diff --git a/automotive/can/1.0/default/Android.bp b/automotive/can/1.0/default/Android.bp
index c0c17e2..163fdb7 100644
--- a/automotive/can/1.0/default/Android.bp
+++ b/automotive/can/1.0/default/Android.bp
@@ -64,4 +64,5 @@
         "android.hardware.automotive@libc++fs",
         "libnl++",
     ],
+    vintf_fragments: ["manifest_android.hardware.automotive.can@1.0.xml"],
 }
diff --git a/automotive/can/1.0/default/manifest_android.hardware.automotive.can@1.0.xml b/automotive/can/1.0/default/manifest_android.hardware.automotive.can@1.0.xml
new file mode 100644
index 0000000..2078ce5
--- /dev/null
+++ b/automotive/can/1.0/default/manifest_android.hardware.automotive.can@1.0.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- Copyright (C) 2020 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<manifest version="1.0" type="device" >
+    <hal format="hidl">
+        <name>android.hardware.automotive.can</name>
+        <transport>hwbinder</transport>
+        <fqname>@1.0::ICanController/socketcan</fqname>
+    </hal>
+</manifest>
diff --git a/automotive/vehicle/aidl/aidl_api/android.hardware.automotive.vehicle/current/android/hardware/automotive/vehicle/VehicleProperty.aidl b/automotive/vehicle/aidl/aidl_api/android.hardware.automotive.vehicle/current/android/hardware/automotive/vehicle/VehicleProperty.aidl
index 3fc9353..12126ea 100644
--- a/automotive/vehicle/aidl/aidl_api/android.hardware.automotive.vehicle/current/android/hardware/automotive/vehicle/VehicleProperty.aidl
+++ b/automotive/vehicle/aidl/aidl_api/android.hardware.automotive.vehicle/current/android/hardware/automotive/vehicle/VehicleProperty.aidl
@@ -105,6 +105,7 @@
   EV_BATTERY_DISPLAY_UNITS = 289408515,
   FUEL_CONSUMPTION_UNITS_DISTANCE_OVER_VOLUME = 287311364,
   VEHICLE_SPEED_DISPLAY_UNITS = 289408517,
+  EXTERNAL_CAR_TIME = 290457096,
   ANDROID_EPOCH_TIME = 290457094,
   STORAGE_ENCRYPTION_BINDING_SEED = 292554247,
   ENV_OUTSIDE_TEMPERATURE = 291505923,
diff --git a/automotive/vehicle/aidl/android/hardware/automotive/vehicle/VehicleProperty.aidl b/automotive/vehicle/aidl/android/hardware/automotive/vehicle/VehicleProperty.aidl
index e3b5a38..fe2de8f 100644
--- a/automotive/vehicle/aidl/android/hardware/automotive/vehicle/VehicleProperty.aidl
+++ b/automotive/vehicle/aidl/android/hardware/automotive/vehicle/VehicleProperty.aidl
@@ -1035,6 +1035,51 @@
     VEHICLE_SPEED_DISPLAY_UNITS = 0x0605 + 0x10000000 + 0x01000000
             + 0x00400000, // VehiclePropertyGroup:SYSTEM,VehicleArea:GLOBAL,VehiclePropertyType:INT32
     /**
+     * Current date and time suggestion for the Car, encoded as Epoch time
+     * (in milliseconds). This value denotes the number of milliseconds seconds
+     * that have elapsed since 1/1/1970 UTC.
+     *
+     * This property signals a change in CarTime to Android. If the property is supported, VHAL
+     * must report the most accurate current CarTime when this property is read, and publish a
+     * change to this property when the CarTime value has changed. An on-change event for this
+     * property must be published when CarTime changes for any reason other than the natural elapse
+     * of time (time delta smaller than 500ms should not trigger an on change event). Android will
+     * read and subscribe to this property to fetch time from VHAL. This can be useful to
+     * synchronize Android's time with other vehicle systems (dash clock etc).
+     *     int64Values[0] = provided Epoch time (in milliseconds)
+     *
+     * Whenever a new Value for the property is received, AAOS will create
+     * and send an "ExternalTimeSuggestion" to the "TimeDetectorService".
+     * If other sources do not have a higher priority, Android will use this
+     * to set the system time. For information on how to adjust time source
+     * priorities and how time suggestions are handled (including how Android
+     * handles gitter, drift, and minimum resolution) see Time Detector Service
+     * documentation.
+     *
+     * Note that the property may take >0 ms to get propagated through the stack
+     * and, having a timestamped property helps reduce any time drift. So,
+     * for all reads to the property, the timestamp can be used to negate this
+     * drift:
+     *     drift = elapsedTime - PropValue.timestamp
+     *     effectiveTime = PropValue.value.int64Values[0] + drift
+     *
+     * It is strongly recommended that this property must not be used to retrieve
+     * time from ECUs using protocols (GNSS, NTP, Telephony etc). Since these
+     * protocols are already supported by Android, it is recommended to use
+     * Android’s own systems for them instead of wiring those through the VHAL
+     * using this property.
+     *
+     * WARNING: The value available through this property should not be dependent
+     * on value written by Android to ANDROID_EPOCH_TIME property in any way.
+     *
+     * @change_mode VehiclePropertyChangeMode:ON_CHANGE
+     * @access VehiclePropertyAccess:READ_ONLY
+     * @unit VehicleUnit:MILLI_SECS
+     */
+    EXTERNAL_CAR_TIME = 0x0608 + 0x10000000 // VehiclePropertyGroup:SYSTEM
+            + 0x01000000 // VehicleArea:GLOBAL
+            + 0x00500000, // VehiclePropertyType:INT64
+    /**
      * Current date and time, encoded as Epoch time (in milliseconds).
      * This value denotes the number of milliseconds seconds that have
      * elapsed since 1/1/1970 UTC.
diff --git a/automotive/vehicle/aidl/impl/fake_impl/hardware/Android.bp b/automotive/vehicle/aidl/impl/fake_impl/hardware/Android.bp
index d614c6b..29dec74 100644
--- a/automotive/vehicle/aidl/impl/fake_impl/hardware/Android.bp
+++ b/automotive/vehicle/aidl/impl/fake_impl/hardware/Android.bp
@@ -30,6 +30,12 @@
         "VehicleHalDefaultConfig",
     ],
     export_header_lib_headers: ["IVehicleHardware"],
-    static_libs: ["VehicleHalUtils"],
+    static_libs: [
+        "VehicleHalUtils",
+        "FakeVehicleHalValueGenerators",
+    ],
+    shared_libs: [
+        "libjsoncpp",
+    ],
     export_static_lib_headers: ["VehicleHalUtils"],
 }
diff --git a/automotive/vehicle/aidl/impl/fake_impl/hardware/include/FakeVehicleHardware.h b/automotive/vehicle/aidl/impl/fake_impl/hardware/include/FakeVehicleHardware.h
index dee36f4..ead8bb2 100644
--- a/automotive/vehicle/aidl/impl/fake_impl/hardware/include/FakeVehicleHardware.h
+++ b/automotive/vehicle/aidl/impl/fake_impl/hardware/include/FakeVehicleHardware.h
@@ -82,10 +82,8 @@
     void registerOnPropertySetErrorEvent(OnPropertySetErrorCallback&& callback) override;
 
   private:
-    void storePropInitialValue(const defaultconfig::ConfigDeclaration& config);
-    void init(std::shared_ptr<VehiclePropValuePool> valuePool);
-    void onValueChangeCallback(
-            const ::aidl::android::hardware::automotive::vehicle::VehiclePropValue& value);
+    // Expose private methods to unit test.
+    friend class FakeVehicleHardwareTestHelper;
 
     std::unique_ptr<VehiclePropertyStore> mServerSidePropStore;
     // mValuePool is also used in mServerSidePropStore.
@@ -93,6 +91,18 @@
     std::mutex mCallbackLock;
     OnPropertyChangeCallback mOnPropertyChangeCallback GUARDED_BY(mCallbackLock);
     OnPropertySetErrorCallback mOnPropertySetErrorCallback GUARDED_BY(mCallbackLock);
+
+    void init(std::shared_ptr<VehiclePropValuePool> valuePool);
+    // Stores the initial value to property store.
+    void storePropInitialValue(const defaultconfig::ConfigDeclaration& config);
+    // The callback that would be called when a vehicle property value change happens.
+    void onValueChangeCallback(
+            const ::aidl::android::hardware::automotive::vehicle::VehiclePropValue& value);
+    // If property "persist.vendor.vhal_init_value_override" is set to true, override the properties
+    // using config files in 'overrideDir'.
+    void maybeOverrideProperties(const char* overrideDir);
+    // Override the properties using config files in 'overrideDir'.
+    void overrideProperties(const char* overrideDir);
 };
 
 }  // namespace fake
diff --git a/automotive/vehicle/aidl/impl/fake_impl/hardware/src/FakeVehicleHardware.cpp b/automotive/vehicle/aidl/impl/fake_impl/hardware/src/FakeVehicleHardware.cpp
index f8bf7de..684b2a7 100644
--- a/automotive/vehicle/aidl/impl/fake_impl/hardware/src/FakeVehicleHardware.cpp
+++ b/automotive/vehicle/aidl/impl/fake_impl/hardware/src/FakeVehicleHardware.cpp
@@ -17,11 +17,17 @@
 #include "FakeVehicleHardware.h"
 
 #include <DefaultConfig.h>
+#include <JsonFakeValueGenerator.h>
 #include <VehicleHalTypes.h>
 #include <VehicleUtils.h>
+#include <android-base/properties.h>
 #include <utils/Log.h>
 #include <utils/SystemClock.h>
 
+#include <dirent.h>
+#include <sys/types.h>
+#include <fstream>
+#include <regex>
 #include <vector>
 
 namespace android {
@@ -30,6 +36,8 @@
 namespace vehicle {
 namespace fake {
 
+namespace {
+
 using ::aidl::android::hardware::automotive::vehicle::GetValueRequest;
 using ::aidl::android::hardware::automotive::vehicle::GetValueResult;
 using ::aidl::android::hardware::automotive::vehicle::RawPropValues;
@@ -40,6 +48,11 @@
 using ::aidl::android::hardware::automotive::vehicle::VehiclePropertyStatus;
 using ::aidl::android::hardware::automotive::vehicle::VehiclePropValue;
 
+const char* VENDOR_OVERRIDE_DIR = "/vendor/etc/automotive/vhaloverride/";
+const char* OVERRIDE_PROPERTY = "persist.vendor.vhal_init_value_override";
+
+}  // namespace
+
 void FakeVehicleHardware::storePropInitialValue(const defaultconfig::ConfigDeclaration& config) {
     const VehiclePropConfig& vehiclePropConfig = config.config;
     int propId = vehiclePropConfig.prop;
@@ -99,6 +112,8 @@
         storePropInitialValue(it);
     }
 
+    maybeOverrideProperties(VENDOR_OVERRIDE_DIR);
+
     mServerSidePropStore->setOnValueChangeCallback(
             [this](const VehiclePropValue& value) { return onValueChangeCallback(value); });
 }
@@ -201,6 +216,39 @@
     }
 }
 
+void FakeVehicleHardware::maybeOverrideProperties(const char* overrideDir) {
+    if (android::base::GetBoolProperty(OVERRIDE_PROPERTY, false)) {
+        overrideProperties(overrideDir);
+    }
+}
+
+void FakeVehicleHardware::overrideProperties(const char* overrideDir) {
+    ALOGI("loading vendor override properties from %s", overrideDir);
+    if (auto dir = opendir(overrideDir); dir != NULL) {
+        std::regex regJson(".*[.]json", std::regex::icase);
+        while (auto f = readdir(dir)) {
+            if (!std::regex_match(f->d_name, regJson)) {
+                continue;
+            }
+            std::string file = overrideDir + std::string(f->d_name);
+            JsonFakeValueGenerator tmpGenerator(file);
+
+            std::vector<VehiclePropValue> propValues = tmpGenerator.getAllEvents();
+            for (const VehiclePropValue& prop : propValues) {
+                auto propToStore = mValuePool->obtain(prop);
+                propToStore->timestamp = elapsedRealtimeNano();
+                if (auto result = mServerSidePropStore->writeValue(std::move(propToStore),
+                                                                   /*updateStatus=*/true);
+                    !result.ok()) {
+                    ALOGW("failed to write vendor override properties: %d, error: %s", prop.prop,
+                          result.error().message().c_str());
+                }
+            }
+        }
+        closedir(dir);
+    }
+}
+
 }  // namespace fake
 }  // namespace vehicle
 }  // namespace automotive
diff --git a/automotive/vehicle/aidl/impl/fake_impl/hardware/test/Android.bp b/automotive/vehicle/aidl/impl/fake_impl/hardware/test/Android.bp
index 9f76d09..21937b9 100644
--- a/automotive/vehicle/aidl/impl/fake_impl/hardware/test/Android.bp
+++ b/automotive/vehicle/aidl/impl/fake_impl/hardware/test/Android.bp
@@ -29,9 +29,21 @@
     static_libs: [
         "VehicleHalUtils",
         "FakeVehicleHardware",
+        "FakeVehicleHalValueGenerators",
         "libgtest",
         "libgmock",
     ],
+    shared_libs: [
+        "libjsoncpp",
+    ],
+    data: [
+        ":FakeVehicleHardwareTestOverrideJson",
+    ],
     defaults: ["VehicleHalDefaults"],
     test_suites: ["device-tests"],
 }
+
+filegroup {
+    name: "FakeVehicleHardwareTestOverrideJson",
+    srcs: ["override/*"],
+}
diff --git a/automotive/vehicle/aidl/impl/fake_impl/hardware/test/FakeVehicleHardwareTest.cpp b/automotive/vehicle/aidl/impl/fake_impl/hardware/test/FakeVehicleHardwareTest.cpp
index 53e647d..f915d69 100644
--- a/automotive/vehicle/aidl/impl/fake_impl/hardware/test/FakeVehicleHardwareTest.cpp
+++ b/automotive/vehicle/aidl/impl/fake_impl/hardware/test/FakeVehicleHardwareTest.cpp
@@ -16,16 +16,21 @@
 
 #include <DefaultConfig.h>
 #include <FakeVehicleHardware.h>
+
+#include <android-base/expected.h>
+#include <android-base/file.h>
 #include <gmock/gmock.h>
 #include <gtest/gtest.h>
+#include <utils/Log.h>
 #include <utils/SystemClock.h>
 
+#include <inttypes.h>
+
 namespace android {
 namespace hardware {
 namespace automotive {
 namespace vehicle {
 namespace fake {
-
 namespace {
 
 using ::aidl::android::hardware::automotive::vehicle::GetValueRequest;
@@ -38,6 +43,8 @@
 using ::aidl::android::hardware::automotive::vehicle::VehicleProperty;
 using ::aidl::android::hardware::automotive::vehicle::VehiclePropertyStatus;
 using ::aidl::android::hardware::automotive::vehicle::VehiclePropValue;
+using ::android::base::expected;
+using ::android::base::unexpected;
 using ::testing::ContainerEq;
 using ::testing::Eq;
 using ::testing::WhenSortedBy;
@@ -46,6 +53,17 @@
 
 }  // namespace
 
+// A helper class to access private methods for FakeVehicleHardware.
+class FakeVehicleHardwareTestHelper {
+  public:
+    FakeVehicleHardwareTestHelper(FakeVehicleHardware* hardware) { mHardware = hardware; }
+
+    void overrideProperties(const char* overrideDir) { mHardware->overrideProperties(overrideDir); }
+
+  private:
+    FakeVehicleHardware* mHardware;
+};
+
 class FakeVehicleHardwareTest : public ::testing::Test {
   protected:
     void SetUp() override {}
@@ -64,6 +82,63 @@
                 requests);
     }
 
+    StatusCode setValue(const VehiclePropValue& value) {
+        std::vector<SetValueRequest> requests = {
+                SetValueRequest{
+                        .requestId = 0,
+                        .value = value,
+                },
+        };
+
+        if (StatusCode status = setValues(requests); status != StatusCode::OK) {
+            return status;
+        }
+
+        const SetValueResult& result = getSetValueResults().back();
+
+        if (result.requestId != 0) {
+            ALOGE("request ID mismatch, got %" PRId64 ", expect 0", result.requestId);
+            return StatusCode::INTERNAL_ERROR;
+        }
+
+        return result.status;
+    }
+
+    expected<VehiclePropValue, StatusCode> getValue(const VehiclePropValue& value) {
+        std::vector<GetValueRequest> requests = {
+                GetValueRequest{
+                        .requestId = 0,
+                        .prop = value,
+                },
+        };
+
+        if (StatusCode status = getValues(requests); status != StatusCode::OK) {
+            return unexpected(status);
+        }
+
+        const GetValueResult& result = getGetValueResults().back();
+        if (result.requestId != 0) {
+            ALOGE("request ID mismatch, got %" PRId64 ", expect 0", result.requestId);
+            return unexpected(StatusCode::INTERNAL_ERROR);
+        }
+
+        if (result.status != StatusCode::OK) {
+            return unexpected(result.status);
+        }
+
+        if (!result.prop.has_value()) {
+            ALOGE("%s", "result property is empty");
+            return unexpected(StatusCode::INTERNAL_ERROR);
+        }
+
+        return result.prop.value();
+    }
+
+    template <class T>
+    int getStatus(expected<T, StatusCode> result) {
+        return toInt(result.error());
+    }
+
     void onSetValues(const std::vector<SetValueResult> results) {
         for (auto& result : results) {
             mSetValueResults.push_back(result);
@@ -424,6 +499,86 @@
     ASSERT_EQ(getGetValueResults()[1].prop->status, VehiclePropertyStatus::AVAILABLE);
 }
 
+TEST_F(FakeVehicleHardwareTest, testVendorOverrideProperties) {
+    std::string overrideDir = android::base::GetExecutableDirectory() + "/override/";
+    // Set vendor override directory.
+    FakeVehicleHardwareTestHelper helper(getHardware());
+    helper.overrideProperties(overrideDir.c_str());
+
+    // This is the same as the prop in 'gear_selection.json'.
+    int gearProp = toInt(VehicleProperty::GEAR_SELECTION);
+
+    auto result = getValue(VehiclePropValue{
+            .prop = gearProp,
+    });
+
+    ASSERT_TRUE(result.ok()) << "expect to get the overridden property ok: " << getStatus(result);
+    ASSERT_EQ(static_cast<size_t>(1), result.value().value.int32Values.size());
+    ASSERT_EQ(8, result.value().value.int32Values[0]);
+
+    // If we set the value, it should update despite the override.
+    ASSERT_EQ(setValue(VehiclePropValue{
+                      .prop = gearProp,
+                      .value =
+                              {
+                                      .int32Values = {5},
+                              },
+                      .timestamp = elapsedRealtimeNano(),
+              }),
+              StatusCode::OK)
+            << "expect to set the overridden property ok";
+
+    result = getValue(VehiclePropValue{
+            .prop = gearProp,
+    });
+
+    ASSERT_TRUE(result.ok()) << "expect to get the overridden property after setting value ok";
+    ASSERT_EQ(static_cast<size_t>(1), result.value().value.int32Values.size());
+    ASSERT_EQ(5, result.value().value.int32Values[0]);
+}
+
+TEST_F(FakeVehicleHardwareTest, testVendorOverridePropertiesMultipleAreas) {
+    std::string overrideDir = android::base::GetExecutableDirectory() + "/override/";
+    // Set vendor override directory.
+    FakeVehicleHardwareTestHelper helper(getHardware());
+    helper.overrideProperties(overrideDir.c_str());
+
+    // This is the same as the prop in 'hvac_temperature_set.json'.
+    int hvacProp = toInt(VehicleProperty::HVAC_TEMPERATURE_SET);
+
+    auto result = getValue(VehiclePropValue{
+            .prop = hvacProp,
+            .areaId = HVAC_LEFT,
+    });
+
+    ASSERT_TRUE(result.ok()) << "expect to get the overridden property ok: " << getStatus(result);
+    ASSERT_EQ(static_cast<size_t>(1), result.value().value.floatValues.size());
+    ASSERT_EQ(30.0f, result.value().value.floatValues[0]);
+
+    // HVAC_RIGHT should not be affected and return the default value.
+    result = getValue(VehiclePropValue{
+            .prop = hvacProp,
+            .areaId = HVAC_RIGHT,
+    });
+
+    ASSERT_TRUE(result.ok()) << "expect to get the default property ok: " << getStatus(result);
+    ASSERT_EQ(static_cast<size_t>(1), result.value().value.floatValues.size());
+    ASSERT_EQ(20.0f, result.value().value.floatValues[0]);
+}
+
+TEST_F(FakeVehicleHardwareTest, testVendorOverridePropertiesDirDoesNotExist) {
+    // Set vendor override directory to a non-existing dir
+    FakeVehicleHardwareTestHelper helper(getHardware());
+    helper.overrideProperties("123");
+    auto result = getValue(VehiclePropValue{
+            .prop = toInt(VehicleProperty::GEAR_SELECTION),
+    });
+
+    ASSERT_TRUE(result.ok()) << "expect to get the default property ok: " << getStatus(result);
+    ASSERT_EQ(static_cast<size_t>(1), result.value().value.int32Values.size());
+    ASSERT_EQ(4, result.value().value.int32Values[0]);
+}
+
 }  // namespace fake
 }  // namespace vehicle
 }  // namespace automotive
diff --git a/automotive/vehicle/aidl/impl/fake_impl/hardware/test/override/gear_selection.json b/automotive/vehicle/aidl/impl/fake_impl/hardware/test/override/gear_selection.json
new file mode 100644
index 0000000..59666b8
--- /dev/null
+++ b/automotive/vehicle/aidl/impl/fake_impl/hardware/test/override/gear_selection.json
@@ -0,0 +1,9 @@
+[
+  {
+    "timestamp": 1000000,
+    "areaId": 0,
+    "value": 8,
+    // GEAR_SELECTION
+    "prop": 289408000
+  }
+]
diff --git a/automotive/vehicle/aidl/impl/fake_impl/hardware/test/override/hvac_temperature_set.json b/automotive/vehicle/aidl/impl/fake_impl/hardware/test/override/hvac_temperature_set.json
new file mode 100644
index 0000000..93a97ed
--- /dev/null
+++ b/automotive/vehicle/aidl/impl/fake_impl/hardware/test/override/hvac_temperature_set.json
@@ -0,0 +1,10 @@
+[
+  {
+    "timestamp": 1000000,
+    // HVAC_LEFT
+    "areaId": 49,
+    "value": 30,
+    // HVAC_TEMPERATURE_SET
+    "prop": 358614275
+  }
+]
diff --git a/automotive/vehicle/aidl/impl/utils/common/include/VehicleUtils.h b/automotive/vehicle/aidl/impl/utils/common/include/VehicleUtils.h
index b02aaf7..95e58c6 100644
--- a/automotive/vehicle/aidl/impl/utils/common/include/VehicleUtils.h
+++ b/automotive/vehicle/aidl/impl/utils/common/include/VehicleUtils.h
@@ -130,10 +130,9 @@
         const ::aidl::android::hardware::automotive::vehicle::RawPropValues& value,
         ::aidl::android::hardware::automotive::vehicle::VehiclePropertyType type) {
     switch (type) {
-        case ::aidl::android::hardware::automotive::vehicle::VehiclePropertyType::INT32:  // fall
-                                                                                          // through
-        case ::aidl::android::hardware::automotive::vehicle::VehiclePropertyType::
-                BOOLEAN:  // fall through
+        case ::aidl::android::hardware::automotive::vehicle::VehiclePropertyType::INT32:
+            [[fallthrough]];
+        case ::aidl::android::hardware::automotive::vehicle::VehiclePropertyType::BOOLEAN:
             return std::min(value.int32Values.size(), static_cast<size_t>(1));
         case ::aidl::android::hardware::automotive::vehicle::VehiclePropertyType::FLOAT:
             return std::min(value.floatValues.size(), static_cast<size_t>(1));
@@ -147,6 +146,10 @@
             return value.int64Values.size();
         case ::aidl::android::hardware::automotive::vehicle::VehiclePropertyType::BYTES:
             return value.byteValues.size();
+        case ::aidl::android::hardware::automotive::vehicle::VehiclePropertyType::STRING:
+            [[fallthrough]];
+        case ::aidl::android::hardware::automotive::vehicle::VehiclePropertyType::MIXED:
+            return 0;
         default:
             ALOGE("getVehicleRawValueVectorSize: unknown type: %d", toInt(type));
             return 0;
diff --git a/automotive/vehicle/aidl/impl/utils/common/src/VehicleObjectPool.cpp b/automotive/vehicle/aidl/impl/utils/common/src/VehicleObjectPool.cpp
index 1cdc461..2480a73 100644
--- a/automotive/vehicle/aidl/impl/utils/common/src/VehicleObjectPool.cpp
+++ b/automotive/vehicle/aidl/impl/utils/common/src/VehicleObjectPool.cpp
@@ -52,17 +52,19 @@
 }
 
 VehiclePropValuePool::RecyclableType VehiclePropValuePool::obtain(const VehiclePropValue& src) {
-    VehiclePropertyType type = getPropType(src.prop);
+    int propId = src.prop;
+    VehiclePropertyType type = getPropType(propId);
     size_t vectorSize = getVehicleRawValueVectorSize(src.value, type);
     if (vectorSize == 0 && !isComplexType(type)) {
         ALOGW("empty vehicle prop value, contains no content");
+        ALOGW("empty vehicle prop value, contains no content, prop: %d", propId);
         // Return any empty VehiclePropValue.
-        return RecyclableType{new VehiclePropValue, mDisposableDeleter};
+        return RecyclableType{new VehiclePropValue{}, mDisposableDeleter};
     }
 
     auto dest = obtain(type, vectorSize);
 
-    dest->prop = src.prop;
+    dest->prop = propId;
     dest->areaId = src.areaId;
     dest->status = src.status;
     dest->timestamp = src.timestamp;
diff --git a/bluetooth/1.0/default/h4_protocol.cc b/bluetooth/1.0/default/h4_protocol.cc
index 43abbe4..33238da 100644
--- a/bluetooth/1.0/default/h4_protocol.cc
+++ b/bluetooth/1.0/default/h4_protocol.cc
@@ -30,21 +30,52 @@
 namespace hci {
 
 size_t H4Protocol::Send(uint8_t type, const uint8_t* data, size_t length) {
-  struct iovec iov[] = {{&type, sizeof(type)},
-                        {const_cast<uint8_t*>(data), length}};
-  ssize_t ret = 0;
-  do {
-    ret =
-        TEMP_FAILURE_RETRY(writev(uart_fd_, iov, sizeof(iov) / sizeof(iov[0])));
-  } while (-1 == ret && EAGAIN == errno);
-
-  if (ret == -1) {
-    ALOGE("%s error writing to UART (%s)", __func__, strerror(errno));
-  } else if (ret < static_cast<ssize_t>(length + 1)) {
-    ALOGE("%s: %d / %d bytes written - something went wrong...", __func__,
-          static_cast<int>(ret), static_cast<int>(length + 1));
+  struct iovec iov_array[] = {{&type, sizeof(type)},
+                              {const_cast<uint8_t*>(data), length}};
+  struct iovec* iov = iov_array;
+  int iovcnt = sizeof(iov_array) / sizeof(iov_array[0]);
+  size_t total_bytes = 0;
+  for (int i = 0; i < iovcnt; i++) {
+    total_bytes += iov_array[i].iov_len;
   }
-  return ret;
+  size_t bytes_written = 0;
+  size_t remaining_bytes = total_bytes;
+
+  while (remaining_bytes > 0) {
+    ssize_t ret = TEMP_FAILURE_RETRY(writev(uart_fd_, iov, iovcnt));
+    if (ret == -1) {
+      if (errno == EAGAIN) continue;
+      ALOGE("%s error writing to UART (%s)", __func__, strerror(errno));
+      break;
+    } else if (ret == 0) {
+      // Nothing written
+      ALOGE("%s zero bytes written - something went wrong...", __func__);
+      break;
+    } else if (ret == remaining_bytes) {
+      // Everything written
+      bytes_written += ret;
+      break;
+    }
+
+    bytes_written += ret;
+    remaining_bytes -= ret;
+    ALOGW("%s: %d/%d bytes written - retrying remaining %d bytes", __func__,
+          static_cast<int>(bytes_written), static_cast<int>(total_bytes),
+          static_cast<int>(remaining_bytes));
+
+    // Remove iovs which are written from the list
+    while (ret >= iov->iov_len) {
+      ret -= iov->iov_len;
+      ++iov;
+      --iovcnt;
+    }
+    // Adjust the iov to point to the remaining data which needs to be written
+    if (ret) {
+      iov->iov_base = static_cast<uint8_t*>(iov->iov_base) + ret;
+      iov->iov_len -= ret;
+    }
+  }
+  return bytes_written;
 }
 
