diff --git a/graphics/allocator/2.0/default/android.hardware.graphics.allocator@2.0-service.rc b/graphics/allocator/2.0/default/android.hardware.graphics.allocator@2.0-service.rc
index 6eee71f..a2a881a 100644
--- a/graphics/allocator/2.0/default/android.hardware.graphics.allocator@2.0-service.rc
+++ b/graphics/allocator/2.0/default/android.hardware.graphics.allocator@2.0-service.rc
@@ -1,5 +1,6 @@
 service vendor.gralloc-2-0 /vendor/bin/hw/android.hardware.graphics.allocator@2.0-service
     class hal animation
+    interface android.hardware.graphics.allocator@2.0::IAllocator default
     user system
     group graphics drmrpc
     capabilities SYS_NICE
diff --git a/neuralnetworks/1.0/vts/functional/GeneratedTestHarness.cpp b/neuralnetworks/1.0/vts/functional/GeneratedTestHarness.cpp
index 8d427b1..b7a6f3f 100644
--- a/neuralnetworks/1.0/vts/functional/GeneratedTestHarness.cpp
+++ b/neuralnetworks/1.0/vts/functional/GeneratedTestHarness.cpp
@@ -375,7 +375,7 @@
         std::cout << "[          ]   Early termination of test because vendor service cannot "
                      "prepare model that it does not support."
                   << std::endl;
-        return;
+        GTEST_SKIP();
     }
     EXPECT_EQ(ErrorStatus::NONE, prepareReturnStatus);
     ASSERT_NE(nullptr, preparedModel.get());
@@ -423,7 +423,7 @@
         std::cout << "[          ]   Early termination of test because vendor service cannot "
                      "prepare model that it does not support."
                   << std::endl;
-        return;
+        GTEST_SKIP();
     }
     EXPECT_EQ(ErrorStatus::NONE, prepareReturnStatus);
     ASSERT_NE(nullptr, preparedModel.get());
@@ -472,7 +472,7 @@
         std::cout << "[          ]   Early termination of test because vendor service cannot "
                      "prepare model that it does not support."
                   << std::endl;
-        return;
+        GTEST_SKIP();
     }
     EXPECT_EQ(ErrorStatus::NONE, prepareReturnStatus);
     ASSERT_NE(nullptr, preparedModel.get());
diff --git a/neuralnetworks/1.2/types.hal b/neuralnetworks/1.2/types.hal
index 0abe56d..4d5f0f4 100644
--- a/neuralnetworks/1.2/types.hal
+++ b/neuralnetworks/1.2/types.hal
@@ -97,10 +97,10 @@
      */
     TENSOR_QUANT16_ASYMM = 12,
     /* ADDING A NEW FUNDAMENTAL TYPE REQUIRES UPDATING THE VALUE OF
-     * OperandTypeRange::OPERAND_FUNDAMENTAL_MAX.
+     * OperandTypeRange::FUNDAMENTAL_MAX.
      */
     /* ADDING A NEW OEM TYPE REQUIRES UPDATING THE VALUE OF
-     * OperandTypeRange::OPERAND_OEM_MAX.
+     * OperandTypeRange::OEM_MAX.
      */
 };
 
@@ -108,10 +108,10 @@
  * The range of operand values in the OperandType enum.
  */
 enum OperandTypeRange : uint32_t {
-    OPERAND_FUNDAMENTAL_MIN = 0,
-    OPERAND_FUNDAMENTAL_MAX = 12,
-    OPERAND_OEM_MIN     = 10000,
-    OPERAND_OEM_MAX     = 10001,
+    FUNDAMENTAL_MIN = 0,
+    FUNDAMENTAL_MAX = 12,
+    OEM_MIN     = 10000,
+    OEM_MAX     = 10001,
 };
 
