diff --git a/CleanSpec.mk b/CleanSpec.mk
index 76594fb..1eca2a1 100644
--- a/CleanSpec.mk
+++ b/CleanSpec.mk
@@ -84,3 +84,4 @@
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/vendor/bin/hw/android.hardware.cas@1.1*)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/vendor/etc/init/android.hardware.cas@1.1*)
 $(call add-clean-step, rm -rf $(PRODUCT_OUT)/vendor/etc/vintf/manifest/android.hardware.cas@1.1*)
+$(call add-clean-step, rm -rf $(OUT_DIR)/soong/.intermediates/hardware/interfaces/wifi/1.4/android.hardware.wifi@1.4-adapter_genc++/)
diff --git a/audio/6.0/IDevice.hal b/audio/6.0/IDevice.hal
index 2347696..c2e310c 100644
--- a/audio/6.0/IDevice.hal
+++ b/audio/6.0/IDevice.hal
@@ -168,6 +168,25 @@
             generates (Result retval, AudioPatchHandle patch);
 
     /**
+     * Updates an audio patch.
+     *
+     * Use of this function is preferred to releasing and re-creating a patch
+     * as the HAL module can figure out a way of switching the route without
+     * causing audio disruption.
+     *
+     * @param previousPatch handle of the previous patch to update.
+     * @param sources new patch sources.
+     * @param sinks new patch sinks.
+     * @return retval operation completion status.
+     * @return patch updated patch handle.
+     */
+    updateAudioPatch(
+            AudioPatchHandle previousPatch,
+            vec<AudioPortConfig> sources,
+            vec<AudioPortConfig> sinks) generates (
+                    Result retval, AudioPatchHandle patch);
+
+    /**
      * Release an audio patch.
      *
      * @param patch patch handle.
diff --git a/audio/6.0/IStream.hal b/audio/6.0/IStream.hal
index d7d3c84..2ea1ab3 100644
--- a/audio/6.0/IStream.hal
+++ b/audio/6.0/IStream.hal
@@ -274,6 +274,7 @@
      *
      * @param minSizeFrames minimum buffer size requested. The actual buffer
      *                     size returned in struct MmapBufferInfo can be larger.
+     *                     The size must be a positive value.
      * @return retval OK in case the success.
      *                NOT_SUPPORTED on non mmap mode streams
      *                NOT_INITIALIZED in case of memory allocation error
diff --git a/audio/6.0/config/api/current.txt b/audio/6.0/config/api/current.txt
index adab3d2..6b49e5e 100644
--- a/audio/6.0/config/api/current.txt
+++ b/audio/6.0/config/api/current.txt
@@ -258,8 +258,10 @@
 
   public class GlobalConfiguration {
     ctor public GlobalConfiguration();
+    method public boolean getCall_screen_mode_supported();
     method public audio.policy.configuration.V6_0.EngineSuffix getEngine_library();
     method public boolean getSpeaker_drc_enabled();
+    method public void setCall_screen_mode_supported(boolean);
     method public void setEngine_library(audio.policy.configuration.V6_0.EngineSuffix);
     method public void setSpeaker_drc_enabled(boolean);
   }
diff --git a/audio/6.0/config/audio_policy_configuration.xsd b/audio/6.0/config/audio_policy_configuration.xsd
index 3fc60e2..341c6b3 100644
--- a/audio/6.0/config/audio_policy_configuration.xsd
+++ b/audio/6.0/config/audio_policy_configuration.xsd
@@ -66,6 +66,7 @@
     </xs:element>
     <xs:complexType name="globalConfiguration">
         <xs:attribute name="speaker_drc_enabled" type="xs:boolean" use="required"/>
+        <xs:attribute name="call_screen_mode_supported" type="xs:boolean" use="optional"/>
         <xs:attribute name="engine_library" type="engineSuffix" use="optional"/>
     </xs:complexType>
     <xs:complexType name="modules">
diff --git a/audio/README b/audio/README
index abe979c..afafbe3 100644
--- a/audio/README
+++ b/audio/README
@@ -1,5 +1,8 @@
 Directory structure of the audio HIDL related code.
 
+Run `common/all-versions/copyHAL.sh` to create a new version of the audio HAL
+based on an existing one.
+
 audio
 |-- 2.0              <== core 2.0 HIDL API. .hal can not be moved into the core directory
 |                        because that would change its namespace and include path
@@ -11,13 +14,13 @@
 |   |-- 2.0          <== HIDL API of V2
 |   |-- 4.0
 |   |-- ...
-|   `-- all_versions <== code common to all version of both core and effect API
+|   `-- all-versions <== code common to all version of both core and effect API
 |       |-- default  <== implementation shared code between core and effect impl
 |       |-- test     <== utilities used by tests
 |       `-- util     <== utilities used by both implementation and tests
 |
 |-- core             <== VTS and default implementation of the core API (not HIDL, see /audio/2.0))
-|   `-- all_versions <== Code is version independent through #if and separate files
+|   `-- all-versions <== Code is version independent through #if and separate files
 |       |-- default  <== code that wraps the legacy API
 |       `-- vts      <== vts of core API
 |           |-- 2.0  <== 2.0 specific tests and helpers
@@ -28,6 +31,6 @@
     |-- 2.0
     |-- 4.0
     |-- ...
-    `-- all_versions
+    `-- all-versions
         |-- default
         `-- vts
diff --git a/audio/common/6.0/types.hal b/audio/common/6.0/types.hal
index da506d6..26e8acb 100644
--- a/audio/common/6.0/types.hal
+++ b/audio/common/6.0/types.hal
@@ -562,6 +562,8 @@
     IN_CALL          = 2,
     /** Calls handled by apps (Eg: Hangout). */
     IN_COMMUNICATION = 3,
+    /** Call screening in progress */
+    CALL_SCREEN      = 4,
 };
 
 @export(name="", value_prefix="AUDIO_DEVICE_")
@@ -738,6 +740,7 @@
     MMAP_NOIRQ   = 0x10, // input operates in MMAP no IRQ mode.
     VOIP_TX      = 0x20, // preferred input for VoIP calls.
     HW_AV_SYNC   = 0x40, // input connected to an output that uses a hardware A/V sync
+    DIRECT       = 0x80, // for acquiring encoded streams
 };
 
 @export(name="audio_usage_t", value_prefix="AUDIO_USAGE_")
@@ -758,6 +761,11 @@
     GAME                               = 14,
     VIRTUAL_SOURCE                     = 15,
     ASSISTANT                          = 16,
+    CALL_ASSISTANT                     = 17,
+    EMERGENCY                          = 1000,
+    SAFETY                             = 1001,
+    VEHICLE_STATUS                     = 1002,
+    ANNOUNCEMENT                       = 1003,
 };
 
 /** Type of audio generated by an application. */
diff --git a/audio/common/all-versions/default/service/Android.bp b/audio/common/all-versions/default/service/Android.bp
index 4565730..3e8b715 100644
--- a/audio/common/all-versions/default/service/Android.bp
+++ b/audio/common/all-versions/default/service/Android.bp
@@ -24,23 +24,6 @@
         "liblog",
         "libutils",
         "libhardware",
-        "android.hardware.audio@2.0",
-        "android.hardware.audio@4.0",
-        "android.hardware.audio@5.0",
-        "android.hardware.audio@6.0",
-        "android.hardware.audio.common@2.0",
-        "android.hardware.audio.common@4.0",
-        "android.hardware.audio.common@5.0",
-        "android.hardware.audio.common@6.0",
-        "android.hardware.audio.effect@2.0",
-        "android.hardware.audio.effect@4.0",
-        "android.hardware.audio.effect@5.0",
-        "android.hardware.audio.effect@6.0",
-        "android.hardware.bluetooth.a2dp@1.0",
-        "android.hardware.bluetooth.audio@2.0",
-        "android.hardware.soundtrigger@2.0",
-        "android.hardware.soundtrigger@2.1",
-        "android.hardware.soundtrigger@2.2",
     ],
 }
 
diff --git a/audio/common/all-versions/default/service/service.cpp b/audio/common/all-versions/default/service/service.cpp
index 2730f3b..8fa4918 100644
--- a/audio/common/all-versions/default/service/service.cpp
+++ b/audio/common/all-versions/default/service/service.cpp
@@ -16,19 +16,9 @@
 
 #define LOG_TAG "audiohalservice"
 
-#include <android/hardware/audio/2.0/IDevicesFactory.h>
-#include <android/hardware/audio/4.0/IDevicesFactory.h>
-#include <android/hardware/audio/5.0/IDevicesFactory.h>
-#include <android/hardware/audio/6.0/IDevicesFactory.h>
-#include <android/hardware/audio/effect/2.0/IEffectsFactory.h>
-#include <android/hardware/audio/effect/4.0/IEffectsFactory.h>
-#include <android/hardware/audio/effect/5.0/IEffectsFactory.h>
-#include <android/hardware/audio/effect/6.0/IEffectsFactory.h>
-#include <android/hardware/bluetooth/a2dp/1.0/IBluetoothAudioOffload.h>
-#include <android/hardware/bluetooth/audio/2.0/IBluetoothAudioProvidersFactory.h>
-#include <android/hardware/soundtrigger/2.0/ISoundTriggerHw.h>
-#include <android/hardware/soundtrigger/2.1/ISoundTriggerHw.h>
-#include <android/hardware/soundtrigger/2.2/ISoundTriggerHw.h>
+#include <string>
+#include <vector>
+
 #include <binder/ProcessState.h>
 #include <cutils/properties.h>
 #include <hidl/HidlTransportSupport.h>
@@ -38,13 +28,20 @@
 using namespace android::hardware;
 using android::OK;
 
+using InterfacesList = std::vector<std::string>;
+
 /** Try to register the provided factories in the provided order.
  *  If any registers successfully, do not register any other and return true.
  *  If all fail, return false.
  */
-template <class... Factories>
-bool registerPassthroughServiceImplementations() {
-    return ((registerPassthroughServiceImplementation<Factories>() != OK) && ...);
+template <class Iter>
+static bool registerPassthroughServiceImplementations(Iter first, Iter last) {
+    for (; first != last; ++first) {
+        if (registerPassthroughServiceImplementation(*first) == OK) {
+            return true;
+        }
+    }
+    return false;
 }
 
 int main(int /* argc */, char* /* argv */ []) {
@@ -61,36 +58,58 @@
     }
     configureRpcThreadpool(16, true /*callerWillJoin*/);
 
-    // Keep versions on a separate line for easier parsing
+    // Automatic formatting tries to compact the lines, making them less readable
     // clang-format off
-    LOG_ALWAYS_FATAL_IF((registerPassthroughServiceImplementations<
-                                audio::V6_0::IDevicesFactory,
-                                audio::V5_0::IDevicesFactory,
-                                audio::V4_0::IDevicesFactory,
-                                audio::V2_0::IDevicesFactory>()),
-                        "Could not register audio core API");
+    const std::vector<InterfacesList> mandatoryInterfaces = {
+        {
+            "Audio Core API",
+            "android.hardware.audio@6.0::IDevicesFactory",
+            "android.hardware.audio@5.0::IDevicesFactory",
+            "android.hardware.audio@4.0::IDevicesFactory",
+            "android.hardware.audio@2.0::IDevicesFactory"
+        },
+        {
+            "Audio Effect API",
+            "android.hardware.audio.effect@6.0::IEffectsFactory",
+            "android.hardware.audio.effect@5.0::IEffectsFactory",
+            "android.hardware.audio.effect@4.0::IEffectsFactory",
+            "android.hardware.audio.effect@2.0::IEffectsFactory",
+        }
+    };
 
-    LOG_ALWAYS_FATAL_IF((registerPassthroughServiceImplementations<
-                                audio::effect::V6_0::IEffectsFactory,
-                                audio::effect::V5_0::IEffectsFactory,
-                                audio::effect::V4_0::IEffectsFactory,
-                                audio::effect::V2_0::IEffectsFactory>()),
-                        "Could not register audio effect API");
+    const std::vector<InterfacesList> optionalInterfaces = {
+        {
+            "Soundtrigger API",
+            "android.hardware.soundtrigger@2.3::ISoundTriggerHw",
+            "android.hardware.soundtrigger@2.2::ISoundTriggerHw",
+            "android.hardware.soundtrigger@2.1::ISoundTriggerHw",
+            "android.hardware.soundtrigger@2.0::ISoundTriggerHw",
+        },
+        {
+            "Bluetooth Audio API",
+            "android.hardware.bluetooth.audio@2.0::IBluetoothAudioProvidersFactory"
+        },
+        // remove the old HIDL when Bluetooth Audio Hal V2 has offloading supported
+        {
+            "Bluetooth Audio Offload API",
+            "android.hardware.a2dp@1.0::IBluetoothAudioOffload"
+        }
+    };
     // clang-format on
 
-    ALOGW_IF((registerPassthroughServiceImplementations<soundtrigger::V2_2::ISoundTriggerHw,
-                                                        soundtrigger::V2_1::ISoundTriggerHw,
-                                                        soundtrigger::V2_0::ISoundTriggerHw>()),
-             "Could not register soundtrigger API");
+    for (const auto& listIter : mandatoryInterfaces) {
+        auto iter = listIter.begin();
+        const std::string& interfaceFamilyName = *iter++;
+        LOG_ALWAYS_FATAL_IF(!registerPassthroughServiceImplementations(iter, listIter.end()),
+                            "Could not register %s", interfaceFamilyName.c_str());
+    }
 
-    ALOGW_IF(registerPassthroughServiceImplementations<
-                     bluetooth::audio::V2_0::IBluetoothAudioProvidersFactory>(),
-             "Could not register Bluetooth audio API");
-
-    // remove the old HIDL when Bluetooth Audio Hal V2 has offloading supported
-    ALOGW_IF(registerPassthroughServiceImplementations<
-                     bluetooth::a2dp::V1_0::IBluetoothAudioOffload>(),
-             "Could not register Bluetooth audio offload API");
+    for (const auto& listIter : optionalInterfaces) {
+        auto iter = listIter.begin();
+        const std::string& interfaceFamilyName = *iter++;
+        ALOGW_IF(!registerPassthroughServiceImplementations(iter, listIter.end()),
+                 "Could not register %s", interfaceFamilyName.c_str());
+    }
 
     joinRpcThreadpool();
 }
diff --git a/audio/core/all-versions/default/Android.bp b/audio/core/all-versions/default/Android.bp
index 6f18d1d..b8b7fee 100644
--- a/audio/core/all-versions/default/Android.bp
+++ b/audio/core/all-versions/default/Android.bp
@@ -26,6 +26,7 @@
         "libhardware",
         "libhidlbase",
         "liblog",
+        "libmedia_helper",
         "libutils",
         "android.hardware.audio.common-util",
     ],
@@ -37,10 +38,6 @@
         "libhardware_headers",
         "libmedia_headers",
     ],
-
-    whole_static_libs: [
-        "libmedia_helper",
-    ],
 }
 
 cc_library_shared {
diff --git a/audio/core/all-versions/default/Device.cpp b/audio/core/all-versions/default/Device.cpp
index ad841ca..47e31c1 100644
--- a/audio/core/all-versions/default/Device.cpp
+++ b/audio/core/all-versions/default/Device.cpp
@@ -269,12 +269,21 @@
 Return<void> Device::createAudioPatch(const hidl_vec<AudioPortConfig>& sources,
                                       const hidl_vec<AudioPortConfig>& sinks,
                                       createAudioPatch_cb _hidl_cb) {
+    auto [retval, patch] = createOrUpdateAudioPatch(
+            static_cast<AudioPatchHandle>(AudioHandleConsts::AUDIO_PATCH_HANDLE_NONE), sources,
+            sinks);
+    _hidl_cb(retval, patch);
+    return Void();
+}
+
+std::tuple<Result, AudioPatchHandle> Device::createOrUpdateAudioPatch(
+        AudioPatchHandle patch, const hidl_vec<AudioPortConfig>& sources,
+        const hidl_vec<AudioPortConfig>& sinks) {
     Result retval(Result::NOT_SUPPORTED);
-    AudioPatchHandle patch = 0;
     if (version() >= AUDIO_DEVICE_API_VERSION_3_0) {
         std::unique_ptr<audio_port_config[]> halSources(HidlUtils::audioPortConfigsToHal(sources));
         std::unique_ptr<audio_port_config[]> halSinks(HidlUtils::audioPortConfigsToHal(sinks));
-        audio_patch_handle_t halPatch = AUDIO_PATCH_HANDLE_NONE;
+        audio_patch_handle_t halPatch = static_cast<audio_patch_handle_t>(patch);
         retval = analyzeStatus("create_audio_patch",
                                mDevice->create_audio_patch(mDevice, sources.size(), &halSources[0],
                                                            sinks.size(), &halSinks[0], &halPatch));
@@ -282,8 +291,7 @@
             patch = static_cast<AudioPatchHandle>(halPatch);
         }
     }
-    _hidl_cb(retval, patch);
-    return Void();
+    return {retval, patch};
 }
 
 Return<Result> Device::releaseAudioPatch(int32_t patch) {
@@ -438,6 +446,19 @@
     }
 }
 
+Return<void> Device::updateAudioPatch(int32_t previousPatch,
+                                      const hidl_vec<AudioPortConfig>& sources,
+                                      const hidl_vec<AudioPortConfig>& sinks,
+                                      createAudioPatch_cb _hidl_cb) {
+    if (previousPatch != static_cast<int32_t>(AudioHandleConsts::AUDIO_PATCH_HANDLE_NONE)) {
+        auto [retval, patch] = createOrUpdateAudioPatch(previousPatch, sources, sinks);
+        _hidl_cb(retval, patch);
+    } else {
+        _hidl_cb(Result::INVALID_ARGUMENTS, previousPatch);
+    }
+    return Void();
+}
+
 #endif
 
 }  // namespace implementation
diff --git a/audio/core/all-versions/default/PrimaryDevice.cpp b/audio/core/all-versions/default/PrimaryDevice.cpp
index 0f1aba0..11c1c5a 100644
--- a/audio/core/all-versions/default/PrimaryDevice.cpp
+++ b/audio/core/all-versions/default/PrimaryDevice.cpp
@@ -176,6 +176,13 @@
 Return<Result> PrimaryDevice::removeDeviceEffect(AudioPortHandle device, uint64_t effectId) {
     return mDevice->removeDeviceEffect(device, effectId);
 }
+
+Return<void> PrimaryDevice::updateAudioPatch(int32_t previousPatch,
+                                             const hidl_vec<AudioPortConfig>& sources,
+                                             const hidl_vec<AudioPortConfig>& sinks,
+                                             updateAudioPatch_cb _hidl_cb) {
+    return mDevice->updateAudioPatch(previousPatch, sources, sinks, _hidl_cb);
+}
 #endif
 
 // Methods from ::android::hardware::audio::CPP_VERSION::IPrimaryDevice follow.
@@ -196,6 +203,9 @@
         case AudioMode::RINGTONE:
         case AudioMode::IN_CALL:
         case AudioMode::IN_COMMUNICATION:
+#if MAJOR_VERSION >= 6
+        case AudioMode::CALL_SCREEN:
+#endif
             break;  // Valid values
         default:
             return Result::INVALID_ARGUMENTS;
diff --git a/audio/core/all-versions/default/include/core/default/Device.h b/audio/core/all-versions/default/include/core/default/Device.h
index 80a9638..b0e72d9 100644
--- a/audio/core/all-versions/default/include/core/default/Device.h
+++ b/audio/core/all-versions/default/include/core/default/Device.h
@@ -118,6 +118,9 @@
     Return<Result> close() override;
     Return<Result> addDeviceEffect(AudioPortHandle device, uint64_t effectId) override;
     Return<Result> removeDeviceEffect(AudioPortHandle device, uint64_t effectId) override;
+    Return<void> updateAudioPatch(int32_t previousPatch, const hidl_vec<AudioPortConfig>& sources,
+                                  const hidl_vec<AudioPortConfig>& sinks,
+                                  createAudioPatch_cb _hidl_cb) override;
 #endif
     Return<void> debug(const hidl_handle& fd, const hidl_vec<hidl_string>& options) override;
 
@@ -136,6 +139,9 @@
     virtual ~Device();
 
     Result doClose();
+    std::tuple<Result, AudioPatchHandle> createOrUpdateAudioPatch(
+            AudioPatchHandle patch, const hidl_vec<AudioPortConfig>& sources,
+            const hidl_vec<AudioPortConfig>& sinks);
 
     // Methods from ParametersUtil.
     char* halGetParameters(const char* keys) override;
diff --git a/audio/core/all-versions/default/include/core/default/PrimaryDevice.h b/audio/core/all-versions/default/include/core/default/PrimaryDevice.h
index 9fc90c3..ccdb7b2 100644
--- a/audio/core/all-versions/default/include/core/default/PrimaryDevice.h
+++ b/audio/core/all-versions/default/include/core/default/PrimaryDevice.h
@@ -100,6 +100,9 @@
     Return<Result> close() override;
     Return<Result> addDeviceEffect(AudioPortHandle device, uint64_t effectId) override;
     Return<Result> removeDeviceEffect(AudioPortHandle device, uint64_t effectId) override;
+    Return<void> updateAudioPatch(int32_t previousPatch, const hidl_vec<AudioPortConfig>& sources,
+                                  const hidl_vec<AudioPortConfig>& sinks,
+                                  updateAudioPatch_cb _hidl_cb) override;
 #endif
 
     Return<void> debug(const hidl_handle& fd, const hidl_vec<hidl_string>& options) override;
diff --git a/audio/core/all-versions/default/include/core/default/Stream.h b/audio/core/all-versions/default/include/core/default/Stream.h
index 91df0c7..ce0003b 100644
--- a/audio/core/all-versions/default/include/core/default/Stream.h
+++ b/audio/core/all-versions/default/include/core/default/Stream.h
@@ -157,6 +157,10 @@
     native_handle_t* hidlHandle = nullptr;
 
     if (mStream->create_mmap_buffer != NULL) {
+        if (minSizeFrames <= 0) {
+            retval = Result::INVALID_ARGUMENTS;
+            goto exit;
+        }
         struct audio_mmap_buffer_info halInfo;
         retval = Stream::analyzeStatus(
             "create_mmap_buffer", mStream->create_mmap_buffer(mStream, minSizeFrames, &halInfo));
@@ -184,6 +188,7 @@
             info.burstSizeFrames = halInfo.burst_size_frames;
         }
     }
+exit:
     _hidl_cb(retval, info);
     if (hidlHandle != nullptr) {
         native_handle_delete(hidlHandle);
diff --git a/audio/core/all-versions/vts/functional/4.0/AudioPrimaryHidlHalTest.cpp b/audio/core/all-versions/vts/functional/4.0/AudioPrimaryHidlHalTest.cpp
index 709b7cd..b0eb2e0 100644
--- a/audio/core/all-versions/vts/functional/4.0/AudioPrimaryHidlHalTest.cpp
+++ b/audio/core/all-versions/vts/functional/4.0/AudioPrimaryHidlHalTest.cpp
@@ -244,7 +244,13 @@
 TEST_P(AudioPrimaryHidlTest, setMode) {
     doc::test("Make sure setMode always succeeds if mode is valid and fails otherwise");
     // Test Invalid values
-    for (int mode : {-2, -1, int(AudioMode::IN_COMMUNICATION) + 1}) {
+#if MAJOR_VERSION >= 6
+    int maxMode = int(AudioMode::CALL_SCREEN);
+#else
+    int maxMode = int(AudioMode::IN_COMMUNICATION);
+#endif
+
+    for (int mode : {-2, -1, maxMode + 1}) {
         ASSERT_RESULT(Result::INVALID_ARGUMENTS, getDevice()->setMode(AudioMode(mode)))
                 << "mode=" << mode;
     }
@@ -253,6 +259,10 @@
                            AudioMode::NORMAL /* Make sure to leave the test in normal mode */}) {
         ASSERT_OK(getDevice()->setMode(mode)) << "mode=" << toString(mode);
     }
+    // AudioMode::CALL_SCREEN as support is optional
+#if MAJOR_VERSION >= 6
+    ASSERT_RESULT(okOrNotSupportedOrInvalidArgs, getDevice()->setMode(AudioMode::CALL_SCREEN));
+#endif
 }
 
 TEST_P(AudioPrimaryHidlTest, setBtHfpSampleRate) {
diff --git a/audio/core/all-versions/vts/functional/6.0/AudioPrimaryHidlHalTest.cpp b/audio/core/all-versions/vts/functional/6.0/AudioPrimaryHidlHalTest.cpp
index 2afbbb8..09ef330 100644
--- a/audio/core/all-versions/vts/functional/6.0/AudioPrimaryHidlHalTest.cpp
+++ b/audio/core/all-versions/vts/functional/6.0/AudioPrimaryHidlHalTest.cpp
@@ -181,3 +181,12 @@
     ASSERT_OK(getDevice()->close());
     ASSERT_TRUE(resetDevice());
 }
+
+TEST_P(AudioPatchHidlTest, UpdatePatchInvalidHandle) {
+    doc::test("Verify that passing an invalid handle to updateAudioPatch is checked");
+    AudioPatchHandle ignored;
+    ASSERT_OK(getDevice()->updateAudioPatch(
+            static_cast<int32_t>(AudioHandleConsts::AUDIO_PATCH_HANDLE_NONE),
+            hidl_vec<AudioPortConfig>(), hidl_vec<AudioPortConfig>(), returnIn(res, ignored)));
+    ASSERT_RESULT(Result::INVALID_ARGUMENTS, res);
+}
diff --git a/audio/core/all-versions/vts/functional/Android.bp b/audio/core/all-versions/vts/functional/Android.bp
index d3545c8..715f376 100644
--- a/audio/core/all-versions/vts/functional/Android.bp
+++ b/audio/core/all-versions/vts/functional/Android.bp
@@ -19,12 +19,13 @@
     defaults: ["VtsHalTargetTestDefaults"],
     static_libs: [
         "android.hardware.audio.common.test.utility",
+        "libaudiofoundation",
         "libaudiopolicycomponents",
         "libmedia_helper",
         "libxml2",
     ],
     shared_libs: [
-        "libaudiofoundation",
+        "libbinder",
         "libfmq",
     ],
     header_libs: [
diff --git a/audio/effect/all-versions/default/Effect.cpp b/audio/effect/all-versions/default/Effect.cpp
index 33ec996..406a571 100644
--- a/audio/effect/all-versions/default/Effect.cpp
+++ b/audio/effect/all-versions/default/Effect.cpp
@@ -307,12 +307,11 @@
 Result Effect::getCurrentConfigImpl(uint32_t featureId, uint32_t configSize,
                                     GetCurrentConfigSuccessCallback onSuccess) {
     uint32_t halCmd = featureId;
-    uint32_t halResult[alignedSizeIn<uint32_t>(sizeof(uint32_t) + configSize)];
-    memset(halResult, 0, sizeof(halResult));
+    std::vector<uint32_t> halResult(alignedSizeIn<uint32_t>(sizeof(uint32_t) + configSize), 0);
     uint32_t halResultSize = 0;
-    return sendCommandReturningStatusAndData(EFFECT_CMD_GET_FEATURE_CONFIG, "GET_FEATURE_CONFIG",
-                                             sizeof(uint32_t), &halCmd, &halResultSize, halResult,
-                                             sizeof(uint32_t), [&] { onSuccess(&halResult[1]); });
+    return sendCommandReturningStatusAndData(
+            EFFECT_CMD_GET_FEATURE_CONFIG, "GET_FEATURE_CONFIG", sizeof(uint32_t), &halCmd,
+            &halResultSize, &halResult[0], sizeof(uint32_t), [&] { onSuccess(&halResult[1]); });
 }
 
 Result Effect::getParameterImpl(uint32_t paramSize, const void* paramData,
@@ -339,8 +338,7 @@
                                        GetSupportedConfigsSuccessCallback onSuccess) {
     uint32_t halCmd[2] = {featureId, maxConfigs};
     uint32_t halResultSize = 2 * sizeof(uint32_t) + maxConfigs * sizeof(configSize);
-    uint8_t halResult[halResultSize];
-    memset(&halResult[0], 0, halResultSize);
+    std::vector<uint8_t> halResult(static_cast<size_t>(halResultSize), 0);
     return sendCommandReturningStatusAndData(
         EFFECT_CMD_GET_FEATURE_SUPPORTED_CONFIGS, "GET_FEATURE_SUPPORTED_CONFIGS", sizeof(halCmd),
         halCmd, &halResultSize, &halResult[0], 2 * sizeof(uint32_t), [&] {
@@ -519,9 +517,9 @@
     uint32_t halDataSize;
     std::unique_ptr<uint8_t[]> halData = hidlVecToHal(volumes, &halDataSize);
     uint32_t halResultSize = halDataSize;
-    uint32_t halResult[volumes.size()];
+    std::vector<uint32_t> halResult(volumes.size(), 0);
     Result retval = sendCommandReturningData(EFFECT_CMD_SET_VOLUME, "SET_VOLUME", halDataSize,
-                                             &halData[0], &halResultSize, halResult);
+                                             &halData[0], &halResultSize, &halResult[0]);
     hidl_vec<uint32_t> result;
     if (retval == Result::OK) {
         result.setToExternal(&halResult[0], halResultSize);
@@ -581,8 +579,6 @@
 }
 
 Return<void> Effect::getAuxChannelsConfig(getAuxChannelsConfig_cb _hidl_cb) {
-    uint32_t halResult[alignedSizeIn<uint32_t>(sizeof(uint32_t) + sizeof(channel_config_t))];
-    memset(halResult, 0, sizeof(halResult));
     EffectAuxChannelsConfig result;
     Result retval = getCurrentConfigImpl(
         EFFECT_FEATURE_AUX_CHANNELS, sizeof(channel_config_t), [&](void* configData) {
@@ -594,11 +590,12 @@
 }
 
 Return<Result> Effect::setAuxChannelsConfig(const EffectAuxChannelsConfig& config) {
-    uint32_t halCmd[alignedSizeIn<uint32_t>(sizeof(uint32_t) + sizeof(channel_config_t))];
+    std::vector<uint32_t> halCmd(
+            alignedSizeIn<uint32_t>(sizeof(uint32_t) + sizeof(channel_config_t)), 0);
     halCmd[0] = EFFECT_FEATURE_AUX_CHANNELS;
     effectAuxChannelsConfigToHal(config, reinterpret_cast<channel_config_t*>(&halCmd[1]));
     return sendCommandReturningStatus(EFFECT_CMD_SET_FEATURE_CONFIG,
-                                      "SET_FEATURE_CONFIG AUX_CHANNELS", sizeof(halCmd), halCmd);
+                                      "SET_FEATURE_CONFIG AUX_CHANNELS", halCmd.size(), &halCmd[0]);
 }
 
 Return<Result> Effect::setAudioSource(AudioSource source) {
@@ -692,12 +689,11 @@
 
 Return<Result> Effect::setCurrentConfigForFeature(uint32_t featureId,
                                                   const hidl_vec<uint8_t>& configData) {
-    uint32_t halCmd[alignedSizeIn<uint32_t>(sizeof(uint32_t) + configData.size())];
-    memset(halCmd, 0, sizeof(halCmd));
+    std::vector<uint32_t> halCmd(alignedSizeIn<uint32_t>(sizeof(uint32_t) + configData.size()), 0);
     halCmd[0] = featureId;
     memcpy(&halCmd[1], &configData[0], configData.size());
     return sendCommandReturningStatus(EFFECT_CMD_SET_FEATURE_CONFIG, "SET_FEATURE_CONFIG",
-                                      sizeof(halCmd), halCmd);
+                                      halCmd.size(), &halCmd[0]);
 }
 
 Return<Result> Effect::close() {
diff --git a/audio/policy/1.0/xml/api/current.txt b/audio/policy/1.0/xml/api/current.txt
index ccbc828..29a9cd4 100644
--- a/audio/policy/1.0/xml/api/current.txt
+++ b/audio/policy/1.0/xml/api/current.txt
@@ -129,6 +129,7 @@
     enum_constant public static final audio.policy.V1_0.FlagType AUDIO_FLAG_BEACON;
     enum_constant public static final audio.policy.V1_0.FlagType AUDIO_FLAG_BYPASS_INTERRUPTION_POLICY;
     enum_constant public static final audio.policy.V1_0.FlagType AUDIO_FLAG_BYPASS_MUTE;
+    enum_constant public static final audio.policy.V1_0.FlagType AUDIO_FLAG_CAPTURE_PRIVATE;
     enum_constant public static final audio.policy.V1_0.FlagType AUDIO_FLAG_DEEP_BUFFER;
     enum_constant public static final audio.policy.V1_0.FlagType AUDIO_FLAG_HW_AV_SYNC;
     enum_constant public static final audio.policy.V1_0.FlagType AUDIO_FLAG_HW_HOTWORD;
@@ -212,6 +213,7 @@
     enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_ASSISTANCE_NAVIGATION_GUIDANCE;
     enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_ASSISTANCE_SONIFICATION;
     enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_ASSISTANT;
+    enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_CALL_ASSISTANT;
     enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_GAME;
     enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_MEDIA;
     enum_constant public static final audio.policy.V1_0.UsageEnumType AUDIO_USAGE_NOTIFICATION;
diff --git a/audio/policy/1.0/xml/audio_policy_engine_configuration.xsd b/audio/policy/1.0/xml/audio_policy_engine_configuration.xsd
index a23d9a8..842e724 100644
--- a/audio/policy/1.0/xml/audio_policy_engine_configuration.xsd
+++ b/audio/policy/1.0/xml/audio_policy_engine_configuration.xsd
@@ -342,6 +342,7 @@
             <xs:enumeration value="AUDIO_USAGE_GAME"/>
             <xs:enumeration value="AUDIO_USAGE_VIRTUAL_SOURCE"/>
             <xs:enumeration value="AUDIO_USAGE_ASSISTANT"/>
+            <xs:enumeration value="AUDIO_USAGE_CALL_ASSISTANT"/>
         </xs:restriction>
     </xs:simpleType>
 
@@ -370,6 +371,7 @@
             <xs:enumeration value="AUDIO_FLAG_NO_MEDIA_PROJECTION"/>
             <xs:enumeration value="AUDIO_FLAG_MUTE_HAPTIC"/>
             <xs:enumeration value="AUDIO_FLAG_NO_SYSTEM_CAPTURE"/>
+            <xs:enumeration value="AUDIO_FLAG_CAPTURE_PRIVATE"/>
         </xs:restriction>
     </xs:simpleType>
 
diff --git a/automotive/OWNERS b/automotive/OWNERS
index 3cf4489..83ee63c 100644
--- a/automotive/OWNERS
+++ b/automotive/OWNERS
@@ -1,4 +1,5 @@
-randolphs@google.com
 pirozzoj@google.com
 twasilczyk@google.com
 pfg@google.com
+gurunagarajan@google.com
+keunyoung@google.com
diff --git a/automotive/audiocontrol/1.0/IAudioControl.hal b/automotive/audiocontrol/1.0/IAudioControl.hal
index 3c8b086..2e7ef75 100644
--- a/automotive/audiocontrol/1.0/IAudioControl.hal
+++ b/automotive/audiocontrol/1.0/IAudioControl.hal
@@ -29,6 +29,11 @@
      *
      * For every context, a valid bus number (0 - num busses-1) must be returned. If an
      * unrecognized contextNumber is encountered, then -1 shall be returned.
+     *
+     * Deprecated: usage of this API and car_volume_groups.xml has been replaced with
+     * car_audio_configuration.xml. If using car_audio_configuration.xml, then the framework
+     * will not call this method. If it doesn't, then it will load car_volume_groups.xml and
+     * call this method.
      */
     getBusForContext(ContextNumber contextNumber)
         generates (int32_t busNumber);
diff --git a/automotive/audiocontrol/1.0/default/Android.bp b/automotive/audiocontrol/1.0/default/Android.bp
index 314830b..ae4b805 100644
--- a/automotive/audiocontrol/1.0/default/Android.bp
+++ b/automotive/audiocontrol/1.0/default/Android.bp
@@ -29,10 +29,5 @@
         "liblog",
         "libutils",
     ],
-
-    cflags: [
-        "-DLOG_TAG=\"AudCntrlDrv\"",
-        "-O0",
-        "-g",
-    ],
+    vintf_fragments: ["audiocontrol_manifest.xml"],
 }
diff --git a/automotive/audiocontrol/1.0/default/audiocontrol_manifest.xml b/automotive/audiocontrol/1.0/default/audiocontrol_manifest.xml
new file mode 100644
index 0000000..0981eb7
--- /dev/null
+++ b/automotive/audiocontrol/1.0/default/audiocontrol_manifest.xml
@@ -0,0 +1,11 @@
+<manifest version="1.0" type="device">
+    <hal format="hidl">
+        <name>android.hardware.automotive.audiocontrol</name>
+        <transport>hwbinder</transport>
+        <version>1.0</version>
+        <interface>
+            <name>IAudioControl</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+</manifest>
\ No newline at end of file
diff --git a/automotive/audiocontrol/2.0/Android.bp b/automotive/audiocontrol/2.0/Android.bp
new file mode 100644
index 0000000..2a9f849
--- /dev/null
+++ b/automotive/audiocontrol/2.0/Android.bp
@@ -0,0 +1,20 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.automotive.audiocontrol@2.0",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "types.hal",
+        "IAudioControl.hal",
+        "ICloseHandle.hal",
+        "IFocusListener.hal",
+    ],
+    interfaces: [
+        "android.hidl.base@1.0",
+        "android.hardware.audio.common@6.0",
+    ],
+    gen_java: true,
+}
diff --git a/automotive/audiocontrol/2.0/IAudioControl.hal b/automotive/audiocontrol/2.0/IAudioControl.hal
new file mode 100644
index 0000000..1073498
--- /dev/null
+++ b/automotive/audiocontrol/2.0/IAudioControl.hal
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.audiocontrol@2.0;
+
+import ICloseHandle;
+import IFocusListener;
+import android.hardware.audio.common@6.0::AudioUsage;
+
+/**
+ * Interacts with the car's audio subsystem to manage audio sources and volumes
+ */
+interface IAudioControl {
+    /**
+     * Registers focus listener to be used by HAL for requesting and abandoning audio focus.
+     *
+     * It is expected that there will only ever be a single focus listener registered. If the
+     * observer dies, the HAL implementation must unregister observer automatically. If called when
+     * a listener is already registered, the existing one should be unregistered and replaced with
+     * the new listener.
+     *
+     * @param listener the listener interface
+     * @return closeHandle A handle to unregister observer.
+     */
+    registerFocusListener(IFocusListener listener) generates (ICloseHandle closeHandle);
+
+    /**
+     * Notifies HAL of changes in audio focus status for focuses requested or abandoned by the HAL.
+     *
+     * This will be called in response to IFocusListener's requestAudioFocus and
+     * abandonAudioFocus, as well as part of any change in focus being held by the HAL due focus
+     * request from other activities or services.
+     *
+     * The HAL is not required to wait for an callback of AUDIOFOCUS_GAIN before playing audio, nor
+     * is it required to stop playing audio in the event of a AUDIOFOCUS_LOSS callback is received.
+     *
+     * @param usage The audio usage associated with the focus change {@code AttributeUsage}
+     * @param zoneId The identifier for the audio zone that the HAL is playing the stream in
+     * @param focusChange the AudioFocusChange that has occurred
+     */
+    oneway onAudioFocusChange(bitfield<AudioUsage> usage, int32_t zoneId,
+        bitfield<AudioFocusChange> focusChange);
+
+    /**
+     * Control the right/left balance setting of the car speakers.
+     *
+     * This is intended to shift the speaker volume toward the right (+) or left (-) side of
+     * the car. 0.0 means "centered". +1.0 means fully right. -1.0 means fully left.
+     *
+     * A value outside the range -1 to 1 must be clamped by the implementation to the -1 to 1
+     * range.
+     */
+    oneway setBalanceTowardRight(float value);
+
+    /**
+     * Control the fore/aft fade setting of the car speakers.
+     *
+     * This is intended to shift the speaker volume toward the front (+) or back (-) of the car.
+     * 0.0 means "centered". +1.0 means fully forward. -1.0 means fully rearward.
+     *
+     * A value outside the range -1 to 1 must be clamped by the implementation to the -1 to 1
+     * range.
+     */
+    oneway setFadeTowardFront(float value);
+};
diff --git a/automotive/audiocontrol/2.0/ICloseHandle.hal b/automotive/audiocontrol/2.0/ICloseHandle.hal
new file mode 100644
index 0000000..537af6d
--- /dev/null
+++ b/automotive/audiocontrol/2.0/ICloseHandle.hal
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.audiocontrol@2.0;
+
+/**
+ * Represents a generic close handle to remove a callback that doesn't need
+ * active interface.
+ *
+ * When close() is called OR when the interface is released, the underlying
+ * resources must be freed.
+ */
+interface ICloseHandle {
+    /**
+     * Closes the handle.
+     *
+     * The call must not fail and must be issued by the client at most once.
+     * Otherwise, the server must ignore subsequent calls.
+     */
+    close();
+};
diff --git a/automotive/audiocontrol/2.0/IFocusListener.hal b/automotive/audiocontrol/2.0/IFocusListener.hal
new file mode 100644
index 0000000..4fd5ef0
--- /dev/null
+++ b/automotive/audiocontrol/2.0/IFocusListener.hal
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.audiocontrol@2.0;
+
+import android.hardware.audio.common@6.0::AudioUsage;
+
+/**
+ * Callback interface for audio focus listener.
+ *
+ * For typical configuration, the listener the car audio service.
+ */
+interface IFocusListener {
+    /**
+     * Called whenever HAL is requesting focus as it is starting to play audio of a given usage in a
+     * specified zone.
+     *
+     * In response, IAudioControl#onAudioFocusChange will be called with focusChange status. This
+     * interaction is oneway to avoid blocking HAL so that it is not required to wait for a response
+     * before playing audio.
+     *
+     * @param usage The audio usage associated with the focus request {@code AttributeUsage}
+     * @param zoneId The identifier for the audio zone where the HAL is requesting focus
+     * @param focusGain The AudioFocusChange associated with this request. Should be one of the
+     * following: GAIN, GAIN_TRANSIENT, GAIN_TRANSIENT_MAY_DUCK, GAIN_TRANSIENT_EXCLUSIVE.
+     */
+    oneway requestAudioFocus(bitfield<AudioUsage> usage, int32_t zoneId,
+        bitfield<AudioFocusChange> focusGain);
+
+    /**
+     * Called whenever HAL is abandoning focus as it is finished playing audio of a given usage in a
+     * specific zone.
+     *
+     * In response, IAudioControl#onAudioFocusChange will be called with focusChange status. This
+     * interaction is oneway to avoid blocking HAL so that it is not required to wait for a response
+     * before stopping audio playback.
+     *
+     * @param usage The audio usage for which the HAL is abandoning focus {@code AttributeUsage}
+     * @param zoneId The identifier for the audio zone that the HAL abandoning focus
+     */
+    oneway abandonAudioFocus(bitfield<AudioUsage> usage, int32_t zoneId);
+};
diff --git a/automotive/audiocontrol/2.0/default/Android.bp b/automotive/audiocontrol/2.0/default/Android.bp
new file mode 100644
index 0000000..44ad028
--- /dev/null
+++ b/automotive/audiocontrol/2.0/default/Android.bp
@@ -0,0 +1,39 @@
+// Copyright (C) 2020 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//       http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+cc_binary {
+    name: "android.hardware.automotive.audiocontrol@2.0-service",
+    defaults: ["hidl_defaults"],
+    vendor: true,
+    relative_install_path: "hw",
+    srcs: [
+        "AudioControl.cpp",
+        "service.cpp",
+        "CloseHandle.cpp",
+    ],
+    init_rc: ["android.hardware.automotive.audiocontrol@2.0-service.rc"],
+
+    shared_libs: [
+        "android.hardware.automotive.audiocontrol@2.0",
+        "libbase",
+        "libhidlbase",
+        "liblog",
+        "libutils",
+    ],
+    vintf_fragments: ["audiocontrol2_manifest.xml"],
+    cflags: [
+        "-O0",
+        "-g",
+    ],
+}
diff --git a/automotive/audiocontrol/2.0/default/AudioControl.cpp b/automotive/audiocontrol/2.0/default/AudioControl.cpp
new file mode 100644
index 0000000..6505e34
--- /dev/null
+++ b/automotive/audiocontrol/2.0/default/AudioControl.cpp
@@ -0,0 +1,60 @@
+#include "AudioControl.h"
+
+#include <android-base/logging.h>
+#include <hidl/HidlTransportSupport.h>
+
+#include "CloseHandle.h"
+
+namespace android::hardware::automotive::audiocontrol::V2_0::implementation {
+
+AudioControl::AudioControl() {}
+
+Return<sp<ICloseHandle>> AudioControl::registerFocusListener(const sp<IFocusListener>& listener) {
+    LOG(DEBUG) << "registering focus listener";
+    sp<ICloseHandle> closeHandle(nullptr);
+
+    if (listener) {
+        mFocusListener = listener;
+
+        closeHandle = new CloseHandle([this, listener]() {
+            if (mFocusListener == listener) {
+                mFocusListener = nullptr;
+            }
+        });
+    } else {
+        LOG(ERROR) << "Unexpected nullptr for listener resulting in no-op.";
+    }
+
+    return closeHandle;
+}
+
+Return<void> AudioControl::setBalanceTowardRight(float value) {
+    // For completeness, lets bounds check the input...
+    if (isValidValue(value)) {
+        LOG(ERROR) << "Balance value out of range -1 to 1 at " << value;
+    } else {
+        // Just log in this default mock implementation
+        LOG(INFO) << "Balance set to " << value;
+    }
+    return Void();
+}
+
+Return<void> AudioControl::setFadeTowardFront(float value) {
+    // For completeness, lets bounds check the input...
+    if (isValidValue(value)) {
+        LOG(ERROR) << "Fader value out of range -1 to 1 at " << value;
+    } else {
+        // Just log in this default mock implementation
+        LOG(INFO) << "Fader set to " << value;
+    }
+    return Void();
+}
+
+Return<void> AudioControl::onAudioFocusChange(hidl_bitfield<AudioUsage> usage, int zoneId,
+                                              hidl_bitfield<AudioFocusChange> focusChange) {
+    LOG(INFO) << "Focus changed: " << static_cast<int>(focusChange) << " for usage "
+              << static_cast<int>(usage) << " in zone " << zoneId;
+    return Void();
+}
+
+}  // namespace android::hardware::automotive::audiocontrol::V2_0::implementation
diff --git a/automotive/audiocontrol/2.0/default/AudioControl.h b/automotive/audiocontrol/2.0/default/AudioControl.h
new file mode 100644
index 0000000..475a693
--- /dev/null
+++ b/automotive/audiocontrol/2.0/default/AudioControl.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_AUTOMOTIVE_AUDIOCONTROL_V2_0_AUDIOCONTROL_H
+#define ANDROID_HARDWARE_AUTOMOTIVE_AUDIOCONTROL_V2_0_AUDIOCONTROL_H
+
+#include <android/hardware/audio/common/6.0/types.h>
+#include <android/hardware/automotive/audiocontrol/2.0/IAudioControl.h>
+#include <android/hardware/automotive/audiocontrol/2.0/ICloseHandle.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+
+using android::hardware::audio::common::V6_0::AudioUsage;
+
+namespace android::hardware::automotive::audiocontrol::V2_0::implementation {
+
+class AudioControl : public IAudioControl {
+  public:
+    // Methods from ::android::hardware::automotive::audiocontrol::V2_0::IAudioControl follow.
+    Return<sp<ICloseHandle>> registerFocusListener(const sp<IFocusListener>& listener);
+    Return<void> onAudioFocusChange(hidl_bitfield<AudioUsage> usage, int zoneId,
+                                    hidl_bitfield<AudioFocusChange> focusChange);
+    Return<void> setBalanceTowardRight(float value) override;
+    Return<void> setFadeTowardFront(float value) override;
+
+    // Implementation details
+    AudioControl();
+
+  private:
+    sp<IFocusListener> mFocusListener;
+    static bool isValidValue(float value) { return (value > 1.0f) || (value < -1.0f); }
+};
+
+}  // namespace android::hardware::automotive::audiocontrol::V2_0::implementation
+
+#endif  // ANDROID_HARDWARE_AUTOMOTIVE_AUDIOCONTROL_V2_0_AUDIOCONTROL_H
diff --git a/automotive/audiocontrol/2.0/default/CloseHandle.cpp b/automotive/audiocontrol/2.0/default/CloseHandle.cpp
new file mode 100644
index 0000000..bc47931
--- /dev/null
+++ b/automotive/audiocontrol/2.0/default/CloseHandle.cpp
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "CloseHandle.h"
+
+namespace android::hardware::automotive::audiocontrol::V2_0::implementation {
+
+CloseHandle::CloseHandle(Callback callback) : mCallback(callback) {}
+
+CloseHandle::~CloseHandle() {
+    close();
+}
+
+Return<void> CloseHandle::close() {
+    const auto wasClosed = mIsClosed.exchange(true);
+    if (wasClosed) return {};
+
+    if (mCallback) mCallback();
+    return {};
+}
+
+}  // namespace android::hardware::automotive::audiocontrol::V2_0::implementation
diff --git a/automotive/audiocontrol/2.0/default/CloseHandle.h b/automotive/audiocontrol/2.0/default/CloseHandle.h
new file mode 100644
index 0000000..6caf0bf
--- /dev/null
+++ b/automotive/audiocontrol/2.0/default/CloseHandle.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android-base/macros.h>
+#include <android/hardware/automotive/audiocontrol/2.0/ICloseHandle.h>
+
+namespace android::hardware::automotive::audiocontrol::V2_0::implementation {
+
+/** Generic ICloseHandle implementation ignoring double-close events. */
+class CloseHandle : public ICloseHandle {
+  public:
+    using Callback = std::function<void()>;
+
+    /**
+     * Create a handle with a callback.
+     *
+     * The callback is guaranteed to be called exactly once.
+     *
+     * \param callback Called on the first close() call, or on destruction of the handle
+     */
+    CloseHandle(Callback callback = nullptr);
+    virtual ~CloseHandle();
+
+    Return<void> close() override;
+
+  private:
+    const Callback mCallback;
+    std::atomic<bool> mIsClosed = false;
+
+    DISALLOW_COPY_AND_ASSIGN(CloseHandle);
+};
+
+}  // namespace android::hardware::automotive::audiocontrol::V2_0::implementation
diff --git a/automotive/audiocontrol/2.0/default/android.hardware.automotive.audiocontrol@2.0-service.rc b/automotive/audiocontrol/2.0/default/android.hardware.automotive.audiocontrol@2.0-service.rc
new file mode 100644
index 0000000..81c9be4
--- /dev/null
+++ b/automotive/audiocontrol/2.0/default/android.hardware.automotive.audiocontrol@2.0-service.rc
@@ -0,0 +1,4 @@
+service vendor.audiocontrol-hal-2.0 /vendor/bin/hw/android.hardware.automotive.audiocontrol@2.0-service
+    class hal
+    user audioserver
+    group system
diff --git a/automotive/audiocontrol/2.0/default/audiocontrol2_manifest.xml b/automotive/audiocontrol/2.0/default/audiocontrol2_manifest.xml
new file mode 100644
index 0000000..42d23ed
--- /dev/null
+++ b/automotive/audiocontrol/2.0/default/audiocontrol2_manifest.xml
@@ -0,0 +1,11 @@
+<manifest version="1.0" type="device">
+    <hal format="hidl">
+        <name>android.hardware.automotive.audiocontrol</name>
+        <transport>hwbinder</transport>
+        <version>2.0</version>
+        <interface>
+            <name>IAudioControl</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+</manifest>
\ No newline at end of file
diff --git a/automotive/audiocontrol/2.0/default/service.cpp b/automotive/audiocontrol/2.0/default/service.cpp
new file mode 100644
index 0000000..dcc46c3
--- /dev/null
+++ b/automotive/audiocontrol/2.0/default/service.cpp
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <unistd.h>
+
+#include <android-base/logging.h>
+#include <hidl/HidlTransportSupport.h>
+#include <utils/Errors.h>
+#include <utils/StrongPointer.h>
+
+#include "AudioControl.h"
+
+// libhidl:
+using android::hardware::configureRpcThreadpool;
+using android::hardware::joinRpcThreadpool;
+
+// Generated HIDL files
+using android::hardware::automotive::audiocontrol::V2_0::IAudioControl;
+
+// The namespace in which all our implementation code lives
+using namespace android::hardware::automotive::audiocontrol::V2_0::implementation;
+using namespace android;
+
+// Main service entry point
+int main() {
+    // Create an instance of our service class
+    android::sp<IAudioControl> service = new AudioControl();
+    configureRpcThreadpool(1, true /*callerWillJoin*/);
+
+    if (service->registerAsService() != OK) {
+        LOG(ERROR) << "registerAsService failed";
+        return 1;
+    }
+
+    // Join (forever) the thread pool we created for the service above
+    joinRpcThreadpool();
+
+    // We don't ever actually expect to return, so return an error if we do get here
+    return 2;
+}
\ No newline at end of file
diff --git a/automotive/audiocontrol/2.0/types.hal b/automotive/audiocontrol/2.0/types.hal
new file mode 100644
index 0000000..65b0988
--- /dev/null
+++ b/automotive/audiocontrol/2.0/types.hal
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.audiocontrol@2.0;
+
+/**
+ * Changes in audio focus that can be experienced
+ */
+enum AudioFocusChange : uint32_t {
+    NONE = 0,
+    GAIN = 1,
+    GAIN_TRANSIENT = 2,
+    GAIN_TRANSIENT_MAY_DUCK = 3,
+    GAIN_TRANSIENT_EXCLUSIVE = 4,
+    LOSS = -1 * GAIN,
+    LOSS_TRANSIENT = -1 * GAIN_TRANSIENT,
+    LOSS_TRANSIENT_CAN_DUCK = -1 * GAIN_TRANSIENT_MAY_DUCK,
+};
diff --git a/automotive/audiocontrol/2.0/vts/functional/Android.bp b/automotive/audiocontrol/2.0/vts/functional/Android.bp
new file mode 100644
index 0000000..520b042
--- /dev/null
+++ b/automotive/audiocontrol/2.0/vts/functional/Android.bp
@@ -0,0 +1,29 @@
+//
+// 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.
+//
+
+cc_test {
+    name: "VtsHalAudioControlV2_0TargetTest",
+    defaults: ["VtsHalTargetTestDefaults"],
+    srcs: ["VtsHalAudioControlV2_0TargetTest.cpp"],
+    static_libs: [
+        "android.hardware.automotive.audiocontrol@2.0",
+        "libgmock",
+    ],
+    test_suites: [
+        "general-tests",
+        "vts-core",
+    ],
+}
diff --git a/automotive/audiocontrol/2.0/vts/functional/VtsHalAudioControlV2_0TargetTest.cpp b/automotive/audiocontrol/2.0/vts/functional/VtsHalAudioControlV2_0TargetTest.cpp
new file mode 100644
index 0000000..0c10664
--- /dev/null
+++ b/automotive/audiocontrol/2.0/vts/functional/VtsHalAudioControlV2_0TargetTest.cpp
@@ -0,0 +1,155 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "VtsHalAudioControlTest"
+
+#include <gmock/gmock.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+
+#include <stdio.h>
+#include <string.h>
+
+#include <hidl/HidlTransportSupport.h>
+#include <hwbinder/ProcessState.h>
+#include <log/log.h>
+#include <utils/Errors.h>
+#include <utils/StrongPointer.h>
+
+#include <android/hardware/audio/common/6.0/types.h>
+#include <android/hardware/automotive/audiocontrol/2.0/IAudioControl.h>
+#include <android/hardware/automotive/audiocontrol/2.0/types.h>
+#include <android/log.h>
+
+using namespace ::android::hardware::automotive::audiocontrol::V2_0;
+using ::android::sp;
+using ::android::hardware::hidl_bitfield;
+using ::android::hardware::hidl_enum_range;
+using ::android::hardware::hidl_handle;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::audio::common::V6_0::AudioUsage;
+
+// The main test class for the automotive AudioControl HAL
+class CarAudioControlHidlTest : public testing::TestWithParam<std::string> {
+  public:
+    virtual void SetUp() override {
+        // Make sure we can connect to the driver
+        pAudioControl = IAudioControl::getService(GetParam());
+        ASSERT_NE(pAudioControl.get(), nullptr);
+    }
+
+    virtual void TearDown() override {}
+
+  protected:
+    sp<IAudioControl> pAudioControl;  // Every test needs access to the service
+};
+
+//
+// Tests start here...
+//
+
+/*
+ * Fader exercise test.  Note that only a subjective observer could determine if the
+ * fader actually works.  The only thing we can do is exercise the HAL and if the HAL crashes,
+ * we _might_ get a test failure if that breaks the connection to the driver.
+ */
+TEST_P(CarAudioControlHidlTest, FaderExercise) {
+    ALOGI("Fader exercise test (silent)");
+
+    // Set the fader all the way to the back
+    pAudioControl->setFadeTowardFront(-1.0f);
+
+    // Set the fader all the way to the front
+    pAudioControl->setFadeTowardFront(1.0f);
+
+    // Set the fader part way toward the back
+    pAudioControl->setFadeTowardFront(-0.333f);
+
+    // Set the fader to a out of bounds value (driver should clamp)
+    pAudioControl->setFadeTowardFront(99999.9f);
+
+    // Set the fader back to the middle
+    pAudioControl->setFadeTowardFront(0.0f);
+}
+
+/*
+ * Balance exercise test.
+ */
+TEST_P(CarAudioControlHidlTest, BalanceExercise) {
+    ALOGI("Balance exercise test (silent)");
+
+    // Set the balance all the way to the left
+    pAudioControl->setBalanceTowardRight(-1.0f);
+
+    // Set the balance all the way to the right
+    pAudioControl->setBalanceTowardRight(1.0f);
+
+    // Set the balance part way toward the left
+    pAudioControl->setBalanceTowardRight(-0.333f);
+
+    // Set the balance to a out of bounds value (driver should clamp)
+    pAudioControl->setBalanceTowardRight(99999.9f);
+
+    // Set the balance back to the middle
+    pAudioControl->setBalanceTowardRight(0.0f);
+}
+
+struct FocusListenerMock : public IFocusListener {
+    MOCK_METHOD(Return<void>, requestAudioFocus,
+                (hidl_bitfield<AudioUsage> usage, int zoneId,
+                 hidl_bitfield<AudioFocusChange> focusGain));
+    MOCK_METHOD(Return<void>, abandonAudioFocus, (hidl_bitfield<AudioUsage> usage, int zoneId));
+};
+
+/*
+ * Test focus listener registration.
+ *
+ * Verifies that:
+ * - registerFocusListener succeeds;
+ * - registering a second listener succeeds in replacing the first;
+ * - closing handle does not crash;
+ */
+TEST_P(CarAudioControlHidlTest, FocusListenerRegistration) {
+    ALOGI("Focus listener test");
+
+    sp<FocusListenerMock> listener = new FocusListenerMock();
+
+    auto hidlResult = pAudioControl->registerFocusListener(listener);
+    ASSERT_TRUE(hidlResult.isOk());
+
+    sp<FocusListenerMock> listener2 = new FocusListenerMock();
+
+    auto hidlResult2 = pAudioControl->registerFocusListener(listener2);
+    ASSERT_TRUE(hidlResult2.isOk());
+
+    const sp<ICloseHandle>& closeHandle = hidlResult2;
+    closeHandle->close();
+};
+
+TEST_P(CarAudioControlHidlTest, FocusChangeExercise) {
+    ALOGI("Focus Change test");
+
+    pAudioControl->onAudioFocusChange(AudioUsage::MEDIA | 0, 0,
+                                      AudioFocusChange::GAIN_TRANSIENT | 0);
+};
+
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, CarAudioControlHidlTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IAudioControl::descriptor)),
+        android::hardware::PrintInstanceNameToString);
\ No newline at end of file
diff --git a/automotive/can/1.0/Android.bp b/automotive/can/1.0/Android.bp
new file mode 100644
index 0000000..2221e66
--- /dev/null
+++ b/automotive/can/1.0/Android.bp
@@ -0,0 +1,21 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.automotive.can@1.0",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "types.hal",
+        "ICanBus.hal",
+        "ICanController.hal",
+        "ICanErrorListener.hal",
+        "ICanMessageListener.hal",
+        "ICloseHandle.hal",
+    ],
+    interfaces: [
+        "android.hidl.base@1.0",
+    ],
+    gen_java: true,
+}
diff --git a/automotive/can/1.0/ICanBus.hal b/automotive/can/1.0/ICanBus.hal
new file mode 100644
index 0000000..e68f16c
--- /dev/null
+++ b/automotive/can/1.0/ICanBus.hal
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.hardware.automotive.can@1.0;
+
+import ICanErrorListener;
+import ICanMessageListener;
+import ICloseHandle;
+
+/**
+ * Represents a CAN bus interface that's up and configured.
+ *
+ * Configuration part is done in ICanController.
+ */
+interface ICanBus {
+    /**
+     * Send CAN message.
+     *
+     * @param message CAN message to send out
+     * @return result OK in the case of success
+     *                PAYLOAD_TOO_LONG if the payload is too long
+     *                INTERFACE_DOWN if the bus is down
+     *                TRANSMISSION_FAILURE in case of transmission failure
+     */
+    send(CanMessage message) generates (Result result);
+
+    /**
+     * Requests HAL implementation to listen for specific CAN messages.
+     *
+     * HAL is responsible for maintaining listener set and sending out messages
+     * to each listener that matches given filter against received message.
+     *
+     * Empty filter list means no filtering. If two or more listeners requested
+     * different filters, HAL server must merge these to fulfill the superset of
+     * these filters. HAL must not send out a message to a listener which filter
+     * doesn't match given message id.
+     *
+     * If filtering is not supported at the hardware level (what's strongly
+     * recommended), it must be covered in the HAL.
+     *
+     * @param filter The set of requested filters
+     * @param listener The interface to receive the messages on
+     * @return result OK in the case of success
+     *                INTERFACE_DOWN if the bus is down
+     * @return close A handle to call in order to remove the listener
+     */
+    listen(vec<CanMessageFilter> filter, ICanMessageListener listener)
+            generates (Result result, ICloseHandle close);
+
+    /**
+     * Adds a new listener for CAN bus or interface errors.
+     *
+     * If the error is fatal, the client is supposed to drop any references to
+     * this specific ICanBus instance (see ICanErrorListener).
+     *
+     * @param listener The interface to receive the error events on
+     * @return close A handle to call in order to remove the listener
+     */
+    listenForErrors(ICanErrorListener listener) generates (ICloseHandle close);
+};
diff --git a/automotive/can/1.0/ICanController.hal b/automotive/can/1.0/ICanController.hal
new file mode 100644
index 0000000..0c6f53e
--- /dev/null
+++ b/automotive/can/1.0/ICanController.hal
@@ -0,0 +1,190 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.hardware.automotive.can@1.0;
+
+/**
+ * Represents a CAN controller that's capable of configuring CAN bus interfaces.
+ *
+ * The goal of this service is to configure CAN interfaces and bring up HIDL
+ * server instances of ICanBus for each one that's up.
+ *
+ * Providing an ICanController interface to configure CAN buses is optional.
+ * A system can elect to publish only ICanBus if the hardware is hardcoded
+ * for a specific application.
+ */
+interface ICanController {
+    /**
+     * Type of an interface, a mean to express the domain of device address.
+     */
+    enum InterfaceType : uint8_t {
+        /**
+         * Virtual SocketCAN interface.
+         *
+         * The address is an interface name, such as vcan0. If the interface
+         * doesn't exist, HAL server must create it.
+         *
+         * Valid InterfaceIdentifier types:
+         *  - address.
+         */
+        VIRTUAL,
+
+        /**
+         * Native SocketCAN interface.
+         *
+         * The address is an interface name, such as can0.
+         *
+         * Valid InterfaceIdentifier types:
+         *  - address;
+         *  - serialno.
+         */
+        SOCKETCAN,
+
+        /**
+         * Serial-based interface.
+         *
+         * The address is a patch to a device, such as /dev/ttyUSB0.
+         *
+         * Valid InterfaceIdentifier types:
+         *  - address;
+         *  - serialno.
+         */
+        SLCAN,
+
+        /**
+         * Proprietary interface, specific to the hardware system Android
+         * is running on. Instead of using address field, the interface is
+         * addressed with 0-based index.
+         *
+         * Valid InterfaceIdentifier types:
+         *  - index
+         */
+        INDEXED
+    };
+
+    enum Result : uint8_t {
+        OK,
+
+        /**
+         * General error class, if others are not applicable.
+         */
+        UNKNOWN_ERROR,
+
+        /**
+         * Up request was called out of order (i.e. trying to up the
+         * interface twice).
+         */
+        INVALID_STATE,
+
+        /** Interface type is not supported. */
+        NOT_SUPPORTED,
+
+        /**
+         * Provided address (interface name, device path) doesn't exist or there
+         * is no device with a given serial no.
+         */
+        BAD_ADDRESS,
+
+        /** Provided bit rate is not supported by the hardware. */
+        BAD_BITRATE,
+    };
+
+    /**
+     * Configuration of the (physical or virtual) CAN bus.
+     *
+     * ISO TP and CAN FD are currently not supported.
+     */
+    struct BusConfiguration {
+        /**
+         * Name under which ICanBus HIDL service should be published.
+         *
+         * It must consist of only alphanumeric characters and underscore
+         * (a-z, A-Z, 0-9, '_'), at least 1 and at most 32 characters long.
+         */
+        string name;
+
+        /**
+         * Type of the hardware (or virtual) CAN interface.
+         */
+        InterfaceType iftype;
+
+        /**
+         * Identification of hardware interface to configure.
+         */
+        safe_union InterfaceIdentifier {
+            /**
+             * Interface name or other mean of identification of the specific
+             * interface port. Syntax depends on {@see iftype}, for details
+             * {@see InterfaceType}.
+             */
+            string address;
+
+            /**
+             * Numerical identifier of interface, used for InterfaceType#INDEXED.
+             */
+            uint8_t index;
+
+            /**
+             * Alternatively to providing {@see address}, one may provide a list
+             * of interface serial number suffixes. If there happens to be
+             * a device (like USB2CAN) with a matching serial number suffix,
+             * it gets selected.
+             *
+             * Client may utilize this in two ways: by matching against the
+             * entire serial number, or the last few characters (usually one).
+             * The former is better for small-scale test deployments (with just
+             * a handful of vehicles), the latter is good for larger scale
+             * (where a small suffix list may support large test fleet).
+             */
+            vec<string> serialno;
+        } interfaceId;
+
+        /**
+         * Bit rate for CAN communication.
+         *
+         * Typical bit rates are: 100000, 125000, 250000, 500000.
+         *
+         * For virtual interfaces this value is ignored.
+         */
+        uint32_t bitrate;
+    };
+
+    /**
+     * Fetches the list of interface types supported by this HAL server.
+     *
+     * @return iftypes The list of supported interface types
+     */
+    getSupportedInterfaceTypes() generates (vec<InterfaceType> iftypes);
+
+    /**
+     * Bring up the CAN interface and publish ICanBus server instance.
+     *
+     * @param config Configuration of the CAN interface
+     * @return result OK if the operation succeeded; error code otherwise.
+     */
+    upInterface(BusConfiguration config) generates (Result result);
+
+    /**
+     * Unpublish ICanBus server instance and bring down the CAN interface.
+     *
+     * In case of failure, at least the ICanBus server instance must be
+     * unpublished and resources freed on best-effort basis.
+     *
+     * @param name Name of the interface (@see BusConfiguration#name} to
+     * bring down
+     * @return success true in case of success, false otherwise
+     */
+    downInterface(string name) generates (bool success);
+};
diff --git a/automotive/can/1.0/ICanErrorListener.hal b/automotive/can/1.0/ICanErrorListener.hal
new file mode 100644
index 0000000..8a6ba05
--- /dev/null
+++ b/automotive/can/1.0/ICanErrorListener.hal
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.hardware.automotive.can@1.0;
+
+/**
+ * CAN error listener.
+ */
+interface ICanErrorListener {
+    /**
+     * Called on error event.
+     *
+     * If the error is fatal, the client is supposed to drop any references to
+     * this specific ICanBus instance.
+     *
+     * @param error Error type
+     * @param isFatal Whether an error would result with ICanBus instance being unusable.
+     */
+    onError(ErrorEvent error, bool isFatal);
+};
diff --git a/automotive/can/1.0/ICanMessageListener.hal b/automotive/can/1.0/ICanMessageListener.hal
new file mode 100644
index 0000000..28161fa
--- /dev/null
+++ b/automotive/can/1.0/ICanMessageListener.hal
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.hardware.automotive.can@1.0;
+
+/**
+ * CAN message listener.
+ */
+interface ICanMessageListener {
+    /**
+     * Called on received CAN message.
+     *
+     * The timestamp field of message struct is set to time when the message
+     * was received by the hardware. If it's not possible to fetch exact
+     * hardware time, this field should be set as early as possible to decrease
+     * potential time delta.
+     *
+     * @param message Received CAN message
+     */
+    onReceive(CanMessage message);
+};
diff --git a/automotive/can/1.0/ICloseHandle.hal b/automotive/can/1.0/ICloseHandle.hal
new file mode 100644
index 0000000..924c58b
--- /dev/null
+++ b/automotive/can/1.0/ICloseHandle.hal
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.hardware.automotive.can@1.0;
+
+/**
+ * Represents a generic close handle to remove a callback that doesn't need
+ * active interface.
+ *
+ * When close() is called OR when the interface is released, the underlying
+ * resources must be freed.
+ */
+interface ICloseHandle {
+    /**
+     * Closes the handle.
+     *
+     * The call must not fail and must be issued by the client at most once.
+     * Otherwise, the server must ignore subsequent calls.
+     */
+    close();
+};
diff --git a/automotive/can/1.0/default/Android.bp b/automotive/can/1.0/default/Android.bp
new file mode 100644
index 0000000..ee2e92b
--- /dev/null
+++ b/automotive/can/1.0/default/Android.bp
@@ -0,0 +1,55 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_defaults {
+    name: "android.hardware.automotive.can@defaults",
+    cpp_std: "experimental",
+    cflags: [
+        "-Wall",
+        "-Wextra",
+        "-Werror",
+        "-DANDROID_BASE_UNIQUE_FD_DISABLE_IMPLICIT_CONVERSION=1",
+    ],
+    shared_libs: [
+        "libbase",
+        "libutils",
+    ],
+}
+
+cc_binary {
+    name: "android.hardware.automotive.can@1.0-service",
+    init_rc: ["android.hardware.automotive.can@1.0-service.rc"],
+    defaults: ["android.hardware.automotive.can@defaults"],
+    vendor: true,
+    relative_install_path: "hw",
+    srcs: [
+        "CanBus.cpp",
+        "CanBusNative.cpp",
+        "CanBusVirtual.cpp",
+        "CanBusSlcan.cpp",
+        "CanController.cpp",
+        "CanSocket.cpp",
+        "CloseHandle.cpp",
+        "service.cpp",
+    ],
+    shared_libs: [
+        "android.hardware.automotive.can@1.0",
+        "libhidlbase",
+    ],
+    static_libs: [
+        "android.hardware.automotive.can@libnetdevice",
+    ],
+}
diff --git a/automotive/can/1.0/default/CanBus.cpp b/automotive/can/1.0/default/CanBus.cpp
new file mode 100644
index 0000000..8fb09eb
--- /dev/null
+++ b/automotive/can/1.0/default/CanBus.cpp
@@ -0,0 +1,346 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "CanBus.h"
+
+#include "CloseHandle.h"
+
+#include <android-base/logging.h>
+#include <libnetdevice/can.h>
+#include <libnetdevice/libnetdevice.h>
+#include <linux/can.h>
+#include <linux/can/error.h>
+#include <linux/can/raw.h>
+
+namespace android::hardware::automotive::can::V1_0::implementation {
+
+/** Whether to log sent/received packets. */
+static constexpr bool kSuperVerbose = false;
+
+Return<Result> CanBus::send(const CanMessage& message) {
+    std::lock_guard<std::mutex> lck(mIsUpGuard);
+    if (!mIsUp) return Result::INTERFACE_DOWN;
+
+    if (UNLIKELY(kSuperVerbose)) {
+        LOG(VERBOSE) << "Sending " << toString(message);
+    }
+
+    if (message.payload.size() > CAN_MAX_DLEN) return Result::PAYLOAD_TOO_LONG;
+
+    struct canfd_frame frame = {};
+    frame.can_id = message.id;
+    if (message.isExtendedId) frame.can_id |= CAN_EFF_FLAG;
+    if (message.remoteTransmissionRequest) frame.can_id |= CAN_RTR_FLAG;
+    frame.len = message.payload.size();
+    memcpy(frame.data, message.payload.data(), message.payload.size());
+
+    if (!mSocket->send(frame)) return Result::TRANSMISSION_FAILURE;
+
+    return Result::OK;
+}
+
+Return<void> CanBus::listen(const hidl_vec<CanMessageFilter>& filter,
+                            const sp<ICanMessageListener>& listenerCb, listen_cb _hidl_cb) {
+    std::lock_guard<std::mutex> lck(mIsUpGuard);
+
+    if (listenerCb == nullptr) {
+        _hidl_cb(Result::INVALID_ARGUMENTS, nullptr);
+        return {};
+    }
+    if (!mIsUp) {
+        _hidl_cb(Result::INTERFACE_DOWN, nullptr);
+        return {};
+    }
+
+    std::lock_guard<std::mutex> lckListeners(mMsgListenersGuard);
+
+    sp<CloseHandle> closeHandle = new CloseHandle([this, listenerCb]() {
+        std::lock_guard<std::mutex> lck(mMsgListenersGuard);
+        std::erase_if(mMsgListeners, [&](const auto& e) { return e.callback == listenerCb; });
+    });
+    mMsgListeners.emplace_back(CanMessageListener{listenerCb, filter, closeHandle});
+    auto& listener = mMsgListeners.back();
+
+    // fix message IDs to have all zeros on bits not covered by mask
+    std::for_each(listener.filter.begin(), listener.filter.end(),
+                  [](auto& rule) { rule.id &= rule.mask; });
+
+    _hidl_cb(Result::OK, closeHandle);
+    return {};
+}
+
+CanBus::CanBus() {}
+
+CanBus::CanBus(const std::string& ifname) : mIfname(ifname) {}
+
+CanBus::~CanBus() {
+    std::lock_guard<std::mutex> lck(mIsUpGuard);
+    CHECK(!mIsUp) << "Interface is still up while being destroyed";
+
+    std::lock_guard<std::mutex> lckListeners(mMsgListenersGuard);
+    CHECK(mMsgListeners.empty()) << "Listener list is not empty while interface is being destroyed";
+}
+
+void CanBus::setErrorCallback(ErrorCallback errcb) {
+    CHECK(!mIsUp) << "Can't set error callback while interface is up";
+    CHECK(mErrCb == nullptr) << "Error callback is already set";
+    mErrCb = errcb;
+    CHECK(!mIsUp) << "Can't set error callback while interface is up";
+}
+
+ICanController::Result CanBus::preUp() {
+    return ICanController::Result::OK;
+}
+
+bool CanBus::postDown() {
+    return true;
+}
+
+ICanController::Result CanBus::up() {
+    std::lock_guard<std::mutex> lck(mIsUpGuard);
+
+    if (mIsUp) {
+        LOG(WARNING) << "Interface is already up";
+        return ICanController::Result::INVALID_STATE;
+    }
+
+    const auto preResult = preUp();
+    if (preResult != ICanController::Result::OK) return preResult;
+
+    const auto isUp = netdevice::isUp(mIfname);
+    if (!isUp.has_value()) {
+        // preUp() should prepare the interface (either create or make sure it's there)
+        LOG(ERROR) << "Interface " << mIfname << " didn't get prepared";
+        return ICanController::Result::BAD_ADDRESS;
+    }
+
+    if (!*isUp && !netdevice::up(mIfname)) {
+        LOG(ERROR) << "Can't bring " << mIfname << " up";
+        return ICanController::Result::UNKNOWN_ERROR;
+    }
+    mDownAfterUse = !*isUp;
+
+    using namespace std::placeholders;
+    CanSocket::ReadCallback rdcb = std::bind(&CanBus::onRead, this, _1, _2);
+    CanSocket::ErrorCallback errcb = std::bind(&CanBus::onError, this, _1);
+    mSocket = CanSocket::open(mIfname, rdcb, errcb);
+    if (!mSocket) {
+        if (mDownAfterUse) netdevice::down(mIfname);
+        return ICanController::Result::UNKNOWN_ERROR;
+    }
+
+    mIsUp = true;
+    return ICanController::Result::OK;
+}
+
+void CanBus::clearMsgListeners() {
+    std::vector<wp<ICloseHandle>> listenersToClose;
+    {
+        std::lock_guard<std::mutex> lck(mMsgListenersGuard);
+        std::transform(mMsgListeners.begin(), mMsgListeners.end(),
+                       std::back_inserter(listenersToClose),
+                       [](const auto& e) { return e.closeHandle; });
+    }
+
+    for (auto& weakListener : listenersToClose) {
+        /* Between populating listenersToClose and calling close method here, some listeners might
+         * have been already removed from the original mMsgListeners list (resulting in a dangling
+         * weak pointer here). It's fine - we just want to clean them up. */
+        auto listener = weakListener.promote();
+        if (listener != nullptr) listener->close();
+    }
+
+    std::lock_guard<std::mutex> lck(mMsgListenersGuard);
+    CHECK(mMsgListeners.empty()) << "Listeners list wasn't emptied";
+}
+
+void CanBus::clearErrListeners() {
+    std::lock_guard<std::mutex> lck(mErrListenersGuard);
+    mErrListeners.clear();
+}
+
+Return<sp<ICloseHandle>> CanBus::listenForErrors(const sp<ICanErrorListener>& listener) {
+    if (listener == nullptr) {
+        return new CloseHandle();
+    }
+
+    std::lock_guard<std::mutex> upLck(mIsUpGuard);
+    if (!mIsUp) {
+        listener->onError(ErrorEvent::INTERFACE_DOWN, true);
+        return new CloseHandle();
+    }
+
+    std::lock_guard<std::mutex> errLck(mErrListenersGuard);
+    mErrListeners.emplace_back(listener);
+
+    return new CloseHandle([this, listener]() {
+        std::lock_guard<std::mutex> lck(mErrListenersGuard);
+        std::erase(mErrListeners, listener);
+    });
+}
+
+bool CanBus::down() {
+    std::lock_guard<std::mutex> lck(mIsUpGuard);
+
+    if (!mIsUp) {
+        LOG(WARNING) << "Interface is already down";
+        return false;
+    }
+    mIsUp = false;
+
+    clearMsgListeners();
+    clearErrListeners();
+    mSocket.reset();
+
+    bool success = true;
+
+    if (mDownAfterUse && !netdevice::down(mIfname)) {
+        LOG(ERROR) << "Can't bring " << mIfname << " down";
+        // don't return yet, let's try to do best-effort cleanup
+        success = false;
+    }
+
+    if (!postDown()) success = false;
+
+    return success;
+}
+
+/**
+ * Helper function to determine if a flag meets the requirements of a
+ * FilterFlag. See definition of FilterFlag in types.hal
+ *
+ * \param filterFlag FilterFlag object to match flag against
+ * \param flag bool object from CanMessage object
+ */
+static bool satisfiesFilterFlag(FilterFlag filterFlag, bool flag) {
+    // TODO(b/144458917) add testing for this to VTS tests
+    if (filterFlag == FilterFlag::DONT_CARE) return true;
+    if (filterFlag == FilterFlag::SET) return flag;
+    if (filterFlag == FilterFlag::NOT_SET) return !flag;
+    return false;
+}
+
+/**
+ * Match the filter set against message id.
+ *
+ * For details on the filters syntax, please see CanMessageFilter at
+ * the HAL definition (types.hal).
+ *
+ * \param filter Filter to match against
+ * \param id Message id to filter
+ * \return true if the message id matches the filter, false otherwise
+ */
+static bool match(const hidl_vec<CanMessageFilter>& filter, CanMessageId id, bool isRtr,
+                  bool isExtendedId) {
+    if (filter.size() == 0) return true;
+
+    bool anyNonExcludeRulePresent = false;
+    bool anyNonExcludeRuleSatisfied = false;
+    for (auto& rule : filter) {
+        const bool satisfied = ((id & rule.mask) == rule.id) &&
+                               satisfiesFilterFlag(rule.rtr, isRtr) &&
+                               satisfiesFilterFlag(rule.extendedFormat, isExtendedId);
+
+        if (rule.exclude) {
+            // Any excluded (blacklist) rule not being satisfied invalidates the whole filter set.
+            if (satisfied) return false;
+        } else {
+            anyNonExcludeRulePresent = true;
+            if (satisfied) anyNonExcludeRuleSatisfied = true;
+        }
+    }
+    return !anyNonExcludeRulePresent || anyNonExcludeRuleSatisfied;
+}
+
+void CanBus::notifyErrorListeners(ErrorEvent err, bool isFatal) {
+    std::lock_guard<std::mutex> lck(mErrListenersGuard);
+    for (auto& listener : mErrListeners) {
+        if (!listener->onError(err, isFatal).isOk()) {
+            LOG(WARNING) << "Failed to notify listener about error";
+        }
+    }
+}
+
+static ErrorEvent parseErrorFrame(const struct canfd_frame& frame) {
+    // decode error frame (to a degree)
+    if ((frame.can_id & (CAN_ERR_BUSERROR | CAN_ERR_BUSOFF)) != 0) {
+        return ErrorEvent::BUS_ERROR;
+    }
+    if ((frame.data[1] & CAN_ERR_CRTL_TX_OVERFLOW) != 0) {
+        return ErrorEvent::TX_OVERFLOW;
+    }
+    if ((frame.data[1] & CAN_ERR_CRTL_RX_OVERFLOW) != 0) {
+        return ErrorEvent::RX_OVERFLOW;
+    }
+    if ((frame.data[2] & CAN_ERR_PROT_OVERLOAD) != 0) {
+        return ErrorEvent::BUS_OVERLOAD;
+    }
+    if ((frame.can_id & CAN_ERR_PROT) != 0) {
+        return ErrorEvent::MALFORMED_INPUT;
+    }
+    if ((frame.can_id & (CAN_ERR_CRTL | CAN_ERR_TRX | CAN_ERR_RESTARTED)) != 0) {
+        // "controller restarted" constitutes a HARDWARE_ERROR imo
+        return ErrorEvent::HARDWARE_ERROR;
+    }
+    return ErrorEvent::UNKNOWN_ERROR;
+}
+
+void CanBus::onRead(const struct canfd_frame& frame, std::chrono::nanoseconds timestamp) {
+    if ((frame.can_id & CAN_ERR_FLAG) != 0) {
+        // error bit is set
+        LOG(WARNING) << "CAN Error frame received";
+        // TODO(b/144458917) consider providing different values for isFatal, depending on error
+        notifyErrorListeners(parseErrorFrame(frame), false);
+        return;
+    }
+
+    CanMessage message = {};
+    message.id = frame.can_id & CAN_EFF_MASK;  // mask out eff/rtr/err flags
+    message.payload = hidl_vec<uint8_t>(frame.data, frame.data + frame.len);
+    message.timestamp = timestamp.count();
+    message.isExtendedId = (frame.can_id & CAN_EFF_FLAG) != 0;
+    message.remoteTransmissionRequest = (frame.can_id & CAN_RTR_FLAG) != 0;
+
+    if (UNLIKELY(kSuperVerbose)) {
+        LOG(VERBOSE) << "Got message " << toString(message);
+    }
+
+    std::lock_guard<std::mutex> lck(mMsgListenersGuard);
+    for (auto& listener : mMsgListeners) {
+        if (!match(listener.filter, message.id, message.remoteTransmissionRequest,
+                   message.isExtendedId))
+            continue;
+        if (!listener.callback->onReceive(message).isOk() && !listener.failedOnce) {
+            listener.failedOnce = true;
+            LOG(WARNING) << "Failed to notify listener about message";
+        }
+    }
+}
+
+void CanBus::onError(int errnoVal) {
+    auto eventType = ErrorEvent::HARDWARE_ERROR;
+
+    if (errnoVal == ENODEV || errnoVal == ENETDOWN) {
+        mDownAfterUse = false;
+        eventType = ErrorEvent::INTERFACE_DOWN;
+    }
+    notifyErrorListeners(eventType, true);
+
+    const auto errcb = mErrCb;
+    if (errcb != nullptr) errcb();
+}
+
+}  // namespace android::hardware::automotive::can::V1_0::implementation
diff --git a/automotive/can/1.0/default/CanBus.h b/automotive/can/1.0/default/CanBus.h
new file mode 100644
index 0000000..8b73258
--- /dev/null
+++ b/automotive/can/1.0/default/CanBus.h
@@ -0,0 +1,112 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "CanSocket.h"
+
+#include <android-base/unique_fd.h>
+#include <android/hardware/automotive/can/1.0/ICanBus.h>
+#include <android/hardware/automotive/can/1.0/ICanController.h>
+#include <utils/Mutex.h>
+
+#include <atomic>
+#include <thread>
+
+namespace android::hardware::automotive::can::V1_0::implementation {
+
+struct CanBus : public ICanBus {
+    using ErrorCallback = std::function<void()>;
+
+    virtual ~CanBus();
+
+    Return<Result> send(const CanMessage& message) override;
+    Return<void> listen(const hidl_vec<CanMessageFilter>& filter,
+                        const sp<ICanMessageListener>& listener, listen_cb _hidl_cb) override;
+    Return<sp<ICloseHandle>> listenForErrors(const sp<ICanErrorListener>& listener) override;
+
+    void setErrorCallback(ErrorCallback errcb);
+    ICanController::Result up();
+    bool down();
+
+  protected:
+    /**
+     * Blank constructor, since some interface types (such as SLCAN) don't get a name until after
+     * being initialized.
+     *
+     * If using this constructor, you MUST initialize mIfname prior to the completion of preUp().
+     */
+    CanBus();
+
+    CanBus(const std::string& ifname);
+
+    /**
+     * Prepare the SocketCAN interface.
+     *
+     * After calling this method, mIfname network interface is available and ready to be brought up.
+     *
+     * \return OK on success, or an error state on failure. See ICanController::Result
+     */
+    virtual ICanController::Result preUp();
+
+    /**
+     * Cleanup after bringing the interface down.
+     *
+     * This is a counterpart to preUp().
+     *
+     * \return true upon success and false upon failure
+     */
+    virtual bool postDown();
+
+    /** Network interface name. */
+    std::string mIfname;
+
+  private:
+    struct CanMessageListener {
+        sp<ICanMessageListener> callback;
+        hidl_vec<CanMessageFilter> filter;
+        wp<ICloseHandle> closeHandle;
+        bool failedOnce = false;
+    };
+    void clearMsgListeners();
+    void clearErrListeners();
+
+    void notifyErrorListeners(ErrorEvent err, bool isFatal);
+
+    void onRead(const struct canfd_frame& frame, std::chrono::nanoseconds timestamp);
+    void onError(int errnoVal);
+
+    std::mutex mMsgListenersGuard;
+    std::vector<CanMessageListener> mMsgListeners GUARDED_BY(mMsgListenersGuard);
+
+    std::mutex mErrListenersGuard;
+    std::vector<sp<ICanErrorListener>> mErrListeners GUARDED_BY(mErrListenersGuard);
+
+    std::unique_ptr<CanSocket> mSocket;
+    bool mDownAfterUse;
+
+    /**
+     * Guard for up flag is required to be held for entire time when the interface is being used
+     * (i.e. message being sent), because we don't want the interface to be torn down while
+     * executing that operation.
+     */
+    std::mutex mIsUpGuard;
+    bool mIsUp GUARDED_BY(mIsUpGuard) = false;
+
+    ErrorCallback mErrCb;
+};
+
+}  // namespace android::hardware::automotive::can::V1_0::implementation
diff --git a/automotive/can/1.0/default/CanBusNative.cpp b/automotive/can/1.0/default/CanBusNative.cpp
new file mode 100644
index 0000000..ef04d01
--- /dev/null
+++ b/automotive/can/1.0/default/CanBusNative.cpp
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "CanBusNative.h"
+
+#include <android-base/logging.h>
+#include <libnetdevice/can.h>
+#include <libnetdevice/libnetdevice.h>
+
+namespace android::hardware::automotive::can::V1_0::implementation {
+
+CanBusNative::CanBusNative(const std::string& ifname, uint32_t bitrate)
+    : CanBus(ifname), mBitrate(bitrate) {}
+
+ICanController::Result CanBusNative::preUp() {
+    if (!netdevice::exists(mIfname)) {
+        LOG(ERROR) << "Interface " << mIfname << " doesn't exist";
+        return ICanController::Result::BAD_ADDRESS;
+    }
+
+    if (mBitrate == 0) {
+        // interface is already up and we just want to register it
+        return ICanController::Result::OK;
+    }
+
+    if (!netdevice::down(mIfname)) {
+        LOG(ERROR) << "Can't bring " << mIfname << " down (to configure it)";
+        return ICanController::Result::UNKNOWN_ERROR;
+    }
+
+    if (!netdevice::can::setBitrate(mIfname, mBitrate)) {
+        LOG(ERROR) << "Can't set bitrate " << mBitrate << " for " << mIfname;
+        return ICanController::Result::BAD_BITRATE;
+    }
+
+    return ICanController::Result::OK;
+}
+
+}  // namespace android::hardware::automotive::can::V1_0::implementation
diff --git a/automotive/can/1.0/default/CanBusNative.h b/automotive/can/1.0/default/CanBusNative.h
new file mode 100644
index 0000000..04d7194
--- /dev/null
+++ b/automotive/can/1.0/default/CanBusNative.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "CanBus.h"
+
+namespace android::hardware::automotive::can::V1_0::implementation {
+
+struct CanBusNative : public CanBus {
+    CanBusNative(const std::string& ifname, uint32_t bitrate);
+
+  protected:
+    virtual ICanController::Result preUp() override;
+
+  private:
+    const uint32_t mBitrate;
+};
+
+}  // namespace android::hardware::automotive::can::V1_0::implementation
diff --git a/automotive/can/1.0/default/CanBusSlcan.cpp b/automotive/can/1.0/default/CanBusSlcan.cpp
new file mode 100644
index 0000000..0feee8f
--- /dev/null
+++ b/automotive/can/1.0/default/CanBusSlcan.cpp
@@ -0,0 +1,173 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "CanBusSlcan.h"
+
+#include <android-base/logging.h>
+#include <libnetdevice/can.h>
+#include <libnetdevice/libnetdevice.h>
+
+#include <net/if.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <termios.h>
+
+namespace android::hardware::automotive::can::V1_0::implementation {
+
+namespace slcanprotocol {
+static const std::string kOpenCommand = "O\r";
+static const std::string kCloseCommand = "C\r";
+static constexpr int kSlcanDiscipline = N_SLCAN;
+static constexpr int kDefaultDiscipline = N_TTY;
+
+static const std::map<uint32_t, std::string> kBitrateCommands = {
+        {10000, "C\rS0\r"},  {20000, "C\rS1\r"},  {50000, "C\rS2\r"},
+        {100000, "C\rS3\r"}, {125000, "C\rS4\r"}, {250000, "C\rS5\r"},
+        {500000, "C\rS6\r"}, {800000, "C\rS7\r"}, {1000000, "C\rS8\r"}};
+}  // namespace slcanprotocol
+
+/**
+ * Serial Line CAN constructor
+ * \param string uartName - name of slcan device (e.x. /dev/ttyUSB0)
+ * \param uint32_t bitrate - speed of the CAN bus (125k = MSCAN, 500k = HSCAN)
+ */
+CanBusSlcan::CanBusSlcan(const std::string& uartName, uint32_t bitrate)
+    : CanBus(), mUartName(uartName), kBitrate(bitrate) {}
+
+/** helper function to update CanBusSlcan object's iface name */
+ICanController::Result CanBusSlcan::updateIfaceName(base::unique_fd& uartFd) {
+    struct ifreq ifrequest = {};
+    /*
+     * Fetching the iface name with an ioctl won't interfere with an open socketCAN iface attached
+     * to this tty. This is important in the event we are trying to register a SLCAN based iface
+     * that has already been configured and brought up.
+     */
+    if (ioctl(uartFd.get(), SIOCGIFNAME, ifrequest.ifr_name) < 0) {
+        LOG(ERROR) << "Failed to get the name of the created device: " << strerror(errno);
+        return ICanController::Result::UNKNOWN_ERROR;
+    }
+
+    // Update the CanBus object with name that was assigned to it
+    mIfname = ifrequest.ifr_name;
+    return ICanController::Result::OK;
+}
+
+ICanController::Result CanBusSlcan::preUp() {
+    // verify valid bitrate and translate to serial command format
+    std::optional<std::string> canBitrateCommand = std::nullopt;
+    if (kBitrate != 0) {
+        const auto lookupIt = slcanprotocol::kBitrateCommands.find(kBitrate);
+        if (lookupIt == slcanprotocol::kBitrateCommands.end()) {
+            return ICanController::Result::BAD_BITRATE;
+        }
+        canBitrateCommand = lookupIt->second;
+    }
+
+    /* Attempt to open the uart in r/w without blocking or becoming the
+     * controlling terminal */
+    mFd = base::unique_fd(open(mUartName.c_str(), O_RDWR | O_NONBLOCK | O_NOCTTY));
+    if (!mFd.ok()) {
+        LOG(ERROR) << "SLCAN Failed to open " << mUartName << ": " << strerror(errno);
+        return ICanController::Result::BAD_ADDRESS;
+    }
+
+    // If the device is already up, update the iface name in our CanBusSlcan object
+    if (kBitrate == 0) {
+        return updateIfaceName(mFd);
+    }
+
+    // blank terminal settings and pull them from the device
+    struct termios terminalSettings = {};
+    if (tcgetattr(mFd.get(), &terminalSettings) < 0) {
+        LOG(ERROR) << "Failed to read attrs of" << mUartName << ": " << strerror(errno);
+        return ICanController::Result::UNKNOWN_ERROR;
+    }
+
+    // change settings to raw mode
+    cfmakeraw(&terminalSettings);
+
+    // disable software flow control
+    terminalSettings.c_iflag &= ~IXOFF;
+    // enable hardware flow control
+    terminalSettings.c_cflag |= CRTSCTS;
+
+    struct serial_struct serialSettings;
+    // get serial settings
+    if (ioctl(mFd.get(), TIOCGSERIAL, &serialSettings) < 0) {
+        LOG(ERROR) << "Failed to read serial settings from " << mUartName << ": "
+                   << strerror(errno);
+        return ICanController::Result::UNKNOWN_ERROR;
+    }
+    // set low latency mode
+    serialSettings.flags |= ASYNC_LOW_LATENCY;
+    // apply serial settings
+    if (ioctl(mFd.get(), TIOCSSERIAL, &serialSettings) < 0) {
+        LOG(ERROR) << "Failed to set low latency mode on " << mUartName << ": " << strerror(errno);
+        return ICanController::Result::UNKNOWN_ERROR;
+    }
+
+    /* TCSADRAIN applies settings after we finish writing the rest of our
+     * changes (as opposed to TCSANOW, which changes immediately) */
+    if (tcsetattr(mFd.get(), TCSADRAIN, &terminalSettings) < 0) {
+        LOG(ERROR) << "Failed to apply terminal settings to " << mUartName << ": "
+                   << strerror(errno);
+        return ICanController::Result::UNKNOWN_ERROR;
+    }
+
+    // apply speed setting for CAN
+    if (write(mFd.get(), canBitrateCommand->c_str(), canBitrateCommand->length()) <= 0) {
+        LOG(ERROR) << "Failed to apply CAN bitrate: " << strerror(errno);
+        return ICanController::Result::UNKNOWN_ERROR;
+    }
+
+    // set open flag TODO: also support listen only
+    if (write(mFd.get(), slcanprotocol::kOpenCommand.c_str(),
+              slcanprotocol::kOpenCommand.length()) <= 0) {
+        LOG(ERROR) << "Failed to set open flag: " << strerror(errno);
+        return ICanController::Result::UNKNOWN_ERROR;
+    }
+
+    // set line discipline to slcan
+    if (ioctl(mFd.get(), TIOCSETD, &slcanprotocol::kSlcanDiscipline) < 0) {
+        LOG(ERROR) << "Failed to set line discipline to slcan: " << strerror(errno);
+        return ICanController::Result::UNKNOWN_ERROR;
+    }
+
+    // Update the CanBus object with name that was assigned to it
+    return updateIfaceName(mFd);
+}
+
+bool CanBusSlcan::postDown() {
+    // reset the line discipline to TTY mode
+    if (ioctl(mFd.get(), TIOCSETD, &slcanprotocol::kDefaultDiscipline) < 0) {
+        LOG(ERROR) << "Failed to reset line discipline!";
+        return false;
+    }
+
+    // issue the close command
+    if (write(mFd.get(), slcanprotocol::kCloseCommand.c_str(),
+              slcanprotocol::kCloseCommand.length()) <= 0) {
+        LOG(ERROR) << "Failed to close tty!";
+        return false;
+    }
+
+    // close our unique_fd
+    mFd.reset();
+
+    return true;
+}
+
+}  // namespace android::hardware::automotive::can::V1_0::implementation
diff --git a/automotive/can/1.0/default/CanBusSlcan.h b/automotive/can/1.0/default/CanBusSlcan.h
new file mode 100644
index 0000000..2328a2c
--- /dev/null
+++ b/automotive/can/1.0/default/CanBusSlcan.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <linux/serial.h>
+#include <linux/tty.h>
+#include <net/if.h>
+#include <termios.h>
+#include "CanBus.h"
+
+namespace android::hardware::automotive::can::V1_0::implementation {
+
+struct CanBusSlcan : public CanBus {
+    CanBusSlcan(const std::string& uartName, uint32_t bitrate);
+
+  protected:
+    virtual ICanController::Result preUp() override;
+    virtual bool postDown() override;
+
+  private:
+    ICanController::Result updateIfaceName(base::unique_fd& uartFd);
+
+    const std::string mUartName;
+    const uint32_t kBitrate;
+    base::unique_fd mFd;
+};
+
+}  // namespace android::hardware::automotive::can::V1_0::implementation
diff --git a/automotive/can/1.0/default/CanBusVirtual.cpp b/automotive/can/1.0/default/CanBusVirtual.cpp
new file mode 100644
index 0000000..32fe8d6
--- /dev/null
+++ b/automotive/can/1.0/default/CanBusVirtual.cpp
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "CanBusVirtual.h"
+
+#include <android-base/logging.h>
+#include <libnetdevice/libnetdevice.h>
+
+namespace android::hardware::automotive::can::V1_0::implementation {
+
+CanBusVirtual::CanBusVirtual(const std::string& ifname) : CanBus(ifname) {}
+
+ICanController::Result CanBusVirtual::preUp() {
+    if (netdevice::exists(mIfname)) return ICanController::Result::OK;
+
+    LOG(DEBUG) << "Virtual interface " << mIfname << " doesn't exist, creating...";
+    mWasCreated = true;
+    if (!netdevice::add(mIfname, "vcan")) {
+        LOG(ERROR) << "Can't create vcan interface " << mIfname;
+        return ICanController::Result::UNKNOWN_ERROR;
+    }
+
+    return ICanController::Result::OK;
+}
+
+bool CanBusVirtual::postDown() {
+    if (mWasCreated) {
+        mWasCreated = false;
+        if (!netdevice::del(mIfname)) {
+            LOG(ERROR) << "Couldn't remove vcan interface " << mIfname;
+            return false;
+        }
+    }
+    return true;
+}
+
+}  // namespace android::hardware::automotive::can::V1_0::implementation
diff --git a/automotive/can/1.0/default/CanBusVirtual.h b/automotive/can/1.0/default/CanBusVirtual.h
new file mode 100644
index 0000000..3990b20
--- /dev/null
+++ b/automotive/can/1.0/default/CanBusVirtual.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "CanBus.h"
+
+namespace android::hardware::automotive::can::V1_0::implementation {
+
+struct CanBusVirtual : public CanBus {
+    CanBusVirtual(const std::string& ifname);
+
+  protected:
+    virtual ICanController::Result preUp() override;
+    virtual bool postDown() override;
+
+  private:
+    bool mWasCreated = false;
+};
+
+}  // namespace android::hardware::automotive::can::V1_0::implementation
diff --git a/automotive/can/1.0/default/CanController.cpp b/automotive/can/1.0/default/CanController.cpp
new file mode 100644
index 0000000..fb648c1
--- /dev/null
+++ b/automotive/can/1.0/default/CanController.cpp
@@ -0,0 +1,137 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "CanController.h"
+
+#include "CanBusNative.h"
+#include "CanBusSlcan.h"
+#include "CanBusVirtual.h"
+
+#include <android-base/logging.h>
+#include <android/hidl/manager/1.2/IServiceManager.h>
+
+#include <regex>
+
+namespace android::hardware::automotive::can::V1_0::implementation {
+
+using IfaceIdDisc = ICanController::BusConfiguration::InterfaceIdentifier::hidl_discriminator;
+
+Return<void> CanController::getSupportedInterfaceTypes(getSupportedInterfaceTypes_cb _hidl_cb) {
+    _hidl_cb({ICanController::InterfaceType::VIRTUAL, ICanController::InterfaceType::SOCKETCAN,
+              ICanController::InterfaceType::SLCAN});
+    return {};
+}
+
+static bool isValidName(const std::string& name) {
+    static const std::regex nameRE("^[a-zA-Z0-9_]{1,32}$");
+    return std::regex_match(name, nameRE);
+}
+
+Return<ICanController::Result> CanController::upInterface(
+        const ICanController::BusConfiguration& config) {
+    LOG(VERBOSE) << "Attempting to bring interface up: " << toString(config);
+
+    std::lock_guard<std::mutex> lck(mCanBusesGuard);
+
+    if (!isValidName(config.name)) {
+        LOG(ERROR) << "Bus name " << config.name << " is invalid";
+        return ICanController::Result::UNKNOWN_ERROR;
+    }
+
+    if (mCanBuses.find(config.name) != mCanBuses.end()) {
+        LOG(ERROR) << "Bus " << config.name << " is already up";
+        return ICanController::Result::INVALID_STATE;
+    }
+
+    sp<CanBus> busService;
+
+    if (config.iftype == ICanController::InterfaceType::SOCKETCAN) {
+        // TODO(b/135918744): support serialno
+        if (config.interfaceId.getDiscriminator() == IfaceIdDisc::address) {
+            busService = new CanBusNative(config.interfaceId.address(), config.bitrate);
+        } else {
+            return ICanController::Result::BAD_ADDRESS;
+        }
+    } else if (config.iftype == ICanController::InterfaceType::VIRTUAL) {
+        if (config.interfaceId.getDiscriminator() == IfaceIdDisc::address) {
+            busService = new CanBusVirtual(config.interfaceId.address());
+        } else {
+            return ICanController::Result::BAD_ADDRESS;
+        }
+    } else if (config.iftype == ICanController::InterfaceType::SLCAN) {
+        if (config.interfaceId.getDiscriminator() == IfaceIdDisc::address) {
+            busService = new CanBusSlcan(config.interfaceId.address(), config.bitrate);
+        } else {
+            return ICanController::Result::BAD_ADDRESS;
+        }
+    } else {
+        return ICanController::Result::NOT_SUPPORTED;
+    }
+
+    busService->setErrorCallback([this, name = config.name]() { downInterface(name); });
+
+    const auto result = busService->up();
+    if (result != ICanController::Result::OK) return result;
+
+    if (busService->registerAsService(config.name) != OK) {
+        LOG(ERROR) << "Failed to register ICanBus/" << config.name;
+        if (!busService->down()) {
+            LOG(WARNING) << "Failed to bring down CAN bus that failed to register";
+        }
+        return ICanController::Result::UNKNOWN_ERROR;
+    }
+
+    mCanBuses[config.name] = busService;
+
+    return ICanController::Result::OK;
+}
+
+static bool unregisterCanBusService(const hidl_string& name, sp<CanBus> busService) {
+    auto manager = hidl::manager::V1_2::IServiceManager::getService();
+    if (!manager) return false;
+    const auto res = manager->tryUnregister(ICanBus::descriptor, name, busService);
+    if (!res.isOk()) return false;
+    return res;
+}
+
+Return<bool> CanController::downInterface(const hidl_string& name) {
+    LOG(VERBOSE) << "Attempting to bring interface down: " << name;
+
+    std::lock_guard<std::mutex> lck(mCanBusesGuard);
+
+    auto busEntry = mCanBuses.extract(name);
+    if (!busEntry) {
+        LOG(WARNING) << "Interface " << name << " is not up";
+        return false;
+    }
+
+    auto success = true;
+
+    if (!unregisterCanBusService(name, busEntry.mapped())) {
+        LOG(ERROR) << "Couldn't unregister " << name;
+        // don't return yet, let's try to do best-effort cleanup
+        success = false;
+    }
+
+    if (!busEntry.mapped()->down()) {
+        LOG(ERROR) << "Couldn't bring " << name << " down";
+        success = false;
+    }
+
+    return success;
+}
+
+}  // namespace android::hardware::automotive::can::V1_0::implementation
diff --git a/automotive/can/1.0/default/CanController.h b/automotive/can/1.0/default/CanController.h
new file mode 100644
index 0000000..99a551a
--- /dev/null
+++ b/automotive/can/1.0/default/CanController.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "CanBus.h"
+
+#include <android/hardware/automotive/can/1.0/ICanController.h>
+
+namespace android::hardware::automotive::can::V1_0::implementation {
+
+struct CanController : public ICanController {
+    Return<void> getSupportedInterfaceTypes(getSupportedInterfaceTypes_cb _hidl_cb) override;
+
+    Return<ICanController::Result> upInterface(
+            const ICanController::BusConfiguration& config) override;
+    Return<bool> downInterface(const hidl_string& name) override;
+
+  private:
+    std::mutex mCanBusesGuard;
+    std::map<std::string, sp<CanBus>> mCanBuses GUARDED_BY(mCanBusesGuard);
+};
+
+}  // namespace android::hardware::automotive::can::V1_0::implementation
diff --git a/automotive/can/1.0/default/CanSocket.cpp b/automotive/can/1.0/default/CanSocket.cpp
new file mode 100644
index 0000000..86ccc0e
--- /dev/null
+++ b/automotive/can/1.0/default/CanSocket.cpp
@@ -0,0 +1,150 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "CanSocket.h"
+
+#include <android-base/logging.h>
+#include <libnetdevice/can.h>
+#include <libnetdevice/libnetdevice.h>
+#include <linux/can.h>
+#include <utils/SystemClock.h>
+
+#include <chrono>
+
+namespace android::hardware::automotive::can::V1_0::implementation {
+
+using namespace std::chrono_literals;
+
+/* How frequently the read thread checks whether the interface was asked to be down.
+ *
+ * Note: This does *not* affect read timing or bandwidth, just CPU load vs time to
+ *       down the interface. */
+static constexpr auto kReadPooling = 100ms;
+
+std::unique_ptr<CanSocket> CanSocket::open(const std::string& ifname, ReadCallback rdcb,
+                                           ErrorCallback errcb) {
+    auto sock = netdevice::can::socket(ifname);
+    if (!sock.ok()) {
+        LOG(ERROR) << "Can't open CAN socket on " << ifname;
+        return nullptr;
+    }
+
+    // Can't use std::make_unique due to private CanSocket constructor.
+    return std::unique_ptr<CanSocket>(new CanSocket(std::move(sock), rdcb, errcb));
+}
+
+CanSocket::CanSocket(base::unique_fd socket, ReadCallback rdcb, ErrorCallback errcb)
+    : mReadCallback(rdcb),
+      mErrorCallback(errcb),
+      mSocket(std::move(socket)),
+      mReaderThread(&CanSocket::readerThread, this) {}
+
+CanSocket::~CanSocket() {
+    mStopReaderThread = true;
+
+    /* CanSocket can be brought down as a result of read failure, from the same thread,
+     * so let's just detach and let it finish on its own. */
+    if (mReaderThreadFinished) {
+        mReaderThread.detach();
+    } else {
+        mReaderThread.join();
+    }
+}
+
+bool CanSocket::send(const struct canfd_frame& frame) {
+    const auto res = write(mSocket.get(), &frame, CAN_MTU);
+    if (res < 0) {
+        LOG(DEBUG) << "CanSocket send failed: " << errno;
+        return false;
+    }
+    if (res != CAN_MTU) {
+        LOG(DEBUG) << "CanSocket sent wrong number of bytes: " << res;
+        return false;
+    }
+    return true;
+}
+
+static struct timeval toTimeval(std::chrono::microseconds t) {
+    struct timeval tv;
+    tv.tv_sec = t / 1s;
+    tv.tv_usec = (t % 1s) / 1us;
+    return tv;
+}
+
+static int selectRead(const base::unique_fd& fd, std::chrono::microseconds timeout) {
+    auto timeouttv = toTimeval(timeout);
+    fd_set readfds;
+    FD_ZERO(&readfds);
+    FD_SET(fd.get(), &readfds);
+    return select(fd.get() + 1, &readfds, nullptr, nullptr, &timeouttv);
+}
+
+void CanSocket::readerThread() {
+    LOG(VERBOSE) << "Reader thread started";
+    int errnoCopy = 0;
+
+    while (!mStopReaderThread) {
+        /* The ideal would be to have a blocking read(3) call and interrupt it with shutdown(3).
+         * This is unfortunately not supported for SocketCAN, so we need to rely on select(3). */
+        const auto sel = selectRead(mSocket, kReadPooling);
+        if (sel == 0) continue;  // timeout
+        if (sel == -1) {
+            LOG(ERROR) << "Select failed: " << errno;
+            break;
+        }
+
+        struct canfd_frame frame;
+        const auto nbytes = read(mSocket.get(), &frame, CAN_MTU);
+
+        /* We could use SIOCGSTAMP to get a precise UNIX timestamp for a given packet, but what
+         * we really need is a time since boot. There is no direct way to convert between these
+         * clocks. We could implement a class to calculate the difference between the clocks
+         * (querying both several times and picking the smallest difference); apply the difference
+         * to a SIOCGSTAMP returned value; re-synchronize if the elapsed time is too much in the
+         * past (indicating the UNIX timestamp might have been adjusted).
+         *
+         * Apart from the added complexity, it's possible the added calculations and system calls
+         * would add so much time to the processing pipeline so the precision of the reported time
+         * was buried under the subsystem latency. Let's just use a local time since boot here and
+         * leave precise hardware timestamps for custom proprietary implementations (if needed). */
+        const std::chrono::nanoseconds ts(elapsedRealtimeNano());
+
+        if (nbytes != CAN_MTU) {
+            if (nbytes >= 0) {
+                LOG(ERROR) << "Failed to read CAN packet, got " << nbytes << " bytes";
+                break;
+            }
+            if (errno == EAGAIN) continue;
+
+            errnoCopy = errno;
+            LOG(ERROR) << "Failed to read CAN packet: " << strerror(errno) << " (" << errno << ")";
+            break;
+        }
+
+        mReadCallback(frame, ts);
+    }
+
+    bool failed = !mStopReaderThread;
+    auto errCb = mErrorCallback;
+    mReaderThreadFinished = true;
+
+    // Don't access any fields from here, see CanSocket::~CanSocket comment about detached thread
+    if (failed) errCb(errnoCopy);
+
+    LOG(VERBOSE) << "Reader thread stopped";
+}
+
+}  // namespace android::hardware::automotive::can::V1_0::implementation
diff --git a/automotive/can/1.0/default/CanSocket.h b/automotive/can/1.0/default/CanSocket.h
new file mode 100644
index 0000000..fd956b5
--- /dev/null
+++ b/automotive/can/1.0/default/CanSocket.h
@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android-base/macros.h>
+#include <android-base/unique_fd.h>
+#include <linux/can.h>
+
+#include <atomic>
+#include <chrono>
+#include <thread>
+
+namespace android::hardware::automotive::can::V1_0::implementation {
+
+/** Wrapper around SocketCAN socket. */
+struct CanSocket {
+    using ReadCallback = std::function<void(const struct canfd_frame&, std::chrono::nanoseconds)>;
+    using ErrorCallback = std::function<void(int errnoVal)>;
+
+    /**
+     * Open and bind SocketCAN socket.
+     *
+     * \param ifname SocketCAN network interface name (such as can0)
+     * \param rdcb Callback on received messages
+     * \param errcb Callback on socket failure
+     * \return Socket instance, or nullptr if it wasn't possible to open one
+     */
+    static std::unique_ptr<CanSocket> open(const std::string& ifname, ReadCallback rdcb,
+                                           ErrorCallback errcb);
+    virtual ~CanSocket();
+
+    /**
+     * Send CAN frame.
+     *
+     * \param frame Frame to send
+     * \return true in case of success, false otherwise
+     */
+    bool send(const struct canfd_frame& frame);
+
+  private:
+    CanSocket(base::unique_fd socket, ReadCallback rdcb, ErrorCallback errcb);
+    void readerThread();
+
+    ReadCallback mReadCallback;
+    ErrorCallback mErrorCallback;
+
+    const base::unique_fd mSocket;
+    std::thread mReaderThread;
+    std::atomic<bool> mStopReaderThread = false;
+    std::atomic<bool> mReaderThreadFinished = false;
+
+    DISALLOW_COPY_AND_ASSIGN(CanSocket);
+};
+
+}  // namespace android::hardware::automotive::can::V1_0::implementation
diff --git a/automotive/can/1.0/default/CloseHandle.cpp b/automotive/can/1.0/default/CloseHandle.cpp
new file mode 100644
index 0000000..e1ffe2b
--- /dev/null
+++ b/automotive/can/1.0/default/CloseHandle.cpp
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "CloseHandle.h"
+
+namespace android::hardware::automotive::can::V1_0::implementation {
+
+CloseHandle::CloseHandle(Callback callback) : mCallback(callback) {}
+
+CloseHandle::~CloseHandle() {
+    close();
+}
+
+Return<void> CloseHandle::close() {
+    const auto wasClosed = mIsClosed.exchange(true);
+    if (wasClosed) return {};
+
+    if (mCallback != nullptr) mCallback();
+    return {};
+}
+
+}  // namespace android::hardware::automotive::can::V1_0::implementation
diff --git a/automotive/can/1.0/default/CloseHandle.h b/automotive/can/1.0/default/CloseHandle.h
new file mode 100644
index 0000000..c332d74
--- /dev/null
+++ b/automotive/can/1.0/default/CloseHandle.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android-base/macros.h>
+#include <android/hardware/automotive/can/1.0/ICloseHandle.h>
+
+namespace android::hardware::automotive::can::V1_0::implementation {
+
+/** Generic ICloseHandle implementation ignoring double-close events. */
+struct CloseHandle : public ICloseHandle {
+    using Callback = std::function<void()>;
+
+    /**
+     * Create a handle with a callback.
+     *
+     * The callback is guaranteed to be called exactly once.
+     *
+     * \param callback Called on the first close() call, or on destruction of the handle
+     */
+    CloseHandle(Callback callback = nullptr);
+    virtual ~CloseHandle();
+
+    Return<void> close() override;
+
+  private:
+    const Callback mCallback;
+    std::atomic<bool> mIsClosed = false;
+
+    DISALLOW_COPY_AND_ASSIGN(CloseHandle);
+};
+
+}  // namespace android::hardware::automotive::can::V1_0::implementation
diff --git a/automotive/can/1.0/default/android.hardware.automotive.can@1.0-service.rc b/automotive/can/1.0/default/android.hardware.automotive.can@1.0-service.rc
new file mode 100644
index 0000000..a629bda
--- /dev/null
+++ b/automotive/can/1.0/default/android.hardware.automotive.can@1.0-service.rc
@@ -0,0 +1,5 @@
+service can-hal-1.0-service /vendor/bin/hw/android.hardware.automotive.can@1.0-service
+    class hal
+    capabilities NET_ADMIN
+    user vehicle_network
+    group system inet
diff --git a/automotive/can/1.0/default/libnetdevice/Android.bp b/automotive/can/1.0/default/libnetdevice/Android.bp
new file mode 100644
index 0000000..31e5ad0
--- /dev/null
+++ b/automotive/can/1.0/default/libnetdevice/Android.bp
@@ -0,0 +1,30 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_library_static {
+    name: "android.hardware.automotive.can@libnetdevice",
+    defaults: ["android.hardware.automotive.can@defaults"],
+    vendor_available: true,
+    relative_install_path: "hw",
+    srcs: [
+        "NetlinkRequest.cpp",
+        "NetlinkSocket.cpp",
+        "can.cpp",
+        "common.cpp",
+        "libnetdevice.cpp",
+    ],
+    export_include_dirs: ["include"],
+}
diff --git a/automotive/can/1.0/default/libnetdevice/NetlinkRequest.cpp b/automotive/can/1.0/default/libnetdevice/NetlinkRequest.cpp
new file mode 100644
index 0000000..556debf
--- /dev/null
+++ b/automotive/can/1.0/default/libnetdevice/NetlinkRequest.cpp
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "NetlinkRequest.h"
+
+#include <android-base/logging.h>
+
+namespace android::netdevice::impl {
+
+static struct rtattr* nlmsg_tail(struct nlmsghdr* n) {
+    return reinterpret_cast<struct rtattr*>(  //
+            reinterpret_cast<uintptr_t>(n) + NLMSG_ALIGN(n->nlmsg_len));
+}
+
+struct rtattr* addattr_l(struct nlmsghdr* n, size_t maxLen, rtattrtype_t type, const void* data,
+                         size_t dataLen) {
+    size_t newLen = NLMSG_ALIGN(n->nlmsg_len) + RTA_SPACE(dataLen);
+    if (newLen > maxLen) {
+        LOG(ERROR) << "addattr_l failed - exceeded maxLen: " << newLen << " > " << maxLen;
+        return nullptr;
+    }
+
+    auto attr = nlmsg_tail(n);
+    attr->rta_len = RTA_SPACE(dataLen);
+    attr->rta_type = type;
+    if (dataLen > 0) memcpy(RTA_DATA(attr), data, dataLen);
+
+    n->nlmsg_len = newLen;
+    return attr;
+}
+
+struct rtattr* addattr_nest(struct nlmsghdr* n, size_t maxLen, rtattrtype_t type) {
+    return addattr_l(n, maxLen, type, nullptr, 0);
+}
+
+void addattr_nest_end(struct nlmsghdr* n, struct rtattr* nest) {
+    size_t nestLen = reinterpret_cast<uintptr_t>(nlmsg_tail(n)) - reinterpret_cast<uintptr_t>(nest);
+    nest->rta_len = nestLen;
+}
+
+}  // namespace android::netdevice::impl
diff --git a/automotive/can/1.0/default/libnetdevice/NetlinkRequest.h b/automotive/can/1.0/default/libnetdevice/NetlinkRequest.h
new file mode 100644
index 0000000..3e28d78
--- /dev/null
+++ b/automotive/can/1.0/default/libnetdevice/NetlinkRequest.h
@@ -0,0 +1,153 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android-base/macros.h>
+#include <linux/rtnetlink.h>
+
+#include <string>
+
+namespace android::netdevice {
+
+typedef unsigned short rtattrtype_t;  // as in rtnetlink.h
+typedef __u16 nlmsgtype_t;            // as in netlink.h
+
+/** Implementation details, do not use outside NetlinkRequest template. */
+namespace impl {
+
+struct rtattr* addattr_l(struct nlmsghdr* n, size_t maxLen, rtattrtype_t type, const void* data,
+                         size_t dataLen);
+struct rtattr* addattr_nest(struct nlmsghdr* n, size_t maxLen, rtattrtype_t type);
+void addattr_nest_end(struct nlmsghdr* n, struct rtattr* nest);
+
+}  // namespace impl
+
+/**
+ * Wrapper around NETLINK_ROUTE messages, to build them in C++ style.
+ *
+ * \param T specific message header (such as struct ifinfomsg)
+ * \param BUFSIZE how much space to reserve for payload (not counting the header size)
+ */
+template <class T, unsigned int BUFSIZE = 128>
+struct NetlinkRequest {
+    /**
+     * Create empty message.
+     *
+     * \param type Message type (such as RTM_NEWLINK)
+     * \param flags Message flags (such as NLM_F_REQUEST)
+     */
+    NetlinkRequest(nlmsgtype_t type, uint16_t flags) {
+        mRequest.nlmsg.nlmsg_len = NLMSG_LENGTH(sizeof(mRequest.data));
+        mRequest.nlmsg.nlmsg_type = type;
+        mRequest.nlmsg.nlmsg_flags = flags;
+    }
+
+    /** \return pointer to raw netlink message header. */
+    struct nlmsghdr* header() {
+        return &mRequest.nlmsg;
+    }
+    /** Reference to message-specific header. */
+    T& data() { return mRequest.data; }
+
+    /**
+     * Adds an attribute of a simple type.
+     *
+     * If this method fails (i.e. due to insufficient space), the message will be marked
+     * as bad (\see isGood).
+     *
+     * \param type attribute type (such as IFLA_IFNAME)
+     * \param attr attribute data
+     */
+    template <class A>
+    void addattr(rtattrtype_t type, const A& attr) {
+        if (!mIsGood) return;
+        auto ap = impl::addattr_l(&mRequest.nlmsg, sizeof(mRequest), type, &attr, sizeof(attr));
+        if (ap == nullptr) mIsGood = false;
+    }
+
+    template <>
+    void addattr(rtattrtype_t type, const std::string& s) {
+        if (!mIsGood) return;
+        auto ap = impl::addattr_l(&mRequest.nlmsg, sizeof(mRequest), type, s.c_str(), s.size() + 1);
+        if (ap == nullptr) mIsGood = false;
+    }
+
+    /** Guard class to frame nested attributes. See nest(int). */
+    struct Nest {
+        Nest(NetlinkRequest& req, rtattrtype_t type) : mReq(req), mAttr(req.nestStart(type)) {}
+        ~Nest() { mReq.nestEnd(mAttr); }
+
+      private:
+        NetlinkRequest& mReq;
+        struct rtattr* mAttr;
+
+        DISALLOW_COPY_AND_ASSIGN(Nest);
+    };
+
+    /**
+     * Add nested attribute.
+     *
+     * The returned object is a guard for auto-nesting children inside the argument attribute.
+     * When the Nest object goes out of scope, the nesting attribute is closed.
+     *
+     * Example usage nesting IFLA_CAN_BITTIMING inside IFLA_INFO_DATA, which is nested
+     * inside IFLA_LINKINFO:
+     *    NetlinkRequest<struct ifinfomsg> req(RTM_NEWLINK, NLM_F_REQUEST);
+     *    {
+     *        auto linkinfo = req.nest(IFLA_LINKINFO);
+     *        req.addattr(IFLA_INFO_KIND, "can");
+     *        {
+     *            auto infodata = req.nest(IFLA_INFO_DATA);
+     *            req.addattr(IFLA_CAN_BITTIMING, bitTimingStruct);
+     *        }
+     *    }
+     *    // use req
+     *
+     * \param type attribute type (such as IFLA_LINKINFO)
+     */
+    Nest nest(int type) { return Nest(*this, type); }
+
+    /**
+     * Indicates, whether the message is in a good state.
+     *
+     * The bad state is usually a result of payload buffer being too small.
+     * You can modify BUFSIZE template parameter to fix this.
+     */
+    bool isGood() const { return mIsGood; }
+
+  private:
+    bool mIsGood = true;
+
+    struct {
+        struct nlmsghdr nlmsg;
+        T data;
+        char buf[BUFSIZE];
+    } mRequest = {};
+
+    struct rtattr* nestStart(rtattrtype_t type) {
+        if (!mIsGood) return nullptr;
+        auto attr = impl::addattr_nest(&mRequest.nlmsg, sizeof(mRequest), type);
+        if (attr == nullptr) mIsGood = false;
+        return attr;
+    }
+
+    void nestEnd(struct rtattr* nest) {
+        if (mIsGood && nest != nullptr) impl::addattr_nest_end(&mRequest.nlmsg, nest);
+    }
+};
+
+}  // namespace android::netdevice
diff --git a/automotive/can/1.0/default/libnetdevice/NetlinkSocket.cpp b/automotive/can/1.0/default/libnetdevice/NetlinkSocket.cpp
new file mode 100644
index 0000000..6a7f506
--- /dev/null
+++ b/automotive/can/1.0/default/libnetdevice/NetlinkSocket.cpp
@@ -0,0 +1,112 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "NetlinkSocket.h"
+
+#include <android-base/logging.h>
+
+namespace android::netdevice {
+
+NetlinkSocket::NetlinkSocket(int protocol) {
+    mFd.reset(socket(AF_NETLINK, SOCK_RAW, protocol));
+    if (!mFd.ok()) {
+        LOG(ERROR) << "Can't open Netlink socket: " << errno;
+        mFailed = true;
+        return;
+    }
+
+    struct sockaddr_nl sa = {};
+    sa.nl_family = AF_NETLINK;
+
+    if (bind(mFd.get(), reinterpret_cast<struct sockaddr*>(&sa), sizeof(sa)) < 0) {
+        LOG(ERROR) << "Can't bind Netlink socket: " << errno;
+        mFd.reset();
+        mFailed = true;
+    }
+}
+
+bool NetlinkSocket::send(struct nlmsghdr* nlmsg) {
+    if (mFailed) return false;
+
+    nlmsg->nlmsg_pid = 0;  // kernel
+    nlmsg->nlmsg_seq = mSeq++;
+    nlmsg->nlmsg_flags |= NLM_F_ACK;
+
+    struct iovec iov = {nlmsg, nlmsg->nlmsg_len};
+
+    struct sockaddr_nl sa = {};
+    sa.nl_family = AF_NETLINK;
+
+    struct msghdr msg = {};
+    msg.msg_name = &sa;
+    msg.msg_namelen = sizeof(sa);
+    msg.msg_iov = &iov;
+    msg.msg_iovlen = 1;
+
+    if (sendmsg(mFd.get(), &msg, 0) < 0) {
+        LOG(ERROR) << "Can't send Netlink message: " << errno;
+        return false;
+    }
+    return true;
+}
+
+bool NetlinkSocket::receiveAck() {
+    if (mFailed) return false;
+
+    char buf[8192];
+
+    struct sockaddr_nl sa;
+    struct iovec iov = {buf, sizeof(buf)};
+
+    struct msghdr msg = {};
+    msg.msg_name = &sa;
+    msg.msg_namelen = sizeof(sa);
+    msg.msg_iov = &iov;
+    msg.msg_iovlen = 1;
+
+    const ssize_t status = recvmsg(mFd.get(), &msg, 0);
+    if (status < 0) {
+        LOG(ERROR) << "Failed to receive Netlink message: " << errno;
+        return false;
+    }
+    size_t remainingLen = status;
+
+    if (msg.msg_flags & MSG_TRUNC) {
+        LOG(ERROR) << "Failed to receive Netlink message: truncated";
+        return false;
+    }
+
+    for (auto nlmsg = reinterpret_cast<struct nlmsghdr*>(buf); NLMSG_OK(nlmsg, remainingLen);
+         nlmsg = NLMSG_NEXT(nlmsg, remainingLen)) {
+        // We're looking for error/ack message only, ignoring others.
+        if (nlmsg->nlmsg_type != NLMSG_ERROR) {
+            LOG(WARNING) << "Received unexpected Netlink message (ignored): " << nlmsg->nlmsg_type;
+            continue;
+        }
+
+        // Found error/ack message, return status.
+        auto nlerr = reinterpret_cast<struct nlmsgerr*>(NLMSG_DATA(nlmsg));
+        if (nlerr->error != 0) {
+            LOG(ERROR) << "Received Netlink error message: " << nlerr->error;
+            return false;
+        }
+        return true;
+    }
+    // Couldn't find any error/ack messages.
+    return false;
+}
+
+}  // namespace android::netdevice
diff --git a/automotive/can/1.0/default/libnetdevice/NetlinkSocket.h b/automotive/can/1.0/default/libnetdevice/NetlinkSocket.h
new file mode 100644
index 0000000..2b40ea2
--- /dev/null
+++ b/automotive/can/1.0/default/libnetdevice/NetlinkSocket.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "NetlinkRequest.h"
+
+#include <android-base/macros.h>
+#include <android-base/unique_fd.h>
+
+#include <linux/netlink.h>
+
+namespace android::netdevice {
+
+/**
+ * A wrapper around AF_NETLINK sockets.
+ *
+ * This class is not thread safe to use a single instance between multiple threads, but it's fine to
+ * use multiple instances over multiple threads.
+ */
+struct NetlinkSocket {
+    NetlinkSocket(int protocol);
+
+    /**
+     * Send Netlink message to Kernel.
+     *
+     * \param msg Message to send, nlmsg_seq will be set to next sequence number
+     * \return true, if succeeded
+     */
+    template <class T, unsigned int BUFSIZE>
+    bool send(NetlinkRequest<T, BUFSIZE>& req) {
+        if (!req.isGood()) return false;
+        return send(req.header());
+    }
+
+    /**
+     * Receive Netlink ACK message from Kernel.
+     *
+     * \return true if received ACK message, false in case of error
+     */
+    bool receiveAck();
+
+  private:
+    uint32_t mSeq = 0;
+    base::unique_fd mFd;
+    bool mFailed = false;
+
+    bool send(struct nlmsghdr* msg);
+
+    DISALLOW_COPY_AND_ASSIGN(NetlinkSocket);
+};
+
+}  // namespace android::netdevice
diff --git a/automotive/can/1.0/default/libnetdevice/can.cpp b/automotive/can/1.0/default/libnetdevice/can.cpp
new file mode 100644
index 0000000..06d45d3
--- /dev/null
+++ b/automotive/can/1.0/default/libnetdevice/can.cpp
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <libnetdevice/libnetdevice.h>
+
+#include "NetlinkRequest.h"
+#include "NetlinkSocket.h"
+#include "common.h"
+
+#include <android-base/logging.h>
+#include <android-base/unique_fd.h>
+
+#include <linux/can.h>
+#include <linux/can/error.h>
+#include <linux/can/netlink.h>
+#include <linux/can/raw.h>
+
+namespace android::netdevice::can {
+
+static constexpr can_err_mask_t kErrMask = CAN_ERR_MASK;
+
+base::unique_fd socket(const std::string& ifname) {
+    struct sockaddr_can addr = {};
+    addr.can_family = AF_CAN;
+    addr.can_ifindex = nametoindex(ifname);
+    if (addr.can_ifindex == 0) {
+        LOG(ERROR) << "Interface " << ifname << " doesn't exists";
+        return {};
+    }
+
+    base::unique_fd sock(::socket(PF_CAN, SOCK_RAW, CAN_RAW));
+    if (!sock.ok()) {
+        LOG(ERROR) << "Failed to create CAN socket";
+        return {};
+    }
+
+    if (setsockopt(sock.get(), SOL_CAN_RAW, CAN_RAW_ERR_FILTER, &kErrMask, sizeof(kErrMask)) < 0) {
+        LOG(ERROR) << "Can't receive error frames, CAN setsockpt failed: " << strerror(errno);
+        return {};
+    }
+
+    if (0 != fcntl(sock.get(), F_SETFL, O_RDWR | O_NONBLOCK)) {
+        LOG(ERROR) << "Couldn't put CAN socket in non-blocking mode";
+        return {};
+    }
+
+    if (0 != bind(sock.get(), reinterpret_cast<struct sockaddr*>(&addr), sizeof(addr))) {
+        LOG(ERROR) << "Can't bind to CAN interface " << ifname;
+        return {};
+    }
+
+    return sock;
+}
+
+bool setBitrate(std::string ifname, uint32_t bitrate) {
+    struct can_bittiming bt = {};
+    bt.bitrate = bitrate;
+
+    NetlinkRequest<struct ifinfomsg> req(RTM_NEWLINK, NLM_F_REQUEST);
+
+    const auto ifidx = nametoindex(ifname);
+    if (ifidx == 0) {
+        LOG(ERROR) << "Can't find interface " << ifname;
+        return false;
+    }
+    req.data().ifi_index = ifidx;
+
+    {
+        auto linkinfo = req.nest(IFLA_LINKINFO);
+        req.addattr(IFLA_INFO_KIND, "can");
+        {
+            auto infodata = req.nest(IFLA_INFO_DATA);
+            /* For CAN FD, it would require to add IFLA_CAN_DATA_BITTIMING
+             * and IFLA_CAN_CTRLMODE as well. */
+            req.addattr(IFLA_CAN_BITTIMING, bt);
+        }
+    }
+
+    NetlinkSocket sock(NETLINK_ROUTE);
+    return sock.send(req) && sock.receiveAck();
+}
+
+}  // namespace android::netdevice::can
diff --git a/automotive/can/1.0/default/libnetdevice/common.cpp b/automotive/can/1.0/default/libnetdevice/common.cpp
new file mode 100644
index 0000000..5c62443
--- /dev/null
+++ b/automotive/can/1.0/default/libnetdevice/common.cpp
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "common.h"
+
+#include <android-base/logging.h>
+
+#include <net/if.h>
+
+namespace android::netdevice {
+
+unsigned int nametoindex(const std::string& ifname) {
+    const auto ifidx = if_nametoindex(ifname.c_str());
+    if (ifidx != 0) return ifidx;
+
+    const auto err = errno;
+    if (err != ENODEV) {
+        LOG(ERROR) << "if_nametoindex(" << ifname << ") failed: " << err;
+    }
+    return 0;
+}
+
+}  // namespace android::netdevice
diff --git a/automotive/can/1.0/default/libnetdevice/common.h b/automotive/can/1.0/default/libnetdevice/common.h
new file mode 100644
index 0000000..8097f37
--- /dev/null
+++ b/automotive/can/1.0/default/libnetdevice/common.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <string>
+
+namespace android::netdevice {
+
+/**
+ * Returns the index of a given network interface.
+ *
+ * If the syscall to check the index fails with other error than ENODEV, it gets logged and the
+ * return value indicates the interface doesn't exists.
+ *
+ * \param ifname Interface to check
+ * \return Interface index, or 0 if the interface doesn't exist
+ */
+unsigned int nametoindex(const std::string& ifname);
+
+}  // namespace android::netdevice
diff --git a/automotive/can/1.0/default/libnetdevice/include/libnetdevice/can.h b/automotive/can/1.0/default/libnetdevice/include/libnetdevice/can.h
new file mode 100644
index 0000000..3886acf
--- /dev/null
+++ b/automotive/can/1.0/default/libnetdevice/include/libnetdevice/can.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android-base/unique_fd.h>
+
+#include <string>
+
+namespace android::netdevice::can {
+
+/**
+ * Opens and binds SocketCAN socket.
+ *
+ * \param ifname Interface to open a socket against
+ * \return Socket's FD or -1 in case of failure
+ */
+base::unique_fd socket(const std::string& ifname);
+
+/**
+ * Sets CAN interface bitrate.
+ *
+ * \param ifname Interface for which the bitrate is to be set
+ * \return true on success, false on failure
+ */
+bool setBitrate(std::string ifname, uint32_t bitrate);
+
+}  // namespace android::netdevice::can
diff --git a/automotive/can/1.0/default/libnetdevice/include/libnetdevice/libnetdevice.h b/automotive/can/1.0/default/libnetdevice/include/libnetdevice/libnetdevice.h
new file mode 100644
index 0000000..3818a31
--- /dev/null
+++ b/automotive/can/1.0/default/libnetdevice/include/libnetdevice/libnetdevice.h
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <optional>
+#include <string>
+
+namespace android::netdevice {
+
+/**
+ * Checks, if the network interface exists.
+ *
+ * \param ifname Interface to check
+ * \return true if it exists, false otherwise
+ */
+bool exists(std::string ifname);
+
+/**
+ * Checks if network interface is up.
+ *
+ * \param ifname Interface to check
+ * \return true/false if the check succeeded, nullopt otherwise
+ */
+std::optional<bool> isUp(std::string ifname);
+
+/**
+ * Brings network interface up.
+ *
+ * \param ifname Interface to bring up
+ * \return true in case of success, false otherwise
+ */
+bool up(std::string ifname);
+
+/**
+ * Brings network interface down.
+ *
+ * \param ifname Interface to bring down
+ * \return true in case of success, false otherwise
+ */
+bool down(std::string ifname);
+
+/**
+ * Adds virtual link.
+ *
+ * \param dev the name of the new virtual device
+ * \param type the type of the new device
+ * \return true in case of success, false otherwise
+ */
+bool add(std::string dev, std::string type);
+
+/**
+ * Deletes virtual link.
+ *
+ * \param dev the name of the device to remove
+ * \return true in case of success, false otherwise
+ */
+bool del(std::string dev);
+
+}  // namespace android::netdevice
diff --git a/automotive/can/1.0/default/libnetdevice/libnetdevice.cpp b/automotive/can/1.0/default/libnetdevice/libnetdevice.cpp
new file mode 100644
index 0000000..aee8205
--- /dev/null
+++ b/automotive/can/1.0/default/libnetdevice/libnetdevice.cpp
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <libnetdevice/libnetdevice.h>
+
+#include "NetlinkRequest.h"
+#include "NetlinkSocket.h"
+#include "common.h"
+
+#include <android-base/logging.h>
+
+#include <linux/can.h>
+#include <net/if.h>
+
+namespace android::netdevice {
+
+bool exists(std::string ifname) {
+    return nametoindex(ifname) != 0;
+}
+
+static bool sendIfreq(unsigned long request, struct ifreq& ifr) {
+    /* For general interfaces it would be socket(AF_INET, SOCK_DGRAM, 0),
+     * but SEPolicy forces us to limit our flexibility here. */
+    base::unique_fd sock(socket(PF_CAN, SOCK_RAW, CAN_RAW));
+    if (!sock.ok()) {
+        LOG(ERROR) << "Can't create socket";
+        return false;
+    }
+
+    if (ioctl(sock.get(), request, &ifr) < 0) {
+        LOG(ERROR) << "ioctl(" << std::hex << request << std::dec << ") failed: " << errno;
+        return false;
+    }
+
+    return true;
+}
+
+static struct ifreq ifreqFromName(const std::string& ifname) {
+    struct ifreq ifr = {};
+    strlcpy(ifr.ifr_name, ifname.c_str(), IF_NAMESIZE);
+    return ifr;
+}
+
+std::optional<bool> isUp(std::string ifname) {
+    struct ifreq ifr = ifreqFromName(ifname);
+    if (!sendIfreq(SIOCGIFFLAGS, ifr)) return std::nullopt;
+    return ifr.ifr_flags & IFF_UP;
+}
+
+bool up(std::string ifname) {
+    struct ifreq ifr = ifreqFromName(ifname);
+    if (!sendIfreq(SIOCGIFFLAGS, ifr)) return false;
+    ifr.ifr_flags |= IFF_UP;
+    return sendIfreq(SIOCSIFFLAGS, ifr);
+}
+
+bool down(std::string ifname) {
+    struct ifreq ifr = ifreqFromName(ifname);
+    if (!sendIfreq(SIOCGIFFLAGS, ifr)) return false;
+    ifr.ifr_flags &= ~IFF_UP;
+    return sendIfreq(SIOCSIFFLAGS, ifr);
+}
+
+bool add(std::string dev, std::string type) {
+    NetlinkRequest<struct ifinfomsg> req(RTM_NEWLINK, NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL);
+    req.addattr(IFLA_IFNAME, dev);
+
+    {
+        auto linkinfo = req.nest(IFLA_LINKINFO);
+        req.addattr(IFLA_INFO_KIND, type);
+    }
+
+    NetlinkSocket sock(NETLINK_ROUTE);
+    return sock.send(req) && sock.receiveAck();
+}
+
+bool del(std::string dev) {
+    NetlinkRequest<struct ifinfomsg> req(RTM_DELLINK, NLM_F_REQUEST);
+    req.addattr(IFLA_IFNAME, dev);
+
+    NetlinkSocket sock(NETLINK_ROUTE);
+    return sock.send(req) && sock.receiveAck();
+}
+
+}  // namespace android::netdevice
diff --git a/automotive/can/1.0/default/service.cpp b/automotive/can/1.0/default/service.cpp
new file mode 100644
index 0000000..b52a54a
--- /dev/null
+++ b/automotive/can/1.0/default/service.cpp
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "CanController.h"
+
+#include <android-base/logging.h>
+#include <hidl/HidlTransportSupport.h>
+
+namespace android::hardware::automotive::can::V1_0::implementation {
+
+static void canControllerService() {
+    base::SetDefaultTag("CanController");
+    base::SetMinimumLogSeverity(android::base::VERBOSE);
+    configureRpcThreadpool(16, true);
+    LOG(DEBUG) << "CAN controller service starting...";
+
+    sp<CanController> canController(new CanController);
+    if (canController->registerAsService("socketcan") != OK) {
+        LOG(FATAL) << "Failed to register CAN controller";
+        return;
+    }
+
+    LOG(INFO) << "CAN controller service ready";
+    joinRpcThreadpool();
+}
+
+}  // namespace android::hardware::automotive::can::V1_0::implementation
+
+int main() {
+    ::android::hardware::automotive::can::V1_0::implementation::canControllerService();
+    return 1;  // canBusService (joinRpcThreadpool) shouldn't exit
+}
diff --git a/automotive/can/1.0/hidl-utils/Android.bp b/automotive/can/1.0/hidl-utils/Android.bp
new file mode 100644
index 0000000..63b07c9
--- /dev/null
+++ b/automotive/can/1.0/hidl-utils/Android.bp
@@ -0,0 +1,21 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_library_headers {
+    name: "android.hardware.automotive.can@hidl-utils-lib",
+    export_include_dirs: ["include"],
+    vendor_available: true,
+}
diff --git a/automotive/can/1.0/hidl-utils/include/hidl-utils/hidl-utils.h b/automotive/can/1.0/hidl-utils/include/hidl-utils/hidl-utils.h
new file mode 100644
index 0000000..f63d43c
--- /dev/null
+++ b/automotive/can/1.0/hidl-utils/include/hidl-utils/hidl-utils.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+namespace android::hardware::automotive::hidl_utils {
+
+/**
+ * Helper functor to fetch results from multi-return HIDL calls.
+ * It's meant to be used in place of _hidl_cb callbacks.
+ *
+ * Please note extracting these return variables outside of the callback scope requires making
+ * a copy of each return variable. This may be costly for frequently called HIDL methods with
+ * non-negligible return object size. Please be cautious about performance when using this.
+ *
+ * Example usage:
+ *     Result result;
+ *     sp<ISomeInterface> iface;
+ *     hidlObject->someMethod(arg1, arg2, hidl_utils::fill(&result, &iface)).assertOk();
+ *     // use result and iface
+ */
+template <typename... T>
+struct fill : public std::function<void(const T&...)> {
+    /**
+     * Create _hidl_cb functor that copies the call arguments to specified pointers.
+     *
+     * \param args... Targets to copy the call arguments to
+     */
+    fill(T*... args) : mTargets(args...) {}
+
+    void operator()(const T&... args) { copy<0, T...>(args...); }
+
+  private:
+    std::tuple<T*...> mTargets;
+
+    template <int Pos, typename First>
+    inline void copy(const First& first) {
+        *std::get<Pos>(mTargets) = first;
+    }
+
+    template <int Pos, typename First, typename... Rest>
+    inline void copy(const First& first, const Rest&... rest) {
+        *std::get<Pos>(mTargets) = first;
+        copy<Pos + 1, Rest...>(rest...);
+    }
+};
+
+}  // namespace android::hardware::automotive::hidl_utils
diff --git a/automotive/can/1.0/tools/Android.bp b/automotive/can/1.0/tools/Android.bp
new file mode 100644
index 0000000..21f364b
--- /dev/null
+++ b/automotive/can/1.0/tools/Android.bp
@@ -0,0 +1,57 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_binary {
+    name: "canhalctrl",
+    defaults: ["android.hardware.automotive.can@defaults"],
+    srcs: [
+        "canhalctrl.cpp",
+    ],
+    shared_libs: [
+        "android.hardware.automotive.can@1.0",
+        "libhidlbase",
+    ],
+    header_libs: [
+        "android.hardware.automotive.can@hidl-utils-lib",
+    ],
+}
+
+cc_binary {
+    name: "canhaldump",
+    defaults: ["android.hardware.automotive.can@defaults"],
+    srcs: [
+        "canhaldump.cpp",
+    ],
+    shared_libs: [
+        "android.hardware.automotive.can@1.0",
+        "libhidlbase",
+    ],
+    header_libs: [
+        "android.hardware.automotive.can@hidl-utils-lib",
+    ],
+}
+
+cc_binary {
+    name: "canhalsend",
+    defaults: ["android.hardware.automotive.can@defaults"],
+    srcs: [
+        "canhalsend.cpp",
+    ],
+    shared_libs: [
+        "android.hardware.automotive.can@1.0",
+        "libhidlbase",
+    ],
+}
diff --git a/automotive/can/1.0/tools/canhalctrl.cpp b/automotive/can/1.0/tools/canhalctrl.cpp
new file mode 100644
index 0000000..5494ba3
--- /dev/null
+++ b/automotive/can/1.0/tools/canhalctrl.cpp
@@ -0,0 +1,175 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android/hardware/automotive/can/1.0/ICanController.h>
+#include <android/hidl/manager/1.2/IServiceManager.h>
+#include <hidl-utils/hidl-utils.h>
+
+#include <iostream>
+#include <string>
+
+namespace android::hardware::automotive::can {
+
+using ICanController = V1_0::ICanController;
+
+static void usage() {
+    std::cerr << "CAN bus HAL Control tool" << std::endl;
+    std::cerr << std::endl << "usage:" << std::endl << std::endl;
+    std::cerr << "canhalctrl up <bus name> <type> <interface> [bitrate]" << std::endl;
+    std::cerr << "where:" << std::endl;
+    std::cerr << " bus name - name under which ICanBus will be published" << std::endl;
+    std::cerr << " type - one of: virtual, socketcan, slcan, indexed" << std::endl;
+    std::cerr << " interface - hardware identifier (like can0, vcan0, /dev/ttyUSB0)" << std::endl;
+    std::cerr << " bitrate - such as 100000, 125000, 250000, 500000" << std::endl;
+    std::cerr << std::endl;
+    std::cerr << "canhalctrl down <bus name>" << std::endl;
+    std::cerr << "where:" << std::endl;
+    std::cerr << " bus name - name under which ICanBus will be published" << std::endl;
+}
+
+static hidl_vec<hidl_string> getControlServices() {
+    auto manager = hidl::manager::V1_2::IServiceManager::getService();
+    hidl_vec<hidl_string> services;
+    manager->listManifestByInterface(ICanController::descriptor, hidl_utils::fill(&services));
+    if (services.size() == 0) {
+        std::cerr << "No ICanController services registered (missing privileges?)" << std::endl;
+        exit(-1);
+    }
+    return services;
+}
+
+static bool isSupported(sp<ICanController> ctrl, ICanController::InterfaceType iftype) {
+    hidl_vec<ICanController::InterfaceType> supported;
+    if (!ctrl->getSupportedInterfaceTypes(hidl_utils::fill(&supported)).isOk()) return false;
+    return supported.contains(iftype);
+}
+
+static int up(const std::string& busName, ICanController::InterfaceType type,
+              const std::string& interface, uint32_t bitrate) {
+    bool anySupported = false;
+    for (auto&& service : getControlServices()) {
+        auto ctrl = ICanController::getService(service);
+        if (ctrl == nullptr) {
+            std::cerr << "Couldn't open ICanController/" << service;
+            continue;
+        }
+
+        if (!isSupported(ctrl, type)) continue;
+        anySupported = true;
+
+        ICanController::BusConfiguration config = {};
+        config.name = busName;
+        config.iftype = type;
+        config.bitrate = bitrate;
+
+        if (type == ICanController::InterfaceType::INDEXED) {
+            config.interfaceId.index(std::stol(interface));
+        } else {
+            config.interfaceId.address(interface);
+        }
+
+        const auto upresult = ctrl->upInterface(config);
+        if (upresult == ICanController::Result::OK) return 0;
+        std::cerr << "Failed to bring interface up: " << toString(upresult) << std::endl;
+        // Let's continue the loop to try other controllers.
+    }
+
+    if (!anySupported) {
+        std::cerr << "No controller supports " << toString(type) << std::endl;
+    }
+    return -1;
+}
+
+static int down(const std::string& busName) {
+    for (auto&& service : getControlServices()) {
+        auto ctrl = ICanController::getService(service);
+        if (ctrl == nullptr) continue;
+
+        if (ctrl->downInterface(busName)) return 0;
+    }
+
+    std::cerr << "Failed to bring interface " << busName << " down (maybe it's down already?)"
+              << std::endl;
+    return -1;
+}
+
+static std::optional<ICanController::InterfaceType> parseInterfaceType(const std::string& str) {
+    if (str == "virtual") return ICanController::InterfaceType::VIRTUAL;
+    if (str == "socketcan") return ICanController::InterfaceType::SOCKETCAN;
+    if (str == "slcan") return ICanController::InterfaceType::SLCAN;
+    if (str == "indexed") return ICanController::InterfaceType::INDEXED;
+    return std::nullopt;
+}
+
+static int main(int argc, char* argv[]) {
+    base::SetDefaultTag("CanHalControl");
+    base::SetMinimumLogSeverity(android::base::VERBOSE);
+
+    if (argc == 0) {
+        usage();
+        return 0;
+    }
+
+    std::string cmd(argv[0]);
+    argv++;
+    argc--;
+
+    if (cmd == "up") {
+        if (argc < 3 || argc > 4) {
+            std::cerr << "Invalid number of arguments to up command: " << argc << std::endl;
+            usage();
+            return -1;
+        }
+
+        const std::string busName(argv[0]);
+        const std::string typeStr(argv[1]);
+        const std::string interface(argv[2]);
+
+        const auto type = parseInterfaceType(typeStr);
+        if (!type) {
+            std::cerr << "Invalid interface type: " << typeStr << std::endl;
+            usage();
+            return -1;
+        }
+
+        long long bitrate = 0;
+        if (argc == 4) {
+            bitrate = std::stoll(argv[3]);
+        }
+
+        return up(busName, *type, interface, bitrate);
+    } else if (cmd == "down") {
+        if (argc != 1) {
+            std::cerr << "Invalid number of arguments to down command: " << argc << std::endl;
+            usage();
+            return -1;
+        }
+
+        return down(argv[0]);
+    } else {
+        std::cerr << "Invalid command: " << cmd << std::endl;
+        usage();
+        return -1;
+    }
+}
+
+}  // namespace android::hardware::automotive::can
+
+int main(int argc, char* argv[]) {
+    if (argc < 1) return -1;
+    return ::android::hardware::automotive::can::main(--argc, ++argv);
+}
diff --git a/automotive/can/1.0/tools/canhaldump.cpp b/automotive/can/1.0/tools/canhaldump.cpp
new file mode 100644
index 0000000..2f5ca61
--- /dev/null
+++ b/automotive/can/1.0/tools/canhaldump.cpp
@@ -0,0 +1,133 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android/hardware/automotive/can/1.0/ICanBus.h>
+#include <android/hardware/automotive/can/1.0/ICanMessageListener.h>
+#include <android/hidl/manager/1.2/IServiceManager.h>
+#include <hidl-utils/hidl-utils.h>
+
+#include <linux/can.h>
+#include <chrono>
+#include <iomanip>
+#include <iostream>
+#include <string>
+#include <thread>
+
+namespace android::hardware::automotive::can {
+
+using namespace std::chrono_literals;
+
+using ICanBus = V1_0::ICanBus;
+using Result = V1_0::Result;
+
+struct CanMessageListener : public V1_0::ICanMessageListener {
+    const std::string name;
+
+    CanMessageListener(std::string name) : name(name) {}
+
+    virtual Return<void> onReceive(const V1_0::CanMessage& message) {
+        int msgIdWidth = 3;
+        if (message.isExtendedId) msgIdWidth = 8;
+        std::cout << "  " << name << "  " << std::hex << std::uppercase << std::setw(msgIdWidth)
+                  << std::setfill('0') << message.id << std::setw(0);
+        std::cout << "   [" << message.payload.size() << "] ";
+        if (message.remoteTransmissionRequest) {
+            std::cout << "remote request";
+        } else {
+            for (const auto byte : message.payload) {
+                std::cout << " " << std::setfill('0') << std::setw(2) << unsigned(byte);
+            }
+        }
+        std::cout << std::nouppercase << std::dec << std::endl;
+        return {};
+    }
+
+    virtual Return<void> onError(V1_0::ErrorEvent error) {
+        std::cout << "  " << name << "  " << toString(error) << std::endl;
+        return {};
+    }
+};
+
+static void usage() {
+    std::cerr << "canhaldump - dump CAN bus traffic" << std::endl;
+    std::cerr << std::endl << "usage:" << std::endl << std::endl;
+    std::cerr << "canhaldump <bus name>" << std::endl;
+    std::cerr << "where:" << std::endl;
+    std::cerr << " bus name - name under which ICanBus is be published" << std::endl;
+}
+
+// TODO(b/135918744): extract to a new library
+static sp<ICanBus> tryOpen(const std::string& busname) {
+    auto bus = ICanBus::tryGetService(busname);
+    if (bus != nullptr) return bus;
+
+    /* Fallback for interfaces not registered in manifest. For testing purposes only,
+     * one should not depend on this in production deployment. */
+    auto manager = hidl::manager::V1_2::IServiceManager::getService();
+    auto ret = manager->get(ICanBus::descriptor, busname).withDefault(nullptr);
+    if (ret == nullptr) return nullptr;
+
+    std::cerr << "WARNING: bus " << busname << " is not registered in device manifest, "
+              << "trying to fetch it directly..." << std::endl;
+
+    return ICanBus::castFrom(ret);
+}
+
+static int candump(const std::string& busname) {
+    auto bus = tryOpen(busname);
+    if (bus == nullptr) {
+        std::cerr << "Bus " << busname << " is not available" << std::endl;
+        return -1;
+    }
+
+    Result result;
+    sp<V1_0::ICloseHandle> chnd;
+    // TODO(b/135918744): extract to library
+    bus->listen({}, new CanMessageListener(busname), hidl_utils::fill(&result, &chnd)).assertOk();
+
+    if (result != Result::OK) {
+        std::cerr << "Listen call failed: " << toString(result) << std::endl;
+        return -1;
+    }
+
+    while (true) std::this_thread::sleep_for(1h);
+}
+
+static int main(int argc, char* argv[]) {
+    base::SetDefaultTag("CanHalDump");
+    base::SetMinimumLogSeverity(android::base::VERBOSE);
+
+    if (argc == 0) {
+        usage();
+        return 0;
+    }
+
+    if (argc != 1) {
+        std::cerr << "Invalid number of arguments" << std::endl;
+        usage();
+        return -1;
+    }
+
+    return candump(argv[0]);
+}
+
+}  // namespace android::hardware::automotive::can
+
+int main(int argc, char* argv[]) {
+    if (argc < 1) return -1;
+    return ::android::hardware::automotive::can::main(--argc, ++argv);
+}
diff --git a/automotive/can/1.0/tools/canhalsend.cpp b/automotive/can/1.0/tools/canhalsend.cpp
new file mode 100644
index 0000000..7e6833a
--- /dev/null
+++ b/automotive/can/1.0/tools/canhalsend.cpp
@@ -0,0 +1,130 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android/hardware/automotive/can/1.0/ICanBus.h>
+#include <android/hidl/manager/1.2/IServiceManager.h>
+
+#include <iostream>
+#include <string>
+
+namespace android::hardware::automotive::can {
+
+using ICanBus = V1_0::ICanBus;
+using Result = V1_0::Result;
+
+static void usage() {
+    std::cerr << "cansend - simple command line tool to send raw CAN frames" << std::endl;
+    std::cerr << std::endl << "usage:" << std::endl << std::endl;
+    std::cerr << "canhalsend <bus name> <can id>#<data>" << std::endl;
+    std::cerr << "where:" << std::endl;
+    std::cerr << " bus name - name under which ICanBus is be published" << std::endl;
+    std::cerr << " can id - such as 1a5" << std::endl;
+    std::cerr << " data - such as deadbeef or 010203" << std::endl;
+}
+
+// TODO(b/135918744): extract to a new library
+static sp<ICanBus> tryOpen(const std::string& busname) {
+    auto bus = ICanBus::tryGetService(busname);
+    if (bus != nullptr) return bus;
+
+    /* Fallback for interfaces not registered in manifest. For testing purposes only,
+     * one should not depend on this in production deployment. */
+    auto manager = hidl::manager::V1_2::IServiceManager::getService();
+    auto ret = manager->get(ICanBus::descriptor, busname).withDefault(nullptr);
+    if (ret == nullptr) return nullptr;
+
+    std::cerr << "WARNING: bus " << busname << " is not registered in device manifest, "
+              << "trying to fetch it directly..." << std::endl;
+
+    return ICanBus::castFrom(ret);
+}
+
+static int cansend(const std::string& busname, V1_0::CanMessageId msgid,
+                   std::vector<uint8_t> payload) {
+    auto bus = tryOpen(busname);
+    if (bus == nullptr) {
+        std::cerr << "Bus " << busname << " is not available" << std::endl;
+        return -1;
+    }
+
+    V1_0::CanMessage msg = {};
+    msg.id = msgid;
+    msg.payload = payload;
+
+    const auto result = bus->send(msg);
+    if (result != Result::OK) {
+        std::cerr << "Send call failed: " << toString(result) << std::endl;
+        return -1;
+    }
+    return 0;
+}
+
+static std::optional<std::tuple<V1_0::CanMessageId, std::vector<uint8_t>>> parseCanMessage(
+        const std::string& msg) {
+    const auto hashpos = msg.find("#");
+    if (hashpos == std::string::npos) return std::nullopt;
+
+    const std::string msgidStr = msg.substr(0, hashpos);
+    const std::string payloadStr = msg.substr(hashpos + 1);
+
+    size_t idx = 0;
+    V1_0::CanMessageId msgid = std::stoi(msgidStr, &idx, 16);
+    if (msgidStr[idx] != '\0') return std::nullopt;
+
+    std::vector<uint8_t> payload;
+    if (payloadStr.size() % 2 != 0) return std::nullopt;
+    for (size_t i = 0; i < payloadStr.size(); i += 2) {
+        std::string byteStr(payloadStr, i, 2);
+        payload.emplace_back(std::stoi(byteStr, &idx, 16));
+        if (byteStr[idx] != '\0') return std::nullopt;
+    }
+
+    return {{msgid, payload}};
+}
+
+static int main(int argc, char* argv[]) {
+    base::SetDefaultTag("CanHalSend");
+    base::SetMinimumLogSeverity(android::base::VERBOSE);
+
+    if (argc == 0) {
+        usage();
+        return 0;
+    }
+
+    if (argc != 2) {
+        std::cerr << "Invalid number of arguments" << std::endl;
+        usage();
+        return -1;
+    }
+
+    std::string busname(argv[0]);
+    const auto canmsg = parseCanMessage(argv[1]);
+    if (!canmsg) {
+        std::cerr << "Failed to parse CAN message argument" << std::endl;
+        return -1;
+    }
+    const auto [msgid, payload] = *canmsg;
+
+    return cansend(busname, msgid, payload);
+}
+
+}  // namespace android::hardware::automotive::can
+
+int main(int argc, char* argv[]) {
+    if (argc < 1) return -1;
+    return ::android::hardware::automotive::can::main(--argc, ++argv);
+}
diff --git a/automotive/can/1.0/types.hal b/automotive/can/1.0/types.hal
new file mode 100644
index 0000000..5eeed53
--- /dev/null
+++ b/automotive/can/1.0/types.hal
@@ -0,0 +1,142 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.hardware.automotive.can@1.0;
+
+/**
+ * CAN message ID.
+ *
+ * Does not include any flags like RTR nor ERR, only a plain 11-bit
+ * or 29-bit identifier, as defined in CAN 1.x/2.0x.
+ *
+ * Unused bits must be set to zero.
+ */
+typedef uint32_t CanMessageId;
+
+/**
+ * CAN message being sent or received.
+ */
+struct CanMessage {
+    CanMessageId id;
+
+    /**
+     * CAN message payload, as defined in CAN 1.x and CAN 2.x standards.
+     *
+     * The length of the payload vector directly translates to the length
+     * of the data frame (i.e. includes any padding bytes), so it may be in
+     * a range of:
+     *  - 0-8 bytes for standard CAN;
+     *  - up to 64 bytes for CAN FD.
+     * ISO TP is not supported directly for now.
+     */
+    vec<uint8_t> payload;
+
+    /**
+     * Time in nanoseconds since boot.
+     *
+     * Ignored for outgoing messages.
+     */
+    uint64_t timestamp;
+
+    /**
+     * A request to proactively pull certain data from other ECU in CAN network.
+     *
+     * For details please refer to CAN standard.
+     *
+     * If this flag is set, payload must be empty.
+     */
+    bool remoteTransmissionRequest;
+
+    /**
+     * Flag indicating if the message has an extended ID.
+     *
+     * Extended ID's are 29 bits long, as opposed to the standard 11 bit ID.
+     * It can not simply be inferred from the length of the ID itself, as the
+     * message ID 0x00000123 !=  message ID 0x123.
+     */
+    bool isExtendedId;
+};
+
+/**
+ * Single filter rule for CAN messages.
+ *
+ * A filter is satisfied if:
+ * ((receivedId & mask) == (id & mask)) == !exclude
+ *
+ * In order for set of filters to match, at least one non-exclude filters must match (if there is
+ * one) and all exclude filters must match. In other words:
+ *  - a single matching non-exclude filter makes the whole set matching;
+ *  - a single non-matching excluded filter makes the whole set non-matching.
+ */
+struct CanMessageFilter {
+    CanMessageId id;
+    uint32_t mask;
+    /** Remote Transmission Request; another ECU requests <DLC> bytes of data on this message ID */
+    FilterFlag rtr;
+    /** 29 bit message ID is used instead of 11 bits */
+    FilterFlag extendedFormat;
+    /** 'exclude' *DOES* apply to rtr and extendedFormat! */
+    bool exclude;
+};
+
+
+/**
+ * Types of filter that can be applied to a CanMessageFilter
+ */
+enum FilterFlag : uint8_t {
+    /** Default, FilterFlag doesn't effect what messages filtered */
+    DONT_CARE = 0,
+    /** This FilterFlag MUST be present in received messages to pass though the filter */
+    SET,
+    /** This FilterFlag must NOT be present in received messages to pass though the filter */
+    NOT_SET,
+};
+
+enum Result : uint8_t {
+    OK,
+    UNKNOWN_ERROR,
+    PAYLOAD_TOO_LONG,
+    INTERFACE_DOWN,
+    TRANSMISSION_FAILURE,
+    INVALID_ARGUMENTS,
+};
+
+/**
+ * @see ICanMessageListener#onError
+ */
+enum ErrorEvent : uint8_t {
+    UNKNOWN_ERROR,
+
+    /** A problem with CAN interface HW. */
+    HARDWARE_ERROR,
+
+    /** CAN interface is down. */
+    INTERFACE_DOWN,
+
+    /** TX buffer overflow: client is sending too many packets. */
+    TX_OVERFLOW,
+
+    /** RX buffer overflow: client is not reading packets fast enough. */
+    RX_OVERFLOW,
+
+    /** Received malformed input. */
+    MALFORMED_INPUT,
+
+    /** Bus overload: there is too much traffic on the bus. */
+    BUS_OVERLOAD,
+
+    /** Bus error: shorted Hi/Lo line, bus off etc. */
+    BUS_ERROR,
+};
diff --git a/automotive/can/1.0/vts/functional/Android.bp b/automotive/can/1.0/vts/functional/Android.bp
new file mode 100644
index 0000000..e3e770b
--- /dev/null
+++ b/automotive/can/1.0/vts/functional/Android.bp
@@ -0,0 +1,50 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_defaults {
+    name: "android.hardware.automotive.can@vts-defaults",
+    defaults: [
+        "VtsHalTargetTestDefaults",
+        "android.hardware.automotive.can@defaults",
+    ],
+    header_libs: [
+        "android.hardware.automotive.can@hidl-utils-lib",
+    ],
+    static_libs: [
+        "android.hardware.automotive.can@1.0",
+        "android.hardware.automotive.can@vts-utils-lib",
+        "libgmock",
+    ],
+    test_suites: ["general-tests"],
+}
+
+cc_test {
+    name: "VtsHalCanControllerV1_0TargetTest",
+    defaults: ["android.hardware.automotive.can@vts-defaults"],
+    srcs: ["VtsHalCanControllerV1_0TargetTest.cpp"],
+}
+
+cc_test {
+    name: "VtsHalCanBusV1_0TargetTest",
+    defaults: ["android.hardware.automotive.can@vts-defaults"],
+    srcs: ["VtsHalCanBusV1_0TargetTest.cpp"],
+}
+
+cc_test {
+    name: "VtsHalCanBusVirtualV1_0TargetTest",
+    defaults: ["android.hardware.automotive.can@vts-defaults"],
+    srcs: ["VtsHalCanBusVirtualV1_0TargetTest.cpp"],
+}
diff --git a/automotive/can/1.0/vts/functional/VtsHalCanBusV1_0TargetTest.cpp b/automotive/can/1.0/vts/functional/VtsHalCanBusV1_0TargetTest.cpp
new file mode 100644
index 0000000..cdea8b6
--- /dev/null
+++ b/automotive/can/1.0/vts/functional/VtsHalCanBusV1_0TargetTest.cpp
@@ -0,0 +1,195 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <VtsHalHidlTargetTestBase.h>
+#include <android-base/logging.h>
+#include <android-base/strings.h>
+#include <android/hardware/automotive/can/1.0/ICanBus.h>
+#include <android/hardware/automotive/can/1.0/types.h>
+#include <can-vts-utils/can-hal-printers.h>
+#include <can-vts-utils/environment-utils.h>
+#include <gmock/gmock.h>
+#include <hidl-utils/hidl-utils.h>
+
+namespace android::hardware::automotive::can::V1_0::vts {
+
+using hardware::hidl_vec;
+
+static utils::SimpleHidlEnvironment<ICanBus>* gEnv = nullptr;
+
+struct CanMessageListener : public can::V1_0::ICanMessageListener {
+    virtual Return<void> onReceive(const can::V1_0::CanMessage&) override { return {}; }
+};
+
+struct CanErrorListener : public can::V1_0::ICanErrorListener {
+    virtual Return<void> onError(ErrorEvent, bool) override { return {}; }
+};
+
+class CanBusHalTest : public ::testing::VtsHalHidlTargetTestBase {
+  protected:
+    virtual void SetUp() override;
+    virtual void TearDown() override;
+
+    std::tuple<Result, sp<ICloseHandle>> listen(const hidl_vec<CanMessageFilter>& filter,
+                                                const sp<ICanMessageListener>& listener);
+    sp<ICloseHandle> listenForErrors(const sp<ICanErrorListener>& listener);
+
+    sp<ICanBus> mCanBus;
+};
+
+void CanBusHalTest::SetUp() {
+    const auto serviceName = gEnv->getServiceName<ICanBus>();
+    mCanBus = getService<ICanBus>(serviceName);
+    ASSERT_TRUE(mCanBus) << "Couldn't open CAN Bus: " << serviceName;
+}
+
+void CanBusHalTest::TearDown() {
+    mCanBus.clear();
+}
+
+std::tuple<Result, sp<ICloseHandle>> CanBusHalTest::listen(
+        const hidl_vec<CanMessageFilter>& filter, const sp<ICanMessageListener>& listener) {
+    Result halResult;
+    sp<ICloseHandle> closeHandle;
+    mCanBus->listen(filter, listener, hidl_utils::fill(&halResult, &closeHandle)).assertOk();
+
+    return {halResult, closeHandle};
+}
+
+sp<ICloseHandle> CanBusHalTest::listenForErrors(const sp<ICanErrorListener>& listener) {
+    const auto res = mCanBus->listenForErrors(listener);
+    res.assertOk();
+    return res;
+}
+
+TEST_F(CanBusHalTest, SendNoPayload) {
+    CanMessage msg = {};
+    msg.id = 0x123;
+    ASSERT_NE(mCanBus, nullptr);
+    const auto result = mCanBus->send(msg);
+    ASSERT_EQ(Result::OK, result);
+}
+
+TEST_F(CanBusHalTest, Send8B) {
+    CanMessage msg = {};
+    msg.id = 0x234;
+    msg.payload = {1, 2, 3, 4, 5, 6, 7, 8};
+
+    const auto result = mCanBus->send(msg);
+    ASSERT_EQ(Result::OK, result);
+}
+
+TEST_F(CanBusHalTest, SendZeroId) {
+    CanMessage msg = {};
+    msg.payload = {1, 2, 3};
+
+    const auto result = mCanBus->send(msg);
+    ASSERT_EQ(Result::OK, result);
+}
+
+TEST_F(CanBusHalTest, SendTooLong) {
+    CanMessage msg = {};
+    msg.id = 0x123;
+    msg.payload = hidl_vec<uint8_t>(102400);  // 100kiB
+
+    const auto result = mCanBus->send(msg);
+    ASSERT_EQ(Result::PAYLOAD_TOO_LONG, result);
+}
+
+TEST_F(CanBusHalTest, ListenNoFilter) {
+    const auto [result, closeHandle] = listen({}, new CanMessageListener());
+    ASSERT_EQ(Result::OK, result);
+
+    closeHandle->close().assertOk();
+}
+
+TEST_F(CanBusHalTest, ListenSomeFilter) {
+    hidl_vec<CanMessageFilter> filters = {
+            {0x123, 0x1FF, FilterFlag::DONT_CARE, FilterFlag::DONT_CARE, false},
+            {0x001, 0x00F, FilterFlag::DONT_CARE, FilterFlag::DONT_CARE, true},
+            {0x200, 0x100, FilterFlag::DONT_CARE, FilterFlag::DONT_CARE, false},
+    };
+
+    const auto [result, closeHandle] = listen(filters, new CanMessageListener());
+    ASSERT_EQ(Result::OK, result);
+
+    closeHandle->close().assertOk();
+}
+
+TEST_F(CanBusHalTest, ListenNull) {
+    const auto [result, closeHandle] = listen({}, nullptr);
+    ASSERT_EQ(Result::INVALID_ARGUMENTS, result);
+}
+
+TEST_F(CanBusHalTest, DoubleCloseListener) {
+    const auto [result, closeHandle] = listen({}, new CanMessageListener());
+    ASSERT_EQ(Result::OK, result);
+
+    closeHandle->close().assertOk();
+    closeHandle->close().assertOk();
+}
+
+TEST_F(CanBusHalTest, DontCloseListener) {
+    const auto [result, closeHandle] = listen({}, new CanMessageListener());
+    ASSERT_EQ(Result::OK, result);
+}
+
+TEST_F(CanBusHalTest, DoubleCloseErrorListener) {
+    auto closeHandle = listenForErrors(new CanErrorListener());
+    ASSERT_NE(nullptr, closeHandle.get());
+
+    closeHandle->close().assertOk();
+    closeHandle->close().assertOk();
+}
+
+TEST_F(CanBusHalTest, DoubleCloseNullErrorListener) {
+    auto closeHandle = listenForErrors(nullptr);
+    ASSERT_NE(nullptr, closeHandle.get());
+
+    closeHandle->close().assertOk();
+    closeHandle->close().assertOk();
+}
+
+TEST_F(CanBusHalTest, DontCloseErrorListener) {
+    auto closeHandle = listenForErrors(new CanErrorListener());
+    ASSERT_NE(nullptr, closeHandle.get());
+}
+
+}  // namespace android::hardware::automotive::can::V1_0::vts
+
+/**
+ * This test requires that you bring up a valid bus first.
+ *
+ * Before running:
+ * mma -j && adb root && adb remount && adb sync
+ *
+ * Example manual invocation:
+ * adb shell /data/nativetest64/VtsHalCanBusV1_0TargetTest/VtsHalCanBusV1_0TargetTest \
+ *     --hal_service_instance=android.hardware.automotive.can@1.0::ICanBus/<NAME_OF_VALID_BUS>
+ */
+int main(int argc, char** argv) {
+    using android::hardware::automotive::can::V1_0::ICanBus;
+    using android::hardware::automotive::can::V1_0::vts::gEnv;
+    using android::hardware::automotive::can::V1_0::vts::utils::SimpleHidlEnvironment;
+    setenv("TREBLE_TESTING_OVERRIDE", "true", true);
+    android::base::SetDefaultTag("CanBusVts");
+    android::base::SetMinimumLogSeverity(android::base::VERBOSE);
+    gEnv = new SimpleHidlEnvironment<ICanBus>;
+    ::testing::AddGlobalTestEnvironment(gEnv);
+    ::testing::InitGoogleTest(&argc, argv);
+    gEnv->init(&argc, argv);
+    return RUN_ALL_TESTS();
+}
diff --git a/automotive/can/1.0/vts/functional/VtsHalCanBusVirtualV1_0TargetTest.cpp b/automotive/can/1.0/vts/functional/VtsHalCanBusVirtualV1_0TargetTest.cpp
new file mode 100644
index 0000000..efaad53
--- /dev/null
+++ b/automotive/can/1.0/vts/functional/VtsHalCanBusVirtualV1_0TargetTest.cpp
@@ -0,0 +1,892 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <VtsHalHidlTargetTestBase.h>
+#include <android-base/logging.h>
+#include <android-base/strings.h>
+#include <android/hardware/automotive/can/1.0/ICanBus.h>
+#include <android/hardware/automotive/can/1.0/ICanController.h>
+#include <android/hardware/automotive/can/1.0/types.h>
+#include <android/hidl/manager/1.2/IServiceManager.h>
+#include <can-vts-utils/bus-enumerator.h>
+#include <can-vts-utils/can-hal-printers.h>
+#include <can-vts-utils/environment-utils.h>
+#include <gmock/gmock.h>
+#include <hidl-utils/hidl-utils.h>
+#include <utils/Mutex.h>
+#include <utils/SystemClock.h>
+
+#include <chrono>
+#include <thread>
+
+namespace android::hardware::automotive::can::V1_0::vts {
+
+using namespace std::chrono_literals;
+
+using hardware::hidl_vec;
+using InterfaceType = ICanController::InterfaceType;
+
+static utils::SimpleHidlEnvironment<ICanController>* gEnv = nullptr;
+
+struct CanMessageListener : public can::V1_0::ICanMessageListener {
+    DISALLOW_COPY_AND_ASSIGN(CanMessageListener);
+
+    CanMessageListener() {}
+
+    virtual Return<void> onReceive(const can::V1_0::CanMessage& msg) override {
+        std::unique_lock<std::mutex> lk(mMessagesGuard);
+        mMessages.push_back(msg);
+        mMessagesUpdated.notify_one();
+        return {};
+    }
+
+    virtual ~CanMessageListener() { mCloseHandle->close(); }
+
+    void assignCloseHandle(sp<ICloseHandle> closeHandle) {
+        EXPECT_TRUE(closeHandle);
+        EXPECT_FALSE(mCloseHandle);
+        mCloseHandle = closeHandle;
+    }
+
+    std::vector<can::V1_0::CanMessage> fetchMessages(std::chrono::milliseconds timeout,
+                                                     unsigned atLeast = 1) {
+        std::unique_lock<std::mutex> lk(mMessagesGuard);
+        mMessagesUpdated.wait_for(lk, timeout, [&] { return mMessages.size() >= atLeast; });
+        const auto messages = mMessages;
+        mMessages.clear();
+        return messages;
+    }
+
+  private:
+    sp<ICloseHandle> mCloseHandle;
+
+    std::mutex mMessagesGuard;
+    std::condition_variable mMessagesUpdated GUARDED_BY(mMessagesGuard);
+    std::vector<can::V1_0::CanMessage> mMessages GUARDED_BY(mMessagesGuard);
+};
+
+struct Bus {
+    DISALLOW_COPY_AND_ASSIGN(Bus);
+
+    Bus(sp<ICanController> controller, const ICanController::BusConfiguration& config)
+        : mIfname(config.name), mController(controller) {
+        const auto result = controller->upInterface(config);
+        EXPECT_EQ(ICanController::Result::OK, result);
+
+        /* Not using ICanBus::getService here, since it ignores interfaces not in the manifest
+         * file -- this is a test, so we don't want to add dummy services to a device manifest. */
+        auto manager = hidl::manager::V1_2::IServiceManager::getService();
+        auto service = manager->get(ICanBus::descriptor, config.name);
+        mBus = ICanBus::castFrom(service);
+        EXPECT_TRUE(mBus) << "ICanBus/" << config.name << " failed to register";
+    }
+
+    virtual ~Bus() { reset(); }
+
+    void reset() {
+        mBus.clear();
+        if (mController) {
+            const auto res = mController->downInterface(mIfname);
+            EXPECT_TRUE(res);
+            mController.clear();
+        }
+    }
+
+    ICanBus* operator->() const { return mBus.get(); }
+    sp<ICanBus> get() { return mBus; }
+
+    sp<CanMessageListener> listen(const hidl_vec<CanMessageFilter>& filter) {
+        sp<CanMessageListener> listener = new CanMessageListener();
+
+        Result result;
+        sp<ICloseHandle> closeHandle;
+        mBus->listen(filter, listener, hidl_utils::fill(&result, &closeHandle)).assertOk();
+        EXPECT_EQ(Result::OK, result);
+        listener->assignCloseHandle(closeHandle);
+
+        return listener;
+    }
+
+    void send(const CanMessage& msg) {
+        EXPECT_NE(mBus, nullptr);
+        const auto result = mBus->send(msg);
+        EXPECT_EQ(Result::OK, result);
+    }
+
+  private:
+    const std::string mIfname;
+    sp<ICanController> mController;
+    sp<ICanBus> mBus;
+};
+
+class CanBusVirtualHalTest : public ::testing::VtsHalHidlTargetTestBase {
+  protected:
+    virtual void SetUp() override;
+
+    static void SetUpTestCase();
+    static void TearDownTestCase();
+
+    Bus makeBus();
+
+  protected:
+    static hidl_vec<hidl_string> mBusNames;
+
+  private:
+    unsigned mLastIface = 0;
+    static sp<ICanController> mCanController;
+    static bool mVirtualSupported;
+    static bool mTestCaseInitialized;
+};
+
+sp<ICanController> CanBusVirtualHalTest::mCanController = nullptr;
+bool CanBusVirtualHalTest::mVirtualSupported;
+hidl_vec<hidl_string> CanBusVirtualHalTest::mBusNames;
+bool CanBusVirtualHalTest::mTestCaseInitialized = false;
+
+static CanMessage makeMessage(CanMessageId id, bool rtr, bool extended) {
+    CanMessage msg = {};
+    msg.id = id;
+    msg.remoteTransmissionRequest = rtr;
+    msg.isExtendedId = extended;
+    return msg;
+}
+
+static void clearTimestamps(std::vector<CanMessage>& messages) {
+    std::for_each(messages.begin(), messages.end(), [](auto& msg) { msg.timestamp = 0; });
+}
+
+void CanBusVirtualHalTest::SetUp() {
+    if (!mVirtualSupported) GTEST_SKIP();
+    ASSERT_TRUE(mTestCaseInitialized);
+}
+
+void CanBusVirtualHalTest::SetUpTestCase() {
+    const auto serviceName = gEnv->getServiceName<ICanController>();
+    mCanController = getService<ICanController>(serviceName);
+    ASSERT_TRUE(mCanController) << "Couldn't open CAN Controller: " << serviceName;
+
+    hidl_vec<InterfaceType> supported;
+    mCanController->getSupportedInterfaceTypes(hidl_utils::fill(&supported)).assertOk();
+    mVirtualSupported = supported.contains(InterfaceType::VIRTUAL);
+
+    mBusNames = utils::getBusNames();
+    ASSERT_NE(0u, mBusNames.size()) << "No ICanBus HALs defined in device manifest";
+
+    mTestCaseInitialized = true;
+}
+
+void CanBusVirtualHalTest::TearDownTestCase() {
+    mCanController.clear();
+}
+
+Bus CanBusVirtualHalTest::makeBus() {
+    const auto idx = mLastIface++;
+    EXPECT_LT(idx, mBusNames.size());
+
+    ICanController::BusConfiguration config = {};
+    config.name = mBusNames[idx];
+    config.iftype = InterfaceType::VIRTUAL;
+    config.interfaceId.address("vcan50");
+
+    return Bus(mCanController, config);
+}
+
+TEST_F(CanBusVirtualHalTest, Send) {
+    auto bus = makeBus();
+
+    CanMessage msg = {};
+    msg.id = 0x123;
+    msg.payload = {1, 2, 3};
+
+    bus.send(msg);
+}
+
+TEST_F(CanBusVirtualHalTest, SendAfterClose) {
+    auto bus = makeBus();
+    auto zombie = bus.get();
+    bus.reset();
+
+    const auto result = zombie->send({});
+    ASSERT_EQ(Result::INTERFACE_DOWN, result);
+}
+
+TEST_F(CanBusVirtualHalTest, SendAndRecv) {
+    if (mBusNames.size() < 2u) GTEST_SKIP() << "Not testable with less than two CAN buses.";
+    auto bus1 = makeBus();
+    auto bus2 = makeBus();
+
+    auto listener = bus2.listen({});
+
+    CanMessage msg = {};
+    msg.id = 0x123;
+    msg.payload = {1, 2, 3};
+    bus1.send(msg);
+
+    auto messages = listener->fetchMessages(100ms);
+    ASSERT_EQ(1u, messages.size());
+    ASSERT_NEAR(uint64_t(elapsedRealtimeNano()), messages[0].timestamp,
+                std::chrono::nanoseconds(100ms).count());
+    clearTimestamps(messages);
+    ASSERT_EQ(msg, messages[0]);
+}
+
+TEST_F(CanBusVirtualHalTest, DownOneOfTwo) {
+    if (mBusNames.size() < 2u) GTEST_SKIP() << "Not testable with less than two CAN buses.";
+
+    auto bus1 = makeBus();
+    auto bus2 = makeBus();
+
+    bus2.reset();
+
+    bus1.send({});
+}
+
+TEST_F(CanBusVirtualHalTest, FilterPositive) {
+    if (mBusNames.size() < 2u) GTEST_SKIP() << "Not testable with less than two CAN buses.";
+    auto bus1 = makeBus();
+    auto bus2 = makeBus();
+
+    /* clang-format off */
+    /*        id,            mask,           rtr,                   eff,          exclude */
+    hidl_vec<CanMessageFilter> filterPositive = {
+            {0x334,           0x73F, FilterFlag::DONT_CARE, FilterFlag::DONT_CARE, false},
+            {0x49D,           0x700, FilterFlag::DONT_CARE, FilterFlag::DONT_CARE, false},
+            {0x325,           0x7FC, FilterFlag::DONT_CARE, FilterFlag::NOT_SET,   false},
+            {0x246,           0x7FF, FilterFlag::SET,       FilterFlag::DONT_CARE, false},
+            {0x1A2,           0x7FB, FilterFlag::SET,       FilterFlag::NOT_SET,   false},
+            {0x607,           0x7C9, FilterFlag::NOT_SET,   FilterFlag::DONT_CARE, false},
+            {0x7F4,           0x777, FilterFlag::NOT_SET,   FilterFlag::NOT_SET,   false},
+            {0x1BF19EAF, 0x10F0F0F0, FilterFlag::DONT_CARE, FilterFlag::DONT_CARE, false},
+            {0x12E99200, 0x1FFFFFFF, FilterFlag::DONT_CARE, FilterFlag::SET,       false},
+            {0x06B70270, 0x1FFFFFFF, FilterFlag::SET,       FilterFlag::DONT_CARE, false},
+            {0x096CFD2B, 0x1FFFFFFF, FilterFlag::SET,       FilterFlag::SET,       false},
+            {0x1BDCB008, 0x0F0F0F0F, FilterFlag::NOT_SET,   FilterFlag::DONT_CARE, false},
+            {0x08318B46, 0x10F0F0F0, FilterFlag::NOT_SET,   FilterFlag::SET,       false},
+            {0x06B,           0x70F, FilterFlag::DONT_CARE, FilterFlag::SET,       false},
+            {0x750,           0x70F, FilterFlag::SET,       FilterFlag::SET,       false},
+            {0x5CF,           0x70F, FilterFlag::NOT_SET,   FilterFlag::SET,       false},
+    };
+    /* clang-format on */
+    auto listenerPositive = bus2.listen(filterPositive);
+
+    // 334:73F, DNC, DNC
+    bus1.send(makeMessage(0x3F4, false, false));
+    bus1.send(makeMessage(0x334, false, true));
+    bus1.send(makeMessage(0x374, true, false));
+    bus1.send(makeMessage(0x3F4, true, true));
+
+    // 49D:700, DNC, DNC
+    bus1.send(makeMessage(0x404, false, false));
+    bus1.send(makeMessage(0x4A5, false, true));
+    bus1.send(makeMessage(0x4FF, true, false));
+    bus1.send(makeMessage(0x46B, true, true));
+
+    // 325:7FC, DNC, NS
+    bus1.send(makeMessage(0x324, false, false));
+    bus1.send(makeMessage(0x325, false, true));  // filtered out
+    bus1.send(makeMessage(0x326, true, false));
+    bus1.send(makeMessage(0x327, true, true));  // filtered out
+
+    // 246:7FF, SET, DNC
+    bus1.send(makeMessage(0x246, false, false));  // filtered out
+    bus1.send(makeMessage(0x246, false, true));   // filtered out
+    bus1.send(makeMessage(0x246, true, false));
+    bus1.send(makeMessage(0x246, true, true));
+
+    // 1A2:7FB, SET, NS
+    bus1.send(makeMessage(0x1A2, false, false));  // filtered out
+    bus1.send(makeMessage(0x1A6, false, true));   // filtered out
+    bus1.send(makeMessage(0x1A2, true, false));
+    bus1.send(makeMessage(0x1A6, true, true));  // filtered out
+
+    // 607:7C9, NS, DNC
+    bus1.send(makeMessage(0x607, false, false));
+    bus1.send(makeMessage(0x613, false, true));
+    bus1.send(makeMessage(0x625, true, false));  // filtered out
+    bus1.send(makeMessage(0x631, true, true));   // filtered out
+
+    // 7F4:777, NS, NS
+    bus1.send(makeMessage(0x774, false, false));
+    bus1.send(makeMessage(0x7F4, false, true));  // filtered out
+    bus1.send(makeMessage(0x77C, true, false));  // filtered out
+    bus1.send(makeMessage(0x7FC, true, false));  // filtered out
+
+    // 1BF19EAF:10F0F0F0, DNC, DNC
+    bus1.send(makeMessage(0x11F293A4, false, false));
+    bus1.send(makeMessage(0x15F697A8, false, true));
+    bus1.send(makeMessage(0x19FA9BAC, true, false));
+    bus1.send(makeMessage(0x1DFE9FA0, true, true));
+
+    // 12E99200:1FFFFFFF, DNC, SET
+    bus1.send(makeMessage(0x12E99200, false, false));  // filtered out
+    bus1.send(makeMessage(0x12E99200, false, true));
+    bus1.send(makeMessage(0x12E99200, true, false));  // filtered out
+    bus1.send(makeMessage(0x12E99200, true, true));
+
+    // 06B70270:1FFFFFFF, SET, DNC
+    bus1.send(makeMessage(0x06B70270, false, false));  // filtered out
+    bus1.send(makeMessage(0x06B70270, false, true));   // filtered out
+    bus1.send(makeMessage(0x06B70270, true, false));
+    bus1.send(makeMessage(0x06B70270, true, true));
+
+    // 096CFD2B:1FFFFFFF, SET, SET
+    bus1.send(makeMessage(0x096CFD2B, false, false));  // filtered out
+    bus1.send(makeMessage(0x096CFD2B, false, true));   // filtered out
+    bus1.send(makeMessage(0x096CFD2B, true, false));   // filtered out
+    bus1.send(makeMessage(0x096CFD2B, true, true));
+
+    // 1BDCB008:0F0F0F0F, NS, DNC
+    bus1.send(makeMessage(0x1B2C3048, false, false));
+    bus1.send(makeMessage(0x0B5C6078, false, true));
+    bus1.send(makeMessage(0x1B8C90A8, true, false));  // filtered out
+    bus1.send(makeMessage(0x0BBCC0D8, true, true));   // filtered out
+
+    // 08318B46:10F0F0F0, NS, SET
+    bus1.send(makeMessage(0x0F3E8D4C, false, false));  // filtered out
+    bus1.send(makeMessage(0x0B3A8948, false, true));
+    bus1.send(makeMessage(0x07368544, true, false));  // filtered out
+    bus1.send(makeMessage(0x03328140, true, true));   // filtered out
+
+    // 06B:70F, DNC, SET
+    bus1.send(makeMessage(0x00B, false, false));  // filtered out
+    bus1.send(makeMessage(0x04B, false, true));
+    bus1.send(makeMessage(0x08B, true, false));  // filtered out
+    bus1.send(makeMessage(0x0FB, true, true));
+
+    // 750:70F, SET, SET
+    bus1.send(makeMessage(0x7F0, false, false));  // filtered out
+    bus1.send(makeMessage(0x780, false, true));   // filtered out
+    bus1.send(makeMessage(0x740, true, false));   // filtered out
+    bus1.send(makeMessage(0x700, true, true));
+
+    // 5CF:70F, NS, SET
+    bus1.send(makeMessage(0x51F, false, false));  // filtered out
+    bus1.send(makeMessage(0x53F, false, true));
+    bus1.send(makeMessage(0x57F, true, false));  // filtered out
+    bus1.send(makeMessage(0x5FF, true, true));   // filtered out
+
+    std::vector<can::V1_0::CanMessage> expectedPositive{
+            makeMessage(0x3F4, false, false),       // 334:73F, DNC, DNC
+            makeMessage(0x334, false, true),        // 334:73F, DNC, DNC
+            makeMessage(0x374, true, false),        // 334:73F, DNC, DNC
+            makeMessage(0x3F4, true, true),         // 334:73F, DNC, DNC
+            makeMessage(0x404, false, false),       // 49D:700, DNC, DNC
+            makeMessage(0x4A5, false, true),        // 49D:700, DNC, DNC
+            makeMessage(0x4FF, true, false),        // 49D:700, DNC, DNC
+            makeMessage(0x46B, true, true),         // 49D:700, DNC, DNC
+            makeMessage(0x324, false, false),       // 325:7FC, DNC, NS
+            makeMessage(0x326, true, false),        // 325:7FC, DNC, NS
+            makeMessage(0x246, true, false),        // 246:7FF, SET, DNC
+            makeMessage(0x246, true, true),         // 246:7FF, SET, DNC
+            makeMessage(0x1A2, true, false),        // 1A2:7FB, SET, NS
+            makeMessage(0x607, false, false),       // 607:7C9, NS, DNC
+            makeMessage(0x613, false, true),        // 607:7C9, NS, DNC
+            makeMessage(0x774, false, false),       // 7F4:777, NS, NS
+            makeMessage(0x11F293A4, false, false),  // 1BF19EAF:10F0F0F0, DNC, DNC
+            makeMessage(0x15F697A8, false, true),   // 1BF19EAF:10F0F0F0, DNC, DNC
+            makeMessage(0x19FA9BAC, true, false),   // 1BF19EAF:10F0F0F0, DNC, DNC
+            makeMessage(0x1DFE9FA0, true, true),    // 1BF19EAF:10F0F0F0, DNC, DNC
+            makeMessage(0x12E99200, false, true),   // 12E99200:1FFFFFFF, DNC, SET
+            makeMessage(0x12E99200, true, true),    // 12E99200:1FFFFFFF, DNC, SET
+            makeMessage(0x06B70270, true, false),   // 06B70270:1FFFFFFF, SET, DNC
+            makeMessage(0x06B70270, true, true),    // 06B70270:1FFFFFFF, SET, DNC
+            makeMessage(0x096CFD2B, true, true),    // 096CFD2B:1FFFFFFF, SET, SET
+            makeMessage(0x1B2C3048, false, false),  // 1BDCB008:0F0F0F0F, NS, DNC
+            makeMessage(0x0B5C6078, false, true),   // 1BDCB008:0F0F0F0F, NS, DNC
+            makeMessage(0x0B3A8948, false, true),   // 08318B46:10F0F0F0, NS, SET
+            makeMessage(0x04B, false, true),        // 06B:70F, DNC, SET
+            makeMessage(0x0FB, true, true),         // 06B:70F, DNC, SET
+            makeMessage(0x700, true, true),         // 750:70F, SET, SET
+            makeMessage(0x53F, false, true),        // 5CF:70F, NS, SET
+    };
+
+    auto messagesPositive = listenerPositive->fetchMessages(100ms, expectedPositive.size());
+    clearTimestamps(messagesPositive);
+    ASSERT_EQ(expectedPositive, messagesPositive);
+}
+
+TEST_F(CanBusVirtualHalTest, FilterNegative) {
+    if (mBusNames.size() < 2u) GTEST_SKIP() << "Not testable with less than two CAN buses.";
+    auto bus1 = makeBus();
+    auto bus2 = makeBus();
+
+    /* clang-format off */
+    /*        id,             mask,           rtr,                   eff          exclude */
+    hidl_vec<CanMessageFilter> filterNegative = {
+            {0x063,           0x7F3, FilterFlag::DONT_CARE, FilterFlag::DONT_CARE, true},
+            {0x0A1,           0x78F, FilterFlag::DONT_CARE, FilterFlag::DONT_CARE, true},
+            {0x18B,           0x7E3, FilterFlag::DONT_CARE, FilterFlag::NOT_SET,   true},
+            {0x1EE,           0x7EC, FilterFlag::SET,       FilterFlag::DONT_CARE, true},
+            {0x23F,           0x7A5, FilterFlag::SET,       FilterFlag::NOT_SET,   true},
+            {0x31F,           0x77F, FilterFlag::NOT_SET,   FilterFlag::DONT_CARE, true},
+            {0x341,           0x77F, FilterFlag::NOT_SET,   FilterFlag::NOT_SET,   true},
+            {0x196573DB, 0x1FFFFF7F, FilterFlag::DONT_CARE, FilterFlag::DONT_CARE, true},
+            {0x1CFCB417, 0x1FFFFFEC, FilterFlag::DONT_CARE, FilterFlag::SET,       true},
+            {0x17CCC433, 0x1FFFFFEC, FilterFlag::SET,       FilterFlag::DONT_CARE, true},
+            {0x0BC2F508, 0x1FFFFFC3, FilterFlag::SET,       FilterFlag::SET,       true},
+            {0x1179B5D2, 0x1FFFFFC3, FilterFlag::NOT_SET,   FilterFlag::DONT_CARE, true},
+            {0x082AF63D, 0x1FFFFFFF, FilterFlag::NOT_SET,   FilterFlag::SET,       true},
+            {0x66D,           0x76F, FilterFlag::DONT_CARE, FilterFlag::SET,       true},
+            {0x748,           0x7CC, FilterFlag::SET,       FilterFlag::SET,       true},
+            {0x784,           0x7CC, FilterFlag::NOT_SET,   FilterFlag::SET,       true},
+    };
+    /* clang-format on */
+
+    auto listenerNegative = bus2.listen(filterNegative);
+
+    // 063:7F3, DNC, DNC: ~06[3,7,B,F]
+    bus1.send(makeMessage(0x063, false, false));  // filtered out
+    bus1.send(makeMessage(0x060, false, true));
+    bus1.send(makeMessage(0x05B, true, false));
+    bus1.send(makeMessage(0x06F, true, true));  // filtered out
+
+    // 0A1:78F, DNC, DNC: ~0[8-F]1
+    bus1.send(makeMessage(0x081, false, false));  // filtered out
+    bus1.send(makeMessage(0x031, false, true));
+    bus1.send(makeMessage(0x061, true, false));
+    bus1.send(makeMessage(0x071, true, true));
+
+    // 18B:7E3, DNC, NS: ~1[8-9][7,B,F]
+    bus1.send(makeMessage(0x18B, false, false));  // filtered out
+    bus1.send(makeMessage(0x188, false, true));
+    bus1.send(makeMessage(0x123, true, false));
+    bus1.send(makeMessage(0x1D5, true, true));
+
+    // 1EE:7EC, SET, DNC: ~1[E-F][C-F]
+    bus1.send(makeMessage(0x17E, false, false));
+    bus1.send(makeMessage(0x138, false, true));
+    bus1.send(makeMessage(0x123, true, false));
+    bus1.send(makeMessage(0x1EC, true, true));  // filtered out
+
+    // 23F:7A5, SET, NS: ~2[2,3,6,7][5,7,D,F]
+    bus1.send(makeMessage(0x222, false, false));
+    bus1.send(makeMessage(0x275, false, true));
+    bus1.send(makeMessage(0x23f, true, false));  // filtered out
+    bus1.send(makeMessage(0x241, true, false));
+    bus1.send(makeMessage(0x2FF, true, true));
+
+    // 31F:77F, NS, DNC: ~3[1,9]F
+    bus1.send(makeMessage(0x32F, false, false));
+    bus1.send(makeMessage(0x31F, false, true));  // filtered out
+    bus1.send(makeMessage(0x36F, false, true));
+    bus1.send(makeMessage(0x31F, true, false));
+    bus1.send(makeMessage(0x3F3, true, true));
+
+    // 341:77F, NS, NS: ~3[4,C]1
+    bus1.send(makeMessage(0x341, false, false));  // filtered out
+    bus1.send(makeMessage(0x352, false, false));
+    bus1.send(makeMessage(0x3AA, false, true));
+    bus1.send(makeMessage(0x3BC, true, false));
+    bus1.send(makeMessage(0x3FF, true, true));
+
+    // 196573DB:1FFFFF7F, DNC, DNC: ~196573[5,D]B
+    bus1.send(makeMessage(0x1965733B, false, false));
+    bus1.send(makeMessage(0x1965734B, false, true));
+    bus1.send(makeMessage(0x1965735B, true, false));  // filtered out
+    bus1.send(makeMessage(0x1965736B, true, true));
+
+    // 1CFCB417:1FFFFFEC, DNC, SET: ~1CFCB4[0-1][4-7]
+    bus1.send(makeMessage(0x1CFCB407, false, false));
+    bus1.send(makeMessage(0x1CFCB4FF, false, true));
+    bus1.send(makeMessage(0x1CFCB414, true, false));
+    bus1.send(makeMessage(0x1CFCB407, true, true));  // filtered out
+
+    // 17CCC433:1FFFFFEC, SET, DNC: ~17CCC4[2-3][0-3]
+    bus1.send(makeMessage(0x17CCC430, false, false));
+    bus1.send(makeMessage(0x17CCC423, false, true));
+    bus1.send(makeMessage(0x17CCC420, true, false));  // filtered out
+    bus1.send(makeMessage(0x17CCC444, true, true));
+
+    // 0BC2F508:1FFFFFC3, SET, SET: ~5[0-3][0,4,8,C]
+    bus1.send(makeMessage(0x0BC2F504, false, false));
+    bus1.send(makeMessage(0x0BC2F518, false, true));
+    bus1.send(makeMessage(0x0BC2F52C, true, false));
+    bus1.send(makeMessage(0x0BC2F500, true, true));  // filtered out
+    bus1.send(makeMessage(0x0BC2F543, true, true));
+
+    // 1179B5D2:1FFFFFC3, NS, DNC: ~5[C-F][2,6,A,E]
+    bus1.send(makeMessage(0x1179B5BB, false, false));
+    bus1.send(makeMessage(0x1179B5EA, false, true));  // filtered out
+    bus1.send(makeMessage(0x1179B5C2, true, false));
+    bus1.send(makeMessage(0x1179B5DA, true, true));
+
+    // 082AF63D:1FFFFF6F, NS, SET: ~6[2,3,A,B]D
+    bus1.send(makeMessage(0x082AF62D, false, false));
+    bus1.send(makeMessage(0x082AF63D, false, true));  // filtered out
+    bus1.send(makeMessage(0x082AF60D, false, true));
+    bus1.send(makeMessage(0x082AF6AD, true, false));
+    bus1.send(makeMessage(0x082AF6BD, true, true));
+
+    // 66D:76F, DNC, SET: ~6[6,7,E,F]D
+    bus1.send(makeMessage(0x66D, false, false));
+    bus1.send(makeMessage(0x68D, false, true));
+    bus1.send(makeMessage(0x67D, true, false));
+    bus1.send(makeMessage(0x6ED, true, true));  // filtered out
+
+    // 748:7CC, SET, SET: ~0x7[4-7][8-F]
+    bus1.send(makeMessage(0x749, false, false));
+    bus1.send(makeMessage(0x75A, false, true));
+    bus1.send(makeMessage(0x76B, true, false));
+    bus1.send(makeMessage(0x748, true, true));  // filtered out
+    bus1.send(makeMessage(0x788, true, true));
+
+    // 784:7CC, NS, SET: ~0x7[8-F][4-7]
+    bus1.send(makeMessage(0x795, false, false));
+    bus1.send(makeMessage(0x784, false, true));  // filtered out
+    bus1.send(makeMessage(0x71B, false, true));
+    bus1.send(makeMessage(0x769, true, false));
+    bus1.send(makeMessage(0x784, true, true));
+
+    std::vector<can::V1_0::CanMessage> expectedNegative{
+            makeMessage(0x060, false, true),        // 063:7F3, DNC, DNC
+            makeMessage(0x05B, true, false),        // 063:7F3, DNC, DNC
+            makeMessage(0x031, false, true),        // 0A1:78F, DNC, DNC
+            makeMessage(0x061, true, false),        // 0A1:78F, DNC, DNC
+            makeMessage(0x071, true, true),         // 0A1:78F, DNC, DNC
+            makeMessage(0x188, false, true),        // 18B:7E3, DNC, NS
+            makeMessage(0x123, true, false),        // 18B:7E3, DNC, NS
+            makeMessage(0x1D5, true, true),         // 18B:7E3, DNC, NS
+            makeMessage(0x17E, false, false),       // 1EE:7EC, SET, DNC
+            makeMessage(0x138, false, true),        // 1EE:7EC, SET, DNC
+            makeMessage(0x123, true, false),        // 1EE:7EC, SET, DNC
+            makeMessage(0x222, false, false),       // 23F:7A5, SET, NS
+            makeMessage(0x275, false, true),        // 23F:7A5, SET, NS
+            makeMessage(0x241, true, false),        // 23F:7A5, SET, NS
+            makeMessage(0x2FF, true, true),         // 23F:7A5, SET, NS
+            makeMessage(0x32F, false, false),       // 31F:77F, NS, DNC
+            makeMessage(0x36F, false, true),        // 31F:77F, NS, DNC
+            makeMessage(0x31F, true, false),        // 31F:77F, NS, DNC
+            makeMessage(0x3F3, true, true),         // 31F:77F, NS, DNC
+            makeMessage(0x352, false, false),       // 341:77F, NS, NS
+            makeMessage(0x3AA, false, true),        // 341:77F, NS, NS
+            makeMessage(0x3BC, true, false),        // 341:77F, NS, NS
+            makeMessage(0x3FF, true, true),         // 341:77F, NS, NS
+            makeMessage(0x1965733B, false, false),  // 196573DB:1FFFFF7F, DNC, DNC
+            makeMessage(0x1965734B, false, true),   // 196573DB:1FFFFF7F, DNC, DNC
+            makeMessage(0x1965736B, true, true),    // 196573DB:1FFFFF7F, DNC, DNC
+            makeMessage(0x1CFCB407, false, false),  // 1CFCB417:1FFFFFEC, DNC, SET
+            makeMessage(0x1CFCB4FF, false, true),   // 1CFCB417:1FFFFFEC, DNC, SET
+            makeMessage(0x1CFCB414, true, false),   // 1CFCB417:1FFFFFEC, DNC, SET
+            makeMessage(0x17CCC430, false, false),  // 17CCC433:1FFFFFEC, SET, DNC
+            makeMessage(0x17CCC423, false, true),   // 17CCC433:1FFFFFEC, SET, DNC
+            makeMessage(0x17CCC444, true, true),    // 17CCC433:1FFFFFEC, SET, DNC
+            makeMessage(0x0BC2F504, false, false),  // 0BC2F508:1FFFFFC3, SET, SET
+            makeMessage(0x0BC2F518, false, true),   // 0BC2F508:1FFFFFC3, SET, SET
+            makeMessage(0x0BC2F52C, true, false),   // 0BC2F508:1FFFFFC3, SET, SET
+            makeMessage(0x0BC2F543, true, true),    // 0BC2F508:1FFFFFC3, SET, SET
+            makeMessage(0x1179B5BB, false, false),  // 1179B5D2:1FFFFFC3, NS, DNC
+            makeMessage(0x1179B5C2, true, false),   // 1179B5D2:1FFFFFC3, NS, DNC
+            makeMessage(0x1179B5DA, true, true),    // 1179B5D2:1FFFFFC3, NS, DNC
+            makeMessage(0x082AF62D, false, false),  // 082AF63D:1FFFFF6F, NS, SET
+            makeMessage(0x082AF60D, false, true),   // 082AF63D:1FFFFF6F, NS, SET
+            makeMessage(0x082AF6AD, true, false),   // 082AF63D:1FFFFF6F, NS, SET
+            makeMessage(0x082AF6BD, true, true),    // 082AF63D:1FFFFF6F, NS, SET
+            makeMessage(0x66D, false, false),       // 66D:76F, DNC, SET
+            makeMessage(0x68D, false, true),        // 66D:76F, DNC, SET
+            makeMessage(0x67D, true, false),        // 66D:76F, DNC, SET
+            makeMessage(0x749, false, false),       // 748:7CC, SET, SET
+            makeMessage(0x75A, false, true),        // 748:7CC, SET, SET
+            makeMessage(0x76B, true, false),        // 748:7CC, SET, SET
+            makeMessage(0x788, true, true),         // 748:7CC, SET, SET
+            makeMessage(0x795, false, false),       // 784:7CC, NS, SET
+            makeMessage(0x71B, false, true),        // 784:7CC, NS, SET
+            makeMessage(0x769, true, false),        // 784:7CC, NS, SET
+            makeMessage(0x784, true, true),         // 784:7CC, NS, SET
+    };
+
+    auto messagesNegative = listenerNegative->fetchMessages(100ms, expectedNegative.size());
+    clearTimestamps(messagesNegative);
+    ASSERT_EQ(expectedNegative, messagesNegative);
+}
+
+TEST_F(CanBusVirtualHalTest, FilterMixed) {
+    if (mBusNames.size() < 2u) GTEST_SKIP() << "Not testable with less than two CAN buses.";
+    auto bus1 = makeBus();
+    auto bus2 = makeBus();
+
+    /* clang-format off */
+    /*        id,           mask,             rtr,                   eff          exclude */
+    hidl_vec<CanMessageFilter> filterMixed = {
+            {0x000,      0x700,      FilterFlag::DONT_CARE, FilterFlag::DONT_CARE, false},
+            {0x0D5,      0x7FF,      FilterFlag::DONT_CARE, FilterFlag::DONT_CARE, true},
+            {0x046,      0x7FF,      FilterFlag::DONT_CARE, FilterFlag::NOT_SET,   true},
+            {0x11D89097, 0x1FFFFFFF, FilterFlag::DONT_CARE, FilterFlag::SET,       true},
+            {0x0AB,      0x7FF,      FilterFlag::NOT_SET,   FilterFlag::DONT_CARE, true},
+            {0x00D,      0x7FF,      FilterFlag::NOT_SET,   FilterFlag::NOT_SET,   true},
+            {0x0F82400E, 0x1FFFFFFF, FilterFlag::NOT_SET,   FilterFlag::SET,       true},
+            {0x08F,      0x7FF,      FilterFlag::SET,       FilterFlag::DONT_CARE, true},
+            {0x0BE,      0x7FF,      FilterFlag::SET,       FilterFlag::NOT_SET,   true},
+            {0x0A271011, 0x1FFFFFFF, FilterFlag::SET,       FilterFlag::SET,       true},
+            {0x0BE,      0x7FF,      FilterFlag::DONT_CARE, FilterFlag::DONT_CARE, false},
+
+            {0x100,      0x700,      FilterFlag::DONT_CARE, FilterFlag::NOT_SET,   false},
+            {0x138,      0x7FF,      FilterFlag::DONT_CARE, FilterFlag::DONT_CARE, true},
+            {0x1BF,      0x7FF,      FilterFlag::DONT_CARE, FilterFlag::NOT_SET,   true},
+            {0x13AB6165, 0x1FFFFFFF, FilterFlag::DONT_CARE, FilterFlag::SET,       true},
+            {0x17A,      0x7FF,      FilterFlag::NOT_SET,   FilterFlag::DONT_CARE, true},
+            {0x13C,      0x7FF,      FilterFlag::NOT_SET,   FilterFlag::NOT_SET,   true},
+            {0x102C5197, 0x1FFFFFFF, FilterFlag::NOT_SET,   FilterFlag::SET,       true},
+            {0x19B,      0x7FF,      FilterFlag::SET,       FilterFlag::DONT_CARE, true},
+            {0x1B8,      0x7FF,      FilterFlag::SET,       FilterFlag::NOT_SET,   true},
+            {0x0D6D5185, 0x1FFFFFFF, FilterFlag::SET,       FilterFlag::SET,       true},
+            {0x1B8,      0x7FF,      FilterFlag::DONT_CARE, FilterFlag::DONT_CARE, false},
+
+            {0x096A2200, 0x1FFFFF00, FilterFlag::DONT_CARE, FilterFlag::SET,       false},
+            {0x201,      0x7FF,      FilterFlag::DONT_CARE, FilterFlag::DONT_CARE, true},
+            {0x22A,      0x7FF,      FilterFlag::DONT_CARE, FilterFlag::NOT_SET,   true},
+            {0x1D1C3238, 0x1FFFFFFF, FilterFlag::DONT_CARE, FilterFlag::SET,       true},
+            {0x2C0,      0x7FF,      FilterFlag::NOT_SET,   FilterFlag::DONT_CARE, true},
+            {0x23C,      0x7FF,      FilterFlag::NOT_SET,   FilterFlag::NOT_SET,   true},
+            {0x016182C6, 0x1FFFFFFF, FilterFlag::NOT_SET,   FilterFlag::SET,       true},
+            {0x27B,      0x7FF,      FilterFlag::SET,       FilterFlag::DONT_CARE, true},
+            {0x2A5,      0x7FF,      FilterFlag::SET,       FilterFlag::NOT_SET,   true},
+            {0x160EB24B, 0x1FFFFFFF, FilterFlag::SET,       FilterFlag::SET,       true},
+            {0x2A5,      0x7FF,      FilterFlag::DONT_CARE, FilterFlag::DONT_CARE, false},
+
+            {0x300,      0x700,      FilterFlag::NOT_SET,   FilterFlag::DONT_CARE, false},
+            {0x339,      0x7FF,      FilterFlag::DONT_CARE, FilterFlag::DONT_CARE, true},
+            {0x3D4,      0x7FF,      FilterFlag::DONT_CARE, FilterFlag::NOT_SET,   true},
+            {0x182263BE, 0x1FFFFFFF, FilterFlag::DONT_CARE, FilterFlag::SET,       true},
+            {0x327,      0x7FF,      FilterFlag::NOT_SET,   FilterFlag::DONT_CARE, true},
+            {0x36B,      0x7FF,      FilterFlag::NOT_SET,   FilterFlag::NOT_SET,   true},
+            {0x1A1D8374, 0x1FFFFFFF, FilterFlag::NOT_SET,   FilterFlag::SET,       true},
+            {0x319,      0x7FF,      FilterFlag::SET,       FilterFlag::DONT_CARE, true},
+            {0x39E,      0x7FF,      FilterFlag::SET,       FilterFlag::NOT_SET,   true},
+            {0x1B657332, 0x1FFFFFFF, FilterFlag::SET,       FilterFlag::SET,       true},
+            {0x39E,      0x7FF,      FilterFlag::DONT_CARE, FilterFlag::DONT_CARE, false},
+
+            {0x06C5D400, 0x1FFFFF00, FilterFlag::NOT_SET,   FilterFlag::SET,       false},
+            {0x492,      0x7FF,      FilterFlag::DONT_CARE, FilterFlag::DONT_CARE, true},
+            {0x4EE,      0x7FF,      FilterFlag::DONT_CARE, FilterFlag::NOT_SET,   true},
+            {0x07725454, 0x1FFFFFFF, FilterFlag::DONT_CARE, FilterFlag::SET,       true},
+            {0x4D5,      0x7FF,      FilterFlag::NOT_SET,   FilterFlag::DONT_CARE, true},
+            {0x402,      0x7FF,      FilterFlag::NOT_SET,   FilterFlag::NOT_SET,   true},
+            {0x139714A7, 0x1FFFFFFF, FilterFlag::NOT_SET,   FilterFlag::SET,       true},
+            {0x464,      0x7FF,      FilterFlag::SET,       FilterFlag::DONT_CARE, true},
+            {0x454,      0x7FF,      FilterFlag::SET,       FilterFlag::NOT_SET,   true},
+            {0x0EF4B46F, 0x1FFFFFFF, FilterFlag::SET,       FilterFlag::SET,       true},
+            {0x454,      0x7FF,      FilterFlag::DONT_CARE, FilterFlag::DONT_CARE, false},
+
+            {0x500,      0x700,      FilterFlag::SET,       FilterFlag::DONT_CARE, false},
+            {0x503,      0x7FF,      FilterFlag::DONT_CARE, FilterFlag::DONT_CARE, true},
+            {0x566,      0x7FF,      FilterFlag::DONT_CARE, FilterFlag::NOT_SET,   true},
+            {0x137605E7, 0x1FFFFFFF, FilterFlag::DONT_CARE, FilterFlag::SET,       true},
+            {0x564,      0x7FF,      FilterFlag::NOT_SET,   FilterFlag::DONT_CARE, true},
+            {0x58E,      0x7FF,      FilterFlag::NOT_SET,   FilterFlag::NOT_SET,   true},
+            {0x05F9052D, 0x1FFFFFFF, FilterFlag::NOT_SET,   FilterFlag::SET,       true},
+            {0x595,      0x7FF,      FilterFlag::SET,       FilterFlag::DONT_CARE, true},
+            {0x563,      0x7FF,      FilterFlag::SET,       FilterFlag::NOT_SET,   true},
+            {0x13358537, 0x1FFFFFFF, FilterFlag::SET,       FilterFlag::SET,       true},
+            {0x563,      0x7FF,      FilterFlag::DONT_CARE, FilterFlag::DONT_CARE, false},
+
+            {0x600,      0x700,      FilterFlag::SET,       FilterFlag::NOT_SET,   false},
+            {0x64D,      0x7FF,      FilterFlag::DONT_CARE, FilterFlag::DONT_CARE, true},
+            {0x620,      0x7FF,      FilterFlag::DONT_CARE, FilterFlag::NOT_SET,   true},
+            {0x1069A676, 0x1FFFFFFF, FilterFlag::DONT_CARE, FilterFlag::SET,       true},
+            {0x62D,      0x7FF,      FilterFlag::NOT_SET,   FilterFlag::DONT_CARE, true},
+            {0x6C4,      0x7FF,      FilterFlag::NOT_SET,   FilterFlag::NOT_SET,   true},
+            {0x14C76629, 0x1FFFFFFF, FilterFlag::NOT_SET,   FilterFlag::SET,       true},
+            {0x689,      0x7FF,      FilterFlag::SET,       FilterFlag::DONT_CARE, true},
+            {0x6A4,      0x7FF,      FilterFlag::SET,       FilterFlag::NOT_SET,   true},
+            {0x0BCCA6C2, 0x1FFFFFFF, FilterFlag::SET,       FilterFlag::SET,       true},
+            {0x6A4,      0x7FF,      FilterFlag::DONT_CARE, FilterFlag::DONT_CARE, false},
+
+            {0x04BB1700, 0x1FFFFF00, FilterFlag::SET,       FilterFlag::SET,       false},
+            {0x784,      0x7FF,      FilterFlag::DONT_CARE, FilterFlag::DONT_CARE, true},
+            {0x7F9,      0x7FF,      FilterFlag::DONT_CARE, FilterFlag::NOT_SET,   true},
+            {0x0200F77D, 0x1FFFFFFF, FilterFlag::DONT_CARE, FilterFlag::SET,       true},
+            {0x783,      0x7FF,      FilterFlag::NOT_SET,   FilterFlag::DONT_CARE, true},
+            {0x770,      0x7FF,      FilterFlag::NOT_SET,   FilterFlag::NOT_SET,   true},
+            {0x06602719, 0x1FFFFFFF, FilterFlag::NOT_SET,   FilterFlag::SET,       true},
+            {0x76B,      0x7FF,      FilterFlag::SET,       FilterFlag::DONT_CARE, true},
+            {0x7DF,      0x7FF,      FilterFlag::SET,       FilterFlag::NOT_SET,   true},
+            {0x1939E736, 0x1FFFFFFF, FilterFlag::SET,       FilterFlag::SET,       true},
+            {0x7DF,      0x7FF,      FilterFlag::DONT_CARE, FilterFlag::DONT_CARE, false},
+    };
+    /* clang-format on */
+
+    auto listenerMixed = bus2.listen(filterMixed);
+
+    bus1.send(makeMessage(0x000, true, true));  // positive filter
+    bus1.send(makeMessage(0x0D5, false, false));
+    bus1.send(makeMessage(0x046, true, false));
+    bus1.send(makeMessage(0x046, false, false));
+    bus1.send(makeMessage(0x11D89097, true, true));
+    bus1.send(makeMessage(0x11D89097, false, true));
+    bus1.send(makeMessage(0x0AB, false, false));
+    bus1.send(makeMessage(0x0AB, false, true));
+    bus1.send(makeMessage(0x00D, false, false));
+    bus1.send(makeMessage(0x0F82400E, false, true));
+    bus1.send(makeMessage(0x08F, true, false));
+    bus1.send(makeMessage(0x08F, true, true));
+    bus1.send(makeMessage(0x0BE, true, false));
+    bus1.send(makeMessage(0x0A271011, true, true));
+    bus1.send(makeMessage(0x0BE, false, true));   // not filtered
+    bus1.send(makeMessage(0x100, false, false));  // positive filter
+    bus1.send(makeMessage(0x138, false, true));
+    bus1.send(makeMessage(0x138, true, false));
+    bus1.send(makeMessage(0x1BF, false, false));
+    bus1.send(makeMessage(0x1BF, true, false));
+    bus1.send(makeMessage(0x13AB6165, false, true));
+    bus1.send(makeMessage(0x13AB6165, true, true));
+    bus1.send(makeMessage(0x17A, false, false));
+    bus1.send(makeMessage(0x17A, false, true));
+    bus1.send(makeMessage(0x13C, false, false));
+    bus1.send(makeMessage(0x102C5197, false, true));
+    bus1.send(makeMessage(0x19B, true, false));
+    bus1.send(makeMessage(0x19B, true, true));
+    bus1.send(makeMessage(0x1B8, true, false));
+    bus1.send(makeMessage(0x0D6D5185, true, true));
+    bus1.send(makeMessage(0x1B8, false, true));       // not filtered
+    bus1.send(makeMessage(0x096A2200, false, true));  // positive filter
+    bus1.send(makeMessage(0x201, false, true));
+    bus1.send(makeMessage(0x201, true, false));
+    bus1.send(makeMessage(0x22A, false, false));
+    bus1.send(makeMessage(0x22A, true, false));
+    bus1.send(makeMessage(0x1D1C3238, false, true));
+    bus1.send(makeMessage(0x1D1C3238, true, true));
+    bus1.send(makeMessage(0x2C0, false, false));
+    bus1.send(makeMessage(0x2C0, false, true));
+    bus1.send(makeMessage(0x23C, false, false));
+    bus1.send(makeMessage(0x016182C6, false, true));
+    bus1.send(makeMessage(0x27B, true, false));
+    bus1.send(makeMessage(0x27B, true, true));
+    bus1.send(makeMessage(0x2A5, true, false));
+    bus1.send(makeMessage(0x160EB24B, true, true));
+    bus1.send(makeMessage(0x2A5, false, true));   // not filtereed
+    bus1.send(makeMessage(0x300, false, false));  // positive filter
+    bus1.send(makeMessage(0x339, false, true));
+    bus1.send(makeMessage(0x339, false, false));
+    bus1.send(makeMessage(0x3D4, true, false));
+    bus1.send(makeMessage(0x182263BE, false, true));
+    bus1.send(makeMessage(0x182263BE, true, true));
+    bus1.send(makeMessage(0x327, false, false));
+    bus1.send(makeMessage(0x327, false, true));
+    bus1.send(makeMessage(0x36B, false, false));
+    bus1.send(makeMessage(0x1A1D8374, false, true));
+    bus1.send(makeMessage(0x319, true, false));
+    bus1.send(makeMessage(0x319, true, true));
+    bus1.send(makeMessage(0x39E, true, false));
+    bus1.send(makeMessage(0x1B657332, true, true));
+    bus1.send(makeMessage(0x39E, false, true));       // not filtered
+    bus1.send(makeMessage(0x06C5D400, false, true));  // positive filter
+    bus1.send(makeMessage(0x492, false, true));
+    bus1.send(makeMessage(0x492, true, false));
+    bus1.send(makeMessage(0x4EE, false, false));
+    bus1.send(makeMessage(0x4EE, true, false));
+    bus1.send(makeMessage(0x07725454, false, true));
+    bus1.send(makeMessage(0x07725454, true, true));
+    bus1.send(makeMessage(0x4D5, false, false));
+    bus1.send(makeMessage(0x4D5, false, true));
+    bus1.send(makeMessage(0x402, false, false));
+    bus1.send(makeMessage(0x139714A7, false, true));
+    bus1.send(makeMessage(0x464, true, false));
+    bus1.send(makeMessage(0x464, true, true));
+    bus1.send(makeMessage(0x454, true, false));
+    bus1.send(makeMessage(0x0EF4B46F, true, true));
+    bus1.send(makeMessage(0x454, false, true));  // not filtered
+    bus1.send(makeMessage(0x500, true, false));  // positive filter
+    bus1.send(makeMessage(0x503, false, true));
+    bus1.send(makeMessage(0x503, true, false));
+    bus1.send(makeMessage(0x566, false, false));
+    bus1.send(makeMessage(0x566, true, false));
+    bus1.send(makeMessage(0x137605E7, false, true));
+    bus1.send(makeMessage(0x137605E7, true, true));
+    bus1.send(makeMessage(0x564, false, false));
+    bus1.send(makeMessage(0x564, false, true));
+    bus1.send(makeMessage(0x58E, false, false));
+    bus1.send(makeMessage(0x05F9052D, false, true));
+    bus1.send(makeMessage(0x595, true, false));
+    bus1.send(makeMessage(0x595, true, true));
+    bus1.send(makeMessage(0x563, true, false));
+    bus1.send(makeMessage(0x13358537, true, true));
+    bus1.send(makeMessage(0x563, false, true));  // not filtered
+    bus1.send(makeMessage(0x600, true, false));  // positive filter
+    bus1.send(makeMessage(0x64D, false, true));
+    bus1.send(makeMessage(0x64D, true, false));
+    bus1.send(makeMessage(0x620, false, false));
+    bus1.send(makeMessage(0x620, true, false));
+    bus1.send(makeMessage(0x1069A676, false, true));
+    bus1.send(makeMessage(0x1069A676, true, true));
+    bus1.send(makeMessage(0x62D, false, false));
+    bus1.send(makeMessage(0x62D, false, true));
+    bus1.send(makeMessage(0x6C4, false, false));
+    bus1.send(makeMessage(0x14C76629, false, true));
+    bus1.send(makeMessage(0x689, true, false));
+    bus1.send(makeMessage(0x689, true, true));
+    bus1.send(makeMessage(0x6A4, true, false));
+    bus1.send(makeMessage(0x0BCCA6C2, true, true));
+    bus1.send(makeMessage(0x6A4, false, true));      // not filtered
+    bus1.send(makeMessage(0x04BB1700, true, true));  // positive filter
+    bus1.send(makeMessage(0x784, false, true));
+    bus1.send(makeMessage(0x784, true, false));
+    bus1.send(makeMessage(0x7F9, false, false));
+    bus1.send(makeMessage(0x7F9, true, false));
+    bus1.send(makeMessage(0x0200F77D, false, true));
+    bus1.send(makeMessage(0x0200F77D, true, true));
+    bus1.send(makeMessage(0x783, false, false));
+    bus1.send(makeMessage(0x783, false, true));
+    bus1.send(makeMessage(0x770, false, false));
+    bus1.send(makeMessage(0x06602719, false, true));
+    bus1.send(makeMessage(0x76B, true, false));
+    bus1.send(makeMessage(0x76B, true, true));
+    bus1.send(makeMessage(0x7DF, true, false));
+    bus1.send(makeMessage(0x1939E736, true, true));
+    bus1.send(makeMessage(0x7DF, false, true));  // not filtered
+
+    std::vector<can::V1_0::CanMessage> expectedMixed{
+            makeMessage(0x000, true, true),  // 0x000:0x700, DONT_CARE, DONT_CARE
+            makeMessage(0x0BE, false, true),
+            makeMessage(0x100, false, false),  // 0x100:0x700, DONT_CARE, NOT_SET
+            makeMessage(0x1B8, false, true),
+            makeMessage(0x096A2200, false, true),  // 0x096A2200:0x1FFFFF00, DONT_CARE, SET
+            makeMessage(0x2A5, false, true),
+            makeMessage(0x300, false, false),  // 0x300:0x700, NOT_SET, DONT_CARE
+            makeMessage(0x39E, false, true),
+            makeMessage(0x06C5D400, false, true),  // 0x06C5D400:0x1FFFFF00, NOT_SET, SET
+            makeMessage(0x454, false, true),
+            makeMessage(0x500, true, false),  // 0x500:0x700, SET, DONT_CARE
+            makeMessage(0x563, false, true),
+            makeMessage(0x600, true, false),  // 0x600:0x700, SET, NOT_SET
+            makeMessage(0x6A4, false, true),
+            makeMessage(0x04BB1700, true, true),  // 0x04BB1700:0x1FFFFF00, SET, SET
+            makeMessage(0x7DF, false, true),
+    };
+
+    auto messagesMixed = listenerMixed->fetchMessages(100ms, expectedMixed.size());
+    clearTimestamps(messagesMixed);
+    ASSERT_EQ(expectedMixed, messagesMixed);
+}
+
+}  // namespace android::hardware::automotive::can::V1_0::vts
+
+/**
+ * Example manual invocation:
+ * adb shell /data/nativetest64/VtsHalCanBusVirtualV1_0TargetTest/VtsHalCanBusVirtualV1_0TargetTest\
+ *     --hal_service_instance=android.hardware.automotive.can@1.0::ICanController/socketcan
+ */
+int main(int argc, char** argv) {
+    using android::hardware::automotive::can::V1_0::ICanController;
+    using android::hardware::automotive::can::V1_0::vts::gEnv;
+    using android::hardware::automotive::can::V1_0::vts::utils::SimpleHidlEnvironment;
+    android::base::SetDefaultTag("CanBusVirtualVts");
+    android::base::SetMinimumLogSeverity(android::base::VERBOSE);
+    gEnv = new SimpleHidlEnvironment<ICanController>;
+    ::testing::AddGlobalTestEnvironment(gEnv);
+    ::testing::InitGoogleTest(&argc, argv);
+    gEnv->init(&argc, argv);
+    return RUN_ALL_TESTS();
+}
diff --git a/automotive/can/1.0/vts/functional/VtsHalCanControllerV1_0TargetTest.cpp b/automotive/can/1.0/vts/functional/VtsHalCanControllerV1_0TargetTest.cpp
new file mode 100644
index 0000000..b2edd78
--- /dev/null
+++ b/automotive/can/1.0/vts/functional/VtsHalCanControllerV1_0TargetTest.cpp
@@ -0,0 +1,267 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <VtsHalHidlTargetTestBase.h>
+#include <android-base/logging.h>
+#include <android-base/strings.h>
+#include <android/hardware/automotive/can/1.0/ICanBus.h>
+#include <android/hardware/automotive/can/1.0/ICanController.h>
+#include <android/hardware/automotive/can/1.0/types.h>
+#include <android/hidl/manager/1.2/IServiceManager.h>
+#include <can-vts-utils/bus-enumerator.h>
+#include <can-vts-utils/can-hal-printers.h>
+#include <can-vts-utils/environment-utils.h>
+#include <gmock/gmock.h>
+#include <hidl-utils/hidl-utils.h>
+
+namespace android::hardware::automotive::can::V1_0::vts {
+
+using hardware::hidl_vec;
+using InterfaceType = ICanController::InterfaceType;
+
+static utils::SimpleHidlEnvironment<ICanController>* gEnv = nullptr;
+
+class CanControllerHalTest : public ::testing::VtsHalHidlTargetTestBase {
+  protected:
+    virtual void SetUp() override;
+    virtual void TearDown() override;
+    static void SetUpTestCase();
+
+    hidl_vec<InterfaceType> getSupportedInterfaceTypes();
+    bool isSupported(InterfaceType iftype);
+
+    bool up(InterfaceType iftype, const std::string srvname, std::string ifname,
+            ICanController::Result expected);
+    void assertRegistered(const std::string srvname, bool expectRegistered);
+
+    sp<ICanController> mCanController;
+    static hidl_vec<hidl_string> mBusNames;
+
+  private:
+    static bool mTestCaseInitialized;
+};
+
+hidl_vec<hidl_string> CanControllerHalTest::mBusNames;
+bool CanControllerHalTest::mTestCaseInitialized = false;
+
+void CanControllerHalTest::SetUp() {
+    ASSERT_TRUE(mTestCaseInitialized);
+
+    const auto serviceName = gEnv->getServiceName<ICanController>();
+    mCanController = getService<ICanController>(serviceName);
+    ASSERT_TRUE(mCanController) << "Couldn't open CAN Controller: " << serviceName;
+}
+
+void CanControllerHalTest::TearDown() {
+    mCanController.clear();
+}
+
+void CanControllerHalTest::SetUpTestCase() {
+    mBusNames = utils::getBusNames();
+    ASSERT_NE(0u, mBusNames.size()) << "No ICanBus HALs defined in device manifest";
+
+    mTestCaseInitialized = true;
+}
+
+hidl_vec<InterfaceType> CanControllerHalTest::getSupportedInterfaceTypes() {
+    hidl_vec<InterfaceType> iftypesResult;
+    mCanController->getSupportedInterfaceTypes(hidl_utils::fill(&iftypesResult)).assertOk();
+    return iftypesResult;
+}
+
+bool CanControllerHalTest::isSupported(InterfaceType iftype) {
+    const auto supported = getSupportedInterfaceTypes();
+    return std::find(supported.begin(), supported.end(), iftype) != supported.end();
+}
+
+bool CanControllerHalTest::up(InterfaceType iftype, std::string srvname, std::string ifname,
+                              ICanController::Result expected) {
+    ICanController::BusConfiguration config = {};
+    config.name = srvname;
+    config.iftype = iftype;
+    config.interfaceId.address(ifname);
+
+    const auto upresult = mCanController->upInterface(config);
+
+    if (!isSupported(iftype)) {
+        LOG(INFO) << iftype << " interfaces not supported";
+        EXPECT_EQ(ICanController::Result::NOT_SUPPORTED, upresult);
+        return false;
+    }
+
+    EXPECT_EQ(expected, upresult);
+    return true;
+}
+
+void CanControllerHalTest::assertRegistered(std::string srvname, bool expectRegistered) {
+    /* Not using ICanBus::tryGetService here, since it ignores interfaces not in the manifest
+     * file -- this is a test, so we don't want to add dummy services to a device manifest. */
+    auto manager = hidl::manager::V1_2::IServiceManager::getService();
+    auto busService = manager->get(ICanBus::descriptor, srvname);
+    ASSERT_EQ(expectRegistered, busService.withDefault(nullptr) != nullptr)
+            << "ICanBus/" << srvname << (expectRegistered ? " is not " : " is ") << "registered"
+            << " (should be otherwise)";
+}
+
+TEST_F(CanControllerHalTest, SupportsSomething) {
+    const auto supported = getSupportedInterfaceTypes();
+    ASSERT_GT(supported.size(), 0u);
+}
+
+TEST_F(CanControllerHalTest, BringUpDown) {
+    const std::string name = mBusNames[0];
+
+    assertRegistered(name, false);
+    if (!up(InterfaceType::VIRTUAL, name, "vcan57", ICanController::Result::OK)) GTEST_SKIP();
+    assertRegistered(name, true);
+
+    const auto dnresult = mCanController->downInterface(name);
+    ASSERT_TRUE(dnresult);
+
+    assertRegistered(name, false);
+}
+
+TEST_F(CanControllerHalTest, DownDummy) {
+    const auto result = mCanController->downInterface("imnotup");
+    ASSERT_FALSE(result);
+}
+
+TEST_F(CanControllerHalTest, UpTwice) {
+    const std::string name = mBusNames[0];
+
+    assertRegistered(name, false);
+    if (!up(InterfaceType::VIRTUAL, name, "vcan72", ICanController::Result::OK)) GTEST_SKIP();
+    assertRegistered(name, true);
+    if (!up(InterfaceType::VIRTUAL, name, "vcan73", ICanController::Result::INVALID_STATE)) {
+        GTEST_SKIP();
+    }
+    assertRegistered(name, true);
+
+    const auto result = mCanController->downInterface(name);
+    ASSERT_TRUE(result);
+    assertRegistered(name, false);
+}
+
+TEST_F(CanControllerHalTest, IdentifierCompatibility) {
+    using IdDisc = ICanController::BusConfiguration::InterfaceIdentifier::hidl_discriminator;
+    static const std::map<InterfaceType, std::vector<IdDisc>> compatMatrix = {
+            {InterfaceType::VIRTUAL, {IdDisc::address}},
+            {InterfaceType::SOCKETCAN, {IdDisc::address, IdDisc::serialno}},
+            {InterfaceType::SLCAN, {IdDisc::address, IdDisc::serialno}},
+            {InterfaceType::INDEXED, {IdDisc::index}},
+    };
+    static const std::vector<IdDisc> allDisc = {IdDisc::address, IdDisc::index, IdDisc::serialno};
+
+    for (const auto [iftype, supported] : compatMatrix) {
+        for (const auto iddisc : allDisc) {
+            LOG(INFO) << "Compatibility testing: " << iftype << " / " << iddisc;
+
+            ICanController::BusConfiguration config = {};
+            config.name = "compattestsrv";
+            config.iftype = iftype;
+            config.bitrate = 125000;
+
+            // using random-ish addresses, which may not be valid - we can't test the success case
+            if (iddisc == IdDisc::address) {
+                config.interfaceId.address("can0");
+            } else if (iddisc == IdDisc::index) {
+                config.interfaceId.index(0);
+            } else if (iddisc == IdDisc::serialno) {
+                config.interfaceId.serialno({"dummy", "dummier"});
+            }
+
+            const auto upresult = mCanController->upInterface(config);
+
+            if (!isSupported(iftype)) {
+                ASSERT_EQ(ICanController::Result::NOT_SUPPORTED, upresult);
+                continue;
+            }
+            ASSERT_NE(ICanController::Result::NOT_SUPPORTED, upresult);
+
+            bool isSupportedDisc =
+                    std::find(supported.begin(), supported.end(), iddisc) != supported.end();
+            if (!isSupportedDisc) {
+                ASSERT_EQ(ICanController::Result::BAD_ADDRESS, upresult);
+                continue;
+            }
+
+            if (upresult == ICanController::Result::OK) {
+                const auto dnresult = mCanController->downInterface(config.name);
+                ASSERT_TRUE(dnresult);
+                continue;
+            }
+        }
+    }
+}
+
+TEST_F(CanControllerHalTest, FailEmptyName) {
+    const std::string name = "";
+
+    assertRegistered(name, false);
+    if (!up(InterfaceType::VIRTUAL, name, "vcan57", ICanController::Result::UNKNOWN_ERROR)) {
+        GTEST_SKIP();
+    }
+    assertRegistered(name, false);
+}
+
+TEST_F(CanControllerHalTest, FailBadName) {
+    // 33 characters (name can be at most 32 characters long)
+    const std::string name = "ab012345678901234567890123456789c";
+
+    assertRegistered(name, false);
+    if (!up(InterfaceType::VIRTUAL, name, "vcan57", ICanController::Result::UNKNOWN_ERROR)) {
+        GTEST_SKIP();
+    }
+    assertRegistered(name, false);
+}
+
+TEST_F(CanControllerHalTest, FailBadVirtualAddress) {
+    const std::string name = mBusNames[0];
+
+    assertRegistered(name, false);
+    if (!up(InterfaceType::VIRTUAL, name, "", ICanController::Result::BAD_ADDRESS)) GTEST_SKIP();
+    assertRegistered(name, false);
+}
+
+TEST_F(CanControllerHalTest, FailBadSocketcanAddress) {
+    const std::string name = mBusNames[0];
+
+    assertRegistered(name, false);
+    if (!up(InterfaceType::SOCKETCAN, name, "can87", ICanController::Result::BAD_ADDRESS)) {
+        GTEST_SKIP();
+    }
+    assertRegistered(name, false);
+}
+
+}  // namespace android::hardware::automotive::can::V1_0::vts
+
+/**
+ * Example manual invocation:
+ * adb shell /data/nativetest64/VtsHalCanControllerV1_0TargetTest/VtsHalCanControllerV1_0TargetTest\
+ *     --hal_service_instance=android.hardware.automotive.can@1.0::ICanController/socketcan
+ */
+int main(int argc, char** argv) {
+    using android::hardware::automotive::can::V1_0::ICanController;
+    using android::hardware::automotive::can::V1_0::vts::gEnv;
+    using android::hardware::automotive::can::V1_0::vts::utils::SimpleHidlEnvironment;
+    android::base::SetDefaultTag("CanControllerVts");
+    android::base::SetMinimumLogSeverity(android::base::VERBOSE);
+    gEnv = new SimpleHidlEnvironment<ICanController>;
+    ::testing::AddGlobalTestEnvironment(gEnv);
+    ::testing::InitGoogleTest(&argc, argv);
+    gEnv->init(&argc, argv);
+    return RUN_ALL_TESTS();
+}
diff --git a/automotive/can/1.0/vts/utils/Android.bp b/automotive/can/1.0/vts/utils/Android.bp
new file mode 100644
index 0000000..d03ead3
--- /dev/null
+++ b/automotive/can/1.0/vts/utils/Android.bp
@@ -0,0 +1,30 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_library_static {
+    name: "android.hardware.automotive.can@vts-utils-lib",
+    defaults: ["android.hardware.automotive.can@defaults"],
+    srcs: [
+        "bus-enumerator.cpp",
+    ],
+    export_include_dirs: ["include"],
+    header_libs: [
+        "android.hardware.automotive.can@hidl-utils-lib",
+    ],
+    static_libs: [
+        "android.hardware.automotive.can@1.0",
+    ],
+}
diff --git a/automotive/can/1.0/vts/utils/bus-enumerator.cpp b/automotive/can/1.0/vts/utils/bus-enumerator.cpp
new file mode 100644
index 0000000..c012dd2
--- /dev/null
+++ b/automotive/can/1.0/vts/utils/bus-enumerator.cpp
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android/hidl/manager/1.2/IServiceManager.h>
+#include <can-vts-utils/bus-enumerator.h>
+#include <hidl-utils/hidl-utils.h>
+
+namespace android::hardware::automotive::can::V1_0::vts::utils {
+
+hidl_vec<hidl_string> getBusNames() {
+    auto manager = hidl::manager::V1_2::IServiceManager::getService();
+    hidl_vec<hidl_string> services;
+    manager->listManifestByInterface(ICanBus::descriptor, hidl_utils::fill(&services));
+    return services;
+}
+
+}  // namespace android::hardware::automotive::can::V1_0::vts::utils
diff --git a/automotive/can/1.0/vts/utils/include/can-vts-utils/bus-enumerator.h b/automotive/can/1.0/vts/utils/include/can-vts-utils/bus-enumerator.h
new file mode 100644
index 0000000..ef385eb
--- /dev/null
+++ b/automotive/can/1.0/vts/utils/include/can-vts-utils/bus-enumerator.h
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android/hardware/automotive/can/1.0/ICanBus.h>
+
+namespace android::hardware::automotive::can::V1_0::vts::utils {
+
+hidl_vec<hidl_string> getBusNames();
+
+}  // namespace android::hardware::automotive::can::V1_0::vts::utils
diff --git a/automotive/can/1.0/vts/utils/include/can-vts-utils/can-hal-printers.h b/automotive/can/1.0/vts/utils/include/can-vts-utils/can-hal-printers.h
new file mode 100644
index 0000000..3c30744
--- /dev/null
+++ b/automotive/can/1.0/vts/utils/include/can-vts-utils/can-hal-printers.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android/hardware/automotive/can/1.0/ICanController.h>
+
+namespace android::hardware::automotive::can::V1_0 {
+
+/**
+ * Define gTest printer for a given HIDL type, but skip definition for Return<T>.
+ */
+#define DEFINE_CAN_HAL_PRINTER_SIMPLE(T, converter) \
+    std::ostream& operator<<(std::ostream& os, const T& v) { return os << converter(v); }
+
+/**
+ * Define gTest printer for a given HIDL type.
+ */
+#define DEFINE_CAN_HAL_PRINTER(T, converter)    \
+    DEFINE_CAN_HAL_PRINTER_SIMPLE(T, converter) \
+    std::ostream& operator<<(std::ostream& os, const Return<T>& v) { return os << converter(v); }
+
+DEFINE_CAN_HAL_PRINTER(CanMessage, toString)
+DEFINE_CAN_HAL_PRINTER(ErrorEvent, toString)
+DEFINE_CAN_HAL_PRINTER_SIMPLE(
+        ICanController::BusConfiguration::InterfaceIdentifier::hidl_discriminator, int)
+DEFINE_CAN_HAL_PRINTER(ICanController::InterfaceType, toString)
+DEFINE_CAN_HAL_PRINTER(ICanController::Result, toString)
+DEFINE_CAN_HAL_PRINTER(Result, toString)
+
+#undef DEFINE_CAN_HAL_PRINTER
+#undef DEFINE_CAN_HAL_PRINTER_SIMPLE
+
+}  // namespace android::hardware::automotive::can::V1_0
diff --git a/automotive/can/1.0/vts/utils/include/can-vts-utils/environment-utils.h b/automotive/can/1.0/vts/utils/include/can-vts-utils/environment-utils.h
new file mode 100644
index 0000000..3eb9cc1
--- /dev/null
+++ b/automotive/can/1.0/vts/utils/include/can-vts-utils/environment-utils.h
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <VtsHalHidlTargetTestEnvBase.h>
+
+namespace android::hardware::automotive::can::V1_0::vts::utils {
+
+/**
+ * Simple test environment.
+ *
+ * This is a helper class to instantiate a test environment without boilerplate code for cases where
+ * there is no need to pass more parameters than just HIDL service instance name.
+ *
+ * The class implements registerTestServices() by calling registerTestService() on every HIDL
+ * interface provided as parameter to this template.
+ *
+ * Example usage:
+ *     static utils::SimpleHidlEnvironment<IMyService>* gEnv = nullptr;
+ *
+ *     void CanBusHalTest::SetUp() {
+ *         const auto serviceName = gEnv->getServiceName<IMyService>();
+ *         (...)
+ *     }
+ *
+ *     int main(int argc, char** argv) {
+ *         gEnv = new SimpleHidlEnvironment<IMyService>;
+ *         ::testing::AddGlobalTestEnvironment(gEnv);
+ *         ::testing::InitGoogleTest(&argc, argv);
+ *         gEnv->init(&argc, argv);
+ *         return RUN_ALL_TESTS();
+ *     }
+ *
+ * \param T... HIDL interface names to register for a test service
+ */
+template <typename... T>
+class SimpleHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
+  public:
+    virtual void registerTestServices() override {
+        // Call registerTestService() for every HIDL interface using this template.
+        using expander = int[];
+        (void)expander{0, (registerTestService<T>(), 0)...};
+    }
+};
+
+}  // namespace android::hardware::automotive::can::V1_0::vts::utils
diff --git a/automotive/evs/1.0/IEvsCamera.hal b/automotive/evs/1.0/IEvsCamera.hal
index dbcaf92..464dafb 100644
--- a/automotive/evs/1.0/IEvsCamera.hal
+++ b/automotive/evs/1.0/IEvsCamera.hal
@@ -16,7 +16,6 @@
 