 void H4Protocol::OnPacketReady() {
diff --git a/compatibility_matrices/compatibility_matrix.current.xml b/compatibility_matrices/compatibility_matrix.current.xml
index 92f9263..4607f94 100644
--- a/compatibility_matrices/compatibility_matrix.current.xml
+++ b/compatibility_matrices/compatibility_matrix.current.xml
@@ -298,6 +298,15 @@
             <instance>default</instance>
         </interface>
     </hal>
+    <!-- TODO(b/177269435): require health AIDL HAL and deprecate HIDL HAL -->
+    <hal format="aidl" optional="true">
+        <name>android.hardware.health</name>
+        <version>1</version>
+        <interface>
+            <name>IHealth</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
     <hal format="aidl" optional="true">
         <name>android.hardware.health.storage</name>
         <version>1</version>
diff --git a/health/aidl/Android.bp b/health/aidl/Android.bp
new file mode 100644
index 0000000..3a11e64
--- /dev/null
+++ b/health/aidl/Android.bp
@@ -0,0 +1,63 @@
+// Copyright (C) 2021 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+aidl_interface {
+    name: "android.hardware.health",
+    vendor_available: true,
+    srcs: ["android/hardware/health/*.aidl"],
+    stability: "vintf",
+    backend: {
+        cpp: {
+            enabled: false,
+        },
+        java: {
+            enabled: true,
+            sdk_version: "module_current",
+        },
+        ndk: {
+            separate_platform_variant: false,
+            vndk: {
+                enabled: true,
+            },
+        },
+    },
+}
+
+cc_library {
+    name: "android.hardware.health-translate-ndk",
+    vendor_available: true,
+    srcs: ["android/hardware/health/translate-ndk.cpp"],
+    shared_libs: [
+        "libbinder_ndk",
+        "libhidlbase",
+        "android.hardware.health-V1-ndk",
+        "android.hardware.health@2.0",
+        "android.hardware.health@2.1",
+    ],
+    export_include_dirs: ["include"],
+    export_shared_lib_headers: [
+        "android.hardware.health@2.0",
+        "android.hardware.health@2.1",
+    ],
+}
+
+java_library {
+    name: "android.hardware.health-translate-java",
+    srcs: ["android/hardware/health/Translate.java"],
+    libs: [
+        "android.hardware.health-V1-java",
+        "android.hardware.health-V2.0-java",
+        "android.hardware.health-V2.1-java",
+    ],
+}
diff --git a/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/BatteryCapacityLevel.aidl b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/BatteryCapacityLevel.aidl
new file mode 100644
index 0000000..e543886
--- /dev/null
+++ b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/BatteryCapacityLevel.aidl
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.health;
+@Backing(type="int") @VintfStability
+enum BatteryCapacityLevel {
+  UNSUPPORTED = -1,
+  UNKNOWN = 0,
+  CRITICAL = 1,
+  LOW = 2,
+  NORMAL = 3,
+  HIGH = 4,
+  FULL = 5,
+}
diff --git a/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/BatteryHealth.aidl b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/BatteryHealth.aidl
new file mode 100644
index 0000000..4ce7952
--- /dev/null
+++ b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/BatteryHealth.aidl
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.health;
+@Backing(type="int") @VintfStability
+enum BatteryHealth {
+  UNKNOWN = 1,
+  GOOD = 2,
+  OVERHEAT = 3,
+  DEAD = 4,
+  OVER_VOLTAGE = 5,
+  UNSPECIFIED_FAILURE = 6,
+  COLD = 7,
+}
diff --git a/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/BatteryStatus.aidl b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/BatteryStatus.aidl
new file mode 100644
index 0000000..340b2ec
--- /dev/null
+++ b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/BatteryStatus.aidl
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.health;
+@Backing(type="int") @VintfStability
+enum BatteryStatus {
+  UNKNOWN = 1,
+  CHARGING = 2,
+  DISCHARGING = 3,
+  NOT_CHARGING = 4,
+  FULL = 5,
+}
diff --git a/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/DiskStats.aidl b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/DiskStats.aidl
new file mode 100644
index 0000000..5aa5890
--- /dev/null
+++ b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/DiskStats.aidl
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.health;
+@VintfStability
+parcelable DiskStats {
+  long reads;
+  long readMerges;
+  long readSectors;
+  long readTicks;
+  long writes;
+  long writeMerges;
+  long writeSectors;
+  long writeTicks;
+  long ioInFlight;
+  long ioTicks;
+  long ioInQueue;
+}
diff --git a/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/HealthInfo.aidl b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/HealthInfo.aidl
new file mode 100644
index 0000000..34a87a6
--- /dev/null
+++ b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/HealthInfo.aidl
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.health;
+@VintfStability
+parcelable HealthInfo {
+  boolean chargerAcOnline;
+  boolean chargerUsbOnline;
+  boolean chargerWirelessOnline;
+  int maxChargingCurrentMicroamps;
+  int maxChargingVoltageMicrovolts;
+  android.hardware.health.BatteryStatus batteryStatus;
+  android.hardware.health.BatteryHealth batteryHealth;
+  boolean batteryPresent;
+  int batteryLevel;
+  int batteryVoltageMillivolts;
+  int batteryTemperatureTenthsCelsius;
+  int batteryCurrentMicroamps;
+  int batteryCycleCount;
+  int batteryFullChargeUah;
+  int batteryChargeCounterUah;
+  String batteryTechnology;
+  int batteryCurrentAverageMicroamps;
+  android.hardware.health.DiskStats[] diskStats;
+  android.hardware.health.StorageInfo[] storageInfos;
+  android.hardware.health.BatteryCapacityLevel batteryCapacityLevel;
+  long batteryChargeTimeToFullNowSeconds;
+  int batteryFullChargeDesignCapacityUah;
+  const int BATTERY_CHARGE_TIME_TO_FULL_NOW_SECONDS_UNSUPPORTED = -1;
+}
diff --git a/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/IHealth.aidl b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/IHealth.aidl
new file mode 100644
index 0000000..7016ae4
--- /dev/null
+++ b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/IHealth.aidl
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.health;
+@VintfStability
+interface IHealth {
+  void registerCallback(in android.hardware.health.IHealthInfoCallback callback);
+  void unregisterCallback(in android.hardware.health.IHealthInfoCallback callback);
+  void update();
+  int getChargeCounterUah();
+  int getCurrentNowMicroamps();
+  int getCurrentAverageMicroamps();
+  int getCapacity();
+  long getEnergyCounterNwh();
+  android.hardware.health.BatteryStatus getChargeStatus();
+  android.hardware.health.StorageInfo[] getStorageInfo();
+  android.hardware.health.DiskStats[] getDiskStats();
+  android.hardware.health.HealthInfo getHealthInfo();
+  const int STATUS_UNKNOWN = 2;
+  const int STATUS_CALLBACK_DIED = 4;
+}
diff --git a/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/IHealthInfoCallback.aidl b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/IHealthInfoCallback.aidl
new file mode 100644
index 0000000..1b6366f
--- /dev/null
+++ b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/IHealthInfoCallback.aidl
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.health;
+@VintfStability
+interface IHealthInfoCallback {
+  oneway void healthInfoChanged(in android.hardware.health.HealthInfo info);
+}
diff --git a/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/StorageInfo.aidl b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/StorageInfo.aidl
new file mode 100644
index 0000000..eaae5a6
--- /dev/null
+++ b/health/aidl/aidl_api/android.hardware.health/current/android/hardware/health/StorageInfo.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.health;
+@VintfStability
+parcelable StorageInfo {
+  int eol;
+  int lifetimeA;
+  int lifetimeB;
+  String version;
+}
diff --git a/health/aidl/android/hardware/health/BatteryCapacityLevel.aidl b/health/aidl/android/hardware/health/BatteryCapacityLevel.aidl
new file mode 100644
index 0000000..0c26fa2
--- /dev/null
+++ b/health/aidl/android/hardware/health/BatteryCapacityLevel.aidl
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.health;
+
+/**
+ * Battery capacity level. This enum provides additional information along side
+ * with the battery capacity.
+ * Clients of this HAL must use this value before inferring it from the
+ * battery capacity.
+ */
+@VintfStability
+@Backing(type="int")
+enum BatteryCapacityLevel {
+    /**
+     * Battery capacity level is unsupported.
+     * Battery capacity level must be set to this value if and only if the
+     * implementation is unsupported.
+     */
+    UNSUPPORTED = -1,
+    /**
+     * Battery capacity level is unknown.
+     * Battery capacity level must be set to this value if and only if battery
+     * is not present or the battery capacity level is unknown/uninitialized.
+     */
+    UNKNOWN,
+    /**
+     * Battery is at critical level. The Android framework must schedule a
+     * shutdown when it sees this value from the HAL.
+     */
+    CRITICAL,
+    /**
+     * Battery is low. The Android framework may limit the performance of
+     * the device when it sees this value from the HAL.
+     */
+    LOW,
+    /**
+     * Battery level is normal.
+     */
+    NORMAL,
+    /**
+     * Battery level is high.
+     */
+    HIGH,
+    /**
+     * Battery is full. It must be set to FULL if and only if battery level is
+     * 100.
+     */
+    FULL,
+}
diff --git a/health/aidl/android/hardware/health/BatteryHealth.aidl b/health/aidl/android/hardware/health/BatteryHealth.aidl
new file mode 100644
index 0000000..2b6e51f
--- /dev/null
+++ b/health/aidl/android/hardware/health/BatteryHealth.aidl
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.health;
+
+/**
+ * Possible values for Battery Health.
+ * Note: These are currently in sync with BatteryManager and must not
+ * be extended / altered.
+ */
+@VintfStability
+@Backing(type="int")
+enum BatteryHealth {
+    UNKNOWN = 1,
+    GOOD = 2,
+    OVERHEAT = 3,
+    DEAD = 4,
+    OVER_VOLTAGE = 5,
+    /**
+     * Battery experienced an unknown/unspecified failure.
+     */
+    UNSPECIFIED_FAILURE = 6,
+    COLD = 7,
+}
diff --git a/health/aidl/android/hardware/health/BatteryStatus.aidl b/health/aidl/android/hardware/health/BatteryStatus.aidl
new file mode 100644
index 0000000..774b28e
--- /dev/null
+++ b/health/aidl/android/hardware/health/BatteryStatus.aidl
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.health;
+
+/**
+ * Possible values for Battery Status.
+ * Note: These are currently in sync with BatteryManager and must not
+ * be extended / altered.
+ */
+@VintfStability
+@Backing(type="int")
+enum BatteryStatus {
+    UNKNOWN = 1,
+    CHARGING = 2,
+    DISCHARGING = 3,
+    /**
+     * Battery is *not* charging - special case when charger is present
+     * but battery isn't charging
+     */
+    NOT_CHARGING = 4,
+    FULL = 5,
+}
diff --git a/health/aidl/android/hardware/health/DiskStats.aidl b/health/aidl/android/hardware/health/DiskStats.aidl
new file mode 100644
index 0000000..532cbfd
--- /dev/null
+++ b/health/aidl/android/hardware/health/DiskStats.aidl
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.health;
+
+/*
+ * Disk statistics since boot.
+ *
+ * See {@code struct disk_stats} in {@code storaged} for interpretations of these fields.
+ *
+ * All integers in this struct must be interpreted as unsigned.
+ */
+@VintfStability
+parcelable DiskStats {
+    /**
+     * Number of reads processed.
+     *
+     * Value must be interpreted as unsigned.
+     */
+    long reads;
+    /**
+     * number of read I/Os merged with in-queue I/Os.
+     *
+     * Value must be interpreted as unsigned.
+     */
+    long readMerges;
+    /**
+     * number of sectors read.
+     *
+     * Value must be interpreted as unsigned.
+     */
+    long readSectors;
+    /**
+     * total wait time for read requests.
+     *
+     * Value must be interpreted as unsigned.
+     */
+    long readTicks;
+    /**
+     * number of writes processed.
+     *
+     * Value must be interpreted as unsigned.
+     */
+    long writes;
+    /**
+     * number of writes merged with in-queue I/Os.
+     *
+     * Value must be interpreted as unsigned.
+     */
+    long writeMerges;
+    /**
+     * number of sectors written.
+     *
+     * Value must be interpreted as unsigned.
+     */
+    long writeSectors;
+    /**
+     * total wait time for write requests.
+     *
+     * Value must be interpreted as unsigned.
+     */
+    long writeTicks;
+    /**
+     * number of I/Os currently in flight.
+     *
+     * Value must be interpreted as unsigned.
+     */
+    long ioInFlight;
+    /**
+     * total time this block device has been active.
+     *
+     * Value must be interpreted as unsigned.
+     */
+    long ioTicks;
+    /**
+     * total wait time for all requests.
+     *
+     * Value must be interpreted as unsigned.
+     */
+    long ioInQueue;
+}
diff --git a/health/aidl/android/hardware/health/HealthInfo.aidl b/health/aidl/android/hardware/health/HealthInfo.aidl
new file mode 100644
index 0000000..504e218
--- /dev/null
+++ b/health/aidl/android/hardware/health/HealthInfo.aidl
@@ -0,0 +1,132 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.health;
+
+import android.hardware.health.BatteryCapacityLevel;
+import android.hardware.health.BatteryHealth;
+import android.hardware.health.BatteryStatus;
+import android.hardware.health.DiskStats;
+import android.hardware.health.StorageInfo;
+
+/**
+ * Health Information.
+ */
+@VintfStability
+parcelable HealthInfo {
+    /**
+     * AC charger state - 'true' if online
+     */
+    boolean chargerAcOnline;
+    /**
+     * USB charger state - 'true' if online
+     */
+    boolean chargerUsbOnline;
+    /**
+     * Wireless charger state - 'true' if online
+     */
+    boolean chargerWirelessOnline;
+    /**
+     * Maximum charging current supported by charger in µA
+     */
+    int maxChargingCurrentMicroamps;
+    /**
+     * Maximum charging voltage supported by charger in µV
+     */
+    int maxChargingVoltageMicrovolts;
+
+    android.hardware.health.BatteryStatus batteryStatus;
+
+    android.hardware.health.BatteryHealth batteryHealth;
+    /**
+     * 'true' if battery is present
+     */
+    boolean batteryPresent;
+    /**
+     * Remaining battery capacity in percent
+     */
+    int batteryLevel;
+    /**
+     * Instantaneous battery voltage in millivolts (mV).
+     *
+     * Historically, the unit of this field is microvolts (µV), but all
+     * clients and implementations uses millivolts in practice, making it
+     * the de-facto standard.
+     */
+    int batteryVoltageMillivolts;
+    /**
+     * Instantaneous battery temperature in tenths of degrees Celsius
+     */
+    int batteryTemperatureTenthsCelsius;
+    /**
+     * Instantaneous battery current in µA
+     */
+    int batteryCurrentMicroamps;
+    /**
+     * Battery charge cycle count
+     */
+    int batteryCycleCount;
+    /**
+     * Battery charge value when it is considered to be "full" in µA-h
+     */
+    int batteryFullChargeUah;
+    /**
+     * Instantaneous battery capacity in µA-h
+     */
+    int batteryChargeCounterUah;
+    /**
+     * Battery technology, e.g. "Li-ion, Li-Poly" etc.
+     */
+    String batteryTechnology;
+    /**
+     * Average battery current in µA. Will be 0 if unsupported.
+     */
+    int batteryCurrentAverageMicroamps;
+    /**
+     * Disk Statistics. Will be an empty vector if unsupported.
+     */
+    DiskStats[] diskStats;
+    /**
+     * Information on storage devices. Will be an empty vector if
+     * unsupported.
+     */
+    StorageInfo[] storageInfos;
+    /**
+     * Battery capacity level. See {@link BatteryCapacityLevel} for more details.
+     */
+    BatteryCapacityLevel batteryCapacityLevel;
+
+    /**
+     * Value of {@link #batteryChargeTimeToFullNowSeconds} if it is not
+     * supported.
+     */
+    const int BATTERY_CHARGE_TIME_TO_FULL_NOW_SECONDS_UNSUPPORTED = -1;
+    /**
+     * Estimated time to fully charge the device (in seconds).
+     * Value must be BATTERY_CHARGE_TIME_TO_FULL_NOW_SECONDS_UNSUPPORTED if and
+     * only if the implementation is unsupported.
+     * Value must be 0 if and only if batteryCapacityLevel is FULL or UNKNOWN.
+     * Otherwise, value must be positive.
+     */
+    long batteryChargeTimeToFullNowSeconds;
+    /**
+     * Estimated battery full charge design capacity (in microamp hours, µAh).
+     * Value must be 0 if unknown.
+     * Value must be greater than 100 000 µAh if known.
+     * Value must be less than 100 000 000 µAh if known.
+     */
+    int batteryFullChargeDesignCapacityUah;
+}
diff --git a/health/aidl/android/hardware/health/IHealth.aidl b/health/aidl/android/hardware/health/IHealth.aidl
new file mode 100644
index 0000000..d541eca
--- /dev/null
+++ b/health/aidl/android/hardware/health/IHealth.aidl
@@ -0,0 +1,203 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.health;
+
+import android.hardware.health.BatteryStatus;
+import android.hardware.health.DiskStats;
+import android.hardware.health.HealthInfo;
+import android.hardware.health.IHealthInfoCallback;
+import android.hardware.health.StorageInfo;
+
+/**
+ * IHealth manages health info and posts events on registered callbacks.
+ *
+ * Implementations must send health info to all callbacks periodically.
+ */
+@VintfStability
+interface IHealth {
+    /** Status code for function. The operation encounters an unknown error. */
+    const int STATUS_UNKNOWN = 2;
+
+    /**
+     * Status code for function.
+     * A registered callback object is dead.
+     */
+    const int STATUS_CALLBACK_DIED = 4;
+
+    /**
+     * Register a callback for any health info events.
+     *
+     * Registering a new callback must not unregister the old one; the old
+     * callback remains registered until one of the following happens:
+     * - A client explicitly calls {@link #unregisterCallback} to unregister it.
+     * - The client process that hosts the callback dies.
+     *
+     * @param callback the callback to register.
+     * @return If error, return service specific error with code STATUS_UNKNOWN.
+     */
+    void registerCallback(in IHealthInfoCallback callback);
+
+    /**
+     * Explicitly unregister a callback that is previously registered through
+     * {@link #registerCallback}.
+     *
+     * @param callback the callback to unregister.
+     * @return If error:
+     *         - Return exception with code EX_ILLEGAL_ARGUMENT
+     *           if callback is not registered previously,
+     *         - Return service specific error with code STATUS_UNKNOWN
+     *           for other errors.
+     */
+    void unregisterCallback(in IHealthInfoCallback callback);
+
+    /**
+     * Schedule update.
+     *
+     * When update() is called, the service must notify all registered callbacks
+     * with the most recent health info.
+     *
+     * @return If error, return service specific error with code:
+     *         - STATUS_CALLBACK_DIED if any registered callback is dead,
+     *         - STATUS_UNKNOWN for other errors.
+     */
+    void update();
+
+    /**
+     * Get battery capacity in microampere-hours(µAh).
+     *
+     * @return battery capacity if successful.
+     *         If error:
+     *         - Return exception with code EX_UNSUPPORTED_OPERATION
+     *           if this property is not supported
+     *           (e.g. the file that stores this property does not exist),
+     *         - Retrurn service specific error with code
+     *           STATUS_UNKNOWN for other errors.
+     */
+    int getChargeCounterUah();
+
+    /**
+     * Get instantaneous battery current in microamperes(µA).
+     *
+     * Positive values indicate net current entering the battery from a charge
+     * source, negative values indicate net current discharging from the
+     * battery.
+     *
+     * @return instantaneous battery current if successful.
+     *         If error:
+     *         - Return exception with code EX_UNSUPPORTED_OPERATION
+     *           if this property is not supported
+     *                 (e.g. the file that stores this property does not exist),
+     *         - Return service specific error with code STATUS_UNKNOWN
+     *           for for other errors.
+     */
+    int getCurrentNowMicroamps();
+
+    /**
+     * Get average battery current in microamperes(µA).
+     *
+     * Positive values indicate net current entering the battery from a charge
+     * source, negative values indicate net current discharging from the
+     * battery. The time period over which the average is computed may depend on
+     * the fuel gauge hardware and its configuration.
+     *
+     * @return average battery current if successful.
+     *         If error:
+     *         - Return exception with code EX_UNSUPPORTED_OPERATION
+     *           if this property is not supported
+     *                 (e.g. the file that stores this property does not exist),
+     *         - Return service specific error with code STATUS_UNKNOWN
+     *           for for other errors.
+     */
+    int getCurrentAverageMicroamps();
+
+    /**
+     * Get remaining battery capacity percentage of total capacity
+     * (with no fractional part).
+     *
+     * @return remaining battery capacity if successful.
+     *         If error:
+     *         - Return exception with code EX_UNSUPPORTED_OPERATION
+     *           if this property is not supported
+     *                 (e.g. the file that stores this property does not exist),
+     *         - Return service specific error with code STATUS_UNKNOWN
+     *           for for other errors.
+     */
+    int getCapacity();
+
+    /**
+     * Get battery remaining energy in nanowatt-hours.
+     *
+     * @return remaining energy if successful.
+     *         If error:
+     *         - Return exception with code EX_UNSUPPORTED_OPERATION
+     *           if this property is not supported,
+     *         - Return service specific error with code STATUS_UNKNOWN
+     *           for for other errors.
+     */
+    long getEnergyCounterNwh();
+
+    /**
+     * Get battery charge status.
+     *
+     * @return charge status if successful.
+     *         If error:
+     *         - Return exception with code EX_UNSUPPORTED_OPERATION
+     *           if this property is not supported
+     *                 (e.g. the file that stores this property does not exist),
+     *         - Return service specific error with code STATUS_UNKNOWN
+     *           for other errors.
+     */
+    BatteryStatus getChargeStatus();
+
+    /**
+     * Get storage info.
+     *
+     * @return vector of StorageInfo structs if successful.
+     *         If error:
+     *         - Return exception with code EX_UNSUPPORTED_OPERATION
+     *           if this property is not supported,
+     *         - Return service specific error with code STATUS_UNKNOWN
+     *           for other errors.
+     */
+    StorageInfo[] getStorageInfo();
+
+    /**
+     * Gets disk statistics (number of reads/writes processed, number of I/O
+     * operations in flight etc).
+     *
+     * @return vector of disk statistics if successful.
+     *         The mapping is index 0->sda, 1->sdb and so on.
+     *         If error:
+     *         - Return exception with code EX_UNSUPPORTED_OPERATION
+     *           if this property is not supported,
+     *         - Return service specific error with code STATUS_UNKNOWN
+     *           for other errors.
+     */
+    DiskStats[] getDiskStats();
+
+    /**
+     * Get Health Information.
+     *
+     * @return Health information if successful.
+     *         If error:
+     *         - Return exception with code EX_UNSUPPORTED_OPERATION
+     *           if this API is not supported,
+     *         - Return service specific error with code STATUS_UNKNOWN
+     *           for for other errors.
+     */
+    HealthInfo getHealthInfo();
+}
diff --git a/health/aidl/android/hardware/health/IHealthInfoCallback.aidl b/health/aidl/android/hardware/health/IHealthInfoCallback.aidl
new file mode 100644
index 0000000..e9720fa
--- /dev/null
+++ b/health/aidl/android/hardware/health/IHealthInfoCallback.aidl
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.health;
+
+import android.hardware.health.HealthInfo;
+
+/**
+ * IHealthInfoCallback is the updated callback interface to
+ * {@link IHealth#registerCallback}.
+ */
+@VintfStability
+interface IHealthInfoCallback {
+    /**
+     * An implementation of IHealth must call healthInfoChanged on all
+     * registered callbacks after health info changes.
+     * @param info the updated HealthInfo
+     */
+    oneway void healthInfoChanged(in HealthInfo info);
+}
diff --git a/health/aidl/android/hardware/health/StorageInfo.aidl b/health/aidl/android/hardware/health/StorageInfo.aidl
new file mode 100644
index 0000000..4c4dace
--- /dev/null
+++ b/health/aidl/android/hardware/health/StorageInfo.aidl
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.health;
+
+/*
+ * Information on storage device including life time estimates, end of life
+ * information and other attributes.
+ *
+ * All integers in this struct must be interpreted as non-negative.
+ */
+@VintfStability
+parcelable StorageInfo {
+    /**
+     * pre-eol (end of life) information. Follows JEDEC standard No.84-B50.
+     *
+     * Value must be interpreted as non-negative.
+     */
+    int eol;
+    /**
+     * device life time estimation (type A). Follows JEDEC standard No.84-B50.
+     *
+     * Value must be interpreted as non-negative.
+     */
+    int lifetimeA;
+    /**
+     * device life time estimation (type B). Follows JEDEC standard No.84-B50.
+     *
+     * Value must be interpreted as non-negative.
+     */
+    int lifetimeB;
+    /**
+     * version string
+     */
+    String version;
+}
diff --git a/health/aidl/android/hardware/health/Translate.java b/health/aidl/android/hardware/health/Translate.java
new file mode 100644
index 0000000..c8ace1c
--- /dev/null
+++ b/health/aidl/android/hardware/health/Translate.java
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.health;
+
+public class Translate {
+    static public android.hardware.health.StorageInfo h2aTranslate(
+            android.hardware.health.V2_0.StorageInfo in) {
+        android.hardware.health.StorageInfo out = new android.hardware.health.StorageInfo();
+        out.eol = in.eol;
+        out.lifetimeA = in.lifetimeA;
+        out.lifetimeB = in.lifetimeB;
+        out.version = in.version;
+        return out;
+    }
+
+    static public android.hardware.health.DiskStats h2aTranslate(
+            android.hardware.health.V2_0.DiskStats in) {
+        android.hardware.health.DiskStats out = new android.hardware.health.DiskStats();
+        out.reads = in.reads;
+        out.readMerges = in.readMerges;
+        out.readSectors = in.readSectors;
+        out.readTicks = in.readTicks;
+        out.writes = in.writes;
+        out.writeMerges = in.writeMerges;
+        out.writeSectors = in.writeSectors;
+        out.writeTicks = in.writeTicks;
+        out.ioInFlight = in.ioInFlight;
+        out.ioTicks = in.ioTicks;
+        out.ioInQueue = in.ioInQueue;
+        return out;
+    }
+
+    static public android.hardware.health.HealthInfo h2aTranslate(
+            android.hardware.health.V2_1.HealthInfo in) {
+        android.hardware.health.HealthInfo out = new android.hardware.health.HealthInfo();
+        out.chargerAcOnline = in.legacy.legacy.chargerAcOnline;
+        out.chargerUsbOnline = in.legacy.legacy.chargerUsbOnline;
+        out.chargerWirelessOnline = in.legacy.legacy.chargerWirelessOnline;
+        out.maxChargingCurrentMicroamps = in.legacy.legacy.maxChargingCurrent;
+        out.maxChargingVoltageMicrovolts = in.legacy.legacy.maxChargingVoltage;
+        out.batteryStatus = in.legacy.legacy.batteryStatus;
+        out.batteryHealth = in.legacy.legacy.batteryHealth;
+        out.batteryPresent = in.legacy.legacy.batteryPresent;
+        out.batteryLevel = in.legacy.legacy.batteryLevel;
+        out.batteryVoltageMillivolts = in.legacy.legacy.batteryVoltage;
+        out.batteryTemperatureTenthsCelsius = in.legacy.legacy.batteryTemperature;
+        out.batteryCurrentMicroamps = in.legacy.legacy.batteryCurrent;
+        out.batteryCycleCount = in.legacy.legacy.batteryCycleCount;
+        out.batteryFullChargeUah = in.legacy.legacy.batteryFullCharge;
+        out.batteryChargeCounterUah = in.legacy.legacy.batteryChargeCounter;
+        out.batteryTechnology = in.legacy.legacy.batteryTechnology;
+        out.batteryCurrentAverageMicroamps = in.legacy.batteryCurrentAverage;
+        out.diskStats = new android.hardware.health.DiskStats[in.legacy.diskStats.size()];
+        for (int i = 0; i < in.legacy.diskStats.size(); i++) {
+            out.diskStats[i] = h2aTranslate(in.legacy.diskStats.get(i));
+        }
+        out.storageInfos = new android.hardware.health.StorageInfo[in.legacy.storageInfos.size()];
+        for (int i = 0; i < in.legacy.storageInfos.size(); i++) {
+            out.storageInfos[i] = h2aTranslate(in.legacy.storageInfos.get(i));
+        }
+        out.batteryCapacityLevel = in.batteryCapacityLevel;
+        out.batteryChargeTimeToFullNowSeconds = in.batteryChargeTimeToFullNowSeconds;
+        out.batteryFullChargeDesignCapacityUah = in.batteryFullChargeDesignCapacityUah;
+        return out;
+    }
+}
diff --git a/health/aidl/android/hardware/health/translate-ndk.cpp b/health/aidl/android/hardware/health/translate-ndk.cpp
new file mode 100644
index 0000000..7fe6ced
--- /dev/null
+++ b/health/aidl/android/hardware/health/translate-ndk.cpp
@@ -0,0 +1,148 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "android/hardware/health/translate-ndk.h"
+
+namespace android::h2a {
+
+static_assert(aidl::android::hardware::health::BatteryStatus::UNKNOWN ==
+              static_cast<aidl::android::hardware::health::BatteryStatus>(
+                      ::android::hardware::health::V1_0::BatteryStatus::UNKNOWN));
+static_assert(aidl::android::hardware::health::BatteryStatus::CHARGING ==
+              static_cast<aidl::android::hardware::health::BatteryStatus>(
+                      ::android::hardware::health::V1_0::BatteryStatus::CHARGING));
+static_assert(aidl::android::hardware::health::BatteryStatus::DISCHARGING ==
+              static_cast<aidl::android::hardware::health::BatteryStatus>(
+                      ::android::hardware::health::V1_0::BatteryStatus::DISCHARGING));
+static_assert(aidl::android::hardware::health::BatteryStatus::NOT_CHARGING ==
+              static_cast<aidl::android::hardware::health::BatteryStatus>(
+                      ::android::hardware::health::V1_0::BatteryStatus::NOT_CHARGING));
+static_assert(aidl::android::hardware::health::BatteryStatus::FULL ==
+              static_cast<aidl::android::hardware::health::BatteryStatus>(
+                      ::android::hardware::health::V1_0::BatteryStatus::FULL));
+
+static_assert(aidl::android::hardware::health::BatteryHealth::UNKNOWN ==
+              static_cast<aidl::android::hardware::health::BatteryHealth>(
+                      ::android::hardware::health::V1_0::BatteryHealth::UNKNOWN));
+static_assert(aidl::android::hardware::health::BatteryHealth::GOOD ==
+              static_cast<aidl::android::hardware::health::BatteryHealth>(
+                      ::android::hardware::health::V1_0::BatteryHealth::GOOD));
+static_assert(aidl::android::hardware::health::BatteryHealth::OVERHEAT ==
+              static_cast<aidl::android::hardware::health::BatteryHealth>(
+                      ::android::hardware::health::V1_0::BatteryHealth::OVERHEAT));
+static_assert(aidl::android::hardware::health::BatteryHealth::DEAD ==
+              static_cast<aidl::android::hardware::health::BatteryHealth>(
+                      ::android::hardware::health::V1_0::BatteryHealth::DEAD));
+static_assert(aidl::android::hardware::health::BatteryHealth::OVER_VOLTAGE ==
+              static_cast<aidl::android::hardware::health::BatteryHealth>(
+                      ::android::hardware::health::V1_0::BatteryHealth::OVER_VOLTAGE));
+static_assert(aidl::android::hardware::health::BatteryHealth::UNSPECIFIED_FAILURE ==
+              static_cast<aidl::android::hardware::health::BatteryHealth>(
+                      ::android::hardware::health::V1_0::BatteryHealth::UNSPECIFIED_FAILURE));
+static_assert(aidl::android::hardware::health::BatteryHealth::COLD ==
+              static_cast<aidl::android::hardware::health::BatteryHealth>(
+                      ::android::hardware::health::V1_0::BatteryHealth::COLD));
+
+static_assert(aidl::android::hardware::health::BatteryCapacityLevel::UNSUPPORTED ==
+              static_cast<aidl::android::hardware::health::BatteryCapacityLevel>(
+                      ::android::hardware::health::V2_1::BatteryCapacityLevel::UNSUPPORTED));
+static_assert(aidl::android::hardware::health::BatteryCapacityLevel::UNKNOWN ==
+              static_cast<aidl::android::hardware::health::BatteryCapacityLevel>(
+                      ::android::hardware::health::V2_1::BatteryCapacityLevel::UNKNOWN));
+static_assert(aidl::android::hardware::health::BatteryCapacityLevel::CRITICAL ==
+              static_cast<aidl::android::hardware::health::BatteryCapacityLevel>(
+                      ::android::hardware::health::V2_1::BatteryCapacityLevel::CRITICAL));
+static_assert(aidl::android::hardware::health::BatteryCapacityLevel::LOW ==
+              static_cast<aidl::android::hardware::health::BatteryCapacityLevel>(
+                      ::android::hardware::health::V2_1::BatteryCapacityLevel::LOW));
+static_assert(aidl::android::hardware::health::BatteryCapacityLevel::NORMAL ==
+              static_cast<aidl::android::hardware::health::BatteryCapacityLevel>(
+                      ::android::hardware::health::V2_1::BatteryCapacityLevel::NORMAL));
+static_assert(aidl::android::hardware::health::BatteryCapacityLevel::HIGH ==
+              static_cast<aidl::android::hardware::health::BatteryCapacityLevel>(
+                      ::android::hardware::health::V2_1::BatteryCapacityLevel::HIGH));
+static_assert(aidl::android::hardware::health::BatteryCapacityLevel::FULL ==
+              static_cast<aidl::android::hardware::health::BatteryCapacityLevel>(
+                      ::android::hardware::health::V2_1::BatteryCapacityLevel::FULL));
+
+__attribute__((warn_unused_result)) bool translate(
+        const ::android::hardware::health::V2_0::StorageInfo& in,
+        aidl::android::hardware::health::StorageInfo* out) {
+    out->eol = in.eol;
+    out->lifetimeA = in.lifetimeA;
+    out->lifetimeB = in.lifetimeB;
+    out->version = in.version;
+    return true;
+}
+
+__attribute__((warn_unused_result)) bool translate(
+        const ::android::hardware::health::V2_0::DiskStats& in,
+        aidl::android::hardware::health::DiskStats* out) {
+    out->reads = static_cast<int64_t>(in.reads);
+    out->readMerges = static_cast<int64_t>(in.readMerges);
+    out->readSectors = static_cast<int64_t>(in.readSectors);
+    out->readTicks = static_cast<int64_t>(in.readTicks);
+    out->writes = static_cast<int64_t>(in.writes);
+    out->writeMerges = static_cast<int64_t>(in.writeMerges);
+    out->writeSectors = static_cast<int64_t>(in.writeSectors);
+    out->writeTicks = static_cast<int64_t>(in.writeTicks);
+    out->ioInFlight = static_cast<int64_t>(in.ioInFlight);
+    out->ioTicks = static_cast<int64_t>(in.ioTicks);
+    out->ioInQueue = static_cast<int64_t>(in.ioInQueue);
+    return true;
+}
+
+__attribute__((warn_unused_result)) bool translate(
+        const ::android::hardware::health::V2_1::HealthInfo& in,
+        aidl::android::hardware::health::HealthInfo* out) {
+    out->chargerAcOnline = static_cast<bool>(in.legacy.legacy.chargerAcOnline);
+    out->chargerUsbOnline = static_cast<bool>(in.legacy.legacy.chargerUsbOnline);
+    out->chargerWirelessOnline = static_cast<bool>(in.legacy.legacy.chargerWirelessOnline);
+    out->maxChargingCurrentMicroamps = static_cast<int32_t>(in.legacy.legacy.maxChargingCurrent);
+    out->maxChargingVoltageMicrovolts = static_cast<int32_t>(in.legacy.legacy.maxChargingVoltage);
+    out->batteryStatus = static_cast<aidl::android::hardware::health::BatteryStatus>(