 /**
@@ -178,10 +178,10 @@
     UNIDIRECTIONAL_SEQUENCE_LSTM = 92,
     UNIDIRECTIONAL_SEQUENCE_RNN = 93,
     /* ADDING A NEW FUNDAMENTAL OPERATION REQUIRES UPDATING THE VALUE OF
-     * OperationTypeRange::OPERATION_FUNDAMENTAL_MAX.
+     * OperationTypeRange::FUNDAMENTAL_MAX.
      */
     /* ADDING A NEW OEM OPERATION REQUIRES UPDATING THE VALUE OF
-     * OperationTypeRange::OPERATION_OEM_MAX.
+     * OperationTypeRange::OEM_MAX.
      */
 };
 
@@ -189,10 +189,10 @@
  * The range of values in the OperationType enum.
  */
 enum OperationTypeRange : uint32_t {
-    OPERATION_FUNDAMENTAL_MIN = 0,
-    OPERATION_FUNDAMENTAL_MAX = 93,
-    OPERATION_OEM_MIN = 10000,
-    OPERATION_OEM_MAX = 10000,
+    FUNDAMENTAL_MIN = 0,
+    FUNDAMENTAL_MAX = 93,
+    OEM_MIN = 10000,
+    OEM_MAX = 10000,
 };
 
 /**
diff --git a/neuralnetworks/1.2/vts/functional/ValidateModel.cpp b/neuralnetworks/1.2/vts/functional/ValidateModel.cpp
index f3e528e..1bbb203 100644
--- a/neuralnetworks/1.2/vts/functional/ValidateModel.cpp
+++ b/neuralnetworks/1.2/vts/functional/ValidateModel.cpp
@@ -128,10 +128,10 @@
 ///////////////////////// VALIDATE MODEL OPERAND TYPE /////////////////////////
 
 static const uint32_t invalidOperandTypes[] = {
-    static_cast<uint32_t>(OperandTypeRange::OPERAND_FUNDAMENTAL_MIN) - 1,
-    static_cast<uint32_t>(OperandTypeRange::OPERAND_FUNDAMENTAL_MAX) + 1,
-    static_cast<uint32_t>(OperandTypeRange::OPERAND_OEM_MIN) - 1,
-    static_cast<uint32_t>(OperandTypeRange::OPERAND_OEM_MAX) + 1,
+        static_cast<uint32_t>(OperandTypeRange::FUNDAMENTAL_MIN) - 1,
+        static_cast<uint32_t>(OperandTypeRange::FUNDAMENTAL_MAX) + 1,
+        static_cast<uint32_t>(OperandTypeRange::OEM_MIN) - 1,
+        static_cast<uint32_t>(OperandTypeRange::OEM_MAX) + 1,
 };
 
 static void mutateOperandTypeTest(const sp<IDevice>& device, const Model& model) {
@@ -392,10 +392,10 @@
 ///////////////////////// VALIDATE MODEL OPERATION TYPE /////////////////////////
 
 static const uint32_t invalidOperationTypes[] = {
-    static_cast<uint32_t>(OperationTypeRange::OPERATION_FUNDAMENTAL_MIN) - 1,
-    static_cast<uint32_t>(OperationTypeRange::OPERATION_FUNDAMENTAL_MAX) + 1,
-    static_cast<uint32_t>(OperationTypeRange::OPERATION_OEM_MIN) - 1,
-    static_cast<uint32_t>(OperationTypeRange::OPERATION_OEM_MAX) + 1,
+        static_cast<uint32_t>(OperationTypeRange::FUNDAMENTAL_MIN) - 1,
+        static_cast<uint32_t>(OperationTypeRange::FUNDAMENTAL_MAX) + 1,
+        static_cast<uint32_t>(OperationTypeRange::OEM_MIN) - 1,
+        static_cast<uint32_t>(OperationTypeRange::OEM_MAX) + 1,
 };
 