 package android.hardware.automotive.evs@1.0;
 
-import types;
 import IEvsCameraStream;
 
 
@@ -28,8 +27,8 @@
     /**
      * Returns the ID of this camera.
      *
-     * Returns the description of this camera. This must be the same value as reported
-     * by EvsEnumerator::getCamerList().
+     * @return info The description of this camera.  This must be the same value as
+     *              reported by EvsEnumerator::getCameraList().
      */
     getCameraInfo() generates (CameraDesc info);
 
@@ -43,16 +42,20 @@
      * in which case buffers should be added or removed from the chain as appropriate.
      * If no call is made to this entry point, the IEvsCamera must support at least one
      * frame by default. More is acceptable.
-     * BUFFER_NOT_AVAILABLE is returned if the implementation cannot support the
-     * requested number of concurrent frames.
+     *
+     * @param  bufferCount Number of buffers the client of IEvsCamera may hold concurrently.
+     * @return result EvsResult::OK is returned if this call is successful.
      */
     setMaxFramesInFlight(uint32_t bufferCount) generates (EvsResult result);
 
     /**
-     * Request delivery of EVS camera frames from this camera.
+     * Request to start EVS camera stream from this camera.
      *
-     * The IEvsCameraStream must begin receiving periodic calls with new image
-     * frames until stopVideoStream() is called.
+     * The IEvsCameraStream must begin receiving calls with various events
+     * including new image frame ready until stopVideoStream() is called.
+     *
+     * @param  receiver IEvsCameraStream implementation.
+     * @return result EvsResult::OK is returned if this call is successful.
      */
     startVideoStream(IEvsCameraStream receiver) generates (EvsResult result);
 
@@ -64,6 +67,8 @@
      * A small, finite number of buffers are available (possibly as small
      * as one), and if the supply is exhausted, no further frames may be
      * delivered until a buffer is returned.
+     *
+     * @param  buffer A buffer to be returned.
      */
     oneway doneWithFrame(BufferDesc buffer);
 
@@ -83,6 +88,11 @@
      * The values allowed for opaqueIdentifier are driver specific,
      * but no value passed in may crash the driver. The driver should
      * return 0 for any unrecognized opaqueIdentifier.
+     *
+     * @param  opaqueIdentifier An unique identifier of the information to
+     *                          request.
+     * @return value            Requested information.  Zero is returned if the
+     *                          driver does not recognize a given identifier.
      */
     getExtendedInfo(uint32_t opaqueIdentifier) generates (int32_t value);
 
@@ -94,6 +104,11 @@
      * in order to function in a default state.
      * INVALID_ARG is returned if the opaqueValue is not meaningful to
      * the driver implementation.
+     *
+     * @param  opaqueIdentifier An unique identifier of the information to
+     *                          program.
+     *         opaqueValue      A value to program.
+     * @return result           EvsResult::OK is returned if this call is successful.
      */
     setExtendedInfo(uint32_t opaqueIdentifier, int32_t opaqueValue) generates (EvsResult result);
 };
diff --git a/automotive/evs/1.0/IEvsCameraStream.hal b/automotive/evs/1.0/IEvsCameraStream.hal
index 4e743b2..ec18f6a 100644
--- a/automotive/evs/1.0/IEvsCameraStream.hal
+++ b/automotive/evs/1.0/IEvsCameraStream.hal
@@ -31,6 +31,8 @@
      * When the last frame in the stream has been delivered, a NULL bufferHandle
      * must be delivered, signifying the end of the stream. No further frame
      * deliveries may happen thereafter.
+     *
+     * @param buffer a buffer descriptor of a delivered image frame.
      */
     oneway deliverFrame(BufferDesc buffer);
 };
diff --git a/automotive/evs/1.0/IEvsDisplay.hal b/automotive/evs/1.0/IEvsDisplay.hal
index 12541f3..72f767e 100644
--- a/automotive/evs/1.0/IEvsDisplay.hal
+++ b/automotive/evs/1.0/IEvsDisplay.hal
@@ -16,8 +16,6 @@
 
 package android.hardware.automotive.evs@1.0;
 
-import types;
-
 
 /**
  * Represents a single camera and is the primary interface for capturing images.
@@ -28,6 +26,9 @@
      * Returns basic information about the EVS display provided by the system.
      *
      * See the description of the DisplayDesc structure for details.
+     *
+     * @return info The description of this display.  Please see the description
+     *              of the DisplayDesc structure for details.
      */
      getDisplayInfo() generates (DisplayDesc info);
 
@@ -42,6 +43,9 @@
      * video. When the display is no longer required, the client is expected to request
      * the NOT_VISIBLE state after passing the last video frame.
      * Returns INVALID_ARG if the requested state is not a recognized value.
+     *
+     * @param  state  Desired new DisplayState.
+     * @return result EvsResult::OK is returned if this call is successful.
      */
      setDisplayState(DisplayState state) generates (EvsResult result);
 
@@ -54,6 +58,8 @@
      * the logic responsible for changing display states should generally live above
      * the device layer, making it undesirable for the HAL implementation to spontaneously
      * change display states.
+     *
+     * @return state Current DisplayState of this Display.
      */
      getDisplayState() generates (DisplayState state);
 
@@ -61,9 +67,11 @@
     /**
      * This call returns a handle to a frame buffer associated with the display.
      *
-     * The returned buffer may be locked and written to by software and/or GL. This buffer
-     * must be returned via a call to returnTargetBufferForDisplay() even if the
-     * display is no longer visible.
+     * @return buffer A handle to a frame buffer.  The returned buffer may be
+     *                locked and written to by software and/or GL.  This buffer
+     *                must be returned via a call to
+     *                returnTargetBufferForDisplay() even if the display is no
+     *                longer visible.
      */
      getTargetBuffer() generates (BufferDesc buffer);
 
@@ -75,6 +83,9 @@
      * There is no maximum time the caller may hold onto the buffer before making this
      * call. The buffer may be returned at any time and in any DisplayState, but all
      * buffers are expected to be returned before the IEvsDisplay interface is destroyed.
+     *
+     * @param  buffer A buffer handle to the frame that is ready for display.
+     * @return result EvsResult::OK is returned if this call is successful.
      */
     returnTargetBufferForDisplay(BufferDesc buffer) generates (EvsResult result);
 };
diff --git a/automotive/evs/1.0/IEvsEnumerator.hal b/automotive/evs/1.0/IEvsEnumerator.hal
index ee51e7e..e5633df 100644
--- a/automotive/evs/1.0/IEvsEnumerator.hal
+++ b/automotive/evs/1.0/IEvsEnumerator.hal
@@ -16,7 +16,6 @@
 
 package android.hardware.automotive.evs@1.0;
 
-import types;
 import IEvsCamera;
 import IEvsDisplay;
 
@@ -28,6 +27,8 @@
 
     /**
      * Returns a list of all EVS cameras available to the system
+     *
+     * @return cameras A list of cameras availale for EVS service.
      */
     getCameraList() generates (vec<CameraDesc> cameras);
 
@@ -37,9 +38,9 @@
      * Given a camera's unique cameraId from CameraDesc, returns the
      * IEvsCamera interface associated with the specified camera. When
      * done using the camera, the caller may release it by calling closeCamera().
-     * Note: Reliance on the sp<> going out of scope is not recommended
-     * because the resources may not be released right away due to asynchronos
-     * behavior in the hardware binder (ref b/36122635).
+     *
+     * @param  cameraId  A unique identifier of the camera.
+     * @return carCamera EvsCamera object associated with a given cameraId.
      */
     openCamera(string cameraId) generates (IEvsCamera carCamera);
 
@@ -48,6 +49,8 @@
      *
      * When the IEvsCamera object is no longer required, it must be released.
      * NOTE: Video streaming must be cleanly stopped before making this call.
+     *
+     * @param  carCamera EvsCamera object to be closed.
      */
     closeCamera(IEvsCamera carCamera);
 
@@ -60,8 +63,8 @@
      * the old instance shall be closed and give the new caller exclusive
      * access.
      * When done using the display, the caller may release it by calling closeDisplay().
-     * TODO(b/36122635) Reliance on the sp<> going out of scope is not recommended because the
-     * resources may not be released right away due to asynchronos behavior in the hardware binder.
+     *
+     * @return display EvsDisplay object to be used.
      */
     openDisplay() generates (IEvsDisplay display);
 
@@ -70,6 +73,8 @@
      *
      * When the IEvsDisplay object is no longer required, it must be released.
      * NOTE: All buffers must have been returned to the display before making this call.
+     *
+     * @param  display EvsDisplay object to be closed.
      */
     closeDisplay(IEvsDisplay display);
 
@@ -80,6 +85,8 @@
      * the actual state of the active display.  This call is replicated on the IEvsEnumerator
      * interface in order to allow secondary clients to monitor the state of the EVS display
      * without acquiring exclusive ownership of the display.
+     *
+     * @return state Current DisplayState of this Display.
      */
     getDisplayState() generates (DisplayState state);
 };
diff --git a/automotive/evs/1.0/default/android.hardware.automotive.evs@1.0-service.rc b/automotive/evs/1.0/default/android.hardware.automotive.evs@1.0-service.rc
index 117c249..8dcd969 100644
--- a/automotive/evs/1.0/default/android.hardware.automotive.evs@1.0-service.rc
+++ b/automotive/evs/1.0/default/android.hardware.automotive.evs@1.0-service.rc
@@ -2,3 +2,4 @@
     class hal
     user automotive_evs
     group automotive_evs
+    disabled # do not start automatically
diff --git a/automotive/evs/1.0/types.hal b/automotive/evs/1.0/types.hal
index 7cebf6d..1efd5eb 100644
--- a/automotive/evs/1.0/types.hal
+++ b/automotive/evs/1.0/types.hal
@@ -24,8 +24,15 @@
  * EVS camera in the system.
  */
 struct CameraDesc {
+    /* Unique identifier for camera devices.  This may be a path to detected
+     * camera device; for example, "/dev/video0".
+     */
     string      cameraId;
-    uint32_t    vendorFlags;    // Opaque value from driver
+
+    /* Opaque value from driver.  Vendor may use this field to store additional
+     * information; for example, sensor and bridge chip id.
+     */
+    uint32_t    vendorFlags;
 };
 
 
@@ -38,8 +45,11 @@
  * presentation device.
  */
 struct DisplayDesc {
+    /* Unique identifier for the display */
     string      displayId;
-    uint32_t    vendorFlags;    // Opaque value from driver
+
+    /* Opaque value from driver */
+    uint32_t    vendorFlags;
 };
 
 
@@ -56,14 +66,31 @@
  *        Specifically consider if format and/or usage should become enumerated types.
  */
 struct BufferDesc {
-    uint32_t    width;      // Units of pixels
-    uint32_t    height;     // Units of pixels
-    uint32_t    stride;     // Units of pixels to match gralloc
-    uint32_t    pixelSize;  // Units of bytes
-    uint32_t    format;     // May contain values from android_pixel_format_t
-    uint32_t    usage;      // May contain values from from Gralloc.h
-    uint32_t    bufferId;   // Opaque value from driver
-    handle      memHandle;  // gralloc memory buffer handle
+    /* A frame width in the units of pixels */
+    uint32_t    width;
+
+    /* A frame height in the units of pixels */
+    uint32_t    height;
+
+    /* A frame stride in the units of pixels, to match gralloc */
+    uint32_t    stride;
+
+    /* The size of a pixel in the units of bytes */
+    uint32_t    pixelSize;
+
+    /* The image format of the frame; may contain values from
+     * android_pixel_format_t
+     */
+    uint32_t    format;
+
+    /* May contain values from Gralloc.h */
+    uint32_t    usage;
+
+    /* Opaque value from driver */
+    uint32_t    bufferId;
+
+    /* Gralloc memory buffer handle */
+    handle      memHandle;
 };
 
 
@@ -77,12 +104,23 @@
  * presentation device.
  */
 enum DisplayState : uint32_t {
-    NOT_OPEN = 0,           // Display has not been requested by any application
-    NOT_VISIBLE,            // Display is inhibited
-    VISIBLE_ON_NEXT_FRAME,  // Will become visible with next frame
-    VISIBLE,                // Display is currently active
-    DEAD,                   // Driver is in an undefined state.  Interface should be closed.
-    NUM_STATES              // Must be last
+    /* Display has not been requested by any application yet */
+    NOT_OPEN = 0,
+
+    /* Display is inhibited */
+    NOT_VISIBLE,
+
+    /* Will become visible with next frame */
+    VISIBLE_ON_NEXT_FRAME,
+
+    /* Display is currently active */
+    VISIBLE,
+
+    /* Driver is in an undefined state.  Interface should be closed. */
+    DEAD,
+
+    /* Must be the last */
+    NUM_STATES
 };
 
 
diff --git a/automotive/evs/1.0/vts/functional/Android.bp b/automotive/evs/1.0/vts/functional/Android.bp
index 2ef33fd..8988bfd 100644
--- a/automotive/evs/1.0/vts/functional/Android.bp
+++ b/automotive/evs/1.0/vts/functional/Android.bp
@@ -19,13 +19,15 @@
     srcs: [
         "VtsHalEvsV1_0TargetTest.cpp",
         "FrameHandler.cpp",
-        "FormatConvert.cpp"
     ],
     defaults: ["VtsHalTargetTestDefaults"],
     shared_libs: [
         "libui",
     ],
-    static_libs: ["android.hardware.automotive.evs@1.0"],
+    static_libs: [
+        "android.hardware.automotive.evs@1.0",
+        "android.hardware.automotive.evs@common-default-lib",
+    ],
     test_suites: ["general-tests"],
     cflags: [
         "-O0",
diff --git a/automotive/evs/1.0/vts/functional/FormatConvert.cpp b/automotive/evs/1.0/vts/functional/FormatConvert.cpp
deleted file mode 100644
index 3d82d32..0000000
--- a/automotive/evs/1.0/vts/functional/FormatConvert.cpp
+++ /dev/null
@@ -1,206 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#define LOG_TAG "VtsHalEvsTest"
-
-#include "FormatConvert.h"
-
-
-// Round up to the nearest multiple of the given alignment value
-template<unsigned alignment>
-int align(int value) {
-    static_assert((alignment && !(alignment & (alignment - 1))),
-                  "alignment must be a power of 2");
-
-    unsigned mask = alignment - 1;
-    return (value + mask) & ~mask;
-}
-
-
-// Limit the given value to the provided range.  :)
-static inline float clamp(float v, float min, float max) {
-    if (v < min) return min;
-    if (v > max) return max;
-    return v;
-}
-
-
-static uint32_t yuvToRgbx(const unsigned char Y, const unsigned char Uin, const unsigned char Vin,
-                          bool bgrxFormat = false) {
-    // Don't use this if you want to see the best performance.  :)
-    // Better to do this in a pixel shader if we really have to, but on actual
-    // embedded hardware we expect to be able to texture directly from the YUV data
-    float U = Uin - 128.0f;
-    float V = Vin - 128.0f;
-
-    float Rf = Y + 1.140f*V;
-    float Gf = Y - 0.395f*U - 0.581f*V;
-    float Bf = Y + 2.032f*U;
-    unsigned char R = (unsigned char)clamp(Rf, 0.0f, 255.0f);
-    unsigned char G = (unsigned char)clamp(Gf, 0.0f, 255.0f);
-    unsigned char B = (unsigned char)clamp(Bf, 0.0f, 255.0f);
-
-    if (!bgrxFormat) {
-        return (R      ) |
-               (G <<  8) |
-               (B << 16) |
-               0xFF000000;  // Fill the alpha channel with ones
-    } else {
-        return (R << 16) |
-               (G <<  8) |
-               (B      ) |
-               0xFF000000;  // Fill the alpha channel with ones
-    }
-}
-
-
-void copyNV21toRGB32(unsigned width, unsigned height,
-                     uint8_t* src,
-                     uint32_t* dst, unsigned dstStridePixels,
-                     bool bgrxFormat)
-{
-    // The NV21 format provides a Y array of 8bit values, followed by a 1/2 x 1/2 interleaved
-    // U/V array.  It assumes an even width and height for the overall image, and a horizontal
-    // stride that is an even multiple of 16 bytes for both the Y and UV arrays.
-    unsigned strideLum = align<16>(width);
-    unsigned sizeY = strideLum * height;
-    unsigned strideColor = strideLum;   // 1/2 the samples, but two interleaved channels
-    unsigned offsetUV = sizeY;
-
-    uint8_t* srcY = src;
-    uint8_t* srcUV = src+offsetUV;
-
-    for (unsigned r = 0; r < height; r++) {
-        // Note that we're walking the same UV row twice for even/odd luminance rows
-        uint8_t* rowY  = srcY  + r*strideLum;
-        uint8_t* rowUV = srcUV + (r/2 * strideColor);
-
-        uint32_t* rowDest = dst + r*dstStridePixels;
-
-        for (unsigned c = 0; c < width; c++) {
-            unsigned uCol = (c & ~1);   // uCol is always even and repeats 1:2 with Y values
-            unsigned vCol = uCol | 1;   // vCol is always odd
-            rowDest[c] = yuvToRgbx(rowY[c], rowUV[uCol], rowUV[vCol], bgrxFormat);
-        }
-    }
-}
-
-
-void copyYV12toRGB32(unsigned width, unsigned height,
-                     uint8_t* src,
-                     uint32_t* dst, unsigned dstStridePixels,
-                     bool bgrxFormat)
-{
-    // The YV12 format provides a Y array of 8bit values, followed by a 1/2 x 1/2 U array, followed
-    // by another 1/2 x 1/2 V array.  It assumes an even width and height for the overall image,
-    // and a horizontal stride that is an even multiple of 16 bytes for each of the Y, U,
-    // and V arrays.
-    unsigned strideLum = align<16>(width);
-    unsigned sizeY = strideLum * height;
-    unsigned strideColor = align<16>(strideLum/2);
-    unsigned sizeColor = strideColor * height/2;
-    unsigned offsetU = sizeY;
-    unsigned offsetV = sizeY + sizeColor;
-
-    uint8_t* srcY = src;
-    uint8_t* srcU = src+offsetU;
-    uint8_t* srcV = src+offsetV;
-
-    for (unsigned r = 0; r < height; r++) {
-        // Note that we're walking the same U and V rows twice for even/odd luminance rows
-        uint8_t* rowY = srcY + r*strideLum;
-        uint8_t* rowU = srcU + (r/2 * strideColor);
-        uint8_t* rowV = srcV + (r/2 * strideColor);
-
-        uint32_t* rowDest = dst + r*dstStridePixels;
-
-        for (unsigned c = 0; c < width; c++) {
-            rowDest[c] = yuvToRgbx(rowY[c], rowU[c], rowV[c], bgrxFormat);
-        }
-    }
-}
-
-
-void copyYUYVtoRGB32(unsigned width, unsigned height,
-                     uint8_t* src, unsigned srcStridePixels,
-                     uint32_t* dst, unsigned dstStridePixels,
-                     bool bgrxFormat)
-{
-    uint32_t* srcWords = (uint32_t*)src;
-
-    const int srcRowPadding32 = srcStridePixels/2 - width/2;  // 2 bytes per pixel, 4 bytes per word
-    const int dstRowPadding32 = dstStridePixels   - width;    // 4 bytes per pixel, 4 bytes per word
-
-    for (unsigned r = 0; r < height; r++) {
-        for (unsigned c = 0; c < width/2; c++) {
-            // Note:  we're walking two pixels at a time here (even/odd)
-            uint32_t srcPixel = *srcWords++;
-
-            uint8_t Y1 = (srcPixel)       & 0xFF;
-            uint8_t U  = (srcPixel >> 8)  & 0xFF;
-            uint8_t Y2 = (srcPixel >> 16) & 0xFF;
-            uint8_t V  = (srcPixel >> 24) & 0xFF;
-
-            // On the RGB output, we're writing one pixel at a time
-            *(dst+0) = yuvToRgbx(Y1, U, V, bgrxFormat);
-            *(dst+1) = yuvToRgbx(Y2, U, V, bgrxFormat);
-            dst += 2;
-        }
-
-        // Skip over any extra data or end of row alignment padding
-        srcWords += srcRowPadding32;
-        dst += dstRowPadding32;
-    }
-}
-
-
-void copyNV21toBGR32(unsigned width, unsigned height,
-                     uint8_t* src,
-                     uint32_t* dst, unsigned dstStridePixels)
-{
-    return copyNV21toRGB32(width, height, src, dst, dstStridePixels, true);
-}
-
-
-void copyYV12toBGR32(unsigned width, unsigned height,
-                     uint8_t* src,
-                     uint32_t* dst, unsigned dstStridePixels)
-{
-    return copyYV12toRGB32(width, height, src, dst, dstStridePixels, true);
-}
-
-
-void copyYUYVtoBGR32(unsigned width, unsigned height,
-                     uint8_t* src, unsigned srcStridePixels,
-                     uint32_t* dst, unsigned dstStridePixels)
-{
-    return copyYUYVtoRGB32(width, height, src, srcStridePixels, dst, dstStridePixels, true);
-}
-
-
-void copyMatchedInterleavedFormats(unsigned width, unsigned height,
-                                   void* src, unsigned srcStridePixels,
-                                   void* dst, unsigned dstStridePixels,
-                                   unsigned pixelSize) {
-    for (unsigned row = 0; row < height; row++) {
-        // Copy the entire row of pixel data
-        memcpy(dst, src, width * pixelSize);
-
-        // Advance to the next row (keeping in mind that stride here is in units of pixels)
-        src = (uint8_t*)src + srcStridePixels * pixelSize;
-        dst = (uint8_t*)dst + dstStridePixels * pixelSize;
-    }
-}
diff --git a/automotive/evs/1.0/vts/functional/FormatConvert.h b/automotive/evs/1.0/vts/functional/FormatConvert.h
deleted file mode 100644
index 4a94f99..0000000
--- a/automotive/evs/1.0/vts/functional/FormatConvert.h
+++ /dev/null
@@ -1,74 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef EVS_VTS_FORMATCONVERT_H
-#define EVS_VTS_FORMATCONVERT_H
-
-#include <queue>
-#include <stdint.h>
-
-
-// Given an image buffer in NV21 format (HAL_PIXEL_FORMAT_YCRCB_420_SP), output 32bit RGBx/BGRx
-// values.  The NV21 format provides a Y array of 8bit values, followed by a 1/2 x 1/2 interleaved
-// U/V array.  It assumes an even width and height for the overall image, and a horizontal
-// stride that is an even multiple of 16 bytes for both the Y and UV arrays.
-void copyNV21toRGB32(unsigned width, unsigned height,
-                     uint8_t* src,
-                     uint32_t* dst, unsigned dstStridePixels,
-                     bool bgrxFormat = false);
-
-void copyNV21toBGR32(unsigned width, unsigned height,
-                     uint8_t* src,
-                     uint32_t* dst, unsigned dstStridePixels);
-
-
-// Given an image buffer in YV12 format (HAL_PIXEL_FORMAT_YV12), output 32bit RGBx/BGRx values.
-// The YV12 format provides a Y array of 8bit values, followed by a 1/2 x 1/2 U array, followed
-// by another 1/2 x 1/2 V array.  It assumes an even width and height for the overall image,
-// and a horizontal stride that is an even multiple of 16 bytes for each of the Y, U,
-// and V arrays.
-void copyYV12toRGB32(unsigned width, unsigned height,
-                     uint8_t* src,
-                     uint32_t* dst, unsigned dstStridePixels,
-                     bool bgrxFormat = false);
-
-void copyYV12toBGR32(unsigned width, unsigned height,
-                     uint8_t* src,
-                     uint32_t* dst, unsigned dstStridePixels);
-
-// Given an image buffer in YUYV format (HAL_PIXEL_FORMAT_YCBCR_422_I), output 32bit RGBx/BGRx
-// values.  The NV21 format provides a Y array of 8bit values, followed by a 1/2 x 1/2 interleaved
-// U/V array.  It assumes an even width and height for the overall image, and a horizontal
-// stride that is an even multiple of 16 bytes for both the Y and UV arrays.
-void copyYUYVtoRGB32(unsigned width, unsigned height,
-                     uint8_t* src, unsigned srcStrideBytes,
-                     uint32_t* dst, unsigned dstStrideBytes,
-                     bool bgrxFormat = false);
-
-void copyYUYVtoBGR32(unsigned width, unsigned height,
-                     uint8_t* src, unsigned srcStrideBytes,
-                     uint32_t* dst, unsigned dstStrideBytes);
-
-
-// Given an simple rectangular image buffer with an integer number of bytes per pixel,
-// copy the pixel values into a new rectangular buffer (potentially with a different stride).
-// This is typically used to copy RGBx data into an RGBx output buffer.
-void copyMatchedInterleavedFormats(unsigned width, unsigned height,
-                                   void* src, unsigned srcStridePixels,
-                                   void* dst, unsigned dstStridePixels,
-                                   unsigned pixelSize);
-
-#endif // EVS_VTS_FORMATCONVERT_H
diff --git a/automotive/evs/1.0/vts/functional/FrameHandler.cpp b/automotive/evs/1.0/vts/functional/FrameHandler.cpp
index bc3790f..6a01a44 100644
--- a/automotive/evs/1.0/vts/functional/FrameHandler.cpp
+++ b/automotive/evs/1.0/vts/functional/FrameHandler.cpp
@@ -240,46 +240,47 @@
     tgt->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, (void**)&tgtPixels);
 
