diff --git a/CleanSpec.mk b/CleanSpec.mk
index 531e44e..0900eea 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -66,3 +66,6 @@
 $(call add-clean-step, find $(PRODUCT_OUT)/system $(PRODUCT_OUT)/vendor -type f -name "android\.hardware\.configstore\@1\.1*" -print0 | xargs -0 rm -f)
 $(call add-clean-step, find $(PRODUCT_OUT)/system $(PRODUCT_OUT)/vendor -type f -name "android\.hardware\.configstore*" -print0 | xargs -0 rm -f)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/vendor/etc/seccomp_policy/configstore@1.0.policy)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/vendor/etc/seccomp_policy/configstore@1.1.policy)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/vendor/bin/hw/android.hardware.configstore@1.1-service)
+$(call add-clean-step, rm -rf $(PRODUCT_OUT)/vendor/etc/init/android.hardware.configstore@1.1-service.rc)
diff --git a/audio/common/all-versions/default/include/common/all-versions/default/HidlUtils.impl.h b/audio/common/all-versions/default/include/common/all-versions/default/HidlUtils.impl.h
index 8ab7350..632e816 100644
--- a/audio/common/all-versions/default/include/common/all-versions/default/HidlUtils.impl.h
+++ b/audio/common/all-versions/default/include/common/all-versions/default/HidlUtils.impl.h
@@ -174,9 +174,9 @@
             config->ext.mix.hwModule = halConfig.ext.mix.hw_module;
             config->ext.mix.ioHandle = halConfig.ext.mix.handle;
             if (halConfig.role == AUDIO_PORT_ROLE_SOURCE) {
-                config->ext.mix.useCase.source = AudioSource(halConfig.ext.mix.usecase.source);
-            } else if (halConfig.role == AUDIO_PORT_ROLE_SINK) {
                 config->ext.mix.useCase.stream = AudioStreamType(halConfig.ext.mix.usecase.stream);
+            } else if (halConfig.role == AUDIO_PORT_ROLE_SINK) {
+                config->ext.mix.useCase.source = AudioSource(halConfig.ext.mix.usecase.source);
             }
             break;
         }
@@ -212,11 +212,11 @@
             halConfig->ext.mix.hw_module = config.ext.mix.hwModule;
             halConfig->ext.mix.handle = config.ext.mix.ioHandle;
             if (config.role == AudioPortRole::SOURCE) {
-                halConfig->ext.mix.usecase.source =
-                    static_cast<audio_source_t>(config.ext.mix.useCase.source);
-            } else if (config.role == AudioPortRole::SINK) {
                 halConfig->ext.mix.usecase.stream =
                     static_cast<audio_stream_type_t>(config.ext.mix.useCase.stream);
+            } else if (config.role == AudioPortRole::SINK) {
+                halConfig->ext.mix.usecase.source =
+                    static_cast<audio_source_t>(config.ext.mix.useCase.source);
             }
             break;
         }
diff --git a/audio/core/4.0/vts/functional/Android.bp b/audio/core/4.0/vts/functional/Android.bp
index 22c5493..e3b376c 100644
--- a/audio/core/4.0/vts/functional/Android.bp
+++ b/audio/core/4.0/vts/functional/Android.bp
@@ -29,6 +29,9 @@
         "libicuuc_stubdata",
         "libxml2",
     ],
+    shared_libs: [
+        "libfmq",
+    ],
     header_libs: [
         "android.hardware.audio.common.util@all-versions",
     ],
diff --git a/audio/core/4.0/vts/functional/AudioPrimaryHidlHalTest.cpp b/audio/core/4.0/vts/functional/AudioPrimaryHidlHalTest.cpp
index 9c9b749..f4ab542 100644
--- a/audio/core/4.0/vts/functional/AudioPrimaryHidlHalTest.cpp
+++ b/audio/core/4.0/vts/functional/AudioPrimaryHidlHalTest.cpp
@@ -38,6 +38,8 @@
 #include <android/hardware/audio/4.0/IPrimaryDevice.h>
 #include <android/hardware/audio/4.0/types.h>
 #include <android/hardware/audio/common/4.0/types.h>
+#include <fmq/EventFlag.h>
+#include <fmq/MessageQueue.h>
 
 #include <common/all-versions/VersionUtils.h>
 
@@ -55,13 +57,16 @@
 using std::list;
 
 using ::android::sp;
-using ::android::hardware::Return;
+using ::android::hardware::EventFlag;
 using ::android::hardware::hidl_bitfield;
 using ::android::hardware::hidl_enum_range;
 using ::android::hardware::hidl_handle;
 using ::android::hardware::hidl_string;
 using ::android::hardware::hidl_vec;
+using ::android::hardware::kSynchronizedReadWrite;
+using ::android::hardware::MessageQueue;
 using ::android::hardware::MQDescriptorSync;
+using ::android::hardware::Return;
 using ::android::hardware::audio::V4_0::AudioDrain;
 using ::android::hardware::audio::V4_0::DeviceAddress;
 using ::android::hardware::audio::V4_0::IDevice;
@@ -71,6 +76,7 @@
 using ::android::hardware::audio::V4_0::IDevicesFactory;
 using ::android::hardware::audio::V4_0::IStream;
 using ::android::hardware::audio::V4_0::IStreamIn;
+using ::android::hardware::audio::V4_0::MessageQueueFlagBits;
 using ::android::hardware::audio::V4_0::TimeSpec;
 using ReadParameters = ::android::hardware::audio::V4_0::IStreamIn::ReadParameters;
 using ReadStatus = ::android::hardware::audio::V4_0::IStreamIn::ReadStatus;
@@ -489,7 +495,7 @@
 }
 
 //////////////////////////////////////////////////////////////////////////////
-/////////////////////////////// getMicrophones ///////////////////////////////
+/////////////////////////// get(Active)Microphones ///////////////////////////
 //////////////////////////////////////////////////////////////////////////////
 
 TEST_F(AudioPrimaryHidlTest, GetMicrophonesTest) {
@@ -497,6 +503,76 @@
     hidl_vec<MicrophoneInfo> microphones;
     ASSERT_OK(device->getMicrophones(returnIn(res, microphones)));
     ASSERT_OK(res);
+    if (microphones.size() > 0) {
+        // When there is microphone on the phone, try to open an input stream
+        // and query for the active microphones.
+        doc::test(
+            "Make sure getMicrophones always succeeds"
+            "and getActiveMicrophones always succeeds when recording from these microphones.");
+        AudioIoHandle ioHandle = (AudioIoHandle)AudioHandleConsts::AUDIO_IO_HANDLE_NONE;
+        AudioConfig config{};
+        config.channelMask = mkBitfield(AudioChannelMask::IN_MONO);
+        config.sampleRateHz = 8000;
+        config.format = AudioFormat::PCM_16_BIT;
+        auto flags = hidl_bitfield<AudioInputFlag>(AudioInputFlag::NONE);
+        const SinkMetadata initialMetadata = {{{AudioSource::MIC, 1 /* gain */}}};
+        EventFlag* efGroup;
+        for (auto microphone : microphones) {
+            if (microphone.deviceAddress.device != AudioDevice::IN_BUILTIN_MIC) {
+                continue;
+            }
+            sp<IStreamIn> stream;
+            AudioConfig suggestedConfig{};
+            ASSERT_OK(device->openInputStream(ioHandle, microphone.deviceAddress, config, flags,
+                                              initialMetadata,
+                                              returnIn(res, stream, suggestedConfig)));
+            if (res != Result::OK) {
+                ASSERT_TRUE(stream == nullptr);
+                AudioConfig suggestedConfigRetry{};
+                ASSERT_OK(device->openInputStream(ioHandle, microphone.deviceAddress,
+                                                  suggestedConfig, flags, initialMetadata,
+                                                  returnIn(res, stream, suggestedConfigRetry)));
+            }
+            ASSERT_OK(res);
+            hidl_vec<MicrophoneInfo> activeMicrophones;
+            Result readRes;
+            typedef MessageQueue<ReadParameters, kSynchronizedReadWrite> CommandMQ;
+            typedef MessageQueue<uint8_t, kSynchronizedReadWrite> DataMQ;
+            std::unique_ptr<CommandMQ> commandMQ;
+            std::unique_ptr<DataMQ> dataMQ;
+            size_t frameSize = stream->getFrameSize();
+            size_t frameCount = stream->getBufferSize() / frameSize;
+            ASSERT_OK(stream->prepareForReading(
+                frameSize, frameCount, [&](auto r, auto& c, auto& d, auto&, auto&) {
+                    readRes = r;
+                    if (readRes == Result::OK) {
+                        commandMQ.reset(new CommandMQ(c));
+                        dataMQ.reset(new DataMQ(d));
+                        if (dataMQ->isValid() && dataMQ->getEventFlagWord()) {
+                            EventFlag::createEventFlag(dataMQ->getEventFlagWord(), &efGroup);
+                        }
+                    }
+                }));
+            ASSERT_OK(readRes);
+            ReadParameters params;
+            params.command = IStreamIn::ReadCommand::READ;
+            ASSERT_TRUE(commandMQ != nullptr);
+            ASSERT_TRUE(commandMQ->isValid());
+            ASSERT_TRUE(commandMQ->write(&params));
+            efGroup->wake(static_cast<uint32_t>(MessageQueueFlagBits::NOT_FULL));
+            uint32_t efState = 0;
+            efGroup->wait(static_cast<uint32_t>(MessageQueueFlagBits::NOT_EMPTY), &efState);
+            if (efState & static_cast<uint32_t>(MessageQueueFlagBits::NOT_EMPTY)) {
+                ASSERT_OK(stream->getActiveMicrophones(returnIn(res, activeMicrophones)));
+                ASSERT_OK(res);
+                ASSERT_NE(0U, activeMicrophones.size());
+            }
+            stream->close();
+            if (efGroup) {
+                EventFlag::deleteEventFlag(&efGroup);
+            }
+        }
+    }
 }
 
 //////////////////////////////////////////////////////////////////////////////
@@ -1104,14 +1180,6 @@
     ASSERT_OK(stream->updateSinkMetadata(initialMetadata));
 }
 
-TEST_P(InputStreamTest, getActiveMicrophones) {
-    doc::test("Getting active microphones should always succeed");
-    hidl_vec<MicrophoneInfo> microphones;
-    ASSERT_OK(device->getMicrophones(returnIn(res, microphones)));
-    ASSERT_OK(res);
-    ASSERT_TRUE(microphones.size() > 0);
-}
-
 //////////////////////////////////////////////////////////////////////////////
 ///////////////////////////////// StreamOut //////////////////////////////////
 //////////////////////////////////////////////////////////////////////////////
diff --git a/audio/core/all-versions/default/include/core/all-versions/default/Device.h b/audio/core/all-versions/default/include/core/all-versions/default/Device.h
index eb53b48..222d3de 100644
--- a/audio/core/all-versions/default/include/core/all-versions/default/Device.h
+++ b/audio/core/all-versions/default/include/core/all-versions/default/Device.h
@@ -124,7 +124,8 @@
     Return<void> debug(const hidl_handle& fd, const hidl_vec<hidl_string>& options) override;
 
     // Utility methods for extending interfaces.
-    Result analyzeStatus(const char* funcName, int status);
+    Result analyzeStatus(const char* funcName, int status,
+                         const std::vector<int>& ignoreErrors = {});
     void closeInputStream(audio_stream_in_t* stream);
     void closeOutputStream(audio_stream_out_t* stream);
     audio_hw_device_t* device() const { return mDevice; }
diff --git a/audio/core/all-versions/default/include/core/all-versions/default/Device.impl.h b/audio/core/all-versions/default/include/core/all-versions/default/Device.impl.h
index 230b8de..52d2186 100644
--- a/audio/core/all-versions/default/include/core/all-versions/default/Device.impl.h
+++ b/audio/core/all-versions/default/include/core/all-versions/default/Device.impl.h
@@ -40,8 +40,9 @@
     mDevice = nullptr;
 }
 
-Result Device::analyzeStatus(const char* funcName, int status) {
-    return util::analyzeStatus("Device", funcName, status);
+Result Device::analyzeStatus(const char* funcName, int status,
+                             const std::vector<int>& ignoreErrors) {
+    return util::analyzeStatus("Device", funcName, status, ignoreErrors);
 }
 
 void Device::closeInputStream(audio_stream_in_t* stream) {
@@ -155,7 +156,8 @@
     }
     AudioConfig suggestedConfig;
     HidlUtils::audioConfigFromHal(halConfig, &suggestedConfig);
-    _hidl_cb(analyzeStatus("open_output_stream", status), streamOut, suggestedConfig);
+    _hidl_cb(analyzeStatus("open_output_stream", status, {EINVAL} /* ignore */), streamOut,
+             suggestedConfig);
     return Void();
 }
 
@@ -183,7 +185,8 @@
     }
     AudioConfig suggestedConfig;
     HidlUtils::audioConfigFromHal(halConfig, &suggestedConfig);
-    _hidl_cb(analyzeStatus("open_input_stream", status), streamIn, suggestedConfig);
+    _hidl_cb(analyzeStatus("open_input_stream", status, {EINVAL} /* ignore */), streamIn,
+             suggestedConfig);
     return Void();
 }
 
diff --git a/audio/core/all-versions/default/include/core/all-versions/default/DevicesFactory.impl.h b/audio/core/all-versions/default/include/core/all-versions/default/DevicesFactory.impl.h
index 43e5d6e..a9f59fb 100644
--- a/audio/core/all-versions/default/include/core/all-versions/default/DevicesFactory.impl.h
+++ b/audio/core/all-versions/default/include/core/all-versions/default/DevicesFactory.impl.h
@@ -106,8 +106,8 @@
     return rc;
 }
 
-IDevicesFactory* HIDL_FETCH_IDevicesFactory(const char* /* name */) {
-    return new DevicesFactory();
+IDevicesFactory* HIDL_FETCH_IDevicesFactory(const char* name) {
+    return strcmp(name, "default") == 0 ? new DevicesFactory() : nullptr;
 }
 
 }  // namespace implementation
diff --git a/audio/effect/all-versions/default/include/effect/all-versions/default/EffectsFactory.impl.h b/audio/effect/all-versions/default/include/effect/all-versions/default/EffectsFactory.impl.h
index 1882a2c..f27c739 100644
--- a/audio/effect/all-versions/default/include/effect/all-versions/default/EffectsFactory.impl.h
+++ b/audio/effect/all-versions/default/include/effect/all-versions/default/EffectsFactory.impl.h
@@ -183,8 +183,8 @@
     return Void();
 }
 
-IEffectsFactory* HIDL_FETCH_IEffectsFactory(const char* /* name */) {
-    return new EffectsFactory();
+IEffectsFactory* HIDL_FETCH_IEffectsFactory(const char* name) {
+    return strcmp(name, "default") == 0 ? new EffectsFactory() : nullptr;
 }
 
 }  // namespace implementation
diff --git a/automotive/vehicle/2.0/default/Android.bp b/automotive/vehicle/2.0/default/Android.bp
index 22ab079..7802ef0 100644
--- a/automotive/vehicle/2.0/default/Android.bp
+++ b/automotive/vehicle/2.0/default/Android.bp
@@ -58,12 +58,14 @@
     vendor: true,
     defaults: ["vhal_v2_0_defaults"],
     srcs: [
+        "impl/vhal_v2_0/CommConn.cpp",
         "impl/vhal_v2_0/EmulatedVehicleHal.cpp",
         "impl/vhal_v2_0/VehicleEmulator.cpp",
         "impl/vhal_v2_0/PipeComm.cpp",
         "impl/vhal_v2_0/SocketComm.cpp",
         "impl/vhal_v2_0/LinearFakeValueGenerator.cpp",
         "impl/vhal_v2_0/JsonFakeValueGenerator.cpp",
+        "impl/vhal_v2_0/GeneratorHub.cpp",
     ],
     local_include_dirs: ["common/include/vhal_v2_0"],
     export_include_dirs: ["impl"],
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/CommBase.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/CommBase.h
deleted file mode 100644
index 6832ad3..0000000
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/CommBase.h
+++ /dev/null
@@ -1,86 +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 android_hardware_automotive_vehicle_V2_0_impl_CommBase_H_
-#define android_hardware_automotive_vehicle_V2_0_impl_CommBase_H_
-
-#include <string>
-#include <vector>
-
-namespace android {
-namespace hardware {
-namespace automotive {
-namespace vehicle {
-namespace V2_0 {
-
-namespace impl {
-
-/**
- * This is the communications base class.  It defines the interface used in DefaultVehicleHal to
- * send and receive data to and from the emulator.
- */
-class CommBase {
-public:
-    virtual ~CommBase() = default;
-
-    /**
-     * Closes a connection if it is open.
-     */
-    virtual void stop() {}
-
-    /**
-     * Creates a connection to the other side.
-     *
-     * @return int Returns fd or socket number if connection is successful.
-     *              Otherwise, returns -1 if no connection is availble.
-     */
-    virtual int connect() { return 0; }
-
-    /**
-     * Opens the communications channel.
-     *
-     * @return int Returns 0 if channel is opened, else -errno if failed.
-     */
-    virtual int open() = 0;
-
-    /**
-     * Blocking call to read data from the connection.
-     *
-     * @return std::vector<uint8_t> Serialized protobuf data received from emulator.  This will be
-     *              an empty vector if the connection was closed or some other error occurred.
-     */
-    virtual std::vector<uint8_t> read() = 0;
-
-    /**
-     * Transmits a string of data to the emulator.
-     *
-     * @param data Serialized protobuf data to transmit.
-     *
-     * @return int Number of bytes transmitted, or -1 if failed.
-     */
-    virtual int write(const std::vector<uint8_t>& data) = 0;
-};
-
-}  // impl
-
-}  // namespace V2_0
-}  // namespace vehicle
-}  // namespace automotive
-}  // namespace hardware
-}  // namespace android
-
-
-#endif  // android_hardware_automotive_vehicle_V2_0_impl_CommBase_H_
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/CommConn.cpp b/automotive/vehicle/2.0/default/impl/vhal_v2_0/CommConn.cpp
new file mode 100644
index 0000000..bf1de81
--- /dev/null
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/CommConn.cpp
@@ -0,0 +1,80 @@
+/*
+ * 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.
+ */
+
+#define LOG_TAG "CommConn"
+
+#include <thread>
+
+#include <android/hardware/automotive/vehicle/2.0/IVehicle.h>
+#include <log/log.h>
+
+#include "CommConn.h"
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace vehicle {
+namespace V2_0 {
+
+namespace impl {
+
+void CommConn::start() {
+    mReadThread = std::make_unique<std::thread>(std::bind(&CommConn::readThread, this));
+}
+
+void CommConn::stop() {
+    if (mReadThread->joinable()) {
+        mReadThread->join();
+    }
+}
+
+void CommConn::sendMessage(emulator::EmulatorMessage const& msg) {
+    int numBytes = msg.ByteSize();
+    std::vector<uint8_t> buffer(static_cast<size_t>(numBytes));
+    if (!msg.SerializeToArray(buffer.data(), numBytes)) {
+        ALOGE("%s: SerializeToString failed!", __func__);
+        return;
+    }
+
+    write(buffer);
+}
+
+void CommConn::readThread() {
+    std::vector<uint8_t> buffer;
+    while (isOpen()) {
+        buffer = read();
+        if (buffer.size() == 0) {
+            ALOGI("%s: Read returned empty message, exiting read loop.", __func__);
+            break;
+        }
+
+        emulator::EmulatorMessage rxMsg;
+        if (rxMsg.ParseFromArray(buffer.data(), static_cast<int32_t>(buffer.size()))) {
+            emulator::EmulatorMessage respMsg;
+            mMessageProcessor->processMessage(rxMsg, respMsg);
+
+            sendMessage(respMsg);
+        }
+    }
+}
+
+}  // namespace impl
+
+}  // namespace V2_0
+}  // namespace vehicle
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/CommConn.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/CommConn.h
new file mode 100644
index 0000000..87b0dfc
--- /dev/null
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/CommConn.h
@@ -0,0 +1,117 @@
+/*
+ * 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 android_hardware_automotive_vehicle_V2_0_impl_CommBase_H_
+#define android_hardware_automotive_vehicle_V2_0_impl_CommBase_H_
+
+#include <android/hardware/automotive/vehicle/2.0/IVehicle.h>
+#include <string>
+#include <thread>
+#include <vector>
+
+#include "VehicleHalProto.pb.h"
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace vehicle {
+namespace V2_0 {
+
+namespace impl {
+
+/**
+ * MessageProcess is an interface implemented by VehicleEmulator to process messages received
+ * over a CommConn.
+ */
+class MessageProcessor {
+   public:
+    virtual ~MessageProcessor() = default;
+
+    /**
+     * Process a single message received over a CommConn. Populate the given respMsg with the reply
+     * message we should send.
+     */
+    virtual void processMessage(emulator::EmulatorMessage const& rxMsg,
+                                emulator::EmulatorMessage& respMsg) = 0;
+};
+
+/**
+ * This is the interface that both PipeComm and SocketComm use to represent a connection. The
+ * connection will listen for commands on a separate 'read' thread.
+ */
+class CommConn {
+   public:
+    CommConn(MessageProcessor* messageProcessor) : mMessageProcessor(messageProcessor) {}
+
+    virtual ~CommConn() {}
+
+    /**
+     * Start the read thread reading messages from this connection.
+     */
+    virtual void start();
+
+    /**
+     * Closes a connection if it is open.
+     */
+    virtual void stop();
+
+    /**
+     * Returns true if the connection is open and available to send/receive.
+     */
+    virtual bool isOpen() = 0;
+
+    /**
+     * Blocking call to read data from the connection.
+     *
+     * @return std::vector<uint8_t> Serialized protobuf data received from emulator.  This will be
+     *              an empty vector if the connection was closed or some other error occurred.
+     */
+    virtual std::vector<uint8_t> read() = 0;
+
+    /**
+     * Transmits a string of data to the emulator.
+     *
+     * @param data Serialized protobuf data to transmit.
+     *
+     * @return int Number of bytes transmitted, or -1 if failed.
+     */
+    virtual int write(const std::vector<uint8_t>& data) = 0;
+
+    /**
+     * Serialized and send the given message to the other side.
+     */
+    void sendMessage(emulator::EmulatorMessage const& msg);
+
+   protected:
+    std::unique_ptr<std::thread> mReadThread;
+    MessageProcessor* mMessageProcessor;
+
+    /**
+     * A thread that reads messages in a loop, and responds. You can stop this thread by calling
+     * stop().
+     */
+    void readThread();
+};
+
+}  // namespace impl
+
+}  // namespace V2_0
+}  // namespace vehicle
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
+
+#endif  // android_hardware_automotive_vehicle_V2_0_impl_CommBase_H_
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/DefaultConfig.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/DefaultConfig.h
index eb9d660..e0b54d0 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/DefaultConfig.h
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/DefaultConfig.h
@@ -34,6 +34,10 @@
 constexpr int AP_POWER_STATE_REPORT = (int)VehicleProperty::AP_POWER_STATE_REPORT;
 constexpr int DOOR_1_LEFT = (int)VehicleAreaDoor::ROW_1_LEFT;
 constexpr int DOOR_1_RIGHT = (int)VehicleAreaDoor::ROW_1_RIGHT;
+constexpr int DOOR_2_LEFT = (int)VehicleAreaDoor::ROW_2_LEFT;
+constexpr int DOOR_2_RIGHT = (int)VehicleAreaDoor::ROW_2_RIGHT;
+constexpr int FAN_DIRECTION_FACE = (int)VehicleHvacFanDirection::FACE;
+constexpr int FAN_DIRECTION_FLOOR = (int)VehicleHvacFanDirection::FLOOR;
 constexpr int OBD2_LIVE_FRAME = (int)VehicleProperty::OBD2_LIVE_FRAME;
 constexpr int OBD2_FREEZE_FRAME = (int)VehicleProperty::OBD2_FREEZE_FRAME;
 constexpr int OBD2_FREEZE_FRAME_INFO = (int)VehicleProperty::OBD2_FREEZE_FRAME_INFO;
@@ -44,10 +48,28 @@
 constexpr int ALL_WHEELS =
     (int)(VehicleAreaWheel::LEFT_FRONT | VehicleAreaWheel::RIGHT_FRONT |
           VehicleAreaWheel::LEFT_REAR | VehicleAreaWheel::RIGHT_REAR);
+constexpr int SEAT_1_LEFT = (int)(VehicleAreaSeat::ROW_1_LEFT);
+constexpr int SEAT_1_RIGHT = (int)(VehicleAreaSeat::ROW_1_RIGHT);
 constexpr int HVAC_LEFT = (int)(VehicleAreaSeat::ROW_1_LEFT | VehicleAreaSeat::ROW_2_LEFT |
                                 VehicleAreaSeat::ROW_2_CENTER);
 constexpr int HVAC_RIGHT = (int)(VehicleAreaSeat::ROW_1_RIGHT | VehicleAreaSeat::ROW_2_RIGHT);
 constexpr int HVAC_ALL = HVAC_LEFT | HVAC_RIGHT;
+constexpr int VENDOR_EXTENSION_BOOLEAN_PROPERTY =
+    (int)(0x101 | VehiclePropertyGroup::VENDOR | VehiclePropertyType::BOOLEAN | VehicleArea::DOOR);
+constexpr int VENDOR_EXTENSION_FLOAT_PROPERTY =
+    (int)(0x102 | VehiclePropertyGroup::VENDOR | VehiclePropertyType::FLOAT | VehicleArea::SEAT);
+constexpr int VENDOR_EXTENSION_INT_PROPERTY =
+    (int)(0x103 | VehiclePropertyGroup::VENDOR | VehiclePropertyType::INT32 | VehicleArea::WINDOW);
+constexpr int VENDOR_EXTENSION_STRING_PROPERTY =
+    (int)(0x104 | VehiclePropertyGroup::VENDOR | VehiclePropertyType::STRING | VehicleArea::GLOBAL);
+constexpr int FUEL_DOOR_REAR_LEFT = (int)PortLocationType::REAR_LEFT;
+constexpr int CHARGE_PORT_FRONT_LEFT = (int)PortLocationType::FRONT_LEFT;
+constexpr int LIGHT_STATE_ON = (int)VehicleLightState::ON;
+constexpr int LIGHT_SWITCH_AUTO = (int)VehicleLightSwitch::AUTOMATIC;
+constexpr int WHEEL_FRONT_LEFT = (int)VehicleAreaWheel::LEFT_FRONT;
+constexpr int WHEEL_FRONT_RIGHT = (int)VehicleAreaWheel::RIGHT_FRONT;
+constexpr int WHEEL_REAR_LEFT = (int)VehicleAreaWheel::LEFT_REAR;
+constexpr int WHEEL_REAR_RIGHT = (int)VehicleAreaWheel::RIGHT_REAR;
 
 /**
  * This property is used for test purpose to generate fake events. Here is the test package that
@@ -70,33 +92,39 @@
 enum class FakeDataCommand : int32_t {
     /**
      * Starts linear fake data generation. Caller must provide additional data:
-     *     int32Values[1] - VehicleProperty to which command applies
+     *     int32Values[1] - vehicle property to which command applies
      *     int64Values[0] - periodic interval in nanoseconds
      *     floatValues[0] - initial value
      *     floatValues[1] - dispersion defines the min/max value relative to initial value, where
      *                      max = initial_value + dispersion, min = initial_value - dispersion.
      *                      Dispersion should be non-negative, otherwise the behavior is undefined.
      *     floatValues[2] - increment, with every timer tick the value will be incremented by this
-     *                      amount. When reaching to max value, the current value will be set to min.
-     *                      It should be non-negative, otherwise the behavior is undefined.
+     *                      amount. When reaching to max value, the current value will be set to
+     *                      min. It should be non-negative, otherwise the behavior is undefined.
      */
     StartLinear = 0,
 
-    /** Stops generating of fake data that was triggered by Start commands.
-     *     int32Values[1] - VehicleProperty to which command applies. VHAL will stop the
+    /** Stops linear fake data generation that was triggered by StartLinear commands.
+     *     int32Values[1] - vehicle property to which command applies. VHAL will stop the
      *                      corresponding linear generation for that property.
      */
     StopLinear = 1,
 
     /**
-     * Starts JSON-based fake data generation. Caller must provide a string value specifying
-     * the path to fake value JSON file:
+     * Starts JSON-based fake data generation. It iterates through JSON-encoded VHAL events from a
+     * file and inject them to VHAL. The iteration can be repeated multiple times or infinitely.
+     * Caller must provide additional data:
+     *     int32Values[1] - number of iterations. If it is not provided or -1. The iteration will be
+     *                      repeated infinite times.
      *     stringValue    - path to the fake values JSON file
      */
     StartJson = 2,
 
     /**
-     * Stops JSON-based fake data generation. No additional arguments needed.
+     * Stops JSON-based fake data generation. As multiple JSON-based generation can happen at the
+     * same time. Caller must provide the path of fake value JSON file to stop the corresponding
+     * generation:
+     *     stringValue    - path to the fake values JSON file
      */
     StopJson = 3,
 
@@ -133,8 +161,9 @@
              .prop = toInt(VehicleProperty::INFO_FUEL_CAPACITY),
              .access = VehiclePropertyAccess::READ,
              .changeMode = VehiclePropertyChangeMode::STATIC,
+             .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
          },
-     .initialValue = {.floatValues = {15000}}},
+     .initialValue = {.floatValues = {15000.0f}}},
 
     {.config =
          {
@@ -149,8 +178,9 @@
              .prop = toInt(VehicleProperty::INFO_EV_BATTERY_CAPACITY),
              .access = VehiclePropertyAccess::READ,
              .changeMode = VehiclePropertyChangeMode::STATIC,
+             .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
          },
-     .initialValue = {.floatValues = {150000}}},
+     .initialValue = {.floatValues = {150000.0f}}},
 
     {.config =
          {
@@ -162,6 +192,24 @@
 
     {.config =
          {
+             .prop = toInt(VehicleProperty::INFO_FUEL_DOOR_LOCATION),
+             .access = VehiclePropertyAccess::READ,
+             .changeMode = VehiclePropertyChangeMode::STATIC,
+             .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
+         },
+     .initialValue = {.int32Values = {FUEL_DOOR_REAR_LEFT}}},
+
+    {.config =
+         {
+             .prop = toInt(VehicleProperty::INFO_EV_PORT_LOCATION),
+             .access = VehiclePropertyAccess::READ,
+             .changeMode = VehiclePropertyChangeMode::STATIC,
+             .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
+         },
+     .initialValue = {.int32Values = {CHARGE_PORT_FRONT_LEFT}}},
+
+    {.config =
+         {
              .prop = toInt(VehicleProperty::INFO_MAKE),
              .access = VehiclePropertyAccess::READ,
              .changeMode = VehiclePropertyChangeMode::STATIC,
@@ -179,6 +227,16 @@
 
     {.config =
          {
+             .prop = toInt(VehicleProperty::INFO_DRIVER_SEAT),
+             .access = VehiclePropertyAccess::READ,
+             .changeMode = VehiclePropertyChangeMode::STATIC,
+             // this was a zoned property on an old vhal, but it is meant to be global
+             .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
+         },
+     .initialValue = {.int32Values = {SEAT_1_LEFT}}},
+
+    {.config =
+         {
              .prop = toInt(VehicleProperty::PERF_ODOMETER),
              .access = VehiclePropertyAccess::READ,
              .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
@@ -202,14 +260,16 @@
              .prop = toInt(VehicleProperty::FUEL_LEVEL),
              .access = VehiclePropertyAccess::READ,
              .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+             .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
          },
-     .initialValue = {.floatValues = {15000}}},
+     .initialValue = {.floatValues = {15000.0f}}},
 
     {.config =
          {
              .prop = toInt(VehicleProperty::FUEL_DOOR_OPEN),
-             .access = VehiclePropertyAccess::READ,
+             .access = VehiclePropertyAccess::READ_WRITE,
              .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+             .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
          },
      .initialValue = {.int32Values = {0}}},
 
@@ -218,14 +278,16 @@
              .prop = toInt(VehicleProperty::EV_BATTERY_LEVEL),
              .access = VehiclePropertyAccess::READ,
              .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+             .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
          },
-     .initialValue = {.floatValues = {150000}}},
+     .initialValue = {.floatValues = {150000.0f}}},
 
     {.config =
          {
              .prop = toInt(VehicleProperty::EV_CHARGE_PORT_OPEN),
-             .access = VehiclePropertyAccess::READ,
+             .access = VehiclePropertyAccess::READ_WRITE,
              .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+             .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
          },
      .initialValue = {.int32Values = {0}}},
 
@@ -234,6 +296,7 @@
              .prop = toInt(VehicleProperty::EV_CHARGE_PORT_CONNECTED),
              .access = VehiclePropertyAccess::READ,
              .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+             .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
          },
      .initialValue = {.int32Values = {0}}},
 
@@ -242,8 +305,37 @@
              .prop = toInt(VehicleProperty::EV_BATTERY_INSTANTANEOUS_CHARGE_RATE),
              .access = VehiclePropertyAccess::READ,
              .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+             .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
          },
-     .initialValue = {.floatValues = {0}}},
+     .initialValue = {.floatValues = {0.0f}}},
+
+    {.config =
+         {
+             .prop = toInt(VehicleProperty::RANGE_REMAINING),
+             .access = VehiclePropertyAccess::READ,
+             .changeMode = VehiclePropertyChangeMode::CONTINUOUS,
+             .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
+         },
+     .initialValue = {.floatValues = {100.0f}}},  // units in meters
+
+    {.config =
+         {.prop = toInt(VehicleProperty::TIRE_PRESSURE),
+          .access = VehiclePropertyAccess::READ,
+          .changeMode = VehiclePropertyChangeMode::CONTINUOUS,
+          .areaConfigs =
+              {VehicleAreaConfig{
+                   .areaId = WHEEL_FRONT_LEFT, .minFloatValue = 100.0f, .maxFloatValue = 300.0f,
+               },
+               VehicleAreaConfig{
+                   .areaId = WHEEL_FRONT_RIGHT, .minFloatValue = 100.0f, .maxFloatValue = 300.0f,
+               },
+               VehicleAreaConfig{
+                   .areaId = WHEEL_REAR_LEFT, .minFloatValue = 100.0f, .maxFloatValue = 300.0f,
+               },
+               VehicleAreaConfig{
+                   .areaId = WHEEL_REAR_RIGHT, .minFloatValue = 100.0f, .maxFloatValue = 300.0f,
+               }}},
+     .initialValue = {.floatValues = {200}}},  // units in kPa
 
     {.config =
          {
@@ -266,6 +358,7 @@
              .prop = toInt(VehicleProperty::FUEL_LEVEL_LOW),
              .access = VehiclePropertyAccess::READ,
              .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+             .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
          },
      .initialValue = {.int32Values = {0}}},
 
@@ -355,6 +448,24 @@
                 .areaConfigs = {VehicleAreaConfig{.areaId = HVAC_ALL}}},
      .initialValue = {.int32Values = {toInt(VehicleHvacFanDirection::FACE)}}},
 
+    {.config = {.prop = toInt(VehicleProperty::HVAC_FAN_DIRECTION_AVAILABLE),
+                .access = VehiclePropertyAccess::READ,
+                .changeMode = VehiclePropertyChangeMode::STATIC,
+                .areaConfigs = {VehicleAreaConfig{.areaId = HVAC_ALL}}},
+     .initialValue = {.int32Values = {FAN_DIRECTION_FACE, FAN_DIRECTION_FLOOR,
+                                      FAN_DIRECTION_FACE | FAN_DIRECTION_FLOOR}}},
+
+    {.config = {.prop = toInt(VehicleProperty::HVAC_SEAT_VENTILATION),
+                .access = VehiclePropertyAccess::READ_WRITE,
+                .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                .areaConfigs = {VehicleAreaConfig{
+                                    .areaId = SEAT_1_LEFT, .minInt32Value = 0, .maxInt32Value = 3,
+                                },
+                                VehicleAreaConfig{
+                                    .areaId = SEAT_1_RIGHT, .minInt32Value = 0, .maxInt32Value = 3,
+                                }}},
+     .initialValue = {.int32Values = {0}}},  // 0 is off and +ve values indicate ventilation level.
+
     {.config = {.prop = toInt(VehicleProperty::HVAC_STEERING_WHEEL_HEAT),
                 .access = VehiclePropertyAccess::READ_WRITE,
                 .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
@@ -362,14 +473,29 @@
                     .areaId = (0), .minInt32Value = -2, .maxInt32Value = 2}}},
      .initialValue = {.int32Values = {0}}},  // +ve values for heating and -ve for cooling
 
+    {.config = {.prop = toInt(VehicleProperty::HVAC_SEAT_TEMPERATURE),
+                .access = VehiclePropertyAccess::READ_WRITE,
+                .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                .areaConfigs = {VehicleAreaConfig{
+                                    .areaId = SEAT_1_LEFT, .minInt32Value = -2, .maxInt32Value = 2,
+                                },
+                                VehicleAreaConfig{
+                                    .areaId = SEAT_1_RIGHT, .minInt32Value = -2, .maxInt32Value = 2,
+                                }}},
+     .initialValue = {.int32Values = {0}}},  // +ve values for heating and -ve for cooling
+
     {.config = {.prop = toInt(VehicleProperty::HVAC_TEMPERATURE_SET),
                 .access = VehiclePropertyAccess::READ_WRITE,
                 .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
                 .areaConfigs = {VehicleAreaConfig{
-                                    .areaId = HVAC_LEFT, .minFloatValue = 16, .maxFloatValue = 32,
+                                    .areaId = HVAC_LEFT,
+                                    .minFloatValue = 16,
+                                    .maxFloatValue = 32,
                                 },
                                 VehicleAreaConfig{
-                                    .areaId = HVAC_RIGHT, .minFloatValue = 16, .maxFloatValue = 32,
+                                    .areaId = HVAC_RIGHT,
+                                    .minFloatValue = 16,
+                                    .maxFloatValue = 32,
                                 }}},
      .initialAreaValues = {{HVAC_LEFT, {.floatValues = {16}}},
                            {HVAC_RIGHT, {.floatValues = {20}}}}},
@@ -520,9 +646,126 @@
                    .configArray = {1}},
     },
 
+    {.config =
+         {
+             .prop = toInt(VehicleProperty::HEADLIGHTS_STATE),
+             .access = VehiclePropertyAccess::READ,
+             .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+             .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
+         },
+     .initialValue = {.int32Values = {LIGHT_STATE_ON}}},
+
+    {.config =
+         {
+             .prop = toInt(VehicleProperty::HIGH_BEAM_LIGHTS_STATE),
+             .access = VehiclePropertyAccess::READ,
+             .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+             .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
+         },
+     .initialValue = {.int32Values = {LIGHT_STATE_ON}}},
+
+    {.config =
+         {
+             .prop = toInt(VehicleProperty::FOG_LIGHTS_STATE),
+             .access = VehiclePropertyAccess::READ,
+             .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+             .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
+         },
+     .initialValue = {.int32Values = {LIGHT_STATE_ON}}},
+
+    {.config =
+         {
+             .prop = toInt(VehicleProperty::HAZARD_LIGHTS_STATE),
+             .access = VehiclePropertyAccess::READ,
+             .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+             .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
+         },
+     .initialValue = {.int32Values = {LIGHT_STATE_ON}}},
+
+    {.config =
+         {
+             .prop = toInt(VehicleProperty::HEADLIGHTS_SWITCH),
+             .access = VehiclePropertyAccess::READ_WRITE,
+             .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+             .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
+         },
+     .initialValue = {.int32Values = {LIGHT_SWITCH_AUTO}}},
+
+    {.config =
+         {
+             .prop = toInt(VehicleProperty::HIGH_BEAM_LIGHTS_SWITCH),
+             .access = VehiclePropertyAccess::READ_WRITE,
+             .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+             .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
+         },
+     .initialValue = {.int32Values = {LIGHT_SWITCH_AUTO}}},
+
+    {.config =
+         {
+             .prop = toInt(VehicleProperty::FOG_LIGHTS_SWITCH),
+             .access = VehiclePropertyAccess::READ_WRITE,
+             .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+             .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
+         },
+     .initialValue = {.int32Values = {LIGHT_SWITCH_AUTO}}},
+
+    {.config =
+         {
+             .prop = toInt(VehicleProperty::HAZARD_LIGHTS_SWITCH),
+             .access = VehiclePropertyAccess::READ_WRITE,
+             .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+             .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
+         },
+     .initialValue = {.int32Values = {LIGHT_SWITCH_AUTO}}},
+
     {.config = {.prop = VEHICLE_MAP_SERVICE,
                 .access = VehiclePropertyAccess::READ_WRITE,
                 .changeMode = VehiclePropertyChangeMode::ON_CHANGE}},
+
+    // Example Vendor Extension properties for testing
+    {.config = {.prop = VENDOR_EXTENSION_BOOLEAN_PROPERTY,
+                .access = VehiclePropertyAccess::READ_WRITE,
+                .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                .areaConfigs = {VehicleAreaConfig{.areaId = DOOR_1_LEFT},
+                                VehicleAreaConfig{.areaId = DOOR_1_RIGHT},
+                                VehicleAreaConfig{.areaId = DOOR_2_LEFT},
+                                VehicleAreaConfig{.areaId = DOOR_2_RIGHT}}},
+     .initialAreaValues = {{DOOR_1_LEFT, {.int32Values = {1}}},
+                           {DOOR_1_RIGHT, {.int32Values = {1}}},
+                           {DOOR_2_LEFT, {.int32Values = {0}}},
+                           {DOOR_2_RIGHT, {.int32Values = {0}}}}},
+
+    {.config = {.prop = VENDOR_EXTENSION_FLOAT_PROPERTY,
+                .access = VehiclePropertyAccess::READ_WRITE,
+                .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                .areaConfigs = {VehicleAreaConfig{
+                                    .areaId = HVAC_LEFT, .minFloatValue = -10, .maxFloatValue = 10},
+                                VehicleAreaConfig{.areaId = HVAC_RIGHT,
+                                                  .minFloatValue = -10,
+                                                  .maxFloatValue = 10}}},
+     .initialAreaValues = {{HVAC_LEFT, {.floatValues = {1}}}, {HVAC_RIGHT, {.floatValues = {2}}}}},
+
+    {.config = {.prop = VENDOR_EXTENSION_INT_PROPERTY,
+                .access = VehiclePropertyAccess::READ_WRITE,
+                .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                .areaConfigs = {VehicleAreaConfig{
+                                    .areaId = (int)VehicleAreaWindow::FRONT_WINDSHIELD,
+                                    .minInt32Value = -100,
+                                    .maxInt32Value = 100},
+                                VehicleAreaConfig{.areaId = (int)VehicleAreaWindow::REAR_WINDSHIELD,
+                                                  .minInt32Value = -100,
+                                                  .maxInt32Value = 100},
+                                VehicleAreaConfig{.areaId = (int)VehicleAreaWindow::ROOF_TOP_1,
+                                                  .minInt32Value = -100,
+                                                  .maxInt32Value = 100}}},
+     .initialAreaValues = {{(int)VehicleAreaWindow::FRONT_WINDSHIELD, {.int32Values = {1}}},
+                           {(int)VehicleAreaWindow::REAR_WINDSHIELD, {.int32Values = {0}}},
+                           {(int)VehicleAreaWindow::ROOF_TOP_1, {.int32Values = {-1}}}}},
+
+    {.config = {.prop = VENDOR_EXTENSION_STRING_PROPERTY,
+                .access = VehiclePropertyAccess::READ_WRITE,
+                .changeMode = VehiclePropertyChangeMode::ON_CHANGE},
+     .initialValue = {.stringValue = "Vendor String Property"}},
 };
 
