFI_IFACE_UTIL_H_
diff --git a/wifi/1.6/default/wifi_legacy_hal.cpp b/wifi/1.6/default/wifi_legacy_hal.cpp
new file mode 100644
index 0000000..e6e8141
--- /dev/null
+++ b/wifi/1.6/default/wifi_legacy_hal.cpp
@@ -0,0 +1,1578 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <array>
+#include <chrono>
+
+#include <android-base/logging.h>
+#include <cutils/properties.h>
+#include <net/if.h>
+
+#include "hidl_sync_util.h"
+#include "wifi_legacy_hal.h"
+#include "wifi_legacy_hal_stubs.h"
+
+namespace {
+// Constants ported over from the legacy HAL calling code
+// (com_android_server_wifi_WifiNative.cpp). This will all be thrown
+// away when this shim layer is replaced by the real vendor
+// implementation.
+static constexpr uint32_t kMaxVersionStringLength = 256;
+static constexpr uint32_t kMaxCachedGscanResults = 64;
+static constexpr uint32_t kMaxGscanFrequenciesForBand = 64;
+static constexpr uint32_t kLinkLayerStatsDataMpduSizeThreshold = 128;
+static constexpr uint32_t kMaxWakeReasonStatsArraySize = 32;
+static constexpr uint32_t kMaxRingBuffers = 10;
+static constexpr uint32_t kMaxWifiUsableChannels = 256;
+// need a long timeout (1000ms) for chips that unload their driver.
+static constexpr uint32_t kMaxStopCompleteWaitMs = 1000;
+static constexpr char kDriverPropName[] = "wlan.driver.status";
+
+// Helper function to create a non-const char* for legacy Hal API's.
+std::vector<char> makeCharVec(const std::string& str) {
+    std::vector<char> vec(str.size() + 1);
+    vec.assign(str.begin(), str.end());
+    vec.push_back('\0');
+    return vec;
+}
+}  // namespace
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+namespace legacy_hal {
+
+// Legacy HAL functions accept "C" style function pointers, so use global
+// functions to pass to the legacy HAL function and store the corresponding
+// std::function methods to be invoked.
+//
+// Callback to be invoked once |stop| is complete
+std::function<void(wifi_handle handle)> on_stop_complete_internal_callback;
+void onAsyncStopComplete(wifi_handle handle) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_stop_complete_internal_callback) {
+        on_stop_complete_internal_callback(handle);
+        // Invalidate this callback since we don't want this firing again.
+        on_stop_complete_internal_callback = nullptr;
+    }
+}
+
+// Callback to be invoked for driver dump.
+std::function<void(char*, int)> on_driver_memory_dump_internal_callback;
+void onSyncDriverMemoryDump(char* buffer, int buffer_size) {
+    if (on_driver_memory_dump_internal_callback) {
+        on_driver_memory_dump_internal_callback(buffer, buffer_size);
+    }
+}
+
+// Callback to be invoked for firmware dump.
+std::function<void(char*, int)> on_firmware_memory_dump_internal_callback;
+void onSyncFirmwareMemoryDump(char* buffer, int buffer_size) {
+    if (on_firmware_memory_dump_internal_callback) {
+        on_firmware_memory_dump_internal_callback(buffer, buffer_size);
+    }
+}
+
+// Callback to be invoked for Gscan events.
+std::function<void(wifi_request_id, wifi_scan_event)> on_gscan_event_internal_callback;
+void onAsyncGscanEvent(wifi_request_id id, wifi_scan_event event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_gscan_event_internal_callback) {
+        on_gscan_event_internal_callback(id, event);
+    }
+}
+
+// Callback to be invoked for Gscan full results.
+std::function<void(wifi_request_id, wifi_scan_result*, uint32_t)>
+        on_gscan_full_result_internal_callback;
+void onAsyncGscanFullResult(wifi_request_id id, wifi_scan_result* result,
+                            uint32_t buckets_scanned) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_gscan_full_result_internal_callback) {
+        on_gscan_full_result_internal_callback(id, result, buckets_scanned);
+    }
+}
+
+// Callback to be invoked for link layer stats results.
+std::function<void((wifi_request_id, wifi_iface_stat*, int, wifi_radio_stat*))>
+        on_link_layer_stats_result_internal_callback;
+void onSyncLinkLayerStatsResult(wifi_request_id id, wifi_iface_stat* iface_stat, int num_radios,
+                                wifi_radio_stat* radio_stat) {
+    if (on_link_layer_stats_result_internal_callback) {
+        on_link_layer_stats_result_internal_callback(id, iface_stat, num_radios, radio_stat);
+    }
+}
+
+// Callback to be invoked for rssi threshold breach.
+std::function<void((wifi_request_id, uint8_t*, int8_t))>
+        on_rssi_threshold_breached_internal_callback;
+void onAsyncRssiThresholdBreached(wifi_request_id id, uint8_t* bssid, int8_t rssi) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_rssi_threshold_breached_internal_callback) {
+        on_rssi_threshold_breached_internal_callback(id, bssid, rssi);
+    }
+}
+
+// Callback to be invoked for ring buffer data indication.
+std::function<void(char*, char*, int, wifi_ring_buffer_status*)>
+        on_ring_buffer_data_internal_callback;
+void onAsyncRingBufferData(char* ring_name, char* buffer, int buffer_size,
+                           wifi_ring_buffer_status* status) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_ring_buffer_data_internal_callback) {
+        on_ring_buffer_data_internal_callback(ring_name, buffer, buffer_size, status);
+    }
+}
+
+// Callback to be invoked for error alert indication.
+std::function<void(wifi_request_id, char*, int, int)> on_error_alert_internal_callback;
+void onAsyncErrorAlert(wifi_request_id id, char* buffer, int buffer_size, int err_code) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_error_alert_internal_callback) {
+        on_error_alert_internal_callback(id, buffer, buffer_size, err_code);
+    }
+}
+
+// Callback to be invoked for radio mode change indication.
+std::function<void(wifi_request_id, uint32_t, wifi_mac_info*)>
+        on_radio_mode_change_internal_callback;
+void onAsyncRadioModeChange(wifi_request_id id, uint32_t num_macs, wifi_mac_info* mac_infos) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_radio_mode_change_internal_callback) {
+        on_radio_mode_change_internal_callback(id, num_macs, mac_infos);
+    }
+}
+
+// Callback to be invoked to report subsystem restart
+std::function<void(const char*)> on_subsystem_restart_internal_callback;
+void onAsyncSubsystemRestart(const char* error) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_subsystem_restart_internal_callback) {
+        on_subsystem_restart_internal_callback(error);
+    }
+}
+
+// Callback to be invoked for rtt results results.
+std::function<void(wifi_request_id, unsigned num_results, wifi_rtt_result* rtt_results[])>
+        on_rtt_results_internal_callback;
+void onAsyncRttResults(wifi_request_id id, unsigned num_results, wifi_rtt_result* rtt_results[]) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_rtt_results_internal_callback) {
+        on_rtt_results_internal_callback(id, num_results, rtt_results);
+        on_rtt_results_internal_callback = nullptr;
+    }
+}
+
+// Callbacks for the various NAN operations.
+// NOTE: These have very little conversions to perform before invoking the user
+// callbacks.
+// So, handle all of them here directly to avoid adding an unnecessary layer.
+std::function<void(transaction_id, const NanResponseMsg&)> on_nan_notify_response_user_callback;
+void onAysncNanNotifyResponse(transaction_id id, NanResponseMsg* msg) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_notify_response_user_callback && msg) {
+        on_nan_notify_response_user_callback(id, *msg);
+    }
+}
+
+std::function<void(const NanPublishRepliedInd&)> on_nan_event_publish_replied_user_callback;
+void onAysncNanEventPublishReplied(NanPublishRepliedInd* /* event */) {
+    LOG(ERROR) << "onAysncNanEventPublishReplied triggered";
+}
+
+std::function<void(const NanPublishTerminatedInd&)> on_nan_event_publish_terminated_user_callback;
+void onAysncNanEventPublishTerminated(NanPublishTerminatedInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_publish_terminated_user_callback && event) {
+        on_nan_event_publish_terminated_user_callback(*event);
+    }
+}
+
+std::function<void(const NanMatchInd&)> on_nan_event_match_user_callback;
+void onAysncNanEventMatch(NanMatchInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_match_user_callback && event) {
+        on_nan_event_match_user_callback(*event);
+    }
+}
+
+std::function<void(const NanMatchExpiredInd&)> on_nan_event_match_expired_user_callback;
+void onAysncNanEventMatchExpired(NanMatchExpiredInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_match_expired_user_callback && event) {
+        on_nan_event_match_expired_user_callback(*event);
+    }
+}
+
+std::function<void(const NanSubscribeTerminatedInd&)>
+        on_nan_event_subscribe_terminated_user_callback;
+void onAysncNanEventSubscribeTerminated(NanSubscribeTerminatedInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_subscribe_terminated_user_callback && event) {
+        on_nan_event_subscribe_terminated_user_callback(*event);
+    }
+}
+
+std::function<void(const NanFollowupInd&)> on_nan_event_followup_user_callback;
+void onAysncNanEventFollowup(NanFollowupInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_followup_user_callback && event) {
+        on_nan_event_followup_user_callback(*event);
+    }
+}
+
+std::function<void(const NanDiscEngEventInd&)> on_nan_event_disc_eng_event_user_callback;
+void onAysncNanEventDiscEngEvent(NanDiscEngEventInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_disc_eng_event_user_callback && event) {
+        on_nan_event_disc_eng_event_user_callback(*event);
+    }
+}
+
+std::function<void(const NanDisabledInd&)> on_nan_event_disabled_user_callback;
+void onAysncNanEventDisabled(NanDisabledInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_disabled_user_callback && event) {
+        on_nan_event_disabled_user_callback(*event);
+    }
+}
+
+std::function<void(const NanTCAInd&)> on_nan_event_tca_user_callback;
+void onAysncNanEventTca(NanTCAInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_tca_user_callback && event) {
+        on_nan_event_tca_user_callback(*event);
+    }
+}
+
+std::function<void(const NanBeaconSdfPayloadInd&)> on_nan_event_beacon_sdf_payload_user_callback;
+void onAysncNanEventBeaconSdfPayload(NanBeaconSdfPayloadInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_beacon_sdf_payload_user_callback && event) {
+        on_nan_event_beacon_sdf_payload_user_callback(*event);
+    }
+}
+
+std::function<void(const NanDataPathRequestInd&)> on_nan_event_data_path_request_user_callback;
+void onAysncNanEventDataPathRequest(NanDataPathRequestInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_data_path_request_user_callback && event) {
+        on_nan_event_data_path_request_user_callback(*event);
+    }
+}
+std::function<void(const NanDataPathConfirmInd&)> on_nan_event_data_path_confirm_user_callback;
+void onAysncNanEventDataPathConfirm(NanDataPathConfirmInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_data_path_confirm_user_callback && event) {
+        on_nan_event_data_path_confirm_user_callback(*event);
+    }
+}
+
+std::function<void(const NanDataPathEndInd&)> on_nan_event_data_path_end_user_callback;
+void onAysncNanEventDataPathEnd(NanDataPathEndInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_data_path_end_user_callback && event) {
+        on_nan_event_data_path_end_user_callback(*event);
+    }
+}
+
+std::function<void(const NanTransmitFollowupInd&)> on_nan_event_transmit_follow_up_user_callback;
+void onAysncNanEventTransmitFollowUp(NanTransmitFollowupInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_transmit_follow_up_user_callback && event) {
+        on_nan_event_transmit_follow_up_user_callback(*event);
+    }
+}
+
+std::function<void(const NanRangeRequestInd&)> on_nan_event_range_request_user_callback;
+void onAysncNanEventRangeRequest(NanRangeRequestInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_range_request_user_callback && event) {
+        on_nan_event_range_request_user_callback(*event);
+    }
+}
+
+std::function<void(const NanRangeReportInd&)> on_nan_event_range_report_user_callback;
+void onAysncNanEventRangeReport(NanRangeReportInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_range_report_user_callback && event) {
+        on_nan_event_range_report_user_callback(*event);
+    }
+}
+
+std::function<void(const NanDataPathScheduleUpdateInd&)> on_nan_event_schedule_update_user_callback;
+void onAsyncNanEventScheduleUpdate(NanDataPathScheduleUpdateInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_schedule_update_user_callback && event) {
+        on_nan_event_schedule_update_user_callback(*event);
+    }
+}
+
+// Callbacks for the various TWT operations.
+std::function<void(const TwtSetupResponse&)> on_twt_event_setup_response_callback;
+void onAsyncTwtEventSetupResponse(TwtSetupResponse* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_twt_event_setup_response_callback && event) {
+        on_twt_event_setup_response_callback(*event);
+    }
+}
+
+std::function<void(const TwtTeardownCompletion&)> on_twt_event_teardown_completion_callback;
+void onAsyncTwtEventTeardownCompletion(TwtTeardownCompletion* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_twt_event_teardown_completion_callback && event) {
+        on_twt_event_teardown_completion_callback(*event);
+    }
+}
+
+std::function<void(const TwtInfoFrameReceived&)> on_twt_event_info_frame_received_callback;
+void onAsyncTwtEventInfoFrameReceived(TwtInfoFrameReceived* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_twt_event_info_frame_received_callback && event) {
+        on_twt_event_info_frame_received_callback(*event);
+    }
+}
+
+std::function<void(const TwtDeviceNotify&)> on_twt_event_device_notify_callback;
+void onAsyncTwtEventDeviceNotify(TwtDeviceNotify* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_twt_event_device_notify_callback && event) {
+        on_twt_event_device_notify_callback(*event);
+    }
+}
+
+// End of the free-standing "C" style callbacks.
+
+WifiLegacyHal::WifiLegacyHal(const std::weak_ptr<wifi_system::InterfaceTool> iface_tool,
+                             const wifi_hal_fn& fn, bool is_primary)
+    : global_func_table_(fn),
+      global_handle_(nullptr),
+      awaiting_event_loop_termination_(false),
+      is_started_(false),
+      iface_tool_(iface_tool),
+      is_primary_(is_primary) {}
+
+wifi_error WifiLegacyHal::initialize() {
+    LOG(DEBUG) << "Initialize legacy HAL";
+    // this now does nothing, since HAL function table is provided
+    // to the constructor
+    return WIFI_SUCCESS;
+}
+
+wifi_error WifiLegacyHal::start() {
+    // Ensure that we're starting in a good state.
+    CHECK(global_func_table_.wifi_initialize && !global_handle_ && iface_name_to_handle_.empty() &&
+          !awaiting_event_loop_termination_);
+    if (is_started_) {
+        LOG(DEBUG) << "Legacy HAL already started";
+        return WIFI_SUCCESS;
+    }
+    LOG(DEBUG) << "Waiting for the driver ready";
+    wifi_error status = global_func_table_.wifi_wait_for_driver_ready();
+    if (status == WIFI_ERROR_TIMED_OUT || status == WIFI_ERROR_UNKNOWN) {
+        LOG(ERROR) << "Failed or timed out awaiting driver ready";
+        return status;
+    }
+
+    if (is_primary_) {
+        property_set(kDriverPropName, "ok");
+
+        if (!iface_tool_.lock()->SetWifiUpState(true)) {
+            LOG(ERROR) << "Failed to set WiFi interface up";
+            return WIFI_ERROR_UNKNOWN;
+        }
+    }
+
+    LOG(DEBUG) << "Starting legacy HAL";
+    status = global_func_table_.wifi_initialize(&global_handle_);
+    if (status != WIFI_SUCCESS || !global_handle_) {
+        LOG(ERROR) << "Failed to retrieve global handle";
+        return status;
+    }
+    std::thread(&WifiLegacyHal::runEventLoop, this).detach();
+    status = retrieveIfaceHandles();
+    if (status != WIFI_SUCCESS || iface_name_to_handle_.empty()) {
+        LOG(ERROR) << "Failed to retrieve wlan interface handle";
+        return status;
+    }
+    LOG(DEBUG) << "Legacy HAL start complete";
+    is_started_ = true;
+    return WIFI_SUCCESS;
+}
+
+wifi_error WifiLegacyHal::stop(
+        /* NONNULL */ std::unique_lock<std::recursive_mutex>* lock,
+        const std::function<void()>& on_stop_complete_user_callback) {
+    if (!is_started_) {
+        LOG(DEBUG) << "Legacy HAL already stopped";
+        on_stop_complete_user_callback();
+        return WIFI_SUCCESS;
+    }
+    LOG(DEBUG) << "Stopping legacy HAL";
+    on_stop_complete_internal_callback = [on_stop_complete_user_callback,
+                                          this](wifi_handle handle) {
+        CHECK_EQ(global_handle_, handle) << "Handle mismatch";
+        LOG(INFO) << "Legacy HAL stop complete callback received";
+        // Invalidate all the internal pointers now that the HAL is
+        // stopped.
+        invalidate();
+        if (is_primary_) iface_tool_.lock()->SetWifiUpState(false);
+        on_stop_complete_user_callback();
+        is_started_ = false;
+    };
+    awaiting_event_loop_termination_ = true;
+    global_func_table_.wifi_cleanup(global_handle_, onAsyncStopComplete);
+    const auto status =
+            stop_wait_cv_.wait_for(*lock, std::chrono::milliseconds(kMaxStopCompleteWaitMs),
+                                   [this] { return !awaiting_event_loop_termination_; });
+    if (!status) {
+        LOG(ERROR) << "Legacy HAL stop failed or timed out";
+        return WIFI_ERROR_UNKNOWN;
+    }
+    LOG(DEBUG) << "Legacy HAL stop complete";
+    return WIFI_SUCCESS;
+}
+
+bool WifiLegacyHal::isStarted() {
+    return is_started_;
+}
+
+wifi_error WifiLegacyHal::waitForDriverReady() {
+    return global_func_table_.wifi_wait_for_driver_ready();
+}
+
+std::pair<wifi_error, std::string> WifiLegacyHal::getDriverVersion(const std::string& iface_name) {
+    std::array<char, kMaxVersionStringLength> buffer;
+    buffer.fill(0);
+    wifi_error status = global_func_table_.wifi_get_driver_version(getIfaceHandle(iface_name),
+                                                                   buffer.data(), buffer.size());
+    return {status, buffer.data()};
+}
+
+std::pair<wifi_error, std::string> WifiLegacyHal::getFirmwareVersion(
+        const std::string& iface_name) {
+    std::array<char, kMaxVersionStringLength> buffer;
+    buffer.fill(0);
+    wifi_error status = global_func_table_.wifi_get_firmware_version(getIfaceHandle(iface_name),
+                                                                     buffer.data(), buffer.size());
+    return {status, buffer.data()};
+}
+
+std::pair<wifi_error, std::vector<uint8_t>> WifiLegacyHal::requestDriverMemoryDump(
+        const std::string& iface_name) {
+    std::vector<uint8_t> driver_dump;
+    on_driver_memory_dump_internal_callback = [&driver_dump](char* buffer, int buffer_size) {
+        driver_dump.insert(driver_dump.end(), reinterpret_cast<uint8_t*>(buffer),
+                           reinterpret_cast<uint8_t*>(buffer) + buffer_size);
+    };
+    wifi_error status = global_func_table_.wifi_get_driver_memory_dump(getIfaceHandle(iface_name),
+                                                                       {onSyncDriverMemoryDump});
+    on_driver_memory_dump_internal_callback = nullptr;
+    return {status, std::move(driver_dump)};
+}
+
+std::pair<wifi_error, std::vector<uint8_t>> WifiLegacyHal::requestFirmwareMemoryDump(
+        const std::string& iface_name) {
+    std::vector<uint8_t> firmware_dump;
+    on_firmware_memory_dump_internal_callback = [&firmware_dump](char* buffer, int buffer_size) {
+        firmware_dump.insert(firmware_dump.end(), reinterpret_cast<uint8_t*>(buffer),
+                             reinterpret_cast<uint8_t*>(buffer) + buffer_size);
+    };
+    wifi_error status = global_func_table_.wifi_get_firmware_memory_dump(
+            getIfaceHandle(iface_name), {onSyncFirmwareMemoryDump});
+    on_firmware_memory_dump_internal_callback = nullptr;
+    return {status, std::move(firmware_dump)};
+}
+
+std::pair<wifi_error, uint64_t> WifiLegacyHal::getSupportedFeatureSet(
+        const std::string& iface_name) {
+    feature_set set = 0, chip_set = 0;
+    wifi_error status = WIFI_SUCCESS;
+
+    static_assert(sizeof(set) == sizeof(uint64_t),
+                  "Some feature_flags can not be represented in output");
+    wifi_interface_handle iface_handle = getIfaceHandle(iface_name);
+
+    global_func_table_.wifi_get_chip_feature_set(
+            global_handle_, &chip_set); /* ignore error, chip_set will stay 0 */
+
+    if (iface_handle) {
+        status = global_func_table_.wifi_get_supported_feature_set(iface_handle, &set);
+    }
+    return {status, static_cast<uint64_t>(set | chip_set)};
+}
+
+std::pair<wifi_error, PacketFilterCapabilities> WifiLegacyHal::getPacketFilterCapabilities(
+        const std::string& iface_name) {
+    PacketFilterCapabilities caps;
+    wifi_error status = global_func_table_.wifi_get_packet_filter_capabilities(
+            getIfaceHandle(iface_name), &caps.version, &caps.max_len);
+    return {status, caps};
+}
+
+wifi_error WifiLegacyHal::setPacketFilter(const std::string& iface_name,
+                                          const std::vector<uint8_t>& program) {
+    return global_func_table_.wifi_set_packet_filter(getIfaceHandle(iface_name), program.data(),
+                                                     program.size());
+}
+
+std::pair<wifi_error, std::vector<uint8_t>> WifiLegacyHal::readApfPacketFilterData(
+        const std::string& iface_name) {
+    PacketFilterCapabilities caps;
+    wifi_error status = global_func_table_.wifi_get_packet_filter_capabilities(
+            getIfaceHandle(iface_name), &caps.version, &caps.max_len);
+    if (status != WIFI_SUCCESS) {
+        return {status, {}};
+    }
+
+    // Size the buffer to read the entire program & work memory.
+    std::vector<uint8_t> buffer(caps.max_len);
+
+    status = global_func_table_.wifi_read_packet_filter(
+            getIfaceHandle(iface_name), /*src_offset=*/0, buffer.data(), buffer.size());
+    return {status, move(buffer)};
+}
+
+std::pair<wifi_error, wifi_gscan_capabilities> WifiLegacyHal::getGscanCapabilities(
+        const std::string& iface_name) {
+    wifi_gscan_capabilities caps;
+    wifi_error status =
+            global_func_table_.wifi_get_gscan_capabilities(getIfaceHandle(iface_name), &caps);
+    return {status, caps};
+}
+
+wifi_error WifiLegacyHal::startGscan(
+        const std::string& iface_name, wifi_request_id id, const wifi_scan_cmd_params& params,
+        const std::function<void(wifi_request_id)>& on_failure_user_callback,
+        const on_gscan_results_callback& on_results_user_callback,
+        const on_gscan_full_result_callback& on_full_result_user_callback) {
+    // If there is already an ongoing background scan, reject new scan requests.
+    if (on_gscan_event_internal_callback || on_gscan_full_result_internal_callback) {
+        return WIFI_ERROR_NOT_AVAILABLE;
+    }
+
+    // This callback will be used to either trigger |on_results_user_callback|
+    // or |on_failure_user_callback|.
+    on_gscan_event_internal_callback = [iface_name, on_failure_user_callback,
+                                        on_results_user_callback,
+                                        this](wifi_request_id id, wifi_scan_event event) {
+        switch (event) {
+            case WIFI_SCAN_RESULTS_AVAILABLE:
+            case WIFI_SCAN_THRESHOLD_NUM_SCANS:
+            case WIFI_SCAN_THRESHOLD_PERCENT: {
+                wifi_error status;
+                std::vector<wifi_cached_scan_results> cached_scan_results;
+                std::tie(status, cached_scan_results) = getGscanCachedResults(iface_name);
+                if (status == WIFI_SUCCESS) {
+                    on_results_user_callback(id, cached_scan_results);
+                    return;
+                }
+                FALLTHROUGH_INTENDED;
+            }
+            // Fall through if failed. Failure to retrieve cached scan
+            // results should trigger a background scan failure.
+            case WIFI_SCAN_FAILED:
+                on_failure_user_callback(id);
+                on_gscan_event_internal_callback = nullptr;
+                on_gscan_full_result_internal_callback = nullptr;
+                return;
+        }
+        LOG(FATAL) << "Unexpected gscan event received: " << event;
+    };
+
+    on_gscan_full_result_internal_callback = [on_full_result_user_callback](
+                                                     wifi_request_id id, wifi_scan_result* result,
+                                                     uint32_t buckets_scanned) {
+        if (result) {
+            on_full_result_user_callback(id, result, buckets_scanned);
+        }
+    };
+
+    wifi_scan_result_handler handler = {onAsyncGscanFullResult, onAsyncGscanEvent};
+    wifi_error status =
+            global_func_table_.wifi_start_gscan(id, getIfaceHandle(iface_name), params, handler);
+    if (status != WIFI_SUCCESS) {
+        on_gscan_event_internal_callback = nullptr;
+        on_gscan_full_result_internal_callback = nullptr;
+    }
+    return status;
+}
+
+wifi_error WifiLegacyHal::stopGscan(const std::string& iface_name, wifi_request_id id) {
+    // If there is no an ongoing background scan, reject stop requests.
+    // TODO(b/32337212): This needs to be handled by the HIDL object because we
+    // need to return the NOT_STARTED error code.
+    if (!on_gscan_event_internal_callback && !on_gscan_full_result_internal_callback) {
+        return WIFI_ERROR_NOT_AVAILABLE;
+    }
+    wifi_error status = global_func_table_.wifi_stop_gscan(id, getIfaceHandle(iface_name));
+    // If the request Id is wrong, don't stop the ongoing background scan. Any
+    // other error should be treated as the end of background scan.
+    if (status != WIFI_ERROR_INVALID_REQUEST_ID) {
+        on_gscan_event_internal_callback = nullptr;
+        on_gscan_full_result_internal_callback = nullptr;
+    }
+    return status;
+}
+
+std::pair<wifi_error, std::vector<uint32_t>> WifiLegacyHal::getValidFrequenciesForBand(
+        const std::string& iface_name, wifi_band band) {
+    static_assert(sizeof(uint32_t) >= sizeof(wifi_channel),
+                  "Wifi Channel cannot be represented in output");
+    std::vector<uint32_t> freqs;
+    freqs.resize(kMaxGscanFrequenciesForBand);
+    int32_t num_freqs = 0;
+    wifi_error status = global_func_table_.wifi_get_valid_channels(
+            getIfaceHandle(iface_name), band, freqs.size(),
+            reinterpret_cast<wifi_channel*>(freqs.data()), &num_freqs);
+    CHECK(num_freqs >= 0 && static_cast<uint32_t>(num_freqs) <= kMaxGscanFrequenciesForBand);
+    freqs.resize(num_freqs);
+    return {status, std::move(freqs)};
+}
+
+wifi_error WifiLegacyHal::setDfsFlag(const std::string& iface_name, bool dfs_on) {
+    return global_func_table_.wifi_set_nodfs_flag(getIfaceHandle(iface_name), dfs_on ? 0 : 1);
+}
+
+wifi_error WifiLegacyHal::enableLinkLayerStats(const std::string& iface_name, bool debug) {
+    wifi_link_layer_params params;
+    params.mpdu_size_threshold = kLinkLayerStatsDataMpduSizeThreshold;
+    params.aggressive_statistics_gathering = debug;
+    return global_func_table_.wifi_set_link_stats(getIfaceHandle(iface_name), params);
+}
+
+wifi_error WifiLegacyHal::disableLinkLayerStats(const std::string& iface_name) {
+    // TODO: Do we care about these responses?
+    uint32_t clear_mask_rsp;
+    uint8_t stop_rsp;
+    return global_func_table_.wifi_clear_link_stats(getIfaceHandle(iface_name), 0xFFFFFFFF,
+                                                    &clear_mask_rsp, 1, &stop_rsp);
+}
+
+std::pair<wifi_error, LinkLayerStats> WifiLegacyHal::getLinkLayerStats(
+        const std::string& iface_name) {
+    LinkLayerStats link_stats{};
+    LinkLayerStats* link_stats_ptr = &link_stats;
+
+    on_link_layer_stats_result_internal_callback = [&link_stats_ptr](
+                                                           wifi_request_id /* id */,
+                                                           wifi_iface_stat* iface_stats_ptr,
+                                                           int num_radios,
+                                                           wifi_radio_stat* radio_stats_ptr) {
+        wifi_radio_stat* l_radio_stats_ptr;
+        wifi_peer_info* l_peer_info_stats_ptr;
+
+        if (iface_stats_ptr != nullptr) {
+            link_stats_ptr->iface = *iface_stats_ptr;
+            l_peer_info_stats_ptr = iface_stats_ptr->peer_info;
+            for (uint32_t i = 0; i < iface_stats_ptr->num_peers; i++) {
+                WifiPeerInfo peer;
+                peer.peer_info = *l_peer_info_stats_ptr;
+                if (l_peer_info_stats_ptr->num_rate > 0) {
+                    /* Copy the rate stats */
+                    peer.rate_stats.assign(
+                            l_peer_info_stats_ptr->rate_stats,
+                            l_peer_info_stats_ptr->rate_stats + l_peer_info_stats_ptr->num_rate);
+                }
+                peer.peer_info.num_rate = 0;
+                link_stats_ptr->peers.push_back(peer);
+                l_peer_info_stats_ptr =
+                        (wifi_peer_info*)((u8*)l_peer_info_stats_ptr + sizeof(wifi_peer_info) +
+                                          (sizeof(wifi_rate_stat) *
+                                           l_peer_info_stats_ptr->num_rate));
+            }
+            link_stats_ptr->iface.num_peers = 0;
+        } else {
+            LOG(ERROR) << "Invalid iface stats in link layer stats";
+        }
+        if (num_radios <= 0 || radio_stats_ptr == nullptr) {
+            LOG(ERROR) << "Invalid radio stats in link layer stats";
+            return;
+        }
+        l_radio_stats_ptr = radio_stats_ptr;
+        for (int i = 0; i < num_radios; i++) {
+            LinkLayerRadioStats radio;
+
+            radio.stats = *l_radio_stats_ptr;
+            // Copy over the tx level array to the separate vector.
+            if (l_radio_stats_ptr->num_tx_levels > 0 &&
+                l_radio_stats_ptr->tx_time_per_levels != nullptr) {
+                radio.tx_time_per_levels.assign(
+                        l_radio_stats_ptr->tx_time_per_levels,
+                        l_radio_stats_ptr->tx_time_per_levels + l_radio_stats_ptr->num_tx_levels);
+            }
+            radio.stats.num_tx_levels = 0;
+            radio.stats.tx_time_per_levels = nullptr;
+            /* Copy over the channel stat to separate vector */
+            if (l_radio_stats_ptr->num_channels > 0) {
+                /* Copy the channel stats */
+                radio.channel_stats.assign(
+                        l_radio_stats_ptr->channels,
+                        l_radio_stats_ptr->channels + l_radio_stats_ptr->num_channels);
+            }
+            link_stats_ptr->radios.push_back(radio);
+            l_radio_stats_ptr =
+                    (wifi_radio_stat*)((u8*)l_radio_stats_ptr + sizeof(wifi_radio_stat) +
+                                       (sizeof(wifi_channel_stat) *
+                                        l_radio_stats_ptr->num_channels));
+        }
+    };
+
+    wifi_error status = global_func_table_.wifi_get_link_stats(0, getIfaceHandle(iface_name),
+                                                               {onSyncLinkLayerStatsResult});
+    on_link_layer_stats_result_internal_callback = nullptr;
+    return {status, link_stats};
+}
+
+wifi_error WifiLegacyHal::startRssiMonitoring(
+        const std::string& iface_name, wifi_request_id id, int8_t max_rssi, int8_t min_rssi,
+        const on_rssi_threshold_breached_callback& on_threshold_breached_user_callback) {
+    if (on_rssi_threshold_breached_internal_callback) {
+        return WIFI_ERROR_NOT_AVAILABLE;
+    }
+    on_rssi_threshold_breached_internal_callback = [on_threshold_breached_user_callback](
+                                                           wifi_request_id id, uint8_t* bssid_ptr,
+                                                           int8_t rssi) {
+        if (!bssid_ptr) {
+            return;
+        }
+        std::array<uint8_t, 6> bssid_arr;
+        // |bssid_ptr| pointer is assumed to have 6 bytes for the mac
+        // address.