     if (srcPixels && tgtPixels) {
+        using namespace ::android::hardware::automotive::evs::common;
         if (tgtBuffer.format == HAL_PIXEL_FORMAT_RGBA_8888) {
             if (srcBuffer.format == HAL_PIXEL_FORMAT_YCRCB_420_SP) {   // 420SP == NV21
-                copyNV21toRGB32(width, height,
-                                srcPixels,
-                                tgtPixels, tgtBuffer.stride);
+                Utils::copyNV21toRGB32(width, height,
+                                       srcPixels,
+                                       tgtPixels, tgtBuffer.stride);
             } else if (srcBuffer.format == HAL_PIXEL_FORMAT_YV12) { // YUV_420P == YV12
-                copyYV12toRGB32(width, height,
-                                srcPixels,
-                                tgtPixels, tgtBuffer.stride);
+                Utils::copyYV12toRGB32(width, height,
+                                       srcPixels,
+                                       tgtPixels, tgtBuffer.stride);
             } else if (srcBuffer.format == HAL_PIXEL_FORMAT_YCBCR_422_I) { // YUYV
-                copyYUYVtoRGB32(width, height,
-                                srcPixels, srcBuffer.stride,
-                                tgtPixels, tgtBuffer.stride);
+                Utils::copyYUYVtoRGB32(width, height,
+                                       srcPixels, srcBuffer.stride,
+                                       tgtPixels, tgtBuffer.stride);
             } else if (srcBuffer.format == tgtBuffer.format) {  // 32bit RGBA
-                copyMatchedInterleavedFormats(width, height,
-                                              srcPixels, srcBuffer.stride,
-                                              tgtPixels, tgtBuffer.stride,
-                                              tgtBuffer.pixelSize);
+                Utils::copyMatchedInterleavedFormats(width, height,
+                                                     srcPixels, srcBuffer.stride,
+                                                     tgtPixels, tgtBuffer.stride,
+                                                     tgtBuffer.pixelSize);
             } else {
                 ALOGE("Camera buffer format is not supported");
                 success = false;
             }
         } else if (tgtBuffer.format == HAL_PIXEL_FORMAT_BGRA_8888) {
             if (srcBuffer.format == HAL_PIXEL_FORMAT_YCRCB_420_SP) {   // 420SP == NV21
-                copyNV21toBGR32(width, height,
-                                srcPixels,
-                                tgtPixels, tgtBuffer.stride);
+                Utils::copyNV21toBGR32(width, height,
+                                       srcPixels,
+                                       tgtPixels, tgtBuffer.stride);
             } else if (srcBuffer.format == HAL_PIXEL_FORMAT_YV12) { // YUV_420P == YV12
-                copyYV12toBGR32(width, height,
-                                srcPixels,
-                                tgtPixels, tgtBuffer.stride);
+                Utils::copyYV12toBGR32(width, height,
+                                       srcPixels,
+                                       tgtPixels, tgtBuffer.stride);
             } else if (srcBuffer.format == HAL_PIXEL_FORMAT_YCBCR_422_I) { // YUYV
-                copyYUYVtoBGR32(width, height,
-                                srcPixels, srcBuffer.stride,
-                                tgtPixels, tgtBuffer.stride);
+                Utils::copyYUYVtoBGR32(width, height,
+                                       srcPixels, srcBuffer.stride,
+                                       tgtPixels, tgtBuffer.stride);
             } else if (srcBuffer.format == tgtBuffer.format) {  // 32bit RGBA
-                copyMatchedInterleavedFormats(width, height,
-                                              srcPixels, srcBuffer.stride,
-                                              tgtPixels, tgtBuffer.stride,
-                                              tgtBuffer.pixelSize);
+                Utils::copyMatchedInterleavedFormats(width, height,
+                                                     srcPixels, srcBuffer.stride,
+                                                     tgtPixels, tgtBuffer.stride,
+                                                     tgtBuffer.pixelSize);
             } else {
                 ALOGE("Camera buffer format is not supported");
                 success = false;
diff --git a/automotive/evs/1.1/Android.bp b/automotive/evs/1.1/Android.bp
new file mode 100644
index 0000000..c850c91
--- /dev/null
+++ b/automotive/evs/1.1/Android.bp
@@ -0,0 +1,24 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.automotive.evs@1.1",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "types.hal",
+        "IEvsCamera.hal",
+        "IEvsCameraStream.hal",
+        "IEvsEnumerator.hal",
+    ],
+    interfaces: [
+        "android.hardware.automotive.evs@1.0",
+        "android.hardware.camera.device@3.2",
+        "android.hardware.graphics.common@1.0",
+        "android.hardware.graphics.common@1.1",
+        "android.hardware.graphics.common@1.2",
+        "android.hidl.base@1.0",
+    ],
+    gen_java: false,
+}
diff --git a/automotive/evs/1.1/IEvsCamera.hal b/automotive/evs/1.1/IEvsCamera.hal
new file mode 100644
index 0000000..fc68e60
--- /dev/null
+++ b/automotive/evs/1.1/IEvsCamera.hal
@@ -0,0 +1,181 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs@1.1;
+
+import @1.0::IEvsCamera;
+import @1.0::IEvsDisplay;
+import @1.0::EvsResult;
+import IEvsCameraStream;
+
+/**
+ * Represents a single camera and is the primary interface for capturing images.
+ */
+interface IEvsCamera extends @1.0::IEvsCamera {
+    /**
+     * Returns the description of this camera.
+     *
+     * @return info The description of this camera.  This must be the same value as
+     *              reported by EvsEnumerator::getCameraList_1_1().
+     */
+    getCameraInfo_1_1() generates (CameraDesc info);
+
+    /**
+     * Returns the description of the physical camera device that backs this
+     * logical camera.
+     *
+     * If a requested device does not either exist or back this logical device,
+     * this method returns a null camera descriptor.  And, if this is called on
+     * a physical camera device, this method is the same as getCameraInfo_1_1()
+     * method if a given device ID is matched.  Otherwise, this will return a
+     * null camera descriptor.
+     *
+     * @param  deviceId Physical camera device identifier string.
+     * @return info     The description of a member physical camera device.
+     *                  This must be the same value as reported by
+     *                  EvsEnumerator::getCameraList_1_1().
+     */
+    getPhysicalCameraInfo(string deviceId) generates (CameraDesc info);
+
+    /**
+     * Requests to pause EVS camera stream events.
+     *
+     * Like stopVideoStream(), events may continue to arrive for some time
+     * after this call returns. Delivered frame buffers must be returned.
+     *
+     * @return result EvsResult::OK is returned if this call is successful.
+     */
+    pauseVideoStream() generates (EvsResult result);
+
+    /**
+     * Requests to resume EVS camera stream.
+     *
+     * @return result EvsResult::OK is returned if this call is successful.
+     */
+    resumeVideoStream() generates (EvsResult result);
+
+    /**
+     * Returns frame that were delivered by to the IEvsCameraStream.
+     *
+     * When done consuming a frame delivered to the IEvsCameraStream
+     * interface, it must be returned to the IEvsCamera for reuse.
+     * A small, finite number of buffers are available (possibly as small
+     * as one), and if the supply is exhausted, no further frames may be
+     * delivered until a buffer is returned.
+     *
+     * @param  buffer Buffers to be returned.
+     * @return result Return EvsResult::OK if this call is successful.
+     */
+    doneWithFrame_1_1(vec<BufferDesc> buffer) generates (EvsResult result);
+
+    /**
+     * Requests to be a master client.
+     *
+     * When multiple clients subscribe to a single camera hardware and one of
+     * them adjusts a camera parameter such as the contrast, it may disturb
+     * other clients' operations.  Therefore, the client must call this method
+     * to be a master client.  Once it becomes a master, it will be able to
+     * change camera parameters until either it dies or explicitly gives up the
+     * role.
+     *
+     * @return result EvsResult::OK if a master role is granted.
+     *                EvsResult::OWNERSHIP_LOST if there is already a
+     *                master client.
+     */
+    setMaster() generates (EvsResult result);
+
+    /**
+     * Sets to be a master client forcibly.
+     *
+     * The client, which owns the display, has a high priority and can take over
+     * a master role from other clients without the display.
+     *
+     * @param  display IEvsDisplay handle.  If a given display is in either
+     *                 NOT_VISIBLE, VISIBLE_ON_NEXT_FRAME, or VISIBLE state, the
+     *                 calling client is considered as the high priority client
+     *                 and therefore allowed to take over a master role from
+     *                 existing master client.
+     *
+     * @return result  EvsResult::OK if a master role is granted.
+     *                 EvsResult::INVALID_ARG if a given display handle is null
+     *                 or in valid states.
+     */
+    forceMaster(IEvsDisplay display) generates (EvsResult result);
+
+    /**
+     * Retires from a master client role.
+     *
+     * @return result EvsResult::OK if this call is successful.
+     *                EvsResult::INVALID_ARG if the caller client is not a
+     *                master client.
+     */
+    unsetMaster() generates (EvsResult result);
+
+    /**
+     * Retrieves a list of parameters this camera supports.
+     *
+     * @return params A list of CameraParam that this camera supports.
+     */
+    getParameterList() generates (vec<CameraParam> params);
+
+    /**
+     * Requests a valid value range of a camera parameter
+     *
+     * @param  id    The identifier of camera parameter, CameraParam enum.
+     *
+     * @return min   The lower bound of valid parameter value range.
+     * @return max   The upper bound of valid parameter value range.
+     * @return step  The resolution of values in valid range.
+     */
+    getIntParameterRange(CameraParam id)
+        generates (int32_t min, int32_t max, int32_t step);
+
+    /**
+     * Requests to set a camera parameter.
+     *
+     * Only a request from the master client will be processed successfully.
+     * When this method is called on a logical camera device, it will be forwarded
+     * to each physical device and, if it fails to program any physical device,
+     * it will return an error code with the same number of effective values as
+     * the number of backing camera devices.
+     *
+     * @param  id             The identifier of camera parameter, CameraParam enum.
+     *         value          A desired parameter value.
+     * @return result         EvsResult::OK if it succeeds to set a parameter.
+     *                        EvsResult::INVALID_ARG if either the request is
+     *                        not made by a master client, or a requested
+     *                        parameter is not supported.
+     *                        EvsResult::UNDERLYING_SERVICE_ERROR if it fails to
+     *                        program a value by any other reason.
+     *         effectiveValue Programmed parameter values.  This may differ
+     *                        from what the client gives if, for example, the
+     *                        driver does not support a target parameter.
+     */
+    setIntParameter(CameraParam id, int32_t value)
+        generates (EvsResult result, vec<int32_t> effectiveValue);
+
+    /**
+     * Retrieves values of given camera parameter.
+     *
+     * @param  id     The identifier of camera parameter, CameraParam enum.
+     * @return result EvsResult::OK if it succeeds to read a parameter.
+     *                EvsResult::INVALID_ARG if either a requested parameter is
+     *                not supported.
+     *         value  Values of requested camera parameter, the same number of
+     *                values as backing camera devices.
+     */
+    getIntParameter(CameraParam id) generates(EvsResult result, vec<int32_t> value);
+};
diff --git a/automotive/evs/1.1/IEvsCameraStream.hal b/automotive/evs/1.1/IEvsCameraStream.hal
new file mode 100644
index 0000000..aa35c62
--- /dev/null
+++ b/automotive/evs/1.1/IEvsCameraStream.hal
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs@1.1;
+
+import @1.0::IEvsCameraStream;
+import @1.1::BufferDesc;
+import @1.1::EvsEventDesc;
+
+/**
+ * Implemented on client side to receive asynchronous streaming event deliveries.
+ */
+interface IEvsCameraStream extends @1.0::IEvsCameraStream {
+
+    /**
+     * Receives calls from the HAL each time video frames is ready for inspection.
+     * Buffer handles received by this method must be returned via calls to
+     * IEvsCamera::doneWithFrame_1_1(). When the video stream is stopped via a call
+     * to IEvsCamera::stopVideoStream(), this callback may continue to happen for
+     * some time as the pipeline drains. Each frame must still be returned.
+     * When the last frame in the stream has been delivered, STREAM_STOPPED
+     * event must be delivered.  No further frame deliveries may happen
+     * thereafter.
+     *
+     * A camera device will deliver the same number of frames as number of
+     * backing physical camera devices; it means, a physical camera device
+     * sends always a single frame and a logical camera device sends multiple
+     * frames as many as number of backing physical camera devices.
+     *
+     * @param buffer Buffer descriptors of delivered image frames.
+     */
+    oneway deliverFrame_1_1(vec<BufferDesc> buffer);
+
+    /**
+     * Receives calls from the HAL each time an event happens.
+     *
+     * @param  event EVS event with possible event information.
+     */
+    oneway notify(EvsEventDesc event);
+};
diff --git a/automotive/evs/1.1/IEvsEnumerator.hal b/automotive/evs/1.1/IEvsEnumerator.hal
new file mode 100644
index 0000000..7752b0e
--- /dev/null
+++ b/automotive/evs/1.1/IEvsEnumerator.hal
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs@1.1;
+
+import IEvsCamera;
+import @1.0::IEvsEnumerator;
+import @1.0::EvsResult;
+import android.hardware.camera.device@3.2::Stream;
+
+/**
+ * Provides the mechanism for EVS camera discovery
+ */
+interface IEvsEnumerator extends @1.0::IEvsEnumerator {
+    /**
+     * Returns a list of all EVS cameras available to the system
+     *
+     * @return cameras A list of cameras availale for EVS service.
+     */
+    getCameraList_1_1() generates (vec<CameraDesc> cameras);
+
+    /**
+     * Gets the IEvsCamera associated with a cameraId from a CameraDesc
+     *
+     * Given a camera's unique cameraId from CameraDesc, returns the
+     * IEvsCamera interface associated with the specified camera. When
+     * done using the camera, the caller may release it by calling closeCamera().
+     *
+     * @param  cameraId  A unique identifier of the camera.
+     * @param  streamCfg A stream configuration the client wants to use.
+     * @return evsCamera EvsCamera object associated with a given cameraId.
+     *                   Returned object would be null if a camera device does
+     *                   not support a given stream configuration or is already
+     *                   configured differently by another client.
+     */
+    openCamera_1_1(string cameraId, Stream streamCfg) generates (IEvsCamera evsCamera);
+
+    /**
+     * Tells whether this is EVS manager or HAL implementation.
+     *
+     * @return result False for EVS manager implementations and true for all others.
+     */
+    isHardware() generates (bool result);
+};
diff --git a/automotive/evs/1.1/default/Android.bp b/automotive/evs/1.1/default/Android.bp
new file mode 100644
index 0000000..a7c7b42
--- /dev/null
+++ b/automotive/evs/1.1/default/Android.bp
@@ -0,0 +1,47 @@
+cc_binary {
+    name: "android.hardware.automotive.evs@1.1-service",
+    defaults: ["hidl_defaults"],
+    proprietary: true,
+    relative_install_path: "hw",
+    srcs: [
+        "service.cpp",
+        "EvsCamera.cpp",
+        "EvsEnumerator.cpp",
+        "EvsDisplay.cpp",
+        "ConfigManager.cpp",
+        "ConfigManagerUtil.cpp",
+    ],
+    init_rc: ["android.hardware.automotive.evs@1.1-service.rc"],
+
+    shared_libs: [
+        "android.hardware.automotive.evs@1.0",
+        "android.hardware.automotive.evs@1.1",
+        "android.hardware.camera.device@3.3",
+        "libbase",
+        "libbinder",
+        "liblog",
+        "libhardware",
+        "libhidlbase",
+        "liblog",
+        "libui",
+        "libutils",
+        "libcamera_metadata",
+        "libtinyxml2",
+    ],
+
+    cflags: [
+        "-O0",
+        "-g",
+    ],
+
+    required: [
+        "evs_default_configuration.xml",
+    ],
+}
+
+prebuilt_etc {
+    name: "evs_default_configuration.xml",
+    soc_specific: true,
+    src: "resources/evs_default_configuration.xml",
+    sub_dir: "automotive/evs",
+}
diff --git a/automotive/evs/1.1/default/ConfigManager.cpp b/automotive/evs/1.1/default/ConfigManager.cpp
new file mode 100644
index 0000000..986793e
--- /dev/null
+++ b/automotive/evs/1.1/default/ConfigManager.cpp
@@ -0,0 +1,512 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <sstream>
+#include <fstream>
+#include <thread>
+
+#include <hardware/gralloc.h>
+#include <utils/SystemClock.h>
+#include <android/hardware/camera/device/3.2/ICameraDevice.h>
+
+#include "ConfigManager.h"
+
+using ::android::hardware::camera::device::V3_2::StreamRotation;
+
+
+ConfigManager::~ConfigManager() {
+    /* Nothing to do */
+}
+
+
+void ConfigManager::readCameraInfo(const XMLElement * const aCameraElem) {
+    if (aCameraElem == nullptr) {
+        ALOGW("XML file does not have required camera element");
+        return;
+    }
+
+    const XMLElement *curElem = aCameraElem->FirstChildElement();
+    while (curElem != nullptr) {
+        if (!strcmp(curElem->Name(), "group")) {
+            /* camera group identifier */
+            const char *id = curElem->FindAttribute("id")->Value();
+
+            /* create a camera group to be filled */
+            CameraGroupInfo *aCamera = new CameraGroupInfo();
+
+            /* read camera device information */
+            if (!readCameraDeviceInfo(aCamera, curElem)) {
+                ALOGW("Failed to read a camera information of %s", id);
+                delete aCamera;
+                continue;
+            }
+
+            /* camera group synchronization */
+            const char *sync = curElem->FindAttribute("synchronized")->Value();
+            if (!strcmp(sync, "CALIBRATED")) {
+                aCamera->synchronized =
+                    ANDROID_LOGICAL_MULTI_CAMERA_SENSOR_SYNC_TYPE_CALIBRATED;
+            } else if (!strcmp(sync, "APPROXIMATE")) {
+                aCamera->synchronized =
+                    ANDROID_LOGICAL_MULTI_CAMERA_SENSOR_SYNC_TYPE_APPROXIMATE;
+            } else {
+                aCamera->synchronized = 0; // Not synchronized
+            }
+
+            /* add a group to hash map */
+            mCameraGroupInfos.insert_or_assign(id, unique_ptr<CameraGroupInfo>(aCamera));
+        } else if (!strcmp(curElem->Name(), "device")) {
+            /* camera unique identifier */
+            const char *id = curElem->FindAttribute("id")->Value();
+
+            /* camera mount location */
+            const char *pos = curElem->FindAttribute("position")->Value();
+
+            /* create a camera device to be filled */
+            CameraInfo *aCamera = new CameraInfo();
+
+            /* read camera device information */
+            if (!readCameraDeviceInfo(aCamera, curElem)) {
+                ALOGW("Failed to read a camera information of %s", id);
+                delete aCamera;
+                continue;
+            }
+
+            /* store read camera module information */
+            mCameraInfo.insert_or_assign(id, unique_ptr<CameraInfo>(aCamera));
+
+            /* assign a camera device to a position group */
+            mCameraPosition[pos].emplace(id);
+        } else {
+            /* ignore other device types */
+            ALOGD("Unknown element %s is ignored", curElem->Name());
+        }
+
+        curElem = curElem->NextSiblingElement();
+    }
+}
+
+
+bool
+ConfigManager::readCameraDeviceInfo(CameraInfo *aCamera,
+                                    const XMLElement *aDeviceElem) {
+    if (aCamera == nullptr || aDeviceElem == nullptr) {
+        return false;
+    }
+
+    /* size information to allocate camera_metadata_t */
+    size_t totalEntries = 0;
+    size_t totalDataSize = 0;
+
+    /* read device capabilities */
+    totalEntries +=
+        readCameraCapabilities(aDeviceElem->FirstChildElement("caps"),
+                               aCamera,
+                               totalDataSize);
+
+
+    /* read camera metadata */
+    totalEntries +=
+        readCameraMetadata(aDeviceElem->FirstChildElement("characteristics"),
+                           aCamera,
+                           totalDataSize);
+
+    /* construct camera_metadata_t */
+    if (!constructCameraMetadata(aCamera, totalEntries, totalDataSize)) {
+        ALOGW("Either failed to allocate memory or "
+              "allocated memory was not large enough");
+    }
+
+    return true;
+}
+
+
+size_t
+ConfigManager::readCameraCapabilities(const XMLElement * const aCapElem,
+                                      CameraInfo *aCamera,
+                                      size_t &dataSize) {
+    if (aCapElem == nullptr || aCamera == nullptr) {
+        return 0;
+    }
+
+    string token;
+    const XMLElement *curElem = nullptr;
+
+    /* a list of supported camera parameters/controls */
+    curElem = aCapElem->FirstChildElement("supported_controls");
+    if (curElem != nullptr) {
+        const XMLElement *ctrlElem = curElem->FirstChildElement("control");
+        while (ctrlElem != nullptr) {
+            const char *nameAttr = ctrlElem->FindAttribute("name")->Value();;
+            const int32_t minVal = stoi(ctrlElem->FindAttribute("min")->Value());
+            const int32_t maxVal = stoi(ctrlElem->FindAttribute("max")->Value());
+
+            int32_t stepVal = 1;
+            const XMLAttribute *stepAttr = ctrlElem->FindAttribute("step");
+            if (stepAttr != nullptr) {
+                stepVal = stoi(stepAttr->Value());
+            }
+
+            CameraParam aParam;
+            if (ConfigManagerUtil::convertToEvsCameraParam(nameAttr,
+                                                           aParam)) {
+                aCamera->controls.emplace(
+                    aParam,
+                    make_tuple(minVal, maxVal, stepVal)
+                );
+            }
+
+            ctrlElem = ctrlElem->NextSiblingElement("control");
+        }
+    }
+
+    /* a list of camera stream configurations */
+    curElem = aCapElem->FirstChildElement("stream");
+    while (curElem != nullptr) {
+        /* read 5 attributes */
+        const XMLAttribute *idAttr     = curElem->FindAttribute("id");
+        const XMLAttribute *widthAttr  = curElem->FindAttribute("width");
+        const XMLAttribute *heightAttr = curElem->FindAttribute("height");
+        const XMLAttribute *fmtAttr    = curElem->FindAttribute("format");
+        const XMLAttribute *fpsAttr    = curElem->FindAttribute("framerate");
+
+        const int32_t id = stoi(idAttr->Value());
+        int32_t framerate = 0;
+        if (fpsAttr != nullptr) {
+            framerate = stoi(fpsAttr->Value());
+        }
+
+        int32_t pixFormat;
+        if (ConfigManagerUtil::convertToPixelFormat(fmtAttr->Value(),
+                                                    pixFormat)) {
+            RawStreamConfiguration cfg = {
+                id,
+                stoi(widthAttr->Value()),
+                stoi(heightAttr->Value()),
+                pixFormat,
+                ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT,
+                framerate
+            };
+            aCamera->streamConfigurations.insert_or_assign(id, cfg);
+        }
+
+        curElem = curElem->NextSiblingElement("stream");
+    }
+
+    dataSize = calculate_camera_metadata_entry_data_size(
+                   get_camera_metadata_tag_type(
+                       ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS
+                   ),
+                   aCamera->streamConfigurations.size() * kStreamCfgSz
+               );
+
+    /* a single camera metadata entry contains multiple stream configurations */
+    return dataSize > 0 ? 1 : 0;
+}
+
+
+size_t
+ConfigManager::readCameraMetadata(const XMLElement * const aParamElem,
+                                  CameraInfo *aCamera,
+                                  size_t &dataSize) {
+    if (aParamElem == nullptr || aCamera == nullptr) {
+        return 0;
+    }
+
+    const XMLElement *curElem = aParamElem->FirstChildElement("parameter");
+    size_t numEntries = 0;
+    camera_metadata_tag_t tag;
+    while (curElem != nullptr) {
+        if (!ConfigManagerUtil::convertToMetadataTag(curElem->FindAttribute("name")->Value(),
+                                                     tag)) {
+            switch(tag) {
+                case ANDROID_LENS_DISTORTION:
+                case ANDROID_LENS_POSE_ROTATION:
+                case ANDROID_LENS_POSE_TRANSLATION:
+                case ANDROID_LENS_INTRINSIC_CALIBRATION: {
+                    /* float[] */
+                    size_t count = 0;
+                    void   *data = ConfigManagerUtil::convertFloatArray(
+                                        curElem->FindAttribute("size")->Value(),
+                                        curElem->FindAttribute("value")->Value(),
+                                        count
+                                   );
+
+                    aCamera->cameraMetadata.insert_or_assign(
+                        tag, make_pair(make_unique<void *>(data), count)
+                    );
+
+                    ++numEntries;
+                    dataSize += calculate_camera_metadata_entry_data_size(
+                                    get_camera_metadata_tag_type(tag), count
+                                );
+
+                    break;
+                }
+
+                case ANDROID_REQUEST_AVAILABLE_CAPABILITIES: {
+                    camera_metadata_enum_android_request_available_capabilities_t *data =
+                        new camera_metadata_enum_android_request_available_capabilities_t[1];
+                    if (ConfigManagerUtil::convertToCameraCapability(
+                            curElem->FindAttribute("value")->Value(), *data)) {
+                                        curElem->FindAttribute("value")->Value(),
+                        aCamera->cameraMetadata.insert_or_assign(
+                            tag, make_pair(make_unique<void *>(data), 1)
+                        );
+
+                        ++numEntries;
+                        dataSize += calculate_camera_metadata_entry_data_size(
+                                        get_camera_metadata_tag_type(tag), 1
+                                    );
+                    }
+                    break;
+                }
+
+                case ANDROID_LOGICAL_MULTI_CAMERA_PHYSICAL_IDS: {
+                    /* a comma-separated list of physical camera devices */
+                    size_t len = strlen(curElem->FindAttribute("value")->Value());
+                    char *data = new char[len + 1];
+                    memcpy(data,
+                           curElem->FindAttribute("value")->Value(),
+                           len * sizeof(char));
+
+                    /* replace commas with null char */
+                    char *p = data;
+                    while (*p != '\0') {
+                        if (*p == ',') {
+                            *p = '\0';
+                        }
+                        ++p;
+                    }
+
+                    aCamera->cameraMetadata.insert_or_assign(
+                        tag, make_pair(make_unique<void *>(data), len)
+                    );
+
+                    ++numEntries;
+                    dataSize += calculate_camera_metadata_entry_data_size(
+                                    get_camera_metadata_tag_type(tag), len
+                                );
+                    break;
+                }
+
+                default:
+                    ALOGW("Parameter %s is not supported",
+                          curElem->FindAttribute("name")->Value());
+                    break;
+            }
+        }
+
+        curElem = curElem->NextSiblingElement("parameter");
+    }
+
+    return numEntries;
+}
+
+
+bool
+ConfigManager::constructCameraMetadata(CameraInfo *aCamera,
+                                       const size_t totalEntries,
+                                       const size_t totalDataSize) {
+    if (aCamera == nullptr || !aCamera->allocate(totalEntries, totalDataSize)) {
+        ALOGE("Failed to allocate memory for camera metadata");
+        return false;
+    }
+
+    const size_t numStreamConfigs = aCamera->streamConfigurations.size();
+    unique_ptr<int32_t[]> data(new int32_t[kStreamCfgSz * numStreamConfigs]);
+    int32_t *ptr = data.get();
+    for (auto &cfg : aCamera->streamConfigurations) {
+        for (auto i = 0; i < kStreamCfgSz; ++i) {
+          *ptr++ = cfg.second[i];
+        }
+    }
+    int32_t err = add_camera_metadata_entry(aCamera->characteristics,
+                                            ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS,
+                                            data.get(),
+                                            numStreamConfigs * kStreamCfgSz);
+
+    if (err) {
+        ALOGE("Failed to add stream configurations to metadata, ignored");
+        return false;
+    }
+
+    bool success = true;
+    for (auto &[tag, entry] : aCamera->cameraMetadata) {
+        /* try to add new camera metadata entry */
+        int32_t err = add_camera_metadata_entry(aCamera->characteristics,
+                                                tag,
+                                                entry.first.get(),
+                                                entry.second);
+        if (err) {
+            ALOGE("Failed to add an entry with a tag 0x%X", tag);
+
+            /* may exceed preallocated capacity */
+            ALOGE("Camera metadata has %ld / %ld entries and %ld / %ld bytes are filled",
+                  (long)get_camera_metadata_entry_count(aCamera->characteristics),
+                  (long)get_camera_metadata_entry_capacity(aCamera->characteristics),
+                  (long)get_camera_metadata_data_count(aCamera->characteristics),
+                  (long)get_camera_metadata_data_capacity(aCamera->characteristics));
+            ALOGE("\tCurrent metadata entry requires %ld bytes",
+                  (long)calculate_camera_metadata_entry_data_size(tag, entry.second));
+
+            success = false;
+        }
+    }
+
+    ALOGV("Camera metadata has %ld / %ld entries and %ld / %ld bytes are filled",
+          (long)get_camera_metadata_entry_count(aCamera->characteristics),
+          (long)get_camera_metadata_entry_capacity(aCamera->characteristics),
+          (long)get_camera_metadata_data_count(aCamera->characteristics),
+          (long)get_camera_metadata_data_capacity(aCamera->characteristics));
+
+    return success;
+}
+
+
+void ConfigManager::readSystemInfo(const XMLElement * const aSysElem) {
+    if (aSysElem == nullptr) {
+        return;
+    }
+
+    /*
+     * Please note that this function assumes that a given system XML element
+     * and its child elements follow DTD.  If it does not, it will cause a
+     * segmentation fault due to the failure of finding expected attributes.
+     */
+
+    /* read number of cameras available in the system */
+    const XMLElement *xmlElem = aSysElem->FirstChildElement("num_cameras");
+    if (xmlElem != nullptr) {
+        mSystemInfo.numCameras =
+            stoi(xmlElem->FindAttribute("value")->Value());
+    }
+}
+
+
+void ConfigManager::readDisplayInfo(const XMLElement * const aDisplayElem) {
+    if (aDisplayElem == nullptr) {
+        ALOGW("XML file does not have required camera element");
+        return;
+    }
+
+    const XMLElement *curDev = aDisplayElem->FirstChildElement("device");
+    while (curDev != nullptr) {
+        const char *id = curDev->FindAttribute("id")->Value();
+        //const char *pos = curDev->FirstAttribute("position")->Value();
+
+        unique_ptr<DisplayInfo> dpy(new DisplayInfo());
+        if (dpy == nullptr) {
+            ALOGE("Failed to allocate memory for DisplayInfo");
+            return;
+        }
+
+        const XMLElement *cap = curDev->FirstChildElement("caps");
+        if (cap != nullptr) {
+            const XMLElement *curStream = cap->FirstChildElement("stream");
+            while (curStream != nullptr) {
+                /* read 4 attributes */
+                const XMLAttribute *idAttr     = curStream->FindAttribute("id");
+                const XMLAttribute *widthAttr  = curStream->FindAttribute("width");
+                const XMLAttribute *heightAttr = curStream->FindAttribute("height");
+                const XMLAttribute *fmtAttr    = curStream->FindAttribute("format");
+
+                const int32_t id = stoi(idAttr->Value());
+                int32_t pixFormat;
+                if (ConfigManagerUtil::convertToPixelFormat(fmtAttr->Value(),
+                                                            pixFormat)) {
+                    RawStreamConfiguration cfg = {
+                        id,
+                        stoi(widthAttr->Value()),
+                        stoi(heightAttr->Value()),
+                        pixFormat,
+                        ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_INPUT,
+                        0   // unused
+                    };
+                    dpy->streamConfigurations.insert_or_assign(id, cfg);
+                }
+
+                curStream = curStream->NextSiblingElement("stream");
+            }
+        }
+
+        mDisplayInfo.insert_or_assign(id, std::move(dpy));
+        curDev = curDev->NextSiblingElement("device");
+    }
+
+    return;
+}
+
+
+bool ConfigManager::readConfigDataFromXML() noexcept {
+    XMLDocument xmlDoc;
+
+    const int64_t parsingStart = android::elapsedRealtimeNano();
+
+    /* load and parse a configuration file */
+    xmlDoc.LoadFile(mConfigFilePath);
+    if (xmlDoc.ErrorID() != XML_SUCCESS) {
+        ALOGE("Failed to load and/or parse a configuration file, %s", xmlDoc.ErrorStr());
+        return false;
+    }
+
+    /* retrieve the root element */
+    const XMLElement *rootElem = xmlDoc.RootElement();
+    if (strcmp(rootElem->Name(), "configuration")) {
+        ALOGE("A configuration file is not in the required format.  "
+              "See /etc/automotive/evs/evs_configuration.dtd");
+        return false;
+    }
+
+    /*
+     * parse camera information; this needs to be done before reading system
+     * information
+     */
+    readCameraInfo(rootElem->FirstChildElement("camera"));
+
+    /* parse system information */
+    readSystemInfo(rootElem->FirstChildElement("system"));
+
+    /* parse display information */
+    readDisplayInfo(rootElem->FirstChildElement("display"));
+
+    const int64_t parsingEnd = android::elapsedRealtimeNano();
+    ALOGI("Parsing configuration file takes %lf (ms)",
+          (double)(parsingEnd - parsingStart) / 1000000.0);
+
+
+    return true;
+}
+
+
+std::unique_ptr<ConfigManager> ConfigManager::Create(const char *path) {
+    unique_ptr<ConfigManager> cfgMgr(new ConfigManager(path));
+
+    /*
+     * Read a configuration from XML file
+     *
+     * If this is too slow, ConfigManager::readConfigDataFromBinary() and
+     * ConfigManager::writeConfigDataToBinary()can serialize CameraInfo object
+     * to the filesystem and construct CameraInfo instead; this was
+     * evaluated as 10x faster.
+     */
+    if (!cfgMgr->readConfigDataFromXML()) {
+        return nullptr;
+    } else {
+        return cfgMgr;
+    }
+}
+
diff --git a/automotive/evs/1.1/default/ConfigManager.h b/automotive/evs/1.1/default/ConfigManager.h
new file mode 100644
index 0000000..870af1c
--- /dev/null
+++ b/automotive/evs/1.1/default/ConfigManager.h
@@ -0,0 +1,318 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef CONFIG_MANAGER_H
+#define CONFIG_MANAGER_H
+
+#include <vector>
+#include <string>
+#include <unordered_map>
+#include <unordered_set>
+
+#include <tinyxml2.h>
+
+#include <system/camera_metadata.h>
+#include <log/log.h>
+#include <android/hardware/automotive/evs/1.1/types.h>
+
+#include "ConfigManagerUtil.h"
+
+using namespace std;
+using namespace tinyxml2;
+
+using ::android::hardware::hidl_vec;
+using ::android::hardware::camera::device::V3_2::Stream;
+using ::android::hardware::automotive::evs::V1_1::CameraParam;
+
+/*
+ * Plese note that this is different from what is defined in
+ * libhardware/modules/camera/3_4/metadata/types.h; this has one additional
+ * field to store a framerate.
+ */
+const size_t kStreamCfgSz = 6;
+typedef std::array<int32_t, kStreamCfgSz> RawStreamConfiguration;
+
+class ConfigManager {
+public:
+    static std::unique_ptr<ConfigManager> Create(const char *path = "");
+    ConfigManager(const ConfigManager&) = delete;
+    ConfigManager& operator=(const ConfigManager&) = delete;
+
+    virtual ~ConfigManager();
+
+    /* Camera device's capabilities and metadata */
+    class CameraInfo {
+    public:
+        CameraInfo() :
+            characteristics(nullptr) {
+            /* Nothing to do */
+        }
+
+        virtual ~CameraInfo() {
+            free_camera_metadata(characteristics);
+        }
+
+        /* Allocate memory for camera_metadata_t */
+        bool allocate(size_t entry_cap, size_t data_cap) {
+            if (characteristics != nullptr) {
+                ALOGE("Camera metadata is already allocated");
+                return false;
+            }
+
+            characteristics = allocate_camera_metadata(entry_cap, data_cap);
+            return characteristics != nullptr;
+        }
+
+        /*
+         * List of supported controls that the master client can program.
+         * Paraemters are stored with its valid range
+         */
+        unordered_map<CameraParam,
+                      tuple<int32_t, int32_t, int32_t>> controls;
+
+        /*
+         * List of supported output stream configurations; each array stores
+         * format, width, height, and direction values in the order.
+         */
+        unordered_map<int32_t, RawStreamConfiguration> streamConfigurations;
+
+        /*
+         * Internal storage for camera metadata.  Each entry holds a pointer to
+         * data and number of elements
+         */
+        unordered_map<camera_metadata_tag_t,
+                      pair<unique_ptr<void *>, size_t>> cameraMetadata;
+
+        /* Camera module characteristics */
+        camera_metadata_t *characteristics;
+    };
+
+    class CameraGroupInfo : public CameraInfo {
+    public:
+        CameraGroupInfo() {}
+
+        /* ID of member camera devices */
+        unordered_set<string> devices;
+
+        /* The capture operation of member camera devices are synchronized */
+        bool synchronized = false;
+    };
+
+    class SystemInfo {
+    public:
+        /* number of available cameras */
+        int32_t numCameras = 0;
+    };
+
+    class DisplayInfo {
+    public:
+        /*
+         * List of supported input stream configurations; each array stores
+         * format, width, height, and direction values in the order.
+         */
+        unordered_map<int32_t, RawStreamConfiguration> streamConfigurations;
+    };
+
+    /*
+     * Return system information
+     *
+     * @return SystemInfo
+     *         Constant reference of SystemInfo.
+     */
+    const SystemInfo &getSystemInfo() {
+        return mSystemInfo;
+    }
+
+    /*
+     * Return a list of cameras
+     *
+     * This function assumes that it is not being called frequently.
+     *
+     * @return vector<string>
+     *         A vector that contains unique camera device identifiers.
+     */
+    vector<string> getCameraList() {
+        vector<string> aList;
+        for (auto &v : mCameraInfo) {
+            aList.emplace_back(v.first);
+        }
+
+        return aList;
+    }
+
+
+    /*
+     * Return a list of cameras
+     *
+     * @return CameraGroupInfo
+     *         A pointer to a camera group identified by a given id.
+     */
+    unique_ptr<CameraGroupInfo>& getCameraGroupInfo(const string& gid) {
+        return mCameraGroupInfos[gid];
+    }
+
+
+    /*
+     * Return a camera metadata
+     *
+     * @param  cameraId
+     *         Unique camera node identifier in string
+     *
+     * @return unique_ptr<CameraInfo>
+     *         A pointer to CameraInfo that is associated with a given camera
+     *         ID.  This returns a null pointer if this does not recognize a
+     *         given camera identifier.
+     */
+    unique_ptr<CameraInfo>& getCameraInfo(const string cameraId) noexcept {
+        return mCameraInfo[cameraId];
+    }
+
+private:
+    /* Constructors */
+    ConfigManager(const char *xmlPath) :
+        mConfigFilePath(xmlPath) {
+    }
+
+    /* System configuration */
+    SystemInfo mSystemInfo;
+
+    /* Internal data structure for camera device information */
+    unordered_map<string, unique_ptr<CameraInfo>> mCameraInfo;
+
+    /* Internal data structure for camera device information */
+    unordered_map<string, unique_ptr<DisplayInfo>> mDisplayInfo;
+
+    /* Camera groups are stored in <groud id, CameraGroupInfo> hash map */
+    unordered_map<string, unique_ptr<CameraGroupInfo>> mCameraGroupInfos;
+
+    /*
+     * Camera positions are stored in <position, camera id set> hash map.
+     * The position must be one of front, rear, left, and right.
+     */
+    unordered_map<string, unordered_set<string>>  mCameraPosition;
+
+    /* A path to XML configuration file */
+    const char *mConfigFilePath;
+
+    /*
+     * Parse a given EVS configuration file and store the information
+     * internally.
+     *
+     * @return bool
+     *         True if it completes parsing a file successfully.
+     */
+    bool readConfigDataFromXML() noexcept;
+
+    /*
+     * read the information of the vehicle
+     *
+     * @param  aSysElem
+     *         A pointer to "system" XML element.
+     */
+    void readSystemInfo(const XMLElement * const aSysElem);
+
+    /*
+     * read the information of camera devices
+     *
+     * @param  aCameraElem
+     *         A pointer to "camera" XML element that may contain multiple
+     *         "device" elements.
+     */
+    void readCameraInfo(const XMLElement * const aCameraElem);
+
+    /*
+     * read display device information
+     *
+     * @param  aDisplayElem
+     *         A pointer to "display" XML element that may contain multiple
+     *         "device" elements.
+     */
+    void readDisplayInfo(const XMLElement * const aDisplayElem);
+
+    /*
+     * read camera device information
+     *
+     * @param  aCamera
+     *         A pointer to CameraInfo that will be completed by this
+     *         method.
+     *         aDeviceElem
+     *         A pointer to "device" XML element that contains camera module
+     *         capability info and its characteristics.
+     *
+     * @return bool
+     *         Return false upon any failure in reading and processing camera
+     *         device information.
+     */
+    bool readCameraDeviceInfo(CameraInfo *aCamera,
+                              const XMLElement *aDeviceElem);
+
+    /*
+     * read camera metadata
+     *
+     * @param  aCapElem
+     *         A pointer to "cap" XML element.
+     * @param  aCamera
+     *         A pointer to CameraInfo that is being filled by this method.
+     * @param  dataSize
+     *         Required size of memory to store camera metadata found in this
+     *         method.  This is calculated in this method and returned to the
+     *         caller for camera_metadata allocation.
+     *
+     * @return size_t
+     *         Number of camera metadata entries
+     */
+    size_t readCameraCapabilities(const XMLElement * const aCapElem,
+                                  CameraInfo *aCamera,
+                                  size_t &dataSize);
+
+    /*
+     * read camera metadata
+     *
+     * @param  aParamElem
+     *         A pointer to "characteristics" XML element.
+     * @param  aCamera
+     *         A pointer to CameraInfo that is being filled by this method.
+     * @param  dataSize
+     *         Required size of memory to store camera metadata found in this
+     *         method.
+     *
+     * @return size_t
+     *         Number of camera metadata entries
+     */
+    size_t readCameraMetadata(const XMLElement * const aParamElem,
+                              CameraInfo *aCamera,
+                              size_t &dataSize);
+
+    /*
+     * construct camera_metadata_t from camera capabilities and metadata
+     *
+     * @param  aCamera
+     *         A pointer to CameraInfo that is being filled by this method.
+     * @param  totalEntries
+     *         Number of camera metadata entries to be added.
+     * @param  totalDataSize
+     *         Sum of sizes of camera metadata entries to be added.
+     *
+     * @return bool
+     *         False if either it fails to allocate memory for camera metadata
+     *         or its size is not large enough to add all found camera metadata
+     *         entries.
+     */
+    bool constructCameraMetadata(CameraInfo *aCamera,
+                                 const size_t totalEntries,
+                                 const size_t totalDataSize);
+};
+#endif // CONFIG_MANAGER_H
+
diff --git a/automotive/evs/1.1/default/ConfigManagerUtil.cpp b/automotive/evs/1.1/default/ConfigManagerUtil.cpp
new file mode 100644
index 0000000..d10f236
--- /dev/null
+++ b/automotive/evs/1.1/default/ConfigManagerUtil.cpp
@@ -0,0 +1,155 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "ConfigManagerUtil.h"
+
+#include <string>
+#include <sstream>
+#include <linux/videodev2.h>
+
+#include <log/log.h>
+#include <system/graphics-base-v1.0.h>
+
+
+bool ConfigManagerUtil::convertToEvsCameraParam(const string &id,
+                                                CameraParam &camParam) {
+    string trimmed = ConfigManagerUtil::trimString(id);
+    bool success = true;
+
+    if (!trimmed.compare("BRIGHTNESS")) {
+        camParam =  CameraParam::BRIGHTNESS;
+    } else if (!trimmed.compare("CONTRAST")) {
+        camParam =  CameraParam::CONTRAST;
+    } else if (!trimmed.compare("AUTOGAIN")) {
+        camParam =  CameraParam::AUTOGAIN;
+    } else if (!trimmed.compare("GAIN")) {
+        camParam =  CameraParam::GAIN;
+    } else if (!trimmed.compare("AUTO_WHITE_BALANCE")) {
+        camParam =  CameraParam::AUTO_WHITE_BALANCE;
+    } else if (!trimmed.compare("WHITE_BALANCE_TEMPERATURE")) {
+        camParam =  CameraParam::WHITE_BALANCE_TEMPERATURE;
+    } else if (!trimmed.compare("SHARPNESS")) {
+        camParam =  CameraParam::SHARPNESS;
+    } else if (!trimmed.compare("AUTO_EXPOSURE")) {
+        camParam =  CameraParam::AUTO_EXPOSURE;
+    } else if (!trimmed.compare("ABSOLUTE_EXPOSURE")) {
+        camParam =  CameraParam::ABSOLUTE_EXPOSURE;
+    } else if (!trimmed.compare("ABSOLUTE_FOCUS")) {
+        camParam =  CameraParam::ABSOLUTE_FOCUS;
+    } else if (!trimmed.compare("AUTO_FOCUS")) {
+        camParam =  CameraParam::AUTO_FOCUS;
+    } else if (!trimmed.compare("ABSOLUTE_ZOOM")) {
+        camParam =  CameraParam::ABSOLUTE_ZOOM;
+    } else {
+        success = false;
+    }
+
+    return success;
+}
+
+
+bool ConfigManagerUtil::convertToPixelFormat(const string &format,
+                                             int32_t &pixFormat) {
+    string trimmed = ConfigManagerUtil::trimString(format);
+    bool success = true;
+
+    if (!trimmed.compare("RGBA_8888")) {
+        pixFormat =  HAL_PIXEL_FORMAT_RGBA_8888;
+    } else if (!trimmed.compare("YCRCB_420_SP")) {
+        pixFormat =  HAL_PIXEL_FORMAT_YCRCB_420_SP;
+    } else if (!trimmed.compare("YCBCR_422_I")) {
+        pixFormat =  HAL_PIXEL_FORMAT_YCBCR_422_I;
+    } else {
+        success = false;
+    }
+
+    return success;
+}
+
+
+bool ConfigManagerUtil::convertToMetadataTag(const char *name,
+                                             camera_metadata_tag &aTag) {
+    if (!strcmp(name, "LENS_DISTORTION")) {
+        aTag =  ANDROID_LENS_DISTORTION;
+    } else if (!strcmp(name, "LENS_INTRINSIC_CALIBRATION")) {
+        aTag =  ANDROID_LENS_INTRINSIC_CALIBRATION;
+    } else if (!strcmp(name, "LENS_POSE_ROTATION")) {
+        aTag =  ANDROID_LENS_POSE_ROTATION;
+    } else if (!strcmp(name, "LENS_POSE_TRANSLATION")) {
+        aTag =  ANDROID_LENS_POSE_TRANSLATION;
+    } else if (!strcmp(name, "REQUEST_AVAILABLE_CAPABILITIES")) {
+        aTag =  ANDROID_REQUEST_AVAILABLE_CAPABILITIES;
+    } else if (!strcmp(name, "LOGICAL_MULTI_CAMERA_PHYSICAL_IDS")) {
+        aTag =  ANDROID_LOGICAL_MULTI_CAMERA_PHYSICAL_IDS;
+    } else {
+        return false;
+    }
+
+    return true;
+}
+
+
+bool ConfigManagerUtil::convertToCameraCapability(
+    const char *name,
+    camera_metadata_enum_android_request_available_capabilities_t &cap) {
+
+    if (!strcmp(name, "DEPTH_OUTPUT")) {
+        cap = ANDROID_REQUEST_AVAILABLE_CAPABILITIES_DEPTH_OUTPUT;
+    } else if (!strcmp(name, "LOGICAL_MULTI_CAMERA")) {
+        cap = ANDROID_REQUEST_AVAILABLE_CAPABILITIES_LOGICAL_MULTI_CAMERA;
+    } else if (!strcmp(name, "MONOCHROME")) {
+        cap = ANDROID_REQUEST_AVAILABLE_CAPABILITIES_MONOCHROME;
+    } else if (!strcmp(name, "SECURE_IMAGE_DATA")) {
+        cap = ANDROID_REQUEST_AVAILABLE_CAPABILITIES_SECURE_IMAGE_DATA;
+    } else {
+        return false;
+    }
+
+    return true;
+}
+
+
+float *ConfigManagerUtil::convertFloatArray(const char *sz, const char *vals,
+                                            size_t &count, const char delimiter) {
+    string size_string(sz);
+    string value_string(vals);
+
+    count = stoi(size_string);
+    float *result = new float[count];
+    stringstream values(value_string);
+
+    int32_t idx = 0;
+    string token;
+    while (getline(values, token, delimiter)) {
+        result[idx++] = stof(token);
+    }
+
+    return result;
+}
+
+
+string ConfigManagerUtil::trimString(const string &src, const string &ws) {
+    const auto s = src.find_first_not_of(ws);
+    if (s == string::npos) {
+        return "";
+    }
+
+    const auto e = src.find_last_not_of(ws);
+    const auto r = e - s + 1;
+
+    return src.substr(s, r);
+}
+
diff --git a/automotive/evs/1.1/default/ConfigManagerUtil.h b/automotive/evs/1.1/default/ConfigManagerUtil.h
new file mode 100644
index 0000000..1710cac
--- /dev/null
+++ b/automotive/evs/1.1/default/ConfigManagerUtil.h
@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef CONFIG_MANAGER_UTIL_H
+#define CONFIG_MANAGER_UTIL_H
+
+#include <utility>
+#include <string>
+#include <system/camera_metadata.h>
+#include <android/hardware/automotive/evs/1.1/types.h>
+
+using namespace std;
+using ::android::hardware::automotive::evs::V1_1::CameraParam;
+
+
+class ConfigManagerUtil {
+public:
+    /**
+     * Convert a given string into V4L2_CID_*
+     */
+    static bool convertToEvsCameraParam(const string &id,
+                                        CameraParam &camParam);
+    /**
+     * Convert a given string into android.hardware.graphics.common.PixelFormat
+     */
+    static bool convertToPixelFormat(const string &format,
+                                     int32_t &pixelFormat);
+    /**
+     * Convert a given string into corresponding camera metadata data tag defined in
+     * system/media/camera/include/system/camera_metadta_tags.h
+     */
+    static bool convertToMetadataTag(const char *name,
+                                     camera_metadata_tag &aTag);
+    /**
+     * Convert a given string into a floating value array
+     */
+    static float *convertFloatArray(const char *sz,
+                                    const char *vals,
+                                    size_t &count,
+                                    const char delimiter = ',');
+    /**
+     * Trim a string
+     */
+    static string trimString(const string &src,
+                             const string &ws = " \n\r\t\f\v");
+
+    /**
+     * Convert a given string to corresponding camera capabilities
+     */
+    static bool convertToCameraCapability(
+        const char *name,
+        camera_metadata_enum_android_request_available_capabilities_t &cap);
+
+};
+
+#endif // CONFIG_MANAGER_UTIL_H
+
diff --git a/automotive/evs/1.1/default/EvsCamera.cpp b/automotive/evs/1.1/default/EvsCamera.cpp
new file mode 100644
index 0000000..b7e4efa
--- /dev/null
+++ b/automotive/evs/1.1/default/EvsCamera.cpp
@@ -0,0 +1,695 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "android.hardware.automotive.evs@1.1-service"
+
+#include "EvsCamera.h"
+#include "EvsEnumerator.h"
+
+#include <ui/GraphicBufferAllocator.h>
+#include <ui/GraphicBufferMapper.h>
+#include <utils/SystemClock.h>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace evs {
+namespace V1_1 {
+namespace implementation {
+
+
+// Special camera names for which we'll initialize alternate test data
+const char EvsCamera::kCameraName_Backup[] = "backup";
+
+
+// Arbitrary limit on number of graphics buffers allowed to be allocated
+// Safeguards against unreasonable resource consumption and provides a testable limit
+const unsigned MAX_BUFFERS_IN_FLIGHT = 100;
+
+
+EvsCamera::EvsCamera(const char *id,
+                     unique_ptr<ConfigManager::CameraInfo> &camInfo) :
+        mFramesAllowed(0),
+        mFramesInUse(0),
+        mStreamState(STOPPED),
+        mCameraInfo(camInfo) {
+
+    ALOGD("EvsCamera instantiated");
+
+    /* set a camera id */
+    mDescription.v1.cameraId = id;
+
+    /* set camera metadata */
+    mDescription.metadata.setToExternal((uint8_t *)camInfo->characteristics,
+                                        get_camera_metadata_size(camInfo->characteristics));
+}
+
+
+EvsCamera::~EvsCamera() {
+    ALOGD("EvsCamera being destroyed");
+    forceShutdown();
+}
+
+
+//
+// This gets called if another caller "steals" ownership of the camera
+//
+void EvsCamera::forceShutdown()
+{
+    ALOGD("EvsCamera forceShutdown");
+
+    // Make sure our output stream is cleaned up
+    // (It really should be already)
+    stopVideoStream();
+
+    // Claim the lock while we work on internal state
+    std::lock_guard <std::mutex> lock(mAccessLock);
+
+    // Drop all the graphics buffers we've been using
+    if (mBuffers.size() > 0) {
+        GraphicBufferAllocator& alloc(GraphicBufferAllocator::get());
+        for (auto&& rec : mBuffers) {
+            if (rec.inUse) {
+                ALOGE("Error - releasing buffer despite remote ownership");
+            }
+            alloc.free(rec.handle);
+            rec.handle = nullptr;
+        }
+        mBuffers.clear();
+    }
+
+    // Put this object into an unrecoverable error state since somebody else
+    // is going to own the underlying camera now
+    mStreamState = DEAD;
+}
+
+
+// Methods from ::android::hardware::automotive::evs::V1_0::IEvsCamera follow.
+Return<void> EvsCamera::getCameraInfo(getCameraInfo_cb _hidl_cb) {
+    ALOGD("getCameraInfo");
+
+    // Send back our self description
+    _hidl_cb(mDescription.v1);
+    return Void();
+}
+
+
+Return<EvsResult> EvsCamera::setMaxFramesInFlight(uint32_t bufferCount) {
+    ALOGD("setMaxFramesInFlight");
+    std::lock_guard<std::mutex> lock(mAccessLock);
+
+    // If we've been displaced by another owner of the camera, then we can't do anything else
+    if (mStreamState == DEAD) {
+        ALOGE("ignoring setMaxFramesInFlight call when camera has been lost.");
+        return EvsResult::OWNERSHIP_LOST;
+    }
+
+    // We cannot function without at least one video buffer to send data
+    if (bufferCount < 1) {
+        ALOGE("Ignoring setMaxFramesInFlight with less than one buffer requested");
+        return EvsResult::INVALID_ARG;
+    }
+
+    // Update our internal state
+    if (setAvailableFrames_Locked(bufferCount)) {
+        return EvsResult::OK;
+    } else {
+        return EvsResult::BUFFER_NOT_AVAILABLE;
+    }
+}
+
+
+Return<EvsResult> EvsCamera::startVideoStream(const ::android::sp<IEvsCameraStream_1_0>& stream)  {
+    ALOGD("startVideoStream");
+    std::lock_guard<std::mutex> lock(mAccessLock);
+
+    // If we've been displaced by another owner of the camera, then we can't do anything else
+    if (mStreamState == DEAD) {
+        ALOGE("ignoring startVideoStream call when camera has been lost.");
+        return EvsResult::OWNERSHIP_LOST;
+    }
+    if (mStreamState != STOPPED) {
+        ALOGE("ignoring startVideoStream call when a stream is already running.");
+        return EvsResult::STREAM_ALREADY_RUNNING;
+    }
+
+    // If the client never indicated otherwise, configure ourselves for a single streaming buffer
+    if (mFramesAllowed < 1) {
+        if (!setAvailableFrames_Locked(1)) {
+            ALOGE("Failed to start stream because we couldn't get a graphics buffer");
+            return EvsResult::BUFFER_NOT_AVAILABLE;
+        }
+    }
+
+    // Record the user's callback for use when we have a frame ready
+    mStream = IEvsCameraStream_1_1::castFrom(stream).withDefault(nullptr);
+    if (mStream == nullptr) {
+        ALOGE("Default implementation does not support v1.0 IEvsCameraStream");
+        return EvsResult::INVALID_ARG;
+    }
+
+    // Start the frame generation thread
+    mStreamState = RUNNING;
+    mCaptureThread = std::thread([this](){ generateFrames(); });
+
+    return EvsResult::OK;
+}
+
+
+Return<void> EvsCamera::doneWithFrame(const BufferDesc_1_0& buffer) {
+    std::lock_guard <std::mutex> lock(mAccessLock);
+    returnBuffer(buffer.bufferId, buffer.memHandle);
+
+    return Void();
+}
+
+
+Return<void> EvsCamera::stopVideoStream()  {
+    ALOGD("stopVideoStream");
+    std::unique_lock <std::mutex> lock(mAccessLock);
+
+    if (mStreamState == RUNNING) {
+        // Tell the GenerateFrames loop we want it to stop
+        mStreamState = STOPPING;
+
+        // Block outside the mutex until the "stop" flag has been acknowledged
+        // We won't send any more frames, but the client might still get some already in flight
+        ALOGD("Waiting for stream thread to end...");
+        lock.unlock();
+        mCaptureThread.join();
+        lock.lock();
+
+        mStreamState = STOPPED;
+        mStream = nullptr;
+        ALOGD("Stream marked STOPPED.");
+    }
+
+    return Void();
+}
+
+
+Return<int32_t> EvsCamera::getExtendedInfo(uint32_t opaqueIdentifier)  {
+    ALOGD("getExtendedInfo");
+    std::lock_guard<std::mutex> lock(mAccessLock);
+
+    // For any single digit value, return the index itself as a test value
+    if (opaqueIdentifier <= 9) {
+        return opaqueIdentifier;
+    }
+
+    // Return zero by default as required by the spec
+    return 0;
+}
+
+
+Return<EvsResult> EvsCamera::setExtendedInfo(uint32_t /*opaqueIdentifier*/, int32_t /*opaqueValue*/)  {
+    ALOGD("setExtendedInfo");
+    std::lock_guard<std::mutex> lock(mAccessLock);
+
+    // If we've been displaced by another owner of the camera, then we can't do anything else
+    if (mStreamState == DEAD) {
+        ALOGE("ignoring setExtendedInfo call when camera has been lost.");
+        return EvsResult::OWNERSHIP_LOST;
+    }
+
+    // We don't store any device specific information in this implementation
+    return EvsResult::INVALID_ARG;
+}
+
+
+// Methods from ::android::hardware::automotive::evs::V1_1::IEvsCamera follow.
+Return<void> EvsCamera::getCameraInfo_1_1(getCameraInfo_1_1_cb _hidl_cb) {
+    ALOGD("getCameraInfo_1_1");
+
+    // Send back our self description
+    _hidl_cb(mDescription);
+    return Void();
+}
+
+
+Return<void> EvsCamera::getPhysicalCameraInfo(const hidl_string& id,
+                                              getCameraInfo_1_1_cb _hidl_cb) {
+    ALOGD("%s", __FUNCTION__);
+
+    // This works exactly same as getCameraInfo_1_1() in default implementation.
+    (void)id;
+    _hidl_cb(mDescription);
+    return Void();
+}
+
+
+Return<EvsResult> EvsCamera::doneWithFrame_1_1(const hidl_vec<BufferDesc_1_1>& buffers)  {
+    std::lock_guard <std::mutex> lock(mAccessLock);
+
+    for (auto&& buffer : buffers) {
+        returnBuffer(buffer.bufferId, buffer.buffer.nativeHandle);
+    }
+
+    return EvsResult::OK;
+}
+
+
+Return<EvsResult> EvsCamera::pauseVideoStream() {
+    // Default implementation does not support this.
+    return EvsResult::UNDERLYING_SERVICE_ERROR;
+}
+
+
+Return<EvsResult> EvsCamera::resumeVideoStream() {
+    // Default implementation does not support this.
+    return EvsResult::UNDERLYING_SERVICE_ERROR;
+}
+
+
+Return<EvsResult> EvsCamera::setMaster() {
+    // Default implementation does not expect multiple subscribers and therefore
+    // return a success code always.
+    return EvsResult::OK;
+}
+
+Return<EvsResult> EvsCamera::forceMaster(const sp<IEvsDisplay>& ) {
+    // Default implementation does not expect multiple subscribers and therefore
+    // return a success code always.
+    return EvsResult::OK;
+}
+
+
+Return<EvsResult> EvsCamera::unsetMaster() {
+    // Default implementation does not expect multiple subscribers and therefore
+    // return a success code always.
+    return EvsResult::OK;
+}
+
+
+Return<void> EvsCamera::getParameterList(getParameterList_cb _hidl_cb) {
+    hidl_vec<CameraParam> hidlCtrls;
+    hidlCtrls.resize(mCameraInfo->controls.size());
+    unsigned idx = 0;
+    for (auto& [cid, cfg] : mCameraInfo->controls) {
+        hidlCtrls[idx++] = cid;
+    }
+
+    _hidl_cb(hidlCtrls);
+    return Void();
+}
+
+
+Return<void> EvsCamera::getIntParameterRange(CameraParam id,
+                                             getIntParameterRange_cb _hidl_cb) {
+    auto range = mCameraInfo->controls[id];
+    _hidl_cb(get<0>(range), get<1>(range), get<2>(range));
+    return Void();
+}
+
+
+Return<void> EvsCamera::setIntParameter(CameraParam id, int32_t value,
+                                        setIntParameter_cb _hidl_cb) {
+    // Default implementation does not support this.
+    (void)id;
+    (void)value;
+    _hidl_cb(EvsResult::INVALID_ARG, 0);
+    return Void();
+}
+
+
+Return<void> EvsCamera::getIntParameter(CameraParam id,
+                                        getIntParameter_cb _hidl_cb) {
+    // Default implementation does not support this.
+    (void)id;
+    _hidl_cb(EvsResult::INVALID_ARG, 0);
+    return Void();
+}
+
+
+bool EvsCamera::setAvailableFrames_Locked(unsigned bufferCount) {
+    if (bufferCount < 1) {
+        ALOGE("Ignoring request to set buffer count to zero");
+        return false;
+    }
+    if (bufferCount > MAX_BUFFERS_IN_FLIGHT) {
+        ALOGE("Rejecting buffer request in excess of internal limit");
+        return false;
+    }
+
+    // Is an increase required?
+    if (mFramesAllowed < bufferCount) {
+        // An increase is required
+        unsigned needed = bufferCount - mFramesAllowed;
+        ALOGI("Allocating %d buffers for camera frames", needed);
+
+        unsigned added = increaseAvailableFrames_Locked(needed);
+        if (added != needed) {
+            // If we didn't add all the frames we needed, then roll back to the previous state
+            ALOGE("Rolling back to previous frame queue size");
+            decreaseAvailableFrames_Locked(added);
+            return false;
+        }
+    } else if (mFramesAllowed > bufferCount) {
+        // A decrease is required
+        unsigned framesToRelease = mFramesAllowed - bufferCount;
+        ALOGI("Returning %d camera frame buffers", framesToRelease);
+
+        unsigned released = decreaseAvailableFrames_Locked(framesToRelease);
+        if (released != framesToRelease) {
+            // This shouldn't happen with a properly behaving client because the client
+            // should only make this call after returning sufficient outstanding buffers
+            // to allow a clean resize.
+            ALOGE("Buffer queue shrink failed -- too many buffers currently in use?");
+        }
+    }
+
+    return true;
+}
+
+
+unsigned EvsCamera::increaseAvailableFrames_Locked(unsigned numToAdd) {
+    // Acquire the graphics buffer allocator
+    GraphicBufferAllocator &alloc(GraphicBufferAllocator::get());
+
+    unsigned added = 0;
+
+    while (added < numToAdd) {
+        buffer_handle_t memHandle = nullptr;
+        status_t result = alloc.allocate(mWidth, mHeight, mFormat, 1, mUsage,
+                                         &memHandle, &mStride, 0, "EvsCamera");
+        if (result != NO_ERROR) {
+            ALOGE("Error %d allocating %d x %d graphics buffer", result, mWidth, mHeight);
+            break;
+        }
+        if (!memHandle) {
+            ALOGE("We didn't get a buffer handle back from the allocator");
+            break;
+        }
+
+        // Find a place to store the new buffer
+        bool stored = false;
+        for (auto&& rec : mBuffers) {
+            if (rec.handle == nullptr) {
+                // Use this existing entry
+                rec.handle = memHandle;
+                rec.inUse = false;
+                stored = true;
+                break;
+            }
+        }
+        if (!stored) {
+            // Add a BufferRecord wrapping this handle to our set of available buffers
+            mBuffers.emplace_back(memHandle);
+        }
+
+        mFramesAllowed++;
+        added++;
+    }
+
+    return added;
+}
+
+
+unsigned EvsCamera::decreaseAvailableFrames_Locked(unsigned numToRemove) {
+    // Acquire the graphics buffer allocator
+    GraphicBufferAllocator &alloc(GraphicBufferAllocator::get());
+
+    unsigned removed = 0;
+
+    for (auto&& rec : mBuffers) {
+        // Is this record not in use, but holding a buffer that we can free?
+        if ((rec.inUse == false) && (rec.handle != nullptr)) {
+            // Release buffer and update the record so we can recognize it as "empty"
+            alloc.free(rec.handle);
+            rec.handle = nullptr;
+
+            mFramesAllowed--;
+            removed++;
+
+            if (removed == numToRemove) {
+                break;
+            }
+        }
+    }
+
+    return removed;
+}
+
+
+// This is the asynchronous frame generation thread that runs in parallel with the
+// main serving thread.  There is one for each active camera instance.
+void EvsCamera::generateFrames() {
+    ALOGD("Frame generation loop started");
+
+    unsigned idx;
+
+    while (true) {
+        bool timeForFrame = false;
+        nsecs_t startTime = systemTime(SYSTEM_TIME_MONOTONIC);
+
+        // Lock scope for updating shared state
+        {
+            std::lock_guard<std::mutex> lock(mAccessLock);
+
+            if (mStreamState != RUNNING) {
+                // Break out of our main thread loop
+                break;
+            }
+
+            // Are we allowed to issue another buffer?
+            if (mFramesInUse >= mFramesAllowed) {
+                // Can't do anything right now -- skip this frame
+                ALOGW("Skipped a frame because too many are in flight\n");
+            } else {
+                // Identify an available buffer to fill
+                for (idx = 0; idx < mBuffers.size(); idx++) {
+                    if (!mBuffers[idx].inUse) {
+                        if (mBuffers[idx].handle != nullptr) {
+                            // Found an available record, so stop looking
+                            break;
+                        }
+                    }
+                }
+                if (idx >= mBuffers.size()) {
+                    // This shouldn't happen since we already checked mFramesInUse vs mFramesAllowed
+                    ALOGE("Failed to find an available buffer slot\n");
+                } else {
+                    // We're going to make the frame busy
+                    mBuffers[idx].inUse = true;
+                    mFramesInUse++;
+                    timeForFrame = true;
+                }
+            }
+        }
+
+        if (timeForFrame) {
+            // Assemble the buffer description we'll transmit below
+            BufferDesc_1_1 newBuffer = {};
+            AHardwareBuffer_Desc* pDesc =
+                reinterpret_cast<AHardwareBuffer_Desc *>(&newBuffer.buffer.description);
+            pDesc->width = mWidth;
+            pDesc->height = mHeight;
+            pDesc->layers = 1;
+            pDesc->format = mFormat;
+            pDesc->usage = mUsage;
+            pDesc->stride = mStride;
+            newBuffer.buffer.nativeHandle = mBuffers[idx].handle;
+            newBuffer.pixelSize = sizeof(uint32_t);
+            newBuffer.bufferId = idx;
+            newBuffer.deviceId = mDescription.v1.cameraId;
+            newBuffer.timestamp = elapsedRealtimeNano();
+
+            // Write test data into the image buffer
+            fillTestFrame(newBuffer);
+
+            // Issue the (asynchronous) callback to the client -- can't be holding the lock
+            hidl_vec<BufferDesc_1_1> frames;
+            frames.resize(1);
+            frames[0] = newBuffer;
+            auto result = mStream->deliverFrame_1_1(frames);
+            if (result.isOk()) {
+                ALOGD("Delivered %p as id %d",
+                      newBuffer.buffer.nativeHandle.getNativeHandle(), newBuffer.bufferId);
+            } else {
+                // This can happen if the client dies and is likely unrecoverable.
+                // To avoid consuming resources generating failing calls, we stop sending
+                // frames.  Note, however, that the stream remains in the "STREAMING" state
+                // until cleaned up on the main thread.
+                ALOGE("Frame delivery call failed in the transport layer.");
+
+                // Since we didn't actually deliver it, mark the frame as available
+                std::lock_guard<std::mutex> lock(mAccessLock);
+                mBuffers[idx].inUse = false;
+                mFramesInUse--;
+
+                break;
+            }
+        }
+
+        // We arbitrarily choose to generate frames at 12 fps to ensure we pass the 10fps test requirement
+        static const int kTargetFrameRate = 12;
+        static const nsecs_t kTargetFrameTimeUs = 1000*1000 / kTargetFrameRate;
+        const nsecs_t now = systemTime(SYSTEM_TIME_MONOTONIC);
+        const nsecs_t workTimeUs = (now - startTime) / 1000;
+        const nsecs_t sleepDurationUs = kTargetFrameTimeUs - workTimeUs;
+        if (sleepDurationUs > 0) {
+            usleep(sleepDurationUs);
+        }
+    }
+
+    // If we've been asked to stop, send an event to signal the actual end of stream
+    EvsEventDesc event;
+    event.aType = EvsEventType::STREAM_STOPPED;
+    auto result = mStream->notify(event);
+    if (!result.isOk()) {
+        ALOGE("Error delivering end of stream marker");
+    }
+
+    return;
+}
+
+
+void EvsCamera::fillTestFrame(const BufferDesc_1_1& buff) {
+    // Lock our output buffer for writing
+    uint32_t *pixels = nullptr;
+    const AHardwareBuffer_Desc* pDesc =
+        reinterpret_cast<const AHardwareBuffer_Desc *>(&buff.buffer.description);
+    GraphicBufferMapper &mapper = GraphicBufferMapper::get();
+    mapper.lock(buff.buffer.nativeHandle,
+                GRALLOC_USAGE_SW_WRITE_OFTEN | GRALLOC_USAGE_SW_READ_NEVER,
+                android::Rect(pDesc->width, pDesc->height),
+                (void **) &pixels);
+
+    // If we failed to lock the pixel buffer, we're about to crash, but log it first
+    if (!pixels) {
+        ALOGE("Camera failed to gain access to image buffer for writing");
+    }
+
+    // Fill in the test pixels
+    for (unsigned row = 0; row < pDesc->height; row++) {
+        for (unsigned col = 0; col < pDesc->width; col++) {
+            // Index into the row to check the pixel at this column.
+            // We expect 0xFF in the LSB channel, a vertical gradient in the
+            // second channel, a horitzontal gradient in the third channel, and
+            // 0xFF in the MSB.
+            // The exception is the very first 32 bits which is used for the
+            // time varying frame signature to avoid getting fooled by a static image.
+            uint32_t expectedPixel = 0xFF0000FF           | // MSB and LSB
+                                     ((row & 0xFF) <<  8) | // vertical gradient
+                                     ((col & 0xFF) << 16);  // horizontal gradient
+            if ((row | col) == 0) {
+                static uint32_t sFrameTicker = 0;
+                expectedPixel = (sFrameTicker) & 0xFF;
+                sFrameTicker++;
+            }
+            pixels[col] = expectedPixel;
+        }
+        // Point to the next row
+        // NOTE:  stride retrieved from gralloc is in units of pixels
+        pixels = pixels + pDesc->stride;
+    }
+
+    // Release our output buffer
+    mapper.unlock(buff.buffer.nativeHandle);
+}
+
+
+void EvsCamera::fillTestFrame(const BufferDesc_1_0& buff) {
+    BufferDesc_1_1 newBufDesc = {};
+    AHardwareBuffer_Desc desc = {
+        buff.width,   // width
+        buff.height,  // height
+        1,            // layers, always 1 for EVS
+        buff.format,  // One of AHardwareBuffer_Format
+        buff.usage,   // Combination of AHardwareBuffer_UsageFlags
+        buff.stride,  // Row stride in pixels
+        0,            // Reserved
+        0             // Reserved
+    };
+    memcpy(&desc, &newBufDesc.buffer.description, sizeof(desc));
+    newBufDesc.buffer.nativeHandle = buff.memHandle;
+    newBufDesc.pixelSize = buff.pixelSize;
+    newBufDesc.bufferId = buff.bufferId;
+
+    return fillTestFrame(newBufDesc);
+}
+
+
+void EvsCamera::returnBuffer(const uint32_t bufferId, const buffer_handle_t memHandle) {
+    std::lock_guard <std::mutex> lock(mAccessLock);
+
+    if (memHandle == nullptr) {
+        ALOGE("ignoring doneWithFrame called with null handle");
+    } else if (bufferId >= mBuffers.size()) {
+        ALOGE("ignoring doneWithFrame called with invalid bufferId %d (max is %zu)",
+              bufferId, mBuffers.size()-1);
+    } else if (!mBuffers[bufferId].inUse) {
+        ALOGE("ignoring doneWithFrame called on frame %d which is already free",
+              bufferId);
+    } else {
+        // Mark the frame as available
+        mBuffers[bufferId].inUse = false;
+        mFramesInUse--;
+
+        // If this frame's index is high in the array, try to move it down
+        // to improve locality after mFramesAllowed has been reduced.
+        if (bufferId >= mFramesAllowed) {
+            // Find an empty slot lower in the array (which should always exist in this case)
+            for (auto&& rec : mBuffers) {
+                if (rec.handle == nullptr) {
+                    rec.handle = mBuffers[bufferId].handle;
+                    mBuffers[bufferId].handle = nullptr;
+                    break;
+                }
+            }
+        }
+    }
+}
+
+
+sp<EvsCamera> EvsCamera::Create(const char *deviceName) {
+    unique_ptr<ConfigManager::CameraInfo> nullCamInfo = nullptr;
+
+    return Create(deviceName, nullCamInfo);
+}
+
+
+sp<EvsCamera> EvsCamera::Create(const char *deviceName,
+                                unique_ptr<ConfigManager::CameraInfo> &camInfo,
+                                const Stream *streamCfg) {
+    sp<EvsCamera> evsCamera = new EvsCamera(deviceName, camInfo);
+    if (evsCamera == nullptr) {
+        return nullptr;
+    }
+
+    /* default implementation does not use a given configuration */
+    (void)streamCfg;
+
+    /* Use the first resolution from the list for the testing */
+    auto it = camInfo->streamConfigurations.begin();
+    evsCamera->mWidth = it->second[1];
+    evsCamera->mHeight = it->second[2];
+    evsCamera->mDescription.v1.vendorFlags = 0xFFFFFFFF; // Arbitrary test value
+
+    evsCamera->mFormat = HAL_PIXEL_FORMAT_RGBA_8888;
+    evsCamera->mUsage  = GRALLOC_USAGE_HW_TEXTURE | GRALLOC_USAGE_HW_CAMERA_WRITE |
+                         GRALLOC_USAGE_SW_READ_RARELY | GRALLOC_USAGE_SW_WRITE_RARELY;
+
+    return evsCamera;
+}
+
+
+} // namespace implementation
+} // namespace V1_0
+} // namespace evs
+} // namespace automotive
+} // namespace hardware
+} // namespace android
diff --git a/automotive/evs/1.1/default/EvsCamera.h b/automotive/evs/1.1/default/EvsCamera.h
new file mode 100644
index 0000000..72a1b57
--- /dev/null
+++ b/automotive/evs/1.1/default/EvsCamera.h
@@ -0,0 +1,156 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSCAMERA_H
+#define ANDROID_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSCAMERA_H
+
+#include <android/hardware/automotive/evs/1.1/types.h>
+#include <android/hardware/automotive/evs/1.1/IEvsCamera.h>
+#include <android/hardware/automotive/evs/1.1/IEvsCameraStream.h>
+#include <android/hardware/automotive/evs/1.0/IEvsDisplay.h>
+#include <ui/GraphicBuffer.h>
+
+#include <thread>
+
+#include "ConfigManager.h"
+
+using BufferDesc_1_0 = ::android::hardware::automotive::evs::V1_0::BufferDesc;
+using BufferDesc_1_1 = ::android::hardware::automotive::evs::V1_1::BufferDesc;
+using IEvsCameraStream_1_0 = ::android::hardware::automotive::evs::V1_0::IEvsCameraStream;
+using IEvsCameraStream_1_1 = ::android::hardware::automotive::evs::V1_1::IEvsCameraStream;
+using ::android::hardware::automotive::evs::V1_0::EvsResult;
+using ::android::hardware::automotive::evs::V1_0::CameraDesc;
+using ::android::hardware::automotive::evs::V1_0::IEvsDisplay;
+
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace evs {
+namespace V1_1 {
+namespace implementation {
+
+
+// From EvsEnumerator.h
+class EvsEnumerator;
+
+
+class EvsCamera : public IEvsCamera {
+public:
+    // Methods from ::android::hardware::automotive::evs::V1_0::IEvsCamera follow.
+    Return<void>      getCameraInfo(getCameraInfo_cb _hidl_cb)  override;
+    Return<EvsResult> setMaxFramesInFlight(uint32_t bufferCount) override;
+    Return<EvsResult> startVideoStream(const ::android::sp<IEvsCameraStream_1_0>& stream) override;
+    Return<void>      stopVideoStream() override;
+    Return<void>      doneWithFrame(const BufferDesc_1_0& buffer) override;
+
+    Return<int32_t>   getExtendedInfo(uint32_t opaqueIdentifier) override;
+    Return<EvsResult> setExtendedInfo(uint32_t opaqueIdentifier, int32_t opaqueValue) override;
+
+    // Methods from ::android::hardware::automotive::evs::V1_1::IEvsCamera follow.
+    Return<void>      getCameraInfo_1_1(getCameraInfo_1_1_cb _hidl_cb)  override;
+    Return<void>      getPhysicalCameraInfo(const hidl_string& id,
+                                            getPhysicalCameraInfo_cb _hidl_cb)  override;
+    Return<EvsResult> pauseVideoStream() override;
+    Return<EvsResult> resumeVideoStream() override;
+    Return<EvsResult> doneWithFrame_1_1(const hidl_vec<BufferDesc_1_1>& buffer) override;
+    Return<EvsResult> setMaster() override;
+    Return<EvsResult> forceMaster(const sp<IEvsDisplay>& display) override;
+    Return<EvsResult> unsetMaster() override;
+    Return<void>      getParameterList(getParameterList_cb _hidl_cb) override;
+    Return<void>      getIntParameterRange(CameraParam id,
+                                           getIntParameterRange_cb _hidl_cb) override;
+    Return<void>      setIntParameter(CameraParam id, int32_t value,
+                                      setIntParameter_cb _hidl_cb) override;
+    Return<void>      getIntParameter(CameraParam id,
+                                      getIntParameter_cb _hidl_cb) override;
+
+    static sp<EvsCamera> Create(const char *deviceName);
+    static sp<EvsCamera> Create(const char *deviceName,
+                                unique_ptr<ConfigManager::CameraInfo> &camInfo,
+                                const Stream *streamCfg = nullptr);
+    EvsCamera(const EvsCamera&) = delete;
+    EvsCamera& operator=(const EvsCamera&) = delete;
+
+    virtual ~EvsCamera() override;
+    void forceShutdown();   // This gets called if another caller "steals" ownership of the camera
+
+    const CameraDesc& getDesc() { return mDescription; };
+
+    static const char kCameraName_Backup[];
+
+private:
+    EvsCamera(const char *id,
+              unique_ptr<ConfigManager::CameraInfo> &camInfo);
+    // These three functions are expected to be called while mAccessLock is held
+    //
+    bool setAvailableFrames_Locked(unsigned bufferCount);
+    unsigned increaseAvailableFrames_Locked(unsigned numToAdd);
+    unsigned decreaseAvailableFrames_Locked(unsigned numToRemove);
+
+    void generateFrames();
+    void fillTestFrame(const BufferDesc_1_0& buff);
+    void fillTestFrame(const BufferDesc_1_1& buff);
+    void returnBuffer(const uint32_t bufferId, const buffer_handle_t memHandle);
+
+    sp<EvsEnumerator> mEnumerator;  // The enumerator object that created this camera
+
+    CameraDesc mDescription = {};   // The properties of this camera
+
+    std::thread mCaptureThread;     // The thread we'll use to synthesize frames
+
+    uint32_t mWidth  = 0;           // Horizontal pixel count in the buffers
+    uint32_t mHeight = 0;           // Vertical pixel count in the buffers
+    uint32_t mFormat = 0;           // Values from android_pixel_format_t
+    uint64_t mUsage  = 0;           // Values from from Gralloc.h
+    uint32_t mStride = 0;           // Bytes per line in the buffers
+
+    sp<IEvsCameraStream_1_1> mStream = nullptr;  // The callback used to deliver each frame
+
+    struct BufferRecord {
+        buffer_handle_t handle;
+        bool inUse;
+
+        explicit BufferRecord(buffer_handle_t h) : handle(h), inUse(false) {};
+    };
+
+    std::vector <BufferRecord> mBuffers;  // Graphics buffers to transfer images
+    unsigned mFramesAllowed;              // How many buffers are we currently using
+    unsigned mFramesInUse;                // How many buffers are currently outstanding
+
+    enum StreamStateValues {
+        STOPPED,
+        RUNNING,
+        STOPPING,
+        DEAD,
+    };
+    StreamStateValues mStreamState;
+
+    // Synchronization necessary to deconflict mCaptureThread from the main service thread
+    std::mutex mAccessLock;
+
+    // Static camera module information
+    unique_ptr<ConfigManager::CameraInfo> &mCameraInfo;
+};
+
+} // namespace implementation
+} // namespace V1_1
+} // namespace evs
+} // namespace automotive
+} // namespace hardware
+} // namespace android
+
+#endif  // ANDROID_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSCAMERA_H
diff --git a/automotive/evs/1.1/default/EvsDisplay.cpp b/automotive/evs/1.1/default/EvsDisplay.cpp
new file mode 100644
index 0000000..74c099a
--- /dev/null
+++ b/automotive/evs/1.1/default/EvsDisplay.cpp
@@ -0,0 +1,335 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "android.hardware.automotive.evs@1.1-service"
+
+#include "EvsDisplay.h"
+
+#include <ui/GraphicBufferAllocator.h>
+#include <ui/GraphicBufferMapper.h>
+
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace evs {
+namespace V1_1 {
+namespace implementation {
+
+
+EvsDisplay::EvsDisplay() {
+    ALOGD("EvsDisplay instantiated");
+
+    // Set up our self description
+    // NOTE:  These are arbitrary values chosen for testing
+    mInfo.displayId             = "Mock Display";
+    mInfo.vendorFlags           = 3870;
+
+    // Assemble the buffer description we'll use for our render target
+    mBuffer.width       = 320;
+    mBuffer.height      = 240;
+    mBuffer.format      = HAL_PIXEL_FORMAT_RGBA_8888;
+    mBuffer.usage       = GRALLOC_USAGE_HW_RENDER | GRALLOC_USAGE_HW_COMPOSER;
+    mBuffer.bufferId    = 0x3870;  // Arbitrary magic number for self recognition
+    mBuffer.pixelSize   = 4;
+}
+
+
+EvsDisplay::~EvsDisplay() {
+    ALOGD("EvsDisplay being destroyed");
+    forceShutdown();
+}
+
+
+/**
+ * This gets called if another caller "steals" ownership of the display
+ */
+void EvsDisplay::forceShutdown()
+{
+    ALOGD("EvsDisplay forceShutdown");
+    std::lock_guard<std::mutex> lock(mAccessLock);
+
+    // If the buffer isn't being held by a remote client, release it now as an
+    // optimization to release the resources more quickly than the destructor might
+    // get called.
+    if (mBuffer.memHandle) {
+        // Report if we're going away while a buffer is outstanding
+        if (mFrameBusy) {
+            ALOGE("EvsDisplay going down while client is holding a buffer");
+        }
+
+        // Drop the graphics buffer we've been using
+        GraphicBufferAllocator& alloc(GraphicBufferAllocator::get());
+        alloc.free(mBuffer.memHandle);
+        mBuffer.memHandle = nullptr;
+    }
+
+    // Put this object into an unrecoverable error state since somebody else
+    // is going to own the display now.
+    mRequestedState = DisplayState::DEAD;
+}
+
+
+/**
+ * Returns basic information about the EVS display provided by the system.
+ * See the description of the DisplayDesc structure for details.
+ */
+Return<void> EvsDisplay::getDisplayInfo(getDisplayInfo_cb _hidl_cb)  {
+    ALOGD("getDisplayInfo");
+
+    // Send back our self description
+    _hidl_cb(mInfo);
+    return Void();
+}
+
+
+/**
+ * Clients may set the display state to express their desired state.
+ * The HAL implementation must gracefully accept a request for any state
+ * while in any other state, although the response may be to ignore the request.
+ * The display is defined to start in the NOT_VISIBLE state upon initialization.
+ * The client is then expected to request the VISIBLE_ON_NEXT_FRAME state, and
+ * then begin providing video.  When the display is no longer required, the client
+ * is expected to request the NOT_VISIBLE state after passing the last video frame.
+ */
+Return<EvsResult> EvsDisplay::setDisplayState(DisplayState state) {
+    ALOGD("setDisplayState");
+    std::lock_guard<std::mutex> lock(mAccessLock);
+
+    if (mRequestedState == DisplayState::DEAD) {
+        // This object no longer owns the display -- it's been superceeded!
+        return EvsResult::OWNERSHIP_LOST;
+    }
+
+    // Ensure we recognize the requested state so we don't go off the rails
+    if (state < DisplayState::NUM_STATES) {
+        // Record the requested state
+        mRequestedState = state;
+        return EvsResult::OK;
+    }
+    else {
+        // Turn off the display if asked for an unrecognized state
+        mRequestedState = DisplayState::NOT_VISIBLE;
+        return EvsResult::INVALID_ARG;
+    }
+}
+
+
+/**
+ * The HAL implementation should report the actual current state, which might
+ * transiently differ from the most recently requested state.  Note, however, that
+ * the logic responsible for changing display states should generally live above
+ * the device layer, making it undesirable for the HAL implementation to
+ * spontaneously change display states.
+ */
+Return<DisplayState> EvsDisplay::getDisplayState()  {
+    ALOGD("getDisplayState");
+    std::lock_guard<std::mutex> lock(mAccessLock);
+
+    return mRequestedState;
+}
+
+
+/**
+ * This call returns a handle to a frame buffer associated with the display.
+ * This buffer may be locked and written to by software and/or GL.  This buffer
+ * must be returned via a call to returnTargetBufferForDisplay() even if the
+ * display is no longer visible.
+ */
+// TODO: We need to know if/when our client dies so we can get the buffer back! (blocked b/31632518)
+Return<void> EvsDisplay::getTargetBuffer(getTargetBuffer_cb _hidl_cb)  {
+    ALOGD("getTargetBuffer");
+    std::lock_guard<std::mutex> lock(mAccessLock);
+
+    if (mRequestedState == DisplayState::DEAD) {
+        ALOGE("Rejecting buffer request from object that lost ownership of the display.");
+        BufferDesc_1_0 nullBuff = {};
+        _hidl_cb(nullBuff);
+        return Void();
+    }
+
+    // If we don't already have a buffer, allocate one now
+    if (!mBuffer.memHandle) {
+        // Allocate the buffer that will hold our displayable image
+        buffer_handle_t handle = nullptr;
+        GraphicBufferAllocator& alloc(GraphicBufferAllocator::get());
+        status_t result = alloc.allocate(
+            mBuffer.width, mBuffer.height, mBuffer.format, 1, mBuffer.usage,
+            &handle, &mBuffer.stride, 0, "EvsDisplay");
+        if (result != NO_ERROR) {
+            ALOGE("Error %d allocating %d x %d graphics buffer",
+                  result, mBuffer.width, mBuffer.height);
+            BufferDesc_1_0 nullBuff = {};
+            _hidl_cb(nullBuff);
+            return Void();
+        }
+        if (!handle) {
+            ALOGE("We didn't get a buffer handle back from the allocator");
+            BufferDesc_1_0 nullBuff = {};
+            _hidl_cb(nullBuff);
+            return Void();
+        }
+
+        mBuffer.memHandle = handle;
+        mFrameBusy = false;
+        ALOGD("Allocated new buffer %p with stride %u",
+              mBuffer.memHandle.getNativeHandle(), mBuffer.stride);
+    }
+
+    // Do we have a frame available?
+    if (mFrameBusy) {
+        // This means either we have a 2nd client trying to compete for buffers
+        // (an unsupported mode of operation) or else the client hasn't returned
+        // a previously issued buffer yet (they're behaving badly).
+        // NOTE:  We have to make the callback even if we have nothing to provide
+        ALOGE("getTargetBuffer called while no buffers available.");
+        BufferDesc_1_0 nullBuff = {};
+        _hidl_cb(nullBuff);
+        return Void();
+    } else {
+        // Mark our buffer as busy
+        mFrameBusy = true;
+
+        // Send the buffer to the client
+        ALOGD("Providing display buffer handle %p as id %d",
+              mBuffer.memHandle.getNativeHandle(), mBuffer.bufferId);
+        _hidl_cb(mBuffer);
+        return Void();
+    }
+}
+
+
+/**
+ * This call tells the display that the buffer is ready for display.
+ * The buffer is no longer valid for use by the client after this call.
+ */
+Return<EvsResult> EvsDisplay::returnTargetBufferForDisplayImpl(const uint32_t bufferId, const buffer_handle_t memHandle) {
+    ALOGD("returnTargetBufferForDisplay %p", memHandle);
+    std::lock_guard<std::mutex> lock(mAccessLock);
+
+    // Nobody should call us with a null handle
+    if (!memHandle) {
+        ALOGE ("returnTargetBufferForDisplay called without a valid buffer handle.\n");
+        return EvsResult::INVALID_ARG;
+    }
+    if (bufferId != mBuffer.bufferId) {
+        ALOGE ("Got an unrecognized frame returned.\n");
+        return EvsResult::INVALID_ARG;
+    }
+    if (!mFrameBusy) {
+        ALOGE ("A frame was returned with no outstanding frames.\n");
+        return EvsResult::BUFFER_NOT_AVAILABLE;
+    }
+
+    mFrameBusy = false;
+
+    // If we've been displaced by another owner of the display, then we can't do anything else
+    if (mRequestedState == DisplayState::DEAD) {
+        return EvsResult::OWNERSHIP_LOST;
+    }
+
+    // If we were waiting for a new frame, this is it!
+    if (mRequestedState == DisplayState::VISIBLE_ON_NEXT_FRAME) {
+        mRequestedState = DisplayState::VISIBLE;
+    }
+
+    // Validate we're in an expected state
+    if (mRequestedState != DisplayState::VISIBLE) {
+        // We shouldn't get frames back when we're not visible.
+        ALOGE ("Got an unexpected frame returned while not visible - ignoring.\n");
+    } else {
+        // This is where the buffer would be made visible.
+        // For now we simply validate it has the data we expect in it by reading it back
+
+        // Lock our display buffer for reading
+        uint32_t* pixels = nullptr;
+        GraphicBufferMapper &mapper = GraphicBufferMapper::get();
+        mapper.lock(mBuffer.memHandle,
+                    GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_NEVER,
+                    android::Rect(mBuffer.width, mBuffer.height),
+                    (void **)&pixels);
+
+        // If we failed to lock the pixel buffer, we're about to crash, but log it first
+        if (!pixels) {
+            ALOGE("Display failed to gain access to image buffer for reading");
+        }
+
+        // Check the test pixels
+        bool frameLooksGood = true;
+        for (unsigned row = 0; row < mBuffer.height; row++) {
+            for (unsigned col = 0; col < mBuffer.width; col++) {
+                // Index into the row to check the pixel at this column.
+                // We expect 0xFF in the LSB channel, a vertical gradient in the
+                // second channel, a horitzontal gradient in the third channel, and
+                // 0xFF in the MSB.
+                // The exception is the very first 32 bits which is used for the
+                // time varying frame signature to avoid getting fooled by a static image.
+                uint32_t expectedPixel = 0xFF0000FF           | // MSB and LSB
+                                         ((row & 0xFF) <<  8) | // vertical gradient
+                                         ((col & 0xFF) << 16);  // horizontal gradient
+                if ((row | col) == 0) {
+                    // we'll check the "uniqueness" of the frame signature below
+                    continue;
+                }
+                // Walk across this row (we'll step rows below)
+                uint32_t receivedPixel = pixels[col];
+                if (receivedPixel != expectedPixel) {
+                    ALOGE("Pixel check mismatch in frame buffer");
+                    frameLooksGood = false;
+                    break;
+                }
+            }
+
+            if (!frameLooksGood) {
+                break;
+            }
+
+            // Point to the next row (NOTE:  gralloc reports stride in units of pixels)
+            pixels = pixels + mBuffer.stride;
+        }
+
+        // Ensure we don't see the same buffer twice without it being rewritten
+        static uint32_t prevSignature = ~0;
+        uint32_t signature = pixels[0] & 0xFF;
+        if (prevSignature == signature) {
+            frameLooksGood = false;
+            ALOGE("Duplicate, likely stale frame buffer detected");
+        }
+
+
+        // Release our output buffer
+        mapper.unlock(mBuffer.memHandle);
+
+        if (!frameLooksGood) {
+            return EvsResult::UNDERLYING_SERVICE_ERROR;
+        }
+    }
+
+    return EvsResult::OK;
+}
+
+
+Return<EvsResult> EvsDisplay::returnTargetBufferForDisplay(const BufferDesc_1_0& buffer)  {
+    return returnTargetBufferForDisplayImpl(buffer.bufferId, buffer.memHandle);
+}
+
+
+} // namespace implementation
+} // namespace V1_1
+} // namespace evs
+} // namespace automotive
+} // namespace hardware
+} // namespace android
diff --git a/automotive/evs/1.1/default/EvsDisplay.h b/automotive/evs/1.1/default/EvsDisplay.h
new file mode 100644
index 0000000..2a56535
--- /dev/null
+++ b/automotive/evs/1.1/default/EvsDisplay.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSDISPLAY_H
+#define ANDROID_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSDISPLAY_H
+
+#include <android/hardware/automotive/evs/1.0/IEvsDisplay.h>
+#include <ui/GraphicBuffer.h>
+
+using ::android::hardware::automotive::evs::V1_0::IEvsDisplay;
+using ::android::hardware::automotive::evs::V1_0::DisplayDesc;
+using ::android::hardware::automotive::evs::V1_0::DisplayState;
+using ::android::hardware::automotive::evs::V1_0::EvsResult;
+using BufferDesc_1_0 = ::android::hardware::automotive::evs::V1_0::BufferDesc;
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace evs {
+namespace V1_1 {
+namespace implementation {
+
+
+class EvsDisplay : public IEvsDisplay {
+public:
+    // Methods from ::android::hardware::automotive::evs::V1_0::IEvsDisplay follow.
+    Return<void>         getDisplayInfo(getDisplayInfo_cb _hidl_cb)  override;
+    Return<EvsResult>    setDisplayState(DisplayState state)  override;
+    Return<DisplayState> getDisplayState()  override;
+    Return<void>         getTargetBuffer(getTargetBuffer_cb _hidl_cb)  override;
+    Return<EvsResult>    returnTargetBufferForDisplay(const BufferDesc_1_0& buffer)  override;
+
+
+    // Implementation details
+    EvsDisplay();
+    virtual ~EvsDisplay() override;
+
+    void forceShutdown();   // This gets called if another caller "steals" ownership of the display
+    Return<EvsResult> returnTargetBufferForDisplayImpl(const uint32_t bufferId,
+                                                       const buffer_handle_t memHandle);
+
+private:
+    DisplayDesc     mInfo           = {};
+    BufferDesc_1_0  mBuffer         = {};       // A graphics buffer into which we'll store images
+
+    bool            mFrameBusy      = false;    // A flag telling us our buffer is in use
+    DisplayState    mRequestedState = DisplayState::NOT_VISIBLE;
+
+    std::mutex      mAccessLock;
+};
+
+} // namespace implementation
+} // namespace V1_1
+} // namespace evs
+} // namespace automotive
+} // namespace hardware
+} // namespace android
+
+#endif  // ANDROID_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSDISPLAY_H
diff --git a/automotive/evs/1.1/default/EvsEnumerator.cpp b/automotive/evs/1.1/default/EvsEnumerator.cpp
new file mode 100644
index 0000000..cb7403a
--- /dev/null
+++ b/automotive/evs/1.1/default/EvsEnumerator.cpp
@@ -0,0 +1,308 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "android.hardware.automotive.evs@1.1-service"
+
+#include "EvsEnumerator.h"
+#include "EvsCamera.h"
+#include "EvsDisplay.h"
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace evs {
+namespace V1_1 {
+namespace implementation {
+
+
+// NOTE:  All members values are static so that all clients operate on the same state
+//        That is to say, this is effectively a singleton despite the fact that HIDL
+//        constructs a new instance for each client.
+std::list<EvsEnumerator::CameraRecord>   EvsEnumerator::sCameraList;
+wp<EvsDisplay>                           EvsEnumerator::sActiveDisplay;
+unique_ptr<ConfigManager>                EvsEnumerator::sConfigManager;
+
+
+EvsEnumerator::EvsEnumerator() {
+    ALOGD("EvsEnumerator created");
+
+    // Add sample camera data to our list of cameras
+    // In a real driver, this would be expected to can the available hardware
+    sConfigManager =
+        ConfigManager::Create("/vendor/etc/automotive/evs/evs_default_configuration.xml");
+    for (auto v : sConfigManager->getCameraList()) {
+        sCameraList.emplace_back(v.c_str());
+    }
+}
+
+
+// Methods from ::android::hardware::automotive::evs::V1_0::IEvsEnumerator follow.
+Return<void> EvsEnumerator::getCameraList(getCameraList_cb _hidl_cb)  {
+    ALOGD("getCameraList");
+
+    const unsigned numCameras = sCameraList.size();
+
+    // Build up a packed array of CameraDesc for return
+    // NOTE:  Only has to live until the callback returns
+    std::vector<CameraDesc_1_0> descriptions;
+    descriptions.reserve(numCameras);
+    for (const auto& cam : sCameraList) {
+        descriptions.push_back( cam.desc.v1 );
+    }
+
+    // Encapsulate our camera descriptions in the HIDL vec type
+    hidl_vec<CameraDesc_1_0> hidlCameras(descriptions);
+
+    // Send back the results
+    ALOGD("reporting %zu cameras available", hidlCameras.size());
+    _hidl_cb(hidlCameras);
+
+    // HIDL convention says we return Void if we sent our result back via callback
+    return Void();
+}
+
+
+Return<sp<IEvsCamera_1_0>> EvsEnumerator::openCamera(const hidl_string& cameraId) {
+    ALOGD("openCamera");
+
+    // Find the named camera
+    CameraRecord *pRecord = nullptr;
+    for (auto &&cam : sCameraList) {
+        if (cam.desc.v1.cameraId == cameraId) {
+            // Found a match!
+            pRecord = &cam;
+            break;
+        }
+    }
+
+    // Is this a recognized camera id?
+    if (!pRecord) {
+        ALOGE("Requested camera %s not found", cameraId.c_str());
+        return nullptr;
+    }
+
+    // Has this camera already been instantiated by another caller?
+    sp<EvsCamera> pActiveCamera = pRecord->activeInstance.promote();
+    if (pActiveCamera != nullptr) {
+        ALOGW("Killing previous camera because of new caller");
+        closeCamera(pActiveCamera);
+    }
+
+    // Construct a camera instance for the caller
+    if (sConfigManager == nullptr) {
+        pActiveCamera = EvsCamera::Create(cameraId.c_str());
+    } else {
+        pActiveCamera = EvsCamera::Create(cameraId.c_str(),
+                                          sConfigManager->getCameraInfo(cameraId));
+    }
+    pRecord->activeInstance = pActiveCamera;
+    if (pActiveCamera == nullptr) {
+        ALOGE("Failed to allocate new EvsCamera object for %s\n", cameraId.c_str());
+    }
+
+    return pActiveCamera;
+}
+
+
+Return<void> EvsEnumerator::closeCamera(const ::android::sp<IEvsCamera_1_0>& pCamera) {
+    ALOGD("closeCamera");
+
+    auto pCamera_1_1 = IEvsCamera_1_1::castFrom(pCamera).withDefault(nullptr);
+    if (pCamera_1_1 == nullptr) {
+        ALOGE("Ignoring call to closeCamera with null camera ptr");
+        return Void();
+    }
+
+    // Get the camera id so we can find it in our list
+    std::string cameraId;
+    pCamera_1_1->getCameraInfo_1_1([&cameraId](CameraDesc desc) {
+                               cameraId = desc.v1.cameraId;
+                           }
+    );
+
+    // Find the named camera
+    CameraRecord *pRecord = nullptr;
+    for (auto &&cam : sCameraList) {
+        if (cam.desc.v1.cameraId == cameraId) {
+            // Found a match!
+            pRecord = &cam;
+            break;
+        }
+    }
+
+    // Is the display being destroyed actually the one we think is active?
+    if (!pRecord) {
+        ALOGE("Asked to close a camera who's name isn't recognized");
+    } else {
+        sp<EvsCamera> pActiveCamera = pRecord->activeInstance.promote();
+
+        if (pActiveCamera == nullptr) {
+            ALOGE("Somehow a camera is being destroyed when the enumerator didn't know one existed");
+        } else if (pActiveCamera != pCamera_1_1) {
+            // This can happen if the camera was aggressively reopened, orphaning this previous instance
+            ALOGW("Ignoring close of previously orphaned camera - why did a client steal?");
+        } else {
+            // Drop the active camera
+            pActiveCamera->forceShutdown();
+            pRecord->activeInstance = nullptr;
+        }
+    }
+
+    return Void();
+}
+
+
+Return<sp<IEvsDisplay>> EvsEnumerator::openDisplay() {
+    ALOGD("openDisplay");
+
+    // If we already have a display active, then we need to shut it down so we can
+    // give exclusive access to the new caller.
+    sp<EvsDisplay> pActiveDisplay = sActiveDisplay.promote();
+    if (pActiveDisplay != nullptr) {
+        ALOGW("Killing previous display because of new caller");
+        closeDisplay(pActiveDisplay);
+    }
+
+    // Create a new display interface and return it
+    pActiveDisplay = new EvsDisplay();
+    sActiveDisplay = pActiveDisplay;
+
+    ALOGD("Returning new EvsDisplay object %p", pActiveDisplay.get());
+    return pActiveDisplay;
+}
+
+
+Return<void> EvsEnumerator::closeDisplay(const ::android::sp<IEvsDisplay>& pDisplay) {
+    ALOGD("closeDisplay");
+
+    // Do we still have a display object we think should be active?
+    sp<EvsDisplay> pActiveDisplay = sActiveDisplay.promote();
+    if (pActiveDisplay == nullptr) {
+        ALOGE("Somehow a display is being destroyed when the enumerator didn't know one existed");
+    } else if (sActiveDisplay != pDisplay) {
+        ALOGW("Ignoring close of previously orphaned display - why did a client steal?");
+    } else {
+        // Drop the active display
+        pActiveDisplay->forceShutdown();
+        sActiveDisplay = nullptr;
+    }
+
+    return Void();
+}
+
+
+Return<DisplayState> EvsEnumerator::getDisplayState()  {
+    ALOGD("getDisplayState");
+
+    // Do we still have a display object we think should be active?
+    sp<IEvsDisplay> pActiveDisplay = sActiveDisplay.promote();
+    if (pActiveDisplay != nullptr) {
+        return pActiveDisplay->getDisplayState();
+    } else {
+        return DisplayState::NOT_OPEN;
+    }
+}
+
+
+// Methods from ::android::hardware::automotive::evs::V1_1::IEvsEnumerator follow.
+Return<void> EvsEnumerator::getCameraList_1_1(getCameraList_1_1_cb _hidl_cb)  {
+    ALOGD("getCameraList");
+
+    const unsigned numCameras = sCameraList.size();
+
+    // Build up a packed array of CameraDesc for return
+    // NOTE:  Only has to live until the callback returns
+    std::vector<CameraDesc_1_1> descriptions;
+    descriptions.reserve(numCameras);
+    for (const auto& cam : sCameraList) {
+        descriptions.push_back( cam.desc );
+    }
+
+    // Encapsulate our camera descriptions in the HIDL vec type
+    hidl_vec<CameraDesc_1_1> hidlCameras(descriptions);
+
+    // Send back the results
+    ALOGD("reporting %zu cameras available", hidlCameras.size());
+    _hidl_cb(hidlCameras);
+
+    // HIDL convention says we return Void if we sent our result back via callback
+    return Void();
+}
+
+Return<sp<IEvsCamera_1_1>>
+EvsEnumerator::openCamera_1_1(const hidl_string& cameraId,
+                              const Stream& streamCfg) {
+    // Find the named camera
+    CameraRecord *pRecord = nullptr;
+    for (auto &&cam : sCameraList) {
+        if (cam.desc.v1.cameraId == cameraId) {
+            // Found a match!
+            pRecord = &cam;
+            break;
+        }
+    }
+
+    // Is this a recognized camera id?
+    if (!pRecord) {
+        ALOGE("Requested camera %s not found", cameraId.c_str());
+        return nullptr;
+    }
+
+    // Has this camera already been instantiated by another caller?
+    sp<EvsCamera> pActiveCamera = pRecord->activeInstance.promote();
+    if (pActiveCamera != nullptr) {
+        ALOGW("Killing previous camera because of new caller");
+        closeCamera(pActiveCamera);
+    }
+
+    // Construct a camera instance for the caller
+    if (sConfigManager == nullptr) {
+        pActiveCamera = EvsCamera::Create(cameraId.c_str());
+    } else {
+        pActiveCamera = EvsCamera::Create(cameraId.c_str(),
+                                          sConfigManager->getCameraInfo(cameraId),
+                                          &streamCfg);
+    }
+
+    pRecord->activeInstance = pActiveCamera;
+    if (pActiveCamera == nullptr) {
+        ALOGE("Failed to allocate new EvsCamera object for %s\n", cameraId.c_str());
+    }
+
+    return pActiveCamera;
+}
+
+
+EvsEnumerator::CameraRecord* EvsEnumerator::findCameraById(const std::string& cameraId) {
+    // Find the named camera
+    CameraRecord *pRecord = nullptr;
+    for (auto &&cam : sCameraList) {
+        if (cam.desc.v1.cameraId == cameraId) {
+            // Found a match!
+            pRecord = &cam;
+            break;
+        }
+    }
+
+    return pRecord;
+}
+
+} // namespace implementation
+} // namespace V1_1
+} // namespace evs
+} // namespace automotive
+} // namespace hardware
+} // namespace android
diff --git a/automotive/evs/1.1/default/EvsEnumerator.h b/automotive/evs/1.1/default/EvsEnumerator.h
new file mode 100644
index 0000000..ca35dc6
--- /dev/null
+++ b/automotive/evs/1.1/default/EvsEnumerator.h
@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSCAMERAENUMERATOR_H
+#define ANDROID_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSCAMERAENUMERATOR_H
+
+#include <android/hardware/automotive/evs/1.1/IEvsEnumerator.h>
+#include <android/hardware/automotive/evs/1.1/IEvsCamera.h>
+
+#include <list>
+
+#include "ConfigManager.h"
+
+using ::android::hardware::automotive::evs::V1_0::EvsResult;
+using ::android::hardware::automotive::evs::V1_0::IEvsDisplay;
+using ::android::hardware::automotive::evs::V1_0::DisplayState;
+using IEvsCamera_1_0 = ::android::hardware::automotive::evs::V1_0::IEvsCamera;
+using IEvsCamera_1_1 = ::android::hardware::automotive::evs::V1_1::IEvsCamera;
+using CameraDesc_1_0 = ::android::hardware::automotive::evs::V1_0::CameraDesc;
+using CameraDesc_1_1 = ::android::hardware::automotive::evs::V1_1::CameraDesc;
+
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace evs {
+namespace V1_1 {
+namespace implementation {
+
+
+class EvsCamera;    // from EvsCamera.h
+class EvsDisplay;   // from EvsDisplay.h
+
+
+class EvsEnumerator : public IEvsEnumerator {
+public:
+    // Methods from ::android::hardware::automotive::evs::V1_0::IEvsEnumerator follow.
+    Return<void>                getCameraList(getCameraList_cb _hidl_cb)  override;
+    Return<sp<IEvsCamera_1_0>>  openCamera(const hidl_string& cameraId) override;
+    Return<void>                closeCamera(const ::android::sp<IEvsCamera_1_0>& carCamera)  override;
+    Return<sp<IEvsDisplay>>     openDisplay()  override;
+    Return<void>                closeDisplay(const ::android::sp<IEvsDisplay>& display)  override;
+    Return<DisplayState>        getDisplayState()  override;
+
+    // Methods from ::android::hardware::automotive::evs::V1_1::IEvsEnumerator follow.
+    Return<void> getCameraList_1_1(getCameraList_1_1_cb _hidl_cb)  override;
+    Return<sp<IEvsCamera_1_1>>  openCamera_1_1(const hidl_string& cameraId,
+                                               const Stream& streamCfg) override;
+    Return<bool> isHardware() override { return true; }
+
+    // Implementation details
+    EvsEnumerator();
+
+private:
+    // NOTE:  All members values are static so that all clients operate on the same state
+    //        That is to say, this is effectively a singleton despite the fact that HIDL
+    //        constructs a new instance for each client.
+    struct CameraRecord {
+        CameraDesc_1_1      desc;
+        wp<EvsCamera>       activeInstance;
+
+        CameraRecord(const char *cameraId) : desc() { desc.v1.cameraId = cameraId; }
+    };
+
+    static CameraRecord* findCameraById(const std::string& cameraId);
+
+    static std::list<CameraRecord>   sCameraList;
+
+    // Weak pointer. Object destructs if client dies.
+    static wp<EvsDisplay>            sActiveDisplay;
+
+    static unique_ptr<ConfigManager> sConfigManager;
+};
+
+} // namespace implementation
+} // namespace V1_1
+} // namespace evs
+} // namespace automotive
+} // namespace hardware
+} // namespace android
+
+#endif  // ANDROID_HARDWARE_AUTOMOTIVE_EVS_V1_1_EVSCAMERAENUMERATOR_H
diff --git a/automotive/evs/1.1/default/ServiceNames.h b/automotive/evs/1.1/default/ServiceNames.h
new file mode 100644
index 0000000..84b1697
--- /dev/null
+++ b/automotive/evs/1.1/default/ServiceNames.h
@@ -0,0 +1,17 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+const static char kEnumeratorServiceName[] = "hw/0";
diff --git a/automotive/evs/1.1/default/android.hardware.automotive.evs@1.1-service.rc b/automotive/evs/1.1/default/android.hardware.automotive.evs@1.1-service.rc
new file mode 100644
index 0000000..284b3fd
--- /dev/null
+++ b/automotive/evs/1.1/default/android.hardware.automotive.evs@1.1-service.rc
@@ -0,0 +1,5 @@
+service vendor.evs-hal-mock /vendor/bin/hw/android.hardware.automotive.evs@1.1-service
+    class hal
+    user automotive_evs
+    group automotive_evs
+    disabled
diff --git a/automotive/evs/1.1/default/resources/evs_default_configuration.xml b/automotive/evs/1.1/default/resources/evs_default_configuration.xml
new file mode 100644
index 0000000..a79e7c2
--- /dev/null
+++ b/automotive/evs/1.1/default/resources/evs_default_configuration.xml
@@ -0,0 +1,91 @@
+<?xml version='1.0' encoding='utf-8'?>
+<!-- Copyright (C) 2019 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<!-- Exterior View System Example Configuration
+
+     Android Automotive axes are used to define coordinates.
+     See https://source.android.com/devices/sensors/sensor-types#auto_axes
+
+     Use evs_configuration.dtd with xmllint tool, to validate XML configuration file
+-->
+
+<configuration>
+    <!-- system configuration -->
+    <system>
+        <!-- number of cameras available to EVS -->
+        <num_cameras value='1'/>
+    </system>
+
+    <!-- camera information -->
+    <camera>
+        <!-- camera group starts -->
+        <group id='group1' synchronized='APPROXIMATE'>
+            <caps>
+                <stream id='0' width='640'  height='360'  format='RGBA_8888' framerate='30'/>
+            </caps>
+
+            <!-- list of parameters -->
+            <characteristics>
+                <parameter
+                    name='REQUEST_AVAILABLE_CAPABILITIES'
+                    type='enum'
+                    size='1'
+                    value='LOGICAL_MULTI_CAMERA'
+                />
+                <parameter
+                    name='LOGICAL_MULTI_CAMERA_PHYSICAL_IDS'
+                    type='byte[]'
+                    size='1'
+                    value='/dev/video1'
+                />
+            </characteristics>
+        </group>
+
+        <!-- camera device starts -->
+        <device id='/dev/video1' position='rear'>
+            <caps>
+                <!-- list of supported controls -->
+                <supported_controls>
+                    <control name='BRIGHTNESS' min='0' max='255'/>
+                    <control name='CONTRAST' min='0' max='255'/>
+                </supported_controls>
+
+                <stream id='0' width='640'  height='360'  format='RGBA_8888' framerate='30'/>
+            </caps>
+
+            <!-- list of parameters -->
+            <characteristics>
+                <!-- Camera intrinsic calibration matrix. See
+                     https://developer.android.com/reference/android/hardware/camera2/CameraCharacteristics.html#LENS_INTRINSIC_CALIBRATION
+                -->
+                <parameter
+                    name='LENS_INTRINSIC_CALIBRATION'
+                    type='float'
+                    size='5'
+                    value='0.0,0.0,0.0,0.0,0.0'
+                />
+            </characteristics>
+        </device>
+    </camera>
+    <display>
+        <device id='display0' position='driver'>
+            <caps>
+                <!-- list of supported inpu stream configurations -->
+                <stream id='0' width='1280' height='720' format='RGBA_8888' framerate='30'/>
+            </caps>
+        </device>
+    </display>
+</configuration>
+
diff --git a/automotive/evs/1.1/default/service.cpp b/automotive/evs/1.1/default/service.cpp
new file mode 100644
index 0000000..5135864
--- /dev/null
+++ b/automotive/evs/1.1/default/service.cpp
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "android.hardware.automotive.evs@1.1-service"
+
+#include <unistd.h>
+
+#include <hidl/HidlTransportSupport.h>
+#include <log/log.h>
+#include <utils/Errors.h>
+#include <utils/StrongPointer.h>
+
+#include "ServiceNames.h"
+#include "EvsEnumerator.h"
+#include "EvsDisplay.h"
+
+
+// libhidl:
+using android::hardware::configureRpcThreadpool;
+using android::hardware::joinRpcThreadpool;
+
+// Generated HIDL files
+using android::hardware::automotive::evs::V1_1::IEvsEnumerator;
+using android::hardware::automotive::evs::V1_0::IEvsDisplay;
+
+// The namespace in which all our implementation code lives
+using namespace android::hardware::automotive::evs::V1_1::implementation;
+using namespace android;
+
+
+int main() {
+    ALOGI("EVS Hardware Enumerator service is starting");
+    android::sp<IEvsEnumerator> service = new EvsEnumerator();
+
+    configureRpcThreadpool(1, true /* callerWillJoin */);
+
+    // Register our service -- if somebody is already registered by our name,
+    // they will be killed (their thread pool will throw an exception).
+    status_t status = service->registerAsService(kEnumeratorServiceName);
+    if (status == OK) {
+        ALOGD("%s is ready.", kEnumeratorServiceName);
+        joinRpcThreadpool();
+    } else {
+        ALOGE("Could not register service %s (%d).", kEnumeratorServiceName, status);
+    }
+
+    // In normal operation, we don't expect the thread pool to exit
+    ALOGE("EVS Hardware Enumerator is shutting down");
+    return 1;
+}
diff --git a/automotive/evs/1.1/types.hal b/automotive/evs/1.1/types.hal
new file mode 100644
index 0000000..f88d223
--- /dev/null
+++ b/automotive/evs/1.1/types.hal
@@ -0,0 +1,177 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.evs@1.1;
+
+import @1.0::CameraDesc;
+import @1.0::DisplayDesc;
+import @1.0::DisplayState;
+import @1.0::EvsResult;
+import android.hardware.graphics.common@1.2::HardwareBuffer;
+import android.hardware.camera.device@3.2::CameraMetadata;
+
+/**
+ * Structure describing the basic properties of an EVS camera, extended from its
+ * v1.0 declaration.
+ *
+ * The HAL is responsible for filling out this structure for each
+ * EVS camera in the system.
+ */
+struct CameraDesc {
+    @1.0::CameraDesc v1;
+    /**
+     * Store camera metadata such as lens characteristics.
+     */
+    CameraMetadata metadata;
+};
+
+/**
+ * Structure representing an image buffer through our APIs
+ *
+ * In addition to the handle to the graphics memory, we need to retain
+ * the properties of the buffer for easy reference and reconstruction of
+ * an ANativeWindowBuffer object on the remote side of API calls.
+ * (Not least because OpenGL expect an ANativeWindowBuffer* for us as a
+ * texture via eglCreateImageKHR().
+ */
+struct BufferDesc {
+    /**
+     * HIDL counterpart of `AHardwareBuffer_Desc`.  Please see
+     * hardware/interfaces/graphics/common/1.2/types.hal for more details.
+     */
+    HardwareBuffer buffer;
+    /**
+     * The size of a pixel in the units of bytes
+     */
+    uint32_t pixelSize;
+    /**
+     * Opaque value from driver
+     */
+    uint32_t bufferId;
+    /**
+     * Unique identifier of the physical camera device that produces this buffer.
+     */
+    string deviceId;
+    /**
+     * Time that this buffer is being filled.
+     */
+    int64_t timestamp;
+};
+
+/**
+ * Types of informative streaming events
+ */
+enum EvsEventType : uint32_t {
+    /**
+     * Video stream is started
+     */
+    STREAM_STARTED = 0,
+    /**
+     * Video stream is stopped
+     */
+    STREAM_STOPPED,
+    /**
+     * Video frame is dropped
+     */
+    FRAME_DROPPED,
+    /**
+     * Timeout happens
+     */
+    TIMEOUT,
+    /**
+     * Camera parameter is changed; payload contains a changed parameter ID and
+     * its value
+     */
+    PARAMETER_CHANGED,
+    /**
+     * Master role has become available
+     */
+    MASTER_RELEASED,
+};
+
+/**
+ * Structure that describes informative events occurred during EVS is streaming
+ */
+struct EvsEventDesc {
+    /**
+     * Type of an informative event
+     */
+    EvsEventType aType;
+    /**
+     * Device identifier
+     */
+    string deviceId;
+    /**
+     * Possible additional information
+     */
+    uint32_t[4] payload;
+};
+
+/**
+ * EVS Camera Parameter
+ */
+enum CameraParam : uint32_t {
+    /**
+     * The brightness of image frames
+     */
+    BRIGHTNESS,
+    /**
+     * The contrast of image frames
+     */
+    CONTRAST,
+    /**
+     * Automatic gain/exposure control
+     */
+    AUTOGAIN,
+    /**
+     * Gain control
+     */
+    GAIN,
+    /**
+     * Automatic Whitebalance
+     */
+    AUTO_WHITE_BALANCE,
+    /**
+     * Manual white balance setting as a color temperature in Kelvin.
+     */
+    WHITE_BALANCE_TEMPERATURE,
+    /**
+     * Image sharpness adjustment
+     */
+    SHARPNESS,
+    /**
+     * Auto Exposure Control modes; auto, manual, shutter priority, or
+     * aperture priority.
+     */
+    AUTO_EXPOSURE,
+    /**
+     * Manual exposure time of the camera
+     */
+    ABSOLUTE_EXPOSURE,
+    /**
+     * Set the focal point of the camera to the specified position.  This
+     * parameter may not be effective when auto focus is enabled.
+     */
+    ABSOLUTE_FOCUS,
+    /**
+     * Enables continuous automatic focus adjustments.
+     */
+    AUTO_FOCUS,
+    /**
+     * Specify the objective lens focal length as an absolute value.
+     */
+    ABSOLUTE_ZOOM,
+};
diff --git a/automotive/evs/1.1/vts/functional/Android.bp b/automotive/evs/1.1/vts/functional/Android.bp
new file mode 100644
index 0000000..4753933
--- /dev/null
+++ b/automotive/evs/1.1/vts/functional/Android.bp
@@ -0,0 +1,42 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_test {
+    name: "VtsHalEvsV1_1TargetTest",
+    srcs: [
+        "FrameHandler.cpp",
+        "VtsHalEvsV1_1TargetTest.cpp",
+    ],
+    defaults: ["VtsHalTargetTestDefaults"],
+    shared_libs: [
+        "libui",
+        "libcamera_metadata",
+    ],
+    static_libs: [
+        "android.hardware.automotive.evs@1.0",
+        "android.hardware.automotive.evs@1.1",
+        "android.hardware.automotive.evs@common-default-lib",
+        "android.hardware.graphics.common@1.0",
+        "android.hardware.graphics.common@1.1",
+        "android.hardware.graphics.common@1.2",
+        "android.hardware.camera.device@3.2",
+    ],
+    test_suites: ["general-tests"],
+    cflags: [
+        "-O0",
+        "-g",
+    ],
+}
diff --git a/automotive/evs/1.1/vts/functional/FrameHandler.cpp b/automotive/evs/1.1/vts/functional/FrameHandler.cpp
new file mode 100644
index 0000000..ebf488a
--- /dev/null
+++ b/automotive/evs/1.1/vts/functional/FrameHandler.cpp
@@ -0,0 +1,402 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "VtsHalEvsTest"
+
+#include "FrameHandler.h"
+#include "FormatConvert.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <chrono>
+
+#include <android/log.h>
+#include <cutils/native_handle.h>
+#include <ui/GraphicBuffer.h>
+
+using namespace std::chrono_literals;
+
+FrameHandler::FrameHandler(android::sp <IEvsCamera> pCamera, CameraDesc cameraInfo,
+                           android::sp <IEvsDisplay> pDisplay,
+                           BufferControlFlag mode) :
+    mCamera(pCamera),
+    mCameraInfo(cameraInfo),
+    mDisplay(pDisplay),
+    mReturnMode(mode) {
+    // Nothing but member initialization here...
+}
+
+
+void FrameHandler::shutdown()
+{
+    // Make sure we're not still streaming
+    blockingStopStream();
+
+    // At this point, the receiver thread is no longer running, so we can safely drop
+    // our remote object references so they can be freed
+    mCamera = nullptr;
+    mDisplay = nullptr;
+}
+
+
+bool FrameHandler::startStream() {
+    // Tell the camera to start streaming
+    Return<EvsResult> result = mCamera->startVideoStream(this);
+    if (result != EvsResult::OK) {
+        return false;
+    }
+
+    // Mark ourselves as running
+    mLock.lock();
+    mRunning = true;
+    mLock.unlock();
+
+    return true;
+}
+
+
+void FrameHandler::asyncStopStream() {
+    // Tell the camera to stop streaming.
+    // This will result in a null frame being delivered when the stream actually stops.
+    mCamera->stopVideoStream();
+}
+
+
+void FrameHandler::blockingStopStream() {
+    // Tell the stream to stop
+    asyncStopStream();
+
+    // Wait until the stream has actually stopped
+    std::unique_lock<std::mutex> lock(mEventLock);
+    if (mRunning) {
+        mEventSignal.wait(lock, [this]() { return !mRunning; });
+    }
+}
+
+
+bool FrameHandler::returnHeldBuffer() {
+    std::lock_guard<std::mutex> lock(mLock);
+
+    // Return the oldest buffer we're holding
+    if (mHeldBuffers.empty()) {
+        // No buffers are currently held
+        return false;
+    }
+
+    hidl_vec<BufferDesc_1_1> buffers = mHeldBuffers.front();
+    mHeldBuffers.pop();
+    mCamera->doneWithFrame_1_1(buffers);
+
+    return true;
+}
+
+
+bool FrameHandler::isRunning() {
+    std::lock_guard<std::mutex> lock(mLock);
+    return mRunning;
+}
+
+
+void FrameHandler::waitForFrameCount(unsigned frameCount) {
+    // Wait until we've seen at least the requested number of frames (could be more)
+    std::unique_lock<std::mutex> lock(mLock);
+    mFrameSignal.wait(lock, [this, frameCount](){
+                                return mFramesReceived >= frameCount;
+                            });
+}
+
+
+void FrameHandler::getFramesCounters(unsigned* received, unsigned* displayed) {
+    std::lock_guard<std::mutex> lock(mLock);
+
+    if (received) {
+        *received = mFramesReceived;
+    }
+    if (displayed) {
+        *displayed = mFramesDisplayed;
+    }
+}
+
+
+Return<void> FrameHandler::deliverFrame(const BufferDesc_1_0& bufferArg) {
+    ALOGW("A frame delivered via v1.0 method is rejected.");
+    mCamera->doneWithFrame(bufferArg);
+    return Void();
+}
+
+
+Return<void> FrameHandler::deliverFrame_1_1(const hidl_vec<BufferDesc_1_1>& buffers) {
+    mLock.lock();
+    // For VTS tests, FrameHandler uses a single frame among delivered frames.
+    auto bufferIdx = mFramesDisplayed % buffers.size();
+    auto buffer = buffers[bufferIdx];
+    mLock.unlock();
+
+    const AHardwareBuffer_Desc* pDesc =
+        reinterpret_cast<const AHardwareBuffer_Desc *>(&buffer.buffer.description);
+    ALOGD("Received a frame from the camera (%p)",
+          buffer.buffer.nativeHandle.getNativeHandle());
+
+    // Store a dimension of a received frame.
+    mFrameWidth = pDesc->width;
+    mFrameHeight = pDesc->height;
+
+    // If we were given an opened display at construction time, then send the received
+    // image back down the camera.
+    bool displayed = false;
+    if (mDisplay.get()) {
+        // Get the output buffer we'll use to display the imagery
+        BufferDesc_1_0 tgtBuffer = {};
+        mDisplay->getTargetBuffer([&tgtBuffer](const BufferDesc_1_0& buff) {
+                                      tgtBuffer = buff;
+                                  }
+        );
+
+        if (tgtBuffer.memHandle == nullptr) {
+            printf("Didn't get target buffer - frame lost\n");
+            ALOGE("Didn't get requested output buffer -- skipping this frame.");
+        } else {
+            // Copy the contents of the of buffer.memHandle into tgtBuffer
+            copyBufferContents(tgtBuffer, buffer);
+
+            // Send the target buffer back for display
+            Return<EvsResult> result = mDisplay->returnTargetBufferForDisplay(tgtBuffer);
+            if (!result.isOk()) {
+                printf("HIDL error on display buffer (%s)- frame lost\n",
+                       result.description().c_str());
+                ALOGE("Error making the remote function call.  HIDL said %s",
+                      result.description().c_str());
+            } else if (result != EvsResult::OK) {
+                printf("Display reported error - frame lost\n");
+                ALOGE("We encountered error %d when returning a buffer to the display!",
+                      (EvsResult) result);
+            } else {
+                // Everything looks good!
+                // Keep track so tests or watch dogs can monitor progress
+                displayed = true;
+            }
+        }
+    }
+
+    mLock.lock();
+    // increases counters
+    ++mFramesReceived;
+    mFramesDisplayed += (int)displayed;
+    mLock.unlock();
+    mFrameSignal.notify_all();
+
+    switch (mReturnMode) {
+    case eAutoReturn:
+        // Send the camera buffer back now that the client has seen it
+        ALOGD("Calling doneWithFrame");
+        mCamera->doneWithFrame_1_1(buffers);
+        break;
+    case eNoAutoReturn:
+        // Hang onto the buffer handles for now -- the client will return it explicitly later
+        mHeldBuffers.push(buffers);
+        break;
+    }
+
+    ALOGD("Frame handling complete");
+
+    return Void();
+}
+
+
+Return<void> FrameHandler::notify(const EvsEventDesc& event) {
+    // Local flag we use to keep track of when the stream is stopping
+    std::unique_lock<std::mutex> lock(mEventLock);
+    mLatestEventDesc.aType = event.aType;
+    mLatestEventDesc.payload[0] = event.payload[0];
+    mLatestEventDesc.payload[1] = event.payload[1];
+    if (mLatestEventDesc.aType == EvsEventType::STREAM_STOPPED) {
+        // Signal that the last frame has been received and the stream is stopped
+        mRunning = false;
+    } else if (mLatestEventDesc.aType == EvsEventType::PARAMETER_CHANGED) {
+        ALOGD("Camera parameter 0x%X is changed to 0x%X",
+              mLatestEventDesc.payload[0], mLatestEventDesc.payload[1]);
+    } else {
+        ALOGD("Received an event %s", eventToString(mLatestEventDesc.aType));
+    }
+    lock.unlock();
+    mEventSignal.notify_one();
+
+    return Void();
+}
+
+
+bool FrameHandler::copyBufferContents(const BufferDesc_1_0& tgtBuffer,
+                                      const BufferDesc_1_1& srcBuffer) {
+    bool success = true;
+    const AHardwareBuffer_Desc* pSrcDesc =
+        reinterpret_cast<const AHardwareBuffer_Desc *>(&srcBuffer.buffer.description);
+
+    // Make sure we don't run off the end of either buffer
+    const unsigned width  = std::min(tgtBuffer.width,
+                                     pSrcDesc->width);
+    const unsigned height = std::min(tgtBuffer.height,
+                                     pSrcDesc->height);
+
+    sp<android::GraphicBuffer> tgt = new android::GraphicBuffer(tgtBuffer.memHandle,
+                                                                android::GraphicBuffer::CLONE_HANDLE,
+                                                                tgtBuffer.width,
+                                                                tgtBuffer.height,
+                                                                tgtBuffer.format,
+                                                                1,
+                                                                tgtBuffer.usage,
+                                                                tgtBuffer.stride);
+    sp<android::GraphicBuffer> src = new android::GraphicBuffer(srcBuffer.buffer.nativeHandle,
+                                                                android::GraphicBuffer::CLONE_HANDLE,
+                                                                pSrcDesc->width,
+                                                                pSrcDesc->height,
+                                                                pSrcDesc->format,
+                                                                pSrcDesc->layers,
+                                                                pSrcDesc->usage,
+                                                                pSrcDesc->stride);
+
+    // Lock our source buffer for reading (current expectation are for this to be NV21 format)
+    uint8_t* srcPixels = nullptr;
+    src->lock(GRALLOC_USAGE_SW_READ_OFTEN, (void**)&srcPixels);
+
+    // Lock our target buffer for writing (should be either RGBA8888 or BGRA8888 format)
+    uint32_t* tgtPixels = nullptr;
+    tgt->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, (void**)&tgtPixels);
+
+    if (srcPixels && tgtPixels) {
+        using namespace ::android::hardware::automotive::evs::common;
+        if (tgtBuffer.format == HAL_PIXEL_FORMAT_RGBA_8888) {
+            if (pSrcDesc->format == HAL_PIXEL_FORMAT_YCRCB_420_SP) {   // 420SP == NV21
+                Utils::copyNV21toRGB32(width, height,
+                                       srcPixels,
+                                       tgtPixels, tgtBuffer.stride);
+            } else if (pSrcDesc->format == HAL_PIXEL_FORMAT_YV12) { // YUV_420P == YV12
+                Utils::copyYV12toRGB32(width, height,
+                                       srcPixels,
+                                       tgtPixels, tgtBuffer.stride);
+            } else if (pSrcDesc->format == HAL_PIXEL_FORMAT_YCBCR_422_I) { // YUYV
+                Utils::copyYUYVtoRGB32(width, height,
+                                       srcPixels, pSrcDesc->stride,
+                                       tgtPixels, tgtBuffer.stride);
+            } else if (pSrcDesc->format == tgtBuffer.format) {  // 32bit RGBA
+                Utils::copyMatchedInterleavedFormats(width, height,
+                                                     srcPixels, pSrcDesc->stride,
+                                                     tgtPixels, tgtBuffer.stride,
+                                                     tgtBuffer.pixelSize);
+            } else {
+                ALOGE("Camera buffer format is not supported");
+                success = false;
+            }
+        } else if (tgtBuffer.format == HAL_PIXEL_FORMAT_BGRA_8888) {
+            if (pSrcDesc->format == HAL_PIXEL_FORMAT_YCRCB_420_SP) {   // 420SP == NV21
+                Utils::copyNV21toBGR32(width, height,
+                                       srcPixels,
+                                       tgtPixels, tgtBuffer.stride);
+            } else if (pSrcDesc->format == HAL_PIXEL_FORMAT_YV12) { // YUV_420P == YV12
+                Utils::copyYV12toBGR32(width, height,
+                                       srcPixels,
+                                       tgtPixels, tgtBuffer.stride);
+            } else if (pSrcDesc->format == HAL_PIXEL_FORMAT_YCBCR_422_I) { // YUYV
+                Utils::copyYUYVtoBGR32(width, height,
+                                       srcPixels, pSrcDesc->stride,
+                                       tgtPixels, tgtBuffer.stride);
+            } else if (pSrcDesc->format == tgtBuffer.format) {  // 32bit RGBA
+                Utils::copyMatchedInterleavedFormats(width, height,
+                                                     srcPixels, pSrcDesc->stride,
+                                                     tgtPixels, tgtBuffer.stride,
+                                                     tgtBuffer.pixelSize);
+            } else {
+                ALOGE("Camera buffer format is not supported");
+                success = false;
+            }
+        } else {
+            // We always expect 32 bit RGB for the display output for now.  Is there a need for 565?
+            ALOGE("Diplay buffer is always expected to be 32bit RGBA");
+            success = false;
+        }
+    } else {
+        ALOGE("Failed to lock buffer contents for contents transfer");
+        success = false;
+    }
+
+    if (srcPixels) {
+        src->unlock();
+    }
+    if (tgtPixels) {
+        tgt->unlock();
+    }
+
+    return success;
+}
+
+void FrameHandler::getFrameDimension(unsigned* width, unsigned* height) {
+    if (width) {
+        *width = mFrameWidth;
+    }
+
+    if (height) {
+        *height = mFrameHeight;
+    }
+}
+
+bool FrameHandler::waitForEvent(const EvsEventDesc& aTargetEvent,
+                                      EvsEventDesc& aReceivedEvent,
+                                      bool ignorePayload) {
+    // Wait until we get an expected parameter change event.
+    std::unique_lock<std::mutex> lock(mEventLock);
+    auto now = std::chrono::system_clock::now();
+    bool found = false;
+    while (!found) {
+        bool result = mEventSignal.wait_until(lock, now + 5s,
+            [this, aTargetEvent, ignorePayload, &aReceivedEvent, &found](){
+                found = (mLatestEventDesc.aType == aTargetEvent.aType) &&
+                        (ignorePayload || (mLatestEventDesc.payload[0] == aTargetEvent.payload[0] &&
+                                           mLatestEventDesc.payload[1] == aTargetEvent.payload[1]));
+
+                aReceivedEvent.aType = mLatestEventDesc.aType;
+                aReceivedEvent.payload[0] = mLatestEventDesc.payload[0];
+                aReceivedEvent.payload[1] = mLatestEventDesc.payload[1];
+                return found;
+            }
+        );
+
+        if (!result) {
+            ALOGW("A timer is expired before a target event has happened.");
+            break;
+        }
+    }
+
+    return found;
+}
+
+const char *FrameHandler::eventToString(const EvsEventType aType) {
+    switch (aType) {
+        case EvsEventType::STREAM_STARTED:
+            return "STREAM_STARTED";
+        case EvsEventType::STREAM_STOPPED:
+            return "STREAM_STOPPED";
+        case EvsEventType::FRAME_DROPPED:
+            return "FRAME_DROPPED";
+        case EvsEventType::TIMEOUT:
+            return "TIMEOUT";
+        case EvsEventType::PARAMETER_CHANGED:
+            return "PARAMETER_CHANGED";
+        case EvsEventType::MASTER_RELEASED:
+            return "MASTER_RELEASED";
+        default:
+            return "Unknown";
+    }
+}
+
diff --git a/automotive/evs/1.1/vts/functional/FrameHandler.h b/automotive/evs/1.1/vts/functional/FrameHandler.h
new file mode 100644
index 0000000..21e85fe
--- /dev/null
+++ b/automotive/evs/1.1/vts/functional/FrameHandler.h
@@ -0,0 +1,118 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef EVS_VTS_FRAMEHANDLER_H
+#define EVS_VTS_FRAMEHANDLER_H
+
+#include <queue>
+
+#include <FrameHandler.h>
+
+#include <android/hardware/automotive/evs/1.1/IEvsCameraStream.h>
+#include <android/hardware/automotive/evs/1.1/IEvsCamera.h>
+#include <android/hardware/automotive/evs/1.0/IEvsDisplay.h>
+
+using namespace ::android::hardware::automotive::evs::V1_1;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_handle;
+using ::android::sp;
+using ::android::hardware::automotive::evs::V1_0::IEvsDisplay;
+using ::android::hardware::automotive::evs::V1_0::EvsResult;
+using BufferDesc_1_0 = ::android::hardware::automotive::evs::V1_0::BufferDesc;
+using BufferDesc_1_1 = ::android::hardware::automotive::evs::V1_1::BufferDesc;
+
+
+/*
+ * FrameHandler:
+ * This class can be used to receive camera imagery from an IEvsCamera implementation.  Given an
+ * IEvsDisplay instance at startup, it will forward the received imagery to the display,
+ * providing a trivial implementation of a rear vew camera type application.
+ * Note that the video frames are delivered on a background thread, while the control interface
+ * is actuated from the applications foreground thread.
+ */
+class FrameHandler : public IEvsCameraStream {
+public:
+    enum BufferControlFlag {
+        eAutoReturn,
+        eNoAutoReturn,
+    };
+
+    FrameHandler(android::sp <IEvsCamera> pCamera, CameraDesc cameraInfo,
+                 android::sp <IEvsDisplay> pDisplay = nullptr,
+                 BufferControlFlag mode = eAutoReturn);
+    virtual ~FrameHandler() {
+        if (mCamera != nullptr) {
+            /* shutdown a camera explicitly */
+            shutdown();
+        }
+    }
+
+    void shutdown();
+
+    bool startStream();
+    void asyncStopStream();
+    void blockingStopStream();
+
+    bool returnHeldBuffer();
+
+    bool isRunning();
+
+    void waitForFrameCount(unsigned frameCount);
+    bool waitForEvent(const EvsEventDesc& aTargetEvent,
+                            EvsEventDesc& aReceivedEvent,
+                            bool ignorePayload = false);
+    void getFramesCounters(unsigned* received, unsigned* displayed);
+    void getFrameDimension(unsigned* width, unsigned* height);
+
+private:
+    // Implementation for ::android::hardware::automotive::evs::V1_0::IEvsCameraStream
+    Return<void> deliverFrame(const BufferDesc_1_0& buffer) override;
+
+    // Implementation for ::android::hardware::automotive::evs::V1_1::IEvsCameraStream
+    Return<void> deliverFrame_1_1(const hidl_vec<BufferDesc_1_1>& buffer) override;
+    Return<void> notify(const EvsEventDesc& event) override;
+
+    // Local implementation details
+    bool copyBufferContents(const BufferDesc_1_0& tgtBuffer, const BufferDesc_1_1& srcBuffer);
+    const char *eventToString(const EvsEventType aType);
+
+    // Values initialized as startup
+    android::sp <IEvsCamera>    mCamera;
+    CameraDesc                  mCameraInfo;
+    android::sp <IEvsDisplay>   mDisplay;
+    BufferControlFlag           mReturnMode;
+
+    // Since we get frames delivered to us asynchronously via the IEvsCameraStream interface,
+    // we need to protect all member variables that may be modified while we're streaming
+    // (ie: those below)
+    std::mutex                            mLock;
+    std::mutex                            mEventLock;
+    std::condition_variable               mEventSignal;
+    std::condition_variable               mFrameSignal;
+    std::queue<hidl_vec<BufferDesc_1_1>>  mHeldBuffers;
+
+    bool                        mRunning = false;
+    unsigned                    mFramesReceived = 0;    // Simple counter -- rolls over eventually!
+    unsigned                    mFramesDisplayed = 0;   // Simple counter -- rolls over eventually!
+    unsigned                    mFrameWidth = 0;
+    unsigned                    mFrameHeight = 0;
+    EvsEventDesc                mLatestEventDesc;
+};
+
+
+#endif //EVS_VTS_FRAMEHANDLER_H
diff --git a/automotive/evs/1.1/vts/functional/VtsHalEvsV1_1TargetTest.cpp b/automotive/evs/1.1/vts/functional/VtsHalEvsV1_1TargetTest.cpp
new file mode 100644
index 0000000..1a62245
--- /dev/null
+++ b/automotive/evs/1.1/vts/functional/VtsHalEvsV1_1TargetTest.cpp
@@ -0,0 +1,2194 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "VtsHalEvsTest"
+
+
+// Note:  We have't got a great way to indicate which target
+// should be tested, so we'll leave the interface served by the
+// default (mock) EVS driver here for easy reference.  All
+// actual EVS drivers should serve on the EvsEnumeratorHw name,
+// however, so the code is checked in that way.
+//const static char kEnumeratorName[]  = "EvsEnumeratorHw-Mock";
+const static char kEnumeratorName[]  = "EvsEnumeratorHw";
+
+
+// These values are called out in the EVS design doc (as of Mar 8, 2017)
+static const int kMaxStreamStartMilliseconds = 500;
+static const int kMinimumFramesPerSecond = 10;
+
+static const int kSecondsToMilliseconds = 1000;
+static const int kMillisecondsToMicroseconds = 1000;
+static const float kNanoToMilliseconds = 0.000001f;
+static const float kNanoToSeconds = 0.000000001f;
+
+
+#include "FrameHandler.h"
+
+#include <cstdio>
+#include <cstring>
+#include <cstdlib>
+#include <thread>
+#include <unordered_set>
+
+#include <hidl/HidlTransportSupport.h>
+#include <hwbinder/ProcessState.h>
+#include <log/log.h>
+#include <utils/Errors.h>
+#include <utils/StrongPointer.h>
+
+#include <android/log.h>
+#include <android/hardware/automotive/evs/1.1/IEvsCamera.h>
+#include <android/hardware/automotive/evs/1.1/IEvsCameraStream.h>
+#include <android/hardware/automotive/evs/1.1/IEvsEnumerator.h>
+#include <android/hardware/automotive/evs/1.0/IEvsDisplay.h>
+#include <android/hardware/camera/device/3.2/ICameraDevice.h>
+#include <system/camera_metadata.h>
+
+#include <VtsHalHidlTargetTestBase.h>
+#include <VtsHalHidlTargetTestEnvBase.h>
+
+using namespace ::android::hardware::automotive::evs::V1_1;
+
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_handle;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+using ::android::wp;
+using ::android::hardware::camera::device::V3_2::Stream;
+using ::android::hardware::automotive::evs::V1_0::DisplayDesc;
+using ::android::hardware::automotive::evs::V1_0::DisplayState;
+using ::android::hardware::graphics::common::V1_0::PixelFormat;
+using IEvsCamera_1_0 = ::android::hardware::automotive::evs::V1_0::IEvsCamera;
+using IEvsCamera_1_1 = ::android::hardware::automotive::evs::V1_1::IEvsCamera;
+
+/*
+ * Plese note that this is different from what is defined in
+ * libhardware/modules/camera/3_4/metadata/types.h; this has one additional
+ * field to store a framerate.
+ */
+const size_t kStreamCfgSz = 5;
+typedef struct {
+    int32_t width;
+    int32_t height;
+    int32_t format;
+    int32_t direction;
+    int32_t framerate;
+} RawStreamConfig;
+
+
+// Test environment for Evs HIDL HAL.
+class EvsHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
+   public:
+    // get the test environment singleton
+    static EvsHidlEnvironment* Instance() {
+        static EvsHidlEnvironment* instance = new EvsHidlEnvironment;
+        return instance;
+    }
+
+    virtual void registerTestServices() override { registerTestService<IEvsEnumerator>(); }
+
+   private:
+    EvsHidlEnvironment() {}
+};
+
+// The main test class for EVS
+class EvsHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+public:
+    virtual void SetUp() override {
+        // Make sure we can connect to the enumerator
+        string service_name =
+            EvsHidlEnvironment::Instance()->getServiceName<IEvsEnumerator>(kEnumeratorName);
+        pEnumerator = getService<IEvsEnumerator>(service_name);
+        ASSERT_NE(pEnumerator.get(), nullptr);
+
+        mIsHwModule = pEnumerator->isHardware();
+    }
+
+    virtual void TearDown() override {
+        // Attempt to close any active camera
+        for (auto &&c : activeCameras) {
+            sp<IEvsCamera_1_1> cam = c.promote();
+            if (cam != nullptr) {
+                pEnumerator->closeCamera(cam);
+            }
+        }
+    }
+
+protected:
+    void loadCameraList() {
+        // SetUp() must run first!
+        assert(pEnumerator != nullptr);
+
+        // Get the camera list
+        pEnumerator->getCameraList_1_1(
+            [this](hidl_vec <CameraDesc> cameraList) {
+                ALOGI("Camera list callback received %zu cameras",
+                      cameraList.size());
+                cameraInfo.reserve(cameraList.size());
+                for (auto&& cam: cameraList) {
+                    ALOGI("Found camera %s", cam.v1.cameraId.c_str());
+                    cameraInfo.push_back(cam);
+                }
+            }
+        );
+
+        // We insist on at least one camera for EVS to pass any camera tests
+        ASSERT_GE(cameraInfo.size(), 1u);
+    }
+
+    bool isLogicalCamera(const camera_metadata_t *metadata) {
+        if (metadata == nullptr) {
+            // A logical camera device must have a valid camera metadata.
+            return false;
+        }
+
+        // Looking for LOGICAL_MULTI_CAMERA capability from metadata.
+        camera_metadata_ro_entry_t entry;
+        int rc = find_camera_metadata_ro_entry(metadata,
+                                               ANDROID_REQUEST_AVAILABLE_CAPABILITIES,
+                                               &entry);
+        if (0 != rc) {
+            // No capabilities are found.
+            return false;
+        }
+
+        for (size_t i = 0; i < entry.count; ++i) {
+            uint8_t cap = entry.data.u8[i];
+            if (cap == ANDROID_REQUEST_AVAILABLE_CAPABILITIES_LOGICAL_MULTI_CAMERA) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    std::unordered_set<std::string> getPhysicalCameraIds(const std::string& id,
+                                                         bool& flag) {
+        std::unordered_set<std::string> physicalCameras;
+
+        auto it = cameraInfo.begin();
+        while (it != cameraInfo.end()) {
+            if (it->v1.cameraId == id) {
+                break;
+            }
+            ++it;
+        }
+
+        if (it == cameraInfo.end()) {
+            // Unknown camera is requested.  Return an empty list.
+            return physicalCameras;
+        }
+
+        const camera_metadata_t *metadata =
+            reinterpret_cast<camera_metadata_t *>(&it->metadata[0]);
+        flag = isLogicalCamera(metadata);
+        if (!flag) {
+            // EVS assumes that the device w/o a valid metadata is a physical
+            // device.
+            ALOGI("%s is not a logical camera device.", id.c_str());
+            physicalCameras.emplace(id);
+            return physicalCameras;
+        }
+
+        // Look for physical camera identifiers
+        camera_metadata_ro_entry entry;
+        int rc = find_camera_metadata_ro_entry(metadata,
+                                               ANDROID_LOGICAL_MULTI_CAMERA_PHYSICAL_IDS,
+                                               &entry);
+        ALOGE_IF(rc, "No physical camera ID is found for a logical camera device");
+
+        const uint8_t *ids = entry.data.u8;
+        size_t start = 0;
+        for (size_t i = 0; i < entry.count; ++i) {
+            if (ids[i] == '\0') {
+                if (start != i) {
+                    std::string id(reinterpret_cast<const char *>(ids + start));
+                    physicalCameras.emplace(id);
+                }
+                start = i + 1;
+            }
+        }
+
+        ALOGI("%s consists of %d physical camera devices.", id.c_str(), (int)physicalCameras.size());
+        return physicalCameras;
+    }
+
+
+    sp<IEvsEnumerator>              pEnumerator;   // Every test needs access to the service
+    std::vector<CameraDesc>         cameraInfo;    // Empty unless/until loadCameraList() is called
+    bool                            mIsHwModule;   // boolean to tell current module under testing
+                                                   // is HW module implementation.
+    std::deque<wp<IEvsCamera_1_1>>  activeCameras; // A list of active camera handles that are
+                                                   // needed to be cleaned up.
+};
+
+
+// Test cases, their implementations, and corresponding requirements are
+// documented at go/aae-evs-public-api-test.
+
+/*
+ * CameraOpenClean:
+ * Opens each camera reported by the enumerator and then explicitly closes it via a
+ * call to closeCamera.  Then repeats the test to ensure all cameras can be reopened.
+ */
+TEST_F(EvsHidlTest, CameraOpenClean) {
+    ALOGI("Starting CameraOpenClean test");
+
+    // Get the camera list
+    loadCameraList();
+
+    // Using null stream configuration makes EVS uses the default resolution and
+    // output format.
+    Stream nullCfg = {};
+
+    // Open and close each camera twice
+    for (auto&& cam: cameraInfo) {
+        bool isLogicalCam = false;
+        auto devices = getPhysicalCameraIds(cam.v1.cameraId, isLogicalCam);
+        if (mIsHwModule && isLogicalCam) {
+            ALOGI("Skip a logical device %s for HW module", cam.v1.cameraId.c_str());
+            continue;
+        }
+
+        for (int pass = 0; pass < 2; pass++) {
+            activeCameras.clear();
+            sp<IEvsCamera_1_1> pCam =
+                IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, nullCfg))
+                .withDefault(nullptr);
+            ASSERT_NE(pCam, nullptr);
+
+            for (auto&& devName : devices) {
+                bool matched = false;
+                pCam->getPhysicalCameraInfo(devName,
+                                            [&devName, &matched](const CameraDesc& info) {
+                                                matched = devName == info.v1.cameraId;
+                                            });
+                ASSERT_TRUE(matched);
+            }
+
+            // Store a camera handle for a clean-up
+            activeCameras.push_back(pCam);
+
+            // Verify that this camera self-identifies correctly
+            pCam->getCameraInfo_1_1([&cam](CameraDesc desc) {
+                                        ALOGD("Found camera %s", desc.v1.cameraId.c_str());
+                                        EXPECT_EQ(cam.v1.cameraId, desc.v1.cameraId);
+                                    }
+            );
+
+            // Explicitly close the camera so resources are released right away
+            pEnumerator->closeCamera(pCam);
+        }
+    }
+}
+
+
+/*
+ * CameraOpenAggressive:
+ * Opens each camera reported by the enumerator twice in a row without an intervening closeCamera
+ * call.  This ensures that the intended "aggressive open" behavior works.  This is necessary for
+ * the system to be tolerant of shutdown/restart race conditions.
+ */
+TEST_F(EvsHidlTest, CameraOpenAggressive) {
+    ALOGI("Starting CameraOpenAggressive test");
+
+    // Get the camera list
+    loadCameraList();
+
+    // Using null stream configuration makes EVS uses the default resolution and
+    // output format.
+    Stream nullCfg = {};
+
+    // Open and close each camera twice
+    for (auto&& cam: cameraInfo) {
+        bool isLogicalCam = false;
+        getPhysicalCameraIds(cam.v1.cameraId, isLogicalCam);
+        if (mIsHwModule && isLogicalCam) {
+            ALOGI("Skip a logical device %s for HW module", cam.v1.cameraId.c_str());
+            continue;
+        }
+
+        activeCameras.clear();
+        sp<IEvsCamera_1_1> pCam =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, nullCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCam, nullptr);
+
+        // Store a camera handle for a clean-up
+        activeCameras.push_back(pCam);
+
+        // Verify that this camera self-identifies correctly
+        pCam->getCameraInfo_1_1([&cam](CameraDesc desc) {
+                                    ALOGD("Found camera %s", desc.v1.cameraId.c_str());
+                                    EXPECT_EQ(cam.v1.cameraId, desc.v1.cameraId);
+                                }
+        );
+
+        sp<IEvsCamera_1_1> pCam2 =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, nullCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCam2, nullptr);
+
+        // Store a camera handle for a clean-up
+        activeCameras.push_back(pCam2);
+
+        ASSERT_NE(pCam, pCam2);
+
+        Return<EvsResult> result = pCam->setMaxFramesInFlight(2);
+        if (mIsHwModule) {
+            // Verify that the old camera rejects calls via HW module.
+            EXPECT_EQ(EvsResult::OWNERSHIP_LOST, EvsResult(result));
+        } else {
+            // default implementation supports multiple clients.
+            EXPECT_EQ(EvsResult::OK, EvsResult(result));
+        }
+
+        // Close the superceded camera
+        pEnumerator->closeCamera(pCam);
+
+        // Verify that the second camera instance self-identifies correctly
+        pCam2->getCameraInfo_1_1([&cam](CameraDesc desc) {
+                                     ALOGD("Found camera %s", desc.v1.cameraId.c_str());
+                                     EXPECT_EQ(cam.v1.cameraId, desc.v1.cameraId);
+                                 }
+        );
+
+        // Close the second camera instance
+        pEnumerator->closeCamera(pCam2);
+    }
+
+    // Sleep here to ensure the destructor cleanup has time to run so we don't break follow on tests
+    sleep(1);   // I hate that this is an arbitrary time to wait.  :(  b/36122635
+}
+
+
+/*
+ * CameraStreamPerformance:
+ * Measure and qualify the stream start up time and streaming frame rate of each reported camera
+ */
+TEST_F(EvsHidlTest, CameraStreamPerformance) {
+    ALOGI("Starting CameraStreamPerformance test");
+
+    // Get the camera list
+    loadCameraList();
+
+    // Using null stream configuration makes EVS uses the default resolution and
+    // output format.
+    Stream nullCfg = {};
+
+    // Test each reported camera
+    for (auto&& cam: cameraInfo) {
+        bool isLogicalCam = false;
+        auto devices = getPhysicalCameraIds(cam.v1.cameraId, isLogicalCam);
+        if (mIsHwModule && isLogicalCam) {
+            ALOGI("Skip a logical device %s", cam.v1.cameraId.c_str());
+            continue;
+        }
+
+        activeCameras.clear();
+        sp<IEvsCamera_1_1> pCam =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, nullCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCam, nullptr);
+
+        // Store a camera handle for a clean-up
+        activeCameras.push_back(pCam);
+
+        // Set up a frame receiver object which will fire up its own thread
+        sp<FrameHandler> frameHandler = new FrameHandler(pCam, cam,
+                                                         nullptr,
+                                                         FrameHandler::eAutoReturn);
+
+        // Start the camera's video stream
+        nsecs_t start = systemTime(SYSTEM_TIME_MONOTONIC);
+
+        bool startResult = frameHandler->startStream();
+        ASSERT_TRUE(startResult);
+
+        // Ensure the first frame arrived within the expected time
+        frameHandler->waitForFrameCount(1);
+        nsecs_t firstFrame = systemTime(SYSTEM_TIME_MONOTONIC);
+        nsecs_t timeToFirstFrame = systemTime(SYSTEM_TIME_MONOTONIC) - start;
+
+        // Extra delays are expected when we attempt to start a video stream on
+        // the logical camera device.  The amount of delay is expected the
+        // number of physical camera devices multiplied by
+        // kMaxStreamStartMilliseconds at most.
+        EXPECT_LE(nanoseconds_to_milliseconds(timeToFirstFrame),
+                  kMaxStreamStartMilliseconds * devices.size());
+        printf("%s: Measured time to first frame %0.2f ms\n",
+               cam.v1.cameraId.c_str(), timeToFirstFrame * kNanoToMilliseconds);
+        ALOGI("%s: Measured time to first frame %0.2f ms",
+              cam.v1.cameraId.c_str(), timeToFirstFrame * kNanoToMilliseconds);
+
+        // Check aspect ratio
+        unsigned width = 0, height = 0;
+        frameHandler->getFrameDimension(&width, &height);
+        EXPECT_GE(width, height);
+
+        // Wait a bit, then ensure we get at least the required minimum number of frames
+        sleep(5);
+        nsecs_t end = systemTime(SYSTEM_TIME_MONOTONIC);
+
+        // Even when the camera pointer goes out of scope, the FrameHandler object will
+        // keep the stream alive unless we tell it to shutdown.
+        // Also note that the FrameHandle and the Camera have a mutual circular reference, so
+        // we have to break that cycle in order for either of them to get cleaned up.
+        frameHandler->shutdown();
+
+        unsigned framesReceived = 0;
+        frameHandler->getFramesCounters(&framesReceived, nullptr);
+        framesReceived = framesReceived - 1;    // Back out the first frame we already waited for
+        nsecs_t runTime = end - firstFrame;
+        float framesPerSecond = framesReceived / (runTime * kNanoToSeconds);
+        printf("Measured camera rate %3.2f fps\n", framesPerSecond);
+        ALOGI("Measured camera rate %3.2f fps", framesPerSecond);
+        EXPECT_GE(framesPerSecond, kMinimumFramesPerSecond);
+
+        // Explicitly release the camera
+        pEnumerator->closeCamera(pCam);
+    }
+}
+
+
+/*
+ * CameraStreamBuffering:
+ * Ensure the camera implementation behaves properly when the client holds onto buffers for more
+ * than one frame time.  The camera must cleanly skip frames until the client is ready again.
+ */
+TEST_F(EvsHidlTest, CameraStreamBuffering) {
+    ALOGI("Starting CameraStreamBuffering test");
+
+    // Arbitrary constant (should be > 1 and less than crazy)
+    static const unsigned int kBuffersToHold = 6;
+
+    // Get the camera list
+    loadCameraList();
+
+    // Using null stream configuration makes EVS uses the default resolution and
+    // output format.
+    Stream nullCfg = {};
+
+    // Test each reported camera
+    for (auto&& cam: cameraInfo) {
+        bool isLogicalCam = false;
+        getPhysicalCameraIds(cam.v1.cameraId, isLogicalCam);
+        if (mIsHwModule && isLogicalCam) {
+            ALOGI("Skip a logical device %s for HW module", cam.v1.cameraId.c_str());
+            continue;
+        }
+
+        activeCameras.clear();
+        sp<IEvsCamera_1_1> pCam =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, nullCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCam, nullptr);
+
+        // Store a camera handle for a clean-up
+        activeCameras.push_back(pCam);
+
+        // Ask for a crazy number of buffers in flight to ensure it errors correctly
+        Return<EvsResult> badResult = pCam->setMaxFramesInFlight(0xFFFFFFFF);
+        EXPECT_EQ(EvsResult::BUFFER_NOT_AVAILABLE, badResult);
+
+        // Now ask for exactly two buffers in flight as we'll test behavior in that case
+        Return<EvsResult> goodResult = pCam->setMaxFramesInFlight(kBuffersToHold);
+        EXPECT_EQ(EvsResult::OK, goodResult);
+
+
+        // Set up a frame receiver object which will fire up its own thread.
+        sp<FrameHandler> frameHandler = new FrameHandler(pCam, cam,
+                                                         nullptr,
+                                                         FrameHandler::eNoAutoReturn);
+
+        // Start the camera's video stream
+        bool startResult = frameHandler->startStream();
+        ASSERT_TRUE(startResult);
+
+        // Check that the video stream stalls once we've gotten exactly the number of buffers
+        // we requested since we told the frameHandler not to return them.
+        sleep(1);   // 1 second should be enough for at least 5 frames to be delivered worst case
+        unsigned framesReceived = 0;
+        frameHandler->getFramesCounters(&framesReceived, nullptr);
+        ASSERT_EQ(kBuffersToHold, framesReceived) << "Stream didn't stall at expected buffer limit";
+
+
+        // Give back one buffer
+        bool didReturnBuffer = frameHandler->returnHeldBuffer();
+        EXPECT_TRUE(didReturnBuffer);
+
+        // Once we return a buffer, it shouldn't take more than 1/10 second to get a new one
+        // filled since we require 10fps minimum -- but give a 10% allowance just in case.
+        usleep(110 * kMillisecondsToMicroseconds);
+        frameHandler->getFramesCounters(&framesReceived, nullptr);
+        EXPECT_EQ(kBuffersToHold+1, framesReceived) << "Stream should've resumed";
+
+        // Even when the camera pointer goes out of scope, the FrameHandler object will
+        // keep the stream alive unless we tell it to shutdown.
+        // Also note that the FrameHandle and the Camera have a mutual circular reference, so
+        // we have to break that cycle in order for either of them to get cleaned up.
+        frameHandler->shutdown();
+
+        // Explicitly release the camera
+        pEnumerator->closeCamera(pCam);
+    }
+}
+
+
+/*
+ * CameraToDisplayRoundTrip:
+ * End to end test of data flowing from the camera to the display.  Each delivered frame of camera
+ * imagery is simply copied to the display buffer and presented on screen.  This is the one test
+ * which a human could observe to see the operation of the system on the physical display.
+ */
+TEST_F(EvsHidlTest, CameraToDisplayRoundTrip) {
+    ALOGI("Starting CameraToDisplayRoundTrip test");
+
+    // Get the camera list
+    loadCameraList();
+
+    // Using null stream configuration makes EVS uses the default resolution and
+    // output format.
+    Stream nullCfg = {};
+
+    // Request exclusive access to the EVS display
+    sp<IEvsDisplay> pDisplay = pEnumerator->openDisplay();
+    ASSERT_NE(pDisplay, nullptr);
+
+    // Test each reported camera
+    for (auto&& cam: cameraInfo) {
+        bool isLogicalCam = false;
+        getPhysicalCameraIds(cam.v1.cameraId, isLogicalCam);
+        if (mIsHwModule && isLogicalCam) {
+            ALOGI("Skip a logical device %s for HW module", cam.v1.cameraId.c_str());
+            continue;
+        }
+
+        activeCameras.clear();
+        sp<IEvsCamera_1_1> pCam =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, nullCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCam, nullptr);
+
+        // Store a camera handle for a clean-up
+        activeCameras.push_back(pCam);
+
+        // Set up a frame receiver object which will fire up its own thread.
+        sp<FrameHandler> frameHandler = new FrameHandler(pCam, cam,
+                                                         pDisplay,
+                                                         FrameHandler::eAutoReturn);
+
+
+        // Activate the display
+        pDisplay->setDisplayState(DisplayState::VISIBLE_ON_NEXT_FRAME);
+
+        // Start the camera's video stream
+        bool startResult = frameHandler->startStream();
+        ASSERT_TRUE(startResult);
+
+        // Wait a while to let the data flow
+        static const int kSecondsToWait = 5;
+        const int streamTimeMs = kSecondsToWait * kSecondsToMilliseconds -
+                                 kMaxStreamStartMilliseconds;
+        const unsigned minimumFramesExpected = streamTimeMs * kMinimumFramesPerSecond /
+                                               kSecondsToMilliseconds;
+        sleep(kSecondsToWait);
+        unsigned framesReceived = 0;
+        unsigned framesDisplayed = 0;
+        frameHandler->getFramesCounters(&framesReceived, &framesDisplayed);
+        EXPECT_EQ(framesReceived, framesDisplayed);
+        EXPECT_GE(framesDisplayed, minimumFramesExpected);
+
+        // Turn off the display (yes, before the stream stops -- it should be handled)
+        pDisplay->setDisplayState(DisplayState::NOT_VISIBLE);
+
+        // Shut down the streamer
+        frameHandler->shutdown();
+
+        // Explicitly release the camera
+        pEnumerator->closeCamera(pCam);
+    }
+
+    // Explicitly release the display
+    pEnumerator->closeDisplay(pDisplay);
+}
+
+
+/*
+ * MultiCameraStream:
+ * Verify that each client can start and stop video streams on the same
+ * underlying camera.
+ */
+TEST_F(EvsHidlTest, MultiCameraStream) {
+    ALOGI("Starting MultiCameraStream test");
+
+    if (mIsHwModule) {
+        // This test is not for HW module implementation.
+        return;
+    }
+
+    // Get the camera list
+    loadCameraList();
+
+    // Using null stream configuration makes EVS uses the default resolution and
+    // output format.
+    Stream nullCfg = {};
+
+    // Test each reported camera
+    for (auto&& cam: cameraInfo) {
+        activeCameras.clear();
+        // Create two camera clients.
+        sp<IEvsCamera_1_1> pCam0 =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, nullCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCam0, nullptr);
+
+        // Store a camera handle for a clean-up
+        activeCameras.push_back(pCam0);
+
+        sp<IEvsCamera_1_1> pCam1 =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, nullCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCam1, nullptr);
+
+        // Store a camera handle for a clean-up
+        activeCameras.push_back(pCam1);
+
+        // Set up per-client frame receiver objects which will fire up its own thread
+        sp<FrameHandler> frameHandler0 = new FrameHandler(pCam0, cam,
+                                                          nullptr,
+                                                          FrameHandler::eAutoReturn);
+        ASSERT_NE(frameHandler0, nullptr);
+
+        sp<FrameHandler> frameHandler1 = new FrameHandler(pCam1, cam,
+                                                          nullptr,
+                                                          FrameHandler::eAutoReturn);
+        ASSERT_NE(frameHandler1, nullptr);
+
+        // Start the camera's video stream via client 0
+        bool startResult = false;
+        startResult = frameHandler0->startStream() &&
+                      frameHandler1->startStream();
+        ASSERT_TRUE(startResult);
+
+        // Ensure the stream starts
+        frameHandler0->waitForFrameCount(1);
+        frameHandler1->waitForFrameCount(1);
+
+        nsecs_t firstFrame = systemTime(SYSTEM_TIME_MONOTONIC);
+
+        // Wait a bit, then ensure both clients get at least the required minimum number of frames
+        sleep(5);
+        nsecs_t end = systemTime(SYSTEM_TIME_MONOTONIC);
+        unsigned framesReceived0 = 0, framesReceived1 = 0;
+        frameHandler0->getFramesCounters(&framesReceived0, nullptr);
+        frameHandler1->getFramesCounters(&framesReceived1, nullptr);
+        framesReceived0 = framesReceived0 - 1;    // Back out the first frame we already waited for
+        framesReceived1 = framesReceived1 - 1;    // Back out the first frame we already waited for
+        nsecs_t runTime = end - firstFrame;
+        float framesPerSecond0 = framesReceived0 / (runTime * kNanoToSeconds);
+        float framesPerSecond1 = framesReceived1 / (runTime * kNanoToSeconds);
+        ALOGI("Measured camera rate %3.2f fps and %3.2f fps", framesPerSecond0, framesPerSecond1);
+        EXPECT_GE(framesPerSecond0, kMinimumFramesPerSecond);
+        EXPECT_GE(framesPerSecond1, kMinimumFramesPerSecond);
+
+        // Shutdown one client
+        frameHandler0->shutdown();
+
+        // Read frame counters again
+        frameHandler0->getFramesCounters(&framesReceived0, nullptr);
+        frameHandler1->getFramesCounters(&framesReceived1, nullptr);
+
+        // Wait a bit again
+        sleep(5);
+        unsigned framesReceivedAfterStop0 = 0, framesReceivedAfterStop1 = 0;
+        frameHandler0->getFramesCounters(&framesReceivedAfterStop0, nullptr);
+        frameHandler1->getFramesCounters(&framesReceivedAfterStop1, nullptr);
+        EXPECT_EQ(framesReceived0, framesReceivedAfterStop0);
+        EXPECT_LT(framesReceived1, framesReceivedAfterStop1);
+
+        // Shutdown another
+        frameHandler1->shutdown();
+
+        // Explicitly release the camera
+        pEnumerator->closeCamera(pCam0);
+        pEnumerator->closeCamera(pCam1);
+
+        // TODO(b/145459970, b/145457727): below sleep() is added to ensure the
+        // destruction of active camera objects; this may be related with two
+        // issues.
+        sleep(1);
+    }
+}
+
+
+/*
+ * CameraParameter:
+ * Verify that a client can adjust a camera parameter.
+ */
+TEST_F(EvsHidlTest, CameraParameter) {
+    ALOGI("Starting CameraParameter test");
+
+    // Get the camera list
+    loadCameraList();
+
+    // Using null stream configuration makes EVS uses the default resolution and
+    // output format.
+    Stream nullCfg = {};
+
+    // Test each reported camera
+    Return<EvsResult> result = EvsResult::OK;
+    for (auto&& cam: cameraInfo) {
+        bool isLogicalCam = false;
+        getPhysicalCameraIds(cam.v1.cameraId, isLogicalCam);
+        if (isLogicalCam) {
+            // TODO(b/145465724): Support camera parameter programming on
+            // logical devices.
+            ALOGI("Skip a logical device %s", cam.v1.cameraId.c_str());
+            continue;
+        }
+
+        activeCameras.clear();
+        // Create a camera client
+        sp<IEvsCamera_1_1> pCam =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, nullCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCam, nullptr);
+
+        // Store a camera
+        activeCameras.push_back(pCam);
+
+        // Get the parameter list
+        std::vector<CameraParam> cmds;
+        pCam->getParameterList([&cmds](hidl_vec<CameraParam> cmdList) {
+                cmds.reserve(cmdList.size());
+                for (auto &&cmd : cmdList) {
+                    cmds.push_back(cmd);
+                }
+            }
+        );
+
+        if (cmds.size() < 1) {
+            continue;
+        }
+
+        // Set up per-client frame receiver objects which will fire up its own thread
+        sp<FrameHandler> frameHandler = new FrameHandler(pCam, cam,
+                                                         nullptr,
+                                                         FrameHandler::eAutoReturn);
+        ASSERT_NE(frameHandler, nullptr);
+
+        // Start the camera's video stream
+        bool startResult = frameHandler->startStream();
+        ASSERT_TRUE(startResult);
+
+        // Ensure the stream starts
+        frameHandler->waitForFrameCount(1);
+
+        result = pCam->setMaster();
+        ASSERT_EQ(EvsResult::OK, result);
+
+        for (auto &cmd : cmds) {
+            // Get a valid parameter value range
+            int32_t minVal, maxVal, step;
+            pCam->getIntParameterRange(
+                cmd,
+                [&minVal, &maxVal, &step](int32_t val0, int32_t val1, int32_t val2) {
+                    minVal = val0;
+                    maxVal = val1;
+                    step   = val2;
+                }
+            );
+
+            EvsResult result = EvsResult::OK;
+            if (cmd == CameraParam::ABSOLUTE_FOCUS) {
+                // Try to turn off auto-focus
+                std::vector<int32_t> values;
+                pCam->setIntParameter(CameraParam::AUTO_FOCUS, 0,
+                                   [&result, &values](auto status, auto effectiveValues) {
+                                       result = status;
+                                       if (status == EvsResult::OK) {
+                                          for (auto &&v : effectiveValues) {
+                                              values.push_back(v);
+                                          }
+                                       }
+                                   });
+                ASSERT_EQ(EvsResult::OK, result);
+                for (auto &&v : values) {
+                    ASSERT_EQ(v, 0);
+                }
+            }
+
+            // Try to program a parameter with a random value [minVal, maxVal]
+            int32_t val0 = minVal + (std::rand() % (maxVal - minVal));
+            std::vector<int32_t> values;
+
+            // Rounding down
+            val0 = val0 - (val0 % step);
+            pCam->setIntParameter(cmd, val0,
+                               [&result, &values](auto status, auto effectiveValues) {
+                                   result = status;
+                                   if (status == EvsResult::OK) {
+                                      for (auto &&v : effectiveValues) {
+                                          values.push_back(v);
+                                      }
+                                   }
+                               });
+
+            ASSERT_EQ(EvsResult::OK, result);
+
+            values.clear();
+            pCam->getIntParameter(cmd,
+                               [&result, &values](auto status, auto readValues) {
+                                   result = status;
+                                   if (status == EvsResult::OK) {
+                                      for (auto &&v : readValues) {
+                                          values.push_back(v);
+                                      }
+                                   }
+                               });
+            ASSERT_EQ(EvsResult::OK, result);
+            for (auto &&v : values) {
+                ASSERT_EQ(val0, v) << "Values are not matched.";
+            }
+        }
+
+        result = pCam->unsetMaster();
+        ASSERT_EQ(EvsResult::OK, result);
+
+        // Shutdown
+        frameHandler->shutdown();
+
+        // Explicitly release the camera
+        pEnumerator->closeCamera(pCam);
+    }
+}
+
+
+/*
+ * CameraMasterRelease
+ * Verify that non-master client gets notified when the master client either
+ * terminates or releases a role.
+ */
+TEST_F(EvsHidlTest, CameraMasterRelease) {
+    ALOGI("Starting CameraMasterRelease test");
+
+    if (mIsHwModule) {
+        // This test is not for HW module implementation.
+        return;
+    }
+
+    // Get the camera list
+    loadCameraList();
+
+    // Using null stream configuration makes EVS uses the default resolution and
+    // output format.
+    Stream nullCfg = {};
+
+    // Test each reported camera
+    for (auto&& cam: cameraInfo) {
+        bool isLogicalCam = false;
+        getPhysicalCameraIds(cam.v1.cameraId, isLogicalCam);
+        if (isLogicalCam) {
+            // TODO(b/145465724): Support camera parameter programming on
+            // logical devices.
+            ALOGI("Skip a logical device %s", cam.v1.cameraId.c_str());
+            continue;
+        }
+
+        activeCameras.clear();
+        // Create two camera clients.
+        sp<IEvsCamera_1_1> pCamMaster =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, nullCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCamMaster, nullptr);
+
+        // Store a camera handle for a clean-up
+        activeCameras.push_back(pCamMaster);
+
+        sp<IEvsCamera_1_1> pCamNonMaster =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, nullCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCamNonMaster, nullptr);
+
+        // Store a camera handle for a clean-up
+        activeCameras.push_back(pCamNonMaster);
+
+        // Set up per-client frame receiver objects which will fire up its own thread
+        sp<FrameHandler> frameHandlerMaster =
+            new FrameHandler(pCamMaster, cam,
+                             nullptr,
+                             FrameHandler::eAutoReturn);
+        ASSERT_NE(frameHandlerMaster, nullptr);
+        sp<FrameHandler> frameHandlerNonMaster =
+            new FrameHandler(pCamNonMaster, cam,
+                             nullptr,
+                             FrameHandler::eAutoReturn);
+        ASSERT_NE(frameHandlerNonMaster, nullptr);
+
+        // Set one client as the master
+        EvsResult result = pCamMaster->setMaster();
+        ASSERT_TRUE(result == EvsResult::OK);
+
+        // Try to set another client as the master.
+        result = pCamNonMaster->setMaster();
+        ASSERT_TRUE(result == EvsResult::OWNERSHIP_LOST);
+
+        // Start the camera's video stream via a master client.
+        bool startResult = frameHandlerMaster->startStream();
+        ASSERT_TRUE(startResult);
+
+        // Ensure the stream starts
+        frameHandlerMaster->waitForFrameCount(1);
+
+        // Start the camera's video stream via another client
+        startResult = frameHandlerNonMaster->startStream();
+        ASSERT_TRUE(startResult);
+
+        // Ensure the stream starts
+        frameHandlerNonMaster->waitForFrameCount(1);
+
+        // Non-master client expects to receive a master role relesed
+        // notification.
+        EvsEventDesc aTargetEvent  = {};
+        EvsEventDesc aNotification = {};
+
+        bool listening = false;
+        std::mutex eventLock;
+        std::condition_variable eventCond;
+        std::thread listener = std::thread(
+            [&aNotification, &frameHandlerNonMaster, &listening, &eventCond]() {
+                // Notify that a listening thread is running.
+                listening = true;
+                eventCond.notify_all();
+
+                EvsEventDesc aTargetEvent;
+                aTargetEvent.aType = EvsEventType::MASTER_RELEASED;
+                if (!frameHandlerNonMaster->waitForEvent(aTargetEvent, aNotification, true)) {
+                    ALOGW("A timer is expired before a target event is fired.");
+                }
+
+            }
+        );
+
+        // Wait until a listening thread starts.
+        std::unique_lock<std::mutex> lock(eventLock);
+        auto timer = std::chrono::system_clock::now();
+        while (!listening) {
+            timer += 1s;
+            eventCond.wait_until(lock, timer);
+        }
+        lock.unlock();
+
+        // Release a master role.
+        pCamMaster->unsetMaster();
+
+        // Join a listening thread.
+        if (listener.joinable()) {
+            listener.join();
+        }
+
+        // Verify change notifications.
+        ASSERT_EQ(EvsEventType::MASTER_RELEASED,
+                  static_cast<EvsEventType>(aNotification.aType));
+
+        // Non-master becomes a master.
+        result = pCamNonMaster->setMaster();
+        ASSERT_TRUE(result == EvsResult::OK);
+
+        // Previous master client fails to become a master.
+        result = pCamMaster->setMaster();
+        ASSERT_TRUE(result == EvsResult::OWNERSHIP_LOST);
+
+        listening = false;
+        listener = std::thread(
+            [&aNotification, &frameHandlerMaster, &listening, &eventCond]() {
+                // Notify that a listening thread is running.
+                listening = true;
+                eventCond.notify_all();
+
+                EvsEventDesc aTargetEvent;
+                aTargetEvent.aType = EvsEventType::MASTER_RELEASED;
+                if (!frameHandlerMaster->waitForEvent(aTargetEvent, aNotification, true)) {
+                    ALOGW("A timer is expired before a target event is fired.");
+                }
+
+            }
+        );
+
+        // Wait until a listening thread starts.
+        timer = std::chrono::system_clock::now();
+        lock.lock();
+        while (!listening) {
+            eventCond.wait_until(lock, timer + 1s);
+        }
+        lock.unlock();
+
+        // Closing current master client.
+        frameHandlerNonMaster->shutdown();
+
+        // Join a listening thread.
+        if (listener.joinable()) {
+            listener.join();
+        }
+
+        // Verify change notifications.
+        ASSERT_EQ(EvsEventType::MASTER_RELEASED,
+                  static_cast<EvsEventType>(aNotification.aType));
+
+        // Closing streams.
+        frameHandlerMaster->shutdown();
+
+        // Explicitly release the camera
+        pEnumerator->closeCamera(pCamMaster);
+        pEnumerator->closeCamera(pCamNonMaster);
+    }
+}
+
+
+/*
+ * MultiCameraParameter:
+ * Verify that master and non-master clients behave as expected when they try to adjust
+ * camera parameters.
+ */
+TEST_F(EvsHidlTest, MultiCameraParameter) {
+    ALOGI("Starting MultiCameraParameter test");
+
+    if (mIsHwModule) {
+        // This test is not for HW module implementation.
+        return;
+    }
+
+    // Get the camera list
+    loadCameraList();
+
+    // Using null stream configuration makes EVS uses the default resolution and
+    // output format.
+    Stream nullCfg = {};
+
+    // Test each reported camera
+    for (auto&& cam: cameraInfo) {
+        bool isLogicalCam = false;
+        getPhysicalCameraIds(cam.v1.cameraId, isLogicalCam);
+        if (isLogicalCam) {
+            // TODO(b/145465724): Support camera parameter programming on
+            // logical devices.
+            ALOGI("Skip a logical device %s", cam.v1.cameraId.c_str());
+            continue;
+        }
+
+        activeCameras.clear();
+        // Create two camera clients.
+        sp<IEvsCamera_1_1> pCamMaster =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, nullCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCamMaster, nullptr);
+
+        // Store a camera handle for a clean-up
+        activeCameras.push_back(pCamMaster);
+
+        sp<IEvsCamera_1_1> pCamNonMaster =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, nullCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCamNonMaster, nullptr);
+
+        // Store a camera handle for a clean-up
+        activeCameras.push_back(pCamNonMaster);
+
+        // Get the parameter list
+        std::vector<CameraParam> camMasterCmds, camNonMasterCmds;
+        pCamMaster->getParameterList([&camMasterCmds](hidl_vec<CameraParam> cmdList) {
+                camMasterCmds.reserve(cmdList.size());
+                for (auto &&cmd : cmdList) {
+                    camMasterCmds.push_back(cmd);
+                }
+            }
+        );
+
+        pCamNonMaster->getParameterList([&camNonMasterCmds](hidl_vec<CameraParam> cmdList) {
+                camNonMasterCmds.reserve(cmdList.size());
+                for (auto &&cmd : cmdList) {
+                    camNonMasterCmds.push_back(cmd);
+                }
+            }
+        );
+
+        if (camMasterCmds.size() < 1 ||
+            camNonMasterCmds.size() < 1) {
+            // Skip a camera device if it does not support any parameter.
+            continue;
+        }
+
+        // Set up per-client frame receiver objects which will fire up its own thread
+        sp<FrameHandler> frameHandlerMaster =
+            new FrameHandler(pCamMaster, cam,
+                             nullptr,
+                             FrameHandler::eAutoReturn);
+        ASSERT_NE(frameHandlerMaster, nullptr);
+        sp<FrameHandler> frameHandlerNonMaster =
+            new FrameHandler(pCamNonMaster, cam,
+                             nullptr,
+                             FrameHandler::eAutoReturn);
+        ASSERT_NE(frameHandlerNonMaster, nullptr);
+
+        // Set one client as the master
+        EvsResult result = pCamMaster->setMaster();
+        ASSERT_EQ(EvsResult::OK, result);
+
+        // Try to set another client as the master.
+        result = pCamNonMaster->setMaster();
+        ASSERT_EQ(EvsResult::OWNERSHIP_LOST, result);
+
+        // Start the camera's video stream via a master client.
+        bool startResult = frameHandlerMaster->startStream();
+        ASSERT_TRUE(startResult);
+
+        // Ensure the stream starts
+        frameHandlerMaster->waitForFrameCount(1);
+
+        // Start the camera's video stream via another client
+        startResult = frameHandlerNonMaster->startStream();
+        ASSERT_TRUE(startResult);
+
+        // Ensure the stream starts
+        frameHandlerNonMaster->waitForFrameCount(1);
+
+        int32_t val0 = 0;
+        std::vector<int32_t> values;
+        EvsEventDesc aNotification0 = {};
+        EvsEventDesc aNotification1 = {};
+        for (auto &cmd : camMasterCmds) {
+            // Get a valid parameter value range
+            int32_t minVal, maxVal, step;
+            pCamMaster->getIntParameterRange(
+                cmd,
+                [&minVal, &maxVal, &step](int32_t val0, int32_t val1, int32_t val2) {
+                    minVal = val0;
+                    maxVal = val1;
+                    step   = val2;
+                }
+            );
+
+            EvsResult result = EvsResult::OK;
+            if (cmd == CameraParam::ABSOLUTE_FOCUS) {
+                // Try to turn off auto-focus
+                values.clear();
+                pCamMaster->setIntParameter(CameraParam::AUTO_FOCUS, 0,
+                                   [&result, &values](auto status, auto effectiveValues) {
+                                       result = status;
+                                       if (status == EvsResult::OK) {
+                                          for (auto &&v : effectiveValues) {
+                                              values.push_back(v);
+                                          }
+                                       }
+                                   });
+                ASSERT_EQ(EvsResult::OK, result);
+                for (auto &&v : values) {
+                    ASSERT_EQ(v, 0);
+                }
+            }
+
+            // Calculate a parameter value to program.
+            val0 = minVal + (std::rand() % (maxVal - minVal));
+            val0 = val0 - (val0 % step);
+
+            // Prepare and start event listeners.
+            bool listening0 = false;
+            bool listening1 = false;
+            std::condition_variable eventCond;
+            std::thread listener0 = std::thread(
+                [cmd, val0,
+                 &aNotification0, &frameHandlerMaster, &listening0, &listening1, &eventCond]() {
+                    listening0 = true;
+                    if (listening1) {
+                        eventCond.notify_all();
+                    }
+
+                    EvsEventDesc aTargetEvent;
+                    aTargetEvent.aType = EvsEventType::PARAMETER_CHANGED;
+                    aTargetEvent.payload[0] = static_cast<uint32_t>(cmd);
+                    aTargetEvent.payload[1] = val0;
+                    if (!frameHandlerMaster->waitForEvent(aTargetEvent, aNotification0)) {
+                        ALOGW("A timer is expired before a target event is fired.");
+                    }
+                }
+            );
+            std::thread listener1 = std::thread(
+                [cmd, val0,
+                 &aNotification1, &frameHandlerNonMaster, &listening0, &listening1, &eventCond]() {
+                    listening1 = true;
+                    if (listening0) {
+                        eventCond.notify_all();
+                    }
+
+                    EvsEventDesc aTargetEvent;
+                    aTargetEvent.aType = EvsEventType::PARAMETER_CHANGED;
+                    aTargetEvent.payload[0] = static_cast<uint32_t>(cmd);
+                    aTargetEvent.payload[1] = val0;
+                    if (!frameHandlerNonMaster->waitForEvent(aTargetEvent, aNotification1)) {
+                        ALOGW("A timer is expired before a target event is fired.");
+                    }
+                }
+            );
+
+            // Wait until a listening thread starts.
+            std::mutex eventLock;
+            std::unique_lock<std::mutex> lock(eventLock);
+            auto timer = std::chrono::system_clock::now();
+            while (!listening0 || !listening1) {
+                eventCond.wait_until(lock, timer + 1s);
+            }
+            lock.unlock();
+
+            // Try to program a parameter
+            values.clear();
+            pCamMaster->setIntParameter(cmd, val0,
+                                     [&result, &values](auto status, auto effectiveValues) {
+                                         result = status;
+                                         if (status == EvsResult::OK) {
+                                            for (auto &&v : effectiveValues) {
+                                                values.push_back(v);
+                                            }
+                                         }
+                                     });
+
+            ASSERT_EQ(EvsResult::OK, result);
+            for (auto &&v : values) {
+                ASSERT_EQ(val0, v) << "Values are not matched.";
+            }
+
+            // Join a listening thread.
+            if (listener0.joinable()) {
+                listener0.join();
+            }
+            if (listener1.joinable()) {
+                listener1.join();
+            }
+
+            // Verify a change notification
+            ASSERT_EQ(EvsEventType::PARAMETER_CHANGED,
+                      static_cast<EvsEventType>(aNotification0.aType));
+            ASSERT_EQ(EvsEventType::PARAMETER_CHANGED,
+                      static_cast<EvsEventType>(aNotification1.aType));
+            ASSERT_EQ(cmd,
+                      static_cast<CameraParam>(aNotification0.payload[0]));
+            ASSERT_EQ(cmd,
+                      static_cast<CameraParam>(aNotification1.payload[0]));
+            for (auto &&v : values) {
+                ASSERT_EQ(v,
+                          static_cast<int32_t>(aNotification0.payload[1]));
+                ASSERT_EQ(v,
+                          static_cast<int32_t>(aNotification1.payload[1]));
+            }
+
+            // Clients expects to receive a parameter change notification
+            // whenever a master client adjusts it.
+            values.clear();
+            pCamMaster->getIntParameter(cmd,
+                                     [&result, &values](auto status, auto readValues) {
+                                         result = status;
+                                         if (status == EvsResult::OK) {
+                                            for (auto &&v : readValues) {
+                                                values.push_back(v);
+                                            }
+                                         }
+                                     });
+            ASSERT_EQ(EvsResult::OK, result);
+            for (auto &&v : values) {
+                ASSERT_EQ(val0, v) << "Values are not matched.";
+            }
+        }
+
+        // Try to adjust a parameter via non-master client
+        values.clear();
+        pCamNonMaster->setIntParameter(camNonMasterCmds[0], val0,
+                                    [&result, &values](auto status, auto effectiveValues) {
+                                        result = status;
+                                        if (status == EvsResult::OK) {
+                                            for (auto &&v : effectiveValues) {
+                                                values.push_back(v);
+                                            }
+                                        }
+                                    });
+        ASSERT_EQ(EvsResult::INVALID_ARG, result);
+
+        // Non-master client attemps to be a master
+        result = pCamNonMaster->setMaster();
+        ASSERT_EQ(EvsResult::OWNERSHIP_LOST, result);
+
+        // Master client retires from a master role
+        bool listening = false;
+        std::condition_variable eventCond;
+        std::thread listener = std::thread(
+            [&aNotification0, &frameHandlerNonMaster, &listening, &eventCond]() {
+                listening = true;
+                eventCond.notify_all();
+
+                EvsEventDesc aTargetEvent;
+                aTargetEvent.aType = EvsEventType::MASTER_RELEASED;
+                if (!frameHandlerNonMaster->waitForEvent(aTargetEvent, aNotification0, true)) {
+                    ALOGW("A timer is expired before a target event is fired.");
+                }
+            }
+        );
+
+        std::mutex eventLock;
+        auto timer = std::chrono::system_clock::now();
+        unique_lock<std::mutex> lock(eventLock);
+        while (!listening) {
+            eventCond.wait_until(lock, timer + 1s);
+        }
+        lock.unlock();
+
+        result = pCamMaster->unsetMaster();
+        ASSERT_EQ(EvsResult::OK, result);
+
+        if (listener.joinable()) {
+            listener.join();
+        }
+        ASSERT_EQ(EvsEventType::MASTER_RELEASED,
+                  static_cast<EvsEventType>(aNotification0.aType));
+
+        // Try to adjust a parameter after being retired
+        values.clear();
+        pCamMaster->setIntParameter(camMasterCmds[0], val0,
+                                 [&result, &values](auto status, auto effectiveValues) {
+                                     result = status;
+                                     if (status == EvsResult::OK) {
+                                        for (auto &&v : effectiveValues) {
+                                            values.push_back(v);
+                                        }
+                                     }
+                                 });
+        ASSERT_EQ(EvsResult::INVALID_ARG, result);
+
+        // Non-master client becomes a master
+        result = pCamNonMaster->setMaster();
+        ASSERT_EQ(EvsResult::OK, result);
+
+        // Try to adjust a parameter via new master client
+        for (auto &cmd : camNonMasterCmds) {
+            // Get a valid parameter value range
+            int32_t minVal, maxVal, step;
+            pCamNonMaster->getIntParameterRange(
+                cmd,
+                [&minVal, &maxVal, &step](int32_t val0, int32_t val1, int32_t val2) {
+                    minVal = val0;
+                    maxVal = val1;
+                    step   = val2;
+                }
+            );
+
+            EvsResult result = EvsResult::OK;
+            values.clear();
+            if (cmd == CameraParam::ABSOLUTE_FOCUS) {
+                // Try to turn off auto-focus
+                values.clear();
+                pCamNonMaster->setIntParameter(CameraParam::AUTO_FOCUS, 0,
+                                   [&result, &values](auto status, auto effectiveValues) {
+                                       result = status;
+                                       if (status == EvsResult::OK) {
+                                          for (auto &&v : effectiveValues) {
+                                              values.push_back(v);
+                                          }
+                                       }
+                                   });
+                ASSERT_EQ(EvsResult::OK, result);
+                for (auto &&v : values) {
+                    ASSERT_EQ(v, 0);
+                }
+            }
+
+            // Calculate a parameter value to program.  This is being rounding down.
+            val0 = minVal + (std::rand() % (maxVal - minVal));
+            val0 = val0 - (val0 % step);
+
+            // Prepare and start event listeners.
+            bool listening0 = false;
+            bool listening1 = false;
+            std::condition_variable eventCond;
+            std::thread listener0 = std::thread(
+                [&cmd, &val0, &aNotification0, &frameHandlerMaster, &listening0, &listening1, &eventCond]() {
+                    listening0 = true;
+                    if (listening1) {
+                        eventCond.notify_all();
+                    }
+
+                    EvsEventDesc aTargetEvent;
+                    aTargetEvent.aType = EvsEventType::PARAMETER_CHANGED;
+                    aTargetEvent.payload[0] = static_cast<uint32_t>(cmd);
+                    aTargetEvent.payload[1] = val0;
+                    if (!frameHandlerMaster->waitForEvent(aTargetEvent, aNotification0)) {
+                        ALOGW("A timer is expired before a target event is fired.");
+                    }
+                }
+            );
+            std::thread listener1 = std::thread(
+                [&cmd, &val0, &aNotification1, &frameHandlerNonMaster, &listening0, &listening1, &eventCond]() {
+                    listening1 = true;
+                    if (listening0) {
+                        eventCond.notify_all();
+                    }
+
+                    EvsEventDesc aTargetEvent;
+                    aTargetEvent.aType = EvsEventType::PARAMETER_CHANGED;
+                    aTargetEvent.payload[0] = static_cast<uint32_t>(cmd);
+                    aTargetEvent.payload[1] = val0;
+                    if (!frameHandlerNonMaster->waitForEvent(aTargetEvent, aNotification1)) {
+                        ALOGW("A timer is expired before a target event is fired.");
+                    }
+                }
+            );
+
+            // Wait until a listening thread starts.
+            std::mutex eventLock;
+            std::unique_lock<std::mutex> lock(eventLock);
+            auto timer = std::chrono::system_clock::now();
+            while (!listening0 || !listening1) {
+                eventCond.wait_until(lock, timer + 1s);
+            }
+            lock.unlock();
+
+            // Try to program a parameter
+            values.clear();
+            pCamNonMaster->setIntParameter(cmd, val0,
+                                        [&result, &values](auto status, auto effectiveValues) {
+                                            result = status;
+                                            if (status == EvsResult::OK) {
+                                                for (auto &&v : effectiveValues) {
+                                                    values.push_back(v);
+                                                }
+                                            }
+                                        });
+            ASSERT_EQ(EvsResult::OK, result);
+
+            // Clients expects to receive a parameter change notification
+            // whenever a master client adjusts it.
+            values.clear();
+            pCamNonMaster->getIntParameter(cmd,
+                                        [&result, &values](auto status, auto readValues) {
+                                            result = status;
+                                            if (status == EvsResult::OK) {
+                                                for (auto &&v : readValues) {
+                                                    values.push_back(v);
+                                                }
+                                            }
+                                        });
+            ASSERT_EQ(EvsResult::OK, result);
+            for (auto &&v : values) {
+                ASSERT_EQ(val0, v) << "Values are not matched.";
+            }
+
+            // Join a listening thread.
+            if (listener0.joinable()) {
+                listener0.join();
+            }
+            if (listener1.joinable()) {
+                listener1.join();
+            }
+
+            // Verify a change notification
+            ASSERT_EQ(EvsEventType::PARAMETER_CHANGED,
+                      static_cast<EvsEventType>(aNotification0.aType));
+            ASSERT_EQ(EvsEventType::PARAMETER_CHANGED,
+                      static_cast<EvsEventType>(aNotification1.aType));
+            ASSERT_EQ(cmd,
+                      static_cast<CameraParam>(aNotification0.payload[0]));
+            ASSERT_EQ(cmd,
+                      static_cast<CameraParam>(aNotification1.payload[0]));
+            for (auto &&v : values) {
+                ASSERT_EQ(v,
+                          static_cast<int32_t>(aNotification0.payload[1]));
+                ASSERT_EQ(v,
+                          static_cast<int32_t>(aNotification1.payload[1]));
+            }
+        }
+
+        // New master retires from a master role
+        result = pCamNonMaster->unsetMaster();
+        ASSERT_EQ(EvsResult::OK, result);
+
+        // Shutdown
+        frameHandlerMaster->shutdown();
+        frameHandlerNonMaster->shutdown();
+
+        // Explicitly release the camera
+        pEnumerator->closeCamera(pCamMaster);
+        pEnumerator->closeCamera(pCamNonMaster);
+    }
+}
+
+
+/*
+ * HighPriorityCameraClient:
+ * EVS client, which owns the display, is priortized and therefore can take over
+ * a master role from other EVS clients without the display.
+ */
+TEST_F(EvsHidlTest, HighPriorityCameraClient) {
+    ALOGI("Starting HighPriorityCameraClient test");
+
+    if (mIsHwModule) {
+        // This test is not for HW module implementation.
+        return;
+    }
+
+    // Get the camera list
+    loadCameraList();
+
+    // Using null stream configuration makes EVS uses the default resolution and
+    // output format.
+    Stream nullCfg = {};
+
+    // Request exclusive access to the EVS display
+    sp<IEvsDisplay> pDisplay = pEnumerator->openDisplay();
+    ASSERT_NE(pDisplay, nullptr);
+
+    // Test each reported camera
+    for (auto&& cam: cameraInfo) {
+        activeCameras.clear();
+
+        // Create two clients
+        sp<IEvsCamera_1_1> pCam0 =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, nullCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCam0, nullptr);
+
+        // Store a camera handle for a clean-up
+        activeCameras.push_back(pCam0);
+
+        sp<IEvsCamera_1_1> pCam1 =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, nullCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCam1, nullptr);
+
+        // Store a camera handle for a clean-up
+        activeCameras.push_back(pCam1);
+
+        // Get the parameter list; this test will use the first command in both
+        // lists.
+        std::vector<CameraParam> cam0Cmds, cam1Cmds;
+        pCam0->getParameterList([&cam0Cmds](hidl_vec<CameraParam> cmdList) {
+                cam0Cmds.reserve(cmdList.size());
+                for (auto &&cmd : cmdList) {
+                    cam0Cmds.push_back(cmd);
+                }
+            }
+        );
+
+        pCam1->getParameterList([&cam1Cmds](hidl_vec<CameraParam> cmdList) {
+                cam1Cmds.reserve(cmdList.size());
+                for (auto &&cmd : cmdList) {
+                    cam1Cmds.push_back(cmd);
+                }
+            }
+        );
+        if (cam0Cmds.size() < 1 || cam1Cmds.size() < 1) {
+            // Cannot execute this test.
+            return;
+        }
+
+        // Set up a frame receiver object which will fire up its own thread.
+        sp<FrameHandler> frameHandler0 = new FrameHandler(pCam0, cam,
+                                                          pDisplay,
+                                                          FrameHandler::eAutoReturn);
+        sp<FrameHandler> frameHandler1 = new FrameHandler(pCam1, cam,
+                                                          nullptr,
+                                                          FrameHandler::eAutoReturn);
+
+        // Activate the display
+        pDisplay->setDisplayState(DisplayState::VISIBLE_ON_NEXT_FRAME);
+
+        // Start the camera's video stream
+        ASSERT_TRUE(frameHandler0->startStream());
+        ASSERT_TRUE(frameHandler1->startStream());
+
+        // Ensure the stream starts
+        frameHandler0->waitForFrameCount(1);
+        frameHandler1->waitForFrameCount(1);
+
+        // Client 1 becomes a master and programs a parameter.
+        EvsResult result = EvsResult::OK;
+        // Get a valid parameter value range
+        int32_t minVal, maxVal, step;
+        pCam1->getIntParameterRange(
+            cam1Cmds[0],
+            [&minVal, &maxVal, &step](int32_t val0, int32_t val1, int32_t val2) {
+                minVal = val0;
+                maxVal = val1;
+                step   = val2;
+            }
+        );
+
+        // Client1 becomes a master
+        result = pCam1->setMaster();
+        ASSERT_EQ(EvsResult::OK, result);
+
+        std::vector<int32_t> values;
+        EvsEventDesc aTargetEvent  = {};
+        EvsEventDesc aNotification = {};
+        bool listening = false;
+        std::mutex eventLock;
+        std::condition_variable eventCond;
+        if (cam1Cmds[0] == CameraParam::ABSOLUTE_FOCUS) {
+            std::thread listener = std::thread(
+                [&frameHandler0, &aNotification, &listening, &eventCond] {
+                    listening = true;
+                    eventCond.notify_all();
+
+                    EvsEventDesc aTargetEvent;
+                    aTargetEvent.aType = EvsEventType::PARAMETER_CHANGED;
+                    aTargetEvent.payload[0] = static_cast<uint32_t>(CameraParam::AUTO_FOCUS);
+                    aTargetEvent.payload[1] = 0;
+                    if (!frameHandler0->waitForEvent(aTargetEvent, aNotification)) {
+                        ALOGW("A timer is expired before a target event is fired.");
+                    }
+                }
+            );
+
+            // Wait until a lister starts.
+            std::unique_lock<std::mutex> lock(eventLock);
+            auto timer = std::chrono::system_clock::now();
+            while (!listening) {
+                eventCond.wait_until(lock, timer + 1s);
+            }
+            lock.unlock();
+
+            // Try to turn off auto-focus
+            pCam1->setIntParameter(CameraParam::AUTO_FOCUS, 0,
+                               [&result, &values](auto status, auto effectiveValues) {
+                                   result = status;
+                                   if (status == EvsResult::OK) {
+                                      for (auto &&v : effectiveValues) {
+                                          values.push_back(v);
+                                      }
+                                   }
+                               });
+            ASSERT_EQ(EvsResult::OK, result);
+            for (auto &&v : values) {
+                ASSERT_EQ(v, 0);
+            }
+
+            // Join a listener
+            if (listener.joinable()) {
+                listener.join();
+            }
+
+            // Make sure AUTO_FOCUS is off.
+            ASSERT_EQ(static_cast<EvsEventType>(aNotification.aType),
+                      EvsEventType::PARAMETER_CHANGED);
+        }
+
+        // Try to program a parameter with a random value [minVal, maxVal] after
+        // rounding it down.
+        int32_t val0 = minVal + (std::rand() % (maxVal - minVal));
+        val0 = val0 - (val0 % step);
+
+        std::thread listener = std::thread(
+            [&frameHandler1, &aNotification, &listening, &eventCond, &cam1Cmds, val0] {
+                listening = true;
+                eventCond.notify_all();
+
+                EvsEventDesc aTargetEvent;
+                aTargetEvent.aType = EvsEventType::PARAMETER_CHANGED;
+                aTargetEvent.payload[0] = static_cast<uint32_t>(cam1Cmds[0]);
+                aTargetEvent.payload[1] = val0;
+                if (!frameHandler1->waitForEvent(aTargetEvent, aNotification)) {
+                    ALOGW("A timer is expired before a target event is fired.");
+                }
+            }
+        );
+
+        // Wait until a lister starts.
+        listening = false;
+        std::unique_lock<std::mutex> lock(eventLock);
+        auto timer = std::chrono::system_clock::now();
+        while (!listening) {
+            eventCond.wait_until(lock, timer + 1s);
+        }
+        lock.unlock();
+
+        values.clear();
+        pCam1->setIntParameter(cam1Cmds[0], val0,
+                            [&result, &values](auto status, auto effectiveValues) {
+                                result = status;
+                                if (status == EvsResult::OK) {
+                                    for (auto &&v : effectiveValues) {
+                                        values.push_back(v);
+                                    }
+                                }
+                            });
+        ASSERT_EQ(EvsResult::OK, result);
+        for (auto &&v : values) {
+            ASSERT_EQ(val0, v);
+        }
+
+        // Join a listener
+        if (listener.joinable()) {
+            listener.join();
+        }
+
+        // Verify a change notification
+        ASSERT_EQ(static_cast<EvsEventType>(aNotification.aType),
+                  EvsEventType::PARAMETER_CHANGED);
+        ASSERT_EQ(static_cast<CameraParam>(aNotification.payload[0]),
+                  cam1Cmds[0]);
+        for (auto &&v : values) {
+            ASSERT_EQ(v, static_cast<int32_t>(aNotification.payload[1]));
+        }
+
+        listener = std::thread(
+            [&frameHandler1, &aNotification, &listening, &eventCond] {
+                listening = true;
+                eventCond.notify_all();
+
+                EvsEventDesc aTargetEvent;
+                aTargetEvent.aType = EvsEventType::MASTER_RELEASED;
+                if (!frameHandler1->waitForEvent(aTargetEvent, aNotification, true)) {
+                    ALOGW("A timer is expired before a target event is fired.");
+                }
+            }
+        );
+
+        // Wait until a lister starts.
+        listening = false;
+        lock.lock();
+        timer = std::chrono::system_clock::now();
+        while (!listening) {
+            eventCond.wait_until(lock, timer + 1s);
+        }
+        lock.unlock();
+
+        // Client 0 steals a master role
+        ASSERT_EQ(EvsResult::OK, pCam0->forceMaster(pDisplay));
+
+        // Join a listener
+        if (listener.joinable()) {
+            listener.join();
+        }
+
+        ASSERT_EQ(static_cast<EvsEventType>(aNotification.aType),
+                  EvsEventType::MASTER_RELEASED);
+
+        // Client 0 programs a parameter
+        val0 = minVal + (std::rand() % (maxVal - minVal));
+
+        // Rounding down
+        val0 = val0 - (val0 % step);
+
+        if (cam0Cmds[0] == CameraParam::ABSOLUTE_FOCUS) {
+            std::thread listener = std::thread(
+                [&frameHandler1, &aNotification, &listening, &eventCond] {
+                    listening = true;
+                    eventCond.notify_all();
+
+                    EvsEventDesc aTargetEvent;
+                    aTargetEvent.aType = EvsEventType::PARAMETER_CHANGED;
+                    aTargetEvent.payload[0] = static_cast<uint32_t>(CameraParam::AUTO_FOCUS);
+                    aTargetEvent.payload[1] = 0;
+                    if (!frameHandler1->waitForEvent(aTargetEvent, aNotification)) {
+                        ALOGW("A timer is expired before a target event is fired.");
+                    }
+                }
+            );
+
+            // Wait until a lister starts.
+            std::unique_lock<std::mutex> lock(eventLock);
+            auto timer = std::chrono::system_clock::now();
+            while (!listening) {
+                eventCond.wait_until(lock, timer + 1s);
+            }
+            lock.unlock();
+
+            // Try to turn off auto-focus
+            values.clear();
+            pCam0->setIntParameter(CameraParam::AUTO_FOCUS, 0,
+                               [&result, &values](auto status, auto effectiveValues) {
+                                   result = status;
+                                   if (status == EvsResult::OK) {
+                                      for (auto &&v : effectiveValues) {
+                                          values.push_back(v);
+                                      }
+                                   }
+                               });
+            ASSERT_EQ(EvsResult::OK, result);
+            for (auto &&v : values) {
+                ASSERT_EQ(v, 0);
+            }
+
+            // Join a listener
+            if (listener.joinable()) {
+                listener.join();
+            }
+
+            // Make sure AUTO_FOCUS is off.
+            ASSERT_EQ(static_cast<EvsEventType>(aNotification.aType),
+                      EvsEventType::PARAMETER_CHANGED);
+        }
+
+        listener = std::thread(
+            [&frameHandler0, &aNotification, &listening, &eventCond, &cam0Cmds, val0] {
+                listening = true;
+                eventCond.notify_all();
+
+                EvsEventDesc aTargetEvent;
+                aTargetEvent.aType = EvsEventType::PARAMETER_CHANGED;
+                aTargetEvent.payload[0] = static_cast<uint32_t>(cam0Cmds[0]);
+                aTargetEvent.payload[1] = val0;
+                if (!frameHandler0->waitForEvent(aTargetEvent, aNotification)) {
+                    ALOGW("A timer is expired before a target event is fired.");
+                }
+            }
+        );
+
+        // Wait until a lister starts.
+        listening = false;
+        timer = std::chrono::system_clock::now();
+        lock.lock();
+        while (!listening) {
+            eventCond.wait_until(lock, timer + 1s);
+        }
+        lock.unlock();
+
+        values.clear();
+        pCam0->setIntParameter(cam0Cmds[0], val0,
+                            [&result, &values](auto status, auto effectiveValues) {
+                                result = status;
+                                if (status == EvsResult::OK) {
+                                    for (auto &&v : effectiveValues) {
+                                        values.push_back(v);
+                                    }
+                                }
+                            });
+        ASSERT_EQ(EvsResult::OK, result);
+
+        // Join a listener
+        if (listener.joinable()) {
+            listener.join();
+        }
+        // Verify a change notification
+        ASSERT_EQ(static_cast<EvsEventType>(aNotification.aType),
+                  EvsEventType::PARAMETER_CHANGED);
+        ASSERT_EQ(static_cast<CameraParam>(aNotification.payload[0]),
+                  cam0Cmds[0]);
+        for (auto &&v : values) {
+            ASSERT_EQ(v, static_cast<int32_t>(aNotification.payload[1]));
+        }
+
+        // Turn off the display (yes, before the stream stops -- it should be handled)
+        pDisplay->setDisplayState(DisplayState::NOT_VISIBLE);
+
+        // Shut down the streamer
+        frameHandler0->shutdown();
+        frameHandler1->shutdown();
+
+        // Explicitly release the camera
+        pEnumerator->closeCamera(pCam0);
+        pEnumerator->closeCamera(pCam1);
+    }
+
+    // Explicitly release the display
+    pEnumerator->closeDisplay(pDisplay);
+}
+
+
+/*
+ * CameraUseStreamConfigToDisplay:
+ * End to end test of data flowing from the camera to the display.  Similar to
+ * CameraToDisplayRoundTrip test case but this case retrieves available stream
+ * configurations from EVS and uses one of them to start a video stream.
+ */
+TEST_F(EvsHidlTest, CameraUseStreamConfigToDisplay) {
+    ALOGI("Starting CameraUseStreamConfigToDisplay test");
+
+    // Get the camera list
+    loadCameraList();
+
+    // Request exclusive access to the EVS display
+    sp<IEvsDisplay> pDisplay = pEnumerator->openDisplay();
+    ASSERT_NE(pDisplay, nullptr);
+
+    // Test each reported camera
+    for (auto&& cam: cameraInfo) {
+        activeCameras.clear();
+        // choose a configuration that has a frame rate faster than minReqFps.
+        Stream targetCfg = {};
+        const int32_t minReqFps = 15;
+        int32_t maxArea = 0;
+        camera_metadata_entry_t streamCfgs;
+        bool foundCfg = false;
+        if (!find_camera_metadata_entry(
+                 reinterpret_cast<camera_metadata_t *>(cam.metadata.data()),
+                 ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS,
+                 &streamCfgs)) {
+            // Stream configurations are found in metadata
+            RawStreamConfig *ptr = reinterpret_cast<RawStreamConfig *>(streamCfgs.data.i32);
+            for (unsigned idx = 0; idx < streamCfgs.count; idx += kStreamCfgSz) {
+                if (ptr->direction == ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT &&
+                    ptr->format == HAL_PIXEL_FORMAT_RGBA_8888) {
+
+                    if (ptr->width * ptr->height > maxArea &&
+                        ptr->framerate >= minReqFps) {
+                        targetCfg.width = ptr->width;
+                        targetCfg.height = ptr->height;
+
+                        maxArea = ptr->width * ptr->height;
+                        foundCfg = true;
+                    }
+                }
+                ++ptr;
+            }
+        }
+        targetCfg.format =
+            static_cast<PixelFormat>(HAL_PIXEL_FORMAT_RGBA_8888);
+
+        if (!foundCfg) {
+            // Current EVS camera does not provide stream configurations in the
+            // metadata.
+            continue;
+        }
+
+        sp<IEvsCamera_1_1> pCam =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, targetCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCam, nullptr);
+
+        // Store a camera handle for a clean-up
+        activeCameras.push_back(pCam);
+
+        // Set up a frame receiver object which will fire up its own thread.
+        sp<FrameHandler> frameHandler = new FrameHandler(pCam, cam,
+                                                         pDisplay,
+                                                         FrameHandler::eAutoReturn);
+
+
+        // Activate the display
+        pDisplay->setDisplayState(DisplayState::VISIBLE_ON_NEXT_FRAME);
+
+        // Start the camera's video stream
+        bool startResult = frameHandler->startStream();
+        ASSERT_TRUE(startResult);
+
+        // Wait a while to let the data flow
+        static const int kSecondsToWait = 5;
+        const int streamTimeMs = kSecondsToWait * kSecondsToMilliseconds -
+                                 kMaxStreamStartMilliseconds;
+        const unsigned minimumFramesExpected = streamTimeMs * kMinimumFramesPerSecond /
+                                               kSecondsToMilliseconds;
+        sleep(kSecondsToWait);
+        unsigned framesReceived = 0;
+        unsigned framesDisplayed = 0;
+        frameHandler->getFramesCounters(&framesReceived, &framesDisplayed);
+        EXPECT_EQ(framesReceived, framesDisplayed);
+        EXPECT_GE(framesDisplayed, minimumFramesExpected);
+
+        // Turn off the display (yes, before the stream stops -- it should be handled)
+        pDisplay->setDisplayState(DisplayState::NOT_VISIBLE);
+
+        // Shut down the streamer
+        frameHandler->shutdown();
+
+        // Explicitly release the camera
+        pEnumerator->closeCamera(pCam);
+    }
+
+    // Explicitly release the display
+    pEnumerator->closeDisplay(pDisplay);
+}
+
+
+/*
+ * MultiCameraStreamUseConfig:
+ * Verify that each client can start and stop video streams on the same
+ * underlying camera with same configuration.
+ */
+TEST_F(EvsHidlTest, MultiCameraStreamUseConfig) {
+    ALOGI("Starting MultiCameraStream test");
+
+    if (mIsHwModule) {
+        // This test is not for HW module implementation.
+        return;
+    }
+
+    // Get the camera list
+    loadCameraList();
+
+    // Test each reported camera
+    for (auto&& cam: cameraInfo) {
+        activeCameras.clear();
+        // choose a configuration that has a frame rate faster than minReqFps.
+        Stream targetCfg = {};
+        const int32_t minReqFps = 15;
+        int32_t maxArea = 0;
+        camera_metadata_entry_t streamCfgs;
+        bool foundCfg = false;
+        if (!find_camera_metadata_entry(
+                 reinterpret_cast<camera_metadata_t *>(cam.metadata.data()),
+                 ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS,
+                 &streamCfgs)) {
+            // Stream configurations are found in metadata
+            RawStreamConfig *ptr = reinterpret_cast<RawStreamConfig *>(streamCfgs.data.i32);
+            for (unsigned idx = 0; idx < streamCfgs.count; idx += kStreamCfgSz) {
+                if (ptr->direction == ANDROID_SCALER_AVAILABLE_STREAM_CONFIGURATIONS_OUTPUT &&
+                    ptr->format == HAL_PIXEL_FORMAT_RGBA_8888) {
+
+                    if (ptr->width * ptr->height > maxArea &&
+                        ptr->framerate >= minReqFps) {
+                        targetCfg.width = ptr->width;
+                        targetCfg.height = ptr->height;
+
+                        maxArea = ptr->width * ptr->height;
+                        foundCfg = true;
+                    }
+                }
+                ++ptr;
+            }
+        }
+        targetCfg.format =
+            static_cast<PixelFormat>(HAL_PIXEL_FORMAT_RGBA_8888);
+
+        if (!foundCfg) {
+            ALOGI("Device %s does not provide a list of supported stream configurations, skipped",
+                  cam.v1.cameraId.c_str());
+
+            continue;
+        }
+
+        // Create the first camera client with a selected stream configuration.
+        sp<IEvsCamera_1_1> pCam0 =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, targetCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCam0, nullptr);
+
+        // Store a camera handle for a clean-up
+        activeCameras.push_back(pCam0);
+
+        // Try to create the second camera client with different stream
+        // configuration.
+        int32_t id = targetCfg.id;
+        targetCfg.id += 1;  // EVS manager sees only the stream id.
+        sp<IEvsCamera_1_1> pCam1 =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, targetCfg))
+            .withDefault(nullptr);
+        ASSERT_EQ(pCam1, nullptr);
+
+        // Store a camera handle for a clean-up
+        activeCameras.push_back(pCam0);
+
+        // Try again with same stream configuration.
+        targetCfg.id = id;
+        pCam1 =
+            IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(cam.v1.cameraId, targetCfg))
+            .withDefault(nullptr);
+        ASSERT_NE(pCam1, nullptr);
+
+        // Set up per-client frame receiver objects which will fire up its own thread
+        sp<FrameHandler> frameHandler0 = new FrameHandler(pCam0, cam,
+                                                          nullptr,
+                                                          FrameHandler::eAutoReturn);
+        ASSERT_NE(frameHandler0, nullptr);
+
+        sp<FrameHandler> frameHandler1 = new FrameHandler(pCam1, cam,
+                                                          nullptr,
+                                                          FrameHandler::eAutoReturn);
+        ASSERT_NE(frameHandler1, nullptr);
+
+        // Start the camera's video stream via client 0
+        bool startResult = false;
+        startResult = frameHandler0->startStream() &&
+                      frameHandler1->startStream();
+        ASSERT_TRUE(startResult);
+
+        // Ensure the stream starts
+        frameHandler0->waitForFrameCount(1);
+        frameHandler1->waitForFrameCount(1);
+
+        nsecs_t firstFrame = systemTime(SYSTEM_TIME_MONOTONIC);
+
+        // Wait a bit, then ensure both clients get at least the required minimum number of frames
+        sleep(5);
+        nsecs_t end = systemTime(SYSTEM_TIME_MONOTONIC);
+        unsigned framesReceived0 = 0, framesReceived1 = 0;
+        frameHandler0->getFramesCounters(&framesReceived0, nullptr);
+        frameHandler1->getFramesCounters(&framesReceived1, nullptr);
+        framesReceived0 = framesReceived0 - 1;    // Back out the first frame we already waited for
+        framesReceived1 = framesReceived1 - 1;    // Back out the first frame we already waited for
+        nsecs_t runTime = end - firstFrame;
+        float framesPerSecond0 = framesReceived0 / (runTime * kNanoToSeconds);
+        float framesPerSecond1 = framesReceived1 / (runTime * kNanoToSeconds);
+        ALOGI("Measured camera rate %3.2f fps and %3.2f fps", framesPerSecond0, framesPerSecond1);
+        EXPECT_GE(framesPerSecond0, kMinimumFramesPerSecond);
+        EXPECT_GE(framesPerSecond1, kMinimumFramesPerSecond);
+
+        // Shutdown one client
+        frameHandler0->shutdown();
+
+        // Read frame counters again
+        frameHandler0->getFramesCounters(&framesReceived0, nullptr);
+        frameHandler1->getFramesCounters(&framesReceived1, nullptr);
+
+        // Wait a bit again
+        sleep(5);
+        unsigned framesReceivedAfterStop0 = 0, framesReceivedAfterStop1 = 0;
+        frameHandler0->getFramesCounters(&framesReceivedAfterStop0, nullptr);
+        frameHandler1->getFramesCounters(&framesReceivedAfterStop1, nullptr);
+        EXPECT_EQ(framesReceived0, framesReceivedAfterStop0);
+        EXPECT_LT(framesReceived1, framesReceivedAfterStop1);
+
+        // Shutdown another
+        frameHandler1->shutdown();
+
+        // Explicitly release the camera
+        pEnumerator->closeCamera(pCam0);
+        pEnumerator->closeCamera(pCam1);
+    }
+}
+
+
+/*
+ * LogicalCameraMetadata:
+ * Opens logical camera reported by the enumerator and validate its metadata by
+ * checking its capability and locating supporting physical camera device
+ * identifiers.
+ */
+TEST_F(EvsHidlTest, LogicalCameraMetadata) {
+    ALOGI("Starting LogicalCameraMetadata test");
+
+    // Get the camera list
+    loadCameraList();
+
+    // Open and close each camera twice
+    for (auto&& cam: cameraInfo) {
+        bool isLogicalCam = false;
+        auto devices = getPhysicalCameraIds(cam.v1.cameraId, isLogicalCam);
+        if (isLogicalCam) {
+            ASSERT_GE(devices.size(), 1) <<
+                "Logical camera device must have at least one physical camera device ID in its metadata.";
+        }
+    }
+}
+
+
+int main(int argc, char** argv) {
+    ::testing::AddGlobalTestEnvironment(EvsHidlEnvironment::Instance());
+    ::testing::InitGoogleTest(&argc, argv);
+    EvsHidlEnvironment::Instance()->init(&argc, argv);
+    int status = RUN_ALL_TESTS();
+    ALOGI("Test result = %d", status);
+    return status;
+}
diff --git a/automotive/evs/1.1/vts/fuzzing/Android.bp b/automotive/evs/1.1/vts/fuzzing/Android.bp
new file mode 100644
index 0000000..48427ee
--- /dev/null
+++ b/automotive/evs/1.1/vts/fuzzing/Android.bp
@@ -0,0 +1,50 @@
+//
+// Copyright 2020 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_defaults {
+    name: "android.hardware.automotive.evs@fuzz-defaults",
+    defaults: ["VtsHalTargetTestDefaults"],
+    shared_libs: [
+        "libui",
+        "libcamera_metadata",
+    ],
+    static_libs: [
+        "android.hardware.automotive.evs@1.0",
+        "android.hardware.automotive.evs@1.1",
+        "android.hardware.automotive.evs@common-default-lib",
+        "android.hardware.graphics.common@1.0",
+        "android.hardware.graphics.common@1.1",
+        "android.hardware.graphics.common@1.2",
+        "android.hardware.camera.device@3.2",
+    ],
+    cflags: [
+        "-O0",
+        "-g",
+    ],
+}
+
+cc_fuzz {
+    name: "VtsHalEvsV1_1CameraOpenFuzz",
+    defaults: ["android.hardware.automotive.evs@fuzz-defaults"],
+    srcs: [
+        "VtsHalEvsV1_1CameraOpenFuzz.cpp",
+    ],
+    fuzz_config: {
+        // wait for Haiku device ready
+        fuzz_on_haiku_device: false,
+        fuzz_on_haiku_host: false,
+    },
+}
diff --git a/automotive/evs/1.1/vts/fuzzing/VtsHalEvsV1_1CameraOpenFuzz.cpp b/automotive/evs/1.1/vts/fuzzing/VtsHalEvsV1_1CameraOpenFuzz.cpp
new file mode 100644
index 0000000..4f05d21
--- /dev/null
+++ b/automotive/evs/1.1/vts/fuzzing/VtsHalEvsV1_1CameraOpenFuzz.cpp
@@ -0,0 +1,84 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "common.h"
+
+using ::android::hardware::automotive::evs::V1_0::DisplayDesc;
+using ::android::hardware::camera::device::V3_2::Stream;
+using IEvsCamera_1_1 = ::android::hardware::automotive::evs::V1_1::IEvsCamera;
+
+extern "C" int LLVMFuzzerInitialize(int* argc, char*** argv) {
+    UNUSED(argc);
+    UNUSED(argv);
+    pEnumerator = IEvsEnumerator::getService(kEnumeratorName);
+    sp<EvsDeathRecipient> dr = new EvsDeathRecipient();
+
+    pEnumerator->linkToDeath(dr, 0);
+
+    loadCameraList();
+    return 0;
+}
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+    FuzzedDataProvider fdp(data, size);
+
+    std::vector<sp<IEvsCamera_1_1>> camList;
+    Stream nullCfg = {};
+
+    while (fdp.remaining_bytes() > 4) {
+        switch (fdp.ConsumeIntegralInRange<uint32_t>(0, 3)) {
+            case 0:  // open camera
+            {
+                uint32_t whichCam = fdp.ConsumeIntegralInRange<uint32_t>(0, cameraInfo.size() - 1);
+                sp<IEvsCamera_1_1> pCam =
+                        IEvsCamera_1_1::castFrom(pEnumerator->openCamera_1_1(
+                                                         cameraInfo[whichCam].v1.cameraId, nullCfg))
+                                .withDefault(nullptr);
+                camList.emplace_back(pCam);
+                break;
+            }
+            case 1:  // close camera
+            {
+                if (!camList.empty()) {
+                    uint32_t whichCam = fdp.ConsumeIntegralInRange<uint32_t>(0, camList.size() - 1);
+                    pEnumerator->closeCamera(camList[whichCam]);
+                }
+                break;
+            }
+            case 2:  // get camera info
+            {
+                if (!camList.empty()) {
+                    uint32_t whichCam = fdp.ConsumeIntegralInRange<uint32_t>(0, camList.size() - 1);
+                    camList[whichCam]->getCameraInfo_1_1([](CameraDesc desc) { UNUSED(desc); });
+                }
+                break;
+            }
+            case 3:  // setMaxFramesInFlight
+            {
+                if (!camList.empty()) {
+                    uint32_t whichCam = fdp.ConsumeIntegralInRange<uint32_t>(0, camList.size() - 1);
+                    int32_t numFrames = fdp.ConsumeIntegral<int32_t>();
+                    camList[whichCam]->setMaxFramesInFlight(numFrames);
+                }
+                break;
+            }
+            default:
+                break;
+        }
+    }
+
+    return 0;
+}
diff --git a/automotive/evs/1.1/vts/fuzzing/common.h b/automotive/evs/1.1/vts/fuzzing/common.h
new file mode 100644
index 0000000..af6fd54
--- /dev/null
+++ b/automotive/evs/1.1/vts/fuzzing/common.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "VtsHalEvsTest"
+#define UNUSED(x) (void)(x)
+
+const static char kEnumeratorName[] = "EvsEnumeratorHw";
+
+#include <android/hardware/automotive/evs/1.1/IEvsEnumerator.h>
+#include <fuzzer/FuzzedDataProvider.h>
+#include <hidl/HidlTransportSupport.h>
+#include <utils/StrongPointer.h>
+
+using namespace ::android::hardware::automotive::evs::V1_1;
+
+using ::android::sp;
+using ::android::hardware::hidl_death_recipient;
+using ::android::hardware::hidl_vec;
+
+static sp<IEvsEnumerator> pEnumerator;
+static std::vector<CameraDesc> cameraInfo;
+
+class EvsDeathRecipient : public hidl_death_recipient {
+  public:
+    void serviceDied(uint64_t /*cookie*/,
+                     const android::wp<::android::hidl::base::V1_0::IBase>& /*who*/) override {
+        abort();
+    }
+};
+
+void loadCameraList() {
+    // SetUp() must run first!
+    assert(pEnumerator != nullptr);
+
+    // Get the camera list
+    pEnumerator->getCameraList_1_1([](hidl_vec<CameraDesc> cameraList) {
+        ALOGI("Camera list callback received %zu cameras", cameraList.size());
+        cameraInfo.reserve(cameraList.size());
+        for (auto&& cam : cameraList) {
+            ALOGI("Found camera %s", cam.v1.cameraId.c_str());
+            cameraInfo.push_back(cam);
+        }
+    });
+}
diff --git a/automotive/evs/common/utils/default/Android.bp b/automotive/evs/common/utils/default/Android.bp
new file mode 100644
index 0000000..776ef81
--- /dev/null
+++ b/automotive/evs/common/utils/default/Android.bp
@@ -0,0 +1,32 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_library_static {
+    host_supported: true,
+    name: "android.hardware.automotive.evs@common-default-lib",
+    vendor_available: true,
+    relative_install_path: "hw",
+    cflags: [
+        "-O0",
+        "-g",
+    ],
+    srcs: [
+        "FormatConvert.cpp"
+    ],
+    export_include_dirs: ["include"],
+    shared_libs: [
+    ],
+}
diff --git a/automotive/evs/common/utils/default/FormatConvert.cpp b/automotive/evs/common/utils/default/FormatConvert.cpp
new file mode 100644
index 0000000..d4c7da0
--- /dev/null
+++ b/automotive/evs/common/utils/default/FormatConvert.cpp
@@ -0,0 +1,220 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "VtsHalEvsTest"
+
+#include "FormatConvert.h"
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace evs {
+namespace common {
+
+// Round up to the nearest multiple of the given alignment value
+template<unsigned alignment>
+int Utils::align(int value) {
+    static_assert((alignment && !(alignment & (alignment - 1))),
+                  "alignment must be a power of 2");
+
+    unsigned mask = alignment - 1;
+    return (value + mask) & ~mask;
+}
+
+
+// Limit the given value to the provided range.  :)
+inline float Utils::clamp(float v, float min, float max) {
+    if (v < min) return min;
+    if (v > max) return max;
+    return v;
+}
+
+
+uint32_t Utils::yuvToRgbx(const unsigned char Y,
+                          const unsigned char Uin,
+                          const unsigned char Vin,
+                          bool bgrxFormat) {
+    // Don't use this if you want to see the best performance.  :)
+    // Better to do this in a pixel shader if we really have to, but on actual
+    // embedded hardware we expect to be able to texture directly from the YUV data
+    float U = Uin - 128.0f;
+    float V = Vin - 128.0f;
+
+    float Rf = Y + 1.140f*V;
+    float Gf = Y - 0.395f*U - 0.581f*V;
+    float Bf = Y + 2.032f*U;
+    unsigned char R = (unsigned char)clamp(Rf, 0.0f, 255.0f);
+    unsigned char G = (unsigned char)clamp(Gf, 0.0f, 255.0f);
+    unsigned char B = (unsigned char)clamp(Bf, 0.0f, 255.0f);
+
+    if (!bgrxFormat) {
+        return (R      ) |
+               (G <<  8) |
+               (B << 16) |
+               0xFF000000;  // Fill the alpha channel with ones
+    } else {
+        return (R << 16) |
+               (G <<  8) |
+               (B      ) |
+               0xFF000000;  // Fill the alpha channel with ones
+    }
+}
+
+
+void Utils::copyNV21toRGB32(unsigned width, unsigned height,
+                            uint8_t* src,
+                            uint32_t* dst, unsigned dstStridePixels,
+                            bool bgrxFormat)
+{
+    // The NV21 format provides a Y array of 8bit values, followed by a 1/2 x 1/2 interleaved
+    // U/V array.  It assumes an even width and height for the overall image, and a horizontal
+    // stride that is an even multiple of 16 bytes for both the Y and UV arrays.
+    unsigned strideLum = align<16>(width);
+    unsigned sizeY = strideLum * height;
+    unsigned strideColor = strideLum;   // 1/2 the samples, but two interleaved channels
+    unsigned offsetUV = sizeY;
+
+    uint8_t* srcY = src;
+    uint8_t* srcUV = src+offsetUV;
+
+    for (unsigned r = 0; r < height; r++) {
+        // Note that we're walking the same UV row twice for even/odd luminance rows
+        uint8_t* rowY  = srcY  + r*strideLum;
+        uint8_t* rowUV = srcUV + (r/2 * strideColor);
+
+        uint32_t* rowDest = dst + r*dstStridePixels;
+
+        for (unsigned c = 0; c < width; c++) {
+            unsigned uCol = (c & ~1);   // uCol is always even and repeats 1:2 with Y values
+            unsigned vCol = uCol | 1;   // vCol is always odd
+            rowDest[c] = yuvToRgbx(rowY[c], rowUV[uCol], rowUV[vCol], bgrxFormat);
+        }
+    }
+}
+
+
+void Utils::copyYV12toRGB32(unsigned width, unsigned height,
+                            uint8_t* src,
+                            uint32_t* dst, unsigned dstStridePixels,
+                            bool bgrxFormat)
+{
+    // The YV12 format provides a Y array of 8bit values, followed by a 1/2 x 1/2 U array, followed
+    // by another 1/2 x 1/2 V array.  It assumes an even width and height for the overall image,
+    // and a horizontal stride that is an even multiple of 16 bytes for each of the Y, U,
+    // and V arrays.
+    unsigned strideLum = align<16>(width);
+    unsigned sizeY = strideLum * height;
+    unsigned strideColor = align<16>(strideLum/2);
+    unsigned sizeColor = strideColor * height/2;
+    unsigned offsetU = sizeY;
+    unsigned offsetV = sizeY + sizeColor;
+
+    uint8_t* srcY = src;
+    uint8_t* srcU = src+offsetU;
+    uint8_t* srcV = src+offsetV;
+
+    for (unsigned r = 0; r < height; r++) {
+        // Note that we're walking the same U and V rows twice for even/odd luminance rows
+        uint8_t* rowY = srcY + r*strideLum;
+        uint8_t* rowU = srcU + (r/2 * strideColor);
+        uint8_t* rowV = srcV + (r/2 * strideColor);
+
+        uint32_t* rowDest = dst + r*dstStridePixels;
+
+        for (unsigned c = 0; c < width; c++) {
+            rowDest[c] = yuvToRgbx(rowY[c], rowU[c], rowV[c], bgrxFormat);
+        }
+    }
+}
+
+
+void Utils::copyYUYVtoRGB32(unsigned width, unsigned height,
+                            uint8_t* src, unsigned srcStridePixels,
+                            uint32_t* dst, unsigned dstStridePixels,
+                            bool bgrxFormat)
+{
+    uint32_t* srcWords = (uint32_t*)src;
+
+    const int srcRowPadding32 = srcStridePixels/2 - width/2;  // 2 bytes per pixel, 4 bytes per word
+    const int dstRowPadding32 = dstStridePixels   - width;    // 4 bytes per pixel, 4 bytes per word
+
+    for (unsigned r = 0; r < height; r++) {
+        for (unsigned c = 0; c < width/2; c++) {
+            // Note:  we're walking two pixels at a time here (even/odd)
+            uint32_t srcPixel = *srcWords++;
+
+            uint8_t Y1 = (srcPixel)       & 0xFF;
+            uint8_t U  = (srcPixel >> 8)  & 0xFF;
+            uint8_t Y2 = (srcPixel >> 16) & 0xFF;
+            uint8_t V  = (srcPixel >> 24) & 0xFF;
+
+            // On the RGB output, we're writing one pixel at a time
+            *(dst+0) = yuvToRgbx(Y1, U, V, bgrxFormat);
+            *(dst+1) = yuvToRgbx(Y2, U, V, bgrxFormat);
+            dst += 2;
+        }
+
+        // Skip over any extra data or end of row alignment padding
+        srcWords += srcRowPadding32;
+        dst += dstRowPadding32;
+    }
+}
+
+
+void Utils::copyNV21toBGR32(unsigned width, unsigned height,
+                            uint8_t* src,
+                            uint32_t* dst, unsigned dstStridePixels)
+{
+    return copyNV21toRGB32(width, height, src, dst, dstStridePixels, true);
+}
+
+
+void Utils::copyYV12toBGR32(unsigned width, unsigned height,
+                            uint8_t* src,
+                            uint32_t* dst, unsigned dstStridePixels)
+{
+    return copyYV12toRGB32(width, height, src, dst, dstStridePixels, true);
+}
+
+
+void Utils::copyYUYVtoBGR32(unsigned width, unsigned height,
+                            uint8_t* src, unsigned srcStridePixels,
+                            uint32_t* dst, unsigned dstStridePixels)
+{
+    return copyYUYVtoRGB32(width, height, src, srcStridePixels, dst, dstStridePixels, true);
+}
+
+
+void Utils::copyMatchedInterleavedFormats(unsigned width, unsigned height,
+                                          void* src, unsigned srcStridePixels,
+                                          void* dst, unsigned dstStridePixels,
+                                          unsigned pixelSize) {
+    for (unsigned row = 0; row < height; row++) {
+        // Copy the entire row of pixel data
+        memcpy(dst, src, width * pixelSize);
+
+        // Advance to the next row (keeping in mind that stride here is in units of pixels)
+        src = (uint8_t*)src + srcStridePixels * pixelSize;
+        dst = (uint8_t*)dst + dstStridePixels * pixelSize;
+    }
+}
+
+} // namespace common
+} // namespace evs
+} // namespace automotive
+} // namespace hardware
+} // namespace android
+
diff --git a/automotive/evs/common/utils/default/include/FormatConvert.h b/automotive/evs/common/utils/default/include/FormatConvert.h
new file mode 100644
index 0000000..2bb8955
--- /dev/null
+++ b/automotive/evs/common/utils/default/include/FormatConvert.h
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef EVS_VTS_FORMATCONVERT_H
+#define EVS_VTS_FORMATCONVERT_H
+
+#include <queue>
+#include <stdint.h>
+
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace evs {
+namespace common {
+
+class Utils {
+public:
+    // Given an image buffer in NV21 format (HAL_PIXEL_FORMAT_YCRCB_420_SP), output 32bit RGBx/BGRx
+    // values.  The NV21 format provides a Y array of 8bit values, followed by a 1/2 x 1/2 interleaved
+    // U/V array.  It assumes an even width and height for the overall image, and a horizontal
+    // stride that is an even multiple of 16 bytes for both the Y and UV arrays.
+    static void copyNV21toRGB32(unsigned width, unsigned height,
+                                uint8_t* src,
+                                uint32_t* dst, unsigned dstStridePixels,
+                                bool bgrxFormat = false);
+
+    static void copyNV21toBGR32(unsigned width, unsigned height,
+                                uint8_t* src,
+                                uint32_t* dst, unsigned dstStridePixels);
+
+
+    // Given an image buffer in YV12 format (HAL_PIXEL_FORMAT_YV12), output 32bit RGBx/BGRx values.
+    // The YV12 format provides a Y array of 8bit values, followed by a 1/2 x 1/2 U array, followed
+    // by another 1/2 x 1/2 V array.  It assumes an even width and height for the overall image,
+    // and a horizontal stride that is an even multiple of 16 bytes for each of the Y, U,
+    // and V arrays.
+    static void copyYV12toRGB32(unsigned width, unsigned height,
+                                uint8_t* src,
+                                uint32_t* dst, unsigned dstStridePixels,
+                                bool bgrxFormat = false);
+
+    static void copyYV12toBGR32(unsigned width, unsigned height,
+                                uint8_t* src,
+                                uint32_t* dst, unsigned dstStridePixels);
+
+    // Given an image buffer in YUYV format (HAL_PIXEL_FORMAT_YCBCR_422_I), output 32bit RGBx/BGRx
+    // values.  The NV21 format provides a Y array of 8bit values, followed by a 1/2 x 1/2 interleaved
+    // U/V array.  It assumes an even width and height for the overall image, and a horizontal
+    // stride that is an even multiple of 16 bytes for both the Y and UV arrays.
+    static void copyYUYVtoRGB32(unsigned width, unsigned height,
+                                uint8_t* src, unsigned srcStrideBytes,
+                                uint32_t* dst, unsigned dstStrideBytes,
+                                bool bgrxFormat = false);
+
+    static void copyYUYVtoBGR32(unsigned width, unsigned height,
+                                uint8_t* src, unsigned srcStrideBytes,
+                                uint32_t* dst, unsigned dstStrideBytes);
+
+
+    // Given an simple rectangular image buffer with an integer number of bytes per pixel,
+    // copy the pixel values into a new rectangular buffer (potentially with a different stride).
+    // This is typically used to copy RGBx data into an RGBx output buffer.
+    static void copyMatchedInterleavedFormats(unsigned width, unsigned height,
+                                              void* src, unsigned srcStridePixels,
+                                              void* dst, unsigned dstStridePixels,
+                                              unsigned pixelSize);
+
+private:
+    template<unsigned alignment>
+    static int align(int value);
+
+    static inline float clamp(float v, float min, float max);
+    static uint32_t yuvToRgbx(const unsigned char Y,
+                              const unsigned char Uin,
+                              const unsigned char Vin,
+                              bool bgrxFormat = false);
+};
+
+} // namespace common
+} // namespace evs
+} // namespace automotive
+} // namespace hardware
+} // namespace android
+
+#endif // EVS_VTS_FORMATCONVERT_H
diff --git a/automotive/evs/common/utils/default/test/fuzz/Android.bp b/automotive/evs/common/utils/default/test/fuzz/Android.bp
new file mode 100644
index 0000000..105ec68
--- /dev/null
+++ b/automotive/evs/common/utils/default/test/fuzz/Android.bp
@@ -0,0 +1,99 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_fuzz {
+    host_supported: true,
+    name : "FormatConvertFuzzer_copyNV21toRGB32",
+    srcs: [
+        "FormatConvertFuzzer.cpp",
+    ],
+    static_libs: [
+        "android.hardware.automotive.evs@common-default-lib"
+    ],
+    cflags: [
+        "-DCOPY_NV21_TO_RGB32",
+    ],
+}
+
+cc_fuzz {
+    host_supported: true,
+    name : "FormatConvertFuzzer_copyNV21toBGR32",
+    srcs: [
+        "FormatConvertFuzzer.cpp",
+    ],
+    static_libs: [
+        "android.hardware.automotive.evs@common-default-lib"
+    ],
+    cflags: [
+        "-DCOPY_NV21_TO_BGR32",
+    ],
+}
+
+cc_fuzz {
+    host_supported: true,
+    name : "FormatConvertFuzzer_copyYV12toRGB32",
+    srcs: [
+        "FormatConvertFuzzer.cpp",
+    ],
+    static_libs: [
+        "android.hardware.automotive.evs@common-default-lib"
+    ],
+    cflags: [
+        "-DCOPY_YV12_TO_RGB32",
+    ],
+}
+
+cc_fuzz {
+    host_supported: true,
+    name : "FormatConvertFuzzer_copyYV12toBGR32",
+    srcs: [
+        "FormatConvertFuzzer.cpp",
+    ],
+    static_libs: [
+        "android.hardware.automotive.evs@common-default-lib"
+    ],
+    cflags: [
+        "-DCOPY_YV12_TO_BGR32",
+    ],
+}
+
+cc_fuzz {
+    host_supported: true,
+    name : "FormatConvertFuzzer_copyYUYVtoRGB32",
+    srcs: [
+        "FormatConvertFuzzer.cpp",
+    ],
+    static_libs: [
+        "android.hardware.automotive.evs@common-default-lib"
+    ],
+    cflags: [
+        "-DCOPY_YUYV_TO_RGB32",
+    ],
+}
+
+cc_fuzz {
+    host_supported: true,
+    name : "FormatConvertFuzzer_copyYUYVtoBGR32",
+    srcs: [
+        "FormatConvertFuzzer.cpp",
+    ],
+    static_libs: [
+        "android.hardware.automotive.evs@common-default-lib"
+    ],
+    cflags: [
+        "-DCOPY_YUYV_TO_BGR32",
+    ],
+}
diff --git a/automotive/evs/common/utils/default/test/fuzz/FormatConvertFuzzer.cpp b/automotive/evs/common/utils/default/test/fuzz/FormatConvertFuzzer.cpp
new file mode 100644
index 0000000..583a455
--- /dev/null
+++ b/automotive/evs/common/utils/default/test/fuzz/FormatConvertFuzzer.cpp
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <cmath>
+#include <cstdlib>
+#include <cstring>
+#include <ctime>
+#include "FormatConvert.h"
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, std::size_t size) {
+    if (size < 256) {
+        return 0;
+    }
+
+    std::srand(std::time(nullptr));  // use current time as seed for random generator
+    int random_variable = std::rand() % 10;
+    int width = (int)sqrt(size);
+    int height = width * ((float)random_variable / 10.0);
+
+    uint8_t* src = (uint8_t*)malloc(sizeof(uint8_t) * size);
+    memcpy(src, data, sizeof(uint8_t) * (size));
+    uint32_t* tgt = (uint32_t*)malloc(sizeof(uint32_t) * size);
+
+#ifdef COPY_NV21_TO_RGB32
+    android::hardware::automotive::evs::common::Utils::copyNV21toRGB32(width, height, src, tgt, 0);
+#elif COPY_NV21_TO_BGR32
+    android::hardware::automotive::evs::common::Utils::copyNV21toBGR32(width, height, src, tgt, 0);
+#elif COPY_YV12_TO_RGB32
+    android::hardware::automotive::evs::common::Utils::copyYV12toRGB32(width, height, src, tgt, 0);
+#elif COPY_YV12_TO_BGR32
+    android::hardware::automotive::evs::common::Utils::copyYV12toBGR32(width, height, src, tgt, 0);
+#elif COPY_YUYV_TO_RGB32
+    android::hardware::automotive::evs::common::Utils::copyYUYVtoRGB32(width, height, src, 0, tgt,
+                                                                       0);
+#elif COPY_YUYV_TO_BGR32
+    android::hardware::automotive::evs::common::Utils::copyYUYVtoBGR32(width, height, src, 0, tgt,
+                                                                       0);
+#endif
+
+    free(src);
+    free(tgt);
+
+    return 0;
+}
diff --git a/automotive/occupant_awareness/aidl/Android.bp b/automotive/occupant_awareness/aidl/Android.bp
new file mode 100644
index 0000000..face235
--- /dev/null
+++ b/automotive/occupant_awareness/aidl/Android.bp
@@ -0,0 +1,18 @@
+aidl_interface {
+    name: "android.hardware.automotive.occupant_awareness",
+    vendor_available: true,
+    srcs: [
+        "android/hardware/automotive/occupant_awareness/*.aidl",
+    ],
+    stability: "vintf",
+    backend: {
+        java: {
+            platform_apis: true,
+        },
+        ndk: {
+            vndk: {
+                enabled: true,
+            },
+        },
+    },
+}
diff --git a/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/ConfidenceLevel.aidl b/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/ConfidenceLevel.aidl
new file mode 100644
index 0000000..8597ddb
--- /dev/null
+++ b/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/ConfidenceLevel.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.occupant_awareness;
+
+@VintfStability
+@Backing(type="byte")
+enum ConfidenceLevel {
+    /**
+     * No prediction could be made.
+     */
+    NONE,
+    /**
+     * Best-guess, low-confidence prediction. Predictions exceeding this threshold are adequate
+     * for non-critical applications.
+     */
+    LOW,
+    /**
+     * High-confidence prediction. Predictions exceeding this threshold are adequate for
+     * applications that require reliable predictions.
+     */
+    HIGH,
+    /**
+     * Highest confidence rate achievable.
+     */
+    MAX,
+}
diff --git a/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/DriverMonitoringDetection.aidl b/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/DriverMonitoringDetection.aidl
new file mode 100644
index 0000000..f5cc9d5
--- /dev/null
+++ b/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/DriverMonitoringDetection.aidl
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.occupant_awareness;
+
+import android.hardware.automotive.occupant_awareness.ConfidenceLevel;
+
+@VintfStability
+parcelable DriverMonitoringDetection {
+    /*
+     * Confidence of the computed attention data.
+     */
+    ConfidenceLevel confidenceScore;
+    /*
+     * Is the driver currently looking on-road?
+     */
+    boolean isLookingOnRoad;
+    /*
+     * Duration the driver has been looking on or off road, in milliseconds.
+     */
+    long gazeDurationMillis;
+}
+
diff --git a/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/GazeDetection.aidl b/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/GazeDetection.aidl
new file mode 100644
index 0000000..fc36e13
--- /dev/null
+++ b/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/GazeDetection.aidl
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.occupant_awareness;
+
+import android.hardware.automotive.occupant_awareness.VehicleRegion;
+import android.hardware.automotive.occupant_awareness.ConfidenceLevel;
+
+@VintfStability
+parcelable GazeDetection {
+    /*
+     * Confidence level for the gaze detection.
+     */
+    ConfidenceLevel gazeConfidence;
+    /*
+     * Head position, in millimeters. The vehicle coordinate system is specified in the cabin space
+     * configuration. headPosition is double[3] array.
+     */
+    double[] headPosition;
+    /*
+     * Unit vector for the head pose direction. The vehicle coordinate system is specified in the
+     * cabin space configuration. headAngleUnitVector is double[3] array.
+     */
+    double[] headAngleUnitVector;
+    /*
+     * Unit vector for the gaze direction. The vehicle coordinate system is specified in the cabin
+     * space configuration. gazeAngleUnitVector is double[3] array.
+     */
+    double[] gazeAngleUnitVector;
+    /*
+     * Current gaze target.
+     */
+    VehicleRegion gazeTarget;
+    /*
+     * Custom gaze target string. This only need to be populated when gazeTarget is CUSTOM_TARGET.
+     * Vendors should use "com.vendor_name.target_name" format to avoid name collision with other
+     * vendors.
+     */
+    String customGazeTarget;
+    /*
+     * Duration that the subject has been looking at the current gaze target in milliseconds.
+     */
+    long timeOnTargetMillis;
+}
diff --git a/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/IOccupantAwareness.aidl b/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/IOccupantAwareness.aidl
new file mode 100644
index 0000000..1df0bda
--- /dev/null
+++ b/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/IOccupantAwareness.aidl
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.occupant_awareness;
+
+import android.hardware.automotive.occupant_awareness.OccupantAwarenessStatus;
+import android.hardware.automotive.occupant_awareness.Role;
+import android.hardware.automotive.occupant_awareness.IOccupantAwarenessClientCallback;
+import android.hardware.automotive.occupant_awareness.OccupantDetections;
+
+@VintfStability
+interface IOccupantAwareness {
+    /*
+     * System not able to generate any occupancy awareness.
+     */
+    const int CAP_NONE = 0;
+    /*
+     * System is able to detect the presence of humans.
+     */
+    const int CAP_PRESENCE_DETECTION = 1 << 0;
+    /*
+     * System is able to detect the gaze of humans.
+     */
+    const int CAP_GAZE_DETECTION = 1 << 1;
+    /*
+     * System is able to compute the attention details of humans.
+     */
+    const int CAP_DRIVER_MONITORING_DETECTION = 1 << 2;
+
+    /**
+     * Starts the occupant awareness detection system. This is a non-blocking function call.
+     * Once system is ready, state will be modified. State update can be inrquired using callback
+     * or getState() function.
+     * @return status is the current system state.
+     */
+    OccupantAwarenessStatus startDetection();
+
+    /**
+     * Stops the occupant awareness detection system. This is a non-blocking function call.
+     * Once system is reset, state will be modified. State update can be inrquired using callback
+     * or getState() function.
+     * @return status is the current system state.
+     */
+    OccupantAwarenessStatus stopDetection();
+
+    /**
+     * Returns list of Awareness Capability supported for the given type of occupants.
+     *
+     * @param out Bitwise OR of supported capabilities (CAP_* mask).
+     */
+    int getCapabilityForRole(in Role occupantRole);
+
+    /**
+     * Inquires the current state of the occupant awareness system.
+     * @param occupantRole specifies the role of occupants of interest.
+     * @param detectionCapability specifies a single detection capability (CAP_* ) of interest.
+     *
+     * @return status is the current system state.
+     */
+    OccupantAwarenessStatus getState(in Role occupantRole, in int detectionCapability);
+
+    /**
+     * Registers a callback for data streaming. Only single callback is supported. setCallback()
+     *        should replace existing callback with new callback.
+     * @return: returns ok if successful.
+     */
+    void setCallback(in IOccupantAwarenessClientCallback callback);
+
+    /**
+     * Returns the most recent set of detections.
+     * @param OccupantDetections output detections.
+     * @return returns ok if successful.
+     */
+    void getLatestDetection(out OccupantDetections detections);
+}
diff --git a/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/IOccupantAwarenessClientCallback.aidl b/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/IOccupantAwarenessClientCallback.aidl
new file mode 100644
index 0000000..69f7b0b
--- /dev/null
+++ b/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/IOccupantAwarenessClientCallback.aidl
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.occupant_awareness;
+
+import android.hardware.automotive.occupant_awareness.OccupantAwarenessStatus;
+import android.hardware.automotive.occupant_awareness.OccupantDetections;
+
+@VintfStability
+interface IOccupantAwarenessClientCallback {
+    /**
+     * A callback invoked when the system status changes.
+     *
+     * @param detectionFlags The detection subsystem(s) whose status has changed.
+     * @param status The new system status.
+     */
+    oneway void onSystemStatusChanged(in int detectionFlags, in OccupantAwarenessStatus status);
+
+    /**
+     * A callback invoked when a new set of detections are available.
+     *
+     * @param detections Occupant detections.
+     */
+    oneway void onDetectionEvent(in OccupantDetections detections);
+}
diff --git a/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/OccupantAwarenessStatus.aidl b/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/OccupantAwarenessStatus.aidl
new file mode 100644
index 0000000..6a3453d
--- /dev/null
+++ b/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/OccupantAwarenessStatus.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.occupant_awareness;
+
+@VintfStability
+@Backing(type="byte")
+enum OccupantAwarenessStatus {
+    /*
+     * System is online and ready to serve requests.
+     */
+    READY = 0,
+    /**
+     * Detection is not supported in this vehicle due to a permanent lack of capabilities. Clients
+     * need not retry.
+     */
+    NOT_SUPPORTED = 1,
+    /*
+     * The system has not yet been initialized. No requests can be served until the
+     * initialization process completes. This state does not indicate any error and
+     * clients should retry later.
+     */
+    NOT_INITIALIZED = 2,
+    /*
+     * A permanent failure has occurred. No detections will be provided.
+     */
+    FAILURE = 3,
+}
diff --git a/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/OccupantDetection.aidl b/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/OccupantDetection.aidl
new file mode 100644
index 0000000..47ca35a
--- /dev/null
+++ b/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/OccupantDetection.aidl
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.occupant_awareness;
+
+import android.hardware.automotive.occupant_awareness.Role;
+import android.hardware.automotive.occupant_awareness.PresenceDetection;
+import android.hardware.automotive.occupant_awareness.GazeDetection;
+import android.hardware.automotive.occupant_awareness.DriverMonitoringDetection;
+
+/*
+ * A complete detection for a single occupant in the vehicle. Includes data about the subject's
+ * presence in the vehicle, gaze and attention.
+ */
+ @VintfStability
+parcelable OccupantDetection {
+    /*
+     * Role of the occupant (e.g., driver, passenger).
+     */
+    Role role;
+    /*
+     * Occupant presence state for a single occupant.
+     * If the vector is empty, no data could be generated.
+     */
+    PresenceDetection[] presenceData;
+    /*
+     * Gaze data for a single occupant.
+     * If the vector is empty, no data could be generated.
+     */
+    GazeDetection[] gazeData;
+    /*
+     * Attention data for a single occupant.
+     * If the vector is empty, no data could be generated.
+     */
+    DriverMonitoringDetection[] attentionData;
+}
+
diff --git a/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/OccupantDetections.aidl b/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/OccupantDetections.aidl
new file mode 100644
index 0000000..e8f6621
--- /dev/null
+++ b/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/OccupantDetections.aidl
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.occupant_awareness;
+
+import android.hardware.automotive.occupant_awareness.OccupantDetection;
+
+@VintfStability
+parcelable OccupantDetections {
+    /**
+     * Timestamp that the underlying source image was captured, in milliseconds since Jan 1, 1970
+     * (Unix time).
+     */
+    long timeStampMillis;
+    /**
+     * A vector of detections for all occupants in the vehicle. One OccupantDetection will be
+     * generated per detected face.
+     */
+    OccupantDetection[] detections;
+}
+
diff --git a/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/PresenceDetection.aidl b/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/PresenceDetection.aidl
new file mode 100644
index 0000000..a018106
--- /dev/null
+++ b/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/PresenceDetection.aidl
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.occupant_awareness;
+
+@VintfStability
+parcelable PresenceDetection {
+    /*
+     * Boolean representing whether an occupant was detected.
+     */
+    boolean isOccupantDetected;
+    /**
+     * Duration that a particular occupant has been continuously
+     * detected, in milliseconds. Will be zero duration if the occupant is not
+     * currently detected.
+     */
+    long detectionDurationMillis;
+}
diff --git a/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/Role.aidl b/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/Role.aidl
new file mode 100644
index 0000000..42e86ad
--- /dev/null
+++ b/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/Role.aidl
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.occupant_awareness;
+
+@VintfStability
+@Backing(type="int")
+enum Role {
+    /*
+     * All valid role(s) must have at least 1 bit set.
+     */
+    INVALID = 0,
+    /*
+     * System could not determine role for this occupant.
+     */
+    UNKNOWN = 1 << 0,
+    /*
+     * Occupants that the system detects as front seat passengers.
+     */
+    FRONT_PASSENGER = 1 << 1,
+    /*
+     * Occupants that the system detects as driver(s).
+     */
+    DRIVER = 1 << 2,
+    /*
+     * Occupants on left seat of row 2.
+     */
+    ROW_2_PASSENGER_LEFT = 1 << 3,
+    /*
+     * Occupants on center seat of row 2.
+     */
+    ROW_2_PASSENGER_CENTER = 1 << 4,
+    /*
+     * Occupants on right seat of row 2.
+     */
+    ROW_2_PASSENGER_RIGHT = 1 << 5,
+    /*
+     * Occupants on left seat of row 3.
+     */
+    ROW_3_PASSENGER_LEFT = 1 << 6,
+    /*
+     * Occupants on center seat of row 3.
+     */
+    ROW_3_PASSENGER_CENTER = 1 << 7,
+    /*
+     * Occupants on right seat of row 3.
+     */
+    ROW_3_PASSENGER_RIGHT = 1 << 8,
+
+    /*
+     * Occupants that the system detects as front seat occupant.
+     * FRONT_OCCUPANTS = DRIVER | FRONT_PASSENGER
+     */
+    FRONT_OCCUPANTS = 1 << 1 | 1 << 2,
+    /*
+     * Occupants of row 2.
+     * ROW_2_OCCUPANTS = ROW_2_PASSENGER_LEFT | ROW_2_PASSENGER_CENTER | ROW_2_PASSENGER_RIGHT
+     */
+    ROW_2_OCCUPANTS = 1 << 3 | 1 << 4 | 1 << 5,
+    /*
+     * Occupants of row 3.
+     * ROW_3_OCCUPANTS = ROW_3_PASSENGER_LEFT | ROW_3_PASSENGER_CENTER | ROW_3_PASSENGER_RIGHT
+     */
+    ROW_3_OCCUPANTS = 1 << 6 | 1 << 7 | 1 << 8,
+    /*
+     * All the occupants in the vehicle.
+     * ALL_OCCUPANTS = UNKNOWN | FRONT_OCCUPANTS | ROW_2_OCCUPANTS | ROW_3_OCCUPANTS
+     */
+    ALL_OCCUPANTS = 0x1FF,
+}
diff --git a/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/VehicleRegion.aidl b/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/VehicleRegion.aidl
new file mode 100644
index 0000000..9ee9d52
--- /dev/null
+++ b/automotive/occupant_awareness/aidl/android/hardware/automotive/occupant_awareness/VehicleRegion.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.automotive.occupant_awareness;
+
+@VintfStability
+@Backing(type="int")
+enum VehicleRegion {
+    /*
+     * List of targets in the car.
+     */
+    UNKNOWN = 0,
+    INSTRUMENT_CLUSTER = 1,
+    REAR_VIEW_MIRROR = 2,
+    LEFT_SIDE_MIRROR = 3,
+    RIGHT_SIDE_MIRROR = 4,
+    FORWARD_ROADWAY = 5,
+    LEFT_ROADWAY = 6,
+    RIGHT_ROADWAY = 7,
+    HEAD_UNIT_DISPLAY = 8,
+    /*
+     * Vendors can use this value along with customGazeTarget string to uniquely identify their
+     * custom region.
+     */
+    CUSTOM_TARGET = 200,
+}
diff --git a/automotive/occupant_awareness/aidl/default/Android.bp b/automotive/occupant_awareness/aidl/default/Android.bp
new file mode 100644
index 0000000..1b2fba2
--- /dev/null
+++ b/automotive/occupant_awareness/aidl/default/Android.bp
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+cc_binary {
+    name: "android.hardware.automotive.occupant_awareness@1.0-service",
+    init_rc: ["android.hardware.automotive.occupant_awareness@1.0-service.rc"],
+    relative_install_path: "hw",
+    vendor: true,
+    srcs: [
+        "service.cpp",
+        "OccupantAwareness.cpp",
+    ],
+    shared_libs: [
+        "libbase",
+        "libbinder_ndk",
+        "libutils",
+        "android.hardware.automotive.occupant_awareness-ndk_platform",
+    ],
+}
diff --git a/automotive/occupant_awareness/aidl/default/OccupantAwareness.cpp b/automotive/occupant_awareness/aidl/default/OccupantAwareness.cpp
new file mode 100644
index 0000000..a156075
--- /dev/null
+++ b/automotive/occupant_awareness/aidl/default/OccupantAwareness.cpp
@@ -0,0 +1,122 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "OccupantAwareness.h"
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace occupant_awareness {
+namespace V1_0 {
+namespace implementation {
+
+using ndk::ScopedAStatus;
+
+static const int32_t kAllCapabilities = OccupantAwareness::CAP_PRESENCE_DETECTION |
+                                        OccupantAwareness::CAP_GAZE_DETECTION |
+                                        OccupantAwareness::CAP_DRIVER_MONITORING_DETECTION;
+
+ScopedAStatus OccupantAwareness::startDetection(OccupantAwarenessStatus* status) {
+    std::lock_guard<std::mutex> lock(mMutex);
+    if (mStatus != OccupantAwarenessStatus::NOT_SUPPORTED) {
+        mStatus = OccupantAwarenessStatus::NOT_SUPPORTED;
+        if (mCallback) {
+            mCallback->onSystemStatusChanged(kAllCapabilities,
+                                             OccupantAwarenessStatus::NOT_SUPPORTED);
+        }
+    }
+    *status = mStatus;
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus OccupantAwareness::stopDetection(OccupantAwarenessStatus* status) {
+    std::lock_guard<std::mutex> lock(mMutex);
+    if (mStatus != OccupantAwarenessStatus::NOT_INITIALIZED) {
+        mStatus = OccupantAwarenessStatus::NOT_INITIALIZED;
+        if (mCallback) {
+            mCallback->onSystemStatusChanged(kAllCapabilities,
+                                             OccupantAwarenessStatus::NOT_INITIALIZED);
+        }
+    }
+    *status = mStatus;
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus OccupantAwareness::getCapabilityForRole(Role occupantRole, int32_t* capabilities) {
+    if (!isValidRole(occupantRole)) {
+        return ScopedAStatus::fromExceptionCode(EX_TRANSACTION_FAILED);
+    }
+
+    // No awareness capability for default HAL.
+    *capabilities = 0;
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus OccupantAwareness::getState(Role occupantRole, int detectionCapability,
+                                          OccupantAwarenessStatus* status) {
+    if (!isValidRole(occupantRole)) {
+        return ScopedAStatus::fromExceptionCode(EX_TRANSACTION_FAILED);
+    }
+
+    if (!isValidDetectionCapabilities(detectionCapability) ||
+        !isSingularCapability(detectionCapability)) {
+        return ScopedAStatus::fromExceptionCode(EX_TRANSACTION_FAILED);
+    }
+
+    std::lock_guard<std::mutex> lock(mMutex);
+    *status = mStatus;
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus OccupantAwareness::setCallback(
+        const std::shared_ptr<IOccupantAwarenessClientCallback>& callback) {
+    if (callback == nullptr) {
+        return ScopedAStatus::fromExceptionCode(EX_TRANSACTION_FAILED);
+    }
+
+    std::lock_guard<std::mutex> lock(mMutex);
+    mCallback = callback;
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus OccupantAwareness::getLatestDetection(OccupantDetections* detections) {
+    // No detection generated for default hal.
+    (void)detections;
+    return ScopedAStatus::fromExceptionCode(EX_TRANSACTION_FAILED);
+}
+
+bool OccupantAwareness::isValidRole(Role occupantRole) {
+    int intVal = static_cast<int>(occupantRole);
+    int allOccupants = static_cast<int>(Role::ALL_OCCUPANTS);
+    return (occupantRole != Role::INVALID) && ((intVal & (~allOccupants)) == 0);
+}
+
+bool OccupantAwareness::isValidDetectionCapabilities(int detectionCapabilities) {
+    return (detectionCapabilities != CAP_NONE) &&
+           ((detectionCapabilities & (~kAllCapabilities)) == 0);
+}
+
+bool OccupantAwareness::isSingularCapability(int detectionCapability) {
+    // Check whether the value is 0, or the value has only one bit set.
+    return (detectionCapability & (detectionCapability - 1)) == 0;
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace occupant_awareness
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/occupant_awareness/aidl/default/OccupantAwareness.h b/automotive/occupant_awareness/aidl/default/OccupantAwareness.h
new file mode 100644
index 0000000..ac51aa4
--- /dev/null
+++ b/automotive/occupant_awareness/aidl/default/OccupantAwareness.h
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+#include <aidl/android/hardware/automotive/occupant_awareness/BnOccupantAwareness.h>
+#include <aidl/android/hardware/automotive/occupant_awareness/BnOccupantAwarenessClientCallback.h>
+#include <utils/StrongPointer.h>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace occupant_awareness {
+namespace V1_0 {
+namespace implementation {
+
+using ::aidl::android::hardware::automotive::occupant_awareness::BnOccupantAwareness;
+using ::aidl::android::hardware::automotive::occupant_awareness::IOccupantAwarenessClientCallback;
+using ::aidl::android::hardware::automotive::occupant_awareness::OccupantAwarenessStatus;
+using ::aidl::android::hardware::automotive::occupant_awareness::OccupantDetections;
+using ::aidl::android::hardware::automotive::occupant_awareness::Role;
+
+/**
+ * The default HAL mimics a system which has no Occupant awareness capability. The hal does not
+ * do any useful work, and returns appropriate failure code / status.
+ **/
+class OccupantAwareness : public BnOccupantAwareness {
+  public:
+    // Methods from ::android::hardware::automotive::occupant_awareness::IOccupantAwareness
+    // follow.
+    ndk::ScopedAStatus startDetection(OccupantAwarenessStatus* status) override;
+    ndk::ScopedAStatus stopDetection(OccupantAwarenessStatus* status) override;
+    ndk::ScopedAStatus getCapabilityForRole(Role occupantRole, int32_t* capabilities) override;
+    ndk::ScopedAStatus getState(Role occupantRole, int detectionCapability,
+                                OccupantAwarenessStatus* status) override;
+    ndk::ScopedAStatus setCallback(
+            const std::shared_ptr<IOccupantAwarenessClientCallback>& callback) override;
+    ndk::ScopedAStatus getLatestDetection(OccupantDetections* detections) override;
+
+  private:
+    bool isValidRole(Role occupantRole);
+    bool isValidDetectionCapabilities(int detectionCapabilities);
+    bool isSingularCapability(int detectionCapability);
+
+    std::mutex mMutex;
+    std::shared_ptr<IOccupantAwarenessClientCallback> mCallback = nullptr;
+    OccupantAwarenessStatus mStatus = OccupantAwarenessStatus::NOT_INITIALIZED;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace occupant_awareness
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/occupant_awareness/aidl/default/android.hardware.automotive.occupant_awareness@1.0-service.rc b/automotive/occupant_awareness/aidl/default/android.hardware.automotive.occupant_awareness@1.0-service.rc
new file mode 100644
index 0000000..35d5bca
--- /dev/null
+++ b/automotive/occupant_awareness/aidl/default/android.hardware.automotive.occupant_awareness@1.0-service.rc
@@ -0,0 +1,4 @@
+service hal_occupant_awareness_default /vendor/bin/hw/android.hardware.automotive.occupant_awareness@1.0-service
+    class hal
+    user system
+    group system
diff --git a/automotive/occupant_awareness/aidl/default/service.cpp b/automotive/occupant_awareness/aidl/default/service.cpp
new file mode 100644
index 0000000..44960fb
--- /dev/null
+++ b/automotive/occupant_awareness/aidl/default/service.cpp
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "android.hardware.automotive.occupant_awareness@1.0-service"
+
+#include <unistd.h>
+
+#include <android-base/logging.h>
+#include <android/binder_manager.h>
+#include <android/binder_process.h>
+
+#include "OccupantAwareness.h"
+
+using ::aidl::android::hardware::automotive::occupant_awareness::IOccupantAwareness;
+using ::android::hardware::automotive::occupant_awareness::V1_0::implementation::OccupantAwareness;
+using ::ndk::ScopedAStatus;
+using ::ndk::SharedRefBase;
+
+const static char kOccupantAwarenessServiceName[] = "default";
+
+int main() {
+    ABinderProcess_setThreadPoolMaxThreadCount(0);
+    LOG(INFO) << "Occupant Awareness service is starting";
+    std::shared_ptr<OccupantAwareness> occupantAwareness = SharedRefBase::make<OccupantAwareness>();
+
+    const std::string instance =
+            std::string() + IOccupantAwareness::descriptor + "/" + kOccupantAwarenessServiceName;
+
+    binder_status_t status =
+            AServiceManager_addService(occupantAwareness->asBinder().get(), instance.c_str());
+    if (status == STATUS_OK) {
+        LOG(INFO) << "Service " << kOccupantAwarenessServiceName << " is ready";
+        ABinderProcess_joinThreadPool();
+    } else {
+        LOG(ERROR) << "Could not register service " << kOccupantAwarenessServiceName
+                   << ", status: " << status;
+    }
+
+    // In normal operation, we don't expect the thread pool to exit.
+    LOG(ERROR) << "Occupant Awareness service is shutting down";
+    return 1;
+}
diff --git a/automotive/occupant_awareness/aidl/mock/Android.bp b/automotive/occupant_awareness/aidl/mock/Android.bp
new file mode 100644
index 0000000..4b30866
--- /dev/null
+++ b/automotive/occupant_awareness/aidl/mock/Android.bp
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+cc_binary {
+    name: "android.hardware.automotive.occupant_awareness@1.0-service_mock",
+    relative_install_path: "hw",
+    vendor: true,
+    srcs: [
+        "service.cpp",
+        "OccupantAwareness.cpp",
+        "DetectionGenerator.cpp",
+    ],
+    shared_libs: [
+        "libbase",
+        "libbinder_ndk",
+        "libutils",
+        "android.hardware.automotive.occupant_awareness-ndk_platform",
+    ],
+}
diff --git a/automotive/occupant_awareness/aidl/mock/DetectionGenerator.cpp b/automotive/occupant_awareness/aidl/mock/DetectionGenerator.cpp
new file mode 100644
index 0000000..79d4dbc
--- /dev/null
+++ b/automotive/occupant_awareness/aidl/mock/DetectionGenerator.cpp
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <utils/SystemClock.h>
+
+#include "DetectionGenerator.h"
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace occupant_awareness {
+namespace V1_0 {
+namespace implementation {
+
+using ::aidl::android::hardware::automotive::occupant_awareness::ConfidenceLevel;
+using ::aidl::android::hardware::automotive::occupant_awareness::DriverMonitoringDetection;
+using ::aidl::android::hardware::automotive::occupant_awareness::OccupantDetection;
+using ::aidl::android::hardware::automotive::occupant_awareness::PresenceDetection;
+
+static int64_t kNanoSecondsPerMilliSecond = 1000 * 1000;
+
+OccupantDetections DetectionGenerator::GetNextDetections() {
+    OccupantDetections detections;
+    detections.timeStampMillis = android::elapsedRealtimeNano() / kNanoSecondsPerMilliSecond;
+    int remainingRoles = getSupportedRoles();
+    while (remainingRoles) {
+        int currentRole = remainingRoles & (~(remainingRoles - 1));
+        remainingRoles = remainingRoles & (remainingRoles - 1);
+
+        OccupantDetection occupantDetection;
+        occupantDetection.role = static_cast<Role>(currentRole);
+
+        // Add presence detection object for this occupant.
+        PresenceDetection presenceDetection;
+        presenceDetection.isOccupantDetected = true;
+        presenceDetection.detectionDurationMillis = detections.timeStampMillis;
+        occupantDetection.presenceData.emplace_back(presenceDetection);
+
+        if (occupantDetection.role == Role::DRIVER) {
+            // Add driver monitoring detection object for this occupant.
+            DriverMonitoringDetection driverMonitoringDetection;
+            driverMonitoringDetection.confidenceScore = ConfidenceLevel::HIGH;
+            driverMonitoringDetection.isLookingOnRoad = 0;
+            driverMonitoringDetection.gazeDurationMillis = detections.timeStampMillis;
+            occupantDetection.attentionData.emplace_back(driverMonitoringDetection);
+        }
+
+        detections.detections.emplace_back(occupantDetection);
+    }
+    return detections;
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace occupant_awareness
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/occupant_awareness/aidl/mock/DetectionGenerator.h b/automotive/occupant_awareness/aidl/mock/DetectionGenerator.h
new file mode 100644
index 0000000..0884685
--- /dev/null
+++ b/automotive/occupant_awareness/aidl/mock/DetectionGenerator.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/automotive/occupant_awareness/BnOccupantAwareness.h>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace occupant_awareness {
+namespace V1_0 {
+namespace implementation {
+
+using ::aidl::android::hardware::automotive::occupant_awareness::BnOccupantAwareness;
+using ::aidl::android::hardware::automotive::occupant_awareness::OccupantDetections;
+using ::aidl::android::hardware::automotive::occupant_awareness::Role;
+
+class DetectionGenerator {
+  public:
+    static int getSupportedRoles() {
+        return static_cast<int>(Role::DRIVER) | static_cast<int>(Role::FRONT_PASSENGER);
+    }
+    static int getSupportedCapabilities() {
+        return static_cast<int>(BnOccupantAwareness::CAP_PRESENCE_DETECTION) |
+               static_cast<int>(BnOccupantAwareness::CAP_DRIVER_MONITORING_DETECTION);
+    }
+
+    OccupantDetections GetNextDetections();
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace occupant_awareness
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/occupant_awareness/aidl/mock/OccupantAwareness.cpp b/automotive/occupant_awareness/aidl/mock/OccupantAwareness.cpp
new file mode 100644
index 0000000..910760a
--- /dev/null
+++ b/automotive/occupant_awareness/aidl/mock/OccupantAwareness.cpp
@@ -0,0 +1,176 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <utils/SystemClock.h>
+
+#include "OccupantAwareness.h"
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace occupant_awareness {
+namespace V1_0 {
+namespace implementation {
+
+using ndk::ScopedAStatus;
+
+static const int32_t kAllCapabilities = OccupantAwareness::CAP_PRESENCE_DETECTION |
+                                        OccupantAwareness::CAP_GAZE_DETECTION |
+                                        OccupantAwareness::CAP_DRIVER_MONITORING_DETECTION;
+
+constexpr int64_t kNanoSecondsPerMilliSecond = 1000 * 1000;
+
+ScopedAStatus OccupantAwareness::startDetection(OccupantAwarenessStatus* status) {
+    std::lock_guard<std::mutex> lock(mMutex);
+    if (mStatus != OccupantAwarenessStatus::NOT_INITIALIZED) {
+        return ScopedAStatus::fromExceptionCode(EX_TRANSACTION_FAILED);
+    }
+
+    mStatus = OccupantAwarenessStatus::READY;
+    mWorkerThread = std::thread(startWorkerThread, this);
+    if (mCallback) {
+        mCallback->onSystemStatusChanged(kAllCapabilities, mStatus);
+    }
+
+    *status = mStatus;
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus OccupantAwareness::stopDetection(OccupantAwarenessStatus* status) {
+    std::lock_guard<std::mutex> lock(mMutex);
+    if (mStatus != OccupantAwarenessStatus::READY) {
+        return ScopedAStatus::fromExceptionCode(EX_TRANSACTION_FAILED);
+    }
+
+    mStatus = OccupantAwarenessStatus::NOT_INITIALIZED;
+    mWorkerThread.join();
+    if (mCallback) {
+        mCallback->onSystemStatusChanged(kAllCapabilities, mStatus);
+    }
+
+    *status = mStatus;
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus OccupantAwareness::getCapabilityForRole(Role occupantRole, int32_t* capabilities) {
+    if (!isValidRole(occupantRole)) {
+        return ScopedAStatus::fromExceptionCode(EX_TRANSACTION_FAILED);
+    }
+
+    int intVal = static_cast<int>(occupantRole);
+    if ((intVal & DetectionGenerator::getSupportedRoles()) == intVal) {
+        int capabilities_ = DetectionGenerator::getSupportedCapabilities();
+        if (occupantRole != Role::DRIVER) {
+            capabilities_ &= ~CAP_DRIVER_MONITORING_DETECTION;
+        }
+        *capabilities = capabilities_;
+    } else {
+        *capabilities = 0;
+    }
+
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus OccupantAwareness::getState(Role occupantRole, int detectionCapability,
+                                          OccupantAwarenessStatus* status) {
+    if (!isValidRole(occupantRole)) {
+        return ScopedAStatus::fromExceptionCode(EX_TRANSACTION_FAILED);
+    }
+
+    if (!isValidDetectionCapabilities(detectionCapability) ||
+        !isSingularCapability(detectionCapability)) {
+        return ScopedAStatus::fromExceptionCode(EX_TRANSACTION_FAILED);
+    }
+
+    int roleVal = static_cast<int>(occupantRole);
+
+    if (((roleVal & DetectionGenerator::getSupportedRoles()) != roleVal) ||
+        ((detectionCapability & DetectionGenerator::getSupportedCapabilities()) !=
+         detectionCapability)) {
+        *status = OccupantAwarenessStatus::NOT_SUPPORTED;
+        return ScopedAStatus::ok();
+    }
+
+    std::lock_guard<std::mutex> lock(mMutex);
+    *status = mStatus;
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus OccupantAwareness::setCallback(
+        const std::shared_ptr<IOccupantAwarenessClientCallback>& callback) {
+    if (callback == nullptr) {
+        return ScopedAStatus::fromExceptionCode(EX_TRANSACTION_FAILED);
+    }
+
+    std::lock_guard<std::mutex> lock(mMutex);
+    mCallback = callback;
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus OccupantAwareness::getLatestDetection(OccupantDetections* detections) {
+    std::lock_guard<std::mutex> lock(mMutex);
+
+    if (mStatus != OccupantAwarenessStatus::READY) {
+        return ScopedAStatus::fromExceptionCode(EX_TRANSACTION_FAILED);
+    }
+
+    *detections = mLatestDetections;
+    return ScopedAStatus::ok();
+}
+
+bool OccupantAwareness::isValidRole(Role occupantRole) {
+    int intVal = static_cast<int>(occupantRole);
+    int allOccupants = static_cast<int>(Role::ALL_OCCUPANTS);
+    return (occupantRole != Role::INVALID) && ((intVal & (~allOccupants)) == 0);
+}
+
+bool OccupantAwareness::isValidDetectionCapabilities(int detectionCapabilities) {
+    return (detectionCapabilities != OccupantAwareness::CAP_NONE) &&
+           ((detectionCapabilities & (~kAllCapabilities)) == 0);
+}
+
+bool OccupantAwareness::isSingularCapability(int detectionCapability) {
+    // Check whether the value is 0, or the value has only one bit set.
+    return (detectionCapability & (detectionCapability - 1)) == 0;
+}
+
+void OccupantAwareness::startWorkerThread(OccupantAwareness* occupantAwareness) {
+    occupantAwareness->workerThreadFunction();
+}
+
+void OccupantAwareness::workerThreadFunction() {
+    bool isFirstDetection = true;
+    int64_t prevDetectionTimeMs;
+    while (mStatus == OccupantAwarenessStatus::READY) {
+        int64_t currentTimeMs = android::elapsedRealtimeNano() / kNanoSecondsPerMilliSecond;
+        if ((isFirstDetection) || (currentTimeMs - prevDetectionTimeMs > mDetectionDurationMs)) {
+            std::lock_guard<std::mutex> lock(mMutex);
+            mLatestDetections = mGenerator.GetNextDetections();
+            if (mCallback != nullptr) {
+                mCallback->onDetectionEvent(mLatestDetections);
+            }
+            isFirstDetection = false;
+            prevDetectionTimeMs = currentTimeMs;
+        }
+    }
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace occupant_awareness
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/occupant_awareness/aidl/mock/OccupantAwareness.h b/automotive/occupant_awareness/aidl/mock/OccupantAwareness.h
new file mode 100644
index 0000000..c5f6dd6
--- /dev/null
+++ b/automotive/occupant_awareness/aidl/mock/OccupantAwareness.h
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <thread>
+
+#include <aidl/android/hardware/automotive/occupant_awareness/BnOccupantAwareness.h>
+#include <aidl/android/hardware/automotive/occupant_awareness/BnOccupantAwarenessClientCallback.h>
+#include <utils/StrongPointer.h>
+
+#include "DetectionGenerator.h"
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace occupant_awareness {
+namespace V1_0 {
+namespace implementation {
+
+using ::aidl::android::hardware::automotive::occupant_awareness::BnOccupantAwareness;
+using ::aidl::android::hardware::automotive::occupant_awareness::IOccupantAwarenessClientCallback;
+using ::aidl::android::hardware::automotive::occupant_awareness::OccupantAwarenessStatus;
+using ::aidl::android::hardware::automotive::occupant_awareness::OccupantDetections;
+using ::aidl::android::hardware::automotive::occupant_awareness::Role;
+
+/**
+ * The mock HAL can detect presence of Driver and front passenger, and driver awareness detection
+ * for driver.
+ **/
+class OccupantAwareness : public BnOccupantAwareness {
+  public:
+    // Methods from ::android::hardware::automotive::occupant_awareness::IOccupantAwareness
+    // follow.
+    ndk::ScopedAStatus startDetection(OccupantAwarenessStatus* status) override;
+    ndk::ScopedAStatus stopDetection(OccupantAwarenessStatus* status) override;
+    ndk::ScopedAStatus getCapabilityForRole(Role occupantRole, int32_t* capabilities) override;
+    ndk::ScopedAStatus getState(Role occupantRole, int detectionCapability,
+                                OccupantAwarenessStatus* status) override;
+    ndk::ScopedAStatus setCallback(
+            const std::shared_ptr<IOccupantAwarenessClientCallback>& callback) override;
+    ndk::ScopedAStatus getLatestDetection(OccupantDetections* detections) override;
+
+  private:
+    bool isValidRole(Role occupantRole);
+    bool isValidDetectionCapabilities(int detectionCapabilities);
+    bool isSingularCapability(int detectionCapability);
+
+    void workerThreadFunction();
+    static void startWorkerThread(OccupantAwareness* occupantAwareness);
+
+    std::mutex mMutex;
+    std::shared_ptr<IOccupantAwarenessClientCallback> mCallback = nullptr;
+    OccupantAwarenessStatus mStatus = OccupantAwarenessStatus::NOT_INITIALIZED;
+
+    OccupantDetections mLatestDetections;
+    std::thread mWorkerThread;
+
+    DetectionGenerator mGenerator;
+
+    // Generate a new detection every 1ms.
+    const int64_t mDetectionDurationMs = 1;
+};
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace occupant_awareness
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/occupant_awareness/aidl/mock/service.cpp b/automotive/occupant_awareness/aidl/mock/service.cpp
new file mode 100644
index 0000000..d8860df
--- /dev/null
+++ b/automotive/occupant_awareness/aidl/mock/service.cpp
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "android.hardware.automotive.occupant_awareness@1.0-service_mock"
+
+#include <unistd.h>
+
+#include <android-base/logging.h>
+#include <android/binder_manager.h>
+#include <android/binder_process.h>
+
+#include "OccupantAwareness.h"
+
+using ::aidl::android::hardware::automotive::occupant_awareness::IOccupantAwareness;
+using ::android::hardware::automotive::occupant_awareness::V1_0::implementation::OccupantAwareness;
+using ::ndk::ScopedAStatus;
+using ::ndk::SharedRefBase;
+
+const static char kOccupantAwarenessServiceName[] = "default";
+
+int main() {
+    ABinderProcess_setThreadPoolMaxThreadCount(0);
+    LOG(INFO) << "Occupant Awareness service is starting";
+    std::shared_ptr<OccupantAwareness> occupantAwareness = SharedRefBase::make<OccupantAwareness>();
+
+    const std::string instance =
+            std::string() + IOccupantAwareness::descriptor + "/" + kOccupantAwarenessServiceName;
+
+    binder_status_t status =
+            AServiceManager_addService(occupantAwareness->asBinder().get(), instance.c_str());
+    if (status == STATUS_OK) {
+        LOG(INFO) << "Service " << kOccupantAwarenessServiceName << " is ready";
+        ABinderProcess_joinThreadPool();
+    } else {
+        LOG(ERROR) << "Could not register service " << kOccupantAwarenessServiceName
+                   << ", status: " << status;
+    }
+
+    // In normal operation, we don't expect the thread pool to exit.
+    LOG(ERROR) << "Occupant Awareness service is shutting down";
+    return 1;
+}
diff --git a/automotive/occupant_awareness/aidl/vts/functional/Android.bp b/automotive/occupant_awareness/aidl/vts/functional/Android.bp
new file mode 100644
index 0000000..1256b69
--- /dev/null
+++ b/automotive/occupant_awareness/aidl/vts/functional/Android.bp
@@ -0,0 +1,17 @@
+cc_test {
+    name: "VtsHalOccupantAwarenessV1_0TargetTest",
+    defaults: [
+        "VtsHalTargetTestDefaults",
+        "use_libaidlvintf_gtest_helper_static",
+    ],
+    srcs: ["VtsHalOccupantAwarenessV1_0TargetTest.cpp"],
+    shared_libs: [
+        "libbinder",
+    ],
+    static_libs: [
+        "android.hardware.automotive.occupant_awareness-cpp",
+    ],
+    test_suites: [
+        "vts-core",
+    ],
+}
diff --git a/automotive/occupant_awareness/aidl/vts/functional/VtsHalOccupantAwarenessV1_0TargetTest.cpp b/automotive/occupant_awareness/aidl/vts/functional/VtsHalOccupantAwarenessV1_0TargetTest.cpp
new file mode 100644
index 0000000..c431f9d
--- /dev/null
+++ b/automotive/occupant_awareness/aidl/vts/functional/VtsHalOccupantAwarenessV1_0TargetTest.cpp
@@ -0,0 +1,203 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "**** HAL log ****"
+
+#include <aidl/Gtest.h>
+#include <aidl/Vintf.h>
+#include <android-base/logging.h>
+#include <android/hardware/automotive/occupant_awareness/BnOccupantAwarenessClientCallback.h>
+#include <android/hardware/automotive/occupant_awareness/IOccupantAwareness.h>
+#include <binder/IServiceManager.h>
+#include <binder/ProcessState.h>
+#include <gtest/gtest.h>
+
+#include <chrono>
+#include <future>
+#include <vector>
+
+using namespace android::hardware::automotive::occupant_awareness;
+using android::hardware::automotive::occupant_awareness::IOccupantAwareness;
+
+using android::ProcessState;
+using android::sp;
+using android::String16;
+using android::binder::Status;
+
+constexpr auto kTimeout = std::chrono::seconds(3);
+
+#define EXPECT_OK(ret) ASSERT_TRUE((ret).isOk())
+
+class OccupantAwarenessCallback : public BnOccupantAwarenessClientCallback {
+  public:
+    OccupantAwarenessCallback(const std::function<void(int, OccupantAwarenessStatus)>& callback)
+        : mCallback(callback) {}
+    Status onSystemStatusChanged(int detectionFlags, OccupantAwarenessStatus status) override {
+        mCallback(detectionFlags, status);
+        return Status::ok();
+    }
+
+    Status onDetectionEvent(const OccupantDetections& detections) override {
+        (void)detections;
+        return Status::ok();
+    }
+
+  private:
+    std::function<void(int, OccupantAwarenessStatus)> mCallback;
+};
+
+class OccupantAwarenessAidl : public testing::TestWithParam<std::string> {
+  public:
+    virtual void SetUp() override {
+        mOccupantAwarenessService =
+                android::waitForDeclaredService<IOccupantAwareness>(String16(GetParam().c_str()));
+        ASSERT_NE(mOccupantAwarenessService, nullptr);
+    }
+
+    sp<IOccupantAwareness> mOccupantAwarenessService;
+};
+
+// Test that startDetection() returns within the timeout.
+TEST_P(OccupantAwarenessAidl, StartDetectionTest) {
+    auto start = std::chrono::system_clock::now();
+    OccupantAwarenessStatus occupantAwarenessStatus;
+    Status status = mOccupantAwarenessService->startDetection(&occupantAwarenessStatus);
+    auto elapsed = std::chrono::system_clock::now() - start;
+    EXPECT_OK(status);
+    ASSERT_LE(elapsed, kTimeout);
+
+    EXPECT_OK(mOccupantAwarenessService->stopDetection(&occupantAwarenessStatus));
+}
+
+// Test that getCapabilityForRole() returns supported capabilities for the role. The test only
+// verifies that the IPC call returns successfully and does not verify the supported capabilities.
+TEST_P(OccupantAwarenessAidl, GetCapabilityTest) {
+    std::vector<Role> rolesToTest = {Role::FRONT_PASSENGER,        Role::DRIVER,
+                                     Role::ROW_2_PASSENGER_LEFT,   Role::ROW_2_PASSENGER_CENTER,
+                                     Role::ROW_2_PASSENGER_RIGHT,  Role::ROW_3_PASSENGER_LEFT,
+                                     Role::ROW_3_PASSENGER_CENTER, Role::ROW_3_PASSENGER_RIGHT,
+                                     Role::FRONT_OCCUPANTS,        Role::ROW_2_OCCUPANTS,
+                                     Role::ROW_3_OCCUPANTS,        Role::ALL_OCCUPANTS};
+
+    for (auto role : rolesToTest) {
+        int32_t capabilities;
+        EXPECT_OK(mOccupantAwarenessService->getCapabilityForRole(role, &capabilities));
+    }
+}
+
+// Test that getCapabilityForRole() returns failure when arguments are invalid.
+TEST_P(OccupantAwarenessAidl, GetCapabilityFailureTest) {
+    int32_t capabilities;
+    EXPECT_FALSE(
+            mOccupantAwarenessService->getCapabilityForRole(Role::INVALID, &capabilities).isOk());
+
+    Role invalidRole = static_cast<Role>(static_cast<int>(Role::ALL_OCCUPANTS) + 1);
+    EXPECT_FALSE(
+            mOccupantAwarenessService->getCapabilityForRole(invalidRole, &capabilities).isOk());
+}
+
+// Test that getState() returns within the timeout. The test do not attempt to verify the state, but
+// only checks that the IPC call returns successfully.
+TEST_P(OccupantAwarenessAidl, GetStateTest) {
+    std::vector<Role> rolesToTest = {Role::FRONT_PASSENGER,        Role::DRIVER,
+                                     Role::ROW_2_PASSENGER_LEFT,   Role::ROW_2_PASSENGER_CENTER,
+                                     Role::ROW_2_PASSENGER_RIGHT,  Role::ROW_3_PASSENGER_LEFT,
+                                     Role::ROW_3_PASSENGER_CENTER, Role::ROW_3_PASSENGER_RIGHT,
+                                     Role::FRONT_OCCUPANTS,        Role::ROW_2_OCCUPANTS,
+                                     Role::ROW_3_OCCUPANTS,        Role::ALL_OCCUPANTS};
+
+    std::vector<int> detectionCapabilities = {IOccupantAwareness::CAP_PRESENCE_DETECTION,
+                                              IOccupantAwareness::CAP_GAZE_DETECTION,
+                                              IOccupantAwareness::CAP_DRIVER_MONITORING_DETECTION};
+
+    for (auto role : rolesToTest) {
+        for (auto detectionCapability : detectionCapabilities) {
+            OccupantAwarenessStatus oasStatus;
+            EXPECT_OK(mOccupantAwarenessService->getState(role, detectionCapability, &oasStatus));
+        }
+    }
+}
+
+// Test that getState() returns failure with invalid args.
+TEST_P(OccupantAwarenessAidl, GetStateFailureTest) {
+    // Verify that getState() returns error when role is invalid (0).
+    OccupantAwarenessStatus oasStatus;
+    EXPECT_FALSE(mOccupantAwarenessService
+                         ->getState(Role::INVALID, IOccupantAwareness::CAP_PRESENCE_DETECTION,
+                                    &oasStatus)
+                         .isOk());
+
+    // Verify that getState() returns error when role is invalid (invalid flag).
+    int invalidRole = static_cast<int>(Role::ALL_OCCUPANTS) + 1;
+    EXPECT_FALSE(mOccupantAwarenessService
+                         ->getState(static_cast<Role>(invalidRole),
+                                    IOccupantAwareness::CAP_PRESENCE_DETECTION, &oasStatus)
+                         .isOk());
+
+    // Verify that getState() returns error when capability is invalid (none).
+    EXPECT_FALSE(mOccupantAwarenessService
+                         ->getState(Role::FRONT_PASSENGER, IOccupantAwareness::CAP_NONE, &oasStatus)
+                         .isOk());
+
+    // Verify that getState() returns error when capability is invalid (invalid flag).
+    int invalidDetectionFlags = 0x10;
+    EXPECT_FALSE(mOccupantAwarenessService
+                         ->getState(Role::FRONT_PASSENGER, invalidDetectionFlags, &oasStatus)
+                         .isOk());
+}
+
+// Test that setCallback() returns within the timeout.
+TEST_P(OccupantAwarenessAidl, SetCallbackTest) {
+    sp<OccupantAwarenessCallback> callback =
+            new OccupantAwarenessCallback([](int detectionFlags, OccupantAwarenessStatus status) {
+                (void)detectionFlags;
+                (void)status;
+            });
+    auto start = std::chrono::system_clock::now();
+    Status status = mOccupantAwarenessService->setCallback(callback);
+    auto elapsed = std::chrono::system_clock::now() - start;
+    EXPECT_OK(status);
+    ASSERT_LE(elapsed, kTimeout);
+}
+
+// Test that setCallback() returns failure with invalid args.
+TEST_P(OccupantAwarenessAidl, SetCallbackFailureTest) {
+    sp<OccupantAwarenessCallback> callback = nullptr;
+    Status status = mOccupantAwarenessService->setCallback(callback);
+    EXPECT_FALSE(status.isOk());
+}
+
+// Test that getLatestDetection() returns within the timeout.
+TEST_P(OccupantAwarenessAidl, GetLatestDetectionTest) {
+    auto start = std::chrono::system_clock::now();
+    OccupantDetections detections;
+    // Do not check status here, since error status is returned when no detection is present.
+    (void)mOccupantAwarenessService->getLatestDetection(&detections);
+    auto elapsed = std::chrono::system_clock::now() - start;
+    ASSERT_LE(elapsed, kTimeout);
+}
+
+INSTANTIATE_TEST_SUITE_P(
+        InstantiationName, OccupantAwarenessAidl,
+        testing::ValuesIn(android::getAidlHalInstanceNames(IOccupantAwareness::descriptor)),
+        android::PrintInstanceNameToString);
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    ProcessState::self()->setThreadPoolMaxThreadCount(1);
+    ProcessState::self()->startThreadPool();
+    return RUN_ALL_TESTS();
+}
diff --git a/automotive/vehicle/2.0/default/Android.bp b/automotive/vehicle/2.0/default/Android.bp
index ed09859..a94a37e 100644
--- a/automotive/vehicle/2.0/default/Android.bp
+++ b/automotive/vehicle/2.0/default/Android.bp
@@ -58,9 +58,11 @@
     defaults: ["vhal_v2_0_defaults"],
     srcs: [
         "impl/vhal_v2_0/CommConn.cpp",
+        "impl/vhal_v2_0/EmulatedVehicleConnector.cpp",
         "impl/vhal_v2_0/EmulatedVehicleHal.cpp",
         "impl/vhal_v2_0/VehicleEmulator.cpp",
         "impl/vhal_v2_0/PipeComm.cpp",
+        "impl/vhal_v2_0/ProtoMessageConverter.cpp",
         "impl/vhal_v2_0/SocketComm.cpp",
         "impl/vhal_v2_0/LinearFakeValueGenerator.cpp",
         "impl/vhal_v2_0/JsonFakeValueGenerator.cpp",
@@ -80,6 +82,20 @@
     ],
 }
 