 static void mutateOperationTypeTest(const sp<IDevice>& device, const Model& model) {
diff --git a/sensors/2.0/default/Sensor.cpp b/sensors/2.0/default/Sensor.cpp
index 168b402..373ab12 100644
--- a/sensors/2.0/default/Sensor.cpp
+++ b/sensors/2.0/default/Sensor.cpp
@@ -131,9 +131,9 @@
     event.sensorHandle = mSensorInfo.sensorHandle;
     event.sensorType = mSensorInfo.type;
     event.timestamp = ::android::elapsedRealtimeNano();
-    event.u.vec3.x = 1;
-    event.u.vec3.y = 2;
-    event.u.vec3.z = 3;
+    event.u.vec3.x = 0;
+    event.u.vec3.y = 0;
+    event.u.vec3.z = 0;
     event.u.vec3.status = SensorStatus::ACCURACY_HIGH;
     events.push_back(event);
     return events;
@@ -166,6 +166,31 @@
     return result;
 }
 
+OnChangeSensor::OnChangeSensor(ISensorsEventCallback* callback)
+    : Sensor(callback), mPreviousEventSet(false) {}
+
+void OnChangeSensor::activate(bool enable) {
+    Sensor::activate(enable);
+    if (!enable) {
+        mPreviousEventSet = false;
+    }
+}
+
+std::vector<Event> OnChangeSensor::readEvents() {
+    std::vector<Event> events = Sensor::readEvents();
+    std::vector<Event> outputEvents;
+
+    for (auto iter = events.begin(); iter != events.end(); ++iter) {
+        Event ev = *iter;
+        if (ev.u.vec3 != mPreviousEvent.u.vec3 || !mPreviousEventSet) {
+            outputEvents.push_back(ev);
+            mPreviousEvent = ev;
+            mPreviousEventSet = true;
+        }
+    }
+    return outputEvents;
+}
+
 AccelSensor::AccelSensor(int32_t sensorHandle, ISensorsEventCallback* callback) : Sensor(callback) {
     mSensorInfo.sensorHandle = sensorHandle;
     mSensorInfo.name = "Accel Sensor";
@@ -181,10 +206,162 @@
     mSensorInfo.fifoReservedEventCount = 0;
     mSensorInfo.fifoMaxEventCount = 0;
     mSensorInfo.requiredPermission = "";
-    mSensorInfo.flags =
-        static_cast<uint32_t>(SensorFlagBits::WAKE_UP | SensorFlagBits::DATA_INJECTION);
+    mSensorInfo.flags = static_cast<uint32_t>(SensorFlagBits::DATA_INJECTION);
 };
 