+        std::copy(bssid_ptr, bssid_ptr + 6, std::begin(bssid_arr));
+        on_threshold_breached_user_callback(id, bssid_arr, rssi);
+    };
+    wifi_error status = global_func_table_.wifi_start_rssi_monitoring(
+            id, getIfaceHandle(iface_name), max_rssi, min_rssi, {onAsyncRssiThresholdBreached});
+    if (status != WIFI_SUCCESS) {
+        on_rssi_threshold_breached_internal_callback = nullptr;
+    }
+    return status;
+}
+
+wifi_error WifiLegacyHal::stopRssiMonitoring(const std::string& iface_name, wifi_request_id id) {
+    if (!on_rssi_threshold_breached_internal_callback) {
+        return WIFI_ERROR_NOT_AVAILABLE;
+    }
+    wifi_error status =
+            global_func_table_.wifi_stop_rssi_monitoring(id, getIfaceHandle(iface_name));
+    // If the request Id is wrong, don't stop the ongoing rssi monitoring. Any
+    // other error should be treated as the end of background scan.
+    if (status != WIFI_ERROR_INVALID_REQUEST_ID) {
+        on_rssi_threshold_breached_internal_callback = nullptr;
+    }
+    return status;
+}
+
+std::pair<wifi_error, wifi_roaming_capabilities> WifiLegacyHal::getRoamingCapabilities(
+        const std::string& iface_name) {
+    wifi_roaming_capabilities caps;
+    wifi_error status =
+            global_func_table_.wifi_get_roaming_capabilities(getIfaceHandle(iface_name), &caps);
+    return {status, caps};
+}
+
+wifi_error WifiLegacyHal::configureRoaming(const std::string& iface_name,
+                                           const wifi_roaming_config& config) {
+    wifi_roaming_config config_internal = config;
+    return global_func_table_.wifi_configure_roaming(getIfaceHandle(iface_name), &config_internal);
+}
+
+wifi_error WifiLegacyHal::enableFirmwareRoaming(const std::string& iface_name,
+                                                fw_roaming_state_t state) {
+    return global_func_table_.wifi_enable_firmware_roaming(getIfaceHandle(iface_name), state);
+}
+
+wifi_error WifiLegacyHal::configureNdOffload(const std::string& iface_name, bool enable) {
+    return global_func_table_.wifi_configure_nd_offload(getIfaceHandle(iface_name), enable);
+}
+
+wifi_error WifiLegacyHal::startSendingOffloadedPacket(const std::string& iface_name,
+                                                      uint32_t cmd_id, uint16_t ether_type,
+                                                      const std::vector<uint8_t>& ip_packet_data,
+                                                      const std::array<uint8_t, 6>& src_address,
+                                                      const std::array<uint8_t, 6>& dst_address,
+                                                      uint32_t period_in_ms) {
+    std::vector<uint8_t> ip_packet_data_internal(ip_packet_data);
+    std::vector<uint8_t> src_address_internal(src_address.data(),
+                                              src_address.data() + src_address.size());
+    std::vector<uint8_t> dst_address_internal(dst_address.data(),
+                                              dst_address.data() + dst_address.size());
+    return global_func_table_.wifi_start_sending_offloaded_packet(
+            cmd_id, getIfaceHandle(iface_name), ether_type, ip_packet_data_internal.data(),
+            ip_packet_data_internal.size(), src_address_internal.data(),
+            dst_address_internal.data(), period_in_ms);
+}
+
+wifi_error WifiLegacyHal::stopSendingOffloadedPacket(const std::string& iface_name,
+                                                     uint32_t cmd_id) {
+    return global_func_table_.wifi_stop_sending_offloaded_packet(cmd_id,
+                                                                 getIfaceHandle(iface_name));
+}
+
+wifi_error WifiLegacyHal::selectTxPowerScenario(const std::string& iface_name,
+                                                wifi_power_scenario scenario) {
+    return global_func_table_.wifi_select_tx_power_scenario(getIfaceHandle(iface_name), scenario);
+}
+
+wifi_error WifiLegacyHal::resetTxPowerScenario(const std::string& iface_name) {
+    return global_func_table_.wifi_reset_tx_power_scenario(getIfaceHandle(iface_name));
+}
+
+wifi_error WifiLegacyHal::setLatencyMode(const std::string& iface_name, wifi_latency_mode mode) {
+    return global_func_table_.wifi_set_latency_mode(getIfaceHandle(iface_name), mode);
+}
+
+wifi_error WifiLegacyHal::setThermalMitigationMode(wifi_thermal_mode mode,
+                                                   uint32_t completion_window) {
+    return global_func_table_.wifi_set_thermal_mitigation_mode(global_handle_, mode,
+                                                               completion_window);
+}
+
+wifi_error WifiLegacyHal::setDscpToAccessCategoryMapping(uint32_t start, uint32_t end,
+                                                         uint32_t access_category) {
+    return global_func_table_.wifi_map_dscp_access_category(global_handle_, start, end,
+                                                            access_category);
+}
+
+wifi_error WifiLegacyHal::resetDscpToAccessCategoryMapping() {
+    return global_func_table_.wifi_reset_dscp_mapping(global_handle_);
+}
+
+std::pair<wifi_error, uint32_t> WifiLegacyHal::getLoggerSupportedFeatureSet(
+        const std::string& iface_name) {
+    uint32_t supported_feature_flags = 0;
+    wifi_error status = WIFI_SUCCESS;
+
+    wifi_interface_handle iface_handle = getIfaceHandle(iface_name);
+
+    if (iface_handle) {
+        status = global_func_table_.wifi_get_logger_supported_feature_set(iface_handle,
+                                                                          &supported_feature_flags);
+    }
+    return {status, supported_feature_flags};
+}
+
+wifi_error WifiLegacyHal::startPktFateMonitoring(const std::string& iface_name) {
+    return global_func_table_.wifi_start_pkt_fate_monitoring(getIfaceHandle(iface_name));
+}
+
+std::pair<wifi_error, std::vector<wifi_tx_report>> WifiLegacyHal::getTxPktFates(
+        const std::string& iface_name) {
+    std::vector<wifi_tx_report> tx_pkt_fates;
+    tx_pkt_fates.resize(MAX_FATE_LOG_LEN);
+    size_t num_fates = 0;
+    wifi_error status = global_func_table_.wifi_get_tx_pkt_fates(
+            getIfaceHandle(iface_name), tx_pkt_fates.data(), tx_pkt_fates.size(), &num_fates);
+    CHECK(num_fates <= MAX_FATE_LOG_LEN);
+    tx_pkt_fates.resize(num_fates);
+    return {status, std::move(tx_pkt_fates)};
+}
+
+std::pair<wifi_error, std::vector<wifi_rx_report>> WifiLegacyHal::getRxPktFates(
+        const std::string& iface_name) {
+    std::vector<wifi_rx_report> rx_pkt_fates;
+    rx_pkt_fates.resize(MAX_FATE_LOG_LEN);
+    size_t num_fates = 0;
+    wifi_error status = global_func_table_.wifi_get_rx_pkt_fates(
+            getIfaceHandle(iface_name), rx_pkt_fates.data(), rx_pkt_fates.size(), &num_fates);
+    CHECK(num_fates <= MAX_FATE_LOG_LEN);
+    rx_pkt_fates.resize(num_fates);
+    return {status, std::move(rx_pkt_fates)};
+}
+
+std::pair<wifi_error, WakeReasonStats> WifiLegacyHal::getWakeReasonStats(
+        const std::string& iface_name) {
+    WakeReasonStats stats;
+    stats.cmd_event_wake_cnt.resize(kMaxWakeReasonStatsArraySize);
+    stats.driver_fw_local_wake_cnt.resize(kMaxWakeReasonStatsArraySize);
+
+    // This legacy struct needs separate memory to store the variable sized wake
+    // reason types.
+    stats.wake_reason_cnt.cmd_event_wake_cnt =
+            reinterpret_cast<int32_t*>(stats.cmd_event_wake_cnt.data());
+    stats.wake_reason_cnt.cmd_event_wake_cnt_sz = stats.cmd_event_wake_cnt.size();
+    stats.wake_reason_cnt.cmd_event_wake_cnt_used = 0;
+    stats.wake_reason_cnt.driver_fw_local_wake_cnt =
+            reinterpret_cast<int32_t*>(stats.driver_fw_local_wake_cnt.data());
+    stats.wake_reason_cnt.driver_fw_local_wake_cnt_sz = stats.driver_fw_local_wake_cnt.size();
+    stats.wake_reason_cnt.driver_fw_local_wake_cnt_used = 0;
+
+    wifi_error status = global_func_table_.wifi_get_wake_reason_stats(getIfaceHandle(iface_name),
+                                                                      &stats.wake_reason_cnt);
+
+    CHECK(stats.wake_reason_cnt.cmd_event_wake_cnt_used >= 0 &&
+          static_cast<uint32_t>(stats.wake_reason_cnt.cmd_event_wake_cnt_used) <=
+                  kMaxWakeReasonStatsArraySize);
+    stats.cmd_event_wake_cnt.resize(stats.wake_reason_cnt.cmd_event_wake_cnt_used);
+    stats.wake_reason_cnt.cmd_event_wake_cnt = nullptr;
+
+    CHECK(stats.wake_reason_cnt.driver_fw_local_wake_cnt_used >= 0 &&
+          static_cast<uint32_t>(stats.wake_reason_cnt.driver_fw_local_wake_cnt_used) <=
+                  kMaxWakeReasonStatsArraySize);
+    stats.driver_fw_local_wake_cnt.resize(stats.wake_reason_cnt.driver_fw_local_wake_cnt_used);
+    stats.wake_reason_cnt.driver_fw_local_wake_cnt = nullptr;
+
+    return {status, stats};
+}
+
+wifi_error WifiLegacyHal::registerRingBufferCallbackHandler(
+        const std::string& iface_name, const on_ring_buffer_data_callback& on_user_data_callback) {
+    if (on_ring_buffer_data_internal_callback) {
+        return WIFI_ERROR_NOT_AVAILABLE;
+    }
+    on_ring_buffer_data_internal_callback = [on_user_data_callback](
+                                                    char* ring_name, char* buffer, int buffer_size,
+                                                    wifi_ring_buffer_status* status) {
+        if (status && buffer) {
+            std::vector<uint8_t> buffer_vector(reinterpret_cast<uint8_t*>(buffer),
+                                               reinterpret_cast<uint8_t*>(buffer) + buffer_size);
+            on_user_data_callback(ring_name, buffer_vector, *status);
+        }
+    };
+    wifi_error status = global_func_table_.wifi_set_log_handler(0, getIfaceHandle(iface_name),
+                                                                {onAsyncRingBufferData});
+    if (status != WIFI_SUCCESS) {
+        on_ring_buffer_data_internal_callback = nullptr;
+    }
+    return status;
+}
+
+wifi_error WifiLegacyHal::deregisterRingBufferCallbackHandler(const std::string& iface_name) {
+    if (!on_ring_buffer_data_internal_callback) {
+        return WIFI_ERROR_NOT_AVAILABLE;
+    }
+    on_ring_buffer_data_internal_callback = nullptr;
+    return global_func_table_.wifi_reset_log_handler(0, getIfaceHandle(iface_name));
+}
+
+std::pair<wifi_error, std::vector<wifi_ring_buffer_status>> WifiLegacyHal::getRingBuffersStatus(
+        const std::string& iface_name) {
+    std::vector<wifi_ring_buffer_status> ring_buffers_status;
+    ring_buffers_status.resize(kMaxRingBuffers);
+    uint32_t num_rings = kMaxRingBuffers;
+    wifi_error status = global_func_table_.wifi_get_ring_buffers_status(
+            getIfaceHandle(iface_name), &num_rings, ring_buffers_status.data());
+    CHECK(num_rings <= kMaxRingBuffers);
+    ring_buffers_status.resize(num_rings);
+    return {status, std::move(ring_buffers_status)};
+}
+
+wifi_error WifiLegacyHal::startRingBufferLogging(const std::string& iface_name,
+                                                 const std::string& ring_name,
+                                                 uint32_t verbose_level, uint32_t max_interval_sec,
+                                                 uint32_t min_data_size) {
+    return global_func_table_.wifi_start_logging(getIfaceHandle(iface_name), verbose_level, 0,
+                                                 max_interval_sec, min_data_size,
+                                                 makeCharVec(ring_name).data());
+}
+
+wifi_error WifiLegacyHal::getRingBufferData(const std::string& iface_name,
+                                            const std::string& ring_name) {
+    return global_func_table_.wifi_get_ring_data(getIfaceHandle(iface_name),
+                                                 makeCharVec(ring_name).data());
+}
+
+wifi_error WifiLegacyHal::registerErrorAlertCallbackHandler(
+        const std::string& iface_name, const on_error_alert_callback& on_user_alert_callback) {
+    if (on_error_alert_internal_callback) {
+        return WIFI_ERROR_NOT_AVAILABLE;
+    }
+    on_error_alert_internal_callback = [on_user_alert_callback](wifi_request_id id, char* buffer,
+                                                                int buffer_size, int err_code) {
+        if (buffer) {
+            CHECK(id == 0);
+            on_user_alert_callback(
+                    err_code,
+                    std::vector<uint8_t>(reinterpret_cast<uint8_t*>(buffer),
+                                         reinterpret_cast<uint8_t*>(buffer) + buffer_size));
+        }
+    };
+    wifi_error status = global_func_table_.wifi_set_alert_handler(0, getIfaceHandle(iface_name),
+                                                                  {onAsyncErrorAlert});
+    if (status != WIFI_SUCCESS) {
+        on_error_alert_internal_callback = nullptr;
+    }
+    return status;
+}
+
+wifi_error WifiLegacyHal::deregisterErrorAlertCallbackHandler(const std::string& iface_name) {
+    if (!on_error_alert_internal_callback) {
+        return WIFI_ERROR_NOT_AVAILABLE;
+    }
+    on_error_alert_internal_callback = nullptr;
+    return global_func_table_.wifi_reset_alert_handler(0, getIfaceHandle(iface_name));
+}
+
+wifi_error WifiLegacyHal::registerRadioModeChangeCallbackHandler(
+        const std::string& iface_name,
+        const on_radio_mode_change_callback& on_user_change_callback) {
+    if (on_radio_mode_change_internal_callback) {
+        return WIFI_ERROR_NOT_AVAILABLE;
+    }
+    on_radio_mode_change_internal_callback = [on_user_change_callback](
+                                                     wifi_request_id /* id */, uint32_t num_macs,
+                                                     wifi_mac_info* mac_infos_arr) {
+        if (num_macs > 0 && mac_infos_arr) {
+            std::vector<WifiMacInfo> mac_infos_vec;
+            for (uint32_t i = 0; i < num_macs; i++) {
+                WifiMacInfo mac_info;
+                mac_info.wlan_mac_id = mac_infos_arr[i].wlan_mac_id;
+                mac_info.mac_band = mac_infos_arr[i].mac_band;
+                for (int32_t j = 0; j < mac_infos_arr[i].num_iface; j++) {
+                    WifiIfaceInfo iface_info;
+                    iface_info.name = mac_infos_arr[i].iface_info[j].iface_name;
+                    iface_info.channel = mac_infos_arr[i].iface_info[j].channel;
+                    mac_info.iface_infos.push_back(iface_info);
+                }
+                mac_infos_vec.push_back(mac_info);
+            }
+            on_user_change_callback(mac_infos_vec);
+        }
+    };
+    wifi_error status = global_func_table_.wifi_set_radio_mode_change_handler(
+            0, getIfaceHandle(iface_name), {onAsyncRadioModeChange});
+    if (status != WIFI_SUCCESS) {
+        on_radio_mode_change_internal_callback = nullptr;
+    }
+    return status;
+}
+
+wifi_error WifiLegacyHal::registerSubsystemRestartCallbackHandler(
+        const on_subsystem_restart_callback& on_restart_callback) {
+    if (on_subsystem_restart_internal_callback) {
+        return WIFI_ERROR_NOT_AVAILABLE;
+    }
+    on_subsystem_restart_internal_callback = [on_restart_callback](const char* error) {
+        on_restart_callback(error);
+    };
+    wifi_error status = global_func_table_.wifi_set_subsystem_restart_handler(
+            global_handle_, {onAsyncSubsystemRestart});
+    if (status != WIFI_SUCCESS) {
+        on_subsystem_restart_internal_callback = nullptr;
+    }
+    return status;
+}
+
+wifi_error WifiLegacyHal::startRttRangeRequest(
+        const std::string& iface_name, wifi_request_id id,
+        const std::vector<wifi_rtt_config>& rtt_configs,
+        const on_rtt_results_callback& on_results_user_callback) {
+    if (on_rtt_results_internal_callback) {
+        return WIFI_ERROR_NOT_AVAILABLE;
+    }
+
+    on_rtt_results_internal_callback = [on_results_user_callback](wifi_request_id id,
+                                                                  unsigned num_results,
+                                                                  wifi_rtt_result* rtt_results[]) {
+        if (num_results > 0 && !rtt_results) {
+            LOG(ERROR) << "Unexpected nullptr in RTT results";
+            return;
+        }
+        std::vector<const wifi_rtt_result*> rtt_results_vec;
+        std::copy_if(rtt_results, rtt_results + num_results, back_inserter(rtt_results_vec),
+                     [](wifi_rtt_result* rtt_result) { return rtt_result != nullptr; });
+        on_results_user_callback(id, rtt_results_vec);
+    };
+
+    std::vector<wifi_rtt_config> rtt_configs_internal(rtt_configs);
+    wifi_error status = global_func_table_.wifi_rtt_range_request(
+            id, getIfaceHandle(iface_name), rtt_configs.size(), rtt_configs_internal.data(),
+            {onAsyncRttResults});
+    if (status != WIFI_SUCCESS) {
+        on_rtt_results_internal_callback = nullptr;
+    }
+    return status;
+}
+
+wifi_error WifiLegacyHal::cancelRttRangeRequest(
+        const std::string& iface_name, wifi_request_id id,
+        const std::vector<std::array<uint8_t, 6>>& mac_addrs) {
+    if (!on_rtt_results_internal_callback) {
+        return WIFI_ERROR_NOT_AVAILABLE;
+    }
+    static_assert(sizeof(mac_addr) == sizeof(std::array<uint8_t, 6>), "MAC address size mismatch");
+    // TODO: How do we handle partial cancels (i.e only a subset of enabled mac
+    // addressed are cancelled).
+    std::vector<std::array<uint8_t, 6>> mac_addrs_internal(mac_addrs);
+    wifi_error status = global_func_table_.wifi_rtt_range_cancel(
+            id, getIfaceHandle(iface_name), mac_addrs.size(),
+            reinterpret_cast<mac_addr*>(mac_addrs_internal.data()));
+    // If the request Id is wrong, don't stop the ongoing range request. Any
+    // other error should be treated as the end of rtt ranging.
+    if (status != WIFI_ERROR_INVALID_REQUEST_ID) {
+        on_rtt_results_internal_callback = nullptr;
+    }
+    return status;
+}
+
+std::pair<wifi_error, wifi_rtt_capabilities> WifiLegacyHal::getRttCapabilities(
+        const std::string& iface_name) {
+    wifi_rtt_capabilities rtt_caps;
+    wifi_error status =
+            global_func_table_.wifi_get_rtt_capabilities(getIfaceHandle(iface_name), &rtt_caps);
+    return {status, rtt_caps};
+}
+
+std::pair<wifi_error, wifi_rtt_responder> WifiLegacyHal::getRttResponderInfo(
+        const std::string& iface_name) {
+    wifi_rtt_responder rtt_responder;
+    wifi_error status = global_func_table_.wifi_rtt_get_responder_info(getIfaceHandle(iface_name),
+                                                                       &rtt_responder);
+    return {status, rtt_responder};
+}
+
+wifi_error WifiLegacyHal::enableRttResponder(const std::string& iface_name, wifi_request_id id,
+                                             const wifi_channel_info& channel_hint,
+                                             uint32_t max_duration_secs,
+                                             const wifi_rtt_responder& info) {
+    wifi_rtt_responder info_internal(info);
+    return global_func_table_.wifi_enable_responder(id, getIfaceHandle(iface_name), channel_hint,
+                                                    max_duration_secs, &info_internal);
+}
+
+wifi_error WifiLegacyHal::disableRttResponder(const std::string& iface_name, wifi_request_id id) {
+    return global_func_table_.wifi_disable_responder(id, getIfaceHandle(iface_name));
+}
+
+wifi_error WifiLegacyHal::setRttLci(const std::string& iface_name, wifi_request_id id,
+                                    const wifi_lci_information& info) {
+    wifi_lci_information info_internal(info);
+    return global_func_table_.wifi_set_lci(id, getIfaceHandle(iface_name), &info_internal);
+}
+
+wifi_error WifiLegacyHal::setRttLcr(const std::string& iface_name, wifi_request_id id,
+                                    const wifi_lcr_information& info) {
+    wifi_lcr_information info_internal(info);
+    return global_func_table_.wifi_set_lcr(id, getIfaceHandle(iface_name), &info_internal);
+}
+
+wifi_error WifiLegacyHal::nanRegisterCallbackHandlers(const std::string& iface_name,
+                                                      const NanCallbackHandlers& user_callbacks) {
+    on_nan_notify_response_user_callback = user_callbacks.on_notify_response;
+    on_nan_event_publish_terminated_user_callback = user_callbacks.on_event_publish_terminated;
+    on_nan_event_match_user_callback = user_callbacks.on_event_match;
+    on_nan_event_match_expired_user_callback = user_callbacks.on_event_match_expired;
+    on_nan_event_subscribe_terminated_user_callback = user_callbacks.on_event_subscribe_terminated;
+    on_nan_event_followup_user_callback = user_callbacks.on_event_followup;
+    on_nan_event_disc_eng_event_user_callback = user_callbacks.on_event_disc_eng_event;
+    on_nan_event_disabled_user_callback = user_callbacks.on_event_disabled;
+    on_nan_event_tca_user_callback = user_callbacks.on_event_tca;
+    on_nan_event_beacon_sdf_payload_user_callback = user_callbacks.on_event_beacon_sdf_payload;
+    on_nan_event_data_path_request_user_callback = user_callbacks.on_event_data_path_request;
+    on_nan_event_data_path_confirm_user_callback = user_callbacks.on_event_data_path_confirm;
+    on_nan_event_data_path_end_user_callback = user_callbacks.on_event_data_path_end;
+    on_nan_event_transmit_follow_up_user_callback = user_callbacks.on_event_transmit_follow_up;
+    on_nan_event_range_request_user_callback = user_callbacks.on_event_range_request;
+    on_nan_event_range_report_user_callback = user_callbacks.on_event_range_report;
+    on_nan_event_schedule_update_user_callback = user_callbacks.on_event_schedule_update;
+
+    return global_func_table_.wifi_nan_register_handler(
+            getIfaceHandle(iface_name),
+            {onAysncNanNotifyResponse, onAysncNanEventPublishReplied,
+             onAysncNanEventPublishTerminated, onAysncNanEventMatch, onAysncNanEventMatchExpired,
+             onAysncNanEventSubscribeTerminated, onAysncNanEventFollowup,
+             onAysncNanEventDiscEngEvent, onAysncNanEventDisabled, onAysncNanEventTca,
+             onAysncNanEventBeaconSdfPayload, onAysncNanEventDataPathRequest,
+             onAysncNanEventDataPathConfirm, onAysncNanEventDataPathEnd,
+             onAysncNanEventTransmitFollowUp, onAysncNanEventRangeRequest,
+             onAysncNanEventRangeReport, onAsyncNanEventScheduleUpdate});
+}
+
+wifi_error WifiLegacyHal::nanEnableRequest(const std::string& iface_name, transaction_id id,
+                                           const NanEnableRequest& msg) {
+    NanEnableRequest msg_internal(msg);
+    return global_func_table_.wifi_nan_enable_request(id, getIfaceHandle(iface_name),
+                                                      &msg_internal);
+}
+
+wifi_error WifiLegacyHal::nanDisableRequest(const std::string& iface_name, transaction_id id) {
+    return global_func_table_.wifi_nan_disable_request(id, getIfaceHandle(iface_name));
+}
+
+wifi_error WifiLegacyHal::nanPublishRequest(const std::string& iface_name, transaction_id id,
+                                            const NanPublishRequest& msg) {
+    NanPublishRequest msg_internal(msg);
+    return global_func_table_.wifi_nan_publish_request(id, getIfaceHandle(iface_name),
+                                                       &msg_internal);
+}
+
+wifi_error WifiLegacyHal::nanPublishCancelRequest(const std::string& iface_name, transaction_id id,
+                                                  const NanPublishCancelRequest& msg) {
+    NanPublishCancelRequest msg_internal(msg);
+    return global_func_table_.wifi_nan_publish_cancel_request(id, getIfaceHandle(iface_name),
+                                                              &msg_internal);
+}
+
+wifi_error WifiLegacyHal::nanSubscribeRequest(const std::string& iface_name, transaction_id id,
+                                              const NanSubscribeRequest& msg) {
+    NanSubscribeRequest msg_internal(msg);
+    return global_func_table_.wifi_nan_subscribe_request(id, getIfaceHandle(iface_name),
+                                                         &msg_internal);
+}
+
+wifi_error WifiLegacyHal::nanSubscribeCancelRequest(const std::string& iface_name,
+                                                    transaction_id id,
+                                                    const NanSubscribeCancelRequest& msg) {
+    NanSubscribeCancelRequest msg_internal(msg);
+    return global_func_table_.wifi_nan_subscribe_cancel_request(id, getIfaceHandle(iface_name),
+                                                                &msg_internal);
+}
+
+wifi_error WifiLegacyHal::nanTransmitFollowupRequest(const std::string& iface_name,
+                                                     transaction_id id,
+                                                     const NanTransmitFollowupRequest& msg) {
+    NanTransmitFollowupRequest msg_internal(msg);
+    return global_func_table_.wifi_nan_transmit_followup_request(id, getIfaceHandle(iface_name),
+                                                                 &msg_internal);
+}
+
+wifi_error WifiLegacyHal::nanStatsRequest(const std::string& iface_name, transaction_id id,
+                                          const NanStatsRequest& msg) {
+    NanStatsRequest msg_internal(msg);
+    return global_func_table_.wifi_nan_stats_request(id, getIfaceHandle(iface_name), &msg_internal);
+}
+
+wifi_error WifiLegacyHal::nanConfigRequest(const std::string& iface_name, transaction_id id,
+                                           const NanConfigRequest& msg) {
+    NanConfigRequest msg_internal(msg);
+    return global_func_table_.wifi_nan_config_request(id, getIfaceHandle(iface_name),
+                                                      &msg_internal);
+}
+
+wifi_error WifiLegacyHal::nanTcaRequest(const std::string& iface_name, transaction_id id,
+                                        const NanTCARequest& msg) {
+    NanTCARequest msg_internal(msg);
+    return global_func_table_.wifi_nan_tca_request(id, getIfaceHandle(iface_name), &msg_internal);
+}
+
+wifi_error WifiLegacyHal::nanBeaconSdfPayloadRequest(const std::string& iface_name,
+                                                     transaction_id id,
+                                                     const NanBeaconSdfPayloadRequest& msg) {
+    NanBeaconSdfPayloadRequest msg_internal(msg);
+    return global_func_table_.wifi_nan_beacon_sdf_payload_request(id, getIfaceHandle(iface_name),
+                                                                  &msg_internal);
+}
+
+std::pair<wifi_error, NanVersion> WifiLegacyHal::nanGetVersion() {
+    NanVersion version;
+    wifi_error status = global_func_table_.wifi_nan_get_version(global_handle_, &version);
+    return {status, version};
+}
+
+wifi_error WifiLegacyHal::nanGetCapabilities(const std::string& iface_name, transaction_id id) {
+    return global_func_table_.wifi_nan_get_capabilities(id, getIfaceHandle(iface_name));
+}
+
+wifi_error WifiLegacyHal::nanDataInterfaceCreate(const std::string& iface_name, transaction_id id,
+                                                 const std::string& data_iface_name) {
+    return global_func_table_.wifi_nan_data_interface_create(id, getIfaceHandle(iface_name),
+                                                             makeCharVec(data_iface_name).data());
+}
+
+wifi_error WifiLegacyHal::nanDataInterfaceDelete(const std::string& iface_name, transaction_id id,
+                                                 const std::string& data_iface_name) {
+    return global_func_table_.wifi_nan_data_interface_delete(id, getIfaceHandle(iface_name),
+                                                             makeCharVec(data_iface_name).data());
+}
+
+wifi_error WifiLegacyHal::nanDataRequestInitiator(const std::string& iface_name, transaction_id id,
+                                                  const NanDataPathInitiatorRequest& msg) {
+    NanDataPathInitiatorRequest msg_internal(msg);
+    return global_func_table_.wifi_nan_data_request_initiator(id, getIfaceHandle(iface_name),
+                                                              &msg_internal);
+}
+
+wifi_error WifiLegacyHal::nanDataIndicationResponse(const std::string& iface_name,
+                                                    transaction_id id,
+                                                    const NanDataPathIndicationResponse& msg) {
+    NanDataPathIndicationResponse msg_internal(msg);
+    return global_func_table_.wifi_nan_data_indication_response(id, getIfaceHandle(iface_name),
+                                                                &msg_internal);
+}
+
+typedef struct {
+    u8 num_ndp_instances;
+    NanDataPathId ndp_instance_id;
+} NanDataPathEndSingleNdpIdRequest;
+
+wifi_error WifiLegacyHal::nanDataEnd(const std::string& iface_name, transaction_id id,
+                                     uint32_t ndpInstanceId) {
+    NanDataPathEndSingleNdpIdRequest msg;
+    msg.num_ndp_instances = 1;
+    msg.ndp_instance_id = ndpInstanceId;
+    wifi_error status = global_func_table_.wifi_nan_data_end(id, getIfaceHandle(iface_name),
+                                                             (NanDataPathEndRequest*)&msg);
+    return status;
+}
+
+wifi_error WifiLegacyHal::setCountryCode(const std::string& iface_name,
+                                         std::array<int8_t, 2> code) {
+    std::string code_str(code.data(), code.data() + code.size());
+    return global_func_table_.wifi_set_country_code(getIfaceHandle(iface_name), code_str.c_str());
+}
+
+wifi_error WifiLegacyHal::retrieveIfaceHandles() {
+    wifi_interface_handle* iface_handles = nullptr;
+    int num_iface_handles = 0;
+    wifi_error status =
+            global_func_table_.wifi_get_ifaces(global_handle_, &num_iface_handles, &iface_handles);
+    if (status != WIFI_SUCCESS) {
+        LOG(ERROR) << "Failed to enumerate interface handles";
+        return status;
+    }
+    iface_name_to_handle_.clear();
+    for (int i = 0; i < num_iface_handles; ++i) {
+        std::array<char, IFNAMSIZ> iface_name_arr = {};
+        status = global_func_table_.wifi_get_iface_name(iface_handles[i], iface_name_arr.data(),
+                                                        iface_name_arr.size());
+        if (status != WIFI_SUCCESS) {
+            LOG(WARNING) << "Failed to get interface handle name";
+            continue;
+        }
+        // Assuming the interface name is null terminated since the legacy HAL
+        // API does not return a size.
+        std::string iface_name(iface_name_arr.data());
+        LOG(INFO) << "Adding interface handle for " << iface_name;
+        iface_name_to_handle_[iface_name] = iface_handles[i];
+    }
+    return WIFI_SUCCESS;
+}
+
+wifi_interface_handle WifiLegacyHal::getIfaceHandle(const std::string& iface_name) {
+    const auto iface_handle_iter = iface_name_to_handle_.find(iface_name);
+    if (iface_handle_iter == iface_name_to_handle_.end()) {
+        LOG(ERROR) << "Unknown iface name: " << iface_name;
+        return nullptr;
+    }
+    return iface_handle_iter->second;
+}
+
+void WifiLegacyHal::runEventLoop() {
+    LOG(DEBUG) << "Starting legacy HAL event loop";
+    global_func_table_.wifi_event_loop(global_handle_);
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (!awaiting_event_loop_termination_) {
+        LOG(FATAL) << "Legacy HAL event loop terminated, but HAL was not stopping";
+    }
+    LOG(DEBUG) << "Legacy HAL event loop terminated";
+    awaiting_event_loop_termination_ = false;
+    stop_wait_cv_.notify_one();
+}
+
+std::pair<wifi_error, std::vector<wifi_cached_scan_results>> WifiLegacyHal::getGscanCachedResults(
+        const std::string& iface_name) {
+    std::vector<wifi_cached_scan_results> cached_scan_results;
+    cached_scan_results.resize(kMaxCachedGscanResults);
+    int32_t num_results = 0;
+    wifi_error status = global_func_table_.wifi_get_cached_gscan_results(
+            getIfaceHandle(iface_name), true /* always flush */, cached_scan_results.size(),
+            cached_scan_results.data(), &num_results);
+    CHECK(num_results >= 0 && static_cast<uint32_t>(num_results) <= kMaxCachedGscanResults);
+    cached_scan_results.resize(num_results);
+    // Check for invalid IE lengths in these cached scan results and correct it.