+            in.legacy.legacy.batteryStatus);
+    out->batteryHealth = static_cast<aidl::android::hardware::health::BatteryHealth>(
+            in.legacy.legacy.batteryHealth);
+    out->batteryPresent = static_cast<bool>(in.legacy.legacy.batteryPresent);
+    out->batteryLevel = static_cast<int32_t>(in.legacy.legacy.batteryLevel);
+    out->batteryVoltageMillivolts = static_cast<int32_t>(in.legacy.legacy.batteryVoltage);
+    out->batteryTemperatureTenthsCelsius =
+            static_cast<int32_t>(in.legacy.legacy.batteryTemperature);
+    out->batteryCurrentMicroamps = static_cast<int32_t>(in.legacy.legacy.batteryCurrent);
+    out->batteryCycleCount = static_cast<int32_t>(in.legacy.legacy.batteryCycleCount);
+    out->batteryFullChargeUah = static_cast<int32_t>(in.legacy.legacy.batteryFullCharge);
+    out->batteryChargeCounterUah = static_cast<int32_t>(in.legacy.legacy.batteryChargeCounter);
+    out->batteryTechnology = in.legacy.legacy.batteryTechnology;
+    out->batteryCurrentAverageMicroamps = static_cast<int32_t>(in.legacy.batteryCurrentAverage);
+    out->diskStats.clear();
+    out->diskStats.resize(in.legacy.diskStats.size());
+    for (size_t i = 0; i < in.legacy.diskStats.size(); ++i)
+        if (!translate(in.legacy.diskStats[i], &out->diskStats[i])) return false;
+    out->storageInfos.clear();
+    out->storageInfos.resize(in.legacy.storageInfos.size());
+    for (size_t i = 0; i < in.legacy.storageInfos.size(); ++i)
+        if (!translate(in.legacy.storageInfos[i], &out->storageInfos[i])) return false;
+    out->batteryCapacityLevel = static_cast<aidl::android::hardware::health::BatteryCapacityLevel>(
+            in.batteryCapacityLevel);
+    out->batteryChargeTimeToFullNowSeconds =
+            static_cast<int64_t>(in.batteryChargeTimeToFullNowSeconds);
+    out->batteryFullChargeDesignCapacityUah =
+            static_cast<int32_t>(in.batteryFullChargeDesignCapacityUah);
+    return true;
+}
+
+}  // namespace android::h2a
diff --git a/health/aidl/default/Android.bp b/health/aidl/default/Android.bp
new file mode 100644
index 0000000..cb78e77
--- /dev/null
+++ b/health/aidl/default/Android.bp
@@ -0,0 +1,76 @@
+// Copyright (C) 2021 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+cc_defaults {
+    name: "libhealth_aidl_common_defaults",
+    vendor: true,
+    shared_libs: [
+        "libbase",
+        "libbinder_ndk",
+        "libcutils",
+        "liblog",
+        "libutils",
+        "android.hardware.health-V1-ndk",
+
+        // TODO(b/177269435): remove when BatteryMonitor works with AIDL HealthInfo.
+        "libhidlbase",
+    ],
+    static_libs: [
+        "libbatterymonitor",
+        "libhealthloop",
+
+        // TODO(b/177269435): remove when BatteryMonitor works with AIDL HealthInfo.
+        "android.hardware.health-translate-ndk",
+    ],
+}
+
+// AIDL version of libhealth2impl.
+// A helper library for health HAL implementation.
+// HAL implementations can link to this library and extend the Health class.
+cc_library_static {
+    name: "libhealth_aidl_impl",
+    defaults: [
+        "libhealth_aidl_common_defaults",
+    ],
+    export_include_dirs: ["include"],
+    export_static_lib_headers: [
+        "libbatterymonitor",
+    ],
+    srcs: [
+        "health-convert.cpp",
+        "HalHealthLoop.cpp",
+        "Health.cpp",
+        "LinkedCallback.cpp",
+    ],
+    visibility: [
+        ":__subpackages__",
+        "//hardware/interfaces/tests/extension/health:__subpackages__",
+    ],
+}
+
+// AIDL version of android.hardware.health@2.1-service.
+// Default binder service of the health HAL.
+cc_binary {
+    name: "android.hardware.health-service.example",
+    relative_install_path: "hw",
+    init_rc: ["android.hardware.health-service.example.rc"],
+    vintf_fragments: ["android.hardware.health-service.example.xml"],
+    defaults: [
+        "libhealth_aidl_common_defaults",
+    ],
+    static_libs: [
+        "libhealth_aidl_impl",
+    ],
+    srcs: ["main.cpp"],
+}
diff --git a/health/aidl/default/HalHealthLoop.cpp b/health/aidl/default/HalHealthLoop.cpp
new file mode 100644
index 0000000..c9a081e
--- /dev/null
+++ b/health/aidl/default/HalHealthLoop.cpp
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <health-impl/HalHealthLoop.h>
+
+#include <android-base/logging.h>
+
+#include <health-impl/Health.h>
+#include "health-convert.h"
+
+namespace aidl::android::hardware::health {
+
+// Unlike the HIDL version android::hardware::health::V2_1::implementation::HalHealthLoop,
+// do not define HalHealthLoop::Init because we no longer have Health::getHealthConfig.
+// Let the Health class handle Init.
+void HalHealthLoop::Init(struct healthd_config* config) {
+    callback_->OnInit(this, config);
+}
+
+void HalHealthLoop::Heartbeat() {
+    callback_->OnHeartbeat();
+}
+
+void HalHealthLoop::ScheduleBatteryUpdate() {
+    // ignore errors. impl may not be able to handle any callbacks, so
+    // update() may return errors.
+    if (auto res = service_->update(); !res.isOk()) {
+        LOG(WARNING) << "update() on the health HAL implementation failed with "
+                     << res.getDescription();
+    }
+
+    HealthInfo health_info;
+    auto res = service_->getHealthInfo(&health_info);
+    CHECK(res.isOk()) << "getHealthInfo() on the health HAL implementation failed with "
+                      << res.getDescription();
+    OnHealthInfoChanged(health_info);
+}
+
+int HalHealthLoop::PrepareToWait() {
+    return callback_->OnPrepareToWait();
+}
+
+void HalHealthLoop::OnHealthInfoChanged(const HealthInfo& health_info) {
+    callback_->OnHealthInfoChanged(health_info);
+    set_charger_online(health_info);
+    AdjustWakealarmPeriods(charger_online());
+}
+
+void HalHealthLoop::set_charger_online(const HealthInfo& health_info) {
+    charger_online_ = health_info.chargerAcOnline || health_info.chargerUsbOnline ||
+                      health_info.chargerWirelessOnline;
+}
+
+}  // namespace aidl::android::hardware::health
diff --git a/health/aidl/default/Health.cpp b/health/aidl/default/Health.cpp
new file mode 100644
index 0000000..2d91ce0
--- /dev/null
+++ b/health/aidl/default/Health.cpp
@@ -0,0 +1,341 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "health-impl/Health.h"
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android/binder_manager.h>
+#include <android/binder_process.h>
+#include <android/hardware/health/translate-ndk.h>
+#include <health/utils.h>
+
+#include "LinkedCallback.h"
+#include "health-convert.h"
+
+using std::string_literals::operator""s;
+
+namespace aidl::android::hardware::health {
+
+namespace {
+// Wrap LinkedCallback::OnCallbackDied() into a void(void*).
+void OnCallbackDiedWrapped(void* cookie) {
+    LinkedCallback* linked = reinterpret_cast<LinkedCallback*>(cookie);
+    linked->OnCallbackDied();
+}
+}  // namespace
+
+/*
+// If you need to call healthd_board_init, construct the Health instance with
+// the healthd_config after calling healthd_board_init:
+class MyHealth : public Health {
+  protected:
+    MyHealth() : Health(CreateConfig()) {}
+  private:
+    static std::unique_ptr<healthd_config> CreateConfig() {
+      auto config = std::make_unique<healthd_config>();
+      ::android::hardware::health::InitHealthdConfig(config.get());
+      healthd_board_init(config.get());
+      return std::move(config);
+    }
+};
+*/
+Health::Health(std::string_view instance_name, std::unique_ptr<struct healthd_config>&& config)
+    : instance_name_(instance_name),
+      healthd_config_(std::move(config)),
+      death_recipient_(AIBinder_DeathRecipient_new(&OnCallbackDiedWrapped)) {
+    battery_monitor_.init(healthd_config_.get());
+}
+
+//
+// Getters.
+//
+
+template <typename T>
+static ndk::ScopedAStatus GetProperty(::android::BatteryMonitor* monitor, int id, T defaultValue,
+                                      T* out) {
+    *out = defaultValue;
+    struct ::android::BatteryProperty prop;
+    ::android::status_t err = monitor->getProperty(static_cast<int>(id), &prop);
+    if (err == ::android::OK) {
+        *out = static_cast<T>(prop.valueInt64);
+    } else {
+        LOG(DEBUG) << "getProperty(" << id << ")"
+                   << " fails: (" << err << ") " << ::android::statusToString(err);
+    }
+
+    switch (err) {
+        case ::android::OK:
+            return ndk::ScopedAStatus::ok();
+        case ::android::NAME_NOT_FOUND:
+            return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+        default:
+            return ndk::ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                    IHealth::STATUS_UNKNOWN, ::android::statusToString(err).c_str());
+    }
+}
+
+ndk::ScopedAStatus Health::getChargeCounterUah(int32_t* out) {
+    return GetProperty<int32_t>(&battery_monitor_, ::android::BATTERY_PROP_CHARGE_COUNTER, 0, out);
+}
+
+ndk::ScopedAStatus Health::getCurrentNowMicroamps(int32_t* out) {
+    return GetProperty<int32_t>(&battery_monitor_, ::android::BATTERY_PROP_CURRENT_NOW, 0, out);
+}
+
+ndk::ScopedAStatus Health::getCurrentAverageMicroamps(int32_t* out) {
+    return GetProperty<int32_t>(&battery_monitor_, ::android::BATTERY_PROP_CURRENT_AVG, 0, out);
+}
+
+ndk::ScopedAStatus Health::getCapacity(int32_t* out) {
+    return GetProperty<int32_t>(&battery_monitor_, ::android::BATTERY_PROP_CAPACITY, 0, out);
+}
+
+ndk::ScopedAStatus Health::getEnergyCounterNwh(int64_t* out) {
+    return GetProperty<int64_t>(&battery_monitor_, ::android::BATTERY_PROP_ENERGY_COUNTER, 0, out);
+}
+
+ndk::ScopedAStatus Health::getChargeStatus(BatteryStatus* out) {
+    return GetProperty(&battery_monitor_, ::android::BATTERY_PROP_BATTERY_STATUS,
+                       BatteryStatus::UNKNOWN, out);
+}
+
+ndk::ScopedAStatus Health::getDiskStats(std::vector<DiskStats>*) {
+    // This implementation does not support DiskStats. An implementation may extend this
+    // class and override this function to support disk stats.
+    return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+}
+
+ndk::ScopedAStatus Health::getStorageInfo(std::vector<StorageInfo>*) {
+    // This implementation does not support StorageInfo. An implementation may extend this
+    // class and override this function to support storage info.
+    return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+}
+
+ndk::ScopedAStatus Health::getHealthInfo(HealthInfo* out) {
+    battery_monitor_.updateValues();
+
+    // TODO(b/177269435): BatteryMonitor should store AIDL HealthInfo instead.
+    auto health_info_2_1 = battery_monitor_.getHealthInfo_2_1();
+    if (!::android::h2a::translate(health_info_2_1, out)) {
+        return ndk::ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                IHealth::STATUS_UNKNOWN, "Cannot translate HIDL HealthInfo to AIDL");
+    }
+
+    // Fill in storage infos; these aren't retrieved by BatteryMonitor.
+    if (auto res = getStorageInfo(&out->storageInfos); !res.isOk()) {
+        if (res.getServiceSpecificError() == 0 &&
+            res.getExceptionCode() != EX_UNSUPPORTED_OPERATION) {
+            return ndk::ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                    IHealth::STATUS_UNKNOWN,
+                    ("getStorageInfo fails: " + res.getDescription()).c_str());
+        }
+        LOG(DEBUG) << "getHealthInfo: getStorageInfo fails with service-specific error, clearing: "
+                   << res.getDescription();
+        out->storageInfos = {};
+    }
+    if (auto res = getDiskStats(&out->diskStats); !res.isOk()) {
+        if (res.getServiceSpecificError() == 0 &&
+            res.getExceptionCode() != EX_UNSUPPORTED_OPERATION) {
+            return ndk::ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                    IHealth::STATUS_UNKNOWN,
+                    ("getDiskStats fails: " + res.getDescription()).c_str());
+        }
+        LOG(DEBUG) << "getHealthInfo: getDiskStats fails with service-specific error, clearing: "
+                   << res.getDescription();
+        out->diskStats = {};
+    }
+
+    // A subclass may want to update health info struct before returning it.
+    UpdateHealthInfo(out);
+
+    return ndk::ScopedAStatus::ok();
+}
+
+binder_status_t Health::dump(int fd, const char**, uint32_t) {
+    battery_monitor_.dumpState(fd);
+
+    ::android::base::WriteStringToFd("\ngetHealthInfo -> ", fd);
+    HealthInfo health_info;
+    auto res = getHealthInfo(&health_info);
+    if (res.isOk()) {
+        ::android::base::WriteStringToFd(health_info.toString(), fd);
+    } else {
+        ::android::base::WriteStringToFd(res.getDescription(), fd);
+    }
+
+    fsync(fd);
+    return STATUS_OK;
+}
+
+std::optional<bool> Health::ShouldKeepScreenOn() {
+    if (!healthd_config_->screen_on) {
+        return std::nullopt;
+    }
+
+    HealthInfo health_info;
+    auto res = getHealthInfo(&health_info);
+    if (!res.isOk()) {
+        return std::nullopt;
+    }
+
+    ::android::BatteryProperties props = {};
+    convert(health_info, &props);
+    return healthd_config_->screen_on(&props);
+}
+
+namespace {
+bool IsDeadObjectLogged(const ndk::ScopedAStatus& ret) {
+    if (ret.isOk()) return false;
+    if (ret.getStatus() == ::STATUS_DEAD_OBJECT) return true;
+    LOG(ERROR) << "Cannot call healthInfoChanged on callback: " << ret.getDescription();
+    return false;
+}
+}  // namespace
+
+//
+// Subclass helpers / overrides
+//
+
+void Health::UpdateHealthInfo(HealthInfo* /* health_info */) {
+    /*
+        // Sample code for a subclass to implement this:
+        // If you need to modify values (e.g. batteryChargeTimeToFullNowSeconds), do it here.
+        health_info->batteryChargeTimeToFullNowSeconds = calculate_charge_time_seconds();
+
+        // If you need to call healthd_board_battery_update, modify its signature
+        // and implementation to operate on HealthInfo directly, then call:
+        healthd_board_battery_update(health_info);
+    */
+}
+
+//
+// Methods that handle callbacks.
+//
+
+ndk::ScopedAStatus Health::registerCallback(const std::shared_ptr<IHealthInfoCallback>& callback) {
+    if (callback == nullptr) {
+        // For now, this shouldn't happen because argument is not nullable.
+        return ndk::ScopedAStatus::fromExceptionCode(EX_NULL_POINTER);
+    }
+
+    {
+        std::lock_guard<decltype(callbacks_lock_)> lock(callbacks_lock_);
+        callbacks_.emplace_back(LinkedCallback::Make(ref<Health>(), callback));
+        // unlock
+    }
+
+    HealthInfo health_info;
+    if (auto res = getHealthInfo(&health_info); !res.isOk()) {
+        LOG(WARNING) << "Cannot call getHealthInfo: " << res.getDescription();
+        // No health info to send, so return early.
+        return ndk::ScopedAStatus::ok();
+    }
+
+    if (auto res = callback->healthInfoChanged(health_info); IsDeadObjectLogged(res)) {
+        (void)unregisterCallback(callback);
+    }
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus Health::unregisterCallback(
+        const std::shared_ptr<IHealthInfoCallback>& callback) {
+    if (callback == nullptr) {
+        // For now, this shouldn't happen because argument is not nullable.
+        return ndk::ScopedAStatus::fromExceptionCode(EX_NULL_POINTER);
+    }
+
+    std::lock_guard<decltype(callbacks_lock_)> lock(callbacks_lock_);
+
+    auto matches = [callback](const auto& linked) {
+        return linked->callback() == callback;  // compares shared_ptr
+    };
+    auto it = std::remove_if(callbacks_.begin(), callbacks_.end(), matches);
+    bool removed = (it != callbacks_.end());
+    callbacks_.erase(it, callbacks_.end());  // calls unlinkToDeath on deleted callbacks.
+    return removed ? ndk::ScopedAStatus::ok()
+                   : ndk::ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+}
+
+// A combination of the HIDL version
+//   android::hardware::health::V2_1::implementation::Health::update() and
+//   android::hardware::health::V2_1::implementation::BinderHealth::update()
+ndk::ScopedAStatus Health::update() {
+    HealthInfo health_info;
+    if (auto res = getHealthInfo(&health_info); !res.isOk()) {
+        LOG(DEBUG) << "Cannot call getHealthInfo for update(): " << res.getDescription();
+        // Propagate service specific errors. If there's none, report unknown error.
+        if (res.getServiceSpecificError() != 0 ||
+            res.getExceptionCode() == EX_UNSUPPORTED_OPERATION) {
+            return res;
+        }
+        return ndk::ScopedAStatus::fromServiceSpecificErrorWithMessage(
+                IHealth::STATUS_UNKNOWN, res.getDescription().c_str());
+    }
+    battery_monitor_.logValues();
+    OnHealthInfoChanged(health_info);
+    return ndk::ScopedAStatus::ok();
+}
+
+void Health::OnHealthInfoChanged(const HealthInfo& health_info) {
+    // Notify all callbacks
+    std::unique_lock<decltype(callbacks_lock_)> lock(callbacks_lock_);
+    // is_dead notifies a callback and return true if it is dead.
+    auto is_dead = [&](const auto& linked) {
+        auto res = linked->callback()->healthInfoChanged(health_info);
+        return IsDeadObjectLogged(res);
+    };
+    auto it = std::remove_if(callbacks_.begin(), callbacks_.end(), is_dead);
+    callbacks_.erase(it, callbacks_.end());  // calls unlinkToDeath on deleted callbacks.
+    lock.unlock();
+
+    // Let HalHealthLoop::OnHealthInfoChanged() adjusts uevent / wakealarm periods
+}
+
+void Health::BinderEvent(uint32_t /*epevents*/) {
+    if (binder_fd_ >= 0) {
+        ABinderProcess_handlePolledCommands();
+    }
+}
+
+void Health::OnInit(HalHealthLoop* hal_health_loop, struct healthd_config* config) {
+    LOG(INFO) << instance_name_ << " instance initializing with healthd_config...";
+
+    // Similar to HIDL's android::hardware::health::V2_1::implementation::HalHealthLoop::Init,
+    // copy configuration parameters to |config| for HealthLoop (e.g. uevent / wake alarm periods)
+    *config = *healthd_config_.get();
+
+    binder_status_t status = ABinderProcess_setupPolling(&binder_fd_);
+
+    if (status == ::STATUS_OK && binder_fd_ >= 0) {
+        std::shared_ptr<Health> thiz = ref<Health>();
+        auto binder_event = [thiz](auto*, uint32_t epevents) { thiz->BinderEvent(epevents); };
+        if (hal_health_loop->RegisterEvent(binder_fd_, binder_event, EVENT_NO_WAKEUP_FD) != 0) {
+            PLOG(ERROR) << instance_name_ << " instance: Register for binder events failed";
+        }
+    }
+
+    std::string health_name = IHealth::descriptor + "/"s + instance_name_;
+    CHECK_EQ(STATUS_OK, AServiceManager_addService(this->asBinder().get(), health_name.c_str()))
+            << instance_name_ << ": Failed to register HAL";
+
+    LOG(INFO) << instance_name_ << ": Hal init done";
+}
+
+// Unlike hwbinder, for binder, there's no need to explicitly call flushCommands()
+// in PrepareToWait(). See b/139697085.
+
+}  // namespace aidl::android::hardware::health
diff --git a/health/aidl/default/LinkedCallback.cpp b/health/aidl/default/LinkedCallback.cpp
new file mode 100644
index 0000000..2985ffe
--- /dev/null
+++ b/health/aidl/default/LinkedCallback.cpp
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android/binder_ibinder.h>
+
+#include <health-impl/Health.h>
+#include <utils/Errors.h>
+
+#include "LinkedCallback.h"
+
+namespace aidl::android::hardware::health {
+
+std::unique_ptr<LinkedCallback> LinkedCallback::Make(
+        std::shared_ptr<Health> service, std::shared_ptr<IHealthInfoCallback> callback) {
+    std::unique_ptr<LinkedCallback> ret(new LinkedCallback());
+    binder_status_t linkRet =
+            AIBinder_linkToDeath(callback->asBinder().get(), service->death_recipient_.get(),
+                                 reinterpret_cast<void*>(ret.get()));
+    if (linkRet != ::STATUS_OK) {
+        LOG(WARNING) << __func__ << "Cannot link to death: " << linkRet;
+        return nullptr;
+    }
+    ret->service_ = service;
+    ret->callback_ = std::move(callback);
+    return ret;
+}
+
+LinkedCallback::LinkedCallback() = default;
+
+LinkedCallback::~LinkedCallback() {
+    if (callback_ == nullptr) {
+        return;
+    }
+    auto status =
+            AIBinder_unlinkToDeath(callback_->asBinder().get(), service()->death_recipient_.get(),
+                                   reinterpret_cast<void*>(this));
+    if (status != STATUS_OK && status != STATUS_DEAD_OBJECT) {
+        LOG(WARNING) << __func__ << "Cannot unlink to death: " << ::android::statusToString(status);
+    }
+}
+
+std::shared_ptr<Health> LinkedCallback::service() {
+    auto service_sp = service_.lock();
+    CHECK_NE(nullptr, service_sp);
+    return service_sp;
+}
+
+void LinkedCallback::OnCallbackDied() {
+    service()->unregisterCallback(callback_);
+}
+
+}  // namespace aidl::android::hardware::health
diff --git a/health/aidl/default/LinkedCallback.h b/health/aidl/default/LinkedCallback.h
new file mode 100644
index 0000000..82490a7
--- /dev/null
+++ b/health/aidl/default/LinkedCallback.h
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <memory>
+
+#include <aidl/android/hardware/health/IHealthInfoCallback.h>
+#include <android-base/macros.h>
+#include <android/binder_auto_utils.h>
+
+#include <health-impl/Health.h>
+
+namespace aidl::android::hardware::health {
+
+// Type of the cookie pointer in linkToDeath.
+// A (Health, IHealthInfoCallback) tuple.
+class LinkedCallback {
+  public:
+    // Automatically linkToDeath upon construction with the returned object as the cookie.
+    // service->death_reciepient() should be from CreateDeathRecipient().
+    // Not using a strong reference to |service| to avoid circular reference. The lifetime
+    // of |service| must be longer than this LinkedCallback object.
+    static std::unique_ptr<LinkedCallback> Make(std::shared_ptr<Health> service,
+                                                std::shared_ptr<IHealthInfoCallback> callback);
+
+    // Automatically unlinkToDeath upon destruction. So, it is always safe to reinterpret_cast
+    // the cookie back to the LinkedCallback object.
+    ~LinkedCallback();
+
+    // The wrapped IHealthInfoCallback object.
+    const std::shared_ptr<IHealthInfoCallback>& callback() const { return callback_; }
+
+    // On callback died, unreigster it from the service.
+    void OnCallbackDied();
+
+  private:
+    LinkedCallback();
+    DISALLOW_COPY_AND_ASSIGN(LinkedCallback);
+
+    std::shared_ptr<Health> service();
+
+    std::weak_ptr<Health> service_;
+    std::shared_ptr<IHealthInfoCallback> callback_;
+};
+
+}  // namespace aidl::android::hardware::health
diff --git a/health/aidl/default/android.hardware.health-service.example.rc b/health/aidl/default/android.hardware.health-service.example.rc
new file mode 100644
index 0000000..b393c58
--- /dev/null
+++ b/health/aidl/default/android.hardware.health-service.example.rc
@@ -0,0 +1,6 @@
+service vendor.health-default /vendor/bin/hw/android.hardware.health-service.example
+    class hal
+    user system
+    group system
+    capabilities WAKE_ALARM BLOCK_SUSPEND
+    file /dev/kmsg w
diff --git a/health/aidl/default/android.hardware.health-service.example.xml b/health/aidl/default/android.hardware.health-service.example.xml
new file mode 100644
index 0000000..98026cb
--- /dev/null
+++ b/health/aidl/default/android.hardware.health-service.example.xml
@@ -0,0 +1,7 @@
+<manifest version="1.0" type="device">
+    <hal format="aidl">
+        <name>android.hardware.health</name>
+        <version>1</version>
+        <fqname>IHealth/default</fqname>
+    </hal>
+</manifest>
diff --git a/health/aidl/default/health-convert.cpp b/health/aidl/default/health-convert.cpp
new file mode 100644
index 0000000..b5251f4
--- /dev/null
+++ b/health/aidl/default/health-convert.cpp
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "health-convert.h"
+
+namespace aidl::android::hardware::health {
+
+void convert(const HealthInfo& info, struct ::android::BatteryProperties* p) {
+    p->chargerAcOnline = info.chargerAcOnline;
+    p->chargerUsbOnline = info.chargerUsbOnline;
+    p->chargerWirelessOnline = info.chargerWirelessOnline;
+    p->maxChargingCurrent = info.maxChargingCurrentMicroamps;
+    p->maxChargingVoltage = info.maxChargingVoltageMicrovolts;
+    p->batteryStatus = static_cast<int>(info.batteryStatus);
+    p->batteryHealth = static_cast<int>(info.batteryHealth);
+    p->batteryPresent = info.batteryPresent;
+    p->batteryLevel = info.batteryLevel;
+    p->batteryVoltage = info.batteryVoltageMillivolts;
+    p->batteryTemperature = info.batteryTemperatureTenthsCelsius;
+    p->batteryCurrent = info.batteryCurrentMicroamps;
+    p->batteryCycleCount = info.batteryCycleCount;
+    p->batteryFullCharge = info.batteryFullChargeUah;
+    p->batteryChargeCounter = info.batteryChargeCounterUah;
+    p->batteryTechnology = ::android::String8(info.batteryTechnology.c_str());
+}
+
+}  // namespace aidl::android::hardware::health
diff --git a/health/aidl/default/health-convert.h b/health/aidl/default/health-convert.h
new file mode 100644
index 0000000..179ffc4
--- /dev/null
+++ b/health/aidl/default/health-convert.h
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/health/HealthInfo.h>
+#include <batteryservice/BatteryService.h>
+#include <healthd/healthd.h>
+
+// Conversion between healthd types and AIDL health HAL types. Note that most
+// of the conversion loses information, because these types have a different
+// set of information.
+
+namespace aidl::android::hardware::health {
+
+void convert(const HealthInfo& info, struct ::android::BatteryProperties* out);
+
+}  // namespace aidl::android::hardware::health
diff --git a/health/aidl/default/include/health-impl/HalHealthLoop.h b/health/aidl/default/include/health-impl/HalHealthLoop.h
new file mode 100644
index 0000000..c46aaa4
--- /dev/null
+++ b/health/aidl/default/include/health-impl/HalHealthLoop.h
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <memory>
+#include <optional>
+
+#include <aidl/android/hardware/health/IHealth.h>
+#include <health/HealthLoop.h>
+
+namespace aidl::android::hardware::health {
+
+class HalHealthLoop;
+
+class HalHealthLoopCallback {
+  public:
+    virtual ~HalHealthLoopCallback() = default;
+
+    // Called by HalHealthLoop::Init
+    virtual void OnInit(HalHealthLoop* hal_health_loop, struct healthd_config* config) = 0;
+    // Called by HalHealthLoop::Heartbeat
+    virtual void OnHeartbeat(){};
+    // Called by HalHealthLoop::PrepareToWait
+    virtual int OnPrepareToWait() { return -1; }
+    // Called by HalHealthLoop::ScheduleBatteryUpdate
+    virtual void OnHealthInfoChanged(const HealthInfo&) {}
+};
+
+// AIDL version of android::hardware::health::V2_1::implementation::HalHealthLoop.
+// An implementation of HealthLoop for using a given health HAL.
+class HalHealthLoop final : public ::android::hardware::health::HealthLoop {
+  public:
+    // Caller must ensure that the lifetime of service_ is not shorter than this object.
+    HalHealthLoop(std::shared_ptr<IHealth> service, std::shared_ptr<HalHealthLoopCallback> callback)
+        : service_(std::move(service)), callback_(std::move(callback)) {}
+
+    using HealthLoop::RegisterEvent;
+
+    bool charger_online() const { return charger_online_; }
+
+  protected:
+    virtual void Init(struct healthd_config* config) override;
+    virtual void Heartbeat() override;
+    virtual int PrepareToWait() override;
+    virtual void ScheduleBatteryUpdate() override;
+
+  private:
+    std::shared_ptr<IHealth> service_;
+    std::shared_ptr<HalHealthLoopCallback> callback_;
+    bool charger_online_ = false;
+
+    // Helpers of OnHealthInfoChanged.
+    void set_charger_online(const HealthInfo& health_info);
+
+    // HealthLoop periodically calls ScheduleBatteryUpdate, which calls
+    // OnHealthInfoChanged callback. A subclass of the callback can override
+    // HalHealthLoopCallback::OnHealthInfoChanged to
+    // broadcast the health_info to interested listeners.
+    // This adjust uevents / wakealarm periods.
+    void OnHealthInfoChanged(const HealthInfo& health_info);
+};
+
+}  // namespace aidl::android::hardware::health
diff --git a/health/aidl/default/include/health-impl/Health.h b/health/aidl/default/include/health-impl/Health.h
new file mode 100644
index 0000000..e49f44c
--- /dev/null
+++ b/health/aidl/default/include/health-impl/Health.h
@@ -0,0 +1,113 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <memory>
+#include <optional>
+
+#include <aidl/android/hardware/health/BnHealth.h>
+#include <aidl/android/hardware/health/IHealthInfoCallback.h>
+#include <android/binder_auto_utils.h>
+#include <health-impl/HalHealthLoop.h>
+#include <healthd/BatteryMonitor.h>
+#include <healthd/healthd.h>
+
+namespace aidl::android::hardware::health {
+
+class LinkedCallback;
+
+// AIDL version of android::hardware::health::V2_1::implementation::Health and BinderHealth.
+// There's no need to separate the two in AIDL because AIDL does not support passthrough transport.
+//
+// Instead of inheriting from HalHealthLoop directly, implements the callback interface to
+// HalHealthLoop instead.
+//
+// Sample implementation of health HAL.
+class Health : public BnHealth, public HalHealthLoopCallback {
+  public:
+    // Initialize with |config|.
+    // A subclass may modify |config| before passing it to the parent constructor.
+    // See implementation of Health for code samples.
+    Health(std::string_view instance_name, std::unique_ptr<struct healthd_config>&& config);
+
+    ndk::ScopedAStatus registerCallback(
+            const std::shared_ptr<IHealthInfoCallback>& callback) override;
+    ndk::ScopedAStatus unregisterCallback(
+            const std::shared_ptr<IHealthInfoCallback>& callback) override;
+    ndk::ScopedAStatus update() override;
+
+    // A subclass should not override this. Override UpdateHealthInfo instead.
+    ndk::ScopedAStatus getHealthInfo(HealthInfo* out) override final;
+
+    // A subclass is recommended to override the path in healthd_config in the constructor.
+    // Only override these if there are no suitable kernel interfaces to read these values.
+    ndk::ScopedAStatus getChargeCounterUah(int32_t* out) override;
+    ndk::ScopedAStatus getCurrentNowMicroamps(int32_t* out) override;
+    ndk::ScopedAStatus getCurrentAverageMicroamps(int32_t* out) override;
+    ndk::ScopedAStatus getCapacity(int32_t* out) override;
+    ndk::ScopedAStatus getChargeStatus(BatteryStatus* out) override;
+
+    // A subclass may either override these or provide function pointers in
+    // in healthd_config in the constructor.
+    // Prefer overriding these for efficiency.
+    ndk::ScopedAStatus getEnergyCounterNwh(int64_t* out) override;
+
+    // A subclass may override these for a specific device.
+    // The default implementations return nothing in |out|.
+    ndk::ScopedAStatus getDiskStats(std::vector<DiskStats>* out) override;
+    ndk::ScopedAStatus getStorageInfo(std::vector<StorageInfo>* out) override;
+
+    // A subclass may override these to provide a different implementation.
+    binder_status_t dump(int fd, const char** args, uint32_t num_args) override;
+
+    // HalHealthLoopCallback implementation.
+    void OnInit(HalHealthLoop* hal_health_loop, struct healthd_config* config) override;
+    void OnHealthInfoChanged(const HealthInfo& health_info) override;
+
+    // A subclass may override this if it wants to handle binder events differently.
+    virtual void BinderEvent(uint32_t epevents);
+
+    // A subclass may override this to determine whether screen should be kept on in charger mode.
+    // Default is to invoke healthd_config->screen_on() on the BatteryProperties converted
+    // from getHealthInfo.
+    // Prefer overriding these to providing screen_on in healthd_config in the constructor
+    // for efficiency.
+    virtual std::optional<bool> ShouldKeepScreenOn();
+
+  protected:
+    // A subclass can override this to modify any health info object before
+    // returning to clients. This is similar to healthd_board_battery_update().
+    // By default, it does nothing.
+    // See implementation of Health for code samples.
+    virtual void UpdateHealthInfo(HealthInfo* health_info);
+
+  private:
+    friend LinkedCallback;  // for exposing death_recipient_
+
+    bool unregisterCallbackInternal(std::shared_ptr<IHealthInfoCallback> callback);
+
+    std::string instance_name_;
+    ::android::BatteryMonitor battery_monitor_;
+    std::unique_ptr<struct healthd_config> healthd_config_;
+
+    ndk::ScopedAIBinder_DeathRecipient death_recipient_;
+    int binder_fd_ = -1;
+    std::mutex callbacks_lock_;
+    std::vector<std::unique_ptr<LinkedCallback>> callbacks_;
+};
+
+}  // namespace aidl::android::hardware::health
diff --git a/health/aidl/default/main.cpp b/health/aidl/default/main.cpp
new file mode 100644
index 0000000..014ae34
--- /dev/null
+++ b/health/aidl/default/main.cpp
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android/binder_interface_utils.h>
+#include <health-impl/Health.h>
+#include <health/utils.h>
+
+using aidl::android::hardware::health::HalHealthLoop;
+using aidl::android::hardware::health::Health;
+
+static constexpr const char* gInstanceName = "default";
+
+int main() {
+    // TODO(b/203246116): handle charger
+    // make a default health service
+    auto config = std::make_unique<healthd_config>();
+    ::android::hardware::health::InitHealthdConfig(config.get());
+    auto binder = ndk::SharedRefBase::make<Health>(gInstanceName, std::move(config));
+    auto hal_health_loop = std::make_shared<HalHealthLoop>(binder, binder);
+    return hal_health_loop->StartLoop();
+}
diff --git a/health/aidl/include/android/hardware/health/translate-ndk.h b/health/aidl/include/android/hardware/health/translate-ndk.h
new file mode 100644
index 0000000..2f8fe04
--- /dev/null
+++ b/health/aidl/include/android/hardware/health/translate-ndk.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/health/BatteryCapacityLevel.h>
+#include <aidl/android/hardware/health/DiskStats.h>
+#include <aidl/android/hardware/health/HealthInfo.h>
+#include <aidl/android/hardware/health/StorageInfo.h>
+#include <android/hardware/health/2.0/types.h>
+#include <android/hardware/health/2.1/types.h>
+#include <limits>
+
+namespace android::h2a {
+
+__attribute__((warn_unused_result)) bool translate(
+        const ::android::hardware::health::V2_0::StorageInfo& in,
+        aidl::android::hardware::health::StorageInfo* out);
+__attribute__((warn_unused_result)) bool translate(
+        const ::android::hardware::health::V2_0::DiskStats& in,
+        aidl::android::hardware::health::DiskStats* out);
+__attribute__((warn_unused_result)) bool translate(
+        const ::android::hardware::health::V2_1::HealthInfo& in,
+        aidl::android::hardware::health::HealthInfo* out);
+
+}  // namespace android::h2a
diff --git a/health/utils/libhealthloop/include/health/HealthLoop.h b/health/utils/libhealthloop/include/health/HealthLoop.h
index 693e6cb..54b2740 100644
--- a/health/utils/libhealthloop/include/health/HealthLoop.h
+++ b/health/utils/libhealthloop/include/health/HealthLoop.h
@@ -46,6 +46,12 @@
     // Init is called right after epollfd_ is initialized (so RegisterEvent
     // is allowed) but before other things are initialized (so SetChargerOnline
     // is not allowed.)
+    // The implementation of Init() should pull configuration from the
+    // underlying health HAL (via getHealthConfig()), and store it into
+    // |config|. The implementation may not initialize:
+    // - screen_on, because charger calls getScreenOn() from the HAL directly
+    // - ignorePowerSupplyNames, because it isn't used by any clients of the
+    // health HAL.
     virtual void Init(healthd_config* config) = 0;
     virtual void Heartbeat() = 0;
     virtual int PrepareToWait() = 0;
diff --git a/neuralnetworks/1.0/utils/Android.bp b/neuralnetworks/1.0/utils/Android.bp
index 71a190e..31cdded 100644
--- a/neuralnetworks/1.0/utils/Android.bp
+++ b/neuralnetworks/1.0/utils/Android.bp
@@ -31,6 +31,7 @@
     export_include_dirs: ["include"],
     cflags: ["-Wthread-safety"],
     static_libs: [
+        "libarect",
         "neuralnetworks_types",
         "neuralnetworks_utils_hal_common",
     ],
@@ -40,6 +41,11 @@
     export_static_lib_headers: [
         "neuralnetworks_utils_hal_common",
     ],
+    target: {
+        android: {
+            shared_libs: ["libnativewindow"],
+        },
+    },
 }
 