+// VHal virtualization utils
+cc_library_static {
+    name: "android.hardware.automotive.vehicle@2.0-virtualization-utils",
+    vendor: true,
+    defaults: ["vhal_v2_0_defaults"],
+    srcs: [
+        "impl/vhal_v2_0/virtualization/Utils.cpp",
+    ],
+    export_include_dirs: ["impl"],
+    shared_libs: [
+        "libbase",
+    ],
+}
+
 cc_test {
     name: "android.hardware.automotive.vehicle@2.0-manager-unit-tests",
     vendor: true,
@@ -97,6 +113,21 @@
     test_suites: ["general-tests"],
 }
 
+cc_test {
+    name: "android.hardware.automotive.vehicle@2.0-default-impl-unit-tests",
+    vendor: true,
+    defaults: ["vhal_v2_0_defaults"],
+    srcs: [
+        "impl/vhal_v2_0/tests/ProtoMessageConverter_test.cpp",
+    ],
+    static_libs: [
+        "android.hardware.automotive.vehicle@2.0-default-impl-lib",
+        "android.hardware.automotive.vehicle@2.0-libproto-native",
+        "libprotobuf-cpp-lite",
+    ],
+    test_suites: ["general-tests"],
+}
+
 cc_binary {
     name: "android.hardware.automotive.vehicle@2.0-service",
     defaults: ["vhal_v2_0_defaults"],
@@ -116,3 +147,59 @@
         "libqemu_pipe",
     ],
 }
+
+cc_binary {
+    name: "android.hardware.automotive.vehicle@2.0-virtualization-service",
+    defaults: ["vhal_v2_0_defaults"],
+    init_rc: ["android.hardware.automotive.vehicle@2.0-virtualization-service.rc"],
+    vendor: true,
+    relative_install_path: "hw",
+    srcs: [
+        "impl/vhal_v2_0/virtualization/GrpcVehicleClient.cpp",
+        "VirtualizedVehicleService.cpp",
+    ],
+    shared_libs: [
+        "libbase",
+        "libcutils",
+        "libjsoncpp",
+        "libprotobuf-cpp-full",
+        "libgrpc++",
+    ],
+    static_libs: [
+        "android.hardware.automotive.vehicle@2.0-manager-lib",
+        "android.hardware.automotive.vehicle@2.0-default-impl-lib",
+        "android.hardware.automotive.vehicle@2.0-grpc",
+        "android.hardware.automotive.vehicle@2.0-virtualization-utils",
+        "libqemu_pipe",
+    ],
+    cflags: [
+        "-Wno-unused-parameter"
+    ],
+}
+
+cc_binary {
+    name: "android.hardware.automotive.vehicle@2.0-virtualization-grpc-server",
+    init_rc: ["android.hardware.automotive.vehicle@2.0-virtualization-grpc-server.rc"],
+    defaults: ["vhal_v2_0_defaults"],
+    vendor: true,
+    relative_install_path: "hw",
+    srcs: [
+        "impl/vhal_v2_0/virtualization/GrpcVehicleServer.cpp",
+        "VirtualizationGrpcServer.cpp",
+    ],
+    shared_libs: [
+        "libbase",
+        "libjsoncpp",
+        "libprotobuf-cpp-full",
+        "libgrpc++",
+    ],
+    static_libs: [
+        "android.hardware.automotive.vehicle@2.0-manager-lib",
+        "android.hardware.automotive.vehicle@2.0-default-impl-lib",
+        "android.hardware.automotive.vehicle@2.0-grpc",
+        "android.hardware.automotive.vehicle@2.0-virtualization-utils",
+    ],
+    cflags: [
+        "-Wno-unused-parameter"
+    ],
+}
diff --git a/automotive/vehicle/2.0/default/VehicleService.cpp b/automotive/vehicle/2.0/default/VehicleService.cpp
index d1fd555..127eb98 100644
--- a/automotive/vehicle/2.0/default/VehicleService.cpp
+++ b/automotive/vehicle/2.0/default/VehicleService.cpp
@@ -20,8 +20,9 @@
 
 #include <iostream>
 
-#include <vhal_v2_0/VehicleHalManager.h>
+#include <vhal_v2_0/EmulatedVehicleConnector.h>
 #include <vhal_v2_0/EmulatedVehicleHal.h>
+#include <vhal_v2_0/VehicleHalManager.h>
 
 using namespace android;
 using namespace android::hardware;
@@ -29,9 +30,11 @@
 
 int main(int /* argc */, char* /* argv */ []) {
     auto store = std::make_unique<VehiclePropertyStore>();
-    auto hal = std::make_unique<impl::EmulatedVehicleHal>(store.get());
+    auto connector = impl::makeEmulatedPassthroughConnector();
+    auto hal = std::make_unique<impl::EmulatedVehicleHal>(store.get(), connector.get());
     auto emulator = std::make_unique<impl::VehicleEmulator>(hal.get());
     auto service = std::make_unique<VehicleHalManager>(hal.get());
+    connector->setValuePool(hal->getValuePool());
 
     configureRpcThreadpool(4, true /* callerWillJoin */);
 
diff --git a/automotive/vehicle/2.0/default/VirtualizationGrpcServer.cpp b/automotive/vehicle/2.0/default/VirtualizationGrpcServer.cpp
new file mode 100644
index 0000000..cca65d9
--- /dev/null
+++ b/automotive/vehicle/2.0/default/VirtualizationGrpcServer.cpp
@@ -0,0 +1,49 @@
+#include <android-base/logging.h>
+#include <getopt.h>
+#include <unistd.h>
+
+#include "vhal_v2_0/virtualization/GrpcVehicleServer.h"
+#include "vhal_v2_0/virtualization/Utils.h"
+
+int main(int argc, char* argv[]) {
+    namespace vhal_impl = android::hardware::automotive::vehicle::V2_0::impl;
+
+    vhal_impl::VsockServerInfo serverInfo;
+
+    // unique values to identify the options
+    constexpr int OPT_VHAL_SERVER_CID = 1001;
+    constexpr int OPT_VHAL_SERVER_PORT_NUMBER = 1002;
+
+    struct option longOptions[] = {
+            {"server_cid", 1, 0, OPT_VHAL_SERVER_CID},
+            {"server_port", 1, 0, OPT_VHAL_SERVER_PORT_NUMBER},
+            {nullptr, 0, nullptr, 0},
+    };
+
+    int optValue;
+    while ((optValue = getopt_long_only(argc, argv, ":", longOptions, 0)) != -1) {
+        switch (optValue) {
+            case OPT_VHAL_SERVER_CID:
+                serverInfo.serverCid = std::atoi(optarg);
+                LOG(DEBUG) << "Vehicle HAL server CID: " << serverInfo.serverCid;
+                break;
+            case OPT_VHAL_SERVER_PORT_NUMBER:
+                serverInfo.serverPort = std::atoi(optarg);
+                LOG(DEBUG) << "Vehicle HAL server port: " << serverInfo.serverPort;
+                break;
+            default:
+                // ignore other options
+                break;
+        }
+    }
+
+    if (serverInfo.serverCid == 0 || serverInfo.serverPort == 0) {
+        LOG(FATAL) << "Invalid server information, CID: " << serverInfo.serverCid
+                   << "; port: " << serverInfo.serverPort;
+        // Will abort after logging
+    }
+
+    auto server = vhal_impl::makeGrpcVehicleServer(vhal_impl::getVsockUri(serverInfo));
+    server->Start();
+    return 0;
+}
diff --git a/automotive/vehicle/2.0/default/VirtualizedVehicleService.cpp b/automotive/vehicle/2.0/default/VirtualizedVehicleService.cpp
new file mode 100644
index 0000000..1de81ae
--- /dev/null
+++ b/automotive/vehicle/2.0/default/VirtualizedVehicleService.cpp
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <cutils/properties.h>
+#include <hidl/HidlTransportSupport.h>
+
+#include <vhal_v2_0/EmulatedVehicleConnector.h>
+#include <vhal_v2_0/EmulatedVehicleHal.h>
+#include <vhal_v2_0/VehicleHalManager.h>
+#include <vhal_v2_0/virtualization/GrpcVehicleClient.h>
+#include <vhal_v2_0/virtualization/Utils.h>
+
+using namespace android;
+using namespace android::hardware;
+using namespace android::hardware::automotive::vehicle::V2_0;
+
+int main(int argc, char* argv[]) {
+    constexpr const char* VHAL_SERVER_CID_PROPERTY_KEY = "ro.vendor.vehiclehal.server.cid";
+    constexpr const char* VHAL_SERVER_PORT_PROPERTY_KEY = "ro.vendor.vehiclehal.server.port";
+
+    auto property_get_uint = [](const char* key, unsigned int default_value) {
+        auto value = property_get_int64(key, default_value);
+        if (value < 0 || value > UINT_MAX) {
+            LOG(DEBUG) << key << ": " << value << " is out of bound, using default value '"
+                       << default_value << "' instead";
+            return default_value;
+        }
+        return static_cast<unsigned int>(value);
+    };
+
+    impl::VsockServerInfo serverInfo{property_get_uint(VHAL_SERVER_CID_PROPERTY_KEY, 0),
+                                     property_get_uint(VHAL_SERVER_PORT_PROPERTY_KEY, 0)};
+
+    if (serverInfo.serverCid == 0 || serverInfo.serverPort == 0) {
+        LOG(FATAL) << "Invalid server information, CID: " << serverInfo.serverCid
+                   << "; port: " << serverInfo.serverPort;
+        // Will abort after logging
+    }
+
+    auto store = std::make_unique<VehiclePropertyStore>();
+    auto connector = impl::makeGrpcVehicleClient(impl::getVsockUri(serverInfo));
+    auto hal = std::make_unique<impl::EmulatedVehicleHal>(store.get(), connector.get());
+    auto emulator = std::make_unique<impl::VehicleEmulator>(hal.get());
+    auto service = std::make_unique<VehicleHalManager>(hal.get());
+
+    configureRpcThreadpool(4, true /* callerWillJoin */);
+
+    LOG(INFO) << "Registering as service...";
+    status_t status = service->registerAsService();
+
+    if (status != OK) {
+        LOG(ERROR) << "Unable to register vehicle service (" << status << ")";
+        return 1;
+    }
+
+    LOG(INFO) << "Ready";
+    joinRpcThreadpool();
+
+    return 1;
+}
diff --git a/automotive/vehicle/2.0/default/android.hardware.automotive.vehicle@2.0-virtualization-grpc-server.rc b/automotive/vehicle/2.0/default/android.hardware.automotive.vehicle@2.0-virtualization-grpc-server.rc
new file mode 100644
index 0000000..29147ad
--- /dev/null
+++ b/automotive/vehicle/2.0/default/android.hardware.automotive.vehicle@2.0-virtualization-grpc-server.rc
@@ -0,0 +1,10 @@
+# It is an interim state to run GRPC server as an Android service.
+# Eventually it will run outside of Android (e.g., AGL),
+# so the command line arguments are expected, though not conventionally used in Android
+service vendor.vehicle-hal-2.0-server \
+        /vendor/bin/hw/android.hardware.automotive.vehicle@2.0-virtualization-grpc-server \
+        -server_cid ${ro.vendor.vehiclehal.server.cid:-0} \
+        -server_port ${ro.vendor.vehiclehal.server.port:-0}
+    class hal
+    user vehicle_network
+    group system inet
diff --git a/automotive/vehicle/2.0/default/android.hardware.automotive.vehicle@2.0-virtualization-service.rc b/automotive/vehicle/2.0/default/android.hardware.automotive.vehicle@2.0-virtualization-service.rc
new file mode 100644
index 0000000..234de59
--- /dev/null
+++ b/automotive/vehicle/2.0/default/android.hardware.automotive.vehicle@2.0-virtualization-service.rc
@@ -0,0 +1,4 @@
+service vendor.vehicle-hal-2.0 /vendor/bin/hw/android.hardware.automotive.vehicle@2.0-virtualization-service
+    class hal
+    user vehicle_network
+    group system inet
diff --git a/automotive/vehicle/2.0/default/common/include/vhal_v2_0/VehicleConnector.h b/automotive/vehicle/2.0/default/common/include/vhal_v2_0/VehicleConnector.h
new file mode 100644
index 0000000..d40f122
--- /dev/null
+++ b/automotive/vehicle/2.0/default/common/include/vhal_v2_0/VehicleConnector.h
@@ -0,0 +1,149 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef android_hardware_automotive_vehicle_V2_0_VehicleConnector_H_
+#define android_hardware_automotive_vehicle_V2_0_VehicleConnector_H_
+
+#include <vector>
+
+#include <android/hardware/automotive/vehicle/2.0/types.h>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace vehicle {
+namespace V2_0 {
+
+/**
+ *  This file defines the interface of client/server pair for HAL-vehicle
+ *  communication. Vehicle HAL may use this interface to talk to the vehicle
+ *  regardless of the underlying communication channels.
+ */
+
+/**
+ *  Vehicle HAL talks to the vehicle through a client, instead of accessing
+ *  the car bus directly, to give us more flexibility on the implementation.
+ *  Android OS do not need direct access to the vehicle, and the communication
+ *  channel is also customizable.
+ *
+ *  Client lives on the Android (HAL) side to talk to the vehicle
+ */
+class IVehicleClient {
+  public:
+    IVehicleClient() = default;
+
+    IVehicleClient(const IVehicleClient&) = delete;
+
+    IVehicleClient& operator=(const IVehicleClient&) = delete;
+
+    IVehicleClient(IVehicleClient&&) = default;
+
+    virtual ~IVehicleClient() = default;
+
+    // Get configuration of all properties from server
+    virtual std::vector<VehiclePropConfig> getAllPropertyConfig() const = 0;
+
+    // Send the set property request to server
+    // updateStatus indicate if VHal should change the status of the value
+    // it should be false except injecting values for e2e tests
+    virtual StatusCode setProperty(const VehiclePropValue& value, bool updateStatus) = 0;
+
+    // Receive a new property value from server
+    // updateStatus is true if and only if the value is
+    // generated by car (ECU/fake generator/injected)
+    virtual void onPropertyValue(const VehiclePropValue& value, bool updateStatus) = 0;
+};
+
+/**
+ *  Server lives on the vehicle side to talk to Android HAL
+ */
+class IVehicleServer {
+  public:
+    IVehicleServer() = default;
+
+    IVehicleServer(const IVehicleServer&) = delete;
+
+    IVehicleServer& operator=(const IVehicleServer&) = delete;
+
+    IVehicleServer(IVehicleServer&&) = default;
+
+    virtual ~IVehicleServer() = default;
+
+    // Receive the get property configuration request from HAL.
+    // Return a list of all property config
+    virtual std::vector<VehiclePropConfig> onGetAllPropertyConfig() const = 0;
+
+    // Receive the set property request from HAL.
+    // Process the setting and return the status code
+    // updateStatus indicate if VHal should change the status of the value
+    // it should be false except injecting values for e2e tests
+    virtual StatusCode onSetProperty(const VehiclePropValue& value, bool updateStatus) = 0;
+
+    // Receive a new property value from car (via direct connection to the car bus or the emulator)
+    // and forward the value to HAL
+    // updateStatus is true if and only if the value is
+    // generated by car (ECU/fake generator/injected)
+    virtual void onPropertyValueFromCar(const VehiclePropValue& value, bool updateStatus) = 0;
+};
+
+/**
+ *  If Android has direct access to the vehicle, then the client and
+ *  the server may act in passthrough mode to avoid extra IPC
+ *
+ *  Template is used here for spliting the logic of operating Android objects (VehicleClientType),
+ *  talking to cars (VehicleServerType) and the commucation between client and server (passthrough
+ *  mode in this case), so that we can easily combine different parts together without duplicating
+ *  codes (for example, in Google VHAL, the server talks to the fake car in the same way no matter
+ *  if it is on top of passthrough connector or VSOCK or any other communication channels between
+ *  client and server)
+ *
+ *  The alternative may be factoring the common logic of every operations for both client and
+ *  server. Which is not always the case. Making sure different non-template connectors calling
+ *  the same method is hard, especially when the engineer maintaining the code may not be aware
+ *  of it when making changes. Template is a clean and easy way to solve this problem in this
+ *  case.
+ */
+template <typename VehicleClientType, typename VehicleServerType>
+class IPassThroughConnector : public VehicleClientType, public VehicleServerType {
+    static_assert(std::is_base_of_v<IVehicleClient, VehicleClientType>);
+    static_assert(std::is_base_of_v<IVehicleServer, VehicleServerType>);
+
+  public:
+    std::vector<VehiclePropConfig> getAllPropertyConfig() const override {
+        return this->onGetAllPropertyConfig();
+    }
+
+    StatusCode setProperty(const VehiclePropValue& value, bool updateStatus) override {
+        return this->onSetProperty(value, updateStatus);
+    }
+
+    void onPropertyValueFromCar(const VehiclePropValue& value, bool updateStatus) override {
+        return this->onPropertyValue(value, updateStatus);
+    }
+
+    // To be implemented:
+    // virtual std::vector<VehiclePropConfig> onGetAllPropertyConfig() = 0;
+    // virtual void onPropertyValue(const VehiclePropValue& value) = 0;
+    // virtual StatusCode onSetProperty(const VehiclePropValue& value) = 0;
+};
+
+}  // namespace V2_0
+}  // namespace vehicle
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
+
+#endif  // android_hardware_automotive_vehicle_V2_0_VehicleConnector_H_
diff --git a/automotive/vehicle/2.0/default/common/src/VehiclePropertyStore.cpp b/automotive/vehicle/2.0/default/common/src/VehiclePropertyStore.cpp
index 94ace45..24b777c 100644
--- a/automotive/vehicle/2.0/default/common/src/VehiclePropertyStore.cpp
+++ b/automotive/vehicle/2.0/default/common/src/VehiclePropertyStore.cpp
@@ -50,12 +50,18 @@
     VehiclePropValue* valueToUpdate = const_cast<VehiclePropValue*>(getValueOrNullLocked(recId));
     if (valueToUpdate == nullptr) {
         mPropertyValues.insert({ recId, propValue });
-    } else {
-        valueToUpdate->timestamp = propValue.timestamp;
-        valueToUpdate->value = propValue.value;
-        if (updateStatus) {
-            valueToUpdate->status = propValue.status;
-        }
+        return true;
+    }
+
+    // propValue is outdated and drops it.
+    if (valueToUpdate->timestamp > propValue.timestamp) {
+        return false;
+    }
+    // update the propertyValue.
+    valueToUpdate->timestamp = propValue.timestamp;
+    valueToUpdate->value = propValue.value;
+    if (updateStatus) {
+        valueToUpdate->status = propValue.status;
     }
     return true;
 }
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/CommConn.cpp b/automotive/vehicle/2.0/default/impl/vhal_v2_0/CommConn.cpp
index bf1de81..136b2e0 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/CommConn.cpp
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/CommConn.cpp
@@ -41,7 +41,7 @@
     }
 }
 
-void CommConn::sendMessage(emulator::EmulatorMessage const& msg) {
+void CommConn::sendMessage(vhal_proto::EmulatorMessage const& msg) {
     int numBytes = msg.ByteSize();
     std::vector<uint8_t> buffer(static_cast<size_t>(numBytes));
     if (!msg.SerializeToArray(buffer.data(), numBytes)) {
@@ -61,9 +61,9 @@
             break;
         }
 
-        emulator::EmulatorMessage rxMsg;
+        vhal_proto::EmulatorMessage rxMsg;
         if (rxMsg.ParseFromArray(buffer.data(), static_cast<int32_t>(buffer.size()))) {
-            emulator::EmulatorMessage respMsg;
+            vhal_proto::EmulatorMessage respMsg;
             mMessageProcessor->processMessage(rxMsg, respMsg);
 
             sendMessage(respMsg);
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/CommConn.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/CommConn.h
index 87b0dfc..6d36da4 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/CommConn.h
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/CommConn.h
@@ -44,8 +44,8 @@
      * Process a single message received over a CommConn. Populate the given respMsg with the reply
      * message we should send.
      */
-    virtual void processMessage(emulator::EmulatorMessage const& rxMsg,
-                                emulator::EmulatorMessage& respMsg) = 0;
+    virtual void processMessage(vhal_proto::EmulatorMessage const& rxMsg,
+                                vhal_proto::EmulatorMessage& respMsg) = 0;
 };
 
 /**
@@ -93,7 +93,7 @@
     /**
      * Serialized and send the given message to the other side.
      */
-    void sendMessage(emulator::EmulatorMessage const& msg);
+    void sendMessage(vhal_proto::EmulatorMessage const& msg);
 
    protected:
     std::unique_ptr<std::thread> mReadThread;
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/DefaultConfig.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/DefaultConfig.h
index 3070171..bf85da2 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/DefaultConfig.h
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/DefaultConfig.h
@@ -85,6 +85,34 @@
     0x0666 | VehiclePropertyGroup::VENDOR | VehicleArea::GLOBAL | VehiclePropertyType::MIXED;
 
 /**
+ * This property is used for test purpose to set properties' value from vehicle.
+ * For example: Mocking hard button press triggering a HVAC fan speed change.
+ * Android set kSetPropertyFromVehcileForTest with an array of integer {HVAC_FAN_SPEED, value of
+ * fan speed} and a long value indicates the timestamp of the events .
+ * It only works with integer type properties.
+ */
+const int32_t kSetIntPropertyFromVehcileForTest =
+        0x1112 | VehiclePropertyGroup::VENDOR | VehicleArea::GLOBAL | VehiclePropertyType::MIXED;
+/**
+ * This property is used for test purpose to set properties' value from vehicle.
+ * It only works with float type properties.
+ */
+const int32_t kSetFloatPropertyFromVehcileForTest =
+        0x1113 | VehiclePropertyGroup::VENDOR | VehicleArea::GLOBAL | VehiclePropertyType::MIXED;
+/**
+ * This property is used for test purpose to set properties' value from vehicle.
+ * It only works with boolean type properties.
+ */
+const int32_t kSetBooleanPropertyFromVehcileForTest =
+        0x1114 | VehiclePropertyGroup::VENDOR | VehicleArea::GLOBAL | VehiclePropertyType::MIXED;
+
+/**
+ * This property is used for test purpose. End to end tests use this property to test set and get
+ * method for MIXED type properties.
+ */
+const int32_t kMixedTypePropertyForTest =
+        0x1111 | VehiclePropertyGroup::VENDOR | VehicleArea::GLOBAL | VehiclePropertyType::MIXED;
+/**
  * FakeDataCommand enum defines the supported command type for kGenerateFakeDataControllingProperty.
  * All those commands can be send independently with each other. And each will override the one sent
  * previously.
@@ -167,7 +195,6 @@
                          .prop = toInt(VehicleProperty::INFO_FUEL_CAPACITY),
                          .access = VehiclePropertyAccess::READ,
                          .changeMode = VehiclePropertyChangeMode::STATIC,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.floatValues = {15000.0f}}},
 
@@ -177,14 +204,13 @@
                          .access = VehiclePropertyAccess::READ,
                          .changeMode = VehiclePropertyChangeMode::STATIC,
                  },
-         .initialValue = {.int32Values = {1}}},
+         .initialValue = {.int32Values = {(int)FuelType::FUEL_TYPE_UNLEADED}}},
 
         {.config =
                  {
                          .prop = toInt(VehicleProperty::INFO_EV_BATTERY_CAPACITY),
                          .access = VehiclePropertyAccess::READ,
                          .changeMode = VehiclePropertyChangeMode::STATIC,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.floatValues = {150000.0f}}},
 
@@ -194,14 +220,13 @@
                          .access = VehiclePropertyAccess::READ,
                          .changeMode = VehiclePropertyChangeMode::STATIC,
                  },
-         .initialValue = {.int32Values = {1}}},
+         .initialValue = {.int32Values = {(int)EvConnectorType::IEC_TYPE_1_AC}}},
 
         {.config =
                  {
                          .prop = toInt(VehicleProperty::INFO_DRIVER_SEAT),
                          .access = VehiclePropertyAccess::READ,
                          .changeMode = VehiclePropertyChangeMode::STATIC,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.int32Values = {SEAT_1_LEFT}}},
 
@@ -210,7 +235,6 @@
                          .prop = toInt(VehicleProperty::INFO_FUEL_DOOR_LOCATION),
                          .access = VehiclePropertyAccess::READ,
                          .changeMode = VehiclePropertyChangeMode::STATIC,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.int32Values = {FUEL_DOOR_REAR_LEFT}}},
 
@@ -219,7 +243,6 @@
                          .prop = toInt(VehicleProperty::INFO_EV_PORT_LOCATION),
                          .access = VehiclePropertyAccess::READ,
                          .changeMode = VehiclePropertyChangeMode::STATIC,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.int32Values = {CHARGE_PORT_FRONT_LEFT}}},
 
@@ -232,6 +255,13 @@
          .initialValue = {.stringValue = "Toy Vehicle"}},
         {.config =
                  {
+                         .prop = toInt(VehicleProperty::INFO_EXTERIOR_DIMENSIONS),
+                         .access = VehiclePropertyAccess::READ,
+                         .changeMode = VehiclePropertyChangeMode::STATIC,
+                 },
+         .initialValue = {.floatValues = {1776, 4950, 2008, 2140, 2984, 1665, 1667, 11800}}},
+        {.config =
+                 {
                          .prop = toInt(VehicleProperty::PERF_VEHICLE_SPEED),
                          .access = VehiclePropertyAccess::READ,
                          .changeMode = VehiclePropertyChangeMode::CONTINUOUS,
@@ -265,10 +295,29 @@
                  {
                          .prop = toInt(VehicleProperty::PERF_ODOMETER),
                          .access = VehiclePropertyAccess::READ,
-                         .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                         .changeMode = VehiclePropertyChangeMode::CONTINUOUS,
+                         .minSampleRate = 0.0f,
+                         .maxSampleRate = 10.0f,
                  },
          .initialValue = {.floatValues = {0.0f}}},
-
+        {.config =
+                 {
+                         .prop = toInt(VehicleProperty::PERF_STEERING_ANGLE),
+                         .access = VehiclePropertyAccess::READ,
+                         .changeMode = VehiclePropertyChangeMode::CONTINUOUS,
+                         .minSampleRate = 0.0f,
+                         .maxSampleRate = 10.0f,
+                 },
+         .initialValue = {.floatValues = {0.0f}}},
+        {.config =
+                 {
+                         .prop = toInt(VehicleProperty::PERF_REAR_STEERING_ANGLE),
+                         .access = VehiclePropertyAccess::READ,
+                         .changeMode = VehiclePropertyChangeMode::CONTINUOUS,
+                         .minSampleRate = 0.0f,
+                         .maxSampleRate = 10.0f,
+                 },
+         .initialValue = {.floatValues = {0.0f}}},
         {
                 .config =
                         {
@@ -285,8 +334,9 @@
                  {
                          .prop = toInt(VehicleProperty::FUEL_LEVEL),
                          .access = VehiclePropertyAccess::READ,
-                         .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
+                         .changeMode = VehiclePropertyChangeMode::CONTINUOUS,
+                         .minSampleRate = 0.0f,
+                         .maxSampleRate = 100.0f,
                  },
          .initialValue = {.floatValues = {15000.0f}}},
 
@@ -295,7 +345,6 @@
                          .prop = toInt(VehicleProperty::FUEL_DOOR_OPEN),
                          .access = VehiclePropertyAccess::READ_WRITE,
                          .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.int32Values = {0}}},
 
@@ -303,8 +352,9 @@
                  {
                          .prop = toInt(VehicleProperty::EV_BATTERY_LEVEL),
                          .access = VehiclePropertyAccess::READ,
-                         .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
+                         .changeMode = VehiclePropertyChangeMode::CONTINUOUS,
+                         .minSampleRate = 0.0f,
+                         .maxSampleRate = 100.0f,
                  },
          .initialValue = {.floatValues = {150000.0f}}},
 
@@ -313,7 +363,6 @@
                          .prop = toInt(VehicleProperty::EV_CHARGE_PORT_OPEN),
                          .access = VehiclePropertyAccess::READ_WRITE,
                          .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.int32Values = {0}}},
 
@@ -322,7 +371,6 @@
                          .prop = toInt(VehicleProperty::EV_CHARGE_PORT_CONNECTED),
                          .access = VehiclePropertyAccess::READ,
                          .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.int32Values = {0}}},
 
@@ -330,17 +378,17 @@
                  {
                          .prop = toInt(VehicleProperty::EV_BATTERY_INSTANTANEOUS_CHARGE_RATE),
                          .access = VehiclePropertyAccess::READ,
-                         .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
+                         .changeMode = VehiclePropertyChangeMode::CONTINUOUS,
+                         .minSampleRate = 1.0f,
+                         .maxSampleRate = 10.0f,
                  },
          .initialValue = {.floatValues = {0.0f}}},
 
         {.config =
                  {
                          .prop = toInt(VehicleProperty::RANGE_REMAINING),
-                         .access = VehiclePropertyAccess::READ,
+                         .access = VehiclePropertyAccess::READ_WRITE,
                          .changeMode = VehiclePropertyChangeMode::CONTINUOUS,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                          .minSampleRate = 1.0f,
                          .maxSampleRate = 2.0f,
                  },
@@ -374,7 +422,7 @@
                          .minSampleRate = 1.0f,
                          .maxSampleRate = 2.0f,
                  },
-         .initialValue = {.floatValues = {200}}},  // units in kPa
+         .initialValue = {.floatValues = {200.0f}}},  // units in kPa
 
         {.config =
                  {
@@ -397,7 +445,6 @@
                          .prop = toInt(VehicleProperty::FUEL_LEVEL_LOW),
                          .access = VehiclePropertyAccess::READ,
                          .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.int32Values = {0}}},
 
@@ -430,6 +477,17 @@
                                             .areaId = toInt(VehicleAreaWindow::REAR_WINDSHIELD)}}},
                 .initialValue = {.int32Values = {0}}  // Will be used for all areas.
         },
+        {
+                .config = {.prop = toInt(VehicleProperty::HVAC_ELECTRIC_DEFROSTER_ON),
+                           .access = VehiclePropertyAccess::READ_WRITE,
+                           .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                           .areaConfigs =
+                                   {VehicleAreaConfig{
+                                            .areaId = toInt(VehicleAreaWindow::FRONT_WINDSHIELD)},
+                                    VehicleAreaConfig{
+                                            .areaId = toInt(VehicleAreaWindow::REAR_WINDSHIELD)}}},
+                .initialValue = {.int32Values = {0}}  // Will be used for all areas.
+        },
 
         {.config = {.prop = toInt(VehicleProperty::HVAC_MAX_DEFROST_ON),
                     .access = VehiclePropertyAccess::READ_WRITE,
@@ -558,14 +616,10 @@
                  },
          .initialValue = {.floatValues = {25.0f}}},
 
-        {.config =
-                 {
-                         .prop = toInt(VehicleProperty::HVAC_TEMPERATURE_DISPLAY_UNITS),
-                         .access = VehiclePropertyAccess::READ_WRITE,
-                         .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
-                         .configArray = {(int)VehicleUnit::FAHRENHEIT, (int)VehicleUnit::CELSIUS},
-                 },
+        {.config = {.prop = toInt(VehicleProperty::HVAC_TEMPERATURE_DISPLAY_UNITS),
+                    .access = VehiclePropertyAccess::READ_WRITE,
+                    .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                    .configArray = {(int)VehicleUnit::FAHRENHEIT, (int)VehicleUnit::CELSIUS}},
          .initialValue = {.int32Values = {(int)VehicleUnit::FAHRENHEIT}}},
 
         {.config =
@@ -573,8 +627,8 @@
                          .prop = toInt(VehicleProperty::DISTANCE_DISPLAY_UNITS),
                          .access = VehiclePropertyAccess::READ_WRITE,
                          .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                          .configArray = {(int)VehicleUnit::KILOMETER, (int)VehicleUnit::MILE},
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}}
                  },
          .initialValue = {.int32Values = {(int)VehicleUnit::MILE}}},
 
@@ -596,6 +650,14 @@
 
         {.config =
                  {
+                         .prop = toInt(VehicleProperty::TURN_SIGNAL_STATE),
+                         .access = VehiclePropertyAccess::READ,
+                         .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                 },
+         .initialValue = {.int32Values = {toInt(VehicleTurnSignal::NONE)}}},
+
+        {.config =
+                 {
                          .prop = toInt(VehicleProperty::IGNITION_STATE),
                          .access = VehiclePropertyAccess::READ,
                          .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
@@ -626,6 +688,50 @@
                                 .prop = kGenerateFakeDataControllingProperty,
                                 .access = VehiclePropertyAccess::WRITE,
                                 .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                                .configArray = {1, 0, 0, 2, 0, 0, 0, 0, 0},
+                        },
+        },
+
+        {
+                .config =
+                        {
+                                .prop = kSetIntPropertyFromVehcileForTest,
+                                .access = VehiclePropertyAccess::WRITE,
+                                .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                                .configArray = {0, 0, 0, 2, 1, 0, 0, 0, 0},
+                        },
+        },
+
+        {
+                .config =
+                        {
+                                .prop = kSetFloatPropertyFromVehcileForTest,
+                                .access = VehiclePropertyAccess::WRITE,
+                                .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                                .configArray = {0, 0, 1, 0, 1, 0, 1, 0, 0},
+                        },
+        },
+
+        {
+                .config =
+                        {
+                                .prop = kSetBooleanPropertyFromVehcileForTest,
+                                .access = VehiclePropertyAccess::WRITE,
+                                .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                                .configArray = {0, 1, 1, 0, 1, 0, 0, 0, 0},
+                        },
+        },
+
+        {
+                .config = {.prop = kMixedTypePropertyForTest,
+                           .access = VehiclePropertyAccess::READ_WRITE,
+                           .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                           .configArray = {1, 1, 0, 2, 0, 0, 1, 0, 0}},
+                .initialValue =
+                        {
+                                .int32Values = {1 /* indicate TRUE boolean value */, 2, 3},
+                                .floatValues = {4.5f},
+                                .stringValue = "MIXED property",
                         },
         },
 
@@ -757,7 +863,6 @@
                          .prop = toInt(VehicleProperty::HEADLIGHTS_STATE),
                          .access = VehiclePropertyAccess::READ,
                          .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.int32Values = {LIGHT_STATE_ON}}},
 
@@ -766,7 +871,6 @@
                          .prop = toInt(VehicleProperty::HIGH_BEAM_LIGHTS_STATE),
                          .access = VehiclePropertyAccess::READ,
                          .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.int32Values = {LIGHT_STATE_ON}}},
 
@@ -775,7 +879,6 @@
                          .prop = toInt(VehicleProperty::FOG_LIGHTS_STATE),
                          .access = VehiclePropertyAccess::READ,
                          .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.int32Values = {LIGHT_STATE_ON}}},
 
@@ -784,7 +887,6 @@
                          .prop = toInt(VehicleProperty::HAZARD_LIGHTS_STATE),
                          .access = VehiclePropertyAccess::READ,
                          .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.int32Values = {LIGHT_STATE_ON}}},
 
@@ -793,7 +895,6 @@
                          .prop = toInt(VehicleProperty::HEADLIGHTS_SWITCH),
                          .access = VehiclePropertyAccess::READ_WRITE,
                          .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.int32Values = {LIGHT_SWITCH_AUTO}}},
 
@@ -802,7 +903,6 @@
                          .prop = toInt(VehicleProperty::HIGH_BEAM_LIGHTS_SWITCH),
                          .access = VehiclePropertyAccess::READ_WRITE,
                          .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.int32Values = {LIGHT_SWITCH_AUTO}}},
 
@@ -811,7 +911,6 @@
                          .prop = toInt(VehicleProperty::FOG_LIGHTS_SWITCH),
                          .access = VehiclePropertyAccess::READ_WRITE,
                          .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.int32Values = {LIGHT_SWITCH_AUTO}}},
 
@@ -820,7 +919,6 @@
                          .prop = toInt(VehicleProperty::HAZARD_LIGHTS_SWITCH),
                          .access = VehiclePropertyAccess::READ_WRITE,
                          .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
-                         .areaConfigs = {VehicleAreaConfig{.areaId = (0)}},
                  },
          .initialValue = {.int32Values = {LIGHT_SWITCH_AUTO}}},
 
@@ -874,6 +972,24 @@
                     .access = VehiclePropertyAccess::READ_WRITE,
                     .changeMode = VehiclePropertyChangeMode::ON_CHANGE},
          .initialValue = {.stringValue = "Vendor String Property"}},
+
+        {.config =
+                 {
+                         .prop = toInt(VehicleProperty::SUPPORT_CUSTOMIZE_VENDOR_PERMISSION),
+                         .access = VehiclePropertyAccess::READ_WRITE,
+                         .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
+                         .configArray =
+                                 {kMixedTypePropertyForTest,
+                                  (int)VehicleVendorPermission::PERMISSION_GET_VENDOR_CATEGORY_INFO,
+                                  (int)VehicleVendorPermission::PERMISSION_SET_VENDOR_CATEGORY_INFO,
+                                  VENDOR_EXTENSION_INT_PROPERTY,
+                                  (int)VehicleVendorPermission::PERMISSION_GET_VENDOR_CATEGORY_SEAT,
+                                  (int)VehicleVendorPermission::PERMISSION_NOT_ACCESSIBLE,
+                                  VENDOR_EXTENSION_FLOAT_PROPERTY,
+                                  (int)VehicleVendorPermission::PERMISSION_DEFAULT,
+                                  (int)VehicleVendorPermission::PERMISSION_DEFAULT},
+                 },
+         .initialValue = {.int32Values = {1}}},
 };
 
 }  // impl
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleConnector.cpp b/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleConnector.cpp
new file mode 100644
index 0000000..222fe5e
--- /dev/null
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleConnector.cpp
@@ -0,0 +1,287 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <android-base/logging.h>
+#include <utils/SystemClock.h>
+
+#include "DefaultConfig.h"
+#include "EmulatedVehicleConnector.h"
+#include "JsonFakeValueGenerator.h"
+#include "LinearFakeValueGenerator.h"
+#include "Obd2SensorStore.h"
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace vehicle {
+namespace V2_0 {
+
+namespace impl {
+
+void EmulatedVehicleClient::onPropertyValue(const VehiclePropValue& value, bool updateStatus) {
+    if (!mPropCallback) {
+        LOG(ERROR) << __func__ << ": PropertyCallBackType is not registered!";
+        return;
+    }
+    return mPropCallback(value, updateStatus);
+}
+
+void EmulatedVehicleClient::registerPropertyValueCallback(PropertyCallBackType&& callback) {
+    if (mPropCallback) {
+        LOG(ERROR) << __func__ << ": Cannot register multiple callbacks!";
+        return;
+    }
+    mPropCallback = std::move(callback);
+}
+
+GeneratorHub* EmulatedVehicleServer::getGenerator() {
+    return &mGeneratorHub;
+}
+
+VehiclePropValuePool* EmulatedVehicleServer::getValuePool() const {
+    if (!mValuePool) {
+        LOG(WARNING) << __func__ << ": Value pool not set!";
+    }
+    return mValuePool;
+}
+
+void EmulatedVehicleServer::setValuePool(VehiclePropValuePool* valuePool) {
+    if (!valuePool) {
+        LOG(WARNING) <<  __func__ << ": Setting value pool to nullptr!";
+    }
+    mValuePool = valuePool;
+}
+
+void EmulatedVehicleServer::onFakeValueGenerated(const VehiclePropValue& value) {
+    constexpr bool updateStatus = true;
+    LOG(DEBUG) << __func__ << ": " << toString(value);
+    auto updatedPropValue = getValuePool()->obtain(value);
+    if (updatedPropValue) {
+        updatedPropValue->timestamp = value.timestamp;
+        updatedPropValue->status = VehiclePropertyStatus::AVAILABLE;
+        onPropertyValueFromCar(*updatedPropValue, updateStatus);
+    }
+}
+
+std::vector<VehiclePropConfig> EmulatedVehicleServer::onGetAllPropertyConfig() const {
+    std::vector<VehiclePropConfig> vehiclePropConfigs;
+    constexpr size_t numOfVehiclePropConfigs =
+            sizeof(kVehicleProperties) / sizeof(kVehicleProperties[0]);
+    vehiclePropConfigs.reserve(numOfVehiclePropConfigs);
+    for (auto& it : kVehicleProperties) {
+        vehiclePropConfigs.emplace_back(it.config);
+    }
+    return vehiclePropConfigs;
+}
+
+StatusCode EmulatedVehicleServer::handleGenerateFakeDataRequest(const VehiclePropValue& request) {
+    constexpr bool updateStatus = true;
+
+    LOG(INFO) << __func__;
+    const auto& v = request.value;
+    if (!v.int32Values.size()) {
+        LOG(ERROR) << __func__ << ": expected at least \"command\" field in int32Values";
+        return StatusCode::INVALID_ARG;
+    }
+
+    FakeDataCommand command = static_cast<FakeDataCommand>(v.int32Values[0]);
+
+    switch (command) {
+        case FakeDataCommand::StartLinear: {
+            LOG(INFO) << __func__ << ", FakeDataCommand::StartLinear";
+            if (v.int32Values.size() < 2) {
+                LOG(ERROR) << __func__ << ": expected property ID in int32Values";
+                return StatusCode::INVALID_ARG;
+            }
+            if (!v.int64Values.size()) {
+                LOG(ERROR) << __func__ << ": interval is not provided in int64Values";
+                return StatusCode::INVALID_ARG;
+            }
+            if (v.floatValues.size() < 3) {
+                LOG(ERROR) << __func__ << ": expected at least 3 elements in floatValues, got: "
+                      << v.floatValues.size();
+                return StatusCode::INVALID_ARG;
+            }
+            int32_t cookie = v.int32Values[1];
+            getGenerator()->registerGenerator(cookie,
+                                              std::make_unique<LinearFakeValueGenerator>(request));
+            break;
+        }
+        case FakeDataCommand::StartJson: {
+            LOG(INFO) << __func__ << ", FakeDataCommand::StartJson";
+            if (v.stringValue.empty()) {
+                LOG(ERROR) << __func__ << ": path to JSON file is missing";
+                return StatusCode::INVALID_ARG;
+            }
+            int32_t cookie = std::hash<std::string>()(v.stringValue);
+            getGenerator()->registerGenerator(cookie,
+                                              std::make_unique<JsonFakeValueGenerator>(request));
+            break;
+        }
+        case FakeDataCommand::StopLinear: {
+            LOG(INFO) << __func__ << ", FakeDataCommand::StopLinear";
+            if (v.int32Values.size() < 2) {
+                LOG(ERROR) << __func__ << ": expected property ID in int32Values";
+                return StatusCode::INVALID_ARG;
+            }
+            int32_t cookie = v.int32Values[1];
+            getGenerator()->unregisterGenerator(cookie);
+            break;
+        }
+        case FakeDataCommand::StopJson: {
+            LOG(INFO) << __func__ << ", FakeDataCommand::StopJson";
+            if (v.stringValue.empty()) {
+                LOG(ERROR) << __func__ << ": path to JSON file is missing";
+                return StatusCode::INVALID_ARG;
+            }
+            int32_t cookie = std::hash<std::string>()(v.stringValue);
+            getGenerator()->unregisterGenerator(cookie);
+            break;
+        }
+        case FakeDataCommand::KeyPress: {
+            LOG(INFO) << __func__ << ", FakeDataCommand::KeyPress";
+            int32_t keyCode = request.value.int32Values[2];
+            int32_t display = request.value.int32Values[3];
+            // Send back to HAL
+            onPropertyValueFromCar(
+                    *createHwInputKeyProp(VehicleHwKeyInputAction::ACTION_DOWN, keyCode, display),
+                    updateStatus);
+            onPropertyValueFromCar(
+                    *createHwInputKeyProp(VehicleHwKeyInputAction::ACTION_UP, keyCode, display),
+                    updateStatus);
+            break;
+        }
+        default: {
+            LOG(ERROR) << __func__ << ": unexpected command: " << toInt(command);
+            return StatusCode::INVALID_ARG;
+        }
+    }
+    return StatusCode::OK;
+}
+
+VehicleHal::VehiclePropValuePtr EmulatedVehicleServer::createApPowerStateReq(
+    VehicleApPowerStateReq state, int32_t param) {
+    auto req = getValuePool()->obtain(VehiclePropertyType::INT32_VEC, 2);
+    req->prop = toInt(VehicleProperty::AP_POWER_STATE_REQ);
+    req->areaId = 0;
+    req->timestamp = elapsedRealtimeNano();
+    req->status = VehiclePropertyStatus::AVAILABLE;
+    req->value.int32Values[0] = toInt(state);
+    req->value.int32Values[1] = param;
+    return req;
+}
+
+VehicleHal::VehiclePropValuePtr EmulatedVehicleServer::createHwInputKeyProp(
+        VehicleHwKeyInputAction action, int32_t keyCode, int32_t targetDisplay) {
+    auto keyEvent = getValuePool()->obtain(VehiclePropertyType::INT32_VEC, 3);
+    keyEvent->prop = toInt(VehicleProperty::HW_KEY_INPUT);
+    keyEvent->areaId = 0;
+    keyEvent->timestamp = elapsedRealtimeNano();
+    keyEvent->status = VehiclePropertyStatus::AVAILABLE;
+    keyEvent->value.int32Values[0] = toInt(action);
+    keyEvent->value.int32Values[1] = keyCode;
+    keyEvent->value.int32Values[2] = targetDisplay;
+    return keyEvent;
+}
+
+StatusCode EmulatedVehicleServer::onSetProperty(const VehiclePropValue& value, bool updateStatus) {
+    // Some properties need to be treated non-trivially
+    switch (value.prop) {
+        case kGenerateFakeDataControllingProperty:
+            return handleGenerateFakeDataRequest(value);
+
+        // set the value from vehcile side, used in end to end test.
+        case kSetIntPropertyFromVehcileForTest: {
+            auto updatedPropValue = createVehiclePropValue(VehiclePropertyType::INT32, 1);
+            updatedPropValue->prop = value.value.int32Values[0];
+            updatedPropValue->value.int32Values[0] = value.value.int32Values[1];
+            updatedPropValue->timestamp = value.value.int64Values[0];
+            updatedPropValue->areaId = value.areaId;
+            onPropertyValueFromCar(*updatedPropValue, updateStatus);
+            return StatusCode::OK;
+        }
+        case kSetFloatPropertyFromVehcileForTest: {
+            auto updatedPropValue = createVehiclePropValue(VehiclePropertyType::FLOAT, 1);
+            updatedPropValue->prop = value.value.int32Values[0];
+            updatedPropValue->value.floatValues[0] = value.value.floatValues[0];
+            updatedPropValue->timestamp = value.value.int64Values[0];
+            updatedPropValue->areaId = value.areaId;
+            onPropertyValueFromCar(*updatedPropValue, updateStatus);
+            return StatusCode::OK;
+        }
+        case kSetBooleanPropertyFromVehcileForTest: {
+            auto updatedPropValue = createVehiclePropValue(VehiclePropertyType::BOOLEAN, 1);
+            updatedPropValue->prop = value.value.int32Values[1];
+            updatedPropValue->value.int32Values[0] = value.value.int32Values[0];
+            updatedPropValue->timestamp = value.value.int64Values[0];
+            updatedPropValue->areaId = value.areaId;
+            onPropertyValueFromCar(*updatedPropValue, updateStatus);
+            return StatusCode::OK;
+        }
+
+        case AP_POWER_STATE_REPORT:
+            switch (value.value.int32Values[0]) {
+                case toInt(VehicleApPowerStateReport::DEEP_SLEEP_EXIT):
+                case toInt(VehicleApPowerStateReport::SHUTDOWN_CANCELLED):
+                case toInt(VehicleApPowerStateReport::WAIT_FOR_VHAL):
+                    // CPMS is in WAIT_FOR_VHAL state, simply move to ON
+                    // Send back to HAL
+                    // ALWAYS update status for generated property value
+                    onPropertyValueFromCar(*createApPowerStateReq(VehicleApPowerStateReq::ON, 0),
+                                           true /* updateStatus */);
+                    break;
+                case toInt(VehicleApPowerStateReport::DEEP_SLEEP_ENTRY):
+                case toInt(VehicleApPowerStateReport::SHUTDOWN_START):
+                    // CPMS is in WAIT_FOR_FINISH state, send the FINISHED command
+                    // Send back to HAL
+                    // ALWAYS update status for generated property value
+                    onPropertyValueFromCar(
+                            *createApPowerStateReq(VehicleApPowerStateReq::FINISHED, 0),
+                            true /* updateStatus */);
+                    break;
+                case toInt(VehicleApPowerStateReport::ON):
+                case toInt(VehicleApPowerStateReport::SHUTDOWN_POSTPONE):
+                case toInt(VehicleApPowerStateReport::SHUTDOWN_PREPARE):
+                    // Do nothing
+                    break;
+                default:
+                    // Unknown state
+                    break;
+            }
+            break;
+        default:
+            break;
+    }
+
+    // In the real vhal, the value will be sent to Car ECU.
+    // We just pretend it is done here and send back to HAL
+    auto updatedPropValue = getValuePool()->obtain(value);
+    updatedPropValue->timestamp = elapsedRealtimeNano();
+
+    onPropertyValueFromCar(*updatedPropValue, updateStatus);
+    return StatusCode::OK;
+}
+
+EmulatedPassthroughConnectorPtr makeEmulatedPassthroughConnector() {
+    return std::make_unique<EmulatedPassthroughConnector>();
+}
+
+}  // namespace impl
+
+}  // namespace V2_0
+}  // namespace vehicle
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleConnector.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleConnector.h
new file mode 100644
index 0000000..5fc6493
--- /dev/null
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleConnector.h
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef android_hardware_automotive_vehicle_V2_0_impl_EmulatedVehicleConnector_H_
+#define android_hardware_automotive_vehicle_V2_0_impl_EmulatedVehicleConnector_H_
+
+#include <vhal_v2_0/VehicleConnector.h>
+#include <vhal_v2_0/VehicleHal.h>
+
+#include "GeneratorHub.h"
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace vehicle {
+namespace V2_0 {
+
+namespace impl {
+
+// Extension of the client/server interfaces for emulated vehicle
+
+class EmulatedVehicleClient : public IVehicleClient {
+  public:
+    // Type of callback function for handling the new property values
+    using PropertyCallBackType = std::function<void(const VehiclePropValue&, bool updateStatus)>;
+
+    // Method from IVehicleClient
+    void onPropertyValue(const VehiclePropValue& value, bool updateStatus) override;
+
+    void registerPropertyValueCallback(PropertyCallBackType&& callback);
+
+  private:
+    PropertyCallBackType mPropCallback;
+};
+
+class EmulatedVehicleServer : public IVehicleServer {
+  public:
+    // Methods from IVehicleServer
+
+    std::vector<VehiclePropConfig> onGetAllPropertyConfig() const override;
+
+    StatusCode onSetProperty(const VehiclePropValue& value, bool updateStatus) override;
+
+    // Set the Property Value Pool used in this server
+    void setValuePool(VehiclePropValuePool* valuePool);
+
+  private:
+    GeneratorHub* getGenerator();
+
+    VehiclePropValuePool* getValuePool() const;
+
+    void onFakeValueGenerated(const VehiclePropValue& value);
+
+    StatusCode handleGenerateFakeDataRequest(const VehiclePropValue& request);
+
+    VehicleHal::VehiclePropValuePtr createApPowerStateReq(VehicleApPowerStateReq req, int32_t param);
+
+    VehicleHal::VehiclePropValuePtr createHwInputKeyProp(VehicleHwKeyInputAction action,
+                                                         int32_t keyCode, int32_t targetDisplay);
+
+    // private data members
+
+    GeneratorHub mGeneratorHub{
+            std::bind(&EmulatedVehicleServer::onFakeValueGenerated, this, std::placeholders::_1)};
+
+    VehiclePropValuePool* mValuePool{nullptr};
+};
+
+// Helper functions
+
+using EmulatedPassthroughConnector =
+        IPassThroughConnector<EmulatedVehicleClient, EmulatedVehicleServer>;
+using EmulatedPassthroughConnectorPtr = std::unique_ptr<EmulatedPassthroughConnector>;
+
+EmulatedPassthroughConnectorPtr makeEmulatedPassthroughConnector();
+
+}  // namespace impl
+
+}  // namespace V2_0
+}  // namespace vehicle
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
+
+#endif  // android_hardware_automotive_vehicle_V2_0_impl_EmulatedVehicleConnector_H_
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.cpp b/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.cpp
index e1da030..5c16bf7 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.cpp
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.cpp
@@ -87,17 +87,20 @@
     return sensorStore;
 }
 
-EmulatedVehicleHal::EmulatedVehicleHal(VehiclePropertyStore* propStore)
+EmulatedVehicleHal::EmulatedVehicleHal(VehiclePropertyStore* propStore,
+                                       EmulatedVehicleClient* client)
     : mPropStore(propStore),
       mHvacPowerProps(std::begin(kHvacPowerProperties), std::end(kHvacPowerProperties)),
       mRecurrentTimer(
           std::bind(&EmulatedVehicleHal::onContinuousPropertyTimer, this, std::placeholders::_1)),
-      mGeneratorHub(
-          std::bind(&EmulatedVehicleHal::onFakeValueGenerated, this, std::placeholders::_1)) {
+      mVehicleClient(client) {
     initStaticConfig();
     for (size_t i = 0; i < arraysize(kVehicleProperties); i++) {
         mPropStore->registerProperty(kVehicleProperties[i].config);
     }
+    mVehicleClient->registerPropertyValueCallback(std::bind(&EmulatedVehicleHal::onPropertyValue,
+                                                            this, std::placeholders::_1,
+                                                            std::placeholders::_2));
 }
 
 VehicleHal::VehiclePropValuePtr EmulatedVehicleHal::get(
@@ -129,10 +132,15 @@
 }
 
 StatusCode EmulatedVehicleHal::set(const VehiclePropValue& propValue) {
-    static constexpr bool shouldUpdateStatus = false;
+    constexpr bool updateStatus = false;
 
     if (propValue.prop == kGenerateFakeDataControllingProperty) {
-        StatusCode status = handleGenerateFakeDataRequest(propValue);
+        // Send the generator controlling request to the server.
+        // 'updateStatus' flag is only for the value sent by setProperty (propValue in this case)
+        // instead of the generated values triggered by it. 'propValue' works as a control signal
+        // here, since we never send the control signal back, the value of 'updateStatus' flag
+        // does not matter here.
+        auto status = mVehicleClient->setProperty(propValue, updateStatus);
         if (status != StatusCode::OK) {
             return status;
         }
@@ -156,29 +164,6 @@
                 // Placeholder for future implementation of VMS property in the default hal. For
                 // now, just returns OK; otherwise, hal clients crash with property not supported.
                 return StatusCode::OK;
-            case AP_POWER_STATE_REPORT:
-                switch (propValue.value.int32Values[0]) {
-                    case toInt(VehicleApPowerStateReport::DEEP_SLEEP_EXIT):
-                    case toInt(VehicleApPowerStateReport::SHUTDOWN_CANCELLED):
-                    case toInt(VehicleApPowerStateReport::WAIT_FOR_VHAL):
-                        // CPMS is in WAIT_FOR_VHAL state, simply move to ON
-                        doHalEvent(createApPowerStateReq(VehicleApPowerStateReq::ON, 0));
-                        break;
-                    case toInt(VehicleApPowerStateReport::DEEP_SLEEP_ENTRY):
-                    case toInt(VehicleApPowerStateReport::SHUTDOWN_START):
-                        // CPMS is in WAIT_FOR_FINISH state, send the FINISHED command
-                        doHalEvent(createApPowerStateReq(VehicleApPowerStateReq::FINISHED, 0));
-                        break;
-                    case toInt(VehicleApPowerStateReport::ON):
-                    case toInt(VehicleApPowerStateReport::SHUTDOWN_POSTPONE):
-                    case toInt(VehicleApPowerStateReport::SHUTDOWN_PREPARE):
-                        // Do nothing
-                        break;
-                    default:
-                        // Unknown state
-                        break;
-                }
-                break;
         }
     }
 
@@ -198,12 +183,16 @@
         return StatusCode::NOT_AVAILABLE;
     }
 
-    if (!mPropStore->writeValue(propValue, shouldUpdateStatus)) {
-        return StatusCode::INVALID_ARG;
-    }
+    /**
+     * After checking all conditions, such as the property is available, a real vhal will
+     * sent the events to Car ECU to take actions.
+     */
 
-    getEmulatorOrDie()->doSetValueFromClient(propValue);
-    doHalEvent(getValuePool()->obtain(propValue));
+    // Send the value to the vehicle server, the server will talk to the (real or emulated) car
+    auto setValueStatus = mVehicleClient->setProperty(propValue, updateStatus);
+    if (setValueStatus != StatusCode::OK) {
+        return setValueStatus;
+    }
 
     return StatusCode::OK;
 }
@@ -291,7 +280,6 @@
         }
 
         if (v.get()) {
-            v->timestamp = elapsedRealtimeNano();
             doHalEvent(std::move(v));
         }
     }
@@ -324,144 +312,20 @@
 }
 
 bool EmulatedVehicleHal::setPropertyFromVehicle(const VehiclePropValue& propValue) {
-    static constexpr bool shouldUpdateStatus = true;
-
-    if (propValue.prop == kGenerateFakeDataControllingProperty) {
-        StatusCode status = handleGenerateFakeDataRequest(propValue);
-        if (status != StatusCode::OK) {
-            return false;
-        }
-    }
-
-    if (mPropStore->writeValue(propValue, shouldUpdateStatus)) {
-        doHalEvent(getValuePool()->obtain(propValue));
-        return true;
-    } else {
-        return false;
-    }
+    constexpr bool updateStatus = true;
+    return mVehicleClient->setProperty(propValue, updateStatus) == StatusCode::OK;
 }
 
 std::vector<VehiclePropValue> EmulatedVehicleHal::getAllProperties() const  {
     return mPropStore->readAllValues();
 }
 
-StatusCode EmulatedVehicleHal::handleGenerateFakeDataRequest(const VehiclePropValue& request) {
-    ALOGI("%s", __func__);
-    const auto& v = request.value;
-    if (!v.int32Values.size()) {
-        ALOGE("%s: expected at least \"command\" field in int32Values", __func__);
-        return StatusCode::INVALID_ARG;
-    }
-
-    FakeDataCommand command = static_cast<FakeDataCommand>(v.int32Values[0]);
-
-    switch (command) {
-        case FakeDataCommand::StartLinear: {
-            ALOGI("%s, FakeDataCommand::StartLinear", __func__);
-            if (v.int32Values.size() < 2) {
-                ALOGE("%s: expected property ID in int32Values", __func__);
-                return StatusCode::INVALID_ARG;
-            }
-            if (!v.int64Values.size()) {
-                ALOGE("%s: interval is not provided in int64Values", __func__);
-                return StatusCode::INVALID_ARG;
-            }
-            if (v.floatValues.size() < 3) {
-                ALOGE("%s: expected at least 3 elements in floatValues, got: %zu", __func__,
-                      v.floatValues.size());
-                return StatusCode::INVALID_ARG;
-            }
-            int32_t cookie = v.int32Values[1];
-            mGeneratorHub.registerGenerator(cookie,
-                                            std::make_unique<LinearFakeValueGenerator>(request));
-            break;
-        }
-        case FakeDataCommand::StartJson: {
-            ALOGI("%s, FakeDataCommand::StartJson", __func__);
-            if (v.stringValue.empty()) {
-                ALOGE("%s: path to JSON file is missing", __func__);
-                return StatusCode::INVALID_ARG;
-            }
-            int32_t cookie = std::hash<std::string>()(v.stringValue);
-            mGeneratorHub.registerGenerator(cookie,
-                                            std::make_unique<JsonFakeValueGenerator>(request));
-            break;
-        }
-        case FakeDataCommand::StopLinear: {
-            ALOGI("%s, FakeDataCommand::StopLinear", __func__);
-            if (v.int32Values.size() < 2) {
-                ALOGE("%s: expected property ID in int32Values", __func__);
-                return StatusCode::INVALID_ARG;
-            }
-            int32_t cookie = v.int32Values[1];
-            mGeneratorHub.unregisterGenerator(cookie);
-            break;
-        }
-        case FakeDataCommand::StopJson: {
-            ALOGI("%s, FakeDataCommand::StopJson", __func__);
-            if (v.stringValue.empty()) {
-                ALOGE("%s: path to JSON file is missing", __func__);
-                return StatusCode::INVALID_ARG;
-            }
-            int32_t cookie = std::hash<std::string>()(v.stringValue);
-            mGeneratorHub.unregisterGenerator(cookie);
-            break;
-        }
-        case FakeDataCommand::KeyPress: {
-            ALOGI("%s, FakeDataCommand::KeyPress", __func__);
-            int32_t keyCode = request.value.int32Values[2];
-            int32_t display = request.value.int32Values[3];
-            doHalEvent(
-                createHwInputKeyProp(VehicleHwKeyInputAction::ACTION_DOWN, keyCode, display));
-            doHalEvent(createHwInputKeyProp(VehicleHwKeyInputAction::ACTION_UP, keyCode, display));
-            break;
-        }
-        default: {
-            ALOGE("%s: unexpected command: %d", __func__, command);
-            return StatusCode::INVALID_ARG;
-        }
-    }
-    return StatusCode::OK;
-}
-
-VehicleHal::VehiclePropValuePtr EmulatedVehicleHal::createApPowerStateReq(
-    VehicleApPowerStateReq state, int32_t param) {
-    auto req = getValuePool()->obtain(VehiclePropertyType::INT32_VEC, 2);
-    req->prop = toInt(VehicleProperty::AP_POWER_STATE_REQ);
-    req->areaId = 0;
-    req->timestamp = elapsedRealtimeNano();
-    req->status = VehiclePropertyStatus::AVAILABLE;
-    req->value.int32Values[0] = toInt(state);
-    req->value.int32Values[1] = param;
-    return req;
-}
-
-VehicleHal::VehiclePropValuePtr EmulatedVehicleHal::createHwInputKeyProp(
-    VehicleHwKeyInputAction action, int32_t keyCode, int32_t targetDisplay) {
-    auto keyEvent = getValuePool()->obtain(VehiclePropertyType::INT32_VEC, 3);
-    keyEvent->prop = toInt(VehicleProperty::HW_KEY_INPUT);
-    keyEvent->areaId = 0;
-    keyEvent->timestamp = elapsedRealtimeNano();
-    keyEvent->status = VehiclePropertyStatus::AVAILABLE;
-    keyEvent->value.int32Values[0] = toInt(action);
-    keyEvent->value.int32Values[1] = keyCode;
-    keyEvent->value.int32Values[2] = targetDisplay;
-    return keyEvent;
-}
-
-void EmulatedVehicleHal::onFakeValueGenerated(const VehiclePropValue& value) {
-    ALOGD("%s: %s", __func__, toString(value).c_str());
-    static constexpr bool shouldUpdateStatus = false;
-
+void EmulatedVehicleHal::onPropertyValue(const VehiclePropValue& value, bool updateStatus) {
     VehiclePropValuePtr updatedPropValue = getValuePool()->obtain(value);
-    if (updatedPropValue) {
-        updatedPropValue->timestamp = elapsedRealtimeNano();
-        updatedPropValue->status = VehiclePropertyStatus::AVAILABLE;
-        mPropStore->writeValue(*updatedPropValue, shouldUpdateStatus);
-        auto changeMode = mPropStore->getConfigOrDie(value.prop)->changeMode;
-        if (VehiclePropertyChangeMode::ON_CHANGE == changeMode) {
-            doHalEvent(std::move(updatedPropValue));
-        }
+
+    if (mPropStore->writeValue(*updatedPropValue, updateStatus)) {
+        getEmulatorOrDie()->doSetValueFromClient(*updatedPropValue);
+        doHalEvent(std::move(updatedPropValue));
     }
 }
 
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.h
index 78895e3..a8378da 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.h
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/EmulatedVehicleHal.h
@@ -30,6 +30,7 @@
 #include "vhal_v2_0/VehiclePropertyStore.h"
 
 #include "DefaultConfig.h"
+#include "EmulatedVehicleConnector.h"
 #include "GeneratorHub.h"
 #include "VehicleEmulator.h"
 
@@ -44,7 +45,8 @@
 /** Implementation of VehicleHal that connected to emulator instead of real vehicle network. */
 class EmulatedVehicleHal : public EmulatedVehicleHalIface {
 public:
-    EmulatedVehicleHal(VehiclePropertyStore* propStore);
+    EmulatedVehicleHal(VehiclePropertyStore* propStore,
+                       EmulatedVehicleClient* client);
     ~EmulatedVehicleHal() = default;
 
     //  Methods from VehicleHal
@@ -66,10 +68,7 @@
     }
 
     StatusCode handleGenerateFakeDataRequest(const VehiclePropValue& request);
-    void onFakeValueGenerated(const VehiclePropValue& value);
-    VehiclePropValuePtr createApPowerStateReq(VehicleApPowerStateReq req, int32_t param);
-    VehiclePropValuePtr createHwInputKeyProp(VehicleHwKeyInputAction action, int32_t keyCode,
-                                             int32_t targetDisplay);
+    void onPropertyValue(const VehiclePropValue& value, bool updateStatus);
 
     void onContinuousPropertyTimer(const std::vector<int32_t>& properties);
     bool isContinuousProperty(int32_t propId) const;
@@ -85,7 +84,7 @@
     VehiclePropertyStore* mPropStore;
     std::unordered_set<int32_t> mHvacPowerProps;
     RecurrentTimer mRecurrentTimer;
-    GeneratorHub mGeneratorHub;
+    EmulatedVehicleClient* mVehicleClient;
 };
 
 }  // impl
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/ProtoMessageConverter.cpp b/automotive/vehicle/2.0/default/impl/vhal_v2_0/ProtoMessageConverter.cpp
new file mode 100644
index 0000000..77cb114
--- /dev/null
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/ProtoMessageConverter.cpp
@@ -0,0 +1,216 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "ProtoMsgConverter"
+
+#include <memory>
+#include <vector>
+
+#include <log/log.h>
+
+#include <vhal_v2_0/VehicleUtils.h>
+
+#include "ProtoMessageConverter.h"
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace vehicle {
+namespace V2_0 {
+
+namespace impl {
+
+namespace proto_msg_converter {
+
+// If protobuf class PROTO_VALUE has value in field PROTO_VARNAME,
+// then casting the value by CAST and copying it to VHAL_TYPE_VALUE->VHAL_TYPE_VARNAME
+#define CHECK_CAST_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(PROTO_VALUE, PROTO_VARNAME, VHAL_TYPE_VALUE, \
+                                                  VHAL_TYPE_VARNAME, CAST)                     \
+    if (PROTO_VALUE.has_##PROTO_VARNAME()) {                                                   \
+        (VHAL_TYPE_VALUE)->VHAL_TYPE_VARNAME = CAST(PROTO_VALUE.PROTO_VARNAME());              \
+    }
+
+// Copying the vector PROTO_VECNAME of protobuf class PROTO_VALUE to
+// VHAL_TYPE_VALUE->VHAL_TYPE_VECNAME, every element of PROTO_VECNAME
+// is casted by CAST
+#define CAST_COPY_PROTOBUF_VEC_TO_VHAL_TYPE(PROTO_VALUE, PROTO_VECNAME, VHAL_TYPE_VALUE, \
+                                            VHAL_TYPE_VECNAME, CAST)                     \
+    do {                                                                                 \
+        (VHAL_TYPE_VALUE)->VHAL_TYPE_VECNAME.resize(PROTO_VALUE.PROTO_VECNAME##_size()); \
+        size_t idx = 0;                                                                  \
+        for (auto& value : PROTO_VALUE.PROTO_VECNAME()) {                                \
+            VHAL_TYPE_VALUE->VHAL_TYPE_VECNAME[idx++] = CAST(value);                     \
+        }                                                                                \
+    } while (0)
+
+// If protobuf message has value in field PROTO_VARNAME,
+// then copying it to VHAL_TYPE_VALUE->VHAL_TYPE_VARNAME
+#define CHECK_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(PROTO_VALUE, PROTO_VARNAME, VHAL_TYPE_VALUE, \
+                                             VHAL_TYPE_VARNAME)                           \
+    CHECK_CAST_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(                                            \
+            PROTO_VALUE, PROTO_VARNAME, VHAL_TYPE_VALUE, VHAL_TYPE_VARNAME, /*NO CAST*/)
+
+// Copying the vector PROTO_VECNAME of protobuf class PROTO_VALUE to
+// VHAL_TYPE_VALUE->VHAL_TYPE_VECNAME
+#define COPY_PROTOBUF_VEC_TO_VHAL_TYPE(PROTO_VALUE, PROTO_VECNAME, VHAL_TYPE_VALUE, \
+                                       VHAL_TYPE_VECNAME)                           \
+    CAST_COPY_PROTOBUF_VEC_TO_VHAL_TYPE(                                            \
+            PROTO_VALUE, PROTO_VECNAME, VHAL_TYPE_VALUE, VHAL_TYPE_VECNAME, /*NO CAST*/)
+
+void toProto(vhal_proto::VehiclePropConfig* protoCfg, const VehiclePropConfig& cfg) {
+    protoCfg->set_prop(cfg.prop);
+    protoCfg->set_access(toInt(cfg.access));
+    protoCfg->set_change_mode(toInt(cfg.changeMode));
+    protoCfg->set_value_type(toInt(getPropType(cfg.prop)));
+
+    for (auto& configElement : cfg.configArray) {
+        protoCfg->add_config_array(configElement);
+    }
+
+    if (cfg.configString.size() > 0) {
+        protoCfg->set_config_string(cfg.configString.c_str(), cfg.configString.size());
+    }
+
+    protoCfg->clear_area_configs();
+    for (auto& areaConfig : cfg.areaConfigs) {
+        auto* protoACfg = protoCfg->add_area_configs();
+        protoACfg->set_area_id(areaConfig.areaId);
+
+        switch (getPropType(cfg.prop)) {
+            case VehiclePropertyType::STRING:
+            case VehiclePropertyType::BOOLEAN:
+            case VehiclePropertyType::INT32_VEC:
+            case VehiclePropertyType::INT64_VEC:
+            case VehiclePropertyType::FLOAT_VEC:
+            case VehiclePropertyType::BYTES:
+            case VehiclePropertyType::MIXED:
+                // Do nothing.  These types don't have min/max values
+                break;
+            case VehiclePropertyType::INT64:
+                protoACfg->set_min_int64_value(areaConfig.minInt64Value);
+                protoACfg->set_max_int64_value(areaConfig.maxInt64Value);
+                break;
+            case VehiclePropertyType::FLOAT:
+                protoACfg->set_min_float_value(areaConfig.minFloatValue);
+                protoACfg->set_max_float_value(areaConfig.maxFloatValue);
+                break;
+            case VehiclePropertyType::INT32:
+                protoACfg->set_min_int32_value(areaConfig.minInt32Value);
+                protoACfg->set_max_int32_value(areaConfig.maxInt32Value);
+                break;
+            default:
+                ALOGW("%s: Unknown property type:  0x%x", __func__, toInt(getPropType(cfg.prop)));
+                break;
+        }
+    }
+
+    protoCfg->set_min_sample_rate(cfg.minSampleRate);
+    protoCfg->set_max_sample_rate(cfg.maxSampleRate);
+}
+
+void fromProto(VehiclePropConfig* cfg, const vhal_proto::VehiclePropConfig& protoCfg) {
+    CHECK_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(protoCfg, prop, cfg, prop);
+    CHECK_CAST_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(protoCfg, access, cfg, access,
+                                              static_cast<VehiclePropertyAccess>);
+    CHECK_CAST_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(protoCfg, change_mode, cfg, changeMode,
+                                              static_cast<VehiclePropertyChangeMode>);
+    COPY_PROTOBUF_VEC_TO_VHAL_TYPE(protoCfg, config_array, cfg, configArray);
+    CHECK_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(protoCfg, config_string, cfg, configString);
+
+    auto cast_to_acfg = [](const vhal_proto::VehicleAreaConfig& protoAcfg) {
+        VehicleAreaConfig acfg;
+        CHECK_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(protoAcfg, area_id, &acfg, areaId);
+        CHECK_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(protoAcfg, min_int32_value, &acfg, minInt32Value);
+        CHECK_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(protoAcfg, max_int32_value, &acfg, maxInt32Value);
+        CHECK_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(protoAcfg, min_int64_value, &acfg, minInt64Value);
+        CHECK_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(protoAcfg, max_int64_value, &acfg, maxInt64Value);
+        CHECK_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(protoAcfg, min_float_value, &acfg, minFloatValue);
+        CHECK_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(protoAcfg, max_float_value, &acfg, maxFloatValue);
+        return acfg;
+    };
+
+    CAST_COPY_PROTOBUF_VEC_TO_VHAL_TYPE(protoCfg, area_configs, cfg, areaConfigs, cast_to_acfg);
+
+    CHECK_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(protoCfg, min_sample_rate, cfg, minSampleRate);
+    CHECK_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(protoCfg, max_sample_rate, cfg, maxSampleRate);
+}
+
+void toProto(vhal_proto::VehiclePropValue* protoVal, const VehiclePropValue& val) {
+    protoVal->set_prop(val.prop);
+    protoVal->set_value_type(toInt(getPropType(val.prop)));
+    protoVal->set_timestamp(val.timestamp);
+    protoVal->set_status((vhal_proto::VehiclePropStatus)(val.status));
+    protoVal->set_area_id(val.areaId);
+
+    // Copy value data if it is set.
+    //  - for bytes and strings, this is indicated by size > 0
+    //  - for int32, int64, and float, copy the values if vectors have data
+    if (val.value.stringValue.size() > 0) {
+        protoVal->set_string_value(val.value.stringValue.c_str(), val.value.stringValue.size());
+    }
+
+    if (val.value.bytes.size() > 0) {
+        protoVal->set_bytes_value(val.value.bytes.data(), val.value.bytes.size());
+    }
+
+    for (auto& int32Value : val.value.int32Values) {
+        protoVal->add_int32_values(int32Value);
+    }
+
+    for (auto& int64Value : val.value.int64Values) {
+        protoVal->add_int64_values(int64Value);
+    }
+
+    for (auto& floatValue : val.value.floatValues) {
+        protoVal->add_float_values(floatValue);
+    }
+}
+
+void fromProto(VehiclePropValue* val, const vhal_proto::VehiclePropValue& protoVal) {
+    CHECK_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(protoVal, prop, val, prop);
+    CHECK_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(protoVal, timestamp, val, timestamp);
+    CHECK_CAST_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(protoVal, status, val, status,
+                                              static_cast<VehiclePropertyStatus>);
+    CHECK_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(protoVal, area_id, val, areaId);
+
+    // Copy value data
+    CHECK_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(protoVal, string_value, val, value.stringValue);
+
+    auto cast_proto_bytes_to_vec = [](auto&& bytes) {
+        return std::vector<uint8_t>(bytes.begin(), bytes.end());
+    };
+    CHECK_CAST_COPY_PROTOBUF_VAR_TO_VHAL_TYPE(protoVal, bytes_value, val, value.bytes,
+                                              cast_proto_bytes_to_vec);
+
+    COPY_PROTOBUF_VEC_TO_VHAL_TYPE(protoVal, int32_values, val, value.int32Values);
+    COPY_PROTOBUF_VEC_TO_VHAL_TYPE(protoVal, int64_values, val, value.int64Values);
+    COPY_PROTOBUF_VEC_TO_VHAL_TYPE(protoVal, float_values, val, value.floatValues);
+}
+
+#undef COPY_PROTOBUF_VEC_TO_VHAL_TYPE
+#undef CHECK_COPY_PROTOBUF_VAR_TO_VHAL_TYPE
+#undef CAST_COPY_PROTOBUF_VEC_TO_VHAL_TYPE
+#undef CHECK_CAST_COPY_PROTOBUF_VAR_TO_VHAL_TYPE
+
+}  // namespace proto_msg_converter
+
+}  // namespace impl
+
+}  // namespace V2_0
+}  // namespace vehicle
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/ProtoMessageConverter.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/ProtoMessageConverter.h
new file mode 100644
index 0000000..01f3beb
--- /dev/null
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/ProtoMessageConverter.h
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef android_hardware_automotive_vehicle_V2_0_impl_ProtoMessageConverter_H_
+#define android_hardware_automotive_vehicle_V2_0_impl_ProtoMessageConverter_H_
+
+#include <android/hardware/automotive/vehicle/2.0/types.h>
+
+#include "VehicleHalProto.pb.h"
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace vehicle {
+namespace V2_0 {
+
+namespace impl {
+
+namespace proto_msg_converter {
+
+// VehiclePropConfig
+
+void toProto(vhal_proto::VehiclePropConfig* protoCfg, const VehiclePropConfig& cfg);
+
+void fromProto(VehiclePropConfig* cfg, const vhal_proto::VehiclePropConfig& protoCfg);
+
+// VehiclePropValue
+
+void toProto(vhal_proto::VehiclePropValue* protoVal, const VehiclePropValue& val);
+
+void fromProto(VehiclePropValue* val, const vhal_proto::VehiclePropValue& protoVal);
+
+}  // namespace proto_msg_converter
+
+}  // namespace impl
+
+}  // namespace V2_0
+}  // namespace vehicle
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
+
+#endif  // android_hardware_automotive_vehicle_V2_0_impl_VehicleHalEmulator_H_
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/SocketComm.cpp b/automotive/vehicle/2.0/default/impl/vhal_v2_0/SocketComm.cpp
index 9eb8894..916c320 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/SocketComm.cpp
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/SocketComm.cpp
@@ -60,7 +60,7 @@
     }
 }
 
-void SocketComm::sendMessage(emulator::EmulatorMessage const& msg) {
+void SocketComm::sendMessage(vhal_proto::EmulatorMessage const& msg) {
     std::lock_guard<std::mutex> lock(mMutex);
     for (std::unique_ptr<SocketConn> const& conn : mOpenConnections) {
         conn->sendMessage(msg);
@@ -92,7 +92,10 @@
     }
 
     ALOGI("%s: Listening for connections on port %d", __FUNCTION__, DEBUG_SOCKET);
-    ::listen(mListenFd, 1);
+    if (::listen(mListenFd, 1) == -1) {
+        ALOGE("%s: Error on listening: errno: %d: %s", __FUNCTION__, errno, strerror(errno));
+        return false;
+    }
     return true;
 }
 
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/SocketComm.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/SocketComm.h
index 88b852b..52326b9 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/SocketComm.h
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/SocketComm.h
@@ -47,7 +47,7 @@
     /**
      * Serialized and send the given message to all connected clients.
      */
-    void sendMessage(emulator::EmulatorMessage const& msg);
+    void sendMessage(vhal_proto::EmulatorMessage const& msg);
 
    private:
     int mListenFd;
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/VehicleEmulator.cpp b/automotive/vehicle/2.0/default/impl/vhal_v2_0/VehicleEmulator.cpp
index 9dc7085..263ca62 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/VehicleEmulator.cpp
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/VehicleEmulator.cpp
@@ -24,6 +24,7 @@
 #include <vhal_v2_0/VehicleUtils.h>
 
 #include "PipeComm.h"
+#include "ProtoMessageConverter.h"
 #include "SocketComm.h"
 
 #include "VehicleEmulator.h"
@@ -62,11 +63,11 @@
  * changed.
  */
 void VehicleEmulator::doSetValueFromClient(const VehiclePropValue& propValue) {
-    emulator::EmulatorMessage msg;
-    emulator::VehiclePropValue *val = msg.add_value();
+    vhal_proto::EmulatorMessage msg;
+    vhal_proto::VehiclePropValue* val = msg.add_value();
     populateProtoVehiclePropValue(val, &propValue);
-    msg.set_status(emulator::RESULT_OK);
-    msg.set_msg_type(emulator::SET_PROPERTY_ASYNC);
+    msg.set_status(vhal_proto::RESULT_OK);
+    msg.set_msg_type(vhal_proto::SET_PROPERTY_ASYNC);
 
     mSocketComm->sendMessage(msg);
     if (mPipeComm) {
@@ -77,17 +78,17 @@
 void VehicleEmulator::doGetConfig(VehicleEmulator::EmulatorMessage const& rxMsg,
                                   VehicleEmulator::EmulatorMessage& respMsg) {
     std::vector<VehiclePropConfig> configs = mHal->listProperties();
-    emulator::VehiclePropGet getProp = rxMsg.prop(0);
+    vhal_proto::VehiclePropGet getProp = rxMsg.prop(0);
 
-    respMsg.set_msg_type(emulator::GET_CONFIG_RESP);
-    respMsg.set_status(emulator::ERROR_INVALID_PROPERTY);
+    respMsg.set_msg_type(vhal_proto::GET_CONFIG_RESP);
+    respMsg.set_status(vhal_proto::ERROR_INVALID_PROPERTY);
 
     for (auto& config : configs) {
         // Find the config we are looking for
         if (config.prop == getProp.prop()) {
-            emulator::VehiclePropConfig* protoCfg = respMsg.add_config();
+            vhal_proto::VehiclePropConfig* protoCfg = respMsg.add_config();
             populateProtoVehicleConfig(protoCfg, config);
-            respMsg.set_status(emulator::RESULT_OK);
+            respMsg.set_status(vhal_proto::RESULT_OK);
             break;
         }
     }
@@ -97,11 +98,11 @@
                                      VehicleEmulator::EmulatorMessage& respMsg) {
     std::vector<VehiclePropConfig> configs = mHal->listProperties();
 
-    respMsg.set_msg_type(emulator::GET_CONFIG_ALL_RESP);
-    respMsg.set_status(emulator::RESULT_OK);
+    respMsg.set_msg_type(vhal_proto::GET_CONFIG_ALL_RESP);
+    respMsg.set_status(vhal_proto::RESULT_OK);
 
     for (auto& config : configs) {
-        emulator::VehiclePropConfig* protoCfg = respMsg.add_config();
+        vhal_proto::VehiclePropConfig* protoCfg = respMsg.add_config();
         populateProtoVehicleConfig(protoCfg, config);
     }
 }
@@ -109,11 +110,11 @@
 void VehicleEmulator::doGetProperty(VehicleEmulator::EmulatorMessage const& rxMsg,
                                     VehicleEmulator::EmulatorMessage& respMsg) {
     int32_t areaId = 0;
-    emulator::VehiclePropGet getProp = rxMsg.prop(0);
+    vhal_proto::VehiclePropGet getProp = rxMsg.prop(0);
     int32_t propId = getProp.prop();
-    emulator::Status status = emulator::ERROR_INVALID_PROPERTY;
+    vhal_proto::Status status = vhal_proto::ERROR_INVALID_PROPERTY;
 
-    respMsg.set_msg_type(emulator::GET_PROPERTY_RESP);
+    respMsg.set_msg_type(vhal_proto::GET_PROPERTY_RESP);
 
     if (getProp.has_area_id()) {
         areaId = getProp.area_id();
@@ -127,9 +128,9 @@
         StatusCode halStatus;
         auto val = mHal->get(request, &halStatus);
         if (val != nullptr) {
-            emulator::VehiclePropValue* protoVal = respMsg.add_value();
+            vhal_proto::VehiclePropValue* protoVal = respMsg.add_value();
             populateProtoVehiclePropValue(protoVal, val.get());
-            status = emulator::RESULT_OK;
+            status = vhal_proto::RESULT_OK;
         }
     }
 
@@ -138,12 +139,12 @@
 
 void VehicleEmulator::doGetPropertyAll(VehicleEmulator::EmulatorMessage const& /* rxMsg */,
                                        VehicleEmulator::EmulatorMessage& respMsg) {
-    respMsg.set_msg_type(emulator::GET_PROPERTY_ALL_RESP);
-    respMsg.set_status(emulator::RESULT_OK);
+    respMsg.set_msg_type(vhal_proto::GET_PROPERTY_ALL_RESP);
+    respMsg.set_status(vhal_proto::RESULT_OK);
 
     {
         for (const auto& prop : mHal->getAllProperties()) {
-            emulator::VehiclePropValue* protoVal = respMsg.add_value();
+            vhal_proto::VehiclePropValue* protoVal = respMsg.add_value();
             populateProtoVehiclePropValue(protoVal, &prop);
         }
     }
@@ -151,7 +152,7 @@
 
 void VehicleEmulator::doSetProperty(VehicleEmulator::EmulatorMessage const& rxMsg,
                                     VehicleEmulator::EmulatorMessage& respMsg) {
-    emulator::VehiclePropValue protoVal = rxMsg.value(0);
+    vhal_proto::VehiclePropValue protoVal = rxMsg.value(0);
     VehiclePropValue val = {
             .timestamp = elapsedRealtimeNano(),
             .areaId = protoVal.area_id(),
@@ -159,7 +160,7 @@
             .status = (VehiclePropertyStatus)protoVal.status(),
     };
 
-    respMsg.set_msg_type(emulator::SET_PROPERTY_RESP);
+    respMsg.set_msg_type(vhal_proto::SET_PROPERTY_RESP);
 
     // Copy value data if it is set.  This automatically handles complex data types if needed.
     if (protoVal.has_string_value()) {
@@ -187,120 +188,42 @@
     }
 
     bool halRes = mHal->setPropertyFromVehicle(val);
-    respMsg.set_status(halRes ? emulator::RESULT_OK : emulator::ERROR_INVALID_PROPERTY);
+    respMsg.set_status(halRes ? vhal_proto::RESULT_OK : vhal_proto::ERROR_INVALID_PROPERTY);
 }
 
-void VehicleEmulator::processMessage(emulator::EmulatorMessage const& rxMsg,
-                                     emulator::EmulatorMessage& respMsg) {
+void VehicleEmulator::processMessage(vhal_proto::EmulatorMessage const& rxMsg,
+                                     vhal_proto::EmulatorMessage& respMsg) {
     switch (rxMsg.msg_type()) {
-        case emulator::GET_CONFIG_CMD:
+        case vhal_proto::GET_CONFIG_CMD:
             doGetConfig(rxMsg, respMsg);
             break;
-        case emulator::GET_CONFIG_ALL_CMD:
+        case vhal_proto::GET_CONFIG_ALL_CMD:
             doGetConfigAll(rxMsg, respMsg);
             break;
-        case emulator::GET_PROPERTY_CMD:
+        case vhal_proto::GET_PROPERTY_CMD:
             doGetProperty(rxMsg, respMsg);
             break;
-        case emulator::GET_PROPERTY_ALL_CMD:
+        case vhal_proto::GET_PROPERTY_ALL_CMD:
             doGetPropertyAll(rxMsg, respMsg);
             break;
-        case emulator::SET_PROPERTY_CMD:
+        case vhal_proto::SET_PROPERTY_CMD:
             doSetProperty(rxMsg, respMsg);
             break;
         default:
             ALOGW("%s: Unknown message received, type = %d", __func__, rxMsg.msg_type());
-            respMsg.set_status(emulator::ERROR_UNIMPLEMENTED_CMD);
+            respMsg.set_status(vhal_proto::ERROR_UNIMPLEMENTED_CMD);
             break;
     }
 }
 
-void VehicleEmulator::populateProtoVehicleConfig(emulator::VehiclePropConfig* protoCfg,
+void VehicleEmulator::populateProtoVehicleConfig(vhal_proto::VehiclePropConfig* protoCfg,
                                                  const VehiclePropConfig& cfg) {
-    protoCfg->set_prop(cfg.prop);
-    protoCfg->set_access(toInt(cfg.access));
-    protoCfg->set_change_mode(toInt(cfg.changeMode));
-    protoCfg->set_value_type(toInt(getPropType(cfg.prop)));
-
-    for (auto& configElement : cfg.configArray) {
-        protoCfg->add_config_array(configElement);
-    }
-
-    if (cfg.configString.size() > 0) {
-        protoCfg->set_config_string(cfg.configString.c_str(), cfg.configString.size());
-    }
-
-    // Populate the min/max values based on property type
-    switch (getPropType(cfg.prop)) {
-        case VehiclePropertyType::STRING:
-        case VehiclePropertyType::BOOLEAN:
-        case VehiclePropertyType::INT32_VEC:
-        case VehiclePropertyType::INT64_VEC:
-        case VehiclePropertyType::FLOAT_VEC:
-        case VehiclePropertyType::BYTES:
-        case VehiclePropertyType::MIXED:
-            // Do nothing.  These types don't have min/max values
-            break;
-        case VehiclePropertyType::INT64:
-            if (cfg.areaConfigs.size() > 0) {
-                emulator::VehicleAreaConfig* aCfg = protoCfg->add_area_configs();
-                aCfg->set_min_int64_value(cfg.areaConfigs[0].minInt64Value);
-                aCfg->set_max_int64_value(cfg.areaConfigs[0].maxInt64Value);
-            }
-            break;
-        case VehiclePropertyType::FLOAT:
-            if (cfg.areaConfigs.size() > 0) {
-                emulator::VehicleAreaConfig* aCfg = protoCfg->add_area_configs();
-                aCfg->set_min_float_value(cfg.areaConfigs[0].minFloatValue);
-                aCfg->set_max_float_value(cfg.areaConfigs[0].maxFloatValue);
-            }
-            break;
-        case VehiclePropertyType::INT32:
-            if (cfg.areaConfigs.size() > 0) {
-                emulator::VehicleAreaConfig* aCfg = protoCfg->add_area_configs();
-                aCfg->set_min_int32_value(cfg.areaConfigs[0].minInt32Value);
-                aCfg->set_max_int32_value(cfg.areaConfigs[0].maxInt32Value);
-            }
-            break;
-        default:
-            ALOGW("%s: Unknown property type:  0x%x", __func__, toInt(getPropType(cfg.prop)));
-            break;
-    }
-
-    protoCfg->set_min_sample_rate(cfg.minSampleRate);
-    protoCfg->set_max_sample_rate(cfg.maxSampleRate);
+    return proto_msg_converter::toProto(protoCfg, cfg);
 }
 
-void VehicleEmulator::populateProtoVehiclePropValue(emulator::VehiclePropValue* protoVal,
+void VehicleEmulator::populateProtoVehiclePropValue(vhal_proto::VehiclePropValue* protoVal,
                                                     const VehiclePropValue* val) {
-    protoVal->set_prop(val->prop);
-    protoVal->set_value_type(toInt(getPropType(val->prop)));
-    protoVal->set_timestamp(val->timestamp);
-    protoVal->set_status((emulator::VehiclePropStatus)(val->status));
-    protoVal->set_area_id(val->areaId);
-
-    // Copy value data if it is set.
-    //  - for bytes and strings, this is indicated by size > 0
-    //  - for int32, int64, and float, copy the values if vectors have data
-    if (val->value.stringValue.size() > 0) {
-        protoVal->set_string_value(val->value.stringValue.c_str(), val->value.stringValue.size());
-    }
-
-    if (val->value.bytes.size() > 0) {
-        protoVal->set_bytes_value(val->value.bytes.data(), val->value.bytes.size());
-    }
-
-    for (auto& int32Value : val->value.int32Values) {
-        protoVal->add_int32_values(int32Value);
-    }
-
-    for (auto& int64Value : val->value.int64Values) {
-        protoVal->add_int64_values(int64Value);
-    }
-
-    for (auto& floatValue : val->value.floatValues) {
-        protoVal->add_float_values(floatValue);
-    }
+    return proto_msg_converter::toProto(protoVal, *val);
 }
 
 }  // impl
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/VehicleEmulator.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/VehicleEmulator.h
index 58e387a..82947be 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/VehicleEmulator.h
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/VehicleEmulator.h
@@ -72,21 +72,21 @@
     virtual ~VehicleEmulator();
 
     void doSetValueFromClient(const VehiclePropValue& propValue);
-    void processMessage(emulator::EmulatorMessage const& rxMsg,
-                        emulator::EmulatorMessage& respMsg) override;
+    void processMessage(vhal_proto::EmulatorMessage const& rxMsg,
+                        vhal_proto::EmulatorMessage& respMsg) override;
 
    private:
     friend class ConnectionThread;
-    using EmulatorMessage = emulator::EmulatorMessage;
+    using EmulatorMessage = vhal_proto::EmulatorMessage;
 
     void doGetConfig(EmulatorMessage const& rxMsg, EmulatorMessage& respMsg);
     void doGetConfigAll(EmulatorMessage const& rxMsg, EmulatorMessage& respMsg);
     void doGetProperty(EmulatorMessage const& rxMsg, EmulatorMessage& respMsg);
     void doGetPropertyAll(EmulatorMessage const& rxMsg, EmulatorMessage& respMsg);
     void doSetProperty(EmulatorMessage const& rxMsg, EmulatorMessage& respMsg);
-    void populateProtoVehicleConfig(emulator::VehiclePropConfig* protoCfg,
+    void populateProtoVehicleConfig(vhal_proto::VehiclePropConfig* protoCfg,
                                     const VehiclePropConfig& cfg);
-    void populateProtoVehiclePropValue(emulator::VehiclePropValue* protoVal,
+    void populateProtoVehiclePropValue(vhal_proto::VehiclePropValue* protoVal,
                                        const VehiclePropValue* val);
 
 private:
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/proto/Android.bp b/automotive/vehicle/2.0/default/impl/vhal_v2_0/proto/Android.bp
index 6754843..2eedecd 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/proto/Android.bp
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/proto/Android.bp
@@ -29,3 +29,64 @@
     ],
     srcs: ["VehicleHalProto.proto"]
 }
+
+cc_library_static {
+    name: "android.hardware.automotive.vehicle@2.0-grpc",
+    vendor: true,
+    include_dirs: [
+        "external/protobuf/src",
+    ],
+    generated_headers: [
+        "DefaultVehicleHalProtoStub_h",
+    ],
+    export_generated_headers: [
+        "DefaultVehicleHalProtoStub_h",
+    ],
+    generated_sources: [
+        "DefaultVehicleHalProtoStub_cc",
+    ],
+    shared_libs: [
+        "libgrpc++_unsecure",
+    ],
+    cflags: [
+        "-Wno-unused-parameter"
+    ],
+}
+
+genrule {
+    name: "DefaultVehicleHalProtoStub_h",
+    tools: [
+        "aprotoc",
+        "protoc-gen-grpc-cpp-plugin",
+    ],
+    cmd: "$(location aprotoc) -I$$(dirname $(in)) -Iexternal/protobuf/src --plugin=protoc-gen-grpc=$(location protoc-gen-grpc-cpp-plugin) $(in) --grpc_out=$(genDir) --cpp_out=$(genDir)",
+    srcs: [
+        "VehicleHalProto.proto",
+        "VehicleServer.proto",
+    ],
+    out: [
+        "VehicleHalProto.pb.h",
+        "VehicleHalProto.grpc.pb.h",
+        "VehicleServer.pb.h",
+        "VehicleServer.grpc.pb.h",
+    ],
+}
+
+genrule {
+    name: "DefaultVehicleHalProtoStub_cc",
+    tools: [
+        "aprotoc",
+        "protoc-gen-grpc-cpp-plugin",
+    ],
+    cmd: "$(location aprotoc) -I$$(dirname $(in)) -Iexternal/protobuf/src --plugin=protoc-gen-grpc=$(location protoc-gen-grpc-cpp-plugin) $(in) --grpc_out=$(genDir) --cpp_out=$(genDir)",
+    srcs: [
+        "VehicleHalProto.proto",
+        "VehicleServer.proto",
+    ],
+    out: [
+        "VehicleHalProto.pb.cc",
+        "VehicleHalProto.grpc.pb.cc",
+        "VehicleServer.pb.cc",
+        "VehicleServer.grpc.pb.cc",
+    ],
+}
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/proto/VehicleHalProto.proto b/automotive/vehicle/2.0/default/impl/vhal_v2_0/proto/VehicleHalProto.proto
index 2ef64fb..4902a5d 100644
--- a/automotive/vehicle/2.0/default/impl/vhal_v2_0/proto/VehicleHalProto.proto
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/proto/VehicleHalProto.proto
@@ -15,9 +15,8 @@
  */
 
 syntax = "proto2";
-option optimize_for = LITE_RUNTIME;
 
-package emulator;
+package vhal_proto;
 
 // CMD messages are from workstation --> VHAL
 // RESP messages are from VHAL --> workstation
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/proto/VehicleServer.proto b/automotive/vehicle/2.0/default/impl/vhal_v2_0/proto/VehicleServer.proto
new file mode 100644
index 0000000..6f71d65
--- /dev/null
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/proto/VehicleServer.proto
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+syntax = "proto3";
+
+package vhal_proto;
+
+import "google/protobuf/empty.proto";
+import "VehicleHalProto.proto";
+
+// correspond to StatusCode defined in types.hal
+enum VehicleHalStatusCode {
+    OK                                  = 0;
+    TRY_AGAIN                           = 1;
+    INVALID_ARG                         = 2;
+    NOT_AVAILABLE                       = 3;
+    ACCESS_DENIED                       = 4;
+    INTERNAL_ERROR                      = 5;
+}
+
+message VehicleHalCallStatus {
+    VehicleHalStatusCode status_code    = 1;
+}
+
+message WrappedVehiclePropValue {
+    VehiclePropValue value              = 1;
+    // An indicator on whether we should update the status of the property
+    //   - true: if the value is generated by (emulated/real) car, or;
+    //           if the value is injected to 'fake' a on car event (for debugging purpose)
+    //   - false: if the value is set by VHal (public interface), since Android
+    //            cannot change status of property on a real car
+    bool update_status                  = 2;
+}
+
+service VehicleServer {
+    rpc GetAllPropertyConfig(google.protobuf.Empty) returns (stream VehiclePropConfig) {}
+
+    // Change the property value of the vehicle
+    rpc SetProperty(WrappedVehiclePropValue) returns (VehicleHalCallStatus) {}
+
+    // Start a vehicle property value stream
+    rpc StartPropertyValuesStream(google.protobuf.Empty) returns (stream WrappedVehiclePropValue) {}
+}
+
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/tests/ProtoMessageConverter_test.cpp b/automotive/vehicle/2.0/default/impl/vhal_v2_0/tests/ProtoMessageConverter_test.cpp
new file mode 100644
index 0000000..3817e44
--- /dev/null
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/tests/ProtoMessageConverter_test.cpp
@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gtest/gtest.h>
+
+#include <utils/SystemClock.h>
+
+#include "vhal_v2_0/DefaultConfig.h"
+#include "vhal_v2_0/ProtoMessageConverter.h"
+#include "vhal_v2_0/VehicleUtils.h"
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace vehicle {
+namespace V2_0 {
+namespace impl {
+namespace proto_msg_converter {
+
+namespace {
+
+void CheckPropConfigConversion(const VehiclePropConfig& config) {
+    vhal_proto::VehiclePropConfig protoCfg;
+    VehiclePropConfig tmpConfig;
+
+    toProto(&protoCfg, config);
+    fromProto(&tmpConfig, protoCfg);
+
+    EXPECT_EQ(config.prop, tmpConfig.prop);
+    EXPECT_EQ(config.access, tmpConfig.access);
+    EXPECT_EQ(config.changeMode, tmpConfig.changeMode);
+    EXPECT_EQ(config.configString, tmpConfig.configString);
+    EXPECT_EQ(config.minSampleRate, tmpConfig.minSampleRate);
+    EXPECT_EQ(config.maxSampleRate, tmpConfig.maxSampleRate);
+    EXPECT_EQ(config.configArray, tmpConfig.configArray);
+
+    EXPECT_EQ(config.areaConfigs.size(), tmpConfig.areaConfigs.size());
+
+    auto cfgType = getPropType(config.prop);
+    for (size_t idx = 0; idx < std::min(config.areaConfigs.size(), tmpConfig.areaConfigs.size());
+         ++idx) {
+        auto& lhs = config.areaConfigs[idx];
+        auto& rhs = tmpConfig.areaConfigs[idx];
+        EXPECT_EQ(lhs.areaId, rhs.areaId);
+        switch (cfgType) {
+            case VehiclePropertyType::INT64:
+                EXPECT_EQ(lhs.minInt64Value, rhs.minInt64Value);
+                EXPECT_EQ(lhs.maxInt64Value, rhs.maxInt64Value);
+                break;
+            case VehiclePropertyType::FLOAT:
+                EXPECT_EQ(lhs.minFloatValue, rhs.minFloatValue);
+                EXPECT_EQ(lhs.maxFloatValue, rhs.maxFloatValue);
+                break;
+            case VehiclePropertyType::INT32:
+                EXPECT_EQ(lhs.minInt32Value, rhs.minInt32Value);
+                EXPECT_EQ(lhs.maxInt32Value, rhs.maxInt32Value);
+                break;
+            default:
+                // ignore min/max values
+                break;
+        }
+    }
+}
+
+void CheckPropValueConversion(const VehiclePropValue& val) {
+    vhal_proto::VehiclePropValue protoVal;
+    VehiclePropValue tmpVal;
+
+    toProto(&protoVal, val);
+    fromProto(&tmpVal, protoVal);
+
+    EXPECT_EQ(val, tmpVal);
+}
+
+TEST(ProtoMessageConverterTest, basic) {
+    for (auto& property : impl::kVehicleProperties) {
+        CheckPropConfigConversion(property.config);
+
+        VehiclePropValue prop;
+        prop.timestamp = elapsedRealtimeNano();
+        prop.areaId = 123;
+        prop.prop = property.config.prop;
+        prop.value = property.initialValue;
+        prop.status = VehiclePropertyStatus::ERROR;
+        CheckPropValueConversion(prop);
+    }
+}
+
+}  // namespace
+
+}  // namespace proto_msg_converter
+}  // namespace impl
+}  // namespace V2_0
+}  // namespace vehicle
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/virtualization/GrpcVehicleClient.cpp b/automotive/vehicle/2.0/default/impl/vhal_v2_0/virtualization/GrpcVehicleClient.cpp
new file mode 100644
index 0000000..e329c5b
--- /dev/null
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/virtualization/GrpcVehicleClient.cpp
@@ -0,0 +1,162 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "GrpcVehicleClient.h"
+
+#include <condition_variable>
+#include <mutex>
+
+#include <android-base/logging.h>
+#include <grpc++/grpc++.h>
+
+#include "VehicleServer.grpc.pb.h"
+#include "VehicleServer.pb.h"
+#include "vhal_v2_0/ProtoMessageConverter.h"
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace vehicle {
+namespace V2_0 {
+
+namespace impl {
+
+static std::shared_ptr<::grpc::ChannelCredentials> getChannelCredentials() {
+    // TODO(chenhaosjtuacm): get secured credentials here
+    return ::grpc::InsecureChannelCredentials();
+}
+
+class GrpcVehicleClientImpl : public EmulatedVehicleClient {
+  public:
+    GrpcVehicleClientImpl(const std::string& addr)
+        : mServiceAddr(addr),
+          mGrpcChannel(::grpc::CreateChannel(mServiceAddr, getChannelCredentials())),
+          mGrpcStub(vhal_proto::VehicleServer::NewStub(mGrpcChannel)) {
+        StartValuePollingThread();
+    }
+
+    ~GrpcVehicleClientImpl() {
+        mShuttingDownFlag.store(true);
+        mShutdownCV.notify_all();
+        if (mPollingThread.joinable()) {
+            mPollingThread.join();
+        }
+    }
+
+    // methods from IVehicleClient
+
+    std::vector<VehiclePropConfig> getAllPropertyConfig() const override;
+
+    StatusCode setProperty(const VehiclePropValue& value, bool updateStatus) override;
+
+  private:
+    void StartValuePollingThread();
+
+    // private data members
+
+    std::string mServiceAddr;
+    std::shared_ptr<::grpc::Channel> mGrpcChannel;
+    std::unique_ptr<vhal_proto::VehicleServer::Stub> mGrpcStub;
+    std::thread mPollingThread;
+
+    std::mutex mShutdownMutex;
+    std::condition_variable mShutdownCV;
+    std::atomic<bool> mShuttingDownFlag{false};
+};
+
+std::unique_ptr<EmulatedVehicleClient> makeGrpcVehicleClient(const std::string& addr) {
+    return std::make_unique<GrpcVehicleClientImpl>(addr);
+}
+
+std::vector<VehiclePropConfig> GrpcVehicleClientImpl::getAllPropertyConfig() const {
+    std::vector<VehiclePropConfig> configs;
+    ::grpc::ClientContext context;
+    auto config_stream = mGrpcStub->GetAllPropertyConfig(&context, ::google::protobuf::Empty());
+    vhal_proto::VehiclePropConfig protoConfig;
+    while (config_stream->Read(&protoConfig)) {
+        VehiclePropConfig config;
+        proto_msg_converter::fromProto(&config, protoConfig);
+        configs.emplace_back(std::move(config));
+    }
+    auto grpc_status = config_stream->Finish();
+    if (!grpc_status.ok()) {
+        LOG(ERROR) << __func__
+                   << ": GRPC GetAllPropertyConfig Failed: " << grpc_status.error_message();
+        configs.clear();
+    }
+
+    return configs;
+}
+
+StatusCode GrpcVehicleClientImpl::setProperty(const VehiclePropValue& value, bool updateStatus) {
+    ::grpc::ClientContext context;
+    vhal_proto::WrappedVehiclePropValue wrappedProtoValue;
+    vhal_proto::VehicleHalCallStatus vhal_status;
+    proto_msg_converter::toProto(wrappedProtoValue.mutable_value(), value);
+    wrappedProtoValue.set_update_status(updateStatus);
+
+    auto grpc_status = mGrpcStub->SetProperty(&context, wrappedProtoValue, &vhal_status);
+    if (!grpc_status.ok()) {
+        LOG(ERROR) << __func__ << ": GRPC SetProperty Failed: " << grpc_status.error_message();
+        return StatusCode::INTERNAL_ERROR;
+    }
+
+    return static_cast<StatusCode>(vhal_status.status_code());
+}
+
+void GrpcVehicleClientImpl::StartValuePollingThread() {
+    mPollingThread = std::thread([this]() {
+        while (!mShuttingDownFlag.load()) {
+            ::grpc::ClientContext context;
+
+            std::atomic<bool> rpc_ok{true};
+            std::thread shuttingdown_watcher([this, &rpc_ok, &context]() {
+                std::unique_lock<std::mutex> shutdownLock(mShutdownMutex);
+                mShutdownCV.wait(shutdownLock, [this, &rpc_ok]() {
+                    return !rpc_ok.load() || mShuttingDownFlag.load();
+                });
+                context.TryCancel();
+            });
+
+            auto value_stream =
+                    mGrpcStub->StartPropertyValuesStream(&context, ::google::protobuf::Empty());
+            vhal_proto::WrappedVehiclePropValue wrappedProtoValue;
+            while (!mShuttingDownFlag.load() && value_stream->Read(&wrappedProtoValue)) {
+                VehiclePropValue value;
+                proto_msg_converter::fromProto(&value, wrappedProtoValue.value());
+                onPropertyValue(value, wrappedProtoValue.update_status());
+            }
+
+            rpc_ok.store(false);
+            mShutdownCV.notify_all();
+            shuttingdown_watcher.join();
+
+            auto grpc_status = value_stream->Finish();
+            // never reach here until connection lost
+            LOG(ERROR) << __func__
+                       << ": GRPC Value Streaming Failed: " << grpc_status.error_message();
+
+            // try to reconnect
+        }
+    });
+}
+
+}  // namespace impl
+
+}  // namespace V2_0
+}  // namespace vehicle
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/virtualization/GrpcVehicleClient.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/virtualization/GrpcVehicleClient.h
new file mode 100644
index 0000000..14eae7f
--- /dev/null
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/virtualization/GrpcVehicleClient.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef android_hardware_automotive_vehicle_V2_0_impl_virtialization_GrpcVehicleClient_H_
+#define android_hardware_automotive_vehicle_V2_0_impl_virtialization_GrpcVehicleClient_H_
+
+#include "vhal_v2_0/EmulatedVehicleConnector.h"
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace vehicle {
+namespace V2_0 {
+
+namespace impl {
+
+std::unique_ptr<EmulatedVehicleClient> makeGrpcVehicleClient(const std::string& addr);
+
+}  // namespace impl
+
+}  // namespace V2_0
+}  // namespace vehicle
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
+
+#endif  // android_hardware_automotive_vehicle_V2_0_impl_virtialization_GrpcVehicleClient_H_
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/virtualization/GrpcVehicleServer.cpp b/automotive/vehicle/2.0/default/impl/vhal_v2_0/virtualization/GrpcVehicleServer.cpp
new file mode 100644
index 0000000..e30b3be
--- /dev/null
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/virtualization/GrpcVehicleServer.cpp
@@ -0,0 +1,229 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "GrpcVehicleServer.h"
+
+#include <condition_variable>
+#include <mutex>
+#include <shared_mutex>
+
+#include <android-base/logging.h>
+#include <grpc++/grpc++.h>
+
+#include "VehicleServer.grpc.pb.h"
+#include "VehicleServer.pb.h"
+#include "vhal_v2_0/ProtoMessageConverter.h"
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace vehicle {
+namespace V2_0 {
+
+namespace impl {
+
+class GrpcVehicleServerImpl : public GrpcVehicleServer, public vhal_proto::VehicleServer::Service {
+  public:
+    GrpcVehicleServerImpl(const std::string& addr) : mServiceAddr(addr) {
+        setValuePool(&mValueObjectPool);
+    }
+
+    // method from GrpcVehicleServer
+    void Start() override;
+
+    // method from IVehicleServer
+    void onPropertyValueFromCar(const VehiclePropValue& value, bool updateStatus) override;
+
+    // methods from vhal_proto::VehicleServer::Service
+
+    ::grpc::Status GetAllPropertyConfig(
+            ::grpc::ServerContext* context, const ::google::protobuf::Empty* request,
+            ::grpc::ServerWriter<vhal_proto::VehiclePropConfig>* stream) override;
+
+    ::grpc::Status SetProperty(::grpc::ServerContext* context,
+                               const vhal_proto::WrappedVehiclePropValue* wrappedPropValue,
+                               vhal_proto::VehicleHalCallStatus* status) override;
+
+    ::grpc::Status StartPropertyValuesStream(
+            ::grpc::ServerContext* context, const ::google::protobuf::Empty* request,
+            ::grpc::ServerWriter<vhal_proto::WrappedVehiclePropValue>* stream) override;
+
+  private:
+    // We keep long-lasting connection for streaming the prop values.
+    // For us, each connection can be represented as a function to send the new value, and
+    // an ID to identify this connection
+    struct ConnectionDescriptor {
+        using ValueWriterType = std::function<bool(const vhal_proto::WrappedVehiclePropValue&)>;
+
+        ConnectionDescriptor(ValueWriterType&& value_writer)
+            : mValueWriter(std::move(value_writer)),
+              mConnectionID(CONNECTION_ID_COUNTER.fetch_add(1)) {}
+
+        ConnectionDescriptor(const ConnectionDescriptor&) = delete;
+
+        ConnectionDescriptor& operator=(const ConnectionDescriptor&) = delete;
+
+        // This move constructor is NOT THREAD-SAFE, which means it cannot be moved
+        // while using. Since the connection descriptors are pretected by mConnectionMutex
+        // then we are fine here
+        ConnectionDescriptor(ConnectionDescriptor&& cd)
+            : mValueWriter(std::move(cd.mValueWriter)),
+              mConnectionID(cd.mConnectionID),
+              mIsAlive(cd.mIsAlive.load()) {
+            cd.mIsAlive.store(false);
+        }
+
+        ValueWriterType mValueWriter;
+        uint64_t mConnectionID;
+        std::atomic<bool> mIsAlive{true};
+
+        static std::atomic<uint64_t> CONNECTION_ID_COUNTER;
+    };
+
+    std::string mServiceAddr;
+    VehiclePropValuePool mValueObjectPool;
+    mutable std::shared_mutex mConnectionMutex;
+    mutable std::shared_mutex mWriterMutex;
+    std::list<ConnectionDescriptor> mValueStreamingConnections;
+};
+
+std::atomic<uint64_t> GrpcVehicleServerImpl::ConnectionDescriptor::CONNECTION_ID_COUNTER = 0;
+
+static std::shared_ptr<::grpc::ServerCredentials> getServerCredentials() {
+    // TODO(chenhaosjtuacm): get secured credentials here
+    return ::grpc::InsecureServerCredentials();
+}
+
+GrpcVehicleServerPtr makeGrpcVehicleServer(const std::string& addr) {
+    return std::make_unique<GrpcVehicleServerImpl>(addr);
+}
+
+void GrpcVehicleServerImpl::Start() {
+    ::grpc::ServerBuilder builder;
+    builder.RegisterService(this);
+    builder.AddListeningPort(mServiceAddr, getServerCredentials());
+    std::unique_ptr<::grpc::Server> server(builder.BuildAndStart());
+
+    server->Wait();
+}
+
+void GrpcVehicleServerImpl::onPropertyValueFromCar(const VehiclePropValue& value,
+                                                   bool updateStatus) {
+    vhal_proto::WrappedVehiclePropValue wrappedPropValue;
+    proto_msg_converter::toProto(wrappedPropValue.mutable_value(), value);
+    wrappedPropValue.set_update_status(updateStatus);
+    std::shared_lock read_lock(mConnectionMutex);
+
+    bool has_terminated_connections = 0;
+
+    for (auto& connection : mValueStreamingConnections) {
+        auto writeOK = connection.mValueWriter(wrappedPropValue);
+        if (!writeOK) {
+            LOG(ERROR) << __func__ << ": Server Write failed, connection lost. ID: "
+                       << connection.mConnectionID;
+            has_terminated_connections = true;
+            connection.mIsAlive.store(false);
+        }
+    }
+
+    if (!has_terminated_connections) {
+        return;
+    }
+
+    read_lock.unlock();
+
+    std::unique_lock write_lock(mConnectionMutex);
+
+    for (auto itr = mValueStreamingConnections.begin(); itr != mValueStreamingConnections.end();) {
+        if (!itr->mIsAlive.load()) {
+            itr = mValueStreamingConnections.erase(itr);
+        } else {
+            ++itr;
+        }
+    }
+}
+
+::grpc::Status GrpcVehicleServerImpl::GetAllPropertyConfig(
+        ::grpc::ServerContext* context, const ::google::protobuf::Empty* request,
+        ::grpc::ServerWriter<vhal_proto::VehiclePropConfig>* stream) {
+    auto configs = onGetAllPropertyConfig();
+    for (auto& config : configs) {
+        vhal_proto::VehiclePropConfig protoConfig;
+        proto_msg_converter::toProto(&protoConfig, config);
+        if (!stream->Write(protoConfig)) {
+            return ::grpc::Status(::grpc::StatusCode::ABORTED, "Connection lost.");
+        }
+    }
+
+    return ::grpc::Status::OK;
+}
+
+::grpc::Status GrpcVehicleServerImpl::SetProperty(
+        ::grpc::ServerContext* context, const vhal_proto::WrappedVehiclePropValue* wrappedPropValue,
+        vhal_proto::VehicleHalCallStatus* status) {
+    VehiclePropValue value;
+    proto_msg_converter::fromProto(&value, wrappedPropValue->value());
+
+    auto set_status = static_cast<int32_t>(onSetProperty(value, wrappedPropValue->update_status()));
+    if (!vhal_proto::VehicleHalStatusCode_IsValid(set_status)) {
+        return ::grpc::Status(::grpc::StatusCode::INTERNAL, "Unknown status code");
+    }
+
+    status->set_status_code(static_cast<vhal_proto::VehicleHalStatusCode>(set_status));
+
+    return ::grpc::Status::OK;
+}
+
+::grpc::Status GrpcVehicleServerImpl::StartPropertyValuesStream(
+        ::grpc::ServerContext* context, const ::google::protobuf::Empty* request,
+        ::grpc::ServerWriter<vhal_proto::WrappedVehiclePropValue>* stream) {
+    std::mutex terminateMutex;
+    std::condition_variable terminateCV;
+    std::unique_lock<std::mutex> terminateLock(terminateMutex);
+    bool terminated{false};
+
+    auto callBack = [stream, &terminateMutex, &terminateCV, &terminated,
+                     this](const vhal_proto::WrappedVehiclePropValue& value) {
+        std::unique_lock lock(mWriterMutex);
+        if (!stream->Write(value)) {
+            std::unique_lock<std::mutex> terminateLock(terminateMutex);
+            terminated = true;
+            terminateLock.unlock();
+            terminateCV.notify_all();
+            return false;
+        }
+        return true;
+    };
+
+    // Register connection
+    std::unique_lock lock(mConnectionMutex);
+    auto& conn = mValueStreamingConnections.emplace_back(std::move(callBack));
+    lock.unlock();
+
+    // Never stop until connection lost
+    terminateCV.wait(terminateLock, [&terminated]() { return terminated; });
+
+    LOG(ERROR) << __func__ << ": Stream lost, ID : " << conn.mConnectionID;
+
+    return ::grpc::Status(::grpc::StatusCode::ABORTED, "Connection lost.");
+}
+
+}  // namespace impl
+
+}  // namespace V2_0
+}  // namespace vehicle
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/virtualization/GrpcVehicleServer.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/virtualization/GrpcVehicleServer.h
new file mode 100644
index 0000000..32f4eb2
--- /dev/null
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/virtualization/GrpcVehicleServer.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef android_hardware_automotive_vehicle_V2_0_impl_virtialization_GrpcVehicleServer_H_
+#define android_hardware_automotive_vehicle_V2_0_impl_virtialization_GrpcVehicleServer_H_
+
+#include "vhal_v2_0/EmulatedVehicleConnector.h"
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace vehicle {
+namespace V2_0 {
+
+namespace impl {
+
+// Connect to the Vehicle Client via GRPC
+class GrpcVehicleServer : public EmulatedVehicleServer {
+  public:
+    // Start listening incoming calls, should never return if working normally
+    virtual void Start() = 0;
+};
+
+using GrpcVehicleServerPtr = std::unique_ptr<GrpcVehicleServer>;
+
+GrpcVehicleServerPtr makeGrpcVehicleServer(const std::string& addr);
+
+}  // namespace impl
+
+}  // namespace V2_0
+}  // namespace vehicle
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
+
+#endif  // android_hardware_automotive_vehicle_V2_0_impl_virtialization_GrpcVehicleServer_H_
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/virtualization/Utils.cpp b/automotive/vehicle/2.0/default/impl/vhal_v2_0/virtualization/Utils.cpp
new file mode 100644
index 0000000..41d4827
--- /dev/null
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/virtualization/Utils.cpp
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Utils.h"
+
+#include <sstream>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace vehicle {
+namespace V2_0 {
+namespace impl {
+
+std::string getVsockUri(const VsockServerInfo& serverInfo) {
+    std::stringstream uri_stream;
+    uri_stream << "vsock:" << serverInfo.serverCid << ":" << serverInfo.serverPort;
+    return uri_stream.str();
+}
+
+}  // namespace impl
+}  // namespace V2_0
+}  // namespace vehicle
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
diff --git a/automotive/vehicle/2.0/default/impl/vhal_v2_0/virtualization/Utils.h b/automotive/vehicle/2.0/default/impl/vhal_v2_0/virtualization/Utils.h
new file mode 100644
index 0000000..6b1049c
--- /dev/null
+++ b/automotive/vehicle/2.0/default/impl/vhal_v2_0/virtualization/Utils.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef android_hardware_automotive_vehicle_V2_0_impl_virtualization_Utils_H_
+#define android_hardware_automotive_vehicle_V2_0_impl_virtualization_Utils_H_
+
+#include <string>
+
+namespace android {
+namespace hardware {
+namespace automotive {
+namespace vehicle {
+namespace V2_0 {
+namespace impl {
+
+struct VsockServerInfo {
+    unsigned int serverCid{0};
+    unsigned int serverPort{0};
+};
+
+std::string getVsockUri(const VsockServerInfo& serverInfo);
+
+}  // namespace impl
+}  // namespace V2_0
+}  // namespace vehicle
+}  // namespace automotive
+}  // namespace hardware
+}  // namespace android
+
+#endif  // android_hardware_automotive_vehicle_V2_0_impl_virtualization_Utils_H_
diff --git a/automotive/vehicle/2.0/types.hal b/automotive/vehicle/2.0/types.hal
index 0f20dd1..6145ea2 100644
--- a/automotive/vehicle/2.0/types.hal
+++ b/automotive/vehicle/2.0/types.hal
@@ -35,6 +35,21 @@
     /**
      * Any combination of scalar or vector types. The exact format must be
      * provided in the description of the property.
+     *
+     * For vendor MIXED type properties, configArray needs to be formatted in this
+     * structure.
+     * configArray[0], 1 indicates the property has a String value
+     * configArray[1], 1 indicates the property has a Boolean value .
+     * configArray[2], 1 indicates the property has an Integer value.
+     * configArray[3], the number indicates the size of Integer[] in the property.
+     * configArray[4], 1 indicates the property has a Long value.
+     * configArray[5], the number indicates the size of Long[] in the property.
+     * configArray[6], 1 indicates the property has a Float value.
+     * configArray[7], the number indicates the size of Float[] in the property.
+     * configArray[8], the number indicates the size of byte[] in the property.
+     * For example:
+     * {@code configArray = {1, 1, 1, 3, 0, 0, 0, 0, 0}} indicates the property has
+     * a String value, a Boolean value, an Integer value and an array with 3 integers.
      */
     MIXED           = 0x00e00000,
 
@@ -283,6 +298,28 @@
         | VehicleArea:SEAT),
 
     /**
+     * Exterior dimensions of vehicle.
+     *
+     *  int32Values[0] = height
+     *  int32Values[1] = length
+     *  int32Values[2] = width
+     *  int32Values[3] = width including mirrors
+     *  int32Values[4] = wheel base
+     *  int32Values[5] = track width front
+     *  int32Values[6] = track width rear
+     *  int32Values[7] = curb to curb turning radius
+     *
+     * @change_mode VehiclePropertyChangeMode:STATIC
+     * @access VehiclePropertyAccess:READ
+     * @unit VehicleUnit:MILLIMETER
+     */
+    INFO_EXTERIOR_DIMENSIONS = (
+        0x010B
+        | VehiclePropertyGroup:SYSTEM
+        | VehiclePropertyType:INT32_VEC
+        | VehicleArea:GLOBAL),
+
+    /**
      * Current odometer value of the vehicle
      *
      * @change_mode VehiclePropertyChangeMode:CONTINUOUS
@@ -325,7 +362,7 @@
         | VehicleArea:GLOBAL),
 
     /**
-     * Steering angle of the vehicle
+     * Front bicycle model steering angle for vehicle
      *
      * Angle is in degrees.  Left is negative.
      *
@@ -340,6 +377,21 @@
         | VehicleArea:GLOBAL),
 
     /**
+     * Rear bicycle model steering angle for vehicle
+     *
+     * Angle is in degrees.  Left is negative.
+     *
+     * @change_mode VehiclePropertyChangeMode:CONTINUOUS
+     * @access VehiclePropertyAccess:READ
+     * @unit VehicleUnit:DEGREES
+     */
+    PERF_REAR_STEERING_ANGLE = (
+        0x0210
+        | VehiclePropertyGroup:SYSTEM
+        | VehiclePropertyType:FLOAT
+        | VehicleArea:GLOBAL),
+
+    /**
      * Temperature of engine coolant
      *
      * @change_mode VehiclePropertyChangeMode:CONTINUOUS
@@ -799,7 +851,7 @@
         | VehicleArea:SEAT),
 