 }  // impl
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.cpp b/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.cpp
index 07695bf..58d8867 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.cpp
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.cpp
@@ -92,10 +92,8 @@
       mHvacPowerProps(std::begin(kHvacPowerProperties), std::end(kHvacPowerProperties)),
       mRecurrentTimer(
           std::bind(&EmulatedVehicleHal::onContinuousPropertyTimer, this, std::placeholders::_1)),
-      mLinearFakeValueGenerator(std::make_unique<LinearFakeValueGenerator>(
-          std::bind(&EmulatedVehicleHal::onFakeValueGenerated, this, std::placeholders::_1))),
-      mJsonFakeValueGenerator(std::make_unique<JsonFakeValueGenerator>(
-          std::bind(&EmulatedVehicleHal::onFakeValueGenerated, this, std::placeholders::_1))) {
+      mGeneratorHub(
+          std::bind(&EmulatedVehicleHal::onFakeValueGenerated, this, std::placeholders::_1)) {
     initStaticConfig();
     for (size_t i = 0; i < arraysize(kVehicleProperties); i++) {
         mPropStore->registerProperty(kVehicleProperties[i].config);
@@ -189,6 +187,7 @@
     }
 
     getEmulatorOrDie()->doSetValueFromClient(propValue);
+    doHalEvent(getValuePool()->obtain(propValue));
 
     return StatusCode::OK;
 }
@@ -343,19 +342,54 @@
     switch (command) {
         case FakeDataCommand::StartLinear: {
             ALOGI("%s, FakeDataCommand::StartLinear", __func__);
-            return mLinearFakeValueGenerator->start(request);
+            if (v.int32Values.size() < 2) {
+                ALOGE("%s: expected property ID in int32Values", __func__);
+                return StatusCode::INVALID_ARG;
+            }
+            if (!v.int64Values.size()) {
+                ALOGE("%s: interval is not provided in int64Values", __func__);
+                return StatusCode::INVALID_ARG;
+            }
+            if (v.floatValues.size() < 3) {
+                ALOGE("%s: expected at least 3 elements in floatValues, got: %zu", __func__,
+                      v.floatValues.size());
+                return StatusCode::INVALID_ARG;
+            }
+            int32_t cookie = v.int32Values[1];
+            mGeneratorHub.registerGenerator(cookie,
+                                            std::make_unique<LinearFakeValueGenerator>(request));
+            break;
         }
         case FakeDataCommand::StartJson: {
             ALOGI("%s, FakeDataCommand::StartJson", __func__);
-            return mJsonFakeValueGenerator->start(request);
+            if (v.stringValue.empty()) {
+                ALOGE("%s: path to JSON file is missing", __func__);
+                return StatusCode::INVALID_ARG;
+            }
+            int32_t cookie = std::hash<std::string>()(v.stringValue);
+            mGeneratorHub.registerGenerator(cookie,
+                                            std::make_unique<JsonFakeValueGenerator>(request));
+            break;
         }
         case FakeDataCommand::StopLinear: {
             ALOGI("%s, FakeDataCommand::StopLinear", __func__);
-            return mLinearFakeValueGenerator->stop(request);
+            if (v.int32Values.size() < 2) {
+                ALOGE("%s: expected property ID in int32Values", __func__);
+                return StatusCode::INVALID_ARG;
+            }
+            int32_t cookie = v.int32Values[1];
+            mGeneratorHub.unregisterGenerator(cookie);
+            break;
         }
         case FakeDataCommand::StopJson: {
             ALOGI("%s, FakeDataCommand::StopJson", __func__);
-            return mJsonFakeValueGenerator->stop(request);
+            if (v.stringValue.empty()) {
+                ALOGE("%s: path to JSON file is missing", __func__);
+                return StatusCode::INVALID_ARG;
+            }
+            int32_t cookie = std::hash<std::string>()(v.stringValue);
+            mGeneratorHub.unregisterGenerator(cookie);
+            break;
         }
         case FakeDataCommand::KeyPress: {
             ALOGI("%s, FakeDataCommand::KeyPress", __func__);
@@ -398,7 +432,7 @@
         mPropStore->writeValue(*updatedPropValue, shouldUpdateStatus);
         auto changeMode = mPropStore->getConfigOrDie(value.prop)->changeMode;
         if (VehiclePropertyChangeMode::ON_CHANGE == changeMode) {
-            doHalEvent(move(updatedPropValue));
+            doHalEvent(std::move(updatedPropValue));
         }
     }
 }
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.h
index c188aef..ec59690 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.h
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.h
@@ -30,8 +30,7 @@
 #include "vhal_v2_0/VehiclePropertyStore.h"
 
 #include "DefaultConfig.h"
-#include "FakeValueGenerator.h"
-
+#include "GeneratorHub.h"
 #include "VehicleEmulator.h"
 
 namespace android {
@@ -85,8 +84,7 @@
     VehiclePropertyStore* mPropStore;
     std::unordered_set<int32_t> mHvacPowerProps;
     RecurrentTimer mRecurrentTimer;
-    std::unique_ptr<FakeValueGenerator> mLinearFakeValueGenerator;
-    std::unique_ptr<FakeValueGenerator> mJsonFakeValueGenerator;
+    GeneratorHub mGeneratorHub;
 };
 
 }  // impl
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/FakeValueGenerator.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/FakeValueGenerator.h
index 1eeb88d..d6ad77d 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/FakeValueGenerator.h
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/FakeValueGenerator.h
@@ -27,28 +27,22 @@
 
 namespace impl {
 
-using OnHalEvent = std::function<void(const VehiclePropValue& event)>;
-using MuxGuard = std::lock_guard<std::mutex>;
-
 class FakeValueGenerator {
 public:
     virtual ~FakeValueGenerator() = default;
-    /**
-     * Starts generating VHAL events
-     *
-     * @param request in VehiclePropValue with required information to start fake data generation
-     * @return StatusCode of the start request
-     */
-    virtual StatusCode start(const VehiclePropValue& request) = 0;
-    /**
-     * Stops generating VHAL events
-     * @param request in VehiclePropValue with required information to stop fake data generation
-     * @return StatusCode of the stop request
-     */
-    virtual StatusCode stop(const VehiclePropValue& request) = 0;
+
+    virtual VehiclePropValue nextEvent() = 0;
+
+    virtual bool hasNext() = 0;
 };
 
-}  // impl
+using Clock = std::chrono::steady_clock;
+using Nanos = std::chrono::nanoseconds;
+using TimePoint = std::chrono::time_point<Clock, Nanos>;
+
+using FakeValueGeneratorPtr = std::unique_ptr<FakeValueGenerator>;
+
+}  // namespace impl
 
 }  // namespace V2_0
 }  // namespace vehicle
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/GeneratorHub.cpp b/automotive/vehicle/2.0/default/impl/vhal_v2_0/GeneratorHub.cpp
new file mode 100644
index 0000000..548285a
--- /dev/null
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/GeneratorHub.cpp
@@ -0,0 +1,105 @@
+/*
+ * 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.
+ */
+
+#define LOG_TAG "GeneratorHub"
+
+#include <log/log.h>
+
+#include "GeneratorHub.h"
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace vehicle {
+namespace V2_0 {
+
+namespace impl {
+
+GeneratorHub::GeneratorHub(const OnHalEvent& onHalEvent)
+    : mOnHalEvent(onHalEvent), mThread(&GeneratorHub::run, this) {}
+
+void GeneratorHub::registerGenerator(int32_t cookie, FakeValueGeneratorPtr generator) {
+    {
+        std::lock_guard<std::mutex> g(mLock);
+        // Register only if the generator can produce event
+        if (generator->hasNext()) {
+            // Push the next event if it is a new generator
+            if (mGenerators.find(cookie) == mGenerators.end()) {
+                ALOGI("%s: Registering new generator, cookie: %d", __func__, cookie);
+                mEventQueue.push({cookie, generator->nextEvent()});
+            }
+            mGenerators[cookie] = std::move(generator);
+            ALOGI("%s: Registered generator, cookie: %d", __func__, cookie);
+        }
+    }
+    mCond.notify_one();
+}
+
+void GeneratorHub::unregisterGenerator(int32_t cookie) {
+    {
+        std::lock_guard<std::mutex> g(mLock);
+        mGenerators.erase(cookie);
+    }
+    mCond.notify_one();
+    ALOGI("%s: Unregistered generator, cookie: %d", __func__, cookie);
+}
+
+void GeneratorHub::run() {
+    while (true) {
+        std::unique_lock<std::mutex> g(mLock);
+        // Pop events whose generator does not exist (may be already unregistered)
+        while (!mEventQueue.empty()
+               && mGenerators.find(mEventQueue.top().cookie) == mGenerators.end()) {
+             mEventQueue.pop();
+        }
+        // Wait until event queue is not empty
+        mCond.wait(g, [this] { return !mEventQueue.empty(); });
+
+        const VhalEvent& curEvent = mEventQueue.top();
+
+        TimePoint eventTime(Nanos(curEvent.val.timestamp));
+        // Wait until the soonest event happen
+        if (mCond.wait_until(g, eventTime) != std::cv_status::timeout) {
+        // It is possible that a new generator is registered and produced a sooner event, or current
+        // generator is unregistered, in this case the thread will re-evaluate the soonest event
+            ALOGI("Something happened while waiting");
+            continue;
+        }
+        // Now it's time to handle current event.
+        mOnHalEvent(curEvent.val);
+        // Update queue by popping current event and producing next event from the same generator
+        int32_t cookie = curEvent.cookie;
+        mEventQueue.pop();
+        if (hasNext(cookie)) {
+            mEventQueue.push({cookie, mGenerators[cookie]->nextEvent()});
+        } else {
+            ALOGI("%s: Generator ended, unregister it, cookie: %d", __func__, cookie);
+            mGenerators.erase(cookie);
+        }
+    }
+}
+
+bool GeneratorHub::hasNext(int32_t cookie) {
+    return mGenerators.find(cookie) != mGenerators.end() && mGenerators[cookie]->hasNext();
+}
+
+}  // namespace impl
+
+}  // namespace V2_0
+}  // namespace vehicle
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/GeneratorHub.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/GeneratorHub.h
new file mode 100644
index 0000000..dcf6a4f
--- /dev/null
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/GeneratorHub.h
@@ -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.
+ */
+
+#ifndef android_hardware_automotive_vehicle_V2_0_impl_GeneratorHub_H_
+#define android_hardware_automotive_vehicle_V2_0_impl_GeneratorHub_H_
+
+#include <atomic>
+#include <chrono>
+#include <condition_variable>
+#include <iostream>
+#include <queue>
+#include <thread>
+#include <unordered_map>
+
+#include "FakeValueGenerator.h"
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace vehicle {
+namespace V2_0 {
+
+namespace impl {
+
+/**
+ * This is the scheduler for all VHAL event generators. It manages all generators and uses priority
+ * queue to maintain generated events ordered by timestamp. The scheduler uses a single thread to
+ * keep querying and updating the event queue to make sure events from all generators are produced
+ * in order.
+ */
+class GeneratorHub {
+private:
+    struct VhalEvent {
+        int32_t cookie;  // Cookie is used to find the associated generator.
+        VehiclePropValue val;
+    };
+    // Comparator used by priority queue to keep track of soonest event.
+    struct GreaterByTime {
+        bool operator()(const VhalEvent& lhs, const VhalEvent& rhs) const {
+            return lhs.val.timestamp > rhs.val.timestamp;
+        }
+    };
+
+    using OnHalEvent = std::function<void(const VehiclePropValue& event)>;
+
+public:
+    GeneratorHub(const OnHalEvent& onHalEvent);
+    ~GeneratorHub() = default;
+
+    /**
+     * Register a new generator. The generator will be discarded if it could not produce next event.
+     * The existing generator will be overridden if it has the same cookie.
+     */
+    void registerGenerator(int32_t cookie, FakeValueGeneratorPtr generator);
+
+    void unregisterGenerator(int32_t cookie);
+
+private:
+    /**
+     * Main loop of the single thread to producing event and updating event queue.
+     */
+    void run();
+
+    bool hasNext(int32_t cookie);
+
+private:
+    std::priority_queue<VhalEvent, std::vector<VhalEvent>, GreaterByTime> mEventQueue;
+    std::unordered_map<int32_t, FakeValueGeneratorPtr> mGenerators;
+    OnHalEvent mOnHalEvent;
+
+    mutable std::mutex mLock;
+    std::condition_variable mCond;
+    std::thread mThread;
+};
+
+}  // namespace impl
+
+}  // namespace V2_0
+}  // namespace vehicle
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
+
+#endif  // android_hardware_automotive_vehicle_V2_0_impl_GeneratorHub_H_
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/JsonFakeValueGenerator.cpp b/automotive/vehicle/2.0/default/impl/vhal_v2_0/JsonFakeValueGenerator.cpp
index 88b8f86..b8fd2ba 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/JsonFakeValueGenerator.cpp
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/JsonFakeValueGenerator.cpp
@@ -17,6 +17,8 @@
 #define LOG_TAG "JsonFakeValueGenerator"
 
 #include <fstream>
+#include <type_traits>
+#include <typeinfo>
 
 #include <log/log.h>
 #include <vhal_v2_0/VehicleUtils.h>
@@ -31,57 +33,48 @@
 
 namespace impl {
 
-JsonFakeValueGenerator::JsonFakeValueGenerator(const OnHalEvent& onHalEvent)
-    : mOnHalEvent(onHalEvent), mThread(&JsonFakeValueGenerator::loop, this) {}
-
-JsonFakeValueGenerator::~JsonFakeValueGenerator() {
-    mStopRequested = true;
-    {
-        MuxGuard g(mLock);
-        mGenCfg.index = 0;
-        mGenCfg.events.clear();
-    }
-    mCond.notify_one();
-    if (mThread.joinable()) {
-        mThread.join();
-    }
-}
-
-StatusCode JsonFakeValueGenerator::start(const VehiclePropValue& request) {
+JsonFakeValueGenerator::JsonFakeValueGenerator(const VehiclePropValue& request) {
     const auto& v = request.value;
-    if (v.stringValue.empty()) {
-        ALOGE("%s: path to JSON file is missing", __func__);
-        return StatusCode::INVALID_ARG;
-    }
     const char* file = v.stringValue.c_str();
     std::ifstream ifs(file);
     if (!ifs) {
         ALOGE("%s: couldn't open %s for parsing.", __func__, file);
-        return StatusCode::INTERNAL_ERROR;
     }
-    std::vector<VehiclePropValue> fakeVhalEvents = parseFakeValueJson(ifs);
-
-    {
-        MuxGuard g(mLock);
-        mGenCfg = {0, fakeVhalEvents};
-    }
-    mCond.notify_one();
-    return StatusCode::OK;
+    mGenCfg = {
+        .index = 0,
+        .events = parseFakeValueJson(ifs),
+    };
+    // Iterate infinitely if repetition number is not provided
+    mNumOfIterations = v.int32Values.size() < 2 ? -1 : v.int32Values[1];
 }
 
-StatusCode JsonFakeValueGenerator::stop(const VehiclePropValue& request) {
-    const auto& v = request.value;
-    if (!v.stringValue.empty()) {
-        ALOGI("%s: %s", __func__, v.stringValue.c_str());
+VehiclePropValue JsonFakeValueGenerator::nextEvent() {
+    VehiclePropValue generatedValue;
+    if (!hasNext()) {
+        return generatedValue;
     }
+    TimePoint eventTime = Clock::now();
+    if (mGenCfg.index != 0) {
+        // All events (start from 2nd one) are supposed to happen in the future with a delay
+        // equals to the duration between previous and current event.
+        eventTime += Nanos(mGenCfg.events[mGenCfg.index].timestamp -
+                           mGenCfg.events[mGenCfg.index - 1].timestamp);
+    }
+    generatedValue = mGenCfg.events[mGenCfg.index];
+    generatedValue.timestamp = eventTime.time_since_epoch().count();
 
-    {
-        MuxGuard g(mLock);
+    mGenCfg.index++;
+    if (mGenCfg.index == mGenCfg.events.size()) {
         mGenCfg.index = 0;
-        mGenCfg.events.clear();
+        if (mNumOfIterations > 0) {
+            mNumOfIterations--;
+        }
     }
-    mCond.notify_one();
-    return StatusCode::OK;
+    return generatedValue;
+}
+
+bool JsonFakeValueGenerator::hasNext() {
+    return mNumOfIterations != 0 && mGenCfg.events.size() > 0;
 }
 
 std::vector<VehiclePropValue> JsonFakeValueGenerator::parseFakeValueJson(std::istream& is) {
@@ -131,9 +124,14 @@
             case VehiclePropertyType::STRING:
                 value.stringValue = rawEventValue.asString();
                 break;
+            case VehiclePropertyType::MIXED:
+                copyMixedValueJson(value, rawEventValue);
+                if (isDiagnosticProperty(event.prop)) {
+                    value.bytes = generateDiagnosticBytes(value);
+                }
+                break;
             default:
-                ALOGE("%s: unsupported type for property: 0x%x with value: %s", __func__,
-                      event.prop, rawEventValue.asString().c_str());
+                ALOGE("%s: unsupported type for property: 0x%x", __func__, event.prop);
                 continue;
         }
         fakeVhalEvents.push_back(event);
@@ -141,30 +139,60 @@
     return fakeVhalEvents;
 }
 
-void JsonFakeValueGenerator::loop() {
-    static constexpr auto kInvalidTime = TimePoint(Nanos::max());
+void JsonFakeValueGenerator::copyMixedValueJson(VehiclePropValue::RawValue& dest,
+                                                const Json::Value& jsonValue) {
+    copyJsonArray(dest.int32Values, jsonValue["int32Values"]);
+    copyJsonArray(dest.int64Values, jsonValue["int64Values"]);
+    copyJsonArray(dest.floatValues, jsonValue["floatValues"]);
+    dest.stringValue = jsonValue["stringValue"].asString();
+}
 
-    while (!mStopRequested) {
-        auto nextEventTime = kInvalidTime;
-        {
-            MuxGuard g(mLock);
-            if (mGenCfg.index < mGenCfg.events.size()) {
-                mOnHalEvent(mGenCfg.events[mGenCfg.index]);
-            }
-            if (!mGenCfg.events.empty() && mGenCfg.index < mGenCfg.events.size() - 1) {
-                Nanos intervalNano =
-                    static_cast<Nanos>(mGenCfg.events[mGenCfg.index + 1].timestamp -
-                                       mGenCfg.events[mGenCfg.index].timestamp);
-                nextEventTime = Clock::now() + intervalNano;
-            }
-            mGenCfg.index++;
+template <typename T>
+void JsonFakeValueGenerator::copyJsonArray(hidl_vec<T>& dest, const Json::Value& jsonArray) {
+    dest.resize(jsonArray.size());
+    for (Json::Value::ArrayIndex i = 0; i < jsonArray.size(); i++) {
+        if (std::is_same<T, int32_t>::value) {
+            dest[i] = jsonArray[i].asInt();
+        } else if (std::is_same<T, int64_t>::value) {
+            dest[i] = jsonArray[i].asInt64();
+        } else if (std::is_same<T, float>::value) {
+            dest[i] = jsonArray[i].asFloat();
         }
-
-        std::unique_lock<std::mutex> g(mLock);
-        mCond.wait_until(g, nextEventTime);
     }
 }
 
+bool JsonFakeValueGenerator::isDiagnosticProperty(int32_t prop) {
+    return prop == (int32_t)VehicleProperty::OBD2_LIVE_FRAME ||
+           prop == (int32_t)VehicleProperty::OBD2_FREEZE_FRAME;
+}
+
+hidl_vec<uint8_t> JsonFakeValueGenerator::generateDiagnosticBytes(
+    const VehiclePropValue::RawValue& diagnosticValue) {
+    size_t byteSize = ((size_t)DiagnosticIntegerSensorIndex::LAST_SYSTEM_INDEX +
+                       (size_t)DiagnosticFloatSensorIndex::LAST_SYSTEM_INDEX + 2);
+    hidl_vec<uint8_t> bytes(byteSize % 8 == 0 ? byteSize / 8 : byteSize / 8 + 1);
+
+    auto& int32Values = diagnosticValue.int32Values;
+    for (size_t i = 0; i < int32Values.size(); i++) {
+        if (int32Values[i] != 0) {
+            setBit(bytes, i);
+        }
+    }
+
+    auto& floatValues = diagnosticValue.floatValues;
+    for (size_t i = 0; i < floatValues.size(); i++) {
+        if (floatValues[i] != 0.0) {
+            setBit(bytes, i + (size_t)DiagnosticIntegerSensorIndex::LAST_SYSTEM_INDEX + 1);
+        }
+    }
+    return bytes;
+}
+
+void JsonFakeValueGenerator::setBit(hidl_vec<uint8_t>& bytes, size_t idx) {
+    uint8_t mask = 1 << (idx % 8);
+    bytes[idx / 8] |= mask;
+}
+
 }  // namespace impl
 
 }  // namespace V2_0
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/JsonFakeValueGenerator.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/JsonFakeValueGenerator.h
index 51da4c5..70575f7 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/JsonFakeValueGenerator.h
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/JsonFakeValueGenerator.h
@@ -17,11 +17,8 @@
 #ifndef android_hardware_automotive_vehicle_V2_0_impl_JsonFakeValueGenerator_H_
 #define android_hardware_automotive_vehicle_V2_0_impl_JsonFakeValueGenerator_H_
 
-#include <atomic>
 #include <chrono>
-#include <condition_variable>
 #include <iostream>
-#include <thread>
 
 #include <json/json.h>
 
@@ -37,32 +34,33 @@
 
 class JsonFakeValueGenerator : public FakeValueGenerator {
 private:
-    using Nanos = std::chrono::nanoseconds;
-    using Clock = std::chrono::steady_clock;
-    using TimePoint = std::chrono::time_point<Clock, Nanos>;
-
     struct GeneratorCfg {
         size_t index;
         std::vector<VehiclePropValue> events;
     };
 
 public:
-    JsonFakeValueGenerator(const OnHalEvent& onHalEvent);
-    ~JsonFakeValueGenerator();
-    StatusCode start(const VehiclePropValue& request) override;
-    StatusCode stop(const VehiclePropValue& request) override;
+    JsonFakeValueGenerator(const VehiclePropValue& request);
+    ~JsonFakeValueGenerator() = default;
+
+    VehiclePropValue nextEvent();
+
+    bool hasNext();
 
 private:
     std::vector<VehiclePropValue> parseFakeValueJson(std::istream& is);
-    void loop();
+    void copyMixedValueJson(VehiclePropValue::RawValue& dest, const Json::Value& jsonValue);
+
+    template <typename T>
+    void copyJsonArray(hidl_vec<T>& dest, const Json::Value& jsonArray);
+
+    bool isDiagnosticProperty(int32_t prop);
+    hidl_vec<uint8_t> generateDiagnosticBytes(const VehiclePropValue::RawValue& diagnosticValue);
+    void setBit(hidl_vec<uint8_t>& bytes, size_t idx);
 
 private:
-    OnHalEvent mOnHalEvent;
-    std::thread mThread;
-    mutable std::mutex mLock;
-    std::condition_variable mCond;
     GeneratorCfg mGenCfg;
-    std::atomic_bool mStopRequested{false};
+    int32_t mNumOfIterations;
 };
 
 }  // namespace impl
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/LinearFakeValueGenerator.cpp b/automotive/vehicle/2.0/default/impl/vhal_v2_0/LinearFakeValueGenerator.cpp
index 8cb9322..7bdc97c 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/LinearFakeValueGenerator.cpp
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/LinearFakeValueGenerator.cpp
@@ -29,101 +29,48 @@
 
 namespace impl {
 
-LinearFakeValueGenerator::LinearFakeValueGenerator(const OnHalEvent& onHalEvent)
-    : mOnHalEvent(onHalEvent),
-      mRecurrentTimer(std::bind(&LinearFakeValueGenerator::onTimer, this, std::placeholders::_1)) {}
-
-StatusCode LinearFakeValueGenerator::start(const VehiclePropValue& request) {
+LinearFakeValueGenerator::LinearFakeValueGenerator(const VehiclePropValue& request) {
     const auto& v = request.value;
-    if (v.int32Values.size() < 2) {
-        ALOGE("%s: expected property ID in int32Values", __func__);
-        return StatusCode::INVALID_ARG;
-    }
-    int32_t propId = v.int32Values[1];
-
-    if (!v.int64Values.size()) {
-        ALOGE("%s: interval is not provided in int64Values", __func__);
-        return StatusCode::INVALID_ARG;
-    }
-    auto interval = std::chrono::nanoseconds(v.int64Values[0]);
-
-    if (v.floatValues.size() < 3) {
-        ALOGE("%s: expected at least 3 elements in floatValues, got: %zu", __func__,
-              v.floatValues.size());
-        return StatusCode::INVALID_ARG;
-    }
-    float initialValue = v.floatValues[0];
-    float dispersion = v.floatValues[1];
-    float increment = v.floatValues[2];
-
-    MuxGuard g(mLock);
-    removeLocked(propId);
-    mGenCfg.insert({propId, GeneratorCfg{
-                                .initialValue = initialValue,
-                                .currentValue = initialValue,
-                                .dispersion = dispersion,
-                                .increment = increment,}});
-
-    mRecurrentTimer.registerRecurrentEvent(interval, propId);
-    return StatusCode::OK;
+    mGenCfg = GeneratorCfg{
+        .propId = v.int32Values[1],
+        .initialValue = v.floatValues[0],
+        .currentValue = v.floatValues[0],
+        .dispersion = v.floatValues[1],
+        .increment = v.floatValues[2],
+        .interval = Nanos(v.int64Values[0]),
+    };
 }
 
-StatusCode LinearFakeValueGenerator::stop(const VehiclePropValue& request) {
-    const auto& v = request.value;
-    if (v.int32Values.size() < 2) {
-        ALOGE("%s: expected property ID in int32Values", __func__);
-        return StatusCode::INVALID_ARG;
+VehiclePropValue LinearFakeValueGenerator::nextEvent() {
+    mGenCfg.currentValue += mGenCfg.increment;
+    if (mGenCfg.currentValue > mGenCfg.initialValue + mGenCfg.dispersion) {
+        mGenCfg.currentValue = mGenCfg.initialValue - mGenCfg.dispersion;
     }
-    int32_t propId = v.int32Values[1];
-
-    MuxGuard g(mLock);
-    if (propId == 0) {
-        // Remove all.
-        for (auto&& it : mGenCfg) {
-            removeLocked(it.first);
-        }
-    } else {
-        removeLocked(propId);
+    VehiclePropValue event = {.prop = mGenCfg.propId};
+    auto& value = event.value;
+    switch (getPropType(event.prop)) {
+        case VehiclePropertyType::INT32:
+            value.int32Values.resize(1);
+            value.int32Values[0] = static_cast<int32_t>(mGenCfg.currentValue);
+            break;
+        case VehiclePropertyType::INT64:
+            value.int64Values.resize(1);
+            value.int64Values[0] = static_cast<int64_t>(mGenCfg.currentValue);
+            break;
+        case VehiclePropertyType::FLOAT:
+            value.floatValues.resize(1);
+            value.floatValues[0] = mGenCfg.currentValue;
+            break;
+        default:
+            ALOGE("%s: unsupported property type for 0x%x", __func__, event.prop);
     }
-    return StatusCode::OK;
+    TimePoint eventTime = Clock::now() + mGenCfg.interval;
+    event.timestamp = eventTime.time_since_epoch().count();
+    return event;
 }
 
-void LinearFakeValueGenerator::removeLocked(int propId) {
-    if (mGenCfg.erase(propId)) {
-        mRecurrentTimer.unregisterRecurrentEvent(propId);
-    }
-}
-
-void LinearFakeValueGenerator::onTimer(const std::vector<int32_t>& properties) {
-    MuxGuard g(mLock);
-
-    for (int32_t propId : properties) {
-        auto& cfg = mGenCfg[propId];
-        cfg.currentValue += cfg.increment;
-        if (cfg.currentValue > cfg.initialValue + cfg.dispersion) {
-            cfg.currentValue = cfg.initialValue - cfg.dispersion;
-        }
-        VehiclePropValue event = {.prop = propId};
-        auto& value = event.value;
-        switch (getPropType(event.prop)) {
-            case VehiclePropertyType::INT32:
-                value.int32Values.resize(1);
-                value.int32Values[0] = static_cast<int32_t>(cfg.currentValue);
-                break;
-            case VehiclePropertyType::INT64:
-                value.int64Values.resize(1);
-                value.int64Values[0] = static_cast<int64_t>(cfg.currentValue);
-                break;
-            case VehiclePropertyType::FLOAT:
-                value.floatValues.resize(1);
-                value.floatValues[0] = cfg.currentValue;
-                break;
-            default:
-                ALOGE("%s: unsupported property type for 0x%x", __func__, event.prop);
-                continue;
-        }
-        mOnHalEvent(event);
-    }
+bool LinearFakeValueGenerator::hasNext() {
+    return true;
 }
 
 }  // namespace impl
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/LinearFakeValueGenerator.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/LinearFakeValueGenerator.h
index fe6d097..d3b666d 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/LinearFakeValueGenerator.h
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/LinearFakeValueGenerator.h
@@ -17,8 +17,6 @@
 #ifndef android_hardware_automotive_vehicle_V2_0_impl_LinearFakeValueGenerator_H_
 #define android_hardware_automotive_vehicle_V2_0_impl_LinearFakeValueGenerator_H_
 
-#include <vhal_v2_0/RecurrentTimer.h>
-
 #include "FakeValueGenerator.h"
 
 namespace android {
@@ -36,27 +34,24 @@
     // to the client.
 
     struct GeneratorCfg {
-        float initialValue;  //
+        int32_t propId;
+        float initialValue;
         float currentValue;  //  Should be in range (initialValue +/- dispersion).
         float dispersion;    //  Defines minimum and maximum value based on initial value.
         float increment;     //  Value that we will be added to currentValue with each timer tick.
+        Nanos interval;
     };
 
 public:
-    LinearFakeValueGenerator(const OnHalEvent& onHalEvent);
+    LinearFakeValueGenerator(const VehiclePropValue& request);
     ~LinearFakeValueGenerator() = default;
-    StatusCode start(const VehiclePropValue& request) override;
-    StatusCode stop(const VehiclePropValue& request) override;
+
+    VehiclePropValue nextEvent();
+
+    bool hasNext();
 
 private:
-    void removeLocked(int propId);
-    void onTimer(const std::vector<int32_t>& properties);
-
-private:
-    mutable std::mutex mLock;
-    OnHalEvent mOnHalEvent;
-    RecurrentTimer mRecurrentTimer;
-    std::unordered_map<int32_t, GeneratorCfg> mGenCfg;
+    GeneratorCfg mGenCfg;
 };
 
 }  // namespace impl
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/PipeComm.cpp b/automotive/vehicle/2.0/default/impl/vhal_v2_0/PipeComm.cpp
index 5a9b254..f024287 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/PipeComm.cpp
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/PipeComm.cpp
@@ -33,23 +33,28 @@
 
 namespace impl {
 
-PipeComm::PipeComm() {
-    // Initialize member vars
-    mPipeFd = -1;
-}
+PipeComm::PipeComm(MessageProcessor* messageProcessor) : CommConn(messageProcessor), mPipeFd(-1) {}
 
-
-int PipeComm::open() {
+void PipeComm::start() {
     int fd = qemu_pipe_open(CAR_SERVICE_NAME);
 
     if (fd < 0) {
         ALOGE("%s: Could not open connection to service: %s %d", __FUNCTION__, strerror(errno), fd);
-        return -errno;
+        return;
     }
 
-    ALOGI("%s: OPENED PIPE, fd=%d", __FUNCTION__, fd);
+    ALOGI("%s: Starting pipe connection, fd=%d", __FUNCTION__, fd);
     mPipeFd = fd;
-    return 0;
+
+    CommConn::start();
+}
+
+void PipeComm::stop() {
+    if (mPipeFd > 0) {
+        ::close(mPipeFd);
+        mPipeFd = -1;
+    }
+    CommConn::stop();
 }
 
 std::vector<uint8_t> PipeComm::read() {
@@ -60,16 +65,13 @@
     numBytes = qemu_pipe_frame_recv(mPipeFd, msg.data(), msg.size());
 
     if (numBytes == MAX_RX_MSG_SZ) {
-        ALOGE("%s:  Received max size = %d", __FUNCTION__, MAX_RX_MSG_SZ);
+        ALOGE("%s: Received max size = %d", __FUNCTION__, MAX_RX_MSG_SZ);
     } else if (numBytes > 0) {
         msg.resize(numBytes);
         return msg;
     } else {
         ALOGD("%s: Connection terminated on pipe %d, numBytes=%d", __FUNCTION__, mPipeFd, numBytes);
-        {
-            std::lock_guard<std::mutex> lock(mMutex);
-            mPipeFd = -1;
-        }
+        mPipeFd = -1;
     }
 
     return std::vector<uint8_t>();
@@ -78,11 +80,8 @@
 int PipeComm::write(const std::vector<uint8_t>& data) {
     int retVal = 0;
 
-    {
-        std::lock_guard<std::mutex> lock(mMutex);
-        if (mPipeFd != -1) {
-            retVal = qemu_pipe_frame_send(mPipeFd, data.data(), data.size());
-        }
+    if (mPipeFd != -1) {
+        retVal = qemu_pipe_frame_send(mPipeFd, data.data(), data.size());
     }
 
     if (retVal < 0) {
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/PipeComm.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/PipeComm.h
index bcd32d0..c8eabb8 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/PipeComm.h
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/PipeComm.h
@@ -19,7 +19,7 @@
 
 #include <mutex>
 #include <vector>
-#include "CommBase.h"
+#include "CommConn.h"
 
 namespace android {
 namespace hardware {
@@ -30,38 +30,25 @@
 namespace impl {
 
 /**
- * PipeComm uses a qemu pipe interface to connect to the Goldfish Emulator.
+ * PipeComm opens a qemu pipe to connect to the emulator, allowing the emulator UI to access the
+ * Vehicle HAL and simulate changing properties.
+ *
+ * Since the pipe is a client, it directly implements CommConn, and only one PipeComm can be open
+ * at a time.
  */
-class PipeComm : public CommBase {
-public:
-    PipeComm();
+class PipeComm : public CommConn {
+   public:
+    PipeComm(MessageProcessor* messageProcessor);
 
-    /**
-     * Opens a pipe and begins listening.
-     *
-     * @return int Returns 0 on success.
-     */
-    int open() override;
+    void start() override;
+    void stop() override;
 
-    /**
-     * Blocking call to read data from the connection.
-     *
-     * @return std::vector<uint8_t> Serialized protobuf data received from emulator.  This will be
-     *              an empty vector if the connection was closed or some other error occurred.
-     */
     std::vector<uint8_t> read() override;
-
-    /**
-     * Transmits a string of data to the emulator.
-     *
-     * @param data Serialized protobuf data to transmit.
-     *
-     * @return int Number of bytes transmitted, or -1 if failed.
-     */
     int write(const std::vector<uint8_t>& data) override;
 
-private:
-    std::mutex mMutex;
+    inline bool isOpen() override { return mPipeFd > 0; }
+
+   private:
     int mPipeFd;
 };
 
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/SocketComm.cpp b/automotive/vehicle/2.0/default/impl/vhal_v2_0/SocketComm.cpp
index 42c1c78..9eb8894 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/SocketComm.cpp
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/SocketComm.cpp
@@ -18,6 +18,7 @@
 
 #include <android/hardware/automotive/vehicle/2.0/IVehicle.h>
 #include <android/log.h>
+#include <arpa/inet.h>
 #include <log/log.h>
 #include <netinet/in.h>
 #include <sys/socket.h>
@@ -35,45 +36,46 @@
 
 namespace impl {
 
-SocketComm::SocketComm() {
-    // Initialize member vars
-    mCurSockFd = -1;
-    mExit      =  0;
-    mSockFd    = -1;
-}
-
+SocketComm::SocketComm(MessageProcessor* messageProcessor)
+    : mListenFd(-1), mMessageProcessor(messageProcessor) {}
 
 SocketComm::~SocketComm() {
-    stop();
 }
 
-int SocketComm::connect() {
-    sockaddr_in cliAddr;
-    socklen_t cliLen = sizeof(cliAddr);
-    int cSockFd = accept(mSockFd, reinterpret_cast<struct sockaddr*>(&cliAddr), &cliLen);
-
-    if (cSockFd >= 0) {
-        {
-            std::lock_guard<std::mutex> lock(mMutex);
-            mCurSockFd = cSockFd;
-        }
-        ALOGD("%s: Incoming connection received on socket %d", __FUNCTION__, cSockFd);
-    } else {
-        cSockFd = -1;
+void SocketComm::start() {
+    if (!listen()) {
+        return;
     }
 
-    return cSockFd;
+    mListenThread = std::make_unique<std::thread>(std::bind(&SocketComm::listenThread, this));
 }
 
-int SocketComm::open() {
+void SocketComm::stop() {
+    if (mListenFd > 0) {
+        ::close(mListenFd);
+        if (mListenThread->joinable()) {
+            mListenThread->join();
+        }
+        mListenFd = -1;
+    }
+}
+
+void SocketComm::sendMessage(emulator::EmulatorMessage const& msg) {
+    std::lock_guard<std::mutex> lock(mMutex);
+    for (std::unique_ptr<SocketConn> const& conn : mOpenConnections) {
+        conn->sendMessage(msg);
+    }
+}
+
+bool SocketComm::listen() {
     int retVal;
     struct sockaddr_in servAddr;
 
-    mSockFd = socket(AF_INET, SOCK_STREAM, 0);
-    if (mSockFd < 0) {
-        ALOGE("%s: socket() failed, mSockFd=%d, errno=%d", __FUNCTION__, mSockFd, errno);
-        mSockFd = -1;
-        return -errno;
+    mListenFd = socket(AF_INET, SOCK_STREAM, 0);
+    if (mListenFd < 0) {
+        ALOGE("%s: socket() failed, mSockFd=%d, errno=%d", __FUNCTION__, mListenFd, errno);
+        mListenFd = -1;
+        return false;
     }
 
     memset(&servAddr, 0, sizeof(servAddr));
@@ -81,82 +83,114 @@
     servAddr.sin_addr.s_addr = INADDR_ANY;
     servAddr.sin_port = htons(DEBUG_SOCKET);
 
-    retVal = bind(mSockFd, reinterpret_cast<struct sockaddr*>(&servAddr), sizeof(servAddr));
+    retVal = bind(mListenFd, reinterpret_cast<struct sockaddr*>(&servAddr), sizeof(servAddr));
     if(retVal < 0) {
         ALOGE("%s: Error on binding: retVal=%d, errno=%d", __FUNCTION__, retVal, errno);
+        close(mListenFd);
+        mListenFd = -1;
+        return false;
+    }
+
+    ALOGI("%s: Listening for connections on port %d", __FUNCTION__, DEBUG_SOCKET);
+    ::listen(mListenFd, 1);
+    return true;
+}
+
+SocketConn* SocketComm::accept() {
+    sockaddr_in cliAddr;
+    socklen_t cliLen = sizeof(cliAddr);
+    int sfd = ::accept(mListenFd, reinterpret_cast<struct sockaddr*>(&cliAddr), &cliLen);
+
+    if (sfd > 0) {
+        char addr[INET_ADDRSTRLEN];
+        inet_ntop(AF_INET, &cliAddr.sin_addr, addr, INET_ADDRSTRLEN);
+
+        ALOGD("%s: Incoming connection received from %s:%d", __FUNCTION__, addr, cliAddr.sin_port);
+        return new SocketConn(mMessageProcessor, sfd);
+    }
+
+    return nullptr;
+}
+
+void SocketComm::listenThread() {
+    while (true) {
+        SocketConn* conn = accept();
+        if (conn == nullptr) {
+            return;
+        }
+
+        conn->start();
+        {
+            std::lock_guard<std::mutex> lock(mMutex);
+            mOpenConnections.push_back(std::unique_ptr<SocketConn>(conn));
+        }
+    }
+}
+
+/**
+ * Called occasionally to clean up connections that have been closed.
+ */
+void SocketComm::removeClosedConnections() {
+    std::lock_guard<std::mutex> lock(mMutex);
+    std::remove_if(mOpenConnections.begin(), mOpenConnections.end(),
+                   [](std::unique_ptr<SocketConn> const& c) { return !c->isOpen(); });
+}
+
+SocketConn::SocketConn(MessageProcessor* messageProcessor, int sfd)
+    : CommConn(messageProcessor), mSockFd(sfd) {}
+
+/**
+ * Reads, in a loop, exactly numBytes from the given fd. If the connection is closed, returns
+ * an empty buffer, otherwise will return exactly the given number of bytes.
+ */
+std::vector<uint8_t> readExactly(int fd, int numBytes) {
+    std::vector<uint8_t> buffer(numBytes);
+    int totalRead = 0;
+    int offset = 0;
+    while (totalRead < numBytes) {
+        int numRead = ::read(fd, &buffer.data()[offset], numBytes - offset);
+        if (numRead == 0) {
+            buffer.resize(0);
+            return buffer;
+        }
+
+        totalRead += numRead;
+    }
+    return buffer;
+}
+
+/**
+ * Reads an int, guaranteed to be non-zero, from the given fd. If the connection is closed, returns
+ * -1.
+ */
+int32_t readInt(int fd) {
+    std::vector<uint8_t> buffer = readExactly(fd, sizeof(int32_t));
+    if (buffer.size() == 0) {
+        return -1;
+    }
+
+    int32_t value = *reinterpret_cast<int32_t*>(buffer.data());
+    return ntohl(value);
+}
+
+std::vector<uint8_t> SocketConn::read() {
+    int32_t msgSize = readInt(mSockFd);
+    if (msgSize <= 0) {
+        ALOGD("%s: Connection terminated on socket %d", __FUNCTION__, mSockFd);
+        return std::vector<uint8_t>();
+    }
+
+    return readExactly(mSockFd, msgSize);
+}
+
+void SocketConn::stop() {
+    if (mSockFd > 0) {
         close(mSockFd);
         mSockFd = -1;
-        return -errno;
-    }
-
-    listen(mSockFd, 1);
-
-    // Set the socket to be non-blocking so we can poll it continouously
-    fcntl(mSockFd, F_SETFL, O_NONBLOCK);
-
-    return 0;
-}
-
-std::vector<uint8_t> SocketComm::read() {
-    int32_t msgSize;
-    int numBytes = 0;
-
-    // This is a variable length message.
-    // Read the number of bytes to rx over the socket
-    numBytes = ::read(mCurSockFd, &msgSize, sizeof(msgSize));
-    msgSize = ntohl(msgSize);
-
-    if (numBytes != sizeof(msgSize)) {
-        // This happens when connection is closed
-        ALOGD("%s: numBytes=%d, expected=4", __FUNCTION__, numBytes);
-        ALOGD("%s: Connection terminated on socket %d", __FUNCTION__, mCurSockFd);
-        {
-            std::lock_guard<std::mutex> lock(mMutex);
-            mCurSockFd = -1;
-        }
-
-        return std::vector<uint8_t>();
-    }
-
-    std::vector<uint8_t> msg = std::vector<uint8_t>(msgSize);
-
-    numBytes = ::read(mCurSockFd, msg.data(), msgSize);
-
-    if ((numBytes == msgSize) && (msgSize > 0)) {
-        // Received a message.
-        return msg;
-    } else {
-        // This happens when connection is closed
-        ALOGD("%s: numBytes=%d, msgSize=%d", __FUNCTION__, numBytes, msgSize);
-        ALOGD("%s: Connection terminated on socket %d", __FUNCTION__, mCurSockFd);
-        {
-            std::lock_guard<std::mutex> lock(mMutex);
-            mCurSockFd = -1;
-        }
-
-        return std::vector<uint8_t>();
     }
 }
 
-void SocketComm::stop() {
-    if (mExit == 0) {
-        std::lock_guard<std::mutex> lock(mMutex);
-        mExit = 1;
-
-        // Close emulator socket if it is open
-        if (mCurSockFd != -1) {
-            close(mCurSockFd);
-            mCurSockFd = -1;
-        }
-
-        if (mSockFd != -1) {
-            close(mSockFd);
-            mSockFd = -1;
-        }
-    }
-}
-
-int SocketComm::write(const std::vector<uint8_t>& data) {
+int SocketConn::write(const std::vector<uint8_t>& data) {
     static constexpr int MSG_HEADER_LEN = 4;
     int retVal = 0;
     union {
@@ -168,19 +202,17 @@
     msgLen = static_cast<uint32_t>(data.size());
     msgLen = htonl(msgLen);
 
-    std::lock_guard<std::mutex> lock(mMutex);
-    if (mCurSockFd != -1) {
-        retVal = ::write(mCurSockFd, msgLenBytes, MSG_HEADER_LEN);
+    if (mSockFd > 0) {
+        retVal = ::write(mSockFd, msgLenBytes, MSG_HEADER_LEN);
 
         if (retVal == MSG_HEADER_LEN) {
-            retVal = ::write(mCurSockFd, data.data(), data.size());
+            retVal = ::write(mSockFd, data.data(), data.size());
         }
     }
 
     return retVal;
 }
 
-
 }  // impl
 
 }  // namespace V2_0
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/SocketComm.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/SocketComm.h
index 12cfb29..88b852b 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/SocketComm.h
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/SocketComm.h
@@ -18,8 +18,9 @@
 #define android_hardware_automotive_vehicle_V2_0_impl_SocketComm_H_
 
 #include <mutex>
+#include <thread>
 #include <vector>
-#include "CommBase.h"
+#include "CommConn.h"
 
 namespace android {
 namespace hardware {
@@ -29,29 +30,60 @@
 
 namespace impl {
 
+class SocketConn;
+
 /**
- * SocketComm opens a socket via adb's TCP port forwarding to enable a Host PC to connect to
- * the VehicleHAL.
+ * SocketComm opens a socket, and listens for connections from clients. Typically the client will be
+ * adb's TCP port-forwarding to enable a host PC to connect to the VehicleHAL.
  */
-class SocketComm : public CommBase {
-public:
-    SocketComm();
+class SocketComm {
+   public:
+    SocketComm(MessageProcessor* messageProcessor);
     virtual ~SocketComm();
 