+    for (auto& cached_scan_result : cached_scan_results) {
+        int num_scan_results = cached_scan_result.num_results;
+        for (int i = 0; i < num_scan_results; i++) {
+            auto& scan_result = cached_scan_result.results[i];
+            if (scan_result.ie_length > 0) {
+                LOG(DEBUG) << "Cached scan result has non-zero IE length " << scan_result.ie_length;
+                scan_result.ie_length = 0;
+            }
+        }
+    }
+    return {status, std::move(cached_scan_results)};
+}
+
+wifi_error WifiLegacyHal::createVirtualInterface(const std::string& ifname,
+                                                 wifi_interface_type iftype) {
+    // Create the interface if it doesn't exist. If interface already exist,
+    // Vendor Hal should return WIFI_SUCCESS.
+    wifi_error status = global_func_table_.wifi_virtual_interface_create(global_handle_,
+                                                                         ifname.c_str(), iftype);
+    return handleVirtualInterfaceCreateOrDeleteStatus(ifname, status);
+}
+
+wifi_error WifiLegacyHal::deleteVirtualInterface(const std::string& ifname) {
+    // Delete the interface if it was created dynamically.
+    wifi_error status =
+            global_func_table_.wifi_virtual_interface_delete(global_handle_, ifname.c_str());
+    return handleVirtualInterfaceCreateOrDeleteStatus(ifname, status);
+}
+
+wifi_error WifiLegacyHal::handleVirtualInterfaceCreateOrDeleteStatus(const std::string& ifname,
+                                                                     wifi_error status) {
+    if (status == WIFI_SUCCESS) {
+        // refresh list of handlers now.
+        status = retrieveIfaceHandles();
+    } else if (status == WIFI_ERROR_NOT_SUPPORTED) {
+        // Vendor hal does not implement this API. Such vendor implementations
+        // are expected to create / delete interface by other means.
+
+        // check if interface exists.
+        if (if_nametoindex(ifname.c_str())) {
+            status = retrieveIfaceHandles();
+        }
+    }
+    return status;
+}
+
+wifi_error WifiLegacyHal::getSupportedIfaceName(uint32_t iface_type, std::string& ifname) {
+    std::array<char, IFNAMSIZ> buffer;
+
+    wifi_error res = global_func_table_.wifi_get_supported_iface_name(
+            global_handle_, (uint32_t)iface_type, buffer.data(), buffer.size());
+    if (res == WIFI_SUCCESS) ifname = buffer.data();
+
+    return res;
+}
+
+wifi_error WifiLegacyHal::multiStaSetPrimaryConnection(const std::string& ifname) {
+    return global_func_table_.wifi_multi_sta_set_primary_connection(global_handle_,
+                                                                    getIfaceHandle(ifname));
+}
+
+wifi_error WifiLegacyHal::multiStaSetUseCase(wifi_multi_sta_use_case use_case) {
+    return global_func_table_.wifi_multi_sta_set_use_case(global_handle_, use_case);
+}
+
+wifi_error WifiLegacyHal::setCoexUnsafeChannels(
+        std::vector<wifi_coex_unsafe_channel> unsafe_channels, uint32_t restrictions) {
+    return global_func_table_.wifi_set_coex_unsafe_channels(global_handle_, unsafe_channels.size(),
+                                                            unsafe_channels.data(), restrictions);
+}
+
+wifi_error WifiLegacyHal::setVoipMode(const std::string& iface_name, wifi_voip_mode mode) {
+    return global_func_table_.wifi_set_voip_mode(getIfaceHandle(iface_name), mode);
+}
+
+wifi_error WifiLegacyHal::twtRegisterHandler(const std::string& iface_name,
+                                             const TwtCallbackHandlers& user_callbacks) {
+    on_twt_event_setup_response_callback = user_callbacks.on_setup_response;
+    on_twt_event_teardown_completion_callback = user_callbacks.on_teardown_completion;
+    on_twt_event_info_frame_received_callback = user_callbacks.on_info_frame_received;
+    on_twt_event_device_notify_callback = user_callbacks.on_device_notify;
+
+    return global_func_table_.wifi_twt_register_handler(
+            getIfaceHandle(iface_name),
+            {onAsyncTwtEventSetupResponse, onAsyncTwtEventTeardownCompletion,
+             onAsyncTwtEventInfoFrameReceived, onAsyncTwtEventDeviceNotify});
+}
+
+std::pair<wifi_error, TwtCapabilitySet> WifiLegacyHal::twtGetCapability(
+        const std::string& iface_name) {
+    TwtCapabilitySet capSet;
+    wifi_error status =
+            global_func_table_.wifi_twt_get_capability(getIfaceHandle(iface_name), &capSet);
+    return {status, capSet};
+}
+
+wifi_error WifiLegacyHal::twtSetupRequest(const std::string& iface_name,
+                                          const TwtSetupRequest& msg) {
+    TwtSetupRequest msgInternal(msg);
+    return global_func_table_.wifi_twt_setup_request(getIfaceHandle(iface_name), &msgInternal);
+}
+
+wifi_error WifiLegacyHal::twtTearDownRequest(const std::string& iface_name,
+                                             const TwtTeardownRequest& msg) {
+    TwtTeardownRequest msgInternal(msg);
+    return global_func_table_.wifi_twt_teardown_request(getIfaceHandle(iface_name), &msgInternal);
+}
+
+wifi_error WifiLegacyHal::twtInfoFrameRequest(const std::string& iface_name,
+                                              const TwtInfoFrameRequest& msg) {
+    TwtInfoFrameRequest msgInternal(msg);
+    return global_func_table_.wifi_twt_info_frame_request(getIfaceHandle(iface_name), &msgInternal);
+}
+
+std::pair<wifi_error, TwtStats> WifiLegacyHal::twtGetStats(const std::string& iface_name,
+                                                           uint8_t configId) {
+    TwtStats stats;
+    wifi_error status =
+            global_func_table_.wifi_twt_get_stats(getIfaceHandle(iface_name), configId, &stats);
+    return {status, stats};
+}
+
+wifi_error WifiLegacyHal::twtClearStats(const std::string& iface_name, uint8_t configId) {
+    return global_func_table_.wifi_twt_clear_stats(getIfaceHandle(iface_name), configId);
+}
+
+wifi_error WifiLegacyHal::setDtimConfig(const std::string& iface_name, uint32_t multiplier) {
+    return global_func_table_.wifi_set_dtim_config(getIfaceHandle(iface_name), multiplier);
+}
+
+std::pair<wifi_error, std::vector<wifi_usable_channel>> WifiLegacyHal::getUsableChannels(
+        uint32_t band_mask, uint32_t iface_mode_mask, uint32_t filter_mask) {
+    std::vector<wifi_usable_channel> channels;
+    channels.resize(kMaxWifiUsableChannels);
+    uint32_t size = 0;
+    wifi_error status = global_func_table_.wifi_get_usable_channels(
+            global_handle_, band_mask, iface_mode_mask, filter_mask, channels.size(), &size,
+            reinterpret_cast<wifi_usable_channel*>(channels.data()));
+    CHECK(size >= 0 && size <= kMaxWifiUsableChannels);
+    channels.resize(size);
+    return {status, std::move(channels)};
+}
+
+wifi_error WifiLegacyHal::triggerSubsystemRestart() {
+    return global_func_table_.wifi_trigger_subsystem_restart(global_handle_);
+}
+
+void WifiLegacyHal::invalidate() {
+    global_handle_ = nullptr;
+    iface_name_to_handle_.clear();
+    on_driver_memory_dump_internal_callback = nullptr;
+    on_firmware_memory_dump_internal_callback = nullptr;
+    on_gscan_event_internal_callback = nullptr;
+    on_gscan_full_result_internal_callback = nullptr;
+    on_link_layer_stats_result_internal_callback = nullptr;
+    on_rssi_threshold_breached_internal_callback = nullptr;
+    on_ring_buffer_data_internal_callback = nullptr;
+    on_error_alert_internal_callback = nullptr;
+    on_radio_mode_change_internal_callback = nullptr;
+    on_subsystem_restart_internal_callback = nullptr;
+    on_rtt_results_internal_callback = nullptr;
+    on_nan_notify_response_user_callback = nullptr;
+    on_nan_event_publish_terminated_user_callback = nullptr;
+    on_nan_event_match_user_callback = nullptr;
+    on_nan_event_match_expired_user_callback = nullptr;
+    on_nan_event_subscribe_terminated_user_callback = nullptr;
+    on_nan_event_followup_user_callback = nullptr;
+    on_nan_event_disc_eng_event_user_callback = nullptr;
+    on_nan_event_disabled_user_callback = nullptr;
+    on_nan_event_tca_user_callback = nullptr;
+    on_nan_event_beacon_sdf_payload_user_callback = nullptr;
+    on_nan_event_data_path_request_user_callback = nullptr;
+    on_nan_event_data_path_confirm_user_callback = nullptr;
+    on_nan_event_data_path_end_user_callback = nullptr;
+    on_nan_event_transmit_follow_up_user_callback = nullptr;
+    on_nan_event_range_request_user_callback = nullptr;
+    on_nan_event_range_report_user_callback = nullptr;
+    on_nan_event_schedule_update_user_callback = nullptr;
+    on_twt_event_setup_response_callback = nullptr;
+    on_twt_event_teardown_completion_callback = nullptr;
+    on_twt_event_info_frame_received_callback = nullptr;
+    on_twt_event_device_notify_callback = nullptr;
+}
+
+}  // namespace legacy_hal
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.6/default/wifi_legacy_hal.h b/wifi/1.6/default/wifi_legacy_hal.h
new file mode 100644
index 0000000..d87242c
--- /dev/null
+++ b/wifi/1.6/default/wifi_legacy_hal.h
@@ -0,0 +1,700 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef WIFI_LEGACY_HAL_H_
+#define WIFI_LEGACY_HAL_H_
+
+#include <condition_variable>
+#include <functional>
+#include <map>
+#include <thread>
+#include <vector>
+
+#include <hardware_legacy/wifi_hal.h>
+#include <wifi_system/interface_tool.h>
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+// This is in a separate namespace to prevent typename conflicts between
+// the legacy HAL types and the HIDL interface types.
+namespace legacy_hal {
+// Import all the types defined inside the legacy HAL header files into this
+// namespace.
+using ::frame_info;
+using ::frame_type;
+using ::FRAME_TYPE_80211_MGMT;
+using ::FRAME_TYPE_ETHERNET_II;
+using ::FRAME_TYPE_UNKNOWN;
+using ::fw_roaming_state_t;
+using ::mac_addr;
+using ::NAN_CHANNEL_24G_BAND;
+using ::NAN_CHANNEL_5G_BAND_HIGH;
+using ::NAN_CHANNEL_5G_BAND_LOW;
+using ::NAN_DISABLE_RANGE_REPORT;
+using ::NAN_DO_NOT_USE_SRF;
+using ::NAN_DP_CHANNEL_NOT_REQUESTED;
+using ::NAN_DP_CONFIG_NO_SECURITY;
+using ::NAN_DP_CONFIG_SECURITY;
+using ::NAN_DP_END;
+using ::NAN_DP_FORCE_CHANNEL_SETUP;
+using ::NAN_DP_INITIATOR_RESPONSE;
+using ::NAN_DP_INTERFACE_CREATE;
+using ::NAN_DP_INTERFACE_DELETE;
+using ::NAN_DP_REQUEST_ACCEPT;
+using ::NAN_DP_REQUEST_CHANNEL_SETUP;
+using ::NAN_DP_REQUEST_REJECT;
+using ::NAN_DP_RESPONDER_RESPONSE;
+using ::NAN_GET_CAPABILITIES;
+using ::NAN_MATCH_ALG_MATCH_CONTINUOUS;
+using ::NAN_MATCH_ALG_MATCH_NEVER;
+using ::NAN_MATCH_ALG_MATCH_ONCE;
+using ::NAN_PUBLISH_TYPE_SOLICITED;
+using ::NAN_PUBLISH_TYPE_UNSOLICITED;
+using ::NAN_PUBLISH_TYPE_UNSOLICITED_SOLICITED;
+using ::NAN_RANGING_AUTO_RESPONSE_DISABLE;
+using ::NAN_RANGING_AUTO_RESPONSE_ENABLE;
+using ::NAN_RANGING_DISABLE;
+using ::NAN_RANGING_ENABLE;
+using ::NAN_RESPONSE_BEACON_SDF_PAYLOAD;
+using ::NAN_RESPONSE_CONFIG;
+using ::NAN_RESPONSE_DISABLED;
+using ::NAN_RESPONSE_ENABLED;
+using ::NAN_RESPONSE_ERROR;
+using ::NAN_RESPONSE_PUBLISH;
+using ::NAN_RESPONSE_PUBLISH_CANCEL;
+using ::NAN_RESPONSE_STATS;
+using ::NAN_RESPONSE_SUBSCRIBE;
+using ::NAN_RESPONSE_SUBSCRIBE_CANCEL;
+using ::NAN_RESPONSE_TCA;
+using ::NAN_RESPONSE_TRANSMIT_FOLLOWUP;
+using ::NAN_SECURITY_KEY_INPUT_PASSPHRASE;
+using ::NAN_SECURITY_KEY_INPUT_PMK;
+using ::NAN_SERVICE_ACCEPT_POLICY_ALL;
+using ::NAN_SERVICE_ACCEPT_POLICY_NONE;
+using ::NAN_SRF_ATTR_BLOOM_FILTER;
+using ::NAN_SRF_ATTR_PARTIAL_MAC_ADDR;
+using ::NAN_SRF_INCLUDE_DO_NOT_RESPOND;
+using ::NAN_SRF_INCLUDE_RESPOND;
+using ::NAN_SSI_NOT_REQUIRED_IN_MATCH_IND;
+using ::NAN_SSI_REQUIRED_IN_MATCH_IND;
+using ::NAN_STATUS_ALREADY_ENABLED;
+using ::NAN_STATUS_FOLLOWUP_QUEUE_FULL;
+using ::NAN_STATUS_INTERNAL_FAILURE;
+using ::NAN_STATUS_INVALID_NDP_ID;
+using ::NAN_STATUS_INVALID_PARAM;
+using ::NAN_STATUS_INVALID_PUBLISH_SUBSCRIBE_ID;
+using ::NAN_STATUS_INVALID_REQUESTOR_INSTANCE_ID;
+using ::NAN_STATUS_NAN_NOT_ALLOWED;
+using ::NAN_STATUS_NO_OTA_ACK;
+using ::NAN_STATUS_NO_RESOURCE_AVAILABLE;
+using ::NAN_STATUS_PROTOCOL_FAILURE;
+using ::NAN_STATUS_SUCCESS;
+using ::NAN_STATUS_UNSUPPORTED_CONCURRENCY_NAN_DISABLED;
+using ::NAN_SUBSCRIBE_TYPE_ACTIVE;
+using ::NAN_SUBSCRIBE_TYPE_PASSIVE;
+using ::NAN_TRANSMIT_IN_DW;
+using ::NAN_TRANSMIT_IN_FAW;
+using ::NAN_TX_PRIORITY_HIGH;
+using ::NAN_TX_PRIORITY_NORMAL;
+using ::NAN_TX_TYPE_BROADCAST;
+using ::NAN_TX_TYPE_UNICAST;
+using ::NAN_USE_SRF;
+using ::NanBeaconSdfPayloadInd;
+using ::NanCapabilities;
+using ::NanChannelInfo;
+using ::NanConfigRequest;
+using ::NanDataPathChannelCfg;
+using ::NanDataPathConfirmInd;
+using ::NanDataPathEndInd;
+using ::NanDataPathIndicationResponse;
+using ::NanDataPathInitiatorRequest;
+using ::NanDataPathRequestInd;
+using ::NanDataPathScheduleUpdateInd;
+using ::NanDisabledInd;
+using ::NanDiscEngEventInd;
+using ::NanEnableRequest;
+using ::NanFollowupInd;
+using ::NanMatchAlg;
+using ::NanMatchExpiredInd;
+using ::NanMatchInd;
+using ::NanPublishCancelRequest;
+using ::NanPublishRequest;
+using ::NanPublishTerminatedInd;
+using ::NanPublishType;
+using ::NanRangeReportInd;
+using ::NanRangeRequestInd;
+using ::NanResponseMsg;
+using ::NanSRFType;
+using ::NanStatusType;
+using ::NanSubscribeCancelRequest;
+using ::NanSubscribeRequest;
+using ::NanSubscribeTerminatedInd;
+using ::NanSubscribeType;
+using ::NanTransmitFollowupInd;
+using ::NanTransmitFollowupRequest;
+using ::NanTxType;
+using ::ROAMING_DISABLE;
+using ::ROAMING_ENABLE;
+using ::RTT_PEER_AP;
+using ::RTT_PEER_NAN;
+using ::RTT_PEER_P2P_CLIENT;
+using ::RTT_PEER_P2P_GO;
+using ::RTT_PEER_STA;
+using ::rtt_peer_type;
+using ::RTT_STATUS_ABORTED;
+using ::RTT_STATUS_FAIL_AP_ON_DIFF_CHANNEL;
+using ::RTT_STATUS_FAIL_BUSY_TRY_LATER;
+using ::RTT_STATUS_FAIL_FTM_PARAM_OVERRIDE;
+using ::RTT_STATUS_FAIL_INVALID_TS;
+using ::RTT_STATUS_FAIL_NO_CAPABILITY;
+using ::RTT_STATUS_FAIL_NO_RSP;
+using ::RTT_STATUS_FAIL_NOT_SCHEDULED_YET;
+using ::RTT_STATUS_FAIL_PROTOCOL;
+using ::RTT_STATUS_FAIL_REJECTED;
+using ::RTT_STATUS_FAIL_SCHEDULE;
+using ::RTT_STATUS_FAIL_TM_TIMEOUT;
+using ::RTT_STATUS_FAILURE;
+using ::RTT_STATUS_INVALID_REQ;
+using ::RTT_STATUS_NAN_RANGING_CONCURRENCY_NOT_SUPPORTED;
+using ::RTT_STATUS_NAN_RANGING_PROTOCOL_FAILURE;
+using ::RTT_STATUS_NO_WIFI;
+using ::RTT_STATUS_SUCCESS;
+using ::RTT_TYPE_1_SIDED;
+using ::RTT_TYPE_2_SIDED;
+using ::RX_PKT_FATE_DRV_DROP_FILTER;
+using ::RX_PKT_FATE_DRV_DROP_INVALID;
+using ::RX_PKT_FATE_DRV_DROP_NOBUFS;
+using ::RX_PKT_FATE_DRV_DROP_OTHER;
+using ::RX_PKT_FATE_DRV_QUEUED;
+using ::RX_PKT_FATE_FW_DROP_FILTER;
+using ::RX_PKT_FATE_FW_DROP_INVALID;
+using ::RX_PKT_FATE_FW_DROP_NOBUFS;
+using ::RX_PKT_FATE_FW_DROP_OTHER;
+using ::RX_PKT_FATE_FW_QUEUED;
+using ::RX_PKT_FATE_SUCCESS;
+using ::ssid_t;
+using ::transaction_id;
+using ::TX_PKT_FATE_ACKED;
+using ::TX_PKT_FATE_DRV_DROP_INVALID;
+using ::TX_PKT_FATE_DRV_DROP_NOBUFS;
+using ::TX_PKT_FATE_DRV_DROP_OTHER;
+using ::TX_PKT_FATE_DRV_QUEUED;
+using ::TX_PKT_FATE_FW_DROP_INVALID;
+using ::TX_PKT_FATE_FW_DROP_NOBUFS;
+using ::TX_PKT_FATE_FW_DROP_OTHER;
+using ::TX_PKT_FATE_FW_QUEUED;
+using ::TX_PKT_FATE_SENT;
+using ::WIFI_AC_BE;
+using ::WIFI_AC_BK;
+using ::WIFI_AC_VI;
+using ::WIFI_AC_VO;
+using ::wifi_band;
+using ::WIFI_BAND_A;
+using ::WIFI_BAND_A_DFS;
+using ::WIFI_BAND_A_WITH_DFS;
+using ::WIFI_BAND_ABG;
+using ::WIFI_BAND_ABG_WITH_DFS;
+using ::WIFI_BAND_BG;
+using ::WIFI_BAND_UNSPECIFIED;
+using ::wifi_cached_scan_results;
+using ::WIFI_CHAN_WIDTH_10;
+using ::WIFI_CHAN_WIDTH_160;
+using ::WIFI_CHAN_WIDTH_20;
+using ::WIFI_CHAN_WIDTH_40;
+using ::WIFI_CHAN_WIDTH_5;
+using ::WIFI_CHAN_WIDTH_80;
+using ::WIFI_CHAN_WIDTH_80P80;
+using ::WIFI_CHAN_WIDTH_INVALID;
+using ::wifi_channel_info;
+using ::wifi_channel_stat;
+using ::wifi_channel_width;
+using ::wifi_coex_restriction;
+using ::wifi_coex_unsafe_channel;
+using ::WIFI_DUAL_STA_NON_TRANSIENT_UNBIASED;
+using ::WIFI_DUAL_STA_TRANSIENT_PREFER_PRIMARY;
+using ::wifi_error;
+using ::WIFI_ERROR_BUSY;
+using ::WIFI_ERROR_INVALID_ARGS;
+using ::WIFI_ERROR_INVALID_REQUEST_ID;
+using ::WIFI_ERROR_NONE;
+using ::WIFI_ERROR_NOT_AVAILABLE;
+using ::WIFI_ERROR_NOT_SUPPORTED;
+using ::WIFI_ERROR_OUT_OF_MEMORY;
+using ::WIFI_ERROR_TIMED_OUT;
+using ::WIFI_ERROR_TOO_MANY_REQUESTS;
+using ::WIFI_ERROR_UNINITIALIZED;
+using ::WIFI_ERROR_UNKNOWN;
+using ::wifi_gscan_capabilities;
+using ::wifi_hal_fn;
+using ::wifi_information_element;
+using ::WIFI_INTERFACE_IBSS;
+using ::WIFI_INTERFACE_MESH;
+using ::wifi_interface_mode;
+using ::WIFI_INTERFACE_NAN;
+using ::WIFI_INTERFACE_P2P_CLIENT;
+using ::WIFI_INTERFACE_P2P_GO;
+using ::WIFI_INTERFACE_SOFTAP;
+using ::WIFI_INTERFACE_STA;
+using ::WIFI_INTERFACE_TDLS;
+using ::wifi_interface_type;
+using ::WIFI_INTERFACE_TYPE_AP;
+using ::WIFI_INTERFACE_TYPE_NAN;
+using ::WIFI_INTERFACE_TYPE_P2P;
+using ::WIFI_INTERFACE_TYPE_STA;
+using ::WIFI_INTERFACE_UNKNOWN;
+using ::wifi_latency_mode;
+using ::WIFI_LATENCY_MODE_LOW;
+using ::WIFI_LATENCY_MODE_NORMAL;
+using ::wifi_lci_information;
+using ::wifi_lcr_information;
+using ::WIFI_LOGGER_CONNECT_EVENT_SUPPORTED;
+using ::WIFI_LOGGER_DRIVER_DUMP_SUPPORTED;
+using ::WIFI_LOGGER_MEMORY_DUMP_SUPPORTED;
+using ::WIFI_LOGGER_PACKET_FATE_SUPPORTED;
+using ::WIFI_LOGGER_POWER_EVENT_SUPPORTED;
+using ::WIFI_LOGGER_WAKE_LOCK_SUPPORTED;
+using ::WIFI_MOTION_EXPECTED;
+using ::WIFI_MOTION_NOT_EXPECTED;
+using ::wifi_motion_pattern;
+using ::WIFI_MOTION_UNKNOWN;
+using ::wifi_multi_sta_use_case;
+using ::wifi_power_scenario;
+using ::WIFI_POWER_SCENARIO_ON_BODY_CELL_OFF;
+using ::WIFI_POWER_SCENARIO_ON_BODY_CELL_ON;
+using ::WIFI_POWER_SCENARIO_ON_HEAD_CELL_OFF;
+using ::WIFI_POWER_SCENARIO_ON_HEAD_CELL_ON;
+using ::WIFI_POWER_SCENARIO_VOICE_CALL;
+using ::wifi_rate;
+using ::wifi_request_id;
+using ::wifi_ring_buffer_status;
+using ::wifi_roaming_capabilities;
+using ::wifi_roaming_config;
+using ::wifi_rtt_bw;
+using ::WIFI_RTT_BW_10;
+using ::WIFI_RTT_BW_160;
+using ::WIFI_RTT_BW_20;
+using ::WIFI_RTT_BW_40;
+using ::WIFI_RTT_BW_5;
+using ::WIFI_RTT_BW_80;
+using ::wifi_rtt_capabilities;
+using ::wifi_rtt_config;
+using ::wifi_rtt_preamble;
+using ::WIFI_RTT_PREAMBLE_HE;
+using ::WIFI_RTT_PREAMBLE_HT;
+using ::WIFI_RTT_PREAMBLE_LEGACY;
+using ::WIFI_RTT_PREAMBLE_VHT;
+using ::wifi_rtt_responder;
+using ::wifi_rtt_result;
+using ::wifi_rtt_status;
+using ::wifi_rtt_type;
+using ::wifi_rx_packet_fate;
+using ::wifi_rx_report;
+using ::wifi_scan_bucket_spec;
+using ::wifi_scan_cmd_params;
+using ::WIFI_SCAN_FLAG_INTERRUPTED;
+using ::wifi_scan_result;
+using ::WIFI_SUCCESS;
+using ::wifi_tx_packet_fate;
+using ::wifi_tx_report;
+using ::wifi_usable_channel;
+using ::WIFI_USABLE_CHANNEL_FILTER_CELLULAR_COEXISTENCE;
+using ::WIFI_USABLE_CHANNEL_FILTER_CONCURRENCY;
+using ::WLAN_MAC_2_4_BAND;
+using ::WLAN_MAC_5_0_BAND;
+using ::WLAN_MAC_60_0_BAND;
+using ::WLAN_MAC_6_0_BAND;
+
+// APF capabilities supported by the iface.
+struct PacketFilterCapabilities {
+    uint32_t version;
+    uint32_t max_len;
+};
+
+// WARNING: We don't care about the variable sized members of either
+// |wifi_iface_stat|, |wifi_radio_stat| structures. So, using the pragma
+// to escape the compiler warnings regarding this.
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wgnu-variable-sized-type-not-at-end"
+// The |wifi_radio_stat.tx_time_per_levels| stats is provided as a pointer in
+// |wifi_radio_stat| structure in the legacy HAL API. Separate that out
+// into a separate return element to avoid passing pointers around.
+struct LinkLayerRadioStats {
+    wifi_radio_stat stats;
+    std::vector<uint32_t> tx_time_per_levels;
+    std::vector<wifi_channel_stat> channel_stats;
+};
+
+struct WifiPeerInfo {
+    wifi_peer_info peer_info;
+    std::vector<wifi_rate_stat> rate_stats;
+};
+
+struct LinkLayerStats {
+    wifi_iface_stat iface;
+    std::vector<LinkLayerRadioStats> radios;
+    std::vector<WifiPeerInfo> peers;
+};
+#pragma GCC diagnostic pop
+
+// The |WLAN_DRIVER_WAKE_REASON_CNT.cmd_event_wake_cnt| and
+// |WLAN_DRIVER_WAKE_REASON_CNT.driver_fw_local_wake_cnt| stats is provided
+// as a pointer in |WLAN_DRIVER_WAKE_REASON_CNT| structure in the legacy HAL
+// API. Separate that out into a separate return elements to avoid passing
+// pointers around.
+struct WakeReasonStats {
+    WLAN_DRIVER_WAKE_REASON_CNT wake_reason_cnt;
+    std::vector<uint32_t> cmd_event_wake_cnt;
+    std::vector<uint32_t> driver_fw_local_wake_cnt;
+};
+
+// NAN response and event callbacks struct.
+struct NanCallbackHandlers {
+    // NotifyResponse invoked to notify the status of the Request.
+    std::function<void(transaction_id, const NanResponseMsg&)> on_notify_response;
+    // Various event callbacks.
+    std::function<void(const NanPublishTerminatedInd&)> on_event_publish_terminated;
+    std::function<void(const NanMatchInd&)> on_event_match;
+    std::function<void(const NanMatchExpiredInd&)> on_event_match_expired;
+    std::function<void(const NanSubscribeTerminatedInd&)> on_event_subscribe_terminated;
+    std::function<void(const NanFollowupInd&)> on_event_followup;
+    std::function<void(const NanDiscEngEventInd&)> on_event_disc_eng_event;
+    std::function<void(const NanDisabledInd&)> on_event_disabled;
+    std::function<void(const NanTCAInd&)> on_event_tca;
+    std::function<void(const NanBeaconSdfPayloadInd&)> on_event_beacon_sdf_payload;
+    std::function<void(const NanDataPathRequestInd&)> on_event_data_path_request;
+    std::function<void(const NanDataPathConfirmInd&)> on_event_data_path_confirm;
+    std::function<void(const NanDataPathEndInd&)> on_event_data_path_end;
+    std::function<void(const NanTransmitFollowupInd&)> on_event_transmit_follow_up;
+    std::function<void(const NanRangeRequestInd&)> on_event_range_request;
+    std::function<void(const NanRangeReportInd&)> on_event_range_report;
+    std::function<void(const NanDataPathScheduleUpdateInd&)> on_event_schedule_update;
+};
+
+// Full scan results contain IE info and are hence passed by reference, to
+// preserve the variable length array member |ie_data|. Callee must not retain
+// the pointer.
+using on_gscan_full_result_callback =
+        std::function<void(wifi_request_id, const wifi_scan_result*, uint32_t)>;
+// These scan results don't contain any IE info, so no need to pass by
+// reference.
+using on_gscan_results_callback =
+        std::function<void(wifi_request_id, const std::vector<wifi_cached_scan_results>&)>;
+
+// Invoked when the rssi value breaches the thresholds set.
+using on_rssi_threshold_breached_callback =
+        std::function<void(wifi_request_id, std::array<uint8_t, 6>, int8_t)>;
+
+// Callback for RTT range request results.
+// Rtt results contain IE info and are hence passed by reference, to
+// preserve the |LCI| and |LCR| pointers. Callee must not retain
+// the pointer.
+using on_rtt_results_callback =
+        std::function<void(wifi_request_id, const std::vector<const wifi_rtt_result*>&)>;
+
+// Callback for ring buffer data.
+using on_ring_buffer_data_callback = std::function<void(
+        const std::string&, const std::vector<uint8_t>&, const wifi_ring_buffer_status&)>;
+
+// Callback for alerts.
+using on_error_alert_callback = std::function<void(int32_t, const std::vector<uint8_t>&)>;
+
+// Callback for subsystem restart
+using on_subsystem_restart_callback = std::function<void(const std::string&)>;
+
+// Struct for the mac info from the legacy HAL. This is a cleaner version
+// of the |wifi_mac_info| & |wifi_iface_info|.
+typedef struct {
+    std::string name;
+    wifi_channel channel;
+} WifiIfaceInfo;
+
+typedef struct {
+    uint32_t wlan_mac_id;
+    /* BIT MASK of BIT(WLAN_MAC*) as represented by wlan_mac_band */
+    uint32_t mac_band;
+    /* Represents the connected Wi-Fi interfaces associated with each MAC */
+    std::vector<WifiIfaceInfo> iface_infos;
+} WifiMacInfo;
+
+// Callback for radio mode change
+using on_radio_mode_change_callback = std::function<void(const std::vector<WifiMacInfo>&)>;
+
+// TWT response and event callbacks struct.
+struct TwtCallbackHandlers {
+    // Callback for TWT setup response
+    std::function<void(const TwtSetupResponse&)> on_setup_response;
+    // Callback for TWT teardown completion
+    std::function<void(const TwtTeardownCompletion&)> on_teardown_completion;
+    // Callback for TWT info frame received event
+    std::function<void(const TwtInfoFrameReceived&)> on_info_frame_received;
+    // Callback for TWT notification from the device
+    std::function<void(const TwtDeviceNotify&)> on_device_notify;
+};
+
+/**
+ * Class that encapsulates all legacy HAL interactions.