     /**
-     * On/off defrost for designated window
+     * Fan-based defrost for designated window.
      *
      * @change_mode VehiclePropertyChangeMode:ON_CHANGE
      * @access VehiclePropertyAccess:READ_WRITE
@@ -1076,6 +1128,7 @@
      *
      * @change_mode VehiclePropertyChangeMode:STATIC
      * @access VehiclePropertyAccess:READ
+     * @data_enum VehicleHvacFanDirection
      */
     HVAC_FAN_DIRECTION_AVAILABLE = (
         0x0511
@@ -1118,6 +1171,18 @@
         | VehiclePropertyType:INT32
         | VehicleArea:SEAT),
 
+    /**
+     * Electric defrosters' status
+     *
+     * @change_mode VehiclePropertyChangeMode:ON_CHANGE
+     * @access VehiclePropertyAccess:READ_WRITE
+     */
+    HVAC_ELECTRIC_DEFROSTER_ON = (
+        0x0514
+        | VehiclePropertyGroup:SYSTEM
+        | VehiclePropertyType:BOOLEAN
+        | VehicleArea:WINDOW),
+
    /**
      * Distance units for display
      *
@@ -2321,6 +2386,116 @@
         | VehiclePropertyType:INT32
         | VehicleArea:SEAT),
 
+    /**
+     * Support customize permissions for vendor properties
+     *
+     * Implement this property if vehicle hal support customize vendor permissions feature.
+     * VehiclePropConfig.configArray is used to indicate vendor properties and permissions
+     * which selected for this vendor property. The permission must be one of enum in
+     * VehicleVendorPermission.
+     * The configArray is set as follows:
+     *      configArray[n] = propId : property ID for the vendor property
+     *      configArray[n+1] = one of enums in VehicleVendorPermission. It indicates the permission
+     *      for reading value of the property.
+     *      configArray[n+2] = one of enums in VehicleVendorPermission. It indicates the permission
+     *      for writing value of the property.
+     *
+     * For example:
+     * configArray = {
+     *      vendor_prop_1, PERMISSION_VENDOR_SEAT_READ, PERMISSION_VENDOR_SEAT_WRITE,
+     *      vendor_prop_2, PERMISSION_VENDOR_INFO, PERMISSION_NOT_ACCESSIBLE,
+     * }
+     * If vendor properties are not in this array, they will have the default vendor permission.
+     * If vendor chose PERMISSION_NOT_ACCESSIBLE, android will not have access to the property. In
+     * the example, Android can not write value for vendor_prop_2.
+     *
+     * @change_mode VehiclePropertyChangeMode:STATIC
+     * @access VehiclePropertyAccess:READ
+     */
+    SUPPORT_CUSTOMIZE_VENDOR_PERMISSION = (
+        0x0F05
+        | VehiclePropertyGroup:SYSTEM
+        | VehiclePropertyType:BOOLEAN
+        | VehicleArea:GLOBAL),
+
+    /**
+     * Allow disabling optional featurs from vhal.
+     *
+     * This property reports optional features that should be disabled.
+     * All allowed optional features for the system is declared in Car service overlay,
+     * config_allowed_optional_car_features.
+     * This property allows disabling features defined in the overlay. Without this property,
+     * all the features declared in the overlay will be enabled.
+     *
+     * Value read should include all features disabled with ',' separation.
+     * ex) "com.android.car.user.CarUserNoticeService,storage_monitoring"
+     * @change_mode VehiclePropertyChangeMode:STATIC
+     * @access VehiclePropertyAccess:READ
+     */
+    DISABLED_OPTIONAL_FEATURES = (
+        0x0F06
+        | VehiclePropertyGroup:SYSTEM
+        | VehiclePropertyType:STRING
+        | VehicleArea:GLOBAL),
+
+};
+
+/**
+ * Used by SUPPORT_CUSTOMIZE_VENDOR_PERMISSION to indicate the permission of vendor properties.
+ */
+enum VehicleVendorPermission : int32_t {
+    PERMISSION_DEFAULT = 0x00000000,
+
+    // permissions for the property related with window
+    PERMISSION_SET_VENDOR_CATEGORY_WINDOW= 0X00000001,
+    PERMISSION_GET_VENDOR_CATEGORY_WINDOW = 0x00000002,
+    // permissions for the property related with door
+    PERMISSION_SET_VENDOR_CATEGORY_DOOR  = 0x00000003,
+    PERMISSION_GET_VENDOR_CATEGORY_DOOR   = 0x00000004,
+    // permissions for the property related with seat
+    PERMISSION_SET_VENDOR_CATEGORY_SEAT  = 0x00000005,
+    PERMISSION_GET_VENDOR_CATEGORY_SEAT   = 0x00000006,
+    // permissions for the property related with mirror
+    PERMISSION_SET_VENDOR_CATEGORY_MIRROR= 0x00000007,
+    PERMISSION_GET_VENDOR_CATEGORY_MIRROR = 0x00000008,
+
+    // permissions for the property related with car's information
+    PERMISSION_SET_VENDOR_CATEGORY_INFO  = 0x00000009,
+    PERMISSION_GET_VENDOR_CATEGORY_INFO   = 0x0000000A,
+    // permissions for the property related with car's engine
+    PERMISSION_SET_VENDOR_CATEGORY_ENGINE= 0x0000000B,
+    PERMISSION_GET_VENDOR_CATEGORY_ENGINE = 0x0000000C,
+    // permissions for the property related with car's HVAC
+    PERMISSION_SET_VENDOR_CATEGORY_HVAC  = 0x0000000D,
+    PERMISSION_GET_VENDOR_CATEGORY_HVAC   = 0x0000000E,
+    // permissions for the property related with car's light
+    PERMISSION_SET_VENDOR_CATEGORY_LIGHT = 0x0000000F,
+    PERMISSION_GET_VENDOR_CATEGORY_LIGHT  = 0x00000010,
+
+    // permissions reserved for other vendor permission
+    PERMISSION_SET_VENDOR_CATEGORY_1  = 0x00010000,
+    PERMISSION_GET_VENDOR_CATEGORY_1   = 0x00011000,
+    PERMISSION_SET_VENDOR_CATEGORY_2  = 0x00020000,
+    PERMISSION_GET_VENDOR_CATEGORY_2   = 0x00021000,
+    PERMISSION_SET_VENDOR_CATEGORY_3  = 0x00030000,
+    PERMISSION_GET_VENDOR_CATEGORY_3   = 0x00031000,
+    PERMISSION_SET_VENDOR_CATEGORY_4  = 0x00040000,
+    PERMISSION_GET_VENDOR_CATEGORY_4   = 0x00041000,
+    PERMISSION_SET_VENDOR_CATEGORY_5  = 0x00050000,
+    PERMISSION_GET_VENDOR_CATEGORY_5   = 0x00051000,
+    PERMISSION_SET_VENDOR_CATEGORY_6  = 0x00060000,
+    PERMISSION_GET_VENDOR_CATEGORY_6   = 0x00061000,
+    PERMISSION_SET_VENDOR_CATEGORY_7  = 0x00070000,
+    PERMISSION_GET_VENDOR_CATEGORY_7   = 0x00071000,
+    PERMISSION_SET_VENDOR_CATEGORY_8  = 0x00080000,
+    PERMISSION_GET_VENDOR_CATEGORY_8   = 0x00081000,
+    PERMISSION_SET_VENDOR_CATEGORY_9  = 0x00090000,
+    PERMISSION_GET_VENDOR_CATEGORY_9   = 0x00091000,
+    PERMISSION_SET_VENDOR_CATEGORY_10 = 0x000A0000,
+    PERMISSION_GET_VENDOR_CATEGORY_10  = 0x000A1000,
+
+    // Indicate not available for android to access.
+    PERMISSION_NOT_ACCESSIBLE = 0xF0000000
 };
 
 /**
@@ -2458,9 +2633,19 @@
  * Bit flags for fan direction
  */
 enum VehicleHvacFanDirection : int32_t {
+    UNKNOWN = 0x0,
+
     FACE = 0x1,
     FLOOR = 0x2,
+    /**
+     * FACE_AND_FLOOR = FACE | FLOOR
+     */
+    FACE_AND_FLOOR = 0x3,
     DEFROST = 0x4,
+    /**
+     * DEFROST_AND_FLOOR = DEFROST | FLOOR
+     */
+    DEFROST_AND_FLOOR = 0x06,
 };
 
 enum VehicleOilLevel : int32_t {
@@ -2499,7 +2684,7 @@
      * power controller must change power state to this state to shutdown
      * system.
      *
-     * int32Values[1] : one of enum_vehicle_ap_power_state_shutdown_param_type
+     * int32Values[1] : one of VehicleApPowerStateShutdownParam
      *
      * SHUTDOWN_PRPARE may be requested from either WAIT_FOR_VHAL or ON states.
      */
@@ -2531,6 +2716,11 @@
 
     /** AP can only shutdown with postponing allowed. */
     SHUTDOWN_ONLY = 3,
+
+    /**
+     * AP may enter deep sleep, but must either sleep or shut down immediately.
+     * Postponing is not allowed. */
+    SLEEP_IMMEDIATELY = 4,
 };
 
 enum VehicleApPowerStateReport : int32_t {
@@ -2723,6 +2913,8 @@
  * Various gears which can be selected by user and chosen in system.
  */
 enum VehicleGear : int32_t {
+    GEAR_UNKNOWN = 0x0000,
+
     GEAR_NEUTRAL = 0x0001,
     GEAR_REVERSE = 0x0002,
     GEAR_PARK = 0x0004,
@@ -3541,4 +3733,3 @@
 enum VmsPublisherInformationIntegerValuesIndex : VmsBaseMessageIntegerValuesIndex {
     PUBLISHER_ID = 1,
 };
-
diff --git a/biometrics/face/1.1/Android.bp b/biometrics/face/1.1/Android.bp
new file mode 100644
index 0000000..2206597
--- /dev/null
+++ b/biometrics/face/1.1/Android.bp
@@ -0,0 +1,17 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.biometrics.face@1.1",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "IBiometricsFace.hal",
+    ],
+    interfaces: [
+        "android.hardware.biometrics.face@1.0",
+        "android.hidl.base@1.0",
+    ],
+    gen_java: true,
+}
diff --git a/biometrics/face/1.1/IBiometricsFace.hal b/biometrics/face/1.1/IBiometricsFace.hal
new file mode 100644
index 0000000..84e7443
--- /dev/null
+++ b/biometrics/face/1.1/IBiometricsFace.hal
@@ -0,0 +1,117 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.biometrics.face@1.1;
+
+import @1.0::IBiometricsFace;
+import @1.0::Status;
+import @1.0::Feature;
+
+/**
+ * The HAL interface for biometric face authentication.
+ */
+interface IBiometricsFace extends @1.0::IBiometricsFace {
+    /**
+     * Enrolls a user's face for a remote client, for example Android Auto.
+     *
+     * The HAL implementation is responsible for creating a secure communication
+     * channel and receiving the enrollment images from a mobile device with
+     * face authentication hardware.
+     *
+     * Note that the Hardware Authentication Token must be valid for the
+     * duration of enrollment and thus should be explicitly invalidated by a
+     * call to revokeChallenge() when enrollment is complete, to reduce the
+     * window of opportunity to re-use the challenge and HAT. For example,
+     * Settings calls generateChallenge() once to allow the user to enroll one
+     * or more faces or toggle secure settings without having to re-enter the
+     * PIN/pattern/password. Once the user completes the operation, Settings
+     * invokes revokeChallenge() to close the transaction. If the HAT is expired,
+     * the implementation must invoke onError with UNABLE_TO_PROCESS.
+     *
+     * Requirements for using this API:
+     * - Mobile devices MUST NOT delegate enrollment to another device by calling
+     * this API. This feature is intended only to allow enrollment on devices
+     * where it is impossible to enroll locally on the device.
+     * - The path MUST be protected by a secret key with rollback protection.
+     * - Synchronizing between devices MUST be accomplished by having both
+     * devices agree on a secret PIN entered by the user (similar to BT
+     * pairing procedure) and use a salted version of that PIN plus other secret
+     * to encrypt traffic.
+     * - All communication to/from the remote device MUST be encrypted and signed
+     * to prevent image injection and other man-in-the-middle type attacks.
+     * - generateChallenge() and revokeChallenge() MUST be implemented on both
+     * remote and local host (e.g. hash the result of the remote host with a
+     * local secret before responding to the API call) and any transmission of
+     * the challenge between hosts MUST be signed to prevent man-in-the-middle
+     * attacks.
+     * - In the event of a lost connection, the result of the last
+     * generateChallenge() MUST be invalidated and the process started over.
+     * - Both the remote and local host MUST honor the timeout and invalidate the
+     * challenge.
+     *
+     * This method triggers the IBiometricsFaceClientCallback#onEnrollResult()
+     * method.
+     *
+     * @param hat A valid Hardware Authentication Token, generated as a result
+     *     of a generateChallenge() challenge being wrapped by the gatekeeper
+     *     after a successful strong authentication request.
+     * @param timeoutSec A timeout in seconds, after which this enroll
+     *     attempt is cancelled. Note that the framework can continue
+     *     enrollment by calling this again with a valid HAT. This timeout is
+     *     expected to be used to limit power usage if the device becomes idle
+     *     during enrollment. The implementation is expected to send
+     *     ERROR_TIMEOUT if this happens.
+     * @param disabledFeatures A list of features to be disabled during
+     *     enrollment. Note that all features are enabled by default.
+     * @return status The status of this method call.
+     */
+    enrollRemotely(vec<uint8_t> hat, uint32_t timeoutSec, vec<Feature> disabledFeatures)
+        generates (Status status);
+
+    /**
+     * Enrolls a user's face.
+     *
+     * Note that the Hardware Authentication Token must be valid for the
+     * duration of enrollment and thus should be explicitly invalidated by a
+     * call to revokeChallenge() when enrollment is complete, to reduce the
+     * window of opportunity to re-use the challenge and HAT. For example,
+     * Settings calls generateChallenge() once to allow the user to enroll one
+     * or more faces or toggle secure settings without having to re-enter the
+     * PIN/pattern/password. Once the user completes the operation, Settings
+     * invokes revokeChallenge() to close the transaction. If the HAT is expired,
+     * the implementation must invoke onError with UNABLE_TO_PROCESS.
+     *
+     * This method triggers the IBiometricsFaceClientCallback#onEnrollResult()
+     * method.
+     *
+     * @param hat A valid Hardware Authentication Token, generated as a result
+     *     of a generateChallenge() challenge being wrapped by the gatekeeper
+     *     after a successful strong authentication request.
+     * @param timeoutSec A timeout in seconds, after which this enroll
+     *     attempt is cancelled. Note that the framework can continue
+     *     enrollment by calling this again with a valid HAT. This timeout is
+     *     expected to be used to limit power usage if the device becomes idle
+     *     during enrollment. The implementation is expected to send
+     *     ERROR_TIMEOUT if this happens.
+     * @param disabledFeatures A list of features to be disabled during
+     *     enrollment. Note that all features are enabled by default.
+     * @param windowId optional ID of a camera preview window for a
+     *     single-camera device. Must be null if not used.
+     * @return status The status of this method call.
+     */
+    enroll_1_1(vec<uint8_t> hat, uint32_t timeoutSec, vec<Feature> disabledFeatures,
+        handle windowId) generates (Status status);
+};
diff --git a/biometrics/face/1.1/default/Android.bp b/biometrics/face/1.1/default/Android.bp
new file mode 100644
index 0000000..360071f
--- /dev/null
+++ b/biometrics/face/1.1/default/Android.bp
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+cc_binary {
+    name: "android.hardware.biometrics.face@1.1-service.example",
+    defaults: ["hidl_defaults"],
+    vendor: true,
+    init_rc: ["android.hardware.biometrics.face@1.1-service.rc"],
+    vintf_fragments: ["manifest_face_default.xml"],
+    relative_install_path: "hw",
+    proprietary: true,
+    srcs: [
+        "BiometricsFace.cpp",
+        "service.cpp",
+    ],
+    shared_libs: [
+        "libhidlbase",
+        "libutils",
+        "liblog",
+        "android.hardware.biometrics.face@1.0",
+        "android.hardware.biometrics.face@1.1",
+    ],
+}
diff --git a/biometrics/face/1.1/default/BiometricsFace.cpp b/biometrics/face/1.1/default/BiometricsFace.cpp
new file mode 100644
index 0000000..2143880
--- /dev/null
+++ b/biometrics/face/1.1/default/BiometricsFace.cpp
@@ -0,0 +1,129 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "BiometricsFace.h"
+
+namespace android::hardware::biometrics::face::implementation {
+using android::hardware::biometrics::face::V1_0::FaceError;
+using android::hardware::biometrics::face::V1_0::OptionalUint64;
+
+// Arbitrary value.
+constexpr uint64_t kDeviceId = 123;
+// Arbitrary value.
+constexpr uint64_t kAuthenticatorId = 987;
+// Arbitrary value.
+constexpr uint64_t kLockoutDuration = 555;
+
+BiometricsFace::BiometricsFace() : mRandom(std::mt19937::default_seed) {}
+
+// Methods from IBiometricsFace follow.
+Return<void> BiometricsFace::setCallback(const sp<IBiometricsFaceClientCallback>& clientCallback,
+                                         setCallback_cb _hidl_cb) {
+    mClientCallback = clientCallback;
+    _hidl_cb({Status::OK, kDeviceId});
+    return Void();
+}
+
+Return<Status> BiometricsFace::setActiveUser(int32_t userId, const hidl_string& storePath) {
+    if (userId < 0 || storePath.empty() || std::string(storePath).find("/data") != 0) {
+        return Status::ILLEGAL_ARGUMENT;
+    }
+    mUserId = userId;
+    mClientCallback->onLockoutChanged(kLockoutDuration);
+    return Status::OK;
+}
+
+Return<void> BiometricsFace::generateChallenge(uint32_t /* challengeTimeoutSec */,
+                                               generateChallenge_cb _hidl_cb) {
+    std::uniform_int_distribution<uint64_t> dist;
+    _hidl_cb({Status::OK, dist(mRandom)});
+    return Void();
+}
+
+Return<Status> BiometricsFace::enroll(const hidl_vec<uint8_t>& /* hat */, uint32_t /* timeoutSec */,
+                                      const hidl_vec<Feature>& /* disabledFeatures */) {
+    // hat can never be valid in this implementation.
+    mClientCallback->onError(kDeviceId, mUserId, FaceError::UNABLE_TO_PROCESS, 0 /* vendorCode */);
+    return Status::OK;
+}
+
+Return<Status> BiometricsFace::revokeChallenge() {
+    return Status::OK;
+}
+
+Return<Status> BiometricsFace::setFeature(Feature /* feature */, bool /* enabled */,
+                                          const hidl_vec<uint8_t>& /* hat */,
+                                          uint32_t /* faceId */) {
+    // hat can never be valid in this implementation.
+    return Status::ILLEGAL_ARGUMENT;
+}
+
+Return<void> BiometricsFace::getFeature(Feature /* feature */, uint32_t /* faceId */,
+                                        getFeature_cb _hidl_cb) {
+    // hat can never be valid in this implementation.
+    _hidl_cb({Status::ILLEGAL_ARGUMENT, false});
+    return Void();
+}
+
+Return<void> BiometricsFace::getAuthenticatorId(getAuthenticatorId_cb _hidl_cb) {
+    _hidl_cb({Status::OK, kAuthenticatorId});
+    return Void();
+}
+
+Return<Status> BiometricsFace::cancel() {
+    mClientCallback->onError(kDeviceId, mUserId, FaceError::CANCELED, 0 /* vendorCode */);
+    return Status::OK;
+}
+
+Return<Status> BiometricsFace::enumerate() {
+    mClientCallback->onEnumerate(kDeviceId, {}, mUserId);
+    return Status::OK;
+}
+
+Return<Status> BiometricsFace::remove(uint32_t /* faceId */) {
+    return Status::OK;
+}
+
+Return<Status> BiometricsFace::authenticate(uint64_t /* operationId */) {
+    mClientCallback->onError(kDeviceId, mUserId, FaceError::HW_UNAVAILABLE, 0 /* vendorCode */);
+    return Status::OK;
+}
+
+Return<Status> BiometricsFace::userActivity() {
+    return Status::OK;
+}
+
+Return<Status> BiometricsFace::resetLockout(const hidl_vec<uint8_t>& /* hat */) {
+    return Status::OK;
+}
+
+// Methods from ::android::hardware::biometrics::face::V1_1::IBiometricsFace follow.
+Return<Status> BiometricsFace::enroll_1_1(const hidl_vec<uint8_t>& /* hat */,
+                                          uint32_t /* timeoutSec */,
+                                          const hidl_vec<Feature>& /* disabledFeatures */,
+                                          const hidl_handle& /* windowId */) {
+    mClientCallback->onError(kDeviceId, mUserId, FaceError::UNABLE_TO_PROCESS, 0 /* vendorCode */);
+    return Status::OK;
+}
+
+Return<Status> BiometricsFace::enrollRemotely(const hidl_vec<uint8_t>& /* hat */,
+                                              uint32_t /* timeoutSec */,
+                                              const hidl_vec<Feature>& /* disabledFeatures */) {
+    mClientCallback->onError(kDeviceId, mUserId, FaceError::UNABLE_TO_PROCESS, 0 /* vendorCode */);
+    return Status::OK;
+}
+
+}  // namespace android::hardware::biometrics::face::implementation
diff --git a/biometrics/face/1.1/default/BiometricsFace.h b/biometrics/face/1.1/default/BiometricsFace.h
new file mode 100644
index 0000000..5ce5771
--- /dev/null
+++ b/biometrics/face/1.1/default/BiometricsFace.h
@@ -0,0 +1,88 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android/hardware/biometrics/face/1.1/IBiometricsFace.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+#include <random>
+
+namespace android::hardware::biometrics::face::implementation {
+
+using ::android::sp;
+using ::android::hardware::hidl_array;
+using ::android::hardware::hidl_memory;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::biometrics::face::V1_0::Feature;
+using ::android::hardware::biometrics::face::V1_0::IBiometricsFaceClientCallback;
+using ::android::hardware::biometrics::face::V1_0::Status;
+
+class BiometricsFace : public V1_1::IBiometricsFace {
+  public:
+    BiometricsFace();
+
+    // Methods from ::android::hardware::biometrics::face::V1_0::IBiometricsFace follow.
+    Return<void> setCallback(const sp<IBiometricsFaceClientCallback>& clientCallback,
+                             setCallback_cb _hidl_cb) override;
+
+    Return<Status> setActiveUser(int32_t userId, const hidl_string& storePath) override;
+
+    Return<void> generateChallenge(uint32_t challengeTimeoutSec,
+                                   generateChallenge_cb _hidl_cb) override;
+
+    Return<Status> enroll(const hidl_vec<uint8_t>& hat, uint32_t timeoutSec,
+                          const hidl_vec<Feature>& disabledFeatures) override;
+
+    Return<Status> revokeChallenge() override;
+
+    Return<Status> setFeature(Feature feature, bool enabled, const hidl_vec<uint8_t>& hat,
+                              uint32_t faceId) override;
+
+    Return<void> getFeature(Feature feature, uint32_t faceId, getFeature_cb _hidl_cb) override;
+
+    Return<void> getAuthenticatorId(getAuthenticatorId_cb _hidl_cb) override;
+
+    Return<Status> cancel() override;
+
+    Return<Status> enumerate() override;
+
+    Return<Status> remove(uint32_t faceId) override;
+
+    Return<Status> authenticate(uint64_t operationId) override;
+
+    Return<Status> userActivity() override;
+
+    Return<Status> resetLockout(const hidl_vec<uint8_t>& hat) override;
+
+    // Methods from ::android::hardware::biometrics::face::V1_1::IBiometricsFace follow.
+    Return<Status> enroll_1_1(const hidl_vec<uint8_t>& hat, uint32_t timeoutSec,
+                              const hidl_vec<Feature>& disabledFeatures,
+                              const hidl_handle& windowId) override;
+
+    Return<Status> enrollRemotely(const hidl_vec<uint8_t>& hat, uint32_t timeoutSec,
+                                  const hidl_vec<Feature>& disabledFeatures) override;
+
+  private:
+    std::mt19937 mRandom;
+    int32_t mUserId;
+    sp<IBiometricsFaceClientCallback> mClientCallback;
+};
+
+}  // namespace android::hardware::biometrics::face::implementation
diff --git a/biometrics/face/1.1/default/android.hardware.biometrics.face@1.1-service.rc b/biometrics/face/1.1/default/android.hardware.biometrics.face@1.1-service.rc
new file mode 100644
index 0000000..687e2d8
--- /dev/null
+++ b/biometrics/face/1.1/default/android.hardware.biometrics.face@1.1-service.rc
@@ -0,0 +1,10 @@
+service vendor.face-hal-1-1-default /vendor/bin/hw/android.hardware.biometrics.face@1.1-service.example
+    # "class hal" causes a race condition on some devices due to files created
+    # in /data. As a workaround, postpone startup until later in boot once
+    # /data is mounted.
+    class late_start
+    user system
+    group system
+    writepid /dev/cpuset/foreground/tasks
+    capabilities SYS_NICE
+    rlimit rtprio 10 10
diff --git a/biometrics/face/1.1/default/manifest_face_default.xml b/biometrics/face/1.1/default/manifest_face_default.xml
new file mode 100644
index 0000000..ec71d9c
--- /dev/null
+++ b/biometrics/face/1.1/default/manifest_face_default.xml
@@ -0,0 +1,11 @@
+<manifest version="2.0" type="device">
+    <hal format="hidl">
+        <name>android.hardware.biometrics.face</name>
+        <transport>hwbinder</transport>
+        <version>1.1</version>
+        <interface>
+            <name>IBiometricsFace</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+</manifest>
diff --git a/biometrics/face/1.1/default/service.cpp b/biometrics/face/1.1/default/service.cpp
new file mode 100644
index 0000000..344bdb9
--- /dev/null
+++ b/biometrics/face/1.1/default/service.cpp
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "android.hardware.biometrics.face@1.1-service"
+
+#include <android/hardware/biometrics/face/1.0/types.h>
+#include <android/hardware/biometrics/face/1.1/IBiometricsFace.h>
+#include <android/log.h>
+#include <hidl/HidlSupport.h>
+#include <hidl/HidlTransportSupport.h>
+#include "BiometricsFace.h"
+
+using android::sp;
+using android::hardware::configureRpcThreadpool;
+using android::hardware::joinRpcThreadpool;
+using android::hardware::biometrics::face::implementation::BiometricsFace;
+using android::hardware::biometrics::face::V1_1::IBiometricsFace;
+
+int main() {
+    ALOGI("BiometricsFace HAL is being started.");
+
+    configureRpcThreadpool(1, true /*callerWillJoin*/);
+
+    android::sp<IBiometricsFace> face = new BiometricsFace();
+    const android::status_t status = face->registerAsService();
+
+    if (status != android::OK) {
+        ALOGE("Error starting the BiometricsFace HAL.");
+        return 1;
+    }
+
+    ALOGI("BiometricsFace HAL has started successfully.");
+    joinRpcThreadpool();
+
+    ALOGI("BiometricsFace HAL is terminating.");
+    return 1;  // should never get here
+}
diff --git a/biometrics/face/1.1/vts/functional/Android.bp b/biometrics/face/1.1/vts/functional/Android.bp
new file mode 100644
index 0000000..ccbb399
--- /dev/null
+++ b/biometrics/face/1.1/vts/functional/Android.bp
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+cc_test {
+    name: "VtsHalBiometricsFaceV1_1TargetTest",
+    defaults: ["VtsHalTargetTestDefaults"],
+    srcs: ["VtsHalBiometricsFaceV1_1TargetTest.cpp"],
+    static_libs: [
+        "android.hardware.biometrics.face@1.0",
+        "android.hardware.biometrics.face@1.1",
+    ],
+    test_suites: [
+        "general-tests",
+        "vts-core",
+    ],
+}
diff --git a/biometrics/face/1.1/vts/functional/VtsHalBiometricsFaceV1_1TargetTest.cpp b/biometrics/face/1.1/vts/functional/VtsHalBiometricsFaceV1_1TargetTest.cpp
new file mode 100644
index 0000000..6ada442
--- /dev/null
+++ b/biometrics/face/1.1/vts/functional/VtsHalBiometricsFaceV1_1TargetTest.cpp
@@ -0,0 +1,205 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "biometrics_face_hidl_hal_test"
+
+#include <android/hardware/biometrics/face/1.0/IBiometricsFaceClientCallback.h>
+#include <android/hardware/biometrics/face/1.1/IBiometricsFace.h>
+
+#include <VtsHalHidlTargetCallbackBase.h>
+#include <android-base/logging.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
+
+#include <chrono>
+#include <cstdint>
+#include <random>
+
+using android::sp;
+using android::hardware::hidl_handle;
+using android::hardware::hidl_vec;
+using android::hardware::Return;
+using android::hardware::Void;
+using android::hardware::biometrics::face::V1_0::FaceAcquiredInfo;
+using android::hardware::biometrics::face::V1_0::FaceError;
+using android::hardware::biometrics::face::V1_0::IBiometricsFaceClientCallback;
+using android::hardware::biometrics::face::V1_0::OptionalUint64;
+using android::hardware::biometrics::face::V1_0::Status;
+using android::hardware::biometrics::face::V1_1::IBiometricsFace;
+
+namespace {
+
+// Arbitrary, nonexistent userId
+constexpr uint32_t kUserId = 9;
+constexpr uint32_t kTimeoutSec = 3;
+constexpr auto kTimeout = std::chrono::seconds(kTimeoutSec);
+constexpr char kFacedataDir[] = "/data/vendor_de/0/facedata";
+constexpr char kCallbackNameOnError[] = "onError";
+
+// Callback arguments that need to be captured for the tests.
+struct FaceCallbackArgs {
+    // The error passed to the last onError() callback.
+    FaceError error;
+
+    // The userId passed to the last callback.
+    int32_t userId;
+};
+
+// Test callback class for the BiometricsFace HAL.
+// The HAL will call these callback methods to notify about completed operations
+// or encountered errors.
+class FaceCallback : public ::testing::VtsHalHidlTargetCallbackBase<FaceCallbackArgs>,
+                     public IBiometricsFaceClientCallback {
+  public:
+    Return<void> onEnrollResult(uint64_t, uint32_t, int32_t, uint32_t) override { return Void(); }
+
+    Return<void> onAuthenticated(uint64_t, uint32_t, int32_t, const hidl_vec<uint8_t>&) override {
+        return Void();
+    }
+
+    Return<void> onAcquired(uint64_t, int32_t, FaceAcquiredInfo, int32_t) override {
+        return Void();
+    }
+
+    Return<void> onError(uint64_t, int32_t userId, FaceError error, int32_t) override {
+        FaceCallbackArgs args = {};
+        args.error = error;
+        args.userId = userId;
+        NotifyFromCallback(kCallbackNameOnError, args);
+        return Void();
+    }
+
+    Return<void> onRemoved(uint64_t, const hidl_vec<uint32_t>&, int32_t) override { return Void(); }
+
+    Return<void> onEnumerate(uint64_t, const hidl_vec<uint32_t>&, int32_t) override {
+        return Void();
+    }
+
+    Return<void> onLockoutChanged(uint64_t) override { return Void(); }
+};
+
+// Test class for the BiometricsFace HAL.
+class FaceHidlTest : public ::testing::TestWithParam<std::string> {
+  public:
+    void SetUp() override {
+        mService = IBiometricsFace::getService(GetParam());
+        ASSERT_NE(mService, nullptr);
+        mCallback = new FaceCallback();
+        mCallback->SetWaitTimeoutDefault(kTimeout);
+        Return<void> ret1 = mService->setCallback(mCallback, [](const OptionalUint64& res) {
+            ASSERT_EQ(Status::OK, res.status);
+            // Makes sure the "deviceId" represented by "res.value" is not 0.
+            // 0 would mean the HIDL is not available.
+            ASSERT_NE(0UL, res.value);
+        });
+        ASSERT_TRUE(ret1.isOk());
+        Return<Status> ret2 = mService->setActiveUser(kUserId, kFacedataDir);
+        ASSERT_EQ(Status::OK, static_cast<Status>(ret2));
+    }
+
+    void TearDown() override {}
+
+    sp<IBiometricsFace> mService;
+    sp<FaceCallback> mCallback;
+};
+
+// enroll with an invalid (all zeroes) HAT should fail.
+TEST_P(FaceHidlTest, Enroll2_2ZeroHatTest) {
+    // Filling HAT with zeros
+    hidl_vec<uint8_t> token(69);
+    for (size_t i = 0; i < 69; i++) {
+        token[i] = 0;
+    }
+
+    hidl_handle windowId = nullptr;
+    Return<Status> ret = mService->enroll_1_1(token, kTimeoutSec, {}, windowId);
+    ASSERT_EQ(Status::OK, static_cast<Status>(ret));
+
+    // onError should be called with a meaningful (nonzero) error.
+    auto res = mCallback->WaitForCallback(kCallbackNameOnError);
+    EXPECT_TRUE(res.no_timeout);
+    EXPECT_EQ(kUserId, res.args->userId);
+    EXPECT_EQ(FaceError::UNABLE_TO_PROCESS, res.args->error);
+}
+
+// enroll with an invalid HAT should fail.
+TEST_P(FaceHidlTest, Enroll2_2GarbageHatTest) {
+    // Filling HAT with pseudorandom invalid data.
+    // Using default seed to make the test reproducible.
+    std::mt19937 gen(std::mt19937::default_seed);
+    std::uniform_int_distribution<uint8_t> dist;
+    hidl_vec<uint8_t> token(69);
+    for (size_t i = 0; i < 69; ++i) {
+        token[i] = dist(gen);
+    }
+
+    hidl_handle windowId = nullptr;
+    Return<Status> ret = mService->enroll_1_1(token, kTimeoutSec, {}, windowId);
+    ASSERT_EQ(Status::OK, static_cast<Status>(ret));
+
+    // onError should be called with a meaningful (nonzero) error.
+    auto res = mCallback->WaitForCallback(kCallbackNameOnError);
+    EXPECT_TRUE(res.no_timeout);
+    EXPECT_EQ(kUserId, res.args->userId);
+    EXPECT_EQ(FaceError::UNABLE_TO_PROCESS, res.args->error);
+}
+
+// enroll with an invalid (all zeroes) HAT should fail.
+TEST_P(FaceHidlTest, EnrollRemotelyZeroHatTest) {
+    // Filling HAT with zeros
+    hidl_vec<uint8_t> token(69);
+    for (size_t i = 0; i < 69; i++) {
+        token[i] = 0;
+    }
+
+    Return<Status> ret = mService->enrollRemotely(token, kTimeoutSec, {});
+    ASSERT_EQ(Status::OK, static_cast<Status>(ret));
+
+    // onError should be called with a meaningful (nonzero) error.
+    auto res = mCallback->WaitForCallback(kCallbackNameOnError);
+    EXPECT_TRUE(res.no_timeout);
+    EXPECT_EQ(kUserId, res.args->userId);
+    EXPECT_EQ(FaceError::UNABLE_TO_PROCESS, res.args->error);
+}
+
+// enroll with an invalid HAT should fail.
+TEST_P(FaceHidlTest, EnrollRemotelyGarbageHatTest) {
+    // Filling HAT with pseudorandom invalid data.
+    // Using default seed to make the test reproducible.
+    std::mt19937 gen(std::mt19937::default_seed);
+    std::uniform_int_distribution<uint8_t> dist;
+    hidl_vec<uint8_t> token(69);
+    for (size_t i = 0; i < 69; ++i) {
+        token[i] = dist(gen);
+    }
+
+    Return<Status> ret = mService->enrollRemotely(token, kTimeoutSec, {});
+    ASSERT_EQ(Status::OK, static_cast<Status>(ret));
+
+    // onError should be called with a meaningful (nonzero) error.
+    auto res = mCallback->WaitForCallback(kCallbackNameOnError);
+    EXPECT_TRUE(res.no_timeout);
+    EXPECT_EQ(kUserId, res.args->userId);
+    EXPECT_EQ(FaceError::UNABLE_TO_PROCESS, res.args->error);
+}
+
+}  // anonymous namespace
+
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, FaceHidlTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IBiometricsFace::descriptor)),
+        android::hardware::PrintInstanceNameToString);
diff --git a/biometrics/fingerprint/2.2/Android.bp b/biometrics/fingerprint/2.2/Android.bp
new file mode 100644
index 0000000..6c769ac
--- /dev/null
+++ b/biometrics/fingerprint/2.2/Android.bp
@@ -0,0 +1,19 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.biometrics.fingerprint@2.2",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "types.hal",
+        "IBiometricsFingerprint.hal",
+        "IBiometricsFingerprintClientCallback.hal",
+    ],
+    interfaces: [
+        "android.hardware.biometrics.fingerprint@2.1",
+        "android.hidl.base@1.0",
+    ],
+    gen_java: true,
+}
diff --git a/biometrics/fingerprint/2.2/IBiometricsFingerprint.hal b/biometrics/fingerprint/2.2/IBiometricsFingerprint.hal
new file mode 100644
index 0000000..0651034
--- /dev/null
+++ b/biometrics/fingerprint/2.2/IBiometricsFingerprint.hal
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.biometrics.fingerprint@2.2;
+
+import @2.1::IBiometricsFingerprint;
+import @2.1::RequestStatus;
+
+interface IBiometricsFingerprint extends @2.1::IBiometricsFingerprint {
+    /**
+     * Fingerprint enroll request:
+     * Switches the HAL state machine to collect and store a new fingerprint
+     * template. Switches back as soon as enroll is complete, signalled by
+     * (fingerprintMsg.type == FINGERPRINT_TEMPLATE_ENROLLING &&
+     *  fingerprintMsg.data.enroll.samplesRemaining == 0)
+     * or after timeoutSec seconds.
+     * The fingerprint template must be assigned to the group gid.
+     *
+     * @param hat a valid Hardware Authentication Token (HAT), generated
+     * as a result of a preEnroll() call.
+     * @param gid a framework defined fingerprint set (group) id.
+     * @param timeoutSec a timeout in seconds.
+     * @param windowId optional ID of an illumination window for optical under
+     * display fingerprint sensors. Must contain a null pointer if not used.
+     *
+     * @return debugErrno is a value the framework logs in case it is not 0.
+     *
+     * A notify() function may be called with a more detailed error structure.
+     */
+    enroll_2_2(vec<uint8_t> hat, uint32_t gid, uint32_t timeoutSec, handle windowId)
+        generates (RequestStatus debugErrno);
+
+    /**
+     * Authenticates an operation identified by operationId
+     *
+     * @param operationId operation id.
+     * @param gid fingerprint group id.
+     * @param windowId optional ID of an illumination window for optical under
+     * display fingerprint sensors. Must contain a null pointer if not used.
+     *
+     * @return debugErrno is a value the framework logs in case it is not 0.
+     */
+    authenticate_2_2(uint64_t operationId, uint32_t gid, handle windowId)
+        generates (RequestStatus debugErrno);
+};
diff --git a/biometrics/fingerprint/2.2/IBiometricsFingerprintClientCallback.hal b/biometrics/fingerprint/2.2/IBiometricsFingerprintClientCallback.hal
new file mode 100644
index 0000000..14c2b12
--- /dev/null
+++ b/biometrics/fingerprint/2.2/IBiometricsFingerprintClientCallback.hal
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.biometrics.fingerprint@2.2;
+
+import @2.1::IBiometricsFingerprintClientCallback;
+
+/*
+ * This HAL interface communicates asynchronous results from the
+ * fingerprint driver in response to user actions on the fingerprint sensor
+ */
+interface IBiometricsFingerprintClientCallback extends @2.1::IBiometricsFingerprintClientCallback {
+    /**
+     * Sent when a fingerprint image is acquired by the sensor
+     * @param deviceId the instance of this fingerprint device
+     * @param acquiredInfo a message about the quality of the acquired image
+     * @param vendorCode a vendor-specific message about the quality of the image. Only
+     *        valid when acquiredInfo == ACQUIRED_VENDOR
+     */
+    oneway onAcquired_2_2(uint64_t deviceId, FingerprintAcquiredInfo acquiredInfo,
+        int32_t vendorCode);
+};
diff --git a/biometrics/fingerprint/2.2/types.hal b/biometrics/fingerprint/2.2/types.hal
new file mode 100644
index 0000000..2c1d3f3
--- /dev/null
+++ b/biometrics/fingerprint/2.2/types.hal
@@ -0,0 +1,42 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.biometrics.fingerprint@2.2;
+
+import @2.1::FingerprintAcquiredInfo;
+
+/**
+ * Fingerprint acquisition info is meant as feedback for the current operation.
+ * Anything but START and ACQUIRED_GOOD must be shown to the user as feedback on
+ * how to take action on the current operation. For example,
+ * ACQUIRED_IMAGER_DIRTY may be used to tell the user to clean the sensor if it
+ * is detected to be dirty.
+ * If this causes the current operation to fail, an additional ERROR_CANCELED
+ * must be sent to stop the operation in progress (e.g. enrollment).
+ * In general, these messages will result in a "Try again" message.
+ */
+enum FingerprintAcquiredInfo : @2.1::FingerprintAcquiredInfo {
+    /**
+     * This message represents the earliest message sent at the beginning of the
+     * authentication pipeline. It is expected to be used to measure latency. For
+     * example, in a camera-based authentication system it's expected to be sent
+     * prior to camera initialization. Note this should be sent whenever
+     * authentication is restarted (see IBiometricsFace#userActivity).
+     * The framework will measure latency based on the time between the last START
+     * message and the onAuthenticated callback.
+     */
+    START = 7,
+};
diff --git a/biometrics/fingerprint/2.2/vts/functional/Android.bp b/biometrics/fingerprint/2.2/vts/functional/Android.bp
new file mode 100644
index 0000000..496570c
--- /dev/null
+++ b/biometrics/fingerprint/2.2/vts/functional/Android.bp
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+cc_test {
+    name: "VtsHalBiometricsFingerprintV2_2TargetTest",
+    defaults: ["VtsHalTargetTestDefaults"],
+    srcs: ["VtsHalBiometricsFingerprintV2_2TargetTest.cpp"],
+    static_libs: [
+        "android.hardware.biometrics.fingerprint@2.1",
+        "android.hardware.biometrics.fingerprint@2.2",
+    ],
+    test_suites: [
+        "general-tests",
+        "vts-core",
+    ],
+}
diff --git a/biometrics/fingerprint/2.2/vts/functional/VtsHalBiometricsFingerprintV2_2TargetTest.cpp b/biometrics/fingerprint/2.2/vts/functional/VtsHalBiometricsFingerprintV2_2TargetTest.cpp
new file mode 100644
index 0000000..50bd4ab
--- /dev/null
+++ b/biometrics/fingerprint/2.2/vts/functional/VtsHalBiometricsFingerprintV2_2TargetTest.cpp
@@ -0,0 +1,166 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "fingerprint_hidl_hal_test"
+
+#include <VtsHalHidlTargetCallbackBase.h>
+#include <android-base/properties.h>
+#include <android/hardware/biometrics/fingerprint/2.1/IBiometricsFingerprintClientCallback.h>
+#include <android/hardware/biometrics/fingerprint/2.2/IBiometricsFingerprint.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/HidlSupport.h>
+#include <hidl/ServiceManagement.h>
+
+#include <cinttypes>
+#include <random>
+
+using android::sp;
+using android::base::GetUintProperty;
+using android::hardware::hidl_handle;
+using android::hardware::hidl_vec;
+using android::hardware::Return;
+using android::hardware::Void;
+using android::hardware::biometrics::fingerprint::V2_1::FingerprintAcquiredInfo;
+using android::hardware::biometrics::fingerprint::V2_1::FingerprintError;
+using android::hardware::biometrics::fingerprint::V2_1::IBiometricsFingerprintClientCallback;
+using android::hardware::biometrics::fingerprint::V2_1::RequestStatus;
+using android::hardware::biometrics::fingerprint::V2_2::IBiometricsFingerprint;
+
+namespace {
+
+constexpr uint32_t kTimeoutSec = 3;
+constexpr auto kTimeout = std::chrono::seconds(kTimeoutSec);
+constexpr uint32_t kGroupId = 99;
+constexpr char kCallbackNameOnError[] = "onError";
+
+// Callback arguments that need to be captured for the tests.
+struct FingerprintCallbackArgs {
+    // The error passed to the last onError() callback.
+    FingerprintError error;
+
+    // The deviceId passed to the last callback.
+    uint64_t deviceId;
+};
+
+// Test callback class for the BiometricsFingerprint HAL.
+// The HAL will call these callback methods to notify about completed operations
+// or encountered errors.
+class FingerprintCallback : public ::testing::VtsHalHidlTargetCallbackBase<FingerprintCallbackArgs>,
+                            public IBiometricsFingerprintClientCallback {
+  public:
+    Return<void> onEnrollResult(uint64_t, uint32_t, uint32_t, uint32_t) override { return Void(); }
+
+    Return<void> onAcquired(uint64_t, FingerprintAcquiredInfo, int32_t) override { return Void(); }
+
+    Return<void> onAuthenticated(uint64_t, uint32_t, uint32_t, const hidl_vec<uint8_t>&) override {
+        return Void();
+    }
+
+    Return<void> onError(uint64_t deviceId, FingerprintError error, int32_t) override {
+        FingerprintCallbackArgs args = {};
+        args.error = error;
+        args.deviceId = deviceId;
+        NotifyFromCallback(kCallbackNameOnError, args);
+        return Void();
+    }
+
+    Return<void> onRemoved(uint64_t, uint32_t, uint32_t, uint32_t) override { return Void(); }
+
+    Return<void> onEnumerate(uint64_t, uint32_t, uint32_t, uint32_t) override { return Void(); }
+};
+
+class FingerprintHidlTest : public ::testing::TestWithParam<std::string> {
+  public:
+    void SetUp() override {
+        mService = IBiometricsFingerprint::getService(GetParam());
+        ASSERT_NE(mService, nullptr);
+        mCallback = new FingerprintCallback();
+        mCallback->SetWaitTimeoutDefault(kTimeout);
+        Return<uint64_t> ret1 = mService->setNotify(mCallback);
+        ASSERT_NE(0UL, static_cast<uint64_t>(ret1));
+
+        /*
+         * Devices shipped from now on will instead store
+         * fingerprint data under /data/vendor_de/<user-id>/fpdata.
+         * Support for /data/vendor_de and /data/vendor_ce has been added to vold.
+         */
+
+        auto api_level = GetUintProperty<uint64_t>("ro.product.first_api_level", 0);
+        if (api_level == 0) {
+            api_level = GetUintProperty<uint64_t>("ro.build.version.sdk", 0);
+        }
+        ASSERT_NE(api_level, 0);
+
+        // 27 is the API number for O-MR1
+        string tmpDir;
+        if (api_level <= 27) {
+            tmpDir = "/data/system/users/0/fpdata/";
+        } else {
+            tmpDir = "/data/vendor_de/0/fpdata/";
+        }
+
+        Return<RequestStatus> res = mService->setActiveGroup(kGroupId, tmpDir);
+        ASSERT_EQ(RequestStatus::SYS_OK, static_cast<RequestStatus>(res));
+    }
+
+    sp<IBiometricsFingerprint> mService;
+    sp<FingerprintCallback> mCallback;
+};
+
+// Enroll with an invalid (all zeroes) HAT should fail.
+TEST_P(FingerprintHidlTest, EnrollZeroHatTest) {
+    // Filling HAT with zeros
+    hidl_vec<uint8_t> token(69);
+    for (size_t i = 0; i < 69; i++) {
+        token[i] = 0;
+    }
+
+    hidl_handle windowId = nullptr;
+    Return<RequestStatus> ret = mService->enroll_2_2(token, kGroupId, kTimeoutSec, windowId);
+    ASSERT_EQ(RequestStatus::SYS_OK, static_cast<RequestStatus>(ret));
+
+    // At least one call to onError should occur
+    auto res = mCallback->WaitForCallback(kCallbackNameOnError);
+    ASSERT_NE(FingerprintError::ERROR_NO_ERROR, res.args->error);
+}
+
+// Enroll with an invalid (null) HAT should fail.
+TEST_P(FingerprintHidlTest, EnrollGarbageHatTest) {
+    // Filling HAT with pseudorandom invalid data.
+    // Using default seed to make the test reproducible.
+    std::mt19937 gen(std::mt19937::default_seed);
+    std::uniform_int_distribution<uint8_t> dist;
+    hidl_vec<uint8_t> token(69);
+    for (size_t i = 0; i < 69; ++i) {
+        token[i] = dist(gen);
+    }
+
+    hidl_handle windowId = nullptr;
+    Return<RequestStatus> ret = mService->enroll_2_2(token, kGroupId, kTimeoutSec, windowId);
+    ASSERT_EQ(RequestStatus::SYS_OK, static_cast<RequestStatus>(ret));
+
+    // At least one call to onError should occur
+    auto res = mCallback->WaitForCallback(kCallbackNameOnError);
+    ASSERT_NE(FingerprintError::ERROR_NO_ERROR, res.args->error);
+}
+
+}  // anonymous namespace
+
+INSTANTIATE_TEST_SUITE_P(PerInstance, FingerprintHidlTest,
+                         testing::ValuesIn(android::hardware::getAllHalInstanceNames(
+                                 IBiometricsFingerprint::descriptor)),
+                         android::hardware::PrintInstanceNameToString);
diff --git a/camera/common/1.0/default/Android.bp b/camera/common/1.0/default/Android.bp
index 3e5c6d7..f4390b2 100644
--- a/camera/common/1.0/default/Android.bp
+++ b/camera/common/1.0/default/Android.bp
@@ -21,6 +21,7 @@
         "libcamera_metadata",
         "android.hardware.graphics.mapper@2.0",
         "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
         "libexif",
     ],
     include_dirs: ["system/media/private/camera/include"],
diff --git a/camera/common/1.0/default/HandleImporter.cpp b/camera/common/1.0/default/HandleImporter.cpp
index b8c40e9..ac32c95 100644
--- a/camera/common/1.0/default/HandleImporter.cpp
+++ b/camera/common/1.0/default/HandleImporter.cpp
@@ -27,7 +27,9 @@
 
 using MapperErrorV2 = android::hardware::graphics::mapper::V2_0::Error;
 using MapperErrorV3 = android::hardware::graphics::mapper::V3_0::Error;
+using MapperErrorV4 = android::hardware::graphics::mapper::V4_0::Error;
 using IMapperV3 = android::hardware::graphics::mapper::V3_0::IMapper;
+using IMapperV4 = android::hardware::graphics::mapper::V4_0::IMapper;
 
 HandleImporter::HandleImporter() : mInitialized(false) {}
 
@@ -36,6 +38,12 @@
         return;
     }
 
+    mMapperV4 = IMapperV4::getService();
+    if (mMapperV4 != nullptr) {
+        mInitialized = true;
+        return;
+    }
+
     mMapperV3 = IMapperV3::getService();
     if (mMapperV3 != nullptr) {
         mInitialized = true;
@@ -53,6 +61,7 @@
 }
 
 void HandleImporter::cleanup() {
+    mMapperV4.clear();
     mMapperV3.clear();
     mMapperV2.clear();
     mInitialized = false;
@@ -151,6 +160,10 @@
         initializeLocked();
     }
 
+    if (mMapperV4 != nullptr) {
+        return importBufferInternal<IMapperV4, MapperErrorV4>(mMapperV4, handle);
+    }
+
     if (mMapperV3 != nullptr) {
         return importBufferInternal<IMapperV3, MapperErrorV3>(mMapperV3, handle);
     }
@@ -159,7 +172,7 @@
         return importBufferInternal<IMapper, MapperErrorV2>(mMapperV2, handle);
     }
 
-    ALOGE("%s: mMapperV3 and mMapperV2 are both null!", __FUNCTION__);
+    ALOGE("%s: mMapperV4, mMapperV3 and mMapperV2 are all null!", __FUNCTION__);
     return false;
 }
 
@@ -169,12 +182,17 @@
     }
 
     Mutex::Autolock lock(mLock);
-    if (mMapperV3 == nullptr && mMapperV2 == nullptr) {
-        ALOGE("%s: mMapperV3 and mMapperV2 are both null!", __FUNCTION__);
+    if (mMapperV4 == nullptr && mMapperV3 == nullptr && mMapperV2 == nullptr) {
+        ALOGE("%s: mMapperV4, mMapperV3 and mMapperV2 are all null!", __FUNCTION__);
         return;
     }
 
-    if (mMapperV3 != nullptr) {
+    if (mMapperV4 != nullptr) {
+        auto ret = mMapperV4->freeBuffer(const_cast<native_handle_t*>(handle));
+        if (!ret.isOk()) {
+            ALOGE("%s: mapper freeBuffer failed: %s", __FUNCTION__, ret.description().c_str());
+        }
+    } else if (mMapperV3 != nullptr) {
         auto ret = mMapperV3->freeBuffer(const_cast<native_handle_t*>(handle));
         if (!ret.isOk()) {
             ALOGE("%s: mapper freeBuffer failed: %s",
@@ -222,14 +240,26 @@
         initializeLocked();
     }
 
-    if (mMapperV3 == nullptr && mMapperV2 == nullptr) {
-        ALOGE("%s: mMapperV3 and mMapperV2 are both null!", __FUNCTION__);
+    if (mMapperV4 == nullptr && mMapperV3 == nullptr && mMapperV2 == nullptr) {
+        ALOGE("%s: mMapperV4, mMapperV3 and mMapperV2 are all null!", __FUNCTION__);
         return ret;
     }
 
     hidl_handle acquireFenceHandle;
     auto buffer = const_cast<native_handle_t*>(buf);
-    if (mMapperV3 != nullptr) {
+    if (mMapperV4 != nullptr) {
+        IMapperV4::Rect accessRegion{0, 0, static_cast<int>(size), 1};
+        // No need to use bytesPerPixel and bytesPerStride because we are using
+        // an 1-D buffer and accressRegion.
+        mMapperV4->lock(buffer, cpuUsage, accessRegion, acquireFenceHandle,
+                        [&](const auto& tmpError, const auto& tmpPtr) {
+                            if (tmpError == MapperErrorV4::NONE) {
+                                ret = tmpPtr;
+                            } else {
+                                ALOGE("%s: failed to lock error %d!", __FUNCTION__, tmpError);
+                            }
+                        });
+    } else if (mMapperV3 != nullptr) {
         IMapperV3::Rect accessRegion { 0, 0, static_cast<int>(size), 1 };
         // No need to use bytesPerPixel and bytesPerStride because we are using
         // an 1-D buffer and accressRegion.
@@ -269,6 +299,16 @@
         initializeLocked();
     }
 
+    if (mMapperV4 != nullptr) {
+        // No device currently supports IMapper 4.0 so it is safe to just return an error code here.
+        //
+        // This will be supported by a combination of lock and BufferMetadata getters. We are going
+        // to refactor all the IAllocator/IMapper versioning code into a shared library. We will
+        // then add the IMapper 4.0 lockYCbCr support then.
+        ALOGE("%s: MapperV4 doesn't support lockYCbCr directly!", __FUNCTION__);
+        return {};
+    }
+
     if (mMapperV3 != nullptr) {
         return lockYCbCrInternal<IMapperV3, MapperErrorV3>(
                 mMapperV3, buf, cpuUsage, accessRegion);
@@ -279,11 +319,14 @@
                 mMapperV2, buf, cpuUsage, accessRegion);
     }
 
-    ALOGE("%s: mMapperV3 and mMapperV2 are both null!", __FUNCTION__);
+    ALOGE("%s: mMapperV4, mMapperV3 and mMapperV2 are all null!", __FUNCTION__);
     return {};
 }
 
 int HandleImporter::unlock(buffer_handle_t& buf) {
+    if (mMapperV4 != nullptr) {
+        return unlockInternal<IMapperV4, MapperErrorV4>(mMapperV4, buf);
+    }
     if (mMapperV3 != nullptr) {
         return unlockInternal<IMapperV3, MapperErrorV3>(mMapperV3, buf);
     }
@@ -291,7 +334,7 @@
         return unlockInternal<IMapper, MapperErrorV2>(mMapperV2, buf);
     }
 
-    ALOGE("%s: mMapperV3 and mMapperV2 are both null!", __FUNCTION__);
+    ALOGE("%s: mMapperV4, mMapperV3 and mMapperV2 are all null!", __FUNCTION__);
     return -1;
 }
 
diff --git a/camera/common/1.0/default/include/HandleImporter.h b/camera/common/1.0/default/include/HandleImporter.h
index a93d455..fc2bbd1 100644
--- a/camera/common/1.0/default/include/HandleImporter.h
+++ b/camera/common/1.0/default/include/HandleImporter.h
@@ -17,10 +17,11 @@
 #ifndef CAMERA_COMMON_1_0_HANDLEIMPORTED_H
 #define CAMERA_COMMON_1_0_HANDLEIMPORTED_H
 
-#include <utils/Mutex.h>
 #include <android/hardware/graphics/mapper/2.0/IMapper.h>
 #include <android/hardware/graphics/mapper/3.0/IMapper.h>
+#include <android/hardware/graphics/mapper/4.0/IMapper.h>
 #include <cutils/native_handle.h>
+#include <utils/Mutex.h>
 
 using android::hardware::graphics::mapper::V2_0::IMapper;
 using android::hardware::graphics::mapper::V2_0::YCbCrLayout;
@@ -70,6 +71,7 @@
     bool mInitialized;
     sp<IMapper> mMapperV2;
     sp<graphics::mapper::V3_0::IMapper> mMapperV3;
+    sp<graphics::mapper::V4_0::IMapper> mMapperV4;
 };
 
 } // namespace helper
diff --git a/camera/device/1.0/default/Android.bp b/camera/device/1.0/default/Android.bp
index 97d0b5f..e6e6485 100644
--- a/camera/device/1.0/default/Android.bp
+++ b/camera/device/1.0/default/Android.bp
@@ -14,6 +14,7 @@
         "android.hardware.graphics.allocator@2.0",
         "android.hardware.graphics.mapper@2.0",
         "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
         "android.hardware.graphics.common@1.0",
         "android.hidl.allocator@1.0",
         "android.hidl.memory@1.0",
diff --git a/camera/device/3.2/default/Android.bp b/camera/device/3.2/default/Android.bp
index e4d9e85..878878d 100644
--- a/camera/device/3.2/default/Android.bp
+++ b/camera/device/3.2/default/Android.bp
@@ -13,6 +13,7 @@
         "android.hardware.camera.provider@2.4",
         "android.hardware.graphics.mapper@2.0",
         "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
         "liblog",
         "libhardware",
         "libcamera_metadata",
diff --git a/camera/device/3.3/default/Android.bp b/camera/device/3.3/default/Android.bp
index d964f3d..7d51434 100644
--- a/camera/device/3.3/default/Android.bp
+++ b/camera/device/3.3/default/Android.bp
@@ -15,6 +15,7 @@
         "android.hardware.camera.provider@2.4",
         "android.hardware.graphics.mapper@2.0",
         "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
         "liblog",
         "libhardware",
         "libcamera_metadata",
diff --git a/camera/device/3.4/default/Android.bp b/camera/device/3.4/default/Android.bp
index 71a9e77..59e8329 100644
--- a/camera/device/3.4/default/Android.bp
+++ b/camera/device/3.4/default/Android.bp
@@ -48,6 +48,7 @@
         "android.hardware.camera.provider@2.4",
         "android.hardware.graphics.mapper@2.0",
         "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
         "liblog",
         "libhardware",
         "libcamera_metadata",
@@ -84,6 +85,7 @@
         "android.hardware.camera.provider@2.4",
         "android.hardware.graphics.mapper@2.0",
         "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
         "liblog",
         "libhardware",
         "libcamera_metadata",
diff --git a/camera/device/3.4/default/include/ext_device_v3_4_impl/ExternalCameraDevice_3_4.h b/camera/device/3.4/default/include/ext_device_v3_4_impl/ExternalCameraDevice_3_4.h
index bd79807..1958fcb 100644
--- a/camera/device/3.4/default/include/ext_device_v3_4_impl/ExternalCameraDevice_3_4.h
+++ b/camera/device/3.4/default/include/ext_device_v3_4_impl/ExternalCameraDevice_3_4.h
@@ -105,7 +105,7 @@
     // Calls into virtual member function. Do not use it in constructor
     status_t initCameraCharacteristics();
     // Init available capabilities keys
-    status_t initAvailableCapabilities(
+    virtual status_t initAvailableCapabilities(
             ::android::hardware::camera::common::V1_0::helper::CameraMetadata*);
     // Init non-device dependent keys
     virtual status_t initDefaultCharsKeys(
diff --git a/camera/device/3.5/default/Android.bp b/camera/device/3.5/default/Android.bp
index 43362fd..1c307ee 100644
--- a/camera/device/3.5/default/Android.bp
+++ b/camera/device/3.5/default/Android.bp
@@ -49,6 +49,7 @@
         "android.hardware.camera.provider@2.4",
         "android.hardware.graphics.mapper@2.0",
         "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
         "liblog",
         "libhardware",
         "libcamera_metadata",
@@ -81,7 +82,8 @@
         "android.hardware.camera.device@3.5",
         "android.hardware.camera.provider@2.4",
         "android.hardware.graphics.mapper@2.0",
-	"android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
         "liblog",
         "libhardware",
         "libcamera_metadata",
diff --git a/camera/device/3.5/types.hal b/camera/device/3.5/types.hal
index 6d861e2..38493b4 100644
--- a/camera/device/3.5/types.hal
+++ b/camera/device/3.5/types.hal
@@ -23,7 +23,8 @@
 /**
  * If the result metadata cannot be produced for a physical camera device part of a logical
  * multi-camera, then HAL must invoke the notification callback and pass a message with ERROR_RESULT
- * code and errorStreamId that contains the stream id associated with that physical device.
+ * code and errorStreamId that contains the stream id associated with that physical device. Such
+ * callback must be made before the final processCaptureResult() call for the corresponding request.
  * The behavior during absent result metadata remains unchanged for a logical or a non-logical
  * camera device and the errorStreamId must be set to -1.
  */
diff --git a/camera/device/3.6/Android.bp b/camera/device/3.6/Android.bp
new file mode 100644
index 0000000..8766b93
--- /dev/null
+++ b/camera/device/3.6/Android.bp
@@ -0,0 +1,24 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.camera.device@3.6",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "types.hal",
+        "ICameraDeviceSession.hal",
+        "ICameraOfflineSession.hal",
+    ],
+    interfaces: [
+        "android.hardware.camera.common@1.0",
+        "android.hardware.camera.device@3.2",
+        "android.hardware.camera.device@3.3",
+        "android.hardware.camera.device@3.4",
+        "android.hardware.camera.device@3.5",
+        "android.hardware.graphics.common@1.0",
+        "android.hidl.base@1.0",
+    ],
+    gen_java: false,
+}
diff --git a/camera/device/3.6/ICameraDeviceSession.hal b/camera/device/3.6/ICameraDeviceSession.hal
new file mode 100644
index 0000000..00ebcc3
--- /dev/null
+++ b/camera/device/3.6/ICameraDeviceSession.hal
@@ -0,0 +1,132 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.camera.device@3.6;
+
+import android.hardware.camera.common@1.0::Status;
+import @3.5::ICameraDeviceSession;
+import @3.5::StreamConfiguration;
+import ICameraOfflineSession;
+
+/**
+ * Camera device active session interface.
+ *
+ * Obtained via ICameraDevice::open(), this interface contains the methods to
+ * configure and request captures from an active camera device.
+ */
+interface ICameraDeviceSession extends @3.5::ICameraDeviceSession {
+    /**
+     * configureStreams_3_6:
+     *
+     * Identical to @3.5::ICameraDeviceSession.configureStreams, except that:
+     *
+     * - a boolean supportOffline is added to HalStreamConfiguration to indicate
+     *   if this stream can be switched to offline mode later.
+     *
+     * @return status Status code for the operation, one of:
+     *     OK:
+     *         On successful stream configuration.
+     *     INTERNAL_ERROR:
+     *         If there has been a fatal error and the device is no longer
+     *         operational. Only close() can be called successfully by the
+     *         framework after this error is returned.
+     *     ILLEGAL_ARGUMENT:
+     *         If the requested stream configuration is invalid. Some examples
+     *         of invalid stream configurations include:
+     *           - Including more than 1 INPUT stream
+     *           - Not including any OUTPUT streams
+     *           - Including streams with unsupported formats, or an unsupported
+     *             size for that format.
+     *           - Including too many output streams of a certain format.
+     *           - Unsupported rotation configuration
+     *           - Stream sizes/formats don't satisfy the
+     *             StreamConfigurationMode requirements
+     *             for non-NORMAL mode, or the requested operation_mode is not
+     *             supported by the HAL.
+     *           - Unsupported usage flag
+     *         The camera service cannot filter out all possible illegal stream
+     *         configurations, since some devices may support more simultaneous
+     *         streams or larger stream resolutions than the minimum required
+     *         for a given camera device hardware level. The HAL must return an
+     *         ILLEGAL_ARGUMENT for any unsupported stream set, and then be
+     *         ready to accept a future valid stream configuration in a later
+     *         configureStreams call.
+     * @return halConfiguration The stream parameters desired by the HAL for
+     *     each stream, including maximum buffers, the usage flags, and the
+     *     override format.
+     */
+    configureStreams_3_6(@3.5::StreamConfiguration requestedConfiguration)
+        generates (Status status, HalStreamConfiguration halConfiguration);
+
+    /**
+     * switchToOffline:
+     *
+     * Switch the current running session from actively streaming mode to the
+     * offline mode. See ICameraOfflineSession for more details.
+     *
+     * The streamsToKeep argument contains list of streams IDs where application
+     * still needs its output. For all streams application does not need anymore,
+     * camera HAL can send ERROR_BUFFER to speed up the transition, or even send
+     * ERROR_REQUEST if all output targets of a request is not needed. By the
+     * time this call returns, camera HAL must have returned all buffers coming
+     * from streams no longer needed and have erased buffer caches of such streams.
+     *
+     * For all requests that are going to be transferred to offline session,
+     * the ICameraDeviceSession is responsible to capture all input buffers from
+     * the image sensor before the switchToOffline call returns. Before
+     * switchToOffline returns, camera HAL must have completed all requests not
+     * switching to offline mode, and collected information on what streams and
+     * requests are going to continue in the offline session, in the
+     * offlineSessionInfo output argument.
+     *
+     * If there are no requests qualified to be transferred to offline session,
+     * the camera HAL must return a null ICameraOfflineSession object with OK
+     * status. In this scenario, the camera HAL still must flush all inflight
+     * requests and unconfigure all streams before returning this call.
+     *
+     * After switchToOffline returns, the ICameraDeviceSession must be back to
+     * unconfigured state as if it is just created and no streams are configured.
+     * Also, camera HAL must not call any methods in ICameraDeviceCallback since
+     * all unfinished requests are now transferred to the offline session.
+     * After the call returns, camera service may then call close to close
+     * the camera device, or call configureStream* again to reconfigure the
+     * camera and then send new capture requests with processCaptureRequest. In
+     * the latter case, it is legitimate for camera HAL to call methods in
+     * ICameraDeviceCallback again in response to the newly submitted capture
+     * requests.
+     *
+     * @return status Status code for the operation, one of:
+     *     OK:
+     *         On switching to offline session and unconfiguring streams
+     *         successfully.
+     *     ILLEGAL_ARGUMENT:
+     *         If camera does not support offline mode in any one of streams
+     *         in streamsToKeep argument. Note that the camera HAL must report
+     *         if a stream supports offline mode in HalStreamConfiguration
+     *         output of configureStreams_3_6 method. If all streams in
+     *         streamsToKeep argument support offline mode, then the camera HAL
+     *         must not return this error.
+     *
+     *
+     * @return offlineSessionInfo Information on what streams and requests will
+     *     be transferred to offline session to continue processing.
+     *
+     * @return offlineSession The offline session object camera service will use
+     *     to interact with.
+     */
+    switchToOffline(vec<int32_t> streamsToKeep) generates (Status status,
+        CameraOfflineSessionInfo offlineSessionInfo, ICameraOfflineSession offlineSession);
+};
diff --git a/camera/device/3.6/ICameraOfflineSession.hal b/camera/device/3.6/ICameraOfflineSession.hal
new file mode 100644
index 0000000..03cea64
--- /dev/null
+++ b/camera/device/3.6/ICameraOfflineSession.hal
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.camera.device@3.6;
+
+import @3.5::ICameraDeviceCallback;
+
+/**
+ * Camera device offline session interface.
+ *
+ * Obtained via ICameraDeviceSession::switchToOffline(), this interface contains
+ * the methods and callback interfaces that define how camera service interacts
+ * with an offline session.
+ *
+ * An offline session contains some unfinished capture requests that were submitted
+ * to the parent ICameraDeviceSession before calling switchToOffline, and is
+ * responsible for delivering these capture results back to camera service regardless
+ * of whether the parent camera device is still opened or not. An offline session must
+ * not have access to the camera device's image sensor. During switchToOffline
+ * call, camera HAL must capture all necessary frames from the image sensor that
+ * is needed for completing the requests offline later.
+ */
+interface ICameraOfflineSession {
+    /**
+     * Set the callbacks for offline session to communicate with camera service.
+     *
+     * Offline session is responsible to store all callbacks the camera HAL
+     * generated after the return of ICameraDeviceSession::switchToOffline, and
+     * send them to camera service once this method is called.
+     *
+     * Camera service must not call this method more than once, so these
+     * callbacks can be assumed to be constant after the first setCallback call.
+     */
+    setCallback(ICameraDeviceCallback cb);
+
+    /**
+     * getCaptureResultMetadataQueue:
+     *
+     * Retrieves the queue used along with
+     * ICameraDeviceCallback#processCaptureResult.
+     *
+     * Clients to ICameraOfflineSession must:
+     * - Call getCaptureRequestMetadataQueue to retrieve the fast message queue;
+     * - In implementation of ICameraDeviceCallback, test whether
+     *   .fmqResultSize field is zero.
+     *     - If .fmqResultSize != 0, read result metadata from the fast message
+     *       queue;
+     *     - otherwise, read result metadata in CaptureResult.result.
+     *
+     * @return queue the queue that implementation writes result metadata to.
+     */
+    getCaptureResultMetadataQueue() generates (fmq_sync<uint8_t> queue);
+
+    /**
+     * Close the offline session and release all resources.
+     *
+     * Camera service may call this method before or after the offline session
+     * has finished all requests it needs to handle. If there are still unfinished
+     * requests when close is called, camera HAL must send ERROR_REQUEST for
+     * all unfinished requests and return all buffers via
+     * ICameraDeviceCallback#processCaptureResult or
+     * ICameraDeviceCallback#returnStreamBuffers.
+     * Also, all buffer caches maintained by the offline session must be erased
+     * before the close call returns.
+     */
+    close();
+};
diff --git a/camera/device/3.6/default/Android.bp b/camera/device/3.6/default/Android.bp
new file mode 100644
index 0000000..ce51185
--- /dev/null
+++ b/camera/device/3.6/default/Android.bp
@@ -0,0 +1,66 @@
+//
+// Copyright (C) 2020 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_library_headers {
+    name: "camera.device@3.6-external-impl_headers",
+    vendor: true,
+    export_include_dirs: ["include/ext_device_v3_6_impl"]
+}
+
+cc_library_shared {
+    name: "camera.device@3.6-external-impl",
+    defaults: ["hidl_defaults"],
+    proprietary: true,
+    vendor: true,
+    srcs: [
+        "ExternalCameraDevice.cpp",
+        "ExternalCameraDeviceSession.cpp",
+    ],
+    shared_libs: [
+        "libhidlbase",
+        "libutils",
+        "libcutils",
+        "camera.device@3.2-impl",
+        "camera.device@3.3-impl",
+        "camera.device@3.4-external-impl",
+        "camera.device@3.5-external-impl",
+        "android.hardware.camera.device@3.2",
+        "android.hardware.camera.device@3.3",
+        "android.hardware.camera.device@3.4",
+        "android.hardware.camera.device@3.5",
+        "android.hardware.camera.device@3.6",
+        "android.hardware.camera.provider@2.4",
+        "android.hardware.graphics.mapper@2.0",
+        "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
+        "liblog",
+        "libhardware",
+        "libcamera_metadata",
+        "libfmq",
+        "libsync",
+        "libyuv",
+        "libjpeg",
+        "libexif",
+        "libtinyxml2"
+    ],
+    static_libs: [
+        "android.hardware.camera.common@1.0-helper",
+    ],
+    local_include_dirs: ["include/ext_device_v3_6_impl"],
+    export_shared_lib_headers: [
+        "libfmq",
+    ],
+}
diff --git a/camera/device/3.6/default/ExternalCameraDevice.cpp b/camera/device/3.6/default/ExternalCameraDevice.cpp
new file mode 100644
index 0000000..244c7dd
--- /dev/null
+++ b/camera/device/3.6/default/ExternalCameraDevice.cpp
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "ExtCamDev@3.6"
+//#define LOG_NDEBUG 0
+#include <log/log.h>
+
+#include "ExternalCameraDevice_3_6.h"
+
+namespace android {
+namespace hardware {
+namespace camera {
+namespace device {
+namespace V3_6 {
+namespace implementation {
+
+ExternalCameraDevice::ExternalCameraDevice(
+        const std::string& cameraId, const ExternalCameraConfig& cfg) :
+        V3_5::implementation::ExternalCameraDevice(cameraId, cfg) {}
+
+ExternalCameraDevice::~ExternalCameraDevice() {}
+
+sp<V3_4::implementation::ExternalCameraDeviceSession> ExternalCameraDevice::createSession(
+        const sp<V3_2::ICameraDeviceCallback>& cb,
+        const ExternalCameraConfig& cfg,
+        const std::vector<SupportedV4L2Format>& sortedFormats,
+        const CroppingType& croppingType,
+        const common::V1_0::helper::CameraMetadata& chars,
+        const std::string& cameraId,
+        unique_fd v4l2Fd) {
+    return new ExternalCameraDeviceSession(
+            cb, cfg, sortedFormats, croppingType, chars, cameraId, std::move(v4l2Fd));
+}
+
+#define UPDATE(tag, data, size)                    \
+do {                                               \
+  if (metadata->update((tag), (data), (size))) {   \
+    ALOGE("Update " #tag " failed!");              \
+    return -EINVAL;                                \
+  }                                                \
+} while (0)
+
+status_t ExternalCameraDevice::initAvailableCapabilities(
+        ::android::hardware::camera::common::V1_0::helper::CameraMetadata* metadata) {
+    status_t res =
+            V3_4::implementation::ExternalCameraDevice::initAvailableCapabilities(metadata);
+
+    if (res != OK) {
+        return res;
+    }
+
+    camera_metadata_entry caps = metadata->find(ANDROID_REQUEST_AVAILABLE_CAPABILITIES);
+    std::vector<uint8_t> availableCapabilities;
+
+    for (size_t i = 0; i < caps.count; i++) {
+        uint8_t capability = caps.data.u8[i];
+        availableCapabilities.push_back(capability);
+    }
+
+    // Add OFFLINE_PROCESSING capability to device 3.6
+    availableCapabilities.push_back(ANDROID_REQUEST_AVAILABLE_CAPABILITIES_OFFLINE_PROCESSING);
+
+    UPDATE(ANDROID_REQUEST_AVAILABLE_CAPABILITIES,
+           availableCapabilities.data(),
+           availableCapabilities.size());
+
+    return OK;
+}
+
+#undef UPDATE
+
+}  // namespace implementation
+}  // namespace V3_6
+}  // namespace device
+}  // namespace camera
+}  // namespace hardware
+}  // namespace android
+
diff --git a/camera/device/3.6/default/ExternalCameraDeviceSession.cpp b/camera/device/3.6/default/ExternalCameraDeviceSession.cpp
new file mode 100644
index 0000000..e14ae99
--- /dev/null
+++ b/camera/device/3.6/default/ExternalCameraDeviceSession.cpp
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "ExtCamDevSsn@3.6"
+#include <android/log.h>
+
+#include <utils/Trace.h>
+#include "ExternalCameraDeviceSession.h"
+
+namespace android {
+namespace hardware {
+namespace camera {
+namespace device {
+namespace V3_6 {
+namespace implementation {
+
+ExternalCameraDeviceSession::ExternalCameraDeviceSession(
+        const sp<V3_2::ICameraDeviceCallback>& callback,
+        const ExternalCameraConfig& cfg,
+        const std::vector<SupportedV4L2Format>& sortedFormats,
+        const CroppingType& croppingType,
+        const common::V1_0::helper::CameraMetadata& chars,
+        const std::string& cameraId,
+        unique_fd v4l2Fd) :
+        V3_5::implementation::ExternalCameraDeviceSession(
+                callback, cfg, sortedFormats, croppingType, chars, cameraId, std::move(v4l2Fd)) {
+}
+
+ExternalCameraDeviceSession::~ExternalCameraDeviceSession() {}
+
+
+Return<void> ExternalCameraDeviceSession::configureStreams_3_6(
+        const StreamConfiguration& requestedConfiguration,
+        ICameraDeviceSession::configureStreams_3_6_cb _hidl_cb)  {
+    V3_2::StreamConfiguration config_v32;
+    V3_3::HalStreamConfiguration outStreams_v33;
+    V3_6::HalStreamConfiguration outStreams;
+    const V3_4::StreamConfiguration& requestedConfiguration_3_4 = requestedConfiguration.v3_4;
+    Mutex::Autolock _il(mInterfaceLock);
+
+    config_v32.operationMode = requestedConfiguration_3_4.operationMode;
+    config_v32.streams.resize(requestedConfiguration_3_4.streams.size());
+    uint32_t blobBufferSize = 0;
+    int numStallStream = 0;
+    for (size_t i = 0; i < config_v32.streams.size(); i++) {
+        config_v32.streams[i] = requestedConfiguration_3_4.streams[i].v3_2;
+        if (config_v32.streams[i].format == PixelFormat::BLOB) {
+            blobBufferSize = requestedConfiguration_3_4.streams[i].bufferSize;
+            numStallStream++;
+        }
+    }
+
+    // Fail early if there are multiple BLOB streams
+    if (numStallStream > kMaxStallStream) {
+        ALOGE("%s: too many stall streams (expect <= %d, got %d)", __FUNCTION__,
+                kMaxStallStream, numStallStream);
+        _hidl_cb(Status::ILLEGAL_ARGUMENT, outStreams);
+        return Void();
+    }
+
+    Status status = configureStreams(config_v32, &outStreams_v33, blobBufferSize);
+
+    outStreams.streams.resize(outStreams_v33.streams.size());
+    for (size_t i = 0; i < outStreams.streams.size(); i++) {
+        outStreams.streams[i].v3_4.v3_3 = outStreams_v33.streams[i];
+        // TODO: implement it later
+        outStreams.streams[i].supportOffline = false;
+    }
+    _hidl_cb(status, outStreams);
+    return Void();
+}
+
+Return<void> ExternalCameraDeviceSession::switchToOffline(
+        const hidl_vec<int32_t>& streamsToKeep,
+        ICameraDeviceSession::switchToOffline_cb _hidl_cb) {
+    // TODO: implement this
+    (void) streamsToKeep;
+    (void) _hidl_cb;
+    return Void();
+}
+
+} // namespace implementation
+}  // namespace V3_6
+}  // namespace device
+}  // namespace camera
+}  // namespace hardware
+}  // namespace android
diff --git a/camera/device/3.6/default/OWNERS b/camera/device/3.6/default/OWNERS
new file mode 100644
index 0000000..f48a95c
--- /dev/null
+++ b/camera/device/3.6/default/OWNERS
@@ -0,0 +1 @@
+include platform/frameworks/av:/camera/OWNERS
diff --git a/camera/device/3.6/default/include/ext_device_v3_6_impl/ExternalCameraDeviceSession.h b/camera/device/3.6/default/include/ext_device_v3_6_impl/ExternalCameraDeviceSession.h
new file mode 100644
index 0000000..0e57c4c
--- /dev/null
+++ b/camera/device/3.6/default/include/ext_device_v3_6_impl/ExternalCameraDeviceSession.h
@@ -0,0 +1,191 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_CAMERA_DEVICE_V3_6_EXTCAMERADEVICE3SESSION_H
+#define ANDROID_HARDWARE_CAMERA_DEVICE_V3_6_EXTCAMERADEVICE3SESSION_H
+
+#include <android/hardware/camera/device/3.5/ICameraDeviceCallback.h>
+#include <android/hardware/camera/device/3.6/ICameraDeviceSession.h>
+#include <../../3.5/default/include/ext_device_v3_5_impl/ExternalCameraDeviceSession.h>
+
+namespace android {
+namespace hardware {
+namespace camera {
+namespace device {
+namespace V3_6 {
+namespace implementation {
+
+using ::android::hardware::camera::device::V3_2::BufferCache;
+using ::android::hardware::camera::device::V3_2::CameraMetadata;
+using ::android::hardware::camera::device::V3_2::CaptureRequest;
+using ::android::hardware::camera::device::V3_2::CaptureResult;
+using ::android::hardware::camera::device::V3_5::ICameraDeviceCallback;
+using ::android::hardware::camera::device::V3_2::RequestTemplate;
+using ::android::hardware::camera::device::V3_2::Stream;
+using ::android::hardware::camera::device::V3_5::StreamConfiguration;
+using ::android::hardware::camera::device::V3_6::ICameraDeviceSession;
+using ::android::hardware::camera::common::V1_0::Status;
+using ::android::hardware::camera::external::common::ExternalCameraConfig;
+using ::android::hardware::graphics::common::V1_0::PixelFormat;
+using ::android::hardware::MQDescriptorSync;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+using ::android::Mutex;
+using ::android::base::unique_fd;
+
+using ::android::hardware::camera::device::V3_4::implementation::SupportedV4L2Format;
+using ::android::hardware::camera::device::V3_4::implementation::CroppingType;
+
+struct ExternalCameraDeviceSession : public V3_5::implementation::ExternalCameraDeviceSession {
+
+    ExternalCameraDeviceSession(const sp<V3_2::ICameraDeviceCallback>&,
+            const ExternalCameraConfig& cfg,
+            const std::vector<SupportedV4L2Format>& sortedFormats,
+            const CroppingType& croppingType,
+            const common::V1_0::helper::CameraMetadata& chars,
+            const std::string& cameraId,
+            unique_fd v4l2Fd);
+    virtual ~ExternalCameraDeviceSession();
+
+    // Retrieve the HIDL interface, split into its own class to avoid inheritance issues when
+    // dealing with minor version revs and simultaneous implementation and interface inheritance
+    virtual sp<V3_4::ICameraDeviceSession> getInterface() override {
+        return new TrampolineSessionInterface_3_6(this);
+    }
+
+    static Status isStreamCombinationSupported(const V3_2::StreamConfiguration& config,
+            const std::vector<SupportedV4L2Format>& supportedFormats,
+            const ExternalCameraConfig& devCfg) {
+        return V3_4::implementation::ExternalCameraDeviceSession::isStreamCombinationSupported(
+                config, supportedFormats, devCfg);
+    }
+
+protected:
+    // Methods from v3.5 and earlier will trampoline to inherited implementation
+    Return<void> configureStreams_3_6(
+            const StreamConfiguration& requestedConfiguration,
+            ICameraDeviceSession::configureStreams_3_6_cb _hidl_cb);
+
+    Return<void> switchToOffline(
+            const hidl_vec<int32_t>& streamsToKeep,
+            ICameraDeviceSession::switchToOffline_cb _hidl_cb);
+
+private:
+
+    struct TrampolineSessionInterface_3_6 : public ICameraDeviceSession {
+        TrampolineSessionInterface_3_6(sp<ExternalCameraDeviceSession> parent) :
+                mParent(parent) {}
+
+        virtual Return<void> constructDefaultRequestSettings(
+                RequestTemplate type,
+                V3_3::ICameraDeviceSession::constructDefaultRequestSettings_cb _hidl_cb) override {
+            return mParent->constructDefaultRequestSettings(type, _hidl_cb);
+        }
+
+        virtual Return<void> configureStreams(
+                const V3_2::StreamConfiguration& requestedConfiguration,
+                V3_3::ICameraDeviceSession::configureStreams_cb _hidl_cb) override {
+            return mParent->configureStreams(requestedConfiguration, _hidl_cb);
+        }
+
+        virtual Return<void> processCaptureRequest(const hidl_vec<V3_2::CaptureRequest>& requests,
+                const hidl_vec<V3_2::BufferCache>& cachesToRemove,
+                V3_3::ICameraDeviceSession::processCaptureRequest_cb _hidl_cb) override {
+            return mParent->processCaptureRequest(requests, cachesToRemove, _hidl_cb);
+        }
+
+        virtual Return<void> getCaptureRequestMetadataQueue(
+                V3_3::ICameraDeviceSession::getCaptureRequestMetadataQueue_cb _hidl_cb) override  {
+            return mParent->getCaptureRequestMetadataQueue(_hidl_cb);
+        }
+
+        virtual Return<void> getCaptureResultMetadataQueue(
+                V3_3::ICameraDeviceSession::getCaptureResultMetadataQueue_cb _hidl_cb) override  {
+            return mParent->getCaptureResultMetadataQueue(_hidl_cb);
+        }
+
+        virtual Return<Status> flush() override {
+            return mParent->flush();
+        }
+
+        virtual Return<void> close() override {
+            return mParent->close();
+        }
+
+        virtual Return<void> configureStreams_3_3(
+                const V3_2::StreamConfiguration& requestedConfiguration,
+                configureStreams_3_3_cb _hidl_cb) override {
+            return mParent->configureStreams_3_3(requestedConfiguration, _hidl_cb);
+        }
+
+        virtual Return<void> configureStreams_3_4(
+                const V3_4::StreamConfiguration& requestedConfiguration,
+                configureStreams_3_4_cb _hidl_cb) override {
+            return mParent->configureStreams_3_4(requestedConfiguration, _hidl_cb);
+        }
+
+        virtual Return<void> processCaptureRequest_3_4(const hidl_vec<V3_4::CaptureRequest>& requests,
+                const hidl_vec<V3_2::BufferCache>& cachesToRemove,
+                ICameraDeviceSession::processCaptureRequest_3_4_cb _hidl_cb) override {
+            return mParent->processCaptureRequest_3_4(requests, cachesToRemove, _hidl_cb);
+        }
+
+        virtual Return<void> configureStreams_3_5(
+                const StreamConfiguration& requestedConfiguration,
+                configureStreams_3_5_cb _hidl_cb) override {
+            return mParent->configureStreams_3_5(requestedConfiguration, _hidl_cb);
+        }
+
+        virtual Return<void> signalStreamFlush(
+                const hidl_vec<int32_t>& requests,
+                uint32_t streamConfigCounter) override {
+            return mParent->signalStreamFlush(requests, streamConfigCounter);
+        }
+
+        virtual Return<void> isReconfigurationRequired(const V3_2::CameraMetadata& oldSessionParams,
+                const V3_2::CameraMetadata& newSessionParams,
+                ICameraDeviceSession::isReconfigurationRequired_cb _hidl_cb) override {
+            return mParent->isReconfigurationRequired(oldSessionParams, newSessionParams, _hidl_cb);
+        }
+
+        virtual Return<void> configureStreams_3_6(
+                const StreamConfiguration& requestedConfiguration,
+                configureStreams_3_6_cb _hidl_cb) override {
+            return mParent->configureStreams_3_6(requestedConfiguration, _hidl_cb);
+        }
+
+        virtual Return<void> switchToOffline(
+                const hidl_vec<int32_t>& streamsToKeep,
+                switchToOffline_cb _hidl_cb) override {
+            return mParent->switchToOffline(streamsToKeep, _hidl_cb);
+        }
+
+    private:
+        sp<ExternalCameraDeviceSession> mParent;
+    };
+};
+
+}  // namespace implementation
+}  // namespace V3_6
+}  // namespace device
+}  // namespace camera
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_CAMERA_DEVICE_V3_6_EXTCAMERADEVICE3SESSION_H
diff --git a/camera/device/3.6/default/include/ext_device_v3_6_impl/ExternalCameraDevice_3_6.h b/camera/device/3.6/default/include/ext_device_v3_6_impl/ExternalCameraDevice_3_6.h
new file mode 100644
index 0000000..046c9d8
--- /dev/null
+++ b/camera/device/3.6/default/include/ext_device_v3_6_impl/ExternalCameraDevice_3_6.h
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_CAMERA_DEVICE_V3_6_EXTCAMERADEVICE_H
+#define ANDROID_HARDWARE_CAMERA_DEVICE_V3_6_EXTCAMERADEVICE_H
+
+#include "ExternalCameraDeviceSession.h"
+#include <../../../../3.5/default/include/ext_device_v3_5_impl/ExternalCameraDevice_3_5.h>
+
+namespace android {
+namespace hardware {
+namespace camera {
+namespace device {
+namespace V3_6 {
+namespace implementation {
+
+using namespace ::android::hardware::camera::device;
+using ::android::hardware::camera::device::V3_5::ICameraDevice;
+using ::android::hardware::camera::common::V1_0::CameraResourceCost;
+using ::android::hardware::camera::common::V1_0::TorchMode;
+using ::android::hardware::camera::common::V1_0::Status;
+using ::android::hardware::camera::external::common::ExternalCameraConfig;
+using ::android::hardware::camera::external::common::Size;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::hidl_string;
+using ::android::sp;
+
+/*
+ * The camera device HAL implementation is opened lazily (via the open call)
+ */
+struct ExternalCameraDevice : public V3_5::implementation::ExternalCameraDevice {
+
+    // Called by external camera provider HAL.
+    // Provider HAL must ensure the uniqueness of CameraDevice object per cameraId, or there could
+    // be multiple CameraDevice trying to access the same physical camera.  Also, provider will have
+    // to keep track of all CameraDevice objects in order to notify CameraDevice when the underlying
+    // camera is detached.
+    ExternalCameraDevice(const std::string& cameraId, const ExternalCameraConfig& cfg);
+    virtual ~ExternalCameraDevice();
+
+protected:
+    virtual sp<V3_4::implementation::ExternalCameraDeviceSession> createSession(
+            const sp<V3_2::ICameraDeviceCallback>&,
+            const ExternalCameraConfig& cfg,
+            const std::vector<SupportedV4L2Format>& sortedFormats,
+            const CroppingType& croppingType,
+            const common::V1_0::helper::CameraMetadata& chars,
+            const std::string& cameraId,
+            unique_fd v4l2Fd) override;
+
+    virtual status_t initAvailableCapabilities(
+            ::android::hardware::camera::common::V1_0::helper::CameraMetadata*) override;
+};
+
+}  // namespace implementation
+}  // namespace V3_6
+}  // namespace device
+}  // namespace camera
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_CAMERA_DEVICE_V3_6_EXTCAMERADEVICE_H
diff --git a/camera/device/3.6/types.hal b/camera/device/3.6/types.hal
new file mode 100644
index 0000000..743b139
--- /dev/null
+++ b/camera/device/3.6/types.hal
@@ -0,0 +1,143 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.camera.device@3.6;
+
+import @3.2::BufferCache;
+import @3.4::HalStream;
+
+/**
+ * OfflineRequest:
+ *
+ * Information about a capture request being switched to offline mode via the
+ * ICameraDeviceSession#switchToOffline method.
+ *
+ */
+struct OfflineRequest {
+    /**
+     * Must match a inflight CaptureRequest sent by camera service
+     */
+    uint32_t frameNumber;
+
+    /**
+     * Stream IDs for outputs that will be returned via ICameraDeviceCallback.
+     * The stream ID must be within one of offline stream listed in
+     * CameraOfflineSessionInfo.
+     * Camera service will validate these pending buffers are matching camera
+     * service's record to make sure no buffers are leaked during the
+     * switchToOffline call.
+     */
+    vec<int32_t> pendingStreams;
+};
+
+/**
+ * OfflineStream:
+ *
+ * Information about a stream being switched to offline mode via the
+ * ICameraDeviceSession#switchToOffline method.
+ *
+ */
+struct OfflineStream {
+    /**
+     * IDs of a stream to be transferred to offline session.
+     *
+     * For devices that do not support HAL buffer management, this must be
+     * one of stream ID listed in streamsToKeep argument of the
+     * switchToOffline call.
+     * For devices that support HAL buffer management, this could be any stream
+     * that was configured right before calling switchToOffline.
+     */
+    int32_t id;
+
+    /**
+     * Number of outstanding buffers that will be returned via offline session
+     */
+    uint32_t numOutstandingBuffers;
+
+    /**
+     * Buffer ID of buffers currently cached between camera service and this
+     * stream, which may or may not be owned by the camera HAL right now.
+     * See StreamBuffer#bufferId for more details.
+     */
+    vec<uint64_t> circulatingBufferIds;
+};
+
+/**
+ * CameraOfflineSessionInfo:
+ *
+ * Information about pending outputs that's being transferred to an offline
+ * session from an active session using the
+ * ICameraDeviceSession#switchToOffline method.
+ *
+ */
+struct CameraOfflineSessionInfo {
+    /**
+     * Information on what streams will be preserved in offline session.
+     * Streams not listed here will be removed by camera service after
+     * switchToOffline call returns.
+     */
+    vec<OfflineStream> offlineStreams;
+
+    /**
+     * Information for requests that will be handled by offline session
+     * Camera service will validate this matches what camera service has on
+     * record.
+     */
+    vec<OfflineRequest> offlineRequests;
+};
+
+/**
+ * HalStream:
+ *
+ * The camera HAL's response to each requested stream configuration.
+ *
+ * This version extends the @3.4 HalStream with the physicalCameraId
+ * field
+ */
+struct HalStream {
+    /**
+     * The definition of HalStream from the prior version.
+     */
+    @3.4::HalStream v3_4;
+
+    /**
+     * Whether this stream can be switch to offline mode.
+     *
+     * For devices that does not support the OFFLINE_PROCESSING capability, this
+     * fields will always be false.
+     *
+     * For devices support the OFFLINE_PROCESSING capability: any input stream
+     * and any output stream that can be output of the input stream must set
+     * this field to true. Also any stream of YUV420_888 format or JPEG format,
+     * with CPU_READ usage flag, must set this field to true. All other streams
+     * are up to camera HAL to advertise support or not, though it is not
+     * recommended to list support for streams with hardware composer or video
+     * encoder usage flags as these streams tend to be targeted continuously and
+     * can lead to long latency when trying to switch to offline.
+     *
+     */
+    bool supportOffline;
+};
+
+/**
+ * HalStreamConfiguration:
+ *
+ * Identical to @3.4::HalStreamConfiguration, except that it contains @3.6::HalStream entries.
+ *
+ */
+struct HalStreamConfiguration {
+    vec<HalStream> streams;
+};
diff --git a/camera/metadata/3.2/types.hal b/camera/metadata/3.2/types.hal
index cef0397..f5034cc 100644
--- a/camera/metadata/3.2/types.hal
+++ b/camera/metadata/3.2/types.hal
@@ -410,7 +410,7 @@
      *
      * <p>List of the maximum number of regions that can be used for metering in
      * auto-exposure (AE), auto-white balance (AWB), and auto-focus (AF);
-     * this corresponds to the the maximum number of elements in
+     * this corresponds to the maximum number of elements in
      * ANDROID_CONTROL_AE_REGIONS, ANDROID_CONTROL_AWB_REGIONS,
      * and ANDROID_CONTROL_AF_REGIONS.</p>
      *
diff --git a/camera/metadata/3.3/types.hal b/camera/metadata/3.3/types.hal
index ca0c9d6..0d89681 100644
--- a/camera/metadata/3.3/types.hal
+++ b/camera/metadata/3.3/types.hal
@@ -71,8 +71,10 @@
 
     /** android.lens.poseReference [static, enum, public]
      *
-     * <p>The origin for ANDROID_LENS_POSE_TRANSLATION.</p>
+     * <p>The origin for ANDROID_LENS_POSE_TRANSLATION, and the accuracy of
+     * ANDROID_LENS_POSE_TRANSLATION and ANDROID_LENS_POSE_ROTATION.</p>
      *
+     * @see ANDROID_LENS_POSE_ROTATION
      * @see ANDROID_LENS_POSE_TRANSLATION
      */
     ANDROID_LENS_POSE_REFERENCE = android.hardware.camera.metadata@3.2::CameraMetadataTag:ANDROID_LENS_END,
diff --git a/camera/metadata/3.5/Android.bp b/camera/metadata/3.5/Android.bp
new file mode 100644
index 0000000..224c369
--- /dev/null
+++ b/camera/metadata/3.5/Android.bp
@@ -0,0 +1,18 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.camera.metadata@3.5",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "types.hal",
+    ],
+    interfaces: [
+        "android.hardware.camera.metadata@3.2",
+        "android.hardware.camera.metadata@3.3",
+        "android.hardware.camera.metadata@3.4",
+    ],
+    gen_java: true,
+}
diff --git a/camera/metadata/3.5/types.hal b/camera/metadata/3.5/types.hal
new file mode 100644
index 0000000..4e2252c
--- /dev/null
+++ b/camera/metadata/3.5/types.hal
@@ -0,0 +1,133 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * Autogenerated from camera metadata definitions in
+ * /system/media/camera/docs/metadata_definitions.xml
+ * *** DO NOT EDIT BY HAND ***
+ */
+
+package android.hardware.camera.metadata@3.5;
+
+import android.hardware.camera.metadata@3.2;
+import android.hardware.camera.metadata@3.3;
+import android.hardware.camera.metadata@3.4;
+
+// No new metadata sections added in this revision
+
+/**
+ * Main enumeration for defining camera metadata tags added in this revision
+ *
+ * <p>Partial documentation is included for each tag; for complete documentation, reference
+ * '/system/media/camera/docs/docs.html' in the corresponding Android source tree.</p>
+ */
+enum CameraMetadataTag : @3.4::CameraMetadataTag {
+    /** android.control.availableBokehMaxSizes [static, int32[], ndk_public]
+     *
+     * <p>The list of bokeh modes for ANDROID_CONTROL_BOKEH_MODE that are supported by this camera
+     * device, and each bokeh mode's maximum streaming (non-stall) size with bokeh effect.</p>
+     *
+     * @see ANDROID_CONTROL_BOKEH_MODE
+     */
+    ANDROID_CONTROL_AVAILABLE_BOKEH_MAX_SIZES = android.hardware.camera.metadata@3.3::CameraMetadataTag:ANDROID_CONTROL_END_3_3,
+
+    /** android.control.availableBokehZoomRatioRanges [static, float[], ndk_public]
+     *
+     * <p>The ranges of supported zoom ratio for non-OFF ANDROID_CONTROL_BOKEH_MODE.</p>
+     *
+     * @see ANDROID_CONTROL_BOKEH_MODE
+     */
+    ANDROID_CONTROL_AVAILABLE_BOKEH_ZOOM_RATIO_RANGES,
+
+    /** android.control.bokehMode [dynamic, enum, public]
+     *
+     * <p>Whether bokeh mode is enabled for a particular capture request.</p>
+     */
+    ANDROID_CONTROL_BOKEH_MODE,
+
+    /** android.control.zoomRatioRange [static, float[], public]
+     *
+     * <p>Minimum and maximum zoom ratios supported by this camera device.</p>
+     */
+    ANDROID_CONTROL_ZOOM_RATIO_RANGE,
+
+    /** android.control.zoomRatio [dynamic, float, public]
+     *
+     * <p>The desired zoom ratio</p>
+     */
+    ANDROID_CONTROL_ZOOM_RATIO,
+
+    ANDROID_CONTROL_END_3_5,
+
+    /** android.scaler.availableRotateAndCropModes [static, byte[], public]
+     *
+     * <p>List of rotate-and-crop modes for ANDROID_SCALER_ROTATE_AND_CROP that are supported by this camera device.</p>
+     *
+     * @see ANDROID_SCALER_ROTATE_AND_CROP
+     */
+    ANDROID_SCALER_AVAILABLE_ROTATE_AND_CROP_MODES = android.hardware.camera.metadata@3.4::CameraMetadataTag:ANDROID_SCALER_END_3_4,
+
+    /** android.scaler.rotateAndCrop [dynamic, enum, public]
+     *
+     * <p>Whether a rotation-and-crop operation is applied to processed
+     * outputs from the camera.</p>
+     */
+    ANDROID_SCALER_ROTATE_AND_CROP,
+
+    ANDROID_SCALER_END_3_5,
+
+};
+
+/*
+ * Enumeration definitions for the various entries that need them
+ */
+
+/** android.control.bokehMode enumeration values
+ * @see ANDROID_CONTROL_BOKEH_MODE
+ */
+enum CameraMetadataEnumAndroidControlBokehMode : uint32_t {
+    ANDROID_CONTROL_BOKEH_MODE_OFF,
+    ANDROID_CONTROL_BOKEH_MODE_STILL_CAPTURE,
+    ANDROID_CONTROL_BOKEH_MODE_CONTINUOUS,
+};
+
+/** android.lens.poseReference enumeration values added since v3.3
+ * @see ANDROID_LENS_POSE_REFERENCE
+ */
+enum CameraMetadataEnumAndroidLensPoseReference :
+        @3.3::CameraMetadataEnumAndroidLensPoseReference {
+    ANDROID_LENS_POSE_REFERENCE_UNDEFINED,
+};
+
+/** android.request.availableCapabilities enumeration values added since v3.4
+ * @see ANDROID_REQUEST_AVAILABLE_CAPABILITIES
+ */
+enum CameraMetadataEnumAndroidRequestAvailableCapabilities :
+        @3.4::CameraMetadataEnumAndroidRequestAvailableCapabilities {
+    ANDROID_REQUEST_AVAILABLE_CAPABILITIES_SYSTEM_CAMERA,
+    ANDROID_REQUEST_AVAILABLE_CAPABILITIES_OFFLINE_PROCESSING,
+};
+
+/** android.scaler.rotateAndCrop enumeration values
+ * @see ANDROID_SCALER_ROTATE_AND_CROP
+ */
+enum CameraMetadataEnumAndroidScalerRotateAndCrop : uint32_t {
+    ANDROID_SCALER_ROTATE_AND_CROP_NONE,
+    ANDROID_SCALER_ROTATE_AND_CROP_90,
+    ANDROID_SCALER_ROTATE_AND_CROP_180,
+    ANDROID_SCALER_ROTATE_AND_CROP_270,
+    ANDROID_SCALER_ROTATE_AND_CROP_AUTO,
+};
diff --git a/camera/provider/2.4/ICameraProvider.hal b/camera/provider/2.4/ICameraProvider.hal
index 74c3ff1..105629d 100644
--- a/camera/provider/2.4/ICameraProvider.hal
+++ b/camera/provider/2.4/ICameraProvider.hal
@@ -115,7 +115,7 @@
      *     INTERNAL_ERROR:
      *         A camera ID list cannot be created. This may be due to
      *         a failure to initialize the camera subsystem, for example.
-     * @return cameraDeviceServiceNames The vector of internal camera device
+     * @return cameraDeviceNames The vector of internal camera device
      *     names known to this provider.
      */
     getCameraIdList()
diff --git a/camera/provider/2.4/ICameraProviderCallback.hal b/camera/provider/2.4/ICameraProviderCallback.hal
index 63dd3c5..8822305 100644
--- a/camera/provider/2.4/ICameraProviderCallback.hal
+++ b/camera/provider/2.4/ICameraProviderCallback.hal
@@ -39,7 +39,7 @@
      * are already present, as soon as the callbacks are available through
      * setCallback.
      *
-     * @param cameraDeviceServiceName The name of the camera device that has a
+     * @param cameraDeviceName The name of the camera device that has a
      *     new status.
      * @param newStatus The new status that device is in.
      *
@@ -57,7 +57,7 @@
      * android.flash.info.available is reported as true via the
      * ICameraDevice::getCameraCharacteristics call.
      *
-     * @param cameraDeviceServiceName The name of the camera device that has a
+     * @param cameraDeviceName The name of the camera device that has a
      *     new status.
      * @param newStatus The new status that device is in.
      *
diff --git a/camera/provider/2.4/default/Android.bp b/camera/provider/2.4/default/Android.bp
index 95e27fd..627ddf4 100644
--- a/camera/provider/2.4/default/Android.bp
+++ b/camera/provider/2.4/default/Android.bp
@@ -13,6 +13,7 @@
         "android.hardware.camera.provider@2.4",
         "android.hardware.graphics.mapper@2.0",
         "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
         "android.hidl.allocator@1.0",
         "android.hidl.memory@1.0",
         "camera.device@1.0-impl",
@@ -48,9 +49,11 @@
         "android.hardware.camera.device@3.3",
         "android.hardware.camera.device@3.4",
         "android.hardware.camera.device@3.5",
+        "android.hardware.camera.device@3.6",
         "android.hardware.camera.provider@2.4",
         "android.hardware.graphics.mapper@2.0",
         "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
         "android.hidl.allocator@1.0",
         "android.hidl.memory@1.0",
         "camera.device@3.3-impl",
@@ -58,6 +61,7 @@
         "camera.device@3.4-impl",
         "camera.device@3.5-external-impl",
         "camera.device@3.5-impl",
+        "camera.device@3.6-external-impl",
         "libcamera_metadata",
         "libcutils",
         "libhardware",
@@ -71,7 +75,8 @@
     ],
     header_libs: [
         "camera.device@3.4-external-impl_headers",
-        "camera.device@3.5-external-impl_headers"
+        "camera.device@3.5-external-impl_headers",
+        "camera.device@3.6-external-impl_headers"
     ],
     export_include_dirs: ["."],
 }
@@ -93,6 +98,8 @@
         "android.hardware.camera.provider@2.4-external",
         "android.hardware.camera.provider@2.4-legacy",
         "android.hardware.graphics.mapper@2.0",
+        "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
         "android.hidl.allocator@1.0",
         "android.hidl.memory@1.0",
         "camera.device@1.0-impl",
@@ -137,6 +144,8 @@
         "android.hardware.camera.device@3.5",
         "android.hardware.camera.provider@2.4",
         "android.hardware.graphics.mapper@2.0",
+        "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
         "android.hidl.allocator@1.0",
         "android.hidl.memory@1.0",
         "libbinder",
diff --git a/camera/provider/2.4/default/ExternalCameraProviderImpl_2_4.cpp b/camera/provider/2.4/default/ExternalCameraProviderImpl_2_4.cpp
index a6fd288..2bfced2 100644
--- a/camera/provider/2.4/default/ExternalCameraProviderImpl_2_4.cpp
+++ b/camera/provider/2.4/default/ExternalCameraProviderImpl_2_4.cpp
@@ -26,6 +26,7 @@
 #include "ExternalCameraProviderImpl_2_4.h"
 #include "ExternalCameraDevice_3_4.h"
 #include "ExternalCameraDevice_3_5.h"
+#include "ExternalCameraDevice_3_6.h"
 
 namespace android {
 namespace hardware {
@@ -73,6 +74,7 @@
     switch(mPreferredHal3MinorVersion) {
         case 4:
         case 5:
+        case 6:
             // OK
             break;
         default:
@@ -171,6 +173,12 @@
                     cameraId, mCfg);
             break;
         }
+        case 6: {
+            ALOGV("Constructing v3.6 external camera device");
+            deviceImpl = new device::V3_6::implementation::ExternalCameraDevice(
+                    cameraId, mCfg);
+            break;
+        }
         default:
             ALOGE("%s: Unknown HAL minor version %d!", __FUNCTION__, mPreferredHal3MinorVersion);
             _hidl_cb(Status::INTERNAL_ERROR, nullptr);
@@ -202,7 +210,9 @@
     ALOGI("ExtCam: adding %s to External Camera HAL!", devName);
     Mutex::Autolock _l(mLock);
     std::string deviceName;
-    if (mPreferredHal3MinorVersion == 5) {
+    if (mPreferredHal3MinorVersion == 6) {
+        deviceName = std::string("device@3.6/external/") + devName;
+    } else if (mPreferredHal3MinorVersion == 5) {
         deviceName = std::string("device@3.5/external/") + devName;
     } else {
         deviceName = std::string("device@3.4/external/") + devName;
@@ -249,7 +259,9 @@
 void ExternalCameraProviderImpl_2_4::deviceRemoved(const char* devName) {
     Mutex::Autolock _l(mLock);
     std::string deviceName;
-    if (mPreferredHal3MinorVersion == 5) {
+    if (mPreferredHal3MinorVersion == 6) {
+        deviceName = std::string("device@3.6/external/") + devName;
+    } else if (mPreferredHal3MinorVersion == 5) {
         deviceName = std::string("device@3.5/external/") + devName;
     } else {
         deviceName = std::string("device@3.4/external/") + devName;
diff --git a/camera/provider/2.4/vts/functional/Android.bp b/camera/provider/2.4/vts/functional/Android.bp
index 2c3ed37..15f5c9a 100644
--- a/camera/provider/2.4/vts/functional/Android.bp
+++ b/camera/provider/2.4/vts/functional/Android.bp
@@ -41,14 +41,12 @@
 	"android.hardware.camera.metadata@3.4",
         "android.hardware.camera.provider@2.4",
         "android.hardware.camera.provider@2.5",
-        "android.hardware.graphics.allocator@2.0",
-        "android.hardware.graphics.allocator@3.0",
+        "android.hardware.camera.provider@2.6",
         "android.hardware.graphics.common@1.0",
-        "android.hardware.graphics.mapper@2.0",
-        "android.hardware.graphics.mapper@3.0",
         "android.hidl.allocator@1.0",
         "libgrallocusage",
         "libhidlmemory",
+        "libgralloctypes",
     ],
-    test_suites: ["general-tests"],
+    test_suites: ["general-tests", "vts-core"],
 }
diff --git a/camera/provider/2.4/vts/functional/VtsHalCameraProviderV2_4TargetTest.cpp b/camera/provider/2.4/vts/functional/VtsHalCameraProviderV2_4TargetTest.cpp
index a5369e7..b4092ca 100644
--- a/camera/provider/2.4/vts/functional/VtsHalCameraProviderV2_4TargetTest.cpp
+++ b/camera/provider/2.4/vts/functional/VtsHalCameraProviderV2_4TargetTest.cpp
@@ -20,51 +20,52 @@
 #include <chrono>
 #include <mutex>
 #include <regex>
+#include <string>
 #include <unordered_map>
 #include <unordered_set>
 #include <condition_variable>
 
 #include <inttypes.h>
 
-#include <android/hardware/camera/device/1.0/ICameraDevice.h>
-#include <android/hardware/camera/device/3.2/ICameraDevice.h>
-#include <android/hardware/camera/device/3.5/ICameraDevice.h>
-#include <android/hardware/camera/device/3.3/ICameraDeviceSession.h>
-#include <android/hardware/camera/device/3.4/ICameraDeviceSession.h>
-#include <android/hardware/camera/device/3.5/ICameraDeviceSession.h>
-#include <android/hardware/camera/device/3.4/ICameraDeviceCallback.h>
-#include <android/hardware/camera/device/3.5/ICameraDeviceCallback.h>
-#include <android/hardware/camera/provider/2.4/ICameraProvider.h>
-#include <android/hardware/camera/provider/2.5/ICameraProvider.h>
-#include <android/hardware/camera/metadata/3.4/types.h>
-#include <android/hidl/manager/1.0/IServiceManager.h>
-#include <binder/MemoryHeapBase.h>
 #include <CameraMetadata.h>
 #include <CameraParameters.h>
+#include <android/hardware/camera/device/1.0/ICameraDevice.h>
+#include <android/hardware/camera/device/3.2/ICameraDevice.h>
+#include <android/hardware/camera/device/3.3/ICameraDeviceSession.h>
+#include <android/hardware/camera/device/3.4/ICameraDeviceCallback.h>
+#include <android/hardware/camera/device/3.4/ICameraDeviceSession.h>
+#include <android/hardware/camera/device/3.5/ICameraDevice.h>
+#include <android/hardware/camera/device/3.5/ICameraDeviceCallback.h>
+#include <android/hardware/camera/device/3.5/ICameraDeviceSession.h>
+#include <android/hardware/camera/metadata/3.4/types.h>
+#include <android/hardware/camera/provider/2.4/ICameraProvider.h>
+#include <android/hardware/camera/provider/2.5/ICameraProvider.h>
+#include <android/hardware/camera/provider/2.6/ICameraProvider.h>
+#include <android/hardware/camera/provider/2.6/ICameraProviderCallback.h>
+#include <android/hidl/manager/1.0/IServiceManager.h>
+#include <binder/MemoryHeapBase.h>
 #include <cutils/properties.h>
 #include <fmq/MessageQueue.h>
 #include <grallocusage/GrallocUsageConversion.h>
+#include <gtest/gtest.h>
 #include <gui/BufferItemConsumer.h>
 #include <gui/BufferQueue.h>
 #include <gui/Surface.h>
 #include <hardware/gralloc.h>
 #include <hardware/gralloc1.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
+#include <log/log.h>
 #include <system/camera.h>
 #include <system/camera_metadata.h>
 #include <ui/GraphicBuffer.h>
+#include <ui/GraphicBufferAllocator.h>
+#include <ui/GraphicBufferMapper.h>
 
-#include <android/hardware/graphics/allocator/2.0/IAllocator.h>
-#include <android/hardware/graphics/allocator/3.0/IAllocator.h>
-#include <android/hardware/graphics/mapper/2.0/IMapper.h>
-#include <android/hardware/graphics/mapper/2.0/types.h>
-#include <android/hardware/graphics/mapper/3.0/IMapper.h>
 #include <android/hidl/allocator/1.0/IAllocator.h>
 #include <android/hidl/memory/1.0/IMapper.h>
 #include <android/hidl/memory/1.0/IMemory.h>
 
-#include <VtsHalHidlTargetTestBase.h>
-#include <VtsHalHidlTargetTestEnvBase.h>
-
 using namespace ::android::hardware::camera::device;
 using ::android::hardware::Return;
 using ::android::hardware::Void;
@@ -286,27 +287,6 @@
     }
 }
 
-// Test environment for camera
-class CameraHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
-   public:
-    // get the test environment singleton
-    static CameraHidlEnvironment* Instance() {
-        static CameraHidlEnvironment* instance = new CameraHidlEnvironment;
-        return instance;
-    }
-
-    virtual void HidlSetUp() override { ALOGI("SetUp CameraHidlEnvironment"); }
-
-    virtual void HidlTearDown() override { ALOGI("TearDown CameraHidlEnvironment"); }
-
-    virtual void registerTestServices() override { registerTestService<ICameraProvider>(); }
-
-   private:
-    CameraHidlEnvironment() {}
-
-    GTEST_DISALLOW_COPY_AND_ASSIGN_(CameraHidlEnvironment);
-};
-
 struct BufferItemHander: public BufferItemConsumer::FrameAvailableListener {
     BufferItemHander(wp<BufferItemConsumer> consumer) : mConsumer(consumer) {}
 
@@ -547,18 +527,19 @@
 }
 
 // The main test class for camera HIDL HAL.
-class CameraHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+class CameraHidlTest : public ::testing::TestWithParam<std::string> {
 public:
  virtual void SetUp() override {
-     string service_name = CameraHidlEnvironment::Instance()->getServiceName<ICameraProvider>();
+     std::string service_name = GetParam();
      ALOGI("get service with name: %s", service_name.c_str());
-     mProvider = ::testing::VtsHalHidlTargetTestBase::getService<ICameraProvider>(service_name);
+     mProvider = ICameraProvider::getService(service_name);
+
      ASSERT_NE(mProvider, nullptr);
 
      uint32_t id;
      ASSERT_TRUE(parseProviderName(service_name, &mProviderType, &id));
 
-     castProvider(mProvider, &mProvider2_5);
+     castProvider(mProvider, &mProvider2_5, &mProvider2_6);
      notifyDeviceState(provider::V2_5::DeviceState::NORMAL);
  }
  virtual void TearDown() override {}
@@ -622,7 +603,7 @@
 
         Return<void> returnStreamBuffers(const hidl_vec<StreamBuffer>& buffers) override;
 
-        void setCurrentStreamConfig(const hidl_vec<V3_2::Stream>& streams,
+        void setCurrentStreamConfig(const hidl_vec<V3_4::Stream>& streams,
                 const hidl_vec<V3_2::HalStream>& halStreams);
 
         void waitForBuffersReturned();
@@ -639,7 +620,7 @@
         /* members for requestStreamBuffers() and returnStreamBuffers()*/
         std::mutex mLock; // protecting members below
         bool                      mUseHalBufManager = false;
-        hidl_vec<V3_2::Stream>    mStreams;
+        hidl_vec<V3_4::Stream>    mStreams;
         hidl_vec<V3_2::HalStream> mHalStreams;
         uint64_t mNextBufferId = 1;
         using OutstandingBuffers = std::unordered_map<uint64_t, hidl_handle>;
@@ -730,8 +711,9 @@
             sp<ICameraDeviceSession> *session /*out*/,
             camera_metadata_t **staticMeta /*out*/,
             ::android::sp<ICameraDevice> *device = nullptr/*out*/);
-    void castProvider(const sp<provider::V2_4::ICameraProvider> &provider,
-            sp<provider::V2_5::ICameraProvider> *provider2_5 /*out*/);
+    void castProvider(const sp<provider::V2_4::ICameraProvider>& provider,
+                      sp<provider::V2_5::ICameraProvider>* provider2_5 /*out*/,
+                      sp<provider::V2_6::ICameraProvider>* provider2_6 /*out*/);
     void castSession(const sp<ICameraDeviceSession> &session, int32_t deviceVersion,
             sp<device::V3_3::ICameraDeviceSession> *session3_3 /*out*/,
             sp<device::V3_4::ICameraDeviceSession> *session3_4 /*out*/,
@@ -776,6 +758,8 @@
             const CameraMetadata& chars, int deviceVersion,
             const hidl_vec<hidl_string>& deviceNames);
     void verifyCameraCharacteristics(Status status, const CameraMetadata& chars);
+    void verifyBokehCharacteristics(const camera_metadata_t* metadata);
+    void verifyZoomCharacteristics(const camera_metadata_t* metadata);
     void verifyRecommendedConfigs(const CameraMetadata& metadata);
     void verifyMonochromeCharacteristics(const CameraMetadata& chars, int deviceVersion);
     void verifyMonochromeCameraResult(
@@ -797,9 +781,11 @@
     void verifySessionReconfigurationQuery(sp<device::V3_5::ICameraDeviceSession> session3_5,
             camera_metadata* oldSessionParams, camera_metadata* newSessionParams);
 
+    void verifyRequestTemplate(const camera_metadata_t* metadata, RequestTemplate requestTemplate);
+
     bool isDepthOnly(camera_metadata_t* staticMeta);
 
-    static Status getAvailableOutputStreams(camera_metadata_t *staticMeta,
+    static Status getAvailableOutputStreams(const camera_metadata_t *staticMeta,
             std::vector<AvailableStream> &outputStreams,
             const AvailableStream *threshold = nullptr);
     static Status getJpegBufferSize(camera_metadata_t *staticMeta,
@@ -865,6 +851,8 @@
         int32_t partialResultCount;
 
         // For buffer drop errors, the stream ID for the stream that lost a buffer.
+        // For physical sub-camera result errors, the Id of the physical stream
+        // for the physical sub-camera.
         // Otherwise -1.
         int32_t errorStreamId;
 
@@ -878,6 +866,8 @@
         // return from HAL but framework.
         ::android::Vector<StreamBuffer> resultOutputBuffers;
 
+        std::unordered_set<std::string> expectedPhysicalResults;
+
         InFlightRequest() :
                 shutterTimestamp(0),
                 errorCodeValid(false),
@@ -907,6 +897,24 @@
                 partialResultCount(0),
                 errorStreamId(-1),
                 hasInputBuffer(hasInput) {}
+
+        InFlightRequest(ssize_t numBuffers, bool hasInput,
+                bool partialResults, uint32_t partialCount,
+                const std::unordered_set<std::string>& extraPhysicalResult,
+                std::shared_ptr<ResultMetadataQueue> queue = nullptr) :
+                shutterTimestamp(0),
+                errorCodeValid(false),
+                errorCode(ErrorCode::ERROR_BUFFER),
+                usePartialResult(partialResults),
+                numPartialResults(partialCount),
+                resultQueue(queue),
+                haveResultMetadata(false),
+                numBuffersLeft(numBuffers),
+                frameNumber(0),
+                partialResultCount(0),
+                errorStreamId(-1),
+                hasInputBuffer(hasInput),
+                expectedPhysicalResults(extraPhysicalResult) {}
     };
 
     // Map from frame number to the in-flight request state
@@ -932,6 +940,7 @@
     // Camera provider service
     sp<ICameraProvider> mProvider;
     sp<::android::hardware::camera::provider::V2_5::ICameraProvider> mProvider2_5;
+    sp<::android::hardware::camera::provider::V2_6::ICameraProvider> mProvider2_6;
 
     // Camera provider type.
     std::string mProviderType;
@@ -1124,6 +1133,13 @@
             return notify;
         }
 
+        if (physicalCameraMetadata.size() != request->expectedPhysicalResults.size()) {
+            ALOGE("%s: Frame %d: Returned physical metadata count %zu "
+                    "must be equal to expected count %zu", __func__, frameNumber,
+                    physicalCameraMetadata.size(), request->expectedPhysicalResults.size());
+            ADD_FAILURE();
+            return notify;
+        }
         std::vector<::android::hardware::camera::device::V3_2::CameraMetadata> physResultMetadata;
         physResultMetadata.resize(physicalCameraMetadata.size());
         for (size_t i = 0; i < physicalCameraMetadata.size(); i++) {
@@ -1251,11 +1267,11 @@
 }
 
 void CameraHidlTest::DeviceCb::setCurrentStreamConfig(
-        const hidl_vec<V3_2::Stream>& streams, const hidl_vec<V3_2::HalStream>& halStreams) {
+        const hidl_vec<V3_4::Stream>& streams, const hidl_vec<V3_2::HalStream>& halStreams) {
     ASSERT_EQ(streams.size(), halStreams.size());
     ASSERT_NE(streams.size(), 0);
     for (size_t i = 0; i < streams.size(); i++) {
-        ASSERT_EQ(streams[i].id, halStreams[i].id);
+        ASSERT_EQ(streams[i].v3_2.id, halStreams[i].id);
     }
     std::lock_guard<std::mutex> l(mLock);
     mUseHalBufManager = true;
@@ -1293,16 +1309,6 @@
     std::lock_guard<std::mutex> l(mParent->mLock);
 
     for (size_t i = 0; i < messages.size(); i++) {
-        ssize_t idx = mParent->mInflightMap.indexOfKey(
-                messages[i].msg.shutter.frameNumber);
-        if (::android::NAME_NOT_FOUND == idx) {
-            ALOGE("%s: Unexpected frame number! received: %u",
-                  __func__, messages[i].msg.shutter.frameNumber);
-            ADD_FAILURE();
-            break;
-        }
-        InFlightRequest *r = mParent->mInflightMap.editValueAt(idx);
-
         switch(messages[i].type) {
             case MsgType::ERROR:
                 if (ErrorCode::ERROR_DEVICE == messages[i].msg.error.errorCode) {
@@ -1310,13 +1316,59 @@
                           __func__);
                     ADD_FAILURE();
                 } else {
-                    r->errorCodeValid = true;
-                    r->errorCode = messages[i].msg.error.errorCode;
-                    r->errorStreamId = messages[i].msg.error.errorStreamId;
+                    ssize_t idx = mParent->mInflightMap.indexOfKey(
+                            messages[i].msg.error.frameNumber);
+                    if (::android::NAME_NOT_FOUND == idx) {
+                        ALOGE("%s: Unexpected error frame number! received: %u",
+                              __func__, messages[i].msg.error.frameNumber);
+                        ADD_FAILURE();
+                        break;
+                    }
+                    InFlightRequest *r = mParent->mInflightMap.editValueAt(idx);
+
+                    if (ErrorCode::ERROR_RESULT == messages[i].msg.error.errorCode &&
+                            messages[i].msg.error.errorStreamId != -1) {
+                        if (r->haveResultMetadata) {
+                            ALOGE("%s: Camera must report physical camera result error before "
+                                    "the final capture result!", __func__);
+                            ADD_FAILURE();
+                        } else {
+                            for (size_t j = 0; j < mStreams.size(); j++) {
+                                if (mStreams[j].v3_2.id == messages[i].msg.error.errorStreamId) {
+                                    hidl_string physicalCameraId = mStreams[j].physicalCameraId;
+                                    bool idExpected = r->expectedPhysicalResults.find(
+                                            physicalCameraId) != r->expectedPhysicalResults.end();
+                                    if (!idExpected) {
+                                        ALOGE("%s: ERROR_RESULT's error stream's physicalCameraId "
+                                                "%s must be expected", __func__,
+                                                physicalCameraId.c_str());
+                                        ADD_FAILURE();
+                                    } else {
+                                        r->expectedPhysicalResults.erase(physicalCameraId);
+                                    }
+                                    break;
+                                }
+                            }
+                        }
+                    } else {
+                        r->errorCodeValid = true;
+                        r->errorCode = messages[i].msg.error.errorCode;
+                        r->errorStreamId = messages[i].msg.error.errorStreamId;
+                  }
                 }
                 break;
             case MsgType::SHUTTER:
+            {
+                ssize_t idx = mParent->mInflightMap.indexOfKey(messages[i].msg.shutter.frameNumber);
+                if (::android::NAME_NOT_FOUND == idx) {
+                    ALOGE("%s: Unexpected shutter frame number! received: %u",
+                          __func__, messages[i].msg.shutter.frameNumber);
+                    ADD_FAILURE();
+                    break;
+                }
+                InFlightRequest *r = mParent->mInflightMap.editValueAt(idx);
                 r->shutterTimestamp = messages[i].msg.shutter.timestamp;
+            }
                 break;
             default:
                 ALOGE("%s: Unsupported notify message %d", __func__,
@@ -1357,7 +1409,7 @@
     for (size_t i = 0; i < bufReqs.size(); i++) {
         bool found = false;
         for (size_t idx = 0; idx < mStreams.size(); idx++) {
-            if (bufReqs[i].streamId == mStreams[idx].id) {
+            if (bufReqs[i].streamId == mStreams[idx].v3_2.id) {
                 found = true;
                 indexes[i] = idx;
                 break;
@@ -1381,7 +1433,7 @@
         const auto& halStream = mHalStreams[idx];
         const V3_5::BufferRequest& bufReq = bufReqs[i];
         if (mOutstandingBufferIds[idx].size() + bufReq.numBuffersRequested > halStream.maxBuffers) {
-            bufRets[i].streamId = stream.id;
+            bufRets[i].streamId = stream.v3_2.id;
             bufRets[i].val.error(StreamBufferRequestError::MAX_BUFFER_EXCEEDED);
             allStreamOk = false;
             continue;
@@ -1390,17 +1442,17 @@
         hidl_vec<StreamBuffer> tmpRetBuffers(bufReq.numBuffersRequested);
         for (size_t j = 0; j < bufReq.numBuffersRequested; j++) {
             hidl_handle buffer_handle;
-            mParent->allocateGraphicBuffer(stream.width, stream.height,
+            mParent->allocateGraphicBuffer(stream.v3_2.width, stream.v3_2.height,
                     android_convertGralloc1To0Usage(
                             halStream.producerUsage, halStream.consumerUsage),
                     halStream.overrideFormat, &buffer_handle);
 
-            tmpRetBuffers[j] = {stream.id, mNextBufferId, buffer_handle, BufferStatus::OK,
+            tmpRetBuffers[j] = {stream.v3_2.id, mNextBufferId, buffer_handle, BufferStatus::OK,
                                 nullptr, nullptr};
             mOutstandingBufferIds[idx].insert(std::make_pair(mNextBufferId++, buffer_handle));
         }
         atLeastOneStreamOk = true;
-        bufRets[i].streamId = stream.id;
+        bufRets[i].streamId = stream.v3_2.id;
         bufRets[i].val.buffers(std::move(tmpRetBuffers));
     }
 
@@ -1426,11 +1478,11 @@
         ADD_FAILURE();
     }
 
-    std::lock_guard<std::mutex> l(mLock);
+    std::unique_lock<std::mutex> l(mLock);
     for (const auto& buf : buffers) {
         bool found = false;
         for (size_t idx = 0; idx < mOutstandingBufferIds.size(); idx++) {
-            if (mStreams[idx].id == buf.streamId &&
+            if (mStreams[idx].v3_2.id == buf.streamId &&
                     mOutstandingBufferIds[idx].count(buf.bufferId) == 1) {
                 mOutstandingBufferIds[idx].erase(buf.bufferId);
                 // TODO: check do we need to close/delete native handle or assume we have enough
@@ -1446,6 +1498,10 @@
         ALOGE("%s: unknown buffer ID %" PRIu64, __FUNCTION__, buf.bufferId);
         ADD_FAILURE();
     }
+    if (!hasOutstandingBuffersLocked()) {
+        l.unlock();
+        mFlushedCondition.notify_one();
+    }
     return Void();
 }
 
@@ -1506,7 +1562,7 @@
 }
 
 // Test devices with first_api_level >= P does not advertise device@1.0
-TEST_F(CameraHidlTest, noHal1AfterP) {
+TEST_P(CameraHidlTest, noHal1AfterP) {
     constexpr int32_t HAL1_PHASE_OUT_API_LEVEL = 28;
     int32_t firstApiLevel = 0;
     getFirstApiLevel(&firstApiLevel);
@@ -1531,7 +1587,7 @@
 
 // Test if ICameraProvider::isTorchModeSupported returns Status::OK
 // Also if first_api_level >= Q torch API must be supported.
-TEST_F(CameraHidlTest, isTorchModeSupported) {
+TEST_P(CameraHidlTest, isTorchModeSupported) {
     constexpr int32_t API_LEVEL_Q = 29;
     int32_t firstApiLevel = 0;
     getFirstApiLevel(&firstApiLevel);
@@ -1548,7 +1604,7 @@
 }
 
 // TODO: consider removing this test if getCameraDeviceNames() has the same coverage
-TEST_F(CameraHidlTest, getCameraIdList) {
+TEST_P(CameraHidlTest, getCameraIdList) {
     Return<void> ret;
     ret = mProvider->getCameraIdList([&](auto status, const auto& idList) {
         ALOGI("getCameraIdList returns status:%d", (int)status);
@@ -1561,7 +1617,7 @@
 }
 
 // Test if ICameraProvider::getVendorTags returns Status::OK
-TEST_F(CameraHidlTest, getVendorTags) {
+TEST_P(CameraHidlTest, getVendorTags) {
     Return<void> ret;
     ret = mProvider->getVendorTags([&](auto status, const auto& vendorTagSecs) {
         ALOGI("getVendorTags returns status:%d numSections %zu", (int)status, vendorTagSecs.size());
@@ -1579,7 +1635,7 @@
 }
 
 // Test if ICameraProvider::setCallback returns Status::OK
-TEST_F(CameraHidlTest, setCallback) {
+TEST_P(CameraHidlTest, setCallback) {
     struct ProviderCb : public ICameraProviderCallback {
         virtual Return<void> cameraDeviceStatusChange(
                 const hidl_string& cameraDeviceName,
@@ -1597,6 +1653,33 @@
             return Void();
         }
     };
+
+    struct ProviderCb2_6
+        : public ::android::hardware::camera::provider::V2_6::ICameraProviderCallback {
+        virtual Return<void> cameraDeviceStatusChange(const hidl_string& cameraDeviceName,
+                                                      CameraDeviceStatus newStatus) override {
+            ALOGI("camera device status callback name %s, status %d", cameraDeviceName.c_str(),
+                  (int)newStatus);
+            return Void();
+        }
+
+        virtual Return<void> torchModeStatusChange(const hidl_string& cameraDeviceName,
+                                                   TorchModeStatus newStatus) override {
+            ALOGI("Torch mode status callback name %s, status %d", cameraDeviceName.c_str(),
+                  (int)newStatus);
+            return Void();
+        }
+
+        virtual Return<void> physicalCameraDeviceStatusChange(
+                const hidl_string& cameraDeviceName, const hidl_string& physicalCameraDeviceName,
+                CameraDeviceStatus newStatus) override {
+            ALOGI("physical camera device status callback name %s, physical camera name %s,"
+                  " status %d",
+                  cameraDeviceName.c_str(), physicalCameraDeviceName.c_str(), (int)newStatus);
+            return Void();
+        }
+    };
+
     sp<ProviderCb> cb = new ProviderCb;
     auto status = mProvider->setCallback(cb);
     ASSERT_TRUE(status.isOk());
@@ -1604,10 +1687,20 @@
     status = mProvider->setCallback(nullptr);
     ASSERT_TRUE(status.isOk());
     ASSERT_EQ(Status::OK, status);
+
+    if (mProvider2_6.get() != nullptr) {
+        sp<ProviderCb2_6> cb = new ProviderCb2_6;
+        auto status = mProvider2_6->setCallback(cb);
+        ASSERT_TRUE(status.isOk());
+        ASSERT_EQ(Status::OK, status);
+        status = mProvider2_6->setCallback(nullptr);
+        ASSERT_TRUE(status.isOk());
+        ASSERT_EQ(Status::OK, status);
+    }
 }
 
 // Test if ICameraProvider::getCameraDeviceInterface returns Status::OK and non-null device
-TEST_F(CameraHidlTest, getCameraDeviceInterface) {
+TEST_P(CameraHidlTest, getCameraDeviceInterface) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
 
     for (const auto& name : cameraDeviceNames) {
@@ -1649,7 +1742,7 @@
 
 // Verify that the device resource cost can be retrieved and the values are
 // sane.
-TEST_F(CameraHidlTest, getResourceCost) {
+TEST_P(CameraHidlTest, getResourceCost) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
 
     for (const auto& name : cameraDeviceNames) {
@@ -1719,7 +1812,7 @@
 
 // Verify that the static camera info can be retrieved
 // successfully.
-TEST_F(CameraHidlTest, getCameraInfo) {
+TEST_P(CameraHidlTest, getCameraInfo) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
 
     for (const auto& name : cameraDeviceNames) {
@@ -1767,7 +1860,7 @@
 }
 
 // Check whether preview window can be configured
-TEST_F(CameraHidlTest, setPreviewWindow) {
+TEST_P(CameraHidlTest, setPreviewWindow) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
 
     for (const auto& name : cameraDeviceNames) {
@@ -1787,7 +1880,7 @@
 }
 
 // Verify that setting preview window fails in case device is not open
-TEST_F(CameraHidlTest, setPreviewWindowInvalid) {
+TEST_P(CameraHidlTest, setPreviewWindowInvalid) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
 
     for (const auto& name : cameraDeviceNames) {
@@ -1812,7 +1905,7 @@
 }
 
 // Start and stop preview checking whether it gets enabled in between.
-TEST_F(CameraHidlTest, startStopPreview) {
+TEST_P(CameraHidlTest, startStopPreview) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
 
     for (const auto& name : cameraDeviceNames) {
@@ -1837,7 +1930,7 @@
 
 // Start preview without active preview window. Preview should start as soon
 // as a valid active window gets configured.
-TEST_F(CameraHidlTest, startStopPreviewDelayed) {
+TEST_P(CameraHidlTest, startStopPreviewDelayed) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
 
     for (const auto& name : cameraDeviceNames) {
@@ -1867,7 +1960,7 @@
 }
 
 // Verify that image capture behaves as expected along with preview callbacks.
-TEST_F(CameraHidlTest, takePicture) {
+TEST_P(CameraHidlTest, takePicture) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
 
     for (const auto& name : cameraDeviceNames) {
@@ -1916,7 +2009,7 @@
 }
 
 // Image capture should fail in case preview didn't get enabled first.
-TEST_F(CameraHidlTest, takePictureFail) {
+TEST_P(CameraHidlTest, takePictureFail) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
 
     for (const auto& name : cameraDeviceNames) {
@@ -1936,7 +2029,7 @@
 }
 
 // Verify that image capture can be cancelled.
-TEST_F(CameraHidlTest, cancelPicture) {
+TEST_P(CameraHidlTest, cancelPicture) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
 
     for (const auto& name : cameraDeviceNames) {
@@ -1963,7 +2056,7 @@
 }
 
 // Image capture cancel is a no-op when image capture is not running.
-TEST_F(CameraHidlTest, cancelPictureNOP) {
+TEST_P(CameraHidlTest, cancelPictureNOP) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
 
     for (const auto& name : cameraDeviceNames) {
@@ -1986,7 +2079,7 @@
 }
 
 // Test basic video recording.
-TEST_F(CameraHidlTest, startStopRecording) {
+TEST_P(CameraHidlTest, startStopRecording) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
 
     for (const auto& name : cameraDeviceNames) {
@@ -2064,7 +2157,7 @@
 }
 
 // It shouldn't be possible to start recording without enabling preview first.
-TEST_F(CameraHidlTest, startRecordingFail) {
+TEST_P(CameraHidlTest, startRecordingFail) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
 
     for (const auto& name : cameraDeviceNames) {
@@ -2088,7 +2181,7 @@
 }
 
 // Check autofocus support if available.
-TEST_F(CameraHidlTest, autoFocus) {
+TEST_P(CameraHidlTest, autoFocus) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
     std::vector<const char*> focusModes = {CameraParameters::FOCUS_MODE_AUTO,
                                            CameraParameters::FOCUS_MODE_CONTINUOUS_PICTURE,
@@ -2149,7 +2242,7 @@
 }
 
 // In case autofocus is supported verify that it can be cancelled.
-TEST_F(CameraHidlTest, cancelAutoFocus) {
+TEST_P(CameraHidlTest, cancelAutoFocus) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
 
     for (const auto& name : cameraDeviceNames) {
@@ -2195,7 +2288,7 @@
 }
 
 // Check whether face detection is available and try to enable&disable.
-TEST_F(CameraHidlTest, sendCommandFaceDetection) {
+TEST_P(CameraHidlTest, sendCommandFaceDetection) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
 
     for (const auto& name : cameraDeviceNames) {
@@ -2250,7 +2343,7 @@
 }
 
 // Check whether smooth zoom is available and try to enable&disable.
-TEST_F(CameraHidlTest, sendCommandSmoothZoom) {
+TEST_P(CameraHidlTest, sendCommandSmoothZoom) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
 
     for (const auto& name : cameraDeviceNames) {
@@ -2298,7 +2391,7 @@
 }
 
 // Basic sanity tests related to camera parameters.
-TEST_F(CameraHidlTest, getSetParameters) {
+TEST_P(CameraHidlTest, getSetParameters) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
 
     for (const auto& name : cameraDeviceNames) {
@@ -2390,7 +2483,7 @@
 
 // Verify that the static camera characteristics can be retrieved
 // successfully.
-TEST_F(CameraHidlTest, getCameraCharacteristics) {
+TEST_P(CameraHidlTest, getCameraCharacteristics) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
 
     for (const auto& name : cameraDeviceNames) {
@@ -2456,7 +2549,7 @@
 
 //In case it is supported verify that torch can be enabled.
 //Check for corresponding toch callbacks as well.
-TEST_F(CameraHidlTest, setTorchMode) {
+TEST_P(CameraHidlTest, setTorchMode) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
     bool torchControlSupported = false;
     Return<void> ret;
@@ -2594,7 +2687,7 @@
 }
 
 // Check dump functionality.
-TEST_F(CameraHidlTest, dumpState) {
+TEST_P(CameraHidlTest, dumpState) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
     Return<void> ret;
 
@@ -2659,7 +2752,7 @@
 }
 
 // Open, dumpStates, then close
-TEST_F(CameraHidlTest, openClose) {
+TEST_P(CameraHidlTest, openClose) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
     Return<void> ret;
 
@@ -2752,7 +2845,7 @@
 
 // Check whether all common default request settings can be sucessfully
 // constructed.
-TEST_F(CameraHidlTest, constructDefaultRequestSettings) {
+TEST_P(CameraHidlTest, constructDefaultRequestSettings) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
 
     for (const auto& name : cameraDeviceNames) {
@@ -2809,13 +2902,7 @@
                                             metadata, &expectedSize);
                                     ASSERT_TRUE((result == 0) ||
                                             (result == CAMERA_METADATA_VALIDATION_SHIFTED));
-                                    size_t entryCount =
-                                            get_camera_metadata_entry_count(metadata);
-                                    // TODO: we can do better than 0 here. Need to check how many required
-                                    // request keys we've defined for each template
-                                    ASSERT_GT(entryCount, 0u);
-                                    ALOGI("template %u metadata entry count is %zu",
-                                          t, entryCount);
+                                    verifyRequestTemplate(metadata, reqTemplate);
                                 } else {
                                     ASSERT_EQ(0u, req.size());
                                 }
@@ -2842,7 +2929,7 @@
 
 // Verify that all supported stream formats and sizes can be configured
 // successfully.
-TEST_F(CameraHidlTest, configureStreamsAvailableOutputs) {
+TEST_P(CameraHidlTest, configureStreamsAvailableOutputs) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
     std::vector<AvailableStream> outputStreams;
 
@@ -2950,7 +3037,7 @@
 }
 
 // Check for correct handling of invalid/incorrect configuration parameters.
-TEST_F(CameraHidlTest, configureStreamsInvalidOutputs) {
+TEST_P(CameraHidlTest, configureStreamsInvalidOutputs) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
     std::vector<AvailableStream> outputStreams;
 
@@ -3146,7 +3233,7 @@
 
 // Check whether all supported ZSL output stream combinations can be
 // configured successfully.
-TEST_F(CameraHidlTest, configureStreamsZSLInputOutputs) {
+TEST_P(CameraHidlTest, configureStreamsZSLInputOutputs) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
     std::vector<AvailableStream> inputStreams;
     std::vector<AvailableZSLInputOutput> inputOutputMap;
@@ -3312,7 +3399,7 @@
 
 // Check whether session parameters are supported. If Hal support for them
 // exist, then try to configure a preview stream using them.
-TEST_F(CameraHidlTest, configureStreamsWithSessionParameters) {
+TEST_P(CameraHidlTest, configureStreamsWithSessionParameters) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
     std::vector<AvailableStream> outputPreviewStreams;
     AvailableStream previewThreshold = {kMaxPreviewWidth, kMaxPreviewHeight,
@@ -3431,7 +3518,7 @@
 
 // Verify that all supported preview + still capture stream combinations
 // can be configured successfully.
-TEST_F(CameraHidlTest, configureStreamsPreviewStillOutputs) {
+TEST_P(CameraHidlTest, configureStreamsPreviewStillOutputs) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
     std::vector<AvailableStream> outputBlobStreams;
     std::vector<AvailableStream> outputPreviewStreams;
@@ -3554,7 +3641,7 @@
 // In case constrained mode is supported, test whether it can be
 // configured. Additionally check for common invalid inputs when
 // using this mode.
-TEST_F(CameraHidlTest, configureStreamsConstrainedOutputs) {
+TEST_P(CameraHidlTest, configureStreamsConstrainedOutputs) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
 
     for (const auto& name : cameraDeviceNames) {
@@ -3759,7 +3846,7 @@
 
 // Verify that all supported video + snapshot stream combinations can
 // be configured successfully.
-TEST_F(CameraHidlTest, configureStreamsVideoStillOutputs) {
+TEST_P(CameraHidlTest, configureStreamsVideoStillOutputs) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
     std::vector<AvailableStream> outputBlobStreams;
     std::vector<AvailableStream> outputVideoStreams;
@@ -3880,7 +3967,7 @@
 }
 
 // Generate and verify a camera capture request
-TEST_F(CameraHidlTest, processCaptureRequestPreview) {
+TEST_P(CameraHidlTest, processCaptureRequestPreview) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
     AvailableStream previewThreshold = {kMaxPreviewWidth, kMaxPreviewHeight,
                                         static_cast<int32_t>(PixelFormat::IMPLEMENTATION_DEFINED)};
@@ -4048,7 +4135,7 @@
 }
 
 // Generate and verify a multi-camera capture request
-TEST_F(CameraHidlTest, processMultiCaptureRequestPreview) {
+TEST_P(CameraHidlTest, processMultiCaptureRequestPreview) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
     AvailableStream previewThreshold = {kMaxPreviewWidth, kMaxPreviewHeight,
                                         static_cast<int32_t>(PixelFormat::YCBCR_420_888)};
@@ -4117,7 +4204,7 @@
 
         // Leave only 2 physical devices in the id set.
         auto it = physicalIds.begin();
-        string physicalDeviceId = *it; it++;
+        std::string physicalDeviceId = *it; it++;
         physicalIds.erase(++it, physicalIds.end());
         ASSERT_EQ(physicalIds.size(), 2u);
 
@@ -4157,7 +4244,7 @@
         ASSERT_TRUE(resultQueueRet.isOk());
 
         InFlightRequest inflightReq = {static_cast<ssize_t> (halStreamConfig.streams.size()), false,
-            supportsPartialResults, partialResultCount, resultQueue};
+            supportsPartialResults, partialResultCount, physicalIds, resultQueue};
 
         std::vector<hidl_handle> graphicBuffers;
         graphicBuffers.reserve(halStreamConfig.streams.size());
@@ -4236,7 +4323,7 @@
             request.v3_2.outputBuffers[0].buffer = nullptr;
             mInflightMap.clear();
             inflightReq = {static_cast<ssize_t> (physicalIds.size()), false,
-                supportsPartialResults, partialResultCount, resultQueue};
+                supportsPartialResults, partialResultCount, physicalIds, resultQueue};
             mInflightMap.add(request.v3_2.frameNumber, &inflightReq);
         }
 
@@ -4295,7 +4382,7 @@
 }
 
 // Generate and verify a burst containing alternating sensor sensitivity values
-TEST_F(CameraHidlTest, processCaptureRequestBurstISO) {
+TEST_P(CameraHidlTest, processCaptureRequestBurstISO) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
     AvailableStream previewThreshold = {kMaxPreviewWidth, kMaxPreviewHeight,
                                         static_cast<int32_t>(PixelFormat::IMPLEMENTATION_DEFINED)};
@@ -4453,7 +4540,7 @@
 
 // Test whether an incorrect capture request with missing settings will
 // be reported correctly.
-TEST_F(CameraHidlTest, processCaptureRequestInvalidSinglePreview) {
+TEST_P(CameraHidlTest, processCaptureRequestInvalidSinglePreview) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
     std::vector<AvailableStream> outputPreviewStreams;
     AvailableStream previewThreshold = {kMaxPreviewWidth, kMaxPreviewHeight,
@@ -4528,7 +4615,7 @@
 
 // Check whether an invalid capture request with missing output buffers
 // will be reported correctly.
-TEST_F(CameraHidlTest, processCaptureRequestInvalidBuffer) {
+TEST_P(CameraHidlTest, processCaptureRequestInvalidBuffer) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
     std::vector<AvailableStream> outputBlobStreams;
     AvailableStream previewThreshold = {kMaxPreviewWidth, kMaxPreviewHeight,
@@ -4593,7 +4680,7 @@
 }
 
 // Generate, trigger and flush a preview request
-TEST_F(CameraHidlTest, flushPreviewRequest) {
+TEST_P(CameraHidlTest, flushPreviewRequest) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
     std::vector<AvailableStream> outputPreviewStreams;
     AvailableStream previewThreshold = {kMaxPreviewWidth, kMaxPreviewHeight,
@@ -4736,7 +4823,7 @@
 }
 
 // Verify that camera flushes correctly without any pending requests.
-TEST_F(CameraHidlTest, flushEmpty) {
+TEST_P(CameraHidlTest, flushEmpty) {
     hidl_vec<hidl_string> cameraDeviceNames = getCameraDeviceNames(mProvider);
     std::vector<AvailableStream> outputPreviewStreams;
     AvailableStream previewThreshold = {kMaxPreviewWidth, kMaxPreviewHeight,
@@ -4781,7 +4868,7 @@
 }
 
 // Test camera provider@2.5 notify method
-TEST_F(CameraHidlTest, providerDeviceStateNotification) {
+TEST_P(CameraHidlTest, providerDeviceStateNotification) {
 
     notifyDeviceState(provider::V2_5::DeviceState::BACK_COVERED);
     notifyDeviceState(provider::V2_5::DeviceState::NORMAL);
@@ -4789,7 +4876,7 @@
 
 // Retrieve all valid output stream resolutions from the camera
 // static characteristics.
-Status CameraHidlTest::getAvailableOutputStreams(camera_metadata_t *staticMeta,
+Status CameraHidlTest::getAvailableOutputStreams(const camera_metadata_t *staticMeta,
         std::vector<AvailableStream> &outputStreams,
         const AvailableStream *threshold) {
     AvailableStream depthPreviewThreshold = {kMaxPreviewWidth, kMaxPreviewHeight,
@@ -5315,10 +5402,10 @@
                     ASSERT_EQ(physicalIds.size(), halConfig.streams.size());
                     *halStreamConfig = halConfig;
                     if (*useHalBufManager) {
-                        hidl_vec<V3_2::Stream> streams(physicalIds.size());
+                        hidl_vec<V3_4::Stream> streams(physicalIds.size());
                         hidl_vec<V3_2::HalStream> halStreams(physicalIds.size());
                         for (size_t i = 0; i < physicalIds.size(); i++) {
-                            streams[i] = streams3_4[i].v3_2;
+                            streams[i] = streams3_4[i];
                             halStreams[i] = halConfig.streams[i].v3_3.v3_2;
                         }
                         cb->setCurrentStreamConfig(streams, halStreams);
@@ -5493,9 +5580,9 @@
                     halStreamConfig->streams.resize(1);
                     halStreamConfig->streams[0] = halConfig.streams[0].v3_3.v3_2;
                     if (*useHalBufManager) {
-                        hidl_vec<V3_2::Stream> streams(1);
+                        hidl_vec<V3_4::Stream> streams(1);
                         hidl_vec<V3_2::HalStream> halStreams(1);
-                        streams[0] = stream3_2;
+                        streams[0] = config3_4.streams[0];
                         halStreams[0] = halConfig.streams[0].v3_3.v3_2;
                         cb->setCurrentStreamConfig(streams, halStreams);
                     }
@@ -5550,12 +5637,19 @@
 }
 
 //Cast camera provider to corresponding version if available
-void CameraHidlTest::castProvider(const sp<ICameraProvider> &provider,
-        sp<provider::V2_5::ICameraProvider> *provider2_5 /*out*/) {
+void CameraHidlTest::castProvider(const sp<ICameraProvider>& provider,
+                                  sp<provider::V2_5::ICameraProvider>* provider2_5 /*out*/,
+                                  sp<provider::V2_6::ICameraProvider>* provider2_6 /*out*/) {
     ASSERT_NE(nullptr, provider2_5);
-    auto castResult = provider::V2_5::ICameraProvider::castFrom(provider);
-    if (castResult.isOk()) {
-        *provider2_5 = castResult;
+    auto castResult2_5 = provider::V2_5::ICameraProvider::castFrom(provider);
+    if (castResult2_5.isOk()) {
+        *provider2_5 = castResult2_5;
+    }
+
+    ASSERT_NE(nullptr, provider2_6);
+    auto castResult2_6 = provider::V2_6::ICameraProvider::castFrom(provider);
+    if (castResult2_6.isOk()) {
+        *provider2_6 = castResult2_6;
     }
 }
 
@@ -5623,6 +5717,11 @@
         return;
     }
 
+    camera_metadata_ro_entry entry;
+    int retcode = find_camera_metadata_ro_entry(metadata,
+            ANDROID_CONTROL_ZOOM_RATIO_RANGE, &entry);
+    bool hasZoomRatioRange = (0 == retcode && entry.count == 2);
+
     std::string version, cameraId;
     ASSERT_TRUE(::matchDeviceName(cameraName, mProviderType, &version, &cameraId));
     std::unordered_set<std::string> physicalIds;
@@ -5630,15 +5729,37 @@
     for (auto physicalId : physicalIds) {
         ASSERT_NE(physicalId, cameraId);
         bool isPublicId = false;
+        std::string fullPublicId;
         for (auto& deviceName : deviceNames) {
             std::string publicVersion, publicId;
             ASSERT_TRUE(::matchDeviceName(deviceName, mProviderType, &publicVersion, &publicId));
             if (physicalId == publicId) {
                 isPublicId = true;
+                fullPublicId = deviceName;
                 break;
             }
         }
         if (isPublicId) {
+            ::android::sp<::android::hardware::camera::device::V3_2::ICameraDevice> subDevice;
+            Return<void> ret;
+            ret = mProvider->getCameraDeviceInterface_V3_x(
+                fullPublicId, [&](auto status, const auto& device) {
+                    ASSERT_EQ(Status::OK, status);
+                    ASSERT_NE(device, nullptr);
+                    subDevice = device;
+                });
+            ASSERT_TRUE(ret.isOk());
+
+            ret = subDevice->getCameraCharacteristics(
+                    [&](auto status, const auto& chars) {
+                ASSERT_EQ(Status::OK, status);
+                retcode = find_camera_metadata_ro_entry(
+                        (const camera_metadata_t *)chars.data(),
+                        ANDROID_CONTROL_ZOOM_RATIO_RANGE, &entry);
+                bool subCameraHasZoomRatioRange = (0 == retcode && entry.count == 2);
+                ASSERT_EQ(hasZoomRatioRange, subCameraHasZoomRatioRange);
+            });
+            ASSERT_TRUE(ret.isOk());
             continue;
         }
 
@@ -5654,6 +5775,12 @@
                 [&](auto status, const auto& chars) {
             verifyCameraCharacteristics(status, chars);
             verifyMonochromeCharacteristics(chars, deviceVersion);
+
+            retcode = find_camera_metadata_ro_entry(
+                    (const camera_metadata_t *)chars.data(),
+                    ANDROID_CONTROL_ZOOM_RATIO_RANGE, &entry);
+            bool subCameraHasZoomRatioRange = (0 == retcode && entry.count == 2);
+            ASSERT_EQ(hasZoomRatioRange, subCameraHasZoomRatioRange);
         });
         ASSERT_TRUE(ret.isOk());
 
@@ -5673,8 +5800,7 @@
     // Make sure ANDROID_LOGICAL_MULTI_CAMERA_ACTIVE_PHYSICAL_ID is available in
     // result keys.
     if (deviceVersion >= CAMERA_DEVICE_API_VERSION_3_5) {
-        camera_metadata_ro_entry entry;
-        int retcode = find_camera_metadata_ro_entry(metadata,
+        retcode = find_camera_metadata_ro_entry(metadata,
                 ANDROID_REQUEST_AVAILABLE_RESULT_KEYS, &entry);
         if ((0 == retcode) && (entry.count > 0)) {
                 ASSERT_NE(std::find(entry.data.i32, entry.data.i32 + entry.count,
@@ -5772,6 +5898,216 @@
             ADD_FAILURE() << "Get Heic maxJpegAppSegmentsCount failed!";
         }
     }
+
+    retcode = find_camera_metadata_ro_entry(metadata,
+            ANDROID_LENS_POSE_REFERENCE, &entry);
+    if (0 == retcode && entry.count > 0) {
+        uint8_t poseReference = entry.data.u8[0];
+        ASSERT_TRUE(poseReference <= ANDROID_LENS_POSE_REFERENCE_UNDEFINED &&
+                poseReference >= ANDROID_LENS_POSE_REFERENCE_PRIMARY_CAMERA);
+    }
+
+    verifyBokehCharacteristics(metadata);
+    verifyZoomCharacteristics(metadata);
+}
+
+void CameraHidlTest::verifyBokehCharacteristics(const camera_metadata_t* metadata) {
+    camera_metadata_ro_entry entry;
+    int retcode = 0;
+
+    // Check key availability in capabilities, request and result.
+
+    retcode = find_camera_metadata_ro_entry(metadata,
+            ANDROID_REQUEST_AVAILABLE_REQUEST_KEYS, &entry);
+    bool hasBokehRequestKey = false;
+    if ((0 == retcode) && (entry.count > 0)) {
+        hasBokehRequestKey = std::find(entry.data.i32, entry.data.i32+entry.count,
+                ANDROID_CONTROL_BOKEH_MODE) != entry.data.i32+entry.count;
+    } else {
+        ADD_FAILURE() << "Get camera availableRequestKeys failed!";
+    }
+
+    retcode = find_camera_metadata_ro_entry(metadata,
+            ANDROID_REQUEST_AVAILABLE_RESULT_KEYS, &entry);
+    bool hasBokehResultKey = false;
+    if ((0 == retcode) && (entry.count > 0)) {
+        hasBokehResultKey = std::find(entry.data.i32, entry.data.i32+entry.count,
+                ANDROID_CONTROL_BOKEH_MODE) != entry.data.i32+entry.count;
+    } else {
+        ADD_FAILURE() << "Get camera availableResultKeys failed!";
+    }
+
+    retcode = find_camera_metadata_ro_entry(metadata,
+            ANDROID_REQUEST_AVAILABLE_CHARACTERISTICS_KEYS, &entry);
+    bool hasBokehMaxSizesKey = false;
+    bool hasBokehZoomRatioRangesKey = false;
+    if ((0 == retcode) && (entry.count > 0)) {
+        hasBokehMaxSizesKey = std::find(entry.data.i32, entry.data.i32+entry.count,
+                ANDROID_CONTROL_AVAILABLE_BOKEH_MAX_SIZES) != entry.data.i32+entry.count;
+        hasBokehZoomRatioRangesKey = std::find(entry.data.i32, entry.data.i32+entry.count,
+                ANDROID_CONTROL_AVAILABLE_BOKEH_ZOOM_RATIO_RANGES) != entry.data.i32+entry.count;
+    } else {
+        ADD_FAILURE() << "Get camera availableCharacteristicsKeys failed!";
+    }
+
+    camera_metadata_ro_entry maxSizesEntry;
+    retcode = find_camera_metadata_ro_entry(metadata,
+            ANDROID_CONTROL_AVAILABLE_BOKEH_MAX_SIZES, &maxSizesEntry);
+    bool hasBokehMaxSizes = (0 == retcode && maxSizesEntry.count > 0);
+
+    camera_metadata_ro_entry zoomRatioRangesEntry;
+    retcode = find_camera_metadata_ro_entry(metadata,
+            ANDROID_CONTROL_AVAILABLE_BOKEH_ZOOM_RATIO_RANGES, &zoomRatioRangesEntry);
+    bool hasBokehZoomRatioRanges = (0 == retcode && zoomRatioRangesEntry.count > 0);
+
+    // Bokeh keys must all be available, or all be unavailable.
+    bool noBokeh = !hasBokehRequestKey && !hasBokehResultKey && !hasBokehMaxSizesKey &&
+            !hasBokehZoomRatioRangesKey && !hasBokehMaxSizes && !hasBokehZoomRatioRanges;
+    if (noBokeh) {
+        return;
+    }
+    bool hasBokeh = hasBokehRequestKey && hasBokehResultKey && hasBokehMaxSizesKey &&
+            hasBokehZoomRatioRangesKey && hasBokehMaxSizes && hasBokehZoomRatioRanges;
+    ASSERT_TRUE(hasBokeh);
+
+    // Must have OFF, and must have one of STILL_CAPTURE and CONTINUOUS.
+    // Only valid combinations: {OFF, CONTINUOUS}, {OFF, STILL_CAPTURE}, and
+    // {OFF, CONTINUOUS, STILL_CAPTURE}.
+    ASSERT_TRUE((maxSizesEntry.count == 6 && zoomRatioRangesEntry.count == 2) ||
+            (maxSizesEntry.count == 9 && zoomRatioRangesEntry.count == 4));
+    bool hasOffMode = false;
+    bool hasStillCaptureMode = false;
+    bool hasContinuousMode = false;
+    std::vector<AvailableStream> outputStreams;
+    ASSERT_EQ(Status::OK, getAvailableOutputStreams(metadata, outputStreams));
+    for (int i = 0, j = 0; i < maxSizesEntry.count && j < zoomRatioRangesEntry.count; i += 3) {
+        int32_t mode = maxSizesEntry.data.i32[i];
+        int32_t maxWidth = maxSizesEntry.data.i32[i+1];
+        int32_t maxHeight = maxSizesEntry.data.i32[i+2];
+        switch (mode) {
+            case ANDROID_CONTROL_BOKEH_MODE_OFF:
+                hasOffMode = true;
+                ASSERT_TRUE(maxWidth == 0 && maxHeight == 0);
+                break;
+            case ANDROID_CONTROL_BOKEH_MODE_STILL_CAPTURE:
+                hasStillCaptureMode = true;
+                j += 2;
+                break;
+            case ANDROID_CONTROL_BOKEH_MODE_CONTINUOUS:
+                hasContinuousMode = true;
+                j += 2;
+                break;
+            default:
+                ADD_FAILURE() << "Invalid bokehMode advertised: " << mode;
+                break;
+        }
+
+        if (mode != ANDROID_CONTROL_BOKEH_MODE_OFF) {
+            // Make sure size is supported.
+            bool sizeSupported = false;
+            for (const auto& stream : outputStreams) {
+                if ((stream.format == static_cast<int32_t>(PixelFormat::YCBCR_420_888) ||
+                        stream.format == static_cast<int32_t>(PixelFormat::IMPLEMENTATION_DEFINED))
+                        && stream.width == maxWidth && stream.height == maxHeight) {
+                    sizeSupported = true;
+                    break;
+                }
+            }
+            ASSERT_TRUE(sizeSupported);
+
+            // Make sure zoom range is valid
+            float minZoomRatio = zoomRatioRangesEntry.data.f[0];
+            float maxZoomRatio = zoomRatioRangesEntry.data.f[1];
+            ASSERT_GT(minZoomRatio, 0.0f);
+            ASSERT_LE(minZoomRatio, maxZoomRatio);
+        }
+    }
+    ASSERT_TRUE(hasOffMode);
+    ASSERT_TRUE(hasStillCaptureMode || hasContinuousMode);
+}
+
+void CameraHidlTest::verifyZoomCharacteristics(const camera_metadata_t* metadata) {
+    camera_metadata_ro_entry entry;
+    int retcode = 0;
+
+    // Check key availability in capabilities, request and result.
+    retcode = find_camera_metadata_ro_entry(metadata,
+            ANDROID_SCALER_AVAILABLE_MAX_DIGITAL_ZOOM, &entry);
+    float maxDigitalZoom = 1.0;
+    if ((0 == retcode) && (entry.count == 1)) {
+        maxDigitalZoom = entry.data.f[0];
+    } else {
+        ADD_FAILURE() << "Get camera scalerAvailableMaxDigitalZoom failed!";
+    }
+
+    retcode = find_camera_metadata_ro_entry(metadata,
+            ANDROID_REQUEST_AVAILABLE_REQUEST_KEYS, &entry);
+    bool hasZoomRequestKey = false;
+    if ((0 == retcode) && (entry.count > 0)) {
+        hasZoomRequestKey = std::find(entry.data.i32, entry.data.i32+entry.count,
+                ANDROID_CONTROL_ZOOM_RATIO) != entry.data.i32+entry.count;
+    } else {
+        ADD_FAILURE() << "Get camera availableRequestKeys failed!";
+    }
+
+    retcode = find_camera_metadata_ro_entry(metadata,
+            ANDROID_REQUEST_AVAILABLE_RESULT_KEYS, &entry);
+    bool hasZoomResultKey = false;
+    if ((0 == retcode) && (entry.count > 0)) {
+        hasZoomResultKey = std::find(entry.data.i32, entry.data.i32+entry.count,
+                ANDROID_CONTROL_ZOOM_RATIO) != entry.data.i32+entry.count;
+    } else {
+        ADD_FAILURE() << "Get camera availableResultKeys failed!";
+    }
+
+    retcode = find_camera_metadata_ro_entry(metadata,
+            ANDROID_REQUEST_AVAILABLE_CHARACTERISTICS_KEYS, &entry);
+    bool hasZoomCharacteristicsKey = false;
+    if ((0 == retcode) && (entry.count > 0)) {
+        hasZoomCharacteristicsKey = std::find(entry.data.i32, entry.data.i32+entry.count,
+                ANDROID_CONTROL_ZOOM_RATIO_RANGE) != entry.data.i32+entry.count;
+    } else {
+        ADD_FAILURE() << "Get camera availableCharacteristicsKeys failed!";
+    }
+
+    retcode = find_camera_metadata_ro_entry(metadata,
+            ANDROID_CONTROL_ZOOM_RATIO_RANGE, &entry);
+    bool hasZoomRatioRange = (0 == retcode && entry.count == 2);
+
+    // Zoom keys must all be available, or all be unavailable.
+    bool noZoomRatio = !hasZoomRequestKey && !hasZoomResultKey && !hasZoomCharacteristicsKey &&
+            !hasZoomRatioRange;
+    if (noZoomRatio) {
+        return;
+    }
+    bool hasZoomRatio = hasZoomRequestKey && hasZoomResultKey && hasZoomCharacteristicsKey &&
+            hasZoomRatioRange;
+    ASSERT_TRUE(hasZoomRatio);
+
+    float minZoomRatio = entry.data.f[0];
+    float maxZoomRatio = entry.data.f[1];
+    if (maxDigitalZoom != maxZoomRatio) {
+        ADD_FAILURE() << "Maximum zoom ratio is different than maximum digital zoom!";
+    }
+    if (minZoomRatio > maxZoomRatio) {
+        ADD_FAILURE() << "Maximum zoom ratio is less than minimum zoom ratio!";
+    }
+    if (minZoomRatio > 1.0f) {
+        ADD_FAILURE() << "Minimum zoom ratio is more than 1.0!";
+    }
+    if (maxZoomRatio < 1.0f) {
+        ADD_FAILURE() << "Maximum zoom ratio is less than 1.0!";
+    }
+
+    // Make sure CROPPING_TYPE is CENTER_ONLY
+    retcode = find_camera_metadata_ro_entry(metadata,
+            ANDROID_SCALER_CROPPING_TYPE, &entry);
+    if ((0 == retcode) && (entry.count == 1)) {
+        int8_t croppingType = entry.data.u8[0];
+        ASSERT_EQ(croppingType, ANDROID_SCALER_CROPPING_TYPE_CENTER_ONLY);
+    } else {
+        ADD_FAILURE() << "Get camera scalerCroppingType failed!";
+    }
 }
 
 void CameraHidlTest::verifyMonochromeCharacteristics(const CameraMetadata& chars,
@@ -6144,68 +6480,15 @@
         PixelFormat format, hidl_handle *buffer_handle /*out*/) {
     ASSERT_NE(buffer_handle, nullptr);
 
-    sp<android::hardware::graphics::allocator::V2_0::IAllocator> allocator =
-        android::hardware::graphics::allocator::V2_0::IAllocator::getService();
-    sp<android::hardware::graphics::allocator::V3_0::IAllocator> allocatorV3 =
-        android::hardware::graphics::allocator::V3_0::IAllocator::getService();
+    buffer_handle_t buffer;
+    uint32_t stride;
 
-    sp<android::hardware::graphics::mapper::V3_0::IMapper> mapperV3 =
-        android::hardware::graphics::mapper::V3_0::IMapper::getService();
-    sp<android::hardware::graphics::mapper::V2_0::IMapper> mapper =
-        android::hardware::graphics::mapper::V2_0::IMapper::getService();
-    ::android::hardware::hidl_vec<uint32_t> descriptor;
-    if (mapperV3 != nullptr && allocatorV3 != nullptr) {
-        android::hardware::graphics::mapper::V3_0::IMapper::BufferDescriptorInfo descriptorInfo {};
-        descriptorInfo.width = width;
-        descriptorInfo.height = height;
-        descriptorInfo.layerCount = 1;
-        descriptorInfo.format =
-                static_cast<android::hardware::graphics::common::V1_2::PixelFormat>(format);
-        descriptorInfo.usage = usage;
+    android::status_t err = android::GraphicBufferAllocator::get().allocateRawHandle(
+            width, height, static_cast<int32_t>(format), 1u /*layerCount*/, usage, &buffer, &stride,
+            "VtsHalCameraProviderV2_4");
+    ASSERT_EQ(err, android::NO_ERROR);
 
-        auto ret = mapperV3->createDescriptor(
-            descriptorInfo, [&descriptor](android::hardware::graphics::mapper::V3_0::Error err,
-                                ::android::hardware::hidl_vec<uint32_t> desc) {
-                ASSERT_EQ(err, android::hardware::graphics::mapper::V3_0::Error::NONE);
-                descriptor = desc;
-            });
-        ASSERT_TRUE(ret.isOk());
-
-        ret = allocatorV3->allocate(descriptor, 1u,
-            [&](android::hardware::graphics::mapper::V3_0::Error err, uint32_t /*stride*/,
-                const ::android::hardware::hidl_vec<::android::hardware::hidl_handle>& buffers) {
-                ASSERT_EQ(android::hardware::graphics::mapper::V3_0::Error::NONE, err);
-                ASSERT_EQ(buffers.size(), 1u);
-                *buffer_handle = buffers[0];
-            });
-        ASSERT_TRUE(ret.isOk());
-    } else {
-        ASSERT_NE(mapper.get(), nullptr);
-        ASSERT_NE(allocator.get(), nullptr);
-        android::hardware::graphics::mapper::V2_0::IMapper::BufferDescriptorInfo descriptorInfo {};
-        descriptorInfo.width = width;
-        descriptorInfo.height = height;
-        descriptorInfo.layerCount = 1;
-        descriptorInfo.format = format;
-        descriptorInfo.usage = usage;
-
-        auto ret = mapper->createDescriptor(
-            descriptorInfo, [&descriptor](android::hardware::graphics::mapper::V2_0::Error err,
-                                ::android::hardware::hidl_vec<uint32_t> desc) {
-                ASSERT_EQ(err, android::hardware::graphics::mapper::V2_0::Error::NONE);
-                descriptor = desc;
-            });
-        ASSERT_TRUE(ret.isOk());
-
-        ret = allocator->allocate(descriptor, 1u,
-            [&](android::hardware::graphics::mapper::V2_0::Error err, uint32_t /*stride*/,
-                const ::android::hardware::hidl_vec<::android::hardware::hidl_handle>& buffers) {
-                ASSERT_EQ(android::hardware::graphics::mapper::V2_0::Error::NONE, err);
-                ASSERT_EQ(buffers.size(), 1u);
-                *buffer_handle = buffers[0];
-            });
-        ASSERT_TRUE(ret.isOk());
-    }
+    buffer_handle->setTo(const_cast<native_handle_t*>(buffer), true /*shouldOwn*/);
 }
 
 void CameraHidlTest::verifyRecommendedConfigs(const CameraMetadata& chars) {
@@ -6325,11 +6608,27 @@
     }
 }
 