+    void start();
+    void stop();
+
     /**
-     * Creates a connection to the other side.
+     * Serialized and send the given message to all connected clients.
+     */
+    void sendMessage(emulator::EmulatorMessage const& msg);
+
+   private:
+    int mListenFd;
+    std::unique_ptr<std::thread> mListenThread;
+    std::vector<std::unique_ptr<SocketConn>> mOpenConnections;
+    MessageProcessor* mMessageProcessor;
+    std::mutex mMutex;
+
+    /**
+     * Opens the socket and begins listening.
+     *
+     * @return bool Returns true on success.
+     */
+    bool listen();
+
+    /**
+     * Blocks and waits for a connection from a client, returns a new SocketConn with the connection
+     * or null, if the connection has been closed.
      *
      * @return int Returns fd or socket number if connection is successful.
      *              Otherwise, returns -1 if no connection is availble.
      */
-    int connect() override;
+    SocketConn* accept();
 
-    /**
-     * Opens a socket and begins listening.
-     *
-     * @return int Returns 0 on success.
-     */
-    int open() override;
+    void listenThread();
+
+    void removeClosedConnections();
+};
+
+/**
+ * SocketConn represents a single connection to a client.
+ */
+class SocketConn : public CommConn {
+   public:
+    SocketConn(MessageProcessor* messageProcessor, int sfd);
+    virtual ~SocketConn() = default;
 
     /**
      * Blocking call to read data from the connection.
@@ -75,10 +107,9 @@
      */
     int write(const std::vector<uint8_t>& data) override;
 
-private:
-    int mCurSockFd;
-    std::atomic<int> mExit;
-    std::mutex mMutex;
+    inline bool isOpen() override { return mSockFd > 0; }
+
+   private:
     int mSockFd;
 };
 
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/VehicleEmulator.cpp b/automotive/vehicle/2.0/default/impl/vhal_v2_0/VehicleEmulator.cpp
index bf7be09..356a6b9 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/VehicleEmulator.cpp
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/VehicleEmulator.cpp
@@ -16,9 +16,10 @@
 #define LOG_TAG "VehicleEmulator_v2_0"
 #include <android/log.h>
 
-#include <algorithm>
 #include <android-base/properties.h>
+#include <log/log.h>
 #include <utils/SystemClock.h>
+#include <algorithm>
 
 #include <vhal_v2_0/VehicleUtils.h>
 
@@ -35,32 +36,45 @@
 
 namespace impl {
 
-std::unique_ptr<CommBase> CommFactory::create() {
-    bool isEmulator = android::base::GetBoolProperty("ro.kernel.qemu", false);
+VehicleEmulator::VehicleEmulator(EmulatedVehicleHalIface* hal) : mHal{hal} {
+    mHal->registerEmulator(this);
 
-    if (isEmulator) {
-        return std::make_unique<PipeComm>();
-    } else {
-        return std::make_unique<SocketComm>();
+    ALOGI("Starting SocketComm");
+    mSocketComm = std::make_unique<SocketComm>(this);
+    mSocketComm->start();
+
+    if (android::base::GetBoolProperty("ro.kernel.qemu", false)) {
+        ALOGI("Starting PipeComm");
+        mPipeComm = std::make_unique<PipeComm>(this);
+        mPipeComm->start();
     }
 }
 
 VehicleEmulator::~VehicleEmulator() {
-    mExit = true;   // Notify thread to finish and wait for it to terminate.
-    mComm->stop();  // Close emulator socket if it is open.
-    if (mThread.joinable()) mThread.join();
+    mSocketComm->stop();
+    if (mPipeComm) {
+        mPipeComm->stop();
+    }
 }
 
+/**
+ * This is called by the HAL when a property changes. We need to notify our clients that it has
+ * changed.
+ */
 void VehicleEmulator::doSetValueFromClient(const VehiclePropValue& propValue) {
     emulator::EmulatorMessage msg;
     emulator::VehiclePropValue *val = msg.add_value();
     populateProtoVehiclePropValue(val, &propValue);
     msg.set_status(emulator::RESULT_OK);
     msg.set_msg_type(emulator::SET_PROPERTY_ASYNC);
-    txMsg(msg);
+
+    mSocketComm->sendMessage(msg);
+    if (mPipeComm) {
+        mPipeComm->sendMessage(msg);
+    }
 }
 
-void VehicleEmulator::doGetConfig(VehicleEmulator::EmulatorMessage& rxMsg,
+void VehicleEmulator::doGetConfig(VehicleEmulator::EmulatorMessage const& rxMsg,
                                   VehicleEmulator::EmulatorMessage& respMsg) {
     std::vector<VehiclePropConfig> configs = mHal->listProperties();
     emulator::VehiclePropGet getProp = rxMsg.prop(0);
@@ -79,7 +93,7 @@
     }
 }
 
-void VehicleEmulator::doGetConfigAll(VehicleEmulator::EmulatorMessage& /* rxMsg */,
+void VehicleEmulator::doGetConfigAll(VehicleEmulator::EmulatorMessage const& /* rxMsg */,
                                      VehicleEmulator::EmulatorMessage& respMsg) {
     std::vector<VehiclePropConfig> configs = mHal->listProperties();
 
@@ -92,8 +106,8 @@
     }
 }
 
-void VehicleEmulator::doGetProperty(VehicleEmulator::EmulatorMessage& rxMsg,
-                                    VehicleEmulator::EmulatorMessage& respMsg)  {
+void VehicleEmulator::doGetProperty(VehicleEmulator::EmulatorMessage const& rxMsg,
+                                    VehicleEmulator::EmulatorMessage& respMsg) {
     int32_t areaId = 0;
     emulator::VehiclePropGet getProp = rxMsg.prop(0);
     int32_t propId = getProp.prop();
@@ -119,8 +133,8 @@
     respMsg.set_status(status);
 }
 
-void VehicleEmulator::doGetPropertyAll(VehicleEmulator::EmulatorMessage& /* rxMsg */,
-                                       VehicleEmulator::EmulatorMessage& respMsg)  {
+void VehicleEmulator::doGetPropertyAll(VehicleEmulator::EmulatorMessage const& /* rxMsg */,
+                                       VehicleEmulator::EmulatorMessage& respMsg) {
     respMsg.set_msg_type(emulator::GET_PROPERTY_ALL_RESP);
     respMsg.set_status(emulator::RESULT_OK);
 
@@ -132,7 +146,7 @@
     }
 }
 
-void VehicleEmulator::doSetProperty(VehicleEmulator::EmulatorMessage& rxMsg,
+void VehicleEmulator::doSetProperty(VehicleEmulator::EmulatorMessage const& rxMsg,
                                     VehicleEmulator::EmulatorMessage& respMsg) {
     emulator::VehiclePropValue protoVal = rxMsg.value(0);
     VehiclePropValue val = {
@@ -173,58 +187,28 @@
     respMsg.set_status(halRes ? emulator::RESULT_OK : emulator::ERROR_INVALID_PROPERTY);
 }
 
-void VehicleEmulator::txMsg(emulator::EmulatorMessage& txMsg) {
-    int numBytes = txMsg.ByteSize();
-    std::vector<uint8_t> msg(static_cast<size_t>(numBytes));
-
-    if (!txMsg.SerializeToArray(msg.data(), static_cast<int32_t>(msg.size()))) {
-        ALOGE("%s: SerializeToString failed!", __func__);
-        return;
-    }
-
-    if (mExit) {
-        ALOGW("%s: unable to transmit a message, connection closed", __func__);
-        return;
-    }
-
-    // Send the message
-    int retVal = mComm->write(msg);
-    if (retVal < 0) {
-        ALOGE("%s: Failed to tx message: retval=%d, errno=%d", __func__, retVal, errno);
-    }
-}
-
-void VehicleEmulator::parseRxProtoBuf(std::vector<uint8_t>& msg) {
-    emulator::EmulatorMessage rxMsg;
-    emulator::EmulatorMessage respMsg;
-
-    if (rxMsg.ParseFromArray(msg.data(), static_cast<int32_t>(msg.size()))) {
-        switch (rxMsg.msg_type()) {
-            case emulator::GET_CONFIG_CMD:
-                doGetConfig(rxMsg, respMsg);
-                break;
-            case emulator::GET_CONFIG_ALL_CMD:
-                doGetConfigAll(rxMsg, respMsg);
-                break;
-            case emulator::GET_PROPERTY_CMD:
-                doGetProperty(rxMsg, respMsg);
-                break;
-            case emulator::GET_PROPERTY_ALL_CMD:
-                doGetPropertyAll(rxMsg, respMsg);
-                break;
-            case emulator::SET_PROPERTY_CMD:
-                doSetProperty(rxMsg, respMsg);
-                break;
-            default:
-                ALOGW("%s: Unknown message received, type = %d", __func__, rxMsg.msg_type());
-                respMsg.set_status(emulator::ERROR_UNIMPLEMENTED_CMD);
-                break;
-        }
-
-        // Send the reply
-        txMsg(respMsg);
-    } else {
-        ALOGE("%s: ParseFromString() failed. msgSize=%d", __func__, static_cast<int>(msg.size()));
+void VehicleEmulator::processMessage(emulator::EmulatorMessage const& rxMsg,
+                                     emulator::EmulatorMessage& respMsg) {
+    switch (rxMsg.msg_type()) {
+        case emulator::GET_CONFIG_CMD:
+            doGetConfig(rxMsg, respMsg);
+            break;
+        case emulator::GET_CONFIG_ALL_CMD:
+            doGetConfigAll(rxMsg, respMsg);
+            break;
+        case emulator::GET_PROPERTY_CMD:
+            doGetProperty(rxMsg, respMsg);
+            break;
+        case emulator::GET_PROPERTY_ALL_CMD:
+            doGetPropertyAll(rxMsg, respMsg);
+            break;
+        case emulator::SET_PROPERTY_CMD:
+            doSetProperty(rxMsg, respMsg);
+            break;
+        default:
+            ALOGW("%s: Unknown message received, type = %d", __func__, rxMsg.msg_type());
+            respMsg.set_status(emulator::ERROR_UNIMPLEMENTED_CMD);
+            break;
     }
 }
 
@@ -316,40 +300,6 @@
     }
 }
 
-void VehicleEmulator::rxMsg() {
-    while (!mExit) {
-        std::vector<uint8_t> msg = mComm->read();
-
-        if (msg.size() > 0) {
-            // Received a message.
-            parseRxProtoBuf(msg);
-        } else {
-            // This happens when connection is closed
-            ALOGD("%s: msgSize=%zu", __func__, msg.size());
-            break;
-        }
-    }
-}
-
-void VehicleEmulator::rxThread() {
-    if (mExit) return;
-
-    int retVal = mComm->open();
-    if (retVal != 0) mExit = true;
-
-    // Comms are properly opened
-    while (!mExit) {
-        retVal = mComm->connect();
-
-        if (retVal >= 0) {
-            rxMsg();
-        }
-
-        // Check every 100ms for a new connection
-        std::this_thread::sleep_for(std::chrono::milliseconds(100));
-    }
-}
-
 }  // impl
 
 }  // namespace V2_0
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/VehicleEmulator.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/VehicleEmulator.h
index 1a8cfe2..58e387a 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/VehicleEmulator.h
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/VehicleEmulator.h
@@ -24,7 +24,9 @@
 
 #include "vhal_v2_0/VehicleHal.h"
 
-#include "CommBase.h"
+#include "CommConn.h"
+#include "PipeComm.h"
+#include "SocketComm.h"
 #include "VehicleHalProto.pb.h"
 
 namespace android {
@@ -61,48 +63,36 @@
     VehicleEmulator* mEmulator;
 };
 
-struct CommFactory {
-    static std::unique_ptr<CommBase> create();
-};
-
 /**
  * Emulates vehicle by providing controlling interface from host side either through ADB or Pipe.
  */
-class VehicleEmulator {
-public:
-    VehicleEmulator(EmulatedVehicleHalIface* hal,
-                    std::unique_ptr<CommBase> comm = CommFactory::create())
-            : mHal { hal },
-              mComm(comm.release()),
-              mThread { &VehicleEmulator::rxThread, this} {
-        mHal->registerEmulator(this);
-    }
+class VehicleEmulator : public MessageProcessor {
+   public:
+    VehicleEmulator(EmulatedVehicleHalIface* hal);
     virtual ~VehicleEmulator();
 
     void doSetValueFromClient(const VehiclePropValue& propValue);
+    void processMessage(emulator::EmulatorMessage const& rxMsg,
+                        emulator::EmulatorMessage& respMsg) override;
 
-private:
+   private:
+    friend class ConnectionThread;
     using EmulatorMessage = emulator::EmulatorMessage;
 
-    void doGetConfig(EmulatorMessage& rxMsg, EmulatorMessage& respMsg);
-    void doGetConfigAll(EmulatorMessage& rxMsg, EmulatorMessage& respMsg);
-    void doGetProperty(EmulatorMessage& rxMsg, EmulatorMessage& respMsg);
-    void doGetPropertyAll(EmulatorMessage& rxMsg, EmulatorMessage& respMsg);
-    void doSetProperty(EmulatorMessage& rxMsg, EmulatorMessage& respMsg);
-    void txMsg(emulator::EmulatorMessage& txMsg);
-    void parseRxProtoBuf(std::vector<uint8_t>& msg);
+    void doGetConfig(EmulatorMessage const& rxMsg, EmulatorMessage& respMsg);
+    void doGetConfigAll(EmulatorMessage const& rxMsg, EmulatorMessage& respMsg);
+    void doGetProperty(EmulatorMessage const& rxMsg, EmulatorMessage& respMsg);
+    void doGetPropertyAll(EmulatorMessage const& rxMsg, EmulatorMessage& respMsg);
+    void doSetProperty(EmulatorMessage const& rxMsg, EmulatorMessage& respMsg);
     void populateProtoVehicleConfig(emulator::VehiclePropConfig* protoCfg,
                                     const VehiclePropConfig& cfg);
     void populateProtoVehiclePropValue(emulator::VehiclePropValue* protoVal,
                                        const VehiclePropValue* val);
-    void rxMsg();
-    void rxThread();
 
 private:
-    std::atomic<bool> mExit { false };
     EmulatedVehicleHalIface* mHal;
-    std::unique_ptr<CommBase> mComm;
-    std::thread mThread;
+    std::unique_ptr<SocketComm> mSocketComm;
+    std::unique_ptr<PipeComm> mPipeComm;
 };
 
 }  // impl
diff --git a/automotive/vehicle/2.0/types.hal b/automotive/vehicle/2.0/types.hal
index 57179df..7fe8377 100644
--- a/automotive/vehicle/2.0/types.hal
+++ b/automotive/vehicle/2.0/types.hal
@@ -306,6 +306,22 @@
         | VehicleArea:GLOBAL),
 
     /**
+     * Speed of the vehicle for displays
+     *
+     * Some cars display a slightly slower speed than the actual speed.  This is
+     * usually displayed on the speedometer.
+     *
+     * @change_mode VehiclePropertyChangeMode:CONTINUOUS
+     * @access VehiclePropertyAccess:READ
+     * @unit VehicleUnit:METER_PER_SEC
+     */
+    PERF_VEHICLE_SPEED_DISPLAY = (
+        0x0208
+        | VehiclePropertyGroup:SYSTEM
+        | VehiclePropertyType:FLOAT
+        | VehicleArea:GLOBAL),
+
+    /**
      * Temperature of engine coolant
      *
      * @change_mode VehiclePropertyChangeMode:CONTINUOUS
@@ -587,7 +603,13 @@
      *
      * This property corresponds to the low fuel warning on the dashboard.
      * Once FUEL_LEVEL_LOW is set, it should not be cleared until more fuel is
-     * added to the vehicle.
+     * added to the vehicle.  This property may take into account all fuel
+     * sources for a vehicle - for example:
+     *
+     *   For a gas powered vehicle, this property is based soley on gas level.
+     *   For a battery powered vehicle, this property is based solely on battery level.
+     *   For a hybrid vehicle, this property may be based on the combination of gas and battery
+     *      levels, at the OEM's discretion.
      *
      * @change_mode VehiclePropertyChangeMode:ON_CHANGE
      * @access VehiclePropertyAccess:READ
diff --git a/biometrics/face/1.0/Android.bp b/biometrics/face/1.0/Android.bp
new file mode 100644
index 0000000..45dbad9
--- /dev/null
+++ b/biometrics/face/1.0/Android.bp
@@ -0,0 +1,27 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.biometrics.face@1.0",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "types.hal",
+        "IBiometricsFace.hal",
+        "IBiometricsFaceClientCallback.hal",
+    ],
+    interfaces: [
+        "android.hidl.base@1.0",
+    ],
+    types: [
+        "FaceAcquiredInfo",
+        "FaceError",
+        "OptionalBool",
+        "OptionalUint64",
+        "Status",
+        "UserHandle",
+    ],
+    gen_java: true,
+}
+
diff --git a/biometrics/face/1.0/IBiometricsFace.hal b/biometrics/face/1.0/IBiometricsFace.hal
new file mode 100644
index 0000000..f39eaeb
--- /dev/null
+++ b/biometrics/face/1.0/IBiometricsFace.hal
@@ -0,0 +1,232 @@
+/*
+ * 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.
+ */
+
+package android.hardware.biometrics.face@1.0;
+
+import IBiometricsFaceClientCallback;
+
+// TODO(b/78538290): Update comments with state machine transitions when ready.
+// TODO(b/78537981): Update comments with callback interaction contract.
+// TODO(b/79496983): Update comments with status returns fully enumerated.
+/**
+ * The HAL interface for biometric face authentication.
+ */
+interface IBiometricsFace {
+
+    /**
+     * Sets the current client callback.
+     *
+     * Registers a user function that must receive notifications from the HAL.
+     * There is usually only one client (FaceService). This call must block
+     * if the HAL state machine is in busy state until the HAL leaves the
+     * busy state.
+     *
+     * All callback methods pass a deviceId to differentiate callback
+     * invocations in the case where multiple sensors exist.
+     *
+     * @param clientCallback The client defined callback to register.
+     * @return result, with its "value" parameter representing a "deviceId",
+     *     which must be unique for a given sensor.
+     */
+    @callflow(next={"setActiveUser"})
+    @entry
+    setCallback(IBiometricsFaceClientCallback clientCallback)
+        generates (OptionalUint64 result);
+
+    /**
+     * Sets the active user, which all subsequent HAL operations are applied to.
+     *
+     * HAL service implementors must ensure that operations are restricted to
+     * the given user. Clients must not call any part of this interface, except
+     * for setCallback(), without first having set an active user. The
+     * implementation is responsible for cancelling the current operation and
+     * returning to the idle state. Calling this method with the same userId
+     * should have no effect on the state machine.
+     *
+     * @param userId A non-negative user identifier that must be unique and
+     *     persistent for a given user.
+     * @param storePath filesystem path to the template storage directory.
+     */
+    @callflow(next={"authenticate", "generateChallenge", "enumerate", "remove"})
+    setActiveUser(int32_t userId, string storePath) generates (Status status);
+
+    /**
+     * Begins a secure transaction request, e.g. enrollment.
+     *
+     * Generates a unique and cryptographically secure random token used to
+     * indicate the start of a secure transaction. generateChallenge() and
+     * revokeChallenge() specify a pin/pattern/password cleared time window where
+     * the secure transaction is allowed.
+     *
+     * generateChallenge() generates a challenge which must then be wrapped by the
+     * gatekeeper after verifying a successful strong authentication attempt,
+     * which generates a Hardware Authentication Token. The challenge prevents
+     * spoofing and replay attacks and ensures that we only update a user’s face
+     * template if the operation was preceded by some kind of strong credential
+     * confirmation (e.g. device password).
+     *
+     * @return result, with its "value" parameter representing a "challenge": a
+     *     unique and cryptographically secure random token.
+     */
+    @callflow(next={"enroll", "revokeChallenge", "setRequireAttention"})
+    generateChallenge() generates (OptionalUint64 result);
+
+    /**
+     * Enrolls a user's face.
+     *
+     * Note that this interface permits implementations where multiple faces can
+     * be enrolled for a single user. However, allowing multiple faces to be
+     * enrolled can be a severe security vulnerability and hence, most
+     * implementations must ensure that only a single face be enrolled at a
+     * given time. Multi-enrollment must only be used where there is a clear
+     * necessity for a shared use case, e.g. TVs or cars.
+     *
+     * Note that the Hardware Authentication Token must still be valid after
+     * this call, and must be explicitly invalidated by a call to
+     * revokeChallenge(). This allows clients to immediately reattempt
+     * enrollment (for example, if a user wasn’t satisfied with their enrollment)
+     * without having to go through another strong authentication flow.
+     *
+     * This method triggers the IBiometricsFaceClientCallback#onEnrollResult()
+     * method.
+     *
+     * @param hat A valid Hardware Authentication Token, generated as a result
+     *     of a generateChallenge() challenge being wrapped by the gatekeeper
+     *     after a sucessful strong authentication request.
+     * @param timeoutSec A timeout in seconds, after which this enrollment
+     *     attempt is cancelled. Note that the client still needs to
+     *     call revokeChallenge() to terminate the enrollment session.
+     * @param requireAttention When set to true, requires user attention (e.g.
+     *     eyes open and looking at the device) for enrollment to complete, as
+     *     well as subsequent authentication. This is expected to be enabled by
+     *     default to improve security and decrease falsing (unintentional face
+     *     detection). This feature can be disabled at the user's request
+     *     during enrollment, e.g. for accessibility reasons. When enabled,
+     *     the FaceAcquiredInfo#POOR_GAZE message must be sent when the user's
+     *     attention has not been established. The UI should inform the user
+     *     to look at the device.
+     * @return status The status of this method call.
+     */
+    @callflow(next={"cancel", "enroll", "revokeChallenge", "remove"})
+    enroll(vec<uint8_t> hat, uint32_t timeoutSec, bool requireAttention)
+        generates (Status status);
+
+    /**
+     * Finishes the secure transaction by invalidating the challenge generated
+     * by generateChallenge().
+     *
+     * Clients must call this method once enrollment is complete, and the user's
+     * face template no longer needs to be updated.
+     *
+     * @return status The status of this method call.
+     */
+    @callflow(next={"authenticate", "setActiveUser", "enumerate", "remove"})
+    revokeChallenge() generates (Status status);
+
+    /**
+     * Requires that all subsequent authenticate calls to first have the
+     * user's attention. This method does not affect enroll, which has its
+     * own requireAttention parameter.
+     *
+     * Changes the state of previous enrollment setting. Because this may
+     * decrease security, the user must enter their password before this method
+     * is invoked (see @param HAT). The driver must verify the HAT before
+     * changing the requireAttention state.
+     * Note: In some cases it may not be possible to change the state of this
+     * flag without re-enrolling. For example, if the user didn't provide
+     * attention during the original enrollment. This flag reflects the same
+     * persistent state as the one passed to enroll().
+     *
+     * @param requireAttention When set to true, requires user attention for
+     *     authentication to succeed.
+     * @param hat A valid Hardware Authentication Token, generated as a result
+     *     of getChallenge().
+     * @return status The status of this method call.
+     */
+    setRequireAttention(bool requireAttention, vec<uint8_t> hat)
+        generates(Status status);
+
+    /**
+     * Retrieves the current requireAttention state.
+     *
+     * @return result, with its value parameter representing the current
+     *     requireAttention state.
+     */
+    getRequireAttention(vec<uint8_t> hat) generates (OptionalBool result);
+
+    /**
+     * Returns an identifier associated with the current face set.
+     *
+     * The authenticator ID must change whenever a new face is enrolled. The
+     * authenticator ID must not be changed when a face is deleted. The
+     * authenticator ID must be an entropy-encoded random number which all
+     * current templates are tied to. The authenticator ID must be immutable
+     * outside of an active enrollment window to prevent replay attacks.
+     *
+     * @return result, with its value parameter representing an
+     *     "authenticatorId": an identifier associated to the user's current
+     *     face enrollment.
+     */
+    @callflow(next={"authenticate"})
+    getAuthenticatorId() generates (OptionalUint64 result);
+
+    /**
+     * Cancels a pending enrollment or authentication request.
+     *
+     * @return status The status of this method call.
+     */
+    @callflow(next={"authenticate", "enroll", "enumerate", "remove",
+        "setActiveUser"})
+    cancel() generates (Status status);
+
+    /**
+     * Enumerates all face templates associated with the active user.
+     *
+     * The onEnumerate() callback method is invoked once for each face template
+     * found.
+     *
+     * @return status The status of this method call.
+     */
+    @callflow(next={"remove", "enroll", "authenticate", "setActiveUser"})
+    enumerate() generates (Status status);
+
+    /**
+     * Removes a face template or all face templates associated with the active
+     * user.
+     *
+     * This method triggers the IBiometricsFaceClientCallback#onRemoved() method.
+     *
+     * @param faceId The id correpsonding to the face to be removed; or 0 if all
+     *    faces are to be removed.
+     * @return status The status of this method call.
+     */
+    @callflow(next={"enumerate", "authenticate", "cancel", "getAuthenticatorId",
+        "setActiveUser"})
+    remove(uint32_t faceId) generates (Status status);
+
+    /**
+     * Authenticates the active user.
+     *
+     * An optional operationId can be specified as a token from the transaction
+     * being authorized.
+     *
+     * @param operationId A non-zero operation id associated with a crypto
+     * object instance; or 0 if not being used.
+     * @return status The status of this method call.
+     */
+    @callflow(next={"cancel", "generateChallenge", "remove"})
+    authenticate(uint64_t operationId) generates (Status status);
+};
diff --git a/biometrics/face/1.0/IBiometricsFaceClientCallback.hal b/biometrics/face/1.0/IBiometricsFaceClientCallback.hal
new file mode 100644
index 0000000..93848c5
--- /dev/null
+++ b/biometrics/face/1.0/IBiometricsFaceClientCallback.hal
@@ -0,0 +1,116 @@
+/*
+ * 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.
+ */
+
+package android.hardware.biometrics.face@1.0;
+
+/**
+ * This callback interface is used by clients to recieve updates from the face
+ * HAL.
+ */
+interface IBiometricsFaceClientCallback {
+
+    /**
+     * A callback invoked when one enrollment step has been completed.
+     *
+     * @param deviceId A unique id associated with the HAL implementation
+     *     service that processed this enrollment step.
+     * @param faceId The id of the face template being enrolled.
+     * @param userId The active user id for the template being enrolled.
+     * @param remaining The number of remaining steps before enrolllment is
+     *     complete or 0 if enrollment has completed successfully.
+     */
+    oneway onEnrollResult(uint64_t deviceId, uint32_t faceId, int32_t userId,
+        uint32_t remaining);
+
+    /**
+     * A callback invoked when a face has been successfully authenticated.
+     *
+     * @param deviceId A unique id associated with the HAL implementation
+     *     service that processed this autentication attempt.
+     * @param faceId The id of the face template that passed the authentication
+     *     challenge.
+     * @param userId The active user id for the authenticated face.
+     * @param token The hardware authentication token associated with this
+     *     authenticate operation.
+     */
+    oneway onAuthenticated(uint64_t deviceId, uint32_t faceId, int32_t userId,
+        vec<uint8_t> token);
+
+    /**
+     * A callback invoked when a face is acquired.
+     *
+     * If a non-critical, recoverable error occurs during an enrollment or
+     * authentication attempt, the HAL implementation must invoke this callback
+     * to allow clients to inform the user that some actionable change must be
+     * made.
+     *
+     * @param deviceId A unique id associated with the HAL implementation
+     *     service that acquired a face.
+     * @param userId The id of the active user associated with the attempted
+     *     face acquisition.
+     * @param acquiredInfo A message about the quality of the acquired image.
+     * @param vendorCode An optional vendor-specific message. This is only valid
+     *     when acquiredInfo == FaceAcquiredInfo.VENDOR. This message is opaque
+     *     to the framework, and vendors must provide code to handle it. For
+     *     example this can be used to guide enrollment in Settings or provide
+     *     a message during authentication that is vendor-specific. The vendor
+     *     is expected to provide help strings to cover all known values.
+     */
+     oneway onAcquired(uint64_t deviceId, int32_t userId,
+         FaceAcquiredInfo acquiredInfo, int32_t vendorCode);
+
+    /**
+     * A callback invoked when an error has occured.
+     *
+     * @param deviceId A unique id associated with the HAL implementation
+     *     service where this error occured.
+     * @param userId The id of the active user when the error occured, or
+     *     UserHandle::NONE if an active user had not been set yet.
+     * @param error A message about the error that occurred.
+     * @param vendorCode An optional, vendor-speicifc error message. Only valid
+     *     when error == FaceError.VENDOR. This message is opaque to the
+     *     framework, and vendors must provide code to handle it. For example,
+     *     this scan be used to show the user an error message specific to the
+     *     device. The vendor is expected to provide error strings to cover
+     *     all known values.
+     */
+    oneway onError(uint64_t deviceId, int32_t userId, FaceError error,
+        int32_t vendorCode);
+
+    /**
+     * A callback invoked when a face template has been removed.
+     *
+     * @param deviceId A unique id associated with the HAL implementation
+     *     service that processed this removal.
+     * @param faceId The id of the face template that was removed.
+     * @param userId The active user id for the removed face template.
+     * @param remaining The number of face templates remaining after this
+     *     removal, or 0 if there are no more.
+     */
+    oneway onRemoved(uint64_t deviceId, uint32_t faceId, int32_t userId,
+        uint32_t remaining);
+
+    /**
+     * A callback invoked to enumerate all current face templates.
+     *
+     * @param deviceId A unique id associated with the HAL implementation
+     *     service that processed this enumeration.
+     * @param faceIds A list of ids of all currently enrolled face templates.
+     * @param userId The active user id for the enumerated face template.
+     */
+    oneway onEnumerate(uint64_t deviceId, vec<uint32_t> faceIds,
+        int32_t userId);
+};
diff --git a/biometrics/face/1.0/types.hal b/biometrics/face/1.0/types.hal
new file mode 100644
index 0000000..92cb70d
--- /dev/null
+++ b/biometrics/face/1.0/types.hal
@@ -0,0 +1,277 @@
+/*
+ * 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.
+ */
+
+package android.hardware.biometrics.face@1.0;
+
+/*
+ * In the event setActiveUser is not called, all error messages will return
+ * this userId.
+ */
+enum UserHandle : int32_t {
+    NONE = -1
+};
+
+/**
+ * Status codes returned directly by the HIDL method calls upon critical errors
+ * where the callback cannot be invoked. Most errors should sent through the
+ * onError callback using one of the FaceErrors below.
+ */
+enum Status : uint32_t {
+    /**
+     * The method was invoked successfully.
+     */
+    OK = 0,
+
+    /**
+     * One of the arguments to the method call is invalid.
+     */
+    ILLEGAL_ARGUMENT = 1,
+
+    /**
+     * This face HAL does not support this operation.
+     */
+    OPERATION_NOT_SUPPORTED = 2,
+
+    /**
+     * The HAL has encountered an internal error and cannot complete the request.
+     */
+    INTERNAL_ERROR = 3,
+
+    /**
+     * The operation could not be completed because there are no enrolled
+     * templates.
+     */
+    NOT_ENROLLED = 4
+};
+
+/**
+ * Face errors represent events that can't be immediately recovered by user
+ * intervention. These are returned in the onError callback.
+ *
+ * Upon receiving a face error, clients must terminate the current operation and
+ * notify the user where possible.
+ */
+enum FaceError : int32_t {
+
+    /**
+     * A hardware error has occured that cannot be resolved. Try again later.
+     */
+    HW_UNAVAILABLE = 1,
+
+    /**
+     * The current enroll or authenticate operation could not be completed;
+     * the sensor was unable to process the current image.
+     */
+    UNABLE_TO_PROCESS = 2,
+
+    /**
+     * The current operation took too long to complete. This is intended to
+     * prevent programs from blocking the face HAL indefinitely. The timeout is
+     * framework and sensor-specific, but is generally on the order of 30
+     * seconds.
+     */
+    TIMEOUT = 3,
+
+    /**
+     * The current operation could not be completed because there is not enough
+     * storage space remaining to do so.
+     */
+    NO_SPACE = 4,
+
+    /**
+     * The current operation has been cancelled. This may happen if a new
+     * request (authenticate, remove) is initiated while an on-going operation
+     * is in progress, or if cancel() was called.
+     */
+    CANCELED = 5,
+
+    /**
+     * The current remove operation could not be completed; the face template
+     * provided could not be removed.
+     */
+    UNABLE_TO_REMOVE = 6,
+
+    /**
+     * Face authentication is locked out due to too many unsuccessful attempts.
+     */
+    LOCKOUT = 7,
+
+    /**
+     * Used to enable a vendor-specific error message.
+     */
+    VENDOR = 8,
+};
+
+/**
+ * Face acquisition information provides feedback for the current enrollment
+ * or authentication operation.
+ *
+ * This information indicates that the user can take immediate action to resolve
+ * an issue, and clients must ensure that this information is surfaced to the
+ * user.
+ */
+enum FaceAcquiredInfo : int32_t {
+
+    /**
+     * The face acquired was good; no further user interaction is necessary.
+     */
+    GOOD = 0,
+
+    /**
+     * The face data acquired was too noisy or did not have sufficient detail.
+     * This is a catch-all for all acquisition errors not captured by the other
+     * constants.
+     */
+    INSUFFICIENT = 1,
+
+    /**
+     * Because there was too much ambient light, the captured face data was too
+     * bright. It's reasonable to return this after multiple
+     * FaceAcquiredInfo.INSUFFICIENT.
+     *
+     * The user is expected to take action to retry the operation in better
+     * lighting conditions when this is returned.
+     */
+    TOO_BRIGHT = 2,
+
+    /**
+     * Because there was not enough illumination, the captured face data was too
+     * dark. It's reasonable to return this after multiple
+     * FaceAcquiredInfo.INSUFFICIENT.
+     *
+     * The user is expected to take action to retry the operation in better
+     * lighting conditions when this is returned.
+     */
+    TOO_DARK = 3,
+
+    /**
+     * The detected face is too close to the sensor, and the image cannot be
+     * processed.
+     *
+     * The user is expected to be informed to move further from the sensor when
+     * this is returned.
+     */
+    TOO_CLOSE = 4,
+
+    /**
+     * The detected face is too small, as the user might be too far away from
+     * the sensor.
+     *
+     * The user is expected to be informed to move closer to the sensor when
+     * this is returned.
+     */
+    TOO_FAR = 5,
+
+    /**
+     * Only the upper part of the face was detected. The sensor's field of view
+     * is too high.
+     *
+     * The user should be informed to move up with respect to the sensor when
+     * this is returned.
+     */
+    FACE_TOO_HIGH = 6,
+
+    /**
+     * Only the lower part of the face was detected. The sensor's field of view
+     * is too low.
+     *
+     * The user should be informed to move down with respect to the sensor when
+     * this is returned.
+     */
+    FACE_TOO_LOW = 7,
+
+    /**
+     * Only the right part of the face was detected. The sensor's field of view
+     * is too far right.
+     *
+     * The user should be informed to move to the right with respect to the
+     * sensor when this is returned.
+     */
+    FACE_TOO_RIGHT = 8,
+
+    /**
+     * Only the left part of the face was detected. The sensor's field of view
+     * is too far left.
+     *
+     * The user should be informed to move to the left with respect to the
+     * sensor when this is returned.
+     */
+    FACE_TOO_LEFT = 9,
+
+    /**
+     * The user's face was directed away from the sensor. The user should be
+     * informed to face the sensor when this is returned.
+     */
+    POOR_GAZE = 10,
+
+    /**
+     * No face was detected within the sensor's field of view.
+     *
+     * The user should be informed to point the sensor to a face when this is
+     * returned.
+     */
+    NOT_DETECTED = 11,
+
+    /**
+     * Too much motion was detected.
+     *
+     * The user should be informed to keep their face steady relative to the
+     * sensor.
+     */
+    TOO_MUCH_MOTION = 12,
+
+    /**
+     * The sensor needs to be recalibrated.
+     */
+    RECALIBRATE = 13,
+
+    /**
+     * Used to enable a vendor-specific acquisition message.
+     */
+    VENDOR = 14
+};
+
+/**
+ * Result structure with an additional uint64_t field. See documentation in
+ * setCallback(), preEnroll(), and getAuthenticatorId() for usage of the value.
+ */
+struct OptionalUint64 {
+    /**
+     * The return status.
+     */
+    Status status;
+
+    /**
+     * This value is only meaningful if status is OK.
+     */
+    uint64_t value;
+};
+
+/**
+ * Result structure with an addition bool field. See documentation in
+ * getRequireAttention() for usage of the value.
+ */
+struct OptionalBool {
+    /**
+     * The return status.
+     */
+    Status status;
+
+    /**
+     * This value is only meaningful if status is OK.
+     */
+    bool value;
+};
\ No newline at end of file
diff --git a/camera/device/3.4/default/ExternalCameraDeviceSession.cpp b/camera/device/3.4/default/ExternalCameraDeviceSession.cpp
index 28ca0f3..350f48b 100644
--- a/camera/device/3.4/default/ExternalCameraDeviceSession.cpp
+++ b/camera/device/3.4/default/ExternalCameraDeviceSession.cpp
@@ -344,17 +344,31 @@
         ICameraDeviceSession::configureStreams_3_4_cb _hidl_cb)  {
     V3_2::StreamConfiguration config_v32;
     V3_3::HalStreamConfiguration outStreams_v33;
+    V3_4::HalStreamConfiguration outStreams;
     Mutex::Autolock _il(mInterfaceLock);
 
     config_v32.operationMode = requestedConfiguration.operationMode;
     config_v32.streams.resize(requestedConfiguration.streams.size());
+    uint32_t blobBufferSize = 0;
+    int numStallStream = 0;
     for (size_t i = 0; i < config_v32.streams.size(); i++) {
         config_v32.streams[i] = requestedConfiguration.streams[i].v3_2;
+        if (config_v32.streams[i].format == PixelFormat::BLOB) {
+            blobBufferSize = requestedConfiguration.streams[i].bufferSize;
+            numStallStream++;
+        }
     }
 
-    Status status = configureStreams(config_v32, &outStreams_v33);
+    // Fail early if there are multiple BLOB streams
+    if (numStallStream > kMaxStallStream) {
+        ALOGE("%s: too many stall streams (expect <= %d, got %d)", __FUNCTION__,
+                kMaxStallStream, numStallStream);
+        _hidl_cb(Status::ILLEGAL_ARGUMENT, outStreams);
+        return Void();
+    }
 
-    V3_4::HalStreamConfiguration outStreams;
+    Status status = configureStreams(config_v32, &outStreams_v33, blobBufferSize);
+
     outStreams.streams.resize(outStreams_v33.streams.size());
     for (size_t i = 0; i < outStreams.streams.size(); i++) {
         outStreams.streams[i].v3_3 = outStreams_v33.streams[i];
@@ -1592,8 +1606,9 @@
      * main image needs to hold APP1, headers, and at most a poorly
      * compressed image */
     const ssize_t maxThumbCodeSize = 64 * 1024;
-    const ssize_t maxJpegCodeSize = parent->getJpegBufferSize(jpegSize.width,
-                                                             jpegSize.height);
+    const ssize_t maxJpegCodeSize = mBlobBufferSize == 0 ?
+            parent->getJpegBufferSize(jpegSize.width, jpegSize.height) :
+            mBlobBufferSize;
 
     /* Check that getJpegBufferSize did not return an error */
     if (maxJpegCodeSize < 0) {
@@ -1855,7 +1870,8 @@
 
 Status ExternalCameraDeviceSession::OutputThread::allocateIntermediateBuffers(
         const Size& v4lSize, const Size& thumbSize,
-        const hidl_vec<Stream>& streams) {
+        const hidl_vec<Stream>& streams,
+        uint32_t blobBufferSize) {
     std::lock_guard<std::mutex> lk(mBufferLock);
     if (mScaledYu12Frames.size() != 0) {
         ALOGE("%s: intermediate buffer pool has %zu inflight buffers! (expect 0)",
@@ -1924,6 +1940,8 @@
             it = mIntermediateBuffers.erase(it);
         }
     }
+
+    mBlobBufferSize = blobBufferSize;
     return Status::OK;
 }
 
@@ -2420,7 +2438,9 @@
 }
 
 Status ExternalCameraDeviceSession::configureStreams(
-        const V3_2::StreamConfiguration& config, V3_3::HalStreamConfiguration* out) {
+        const V3_2::StreamConfiguration& config,
+        V3_3::HalStreamConfiguration* out,
+        uint32_t blobBufferSize) {
     ATRACE_CALL();
     if (config.operationMode != StreamConfigurationMode::NORMAL_MODE) {
         ALOGE("%s: unsupported operation mode: %d", __FUNCTION__, config.operationMode);
@@ -2582,7 +2602,7 @@
     }
 
     status = mOutputThread->allocateIntermediateBuffers(v4lSize,
-                mMaxThumbResolution, config.streams);
+                mMaxThumbResolution, config.streams, blobBufferSize);
     if (status != Status::OK) {
         ALOGE("%s: allocating intermediate buffers failed!", __FUNCTION__);
         return status;
diff --git a/camera/device/3.4/default/include/ext_device_v3_4_impl/ExternalCameraDeviceSession.h b/camera/device/3.4/default/include/ext_device_v3_4_impl/ExternalCameraDeviceSession.h
index 0b94c11..6e56596 100644
--- a/camera/device/3.4/default/include/ext_device_v3_4_impl/ExternalCameraDeviceSession.h
+++ b/camera/device/3.4/default/include/ext_device_v3_4_impl/ExternalCameraDeviceSession.h
@@ -177,7 +177,10 @@
     Status initStatus() const;
     status_t initDefaultRequests();
     status_t fillCaptureResult(common::V1_0::helper::CameraMetadata& md, nsecs_t timestamp);
-    Status configureStreams(const V3_2::StreamConfiguration&, V3_3::HalStreamConfiguration* out);
+    Status configureStreams(const V3_2::StreamConfiguration&,
+            V3_3::HalStreamConfiguration* out,
+            // Only filled by configureStreams_3_4, and only one blob stream supported
+            uint32_t blobBufferSize = 0);
     // fps = 0.0 means default, which is
     // slowest fps that is at least 30, or fastest fps if 30 is not supported
     int configureV4l2StreamLocked(const SupportedV4L2Format& fmt, double fps = 0.0);
@@ -225,7 +228,8 @@
 
         Status allocateIntermediateBuffers(
                 const Size& v4lSize, const Size& thumbSize,
-                const hidl_vec<Stream>& streams);
+                const hidl_vec<Stream>& streams,
+                uint32_t blobBufferSize);
         Status submitRequest(const std::shared_ptr<HalRequest>&);
         void flush();
         void dump(int fd);
@@ -289,6 +293,7 @@
         std::unordered_map<Size, sp<AllocatedFrame>, SizeHasher> mScaledYu12Frames;
         YCbCrLayout mYu12FrameLayout;
         YCbCrLayout mYu12ThumbFrameLayout;
+        uint32_t mBlobBufferSize = 0; // 0 -> HAL derive buffer size, else: use given size
 
         std::string mExifMake;
         std::string mExifModel;
diff --git a/camera/metadata/3.3/types.hal b/camera/metadata/3.3/types.hal
index 04edfe9..a37e132 100644
--- a/camera/metadata/3.3/types.hal
+++ b/camera/metadata/3.3/types.hal
@@ -109,8 +109,8 @@
 
     /** android.statistics.oisDataMode [dynamic, enum, public]
      *
-     * <p>A control for selecting whether OIS position information is included in output
-     * result metadata.</p>
+     * <p>A control for selecting whether optical stabilization (OIS) position
+     * information is included in output result metadata.</p>
      */
     ANDROID_STATISTICS_OIS_DATA_MODE = android.hardware.camera.metadata@3.2::CameraMetadataTag:ANDROID_STATISTICS_END,
 
diff --git a/camera/metadata/3.4/Android.bp b/camera/metadata/3.4/Android.bp
new file mode 100644
index 0000000..04a00ef
--- /dev/null
+++ b/camera/metadata/3.4/Android.bp
@@ -0,0 +1,21 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.camera.metadata@3.4",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "types.hal",
+    ],
+    interfaces: [
+        "android.hardware.camera.metadata@3.2",
+        "android.hardware.camera.metadata@3.3",
+    ],
+    types: [
+        "CameraMetadataTag",
+    ],
+    gen_java: true,
+}
+
diff --git a/camera/metadata/3.4/types.hal b/camera/metadata/3.4/types.hal
new file mode 100644
index 0000000..0088087
--- /dev/null
+++ b/camera/metadata/3.4/types.hal
@@ -0,0 +1,51 @@
+/*
+ * 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.
+ */
+
+/*
+ * Autogenerated from camera metadata definitions in
+ * /system/media/camera/docs/metadata_definitions.xml
+ * *** DO NOT EDIT BY HAND ***
+ */
+
+package android.hardware.camera.metadata@3.4;
+
+/* Include definitions from all prior minor HAL metadata revisions */
+import android.hardware.camera.metadata@3.2;
+import android.hardware.camera.metadata@3.3;
+
+// No new metadata sections added in this revision
+
+/**
+ * Main enumeration for defining camera metadata tags added in this revision
+ *
+ * <p>Partial documentation is included for each tag; for complete documentation, reference
+ * '/system/media/camera/docs/docs.html' in the corresponding Android source tree.</p>
+ */
+enum CameraMetadataTag : @3.3::CameraMetadataTag {
+    /** android.request.characteristicKeysNeedingPermission [static, int32[], hidden]
+     *
+     * <p>A list of camera characteristics keys that are only available
+     * in case the camera client has camera permission.</p>
+     */
+    ANDROID_REQUEST_CHARACTERISTIC_KEYS_NEEDING_PERMISSION = android.hardware.camera.metadata@3.3::CameraMetadataTag:ANDROID_REQUEST_END_3_3,
+
+    ANDROID_REQUEST_END_3_4,
+
+};
+
+/*
+ * Enumeration definitions for the various entries that need them
+ */
diff --git a/compatibility_matrices/Android.mk b/compatibility_matrices/Android.mk
index ab262a0..22d0412 100644
--- a/compatibility_matrices/Android.mk
+++ b/compatibility_matrices/Android.mk
@@ -70,6 +70,18 @@
 
 include $(BUILD_FRAMEWORK_COMPATIBILITY_MATRIX)
 