+ * This class manages the lifetime of the event loop thread used by legacy HAL.
+ *
+ * Note: There will only be a single instance of this class created in the Wifi
+ * object and will be valid for the lifetime of the process.
+ */
+class WifiLegacyHal {
+  public:
+    WifiLegacyHal(const std::weak_ptr<wifi_system::InterfaceTool> iface_tool, const wifi_hal_fn& fn,
+                  bool is_primary);
+    virtual ~WifiLegacyHal() = default;
+
+    // Initialize the legacy HAL function table.
+    virtual wifi_error initialize();
+    // Start the legacy HAL and the event looper thread.
+    virtual wifi_error start();
+    // Deinitialize the legacy HAL and wait for the event loop thread to exit
+    // using a predefined timeout.
+    virtual wifi_error stop(std::unique_lock<std::recursive_mutex>* lock,
+                            const std::function<void()>& on_complete_callback);
+    virtual wifi_error waitForDriverReady();
+    // Checks if legacy HAL has successfully started
+    bool isStarted();
+    // Wrappers for all the functions in the legacy HAL function table.
+    virtual std::pair<wifi_error, std::string> getDriverVersion(const std::string& iface_name);
+    virtual std::pair<wifi_error, std::string> getFirmwareVersion(const std::string& iface_name);
+    std::pair<wifi_error, std::vector<uint8_t>> requestDriverMemoryDump(
+            const std::string& iface_name);
+    std::pair<wifi_error, std::vector<uint8_t>> requestFirmwareMemoryDump(
+            const std::string& iface_name);
+    std::pair<wifi_error, uint64_t> getSupportedFeatureSet(const std::string& iface_name);
+    // APF functions.
+    std::pair<wifi_error, PacketFilterCapabilities> getPacketFilterCapabilities(
+            const std::string& iface_name);
+    wifi_error setPacketFilter(const std::string& iface_name, const std::vector<uint8_t>& program);
+    std::pair<wifi_error, std::vector<uint8_t>> readApfPacketFilterData(
+            const std::string& iface_name);
+    // Gscan functions.
+    std::pair<wifi_error, wifi_gscan_capabilities> getGscanCapabilities(
+            const std::string& iface_name);
+    // These API's provides a simplified interface over the legacy Gscan API's:
+    // a) All scan events from the legacy HAL API other than the
+    //    |WIFI_SCAN_FAILED| are treated as notification of results.
+    //    This method then retrieves the cached scan results from the legacy
+    //    HAL API and triggers the externally provided
+    //    |on_results_user_callback| on success.
+    // b) |WIFI_SCAN_FAILED| scan event or failure to retrieve cached scan
+    // results
+    //    triggers the externally provided |on_failure_user_callback|.
+    // c) Full scan result event triggers the externally provided
+    //    |on_full_result_user_callback|.
+    wifi_error startGscan(const std::string& iface_name, wifi_request_id id,
+                          const wifi_scan_cmd_params& params,
+                          const std::function<void(wifi_request_id)>& on_failure_callback,
+                          const on_gscan_results_callback& on_results_callback,
+                          const on_gscan_full_result_callback& on_full_result_callback);
+    wifi_error stopGscan(const std::string& iface_name, wifi_request_id id);
+    std::pair<wifi_error, std::vector<uint32_t>> getValidFrequenciesForBand(
+            const std::string& iface_name, wifi_band band);
+    virtual wifi_error setDfsFlag(const std::string& iface_name, bool dfs_on);
+    // Link layer stats functions.
+    wifi_error enableLinkLayerStats(const std::string& iface_name, bool debug);
+    wifi_error disableLinkLayerStats(const std::string& iface_name);
+    std::pair<wifi_error, LinkLayerStats> getLinkLayerStats(const std::string& iface_name);
+    // RSSI monitor functions.
+    wifi_error startRssiMonitoring(
+            const std::string& iface_name, wifi_request_id id, int8_t max_rssi, int8_t min_rssi,
+            const on_rssi_threshold_breached_callback& on_threshold_breached_callback);
+    wifi_error stopRssiMonitoring(const std::string& iface_name, wifi_request_id id);
+    std::pair<wifi_error, wifi_roaming_capabilities> getRoamingCapabilities(
+            const std::string& iface_name);
+    wifi_error configureRoaming(const std::string& iface_name, const wifi_roaming_config& config);
+    wifi_error enableFirmwareRoaming(const std::string& iface_name, fw_roaming_state_t state);
+    wifi_error configureNdOffload(const std::string& iface_name, bool enable);
+    wifi_error startSendingOffloadedPacket(const std::string& iface_name, uint32_t cmd_id,
+                                           uint16_t ether_type,
+                                           const std::vector<uint8_t>& ip_packet_data,
+                                           const std::array<uint8_t, 6>& src_address,
+                                           const std::array<uint8_t, 6>& dst_address,
+                                           uint32_t period_in_ms);
+    wifi_error stopSendingOffloadedPacket(const std::string& iface_name, uint32_t cmd_id);
+    virtual wifi_error selectTxPowerScenario(const std::string& iface_name,
+                                             wifi_power_scenario scenario);
+    virtual wifi_error resetTxPowerScenario(const std::string& iface_name);
+    wifi_error setLatencyMode(const std::string& iface_name, wifi_latency_mode mode);
+    wifi_error setThermalMitigationMode(wifi_thermal_mode mode, uint32_t completion_window);
+    wifi_error setDscpToAccessCategoryMapping(uint32_t start, uint32_t end,
+                                              uint32_t access_category);
+    wifi_error resetDscpToAccessCategoryMapping();
+    // Logger/debug functions.
+    std::pair<wifi_error, uint32_t> getLoggerSupportedFeatureSet(const std::string& iface_name);
+    wifi_error startPktFateMonitoring(const std::string& iface_name);
+    std::pair<wifi_error, std::vector<wifi_tx_report>> getTxPktFates(const std::string& iface_name);
+    std::pair<wifi_error, std::vector<wifi_rx_report>> getRxPktFates(const std::string& iface_name);
+    std::pair<wifi_error, WakeReasonStats> getWakeReasonStats(const std::string& iface_name);
+    wifi_error registerRingBufferCallbackHandler(
+            const std::string& iface_name, const on_ring_buffer_data_callback& on_data_callback);
+    wifi_error deregisterRingBufferCallbackHandler(const std::string& iface_name);
+    wifi_error registerSubsystemRestartCallbackHandler(
+            const on_subsystem_restart_callback& on_restart_callback);
+    std::pair<wifi_error, std::vector<wifi_ring_buffer_status>> getRingBuffersStatus(
+            const std::string& iface_name);
+    wifi_error startRingBufferLogging(const std::string& iface_name, const std::string& ring_name,
+                                      uint32_t verbose_level, uint32_t max_interval_sec,
+                                      uint32_t min_data_size);
+    wifi_error getRingBufferData(const std::string& iface_name, const std::string& ring_name);
+    wifi_error registerErrorAlertCallbackHandler(const std::string& iface_name,
+                                                 const on_error_alert_callback& on_alert_callback);
+    wifi_error deregisterErrorAlertCallbackHandler(const std::string& iface_name);
+    // Radio mode functions.
+    virtual wifi_error registerRadioModeChangeCallbackHandler(
+            const std::string& iface_name,
+            const on_radio_mode_change_callback& on_user_change_callback);
+    // RTT functions.
+    wifi_error startRttRangeRequest(const std::string& iface_name, wifi_request_id id,
+                                    const std::vector<wifi_rtt_config>& rtt_configs,
+                                    const on_rtt_results_callback& on_results_callback);
+    wifi_error cancelRttRangeRequest(const std::string& iface_name, wifi_request_id id,
+                                     const std::vector<std::array<uint8_t, 6>>& mac_addrs);
+    std::pair<wifi_error, wifi_rtt_capabilities> getRttCapabilities(const std::string& iface_name);
+    std::pair<wifi_error, wifi_rtt_responder> getRttResponderInfo(const std::string& iface_name);
+    wifi_error enableRttResponder(const std::string& iface_name, wifi_request_id id,
+                                  const wifi_channel_info& channel_hint, uint32_t max_duration_secs,
+                                  const wifi_rtt_responder& info);
+    wifi_error disableRttResponder(const std::string& iface_name, wifi_request_id id);
+    wifi_error setRttLci(const std::string& iface_name, wifi_request_id id,
+                         const wifi_lci_information& info);
+    wifi_error setRttLcr(const std::string& iface_name, wifi_request_id id,
+                         const wifi_lcr_information& info);
+    // NAN functions.
+    virtual wifi_error nanRegisterCallbackHandlers(const std::string& iface_name,
+                                                   const NanCallbackHandlers& callbacks);
+    wifi_error nanEnableRequest(const std::string& iface_name, transaction_id id,
+                                const NanEnableRequest& msg);
+    virtual wifi_error nanDisableRequest(const std::string& iface_name, transaction_id id);
+    wifi_error nanPublishRequest(const std::string& iface_name, transaction_id id,
+                                 const NanPublishRequest& msg);
+    wifi_error nanPublishCancelRequest(const std::string& iface_name, transaction_id id,
+                                       const NanPublishCancelRequest& msg);
+    wifi_error nanSubscribeRequest(const std::string& iface_name, transaction_id id,
+                                   const NanSubscribeRequest& msg);
+    wifi_error nanSubscribeCancelRequest(const std::string& iface_name, transaction_id id,
+                                         const NanSubscribeCancelRequest& msg);
+    wifi_error nanTransmitFollowupRequest(const std::string& iface_name, transaction_id id,
+                                          const NanTransmitFollowupRequest& msg);
+    wifi_error nanStatsRequest(const std::string& iface_name, transaction_id id,
+                               const NanStatsRequest& msg);
+    wifi_error nanConfigRequest(const std::string& iface_name, transaction_id id,
+                                const NanConfigRequest& msg);
+    wifi_error nanTcaRequest(const std::string& iface_name, transaction_id id,
+                             const NanTCARequest& msg);
+    wifi_error nanBeaconSdfPayloadRequest(const std::string& iface_name, transaction_id id,
+                                          const NanBeaconSdfPayloadRequest& msg);
+    std::pair<wifi_error, NanVersion> nanGetVersion();
+    wifi_error nanGetCapabilities(const std::string& iface_name, transaction_id id);
+    wifi_error nanDataInterfaceCreate(const std::string& iface_name, transaction_id id,
+                                      const std::string& data_iface_name);
+    virtual wifi_error nanDataInterfaceDelete(const std::string& iface_name, transaction_id id,
+                                              const std::string& data_iface_name);
+    wifi_error nanDataRequestInitiator(const std::string& iface_name, transaction_id id,
+                                       const NanDataPathInitiatorRequest& msg);
+    wifi_error nanDataIndicationResponse(const std::string& iface_name, transaction_id id,
+                                         const NanDataPathIndicationResponse& msg);
+    wifi_error nanDataEnd(const std::string& iface_name, transaction_id id, uint32_t ndpInstanceId);
+    // AP functions.
+    wifi_error setCountryCode(const std::string& iface_name, std::array<int8_t, 2> code);
+
+    // interface functions.
+    virtual wifi_error createVirtualInterface(const std::string& ifname,
+                                              wifi_interface_type iftype);
+    virtual wifi_error deleteVirtualInterface(const std::string& ifname);
+    wifi_error getSupportedIfaceName(uint32_t iface_type, std::string& ifname);
+
+    // STA + STA functions
+    virtual wifi_error multiStaSetPrimaryConnection(const std::string& ifname);
+    virtual wifi_error multiStaSetUseCase(wifi_multi_sta_use_case use_case);
+
+    // Coex functions.
+    virtual wifi_error setCoexUnsafeChannels(std::vector<wifi_coex_unsafe_channel> unsafe_channels,
+                                             uint32_t restrictions);
+
+    wifi_error setVoipMode(const std::string& iface_name, wifi_voip_mode mode);
+
+    wifi_error twtRegisterHandler(const std::string& iface_name,
+                                  const TwtCallbackHandlers& handler);
+
+    std::pair<wifi_error, TwtCapabilitySet> twtGetCapability(const std::string& iface_name);
+
+    wifi_error twtSetupRequest(const std::string& iface_name, const TwtSetupRequest& msg);
+
+    wifi_error twtTearDownRequest(const std::string& iface_name, const TwtTeardownRequest& msg);
+
+    wifi_error twtInfoFrameRequest(const std::string& iface_name, const TwtInfoFrameRequest& msg);
+
+    std::pair<wifi_error, TwtStats> twtGetStats(const std::string& iface_name, uint8_t configId);
+
+    wifi_error twtClearStats(const std::string& iface_name, uint8_t configId);
+
+    wifi_error setDtimConfig(const std::string& iface_name, uint32_t multiplier);
+
+    // Retrieve the list of usable channels in the requested bands
+    // for the requested modes
+    std::pair<wifi_error, std::vector<wifi_usable_channel>> getUsableChannels(
+            uint32_t band_mask, uint32_t iface_mode_mask, uint32_t filter_mask);
+
+    wifi_error triggerSubsystemRestart();
+
+  private:
+    // Retrieve interface handles for all the available interfaces.
+    wifi_error retrieveIfaceHandles();
+    wifi_interface_handle getIfaceHandle(const std::string& iface_name);
+    // Run the legacy HAL event loop thread.
+    void runEventLoop();
+    // Retrieve the cached gscan results to pass the results back to the
+    // external callbacks.
+    std::pair<wifi_error, std::vector<wifi_cached_scan_results>> getGscanCachedResults(
+            const std::string& iface_name);
+    void invalidate();
+    // Handles wifi (error) status of Virtual interface create/delete
+    wifi_error handleVirtualInterfaceCreateOrDeleteStatus(const std::string& ifname,
+                                                          wifi_error status);
+
+    // Global function table of legacy HAL.
+    wifi_hal_fn global_func_table_;
+    // Opaque handle to be used for all global operations.
+    wifi_handle global_handle_;
+    // Map of interface name to handle that is to be used for all interface
+    // specific operations.
+    std::map<std::string, wifi_interface_handle> iface_name_to_handle_;
+    // Flag to indicate if we have initiated the cleanup of legacy HAL.
+    std::atomic<bool> awaiting_event_loop_termination_;
+    std::condition_variable_any stop_wait_cv_;
+    // Flag to indicate if the legacy HAL has been started.
+    bool is_started_;
+    std::weak_ptr<wifi_system::InterfaceTool> iface_tool_;
+    // flag to indicate if this HAL is for the primary chip. This is used
+    // in order to avoid some hard-coded behavior used with older HALs,
+    // such as bring wlan0 interface up/down on start/stop HAL.
+    // it may be removed once vendor HALs are updated.
+    bool is_primary_;
+};
+
+}  // namespace legacy_hal
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // WIFI_LEGACY_HAL_H_
diff --git a/wifi/1.6/default/wifi_legacy_hal_factory.cpp b/wifi/1.6/default/wifi_legacy_hal_factory.cpp
new file mode 100644
index 0000000..147bf4d
--- /dev/null
+++ b/wifi/1.6/default/wifi_legacy_hal_factory.cpp
@@ -0,0 +1,254 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <dirent.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include <android-base/logging.h>
+#include <dlfcn.h>
+#include <libxml/parser.h>
+#include <libxml/tree.h>
+#include <libxml/xmlmemory.h>
+
+#include "wifi_legacy_hal_factory.h"
+#include "wifi_legacy_hal_stubs.h"
+
+namespace {
+static constexpr char kVendorHalsDescPath[] = "/vendor/etc/wifi/vendor_hals";
+static constexpr char kVendorHalsDescExt[] = ".xml";
+static constexpr uint32_t kVendorHalsDescVersion = 1;
+
+bool isDirectory(struct dirent* entryPtr) {
+    bool isDir = false;
+    if (entryPtr->d_type != DT_UNKNOWN && entryPtr->d_type != DT_LNK) {
+        isDir = (entryPtr->d_type == DT_DIR);
+    } else {
+        struct stat entryStat;
+        stat(entryPtr->d_name, &entryStat);
+        isDir = S_ISDIR(entryStat.st_mode);
+    }
+    return isDir;
+}
+
+bool isFileExtension(const char* name, const char* ext) {
+    if (name == NULL) return false;
+    if (ext == NULL) return false;
+
+    size_t extLen = strlen(ext);
+    size_t nameLen = strlen(name);
+
+    if (extLen > nameLen) return false;
+
+    if (strncmp(name + nameLen - extLen, ext, extLen) != 0) return false;
+
+    return true;
+}
+};  // namespace
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+namespace legacy_hal {
+
+WifiLegacyHalFactory::WifiLegacyHalFactory(
+        const std::weak_ptr<wifi_system::InterfaceTool> iface_tool)
+    : iface_tool_(iface_tool) {}
+
+std::vector<std::shared_ptr<WifiLegacyHal>> WifiLegacyHalFactory::getHals() {
+    if (legacy_hals_.empty()) {
+        if (!initVendorHalDescriptorFromLinked()) initVendorHalsDescriptorList();
+        for (auto& desc : descs_) {
+            std::shared_ptr<WifiLegacyHal> hal =
+                    std::make_shared<WifiLegacyHal>(iface_tool_, desc.fn, desc.primary);
+            legacy_hals_.push_back(hal);
+        }
+    }
+
+    return legacy_hals_;
+}
+
+bool WifiLegacyHalFactory::initVendorHalDescriptorFromLinked() {
+    wifi_hal_lib_desc desc;
+
+    if (!initLinkedHalFunctionTable(&desc.fn)) return false;
+
+    desc.primary = true;
+    desc.handle = NULL;
+    descs_.push_back(desc);
+    return true;
+}
+
+bool WifiLegacyHalFactory::initLinkedHalFunctionTable(wifi_hal_fn* hal_fn) {
+    init_wifi_vendor_hal_func_table_t initfn;
+
+    initfn = (init_wifi_vendor_hal_func_table_t)dlsym(RTLD_DEFAULT,
+                                                      "init_wifi_vendor_hal_func_table");
+    if (!initfn) {
+        LOG(INFO) << "no vendor HAL library linked, will try dynamic load";
+        return false;
+    }
+
+    if (!initHalFuncTableWithStubs(hal_fn)) {
+        LOG(ERROR) << "Can not initialize the basic function pointer table";
+        return false;
+    }
+
+    if (initfn(hal_fn) != WIFI_SUCCESS) {
+        LOG(ERROR) << "Can not initialize the vendor function pointer table";
+        return false;
+    }
+
+    return true;
+}
+
+/*
+ * Overall structure of the HAL descriptor XML schema
+ *
+ * <?xml version="1.0" encoding="UTF-8"?>
+ * <WifiVendorHal version="1">
+ * <path>/vendor/lib64/libwifi-hal-qcom.so</path>
+ * <primary>1</primary>
+ * </WifiVendorHal>
+ */
+void WifiLegacyHalFactory::initVendorHalsDescriptorList() {
+    xmlDocPtr xml;
+    xmlNodePtr node, cnode;
+    char* version;
+    std::string path;
+    xmlChar* value;
+    wifi_hal_lib_desc desc;
+
+    LOG(INFO) << "processing vendor HALs descriptions in " << kVendorHalsDescPath;
+    DIR* dirPtr = ::opendir(kVendorHalsDescPath);
+    if (dirPtr == NULL) {
+        LOG(ERROR) << "failed to open " << kVendorHalsDescPath;
+        return;
+    }
+    for (struct dirent* entryPtr = ::readdir(dirPtr); entryPtr != NULL;
+         entryPtr = ::readdir(dirPtr)) {
+        if (isDirectory(entryPtr)) continue;
+
+        if (!isFileExtension(entryPtr->d_name, kVendorHalsDescExt))
+            continue;  // only process .xml files
+
+        LOG(INFO) << "processing config file: " << entryPtr->d_name;
+
+        std::string fullPath(kVendorHalsDescPath);
+        fullPath.append("/");
+        fullPath.append(entryPtr->d_name);
+        xml = xmlReadFile(fullPath.c_str(), "UTF-8", XML_PARSE_RECOVER);
+        if (!xml) {
+            LOG(ERROR) << "failed to parse: " << entryPtr->d_name << " skipping...";
+            continue;
+        }
+        node = xmlDocGetRootElement(xml);
+        if (!node) {
+            LOG(ERROR) << "empty config file: " << entryPtr->d_name << " skipping...";
+            goto skip;
+        }
+        if (xmlStrcmp(node->name, BAD_CAST "WifiVendorHal")) {
+            LOG(ERROR) << "bad config, root element not WifiVendorHal: " << entryPtr->d_name
+                       << " skipping...";
+            goto skip;
+        }
+        version = (char*)xmlGetProp(node, BAD_CAST "version");
+        if (!version || strtoul(version, NULL, 0) != kVendorHalsDescVersion) {
+            LOG(ERROR) << "conf file: " << entryPtr->d_name
+                       << "must have version: " << kVendorHalsDescVersion << ", skipping...";
+            goto skip;
+        }
+        cnode = node->children;
+        path.clear();
+        desc.primary = false;
+        while (cnode) {
+            if (!xmlStrcmp(cnode->name, BAD_CAST "path")) {
+                value = xmlNodeListGetString(xml, cnode->children, 1);
+                if (value) path = (char*)value;
+                xmlFree(value);
+            } else if (!xmlStrcmp(cnode->name, BAD_CAST "primary")) {
+                value = xmlNodeListGetString(xml, cnode->children, 1);
+                desc.primary = !xmlStrcmp(value, BAD_CAST "1");
+                xmlFree(value);
+            }
+            cnode = cnode->next;
+        }
+        if (path.empty()) {
+            LOG(ERROR) << "hal library path not provided in: " << entryPtr->d_name
+                       << ", skipping...";
+            goto skip;
+        }
+        if (loadVendorHalLib(path, desc)) {
+            if (desc.primary)
+                descs_.insert(descs_.begin(), desc);
+            else
+                descs_.push_back(desc);
+        }
+    skip:
+        xmlFreeDoc(xml);
+    }
+    ::closedir(dirPtr);
+}
+
+bool WifiLegacyHalFactory::loadVendorHalLib(const std::string& path, wifi_hal_lib_desc& desc) {
+    void* h = dlopen(path.c_str(), RTLD_NOW | RTLD_LOCAL);
+    init_wifi_vendor_hal_func_table_t initfn;
+    wifi_error res;
+
+    if (!h) {
+        LOG(ERROR) << "failed to open vendor hal library: " << path;
+        return false;
+    }
+    initfn = (init_wifi_vendor_hal_func_table_t)dlsym(h, "init_wifi_vendor_hal_func_table");
+    if (!initfn) {
+        LOG(ERROR) << "init_wifi_vendor_hal_func_table not found in: " << path;
+        goto out_err;
+    }
+
+    if (!initHalFuncTableWithStubs(&desc.fn)) {
+        LOG(ERROR) << "Can not initialize the basic function pointer table";
+        goto out_err;
+    }
+    res = initfn(&desc.fn);
+    if (res != WIFI_SUCCESS) {
+        LOG(ERROR) << "failed to initialize the vendor func table in: " << path
+                   << " error: " << res;
+        goto out_err;
+    }
+
+    res = desc.fn.wifi_early_initialize();
+    // vendor HALs which do not implement early_initialize will return
+    // WIFI_ERROR_NOT_SUPPORTED, treat this as success.
+    if (res != WIFI_SUCCESS && res != WIFI_ERROR_NOT_SUPPORTED) {
+        LOG(ERROR) << "early initialization failed in: " << path << " error: " << res;
+        goto out_err;
+    }
+
+    desc.handle = h;
+    return true;
+out_err:
+    dlclose(h);
+    return false;
+}
+
+}  // namespace legacy_hal
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.6/default/wifi_legacy_hal_factory.h b/wifi/1.6/default/wifi_legacy_hal_factory.h
new file mode 100644
index 0000000..9f4423e
--- /dev/null
+++ b/wifi/1.6/default/wifi_legacy_hal_factory.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef WIFI_LEGACY_HAL_FACTORY_H_
+#define WIFI_LEGACY_HAL_FACTORY_H_
+
+#include <wifi_system/interface_tool.h>
+
+#include "wifi_legacy_hal.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+// This is in a separate namespace to prevent typename conflicts between
+// the legacy HAL types and the HIDL interface types.
+namespace legacy_hal {
+/**
+ * Class that creates WifiLegacyHal objects for vendor HALs in the system.
+ */
+class WifiLegacyHalFactory {
+  public:
+    WifiLegacyHalFactory(const std::weak_ptr<wifi_system::InterfaceTool> iface_tool);
+    virtual ~WifiLegacyHalFactory() = default;
+
+    std::vector<std::shared_ptr<WifiLegacyHal>> getHals();
+
+  private:
+    typedef struct {
+        wifi_hal_fn fn;
+        bool primary;
+        void* handle;
+    } wifi_hal_lib_desc;
+
+    bool initVendorHalDescriptorFromLinked();
+    void initVendorHalsDescriptorList();
+    bool initLinkedHalFunctionTable(wifi_hal_fn* hal_fn);
+    bool loadVendorHalLib(const std::string& path, wifi_hal_lib_desc& desc);
+
+    std::weak_ptr<wifi_system::InterfaceTool> iface_tool_;
+    std::vector<wifi_hal_lib_desc> descs_;
+    std::vector<std::shared_ptr<WifiLegacyHal>> legacy_hals_;
+};
+
+}  // namespace legacy_hal
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // WIFI_LEGACY_HAL_FACTORY_H_
diff --git a/wifi/1.6/default/wifi_legacy_hal_stubs.cpp b/wifi/1.6/default/wifi_legacy_hal_stubs.cpp
new file mode 100644
index 0000000..e03e1ae
--- /dev/null
+++ b/wifi/1.6/default/wifi_legacy_hal_stubs.cpp
@@ -0,0 +1,171 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "wifi_legacy_hal_stubs.h"
+
+// TODO: Remove these stubs from HalTool in libwifi-system.
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+namespace legacy_hal {
+template <typename>
+struct stubFunction;
+
+template <typename R, typename... Args>
+struct stubFunction<R (*)(Args...)> {
+    static constexpr R invoke(Args...) { return WIFI_ERROR_NOT_SUPPORTED; }
+};
+template <typename... Args>
+struct stubFunction<void (*)(Args...)> {
+    static constexpr void invoke(Args...) {}
+};
+
+template <typename T>
+void populateStubFor(T* val) {
+    *val = &stubFunction<T>::invoke;
+}
+
+bool initHalFuncTableWithStubs(wifi_hal_fn* hal_fn) {
+    if (hal_fn == nullptr) {
+        return false;
+    }
+    populateStubFor(&hal_fn->wifi_initialize);
+    populateStubFor(&hal_fn->wifi_wait_for_driver_ready);
+    populateStubFor(&hal_fn->wifi_cleanup);
+    populateStubFor(&hal_fn->wifi_event_loop);
+    populateStubFor(&hal_fn->wifi_get_error_info);
+    populateStubFor(&hal_fn->wifi_get_supported_feature_set);
+    populateStubFor(&hal_fn->wifi_get_concurrency_matrix);
+    populateStubFor(&hal_fn->wifi_set_scanning_mac_oui);
+    populateStubFor(&hal_fn->wifi_get_supported_channels);
+    populateStubFor(&hal_fn->wifi_is_epr_supported);
+    populateStubFor(&hal_fn->wifi_get_ifaces);
+    populateStubFor(&hal_fn->wifi_get_iface_name);
+    populateStubFor(&hal_fn->wifi_set_iface_event_handler);
+    populateStubFor(&hal_fn->wifi_reset_iface_event_handler);
+    populateStubFor(&hal_fn->wifi_start_gscan);
+    populateStubFor(&hal_fn->wifi_stop_gscan);
+    populateStubFor(&hal_fn->wifi_get_cached_gscan_results);
+    populateStubFor(&hal_fn->wifi_set_bssid_hotlist);
+    populateStubFor(&hal_fn->wifi_reset_bssid_hotlist);
+    populateStubFor(&hal_fn->wifi_set_significant_change_handler);
+    populateStubFor(&hal_fn->wifi_reset_significant_change_handler);
+    populateStubFor(&hal_fn->wifi_get_gscan_capabilities);
+    populateStubFor(&hal_fn->wifi_set_link_stats);
+    populateStubFor(&hal_fn->wifi_get_link_stats);
+    populateStubFor(&hal_fn->wifi_clear_link_stats);
+    populateStubFor(&hal_fn->wifi_get_valid_channels);
+    populateStubFor(&hal_fn->wifi_rtt_range_request);
+    populateStubFor(&hal_fn->wifi_rtt_range_cancel);
+    populateStubFor(&hal_fn->wifi_get_rtt_capabilities);
+    populateStubFor(&hal_fn->wifi_rtt_get_responder_info);
+    populateStubFor(&hal_fn->wifi_enable_responder);
+    populateStubFor(&hal_fn->wifi_disable_responder);
+    populateStubFor(&hal_fn->wifi_set_nodfs_flag);
+    populateStubFor(&hal_fn->wifi_start_logging);
+    populateStubFor(&hal_fn->wifi_set_epno_list);
+    populateStubFor(&hal_fn->wifi_reset_epno_list);
+    populateStubFor(&hal_fn->wifi_set_country_code);
+    populateStubFor(&hal_fn->wifi_get_firmware_memory_dump);
+    populateStubFor(&hal_fn->wifi_set_log_handler);
+    populateStubFor(&hal_fn->wifi_reset_log_handler);
+    populateStubFor(&hal_fn->wifi_set_alert_handler);
+    populateStubFor(&hal_fn->wifi_reset_alert_handler);
+    populateStubFor(&hal_fn->wifi_get_firmware_version);
+    populateStubFor(&hal_fn->wifi_get_ring_buffers_status);
+    populateStubFor(&hal_fn->wifi_get_logger_supported_feature_set);
+    populateStubFor(&hal_fn->wifi_get_ring_data);
+    populateStubFor(&hal_fn->wifi_enable_tdls);
+    populateStubFor(&hal_fn->wifi_disable_tdls);
+    populateStubFor(&hal_fn->wifi_get_tdls_status);
+    populateStubFor(&hal_fn->wifi_get_tdls_capabilities);
+    populateStubFor(&hal_fn->wifi_get_driver_version);
+    populateStubFor(&hal_fn->wifi_set_passpoint_list);
+    populateStubFor(&hal_fn->wifi_reset_passpoint_list);
+    populateStubFor(&hal_fn->wifi_set_lci);
+    populateStubFor(&hal_fn->wifi_set_lcr);
+    populateStubFor(&hal_fn->wifi_start_sending_offloaded_packet);
+    populateStubFor(&hal_fn->wifi_stop_sending_offloaded_packet);
+    populateStubFor(&hal_fn->wifi_start_rssi_monitoring);
+    populateStubFor(&hal_fn->wifi_stop_rssi_monitoring);
+    populateStubFor(&hal_fn->wifi_get_wake_reason_stats);
+    populateStubFor(&hal_fn->wifi_configure_nd_offload);
+    populateStubFor(&hal_fn->wifi_get_driver_memory_dump);
+    populateStubFor(&hal_fn->wifi_start_pkt_fate_monitoring);
+    populateStubFor(&hal_fn->wifi_get_tx_pkt_fates);
+    populateStubFor(&hal_fn->wifi_get_rx_pkt_fates);
+    populateStubFor(&hal_fn->wifi_nan_enable_request);
+    populateStubFor(&hal_fn->wifi_nan_disable_request);
+    populateStubFor(&hal_fn->wifi_nan_publish_request);
+    populateStubFor(&hal_fn->wifi_nan_publish_cancel_request);
+    populateStubFor(&hal_fn->wifi_nan_subscribe_request);
+    populateStubFor(&hal_fn->wifi_nan_subscribe_cancel_request);
+    populateStubFor(&hal_fn->wifi_nan_transmit_followup_request);
+    populateStubFor(&hal_fn->wifi_nan_stats_request);
+    populateStubFor(&hal_fn->wifi_nan_config_request);
+    populateStubFor(&hal_fn->wifi_nan_tca_request);
+    populateStubFor(&hal_fn->wifi_nan_beacon_sdf_payload_request);
+    populateStubFor(&hal_fn->wifi_nan_register_handler);
+    populateStubFor(&hal_fn->wifi_nan_get_version);
+    populateStubFor(&hal_fn->wifi_nan_get_capabilities);
+    populateStubFor(&hal_fn->wifi_nan_data_interface_create);
+    populateStubFor(&hal_fn->wifi_nan_data_interface_delete);
+    populateStubFor(&hal_fn->wifi_nan_data_request_initiator);
+    populateStubFor(&hal_fn->wifi_nan_data_indication_response);
+    populateStubFor(&hal_fn->wifi_nan_data_end);
+    populateStubFor(&hal_fn->wifi_get_packet_filter_capabilities);
+    populateStubFor(&hal_fn->wifi_set_packet_filter);
+    populateStubFor(&hal_fn->wifi_read_packet_filter);
+    populateStubFor(&hal_fn->wifi_get_roaming_capabilities);
+    populateStubFor(&hal_fn->wifi_enable_firmware_roaming);
+    populateStubFor(&hal_fn->wifi_configure_roaming);
+    populateStubFor(&hal_fn->wifi_select_tx_power_scenario);
+    populateStubFor(&hal_fn->wifi_reset_tx_power_scenario);
+    populateStubFor(&hal_fn->wifi_set_radio_mode_change_handler);
+    populateStubFor(&hal_fn->wifi_set_latency_mode);
+    populateStubFor(&hal_fn->wifi_set_thermal_mitigation_mode);
+    populateStubFor(&hal_fn->wifi_virtual_interface_create);
+    populateStubFor(&hal_fn->wifi_virtual_interface_delete);
+    populateStubFor(&hal_fn->wifi_map_dscp_access_category);
+    populateStubFor(&hal_fn->wifi_reset_dscp_mapping);
+    populateStubFor(&hal_fn->wifi_set_subsystem_restart_handler);
+    populateStubFor(&hal_fn->wifi_get_supported_iface_name);
+    populateStubFor(&hal_fn->wifi_early_initialize);
+    populateStubFor(&hal_fn->wifi_get_chip_feature_set);
+    populateStubFor(&hal_fn->wifi_multi_sta_set_primary_connection);
+    populateStubFor(&hal_fn->wifi_multi_sta_set_use_case);
+    populateStubFor(&hal_fn->wifi_set_coex_unsafe_channels);
+    populateStubFor(&hal_fn->wifi_set_voip_mode);
+    populateStubFor(&hal_fn->wifi_twt_register_handler);
+    populateStubFor(&hal_fn->wifi_twt_get_capability);
+    populateStubFor(&hal_fn->wifi_twt_setup_request);
+    populateStubFor(&hal_fn->wifi_twt_teardown_request);
+    populateStubFor(&hal_fn->wifi_twt_info_frame_request);
+    populateStubFor(&hal_fn->wifi_twt_get_stats);
+    populateStubFor(&hal_fn->wifi_twt_clear_stats);
+    populateStubFor(&hal_fn->wifi_set_dtim_config);
+    populateStubFor(&hal_fn->wifi_get_usable_channels);
+    populateStubFor(&hal_fn->wifi_trigger_subsystem_restart);
+    return true;
+}
+}  // namespace legacy_hal
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.6/default/wifi_legacy_hal_stubs.h b/wifi/1.6/default/wifi_legacy_hal_stubs.h
new file mode 100644
index 0000000..c9a03bf
--- /dev/null
+++ b/wifi/1.6/default/wifi_legacy_hal_stubs.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef WIFI_LEGACY_HAL_STUBS_H_
+#define WIFI_LEGACY_HAL_STUBS_H_
+
+#include <hardware_legacy/wifi_hal.h>
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+namespace legacy_hal {
+
+bool initHalFuncTableWithStubs(wifi_hal_fn* hal_fn);
+}  // namespace legacy_hal
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // WIFI_LEGACY_HAL_STUBS_H_
diff --git a/wifi/1.6/default/wifi_mode_controller.cpp b/wifi/1.6/default/wifi_mode_controller.cpp
new file mode 100644
index 0000000..4b8ac7d
--- /dev/null
+++ b/wifi/1.6/default/wifi_mode_controller.cpp
@@ -0,0 +1,89 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android-base/macros.h>
+#include <private/android_filesystem_config.h>
+
+#include "wifi_mode_controller.h"
+
+using android::hardware::wifi::V1_0::IfaceType;
+using android::wifi_hal::DriverTool;
+
+namespace {
+int convertIfaceTypeToFirmwareMode(IfaceType type) {
+    int mode;
+    switch (type) {
+        case IfaceType::AP:
+            mode = DriverTool::kFirmwareModeAp;
+            break;
+        case IfaceType::P2P:
+            mode = DriverTool::kFirmwareModeP2p;
+            break;
+        case IfaceType::NAN:
+            // NAN is exposed in STA mode currently.