-int main(int argc, char **argv) {
-  ::testing::AddGlobalTestEnvironment(CameraHidlEnvironment::Instance());
-  ::testing::InitGoogleTest(&argc, argv);
-  CameraHidlEnvironment::Instance()->init(&argc, argv);
-  int status = RUN_ALL_TESTS();
-  ALOGI("Test result = %d", status);
-  return status;
+void CameraHidlTest::verifyRequestTemplate(const camera_metadata_t* metadata,
+        RequestTemplate requestTemplate) {
+    ASSERT_NE(nullptr, metadata);
+    size_t entryCount =
+            get_camera_metadata_entry_count(metadata);
+    ALOGI("template %u metadata entry count is %zu", (int32_t)requestTemplate, entryCount);
+    // TODO: we can do better than 0 here. Need to check how many required
+    // request keys we've defined for each template
+    ASSERT_GT(entryCount, 0u);
+
+    // Check zoomRatio
+    camera_metadata_ro_entry zoomRatioEntry;
+    int foundZoomRatio = find_camera_metadata_ro_entry(metadata,
+            ANDROID_CONTROL_ZOOM_RATIO, &zoomRatioEntry);
+    if (foundZoomRatio == 0) {
+        ASSERT_EQ(zoomRatioEntry.count, 1);
+        ASSERT_EQ(zoomRatioEntry.data.f[0], 1.0f);
+    }
 }
+
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, CameraHidlTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(ICameraProvider::descriptor)),
+        android::hardware::PrintInstanceNameToString);
diff --git a/camera/provider/2.6/Android.bp b/camera/provider/2.6/Android.bp
new file mode 100644
index 0000000..e69819c
--- /dev/null
+++ b/camera/provider/2.6/Android.bp
@@ -0,0 +1,26 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.camera.provider@2.6",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "types.hal",
+        "ICameraProvider.hal",
+        "ICameraProviderCallback.hal",
+    ],
+    interfaces: [
+        "android.hardware.camera.common@1.0",
+        "android.hardware.camera.device@1.0",
+        "android.hardware.camera.device@3.2",
+        "android.hardware.camera.device@3.3",
+        "android.hardware.camera.device@3.4",
+        "android.hardware.camera.provider@2.4",
+        "android.hardware.camera.provider@2.5",
+        "android.hardware.graphics.common@1.0",
+        "android.hidl.base@1.0",
+    ],
+    gen_java: false,
+}
diff --git a/camera/provider/2.6/ICameraProvider.hal b/camera/provider/2.6/ICameraProvider.hal
new file mode 100644
index 0000000..0948db6
--- /dev/null
+++ b/camera/provider/2.6/ICameraProvider.hal
@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.camera.provider@2.6;
+
+import @2.5::ICameraProvider;
+import android.hardware.camera.common@1.0::Status;
+import android.hardware.camera.device@3.4::StreamConfiguration;
+
+/**
+ * Camera provider HAL
+ *
+ * @2.6::adds support for the getConcurrentStreamingCameraIds() and
+ * isConcurrentStreamCombinationSupported()
+ * @2.6::ICameraProviderCallback to receive physical camera availability
+ * callbacks for logical multi-cameras.
+ */
+interface ICameraProvider extends @2.5::ICameraProvider {
+    /**
+     * getConcurrentStreamingCameraIds
+     *
+     * Get a vector of combinations of camera device ids that are able to
+     * configure streams concurrently. Each camera device advertised in a
+     * combination MUST at the very least support the following streams while
+     * streaming concurrently with the other camera ids in the combination.
+     *
+     *       Target 1                  Target 2
+     * ---------------------------------------------
+     * | Type  |   Size       |   Type  |   Size   |
+     * ---------------------------------------------
+     * | YUV   |  1280 X 720  |                    |
+     * ---------------------------------------------
+     * | PRIV  |  1280 X 720  |                    |
+     * ---------------------------------------------
+     * | YUV   |  1280 X 720  |   YUV   |1280 X 720|
+     * ---------------------------------------------
+     * | PRIV  |  1280 X 720  |   PRIV  |1280 X 720|
+     * ---------------------------------------------
+     * | PRIV  |  1280 X 720  |   YUV   |1280 X 720|
+     * ---------------------------------------------
+
+     * @return status Status code for the operation
+     * @return cameraIds a list of camera id combinations that support
+     *         concurrent stream configurations with the minimum guarantees
+     *         specified.
+     */
+    getConcurrentStreamingCameraIds() generates (Status status, vec<vec<string>> cameraIds);
+
+    /**
+     * isConcurrentStreamCombinationSupported:
+     *
+     * Check for device support of specific camera stream combinations while
+     * streaming concurrently with other devices.
+     *
+     * The per device streamList must contain at least one output-capable stream, and may
+     * not contain more than one input-capable stream.
+     * In contrast to regular stream configuration the framework does not create
+     * or initialize any actual streams. This means that Hal must not use or
+     * consider the stream "id" value.
+     *
+     * ------------------------------------------------------------------------
+     *
+     * Preconditions:
+     *
+     * The framework can call this method at any time before, during and
+     * after active session configuration per device. This means that calls must not
+     * impact the performance of pending camera requests in any way. In
+     * particular there must not be any glitches or delays during normal
+     * camera streaming.
+     *
+     * The framework must not call this method with any combination of camera
+     * ids that is not a subset of the camera ids advertised by getConcurrentStreamingCameraIds of
+     * the same provider.
+     *
+     * Performance requirements:
+     * This call is expected to be significantly faster than stream
+     * configuration. In general HW and SW camera settings must not be
+     * changed and there must not be a user-visible impact on camera performance.
+     *
+     * @param configs a vector of camera ids and their corresponding stream
+     *                configurations that need to be queried for support.
+     *
+     * @return status Status code for the operation, one of:
+     *     OK:
+     *          On successful stream combination query.
+     *     METHOD_NOT_SUPPORTED:
+     *          The camera provider does not support stream combination query.
+     *     INTERNAL_ERROR:
+     *          The stream combination query cannot complete due to internal
+     *          error.
+     * @return true in case the stream combination is supported, false otherwise.
+     *
+     *
+     */
+    isConcurrentStreamCombinationSupported(vec<CameraIdAndStreamCombination> configs)
+        generates (Status status, bool queryStatus);
+};
diff --git a/camera/provider/2.6/ICameraProviderCallback.hal b/camera/provider/2.6/ICameraProviderCallback.hal
new file mode 100644
index 0000000..42c1092
--- /dev/null
+++ b/camera/provider/2.6/ICameraProviderCallback.hal
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.camera.provider@2.6;
+
+import android.hardware.camera.common@1.0::types;
+import android.hardware.camera.provider@2.4::ICameraProviderCallback;
+
+/**
+ * Callback functions for a camera provider HAL to use to inform the camera
+ * service of changes to the camera subsystem.
+ *
+ * Version 2.6 adds support for physical camera device status callback for
+ * multi-camera.
+ */
+interface ICameraProviderCallback extends @2.4::ICameraProviderCallback {
+
+    /**
+     * cameraPhysicalDeviceStatusChange:
+     *
+     * Callback to the camera service to indicate that the state of a physical
+     * camera device of a logical multi-camera has changed.
+     *
+     * On camera service startup, when ICameraProvider::setCallback is invoked,
+     * the camera service must assume that all physical devices backing internal
+     * multi-camera devices are in the CAMERA_DEVICE_STATUS_PRESENT state.
+     *
+     * The provider must call this method to inform the camera service of any
+     * initially NOT_PRESENT physical devices, as soon as the callbacks are available
+     * through setCallback.
+     *
+     * @param cameraDeviceName The name of the logical multi-camera whose
+     *     physical camera has a new status.
+     * @param physicalCameraDeviceName The name of the physical camera device
+     *     that has a new status.
+     * @param newStatus The new status that device is in.
+     *
+     */
+    physicalCameraDeviceStatusChange(string cameraDeviceName,
+            string physicalCameraDeviceName, CameraDeviceStatus newStatus);
+};
diff --git a/camera/provider/2.6/types.hal b/camera/provider/2.6/types.hal
new file mode 100644
index 0000000..24c62aa
--- /dev/null
+++ b/camera/provider/2.6/types.hal
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.camera.provider@2.6;
+
+import android.hardware.camera.device@3.4::StreamConfiguration;
+
+/**
+ * CameraIdAndStreamCombination:
+ * Pairs the cameraId and the StreamConfiguration to be
+ * tested with other concurrent camera id and StreamConfigurations
+ */
+struct CameraIdAndStreamCombination {
+    string cameraId;
+
+    @3.4::StreamConfiguration streamConfiguration;
+};
diff --git a/cas/1.0/vts/functional/Android.bp b/cas/1.0/vts/functional/Android.bp
index 622baa5..ab39c0e 100644
--- a/cas/1.0/vts/functional/Android.bp
+++ b/cas/1.0/vts/functional/Android.bp
@@ -29,6 +29,6 @@
     shared_libs: [
         "libbinder",
     ],
-    test_suites: ["general-tests"],
+    test_suites: ["general-tests", "vts-core"],
 }
 
diff --git a/cas/1.0/vts/functional/VtsHalCasV1_0TargetTest.cpp b/cas/1.0/vts/functional/VtsHalCasV1_0TargetTest.cpp
index 14b8bbd..0f16de5 100644
--- a/cas/1.0/vts/functional/VtsHalCasV1_0TargetTest.cpp
+++ b/cas/1.0/vts/functional/VtsHalCasV1_0TargetTest.cpp
@@ -16,8 +16,6 @@
 
 #define LOG_TAG "mediacas_hidl_hal_test"
 
-#include <VtsHalHidlTargetTestBase.h>
-#include <VtsHalHidlTargetTestEnvBase.h>
 #include <android-base/logging.h>
 #include <android/hardware/cas/1.0/ICas.h>
 #include <android/hardware/cas/1.0/ICasListener.h>
@@ -27,8 +25,11 @@
 #include <android/hardware/cas/native/1.0/IDescrambler.h>
 #include <android/hardware/cas/native/1.0/types.h>
 #include <binder/MemoryDealer.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
 #include <hidl/HidlSupport.h>
 #include <hidl/HidlTransportSupport.h>
+#include <hidl/ServiceManagement.h>
 #include <hidl/Status.h>
 #include <hidlmemory/FrameworkUtils.h>
 #include <utils/Condition.h>
@@ -208,29 +209,16 @@
     EXPECT_TRUE(mEventData == eventData);
 }
 
-// Test environment for Cas HIDL HAL.
-class CasHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
-   public:
-    // get the test environment singleton
-    static CasHidlEnvironment* Instance() {
-        static CasHidlEnvironment* instance = new CasHidlEnvironment;
-        return instance;
-    }
-
-    virtual void registerTestServices() override { registerTestService<IMediaCasService>(); }
-};
-
-class MediaCasHidlTest : public ::testing::VtsHalHidlTargetTestBase {
-   public:
+class MediaCasHidlTest : public testing::TestWithParam<std::string> {
+  public:
     virtual void SetUp() override {
-        mService = ::testing::VtsHalHidlTargetTestBase::getService<IMediaCasService>(
-            CasHidlEnvironment::Instance()->getServiceName<IMediaCasService>());
+        mService = IMediaCasService::getService(GetParam());
         ASSERT_NE(mService, nullptr);
     }
 
-    sp<IMediaCasService> mService;
+    sp<IMediaCasService> mService = nullptr;
 
-   protected:
+  protected:
     static void description(const std::string& description) {
         RecordProperty("description", description);
     }
@@ -325,7 +313,7 @@
         return ::testing::AssertionFailure();
     }
 
-    uint8_t* ipBuffer = static_cast<uint8_t*>(static_cast<void*>(mem->pointer()));
+    uint8_t* ipBuffer = static_cast<uint8_t*>(static_cast<void*>(mem->unsecurePointer()));
     memcpy(ipBuffer, kInBinaryBuffer, sizeof(kInBinaryBuffer));
 
     // hidlMemory is not to be passed out of scope!
@@ -419,7 +407,7 @@
     return ::testing::AssertionResult(returnVoid.isOk());
 }
 
-TEST_F(MediaCasHidlTest, EnumeratePlugins) {
+TEST_P(MediaCasHidlTest, EnumeratePlugins) {
     description("Test enumerate plugins");
     hidl_vec<HidlCasPluginDescriptor> descriptors;
     EXPECT_TRUE(mService
@@ -440,7 +428,7 @@
     }
 }
 
-TEST_F(MediaCasHidlTest, TestInvalidSystemIdFails) {
+TEST_P(MediaCasHidlTest, TestInvalidSystemIdFails) {
     description("Test failure for invalid system ID");
     sp<MediaCasListener> casListener = new MediaCasListener();
 
@@ -458,7 +446,7 @@
     EXPECT_EQ(descramblerBase, nullptr);
 }
 
-TEST_F(MediaCasHidlTest, TestClearKeyPluginInstalled) {
+TEST_P(MediaCasHidlTest, TestClearKeyPluginInstalled) {
     description("Test if ClearKey plugin is installed");
     hidl_vec<HidlCasPluginDescriptor> descriptors;
     EXPECT_TRUE(mService
@@ -480,7 +468,7 @@
     ASSERT_TRUE(false) << "ClearKey plugin not installed";
 }
 
-TEST_F(MediaCasHidlTest, TestClearKeyApis) {
+TEST_P(MediaCasHidlTest, TestClearKeyApis) {
     description("Test that valid call sequences succeed");
 
     ASSERT_TRUE(createCasPlugin(CLEAR_KEY_SYSTEM_ID));
@@ -568,7 +556,7 @@
     EXPECT_EQ(Status::OK, descrambleStatus);
 
     ASSERT_NE(nullptr, dataMemory.get());
-    uint8_t* opBuffer = static_cast<uint8_t*>(static_cast<void*>(dataMemory->pointer()));
+    uint8_t* opBuffer = static_cast<uint8_t*>(static_cast<void*>(dataMemory->unsecurePointer()));
 
     int compareResult =
         memcmp(static_cast<const void*>(opBuffer), static_cast<const void*>(kOutRefBinaryBuffer),
@@ -584,7 +572,7 @@
     EXPECT_EQ(Status::OK, returnStatus);
 }
 
-TEST_F(MediaCasHidlTest, TestClearKeySessionClosedAfterRelease) {
+TEST_P(MediaCasHidlTest, TestClearKeySessionClosedAfterRelease) {
     description("Test that all sessions are closed after a MediaCas object is released");
 
     ASSERT_TRUE(createCasPlugin(CLEAR_KEY_SYSTEM_ID));
@@ -611,7 +599,7 @@
     EXPECT_EQ(Status::ERROR_CAS_SESSION_NOT_OPENED, returnStatus);
 }
 
-TEST_F(MediaCasHidlTest, TestClearKeyErrors) {
+TEST_P(MediaCasHidlTest, TestClearKeyErrors) {
     description("Test that invalid call sequences fail with expected error codes");
 
     ASSERT_TRUE(createCasPlugin(CLEAR_KEY_SYSTEM_ID));
@@ -700,7 +688,7 @@
     EXPECT_FALSE(mDescramblerBase->requiresSecureDecoderComponent("bad"));
 }
 
-TEST_F(MediaCasHidlTest, TestClearKeyOobFails) {
+TEST_P(MediaCasHidlTest, TestClearKeyOobFails) {
     description("Test that oob descramble request fails with expected error");
 
     ASSERT_TRUE(createCasPlugin(CLEAR_KEY_SYSTEM_ID));
@@ -849,11 +837,7 @@
 
 }  // anonymous namespace
 
-int main(int argc, char** argv) {
-    ::testing::AddGlobalTestEnvironment(CasHidlEnvironment::Instance());
-    ::testing::InitGoogleTest(&argc, argv);
-    CasHidlEnvironment::Instance()->init(&argc, argv);
-    int status = RUN_ALL_TESTS();
-    LOG(INFO) << "Test result = " << status;
-    return status;
-}
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, MediaCasHidlTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IMediaCasService::descriptor)),
+        android::hardware::PrintInstanceNameToString);
\ No newline at end of file
diff --git a/cas/1.1/vts/functional/Android.bp b/cas/1.1/vts/functional/Android.bp
index 8afd19a..9e8eb52 100644
--- a/cas/1.1/vts/functional/Android.bp
+++ b/cas/1.1/vts/functional/Android.bp
@@ -30,6 +30,6 @@
     shared_libs: [
         "libbinder",
     ],
-    test_suites: ["general-tests"],
+    test_suites: ["general-tests", "vts-core"],
 }
 
diff --git a/cas/1.1/vts/functional/VtsHalCasV1_1TargetTest.cpp b/cas/1.1/vts/functional/VtsHalCasV1_1TargetTest.cpp
index 88f1fb0..7e5a61a 100644
--- a/cas/1.1/vts/functional/VtsHalCasV1_1TargetTest.cpp
+++ b/cas/1.1/vts/functional/VtsHalCasV1_1TargetTest.cpp
@@ -27,8 +27,11 @@
 #include <android/hardware/cas/native/1.0/IDescrambler.h>
 #include <android/hardware/cas/native/1.0/types.h>
 #include <binder/MemoryDealer.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
 #include <hidl/HidlSupport.h>
 #include <hidl/HidlTransportSupport.h>
+#include <hidl/ServiceManagement.h>
 #include <hidl/Status.h>
 #include <hidlmemory/FrameworkUtils.h>
 #include <utils/Condition.h>
@@ -251,27 +254,14 @@
     EXPECT_TRUE(mEventData == eventData);
 }
 
-// Test environment for Cas HIDL HAL.
-class CasHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
-  public:
-    // get the test environment singleton
-    static CasHidlEnvironment* Instance() {
-        static CasHidlEnvironment* instance = new CasHidlEnvironment;
-        return instance;
-    }
-
-    virtual void registerTestServices() override { registerTestService<IMediaCasService>(); }
-};
-
-class MediaCasHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+class MediaCasHidlTest : public testing::TestWithParam<std::string> {
   public:
     virtual void SetUp() override {
-        mService = ::testing::VtsHalHidlTargetTestBase::getService<IMediaCasService>(
-                CasHidlEnvironment::Instance()->getServiceName<IMediaCasService>());
+        mService = IMediaCasService::getService(GetParam());
         ASSERT_NE(mService, nullptr);
     }
 
-    sp<IMediaCasService> mService;
+    sp<IMediaCasService> mService = nullptr;
 
   protected:
     static void description(const std::string& description) {
@@ -366,7 +356,7 @@
         return ::testing::AssertionFailure();
     }
 
-    uint8_t* ipBuffer = static_cast<uint8_t*>(static_cast<void*>(mem->pointer()));
+    uint8_t* ipBuffer = static_cast<uint8_t*>(static_cast<void*>(mem->unsecurePointer()));
     memcpy(ipBuffer, kInBinaryBuffer, sizeof(kInBinaryBuffer));
 
     // hidlMemory is not to be passed out of scope!
@@ -453,7 +443,7 @@
     return ::testing::AssertionResult(returnVoid.isOk());
 }
 
-TEST_F(MediaCasHidlTest, TestClearKeyApisWithSession) {
+TEST_P(MediaCasHidlTest, TestClearKeyApisWithSession) {
     description("Test that valid call sequences with SessionEvent send and receive");
 
     ASSERT_TRUE(createCasPlugin(CLEAR_KEY_SYSTEM_ID));
@@ -543,7 +533,7 @@
     EXPECT_EQ(Status::OK, descrambleStatus);
 
     ASSERT_NE(nullptr, dataMemory.get());
-    uint8_t* opBuffer = static_cast<uint8_t*>(static_cast<void*>(dataMemory->pointer()));
+    uint8_t* opBuffer = static_cast<uint8_t*>(static_cast<void*>(dataMemory->unsecurePointer()));
 
     int compareResult =
             memcmp(static_cast<const void*>(opBuffer),
@@ -561,11 +551,7 @@
 
 }  // anonymous namespace
 
-int main(int argc, char** argv) {
-    ::testing::AddGlobalTestEnvironment(CasHidlEnvironment::Instance());
-    ::testing::InitGoogleTest(&argc, argv);
-    CasHidlEnvironment::Instance()->init(&argc, argv);
-    int status = RUN_ALL_TESTS();
-    LOG(INFO) << "Test result = " << status;
-    return status;
-}
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, MediaCasHidlTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IMediaCasService::descriptor)),
+        android::hardware::PrintInstanceNameToString);
diff --git a/cas/1.2/types.hal b/cas/1.2/types.hal
index 40c06cf..06199cd 100644
--- a/cas/1.2/types.hal
+++ b/cas/1.2/types.hal
@@ -45,6 +45,10 @@
      *  ERROR_CAS_BLACKOUT is used to report geographical blackout.
      */
     ERROR_CAS_BLACKOUT,
+    /**
+     * ERROR_CAS_REBOOTING is used to report CAS is during rebooting.
+     */
+    ERROR_CAS_REBOOTING,
 };
 
 /**
diff --git a/common/aidl/Android.bp b/common/aidl/Android.bp
new file mode 100644
index 0000000..f55e799
--- /dev/null
+++ b/common/aidl/Android.bp
@@ -0,0 +1,21 @@
+aidl_interface {
+    name: "android.hardware.common",
+    host_supported: true,
+    vendor_available: true,
+    vndk: {
+        enabled: true,
+        support_system_process: true,
+    },
+    srcs: [
+        "android/hardware/common/*.aidl",
+    ],
+    stability: "vintf",
+    backend: {
+        java: {
+            enabled: false,
+        },
+        cpp: {
+            enabled: false,
+        },
+    },
+}
diff --git a/common/aidl/android/hardware/common/NativeHandle.aidl b/common/aidl/android/hardware/common/NativeHandle.aidl
new file mode 100644
index 0000000..2c250a2
--- /dev/null
+++ b/common/aidl/android/hardware/common/NativeHandle.aidl
@@ -0,0 +1,26 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.common;
+
+/**
+ * Representation of a native handle.
+ */
+@VintfStability
+parcelable NativeHandle {
+    ParcelFileDescriptor[] fds;
+    int[] ints;
+}
diff --git a/compatibility_matrices/compatibility_matrix.current.xml b/compatibility_matrices/compatibility_matrix.current.xml
index 395848c..9a8f336 100644
--- a/compatibility_matrices/compatibility_matrix.current.xml
+++ b/compatibility_matrices/compatibility_matrix.current.xml
@@ -45,6 +45,14 @@
         <interface>
             <name>IEvsEnumerator</name>
             <instance>default</instance>
+            <regex-instance>[a-z]+/[0-9]+</regex-instance>
+        </interface>
+    </hal>
+    <hal format="aidl" optional="true">
+        <name>android.hardware.automotive.occupant_awareness</name>
+        <interface>
+            <name>IOccupantAwareness</name>
+            <instance>default</instance>
         </interface>
     </hal>
     <hal format="hidl" optional="true">
@@ -57,7 +65,7 @@
     </hal>
     <hal format="hidl" optional="true">
         <name>android.hardware.biometrics.face</name>
-        <version>1.0</version>
+        <version>1.0-1</version>
         <interface>
             <name>IBiometricsFace</name>
             <instance>default</instance>
@@ -113,7 +121,7 @@
     </hal>
     <hal format="hidl" optional="true">
         <name>android.hardware.camera.provider</name>
-        <version>2.4-5</version>
+        <version>2.4-6</version>
         <interface>
             <name>ICameraProvider</name>
             <regex-instance>[^/]+/[0-9]+</regex-instance>
@@ -121,7 +129,7 @@
     </hal>
     <hal format="hidl" optional="true">
         <name>android.hardware.cas</name>
-        <version>1.1</version>
+        <version>1.1-2</version>
         <interface>
             <name>IMediaCasService</name>
             <instance>default</instance>
@@ -153,7 +161,7 @@
     </hal>
     <hal format="hidl" optional="true">
         <name>android.hardware.drm</name>
-        <version>1.0-2</version>
+        <version>1.0-3</version>
         <interface>
             <name>ICryptoFactory</name>
             <regex-instance>.*</regex-instance>
@@ -165,7 +173,7 @@
     </hal>
     <hal format="hidl" optional="true">
         <name>android.hardware.dumpstate</name>
-        <version>1.0</version>
+        <version>1.1</version>
         <interface>
             <name>IDumpstateDevice</name>
             <instance>default</instance>
@@ -187,7 +195,7 @@
          - test DeviceManifestTest#GnssHalVersionCompatibility.
         -->
         <version>1.1</version>
-        <version>2.0</version>
+        <version>2.0-1</version>
         <interface>
             <name>IGnss</name>
             <instance>default</instance>
@@ -195,8 +203,10 @@
     </hal>
     <hal format="hidl" optional="false">
         <name>android.hardware.graphics.allocator</name>
+        <!-- TODO(b/136016160): deprecating 2.0. New devices should not use this -->
         <version>2.0</version>
         <version>3.0</version>
+        <version>4.0</version>
         <interface>
             <name>IAllocator</name>
             <instance>default</instance>
@@ -204,7 +214,7 @@
     </hal>
     <hal format="hidl" optional="false">
         <name>android.hardware.graphics.composer</name>
-        <version>2.1-3</version>
+        <version>2.1-4</version>
         <interface>
             <name>IComposer</name>
             <instance>default</instance>
@@ -212,8 +222,10 @@
     </hal>
     <hal format="hidl" optional="false">
         <name>android.hardware.graphics.mapper</name>
+        <!-- TODO(b/136016160): deprecating 2.1. New devices should not use this -->
         <version>2.1</version>
         <version>3.0</version>
+        <version>4.0</version>
         <interface>
             <name>IMapper</name>
             <instance>default</instance>
@@ -276,9 +288,16 @@
             <instance>default</instance>
         </interface>
     </hal>
+    <hal format="aidl" optional="true">
+        <name>android.hardware.light</name>
+        <interface>
+            <name>ILights</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
     <hal format="hidl" optional="true">
         <name>android.hardware.media.c2</name>
-        <version>1.0</version>
+        <version>1.0-1</version>
         <interface>
             <name>IComponentStore</name>
             <regex-instance>default[0-9]*</regex-instance>
@@ -378,6 +397,13 @@
             <instance>default</instance>
         </interface>
     </hal>
+    <hal format="aidl" optional="true">
+        <name>android.hardware.rebootescrow</name>
+        <interface>
+            <name>IRebootEscrow</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
     <hal format="hidl" optional="true">
         <name>android.hardware.secure_element</name>
         <version>1.0-2</version>
@@ -398,7 +424,7 @@
     </hal>
     <hal format="hidl" optional="true">
         <name>android.hardware.soundtrigger</name>
-        <version>2.0-2</version>
+        <version>2.0-3</version>
         <interface>
             <name>ISoundTriggerHw</name>
             <instance>default</instance>
@@ -455,7 +481,7 @@
     </hal>
     <hal format="hidl" optional="true">
         <name>android.hardware.usb.gadget</name>
-        <version>1.0</version>
+        <version>1.0-1</version>
         <interface>
             <name>IUsbGadget</name>
             <instance>default</instance>
@@ -486,7 +512,7 @@
     </hal>
     <hal format="hidl" optional="true">
         <name>android.hardware.wifi</name>
-        <version>1.0-3</version>
+        <version>1.0-4</version>
         <interface>
             <name>IWifi</name>
             <instance>default</instance>
@@ -494,7 +520,7 @@
     </hal>
     <hal format="hidl" optional="true">
         <name>android.hardware.wifi.hostapd</name>
-        <version>1.0-1</version>
+        <version>1.0-2</version>
         <interface>
             <name>IHostapd</name>
             <instance>default</instance>
@@ -502,7 +528,7 @@
     </hal>
     <hal format="hidl" optional="true">
         <name>android.hardware.wifi.supplicant</name>
-        <version>1.0-2</version>
+        <version>1.0-3</version>
         <interface>
             <name>ISupplicant</name>
             <instance>default</instance>
diff --git a/current.txt b/current.txt
index 879bdb0..74c0cbb 100644
--- a/current.txt
+++ b/current.txt
@@ -451,9 +451,9 @@
 443659bb9e27221e5da0d16c7a0ecb2dc3a9a03acc8a0b2196b47c50735e2d2e android.hardware.audio.effect@5.0::IVirtualizerEffect
 78fed26a781cdca1b3bcb37520bff705d7764ee81db9cfd37014953c7ad2596e android.hardware.audio.effect@5.0::IVisualizerEffect
 6385b6accab8a544e2ee54ba7bf5aa55dff6153bcedd80fdaae16fe9e0be7050 android.hardware.audio.effect@5.0::types
+95aa2f59e29e2f84d8e84320ace9b6682b426a16e897b4bd241375cbee0e07f3 android.hardware.biometrics.face@1.0::types
 e18ff318f3fc43db37f554696dc4e551abb9b119bde53950f73e28ce33a97a40 android.hardware.biometrics.face@1.0::IBiometricsFace
 b6e55d7795bbafd011fb95a3b6d3954bf66c349e14cf107f3b72032ce3ceb448 android.hardware.biometrics.face@1.0::IBiometricsFaceClientCallback
-95aa2f59e29e2f84d8e84320ace9b6682b426a16e897b4bd241375cbee0e07f3 android.hardware.biometrics.face@1.0::types
 ecedc58dbcdb13503c19c0ab160ac1dd0530bb1471164149282dd1463c684185 android.hardware.bluetooth.audio@2.0::IBluetoothAudioPort
 fb9c40e4deab40be5476477078fe3d8a4a4495fd9deef4321878d169d675c633 android.hardware.bluetooth.audio@2.0::IBluetoothAudioProvider
 f7431f3e3e4e3387fc6f27a6cf423eddcd824a395dc4349d302c995ab44a9895 android.hardware.bluetooth.audio@2.0::IBluetoothAudioProvidersFactory
@@ -578,6 +578,18 @@
 cfa81f229b69f9011c58f48264fcb552447430fe68610eac514e811e65bc306a android.hardware.wifi.supplicant@1.2::types
 
 # ABI preserving changes to HALs during Android R
+c3ec182ce325862b7d79e526f3e170c02cfee1497ed309d7c60d0de4ca636b0b android.hardware.automotive.audiocontrol@1.0::IAudioControl
+1b6d0927615ddbf4c56a993fa1845bca15543e315fb6f48c77276e2fa2918ac5 android.hardware.automotive.evs@1.0::IEvsCamera
+3901859d36b7b4d32910d61cd1e8982b0ffeb8fb77b457ac6349e8bf1abcd595 android.hardware.automotive.evs@1.0::IEvsCameraStream
+578f640c653726d58f99c84a7e1bb63862e21ef7cbb4f7d95c3cc62de00dca35 android.hardware.automotive.evs@1.0::IEvsDisplay
+f5bc6aa840db933cb9fd36668b06d3e2021cf5384bb70e459f22e2f2f921fba5 android.hardware.automotive.evs@1.0::IEvsEnumerator
+d3a344b7bd4c0d2658ae7209f55a979b8f53f361fd00f4fca29d5baa56d11fd2 android.hardware.automotive.evs@1.0::types
+2410dd02d67786a732d36e80b0f8ccf55086604ef37f9838e2013ff2c571e404 android.hardware.camera.device@3.5::types
+cd06a7911b9acd4a653bbf7133888878fbcb3f84be177c7a3f1becaae3d8618f android.hardware.camera.metadata@3.2::types
+a05277065c28ebecd58118bd240fb8c55757361e8648c01f7c4dacdb7f2a95dc android.hardware.camera.metadata@3.3::types
+9cb3df2bde2c6cd5fd96b7c41555420cacd7e276a556c684af91b7461c86460f android.hardware.gnss@1.0::IGnssCallback
+bceee81ec1b59324abd05932b5620fda5a6589597c9cb3953ba7f3ea02cccd3e android.hardware.camera.provider@2.4::ICameraProvider
+2ce820dc4f3c6d85721b65150ed2157c6e2e2055f866fb6c6ba4790f14408d66 android.hardware.camera.provider@2.4::ICameraProviderCallback
 b69a7615c508acf5c5201efd1bfa3262167874fc3594e2db5a3ff93addd8ac75 android.hardware.keymaster@4.0::IKeymasterDevice
 eb2fa0c883c2185d514be0b84c179b283753ef0c1b77b45b4f359bd23bba8b75 android.hardware.neuralnetworks@1.0::IPreparedModel
 8eac60e1f724d141c71c69f06d4544acb720a55dfbbcd97fa01bb3d25ee4e2f5 android.hardware.neuralnetworks@1.0::types
@@ -591,14 +603,14 @@
 
 # HALs released in Android R
 e966a3437d6a98d9d9e14e9d672088771716031900c0deb55a0946c751a03a44 android.hardware.audio@6.0::types
-4540d12fe1cea996f21bd1712d4ae0906dcbd58177dac494efc605b004902d43 android.hardware.audio@6.0::IDevice
+dd3e9280be60a5e042331c1046d13938e2cc323dc4b267cc74d544bf62fc0314 android.hardware.audio@6.0::IDevice
 2402876cbc23c0de3690a665eca84fd3857d1808dba5cad25ce272f81ecef8c9 android.hardware.audio@6.0::IDevicesFactory
 bca5379d5065e2e08b6ad7308ffc8a71a972fc0698bec678ea32eea786d01cb5 android.hardware.audio@6.0::IPrimaryDevice
-7318b521ea12fdd4b6e3f381085c71784c810d1ec7a8d701ec2250f3f86712e4 android.hardware.audio@6.0::IStream
+fd1f1b29f26b42e886220f04a08086c00e5ade9d7b53f095438e578ab9d42a93 android.hardware.audio@6.0::IStream
 2df5d5866b37776f25079c0e54b54350a2abe4e025a59c9e02a7d3abe8ca00e8 android.hardware.audio@6.0::IStreamIn
 78e4138cc8307c11fc777c3bd376e581ba4ba48196b05ca1d7cdfa515c87b48a android.hardware.audio@6.0::IStreamOut
 997fdaad7a9d17ee7e01feb7031a753e2365e72ad30b11d950e9183fabdf3844 android.hardware.audio@6.0::IStreamOutCallback
-b495a43bd6ff0c34a391824b0ba1a3f3f34b4a869690611a9a0afc404d75aa84 android.hardware.audio.common@6.0::types
+43a3303378f5b9852c2da9ac2c1d440965aab7ba02a800229e7b3c84e2167e06 android.hardware.audio.common@6.0::types
 817930d58412d662cb45e641c50cb62c727e4a3e3ffe7029a53cad9677b97d58 android.hardware.audio.effect@6.0::types
 525bec6b44f1103869c269a128d51b8dccd73af5340ba863c8886c68357c7faf android.hardware.audio.effect@6.0::IAcousticEchoCancelerEffect
 8d76bbe3719d051a8e9a1dcf9244f37f5b0a491feb249fa48391edf7cb4f3131 android.hardware.audio.effect@6.0::IAutomaticGainControlEffect
@@ -614,10 +626,30 @@
 5237c42d3913ef569f07bec802568084b615155d05a7951e75085da54856508c android.hardware.audio.effect@6.0::IPresetReverbEffect
 282193799d60bff27a84c65a36218c1e7d8f582f5828e2e059383d1b90aa56bd android.hardware.audio.effect@6.0::IVirtualizerEffect
 0868e00f7c5ee16723bda1a8f57099763d04100ae7126a1c2d3a9a87c844a7e8 android.hardware.audio.effect@6.0::IVisualizerEffect
+7e8e1c3d0173c5d503dd01cecff8e3864478557ca6b9e8cc2291598b1a4aea62 android.hardware.biometrics.face@1.1::IBiometricsFace
+ae6315fd42196478ac08441cb489d854118001bca5b9b9fd58af5110952be30e android.hardware.biometrics.fingerprint@2.2::types
+6828bbf18dc5d0f00c73341a10c8e4d574346c1abb1c2ed682ba5e9f8a3240d9 android.hardware.biometrics.fingerprint@2.2::IBiometricsFingerprint
+82cad99f5feb2ea9bcd4579055edf4af8feb9fc602a6e4827ddd727d254d4991 android.hardware.biometrics.fingerprint@2.2::IBiometricsFingerprintClientCallback
 79e115c8f8970b8b914bafc66df5425e065fda4dcda97222966ef12451d2a1cc android.hardware.bluetooth@1.1::IBluetoothHci
 40ab2c6866c18d32baf6e49e3053949e79601f56963a791e93e68b9ee18f718d android.hardware.bluetooth@1.1::IBluetoothHciCallbacks
 07d0a252b2d8fa35887908a996ba395cf392968395fc30afab791f46e0c22a52 android.hardware.boot@1.1::IBootControl
 74049a402be913963edfdd80828a53736570e9d8124a1bf18166b6ed46a6b0ab android.hardware.boot@1.1::types
+c1aa508d00b66ed5feefea398fd5edf28fa651ac89773adad7dfda4e0a73a952 android.hardware.cas@1.2::ICas
+9811f867def49b420d8c707f7e38d3bdd64f835244e1d2a5e9762ab9835672dc android.hardware.cas@1.2::ICasListener
+f18695dd36ee205640b8326a17453858a7b4596653aaa6ef0016b0aef1bd4dac android.hardware.cas@1.2::IMediaCasService
+4d85e814f94949dae4dc6cb82bbd7d6bb24ffafda6ddb2eac928d2a4fc2e21ce android.hardware.cas@1.2::types
+66931c2506fbb5af61f20138cb05e0a09e7bf67d6964c231d27c648933bb33ec android.hardware.drm@1.3::ICryptoFactory
+994d08ab27d613022c258a9ec48cece7adf2a305e92df5d76ef923e2c6665f64 android.hardware.drm@1.3::IDrmFactory
+881aa8720fb1d69aa9843bfab69d810ab7654a61d2f5ab5e2626cbf240f24eaf android.hardware.dumpstate@1.1::types
+13b33f623521ded51a6c0f7ea5b77e97066d0aa1e38a83c2873f08ad67294f89 android.hardware.dumpstate@1.1::IDumpstateDevice
+769d346927a94fd40ee80a5a976d8d15cf022ef99c5900738f4a82f26c0ed229 android.hardware.gnss@2.1::types
+88371e0edf69a1f72bfc45ecb2335e9b145e87339d3eecc92664a1fb200213ba android.hardware.gnss@2.1::IGnss
+ba62e1e8993bfb9f27fa04816fa0f2241ae2d01edfa3d0c04182e2e5de80045c android.hardware.gnss@2.1::IGnssCallback
+ccdf3c0fb2c02a6d4dc57afb276c3497ae8172b80b00ebc0bf8a0238dd38b01d android.hardware.gnss@2.1::IGnssConfiguration
+5a125c49ca83629e22afc8c39e865509343bfa2c38f0baea9a186bbac103492d android.hardware.gnss@2.1::IGnssMeasurement
+d7bf37660a0946de9599dcbae997b077ee3e604fc2044534d40d3da04297a5d3 android.hardware.gnss@2.1::IGnssMeasurementCallback
+6670e7780803a8c696c6391fda5589a334b1b37dc7be9393792ed35035413633 android.hardware.gnss.measurement_corrections@1.1::IMeasurementCorrections
+a3f439b782a6a92aaf3c0250f3526e94e8bf8844c3d578f0815e21b12c431346 android.hardware.gnss.measurement_corrections@1.1::types
 ce8dbe76eb9ee94b46ef98f725be992e760a5751073d4f4912484026541371f3 android.hardware.health@2.1::IHealth
 26f04510a0b57aba5167c5c0a7c2f077c2acbb98b81902a072517829fd9fd67f android.hardware.health@2.1::IHealthInfoCallback
 db47f4ceceb1f06c656f39caa70c557b0f8471ef59fd58611bea667ffca20101 android.hardware.health@2.1::types
@@ -627,20 +659,24 @@
 6e1e28a96c90ba78d47257faea3f3bb4e6360affbbfa5822f0dc31211f9266ff android.hardware.identity@1.0::IWritableIdentityCredential
 27ae3724053940462114228872b3ffaf0b8e6177d5ba97f5a76339d12b8a99dd android.hardware.keymaster@4.1::IKeymasterDevice
 adb0efdf1462e9b2e742c0dcadd598666aac551f178be06e755bfcdf5797abd0 android.hardware.keymaster@4.1::IOperation
-ac429fca0da4ce91218768ec31b64ded88251f8a26d8c4f27c06abdc5b1926d9 android.hardware.keymaster@4.1::types
+ddcf89cd8ee2df0d32aee55050826446fb64f7aafde0a7cd946c64f61b1a364c android.hardware.keymaster@4.1::types
+df9c79c4fdde2821550c6d5c3d07f5ec0adfb1b702561ce543c906ddef698703 android.hardware.media.c2@1.1::IComponent
+a3eddd9bbdc87e8c22764070037dd1154f1cf006e6fba93364c4f85d4c134a19 android.hardware.media.c2@1.1::IComponentStore
 65c16331e57f6dd68b3971f06f78fe9e3209afb60630c31705aa355f9a52bf0d android.hardware.neuralnetworks@1.3::IBuffer
 d1f382d14e1384b907d5bb5780df7f01934650d556fedbed2f15a90773c657d6 android.hardware.neuralnetworks@1.3::IDevice
 4167dc3ad35e9cd0d2057d4868c7675ae2c3c9d05bbd614c1f5dccfa5fd68797 android.hardware.neuralnetworks@1.3::IExecutionCallback
-29e26e83399b69c7998b787bd30426dd5baa2da350effca76bbee1ba877355c9 android.hardware.neuralnetworks@1.3::IFencedExecutionCallback
-384fd9fd6e4d43ea11d407e52ea81da5242c3c5f4b458b8707d8feb652a13e36 android.hardware.neuralnetworks@1.3::IPreparedModel
+2fa3679ad7c94b5e88724adcd560c561041068a4ca565c63830e68101988746a android.hardware.neuralnetworks@1.3::IFencedExecutionCallback
+237b23b126a66f3432658020fed78cdd06ba6297459436fe6bae0ba753370833 android.hardware.neuralnetworks@1.3::IPreparedModel
 0439a1fbbec7f16e5e4c653d85ac685d51bfafbae15b8f8cca530acdd7d6a8ce android.hardware.neuralnetworks@1.3::IPreparedModelCallback
-5f1a4e0c29fc686ed476f9f04eed35e4405d21288cb2746b978d6891de5cc37d android.hardware.neuralnetworks@1.3::types
+3646950b10f7cacdafca13609b0e18496cea942f3bdfe920494661856eff48bb android.hardware.neuralnetworks@1.3::types
 3e01d4446cd69fd1c48f8572efd97487bc179564b32bd795800b97bbe10be37b android.hardware.wifi@1.4::IWifi
+c67aaf26a7a40d14ea61e70e20afacbd0bb906df1704d585ac8599fbb69dd44b android.hardware.wifi.hostapd@1.2::IHostapd
+11f6448d15336361180391c8ebcdfd2d7cf77b3782d577e594d583aadc9c2877 android.hardware.wifi.hostapd@1.2::types
 a64467bae843569f0d465c5be7f0c7a5b987985b55a3ef4794dd5afc68538650 android.hardware.wifi.supplicant@1.3::ISupplicant
-44445b8a03d7b9e68b2fbd954672c18a8fce9e32851b0692f4f4ab3407f86ecb android.hardware.wifi.supplicant@1.3::ISupplicantStaIface
-619fc9839ec6e369cfa9b28e3e9412e6885720ff8f9b5750c1b6ffb905120391 android.hardware.wifi.supplicant@1.3::ISupplicantStaIfaceCallback
-c9273429fcf98d797d3bb07fdba6f1be95bf960f9255cde169fd1ca4db85f856 android.hardware.wifi.supplicant@1.3::ISupplicantStaNetwork
-9b0a3ab6f4f74b971ed094426d8a443e29b512ff03e1ab50c07156396cdb2483 android.hardware.wifi.supplicant@1.3::types
+8aed0a8e03e7a67bfdfb78ad7529a9ae95bea36e6060473b204c89d772522126 android.hardware.wifi.supplicant@1.3::ISupplicantStaIface
+def77c7db95d374f11a111bfc4ed60f92451303642a43276c4e291988fcee625 android.hardware.wifi.supplicant@1.3::ISupplicantStaIfaceCallback
+62cf050c593c1ec34b49178b5bdde72dd9b80d9bad3eb184e4f0cd564d28678c android.hardware.wifi.supplicant@1.3::ISupplicantStaNetwork
+98592d193a717066facf91428426e5abe211e3bd718bc372e29fb944ddbe6e7c android.hardware.wifi.supplicant@1.3::types
 50e22cd55ad5499e68e81541bbc67bd10e59c1b9f3ff8cc7ba70dcb0d2918381 android.hardware.radio@1.5::types
 8cc3306e8cd755d04521d1611b217b9d13a2a76d2af57cbea8f875333b3363f7 android.hardware.radio@1.5::IRadio
 e96ae1c3a9c0689002ec2318e9c587f4f607c16a75a3cd38788b77eb91072021 android.hardware.radio@1.5::IRadioIndication
@@ -648,4 +684,7 @@
 2fd107f3de1b7e36825e241a88dfae8edf3a77c166cb746f00ddf6440ab78db1 android.hardware.radio.config@1.3::types
 a2977755bc5f1ef47f04b7f2400632efda6218e1515dba847da487145cfabc4f android.hardware.radio.config@1.3::IRadioConfig
 742360c775313438b0f82256eac62fb5bbc76a6ae6f388573f3aa142fb2c1eea android.hardware.radio.config@1.3::IRadioConfigIndication
-0006ab8e8b0910cbd3bbb08d5f17d5fac7d65a2bdad5f2334e4851db9d1e6fa8 android.hardware.radio.config@1.3::IRadioConfigResponse
\ No newline at end of file
+0006ab8e8b0910cbd3bbb08d5f17d5fac7d65a2bdad5f2334e4851db9d1e6fa8 android.hardware.radio.config@1.3::IRadioConfigResponse
+51d1c8d285e0456da2a3fdfbf4700c6277165d5e83219894d651c8ea0e39aa8b android.hardware.soundtrigger@2.3::types
+12d7533ff0754f45bf59ab300799074570a99a676545652c2c23abc73cb4515d android.hardware.soundtrigger@2.3::ISoundTriggerHw
+7746fda1fbf9c7c132bae701cc5a161309e4f5e7f3e8065811045975ee86196d android.hardware.usb.gadget@1.1::IUsbGadget
diff --git a/drm/1.3/Android.bp b/drm/1.3/Android.bp
new file mode 100644
index 0000000..b0ffcb9
--- /dev/null
+++ b/drm/1.3/Android.bp
@@ -0,0 +1,20 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.drm@1.3",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "IDrmFactory.hal",
+        "ICryptoFactory.hal",
+    ],
+    interfaces: [
+        "android.hardware.drm@1.0",
+        "android.hardware.drm@1.1",
+        "android.hardware.drm@1.2",
+        "android.hidl.base@1.0",
+    ],
+    gen_java: false,
+}
diff --git a/drm/1.3/ICryptoFactory.hal b/drm/1.3/ICryptoFactory.hal
new file mode 100644
index 0000000..d7864eb
--- /dev/null
+++ b/drm/1.3/ICryptoFactory.hal
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.hardware.drm@1.3;
+
+import @1.2::ICryptoFactory;
+
+/**
+ * ICryptoFactory is the main entry point for interacting with a vendor's
+ * crypto HAL to create crypto plugins. Crypto plugins create crypto sessions
+ * which are used by a codec to decrypt protected video content.
+ *
+ * The 1.3 factory must always create 1.2 ICryptoPlugin interfaces, which are
+ * returned via the 1.0 createPlugin method.
+ *
+ * The ICryptoFactory hal is required because all top-level interfaces
+ * have to be updated in a minor uprev.
+ */
+interface ICryptoFactory extends @1.2::ICryptoFactory {
+};
diff --git a/drm/1.3/IDrmFactory.hal b/drm/1.3/IDrmFactory.hal
new file mode 100644
index 0000000..5208028
--- /dev/null
+++ b/drm/1.3/IDrmFactory.hal
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.hardware.drm@1.3;
+
+import @1.2::IDrmFactory;
+
+/**
+ * IDrmFactory is the main entry point for interacting with a vendor's
+ * drm HAL to create drm plugin instances. A drm plugin instance
+ * creates drm sessions which are used to obtain keys for a crypto
+ * session so it can decrypt protected video content.
+ *
+ * The 1.3 factory must always create 1.2 IDrmPlugin interfaces, which are
+ * returned via the 1.0 createPlugin method.
+ */
+
+interface IDrmFactory extends @1.2::IDrmFactory {
+    /**
+     * Return vector of uuids identifying crypto schemes supported by this HAL.
+     *
+     * @return schemes Vector of uuids for which isCryptoSchemeSupported is true;
+     *                 each uuid can be used as input to createPlugin.
+     */
+    getSupportedCryptoSchemes() generates(vec<uint8_t[16]> schemes);
+};
diff --git a/drm/TEST_MAPPING b/drm/TEST_MAPPING
new file mode 100644
index 0000000..cff6819
--- /dev/null
+++ b/drm/TEST_MAPPING
@@ -0,0 +1,8 @@
+{
+  "imports": [
+    // gts and cts filters
+    {
+      "path": "frameworks/av/drm/libmediadrm"
+    }
+  ]
+}
diff --git a/dumpstate/1.0/vts/functional/VtsHalDumpstateV1_0TargetTest.cpp b/dumpstate/1.0/vts/functional/VtsHalDumpstateV1_0TargetTest.cpp
index 96b13c5..343d4c9 100644
--- a/dumpstate/1.0/vts/functional/VtsHalDumpstateV1_0TargetTest.cpp
+++ b/dumpstate/1.0/vts/functional/VtsHalDumpstateV1_0TargetTest.cpp
@@ -78,6 +78,7 @@
     ASSERT_EQ(1, read(fds[0], &buff, 1)) << "dumped nothing";
 
     native_handle_close(handle);
+    native_handle_delete(handle);
 }
 
 // Positive test: make sure dumpstateBoard() doesn't crash with two FDs.
@@ -96,6 +97,7 @@
     ASSERT_TRUE(status.isOk()) << "Status should be ok: " << status.description();
 
     native_handle_close(handle);
+    native_handle_delete(handle);
 }
 
 INSTANTIATE_TEST_SUITE_P(
diff --git a/dumpstate/1.1/Android.bp b/dumpstate/1.1/Android.bp
new file mode 100644
index 0000000..2aa8c82
--- /dev/null
+++ b/dumpstate/1.1/Android.bp
@@ -0,0 +1,18 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.dumpstate@1.1",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "types.hal",
+        "IDumpstateDevice.hal",
+    ],
+    interfaces: [
+        "android.hardware.dumpstate@1.0",
+        "android.hidl.base@1.0",
+    ],
+    gen_java: true,
+}
diff --git a/dumpstate/1.1/IDumpstateDevice.hal b/dumpstate/1.1/IDumpstateDevice.hal
new file mode 100644
index 0000000..24831b3
--- /dev/null
+++ b/dumpstate/1.1/IDumpstateDevice.hal
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.hardware.dumpstate@1.1;
+
+import @1.0::IDumpstateDevice;
+
+interface IDumpstateDevice extends @1.0::IDumpstateDevice {
+    /**
+     * Extension of dumpstateBoard which also accepts a mode parameter to limit dumped data.
+     *
+     * For an example of when this is relevant, consider a bug report being generated with
+     * DumpstateMode::CONNECTIVITY - there is no reason to include camera or USB logs in this type
+     * of report.
+     *
+     * The 1.0 version of #dumpstateBoard(handle) should just delegate to this new method and pass
+     * DumpstateMode::DEFAULT and a timeout of 30,000ms (30 seconds).
+     *
+     * @param h A native handle with one or two valid file descriptors. The first FD is for text
+     *     output, the second (if present) is for binary output.
+     * @param mode A mode value to restrict dumped content.
+     * @param timeoutMillis An approximate "budget" for how much time this call has been allotted.
+     *     If execution runs longer than this, the IDumpstateDevice service may be killed and only
+     *     partial information will be included in the report.
+     */
+    dumpstateBoard_1_1(handle h, DumpstateMode mode, uint64_t timeoutMillis);
+
+    /**
+     * Turns device vendor logging on or off.
+     *
+     * The setting should be persistent across reboots. Underlying implementations may need to start
+     * vendor logging daemons, set system properties, or change logging masks, for example. Given
+     * that many vendor logs contain significant amounts of private information and may come with
+     * memory/storage/battery impacts, calling this method on a user build should only be done after
+     * user consent has been obtained, e.g. from a toggle in developer settings.
+     *
+     * @param enable Whether to enable or disable device vendor logging.
+     * @return success Whether or not the change took effect.
+     */
+    setDeviceLoggingEnabled(bool enable) generates (bool success);
+};
diff --git a/dumpstate/1.1/types.hal b/dumpstate/1.1/types.hal
new file mode 100644
index 0000000..a6f391a
--- /dev/null
+++ b/dumpstate/1.1/types.hal
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.hardware.dumpstate@1.1;
+
+/**
+ * Constants that define the type of bug report being taken to restrict content appropriately.
+ */
+enum DumpstateMode : uint32_t {
+    /**
+     * Takes a bug report without user interference.
+     */
+    FULL = 0,
+
+    /**
+     * Interactive bug report, i.e. triggered by the user.
+     */
+    INTERACTIVE = 1,
+
+    /**
+     * Remote bug report triggered by DevicePolicyManager, for example.
+     */
+    REMOTE = 2,
+
+    /**
+     * Bug report triggered on a wear device.
+     */
+    WEAR = 3,
+
+    /**
+     * Bug report limited to only connectivity info (cellular, wifi, and networking). Sometimes
+     * called "telephony" in legacy contexts.
+     *
+     * All reported information MUST directly relate to connectivity debugging or customer support
+     * and MUST NOT contain unrelated private information. This information MUST NOT identify
+     * user-installed packages (UIDs are OK, package names are not), and MUST NOT contain logs of
+     * user application traffic.
+     */
+    CONNECTIVITY = 4,
+
+    /**
+     * Bug report limited to only wifi info.
+     */
+    WIFI = 5,
+
+    /**
+     * Default mode.
+     */
+    DEFAULT = 6
+};
diff --git a/dumpstate/1.1/vts/functional/Android.bp b/dumpstate/1.1/vts/functional/Android.bp
new file mode 100644
index 0000000..5267706
--- /dev/null
+++ b/dumpstate/1.1/vts/functional/Android.bp
@@ -0,0 +1,29 @@
+//
+// 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.
+//
+
+cc_test {
+    name: "VtsHalDumpstateV1_1TargetTest",
+    defaults: ["VtsHalTargetTestDefaults"],
+    srcs: ["VtsHalDumpstateV1_1TargetTest.cpp"],
+    static_libs: [
+        "android.hardware.dumpstate@1.0",
+        "android.hardware.dumpstate@1.1",
+    ],
+    test_suites: [
+        "general-tests",
+        "vts-core",
+    ],
+}
diff --git a/dumpstate/1.1/vts/functional/VtsHalDumpstateV1_1TargetTest.cpp b/dumpstate/1.1/vts/functional/VtsHalDumpstateV1_1TargetTest.cpp
new file mode 100644
index 0000000..3b6051c
--- /dev/null
+++ b/dumpstate/1.1/vts/functional/VtsHalDumpstateV1_1TargetTest.cpp
@@ -0,0 +1,171 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "dumpstate_1_1_hidl_hal_test"
+
+#include <fcntl.h>
+#include <unistd.h>
+#include <vector>
+
+#include <android/hardware/dumpstate/1.1/IDumpstateDevice.h>
+#include <android/hardware/dumpstate/1.1/types.h>
+#include <cutils/native_handle.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
+#include <log/log.h>
+
+using ::android::sp;
+using ::android::hardware::Return;
+using ::android::hardware::dumpstate::V1_1::DumpstateMode;
+using ::android::hardware::dumpstate::V1_1::IDumpstateDevice;
+
+class DumpstateHidl1_1Test : public ::testing::TestWithParam<std::string> {
+  public:
+    virtual void SetUp() override {
+        dumpstate = IDumpstateDevice::getService(GetParam());
+        ASSERT_NE(dumpstate, nullptr) << "Could not get HIDL instance";
+    }
+
+    sp<IDumpstateDevice> dumpstate;
+};
+
+#define TEST_FOR_DUMPSTATE_MODE(name, body, mode) \
+    TEST_P(DumpstateHidl1_1Test, name##_##mode) { body(DumpstateMode::mode); }
+
+#define TEST_FOR_ALL_DUMPSTATE_MODES(name, body)       \
+    TEST_FOR_DUMPSTATE_MODE(name, body, FULL);         \
+    TEST_FOR_DUMPSTATE_MODE(name, body, INTERACTIVE);  \
+    TEST_FOR_DUMPSTATE_MODE(name, body, REMOTE);       \
+    TEST_FOR_DUMPSTATE_MODE(name, body, WEAR);         \
+    TEST_FOR_DUMPSTATE_MODE(name, body, CONNECTIVITY); \
+    TEST_FOR_DUMPSTATE_MODE(name, body, WIFI);         \
+    TEST_FOR_DUMPSTATE_MODE(name, body, DEFAULT);
+
+const uint64_t kDefaultTimeoutMillis = 30 * 1000;  // 30 seconds
+
+// Negative test: make sure dumpstateBoard() doesn't crash when passed a null pointer.
+TEST_FOR_ALL_DUMPSTATE_MODES(TestNullHandle, [this](DumpstateMode mode) {
+    Return<void> status = dumpstate->dumpstateBoard_1_1(nullptr, mode, kDefaultTimeoutMillis);
+
+    ASSERT_TRUE(status.isOk()) << "Status should be ok: " << status.description();
+});
+
+// Negative test: make sure dumpstateBoard() ignores a handle with no FD.
+TEST_FOR_ALL_DUMPSTATE_MODES(TestHandleWithNoFd, [this](DumpstateMode mode) {
+    native_handle_t* handle = native_handle_create(0, 0);
+    ASSERT_NE(handle, nullptr) << "Could not create native_handle";
+
+    Return<void> status = dumpstate->dumpstateBoard_1_1(handle, mode, kDefaultTimeoutMillis);
+
+    ASSERT_TRUE(status.isOk()) << "Status should be ok: " << status.description();
+
+    native_handle_close(handle);
+    native_handle_delete(handle);
+});
+
+// Positive test: make sure dumpstateBoard() writes something to the FD.
+TEST_FOR_ALL_DUMPSTATE_MODES(TestOk, [this](DumpstateMode mode) {
+    // Index 0 corresponds to the read end of the pipe; 1 to the write end.
+    int fds[2];
+    ASSERT_EQ(0, pipe2(fds, O_NONBLOCK)) << errno;
+
+    native_handle_t* handle = native_handle_create(1, 0);
+    ASSERT_NE(handle, nullptr) << "Could not create native_handle";
+    handle->data[0] = fds[1];
+
+    Return<void> status = dumpstate->dumpstateBoard_1_1(handle, mode, kDefaultTimeoutMillis);
+    ASSERT_TRUE(status.isOk()) << "Status should be ok: " << status.description();
+
+    // Check that at least one byte was written
+    char buff;
+    ASSERT_EQ(1, read(fds[0], &buff, 1)) << "dumped nothing";
+
+    native_handle_close(handle);
+    native_handle_delete(handle);
+});
+
+// Positive test: make sure dumpstateBoard() doesn't crash with two FDs.
+TEST_FOR_ALL_DUMPSTATE_MODES(TestHandleWithTwoFds, [this](DumpstateMode mode) {
+    int fds1[2];
+    int fds2[2];
+    ASSERT_EQ(0, pipe2(fds1, O_NONBLOCK)) << errno;
+    ASSERT_EQ(0, pipe2(fds2, O_NONBLOCK)) << errno;
+
+    native_handle_t* handle = native_handle_create(2, 0);
+    ASSERT_NE(handle, nullptr) << "Could not create native_handle";
+    handle->data[0] = fds1[1];
+    handle->data[1] = fds2[1];
+
+    Return<void> status = dumpstate->dumpstateBoard_1_1(handle, mode, kDefaultTimeoutMillis);
+    ASSERT_TRUE(status.isOk()) << "Status should be ok: " << status.description();
+
+    native_handle_close(handle);
+    native_handle_delete(handle);
+});
+
+// Make sure dumpstateBoard_1_1 actually validates its arguments.
+TEST_P(DumpstateHidl1_1Test, TestInvalidModeArgument_Negative) {
+    int fds[2];
+    ASSERT_EQ(0, pipe2(fds, O_NONBLOCK)) << errno;
+
+    native_handle_t* handle = native_handle_create(1, 0);
+    ASSERT_NE(handle, nullptr) << "Could not create native_handle";
+    handle->data[0] = fds[1];
+
+    Return<void> status = dumpstate->dumpstateBoard_1_1(handle, static_cast<DumpstateMode>(-100),
+                                                        kDefaultTimeoutMillis);
+    ASSERT_FALSE(status.isOk()) << "Status should not be ok with invalid mode param: "
+                                << status.description();
+
+    native_handle_close(handle);
+    native_handle_delete(handle);
+}
+
+TEST_P(DumpstateHidl1_1Test, TestInvalidModeArgument_Undefined) {
+    int fds[2];
+    ASSERT_EQ(0, pipe2(fds, O_NONBLOCK)) << errno;
+
+    native_handle_t* handle = native_handle_create(1, 0);
+    ASSERT_NE(handle, nullptr) << "Could not create native_handle";
+    handle->data[0] = fds[1];
+
+    Return<void> status = dumpstate->dumpstateBoard_1_1(handle, static_cast<DumpstateMode>(9001),
+                                                        kDefaultTimeoutMillis);
+    ASSERT_FALSE(status.isOk()) << "Status should not be ok with invalid mode param: "
+                                << status.description();
+
+    native_handle_close(handle);
+    native_handle_delete(handle);
+}
+
+// Make sure toggling device logging doesn't crash.
+TEST_P(DumpstateHidl1_1Test, TestEnableDeviceLogging) {
+    Return<bool> status = dumpstate->setDeviceLoggingEnabled(true);
+
+    ASSERT_TRUE(status.isOk()) << "Status should be ok: " << status.description();
+}
+
+TEST_P(DumpstateHidl1_1Test, TestDisableDeviceLogging) {
+    Return<bool> status = dumpstate->setDeviceLoggingEnabled(false);
+
+    ASSERT_TRUE(status.isOk()) << "Status should be ok: " << status.description();
+}
+
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, DumpstateHidl1_1Test,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IDumpstateDevice::descriptor)),
+        android::hardware::PrintInstanceNameToString);
diff --git a/gnss/1.0/IGnssCallback.hal b/gnss/1.0/IGnssCallback.hal
index d62676f..311ab21 100644
--- a/gnss/1.0/IGnssCallback.hal
+++ b/gnss/1.0/IGnssCallback.hal
@@ -90,6 +90,7 @@
          * - QZSS:    193-200
          * - Galileo: 1-36
          * - Beidou:  1-37
+         * - IRNSS:   1-14
          */
         int16_t svid;
 
diff --git a/gnss/1.0/vts/functional/VtsHalGnssV1_0TargetTest.cpp b/gnss/1.0/vts/functional/VtsHalGnssV1_0TargetTest.cpp
index 1a80ecf..6183a1a 100644
--- a/gnss/1.0/vts/functional/VtsHalGnssV1_0TargetTest.cpp
+++ b/gnss/1.0/vts/functional/VtsHalGnssV1_0TargetTest.cpp
@@ -22,6 +22,7 @@
 #include <log/log.h>
 
 #include <chrono>
+#include <cmath>
 #include <condition_variable>
 #include <mutex>
 
@@ -403,6 +404,34 @@
 }
 
 /*
+ * InjectSeedLocation:
+ * Injects a seed location and ensures the injected seed location is not fused in the resulting
+ * GNSS location.
+ */
+TEST_P(GnssHalTest, InjectSeedLocation) {
+    // An arbitrary position in North Pacific Ocean (where no VTS labs will ever likely be located).
+    const double seedLatDegrees = 32.312894;
+    const double seedLngDegrees = -172.954117;
+    const float seedAccuracyMeters = 150.0;
+
+    auto result = gnss_hal_->injectLocation(seedLatDegrees, seedLngDegrees, seedAccuracyMeters);
+    ASSERT_TRUE(result.isOk());
+    EXPECT_TRUE(result);
+
+    StartAndGetSingleLocation(false);
+
+    // Ensure we don't get a location anywhere within 111km (1 degree of lat or lng) of the seed
+    // location.
+    EXPECT_TRUE(std::abs(last_location_.latitudeDegrees - seedLatDegrees) > 1.0 ||
+                std::abs(last_location_.longitudeDegrees - seedLngDegrees) > 1.0);
+
+    StopAndClearLocations();
+
+    auto resultVoid = gnss_hal_->deleteAidingData(IGnss::GnssAidingData::DELETE_POSITION);
+    ASSERT_TRUE(resultVoid.isOk());
+}
+
+/*
  * GetAllExtentions:
  * Tries getting all optional extensions, and ensures a valid return
  *   null or actual extension, no crash.
diff --git a/gnss/1.1/default/Android.bp b/gnss/1.1/default/Android.bp
index 95bd7f3..9c498d5 100644
--- a/gnss/1.1/default/Android.bp
+++ b/gnss/1.1/default/Android.bp
@@ -14,6 +14,8 @@
         "libhidlbase",
         "libutils",
         "liblog",
+        "android.hardware.gnss@2.1",
+        "android.hardware.gnss@2.0",
         "android.hardware.gnss@1.1",
         "android.hardware.gnss@1.0",
     ],
diff --git a/gnss/1.1/default/Gnss.cpp b/gnss/1.1/default/Gnss.cpp
index 4abe707..5043649 100644
--- a/gnss/1.1/default/Gnss.cpp
+++ b/gnss/1.1/default/Gnss.cpp
@@ -44,7 +44,7 @@
             auto svStatus = this->getMockSvStatus();
             this->reportSvStatus(svStatus);
 
-            auto location = Utils::getMockLocation();
+            auto location = Utils::getMockLocationV1_0();
             this->reportLocation(location);
 
             std::this_thread::sleep_for(std::chrono::milliseconds(mMinIntervalMs));
@@ -197,14 +197,14 @@
 Return<GnssSvStatus> Gnss::getMockSvStatus() const {
     std::unique_lock<std::recursive_mutex> lock(mGnssConfiguration->getMutex());
     GnssSvInfo mockGnssSvInfoList[] = {
-            Utils::getSvInfo(3, GnssConstellationType::GPS, 32.5, 59.1, 166.5),
-            Utils::getSvInfo(5, GnssConstellationType::GPS, 27.0, 29.0, 56.5),
-            Utils::getSvInfo(17, GnssConstellationType::GPS, 30.5, 71.0, 77.0),
-            Utils::getSvInfo(26, GnssConstellationType::GPS, 24.1, 28.0, 253.0),
-            Utils::getSvInfo(5, GnssConstellationType::GLONASS, 20.5, 11.5, 116.0),
-            Utils::getSvInfo(17, GnssConstellationType::GLONASS, 21.5, 28.5, 186.0),
-            Utils::getSvInfo(18, GnssConstellationType::GLONASS, 28.3, 38.8, 69.0),
-            Utils::getSvInfo(10, GnssConstellationType::GLONASS, 25.0, 66.0, 247.0)};
+            Utils::getMockSvInfoV1_0(3, GnssConstellationType::GPS, 32.5, 59.1, 166.5),
+            Utils::getMockSvInfoV1_0(5, GnssConstellationType::GPS, 27.0, 29.0, 56.5),
+            Utils::getMockSvInfoV1_0(17, GnssConstellationType::GPS, 30.5, 71.0, 77.0),
+            Utils::getMockSvInfoV1_0(26, GnssConstellationType::GPS, 24.1, 28.0, 253.0),
+            Utils::getMockSvInfoV1_0(5, GnssConstellationType::GLONASS, 20.5, 11.5, 116.0),
+            Utils::getMockSvInfoV1_0(17, GnssConstellationType::GLONASS, 21.5, 28.5, 186.0),
+            Utils::getMockSvInfoV1_0(18, GnssConstellationType::GLONASS, 28.3, 38.8, 69.0),
+            Utils::getMockSvInfoV1_0(10, GnssConstellationType::GLONASS, 25.0, 66.0, 247.0)};
 
     GnssSvStatus svStatus = {.numSvs = sizeof(mockGnssSvInfoList) / sizeof(GnssSvInfo)};
     for (uint32_t i = 0; i < svStatus.numSvs; i++) {
diff --git a/gnss/1.1/vts/functional/Android.bp b/gnss/1.1/vts/functional/Android.bp
index cc34290..369a89d 100644
--- a/gnss/1.1/vts/functional/Android.bp
+++ b/gnss/1.1/vts/functional/Android.bp
@@ -29,6 +29,10 @@
     ],
     shared_libs: [
         "android.hardware.gnss.measurement_corrections@1.0",
+        "android.hardware.gnss.measurement_corrections@1.1",
     ],
-    test_suites: ["general-tests"],
+    test_suites: [
+        "general-tests",
+        "vts-core",
+    ],
 }
diff --git a/gnss/1.1/vts/functional/VtsHalGnssV1_1TargetTest.cpp b/gnss/1.1/vts/functional/VtsHalGnssV1_1TargetTest.cpp
index ca9eef4..4a0a7f9 100644
--- a/gnss/1.1/vts/functional/VtsHalGnssV1_1TargetTest.cpp
+++ b/gnss/1.1/vts/functional/VtsHalGnssV1_1TargetTest.cpp
@@ -15,15 +15,15 @@
  */
 #define LOG_TAG "VtsHalGnssV1_1TargetTest"
 
-#include <VtsHalHidlTargetTestBase.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 
 #include "gnss_hal_test.h"
 
-int main(int argc, char** argv) {
-    ::testing::AddGlobalTestEnvironment(GnssHidlEnvironment::Instance());
-    ::testing::InitGoogleTest(&argc, argv);
-    GnssHidlEnvironment::Instance()->init(&argc, argv);
-    int status = RUN_ALL_TESTS();
-    ALOGI("Test result = %d", status);
-    return status;
-}
+using android::hardware::gnss::V1_1::IGnss;
+
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, GnssHalTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IGnss::descriptor)),
+        android::hardware::PrintInstanceNameToString);
\ No newline at end of file
diff --git a/gnss/1.1/vts/functional/gnss_hal_test.cpp b/gnss/1.1/vts/functional/gnss_hal_test.cpp
index e6e3c85..88fbff8 100644
--- a/gnss/1.1/vts/functional/gnss_hal_test.cpp
+++ b/gnss/1.1/vts/functional/gnss_hal_test.cpp
@@ -17,6 +17,8 @@
 #define LOG_TAG "GnssHalTest"
 
 #include <android/hidl/manager/1.2/IServiceManager.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
 #include <hidl/ServiceManagement.h>
 
 #include <gnss_hal_test.h>
@@ -28,18 +30,8 @@
 
 using ::android::hardware::gnss::common::Utils;
 
-// Implementations for the main test class for GNSS HAL
-GnssHalTest::GnssHalTest()
-    : info_called_count_(0),
-      capabilities_called_count_(0),
-      location_called_count_(0),
-      name_called_count_(0),
-      notify_count_(0) {}
-
 void GnssHalTest::SetUp() {
-    gnss_hal_ = ::testing::VtsHalHidlTargetTestBase::getService<IGnss>(
-        GnssHidlEnvironment::Instance()->getServiceName<IGnss>());
-    list_gnss_sv_status_.clear();
+    gnss_hal_ = IGnss::getService(GetParam());
     ASSERT_NE(gnss_hal_, nullptr);
 
     SetUpGnssCallback();
@@ -48,14 +40,15 @@
 void GnssHalTest::TearDown() {
     if (gnss_hal_ != nullptr) {
         gnss_hal_->cleanup();
+        gnss_hal_ = nullptr;
     }
-    if (notify_count_ > 0) {
-        ALOGW("%d unprocessed callbacks discarded", notify_count_);
-    }
+
+    // Set to nullptr to destruct the callback event queues and warn of any unprocessed events.
+    gnss_cb_ = nullptr;
 }
 
 void GnssHalTest::SetUpGnssCallback() {
-    gnss_cb_ = new GnssCallback(*this);
+    gnss_cb_ = new GnssCallback();
     ASSERT_NE(gnss_cb_, nullptr);
 
     auto result = gnss_hal_->setCallback_1_1(gnss_cb_);
@@ -69,13 +62,13 @@
     /*
      * All capabilities, name and systemInfo callbacks should trigger
      */
-    EXPECT_EQ(std::cv_status::no_timeout, wait(TIMEOUT_SEC));
-    EXPECT_EQ(std::cv_status::no_timeout, wait(TIMEOUT_SEC));
-    EXPECT_EQ(std::cv_status::no_timeout, wait(TIMEOUT_SEC));
+    EXPECT_TRUE(gnss_cb_->capabilities_cbq_.retrieve(gnss_cb_->last_capabilities_, TIMEOUT_SEC));
+    EXPECT_TRUE(gnss_cb_->info_cbq_.retrieve(gnss_cb_->last_info_, TIMEOUT_SEC));
+    EXPECT_TRUE(gnss_cb_->name_cbq_.retrieve(gnss_cb_->last_name_, TIMEOUT_SEC));
 
-    EXPECT_EQ(capabilities_called_count_, 1);
-    EXPECT_EQ(info_called_count_, 1);
-    EXPECT_EQ(name_called_count_, 1);
+    EXPECT_EQ(gnss_cb_->capabilities_cbq_.calledCount(), 1);
+    EXPECT_EQ(gnss_cb_->info_cbq_.calledCount(), 1);
+    EXPECT_EQ(gnss_cb_->name_cbq_.calledCount(), 1);
 }
 
 void GnssHalTest::StopAndClearLocations() {
@@ -89,9 +82,9 @@
      * the last reply for final startup messages to arrive (esp. system
      * info.)
      */
-    while (wait(TIMEOUT_SEC) == std::cv_status::no_timeout) {
+    while (gnss_cb_->location_cbq_.retrieve(gnss_cb_->last_location_, TIMEOUT_SEC)) {
     }
-    location_called_count_ = 0;
+    gnss_cb_->location_cbq_.reset();
 }
 
 void GnssHalTest::SetPositionMode(const int min_interval_msec, const bool low_power_mode) {
@@ -118,19 +111,22 @@
      */
     const int kFirstGnssLocationTimeoutSeconds = 75;
 
-    wait(kFirstGnssLocationTimeoutSeconds);
-    EXPECT_EQ(location_called_count_, 1);
+    EXPECT_TRUE(gnss_cb_->location_cbq_.retrieve(gnss_cb_->last_location_,
+                                                 kFirstGnssLocationTimeoutSeconds));
+    int locationCalledCount = gnss_cb_->location_cbq_.calledCount();
+    EXPECT_EQ(locationCalledCount, 1);
 
-    if (location_called_count_ > 0) {
+    if (locationCalledCount > 0) {
         // don't require speed on first fix
-        CheckLocation(last_location_, false);
+        CheckLocation(gnss_cb_->last_location_, false);
         return true;
     }
     return false;
 }
 
 void GnssHalTest::CheckLocation(GnssLocation& location, bool check_speed) {
-    bool check_more_accuracies = (info_called_count_ > 0 && last_info_.yearOfHw >= 2017);
+    const bool check_more_accuracies =
+            (gnss_cb_->info_cbq_.calledCount() > 0 && gnss_cb_->last_info_.yearOfHw >= 2017);
 
     Utils::checkLocation(location, check_speed, check_more_accuracies);
 }
@@ -145,12 +141,14 @@
     EXPECT_TRUE(StartAndCheckFirstLocation());
 
     for (int i = 1; i < count; i++) {
-        EXPECT_EQ(std::cv_status::no_timeout, wait(kLocationTimeoutSubsequentSec));
-        EXPECT_EQ(location_called_count_, i + 1);
+        EXPECT_TRUE(gnss_cb_->location_cbq_.retrieve(gnss_cb_->last_location_,
+                                                     kLocationTimeoutSubsequentSec));
+        int locationCalledCount = gnss_cb_->location_cbq_.calledCount();
+        EXPECT_EQ(locationCalledCount, i + 1);
         // Don't cause confusion by checking details if no location yet
-        if (location_called_count_ > 0) {
+        if (locationCalledCount > 0) {
             // Should be more than 1 location by now, but if not, still don't check first fix speed
-            CheckLocation(last_location_, location_called_count_ > 1);
+            CheckLocation(gnss_cb_->last_location_, locationCalledCount > 1);
         }
     }
 }
@@ -174,22 +172,33 @@
                 hasGnssHalVersion_2_0 = registered.size() != 0;
             });
 
-    return hasGnssHalVersion_1_1 && !hasGnssHalVersion_2_0;
+    bool hasGnssHalVersion_2_1 = false;
+    manager->listManifestByInterface(
+            "android.hardware.gnss@2.1::IGnss",
+            [&hasGnssHalVersion_2_1](const hidl_vec<hidl_string>& registered) {
+                hasGnssHalVersion_2_1 = registered.size() != 0;
+            });
+
+    return hasGnssHalVersion_1_1 && !hasGnssHalVersion_2_0 && !hasGnssHalVersion_2_1;
 }
 
-GnssConstellationType GnssHalTest::startLocationAndGetNonGpsConstellation() {
-    const int kLocationsToAwait = 3;
-
-    StartAndCheckLocations(kLocationsToAwait);
+GnssConstellationType GnssHalTest::startLocationAndGetNonGpsConstellation(
+        const int locations_to_await, const int gnss_sv_info_list_timeout) {
+    gnss_cb_->location_cbq_.reset();
+    StartAndCheckLocations(locations_to_await);
+    const int location_called_count = gnss_cb_->location_cbq_.calledCount();
 
     // Tolerate 1 less sv status to handle edge cases in reporting.
-    EXPECT_GE((int)list_gnss_sv_status_.size() + 1, kLocationsToAwait);
-    ALOGD("Observed %d GnssSvStatus, while awaiting %d Locations (%d received)",
-          (int)list_gnss_sv_status_.size(), kLocationsToAwait, location_called_count_);
+    int sv_status_cbq_size = gnss_cb_->sv_status_cbq_.size();
+    EXPECT_GE(sv_status_cbq_size + 1, locations_to_await);
+    ALOGD("Observed %d GnssSvStatus, while awaiting %d Locations (%d received)", sv_status_cbq_size,
+          locations_to_await, location_called_count);
 
-    // Find first non-GPS constellation
+    // Find first non-GPS constellation to blacklist
     GnssConstellationType constellation_to_blacklist = GnssConstellationType::UNKNOWN;
-    for (const auto& gnss_sv_status : list_gnss_sv_status_) {
+    for (int i = 0; i < sv_status_cbq_size; ++i) {
+        IGnssCallback::GnssSvStatus gnss_sv_status;
+        gnss_cb_->sv_status_cbq_.retrieve(gnss_sv_status, gnss_sv_info_list_timeout);
         for (uint32_t iSv = 0; iSv < gnss_sv_status.numSvs; iSv++) {
             const auto& gnss_sv = gnss_sv_status.gnssSvList[iSv];
             if ((gnss_sv.svFlag & IGnssCallback::GnssSvFlags::USED_IN_FIX) &&
@@ -207,66 +216,47 @@
 
     if (constellation_to_blacklist == GnssConstellationType::UNKNOWN) {
         ALOGI("No non-GPS constellations found, constellation blacklist test less effective.");
-        // Proceed functionally to return something.
+        // Proceed functionally to blacklist something.
         constellation_to_blacklist = GnssConstellationType::GLONASS;
     }
     return constellation_to_blacklist;
 }
 
-void GnssHalTest::notify() {
-    std::unique_lock<std::mutex> lock(mtx_);
-    notify_count_++;
-    cv_.notify_one();
-}
-
-std::cv_status GnssHalTest::wait(int timeout_seconds) {
-    std::unique_lock<std::mutex> lock(mtx_);
-
-    auto status = std::cv_status::no_timeout;
-    while (notify_count_ == 0) {
-        status = cv_.wait_for(lock, std::chrono::seconds(timeout_seconds));
-        if (status == std::cv_status::timeout) return status;
-    }
-    notify_count_--;
-    return status;
-}
+GnssHalTest::GnssCallback::GnssCallback()
+    : info_cbq_("system_info"),
+      name_cbq_("name"),
+      capabilities_cbq_("capabilities"),
+      location_cbq_("location"),
+      sv_status_cbq_("sv_status") {}
 
 Return<void> GnssHalTest::GnssCallback::gnssSetSystemInfoCb(
     const IGnssCallback::GnssSystemInfo& info) {
     ALOGI("Info received, year %d", info.yearOfHw);
-    parent_.info_called_count_++;
-    parent_.last_info_ = info;
-    parent_.notify();
+    info_cbq_.store(info);
     return Void();
 }
 
 Return<void> GnssHalTest::GnssCallback::gnssSetCapabilitesCb(uint32_t capabilities) {
     ALOGI("Capabilities received %d", capabilities);
-    parent_.capabilities_called_count_++;
-    parent_.last_capabilities_ = capabilities;
-    parent_.notify();
+    capabilities_cbq_.store(capabilities);
     return Void();
 }
 
 Return<void> GnssHalTest::GnssCallback::gnssNameCb(const android::hardware::hidl_string& name) {
     ALOGI("Name received: %s", name.c_str());
-    parent_.name_called_count_++;
-    parent_.last_name_ = name;
-    parent_.notify();
+    name_cbq_.store(name);
     return Void();
 }
 
 Return<void> GnssHalTest::GnssCallback::gnssLocationCb(const GnssLocation& location) {
     ALOGI("Location received");
-    parent_.location_called_count_++;
-    parent_.last_location_ = location;
-    parent_.notify();
+    location_cbq_.store(location);
     return Void();
 }
 
 Return<void> GnssHalTest::GnssCallback::gnssSvStatusCb(
     const IGnssCallback::GnssSvStatus& svStatus) {
     ALOGI("GnssSvStatus received");
-    parent_.list_gnss_sv_status_.emplace_back(svStatus);
+    sv_status_cbq_.store(svStatus);
     return Void();
 }
diff --git a/gnss/1.1/vts/functional/gnss_hal_test.h b/gnss/1.1/vts/functional/gnss_hal_test.h
index 09ebadc..88b7723 100644
--- a/gnss/1.1/vts/functional/gnss_hal_test.h
+++ b/gnss/1.1/vts/functional/gnss_hal_test.h
@@ -19,18 +19,15 @@
 
 #include <android/hardware/gnss/1.1/IGnss.h>
 
-#include <VtsHalHidlTargetTestBase.h>
-#include <VtsHalHidlTargetTestEnvBase.h>
-
-#include <condition_variable>
-#include <list>
-#include <mutex>
+#include <gtest/gtest.h>
+#include "GnssCallbackEventQueue.h"
 
 using android::hardware::Return;
 using android::hardware::Void;
 
 using android::hardware::gnss::V1_0::GnssLocation;
 
+using android::hardware::gnss::common::GnssCallbackEventQueue;
 using android::hardware::gnss::V1_0::GnssConstellationType;
 using android::hardware::gnss::V1_0::GnssLocationFlags;
 using android::hardware::gnss::V1_1::IGnss;
@@ -40,26 +37,9 @@
 
 #define TIMEOUT_SEC 2  // for basic commands/responses
 
-// Test environment for GNSS HIDL HAL.
-class GnssHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
-   public:
-    // get the test environment singleton
-    static GnssHidlEnvironment* Instance() {
-        static GnssHidlEnvironment* instance = new GnssHidlEnvironment;
-        return instance;
-    }
-
-    virtual void registerTestServices() override { registerTestService<IGnss>(); }
-
-   private:
-    GnssHidlEnvironment() {}
-};
-
 // The main test class for GNSS HAL.
-class GnssHalTest : public ::testing::VtsHalHidlTargetTestBase {
-   public:
-    GnssHalTest();
-
+class GnssHalTest : public testing::TestWithParam<std::string> {
+  public:
     virtual void SetUp() override;
 
     virtual void TearDown() override;
@@ -73,32 +53,40 @@
     /* Callback class for data & Event. */
     class GnssCallback : public IGnssCallback {
        public:
-        GnssHalTest& parent_;
+         IGnssCallback::GnssSystemInfo last_info_;
+         android::hardware::hidl_string last_name_;
+         uint32_t last_capabilities_;
+         GnssLocation last_location_;
 
-        GnssCallback(GnssHalTest& parent) : parent_(parent){};
+         GnssCallbackEventQueue<IGnssCallback::GnssSystemInfo> info_cbq_;
+         GnssCallbackEventQueue<android::hardware::hidl_string> name_cbq_;
+         GnssCallbackEventQueue<uint32_t> capabilities_cbq_;
+         GnssCallbackEventQueue<GnssLocation> location_cbq_;
+         GnssCallbackEventQueue<IGnssCallback::GnssSvStatus> sv_status_cbq_;
 
-        virtual ~GnssCallback() = default;
+         GnssCallback();
+         virtual ~GnssCallback() = default;
 
-        // Dummy callback handlers
-        Return<void> gnssStatusCb(const IGnssCallback::GnssStatusValue /* status */) override {
-            return Void();
-        }
-        Return<void> gnssNmeaCb(int64_t /* timestamp */,
-                                const android::hardware::hidl_string& /* nmea */) override {
-            return Void();
-        }
-        Return<void> gnssAcquireWakelockCb() override { return Void(); }
-        Return<void> gnssReleaseWakelockCb() override { return Void(); }
-        Return<void> gnssRequestLocationCb(bool /* independentFromGnss */) override {
-            return Void();
-        }
-        Return<void> gnssRequestTimeCb() override { return Void(); }
-        // Actual (test) callback handlers
-        Return<void> gnssNameCb(const android::hardware::hidl_string& name) override;
-        Return<void> gnssLocationCb(const GnssLocation& location) override;
-        Return<void> gnssSetCapabilitesCb(uint32_t capabilities) override;
-        Return<void> gnssSetSystemInfoCb(const IGnssCallback::GnssSystemInfo& info) override;
-        Return<void> gnssSvStatusCb(const IGnssCallback::GnssSvStatus& svStatus) override;
+         // Dummy callback handlers
+         Return<void> gnssStatusCb(const IGnssCallback::GnssStatusValue /* status */) override {
+             return Void();
+         }
+         Return<void> gnssNmeaCb(int64_t /* timestamp */,
+                                 const android::hardware::hidl_string& /* nmea */) override {
+             return Void();
+         }
+         Return<void> gnssAcquireWakelockCb() override { return Void(); }
+         Return<void> gnssReleaseWakelockCb() override { return Void(); }
+         Return<void> gnssRequestLocationCb(bool /* independentFromGnss */) override {
+             return Void();
+         }
+         Return<void> gnssRequestTimeCb() override { return Void(); }
+         // Actual (test) callback handlers
+         Return<void> gnssNameCb(const android::hardware::hidl_string& name) override;
+         Return<void> gnssLocationCb(const GnssLocation& location) override;
+         Return<void> gnssSetCapabilitesCb(uint32_t capabilities) override;
+         Return<void> gnssSetSystemInfoCb(const IGnssCallback::GnssSystemInfo& info) override;
+         Return<void> gnssSvStatusCb(const IGnssCallback::GnssSvStatus& svStatus) override;
     };
 
     /*
@@ -160,29 +148,11 @@
      * Note that location is not stopped in this method. The client should call
      * StopAndClearLocations() after the call.
      */
-    GnssConstellationType startLocationAndGetNonGpsConstellation();
+    GnssConstellationType startLocationAndGetNonGpsConstellation(
+            const int locations_to_await, const int gnss_sv_info_list_timeout);
 
     sp<IGnss> gnss_hal_;         // GNSS HAL to call into
-    sp<IGnssCallback> gnss_cb_;  // Primary callback interface
-
-    /* Count of calls to set the following items, and the latest item (used by
-     * test.)
-     */
-    int info_called_count_;
-    IGnssCallback::GnssSystemInfo last_info_;
-    uint32_t last_capabilities_;
-    int capabilities_called_count_;
-    int location_called_count_;
-    GnssLocation last_location_;
-    list<IGnssCallback::GnssSvStatus> list_gnss_sv_status_;
-
-    int name_called_count_;
-    android::hardware::hidl_string last_name_;
-
-   private:
-    std::mutex mtx_;
-    std::condition_variable cv_;
-    int notify_count_;
+    sp<GnssCallback> gnss_cb_;   // Primary callback interface
 };
 
 #endif  // GNSS_HAL_TEST_H_
diff --git a/gnss/1.1/vts/functional/gnss_hal_test_cases.cpp b/gnss/1.1/vts/functional/gnss_hal_test_cases.cpp
index 503e419..e0d8b54 100644
--- a/gnss/1.1/vts/functional/gnss_hal_test_cases.cpp
+++ b/gnss/1.1/vts/functional/gnss_hal_test_cases.cpp
@@ -18,9 +18,8 @@
 
 #include <gnss_hal_test.h>
 
-#include <VtsHalHidlTargetTestBase.h>
-
 #include <android/hardware/gnss/1.1/IGnssConfiguration.h>
+#include <gtest/gtest.h>
 
 using android::hardware::hidl_vec;
 
@@ -39,18 +38,18 @@
  *
  * Empty test fixture to verify basic Setup & Teardown
  */
-TEST_F(GnssHalTest, SetupTeardownCreateCleanup) {}
+TEST_P(GnssHalTest, SetupTeardownCreateCleanup) {}
 
 /*
  * TestGnssMeasurementCallback:
  * Gets the GnssMeasurementExtension and verify that it returns an actual extension.
  */
-TEST_F(GnssHalTest, TestGnssMeasurementCallback) {
+TEST_P(GnssHalTest, TestGnssMeasurementCallback) {
     auto gnssMeasurement_1_1 = gnss_hal_->getExtensionGnssMeasurement_1_1();
     ASSERT_TRUE(gnssMeasurement_1_1.isOk());
     auto gnssMeasurement_1_0 = gnss_hal_->getExtensionGnssMeasurement();
     ASSERT_TRUE(gnssMeasurement_1_0.isOk());
-    if (last_capabilities_ & IGnssCallback::Capabilities::MEASUREMENTS) {
+    if (gnss_cb_->last_capabilities_ & IGnssCallback::Capabilities::MEASUREMENTS) {
         sp<IGnssMeasurement_1_1> iGnssMeas_1_1 = gnssMeasurement_1_1;
         sp<IGnssMeasurement_1_0> iGnssMeas_1_0 = gnssMeasurement_1_0;
         // At least one interface must be non-null.
@@ -65,7 +64,7 @@
  * NO_LOCATION_PERIOD_SEC and verfiy that no location is received. Also perform validity checks on
  * each received location.
  */
-TEST_F(GnssHalTest, GetLocationLowPower) {
+TEST_P(GnssHalTest, GetLocationLowPower) {
     if (!IsGnssHalVersion_1_1()) {
         ALOGI("Test GetLocationLowPower skipped. GNSS HAL version is greater than 1.1.");
         return;
@@ -78,8 +77,10 @@
     const bool kLowPowerMode = true;
 
     // Warmup period - VTS doesn't have AGPS access via GnssLocationProvider
-    StartAndCheckLocations(5);
+    gnss_cb_->location_cbq_.reset();
+    StartAndCheckLocations(kLocationsToCheck);
     StopAndClearLocations();
+    gnss_cb_->location_cbq_.reset();
 
     // Start of Low Power Mode test
     SetPositionMode(kMinIntervalMsec, kLowPowerMode);
@@ -93,24 +94,26 @@
         // Verify that kMinIntervalMsec is respected by waiting kNoLocationPeriodSec and
         // ensure that no location is received yet
 
-        wait(kNoLocationPeriodSec);
+        gnss_cb_->location_cbq_.retrieve(gnss_cb_->last_location_, kNoLocationPeriodSec);
+        const int location_called_count = gnss_cb_->location_cbq_.calledCount();
         // Tolerate (ignore) one extra location right after the first one
         // to handle startup edge case scheduling limitations in some implementations
-        if ((i == 1) && (location_called_count_ == 2)) {
-            CheckLocation(last_location_, true);
+        if ((i == 1) && (location_called_count == 2)) {
+            CheckLocation(gnss_cb_->last_location_, true);
             continue;  // restart the quiet wait period after this too-fast location
         }
-        EXPECT_LE(location_called_count_, i);
-        if (location_called_count_ != i) {
+        EXPECT_LE(location_called_count, i);
+        if (location_called_count != i) {
             ALOGW("GetLocationLowPower test - not enough locations received. %d vs. %d expected ",
-                  location_called_count_, i);
+                  location_called_count, i);
         }
 
-        if (std::cv_status::no_timeout !=
-            wait(kLocationTimeoutSubsequentSec - kNoLocationPeriodSec)) {
+        if (!gnss_cb_->location_cbq_.retrieve(
+                    gnss_cb_->last_location_,
+                    kLocationTimeoutSubsequentSec - kNoLocationPeriodSec)) {
             ALOGW("GetLocationLowPower test - timeout awaiting location %d", i);
         } else {
-            CheckLocation(last_location_, true);
+            CheckLocation(gnss_cb_->last_location_, true);
         }
     }
 
@@ -127,7 +130,8 @@
  */
 
 IGnssConfiguration::BlacklistedSource FindStrongFrequentNonGpsSource(
-    const list<IGnssCallback::GnssSvStatus> list_gnss_sv_status, const int min_observations) {
+        const std::list<IGnssCallback::GnssSvStatus> list_gnss_sv_status,
+        const int min_observations) {
     struct ComparableBlacklistedSource {
         IGnssConfiguration::BlacklistedSource id;
 
@@ -213,7 +217,7 @@
  * 5b) Retry a few times, in case GNSS search strategy takes a while to reacquire even the
  * formerly strongest satellite
  */
-TEST_F(GnssHalTest, BlacklistIndividualSatellites) {
+TEST_P(GnssHalTest, BlacklistIndividualSatellites) {
     if (!IsGnssHalVersion_1_1()) {
         ALOGI("Test BlacklistIndividualSatellites skipped. GNSS HAL version is greater than 1.1.");
         return;
@@ -222,12 +226,15 @@
     const int kLocationsToAwait = 3;
     const int kRetriesToUnBlacklist = 10;
 
+    gnss_cb_->location_cbq_.reset();
     StartAndCheckLocations(kLocationsToAwait);
+    int location_called_count = gnss_cb_->location_cbq_.calledCount();
 
     // Tolerate 1 less sv status to handle edge cases in reporting.
-    EXPECT_GE((int)list_gnss_sv_status_.size() + 1, kLocationsToAwait);
-    ALOGD("Observed %d GnssSvStatus, while awaiting %d Locations (%d received)",
-          (int)list_gnss_sv_status_.size(), kLocationsToAwait, location_called_count_);
+    int sv_status_cbq_size = gnss_cb_->sv_status_cbq_.size();
+    EXPECT_GE(sv_status_cbq_size + 1, kLocationsToAwait);
+    ALOGD("Observed %d GnssSvStatus, while awaiting %d Locations (%d received)", sv_status_cbq_size,
+          kLocationsToAwait, location_called_count);
 
     /*
      * Identify strongest SV seen at least kLocationsToAwait -1 times
@@ -235,8 +242,14 @@
      * observability (one epoch RF null)
      */
 
+    const int kGnssSvStatusTimeout = 2;
+    std::list<IGnssCallback::GnssSvStatus> sv_status_list;
+    int count = gnss_cb_->sv_status_cbq_.retrieve(sv_status_list, sv_status_cbq_size,
+                                                  kGnssSvStatusTimeout);
+    ASSERT_EQ(count, sv_status_cbq_size);
+
     IGnssConfiguration::BlacklistedSource source_to_blacklist =
-        FindStrongFrequentNonGpsSource(list_gnss_sv_status_, kLocationsToAwait - 1);
+            FindStrongFrequentNonGpsSource(sv_status_list, kLocationsToAwait - 1);
 
     if (source_to_blacklist.constellation == GnssConstellationType::UNKNOWN) {
         // Cannot find a non-GPS satellite. Let the test pass.
@@ -260,21 +273,26 @@
     EXPECT_TRUE(result);
 
     // retry and ensure satellite not used
-    list_gnss_sv_status_.clear();
+    gnss_cb_->sv_status_cbq_.reset();
 
+    gnss_cb_->location_cbq_.reset();
     StartAndCheckLocations(kLocationsToAwait);
 
     // early exit if test is being run with insufficient signal
-    if (location_called_count_ == 0) {
+    location_called_count = gnss_cb_->location_cbq_.calledCount();
+    if (location_called_count == 0) {
         ALOGE("0 Gnss locations received - ensure sufficient signal and retry");
     }
-    ASSERT_TRUE(location_called_count_ > 0);
+    ASSERT_TRUE(location_called_count > 0);
 
     // Tolerate 1 less sv status to handle edge cases in reporting.
-    EXPECT_GE((int)list_gnss_sv_status_.size() + 1, kLocationsToAwait);
-    ALOGD("Observed %d GnssSvStatus, while awaiting %d Locations (%d received)",
-          (int)list_gnss_sv_status_.size(), kLocationsToAwait, location_called_count_);
-    for (const auto& gnss_sv_status : list_gnss_sv_status_) {
+    sv_status_cbq_size = gnss_cb_->sv_status_cbq_.size();
+    EXPECT_GE(sv_status_cbq_size + 1, kLocationsToAwait);
+    ALOGD("Observed %d GnssSvStatus, while awaiting %d Locations (%d received)", sv_status_cbq_size,
+          kLocationsToAwait, location_called_count);
+    for (int i = 0; i < sv_status_cbq_size; ++i) {
+        IGnssCallback::GnssSvStatus gnss_sv_status;
+        gnss_cb_->sv_status_cbq_.retrieve(gnss_sv_status, kGnssSvStatusTimeout);
         for (uint32_t iSv = 0; iSv < gnss_sv_status.numSvs; iSv++) {
             const auto& gnss_sv = gnss_sv_status.gnssSvList[iSv];
             EXPECT_FALSE((gnss_sv.svid == source_to_blacklist.svid) &&
@@ -295,24 +313,28 @@
     int unblacklist_loops_remaining = kRetriesToUnBlacklist;
     while (!strongest_sv_is_reobserved && (unblacklist_loops_remaining-- > 0)) {
         StopAndClearLocations();
-        list_gnss_sv_status_.clear();
+        gnss_cb_->sv_status_cbq_.reset();
 
+        gnss_cb_->location_cbq_.reset();
         StartAndCheckLocations(kLocationsToAwait);
 
         // early exit loop if test is being run with insufficient signal
-        if (location_called_count_ == 0) {
+        location_called_count = gnss_cb_->location_cbq_.calledCount();
+        if (location_called_count == 0) {
             ALOGE("0 Gnss locations received - ensure sufficient signal and retry");
         }
-        ASSERT_TRUE(location_called_count_ > 0);
+        ASSERT_TRUE(location_called_count > 0);
 
         // Tolerate 1 less sv status to handle edge cases in reporting.
-        EXPECT_GE((int)list_gnss_sv_status_.size() + 1, kLocationsToAwait);
-        ALOGD(
-            "Clear blacklist, observed %d GnssSvStatus, while awaiting %d Locations"
-            ", tries remaining %d",
-            (int)list_gnss_sv_status_.size(), kLocationsToAwait, unblacklist_loops_remaining);
+        sv_status_cbq_size = gnss_cb_->sv_status_cbq_.size();
+        EXPECT_GE(sv_status_cbq_size + 1, kLocationsToAwait);
+        ALOGD("Clear blacklist, observed %d GnssSvStatus, while awaiting %d Locations"
+              ", tries remaining %d",
+              sv_status_cbq_size, kLocationsToAwait, unblacklist_loops_remaining);
 
-        for (const auto& gnss_sv_status : list_gnss_sv_status_) {
+        for (int i = 0; i < sv_status_cbq_size; ++i) {
+            IGnssCallback::GnssSvStatus gnss_sv_status;
+            gnss_cb_->sv_status_cbq_.retrieve(gnss_sv_status, kGnssSvStatusTimeout);
             for (uint32_t iSv = 0; iSv < gnss_sv_status.numSvs; iSv++) {
                 const auto& gnss_sv = gnss_sv_status.gnssSvList[iSv];
                 if ((gnss_sv.svid == source_to_blacklist.svid) &&
@@ -339,15 +361,18 @@
  * GnssStatus does not use any constellation but GPS.
  * 4a & b) Clean up by turning off location, and send in empty blacklist.
  */
-TEST_F(GnssHalTest, BlacklistConstellationWithLocationOff) {
+TEST_P(GnssHalTest, BlacklistConstellationWithLocationOff) {
     if (!IsGnssHalVersion_1_1()) {
         ALOGI("Test BlacklistConstellation skipped. GNSS HAL version is greater than 1.1.");
         return;
     }
 
     const int kLocationsToAwait = 3;
+    const int kGnssSvStatusTimeout = 2;
+
     // Find first non-GPS constellation to blacklist
-    GnssConstellationType constellation_to_blacklist = startLocationAndGetNonGpsConstellation();
+    GnssConstellationType constellation_to_blacklist =
+            startLocationAndGetNonGpsConstellation(kLocationsToAwait, kGnssSvStatusTimeout);
 
     // Turns off location
     StopAndClearLocations();
@@ -365,21 +390,25 @@
     sources.resize(1);
     sources[0] = source_to_blacklist;
 
+    // setBlacklist when location is off.
     auto result = gnss_configuration_hal->setBlacklist(sources);
     ASSERT_TRUE(result.isOk());
     EXPECT_TRUE(result);
 
     // retry and ensure constellation not used
-    list_gnss_sv_status_.clear();
+    gnss_cb_->sv_status_cbq_.reset();
 
-    location_called_count_ = 0;
+    gnss_cb_->location_cbq_.reset();
     StartAndCheckLocations(kLocationsToAwait);
 
     // Tolerate 1 less sv status to handle edge cases in reporting.
-    EXPECT_GE((int)list_gnss_sv_status_.size() + 1, kLocationsToAwait);
-    ALOGD("Observed %d GnssSvStatus, while awaiting %d Locations", (int)list_gnss_sv_status_.size(),
+    int sv_status_cbq_size = gnss_cb_->sv_status_cbq_.size();
+    EXPECT_GE(sv_status_cbq_size + 1, kLocationsToAwait);
+    ALOGD("Observed %d GnssSvStatus, while awaiting %d Locations", sv_status_cbq_size,
           kLocationsToAwait);
-    for (const auto& gnss_sv_status : list_gnss_sv_status_) {
+    for (int i = 0; i < sv_status_cbq_size; ++i) {
+        IGnssCallback::GnssSvStatus gnss_sv_status;
+        gnss_cb_->sv_status_cbq_.retrieve(gnss_sv_status, kGnssSvStatusTimeout);
         for (uint32_t iSv = 0; iSv < gnss_sv_status.numSvs; iSv++) {
             const auto& gnss_sv = gnss_sv_status.gnssSvList[iSv];
             EXPECT_FALSE((gnss_sv.constellation == source_to_blacklist.constellation) &&
@@ -400,19 +429,23 @@
  *
  * 1) Turns on location, waits for 3 locations, ensuring they are valid, and checks corresponding
  * GnssStatus for any non-GPS constellations.
- * 2a & b) Blacklist first non-GPS constellations, and turns off location.
+ * 2a & b) Blacklist first non-GPS constellation, and turn off location.
  * 3) Restart location, wait for 3 locations, ensuring they are valid, and checks corresponding
  * GnssStatus does not use any constellation but GPS.
  * 4a & b) Clean up by turning off location, and send in empty blacklist.
  */
-TEST_F(GnssHalTest, BlacklistConstellationWithLocationOn) {
+TEST_P(GnssHalTest, BlacklistConstellationWithLocationOn) {
     if (!IsGnssHalVersion_1_1()) {
         ALOGI("Test BlacklistConstellation skipped. GNSS HAL version is greater than 1.1.");
         return;
     }
 
     const int kLocationsToAwait = 3;
-    GnssConstellationType constellation_to_blacklist = startLocationAndGetNonGpsConstellation();
+    const int kGnssSvStatusTimeout = 2;
+
+    // Find first non-GPS constellation to blacklist
+    GnssConstellationType constellation_to_blacklist =
+            startLocationAndGetNonGpsConstellation(kLocationsToAwait, kGnssSvStatusTimeout);
 
     IGnssConfiguration::BlacklistedSource source_to_blacklist;
     source_to_blacklist.constellation = constellation_to_blacklist;
@@ -427,6 +460,7 @@
     sources.resize(1);
     sources[0] = source_to_blacklist;
 
+    // setBlacklist when location is still on
     auto result = gnss_configuration_hal->setBlacklist(sources);
     ASSERT_TRUE(result.isOk());
     EXPECT_TRUE(result);
@@ -435,16 +469,19 @@
     StopAndClearLocations();
 
     // retry and ensure constellation not used
-    list_gnss_sv_status_.clear();
+    gnss_cb_->sv_status_cbq_.reset();
 
-    location_called_count_ = 0;
+    gnss_cb_->location_cbq_.reset();
     StartAndCheckLocations(kLocationsToAwait);
 
     // Tolerate 1 less sv status to handle edge cases in reporting.
-    EXPECT_GE((int)list_gnss_sv_status_.size() + 1, kLocationsToAwait);
-    ALOGD("Observed %d GnssSvStatus, while awaiting %d Locations", (int)list_gnss_sv_status_.size(),
+    int sv_status_cbq_size = gnss_cb_->sv_status_cbq_.size();
+    EXPECT_GE(sv_status_cbq_size + 1, kLocationsToAwait);
+    ALOGD("Observed %d GnssSvStatus, while awaiting %d Locations", sv_status_cbq_size,
           kLocationsToAwait);
-    for (const auto& gnss_sv_status : list_gnss_sv_status_) {
+    for (int i = 0; i < sv_status_cbq_size; ++i) {
+        IGnssCallback::GnssSvStatus gnss_sv_status;
+        gnss_cb_->sv_status_cbq_.retrieve(gnss_sv_status, kGnssSvStatusTimeout);
         for (uint32_t iSv = 0; iSv < gnss_sv_status.numSvs; iSv++) {
             const auto& gnss_sv = gnss_sv_status.gnssSvList[iSv];
             EXPECT_FALSE((gnss_sv.constellation == source_to_blacklist.constellation) &&
@@ -465,9 +502,9 @@
  *
  * Ensure successfully injecting a location.
  */
-TEST_F(GnssHalTest, InjectBestLocation) {
+TEST_P(GnssHalTest, InjectBestLocation) {
     StartAndCheckLocations(1);
-    GnssLocation gnssLocation = last_location_;
+    GnssLocation gnssLocation = gnss_cb_->last_location_;
     CheckLocation(gnssLocation, true);
 
     auto result = gnss_hal_->injectBestLocation(gnssLocation);
@@ -484,10 +521,10 @@
  * GnssDebugValuesSanityTest:
  * Ensures that GnssDebug values make sense.
  */
-TEST_F(GnssHalTest, GnssDebugValuesSanityTest) {
+TEST_P(GnssHalTest, GnssDebugValuesSanityTest) {
     auto gnssDebug = gnss_hal_->getExtensionGnssDebug();
     ASSERT_TRUE(gnssDebug.isOk());
-    if (info_called_count_ > 0 && last_info_.yearOfHw >= 2017) {
+    if (gnss_cb_->info_cbq_.calledCount() > 0 && gnss_cb_->last_info_.yearOfHw >= 2017) {
         sp<IGnssDebug> iGnssDebug = gnssDebug;
         EXPECT_NE(iGnssDebug, nullptr);
 
diff --git a/gnss/2.0/default/Android.bp b/gnss/2.0/default/Android.bp
index 3ba89da..37de55d 100644
--- a/gnss/2.0/default/Android.bp
+++ b/gnss/2.0/default/Android.bp
@@ -25,7 +25,7 @@
         "AGnss.cpp",
         "AGnssRil.cpp",
         "Gnss.cpp",
-	"GnssBatching.cpp",
+        "GnssBatching.cpp",
         "GnssMeasurement.cpp",
         "GnssMeasurementCorrections.cpp",
         "GnssVisibilityControl.cpp",
@@ -35,9 +35,10 @@
         "libhidlbase",
         "libutils",
         "liblog",
-        "android.hardware.gnss@2.0",
         "android.hardware.gnss.measurement_corrections@1.0",
         "android.hardware.gnss.visibility_control@1.0",
+        "android.hardware.gnss@2.1",
+        "android.hardware.gnss@2.0",
         "android.hardware.gnss@1.0",
         "android.hardware.gnss@1.1",
     ],
diff --git a/gnss/2.0/default/Gnss.cpp b/gnss/2.0/default/Gnss.cpp
index 3d64fc3..09f2fc0 100644
--- a/gnss/2.0/default/Gnss.cpp
+++ b/gnss/2.0/default/Gnss.cpp
@@ -19,7 +19,6 @@
 #include "Gnss.h"
 
 #include <log/log.h>
-#include <utils/SystemClock.h>
 
 #include "AGnss.h"
 #include "AGnssRil.h"
@@ -47,24 +46,6 @@
 sp<V2_0::IGnssCallback> Gnss::sGnssCallback_2_0 = nullptr;
 sp<V1_1::IGnssCallback> Gnss::sGnssCallback_1_1 = nullptr;
 
-namespace {
-
-V2_0::GnssLocation getMockLocationV2_0() {
-    const ElapsedRealtime timestamp = {
-            .flags = ElapsedRealtimeFlags::HAS_TIMESTAMP_NS |
-                     ElapsedRealtimeFlags::HAS_TIME_UNCERTAINTY_NS,
-            .timestampNs = static_cast<uint64_t>(::android::elapsedRealtimeNano()),
-            // This is an hardcoded value indicating a 1ms of uncertainty between the two clocks.
-            // In an actual implementation provide an estimate of the synchronization uncertainty
-            // or don't set the field.
-            .timeUncertaintyNs = 1000000};
-
-    V2_0::GnssLocation location = {.v1_0 = Utils::getMockLocation(), .elapsedRealtime = timestamp};
-    return location;
-}
-
-}  // namespace
-
 Gnss::Gnss() : mMinIntervalMs(1000) {}
 
 Gnss::~Gnss() {
@@ -86,7 +67,7 @@
     mIsActive = true;
     mThread = std::thread([this]() {
         while (mIsActive == true) {
-            const auto location = getMockLocationV2_0();
+            const auto location = Utils::getMockLocationV2_0();
             this->reportLocation(location);
 
             std::this_thread::sleep_for(std::chrono::milliseconds(mMinIntervalMs));
diff --git a/gnss/2.0/default/GnssMeasurement.cpp b/gnss/2.0/default/GnssMeasurement.cpp
index 1f95ff9..d778d50 100644
--- a/gnss/2.0/default/GnssMeasurement.cpp
+++ b/gnss/2.0/default/GnssMeasurement.cpp
@@ -16,6 +16,7 @@
 #define LOG_TAG "GnssMeasurement"
 
 #include "GnssMeasurement.h"
+#include "Utils.h"
 
 #include <log/log.h>
 #include <utils/SystemClock.h>
@@ -29,6 +30,7 @@
 using GnssConstellationType = V2_0::GnssConstellationType;
 using GnssMeasurementFlags = V1_0::IGnssMeasurementCallback::GnssMeasurementFlags;
 using GnssMeasurementState = V2_0::IGnssMeasurementCallback::GnssMeasurementState;
+using Utils = common::Utils;
 
 sp<V2_0::IGnssMeasurementCallback> GnssMeasurement::sCallback = nullptr;
 
@@ -81,7 +83,7 @@
     mIsActive = true;
     mThread = std::thread([this]() {
         while (mIsActive == true) {
-            auto measurement = this->getMockMeasurement();
+            auto measurement = Utils::getMockMeasurementV2_0();
             this->reportMeasurement(measurement);
 
             std::this_thread::sleep_for(std::chrono::milliseconds(mMinIntervalMillis));
@@ -97,60 +99,6 @@
     }
 }
 
-GnssData GnssMeasurement::getMockMeasurement() {
-    V1_0::IGnssMeasurementCallback::GnssMeasurement measurement_1_0 = {
-            .flags = (uint32_t)GnssMeasurementFlags::HAS_CARRIER_FREQUENCY,
-            .svid = (int16_t)6,
-            .constellation = V1_0::GnssConstellationType::UNKNOWN,
-            .timeOffsetNs = 0.0,
-            .receivedSvTimeInNs = 8195997131077,
-            .receivedSvTimeUncertaintyInNs = 15,
-            .cN0DbHz = 30.0,
-            .pseudorangeRateMps = -484.13739013671875,
-            .pseudorangeRateUncertaintyMps = 1.0379999876022339,
-            .accumulatedDeltaRangeState = (uint32_t)V1_0::IGnssMeasurementCallback::
-                    GnssAccumulatedDeltaRangeState::ADR_STATE_UNKNOWN,
-            .accumulatedDeltaRangeM = 0.0,
-            .accumulatedDeltaRangeUncertaintyM = 0.0,
-            .carrierFrequencyHz = 1.59975e+09,
-            .multipathIndicator =
-                    V1_0::IGnssMeasurementCallback::GnssMultipathIndicator::INDICATOR_UNKNOWN};
-    V1_1::IGnssMeasurementCallback::GnssMeasurement measurement_1_1 = {.v1_0 = measurement_1_0};
-    V2_0::IGnssMeasurementCallback::GnssMeasurement measurement_2_0 = {
-            .v1_1 = measurement_1_1,
-            .codeType = "C",
-            .state = GnssMeasurementState::STATE_CODE_LOCK | GnssMeasurementState::STATE_BIT_SYNC |
-                     GnssMeasurementState::STATE_SUBFRAME_SYNC |
-                     GnssMeasurementState::STATE_TOW_DECODED |
-                     GnssMeasurementState::STATE_GLO_STRING_SYNC |
-                     GnssMeasurementState::STATE_GLO_TOD_DECODED,
-            .constellation = GnssConstellationType::GLONASS,
-    };
-
-    hidl_vec<IGnssMeasurementCallback::GnssMeasurement> measurements(1);
-    measurements[0] = measurement_2_0;
-    V1_0::IGnssMeasurementCallback::GnssClock clock = {.timeNs = 2713545000000,
-                                                       .fullBiasNs = -1226701900521857520,
-                                                       .biasNs = 0.59689998626708984,
-                                                       .biasUncertaintyNs = 47514.989972114563,
-                                                       .driftNsps = -51.757811607455452,
-                                                       .driftUncertaintyNsps = 310.64968328491528,
-                                                       .hwClockDiscontinuityCount = 1};
-
-    ElapsedRealtime timestamp = {
-            .flags = ElapsedRealtimeFlags::HAS_TIMESTAMP_NS |
-                     ElapsedRealtimeFlags::HAS_TIME_UNCERTAINTY_NS,
-            .timestampNs = static_cast<uint64_t>(::android::elapsedRealtimeNano()),
-            // This is an hardcoded value indicating a 1ms of uncertainty between the two clocks.
-            // In an actual implementation provide an estimate of the synchronization uncertainty
-            // or don't set the field.
-            .timeUncertaintyNs = 1000000};
-
-    GnssData gnssData = {
-            .measurements = measurements, .clock = clock, .elapsedRealtime = timestamp};
-    return gnssData;
-}
-
 void GnssMeasurement::reportMeasurement(const GnssData& data) {
     ALOGD("reportMeasurement()");
     std::unique_lock<std::mutex> lock(mMutex);
diff --git a/gnss/2.0/default/GnssMeasurement.h b/gnss/2.0/default/GnssMeasurement.h
index c24c00e..d8ffd59 100644
--- a/gnss/2.0/default/GnssMeasurement.h
+++ b/gnss/2.0/default/GnssMeasurement.h
@@ -59,7 +59,6 @@
    private:
     void start();
     void stop();
-    GnssData getMockMeasurement();
     void reportMeasurement(const GnssData&);
 
     static sp<IGnssMeasurementCallback> sCallback;
diff --git a/gnss/2.0/vts/functional/Android.bp b/gnss/2.0/vts/functional/Android.bp
index 278d87b..da5289d 100644
--- a/gnss/2.0/vts/functional/Android.bp
+++ b/gnss/2.0/vts/functional/Android.bp
@@ -28,6 +28,8 @@
         "android.hardware.gnss@1.0",
         "android.hardware.gnss@1.1",
         "android.hardware.gnss@2.0",
+        "android.hardware.gnss@2.1",
         "android.hardware.gnss@common-vts-lib",
     ],
+    test_suites: ["general-tests", "vts-core"],
 }
diff --git a/gnss/2.0/vts/functional/VtsHalGnssV2_0TargetTest.cpp b/gnss/2.0/vts/functional/VtsHalGnssV2_0TargetTest.cpp
index ae36c50..2c74fa3 100644
--- a/gnss/2.0/vts/functional/VtsHalGnssV2_0TargetTest.cpp
+++ b/gnss/2.0/vts/functional/VtsHalGnssV2_0TargetTest.cpp
@@ -15,15 +15,15 @@
  */
 #define LOG_TAG "VtsHalGnssV2_0TargetTest"
 
-#include <VtsHalHidlTargetTestBase.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 
 #include "gnss_hal_test.h"
 
-int main(int argc, char** argv) {
-    ::testing::AddGlobalTestEnvironment(GnssHidlEnvironment::Instance());
-    ::testing::InitGoogleTest(&argc, argv);
-    GnssHidlEnvironment::Instance()->init(&argc, argv);
-    int status = RUN_ALL_TESTS();
-    ALOGI("Test result = %d", status);
-    return status;
-}
+using android::hardware::gnss::V2_0::IGnss;
+
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, GnssHalTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IGnss::descriptor)),
+        android::hardware::PrintInstanceNameToString);
\ No newline at end of file
diff --git a/gnss/2.0/vts/functional/gnss_hal_test.cpp b/gnss/2.0/vts/functional/gnss_hal_test.cpp
index 14ae43c..b3a3203 100644
--- a/gnss/2.0/vts/functional/gnss_hal_test.cpp
+++ b/gnss/2.0/vts/functional/gnss_hal_test.cpp
@@ -16,16 +16,20 @@
 
 #define LOG_TAG "GnssHalTest"
 
+#include <android/hidl/manager/1.2/IServiceManager.h>
 #include <gnss_hal_test.h>
+#include <gtest/gtest.h>
+#include <hidl/ServiceManagement.h>
 #include <chrono>
 #include "Utils.h"
 
+using ::android::hardware::hidl_string;
+
 using ::android::hardware::gnss::common::Utils;
 
 // Implementations for the main test class for GNSS HAL
 void GnssHalTest::SetUp() {
-    gnss_hal_ = ::testing::VtsHalHidlTargetTestBase::getService<IGnss>(
-        GnssHidlEnvironment::Instance()->getServiceName<IGnss>());
+    gnss_hal_ = IGnss::getService(GetParam());
     ASSERT_NE(gnss_hal_, nullptr);
 
     SetUpGnssCallback();
@@ -98,7 +102,6 @@
 
     EXPECT_TRUE(result.isOk());
     EXPECT_TRUE(result);
-
     /*
      * GnssLocationProvider support of AGPS SUPL & XtraDownloader is not available in VTS,
      * so allow time to demodulate ephemeris over the air.
@@ -147,6 +150,27 @@
     }
 }
 
+bool GnssHalTest::IsGnssHalVersion_2_0() const {
+    using ::android::hidl::manager::V1_2::IServiceManager;
+    sp<IServiceManager> manager = ::android::hardware::defaultServiceManager1_2();
+
+    bool hasGnssHalVersion_2_0 = false;
+    manager->listManifestByInterface(
+            "android.hardware.gnss@2.0::IGnss",
+            [&hasGnssHalVersion_2_0](const hidl_vec<hidl_string>& registered) {
+                hasGnssHalVersion_2_0 = registered.size() != 0;
+            });
+
+    bool hasGnssHalVersion_2_1 = false;
+    manager->listManifestByInterface(
+            "android.hardware.gnss@2.1::IGnss",
+            [&hasGnssHalVersion_2_1](const hidl_vec<hidl_string>& registered) {
+                hasGnssHalVersion_2_1 = registered.size() != 0;
+            });
+
+    return hasGnssHalVersion_2_0 && !hasGnssHalVersion_2_1;
+}
+
 GnssHalTest::GnssCallback::GnssCallback()
     : info_cbq_("system_info"),
       name_cbq_("name"),
diff --git a/gnss/2.0/vts/functional/gnss_hal_test.h b/gnss/2.0/vts/functional/gnss_hal_test.h
index 90a7866..55dc1bc 100644
--- a/gnss/2.0/vts/functional/gnss_hal_test.h
+++ b/gnss/2.0/vts/functional/gnss_hal_test.h
@@ -18,18 +18,15 @@
 #define GNSS_HAL_TEST_H_
 
 #include <android/hardware/gnss/2.0/IGnss.h>
-#include <VtsHalHidlTargetTestBase.h>
-#include <VtsHalHidlTargetTestEnvBase.h>
+#include "GnssCallbackEventQueue.h"
 
-#include <condition_variable>
-#include <deque>
-#include <list>
-#include <mutex>
+#include <gtest/gtest.h>
 
 using android::hardware::hidl_vec;
 using android::hardware::Return;
 using android::hardware::Void;
 
+using android::hardware::gnss::common::GnssCallbackEventQueue;
 using android::hardware::gnss::measurement_corrections::V1_0::IMeasurementCorrectionsCallback;
 using android::hardware::gnss::V1_0::GnssLocationFlags;
 using android::hardware::gnss::V2_0::IGnss;
@@ -48,72 +45,13 @@
 
 #define TIMEOUT_SEC 2  // for basic commands/responses
 
-// Test environment for GNSS HIDL HAL.
-class GnssHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
-   public:
-    // get the test environment singleton
-    static GnssHidlEnvironment* Instance() {
-        static GnssHidlEnvironment* instance = new GnssHidlEnvironment;
-        return instance;
-    }
-
-    virtual void registerTestServices() override { registerTestService<IGnss>(); }
-
-   private:
-    GnssHidlEnvironment() {}
-};
-
 // The main test class for GNSS HAL.
-class GnssHalTest : public ::testing::VtsHalHidlTargetTestBase {
-   public:
+class GnssHalTest : public testing::TestWithParam<std::string> {
+  public:
     virtual void SetUp() override;
 
     virtual void TearDown() override;
 
-    /* Producer/consumer queue for storing/retrieving callback events from GNSS HAL */
-    template <class T>
-    class CallbackQueue {
-      public:
-        CallbackQueue(const std::string& name) : name_(name), called_count_(0){};
-        ~CallbackQueue() { reset(); }
-
-        /* Adds callback event to the end of the queue. */
-        void store(const T& event);
-
-        /*
-         * Removes the callack event at the front of the queue, stores it in event parameter
-         * and returns true. Returns false on timeout and event is not populated.
-         */
-        bool retrieve(T& event, int timeout_seconds);
-
-        /*
-         * Removes parameter count number of callack events at the front of the queue, stores
-         * them in event_list parameter and returns the number of events retrieved. Waits up to
-         * timeout_seconds to retrieve each event. If timeout occurs, it returns the number of
-         * items retrieved which will be less than count.
-         */
-        int retrieve(list<T>& event_list, int count, int timeout_seconds);
-
-        /* Returns the number of events pending to be retrieved from the callback event queue. */
-        int size() const;
-
-        /* Returns the number of callback events received since last reset(). */
-        int calledCount() const;
-
-        /* Clears the callback event queue and resets the calledCount() to 0. */
-        void reset();
-
-      private:
-        CallbackQueue(const CallbackQueue&) = delete;
-        CallbackQueue& operator=(const CallbackQueue&) = delete;
-
-        std::string name_;
-        int called_count_;
-        mutable std::recursive_mutex mtx_;
-        std::condition_variable_any cv_;
-        std::deque<T> events_;
-    };
-
     /* Callback class for data & Event. */
     class GnssCallback : public IGnssCallback_2_0 {
       public:
@@ -122,11 +60,11 @@
         uint32_t last_capabilities_;
         GnssLocation_2_0 last_location_;
 
-        CallbackQueue<IGnssCallback_1_0::GnssSystemInfo> info_cbq_;
-        CallbackQueue<android::hardware::hidl_string> name_cbq_;
-        CallbackQueue<uint32_t> capabilities_cbq_;
-        CallbackQueue<GnssLocation_2_0> location_cbq_;
-        CallbackQueue<hidl_vec<IGnssCallback_2_0::GnssSvInfo>> sv_info_list_cbq_;
+        GnssCallbackEventQueue<IGnssCallback_1_0::GnssSystemInfo> info_cbq_;
+        GnssCallbackEventQueue<android::hardware::hidl_string> name_cbq_;
+        GnssCallbackEventQueue<uint32_t> capabilities_cbq_;
+        GnssCallbackEventQueue<GnssLocation_2_0> location_cbq_;
+        GnssCallbackEventQueue<hidl_vec<IGnssCallback_2_0::GnssSvInfo>> sv_info_list_cbq_;
 
         GnssCallback();
         virtual ~GnssCallback() = default;
@@ -169,7 +107,7 @@
     /* Callback class for GnssMeasurement. */
     class GnssMeasurementCallback : public IGnssMeasurementCallback_2_0 {
       public:
-        CallbackQueue<IGnssMeasurementCallback_2_0::GnssData> measurement_cbq_;
+        GnssCallbackEventQueue<IGnssMeasurementCallback_2_0::GnssData> measurement_cbq_;
 
         GnssMeasurementCallback() : measurement_cbq_("measurement"){};
         virtual ~GnssMeasurementCallback() = default;
@@ -192,7 +130,7 @@
     class GnssMeasurementCorrectionsCallback : public IMeasurementCorrectionsCallback {
       public:
         uint32_t last_capabilities_;
-        CallbackQueue<uint32_t> capabilities_cbq_;
+        GnssCallbackEventQueue<uint32_t> capabilities_cbq_;
 
         GnssMeasurementCorrectionsCallback() : capabilities_cbq_("capabilities"){};
         virtual ~GnssMeasurementCorrectionsCallback() = default;
@@ -243,6 +181,12 @@
     void StopAndClearLocations();
 
     /*
+     * IsGnssHalVersion_2_0:
+     * returns  true if the GNSS HAL version is exactly 2.0.
+     */
+    bool IsGnssHalVersion_2_0() const;
+
+    /*
      * SetPositionMode:
      * Helper function to set positioning mode and verify output
      */
@@ -252,61 +196,4 @@
     sp<GnssCallback> gnss_cb_;   // Primary callback interface
 };
 
-template <class T>
-void GnssHalTest::CallbackQueue<T>::store(const T& event) {
-    std::unique_lock<std::recursive_mutex> lock(mtx_);
-    events_.push_back(event);
-    ++called_count_;
-    lock.unlock();
-    cv_.notify_all();
-}
-
-template <class T>
-bool GnssHalTest::CallbackQueue<T>::retrieve(T& event, int timeout_seconds) {
-    std::unique_lock<std::recursive_mutex> lock(mtx_);
-    cv_.wait_for(lock, std::chrono::seconds(timeout_seconds), [&] { return !events_.empty(); });
-    if (events_.empty()) {
-        return false;
-    }
-    event = events_.front();
-    events_.pop_front();
-    return true;
-}
-
-template <class T>
-int GnssHalTest::CallbackQueue<T>::retrieve(list<T>& event_list, int count, int timeout_seconds) {
-    for (int i = 0; i < count; ++i) {
-        T event;
-        if (!retrieve(event, timeout_seconds)) {
-            return i;
-        }
-        event_list.push_back(event);
-    }
-
-    return count;
-}
-
-template <class T>
-int GnssHalTest::CallbackQueue<T>::size() const {
-    std::unique_lock<std::recursive_mutex> lock(mtx_);
-    return events_.size();
-}
-
-template <class T>
-int GnssHalTest::CallbackQueue<T>::calledCount() const {
-    std::unique_lock<std::recursive_mutex> lock(mtx_);
-    return called_count_;
-}
-
-template <class T>
-void GnssHalTest::CallbackQueue<T>::reset() {
-    std::unique_lock<std::recursive_mutex> lock(mtx_);
-    if (!events_.empty()) {
-        ALOGW("%u unprocessed events discarded in callback queue %s", (unsigned int)events_.size(),
-              name_.c_str());
-    }
-    events_.clear();
-    called_count_ = 0;
-}
-
 #endif  // GNSS_HAL_TEST_H_
diff --git a/gnss/2.0/vts/functional/gnss_hal_test_cases.cpp b/gnss/2.0/vts/functional/gnss_hal_test_cases.cpp
index 39736cc..53f5b9e 100644
--- a/gnss/2.0/vts/functional/gnss_hal_test_cases.cpp
+++ b/gnss/2.0/vts/functional/gnss_hal_test_cases.cpp
@@ -16,10 +16,11 @@
 
 #define LOG_TAG "GnssHalTestCases"
 
-#include <VtsHalHidlTargetTestBase.h>
 #include <gnss_hal_test.h>
 #include "Utils.h"
 
+#include <gtest/gtest.h>
+
 using android::hardware::hidl_string;
 using android::hardware::hidl_vec;
 
@@ -51,13 +52,13 @@
  *
  * Empty test fixture to verify basic Setup & Teardown
  */
-TEST_F(GnssHalTest, SetupTeardownCreateCleanup) {}
+TEST_P(GnssHalTest, SetupTeardownCreateCleanup) {}
 
 /*
  * TestGnssMeasurementExtension:
  * Gets the GnssMeasurementExtension and verifies that it returns an actual extension.
  */
-TEST_F(GnssHalTest, TestGnssMeasurementExtension) {
+TEST_P(GnssHalTest, TestGnssMeasurementExtension) {
     auto gnssMeasurement_2_0 = gnss_hal_->getExtensionGnssMeasurement_2_0();
     auto gnssMeasurement_1_1 = gnss_hal_->getExtensionGnssMeasurement_1_1();
     auto gnssMeasurement_1_0 = gnss_hal_->getExtensionGnssMeasurement();
@@ -80,7 +81,7 @@
  * The GNSS HAL 2.0 implementation must support @2.0::IGnssConfiguration interface due to
  * the deprecation of some methods in @1.0::IGnssConfiguration interface.
  */
-TEST_F(GnssHalTest, TestGnssConfigurationExtension) {
+TEST_P(GnssHalTest, TestGnssConfigurationExtension) {
     auto gnssConfiguration = gnss_hal_->getExtensionGnssConfiguration_2_0();
     ASSERT_TRUE(gnssConfiguration.isOk());
     sp<IGnssConfiguration_2_0> iGnssConfiguration = gnssConfiguration;
@@ -96,7 +97,7 @@
  * TestGnssConfiguration_setSuplEs_Deprecation:
  * Calls setSuplEs and verifies that it returns false.
  */
-TEST_F(GnssHalTest, TestGnssConfiguration_setSuplEs_Deprecation) {
+TEST_P(GnssHalTest, TestGnssConfiguration_setSuplEs_Deprecation) {
     auto gnssConfiguration = gnss_hal_->getExtensionGnssConfiguration_2_0();
     ASSERT_TRUE(gnssConfiguration.isOk());
     sp<IGnssConfiguration_2_0> iGnssConfiguration = gnssConfiguration;
@@ -111,7 +112,7 @@
  * TestGnssConfiguration_setGpsLock_Deprecation:
  * Calls setGpsLock and verifies that it returns false.
  */
-TEST_F(GnssHalTest, TestGnssConfiguration_setGpsLock_Deprecation) {
+TEST_P(GnssHalTest, TestGnssConfiguration_setGpsLock_Deprecation) {
     auto gnssConfiguration = gnss_hal_->getExtensionGnssConfiguration_2_0();
     ASSERT_TRUE(gnssConfiguration.isOk());
     sp<IGnssConfiguration_2_0> iGnssConfiguration = gnssConfiguration;
@@ -130,7 +131,7 @@
  * @2.0::IAGnssRil interface due to the deprecation of framework network API methods needed
  * to support the @1.0::IAGnssRil interface.
  */
-TEST_F(GnssHalTest, TestAGnssRilExtension) {
+TEST_P(GnssHalTest, TestAGnssRilExtension) {
     auto agnssRil_2_0 = gnss_hal_->getExtensionAGnssRil_2_0();
     ASSERT_TRUE(agnssRil_2_0.isOk());
     sp<IAGnssRil_2_0> iAGnssRil_2_0 = agnssRil_2_0;
@@ -148,7 +149,7 @@
  * 1. Updates GNSS HAL that a network has connected.
  * 2. Updates GNSS HAL that network has disconnected.
  */
-TEST_F(GnssHalTest, TestAGnssRil_UpdateNetworkState_2_0) {
+TEST_P(GnssHalTest, TestAGnssRil_UpdateNetworkState_2_0) {
     auto agnssRil = gnss_hal_->getExtensionAGnssRil_2_0();
     ASSERT_TRUE(agnssRil.isOk());
     sp<IAGnssRil_2_0> iAGnssRil = agnssRil;
@@ -180,7 +181,11 @@
  * 2. constellation is valid.
  * 3. state is valid.
  */
-TEST_F(GnssHalTest, TestGnssMeasurementFields) {
+TEST_P(GnssHalTest, TestGnssMeasurementFields) {
+    if (!IsGnssHalVersion_2_0()) {
+        ALOGI("Test GnssMeasurementFields skipped. GNSS HAL version is greater than 2.0.");
+        return;
+    }
     const int kFirstGnssMeasurementTimeoutSeconds = 10;
 
     auto gnssMeasurement = gnss_hal_->getExtensionGnssMeasurement_2_0();
@@ -234,7 +239,7 @@
  * @2.0::IAGnss interface due to the deprecation of framework network API methods needed
  * to support the @1.0::IAGnss interface.
  */
-TEST_F(GnssHalTest, TestAGnssExtension) {
+TEST_P(GnssHalTest, TestAGnssExtension) {
     auto agnss_2_0 = gnss_hal_->getExtensionAGnss_2_0();
     ASSERT_TRUE(agnss_2_0.isOk());
     sp<IAGnss_2_0> iAGnss_2_0 = agnss_2_0;
@@ -258,7 +263,7 @@
  * TestGnssNiExtension_Deprecation:
  * Gets the @1.0::IGnssNi extension and verifies that it is a nullptr.
  */
-TEST_F(GnssHalTest, TestGnssNiExtension_Deprecation) {
+TEST_P(GnssHalTest, TestGnssNiExtension_Deprecation) {
     // Verify IGnssNi 1.0 is not supported.
     auto gnssNi = gnss_hal_->getExtensionGnssNi();
     ASSERT_TRUE(!gnssNi.isOk() || ((sp<IGnssNi>)gnssNi) == nullptr);
@@ -269,7 +274,7 @@
  * Gets the GnssVisibilityControlExtension and if it is not null, verifies that it supports
  * the gnss.visibility_control@1.0::IGnssVisibilityControl interface by invoking a method.
  */
-TEST_F(GnssHalTest, TestGnssVisibilityControlExtension) {
+TEST_P(GnssHalTest, TestGnssVisibilityControlExtension) {
     auto gnssVisibilityControl = gnss_hal_->getExtensionVisibilityControl();
     ASSERT_TRUE(gnssVisibilityControl.isOk());
     sp<IGnssVisibilityControl> iGnssVisibilityControl = gnssVisibilityControl;
@@ -290,7 +295,13 @@
  * capabilities are reported and the mandatory LOS_SATS or the EXCESS_PATH_LENGTH
  * capability flag is set.
  */
-TEST_F(GnssHalTest, TestGnssMeasurementCorrectionsCapabilities) {
+TEST_P(GnssHalTest, TestGnssMeasurementCorrectionsCapabilities) {
+    if (!IsGnssHalVersion_2_0()) {
+        ALOGI("Test GnssMeasurementCorrectionsCapabilities skipped. GNSS HAL version is greater "
+              "than 2.0.");
+        return;
+    }
+
     if (!(gnss_cb_->last_capabilities_ & IGnssCallback::Capabilities::MEASUREMENT_CORRECTIONS)) {
         return;
     }
@@ -318,7 +329,7 @@
  * If measurement corrections capability is supported, verifies that it supports the
  * gnss.measurement_corrections@1.0::IMeasurementCorrections interface by invoking a method.
  */
-TEST_F(GnssHalTest, TestGnssMeasurementCorrections) {
+TEST_P(GnssHalTest, TestGnssMeasurementCorrections) {
     if (!(gnss_cb_->last_capabilities_ & IGnssCallback::Capabilities::MEASUREMENT_CORRECTIONS)) {
         return;
     }
@@ -348,7 +359,7 @@
  * Sets a GnssMeasurementCallback, waits for a GnssData object, and verifies the flags in member
  * elapsedRealitme are valid.
  */
-TEST_F(GnssHalTest, TestGnssDataElapsedRealtimeFlags) {
+TEST_P(GnssHalTest, TestGnssDataElapsedRealtimeFlags) {
     const int kFirstGnssMeasurementTimeoutSeconds = 10;
 
     auto gnssMeasurement = gnss_hal_->getExtensionGnssMeasurement_2_0();
@@ -383,7 +394,7 @@
     iGnssMeasurement->close();
 }
 
-TEST_F(GnssHalTest, TestGnssLocationElapsedRealtime) {
+TEST_P(GnssHalTest, TestGnssLocationElapsedRealtime) {
     StartAndCheckFirstLocation();
 
     ASSERT_TRUE((int)gnss_cb_->last_location_.elapsedRealtime.flags <=
@@ -399,7 +410,7 @@
 }
 
 // This test only verify that injectBestLocation_2_0 does not crash.
-TEST_F(GnssHalTest, TestInjectBestLocation_2_0) {
+TEST_P(GnssHalTest, TestInjectBestLocation_2_0) {
     StartAndCheckFirstLocation();
     gnss_hal_->injectBestLocation_2_0(gnss_cb_->last_location_);
     StopAndClearLocations();
@@ -410,7 +421,7 @@
  * Gets the @2.0::IGnssBatching extension and verifies that it doesn't return an error. Support
  * for this interface is optional.
  */
-TEST_F(GnssHalTest, TestGnssBatchingExtension) {
+TEST_P(GnssHalTest, TestGnssBatchingExtension) {
     auto gnssBatching_2_0 = gnss_hal_->getExtensionGnssBatching_2_0();
     ASSERT_TRUE(gnssBatching_2_0.isOk());
 }
@@ -422,7 +433,7 @@
  * NO_LOCATION_PERIOD_SEC and verfiy that no location is received. Also perform validity checks on
  * each received location.
  */
-TEST_F(GnssHalTest, GetLocationLowPower) {
+TEST_P(GnssHalTest, GetLocationLowPower) {
     if (!(gnss_cb_->last_capabilities_ & IGnssCallback::Capabilities::LOW_POWER_MODE)) {
         ALOGI("Test GetLocationLowPower skipped. LOW_POWER_MODE capability not supported.");
         return;
@@ -453,18 +464,18 @@
         // ensure that no location is received yet
 
         gnss_cb_->location_cbq_.retrieve(gnss_cb_->last_location_, kNoLocationPeriodSec);
-        const int locationCalledCount = gnss_cb_->location_cbq_.calledCount();
+        const int location_called_count = gnss_cb_->location_cbq_.calledCount();
 
         // Tolerate (ignore) one extra location right after the first one
         // to handle startup edge case scheduling limitations in some implementations
-        if ((i == 1) && (locationCalledCount == 2)) {
+        if ((i == 1) && (location_called_count == 2)) {
             CheckLocation(gnss_cb_->last_location_, true);
             continue;  // restart the quiet wait period after this too-fast location
         }
-        EXPECT_LE(locationCalledCount, i);
-        if (locationCalledCount != i) {
-            ALOGW("GetLocationLowPower test - not enough locations received. %d vs. %d expected ",
-                  locationCalledCount, i);
+        EXPECT_LE(location_called_count, i);
+        if (location_called_count != i) {
+            ALOGW("GetLocationLowPower test - too many locations received. %d vs. %d expected ",
+                  location_called_count, i);
         }
 
         if (!gnss_cb_->location_cbq_.retrieve(
@@ -513,7 +524,7 @@
  *         or a source with constellation == UNKNOWN if none are found sufficient times
  */
 IGnssConfiguration_1_1::BlacklistedSource FindStrongFrequentNonGpsSource(
-        const list<hidl_vec<IGnssCallback_2_0::GnssSvInfo>>& sv_info_lists,
+        const std::list<hidl_vec<IGnssCallback_2_0::GnssSvInfo>>& sv_info_lists,
         const int min_observations) {
     struct ComparableBlacklistedSource {
         IGnssConfiguration_1_1::BlacklistedSource id;
@@ -599,7 +610,12 @@
  * 5b) Retry a few times, in case GNSS search strategy takes a while to reacquire even the
  * formerly strongest satellite
  */
-TEST_F(GnssHalTest, BlacklistIndividualSatellites) {
+TEST_P(GnssHalTest, BlacklistIndividualSatellites) {
+    if (!IsGnssHalVersion_2_0()) {
+        ALOGI("Test BlacklistIndividualSatellites skipped. GNSS HAL version is greater than 2.0.");
+        return;
+    }
+
     if (!(gnss_cb_->last_capabilities_ & IGnssCallback::Capabilities::SATELLITE_BLACKLIST)) {
         ALOGI("Test BlacklistIndividualSatellites skipped. SATELLITE_BLACKLIST capability"
               " not supported.");
@@ -626,7 +642,7 @@
      */
 