+include $(CLEAR_VARS)
+include $(LOCAL_PATH)/clear_vars.mk
+LOCAL_MODULE := framework_compatibility_matrix.current.xml
+LOCAL_MODULE_STEM := compatibility_matrix.current.xml
+LOCAL_SRC_FILES := $(LOCAL_MODULE_STEM)
+LOCAL_KERNEL_CONFIG_DATA_PATHS := \
+    4.4.0:$(my_kernel_config_data)/android-4.4 \
+    4.9.0:$(my_kernel_config_data)/android-4.9 \
+    4.14.0:$(my_kernel_config_data)/android-4.14 \
+
+include $(BUILD_FRAMEWORK_COMPATIBILITY_MATRIX)
+
 my_kernel_config_data :=
 
 # Framework Compatibility Matrix (common to all FCM versions)
@@ -120,6 +132,7 @@
     framework_compatibility_matrix.1.xml \
     framework_compatibility_matrix.2.xml \
     framework_compatibility_matrix.3.xml \
+    framework_compatibility_matrix.current.xml \
     framework_compatibility_matrix.device.xml
 
 # Phony target that installs all framework compatibility matrix files
diff --git a/compatibility_matrices/compatibility_matrix.3.xml b/compatibility_matrices/compatibility_matrix.3.xml
index e13d293..fc7bad6 100644
--- a/compatibility_matrices/compatibility_matrix.3.xml
+++ b/compatibility_matrices/compatibility_matrix.3.xml
@@ -445,7 +445,7 @@
     </hal>
     <hal format="hidl" optional="true">
         <name>android.hardware.wifi.hostapd</name>
-        <version>1.0</version>
+        <version>1.0-1</version>
         <interface>
             <name>IHostapd</name>
             <instance>default</instance>
diff --git a/compatibility_matrices/compatibility_matrix.current.xml b/compatibility_matrices/compatibility_matrix.current.xml
new file mode 100644
index 0000000..73afb1b
--- /dev/null
+++ b/compatibility_matrices/compatibility_matrix.current.xml
@@ -0,0 +1,478 @@
+<compatibility-matrix version="1.0" type="framework" level="4">
+    <hal format="hidl" optional="false">
+        <name>android.hardware.audio</name>
+        <version>4.0</version>
+        <interface>
+            <name>IDevicesFactory</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="false">
+        <name>android.hardware.audio.effect</name>
+        <version>4.0</version>
+        <interface>
+            <name>IEffectsFactory</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.authsecret</name>
+        <version>1.0</version>
+        <interface>
+            <name>IAuthSecret</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.automotive.audiocontrol</name>
+        <version>1.0</version>
+        <interface>
+            <name>IAudioControl</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.automotive.evs</name>
+        <version>1.0</version>
+        <interface>
+            <name>IEvsEnumerator</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.automotive.vehicle</name>
+        <version>2.0</version>
+        <interface>
+            <name>IVehicle</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.biometrics.face</name>
+        <version>1.0</version>
+        <interface>
+            <name>IBiometricsFace</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.biometrics.fingerprint</name>
+        <version>2.1</version>
+        <interface>
+            <name>IBiometricsFingerprint</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.bluetooth</name>
+        <version>1.0</version>
+        <interface>
+            <name>IBluetoothHci</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.bluetooth.a2dp</name>
+        <version>1.0</version>
+        <interface>
+            <name>IBluetoothAudioOffload</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.boot</name>
+        <version>1.0</version>
+        <interface>
+            <name>IBootControl</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.broadcastradio</name>
+        <version>1.0-1</version>
+        <interface>
+            <name>IBroadcastRadioFactory</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.camera.provider</name>
+        <version>2.4</version>
+        <interface>
+            <name>ICameraProvider</name>
+            <regex-instance>[^/]+/[0-9]+</regex-instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.cas</name>
+        <version>1.0</version>
+        <interface>
+            <name>IMediaCasService</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="false">
+        <name>android.hardware.configstore</name>
+        <version>1.2</version>
+        <interface>
+            <name>ISurfaceFlingerConfigs</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.confirmationui</name>
+        <version>1.0</version>
+        <interface>
+            <name>IConfirmationUI</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.contexthub</name>
+        <version>1.0</version>
+        <interface>
+            <name>IContexthub</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.drm</name>
+        <version>1.0</version>
+        <interface>
+            <name>ICryptoFactory</name>
+            <regex-instance>.*</regex-instance>
+        </interface>
+        <interface>
+            <name>IDrmFactory</name>
+            <regex-instance>.*</regex-instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="false">
+        <name>android.hardware.drm</name>
+        <version>1.1</version>
+        <interface>
+            <name>ICryptoFactory</name>
+            <regex-instance>.*</regex-instance>
+        </interface>
+        <interface>
+            <name>IDrmFactory</name>
+            <regex-instance>.*</regex-instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.dumpstate</name>
+        <version>1.0</version>
+        <interface>
+            <name>IDumpstateDevice</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="false">
+        <name>android.hardware.gatekeeper</name>
+        <version>1.0</version>
+        <interface>
+            <name>IGatekeeper</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.gnss</name>
+        <version>1.0-1</version>
+        <interface>
+            <name>IGnss</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="false">
+        <name>android.hardware.graphics.allocator</name>
+        <version>2.0</version>
+        <interface>
+            <name>IAllocator</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="false">
+        <name>android.hardware.graphics.composer</name>
+        <version>2.1</version>
+        <interface>
+            <name>IComposer</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="false">
+        <name>android.hardware.graphics.mapper</name>
+        <version>2.0</version>
+        <interface>
+            <name>IMapper</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="false">
+        <name>android.hardware.health</name>
+        <version>2.0</version>
+        <interface>
+            <name>IHealth</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.health.filesystem</name>
+        <version>1.0</version>
+        <interface>
+            <name>IFileSystem</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.ir</name>
+        <version>1.0</version>
+        <interface>
+            <name>IConsumerIr</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="false">
+        <name>android.hardware.keymaster</name>
+        <version>3.0</version>
+        <version>4.0</version>
+        <interface>
+            <name>IKeymasterDevice</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.keymaster</name>
+        <version>4.0</version>
+        <interface>
+            <name>IKeymasterDevice</name>
+            <instance>strongbox</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.light</name>
+        <version>2.0</version>
+        <interface>
+            <name>ILight</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="false">
+        <name>android.hardware.media.omx</name>
+        <version>1.0</version>
+        <interface>
+            <name>IOmx</name>
+            <instance>default</instance>
+        </interface>
+        <interface>
+            <name>IOmxStore</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.memtrack</name>
+        <version>1.0</version>
+        <interface>
+            <name>IMemtrack</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.neuralnetworks</name>
+        <version>1.0</version>
+        <interface>
+            <name>IDevice</name>
+            <regex-instance>.*</regex-instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.nfc</name>
+        <version>1.1</version>
+        <interface>
+            <name>INfc</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.oemlock</name>
+        <version>1.0</version>
+        <interface>
+            <name>IOemLock</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.power</name>
+        <version>1.0-3</version>
+        <interface>
+            <name>IPower</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.radio</name>
+        <version>1.0-2</version>
+        <interface>
+            <name>IRadio</name>
+            <instance>slot1</instance>
+            <instance>slot2</instance>
+            <instance>slot3</instance>
+        </interface>
+        <interface>
+            <name>ISap</name>
+            <instance>slot1</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.radio.config</name>
+        <version>1.0</version>
+        <interface>
+            <name>IRadioConfig</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.renderscript</name>
+        <version>1.0</version>
+        <interface>
+            <name>IDevice</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.secure_element</name>
+        <version>1.0</version>
+        <interface>
+            <name>ISecureElement</name>
+            <regex-instance>eSE[1-9][0-9]*</regex-instance>
+            <regex-instance>SIM[1-9][0-9]*</regex-instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.sensors</name>
+        <version>1.0</version>
+        <interface>
+            <name>ISensors</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.soundtrigger</name>
+        <version>2.0-1</version>
+        <interface>
+            <name>ISoundTriggerHw</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.tetheroffload.config</name>
+        <version>1.0</version>
+        <interface>
+            <name>IOffloadConfig</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.tetheroffload.control</name>
+        <version>1.0</version>
+        <interface>
+            <name>IOffloadControl</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.thermal</name>
+        <version>1.0-1</version>
+        <interface>
+            <name>IThermal</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.tv.cec</name>
+        <version>1.0</version>
+        <interface>
+            <name>IHdmiCec</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.tv.input</name>
+        <version>1.0</version>
+        <interface>
+            <name>ITvInput</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.usb</name>
+        <version>1.0-1</version>
+        <interface>
+            <name>IUsb</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.usb.gadget</name>
+        <version>1.0</version>
+        <interface>
+            <name>IUsbGadget</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.vibrator</name>
+        <version>1.0-2</version>
+        <interface>
+            <name>IVibrator</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.vr</name>
+        <version>1.0</version>
+        <interface>
+            <name>IVr</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.weaver</name>
+        <version>1.0</version>
+        <interface>
+            <name>IWeaver</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.wifi</name>
+        <version>1.0-3</version>
+        <interface>
+            <name>IWifi</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.wifi.hostapd</name>
+        <version>1.0</version>
+        <interface>
+            <name>IHostapd</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.wifi.offload</name>
+        <version>1.0</version>
+        <interface>
+            <name>IOffload</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+    <hal format="hidl" optional="true">
+        <name>android.hardware.wifi.supplicant</name>
+        <version>1.0-1</version>
+        <interface>
+            <name>ISupplicant</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+</compatibility-matrix>
diff --git a/configstore/1.0/ISurfaceFlingerConfigs.hal b/configstore/1.0/ISurfaceFlingerConfigs.hal
index 1de7570..0790905 100644
--- a/configstore/1.0/ISurfaceFlingerConfigs.hal
+++ b/configstore/1.0/ISurfaceFlingerConfigs.hal
@@ -61,7 +61,7 @@
     hasWideColorDisplay() generates (OptionalBool value);
 
     /**
-     * hwHDRDisplay indicates that the device has an High Dynamic Range display.
+     * hwHdrDisplay indicates that the device has an High Dynamic Range display.
      * A display is considered High Dynamic Range if it
      *
      *     1. is a wide color gamut display, typically DCI-P3 or lager
diff --git a/configstore/1.1/default/SurfaceFlingerConfigs.h b/configstore/1.1/default/SurfaceFlingerConfigs.h
deleted file mode 100644
index 3714e81..0000000
--- a/configstore/1.1/default/SurfaceFlingerConfigs.h
+++ /dev/null
@@ -1,48 +0,0 @@
-#ifndef ANDROID_HARDWARE_CONFIGSTORE_V1_1_SURFACEFLINGERCONFIGS_H
-#define ANDROID_HARDWARE_CONFIGSTORE_V1_1_SURFACEFLINGERCONFIGS_H
-
-#include <android/hardware/configstore/1.1/ISurfaceFlingerConfigs.h>
-#include <hidl/MQDescriptor.h>
-#include <hidl/Status.h>
-
-namespace android {
-namespace hardware {
-namespace configstore {
-namespace V1_1 {
-namespace implementation {
-
-using ::android::hardware::configstore::V1_1::ISurfaceFlingerConfigs;
-using ::android::hardware::Return;
-using ::android::hardware::Void;
-using ::android::sp;
-
-struct SurfaceFlingerConfigs : public ISurfaceFlingerConfigs {
-    // Methods from
-    // ::android::hardware::configstore::V1_0::ISurfaceFlingerConfigs follow.
-    Return<void> vsyncEventPhaseOffsetNs(vsyncEventPhaseOffsetNs_cb _hidl_cb) override;
-    Return<void> vsyncSfEventPhaseOffsetNs(vsyncSfEventPhaseOffsetNs_cb _hidl_cb) override;
-    Return<void> useContextPriority(useContextPriority_cb _hidl_cb) override;
-    Return<void> hasWideColorDisplay(hasWideColorDisplay_cb _hidl_cb) override;
-    Return<void> hasHDRDisplay(hasHDRDisplay_cb _hidl_cb) override;
-    Return<void> presentTimeOffsetFromVSyncNs(presentTimeOffsetFromVSyncNs_cb _hidl_cb) override;
-    Return<void> useHwcForRGBtoYUV(useHwcForRGBtoYUV_cb _hidl_cb) override;
-    Return<void> maxVirtualDisplaySize(maxVirtualDisplaySize_cb _hidl_cb) override;
-    Return<void> hasSyncFramework(hasSyncFramework_cb _hidl_cb) override;
-    Return<void> useVrFlinger(useVrFlinger_cb _hidl_cb) override;
-    Return<void> maxFrameBufferAcquiredBuffers(maxFrameBufferAcquiredBuffers_cb _hidl_cb) override;
-    Return<void> startGraphicsAllocatorService(startGraphicsAllocatorService_cb _hidl_cb) override;
-
-    // Methods from
-    // ::android::hardware::configstore::V1_1::ISurfaceFlingerConfigs follow.
-    Return<void> primaryDisplayOrientation(primaryDisplayOrientation_cb _hidl_cb) override;
-
-    // Methods from ::android::hidl::base::V1_0::IBase follow.
-};
-
-}  // namespace implementation
-}  // namespace V1_1
-}  // namespace configstore
-}  // namespace hardware
-}  // namespace android
-
-#endif  // ANDROID_HARDWARE_CONFIGSTORE_V1_1_SURFACEFLINGERCONFIGS_H
diff --git a/configstore/1.2/Android.bp b/configstore/1.2/Android.bp
new file mode 100644
index 0000000..cc5644c
--- /dev/null
+++ b/configstore/1.2/Android.bp
@@ -0,0 +1,19 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.configstore@1.2",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "ISurfaceFlingerConfigs.hal",
+    ],
+    interfaces: [
+        "android.hardware.configstore@1.1",
+        "android.hardware.configstore@1.0",
+        "android.hardware.graphics.common@1.1",
+        "android.hidl.base@1.0",
+    ],
+    gen_java: true,
+}
\ No newline at end of file
diff --git a/configstore/1.2/ISurfaceFlingerConfigs.hal b/configstore/1.2/ISurfaceFlingerConfigs.hal
new file mode 100644
index 0000000..c879155
--- /dev/null
+++ b/configstore/1.2/ISurfaceFlingerConfigs.hal
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.1 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.1
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT 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.configstore@1.2;
+
+import android.hardware.graphics.common@1.1::Dataspace;
+import android.hardware.graphics.common@1.1::PixelFormat;
+import @1.1::ISurfaceFlingerConfigs;
+import @1.0::OptionalBool;
+
+/**
+ * New revision of ISurfaceFlingerConfigs
+ */
+interface ISurfaceFlingerConfigs extends @1.1::ISurfaceFlingerConfigs {
+    /**
+     * useColorManagement indicates whether SurfaceFlinger should manage color
+     * by switching to appropriate color mode automatically depending on the
+     * Dataspace of the surfaces on screen.
+     * This function must return true when hasWideColorDisplay or hasHDRDisplay
+     * return true.
+     */
+    useColorManagement() generates (OptionalBool value);
+
+    /**
+     * Returns the default data space and default pixel format that
+     * SurfaceFlinger expects to receive and output.
+     * To determine the default data space and default pixel format,
+     * there are a few things we recommend to consider:
+     *
+     *   1. Hardware composer's capability to composite contents with the
+     *      data space and pixel format efficiently;
+     *   2. Hardware composer's ability to composite contents when sRGB contents
+     *      and the chosen data space contents coexist;
+     *   3. For better blending, consider using pixel format where the alpha
+     *      channel has as many bits as the RGB color channel.
+     *
+     * @return dataSpace is the default data space that SurfaceFlinger expects.
+     *         The data space must not be Dataspace::UNKNOWN, if unspecified,
+     *         the default data space is Dataspace::V0_SRGB;
+     * @return pixelFormat is the default pixel format that SurfaceFlinger
+     *         expects. If unspecified, the default pixel format is
+     *         PixelFormat::RGBA_8888.
+     */
+    getCompositionPreference()
+        generates (Dataspace dataSpace, PixelFormat pixelFormat);
+};
diff --git a/configstore/1.1/default/Android.mk b/configstore/1.2/default/Android.mk
similarity index 67%
rename from configstore/1.1/default/Android.mk
rename to configstore/1.2/default/Android.mk
index 40f621b..b807357 100644
--- a/configstore/1.1/default/Android.mk
+++ b/configstore/1.2/default/Android.mk
@@ -2,15 +2,15 @@
 
 ################################################################################
 include $(CLEAR_VARS)
-LOCAL_MODULE := android.hardware.configstore@1.1-service
+LOCAL_MODULE := android.hardware.configstore@1.2-service
 # seccomp is not required for coverage build.
 ifneq ($(NATIVE_COVERAGE),true)
-LOCAL_REQUIRED_MODULES_arm64 := configstore@1.1.policy
+LOCAL_REQUIRED_MODULES_arm64 := configstore.policy
 endif
-LOCAL_PROPRIETARY_MODULE := true
+LOCAL_VENDOR_MODULE := true
 LOCAL_MODULE_CLASS := EXECUTABLES
 LOCAL_MODULE_RELATIVE_PATH := hw
-LOCAL_INIT_RC := android.hardware.configstore@1.1-service.rc
+LOCAL_INIT_RC := android.hardware.configstore@1.2-service.rc
 LOCAL_SRC_FILES:= service.cpp
 
 include $(LOCAL_PATH)/surfaceflinger.mk
@@ -23,16 +23,17 @@
     liblog \
     libutils \
     android.hardware.configstore@1.0 \
-    android.hardware.configstore@1.1
+    android.hardware.configstore@1.1 \
+    android.hardware.configstore@1.2
 
 include $(BUILD_EXECUTABLE)
 
 # seccomp filter for configstore
 ifeq ($(TARGET_ARCH), $(filter $(TARGET_ARCH), arm64))
 include $(CLEAR_VARS)
-LOCAL_MODULE := configstore@1.1.policy
+LOCAL_MODULE := configstore.policy
 LOCAL_MODULE_CLASS := ETC
 LOCAL_MODULE_PATH := $(TARGET_OUT_VENDOR)/etc/seccomp_policy
-LOCAL_SRC_FILES := seccomp_policy/configstore@1.1-$(TARGET_ARCH).policy
+LOCAL_SRC_FILES := seccomp_policy/configstore-$(TARGET_ARCH).policy
 include $(BUILD_PREBUILT)
 endif
diff --git a/configstore/1.1/default/SurfaceFlingerConfigs.cpp b/configstore/1.2/default/SurfaceFlingerConfigs.cpp
similarity index 79%
rename from configstore/1.1/default/SurfaceFlingerConfigs.cpp
rename to configstore/1.2/default/SurfaceFlingerConfigs.cpp
index da3081c..ae19dc0 100644
--- a/configstore/1.1/default/SurfaceFlingerConfigs.cpp
+++ b/configstore/1.2/default/SurfaceFlingerConfigs.cpp
@@ -17,16 +17,19 @@
 #include "SurfaceFlingerConfigs.h"
 
 #include <android/hardware/configstore/1.1/types.h>
+#include <android/hardware/graphics/common/1.1/types.h>
 #include <log/log.h>
 
 namespace android {
 namespace hardware {
 namespace configstore {
-namespace V1_1 {
+namespace V1_2 {
 namespace implementation {
 
-// Methods from ::android::hardware::configstore::V1_0::ISurfaceFlingerConfigs
-// follow.
+using ::android::hardware::graphics::common::V1_1::Dataspace;
+using ::android::hardware::graphics::common::V1_1::PixelFormat;
+
+// ::android::hardware::configstore::V1_0::ISurfaceFlingerConfigs implementation.
 Return<void> SurfaceFlingerConfigs::vsyncEventPhaseOffsetNs(vsyncEventPhaseOffsetNs_cb _hidl_cb) {
 #ifdef VSYNC_EVENT_PHASE_OFFSET_NS
     _hidl_cb({true, VSYNC_EVENT_PHASE_OFFSET_NS});
@@ -142,8 +145,7 @@
     return Void();
 }
 
-// Methods from ::android::hardware::configstore::V1_1::ISurfaceFlingerConfigs
-// follow.
+// ::android::hardware::configstore::V1_1::ISurfaceFlingerConfigs implementation.
 
 #ifdef PRIMARY_DISPLAY_ORIENTATION
 static_assert(PRIMARY_DISPLAY_ORIENTATION == 0 || PRIMARY_DISPLAY_ORIENTATION == 90 ||
@@ -191,10 +193,37 @@
     return Void();
 }
 
-// Methods from ::android::hidl::base::V1_0::IBase follow.
+// ::android::hardware::configstore::V1_2::ISurfaceFlingerConfigs implementation.
+Return<void> SurfaceFlingerConfigs::useColorManagement(useColorManagement_cb _hidl_cb) {
+#if defined(USE_COLOR_MANAGEMENT) || defined(HAS_WIDE_COLOR_DISPLAY) || defined(HAS_HDR_DISPLAY)
+    _hidl_cb({true, true});
+#else
+    _hidl_cb({true, false});
+#endif
+    return Void();
+}
+
+#ifdef COMPOSITION_DATA_SPACE
+static_assert(COMPOSITION_DATA_SPACE != 0, "Expected composition data space must not be UNKNOWN");
+#endif
+
+Return<void> SurfaceFlingerConfigs::getCompositionPreference(getCompositionPreference_cb _hidl_cb) {
+    Dataspace dataSpace = Dataspace::V0_SRGB;
+    PixelFormat pixelFormat = PixelFormat::RGBA_8888;
+
+#ifdef COMPOSITION_DATA_SPACE
+    dataSpace = static_cast<Dataspace>(COMPOSITION_DATA_SPACE);
+#endif
+
+#ifdef COMPOSITION_PIXEL_FORMAT
+    pixelFormat = static_cast<PixelFormat>(COMPOSITION_PIXEL_FORMAT);
+#endif
+    _hidl_cb(dataSpace, pixelFormat);
+    return Void();
+}
 
 }  // namespace implementation
-}  // namespace V1_1
+}  // namespace V1_2
 }  // namespace configstore
 }  // namespace hardware
 }  // namespace android
diff --git a/configstore/1.2/default/SurfaceFlingerConfigs.h b/configstore/1.2/default/SurfaceFlingerConfigs.h
new file mode 100644
index 0000000..7dd8f6d
--- /dev/null
+++ b/configstore/1.2/default/SurfaceFlingerConfigs.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.1 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.1
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT 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_CONFIGSTORE_V1_2_SURFACEFLINGERCONFIGS_H
+#define ANDROID_HARDWARE_CONFIGSTORE_V1_2_SURFACEFLINGERCONFIGS_H
+
+#include <android/hardware/configstore/1.2/ISurfaceFlingerConfigs.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+
+namespace android {
+namespace hardware {
+namespace configstore {
+namespace V1_2 {
+namespace implementation {
+
+using ::android::sp;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::configstore::V1_2::ISurfaceFlingerConfigs;
+
+struct SurfaceFlingerConfigs : public ISurfaceFlingerConfigs {
+    // ::android::hardware::configstore::V1_0::ISurfaceFlingerConfigs implementation.
+    Return<void> vsyncEventPhaseOffsetNs(vsyncEventPhaseOffsetNs_cb _hidl_cb) override;
+    Return<void> vsyncSfEventPhaseOffsetNs(vsyncSfEventPhaseOffsetNs_cb _hidl_cb) override;
+    Return<void> useContextPriority(useContextPriority_cb _hidl_cb) override;
+    Return<void> hasWideColorDisplay(hasWideColorDisplay_cb _hidl_cb) override;
+    Return<void> hasHDRDisplay(hasHDRDisplay_cb _hidl_cb) override;
+    Return<void> presentTimeOffsetFromVSyncNs(presentTimeOffsetFromVSyncNs_cb _hidl_cb) override;
+    Return<void> useHwcForRGBtoYUV(useHwcForRGBtoYUV_cb _hidl_cb) override;
+    Return<void> maxVirtualDisplaySize(maxVirtualDisplaySize_cb _hidl_cb) override;
+    Return<void> hasSyncFramework(hasSyncFramework_cb _hidl_cb) override;
+    Return<void> useVrFlinger(useVrFlinger_cb _hidl_cb) override;
+    Return<void> maxFrameBufferAcquiredBuffers(maxFrameBufferAcquiredBuffers_cb _hidl_cb) override;
+    Return<void> startGraphicsAllocatorService(startGraphicsAllocatorService_cb _hidl_cb) override;
+
+    // ::android::hardware::configstore::V1_1::ISurfaceFlingerConfigs follow implementation.
+    Return<void> primaryDisplayOrientation(primaryDisplayOrientation_cb _hidl_cb) override;
+
+    // ::android::hardware::configstore::V1_2::ISurfaceFlingerConfigs follow implementation.
+    Return<void> useColorManagement(useColorManagement_cb _hidl_cb) override;
+    Return<void> getCompositionPreference(getCompositionPreference_cb _hidl_cb) override;
+};
+
+}  // namespace implementation
+}  // namespace V1_2
+}  // namespace configstore
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_CONFIGSTORE_V1_2_SURFACEFLINGERCONFIGS_H
diff --git a/configstore/1.1/default/android.hardware.configstore@1.1-service.rc b/configstore/1.2/default/android.hardware.configstore@1.2-service.rc
similarity index 83%
rename from configstore/1.1/default/android.hardware.configstore@1.1-service.rc
rename to configstore/1.2/default/android.hardware.configstore@1.2-service.rc
index 105678a..d6c5d10 100644
--- a/configstore/1.1/default/android.hardware.configstore@1.1-service.rc
+++ b/configstore/1.2/default/android.hardware.configstore@1.2-service.rc
@@ -1,4 +1,4 @@
-service vendor.configstore-hal /vendor/bin/hw/android.hardware.configstore@1.1-service
+service vendor.configstore-hal /vendor/bin/hw/android.hardware.configstore@1.2-service
     class hal animation
     user system
     group system
diff --git a/configstore/1.1/default/seccomp_policy/configstore@1.1-arm64.policy b/configstore/1.2/default/seccomp_policy/configstore-arm64.policy
similarity index 100%
rename from configstore/1.1/default/seccomp_policy/configstore@1.1-arm64.policy
rename to configstore/1.2/default/seccomp_policy/configstore-arm64.policy
diff --git a/configstore/1.1/default/service.cpp b/configstore/1.2/default/service.cpp
similarity index 80%
rename from configstore/1.1/default/service.cpp
rename to configstore/1.2/default/service.cpp
index 3b4e774..65a42f5 100644
--- a/configstore/1.1/default/service.cpp
+++ b/configstore/1.2/default/service.cpp
@@ -14,27 +14,27 @@
  * limitations under the License.
  */
 
-#define LOG_TAG "android.hardware.configstore@1.1-service"
+#define LOG_TAG "android.hardware.configstore@1.2-service"
 
-#include <android/hardware/configstore/1.1/ISurfaceFlingerConfigs.h>
+#include <android/hardware/configstore/1.2/ISurfaceFlingerConfigs.h>
 #include <hidl/HidlTransportSupport.h>
 #include <hwminijail/HardwareMinijail.h>
 
 #include "SurfaceFlingerConfigs.h"
 
-using android::hardware::configureRpcThreadpool;
-using android::hardware::joinRpcThreadpool;
-using android::hardware::configstore::V1_1::ISurfaceFlingerConfigs;
-using android::hardware::configstore::V1_1::implementation::SurfaceFlingerConfigs;
-using android::hardware::SetupMinijail;
+using android::OK;
 using android::sp;
 using android::status_t;
-using android::OK;
+using android::hardware::configureRpcThreadpool;
+using android::hardware::joinRpcThreadpool;
+using android::hardware::SetupMinijail;
+using android::hardware::configstore::V1_2::ISurfaceFlingerConfigs;
+using android::hardware::configstore::V1_2::implementation::SurfaceFlingerConfigs;
 
 int main() {
     configureRpcThreadpool(10, true);
 
-    SetupMinijail("/vendor/etc/seccomp_policy/configstore@1.1.policy");
+    SetupMinijail("/vendor/etc/seccomp_policy/configstore.policy");
 
     sp<ISurfaceFlingerConfigs> surfaceFlingerConfigs = new SurfaceFlingerConfigs;
     status_t status = surfaceFlingerConfigs->registerAsService();
diff --git a/configstore/1.1/default/surfaceflinger.mk b/configstore/1.2/default/surfaceflinger.mk
similarity index 82%
rename from configstore/1.1/default/surfaceflinger.mk
rename to configstore/1.2/default/surfaceflinger.mk
index 35922eb..f323999 100644
--- a/configstore/1.1/default/surfaceflinger.mk
+++ b/configstore/1.2/default/surfaceflinger.mk
@@ -54,3 +54,15 @@
 ifneq ($(SF_PRIMARY_DISPLAY_ORIENTATION),)
     LOCAL_CFLAGS += -DPRIMARY_DISPLAY_ORIENTATION=$(SF_PRIMARY_DISPLAY_ORIENTATION)
 endif
+
+ifeq ($(TARGET_USE_COLOR_MANAGEMENT),true)
+    LOCAL_CFLAGS += -DUSE_COLOR_MANAGEMENT
+endif
+
+ifneq ($(SF_COMPOSITION_DATA_SPACE),)
+    LOCAL_CFLAGS += -DCOMPOSITION_DATA_SPACE=$(SF_COMPOSITION_DATA_SPACE)
+endif
+
+ifneq ($(SF_COMPOSITION_PIXEL_FORMAT),)
+    LOCAL_CFLAGS += -DCOMPOSITION_PIXEL_FORMAT=$(SF_COMPOSITION_PIXEL_FORMAT)
+endif
diff --git a/configstore/utils/Android.bp b/configstore/utils/Android.bp
index 178f245..e0d4aa8 100644
--- a/configstore/utils/Android.bp
+++ b/configstore/utils/Android.bp
@@ -30,12 +30,14 @@
     shared_libs: [
         "android.hardware.configstore@1.0",
         "android.hardware.configstore@1.1",
+        "android.hardware.configstore@1.2",
         "libbase",
         "libhidlbase"
     ],
     export_shared_lib_headers: [
         "android.hardware.configstore@1.0",
         "android.hardware.configstore@1.1",
+        "android.hardware.configstore@1.2",
         "libbase",
         "libhidlbase"
     ],
diff --git a/contexthub/1.0/default/OWNERS b/contexthub/1.0/default/OWNERS
index 49a3204..5373073 100644
--- a/contexthub/1.0/default/OWNERS
+++ b/contexthub/1.0/default/OWNERS
@@ -1,2 +1,4 @@
-ashutoshj@google.com
+aarossig@google.com
+arthuri@google.com
 bduddie@google.com
+bstack@google.com
diff --git a/contexthub/1.0/vts/functional/OWNERS b/contexthub/1.0/vts/functional/OWNERS
index ad036b4..ee01441 100644
--- a/contexthub/1.0/vts/functional/OWNERS
+++ b/contexthub/1.0/vts/functional/OWNERS
@@ -1,6 +1,8 @@
 #Context Hub team
-ashutoshj@google.com
+aarossig@google.com
+arthuri@google.com
 bduddie@google.com
+bstack@google.com
 
 #VTS team
 yim@google.com
diff --git a/current.txt b/current.txt
index 909732f..4e5ec41 100644
--- a/current.txt
+++ b/current.txt
@@ -385,7 +385,8 @@
 10ff2fae516346b86121368ce5790d5accdfcb73983246b813f3d488b66db45a android.hardware.wifi.supplicant@1.1::ISupplicantStaNetwork
 
 # ABI preserving changes to HALs during Android Q
-da33234403ff5d60f3473711917b9948e6484a4260b5247acdafb111193a9de2 android.hardware.configstore@1.0::ISurfaceFlingerConfigs
+a95745bbf76aea16a76518bd7efe70cabc5886d09eaeffc993c2e1787a22ed23 android.hardware.camera.metadata@3.3::types
+5f936a5befde7af8d2a683670f80a836b4741e94d84b7b39026da3ed78be9906 android.hardware.configstore@1.0::ISurfaceFlingerConfigs
 574e8f1499436fb4075894dcae0b36682427956ecb114f17f1fe22d116a83c6b android.hardware.neuralnetworks@1.0::IPreparedModel
 1a5ae9793223658174258b523763c557abad6fb917df0b8e3cc097fc89035811 android.hardware.neuralnetworks@1.0::types
 4310eb8272f085914952f3bfb73a8f8bb477a80e8b93596f0ea5acb58546b66d android.hardware.neuralnetworks@1.1::types
diff --git a/drm/1.0/default/CryptoPlugin.cpp b/drm/1.0/default/CryptoPlugin.cpp
index f9c868d..666653b 100644
--- a/drm/1.0/default/CryptoPlugin.cpp
+++ b/drm/1.0/default/CryptoPlugin.cpp
@@ -52,7 +52,6 @@
     Return<void> CryptoPlugin::setSharedBufferBase(const hidl_memory& base,
             uint32_t bufferId) {
         sp<IMemory> hidlMemory = mapMemory(base);
-        ALOGE_IF(hidlMemory == nullptr, "mapMemory returns nullptr");
 
         // allow mapMemory to return nullptr
         mSharedBufferMap[bufferId] = hidlMemory;
diff --git a/graphics/composer/2.1/utils/vts/ComposerVts.cpp b/graphics/composer/2.1/utils/vts/ComposerVts.cpp
index 2f531b4..1cafafe 100644
--- a/graphics/composer/2.1/utils/vts/ComposerVts.cpp
+++ b/graphics/composer/2.1/utils/vts/ComposerVts.cpp
@@ -25,21 +25,19 @@
 namespace V2_1 {
 namespace vts {
 
-Composer::Composer() {
-    mComposer = ::testing::VtsHalHidlTargetTestBase::getService<IComposer>();
-    init();
-}
+Composer::Composer() : Composer(::testing::VtsHalHidlTargetTestBase::getService<IComposer>()) {}
 
-Composer::Composer(const std::string& name) {
-    mComposer = ::testing::VtsHalHidlTargetTestBase::getService<IComposer>(name);
-    init();
-}
+Composer::Composer(const std::string& name)
+    : Composer(::testing::VtsHalHidlTargetTestBase::getService<IComposer>(name)) {}
 
-void Composer::init() {
-    ASSERT_NE(nullptr, mComposer.get()) << "failed to get composer service";
+Composer::Composer(const sp<IComposer>& composer) : mComposer(composer) {
+    // ASSERT_* can only be used in functions returning void.
+    [this] {
+        ASSERT_NE(nullptr, mComposer.get()) << "failed to get composer service";
 
-    std::vector<IComposer::Capability> capabilities = getCapabilities();
-    mCapabilities.insert(capabilities.begin(), capabilities.end());
+        std::vector<IComposer::Capability> capabilities = getCapabilities();
+        mCapabilities.insert(capabilities.begin(), capabilities.end());
+    }();
 }
 
 sp<IComposer> Composer::getRaw() const {
@@ -295,7 +293,6 @@
     if (queueChanged) {
         auto ret = mClient->setInputCommandQueue(*writer->getMQDescriptor());
         ASSERT_EQ(Error::NONE, static_cast<Error>(ret));
-        return;
     }
 
     mClient->executeCommands(commandLength, commandHandles,
diff --git a/graphics/composer/2.1/utils/vts/TestCommandReader.cpp b/graphics/composer/2.1/utils/vts/TestCommandReader.cpp
index 6f8f1ad..454a89c 100644
--- a/graphics/composer/2.1/utils/vts/TestCommandReader.cpp
+++ b/graphics/composer/2.1/utils/vts/TestCommandReader.cpp
@@ -26,23 +26,55 @@
 namespace vts {
 
 void TestCommandReader::parse() {
+    mErrors.clear();
+    mCompositionChanges.clear();
     while (!isEmpty()) {
         IComposerClient::Command command;
         uint16_t length;
         ASSERT_TRUE(beginCommand(&command, &length));
 
         switch (command) {
+            case IComposerClient::Command::SELECT_DISPLAY:
+                ASSERT_EQ(2, length);
+                read64();  // display
+                break;
             case IComposerClient::Command::SET_ERROR: {
                 ASSERT_EQ(2, length);
                 auto loc = read();
                 auto err = readSigned();
-                GTEST_FAIL() << "unexpected error " << err << " at location " << loc;
+                std::pair<uint32_t, uint32_t> error(loc, err);
+                mErrors.push_back(error);
             } break;
-            case IComposerClient::Command::SELECT_DISPLAY:
             case IComposerClient::Command::SET_CHANGED_COMPOSITION_TYPES:
+                ASSERT_EQ(0, length % 3);
+                for (uint16_t count = 0; count < length / 3; ++count) {
+                    uint64_t layerId = read64();
+                    uint32_t composition = read();
+
+                    std::pair<uint64_t, uint32_t> compositionChange(layerId, composition);
+                    mCompositionChanges.push_back(compositionChange);
+                }
+                break;
             case IComposerClient::Command::SET_DISPLAY_REQUESTS:
+                ASSERT_EQ(1, length % 3);
+                read();  // displayRequests, ignored for now
+                for (uint16_t count = 0; count < (length - 1) / 3; ++count) {
+                    read64();  // layer
+                    // silently eat requests to clear the client target, since we won't be testing
+                    // client composition anyway
+                    ASSERT_EQ(1u, read());
+                }
+                break;
             case IComposerClient::Command::SET_PRESENT_FENCE:
+                ASSERT_EQ(1, length);
+                close(readFence());
+                break;
             case IComposerClient::Command::SET_RELEASE_FENCES:
+                ASSERT_EQ(0, length % 3);
+                for (uint16_t count = 0; count < length / 3; ++count) {
+                    read64();
+                    close(readFence());
+                }
                 break;
             default:
                 GTEST_FAIL() << "unexpected return command " << std::hex
diff --git a/graphics/composer/2.1/utils/vts/include/composer-vts/2.1/ComposerVts.h b/graphics/composer/2.1/utils/vts/include/composer-vts/2.1/ComposerVts.h
index 8d5493e..c97be76 100644
--- a/graphics/composer/2.1/utils/vts/include/composer-vts/2.1/ComposerVts.h
+++ b/graphics/composer/2.1/utils/vts/include/composer-vts/2.1/ComposerVts.h
@@ -57,10 +57,10 @@
     std::unique_ptr<ComposerClient> createClient();
 
    protected:
-    sp<IComposer> mComposer;
+    explicit Composer(const sp<IComposer>& composer);
 
    private:
-    void init();
+    const sp<IComposer> mComposer;
 
     std::unordered_set<IComposer::Capability> mCapabilities;
 };
@@ -68,7 +68,7 @@
 // A wrapper to IComposerClient.
 class ComposerClient {
    public:
-    ComposerClient(const sp<IComposerClient>& client);
+    explicit ComposerClient(const sp<IComposerClient>& client);
     ~ComposerClient();
 
     sp<IComposerClient> getRaw() const;
@@ -116,7 +116,7 @@
     std::unordered_map<Display, DisplayResource> mDisplayResources;
 
    private:
-    sp<IComposerClient> mClient;
+    const sp<IComposerClient> mClient;
 };
 
 }  // namespace vts
diff --git a/graphics/composer/2.1/utils/vts/include/composer-vts/2.1/TestCommandReader.h b/graphics/composer/2.1/utils/vts/include/composer-vts/2.1/TestCommandReader.h
index 3888eeb..c12debe 100644
--- a/graphics/composer/2.1/utils/vts/include/composer-vts/2.1/TestCommandReader.h
+++ b/graphics/composer/2.1/utils/vts/include/composer-vts/2.1/TestCommandReader.h
@@ -32,6 +32,9 @@
     // Parse all commands in the return command queue.  Call GTEST_FAIL() for
     // unexpected errors or commands.
     void parse();
+
+    std::vector<std::pair<uint32_t, uint32_t>> mErrors;
+    std::vector<std::pair<uint64_t, uint32_t>> mCompositionChanges;
 };
 
 }  // namespace vts
diff --git a/graphics/composer/2.1/vts/functional/VtsHalGraphicsComposerV2_1TargetTest.cpp b/graphics/composer/2.1/vts/functional/VtsHalGraphicsComposerV2_1TargetTest.cpp
index 72f3f1b..8b8c7ae 100644
--- a/graphics/composer/2.1/vts/functional/VtsHalGraphicsComposerV2_1TargetTest.cpp
+++ b/graphics/composer/2.1/vts/functional/VtsHalGraphicsComposerV2_1TargetTest.cpp
@@ -85,6 +85,13 @@
         // explicitly disable vsync
         mComposerClient->setVsyncEnabled(mPrimaryDisplay, false);
         mComposerCallback->setVsyncAllowed(false);
+
+        mInvalidDisplayId = GetInvalidDisplayId();
+
+        // Although 0 could be an invalid display, a return value of 0
+        // from GetInvalidDisplayId means all other ids are in use, a condition which
+        // we are assuming a device will never have
+        ASSERT_NE(0, mInvalidDisplayId);
     }
 
     void TearDown() override {
@@ -95,6 +102,23 @@
         }
     }
 
+    // returns an invalid display id (one that has not been registered to a
+    // display.  Currently assuming that a device will never have close to
+    // std::numeric_limit<uint64_t>::max() displays registered while running tests
+    Display GetInvalidDisplayId() {
+        std::vector<Display> validDisplays = mComposerCallback->getDisplays();
+
+        uint64_t id = std::numeric_limits<uint64_t>::max();
+        while (id > 0) {
+            if (std::find(validDisplays.begin(), validDisplays.end(), id) == validDisplays.end()) {
+                return id;
+            }
+            id--;
+        }
+
+        return 0;
+    }
+
     // use the slot count usually set by SF
     static constexpr uint32_t kBufferSlotCount = 64;
 
@@ -103,6 +127,7 @@
     sp<GraphicsComposerCallback> mComposerCallback;
     // the first display and is assumed never to be removed
     Display mPrimaryDisplay;
+    Display mInvalidDisplayId;
 
    private:
     Display waitForFirstDisplay() {
@@ -172,6 +197,22 @@
 }
 
 /**
+ * Test IComposerClient::destroyVirtualDisplay
+ *
+ * Test that passing a bad display handle to destroyVirtualDisplay
+ * returns a BAD_DISPLAY error
+ */
+TEST_F(GraphicsComposerHidlTest, DestroyVirtualDisplayBadDisplay) {
+    if (mComposerClient->getMaxVirtualDisplayCount() == 0) {
+        GTEST_SUCCEED() << "no virtual display support";
+        return;
+    }
+
+    Error error = mComposerClient->getRaw()->destroyVirtualDisplay(mInvalidDisplayId);
+    ASSERT_EQ(Error::BAD_DISPLAY, error);
+}
+
+/**
  * Test IComposerClient::createLayer and IComposerClient::destroyLayer.
  *
  * Test that layers can be created and destroyed.
@@ -185,6 +226,89 @@
 }
 