+            mode = DriverTool::kFirmwareModeSta;
+            break;
+        case IfaceType::STA:
+            mode = DriverTool::kFirmwareModeSta;
+            break;
+    }
+    return mode;
+}
+}  // namespace
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+namespace mode_controller {
+
+WifiModeController::WifiModeController() : driver_tool_(new DriverTool) {}
+
+bool WifiModeController::isFirmwareModeChangeNeeded(IfaceType type) {
+    return driver_tool_->IsFirmwareModeChangeNeeded(convertIfaceTypeToFirmwareMode(type));
+}
+
+bool WifiModeController::initialize() {
+    if (!driver_tool_->LoadDriver()) {
+        LOG(ERROR) << "Failed to load WiFi driver";
+        return false;
+    }
+    return true;
+}
+
+bool WifiModeController::changeFirmwareMode(IfaceType type) {
+    if (!driver_tool_->ChangeFirmwareMode(convertIfaceTypeToFirmwareMode(type))) {
+        LOG(ERROR) << "Failed to change firmware mode";
+        return false;
+    }
+    return true;
+}
+
+bool WifiModeController::deinitialize() {
+    if (!driver_tool_->UnloadDriver()) {
+        LOG(ERROR) << "Failed to unload WiFi driver";
+        return false;
+    }
+    return true;
+}
+}  // namespace mode_controller
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.6/default/wifi_mode_controller.h b/wifi/1.6/default/wifi_mode_controller.h
new file mode 100644
index 0000000..fee2b66
--- /dev/null
+++ b/wifi/1.6/default/wifi_mode_controller.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef WIFI_MODE_CONTROLLER_H_
+#define WIFI_MODE_CONTROLLER_H_
+
+#include <wifi_hal/driver_tool.h>
+
+#include <android/hardware/wifi/1.0/IWifi.h>
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+namespace mode_controller {
+using namespace android::hardware::wifi::V1_0;
+
+/**
+ * Class that encapsulates all firmware mode configuration.
+ * This class will perform the necessary firmware reloads to put the chip in the
+ * required state (essentially a wrapper over DriverTool).
+ */
+class WifiModeController {
+  public:
+    WifiModeController();
+    virtual ~WifiModeController() = default;
+
+    // Checks if a firmware mode change is necessary to support the specified
+    // iface type operations.
+    virtual bool isFirmwareModeChangeNeeded(IfaceType type);
+    virtual bool initialize();
+    // Change the firmware mode to support the specified iface type operations.
+    virtual bool changeFirmwareMode(IfaceType type);
+    // Unload the driver. This should be invoked whenever |IWifi.stop()| is
+    // invoked.
+    virtual bool deinitialize();
+
+  private:
+    std::unique_ptr<wifi_hal::DriverTool> driver_tool_;
+};
+
+}  // namespace mode_controller
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // WIFI_MODE_CONTROLLER_H_
diff --git a/wifi/1.6/default/wifi_nan_iface.cpp b/wifi/1.6/default/wifi_nan_iface.cpp
new file mode 100644
index 0000000..236cb64
--- /dev/null
+++ b/wifi/1.6/default/wifi_nan_iface.cpp
@@ -0,0 +1,905 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+
+#include "hidl_return_util.h"
+#include "hidl_struct_util.h"
+#include "wifi_nan_iface.h"
+#include "wifi_status_util.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+using hidl_return_util::validateAndCall;
+
+WifiNanIface::WifiNanIface(const std::string& ifname, bool is_dedicated_iface,
+                           const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
+                           const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util)
+    : ifname_(ifname),
+      is_dedicated_iface_(is_dedicated_iface),
+      legacy_hal_(legacy_hal),
+      iface_util_(iface_util),
+      is_valid_(true) {
+    if (is_dedicated_iface_) {
+        // If using a dedicated iface, set the iface up first.
+        if (!iface_util_.lock()->setUpState(ifname_, true)) {
+            // Fatal failure, invalidate the iface object.
+            invalidate();
+            return;
+        }
+    }
+    // Register all the callbacks here. these should be valid for the lifetime
+    // of the object. Whenever the mode changes legacy HAL will remove
+    // all of these callbacks.
+    legacy_hal::NanCallbackHandlers callback_handlers;
+    android::wp<WifiNanIface> weak_ptr_this(this);
+
+    // Callback for response.
+    callback_handlers.on_notify_response = [weak_ptr_this](legacy_hal::transaction_id id,
+                                                           const legacy_hal::NanResponseMsg& msg) {
+        const auto shared_ptr_this = weak_ptr_this.promote();
+        if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+            LOG(ERROR) << "Callback invoked on an invalid object";
+            return;
+        }
+        WifiNanStatus wifiNanStatus;
+        if (!hidl_struct_util::convertLegacyNanResponseHeaderToHidl(msg, &wifiNanStatus)) {
+            LOG(ERROR) << "Failed to convert nan response header";
+            return;
+        }
+
+        switch (msg.response_type) {
+            case legacy_hal::NAN_RESPONSE_ENABLED: {
+                for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                    if (!callback->notifyEnableResponse(id, wifiNanStatus).isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+                break;
+            }
+            case legacy_hal::NAN_RESPONSE_DISABLED: {
+                for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                    if (!callback->notifyDisableResponse(id, wifiNanStatus).isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+                break;
+            }
+            case legacy_hal::NAN_RESPONSE_PUBLISH: {
+                for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                    if (!callback->notifyStartPublishResponse(id, wifiNanStatus,
+                                                              msg.body.publish_response.publish_id)
+                                 .isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+                break;
+            }
+            case legacy_hal::NAN_RESPONSE_PUBLISH_CANCEL: {
+                for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                    if (!callback->notifyStopPublishResponse(id, wifiNanStatus).isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+                break;
+            }
+            case legacy_hal::NAN_RESPONSE_TRANSMIT_FOLLOWUP: {
+                for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                    if (!callback->notifyTransmitFollowupResponse(id, wifiNanStatus).isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+                break;
+            }
+            case legacy_hal::NAN_RESPONSE_SUBSCRIBE: {
+                for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                    if (!callback->notifyStartSubscribeResponse(
+                                         id, wifiNanStatus,
+                                         msg.body.subscribe_response.subscribe_id)
+                                 .isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+                break;
+            }
+            case legacy_hal::NAN_RESPONSE_SUBSCRIBE_CANCEL: {
+                for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                    if (!callback->notifyStopSubscribeResponse(id, wifiNanStatus).isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+                break;
+            }
+            case legacy_hal::NAN_RESPONSE_CONFIG: {
+                for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                    if (!callback->notifyConfigResponse(id, wifiNanStatus).isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+                break;
+            }
+            case legacy_hal::NAN_GET_CAPABILITIES: {
+                V1_5::NanCapabilities hidl_struct;
+                if (!hidl_struct_util::convertLegacyNanCapabilitiesResponseToHidl(
+                            msg.body.nan_capabilities, &hidl_struct)) {
+                    LOG(ERROR) << "Failed to convert nan capabilities response";
+                    return;
+                }
+                for (const auto& callback : shared_ptr_this->getEventCallbacks_1_5()) {
+                    if (!callback->notifyCapabilitiesResponse_1_5(id, wifiNanStatus, hidl_struct)
+                                 .isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+                break;
+            }
+            case legacy_hal::NAN_DP_INTERFACE_CREATE: {
+                for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                    if (!callback->notifyCreateDataInterfaceResponse(id, wifiNanStatus).isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+                break;
+            }
+            case legacy_hal::NAN_DP_INTERFACE_DELETE: {
+                for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                    if (!callback->notifyDeleteDataInterfaceResponse(id, wifiNanStatus).isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+                break;
+            }
+            case legacy_hal::NAN_DP_INITIATOR_RESPONSE: {
+                for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                    if (!callback->notifyInitiateDataPathResponse(
+                                         id, wifiNanStatus,
+                                         msg.body.data_request_response.ndp_instance_id)
+                                 .isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+                break;
+            }
+            case legacy_hal::NAN_DP_RESPONDER_RESPONSE: {
+                for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                    if (!callback->notifyRespondToDataPathIndicationResponse(id, wifiNanStatus)
+                                 .isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+                break;
+            }
+            case legacy_hal::NAN_DP_END: {
+                for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                    if (!callback->notifyTerminateDataPathResponse(id, wifiNanStatus).isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+                break;
+            }
+            case legacy_hal::NAN_RESPONSE_BEACON_SDF_PAYLOAD:
+            /* fall through */
+            case legacy_hal::NAN_RESPONSE_TCA:
+            /* fall through */
+            case legacy_hal::NAN_RESPONSE_STATS:
+            /* fall through */
+            case legacy_hal::NAN_RESPONSE_ERROR:
+            /* fall through */
+            default:
+                LOG(ERROR) << "Unknown or unhandled response type: " << msg.response_type;
+                return;
+        }
+    };
+
+    callback_handlers.on_event_disc_eng_event =
+            [weak_ptr_this](const legacy_hal::NanDiscEngEventInd& msg) {
+                const auto shared_ptr_this = weak_ptr_this.promote();
+                if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                    LOG(ERROR) << "Callback invoked on an invalid object";
+                    return;
+                }
+                NanClusterEventInd hidl_struct;
+                // event types defined identically - hence can be cast
+                hidl_struct.eventType = (NanClusterEventType)msg.event_type;
+                hidl_struct.addr = msg.data.mac_addr.addr;
+
+                for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                    if (!callback->eventClusterEvent(hidl_struct).isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+            };
+
+    callback_handlers.on_event_disabled = [weak_ptr_this](const legacy_hal::NanDisabledInd& msg) {
+        const auto shared_ptr_this = weak_ptr_this.promote();
+        if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+            LOG(ERROR) << "Callback invoked on an invalid object";
+            return;
+        }
+        WifiNanStatus status;
+        hidl_struct_util::convertToWifiNanStatus(msg.reason, msg.nan_reason, sizeof(msg.nan_reason),
+                                                 &status);
+
+        for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+            if (!callback->eventDisabled(status).isOk()) {
+                LOG(ERROR) << "Failed to invoke the callback";
+            }
+        }
+    };
+
+    callback_handlers.on_event_publish_terminated =
+            [weak_ptr_this](const legacy_hal::NanPublishTerminatedInd& msg) {
+                const auto shared_ptr_this = weak_ptr_this.promote();
+                if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                    LOG(ERROR) << "Callback invoked on an invalid object";
+                    return;
+                }
+                WifiNanStatus status;
+                hidl_struct_util::convertToWifiNanStatus(msg.reason, msg.nan_reason,
+                                                         sizeof(msg.nan_reason), &status);
+
+                for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                    if (!callback->eventPublishTerminated(msg.publish_id, status).isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+            };
+
+    callback_handlers.on_event_subscribe_terminated =
+            [weak_ptr_this](const legacy_hal::NanSubscribeTerminatedInd& msg) {
+                const auto shared_ptr_this = weak_ptr_this.promote();
+                if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                    LOG(ERROR) << "Callback invoked on an invalid object";
+                    return;
+                }
+                WifiNanStatus status;
+                hidl_struct_util::convertToWifiNanStatus(msg.reason, msg.nan_reason,
+                                                         sizeof(msg.nan_reason), &status);
+
+                for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                    if (!callback->eventSubscribeTerminated(msg.subscribe_id, status).isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+            };
+
+    callback_handlers.on_event_match = [weak_ptr_this](const legacy_hal::NanMatchInd& msg) {
+        const auto shared_ptr_this = weak_ptr_this.promote();
+        if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+            LOG(ERROR) << "Callback invoked on an invalid object";
+            return;
+        }
+        NanMatchInd hidl_struct;
+        if (!hidl_struct_util::convertLegacyNanMatchIndToHidl(msg, &hidl_struct)) {
+            LOG(ERROR) << "Failed to convert nan capabilities response";
+            return;
+        }
+
+        for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+            if (!callback->eventMatch(hidl_struct).isOk()) {
+                LOG(ERROR) << "Failed to invoke the callback";
+            }
+        }
+    };
+
+    callback_handlers.on_event_match_expired = [weak_ptr_this](
+                                                       const legacy_hal::NanMatchExpiredInd& msg) {
+        const auto shared_ptr_this = weak_ptr_this.promote();
+        if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+            LOG(ERROR) << "Callback invoked on an invalid object";
+            return;
+        }
+        for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+            if (!callback->eventMatchExpired(msg.publish_subscribe_id, msg.requestor_instance_id)
+                         .isOk()) {
+                LOG(ERROR) << "Failed to invoke the callback";
+            }
+        }
+    };
+
+    callback_handlers.on_event_followup = [weak_ptr_this](const legacy_hal::NanFollowupInd& msg) {
+        const auto shared_ptr_this = weak_ptr_this.promote();
+        if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+            LOG(ERROR) << "Callback invoked on an invalid object";
+            return;
+        }
+        NanFollowupReceivedInd hidl_struct;
+        if (!hidl_struct_util::convertLegacyNanFollowupIndToHidl(msg, &hidl_struct)) {
+            LOG(ERROR) << "Failed to convert nan capabilities response";
+            return;
+        }
+
+        for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+            if (!callback->eventFollowupReceived(hidl_struct).isOk()) {
+                LOG(ERROR) << "Failed to invoke the callback";
+            }
+        }
+    };
+
+    callback_handlers.on_event_transmit_follow_up =
+            [weak_ptr_this](const legacy_hal::NanTransmitFollowupInd& msg) {
+                const auto shared_ptr_this = weak_ptr_this.promote();
+                if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                    LOG(ERROR) << "Callback invoked on an invalid object";
+                    return;
+                }
+                WifiNanStatus status;
+                hidl_struct_util::convertToWifiNanStatus(msg.reason, msg.nan_reason,
+                                                         sizeof(msg.nan_reason), &status);
+
+                for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                    if (!callback->eventTransmitFollowup(msg.id, status).isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+            };
+
+    callback_handlers.on_event_data_path_request =
+            [weak_ptr_this](const legacy_hal::NanDataPathRequestInd& msg) {
+                const auto shared_ptr_this = weak_ptr_this.promote();
+                if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                    LOG(ERROR) << "Callback invoked on an invalid object";
+                    return;
+                }
+                NanDataPathRequestInd hidl_struct;
+                if (!hidl_struct_util::convertLegacyNanDataPathRequestIndToHidl(msg,
+                                                                                &hidl_struct)) {
+                    LOG(ERROR) << "Failed to convert nan capabilities response";
+                    return;
+                }
+
+                for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                    if (!callback->eventDataPathRequest(hidl_struct).isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+            };
+
+    callback_handlers.on_event_data_path_confirm =
+            [weak_ptr_this](const legacy_hal::NanDataPathConfirmInd& msg) {
+                const auto shared_ptr_this = weak_ptr_this.promote();
+                if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                    LOG(ERROR) << "Callback invoked on an invalid object";
+                    return;
+                }
+                V1_2::NanDataPathConfirmInd hidl_struct;
+                if (!hidl_struct_util::convertLegacyNanDataPathConfirmIndToHidl(msg,
+                                                                                &hidl_struct)) {
+                    LOG(ERROR) << "Failed to convert nan capabilities response";
+                    return;
+                }
+
+                for (const auto& callback : shared_ptr_this->getEventCallbacks_1_2()) {
+                    if (!callback->eventDataPathConfirm_1_2(hidl_struct).isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+            };
+
+    callback_handlers.on_event_data_path_end =
+            [weak_ptr_this](const legacy_hal::NanDataPathEndInd& msg) {
+                const auto shared_ptr_this = weak_ptr_this.promote();
+                if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                    LOG(ERROR) << "Callback invoked on an invalid object";
+                    return;
+                }
+                for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                    for (int i = 0; i < msg.num_ndp_instances; ++i) {
+                        if (!callback->eventDataPathTerminated(msg.ndp_instance_id[i]).isOk()) {
+                            LOG(ERROR) << "Failed to invoke the callback";
+                        }
+                    }
+                }
+            };
+
+    callback_handlers.on_event_beacon_sdf_payload =
+            [weak_ptr_this](const legacy_hal::NanBeaconSdfPayloadInd& /* msg */) {
+                LOG(ERROR) << "on_event_beacon_sdf_payload - should not be called";
+            };
+
+    callback_handlers.on_event_range_request =
+            [weak_ptr_this](const legacy_hal::NanRangeRequestInd& /* msg */) {
+                LOG(ERROR) << "on_event_range_request - should not be called";
+            };
+
+    callback_handlers.on_event_range_report =
+            [weak_ptr_this](const legacy_hal::NanRangeReportInd& /* msg */) {
+                LOG(ERROR) << "on_event_range_report - should not be called";
+            };
+
+    callback_handlers.on_event_schedule_update =
+            [weak_ptr_this](const legacy_hal::NanDataPathScheduleUpdateInd& msg) {
+                const auto shared_ptr_this = weak_ptr_this.promote();
+                if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                    LOG(ERROR) << "Callback invoked on an invalid object";
+                    return;
+                }
+                V1_2::NanDataPathScheduleUpdateInd hidl_struct;
+                if (!hidl_struct_util::convertLegacyNanDataPathScheduleUpdateIndToHidl(
+                            msg, &hidl_struct)) {
+                    LOG(ERROR) << "Failed to convert nan capabilities response";
+                    return;
+                }
+
+                for (const auto& callback : shared_ptr_this->getEventCallbacks_1_2()) {
+                    if (!callback->eventDataPathScheduleUpdate(hidl_struct).isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+            };
+
+    legacy_hal::wifi_error legacy_status =
+            legacy_hal_.lock()->nanRegisterCallbackHandlers(ifname_, callback_handlers);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        LOG(ERROR) << "Failed to register nan callbacks. Invalidating object";
+        invalidate();
+    }
+
+    // Register for iface state toggle events.
+    iface_util::IfaceEventHandlers event_handlers = {};
+    event_handlers.on_state_toggle_off_on = [weak_ptr_this](const std::string& /* iface_name */) {
+        const auto shared_ptr_this = weak_ptr_this.promote();
+        if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+            LOG(ERROR) << "Callback invoked on an invalid object";
+            return;
+        }
+        // Tell framework that NAN has been disabled.
+        WifiNanStatus status = {NanStatusType::UNSUPPORTED_CONCURRENCY_NAN_DISABLED, ""};
+        for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+            if (!callback->eventDisabled(status).isOk()) {
+                LOG(ERROR) << "Failed to invoke the callback";
+            }
+        }
+    };
+    iface_util_.lock()->registerIfaceEventHandlers(ifname_, event_handlers);
+}
+
+void WifiNanIface::invalidate() {
+    if (!isValid()) {
+        return;
+    }
+    // send commands to HAL to actually disable and destroy interfaces
+    legacy_hal_.lock()->nanDisableRequest(ifname_, 0xFFFF);
+    legacy_hal_.lock()->nanDataInterfaceDelete(ifname_, 0xFFFE, "aware_data0");
+    legacy_hal_.lock()->nanDataInterfaceDelete(ifname_, 0xFFFD, "aware_data1");
+    iface_util_.lock()->unregisterIfaceEventHandlers(ifname_);
+    legacy_hal_.reset();
+    event_cb_handler_.invalidate();
+    event_cb_handler_1_2_.invalidate();
+    event_cb_handler_1_5_.invalidate();
+    is_valid_ = false;
+    if (is_dedicated_iface_) {
+        // If using a dedicated iface, set the iface down.
+        iface_util_.lock()->setUpState(ifname_, false);
+    }
+}
+
+bool WifiNanIface::isValid() {
+    return is_valid_;
+}
+
+std::string WifiNanIface::getName() {
+    return ifname_;
+}
+
+std::set<sp<V1_0::IWifiNanIfaceEventCallback>> WifiNanIface::getEventCallbacks() {
+    return event_cb_handler_.getCallbacks();
+}
+
+std::set<sp<V1_2::IWifiNanIfaceEventCallback>> WifiNanIface::getEventCallbacks_1_2() {
+    return event_cb_handler_1_2_.getCallbacks();
+}
+
+std::set<sp<V1_5::IWifiNanIfaceEventCallback>> WifiNanIface::getEventCallbacks_1_5() {
+    return event_cb_handler_1_5_.getCallbacks();
+}
+
+Return<void> WifiNanIface::getName(getName_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::getNameInternal, hidl_status_cb);
+}
+
+Return<void> WifiNanIface::getType(getType_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::getTypeInternal, hidl_status_cb);
+}
+
+Return<void> WifiNanIface::registerEventCallback(
+        const sp<V1_0::IWifiNanIfaceEventCallback>& callback,
+        registerEventCallback_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::registerEventCallbackInternal, hidl_status_cb, callback);
+}
+
+Return<void> WifiNanIface::getCapabilitiesRequest(uint16_t cmd_id,
+                                                  getCapabilitiesRequest_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::getCapabilitiesRequestInternal, hidl_status_cb, cmd_id);
+}
+
+Return<void> WifiNanIface::enableRequest(uint16_t cmd_id, const V1_0::NanEnableRequest& msg,
+                                         enableRequest_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::enableRequestInternal, hidl_status_cb, cmd_id, msg);
+}
+
+Return<void> WifiNanIface::configRequest(uint16_t cmd_id, const V1_0::NanConfigRequest& msg,
+                                         configRequest_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::configRequestInternal, hidl_status_cb, cmd_id, msg);
+}
+
+Return<void> WifiNanIface::disableRequest(uint16_t cmd_id, disableRequest_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::disableRequestInternal, hidl_status_cb, cmd_id);
+}
+
+Return<void> WifiNanIface::startPublishRequest(uint16_t cmd_id, const NanPublishRequest& msg,
+                                               startPublishRequest_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::startPublishRequestInternal, hidl_status_cb, cmd_id, msg);
+}
+
+Return<void> WifiNanIface::stopPublishRequest(uint16_t cmd_id, uint8_t sessionId,
+                                              stopPublishRequest_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::stopPublishRequestInternal, hidl_status_cb, cmd_id,
+                           sessionId);
+}
+
+Return<void> WifiNanIface::startSubscribeRequest(uint16_t cmd_id, const NanSubscribeRequest& msg,
+                                                 startSubscribeRequest_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::startSubscribeRequestInternal, hidl_status_cb, cmd_id,
+                           msg);
+}
+
+Return<void> WifiNanIface::stopSubscribeRequest(uint16_t cmd_id, uint8_t sessionId,
+                                                stopSubscribeRequest_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::stopSubscribeRequestInternal, hidl_status_cb, cmd_id,
+                           sessionId);
+}
+
+Return<void> WifiNanIface::transmitFollowupRequest(uint16_t cmd_id,
+                                                   const NanTransmitFollowupRequest& msg,
+                                                   transmitFollowupRequest_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::transmitFollowupRequestInternal, hidl_status_cb, cmd_id,
+                           msg);
+}
+
+Return<void> WifiNanIface::createDataInterfaceRequest(
+        uint16_t cmd_id, const hidl_string& iface_name,
+        createDataInterfaceRequest_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::createDataInterfaceRequestInternal, hidl_status_cb,
+                           cmd_id, iface_name);
+}
+
+Return<void> WifiNanIface::deleteDataInterfaceRequest(
+        uint16_t cmd_id, const hidl_string& iface_name,
+        deleteDataInterfaceRequest_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::deleteDataInterfaceRequestInternal, hidl_status_cb,
+                           cmd_id, iface_name);
+}
+
+Return<void> WifiNanIface::initiateDataPathRequest(uint16_t cmd_id,
+                                                   const NanInitiateDataPathRequest& msg,
+                                                   initiateDataPathRequest_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::initiateDataPathRequestInternal, hidl_status_cb, cmd_id,
+                           msg);
+}
+
+Return<void> WifiNanIface::respondToDataPathIndicationRequest(
+        uint16_t cmd_id, const NanRespondToDataPathIndicationRequest& msg,
+        respondToDataPathIndicationRequest_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::respondToDataPathIndicationRequestInternal,
+                           hidl_status_cb, cmd_id, msg);
+}
+
+Return<void> WifiNanIface::terminateDataPathRequest(uint16_t cmd_id, uint32_t ndpInstanceId,
+                                                    terminateDataPathRequest_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::terminateDataPathRequestInternal, hidl_status_cb, cmd_id,
+                           ndpInstanceId);
+}
+
+Return<void> WifiNanIface::registerEventCallback_1_2(
+        const sp<V1_2::IWifiNanIfaceEventCallback>& callback,
+        registerEventCallback_1_2_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::registerEventCallback_1_2Internal, hidl_status_cb,
+                           callback);
+}
+
+Return<void> WifiNanIface::enableRequest_1_2(uint16_t cmd_id, const V1_0::NanEnableRequest& msg1,
+                                             const V1_2::NanConfigRequestSupplemental& msg2,
+                                             enableRequest_1_2_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::enableRequest_1_2Internal, hidl_status_cb, cmd_id, msg1,
+                           msg2);
+}
+
+Return<void> WifiNanIface::configRequest_1_2(uint16_t cmd_id, const V1_0::NanConfigRequest& msg1,
+                                             const V1_2::NanConfigRequestSupplemental& msg2,
+                                             configRequest_1_2_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::configRequest_1_2Internal, hidl_status_cb, cmd_id, msg1,
+                           msg2);
+}
+
+Return<void> WifiNanIface::enableRequest_1_4(uint16_t cmd_id, const V1_4::NanEnableRequest& msg1,
+                                             const V1_2::NanConfigRequestSupplemental& msg2,
+                                             enableRequest_1_4_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::enableRequest_1_4Internal, hidl_status_cb, cmd_id, msg1,
+                           msg2);
+}
+
+Return<void> WifiNanIface::configRequest_1_4(uint16_t cmd_id, const V1_4::NanConfigRequest& msg1,
+                                             const V1_2::NanConfigRequestSupplemental& msg2,
+                                             configRequest_1_4_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::configRequest_1_4Internal, hidl_status_cb, cmd_id, msg1,
+                           msg2);
+}
+
+Return<void> WifiNanIface::registerEventCallback_1_5(
+        const sp<V1_5::IWifiNanIfaceEventCallback>& callback,
+        registerEventCallback_1_5_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::registerEventCallback_1_5Internal, hidl_status_cb,
+                           callback);
+}
+
+Return<void> WifiNanIface::enableRequest_1_5(uint16_t cmd_id, const V1_4::NanEnableRequest& msg1,
+                                             const V1_5::NanConfigRequestSupplemental& msg2,
+                                             enableRequest_1_5_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::enableRequest_1_5Internal, hidl_status_cb, cmd_id, msg1,
+                           msg2);
+}
+
+Return<void> WifiNanIface::configRequest_1_5(uint16_t cmd_id, const V1_4::NanConfigRequest& msg1,
+                                             const V1_5::NanConfigRequestSupplemental& msg2,
+                                             configRequest_1_5_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::configRequest_1_5Internal, hidl_status_cb, cmd_id, msg1,
+                           msg2);
+}
+
+Return<void> WifiNanIface::getCapabilitiesRequest_1_5(
+        uint16_t cmd_id, getCapabilitiesRequest_1_5_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::getCapabilitiesRequest_1_5Internal, hidl_status_cb,
+                           cmd_id);
+}
+
+std::pair<WifiStatus, std::string> WifiNanIface::getNameInternal() {
+    return {createWifiStatus(WifiStatusCode::SUCCESS), ifname_};
+}
+
+std::pair<WifiStatus, IfaceType> WifiNanIface::getTypeInternal() {
+    return {createWifiStatus(WifiStatusCode::SUCCESS), IfaceType::NAN};
+}
+
+WifiStatus WifiNanIface::registerEventCallbackInternal(
+        const sp<V1_0::IWifiNanIfaceEventCallback>& callback) {
+    if (!event_cb_handler_.addCallback(callback)) {
+        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+    }
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+WifiStatus WifiNanIface::getCapabilitiesRequestInternal(uint16_t /* cmd_id */) {
+    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
+}
+
+WifiStatus WifiNanIface::enableRequestInternal(uint16_t /* cmd_id */,
+                                               const V1_0::NanEnableRequest& /* msg */) {
+    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
+}
+
+WifiStatus WifiNanIface::configRequestInternal(uint16_t /* cmd_id */,
+                                               const V1_0::NanConfigRequest& /* msg */) {
+    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
+}
+
+WifiStatus WifiNanIface::disableRequestInternal(uint16_t cmd_id) {
+    legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->nanDisableRequest(ifname_, cmd_id);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiNanIface::startPublishRequestInternal(uint16_t cmd_id,
+                                                     const NanPublishRequest& msg) {
+    legacy_hal::NanPublishRequest legacy_msg;
+    if (!hidl_struct_util::convertHidlNanPublishRequestToLegacy(msg, &legacy_msg)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    legacy_hal::wifi_error legacy_status =
+            legacy_hal_.lock()->nanPublishRequest(ifname_, cmd_id, legacy_msg);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiNanIface::stopPublishRequestInternal(uint16_t cmd_id, uint8_t sessionId) {
+    legacy_hal::NanPublishCancelRequest legacy_msg;
+    legacy_msg.publish_id = sessionId;
+    legacy_hal::wifi_error legacy_status =
+            legacy_hal_.lock()->nanPublishCancelRequest(ifname_, cmd_id, legacy_msg);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiNanIface::startSubscribeRequestInternal(uint16_t cmd_id,
+                                                       const NanSubscribeRequest& msg) {
+    legacy_hal::NanSubscribeRequest legacy_msg;
+    if (!hidl_struct_util::convertHidlNanSubscribeRequestToLegacy(msg, &legacy_msg)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    legacy_hal::wifi_error legacy_status =
+            legacy_hal_.lock()->nanSubscribeRequest(ifname_, cmd_id, legacy_msg);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiNanIface::stopSubscribeRequestInternal(uint16_t cmd_id, uint8_t sessionId) {
+    legacy_hal::NanSubscribeCancelRequest legacy_msg;
+    legacy_msg.subscribe_id = sessionId;
+    legacy_hal::wifi_error legacy_status =
+            legacy_hal_.lock()->nanSubscribeCancelRequest(ifname_, cmd_id, legacy_msg);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiNanIface::transmitFollowupRequestInternal(uint16_t cmd_id,
+                                                         const NanTransmitFollowupRequest& msg) {
+    legacy_hal::NanTransmitFollowupRequest legacy_msg;
+    if (!hidl_struct_util::convertHidlNanTransmitFollowupRequestToLegacy(msg, &legacy_msg)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    legacy_hal::wifi_error legacy_status =
+            legacy_hal_.lock()->nanTransmitFollowupRequest(ifname_, cmd_id, legacy_msg);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiNanIface::createDataInterfaceRequestInternal(uint16_t cmd_id,
+                                                            const std::string& iface_name) {
+    legacy_hal::wifi_error legacy_status =
+            legacy_hal_.lock()->nanDataInterfaceCreate(ifname_, cmd_id, iface_name);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+WifiStatus WifiNanIface::deleteDataInterfaceRequestInternal(uint16_t cmd_id,
+                                                            const std::string& iface_name) {
+    legacy_hal::wifi_error legacy_status =
+            legacy_hal_.lock()->nanDataInterfaceDelete(ifname_, cmd_id, iface_name);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+WifiStatus WifiNanIface::initiateDataPathRequestInternal(uint16_t cmd_id,
+                                                         const NanInitiateDataPathRequest& msg) {
+    legacy_hal::NanDataPathInitiatorRequest legacy_msg;
+    if (!hidl_struct_util::convertHidlNanDataPathInitiatorRequestToLegacy(msg, &legacy_msg)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    legacy_hal::wifi_error legacy_status =
+            legacy_hal_.lock()->nanDataRequestInitiator(ifname_, cmd_id, legacy_msg);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+WifiStatus WifiNanIface::respondToDataPathIndicationRequestInternal(
+        uint16_t cmd_id, const NanRespondToDataPathIndicationRequest& msg) {
+    legacy_hal::NanDataPathIndicationResponse legacy_msg;
+    if (!hidl_struct_util::convertHidlNanDataPathIndicationResponseToLegacy(msg, &legacy_msg)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    legacy_hal::wifi_error legacy_status =
+            legacy_hal_.lock()->nanDataIndicationResponse(ifname_, cmd_id, legacy_msg);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+WifiStatus WifiNanIface::terminateDataPathRequestInternal(uint16_t cmd_id, uint32_t ndpInstanceId) {
+    legacy_hal::wifi_error legacy_status =
+            legacy_hal_.lock()->nanDataEnd(ifname_, cmd_id, ndpInstanceId);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiNanIface::registerEventCallback_1_2Internal(
+        const sp<V1_2::IWifiNanIfaceEventCallback>& callback) {
+    sp<V1_0::IWifiNanIfaceEventCallback> callback_1_0 = callback;
+    if (!event_cb_handler_.addCallback(callback_1_0)) {
+        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+    }
+    if (!event_cb_handler_1_2_.addCallback(callback)) {
+        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+    }
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+WifiStatus WifiNanIface::enableRequest_1_2Internal(
+        uint16_t /* cmd_id */, const V1_0::NanEnableRequest& /* msg1 */,
+        const V1_2::NanConfigRequestSupplemental& /* msg2 */) {
+    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
+}
+
+WifiStatus WifiNanIface::configRequest_1_2Internal(
+        uint16_t /* cmd_id */, const V1_0::NanConfigRequest& /* msg1 */,
+        const V1_2::NanConfigRequestSupplemental& /* msg2 */) {
+    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
+}
+
+WifiStatus WifiNanIface::enableRequest_1_4Internal(
+        uint16_t /* cmd_id */, const V1_4::NanEnableRequest& /* msg1 */,
+        const V1_2::NanConfigRequestSupplemental& /* msg2 */) {
+    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
+}
+
+WifiStatus WifiNanIface::configRequest_1_4Internal(
+        uint16_t /* cmd_id */, const V1_4::NanConfigRequest& /* msg1 */,
+        const V1_2::NanConfigRequestSupplemental& /* msg2 */) {
+    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
+}
+
+WifiStatus WifiNanIface::registerEventCallback_1_5Internal(
+        const sp<V1_5::IWifiNanIfaceEventCallback>& callback) {
+    sp<V1_0::IWifiNanIfaceEventCallback> callback_1_0 = callback;
+    if (!event_cb_handler_.addCallback(callback_1_0)) {
+        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+    }
+    sp<V1_2::IWifiNanIfaceEventCallback> callback_1_2 = callback;
+    if (!event_cb_handler_1_2_.addCallback(callback_1_2)) {
+        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+    }
+    if (!event_cb_handler_1_5_.addCallback(callback)) {
+        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+    }
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+WifiStatus WifiNanIface::getCapabilitiesRequest_1_5Internal(uint16_t cmd_id) {
+    legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->nanGetCapabilities(ifname_, cmd_id);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiNanIface::enableRequest_1_5Internal(uint16_t cmd_id,
+                                                   const V1_4::NanEnableRequest& msg1,
+                                                   const V1_5::NanConfigRequestSupplemental& msg2) {
+    legacy_hal::NanEnableRequest legacy_msg;
+    if (!hidl_struct_util::convertHidlNanEnableRequest_1_5ToLegacy(msg1, msg2, &legacy_msg)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    legacy_hal::wifi_error legacy_status =
+            legacy_hal_.lock()->nanEnableRequest(ifname_, cmd_id, legacy_msg);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiNanIface::configRequest_1_5Internal(uint16_t cmd_id,
+                                                   const V1_4::NanConfigRequest& msg1,
+                                                   const V1_5::NanConfigRequestSupplemental& msg2) {
+    legacy_hal::NanConfigRequest legacy_msg;
+    if (!hidl_struct_util::convertHidlNanConfigRequest_1_5ToLegacy(msg1, msg2, &legacy_msg)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    legacy_hal::wifi_error legacy_status =
+            legacy_hal_.lock()->nanConfigRequest(ifname_, cmd_id, legacy_msg);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.6/default/wifi_nan_iface.h b/wifi/1.6/default/wifi_nan_iface.h
new file mode 100644
index 0000000..c445afc
--- /dev/null
+++ b/wifi/1.6/default/wifi_nan_iface.h
@@ -0,0 +1,174 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef WIFI_NAN_IFACE_H_
+#define WIFI_NAN_IFACE_H_
+
+#include <android-base/macros.h>
+#include <android/hardware/wifi/1.5/IWifiNanIface.h>
+#include <android/hardware/wifi/1.5/IWifiNanIfaceEventCallback.h>
+
+#include "hidl_callback_util.h"
+#include "wifi_iface_util.h"
+#include "wifi_legacy_hal.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+using namespace android::hardware::wifi::V1_0;
+using namespace android::hardware::wifi::V1_2;
+
+/**
+ * HIDL interface object used to control a NAN Iface instance.