 cc_test {
@@ -49,7 +55,7 @@
     static_libs: [
         "android.hardware.neuralnetworks@1.0",
         "libgmock",
-        "libneuralnetworks_common_hidl",
+        "libneuralnetworks_common",
         "neuralnetworks_types",
         "neuralnetworks_utils_hal_common",
         "neuralnetworks_utils_hal_1_0",
diff --git a/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Callbacks.h b/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Callbacks.h
index 3b32e1d..1ab9dcb 100644
--- a/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Callbacks.h
+++ b/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Callbacks.h
@@ -24,9 +24,10 @@
 #include <nnapi/Result.h>
 #include <nnapi/Types.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/ProtectCallback.h>
 #include <nnapi/hal/TransferValue.h>
 
+#include "nnapi/hal/1.0/ProtectCallback.h"
+
 // See hardware/interfaces/neuralnetworks/utils/README.md for more information on HIDL interface
 // lifetimes across processes and for protecting asynchronous calls across HIDL.
 
diff --git a/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Conversions.h b/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Conversions.h
index 5d4bdbc..a770d06 100644
--- a/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Conversions.h
+++ b/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Conversions.h
@@ -36,6 +36,7 @@
 GeneralResult<Operation> unvalidatedConvert(const hal::V1_0::Operation& operation);
 GeneralResult<Model::OperandValues> unvalidatedConvert(
         const hardware::hidl_vec<uint8_t>& operandValues);
+GeneralResult<SharedHandle> unvalidatedConvert(const hardware::hidl_handle& handle);
 GeneralResult<SharedMemory> unvalidatedConvert(const hardware::hidl_memory& memory);
 GeneralResult<Model> unvalidatedConvert(const hal::V1_0::Model& model);
 GeneralResult<Request::Argument> unvalidatedConvert(
@@ -65,6 +66,7 @@
 nn::GeneralResult<Operation> unvalidatedConvert(const nn::Operation& operation);
 nn::GeneralResult<hidl_vec<uint8_t>> unvalidatedConvert(
         const nn::Model::OperandValues& operandValues);
+nn::GeneralResult<hidl_handle> unvalidatedConvert(const nn::SharedHandle& handle);
 nn::GeneralResult<hidl_memory> unvalidatedConvert(const nn::SharedMemory& memory);
 nn::GeneralResult<Model> unvalidatedConvert(const nn::Model& model);
 nn::GeneralResult<RequestArgument> unvalidatedConvert(const nn::Request::Argument& requestArgument);
diff --git a/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Device.h b/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Device.h
index db3b2ad..0a6ca3e 100644
--- a/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Device.h
+++ b/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Device.h
@@ -24,7 +24,8 @@
 #include <nnapi/Result.h>
 #include <nnapi/Types.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/ProtectCallback.h>
+
+#include "nnapi/hal/1.0/ProtectCallback.h"
 
 #include <functional>
 #include <memory>
diff --git a/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Execution.h b/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Execution.h
index e201e25..66497c2 100644
--- a/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Execution.h
+++ b/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Execution.h
@@ -22,9 +22,9 @@
 #include <nnapi/Result.h>
 #include <nnapi/Types.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/ProtectCallback.h>
 
 #include "PreparedModel.h"
+#include "nnapi/hal/1.0/ProtectCallback.h"
 
 #include <memory>
 #include <utility>
diff --git a/neuralnetworks/utils/common/include/nnapi/hal/HandleError.h b/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/HandleError.h
similarity index 79%
rename from neuralnetworks/utils/common/include/nnapi/hal/HandleError.h
rename to neuralnetworks/1.0/utils/include/nnapi/hal/1.0/HandleError.h
index e51f916..8e02633 100644
--- a/neuralnetworks/utils/common/include/nnapi/hal/HandleError.h
+++ b/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/HandleError.h
@@ -14,8 +14,8 @@
  * limitations under the License.
  */
 
-#ifndef ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_COMMON_HANDLE_ERROR_H
-#define ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_COMMON_HANDLE_ERROR_H
+#ifndef ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_1_0_UTILS_HANDLE_ERROR_H
+#define ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_1_0_UTILS_HANDLE_ERROR_H
 
 #include <android/hidl/base/1.0/IBase.h>
 #include <hidl/HidlSupport.h>
@@ -27,7 +27,7 @@
 namespace android::hardware::neuralnetworks::utils {
 
 template <typename Type>
-nn::GeneralResult<Type> handleTransportError(const hardware::Return<Type>& ret) {
+nn::GeneralResult<Type> handleTransportError(const Return<Type>& ret) {
     if (ret.isDeadObject()) {
         return nn::error(nn::ErrorStatus::DEAD_OBJECT)
                << "Return<>::isDeadObject returned true: " << ret.description();
@@ -52,13 +52,13 @@
         std::move(result).value();                                                           \
     })
 
-#define HANDLE_HAL_STATUS(status)                                       \
-    if (const auto canonical = ::android::nn::convert(status).value_or( \
-                ::android::nn::ErrorStatus::GENERAL_FAILURE);           \
-        canonical == ::android::nn::ErrorStatus::NONE) {                \
-    } else                                                              \
+#define HANDLE_STATUS_HIDL(status)                                                            \
+    if (const ::android::nn::ErrorStatus canonical = ::android::nn::convert(status).value_or( \
+                ::android::nn::ErrorStatus::GENERAL_FAILURE);                                 \
+        canonical == ::android::nn::ErrorStatus::NONE) {                                      \
+    } else                                                                                    \
         return NN_ERROR(canonical)
 
 }  // namespace android::hardware::neuralnetworks::utils
 
-#endif  // ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_COMMON_HANDLE_ERROR_H
+#endif  // ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_1_0_UTILS_HANDLE_ERROR_H
diff --git a/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/PreparedModel.h b/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/PreparedModel.h
index 48be595..bdb5b54 100644
--- a/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/PreparedModel.h
+++ b/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/PreparedModel.h
@@ -22,7 +22,8 @@
 #include <nnapi/Result.h>
 #include <nnapi/Types.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/ProtectCallback.h>
+
+#include "nnapi/hal/1.0/ProtectCallback.h"
 
 #include <memory>
 #include <tuple>
diff --git a/neuralnetworks/utils/common/include/nnapi/hal/ProtectCallback.h b/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/ProtectCallback.h
similarity index 93%
rename from neuralnetworks/utils/common/include/nnapi/hal/ProtectCallback.h
rename to neuralnetworks/1.0/utils/include/nnapi/hal/1.0/ProtectCallback.h
index 05110bc..7418cfa 100644
--- a/neuralnetworks/utils/common/include/nnapi/hal/ProtectCallback.h
+++ b/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/ProtectCallback.h
@@ -14,8 +14,8 @@
  * limitations under the License.
  */
 
-#ifndef ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_COMMON_PROTECT_CALLBACK_H
-#define ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_COMMON_PROTECT_CALLBACK_H
+#ifndef ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_1_0_UTILS_PROTECT_CALLBACK_H
+#define ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_1_0_UTILS_PROTECT_CALLBACK_H
 
 #include <android-base/scopeguard.h>
 #include <android-base/thread_annotations.h>
@@ -98,4 +98,4 @@
 
 }  // namespace android::hardware::neuralnetworks::utils
 
-#endif  // ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_COMMON_PROTECT_CALLBACK_H
+#endif  // ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_1_0_UTILS_PROTECT_CALLBACK_H
diff --git a/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Utils.h b/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Utils.h
index 360b338..5c1480e 100644
--- a/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Utils.h
+++ b/neuralnetworks/1.0/utils/include/nnapi/hal/1.0/Utils.h
@@ -25,7 +25,6 @@
 #include <nnapi/TypeUtils.h>
 #include <nnapi/Types.h>
 #include <nnapi/Validation.h>
-#include <nnapi/hal/HandleError.h>
 
 namespace android::hardware::neuralnetworks::V1_0::utils {
 
diff --git a/neuralnetworks/1.0/utils/src/Callbacks.cpp b/neuralnetworks/1.0/utils/src/Callbacks.cpp
index ea3ea56..7b478ae 100644
--- a/neuralnetworks/1.0/utils/src/Callbacks.cpp
+++ b/neuralnetworks/1.0/utils/src/Callbacks.cpp
@@ -17,7 +17,9 @@
 #include "Callbacks.h"
 
 #include "Conversions.h"
+#include "HandleError.h"
 #include "PreparedModel.h"
+#include "ProtectCallback.h"
 #include "Utils.h"
 
 #include <android/hardware/neuralnetworks/1.0/IExecutionCallback.h>
@@ -27,8 +29,6 @@
 #include <nnapi/Result.h>
 #include <nnapi/Types.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/HandleError.h>
-#include <nnapi/hal/ProtectCallback.h>
 #include <nnapi/hal/TransferValue.h>
 
 #include <utility>
@@ -40,19 +40,19 @@
 
 nn::GeneralResult<std::vector<bool>> supportedOperationsCallback(
         ErrorStatus status, const hidl_vec<bool>& supportedOperations) {
-    HANDLE_HAL_STATUS(status) << "get supported operations failed with " << toString(status);
+    HANDLE_STATUS_HIDL(status) << "get supported operations failed with " << toString(status);
     return supportedOperations;
 }
 
 nn::GeneralResult<nn::SharedPreparedModel> prepareModelCallback(
         ErrorStatus status, const sp<IPreparedModel>& preparedModel) {
-    HANDLE_HAL_STATUS(status) << "model preparation failed with " << toString(status);
+    HANDLE_STATUS_HIDL(status) << "model preparation failed with " << toString(status);
     return NN_TRY(PreparedModel::create(preparedModel));
 }
 
 nn::ExecutionResult<std::pair<std::vector<nn::OutputShape>, nn::Timing>> executionCallback(
         ErrorStatus status) {
-    HANDLE_HAL_STATUS(status) << "execution failed with " << toString(status);
+    HANDLE_STATUS_HIDL(status) << "execution failed with " << toString(status);
     return {};
 }
 
diff --git a/neuralnetworks/1.0/utils/src/Conversions.cpp b/neuralnetworks/1.0/utils/src/Conversions.cpp
index c0498eb..daa10fd 100644
--- a/neuralnetworks/1.0/utils/src/Conversions.cpp
+++ b/neuralnetworks/1.0/utils/src/Conversions.cpp
@@ -37,6 +37,11 @@
 
 #include "Utils.h"
 
+#ifdef __ANDROID__
+#include <android/hardware_buffer.h>
+#include <vndk/hardware_buffer.h>
+#endif  // __ANDROID__
+
 namespace {
 
 template <typename Type>
@@ -49,6 +54,7 @@
 namespace android::nn {
 namespace {
 
+using hardware::hidl_handle;
 using hardware::hidl_memory;
 using hardware::hidl_vec;
 
@@ -74,6 +80,121 @@
     return canonical;
 }
 
+nn::GeneralResult<nn::Memory::Unknown::Handle> unknownHandleFromNativeHandle(
+        const native_handle_t* handle) {
+    if (handle == nullptr) {
+        return NN_ERROR() << "unknownHandleFromNativeHandle failed because handle is nullptr";
+    }
+
+    std::vector<base::unique_fd> fds =
+            NN_TRY(nn::dupFds(handle->data + 0, handle->data + handle->numFds));
+
+    std::vector<int> ints(handle->data + handle->numFds,
+                          handle->data + handle->numFds + handle->numInts);
+
+    return nn::Memory::Unknown::Handle{.fds = std::move(fds), .ints = std::move(ints)};
+}
+
+nn::GeneralResult<nn::SharedMemory> createSharedMemoryFromHidlMemory(const hidl_memory& memory) {
+    CHECK_LE(memory.size(), std::numeric_limits<size_t>::max());
+    if (!memory.valid()) {
+        return NN_ERROR() << "Unable to convert invalid hidl_memory";
+    }
+
+    if (memory.name() == "ashmem") {
+        if (memory.handle()->numFds != 1) {
+            return NN_ERROR() << "Unable to convert invalid ashmem memory object with "
+                              << memory.handle()->numFds << " numFds, but expected 1";
+        }
+        if (memory.handle()->numInts != 0) {
+            return NN_ERROR() << "Unable to convert invalid ashmem memory object with "
+                              << memory.handle()->numInts << " numInts, but expected 0";
+        }
+        auto handle = nn::Memory::Ashmem{
+                .fd = NN_TRY(nn::dupFd(memory.handle()->data[0])),
+                .size = static_cast<size_t>(memory.size()),
+        };
+        return std::make_shared<const nn::Memory>(nn::Memory{.handle = std::move(handle)});
+    }
+
+    if (memory.name() == "mmap_fd") {
+        if (memory.handle()->numFds != 1) {
+            return NN_ERROR() << "Unable to convert invalid mmap_fd memory object with "
+                              << memory.handle()->numFds << " numFds, but expected 1";
+        }
+        if (memory.handle()->numInts != 3) {
+            return NN_ERROR() << "Unable to convert invalid mmap_fd memory object with "
+                              << memory.handle()->numInts << " numInts, but expected 3";
+        }
+
+        const int fd = memory.handle()->data[0];
+        const int prot = memory.handle()->data[1];
+        const int lower = memory.handle()->data[2];
+        const int higher = memory.handle()->data[3];
+        const size_t offset = nn::getOffsetFromInts(lower, higher);
+
+        return nn::createSharedMemoryFromFd(static_cast<size_t>(memory.size()), prot, fd, offset);
+    }
+
+    if (memory.name() != "hardware_buffer_blob") {
+        auto handle = nn::Memory::Unknown{
+                .handle = NN_TRY(unknownHandleFromNativeHandle(memory.handle())),
+                .size = static_cast<size_t>(memory.size()),
+                .name = memory.name(),
+        };
+        return std::make_shared<const nn::Memory>(nn::Memory{.handle = std::move(handle)});
+    }
+
+#ifdef __ANDROID__
+    constexpr auto roundUpToMultiple = [](uint32_t value, uint32_t multiple) -> uint32_t {
+        return (value + multiple - 1) / multiple * multiple;
+    };
+
+    const auto size = memory.size();
+    const auto format = AHARDWAREBUFFER_FORMAT_BLOB;
+    const auto usage = AHARDWAREBUFFER_USAGE_CPU_READ_OFTEN | AHARDWAREBUFFER_USAGE_CPU_WRITE_OFTEN;
+    const uint32_t width = size;
+    const uint32_t height = 1;  // height is always 1 for BLOB mode AHardwareBuffer.
+    const uint32_t layers = 1;  // layers is always 1 for BLOB mode AHardwareBuffer.
+
+    // AHardwareBuffer_createFromHandle() might fail because an allocator
+    // expects a specific stride value. In that case, we try to guess it by
+    // aligning the width to small powers of 2.
+    // TODO(b/174120849): Avoid stride assumptions.
+    AHardwareBuffer* hardwareBuffer = nullptr;
+    status_t status = UNKNOWN_ERROR;
+    for (uint32_t alignment : {1, 4, 32, 64, 128, 2, 8, 16}) {
+        const uint32_t stride = roundUpToMultiple(width, alignment);
+        AHardwareBuffer_Desc desc{
+                .width = width,
+                .height = height,
+                .layers = layers,
+                .format = format,
+                .usage = usage,
+                .stride = stride,
+        };
+        status = AHardwareBuffer_createFromHandle(&desc, memory.handle(),
+                                                  AHARDWAREBUFFER_CREATE_FROM_HANDLE_METHOD_CLONE,
+                                                  &hardwareBuffer);
+        if (status == NO_ERROR) {
+            break;
+        }
+    }
+    if (status != NO_ERROR) {
+        return NN_ERROR(nn::ErrorStatus::GENERAL_FAILURE)
+               << "Can't create AHardwareBuffer from handle. Error: " << status;
+    }
+
+    return nn::createSharedMemoryFromAHWB(hardwareBuffer, /*takeOwnership=*/true);
+#else   // __ANDROID__
+    LOG(FATAL) << "nn::GeneralResult<nn::SharedMemory> createSharedMemoryFromHidlMemory(const "
+                  "hidl_memory& memory): Not Available on Host Build";
+    return (NN_ERROR() << "createSharedMemoryFromHidlMemory failed")
+            .
+            operator nn::GeneralResult<nn::SharedMemory>();
+#endif  // __ANDROID__
+}
+
 }  // anonymous namespace
 
 GeneralResult<OperandType> unvalidatedConvert(const hal::V1_0::OperandType& operandType) {
@@ -146,8 +267,20 @@
     return Model::OperandValues(operandValues.data(), operandValues.size());
 }
 
+GeneralResult<SharedHandle> unvalidatedConvert(const hidl_handle& handle) {
+    if (handle.getNativeHandle() == nullptr) {
+        return nullptr;
+    }
+    if (handle->numFds != 1 || handle->numInts != 0) {
+        return NN_ERROR()
+               << "unvalidatedConvert failed because handle does not only hold a single fd";
+    }
+    auto duplicatedFd = NN_TRY(nn::dupFd(handle->data[0]));
+    return std::make_shared<const Handle>(std::move(duplicatedFd));
+}
+
 GeneralResult<SharedMemory> unvalidatedConvert(const hidl_memory& memory) {
-    return hal::utils::createSharedMemoryFromHidlMemory(memory);
+    return createSharedMemoryFromHidlMemory(memory);
 }
 
 GeneralResult<Model> unvalidatedConvert(const hal::V1_0::Model& model) {
@@ -155,7 +288,7 @@
 
     // Verify number of consumers.
     const auto numberOfConsumers =
-            NN_TRY(hal::utils::countNumberOfConsumers(model.operands.size(), operations));
+            NN_TRY(countNumberOfConsumers(model.operands.size(), operations));
     CHECK(model.operands.size() == numberOfConsumers.size());
     for (size_t i = 0; i < model.operands.size(); ++i) {
         if (model.operands[i].numberOfConsumers != numberOfConsumers[i]) {
@@ -260,6 +393,82 @@
     return utils::unvalidatedConvert(canonical);
 }
 
+nn::GeneralResult<hidl_handle> createNativeHandleFrom(std::vector<base::unique_fd> fds,
+                                                      const std::vector<int32_t>& ints) {
+    constexpr size_t kIntMax = std::numeric_limits<int>::max();
+    CHECK_LE(fds.size(), kIntMax);
+    CHECK_LE(ints.size(), kIntMax);
+    native_handle_t* nativeHandle =
+            native_handle_create(static_cast<int>(fds.size()), static_cast<int>(ints.size()));
+    if (nativeHandle == nullptr) {
+        return NN_ERROR() << "Failed to create native_handle";
+    }
+
+    for (size_t i = 0; i < fds.size(); ++i) {
+        nativeHandle->data[i] = fds[i].release();
+    }
+    std::copy(ints.begin(), ints.end(), nativeHandle->data + nativeHandle->numFds);
+
+    hidl_handle handle;
+    handle.setTo(nativeHandle, /*shouldOwn=*/true);
+    return handle;
+}
+
+nn::GeneralResult<hidl_handle> createNativeHandleFrom(base::unique_fd fd,
+                                                      const std::vector<int32_t>& ints) {
+    std::vector<base::unique_fd> fds;
+    fds.push_back(std::move(fd));
+    return createNativeHandleFrom(std::move(fds), ints);
+}
+
+nn::GeneralResult<hidl_handle> createNativeHandleFrom(const nn::Memory::Unknown::Handle& handle) {
+    std::vector<base::unique_fd> fds = NN_TRY(nn::dupFds(handle.fds.begin(), handle.fds.end()));
+    return createNativeHandleFrom(std::move(fds), handle.ints);
+}
+
+nn::GeneralResult<hidl_memory> createHidlMemoryFrom(const nn::Memory::Ashmem& memory) {
+    auto fd = NN_TRY(nn::dupFd(memory.fd));
+    auto handle = NN_TRY(createNativeHandleFrom(std::move(fd), {}));
+    return hidl_memory("ashmem", std::move(handle), memory.size);
+}
+
+nn::GeneralResult<hidl_memory> createHidlMemoryFrom(const nn::Memory::Fd& memory) {
+    auto fd = NN_TRY(nn::dupFd(memory.fd));
+
+    const auto [lowOffsetBits, highOffsetBits] = nn::getIntsFromOffset(memory.offset);
+    const std::vector<int> ints = {memory.prot, lowOffsetBits, highOffsetBits};
+
+    auto handle = NN_TRY(createNativeHandleFrom(std::move(fd), ints));
+    return hidl_memory("mmap_fd", std::move(handle), memory.size);
+}
+
+nn::GeneralResult<hidl_memory> createHidlMemoryFrom(const nn::Memory::HardwareBuffer& memory) {
+#ifdef __ANDROID__
+    const auto* ahwb = memory.handle.get();
+    AHardwareBuffer_Desc bufferDesc;
+    AHardwareBuffer_describe(ahwb, &bufferDesc);
+
+    const bool isBlob = bufferDesc.format == AHARDWAREBUFFER_FORMAT_BLOB;
+    const size_t size = isBlob ? bufferDesc.width : 0;
+    const char* const name = isBlob ? "hardware_buffer_blob" : "hardware_buffer";
+
+    const native_handle_t* nativeHandle = AHardwareBuffer_getNativeHandle(ahwb);
+    const hidl_handle hidlHandle(nativeHandle);
+    hidl_handle copiedHandle(hidlHandle);
+
+    return hidl_memory(name, std::move(copiedHandle), size);
+#else   // __ANDROID__
+    LOG(FATAL) << "nn::GeneralResult<hidl_memory> createHidlMemoryFrom(const "
+                  "nn::Memory::HardwareBuffer& memory): Not Available on Host Build";
+    (void)memory;
+    return (NN_ERROR() << "createHidlMemoryFrom failed").operator nn::GeneralResult<hidl_memory>();
+#endif  // __ANDROID__
+}
+
+nn::GeneralResult<hidl_memory> createHidlMemoryFrom(const nn::Memory::Unknown& memory) {
+    return hidl_memory(memory.name, NN_TRY(createNativeHandleFrom(memory.handle)), memory.size);
+}
+
 }  // anonymous namespace
 
 nn::GeneralResult<OperandType> unvalidatedConvert(const nn::OperandType& operandType) {
@@ -332,8 +541,19 @@
     return hidl_vec<uint8_t>(operandValues.data(), operandValues.data() + operandValues.size());
 }
 