 /**
+ * Test IComposerClient::createLayer
+ *
+ * Test that passing in an invalid display handle to createLayer returns
+ * BAD_DISPLAY.
+ */
+TEST_F(GraphicsComposerHidlTest, CreateLayerBadDisplay) {
+    Error error;
+    mComposerClient->getRaw()->createLayer(
+        mInvalidDisplayId, kBufferSlotCount,
+        [&](const auto& tmpOutError, const auto&) { error = tmpOutError; });
+    ASSERT_EQ(Error::BAD_DISPLAY, error);
+}
+
+/**
+ * Test IComposerClient::destroyLayer
+ *
+ * Test that passing in an invalid display handle to destroyLayer returns
+ * BAD_DISPLAY
+ */
+TEST_F(GraphicsComposerHidlTest, DestroyLayerBadDisplay) {
+    Error error;
+    Layer layer;
+    ASSERT_NO_FATAL_FAILURE(layer =
+                                mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
+
+    error = mComposerClient->getRaw()->destroyLayer(mInvalidDisplayId, layer);
+
+    EXPECT_EQ(Error::BAD_DISPLAY, error);
+
+    ASSERT_NO_FATAL_FAILURE(mComposerClient->destroyLayer(mPrimaryDisplay, layer));
+}
+
+/**
+ * Test IComposerClient::destroyLayer
+ *
+ * Test that passing in an invalid layer handle to destroyLayer returns
+ * BAD_LAYER
+ */
+TEST_F(GraphicsComposerHidlTest, DestroyLayerBadLayerError) {
+    // We haven't created any layers yet, so any id should be invalid
+    Error error = mComposerClient->getRaw()->destroyLayer(mPrimaryDisplay, 1);
+
+    EXPECT_EQ(Error::BAD_LAYER, error);
+}
+
+/**
+ * Test IComposerClient::getActiveConfig
+ *
+ * Test that passing in a bad display handle to getActiveConfig generates a
+ * BAD_DISPLAY error
+ */
+TEST_F(GraphicsComposerHidlTest, GetActiveConfigBadDisplay) {
+    Error error;
+    mComposerClient->getRaw()->getActiveConfig(
+        mInvalidDisplayId, [&](const auto& tmpOutError, const auto&) { error = tmpOutError; });
+    ASSERT_EQ(Error::BAD_DISPLAY, error);
+}
+
+/**
+ * Test IComposerClient::getDisplayConfigs
+ *
+ * Test IComposerClient::getDisplayConfigs returns no error
+ * when passed in a valid display
+ */
+TEST_F(GraphicsComposerHidlTest, GetDisplayConfig) {
+    std::vector<Config> configs;
+    ASSERT_NO_FATAL_FAILURE(configs = mComposerClient->getDisplayConfigs(mPrimaryDisplay));
+}
+
+/**
+ * Test IComposerClient::getDisplayConfigs
+ *
+ * Test IComposerClient::getDisplayConfigs returns BAD_DISPLAY
+ * when passed in an invalid display handle
+ */
+TEST_F(GraphicsComposerHidlTest, GetDisplayConfigBadDisplay) {
+    Error error;
+    mComposerClient->getRaw()->getDisplayConfigs(
+        mInvalidDisplayId, [&](const auto& tmpOutError, const auto&) { error = tmpOutError; });
+    ASSERT_EQ(Error::BAD_DISPLAY, error);
+}
+
+/**
  * Test IComposerClient::getDisplayName.
  */
 TEST_F(GraphicsComposerHidlTest, GetDisplayName) {
@@ -226,6 +350,30 @@
 }
 
 /**
+ * Test IComposerClient::getClientTargetSupport
+ *
+ * Test that IComposerClient::getClientTargetSupport returns BAD_DISPLAY when
+ * passed an invalid display handle
+ */
+TEST_F(GraphicsComposerHidlTest, GetClientTargetSupportBadDisplay) {
+    std::vector<Config> configs = mComposerClient->getDisplayConfigs(mPrimaryDisplay);
+    for (auto config : configs) {
+        int32_t width = mComposerClient->getDisplayAttribute(mPrimaryDisplay, config,
+                                                             IComposerClient::Attribute::WIDTH);
+        int32_t height = mComposerClient->getDisplayAttribute(mPrimaryDisplay, config,
+                                                              IComposerClient::Attribute::HEIGHT);
+        ASSERT_LT(0, width);
+        ASSERT_LT(0, height);
+
+        mComposerClient->setActiveConfig(mPrimaryDisplay, config);
+
+        Error error = mComposerClient->getRaw()->getClientTargetSupport(
+            mInvalidDisplayId, width, height, PixelFormat::RGBA_8888, Dataspace::UNKNOWN);
+        EXPECT_EQ(Error::BAD_DISPLAY, error);
+    }
+}
+
+/**
  * Test IComposerClient::getDisplayAttribute.
  *
  * Test that IComposerClient::getDisplayAttribute succeeds for the required
@@ -287,6 +435,43 @@
 }
 
 /**
+ * Test IComposerClient::setActiveConfig
+ *
+ * Test that config set during IComposerClient::setActiveConfig is maintained
+ * during a display on/off power cycle
+ */
+TEST_F(GraphicsComposerHidlTest, SetActiveConfigPowerCycle) {
+    ASSERT_NO_FATAL_FAILURE(
+        mComposerClient->setPowerMode(mPrimaryDisplay, IComposerClient::PowerMode::OFF));
+    ASSERT_NO_FATAL_FAILURE(
+        mComposerClient->setPowerMode(mPrimaryDisplay, IComposerClient::PowerMode::ON));
+
+    std::vector<Config> configs = mComposerClient->getDisplayConfigs(mPrimaryDisplay);
+    for (auto config : configs) {
+        mComposerClient->setActiveConfig(mPrimaryDisplay, config);
+        ASSERT_EQ(config, mComposerClient->getActiveConfig(mPrimaryDisplay));
+
+        ASSERT_NO_FATAL_FAILURE(
+            mComposerClient->setPowerMode(mPrimaryDisplay, IComposerClient::PowerMode::OFF));
+        ASSERT_NO_FATAL_FAILURE(
+            mComposerClient->setPowerMode(mPrimaryDisplay, IComposerClient::PowerMode::ON));
+        ASSERT_EQ(config, mComposerClient->getActiveConfig(mPrimaryDisplay));
+    }
+}
+
+/**
+ * Test IComposerClient::getColorMode
+ *
+ * Test that IComposerClient::getColorMode always returns ColorMode::NATIVE
+ */
+TEST_F(GraphicsComposerHidlTest, GetColorModes) {
+    std::vector<ColorMode> modes = mComposerClient->getColorModes(mPrimaryDisplay);
+    auto nativeModeLocation = std::find(modes.begin(), modes.end(), ColorMode::NATIVE);
+
+    ASSERT_NE(modes.end(), nativeModeLocation);
+}
+
+/**
  * Test IComposerClient::setColorMode.
  *
  * Test that IComposerClient::setColorMode succeeds for all color modes.
@@ -306,6 +491,45 @@
 }
 
 /**
+ * Test IComposerClient::setColorMode
+ *
+ * Test that IComposerClient::setColorMode returns BAD_DISPLAY for
+ * an invalid display handle
+ */
+TEST_F(GraphicsComposerHidlTest, SetColorModeBadDisplay) {
+    std::vector<ColorMode> modes = mComposerClient->getColorModes(mPrimaryDisplay);
+    for (auto mode : modes) {
+        Error error = mComposerClient->getRaw()->setColorMode(mInvalidDisplayId, mode);
+        EXPECT_EQ(Error::BAD_DISPLAY, error);
+    }
+}
+
+/**
+ * Test IComposerClient::setColorMode
+ *
+ * Test that IComposerClient::setColorMode returns BAD_PARAMETER when passed in
+ * an invalid color mode
+ */
+TEST_F(GraphicsComposerHidlTest, SetColorModeBadParameter) {
+    Error error =
+        mComposerClient->getRaw()->setColorMode(mPrimaryDisplay, static_cast<ColorMode>(-1));
+    ASSERT_EQ(Error::BAD_PARAMETER, error);
+}
+
+/**
+ * Test IComposerClient::getDozeSupport
+ *
+ * Test that IComposerClient::getDozeSupport returns
+ * BAD_DISPLAY when passed an invalid display handle
+ */
+TEST_F(GraphicsComposerHidlTest, GetDozeSupportBadDisplay) {
+    Error error;
+    mComposerClient->getRaw()->getDozeSupport(
+        mInvalidDisplayId, [&](const auto& tmpOutError, const auto&) { error = tmpOutError; });
+    ASSERT_EQ(Error::BAD_DISPLAY, error);
+}
+
+/**
  * Test IComposerClient::setPowerMode.
  *
  * Test that IComposerClient::setPowerMode succeeds for all power modes.
@@ -328,6 +552,99 @@
 }
 
 /**
+ * Test IComposerClient::setPowerMode
+ *
+ * Test IComposerClient::setPowerMode succeeds with different
+ * orderings of power modes
+ */
+TEST_F(GraphicsComposerHidlTest, SetPowerModeVariations) {
+    std::vector<IComposerClient::PowerMode> modes;
+    modes.push_back(IComposerClient::PowerMode::OFF);
+    modes.push_back(IComposerClient::PowerMode::ON);
+    modes.push_back(IComposerClient::PowerMode::OFF);
+    for (auto mode : modes) {
+        ASSERT_NO_FATAL_FAILURE(mComposerClient->setPowerMode(mPrimaryDisplay, mode));
+    }
+
+    modes.clear();
+
+    modes.push_back(IComposerClient::PowerMode::OFF);
+    modes.push_back(IComposerClient::PowerMode::OFF);
+    for (auto mode : modes) {
+        ASSERT_NO_FATAL_FAILURE(mComposerClient->setPowerMode(mPrimaryDisplay, mode));
+    }
+
+    modes.clear();
+
+    modes.push_back(IComposerClient::PowerMode::ON);
+    modes.push_back(IComposerClient::PowerMode::ON);
+    for (auto mode : modes) {
+        ASSERT_NO_FATAL_FAILURE(mComposerClient->setPowerMode(mPrimaryDisplay, mode));
+    }
+
+    modes.clear();
+    if (mComposerClient->getDozeSupport(mPrimaryDisplay)) {
+        modes.push_back(IComposerClient::PowerMode::DOZE);
+        modes.push_back(IComposerClient::PowerMode::DOZE);
+
+        for (auto mode : modes) {
+            ASSERT_NO_FATAL_FAILURE(mComposerClient->setPowerMode(mPrimaryDisplay, mode));
+        }
+
+        modes.clear();
+
+        modes.push_back(IComposerClient::PowerMode::DOZE_SUSPEND);
+        modes.push_back(IComposerClient::PowerMode::DOZE_SUSPEND);
+
+        for (auto mode : modes) {
+            ASSERT_NO_FATAL_FAILURE(mComposerClient->setPowerMode(mPrimaryDisplay, mode));
+        }
+    }
+}
+
+/**
+ * Test IComposerClient::setPowerMode
+ *
+ * Test IComposerClient::setPowerMode returns BAD_DISPLAY when passed an invalid
+ * display handle
+ */
+TEST_F(GraphicsComposerHidlTest, SetPowerModeBadDisplay) {
+    Error error =
+        mComposerClient->getRaw()->setPowerMode(mInvalidDisplayId, IComposerClient::PowerMode::ON);
+    ASSERT_EQ(Error::BAD_DISPLAY, error);
+}
+
+/**
+ * Test IComposerClient::setPowerMode
+ *
+ * Test that IComposerClient::setPowerMode returns UNSUPPORTED when passed DOZE
+ * or DOZE_SUSPEND on devices that do not support DOZE/DOZE_SUSPEND
+ */
+TEST_F(GraphicsComposerHidlTest, SetPowerModeUnsupported) {
+    if (!mComposerClient->getDozeSupport(mPrimaryDisplay)) {
+        Error error = mComposerClient->getRaw()->setPowerMode(mPrimaryDisplay,
+                                                              IComposerClient::PowerMode::DOZE);
+        EXPECT_EQ(Error::UNSUPPORTED, error);
+
+        error = mComposerClient->getRaw()->setPowerMode(mPrimaryDisplay,
+                                                        IComposerClient::PowerMode::DOZE_SUSPEND);
+        EXPECT_EQ(Error::UNSUPPORTED, error);
+    }
+}
+
+/**
+ * Test IComposerClient::setPowerMode
+ *
+ * Tests that IComposerClient::setPowerMode returns BAD_PARAMETER when passed an invalid
+ * PowerMode
+ */
+TEST_F(GraphicsComposerHidlTest, SetPowerModeBadParameter) {
+    Error error = mComposerClient->getRaw()->setPowerMode(
+        mPrimaryDisplay, static_cast<IComposerClient::PowerMode>(-1));
+    ASSERT_EQ(Error::BAD_PARAMETER, error);
+}
+
+/**
  * Test IComposerClient::setVsyncEnabled.
  *
  * Test that IComposerClient::setVsyncEnabled succeeds and there is no
@@ -355,7 +672,10 @@
         mReader = std::make_unique<TestCommandReader>();
     }
 
-    void TearDown() override { ASSERT_NO_FATAL_FAILURE(GraphicsComposerHidlTest::TearDown()); }
+    void TearDown() override {
+        ASSERT_EQ(0, mReader->mErrors.size());
+        ASSERT_NO_FATAL_FAILURE(GraphicsComposerHidlTest::TearDown());
+    }
 
     const native_handle_t* allocate() {
         IMapper::BufferDescriptorInfo info{};
diff --git a/graphics/composer/2.2/utils/vts/ComposerVts.cpp b/graphics/composer/2.2/utils/vts/ComposerVts.cpp
index 6a32071..d8fb656 100644
--- a/graphics/composer/2.2/utils/vts/ComposerVts.cpp
+++ b/graphics/composer/2.2/utils/vts/ComposerVts.cpp
@@ -27,32 +27,31 @@
 namespace V2_2 {
 namespace vts {
 
-using android::hardware::details::canCastInterface;
-using android::hardware::details::getDescriptor;
-using android::hardware::graphics::composer::V2_2::IComposerClient;
+using details::canCastInterface;
+using details::getDescriptor;
 
-std::unique_ptr<ComposerClient_v2_2> Composer_v2_2::createClient_v2_2() {
-    std::unique_ptr<ComposerClient_v2_2> client;
-    mComposer->createClient([&](const auto& tmpError, const auto& tmpClient) {
+std::unique_ptr<ComposerClient> Composer::createClient() {
+    std::unique_ptr<ComposerClient> client;
+    getRaw()->createClient([&](const auto& tmpError, const auto& tmpClient) {
         ASSERT_EQ(Error::NONE, tmpError) << "failed to create client";
         ALOGV("tmpClient is a %s", getDescriptor(&(*tmpClient)).c_str());
         ASSERT_TRUE(canCastInterface(
             &(*tmpClient), "android.hardware.graphics.composer@2.2::IComposerClient", false))
             << "Cannot create 2.2 IComposerClient";
-        client = std::make_unique<ComposerClient_v2_2>(IComposerClient::castFrom(tmpClient, true));
+        client = std::make_unique<ComposerClient>(IComposerClient::castFrom(tmpClient, true));
     });
 
     return client;
 }
 
-sp<V2_2::IComposerClient> ComposerClient_v2_2::getRaw() const {
-    return mClient_v2_2;
+sp<IComposerClient> ComposerClient::getRaw() const {
+    return mClient;
 }
 
-std::vector<IComposerClient::PerFrameMetadataKey> ComposerClient_v2_2::getPerFrameMetadataKeys(
+std::vector<IComposerClient::PerFrameMetadataKey> ComposerClient::getPerFrameMetadataKeys(
     Display display) {
     std::vector<IComposerClient::PerFrameMetadataKey> keys;
-    mClient_v2_2->getPerFrameMetadataKeys(display, [&](const auto& tmpError, const auto& tmpKeys) {
+    mClient->getPerFrameMetadataKeys(display, [&](const auto& tmpError, const auto& tmpKeys) {
         ASSERT_EQ(Error::NONE, tmpError) << "failed to get HDR metadata keys";
         keys = tmpKeys;
     });
@@ -60,43 +59,41 @@
     return keys;
 }
 
-void ComposerClient_v2_2::execute_v2_2(V2_1::vts::TestCommandReader* reader,
-                                       V2_2::CommandWriterBase* writer) {
+void ComposerClient::execute(V2_1::vts::TestCommandReader* reader, CommandWriterBase* writer) {
     bool queueChanged = false;
     uint32_t commandLength = 0;
     hidl_vec<hidl_handle> commandHandles;
     ASSERT_TRUE(writer->writeQueue(&queueChanged, &commandLength, &commandHandles));
 
     if (queueChanged) {
-        auto ret = mClient_v2_2->setInputCommandQueue(*writer->getMQDescriptor());
+        auto ret = mClient->setInputCommandQueue(*writer->getMQDescriptor());
         ASSERT_EQ(Error::NONE, static_cast<Error>(ret));
-        return;
     }
 
-    mClient_v2_2->executeCommands(commandLength, commandHandles,
-                                  [&](const auto& tmpError, const auto& tmpOutQueueChanged,
-                                      const auto& tmpOutLength, const auto& tmpOutHandles) {
-                                      ASSERT_EQ(Error::NONE, tmpError);
+    mClient->executeCommands(commandLength, commandHandles,
+                             [&](const auto& tmpError, const auto& tmpOutQueueChanged,
+                                 const auto& tmpOutLength, const auto& tmpOutHandles) {
+                                 ASSERT_EQ(Error::NONE, tmpError);
 
-                                      if (tmpOutQueueChanged) {
-                                          mClient_v2_2->getOutputCommandQueue(
-                                              [&](const auto& tmpError, const auto& tmpDescriptor) {
-                                                  ASSERT_EQ(Error::NONE, tmpError);
-                                                  reader->setMQDescriptor(tmpDescriptor);
-                                              });
-                                      }
+                                 if (tmpOutQueueChanged) {
+                                     mClient->getOutputCommandQueue(
+                                         [&](const auto& tmpError, const auto& tmpDescriptor) {
+                                             ASSERT_EQ(Error::NONE, tmpError);
+                                             reader->setMQDescriptor(tmpDescriptor);
+                                         });
+                                 }
 
-                                      ASSERT_TRUE(reader->readQueue(tmpOutLength, tmpOutHandles));
-                                      reader->parse();
-                                  });
+                                 ASSERT_TRUE(reader->readQueue(tmpOutLength, tmpOutHandles));
+                                 reader->parse();
+                             });
 }
 
-Display ComposerClient_v2_2::createVirtualDisplay_2_2(uint32_t width, uint32_t height,
-                                                      PixelFormat formatHint,
-                                                      uint32_t outputBufferSlotCount,
-                                                      PixelFormat* outFormat) {
+Display ComposerClient::createVirtualDisplay_2_2(uint32_t width, uint32_t height,
+                                                 PixelFormat formatHint,
+                                                 uint32_t outputBufferSlotCount,
+                                                 PixelFormat* outFormat) {
     Display display = 0;
-    mClient_v2_2->createVirtualDisplay_2_2(
+    mClient->createVirtualDisplay_2_2(
         width, height, formatHint, outputBufferSlotCount,
         [&](const auto& tmpError, const auto& tmpDisplay, const auto& tmpFormat) {
             ASSERT_EQ(Error::NONE, tmpError) << "failed to create virtual display";
@@ -110,29 +107,27 @@
     return display;
 }
 
-bool ComposerClient_v2_2::getClientTargetSupport_2_2(Display display, uint32_t width,
-                                                     uint32_t height, PixelFormat format,
-                                                     Dataspace dataspace) {
-    Error error =
-        mClient_v2_2->getClientTargetSupport_2_2(display, width, height, format, dataspace);
+bool ComposerClient::getClientTargetSupport_2_2(Display display, uint32_t width, uint32_t height,
+                                                PixelFormat format, Dataspace dataspace) {
+    Error error = mClient->getClientTargetSupport_2_2(display, width, height, format, dataspace);
     return error == Error::NONE;
 }
 
-void ComposerClient_v2_2::setPowerMode_2_2(Display display, V2_2::IComposerClient::PowerMode mode) {
-    Error error = mClient_v2_2->setPowerMode_2_2(display, mode);
+void ComposerClient::setPowerMode_2_2(Display display, IComposerClient::PowerMode mode) {
+    Error error = mClient->setPowerMode_2_2(display, mode);
     ASSERT_TRUE(error == Error::NONE || error == Error::UNSUPPORTED) << "failed to set power mode";
 }
 
-void ComposerClient_v2_2::setReadbackBuffer(Display display, const native_handle_t* buffer,
-                                            int32_t /* releaseFence */) {
+void ComposerClient::setReadbackBuffer(Display display, const native_handle_t* buffer,
+                                       int32_t /* releaseFence */) {
     // Ignoring fence, HIDL doesn't care
-    Error error = mClient_v2_2->setReadbackBuffer(display, buffer, nullptr);
+    Error error = mClient->setReadbackBuffer(display, buffer, nullptr);
     ASSERT_EQ(Error::NONE, error) << "failed to setReadbackBuffer";
 }
 
-void ComposerClient_v2_2::getReadbackBufferAttributes(Display display, PixelFormat* outPixelFormat,
-                                                      Dataspace* outDataspace) {
-    mClient_v2_2->getReadbackBufferAttributes(
+void ComposerClient::getReadbackBufferAttributes(Display display, PixelFormat* outPixelFormat,
+                                                 Dataspace* outDataspace) {
+    mClient->getReadbackBufferAttributes(
         display,
         [&](const auto& tmpError, const auto& tmpOutPixelFormat, const auto& tmpOutDataspace) {
             ASSERT_EQ(Error::NONE, tmpError) << "failed to get readback buffer attributes";
@@ -141,42 +136,40 @@
         });
 }
 
-void ComposerClient_v2_2::getReadbackBufferFence(Display display, int32_t* outFence) {
-    hidl_handle handle;
-    mClient_v2_2->getReadbackBufferFence(display, [&](const auto& tmpError, const auto& tmpHandle) {
+void ComposerClient::getReadbackBufferFence(Display display, int32_t* outFence) {
+    mClient->getReadbackBufferFence(display, [&](const auto& tmpError, const auto& tmpHandle) {
         ASSERT_EQ(Error::NONE, tmpError) << "failed to get readback fence";
-        handle = tmpHandle;
+        const native_handle_t* nativeFenceHandle = tmpHandle.getNativeHandle();
+        *outFence = dup(nativeFenceHandle->data[0]);
     });
-    *outFence = 0;
 }
 
-std::vector<ColorMode> ComposerClient_v2_2::getColorModes(Display display) {
+std::vector<ColorMode> ComposerClient::getColorModes(Display display) {
     std::vector<ColorMode> modes;
-    mClient_v2_2->getColorModes_2_2(display, [&](const auto& tmpError, const auto& tmpModes) {
+    mClient->getColorModes_2_2(display, [&](const auto& tmpError, const auto& tmpModes) {
         ASSERT_EQ(Error::NONE, tmpError) << "failed to get color modes";
         modes = tmpModes;
     });
     return modes;
 }
 
-std::vector<RenderIntent> ComposerClient_v2_2::getRenderIntents(Display display, ColorMode mode) {
+std::vector<RenderIntent> ComposerClient::getRenderIntents(Display display, ColorMode mode) {
     std::vector<RenderIntent> intents;
-    mClient_v2_2->getRenderIntents(
-        display, mode, [&](const auto& tmpError, const auto& tmpIntents) {
-            ASSERT_EQ(Error::NONE, tmpError) << "failed to get render intents";
-            intents = tmpIntents;
-        });
+    mClient->getRenderIntents(display, mode, [&](const auto& tmpError, const auto& tmpIntents) {
+        ASSERT_EQ(Error::NONE, tmpError) << "failed to get render intents";
+        intents = tmpIntents;
+    });
     return intents;
 }
 
-void ComposerClient_v2_2::setColorMode(Display display, ColorMode mode, RenderIntent intent) {
-    Error error = mClient_v2_2->setColorMode_2_2(display, mode, intent);
+void ComposerClient::setColorMode(Display display, ColorMode mode, RenderIntent intent) {
+    Error error = mClient->setColorMode_2_2(display, mode, intent);
     ASSERT_TRUE(error == Error::NONE || error == Error::UNSUPPORTED) << "failed to set color mode";
 }
 
-std::array<float, 16> ComposerClient_v2_2::getDataspaceSaturationMatrix(Dataspace dataspace) {
+std::array<float, 16> ComposerClient::getDataspaceSaturationMatrix(Dataspace dataspace) {
     std::array<float, 16> matrix;
-    mClient_v2_2->getDataspaceSaturationMatrix(
+    mClient->getDataspaceSaturationMatrix(
         dataspace, [&](const auto& tmpError, const auto& tmpMatrix) {
             ASSERT_EQ(Error::NONE, tmpError) << "failed to get datasapce saturation matrix";
             std::copy_n(tmpMatrix.data(), matrix.size(), matrix.begin());
diff --git a/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/ComposerVts.h b/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/ComposerVts.h
index 1c6d7ae..2633021 100644
--- a/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/ComposerVts.h
+++ b/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/ComposerVts.h
@@ -36,36 +36,31 @@
 namespace V2_2 {
 namespace vts {
 
-using android::hardware::graphics::common::V1_0::Hdr;
-using android::hardware::graphics::common::V1_1::ColorMode;
-using android::hardware::graphics::common::V1_1::Dataspace;
-using android::hardware::graphics::common::V1_1::PixelFormat;
-using android::hardware::graphics::common::V1_1::RenderIntent;
-using android::hardware::graphics::composer::V2_2::IComposer;
-using android::hardware::graphics::composer::V2_2::IComposerClient;
+using common::V1_0::Hdr;
+using common::V1_1::ColorMode;
+using common::V1_1::Dataspace;
+using common::V1_1::PixelFormat;
+using common::V1_1::RenderIntent;
 
-class ComposerClient_v2_2;
+class ComposerClient;
 
-// Only thing I need for Composer_v2_2 is to create a v2_2 ComposerClient
-// Everything else is the same
-class Composer_v2_2 : public V2_1::vts::Composer {
+// A wrapper to IComposer.
+class Composer : public V2_1::vts::Composer {
    public:
-    Composer_v2_2() : V2_1::vts::Composer(){};
-    explicit Composer_v2_2(const std::string& name) : V2_1::vts::Composer(name){};
+    using V2_1::vts::Composer::Composer;
 
-    std::unique_ptr<ComposerClient_v2_2> createClient_v2_2();
+    std::unique_ptr<ComposerClient> createClient();
 };
 
 // A wrapper to IComposerClient.
-class ComposerClient_v2_2
-    : public android::hardware::graphics::composer::V2_1::vts::ComposerClient {
+class ComposerClient : public V2_1::vts::ComposerClient {
    public:
-    ComposerClient_v2_2(const sp<IComposerClient>& client)
-        : V2_1::vts::ComposerClient(client), mClient_v2_2(client){};
+    explicit ComposerClient(const sp<IComposerClient>& client)
+        : V2_1::vts::ComposerClient(client), mClient(client) {}
 
-    sp<V2_2::IComposerClient> getRaw() const;
+    sp<IComposerClient> getRaw() const;
 
-    void execute_v2_2(V2_1::vts::TestCommandReader* reader, V2_2::CommandWriterBase* writer);
+    void execute(V2_1::vts::TestCommandReader* reader, CommandWriterBase* writer);
 
     std::vector<IComposerClient::PerFrameMetadataKey> getPerFrameMetadataKeys(Display display);
 
@@ -73,7 +68,7 @@
                                      uint32_t outputBufferSlotCount, PixelFormat* outFormat);
     bool getClientTargetSupport_2_2(Display display, uint32_t width, uint32_t height,
                                     PixelFormat format, Dataspace dataspace);
-    void setPowerMode_2_2(Display display, V2_2::IComposerClient::PowerMode mode);
+    void setPowerMode_2_2(Display display, IComposerClient::PowerMode mode);
     void setReadbackBuffer(Display display, const native_handle_t* buffer, int32_t releaseFence);
     void getReadbackBufferAttributes(Display display, PixelFormat* outPixelFormat,
                                      Dataspace* outDataspace);
@@ -86,7 +81,7 @@
     std::array<float, 16> getDataspaceSaturationMatrix(Dataspace dataspace);
 
    private:
-    sp<V2_2::IComposerClient> mClient_v2_2;
+    const sp<IComposerClient> mClient;
 };
 
 }  // namespace vts
diff --git a/graphics/composer/2.2/vts/functional/Android.bp b/graphics/composer/2.2/vts/functional/Android.bp
index 669fbae..acc9245 100644
--- a/graphics/composer/2.2/vts/functional/Android.bp
+++ b/graphics/composer/2.2/vts/functional/Android.bp
@@ -17,12 +17,15 @@
 cc_test {
     name: "VtsHalGraphicsComposerV2_2TargetTest",
     defaults: ["VtsHalTargetTestDefaults"],
-    srcs: ["VtsHalGraphicsComposerV2_2TargetTest.cpp"],
+    srcs: [
+        "VtsHalGraphicsComposerV2_2ReadbackTest.cpp",
+        "VtsHalGraphicsComposerV2_2TargetTest.cpp",
+    ],
 
     // TODO(b/64437680): Assume these libs are always available on the device.
     shared_libs: [
         "libfmq",
-	"libhidltransport",
+        "libhidltransport",
         "libsync",
     ],
     static_libs: [
diff --git a/graphics/composer/2.2/vts/functional/VtsHalGraphicsComposerV2_2ReadbackTest.cpp b/graphics/composer/2.2/vts/functional/VtsHalGraphicsComposerV2_2ReadbackTest.cpp
new file mode 100644
index 0000000..91318bc
--- /dev/null
+++ b/graphics/composer/2.2/vts/functional/VtsHalGraphicsComposerV2_2ReadbackTest.cpp
@@ -0,0 +1,323 @@
+/*
+ * 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.
+ */
+
+#define LOG_TAG "graphics_composer_hidl_hal_readback_tests@2.2"
+
+#include <VtsHalHidlTargetTestBase.h>
+#include <VtsHalHidlTargetTestEnvBase.h>
+#include <android-base/unique_fd.h>
+#include <android/hardware/graphics/composer/2.2/IComposerClient.h>
+#include <composer-command-buffer/2.2/ComposerCommandBuffer.h>
+#include <composer-vts/2.1/GraphicsComposerCallback.h>
+#include <composer-vts/2.1/TestCommandReader.h>
+#include <composer-vts/2.2/ComposerVts.h>
+#include <mapper-vts/2.1/MapperVts.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_2 {
+namespace vts {
+namespace {
+
+using android::hardware::hidl_handle;
+using common::V1_1::BufferUsage;
+using common::V1_1::Dataspace;
+using common::V1_1::PixelFormat;
+using mapper::V2_1::IMapper;
+using mapper::V2_1::vts::Gralloc;
+using V2_1::Display;
+using V2_1::Layer;
+using V2_1::vts::TestCommandReader;
+
+// Test environment for graphics.composer
+class GraphicsComposerHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
+   public:
+    // get the test environment singleton
+    static GraphicsComposerHidlEnvironment* Instance() {
+        static GraphicsComposerHidlEnvironment* instance = new GraphicsComposerHidlEnvironment;
+        return instance;
+    }
+    virtual void registerTestServices() override { registerTestService<IComposer>(); }
+
+   private:
+    GraphicsComposerHidlEnvironment() {}
+    GTEST_DISALLOW_COPY_AND_ASSIGN_(GraphicsComposerHidlEnvironment);
+};
+
+class TestLayer {
+   public:
+    TestLayer(std::shared_ptr<ComposerClient> const client, Display display)
+        : mLayer(client->createLayer(display, kBufferSlotCount)),
+          mComposerClient(client),
+          mDisplay(display) {}
+
+    virtual ~TestLayer() { mComposerClient->destroyLayer(mDisplay, mLayer); }
+
+    virtual void write(std::shared_ptr<CommandWriterBase> writer) {
+        writer->selectLayer(mLayer);
+        writer->setLayerDisplayFrame(mDisplayFrame);
+        writer->setLayerZOrder(mZOrder);
+    }
+
+    void setDisplayFrame(IComposerClient::Rect frame) { mDisplayFrame = frame; }
+    void setZOrder(uint32_t z) { mZOrder = z; }
+
+   protected:
+    Layer mLayer;
+    IComposerClient::Rect mDisplayFrame = {0, 0, 0, 0};
+    uint32_t mZOrder = 0;
+
+   private:
+    std::shared_ptr<ComposerClient> const mComposerClient;
+    const Display mDisplay;
+    static constexpr uint32_t kBufferSlotCount = 64;
+};
+
+class TestColorLayer : public TestLayer {
+   public:
+    TestColorLayer(std::shared_ptr<ComposerClient> const client, Display display)
+        : TestLayer{client, display} {}
+
+    void write(std::shared_ptr<CommandWriterBase> writer) override {
+        TestLayer::write(writer);
+        writer->setLayerCompositionType(IComposerClient::Composition::SOLID_COLOR);
+        writer->setLayerColor(mColor);
+    }
+
+    void setColor(IComposerClient::Color color) { mColor = color; }
+
+   private:
+    IComposerClient::Color mColor = {0xff, 0xff, 0xff, 0xff};
+};
+
+class GraphicsComposerReadbackTest : public ::testing::VtsHalHidlTargetTestBase {
+   protected:
+    using PowerMode = V2_1::IComposerClient::PowerMode;
+    void SetUp() override {
+        ASSERT_NO_FATAL_FAILURE(
+            mComposer = std::make_unique<Composer>(
+                GraphicsComposerHidlEnvironment::Instance()->getServiceName<IComposer>()));
+        ASSERT_NO_FATAL_FAILURE(mComposerClient = mComposer->createClient());
+        mComposerCallback = new V2_1::vts::GraphicsComposerCallback;
+        mComposerClient->registerCallback(mComposerCallback);
+
+        // assume the first display is primary and is never removed
+        mPrimaryDisplay = waitForFirstDisplay();
+        Config activeConfig = mComposerClient->getActiveConfig(mPrimaryDisplay);
+        mDisplayWidth = mComposerClient->getDisplayAttribute(mPrimaryDisplay, activeConfig,
+                                                             IComposerClient::Attribute::WIDTH);
+        mDisplayHeight = mComposerClient->getDisplayAttribute(mPrimaryDisplay, activeConfig,
+                                                              IComposerClient::Attribute::HEIGHT);
+
+        // explicitly disable vsync
+        mComposerClient->setVsyncEnabled(mPrimaryDisplay, false);
+        mComposerCallback->setVsyncAllowed(false);
+
+        // set up command writer/reader and gralloc
+        mWriter = std::make_shared<CommandWriterBase>(1024);
+        mReader = std::make_unique<TestCommandReader>();
+        mGralloc = std::make_unique<Gralloc>();
+
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+            mPrimaryDisplay, [&](const auto& tmpError, const auto&, const auto&) {
+                mHasReadbackBuffer = tmpError == Error::NONE;
+            });
+    }
+
+    ~GraphicsComposerReadbackTest() override {
+        if (mComposerCallback != nullptr) {
+            EXPECT_EQ(0, mComposerCallback->getInvalidHotplugCount());
+            EXPECT_EQ(0, mComposerCallback->getInvalidRefreshCount());
+            EXPECT_EQ(0, mComposerCallback->getInvalidVsyncCount());
+        }
+    }
+
+    void execute() { mComposerClient->execute(mReader.get(), mWriter.get()); }
+
+    void render(const std::vector<std::shared_ptr<TestLayer>>& layers) {
+        for (auto layer : layers) {
+            layer->write(mWriter);
+        }
+        execute();
+        mWriter->validateDisplay();
+        mWriter->presentDisplay();
+        execute();
+    }
+
+    int32_t GetBytesPerPixel(PixelFormat format) {
+        switch (format) {
+            case PixelFormat::RGBA_8888:
+                return 4;
+            case PixelFormat::RGB_888:
+                return 3;
+            default:
+                return -1;
+        }
+    }
+
+    bool readbackSupported(const PixelFormat& pixelFormat, const Dataspace& dataspace,
+                           const Error error) {
+        if (error == Error::UNSUPPORTED) {
+            return false;
+        }
+        // TODO: add support for RGBA_1010102
+        if (pixelFormat != PixelFormat::RGB_888 && pixelFormat != PixelFormat::RGBA_8888) {
+            return false;
+        }
+        if (dataspace != Dataspace::V0_SRGB) {
+            return false;
+        }
+        return true;
+    }
+
+    void getReadbackBufferAttributes(Display display, PixelFormat* outPixelFormat,
+                                     Dataspace* outDataspace) {
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+            display, [&](const auto&, const auto& tmpOutPixelFormat, const auto& tmpOutDataspace) {
+                *outPixelFormat = tmpOutPixelFormat;
+                *outDataspace = tmpOutDataspace;
+            });
+    }
+
+    void checkReadbackBuffer(IMapper::BufferDescriptorInfo info, uint32_t stride, void* bufferData,
+                             std::vector<IComposerClient::Color> expectedColors) {
+        int32_t bytesPerPixel = GetBytesPerPixel(info.format);
+        ASSERT_NE(-1, bytesPerPixel)
+            << "unexpected pixel format " << static_cast<int32_t>(info.format)
+            << "(expected RGBA_8888 or RGB_888)";
+        for (int row = 0; row < mDisplayHeight; row++) {
+            for (int col = 0; col < mDisplayWidth; col++) {
+                int pixel = row * mDisplayWidth + col;
+                int offset = (row * stride + col) * bytesPerPixel;
+                uint8_t* pixelColor = (uint8_t*)bufferData + offset;
+
+                EXPECT_EQ(expectedColors[pixel].r, pixelColor[0]);
+                EXPECT_EQ(expectedColors[pixel].g, pixelColor[1]);
+                EXPECT_EQ(expectedColors[pixel].b, pixelColor[2]);
+            }
+        }
+    }
+
+    std::unique_ptr<Composer> mComposer;
+    std::shared_ptr<ComposerClient> mComposerClient;
+
+    sp<V2_1::vts::GraphicsComposerCallback> mComposerCallback;
+    // the first display and is assumed never to be removed
+    Display mPrimaryDisplay;
+    int32_t mDisplayWidth;
+    int32_t mDisplayHeight;
+    std::shared_ptr<CommandWriterBase> mWriter;
+    std::unique_ptr<TestCommandReader> mReader;
+    std::unique_ptr<Gralloc> mGralloc;
+
+    bool mHasReadbackBuffer;
+
+   private:
+    Display waitForFirstDisplay() {
+        while (true) {
+            std::vector<Display> displays = mComposerCallback->getDisplays();
+            if (displays.empty()) {
+                usleep(5 * 1000);
+                continue;
+            }
+            return displays[0];
+        }
+    }
+};
+
+TEST_F(GraphicsComposerReadbackTest, SingleSolidColorLayer) {
+    if (!mHasReadbackBuffer) {
+        GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+        return;
+    }
+    mWriter->selectDisplay(mPrimaryDisplay);
+    mComposerClient->setPowerMode(mPrimaryDisplay, PowerMode::ON);
+    mComposerClient->setColorMode(mPrimaryDisplay, ColorMode::SRGB, RenderIntent::COLORIMETRIC);
+
+    auto layer = std::make_shared<TestColorLayer>(mComposerClient, mPrimaryDisplay);
+    IComposerClient::Color color({0, 0, 0xff, 0xff});
+    IComposerClient::Rect coloredSquare({100, 100, 500, 500});
+    layer->setColor(color);
+    layer->setDisplayFrame(coloredSquare);
+    layer->setZOrder(10);
+
+    std::vector<std::shared_ptr<TestLayer>> layers = {layer};
+
+    // expected color for each pixel
+    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+    for (int row = 0; row < mDisplayHeight; row++) {
+        for (int col = 0; col < mDisplayWidth; col++) {
+            int pixel = row * mDisplayWidth + col;
+            if (row >= coloredSquare.top && row < coloredSquare.bottom &&
+                col >= coloredSquare.left && col < coloredSquare.right) {
+                expectedColors[pixel] = color;
+            } else {
+                expectedColors[pixel] = {0, 0, 0, 0xff};
+            }
+        }
+    }
+
+    PixelFormat pixelFormat;
+    Dataspace dataspace;
+
+    getReadbackBufferAttributes(mPrimaryDisplay, &pixelFormat, &dataspace);
+
+    IMapper::BufferDescriptorInfo info;
+    info.width = mDisplayWidth;
+    info.height = mDisplayHeight;
+    info.layerCount = 1;
+    info.format = pixelFormat;
+    info.usage = static_cast<uint64_t>(BufferUsage::CPU_READ_OFTEN | BufferUsage::GPU_TEXTURE);
+
+    uint32_t stride;
+    const native_handle_t* buffer = mGralloc->allocate(info, /*import*/ true, &stride);
+    mComposerClient->setReadbackBuffer(mPrimaryDisplay, buffer, -1);
+
+    render(layers);
+
+    int32_t fenceHandle;
+    mComposerClient->getReadbackBufferFence(mPrimaryDisplay, &fenceHandle);
+
+    // lock buffer
+    // Create Rect accessRegion to specify reading the entire buffer
+    IMapper::Rect accessRegion;
+    accessRegion.left = 0;
+    accessRegion.top = 0;
+    accessRegion.width = info.width;
+    accessRegion.height = info.height;
+
+    void* bufData = mGralloc->lock(buffer, info.usage, accessRegion, fenceHandle);
+    checkReadbackBuffer(info, stride, bufData, expectedColors);
+    int unlockFence = mGralloc->unlock(buffer);
+
+    if (unlockFence != -1) {
+        close(unlockFence);
+    }
+
+    mWriter->validateDisplay();
+    mWriter->presentDisplay();
+    execute();
+}
+
+}  // anonymous namespace
+}  // namespace vts
+}  // namespace V2_2
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.2/vts/functional/VtsHalGraphicsComposerV2_2TargetTest.cpp b/graphics/composer/2.2/vts/functional/VtsHalGraphicsComposerV2_2TargetTest.cpp
index 23bf558..7834b94 100644
--- a/graphics/composer/2.2/vts/functional/VtsHalGraphicsComposerV2_2TargetTest.cpp
+++ b/graphics/composer/2.2/vts/functional/VtsHalGraphicsComposerV2_2TargetTest.cpp
@@ -18,11 +18,11 @@
 
 #include <VtsHalHidlTargetTestBase.h>
 #include <android-base/logging.h>
-#include <android/hardware/graphics/mapper/2.1/IMapper.h>
+#include <android/hardware/graphics/mapper/2.0/IMapper.h>
 #include <composer-vts/2.1/GraphicsComposerCallback.h>
 #include <composer-vts/2.1/TestCommandReader.h>
 #include <composer-vts/2.2/ComposerVts.h>
-#include <mapper-vts/2.1/MapperVts.h>
+#include <mapper-vts/2.0/MapperVts.h>
 
 namespace android {
 namespace hardware {
@@ -32,17 +32,15 @@
 namespace vts {
 namespace {
 
-using android::hardware::graphics::common::V1_0::BufferUsage;
-using android::hardware::graphics::common::V1_0::ColorTransform;
-using android::hardware::graphics::common::V1_0::Transform;
-using android::hardware::graphics::common::V1_1::ColorMode;
-using android::hardware::graphics::common::V1_1::Dataspace;
-using android::hardware::graphics::common::V1_1::PixelFormat;
-using android::hardware::graphics::common::V1_1::RenderIntent;
-using android::hardware::graphics::composer::V2_2::IComposerClient;
-using android::hardware::graphics::mapper::V2_1::IMapper;
-using android::hardware::graphics::mapper::V2_1::vts::Gralloc;
-using GrallocError = android::hardware::graphics::mapper::V2_0::Error;
+using common::V1_0::BufferUsage;
+using common::V1_0::ColorTransform;
+using common::V1_0::Transform;
+using common::V1_1::ColorMode;
+using common::V1_1::Dataspace;
+using common::V1_1::PixelFormat;
+using common::V1_1::RenderIntent;
+using mapper::V2_0::IMapper;
+using mapper::V2_0::vts::Gralloc;
 
 // Test environment for graphics.composer
 class GraphicsComposerHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
@@ -65,9 +63,9 @@
    protected:
     void SetUp() override {
         ASSERT_NO_FATAL_FAILURE(
-            mComposer = std::make_unique<Composer_v2_2>(
+            mComposer = std::make_unique<Composer>(
                 GraphicsComposerHidlEnvironment::Instance()->getServiceName<IComposer>()));
-        ASSERT_NO_FATAL_FAILURE(mComposerClient = mComposer->createClient_v2_2());
+        ASSERT_NO_FATAL_FAILURE(mComposerClient = mComposer->createClient());
 
         mComposerCallback = new V2_1::vts::GraphicsComposerCallback;
         mComposerClient->registerCallback(mComposerCallback);
@@ -75,14 +73,29 @@
         // assume the first display is primary and is never removed
         mPrimaryDisplay = waitForFirstDisplay();
 
+        Config config = mComposerClient->getActiveConfig(mPrimaryDisplay);
+        mDisplayWidth = mComposerClient->getDisplayAttribute(mPrimaryDisplay, config,
+                                                             IComposerClient::Attribute::WIDTH);
+        mDisplayHeight = mComposerClient->getDisplayAttribute(mPrimaryDisplay, config,
+                                                              IComposerClient::Attribute::HEIGHT);
+
         // explicitly disable vsync
         mComposerClient->setVsyncEnabled(mPrimaryDisplay, false);
         mComposerCallback->setVsyncAllowed(false);
 
         mComposerClient->getRaw()->getReadbackBufferAttributes(
-            mPrimaryDisplay, [&](const auto& tmpError, const auto&, const auto&) {
+            mPrimaryDisplay,
+            [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
                 mHasReadbackBuffer = tmpError == Error::NONE;
+                if (mHasReadbackBuffer) {
+                    mReadbackPixelFormat = tmpPixelFormat;
+                    mReadbackDataspace = tmpDataspace;
+                    ASSERT_LT(static_cast<PixelFormat>(0), mReadbackPixelFormat);
+                    ASSERT_NE(Dataspace::UNKNOWN, mReadbackDataspace);
+                }
             });
+
+        mInvalidDisplayId = GetInvalidDisplayId();
     }
 
     void TearDown() override {
@@ -93,16 +106,39 @@
         }
     }
 
+    // returns an invalid display id (one that has not been registered to a
+    // display.  Currently assuming that a device will never have close to
+    // std::numeric_limit<uint64_t>::max() displays registered while running tests
+    Display GetInvalidDisplayId() {
+        std::vector<Display> validDisplays = mComposerCallback->getDisplays();
+        uint64_t id = std::numeric_limits<uint64_t>::max();
+        while (id > 0) {
+            if (std::find(validDisplays.begin(), validDisplays.end(), id) == validDisplays.end()) {
+                return id;
+            }
+            id--;
+        }
+
+        return 0;
+    }
+
     // use the slot count usually set by SF
     static constexpr uint32_t kBufferSlotCount = 64;
 