+ */
+class WifiNanIface : public V1_5::IWifiNanIface {
+  public:
+    WifiNanIface(const std::string& ifname, bool is_dedicated_iface,
+                 const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
+                 const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util);
+    // Refer to |WifiChip::invalidate()|.
+    void invalidate();
+    bool isValid();
+    std::string getName();
+
+    // HIDL methods exposed.
+    Return<void> getName(getName_cb hidl_status_cb) override;
+    Return<void> getType(getType_cb hidl_status_cb) override;
+    Return<void> registerEventCallback(const sp<V1_0::IWifiNanIfaceEventCallback>& callback,
+                                       registerEventCallback_cb hidl_status_cb) override;
+    Return<void> getCapabilitiesRequest(uint16_t cmd_id,
+                                        getCapabilitiesRequest_cb hidl_status_cb) override;
+    Return<void> enableRequest(uint16_t cmd_id, const V1_0::NanEnableRequest& msg,
+                               enableRequest_cb hidl_status_cb) override;
+    Return<void> configRequest(uint16_t cmd_id, const V1_0::NanConfigRequest& msg,
+                               configRequest_cb hidl_status_cb) override;
+    Return<void> disableRequest(uint16_t cmd_id, disableRequest_cb hidl_status_cb) override;
+    Return<void> startPublishRequest(uint16_t cmd_id, const NanPublishRequest& msg,
+                                     startPublishRequest_cb hidl_status_cb) override;
+    Return<void> stopPublishRequest(uint16_t cmd_id, uint8_t sessionId,
+                                    stopPublishRequest_cb hidl_status_cb) override;
+    Return<void> startSubscribeRequest(uint16_t cmd_id, const NanSubscribeRequest& msg,
+                                       startSubscribeRequest_cb hidl_status_cb) override;
+    Return<void> stopSubscribeRequest(uint16_t cmd_id, uint8_t sessionId,
+                                      stopSubscribeRequest_cb hidl_status_cb) override;
+    Return<void> transmitFollowupRequest(uint16_t cmd_id, const NanTransmitFollowupRequest& msg,
+                                         transmitFollowupRequest_cb hidl_status_cb) override;
+    Return<void> createDataInterfaceRequest(uint16_t cmd_id, const hidl_string& iface_name,
+                                            createDataInterfaceRequest_cb hidl_status_cb) override;
+    Return<void> deleteDataInterfaceRequest(uint16_t cmd_id, const hidl_string& iface_name,
+                                            deleteDataInterfaceRequest_cb hidl_status_cb) override;
+    Return<void> initiateDataPathRequest(uint16_t cmd_id, const NanInitiateDataPathRequest& msg,
+                                         initiateDataPathRequest_cb hidl_status_cb) override;
+    Return<void> respondToDataPathIndicationRequest(
+            uint16_t cmd_id, const NanRespondToDataPathIndicationRequest& msg,
+            respondToDataPathIndicationRequest_cb hidl_status_cb) override;
+    Return<void> terminateDataPathRequest(uint16_t cmd_id, uint32_t ndpInstanceId,
+                                          terminateDataPathRequest_cb hidl_status_cb) override;
+
+    Return<void> registerEventCallback_1_2(const sp<V1_2::IWifiNanIfaceEventCallback>& callback,
+                                           registerEventCallback_1_2_cb hidl_status_cb) override;
+    Return<void> enableRequest_1_2(uint16_t cmd_id, const V1_0::NanEnableRequest& msg1,
+                                   const V1_2::NanConfigRequestSupplemental& msg2,
+                                   enableRequest_1_2_cb hidl_status_cb) override;
+    Return<void> configRequest_1_2(uint16_t cmd_id, const V1_0::NanConfigRequest& msg1,
+                                   const V1_2::NanConfigRequestSupplemental& msg2,
+                                   configRequest_1_2_cb hidl_status_cb) override;
+    Return<void> enableRequest_1_4(uint16_t cmd_id, const V1_4::NanEnableRequest& msg1,
+                                   const V1_2::NanConfigRequestSupplemental& msg2,
+                                   enableRequest_1_4_cb hidl_status_cb) override;
+    Return<void> configRequest_1_4(uint16_t cmd_id, const V1_4::NanConfigRequest& msg1,
+                                   const V1_2::NanConfigRequestSupplemental& msg2,
+                                   configRequest_1_4_cb hidl_status_cb) override;
+    Return<void> registerEventCallback_1_5(const sp<V1_5::IWifiNanIfaceEventCallback>& callback,
+                                           registerEventCallback_1_5_cb hidl_status_cb) override;
+    Return<void> enableRequest_1_5(uint16_t cmd_id, const V1_4::NanEnableRequest& msg1,
+                                   const V1_5::NanConfigRequestSupplemental& msg2,
+                                   enableRequest_1_4_cb hidl_status_cb) override;
+    Return<void> configRequest_1_5(uint16_t cmd_id, const V1_4::NanConfigRequest& msg1,
+                                   const V1_5::NanConfigRequestSupplemental& msg2,
+                                   configRequest_1_4_cb hidl_status_cb) override;
+    Return<void> getCapabilitiesRequest_1_5(uint16_t cmd_id,
+                                            getCapabilitiesRequest_cb hidl_status_cb) override;
+
+  private:
+    // Corresponding worker functions for the HIDL methods.
+    std::pair<WifiStatus, std::string> getNameInternal();
+    std::pair<WifiStatus, IfaceType> getTypeInternal();
+    WifiStatus registerEventCallbackInternal(const sp<V1_0::IWifiNanIfaceEventCallback>& callback);
+    WifiStatus getCapabilitiesRequestInternal(uint16_t cmd_id);
+    WifiStatus enableRequestInternal(uint16_t cmd_id, const V1_0::NanEnableRequest& msg);
+    WifiStatus configRequestInternal(uint16_t cmd_id, const V1_0::NanConfigRequest& msg);
+    WifiStatus disableRequestInternal(uint16_t cmd_id);
+    WifiStatus startPublishRequestInternal(uint16_t cmd_id, const NanPublishRequest& msg);
+    WifiStatus stopPublishRequestInternal(uint16_t cmd_id, uint8_t sessionId);
+    WifiStatus startSubscribeRequestInternal(uint16_t cmd_id, const NanSubscribeRequest& msg);
+    WifiStatus stopSubscribeRequestInternal(uint16_t cmd_id, uint8_t sessionId);
+    WifiStatus transmitFollowupRequestInternal(uint16_t cmd_id,
+                                               const NanTransmitFollowupRequest& msg);
+    WifiStatus createDataInterfaceRequestInternal(uint16_t cmd_id, const std::string& iface_name);
+    WifiStatus deleteDataInterfaceRequestInternal(uint16_t cmd_id, const std::string& iface_name);
+    WifiStatus initiateDataPathRequestInternal(uint16_t cmd_id,
+                                               const NanInitiateDataPathRequest& msg);
+    WifiStatus respondToDataPathIndicationRequestInternal(
+            uint16_t cmd_id, const NanRespondToDataPathIndicationRequest& msg);
+    WifiStatus terminateDataPathRequestInternal(uint16_t cmd_id, uint32_t ndpInstanceId);
+
+    WifiStatus registerEventCallback_1_2Internal(
+            const sp<V1_2::IWifiNanIfaceEventCallback>& callback);
+    WifiStatus enableRequest_1_2Internal(uint16_t cmd_id, const V1_0::NanEnableRequest& msg1,
+                                         const V1_2::NanConfigRequestSupplemental& msg2);
+    WifiStatus configRequest_1_2Internal(uint16_t cmd_id, const V1_0::NanConfigRequest& msg,
+                                         const V1_2::NanConfigRequestSupplemental& msg2);
+    WifiStatus enableRequest_1_4Internal(uint16_t cmd_id, const V1_4::NanEnableRequest& msg1,
+                                         const V1_2::NanConfigRequestSupplemental& msg2);
+    WifiStatus configRequest_1_4Internal(uint16_t cmd_id, const V1_4::NanConfigRequest& msg,
+                                         const V1_2::NanConfigRequestSupplemental& msg2);
+    WifiStatus registerEventCallback_1_5Internal(
+            const sp<V1_5::IWifiNanIfaceEventCallback>& callback);
+    WifiStatus enableRequest_1_5Internal(uint16_t cmd_id, const V1_4::NanEnableRequest& msg1,
+                                         const V1_5::NanConfigRequestSupplemental& msg2);
+    WifiStatus configRequest_1_5Internal(uint16_t cmd_id, const V1_4::NanConfigRequest& msg,
+                                         const V1_5::NanConfigRequestSupplemental& msg2);
+    WifiStatus getCapabilitiesRequest_1_5Internal(uint16_t cmd_id);
+
+    // all 1_0 and descendant callbacks
+    std::set<sp<V1_0::IWifiNanIfaceEventCallback>> getEventCallbacks();
+    // all 1_2 and descendant callbacks
+    std::set<sp<V1_2::IWifiNanIfaceEventCallback>> getEventCallbacks_1_2();
+    // all 1_5 and descendant callbacks
+    std::set<sp<V1_5::IWifiNanIfaceEventCallback>> getEventCallbacks_1_5();
+
+    std::string ifname_;
+    bool is_dedicated_iface_;
+    std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
+    std::weak_ptr<iface_util::WifiIfaceUtil> iface_util_;
+    bool is_valid_;
+    hidl_callback_util::HidlCallbackHandler<V1_0::IWifiNanIfaceEventCallback> event_cb_handler_;
+    hidl_callback_util::HidlCallbackHandler<V1_2::IWifiNanIfaceEventCallback> event_cb_handler_1_2_;
+    hidl_callback_util::HidlCallbackHandler<V1_5::IWifiNanIfaceEventCallback> event_cb_handler_1_5_;
+
+    DISALLOW_COPY_AND_ASSIGN(WifiNanIface);
+};
+
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // WIFI_NAN_IFACE_H_
diff --git a/wifi/1.6/default/wifi_p2p_iface.cpp b/wifi/1.6/default/wifi_p2p_iface.cpp
new file mode 100644
index 0000000..d4b1fca
--- /dev/null
+++ b/wifi/1.6/default/wifi_p2p_iface.cpp
@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+
+#include "hidl_return_util.h"
+#include "wifi_p2p_iface.h"
+#include "wifi_status_util.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+using hidl_return_util::validateAndCall;
+
+WifiP2pIface::WifiP2pIface(const std::string& ifname,
+                           const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal)
+    : ifname_(ifname), legacy_hal_(legacy_hal), is_valid_(true) {}
+
+void WifiP2pIface::invalidate() {
+    legacy_hal_.reset();
+    is_valid_ = false;
+}
+
+bool WifiP2pIface::isValid() {
+    return is_valid_;
+}
+
+std::string WifiP2pIface::getName() {
+    return ifname_;
+}
+
+Return<void> WifiP2pIface::getName(getName_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiP2pIface::getNameInternal, hidl_status_cb);
+}
+
+Return<void> WifiP2pIface::getType(getType_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiP2pIface::getTypeInternal, hidl_status_cb);
+}
+
+std::pair<WifiStatus, std::string> WifiP2pIface::getNameInternal() {
+    return {createWifiStatus(WifiStatusCode::SUCCESS), ifname_};
+}
+
+std::pair<WifiStatus, IfaceType> WifiP2pIface::getTypeInternal() {
+    return {createWifiStatus(WifiStatusCode::SUCCESS), IfaceType::P2P};
+}
+
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.6/default/wifi_p2p_iface.h b/wifi/1.6/default/wifi_p2p_iface.h
new file mode 100644
index 0000000..0089443
--- /dev/null
+++ b/wifi/1.6/default/wifi_p2p_iface.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef WIFI_P2P_IFACE_H_
+#define WIFI_P2P_IFACE_H_
+
+#include <android-base/macros.h>
+#include <android/hardware/wifi/1.0/IWifiP2pIface.h>
+
+#include "wifi_legacy_hal.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+using namespace android::hardware::wifi::V1_0;
+
+/**
+ * HIDL interface object used to control a P2P Iface instance.
+ */
+class WifiP2pIface : public V1_0::IWifiP2pIface {
+  public:
+    WifiP2pIface(const std::string& ifname,
+                 const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal);
+    // Refer to |WifiChip::invalidate()|.
+    void invalidate();
+    bool isValid();
+    std::string getName();
+
+    // HIDL methods exposed.
+    Return<void> getName(getName_cb hidl_status_cb) override;
+    Return<void> getType(getType_cb hidl_status_cb) override;
+
+  private:
+    // Corresponding worker functions for the HIDL methods.
+    std::pair<WifiStatus, std::string> getNameInternal();
+    std::pair<WifiStatus, IfaceType> getTypeInternal();
+
+    std::string ifname_;
+    std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
+    bool is_valid_;
+
+    DISALLOW_COPY_AND_ASSIGN(WifiP2pIface);
+};
+
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // WIFI_P2P_IFACE_H_
diff --git a/wifi/1.6/default/wifi_rtt_controller.cpp b/wifi/1.6/default/wifi_rtt_controller.cpp
new file mode 100644
index 0000000..f5e1d5a
--- /dev/null
+++ b/wifi/1.6/default/wifi_rtt_controller.cpp
@@ -0,0 +1,311 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+
+#include "hidl_return_util.h"
+#include "hidl_struct_util.h"
+#include "wifi_rtt_controller.h"
+#include "wifi_status_util.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+using hidl_return_util::validateAndCall;
+
+WifiRttController::WifiRttController(const std::string& iface_name,
+                                     const sp<IWifiIface>& bound_iface,
+                                     const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal)
+    : ifname_(iface_name), bound_iface_(bound_iface), legacy_hal_(legacy_hal), is_valid_(true) {}
+
+void WifiRttController::invalidate() {
+    legacy_hal_.reset();
+    event_callbacks_.clear();
+    is_valid_ = false;
+}
+
+bool WifiRttController::isValid() {
+    return is_valid_;
+}
+
+std::vector<sp<V1_4::IWifiRttControllerEventCallback>> WifiRttController::getEventCallbacks() {
+    return event_callbacks_;
+}
+
+std::string WifiRttController::getIfaceName() {
+    return ifname_;
+}
+
+Return<void> WifiRttController::getBoundIface(getBoundIface_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+                           &WifiRttController::getBoundIfaceInternal, hidl_status_cb);
+}
+
+Return<void> WifiRttController::registerEventCallback(
+        const sp<V1_0::IWifiRttControllerEventCallback>& callback,
+        registerEventCallback_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+                           &WifiRttController::registerEventCallbackInternal, hidl_status_cb,
+                           callback);
+}
+
+Return<void> WifiRttController::rangeRequest(uint32_t cmd_id,
+                                             const hidl_vec<V1_0::RttConfig>& rtt_configs,
+                                             rangeRequest_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+                           &WifiRttController::rangeRequestInternal, hidl_status_cb, cmd_id,
+                           rtt_configs);
+}
+
+Return<void> WifiRttController::rangeCancel(uint32_t cmd_id,
+                                            const hidl_vec<hidl_array<uint8_t, 6>>& addrs,
+                                            rangeCancel_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+                           &WifiRttController::rangeCancelInternal, hidl_status_cb, cmd_id, addrs);
+}
+
+Return<void> WifiRttController::getCapabilities(getCapabilities_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+                           &WifiRttController::getCapabilitiesInternal, hidl_status_cb);
+}
+
+Return<void> WifiRttController::setLci(uint32_t cmd_id, const RttLciInformation& lci,
+                                       setLci_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+                           &WifiRttController::setLciInternal, hidl_status_cb, cmd_id, lci);
+}
+
+Return<void> WifiRttController::setLcr(uint32_t cmd_id, const RttLcrInformation& lcr,
+                                       setLcr_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+                           &WifiRttController::setLcrInternal, hidl_status_cb, cmd_id, lcr);
+}
+
+Return<void> WifiRttController::getResponderInfo(getResponderInfo_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+                           &WifiRttController::getResponderInfoInternal, hidl_status_cb);
+}
+
+Return<void> WifiRttController::enableResponder(uint32_t cmd_id,
+                                                const WifiChannelInfo& channel_hint,
+                                                uint32_t max_duration_seconds,
+                                                const V1_0::RttResponder& info,
+                                                enableResponder_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+                           &WifiRttController::enableResponderInternal, hidl_status_cb, cmd_id,
+                           channel_hint, max_duration_seconds, info);
+}
+
+Return<void> WifiRttController::disableResponder(uint32_t cmd_id,
+                                                 disableResponder_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+                           &WifiRttController::disableResponderInternal, hidl_status_cb, cmd_id);
+}
+
+Return<void> WifiRttController::registerEventCallback_1_4(
+        const sp<V1_4::IWifiRttControllerEventCallback>& callback,
+        registerEventCallback_1_4_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+                           &WifiRttController::registerEventCallbackInternal_1_4, hidl_status_cb,
+                           callback);
+}
+
+Return<void> WifiRttController::rangeRequest_1_4(uint32_t cmd_id,
+                                                 const hidl_vec<V1_4::RttConfig>& rtt_configs,
+                                                 rangeRequest_1_4_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+                           &WifiRttController::rangeRequestInternal_1_4, hidl_status_cb, cmd_id,
+                           rtt_configs);
+}
+
+Return<void> WifiRttController::getCapabilities_1_4(getCapabilities_1_4_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+                           &WifiRttController::getCapabilitiesInternal_1_4, hidl_status_cb);
+}
+
+Return<void> WifiRttController::getResponderInfo_1_4(getResponderInfo_1_4_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+                           &WifiRttController::getResponderInfoInternal_1_4, hidl_status_cb);
+}
+
+Return<void> WifiRttController::enableResponder_1_4(uint32_t cmd_id,
+                                                    const WifiChannelInfo& channel_hint,
+                                                    uint32_t max_duration_seconds,
+                                                    const V1_4::RttResponder& info,
+                                                    enableResponder_1_4_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+                           &WifiRttController::enableResponderInternal_1_4, hidl_status_cb, cmd_id,
+                           channel_hint, max_duration_seconds, info);
+}
+
+std::pair<WifiStatus, sp<IWifiIface>> WifiRttController::getBoundIfaceInternal() {
+    return {createWifiStatus(WifiStatusCode::SUCCESS), bound_iface_};
+}
+
+WifiStatus WifiRttController::registerEventCallbackInternal(
+        const sp<V1_0::IWifiRttControllerEventCallback>& /* callback */) {
+    // Deprecated support for this api
+    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
+}
+
+WifiStatus WifiRttController::rangeRequestInternal(
+        uint32_t /* cmd_id */, const std::vector<V1_0::RttConfig>& /* rtt_configs */) {
+    // Deprecated support for this api
+    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
+}
+
+WifiStatus WifiRttController::rangeCancelInternal(
+        uint32_t cmd_id, const std::vector<hidl_array<uint8_t, 6>>& addrs) {
+    std::vector<std::array<uint8_t, 6>> legacy_addrs;
+    for (const auto& addr : addrs) {
+        legacy_addrs.push_back(addr);
+    }
+    legacy_hal::wifi_error legacy_status =
+            legacy_hal_.lock()->cancelRttRangeRequest(ifname_, cmd_id, legacy_addrs);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+std::pair<WifiStatus, V1_0::RttCapabilities> WifiRttController::getCapabilitiesInternal() {
+    // Deprecated support for this api
+    return {createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED), {}};
+}
+
+WifiStatus WifiRttController::setLciInternal(uint32_t cmd_id, const RttLciInformation& lci) {
+    legacy_hal::wifi_lci_information legacy_lci;
+    if (!hidl_struct_util::convertHidlRttLciInformationToLegacy(lci, &legacy_lci)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    legacy_hal::wifi_error legacy_status =
+            legacy_hal_.lock()->setRttLci(ifname_, cmd_id, legacy_lci);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiRttController::setLcrInternal(uint32_t cmd_id, const RttLcrInformation& lcr) {
+    legacy_hal::wifi_lcr_information legacy_lcr;
+    if (!hidl_struct_util::convertHidlRttLcrInformationToLegacy(lcr, &legacy_lcr)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    legacy_hal::wifi_error legacy_status =
+            legacy_hal_.lock()->setRttLcr(ifname_, cmd_id, legacy_lcr);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+std::pair<WifiStatus, V1_0::RttResponder> WifiRttController::getResponderInfoInternal() {
+    // Deprecated support for this api
+    return {createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED), {}};
+}
+
+WifiStatus WifiRttController::enableResponderInternal(uint32_t /* cmd_id */,
+                                                      const WifiChannelInfo& /* channel_hint */,
+                                                      uint32_t /* max_duration_seconds */,
+                                                      const V1_0::RttResponder& /* info */) {
+    // Deprecated support for this api
+    return {createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED)};
+}
+
+WifiStatus WifiRttController::disableResponderInternal(uint32_t cmd_id) {
+    legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->disableRttResponder(ifname_, cmd_id);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiRttController::registerEventCallbackInternal_1_4(
+        const sp<V1_4::IWifiRttControllerEventCallback>& callback) {
+    // TODO(b/31632518): remove the callback when the client is destroyed
+    event_callbacks_.emplace_back(callback);
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+WifiStatus WifiRttController::rangeRequestInternal_1_4(
+        uint32_t cmd_id, const std::vector<V1_4::RttConfig>& rtt_configs) {
+    std::vector<legacy_hal::wifi_rtt_config> legacy_configs;
+    if (!hidl_struct_util::convertHidlVectorOfRttConfigToLegacy(rtt_configs, &legacy_configs)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    android::wp<WifiRttController> weak_ptr_this(this);
+    const auto& on_results_callback =
+            [weak_ptr_this](legacy_hal::wifi_request_id id,
+                            const std::vector<const legacy_hal::wifi_rtt_result*>& results) {
+                const auto shared_ptr_this = weak_ptr_this.promote();
+                if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                    LOG(ERROR) << "Callback invoked on an invalid object";
+                    return;
+                }
+                std::vector<V1_4::RttResult> hidl_results;
+                if (!hidl_struct_util::convertLegacyVectorOfRttResultToHidl(results,
+                                                                            &hidl_results)) {
+                    LOG(ERROR) << "Failed to convert rtt results to HIDL structs";
+                    return;
+                }
+                for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                    callback->onResults_1_4(id, hidl_results);
+                }
+            };
+    legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->startRttRangeRequest(
+            ifname_, cmd_id, legacy_configs, on_results_callback);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+std::pair<WifiStatus, V1_4::RttCapabilities> WifiRttController::getCapabilitiesInternal_1_4() {
+    legacy_hal::wifi_error legacy_status;
+    legacy_hal::wifi_rtt_capabilities legacy_caps;
+    std::tie(legacy_status, legacy_caps) = legacy_hal_.lock()->getRttCapabilities(ifname_);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        return {createWifiStatusFromLegacyError(legacy_status), {}};
+    }
+    V1_4::RttCapabilities hidl_caps;
+    if (!hidl_struct_util::convertLegacyRttCapabilitiesToHidl(legacy_caps, &hidl_caps)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
+}
+
+std::pair<WifiStatus, V1_4::RttResponder> WifiRttController::getResponderInfoInternal_1_4() {
+    legacy_hal::wifi_error legacy_status;
+    legacy_hal::wifi_rtt_responder legacy_responder;
+    std::tie(legacy_status, legacy_responder) = legacy_hal_.lock()->getRttResponderInfo(ifname_);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        return {createWifiStatusFromLegacyError(legacy_status), {}};
+    }
+    V1_4::RttResponder hidl_responder;
+    if (!hidl_struct_util::convertLegacyRttResponderToHidl(legacy_responder, &hidl_responder)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_responder};
+}
+
+WifiStatus WifiRttController::enableResponderInternal_1_4(uint32_t cmd_id,
+                                                          const WifiChannelInfo& channel_hint,
+                                                          uint32_t max_duration_seconds,
+                                                          const V1_4::RttResponder& info) {
+    legacy_hal::wifi_channel_info legacy_channel_info;
+    if (!hidl_struct_util::convertHidlWifiChannelInfoToLegacy(channel_hint, &legacy_channel_info)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    legacy_hal::wifi_rtt_responder legacy_responder;
+    if (!hidl_struct_util::convertHidlRttResponderToLegacy(info, &legacy_responder)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->enableRttResponder(
+            ifname_, cmd_id, legacy_channel_info, max_duration_seconds, legacy_responder);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.6/default/wifi_rtt_controller.h b/wifi/1.6/default/wifi_rtt_controller.h
new file mode 100644
index 0000000..b4a2116
--- /dev/null
+++ b/wifi/1.6/default/wifi_rtt_controller.h
@@ -0,0 +1,117 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef WIFI_RTT_CONTROLLER_H_
+#define WIFI_RTT_CONTROLLER_H_
+
+#include <android-base/macros.h>
+#include <android/hardware/wifi/1.0/IWifiIface.h>
+#include <android/hardware/wifi/1.4/IWifiRttController.h>
+#include <android/hardware/wifi/1.4/IWifiRttControllerEventCallback.h>
+
+#include "wifi_legacy_hal.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+
+/**
+ * HIDL interface object used to control all RTT operations.