+nn::GeneralResult<hidl_handle> unvalidatedConvert(const nn::SharedHandle& handle) {
+    if (handle == nullptr) {
+        return {};
+    }
+    base::unique_fd fd = NN_TRY(nn::dupFd(handle->get()));
+    return createNativeHandleFrom(std::move(fd), {});
+}
+
 nn::GeneralResult<hidl_memory> unvalidatedConvert(const nn::SharedMemory& memory) {
-    return hal::utils::createHidlMemoryFromSharedMemory(memory);
+    if (memory == nullptr) {
+        return NN_ERROR() << "Memory must be non-empty";
+    }
+    return std::visit([](const auto& x) { return createHidlMemoryFrom(x); }, memory->handle);
 }
 
 nn::GeneralResult<Model> unvalidatedConvert(const nn::Model& model) {
@@ -346,7 +566,7 @@
 
     // Update number of consumers.
     const auto numberOfConsumers =
-            NN_TRY(hal::utils::countNumberOfConsumers(operands.size(), model.main.operations));
+            NN_TRY(countNumberOfConsumers(operands.size(), model.main.operations));
     CHECK(operands.size() == numberOfConsumers.size());
     for (size_t i = 0; i < operands.size(); ++i) {
         operands[i].numberOfConsumers = numberOfConsumers[i];
diff --git a/neuralnetworks/1.0/utils/src/Device.cpp b/neuralnetworks/1.0/utils/src/Device.cpp
index 93bd81a..49913a2 100644
--- a/neuralnetworks/1.0/utils/src/Device.cpp
+++ b/neuralnetworks/1.0/utils/src/Device.cpp
@@ -18,6 +18,8 @@
 
 #include "Callbacks.h"
 #include "Conversions.h"
+#include "HandleError.h"
+#include "ProtectCallback.h"
 #include "Utils.h"
 
 #include <android/hardware/neuralnetworks/1.0/IDevice.h>
@@ -29,8 +31,6 @@
 #include <nnapi/Result.h>
 #include <nnapi/Types.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/HandleError.h>
-#include <nnapi/hal/ProtectCallback.h>
 #include <nnapi/hal/TransferValue.h>
 
 #include <functional>
@@ -47,7 +47,7 @@
 
 nn::GeneralResult<nn::Capabilities> capabilitiesCallback(ErrorStatus status,
                                                          const Capabilities& capabilities) {
-    HANDLE_HAL_STATUS(status) << "getting capabilities failed with " << toString(status);
+    HANDLE_STATUS_HIDL(status) << "getting capabilities failed with " << toString(status);
     return nn::convert(capabilities);
 }
 
@@ -156,7 +156,7 @@
 
     const auto ret = kDevice->prepareModel(hidlModel, cb);
     const auto status = HANDLE_TRANSPORT_FAILURE(ret);
-    HANDLE_HAL_STATUS(status) << "model preparation failed with " << toString(status);
+    HANDLE_STATUS_HIDL(status) << "model preparation failed with " << toString(status);
 
     return cb->get();
 }
diff --git a/neuralnetworks/1.0/utils/src/Execution.cpp b/neuralnetworks/1.0/utils/src/Execution.cpp
index 7a3216b..6e105a6 100644
--- a/neuralnetworks/1.0/utils/src/Execution.cpp
+++ b/neuralnetworks/1.0/utils/src/Execution.cpp
@@ -18,6 +18,8 @@
 
 #include "Callbacks.h"
 #include "Conversions.h"
+#include "HandleError.h"
+#include "ProtectCallback.h"
 #include "Utils.h"
 
 #include <android/hardware/neuralnetworks/1.0/IPreparedModel.h>
@@ -27,8 +29,6 @@
 #include <nnapi/TypeUtils.h>
 #include <nnapi/Types.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/HandleError.h>
-#include <nnapi/hal/ProtectCallback.h>
 
 #include <memory>
 #include <utility>
diff --git a/neuralnetworks/1.0/utils/src/PreparedModel.cpp b/neuralnetworks/1.0/utils/src/PreparedModel.cpp
index 3060c65..00e7d22 100644
--- a/neuralnetworks/1.0/utils/src/PreparedModel.cpp
+++ b/neuralnetworks/1.0/utils/src/PreparedModel.cpp
@@ -20,6 +20,8 @@
 #include "Callbacks.h"
 #include "Conversions.h"
 #include "Execution.h"
+#include "HandleError.h"
+#include "ProtectCallback.h"
 #include "Utils.h"
 
 #include <android/hardware/neuralnetworks/1.0/IPreparedModel.h>
@@ -28,8 +30,6 @@
 #include <nnapi/Result.h>
 #include <nnapi/Types.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/HandleError.h>
-#include <nnapi/hal/ProtectCallback.h>
 
 #include <memory>
 #include <tuple>
@@ -84,7 +84,7 @@
 
     const auto ret = kPreparedModel->execute(request, cb);
     const auto status = HANDLE_TRANSPORT_FAILURE(ret);
-    HANDLE_HAL_STATUS(status) << "execution failed with " << toString(status);
+    HANDLE_STATUS_HIDL(status) << "execution failed with " << toString(status);
 
     auto result = NN_TRY(cb->get());
     if (relocation.output) {
diff --git a/neuralnetworks/utils/common/src/ProtectCallback.cpp b/neuralnetworks/1.0/utils/src/ProtectCallback.cpp
similarity index 98%
rename from neuralnetworks/utils/common/src/ProtectCallback.cpp
rename to neuralnetworks/1.0/utils/src/ProtectCallback.cpp
index 18e1f3b..89539b5 100644
--- a/neuralnetworks/utils/common/src/ProtectCallback.cpp
+++ b/neuralnetworks/1.0/utils/src/ProtectCallback.cpp
@@ -22,7 +22,8 @@
 #include <android/hidl/base/1.0/IBase.h>
 #include <hidl/HidlSupport.h>
 #include <nnapi/Result.h>
-#include <nnapi/hal/HandleError.h>
+
+#include "HandleError.h"
 
 #include <algorithm>
 #include <functional>
diff --git a/neuralnetworks/1.0/vts/functional/Android.bp b/neuralnetworks/1.0/vts/functional/Android.bp
index ae9ff0a..b33c581 100644
--- a/neuralnetworks/1.0/vts/functional/Android.bp
+++ b/neuralnetworks/1.0/vts/functional/Android.bp
@@ -50,7 +50,7 @@
         "libgmock",
         "libhidlmemory",
         "libneuralnetworks_generated_test_harness",
-        "libneuralnetworks_common_hidl",
+        "libneuralnetworks_utils",
     ],
     header_libs: [
         "libneuralnetworks_headers",
@@ -81,7 +81,7 @@
         "libgmock",
         "libhidlmemory",
         "libneuralnetworks_generated_test_harness",
-        "libneuralnetworks_common_hidl",
+        "libneuralnetworks_utils",
     ],
     whole_static_libs: [
         "neuralnetworks_generated_V1_0_example",
diff --git a/neuralnetworks/1.1/utils/Android.bp b/neuralnetworks/1.1/utils/Android.bp
index 478a742..737ff58 100644
--- a/neuralnetworks/1.1/utils/Android.bp
+++ b/neuralnetworks/1.1/utils/Android.bp
@@ -52,7 +52,7 @@
         "android.hardware.neuralnetworks@1.0",
         "android.hardware.neuralnetworks@1.1",
         "libgmock",
-        "libneuralnetworks_common_hidl",
+        "libneuralnetworks_common",
         "neuralnetworks_types",
         "neuralnetworks_utils_hal_common",
         "neuralnetworks_utils_hal_1_0",
diff --git a/neuralnetworks/1.1/utils/include/nnapi/hal/1.1/Device.h b/neuralnetworks/1.1/utils/include/nnapi/hal/1.1/Device.h
index 5e224b5..d6bd36a 100644
--- a/neuralnetworks/1.1/utils/include/nnapi/hal/1.1/Device.h
+++ b/neuralnetworks/1.1/utils/include/nnapi/hal/1.1/Device.h
@@ -23,8 +23,8 @@
 #include <nnapi/OperandTypes.h>
 #include <nnapi/Result.h>
 #include <nnapi/Types.h>
+#include <nnapi/hal/1.0/ProtectCallback.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/ProtectCallback.h>
 
 #include <functional>
 #include <memory>
diff --git a/neuralnetworks/1.1/utils/include/nnapi/hal/1.1/Utils.h b/neuralnetworks/1.1/utils/include/nnapi/hal/1.1/Utils.h
index 09d9fe8..4660ff7 100644
--- a/neuralnetworks/1.1/utils/include/nnapi/hal/1.1/Utils.h
+++ b/neuralnetworks/1.1/utils/include/nnapi/hal/1.1/Utils.h
@@ -26,7 +26,6 @@
 #include <nnapi/Types.h>
 #include <nnapi/Validation.h>
 #include <nnapi/hal/1.0/Conversions.h>
-#include <nnapi/hal/HandleError.h>
 
 namespace android::hardware::neuralnetworks::V1_1::utils {
 
diff --git a/neuralnetworks/1.1/utils/src/Conversions.cpp b/neuralnetworks/1.1/utils/src/Conversions.cpp
index 467ceb3..5bdbe31 100644
--- a/neuralnetworks/1.1/utils/src/Conversions.cpp
+++ b/neuralnetworks/1.1/utils/src/Conversions.cpp
@@ -100,7 +100,7 @@
 
     // Verify number of consumers.
     const auto numberOfConsumers =
-            NN_TRY(hal::utils::countNumberOfConsumers(model.operands.size(), operations));
+            NN_TRY(countNumberOfConsumers(model.operands.size(), operations));
     CHECK(model.operands.size() == numberOfConsumers.size());
     for (size_t i = 0; i < model.operands.size(); ++i) {
         if (model.operands[i].numberOfConsumers != numberOfConsumers[i]) {
@@ -223,7 +223,7 @@
 
     // Update number of consumers.
     const auto numberOfConsumers =
-            NN_TRY(hal::utils::countNumberOfConsumers(operands.size(), model.main.operations));
+            NN_TRY(countNumberOfConsumers(operands.size(), model.main.operations));
     CHECK(operands.size() == numberOfConsumers.size());
     for (size_t i = 0; i < operands.size(); ++i) {
         operands[i].numberOfConsumers = numberOfConsumers[i];
diff --git a/neuralnetworks/1.1/utils/src/Device.cpp b/neuralnetworks/1.1/utils/src/Device.cpp
index 3197ef4..7d54cab 100644
--- a/neuralnetworks/1.1/utils/src/Device.cpp
+++ b/neuralnetworks/1.1/utils/src/Device.cpp
@@ -29,9 +29,9 @@
 #include <nnapi/Result.h>
 #include <nnapi/Types.h>
 #include <nnapi/hal/1.0/Callbacks.h>
+#include <nnapi/hal/1.0/HandleError.h>
+#include <nnapi/hal/1.0/ProtectCallback.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/HandleError.h>
-#include <nnapi/hal/ProtectCallback.h>
 
 #include <functional>
 #include <memory>
@@ -47,7 +47,7 @@
 
 nn::GeneralResult<nn::Capabilities> capabilitiesCallback(V1_0::ErrorStatus status,
                                                          const Capabilities& capabilities) {
-    HANDLE_HAL_STATUS(status) << "getting capabilities failed with " << toString(status);
+    HANDLE_STATUS_HIDL(status) << "getting capabilities failed with " << toString(status);
     return nn::convert(capabilities);
 }
 
@@ -157,7 +157,7 @@
 
     const auto ret = kDevice->prepareModel_1_1(hidlModel, hidlPreference, cb);
     const auto status = HANDLE_TRANSPORT_FAILURE(ret);
-    HANDLE_HAL_STATUS(status) << "model preparation failed with " << toString(status);
+    HANDLE_STATUS_HIDL(status) << "model preparation failed with " << toString(status);
 
     return cb->get();
 }
diff --git a/neuralnetworks/1.1/vts/functional/Android.bp b/neuralnetworks/1.1/vts/functional/Android.bp
index 4c57788..c001112 100644
--- a/neuralnetworks/1.1/vts/functional/Android.bp
+++ b/neuralnetworks/1.1/vts/functional/Android.bp
@@ -48,7 +48,7 @@
         "libgmock",
         "libhidlmemory",
         "libneuralnetworks_generated_test_harness",
-        "libneuralnetworks_common_hidl",
+        "libneuralnetworks_utils",
     ],
     whole_static_libs: [
         "neuralnetworks_generated_V1_0_example",
diff --git a/neuralnetworks/1.2/utils/Android.bp b/neuralnetworks/1.2/utils/Android.bp
index 2a86a00..4eefb0f 100644
--- a/neuralnetworks/1.2/utils/Android.bp
+++ b/neuralnetworks/1.2/utils/Android.bp
@@ -71,7 +71,7 @@
         "android.hardware.neuralnetworks@1.1",
         "android.hardware.neuralnetworks@1.2",
         "libgmock",
-        "libneuralnetworks_common_hidl",
+        "libneuralnetworks_common",
         "neuralnetworks_types",
         "neuralnetworks_utils_hal_common",
         "neuralnetworks_utils_hal_1_0",
diff --git a/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Callbacks.h b/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Callbacks.h
index ba3c1ba..6dd8138 100644
--- a/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Callbacks.h
+++ b/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Callbacks.h
@@ -27,8 +27,8 @@
 #include <nnapi/Result.h>
 #include <nnapi/Types.h>
 #include <nnapi/hal/1.0/Callbacks.h>
+#include <nnapi/hal/1.0/ProtectCallback.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/ProtectCallback.h>
 #include <nnapi/hal/TransferValue.h>
 
 // See hardware/interfaces/neuralnetworks/utils/README.md for more information on HIDL interface
diff --git a/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Conversions.h b/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Conversions.h
index 272cee7..c3348aa 100644
--- a/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Conversions.h
+++ b/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Conversions.h
@@ -45,7 +45,6 @@
 GeneralResult<Extension> unvalidatedConvert(const hal::V1_2::Extension& extension);
 GeneralResult<Extension::OperandTypeInformation> unvalidatedConvert(
         const hal::V1_2::Extension::OperandTypeInformation& operandTypeInformation);
-GeneralResult<SharedHandle> unvalidatedConvert(const hardware::hidl_handle& handle);
 
 GeneralResult<DeviceType> convert(const hal::V1_2::DeviceType& deviceType);
 GeneralResult<Capabilities> convert(const hal::V1_2::Capabilities& capabilities);
@@ -86,7 +85,6 @@
 nn::GeneralResult<Extension> unvalidatedConvert(const nn::Extension& extension);
 nn::GeneralResult<Extension::OperandTypeInformation> unvalidatedConvert(
         const nn::Extension::OperandTypeInformation& operandTypeInformation);
-nn::GeneralResult<hidl_handle> unvalidatedConvert(const nn::SharedHandle& handle);
 
 nn::GeneralResult<DeviceType> convert(const nn::DeviceType& deviceType);
 nn::GeneralResult<Capabilities> convert(const nn::Capabilities& capabilities);
diff --git a/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Device.h b/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Device.h
index b4bef5e..e7ac172 100644
--- a/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Device.h
+++ b/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Device.h
@@ -23,8 +23,8 @@
 #include <nnapi/OperandTypes.h>
 #include <nnapi/Result.h>
 #include <nnapi/Types.h>
+#include <nnapi/hal/1.0/ProtectCallback.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/ProtectCallback.h>
 
 #include <functional>
 #include <memory>
diff --git a/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Execution.h b/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Execution.h
index 9c66446..867f181 100644
--- a/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Execution.h
+++ b/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Execution.h
@@ -21,8 +21,8 @@
 #include <nnapi/IExecution.h>
 #include <nnapi/Result.h>
 #include <nnapi/Types.h>
+#include <nnapi/hal/1.0/ProtectCallback.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/ProtectCallback.h>
 
 #include "PreparedModel.h"
 
diff --git a/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/ExecutionBurstController.h b/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/ExecutionBurstController.h
index dae1ff3..8078693 100644
--- a/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/ExecutionBurstController.h
+++ b/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/ExecutionBurstController.h
@@ -32,8 +32,8 @@
 #include <nnapi/IPreparedModel.h>
 #include <nnapi/Result.h>
 #include <nnapi/Types.h>
+#include <nnapi/hal/1.0/ProtectCallback.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/ProtectCallback.h>
 
 #include <atomic>
 #include <chrono>
diff --git a/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/ExecutionBurstServer.h b/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/ExecutionBurstServer.h
index f7926f5..500aa0c 100644
--- a/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/ExecutionBurstServer.h
+++ b/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/ExecutionBurstServer.h
@@ -29,7 +29,7 @@
 #include <nnapi/IBurst.h>
 #include <nnapi/Result.h>
 #include <nnapi/Types.h>
-#include <nnapi/hal/ProtectCallback.h>
+#include <nnapi/hal/1.0/ProtectCallback.h>
 
 #include <atomic>
 #include <chrono>
diff --git a/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/ExecutionBurstUtils.h b/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/ExecutionBurstUtils.h
index c662bc3..c081305 100644
--- a/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/ExecutionBurstUtils.h
+++ b/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/ExecutionBurstUtils.h
@@ -23,7 +23,7 @@
 #include <hidl/MQDescriptor.h>
 #include <nnapi/Result.h>
 #include <nnapi/Types.h>
-#include <nnapi/hal/ProtectCallback.h>
+#include <nnapi/hal/1.0/ProtectCallback.h>
 
 #include <atomic>
 #include <chrono>
diff --git a/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/PreparedModel.h b/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/PreparedModel.h
index 35abd79..1150e5e 100644
--- a/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/PreparedModel.h
+++ b/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/PreparedModel.h
@@ -22,8 +22,8 @@
 #include <nnapi/IPreparedModel.h>
 #include <nnapi/Result.h>
 #include <nnapi/Types.h>
+#include <nnapi/hal/1.0/ProtectCallback.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/ProtectCallback.h>
 
 #include <memory>
 #include <tuple>
diff --git a/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Utils.h b/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Utils.h
index 5c3b8a7..23e336a 100644
--- a/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Utils.h
+++ b/neuralnetworks/1.2/utils/include/nnapi/hal/1.2/Utils.h
@@ -28,7 +28,6 @@
 #include <nnapi/hal/1.0/Conversions.h>
 #include <nnapi/hal/1.1/Conversions.h>
 #include <nnapi/hal/1.1/Utils.h>
-#include <nnapi/hal/HandleError.h>
 
 #include <limits>
 
diff --git a/neuralnetworks/1.2/utils/src/Callbacks.cpp b/neuralnetworks/1.2/utils/src/Callbacks.cpp
index 01b5e12..cb61f21 100644
--- a/neuralnetworks/1.2/utils/src/Callbacks.cpp
+++ b/neuralnetworks/1.2/utils/src/Callbacks.cpp
@@ -29,10 +29,10 @@
 #include <nnapi/Types.h>
 #include <nnapi/hal/1.0/Callbacks.h>
 #include <nnapi/hal/1.0/Conversions.h>
+#include <nnapi/hal/1.0/HandleError.h>
 #include <nnapi/hal/1.0/PreparedModel.h>
+#include <nnapi/hal/1.0/ProtectCallback.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/HandleError.h>
-#include <nnapi/hal/ProtectCallback.h>
 #include <nnapi/hal/TransferValue.h>
 
 #include <utility>
@@ -62,7 +62,7 @@
 
 nn::GeneralResult<nn::SharedPreparedModel> prepareModelCallback(
         V1_0::ErrorStatus status, const sp<IPreparedModel>& preparedModel) {
-    HANDLE_HAL_STATUS(status) << "model preparation failed with " << toString(status);
+    HANDLE_STATUS_HIDL(status) << "model preparation failed with " << toString(status);
     return NN_TRY(PreparedModel::create(preparedModel, /*executeSynchronously=*/true));
 }
 
@@ -74,7 +74,7 @@
         return NN_ERROR(nn::ErrorStatus::OUTPUT_INSUFFICIENT_SIZE, std::move(canonicalOutputShapes))
                << "execution failed with " << toString(status);
     }
-    HANDLE_HAL_STATUS(status) << "execution failed with " << toString(status);
+    HANDLE_STATUS_HIDL(status) << "execution failed with " << toString(status);
     return convertExecutionGeneralResultsHelper(outputShapes, timing);
 }
 
diff --git a/neuralnetworks/1.2/utils/src/Conversions.cpp b/neuralnetworks/1.2/utils/src/Conversions.cpp
index 6a80b42..838d9c4 100644
--- a/neuralnetworks/1.2/utils/src/Conversions.cpp
+++ b/neuralnetworks/1.2/utils/src/Conversions.cpp
@@ -28,7 +28,6 @@
 #include <nnapi/hal/1.0/Conversions.h>
 #include <nnapi/hal/1.1/Conversions.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/HandleError.h>
 
 #include <algorithm>
 #include <functional>
@@ -187,7 +186,7 @@
 
     // Verify number of consumers.
     const auto numberOfConsumers =
-            NN_TRY(hal::utils::countNumberOfConsumers(model.operands.size(), operations));
+            NN_TRY(countNumberOfConsumers(model.operands.size(), operations));
     CHECK(model.operands.size() == numberOfConsumers.size());
     for (size_t i = 0; i < model.operands.size(); ++i) {
         if (model.operands[i].numberOfConsumers != numberOfConsumers[i]) {
@@ -264,14 +263,6 @@
     };
 }
 
-GeneralResult<SharedHandle> unvalidatedConvert(const hidl_handle& hidlHandle) {
-    if (hidlHandle.getNativeHandle() == nullptr) {
-        return nullptr;
-    }
-    auto handle = NN_TRY(hal::utils::sharedHandleFromNativeHandle(hidlHandle.getNativeHandle()));
-    return std::make_shared<const Handle>(std::move(handle));
-}
-
 GeneralResult<DeviceType> convert(const hal::V1_2::DeviceType& deviceType) {
     return validatedConvert(deviceType);
 }
@@ -334,6 +325,10 @@
     return V1_0::utils::unvalidatedConvert(operandValues);
 }
 
+nn::GeneralResult<hidl_handle> unvalidatedConvert(const nn::SharedHandle& handle) {
+    return V1_0::utils::unvalidatedConvert(handle);
+}
+
 nn::GeneralResult<hidl_memory> unvalidatedConvert(const nn::SharedMemory& memory) {
     return V1_0::utils::unvalidatedConvert(memory);
 }
@@ -481,7 +476,7 @@
 
     // Update number of consumers.
     const auto numberOfConsumers =
-            NN_TRY(hal::utils::countNumberOfConsumers(operands.size(), model.main.operations));
+            NN_TRY(countNumberOfConsumers(operands.size(), model.main.operations));
     CHECK(operands.size() == numberOfConsumers.size());
     for (size_t i = 0; i < operands.size(); ++i) {
         operands[i].numberOfConsumers = numberOfConsumers[i];
@@ -544,13 +539,6 @@
     };
 }
 
-nn::GeneralResult<hidl_handle> unvalidatedConvert(const nn::SharedHandle& handle) {
-    if (handle == nullptr) {
-        return {};
-    }
-    return hal::utils::hidlHandleFromSharedHandle(*handle);
-}
-
 nn::GeneralResult<DeviceType> convert(const nn::DeviceType& deviceType) {
     return validatedConvert(deviceType);
 }
diff --git a/neuralnetworks/1.2/utils/src/Device.cpp b/neuralnetworks/1.2/utils/src/Device.cpp
index 9fe0de2..f12669a 100644
--- a/neuralnetworks/1.2/utils/src/Device.cpp
+++ b/neuralnetworks/1.2/utils/src/Device.cpp
@@ -30,10 +30,10 @@
 #include <nnapi/OperandTypes.h>
 #include <nnapi/Result.h>
 #include <nnapi/Types.h>
+#include <nnapi/hal/1.0/HandleError.h>
+#include <nnapi/hal/1.0/ProtectCallback.h>
 #include <nnapi/hal/1.1/Conversions.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/HandleError.h>
-#include <nnapi/hal/ProtectCallback.h>
 
 #include <functional>
 #include <memory>
@@ -49,31 +49,31 @@
 
 nn::GeneralResult<nn::Capabilities> capabilitiesCallback(V1_0::ErrorStatus status,
                                                          const Capabilities& capabilities) {
-    HANDLE_HAL_STATUS(status) << "getting capabilities failed with " << toString(status);
+    HANDLE_STATUS_HIDL(status) << "getting capabilities failed with " << toString(status);
     return nn::convert(capabilities);
 }
 
 nn::GeneralResult<std::string> versionStringCallback(V1_0::ErrorStatus status,
                                                      const hidl_string& versionString) {
-    HANDLE_HAL_STATUS(status) << "getVersionString failed with " << toString(status);
+    HANDLE_STATUS_HIDL(status) << "getVersionString failed with " << toString(status);
     return versionString;
 }
 
 nn::GeneralResult<nn::DeviceType> deviceTypeCallback(V1_0::ErrorStatus status,
                                                      DeviceType deviceType) {
-    HANDLE_HAL_STATUS(status) << "getDeviceType failed with " << toString(status);
+    HANDLE_STATUS_HIDL(status) << "getDeviceType failed with " << toString(status);
     return nn::convert(deviceType);
 }
 
 nn::GeneralResult<std::vector<nn::Extension>> supportedExtensionsCallback(
         V1_0::ErrorStatus status, const hidl_vec<Extension>& extensions) {
-    HANDLE_HAL_STATUS(status) << "getExtensions failed with " << toString(status);
+    HANDLE_STATUS_HIDL(status) << "getExtensions failed with " << toString(status);
     return nn::convert(extensions);
 }
 
 nn::GeneralResult<std::pair<uint32_t, uint32_t>> numberOfCacheFilesNeededCallback(
         V1_0::ErrorStatus status, uint32_t numModelCache, uint32_t numDataCache) {
-    HANDLE_HAL_STATUS(status) << "getNumberOfCacheFilesNeeded failed with " << toString(status);
+    HANDLE_STATUS_HIDL(status) << "getNumberOfCacheFilesNeeded failed with " << toString(status);
     if (numModelCache > nn::kMaxNumberOfCacheFiles) {
         return NN_ERROR() << "getNumberOfCacheFilesNeeded returned numModelCache files greater "
                              "than allowed max ("
@@ -254,7 +254,7 @@
     const auto ret = kDevice->prepareModel_1_2(hidlModel, hidlPreference, hidlModelCache,
                                                hidlDataCache, hidlToken, cb);
     const auto status = HANDLE_TRANSPORT_FAILURE(ret);
-    HANDLE_HAL_STATUS(status) << "model preparation failed with " << toString(status);
+    HANDLE_STATUS_HIDL(status) << "model preparation failed with " << toString(status);
 
     return cb->get();
 }
@@ -271,7 +271,7 @@
 
     const auto ret = kDevice->prepareModelFromCache(hidlModelCache, hidlDataCache, hidlToken, cb);
     const auto status = HANDLE_TRANSPORT_FAILURE(ret);
-    HANDLE_HAL_STATUS(status) << "model preparation from cache failed with " << toString(status);
+    HANDLE_STATUS_HIDL(status) << "model preparation from cache failed with " << toString(status);
 
     return cb->get();
 }
diff --git a/neuralnetworks/1.2/utils/src/Execution.cpp b/neuralnetworks/1.2/utils/src/Execution.cpp
index 18d1c90..320b0e1 100644
--- a/neuralnetworks/1.2/utils/src/Execution.cpp
+++ b/neuralnetworks/1.2/utils/src/Execution.cpp
@@ -29,7 +29,6 @@
 #include <nnapi/TypeUtils.h>
 #include <nnapi/Types.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/HandleError.h>
 
 #include <memory>
 #include <utility>
diff --git a/neuralnetworks/1.2/utils/src/ExecutionBurstController.cpp b/neuralnetworks/1.2/utils/src/ExecutionBurstController.cpp
index 2746965..a8ded9e 100644
--- a/neuralnetworks/1.2/utils/src/ExecutionBurstController.cpp
+++ b/neuralnetworks/1.2/utils/src/ExecutionBurstController.cpp
@@ -28,9 +28,9 @@
 #include <nnapi/Types.h>
 #include <nnapi/Validation.h>
 #include <nnapi/hal/1.0/Conversions.h>
+#include <nnapi/hal/1.0/HandleError.h>
+#include <nnapi/hal/1.0/ProtectCallback.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/HandleError.h>
-#include <nnapi/hal/ProtectCallback.h>
 #include <nnapi/hal/TransferValue.h>
 
 #include <algorithm>
@@ -82,8 +82,8 @@
 
 nn::GeneralResult<sp<IBurstContext>> executionBurstResultCallback(
         V1_0::ErrorStatus status, const sp<IBurstContext>& burstContext) {
-    HANDLE_HAL_STATUS(status) << "IPreparedModel::configureExecutionBurst failed with status "
-                              << toString(status);
+    HANDLE_STATUS_HIDL(status) << "IPreparedModel::configureExecutionBurst failed with status "
+                               << toString(status);
     if (burstContext == nullptr) {
         return NN_ERROR(nn::ErrorStatus::GENERAL_FAILURE)
                << "IPreparedModel::configureExecutionBurst returned nullptr for burst";
diff --git a/neuralnetworks/1.2/utils/src/ExecutionBurstServer.cpp b/neuralnetworks/1.2/utils/src/ExecutionBurstServer.cpp
index 65ec7f5..f30b662 100644
--- a/neuralnetworks/1.2/utils/src/ExecutionBurstServer.cpp
+++ b/neuralnetworks/1.2/utils/src/ExecutionBurstServer.cpp
@@ -27,8 +27,8 @@
 #include <nnapi/Types.h>
 #include <nnapi/Validation.h>
 #include <nnapi/hal/1.0/Conversions.h>
-#include <nnapi/hal/HandleError.h>
-#include <nnapi/hal/ProtectCallback.h>
+#include <nnapi/hal/1.0/HandleError.h>
+#include <nnapi/hal/1.0/ProtectCallback.h>
 #include <nnapi/hal/TransferValue.h>
 