     const int kGnssSvStatusTimeout = 2;
-    list<hidl_vec<IGnssCallback_2_0::GnssSvInfo>> sv_info_lists;
+    std::list<hidl_vec<IGnssCallback_2_0::GnssSvInfo>> sv_info_lists;
     int count = gnss_cb_->sv_info_list_cbq_.retrieve(sv_info_lists, sv_info_list_cbq_size,
                                                      kGnssSvStatusTimeout);
     ASSERT_EQ(count, sv_info_list_cbq_size);
@@ -744,7 +760,12 @@
  * GnssStatus does not use any constellation but GPS.
  * 4a & b) Clean up by turning off location, and send in empty blacklist.
  */
-TEST_F(GnssHalTest, BlacklistConstellation) {
+TEST_P(GnssHalTest, BlacklistConstellation) {
+    if (!IsGnssHalVersion_2_0()) {
+        ALOGI("Test BlacklistConstellation skipped. GNSS HAL version is greater than 2.0.");
+        return;
+    }
+
     if (!(gnss_cb_->last_capabilities_ & IGnssCallback::Capabilities::SATELLITE_BLACKLIST)) {
         ALOGI("Test BlacklistConstellation skipped. SATELLITE_BLACKLIST capability not supported.");
         return;
diff --git a/gnss/2.1/Android.bp b/gnss/2.1/Android.bp
new file mode 100644
index 0000000..7efc4a6
--- /dev/null
+++ b/gnss/2.1/Android.bp
@@ -0,0 +1,27 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.gnss@2.1",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "types.hal",
+        "IGnss.hal",
+        "IGnssCallback.hal",
+        "IGnssMeasurement.hal",
+        "IGnssMeasurementCallback.hal",
+        "IGnssConfiguration.hal",
+    ],
+    interfaces: [
+        "android.hardware.gnss.measurement_corrections@1.1",
+        "android.hardware.gnss.measurement_corrections@1.0",
+        "android.hardware.gnss.visibility_control@1.0",
+        "android.hardware.gnss@1.0",
+        "android.hardware.gnss@1.1",
+        "android.hardware.gnss@2.0",
+        "android.hidl.base@1.0",
+    ],
+    gen_java: true,
+}
diff --git a/gnss/2.1/IGnss.hal b/gnss/2.1/IGnss.hal
new file mode 100644
index 0000000..ce37647
--- /dev/null
+++ b/gnss/2.1/IGnss.hal
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.gnss@2.1;
+
+import android.hardware.gnss.measurement_corrections@1.1::IMeasurementCorrections;
+import @2.0::IGnss;
+
+import IGnssCallback;
+import IGnssMeasurement;
+import IGnssConfiguration;
+
+/**
+ * Represents the standard GNSS (Global Navigation Satellite System) interface.
+ */
+interface IGnss extends @2.0::IGnss {
+    /**
+     * Opens the interface and provides the callback routines to the implementation of this
+     * interface.
+     *
+     * The framework calls this method to instruct the GPS engine to prepare for serving requests
+     * from the framework. The GNSS HAL implementation must respond to all GNSS requests from the
+     * framework upon successful return from this method until cleanup() method is called to
+     * close this interface.
+     *
+     * @param callback Callback interface for IGnss.
+     *
+     * @return success Returns true on success.
+     */
+    setCallback_2_1(IGnssCallback callback) generates (bool success);
+
+    /**
+     * This method returns the IGnssMeasurement interface.
+     *
+     * At least one of getExtensionGnssMeasurement(), getExtensionGnssMeasurement_1_1(),
+     * getExtensionGnssMeasurement_2_0(), and getExtensionGnssMeasurement_2_1() methods must return
+     * a non-null handle, and the other methods must return nullptr.
+     *
+     * @return gnssMeasurementIface Handle to the IGnssMeasurement interface.
+     */
+    getExtensionGnssMeasurement_2_1() generates (IGnssMeasurement gnssMeasurementIface);
+
+    /**
+     * This method returns the IGnssConfiguration interface.
+     *
+     * At least one of getExtensionGnssConfiguration(), getExtensionGnssConfiguration_1_1(),
+     * getExtensionGnssConfiguration_2_0(), and getExtensionGnssConfiguration_2_1() methods must
+     * return a non-null handle, and the other methods must return nullptr.
+     *
+     * @return gnssConfigurationIface Handle to the IGnssConfiguration interface.
+     */
+    getExtensionGnssConfiguration_2_1() generates (IGnssConfiguration gnssConfigurationIface);
+
+    /**
+     * This method returns the IMeasurementCorrections interface.
+     *
+     * Both getExtensionMeasurementCorrections and getExtensionMeasurementCorrections_1_1 must
+     * return non-null. Both methods can return the same V1.1 IMeasurementCorrections object.
+     *
+     * @return measurementCorrectionsIface Handle to the IMeasurementCorrections interface.
+     */
+     getExtensionMeasurementCorrections_1_1() generates (IMeasurementCorrections measurementCorrectionsIface);
+};
\ No newline at end of file
diff --git a/gnss/2.1/IGnssCallback.hal b/gnss/2.1/IGnssCallback.hal
new file mode 100644
index 0000000..da70742
--- /dev/null
+++ b/gnss/2.1/IGnssCallback.hal
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.gnss@2.1;
+
+import @2.0::IGnssCallback;
+
+/**
+ * This interface is required for the HAL to communicate certain information
+ * like status and location info back to the platform, the platform implements
+ * the interfaces and passes a handle to the HAL.
+ */
+interface IGnssCallback extends @2.0::IGnssCallback {
+
+    /** Extends a GnssSvInfo, adding a basebandCN0DbHz. */
+    struct GnssSvInfo {
+        /**
+         * GNSS satellite information for a single satellite and frequency.
+         */
+        @2.0::IGnssCallback.GnssSvInfo v2_0;
+
+        /**
+         * Baseband Carrier-to-noise density in dB-Hz, typically in the range [0, 63]. It contains
+         * the measured C/N0 value for the signal measured at the baseband.
+         *
+         * This is typically a few dB weaker than the value estimated for C/N0 at the antenna port,
+         * which is reported in cN0DbHz.
+         *
+         * If a signal has separate components (e.g. Pilot and Data channels) and the receiver only
+         * processes one of the components, then the reported basebandCN0DbHz reflects only the
+         * component that is processed.
+         *
+         * This value is mandatory. Like cN0DbHz, it may be reported as 0 for satellites being
+         * reported that may be searched for, but not yet tracked.
+         */
+        double basebandCN0DbHz;
+    };
+
+    /**
+     * Callback for the HAL to pass a vector of GnssSvInfo back to the client.
+     *
+     * @param svInfoList SV info list information from HAL.
+     */
+    gnssSvStatusCb_2_1(vec<GnssSvInfo> svInfoList);
+};
diff --git a/gnss/2.1/IGnssConfiguration.hal b/gnss/2.1/IGnssConfiguration.hal
new file mode 100644
index 0000000..8360ba9
--- /dev/null
+++ b/gnss/2.1/IGnssConfiguration.hal
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.gnss@2.1;
+
+import @2.0::IGnssConfiguration;
+import @2.0::GnssConstellationType;
+
+/**
+ * Extended interface for GNSS Configuration support.
+ */
+interface IGnssConfiguration extends @2.0::IGnssConfiguration {
+    /**
+     * Represents a blacklisted source, updating the GnssConstellationType to 2.0, which supports
+     * IRNSS.
+     */
+    struct BlacklistedSource {
+        /**
+         * Defines the constellation of the given satellite(s).
+         */
+        GnssConstellationType constellation;
+
+        /**
+         * Satellite (space vehicle) ID number, as defined in GnssSvInfo::svid
+         *
+         * Or 0 to blacklist all svid's for the specified constellation
+         */
+        int16_t svid;
+    };
+
+    /**
+     * Injects a vector of BlacklistedSource(s) which the HAL must not use to calculate the
+     * GNSS location output.
+     *
+     * The superset of all satellite sources provided, including wildcards, in the latest call
+     * to this method, is the set of satellites sources that must not be used in calculating
+     * location.
+     *
+     * All measurements from the specified satellites, across frequency bands, are blacklisted
+     * together.
+     *
+     * If this method is never called after the IGnssConfiguration.hal connection is made on boot,
+     * or is called with an empty vector, then no satellites are to be blacklisted as a result of
+     * this API.
+     *
+     * This blacklist must be considered as an additional source of which satellites
+     * should not be trusted for location on top of existing sources of similar information
+     * such as satellite broadcast health being unhealthy and measurement outlier removal.
+     *
+     * @param blacklist The BlacklistedSource(s) of satellites the HAL must not use.
+     *
+     * @return success Whether the HAL accepts and abides by the provided blacklist.
+     */
+    setBlacklist_2_1(vec<BlacklistedSource> blacklist) generates (bool success);
+};
\ No newline at end of file
diff --git a/gnss/2.1/IGnssMeasurement.hal b/gnss/2.1/IGnssMeasurement.hal
new file mode 100644
index 0000000..d2c76e6
--- /dev/null
+++ b/gnss/2.1/IGnssMeasurement.hal
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.gnss@2.1;
+
+import @1.0::IGnssMeasurement;
+import @1.1::IGnssMeasurement;
+import @2.0::IGnssMeasurement;
+import IGnssMeasurementCallback;
+
+/**
+ * Extended interface for GNSS Measurements support.
+ */
+interface IGnssMeasurement extends @2.0::IGnssMeasurement {
+
+    /**
+     * Initializes the interface and registers the callback routines with the HAL. After a
+     * successful call to 'setCallback_2_1' the HAL must begin to provide updates at an average
+     * output rate of 1Hz (occasional intra-measurement time offsets in the range from 0-2000msec
+     * can be tolerated.)
+     *
+     * @param callback Handle to GnssMeasurement callback interface.
+     * @param enableFullTracking If true, GNSS chipset must switch off duty cycling. In such mode
+     *     no clock discontinuities are expected and, when supported, carrier phase should be
+     *     continuous in good signal conditions. All non-blacklisted, healthy constellations,
+     *     satellites and frequency bands that the chipset supports must be reported in this mode.
+     *     The GNSS chipset is allowed to consume more power in this mode. If false, API must behave
+     *     as in HAL V1_0, optimizing power via duty cycling, constellations and frequency limits,
+     *     etc.
+     *
+     * @return initRet Returns SUCCESS if successful. Returns ERROR_ALREADY_INIT if a callback has
+     *     already been registered without a corresponding call to 'close'. Returns ERROR_GENERIC
+     *     for any other error. The HAL must not generate any other updates upon returning this
+     *     error code.
+     */
+    setCallback_2_1(IGnssMeasurementCallback callback, bool enableFullTracking)
+         generates (GnssMeasurementStatus initRet);
+};
diff --git a/gnss/2.1/IGnssMeasurementCallback.hal b/gnss/2.1/IGnssMeasurementCallback.hal
new file mode 100644
index 0000000..0385abd
--- /dev/null
+++ b/gnss/2.1/IGnssMeasurementCallback.hal
@@ -0,0 +1,182 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.gnss@2.1;
+
+import @1.0::IGnssMeasurementCallback;
+import @2.0::IGnssMeasurementCallback;
+import @2.0::ElapsedRealtime;
+import GnssSignalType;
+
+/** The callback interface to report measurements from the HAL. */
+interface IGnssMeasurementCallback extends @2.0::IGnssMeasurementCallback {
+
+    /**
+     * Flags to indicate what fields in GnssMeasurement are valid.
+     */
+    enum GnssMeasurementFlags : uint32_t {
+        /** A valid 'snr' is stored in the data structure. */
+        HAS_SNR                           = 1 << 0,
+        /** A valid 'carrier frequency' is stored in the data structure. */
+        HAS_CARRIER_FREQUENCY             = 1 << 9,
+        /** A valid 'carrier cycles' is stored in the data structure. */
+        HAS_CARRIER_CYCLES                = 1 << 10,
+        /** A valid 'carrier phase' is stored in the data structure. */
+        HAS_CARRIER_PHASE                 = 1 << 11,
+        /** A valid 'carrier phase uncertainty' is stored in the data structure. */
+        HAS_CARRIER_PHASE_UNCERTAINTY     = 1 << 12,
+        /** A valid automatic gain control is stored in the data structure. */
+        HAS_AUTOMATIC_GAIN_CONTROL        = 1 << 13,
+        /** A valid receiver inter-signal bias is stored in the data structure. */
+        HAS_RECEIVER_ISB                  = 1 << 16,
+        /** A valid receiver inter-signal bias uncertainty is stored in the data structure. */
+        HAS_RECEIVER_ISB_UNCERTAINTY      = 1 << 17,
+        /** A valid satellite inter-signal bias is stored in the data structure. */
+        HAS_SATELLITE_ISB                 = 1 << 18,
+        /** A valid satellite inter-signal bias uncertainty is stored in the data structure. */
+        HAS_SATELLITE_ISB_UNCERTAINTY     = 1 << 19
+    };
+
+
+    /**
+     * Extends a GNSS Measurement, adding basebandCN0DbHz, GnssMeasurementFlags,
+     * receiverInterSignalBiasNs, receiverInterSignalBiasUncertaintyNs, satelliteInterSignalBiasNs
+     * and satelliteInterSignalBiasUncertaintyNs.
+     */
+    struct GnssMeasurement {
+        /**
+         * GNSS measurement information for a single satellite and frequency, as in the 2.0 version
+         * of the HAL.
+         *
+         * In this version of the HAL, the field 'flags' in the v2_0.v1_1.v1_0 struct is deprecated,
+         * and is no longer used by the framework. The GNSS measurement flags are instead reported
+         * in @2.1::IGnssMeasurementCallback.GnssMeasurement.flags.
+         *
+         */
+        @2.0::IGnssMeasurementCallback.GnssMeasurement v2_0;
+
+        /**
+         * A set of flags indicating the validity of the fields in this data
+         * structure.
+         *
+         * Fields for which there is no corresponding flag must be filled in
+         * with a valid value.  For convenience, these are marked as mandatory.
+         *
+         * Others fields may have invalid information in them, if not marked as
+         * valid by the corresponding bit in flags.
+         */
+        bitfield<GnssMeasurementFlags> flags;
+
+        /**
+         * The receiver inter-signal bias (ISB) in nanoseconds.
+         *
+         * This value is the estimated receiver-side inter-system (different from the constellation
+         * in GnssClock.referenceSignalForIsb) bias and inter-frequency (different from the carrier
+         * frequency in GnssClock.referenceSignalForIsb) bias. The reported receiver ISB
+         * must include signal delays caused by
+         *
+         * - Receiver inter-constellation bias
+         * - Receiver inter-frequency bias
+         * - Receiver inter-code bias
+         *
+         * The value does not include the inter-frequency Ionospheric bias.
+         *
+         * The receiver ISB of GnssClock.referenceSignalForIsb is defined to be 0.0 nanoseconds.
+         */
+        double receiverInterSignalBiasNs;
+
+        /**
+         * 1-sigma uncertainty associated with the receiver inter-signal bias in nanoseconds.
+         */
+        double receiverInterSignalBiasUncertaintyNs;
+
+        /**
+         * The satellite inter-signal bias in nanoseconds.
+         *
+         * This value is the satellite-and-control-segment-side inter-system (different from the
+         * constellation in GnssClock.referenceSignalForIsb) bias and inter-frequency (different
+         * from the carrier frequency in GnssClock.referenceSignalForIsb) bias, including:
+         *
+         * - Master clock bias (e.g., GPS-GAL Time Offset (GGTO), GPT-UTC Time Offset (TauGps),
+         *   BDS-GLO Time Offset (BGTO))
+         * - Group delay (e.g., Total Group Delay (TGD))
+         * - Satellite inter-signal bias, which includes satellite inter-frequency bias (GLO only),
+         *   and satellite inter-code bias (e.g., Differential Code Bias (DCB)).
+         *
+         * The receiver ISB of GnssClock.referenceSignalForIsb is defined to be 0.0 nanoseconds.
+         */
+        double satelliteInterSignalBiasNs;
+
+        /**
+         * 1-sigma uncertainty associated with the satellite inter-signal bias in nanoseconds.
+         */
+        double satelliteInterSignalBiasUncertaintyNs;
+
+        /**
+         * Baseband Carrier-to-noise density in dB-Hz, typically in the range [0, 63]. It contains
+         * the measured C/N0 value for the signal measured at the baseband.
+         *
+         * This is typically a few dB weaker than the value estimated for C/N0 at the antenna port,
+         * which is reported in cN0DbHz.
+         *
+         * If a signal has separate components (e.g. Pilot and Data channels) and the receiver only
+         * processes one of the components, then the reported basebandCN0DbHz reflects only the
+         * component that is processed.
+         *
+         * This value is mandatory.
+         */
+        double basebandCN0DbHz;
+    };
+
+    /**
+     * Extends a GNSS clock time, adding a referenceSignalTypeForIsb.
+     */
+    struct GnssClock {
+        /**
+         * GNSS clock time information, as in the 1.0 version of the HAL.
+         */
+        @1.0::IGnssMeasurementCallback.GnssClock v1_0;
+
+        /**
+         * Reference GNSS signal type for inter-signal bias.
+         */
+        GnssSignalType referenceSignalTypeForIsb;
+    };
+
+    /**
+     * Complete set of GNSS Measurement data, same as 2.0 with additional fields in measurements.
+     */
+    struct GnssData {
+        /** The full set of satellite measurement observations. */
+        vec<GnssMeasurement> measurements;
+
+        /** The GNSS clock time reading. */
+        GnssClock clock;
+
+        /**
+         * Timing information of the GNSS data synchronized with SystemClock.elapsedRealtimeNanos()
+         * clock.
+         */
+        ElapsedRealtime elapsedRealtime;
+    };
+
+    /**
+     * Callback for the hal to pass a GnssData structure back to the client.
+     *
+     * @param data Contains a reading of GNSS measurements.
+     */
+    gnssMeasurementCb_2_1(GnssData data);
+};
diff --git a/gnss/2.1/default/Android.bp b/gnss/2.1/default/Android.bp
new file mode 100644
index 0000000..1f1078e
--- /dev/null
+++ b/gnss/2.1/default/Android.bp
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+cc_binary {
+    name: "android.hardware.gnss@2.1-service",
+    init_rc: ["android.hardware.gnss@2.1-service.rc"],
+    relative_install_path: "hw",
+    vendor: true,
+    vintf_fragments: ["android.hardware.gnss@2.1-service.xml"],
+    srcs: [
+        "Gnss.cpp",
+        "GnssDebug.cpp",
+        "GnssMeasurement.cpp",
+        "GnssMeasurementCorrections.cpp",
+        "GnssConfiguration.cpp",
+        "service.cpp",
+    ],
+    shared_libs: [
+        "libhidlbase",
+        "libutils",
+        "liblog",
+        "android.hardware.gnss.measurement_corrections@1.1",
+        "android.hardware.gnss.measurement_corrections@1.0",
+        "android.hardware.gnss.visibility_control@1.0",
+        "android.hardware.gnss@2.1",
+        "android.hardware.gnss@1.0",
+        "android.hardware.gnss@1.1",
+        "android.hardware.gnss@2.0",
+    ],
+    static_libs: [
+        "android.hardware.gnss@common-default-lib",
+    ],
+}
diff --git a/gnss/2.1/default/Gnss.cpp b/gnss/2.1/default/Gnss.cpp
new file mode 100644
index 0000000..679eb35
--- /dev/null
+++ b/gnss/2.1/default/Gnss.cpp
@@ -0,0 +1,432 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "Gnss"
+
+#include "Gnss.h"
+#include "GnssDebug.h"
+#include "GnssMeasurement.h"
+#include "GnssMeasurementCorrections.h"
+#include "Utils.h"
+
+#include <log/log.h>
+
+using ::android::hardware::gnss::common::Utils;
+using ::android::hardware::gnss::measurement_corrections::V1_1::implementation::
+        GnssMeasurementCorrections;
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V2_1 {
+namespace implementation {
+
+sp<V2_1::IGnssCallback> Gnss::sGnssCallback_2_1 = nullptr;
+sp<V2_0::IGnssCallback> Gnss::sGnssCallback_2_0 = nullptr;
+sp<V1_1::IGnssCallback> Gnss::sGnssCallback_1_1 = nullptr;
+sp<V1_0::IGnssCallback> Gnss::sGnssCallback_1_0 = nullptr;
+
+Gnss::Gnss() : mMinIntervalMs(1000), mGnssConfiguration{new GnssConfiguration()} {}
+
+Gnss::~Gnss() {
+    stop();
+}
+
+Return<bool> Gnss::start() {
+    ALOGD("start");
+    if (mIsActive) {
+        ALOGW("Gnss has started. Restarting...");
+        stop();
+    }
+
+    mIsActive = true;
+    mThread = std::thread([this]() {
+        while (mIsActive == true) {
+            auto svStatus = filterBlacklistedSatellitesV2_1(Utils::getMockSvInfoListV2_1());
+            this->reportSvStatus(svStatus);
+
+            if (sGnssCallback_2_1 != nullptr || sGnssCallback_2_0 != nullptr) {
+                const auto location = Utils::getMockLocationV2_0();
+                this->reportLocation(location);
+            } else {
+                const auto location = Utils::getMockLocationV1_0();
+                this->reportLocation(location);
+            }
+
+            std::this_thread::sleep_for(std::chrono::milliseconds(mMinIntervalMs));
+        }
+    });
+    return true;
+}
+
+hidl_vec<GnssSvInfo> Gnss::filterBlacklistedSatellitesV2_1(hidl_vec<GnssSvInfo> gnssSvInfoList) {
+    for (uint32_t i = 0; i < gnssSvInfoList.size(); i++) {
+        if (mGnssConfiguration->isBlacklistedV2_1(gnssSvInfoList[i])) {
+            gnssSvInfoList[i].v2_0.v1_0.svFlag &=
+                    ~static_cast<uint8_t>(V1_0::IGnssCallback::GnssSvFlags::USED_IN_FIX);
+        }
+    }
+    return gnssSvInfoList;
+}
+
+Return<bool> Gnss::stop() {
+    ALOGD("stop");
+    mIsActive = false;
+    if (mThread.joinable()) {
+        mThread.join();
+    }
+    return true;
+}
+
+// Methods from V1_0::IGnss follow.
+Return<bool> Gnss::setCallback(const sp<V1_0::IGnssCallback>& callback) {
+    if (callback == nullptr) {
+        ALOGE("%s: Null callback ignored", __func__);
+        return false;
+    }
+
+    sGnssCallback_1_0 = callback;
+
+    uint32_t capabilities = 0x0 | V1_0::IGnssCallback::Capabilities::MEASUREMENTS |
+                            V1_0::IGnssCallback::Capabilities::SCHEDULING;
+    auto ret = sGnssCallback_1_0->gnssSetCapabilitesCb(capabilities);
+    if (!ret.isOk()) {
+        ALOGE("%s: Unable to invoke callback", __func__);
+    }
+
+    IGnssCallback::GnssSystemInfo gnssInfo = {.yearOfHw = 2018};
+
+    ret = sGnssCallback_1_0->gnssSetSystemInfoCb(gnssInfo);
+    if (!ret.isOk()) {
+        ALOGE("%s: Unable to invoke callback", __func__);
+    }
+
+    return true;
+}
+
+Return<void> Gnss::cleanup() {
+    sGnssCallback_2_1 = nullptr;
+    sGnssCallback_2_0 = nullptr;
+    return Void();
+}
+
+Return<bool> Gnss::injectTime(int64_t, int64_t, int32_t) {
+    return true;
+}
+
+Return<bool> Gnss::injectLocation(double, double, float) {
+    return true;
+}
+
+Return<void> Gnss::deleteAidingData(V1_0::IGnss::GnssAidingData) {
+    // TODO implement
+    return Void();
+}
+
+Return<bool> Gnss::setPositionMode(V1_0::IGnss::GnssPositionMode,
+                                   V1_0::IGnss::GnssPositionRecurrence, uint32_t minIntervalMs,
+                                   uint32_t, uint32_t) {
+    mMinIntervalMs = minIntervalMs;
+    return true;
+}
+
+Return<sp<V1_0::IAGnssRil>> Gnss::getExtensionAGnssRil() {
+    // TODO implement
+    return ::android::sp<V1_0::IAGnssRil>{};
+}
+
+Return<sp<V1_0::IGnssGeofencing>> Gnss::getExtensionGnssGeofencing() {
+    // TODO implement
+    return ::android::sp<V1_0::IGnssGeofencing>{};
+}
+
+Return<sp<V1_0::IAGnss>> Gnss::getExtensionAGnss() {
+    // TODO implement
+    return ::android::sp<V1_0::IAGnss>{};
+}
+
+Return<sp<V1_0::IGnssNi>> Gnss::getExtensionGnssNi() {
+    // TODO implement
+    return ::android::sp<V1_0::IGnssNi>{};
+}
+
+Return<sp<V1_0::IGnssMeasurement>> Gnss::getExtensionGnssMeasurement() {
+    ALOGD("Gnss::getExtensionGnssMeasurement");
+    return new GnssMeasurement();
+}
+
+Return<sp<V1_0::IGnssNavigationMessage>> Gnss::getExtensionGnssNavigationMessage() {
+    // TODO implement
+    return ::android::sp<V1_0::IGnssNavigationMessage>{};
+}
+
+Return<sp<V1_0::IGnssXtra>> Gnss::getExtensionXtra() {
+    // TODO implement
+    return ::android::sp<V1_0::IGnssXtra>{};
+}
+
+Return<sp<V1_0::IGnssConfiguration>> Gnss::getExtensionGnssConfiguration() {
+    // TODO implement
+    return ::android::sp<V1_0::IGnssConfiguration>{};
+}
+
+Return<sp<V1_0::IGnssDebug>> Gnss::getExtensionGnssDebug() {
+    return new V1_1::implementation::GnssDebug();
+}
+
+Return<sp<V1_0::IGnssBatching>> Gnss::getExtensionGnssBatching() {
+    // TODO implement
+    return ::android::sp<V1_0::IGnssBatching>{};
+}
+
+// Methods from V1_1::IGnss follow.
+Return<bool> Gnss::setCallback_1_1(const sp<V1_1::IGnssCallback>& callback) {
+    if (callback == nullptr) {
+        ALOGE("%s: Null callback ignored", __func__);
+        return false;
+    }
+
+    sGnssCallback_1_1 = callback;
+
+    uint32_t capabilities = 0x0;
+    auto ret = sGnssCallback_1_1->gnssSetCapabilitesCb(capabilities);
+    if (!ret.isOk()) {
+        ALOGE("%s: Unable to invoke callback", __func__);
+    }
+
+    IGnssCallback::GnssSystemInfo gnssInfo = {.yearOfHw = 2018};
+
+    ret = sGnssCallback_1_1->gnssSetSystemInfoCb(gnssInfo);
+    if (!ret.isOk()) {
+        ALOGE("%s: Unable to invoke callback", __func__);
+    }
+
+    auto gnssName = "Google Mock GNSS Implementation v2.1";
+    ret = sGnssCallback_1_1->gnssNameCb(gnssName);
+    if (!ret.isOk()) {
+        ALOGE("%s: Unable to invoke callback", __func__);
+    }
+
+    return true;
+}
+
+Return<bool> Gnss::setPositionMode_1_1(V1_0::IGnss::GnssPositionMode,
+                                       V1_0::IGnss::GnssPositionRecurrence, uint32_t minIntervalMs,
+                                       uint32_t, uint32_t, bool) {
+    mMinIntervalMs = minIntervalMs;
+    return true;
+}
+
+Return<sp<V1_1::IGnssConfiguration>> Gnss::getExtensionGnssConfiguration_1_1() {
+    // TODO implement
+    return ::android::sp<V1_1::IGnssConfiguration>{};
+}
+
+Return<sp<V1_1::IGnssMeasurement>> Gnss::getExtensionGnssMeasurement_1_1() {
+    // TODO implement
+    return ::android::sp<V1_1::IGnssMeasurement>{};
+}
+
+Return<bool> Gnss::injectBestLocation(const V1_0::GnssLocation&) {
+    return true;
+}
+
+// Methods from V2_0::IGnss follow.
+Return<bool> Gnss::setCallback_2_0(const sp<V2_0::IGnssCallback>& callback) {
+    ALOGD("Gnss::setCallback_2_0");
+    if (callback == nullptr) {
+        ALOGE("%s: Null callback ignored", __func__);
+        return false;
+    }
+
+    sGnssCallback_2_0 = callback;
+
+    using Capabilities = V2_0::IGnssCallback::Capabilities;
+    const auto capabilities = Capabilities::MEASUREMENTS | Capabilities::MEASUREMENT_CORRECTIONS |
+                              Capabilities::LOW_POWER_MODE | Capabilities::SATELLITE_BLACKLIST;
+    auto ret = sGnssCallback_2_0->gnssSetCapabilitiesCb_2_0(capabilities);
+    if (!ret.isOk()) {
+        ALOGE("%s: Unable to invoke callback", __func__);
+    }
+
+    V1_1::IGnssCallback::GnssSystemInfo gnssInfo = {.yearOfHw = 2019};
+
+    ret = sGnssCallback_2_0->gnssSetSystemInfoCb(gnssInfo);
+    if (!ret.isOk()) {
+        ALOGE("%s: Unable to invoke callback", __func__);
+    }
+
+    auto gnssName = "Google Mock GNSS Implementation v2.1";
+    ret = sGnssCallback_2_0->gnssNameCb(gnssName);
+    if (!ret.isOk()) {
+        ALOGE("%s: Unable to invoke callback", __func__);
+    }
+
+    return true;
+}
+
+Return<sp<V2_0::IGnssConfiguration>> Gnss::getExtensionGnssConfiguration_2_0() {
+    ALOGD("Gnss::getExtensionGnssConfiguration_2_0");
+    return mGnssConfiguration;
+}
+
+Return<sp<V2_0::IGnssDebug>> Gnss::getExtensionGnssDebug_2_0() {
+    // TODO implement
+    return ::android::sp<V2_0::IGnssDebug>{};
+}
+
+Return<sp<V2_0::IAGnss>> Gnss::getExtensionAGnss_2_0() {
+    // TODO implement
+    return ::android::sp<V2_0::IAGnss>{};
+}
+
+Return<sp<V2_0::IAGnssRil>> Gnss::getExtensionAGnssRil_2_0() {
+    // TODO implement
+    return ::android::sp<V2_0::IAGnssRil>{};
+}
+
+Return<sp<V2_0::IGnssMeasurement>> Gnss::getExtensionGnssMeasurement_2_0() {
+    ALOGD("Gnss::getExtensionGnssMeasurement_2_0");
+    return new GnssMeasurement();
+}
+
+Return<sp<measurement_corrections::V1_0::IMeasurementCorrections>>
+Gnss::getExtensionMeasurementCorrections() {
+    ALOGD("Gnss::getExtensionMeasurementCorrections()");
+    return new GnssMeasurementCorrections();
+}
+
+Return<sp<visibility_control::V1_0::IGnssVisibilityControl>> Gnss::getExtensionVisibilityControl() {
+    // TODO implement
+    return ::android::sp<visibility_control::V1_0::IGnssVisibilityControl>{};
+}
+
+Return<sp<V2_0::IGnssBatching>> Gnss::getExtensionGnssBatching_2_0() {
+    // TODO implement
+    return ::android::sp<V2_0::IGnssBatching>{};
+}
+
+Return<bool> Gnss::injectBestLocation_2_0(const V2_0::GnssLocation&) {
+    // TODO(b/124012850): Implement function.
+    return bool{};
+}
+
+// Methods from V2_1::IGnss follow.
+Return<bool> Gnss::setCallback_2_1(const sp<V2_1::IGnssCallback>& callback) {
+    ALOGD("Gnss::setCallback_2_1");
+    if (callback == nullptr) {
+        ALOGE("%s: Null callback ignored", __func__);
+        return false;
+    }
+
+    sGnssCallback_2_1 = callback;
+
+    using Capabilities = V2_0::IGnssCallback::Capabilities;
+    const auto capabilities = Capabilities::MEASUREMENTS | Capabilities::MEASUREMENT_CORRECTIONS |
+                              Capabilities::LOW_POWER_MODE | Capabilities::SATELLITE_BLACKLIST;
+    auto ret = sGnssCallback_2_1->gnssSetCapabilitiesCb_2_0(capabilities);
+    if (!ret.isOk()) {
+        ALOGE("%s: Unable to invoke callback", __func__);
+    }
+
+    V1_1::IGnssCallback::GnssSystemInfo gnssInfo = {.yearOfHw = 2020};
+
+    ret = sGnssCallback_2_1->gnssSetSystemInfoCb(gnssInfo);
+    if (!ret.isOk()) {
+        ALOGE("%s: Unable to invoke callback", __func__);
+    }
+
+    auto gnssName = "Android Mock GNSS Implementation v2.1";
+    ret = sGnssCallback_2_1->gnssNameCb(gnssName);
+    if (!ret.isOk()) {
+        ALOGE("%s: Unable to invoke callback", __func__);
+    }
+
+    return true;
+}
+
+Return<sp<V2_1::IGnssMeasurement>> Gnss::getExtensionGnssMeasurement_2_1() {
+    ALOGD("Gnss::getExtensionGnssMeasurement_2_1");
+    return new GnssMeasurement();
+}
+
+Return<sp<V2_1::IGnssConfiguration>> Gnss::getExtensionGnssConfiguration_2_1() {
+    ALOGD("Gnss::getExtensionGnssConfiguration_2_1");
+    return mGnssConfiguration;
+}
+
+Return<sp<measurement_corrections::V1_1::IMeasurementCorrections>>
+Gnss::getExtensionMeasurementCorrections_1_1() {
+    ALOGD("Gnss::getExtensionMeasurementCorrections_1_1()");
+    return new GnssMeasurementCorrections();
+}
+
+void Gnss::reportSvStatus(const hidl_vec<GnssSvInfo>& svInfoList) const {
+    std::unique_lock<std::mutex> lock(mMutex);
+    // TODO(skz): update this to call 2_0 callback if non-null
+    if (sGnssCallback_2_1 == nullptr) {
+        ALOGE("%s: sGnssCallback v2.1 is null.", __func__);
+        return;
+    }
+    auto ret = sGnssCallback_2_1->gnssSvStatusCb_2_1(svInfoList);
+    if (!ret.isOk()) {
+        ALOGE("%s: Unable to invoke callback", __func__);
+    }
+}
+
+void Gnss::reportLocation(const V1_0::GnssLocation& location) const {
+    std::unique_lock<std::mutex> lock(mMutex);
+    if (sGnssCallback_1_1 != nullptr) {
+        auto ret = sGnssCallback_1_1->gnssLocationCb(location);
+        if (!ret.isOk()) {
+            ALOGE("%s: Unable to invoke callback v1.1", __func__);
+        }
+        return;
+    }
+    if (sGnssCallback_1_0 == nullptr) {
+        ALOGE("%s: No non-null callback", __func__);
+        return;
+    }
+    auto ret = sGnssCallback_1_0->gnssLocationCb(location);
+    if (!ret.isOk()) {
+        ALOGE("%s: Unable to invoke callback v1.0", __func__);
+    }
+}
+
+void Gnss::reportLocation(const V2_0::GnssLocation& location) const {
+    std::unique_lock<std::mutex> lock(mMutex);
+    if (sGnssCallback_2_1 != nullptr) {
+        auto ret = sGnssCallback_2_1->gnssLocationCb_2_0(location);
+        if (!ret.isOk()) {
+            ALOGE("%s: Unable to invoke callback v2.1", __func__);
+        }
+        return;
+    }
+    if (sGnssCallback_2_0 == nullptr) {
+        ALOGE("%s: No non-null callback", __func__);
+        return;
+    }
+    auto ret = sGnssCallback_2_0->gnssLocationCb_2_0(location);
+    if (!ret.isOk()) {
+        ALOGE("%s: Unable to invoke callback v2.0", __func__);
+    }
+}
+
+}  // namespace implementation
+}  // namespace V2_1
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/gnss/2.1/default/Gnss.h b/gnss/2.1/default/Gnss.h
new file mode 100644
index 0000000..c47206a
--- /dev/null
+++ b/gnss/2.1/default/Gnss.h
@@ -0,0 +1,116 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android/hardware/gnss/2.1/IGnss.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+#include <atomic>
+#include <mutex>
+#include <thread>
+#include "GnssConfiguration.h"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V2_1 {
+
+using GnssSvInfo = IGnssCallback::GnssSvInfo;
+
+namespace implementation {
+
+struct Gnss : public IGnss {
+    Gnss();
+    ~Gnss();
+    // Methods from V1_0::IGnss follow.
+    Return<bool> setCallback(const sp<V1_0::IGnssCallback>& callback) override;
+    Return<bool> start() override;
+    Return<bool> stop() override;
+    Return<void> cleanup() override;
+    Return<bool> injectTime(int64_t timeMs, int64_t timeReferenceMs,
+                            int32_t uncertaintyMs) override;
+    Return<bool> injectLocation(double latitudeDegrees, double longitudeDegrees,
+                                float accuracyMeters) override;
+    Return<void> deleteAidingData(V1_0::IGnss::GnssAidingData aidingDataFlags) override;
+    Return<bool> setPositionMode(V1_0::IGnss::GnssPositionMode mode,
+                                 V1_0::IGnss::GnssPositionRecurrence recurrence,
+                                 uint32_t minIntervalMs, uint32_t preferredAccuracyMeters,
+                                 uint32_t preferredTimeMs) override;
+    Return<sp<V1_0::IAGnssRil>> getExtensionAGnssRil() override;
+    Return<sp<V1_0::IGnssGeofencing>> getExtensionGnssGeofencing() override;
+    Return<sp<V1_0::IAGnss>> getExtensionAGnss() override;
+    Return<sp<V1_0::IGnssNi>> getExtensionGnssNi() override;
+    Return<sp<V1_0::IGnssMeasurement>> getExtensionGnssMeasurement() override;
+    Return<sp<V1_0::IGnssNavigationMessage>> getExtensionGnssNavigationMessage() override;
+    Return<sp<V1_0::IGnssXtra>> getExtensionXtra() override;
+    Return<sp<V1_0::IGnssConfiguration>> getExtensionGnssConfiguration() override;
+    Return<sp<V1_0::IGnssDebug>> getExtensionGnssDebug() override;
+    Return<sp<V1_0::IGnssBatching>> getExtensionGnssBatching() override;
+
+    // Methods from V1_1::IGnss follow.
+    Return<bool> setCallback_1_1(const sp<V1_1::IGnssCallback>& callback) override;
+    Return<bool> setPositionMode_1_1(V1_0::IGnss::GnssPositionMode mode,
+                                     V1_0::IGnss::GnssPositionRecurrence recurrence,
+                                     uint32_t minIntervalMs, uint32_t preferredAccuracyMeters,
+                                     uint32_t preferredTimeMs, bool lowPowerMode) override;
+    Return<sp<V1_1::IGnssConfiguration>> getExtensionGnssConfiguration_1_1() override;
+    Return<sp<V1_1::IGnssMeasurement>> getExtensionGnssMeasurement_1_1() override;
+    Return<bool> injectBestLocation(const V1_0::GnssLocation& location) override;
+
+    // Methods from V2_0::IGnss follow.
+    Return<bool> setCallback_2_0(const sp<V2_0::IGnssCallback>& callback) override;
+    Return<sp<V2_0::IGnssConfiguration>> getExtensionGnssConfiguration_2_0() override;
+    Return<sp<V2_0::IGnssDebug>> getExtensionGnssDebug_2_0() override;
+    Return<sp<V2_0::IAGnss>> getExtensionAGnss_2_0() override;
+    Return<sp<V2_0::IAGnssRil>> getExtensionAGnssRil_2_0() override;
+    Return<sp<V2_0::IGnssMeasurement>> getExtensionGnssMeasurement_2_0() override;
+    Return<sp<measurement_corrections::V1_0::IMeasurementCorrections>>
+    getExtensionMeasurementCorrections() override;
+    Return<sp<visibility_control::V1_0::IGnssVisibilityControl>> getExtensionVisibilityControl()
+            override;
+    Return<sp<V2_0::IGnssBatching>> getExtensionGnssBatching_2_0() override;
+    Return<bool> injectBestLocation_2_0(const V2_0::GnssLocation& location) override;
+
+    // Methods from V2_1::IGnss follow.
+    Return<bool> setCallback_2_1(const sp<V2_1::IGnssCallback>& callback) override;
+    Return<sp<V2_1::IGnssMeasurement>> getExtensionGnssMeasurement_2_1() override;
+    Return<sp<V2_1::IGnssConfiguration>> getExtensionGnssConfiguration_2_1() override;
+    Return<sp<measurement_corrections::V1_1::IMeasurementCorrections>>
+    getExtensionMeasurementCorrections_1_1() override;
+
+  private:
+    void reportLocation(const V2_0::GnssLocation&) const;
+    void reportLocation(const V1_0::GnssLocation&) const;
+    void reportSvStatus(const hidl_vec<GnssSvInfo>&) const;
+
+    static sp<V2_1::IGnssCallback> sGnssCallback_2_1;
+    static sp<V2_0::IGnssCallback> sGnssCallback_2_0;
+    static sp<V1_1::IGnssCallback> sGnssCallback_1_1;
+    static sp<V1_0::IGnssCallback> sGnssCallback_1_0;
+    std::atomic<long> mMinIntervalMs;
+    sp<GnssConfiguration> mGnssConfiguration;
+    std::atomic<bool> mIsActive;
+    std::thread mThread;
+    mutable std::mutex mMutex;
+    hidl_vec<GnssSvInfo> filterBlacklistedSatellitesV2_1(hidl_vec<GnssSvInfo> gnssSvInfoList);
+};
+
+}  // namespace implementation
+}  // namespace V2_1
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/gnss/2.1/default/GnssConfiguration.cpp b/gnss/2.1/default/GnssConfiguration.cpp
new file mode 100644
index 0000000..cd8f07f
--- /dev/null
+++ b/gnss/2.1/default/GnssConfiguration.cpp
@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "GnssConfiguration"
+
+#include "GnssConfiguration.h"
+#include <log/log.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V2_1 {
+namespace implementation {
+
+// Methods from ::android::hardware::gnss::V1_0::IGnssConfiguration follow.
+Return<bool> GnssConfiguration::setSuplEs(bool enable) {
+    ALOGD("setSuplEs enable: %d", enable);
+    // Method deprecated in 2.0 and not expected to be called by the framework.
+    return false;
+}
+
+Return<bool> GnssConfiguration::setSuplVersion(uint32_t) {
+    return true;
+}
+
+Return<bool> GnssConfiguration::setSuplMode(hidl_bitfield<SuplMode>) {
+    return true;
+}
+
+Return<bool> GnssConfiguration::setGpsLock(hidl_bitfield<GpsLock> gpsLock) {
+    ALOGD("setGpsLock gpsLock: %hhu", static_cast<GpsLock>(gpsLock));
+    // Method deprecated in 2.0 and not expected to be called by the framework.
+    return false;
+}
+
+Return<bool> GnssConfiguration::setLppProfile(hidl_bitfield<LppProfile>) {
+    return true;
+}
+
+Return<bool> GnssConfiguration::setGlonassPositioningProtocol(hidl_bitfield<GlonassPosProtocol>) {
+    return true;
+}
+
+Return<bool> GnssConfiguration::setEmergencySuplPdn(bool) {
+    return true;
+}
+
+// Methods from ::android::hardware::gnss::V1_1::IGnssConfiguration follow.
+Return<bool> GnssConfiguration::setBlacklist(
+        const hidl_vec<V1_1::IGnssConfiguration::BlacklistedSource>&) {
+    // TODO (b/122463906): Reuse 1.1 implementation.
+    return bool{};
+}
+
+// Methods from ::android::hardware::gnss::V2_0::IGnssConfiguration follow.
+Return<bool> GnssConfiguration::setEsExtensionSec(uint32_t emergencyExtensionSeconds) {
+    ALOGD("setEsExtensionSec emergencyExtensionSeconds: %d", emergencyExtensionSeconds);
+    return true;
+}
+
+// Methods from ::android::hardware::gnss::V2_1::IGnssConfiguration follow.
+Return<bool> GnssConfiguration::setBlacklist_2_1(
+        const hidl_vec<V2_1::IGnssConfiguration::BlacklistedSource>& sourceList) {
+    std::unique_lock<std::recursive_mutex> lock(mMutex);
+    mBlacklistedConstellationSet.clear();
+    mBlacklistedSourceSet.clear();
+    for (auto source : sourceList) {
+        if (source.svid == 0) {
+            // Wildcard blacklist, i.e., blacklist entire constellation.
+            mBlacklistedConstellationSet.insert(source.constellation);
+        } else {
+            mBlacklistedSourceSet.insert(source);
+        }
+    }
+    return true;
+}
+
+Return<bool> GnssConfiguration::isBlacklistedV2_1(const GnssSvInfoV2_1& gnssSvInfo) const {
+    std::unique_lock<std::recursive_mutex> lock(mMutex);
+    if (mBlacklistedConstellationSet.find(gnssSvInfo.v2_0.constellation) !=
+        mBlacklistedConstellationSet.end()) {
+        return true;
+    }
+    BlacklistedSourceV2_1 source = {.constellation = gnssSvInfo.v2_0.constellation,
+                                    .svid = gnssSvInfo.v2_0.v1_0.svid};
+    return (mBlacklistedSourceSet.find(source) != mBlacklistedSourceSet.end());
+}
+
+}  // namespace implementation
+}  // namespace V2_1
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
\ No newline at end of file
diff --git a/gnss/2.1/default/GnssConfiguration.h b/gnss/2.1/default/GnssConfiguration.h
new file mode 100644
index 0000000..662d61d
--- /dev/null
+++ b/gnss/2.1/default/GnssConfiguration.h
@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_GNSS_V2_1_GNSSCONFIGURATION_H
+#define ANDROID_HARDWARE_GNSS_V2_1_GNSSCONFIGURATION_H
+
+#include <android/hardware/gnss/2.1/IGnssCallback.h>
+#include <android/hardware/gnss/2.1/IGnssConfiguration.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+#include <mutex>
+#include <unordered_set>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V2_1 {
+namespace implementation {
+
+using ::android::sp;
+using ::android::hardware::hidl_array;
+using ::android::hardware::hidl_memory;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+
+using BlacklistedSourceV2_1 =
+        ::android::hardware::gnss::V2_1::IGnssConfiguration::BlacklistedSource;
+using GnssConstellationTypeV2_0 = V2_0::GnssConstellationType;
+using GnssSvInfoV2_1 = V2_1::IGnssCallback::GnssSvInfo;
+
+struct BlacklistedSourceHashV2_1 {
+    inline int operator()(const BlacklistedSourceV2_1& source) const {
+        return int(source.constellation) * 1000 + int(source.svid);
+    }
+};
+
+struct BlacklistedSourceEqualV2_1 {
+    inline bool operator()(const BlacklistedSourceV2_1& s1, const BlacklistedSourceV2_1& s2) const {
+        return (s1.constellation == s2.constellation) && (s1.svid == s2.svid);
+    }
+};
+
+using BlacklistedSourceSetV2_1 =
+        std::unordered_set<BlacklistedSourceV2_1, BlacklistedSourceHashV2_1,
+                           BlacklistedSourceEqualV2_1>;
+using BlacklistedConstellationSetV2_1 = std::unordered_set<GnssConstellationTypeV2_0>;
+
+struct GnssConfiguration : public IGnssConfiguration {
+    // Methods from ::android::hardware::gnss::V1_0::IGnssConfiguration follow.
+    Return<bool> setSuplEs(bool enabled) override;
+    Return<bool> setSuplVersion(uint32_t version) override;
+    Return<bool> setSuplMode(hidl_bitfield<SuplMode> mode) override;
+    Return<bool> setGpsLock(hidl_bitfield<GpsLock> lock) override;
+    Return<bool> setLppProfile(hidl_bitfield<LppProfile> lppProfile) override;
+    Return<bool> setGlonassPositioningProtocol(hidl_bitfield<GlonassPosProtocol> protocol) override;
+    Return<bool> setEmergencySuplPdn(bool enable) override;
+
+    // Methods from ::android::hardware::gnss::V1_1::IGnssConfiguration follow.
+    Return<bool> setBlacklist(
+            const hidl_vec<V1_1::IGnssConfiguration::BlacklistedSource>& blacklist) override;
+
+    std::recursive_mutex& getMutex() const;
+
+    // Methods from ::android::hardware::gnss::V2_0::IGnssConfiguration follow.
+    Return<bool> setEsExtensionSec(uint32_t emergencyExtensionSeconds) override;
+
+    // Methods from ::android::hardware::gnss::V2_1::IGnssConfiguration follow.
+    Return<bool> setBlacklist_2_1(
+            const hidl_vec<V2_1::IGnssConfiguration::BlacklistedSource>& blacklist) override;
+
+    Return<bool> isBlacklistedV2_1(const GnssSvInfoV2_1& gnssSvInfo) const;
+
+  private:
+    mutable std::recursive_mutex mMutex;
+
+    BlacklistedSourceSetV2_1 mBlacklistedSourceSet;
+    BlacklistedConstellationSetV2_1 mBlacklistedConstellationSet;
+};
+
+}  // namespace implementation
+}  // namespace V2_1
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_GNSS_V2_1_GNSSCONFIGURATION_H
\ No newline at end of file
diff --git a/gnss/2.1/default/GnssDebug.cpp b/gnss/2.1/default/GnssDebug.cpp
new file mode 100644
index 0000000..a9f7ded
--- /dev/null
+++ b/gnss/2.1/default/GnssDebug.cpp
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "GnssDebug"
+
+#include <log/log.h>
+
+#include "Constants.h"
+#include "GnssDebug.h"
+
+using namespace ::android::hardware::gnss::common;
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_1 {
+namespace implementation {
+
+// Methods from ::android::hardware::gnss::V1_0::IGnssDebug follow.
+Return<void> GnssDebug::getDebugData(V1_0::IGnssDebug::getDebugData_cb _hidl_cb) {
+    PositionDebug positionDebug = {
+            .valid = true,
+            .latitudeDegrees = kMockLatitudeDegrees,
+            .longitudeDegrees = kMockLongitudeDegrees,
+            .altitudeMeters = kMockAltitudeMeters,
+            .speedMetersPerSec = kMockSpeedMetersPerSec,
+            .bearingDegrees = kMockBearingDegrees,
+            .horizontalAccuracyMeters = kMockHorizontalAccuracyMeters,
+            .verticalAccuracyMeters = kMockVerticalAccuracyMeters,
+            .speedAccuracyMetersPerSecond = kMockSpeedAccuracyMetersPerSecond,
+            .bearingAccuracyDegrees = kMockBearingAccuracyDegrees,
+            .ageSeconds = 0.99};
+
+    TimeDebug timeDebug = {.timeEstimate = kMockTimestamp,
+                           .timeUncertaintyNs = 1000,
+                           .frequencyUncertaintyNsPerSec = 5.0e4};
+
+    DebugData data = {.position = positionDebug, .time = timeDebug};
+
+    _hidl_cb(data);
+
+    return Void();
+}
+
+}  // namespace implementation
+}  // namespace V1_1
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/gnss/2.1/default/GnssDebug.h b/gnss/2.1/default/GnssDebug.h
new file mode 100644
index 0000000..969d337
--- /dev/null
+++ b/gnss/2.1/default/GnssDebug.h
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef android_hardware_gnss_V1_1_GnssDebug_H_
+#define android_hardware_gnss_V1_1_GnssDebug_H_
+
+#include <android/hardware/gnss/1.0/IGnssDebug.h>
+#include <hidl/Status.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V1_1 {
+namespace implementation {
+
+using ::android::sp;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using V1_0::IGnssDebug;
+
+/* Interface for GNSS Debug support. */
+struct GnssDebug : public IGnssDebug {
+    /*
+     * Methods from ::android::hardware::gnss::V1_0::IGnssDebug follow.
+     * These declarations were generated from IGnssDebug.hal.
+     */
+    Return<void> getDebugData(V1_0::IGnssDebug::getDebugData_cb _hidl_cb) override;
+};
+
+}  // namespace implementation
+}  // namespace V1_1
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // android_hardware_gnss_V1_1_GnssDebug_H_
diff --git a/gnss/2.1/default/GnssMeasurement.cpp b/gnss/2.1/default/GnssMeasurement.cpp
new file mode 100644
index 0000000..34e20e5
--- /dev/null
+++ b/gnss/2.1/default/GnssMeasurement.cpp
@@ -0,0 +1,152 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "GnssMeasurement"
+
+#include "GnssMeasurement.h"
+#include <log/log.h>
+#include "Utils.h"
+
+namespace android {
+namespace hardware {
+namespace gnss {
+
+using common::Utils;
+
+namespace V2_1 {
+namespace implementation {
+
+sp<V2_1::IGnssMeasurementCallback> GnssMeasurement::sCallback_2_1 = nullptr;
+sp<V2_0::IGnssMeasurementCallback> GnssMeasurement::sCallback_2_0 = nullptr;
+
+GnssMeasurement::GnssMeasurement() : mMinIntervalMillis(1000) {}
+
+GnssMeasurement::~GnssMeasurement() {
+    stop();
+}
+
+// Methods from V1_0::IGnssMeasurement follow.
+Return<V1_0::IGnssMeasurement::GnssMeasurementStatus> GnssMeasurement::setCallback(
+        const sp<V1_0::IGnssMeasurementCallback>&) {
+    // TODO implement
+    return V1_0::IGnssMeasurement::GnssMeasurementStatus{};
+}
+
+Return<void> GnssMeasurement::close() {
+    ALOGD("close");
+    std::unique_lock<std::mutex> lock(mMutex);
+    stop();
+    sCallback_2_1 = nullptr;
+    sCallback_2_0 = nullptr;
+    return Void();
+}
+
+// Methods from V1_1::IGnssMeasurement follow.
+Return<V1_0::IGnssMeasurement::GnssMeasurementStatus> GnssMeasurement::setCallback_1_1(
+        const sp<V1_1::IGnssMeasurementCallback>&, bool) {
+    // TODO implement
+    return V1_0::IGnssMeasurement::GnssMeasurementStatus{};
+}
+
+// Methods from V2_0::IGnssMeasurement follow.
+Return<V1_0::IGnssMeasurement::GnssMeasurementStatus> GnssMeasurement::setCallback_2_0(
+        const sp<V2_0::IGnssMeasurementCallback>& callback, bool) {
+    ALOGD("setCallback_2_0");
+    std::unique_lock<std::mutex> lock(mMutex);
+    sCallback_2_0 = callback;
+
+    if (mIsActive) {
+        ALOGW("GnssMeasurement callback already set. Resetting the callback...");
+        stop();
+    }
+    start();
+
+    return V1_0::IGnssMeasurement::GnssMeasurementStatus::SUCCESS;
+}
+
+// Methods from V2_1::IGnssMeasurement follow.
+Return<V1_0::IGnssMeasurement::GnssMeasurementStatus> GnssMeasurement::setCallback_2_1(
+        const sp<V2_1::IGnssMeasurementCallback>& callback, bool) {
+    ALOGD("setCallback_2_1");
+    std::unique_lock<std::mutex> lock(mMutex);
+    sCallback_2_1 = callback;
+
+    if (mIsActive) {
+        ALOGW("GnssMeasurement callback already set. Resetting the callback...");
+        stop();
+    }
+    start();
+
+    return V1_0::IGnssMeasurement::GnssMeasurementStatus::SUCCESS;
+}
+
+void GnssMeasurement::start() {
+    ALOGD("start");
+    mIsActive = true;
+    mThread = std::thread([this]() {
+        while (mIsActive == true) {
+            if (sCallback_2_1 != nullptr) {
+                auto measurement = Utils::getMockMeasurementV2_1();
+                this->reportMeasurement(measurement);
+            } else {
+                auto measurement = Utils::getMockMeasurementV2_0();
+                this->reportMeasurement(measurement);
+            }
+
+            std::this_thread::sleep_for(std::chrono::milliseconds(mMinIntervalMillis));
+        }
+    });
+}
+
+void GnssMeasurement::stop() {
+    ALOGD("stop");
+    mIsActive = false;
+    if (mThread.joinable()) {
+        mThread.join();
+    }
+}
+
+void GnssMeasurement::reportMeasurement(const GnssDataV2_0& data) {
+    ALOGD("reportMeasurement()");
+    std::unique_lock<std::mutex> lock(mMutex);
+    if (sCallback_2_0 == nullptr) {
+        ALOGE("%s: GnssMeasurement::sCallback_2_0 is null.", __func__);
+        return;
+    }
+    auto ret = sCallback_2_0->gnssMeasurementCb_2_0(data);
+    if (!ret.isOk()) {
+        ALOGE("%s: Unable to invoke callback", __func__);
+    }
+}
+
+void GnssMeasurement::reportMeasurement(const GnssDataV2_1& data) {
+    ALOGD("reportMeasurement()");
+    std::unique_lock<std::mutex> lock(mMutex);
+    if (sCallback_2_1 == nullptr) {
+        ALOGE("%s: GnssMeasurement::sCallback_2_1 is null.", __func__);
+        return;
+    }
+    auto ret = sCallback_2_1->gnssMeasurementCb_2_1(data);
+    if (!ret.isOk()) {
+        ALOGE("%s: Unable to invoke callback", __func__);
+    }
+}
+
+}  // namespace implementation
+}  // namespace V2_1
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/gnss/2.1/default/GnssMeasurement.h b/gnss/2.1/default/GnssMeasurement.h
new file mode 100644
index 0000000..3ed7bc5
--- /dev/null
+++ b/gnss/2.1/default/GnssMeasurement.h
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android/hardware/gnss/2.1/IGnssMeasurement.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+#include <atomic>
+#include <mutex>
+#include <thread>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace V2_1 {
+namespace implementation {
+
+using GnssDataV2_1 = V2_1::IGnssMeasurementCallback::GnssData;
+using GnssDataV2_0 = V2_0::IGnssMeasurementCallback::GnssData;
+
+using ::android::sp;
+using ::android::hardware::hidl_array;
+using ::android::hardware::hidl_memory;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+
+struct GnssMeasurement : public IGnssMeasurement {
+    GnssMeasurement();
+    ~GnssMeasurement();
+    // Methods from V1_0::IGnssMeasurement follow.
+    Return<V1_0::IGnssMeasurement::GnssMeasurementStatus> setCallback(
+            const sp<V1_0::IGnssMeasurementCallback>& callback) override;
+    Return<void> close() override;
+
+    // Methods from V1_1::IGnssMeasurement follow.
+    Return<V1_0::IGnssMeasurement::GnssMeasurementStatus> setCallback_1_1(
+            const sp<V1_1::IGnssMeasurementCallback>& callback, bool enableFullTracking) override;
+
+    // Methods from V2_0::IGnssMeasurement follow.
+    Return<V1_0::IGnssMeasurement::GnssMeasurementStatus> setCallback_2_0(
+            const sp<V2_0::IGnssMeasurementCallback>& callback, bool enableFullTracking) override;
+
+    // Methods from V2_1::IGnssMeasurement follow.
+    Return<V1_0::IGnssMeasurement::GnssMeasurementStatus> setCallback_2_1(
+            const sp<V2_1::IGnssMeasurementCallback>& callback, bool enableFullTracking) override;
+
+  private:
+    void start();
+    void stop();
+    void reportMeasurement(const GnssDataV2_0&);
+    void reportMeasurement(const GnssDataV2_1&);
+
+    static sp<V2_1::IGnssMeasurementCallback> sCallback_2_1;
+    static sp<V2_0::IGnssMeasurementCallback> sCallback_2_0;
+    std::atomic<long> mMinIntervalMillis;
+    std::atomic<bool> mIsActive;
+    std::thread mThread;
+    mutable std::mutex mMutex;
+};
+
+}  // namespace implementation
+}  // namespace V2_1
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/gnss/2.1/default/GnssMeasurementCorrections.cpp b/gnss/2.1/default/GnssMeasurementCorrections.cpp
new file mode 100644
index 0000000..9dedbf6
--- /dev/null
+++ b/gnss/2.1/default/GnssMeasurementCorrections.cpp
@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "GnssMeasurementCorrections"
+
+#include "GnssMeasurementCorrections.h"
+#include <log/log.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace measurement_corrections {
+namespace V1_1 {
+namespace implementation {
+
+// Methods from V1_0::IMeasurementCorrections follow.
+Return<bool> GnssMeasurementCorrections::setCorrections(
+        const V1_0::MeasurementCorrections& corrections) {
+    ALOGD("setCorrections");
+    ALOGD("corrections = lat: %f, lng: %f, alt: %f, hUnc: %f, vUnc: %f, toa: %llu, "
+          "satCorrections.size: %d",
+          corrections.latitudeDegrees, corrections.longitudeDegrees, corrections.altitudeMeters,
+          corrections.horizontalPositionUncertaintyMeters,
+          corrections.verticalPositionUncertaintyMeters,
+          static_cast<unsigned long long>(corrections.toaGpsNanosecondsOfWeek),
+          static_cast<int>(corrections.satCorrections.size()));
+    for (auto singleSatCorrection : corrections.satCorrections) {
+        ALOGD("singleSatCorrection = flags: %d, constellation: %d, svid: %d, cfHz: %f, probLos: %f,"
+              " epl: %f, eplUnc: %f",
+              static_cast<int>(singleSatCorrection.singleSatCorrectionFlags),
+              static_cast<int>(singleSatCorrection.constellation),
+              static_cast<int>(singleSatCorrection.svid), singleSatCorrection.carrierFrequencyHz,
+              singleSatCorrection.probSatIsLos, singleSatCorrection.excessPathLengthMeters,
+              singleSatCorrection.excessPathLengthUncertaintyMeters);
+        ALOGD("reflecting plane = lat: %f, lng: %f, alt: %f, azm: %f",
+              singleSatCorrection.reflectingPlane.latitudeDegrees,
+              singleSatCorrection.reflectingPlane.longitudeDegrees,
+              singleSatCorrection.reflectingPlane.altitudeMeters,
+              singleSatCorrection.reflectingPlane.azimuthDegrees);
+    }
+
+    return true;
+}
+
+Return<bool> GnssMeasurementCorrections::setCallback(
+        const sp<V1_0::IMeasurementCorrectionsCallback>& callback) {
+    using Capabilities = V1_0::IMeasurementCorrectionsCallback::Capabilities;
+    auto ret =
+            callback->setCapabilitiesCb(Capabilities::LOS_SATS | Capabilities::EXCESS_PATH_LENGTH |
+                                        Capabilities::REFLECTING_PLANE);
+    if (!ret.isOk()) {
+        ALOGE("%s: Unable to invoke callback", __func__);
+        return false;
+    }
+    return true;
+}
+
+// Methods from V1_1::IMeasurementCorrections follow.
+Return<bool> GnssMeasurementCorrections::setCorrections_1_1(
+        const V1_1::MeasurementCorrections& corrections) {
+    ALOGD("setCorrections_1_1");
+    ALOGD("corrections = lat: %f, lng: %f, alt: %f, hUnc: %f, vUnc: %f, toa: %llu,"
+          "satCorrections.size: %d, hasEnvironmentBearing: %d, environmentBearingDeg: %f,"
+          "environmentBearingUncDeg: %f",
+          corrections.v1_0.latitudeDegrees, corrections.v1_0.longitudeDegrees,
+          corrections.v1_0.altitudeMeters, corrections.v1_0.horizontalPositionUncertaintyMeters,
+          corrections.v1_0.verticalPositionUncertaintyMeters,
+          static_cast<unsigned long long>(corrections.v1_0.toaGpsNanosecondsOfWeek),
+          static_cast<int>(corrections.v1_0.satCorrections.size()),
+          corrections.hasEnvironmentBearing, corrections.environmentBearingDegrees,
+          corrections.environmentBearingUncertaintyDegrees);
+    for (auto singleSatCorrection : corrections.v1_0.satCorrections) {
+        ALOGD("singleSatCorrection = flags: %d, constellation: %d, svid: %d, cfHz: %f, probLos: %f,"
+              " epl: %f, eplUnc: %f",
+              static_cast<int>(singleSatCorrection.singleSatCorrectionFlags),
+              static_cast<int>(singleSatCorrection.constellation),
+              static_cast<int>(singleSatCorrection.svid), singleSatCorrection.carrierFrequencyHz,
+              singleSatCorrection.probSatIsLos, singleSatCorrection.excessPathLengthMeters,
+              singleSatCorrection.excessPathLengthUncertaintyMeters);
+        ALOGD("reflecting plane = lat: %f, lng: %f, alt: %f, azm: %f",
+              singleSatCorrection.reflectingPlane.latitudeDegrees,
+              singleSatCorrection.reflectingPlane.longitudeDegrees,
+              singleSatCorrection.reflectingPlane.altitudeMeters,
+              singleSatCorrection.reflectingPlane.azimuthDegrees);
+    }
+
+    return true;
+}
+
+}  // namespace implementation
+}  // namespace V1_1
+}  // namespace measurement_corrections
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/gnss/2.1/default/GnssMeasurementCorrections.h b/gnss/2.1/default/GnssMeasurementCorrections.h
new file mode 100644
index 0000000..036e855
--- /dev/null
+++ b/gnss/2.1/default/GnssMeasurementCorrections.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android/hardware/gnss/measurement_corrections/1.1/IMeasurementCorrections.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace measurement_corrections {
+namespace V1_1 {
+namespace implementation {
+
+using ::android::sp;
+using ::android::hardware::hidl_array;
+using ::android::hardware::hidl_memory;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+
+struct GnssMeasurementCorrections : public IMeasurementCorrections {
+    // Methods from V1_0::IMeasurementCorrections follow.
+    Return<bool> setCorrections(const V1_0::MeasurementCorrections& corrections) override;
+    Return<bool> setCallback(const sp<V1_0::IMeasurementCorrectionsCallback>& callback) override;
+
+    // Methods from V1_1::IMeasurementCorrections follow.
+    Return<bool> setCorrections_1_1(const V1_1::MeasurementCorrections& corrections) override;
+};
+
+}  // namespace implementation
+}  // namespace V1_1
+}  // namespace measurement_corrections
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
diff --git a/gnss/2.1/default/OWNERS b/gnss/2.1/default/OWNERS
new file mode 100644
index 0000000..b7b4a2e
--- /dev/null
+++ b/gnss/2.1/default/OWNERS
@@ -0,0 +1,4 @@
+gomo@google.com
+smalkos@google.com
+wyattriley@google.com
+yuhany@google.com
diff --git a/gnss/2.1/default/android.hardware.gnss@2.1-service.rc b/gnss/2.1/default/android.hardware.gnss@2.1-service.rc
new file mode 100644
index 0000000..5926c77
--- /dev/null
+++ b/gnss/2.1/default/android.hardware.gnss@2.1-service.rc
@@ -0,0 +1,4 @@
+service vendor.gnss-2-1 /vendor/bin/hw/android.hardware.gnss@2.1-service
+    class hal
+    user system
+    group system
diff --git a/gnss/2.1/default/android.hardware.gnss@2.1-service.xml b/gnss/2.1/default/android.hardware.gnss@2.1-service.xml
new file mode 100644
index 0000000..12a1fdf
--- /dev/null
+++ b/gnss/2.1/default/android.hardware.gnss@2.1-service.xml
@@ -0,0 +1,12 @@
+<manifest version="1.0" type="device">
+    <hal format="hidl">
+        <name>android.hardware.gnss</name>
+        <transport>hwbinder</transport>
+        <version>2.1</version>
+        <version>1.1</version>
+        <interface>
+            <name>IGnss</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+</manifest>
diff --git a/gnss/2.1/default/service.cpp b/gnss/2.1/default/service.cpp
new file mode 100644
index 0000000..5e004d5
--- /dev/null
+++ b/gnss/2.1/default/service.cpp
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "android.hardware.gnss@2.1-service"
+
+#include <hidl/HidlSupport.h>
+#include <hidl/HidlTransportSupport.h>
+#include "Gnss.h"
+
+using ::android::OK;
+using ::android::sp;
+using ::android::hardware::configureRpcThreadpool;
+using ::android::hardware::joinRpcThreadpool;
+using ::android::hardware::gnss::V2_1::IGnss;
+using ::android::hardware::gnss::V2_1::implementation::Gnss;
+
+int main(int /* argc */, char* /* argv */[]) {
+    sp<IGnss> gnss = new Gnss();
+    configureRpcThreadpool(1, true /* will join */);
+    if (gnss->registerAsService() != OK) {
+        ALOGE("Could not register gnss 2.1 service.");
+        return 1;
+    }
+    joinRpcThreadpool();
+
+    ALOGE("Service exited!");
+    return 1;
+}
\ No newline at end of file
diff --git a/gnss/2.1/types.hal b/gnss/2.1/types.hal
new file mode 100644
index 0000000..e4484c1
--- /dev/null
+++ b/gnss/2.1/types.hal
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.gnss@2.1;
+
+import @2.0::GnssConstellationType;
+
+/**
+ * Represents a GNSS signal type.
+ */
+struct GnssSignalType {
+    /**
+     * Constellation type of the SV that transmits the signal.
+     */
+    GnssConstellationType constellation;
+
+    /**
+     * Carrier frequency in Hz of the signal.
+     */
+    double carrierFrequencyHz;
+
+    /**
+     * The type of code of the GNSS signal.
+     *
+     * This is used to specify the observation descriptor defined in GNSS Observation Data File
+     * Header Section Description in the RINEX standard (Version 3.XX). In RINEX Version 3.03,
+     * in Appendix Table A2 Attributes are listed as uppercase letters (for instance, "A" for
+     * "A channel").
+     *
+     * See the comment of @2.0::IGnssMeasurementCallback.GnssMeasurement.codeType for more details.
+     */
+    string codeType;
+};
diff --git a/gnss/2.1/vts/OWNERS b/gnss/2.1/vts/OWNERS
new file mode 100644
index 0000000..b7b4a2e
--- /dev/null
+++ b/gnss/2.1/vts/OWNERS
@@ -0,0 +1,4 @@
+gomo@google.com
+smalkos@google.com
+wyattriley@google.com
+yuhany@google.com
diff --git a/gnss/2.1/vts/functional/Android.bp b/gnss/2.1/vts/functional/Android.bp
new file mode 100644
index 0000000..f008a26
--- /dev/null
+++ b/gnss/2.1/vts/functional/Android.bp
@@ -0,0 +1,39 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_test {
+    name: "VtsHalGnssV2_1TargetTest",
+    defaults: ["VtsHalTargetTestDefaults"],
+    srcs: [
+        "gnss_hal_test.cpp",
+        "gnss_hal_test_cases.cpp",
+        "VtsHalGnssV2_1TargetTest.cpp",
+    ],
+    static_libs: [
+        "android.hardware.gnss.measurement_corrections@1.0",
+        "android.hardware.gnss.measurement_corrections@1.1",
+        "android.hardware.gnss.visibility_control@1.0",
+        "android.hardware.gnss@1.0",
+        "android.hardware.gnss@1.1",
+        "android.hardware.gnss@2.0",
+        "android.hardware.gnss@2.1",
+        "android.hardware.gnss@common-vts-lib",
+    ],
+    test_suites: [
+        "general-tests",
+        "vts-core",
+    ],
+}
diff --git a/gnss/2.1/vts/functional/VtsHalGnssV2_1TargetTest.cpp b/gnss/2.1/vts/functional/VtsHalGnssV2_1TargetTest.cpp
new file mode 100644
index 0000000..e61d885
--- /dev/null
+++ b/gnss/2.1/vts/functional/VtsHalGnssV2_1TargetTest.cpp
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#define LOG_TAG "VtsHalGnssV2_1TargetTest"
+
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
+
+#include "gnss_hal_test.h"
+
+using android::hardware::gnss::V2_1::IGnss;
+
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, GnssHalTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IGnss::descriptor)),
+        android::hardware::PrintInstanceNameToString);
\ No newline at end of file
diff --git a/gnss/2.1/vts/functional/gnss_hal_test.cpp b/gnss/2.1/vts/functional/gnss_hal_test.cpp
new file mode 100644
index 0000000..93f89f5
--- /dev/null
+++ b/gnss/2.1/vts/functional/gnss_hal_test.cpp
@@ -0,0 +1,265 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "GnssHalTest"
+
+#include <gnss_hal_test.h>
+#include <chrono>
+#include "Utils.h"
+
+#include <gtest/gtest.h>
+
+using ::android::hardware::gnss::common::Utils;
+
+// Implementations for the main test class for GNSS HAL
+void GnssHalTest::SetUp() {
+    gnss_hal_ = IGnss::getService(GetParam());
+    ASSERT_NE(gnss_hal_, nullptr);
+
+    SetUpGnssCallback();
+}
+
+void GnssHalTest::TearDown() {
+    if (gnss_hal_ != nullptr) {
+        gnss_hal_->cleanup();
+        gnss_hal_ = nullptr;
+    }
+
+    // Set to nullptr to destruct the callback event queues and warn of any unprocessed events.
+    gnss_cb_ = nullptr;
+}
+
+void GnssHalTest::SetUpGnssCallback() {
+    gnss_cb_ = new GnssCallback();
+    ASSERT_NE(gnss_cb_, nullptr);
+
+    auto result = gnss_hal_->setCallback_2_1(gnss_cb_);
+    if (!result.isOk()) {
+        ALOGE("result of failed setCallback %s", result.description().c_str());
+    }
+
+    ASSERT_TRUE(result.isOk());
+    ASSERT_TRUE(result);
+
+    /*
+     * All capabilities, name and systemInfo callbacks should trigger
+     */
+    EXPECT_TRUE(gnss_cb_->capabilities_cbq_.retrieve(gnss_cb_->last_capabilities_, TIMEOUT_SEC));
+    EXPECT_TRUE(gnss_cb_->info_cbq_.retrieve(gnss_cb_->last_info_, TIMEOUT_SEC));
+    EXPECT_TRUE(gnss_cb_->name_cbq_.retrieve(gnss_cb_->last_name_, TIMEOUT_SEC));
+
+    EXPECT_EQ(gnss_cb_->capabilities_cbq_.calledCount(), 1);
+    EXPECT_EQ(gnss_cb_->info_cbq_.calledCount(), 1);
+    EXPECT_EQ(gnss_cb_->name_cbq_.calledCount(), 1);
+}
+
+void GnssHalTest::StopAndClearLocations() {
+    const auto result = gnss_hal_->stop();
+
+    EXPECT_TRUE(result.isOk());
+    EXPECT_TRUE(result);
+
+    /*
+     * Clear notify/waiting counter, allowing up till the timeout after
+     * the last reply for final startup messages to arrive (esp. system
+     * info.)
+     */
+    while (gnss_cb_->location_cbq_.retrieve(gnss_cb_->last_location_, TIMEOUT_SEC)) {
+    }
+    gnss_cb_->location_cbq_.reset();
+}
+
+void GnssHalTest::SetPositionMode(const int min_interval_msec, const bool low_power_mode) {
+    const int kPreferredAccuracy = 0;  // Ideally perfect (matches GnssLocationProvider)
+    const int kPreferredTimeMsec = 0;  // Ideally immediate
+
+    const auto result = gnss_hal_->setPositionMode_1_1(
+            IGnss::GnssPositionMode::MS_BASED, IGnss::GnssPositionRecurrence::RECURRENCE_PERIODIC,
+            min_interval_msec, kPreferredAccuracy, kPreferredTimeMsec, low_power_mode);
+
+    ASSERT_TRUE(result.isOk());
+    EXPECT_TRUE(result);
+}
+
+bool GnssHalTest::StartAndCheckFirstLocation() {
+    const auto result = gnss_hal_->start();
+
+    EXPECT_TRUE(result.isOk());
+    EXPECT_TRUE(result);
+
+    /*
+     * GnssLocationProvider support of AGPS SUPL & XtraDownloader is not available in VTS,
+     * so allow time to demodulate ephemeris over the air.
+     */
+    const int kFirstGnssLocationTimeoutSeconds = 75;
+
+    EXPECT_TRUE(gnss_cb_->location_cbq_.retrieve(gnss_cb_->last_location_,
+                                                 kFirstGnssLocationTimeoutSeconds));
+    int locationCalledCount = gnss_cb_->location_cbq_.calledCount();
+    EXPECT_EQ(locationCalledCount, 1);
+
+    if (locationCalledCount > 0) {
+        // don't require speed on first fix
+        CheckLocation(gnss_cb_->last_location_, false);
+        return true;
+    }
+    return false;
+}
+
+void GnssHalTest::CheckLocation(const GnssLocation_2_0& location, bool check_speed) {
+    const bool check_more_accuracies =
+            (gnss_cb_->info_cbq_.calledCount() > 0 && gnss_cb_->last_info_.yearOfHw >= 2017);
+
+    Utils::checkLocation(location.v1_0, check_speed, check_more_accuracies);
+}
+
+void GnssHalTest::StartAndCheckLocations(int count) {
+    const int kMinIntervalMsec = 500;
+    const int kLocationTimeoutSubsequentSec = 2;
+    const bool kLowPowerMode = false;
+
+    SetPositionMode(kMinIntervalMsec, kLowPowerMode);
+
+    EXPECT_TRUE(StartAndCheckFirstLocation());
+
+    for (int i = 1; i < count; i++) {
+        EXPECT_TRUE(gnss_cb_->location_cbq_.retrieve(gnss_cb_->last_location_,
+                                                     kLocationTimeoutSubsequentSec));
+        int locationCalledCount = gnss_cb_->location_cbq_.calledCount();
+        EXPECT_EQ(locationCalledCount, i + 1);
+        // Don't cause confusion by checking details if no location yet
+        if (locationCalledCount > 0) {
+            // Should be more than 1 location by now, but if not, still don't check first fix speed
+            CheckLocation(gnss_cb_->last_location_, locationCalledCount > 1);
+        }
+    }
+}
+
+GnssConstellationType GnssHalTest::startLocationAndGetNonGpsConstellation(
+        const int locations_to_await, const int gnss_sv_info_list_timeout) {
+    gnss_cb_->location_cbq_.reset();
+    StartAndCheckLocations(locations_to_await);
+    const int location_called_count = gnss_cb_->location_cbq_.calledCount();
+
+    // Tolerate 1 less sv status to handle edge cases in reporting.
+    int sv_info_list_cbq_size = gnss_cb_->sv_info_list_cbq_.size();
+    EXPECT_GE(sv_info_list_cbq_size + 1, locations_to_await);
+    ALOGD("Observed %d GnssSvInfo, while awaiting %d Locations (%d received)",
+          sv_info_list_cbq_size, locations_to_await, location_called_count);
+
+    // Find first non-GPS constellation to blacklist
+    GnssConstellationType constellation_to_blacklist = GnssConstellationType::UNKNOWN;
+    for (int i = 0; i < sv_info_list_cbq_size; ++i) {
+        hidl_vec<IGnssCallback_2_1::GnssSvInfo> sv_info_vec;
+        gnss_cb_->sv_info_list_cbq_.retrieve(sv_info_vec, gnss_sv_info_list_timeout);
+        for (uint32_t iSv = 0; iSv < sv_info_vec.size(); iSv++) {
+            const auto& gnss_sv = sv_info_vec[iSv];
+            if ((gnss_sv.v2_0.v1_0.svFlag & IGnssCallback_1_0::GnssSvFlags::USED_IN_FIX) &&
+                (gnss_sv.v2_0.constellation != GnssConstellationType::UNKNOWN) &&
+                (gnss_sv.v2_0.constellation != GnssConstellationType::GPS)) {
+                // found a non-GPS constellation
+                constellation_to_blacklist = gnss_sv.v2_0.constellation;
+                break;
+            }
+        }
+        if (constellation_to_blacklist != GnssConstellationType::UNKNOWN) {
+            break;
+        }
+    }
+
+    if (constellation_to_blacklist == GnssConstellationType::UNKNOWN) {
+        ALOGI("No non-GPS constellations found, constellation blacklist test less effective.");
+        // Proceed functionally to blacklist something.
+        constellation_to_blacklist = GnssConstellationType::GLONASS;
+    }
+
+    return constellation_to_blacklist;
+}
+
+GnssHalTest::GnssCallback::GnssCallback()
+    : info_cbq_("system_info"),
+      name_cbq_("name"),
+      capabilities_cbq_("capabilities"),
+      location_cbq_("location"),
+      sv_info_list_cbq_("sv_info") {}
+
+Return<void> GnssHalTest::GnssCallback::gnssSetSystemInfoCb(
+        const IGnssCallback_1_0::GnssSystemInfo& info) {
+    ALOGI("Info received, year %d", info.yearOfHw);
+    info_cbq_.store(info);
+    return Void();
+}
+
+Return<void> GnssHalTest::GnssCallback::gnssSetCapabilitesCb(uint32_t capabilities) {
+    ALOGI("Capabilities received %d", capabilities);
+    capabilities_cbq_.store(capabilities);
+    return Void();
+}
+
+Return<void> GnssHalTest::GnssCallback::gnssSetCapabilitiesCb_2_0(uint32_t capabilities) {
+    ALOGI("Capabilities (v2.0) received %d", capabilities);
+    capabilities_cbq_.store(capabilities);
+    return Void();
+}
+
+Return<void> GnssHalTest::GnssCallback::gnssNameCb(const android::hardware::hidl_string& name) {
+    ALOGI("Name received: %s", name.c_str());
+    name_cbq_.store(name);
+    return Void();
+}
+
+Return<void> GnssHalTest::GnssCallback::gnssLocationCb(const GnssLocation_1_0& location) {
+    ALOGI("Location received");
+    GnssLocation_2_0 location_v2_0;
+    location_v2_0.v1_0 = location;
+    return gnssLocationCbImpl(location_v2_0);
+}
+
+Return<void> GnssHalTest::GnssCallback::gnssLocationCb_2_0(const GnssLocation_2_0& location) {
+    ALOGI("Location (v2.0) received");
+    return gnssLocationCbImpl(location);
+}
+
+Return<void> GnssHalTest::GnssCallback::gnssLocationCbImpl(const GnssLocation_2_0& location) {
+    location_cbq_.store(location);
+    return Void();
+}
+
+Return<void> GnssHalTest::GnssCallback::gnssSvStatusCb(const IGnssCallback_1_0::GnssSvStatus&) {
+    ALOGI("gnssSvStatusCb");
+    return Void();
+}
+
+Return<void> GnssHalTest::GnssCallback::gnssSvStatusCb_2_1(
+        const hidl_vec<IGnssCallback_2_1::GnssSvInfo>& svInfoList) {
+    ALOGI("gnssSvStatusCb_2_1. Size = %d", (int)svInfoList.size());
+    sv_info_list_cbq_.store(svInfoList);
+    return Void();
+}
+
+Return<void> GnssHalTest::GnssMeasurementCallback::gnssMeasurementCb_2_1(
+        const IGnssMeasurementCallback_2_1::GnssData& data) {
+    ALOGD("GnssMeasurement v2.1 received. Size = %d", (int)data.measurements.size());
+    measurement_cbq_.store(data);
+    return Void();
+}
+
+Return<void> GnssHalTest::GnssMeasurementCorrectionsCallback::setCapabilitiesCb(
+        uint32_t capabilities) {
+    ALOGI("GnssMeasurementCorrectionsCallback capabilities received %d", capabilities);
+    capabilities_cbq_.store(capabilities);
+    return Void();
+}
\ No newline at end of file
diff --git a/gnss/2.1/vts/functional/gnss_hal_test.h b/gnss/2.1/vts/functional/gnss_hal_test.h
new file mode 100644
index 0000000..b99cf23
--- /dev/null
+++ b/gnss/2.1/vts/functional/gnss_hal_test.h
@@ -0,0 +1,217 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef GNSS_HAL_TEST_H_
+#define GNSS_HAL_TEST_H_
+
+#include <android/hardware/gnss/2.1/IGnss.h>
+#include "GnssCallbackEventQueue.h"
+
+#include <gtest/gtest.h>
+
+using android::hardware::hidl_vec;
+using android::hardware::Return;
+using android::hardware::Void;
+
+using android::hardware::gnss::common::GnssCallbackEventQueue;
+using android::hardware::gnss::measurement_corrections::V1_0::IMeasurementCorrectionsCallback;
+using android::hardware::gnss::V1_0::GnssLocationFlags;
+using android::hardware::gnss::V2_0::GnssConstellationType;
+using android::hardware::gnss::V2_1::IGnss;
+
+using GnssLocation_1_0 = android::hardware::gnss::V1_0::GnssLocation;
+using GnssLocation_2_0 = android::hardware::gnss::V2_0::GnssLocation;
+
+using IGnssCallback_1_0 = android::hardware::gnss::V1_0::IGnssCallback;
+using IGnssCallback_2_0 = android::hardware::gnss::V2_0::IGnssCallback;
+using IGnssCallback_2_1 = android::hardware::gnss::V2_1::IGnssCallback;
+
+using IGnssMeasurementCallback_1_0 = android::hardware::gnss::V1_0::IGnssMeasurementCallback;
+using IGnssMeasurementCallback_1_1 = android::hardware::gnss::V1_1::IGnssMeasurementCallback;
+using IGnssMeasurementCallback_2_0 = android::hardware::gnss::V2_0::IGnssMeasurementCallback;
+using IGnssMeasurementCallback_2_1 = android::hardware::gnss::V2_1::IGnssMeasurementCallback;
+
+using android::sp;
+
+#define TIMEOUT_SEC 2  // for basic commands/responses
+
+// The main test class for GNSS HAL.
+class GnssHalTest : public testing::TestWithParam<std::string> {
+  public:
+    virtual void SetUp() override;
+
+    virtual void TearDown() override;
+
+    /* Callback class for data & Event. */
+    class GnssCallback : public IGnssCallback_2_1 {
+      public:
+        IGnssCallback_1_0::GnssSystemInfo last_info_;
+        android::hardware::hidl_string last_name_;
+        uint32_t last_capabilities_;
+        GnssLocation_2_0 last_location_;
+
+        GnssCallbackEventQueue<IGnssCallback_1_0::GnssSystemInfo> info_cbq_;
+        GnssCallbackEventQueue<android::hardware::hidl_string> name_cbq_;
+        GnssCallbackEventQueue<uint32_t> capabilities_cbq_;
+        GnssCallbackEventQueue<GnssLocation_2_0> location_cbq_;
+        GnssCallbackEventQueue<hidl_vec<IGnssCallback_2_1::GnssSvInfo>> sv_info_list_cbq_;
+
+        GnssCallback();
+        virtual ~GnssCallback() = default;
+
+        // Dummy callback handlers
+        Return<void> gnssStatusCb(const IGnssCallback_1_0::GnssStatusValue /* status */) override {
+            return Void();
+        }
+        Return<void> gnssNmeaCb(int64_t /* timestamp */,
+                                const android::hardware::hidl_string& /* nmea */) override {
+            return Void();
+        }
+        Return<void> gnssAcquireWakelockCb() override { return Void(); }
+        Return<void> gnssReleaseWakelockCb() override { return Void(); }
+        Return<void> gnssRequestLocationCb(bool /* independentFromGnss */) override {
+            return Void();
+        }
+        Return<void> gnssRequestTimeCb() override { return Void(); }
+        // Actual (test) callback handlers
+        Return<void> gnssNameCb(const android::hardware::hidl_string& name) override;
+        Return<void> gnssLocationCb(const GnssLocation_1_0& location) override;
+        Return<void> gnssSetCapabilitesCb(uint32_t capabilities) override;
+        Return<void> gnssSetSystemInfoCb(const IGnssCallback_1_0::GnssSystemInfo& info) override;
+        Return<void> gnssSvStatusCb(const IGnssCallback_1_0::GnssSvStatus& svStatus) override;
+
+        // New in v2.0
+        Return<void> gnssLocationCb_2_0(const GnssLocation_2_0& location) override;
+        Return<void> gnssRequestLocationCb_2_0(bool /* independentFromGnss */,
+                                               bool /* isUserEmergency */) override {
+            return Void();
+        }
+        Return<void> gnssSetCapabilitiesCb_2_0(uint32_t capabilities) override;
+        Return<void> gnssSvStatusCb_2_0(const hidl_vec<IGnssCallback_2_0::GnssSvInfo>&) override {
+            return Void();
+        }
+
+        // New in v2.1
+        Return<void> gnssSvStatusCb_2_1(
+                const hidl_vec<IGnssCallback_2_1::GnssSvInfo>& svInfoList) override;
+
+      private:
+        Return<void> gnssLocationCbImpl(const GnssLocation_2_0& location);
+    };
+
+    /* Callback class for GnssMeasurement. */
+    class GnssMeasurementCallback : public IGnssMeasurementCallback_2_1 {
+      public:
+        GnssCallbackEventQueue<IGnssMeasurementCallback_2_1::GnssData> measurement_cbq_;
+
+        GnssMeasurementCallback() : measurement_cbq_("measurement"){};
+        virtual ~GnssMeasurementCallback() = default;
+
+        // Methods from V1_0::IGnssMeasurementCallback follow.
+        Return<void> GnssMeasurementCb(const IGnssMeasurementCallback_1_0::GnssData&) override {
+            return Void();
+        }
+
+        // Methods from V1_1::IGnssMeasurementCallback follow.
+        Return<void> gnssMeasurementCb(const IGnssMeasurementCallback_1_1::GnssData&) override {
+            return Void();
+        }
+
+        // Methods from V2_0::IGnssMeasurementCallback follow.
+        Return<void> gnssMeasurementCb_2_0(const IGnssMeasurementCallback_2_0::GnssData&) override {
+            return Void();
+        }
+
+        // Methods from V2_1::IGnssMeasurementCallback follow.
+        Return<void> gnssMeasurementCb_2_1(const IGnssMeasurementCallback_2_1::GnssData&) override;
+    };
+
+    /* Callback class for GnssMeasurementCorrections. */
+    class GnssMeasurementCorrectionsCallback : public IMeasurementCorrectionsCallback {
+      public:
+        uint32_t last_capabilities_;
+        GnssCallbackEventQueue<uint32_t> capabilities_cbq_;
+
+        GnssMeasurementCorrectionsCallback() : capabilities_cbq_("capabilities"){};
+        virtual ~GnssMeasurementCorrectionsCallback() = default;
+
+        // Methods from V1_0::IMeasurementCorrectionsCallback follow.
+        Return<void> setCapabilitiesCb(uint32_t capabilities) override;
+    };
+
+    /*
+     * SetUpGnssCallback:
+     *   Set GnssCallback and verify the result.
+     */
+    void SetUpGnssCallback();
+
+    /*
+     * StartAndCheckFirstLocation:
+     *   Helper function to start location, and check the first one.
+     *
+     *   <p> Note this leaves the Location request active, to enable Stop call vs. other call
+     *   reordering tests.
+     *
+     * returns  true if a location was successfully generated
+     */
+    bool StartAndCheckFirstLocation();
+
+    /*
+     * CheckLocation:
+     *   Helper function to vet Location fields
+     *
+     *   check_speed: true if speed related fields are also verified.
+     */
+    void CheckLocation(const GnssLocation_2_0& location, const bool check_speed);
+
+    /*
+     * StartAndCheckLocations:
+     *   Helper function to collect, and check a number of
+     *   normal ~1Hz locations.
+     *
+     *   Note this leaves the Location request active, to enable Stop call vs. other call
+     *   reordering tests.
+     */
+    void StartAndCheckLocations(int count);
+
+    /*
+     * StopAndClearLocations:
+     * Helper function to stop locations, and clear any remaining notifications
+     */
+    void StopAndClearLocations();
+
+    /*
+     * SetPositionMode:
+     * Helper function to set positioning mode and verify output
+     */
+    void SetPositionMode(const int min_interval_msec, const bool low_power_mode);
+
+    /*
+     * startLocationAndGetNonGpsConstellation:
+     * 1. Start location
+     * 2. Find and return first non-GPS constellation
+     *
+     * Note that location is not stopped in this method. The client should call
+     * StopAndClearLocations() after the call.
+     */
+    GnssConstellationType startLocationAndGetNonGpsConstellation(
+            const int locations_to_await, const int gnss_sv_info_list_timeout);
+
+    sp<IGnss> gnss_hal_;        // GNSS HAL to call into
+    sp<GnssCallback> gnss_cb_;  // Primary callback interface
+};
+
+#endif  // GNSS_HAL_TEST_H_
diff --git a/gnss/2.1/vts/functional/gnss_hal_test_cases.cpp b/gnss/2.1/vts/functional/gnss_hal_test_cases.cpp
new file mode 100644
index 0000000..9ac9436
--- /dev/null
+++ b/gnss/2.1/vts/functional/gnss_hal_test_cases.cpp
@@ -0,0 +1,598 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "GnssHalTestCases"
+
+#include <gnss_hal_test.h>
+#include <cmath>
+#include "Utils.h"
+
+#include <gtest/gtest.h>
+
+using android::hardware::hidl_string;
+using android::hardware::hidl_vec;
+
+using android::hardware::gnss::common::Utils;
+
+using IGnssMeasurement_2_1 = android::hardware::gnss::V2_1::IGnssMeasurement;
+using IGnssMeasurement_2_0 = android::hardware::gnss::V2_0::IGnssMeasurement;
+using IGnssMeasurement_1_1 = android::hardware::gnss::V1_1::IGnssMeasurement;
+using IGnssMeasurement_1_0 = android::hardware::gnss::V1_0::IGnssMeasurement;
+
+using IGnssConfiguration_2_1 = android::hardware::gnss::V2_1::IGnssConfiguration;
+using IGnssConfiguration_2_0 = android::hardware::gnss::V2_0::IGnssConfiguration;
+using IGnssConfiguration_1_1 = android::hardware::gnss::V1_1::IGnssConfiguration;
+using IGnssConfiguration_1_0 = android::hardware::gnss::V1_0::IGnssConfiguration;
+
+using android::hardware::gnss::V2_0::GnssConstellationType;
+using android::hardware::gnss::V2_1::IGnssConfiguration;
+
+using GnssMeasurementFlags = IGnssMeasurementCallback_2_1::GnssMeasurementFlags;
+using IMeasurementCorrections_1_1 =
+        android::hardware::gnss::measurement_corrections::V1_1::IMeasurementCorrections;
+
+/*
+ * SetupTeardownCreateCleanup:
+ * Requests the gnss HAL then calls cleanup
+ *
+ * Empty test fixture to verify basic Setup & Teardown
+ */
+TEST_P(GnssHalTest, SetupTeardownCreateCleanup) {}
+
+/*
+ * TestGnssMeasurementExtension:
+ * Gets the GnssMeasurementExtension and verifies that it returns an actual extension.
+ */
+TEST_P(GnssHalTest, TestGnssMeasurementExtension) {
+    auto gnssMeasurement_2_1 = gnss_hal_->getExtensionGnssMeasurement_2_1();
+    auto gnssMeasurement_2_0 = gnss_hal_->getExtensionGnssMeasurement_2_0();
+    auto gnssMeasurement_1_1 = gnss_hal_->getExtensionGnssMeasurement_1_1();
+    auto gnssMeasurement_1_0 = gnss_hal_->getExtensionGnssMeasurement();
+    ASSERT_TRUE(gnssMeasurement_2_1.isOk() && gnssMeasurement_2_0.isOk() &&
+                gnssMeasurement_1_1.isOk() && gnssMeasurement_1_0.isOk());
+    sp<IGnssMeasurement_2_1> iGnssMeas_2_1 = gnssMeasurement_2_1;
+    sp<IGnssMeasurement_2_0> iGnssMeas_2_0 = gnssMeasurement_2_0;
+    sp<IGnssMeasurement_1_1> iGnssMeas_1_1 = gnssMeasurement_1_1;
+    sp<IGnssMeasurement_1_0> iGnssMeas_1_0 = gnssMeasurement_1_0;
+    // At least one interface is non-null.
+    int numNonNull = (int)(iGnssMeas_2_1 != nullptr) + (int)(iGnssMeas_2_0 != nullptr) +
+                     (int)(iGnssMeas_1_1 != nullptr) + (int)(iGnssMeas_1_0 != nullptr);
+    ASSERT_TRUE(numNonNull >= 1);
+}
+
+/*
+ * TestGnssConfigurationExtension:
+ * Gets the GnssConfigurationExtension and verifies that it returns an actual extension.
+ */
+TEST_P(GnssHalTest, TestGnssConfigurationExtension) {
+    auto gnssConfiguration_2_1 = gnss_hal_->getExtensionGnssConfiguration_2_1();
+    auto gnssConfiguration_2_0 = gnss_hal_->getExtensionGnssConfiguration_2_0();
+    auto gnssConfiguration_1_1 = gnss_hal_->getExtensionGnssConfiguration_1_1();
+    auto gnssConfiguration_1_0 = gnss_hal_->getExtensionGnssConfiguration();
+    ASSERT_TRUE(gnssConfiguration_2_1.isOk() && gnssConfiguration_2_0.isOk() &&
+                gnssConfiguration_1_1.isOk() && gnssConfiguration_1_0.isOk());
+    sp<IGnssConfiguration_2_1> iGnssConfig_2_1 = gnssConfiguration_2_1;
+    sp<IGnssConfiguration_2_0> iGnssConfig_2_0 = gnssConfiguration_2_0;
+    sp<IGnssConfiguration_1_1> iGnssConfig_1_1 = gnssConfiguration_1_1;
+    sp<IGnssConfiguration_1_0> iGnssConfig_1_0 = gnssConfiguration_1_0;
+    // At least one interface is non-null.
+    int numNonNull = (int)(iGnssConfig_2_1 != nullptr) + (int)(iGnssConfig_2_0 != nullptr) +
+                     (int)(iGnssConfig_1_1 != nullptr) + (int)(iGnssConfig_1_0 != nullptr);
+    ASSERT_TRUE(numNonNull >= 1);
+}
+
+/*
+ * TestGnssMeasurementFields:
+ * Sets a GnssMeasurementCallback, waits for a measurement, and verifies
+ * 1. basebandCN0DbHz is valid
+ * 2. ISB fields are valid if HAS_INTER_SIGNAL_BIAS is true.
+ */
+TEST_P(GnssHalTest, TestGnssMeasurementFields) {
+    const int kFirstGnssMeasurementTimeoutSeconds = 10;
+
+    auto gnssMeasurement = gnss_hal_->getExtensionGnssMeasurement_2_1();
+    ASSERT_TRUE(gnssMeasurement.isOk());
+
+    // Skip test if GnssMeasurement v2.1 is not supported
+    sp<IGnssMeasurement_2_1> iGnssMeasurement = gnssMeasurement;
+    if (iGnssMeasurement == nullptr) {
+        return;
+    }
+
+    sp<GnssMeasurementCallback> callback = new GnssMeasurementCallback();
+    auto result = iGnssMeasurement->setCallback_2_1(callback, /* enableFullTracking= */ true);
+    ASSERT_TRUE(result.isOk());
+    EXPECT_EQ(result, IGnssMeasurement_1_0::GnssMeasurementStatus::SUCCESS);
+
+    IGnssMeasurementCallback_2_1::GnssData lastMeasurement;
+    ASSERT_TRUE(callback->measurement_cbq_.retrieve(lastMeasurement,
+                                                    kFirstGnssMeasurementTimeoutSeconds));
+    EXPECT_EQ(callback->measurement_cbq_.calledCount(), 1);
+    ASSERT_TRUE(lastMeasurement.measurements.size() > 0);
+    for (auto measurement : lastMeasurement.measurements) {
+        // Verify basebandCn0DbHz is valid.
+        ASSERT_TRUE(measurement.basebandCN0DbHz > 0.0 && measurement.basebandCN0DbHz <= 65.0);
+
+        if (((uint32_t)(measurement.flags & GnssMeasurementFlags::HAS_RECEIVER_ISB) > 0) &&
+            ((uint32_t)(measurement.flags & GnssMeasurementFlags::HAS_RECEIVER_ISB_UNCERTAINTY) >
+             0) &&
+            ((uint32_t)(measurement.flags & GnssMeasurementFlags::HAS_SATELLITE_ISB) > 0) &&
+            ((uint32_t)(measurement.flags & GnssMeasurementFlags::HAS_SATELLITE_ISB_UNCERTAINTY) >
+             0)) {
+            GnssConstellationType referenceConstellation =
+                    lastMeasurement.clock.referenceSignalTypeForIsb.constellation;
+            double carrierFrequencyHz =
+                    lastMeasurement.clock.referenceSignalTypeForIsb.carrierFrequencyHz;
+            std::string codeType = lastMeasurement.clock.referenceSignalTypeForIsb.codeType;
+
+            ASSERT_TRUE(referenceConstellation >= GnssConstellationType::UNKNOWN &&
+                        referenceConstellation >= GnssConstellationType::IRNSS);
+            ASSERT_TRUE(carrierFrequencyHz > 0);
+            ASSERT_TRUE(codeType != "");
+
+            ASSERT_TRUE(std::abs(measurement.receiverInterSignalBiasNs) < 1.0e6);
+            ASSERT_TRUE(measurement.receiverInterSignalBiasUncertaintyNs >= 0);
+            ASSERT_TRUE(std::abs(measurement.satelliteInterSignalBiasNs) < 1.0e6);
+            ASSERT_TRUE(measurement.satelliteInterSignalBiasUncertaintyNs >= 0);
+        }
+    }
+
+    iGnssMeasurement->close();
+}
+
+/*
+ * TestGnssSvInfoFields:
+ * Gets 1 location and a GnssSvInfo, and verifies
+ * 1. basebandCN0DbHz is valid.
+ */
+TEST_P(GnssHalTest, TestGnssSvInfoFields) {
+    gnss_cb_->location_cbq_.reset();
+    StartAndCheckFirstLocation();
+    int location_called_count = gnss_cb_->location_cbq_.calledCount();
+
+    // Tolerate 1 less sv status to handle edge cases in reporting.
+    int sv_info_list_cbq_size = gnss_cb_->sv_info_list_cbq_.size();
+    EXPECT_GE(sv_info_list_cbq_size, 0);
+    ALOGD("Observed %d GnssSvStatus, while awaiting one location (%d received)",
+          sv_info_list_cbq_size, location_called_count);
+
+    hidl_vec<IGnssCallback_2_1::GnssSvInfo> last_sv_info_list;
+    ASSERT_TRUE(gnss_cb_->sv_info_list_cbq_.retrieve(last_sv_info_list, 1));
+
+    bool nonZeroCn0Found = false;
+    for (auto sv_info : last_sv_info_list) {
+        ASSERT_TRUE(sv_info.basebandCN0DbHz >= 0.0 && sv_info.basebandCN0DbHz <= 65.0);
+        if (sv_info.basebandCN0DbHz > 0.0) {
+            nonZeroCn0Found = true;
+        }
+    }
+    // Assert at least one value is non-zero. Zero is ok in status as it's possibly
+    // reporting a searched but not found satellite.
+    ASSERT_TRUE(nonZeroCn0Found);
+    StopAndClearLocations();
+}
+
+/*
+ * FindStrongFrequentNonGpsSource:
+ *
+ * Search through a GnssSvStatus list for the strongest non-GPS satellite observed enough times
+ *
+ * returns the strongest source,
+ *         or a source with constellation == UNKNOWN if none are found sufficient times
+ * TODO(skz): create a template for this to reduce code duplication of v2.1 and v2.0 since both
+ * are using vectors.
+ */
+IGnssConfiguration::BlacklistedSource FindStrongFrequentNonGpsSource(
+        const std::list<hidl_vec<IGnssCallback_2_1::GnssSvInfo>> sv_info_list,
+        const int min_observations) {
+    struct ComparableBlacklistedSource {
+        IGnssConfiguration::BlacklistedSource id;
+
+        ComparableBlacklistedSource() {
+            id.constellation = GnssConstellationType::UNKNOWN;
+            id.svid = 0;
+        }
+
+        bool operator<(const ComparableBlacklistedSource& compare) const {
+            return ((id.svid < compare.id.svid) || ((id.svid == compare.id.svid) &&
+                                                    (id.constellation < compare.id.constellation)));
+        }
+    };
+
+    struct SignalCounts {
+        int observations;
+        float max_cn0_dbhz;
+    };
+
+    std::map<ComparableBlacklistedSource, SignalCounts> mapSignals;
+
+    for (const auto& sv_info_vec : sv_info_list) {
+        for (uint32_t iSv = 0; iSv < sv_info_vec.size(); iSv++) {
+            const auto& gnss_sv = sv_info_vec[iSv];
+            if ((gnss_sv.v2_0.v1_0.svFlag & IGnssCallback_1_0::GnssSvFlags::USED_IN_FIX) &&
+                (gnss_sv.v2_0.constellation != GnssConstellationType::GPS)) {
+                ComparableBlacklistedSource source;
+                source.id.svid = gnss_sv.v2_0.v1_0.svid;
+                source.id.constellation = gnss_sv.v2_0.constellation;
+
+                const auto& itSignal = mapSignals.find(source);
+                if (itSignal == mapSignals.end()) {
+                    SignalCounts counts;
+                    counts.observations = 1;
+                    counts.max_cn0_dbhz = gnss_sv.v2_0.v1_0.cN0Dbhz;
+                    mapSignals.insert(
+                            std::pair<ComparableBlacklistedSource, SignalCounts>(source, counts));
+                } else {
+                    itSignal->second.observations++;
+                    if (itSignal->second.max_cn0_dbhz < gnss_sv.v2_0.v1_0.cN0Dbhz) {
+                        itSignal->second.max_cn0_dbhz = gnss_sv.v2_0.v1_0.cN0Dbhz;
+                    }
+                }
+            }
+        }
+    }
+
+    float max_cn0_dbhz_with_sufficient_count = 0.;
+    int total_observation_count = 0;
+    int blacklisted_source_count_observation = 0;
+
+    ComparableBlacklistedSource source_to_blacklist;  // initializes to zero = UNKNOWN constellation
+    for (auto const& pairSignal : mapSignals) {
+        total_observation_count += pairSignal.second.observations;
+        if ((pairSignal.second.observations >= min_observations) &&
+            (pairSignal.second.max_cn0_dbhz > max_cn0_dbhz_with_sufficient_count)) {
+            source_to_blacklist = pairSignal.first;
+            blacklisted_source_count_observation = pairSignal.second.observations;
+            max_cn0_dbhz_with_sufficient_count = pairSignal.second.max_cn0_dbhz;
+        }
+    }
+    ALOGD("Among %d observations, chose svid %d, constellation %d, "
+          "with %d observations at %.1f max CNo",
+          total_observation_count, source_to_blacklist.id.svid,
+          (int)source_to_blacklist.id.constellation, blacklisted_source_count_observation,
+          max_cn0_dbhz_with_sufficient_count);
+
+    return source_to_blacklist.id;
+}
+
+/*
+ * BlacklistIndividualSatellites:
+ *
+ * 1) Turns on location, waits for 3 locations, ensuring they are valid, and checks corresponding
+ * GnssStatus for common satellites (strongest and one other.)
+ * 2a & b) Turns off location, and blacklists common satellites.
+ * 3) Restart location, wait for 3 locations, ensuring they are valid, and checks corresponding
+ * GnssStatus does not use those satellites.
+ * 4a & b) Turns off location, and send in empty blacklist.
+ * 5a) Restart location, wait for 3 locations, ensuring they are valid, and checks corresponding
+ * GnssStatus does re-use at least the previously strongest satellite
+ * 5b) Retry a few times, in case GNSS search strategy takes a while to reacquire even the
+ * formerly strongest satellite
+ */
+TEST_P(GnssHalTest, BlacklistIndividualSatellites) {
+    const int kLocationsToAwait = 3;
+    const int kRetriesToUnBlacklist = 10;
+
+    gnss_cb_->location_cbq_.reset();
+    StartAndCheckLocations(kLocationsToAwait);
+    int location_called_count = gnss_cb_->location_cbq_.calledCount();
+
+    // Tolerate 1 less sv status to handle edge cases in reporting.
+    int sv_info_list_cbq_size = gnss_cb_->sv_info_list_cbq_.size();
+    EXPECT_GE(sv_info_list_cbq_size + 1, kLocationsToAwait);
+    ALOGD("Observed %d GnssSvInfo, while awaiting %d Locations (%d received)",
+          sv_info_list_cbq_size, kLocationsToAwait, location_called_count);
+
+    /*
+     * Identify strongest SV seen at least kLocationsToAwait -1 times
+     * Why -1?  To avoid test flakiness in case of (plausible) slight flakiness in strongest signal
+     * observability (one epoch RF null)
+     */
+
+    const int kGnssSvInfoListTimeout = 2;
+    std::list<hidl_vec<IGnssCallback_2_1::GnssSvInfo>> sv_info_vec_list;
+    int count = gnss_cb_->sv_info_list_cbq_.retrieve(sv_info_vec_list, sv_info_list_cbq_size,
+                                                     kGnssSvInfoListTimeout);
+
+    ASSERT_EQ(count, sv_info_list_cbq_size);
+
+    IGnssConfiguration::BlacklistedSource source_to_blacklist =
+            FindStrongFrequentNonGpsSource(sv_info_vec_list, kLocationsToAwait - 1);
+
+    if (source_to_blacklist.constellation == GnssConstellationType::UNKNOWN) {
+        // Cannot find a non-GPS satellite. Let the test pass.
+        ALOGD("Cannot find a non-GPS satellite. Letting the test pass.");
+        return;
+    }
+
+    // Stop locations, blacklist the common SV
+    StopAndClearLocations();
+
+    auto gnss_configuration_hal_return = gnss_hal_->getExtensionGnssConfiguration_2_1();
+    ASSERT_TRUE(gnss_configuration_hal_return.isOk());
+    sp<IGnssConfiguration> gnss_configuration_hal = gnss_configuration_hal_return;
+    ASSERT_NE(gnss_configuration_hal, nullptr);
+
+    hidl_vec<IGnssConfiguration::BlacklistedSource> sources;
+    sources.resize(1);
+    sources[0] = source_to_blacklist;
+
+    auto result = gnss_configuration_hal->setBlacklist_2_1(sources);
+    ASSERT_TRUE(result.isOk());
+    EXPECT_TRUE(result);
+
+    // retry and ensure satellite not used
+    gnss_cb_->sv_info_list_cbq_.reset();
+
+    gnss_cb_->location_cbq_.reset();
+    StartAndCheckLocations(kLocationsToAwait);
+
+    // early exit if test is being run with insufficient signal
+    location_called_count = gnss_cb_->location_cbq_.calledCount();
+    if (location_called_count == 0) {
+        ALOGE("0 Gnss locations received - ensure sufficient signal and retry");
+    }
+    ASSERT_TRUE(location_called_count > 0);
+
+    // Tolerate 1 less sv status to handle edge cases in reporting.
+    sv_info_list_cbq_size = gnss_cb_->sv_info_list_cbq_.size();
+    EXPECT_GE(sv_info_list_cbq_size + 1, kLocationsToAwait);
+    ALOGD("Observed %d GnssSvInfo, while awaiting %d Locations (%d received)",
+          sv_info_list_cbq_size, kLocationsToAwait, location_called_count);
+    for (int i = 0; i < sv_info_list_cbq_size; ++i) {
+        hidl_vec<IGnssCallback_2_1::GnssSvInfo> sv_info_vec;
+        gnss_cb_->sv_info_list_cbq_.retrieve(sv_info_vec, kGnssSvInfoListTimeout);
+        for (uint32_t iSv = 0; iSv < sv_info_vec.size(); iSv++) {
+            const auto& gnss_sv = sv_info_vec[iSv];
+            EXPECT_FALSE((gnss_sv.v2_0.v1_0.svid == source_to_blacklist.svid) &&
+                         (gnss_sv.v2_0.constellation == source_to_blacklist.constellation) &&
+                         (gnss_sv.v2_0.v1_0.svFlag & IGnssCallback_1_0::GnssSvFlags::USED_IN_FIX));
+        }
+    }
+
+    // clear blacklist and restart - this time updating the blacklist while location is still on
+    sources.resize(0);
+
+    result = gnss_configuration_hal->setBlacklist_2_1(sources);
+    ASSERT_TRUE(result.isOk());
+    EXPECT_TRUE(result);
+
+    bool strongest_sv_is_reobserved = false;
+    // do several loops awaiting a few locations, allowing non-immediate reacquisition strategies
+    int unblacklist_loops_remaining = kRetriesToUnBlacklist;
+    while (!strongest_sv_is_reobserved && (unblacklist_loops_remaining-- > 0)) {
+        StopAndClearLocations();
+        gnss_cb_->sv_info_list_cbq_.reset();
+
+        gnss_cb_->location_cbq_.reset();
+        StartAndCheckLocations(kLocationsToAwait);
+
+        // early exit loop if test is being run with insufficient signal
+        location_called_count = gnss_cb_->location_cbq_.calledCount();
+        if (location_called_count == 0) {
+            ALOGE("0 Gnss locations received - ensure sufficient signal and retry");
+        }
+        ASSERT_TRUE(location_called_count > 0);
+
+        // Tolerate 1 less sv status to handle edge cases in reporting.
+        sv_info_list_cbq_size = gnss_cb_->sv_info_list_cbq_.size();
+        EXPECT_GE(sv_info_list_cbq_size + 1, kLocationsToAwait);
+        ALOGD("Clear blacklist, observed %d GnssSvInfo, while awaiting %d Locations"
+              ", tries remaining %d",
+              sv_info_list_cbq_size, kLocationsToAwait, unblacklist_loops_remaining);
+
+        for (int i = 0; i < sv_info_list_cbq_size; ++i) {
+            hidl_vec<IGnssCallback_2_1::GnssSvInfo> sv_info_vec;
+            gnss_cb_->sv_info_list_cbq_.retrieve(sv_info_vec, kGnssSvInfoListTimeout);
+            for (uint32_t iSv = 0; iSv < sv_info_vec.size(); iSv++) {
+                const auto& gnss_sv = sv_info_vec[iSv];
+                if ((gnss_sv.v2_0.v1_0.svid == source_to_blacklist.svid) &&
+                    (gnss_sv.v2_0.constellation == source_to_blacklist.constellation) &&
+                    (gnss_sv.v2_0.v1_0.svFlag & IGnssCallback_1_0::GnssSvFlags::USED_IN_FIX)) {
+                    strongest_sv_is_reobserved = true;
+                    break;
+                }
+            }
+            if (strongest_sv_is_reobserved) break;
+        }
+    }
+    EXPECT_TRUE(strongest_sv_is_reobserved);
+    StopAndClearLocations();
+}
+
+/*
+ * BlacklistConstellationLocationOff:
+ *
+ * 1) Turns on location, waits for 3 locations, ensuring they are valid, and checks corresponding
+ * GnssStatus for any non-GPS constellations.
+ * 2a & b) Turns off location, and blacklist first non-GPS constellations.
+ * 3) Restart location, wait for 3 locations, ensuring they are valid, and checks corresponding
+ * GnssStatus does not use any constellation but GPS.
+ * 4a & b) Clean up by turning off location, and send in empty blacklist.
+ */
+TEST_P(GnssHalTest, BlacklistConstellationLocationOff) {
+    const int kLocationsToAwait = 3;
+    const int kGnssSvInfoListTimeout = 2;
+
+    // Find first non-GPS constellation to blacklist
+    GnssConstellationType constellation_to_blacklist =
+            startLocationAndGetNonGpsConstellation(kLocationsToAwait, kGnssSvInfoListTimeout);
+
+    // Turns off location
+    StopAndClearLocations();
+
+    IGnssConfiguration::BlacklistedSource source_to_blacklist_1;
+    source_to_blacklist_1.constellation = constellation_to_blacklist;
+    source_to_blacklist_1.svid = 0;  // documented wildcard for all satellites in this constellation
+
+    // IRNSS was added in 2.0. Always attempt to blacklist IRNSS to verify that the new enum is
+    // supported.
+    IGnssConfiguration::BlacklistedSource source_to_blacklist_2;
+    source_to_blacklist_2.constellation = GnssConstellationType::IRNSS;
+    source_to_blacklist_2.svid = 0;  // documented wildcard for all satellites in this constellation
+
+    auto gnss_configuration_hal_return = gnss_hal_->getExtensionGnssConfiguration_2_1();
+    ASSERT_TRUE(gnss_configuration_hal_return.isOk());
+    sp<IGnssConfiguration> gnss_configuration_hal = gnss_configuration_hal_return;
+    ASSERT_NE(gnss_configuration_hal, nullptr);
+
+    hidl_vec<IGnssConfiguration::BlacklistedSource> sources;
+    sources.resize(2);
+    sources[0] = source_to_blacklist_1;
+    sources[1] = source_to_blacklist_2;
+
+    auto result = gnss_configuration_hal->setBlacklist_2_1(sources);
+    ASSERT_TRUE(result.isOk());
+    EXPECT_TRUE(result);
+
+    // retry and ensure constellation not used
+    gnss_cb_->sv_info_list_cbq_.reset();
+
+    gnss_cb_->location_cbq_.reset();
+    StartAndCheckLocations(kLocationsToAwait);
+
+    // Tolerate 1 less sv status to handle edge cases in reporting.
+    int sv_info_list_cbq_size = gnss_cb_->sv_info_list_cbq_.size();
+    EXPECT_GE(sv_info_list_cbq_size + 1, kLocationsToAwait);
+    ALOGD("Observed %d GnssSvInfo, while awaiting %d Locations", sv_info_list_cbq_size,
+          kLocationsToAwait);
+    for (int i = 0; i < sv_info_list_cbq_size; ++i) {
+        hidl_vec<IGnssCallback_2_1::GnssSvInfo> sv_info_vec;
+        gnss_cb_->sv_info_list_cbq_.retrieve(sv_info_vec, kGnssSvInfoListTimeout);
+        for (uint32_t iSv = 0; iSv < sv_info_vec.size(); iSv++) {
+            const auto& gnss_sv = sv_info_vec[iSv];
+            EXPECT_FALSE((gnss_sv.v2_0.constellation == source_to_blacklist_1.constellation) &&
+                         (gnss_sv.v2_0.v1_0.svFlag & IGnssCallback_1_0::GnssSvFlags::USED_IN_FIX));
+            EXPECT_FALSE((gnss_sv.v2_0.constellation == source_to_blacklist_2.constellation) &&
+                         (gnss_sv.v2_0.v1_0.svFlag & IGnssCallback_1_0::GnssSvFlags::USED_IN_FIX));
+        }
+    }
+
+    // clean up
+    StopAndClearLocations();
+    sources.resize(0);
+    result = gnss_configuration_hal->setBlacklist_2_1(sources);
+    ASSERT_TRUE(result.isOk());
+    EXPECT_TRUE(result);
+}
+
+/*
+ * BlacklistConstellationLocationOn:
+ *
+ * 1) Turns on location, waits for 3 locations, ensuring they are valid, and checks corresponding
+ * GnssStatus for any non-GPS constellations.
+ * 2a & b) Blacklist first non-GPS constellation, and turn off location.
+ * 3) Restart location, wait for 3 locations, ensuring they are valid, and checks corresponding
+ * GnssStatus does not use any constellation but GPS.
+ * 4a & b) Clean up by turning off location, and send in empty blacklist.
+ */
+TEST_P(GnssHalTest, BlacklistConstellationLocationOn) {
+    const int kLocationsToAwait = 3;
+    const int kGnssSvInfoListTimeout = 2;
+
+    // Find first non-GPS constellation to blacklist
+    GnssConstellationType constellation_to_blacklist =
+            startLocationAndGetNonGpsConstellation(kLocationsToAwait, kGnssSvInfoListTimeout);
+
+    IGnssConfiguration::BlacklistedSource source_to_blacklist_1;
+    source_to_blacklist_1.constellation = constellation_to_blacklist;
+    source_to_blacklist_1.svid = 0;  // documented wildcard for all satellites in this constellation
+
+    // IRNSS was added in 2.0. Always attempt to blacklist IRNSS to verify that the new enum is
+    // supported.
+    IGnssConfiguration::BlacklistedSource source_to_blacklist_2;
+    source_to_blacklist_2.constellation = GnssConstellationType::IRNSS;
+    source_to_blacklist_2.svid = 0;  // documented wildcard for all satellites in this constellation
+
+    auto gnss_configuration_hal_return = gnss_hal_->getExtensionGnssConfiguration_2_1();
+    ASSERT_TRUE(gnss_configuration_hal_return.isOk());
+    sp<IGnssConfiguration> gnss_configuration_hal = gnss_configuration_hal_return;
+    ASSERT_NE(gnss_configuration_hal, nullptr);
+
+    hidl_vec<IGnssConfiguration::BlacklistedSource> sources;
+    sources.resize(2);
+    sources[0] = source_to_blacklist_1;
+    sources[1] = source_to_blacklist_2;
+
+    auto result = gnss_configuration_hal->setBlacklist_2_1(sources);
+    ASSERT_TRUE(result.isOk());
+    EXPECT_TRUE(result);
+
+    // Turns off location
+    StopAndClearLocations();
+
+    // retry and ensure constellation not used
+    gnss_cb_->sv_info_list_cbq_.reset();
+
+    gnss_cb_->location_cbq_.reset();
+    StartAndCheckLocations(kLocationsToAwait);
+
+    // Tolerate 1 less sv status to handle edge cases in reporting.
+    int sv_info_list_cbq_size = gnss_cb_->sv_info_list_cbq_.size();
+    EXPECT_GE(sv_info_list_cbq_size + 1, kLocationsToAwait);
+    ALOGD("Observed %d GnssSvInfo, while awaiting %d Locations", sv_info_list_cbq_size,
+          kLocationsToAwait);
+    for (int i = 0; i < sv_info_list_cbq_size; ++i) {
+        hidl_vec<IGnssCallback_2_1::GnssSvInfo> sv_info_vec;
+        gnss_cb_->sv_info_list_cbq_.retrieve(sv_info_vec, kGnssSvInfoListTimeout);
+        for (uint32_t iSv = 0; iSv < sv_info_vec.size(); iSv++) {
+            const auto& gnss_sv = sv_info_vec[iSv];
+            EXPECT_FALSE((gnss_sv.v2_0.constellation == source_to_blacklist_1.constellation) &&
+                         (gnss_sv.v2_0.v1_0.svFlag & IGnssCallback_1_0::GnssSvFlags::USED_IN_FIX));
+            EXPECT_FALSE((gnss_sv.v2_0.constellation == source_to_blacklist_2.constellation) &&
+                         (gnss_sv.v2_0.v1_0.svFlag & IGnssCallback_1_0::GnssSvFlags::USED_IN_FIX));
+        }
+    }
+
+    // clean up
+    StopAndClearLocations();
+    sources.resize(0);
+    result = gnss_configuration_hal->setBlacklist_2_1(sources);
+    ASSERT_TRUE(result.isOk());
+    EXPECT_TRUE(result);
+}
+
+/*
+ * TestGnssMeasurementCorrections:
+ * If measurement corrections capability is supported, verifies that it supports the
+ * gnss.measurement_corrections@1.1::IMeasurementCorrections interface by invoking a method.
+ */
+TEST_P(GnssHalTest, TestGnssMeasurementCorrections) {
+    if (!(gnss_cb_->last_capabilities_ &
+          IGnssCallback_2_1::Capabilities::MEASUREMENT_CORRECTIONS)) {
+        return;
+    }
+
+    // Verify IMeasurementCorrections is supported.
+    auto measurementCorrections = gnss_hal_->getExtensionMeasurementCorrections_1_1();
+    ASSERT_TRUE(measurementCorrections.isOk());
+    sp<IMeasurementCorrections_1_1> iMeasurementCorrections = measurementCorrections;
+    ASSERT_NE(iMeasurementCorrections, nullptr);
+
+    sp<GnssMeasurementCorrectionsCallback> callback = new GnssMeasurementCorrectionsCallback();
+    iMeasurementCorrections->setCallback(callback);
+
+    const int kMeasurementCorrectionsCapabilitiesTimeoutSeconds = 5;
+    callback->capabilities_cbq_.retrieve(callback->last_capabilities_,
+                                         kMeasurementCorrectionsCapabilitiesTimeoutSeconds);
+    ASSERT_TRUE(callback->capabilities_cbq_.calledCount() > 0);
+
+    // Set a mock MeasurementCorrections.
+    auto result =
+            iMeasurementCorrections->setCorrections_1_1(Utils::getMockMeasurementCorrections_1_1());
+    ASSERT_TRUE(result.isOk());
+    EXPECT_TRUE(result);
+}
\ No newline at end of file
diff --git a/gnss/common/utils/default/Android.bp b/gnss/common/utils/default/Android.bp
index 4ea97fa..577f6ae 100644
--- a/gnss/common/utils/default/Android.bp
+++ b/gnss/common/utils/default/Android.bp
@@ -28,6 +28,10 @@
     ],
     export_include_dirs: ["include"],
     shared_libs: [
+        "libhidlbase",
+        "libutils",
         "android.hardware.gnss@1.0",
+        "android.hardware.gnss@2.0",
+        "android.hardware.gnss@2.1",
     ],
 }
diff --git a/gnss/common/utils/default/Utils.cpp b/gnss/common/utils/default/Utils.cpp
index b9a06e8..0cdc865 100644
--- a/gnss/common/utils/default/Utils.cpp
+++ b/gnss/common/utils/default/Utils.cpp
@@ -16,6 +16,7 @@
 
 #include <Constants.h>
 #include <Utils.h>
+#include <utils/SystemClock.h>
 
 namespace android {
 namespace hardware {
@@ -23,31 +24,214 @@
 namespace common {
 
 using GnssSvFlags = V1_0::IGnssCallback::GnssSvFlags;
+using GnssMeasurementFlagsV1_0 = V1_0::IGnssMeasurementCallback::GnssMeasurementFlags;
+using GnssMeasurementFlagsV2_1 = V2_1::IGnssMeasurementCallback::GnssMeasurementFlags;
+using GnssMeasurementStateV2_0 = V2_0::IGnssMeasurementCallback::GnssMeasurementState;
+using ElapsedRealtime = V2_0::ElapsedRealtime;
+using ElapsedRealtimeFlags = V2_0::ElapsedRealtimeFlags;
+using GnssConstellationTypeV2_0 = V2_0::GnssConstellationType;
+using IGnssMeasurementCallbackV2_0 = V2_0::IGnssMeasurementCallback;
+using GnssSignalType = V2_1::GnssSignalType;
 
-GnssLocation Utils::getMockLocation() {
-    GnssLocation location = {.gnssLocationFlags = 0xFF,
-                             .latitudeDegrees = kMockLatitudeDegrees,
-                             .longitudeDegrees = kMockLongitudeDegrees,
-                             .altitudeMeters = kMockAltitudeMeters,
-                             .speedMetersPerSec = kMockSpeedMetersPerSec,
-                             .bearingDegrees = kMockBearingDegrees,
-                             .horizontalAccuracyMeters = kMockHorizontalAccuracyMeters,
-                             .verticalAccuracyMeters = kMockVerticalAccuracyMeters,
-                             .speedAccuracyMetersPerSecond = kMockSpeedAccuracyMetersPerSecond,
-                             .bearingAccuracyDegrees = kMockBearingAccuracyDegrees,
-                             .timestamp = kMockTimestamp};
+GnssDataV2_1 Utils::getMockMeasurementV2_1() {
+    GnssDataV2_0 gnssDataV2_0 = Utils::getMockMeasurementV2_0();
+    V2_1::IGnssMeasurementCallback::GnssMeasurement gnssMeasurementV2_1 = {
+            .v2_0 = gnssDataV2_0.measurements[0],
+            .flags = (uint32_t)(GnssMeasurementFlagsV2_1::HAS_CARRIER_FREQUENCY |
+                                GnssMeasurementFlagsV2_1::HAS_CARRIER_PHASE |
+                                GnssMeasurementFlagsV2_1::HAS_RECEIVER_ISB |
+                                GnssMeasurementFlagsV2_1::HAS_RECEIVER_ISB_UNCERTAINTY |
+                                GnssMeasurementFlagsV2_1::HAS_SATELLITE_ISB |
+                                GnssMeasurementFlagsV2_1::HAS_SATELLITE_ISB_UNCERTAINTY),
+            .receiverInterSignalBiasNs = 10.0,
+            .receiverInterSignalBiasUncertaintyNs = 100.0,
+            .satelliteInterSignalBiasNs = 20.0,
+            .satelliteInterSignalBiasUncertaintyNs = 150.0,
+            .basebandCN0DbHz = 25.0,
+    };
+    GnssSignalType referenceSignalTypeForIsb = {
+            .constellation = GnssConstellationTypeV2_0::GPS,
+            .carrierFrequencyHz = 1.59975e+09,
+            .codeType = "C",
+    };
+    V2_1::IGnssMeasurementCallback::GnssClock gnssClockV2_1 = {
+            .v1_0 = gnssDataV2_0.clock,
+            .referenceSignalTypeForIsb = referenceSignalTypeForIsb,
+    };
+    hidl_vec<V2_1::IGnssMeasurementCallback::GnssMeasurement> measurements(1);
+    measurements[0] = gnssMeasurementV2_1;
+    GnssDataV2_1 gnssDataV2_1 = {
+            .measurements = measurements,
+            .clock = gnssClockV2_1,
+            .elapsedRealtime = gnssDataV2_0.elapsedRealtime,
+    };
+    return gnssDataV2_1;
+}
+
+GnssDataV2_0 Utils::getMockMeasurementV2_0() {
+    V1_0::IGnssMeasurementCallback::GnssMeasurement measurement_1_0 = {
+            .flags = (uint32_t)GnssMeasurementFlagsV1_0::HAS_CARRIER_FREQUENCY,
+            .svid = (int16_t)6,
+            .constellation = V1_0::GnssConstellationType::UNKNOWN,
+            .timeOffsetNs = 0.0,
+            .receivedSvTimeInNs = 8195997131077,
+            .receivedSvTimeUncertaintyInNs = 15,
+            .cN0DbHz = 30.0,
+            .pseudorangeRateMps = -484.13739013671875,
+            .pseudorangeRateUncertaintyMps = 1.0379999876022339,
+            .accumulatedDeltaRangeState = (uint32_t)V1_0::IGnssMeasurementCallback::
+                    GnssAccumulatedDeltaRangeState::ADR_STATE_UNKNOWN,
+            .accumulatedDeltaRangeM = 0.0,
+            .accumulatedDeltaRangeUncertaintyM = 0.0,
+            .carrierFrequencyHz = 1.59975e+09,
+            .multipathIndicator =
+                    V1_0::IGnssMeasurementCallback::GnssMultipathIndicator::INDICATOR_UNKNOWN};
+    V1_1::IGnssMeasurementCallback::GnssMeasurement measurement_1_1 = {.v1_0 = measurement_1_0};
+    V2_0::IGnssMeasurementCallback::GnssMeasurement measurement_2_0 = {
+            .v1_1 = measurement_1_1,
+            .codeType = "C",
+            .state = GnssMeasurementStateV2_0::STATE_CODE_LOCK |
+                     GnssMeasurementStateV2_0::STATE_BIT_SYNC |
+                     GnssMeasurementStateV2_0::STATE_SUBFRAME_SYNC |
+                     GnssMeasurementStateV2_0::STATE_TOW_DECODED |
+                     GnssMeasurementStateV2_0::STATE_GLO_STRING_SYNC |
+                     GnssMeasurementStateV2_0::STATE_GLO_TOD_DECODED,
+            .constellation = GnssConstellationTypeV2_0::GLONASS,
+    };
+
+    hidl_vec<IGnssMeasurementCallbackV2_0::GnssMeasurement> measurements(1);
+    measurements[0] = measurement_2_0;
+    V1_0::IGnssMeasurementCallback::GnssClock clock = {.timeNs = 2713545000000,
+                                                       .fullBiasNs = -1226701900521857520,
+                                                       .biasNs = 0.59689998626708984,
+                                                       .biasUncertaintyNs = 47514.989972114563,
+                                                       .driftNsps = -51.757811607455452,
+                                                       .driftUncertaintyNsps = 310.64968328491528,
+                                                       .hwClockDiscontinuityCount = 1};
+
+    ElapsedRealtime timestamp = {
+            .flags = ElapsedRealtimeFlags::HAS_TIMESTAMP_NS |
+                     ElapsedRealtimeFlags::HAS_TIME_UNCERTAINTY_NS,
+            .timestampNs = static_cast<uint64_t>(::android::elapsedRealtimeNano()),
+            // This is an hardcoded value indicating a 1ms of uncertainty between the two clocks.
+            // In an actual implementation provide an estimate of the synchronization uncertainty
+            // or don't set the field.
+            .timeUncertaintyNs = 1000000};
+
+    GnssDataV2_0 gnssData = {
+            .measurements = measurements, .clock = clock, .elapsedRealtime = timestamp};
+    return gnssData;
+}
+
+V2_0::GnssLocation Utils::getMockLocationV2_0() {
+    const V2_0::ElapsedRealtime timestamp = {
+            .flags = V2_0::ElapsedRealtimeFlags::HAS_TIMESTAMP_NS |
+                     V2_0::ElapsedRealtimeFlags::HAS_TIME_UNCERTAINTY_NS,
+            .timestampNs = static_cast<uint64_t>(::android::elapsedRealtimeNano()),
+            // This is an hardcoded value indicating a 1ms of uncertainty between the two clocks.
+            // In an actual implementation provide an estimate of the synchronization uncertainty
+            // or don't set the field.
+            .timeUncertaintyNs = 1000000};
+
+    V2_0::GnssLocation location = {.v1_0 = Utils::getMockLocationV1_0(),
+                                   .elapsedRealtime = timestamp};
     return location;
 }
 
-GnssSvInfo Utils::getSvInfo(int16_t svid, GnssConstellationType type, float cN0DbHz,
-                            float elevationDegrees, float azimuthDegrees) {
-    GnssSvInfo svInfo = {.svid = svid,
-                         .constellation = type,
-                         .cN0Dbhz = cN0DbHz,
-                         .elevationDegrees = elevationDegrees,
-                         .azimuthDegrees = azimuthDegrees,
-                         .svFlag = GnssSvFlags::USED_IN_FIX | GnssSvFlags::HAS_EPHEMERIS_DATA |
-                                   GnssSvFlags::HAS_ALMANAC_DATA};
+V1_0::GnssLocation Utils::getMockLocationV1_0() {
+    V1_0::GnssLocation location = {
+            .gnssLocationFlags = 0xFF,
+            .latitudeDegrees = kMockLatitudeDegrees,
+            .longitudeDegrees = kMockLongitudeDegrees,
+            .altitudeMeters = kMockAltitudeMeters,
+            .speedMetersPerSec = kMockSpeedMetersPerSec,
+            .bearingDegrees = kMockBearingDegrees,
+            .horizontalAccuracyMeters = kMockHorizontalAccuracyMeters,
+            .verticalAccuracyMeters = kMockVerticalAccuracyMeters,
+            .speedAccuracyMetersPerSecond = kMockSpeedAccuracyMetersPerSecond,
+            .bearingAccuracyDegrees = kMockBearingAccuracyDegrees,
+            .timestamp = kMockTimestamp};
+    return location;
+}
+
+hidl_vec<GnssSvInfoV2_1> Utils::getMockSvInfoListV2_1() {
+    GnssSvInfoV1_0 gnssSvInfoV1_0 =
+            Utils::getMockSvInfoV1_0(3, V1_0::GnssConstellationType::GPS, 32.5, 59.1, 166.5);
+    GnssSvInfoV2_0 gnssSvInfoV2_0 =
+            Utils::getMockSvInfoV2_0(gnssSvInfoV1_0, V2_0::GnssConstellationType::GPS);
+    hidl_vec<GnssSvInfoV2_1> gnssSvInfoList = {
+            Utils::getMockSvInfoV2_1(gnssSvInfoV2_0, 27.5),
+            getMockSvInfoV2_1(
+                    getMockSvInfoV2_0(getMockSvInfoV1_0(5, V1_0::GnssConstellationType::GPS, 27.0,
+                                                        29.0, 56.5),
+                                      V2_0::GnssConstellationType::GPS),
+                    22.0),
+            getMockSvInfoV2_1(
+                    getMockSvInfoV2_0(getMockSvInfoV1_0(17, V1_0::GnssConstellationType::GPS, 30.5,
+                                                        71.0, 77.0),
+                                      V2_0::GnssConstellationType::GPS),
+                    25.5),
+            getMockSvInfoV2_1(
+                    getMockSvInfoV2_0(getMockSvInfoV1_0(26, V1_0::GnssConstellationType::GPS, 24.1,
+                                                        28.0, 253.0),
+                                      V2_0::GnssConstellationType::GPS),
+                    19.1),
+            getMockSvInfoV2_1(
+                    getMockSvInfoV2_0(getMockSvInfoV1_0(5, V1_0::GnssConstellationType::GLONASS,
+                                                        20.5, 11.5, 116.0),
+                                      V2_0::GnssConstellationType::GLONASS),
+                    15.5),
+            getMockSvInfoV2_1(
+                    getMockSvInfoV2_0(getMockSvInfoV1_0(17, V1_0::GnssConstellationType::GLONASS,
+                                                        21.5, 28.5, 186.0),
+                                      V2_0::GnssConstellationType::GLONASS),
+                    16.5),
+            getMockSvInfoV2_1(
+                    getMockSvInfoV2_0(getMockSvInfoV1_0(18, V1_0::GnssConstellationType::GLONASS,
+                                                        28.3, 38.8, 69.0),
+                                      V2_0::GnssConstellationType::GLONASS),
+                    25.3),
+            getMockSvInfoV2_1(
+                    getMockSvInfoV2_0(getMockSvInfoV1_0(10, V1_0::GnssConstellationType::GLONASS,
+                                                        25.0, 66.0, 247.0),
+                                      V2_0::GnssConstellationType::GLONASS),
+                    20.0),
+            getMockSvInfoV2_1(
+                    getMockSvInfoV2_0(getMockSvInfoV1_0(3, V1_0::GnssConstellationType::UNKNOWN,
+                                                        22.0, 35.0, 112.0),
+                                      V2_0::GnssConstellationType::IRNSS),
+                    19.7),
+    };
+    return gnssSvInfoList;
+}
+
+GnssSvInfoV2_1 Utils::getMockSvInfoV2_1(GnssSvInfoV2_0 gnssSvInfoV2_0, float basebandCN0DbHz) {
+    GnssSvInfoV2_1 gnssSvInfoV2_1 = {
+            .v2_0 = gnssSvInfoV2_0,
+            .basebandCN0DbHz = basebandCN0DbHz,
+    };
+    return gnssSvInfoV2_1;
+}
+
+GnssSvInfoV2_0 Utils::getMockSvInfoV2_0(GnssSvInfoV1_0 gnssSvInfoV1_0,
+                                        V2_0::GnssConstellationType type) {
+    GnssSvInfoV2_0 gnssSvInfoV2_0 = {
+            .v1_0 = gnssSvInfoV1_0,
+            .constellation = type,
+    };
+    return gnssSvInfoV2_0;
+}
+
+GnssSvInfoV1_0 Utils::getMockSvInfoV1_0(int16_t svid, V1_0::GnssConstellationType type,
+                                        float cN0DbHz, float elevationDegrees,
+                                        float azimuthDegrees) {
+    GnssSvInfoV1_0 svInfo = {.svid = svid,
+                             .constellation = type,
+                             .cN0Dbhz = cN0DbHz,
+                             .elevationDegrees = elevationDegrees,
+                             .azimuthDegrees = azimuthDegrees,
+                             .svFlag = GnssSvFlags::USED_IN_FIX | GnssSvFlags::HAS_EPHEMERIS_DATA |
+                                       GnssSvFlags::HAS_ALMANAC_DATA};
     return svInfo;
 }
 
diff --git a/gnss/common/utils/default/include/Utils.h b/gnss/common/utils/default/include/Utils.h
index 47c8812..e0c61a4 100644
--- a/gnss/common/utils/default/include/Utils.h
+++ b/gnss/common/utils/default/include/Utils.h
@@ -18,20 +18,34 @@
 #define android_hardware_gnss_common_default_Utils_H_
 
 #include <android/hardware/gnss/1.0/IGnss.h>
+#include <android/hardware/gnss/2.0/IGnss.h>
+#include <android/hardware/gnss/2.1/IGnss.h>
 
-using GnssConstellationType = ::android::hardware::gnss::V1_0::GnssConstellationType;
-using GnssLocation = ::android::hardware::gnss::V1_0::GnssLocation;
-using GnssSvInfo = ::android::hardware::gnss::V1_0::IGnssCallback::GnssSvInfo;
+using ::android::hardware::hidl_vec;
 
 namespace android {
 namespace hardware {
 namespace gnss {
 namespace common {
 
+using GnssDataV2_0 = V2_0::IGnssMeasurementCallback::GnssData;
+using GnssDataV2_1 = V2_1::IGnssMeasurementCallback::GnssData;
+using GnssSvInfoV1_0 = V1_0::IGnssCallback::GnssSvInfo;
+using GnssSvInfoV2_0 = V2_0::IGnssCallback::GnssSvInfo;
+using GnssSvInfoV2_1 = V2_1::IGnssCallback::GnssSvInfo;
+
 struct Utils {
-    static GnssLocation getMockLocation();
-    static GnssSvInfo getSvInfo(int16_t svid, GnssConstellationType type, float cN0DbHz,
-                                float elevationDegrees, float azimuthDegrees);
+    static GnssDataV2_0 getMockMeasurementV2_0();
+    static GnssDataV2_1 getMockMeasurementV2_1();
+    static V2_0::GnssLocation getMockLocationV2_0();
+    static V1_0::GnssLocation getMockLocationV1_0();
+    static hidl_vec<GnssSvInfoV2_1> getMockSvInfoListV2_1();
+    static GnssSvInfoV2_1 getMockSvInfoV2_1(GnssSvInfoV2_0 gnssSvInfoV2_0, float basebandCN0DbHz);
+    static GnssSvInfoV2_0 getMockSvInfoV2_0(GnssSvInfoV1_0 gnssSvInfoV1_0,
+                                            V2_0::GnssConstellationType type);
+    static GnssSvInfoV1_0 getMockSvInfoV1_0(int16_t svid, V1_0::GnssConstellationType type,
+                                            float cN0DbHz, float elevationDegrees,
+                                            float azimuthDegrees);
 };
 
 }  // namespace common
diff --git a/gnss/common/utils/vts/Android.bp b/gnss/common/utils/vts/Android.bp
index 1988171..fd9613b 100644
--- a/gnss/common/utils/vts/Android.bp
+++ b/gnss/common/utils/vts/Android.bp
@@ -30,6 +30,7 @@
     shared_libs: [
         "android.hardware.gnss@1.0",
         "android.hardware.gnss.measurement_corrections@1.0",
+        "android.hardware.gnss.measurement_corrections@1.1",
     ],
     static_libs: [
         "libgtest",
diff --git a/gnss/common/utils/vts/Utils.cpp b/gnss/common/utils/vts/Utils.cpp
index 51d3ea1..b6c3f5e 100644
--- a/gnss/common/utils/vts/Utils.cpp
+++ b/gnss/common/utils/vts/Utils.cpp
@@ -92,7 +92,7 @@
     EXPECT_GT(location.timestamp, 1.48e12);
 }
 
-const MeasurementCorrections Utils::getMockMeasurementCorrections() {
+const MeasurementCorrections_1_0 Utils::getMockMeasurementCorrections() {
     ReflectingPlane reflectingPlane = {
             .latitudeDegrees = 37.4220039,
             .longitudeDegrees = -122.0840991,
@@ -127,7 +127,7 @@
 
     hidl_vec<SingleSatCorrection> singleSatCorrections = {singleSatCorrection1,
                                                           singleSatCorrection2};
-    MeasurementCorrections mockCorrections = {
+    MeasurementCorrections_1_0 mockCorrections = {
             .latitudeDegrees = 37.4219999,
             .longitudeDegrees = -122.0840575,
             .altitudeMeters = 30.60062531,
@@ -139,6 +139,18 @@
     return mockCorrections;
 }
 
+const MeasurementCorrections_1_1 Utils::getMockMeasurementCorrections_1_1() {
+    MeasurementCorrections_1_0 mockCorrections_1_0 = getMockMeasurementCorrections();
+
+    MeasurementCorrections_1_1 mockCorrections_1_1 = {
+            .v1_0 = mockCorrections_1_0,
+            .hasEnvironmentBearing = true,
+            .environmentBearingDegrees = 45.0,
+            .environmentBearingUncertaintyDegrees = 4.0,
+    };
+    return mockCorrections_1_1;
+}
+
 }  // namespace common
 }  // namespace gnss
 }  // namespace hardware
diff --git a/gnss/common/utils/vts/include/GnssCallbackEventQueue.h b/gnss/common/utils/vts/include/GnssCallbackEventQueue.h
new file mode 100644
index 0000000..3dc429b
--- /dev/null
+++ b/gnss/common/utils/vts/include/GnssCallbackEventQueue.h
@@ -0,0 +1,140 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef android_hardware_gnss_common_vts_GnssCallbackEventQueue_H_
+#define android_hardware_gnss_common_vts_GnssCallbackEventQueue_H_
+
+#include <log/log.h>
+
+#include <condition_variable>
+#include <deque>
+#include <list>
+#include <mutex>
+
+namespace android {
+namespace hardware {
+namespace gnss {
+namespace common {
+
+/*
+ * Producer/consumer queue for storing/retrieving callback events from GNSS HAL.
+ */
+template <class T>
+class GnssCallbackEventQueue {
+  public:
+    GnssCallbackEventQueue(const std::string& name) : name_(name), called_count_(0){};
+    ~GnssCallbackEventQueue() { reset(); }
+
+    /* Adds callback event to the end of the queue. */
+    void store(const T& event);
+
+    /*
+     * Removes the callack event at the front of the queue, stores it in event parameter
+     * and returns true. Returns false on timeout and event is not populated.
+     */
+    bool retrieve(T& event, int timeout_seconds);
+
+    /*
+     * Removes parameter count number of callack events at the front of the queue, stores
+     * them in event_list parameter and returns the number of events retrieved. Waits up to
+     * timeout_seconds to retrieve each event. If timeout occurs, it returns the number of
+     * items retrieved which will be less than count.
+     */
+    int retrieve(std::list<T>& event_list, int count, int timeout_seconds);
+
+    /* Returns the number of events pending to be retrieved from the callback event queue. */
+    int size() const;
+
+    /* Returns the number of callback events received since last reset(). */
+    int calledCount() const;
+
+    /* Clears the callback event queue and resets the calledCount() to 0. */
+    void reset();
+
+  private:
+    GnssCallbackEventQueue(const GnssCallbackEventQueue&) = delete;
+    GnssCallbackEventQueue& operator=(const GnssCallbackEventQueue&) = delete;
+
+    std::string name_;
+    int called_count_;
+    mutable std::recursive_mutex mtx_;
+    std::condition_variable_any cv_;
+    std::deque<T> events_;
+};
+
+template <class T>
+void GnssCallbackEventQueue<T>::store(const T& event) {
+    std::unique_lock<std::recursive_mutex> lock(mtx_);
+    events_.push_back(event);
+    ++called_count_;
+    lock.unlock();
+    cv_.notify_all();
+}
+
+template <class T>
+bool GnssCallbackEventQueue<T>::retrieve(T& event, int timeout_seconds) {
+    std::unique_lock<std::recursive_mutex> lock(mtx_);
+    cv_.wait_for(lock, std::chrono::seconds(timeout_seconds), [&] { return !events_.empty(); });
+    if (events_.empty()) {
+        return false;
+    }
+    event = events_.front();
+    events_.pop_front();
+    return true;
+}
+
+template <class T>
+int GnssCallbackEventQueue<T>::retrieve(std::list<T>& event_list, int count, int timeout_seconds) {
+    for (int i = 0; i < count; ++i) {
+        T event;
+        if (!retrieve(event, timeout_seconds)) {
+            return i;
+        }
+        event_list.push_back(event);
+    }
+
+    return count;
+}
+
+template <class T>
+int GnssCallbackEventQueue<T>::size() const {
+    std::unique_lock<std::recursive_mutex> lock(mtx_);
+    return events_.size();
+}
+
+template <class T>
+int GnssCallbackEventQueue<T>::calledCount() const {
+    std::unique_lock<std::recursive_mutex> lock(mtx_);
+    return called_count_;
+}
+
+template <class T>
+void GnssCallbackEventQueue<T>::reset() {
+    std::unique_lock<std::recursive_mutex> lock(mtx_);
+    if (!events_.empty()) {
+        ALOGW("%u unprocessed events discarded in callback queue %s", (unsigned int)events_.size(),
+              name_.c_str());
+    }
+    events_.clear();
+    called_count_ = 0;
+}
+
+}  // namespace common
+}  // namespace gnss
+}  // namespace hardware
+}  // namespace android
+
+#endif  // android_hardware_gnss_common_vts_GnssCallbackEventQueue_H_
diff --git a/gnss/common/utils/vts/include/Utils.h b/gnss/common/utils/vts/include/Utils.h
index dce4c7b..781ad42 100644
--- a/gnss/common/utils/vts/include/Utils.h
+++ b/gnss/common/utils/vts/include/Utils.h
@@ -19,10 +19,16 @@
 
 #include <android/hardware/gnss/1.0/IGnss.h>
 #include <android/hardware/gnss/measurement_corrections/1.0/IMeasurementCorrections.h>
+#include <android/hardware/gnss/measurement_corrections/1.1/IMeasurementCorrections.h>
 
 using GnssLocation = ::android::hardware::gnss::V1_0::GnssLocation;
 using namespace android::hardware::gnss::measurement_corrections::V1_0;
 
+using MeasurementCorrections_1_0 =
+        android::hardware::gnss::measurement_corrections::V1_0::MeasurementCorrections;
+using MeasurementCorrections_1_1 =
+        android::hardware::gnss::measurement_corrections::V1_1::MeasurementCorrections;
+
 namespace android {
 namespace hardware {
 namespace gnss {
@@ -31,7 +37,8 @@
 struct Utils {
     static void checkLocation(const GnssLocation& location, bool check_speed,
                               bool check_more_accuracies);
-    static const MeasurementCorrections getMockMeasurementCorrections();
+    static const MeasurementCorrections_1_0 getMockMeasurementCorrections();
+    static const MeasurementCorrections_1_1 getMockMeasurementCorrections_1_1();
 };
 
 }  // namespace common
diff --git a/gnss/measurement_corrections/1.1/Android.bp b/gnss/measurement_corrections/1.1/Android.bp
new file mode 100644
index 0000000..1d69f20
--- /dev/null
+++ b/gnss/measurement_corrections/1.1/Android.bp
@@ -0,0 +1,19 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.gnss.measurement_corrections@1.1",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "types.hal",
+        "IMeasurementCorrections.hal",
+    ],
+    interfaces: [
+        "android.hardware.gnss.measurement_corrections@1.0",
+        "android.hardware.gnss@1.0",
+        "android.hidl.base@1.0",
+    ],
+    gen_java: true,
+}
diff --git a/gnss/measurement_corrections/1.1/IMeasurementCorrections.hal b/gnss/measurement_corrections/1.1/IMeasurementCorrections.hal
new file mode 100644
index 0000000..9461a5e
--- /dev/null
+++ b/gnss/measurement_corrections/1.1/IMeasurementCorrections.hal
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.gnss.measurement_corrections@1.1;
+
+import @1.0::IMeasurementCorrections;
+
+/**
+ * Interface for measurement corrections support.
+ */
+interface IMeasurementCorrections extends @1.0::IMeasurementCorrections {
+    /**
+     * Injects measurement corrections to be used by the HAL to improve the GNSS location output.
+     *
+     * These are NOT to be used to adjust the IGnssMeasurementCallback output values -
+     * those remain raw, uncorrected measurements.
+     *
+     * In general, these are injected when conditions defined by the platform are met, such as when
+     * GNSS Location is being requested at a sufficiently high accuracy, based on the capabilities
+     * of the GNSS chipset as reported in the IGnssCallback.
+     *
+     * @param corrections The computed corrections to be used by the HAL.
+     *
+     * @return success Whether the HAL can accept & use these corrections.
+     */
+    setCorrections_1_1(MeasurementCorrections corrections) generates (bool success);
+};
\ No newline at end of file
diff --git a/gnss/measurement_corrections/1.1/types.hal b/gnss/measurement_corrections/1.1/types.hal
new file mode 100644
index 0000000..40b6f52
--- /dev/null
+++ b/gnss/measurement_corrections/1.1/types.hal
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.gnss.measurement_corrections@1.1;
+
+import @1.0::MeasurementCorrections;
+
+/**
+ * A struct containing a set of measurement corrections for all used GNSS satellites at the location
+ * specified by latitudeDegrees, longitudeDegrees, altitudeMeters and at the time of week specified
+ * toaGpsNanosecondsOfWeek
+ */
+struct MeasurementCorrections {
+    @1.0::MeasurementCorrections v1_0;
+
+    /**
+     * Boolean indicating if environment bearing is available.
+     */
+    bool hasEnvironmentBearing;
+
+    /**
+     * Environment bearing in degrees clockwise from true North (0.0 to 360.0], in direction of
+     * user motion. Environment bearing is provided when it is known with high probability that
+     * velocity is aligned with an environment feature, such as a building or road.
+     *
+     * If user speed is zero, environmentBearingDegrees represents bearing of most recent speed
+     * that was > 0.
+     *
+     * As position approaches another road, environmentBearingUncertaintyDegrees will grow, and at
+     * some stage hasEnvironmentBearing = false.
+     *
+     * As position moves towards an open area, environmentBearingUncertaintyDegrees will grow, and
+     * at some stage hasEnvironmentBearing = false.
+     *
+     * If the road is curved in the vicinity of the user location, then
+     * environmentBearingUncertaintyDegrees will include the amount by which the road direction
+     * changes in the area of position uncertainty.
+     */
+    float environmentBearingDegrees;
+
+    /**
+     * Bearing uncertainty [0 to 180].
+     */
+    float environmentBearingUncertaintyDegrees;
+};
\ No newline at end of file
diff --git a/graphics/allocator/4.0/Android.bp b/graphics/allocator/4.0/Android.bp
new file mode 100644
index 0000000..f5f9458
--- /dev/null
+++ b/graphics/allocator/4.0/Android.bp
@@ -0,0 +1,20 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.graphics.allocator@4.0",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "IAllocator.hal",
+    ],
+    interfaces: [
+        "android.hardware.graphics.common@1.0",
+        "android.hardware.graphics.common@1.1",
+        "android.hardware.graphics.common@1.2",
+        "android.hardware.graphics.mapper@4.0",
+        "android.hidl.base@1.0",
+    ],
+    gen_java: false,
+}
diff --git a/graphics/allocator/4.0/IAllocator.hal b/graphics/allocator/4.0/IAllocator.hal
new file mode 100644
index 0000000..7934867
--- /dev/null
+++ b/graphics/allocator/4.0/IAllocator.hal
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.allocator@4.0;
+
+import android.hardware.graphics.mapper@4.0;
+
+interface IAllocator {
+    /**
+     * Allocates buffers with the properties specified by the descriptor.
+     *
+     * Allocations should be optimized for usage bits provided in the
+     * descriptor.
+     *
+     * @param descriptor Properties of the buffers to allocate. This must be
+     *     obtained from IMapper::createDescriptor().
+     * @param count The number of buffers to allocate.
+     * @return error Error status of the call, which may be
+     *     - `NONE` upon success.
+     *     - `BAD_DESCRIPTOR` if the descriptor is invalid.
+     *     - `NO_RESOURCES` if the allocation cannot be fulfilled at this time.
+     *     - `UNSUPPORTED` if any of the properties encoded in the descriptor
+     *       are not supported.
+     * @return stride The number of pixels between two consecutive rows of
+     *     an allocated buffer, when the concept of consecutive rows is defined.
+     *     Otherwise, it has no meaning.
+     * @return buffers Array of raw handles to the allocated buffers.
+     */
+    allocate(BufferDescriptor descriptor, uint32_t count)
+        generates (Error error,
+                   uint32_t stride,
+                   vec<handle> buffers);
+};
+
diff --git a/graphics/common/aidl/Android.bp b/graphics/common/aidl/Android.bp
new file mode 100644
index 0000000..601cabc
--- /dev/null
+++ b/graphics/common/aidl/Android.bp
@@ -0,0 +1,24 @@
+aidl_interface {
+    name: "android.hardware.graphics.common",
+    host_supported: true,
+    vendor_available: true,
+    vndk: {
+        enabled: true,
+        support_system_process: true,
+    },
+    srcs: [
+        "android/hardware/graphics/common/*.aidl",
+    ],
+    stability: "vintf",
+    imports: [
+        "android.hardware.common",
+    ],
+    backend: {
+        java: {
+            enabled: false,
+        },
+        cpp: {
+            enabled: false,
+        },
+    },
+}
diff --git a/graphics/common/aidl/android/hardware/graphics/common/BlendMode.aidl b/graphics/common/aidl/android/hardware/graphics/common/BlendMode.aidl
new file mode 100644
index 0000000..2428135
--- /dev/null
+++ b/graphics/common/aidl/android/hardware/graphics/common/BlendMode.aidl
@@ -0,0 +1,35 @@
+/**
+ * Copyright (c) 2019, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.common;
+
+/**
+ * Blend modes, settable per layer.
+ */
+@VintfStability
+@Backing(type="int")
+enum BlendMode {
+    INVALID = 0,
+
+    /** colorOut = colorSrc */
+    NONE = 1,
+
+    /** colorOut = colorSrc + colorDst * (1 - alphaSrc) */
+    PREMULTIPLIED = 2,
+
+    /** colorOut = colorSrc * alphaSrc + colorDst * (1 - alphaSrc) */
+    COVERAGE = 3,
+}
diff --git a/graphics/common/aidl/android/hardware/graphics/common/BufferUsage.aidl b/graphics/common/aidl/android/hardware/graphics/common/BufferUsage.aidl
new file mode 100644
index 0000000..5f9888a
--- /dev/null
+++ b/graphics/common/aidl/android/hardware/graphics/common/BufferUsage.aidl
@@ -0,0 +1,114 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.common;
+
+/**
+ * Buffer usage definitions.
+ */
+@VintfStability
+@Backing(type="long")
+enum BufferUsage {
+    /** bit 0-3 is an enum */
+    CPU_READ_MASK                      = 0xf,
+    /** buffer is never read by CPU */
+    CPU_READ_NEVER                     = 0,
+    /** buffer is rarely read by CPU */
+    CPU_READ_RARELY                    = 2,
+    /** buffer is often read by CPU */
+    CPU_READ_OFTEN                     = 3,
+
+    /** bit 4-7 is an enum */
+    CPU_WRITE_MASK                     = 0xf << 4,
+    /** buffer is never written by CPU */
+    CPU_WRITE_NEVER                    = 0 << 4,
+    /** buffer is rarely written by CPU */
+    CPU_WRITE_RARELY                   = 2 << 4,
+    /** buffer is often written by CPU */
+    CPU_WRITE_OFTEN                    = 3 << 4,
+
+    /** buffer is used as a GPU texture */
+    GPU_TEXTURE                        = 1 << 8,
+
+    /** buffer is used as a GPU render target */
+    GPU_RENDER_TARGET                  = 1 << 9,
+
+    /** bit 10 must be zero */
+
+    /** buffer is used as a composer HAL overlay layer */
+    COMPOSER_OVERLAY                   = 1 << 11,
+    /** buffer is used as a composer HAL client target */
+    COMPOSER_CLIENT_TARGET             = 1 << 12,
+
+    /** bit 13 must be zero */
+
+    /**
+     * Buffer is allocated with hardware-level protection against copying the
+     * contents (or information derived from the contents) into unprotected
+     * memory.
+     */
+    PROTECTED                          = 1 << 14,
+
+    /** buffer is used as a hwcomposer HAL cursor layer */
+    COMPOSER_CURSOR                    = 1 << 15,
+
+    /** buffer is used as a video encoder input */
+    VIDEO_ENCODER                      = 1 << 16,
+
+    /** buffer is used as a camera HAL output */
+    CAMERA_OUTPUT                      = 1 << 17,
+
+    /** buffer is used as a camera HAL input */
+    CAMERA_INPUT                       = 1 << 18,
+
+    /** bit 19 must be zero */
+
+    /** buffer is used as a renderscript allocation */
+    RENDERSCRIPT                       = 1 << 20,
+
+    /** bit 21 must be zero */
+
+    /** buffer is used as a video decoder output */
+    VIDEO_DECODER                      = 1 << 22,
+
+    /** buffer is used as a sensor direct report output */
+    SENSOR_DIRECT_DATA                 = 1 << 23,
+
+    /** buffer is used as a cube map texture */
+    GPU_CUBE_MAP                       = 1 << 25,
+
+    /** buffer contains a complete mipmap hierarchy */
+    GPU_MIPMAP_COMPLETE                = 1 << 26,
+
+    /**
+     * Buffer is used as input for HEIC encoder.
+     */
+    HW_IMAGE_ENCODER                   = 1 << 27,
+
+    /**
+     * buffer is used as as an OpenGL shader storage or uniform
+     * buffer object
+     */
+    GPU_DATA_BUFFER                    = 1 << 24,
+
+    /** bits 25-27 must be zero and are reserved for future versions */
+    /** bits 28-31 are reserved for vendor extensions */
+    VENDOR_MASK                        = 0xf << 28,
+
+    /** bits 32-47 must be zero and are reserved for future versions */
+    /** bits 48-63 are reserved for vendor extensions */
+    VENDOR_MASK_HI                     = 0xffff << 48,
+}
diff --git a/graphics/common/aidl/android/hardware/graphics/common/ChromaSiting.aidl b/graphics/common/aidl/android/hardware/graphics/common/ChromaSiting.aidl
new file mode 100644
index 0000000..562a664
--- /dev/null
+++ b/graphics/common/aidl/android/hardware/graphics/common/ChromaSiting.aidl
@@ -0,0 +1,39 @@
+/**
+ * Copyright (c) 2019, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.common;
+
+/**
+ * Used by IAllocator/IMapper (gralloc) to describe standard chroma siting
+ */
+@VintfStability
+@Backing(type="long")
+enum ChromaSiting {
+    /* This format does not have chroma siting. */
+    NONE = 0,
+
+    /* This format has chroma siting but the type being used is unknown. */
+    UNKNOWN = 1,
+
+    /* Cb and Cr are sited interstitially, halfway between alternate luma samples.
+     * This is used by 4:2:0 for JPEG/JFIF, H.261, MPEG-1. */
+    SITED_INTERSTITIAL = 2,
+
+    /* Cb and Cr are horizontally sited coincident with a luma sample.
+     * Cb and Cr are vertically sited interstitially.
+     * This is used by 4:2:0 for MPEG-2 frame pictures. */
+    COSITED_HORIZONTAL = 3,
+}
diff --git a/graphics/common/aidl/android/hardware/graphics/common/Compression.aidl b/graphics/common/aidl/android/hardware/graphics/common/Compression.aidl
new file mode 100644
index 0000000..4cca1ba
--- /dev/null
+++ b/graphics/common/aidl/android/hardware/graphics/common/Compression.aidl
@@ -0,0 +1,30 @@
+/**
+ * Copyright (c) 2019, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.common;
+
+/**
+ * Used by IAllocator/IMapper (gralloc) to describe standard compression strategies
+ */
+@VintfStability
+@Backing(type="long")
+enum Compression {
+    /* Represents all uncompressed buffers */
+    NONE = 0,
+
+    /* VESA Display Stream Compression (DSC) */
+    DISPLAY_STREAM_COMPRESSION = 1,
+}
diff --git a/graphics/common/aidl/android/hardware/graphics/common/Cta861_3.aidl b/graphics/common/aidl/android/hardware/graphics/common/Cta861_3.aidl
new file mode 100644
index 0000000..4fbc6b2
--- /dev/null
+++ b/graphics/common/aidl/android/hardware/graphics/common/Cta861_3.aidl
@@ -0,0 +1,34 @@
+/**
+ * Copyright (c) 2019, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.common;
+
+/**
+ * HDR static metadata extension as specified by CTA-861.3.
+ *
+ * This is an AIDL counterpart of the NDK struct `AHdrMetadata_cta861_3`.
+ */
+@VintfStability
+parcelable Cta861_3 {
+    /**
+     * Maximum content light level.
+     */
+    float maxContentLightLevel;
+    /**
+     * Maximum frame average light level.
+     */
+    float maxFrameAverageLightLevel;
+}
diff --git a/graphics/common/aidl/android/hardware/graphics/common/Dataspace.aidl b/graphics/common/aidl/android/hardware/graphics/common/Dataspace.aidl
new file mode 100644
index 0000000..42cdd81
--- /dev/null
+++ b/graphics/common/aidl/android/hardware/graphics/common/Dataspace.aidl
@@ -0,0 +1,677 @@
+/**
+ * Copyright (c) 2019, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.common;
+
+@VintfStability
+@Backing(type="int")
+enum Dataspace {
+    /**
+     * Default-assumption data space, when not explicitly specified.
+     *
+     * It is safest to assume the buffer is an image with sRGB primaries and
+     * encoding ranges, but the consumer and/or the producer of the data may
+     * simply be using defaults. No automatic gamma transform should be
+     * expected, except for a possible display gamma transform when drawn to a
+     * screen.
+     */
+    UNKNOWN = 0x0,
+
+    /**
+     * Arbitrary dataspace with manually defined characteristics.  Definition
+     * for colorspaces or other meaning must be communicated separately.
+     *
+     * This is used when specifying primaries, transfer characteristics,
+     * etc. separately.
+     *
+     * A typical use case is in video encoding parameters (e.g. for H.264),
+     * where a colorspace can have separately defined primaries, transfer
+     * characteristics, etc.
+     */
+    ARBITRARY = 0x1,
+
+    /**
+     * Color-description aspects
+     *
+     * The following aspects define various characteristics of the color
+     * specification. These represent bitfields, so that a data space value
+     * can specify each of them independently.
+     */
+
+    STANDARD_SHIFT = 16,
+
+    /**
+     * Standard aspect
+     *
+     * Defines the chromaticity coordinates of the source primaries in terms of
+     * the CIE 1931 definition of x and y specified in ISO 11664-1.
+     */
+    STANDARD_MASK = 63 << 16, // 63 << STANDARD_SHIFT = 0x3F
+
+    /**
+     * Chromacity coordinates are unknown or are determined by the application.
+     * Implementations shall use the following suggested standards:
+     *
+     * All YCbCr formats: BT709 if size is 720p or larger (since most video
+     *                    content is letterboxed this corresponds to width is
+     *                    1280 or greater, or height is 720 or greater).
+     *                    BT601_625 if size is smaller than 720p or is JPEG.
+     * All RGB formats:   BT709.
+     *
+     * For all other formats standard is undefined, and implementations should use
+     * an appropriate standard for the data represented.
+     */
+    STANDARD_UNSPECIFIED = 0 << 16, // STANDARD_SHIFT
+
+    /**
+     * Primaries:       x       y
+     *  green           0.300   0.600
+     *  blue            0.150   0.060
+     *  red             0.640   0.330
+     *  white (D65)     0.3127  0.3290
+     *
+     * Use the unadjusted KR = 0.2126, KB = 0.0722 luminance interpretation
+     * for RGB conversion.
+     */
+    STANDARD_BT709 = 1 << 16,  // 1 << STANDARD_SHIFT
+
+    /**
+     * Primaries:       x       y
+     *  green           0.290   0.600
+     *  blue            0.150   0.060
+     *  red             0.640   0.330
+     *  white (D65)     0.3127  0.3290
+     *
+     *  KR = 0.299, KB = 0.114. This adjusts the luminance interpretation
+     *  for RGB conversion from the one purely determined by the primaries
+     *  to minimize the color shift into RGB space that uses BT.709
+     *  primaries.
+     */
+    STANDARD_BT601_625 = 2 << 16, // 2 << STANDARD_SHIFT,
+
+    /**
+     * Primaries:       x       y
+     *  green           0.290   0.600
+     *  blue            0.150   0.060
+     *  red             0.640   0.330
+     *  white (D65)     0.3127  0.3290
+     *
+     * Use the unadjusted KR = 0.222, KB = 0.071 luminance interpretation
+     * for RGB conversion.
+     */
+    STANDARD_BT601_625_UNADJUSTED = 3 << 16, // 3 << STANDARD_SHIFT
+
+    /**
+     * Primaries:       x       y
+     *  green           0.310   0.595
+     *  blue            0.155   0.070
+     *  red             0.630   0.340
+     *  white (D65)     0.3127  0.3290
+     *
+     *  KR = 0.299, KB = 0.114. This adjusts the luminance interpretation
+     *  for RGB conversion from the one purely determined by the primaries
+     *  to minimize the color shift into RGB space that uses BT.709
+     *  primaries.
+     */
+    STANDARD_BT601_525 = 4 << 16, // 4 << STANDARD_SHIFT
+
+    /**
+     * Primaries:       x       y
+     *  green           0.310   0.595
+     *  blue            0.155   0.070
+     *  red             0.630   0.340
+     *  white (D65)     0.3127  0.3290
+     *
+     * Use the unadjusted KR = 0.212, KB = 0.087 luminance interpretation
+     * for RGB conversion (as in SMPTE 240M).
+     */
+    STANDARD_BT601_525_UNADJUSTED = 5 << 16, // 5 << STANDARD_SHIFT
+
+    /**
+     * Primaries:       x       y
+     *  green           0.170   0.797
+     *  blue            0.131   0.046
+     *  red             0.708   0.292
+     *  white (D65)     0.3127  0.3290
+     *
+     * Use the unadjusted KR = 0.2627, KB = 0.0593 luminance interpretation
+     * for RGB conversion.
+     */
+    STANDARD_BT2020 = 6 << 16, // 6 << STANDARD_SHIFT
+
+    /**
+     * Primaries:       x       y
+     *  green           0.170   0.797
+     *  blue            0.131   0.046
+     *  red             0.708   0.292
+     *  white (D65)     0.3127  0.3290
+     *
+     * Use the unadjusted KR = 0.2627, KB = 0.0593 luminance interpretation
+     * for RGB conversion using the linear domain.
+     */
+    STANDARD_BT2020_CONSTANT_LUMINANCE = 7 << 16, // 7 << STANDARD_SHIFT
+
+    /**
+     * Primaries:       x      y
+     *  green           0.21   0.71
+     *  blue            0.14   0.08
+     *  red             0.67   0.33
+     *  white (C)       0.310  0.316
+     *
+     * Use the unadjusted KR = 0.30, KB = 0.11 luminance interpretation
+     * for RGB conversion.
+     */
+    STANDARD_BT470M = 8 << 16, // 8 << STANDARD_SHIFT
+
+    /**
+     * Primaries:       x       y
+     *  green           0.243   0.692
+     *  blue            0.145   0.049
+     *  red             0.681   0.319
+     *  white (C)       0.310   0.316
+     *
+     * Use the unadjusted KR = 0.254, KB = 0.068 luminance interpretation
+     * for RGB conversion.
+     */
+    STANDARD_FILM = 9 << 16, // 9 << STANDARD_SHIFT
+
+    /**
+     * SMPTE EG 432-1 and SMPTE RP 431-2. (DCI-P3)
+     * Primaries:       x       y
+     *  green           0.265   0.690
+     *  blue            0.150   0.060
+     *  red             0.680   0.320
+     *  white (D65)     0.3127  0.3290
+     */
+    STANDARD_DCI_P3 = 10 << 16, // 10 << STANDARD_SHIFT
+
+    /**
+     * Adobe RGB
+     * Primaries:       x       y
+     *  green           0.210   0.710
+     *  blue            0.150   0.060
+     *  red             0.640   0.330
+     *  white (D65)     0.3127  0.3290
+     */
+    STANDARD_ADOBE_RGB = 11 << 16, // 11 << STANDARD_SHIFT
+
+    TRANSFER_SHIFT = 22,
+
+    /**
+     * Transfer aspect
+     *
+     * Transfer characteristics are the opto-electronic transfer characteristic
+     * at the source as a function of linear optical intensity (luminance).
+     *
+     * For digital signals, E corresponds to the recorded value. Normally, the
+     * transfer function is applied in RGB space to each of the R, G and B
+     * components independently. This may result in color shift that can be
+     * minized by applying the transfer function in Lab space only for the L
+     * component. Implementation may apply the transfer function in RGB space
+     * for all pixel formats if desired.
+     */
+
+    TRANSFER_MASK = 31 << 22, // 31 << TRANSFER_SHIFT = 0x1F
+
+    /**
+     * Transfer characteristics are unknown or are determined by the
+     * application.
+     *
+     * Implementations should use the following transfer functions:
+     *
+     * For YCbCr formats: use TRANSFER_SMPTE_170M
+     * For RGB formats: use TRANSFER_SRGB
+     *
+     * For all other formats transfer function is undefined, and implementations
+     * should use an appropriate standard for the data represented.
+     */
+    TRANSFER_UNSPECIFIED = 0 << 22, // 0 << TRANSFER_SHIFT
+
+    /**
+     * Transfer characteristic curve:
+     *  E = L
+     *      L - luminance of image 0 <= L <= 1 for conventional colorimetry
+     *      E - corresponding electrical signal
+     */
+    TRANSFER_LINEAR = 1 << 22, // 1 << TRANSFER_SHIFT
+
+    /**
+     * Transfer characteristic curve:
+     *
+     * E = 1.055 * L^(1/2.4) - 0.055  for 0.0031308 <= L <= 1
+     *   = 12.92 * L                  for 0 <= L < 0.0031308
+     *     L - luminance of image 0 <= L <= 1 for conventional colorimetry
+     *     E - corresponding electrical signal
+     */
+    TRANSFER_SRGB = 2 << 22, // 2 << TRANSFER_SHIFT
+
+    /**
+     * BT.601 525, BT.601 625, BT.709, BT.2020
+     *
+     * Transfer characteristic curve:
+     *  E = 1.099 * L ^ 0.45 - 0.099  for 0.018 <= L <= 1
+     *    = 4.500 * L                 for 0 <= L < 0.018
+     *      L - luminance of image 0 <= L <= 1 for conventional colorimetry
+     *      E - corresponding electrical signal
+     */
+    TRANSFER_SMPTE_170M = 3 << 22, // 3 << TRANSFER_SHIFT
+
+    /**
+     * Assumed display gamma 2.2.
+     *
+     * Transfer characteristic curve:
+     *  E = L ^ (1/2.2)
+     *      L - luminance of image 0 <= L <= 1 for conventional colorimetry
+     *      E - corresponding electrical signal
+     */
+    TRANSFER_GAMMA2_2 = 4 << 22, // 4 << TRANSFER_SHIFT
+
+    /**
+     *  display gamma 2.6.
+     *
+     * Transfer characteristic curve:
+     *  E = L ^ (1/2.6)
+     *      L - luminance of image 0 <= L <= 1 for conventional colorimetry
+     *      E - corresponding electrical signal
+     */
+    TRANSFER_GAMMA2_6 = 5 << 22, // 5 << TRANSFER_SHIFT
+
+    /**
+     *  display gamma 2.8.
+     *
+     * Transfer characteristic curve:
+     *  E = L ^ (1/2.8)
+     *      L - luminance of image 0 <= L <= 1 for conventional colorimetry
+     *      E - corresponding electrical signal
+     */
+    TRANSFER_GAMMA2_8 = 6 << 22, // 6 << TRANSFER_SHIFT
+
+    /**
+     * SMPTE ST 2084 (Dolby Perceptual Quantizer)
+     *
+     * Transfer characteristic curve:
+     *  E = ((c1 + c2 * L^n) / (1 + c3 * L^n)) ^ m
+     *  c1 = c3 - c2 + 1 = 3424 / 4096 = 0.8359375
+     *  c2 = 32 * 2413 / 4096 = 18.8515625
+     *  c3 = 32 * 2392 / 4096 = 18.6875
+     *  m = 128 * 2523 / 4096 = 78.84375
+     *  n = 0.25 * 2610 / 4096 = 0.1593017578125
+     *      L - luminance of image 0 <= L <= 1 for HDR colorimetry.
+     *          L = 1 corresponds to 10000 cd/m2
+     *      E - corresponding electrical signal
+     */
+    TRANSFER_ST2084 = 7 << 22, // 7 << TRANSFER_SHIFT
+
+    /**
+     * ARIB STD-B67 Hybrid Log Gamma
+     *
+     * Transfer characteristic curve:
+     *  E = r * L^0.5                 for 0 <= L <= 1
+     *    = a * ln(L - b) + c         for 1 < L
+     *  a = 0.17883277
+     *  b = 0.28466892
+     *  c = 0.55991073
+     *  r = 0.5
+     *      L - luminance of image 0 <= L for HDR colorimetry. L = 1 corresponds
+     *          to reference white level of 100 cd/m2
+     *      E - corresponding electrical signal
+     */
+    TRANSFER_HLG = 8 << 22, // 8 << TRANSFER_SHIFT
+
+    RANGE_SHIFT = 27,
+
+    /**
+     * Range aspect
+     *
+     * Defines the range of values corresponding to the unit range of 0-1.
+     * This is defined for YCbCr only, but can be expanded to RGB space.
+     */
+    RANGE_MASK = 7 << 27, // 7 << RANGE_SHIFT = 0x7
+
+    /**
+     * Range is unknown or are determined by the application.  Implementations
+     * shall use the following suggested ranges:
+     *
+     * All YCbCr formats: limited range.
+     * All RGB or RGBA formats (including RAW and Bayer): full range.
+     * All Y formats: full range
+     *
+     * For all other formats range is undefined, and implementations should use
+     * an appropriate range for the data represented.
+     */
+    RANGE_UNSPECIFIED = 0 << 27, // 0 << RANGE_SHIFT = 0x0
+
+    /**
+     * Full range uses all values for Y, Cb and Cr from
+     * 0 to 2^b-1, where b is the bit depth of the color format.
+     */
+    RANGE_FULL = 1 << 27, // 1 << RANGE_SHIFT = 0x8000000
+
+    /**
+     * Limited range uses values 16/256*2^b to 235/256*2^b for Y, and
+     * 1/16*2^b to 15/16*2^b for Cb, Cr, R, G and B, where b is the bit depth of
+     * the color format.
+     *
+     * E.g. For 8-bit-depth formats:
+     * Luma (Y) samples should range from 16 to 235, inclusive
+     * Chroma (Cb, Cr) samples should range from 16 to 240, inclusive
+     *
+     * For 10-bit-depth formats:
+     * Luma (Y) samples should range from 64 to 940, inclusive
+     * Chroma (Cb, Cr) samples should range from 64 to 960, inclusive
+     */
+    RANGE_LIMITED = 2 << 27, // 2 << RANGE_SHIFT = 0x10000000
+
+    /**
+     * Extended range is used for scRGB. Intended for use with
+     * floating point pixel formats. [0.0 - 1.0] is the standard
+     * sRGB space. Values outside the range 0.0 - 1.0 can encode
+     * color outside the sRGB gamut.
+     * Used to blend / merge multiple dataspaces on a single display.
+     */
+    RANGE_EXTENDED = 3 << 27, // 3 << RANGE_SHIFT = 0x18000000
+
+    /**
+     * sRGB linear encoding:
+     *
+     * The red, green, and blue components are stored in sRGB space, but
+     * are linear, not gamma-encoded.
+     * The RGB primaries and the white point are the same as BT.709.
+     *
+     * The values are encoded using the full range ([0,255] for 8-bit) for all
+     * components.
+     */
+    SRGB_LINEAR = 1 << 16 | 1 << 22 | 1 << 27, // STANDARD_BT709 | TRANSFER_LINEAR | RANGE_FULL
+
+
+    /**
+     * scRGB linear encoding:
+     *
+     * The red, green, and blue components are stored in extended sRGB space,
+     * but are linear, not gamma-encoded.
+     * The RGB primaries and the white point are the same as BT.709.
+     *
+     * The values are floating point.
+     * A pixel value of 1.0, 1.0, 1.0 corresponds to sRGB white (D65) at 80 nits.
+     * Values beyond the range [0.0 - 1.0] would correspond to other colors
+     * spaces and/or HDR content.
+     */
+    SCRGB_LINEAR = 1 << 16 | 1 << 22 | 3 << 27, // STANDARD_BT709 | TRANSFER_LINEAR | RANGE_EXTENDED
+
+
+    /**
+     * sRGB gamma encoding:
+     *
+     * The red, green and blue components are stored in sRGB space, and
+     * converted to linear space when read, using the SRGB transfer function
+     * for each of the R, G and B components. When written, the inverse
+     * transformation is performed.
+     *
+     * The alpha component, if present, is always stored in linear space and
+     * is left unmodified when read or written.
+     *
+     * Use full range and BT.709 standard.
+     */
+    SRGB = 1 << 16 | 2 << 22 | 1 << 27, // STANDARD_BT709 | TRANSFER_SRGB | RANGE_FULL
+
+
+    /**
+     * scRGB:
+     *
+     * The red, green, and blue components are stored in extended sRGB space,
+     * but are linear, not gamma-encoded.
+     * The RGB primaries and the white point are the same as BT.709.
+     *
+     * The values are floating point.
+     * A pixel value of 1.0, 1.0, 1.0 corresponds to sRGB white (D65) at 80 nits.
+     * Values beyond the range [0.0 - 1.0] would correspond to other colors
+     * spaces and/or HDR content.
+     */
+    SCRGB = 1 << 16 | 2 << 22 | 3 << 27, // STANDARD_BT709 | TRANSFER_SRGB | RANGE_EXTENDED
+
+    /**
+     * YCbCr Colorspaces
+     * -----------------
+     *
+     * Primaries are given using (x,y) coordinates in the CIE 1931 definition
+     * of x and y specified by ISO 11664-1.
+     *
+     * Transfer characteristics are the opto-electronic transfer characteristic
+     * at the source as a function of linear optical intensity (luminance).
+     */
+
+    /**
+     * JPEG File Interchange Format (JFIF)
+     *
+     * Same model as BT.601-625, but all values (Y, Cb, Cr) range from 0 to 255
+     *
+     * Use full range, SMPTE 170M transfer and BT.601_625 standard.
+     */
+    JFIF = 2 << 16 | 3 << 22 | 1 << 27, // STANDARD_BT601_625 | TRANSFER_SMPTE_170M | RANGE_FULL
+
+    /**
+     * ITU-R Recommendation 601 (BT.601) - 625-line
+     *
+     * Standard-definition television, 625 Lines (PAL)
+     *
+     * Use limited range, SMPTE 170M transfer and BT.601_625 standard.
+     */
+    BT601_625 = 2 << 16 | 3 << 22 | 2 << 27, // STANDARD_BT601_625 | TRANSFER_SMPTE_170M | RANGE_LIMITED
+
+
+    /**
+     * ITU-R Recommendation 601 (BT.601) - 525-line
+     *
+     * Standard-definition television, 525 Lines (NTSC)
+     *
+     * Use limited range, SMPTE 170M transfer and BT.601_525 standard.
+     */
+    BT601_525 = 4 << 16 | 3 << 22 | 2 << 27, // STANDARD_BT601_525 | TRANSFER_SMPTE_170M | RANGE_LIMITED
+
+    /**
+     * ITU-R Recommendation 709 (BT.709)
+     *
+     * High-definition television
+     *
+     * Use limited range, SMPTE 170M transfer and BT.709 standard.
+     */
+    BT709 = 1 << 16 | 3 << 22 | 2 << 27, // STANDARD_BT709 | TRANSFER_SMPTE_170M | RANGE_LIMITED
+
+
+    /**
+     * SMPTE EG 432-1 and SMPTE RP 431-2.
+     *
+     * Digital Cinema DCI-P3
+     *
+     * Use full range, linear transfer and D65 DCI-P3 standard
+     */
+    DCI_P3_LINEAR = 10 << 16 | 1 << 22 | 1 << 27, // STANDARD_DCI_P3 | TRANSFER_LINEAR | RANGE_FULL
+
+
+    /**
+     * SMPTE EG 432-1 and SMPTE RP 431-2.
+     *
+     * Digital Cinema DCI-P3
+     *
+     * Use full range, gamma 2.6 transfer and D65 DCI-P3 standard
+     * Note: Application is responsible for gamma encoding the data as
+     * a 2.6 gamma encoding is not supported in HW.
+     */
+    DCI_P3 = 10 << 16 | 5 << 22 | 1 << 27, // STANDARD_DCI_P3 | TRANSFER_GAMMA2_6 | RANGE_FULL
+
+
+    /**
+     * Display P3
+     *
+     * Display P3 uses same primaries and white-point as DCI-P3
+     * linear transfer function makes this the same as DCI_P3_LINEAR.
+     */
+    DISPLAY_P3_LINEAR = 10 << 16 | 1 << 22 | 1 << 27, // STANDARD_DCI_P3 | TRANSFER_LINEAR | RANGE_FULL
+
+
+    /**
+     * Display P3
+     *
+     * Use same primaries and white-point as DCI-P3
+     * but sRGB transfer function.
+     */
+    DISPLAY_P3 = 10 << 16 | 2 << 22 | 1 << 27, // STANDARD_DCI_P3 | TRANSFER_SRGB | RANGE_FULL
+
+
+    /**
+     * Adobe RGB
+     *
+     * Use full range, gamma 2.2 transfer and Adobe RGB primaries
+     * Note: Application is responsible for gamma encoding the data as
+     * a 2.2 gamma encoding is not supported in HW.
+     */
+    ADOBE_RGB = 11 << 16 | 4 << 22 | 1 << 27, // STANDARD_ADOBE_RGB | TRANSFER_GAMMA2_2 | RANGE_FULL
+
+
+    /**
+     * ITU-R Recommendation 2020 (BT.2020)
+     *
+     * Ultra High-definition television
+     *
+     * Use full range, linear transfer and BT2020 standard
+     */
+    BT2020_LINEAR = 6 << 16 | 1 << 22 | 1 << 27, // STANDARD_BT2020 | TRANSFER_LINEAR | RANGE_FULL
+
+
+    /**
+     * ITU-R Recommendation 2020 (BT.2020)
+     *
+     * Ultra High-definition television
+     *
+     * Use full range, SMPTE 170M transfer and BT2020 standard
+     */
+    BT2020 = 6 << 16 | 3 << 22 | 1 << 27, // STANDARD_BT2020 | TRANSFER_SMPTE_170M | RANGE_FULL
+
+    /**
+     * ITU-R Recommendation 2020 (BT.2020)
+     *
+     * Ultra High-definition television
+     *
+     * Use full range, SMPTE 2084 (PQ) transfer and BT2020 standard
+     */
+    BT2020_PQ = 6 << 16 | 7 << 22 | 1 << 27, // STANDARD_BT2020 | TRANSFER_ST2084 | RANGE_FULL
+
+
+    /**
+     * Data spaces for non-color formats
+     */
+
+    /**
+     * The buffer contains depth ranging measurements from a depth camera.
+     * This value is valid with formats:
+     *    HAL_PIXEL_FORMAT_Y16: 16-bit samples, consisting of a depth measurement
+     *       and an associated confidence value. The 3 MSBs of the sample make
+     *       up the confidence value, and the low 13 LSBs of the sample make up
+     *       the depth measurement.
+     *       For the confidence section, 0 means 100% confidence, 1 means 0%
+     *       confidence. The mapping to a linear float confidence value between
+     *       0.f and 1.f can be obtained with
+     *         float confidence = (((depthSample >> 13) - 1) & 0x7) / 7.0f;
+     *       The depth measurement can be extracted simply with
+     *         uint16_t range = (depthSample & 0x1FFF);
+     *    HAL_PIXEL_FORMAT_BLOB: A depth point cloud, as
+     *       a variable-length float (x,y,z, confidence) coordinate point list.
+     *       The point cloud will be represented with the android_depth_points
+     *       structure.
+     */
+    DEPTH = 0x1000,
+
+    /**
+     * The buffer contains sensor events from sensor direct report.
+     * This value is valid with formats:
+     *    HAL_PIXEL_FORMAT_BLOB: an array of sensor event structure that forms
+     *       a lock free queue. Format of sensor event structure is specified
+     *       in Sensors HAL.
+     */
+    SENSOR = 0x1001,
+
+    /**
+     * ITU-R Recommendation 2020 (BT.2020)
+     *
+     * Ultra High-definition television
+     *
+     * Use limited range, SMPTE 170M transfer and BT2020 standard
+     */
+    BT2020_ITU = 6 << 16 | 3 << 22 | 2 << 27, // STANDARD_BT2020 | TRANSFER_SMPTE_170M | RANGE_LIMITED
+
+    /**
+     * ITU-R Recommendation 2100 (BT.2100)
+     *
+     * High dynamic range television
+     *
+     * Use limited/full range, PQ/HLG transfer, and BT2020 standard
+     * limited range is the preferred / normative definition for BT.2100
+     */
+    BT2020_ITU_PQ = 6 << 16 | 7 << 22 | 2 << 27, // STANDARD_BT2020 | TRANSFER_ST2084 | RANGE_LIMITED
+    BT2020_ITU_HLG = 6 << 16 | 8 << 22 | 2 << 27, // STANDARD_BT2020 | TRANSFER_HLG | RANGE_LIMITED
+    BT2020_HLG = 6 << 16 | 8 << 22 | 1 << 27, // STANDARD_BT2020 | TRANSFER_HLG | RANGE_FULL
+
+    /**
+     * ITU-R Recommendation 2020 (BT.2020)
+     *
+     * Ultra High-definition television
+     *
+     * Use full range, sRGB transfer and BT2020 standard
+     */
+    DISPLAY_BT2020 = 6 << 16 | 2 << 22 | 1 << 27, // STANDARD_BT2020 | TRANSFER_SRGB | RANGE_FULL
+
+    /**
+     * ISO 16684-1:2011(E)
+     *
+     * Embedded depth metadata following the dynamic depth specification.
+     */
+    DYNAMIC_DEPTH = 0x1002,
+
+    /**
+     * JPEG APP segments format as specified by JEIDA spec
+     *
+     * The buffer must only contain APP1 (Application Marker) segment followed
+     * by zero or more APPn segments, as is specified by JEITA CP-3451C section 4.5.4.
+     * The APP1 segment optionally contains a thumbnail. The buffer will not
+     * contain main compressed image.
+     *
+     * This value is valid with formats:
+     *    HAL_PIXEL_FORMAT_BLOB: JPEG APP segments optionally containing thumbnail image
+     * in APP1. BLOB buffer with this dataspace is output by HAL, and used by
+     * camera framework to encode into a HEIC image.
+     */
+    JPEG_APP_SEGMENTS = 0x1003,
+
+    /**
+     * ISO/IEC 23008-12
+     *
+     * High Efficiency Image File Format (HEIF)
+     *
+     * This value is valid with formats:
+     *    HAL_PIXEL_FORMAT_BLOB: A HEIC image encoded by HEIC or HEVC encoder
+     * according to ISO/IEC 23008-12.
+     */
+    HEIF = 0x1004,
+
+    /**
+     * ITU-R Recommendation 709 (BT.709)
+     *
+     * High-definition television
+     *
+     * Use full range, SMPTE 170M transfer and BT.709 standard.
+     */
+    BT709_FULL_RANGE = 1 << 16 | 3 << 22 | 1 << 27, // STANDARD_BT709 | TRANSFER_SMPTE_170M | RANGE_FULL
+}
diff --git a/graphics/common/aidl/android/hardware/graphics/common/ExtendableType.aidl b/graphics/common/aidl/android/hardware/graphics/common/ExtendableType.aidl
new file mode 100644
index 0000000..495693c
--- /dev/null
+++ b/graphics/common/aidl/android/hardware/graphics/common/ExtendableType.aidl
@@ -0,0 +1,52 @@
+/**
+ * Copyright (c) 2019, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.common;
+
+/**
+ * This struct is used for types that are commonly extended by vendors. For example, buffer
+ * compression is typically SoC specific. It is not possible for Android to define every possible
+ * proprietary vendor compression strategy. Instead, compression is represented using this
+ * ExtendableType that can support standard compression strategies while still allowing
+ * every vendor to easily add their own non-standard definitions.
+ */
+@VintfStability
+parcelable ExtendableType {
+    /**
+     * Name of the stable aidl interface whose value is stored in this structure.
+     *
+     * For standard types, the "name" field will be set to the stable aidl name of the type such as
+     * "android.hardware.graphics.common.Compression".
+     *
+     * For custom vendor types, the "name" field will be set to the name of the custom
+     * @VendorStability vendor AIDL interface such as
+     * "vendor.mycompanyname.graphics.common.Compression". The name of the vendor extension should
+     * contain the name of the owner of the extension. Including the company
+     * name in the "name" field prevents type collisions between different vendors.
+     */
+    @utf8InCpp String name;
+
+    /**
+     * Enum value of the from the stable aidl interface
+     *
+     * For standard types, the "value" field will be set to an enum value from that stable aidl
+     * type such as "NONE".
+     *
+     * For vendor types, the "value" field should be set to the enum value from the custom
+     * @VendorStability vendor AIDL interface extended type such as "MY_COMPRESSION_TYPE1".
+     */
+    long value = 0;
+}
diff --git a/graphics/common/aidl/android/hardware/graphics/common/HardwareBuffer.aidl b/graphics/common/aidl/android/hardware/graphics/common/HardwareBuffer.aidl
new file mode 100644
index 0000000..5a22c0f
--- /dev/null
+++ b/graphics/common/aidl/android/hardware/graphics/common/HardwareBuffer.aidl
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.common;
+
+import android.hardware.common.NativeHandle;
+import android.hardware.graphics.common.HardwareBufferDescription;
+
+/**
+ * Stable AIDL counterpart of AHardwareBuffer.
+ *
+ * @note This is different from the public HardwareBuffer.
+ * @sa +ndk libnativewindow#AHardwareBuffer
+ */
+@VintfStability
+parcelable HardwareBuffer {
+    HardwareBufferDescription description;
+    NativeHandle handle;
+}
diff --git a/graphics/common/aidl/android/hardware/graphics/common/HardwareBufferDescription.aidl b/graphics/common/aidl/android/hardware/graphics/common/HardwareBufferDescription.aidl
new file mode 100644
index 0000000..e1e3492
--- /dev/null
+++ b/graphics/common/aidl/android/hardware/graphics/common/HardwareBufferDescription.aidl
@@ -0,0 +1,35 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.common;
+
+import android.hardware.graphics.common.BufferUsage;
+import android.hardware.graphics.common.PixelFormat;
+
+/**
+ * Stable AIDL counterpart of AHardwareBuffer_Desc.
+ *
+ * @sa +ndk libnativewindow#AHardwareBuffer_Desc
+ */
+@VintfStability
+parcelable HardwareBufferDescription {
+    int width;
+    int height;
+    int layers;
+    PixelFormat format;
+    BufferUsage usage;
+    int stride;
+}
diff --git a/graphics/common/aidl/android/hardware/graphics/common/Interlaced.aidl b/graphics/common/aidl/android/hardware/graphics/common/Interlaced.aidl
new file mode 100644
index 0000000..a3f1baa
--- /dev/null
+++ b/graphics/common/aidl/android/hardware/graphics/common/Interlaced.aidl
@@ -0,0 +1,35 @@
+/**
+ * Copyright (c) 2019, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.common;
+
+/**
+ * Used by IAllocator/IMapper (gralloc) to describe standard interlaced strategies
+ */
+@VintfStability
+@Backing(type="long")
+enum Interlaced {
+    /* The buffer is not interlaced. */
+    NONE = 0,
+
+    /* The buffer's planes are interlaced horizontally. The height of each interlaced plane is
+     * 1/2 the height of the buffer's height. */
+    TOP_BOTTOM = 1,
+
+    /* The buffer's planes are interlaced vertically. The width of each interlaced plane is
+     * 1/2 the width of the buffer's width. */
+    RIGHT_LEFT = 2,
+}
diff --git a/graphics/common/aidl/android/hardware/graphics/common/PixelFormat.aidl b/graphics/common/aidl/android/hardware/graphics/common/PixelFormat.aidl
new file mode 100644
index 0000000..4942462
--- /dev/null
+++ b/graphics/common/aidl/android/hardware/graphics/common/PixelFormat.aidl
@@ -0,0 +1,516 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.common;
+
+/**
+ * Pixel formats for graphics buffers.
+ */
+@VintfStability
+@Backing(type="int")
+enum PixelFormat {
+    /**
+     * This value may be used in an operation where the format is optional.
+     */
+    UNSPECIFIED                        = 0,
+    /**
+     * 32-bit format that has 8-bit R, G, B, and A components, in that order,
+     * from the lowest memory address to the highest memory address.
+     *
+     * The component values are unsigned normalized to the range [0, 1], whose
+     * interpretation is defined by the dataspace.
+     */
+    RGBA_8888                          = 0x1,
+
+    /**
+     * 32-bit format that has 8-bit R, G, B, and unused components, in that
+     * order, from the lowest memory address to the highest memory address.
+     *
+     * The component values are unsigned normalized to the range [0, 1], whose
+     * interpretation is defined by the dataspace.
+     */
+    RGBX_8888                          = 0x2,
+
+    /**
+     * 24-bit format that has 8-bit R, G, and B components, in that order,
+     * from the lowest memory address to the highest memory address.
+     *
+     * The component values are unsigned normalized to the range [0, 1], whose
+     * interpretation is defined by the dataspace.
+     */
+    RGB_888                            = 0x3,
+
+    /**
+     * 16-bit packed format that has 5-bit R, 6-bit G, and 5-bit B components,
+     * in that order, from the most-sigfinicant bits to the least-significant
+     * bits.
+     *
+     * The component values are unsigned normalized to the range [0, 1], whose
+     * interpretation is defined by the dataspace.
+     */
+    RGB_565                            = 0x4,
+
+    /**
+     * 32-bit format that has 8-bit B, G, R, and A components, in that order,
+     * from the lowest memory address to the highest memory address.
+     *
+     * The component values are unsigned normalized to the range [0, 1], whose
+     * interpretation is defined by the dataspace.
+     */
+    BGRA_8888                          = 0x5,
+
+    /**
+     * Legacy formats deprecated in favor of YCBCR_420_888.
+     */
+    YCBCR_422_SP                       = 0x10,  // NV16
+    YCRCB_420_SP                       = 0x11,  // NV21
+    YCBCR_422_I                        = 0x14,  // YUY2
+
+    /**
+     * 64-bit format that has 16-bit R, G, B, and A components, in that order,
+     * from the lowest memory address to the highest memory address.
+     *
+     * The component values are signed floats, whose interpretation is defined
+     * by the dataspace.
+     */
+    RGBA_FP16                          = 0x16,
+
+    /**
+     * RAW16 is a single-channel, 16-bit, little endian format, typically
+     * representing raw Bayer-pattern images from an image sensor, with minimal
+     * processing.
+     *
+     * The exact pixel layout of the data in the buffer is sensor-dependent, and
+     * needs to be queried from the camera device.
+     *
+     * Generally, not all 16 bits are used; more common values are 10 or 12
+     * bits. If not all bits are used, the lower-order bits are filled first.
+     * All parameters to interpret the raw data (black and white points,
+     * color space, etc) must be queried from the camera device.
+     *
+     * This format assumes
+     * - an even width
+     * - an even height
+     * - a horizontal stride multiple of 16 pixels
+     * - a vertical stride equal to the height
+     * - strides are specified in pixels, not in bytes
+     *
+     *   size = stride * height * 2
+     *
+     * This format must be accepted by the allocator when used with the
+     * following usage flags:
+     *
+     *    - BufferUsage::CAMERA_*
+     *    - BufferUsage::CPU_*
+     *    - BufferUsage::RENDERSCRIPT
+     *
+     * The mapping of the dataspace to buffer contents for RAW16 is as
+     * follows:
+     *
+     *  Dataspace value               | Buffer contents
+     * -------------------------------+-----------------------------------------
+     *  Dataspace::ARBITRARY          | Raw image sensor data, layout is as
+     *                                | defined above.
+     *  Dataspace::DEPTH              | Unprocessed implementation-dependent raw
+     *                                | depth measurements, opaque with 16 bit
+     *                                | samples.
+     *  Other                         | Unsupported
+     */
+    RAW16                              = 0x20,
+
+    /**
+     * BLOB is used to carry task-specific data which does not have a standard
+     * image structure. The details of the format are left to the two
+     * endpoints.
+     *
+     * A typical use case is for transporting JPEG-compressed images from the
+     * Camera HAL to the framework or to applications.
+     *
+     * Buffers of this format must have a height of 1, and width equal to their
+     * size in bytes.
+     *
+     * The mapping of the dataspace to buffer contents for BLOB is as
+     * follows:
+     *
+     *  Dataspace value               | Buffer contents
+     * -------------------------------+-----------------------------------------
+     *  Dataspace::JFIF               | An encoded JPEG image
+     *  Dataspace::DEPTH              | An android_depth_points buffer
+     *  Dataspace::SENSOR             | Sensor event data.
+     *  Other                         | Unsupported
+     */
+    BLOB                               = 0x21,
+
+    /**
+     * A format indicating that the choice of format is entirely up to the
+     * allocator.
+     *
+     * The allocator should examine the usage bits passed in when allocating a
+     * buffer with this format, and it should derive the pixel format from
+     * those usage flags. This format must never be used with any of the
+     * BufferUsage::CPU_* usage flags.
+     *
+     * Even when the internally chosen format has an alpha component, the
+     * clients must assume the alpha vlaue to be 1.0.
+     *
+     * The interpretation of the component values is defined by the dataspace.
+     */
+    IMPLEMENTATION_DEFINED             = 0x22,
+
+    /**
+     * This format allows platforms to use an efficient YCbCr/YCrCb 4:2:0
+     * buffer layout, while still describing the general format in a
+     * layout-independent manner. While called YCbCr, it can be used to
+     * describe formats with either chromatic ordering, as well as
+     * whole planar or semiplanar layouts.
+     *
+     * This format must be accepted by the allocator when BufferUsage::CPU_*
+     * are set.
+     *
+     * Buffers with this format must be locked with IMapper::lockYCbCr.
+     * Locking with IMapper::lock must return an error.
+     *
+     * The interpretation of the component values is defined by the dataspace.
+     */
+    YCBCR_420_888                      = 0x23,
+
+    /**
+     * RAW_OPAQUE is a format for unprocessed raw image buffers coming from an
+     * image sensor. The actual structure of buffers of this format is
+     * implementation-dependent.
+     *
+     * This format must be accepted by the allocator when used with the
+     * following usage flags:
+     *
+     *    - BufferUsage::CAMERA_*
+     *    - BufferUsage::CPU_*
+     *    - BufferUsage::RENDERSCRIPT
+     *
+     * The mapping of the dataspace to buffer contents for RAW_OPAQUE is as
+     * follows:
+     *
+     *  Dataspace value               | Buffer contents
+     * -------------------------------+-----------------------------------------
+     *  Dataspace::ARBITRARY          | Raw image sensor data.
+     *  Other                         | Unsupported
+     */
+    RAW_OPAQUE                         = 0x24,
+
+    /**
+     * RAW10 is a single-channel, 10-bit per pixel, densely packed in each row,
+     * unprocessed format, usually representing raw Bayer-pattern images coming from
+     * an image sensor.
+     *
+     * In an image buffer with this format, starting from the first pixel of each
+     * row, each 4 consecutive pixels are packed into 5 bytes (40 bits). Each one
+     * of the first 4 bytes contains the top 8 bits of each pixel, The fifth byte
+     * contains the 2 least significant bits of the 4 pixels, the exact layout data
+     * for each 4 consecutive pixels is illustrated below (Pi[j] stands for the jth
+     * bit of the ith pixel):
+     *
+     *          bit 7                                     bit 0
+     *          =====|=====|=====|=====|=====|=====|=====|=====|
+     * Byte 0: |P0[9]|P0[8]|P0[7]|P0[6]|P0[5]|P0[4]|P0[3]|P0[2]|
+     *         |-----|-----|-----|-----|-----|-----|-----|-----|
+     * Byte 1: |P1[9]|P1[8]|P1[7]|P1[6]|P1[5]|P1[4]|P1[3]|P1[2]|
+     *         |-----|-----|-----|-----|-----|-----|-----|-----|
+     * Byte 2: |P2[9]|P2[8]|P2[7]|P2[6]|P2[5]|P2[4]|P2[3]|P2[2]|
+     *         |-----|-----|-----|-----|-----|-----|-----|-----|
+     * Byte 3: |P3[9]|P3[8]|P3[7]|P3[6]|P3[5]|P3[4]|P3[3]|P3[2]|
+     *         |-----|-----|-----|-----|-----|-----|-----|-----|
+     * Byte 4: |P3[1]|P3[0]|P2[1]|P2[0]|P1[1]|P1[0]|P0[1]|P0[0]|
+     *          ===============================================
+     *
+     * This format assumes
+     * - a width multiple of 4 pixels
+     * - an even height
+     * - a vertical stride equal to the height
+     * - strides are specified in bytes, not in pixels
+     *
+     *   size = stride * height
+     *
+     * When stride is equal to width * (10 / 8), there will be no padding bytes at
+     * the end of each row, the entire image data is densely packed. When stride is
+     * larger than width * (10 / 8), padding bytes will be present at the end of each
+     * row (including the last row).
+     *
+     * This format must be accepted by the allocator when used with the
+     * following usage flags:
+     *
+     *    - BufferUsage::CAMERA_*
+     *    - BufferUsage::CPU_*
+     *    - BufferUsage::RENDERSCRIPT
+     *
+     * The mapping of the dataspace to buffer contents for RAW10 is as
+     * follows:
+     *
+     *  Dataspace value               | Buffer contents
+     * -------------------------------+-----------------------------------------
+     *  Dataspace::ARBITRARY          | Raw image sensor data.
+     *  Other                         | Unsupported
+     */
+    RAW10                              = 0x25,
+
+    /**
+     * RAW12 is a single-channel, 12-bit per pixel, densely packed in each row,
+     * unprocessed format, usually representing raw Bayer-pattern images coming from
+     * an image sensor.
+     *
+     * In an image buffer with this format, starting from the first pixel of each
+     * row, each two consecutive pixels are packed into 3 bytes (24 bits). The first
+     * and second byte contains the top 8 bits of first and second pixel. The third
+     * byte contains the 4 least significant bits of the two pixels, the exact layout
+     * data for each two consecutive pixels is illustrated below (Pi[j] stands for
+     * the jth bit of the ith pixel):
+     *
+     *           bit 7                                            bit 0
+     *          ======|======|======|======|======|======|======|======|
+     * Byte 0: |P0[11]|P0[10]|P0[ 9]|P0[ 8]|P0[ 7]|P0[ 6]|P0[ 5]|P0[ 4]|
+     *         |------|------|------|------|------|------|------|------|
+     * Byte 1: |P1[11]|P1[10]|P1[ 9]|P1[ 8]|P1[ 7]|P1[ 6]|P1[ 5]|P1[ 4]|
+     *         |------|------|------|------|------|------|------|------|
+     * Byte 2: |P1[ 3]|P1[ 2]|P1[ 1]|P1[ 0]|P0[ 3]|P0[ 2]|P0[ 1]|P0[ 0]|
+     *          =======================================================
+     *
+     * This format assumes:
+     * - a width multiple of 4 pixels
+     * - an even height
+     * - a vertical stride equal to the height
+     * - strides are specified in bytes, not in pixels
+     *
+     *   size = stride * height
+     *
+     * When stride is equal to width * (12 / 8), there will be no padding bytes at
+     * the end of each row, the entire image data is densely packed. When stride is
+     * larger than width * (12 / 8), padding bytes will be present at the end of
+     * each row (including the last row).
+     *
+     * This format must be accepted by the allocator when used with the
+     * following usage flags:
+     *
+     *    - BufferUsage::CAMERA_*
+     *    - BufferUsage::CPU_*
+     *    - BufferUsage::RENDERSCRIPT
+     *
+     * The mapping of the dataspace to buffer contents for RAW12 is as
+     * follows:
+     *
+     *  Dataspace value               | Buffer contents
+     * -------------------------------+-----------------------------------------
+     *  Dataspace::ARBITRARY          | Raw image sensor data.
+     *  Other                         | Unsupported
+     */
+    RAW12                              = 0x26,
+
+    /** 0x27 to 0x2A are reserved for flexible formats */
+
+    /**
+     * 32-bit packed format that has 2-bit A, 10-bit B, G, and R components,
+     * in that order, from the most-sigfinicant bits to the least-significant
+     * bits.
+     *
+     * The component values are unsigned normalized to the range [0, 1], whose
+     * interpretation is defined by the dataspace.
+     */
+    RGBA_1010102                       = 0x2B,
+
+    /**
+     * 0x100 - 0x1FF
+     *
+     * This range is reserved for vendor extensions. Formats in this range
+     * must support BufferUsage::GPU_TEXTURE. Clients must assume they do not
+     * have an alpha component.
+     */
+
+    /**
+     * Y8 is a YUV planar format comprised of a WxH Y plane, with each pixel
+     * being represented by 8 bits. It is equivalent to just the Y plane from
+     * YV12.
+     *
+     * This format assumes
+     * - an even width
+     * - an even height
+     * - a horizontal stride multiple of 16 pixels
+     * - a vertical stride equal to the height
+     *
+     *   size = stride * height
+     *
+     * This format must be accepted by the allocator when used with the
+     * following usage flags:
+     *
+     *    - BufferUsage::CAMERA_*
+     *    - BufferUsage::CPU_*
+     *
+     * The component values are unsigned normalized to the range [0, 1], whose
+     * interpretation is defined by the dataspace.
+     */
+    Y8                                 = 0x20203859,
+
+    /**
+     * Y16 is a YUV planar format comprised of a WxH Y plane, with each pixel
+     * being represented by 16 bits. It is just like Y8, but has double the
+     * bits per pixel (little endian).
+     *
+     * This format assumes
+     * - an even width
+     * - an even height
+     * - a horizontal stride multiple of 16 pixels
+     * - a vertical stride equal to the height
+     * - strides are specified in pixels, not in bytes
+     *
+     *   size = stride * height * 2
+     *
+     * This format must be accepted by the allocator when used with the
+     * following usage flags:
+     *
+     *    - BufferUsage::CAMERA_*
+     *    - BufferUsage::CPU_*
+     *
+     * The component values are unsigned normalized to the range [0, 1], whose
+     * interpretation is defined by the dataspace. When the dataspace is
+     * Dataspace::DEPTH, each pixel is a distance value measured by a depth
+     * camera, plus an associated confidence value.
+     */
+    Y16                                = 0x20363159,
+
+    /**
+     * YV12 is a 4:2:0 YCrCb planar format comprised of a WxH Y plane followed
+     * by (W/2) x (H/2) Cr and Cb planes.
+     *
+     * This format assumes
+     * - an even width
+     * - an even height
+     * - a horizontal stride multiple of 16 pixels
+     * - a vertical stride equal to the height
+     *
+     *   y_size = stride * height
+     *   c_stride = ALIGN(stride/2, 16)
+     *   c_size = c_stride * height/2
+     *   size = y_size + c_size * 2
+     *   cr_offset = y_size
+     *   cb_offset = y_size + c_size
+     *
+     * This range is reserved for vendor extensions. Formats in this range
+     * must support BufferUsage::GPU_TEXTURE. Clients must assume they do not
+     * have an alpha component.
+     *
+     * This format must be accepted by the allocator when used with the
+     * following usage flags:
+     *
+     *    - BufferUsage::CAMERA_*
+     *    - BufferUsage::CPU_*
+     *    - BufferUsage::GPU_TEXTURE
+     *
+     * The component values are unsigned normalized to the range [0, 1], whose
+     * interpretation is defined by the dataspace.
+     */
+    YV12                               = 0x32315659, // YCrCb 4:2:0 Planar
+
+    /**
+     * 16-bit format that has a single 16-bit depth component.
+     *
+     * The component values are unsigned normalized to the range [0, 1], whose
+     * interpretation is defined by the dataspace.
+     */
+    DEPTH_16                           = 0x30,
+
+    /**
+     * 32-bit format that has a single 24-bit depth component and, optionally,
+     * 8 bits that are unused.
+     *
+     * The component values are unsigned normalized to the range [0, 1], whose
+     * interpretation is defined by the dataspace.
+     */
+    DEPTH_24                           = 0x31,
+
+    /**
+     * 32-bit format that has a 24-bit depth component and an 8-bit stencil
+     * component packed into 32-bits.
+     *
+     * The depth component values are unsigned normalized to the range [0, 1],
+     * whose interpretation is defined by the dataspace. The stencil values are
+     * unsigned integers, whose interpretation is defined by the dataspace.
+     */
+    DEPTH_24_STENCIL_8                 = 0x32,
+
+    /**
+     * 32-bit format that has a single 32-bit depth component.
+     *
+     * The component values are signed floats, whose interpretation is defined
+     * by the dataspace.
+     */
+    DEPTH_32F                          = 0x33,
+
+    /**
+     * Two-component format that has a 32-bit depth component, an 8-bit stencil
+     * component, and optionally 24-bits unused.
+     *
+     * The depth component values are signed floats, whose interpretation is
+     * defined by the dataspace. The stencil bits are unsigned integers, whose
+     * interpretation is defined by the dataspace.
+     */
+    DEPTH_32F_STENCIL_8                = 0x34,
+
+    /**
+     * 8-bit format that has a single 8-bit stencil component.
+     *
+     * The component values are unsigned integers, whose interpretation is
+     * defined by the dataspace.
+     */
+    STENCIL_8                          = 0x35,
+
+    /**
+     * P010 is a 4:2:0 YCbCr semiplanar format comprised of a WxH Y plane
+     * followed immediately by a Wx(H/2) CbCr plane. Each sample is
+     * represented by a 16-bit little-endian value, with the lower 6 bits set
+     * to zero.
+     *
+     * This format assumes
+     * - an even height
+     * - a vertical stride equal to the height
+     *
+     *   stride_in_bytes = stride * 2
+     *   y_size = stride_in_bytes * height
+     *   cbcr_size = stride_in_bytes * (height / 2)
+     *   cb_offset = y_size
+     *   cr_offset = cb_offset + 2
+     *
+     * This format must be accepted by the allocator when used with the
+     * following usage flags:
+     *
+     *    - BufferUsage::VIDEO_*
+     *    - BufferUsage::CPU_*
+     *    - BufferUsage::GPU_TEXTURE
+     *
+     * The component values are unsigned normalized to the range [0, 1], whose
+     * interpretation is defined by the dataspace.
+     *
+     * This format is appropriate for 10bit video content.
+     *
+     * Buffers with this format must be locked with IMapper::lockYCbCr
+     * or with IMapper::lock.
+     */
+    YCBCR_P010                         = 0x36,
+
+    /**
+     * 24-bit format that has 8-bit H, S, and V components, in that order,
+     * from the lowest memory address to the highest memory address.
+     *
+     * The component values are unsigned normalized to the range [0, 1], whose
+     * interpretation is defined by the dataspace.
+    */
+    HSV_888                            = 0x37,
+}
diff --git a/graphics/common/aidl/android/hardware/graphics/common/PlaneLayout.aidl b/graphics/common/aidl/android/hardware/graphics/common/PlaneLayout.aidl
new file mode 100644
index 0000000..168028d
--- /dev/null
+++ b/graphics/common/aidl/android/hardware/graphics/common/PlaneLayout.aidl
@@ -0,0 +1,125 @@
+/**
+ * Copyright (c) 2019, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.common;
+
+import android.hardware.graphics.common.PlaneLayoutComponent;
+import android.hardware.graphics.common.Rect;
+
+/**
+ * Used by IAllocator/IMapper (gralloc) to describe the plane layout of a buffer.
+ *
+ * PlaneLayout uses the following definitions:
+ *
+ * - Component - a component is one channel of a pixel. For example, an RGBA format has
+ *      four components: R, G, B and A.
+ * - Sample - a sample is comprised of all the components in a given plane. For example,
+ *      a buffer with one Y plane and one CbCr plane has one plane with a sample of Y
+ *      and one plane with a sample of CbCr.
+ * - Pixel - a pixel is comprised of all the (non-metadata/raw) components in buffer across
+ *      all planes. For example, a buffer with a plane of Y and a plane of CbCr has a pixel
+ *      of YCbCr.
+ */
+
+@VintfStability
+parcelable PlaneLayout {
+    /**
+     * An list of plane layout components. This list of components should include
+     * every component in this plane. For example, a CbCr plane should return a
+     * vector of size two with one PlaneLayoutComponent for Cb and one for Cr.
+     */
+    PlaneLayoutComponent[] components;
+
+    /**
+     * Offset to the first byte of the plane (in bytes), from the start of the allocation.
+     */
+    long offsetInBytes;
+
+    /**
+     * Bits per sample increment (aka column increment): describes the distance
+     * in bits from one sample to the next sample (to the right) on the same row for the
+     * the component plane.
+     *
+     * The default value is 0. Return the default value if the increment is undefined, unknown,
+     * or variable.
+     *
+     * This can be negative. A negative increment indicates that the samples are read from
+     * right to left.
+     */
+    long sampleIncrementInBits;
+
+    /**
+     * Horizontal stride: number of bytes between two vertically adjacent
+     * samples in given plane. This can be mathematically described by:
+     *
+     * strideInBytes = ALIGN(widthInSamples * bps / 8, alignment)
+     *
+     * where,
+     *
+     * bps: average bits per sample
+     * alignment (in bytes): dependent upon pixel format and usage
+     *
+     * strideInBytes can contain additional padding beyond the widthInSamples.
+     *
+     * The default value is 0. Return the default value if the stride is undefined, unknown,
+     * or variable.
+     *
+     * This can be negative. A negative stride indicates that the rows are read from
+     * bottom to top.
+     */
+    long strideInBytes;
+
+    /**
+     * Dimensions of plane (in samples).
+     *
+     * This is the number of samples in the plane, even if subsampled.
+     *
+     * See 'strideInBytes' for relationship between strideInBytes and widthInSamples.
+     */
+    long widthInSamples;
+    long heightInSamples;
+
+    /**
+     * Can be used to get the total size in bytes of any memory used by the plane
+     * including extra padding. This should not include any extra metadata used to describe the
+     * plane.
+     */
+    long totalSizeInBytes;
+
+    /**
+     * Horizontal and vertical subsampling. Must be a positive power of 2.
+     *
+     * These fields indicate the number of horizontally or vertically adjacent pixels that use
+     * the same pixel data. A value of 1 indicates no subsampling.
+     */
+    long horizontalSubsampling;
+    long verticalSubsampling;
+
+    /**
+     * Some buffer producers require extra padding to their output buffer; therefore the
+     * physical size of the native buffer will be larger than its logical size.
+     * The crop rectangle determines the offset and logical size of the buffer that should be
+     * read by consumers.
+     *
+     * The crop rectangle is measured in samples and is relative to the offset of the
+     * plane. Valid crop rectangles are within the boundaries of the plane:
+     * [0, 0, widthInSamples, heightInSamples].
+     *
+     * The default crop rectangle is a rectangle the same size as the plane:
+     * [0, 0, widthInSamples, heightInSamples].
+     */
+    Rect crop;
+}
diff --git a/graphics/common/aidl/android/hardware/graphics/common/PlaneLayoutComponent.aidl b/graphics/common/aidl/android/hardware/graphics/common/PlaneLayoutComponent.aidl
new file mode 100644
index 0000000..3fca53b
--- /dev/null
+++ b/graphics/common/aidl/android/hardware/graphics/common/PlaneLayoutComponent.aidl
@@ -0,0 +1,67 @@
+/**
+ * Copyright (c) 2019, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.common;
+
+import android.hardware.graphics.common.ExtendableType;
+
+/**
+ * Used by IAllocator/IMapper (gralloc) to describe the type and location of a component in a
+ * buffer's plane.
+ *
+ * PlaneLayoutComponent uses the following definitions:
+ *
+ * - Component - a component is one channel of a pixel. For example, an RGBA format has
+ *      four components: R, G, B and A.
+ * - Sample - a sample is comprised of all the components in a given plane. For example,
+ *      a buffer with one Y plane and one CbCr plane has one plane with a sample of Y
+ *      and one plane with a sample of CbCr.
+ * - Pixel - a pixel is comprised of all the (non-metadata/raw) components in buffer across
+ *      all planes. For example, a buffer with a plane of Y and a plane of CbCr has a pixel
+ *      of YCbCr.
+ */
+
+@VintfStability
+parcelable PlaneLayoutComponent {
+    /**
+     * The type of this plane layout component.
+     *
+     * android.hardware.graphics.common.PlaneLayoutComponent defines the standard
+     * plane layout component types. Vendors may extend this type to include any
+     * non-standard plane layout component types. For instructions on how to
+     * create a vendor extension, refer to ExtendableType.aidl.
+     */
+    ExtendableType type;
+
+    /**
+     * Offset in bits to the first instance of this component in the plane.
+     * This is relative to the plane's offset (PlaneLayout::offset).
+     *
+     * If the offset cannot be described using a int64_t, this should be set to -1.
+     * For example, if the plane is compressed and the offset is not defined or
+     * relevant, return -1.
+     */
+    long offsetInBits;
+
+    /**
+     * The number of bits used per component in the plane.
+     *
+     * If the plane layout component cannot be described using componentSizeInBits, this
+     * should be set to -1. For example, if the component varies in size throughout
+     * the plane, return -1.
+     */
+    long sizeInBits;
+}
diff --git a/graphics/common/aidl/android/hardware/graphics/common/PlaneLayoutComponentType.aidl b/graphics/common/aidl/android/hardware/graphics/common/PlaneLayoutComponentType.aidl
new file mode 100644
index 0000000..18c4a2e
--- /dev/null
+++ b/graphics/common/aidl/android/hardware/graphics/common/PlaneLayoutComponentType.aidl
@@ -0,0 +1,46 @@
+/**
+ * Copyright (c) 2019, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.common;
+
+/**
+ * Used by IAllocator/IMapper (gralloc) to describe standard plane layout component types
+ *
+ * The enum values have been taken directly from gralloc1's android_flex_component for compatiblity
+ * reasons. However, unlike gralloc1's android_flex_component, this field is NOT a bit field.
+ * A plane's components should NOT be expressed by bitwise OR-ing different
+ * PlaneLayoutComponentTypes together.
+ */
+@VintfStability
+@Backing(type="long")
+enum PlaneLayoutComponentType {
+    /* Luma */
+    Y = 1 << 0,
+    /* Chroma blue */
+    CB = 1 << 1,
+    /* Chroma red */
+    CR = 1 << 2,
+
+    /* Red */
+    R = 1 << 10,
+    /* Green */
+    G = 1 << 11,
+    /* Blue */
+    B = 1 << 12,
+
+    /* Alpha */
+    A = 1 << 30,
+}
diff --git a/graphics/common/aidl/android/hardware/graphics/common/Rect.aidl b/graphics/common/aidl/android/hardware/graphics/common/Rect.aidl
new file mode 100644
index 0000000..1a3bc11
--- /dev/null
+++ b/graphics/common/aidl/android/hardware/graphics/common/Rect.aidl
@@ -0,0 +1,29 @@
+/**
+ * Copyright (c) 2019, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.common;
+
+/**
+ * General purpose definition of a rectangle.
+ */
+
+@VintfStability
+parcelable Rect {
+    int left;
+    int top;
+    int right;
+    int bottom;
+}
diff --git a/graphics/common/aidl/android/hardware/graphics/common/Smpte2086.aidl b/graphics/common/aidl/android/hardware/graphics/common/Smpte2086.aidl
new file mode 100644
index 0000000..60614cd
--- /dev/null
+++ b/graphics/common/aidl/android/hardware/graphics/common/Smpte2086.aidl
@@ -0,0 +1,51 @@
+/**
+ * Copyright (c) 2019, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.common;
+import android.hardware.graphics.common.XyColor;
+
+/**
+ * Mastering display metadata as specified by SMPTE ST 2086.
+ *
+ * This is an AIDL counterpart of the NDK struct `AHdrMetadata_smpte2086`.
+ */
+@VintfStability
+parcelable Smpte2086 {
+    /**
+     * CIE XYZ chromaticity for red in the RGB primaries.
+     */
+    XyColor primaryRed;
+    /**
+     * CIE XYZ chromaticity for green in the RGB primaries.
+     */
+    XyColor primaryGreen;
+    /**
+     * CIE XYZ chromaticity for blue in the RGB primaries.
+     */
+    XyColor primaryBlue;
+    /**
+     * CIE XYZ chromaticity for the white point.
+     */
+    XyColor whitePoint;
+    /**
+     * Maximum luminance in candelas per square meter.
+     */
+    float maxLuminance;
+    /**
+     * Minimum luminance in candelas per square meter.
+     */
+    float minLuminance;
+}
diff --git a/graphics/common/aidl/android/hardware/graphics/common/StandardMetadataType.aidl b/graphics/common/aidl/android/hardware/graphics/common/StandardMetadataType.aidl
new file mode 100644
index 0000000..7b46688
--- /dev/null
+++ b/graphics/common/aidl/android/hardware/graphics/common/StandardMetadataType.aidl
@@ -0,0 +1,330 @@
+/**
+ * Copyright (c) 2019,libgralloctypes_helper The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.common;
+
+/**
+ * Used by IAllocator/IMapper (gralloc) to describe standard metadata types.
+ *
+ * This is an enum that defines the common types of gralloc 4 buffer metadata. The comments for
+ * each enum include a description of the metadata that is associated with the type.
+ *
+ * IMapper@4.x must support getting the following standard buffer metadata types. IMapper@4.x may
+ * support setting these standard buffer metadata types as well.
+ *
+ * When encoding these StandardMetadataTypes into a byte stream, the associated MetadataType is
+ * is first encoded followed by the StandardMetadataType value. The MetadataType is encoded by
+ * writing the length of MetadataType.name using 8 bytes in little endian, followed by a char
+ * array of MetadataType.name's characters. The char array is not null terminated. Finally,
+ * MetadataType.value is represented by 8 bytes written in little endian.
+ *
+ * The StandardMetadataType encode/decode support library can be found in:
+ * frameworks/native/libs/gralloc/types/include/gralloctypes/Gralloc4.h.
+ */
+@VintfStability
+@Backing(type="long")
+enum StandardMetadataType {
+    INVALID = 0,
+
+    /**
+     * Can be used to get the random ID of the buffer. This ID should be psuedorandom with
+     * sufficient entropy.
+     *
+     * This ID should only be used for debugging purposes. It cannot be used as a basis for any
+     * control flows.
+     *
+     * The buffer ID is determined at allocation time and should not change during the lifetime
+     * of the buffer.
+     *
+     * The buffer ID is a uint64_t.
+     *
+     * When it is encoded into a byte stream, it is represented by 8 bytes written in little endian.
+     */
+    BUFFER_ID = 1,
+
+    /**
+     * Can be used to get the name passed in by the client at allocation time in the
+     * BufferDescriptorInfo.
+     *
+     * The buffer name is determined at allocation time and should not change during the lifetime
+     * of the buffer.
+     *
+     * The buffer name is a string.
+     *
+     * When it is encoded into a byte stream, the length of the string is written using 8 bytes in
+     * little endian. It is followed by a char array of the string's
+     * characters. The array is not null-terminated.
+     */
+    NAME = 2,
+
+    /**
+     * Can be used to get the number of elements per buffer row requested at allocation time in
+     * the BufferDescriptorInfo.
+     *
+     * The width is determined at allocation time and should not change during the lifetime
+     * of the buffer.
+     *
+     * The width is a uint64_t.
+     *
+     * When it is encoded into a byte stream, it is represented by 8 bytes written in little endian.
+     */
+    WIDTH = 3,
+
+    /**
+     * Can be used to get the number of elements per buffer column requested at allocation time in
+     * the BufferDescriptorInfo.
+     *
+     * The height is determined at allocation time and should not change during the lifetime
+     * of the buffer.
+     *
+     * The height is a uint64_t.
+     *
+     * When it is encoded into a byte stream, it is represented by 8 bytes written in little endian.
+     */
+    HEIGHT = 4,
+
+    /**
+     * Can be used to get the number of layers requested at allocation time in the
+     * BufferDescriptorInfo.
+     *
+     * The layer count is determined at allocation time and should not change during the lifetime
+     * of the buffer.
+     *
+     * The layer count is a uint64_t.
+     *
+     * When it is encoded into a byte stream, it is represented by 8 bytes written in little endian.
+     */
+    LAYER_COUNT = 5,
+
+    /**
+     * Can be used to get the buffer format requested at allocation time in the
+     * BufferDescriptorInfo.
+     *
+     * The requested pixel format is determined at allocation time and should not change during
+     * the lifetime of the buffer.
+     *
+     * The requested pixel format is a android.hardware.graphics.common@1.2::PixelFormat.
+     *
+     * When it is encoded into a byte stream, it is first cast to a int32_t and then represented in
+     * the byte stream by 4 bytes written in little endian.
+     */
+    PIXEL_FORMAT_REQUESTED = 6,
+
+    /**
+     * Can be used to get the fourcc code for the format. Fourcc codes are standard across all
+     * devices of the same kernel version. Fourcc codes must follow the Linux definition of a
+     * fourcc format found in: include/uapi/drm/drm_fourcc.h.
+     *
+     * The pixel format fourcc code is represented by a uint32_t.
+     *
+     * When it is encoded into a byte stream, it is represented by 4 bytes written in little endian.
+     */
+    PIXEL_FORMAT_FOURCC = 7,
+
+    /**
+     * Can be used to get the modifier for the format. Together fourcc and modifier describe the
+     * real pixel format. Each fourcc and modifier pair is unique and must fully define the format
+     * and layout of the buffer. Modifiers can change any property of the buffer. Modifiers must
+     * follow the Linux definition of a modifier found in: include/uapi/drm/drm_fourcc.h.
+     *
+     * The pixel format modifier is represented by a uint64_t.
+     *
+     * When it is encoded into a byte stream, it is represented by 8 bytes written in little endian.
+     */
+    PIXEL_FORMAT_MODIFIER = 8,
+
+    /**
+     * Can be used to get the usage requested at allocation time in the BufferDescriptorInfo.
+     *
+     * The usage is determined at allocation time and should not change during the lifetime
+     * of the buffer.
+     *
+     * The usage is a uint64_t bit field of android.hardware.graphics.common@1.2::BufferUsage's.
+     *
+     * When it is encoded into a byte stream, it is represented by 8 bytes written in little endian.
+     */
+    USAGE = 9,
+
+    /**
+     * Can be used to get the total size in bytes of any memory used by the buffer including its
+     * metadata and extra padding. This is the total number of bytes used by the buffer allocation.
+     *
+     * The allocation size is a uint64_t.
+     *
+     * When it is encoded into a byte stream, it is represented by 8 bytes written in little endian.
+     */
+    ALLOCATION_SIZE = 10,
+
+    /**
+     * Can be used to get if a buffer has protected content. If the buffer does not have protected
+     * content, this should return 0. If a buffer has protected content, this should return 1.
+     *
+     * In future versions, this field will be extended to expose more information about the type
+     * of protected content in the buffer.
+     *
+     * The protected content is a uint64_t.
+     *
+     * When it is encoded into a byte stream, it is represented by 8 bytes written in little endian.
+     */
+    PROTECTED_CONTENT = 11,
+
+    /**
+     * Can be used to get the compression strategy of the buffer. If the device has more than one
+     * compression strategy, it should have different unique values for each compression
+     * strategy.
+     *
+     * Compression is a stable aidl android.hardware.graphics.common.ExtendableType.
+     *
+     * android.hardware.graphics.common.Compression defines the standard compression
+     * strategies. Vendors may extend this type to include any compression strategies.
+     *
+     * When it is encoded into a byte stream, the length of the name field string is written using
+     * 8 bytes in little endian. It is followed by a char array of the string's
+     * characters. The array is not null-terminated. Finally the value field is written as 8 bytes
+     * in little endian.
+     */
+    COMPRESSION = 12,
+
+    /**
+     * Can be used to get how the buffer's planes are interlaced.
+     *
+     * Interlaced is a stable aidl android.hardware.graphics.common.ExtendableType.
+     *
+     * android.hardware.graphics.common.Interlaced defines the standard interlaced
+     * strategies. Vendors may extend this type to include any non-standard interlaced
+     * strategies.
+     *
+     * When it is encoded into a byte stream, the length of the name field string is written using
+     * 8 bytes in little endian. It is followed by a char array of the string's
+     * characters. The array is not null-terminated. Finally the value field is written as 8 bytes
+     * in little endian.
+     */
+    INTERLACED = 13,
+
+    /**
+     * Can be used to get the chroma siting of a buffer.
+     *
+     * Chroma siting is a stable aidl android.hardware.graphics.common.ExtendableType.
+     *
+     * android.hardware.graphics.common.ChromaSiting defines the standard chroma
+     * sitings. Vendors may extend this type to include any non-standard chroma sitings.
+     *
+     * When it is encoded into a byte stream, the length of the name field string is written using
+     * 8 bytes in little endian. It is followed by a char array of the string's
+     * characters. The array is not null-terminated. Finally the value field is written as 8 bytes
+     * in little endian.
+     */
+    CHROMA_SITING = 14,
+
+    /**
+     * Can be used to get the PlaneLayout(s) of the buffer. There should be one PlaneLayout per
+     * plane in the buffer. For example if the buffer only has one plane, only one PlaneLayout
+     * should be returned.
+     *
+     * If the buffer has planes interlaced through time, the returned PlaneLayout structs should be
+     * ordered by time. The nth PlaneLayout should be from the same time or earlier than the
+     * n+1 PlaneLayout.
+     *
+     * The plane layout is a list of stable aidl android.hardware.graphics.common.PlaneLayout's.
+     *
+     * When it is encoded into a byte stream, the total number of PlaneLayouts is written using
+     * 8 bytes in little endian. It is followed by each PlaneLayout.
+     *
+     * To encode a PlaneLayout, write the length of its PlaneLayoutComponent[] components
+     * field as 8 bytes in little endian and then encode each of its components. Finally, write the
+     * following fields in this order each as 8 bytes in little endian: offsetInBytes,
+     * sampleIncrementInBits, strideInBytes, widthInSamples, totalSizeInBytes,
+     * horizontalSubsampling, verticalSubsampling.
+     *
+     * To encode a PlaneLayoutComponent, encode its PlaneLayoutComponentType type field. Next
+     * encode offsetInBits followed by sizeInBits each as 8 bytes in little endian.
+     *
+     * To encode a PlaneLayoutComponentType, write the length of the name field string as
+     * 8 bytes in little endian. It is followed by a char array of the string's
+     * characters. The array is not null-terminated. Finally the value field is written as 8 bytes
+     * in little endian.
+     */
+    PLANE_LAYOUTS = 15,
+
+    /**
+     * Can be used to get or set the dataspace of the buffer. The framework may attempt to set
+     * this value.
+     *
+     * The default dataspace is Dataspace::UNKNOWN. If this dataspace is set to any valid value
+     * other than Dataspace::UNKNOWN, this dataspace overrides all other dataspaces. For example,
+     * if the buffer has Dataspace::DISPLAY_P3 and it is being displayed on a composer Layer that
+     * is Dataspace::sRGB, the buffer should be treated as a DISPLAY_P3 buffer.
+     *
+     * The dataspace is a stable aidl android.hardware.graphics.common.Dataspace.
+     *
+     * When it is encoded into a byte stream, it is first cast to a int32_t and then represented in
+     * the byte stream by 4 bytes written in little endian.
+     */
+    DATASPACE = 16,
+
+    /**
+     * Can be used to get or set the BlendMode. The framework may attempt to set this value.
+     *
+     * The default blend mode is INVALID. If the BlendMode is set to any
+     * valid value other than INVALID, this BlendMode overrides all other
+     * blend modes. For a longer description of this behavior see MetadataType::DATASPACE.
+     *
+     * The blend mode is a stable aidl android.hardware.graphics.common.BlendMode.
+     *
+     * When it is encoded into a byte stream, it is first cast to a int32_t and then represented by
+     * 4 bytes written in little endian.
+     */
+    BLEND_MODE = 17,
+
+    /**
+     * Can be used to get or set static HDR metadata specified by SMPTE ST 2086.
+     *
+     * This metadata is a stable aidl android.hardware.graphics.common.Smpte2086.
+     *
+     * This is not used in tone mapping until it has been set for the first time.
+     *
+     * When it is encoded into a byte stream, each float member is represented by 4 bytes written in
+     * little endian. The ordering of float values follows the definition of Smpte2086 and XyColor.
+     * If this is unset when encoded into a byte stream, the byte stream is empty.
+     */
+    SMPTE2086 = 18,
+
+    /**
+     * Can be used to get or set static HDR metadata specified by CTA 861.3.
+     *
+     * This metadata is a stable aidl android.hardware.graphics.common.Cta861_3.
+     *
+     * This is not used in tone mapping until it has been set for the first time.
+     *
+     * When it is encoded into a byte stream, each float member is represented by 4 bytes written in
+     * little endian. The ordering of float values follows the definition of Cta861_3.
+     * If this is unset when encoded into a byte stream, the byte stream is empty.
+     */
+    CTA861_3 = 19,
+
+    /**
+     * Can be used to get or set dynamic HDR metadata specified by SMPTE ST 2094-40:2016.
+     *
+     * This metadata is uint8_t byte array.
+     *
+     * This is not used in tone mapping until it has been set for the first time.
+     *
+     * When it is encoded into a byte stream, the length of the HDR metadata byte array is written
+     * using 8 bytes in little endian. It is followed by the uint8_t byte array.
+     * If this is unset when encoded into a byte stream, the byte stream is empty.
+     */
+    SMPTE2094_40 = 20,
+}
diff --git a/graphics/common/aidl/android/hardware/graphics/common/XyColor.aidl b/graphics/common/aidl/android/hardware/graphics/common/XyColor.aidl
new file mode 100644
index 0000000..9571273
--- /dev/null
+++ b/graphics/common/aidl/android/hardware/graphics/common/XyColor.aidl
@@ -0,0 +1,30 @@
+/**
+ * Copyright (c) 2019, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.common;
+
+/**
+ * Chromaticity based on 2 parameters.
+ *
+ * This is an AIDL counterpart of the NDK struct `AColor_xy`.
+ *
+ * @note This can be used to represent any 2-dimensional chromaticity.
+ */
+@VintfStability
+parcelable XyColor {
+    float x;
+    float y;
+}
diff --git a/graphics/composer/2.1/default/Android.bp b/graphics/composer/2.1/default/Android.bp
index 6157719..533687b 100644
--- a/graphics/composer/2.1/default/Android.bp
+++ b/graphics/composer/2.1/default/Android.bp
@@ -9,8 +9,7 @@
     ],
     shared_libs: [
         "android.hardware.graphics.composer@2.1",
-        "android.hardware.graphics.mapper@2.0",
-        "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.composer@2.1-resources",
         "libbase",
         "libcutils",
         "libfmq",
diff --git a/graphics/composer/2.1/utils/command-buffer/include/composer-command-buffer/2.1/ComposerCommandBuffer.h b/graphics/composer/2.1/utils/command-buffer/include/composer-command-buffer/2.1/ComposerCommandBuffer.h
index ebac2e0..499d3b9 100644
--- a/graphics/composer/2.1/utils/command-buffer/include/composer-command-buffer/2.1/ComposerCommandBuffer.h
+++ b/graphics/composer/2.1/utils/command-buffer/include/composer-command-buffer/2.1/ComposerCommandBuffer.h
@@ -403,6 +403,11 @@
     }
 