+ */
+class WifiRttController : public V1_4::IWifiRttController {
+  public:
+    WifiRttController(const std::string& iface_name, const sp<IWifiIface>& bound_iface,
+                      const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal);
+    // Refer to |WifiChip::invalidate()|.
+    void invalidate();
+    bool isValid();
+    std::vector<sp<V1_4::IWifiRttControllerEventCallback>> getEventCallbacks();
+    std::string getIfaceName();
+
+    // HIDL methods exposed.
+    Return<void> getBoundIface(getBoundIface_cb hidl_status_cb) override;
+    Return<void> registerEventCallback(const sp<V1_0::IWifiRttControllerEventCallback>& callback,
+                                       registerEventCallback_cb hidl_status_cb) override;
+    Return<void> rangeRequest(uint32_t cmd_id, const hidl_vec<V1_0::RttConfig>& rtt_configs,
+                              rangeRequest_cb hidl_status_cb) override;
+    Return<void> rangeCancel(uint32_t cmd_id, const hidl_vec<hidl_array<uint8_t, 6>>& addrs,
+                             rangeCancel_cb hidl_status_cb) override;
+    Return<void> getCapabilities(getCapabilities_cb hidl_status_cb) override;
+    Return<void> setLci(uint32_t cmd_id, const RttLciInformation& lci,
+                        setLci_cb hidl_status_cb) override;
+    Return<void> setLcr(uint32_t cmd_id, const RttLcrInformation& lcr,
+                        setLcr_cb hidl_status_cb) override;
+    Return<void> getResponderInfo(getResponderInfo_cb hidl_status_cb) override;
+    Return<void> enableResponder(uint32_t cmd_id, const WifiChannelInfo& channel_hint,
+                                 uint32_t max_duration_seconds, const V1_0::RttResponder& info,
+                                 enableResponder_cb hidl_status_cb) override;
+    Return<void> disableResponder(uint32_t cmd_id, disableResponder_cb hidl_status_cb) override;
+    Return<void> registerEventCallback_1_4(
+            const sp<V1_4::IWifiRttControllerEventCallback>& callback,
+            registerEventCallback_1_4_cb hidl_status_cb) override;
+    Return<void> rangeRequest_1_4(uint32_t cmd_id, const hidl_vec<V1_4::RttConfig>& rtt_configs,
+                                  rangeRequest_1_4_cb hidl_status_cb) override;
+    Return<void> getCapabilities_1_4(getCapabilities_1_4_cb hidl_status_cb) override;
+    Return<void> getResponderInfo_1_4(getResponderInfo_1_4_cb hidl_status_cb) override;
+    Return<void> enableResponder_1_4(uint32_t cmd_id, const WifiChannelInfo& channel_hint,
+                                     uint32_t max_duration_seconds, const V1_4::RttResponder& info,
+                                     enableResponder_1_4_cb hidl_status_cb) override;
+
+  private:
+    // Corresponding worker functions for the HIDL methods.
+    std::pair<WifiStatus, sp<IWifiIface>> getBoundIfaceInternal();
+    WifiStatus registerEventCallbackInternal(
+            const sp<V1_0::IWifiRttControllerEventCallback>& callback);
+    WifiStatus rangeRequestInternal(uint32_t cmd_id,
+                                    const std::vector<V1_0::RttConfig>& rtt_configs);
+    WifiStatus rangeCancelInternal(uint32_t cmd_id,
+                                   const std::vector<hidl_array<uint8_t, 6>>& addrs);
+    std::pair<WifiStatus, V1_0::RttCapabilities> getCapabilitiesInternal();
+    WifiStatus setLciInternal(uint32_t cmd_id, const RttLciInformation& lci);
+    WifiStatus setLcrInternal(uint32_t cmd_id, const RttLcrInformation& lcr);
+    std::pair<WifiStatus, V1_0::RttResponder> getResponderInfoInternal();
+    WifiStatus enableResponderInternal(uint32_t cmd_id, const WifiChannelInfo& channel_hint,
+                                       uint32_t max_duration_seconds,
+                                       const V1_0::RttResponder& info);
+    WifiStatus disableResponderInternal(uint32_t cmd_id);
+    WifiStatus registerEventCallbackInternal_1_4(
+            const sp<V1_4::IWifiRttControllerEventCallback>& callback);
+    WifiStatus rangeRequestInternal_1_4(uint32_t cmd_id,
+                                        const std::vector<V1_4::RttConfig>& rtt_configs);
+    std::pair<WifiStatus, V1_4::RttCapabilities> getCapabilitiesInternal_1_4();
+    std::pair<WifiStatus, V1_4::RttResponder> getResponderInfoInternal_1_4();
+    WifiStatus enableResponderInternal_1_4(uint32_t cmd_id, const WifiChannelInfo& channel_hint,
+                                           uint32_t max_duration_seconds,
+                                           const V1_4::RttResponder& info);
+
+    std::string ifname_;
+    sp<IWifiIface> bound_iface_;
+    std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
+    std::vector<sp<V1_4::IWifiRttControllerEventCallback>> event_callbacks_;
+    bool is_valid_;
+
+    DISALLOW_COPY_AND_ASSIGN(WifiRttController);
+};
+
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // WIFI_RTT_CONTROLLER_H_
diff --git a/wifi/1.6/default/wifi_sta_iface.cpp b/wifi/1.6/default/wifi_sta_iface.cpp
new file mode 100644
index 0000000..f852d36
--- /dev/null
+++ b/wifi/1.6/default/wifi_sta_iface.cpp
@@ -0,0 +1,583 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+
+#include "hidl_return_util.h"
+#include "hidl_struct_util.h"
+#include "wifi_sta_iface.h"
+#include "wifi_status_util.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+using hidl_return_util::validateAndCall;
+
+WifiStaIface::WifiStaIface(const std::string& ifname,
+                           const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
+                           const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util)
+    : ifname_(ifname), legacy_hal_(legacy_hal), iface_util_(iface_util), is_valid_(true) {
+    // Turn on DFS channel usage for STA iface.
+    legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->setDfsFlag(ifname_, true);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        LOG(ERROR) << "Failed to set DFS flag; DFS channels may be unavailable.";
+    }
+}
+
+void WifiStaIface::invalidate() {
+    legacy_hal_.reset();
+    event_cb_handler_.invalidate();
+    is_valid_ = false;
+}
+
+bool WifiStaIface::isValid() {
+    return is_valid_;
+}
+
+std::string WifiStaIface::getName() {
+    return ifname_;
+}
+
+std::set<sp<IWifiStaIfaceEventCallback>> WifiStaIface::getEventCallbacks() {
+    return event_cb_handler_.getCallbacks();
+}
+
+Return<void> WifiStaIface::getName(getName_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::getNameInternal, hidl_status_cb);
+}
+
+Return<void> WifiStaIface::getType(getType_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::getTypeInternal, hidl_status_cb);
+}
+
+Return<void> WifiStaIface::registerEventCallback(const sp<IWifiStaIfaceEventCallback>& callback,
+                                                 registerEventCallback_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::registerEventCallbackInternal, hidl_status_cb, callback);
+}
+
+Return<void> WifiStaIface::getCapabilities(getCapabilities_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::getCapabilitiesInternal, hidl_status_cb);
+}
+
+Return<void> WifiStaIface::getApfPacketFilterCapabilities(
+        getApfPacketFilterCapabilities_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::getApfPacketFilterCapabilitiesInternal, hidl_status_cb);
+}
+
+Return<void> WifiStaIface::installApfPacketFilter(uint32_t cmd_id, const hidl_vec<uint8_t>& program,
+                                                  installApfPacketFilter_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::installApfPacketFilterInternal, hidl_status_cb, cmd_id,
+                           program);
+}
+
+Return<void> WifiStaIface::readApfPacketFilterData(readApfPacketFilterData_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::readApfPacketFilterDataInternal, hidl_status_cb);
+}
+
+Return<void> WifiStaIface::getBackgroundScanCapabilities(
+        getBackgroundScanCapabilities_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::getBackgroundScanCapabilitiesInternal, hidl_status_cb);
+}
+
+Return<void> WifiStaIface::getValidFrequenciesForBand(
+        V1_0::WifiBand band, getValidFrequenciesForBand_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::getValidFrequenciesForBandInternal, hidl_status_cb, band);
+}
+
+Return<void> WifiStaIface::startBackgroundScan(uint32_t cmd_id,
+                                               const StaBackgroundScanParameters& params,
+                                               startBackgroundScan_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::startBackgroundScanInternal, hidl_status_cb, cmd_id,
+                           params);
+}
+
+Return<void> WifiStaIface::stopBackgroundScan(uint32_t cmd_id,
+                                              stopBackgroundScan_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::stopBackgroundScanInternal, hidl_status_cb, cmd_id);
+}
+
+Return<void> WifiStaIface::enableLinkLayerStatsCollection(
+        bool debug, enableLinkLayerStatsCollection_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::enableLinkLayerStatsCollectionInternal, hidl_status_cb,
+                           debug);
+}
+
+Return<void> WifiStaIface::disableLinkLayerStatsCollection(
+        disableLinkLayerStatsCollection_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::disableLinkLayerStatsCollectionInternal, hidl_status_cb);
+}
+
+Return<void> WifiStaIface::getLinkLayerStats(getLinkLayerStats_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::getLinkLayerStatsInternal, hidl_status_cb);
+}
+
+Return<void> WifiStaIface::getLinkLayerStats_1_3(getLinkLayerStats_1_3_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::getLinkLayerStatsInternal_1_3, hidl_status_cb);
+}
+
+Return<void> WifiStaIface::getLinkLayerStats_1_5(getLinkLayerStats_1_5_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::getLinkLayerStatsInternal_1_5, hidl_status_cb);
+}
+
+Return<void> WifiStaIface::startRssiMonitoring(uint32_t cmd_id, int32_t max_rssi, int32_t min_rssi,
+                                               startRssiMonitoring_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::startRssiMonitoringInternal, hidl_status_cb, cmd_id,
+                           max_rssi, min_rssi);
+}
+
+Return<void> WifiStaIface::stopRssiMonitoring(uint32_t cmd_id,
+                                              stopRssiMonitoring_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::stopRssiMonitoringInternal, hidl_status_cb, cmd_id);
+}
+
+Return<void> WifiStaIface::getRoamingCapabilities(getRoamingCapabilities_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::getRoamingCapabilitiesInternal, hidl_status_cb);
+}
+
+Return<void> WifiStaIface::configureRoaming(const StaRoamingConfig& config,
+                                            configureRoaming_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::configureRoamingInternal, hidl_status_cb, config);
+}
+
+Return<void> WifiStaIface::setRoamingState(StaRoamingState state,
+                                           setRoamingState_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::setRoamingStateInternal, hidl_status_cb, state);
+}
+
+Return<void> WifiStaIface::enableNdOffload(bool enable, enableNdOffload_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::enableNdOffloadInternal, hidl_status_cb, enable);
+}
+
+Return<void> WifiStaIface::startSendingKeepAlivePackets(
+        uint32_t cmd_id, const hidl_vec<uint8_t>& ip_packet_data, uint16_t ether_type,
+        const hidl_array<uint8_t, 6>& src_address, const hidl_array<uint8_t, 6>& dst_address,
+        uint32_t period_in_ms, startSendingKeepAlivePackets_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::startSendingKeepAlivePacketsInternal, hidl_status_cb,
+                           cmd_id, ip_packet_data, ether_type, src_address, dst_address,
+                           period_in_ms);
+}
+
+Return<void> WifiStaIface::stopSendingKeepAlivePackets(
+        uint32_t cmd_id, stopSendingKeepAlivePackets_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::stopSendingKeepAlivePacketsInternal, hidl_status_cb,
+                           cmd_id);
+}
+
+Return<void> WifiStaIface::setScanningMacOui(const hidl_array<uint8_t, 3>& oui,
+                                             setScanningMacOui_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::setScanningMacOuiInternal, hidl_status_cb, oui);
+}
+
+Return<void> WifiStaIface::startDebugPacketFateMonitoring(
+        startDebugPacketFateMonitoring_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::startDebugPacketFateMonitoringInternal, hidl_status_cb);
+}
+
+Return<void> WifiStaIface::getDebugTxPacketFates(getDebugTxPacketFates_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::getDebugTxPacketFatesInternal, hidl_status_cb);
+}
+
+Return<void> WifiStaIface::getDebugRxPacketFates(getDebugRxPacketFates_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::getDebugRxPacketFatesInternal, hidl_status_cb);
+}
+
+Return<void> WifiStaIface::setMacAddress(const hidl_array<uint8_t, 6>& mac,
+                                         setMacAddress_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::setMacAddressInternal, hidl_status_cb, mac);
+}
+
+Return<void> WifiStaIface::getFactoryMacAddress(getFactoryMacAddress_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::getFactoryMacAddressInternal, hidl_status_cb);
+}
+
+Return<void> WifiStaIface::setScanMode(bool enable, setScanMode_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::setScanModeInternal, hidl_status_cb, enable);
+}
+
+std::pair<WifiStatus, std::string> WifiStaIface::getNameInternal() {
+    return {createWifiStatus(WifiStatusCode::SUCCESS), ifname_};
+}
+
+std::pair<WifiStatus, IfaceType> WifiStaIface::getTypeInternal() {
+    return {createWifiStatus(WifiStatusCode::SUCCESS), IfaceType::STA};
+}
+
+WifiStatus WifiStaIface::registerEventCallbackInternal(
+        const sp<IWifiStaIfaceEventCallback>& callback) {
+    if (!event_cb_handler_.addCallback(callback)) {
+        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+    }
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+std::pair<WifiStatus, uint32_t> WifiStaIface::getCapabilitiesInternal() {
+    legacy_hal::wifi_error legacy_status;
+    uint64_t legacy_feature_set;
+    std::tie(legacy_status, legacy_feature_set) =
+            legacy_hal_.lock()->getSupportedFeatureSet(ifname_);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        return {createWifiStatusFromLegacyError(legacy_status), 0};
+    }
+    uint32_t legacy_logger_feature_set;
+    std::tie(legacy_status, legacy_logger_feature_set) =
+            legacy_hal_.lock()->getLoggerSupportedFeatureSet(ifname_);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        // some devices don't support querying logger feature set
+        legacy_logger_feature_set = 0;
+    }
+    uint32_t hidl_caps;
+    if (!hidl_struct_util::convertLegacyFeaturesToHidlStaCapabilities(
+                legacy_feature_set, legacy_logger_feature_set, &hidl_caps)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), 0};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
+}
+
+std::pair<WifiStatus, StaApfPacketFilterCapabilities>
+WifiStaIface::getApfPacketFilterCapabilitiesInternal() {
+    legacy_hal::wifi_error legacy_status;
+    legacy_hal::PacketFilterCapabilities legacy_caps;
+    std::tie(legacy_status, legacy_caps) = legacy_hal_.lock()->getPacketFilterCapabilities(ifname_);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        return {createWifiStatusFromLegacyError(legacy_status), {}};
+    }
+    StaApfPacketFilterCapabilities hidl_caps;
+    if (!hidl_struct_util::convertLegacyApfCapabilitiesToHidl(legacy_caps, &hidl_caps)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
+}
+
+WifiStatus WifiStaIface::installApfPacketFilterInternal(uint32_t /* cmd_id */,
+                                                        const std::vector<uint8_t>& program) {
+    legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->setPacketFilter(ifname_, program);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+std::pair<WifiStatus, std::vector<uint8_t>> WifiStaIface::readApfPacketFilterDataInternal() {
+    const std::pair<legacy_hal::wifi_error, std::vector<uint8_t>> legacy_status_and_data =
+            legacy_hal_.lock()->readApfPacketFilterData(ifname_);
+    return {createWifiStatusFromLegacyError(legacy_status_and_data.first),
+            std::move(legacy_status_and_data.second)};
+}
+
+std::pair<WifiStatus, StaBackgroundScanCapabilities>
+WifiStaIface::getBackgroundScanCapabilitiesInternal() {
+    legacy_hal::wifi_error legacy_status;
+    legacy_hal::wifi_gscan_capabilities legacy_caps;
+    std::tie(legacy_status, legacy_caps) = legacy_hal_.lock()->getGscanCapabilities(ifname_);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        return {createWifiStatusFromLegacyError(legacy_status), {}};
+    }
+    StaBackgroundScanCapabilities hidl_caps;
+    if (!hidl_struct_util::convertLegacyGscanCapabilitiesToHidl(legacy_caps, &hidl_caps)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
+}
+
+std::pair<WifiStatus, std::vector<WifiChannelInMhz>>
+WifiStaIface::getValidFrequenciesForBandInternal(V1_0::WifiBand band) {
+    static_assert(sizeof(WifiChannelInMhz) == sizeof(uint32_t), "Size mismatch");
+    legacy_hal::wifi_error legacy_status;
+    std::vector<uint32_t> valid_frequencies;
+    std::tie(legacy_status, valid_frequencies) = legacy_hal_.lock()->getValidFrequenciesForBand(
+            ifname_, hidl_struct_util::convertHidlWifiBandToLegacy(band));
+    return {createWifiStatusFromLegacyError(legacy_status), valid_frequencies};
+}
+
+WifiStatus WifiStaIface::startBackgroundScanInternal(uint32_t cmd_id,
+                                                     const StaBackgroundScanParameters& params) {
+    legacy_hal::wifi_scan_cmd_params legacy_params;
+    if (!hidl_struct_util::convertHidlGscanParamsToLegacy(params, &legacy_params)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    android::wp<WifiStaIface> weak_ptr_this(this);
+    const auto& on_failure_callback = [weak_ptr_this](legacy_hal::wifi_request_id id) {
+        const auto shared_ptr_this = weak_ptr_this.promote();
+        if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+            LOG(ERROR) << "Callback invoked on an invalid object";
+            return;
+        }
+        for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+            if (!callback->onBackgroundScanFailure(id).isOk()) {
+                LOG(ERROR) << "Failed to invoke onBackgroundScanFailure callback";
+            }
+        }
+    };
+    const auto& on_results_callback =
+            [weak_ptr_this](legacy_hal::wifi_request_id id,
+                            const std::vector<legacy_hal::wifi_cached_scan_results>& results) {
+                const auto shared_ptr_this = weak_ptr_this.promote();
+                if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                    LOG(ERROR) << "Callback invoked on an invalid object";
+                    return;
+                }
+                std::vector<StaScanData> hidl_scan_datas;
+                if (!hidl_struct_util::convertLegacyVectorOfCachedGscanResultsToHidl(
+                            results, &hidl_scan_datas)) {
+                    LOG(ERROR) << "Failed to convert scan results to HIDL structs";
+                    return;
+                }
+                for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                    if (!callback->onBackgroundScanResults(id, hidl_scan_datas).isOk()) {
+                        LOG(ERROR) << "Failed to invoke onBackgroundScanResults callback";
+                    }
+                }
+            };
+    const auto& on_full_result_callback = [weak_ptr_this](
+                                                  legacy_hal::wifi_request_id id,
+                                                  const legacy_hal::wifi_scan_result* result,
+                                                  uint32_t buckets_scanned) {
+        const auto shared_ptr_this = weak_ptr_this.promote();
+        if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+            LOG(ERROR) << "Callback invoked on an invalid object";
+            return;
+        }
+        StaScanResult hidl_scan_result;
+        if (!hidl_struct_util::convertLegacyGscanResultToHidl(*result, true, &hidl_scan_result)) {
+            LOG(ERROR) << "Failed to convert full scan results to HIDL structs";
+            return;
+        }
+        for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+            if (!callback->onBackgroundFullScanResult(id, buckets_scanned, hidl_scan_result)
+                         .isOk()) {
+                LOG(ERROR) << "Failed to invoke onBackgroundFullScanResult callback";
+            }
+        }
+    };
+    legacy_hal::wifi_error legacy_status =
+            legacy_hal_.lock()->startGscan(ifname_, cmd_id, legacy_params, on_failure_callback,
+                                           on_results_callback, on_full_result_callback);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiStaIface::stopBackgroundScanInternal(uint32_t cmd_id) {
+    legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->stopGscan(ifname_, cmd_id);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiStaIface::enableLinkLayerStatsCollectionInternal(bool debug) {
+    legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->enableLinkLayerStats(ifname_, debug);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiStaIface::disableLinkLayerStatsCollectionInternal() {
+    legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->disableLinkLayerStats(ifname_);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+std::pair<WifiStatus, V1_0::StaLinkLayerStats> WifiStaIface::getLinkLayerStatsInternal() {
+    return {createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED), {}};
+}
+
+std::pair<WifiStatus, V1_3::StaLinkLayerStats> WifiStaIface::getLinkLayerStatsInternal_1_3() {
+    return {createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED), {}};
+}
+
+std::pair<WifiStatus, V1_5::StaLinkLayerStats> WifiStaIface::getLinkLayerStatsInternal_1_5() {
+    legacy_hal::wifi_error legacy_status;
+    legacy_hal::LinkLayerStats legacy_stats;
+    std::tie(legacy_status, legacy_stats) = legacy_hal_.lock()->getLinkLayerStats(ifname_);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        return {createWifiStatusFromLegacyError(legacy_status), {}};
+    }
+    V1_5::StaLinkLayerStats hidl_stats;
+    if (!hidl_struct_util::convertLegacyLinkLayerStatsToHidl(legacy_stats, &hidl_stats)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_stats};
+}
+
+WifiStatus WifiStaIface::startRssiMonitoringInternal(uint32_t cmd_id, int32_t max_rssi,
+                                                     int32_t min_rssi) {
+    android::wp<WifiStaIface> weak_ptr_this(this);
+    const auto& on_threshold_breached_callback = [weak_ptr_this](legacy_hal::wifi_request_id id,
+                                                                 std::array<uint8_t, 6> bssid,
+                                                                 int8_t rssi) {
+        const auto shared_ptr_this = weak_ptr_this.promote();
+        if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+            LOG(ERROR) << "Callback invoked on an invalid object";
+            return;
+        }
+        for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+            if (!callback->onRssiThresholdBreached(id, bssid, rssi).isOk()) {
+                LOG(ERROR) << "Failed to invoke onRssiThresholdBreached callback";
+            }
+        }
+    };
+    legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->startRssiMonitoring(
+            ifname_, cmd_id, max_rssi, min_rssi, on_threshold_breached_callback);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiStaIface::stopRssiMonitoringInternal(uint32_t cmd_id) {
+    legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->stopRssiMonitoring(ifname_, cmd_id);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+std::pair<WifiStatus, StaRoamingCapabilities> WifiStaIface::getRoamingCapabilitiesInternal() {
+    legacy_hal::wifi_error legacy_status;
+    legacy_hal::wifi_roaming_capabilities legacy_caps;
+    std::tie(legacy_status, legacy_caps) = legacy_hal_.lock()->getRoamingCapabilities(ifname_);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        return {createWifiStatusFromLegacyError(legacy_status), {}};
+    }
+    StaRoamingCapabilities hidl_caps;
+    if (!hidl_struct_util::convertLegacyRoamingCapabilitiesToHidl(legacy_caps, &hidl_caps)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
+}
+
+WifiStatus WifiStaIface::configureRoamingInternal(const StaRoamingConfig& config) {
+    legacy_hal::wifi_roaming_config legacy_config;
+    if (!hidl_struct_util::convertHidlRoamingConfigToLegacy(config, &legacy_config)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    legacy_hal::wifi_error legacy_status =
+            legacy_hal_.lock()->configureRoaming(ifname_, legacy_config);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiStaIface::setRoamingStateInternal(StaRoamingState state) {
+    legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->enableFirmwareRoaming(
+            ifname_, hidl_struct_util::convertHidlRoamingStateToLegacy(state));
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiStaIface::enableNdOffloadInternal(bool enable) {
+    legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->configureNdOffload(ifname_, enable);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiStaIface::startSendingKeepAlivePacketsInternal(
+        uint32_t cmd_id, const std::vector<uint8_t>& ip_packet_data, uint16_t ether_type,
+        const std::array<uint8_t, 6>& src_address, const std::array<uint8_t, 6>& dst_address,
+        uint32_t period_in_ms) {
+    legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->startSendingOffloadedPacket(
+            ifname_, cmd_id, ether_type, ip_packet_data, src_address, dst_address, period_in_ms);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiStaIface::stopSendingKeepAlivePacketsInternal(uint32_t cmd_id) {
+    legacy_hal::wifi_error legacy_status =
+            legacy_hal_.lock()->stopSendingOffloadedPacket(ifname_, cmd_id);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiStaIface::setScanningMacOuiInternal(const std::array<uint8_t, 3>& /* oui */) {
+    // deprecated.
+    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
+}
+
+WifiStatus WifiStaIface::startDebugPacketFateMonitoringInternal() {
+    legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->startPktFateMonitoring(ifname_);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+std::pair<WifiStatus, std::vector<WifiDebugTxPacketFateReport>>
+WifiStaIface::getDebugTxPacketFatesInternal() {
+    legacy_hal::wifi_error legacy_status;
+    std::vector<legacy_hal::wifi_tx_report> legacy_fates;
+    std::tie(legacy_status, legacy_fates) = legacy_hal_.lock()->getTxPktFates(ifname_);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        return {createWifiStatusFromLegacyError(legacy_status), {}};
+    }
+    std::vector<WifiDebugTxPacketFateReport> hidl_fates;
+    if (!hidl_struct_util::convertLegacyVectorOfDebugTxPacketFateToHidl(legacy_fates,
+                                                                        &hidl_fates)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_fates};
+}
+
+std::pair<WifiStatus, std::vector<WifiDebugRxPacketFateReport>>
+WifiStaIface::getDebugRxPacketFatesInternal() {
+    legacy_hal::wifi_error legacy_status;
+    std::vector<legacy_hal::wifi_rx_report> legacy_fates;
+    std::tie(legacy_status, legacy_fates) = legacy_hal_.lock()->getRxPktFates(ifname_);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        return {createWifiStatusFromLegacyError(legacy_status), {}};
+    }
+    std::vector<WifiDebugRxPacketFateReport> hidl_fates;
+    if (!hidl_struct_util::convertLegacyVectorOfDebugRxPacketFateToHidl(legacy_fates,
+                                                                        &hidl_fates)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_fates};
+}
+
+WifiStatus WifiStaIface::setMacAddressInternal(const std::array<uint8_t, 6>& mac) {
+    bool status = iface_util_.lock()->setMacAddress(ifname_, mac);
+    if (!status) {
+        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+    }
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+std::pair<WifiStatus, std::array<uint8_t, 6>> WifiStaIface::getFactoryMacAddressInternal() {
+    std::array<uint8_t, 6> mac = iface_util_.lock()->getFactoryMacAddress(ifname_);
+    if (mac[0] == 0 && mac[1] == 0 && mac[2] == 0 && mac[3] == 0 && mac[4] == 0 && mac[5] == 0) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), mac};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), mac};
+}
+
+WifiStatus WifiStaIface::setScanModeInternal(bool enable) {
+    // OEM's need to implement this on their devices if needed.
+    LOG(WARNING) << "setScanModeInternal(" << enable << ") not supported";
+    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
+}
+
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.6/default/wifi_sta_iface.h b/wifi/1.6/default/wifi_sta_iface.h
new file mode 100644
index 0000000..37358a5
--- /dev/null
+++ b/wifi/1.6/default/wifi_sta_iface.h
@@ -0,0 +1,155 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef WIFI_STA_IFACE_H_
+#define WIFI_STA_IFACE_H_
+
+#include <android-base/macros.h>
+#include <android/hardware/wifi/1.0/IWifiStaIfaceEventCallback.h>
+#include <android/hardware/wifi/1.5/IWifiStaIface.h>
+
+#include "hidl_callback_util.h"
+#include "wifi_iface_util.h"
+#include "wifi_legacy_hal.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+using namespace android::hardware::wifi::V1_0;
+
+/**
+ * HIDL interface object used to control a STA Iface instance.
+ */
+class WifiStaIface : public V1_5::IWifiStaIface {
+  public:
+    WifiStaIface(const std::string& ifname,
+                 const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
+                 const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util);
+    // Refer to |WifiChip::invalidate()|.
+    void invalidate();
+    bool isValid();
+    std::set<sp<IWifiStaIfaceEventCallback>> getEventCallbacks();
+    std::string getName();
+
+    // HIDL methods exposed.
+    Return<void> getName(getName_cb hidl_status_cb) override;
+    Return<void> getType(getType_cb hidl_status_cb) override;
+    Return<void> registerEventCallback(const sp<IWifiStaIfaceEventCallback>& callback,
+                                       registerEventCallback_cb hidl_status_cb) override;
+    Return<void> getCapabilities(getCapabilities_cb hidl_status_cb) override;
+    Return<void> getApfPacketFilterCapabilities(
+            getApfPacketFilterCapabilities_cb hidl_status_cb) override;
+    Return<void> installApfPacketFilter(uint32_t cmd_id, const hidl_vec<uint8_t>& program,
+                                        installApfPacketFilter_cb hidl_status_cb) override;
+    Return<void> readApfPacketFilterData(readApfPacketFilterData_cb hidl_status_cb) override;
+    Return<void> getBackgroundScanCapabilities(
+            getBackgroundScanCapabilities_cb hidl_status_cb) override;
+    Return<void> getValidFrequenciesForBand(V1_0::WifiBand band,
+                                            getValidFrequenciesForBand_cb hidl_status_cb) override;
+    Return<void> startBackgroundScan(uint32_t cmd_id, const StaBackgroundScanParameters& params,
+                                     startBackgroundScan_cb hidl_status_cb) override;
+    Return<void> stopBackgroundScan(uint32_t cmd_id, stopBackgroundScan_cb hidl_status_cb) override;
+    Return<void> enableLinkLayerStatsCollection(
+            bool debug, enableLinkLayerStatsCollection_cb hidl_status_cb) override;
+    Return<void> disableLinkLayerStatsCollection(
+            disableLinkLayerStatsCollection_cb hidl_status_cb) override;
+    Return<void> getLinkLayerStats(getLinkLayerStats_cb hidl_status_cb) override;
+    Return<void> getLinkLayerStats_1_3(getLinkLayerStats_1_3_cb hidl_status_cb) override;
+    Return<void> getLinkLayerStats_1_5(getLinkLayerStats_1_5_cb hidl_status_cb) override;
+    Return<void> startRssiMonitoring(uint32_t cmd_id, int32_t max_rssi, int32_t min_rssi,
+                                     startRssiMonitoring_cb hidl_status_cb) override;
+    Return<void> stopRssiMonitoring(uint32_t cmd_id, stopRssiMonitoring_cb hidl_status_cb) override;
+    Return<void> getRoamingCapabilities(getRoamingCapabilities_cb hidl_status_cb) override;
+    Return<void> configureRoaming(const StaRoamingConfig& config,
+                                  configureRoaming_cb hidl_status_cb) override;
+    Return<void> setRoamingState(StaRoamingState state, setRoamingState_cb hidl_status_cb) override;
+    Return<void> enableNdOffload(bool enable, enableNdOffload_cb hidl_status_cb) override;
+    Return<void> startSendingKeepAlivePackets(
+            uint32_t cmd_id, const hidl_vec<uint8_t>& ip_packet_data, uint16_t ether_type,
+            const hidl_array<uint8_t, 6>& src_address, const hidl_array<uint8_t, 6>& dst_address,
+            uint32_t period_in_ms, startSendingKeepAlivePackets_cb hidl_status_cb) override;
+    Return<void> stopSendingKeepAlivePackets(
+            uint32_t cmd_id, stopSendingKeepAlivePackets_cb hidl_status_cb) override;
+    Return<void> setScanningMacOui(const hidl_array<uint8_t, 3>& oui,
+                                   setScanningMacOui_cb hidl_status_cb) override;
+    Return<void> startDebugPacketFateMonitoring(
+            startDebugPacketFateMonitoring_cb hidl_status_cb) override;
+    Return<void> getDebugTxPacketFates(getDebugTxPacketFates_cb hidl_status_cb) override;
+    Return<void> getDebugRxPacketFates(getDebugRxPacketFates_cb hidl_status_cb) override;
+    Return<void> setMacAddress(const hidl_array<uint8_t, 6>& mac,
+                               setMacAddress_cb hidl_status_cb) override;
+    Return<void> getFactoryMacAddress(getFactoryMacAddress_cb hidl_status_cb) override;
+    Return<void> setScanMode(bool enable, setScanMode_cb hidl_status_cb) override;
+
+  private:
+    // Corresponding worker functions for the HIDL methods.