 #include <algorithm>
@@ -50,7 +50,7 @@
 
 nn::GeneralResult<std::vector<nn::SharedMemory>> getMemoriesCallback(
         V1_0::ErrorStatus status, const hidl_vec<hidl_memory>& memories) {
-    HANDLE_HAL_STATUS(status) << "getting burst memories failed with " << toString(status);
+    HANDLE_STATUS_HIDL(status) << "getting burst memories failed with " << toString(status);
     std::vector<nn::SharedMemory> canonicalMemories;
     canonicalMemories.reserve(memories.size());
     for (const auto& memory : memories) {
diff --git a/neuralnetworks/1.2/utils/src/ExecutionBurstUtils.cpp b/neuralnetworks/1.2/utils/src/ExecutionBurstUtils.cpp
index 1bdde1e..e0d029a 100644
--- a/neuralnetworks/1.2/utils/src/ExecutionBurstUtils.cpp
+++ b/neuralnetworks/1.2/utils/src/ExecutionBurstUtils.cpp
@@ -27,7 +27,7 @@
 #include <hidl/MQDescriptor.h>
 #include <nnapi/Result.h>
 #include <nnapi/Types.h>
-#include <nnapi/hal/ProtectCallback.h>
+#include <nnapi/hal/1.0/ProtectCallback.h>
 
 #include <atomic>
 #include <chrono>
diff --git a/neuralnetworks/1.2/utils/src/PreparedModel.cpp b/neuralnetworks/1.2/utils/src/PreparedModel.cpp
index c261184..b8a5ae0 100644
--- a/neuralnetworks/1.2/utils/src/PreparedModel.cpp
+++ b/neuralnetworks/1.2/utils/src/PreparedModel.cpp
@@ -31,9 +31,9 @@
 #include <nnapi/Result.h>
 #include <nnapi/Types.h>
 #include <nnapi/hal/1.0/Conversions.h>
+#include <nnapi/hal/1.0/HandleError.h>
+#include <nnapi/hal/1.0/ProtectCallback.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/HandleError.h>
-#include <nnapi/hal/ProtectCallback.h>
 
 #include <chrono>
 #include <memory>
@@ -82,7 +82,7 @@
     const auto ret = kPreparedModel->execute_1_2(request, measure, cb);
     const auto status = HANDLE_TRANSPORT_FAILURE(ret);
     if (status != V1_0::ErrorStatus::OUTPUT_INSUFFICIENT_SIZE) {
-        HANDLE_HAL_STATUS(status) << "execution failed with " << toString(status);
+        HANDLE_STATUS_HIDL(status) << "execution failed with " << toString(status);
     }
 
     return cb->get();
diff --git a/neuralnetworks/1.2/vts/functional/Android.bp b/neuralnetworks/1.2/vts/functional/Android.bp
index 15a5d2f..e313b47 100644
--- a/neuralnetworks/1.2/vts/functional/Android.bp
+++ b/neuralnetworks/1.2/vts/functional/Android.bp
@@ -71,7 +71,7 @@
         "libgmock",
         "libhidlmemory",
         "libneuralnetworks_generated_test_harness",
-        "libneuralnetworks_common_hidl",
+        "libneuralnetworks_utils",
     ],
     whole_static_libs: [
         "neuralnetworks_generated_V1_0_example",
diff --git a/neuralnetworks/1.3/utils/Android.bp b/neuralnetworks/1.3/utils/Android.bp
index 8ae509f..7acb4fc 100644
--- a/neuralnetworks/1.3/utils/Android.bp
+++ b/neuralnetworks/1.3/utils/Android.bp
@@ -69,7 +69,7 @@
         "android.hardware.neuralnetworks@1.2",
         "android.hardware.neuralnetworks@1.3",
         "libgmock",
-        "libneuralnetworks_common_hidl",
+        "libneuralnetworks_common",
         "neuralnetworks_types",
         "neuralnetworks_utils_hal_common",
         "neuralnetworks_utils_hal_1_0",
diff --git a/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Callbacks.h b/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Callbacks.h
index 643172e..4b8ddc1 100644
--- a/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Callbacks.h
+++ b/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Callbacks.h
@@ -30,8 +30,8 @@
 #include <nnapi/Result.h>
 #include <nnapi/Types.h>
 #include <nnapi/hal/1.0/Callbacks.h>
+#include <nnapi/hal/1.0/ProtectCallback.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/ProtectCallback.h>
 #include <nnapi/hal/TransferValue.h>
 
 // See hardware/interfaces/neuralnetworks/utils/README.md for more information on HIDL interface
diff --git a/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Conversions.h b/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Conversions.h
index b677c62..ec1e530 100644
--- a/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Conversions.h
+++ b/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Conversions.h
@@ -113,6 +113,9 @@
 nn::GeneralResult<V1_2::MeasureTiming> convert(const nn::MeasureTiming& measureTiming);
 nn::GeneralResult<V1_2::Timing> convert(const nn::Timing& timing);
 
+nn::GeneralResult<hidl_vec<hidl_handle>> convertSyncFences(
+        const std::vector<nn::SyncFence>& fences);
+
 }  // namespace android::hardware::neuralnetworks::V1_3::utils
 
 #endif  // ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_1_3_CONVERSIONS_H
diff --git a/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Device.h b/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Device.h
index 84f606a..c3c6fc4 100644
--- a/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Device.h
+++ b/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Device.h
@@ -23,8 +23,8 @@
 #include <nnapi/OperandTypes.h>
 #include <nnapi/Result.h>
 #include <nnapi/Types.h>
+#include <nnapi/hal/1.0/ProtectCallback.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/ProtectCallback.h>
 
 #include <functional>
 #include <memory>
diff --git a/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/PreparedModel.h b/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/PreparedModel.h
index 5acba71..480438d 100644
--- a/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/PreparedModel.h
+++ b/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/PreparedModel.h
@@ -21,8 +21,8 @@
 #include <nnapi/IPreparedModel.h>
 #include <nnapi/Result.h>
 #include <nnapi/Types.h>
+#include <nnapi/hal/1.0/ProtectCallback.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/ProtectCallback.h>
 
 #include <memory>
 #include <tuple>
diff --git a/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Utils.h b/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Utils.h
index 28525bd..2812db2 100644
--- a/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Utils.h
+++ b/neuralnetworks/1.3/utils/include/nnapi/hal/1.3/Utils.h
@@ -30,7 +30,6 @@
 #include <nnapi/hal/1.1/Utils.h>
 #include <nnapi/hal/1.2/Conversions.h>
 #include <nnapi/hal/1.2/Utils.h>
-#include <nnapi/hal/HandleError.h>
 
 namespace android::hardware::neuralnetworks::V1_3::utils {
 
diff --git a/neuralnetworks/1.3/utils/src/Buffer.cpp b/neuralnetworks/1.3/utils/src/Buffer.cpp
index ada5265..34925ea 100644
--- a/neuralnetworks/1.3/utils/src/Buffer.cpp
+++ b/neuralnetworks/1.3/utils/src/Buffer.cpp
@@ -25,7 +25,7 @@
 #include <nnapi/Result.h>
 #include <nnapi/Types.h>
 #include <nnapi/hal/1.0/Conversions.h>
-#include <nnapi/hal/HandleError.h>
+#include <nnapi/hal/1.0/HandleError.h>
 
 #include "Conversions.h"
 #include "Utils.h"
@@ -66,7 +66,7 @@
 
     const auto ret = kBuffer->copyTo(hidlDst);
     const auto status = HANDLE_TRANSPORT_FAILURE(ret);
-    HANDLE_HAL_STATUS(status) << "IBuffer::copyTo failed with " << toString(status);
+    HANDLE_STATUS_HIDL(status) << "IBuffer::copyTo failed with " << toString(status);
 
     return {};
 }
@@ -78,7 +78,7 @@
 
     const auto ret = kBuffer->copyFrom(hidlSrc, hidlDimensions);
     const auto status = HANDLE_TRANSPORT_FAILURE(ret);
-    HANDLE_HAL_STATUS(status) << "IBuffer::copyFrom failed with " << toString(status);
+    HANDLE_STATUS_HIDL(status) << "IBuffer::copyFrom failed with " << toString(status);
 
     return {};
 }
diff --git a/neuralnetworks/1.3/utils/src/Callbacks.cpp b/neuralnetworks/1.3/utils/src/Callbacks.cpp
index 156216f..f063862 100644
--- a/neuralnetworks/1.3/utils/src/Callbacks.cpp
+++ b/neuralnetworks/1.3/utils/src/Callbacks.cpp
@@ -30,13 +30,13 @@
 #include <nnapi/Types.h>
 #include <nnapi/hal/1.0/Callbacks.h>
 #include <nnapi/hal/1.0/Conversions.h>
+#include <nnapi/hal/1.0/HandleError.h>
 #include <nnapi/hal/1.0/PreparedModel.h>
+#include <nnapi/hal/1.0/ProtectCallback.h>
 #include <nnapi/hal/1.2/Callbacks.h>
 #include <nnapi/hal/1.2/Conversions.h>
 #include <nnapi/hal/1.2/PreparedModel.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/HandleError.h>
-#include <nnapi/hal/ProtectCallback.h>
 #include <nnapi/hal/TransferValue.h>
 
 #include <utility>
@@ -71,13 +71,13 @@
 
 nn::GeneralResult<std::vector<bool>> supportedOperationsCallback(
         ErrorStatus status, const hidl_vec<bool>& supportedOperations) {
-    HANDLE_HAL_STATUS(status) << "get supported operations failed with " << toString(status);
+    HANDLE_STATUS_HIDL(status) << "get supported operations failed with " << toString(status);
     return supportedOperations;
 }
 
 nn::GeneralResult<nn::SharedPreparedModel> prepareModelCallback(
         ErrorStatus status, const sp<IPreparedModel>& preparedModel) {
-    HANDLE_HAL_STATUS(status) << "model preparation failed with " << toString(status);
+    HANDLE_STATUS_HIDL(status) << "model preparation failed with " << toString(status);
     return NN_TRY(PreparedModel::create(preparedModel, /*executeSynchronously=*/true));
 }
 
@@ -90,7 +90,7 @@
         return NN_ERROR(nn::ErrorStatus::OUTPUT_INSUFFICIENT_SIZE, std::move(canonicalOutputShapes))
                << "execution failed with " << toString(status);
     }
-    HANDLE_HAL_STATUS(status) << "execution failed with " << toString(status);
+    HANDLE_STATUS_HIDL(status) << "execution failed with " << toString(status);
     return convertExecutionGeneralResultsHelper(outputShapes, timing);
 }
 
diff --git a/neuralnetworks/1.3/utils/src/Conversions.cpp b/neuralnetworks/1.3/utils/src/Conversions.cpp
index b35b2cd..a1d414c 100644
--- a/neuralnetworks/1.3/utils/src/Conversions.cpp
+++ b/neuralnetworks/1.3/utils/src/Conversions.cpp
@@ -28,7 +28,6 @@
 #include <nnapi/hal/1.0/Conversions.h>
 #include <nnapi/hal/1.2/Conversions.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/HandleError.h>
 
 #include <algorithm>
 #include <chrono>
@@ -194,7 +193,7 @@
 
     // Verify number of consumers.
     const auto numberOfConsumers =
-            NN_TRY(hal::utils::countNumberOfConsumers(subgraph.operands.size(), operations));
+            NN_TRY(countNumberOfConsumers(subgraph.operands.size(), operations));
     CHECK(subgraph.operands.size() == numberOfConsumers.size());
     for (size_t i = 0; i < subgraph.operands.size(); ++i) {
         if (subgraph.operands[i].numberOfConsumers != numberOfConsumers[i]) {
@@ -380,7 +379,7 @@
 }
 
 nn::GeneralResult<hidl_handle> unvalidatedConvert(const nn::SharedHandle& handle) {
-    return V1_2::utils::unvalidatedConvert(handle);
+    return V1_0::utils::unvalidatedConvert(handle);
 }
 
 nn::GeneralResult<hidl_memory> unvalidatedConvert(const nn::SharedMemory& memory) {
@@ -543,7 +542,7 @@
 
     // Update number of consumers.
     const auto numberOfConsumers =
-            NN_TRY(hal::utils::countNumberOfConsumers(operands.size(), subgraph.operations));
+            NN_TRY(countNumberOfConsumers(operands.size(), subgraph.operations));
     CHECK(operands.size() == numberOfConsumers.size());
     for (size_t i = 0; i < operands.size(); ++i) {
         operands[i].numberOfConsumers = numberOfConsumers[i];
@@ -727,4 +726,13 @@
     return V1_2::utils::convert(timing);
 }
 
+nn::GeneralResult<hidl_vec<hidl_handle>> convertSyncFences(
+        const std::vector<nn::SyncFence>& syncFences) {
+    std::vector<nn::SharedHandle> handles;
+    handles.reserve(syncFences.size());
+    std::transform(syncFences.begin(), syncFences.end(), std::back_inserter(handles),
+                   [](const nn::SyncFence& syncFence) { return syncFence.getSharedHandle(); });
+    return convert(handles);
+}
+
 }  // namespace android::hardware::neuralnetworks::V1_3::utils
diff --git a/neuralnetworks/1.3/utils/src/Device.cpp b/neuralnetworks/1.3/utils/src/Device.cpp
index d710b85..a73ce82 100644
--- a/neuralnetworks/1.3/utils/src/Device.cpp
+++ b/neuralnetworks/1.3/utils/src/Device.cpp
@@ -33,13 +33,13 @@
 #include <nnapi/OperandTypes.h>
 #include <nnapi/Result.h>
 #include <nnapi/Types.h>
+#include <nnapi/hal/1.0/HandleError.h>
+#include <nnapi/hal/1.0/ProtectCallback.h>
 #include <nnapi/hal/1.1/Conversions.h>
 #include <nnapi/hal/1.2/Conversions.h>
 #include <nnapi/hal/1.2/Device.h>
 #include <nnapi/hal/1.2/Utils.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/HandleError.h>
-#include <nnapi/hal/ProtectCallback.h>
 
 #include <any>
 #include <functional>
@@ -72,7 +72,7 @@
 
 nn::GeneralResult<nn::Capabilities> capabilitiesCallback(ErrorStatus status,
                                                          const Capabilities& capabilities) {
-    HANDLE_HAL_STATUS(status) << "getting capabilities failed with " << toString(status);
+    HANDLE_STATUS_HIDL(status) << "getting capabilities failed with " << toString(status);
     return nn::convert(capabilities);
 }
 
@@ -89,7 +89,7 @@
 
 nn::GeneralResult<nn::SharedBuffer> allocationCallback(ErrorStatus status,
                                                        const sp<IBuffer>& buffer, uint32_t token) {
-    HANDLE_HAL_STATUS(status) << "IDevice::allocate failed with " << toString(status);
+    HANDLE_STATUS_HIDL(status) << "IDevice::allocate failed with " << toString(status);
     return Buffer::create(buffer, static_cast<nn::Request::MemoryDomainToken>(token));
 }
 
@@ -208,7 +208,7 @@
             kDevice->prepareModel_1_3(hidlModel, hidlPreference, hidlPriority, hidlDeadline,
                                       hidlModelCache, hidlDataCache, hidlToken, cb);
     const auto status = HANDLE_TRANSPORT_FAILURE(ret);
-    HANDLE_HAL_STATUS(status) << "model preparation failed with " << toString(status);
+    HANDLE_STATUS_HIDL(status) << "model preparation failed with " << toString(status);
 
     return cb->get();
 }
@@ -227,7 +227,7 @@
     const auto ret = kDevice->prepareModelFromCache_1_3(hidlDeadline, hidlModelCache, hidlDataCache,
                                                         hidlToken, cb);
     const auto status = HANDLE_TRANSPORT_FAILURE(ret);
-    HANDLE_HAL_STATUS(status) << "model preparation from cache failed with " << toString(status);
+    HANDLE_STATUS_HIDL(status) << "model preparation from cache failed with " << toString(status);
 
     return cb->get();
 }
diff --git a/neuralnetworks/1.3/utils/src/Execution.cpp b/neuralnetworks/1.3/utils/src/Execution.cpp
index 4dc0ddf..0ec7f56 100644
--- a/neuralnetworks/1.3/utils/src/Execution.cpp
+++ b/neuralnetworks/1.3/utils/src/Execution.cpp
@@ -29,7 +29,6 @@
 #include <nnapi/Result.h>
 #include <nnapi/Types.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/HandleError.h>
 
 #include <memory>
 #include <utility>
@@ -73,7 +72,7 @@
 nn::GeneralResult<std::pair<nn::SyncFence, nn::ExecuteFencedInfoCallback>> Execution::computeFenced(
         const std::vector<nn::SyncFence>& waitFor, const nn::OptionalTimePoint& deadline,
         const nn::OptionalDuration& timeoutDurationAfterFence) const {
-    const auto hidlWaitFor = NN_TRY(hal::utils::convertSyncFences(waitFor));
+    const auto hidlWaitFor = NN_TRY(convertSyncFences(waitFor));
     const auto hidlDeadline = NN_TRY(convert(deadline));
     const auto hidlTimeoutDurationAfterFence = NN_TRY(convert(timeoutDurationAfterFence));
     return kPreparedModel->executeFencedInternal(kRequest, hidlWaitFor, kMeasure, hidlDeadline,
diff --git a/neuralnetworks/1.3/utils/src/PreparedModel.cpp b/neuralnetworks/1.3/utils/src/PreparedModel.cpp
index d5dee9d..2c81cb2 100644
--- a/neuralnetworks/1.3/utils/src/PreparedModel.cpp
+++ b/neuralnetworks/1.3/utils/src/PreparedModel.cpp
@@ -30,12 +30,12 @@
 #include <nnapi/Result.h>
 #include <nnapi/TypeUtils.h>
 #include <nnapi/Types.h>
+#include <nnapi/hal/1.0/HandleError.h>
+#include <nnapi/hal/1.0/ProtectCallback.h>
 #include <nnapi/hal/1.2/Conversions.h>
 #include <nnapi/hal/1.2/ExecutionBurstController.h>
 #include <nnapi/hal/1.2/ExecutionBurstUtils.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/HandleError.h>
-#include <nnapi/hal/ProtectCallback.h>
 
 #include <memory>
 #include <tuple>
@@ -50,14 +50,14 @@
 
 nn::GeneralResult<std::pair<nn::Timing, nn::Timing>> convertFencedExecutionCallbackResults(
         ErrorStatus status, const V1_2::Timing& timingLaunched, const V1_2::Timing& timingFenced) {
-    HANDLE_HAL_STATUS(status) << "fenced execution callback info failed with " << toString(status);
+    HANDLE_STATUS_HIDL(status) << "fenced execution callback info failed with " << toString(status);
     return std::make_pair(NN_TRY(nn::convert(timingLaunched)), NN_TRY(nn::convert(timingFenced)));
 }
 
 nn::GeneralResult<std::pair<nn::SyncFence, nn::ExecuteFencedInfoCallback>> fencedExecutionCallback(
         ErrorStatus status, const hidl_handle& syncFence,
         const sp<IFencedExecutionCallback>& callback) {
-    HANDLE_HAL_STATUS(status) << "fenced execution failed with " << toString(status);
+    HANDLE_STATUS_HIDL(status) << "fenced execution failed with " << toString(status);
 
     auto resultSyncFence = nn::SyncFence::createAsSignaled();
     if (syncFence.getNativeHandle() != nullptr) {
@@ -127,7 +127,7 @@
             kPreparedModel->execute_1_3(request, measure, deadline, loopTimeoutDuration, cb);
     const auto status = HANDLE_TRANSPORT_FAILURE(ret);
     if (status != ErrorStatus::OUTPUT_INSUFFICIENT_SIZE) {
-        HANDLE_HAL_STATUS(status) << "execution failed with " << toString(status);
+        HANDLE_STATUS_HIDL(status) << "execution failed with " << toString(status);
     }
 
     return cb->get();
@@ -186,7 +186,7 @@
             &maybeRequestInShared, &relocation));
 
     const auto hidlRequest = NN_TRY(convert(requestInShared));
-    const auto hidlWaitFor = NN_TRY(hal::utils::convertSyncFences(waitFor));
+    const auto hidlWaitFor = NN_TRY(convertSyncFences(waitFor));
     const auto hidlMeasure = NN_TRY(convert(measure));
     const auto hidlDeadline = NN_TRY(convert(deadline));
     const auto hidlLoopTimeoutDuration = NN_TRY(convert(loopTimeoutDuration));
diff --git a/neuralnetworks/1.3/vts/functional/Android.bp b/neuralnetworks/1.3/vts/functional/Android.bp
index ca59cc2..ab0a018 100644
--- a/neuralnetworks/1.3/vts/functional/Android.bp
+++ b/neuralnetworks/1.3/vts/functional/Android.bp
@@ -66,6 +66,7 @@
         "VtsHalNeuralNetworksV1_0_utils",
         "VtsHalNeuralNetworksV1_2_utils",
         "VtsHalNeuralNetworksV1_3_utils",
+        "android.hardware.neuralnetworks-V2-ndk",
         "android.hardware.neuralnetworks@1.0",
         "android.hardware.neuralnetworks@1.1",
         "android.hardware.neuralnetworks@1.2",
@@ -75,7 +76,7 @@
         "libgmock",
         "libhidlmemory",
         "libneuralnetworks_generated_test_harness",
-        "libneuralnetworks_common_hidl",
+        "libneuralnetworks_utils",
         "libsync",
     ],
     whole_static_libs: [
diff --git a/neuralnetworks/aidl/utils/Android.bp b/neuralnetworks/aidl/utils/Android.bp
index 2c2419b..45b0e79 100644
--- a/neuralnetworks/aidl/utils/Android.bp
+++ b/neuralnetworks/aidl/utils/Android.bp
@@ -23,8 +23,8 @@
     default_applicable_licenses: ["hardware_interfaces_license"],
 }
 
-cc_defaults {
-    name: "neuralnetworks_utils_hal_aidl_defaults",
+cc_library_static {
+    name: "neuralnetworks_utils_hal_aidl",
     defaults: ["neuralnetworks_utils_defaults"],
     srcs: ["src/*"],
     local_include_dirs: ["include/nnapi/hal/aidl/"],
@@ -38,8 +38,8 @@
         "neuralnetworks_utils_hal_common",
     ],
     shared_libs: [
+        "android.hardware.neuralnetworks-V2-ndk",
         "libbinder_ndk",
-        "libhidlbase",
     ],
     target: {
         android: {
@@ -48,49 +48,21 @@
     },
 }
 
-cc_library_static {
-    name: "neuralnetworks_utils_hal_aidl_v1",
-    defaults: ["neuralnetworks_utils_hal_aidl_defaults"],
-    shared_libs: [
-        "android.hardware.neuralnetworks-V1-ndk",
-    ],
-}
-
-cc_library_static {
-    name: "neuralnetworks_utils_hal_aidl_v2",
-    defaults: ["neuralnetworks_utils_hal_aidl_defaults"],
-    shared_libs: [
-        "android.hardware.neuralnetworks-V2-ndk",
-    ],
-}
-
-// A cc_defaults that includes the latest non-experimental AIDL utilities and other AIDL libraries
-// that are commonly used together. Modules that always depend on the latest non-experimental
-// AIDL features can include this cc_defaults to avoid managing dependency versions explicitly.
-cc_defaults {
-    name: "neuralnetworks_use_latest_utils_hal_aidl",
-    static_libs: [
-        "android.hardware.common-V2-ndk",
-        "android.hardware.graphics.common-V3-ndk",
-        "android.hardware.neuralnetworks-V2-ndk",
-        "neuralnetworks_utils_hal_aidl_v2",
-    ],
-}
-
 cc_test {
     name: "neuralnetworks_utils_hal_aidl_test",
-    defaults: [
-        "neuralnetworks_use_latest_utils_hal_aidl",
-        "neuralnetworks_utils_defaults",
-    ],
+    defaults: ["neuralnetworks_utils_defaults"],
     srcs: [
         "test/*.cpp",
     ],
     static_libs: [
+        "android.hardware.common-V2-ndk",
+        "android.hardware.graphics.common-V3-ndk",
+        "android.hardware.neuralnetworks-V2-ndk",
         "libaidlcommonsupport",
         "libgmock",
         "libneuralnetworks_common",
         "neuralnetworks_types",
+        "neuralnetworks_utils_hal_aidl",
         "neuralnetworks_utils_hal_common",
     ],
     shared_libs: [
diff --git a/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Callbacks.h b/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Callbacks.h
index 8651912..168264b 100644
--- a/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Callbacks.h
+++ b/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Callbacks.h
@@ -32,8 +32,7 @@
 namespace aidl::android::hardware::neuralnetworks::utils {
 
 // An AIDL callback class to receive the results of IDevice::prepareModel* asynchronously.
-class PreparedModelCallback final : public BnPreparedModelCallback,
-                                    public hal::utils::IProtectedCallback {
+class PreparedModelCallback final : public BnPreparedModelCallback, public IProtectedCallback {
   public:
     using Data = nn::GeneralResult<nn::SharedPreparedModel>;
 
diff --git a/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Device.h b/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Device.h
index d558f66..1457646 100644
--- a/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Device.h
+++ b/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Device.h
@@ -43,12 +43,11 @@
 
   public:
     static nn::GeneralResult<std::shared_ptr<const Device>> create(
-            std::string name, std::shared_ptr<aidl_hal::IDevice> device, nn::Version featureLevel);
+            std::string name, std::shared_ptr<aidl_hal::IDevice> device);
 
     Device(PrivateConstructorTag tag, std::string name, std::string versionString,
-           nn::Version featureLevel, nn::DeviceType deviceType,
-           std::vector<nn::Extension> extensions, nn::Capabilities capabilities,
-           std::pair<uint32_t, uint32_t> numberOfCacheFilesNeeded,
+           nn::DeviceType deviceType, std::vector<nn::Extension> extensions,
+           nn::Capabilities capabilities, std::pair<uint32_t, uint32_t> numberOfCacheFilesNeeded,
            std::shared_ptr<aidl_hal::IDevice> device, DeathHandler deathHandler);
 
     const std::string& getName() const override;
@@ -85,7 +84,6 @@
   private:
     const std::string kName;
     const std::string kVersionString;
-    const nn::Version kFeatureLevel;
     const nn::DeviceType kDeviceType;
     const std::vector<nn::Extension> kExtensions;
     const nn::Capabilities kCapabilities;
diff --git a/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/ProtectCallback.h b/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/ProtectCallback.h
index ab1108c..92ed1cd 100644
--- a/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/ProtectCallback.h
+++ b/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/ProtectCallback.h
@@ -23,7 +23,6 @@
 #include <nnapi/Result.h>
 #include <nnapi/Types.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/ProtectCallback.h>
 
 #include <functional>
 #include <mutex>
@@ -34,19 +33,39 @@
 
 namespace aidl::android::hardware::neuralnetworks::utils {
 
+class IProtectedCallback {
+  public:
+    /**
+     * Marks this object as a dead object.
+     */
+    virtual void notifyAsDeadObject() = 0;
+
+    // Public virtual destructor to allow objects to be stored (and destroyed) as smart pointers.
+    // E.g., std::unique_ptr<IProtectedCallback>.
+    virtual ~IProtectedCallback() = default;
+
+  protected:
+    // Protect the non-destructor special member functions to prevent object slicing.
+    IProtectedCallback() = default;
+    IProtectedCallback(const IProtectedCallback&) = default;
+    IProtectedCallback(IProtectedCallback&&) noexcept = default;
+    IProtectedCallback& operator=(const IProtectedCallback&) = default;
+    IProtectedCallback& operator=(IProtectedCallback&&) noexcept = default;
+};
+
 // Thread safe class
 class DeathMonitor final {
   public:
     static void serviceDied(void* cookie);
     void serviceDied();
     // Precondition: `killable` must be non-null.
-    void add(hal::utils::IProtectedCallback* killable) const;
+    void add(IProtectedCallback* killable) const;
     // Precondition: `killable` must be non-null.
-    void remove(hal::utils::IProtectedCallback* killable) const;
+    void remove(IProtectedCallback* killable) const;
 
   private:
     mutable std::mutex mMutex;
-    mutable std::vector<hal::utils::IProtectedCallback*> mObjects GUARDED_BY(mMutex);
+    mutable std::vector<IProtectedCallback*> mObjects GUARDED_BY(mMutex);
 };
 
 class DeathHandler final {
@@ -62,7 +81,7 @@
     using Cleanup = std::function<void()>;
     // Precondition: `killable` must be non-null.
     [[nodiscard]] ::android::base::ScopeGuard<Cleanup> protectCallback(
-            hal::utils::IProtectedCallback* killable) const;
+            IProtectedCallback* killable) const;
 
     std::shared_ptr<DeathMonitor> getDeathMonitor() const { return kDeathMonitor; }
 
diff --git a/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Utils.h b/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Utils.h
index 1b149e4..f2ab479 100644
--- a/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Utils.h
+++ b/neuralnetworks/aidl/utils/include/nnapi/hal/aidl/Utils.h
@@ -24,12 +24,11 @@
 #include <nnapi/TypeUtils.h>
 #include <nnapi/Types.h>
 #include <nnapi/Validation.h>
-#include <nnapi/hal/HandleError.h>
 
 namespace aidl::android::hardware::neuralnetworks::utils {
 
 constexpr auto kDefaultPriority = Priority::MEDIUM;
-constexpr auto kVersion = nn::Version::ANDROID_S;
+constexpr auto kVersion = nn::Version::FEATURE_LEVEL_6;
 
 template <typename Type>
 nn::Result<void> validate(const Type& halObject) {
@@ -75,6 +74,13 @@
     for (const auto status = handleTransportError(ret); !status.ok();) \
     return NN_ERROR(status.error().code) << status.error().message << ": "
 
+#define HANDLE_STATUS_AIDL(status)                                                            \
+    if (const ::android::nn::ErrorStatus canonical = ::android::nn::convert(status).value_or( \
+                ::android::nn::ErrorStatus::GENERAL_FAILURE);                                 \
+        canonical == ::android::nn::ErrorStatus::NONE) {                                      \
+    } else                                                                                    \
+        return NN_ERROR(canonical)
+
 }  // namespace aidl::android::hardware::neuralnetworks::utils
 
 #endif  // ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_AIDL_UTILS_H
diff --git a/neuralnetworks/aidl/utils/src/Burst.cpp b/neuralnetworks/aidl/utils/src/Burst.cpp
index c59c10b..fb00b26 100644
--- a/neuralnetworks/aidl/utils/src/Burst.cpp
+++ b/neuralnetworks/aidl/utils/src/Burst.cpp
@@ -26,7 +26,6 @@
 #include <nnapi/Result.h>
 #include <nnapi/TypeUtils.h>
 #include <nnapi/Types.h>
-#include <nnapi/hal/HandleError.h>
 
 #include <memory>
 #include <mutex>
diff --git a/neuralnetworks/aidl/utils/src/Callbacks.cpp b/neuralnetworks/aidl/utils/src/Callbacks.cpp
index 8055665..a321477 100644
--- a/neuralnetworks/aidl/utils/src/Callbacks.cpp
+++ b/neuralnetworks/aidl/utils/src/Callbacks.cpp
@@ -38,7 +38,7 @@
 // nn::Version::ANDROID_S. On failure, this function returns with the appropriate nn::GeneralError.
 nn::GeneralResult<nn::SharedPreparedModel> prepareModelCallback(
         ErrorStatus status, const std::shared_ptr<IPreparedModel>& preparedModel) {
-    HANDLE_HAL_STATUS(status) << "model preparation failed with " << toString(status);
+    HANDLE_STATUS_AIDL(status) << "model preparation failed with " << toString(status);
     return NN_TRY(PreparedModel::create(preparedModel));
 }
 
diff --git a/neuralnetworks/aidl/utils/src/Conversions.cpp b/neuralnetworks/aidl/utils/src/Conversions.cpp
index ddff3f2..45628c8 100644
--- a/neuralnetworks/aidl/utils/src/Conversions.cpp
+++ b/neuralnetworks/aidl/utils/src/Conversions.cpp
@@ -34,7 +34,6 @@
 #include <nnapi/Types.h>
 #include <nnapi/Validation.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/HandleError.h>
 