+PressureSensor::PressureSensor(int32_t sensorHandle, ISensorsEventCallback* callback)
+    : Sensor(callback) {
+    mSensorInfo.sensorHandle = sensorHandle;
+    mSensorInfo.name = "Pressure Sensor";
+    mSensorInfo.vendor = "Vendor String";
+    mSensorInfo.version = 1;
+    mSensorInfo.type = SensorType::PRESSURE;
+    mSensorInfo.typeAsString = "";
+    mSensorInfo.maxRange = 1100.0f;   // hPa
+    mSensorInfo.resolution = 1.0f;    // hPa
+    mSensorInfo.power = 0.001f;       // mA
+    mSensorInfo.minDelay = 28571.0f;  // microseconds
+    mSensorInfo.maxDelay = 0.0f;      // microseconds
+    mSensorInfo.fifoReservedEventCount = 0;
+    mSensorInfo.fifoMaxEventCount = 0;
+    mSensorInfo.requiredPermission = "";
+    mSensorInfo.flags = 0;
+};
+
+MagnetometerSensor::MagnetometerSensor(int32_t sensorHandle, ISensorsEventCallback* callback)
+    : Sensor(callback) {
+    mSensorInfo.sensorHandle = sensorHandle;
+    mSensorInfo.name = "Magnetic Field Sensor";
+    mSensorInfo.vendor = "Vendor String";
+    mSensorInfo.version = 1;
+    mSensorInfo.type = SensorType::MAGNETIC_FIELD;
+    mSensorInfo.typeAsString = "";
+    mSensorInfo.maxRange = 4911.0f;
+    mSensorInfo.resolution = 1.00f;
+    mSensorInfo.power = 0.001f;       // mA
+    mSensorInfo.minDelay = 14284.0f;  // microseconds
+    mSensorInfo.maxDelay = 0.0f;      // microseconds
+    mSensorInfo.fifoReservedEventCount = 0;
+    mSensorInfo.fifoMaxEventCount = 0;
+    mSensorInfo.requiredPermission = "";
+    mSensorInfo.flags = 0;
+};
+
+LightSensor::LightSensor(int32_t sensorHandle, ISensorsEventCallback* callback)
+    : OnChangeSensor(callback) {
+    mSensorInfo.sensorHandle = sensorHandle;
+    mSensorInfo.name = "Light Sensor";
+    mSensorInfo.vendor = "Vendor String";
+    mSensorInfo.version = 1;
+    mSensorInfo.type = SensorType::LIGHT;
+    mSensorInfo.typeAsString = "";
+    mSensorInfo.maxRange = 10000.0f;
+    mSensorInfo.resolution = 10.0f;
+    mSensorInfo.power = 0.001f;           // mA
+    mSensorInfo.minDelay = 20.0f * 1000;  // microseconds
+    mSensorInfo.maxDelay = 0;             // microseconds
+    mSensorInfo.fifoReservedEventCount = 0;
+    mSensorInfo.fifoMaxEventCount = 0;
+    mSensorInfo.requiredPermission = "";
+    mSensorInfo.flags = static_cast<uint32_t>(SensorFlagBits::ON_CHANGE_MODE);
+};
+
+ProximitySensor::ProximitySensor(int32_t sensorHandle, ISensorsEventCallback* callback)
+    : OnChangeSensor(callback) {
+    mSensorInfo.sensorHandle = sensorHandle;
+    mSensorInfo.name = "Proximity Sensor";
+    mSensorInfo.vendor = "Vendor String";
+    mSensorInfo.version = 1;
+    mSensorInfo.type = SensorType::PROXIMITY;
+    mSensorInfo.typeAsString = "";
+    mSensorInfo.maxRange = 5.0f;
+    mSensorInfo.resolution = 1.0f;
+    mSensorInfo.power = 0.012f;  // mA
+    mSensorInfo.minDelay = 500;  // microseconds
+    mSensorInfo.maxDelay = 2 * mSensorInfo.minDelay;
+    mSensorInfo.fifoReservedEventCount = 0;
+    mSensorInfo.fifoMaxEventCount = 0;
+    mSensorInfo.requiredPermission = "";
+    mSensorInfo.flags =
+            static_cast<uint32_t>(SensorFlagBits::ON_CHANGE_MODE | SensorFlagBits::WAKE_UP);
+};
+
+GyroSensor::GyroSensor(int32_t sensorHandle, ISensorsEventCallback* callback) : Sensor(callback) {
+    mSensorInfo.sensorHandle = sensorHandle;