-    std::unique_ptr<Composer_v2_2> mComposer;
-    std::unique_ptr<ComposerClient_v2_2> mComposerClient;
+    std::unique_ptr<Composer> mComposer;
+    std::unique_ptr<ComposerClient> mComposerClient;
     sp<V2_1::vts::GraphicsComposerCallback> mComposerCallback;
     // the first display and is assumed never to be removed
     Display mPrimaryDisplay;
+    int32_t mDisplayWidth;
+    int32_t mDisplayHeight;
+
     bool mHasReadbackBuffer;
 
+    uint64_t mInvalidDisplayId;
+    PixelFormat mReadbackPixelFormat;
+    Dataspace mReadbackDataspace;
+
    private:
     Display waitForFirstDisplay() {
         while (true) {
@@ -125,27 +161,30 @@
 
         ASSERT_NO_FATAL_FAILURE(mGralloc = std::make_unique<Gralloc>());
 
-        mWriter = std::make_unique<V2_2::CommandWriterBase>(1024);
+        mWriter = std::make_unique<CommandWriterBase>(1024);
         mReader = std::make_unique<V2_1::vts::TestCommandReader>();
     }
 
-    void TearDown() override { ASSERT_NO_FATAL_FAILURE(GraphicsComposerHidlTest::TearDown()); }
+    void TearDown() override {
+        ASSERT_EQ(0, mReader->mErrors.size());
+        ASSERT_NO_FATAL_FAILURE(GraphicsComposerHidlTest::TearDown());
+    }
 
     const native_handle_t* allocate() {
         IMapper::BufferDescriptorInfo info{};
         info.width = 64;
         info.height = 64;
         info.layerCount = 1;
-        info.format = PixelFormat::RGBA_8888;
+        info.format = static_cast<common::V1_0::PixelFormat>(PixelFormat::RGBA_8888);
         info.usage =
             static_cast<uint64_t>(BufferUsage::CPU_WRITE_OFTEN | BufferUsage::CPU_READ_OFTEN);
 
         return mGralloc->allocate(info);
     }
 
-    void execute() { mComposerClient->execute_v2_2(mReader.get(), mWriter.get()); }
+    void execute() { mComposerClient->execute(mReader.get(), mWriter.get()); }
 
-    std::unique_ptr<V2_2::CommandWriterBase> mWriter;
+    std::unique_ptr<CommandWriterBase> mWriter;
     std::unique_ptr<V2_1::vts::TestCommandReader> mReader;
 
    private:
@@ -191,6 +230,16 @@
         {IComposerClient::PerFrameMetadataKey::MAX_FRAME_AVERAGE_LIGHT_LEVEL, 62.0});
     mWriter->setLayerPerFrameMetadata(hidlMetadata);
     execute();
+
+    if (mReader->mErrors.size() == 1 &&
+        static_cast<Error>(mReader->mErrors[0].second) == Error::UNSUPPORTED) {
+        mReader->mErrors.clear();
+        GTEST_SUCCEED() << "SetLayerPerFrameMetadata is not supported";
+        ASSERT_NO_FATAL_FAILURE(mComposerClient->destroyLayer(mPrimaryDisplay, layer));
+        return;
+    }
+
+    ASSERT_NO_FATAL_FAILURE(mComposerClient->destroyLayer(mPrimaryDisplay, layer));
 }
 
 /**
@@ -249,9 +298,35 @@
 }
 
 /**
+ * Test IComposerClient::getClientTargetSupport_2_2
+ *
+ * Test that IComposerClient::getClientTargetSupport_2_2 returns
+ * Error::BAD_DISPLAY when passed in an invalid display handle
+ */
+
+TEST_F(GraphicsComposerHidlTest, GetClientTargetSupport_2_2BadDisplay) {
+    std::vector<Config> configs = mComposerClient->getDisplayConfigs(mPrimaryDisplay);
+    for (auto config : configs) {
+        int32_t width = mComposerClient->getDisplayAttribute(mPrimaryDisplay, config,
+                                                             IComposerClient::Attribute::WIDTH);
+        int32_t height = mComposerClient->getDisplayAttribute(mPrimaryDisplay, config,
+                                                              IComposerClient::Attribute::HEIGHT);
+        ASSERT_LT(0, width);
+        ASSERT_LT(0, height);
+
+        mComposerClient->setActiveConfig(mPrimaryDisplay, config);
+
+        Error error = mComposerClient->getRaw()->getClientTargetSupport_2_2(
+            mInvalidDisplayId, width, height, PixelFormat::RGBA_8888, Dataspace::UNKNOWN);
+
+        EXPECT_EQ(Error::BAD_DISPLAY, error);
+    }
+}
+
+/**
  * Test IComposerClient::setPowerMode_2_2.
  */
-TEST_F(GraphicsComposerHidlTest, setPowerMode_2_2) {
+TEST_F(GraphicsComposerHidlTest, SetPowerMode_2_2) {
     std::vector<IComposerClient::PowerMode> modes;
     modes.push_back(IComposerClient::PowerMode::OFF);
     modes.push_back(IComposerClient::PowerMode::ON_SUSPEND);
@@ -262,25 +337,118 @@
     }
 }
 
-TEST_F(GraphicsComposerHidlTest, setReadbackBuffer) {
+/**
+ * Test IComposerClient::setPowerMode_2_2
+ *
+ * Test that IComposerClient::setPowerMode_2_2 succeeds for different varations
+ * of PowerMode
+ */
+TEST_F(GraphicsComposerHidlTest, SetPowerMode_2_2Variations) {
+    std::vector<IComposerClient::PowerMode> modes;
+
+    modes.push_back(IComposerClient::PowerMode::OFF);
+    modes.push_back(IComposerClient::PowerMode::OFF);
+
+    for (auto mode : modes) {
+        ASSERT_NO_FATAL_FAILURE(mComposerClient->setPowerMode_2_2(mPrimaryDisplay, mode));
+    }
+
+    modes.clear();
+
+    modes.push_back(IComposerClient::PowerMode::ON);
+    modes.push_back(IComposerClient::PowerMode::ON);
+
+    for (auto mode : modes) {
+        ASSERT_NO_FATAL_FAILURE(mComposerClient->setPowerMode_2_2(mPrimaryDisplay, mode));
+    }
+
+    modes.clear();
+
+    modes.push_back(IComposerClient::PowerMode::ON_SUSPEND);
+    modes.push_back(IComposerClient::PowerMode::ON_SUSPEND);
+
+    for (auto mode : modes) {
+        ASSERT_NO_FATAL_FAILURE(mComposerClient->setPowerMode_2_2(mPrimaryDisplay, mode));
+    }
+
+    if (mComposerClient->getDozeSupport(mPrimaryDisplay)) {
+        modes.clear();
+
+        modes.push_back(IComposerClient::PowerMode::DOZE);
+        modes.push_back(IComposerClient::PowerMode::DOZE);
+
+        for (auto mode : modes) {
+            ASSERT_NO_FATAL_FAILURE(mComposerClient->setPowerMode_2_2(mPrimaryDisplay, mode));
+        }
+
+        modes.clear();
+
+        modes.push_back(IComposerClient::PowerMode::DOZE_SUSPEND);
+        modes.push_back(IComposerClient::PowerMode::DOZE_SUSPEND);
+
+        for (auto mode : modes) {
+            ASSERT_NO_FATAL_FAILURE(mComposerClient->setPowerMode_2_2(mPrimaryDisplay, mode));
+        }
+    }
+}
+
+/**
+ * Test IComposerClient::setPowerMode_2_2
+ *
+ * Tests that IComposerClient::setPowerMode_2_2 returns BAD_DISPLAY when passed an
+ * invalid display handle
+ */
+TEST_F(GraphicsComposerHidlTest, SetPowerMode_2_2BadDisplay) {
+    Error error = mComposerClient->getRaw()->setPowerMode_2_2(mInvalidDisplayId,
+                                                              IComposerClient::PowerMode::ON);
+    ASSERT_EQ(Error::BAD_DISPLAY, error);
+}
+
+/**
+ * Test IComposerClient::setPowerMode_2_2
+ *
+ * Test that IComposerClient::setPowerMode_2_2 returns BAD_PARAMETER when passed
+ * an invalid PowerMode
+ */
+TEST_F(GraphicsComposerHidlTest, SetPowerMode_2_2BadParameter) {
+    Error error = mComposerClient->getRaw()->setPowerMode_2_2(
+        mPrimaryDisplay, static_cast<IComposerClient::PowerMode>(-1));
+    ASSERT_EQ(Error::BAD_PARAMETER, error);
+}
+
+/**
+ * Test IComposerClient::setPowerMode_2_2
+ *
+ * Test that IComposerClient::setPowerMode_2_2 returns UNSUPPORTED when passed
+ * DOZE or DOZE_SUPPORT on a device that does not support these modes
+ */
+TEST_F(GraphicsComposerHidlTest, SetPowerMode_2_2Unsupported) {
+    if (!mComposerClient->getDozeSupport(mPrimaryDisplay)) {
+        Error error = mComposerClient->getRaw()->setPowerMode_2_2(mPrimaryDisplay,
+                                                                  IComposerClient::PowerMode::DOZE);
+        EXPECT_EQ(Error::UNSUPPORTED, error);
+
+        error = mComposerClient->getRaw()->setPowerMode_2_2(
+            mPrimaryDisplay, IComposerClient::PowerMode::DOZE_SUSPEND);
+        EXPECT_EQ(Error::UNSUPPORTED, error);
+    }
+}
+
+/**
+ * Test IComposerClient::setReadbackBuffer
+ *
+ * Test IComposerClient::setReadbackBuffer
+ */
+TEST_F(GraphicsComposerHidlTest, SetReadbackBuffer) {
     if (!mHasReadbackBuffer) {
         return;
     }
 
-    PixelFormat pixelFormat;
-    Dataspace dataspace;
-    mComposerClient->getReadbackBufferAttributes(mPrimaryDisplay, &pixelFormat, &dataspace);
-    ASSERT_LT(static_cast<PixelFormat>(0), pixelFormat);
-    ASSERT_NE(Dataspace::UNKNOWN, dataspace);
-
     IMapper::BufferDescriptorInfo info{};
-    Config config = mComposerClient->getActiveConfig(mPrimaryDisplay);
-    info.width = mComposerClient->getDisplayAttribute(mPrimaryDisplay, config,
-                                                      IComposerClient::Attribute::WIDTH);
-    info.height = mComposerClient->getDisplayAttribute(mPrimaryDisplay, config,
-                                                       IComposerClient::Attribute::HEIGHT);
+    info.width = mDisplayWidth;
+    info.height = mDisplayHeight;
     info.layerCount = 1;
-    info.format = pixelFormat;
+    info.format = static_cast<common::V1_0::PixelFormat>(mReadbackPixelFormat);
     // BufferUsage::COMPOSER_OUTPUT is missing
     info.usage = static_cast<uint64_t>(BufferUsage::COMPOSER_OVERLAY | BufferUsage::CPU_READ_OFTEN);
 
@@ -292,7 +460,49 @@
     mComposerClient->setReadbackBuffer(mPrimaryDisplay, buffer, -1);
 }
 
-TEST_F(GraphicsComposerHidlTest, getReadbackBufferFenceInactive) {
+/**
+ * Test IComposerClient::setReadbackBuffer
+ *
+ * Test that IComposerClient::setReadbackBuffer returns an Error::BAD_DISPLAY
+ * when passed an invalid display handle
+ */
+TEST_F(GraphicsComposerHidlTest, SetReadbackBufferBadDisplay) {
+    if (!mHasReadbackBuffer) {
+        return;
+    }
+
+    IMapper::BufferDescriptorInfo info{};
+    info.width = mDisplayWidth;
+    info.height = mDisplayHeight;
+    info.layerCount = 1;
+    info.format = static_cast<common::V1_0::PixelFormat>(mReadbackPixelFormat);
+    info.usage = static_cast<uint64_t>(BufferUsage::COMPOSER_OVERLAY | BufferUsage::CPU_READ_OFTEN);
+
+    std::unique_ptr<Gralloc> gralloc;
+    const native_handle_t* buffer;
+    ASSERT_NO_FATAL_FAILURE(gralloc = std::make_unique<Gralloc>());
+    ASSERT_NO_FATAL_FAILURE(buffer = gralloc->allocate(info));
+
+    Error error = mComposerClient->getRaw()->setReadbackBuffer(mInvalidDisplayId, buffer, nullptr);
+    ASSERT_EQ(Error::BAD_DISPLAY, error);
+}
+
+/**
+ * Test IComposerClient::setReadbackBuffer
+ *
+ * Test that IComposerClient::setReadbackBuffer returns Error::BAD_PARAMETER
+ * when passed an invalid buffer handle
+ */
+TEST_F(GraphicsComposerHidlTest, SetReadbackBufferBadParameter) {
+    if (!mHasReadbackBuffer) {
+        return;
+    }
+
+    Error error = mComposerClient->getRaw()->setReadbackBuffer(mPrimaryDisplay, nullptr, nullptr);
+    ASSERT_EQ(Error::BAD_PARAMETER, error);
+}
+
+TEST_F(GraphicsComposerHidlTest, GetReadbackBufferFenceInactive) {
     if (!mHasReadbackBuffer) {
         return;
     }
@@ -313,14 +523,38 @@
 
     mWriter->selectDisplay(mPrimaryDisplay);
     mWriter->selectLayer(layer);
+    mWriter->setLayerCompositionType(IComposerClient::Composition::SOLID_COLOR);
     mWriter->setLayerFloatColor(IComposerClient::FloatColor{1.0, 1.0, 1.0, 1.0});
     mWriter->setLayerFloatColor(IComposerClient::FloatColor{0.0, 0.0, 0.0, 0.0});
+    execute();
+
+    if (mReader->mErrors.size() == 2 &&
+        static_cast<Error>(mReader->mErrors[0].second) == Error::UNSUPPORTED &&
+        static_cast<Error>(mReader->mErrors[1].second) == Error::UNSUPPORTED) {
+        mReader->mErrors.clear();
+        GTEST_SUCCEED() << "SetLayerFloatColor is not supported";
+        return;
+    }
+
+    // ensure setting float color on layer with composition type that is not
+    // SOLID_COLOR does not fail
+    V2_1::Layer clientLayer;
+    ASSERT_NO_FATAL_FAILURE(clientLayer =
+                                mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
+    mWriter->selectDisplay(mPrimaryDisplay);
+    mWriter->selectLayer(clientLayer);
+    mWriter->setLayerCompositionType(IComposerClient::Composition::CLIENT);
+    mWriter->setLayerFloatColor(IComposerClient::FloatColor{1.0, 1.0, 1.0, 1.0});
+    execute();
+
+    // At this point we know that this function is supported so there should be
+    // no errors (checked upon TearDown)
 }
 
 /**
  * Test IComposerClient::getDataspaceSaturationMatrix.
  */
-TEST_F(GraphicsComposerHidlTest, getDataspaceSaturationMatrix) {
+TEST_F(GraphicsComposerHidlTest, GetDataspaceSaturationMatrix) {
     auto matrix = mComposerClient->getDataspaceSaturationMatrix(Dataspace::SRGB_LINEAR);
     // the last row is known
     ASSERT_EQ(0.0f, matrix[12]);
@@ -329,6 +563,19 @@
     ASSERT_EQ(1.0f, matrix[15]);
 }
 
+/*
+ * Test IComposerClient::getDataspaceSaturationMatrix
+ *
+ * Test that IComposerClient::getDataspaceSaturationMatrix returns
+ * Error::BAD_PARAMETER when passed a dataspace other than
+ * Dataspace::SRGB_LINEAR
+ */
+TEST_F(GraphicsComposerHidlTest, GetDataspaceSaturationMatrixBadParameter) {
+    mComposerClient->getRaw()->getDataspaceSaturationMatrix(
+        Dataspace::UNKNOWN,
+        [&](const auto& tmpError, const auto&) { ASSERT_EQ(Error::BAD_PARAMETER, tmpError); });
+}
+
 /**
  * Test IComposerClient::getColorMode_2_2.
  */
@@ -339,10 +586,22 @@
     EXPECT_NE(modes.cend(), nativeMode);
 }
 
-/**
- * Test IComposerClient::getRenderIntent.
+/*
+ * Test IComposerClient::getColorMode_2_2
+ *
+ * Test that IComposerClient::getColorMode returns Error::BAD_DISPLAY when
+ * passed an invalid display handle
  */
-TEST_F(GraphicsComposerHidlTest, GetRenderIntent) {
+TEST_F(GraphicsComposerHidlTest, GetColorMode_2_2BadDisplay) {
+    mComposerClient->getRaw()->getColorModes_2_2(
+        mInvalidDisplayId,
+        [&](const auto& tmpError, const auto&) { ASSERT_EQ(Error::BAD_DISPLAY, tmpError); });
+}
+
+/**
+ * Test IComposerClient::getRenderIntents.
+ */
+TEST_F(GraphicsComposerHidlTest, GetRenderIntents) {
     std::vector<ColorMode> modes = mComposerClient->getColorModes(mPrimaryDisplay);
     for (auto mode : modes) {
         std::vector<RenderIntent> intents =
@@ -366,6 +625,33 @@
     }
 }
 
+/*
+ * Test IComposerClient::getRenderIntents
+ *
+ * Test that IComposerClient::getRenderIntent returns Error::BAD_DISPLAY when
+ * passed an invalid display handle
+ */
+TEST_F(GraphicsComposerHidlTest, GetRenderIntentsBadDisplay) {
+    std::vector<ColorMode> modes = mComposerClient->getColorModes(mPrimaryDisplay);
+    for (auto mode : modes) {
+        mComposerClient->getRaw()->getRenderIntents(
+            mInvalidDisplayId, mode,
+            [&](const auto& tmpError, const auto&) { EXPECT_EQ(Error::BAD_DISPLAY, tmpError); });
+    }
+}
+
+/*
+ * Test IComposerClient::getRenderIntents
+ *
+ * Test that IComposerClient::getRenderIntents returns Error::BAD_PARAMETER when
+ * pased either an invalid Color mode or an invalid Render Intent
+ */
+TEST_F(GraphicsComposerHidlTest, GetRenderIntentsBadParameter) {
+    mComposerClient->getRaw()->getRenderIntents(
+        mPrimaryDisplay, static_cast<ColorMode>(-1),
+        [&](const auto& tmpError, const auto&) { EXPECT_EQ(Error::BAD_PARAMETER, tmpError); });
+}
+
 /**
  * Test IComposerClient::setColorMode_2_2.
  */
@@ -378,6 +664,37 @@
             mComposerClient->setColorMode(mPrimaryDisplay, mode, intent);
         }
     }
+
+    mComposerClient->setColorMode(mPrimaryDisplay, ColorMode::NATIVE, RenderIntent::COLORIMETRIC);
+}
+
+/*
+ * Test IComposerClient::setColorMode_2_2
+ *
+ * Test that IComposerClient::setColorMode_2_2 returns an Error::BAD_DISPLAY
+ * when passed an invalid display handle
+ */
+TEST_F(GraphicsComposerHidlTest, SetColorMode_2_2BadDisplay) {
+    Error error = mComposerClient->getRaw()->setColorMode_2_2(mInvalidDisplayId, ColorMode::NATIVE,
+                                                              RenderIntent::COLORIMETRIC);
+
+    ASSERT_EQ(Error::BAD_DISPLAY, error);
+}
+
+/*
+ * Test IComposerClient::setColorMode_2_2
+ *
+ * Test that IComposerClient::setColorMode_2_2 returns Error::BAD_PARAMETER when
+ * passed an invalid Color mode or an invalid render intent
+ */
+TEST_F(GraphicsComposerHidlTest, SetColorMode_2_2BadParameter) {
+    Error colorModeError = mComposerClient->getRaw()->setColorMode_2_2(
+        mPrimaryDisplay, static_cast<ColorMode>(-1), RenderIntent::COLORIMETRIC);
+    EXPECT_EQ(Error::BAD_PARAMETER, colorModeError);
+
+    Error renderIntentError = mComposerClient->getRaw()->setColorMode_2_2(
+        mPrimaryDisplay, ColorMode::NATIVE, static_cast<RenderIntent>(-1));
+    EXPECT_EQ(Error::BAD_PARAMETER, renderIntentError);
 }
 
 }  // namespace
diff --git a/graphics/composer/2.3/Android.bp b/graphics/composer/2.3/Android.bp
new file mode 100644
index 0000000..23061dd
--- /dev/null
+++ b/graphics/composer/2.3/Android.bp
@@ -0,0 +1,21 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.graphics.composer@2.3",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "IComposer.hal",
+        "IComposerClient.hal",
+    ],
+    interfaces: [
+        "android.hardware.graphics.common@1.0",
+        "android.hardware.graphics.composer@2.1",
+        "android.hardware.graphics.composer@2.2",
+        "android.hidl.base@1.0",
+    ],
+    gen_java: false,
+}
+
diff --git a/graphics/composer/2.3/IComposer.hal b/graphics/composer/2.3/IComposer.hal
new file mode 100644
index 0000000..90b2427
--- /dev/null
+++ b/graphics/composer/2.3/IComposer.hal
@@ -0,0 +1,37 @@
+/*
+ * 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.
+ */
+
+package android.hardware.graphics.composer@2.3;
+
+import IComposerClient;
+
+import @2.1::Error;
+import @2.2::IComposer;
+
+interface IComposer extends @2.2::IComposer {
+
+    /**
+     * Creates a v2.3 client of the composer. Supersedes @2.1::createClient.
+     *
+     * @return error is NONE upon success. Otherwise,
+     *         NO_RESOURCES when the client could not be created.
+     * @return client is the newly created client.
+     */
+    @entry
+    @callflow(next="*")
+    createClient_2_3() generates (Error error, IComposerClient client);
+
+};
diff --git a/graphics/composer/2.3/IComposerClient.hal b/graphics/composer/2.3/IComposerClient.hal
new file mode 100644
index 0000000..77dd3ee
--- /dev/null
+++ b/graphics/composer/2.3/IComposerClient.hal
@@ -0,0 +1,45 @@
+/*
+ * 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.
+ */
+
+package android.hardware.graphics.composer@2.3;
+
+import @2.2::IComposerClient;
+import @2.1::Display;
+import @2.1::Error;
+
+interface IComposerClient extends @2.2::IComposerClient {
+
+    /**
+     * Returns the port and data that describe a physical display. The port is
+     * a unique number that identifies a physical connector (e.g. eDP, HDMI)
+     * for display output. The data blob is parsed to determine its format,
+     * typically EDID 1.3 as specified in VESA E-EDID Standard Release A
+     * Revision 1.
+     *
+     * @param display is the display to query.
+     * @return error is NONE upon success. Otherwise,
+     *         BAD_DISPLAY when an invalid display handle was passed in.
+     *         UNSUPPORTED when identification data is unavailable.
+     * @return port is the connector to which the display is connected.
+     * @return data is the EDID 1.3 blob identifying the display.
+     */
+    @callflow(next="*")
+    getDisplayIdentificationData(Display display)
+               generates (Error error,
+                          uint8_t port,
+                          vec<uint8_t> data);
+
+};
diff --git a/graphics/composer/2.3/default/Android.bp b/graphics/composer/2.3/default/Android.bp
new file mode 100644
index 0000000..ad49ec3
--- /dev/null
+++ b/graphics/composer/2.3/default/Android.bp
@@ -0,0 +1,45 @@
+//
+// 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.
+//
+
+cc_binary {
+    name: "android.hardware.graphics.composer@2.3-service",
+    defaults: ["hidl_defaults"],
+    vendor: true,
+    relative_install_path: "hw",
+    srcs: ["service.cpp"],
+    init_rc: ["android.hardware.graphics.composer@2.3-service.rc"],
+    header_libs: [
+        "android.hardware.graphics.composer@2.3-passthrough",
+    ],
+    shared_libs: [
+        "android.hardware.graphics.composer@2.1",
+        "android.hardware.graphics.composer@2.2",
+        "android.hardware.graphics.composer@2.3",
+        "android.hardware.graphics.mapper@2.0",
+        "libbase",
+        "libbinder",
+        "libcutils",
+        "libfmq",
+        "libhardware",
+        "libhidlbase",
+        "libhidltransport",
+        "libhwc2on1adapter",
+        "libhwc2onfbadapter",
+        "liblog",
+        "libsync",
+        "libutils",
+    ],
+}
diff --git a/graphics/composer/2.3/default/OWNERS b/graphics/composer/2.3/default/OWNERS
new file mode 100644
index 0000000..3aa5fa1
--- /dev/null
+++ b/graphics/composer/2.3/default/OWNERS
@@ -0,0 +1,4 @@
+# Graphics team
+jessehall@google.com
+olv@google.com
+stoza@google.com
diff --git a/graphics/composer/2.3/default/android.hardware.graphics.composer@2.3-service.rc b/graphics/composer/2.3/default/android.hardware.graphics.composer@2.3-service.rc
new file mode 100644
index 0000000..08e32d8
--- /dev/null
+++ b/graphics/composer/2.3/default/android.hardware.graphics.composer@2.3-service.rc
@@ -0,0 +1,6 @@
+service vendor.hwcomposer-2-3 /vendor/bin/hw/android.hardware.graphics.composer@2.3-service
+    class hal animation
+    user system
+    group graphics drmrpc
+    capabilities SYS_NICE
+    onrestart restart surfaceflinger
diff --git a/graphics/composer/2.3/default/service.cpp b/graphics/composer/2.3/default/service.cpp
new file mode 100644
index 0000000..347d8be
--- /dev/null
+++ b/graphics/composer/2.3/default/service.cpp
@@ -0,0 +1,55 @@
+/*
+ * 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.
+ */
+
+#include <sched.h>
+
+#include <android/hardware/graphics/composer/2.3/IComposer.h>
+#include <binder/ProcessState.h>
+#include <composer-passthrough/2.3/HwcLoader.h>
+#include <hidl/HidlTransportSupport.h>
+
+using android::hardware::graphics::composer::V2_3::IComposer;
+using android::hardware::graphics::composer::V2_3::passthrough::HwcLoader;
+
+int main() {
+    // the conventional HAL might start binder services
+    android::ProcessState::initWithDriver("/dev/vndbinder");
+    android::ProcessState::self()->setThreadPoolMaxThreadCount(4);
+    android::ProcessState::self()->startThreadPool();
+
+    // same as SF main thread
+    struct sched_param param = {0};
+    param.sched_priority = 2;
+    if (sched_setscheduler(0, SCHED_FIFO | SCHED_RESET_ON_FORK, &param) != 0) {
+        ALOGE("Couldn't set SCHED_FIFO: %d", errno);
+    }
+
+    android::hardware::configureRpcThreadpool(4, true /* will join */);
+
+    android::sp<IComposer> composer = HwcLoader::load();
+    if (composer == nullptr) {
+        return 1;
+    }
+    if (composer->registerAsService() != android::NO_ERROR) {
+        ALOGE("failed to register service");
+        return 1;
+    }
+
+    android::hardware::joinRpcThreadpool();
+
+    ALOGE("service is terminating");
+    return 1;
+}
diff --git a/graphics/composer/2.3/utils/OWNERS b/graphics/composer/2.3/utils/OWNERS
new file mode 100644
index 0000000..234bc75
--- /dev/null
+++ b/graphics/composer/2.3/utils/OWNERS
@@ -0,0 +1,7 @@
+# Graphics team
+olv@google.com
+stoza@google.com
+
+# VTS team
+yim@google.com
+zhuoyao@google.com
diff --git a/graphics/composer/2.3/utils/hal/Android.bp b/graphics/composer/2.3/utils/hal/Android.bp
new file mode 100644
index 0000000..aa46df1
--- /dev/null
+++ b/graphics/composer/2.3/utils/hal/Android.bp
@@ -0,0 +1,34 @@
+//
+// 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.
+//
+
+cc_library_headers {
+    name: "android.hardware.graphics.composer@2.3-hal",
+    defaults: ["hidl_defaults"],
+    vendor_available: true,
+    shared_libs: [
+        "android.hardware.graphics.composer@2.3",
+    ],
+    export_shared_lib_headers: [
+        "android.hardware.graphics.composer@2.3",
+    ],
+    header_libs: [
+        "android.hardware.graphics.composer@2.2-hal",
+    ],
+    export_header_lib_headers: [
+        "android.hardware.graphics.composer@2.2-hal",
+    ],
+    export_include_dirs: ["include"],
+}
diff --git a/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/Composer.h b/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/Composer.h
new file mode 100644
index 0000000..8e11a5a
--- /dev/null
+++ b/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/Composer.h
@@ -0,0 +1,89 @@
+/*
+ * 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
+
+#ifndef LOG_TAG
+#warning "Composer.h included without LOG_TAG"
+#endif
+
+#include <android/hardware/graphics/composer/2.3/IComposer.h>
+#include <composer-hal/2.2/Composer.h>
+#include <composer-hal/2.3/ComposerClient.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_3 {
+namespace hal {
+
+namespace detail {
+
+// ComposerImpl implements V2_*::IComposer on top of V2_*::ComposerHal
+template <typename Interface, typename Hal>
+class ComposerImpl : public V2_2::hal::detail::ComposerImpl<Interface, Hal> {
+   public:
+    static std::unique_ptr<ComposerImpl> create(std::unique_ptr<Hal> hal) {
+        return std::make_unique<ComposerImpl>(std::move(hal));
+    }
+
+    explicit ComposerImpl(std::unique_ptr<Hal> hal) : BaseType2_2(std::move(hal)) {}
+
+    // IComposer 2.3 interface
+
+    Return<void> createClient_2_3(IComposer::createClient_2_3_cb hidl_cb) override {
+        std::unique_lock<std::mutex> lock(mClientMutex);
+        if (!waitForClientDestroyedLocked(lock)) {
+            hidl_cb(Error::NO_RESOURCES, nullptr);
+            return Void();
+        }
+
+        sp<ComposerClient> client = ComposerClient::create(mHal.get()).release();
+        if (!client) {
+            hidl_cb(Error::NO_RESOURCES, nullptr);
+            return Void();
+        }
+
+        auto clientDestroyed = [this]() { onClientDestroyed(); };
+        client->setOnClientDestroyed(clientDestroyed);
+
+        mClient = client;
+        hidl_cb(Error::NONE, client);
+        return Void();
+    }
+
+   private:
+    using BaseType2_2 = V2_2::hal::detail::ComposerImpl<Interface, Hal>;
+    using BaseType2_1 = V2_1::hal::detail::ComposerImpl<Interface, Hal>;
+
+    using BaseType2_1::mClient;
+    using BaseType2_1::mClientMutex;
+    using BaseType2_1::mHal;
+    using BaseType2_1::onClientDestroyed;
+    using BaseType2_1::waitForClientDestroyedLocked;
+};
+
+}  // namespace detail
+
+using Composer = detail::ComposerImpl<IComposer, ComposerHal>;
+
+}  // namespace hal
+}  // namespace V2_3
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerClient.h b/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerClient.h
new file mode 100644
index 0000000..e717d84
--- /dev/null
+++ b/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerClient.h
@@ -0,0 +1,74 @@
+/*
+ * 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
+
+#ifndef LOG_TAG
+#warning "ComposerClient.h included without LOG_TAG"
+#endif
+
+#include <android/hardware/graphics/composer/2.3/IComposerClient.h>
+#include <composer-hal/2.3/ComposerClient.h>
+#include <composer-hal/2.3/ComposerHal.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_3 {
+namespace hal {
+
+namespace detail {
+
+// ComposerClientImpl implements V2_*::IComposerClient on top of V2_*::ComposerHal
+template <typename Interface, typename Hal>
+class ComposerClientImpl : public V2_2::hal::detail::ComposerClientImpl<Interface, Hal> {
+   public:
+    static std::unique_ptr<ComposerClientImpl> create(Hal* hal) {
+        auto client = std::make_unique<ComposerClientImpl>(hal);
+        return client->init() ? std::move(client) : nullptr;
+    }
+
+    ComposerClientImpl(Hal* hal) : BaseType2_2(hal) {}
+
+    // IComposerClient 2.3 interface
+
+    Return<void> getDisplayIdentificationData(
+        Display display, IComposerClient::getDisplayIdentificationData_cb hidl_cb) override {
+        uint8_t port = 0;
+        std::vector<uint8_t> data;
+        Error error = mHal->getDisplayIdentificationData(display, &port, &data);
+        hidl_cb(error, port, data);
+        return Void();
+    }
+
+   private:
+    using BaseType2_2 = V2_2::hal::detail::ComposerClientImpl<Interface, Hal>;
+    using BaseType2_1 = V2_1::hal::detail::ComposerClientImpl<Interface, Hal>;
+
+    using BaseType2_1::mHal;
+};
+
+}  // namespace detail
+
+using ComposerClient = detail::ComposerClientImpl<IComposerClient, ComposerHal>;
+
+}  // namespace hal
+}  // namespace V2_3
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerHal.h b/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerHal.h
new file mode 100644
index 0000000..37ea0a3
--- /dev/null
+++ b/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerHal.h
@@ -0,0 +1,42 @@
+/*
+ * 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 <composer-hal/2.2/ComposerHal.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_3 {
+namespace hal {
+
+using V2_1::Display;
+using V2_1::Error;
+
+class ComposerHal : public V2_2::hal::ComposerHal {
+   public:
+    virtual Error getDisplayIdentificationData(Display display, uint8_t* outPort,
+                                               std::vector<uint8_t>* outData) = 0;
+};
+
+}  // namespace hal
+}  // namespace V2_3
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.3/utils/passthrough/Android.bp b/graphics/composer/2.3/utils/passthrough/Android.bp
new file mode 100644
index 0000000..3ae6b16
--- /dev/null
+++ b/graphics/composer/2.3/utils/passthrough/Android.bp
@@ -0,0 +1,30 @@
+//
+// 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.
+//
+
+cc_library_headers {
+    name: "android.hardware.graphics.composer@2.3-passthrough",
+    defaults: ["hidl_defaults"],
+    vendor: true,
+    header_libs: [
+        "android.hardware.graphics.composer@2.2-passthrough",
+        "android.hardware.graphics.composer@2.3-hal",
+    ],
+    export_header_lib_headers: [
+        "android.hardware.graphics.composer@2.2-passthrough",
+        "android.hardware.graphics.composer@2.3-hal",
+    ],
+    export_include_dirs: ["include"],
+}
diff --git a/graphics/composer/2.3/utils/passthrough/include/composer-passthrough/2.3/HwcHal.h b/graphics/composer/2.3/utils/passthrough/include/composer-passthrough/2.3/HwcHal.h
new file mode 100644
index 0000000..53f2d1b
--- /dev/null
+++ b/graphics/composer/2.3/utils/passthrough/include/composer-passthrough/2.3/HwcHal.h
@@ -0,0 +1,99 @@
+/*
+ * 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
+
+#ifndef LOG_TAG
+#warning "HwcHal.h included without LOG_TAG"
+#endif
+
+#include <type_traits>
+
+#include <composer-hal/2.3/ComposerHal.h>
+#include <composer-passthrough/2.2/HwcHal.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_3 {
+namespace passthrough {
+
+namespace detail {
+
+using V2_1::Display;
+using V2_1::Error;
+
+// HwcHalImpl implements V2_*::hal::ComposerHal on top of hwcomposer2
+template <typename Hal>
+class HwcHalImpl : public V2_2::passthrough::detail::HwcHalImpl<Hal> {
+   public:
+    Error getDisplayIdentificationData(Display display, uint8_t* outPort,
+                                       std::vector<uint8_t>* outData) override {
+        if (!mDispatch.getDisplayIdentificationData) {
+            return Error::UNSUPPORTED;
+        }
+
+        uint32_t size = 0;
+        int32_t error =
+            mDispatch.getDisplayIdentificationData(mDevice, display, outPort, &size, nullptr);
+        if (error != HWC2_ERROR_NONE) {
+            return static_cast<Error>(error);
+        }
+
+        std::vector<uint8_t> data(size);
+        error =
+            mDispatch.getDisplayIdentificationData(mDevice, display, outPort, &size, data.data());
+        if (error != HWC2_ERROR_NONE) {
+            return static_cast<Error>(error);
+        }
+
+        data.resize(size);
+        *outData = std::move(data);
+        return Error::NONE;
+    }
+
+   protected:
+    bool initDispatch() override {
+        if (!BaseType2_2::initDispatch()) {
+            return false;
+        }
+
+        this->initOptionalDispatch(HWC2_FUNCTION_GET_DISPLAY_IDENTIFICATION_DATA,
+                                   &mDispatch.getDisplayIdentificationData);
+        return true;
+    }
+
+   private:
+    struct {
+        HWC2_PFN_GET_DISPLAY_IDENTIFICATION_DATA getDisplayIdentificationData;
+    } mDispatch = {};
+
+    using BaseType2_2 = V2_2::passthrough::detail::HwcHalImpl<Hal>;
+    using BaseType2_1 = V2_1::passthrough::detail::HwcHalImpl<Hal>;
+    using BaseType2_1::mDevice;
+};
+
+}  // namespace detail
+
+using HwcHal = detail::HwcHalImpl<hal::ComposerHal>;
+
+}  // namespace passthrough
+}  // namespace V2_3
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.3/utils/passthrough/include/composer-passthrough/2.3/HwcLoader.h b/graphics/composer/2.3/utils/passthrough/include/composer-passthrough/2.3/HwcLoader.h
new file mode 100644
index 0000000..afef475
--- /dev/null
+++ b/graphics/composer/2.3/utils/passthrough/include/composer-passthrough/2.3/HwcLoader.h
@@ -0,0 +1,79 @@
+/*
+ * 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
+
+#ifndef LOG_TAG
+#warning "HwcLoader.h included without LOG_TAG"
+#endif
+
+#include <composer-hal/2.3/Composer.h>
+#include <composer-hal/2.3/ComposerHal.h>
+#include <composer-passthrough/2.2/HwcLoader.h>
+#include <composer-passthrough/2.3/HwcHal.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_3 {
+namespace passthrough {
+
+class HwcLoader : public V2_2::passthrough::HwcLoader {
+   public:
+    static IComposer* load() {
+        const hw_module_t* module = loadModule();
+        if (!module) {
+            return nullptr;
+        }
+
+        auto hal = createHalWithAdapter(module);
+        if (!hal) {
+            return nullptr;
+        }
+
+        return createComposer(std::move(hal)).release();
+    }
+
+    // create a ComposerHal instance
+    static std::unique_ptr<hal::ComposerHal> createHal(const hw_module_t* module) {
+        auto hal = std::make_unique<HwcHal>();
+        return hal->initWithModule(module) ? std::move(hal) : nullptr;
+    }
+
+    // create a ComposerHal instance, insert an adapter if necessary
+    static std::unique_ptr<hal::ComposerHal> createHalWithAdapter(const hw_module_t* module) {
+        bool adapted;
+        hwc2_device_t* device = openDeviceWithAdapter(module, &adapted);
+        if (!device) {
+            return nullptr;
+        }
+        auto hal = std::make_unique<HwcHal>();
+        return hal->initWithDevice(std::move(device), !adapted) ? std::move(hal) : nullptr;
+    }
+
+    // create an IComposer instance
+    static std::unique_ptr<IComposer> createComposer(std::unique_ptr<hal::ComposerHal> hal) {
+        return hal::Composer::create(std::move(hal));
+    }
+};
+
+}  // namespace passthrough
+}  // namespace V2_3
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.3/utils/vts/Android.bp b/graphics/composer/2.3/utils/vts/Android.bp
new file mode 100644
index 0000000..0553258
--- /dev/null
+++ b/graphics/composer/2.3/utils/vts/Android.bp
@@ -0,0 +1,41 @@
+//
+// 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.
+//
+
+cc_library_static {
+    name: "android.hardware.graphics.composer@2.3-vts",
+    defaults: ["hidl_defaults"],
+    srcs: [
+        "ComposerVts.cpp",
+    ],
+    static_libs: [
+        "VtsHalHidlTargetTestBase",
+        "android.hardware.graphics.composer@2.1",
+        "android.hardware.graphics.composer@2.1-vts",
+        "android.hardware.graphics.composer@2.2",
+        "android.hardware.graphics.composer@2.2-vts",
+        "android.hardware.graphics.composer@2.3",
+    ],
+    header_libs: [
+        "android.hardware.graphics.composer@2.1-command-buffer",
+        "android.hardware.graphics.composer@2.2-command-buffer",
+    ],
+    cflags: [
+        "-O0",
+        "-g",
+        "-DLOG_TAG=\"ComposerVts\"",
+    ],
+    export_include_dirs: ["include"],
+}
diff --git a/graphics/composer/2.3/utils/vts/ComposerVts.cpp b/graphics/composer/2.3/utils/vts/ComposerVts.cpp
new file mode 100644
index 0000000..f1d3a50
--- /dev/null
+++ b/graphics/composer/2.3/utils/vts/ComposerVts.cpp
@@ -0,0 +1,72 @@
+/*
+ * 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 <composer-vts/2.3/ComposerVts.h>
+
+#include <VtsHalHidlTargetTestBase.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_3 {
+namespace vts {
+
+using V2_1::Error;
+
+Composer::Composer() : Composer(::testing::VtsHalHidlTargetTestBase::getService<IComposer>()) {}
+
+Composer::Composer(const std::string& name)
+    : Composer(::testing::VtsHalHidlTargetTestBase::getService<IComposer>(name)) {}
+
+Composer::Composer(const sp<IComposer>& composer)
+    : V2_2::vts::Composer(composer), mComposer(composer) {}
+
+std::unique_ptr<ComposerClient> Composer::createClient() {
+    std::unique_ptr<ComposerClient> client;
+    mComposer->createClient_2_3([&client](const auto& tmpError, const auto& tmpClient) {
+        ASSERT_EQ(Error::NONE, tmpError) << "failed to create client";
+        client = std::make_unique<ComposerClient>(tmpClient);
+    });
+
+    return client;
+}
+
+bool ComposerClient::getDisplayIdentificationData(Display display, uint8_t* outPort,
+                                                  std::vector<uint8_t>* outData) {
+    bool supported = true;
+    mClient->getDisplayIdentificationData(
+        display, [&](const auto& tmpError, const auto& tmpPort, const auto& tmpData) {
+            if (tmpError == Error::UNSUPPORTED) {
+                supported = false;
+                return;
+            }
+            ASSERT_EQ(Error::NONE, tmpError) << "failed to get display identification data";
+
+            *outPort = tmpPort;
+            *outData = tmpData;
+            ASSERT_FALSE(outData->empty()) << "data is empty";
+        });
+
+    return supported;
+}
+
+}  // namespace vts
+}  // namespace V2_3
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.3/utils/vts/include/composer-vts/2.3/ComposerVts.h b/graphics/composer/2.3/utils/vts/include/composer-vts/2.3/ComposerVts.h
new file mode 100644
index 0000000..103b85a
--- /dev/null
+++ b/graphics/composer/2.3/utils/vts/include/composer-vts/2.3/ComposerVts.h
@@ -0,0 +1,74 @@
+/*
+ * 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.
+ */
+
+#pragma once
+
+#include <memory>
+#include <vector>
+
+#include <VtsHalHidlTargetTestBase.h>
+#include <android/hardware/graphics/composer/2.3/IComposer.h>
+#include <android/hardware/graphics/composer/2.3/IComposerClient.h>
+#include <composer-vts/2.2/ComposerVts.h>
+#include <utils/StrongPointer.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_3 {
+namespace vts {
+
+using V2_1::Display;
+using V2_3::IComposer;
+using V2_3::IComposerClient;
+
+class ComposerClient;
+
+// A wrapper to IComposer.
+class Composer : public V2_2::vts::Composer {
+   public:
+    Composer();
+    explicit Composer(const std::string& name);
+
+    std::unique_ptr<ComposerClient> createClient();
+
+   protected:
+    explicit Composer(const sp<IComposer>& composer);
+
+   private:
+    const sp<IComposer> mComposer;
+};
+
+// A wrapper to IComposerClient.
+class ComposerClient : public V2_2::vts::ComposerClient {
+   public:
+    explicit ComposerClient(const sp<IComposerClient>& client)
+        : V2_2::vts::ComposerClient(client), mClient(client) {}
+
+    bool getDisplayIdentificationData(Display display, uint8_t* outPort,
+                                      std::vector<uint8_t>* outData);
+
+   private:
+    const sp<IComposerClient> mClient;
+};
+
+}  // namespace vts
+}  // namespace V2_3
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.3/vts/functional/Android.bp b/graphics/composer/2.3/vts/functional/Android.bp
new file mode 100644
index 0000000..df696c9
--- /dev/null
+++ b/graphics/composer/2.3/vts/functional/Android.bp
@@ -0,0 +1,44 @@
+//
+// 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.
+//
+
+cc_test {
+    name: "VtsHalGraphicsComposerV2_3TargetTest",
+    defaults: ["VtsHalTargetTestDefaults"],
+    srcs: ["VtsHalGraphicsComposerV2_3TargetTest.cpp"],
+
+    // TODO(b/64437680): Assume these libs are always available on the device.
+    shared_libs: [
+        "libfmq",
+        "libhidltransport",
+        "libsync",
+    ],
+    static_libs: [
+        "android.hardware.graphics.allocator@2.0",
+        "android.hardware.graphics.composer@2.1",
+        "android.hardware.graphics.composer@2.1-vts",
+        "android.hardware.graphics.composer@2.2",
+        "android.hardware.graphics.composer@2.2-vts",
+        "android.hardware.graphics.composer@2.3",
+        "android.hardware.graphics.composer@2.3-vts",
+        "android.hardware.graphics.mapper@2.0",
+        "android.hardware.graphics.mapper@2.0-vts",
+        "android.hardware.graphics.mapper@2.1",
+    ],
+    header_libs: [
+        "android.hardware.graphics.composer@2.1-command-buffer",
+        "android.hardware.graphics.composer@2.2-command-buffer",
+    ],
+}
diff --git a/graphics/composer/2.3/vts/functional/OWNERS b/graphics/composer/2.3/vts/functional/OWNERS
new file mode 100644
index 0000000..234bc75
--- /dev/null
+++ b/graphics/composer/2.3/vts/functional/OWNERS
@@ -0,0 +1,7 @@
+# Graphics team
+olv@google.com
+stoza@google.com
+
+# VTS team
+yim@google.com
+zhuoyao@google.com
diff --git a/graphics/composer/2.3/vts/functional/VtsHalGraphicsComposerV2_3TargetTest.cpp b/graphics/composer/2.3/vts/functional/VtsHalGraphicsComposerV2_3TargetTest.cpp
new file mode 100644
index 0000000..f4e34f0
--- /dev/null
+++ b/graphics/composer/2.3/vts/functional/VtsHalGraphicsComposerV2_3TargetTest.cpp
@@ -0,0 +1,133 @@
+/*
+ * 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.
+ */
+
+#define LOG_TAG "graphics_composer_hidl_hal_test@2.3"
+
+#include <algorithm>
+
+#include <VtsHalHidlTargetTestBase.h>
+#include <android-base/logging.h>
+#include <composer-vts/2.1/GraphicsComposerCallback.h>
+#include <composer-vts/2.3/ComposerVts.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_3 {
+namespace vts {
+namespace {
+
+// Test environment for graphics.composer
+class GraphicsComposerHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
+   public:
+    // get the test environment singleton
+    static GraphicsComposerHidlEnvironment* Instance() {
+        static GraphicsComposerHidlEnvironment* instance = new GraphicsComposerHidlEnvironment;
+        return instance;
+    }
+
+    virtual void registerTestServices() override { registerTestService<IComposer>(); }
+
+   private:
+    GraphicsComposerHidlEnvironment() {}
+
+    GTEST_DISALLOW_COPY_AND_ASSIGN_(GraphicsComposerHidlEnvironment);
+};
+
+class GraphicsComposerHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+   protected:
+    void SetUp() override {
+        ASSERT_NO_FATAL_FAILURE(
+            mComposer = std::make_unique<Composer>(
+                GraphicsComposerHidlEnvironment::Instance()->getServiceName<IComposer>()));
+        ASSERT_NO_FATAL_FAILURE(mComposerClient = mComposer->createClient());
+
+        mComposerCallback = new V2_1::vts::GraphicsComposerCallback;
+        mComposerClient->registerCallback(mComposerCallback);
+
+        // assume the first display is primary and is never removed
+        mPrimaryDisplay = waitForFirstDisplay();
+
+        // explicitly disable vsync
+        mComposerClient->setVsyncEnabled(mPrimaryDisplay, false);
+        mComposerCallback->setVsyncAllowed(false);
+    }
+
+    void TearDown() override {
+        if (mComposerCallback != nullptr) {
+            EXPECT_EQ(0, mComposerCallback->getInvalidHotplugCount());
+            EXPECT_EQ(0, mComposerCallback->getInvalidRefreshCount());
+            EXPECT_EQ(0, mComposerCallback->getInvalidVsyncCount());
+        }
+    }
+
+    std::unique_ptr<Composer> mComposer;
+    std::unique_ptr<ComposerClient> mComposerClient;
+    sp<V2_1::vts::GraphicsComposerCallback> mComposerCallback;
+    // the first display and is assumed never to be removed
+    Display mPrimaryDisplay;
+
+   private:
+    Display waitForFirstDisplay() {
+        while (true) {
+            std::vector<Display> displays = mComposerCallback->getDisplays();
+            if (displays.empty()) {
+                usleep(5 * 1000);
+                continue;
+            }
+
+            return displays[0];
+        }
+    }
+};
+
+/**
+ * Test IComposerClient::getDisplayIdentificationData.
+ *
+ * TODO: Check that ports are unique for multiple displays.
+ */
+TEST_F(GraphicsComposerHidlTest, GetDisplayIdentificationData) {
+    uint8_t port0;
+    std::vector<uint8_t> data0;
+    if (mComposerClient->getDisplayIdentificationData(mPrimaryDisplay, &port0, &data0)) {
+        uint8_t port1;
+        std::vector<uint8_t> data1;
+        ASSERT_TRUE(mComposerClient->getDisplayIdentificationData(mPrimaryDisplay, &port1, &data1));
+
+        ASSERT_EQ(port0, port1) << "ports are not stable";
+        ASSERT_TRUE(data0.size() == data1.size() &&
+                    std::equal(data0.begin(), data0.end(), data1.begin()))
+            << "data is not stable";
+    }
+}
+
+}  // namespace
+}  // namespace vts
+}  // namespace V2_3
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
+
+int main(int argc, char** argv) {
+    using android::hardware::graphics::composer::V2_3::vts::GraphicsComposerHidlEnvironment;
+    ::testing::AddGlobalTestEnvironment(GraphicsComposerHidlEnvironment::Instance());
+    ::testing::InitGoogleTest(&argc, argv);
+    GraphicsComposerHidlEnvironment::Instance()->init(&argc, argv);
+    int status = RUN_ALL_TESTS();
+    return status;
+}
diff --git a/graphics/mapper/2.0/vts/functional/VtsHalGraphicsMapperV2_0TargetTest.cpp b/graphics/mapper/2.0/vts/functional/VtsHalGraphicsMapperV2_0TargetTest.cpp
index aa9beff..5ec0af2 100644
--- a/graphics/mapper/2.0/vts/functional/VtsHalGraphicsMapperV2_0TargetTest.cpp
+++ b/graphics/mapper/2.0/vts/functional/VtsHalGraphicsMapperV2_0TargetTest.cpp
@@ -16,6 +16,10 @@
 