 #include <algorithm>
 #include <chrono>
diff --git a/neuralnetworks/aidl/utils/src/Device.cpp b/neuralnetworks/aidl/utils/src/Device.cpp
index 5b7ec4e..e80de0b 100644
--- a/neuralnetworks/aidl/utils/src/Device.cpp
+++ b/neuralnetworks/aidl/utils/src/Device.cpp
@@ -125,7 +125,7 @@
 }  // namespace
 
 nn::GeneralResult<std::shared_ptr<const Device>> Device::create(
-        std::string name, std::shared_ptr<aidl_hal::IDevice> device, nn::Version featureLevel) {
+        std::string name, std::shared_ptr<aidl_hal::IDevice> device) {
     if (name.empty()) {
         return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT)
                << "aidl_hal::utils::Device::create must have non-empty name";
@@ -143,19 +143,18 @@
 
     auto deathHandler = NN_TRY(DeathHandler::create(device));
     return std::make_shared<const Device>(
-            PrivateConstructorTag{}, std::move(name), std::move(versionString), featureLevel,
-            deviceType, std::move(extensions), std::move(capabilities), numberOfCacheFilesNeeded,
+            PrivateConstructorTag{}, std::move(name), std::move(versionString), deviceType,
+            std::move(extensions), std::move(capabilities), numberOfCacheFilesNeeded,
             std::move(device), std::move(deathHandler));
 }
 
 Device::Device(PrivateConstructorTag /*tag*/, std::string name, std::string versionString,
-               nn::Version featureLevel, nn::DeviceType deviceType,
-               std::vector<nn::Extension> extensions, nn::Capabilities capabilities,
+               nn::DeviceType deviceType, std::vector<nn::Extension> extensions,
+               nn::Capabilities capabilities,
                std::pair<uint32_t, uint32_t> numberOfCacheFilesNeeded,
                std::shared_ptr<aidl_hal::IDevice> device, DeathHandler deathHandler)
     : kName(std::move(name)),
       kVersionString(std::move(versionString)),
-      kFeatureLevel(featureLevel),
       kDeviceType(deviceType),
       kExtensions(std::move(extensions)),
       kCapabilities(std::move(capabilities)),
@@ -172,7 +171,7 @@
 }
 
 nn::Version Device::getFeatureLevel() const {
-    return kFeatureLevel;
+    return nn::Version::ANDROID_S;
 }
 
 nn::DeviceType Device::getType() const {
diff --git a/neuralnetworks/aidl/utils/src/Execution.cpp b/neuralnetworks/aidl/utils/src/Execution.cpp
index 13d4f32..94edd90 100644
--- a/neuralnetworks/aidl/utils/src/Execution.cpp
+++ b/neuralnetworks/aidl/utils/src/Execution.cpp
@@ -25,7 +25,6 @@
 #include <nnapi/Result.h>
 #include <nnapi/Types.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/HandleError.h>
 
 #include <memory>
 #include <utility>
diff --git a/neuralnetworks/aidl/utils/src/PreparedModel.cpp b/neuralnetworks/aidl/utils/src/PreparedModel.cpp
index 0769016..f25c2c8 100644
--- a/neuralnetworks/aidl/utils/src/PreparedModel.cpp
+++ b/neuralnetworks/aidl/utils/src/PreparedModel.cpp
@@ -30,7 +30,6 @@
 #include <nnapi/TypeUtils.h>
 #include <nnapi/Types.h>
 #include <nnapi/hal/CommonUtils.h>
-#include <nnapi/hal/HandleError.h>
 
 #include <memory>
 #include <tuple>
@@ -51,7 +50,7 @@
 nn::GeneralResult<std::pair<nn::Timing, nn::Timing>> convertFencedExecutionResults(
         ErrorStatus status, const aidl_hal::Timing& timingLaunched,
         const aidl_hal::Timing& timingFenced) {
-    HANDLE_HAL_STATUS(status) << "fenced execution callback info failed with " << toString(status);
+    HANDLE_STATUS_AIDL(status) << "fenced execution callback info failed with " << toString(status);
     return std::make_pair(NN_TRY(nn::convert(timingLaunched)), NN_TRY(nn::convert(timingFenced)));
 }
 
diff --git a/neuralnetworks/aidl/utils/src/ProtectCallback.cpp b/neuralnetworks/aidl/utils/src/ProtectCallback.cpp
index 124641c..54a673c 100644
--- a/neuralnetworks/aidl/utils/src/ProtectCallback.cpp
+++ b/neuralnetworks/aidl/utils/src/ProtectCallback.cpp
@@ -22,7 +22,6 @@
 #include <android/binder_auto_utils.h>
 #include <android/binder_interface_utils.h>
 #include <nnapi/Result.h>
-#include <nnapi/hal/ProtectCallback.h>
 
 #include <algorithm>
 #include <functional>
@@ -37,7 +36,7 @@
 void DeathMonitor::serviceDied() {
     std::lock_guard guard(mMutex);
     std::for_each(mObjects.begin(), mObjects.end(),
-                  [](hal::utils::IProtectedCallback* killable) { killable->notifyAsDeadObject(); });
+                  [](IProtectedCallback* killable) { killable->notifyAsDeadObject(); });
 }
 
 void DeathMonitor::serviceDied(void* cookie) {
@@ -45,13 +44,13 @@
     deathMonitor->serviceDied();
 }
 
-void DeathMonitor::add(hal::utils::IProtectedCallback* killable) const {
+void DeathMonitor::add(IProtectedCallback* killable) const {
     CHECK(killable != nullptr);
     std::lock_guard guard(mMutex);
     mObjects.push_back(killable);
 }
 
-void DeathMonitor::remove(hal::utils::IProtectedCallback* killable) const {
+void DeathMonitor::remove(IProtectedCallback* killable) const {
     CHECK(killable != nullptr);
     std::lock_guard guard(mMutex);
     const auto removedIter = std::remove(mObjects.begin(), mObjects.end(), killable);
@@ -102,7 +101,7 @@
 }
 
 [[nodiscard]] ::android::base::ScopeGuard<DeathHandler::Cleanup> DeathHandler::protectCallback(
-        hal::utils::IProtectedCallback* killable) const {
+        IProtectedCallback* killable) const {
     CHECK(killable != nullptr);
     kDeathMonitor->add(killable);
     return ::android::base::make_scope_guard(
diff --git a/neuralnetworks/aidl/utils/src/Service.cpp b/neuralnetworks/aidl/utils/src/Service.cpp
index 01772ee..ac182a2 100644
--- a/neuralnetworks/aidl/utils/src/Service.cpp
+++ b/neuralnetworks/aidl/utils/src/Service.cpp
@@ -17,7 +17,6 @@
 #include "Service.h"
 
 #include <AndroidVersionUtil.h>
-#include <aidl/android/hardware/neuralnetworks/IDevice.h>
 #include <android/binder_auto_utils.h>
 #include <android/binder_manager.h>
 #include <android/binder_process.h>
@@ -29,33 +28,8 @@
 #include <string>
 
 #include "Device.h"
-#include "Utils.h"
 
 namespace aidl::android::hardware::neuralnetworks::utils {
-namespace {
-
-// Map the AIDL version of an IDevice to NNAPI canonical feature level.
-nn::GeneralResult<nn::Version> getAidlServiceFeatureLevel(IDevice* service) {
-    CHECK(service != nullptr);
-    int aidlVersion;
-    const auto ret = service->getInterfaceVersion(&aidlVersion);
-    HANDLE_ASTATUS(ret) << "getInterfaceVersion failed";
-
-    // For service AIDL versions greater than or equal to the AIDL library version that the runtime
-    // was built against, clamp it to the runtime AIDL library version.
-    aidlVersion = std::min(aidlVersion, IDevice::version);
-
-    // Map stable AIDL versions to canonical versions.
-    switch (aidlVersion) {
-        case 1:
-            return nn::Version::ANDROID_S;
-        case 2:
-            return nn::Version::FEATURE_LEVEL_6;
-    }
-    return NN_ERROR() << "Unknown AIDL service version: " << aidlVersion;
-}
-
-}  // namespace
 
 nn::GeneralResult<nn::SharedDevice> getDevice(const std::string& instanceName) {
     auto fullName = std::string(IDevice::descriptor) + "/" + instanceName;
@@ -81,8 +55,7 @@
                    << " returned nullptr";
         }
         ABinderProcess_startThreadPool();
-        const auto featureLevel = NN_TRY(getAidlServiceFeatureLevel(service.get()));
-        return Device::create(instanceName, std::move(service), featureLevel);
+        return Device::create(instanceName, std::move(service));
     };
 
     return hal::utils::ResilientDevice::create(std::move(makeDevice));
diff --git a/neuralnetworks/aidl/utils/test/DeviceTest.cpp b/neuralnetworks/aidl/utils/test/DeviceTest.cpp
index 79abe1b..f121aca 100644
--- a/neuralnetworks/aidl/utils/test/DeviceTest.cpp
+++ b/neuralnetworks/aidl/utils/test/DeviceTest.cpp
@@ -146,45 +146,28 @@
     return ndk::ScopedAStatus::fromStatus(STATUS_DEAD_OBJECT);
 };
 
-class DeviceTest : public ::testing::TestWithParam<nn::Version> {
-  protected:
-    const nn::Version kVersion = GetParam();
-};
-
-std::string printDeviceTest(const testing::TestParamInfo<nn::Version>& info) {
-    switch (info.param) {
-        case nn::Version::ANDROID_S:
-            return "v1";
-        case nn::Version::FEATURE_LEVEL_6:
-            return "v2";
-        default:
-            LOG(FATAL) << "Invalid AIDL version: " << info.param;
-            return "invalid";
-    }
-}
-
 }  // namespace
 
-TEST_P(DeviceTest, invalidName) {
+TEST(DeviceTest, invalidName) {
     // run test
     const auto device = MockDevice::create();
-    const auto result = Device::create(kInvalidName, device, kVersion);
+    const auto result = Device::create(kInvalidName, device);
 
     // verify result
     ASSERT_FALSE(result.has_value());
     EXPECT_EQ(result.error().code, nn::ErrorStatus::INVALID_ARGUMENT);
 }
 
-TEST_P(DeviceTest, invalidDevice) {
+TEST(DeviceTest, invalidDevice) {
     // run test
-    const auto result = Device::create(kName, kInvalidDevice, kVersion);
+    const auto result = Device::create(kName, kInvalidDevice);
 
     // verify result
     ASSERT_FALSE(result.has_value());
     EXPECT_EQ(result.error().code, nn::ErrorStatus::INVALID_ARGUMENT);
 }
 
-TEST_P(DeviceTest, getVersionStringError) {
+TEST(DeviceTest, getVersionStringError) {
     // setup call
     const auto mockDevice = createMockDevice();
     EXPECT_CALL(*mockDevice, getVersionString(_))
@@ -192,14 +175,14 @@
             .WillOnce(InvokeWithoutArgs(makeGeneralFailure));
 
     // run test
-    const auto result = Device::create(kName, mockDevice, kVersion);
+    const auto result = Device::create(kName, mockDevice);
 
     // verify result
     ASSERT_FALSE(result.has_value());
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST_P(DeviceTest, getVersionStringTransportFailure) {
+TEST(DeviceTest, getVersionStringTransportFailure) {
     // setup call
     const auto mockDevice = createMockDevice();
     EXPECT_CALL(*mockDevice, getVersionString(_))
@@ -207,14 +190,14 @@
             .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
 
     // run test
-    const auto result = Device::create(kName, mockDevice, kVersion);
+    const auto result = Device::create(kName, mockDevice);
 
     // verify result
     ASSERT_FALSE(result.has_value());
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST_P(DeviceTest, getVersionStringDeadObject) {
+TEST(DeviceTest, getVersionStringDeadObject) {
     // setup call
     const auto mockDevice = createMockDevice();
     EXPECT_CALL(*mockDevice, getVersionString(_))
@@ -222,27 +205,27 @@
             .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
 
     // run test
-    const auto result = Device::create(kName, mockDevice, kVersion);
+    const auto result = Device::create(kName, mockDevice);
 
     // verify result
     ASSERT_FALSE(result.has_value());
     EXPECT_EQ(result.error().code, nn::ErrorStatus::DEAD_OBJECT);
 }
 
-TEST_P(DeviceTest, getTypeError) {
+TEST(DeviceTest, getTypeError) {
     // setup call
     const auto mockDevice = createMockDevice();
     EXPECT_CALL(*mockDevice, getType(_)).Times(1).WillOnce(InvokeWithoutArgs(makeGeneralFailure));
 
     // run test
-    const auto result = Device::create(kName, mockDevice, kVersion);
+    const auto result = Device::create(kName, mockDevice);
 
     // verify result
     ASSERT_FALSE(result.has_value());
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST_P(DeviceTest, getTypeTransportFailure) {
+TEST(DeviceTest, getTypeTransportFailure) {
     // setup call
     const auto mockDevice = createMockDevice();
     EXPECT_CALL(*mockDevice, getType(_))
@@ -250,14 +233,14 @@
             .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
 
     // run test
-    const auto result = Device::create(kName, mockDevice, kVersion);
+    const auto result = Device::create(kName, mockDevice);
 
     // verify result
     ASSERT_FALSE(result.has_value());
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST_P(DeviceTest, getTypeDeadObject) {
+TEST(DeviceTest, getTypeDeadObject) {
     // setup call
     const auto mockDevice = createMockDevice();
     EXPECT_CALL(*mockDevice, getType(_))
@@ -265,14 +248,14 @@
             .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
 
     // run test
-    const auto result = Device::create(kName, mockDevice, kVersion);
+    const auto result = Device::create(kName, mockDevice);
 
     // verify result
     ASSERT_FALSE(result.has_value());
     EXPECT_EQ(result.error().code, nn::ErrorStatus::DEAD_OBJECT);
 }
 
-TEST_P(DeviceTest, getSupportedExtensionsError) {
+TEST(DeviceTest, getSupportedExtensionsError) {
     // setup call
     const auto mockDevice = createMockDevice();
     EXPECT_CALL(*mockDevice, getSupportedExtensions(_))
@@ -280,14 +263,14 @@
             .WillOnce(InvokeWithoutArgs(makeGeneralFailure));
 
     // run test
-    const auto result = Device::create(kName, mockDevice, kVersion);
+    const auto result = Device::create(kName, mockDevice);
 
     // verify result
     ASSERT_FALSE(result.has_value());
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST_P(DeviceTest, getSupportedExtensionsTransportFailure) {
+TEST(DeviceTest, getSupportedExtensionsTransportFailure) {
     // setup call
     const auto mockDevice = createMockDevice();
     EXPECT_CALL(*mockDevice, getSupportedExtensions(_))
@@ -295,14 +278,14 @@
             .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
 
     // run test
-    const auto result = Device::create(kName, mockDevice, kVersion);
+    const auto result = Device::create(kName, mockDevice);
 
     // verify result
     ASSERT_FALSE(result.has_value());
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST_P(DeviceTest, getSupportedExtensionsDeadObject) {
+TEST(DeviceTest, getSupportedExtensionsDeadObject) {
     // setup call
     const auto mockDevice = createMockDevice();
     EXPECT_CALL(*mockDevice, getSupportedExtensions(_))
@@ -310,20 +293,20 @@
             .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
 
     // run test
-    const auto result = Device::create(kName, mockDevice, kVersion);
+    const auto result = Device::create(kName, mockDevice);
 
     // verify result
     ASSERT_FALSE(result.has_value());
     EXPECT_EQ(result.error().code, nn::ErrorStatus::DEAD_OBJECT);
 }
 
-TEST_P(DeviceTest, getNumberOfCacheFilesNeeded) {
+TEST(DeviceTest, getNumberOfCacheFilesNeeded) {
     // setup call
     const auto mockDevice = createMockDevice();
     EXPECT_CALL(*mockDevice, getNumberOfCacheFilesNeeded(_)).Times(1);
 
     // run test
-    const auto result = Device::create(kName, mockDevice, kVersion);
+    const auto result = Device::create(kName, mockDevice);
 
     // verify result
     ASSERT_TRUE(result.has_value());
@@ -332,7 +315,7 @@
     EXPECT_EQ(result.value()->getNumberOfCacheFilesNeeded(), kNumberOfCacheFilesPair);
 }
 
-TEST_P(DeviceTest, getNumberOfCacheFilesNeededError) {
+TEST(DeviceTest, getNumberOfCacheFilesNeededError) {
     // setup call
     const auto mockDevice = createMockDevice();
     EXPECT_CALL(*mockDevice, getNumberOfCacheFilesNeeded(_))
@@ -340,14 +323,14 @@
             .WillOnce(InvokeWithoutArgs(makeGeneralFailure));
 
     // run test
-    const auto result = Device::create(kName, mockDevice, kVersion);
+    const auto result = Device::create(kName, mockDevice);
 
     // verify result
     ASSERT_FALSE(result.has_value());
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST_P(DeviceTest, dataCacheFilesExceedsSpecifiedMax) {
+TEST(DeviceTest, dataCacheFilesExceedsSpecifiedMax) {
     // setup test
     const auto mockDevice = createMockDevice();
     EXPECT_CALL(*mockDevice, getNumberOfCacheFilesNeeded(_))
@@ -358,14 +341,14 @@
                             InvokeWithoutArgs(makeStatusOk)));
 
     // run test
-    const auto result = Device::create(kName, mockDevice, kVersion);
+    const auto result = Device::create(kName, mockDevice);
 
     // verify result
     ASSERT_FALSE(result.has_value());
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST_P(DeviceTest, modelCacheFilesExceedsSpecifiedMax) {
+TEST(DeviceTest, modelCacheFilesExceedsSpecifiedMax) {
     // setup test
     const auto mockDevice = createMockDevice();
     EXPECT_CALL(*mockDevice, getNumberOfCacheFilesNeeded(_))
@@ -376,14 +359,14 @@
                             InvokeWithoutArgs(makeStatusOk)));
 
     // run test
-    const auto result = Device::create(kName, mockDevice, kVersion);
+    const auto result = Device::create(kName, mockDevice);
 
     // verify result
     ASSERT_FALSE(result.has_value());
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST_P(DeviceTest, getNumberOfCacheFilesNeededTransportFailure) {
+TEST(DeviceTest, getNumberOfCacheFilesNeededTransportFailure) {
     // setup call
     const auto mockDevice = createMockDevice();
     EXPECT_CALL(*mockDevice, getNumberOfCacheFilesNeeded(_))
@@ -391,14 +374,14 @@
             .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
 
     // run test
-    const auto result = Device::create(kName, mockDevice, kVersion);
+    const auto result = Device::create(kName, mockDevice);
 
     // verify result
     ASSERT_FALSE(result.has_value());
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST_P(DeviceTest, getNumberOfCacheFilesNeededDeadObject) {
+TEST(DeviceTest, getNumberOfCacheFilesNeededDeadObject) {
     // setup call
     const auto mockDevice = createMockDevice();
     EXPECT_CALL(*mockDevice, getNumberOfCacheFilesNeeded(_))
@@ -406,14 +389,14 @@
             .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
 
     // run test
-    const auto result = Device::create(kName, mockDevice, kVersion);
+    const auto result = Device::create(kName, mockDevice);
 
     // verify result
     ASSERT_FALSE(result.has_value());
     EXPECT_EQ(result.error().code, nn::ErrorStatus::DEAD_OBJECT);
 }
 
-TEST_P(DeviceTest, getCapabilitiesError) {
+TEST(DeviceTest, getCapabilitiesError) {
     // setup call
     const auto mockDevice = createMockDevice();
     EXPECT_CALL(*mockDevice, getCapabilities(_))
@@ -421,14 +404,14 @@
             .WillOnce(InvokeWithoutArgs(makeGeneralFailure));
 
     // run test
-    const auto result = Device::create(kName, mockDevice, kVersion);
+    const auto result = Device::create(kName, mockDevice);
 
     // verify result
     ASSERT_FALSE(result.has_value());
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST_P(DeviceTest, getCapabilitiesTransportFailure) {
+TEST(DeviceTest, getCapabilitiesTransportFailure) {
     // setup call
     const auto mockDevice = createMockDevice();
     EXPECT_CALL(*mockDevice, getCapabilities(_))
@@ -436,14 +419,14 @@
             .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
 
     // run test
-    const auto result = Device::create(kName, mockDevice, kVersion);
+    const auto result = Device::create(kName, mockDevice);
 
     // verify result
     ASSERT_FALSE(result.has_value());
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST_P(DeviceTest, getCapabilitiesDeadObject) {
+TEST(DeviceTest, getCapabilitiesDeadObject) {
     // setup call
     const auto mockDevice = createMockDevice();
     EXPECT_CALL(*mockDevice, getCapabilities(_))
@@ -451,17 +434,17 @@
             .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
 
     // run test
-    const auto result = Device::create(kName, mockDevice, kVersion);
+    const auto result = Device::create(kName, mockDevice);
 
     // verify result
     ASSERT_FALSE(result.has_value());
     EXPECT_EQ(result.error().code, nn::ErrorStatus::DEAD_OBJECT);
 }
 
-TEST_P(DeviceTest, getName) {
+TEST(DeviceTest, getName) {
     // setup call
     const auto mockDevice = createMockDevice();
-    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    const auto device = Device::create(kName, mockDevice).value();
 
     // run test
     const auto& name = device->getName();
@@ -470,19 +453,19 @@
     EXPECT_EQ(name, kName);
 }
 
-TEST_P(DeviceTest, getFeatureLevel) {
+TEST(DeviceTest, getFeatureLevel) {
     // setup call
     const auto mockDevice = createMockDevice();
-    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    const auto device = Device::create(kName, mockDevice).value();
 
     // run test
     const auto featureLevel = device->getFeatureLevel();
 
     // verify result
-    EXPECT_EQ(featureLevel, kVersion);
+    EXPECT_EQ(featureLevel, nn::Version::ANDROID_S);
 }
 
-TEST_P(DeviceTest, getCachedData) {
+TEST(DeviceTest, getCachedData) {
     // setup call
     const auto mockDevice = createMockDevice();
     EXPECT_CALL(*mockDevice, getVersionString(_)).Times(1);
@@ -491,7 +474,7 @@
     EXPECT_CALL(*mockDevice, getNumberOfCacheFilesNeeded(_)).Times(1);
     EXPECT_CALL(*mockDevice, getCapabilities(_)).Times(1);
 
-    const auto result = Device::create(kName, mockDevice, kVersion);
+    const auto result = Device::create(kName, mockDevice);
     ASSERT_TRUE(result.has_value())
             << "Failed with " << result.error().code << ": " << result.error().message;
     const auto& device = result.value();
@@ -504,10 +487,10 @@
     EXPECT_EQ(device->getCapabilities(), device->getCapabilities());
 }
 
-TEST_P(DeviceTest, getSupportedOperations) {
+TEST(DeviceTest, getSupportedOperations) {
     // setup call
     const auto mockDevice = createMockDevice();
-    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    const auto device = Device::create(kName, mockDevice).value();
     EXPECT_CALL(*mockDevice, getSupportedOperations(_, _))
             .Times(1)
             .WillOnce(DoAll(
@@ -525,10 +508,10 @@
     EXPECT_THAT(supportedOperations, Each(testing::IsTrue()));
 }
 
-TEST_P(DeviceTest, getSupportedOperationsError) {
+TEST(DeviceTest, getSupportedOperationsError) {
     // setup call
     const auto mockDevice = createMockDevice();
-    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    const auto device = Device::create(kName, mockDevice).value();
     EXPECT_CALL(*mockDevice, getSupportedOperations(_, _))
             .Times(1)
             .WillOnce(InvokeWithoutArgs(makeGeneralFailure));
@@ -541,10 +524,10 @@
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST_P(DeviceTest, getSupportedOperationsTransportFailure) {
+TEST(DeviceTest, getSupportedOperationsTransportFailure) {
     // setup call
     const auto mockDevice = createMockDevice();
-    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    const auto device = Device::create(kName, mockDevice).value();
     EXPECT_CALL(*mockDevice, getSupportedOperations(_, _))
             .Times(1)
             .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
@@ -557,10 +540,10 @@
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST_P(DeviceTest, getSupportedOperationsDeadObject) {
+TEST(DeviceTest, getSupportedOperationsDeadObject) {
     // setup call
     const auto mockDevice = createMockDevice();
-    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    const auto device = Device::create(kName, mockDevice).value();
     EXPECT_CALL(*mockDevice, getSupportedOperations(_, _))
             .Times(1)
             .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
@@ -573,10 +556,10 @@
     EXPECT_EQ(result.error().code, nn::ErrorStatus::DEAD_OBJECT);
 }
 
-TEST_P(DeviceTest, prepareModel) {
+TEST(DeviceTest, prepareModel) {
     // setup call
     const auto mockDevice = createMockDevice();
-    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    const auto device = Device::create(kName, mockDevice).value();
     const auto mockPreparedModel = MockPreparedModel::create();
     EXPECT_CALL(*mockDevice, prepareModel(_, _, _, _, _, _, _, _))
             .Times(1)
@@ -593,10 +576,10 @@
     EXPECT_NE(result.value(), nullptr);
 }
 
-TEST_P(DeviceTest, prepareModelLaunchError) {
+TEST(DeviceTest, prepareModelLaunchError) {
     // setup call
     const auto mockDevice = createMockDevice();
-    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    const auto device = Device::create(kName, mockDevice).value();
     EXPECT_CALL(*mockDevice, prepareModel(_, _, _, _, _, _, _, _))
             .Times(1)
             .WillOnce(Invoke(makePreparedModelReturn(ErrorStatus::GENERAL_FAILURE,
@@ -611,10 +594,10 @@
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST_P(DeviceTest, prepareModelReturnError) {
+TEST(DeviceTest, prepareModelReturnError) {
     // setup call
     const auto mockDevice = createMockDevice();
-    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    const auto device = Device::create(kName, mockDevice).value();
     EXPECT_CALL(*mockDevice, prepareModel(_, _, _, _, _, _, _, _))
             .Times(1)
             .WillOnce(Invoke(makePreparedModelReturn(ErrorStatus::NONE,
@@ -629,10 +612,10 @@
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST_P(DeviceTest, prepareModelNullptrError) {
+TEST(DeviceTest, prepareModelNullptrError) {
     // setup call
     const auto mockDevice = createMockDevice();
-    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    const auto device = Device::create(kName, mockDevice).value();
     EXPECT_CALL(*mockDevice, prepareModel(_, _, _, _, _, _, _, _))
             .Times(1)
             .WillOnce(
@@ -647,10 +630,10 @@
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST_P(DeviceTest, prepareModelTransportFailure) {
+TEST(DeviceTest, prepareModelTransportFailure) {
     // setup call
     const auto mockDevice = createMockDevice();
-    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    const auto device = Device::create(kName, mockDevice).value();
     EXPECT_CALL(*mockDevice, prepareModel(_, _, _, _, _, _, _, _))
             .Times(1)
             .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
@@ -664,10 +647,10 @@
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST_P(DeviceTest, prepareModelDeadObject) {
+TEST(DeviceTest, prepareModelDeadObject) {
     // setup call
     const auto mockDevice = createMockDevice();
-    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    const auto device = Device::create(kName, mockDevice).value();
     EXPECT_CALL(*mockDevice, prepareModel(_, _, _, _, _, _, _, _))
             .Times(1)
             .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
@@ -681,10 +664,10 @@
     EXPECT_EQ(result.error().code, nn::ErrorStatus::DEAD_OBJECT);
 }
 
-TEST_P(DeviceTest, prepareModelAsyncCrash) {
+TEST(DeviceTest, prepareModelAsyncCrash) {
     // setup test
     const auto mockDevice = createMockDevice();
-    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    const auto device = Device::create(kName, mockDevice).value();
     const auto ret = [&device]() {
         DeathMonitor::serviceDied(device->getDeathMonitor());
         return ndk::ScopedAStatus::ok();
@@ -702,10 +685,10 @@
     EXPECT_EQ(result.error().code, nn::ErrorStatus::DEAD_OBJECT);
 }
 
-TEST_P(DeviceTest, prepareModelFromCache) {
+TEST(DeviceTest, prepareModelFromCache) {
     // setup call
     const auto mockDevice = createMockDevice();
-    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    const auto device = Device::create(kName, mockDevice).value();
     const auto mockPreparedModel = MockPreparedModel::create();
     EXPECT_CALL(*mockDevice, prepareModelFromCache(_, _, _, _, _))
             .Times(1)
@@ -721,10 +704,10 @@
     EXPECT_NE(result.value(), nullptr);
 }
 
-TEST_P(DeviceTest, prepareModelFromCacheLaunchError) {
+TEST(DeviceTest, prepareModelFromCacheLaunchError) {
     // setup call
     const auto mockDevice = createMockDevice();
-    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    const auto device = Device::create(kName, mockDevice).value();
     EXPECT_CALL(*mockDevice, prepareModelFromCache(_, _, _, _, _))
             .Times(1)
             .WillOnce(Invoke(makePreparedModelFromCacheReturn(
@@ -738,10 +721,10 @@
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST_P(DeviceTest, prepareModelFromCacheReturnError) {
+TEST(DeviceTest, prepareModelFromCacheReturnError) {
     // setup call
     const auto mockDevice = createMockDevice();
-    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    const auto device = Device::create(kName, mockDevice).value();
     EXPECT_CALL(*mockDevice, prepareModelFromCache(_, _, _, _, _))
             .Times(1)
             .WillOnce(Invoke(makePreparedModelFromCacheReturn(
@@ -755,10 +738,10 @@
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST_P(DeviceTest, prepareModelFromCacheNullptrError) {
+TEST(DeviceTest, prepareModelFromCacheNullptrError) {
     // setup call
     const auto mockDevice = createMockDevice();
-    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    const auto device = Device::create(kName, mockDevice).value();
     EXPECT_CALL(*mockDevice, prepareModelFromCache(_, _, _, _, _))
             .Times(1)
             .WillOnce(Invoke(makePreparedModelFromCacheReturn(ErrorStatus::NONE, ErrorStatus::NONE,
@@ -772,10 +755,10 @@
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST_P(DeviceTest, prepareModelFromCacheTransportFailure) {
+TEST(DeviceTest, prepareModelFromCacheTransportFailure) {
     // setup call
     const auto mockDevice = createMockDevice();
-    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    const auto device = Device::create(kName, mockDevice).value();
     EXPECT_CALL(*mockDevice, prepareModelFromCache(_, _, _, _, _))
             .Times(1)
             .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
@@ -788,10 +771,10 @@
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST_P(DeviceTest, prepareModelFromCacheDeadObject) {
+TEST(DeviceTest, prepareModelFromCacheDeadObject) {
     // setup call
     const auto mockDevice = createMockDevice();
-    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    const auto device = Device::create(kName, mockDevice).value();
     EXPECT_CALL(*mockDevice, prepareModelFromCache(_, _, _, _, _))
             .Times(1)
             .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
@@ -804,10 +787,10 @@
     EXPECT_EQ(result.error().code, nn::ErrorStatus::DEAD_OBJECT);
 }
 