+    mSensorInfo.name = "Gyro Sensor";
+    mSensorInfo.vendor = "Vendor String";
+    mSensorInfo.version = 1;
+    mSensorInfo.type = SensorType::GYROSCOPE;
+    mSensorInfo.typeAsString = "";
+    mSensorInfo.maxRange = 8.726639f;
+    mSensorInfo.resolution = 1.0f;
+    mSensorInfo.power = 0.001f;
+    mSensorInfo.minDelay = 4444;  // microseonds
+    mSensorInfo.maxDelay = 0;     // microseconds
+    mSensorInfo.fifoReservedEventCount = 0;
+    mSensorInfo.fifoMaxEventCount = 0;
+    mSensorInfo.requiredPermission = "";
+    mSensorInfo.flags = 0;
+};
+
+AmbientTempSensor::AmbientTempSensor(int32_t sensorHandle, ISensorsEventCallback* callback)
+    : OnChangeSensor(callback) {
+    mSensorInfo.sensorHandle = sensorHandle;
+    mSensorInfo.name = "Ambient Temp Sensor";
+    mSensorInfo.vendor = "Vendor String";
+    mSensorInfo.version = 1;
+    mSensorInfo.type = SensorType::AMBIENT_TEMPERATURE;
+    mSensorInfo.typeAsString = "";
+    mSensorInfo.maxRange = 80.0f;
+    mSensorInfo.resolution = 1.0f;
+    mSensorInfo.power = 0.001f;
+    mSensorInfo.minDelay = 4444;  // microseonds
+    mSensorInfo.maxDelay = 0;     // microseconds
+    mSensorInfo.fifoReservedEventCount = 0;
+    mSensorInfo.fifoMaxEventCount = 0;
+    mSensorInfo.requiredPermission = "";
+    mSensorInfo.flags = static_cast<uint32_t>(SensorFlagBits::ON_CHANGE_MODE);
+};
+
+DeviceTempSensor::DeviceTempSensor(int32_t sensorHandle, ISensorsEventCallback* callback)
+    : OnChangeSensor(callback) {
+    mSensorInfo.sensorHandle = sensorHandle;
+    mSensorInfo.name = "Device Temp Sensor";
+    mSensorInfo.vendor = "Vendor String";
+    mSensorInfo.version = 1;
+    mSensorInfo.type = SensorType::TEMPERATURE;
+    mSensorInfo.typeAsString = "";
+    mSensorInfo.maxRange = 80.0f;
+    mSensorInfo.resolution = 1.0f;
+    mSensorInfo.power = 0.001f;
+    mSensorInfo.minDelay = 4444;  // microseonds
+    mSensorInfo.maxDelay = 0;     // microseconds
+    mSensorInfo.fifoReservedEventCount = 0;
+    mSensorInfo.fifoMaxEventCount = 0;
+    mSensorInfo.requiredPermission = "";
+    mSensorInfo.flags = static_cast<uint32_t>(SensorFlagBits::ON_CHANGE_MODE);
+}
+
+RelativeHumiditySensor::RelativeHumiditySensor(int32_t sensorHandle,
+                                               ISensorsEventCallback* callback)
+    : OnChangeSensor(callback) {
+    mSensorInfo.sensorHandle = sensorHandle;
+    mSensorInfo.name = "Relative Humidity Sensor";
+    mSensorInfo.vendor = "Vendor String";
+    mSensorInfo.version = 1;
+    mSensorInfo.type = SensorType::RELATIVE_HUMIDITY;
+    mSensorInfo.typeAsString = "";
+    mSensorInfo.maxRange = 100.0f;
+    mSensorInfo.resolution = 1.0f;
+    mSensorInfo.power = 0.001f;
+    mSensorInfo.minDelay = 4444;  // microseonds
+    mSensorInfo.maxDelay = 0;     // microseconds
+    mSensorInfo.fifoReservedEventCount = 0;
+    mSensorInfo.fifoMaxEventCount = 0;
+    mSensorInfo.requiredPermission = "";
+    mSensorInfo.flags = static_cast<uint32_t>(SensorFlagBits::ON_CHANGE_MODE);
+}
+
 }  // namespace implementation
 }  // namespace V2_0
 }  // namespace sensors
diff --git a/sensors/2.0/default/Sensor.h b/sensors/2.0/default/Sensor.h
index 3ab2299..61900fa 100644
--- a/sensors/2.0/default/Sensor.h
+++ b/sensors/2.0/default/Sensor.h
@@ -50,7 +50,7 @@
 