 #define LOG_TAG "VtsHalGraphicsMapperV2_0TargetTest"
 
+#include <chrono>
+#include <thread>
+#include <vector>
+
 #include <VtsHalHidlTargetTestBase.h>
 #include <android-base/logging.h>
 #include <mapper-vts/2.0/MapperVts.h>
@@ -125,6 +129,36 @@
 }
 
 /**
+ * Test that IAllocator::allocate is thread-safe.
+ */
+TEST_F(GraphicsMapperHidlTest, AllocatorAllocateThreaded) {
+    BufferDescriptor descriptor;
+    ASSERT_NO_FATAL_FAILURE(descriptor = mGralloc->createDescriptor(mDummyDescriptorInfo));
+
+    std::atomic<bool> timeUp(false);
+    std::atomic<uint64_t> allocationCount(0);
+    auto threadLoop = [&]() {
+        while (!timeUp) {
+            mGralloc->getAllocator()->allocate(
+                descriptor, 1, [&](const auto&, const auto&, const auto&) { allocationCount++; });
+        }
+    };
+
+    std::vector<std::thread> threads;
+    for (int i = 0; i < 8; i++) {
+        threads.push_back(std::thread(threadLoop));
+    }
+
+    std::this_thread::sleep_for(std::chrono::seconds(3));
+    timeUp = true;
+    LOG(VERBOSE) << "Made " << allocationCount << " threaded allocations";
+
+    for (auto& thread : threads) {
+        thread.join();
+    }
+}
+
+/**
  * Test IMapper::createDescriptor with valid descriptor info.
  */
 TEST_F(GraphicsMapperHidlTest, CreateDescriptorBasic) {
diff --git a/media/bufferpool/2.0/Android.bp b/media/bufferpool/2.0/Android.bp
new file mode 100644
index 0000000..405990e
--- /dev/null
+++ b/media/bufferpool/2.0/Android.bp
@@ -0,0 +1,26 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.media.bufferpool@2.0",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "types.hal",
+        "IAccessor.hal",
+        "IClientManager.hal",
+        "IConnection.hal",
+    ],
+    interfaces: [
+        "android.hidl.base@1.0",
+    ],
+    types: [
+        "Buffer",
+        "BufferStatus",
+        "BufferStatusMessage",
+        "ResultStatus",
+    ],
+    gen_java: false,
+}
+
diff --git a/media/bufferpool/2.0/IAccessor.hal b/media/bufferpool/2.0/IAccessor.hal
new file mode 100644
index 0000000..bd70945
--- /dev/null
+++ b/media/bufferpool/2.0/IAccessor.hal
@@ -0,0 +1,72 @@
+/*
+ * 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.
+ */
+
+package android.hardware.media.bufferpool@2.0;
+
+import IConnection;
+/**
+ * IAccessor creates IConnection which is used from IClientManager in order to
+ * use functionality of the specified buffer pool.
+ */
+interface IAccessor {
+
+    /**
+     * Registers a new client and creates IConnection to the buffer pool for
+     * the client. IConnection and FMQ are used by IClientManager in order to
+     * communicate with the buffer pool. Via FMQ IClientManager sends
+     * BufferStatusMesage(s) to the buffer pool.
+     *
+     * FMQ is used to send buffer ownership status changes to a buffer pool
+     * from a buffer pool client. A buffer pool synchronizes FMQ messages when
+     * there is a hidl request from the clients. Every client has its own
+     * connection and FMQ to communicate with the buffer pool. So sending an
+     * FMQ message on behalf of other clients is not possible.
+     *
+     * FMQ messages are sent when a buffer is acquired or released. Also, FMQ
+     * messages are sent when a buffer is transferred from a client to another
+     * client. FMQ has its own ID from a buffer pool. A client is specified
+     * with the ID.
+     *
+     * To transfer a buffer, a sender must send an FMQ message. The message
+     * must include a receiver's ID and a transaction ID. A receiver must send
+     * the transaction ID to fetch a buffer from a buffer pool. Since the
+     * sender already registered the receiver via an FMQ message, The buffer
+     * pool must verify the receiver with the transaction ID. In order to
+     * prevent faking a receiver, a connection to a buffer pool from client is
+     * made and kept private. Also part of transaction ID is a sender ID in
+     * order to prevent fake transactions from other clients. This must be
+     * verified with an FMQ message from a buffer pool.
+     *
+     * @return status The status of the call.
+     *     OK               - A connection is made successfully.
+     *     NO_MEMORY        - Memory allocation failure occurred.
+     *     ALREADY_EXISTS   - A connection was already made.
+     *     CRITICAL_ERROR   - Other errors.
+     * @return connection The IConnection have interfaces
+     *     to get shared buffers from the buffer pool.
+     * @return connectionId Id of IConnection. The Id identifies
+     *     sender and receiver in FMQ messages during buffer transfer.
+     * @return toFmqDesc FMQ descriptor. The descriptor is used to
+     *     post buffer status messages.
+     * @return fromFmqDesc FMQ descriptor. The descriptor is used to
+     *     receive buffer invalidation messages from the buffer pool.
+     */
+    connect()
+        generates (ResultStatus status, IConnection connection,
+                   int64_t connectionId,
+                   fmq_sync<BufferStatusMessage> toFmqDesc,
+                   fmq_sync<BufferInvalidationMessage> fromFmqDesc);
+};
diff --git a/media/bufferpool/2.0/IClientManager.hal b/media/bufferpool/2.0/IClientManager.hal
new file mode 100644
index 0000000..9253bda
--- /dev/null
+++ b/media/bufferpool/2.0/IClientManager.hal
@@ -0,0 +1,48 @@
+/*
+ * 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.
+ */
+
+package android.hardware.media.bufferpool@2.0;
+
+import IAccessor;
+
+/**
+ * IClientManager manages IConnection(s) inside a process. A locally
+ * created IConnection represents a communication node(receiver) with the
+ * specified buffer pool(IAccessor).
+ * IConnection(s) are not exposed to other processes(IClientManager).
+ * IClientManager instance must be unique within a process.
+ */
+interface IClientManager {
+
+    /**
+     * Sets up a buffer receiving communication node for the specified
+     * buffer pool. A manager must create a IConnection to the buffer
+     * pool if it does not already have a connection.
+     *
+     * @param bufferPool a buffer pool which is specified with the IAccessor.
+     *     The specified buffer pool is the owner of received buffers.
+     * @return status The status of the call.
+     *     OK               - A sender was set successfully.
+     *     NO_MEMORY        - Memory allocation failure occurred.
+     *     ALREADY_EXISTS   - A sender was registered already.
+     *     CRITICAL_ERROR   - Other errors.
+     * @return connectionId the Id of the communication node to the buffer pool.
+     *     This id is used in FMQ to notify IAccessor that a buffer has been
+     *     sent to that connection during transfers.
+     */
+    registerSender(IAccessor bufferPool) generates
+        (ResultStatus status, int64_t connectionId);
+};
diff --git a/media/bufferpool/2.0/IConnection.hal b/media/bufferpool/2.0/IConnection.hal
new file mode 100644
index 0000000..629f83c
--- /dev/null
+++ b/media/bufferpool/2.0/IConnection.hal
@@ -0,0 +1,43 @@
+/*
+ * 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.
+ */
+
+package android.hardware.media.bufferpool@2.0;
+
+/**
+ * A connection to a buffer pool which handles requests from a buffer pool
+ * client. The connection must be made in order to receive buffers from
+ * other buffer pool clients.
+ */
+interface IConnection {
+
+    /**
+     * Retrieves a buffer using bufferId. The method must be called from
+     * receiving side of buffer during transferring only when the specified
+     * buffer is neither cached nor used. This fails if the specified
+     * transaction is not valid.
+     *
+     * @param transactionId Unique transaction id for buffer transferring.
+     * @param bufferId Id of the buffer to be fetched.
+     * @return status The status of the call.
+     *     OK               - A buffer was fetched successfully.
+     *     NO_MEMORY        - Memory allocation failure occurred.
+     *     NOT_FOUND        - A buffer was not found due to invalidation.
+     *     CRITICAL_ERROR   - Other errors.
+     * @return buffer The actual buffer which is specified with bufferId.
+     */
+    fetch(uint64_t transactionId, uint32_t bufferId) generates
+        (ResultStatus status, Buffer buffer);
+};
diff --git a/media/bufferpool/2.0/README.md b/media/bufferpool/2.0/README.md
new file mode 100644
index 0000000..ed985d8
--- /dev/null
+++ b/media/bufferpool/2.0/README.md
@@ -0,0 +1,54 @@
+1. Overview
+
+A buffer pool enables processes to transfer buffers asynchronously.
+Without a buffer pool, a process calls a synchronous method of the other
+process and waits until the call finishes transferring a buffer. This adds
+unwanted latency due to context switching. With help from a buffer pool, a
+process can pass buffers asynchronously and reduce context switching latency.
+
+Passing an interface and a handle adds extra latency also. To mitigate the
+latency, passing IDs with local cache is used. For security concerns about
+rogue clients, FMQ is used to communicate between a buffer pool and a client
+process. FMQ is used to send buffer ownership change status from a client
+process to a buffer pool. Except FMQ, a buffer pool does not use any shared
+memory.
+
+2. FMQ
+
+FMQ is used to send buffer ownership status changes to a buffer pool from a
+buffer pool client. A buffer pool synchronizes FMQ messages when there is a
+hidl request from the clients. Every client has its own connection and FMQ
+to communicate with the buffer pool. So sending an FMQ message on behalf of
+other clients is not possible.
+
+FMQ messages are sent when a buffer is acquired or released. Also, FMQ messages
+are sent when a buffer is transferred from a client to another client. FMQ has
+its own ID from a buffer pool. A client is specified with the ID.
+
+To transfer a buffer, a sender must send an FMQ message. The message must
+include a receiver's ID and a transaction ID. A receiver must send the
+transaction ID to fetch a buffer from a buffer pool. Since the sender already
+registered the receiver via an FMQ message, The buffer pool must verify the
+receiver with the transaction ID. In order to prevent faking a receiver, a
+connection to a buffer pool from client is made and kept privately. Also part of
+transaction ID is a sender ID in order to prevent fake transactions from other
+clients. This must be verified with an FMQ message from a buffer pool.
+
+FMQ messages are defined in BufferStatus and BufferStatusMessage of 'types.hal'.
+
+3. Interfaces
+
+IConnection
+A connection to a buffer pool from a buffer pool client. The connection
+provides the functionalities to share buffers between buffer pool clients.
+The connection must be unique for each client.
+
+IAccessor
+An accessor to a buffer pool which makes a connection to the buffer pool.
+IAccesssor#connect creates an IConnection.
+
+IClientManager
+A manager of buffer pool clients and clients' connections to buffer pools. It
+sets up a process to be a receiver of buffers from a buffer pool. The manager
+is unique in a process.
+
diff --git a/media/bufferpool/2.0/types.hal b/media/bufferpool/2.0/types.hal
new file mode 100644
index 0000000..7ce53b1
--- /dev/null
+++ b/media/bufferpool/2.0/types.hal
@@ -0,0 +1,109 @@
+/*
+ * 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.
+ */
+
+package android.hardware.media.bufferpool@2.0;
+
+enum ResultStatus : int32_t {
+    OK                  = 0,
+
+    NO_MEMORY           = 1,
+    ALREADY_EXISTS      = 2,
+    NOT_FOUND           = 3,
+    CRITICAL_ERROR      = 4,
+};
+
+/**
+ * Generic buffer for fast recycling for media/stagefright.
+ *
+ * During media pipeline buffer references are created, shared and
+ * destroyed frequently. The underlying buffers are allocated on demand
+ * by a buffer pool, and are recycled to the buffer pool when they are
+ * no longer referenced by the clients.
+ *
+ * E.g. ion or gralloc buffer
+ */
+struct Buffer {
+    uint32_t id;
+    handle buffer;
+};
+
+/**
+ * Buffer ownership status for the specified client.
+ * Buffer transfer status for the specified buffer transafer transaction.
+ * BufferStatus is posted along with BufferStatusMessage from a client to
+ * the buffer pool for synchronization after status change.
+ */
+enum BufferStatus : int32_t {
+    /** No longer used by the specified client. */
+    NOT_USED            = 0,
+    /** Buffer is acquired by the specified client. */
+    USED                = 1,
+    /** Buffer is sent by the specified client. */
+    TRANSFER_TO         = 2,
+    /** Buffer transfer is acked by the receiver client. */
+    TRANSFER_FROM       = 3,
+    /** Buffer transfer is timed out by receiver client. */
+    TRANSFER_TIMEOUT    = 4,
+    /** Buffer transfer is not acked by the receiver. */
+    TRANSFER_LOST       = 5,
+    /** Buffer fetch request from the client. */
+    TRANSFER_FETCH      = 6,
+    /** Buffer transaction succeeded. */
+    TRANSFER_OK         = 7,
+    /** Buffer transaction failure. */
+    TRANSFER_ERROR      = 8,
+};
+
+/**
+ * Buffer ownership status change message. This message is
+ * sent via fmq to the buffer pool from client processes.
+ */
+struct BufferStatusMessage {
+    /**
+     * Transaction Id = (SenderId : sender local transaction Id)
+     * Transaction Id is created from sender and posted via fmq within
+     * TRANSFER_TO message.
+     */
+    uint64_t transactionId;
+    uint32_t bufferId;
+    BufferStatus newStatus;
+    /** Used by the buffer pool. not by client. */
+    int64_t connectionId;
+    /** Valid only when TRANSFER_TO is posted. */
+    int64_t targetConnectionId;
+    /**
+     * Used by the buffer pool, not by client.
+     * Monotonic timestamp in Us since fixed point in time as decided
+     * by the sender of the message
+     */
+    int64_t timestampUs;
+};
+
+/*
+ * Buffer pool sends a buffer invalidation message to clients in order to
+ * ensure fast reclamation of the buffers. Clients must free the invalidated
+ * buffers as soon as possible upon receiving the message.
+ */
+struct BufferInvalidationMessage {
+    /**
+     * Buffers from fromBufferId to toBufferId must be invalidated.
+     * Both of fromBufferId and toBufferId are inclusive.
+     * If fromBufferId > toBufferID, wrap happens. In that case
+     * the wrap is based on UINT32_MAX.
+     */
+    uint32_t fromBufferId;
+    uint32_t toBufferId;
+};
diff --git a/media/omx/1.0/vts/functional/common/media_hidl_test_common.cpp b/media/omx/1.0/vts/functional/common/media_hidl_test_common.cpp
index 34a96a0..88a9e26 100644
--- a/media/omx/1.0/vts/functional/common/media_hidl_test_common.cpp
+++ b/media/omx/1.0/vts/functional/common/media_hidl_test_common.cpp
@@ -470,7 +470,7 @@
     status = omxNode->sendCommand(toRawCommandType(OMX_CommandStateSet),
                                   OMX_StateExecuting);
     ASSERT_EQ(status, android::hardware::media::omx::V1_0::Status::OK);
-    status = observer->dequeueMessage(&msg, DEFAULT_TIMEOUT);
+    status = observer->dequeueMessage(&msg, RELAXED_TIMEOUT);
     ASSERT_EQ(status, android::hardware::media::omx::V1_0::Status::OK);
     ASSERT_EQ(msg.type, Message::Type::EVENT);
     ASSERT_EQ(msg.data.eventData.event, OMX_EventCmdComplete);
diff --git a/media/omx/1.0/vts/functional/common/media_hidl_test_common.h b/media/omx/1.0/vts/functional/common/media_hidl_test_common.h
index c1863d5..1575ba2 100644
--- a/media/omx/1.0/vts/functional/common/media_hidl_test_common.h
+++ b/media/omx/1.0/vts/functional/common/media_hidl_test_common.h
@@ -41,6 +41,8 @@
 /* As component is switching states (loaded<->idle<->execute), dequeueMessage()
  * expects the events to be received within this duration */
 #define DEFAULT_TIMEOUT 100000
+// b/70933963
+#define RELAXED_TIMEOUT 400000
 /* Time interval between successive Input/Output enqueues */
 #define DEFAULT_TIMEOUT_Q 2000
 /* While the component is amidst a process call, asynchronous commands like
diff --git a/media/omx/1.0/vts/functional/component/VtsHalMediaOmxV1_0TargetComponentTest.cpp b/media/omx/1.0/vts/functional/component/VtsHalMediaOmxV1_0TargetComponentTest.cpp
index 7750a12..4ddc833 100644
--- a/media/omx/1.0/vts/functional/component/VtsHalMediaOmxV1_0TargetComponentTest.cpp
+++ b/media/omx/1.0/vts/functional/component/VtsHalMediaOmxV1_0TargetComponentTest.cpp
@@ -1149,15 +1149,13 @@
             ASSERT_EQ(status, android::hardware::media::omx::V1_0::Status::OK);
 
             // do not enable the port until all the buffers are supplied
-            status = observer->dequeueMessage(&msg, DEFAULT_TIMEOUT,
-                                              &pBuffer[0], &pBuffer[1]);
+            status = observer->dequeueMessage(&msg, RELAXED_TIMEOUT, &pBuffer[0], &pBuffer[1]);
             ASSERT_EQ(status,
                       android::hardware::media::omx::V1_0::Status::TIMED_OUT);
 
             ASSERT_NO_FATAL_FAILURE(allocatePortBuffers(
                 omxNode, &pBuffer[i - portBase], i, portMode[i - portBase]));
-            status = observer->dequeueMessage(&msg, DEFAULT_TIMEOUT,
-                                              &pBuffer[0], &pBuffer[1]);
+            status = observer->dequeueMessage(&msg, RELAXED_TIMEOUT, &pBuffer[0], &pBuffer[1]);
             ASSERT_EQ(status, android::hardware::media::omx::V1_0::Status::OK);
             ASSERT_EQ(msg.type, Message::Type::EVENT);
             ASSERT_EQ(msg.data.eventData.data1, OMX_CommandPortEnable);
diff --git a/sensors/1.0/default/OWNERS b/sensors/1.0/default/OWNERS
index 6a38a1f..2031d84 100644
--- a/sensors/1.0/default/OWNERS
+++ b/sensors/1.0/default/OWNERS
@@ -1,2 +1,2 @@
-ashutoshj@google.com
-pengxu@google.com
+bduddie@google.com
+bstack@google.com
diff --git a/sensors/1.0/vts/functional/OWNERS b/sensors/1.0/vts/functional/OWNERS
index 8715e5d..759d87b 100644
--- a/sensors/1.0/vts/functional/OWNERS
+++ b/sensors/1.0/vts/functional/OWNERS
@@ -1,6 +1,6 @@
 # Sensors team
-ashutoshj@google.com
-pengxu@google.com
+bduddie@google.com
+bstack@google.com
 
 # VTS team
 trong@google.com
diff --git a/wifi/1.2/default/OWNERS b/wifi/1.0/vts/OWNERS
similarity index 100%
copy from wifi/1.2/default/OWNERS
copy to wifi/1.0/vts/OWNERS
diff --git a/wifi/1.2/default/OWNERS b/wifi/1.1/vts/OWNERS
similarity index 100%
copy from wifi/1.2/default/OWNERS
copy to wifi/1.1/vts/OWNERS
diff --git a/wifi/1.1/vts/functional/OWNERS b/wifi/1.1/vts/functional/OWNERS
deleted file mode 100644
index 2878acc..0000000
--- a/wifi/1.1/vts/functional/OWNERS
+++ /dev/null
@@ -1,2 +0,0 @@
-rpius@google.com
-quiche@google.com
diff --git a/wifi/1.2/default/tests/runtests.sh b/wifi/1.2/default/tests/runtests.sh
deleted file mode 100755
index 966a6a7..0000000
--- a/wifi/1.2/default/tests/runtests.sh
+++ /dev/null
@@ -1,50 +0,0 @@
-#!/usr/bin/env bash
-
-# 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.
-
-if [ -z $ANDROID_BUILD_TOP ]; then
-  echo "You need to source and lunch before you can use this script"
-  exit 1
-fi
-
-echo "Running tests"
-set -e # fail early
-
-#NOTE We can't actually run these commands, since they rely on functions added by
-#build / envsetup.sh to the bash shell environment.
-echo "+ mmma -j32 $ANDROID_BUILD_TOP/"
-make -j32 -C $ANDROID_BUILD_TOP -f build/core/main.mk \
-    MODULES-IN-hardware-interfaces-wifi-1.2-default
-
-set -x # print commands
-
-adb wait-for-device
-adb root
-adb wait-for-device
-
-#'disable-verity' will appear in 'adb remount' output if
-#dm - verity is enabled and needs to be disabled.
-if adb remount | grep 'disable-verity'; then
-  adb disable-verity
-  adb reboot
-  adb wait-for-device
-  adb root
-  adb wait-for-device
-  adb remount
-fi
-
-adb sync
-
-adb shell /data/nativetest/vendor/android.hardware.wifi@1.0-service-tests/android.hardware.wifi@1.0-service-tests
diff --git a/wifi/1.2/vts/OWNERS b/wifi/1.2/vts/OWNERS
index 811c857..8bfb148 100644
--- a/wifi/1.2/vts/OWNERS
+++ b/wifi/1.2/vts/OWNERS
@@ -1,4 +1,2 @@
 rpius@google.com
-quiche@google.com
-arabawy@google.com
-yim@google.com
\ No newline at end of file
+etancohen@google.com
diff --git a/wifi/1.3/Android.bp b/wifi/1.3/Android.bp
new file mode 100644
index 0000000..95fbf83
--- /dev/null
+++ b/wifi/1.3/Android.bp
@@ -0,0 +1,20 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.wifi@1.3",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "IWifi.hal",
+    ],
+    interfaces: [
+        "android.hardware.wifi@1.0",
+        "android.hardware.wifi@1.1",
+        "android.hardware.wifi@1.2",
+        "android.hidl.base@1.0",
+    ],
+    gen_java: true,
+}
+
diff --git a/wifi/1.3/IWifi.hal b/wifi/1.3/IWifi.hal
new file mode 100644
index 0000000..298e722
--- /dev/null
+++ b/wifi/1.3/IWifi.hal
@@ -0,0 +1,28 @@
+/*
+ * 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.
+ */
+
+package android.hardware.wifi@1.3;
+
+import @1.2::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 @1.2::IWifiChip
+ */
+interface IWifi extends @1.2::IWifi {
+};
diff --git a/wifi/1.2/default/Android.mk b/wifi/1.3/default/Android.mk
similarity index 94%
rename from wifi/1.2/default/Android.mk
rename to wifi/1.3/default/Android.mk
index 3919690..541e5f0 100644
--- a/wifi/1.2/default/Android.mk
+++ b/wifi/1.3/default/Android.mk
@@ -58,7 +58,8 @@
     libwifi-system-iface \
     android.hardware.wifi@1.0 \
     android.hardware.wifi@1.1 \
-    android.hardware.wifi@1.2
+    android.hardware.wifi@1.2 \
+    android.hardware.wifi@1.3
 LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)
 include $(BUILD_STATIC_LIBRARY)
 
@@ -84,7 +85,8 @@
     libwifi-system-iface \
     android.hardware.wifi@1.0 \
     android.hardware.wifi@1.1 \
-    android.hardware.wifi@1.2
+    android.hardware.wifi@1.2 \
+    android.hardware.wifi@1.3
 LOCAL_STATIC_LIBRARIES := \
     android.hardware.wifi@1.0-service-lib
 LOCAL_INIT_RC := android.hardware.wifi@1.0-service.rc
@@ -107,11 +109,11 @@
 LOCAL_STATIC_LIBRARIES := \
     libgmock \
     libgtest \
+    libhidlbase \
     android.hardware.wifi@1.0-service-lib
 LOCAL_SHARED_LIBRARIES := \
     libbase \
     libcutils \
-    libhidlbase \
     libhidltransport \
     liblog \
     libnl \
@@ -120,5 +122,6 @@
     libwifi-system-iface \
     android.hardware.wifi@1.0 \
     android.hardware.wifi@1.1 \
-    android.hardware.wifi@1.2
+    android.hardware.wifi@1.2 \
+    android.hardware.wifi@1.3
 include $(BUILD_NATIVE_TEST)
diff --git a/wifi/1.2/default/OWNERS b/wifi/1.3/default/OWNERS
similarity index 100%
rename from wifi/1.2/default/OWNERS
rename to wifi/1.3/default/OWNERS
diff --git a/wifi/1.2/default/THREADING.README b/wifi/1.3/default/THREADING.README
similarity index 100%
rename from wifi/1.2/default/THREADING.README
rename to wifi/1.3/default/THREADING.README
diff --git a/wifi/1.2/default/android.hardware.wifi@1.0-service.rc b/wifi/1.3/default/android.hardware.wifi@1.0-service.rc
similarity index 100%
rename from wifi/1.2/default/android.hardware.wifi@1.0-service.rc
rename to wifi/1.3/default/android.hardware.wifi@1.0-service.rc
diff --git a/wifi/1.2/default/hidl_callback_util.h b/wifi/1.3/default/hidl_callback_util.h
similarity index 98%
rename from wifi/1.2/default/hidl_callback_util.h
rename to wifi/1.3/default/hidl_callback_util.h
index 97f312a..a44af79 100644
--- a/wifi/1.2/default/hidl_callback_util.h
+++ b/wifi/1.3/default/hidl_callback_util.h
@@ -52,7 +52,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 namespace hidl_callback_util {
 template <typename CallbackType>
@@ -117,7 +117,7 @@
 
 }  // namespace hidl_callback_util
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/hidl_return_util.h b/wifi/1.3/default/hidl_return_util.h
similarity index 98%
rename from wifi/1.2/default/hidl_return_util.h
rename to wifi/1.3/default/hidl_return_util.h
index 914c1b4..9707444 100644
--- a/wifi/1.2/default/hidl_return_util.h
+++ b/wifi/1.3/default/hidl_return_util.h
@@ -23,7 +23,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 namespace hidl_return_util {
 using namespace android::hardware::wifi::V1_0;
@@ -113,7 +113,7 @@
 
 }  // namespace hidl_return_util
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/hidl_struct_util.cpp b/wifi/1.3/default/hidl_struct_util.cpp
similarity index 98%
rename from wifi/1.2/default/hidl_struct_util.cpp
rename to wifi/1.3/default/hidl_struct_util.cpp
index 39ac544..e793236 100644
--- a/wifi/1.2/default/hidl_struct_util.cpp
+++ b/wifi/1.3/default/hidl_struct_util.cpp
@@ -22,7 +22,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 namespace hidl_struct_util {
 
@@ -69,9 +69,9 @@
     return {};
 }
 
-IWifiChip::ChipCapabilityMask convertLegacyFeatureToHidlChipCapability(
+V1_2::IWifiChip::ChipCapabilityMask convertLegacyFeatureToHidlChipCapability(
     uint32_t feature) {
-    using HidlChipCaps = IWifiChip::ChipCapabilityMask;
+    using HidlChipCaps = V1_2::IWifiChip::ChipCapabilityMask;
     switch (feature) {
         case WIFI_FEATURE_SET_TX_POWER_LIMIT:
             return HidlChipCaps::SET_TX_POWER_LIMIT;
@@ -139,9 +139,9 @@
                 convertLegacyLoggerFeatureToHidlChipCapability(feature);
         }
     }
-    for (const auto feature : {WIFI_FEATURE_SET_TX_POWER_LIMIT,
-                               WIFI_FEATURE_USE_BODY_HEAD_SAR,
-                               WIFI_FEATURE_D2D_RTT, WIFI_FEATURE_D2AP_RTT}) {
+    for (const auto feature :
+         {WIFI_FEATURE_SET_TX_POWER_LIMIT, WIFI_FEATURE_USE_BODY_HEAD_SAR,
+          WIFI_FEATURE_D2D_RTT, WIFI_FEATURE_D2AP_RTT}) {
         if (feature & legacy_feature_set) {
             *hidl_caps |= convertLegacyFeatureToHidlChipCapability(feature);
         }
@@ -267,26 +267,26 @@
     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:
+        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(
-    IWifiChip::TxPowerScenario hidl_scenario) {
+    V1_2::IWifiChip::TxPowerScenario hidl_scenario) {
     switch (hidl_scenario) {
         // This is the only supported scenario for V1_1
-        case IWifiChip::TxPowerScenario::VOICE_CALL:
+        case V1_2::IWifiChip::TxPowerScenario::VOICE_CALL:
             return legacy_hal::WIFI_POWER_SCENARIO_VOICE_CALL;
         // Those are the supported scenarios for V1_2
-        case IWifiChip::TxPowerScenario::ON_HEAD_CELL_OFF:
+        case V1_2::IWifiChip::TxPowerScenario::ON_HEAD_CELL_OFF:
             return legacy_hal::WIFI_POWER_SCENARIO_ON_HEAD_CELL_OFF;
-        case IWifiChip::TxPowerScenario::ON_HEAD_CELL_ON:
+        case V1_2::IWifiChip::TxPowerScenario::ON_HEAD_CELL_ON:
             return legacy_hal::WIFI_POWER_SCENARIO_ON_HEAD_CELL_ON;
-        case IWifiChip::TxPowerScenario::ON_BODY_CELL_OFF:
+        case V1_2::IWifiChip::TxPowerScenario::ON_BODY_CELL_OFF:
             return legacy_hal::WIFI_POWER_SCENARIO_ON_BODY_CELL_OFF;
-        case IWifiChip::TxPowerScenario::ON_BODY_CELL_ON:
+        case V1_2::IWifiChip::TxPowerScenario::ON_BODY_CELL_ON:
             return legacy_hal::WIFI_POWER_SCENARIO_ON_BODY_CELL_ON;
     };
     CHECK(false);
@@ -294,7 +294,7 @@
 
 bool convertLegacyWifiMacInfoToHidl(
     const legacy_hal::WifiMacInfo& legacy_mac_info,
-    IWifiChipEventCallback::RadioModeInfo* hidl_radio_mode_info) {
+    V1_2::IWifiChipEventCallback::RadioModeInfo* hidl_radio_mode_info) {
     if (!hidl_radio_mode_info) {
         return false;
     }
@@ -313,9 +313,9 @@
     } else {
         hidl_radio_mode_info->bandInfo = WifiBand::BAND_UNSPECIFIED;
     }
-    std::vector<IWifiChipEventCallback::IfaceInfo> iface_info_vec;
+    std::vector<V1_2::IWifiChipEventCallback::IfaceInfo> iface_info_vec;
     for (const auto& legacy_iface_info : legacy_mac_info.iface_infos) {
-        IWifiChipEventCallback::IfaceInfo iface_info;
+        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);
@@ -326,14 +326,15 @@
 
 bool convertLegacyWifiMacInfosToHidl(
     const std::vector<legacy_hal::WifiMacInfo>& legacy_mac_infos,
-    std::vector<IWifiChipEventCallback::RadioModeInfo>* hidl_radio_mode_infos) {
+    std::vector<V1_2::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) {
-        IWifiChipEventCallback::RadioModeInfo hidl_radio_mode_info;
+        V1_2::IWifiChipEventCallback::RadioModeInfo hidl_radio_mode_info;
         if (!convertLegacyWifiMacInfoToHidl(legacy_mac_info,
                                             &hidl_radio_mode_info)) {
             return false;
@@ -1197,7 +1198,7 @@
 
 bool convertHidlNanEnableRequest_1_2ToLegacy(
     const NanEnableRequest& hidl_request1,
-    const NanConfigRequestSupplemental& hidl_request2,
+    const V1_2::NanConfigRequestSupplemental& hidl_request2,
     legacy_hal::NanEnableRequest* legacy_request) {
     if (!legacy_request) {
         LOG(ERROR)
@@ -1708,7 +1709,7 @@
 
 bool convertHidlNanConfigRequest_1_2ToLegacy(
     const NanConfigRequest& hidl_request1,
-    const NanConfigRequestSupplemental& hidl_request2,
+    const V1_2::NanConfigRequestSupplemental& hidl_request2,
     legacy_hal::NanConfigRequest* legacy_request) {
     if (!legacy_request) {
         LOG(ERROR) << "convertHidlNanConfigRequest_1_2ToLegacy: legacy_request "
@@ -2039,7 +2040,7 @@
 
 bool convertLegacyNdpChannelInfoToHidl(
     const legacy_hal::NanChannelInfo& legacy_struct,
-    NanDataPathChannelInfo* hidl_struct) {
+    V1_2::NanDataPathChannelInfo* hidl_struct) {
     if (!hidl_struct) {
         LOG(ERROR) << "convertLegacyNdpChannelInfoToHidl: hidl_struct is null";
         return false;
@@ -2056,7 +2057,7 @@
 
 bool convertLegacyNanDataPathConfirmIndToHidl(
     const legacy_hal::NanDataPathConfirmInd& legacy_ind,
-    NanDataPathConfirmInd* hidl_ind) {
+    V1_2::NanDataPathConfirmInd* hidl_ind) {
     if (!hidl_ind) {
         LOG(ERROR)
             << "convertLegacyNanDataPathConfirmIndToHidl: hidl_ind is null";
@@ -2077,9 +2078,9 @@
         convertLegacyNanStatusTypeToHidl(legacy_ind.reason_code);
     hidl_ind->V1_0.status.description = "";  // TODO: b/34059183
 
-    std::vector<NanDataPathChannelInfo> channelInfo;
+    std::vector<V1_2::NanDataPathChannelInfo> channelInfo;
     for (unsigned int i = 0; i < legacy_ind.num_channels; ++i) {
-        NanDataPathChannelInfo hidl_struct;
+        V1_2::NanDataPathChannelInfo hidl_struct;
         if (!convertLegacyNdpChannelInfoToHidl(legacy_ind.channel_info[i],
                                                &hidl_struct)) {
             return false;
@@ -2093,7 +2094,7 @@
 
 bool convertLegacyNanDataPathScheduleUpdateIndToHidl(
     const legacy_hal::NanDataPathScheduleUpdateInd& legacy_ind,
-    NanDataPathScheduleUpdateInd* hidl_ind) {
+    V1_2::NanDataPathScheduleUpdateInd* hidl_ind) {
     if (!hidl_ind) {
         LOG(ERROR) << "convertLegacyNanDataPathScheduleUpdateIndToHidl: "
                       "hidl_ind is null";
@@ -2103,9 +2104,9 @@
 
     hidl_ind->peerDiscoveryAddress =
         hidl_array<uint8_t, 6>(legacy_ind.peer_mac_addr);
-    std::vector<NanDataPathChannelInfo> channelInfo;
+    std::vector<V1_2::NanDataPathChannelInfo> channelInfo;
     for (unsigned int i = 0; i < legacy_ind.num_channels; ++i) {
-        NanDataPathChannelInfo hidl_struct;
+        V1_2::NanDataPathChannelInfo hidl_struct;
         if (!convertLegacyNdpChannelInfoToHidl(legacy_ind.channel_info[i],
                                                &hidl_struct)) {
             return false;
@@ -2616,7 +2617,7 @@
 }
 }  // namespace hidl_struct_util
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/hidl_struct_util.h b/wifi/1.3/default/hidl_struct_util.h
similarity index 95%
rename from wifi/1.2/default/hidl_struct_util.h
rename to wifi/1.3/default/hidl_struct_util.h
index 3c789c0..e2ba00c 100644
--- a/wifi/1.2/default/hidl_struct_util.h
+++ b/wifi/1.3/default/hidl_struct_util.h
@@ -36,7 +36,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 namespace hidl_struct_util {
 using namespace android::hardware::wifi::V1_0;
@@ -57,10 +57,11 @@
 legacy_hal::wifi_power_scenario convertHidlTxPowerScenarioToLegacy(
     V1_1::IWifiChip::TxPowerScenario hidl_scenario);
 legacy_hal::wifi_power_scenario convertHidlTxPowerScenarioToLegacy_1_2(
-    IWifiChip::TxPowerScenario hidl_scenario);
+    V1_2::IWifiChip::TxPowerScenario hidl_scenario);
 bool convertLegacyWifiMacInfosToHidl(
     const std::vector<legacy_hal::WifiMacInfo>& legacy_mac_infos,
-    std::vector<IWifiChipEventCallback::RadioModeInfo>* hidl_radio_mode_infos);
+    std::vector<V1_2::IWifiChipEventCallback::RadioModeInfo>*
+        hidl_radio_mode_infos);
 
 // STA iface conversion methods.
 bool convertLegacyFeaturesToHidlStaCapabilities(
@@ -115,11 +116,11 @@
     legacy_hal::NanConfigRequest* legacy_request);
 bool convertHidlNanEnableRequest_1_2ToLegacy(
     const NanEnableRequest& hidl_request1,
-    const NanConfigRequestSupplemental& hidl_request2,
+    const V1_2::NanConfigRequestSupplemental& hidl_request2,
     legacy_hal::NanEnableRequest* legacy_request);
 bool convertHidlNanConfigRequest_1_2ToLegacy(
     const NanConfigRequest& hidl_request1,
-    const NanConfigRequestSupplemental& hidl_request2,
+    const V1_2::NanConfigRequestSupplemental& hidl_request2,
     legacy_hal::NanConfigRequest* legacy_request);
 bool convertHidlNanPublishRequestToLegacy(
     const NanPublishRequest& hidl_request,
@@ -152,10 +153,10 @@
     NanDataPathRequestInd* hidl_ind);
 bool convertLegacyNanDataPathConfirmIndToHidl(
     const legacy_hal::NanDataPathConfirmInd& legacy_ind,
-    NanDataPathConfirmInd* hidl_ind);
+    V1_2::NanDataPathConfirmInd* hidl_ind);
 bool convertLegacyNanDataPathScheduleUpdateIndToHidl(
     const legacy_hal::NanDataPathScheduleUpdateInd& legacy_ind,
-    NanDataPathScheduleUpdateInd* hidl_ind);
+    V1_2::NanDataPathScheduleUpdateInd* hidl_ind);
 
 // RTT controller conversion methods.
 bool convertHidlVectorOfRttConfigToLegacy(
@@ -184,7 +185,7 @@
     std::vector<RttResult>* hidl_results);
 }  // namespace hidl_struct_util
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/hidl_sync_util.cpp b/wifi/1.3/default/hidl_sync_util.cpp
similarity index 96%
rename from wifi/1.2/default/hidl_sync_util.cpp
rename to wifi/1.3/default/hidl_sync_util.cpp
index ad8448a..160727f 100644
--- a/wifi/1.2/default/hidl_sync_util.cpp
+++ b/wifi/1.3/default/hidl_sync_util.cpp
@@ -23,7 +23,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 namespace hidl_sync_util {
 