-TEST_P(DeviceTest, prepareModelFromCacheAsyncCrash) {
+TEST(DeviceTest, prepareModelFromCacheAsyncCrash) {
     // setup test
     const auto mockDevice = createMockDevice();
-    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    const auto device = Device::create(kName, mockDevice).value();
     const auto ret = [&device]() {
         DeathMonitor::serviceDied(device->getDeathMonitor());
         return ndk::ScopedAStatus::ok();
@@ -824,10 +807,10 @@
     EXPECT_EQ(result.error().code, nn::ErrorStatus::DEAD_OBJECT);
 }
 
-TEST_P(DeviceTest, allocate) {
+TEST(DeviceTest, allocate) {
     // setup call
     const auto mockDevice = createMockDevice();
-    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    const auto device = Device::create(kName, mockDevice).value();
     const auto mockBuffer = DeviceBuffer{.buffer = MockBuffer::create(), .token = 1};
     EXPECT_CALL(*mockDevice, allocate(_, _, _, _, _))
             .Times(1)
@@ -842,10 +825,10 @@
     EXPECT_NE(result.value(), nullptr);
 }
 
-TEST_P(DeviceTest, allocateError) {
+TEST(DeviceTest, allocateError) {
     // setup call
     const auto mockDevice = createMockDevice();
-    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    const auto device = Device::create(kName, mockDevice).value();
     EXPECT_CALL(*mockDevice, allocate(_, _, _, _, _))
             .Times(1)
             .WillOnce(InvokeWithoutArgs(makeGeneralFailure));
@@ -858,10 +841,10 @@
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST_P(DeviceTest, allocateTransportFailure) {
+TEST(DeviceTest, allocateTransportFailure) {
     // setup call
     const auto mockDevice = createMockDevice();
-    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    const auto device = Device::create(kName, mockDevice).value();
     EXPECT_CALL(*mockDevice, allocate(_, _, _, _, _))
             .Times(1)
             .WillOnce(InvokeWithoutArgs(makeGeneralTransportFailure));
@@ -874,10 +857,10 @@
     EXPECT_EQ(result.error().code, nn::ErrorStatus::GENERAL_FAILURE);
 }
 
-TEST_P(DeviceTest, allocateDeadObject) {
+TEST(DeviceTest, allocateDeadObject) {
     // setup call
     const auto mockDevice = createMockDevice();
-    const auto device = Device::create(kName, mockDevice, kVersion).value();
+    const auto device = Device::create(kName, mockDevice).value();
     EXPECT_CALL(*mockDevice, allocate(_, _, _, _, _))
             .Times(1)
             .WillOnce(InvokeWithoutArgs(makeDeadObjectFailure));
@@ -890,8 +873,4 @@
     EXPECT_EQ(result.error().code, nn::ErrorStatus::DEAD_OBJECT);
 }
 
-INSTANTIATE_TEST_SUITE_P(TestDevice, DeviceTest,
-                         ::testing::Values(nn::Version::ANDROID_S, nn::Version::FEATURE_LEVEL_6),
-                         printDeviceTest);
-
 }  // namespace aidl::android::hardware::neuralnetworks::utils
diff --git a/neuralnetworks/aidl/vts/functional/Android.bp b/neuralnetworks/aidl/vts/functional/Android.bp
index 8fd8f4f..f64cf47 100644
--- a/neuralnetworks/aidl/vts/functional/Android.bp
+++ b/neuralnetworks/aidl/vts/functional/Android.bp
@@ -26,7 +26,6 @@
 cc_test {
     name: "VtsHalNeuralnetworksTargetTest",
     defaults: [
-        "neuralnetworks_use_latest_utils_hal_aidl",
         "neuralnetworks_vts_functional_defaults",
         "use_libaidlvintf_gtest_helper_static",
     ],
@@ -52,16 +51,19 @@
     static_libs: [
         "android.hardware.common-V2-ndk",
         "android.hardware.graphics.common-V3-ndk",
+        "android.hardware.neuralnetworks-V2-ndk",
         "android.hidl.allocator@1.0",
         "android.hidl.memory@1.0",
         "libaidlcommonsupport",
         "libgmock",
         "libhidlmemory",
-        "libneuralnetworks_common",
         "libneuralnetworks_generated_test_harness",
+        "libneuralnetworks_utils",
         "libsync",
+        "neuralnetworks_utils_hal_aidl",
     ],
     whole_static_libs: [
+        "neuralnetworks_generated_AIDL_V2_example",
         "neuralnetworks_generated_V1_0_example",
         "neuralnetworks_generated_V1_1_example",
         "neuralnetworks_generated_V1_2_example",
diff --git a/neuralnetworks/aidl/vts/functional/GeneratedTestHarness.cpp b/neuralnetworks/aidl/vts/functional/GeneratedTestHarness.cpp
index ac5b96a..f67fd34 100644
--- a/neuralnetworks/aidl/vts/functional/GeneratedTestHarness.cpp
+++ b/neuralnetworks/aidl/vts/functional/GeneratedTestHarness.cpp
@@ -907,6 +907,20 @@
     const bool deviceIsResponsive =
             ndk::ScopedAStatus::fromStatus(AIBinder_ping(kDevice->asBinder().get())).isOk();
     ASSERT_TRUE(deviceIsResponsive);
+    //  TODO(b/201260787): We should require old drivers to report the model as
+    //  unsupported instead of simply skipping the test.
+    SkipIfDriverOlderThanTestModel();
+}
+
+void GeneratedTestBase::SkipIfDriverOlderThanTestModel() {
+    int32_t deviceVersion;
+    ASSERT_TRUE(kDevice->getInterfaceVersion(&deviceVersion).isOk());
+    const int32_t modelVersion = kTestModel.getAidlVersionInt();
+    if (deviceVersion < modelVersion) {
+        GTEST_SKIP() << "Device interface version " << deviceVersion
+                     << " is older than test model's minimum supported HAL version " << modelVersion
+                     << ". Skipping test.";
+    }
 }
 
 std::vector<NamedModel> getNamedModels(const FilterFn& filter) {
diff --git a/neuralnetworks/aidl/vts/functional/GeneratedTestHarness.h b/neuralnetworks/aidl/vts/functional/GeneratedTestHarness.h
index ad40f06..da74db9 100644
--- a/neuralnetworks/aidl/vts/functional/GeneratedTestHarness.h
+++ b/neuralnetworks/aidl/vts/functional/GeneratedTestHarness.h
@@ -34,6 +34,9 @@
     void SetUp() override;
     const std::shared_ptr<IDevice> kDevice = getData(std::get<NamedDevice>(GetParam()));
     const test_helper::TestModel& kTestModel = *getData(std::get<NamedModel>(GetParam()));
+
+  private:
+    void SkipIfDriverOlderThanTestModel();
 };
 
 using FilterFn = std::function<bool(const test_helper::TestModel&)>;
diff --git a/neuralnetworks/aidl/vts/functional/ValidateModel.cpp b/neuralnetworks/aidl/vts/functional/ValidateModel.cpp
index 698c054..fdc7eff 100644
--- a/neuralnetworks/aidl/vts/functional/ValidateModel.cpp
+++ b/neuralnetworks/aidl/vts/functional/ValidateModel.cpp
@@ -1122,6 +1122,7 @@
     //   align_corners and half_pixel_centers parameters.
     // - L2_NORMALIZATION, LOCAL_RESPONSE_NORMALIZATION, SOFTMAX can have an optional axis
     //   parameter.
+    // - PACK has at least 2 inputs, with the first element being INT32.
     switch (op.type) {
         case OperationType::CONCATENATION: {
             if (op.inputs.size() > 2 && input != op.inputs.size() - 1) {
@@ -1178,6 +1179,11 @@
                 return true;
             }
         } break;
+        case OperationType::PACK: {
+            if (op.inputs.size() > 2 && input != 0) {
+                return true;
+            }
+        } break;
         default:
             break;
     }
@@ -1315,8 +1321,8 @@
 
 void validateModel(const std::shared_ptr<IDevice>& device, const Model& model) {
     const auto numberOfConsumers =
-            nn::countNumberOfConsumers(model.main.operands.size(),
-                                       nn::unvalidatedConvert(model.main.operations).value())
+            countNumberOfConsumers(model.main.operands.size(),
+                                   nn::unvalidatedConvert(model.main.operations).value())
                     .value();
     mutateExecutionOrderTest(device, model, numberOfConsumers);
     mutateOperandTypeTest(device, model);
diff --git a/neuralnetworks/utils/adapter/src/PreparedModel.cpp b/neuralnetworks/utils/adapter/src/PreparedModel.cpp
index 7397def..40c0888 100644
--- a/neuralnetworks/utils/adapter/src/PreparedModel.cpp
+++ b/neuralnetworks/utils/adapter/src/PreparedModel.cpp
@@ -36,7 +36,6 @@
 #include <nnapi/hal/1.2/Utils.h>
 #include <nnapi/hal/1.3/Conversions.h>
 #include <nnapi/hal/1.3/Utils.h>
-#include <nnapi/hal/HandleError.h>
 #include <sys/types.h>
 
 #include <memory>
diff --git a/neuralnetworks/utils/common/Android.bp b/neuralnetworks/utils/common/Android.bp
index c0645b0..e02a202 100644
--- a/neuralnetworks/utils/common/Android.bp
+++ b/neuralnetworks/utils/common/Android.bp
@@ -30,19 +30,8 @@
     local_include_dirs: ["include/nnapi/hal"],
     export_include_dirs: ["include"],
     cflags: ["-Wthread-safety"],
-    static_libs: [
-        "libarect",
-        "neuralnetworks_types",
-    ],
-    shared_libs: [
-        "libhidlbase",
-        "libbinder_ndk",
-    ],
-    target: {
-        android: {
-            shared_libs: ["libnativewindow"],
-        },
-    },
+    static_libs: ["neuralnetworks_types"],
+    shared_libs: ["libbinder_ndk"],
 }
 
 cc_test {
@@ -50,9 +39,8 @@
     host_supported: true,
     srcs: ["test/*.cpp"],
     static_libs: [
-        "android.hardware.neuralnetworks@1.0",
         "libgmock",
-        "libneuralnetworks_common_hidl",
+        "libneuralnetworks_common",
         "neuralnetworks_types",
         "neuralnetworks_utils_hal_common",
     ],
diff --git a/neuralnetworks/utils/common/include/nnapi/hal/CommonUtils.h b/neuralnetworks/utils/common/include/nnapi/hal/CommonUtils.h
index 702ee92..ae0d092 100644
--- a/neuralnetworks/utils/common/include/nnapi/hal/CommonUtils.h
+++ b/neuralnetworks/utils/common/include/nnapi/hal/CommonUtils.h
@@ -17,8 +17,6 @@
 #ifndef ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_COMMON_COMMON_UTILS_H
 #define ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_COMMON_COMMON_UTILS_H
 
-#include <cutils/native_handle.h>
-#include <hidl/HidlSupport.h>
 #include <nnapi/Result.h>
 #include <nnapi/SharedMemory.h>
 #include <nnapi/Types.h>
@@ -125,18 +123,6 @@
         const nn::Request* request, uint32_t alignment, uint32_t padding,
         std::optional<nn::Request>* maybeRequestInSharedOut, RequestRelocation* relocationOut);
 
-nn::GeneralResult<std::vector<uint32_t>> countNumberOfConsumers(
-        size_t numberOfOperands, const std::vector<nn::Operation>& operations);
-
-nn::GeneralResult<hidl_memory> createHidlMemoryFromSharedMemory(const nn::SharedMemory& memory);
-nn::GeneralResult<nn::SharedMemory> createSharedMemoryFromHidlMemory(const hidl_memory& memory);
-
-nn::GeneralResult<hidl_handle> hidlHandleFromSharedHandle(const nn::Handle& handle);
-nn::GeneralResult<nn::Handle> sharedHandleFromNativeHandle(const native_handle_t* handle);
-
-nn::GeneralResult<hidl_vec<hidl_handle>> convertSyncFences(
-        const std::vector<nn::SyncFence>& fences);
-
 }  // namespace android::hardware::neuralnetworks::utils
 
 #endif  // ANDROID_HARDWARE_INTERFACES_NEURALNETWORKS_UTILS_COMMON_COMMON_UTILS_H
diff --git a/neuralnetworks/utils/common/src/CommonUtils.cpp b/neuralnetworks/utils/common/src/CommonUtils.cpp
index 235ba29..b249881 100644
--- a/neuralnetworks/utils/common/src/CommonUtils.cpp
+++ b/neuralnetworks/utils/common/src/CommonUtils.cpp
@@ -16,11 +16,7 @@
 
 #include "CommonUtils.h"
 
-#include "HandleError.h"
-
 #include <android-base/logging.h>
-#include <android-base/unique_fd.h>
-#include <hidl/HidlSupport.h>
 #include <nnapi/Result.h>
 #include <nnapi/SharedMemory.h>
 #include <nnapi/TypeUtils.h>
@@ -34,11 +30,6 @@
 #include <variant>
 #include <vector>
 
-#ifdef __ANDROID__
-#include <android/hardware_buffer.h>
-#include <vndk/hardware_buffer.h>
-#endif  // __ANDROID__
-
 namespace android::hardware::neuralnetworks::utils {
 namespace {
 
@@ -92,97 +83,6 @@
                   });
 }
 
-nn::GeneralResult<hidl_handle> createNativeHandleFrom(std::vector<base::unique_fd> fds,
-                                                      const std::vector<int32_t>& ints) {
-    constexpr size_t kIntMax = std::numeric_limits<int>::max();
-    CHECK_LE(fds.size(), kIntMax);
-    CHECK_LE(ints.size(), kIntMax);
-    native_handle_t* nativeHandle =
-            native_handle_create(static_cast<int>(fds.size()), static_cast<int>(ints.size()));
-    if (nativeHandle == nullptr) {
-        return NN_ERROR() << "Failed to create native_handle";
-    }
-
-    for (size_t i = 0; i < fds.size(); ++i) {
-        nativeHandle->data[i] = fds[i].release();
-    }
-    std::copy(ints.begin(), ints.end(), nativeHandle->data + nativeHandle->numFds);
-
-    hidl_handle handle;
-    handle.setTo(nativeHandle, /*shouldOwn=*/true);
-    return handle;
-}
-
-nn::GeneralResult<hidl_handle> createNativeHandleFrom(base::unique_fd fd,
-                                                      const std::vector<int32_t>& ints) {
-    std::vector<base::unique_fd> fds;
-    fds.push_back(std::move(fd));
-    return createNativeHandleFrom(std::move(fds), ints);
-}
-
-nn::GeneralResult<hidl_handle> createNativeHandleFrom(const nn::Memory::Unknown::Handle& handle) {
-    std::vector<base::unique_fd> fds = NN_TRY(nn::dupFds(handle.fds.begin(), handle.fds.end()));
-    return createNativeHandleFrom(std::move(fds), handle.ints);
-}
-
-nn::GeneralResult<hidl_memory> createHidlMemoryFrom(const nn::Memory::Ashmem& memory) {
-    auto fd = NN_TRY(nn::dupFd(memory.fd));
-    auto handle = NN_TRY(createNativeHandleFrom(std::move(fd), {}));
-    return hidl_memory("ashmem", std::move(handle), memory.size);
-}
-
-nn::GeneralResult<hidl_memory> createHidlMemoryFrom(const nn::Memory::Fd& memory) {
-    auto fd = NN_TRY(nn::dupFd(memory.fd));
-
-    const auto [lowOffsetBits, highOffsetBits] = nn::getIntsFromOffset(memory.offset);
-    const std::vector<int> ints = {memory.prot, lowOffsetBits, highOffsetBits};
-
-    auto handle = NN_TRY(createNativeHandleFrom(std::move(fd), ints));
-    return hidl_memory("mmap_fd", std::move(handle), memory.size);
-}
-
-nn::GeneralResult<hidl_memory> createHidlMemoryFrom(const nn::Memory::HardwareBuffer& memory) {
-#ifdef __ANDROID__
-    const auto* ahwb = memory.handle.get();
-    AHardwareBuffer_Desc bufferDesc;
-    AHardwareBuffer_describe(ahwb, &bufferDesc);
-
-    const bool isBlob = bufferDesc.format == AHARDWAREBUFFER_FORMAT_BLOB;
-    const size_t size = isBlob ? bufferDesc.width : 0;
-    const char* const name = isBlob ? "hardware_buffer_blob" : "hardware_buffer";
-
-    const native_handle_t* nativeHandle = AHardwareBuffer_getNativeHandle(ahwb);
-    const hidl_handle hidlHandle(nativeHandle);
-    hidl_handle copiedHandle(hidlHandle);
-
-    return hidl_memory(name, std::move(copiedHandle), size);
-#else   // __ANDROID__
-    LOG(FATAL) << "nn::GeneralResult<hidl_memory> createHidlMemoryFrom(const "
-                  "nn::Memory::HardwareBuffer& memory): Not Available on Host Build";
-    (void)memory;
-    return (NN_ERROR() << "createHidlMemoryFrom failed").operator nn::GeneralResult<hidl_memory>();
-#endif  // __ANDROID__
-}
-
-nn::GeneralResult<hidl_memory> createHidlMemoryFrom(const nn::Memory::Unknown& memory) {
-    return hidl_memory(memory.name, NN_TRY(createNativeHandleFrom(memory.handle)), memory.size);
-}
-
-nn::GeneralResult<nn::Memory::Unknown::Handle> unknownHandleFromNativeHandle(
-        const native_handle_t* handle) {
-    if (handle == nullptr) {
-        return NN_ERROR() << "unknownHandleFromNativeHandle failed because handle is nullptr";
-    }
-
-    std::vector<base::unique_fd> fds =
-            NN_TRY(nn::dupFds(handle->data + 0, handle->data + handle->numFds));
-
-    std::vector<int> ints(handle->data + handle->numFds,
-                          handle->data + handle->numFds + handle->numInts);
-
-    return nn::Memory::Unknown::Handle{.fds = std::move(fds), .ints = std::move(ints)};
-}
-
 }  // anonymous namespace
 
 nn::Capabilities::OperandPerformanceTable makeQuantized8PerformanceConsistentWithP(
@@ -331,147 +231,4 @@
     return **maybeRequestInSharedOut;
 }
 
-nn::GeneralResult<std::vector<uint32_t>> countNumberOfConsumers(
-        size_t numberOfOperands, const std::vector<nn::Operation>& operations) {
-    return nn::countNumberOfConsumers(numberOfOperands, operations);
-}
-
-nn::GeneralResult<hidl_memory> createHidlMemoryFromSharedMemory(const nn::SharedMemory& memory) {
-    if (memory == nullptr) {
-        return NN_ERROR() << "Memory must be non-empty";
-    }
-    return std::visit([](const auto& x) { return createHidlMemoryFrom(x); }, memory->handle);
-}
-
-#ifdef __ANDROID__
-static uint32_t roundUpToMultiple(uint32_t value, uint32_t multiple) {
-    return (value + multiple - 1) / multiple * multiple;
-}
-#endif  // __ANDROID__
-
-nn::GeneralResult<nn::SharedMemory> createSharedMemoryFromHidlMemory(const hidl_memory& memory) {
-    CHECK_LE(memory.size(), std::numeric_limits<size_t>::max());
-    if (!memory.valid()) {
-        return NN_ERROR() << "Unable to convert invalid hidl_memory";
-    }
-
-    if (memory.name() == "ashmem") {
-        if (memory.handle()->numFds != 1) {
-            return NN_ERROR() << "Unable to convert invalid ashmem memory object with "
-                              << memory.handle()->numFds << " numFds, but expected 1";
-        }
-        if (memory.handle()->numInts != 0) {
-            return NN_ERROR() << "Unable to convert invalid ashmem memory object with "
-                              << memory.handle()->numInts << " numInts, but expected 0";
-        }
-        auto handle = nn::Memory::Ashmem{
-                .fd = NN_TRY(nn::dupFd(memory.handle()->data[0])),
-                .size = static_cast<size_t>(memory.size()),
-        };
-        return std::make_shared<const nn::Memory>(nn::Memory{.handle = std::move(handle)});
-    }
-
-    if (memory.name() == "mmap_fd") {
-        if (memory.handle()->numFds != 1) {
-            return NN_ERROR() << "Unable to convert invalid mmap_fd memory object with "
-                              << memory.handle()->numFds << " numFds, but expected 1";
-        }
-        if (memory.handle()->numInts != 3) {
-            return NN_ERROR() << "Unable to convert invalid mmap_fd memory object with "
-                              << memory.handle()->numInts << " numInts, but expected 3";
-        }
-
-        const int fd = memory.handle()->data[0];
-        const int prot = memory.handle()->data[1];
-        const int lower = memory.handle()->data[2];
-        const int higher = memory.handle()->data[3];
-        const size_t offset = nn::getOffsetFromInts(lower, higher);
-
-        return nn::createSharedMemoryFromFd(static_cast<size_t>(memory.size()), prot, fd, offset);
-    }
-
-    if (memory.name() != "hardware_buffer_blob") {
-        auto handle = nn::Memory::Unknown{
-                .handle = NN_TRY(unknownHandleFromNativeHandle(memory.handle())),
-                .size = static_cast<size_t>(memory.size()),
-                .name = memory.name(),
-        };
-        return std::make_shared<const nn::Memory>(nn::Memory{.handle = std::move(handle)});
-    }
-
-#ifdef __ANDROID__
-    const auto size = memory.size();
-    const auto format = AHARDWAREBUFFER_FORMAT_BLOB;
-    const auto usage = AHARDWAREBUFFER_USAGE_CPU_READ_OFTEN | AHARDWAREBUFFER_USAGE_CPU_WRITE_OFTEN;
-    const uint32_t width = size;
-    const uint32_t height = 1;  // height is always 1 for BLOB mode AHardwareBuffer.
-    const uint32_t layers = 1;  // layers is always 1 for BLOB mode AHardwareBuffer.
-
-    // AHardwareBuffer_createFromHandle() might fail because an allocator
-    // expects a specific stride value. In that case, we try to guess it by
-    // aligning the width to small powers of 2.
-    // TODO(b/174120849): Avoid stride assumptions.
-    AHardwareBuffer* hardwareBuffer = nullptr;
-    status_t status = UNKNOWN_ERROR;
-    for (uint32_t alignment : {1, 4, 32, 64, 128, 2, 8, 16}) {
-        const uint32_t stride = roundUpToMultiple(width, alignment);
-        AHardwareBuffer_Desc desc{
-                .width = width,
-                .height = height,
-                .layers = layers,
-                .format = format,
-                .usage = usage,
-                .stride = stride,
-        };
-        status = AHardwareBuffer_createFromHandle(&desc, memory.handle(),
-                                                  AHARDWAREBUFFER_CREATE_FROM_HANDLE_METHOD_CLONE,
-                                                  &hardwareBuffer);
-        if (status == NO_ERROR) {
-            break;
-        }
-    }
-    if (status != NO_ERROR) {
-        return NN_ERROR(nn::ErrorStatus::GENERAL_FAILURE)
-               << "Can't create AHardwareBuffer from handle. Error: " << status;
-    }
-
-    return nn::createSharedMemoryFromAHWB(hardwareBuffer, /*takeOwnership=*/true);
-#else   // __ANDROID__
-    LOG(FATAL) << "nn::GeneralResult<nn::SharedMemory> createSharedMemoryFromHidlMemory(const "
-                  "hidl_memory& memory): Not Available on Host Build";
-    return (NN_ERROR() << "createSharedMemoryFromHidlMemory failed")
-            .
-            operator nn::GeneralResult<nn::SharedMemory>();
-#endif  // __ANDROID__
-}
-
-nn::GeneralResult<hidl_handle> hidlHandleFromSharedHandle(const nn::Handle& handle) {
-    base::unique_fd fd = NN_TRY(nn::dupFd(handle.get()));
-    return createNativeHandleFrom(std::move(fd), {});
-}
-
-nn::GeneralResult<nn::Handle> sharedHandleFromNativeHandle(const native_handle_t* handle) {
-    if (handle == nullptr) {
-        return NN_ERROR() << "sharedHandleFromNativeHandle failed because handle is nullptr";
-    }
-    if (handle->numFds != 1 || handle->numInts != 0) {
-        return NN_ERROR() << "sharedHandleFromNativeHandle failed because handle does not only "
-                             "hold a single fd";
-    }
-    return nn::dupFd(handle->data[0]);
-}
-
-nn::GeneralResult<hidl_vec<hidl_handle>> convertSyncFences(
-        const std::vector<nn::SyncFence>& syncFences) {
-    hidl_vec<hidl_handle> handles(syncFences.size());
-    for (size_t i = 0; i < syncFences.size(); ++i) {
-        const auto& handle = syncFences[i].getSharedHandle();
-        if (handle == nullptr) {
-            return NN_ERROR() << "convertSyncFences failed because sync fence is empty";
-        }
-        handles[i] = NN_TRY(hidlHandleFromSharedHandle(*handle));
-    }
-    return handles;
-}
-
 }  // namespace android::hardware::neuralnetworks::utils
diff --git a/neuralnetworks/utils/service/Android.bp b/neuralnetworks/utils/service/Android.bp
index 3288d05..fbb8679 100644
--- a/neuralnetworks/utils/service/Android.bp
+++ b/neuralnetworks/utils/service/Android.bp
@@ -25,10 +25,7 @@
 
 cc_library_static {
     name: "neuralnetworks_utils_hal_service",
-    defaults: [
-        "neuralnetworks_use_latest_utils_hal_aidl",
-        "neuralnetworks_utils_defaults",
-    ],
+    defaults: ["neuralnetworks_utils_defaults"],
     srcs: ["src/*"],
     local_include_dirs: ["include/nnapi/hal"],
     export_include_dirs: ["include"],
@@ -38,9 +35,11 @@
         "neuralnetworks_utils_hal_1_1",
         "neuralnetworks_utils_hal_1_2",
         "neuralnetworks_utils_hal_1_3",
+        "neuralnetworks_utils_hal_aidl",
         "neuralnetworks_utils_hal_common",
     ],
     shared_libs: [
+        "android.hardware.neuralnetworks-V2-ndk",
         "android.hardware.neuralnetworks@1.0",
         "android.hardware.neuralnetworks@1.1",
         "android.hardware.neuralnetworks@1.2",
diff --git a/radio/1.6/vts/functional/radio_hidl_hal_api.cpp b/radio/1.6/vts/functional/radio_hidl_hal_api.cpp
index d3f0cf9..44f9865 100644
--- a/radio/1.6/vts/functional/radio_hidl_hal_api.cpp
+++ b/radio/1.6/vts/functional/radio_hidl_hal_api.cpp
@@ -606,7 +606,8 @@
     if (radioRsp_v1_6->rspInfo.error == ::android::hardware::radio::V1_6::RadioError::NONE) {
         /* Wait some time for setting sim power down and then verify it */
         updateSimCardStatus();
-        EXPECT_EQ(CardState::PRESENT, cardStatus.base.base.base.cardState);
+        // We cannot assert the consistency of CardState here due to b/203031664
+        // EXPECT_EQ(CardState::PRESENT, cardStatus.base.base.base.cardState);
         // applications should be an empty vector of AppStatus
         EXPECT_EQ(0, cardStatus.applications.size());
     }
diff --git a/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/IRadioNetworkIndication.aidl b/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/IRadioNetworkIndication.aidl
index 71b1765..d135a69 100644
--- a/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/IRadioNetworkIndication.aidl
+++ b/radio/aidl/aidl_api/android.hardware.radio.network/current/android/hardware/radio/network/IRadioNetworkIndication.aidl
@@ -43,7 +43,7 @@
   oneway void imsNetworkStateChanged(in android.hardware.radio.RadioIndicationType type);
   oneway void networkScanResult(in android.hardware.radio.RadioIndicationType type, in android.hardware.radio.network.NetworkScanResult result);
   oneway void networkStateChanged(in android.hardware.radio.RadioIndicationType type);
-  oneway void nitzTimeReceived(in android.hardware.radio.RadioIndicationType type, in String nitzTime, in long receivedTime);
+  oneway void nitzTimeReceived(in android.hardware.radio.RadioIndicationType type, in String nitzTime, in long receivedTimeMs, in long ageMs);
   oneway void registrationFailed(in android.hardware.radio.RadioIndicationType type, in android.hardware.radio.network.CellIdentity cellIdentity, in String chosenPlmn, in android.hardware.radio.network.Domain domain, in int causeCode, in int additionalCauseCode);
   oneway void restrictedStateChanged(in android.hardware.radio.RadioIndicationType type, in android.hardware.radio.network.PhoneRestrictedState state);
   oneway void suppSvcNotify(in android.hardware.radio.RadioIndicationType type, in android.hardware.radio.network.SuppSvcNotification suppSvc);
diff --git a/radio/aidl/android/hardware/radio/network/IRadioNetworkIndication.aidl b/radio/aidl/android/hardware/radio/network/IRadioNetworkIndication.aidl
index a2fac20..ba7610d 100644
--- a/radio/aidl/android/hardware/radio/network/IRadioNetworkIndication.aidl
+++ b/radio/aidl/android/hardware/radio/network/IRadioNetworkIndication.aidl
@@ -129,9 +129,15 @@
      *
      * @param type Type of radio indication
      * @param nitzTime NITZ time string in the form "yy/mm/dd,hh:mm:ss(+/-)tz,dt"
-     * @param receivedTime milliseconds since boot that the NITZ time was received
+     * @param receivedTimeMs time (in milliseconds since boot) at which RIL sent the NITZ time to
+     *        the framework
+     * @param ageMs time in milliseconds indicating how long NITZ was cached in RIL and modem.
+     *        This must track true age and therefore must be calculated using clocks that
+     *        include the time spend in sleep / low power states. If it can not be guaranteed,
+     *        there must not be any caching done at the modem and should fill in 0 for ageMs
      */
-    void nitzTimeReceived(in RadioIndicationType type, in String nitzTime, in long receivedTime);
+    void nitzTimeReceived(in RadioIndicationType type, in String nitzTime,
+            in long receivedTimeMs, in long ageMs);
 
     /**
      * Report that Registration or a Location/Routing/Tracking Area update has failed.
diff --git a/security/keymint/support/Android.bp b/security/keymint/support/Android.bp
index bdb4cdf..e162934 100644
--- a/security/keymint/support/Android.bp
+++ b/security/keymint/support/Android.bp
@@ -25,6 +25,7 @@
 
 cc_library {
     name: "libkeymint_support",
+    vendor_available: true,
     cflags: [
         "-Wall",
         "-Wextra",
@@ -44,6 +45,7 @@
         "libbase",
         "libcrypto",
         "libutils",
+        "libhardware",
     ],
 }