+    std::pair<WifiStatus, std::string> getNameInternal();
+    std::pair<WifiStatus, IfaceType> getTypeInternal();
+    WifiStatus registerEventCallbackInternal(const sp<IWifiStaIfaceEventCallback>& callback);
+    std::pair<WifiStatus, uint32_t> getCapabilitiesInternal();
+    std::pair<WifiStatus, StaApfPacketFilterCapabilities> getApfPacketFilterCapabilitiesInternal();
+    WifiStatus installApfPacketFilterInternal(uint32_t cmd_id, const std::vector<uint8_t>& program);
+    std::pair<WifiStatus, std::vector<uint8_t>> readApfPacketFilterDataInternal();
+    std::pair<WifiStatus, StaBackgroundScanCapabilities> getBackgroundScanCapabilitiesInternal();
+    std::pair<WifiStatus, std::vector<WifiChannelInMhz>> getValidFrequenciesForBandInternal(
+            V1_0::WifiBand band);
+    WifiStatus startBackgroundScanInternal(uint32_t cmd_id,
+                                           const StaBackgroundScanParameters& params);
+    WifiStatus stopBackgroundScanInternal(uint32_t cmd_id);
+    WifiStatus enableLinkLayerStatsCollectionInternal(bool debug);
+    WifiStatus disableLinkLayerStatsCollectionInternal();
+    std::pair<WifiStatus, V1_0::StaLinkLayerStats> getLinkLayerStatsInternal();
+    std::pair<WifiStatus, V1_3::StaLinkLayerStats> getLinkLayerStatsInternal_1_3();
+    std::pair<WifiStatus, V1_5::StaLinkLayerStats> getLinkLayerStatsInternal_1_5();
+    WifiStatus startRssiMonitoringInternal(uint32_t cmd_id, int32_t max_rssi, int32_t min_rssi);
+    WifiStatus stopRssiMonitoringInternal(uint32_t cmd_id);
+    std::pair<WifiStatus, StaRoamingCapabilities> getRoamingCapabilitiesInternal();
+    WifiStatus configureRoamingInternal(const StaRoamingConfig& config);
+    WifiStatus setRoamingStateInternal(StaRoamingState state);
+    WifiStatus enableNdOffloadInternal(bool enable);
+    WifiStatus startSendingKeepAlivePacketsInternal(uint32_t cmd_id,
+                                                    const std::vector<uint8_t>& ip_packet_data,
+                                                    uint16_t ether_type,
+                                                    const std::array<uint8_t, 6>& src_address,
+                                                    const std::array<uint8_t, 6>& dst_address,
+                                                    uint32_t period_in_ms);
+    WifiStatus stopSendingKeepAlivePacketsInternal(uint32_t cmd_id);
+    WifiStatus setScanningMacOuiInternal(const std::array<uint8_t, 3>& oui);
+    WifiStatus startDebugPacketFateMonitoringInternal();
+    std::pair<WifiStatus, std::vector<WifiDebugTxPacketFateReport>> getDebugTxPacketFatesInternal();
+    std::pair<WifiStatus, std::vector<WifiDebugRxPacketFateReport>> getDebugRxPacketFatesInternal();
+    WifiStatus setMacAddressInternal(const std::array<uint8_t, 6>& mac);
+    std::pair<WifiStatus, std::array<uint8_t, 6>> getFactoryMacAddressInternal();
+    WifiStatus setScanModeInternal(bool enable);
+
+    std::string ifname_;
+    std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
+    std::weak_ptr<iface_util::WifiIfaceUtil> iface_util_;
+    bool is_valid_;
+    hidl_callback_util::HidlCallbackHandler<IWifiStaIfaceEventCallback> event_cb_handler_;
+
+    DISALLOW_COPY_AND_ASSIGN(WifiStaIface);
+};
+
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // WIFI_STA_IFACE_H_
diff --git a/wifi/1.6/default/wifi_status_util.cpp b/wifi/1.6/default/wifi_status_util.cpp
new file mode 100644
index 0000000..3b18e53
--- /dev/null
+++ b/wifi/1.6/default/wifi_status_util.cpp
@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "wifi_status_util.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+
+std::string legacyErrorToString(legacy_hal::wifi_error error) {
+    switch (error) {
+        case legacy_hal::WIFI_SUCCESS:
+            return "SUCCESS";
+        case legacy_hal::WIFI_ERROR_UNINITIALIZED:
+            return "UNINITIALIZED";
+        case legacy_hal::WIFI_ERROR_NOT_AVAILABLE:
+            return "NOT_AVAILABLE";
+        case legacy_hal::WIFI_ERROR_NOT_SUPPORTED:
+            return "NOT_SUPPORTED";
+        case legacy_hal::WIFI_ERROR_INVALID_ARGS:
+            return "INVALID_ARGS";
+        case legacy_hal::WIFI_ERROR_INVALID_REQUEST_ID:
+            return "INVALID_REQUEST_ID";
+        case legacy_hal::WIFI_ERROR_TIMED_OUT:
+            return "TIMED_OUT";
+        case legacy_hal::WIFI_ERROR_TOO_MANY_REQUESTS:
+            return "TOO_MANY_REQUESTS";
+        case legacy_hal::WIFI_ERROR_OUT_OF_MEMORY:
+            return "OUT_OF_MEMORY";
+        case legacy_hal::WIFI_ERROR_BUSY:
+            return "BUSY";
+        case legacy_hal::WIFI_ERROR_UNKNOWN:
+            return "UNKNOWN";
+        default:
+            return "UNKNOWN ERROR";
+    }
+}
+
+WifiStatus createWifiStatus(WifiStatusCode code, const std::string& description) {
+    return {code, description};
+}
+
+WifiStatus createWifiStatus(WifiStatusCode code) {
+    return createWifiStatus(code, "");
+}
+
+WifiStatus createWifiStatusFromLegacyError(legacy_hal::wifi_error error, const std::string& desc) {
+    switch (error) {
+        case legacy_hal::WIFI_ERROR_UNINITIALIZED:
+        case legacy_hal::WIFI_ERROR_NOT_AVAILABLE:
+            return createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE, desc);
+
+        case legacy_hal::WIFI_ERROR_NOT_SUPPORTED:
+            return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED, desc);
+
+        case legacy_hal::WIFI_ERROR_INVALID_ARGS:
+        case legacy_hal::WIFI_ERROR_INVALID_REQUEST_ID:
+            return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS, desc);
+
+        case legacy_hal::WIFI_ERROR_TIMED_OUT:
+            return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN, desc + ", timed out");
+
+        case legacy_hal::WIFI_ERROR_TOO_MANY_REQUESTS:
+            return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN, desc + ", too many requests");
+
+        case legacy_hal::WIFI_ERROR_OUT_OF_MEMORY:
+            return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN, desc + ", out of memory");
+
+        case legacy_hal::WIFI_ERROR_BUSY:
+            return createWifiStatus(WifiStatusCode::ERROR_BUSY);
+
+        case legacy_hal::WIFI_ERROR_NONE:
+            return createWifiStatus(WifiStatusCode::SUCCESS, desc);
+
+        case legacy_hal::WIFI_ERROR_UNKNOWN:
+            return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN, "unknown");
+
+        default:
+            return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN, "unknown error");
+    }
+}
+
+WifiStatus createWifiStatusFromLegacyError(legacy_hal::wifi_error error) {
+    return createWifiStatusFromLegacyError(error, "");
+}
+
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.6/default/wifi_status_util.h b/wifi/1.6/default/wifi_status_util.h
new file mode 100644
index 0000000..ea1c294
--- /dev/null
+++ b/wifi/1.6/default/wifi_status_util.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef WIFI_STATUS_UTIL_H_
+#define WIFI_STATUS_UTIL_H_
+
+#include <android/hardware/wifi/1.4/IWifi.h>
+
+#include "wifi_legacy_hal.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_6 {
+namespace implementation {
+using namespace android::hardware::wifi::V1_0;
+
+std::string legacyErrorToString(legacy_hal::wifi_error error);
+WifiStatus createWifiStatus(WifiStatusCode code, const std::string& description);
+WifiStatus createWifiStatus(WifiStatusCode code);
+WifiStatus createWifiStatusFromLegacyError(legacy_hal::wifi_error error,
+                                           const std::string& description);
+WifiStatus createWifiStatusFromLegacyError(legacy_hal::wifi_error error);
+
+}  // namespace implementation
+}  // namespace V1_6
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // WIFI_STATUS_UTIL_H_
diff --git a/wifi/hostapd/aidl/aidl_api/android.hardware.wifi.hostapd/current/android/hardware/wifi/hostapd/Bandwidth.aidl b/wifi/hostapd/aidl/aidl_api/android.hardware.wifi.hostapd/current/android/hardware/wifi/hostapd/Bandwidth.aidl
index 890d986..4d78640 100644
--- a/wifi/hostapd/aidl/aidl_api/android.hardware.wifi.hostapd/current/android/hardware/wifi/hostapd/Bandwidth.aidl
+++ b/wifi/hostapd/aidl/aidl_api/android.hardware.wifi.hostapd/current/android/hardware/wifi/hostapd/Bandwidth.aidl
@@ -41,8 +41,9 @@
   BANDWIDTH_80 = 4,
   BANDWIDTH_80P80 = 5,
   BANDWIDTH_160 = 6,
-  BANDWIDTH_2160 = 7,
-  BANDWIDTH_4320 = 8,
-  BANDWIDTH_6480 = 9,
-  BANDWIDTH_8640 = 10,
+  BANDWIDTH_320 = 7,
+  BANDWIDTH_2160 = 8,
+  BANDWIDTH_4320 = 9,
+  BANDWIDTH_6480 = 10,
+  BANDWIDTH_8640 = 11,
 }
diff --git a/wifi/hostapd/aidl/aidl_api/android.hardware.wifi.hostapd/current/android/hardware/wifi/hostapd/Generation.aidl b/wifi/hostapd/aidl/aidl_api/android.hardware.wifi.hostapd/current/android/hardware/wifi/hostapd/Generation.aidl
index 6b60d17..af0e960 100644
--- a/wifi/hostapd/aidl/aidl_api/android.hardware.wifi.hostapd/current/android/hardware/wifi/hostapd/Generation.aidl
+++ b/wifi/hostapd/aidl/aidl_api/android.hardware.wifi.hostapd/current/android/hardware/wifi/hostapd/Generation.aidl
@@ -40,4 +40,5 @@
   WIFI_STANDARD_11AC = 2,
   WIFI_STANDARD_11AX = 3,
   WIFI_STANDARD_11AD = 4,
+  WIFI_STANDARD_11BE = 5,
 }
diff --git a/wifi/hostapd/aidl/aidl_api/android.hardware.wifi.hostapd/current/android/hardware/wifi/hostapd/HwModeParams.aidl b/wifi/hostapd/aidl/aidl_api/android.hardware.wifi.hostapd/current/android/hardware/wifi/hostapd/HwModeParams.aidl
index 844c838..8d8d7bb 100644
--- a/wifi/hostapd/aidl/aidl_api/android.hardware.wifi.hostapd/current/android/hardware/wifi/hostapd/HwModeParams.aidl
+++ b/wifi/hostapd/aidl/aidl_api/android.hardware.wifi.hostapd/current/android/hardware/wifi/hostapd/HwModeParams.aidl
@@ -43,4 +43,5 @@
   boolean enableHeMultiUserBeamformer;
   boolean enableHeTargetWakeTime;
   boolean enableEdmg;
+  boolean enable80211BE;
 }
diff --git a/wifi/hostapd/aidl/aidl_api/android.hardware.wifi.hostapd/current/android/hardware/wifi/hostapd/IHostapdCallback.aidl b/wifi/hostapd/aidl/aidl_api/android.hardware.wifi.hostapd/current/android/hardware/wifi/hostapd/IHostapdCallback.aidl
index 36d2104..9dd062a 100644
--- a/wifi/hostapd/aidl/aidl_api/android.hardware.wifi.hostapd/current/android/hardware/wifi/hostapd/IHostapdCallback.aidl
+++ b/wifi/hostapd/aidl/aidl_api/android.hardware.wifi.hostapd/current/android/hardware/wifi/hostapd/IHostapdCallback.aidl
@@ -36,5 +36,5 @@
 interface IHostapdCallback {
   oneway void onApInstanceInfoChanged(in android.hardware.wifi.hostapd.ApInfo apInfo);
   oneway void onConnectedClientsChanged(in android.hardware.wifi.hostapd.ClientInfo clientInfo);
-  oneway void onFailure(in String ifaceName);
+  oneway void onFailure(in String ifaceName, in String instanceName);
 }
diff --git a/wifi/hostapd/aidl/aidl_api/android.hardware.wifi.hostapd/current/android/hardware/wifi/hostapd/NetworkParams.aidl b/wifi/hostapd/aidl/aidl_api/android.hardware.wifi.hostapd/current/android/hardware/wifi/hostapd/NetworkParams.aidl
index ffe2f33..4554223 100644
--- a/wifi/hostapd/aidl/aidl_api/android.hardware.wifi.hostapd/current/android/hardware/wifi/hostapd/NetworkParams.aidl
+++ b/wifi/hostapd/aidl/aidl_api/android.hardware.wifi.hostapd/current/android/hardware/wifi/hostapd/NetworkParams.aidl
@@ -39,4 +39,5 @@
   android.hardware.wifi.hostapd.EncryptionType encryptionType;
   String passphrase;
   boolean isMetered;
+  byte[] vendorElements;
 }
diff --git a/wifi/hostapd/aidl/android/hardware/wifi/hostapd/Bandwidth.aidl b/wifi/hostapd/aidl/android/hardware/wifi/hostapd/Bandwidth.aidl
index c982402..e605153 100644
--- a/wifi/hostapd/aidl/android/hardware/wifi/hostapd/Bandwidth.aidl
+++ b/wifi/hostapd/aidl/android/hardware/wifi/hostapd/Bandwidth.aidl
@@ -29,8 +29,9 @@
     BANDWIDTH_80 = 4,
     BANDWIDTH_80P80 = 5,
     BANDWIDTH_160 = 6,
-    BANDWIDTH_2160 = 7,
-    BANDWIDTH_4320 = 8,
-    BANDWIDTH_6480 = 9,
-    BANDWIDTH_8640 = 10,
+    BANDWIDTH_320 = 7,
+    BANDWIDTH_2160 = 8,
+    BANDWIDTH_4320 = 9,
+    BANDWIDTH_6480 = 10,
+    BANDWIDTH_8640 = 11,
 }
diff --git a/wifi/hostapd/aidl/android/hardware/wifi/hostapd/Generation.aidl b/wifi/hostapd/aidl/android/hardware/wifi/hostapd/Generation.aidl
index 2cda55b..f4e3eb0 100644
--- a/wifi/hostapd/aidl/android/hardware/wifi/hostapd/Generation.aidl
+++ b/wifi/hostapd/aidl/android/hardware/wifi/hostapd/Generation.aidl
@@ -27,6 +27,7 @@
  * WIFI_STANDARD_11AC = hw_mode is HOSTAPD_MODE_IEEE80211A and VHT is 1.
  * WIFI_STANDARD_11AX = hw_mode is HOSTAPD_MODE_IEEE80211A and High Efficiency supported.
  * WIFI_STANDARD_11AD = hw_mode is HOSTAPD_MODE_IEEE80211AD.
+ * WIFI_STANDARD_11BE = hw_mode is HOSTAPD_MODE_IEEE80211A and Extreme High Throughput supported.
  */
 @VintfStability
 @Backing(type="int")
@@ -37,4 +38,5 @@
     WIFI_STANDARD_11AC = 2,
     WIFI_STANDARD_11AX = 3,
     WIFI_STANDARD_11AD = 4,
+    WIFI_STANDARD_11BE = 5,
 }
diff --git a/wifi/hostapd/aidl/android/hardware/wifi/hostapd/HwModeParams.aidl b/wifi/hostapd/aidl/android/hardware/wifi/hostapd/HwModeParams.aidl
index 210e99f..e66a24a 100644
--- a/wifi/hostapd/aidl/android/hardware/wifi/hostapd/HwModeParams.aidl
+++ b/wifi/hostapd/aidl/android/hardware/wifi/hostapd/HwModeParams.aidl
@@ -68,4 +68,10 @@
      * Enable EDMG (802.11ay), this option is only allowed for the 60GHz band.
      */
     boolean enableEdmg;
+    /**
+     * Whether IEEE 802.11be (Extreme High Throughput) is enabled or not.
+     * Note: hw_mode=a is used to specify that 5 GHz band or 6 GHz band is
+     * used with Extreme High Throughput.
+     */
+    boolean enable80211BE;
 }
diff --git a/wifi/hostapd/aidl/android/hardware/wifi/hostapd/IHostapdCallback.aidl b/wifi/hostapd/aidl/android/hardware/wifi/hostapd/IHostapdCallback.aidl
index 7b04944..456f46a 100644
--- a/wifi/hostapd/aidl/android/hardware/wifi/hostapd/IHostapdCallback.aidl
+++ b/wifi/hostapd/aidl/android/hardware/wifi/hostapd/IHostapdCallback.aidl
@@ -41,7 +41,10 @@
      * Invoked when an asynchronous failure is encountered in one of the access
      * points added via |IHostapd.addAccessPoint|.
      *
-     * @param ifaceName Name of the interface.
+     * @param ifaceName Name of the interface which was added via
+     *                  |IHostapd.addAccessPoint|.
+     * @param instanceName Name of the AP instance which is associated with
+     *                     the interface.
      */
-    oneway void onFailure(in String ifaceName);
+    oneway void onFailure(in String ifaceName, in String instanceName);
 }
diff --git a/wifi/hostapd/aidl/android/hardware/wifi/hostapd/NetworkParams.aidl b/wifi/hostapd/aidl/android/hardware/wifi/hostapd/NetworkParams.aidl
index df84eca..47d9e6f 100644
--- a/wifi/hostapd/aidl/android/hardware/wifi/hostapd/NetworkParams.aidl
+++ b/wifi/hostapd/aidl/android/hardware/wifi/hostapd/NetworkParams.aidl
@@ -44,4 +44,12 @@
      * CHARGEABLE_PUBLIC_NETWORK when set to true.
      */
     boolean isMetered;
+    /**
+     * Additional vendor specific elements for Beacon and Probe Response frames
+     * This parameter can be used to add additional vendor specific element(s) into
+     * the end of the Beacon and Probe Response frames. The format for these
+     * element(s) is a binary dump of the raw information elements (id+len+payload for
+     * one or more elements). Example: byte[]{ 221, 4, 17, 34, 51, 1 }
+     */
+    byte[] vendorElements;
 }
diff --git a/wifi/hostapd/aidl/vts/functional/VtsHalHostapdTargetTest.cpp b/wifi/hostapd/aidl/vts/functional/VtsHalHostapdTargetTest.cpp
index 41c54b3..cd7ff82 100644
--- a/wifi/hostapd/aidl/vts/functional/VtsHalHostapdTargetTest.cpp
+++ b/wifi/hostapd/aidl/vts/functional/VtsHalHostapdTargetTest.cpp
@@ -232,7 +232,7 @@
         const ::aidl::android::hardware::wifi::hostapd::ClientInfo &) override {
         return ndk::ScopedAStatus::ok();
     }
-    ::ndk::ScopedAStatus onFailure(const std::string &) override {
+    ::ndk::ScopedAStatus onFailure(const std::string&, const std::string&) override {
         return ndk::ScopedAStatus::ok();
     }
 };
@@ -431,6 +431,7 @@
     EXPECT_TRUE(status.isOk());
 }
 
+GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(HostapdAidl);
 INSTANTIATE_TEST_SUITE_P(
     Hostapd, HostapdAidl,
     testing::ValuesIn(android::getAidlHalInstanceNames(IHostapd::descriptor)),
diff --git a/wifi/supplicant/aidl/Android.bp b/wifi/supplicant/aidl/Android.bp
index c97a6f9..d00dd21 100644
--- a/wifi/supplicant/aidl/Android.bp
+++ b/wifi/supplicant/aidl/Android.bp
@@ -12,6 +12,15 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "hardware_interfaces_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["hardware_interfaces_license"],
+}
+
 aidl_interface {
     name: "android.hardware.wifi.supplicant",
     vendor_available: true,
diff --git a/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/ISupplicantP2pIfaceCallback.aidl b/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/ISupplicantP2pIfaceCallback.aidl
index ed435e2..826d916 100644
--- a/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/ISupplicantP2pIfaceCallback.aidl
+++ b/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/ISupplicantP2pIfaceCallback.aidl
@@ -50,4 +50,5 @@
   oneway void onServiceDiscoveryResponse(in byte[] srcAddress, in char updateIndicator, in byte[] tlvs);
   oneway void onStaAuthorized(in byte[] srcAddress, in byte[] p2pDeviceAddress);
   oneway void onStaDeauthorized(in byte[] srcAddress, in byte[] p2pDeviceAddress);
+  oneway void onGroupFrequencyChanged(in String groupIfname, in int frequency);
 }
diff --git a/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/ISupplicantStaNetworkCallback.aidl b/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/ISupplicantStaNetworkCallback.aidl
index 4f7584d..6276a35 100644
--- a/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/ISupplicantStaNetworkCallback.aidl
+++ b/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/ISupplicantStaNetworkCallback.aidl
@@ -38,4 +38,5 @@
   oneway void onNetworkEapSimGsmAuthRequest(in android.hardware.wifi.supplicant.NetworkRequestEapSimGsmAuthParams params);
   oneway void onNetworkEapSimUmtsAuthRequest(in android.hardware.wifi.supplicant.NetworkRequestEapSimUmtsAuthParams params);
   oneway void onTransitionDisable(in android.hardware.wifi.supplicant.TransitionDisableIndication ind);
+  oneway void onServerCertificateAvailable(in int depth, in byte[] subject, in byte[] certHash, in byte[] certBlob);
 }
diff --git a/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/WifiTechnology.aidl b/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/WifiTechnology.aidl
index ad36e68..bf5081e 100644
--- a/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/WifiTechnology.aidl
+++ b/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/WifiTechnology.aidl
@@ -39,4 +39,5 @@
   HT = 2,
   VHT = 3,
   HE = 4,
+  EHT = 5,
 }
diff --git a/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/WpaDriverCapabilitiesMask.aidl b/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/WpaDriverCapabilitiesMask.aidl
index 43772af..9a0a924 100644
--- a/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/WpaDriverCapabilitiesMask.aidl
+++ b/wifi/supplicant/aidl/aidl_api/android.hardware.wifi.supplicant/current/android/hardware/wifi/supplicant/WpaDriverCapabilitiesMask.aidl
@@ -38,4 +38,5 @@
   OCE = 2,
   SAE_PK = 4,
   WFD_R2 = 8,
+  TRUST_ON_FIRST_USE = 16,
 }
diff --git a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/AuthAlgMask.aidl b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/AuthAlgMask.aidl
index e8101ea..039d41d 100644
--- a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/AuthAlgMask.aidl
+++ b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/AuthAlgMask.aidl
@@ -19,7 +19,7 @@
 /**
  * Possible mask of values for AuthAlg param.
  * See /external/wpa_supplicant_8/src/common/defs.h for
- * all possible values (starting at WPA_AUTH_ALG_OPEN).
+ * the historical values (starting at WPA_AUTH_ALG_OPEN).
  */
 @VintfStability
 @Backing(type="int")
diff --git a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/GroupCipherMask.aidl b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/GroupCipherMask.aidl
index d5b26ad..99e9da0 100644
--- a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/GroupCipherMask.aidl
+++ b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/GroupCipherMask.aidl
@@ -19,7 +19,7 @@
 /**
  * Possible mask of values for GroupCipher param.
  * See /external/wpa_supplicant_8/src/common/defs.h for
- * all possible values (starting at WPA_CIPHER_WEP40).
+ * the historical values (starting at WPA_CIPHER_WEP40).
  */
 @VintfStability
 @Backing(type="int")
diff --git a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/ISupplicantP2pIfaceCallback.aidl b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/ISupplicantP2pIfaceCallback.aidl
index f0cabd6..2b58cc2 100644
--- a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/ISupplicantP2pIfaceCallback.aidl
+++ b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/ISupplicantP2pIfaceCallback.aidl
@@ -205,4 +205,12 @@
      * @param p2pDeviceAddress P2P device address.
      */
     oneway void onStaDeauthorized(in byte[] srcAddress, in byte[] p2pDeviceAddress);
+
+    /**
+     * Used to indicate that operating frequency has changed for this P2P group interface.
+     *
+     * @param groupIfName Interface name of the group. (For ex: p2p-p2p0-1)
+     * @param frequency New operating frequency in MHz.
+     */
+    oneway void onGroupFrequencyChanged(in String groupIfname, in int frequency);
 }
diff --git a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/ISupplicantStaNetworkCallback.aidl b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/ISupplicantStaNetworkCallback.aidl
index c28b494..4024c35 100644
--- a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/ISupplicantStaNetworkCallback.aidl
+++ b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/ISupplicantStaNetworkCallback.aidl
@@ -62,4 +62,13 @@
      * Used to notify WPA3 transition disable.
      */
     oneway void onTransitionDisable(in TransitionDisableIndication ind);
+
+    /**
+     * Used to notify EAP certificate event.
+     *
+     * On receiving a server certifidate from TLS handshake, send this certificate
+     * to the framework for Trust On First Use.
+     */
+    oneway void onServerCertificateAvailable(
+            in int depth, in byte[] subject, in byte[] certHash, in byte[] certBlob);
 }
diff --git a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/KeyMgmtMask.aidl b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/KeyMgmtMask.aidl
index 3225585..f0c3345 100644
--- a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/KeyMgmtMask.aidl
+++ b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/KeyMgmtMask.aidl
@@ -19,7 +19,7 @@
 /**
  * Possible mask of values for KeyMgmt param.
  * See /external/wpa_supplicant_8/src/common/defs.h for
- * all possible values (starting at WPA_KEY_MGMT_IEEE8021X).
+ * the historical values (starting at WPA_KEY_MGMT_IEEE8021X).
  */
 @VintfStability
 @Backing(type="int")
diff --git a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/PairwiseCipherMask.aidl b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/PairwiseCipherMask.aidl
index ad134fa..7179fea 100644
--- a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/PairwiseCipherMask.aidl
+++ b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/PairwiseCipherMask.aidl
@@ -19,7 +19,7 @@
 /**
  * Possible mask of values for PairwiseCipher param.
  * See /external/wpa_supplicant_8/src/common/defs.h for
- * all possible values (starting at WPA_CIPHER_NONE).
+ * the historical values (starting at WPA_CIPHER_NONE).
  */
 @VintfStability
 @Backing(type="int")
diff --git a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/ProtoMask.aidl b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/ProtoMask.aidl
index 65c832b..dc3d80b 100644
--- a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/ProtoMask.aidl
+++ b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/ProtoMask.aidl
@@ -19,7 +19,7 @@
 /**
  * Possible mask of values for Proto param.
  * See /external/wpa_supplicant_8/src/common/defs.h for
- * all possible values (starting at WPA_PROTO_WPA).
+ * the historical values (starting at WPA_PROTO_WPA).
  */
 @VintfStability
 @Backing(type="int")
diff --git a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/WifiTechnology.aidl b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/WifiTechnology.aidl
index 00c16b4..d364c75 100644
--- a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/WifiTechnology.aidl
+++ b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/WifiTechnology.aidl
@@ -39,4 +39,8 @@
      * For 802.11ax
      */
     HE = 4,
+    /**
+     * For 802.11be
+     */
+    EHT = 5,
 }
diff --git a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/WpaDriverCapabilitiesMask.aidl b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/WpaDriverCapabilitiesMask.aidl
index e174199..08006cf 100644
--- a/wifi/supplicant/aidl/android/hardware/wifi/supplicant/WpaDriverCapabilitiesMask.aidl
+++ b/wifi/supplicant/aidl/android/hardware/wifi/supplicant/WpaDriverCapabilitiesMask.aidl
@@ -38,4 +38,8 @@
      * Wi-Fi Display R2
      */
     WFD_R2 = 1 << 3,
+    /**
+     * Trust On First Use
+     */
+    TRUST_ON_FIRST_USE = 1 << 4,
 }
diff --git a/wifi/supplicant/aidl/vts/functional/supplicant_p2p_iface_aidl_test.cpp b/wifi/supplicant/aidl/vts/functional/supplicant_p2p_iface_aidl_test.cpp
index 2f4f06d..10aab4d 100644
--- a/wifi/supplicant/aidl/vts/functional/supplicant_p2p_iface_aidl_test.cpp
+++ b/wifi/supplicant/aidl/vts/functional/supplicant_p2p_iface_aidl_test.cpp
@@ -159,6 +159,10 @@
         const std::vector<uint8_t>& /* p2pDeviceAddress */) override {
         return ndk::ScopedAStatus::ok();
     }
+    ::ndk::ScopedAStatus onGroupFrequencyChanged(const std::string& /* groupIfname */,
+                                                 int32_t /* frequency */) override {
+        return ndk::ScopedAStatus::ok();
+    }
 };
 
 class SupplicantP2pIfaceAidlTest : public testing::TestWithParam<std::string> {
@@ -620,6 +624,7 @@
         p2p_iface_->removeUpnpService(0 /* version */, upnpServiceName).isOk());
 }
 
+GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(SupplicantP2pIfaceAidlTest);
 INSTANTIATE_TEST_SUITE_P(Supplicant, SupplicantP2pIfaceAidlTest,
                          testing::ValuesIn(android::getAidlHalInstanceNames(
                              ISupplicant::descriptor)),
diff --git a/wifi/supplicant/aidl/vts/functional/supplicant_sta_iface_aidl_test.cpp b/wifi/supplicant/aidl/vts/functional/supplicant_sta_iface_aidl_test.cpp
index f51c07f..6e6955f 100644
--- a/wifi/supplicant/aidl/vts/functional/supplicant_sta_iface_aidl_test.cpp
+++ b/wifi/supplicant/aidl/vts/functional/supplicant_sta_iface_aidl_test.cpp
@@ -769,6 +769,7 @@
     EXPECT_TRUE(sta_iface_->removeDppUri(peer_id).isOk());
 }
 
+GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(SupplicantStaIfaceAidlTest);
 INSTANTIATE_TEST_SUITE_P(Supplicant, SupplicantStaIfaceAidlTest,
                          testing::ValuesIn(android::getAidlHalInstanceNames(
                              ISupplicant::descriptor)),
diff --git a/wifi/supplicant/aidl/vts/functional/supplicant_sta_network_aidl_test.cpp b/wifi/supplicant/aidl/vts/functional/supplicant_sta_network_aidl_test.cpp
index 66c8807..0a35f66 100644
--- a/wifi/supplicant/aidl/vts/functional/supplicant_sta_network_aidl_test.cpp
+++ b/wifi/supplicant/aidl/vts/functional/supplicant_sta_network_aidl_test.cpp
@@ -92,6 +92,12 @@
         TransitionDisableIndication /* ind */) override {
         return ndk::ScopedAStatus::ok();
     }
+    ::ndk::ScopedAStatus onServerCertificateAvailable(
+            int32_t /* depth */, const std::vector<uint8_t>& /* subject */,
+            const std::vector<uint8_t>& /* certHash */,
+            const std::vector<uint8_t>& /* certBlob */) override {
+        return ndk::ScopedAStatus::ok();
+    }
 };
 
 class SupplicantStaNetworkAidlTest
@@ -778,6 +784,7 @@
     EXPECT_NE(retrievedToken.size(), 0);
 }
 
+GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(SupplicantStaNetworkAidlTest);
 INSTANTIATE_TEST_SUITE_P(Supplicant, SupplicantStaNetworkAidlTest,
                          testing::ValuesIn(android::getAidlHalInstanceNames(
                              ISupplicant::descriptor)),