@@ -33,7 +33,7 @@
 
 }  // namespace hidl_sync_util
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/hidl_sync_util.h b/wifi/1.3/default/hidl_sync_util.h
similarity index 96%
rename from wifi/1.2/default/hidl_sync_util.h
rename to wifi/1.3/default/hidl_sync_util.h
index 8381862..ebfb051 100644
--- a/wifi/1.2/default/hidl_sync_util.h
+++ b/wifi/1.3/default/hidl_sync_util.h
@@ -24,13 +24,13 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 namespace hidl_sync_util {
 std::unique_lock<std::recursive_mutex> acquireGlobalLock();
 }  // namespace hidl_sync_util
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/ringbuffer.cpp b/wifi/1.3/default/ringbuffer.cpp
similarity index 97%
rename from wifi/1.2/default/ringbuffer.cpp
rename to wifi/1.3/default/ringbuffer.cpp
index c126b36..1294c52 100644
--- a/wifi/1.2/default/ringbuffer.cpp
+++ b/wifi/1.3/default/ringbuffer.cpp
@@ -21,7 +21,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 
 Ringbuffer::Ringbuffer(size_t maxSize) : size_(0), maxSize_(maxSize) {}
@@ -48,7 +48,7 @@
 }
 
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/ringbuffer.h b/wifi/1.3/default/ringbuffer.h
similarity index 97%
rename from wifi/1.2/default/ringbuffer.h
rename to wifi/1.3/default/ringbuffer.h
index 4808e40..d9f8df6 100644
--- a/wifi/1.2/default/ringbuffer.h
+++ b/wifi/1.3/default/ringbuffer.h
@@ -23,7 +23,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 
 /**
@@ -45,7 +45,7 @@
 };
 
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/service.cpp b/wifi/1.3/default/service.cpp
similarity index 83%
rename from wifi/1.2/default/service.cpp
rename to wifi/1.3/default/service.cpp
index 01d22bd..5fd83c1 100644
--- a/wifi/1.2/default/service.cpp
+++ b/wifi/1.3/default/service.cpp
@@ -26,10 +26,10 @@
 
 using android::hardware::configureRpcThreadpool;
 using android::hardware::joinRpcThreadpool;
-using android::hardware::wifi::V1_2::implementation::feature_flags::
+using android::hardware::wifi::V1_3::implementation::feature_flags::
     WifiFeatureFlags;
-using android::hardware::wifi::V1_2::implementation::legacy_hal::WifiLegacyHal;
-using android::hardware::wifi::V1_2::implementation::mode_controller::
+using android::hardware::wifi::V1_3::implementation::legacy_hal::WifiLegacyHal;
+using android::hardware::wifi::V1_3::implementation::mode_controller::
     WifiModeController;
 
 int main(int /*argc*/, char** argv) {
@@ -40,8 +40,8 @@
     configureRpcThreadpool(1, true /* callerWillJoin */);
 
     // Setup hwbinder service
-    android::sp<android::hardware::wifi::V1_2::IWifi> service =
-        new android::hardware::wifi::V1_2::implementation::Wifi(
+    android::sp<android::hardware::wifi::V1_3::IWifi> service =
+        new android::hardware::wifi::V1_3::implementation::Wifi(
             std::make_shared<WifiLegacyHal>(),
             std::make_shared<WifiModeController>(),
             std::make_shared<WifiFeatureFlags>());
diff --git a/wifi/1.2/default/tests/hidl_struct_util_unit_tests.cpp b/wifi/1.3/default/tests/hidl_struct_util_unit_tests.cpp
similarity index 84%
rename from wifi/1.2/default/tests/hidl_struct_util_unit_tests.cpp
rename to wifi/1.3/default/tests/hidl_struct_util_unit_tests.cpp
index 1d6e9e4..4cd3719 100644
--- a/wifi/1.2/default/tests/hidl_struct_util_unit_tests.cpp
+++ b/wifi/1.3/default/tests/hidl_struct_util_unit_tests.cpp
@@ -34,7 +34,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 using namespace android::hardware::wifi::V1_0;
 
@@ -54,7 +54,8 @@
     legacy_mac_info1.iface_infos.push_back(legacy_iface_info2);
     legacy_mac_infos.push_back(legacy_mac_info1);
 
-    std::vector<IWifiChipEventCallback::RadioModeInfo> hidl_radio_mode_infos;
+    std::vector<V1_2::IWifiChipEventCallback::RadioModeInfo>
+        hidl_radio_mode_infos;
     ASSERT_TRUE(hidl_struct_util::convertLegacyWifiMacInfosToHidl(
         legacy_mac_infos, &hidl_radio_mode_infos));
 
@@ -88,18 +89,20 @@
     legacy_mac_info2.iface_infos.push_back(legacy_iface_info2);
     legacy_mac_infos.push_back(legacy_mac_info2);
 
-    std::vector<IWifiChipEventCallback::RadioModeInfo> hidl_radio_mode_infos;
+    std::vector<V1_2::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 IWifiChipEventCallback::RadioModeInfo& x) {
-            return x.radioId == legacy_mac_info1.wlan_mac_id;
-        });
+    const auto hidl_radio_mode_info1 =
+        std::find_if(hidl_radio_mode_infos.begin(), hidl_radio_mode_infos.end(),
+                     [&legacy_mac_info1](
+                         const V1_2::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(WifiBand::BAND_5GHZ, hidl_radio_mode_info1->bandInfo);
     ASSERT_EQ(1u, hidl_radio_mode_info1->ifaceInfos.size());
@@ -109,11 +112,12 @@
               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 IWifiChipEventCallback::RadioModeInfo& x) {
-            return x.radioId == legacy_mac_info2.wlan_mac_id;
-        });
+    const auto hidl_radio_mode_info2 =
+        std::find_if(hidl_radio_mode_infos.begin(), hidl_radio_mode_infos.end(),
+                     [&legacy_mac_info2](
+                         const V1_2::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(WifiBand::BAND_24GHZ, hidl_radio_mode_info2->bandInfo);
     ASSERT_EQ(1u, hidl_radio_mode_info2->ifaceInfos.size());
@@ -123,7 +127,7 @@
               hidl_iface_info2.channel);
 }
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/tests/main.cpp b/wifi/1.3/default/tests/main.cpp
similarity index 100%
rename from wifi/1.2/default/tests/main.cpp
rename to wifi/1.3/default/tests/main.cpp
diff --git a/wifi/1.2/default/tests/mock_wifi_feature_flags.cpp b/wifi/1.3/default/tests/mock_wifi_feature_flags.cpp
similarity index 96%
rename from wifi/1.2/default/tests/mock_wifi_feature_flags.cpp
rename to wifi/1.3/default/tests/mock_wifi_feature_flags.cpp
index 8d0b192..a393fdc 100644
--- a/wifi/1.2/default/tests/mock_wifi_feature_flags.cpp
+++ b/wifi/1.3/default/tests/mock_wifi_feature_flags.cpp
@@ -21,7 +21,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 namespace feature_flags {
 
@@ -29,7 +29,7 @@
 
 }  // namespace feature_flags
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/tests/mock_wifi_feature_flags.h b/wifi/1.3/default/tests/mock_wifi_feature_flags.h
similarity index 96%
rename from wifi/1.2/default/tests/mock_wifi_feature_flags.h
rename to wifi/1.3/default/tests/mock_wifi_feature_flags.h
index 2a36dd5..86c50a7 100644
--- a/wifi/1.2/default/tests/mock_wifi_feature_flags.h
+++ b/wifi/1.3/default/tests/mock_wifi_feature_flags.h
@@ -24,7 +24,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 namespace feature_flags {
 
@@ -39,7 +39,7 @@
 
 }  // namespace feature_flags
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/tests/mock_wifi_legacy_hal.cpp b/wifi/1.3/default/tests/mock_wifi_legacy_hal.cpp
similarity index 96%
rename from wifi/1.2/default/tests/mock_wifi_legacy_hal.cpp
rename to wifi/1.3/default/tests/mock_wifi_legacy_hal.cpp
index 8381dde..4cd279d 100644
--- a/wifi/1.2/default/tests/mock_wifi_legacy_hal.cpp
+++ b/wifi/1.3/default/tests/mock_wifi_legacy_hal.cpp
@@ -24,14 +24,14 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 namespace legacy_hal {
 
 MockWifiLegacyHal::MockWifiLegacyHal() : WifiLegacyHal() {}
 }  // namespace legacy_hal
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/tests/mock_wifi_legacy_hal.h b/wifi/1.3/default/tests/mock_wifi_legacy_hal.h
similarity index 97%
rename from wifi/1.2/default/tests/mock_wifi_legacy_hal.h
rename to wifi/1.3/default/tests/mock_wifi_legacy_hal.h
index 43370b4..deb3a5a 100644
--- a/wifi/1.2/default/tests/mock_wifi_legacy_hal.h
+++ b/wifi/1.3/default/tests/mock_wifi_legacy_hal.h
@@ -24,7 +24,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 namespace legacy_hal {
 
@@ -49,7 +49,7 @@
 };
 }  // namespace legacy_hal
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/tests/mock_wifi_mode_controller.cpp b/wifi/1.3/default/tests/mock_wifi_mode_controller.cpp
similarity index 96%
rename from wifi/1.2/default/tests/mock_wifi_mode_controller.cpp
rename to wifi/1.3/default/tests/mock_wifi_mode_controller.cpp
index 461a581..2b0ea36 100644
--- a/wifi/1.2/default/tests/mock_wifi_mode_controller.cpp
+++ b/wifi/1.3/default/tests/mock_wifi_mode_controller.cpp
@@ -24,14 +24,14 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 namespace mode_controller {
 
 MockWifiModeController::MockWifiModeController() : WifiModeController() {}
 }  // namespace mode_controller
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/tests/mock_wifi_mode_controller.h b/wifi/1.3/default/tests/mock_wifi_mode_controller.h
similarity index 97%
rename from wifi/1.2/default/tests/mock_wifi_mode_controller.h
rename to wifi/1.3/default/tests/mock_wifi_mode_controller.h
index 50c3e35..c204059 100644
--- a/wifi/1.2/default/tests/mock_wifi_mode_controller.h
+++ b/wifi/1.3/default/tests/mock_wifi_mode_controller.h
@@ -24,7 +24,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 namespace mode_controller {
 
@@ -38,7 +38,7 @@
 };
 }  // namespace mode_controller
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/tests/ringbuffer_unit_tests.cpp b/wifi/1.3/default/tests/ringbuffer_unit_tests.cpp
similarity index 98%
rename from wifi/1.2/default/tests/ringbuffer_unit_tests.cpp
rename to wifi/1.3/default/tests/ringbuffer_unit_tests.cpp
index ad5289b..0cf1e4f 100644
--- a/wifi/1.2/default/tests/ringbuffer_unit_tests.cpp
+++ b/wifi/1.3/default/tests/ringbuffer_unit_tests.cpp
@@ -24,7 +24,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 
 class RingbufferTest : public Test {
@@ -91,7 +91,7 @@
     EXPECT_EQ(input, buffer_.getData().front());
 }
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.3/default/tests/runtests.sh b/wifi/1.3/default/tests/runtests.sh
new file mode 100755
index 0000000..6bce3ef
--- /dev/null
+++ b/wifi/1.3/default/tests/runtests.sh
@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+
+# 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.
+
+if [ -z $ANDROID_BUILD_TOP ]; then
+  echo "You need to source and lunch before you can use this script"
+  exit 1
+fi
+set -e
+
+$ANDROID_BUILD_TOP/build/soong/soong_ui.bash --make-mode android.hardware.wifi@1.0-service-tests
+adb root
+adb sync data
+adb shell /data/nativetest64/vendor/android.hardware.wifi@1.0-service-tests/android.hardware.wifi@1.0-service-tests
diff --git a/wifi/1.2/default/tests/wifi_chip_unit_tests.cpp b/wifi/1.3/default/tests/wifi_chip_unit_tests.cpp
similarity index 96%
rename from wifi/1.2/default/tests/wifi_chip_unit_tests.cpp
rename to wifi/1.3/default/tests/wifi_chip_unit_tests.cpp
index 8722d0a..2d9050d 100644
--- a/wifi/1.2/default/tests/wifi_chip_unit_tests.cpp
+++ b/wifi/1.3/default/tests/wifi_chip_unit_tests.cpp
@@ -38,7 +38,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 
 class WifiChipTest : public Test {
@@ -542,38 +542,38 @@
 
 ////////// V1 Iface Combinations when AP creation is disabled //////////
 class WifiChipV1_AwareDisabledApIfaceCombinationTest : public WifiChipTest {
- public:
-  void SetUp() override {
-    setupV1_AwareDisabledApIfaceCombination();
-    WifiChipTest::SetUp();
-  }
+   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());
+    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();
-  }
+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());
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_TRUE(createIface(IfaceType::AP).empty());
 }
 
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/wifi.cpp b/wifi/1.3/default/wifi.cpp
similarity index 99%
rename from wifi/1.2/default/wifi.cpp
rename to wifi/1.3/default/wifi.cpp
index 79f921f..e3af1ea 100644
--- a/wifi/1.2/default/wifi.cpp
+++ b/wifi/1.3/default/wifi.cpp
@@ -28,7 +28,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 using hidl_return_util::validateAndCall;
 using hidl_return_util::validateAndCallWithLock;
@@ -206,7 +206,7 @@
     return createWifiStatus(WifiStatusCode::SUCCESS);
 }
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/wifi.h b/wifi/1.3/default/wifi.h
similarity index 96%
rename from wifi/1.2/default/wifi.h
rename to wifi/1.3/default/wifi.h
index 86919b1..e921424 100644
--- a/wifi/1.2/default/wifi.h
+++ b/wifi/1.3/default/wifi.h
@@ -20,7 +20,7 @@
 #include <functional>
 
 #include <android-base/macros.h>
-#include <android/hardware/wifi/1.2/IWifi.h>
+#include <android/hardware/wifi/1.3/IWifi.h>
 #include <utils/Looper.h>
 
 #include "hidl_callback_util.h"
@@ -32,13 +32,13 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 
 /**
  * Root HIDL interface object used to control the Wifi HAL.
  */
-class Wifi : public V1_2::IWifi {
+class Wifi : public V1_3::IWifi {
    public:
     Wifi(const std::shared_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
          const std::shared_ptr<mode_controller::WifiModeController>
@@ -88,7 +88,7 @@
 };
 
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/wifi_ap_iface.cpp b/wifi/1.3/default/wifi_ap_iface.cpp
similarity index 98%
rename from wifi/1.2/default/wifi_ap_iface.cpp
rename to wifi/1.3/default/wifi_ap_iface.cpp
index 92b7b48..c203e47 100644
--- a/wifi/1.2/default/wifi_ap_iface.cpp
+++ b/wifi/1.3/default/wifi_ap_iface.cpp
@@ -24,7 +24,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 using hidl_return_util::validateAndCall;
 
@@ -93,7 +93,7 @@
     return {createWifiStatusFromLegacyError(legacy_status), valid_frequencies};
 }
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/wifi_ap_iface.h b/wifi/1.3/default/wifi_ap_iface.h
similarity index 98%
rename from wifi/1.2/default/wifi_ap_iface.h
rename to wifi/1.3/default/wifi_ap_iface.h
index 5363ec2..9f3d870 100644
--- a/wifi/1.2/default/wifi_ap_iface.h
+++ b/wifi/1.3/default/wifi_ap_iface.h
@@ -25,7 +25,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 using namespace android::hardware::wifi::V1_0;
 
@@ -65,7 +65,7 @@
 };
 
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/wifi_chip.cpp b/wifi/1.3/default/wifi_chip.cpp
similarity index 97%
rename from wifi/1.2/default/wifi_chip.cpp
rename to wifi/1.3/default/wifi_chip.cpp
index 3bd0557..cf64e51 100644
--- a/wifi/1.2/default/wifi_chip.cpp
+++ b/wifi/1.3/default/wifi_chip.cpp
@@ -28,13 +28,13 @@
 #include "wifi_status_util.h"
 
 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;
-using android::sp;
 
 constexpr ChipModeId kInvalidModeId = UINT32_MAX;
 // These mode ID's should be unique (even across combo versions). Refer to
@@ -111,16 +111,16 @@
 bool removeOldFilesInternal() {
     time_t now = time(0);
     const time_t delete_files_before = now - kMaxRingBufferFileAgeSeconds;
-    DIR* dir_dump = opendir(kTombstoneFolderPath);
+    std::unique_ptr<DIR, decltype(&closedir)> dir_dump(
+        opendir(kTombstoneFolderPath), closedir);
     if (!dir_dump) {
         LOG(ERROR) << "Failed to open directory: " << strerror(errno);
         return false;
     }
-    unique_fd dir_auto_closer(dirfd(dir_dump));
     struct dirent* dp;
     bool success = true;
     std::list<std::pair<const time_t, std::string>> valid_files;
-    while ((dp = readdir(dir_dump))) {
+    while ((dp = readdir(dir_dump.get()))) {
         if (dp->d_type != DT_REG) {
             continue;
         }
@@ -246,13 +246,13 @@
 size_t cpioArchiveFilesInDir(int out_fd, const char* input_dir) {
     struct dirent* dp;
     size_t n_error = 0;
-    DIR* dir_dump = opendir(input_dir);
+    std::unique_ptr<DIR, decltype(&closedir)> dir_dump(opendir(input_dir),
+                                                       closedir);
     if (!dir_dump) {
         LOG(ERROR) << "Failed to open directory: " << strerror(errno);
         return ++n_error;
     }
-    unique_fd dir_auto_closer(dirfd(dir_dump));
-    while ((dp = readdir(dir_dump))) {
+    while ((dp = readdir(dir_dump.get()))) {
         if (dp->d_type != DT_REG) {
             continue;
         }
@@ -304,7 +304,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 using hidl_return_util::validateAndCall;
 using hidl_return_util::validateAndCallWithLock;
@@ -335,7 +335,7 @@
 
 bool WifiChip::isValid() { return is_valid_; }
 
-std::set<sp<IWifiChipEventCallback>> WifiChip::getEventCallbacks() {
+std::set<sp<V1_2::IWifiChipEventCallback>> WifiChip::getEventCallbacks() {
     return event_cb_handler_.getCallbacks();
 }
 
@@ -344,6 +344,7 @@
                            &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) {
@@ -546,7 +547,8 @@
 }
 
 Return<void> WifiChip::selectTxPowerScenario(
-    V1_1::IWifiChip::TxPowerScenario scenario, selectTxPowerScenario_cb hidl_status_cb) {
+    V1_1::IWifiChip::TxPowerScenario scenario,
+    selectTxPowerScenario_cb hidl_status_cb) {
     return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
                            &WifiChip::selectTxPowerScenarioInternal,
                            hidl_status_cb, scenario);
@@ -560,7 +562,7 @@
 }
 
 Return<void> WifiChip::registerEventCallback_1_2(
-    const sp<IWifiChipEventCallback>& event_callback,
+    const sp<V1_2::IWifiChipEventCallback>& event_callback,
     registerEventCallback_cb hidl_status_cb) {
     return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
                            &WifiChip::registerEventCallbackInternal_1_2,
@@ -568,9 +570,10 @@
 }
 
 Return<void> WifiChip::selectTxPowerScenario_1_2(
-        TxPowerScenario scenario, selectTxPowerScenario_cb hidl_status_cb) {
+    TxPowerScenario scenario, selectTxPowerScenario_cb hidl_status_cb) {
     return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-            &WifiChip::selectTxPowerScenarioInternal_1_2, hidl_status_cb, scenario);
+                           &WifiChip::selectTxPowerScenarioInternal_1_2,
+                           hidl_status_cb, scenario);
 }
 
 Return<void> WifiChip::debug(const hidl_handle& handle,
@@ -1036,7 +1039,7 @@
 }
 
 WifiStatus WifiChip::selectTxPowerScenarioInternal(
-        V1_1::IWifiChip::TxPowerScenario scenario) {
+    V1_1::IWifiChip::TxPowerScenario scenario) {
     auto legacy_status = legacy_hal_.lock()->selectTxPowerScenario(
         getWlan0IfaceName(),
         hidl_struct_util::convertHidlTxPowerScenarioToLegacy(scenario));
@@ -1050,14 +1053,15 @@
 }
 
 WifiStatus WifiChip::registerEventCallbackInternal_1_2(
-    const sp<IWifiChipEventCallback>& event_callback) {
+    const sp<V1_2::IWifiChipEventCallback>& event_callback) {
     if (!event_cb_handler_.addCallback(event_callback)) {
         return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
     }
     return createWifiStatus(WifiStatusCode::SUCCESS);
 }
 
-WifiStatus WifiChip::selectTxPowerScenarioInternal_1_2(TxPowerScenario scenario) {
+WifiStatus WifiChip::selectTxPowerScenarioInternal_1_2(
+    TxPowerScenario scenario) {
     auto legacy_status = legacy_hal_.lock()->selectTxPowerScenario(
         getWlan0IfaceName(),
         hidl_struct_util::convertHidlTxPowerScenarioToLegacy_1_2(scenario));
@@ -1156,7 +1160,7 @@
                 LOG(ERROR) << "Callback invoked on an invalid object";
                 return;
             }
-            std::vector<IWifiChipEventCallback::RadioModeInfo>
+            std::vector<V1_2::IWifiChipEventCallback::RadioModeInfo>
                 hidl_radio_mode_infos;
             if (!hidl_struct_util::convertLegacyWifiMacInfosToHidl(
                     mac_infos, &hidl_radio_mode_infos)) {
@@ -1212,15 +1216,14 @@
         const IWifiChip::ChipIfaceCombination chip_iface_combination_2 = {
             {chip_iface_combination_limit_1, chip_iface_combination_limit_3}};
         if (feature_flags_.lock()->isApDisabled()) {
-          const IWifiChip::ChipMode chip_mode = {
-              kV2ChipModeId,
-              {chip_iface_combination_2}};
-          modes_ = {chip_mode};
+            const IWifiChip::ChipMode chip_mode = {kV2ChipModeId,
+                                                   {chip_iface_combination_2}};
+            modes_ = {chip_mode};
         } else {
-          const IWifiChip::ChipMode chip_mode = {
-            kV2ChipModeId,
-            {chip_iface_combination_1, chip_iface_combination_2}};
-          modes_ = {chip_mode};
+            const IWifiChip::ChipMode chip_mode = {
+                kV2ChipModeId,
+                {chip_iface_combination_1, chip_iface_combination_2}};
+            modes_ = {chip_mode};
         }
     } else {
         // V1 Iface combinations for Mode Id = 0. (STA Mode)
@@ -1246,9 +1249,9 @@
         const IWifiChip::ChipMode ap_chip_mode = {kV1ApChipModeId,
                                                   {ap_chip_iface_combination}};
         if (feature_flags_.lock()->isApDisabled()) {
-          modes_ = {sta_chip_mode};
+            modes_ = {sta_chip_mode};
         } else {
-          modes_ = {sta_chip_mode, ap_chip_mode};
+            modes_ = {sta_chip_mode, ap_chip_mode};
         }
     }
 }
@@ -1415,7 +1418,7 @@
 }
 
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/wifi_chip.h b/wifi/1.3/default/wifi_chip.h
similarity index 95%
rename from wifi/1.2/default/wifi_chip.h
rename to wifi/1.3/default/wifi_chip.h
index ada9458..ba60a8e 100644
--- a/wifi/1.2/default/wifi_chip.h
+++ b/wifi/1.3/default/wifi_chip.h
@@ -37,7 +37,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 using namespace android::hardware::wifi::V1_0;
 
@@ -69,10 +69,11 @@
     // marked valid before processing them.
     void invalidate();
     bool isValid();
-    std::set<sp<IWifiChipEventCallback>> getEventCallbacks();
+    std::set<sp<V1_2::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;
@@ -137,18 +138,20 @@
     Return<void> resetTxPowerScenario(
         resetTxPowerScenario_cb hidl_status_cb) override;
     Return<void> registerEventCallback_1_2(
-        const sp<IWifiChipEventCallback>& event_callback,
+        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> debug(const hidl_handle& handle,
                        const hidl_vec<hidl_string>& options) override;
+
    private:
     void invalidateAndRemoveAllIfaces();
 
     // 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();
@@ -195,10 +198,11 @@
     std::pair<WifiStatus, WifiDebugHostWakeReasonStats>
     getDebugHostWakeReasonStatsInternal();
     WifiStatus enableDebugErrorAlertsInternal(bool enable);
-    WifiStatus selectTxPowerScenarioInternal(V1_1::IWifiChip::TxPowerScenario scenario);
+    WifiStatus selectTxPowerScenarioInternal(
+        V1_1::IWifiChip::TxPowerScenario scenario);
     WifiStatus resetTxPowerScenarioInternal();
     WifiStatus registerEventCallbackInternal_1_2(
-        const sp<IWifiChipEventCallback>& event_callback);
+        const sp<V1_2::IWifiChipEventCallback>& event_callback);
     WifiStatus selectTxPowerScenarioInternal_1_2(TxPowerScenario scenario);
     WifiStatus handleChipConfiguration(
         std::unique_lock<std::recursive_mutex>* lock, ChipModeId mode_id);
@@ -236,14 +240,14 @@
     // registration mechanism. Use this to check if we have already
     // registered a callback.
     bool debug_ring_buffer_cb_registered_;
-    hidl_callback_util::HidlCallbackHandler<IWifiChipEventCallback>
+    hidl_callback_util::HidlCallbackHandler<V1_2::IWifiChipEventCallback>
         event_cb_handler_;
 
     DISALLOW_COPY_AND_ASSIGN(WifiChip);
 };
 
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/wifi_feature_flags.cpp b/wifi/1.3/default/wifi_feature_flags.cpp
similarity index 93%
rename from wifi/1.2/default/wifi_feature_flags.cpp
rename to wifi/1.3/default/wifi_feature_flags.cpp
index 778944d..8d48c36 100644
--- a/wifi/1.2/default/wifi_feature_flags.cpp
+++ b/wifi/1.3/default/wifi_feature_flags.cpp
@@ -38,7 +38,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 namespace feature_flags {
 
@@ -47,13 +47,11 @@
 bool WifiFeatureFlags::isDualInterfaceSupported() {
     return wifiHidlFeatureDualInterface;
 }
-bool WifiFeatureFlags::isApDisabled() {
-  return wifiHidlFeatureDisableAp;
-}
+bool WifiFeatureFlags::isApDisabled() { return wifiHidlFeatureDisableAp; }
 
 }  // namespace feature_flags
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/wifi_feature_flags.h b/wifi/1.3/default/wifi_feature_flags.h
similarity index 96%
rename from wifi/1.2/default/wifi_feature_flags.h
rename to wifi/1.3/default/wifi_feature_flags.h
index 4a7b2d2..ce74e23 100644
--- a/wifi/1.2/default/wifi_feature_flags.h
+++ b/wifi/1.3/default/wifi_feature_flags.h
@@ -20,7 +20,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 namespace feature_flags {
 
@@ -36,7 +36,7 @@
 
 }  // namespace feature_flags
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/wifi_legacy_hal.cpp b/wifi/1.3/default/wifi_legacy_hal.cpp
similarity index 99%
rename from wifi/1.2/default/wifi_legacy_hal.cpp
rename to wifi/1.3/default/wifi_legacy_hal.cpp
index 375204c..817c860 100644
--- a/wifi/1.2/default/wifi_legacy_hal.cpp
+++ b/wifi/1.3/default/wifi_legacy_hal.cpp
@@ -18,6 +18,7 @@
 #include <chrono>
 
 #include <android-base/logging.h>
+#include <cutils/properties.h>
 
 #include "hidl_sync_util.h"
 #include "wifi_legacy_hal.h"
@@ -35,6 +36,7 @@
 static constexpr uint32_t kMaxWakeReasonStatsArraySize = 32;
 static constexpr uint32_t kMaxRingBuffers = 10;
 static constexpr uint32_t kMaxStopCompleteWaitMs = 100;
+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) {
@@ -48,7 +50,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 namespace legacy_hal {
 // Legacy HAL functions accept "C" style function pointers, so use global
@@ -366,6 +368,8 @@
         LOG(ERROR) << "Timed out awaiting driver ready";
         return status;
     }
+    property_set(kDriverPropName, "ok");
+
     LOG(DEBUG) << "Starting legacy HAL";
     if (!iface_tool_.SetWifiUpState(true)) {
         LOG(ERROR) << "Failed to set WiFi interface up";
@@ -1417,7 +1421,7 @@
 
 }  // namespace legacy_hal
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/wifi_legacy_hal.h b/wifi/1.3/default/wifi_legacy_hal.h
similarity index 98%
rename from wifi/1.2/default/wifi_legacy_hal.h
rename to wifi/1.3/default/wifi_legacy_hal.h
index 00dfeef..af654fa 100644
--- a/wifi/1.2/default/wifi_legacy_hal.h
+++ b/wifi/1.3/default/wifi_legacy_hal.h
@@ -27,14 +27,15 @@
 
 // HACK: The include inside the namespace below also transitively includes a
 // bunch of libc headers into the namespace, which leads to functions like
-// socketpair being defined in android::hardware::wifi::V1_1::implementation::legacy_hal.
-// Include this one particular header as a hacky workaround until that's fixed.
+// socketpair being defined in
+// android::hardware::wifi::V1_1::implementation::legacy_hal. Include this one
+// particular header as a hacky workaround until that's fixed.
 #include <sys/socket.h>
 
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 // This is in a separate namespace to prevent typename conflicts between
 // the legacy HAL types and the HIDL interface types.
@@ -106,7 +107,8 @@
         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;
+    std::function<void(const NanDataPathScheduleUpdateInd&)>
+        on_event_schedule_update;
 };
 
 // Full scan results contain IE info and are hence passed by reference, to
@@ -389,7 +391,7 @@
 
 }  // namespace legacy_hal
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/wifi_legacy_hal_stubs.cpp b/wifi/1.3/default/wifi_legacy_hal_stubs.cpp
similarity index 99%
rename from wifi/1.2/default/wifi_legacy_hal_stubs.cpp
rename to wifi/1.3/default/wifi_legacy_hal_stubs.cpp
index fc28bb5..942df2a 100644
--- a/wifi/1.2/default/wifi_legacy_hal_stubs.cpp
+++ b/wifi/1.3/default/wifi_legacy_hal_stubs.cpp
@@ -20,7 +20,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 namespace legacy_hal {
 template <typename>
@@ -141,7 +141,7 @@
 }
 }  // namespace legacy_hal
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/wifi_legacy_hal_stubs.h b/wifi/1.3/default/wifi_legacy_hal_stubs.h
similarity index 96%
rename from wifi/1.2/default/wifi_legacy_hal_stubs.h
rename to wifi/1.3/default/wifi_legacy_hal_stubs.h
index d560dd4..64854e0 100644
--- a/wifi/1.2/default/wifi_legacy_hal_stubs.h
+++ b/wifi/1.3/default/wifi_legacy_hal_stubs.h
@@ -20,7 +20,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 namespace legacy_hal {
 #include <hardware_legacy/wifi_hal.h>
@@ -28,7 +28,7 @@
 bool initHalFuncTableWithStubs(wifi_hal_fn* hal_fn);
 }  // namespace legacy_hal
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/wifi_mode_controller.cpp b/wifi/1.3/default/wifi_mode_controller.cpp
similarity index 98%
rename from wifi/1.2/default/wifi_mode_controller.cpp
rename to wifi/1.3/default/wifi_mode_controller.cpp
index c286d24..c392486 100644
--- a/wifi/1.2/default/wifi_mode_controller.cpp
+++ b/wifi/1.3/default/wifi_mode_controller.cpp
@@ -48,7 +48,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 namespace mode_controller {
 
@@ -85,7 +85,7 @@
 }
 }  // namespace mode_controller
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/wifi_mode_controller.h b/wifi/1.3/default/wifi_mode_controller.h
similarity index 97%
rename from wifi/1.2/default/wifi_mode_controller.h
rename to wifi/1.3/default/wifi_mode_controller.h
index 395aa5d..ace5a52 100644
--- a/wifi/1.2/default/wifi_mode_controller.h
+++ b/wifi/1.3/default/wifi_mode_controller.h
@@ -24,7 +24,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 namespace mode_controller {
 using namespace android::hardware::wifi::V1_0;
@@ -55,7 +55,7 @@
 
 }  // namespace mode_controller
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/wifi_nan_iface.cpp b/wifi/1.3/default/wifi_nan_iface.cpp
similarity index 98%
rename from wifi/1.2/default/wifi_nan_iface.cpp
rename to wifi/1.3/default/wifi_nan_iface.cpp
index 566d36e..4325f44 100644
--- a/wifi/1.2/default/wifi_nan_iface.cpp
+++ b/wifi/1.3/default/wifi_nan_iface.cpp
@@ -24,7 +24,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 using hidl_return_util::validateAndCall;
 
@@ -420,7 +420,7 @@
                 LOG(ERROR) << "Callback invoked on an invalid object";
                 return;
             }
-            NanDataPathConfirmInd hidl_struct;
+            V1_2::NanDataPathConfirmInd hidl_struct;
             if (!hidl_struct_util::convertLegacyNanDataPathConfirmIndToHidl(
                     msg, &hidl_struct)) {
                 LOG(ERROR) << "Failed to convert nan capabilities response";
@@ -477,7 +477,7 @@
             LOG(ERROR) << "Callback invoked on an invalid object";
             return;
         }
-        NanDataPathScheduleUpdateInd hidl_struct;
+        V1_2::NanDataPathScheduleUpdateInd hidl_struct;
         if (!hidl_struct_util::convertLegacyNanDataPathScheduleUpdateIndToHidl(
                 msg, &hidl_struct)) {
             LOG(ERROR) << "Failed to convert nan capabilities response";
@@ -655,7 +655,7 @@
 }
 
 Return<void> WifiNanIface::registerEventCallback_1_2(
-    const sp<IWifiNanIfaceEventCallback>& callback,
+    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,
@@ -664,7 +664,7 @@
 
 Return<void> WifiNanIface::enableRequest_1_2(
     uint16_t cmd_id, const NanEnableRequest& msg1,
-    const NanConfigRequestSupplemental& msg2,
+    const V1_2::NanConfigRequestSupplemental& msg2,
     enableRequest_1_2_cb hidl_status_cb) {
     return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
                            &WifiNanIface::enableRequest_1_2Internal,
@@ -673,7 +673,7 @@
 
 Return<void> WifiNanIface::configRequest_1_2(
     uint16_t cmd_id, const NanConfigRequest& msg1,
-    const NanConfigRequestSupplemental& msg2,
+    const V1_2::NanConfigRequestSupplemental& msg2,
     configRequest_1_2_cb hidl_status_cb) {
     return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
                            &WifiNanIface::configRequest_1_2Internal,
@@ -832,7 +832,7 @@
 
 WifiStatus WifiNanIface::enableRequest_1_2Internal(
     uint16_t cmd_id, const NanEnableRequest& msg1,
-    const NanConfigRequestSupplemental& msg2) {
+    const V1_2::NanConfigRequestSupplemental& msg2) {
     legacy_hal::NanEnableRequest legacy_msg;
     if (!hidl_struct_util::convertHidlNanEnableRequest_1_2ToLegacy(
             msg1, msg2, &legacy_msg)) {
@@ -845,7 +845,7 @@
 
 WifiStatus WifiNanIface::configRequest_1_2Internal(
     uint16_t cmd_id, const NanConfigRequest& msg1,
-    const NanConfigRequestSupplemental& msg2) {
+    const V1_2::NanConfigRequestSupplemental& msg2) {
     legacy_hal::NanConfigRequest legacy_msg;
     if (!hidl_struct_util::convertHidlNanConfigRequest_1_2ToLegacy(
             msg1, msg2, &legacy_msg)) {
@@ -857,7 +857,7 @@
 }
 
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/wifi_nan_iface.h b/wifi/1.3/default/wifi_nan_iface.h
similarity index 95%
rename from wifi/1.2/default/wifi_nan_iface.h
rename to wifi/1.3/default/wifi_nan_iface.h
index dba527b..f735d61 100644
--- a/wifi/1.2/default/wifi_nan_iface.h
+++ b/wifi/1.3/default/wifi_nan_iface.h
@@ -27,7 +27,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 using namespace android::hardware::wifi::V1_0;
 
@@ -89,15 +89,15 @@
         terminateDataPathRequest_cb hidl_status_cb) override;
 
     Return<void> registerEventCallback_1_2(
-        const sp<IWifiNanIfaceEventCallback>& callback,
+        const sp<V1_2::IWifiNanIfaceEventCallback>& callback,
         registerEventCallback_1_2_cb hidl_status_cb) override;
     Return<void> enableRequest_1_2(
         uint16_t cmd_id, const NanEnableRequest& msg1,
-        const NanConfigRequestSupplemental& msg2,
+        const V1_2::NanConfigRequestSupplemental& msg2,
         enableRequest_1_2_cb hidl_status_cb) override;
     Return<void> configRequest_1_2(
         uint16_t cmd_id, const NanConfigRequest& msg1,
-        const NanConfigRequestSupplemental& msg2,
+        const V1_2::NanConfigRequestSupplemental& msg2,
         configRequest_1_2_cb hidl_status_cb) override;
 
    private:
@@ -135,10 +135,10 @@
         const sp<V1_2::IWifiNanIfaceEventCallback>& callback);
     WifiStatus enableRequest_1_2Internal(
         uint16_t cmd_id, const NanEnableRequest& msg1,
-        const NanConfigRequestSupplemental& msg2);
+        const V1_2::NanConfigRequestSupplemental& msg2);
     WifiStatus configRequest_1_2Internal(
         uint16_t cmd_id, const NanConfigRequest& msg,
-        const NanConfigRequestSupplemental& msg2);
+        const V1_2::NanConfigRequestSupplemental& msg2);
 
     // all 1_0 and descendant callbacks
     std::set<sp<V1_0::IWifiNanIfaceEventCallback>> getEventCallbacks();
@@ -157,7 +157,7 @@
 };
 
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/wifi_p2p_iface.cpp b/wifi/1.3/default/wifi_p2p_iface.cpp
similarity index 97%
rename from wifi/1.2/default/wifi_p2p_iface.cpp
rename to wifi/1.3/default/wifi_p2p_iface.cpp
index 92bbaee..b5d5886 100644
--- a/wifi/1.2/default/wifi_p2p_iface.cpp
+++ b/wifi/1.3/default/wifi_p2p_iface.cpp
@@ -23,7 +23,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 using hidl_return_util::validateAndCall;
 
@@ -60,7 +60,7 @@
 }
 
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/wifi_p2p_iface.h b/wifi/1.3/default/wifi_p2p_iface.h
similarity index 97%
rename from wifi/1.2/default/wifi_p2p_iface.h
rename to wifi/1.3/default/wifi_p2p_iface.h
index 76120b1..8a7207a 100644
--- a/wifi/1.2/default/wifi_p2p_iface.h
+++ b/wifi/1.3/default/wifi_p2p_iface.h
@@ -25,7 +25,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 using namespace android::hardware::wifi::V1_0;
 
@@ -58,7 +58,7 @@
 };
 
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/wifi_rtt_controller.cpp b/wifi/1.3/default/wifi_rtt_controller.cpp
similarity index 99%
rename from wifi/1.2/default/wifi_rtt_controller.cpp
rename to wifi/1.3/default/wifi_rtt_controller.cpp
index b68445b..fa317e3 100644
--- a/wifi/1.2/default/wifi_rtt_controller.cpp
+++ b/wifi/1.3/default/wifi_rtt_controller.cpp
@@ -24,7 +24,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 using hidl_return_util::validateAndCall;
 
@@ -269,7 +269,7 @@
     return createWifiStatusFromLegacyError(legacy_status);
 }
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/wifi_rtt_controller.h b/wifi/1.3/default/wifi_rtt_controller.h
similarity index 98%
rename from wifi/1.2/default/wifi_rtt_controller.h
rename to wifi/1.3/default/wifi_rtt_controller.h
index 1ab01e1..9798b79 100644
--- a/wifi/1.2/default/wifi_rtt_controller.h
+++ b/wifi/1.3/default/wifi_rtt_controller.h
@@ -27,7 +27,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 
 /**
@@ -97,7 +97,7 @@
 };
 
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/wifi_sta_iface.cpp b/wifi/1.3/default/wifi_sta_iface.cpp
similarity index 99%
rename from wifi/1.2/default/wifi_sta_iface.cpp
rename to wifi/1.3/default/wifi_sta_iface.cpp
index daa5610..63341df 100644
--- a/wifi/1.2/default/wifi_sta_iface.cpp
+++ b/wifi/1.3/default/wifi_sta_iface.cpp
@@ -24,7 +24,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 using hidl_return_util::validateAndCall;
 
@@ -622,7 +622,7 @@
 }
 
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/wifi_sta_iface.h b/wifi/1.3/default/wifi_sta_iface.h
similarity index 99%
rename from wifi/1.2/default/wifi_sta_iface.h
rename to wifi/1.3/default/wifi_sta_iface.h
index 71cd17d..0fc61e2 100644
--- a/wifi/1.2/default/wifi_sta_iface.h
+++ b/wifi/1.3/default/wifi_sta_iface.h
@@ -29,7 +29,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 using namespace android::hardware::wifi::V1_0;
 
@@ -163,7 +163,7 @@
 };
 
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/wifi_status_util.cpp b/wifi/1.3/default/wifi_status_util.cpp
similarity index 98%
rename from wifi/1.2/default/wifi_status_util.cpp
rename to wifi/1.3/default/wifi_status_util.cpp
index dd37b6b..0a5bb13 100644
--- a/wifi/1.2/default/wifi_status_util.cpp
+++ b/wifi/1.3/default/wifi_status_util.cpp
@@ -19,7 +19,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 
 std::string legacyErrorToString(legacy_hal::wifi_error error) {
@@ -100,7 +100,7 @@
 }
 
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/1.2/default/wifi_status_util.h b/wifi/1.3/default/wifi_status_util.h
similarity index 97%
rename from wifi/1.2/default/wifi_status_util.h
rename to wifi/1.3/default/wifi_status_util.h
index e9136b3..bc8baa9 100644
--- a/wifi/1.2/default/wifi_status_util.h
+++ b/wifi/1.3/default/wifi_status_util.h
@@ -24,7 +24,7 @@
 namespace android {
 namespace hardware {
 namespace wifi {
-namespace V1_2 {
+namespace V1_3 {
 namespace implementation {
 using namespace android::hardware::wifi::V1_0;
 
@@ -37,7 +37,7 @@
 WifiStatus createWifiStatusFromLegacyError(legacy_hal::wifi_error error);
 
 }  // namespace implementation
-}  // namespace V1_2
+}  // namespace V1_3
 }  // namespace wifi
 }  // namespace hardware
 }  // namespace android
diff --git a/wifi/hostapd/1.1/Android.bp b/wifi/hostapd/1.1/Android.bp
new file mode 100644
index 0000000..d4170b6
--- /dev/null
+++ b/wifi/hostapd/1.1/Android.bp
@@ -0,0 +1,20 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.wifi.hostapd@1.1",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "IHostapd.hal",
+        "IHostapdCallback.hal",
+    ],
+    interfaces: [
+        "android.hardware.wifi.hostapd@1.0",
+        "android.hardware.wifi.supplicant@1.0",
+        "android.hidl.base@1.0",
+    ],
+    gen_java: true,
+}
+
diff --git a/wifi/hostapd/1.1/IHostapd.hal b/wifi/hostapd/1.1/IHostapd.hal
new file mode 100644
index 0000000..4e59ffc
--- /dev/null
+++ b/wifi/hostapd/1.1/IHostapd.hal
@@ -0,0 +1,45 @@
+/*
+ * 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.
+ */
+
+package android.hardware.wifi.hostapd@1.1;
+
+import @1.0::IHostapd;
+import @1.0::HostapdStatus;
+
+import IHostapdCallback;
+
+/**
+ * Top-level object for managing SoftAPs.
+ */
+interface IHostapd extends @1.0::IHostapd {
+    /**
+     * Register for callbacks from the hostapd service.
+     *
+     * These callbacks are invoked for global events that are not specific
+     * to any interface or network. Registration of multiple callback
+     * objects is supported. These objects must be deleted when the corresponding
+     * client process is dead.
+     *
+     * @param callback An instance of the |IHostapdCallback| HIDL interface
+     *     object.
+     * @return status Status of the operation.
+     *     Possible status codes:
+     *     |HostapdStatusCode.SUCCESS|,
+     *     |HostapdStatusCode.FAILURE_UNKNOWN|
+     */
+    registerCallback(IHostapdCallback callback)
+        generates (HostapdStatus status);
+};
diff --git a/wifi/hostapd/1.1/IHostapdCallback.hal b/wifi/hostapd/1.1/IHostapdCallback.hal
new file mode 100644
index 0000000..1d314fe
--- /dev/null
+++ b/wifi/hostapd/1.1/IHostapdCallback.hal
@@ -0,0 +1,30 @@
+/*
+ * 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.
+ */
+
+package android.hardware.wifi.hostapd@1.1;
+
+/**
+ * Top-level object for managing SoftAPs.
+ */
+interface IHostapdCallback {
+    /**
+     * Invoked when an asynchronous failure is encountered in one of the access
+     * points added via |IHostapd.addAccessPoint|.
+     *
+     * @param ifaceName Name of the interface.
+     */
+    oneway onFailure(string ifaceName);
+};