     const SensorInfo& getSensorInfo() const;
     void batch(int32_t samplingPeriodNs);
-    void activate(bool enable);
+    virtual void activate(bool enable);
     Result flush();
 
     void setOperationMode(OperationMode mode);
@@ -79,11 +79,65 @@
     OperationMode mMode;
 };
 
+class OnChangeSensor : public Sensor {
+   public:
+    OnChangeSensor(ISensorsEventCallback* callback);
+
+    virtual void activate(bool enable) override;
+
+   protected:
+    virtual std::vector<Event> readEvents() override;
+
+   protected:
+    Event mPreviousEvent;
+    bool mPreviousEventSet;
+};
+
 class AccelSensor : public Sensor {
    public:
     AccelSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
 };
 
+class GyroSensor : public Sensor {
+   public:
+    GyroSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
+};
+
+class AmbientTempSensor : public OnChangeSensor {
+   public:
+    AmbientTempSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
+};
+
+class DeviceTempSensor : public OnChangeSensor {
+   public:
+    DeviceTempSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
+};
+
+class PressureSensor : public Sensor {
+   public:
+    PressureSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
+};
+
+class MagnetometerSensor : public Sensor {
+   public:
+    MagnetometerSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
+};
+
+class LightSensor : public OnChangeSensor {
+   public:
+    LightSensor(int32_t sensorHandle, ISensorsEventCallback* callback);
+};
+
+class ProximitySensor : public OnChangeSensor {
+   public:
+    ProximitySensor(int32_t sensorHandle, ISensorsEventCallback* callback);
+};
+
+class RelativeHumiditySensor : public OnChangeSensor {
+   public:
+    RelativeHumiditySensor(int32_t sensorHandle, ISensorsEventCallback* callback);
+};
+
 }  // namespace implementation
 }  // namespace V2_0
 }  // namespace sensors
diff --git a/sensors/2.0/default/Sensors.cpp b/sensors/2.0/default/Sensors.cpp
index 15fe86f..23dd26b 100644
--- a/sensors/2.0/default/Sensors.cpp
+++ b/sensors/2.0/default/Sensors.cpp
@@ -37,13 +37,20 @@
 
 Sensors::Sensors()
     : mEventQueueFlag(nullptr),
+      mNextHandle(1),
       mOutstandingWakeUpEvents(0),
       mReadWakeLockQueueRun(false),
       mAutoReleaseWakeLockTime(0),
       mHasWakeLock(false) {
-    std::shared_ptr<AccelSensor> accel =
-        std::make_shared<AccelSensor>(1 /* sensorHandle */, this /* callback */);
-    mSensors[accel->getSensorInfo().sensorHandle] = accel;
+    AddSensor<AccelSensor>();
+    AddSensor<GyroSensor>();
+    AddSensor<AmbientTempSensor>();
+    AddSensor<DeviceTempSensor>();
+    AddSensor<PressureSensor>();
+    AddSensor<MagnetometerSensor>();
+    AddSensor<LightSensor>();
+    AddSensor<ProximitySensor>();
+    AddSensor<RelativeHumiditySensor>();
 }
 
 Sensors::~Sensors() {
diff --git a/sensors/2.0/default/Sensors.h b/sensors/2.0/default/Sensors.h
index eba3f97..d06dd78 100644
--- a/sensors/2.0/default/Sensors.h
+++ b/sensors/2.0/default/Sensors.h
@@ -87,6 +87,16 @@
 
    private:
     /**
+     * Add a new sensor
+     */
+    template <class SensorType>
+    void AddSensor() {
+        std::shared_ptr<SensorType> sensor =
+                std::make_shared<SensorType>(mNextHandle++ /* sensorHandle */, this /* callback */);
+        mSensors[sensor->getSensorInfo().sensorHandle] = sensor;
+    }
+
+    /**
      * Utility function to delete the Event Flag
      */
     void deleteEventFlag();
@@ -132,6 +142,11 @@
     std::map<int32_t, std::shared_ptr<Sensor>> mSensors;
 
     /**
+     * The next available sensor handle
+     */
+    int32_t mNextHandle;
+
+    /**
      * Lock to protect writes to the FMQs
      */
     std::mutex mWriteLock;