    protected:
+     template <typename T>
+     void beginCommand(T command, uint16_t length) {
+         beginCommandBase(static_cast<IComposerClient::Command>(command), length);
+     }
+
     void setClientTargetInternal(uint32_t slot, const native_handle_t* target, int acquireFence,
                                  int32_t dataspace,
                                  const std::vector<IComposerClient::Rect>& damage) {
@@ -429,7 +434,7 @@
         endCommand();
     }
 
-    void beginCommand(IComposerClient::Command command, uint16_t length) {
+    void beginCommandBase(IComposerClient::Command command, uint16_t length) {
         if (mCommandEnd) {
             LOG_FATAL("endCommand was not called before command 0x%x", command);
         }
@@ -621,9 +626,15 @@
     }
 
    protected:
+     template <typename T>
+     bool beginCommand(T* outCommand, uint16_t* outLength) {
+         return beginCommandBase(reinterpret_cast<IComposerClient::Command*>(outCommand),
+                                 outLength);
+     }
+
     bool isEmpty() const { return (mDataRead >= mDataSize); }
 
-    bool beginCommand(IComposerClient::Command* outCommand, uint16_t* outLength) {
+    bool beginCommandBase(IComposerClient::Command* outCommand, uint16_t* outLength) {
         if (mCommandEnd) {
             LOG_FATAL("endCommand was not called for last command");
         }
diff --git a/graphics/composer/2.1/utils/hal/Android.bp b/graphics/composer/2.1/utils/hal/Android.bp
index 7a501fc..ea3666d 100644
--- a/graphics/composer/2.1/utils/hal/Android.bp
+++ b/graphics/composer/2.1/utils/hal/Android.bp
@@ -19,14 +19,12 @@
     vendor_available: true,
     shared_libs: [
         "android.hardware.graphics.composer@2.1",
-        "android.hardware.graphics.mapper@2.0",
-        "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.composer@2.1-resources",
         "libhardware", // TODO remove hwcomposer2.h dependency
     ],
     export_shared_lib_headers: [
         "android.hardware.graphics.composer@2.1",
-        "android.hardware.graphics.mapper@2.0",
-        "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.composer@2.1-resources",
         "libhardware",
     ],
     header_libs: [
diff --git a/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/Composer.h b/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/Composer.h
index 90d9b98..4b8c6bb 100644
--- a/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/Composer.h
+++ b/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/Composer.h
@@ -67,6 +67,14 @@
             }
         }
 
+        // we do not have HWC2_CAPABILITY_SKIP_VALIDATE defined in
+        // IComposer::Capability.  However, this is defined in hwcomposer2.h,
+        // so if the device returns it, add it manually to be returned to the
+        // client
+        if (mHal->hasCapability(HWC2_CAPABILITY_SKIP_VALIDATE)) {
+            caps.push_back(static_cast<IComposer::Capability>(HWC2_CAPABILITY_SKIP_VALIDATE));
+        }
+
         hidl_vec<IComposer::Capability> caps_reply;
         caps_reply.setToExternal(caps.data(), caps.size());
         hidl_cb(caps_reply);
@@ -80,8 +88,7 @@
 
     Return<void> createClient(IComposer::createClient_cb hidl_cb) override {
         std::unique_lock<std::mutex> lock(mClientMutex);
-        bool destroyed = waitForClientDestroyedLocked(lock);
-        if (!destroyed) {
+        if (!waitForClientDestroyedLocked(lock)) {
             hidl_cb(Error::NO_RESOURCES, nullptr);
             return Void();
         }
diff --git a/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerClient.h b/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerClient.h
index 095189f..47ead41 100644
--- a/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerClient.h
+++ b/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerClient.h
@@ -27,7 +27,7 @@
 #include <android/hardware/graphics/composer/2.1/IComposerClient.h>
 #include <composer-hal/2.1/ComposerCommandEngine.h>
 #include <composer-hal/2.1/ComposerHal.h>
-#include <composer-hal/2.1/ComposerResources.h>
+#include <composer-resources/2.1/ComposerResources.h>
 #include <log/log.h>
 
 namespace android {
diff --git a/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerCommandEngine.h b/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerCommandEngine.h
index d87110a..ab67eb1 100644
--- a/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerCommandEngine.h
+++ b/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerCommandEngine.h
@@ -24,7 +24,7 @@
 
 #include <composer-command-buffer/2.1/ComposerCommandBuffer.h>
 #include <composer-hal/2.1/ComposerHal.h>
-#include <composer-hal/2.1/ComposerResources.h>
+#include <composer-resources/2.1/ComposerResources.h>
 // TODO remove hwcomposer_defs.h dependency
 #include <hardware/hwcomposer_defs.h>
 #include <log/log.h>
@@ -39,8 +39,10 @@
 // TODO own a CommandReaderBase rather than subclassing
 class ComposerCommandEngine : protected CommandReaderBase {
    public:
-    ComposerCommandEngine(ComposerHal* hal, ComposerResources* resources)
-        : mHal(hal), mResources(resources) {}
+     ComposerCommandEngine(ComposerHal* hal, ComposerResources* resources)
+         : mHal(hal), mResources(resources) {
+         mWriter = createCommandWriter(kWriterInitialSize);
+     }
 
     virtual ~ComposerCommandEngine() = default;
 
@@ -74,16 +76,16 @@
             return Error::BAD_PARAMETER;
         }
 
-        return mWriter.writeQueue(outQueueChanged, outCommandLength, outCommandHandles)
-                   ? Error::NONE
-                   : Error::NO_RESOURCES;
+        return mWriter->writeQueue(outQueueChanged, outCommandLength, outCommandHandles)
+                       ? Error::NONE
+                       : Error::NO_RESOURCES;
     }
 
-    const MQDescriptorSync<uint32_t>* getOutputMQDescriptor() { return mWriter.getMQDescriptor(); }
+    const MQDescriptorSync<uint32_t>* getOutputMQDescriptor() { return mWriter->getMQDescriptor(); }
 
     void reset() {
         CommandReaderBase::reset();
-        mWriter.reset();
+        mWriter->reset();
     }
 
    protected:
@@ -140,13 +142,36 @@
         }
     }
 
+    virtual std::unique_ptr<CommandWriterBase> createCommandWriter(size_t writerInitialSize) {
+        return std::make_unique<CommandWriterBase>(writerInitialSize);
+    }
+
+    virtual Error executeValidateDisplayInternal() {
+        std::vector<Layer> changedLayers;
+        std::vector<IComposerClient::Composition> compositionTypes;
+        uint32_t displayRequestMask = 0x0;
+        std::vector<Layer> requestedLayers;
+        std::vector<uint32_t> requestMasks;
+
+        auto err = mHal->validateDisplay(mCurrentDisplay, &changedLayers, &compositionTypes,
+                                         &displayRequestMask, &requestedLayers, &requestMasks);
+        mResources->setDisplayMustValidateState(mCurrentDisplay, false);
+        if (err == Error::NONE) {
+            mWriter->setChangedCompositionTypes(changedLayers, compositionTypes);
+            mWriter->setDisplayRequests(displayRequestMask, requestedLayers, requestMasks);
+        } else {
+            mWriter->setError(getCommandLoc(), err);
+        }
+        return err;
+    }
+
     bool executeSelectDisplay(uint16_t length) {
         if (length != CommandWriterBase::kSelectDisplayLength) {
             return false;
         }
 
         mCurrentDisplay = read64();
-        mWriter.selectDisplay(mCurrentDisplay);
+        mWriter->selectDisplay(mCurrentDisplay);
 
         return true;
     }
@@ -174,7 +199,7 @@
 
         auto err = mHal->setColorTransform(mCurrentDisplay, matrix, transform);
         if (err != Error::NONE) {
-            mWriter.setError(getCommandLoc(), err);
+            mWriter->setError(getCommandLoc(), err);
         }
 
         return true;
@@ -195,7 +220,7 @@
         bool closeFence = true;
 
         const native_handle_t* clientTarget;
-        ComposerResources::ReplacedBufferHandle replacedClientTarget;
+        ComposerResources::ReplacedHandle replacedClientTarget(true);
         auto err = mResources->getDisplayClientTarget(mCurrentDisplay, slot, useCache, rawHandle,
                                                       &clientTarget, &replacedClientTarget);
         if (err == Error::NONE) {
@@ -208,7 +233,7 @@
             close(fence);
         }
         if (err != Error::NONE) {
-            mWriter.setError(getCommandLoc(), err);
+            mWriter->setError(getCommandLoc(), err);
         }
 
         return true;
@@ -226,7 +251,7 @@
         bool closeFence = true;
 
         const native_handle_t* outputBuffer;
-        ComposerResources::ReplacedBufferHandle replacedOutputBuffer;
+        ComposerResources::ReplacedHandle replacedOutputBuffer(true);
         auto err = mResources->getDisplayOutputBuffer(mCurrentDisplay, slot, useCache, rawhandle,
                                                       &outputBuffer, &replacedOutputBuffer);
         if (err == Error::NONE) {
@@ -239,7 +264,7 @@
             close(fence);
         }
         if (err != Error::NONE) {
-            mWriter.setError(getCommandLoc(), err);
+            mWriter->setError(getCommandLoc(), err);
         }
 
         return true;
@@ -249,23 +274,7 @@
         if (length != CommandWriterBase::kValidateDisplayLength) {
             return false;
         }
-
-        std::vector<Layer> changedLayers;
-        std::vector<IComposerClient::Composition> compositionTypes;
-        uint32_t displayRequestMask = 0x0;
-        std::vector<Layer> requestedLayers;
-        std::vector<uint32_t> requestMasks;
-
-        auto err = mHal->validateDisplay(mCurrentDisplay, &changedLayers, &compositionTypes,
-                                         &displayRequestMask, &requestedLayers, &requestMasks);
-        mResources->setDisplayMustValidateState(mCurrentDisplay, false);
-        if (err == Error::NONE) {
-            mWriter.setChangedCompositionTypes(changedLayers, compositionTypes);
-            mWriter.setDisplayRequests(displayRequestMask, requestedLayers, requestMasks);
-        } else {
-            mWriter.setError(getCommandLoc(), err);
-        }
-
+        executeValidateDisplayInternal();
         return true;
     }
 
@@ -283,29 +292,17 @@
                            ? Error::NOT_VALIDATED
                            : mHal->presentDisplay(mCurrentDisplay, &presentFence, &layers, &fences);
             if (err == Error::NONE) {
-                mWriter.setPresentOrValidateResult(1);
-                mWriter.setPresentFence(presentFence);
-                mWriter.setReleaseFences(layers, fences);
+                mWriter->setPresentOrValidateResult(1);
+                mWriter->setPresentFence(presentFence);
+                mWriter->setReleaseFences(layers, fences);
                 return true;
             }
         }
 
         // Present has failed. We need to fallback to validate
-        std::vector<Layer> changedLayers;
-        std::vector<IComposerClient::Composition> compositionTypes;
-        uint32_t displayRequestMask = 0x0;
-        std::vector<Layer> requestedLayers;
-        std::vector<uint32_t> requestMasks;
-
-        auto err = mHal->validateDisplay(mCurrentDisplay, &changedLayers, &compositionTypes,
-                                         &displayRequestMask, &requestedLayers, &requestMasks);
-        mResources->setDisplayMustValidateState(mCurrentDisplay, false);
+        auto err = executeValidateDisplayInternal();
         if (err == Error::NONE) {
-            mWriter.setPresentOrValidateResult(0);
-            mWriter.setChangedCompositionTypes(changedLayers, compositionTypes);
-            mWriter.setDisplayRequests(displayRequestMask, requestedLayers, requestMasks);
-        } else {
-            mWriter.setError(getCommandLoc(), err);
+            mWriter->setPresentOrValidateResult(0);
         }
 
         return true;
@@ -318,7 +315,7 @@
 
         auto err = mHal->acceptDisplayChanges(mCurrentDisplay);
         if (err != Error::NONE) {
-            mWriter.setError(getCommandLoc(), err);
+            mWriter->setError(getCommandLoc(), err);
         }
 
         return true;
@@ -334,10 +331,10 @@
         std::vector<int> fences;
         auto err = mHal->presentDisplay(mCurrentDisplay, &presentFence, &layers, &fences);
         if (err == Error::NONE) {
-            mWriter.setPresentFence(presentFence);
-            mWriter.setReleaseFences(layers, fences);
+            mWriter->setPresentFence(presentFence);
+            mWriter->setReleaseFences(layers, fences);
         } else {
-            mWriter.setError(getCommandLoc(), err);
+            mWriter->setError(getCommandLoc(), err);
         }
 
         return true;
@@ -351,7 +348,7 @@
         auto err = mHal->setLayerCursorPosition(mCurrentDisplay, mCurrentLayer, readSigned(),
                                                 readSigned());
         if (err != Error::NONE) {
-            mWriter.setError(getCommandLoc(), err);
+            mWriter->setError(getCommandLoc(), err);
         }
 
         return true;
@@ -369,7 +366,7 @@
         bool closeFence = true;
 
         const native_handle_t* buffer;
-        ComposerResources::ReplacedBufferHandle replacedBuffer;
+        ComposerResources::ReplacedHandle replacedBuffer(true);
         auto err = mResources->getLayerBuffer(mCurrentDisplay, mCurrentLayer, slot, useCache,
                                               rawHandle, &buffer, &replacedBuffer);
         if (err == Error::NONE) {
@@ -382,7 +379,7 @@
             close(fence);
         }
         if (err != Error::NONE) {
-            mWriter.setError(getCommandLoc(), err);
+            mWriter->setError(getCommandLoc(), err);
         }
 
         return true;
@@ -397,7 +394,7 @@
         auto damage = readRegion(length / 4);
         auto err = mHal->setLayerSurfaceDamage(mCurrentDisplay, mCurrentLayer, damage);
         if (err != Error::NONE) {
-            mWriter.setError(getCommandLoc(), err);
+            mWriter->setError(getCommandLoc(), err);
         }
 
         return true;
@@ -410,7 +407,7 @@
 
         auto err = mHal->setLayerBlendMode(mCurrentDisplay, mCurrentLayer, readSigned());
         if (err != Error::NONE) {
-            mWriter.setError(getCommandLoc(), err);
+            mWriter->setError(getCommandLoc(), err);
         }
 
         return true;
@@ -423,7 +420,7 @@
 
         auto err = mHal->setLayerColor(mCurrentDisplay, mCurrentLayer, readColor());
         if (err != Error::NONE) {
-            mWriter.setError(getCommandLoc(), err);
+            mWriter->setError(getCommandLoc(), err);
         }
 
         return true;
@@ -436,7 +433,7 @@
 
         auto err = mHal->setLayerCompositionType(mCurrentDisplay, mCurrentLayer, readSigned());
         if (err != Error::NONE) {
-            mWriter.setError(getCommandLoc(), err);
+            mWriter->setError(getCommandLoc(), err);
         }
 
         return true;
@@ -449,7 +446,7 @@
 
         auto err = mHal->setLayerDataspace(mCurrentDisplay, mCurrentLayer, readSigned());
         if (err != Error::NONE) {
-            mWriter.setError(getCommandLoc(), err);
+            mWriter->setError(getCommandLoc(), err);
         }
 
         return true;
@@ -462,7 +459,7 @@
 
         auto err = mHal->setLayerDisplayFrame(mCurrentDisplay, mCurrentLayer, readRect());
         if (err != Error::NONE) {
-            mWriter.setError(getCommandLoc(), err);
+            mWriter->setError(getCommandLoc(), err);
         }
 
         return true;
@@ -475,7 +472,7 @@
 
         auto err = mHal->setLayerPlaneAlpha(mCurrentDisplay, mCurrentLayer, readFloat());
         if (err != Error::NONE) {
-            mWriter.setError(getCommandLoc(), err);
+            mWriter->setError(getCommandLoc(), err);
         }
 
         return true;
@@ -489,14 +486,14 @@
         auto rawHandle = readHandle();
 
         const native_handle_t* stream;
-        ComposerResources::ReplacedStreamHandle replacedStream;
+        ComposerResources::ReplacedHandle replacedStream(false);
         auto err = mResources->getLayerSidebandStream(mCurrentDisplay, mCurrentLayer, rawHandle,
                                                       &stream, &replacedStream);
         if (err == Error::NONE) {
             err = mHal->setLayerSidebandStream(mCurrentDisplay, mCurrentLayer, stream);
         }
         if (err != Error::NONE) {
-            mWriter.setError(getCommandLoc(), err);
+            mWriter->setError(getCommandLoc(), err);
         }
 
         return true;
@@ -509,7 +506,7 @@
 
         auto err = mHal->setLayerSourceCrop(mCurrentDisplay, mCurrentLayer, readFRect());
         if (err != Error::NONE) {
-            mWriter.setError(getCommandLoc(), err);
+            mWriter->setError(getCommandLoc(), err);
         }
 
         return true;
@@ -522,7 +519,7 @@
 
         auto err = mHal->setLayerTransform(mCurrentDisplay, mCurrentLayer, readSigned());
         if (err != Error::NONE) {
-            mWriter.setError(getCommandLoc(), err);
+            mWriter->setError(getCommandLoc(), err);
         }
 
         return true;
@@ -537,7 +534,7 @@
         auto region = readRegion(length / 4);
         auto err = mHal->setLayerVisibleRegion(mCurrentDisplay, mCurrentLayer, region);
         if (err != Error::NONE) {
-            mWriter.setError(getCommandLoc(), err);
+            mWriter->setError(getCommandLoc(), err);
         }
 
         return true;
@@ -550,7 +547,7 @@
 
         auto err = mHal->setLayerZOrder(mCurrentDisplay, mCurrentLayer, read());
         if (err != Error::NONE) {
-            mWriter.setError(getCommandLoc(), err);
+            mWriter->setError(getCommandLoc(), err);
         }
 
         return true;
@@ -579,12 +576,12 @@
         };
     }
 
-    ComposerHal* mHal;
-    ComposerResources* mResources;
-
     // 64KiB minus a small space for metadata such as read/write pointers
     static constexpr size_t kWriterInitialSize = 64 * 1024 / sizeof(uint32_t) - 16;
-    CommandWriterBase mWriter{kWriterInitialSize};
+
+    ComposerHal* mHal;
+    ComposerResources* mResources;
+    std::unique_ptr<CommandWriterBase> mWriter;
 
     Display mCurrentDisplay = 0;
     Layer mCurrentLayer = 0;
diff --git a/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerResources.h b/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerResources.h
deleted file mode 100644
index 18d184e..0000000
--- a/graphics/composer/2.1/utils/hal/include/composer-hal/2.1/ComposerResources.h
+++ /dev/null
@@ -1,592 +0,0 @@
-/*
- * Copyright 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#ifndef LOG_TAG
-#warning "ComposerResources.h included without LOG_TAG"
-#endif
-
-#include <memory>
-#include <mutex>
-#include <unordered_map>
-#include <vector>
-
-#include <android/hardware/graphics/mapper/2.0/IMapper.h>
-#include <android/hardware/graphics/mapper/3.0/IMapper.h>
-#include <log/log.h>
-
-namespace android {
-namespace hardware {
-namespace graphics {
-namespace composer {
-namespace V2_1 {
-namespace hal {
-
-// wrapper for IMapper to import buffers and sideband streams
-class ComposerHandleImporter {
-   public:
-    bool init() {
-        mMapper3 = mapper::V3_0::IMapper::getService();
-        if (mMapper3) {
-            return true;
-        }
-        ALOGD_IF(!mMapper3, "failed to get mapper 3.0 service, falling back to mapper 2.0");
-
-        mMapper2 = mapper::V2_0::IMapper::getService();
-        ALOGE_IF(!mMapper2, "failed to get mapper 2.0 service");
-
-        return mMapper2 != nullptr;
-    }
-
-    Error importBuffer(const native_handle_t* rawHandle, const native_handle_t** outBufferHandle) {
-        if (!rawHandle || (!rawHandle->numFds && !rawHandle->numInts)) {
-            *outBufferHandle = nullptr;
-            return Error::NONE;
-        }
-
-        const native_handle_t* bufferHandle;
-        if (mMapper2) {
-            mapper::V2_0::Error error;
-            mMapper2->importBuffer(
-                rawHandle, [&](const auto& tmpError, const auto& tmpBufferHandle) {
-                    error = tmpError;
-                    bufferHandle = static_cast<const native_handle_t*>(tmpBufferHandle);
-                });
-            if (error != mapper::V2_0::Error::NONE) {
-                return Error::NO_RESOURCES;
-            }
-        }
-        if (mMapper3) {
-            mapper::V3_0::Error error;
-            mMapper3->importBuffer(
-                rawHandle, [&](const auto& tmpError, const auto& tmpBufferHandle) {
-                    error = tmpError;
-                    bufferHandle = static_cast<const native_handle_t*>(tmpBufferHandle);
-                });
-            if (error != mapper::V3_0::Error::NONE) {
-                return Error::NO_RESOURCES;
-            }
-        }
-
-        *outBufferHandle = bufferHandle;
-        return Error::NONE;
-    }
-
-    void freeBuffer(const native_handle_t* bufferHandle) {
-        if (bufferHandle) {
-            if (mMapper2) {
-                mMapper2->freeBuffer(
-                    static_cast<void*>(const_cast<native_handle_t*>(bufferHandle)));
-            } else if (mMapper3) {
-                mMapper3->freeBuffer(
-                    static_cast<void*>(const_cast<native_handle_t*>(bufferHandle)));
-            }
-        }
-    }
-
-    Error importStream(const native_handle_t* rawHandle, const native_handle_t** outStreamHandle) {
-        const native_handle_t* streamHandle = nullptr;
-        if (rawHandle) {
-            streamHandle = native_handle_clone(rawHandle);
-            if (!streamHandle) {
-                return Error::NO_RESOURCES;
-            }
-        }
-
-        *outStreamHandle = streamHandle;
-        return Error::NONE;
-    }
-
-    void freeStream(const native_handle_t* streamHandle) {
-        if (streamHandle) {
-            native_handle_close(streamHandle);
-            native_handle_delete(const_cast<native_handle_t*>(streamHandle));
-        }
-    }
-
-   private:
-    sp<mapper::V2_0::IMapper> mMapper2;
-    sp<mapper::V3_0::IMapper> mMapper3;
-};
-
-class ComposerHandleCache {
-   public:
-    enum class HandleType {
-        INVALID,
-        BUFFER,
-        STREAM,
-    };
-
-    ComposerHandleCache(ComposerHandleImporter& importer, HandleType type, uint32_t cacheSize)
-        : mImporter(importer), mHandleType(type), mHandles(cacheSize, nullptr) {}
-
-    // must be initialized later with initCache
-    ComposerHandleCache(ComposerHandleImporter& importer) : mImporter(importer) {}
-
-    ~ComposerHandleCache() {
-        switch (mHandleType) {
-            case HandleType::BUFFER:
-                for (auto handle : mHandles) {
-                    mImporter.freeBuffer(handle);
-                }
-                break;
-            case HandleType::STREAM:
-                for (auto handle : mHandles) {
-                    mImporter.freeStream(handle);
-                }
-                break;
-            default:
-                break;
-        }
-    }
-
-    ComposerHandleCache(const ComposerHandleCache&) = delete;
-    ComposerHandleCache& operator=(const ComposerHandleCache&) = delete;
-
-    bool initCache(HandleType type, uint32_t cacheSize) {
-        // already initialized
-        if (mHandleType != HandleType::INVALID) {
-            return false;
-        }
-
-        mHandleType = type;
-        mHandles.resize(cacheSize, nullptr);
-
-        return true;
-    }
-
-    Error lookupCache(uint32_t slot, const native_handle_t** outHandle) {
-        if (slot >= 0 && slot < mHandles.size()) {
-            *outHandle = mHandles[slot];
-            return Error::NONE;
-        } else {
-            return Error::BAD_PARAMETER;
-        }
-    }
-
-    Error updateCache(uint32_t slot, const native_handle_t* handle,
-                      const native_handle** outReplacedHandle) {
-        if (slot >= 0 && slot < mHandles.size()) {
-            auto& cachedHandle = mHandles[slot];
-            *outReplacedHandle = cachedHandle;
-            cachedHandle = handle;
-            return Error::NONE;
-        } else {
-            return Error::BAD_PARAMETER;
-        }
-    }
-
-    // when fromCache is true, look up in the cache; otherwise, update the cache
-    Error getHandle(uint32_t slot, bool fromCache, const native_handle_t* inHandle,
-                    const native_handle_t** outHandle, const native_handle** outReplacedHandle) {
-        if (fromCache) {
-            *outReplacedHandle = nullptr;
-            return lookupCache(slot, outHandle);
-        } else {
-            *outHandle = inHandle;
-            return updateCache(slot, inHandle, outReplacedHandle);
-        }
-    }
-
-   private:
-    ComposerHandleImporter& mImporter;
-    HandleType mHandleType = HandleType::INVALID;
-    std::vector<const native_handle_t*> mHandles;
-};
-
-// layer resource
-class ComposerLayerResource {
-   public:
-    ComposerLayerResource(ComposerHandleImporter& importer, uint32_t bufferCacheSize)
-        : mBufferCache(importer, ComposerHandleCache::HandleType::BUFFER, bufferCacheSize),
-          mSidebandStreamCache(importer, ComposerHandleCache::HandleType::STREAM, 1) {}
-
-    virtual ~ComposerLayerResource() = default;
-
-    Error getBuffer(uint32_t slot, bool fromCache, const native_handle_t* inHandle,
-                    const native_handle_t** outHandle, const native_handle** outReplacedHandle) {
-        return mBufferCache.getHandle(slot, fromCache, inHandle, outHandle, outReplacedHandle);
-    }
-
-    Error getSidebandStream(uint32_t slot, bool fromCache, const native_handle_t* inHandle,
-                            const native_handle_t** outHandle,
-                            const native_handle** outReplacedHandle) {
-        return mSidebandStreamCache.getHandle(slot, fromCache, inHandle, outHandle,
-                                              outReplacedHandle);
-    }
-
-   protected:
-    ComposerHandleCache mBufferCache;
-    ComposerHandleCache mSidebandStreamCache;
-};
-
-// display resource
-class ComposerDisplayResource {
-   public:
-    enum class DisplayType {
-        PHYSICAL,
-        VIRTUAL,
-    };
-
-    virtual ~ComposerDisplayResource() = default;
-
-    ComposerDisplayResource(DisplayType type, ComposerHandleImporter& importer,
-                            uint32_t outputBufferCacheSize)
-        : mType(type),
-          mClientTargetCache(importer),
-          mOutputBufferCache(importer, ComposerHandleCache::HandleType::BUFFER,
-                             outputBufferCacheSize),
-          mMustValidate(true) {}
-
-    bool initClientTargetCache(uint32_t cacheSize) {
-        return mClientTargetCache.initCache(ComposerHandleCache::HandleType::BUFFER, cacheSize);
-    }
-
-    bool isVirtual() const { return mType == DisplayType::VIRTUAL; }
-
-    Error getClientTarget(uint32_t slot, bool fromCache, const native_handle_t* inHandle,
-                          const native_handle_t** outHandle,
-                          const native_handle** outReplacedHandle) {
-        return mClientTargetCache.getHandle(slot, fromCache, inHandle, outHandle,
-                                            outReplacedHandle);
-    }
-
-    Error getOutputBuffer(uint32_t slot, bool fromCache, const native_handle_t* inHandle,
-                          const native_handle_t** outHandle,
-                          const native_handle** outReplacedHandle) {
-        return mOutputBufferCache.getHandle(slot, fromCache, inHandle, outHandle,
-                                            outReplacedHandle);
-    }
-
-    bool addLayer(Layer layer, std::unique_ptr<ComposerLayerResource> layerResource) {
-        auto result = mLayerResources.emplace(layer, std::move(layerResource));
-        return result.second;
-    }
-
-    bool removeLayer(Layer layer) { return mLayerResources.erase(layer) > 0; }
-
-    ComposerLayerResource* findLayerResource(Layer layer) {
-        auto layerIter = mLayerResources.find(layer);
-        if (layerIter == mLayerResources.end()) {
-            return nullptr;
-        }
-
-        return layerIter->second.get();
-    }
-
-    std::vector<Layer> getLayers() const {
-        std::vector<Layer> layers;
-        layers.reserve(mLayerResources.size());
-        for (const auto& layerKey : mLayerResources) {
-            layers.push_back(layerKey.first);
-        }
-        return layers;
-    }
-
-    void setMustValidateState(bool mustValidate) { mMustValidate = mustValidate; }
-
-    bool mustValidate() const { return mMustValidate; }
-
-   protected:
-    const DisplayType mType;
-    ComposerHandleCache mClientTargetCache;
-    ComposerHandleCache mOutputBufferCache;
-    bool mMustValidate;
-
-    std::unordered_map<Layer, std::unique_ptr<ComposerLayerResource>> mLayerResources;
-};
-
-class ComposerResources {
-   private:
-    template <bool isBuffer>
-    class ReplacedHandle;
-
-   public:
-    static std::unique_ptr<ComposerResources> create() {
-        auto resources = std::make_unique<ComposerResources>();
-        return resources->init() ? std::move(resources) : nullptr;
-    }
-
-    ComposerResources() = default;
-    virtual ~ComposerResources() = default;
-
-    bool init() { return mImporter.init(); }
-
-    using RemoveDisplay =
-        std::function<void(Display display, bool isVirtual, const std::vector<Layer>& layers)>;
-    void clear(RemoveDisplay removeDisplay) {
-        std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
-        for (const auto& displayKey : mDisplayResources) {
-            Display display = displayKey.first;
-            const ComposerDisplayResource& displayResource = *displayKey.second;
-            removeDisplay(display, displayResource.isVirtual(), displayResource.getLayers());
-        }
-        mDisplayResources.clear();
-    }
-
-    Error addPhysicalDisplay(Display display) {
-        auto displayResource =
-            createDisplayResource(ComposerDisplayResource::DisplayType::PHYSICAL, 0);
-
-        std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
-        auto result = mDisplayResources.emplace(display, std::move(displayResource));
-        return result.second ? Error::NONE : Error::BAD_DISPLAY;
-    }
-
-    Error addVirtualDisplay(Display display, uint32_t outputBufferCacheSize) {
-        auto displayResource = createDisplayResource(ComposerDisplayResource::DisplayType::VIRTUAL,
-                                                     outputBufferCacheSize);
-
-        std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
-        auto result = mDisplayResources.emplace(display, std::move(displayResource));
-        return result.second ? Error::NONE : Error::BAD_DISPLAY;
-    }
-
-    Error removeDisplay(Display display) {
-        std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
-        return mDisplayResources.erase(display) > 0 ? Error::NONE : Error::BAD_DISPLAY;
-    }
-
-    Error setDisplayClientTargetCacheSize(Display display, uint32_t clientTargetCacheSize) {
-        std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
-        ComposerDisplayResource* displayResource = findDisplayResourceLocked(display);
-        if (!displayResource) {
-            return Error::BAD_DISPLAY;
-        }
-
-        return displayResource->initClientTargetCache(clientTargetCacheSize) ? Error::NONE
-                                                                             : Error::BAD_PARAMETER;
-    }
-
-    Error addLayer(Display display, Layer layer, uint32_t bufferCacheSize) {
-        auto layerResource = createLayerResource(bufferCacheSize);
-
-        std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
-        ComposerDisplayResource* displayResource = findDisplayResourceLocked(display);
-        if (!displayResource) {
-            return Error::BAD_DISPLAY;
-        }
-
-        return displayResource->addLayer(layer, std::move(layerResource)) ? Error::NONE
-                                                                          : Error::BAD_LAYER;
-    }
-
-    Error removeLayer(Display display, Layer layer) {
-        std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
-        ComposerDisplayResource* displayResource = findDisplayResourceLocked(display);
-        if (!displayResource) {
-            return Error::BAD_DISPLAY;
-        }
-
-        return displayResource->removeLayer(layer) ? Error::NONE : Error::BAD_LAYER;
-    }
-
-    using ReplacedBufferHandle = ReplacedHandle<true>;
-    using ReplacedStreamHandle = ReplacedHandle<false>;
-
-    Error getDisplayClientTarget(Display display, uint32_t slot, bool fromCache,
-                                 const native_handle_t* rawHandle,
-                                 const native_handle_t** outBufferHandle,
-                                 ReplacedBufferHandle* outReplacedBuffer) {
-        return getHandle<Cache::CLIENT_TARGET>(display, 0, slot, fromCache, rawHandle,
-                                               outBufferHandle, outReplacedBuffer);
-    }
-
-    Error getDisplayOutputBuffer(Display display, uint32_t slot, bool fromCache,
-                                 const native_handle_t* rawHandle,
-                                 const native_handle_t** outBufferHandle,
-                                 ReplacedBufferHandle* outReplacedBuffer) {
-        return getHandle<Cache::OUTPUT_BUFFER>(display, 0, slot, fromCache, rawHandle,
-                                               outBufferHandle, outReplacedBuffer);
-    }
-
-    Error getLayerBuffer(Display display, Layer layer, uint32_t slot, bool fromCache,
-                         const native_handle_t* rawHandle, const native_handle_t** outBufferHandle,
-                         ReplacedBufferHandle* outReplacedBuffer) {
-        return getHandle<Cache::LAYER_BUFFER>(display, layer, slot, fromCache, rawHandle,
-                                              outBufferHandle, outReplacedBuffer);
-    }
-
-    Error getLayerSidebandStream(Display display, Layer layer, const native_handle_t* rawHandle,
-                                 const native_handle_t** outStreamHandle,
-                                 ReplacedStreamHandle* outReplacedStream) {
-        return getHandle<Cache::LAYER_SIDEBAND_STREAM>(display, layer, 0, false, rawHandle,
-                                                       outStreamHandle, outReplacedStream);
-    }
-
-    void setDisplayMustValidateState(Display display, bool mustValidate) {
-        std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
-        auto* displayResource = findDisplayResourceLocked(display);
-        if (displayResource) {
-            displayResource->setMustValidateState(mustValidate);
-        }
-    }
-
-    bool mustValidateDisplay(Display display) {
-        std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
-        auto* displayResource = findDisplayResourceLocked(display);
-        if (displayResource) {
-            return displayResource->mustValidate();
-        }
-        return false;
-    }
-
-   protected:
-    virtual std::unique_ptr<ComposerDisplayResource> createDisplayResource(
-        ComposerDisplayResource::DisplayType type, uint32_t outputBufferCacheSize) {
-        return std::make_unique<ComposerDisplayResource>(type, mImporter, outputBufferCacheSize);
-    }
-
-    virtual std::unique_ptr<ComposerLayerResource> createLayerResource(uint32_t bufferCacheSize) {
-        return std::make_unique<ComposerLayerResource>(mImporter, bufferCacheSize);
-    }
-
-    ComposerDisplayResource* findDisplayResourceLocked(Display display) {
-        auto iter = mDisplayResources.find(display);
-        if (iter == mDisplayResources.end()) {
-            return nullptr;
-        }
-        return iter->second.get();
-    }
-
-    ComposerHandleImporter mImporter;
-
-    std::mutex mDisplayResourcesMutex;
-    std::unordered_map<Display, std::unique_ptr<ComposerDisplayResource>> mDisplayResources;
-
-   private:
-    enum class Cache {
-        CLIENT_TARGET,
-        OUTPUT_BUFFER,
-        LAYER_BUFFER,
-        LAYER_SIDEBAND_STREAM,
-    };
-
-    // When a buffer in the cache is replaced by a new one, we must keep it
-    // alive until it has been replaced in ComposerHal.
-    template <bool isBuffer>
-    class ReplacedHandle {
-       public:
-        ReplacedHandle() = default;
-        ReplacedHandle(const ReplacedHandle&) = delete;
-        ReplacedHandle& operator=(const ReplacedHandle&) = delete;
-
-        ~ReplacedHandle() { reset(); }
-
-        void reset(ComposerHandleImporter* importer = nullptr,
-                   const native_handle_t* handle = nullptr) {
-            if (mHandle) {
-                if (isBuffer) {
-                    mImporter->freeBuffer(mHandle);
-                } else {
-                    mImporter->freeStream(mHandle);
-                }
-            }
-
-            mImporter = importer;
-            mHandle = handle;
-        }
-
-       private:
-        ComposerHandleImporter* mImporter = nullptr;
-        const native_handle_t* mHandle = nullptr;
-    };
-
-    template <Cache cache, bool isBuffer>
-    Error getHandle(Display display, Layer layer, uint32_t slot, bool fromCache,
-                    const native_handle_t* rawHandle, const native_handle_t** outHandle,
-                    ReplacedHandle<isBuffer>* outReplacedHandle) {
-        Error error;
-
-        // import the raw handle (or ignore raw handle when fromCache is true)
-        const native_handle_t* importedHandle = nullptr;
-        if (!fromCache) {
-            error = (isBuffer) ? mImporter.importBuffer(rawHandle, &importedHandle)
-                               : mImporter.importStream(rawHandle, &importedHandle);
-            if (error != Error::NONE) {
-                return error;
-            }
-        }
-
-        std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
-
-        // find display/layer resource
-        const bool needLayerResource =
-            (cache == Cache::LAYER_BUFFER || cache == Cache::LAYER_SIDEBAND_STREAM);
-        ComposerDisplayResource* displayResource = findDisplayResourceLocked(display);
-        ComposerLayerResource* layerResource = (displayResource && needLayerResource)
-                                                   ? displayResource->findLayerResource(layer)
-                                                   : nullptr;
-
-        // lookup or update cache
-        const native_handle_t* replacedHandle = nullptr;
-        if (displayResource && (!needLayerResource || layerResource)) {
-            switch (cache) {
-                case Cache::CLIENT_TARGET:
-                    error = displayResource->getClientTarget(slot, fromCache, importedHandle,
-                                                             outHandle, &replacedHandle);
-                    break;
-                case Cache::OUTPUT_BUFFER:
-                    error = displayResource->getOutputBuffer(slot, fromCache, importedHandle,
-                                                             outHandle, &replacedHandle);
-                    break;
-                case Cache::LAYER_BUFFER:
-                    error = layerResource->getBuffer(slot, fromCache, importedHandle, outHandle,
-                                                     &replacedHandle);
-                    break;
-                case Cache::LAYER_SIDEBAND_STREAM:
-                    error = layerResource->getSidebandStream(slot, fromCache, importedHandle,
-                                                             outHandle, &replacedHandle);
-                    break;
-                default:
-                    error = Error::BAD_PARAMETER;
-                    break;
-            }
-
-            if (error != Error::NONE) {
-                ALOGW("invalid cache %d slot %d", int(cache), int(slot));
-            }
-        } else if (!displayResource) {
-            error = Error::BAD_DISPLAY;
-        } else {
-            error = Error::BAD_LAYER;
-        }
-
-        // clean up on errors
-        if (error != Error::NONE) {
-            if (!fromCache) {
-                if (isBuffer) {
-                    mImporter.freeBuffer(importedHandle);
-                } else {
-                    mImporter.freeStream(importedHandle);
-                }
-            }
-            return error;
-        }
-
-        outReplacedHandle->reset(&mImporter, replacedHandle);
-
-        return Error::NONE;
-    }
-};
-
-}  // namespace hal
-}  // namespace V2_1
-}  // namespace composer
-}  // namespace graphics
-}  // namespace hardware
-}  // namespace android
diff --git a/graphics/composer/2.1/utils/resources/Android.bp b/graphics/composer/2.1/utils/resources/Android.bp
new file mode 100644
index 0000000..ed827fe
--- /dev/null
+++ b/graphics/composer/2.1/utils/resources/Android.bp
@@ -0,0 +1,51 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+cc_library_shared {
+    name: "android.hardware.graphics.composer@2.1-resources",
+    defaults: ["hidl_defaults"],
+    vendor_available: true,
+    shared_libs: [
+        "android.hardware.graphics.composer@2.1",
+        "android.hardware.graphics.mapper@2.0",
+        "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
+        "libcutils",
+        "libhardware", // TODO remove hwcomposer2.h dependency
+        "libhidlbase",
+        "liblog",
+        "libutils",
+    ],
+    export_shared_lib_headers: [
+        "android.hardware.graphics.composer@2.1",
+        "android.hardware.graphics.mapper@2.0",
+        "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@4.0",
+        "libhardware",
+        "libhidlbase",
+        "liblog",
+        "libutils",
+    ],
+    header_libs: [
+        "android.hardware.graphics.composer@2.1-command-buffer",
+    ],
+    export_header_lib_headers: [
+        "android.hardware.graphics.composer@2.1-command-buffer",
+    ],
+    export_include_dirs: ["include"],
+    srcs: [
+        "ComposerResources.cpp",
+    ],
+}
diff --git a/graphics/composer/2.1/utils/resources/ComposerResources.cpp b/graphics/composer/2.1/utils/resources/ComposerResources.cpp
new file mode 100644
index 0000000..21f6035
--- /dev/null
+++ b/graphics/composer/2.1/utils/resources/ComposerResources.cpp
@@ -0,0 +1,503 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "ComposerResources"
+
+#include "composer-resources/2.1/ComposerResources.h"
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_1 {
+namespace hal {
+
+bool ComposerHandleImporter::init() {
+    mMapper4 = mapper::V4_0::IMapper::getService();
+    if (mMapper4) {
+        return true;
+    }
+    ALOGI_IF(!mMapper4, "failed to get mapper 4.0 service, falling back to mapper 3.0");
+
+    mMapper3 = mapper::V3_0::IMapper::getService();
+    if (mMapper3) {
+        return true;
+    }
+    ALOGI_IF(!mMapper3, "failed to get mapper 3.0 service, falling back to mapper 2.0");
+
+    mMapper2 = mapper::V2_0::IMapper::getService();
+    ALOGE_IF(!mMapper2, "failed to get mapper 2.0 service");
+
+    return mMapper2 != nullptr;
+}
+
+Error ComposerHandleImporter::importBuffer(const native_handle_t* rawHandle,
+                                           const native_handle_t** outBufferHandle) {
+    if (!rawHandle || (!rawHandle->numFds && !rawHandle->numInts)) {
+        *outBufferHandle = nullptr;
+        return Error::NONE;
+    }
+
+    const native_handle_t* bufferHandle;
+    if (mMapper2) {
+        mapper::V2_0::Error error;
+        mMapper2->importBuffer(rawHandle, [&](const auto& tmpError, const auto& tmpBufferHandle) {
+            error = tmpError;
+            bufferHandle = static_cast<const native_handle_t*>(tmpBufferHandle);
+        });
+        if (error != mapper::V2_0::Error::NONE) {
+            return Error::NO_RESOURCES;
+        }
+    }
+    if (mMapper3) {
+        mapper::V3_0::Error error;
+        mMapper3->importBuffer(rawHandle, [&](const auto& tmpError, const auto& tmpBufferHandle) {
+            error = tmpError;
+            bufferHandle = static_cast<const native_handle_t*>(tmpBufferHandle);
+        });
+        if (error != mapper::V3_0::Error::NONE) {
+            return Error::NO_RESOURCES;
+        }
+    }
+    if (mMapper4) {
+        mapper::V4_0::Error error;
+        mMapper4->importBuffer(rawHandle, [&](const auto& tmpError, const auto& tmpBufferHandle) {
+            error = tmpError;
+            bufferHandle = static_cast<const native_handle_t*>(tmpBufferHandle);
+        });
+        if (error != mapper::V4_0::Error::NONE) {
+            return Error::NO_RESOURCES;
+        }
+    }
+
+    *outBufferHandle = bufferHandle;
+    return Error::NONE;
+}
+
+void ComposerHandleImporter::freeBuffer(const native_handle_t* bufferHandle) {
+    if (bufferHandle) {
+        if (mMapper2) {
+            mMapper2->freeBuffer(static_cast<void*>(const_cast<native_handle_t*>(bufferHandle)));
+        } else if (mMapper3) {
+            mMapper3->freeBuffer(static_cast<void*>(const_cast<native_handle_t*>(bufferHandle)));
+        } else if (mMapper4) {
+            mMapper4->freeBuffer(static_cast<void*>(const_cast<native_handle_t*>(bufferHandle)));
+        }
+    }
+}
+
+Error ComposerHandleImporter::importStream(const native_handle_t* rawHandle,
+                                           const native_handle_t** outStreamHandle) {
+    const native_handle_t* streamHandle = nullptr;
+    if (rawHandle) {
+        streamHandle = native_handle_clone(rawHandle);
+        if (!streamHandle) {
+            return Error::NO_RESOURCES;
+        }
+    }
+
+    *outStreamHandle = streamHandle;
+    return Error::NONE;
+}
+
+void ComposerHandleImporter::freeStream(const native_handle_t* streamHandle) {
+    if (streamHandle) {
+        native_handle_close(streamHandle);
+        native_handle_delete(const_cast<native_handle_t*>(streamHandle));
+    }
+}
+
+ComposerHandleCache::ComposerHandleCache(ComposerHandleImporter& importer, HandleType type,
+                                         uint32_t cacheSize)
+    : mImporter(importer), mHandleType(type), mHandles(cacheSize, nullptr) {}
+
+// must be initialized later with initCache
+ComposerHandleCache::ComposerHandleCache(ComposerHandleImporter& importer) : mImporter(importer) {}
+
+ComposerHandleCache::~ComposerHandleCache() {
+    switch (mHandleType) {
+        case HandleType::BUFFER:
+            for (auto handle : mHandles) {
+                mImporter.freeBuffer(handle);
+            }
+            break;
+        case HandleType::STREAM:
+            for (auto handle : mHandles) {
+                mImporter.freeStream(handle);
+            }
+            break;
+        default:
+            break;
+    }
+}
+
+bool ComposerHandleCache::initCache(HandleType type, uint32_t cacheSize) {
+    // already initialized
+    if (mHandleType != HandleType::INVALID) {
+        return false;
+    }
+
+    mHandleType = type;
+    mHandles.resize(cacheSize, nullptr);
+
+    return true;
+}
+
+Error ComposerHandleCache::lookupCache(uint32_t slot, const native_handle_t** outHandle) {
+    if (slot >= 0 && slot < mHandles.size()) {
+        *outHandle = mHandles[slot];
+        return Error::NONE;
+    } else {
+        return Error::BAD_PARAMETER;
+    }
+}
+
+Error ComposerHandleCache::updateCache(uint32_t slot, const native_handle_t* handle,
+                                       const native_handle** outReplacedHandle) {
+    if (slot >= 0 && slot < mHandles.size()) {
+        auto& cachedHandle = mHandles[slot];
+        *outReplacedHandle = cachedHandle;
+        cachedHandle = handle;
+        return Error::NONE;
+    } else {
+        return Error::BAD_PARAMETER;
+    }
+}
+
+// when fromCache is true, look up in the cache; otherwise, update the cache
+Error ComposerHandleCache::getHandle(uint32_t slot, bool fromCache, const native_handle_t* inHandle,
+                                     const native_handle_t** outHandle,
+                                     const native_handle** outReplacedHandle) {
+    if (fromCache) {
+        *outReplacedHandle = nullptr;
+        return lookupCache(slot, outHandle);
+    } else {
+        *outHandle = inHandle;
+        return updateCache(slot, inHandle, outReplacedHandle);
+    }
+}
+
+ComposerLayerResource::ComposerLayerResource(ComposerHandleImporter& importer,
+                                             uint32_t bufferCacheSize)
+    : mBufferCache(importer, ComposerHandleCache::HandleType::BUFFER, bufferCacheSize),
+      mSidebandStreamCache(importer, ComposerHandleCache::HandleType::STREAM, 1) {}
+
+Error ComposerLayerResource::getBuffer(uint32_t slot, bool fromCache,
+                                       const native_handle_t* inHandle,
+                                       const native_handle_t** outHandle,
+                                       const native_handle** outReplacedHandle) {
+    return mBufferCache.getHandle(slot, fromCache, inHandle, outHandle, outReplacedHandle);
+}
+
+Error ComposerLayerResource::getSidebandStream(uint32_t slot, bool fromCache,
+                                               const native_handle_t* inHandle,
+                                               const native_handle_t** outHandle,
+                                               const native_handle** outReplacedHandle) {
+    return mSidebandStreamCache.getHandle(slot, fromCache, inHandle, outHandle, outReplacedHandle);
+}
+
+ComposerDisplayResource::ComposerDisplayResource(DisplayType type, ComposerHandleImporter& importer,
+                                                 uint32_t outputBufferCacheSize)
+    : mType(type),
+      mClientTargetCache(importer),
+      mOutputBufferCache(importer, ComposerHandleCache::HandleType::BUFFER, outputBufferCacheSize),
+      mMustValidate(true) {}
+
+bool ComposerDisplayResource::initClientTargetCache(uint32_t cacheSize) {
+    return mClientTargetCache.initCache(ComposerHandleCache::HandleType::BUFFER, cacheSize);
+}
+
+bool ComposerDisplayResource::isVirtual() const {
+    return mType == DisplayType::VIRTUAL;
+}
+
+Error ComposerDisplayResource::getClientTarget(uint32_t slot, bool fromCache,
+                                               const native_handle_t* inHandle,
+                                               const native_handle_t** outHandle,
+                                               const native_handle** outReplacedHandle) {
+    return mClientTargetCache.getHandle(slot, fromCache, inHandle, outHandle, outReplacedHandle);
+}
+
+Error ComposerDisplayResource::getOutputBuffer(uint32_t slot, bool fromCache,
+                                               const native_handle_t* inHandle,
+                                               const native_handle_t** outHandle,
+                                               const native_handle** outReplacedHandle) {
+    return mOutputBufferCache.getHandle(slot, fromCache, inHandle, outHandle, outReplacedHandle);
+}
+
+bool ComposerDisplayResource::addLayer(Layer layer,
+                                       std::unique_ptr<ComposerLayerResource> layerResource) {
+    auto result = mLayerResources.emplace(layer, std::move(layerResource));
+    return result.second;
+}
+
+bool ComposerDisplayResource::removeLayer(Layer layer) {
+    return mLayerResources.erase(layer) > 0;
+}
+
+ComposerLayerResource* ComposerDisplayResource::findLayerResource(Layer layer) {
+    auto layerIter = mLayerResources.find(layer);
+    if (layerIter == mLayerResources.end()) {
+        return nullptr;
+    }
+
+    return layerIter->second.get();
+}
+
+std::vector<Layer> ComposerDisplayResource::getLayers() const {
+    std::vector<Layer> layers;
+    layers.reserve(mLayerResources.size());
+    for (const auto& layerKey : mLayerResources) {
+        layers.push_back(layerKey.first);
+    }
+    return layers;
+}
+
+void ComposerDisplayResource::setMustValidateState(bool mustValidate) {
+    mMustValidate = mustValidate;
+}
+
+bool ComposerDisplayResource::mustValidate() const {
+    return mMustValidate;
+}
+
+std::unique_ptr<ComposerResources> ComposerResources::create() {
+    auto resources = std::make_unique<ComposerResources>();
+    return resources->init() ? std::move(resources) : nullptr;
+}
+
+bool ComposerResources::init() {
+    return mImporter.init();
+}
+
+void ComposerResources::clear(RemoveDisplay removeDisplay) {
+    std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
+    for (const auto& displayKey : mDisplayResources) {
+        Display display = displayKey.first;
+        const ComposerDisplayResource& displayResource = *displayKey.second;
+        removeDisplay(display, displayResource.isVirtual(), displayResource.getLayers());
+    }
+    mDisplayResources.clear();
+}
+
+Error ComposerResources::addPhysicalDisplay(Display display) {
+    auto displayResource = createDisplayResource(ComposerDisplayResource::DisplayType::PHYSICAL, 0);
+
+    std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
+    auto result = mDisplayResources.emplace(display, std::move(displayResource));
+    return result.second ? Error::NONE : Error::BAD_DISPLAY;
+}
+
+Error ComposerResources::addVirtualDisplay(Display display, uint32_t outputBufferCacheSize) {
+    auto displayResource = createDisplayResource(ComposerDisplayResource::DisplayType::VIRTUAL,
+                                                 outputBufferCacheSize);
+
+    std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
+    auto result = mDisplayResources.emplace(display, std::move(displayResource));
+    return result.second ? Error::NONE : Error::BAD_DISPLAY;
+}
+
+Error ComposerResources::removeDisplay(Display display) {
+    std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
+    return mDisplayResources.erase(display) > 0 ? Error::NONE : Error::BAD_DISPLAY;
+}
+
+Error ComposerResources::setDisplayClientTargetCacheSize(Display display,
+                                                         uint32_t clientTargetCacheSize) {
+    std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
+    ComposerDisplayResource* displayResource = findDisplayResourceLocked(display);
+    if (!displayResource) {
+        return Error::BAD_DISPLAY;
+    }
+
+    return displayResource->initClientTargetCache(clientTargetCacheSize) ? Error::NONE
+                                                                         : Error::BAD_PARAMETER;
+}
+
+Error ComposerResources::addLayer(Display display, Layer layer, uint32_t bufferCacheSize) {
+    auto layerResource = createLayerResource(bufferCacheSize);
+
+    std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
+    ComposerDisplayResource* displayResource = findDisplayResourceLocked(display);
+    if (!displayResource) {
+        return Error::BAD_DISPLAY;
+    }
+
+    return displayResource->addLayer(layer, std::move(layerResource)) ? Error::NONE
+                                                                      : Error::BAD_LAYER;
+}
+
+Error ComposerResources::removeLayer(Display display, Layer layer) {
+    std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
+    ComposerDisplayResource* displayResource = findDisplayResourceLocked(display);
+    if (!displayResource) {
+        return Error::BAD_DISPLAY;
+    }
+
+    return displayResource->removeLayer(layer) ? Error::NONE : Error::BAD_LAYER;
+}
+
+Error ComposerResources::getDisplayClientTarget(Display display, uint32_t slot, bool fromCache,
+                                                const native_handle_t* rawHandle,
+                                                const native_handle_t** outBufferHandle,
+                                                ReplacedHandle* outReplacedBuffer) {
+    return getHandle(display, 0, slot, Cache::CLIENT_TARGET, fromCache, rawHandle, outBufferHandle,
+                     outReplacedBuffer);
+}
+
+Error ComposerResources::getDisplayOutputBuffer(Display display, uint32_t slot, bool fromCache,
+                                                const native_handle_t* rawHandle,
+                                                const native_handle_t** outBufferHandle,
+                                                ReplacedHandle* outReplacedBuffer) {
+    return getHandle(display, 0, slot, Cache::OUTPUT_BUFFER, fromCache, rawHandle, outBufferHandle,
+                     outReplacedBuffer);
+}
+
+Error ComposerResources::getLayerBuffer(Display display, Layer layer, uint32_t slot, bool fromCache,
+                                        const native_handle_t* rawHandle,
+                                        const native_handle_t** outBufferHandle,
+                                        ReplacedHandle* outReplacedBuffer) {
+    return getHandle(display, layer, slot, Cache::LAYER_BUFFER, fromCache, rawHandle,
+                     outBufferHandle, outReplacedBuffer);
+}
+
+Error ComposerResources::getLayerSidebandStream(Display display, Layer layer,
+                                                const native_handle_t* rawHandle,
+                                                const native_handle_t** outStreamHandle,
+                                                ReplacedHandle* outReplacedStream) {
+    return getHandle(display, layer, 0, Cache::LAYER_SIDEBAND_STREAM, false, rawHandle,
+                     outStreamHandle, outReplacedStream);
+}
+
+void ComposerResources::setDisplayMustValidateState(Display display, bool mustValidate) {
+    std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
+    auto* displayResource = findDisplayResourceLocked(display);
+    if (displayResource) {
+        displayResource->setMustValidateState(mustValidate);
+    }
+}
+
+bool ComposerResources::mustValidateDisplay(Display display) {
+    std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
+    auto* displayResource = findDisplayResourceLocked(display);
+    if (displayResource) {
+        return displayResource->mustValidate();
+    }
+    return false;
+}
+
+std::unique_ptr<ComposerDisplayResource> ComposerResources::createDisplayResource(
+        ComposerDisplayResource::DisplayType type, uint32_t outputBufferCacheSize) {
+    return std::make_unique<ComposerDisplayResource>(type, mImporter, outputBufferCacheSize);
+}
+
+std::unique_ptr<ComposerLayerResource> ComposerResources::createLayerResource(
+        uint32_t bufferCacheSize) {
+    return std::make_unique<ComposerLayerResource>(mImporter, bufferCacheSize);
+}
+
+ComposerDisplayResource* ComposerResources::findDisplayResourceLocked(Display display) {
+    auto iter = mDisplayResources.find(display);
+    if (iter == mDisplayResources.end()) {
+        return nullptr;
+    }
+    return iter->second.get();
+}
+
+Error ComposerResources::getHandle(Display display, Layer layer, uint32_t slot, Cache cache,
+                                   bool fromCache, const native_handle_t* rawHandle,
+                                   const native_handle_t** outHandle,
+                                   ReplacedHandle* outReplacedHandle) {
+    Error error;
+
+    // import the raw handle (or ignore raw handle when fromCache is true)
+    const native_handle_t* importedHandle = nullptr;
+    if (!fromCache) {
+        error = (outReplacedHandle->isBuffer())
+                        ? mImporter.importBuffer(rawHandle, &importedHandle)
+                        : mImporter.importStream(rawHandle, &importedHandle);
+        if (error != Error::NONE) {
+            return error;
+        }
+    }
+
+    std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
+
+    // find display/layer resource
+    const bool needLayerResource = (cache == ComposerResources::Cache::LAYER_BUFFER ||
+                                    cache == ComposerResources::Cache::LAYER_SIDEBAND_STREAM);
+    ComposerDisplayResource* displayResource = findDisplayResourceLocked(display);
+    ComposerLayerResource* layerResource = (displayResource && needLayerResource)
+                                                   ? displayResource->findLayerResource(layer)
+                                                   : nullptr;
+
+    // lookup or update cache
+    const native_handle_t* replacedHandle = nullptr;
+    if (displayResource && (!needLayerResource || layerResource)) {
+        switch (cache) {
+            case ComposerResources::Cache::CLIENT_TARGET:
+                error = displayResource->getClientTarget(slot, fromCache, importedHandle, outHandle,
+                                                         &replacedHandle);
+                break;
+            case ComposerResources::Cache::OUTPUT_BUFFER:
+                error = displayResource->getOutputBuffer(slot, fromCache, importedHandle, outHandle,
+                                                         &replacedHandle);
+                break;
+            case ComposerResources::Cache::LAYER_BUFFER:
+                error = layerResource->getBuffer(slot, fromCache, importedHandle, outHandle,
+                                                 &replacedHandle);
+                break;
+            case ComposerResources::Cache::LAYER_SIDEBAND_STREAM:
+                error = layerResource->getSidebandStream(slot, fromCache, importedHandle, outHandle,
+                                                         &replacedHandle);
+                break;
+            default:
+                error = Error::BAD_PARAMETER;
+                break;
+        }
+
+        if (error != Error::NONE) {
+            ALOGW("invalid cache %d slot %d", int(cache), int(slot));
+        }
+    } else if (!displayResource) {
+        error = Error::BAD_DISPLAY;
+    } else {
+        error = Error::BAD_LAYER;
+    }
+
+    // clean up on errors
+    if (error != Error::NONE) {
+        if (!fromCache) {
+            if (outReplacedHandle->isBuffer()) {
+                mImporter.freeBuffer(importedHandle);
+            } else {
+                mImporter.freeStream(importedHandle);
+            }
+        }
+        return error;
+    }
+
+    outReplacedHandle->reset(&mImporter, replacedHandle);
+
+    return Error::NONE;
+}
+
+}  // namespace hal
+}  // namespace V2_1
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.1/utils/resources/include/composer-resources/2.1/ComposerResources.h b/graphics/composer/2.1/utils/resources/include/composer-resources/2.1/ComposerResources.h
new file mode 100644
index 0000000..3738278
--- /dev/null
+++ b/graphics/composer/2.1/utils/resources/include/composer-resources/2.1/ComposerResources.h
@@ -0,0 +1,260 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#ifndef LOG_TAG
+#warning "ComposerResources.h included without LOG_TAG"
+#endif
+
+#include <memory>
+#include <mutex>
+#include <unordered_map>
+#include <vector>
+
+#include <android/hardware/graphics/composer/2.1/types.h>
+
+#include <android/hardware/graphics/mapper/2.0/IMapper.h>
+#include <android/hardware/graphics/mapper/3.0/IMapper.h>
+#include <android/hardware/graphics/mapper/4.0/IMapper.h>
+#include <log/log.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_1 {
+namespace hal {
+
+// wrapper for IMapper to import buffers and sideband streams
+class ComposerHandleImporter {
+  public:
+    bool init();
+
+    Error importBuffer(const native_handle_t* rawHandle, const native_handle_t** outBufferHandle);
+    void freeBuffer(const native_handle_t* bufferHandle);
+    Error importStream(const native_handle_t* rawHandle, const native_handle_t** outStreamHandle);
+    void freeStream(const native_handle_t* streamHandle);
+
+  private:
+    sp<mapper::V2_0::IMapper> mMapper2;
+    sp<mapper::V3_0::IMapper> mMapper3;
+    sp<mapper::V4_0::IMapper> mMapper4;
+};
+
+class ComposerHandleCache {
+  public:
+    enum class HandleType {
+        INVALID,
+        BUFFER,
+        STREAM,
+    };
+
+    ComposerHandleCache(ComposerHandleImporter& importer, HandleType type, uint32_t cacheSize);
+
+    // must be initialized later with initCache
+    ComposerHandleCache(ComposerHandleImporter& importer);
+
+    ~ComposerHandleCache();
+
+    ComposerHandleCache(const ComposerHandleCache&) = delete;
+    ComposerHandleCache& operator=(const ComposerHandleCache&) = delete;
+
+    bool initCache(HandleType type, uint32_t cacheSize);
+    Error lookupCache(uint32_t slot, const native_handle_t** outHandle);
+    Error updateCache(uint32_t slot, const native_handle_t* handle,
+                      const native_handle** outReplacedHandle);
+
+    // when fromCache is true, look up in the cache; otherwise, update the cache
+    Error getHandle(uint32_t slot, bool fromCache, const native_handle_t* inHandle,
+                    const native_handle_t** outHandle, const native_handle** outReplacedHandle);
+
+  private:
+    ComposerHandleImporter& mImporter;
+    HandleType mHandleType = HandleType::INVALID;
+    std::vector<const native_handle_t*> mHandles;
+};
+
+// layer resource
+class ComposerLayerResource {
+  public:
+    ComposerLayerResource(ComposerHandleImporter& importer, uint32_t bufferCacheSize);
+
+    virtual ~ComposerLayerResource() = default;
+
+    Error getBuffer(uint32_t slot, bool fromCache, const native_handle_t* inHandle,
+                    const native_handle_t** outHandle, const native_handle** outReplacedHandle);
+    Error getSidebandStream(uint32_t slot, bool fromCache, const native_handle_t* inHandle,
+                            const native_handle_t** outHandle,
+                            const native_handle** outReplacedHandle);
+
+  protected:
+    ComposerHandleCache mBufferCache;
+    ComposerHandleCache mSidebandStreamCache;
+};
+
+// display resource
+class ComposerDisplayResource {
+  public:
+    enum class DisplayType {
+        PHYSICAL,
+        VIRTUAL,
+    };
+
+    virtual ~ComposerDisplayResource() = default;
+
+    ComposerDisplayResource(DisplayType type, ComposerHandleImporter& importer,
+                            uint32_t outputBufferCacheSize);
+
+    bool initClientTargetCache(uint32_t cacheSize);
+
+    bool isVirtual() const;
+
+    Error getClientTarget(uint32_t slot, bool fromCache, const native_handle_t* inHandle,
+                          const native_handle_t** outHandle,
+                          const native_handle** outReplacedHandle);
+
+    Error getOutputBuffer(uint32_t slot, bool fromCache, const native_handle_t* inHandle,
+                          const native_handle_t** outHandle,
+                          const native_handle** outReplacedHandle);
+
+    bool addLayer(Layer layer, std::unique_ptr<ComposerLayerResource> layerResource);
+    bool removeLayer(Layer layer);
+    ComposerLayerResource* findLayerResource(Layer layer);
+    std::vector<Layer> getLayers() const;
+
+    void setMustValidateState(bool mustValidate);
+
+    bool mustValidate() const;
+
+  protected:
+    const DisplayType mType;
+    ComposerHandleCache mClientTargetCache;
+    ComposerHandleCache mOutputBufferCache;
+    bool mMustValidate;
+
+    std::unordered_map<Layer, std::unique_ptr<ComposerLayerResource>> mLayerResources;
+};
+
+class ComposerResources {
+  public:
+    static std::unique_ptr<ComposerResources> create();
+
+    ComposerResources() = default;
+    virtual ~ComposerResources() = default;
+
+    bool init();
+
+    using RemoveDisplay =
+            std::function<void(Display display, bool isVirtual, const std::vector<Layer>& layers)>;
+    void clear(RemoveDisplay removeDisplay);
+
+    Error addPhysicalDisplay(Display display);
+    Error addVirtualDisplay(Display display, uint32_t outputBufferCacheSize);
+
+    Error removeDisplay(Display display);
+
+    Error setDisplayClientTargetCacheSize(Display display, uint32_t clientTargetCacheSize);
+
+    Error addLayer(Display display, Layer layer, uint32_t bufferCacheSize);
+    Error removeLayer(Display display, Layer layer);
+
+    void setDisplayMustValidateState(Display display, bool mustValidate);
+
+    bool mustValidateDisplay(Display display);
+
+    // When a buffer in the cache is replaced by a new one, we must keep it
+    // alive until it has been replaced in ComposerHal.
+    class ReplacedHandle {
+      public:
+        explicit ReplacedHandle(bool isBuffer) : mIsBuffer(isBuffer) {}
+        ReplacedHandle(const ReplacedHandle&) = delete;
+        ReplacedHandle& operator=(const ReplacedHandle&) = delete;
+
+        ~ReplacedHandle() { reset(); }
+
+        bool isBuffer() { return mIsBuffer; }
+
+        void reset(ComposerHandleImporter* importer = nullptr,
+                   const native_handle_t* handle = nullptr) {
+            if (mHandle) {
+                if (mIsBuffer) {
+                    mImporter->freeBuffer(mHandle);
+                } else {
+                    mImporter->freeStream(mHandle);
+                }
+            }
+
+            mImporter = importer;
+            mHandle = handle;
+        }
+
+      private:
+        bool mIsBuffer;
+        ComposerHandleImporter* mImporter = nullptr;
+        const native_handle_t* mHandle = nullptr;
+    };
+
+    Error getDisplayClientTarget(Display display, uint32_t slot, bool fromCache,
+                                 const native_handle_t* rawHandle,
+                                 const native_handle_t** outBufferHandle,
+                                 ReplacedHandle* outReplacedBuffer);
+
+    Error getDisplayOutputBuffer(Display display, uint32_t slot, bool fromCache,
+                                 const native_handle_t* rawHandle,
+                                 const native_handle_t** outBufferHandle,
+                                 ReplacedHandle* outReplacedBuffer);
+
+    Error getLayerBuffer(Display display, Layer layer, uint32_t slot, bool fromCache,
+                         const native_handle_t* rawHandle, const native_handle_t** outBufferHandle,
+                         ReplacedHandle* outReplacedBuffer);
+
+    Error getLayerSidebandStream(Display display, Layer layer, const native_handle_t* rawHandle,
+                                 const native_handle_t** outStreamHandle,
+                                 ReplacedHandle* outReplacedStream);
+
+  protected:
+    virtual std::unique_ptr<ComposerDisplayResource> createDisplayResource(
+            ComposerDisplayResource::DisplayType type, uint32_t outputBufferCacheSize);
+
+    virtual std::unique_ptr<ComposerLayerResource> createLayerResource(uint32_t bufferCacheSize);
+
+    ComposerDisplayResource* findDisplayResourceLocked(Display display);
+
+    ComposerHandleImporter mImporter;
+
+    std::mutex mDisplayResourcesMutex;
+    std::unordered_map<Display, std::unique_ptr<ComposerDisplayResource>> mDisplayResources;
+
+  private:
+    enum class Cache {
+        CLIENT_TARGET,
+        OUTPUT_BUFFER,
+        LAYER_BUFFER,
+        LAYER_SIDEBAND_STREAM,
+    };
+
+    Error getHandle(Display display, Layer layer, uint32_t slot, Cache cache, bool fromCache,
+                    const native_handle_t* rawHandle, const native_handle_t** outHandle,
+                    ReplacedHandle* outReplacedHandle);
+};
+
+}  // namespace hal
+}  // namespace V2_1
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.1/utils/vts/Android.bp b/graphics/composer/2.1/utils/vts/Android.bp
index fcb327f..cdc0f35 100644
--- a/graphics/composer/2.1/utils/vts/Android.bp
+++ b/graphics/composer/2.1/utils/vts/Android.bp
@@ -27,10 +27,21 @@
         "android.hardware.graphics.composer@2.1",
         "android.hardware.graphics.mapper@2.0-vts",
         "android.hardware.graphics.mapper@3.0-vts",
+        "android.hardware.graphics.mapper@4.0-vts",
+    ],
+    export_static_lib_headers: [
+        "VtsHalHidlTargetTestBase",
+        "android.hardware.graphics.composer@2.1",
+        "android.hardware.graphics.mapper@2.0-vts",
+        "android.hardware.graphics.mapper@3.0-vts",
+        "android.hardware.graphics.mapper@4.0-vts",
     ],
     header_libs: [
         "android.hardware.graphics.composer@2.1-command-buffer",
     ],
+    export_header_lib_headers: [
+        "android.hardware.graphics.composer@2.1-command-buffer",
+    ],
     cflags: [
         "-O0",
         "-g",
diff --git a/graphics/composer/2.1/utils/vts/ComposerVts.cpp b/graphics/composer/2.1/utils/vts/ComposerVts.cpp
index c5d5823..a8e1480 100644
--- a/graphics/composer/2.1/utils/vts/ComposerVts.cpp
+++ b/graphics/composer/2.1/utils/vts/ComposerVts.cpp
@@ -317,11 +317,16 @@
 
 Gralloc::Gralloc() {
     [this] {
-        ASSERT_NO_FATAL_FAILURE(mGralloc3 = std::make_shared<Gralloc3>("default", "default",
+        ASSERT_NO_FATAL_FAILURE(mGralloc4 = std::make_shared<Gralloc4>("default", "default",
                                                                        /*errOnFailure=*/false));
-        if (mGralloc3->getAllocator() == nullptr || mGralloc3->getMapper() == nullptr) {
-            mGralloc3 = nullptr;
-            ASSERT_NO_FATAL_FAILURE(mGralloc2 = std::make_shared<Gralloc2>());
+        if (mGralloc4->getAllocator() == nullptr || mGralloc4->getMapper() == nullptr) {
+            mGralloc4 = nullptr;
+            ASSERT_NO_FATAL_FAILURE(mGralloc3 = std::make_shared<Gralloc3>("default", "default",
+                                                                           /*errOnFailure=*/false));
+            if (mGralloc3->getAllocator() == nullptr || mGralloc3->getMapper() == nullptr) {
+                mGralloc3 = nullptr;
+                ASSERT_NO_FATAL_FAILURE(mGralloc2 = std::make_shared<Gralloc2>());
+            }
         }
     }();
 }
@@ -329,7 +334,15 @@
 const native_handle_t* Gralloc::allocate(uint32_t width, uint32_t height, uint32_t layerCount,
                                          PixelFormat format, uint64_t usage, bool import,
                                          uint32_t* outStride) {
-    if (mGralloc3) {
+    if (mGralloc4) {
+        IMapper4::BufferDescriptorInfo info{};
+        info.width = width;
+        info.height = height;
+        info.layerCount = layerCount;
+        info.format = static_cast<android::hardware::graphics::common::V1_2::PixelFormat>(format);
+        info.usage = usage;
+        return mGralloc4->allocate(info, import, outStride);
+    } else if (mGralloc3) {
         IMapper3::BufferDescriptorInfo info{};
         info.width = width;
         info.height = height;
@@ -350,7 +363,14 @@
 
 void* Gralloc::lock(const native_handle_t* bufferHandle, uint64_t cpuUsage,
                     const AccessRegion& accessRegionRect, int acquireFence) {
-    if (mGralloc3) {
+    if (mGralloc4) {
+        IMapper4::Rect accessRegion;
+        accessRegion.left = accessRegionRect.left;
+        accessRegion.top = accessRegionRect.top;
+        accessRegion.width = accessRegionRect.width;
+        accessRegion.height = accessRegionRect.height;
+        return mGralloc4->lock(bufferHandle, cpuUsage, accessRegion, acquireFence);
+    } else if (mGralloc3) {
         IMapper3::Rect accessRegion;
         accessRegion.left = accessRegionRect.left;
         accessRegion.top = accessRegionRect.top;
@@ -371,7 +391,9 @@
 }
 
 int Gralloc::unlock(const native_handle_t* bufferHandle) {
-    if (mGralloc3) {
+    if (mGralloc4) {
+        return mGralloc4->unlock(bufferHandle);
+    } else if (mGralloc3) {
         return mGralloc3->unlock(bufferHandle);
     } else {
         return mGralloc2->unlock(bufferHandle);
@@ -379,7 +401,9 @@
 }
 
 void Gralloc::freeBuffer(const native_handle_t* bufferHandle) {
-    if (mGralloc3) {
+    if (mGralloc4) {
+        mGralloc4->freeBuffer(bufferHandle);
+    } else if (mGralloc3) {
         mGralloc3->freeBuffer(bufferHandle);
     } else {
         mGralloc2->freeBuffer(bufferHandle);
diff --git a/graphics/composer/2.1/utils/vts/include/composer-vts/2.1/ComposerVts.h b/graphics/composer/2.1/utils/vts/include/composer-vts/2.1/ComposerVts.h
index 7811048..63aa713 100644
--- a/graphics/composer/2.1/utils/vts/include/composer-vts/2.1/ComposerVts.h
+++ b/graphics/composer/2.1/utils/vts/include/composer-vts/2.1/ComposerVts.h
@@ -27,6 +27,7 @@
 #include <composer-vts/2.1/TestCommandReader.h>
 #include <mapper-vts/2.0/MapperVts.h>
 #include <mapper-vts/3.0/MapperVts.h>
+#include <mapper-vts/4.0/MapperVts.h>
 #include <utils/StrongPointer.h>
 
 #include "gtest/gtest.h"
@@ -44,8 +45,10 @@
 using android::hardware::graphics::common::V1_0::PixelFormat;
 using IMapper2 = android::hardware::graphics::mapper::V2_0::IMapper;
 using IMapper3 = android::hardware::graphics::mapper::V3_0::IMapper;
+using IMapper4 = android::hardware::graphics::mapper::V4_0::IMapper;
 using Gralloc2 = android::hardware::graphics::mapper::V2_0::vts::Gralloc;
 using Gralloc3 = android::hardware::graphics::mapper::V3_0::vts::Gralloc;
+using Gralloc4 = android::hardware::graphics::mapper::V4_0::vts::Gralloc;
 
 class ComposerClient;
 
@@ -54,6 +57,7 @@
    public:
     Composer();
     explicit Composer(const std::string& name);
+    explicit Composer(const sp<IComposer>& composer);
 
     sp<IComposer> getRaw() const;
 
@@ -64,9 +68,6 @@
     std::string dumpDebugInfo();
     std::unique_ptr<ComposerClient> createClient();
 
-   protected:
-    explicit Composer(const sp<IComposer>& composer);
-
    private:
     const sp<IComposer> mComposer;
 
@@ -153,6 +154,7 @@
   protected:
     std::shared_ptr<Gralloc2> mGralloc2 = nullptr;
     std::shared_ptr<Gralloc3> mGralloc3 = nullptr;
+    std::shared_ptr<Gralloc4> mGralloc4 = nullptr;
 };
 
 }  // namespace vts
diff --git a/graphics/composer/2.1/vts/functional/Android.bp b/graphics/composer/2.1/vts/functional/Android.bp
index d54da60..5f1ed63 100644
--- a/graphics/composer/2.1/vts/functional/Android.bp
+++ b/graphics/composer/2.1/vts/functional/Android.bp
@@ -27,15 +27,21 @@
     static_libs: [
         "android.hardware.graphics.allocator@2.0",
         "android.hardware.graphics.allocator@3.0",
+        "android.hardware.graphics.allocator@4.0",
         "android.hardware.graphics.composer@2.1",
         "android.hardware.graphics.composer@2.1-vts",
         "android.hardware.graphics.mapper@2.0",
         "android.hardware.graphics.mapper@2.0-vts",
+        "android.hardware.graphics.mapper@2.1",
+        "android.hardware.graphics.mapper@2.1-vts",
         "android.hardware.graphics.mapper@3.0",
         "android.hardware.graphics.mapper@3.0-vts",
+        "android.hardware.graphics.mapper@4.0",
+        "android.hardware.graphics.mapper@4.0-vts",
     ],
     header_libs: [
         "android.hardware.graphics.composer@2.1-command-buffer",
     ],
-    test_suites: ["general-tests"],
+    disable_framework: true,
+    test_suites: ["general-tests", "vts-core"],
 }
diff --git a/graphics/composer/2.1/vts/functional/VtsHalGraphicsComposerV2_1TargetTest.cpp b/graphics/composer/2.1/vts/functional/VtsHalGraphicsComposerV2_1TargetTest.cpp
index fa5ace6..b92279d 100644
--- a/graphics/composer/2.1/vts/functional/VtsHalGraphicsComposerV2_1TargetTest.cpp
+++ b/graphics/composer/2.1/vts/functional/VtsHalGraphicsComposerV2_1TargetTest.cpp
@@ -20,11 +20,14 @@
 #include <composer-vts/2.1/ComposerVts.h>
 #include <composer-vts/2.1/GraphicsComposerCallback.h>
 #include <composer-vts/2.1/TestCommandReader.h>
+#include <gtest/gtest.h>
+#include <hardware/hwcomposer2.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 #include <mapper-vts/2.0/MapperVts.h>
 #include <mapper-vts/3.0/MapperVts.h>
+#include <mapper-vts/4.0/MapperVts.h>
 
-#include <VtsHalHidlTargetTestBase.h>
-#include <VtsHalHidlTargetTestEnvBase.h>
 #include <unistd.h>
 
 #include <algorithm>
@@ -50,30 +53,11 @@
 using android::hardware::graphics::common::V1_0::Transform;
 using GrallocError = android::hardware::graphics::mapper::V2_0::Error;
 
-// Test environment for graphics.composer
-class GraphicsComposerHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
-   public:
-    // get the test environment singleton
-    static GraphicsComposerHidlEnvironment* Instance() {
-        static GraphicsComposerHidlEnvironment* instance = new GraphicsComposerHidlEnvironment;
-        return instance;
-    }
-
-    virtual void registerTestServices() override { registerTestService<IComposer>(); }
-
-   private:
-    GraphicsComposerHidlEnvironment() {}
-
-    GTEST_DISALLOW_COPY_AND_ASSIGN_(GraphicsComposerHidlEnvironment);
-};
-
-class GraphicsComposerHidlTest : public ::testing::VtsHalHidlTargetTestBase {
-   protected:
+class GraphicsComposerHidlTest : public ::testing::TestWithParam<std::string> {
+  protected:
     void SetUp() override {
-        VtsHalHidlTargetTestBase::SetUp();
         ASSERT_NO_FATAL_FAILURE(
-            mComposer = std::make_unique<Composer>(
-                GraphicsComposerHidlEnvironment::Instance()->getServiceName<IComposer>()));
+                mComposer = std::make_unique<Composer>(IComposer::getService(GetParam())));
         ASSERT_NO_FATAL_FAILURE(mComposerClient = mComposer->createClient());
 
         mComposerCallback = new GraphicsComposerCallback;
@@ -100,7 +84,6 @@
             EXPECT_EQ(0, mComposerCallback->getInvalidRefreshCount());
             EXPECT_EQ(0, mComposerCallback->getInvalidVsyncCount());
         }
-        VtsHalHidlTargetTestBase::TearDown();
     }
 
     // returns an invalid display id (one that has not been registered to a
@@ -149,7 +132,7 @@
  *
  * Test that IComposer::getCapabilities returns no invalid capabilities.
  */
-TEST_F(GraphicsComposerHidlTest, GetCapabilities) {
+TEST_P(GraphicsComposerHidlTest, GetCapabilities) {
     auto capabilities = mComposer->getCapabilities();
     ASSERT_EQ(capabilities.end(),
               std::find(capabilities.begin(), capabilities.end(), IComposer::Capability::INVALID));
@@ -158,7 +141,7 @@
 /**
  * Test IComposer::dumpDebugInfo.
  */
-TEST_F(GraphicsComposerHidlTest, DumpDebugInfo) {
+TEST_P(GraphicsComposerHidlTest, DumpDebugInfo) {
     mComposer->dumpDebugInfo();
 }
 
@@ -167,7 +150,7 @@
  *
  * Test that IComposerClient is a singleton.
  */
-TEST_F(GraphicsComposerHidlTest, CreateClientSingleton) {
+TEST_P(GraphicsComposerHidlTest, CreateClientSingleton) {
     mComposer->getRaw()->createClient(
         [&](const auto& tmpError, const auto&) { EXPECT_EQ(Error::NO_RESOURCES, tmpError); });
 }
@@ -178,7 +161,7 @@
  *
  * Test that virtual displays can be created and has the correct display type.
  */
-TEST_F(GraphicsComposerHidlTest, CreateVirtualDisplay) {
+TEST_P(GraphicsComposerHidlTest, CreateVirtualDisplay) {
     if (mComposerClient->getMaxVirtualDisplayCount() == 0) {
         GTEST_SUCCEED() << "no virtual display support";
         return;
@@ -203,7 +186,7 @@
  * Test that passing a bad display handle to destroyVirtualDisplay
  * returns a BAD_DISPLAY error
  */
-TEST_F(GraphicsComposerHidlTest, DestroyVirtualDisplayBadDisplay) {
+TEST_P(GraphicsComposerHidlTest, DestroyVirtualDisplayBadDisplay) {
     if (mComposerClient->getMaxVirtualDisplayCount() == 0) {
         GTEST_SUCCEED() << "no virtual display support";
         return;
@@ -218,7 +201,7 @@
  *
  * Test that layers can be created and destroyed.
  */
-TEST_F(GraphicsComposerHidlTest, CreateLayer) {
+TEST_P(GraphicsComposerHidlTest, CreateLayer) {
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -232,7 +215,7 @@
  * Test that passing in an invalid display handle to createLayer returns
  * BAD_DISPLAY.
  */
-TEST_F(GraphicsComposerHidlTest, CreateLayerBadDisplay) {
+TEST_P(GraphicsComposerHidlTest, CreateLayerBadDisplay) {
     Error error;
     mComposerClient->getRaw()->createLayer(
         mInvalidDisplayId, kBufferSlotCount,
@@ -246,7 +229,7 @@
  * Test that passing in an invalid display handle to destroyLayer returns
  * BAD_DISPLAY
  */
-TEST_F(GraphicsComposerHidlTest, DestroyLayerBadDisplay) {
+TEST_P(GraphicsComposerHidlTest, DestroyLayerBadDisplay) {
     Error error;
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
@@ -265,7 +248,7 @@
  * Test that passing in an invalid layer handle to destroyLayer returns
  * BAD_LAYER
  */
-TEST_F(GraphicsComposerHidlTest, DestroyLayerBadLayerError) {
+TEST_P(GraphicsComposerHidlTest, DestroyLayerBadLayerError) {
     // We haven't created any layers yet, so any id should be invalid
     Error error = mComposerClient->getRaw()->destroyLayer(mPrimaryDisplay, 1);
 
@@ -278,7 +261,7 @@
  * Test that passing in a bad display handle to getActiveConfig generates a
  * BAD_DISPLAY error
  */
-TEST_F(GraphicsComposerHidlTest, GetActiveConfigBadDisplay) {
+TEST_P(GraphicsComposerHidlTest, GetActiveConfigBadDisplay) {
     Error error;
     mComposerClient->getRaw()->getActiveConfig(
         mInvalidDisplayId, [&](const auto& tmpOutError, const auto&) { error = tmpOutError; });
@@ -291,7 +274,7 @@
  * Test IComposerClient::getDisplayConfigs returns no error
  * when passed in a valid display
  */
-TEST_F(GraphicsComposerHidlTest, GetDisplayConfig) {
+TEST_P(GraphicsComposerHidlTest, GetDisplayConfig) {
     std::vector<Config> configs;
     ASSERT_NO_FATAL_FAILURE(configs = mComposerClient->getDisplayConfigs(mPrimaryDisplay));
 }
@@ -302,7 +285,7 @@
  * Test IComposerClient::getDisplayConfigs returns BAD_DISPLAY
  * when passed in an invalid display handle
  */
-TEST_F(GraphicsComposerHidlTest, GetDisplayConfigBadDisplay) {
+TEST_P(GraphicsComposerHidlTest, GetDisplayConfigBadDisplay) {
     Error error;
     mComposerClient->getRaw()->getDisplayConfigs(
         mInvalidDisplayId, [&](const auto& tmpOutError, const auto&) { error = tmpOutError; });
@@ -312,7 +295,7 @@
 /**
  * Test IComposerClient::getDisplayName.
  */
-TEST_F(GraphicsComposerHidlTest, GetDisplayName) {
+TEST_P(GraphicsComposerHidlTest, GetDisplayName) {
     mComposerClient->getDisplayName(mPrimaryDisplay);
 }
 
@@ -322,7 +305,7 @@
  * Test that IComposerClient::getDisplayType returns the correct display type
  * for the primary display.
  */
-TEST_F(GraphicsComposerHidlTest, GetDisplayType) {
+TEST_P(GraphicsComposerHidlTest, GetDisplayType) {
     ASSERT_EQ(IComposerClient::DisplayType::PHYSICAL,
               mComposerClient->getDisplayType(mPrimaryDisplay));
 }
@@ -333,7 +316,7 @@
  * Test that IComposerClient::getClientTargetSupport returns true for the
  * required client targets.
  */
-TEST_F(GraphicsComposerHidlTest, GetClientTargetSupport) {
+TEST_P(GraphicsComposerHidlTest, GetClientTargetSupport) {
     std::vector<Config> configs = mComposerClient->getDisplayConfigs(mPrimaryDisplay);
     for (auto config : configs) {
         int32_t width = mComposerClient->getDisplayAttribute(mPrimaryDisplay, config,
@@ -356,7 +339,7 @@
  * Test that IComposerClient::getClientTargetSupport returns BAD_DISPLAY when
  * passed an invalid display handle
  */
-TEST_F(GraphicsComposerHidlTest, GetClientTargetSupportBadDisplay) {
+TEST_P(GraphicsComposerHidlTest, GetClientTargetSupportBadDisplay) {
     std::vector<Config> configs = mComposerClient->getDisplayConfigs(mPrimaryDisplay);
     for (auto config : configs) {
         int32_t width = mComposerClient->getDisplayAttribute(mPrimaryDisplay, config,
@@ -380,7 +363,7 @@
  * Test that IComposerClient::getDisplayAttribute succeeds for the required
  * formats, and succeeds or fails correctly for optional attributes.
  */
-TEST_F(GraphicsComposerHidlTest, GetDisplayAttribute) {
+TEST_P(GraphicsComposerHidlTest, GetDisplayAttribute) {
     std::vector<Config> configs = mComposerClient->getDisplayConfigs(mPrimaryDisplay);
     for (auto config : configs) {
         const std::array<IComposerClient::Attribute, 3> requiredAttributes = {{
@@ -406,7 +389,7 @@
 /**
  * Test IComposerClient::getHdrCapabilities.
  */
-TEST_F(GraphicsComposerHidlTest, GetHdrCapabilities) {
+TEST_P(GraphicsComposerHidlTest, GetHdrCapabilities) {
     float maxLuminance;
     float maxAverageLuminance;
     float minLuminance;
@@ -417,7 +400,7 @@
 /**
  * Test IComposerClient::setClientTargetSlotCount.
  */
-TEST_F(GraphicsComposerHidlTest, SetClientTargetSlotCount) {
+TEST_P(GraphicsComposerHidlTest, SetClientTargetSlotCount) {
     mComposerClient->setClientTargetSlotCount(mPrimaryDisplay, kBufferSlotCount);
 }
 
@@ -427,7 +410,7 @@
  * Test that IComposerClient::setActiveConfig succeeds for all display
  * configs.
  */
-TEST_F(GraphicsComposerHidlTest, SetActiveConfig) {
+TEST_P(GraphicsComposerHidlTest, SetActiveConfig) {
     std::vector<Config> configs = mComposerClient->getDisplayConfigs(mPrimaryDisplay);
     for (auto config : configs) {
         mComposerClient->setActiveConfig(mPrimaryDisplay, config);
@@ -441,7 +424,7 @@
  * Test that config set during IComposerClient::setActiveConfig is maintained
  * during a display on/off power cycle
  */
-TEST_F(GraphicsComposerHidlTest, SetActiveConfigPowerCycle) {
+TEST_P(GraphicsComposerHidlTest, SetActiveConfigPowerCycle) {
     ASSERT_NO_FATAL_FAILURE(
         mComposerClient->setPowerMode(mPrimaryDisplay, IComposerClient::PowerMode::OFF));
     ASSERT_NO_FATAL_FAILURE(
@@ -465,7 +448,7 @@
  *
  * Test that IComposerClient::getColorMode always returns ColorMode::NATIVE
  */
-TEST_F(GraphicsComposerHidlTest, GetColorModes) {
+TEST_P(GraphicsComposerHidlTest, GetColorModes) {
     std::vector<ColorMode> modes = mComposerClient->getColorModes(mPrimaryDisplay);
     auto nativeModeLocation = std::find(modes.begin(), modes.end(), ColorMode::NATIVE);
 
@@ -477,7 +460,7 @@
  *
  * Test that IComposerClient::setColorMode succeeds for all color modes.
  */
-TEST_F(GraphicsComposerHidlTest, SetColorMode) {
+TEST_P(GraphicsComposerHidlTest, SetColorMode) {
     std::unordered_set<ColorMode> validModes;
     for (auto mode : hidl_enum_range<ColorMode>()) {
         validModes.insert(mode);
@@ -497,7 +480,7 @@
  * Test that IComposerClient::setColorMode returns BAD_DISPLAY for
  * an invalid display handle
  */
-TEST_F(GraphicsComposerHidlTest, SetColorModeBadDisplay) {
+TEST_P(GraphicsComposerHidlTest, SetColorModeBadDisplay) {
     std::vector<ColorMode> modes = mComposerClient->getColorModes(mPrimaryDisplay);
     for (auto mode : modes) {
         Error error = mComposerClient->getRaw()->setColorMode(mInvalidDisplayId, mode);
@@ -511,7 +494,7 @@
  * Test that IComposerClient::setColorMode returns BAD_PARAMETER when passed in
  * an invalid color mode
  */
-TEST_F(GraphicsComposerHidlTest, SetColorModeBadParameter) {
+TEST_P(GraphicsComposerHidlTest, SetColorModeBadParameter) {
     Error error =
         mComposerClient->getRaw()->setColorMode(mPrimaryDisplay, static_cast<ColorMode>(-1));
     ASSERT_EQ(Error::BAD_PARAMETER, error);
@@ -523,7 +506,7 @@
  * Test that IComposerClient::getDozeSupport returns
  * BAD_DISPLAY when passed an invalid display handle
  */
-TEST_F(GraphicsComposerHidlTest, GetDozeSupportBadDisplay) {
+TEST_P(GraphicsComposerHidlTest, GetDozeSupportBadDisplay) {
     Error error;
     mComposerClient->getRaw()->getDozeSupport(
         mInvalidDisplayId, [&](const auto& tmpOutError, const auto&) { error = tmpOutError; });
@@ -535,7 +518,7 @@
  *
  * Test that IComposerClient::setPowerMode succeeds for all power modes.
  */
-TEST_F(GraphicsComposerHidlTest, SetPowerMode) {
+TEST_P(GraphicsComposerHidlTest, SetPowerMode) {
     std::vector<IComposerClient::PowerMode> modes;
     modes.push_back(IComposerClient::PowerMode::OFF);
 
@@ -558,7 +541,7 @@
  * Test IComposerClient::setPowerMode succeeds with different
  * orderings of power modes
  */
-TEST_F(GraphicsComposerHidlTest, SetPowerModeVariations) {
+TEST_P(GraphicsComposerHidlTest, SetPowerModeVariations) {
     std::vector<IComposerClient::PowerMode> modes;
     modes.push_back(IComposerClient::PowerMode::OFF);
     modes.push_back(IComposerClient::PowerMode::ON);
@@ -609,7 +592,7 @@
  * Test IComposerClient::setPowerMode returns BAD_DISPLAY when passed an invalid
  * display handle
  */
-TEST_F(GraphicsComposerHidlTest, SetPowerModeBadDisplay) {
+TEST_P(GraphicsComposerHidlTest, SetPowerModeBadDisplay) {
     Error error =
         mComposerClient->getRaw()->setPowerMode(mInvalidDisplayId, IComposerClient::PowerMode::ON);
     ASSERT_EQ(Error::BAD_DISPLAY, error);
@@ -621,7 +604,7 @@
  * Test that IComposerClient::setPowerMode returns UNSUPPORTED when passed DOZE
  * or DOZE_SUSPEND on devices that do not support DOZE/DOZE_SUSPEND
  */
-TEST_F(GraphicsComposerHidlTest, SetPowerModeUnsupported) {
+TEST_P(GraphicsComposerHidlTest, SetPowerModeUnsupported) {
     if (!mComposerClient->getDozeSupport(mPrimaryDisplay)) {
         Error error = mComposerClient->getRaw()->setPowerMode(mPrimaryDisplay,
                                                               IComposerClient::PowerMode::DOZE);
@@ -639,7 +622,7 @@
  * Tests that IComposerClient::setPowerMode returns BAD_PARAMETER when passed an invalid
  * PowerMode
  */
-TEST_F(GraphicsComposerHidlTest, SetPowerModeBadParameter) {
+TEST_P(GraphicsComposerHidlTest, SetPowerModeBadParameter) {
     Error error = mComposerClient->getRaw()->setPowerMode(
         mPrimaryDisplay, static_cast<IComposerClient::PowerMode>(-1));
     ASSERT_EQ(Error::BAD_PARAMETER, error);
@@ -651,7 +634,7 @@
  * Test that IComposerClient::setVsyncEnabled succeeds and there is no
  * spurious vsync events.
  */
-TEST_F(GraphicsComposerHidlTest, SetVsyncEnabled) {
+TEST_P(GraphicsComposerHidlTest, SetVsyncEnabled) {
     mComposerCallback->setVsyncAllowed(true);
 
     mComposerClient->setVsyncEnabled(mPrimaryDisplay, true);
@@ -703,7 +686,7 @@
 /**
  * Test IComposerClient::Command::SET_COLOR_TRANSFORM.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_COLOR_TRANSFORM) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_COLOR_TRANSFORM) {
     const std::array<float, 16> identity = {{
         1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f,
         1.0f,
@@ -718,7 +701,7 @@
 /**
  * Test IComposerClient::Command::SET_CLIENT_TARGET.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_CLIENT_TARGET) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_CLIENT_TARGET) {
     mComposerClient->setClientTargetSlotCount(mPrimaryDisplay, kBufferSlotCount);
 
     mWriter->selectDisplay(mPrimaryDisplay);
@@ -731,7 +714,7 @@
 /**
  * Test IComposerClient::Command::SET_OUTPUT_BUFFER.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_OUTPUT_BUFFER) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_OUTPUT_BUFFER) {
     if (mComposerClient->getMaxVirtualDisplayCount() == 0) {
         GTEST_SUCCEED() << "no virtual display support";
         return;
@@ -754,7 +737,7 @@
 /**
  * Test IComposerClient::Command::VALIDATE_DISPLAY.
  */
-TEST_F(GraphicsComposerHidlCommandTest, VALIDATE_DISPLAY) {
+TEST_P(GraphicsComposerHidlCommandTest, VALIDATE_DISPLAY) {
     mWriter->selectDisplay(mPrimaryDisplay);
     mWriter->validateDisplay();
     execute();
@@ -763,7 +746,7 @@
 /**
  * Test IComposerClient::Command::ACCEPT_DISPLAY_CHANGES.
  */
-TEST_F(GraphicsComposerHidlCommandTest, ACCEPT_DISPLAY_CHANGES) {
+TEST_P(GraphicsComposerHidlCommandTest, ACCEPT_DISPLAY_CHANGES) {
     mWriter->selectDisplay(mPrimaryDisplay);
     mWriter->validateDisplay();
     mWriter->acceptDisplayChanges();
@@ -773,7 +756,7 @@
 /**
  * Test IComposerClient::Command::PRESENT_DISPLAY.
  */
-TEST_F(GraphicsComposerHidlCommandTest, PRESENT_DISPLAY) {
+TEST_P(GraphicsComposerHidlCommandTest, PRESENT_DISPLAY) {
     mWriter->selectDisplay(mPrimaryDisplay);
     mWriter->validateDisplay();
     mWriter->presentDisplay();
@@ -787,7 +770,13 @@
  * additional call to validateDisplay when only the layer buffer handle and
  * surface damage have been set
  */
-TEST_F(GraphicsComposerHidlCommandTest, PRESENT_DISPLAY_NO_LAYER_STATE_CHANGES) {
+TEST_P(GraphicsComposerHidlCommandTest, PRESENT_DISPLAY_NO_LAYER_STATE_CHANGES) {
+    if (!mComposer->hasCapability(
+                static_cast<IComposer::Capability>(HWC2_CAPABILITY_SKIP_VALIDATE))) {
+        std::cout << "Device does not have skip validate capability, skipping" << std::endl;
+        GTEST_SUCCEED();
+        return;
+    }
     mWriter->selectDisplay(mPrimaryDisplay);
     mComposerClient->setPowerMode(mPrimaryDisplay, IComposerClient::PowerMode::ON);
     mComposerClient->setColorMode(mPrimaryDisplay, ColorMode::NATIVE);
@@ -837,7 +826,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_CURSOR_POSITION.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_CURSOR_POSITION) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_CURSOR_POSITION) {
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -879,7 +868,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_BUFFER.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_BUFFER) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_BUFFER) {
     auto handle = allocate();
     ASSERT_NE(nullptr, handle);
 
@@ -896,7 +885,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_SURFACE_DAMAGE.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_SURFACE_DAMAGE) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_SURFACE_DAMAGE) {
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -915,7 +904,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_BLEND_MODE.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_BLEND_MODE) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_BLEND_MODE) {
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -931,7 +920,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_COLOR.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_COLOR) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_COLOR) {
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -946,7 +935,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_COMPOSITION_TYPE.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_COMPOSITION_TYPE) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_COMPOSITION_TYPE) {
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -963,7 +952,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_DATASPACE.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_DATASPACE) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_DATASPACE) {
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -977,7 +966,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_DISPLAY_FRAME.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_DISPLAY_FRAME) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_DISPLAY_FRAME) {
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -991,7 +980,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_PLANE_ALPHA.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_PLANE_ALPHA) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_PLANE_ALPHA) {
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -1006,7 +995,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_SIDEBAND_STREAM.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_SIDEBAND_STREAM) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_SIDEBAND_STREAM) {
     if (!mComposer->hasCapability(IComposer::Capability::SIDEBAND_STREAM)) {
         GTEST_SUCCEED() << "no sideband stream support";
         return;
@@ -1028,7 +1017,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_SOURCE_CROP.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_SOURCE_CROP) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_SOURCE_CROP) {
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -1042,7 +1031,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_TRANSFORM.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_TRANSFORM) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_TRANSFORM) {
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -1063,7 +1052,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_VISIBLE_REGION.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_VISIBLE_REGION) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_VISIBLE_REGION) {
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -1082,7 +1071,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_Z_ORDER.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_Z_ORDER) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_Z_ORDER) {
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -1094,6 +1083,16 @@
     execute();
 }
 
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, GraphicsComposerHidlCommandTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IComposer::descriptor)),
+        android::hardware::PrintInstanceNameToString);
+
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, GraphicsComposerHidlTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IComposer::descriptor)),
+        android::hardware::PrintInstanceNameToString);
+
 }  // namespace
 }  // namespace vts
 }  // namespace V2_1
@@ -1101,13 +1100,3 @@
 }  // namespace graphics
 }  // namespace hardware
 }  // namespace android
-
-int main(int argc, char** argv) {
-    using android::hardware::graphics::composer::V2_1::vts::GraphicsComposerHidlEnvironment;
-    ::testing::AddGlobalTestEnvironment(GraphicsComposerHidlEnvironment::Instance());
-    ::testing::InitGoogleTest(&argc, argv);
-    GraphicsComposerHidlEnvironment::Instance()->init(&argc, argv);
-    int status = RUN_ALL_TESTS();
-    ALOGI("Test result = %d", status);
-    return status;
-}
diff --git a/graphics/composer/2.2/default/Android.mk b/graphics/composer/2.2/default/Android.mk
index 4916557..156ecb6 100644
--- a/graphics/composer/2.2/default/Android.mk
+++ b/graphics/composer/2.2/default/Android.mk
@@ -11,8 +11,8 @@
 LOCAL_SHARED_LIBRARIES := \
         android.hardware.graphics.composer@2.1 \
         android.hardware.graphics.composer@2.2 \
-        android.hardware.graphics.mapper@2.0 \
-        android.hardware.graphics.mapper@3.0 \
+        android.hardware.graphics.composer@2.1-resources \
+        android.hardware.graphics.composer@2.2-resources \
         libbase \
         libbinder \
         libcutils \
diff --git a/graphics/composer/2.2/utils/OWNERS b/graphics/composer/2.2/utils/OWNERS
index a17a50c..3f1e82c 100644
--- a/graphics/composer/2.2/utils/OWNERS
+++ b/graphics/composer/2.2/utils/OWNERS
@@ -3,7 +3,3 @@
 lpy@google.com
 stoza@google.com
 vhau@google.com
-
-# VTS team
-yim@google.com
-zhuoyao@google.com
diff --git a/graphics/composer/2.2/utils/command-buffer/Android.bp b/graphics/composer/2.2/utils/command-buffer/Android.bp
index efaabd4..c4ceaab 100644
--- a/graphics/composer/2.2/utils/command-buffer/Android.bp
+++ b/graphics/composer/2.2/utils/command-buffer/Android.bp
@@ -3,11 +3,16 @@
     defaults: ["hidl_defaults"],
     vendor_available: true,
     shared_libs: [
-        "android.hardware.graphics.composer@2.1",
+        "android.hardware.graphics.composer@2.2",
+    ],
+    export_shared_lib_headers: [
         "android.hardware.graphics.composer@2.2",
     ],
     header_libs: [
         "android.hardware.graphics.composer@2.1-command-buffer",
     ],
+    export_header_lib_headers: [
+        "android.hardware.graphics.composer@2.1-command-buffer",
+    ],
     export_include_dirs: ["include"],
 }
diff --git a/graphics/composer/2.2/utils/command-buffer/include/composer-command-buffer/2.2/ComposerCommandBuffer.h b/graphics/composer/2.2/utils/command-buffer/include/composer-command-buffer/2.2/ComposerCommandBuffer.h
index 138d700..00f427a 100644
--- a/graphics/composer/2.2/utils/command-buffer/include/composer-command-buffer/2.2/ComposerCommandBuffer.h
+++ b/graphics/composer/2.2/utils/command-buffer/include/composer-command-buffer/2.2/ComposerCommandBuffer.h
@@ -76,15 +76,14 @@
 
     static constexpr uint16_t kSetLayerFloatColorLength = 4;
     void setLayerFloatColor(IComposerClient::FloatColor color) {
-        beginCommand_2_2(IComposerClient::Command::SET_LAYER_FLOAT_COLOR,
-                         kSetLayerFloatColorLength);
+        beginCommand(IComposerClient::Command::SET_LAYER_FLOAT_COLOR, kSetLayerFloatColorLength);
         writeFloatColor(color);
         endCommand();
     }
 
     void setLayerPerFrameMetadata(const hidl_vec<IComposerClient::PerFrameMetadata>& metadataVec) {
-        beginCommand_2_2(IComposerClient::Command::SET_LAYER_PER_FRAME_METADATA,
-                         metadataVec.size() * 2);
+        beginCommand(IComposerClient::Command::SET_LAYER_PER_FRAME_METADATA,
+                     metadataVec.size() * 2);
         for (const auto& metadata : metadataVec) {
             writeSigned(static_cast<int32_t>(metadata.key));
             writeFloat(metadata.value);
@@ -93,11 +92,6 @@
     }
 
    protected:
-    void beginCommand_2_2(IComposerClient::Command command, uint16_t length) {
-        V2_1::CommandWriterBase::beginCommand(
-            static_cast<V2_1::IComposerClient::Command>(static_cast<int32_t>(command)), length);
-    }
-
     void writeFloatColor(const IComposerClient::FloatColor& color) {
         writeFloat(color.r);
         writeFloat(color.g);
diff --git a/graphics/composer/2.2/utils/hal/Android.bp b/graphics/composer/2.2/utils/hal/Android.bp
index 10dcae4..f334a11 100644
--- a/graphics/composer/2.2/utils/hal/Android.bp
+++ b/graphics/composer/2.2/utils/hal/Android.bp
@@ -19,9 +19,11 @@
     vendor_available: true,
     shared_libs: [
         "android.hardware.graphics.composer@2.2",
+        "android.hardware.graphics.composer@2.2-resources",
     ],
     export_shared_lib_headers: [
         "android.hardware.graphics.composer@2.2",
+        "android.hardware.graphics.composer@2.2-resources",
     ],
     header_libs: [
         "android.hardware.graphics.composer@2.2-command-buffer",
diff --git a/graphics/composer/2.2/utils/hal/include/composer-hal/2.2/ComposerClient.h b/graphics/composer/2.2/utils/hal/include/composer-hal/2.2/ComposerClient.h
index c760d0a..512d39d 100644
--- a/graphics/composer/2.2/utils/hal/include/composer-hal/2.2/ComposerClient.h
+++ b/graphics/composer/2.2/utils/hal/include/composer-hal/2.2/ComposerClient.h
@@ -24,7 +24,7 @@
 #include <composer-hal/2.1/ComposerClient.h>
 #include <composer-hal/2.2/ComposerCommandEngine.h>
 #include <composer-hal/2.2/ComposerHal.h>
-#include <composer-hal/2.2/ComposerResources.h>
+#include <composer-resources/2.2/ComposerResources.h>
 
 namespace android {
 namespace hardware {
@@ -89,7 +89,7 @@
 
         auto resources = static_cast<ComposerResources*>(mResources.get());
         const native_handle_t* readbackBuffer;
-        ComposerResources::ReplacedBufferHandle replacedReadbackBuffer;
+        ComposerResources::ReplacedHandle replacedReadbackBuffer(true);
         error = resources->getDisplayReadbackBuffer(display, buffer.getNativeHandle(),
                                                     &readbackBuffer, &replacedReadbackBuffer);
         if (error != Error::NONE) {
diff --git a/graphics/composer/2.2/utils/hal/include/composer-hal/2.2/ComposerCommandEngine.h b/graphics/composer/2.2/utils/hal/include/composer-hal/2.2/ComposerCommandEngine.h
index 97e3a9e..8d70ba2 100644
--- a/graphics/composer/2.2/utils/hal/include/composer-hal/2.2/ComposerCommandEngine.h
+++ b/graphics/composer/2.2/utils/hal/include/composer-hal/2.2/ComposerCommandEngine.h
@@ -23,7 +23,7 @@
 #include <composer-command-buffer/2.2/ComposerCommandBuffer.h>
 #include <composer-hal/2.1/ComposerCommandEngine.h>
 #include <composer-hal/2.2/ComposerHal.h>
-#include <composer-hal/2.2/ComposerResources.h>
+#include <composer-resources/2.2/ComposerResources.h>
 
 namespace android {
 namespace hardware {
@@ -49,6 +49,11 @@
         }
     }
 
+    std::unique_ptr<V2_1::CommandWriterBase> createCommandWriter(
+            size_t writerInitialSize) override {
+        return std::make_unique<CommandWriterBase>(writerInitialSize);
+    }
+
     bool executeSetLayerPerFrameMetadata(uint16_t length) {
         // (key, value) pairs
         if (length % 2 != 0) {
@@ -65,7 +70,7 @@
 
         auto err = mHal->setLayerPerFrameMetadata(mCurrentDisplay, mCurrentLayer, metadata);
         if (err != Error::NONE) {
-            mWriter.setError(getCommandLoc(), err);
+            mWriter->setError(getCommandLoc(), err);
         }
 
         return true;
@@ -78,7 +83,7 @@
 
         auto err = mHal->setLayerFloatColor(mCurrentDisplay, mCurrentLayer, readFloatColor());
         if (err != Error::NONE) {
-            mWriter.setError(getCommandLoc(), err);
+            mWriter->setError(getCommandLoc(), err);
         }
 
         return true;
diff --git a/graphics/composer/2.2/utils/hal/include/composer-hal/2.2/ComposerResources.h b/graphics/composer/2.2/utils/hal/include/composer-hal/2.2/ComposerResources.h
deleted file mode 100644
index 85b6651..0000000
--- a/graphics/composer/2.2/utils/hal/include/composer-hal/2.2/ComposerResources.h
+++ /dev/null
@@ -1,105 +0,0 @@
-/*
- * Copyright 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#ifndef LOG_TAG
-#warning "ComposerResources.h included without LOG_TAG"
-#endif
-
-#include <composer-hal/2.1/ComposerResources.h>
-
-namespace android {
-namespace hardware {
-namespace graphics {
-namespace composer {
-namespace V2_2 {
-namespace hal {
-
-using V2_1::hal::ComposerHandleCache;
-using V2_1::hal::ComposerHandleImporter;
-
-class ComposerDisplayResource : public V2_1::hal::ComposerDisplayResource {
-   public:
-    ComposerDisplayResource(DisplayType type, ComposerHandleImporter& importer,
-                            uint32_t outputBufferCacheSize)
-        : V2_1::hal::ComposerDisplayResource(type, importer, outputBufferCacheSize),
-          mReadbackBufferCache(importer, ComposerHandleCache::HandleType::BUFFER, 1) {}
-
-    Error getReadbackBuffer(const native_handle_t* inHandle, const native_handle_t** outHandle,
-                            const native_handle** outReplacedHandle) {
-        const uint32_t slot = 0;
-        const bool fromCache = false;
-        return mReadbackBufferCache.getHandle(slot, fromCache, inHandle, outHandle,
-                                              outReplacedHandle);
-    }
-
-   protected:
-    ComposerHandleCache mReadbackBufferCache;
-};
-
-class ComposerResources : public V2_1::hal::ComposerResources {
-   public:
-    static std::unique_ptr<ComposerResources> create() {
-        auto resources = std::make_unique<ComposerResources>();
-        return resources->init() ? std::move(resources) : nullptr;
-    }
-
-    Error getDisplayReadbackBuffer(Display display, const native_handle_t* rawHandle,
-                                   const native_handle_t** outHandle,
-                                   ReplacedBufferHandle* outReplacedHandle) {
-        // import buffer
-        const native_handle_t* importedHandle;
-        Error error = mImporter.importBuffer(rawHandle, &importedHandle);
-        if (error != Error::NONE) {
-            return error;
-        }
-
-        std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
-
-        auto iter = mDisplayResources.find(display);
-        if (iter == mDisplayResources.end()) {
-            mImporter.freeBuffer(importedHandle);
-            return Error::BAD_DISPLAY;
-        }
-        ComposerDisplayResource& displayResource =
-            *static_cast<ComposerDisplayResource*>(iter->second.get());
-
-        // update cache
-        const native_handle_t* replacedHandle;
-        error = displayResource.getReadbackBuffer(importedHandle, outHandle, &replacedHandle);
-        if (error != Error::NONE) {
-            mImporter.freeBuffer(importedHandle);
-            return error;
-        }
-
-        outReplacedHandle->reset(&mImporter, replacedHandle);
-        return Error::NONE;
-    }
-
-   protected:
-    std::unique_ptr<V2_1::hal::ComposerDisplayResource> createDisplayResource(
-        ComposerDisplayResource::DisplayType type, uint32_t outputBufferCacheSize) override {
-        return std::make_unique<ComposerDisplayResource>(type, mImporter, outputBufferCacheSize);
-    }
-};
-
-}  // namespace hal
-}  // namespace V2_2
-}  // namespace composer
-}  // namespace graphics
-}  // namespace hardware
-}  // namespace android
diff --git a/graphics/composer/2.2/utils/passthrough/include/composer-passthrough/2.2/HwcHal.h b/graphics/composer/2.2/utils/passthrough/include/composer-passthrough/2.2/HwcHal.h
index 93da0a5..9b3aa90 100644
--- a/graphics/composer/2.2/utils/passthrough/include/composer-passthrough/2.2/HwcHal.h
+++ b/graphics/composer/2.2/utils/passthrough/include/composer-passthrough/2.2/HwcHal.h
@@ -173,6 +173,14 @@
     Error getRenderIntents(Display display, ColorMode mode,
                            std::vector<RenderIntent>* outIntents) override {
         if (!mDispatch.getRenderIntents) {
+            IComposerClient::DisplayType type;
+            if (getDisplayType(display, &type) == Error::BAD_DISPLAY) {
+                return Error::BAD_DISPLAY;
+            }
+            if (mode < ColorMode::NATIVE || mode > ColorMode::DISPLAY_P3) {
+                return Error::BAD_PARAMETER;
+            }
+
             *outIntents = std::vector<RenderIntent>({RenderIntent::COLORIMETRIC});
             return Error::NONE;
         }
@@ -199,6 +207,9 @@
 
     Error setColorMode_2_2(Display display, ColorMode mode, RenderIntent intent) override {
         if (!mDispatch.setColorModeWithRenderIntent) {
+            if (intent < RenderIntent::COLORIMETRIC || intent > RenderIntent::TONE_MAP_ENHANCE) {
+                return Error::BAD_PARAMETER;
+            }
             if (intent != RenderIntent::COLORIMETRIC) {
                 return Error::UNSUPPORTED;
             }
@@ -282,6 +293,7 @@
    private:
     using BaseType2_1 = V2_1::passthrough::detail::HwcHalImpl<Hal>;
     using BaseType2_1::getColorModes;
+    using BaseType2_1::getDisplayType;
     using BaseType2_1::mDevice;
     using BaseType2_1::setColorMode;
     using BaseType2_1::createVirtualDisplay;
diff --git a/graphics/composer/2.2/utils/resources/Android.bp b/graphics/composer/2.2/utils/resources/Android.bp
new file mode 100644
index 0000000..752eb81
--- /dev/null
+++ b/graphics/composer/2.2/utils/resources/Android.bp
@@ -0,0 +1,29 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+cc_library_shared {
+    name: "android.hardware.graphics.composer@2.2-resources",
+    defaults: ["hidl_defaults"],
+    vendor_available: true,
+    shared_libs: [
+        "android.hardware.graphics.composer@2.1-resources",
+        "android.hardware.graphics.composer@2.2",
+    ],
+    export_shared_lib_headers: [
+        "android.hardware.graphics.composer@2.1-resources",
+        "android.hardware.graphics.composer@2.2",
+    ],
+    export_include_dirs: ["include"],
+}
diff --git a/graphics/composer/2.2/utils/resources/ComposerResources.cpp b/graphics/composer/2.2/utils/resources/ComposerResources.cpp
new file mode 100644
index 0000000..a0610a3
--- /dev/null
+++ b/graphics/composer/2.2/utils/resources/ComposerResources.cpp
@@ -0,0 +1,84 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "ComposerResources 2.2"
+
+#include "composer-resources/2.2/ComposerResources.h"
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_2 {
+namespace hal {
+
+using V2_1::Display;
+using V2_1::Error;
+using V2_1::Layer;
+using V2_1::hal::ComposerHandleCache;
+using V2_1::hal::ComposerHandleImporter;
+
+Error ComposerDisplayResource::getReadbackBuffer(const native_handle_t* inHandle,
+                                                 const native_handle_t** outHandle,
+                                                 const native_handle** outReplacedHandle) {
+    const uint32_t slot = 0;
+    const bool fromCache = false;
+    return mReadbackBufferCache.getHandle(slot, fromCache, inHandle, outHandle, outReplacedHandle);
+}
+
+std::unique_ptr<ComposerResources> ComposerResources::create() {
+    auto resources = std::make_unique<ComposerResources>();
+    return resources->init() ? std::move(resources) : nullptr;
+}
+
+Error ComposerResources::getDisplayReadbackBuffer(Display display, const native_handle_t* rawHandle,
+                                                  const native_handle_t** outHandle,
+                                                  ReplacedHandle* outReplacedHandle) {
+    // import buffer
+    const native_handle_t* importedHandle;
+    Error error = mImporter.importBuffer(rawHandle, &importedHandle);
+    if (error != Error::NONE) {
+        return error;
+    }
+
+    std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
+
+    auto iter = mDisplayResources.find(display);
+    if (iter == mDisplayResources.end()) {
+        mImporter.freeBuffer(importedHandle);
+        return Error::BAD_DISPLAY;
+    }
+    ComposerDisplayResource& displayResource =
+            *static_cast<ComposerDisplayResource*>(iter->second.get());
+
+    // update cache
+    const native_handle_t* replacedHandle;
+    error = displayResource.getReadbackBuffer(importedHandle, outHandle, &replacedHandle);
+    if (error != Error::NONE) {
+        mImporter.freeBuffer(importedHandle);
+        return error;
+    }
+
+    outReplacedHandle->reset(&mImporter, replacedHandle);
+    return Error::NONE;
+}
+
+}  // namespace hal
+}  // namespace V2_2
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.2/utils/resources/include/composer-resources/2.2/ComposerResources.h b/graphics/composer/2.2/utils/resources/include/composer-resources/2.2/ComposerResources.h
new file mode 100644
index 0000000..33012e9
--- /dev/null
+++ b/graphics/composer/2.2/utils/resources/include/composer-resources/2.2/ComposerResources.h
@@ -0,0 +1,105 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#ifndef LOG_TAG
+#warning "ComposerResources.h included without LOG_TAG"
+#endif
+
+#include <composer-resources/2.1/ComposerResources.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_2 {
+namespace hal {
+
+using V2_1::hal::ComposerHandleCache;
+using V2_1::hal::ComposerHandleImporter;
+
+class ComposerDisplayResource : public V2_1::hal::ComposerDisplayResource {
+  public:
+    ComposerDisplayResource(DisplayType type, ComposerHandleImporter& importer,
+                            uint32_t outputBufferCacheSize)
+        : V2_1::hal::ComposerDisplayResource(type, importer, outputBufferCacheSize),
+          mReadbackBufferCache(importer, ComposerHandleCache::HandleType::BUFFER, 1) {}
+
+    Error getReadbackBuffer(const native_handle_t* inHandle, const native_handle_t** outHandle,
+                            const native_handle** outReplacedHandle) {
+        const uint32_t slot = 0;
+        const bool fromCache = false;
+        return mReadbackBufferCache.getHandle(slot, fromCache, inHandle, outHandle,
+                                              outReplacedHandle);
+    }
+
+  protected:
+    ComposerHandleCache mReadbackBufferCache;
+};
+
+class ComposerResources : public V2_1::hal::ComposerResources {
+  public:
+    static std::unique_ptr<ComposerResources> create() {
+        auto resources = std::make_unique<ComposerResources>();
+        return resources->init() ? std::move(resources) : nullptr;
+    }
+
+    Error getDisplayReadbackBuffer(Display display, const native_handle_t* rawHandle,
+                                   const native_handle_t** outHandle,
+                                   ReplacedHandle* outReplacedHandle) {
+        // import buffer
+        const native_handle_t* importedHandle;
+        Error error = mImporter.importBuffer(rawHandle, &importedHandle);
+        if (error != Error::NONE) {
+            return error;
+        }
+
+        std::lock_guard<std::mutex> lock(mDisplayResourcesMutex);
+
+        auto iter = mDisplayResources.find(display);
+        if (iter == mDisplayResources.end()) {
+            mImporter.freeBuffer(importedHandle);
+            return Error::BAD_DISPLAY;
+        }
+        ComposerDisplayResource& displayResource =
+                *static_cast<ComposerDisplayResource*>(iter->second.get());
+
+        // update cache
+        const native_handle_t* replacedHandle;
+        error = displayResource.getReadbackBuffer(importedHandle, outHandle, &replacedHandle);
+        if (error != Error::NONE) {
+            mImporter.freeBuffer(importedHandle);
+            return error;
+        }
+
+        outReplacedHandle->reset(&mImporter, replacedHandle);
+        return Error::NONE;
+    }
+
+  protected:
+    std::unique_ptr<V2_1::hal::ComposerDisplayResource> createDisplayResource(
+            ComposerDisplayResource::DisplayType type, uint32_t outputBufferCacheSize) override {
+        return std::make_unique<ComposerDisplayResource>(type, mImporter, outputBufferCacheSize);
+    }
+};
+
+}  // namespace hal
+}  // namespace V2_2
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.2/utils/vts/Android.bp b/graphics/composer/2.2/utils/vts/Android.bp
index dd979cb..5432882 100644
--- a/graphics/composer/2.2/utils/vts/Android.bp
+++ b/graphics/composer/2.2/utils/vts/Android.bp
@@ -19,26 +19,36 @@
     defaults: ["hidl_defaults"],
     srcs: [
         "ComposerVts.cpp",
+        "ReadbackVts.cpp",
+        "RenderEngineVts.cpp",
+    ],
+    shared_libs: [
+        "libui",
     ],
     static_libs: [
         "VtsHalHidlTargetTestBase",
-        "android.hardware.graphics.composer@2.1",
         "android.hardware.graphics.composer@2.1-vts",
         "android.hardware.graphics.composer@2.2",
-        "android.hardware.graphics.mapper@2.1",
         "android.hardware.graphics.mapper@2.1-vts",
+        "libarect",
+        "libmath",
+        "libnativewindow",
+        "librenderengine",
         "android.hardware.graphics.mapper@3.0",
         "android.hardware.graphics.mapper@3.0-vts",
+        "android.hardware.graphics.mapper@4.0",
+        "android.hardware.graphics.mapper@4.0-vts",
     ],
     export_static_lib_headers: [
+        "VtsHalHidlTargetTestBase",
         "android.hardware.graphics.composer@2.1-vts",
+        "android.hardware.graphics.composer@2.2",
+        "android.hardware.graphics.mapper@2.1-vts",
     ],
     header_libs: [
-        "android.hardware.graphics.composer@2.1-command-buffer",
         "android.hardware.graphics.composer@2.2-command-buffer",
     ],
     export_header_lib_headers: [
-        "android.hardware.graphics.composer@2.1-command-buffer",
         "android.hardware.graphics.composer@2.2-command-buffer",
     ],
     cflags: [
diff --git a/graphics/composer/2.2/utils/vts/ComposerVts.cpp b/graphics/composer/2.2/utils/vts/ComposerVts.cpp
index cd6772a..93b67f0 100644
--- a/graphics/composer/2.2/utils/vts/ComposerVts.cpp
+++ b/graphics/composer/2.2/utils/vts/ComposerVts.cpp
@@ -182,17 +182,23 @@
 
 Gralloc::Gralloc() {
     [this] {
-        ALOGD("Attempting to initialize gralloc3");
-        ASSERT_NO_FATAL_FAILURE(mGralloc3 = std::make_shared<Gralloc3>("default", "default",
+        ALOGD("Attempting to initialize gralloc4");
+        ASSERT_NO_FATAL_FAILURE(mGralloc4 = std::make_shared<Gralloc4>("default", "default",
                                                                        /*errOnFailure=*/false));
-        if (mGralloc3->getMapper() == nullptr || mGralloc3->getAllocator() == nullptr) {
-            mGralloc3 = nullptr;
-            ALOGD("Failed to create gralloc3, initializing gralloc2_1");
-            mGralloc2_1 = std::make_shared<Gralloc2_1>(/*errOnFailure*/ false);
-            if (!mGralloc2_1->getMapper()) {
-                mGralloc2_1 = nullptr;
-                ALOGD("Failed to create gralloc2_1, initializing gralloc2");
-                ASSERT_NO_FATAL_FAILURE(mGralloc2 = std::make_shared<Gralloc2>());
+        if (mGralloc4->getMapper() == nullptr || mGralloc4->getAllocator() == nullptr) {
+            mGralloc4 = nullptr;
+            ALOGD("Failed to initialize gralloc4, initializing gralloc3");
+            ASSERT_NO_FATAL_FAILURE(mGralloc3 = std::make_shared<Gralloc3>("default", "default",
+                                                                           /*errOnFailure=*/false));
+            if (mGralloc3->getMapper() == nullptr || mGralloc3->getAllocator() == nullptr) {
+                mGralloc3 = nullptr;
+                ALOGD("Failed to initialize gralloc3, initializing gralloc2_1");
+                mGralloc2_1 = std::make_shared<Gralloc2_1>(/*errOnFailure*/ false);
+                if (!mGralloc2_1->getMapper()) {
+                    mGralloc2_1 = nullptr;
+                    ALOGD("Failed to initialize gralloc2_1, initializing gralloc2");
+                    ASSERT_NO_FATAL_FAILURE(mGralloc2 = std::make_shared<Gralloc2>());
+                }
             }
         }
     }();
@@ -201,7 +207,15 @@
 bool Gralloc::validateBufferSize(const native_handle_t* bufferHandle, uint32_t width,
                                  uint32_t height, uint32_t layerCount, PixelFormat format,
                                  uint64_t usage, uint32_t stride) {
-    if (mGralloc3) {
+    if (mGralloc4) {
+        IMapper4::BufferDescriptorInfo info{};
+        info.width = width;
+        info.height = height;
+        info.layerCount = layerCount;
+        info.format = static_cast<android::hardware::graphics::common::V1_2::PixelFormat>(format);
+        info.usage = usage;
+        return mGralloc4->validateBufferSize(bufferHandle, info, stride);
+    } else if (mGralloc3) {
         IMapper3::BufferDescriptorInfo info{};
         info.width = width;
         info.height = height;
diff --git a/graphics/composer/2.2/utils/vts/ReadbackVts.cpp b/graphics/composer/2.2/utils/vts/ReadbackVts.cpp
new file mode 100644
index 0000000..7bb9121
--- /dev/null
+++ b/graphics/composer/2.2/utils/vts/ReadbackVts.cpp
@@ -0,0 +1,355 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <composer-vts/2.2/ReadbackVts.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_2 {
+namespace vts {
+
+void TestLayer::write(const std::shared_ptr<CommandWriterBase>& writer) {
+    writer->selectLayer(mLayer);
+    writer->setLayerDisplayFrame(mDisplayFrame);
+    writer->setLayerSourceCrop(mSourceCrop);
+    writer->setLayerZOrder(mZOrder);
+    writer->setLayerSurfaceDamage(mSurfaceDamage);
+    writer->setLayerTransform(mTransform);
+    writer->setLayerPlaneAlpha(mAlpha);
+    writer->setLayerBlendMode(mBlendMode);
+}
+
+const std::vector<ColorMode> ReadbackHelper::colorModes = {ColorMode::SRGB, ColorMode::DISPLAY_P3};
+const std::vector<Dataspace> ReadbackHelper::dataspaces = {Dataspace::V0_SRGB,
+                                                           Dataspace::DISPLAY_P3};
+
+std::string ReadbackHelper::getColorModeString(ColorMode mode) {
+    switch (mode) {
+        case ColorMode::SRGB:
+            return std::string("SRGB");
+        case ColorMode::DISPLAY_P3:
+            return std::string("DISPLAY_P3");
+        default:
+            return std::string("Unsupported color mode for readback");
+    }
+}
+
+std::string ReadbackHelper::getDataspaceString(Dataspace dataspace) {
+    switch (dataspace) {
+        case Dataspace::V0_SRGB:
+            return std::string("V0_SRGB");
+        case Dataspace::DISPLAY_P3:
+            return std::string("DISPLAY_P3");
+        case Dataspace::UNKNOWN:
+            return std::string("UNKNOWN");
+        default:
+            return std::string("Unsupported dataspace for readback");
+    }
+}
+
+Dataspace ReadbackHelper::getDataspaceForColorMode(ColorMode mode) {
+    switch (mode) {
+        case ColorMode::DISPLAY_P3:
+            return Dataspace::DISPLAY_P3;
+        case ColorMode::SRGB:
+        default:
+            return Dataspace::UNKNOWN;
+    }
+}
+
+LayerSettings TestLayer::toRenderEngineLayerSettings() {
+    LayerSettings layerSettings;
+
+    layerSettings.alpha = half(mAlpha);
+    layerSettings.disableBlending = mBlendMode == IComposerClient::BlendMode::NONE;
+    layerSettings.geometry.boundaries = FloatRect(
+            static_cast<float>(mDisplayFrame.left), static_cast<float>(mDisplayFrame.top),
+            static_cast<float>(mDisplayFrame.right), static_cast<float>(mDisplayFrame.bottom));
+
+    const mat4 translation = mat4::translate(
+            vec4((mTransform & Transform::FLIP_H ? -mDisplayFrame.right : 0.0f),
+                 (mTransform & Transform::FLIP_V ? -mDisplayFrame.bottom : 0.0f), 0.0f, 1.0f));
+
+    const mat4 scale = mat4::scale(vec4(mTransform & Transform::FLIP_H ? -1.0f : 1.0f,
+                                        mTransform & Transform::FLIP_V ? -1.0f : 1.0f, 1.0f, 1.0f));
+
+    layerSettings.geometry.positionTransform = scale * translation;
+
+    return layerSettings;
+}
+
+int32_t ReadbackHelper::GetBytesPerPixel(PixelFormat pixelFormat) {
+    switch (pixelFormat) {
+        case PixelFormat::RGBA_8888:
+            return 4;
+        case PixelFormat::RGB_888:
+            return 3;
+        default:
+            return -1;
+    }
+}
+
+void ReadbackHelper::fillBuffer(int32_t width, int32_t height, uint32_t stride, void* bufferData,
+                                PixelFormat pixelFormat,
+                                std::vector<IComposerClient::Color> desiredPixelColors) {
+    ASSERT_TRUE(pixelFormat == PixelFormat::RGB_888 || pixelFormat == PixelFormat::RGBA_8888);
+    int32_t bytesPerPixel = GetBytesPerPixel(pixelFormat);
+    ASSERT_NE(-1, bytesPerPixel);
+    for (int row = 0; row < height; row++) {
+        for (int col = 0; col < width; col++) {
+            int pixel = row * width + col;
+            IComposerClient::Color srcColor = desiredPixelColors[pixel];
+
+            int offset = (row * stride + col) * bytesPerPixel;
+            uint8_t* pixelColor = (uint8_t*)bufferData + offset;
+            pixelColor[0] = srcColor.r;
+            pixelColor[1] = srcColor.g;
+            pixelColor[2] = srcColor.b;
+
+            if (bytesPerPixel == 4) {
+                pixelColor[3] = srcColor.a;
+            }
+        }
+    }
+}
+
+void ReadbackHelper::clearColors(std::vector<IComposerClient::Color>& expectedColors, int32_t width,
+                                 int32_t height, int32_t displayWidth) {
+    for (int row = 0; row < height; row++) {
+        for (int col = 0; col < width; col++) {
+            int pixel = row * displayWidth + col;
+            expectedColors[pixel] = BLACK;
+        }
+    }
+}
+
+void ReadbackHelper::fillColorsArea(std::vector<IComposerClient::Color>& expectedColors,
+                                    int32_t stride, IComposerClient::Rect area,
+                                    IComposerClient::Color color) {
+    for (int row = area.top; row < area.bottom; row++) {
+        for (int col = area.left; col < area.right; col++) {
+            int pixel = row * stride + col;
+            expectedColors[pixel] = color;
+        }
+    }
+}
+
+bool ReadbackHelper::readbackSupported(const PixelFormat& pixelFormat, const Dataspace& dataspace,
+                                       const Error error) {
+    if (error != Error::NONE) {
+        return false;
+    }
+    // TODO: add support for RGBA_1010102
+    if (pixelFormat != PixelFormat::RGB_888 && pixelFormat != PixelFormat::RGBA_8888) {
+        return false;
+    }
+    if (std::find(dataspaces.begin(), dataspaces.end(), dataspace) == dataspaces.end()) {
+        return false;
+    }
+    return true;
+}
+
+void ReadbackHelper::compareColorBuffers(std::vector<IComposerClient::Color>& expectedColors,
+                                         void* bufferData, const uint32_t stride,
+                                         const uint32_t width, const uint32_t height,
+                                         const PixelFormat pixelFormat) {
+    const int32_t bytesPerPixel = ReadbackHelper::GetBytesPerPixel(pixelFormat);
+    ASSERT_NE(-1, bytesPerPixel);
+    for (int row = 0; row < height; row++) {
+        for (int col = 0; col < width; col++) {
+            int pixel = row * width + col;
+            int offset = (row * stride + col) * bytesPerPixel;
+            uint8_t* pixelColor = (uint8_t*)bufferData + offset;
+
+            ASSERT_EQ(expectedColors[pixel].r, pixelColor[0]);
+            ASSERT_EQ(expectedColors[pixel].g, pixelColor[1]);
+            ASSERT_EQ(expectedColors[pixel].b, pixelColor[2]);
+        }
+    }
+}
+
+ReadbackBuffer::ReadbackBuffer(Display display, const std::shared_ptr<ComposerClient>& client,
+                               const std::shared_ptr<Gralloc>& gralloc, uint32_t width,
+                               uint32_t height, PixelFormat pixelFormat, Dataspace dataspace) {
+    mDisplay = display;
+
+    mComposerClient = client;
+    mGralloc = gralloc;
+
+    mPixelFormat = pixelFormat;
+    mDataspace = dataspace;
+
+    mWidth = width;
+    mHeight = height;
+    mLayerCount = 1;
+    mFormat = mPixelFormat;
+    mUsage = static_cast<uint64_t>(BufferUsage::CPU_READ_OFTEN | BufferUsage::GPU_TEXTURE);
+
+    mAccessRegion.top = 0;
+    mAccessRegion.left = 0;
+    mAccessRegion.width = width;
+    mAccessRegion.height = height;
+}
+
+ReadbackBuffer::~ReadbackBuffer() {
+    if (mBufferHandle != nullptr) {
+        mGralloc->freeBuffer(mBufferHandle);
+    }
+}
+
+void ReadbackBuffer::setReadbackBuffer() {
+    if (mBufferHandle != nullptr) {
+        mGralloc->freeBuffer(mBufferHandle);
+        mBufferHandle = nullptr;
+    }
+    mBufferHandle = mGralloc->allocate(mWidth, mHeight, mLayerCount, mFormat, mUsage,
+                                       /*import*/ true, &mStride);
+    ASSERT_NE(false, mGralloc->validateBufferSize(mBufferHandle, mWidth, mHeight, mLayerCount,
+                                                  mFormat, mUsage, mStride));
+    ASSERT_NO_FATAL_FAILURE(mComposerClient->setReadbackBuffer(mDisplay, mBufferHandle, -1));
+}
+
+void ReadbackBuffer::checkReadbackBuffer(std::vector<IComposerClient::Color> expectedColors) {
+    // lock buffer for reading
+    int32_t fenceHandle;
+    ASSERT_NO_FATAL_FAILURE(mComposerClient->getReadbackBufferFence(mDisplay, &fenceHandle));
+
+    void* bufData = mGralloc->lock(mBufferHandle, mUsage, mAccessRegion, fenceHandle);
+    ASSERT_TRUE(mPixelFormat == PixelFormat::RGB_888 || mPixelFormat == PixelFormat::RGBA_8888);
+    ReadbackHelper::compareColorBuffers(expectedColors, bufData, mStride, mWidth, mHeight,
+                                        mPixelFormat);
+    int32_t unlockFence = mGralloc->unlock(mBufferHandle);
+    if (unlockFence != -1) {
+        sync_wait(unlockFence, -1);
+        close(unlockFence);
+    }
+}
+
+void TestColorLayer::write(const std::shared_ptr<CommandWriterBase>& writer) {
+    TestLayer::write(writer);
+    writer->setLayerCompositionType(IComposerClient::Composition::SOLID_COLOR);
+    writer->setLayerColor(mColor);
+}
+
+LayerSettings TestColorLayer::toRenderEngineLayerSettings() {
+    LayerSettings layerSettings = TestLayer::toRenderEngineLayerSettings();
+
+    layerSettings.source.solidColor =
+            half3(static_cast<half>(mColor.r) / 255.0, static_cast<half>(mColor.g) / 255.0,
+                  static_cast<half>(mColor.b) / 255.0);
+    layerSettings.alpha = mAlpha * (static_cast<half>(mColor.a) / 255.0);
+    return layerSettings;
+}
+
+TestBufferLayer::TestBufferLayer(const std::shared_ptr<ComposerClient>& client,
+                                 const std::shared_ptr<Gralloc>& gralloc, Display display,
+                                 int32_t width, int32_t height, PixelFormat format,
+                                 IComposerClient::Composition composition)
+    : TestLayer{client, display} {
+    mGralloc = gralloc;
+    mComposition = composition;
+    mWidth = width;
+    mHeight = height;
+    mLayerCount = 1;
+    mFormat = format;
+    mUsage = static_cast<uint64_t>(BufferUsage::CPU_READ_OFTEN | BufferUsage::CPU_WRITE_OFTEN |
+                                   BufferUsage::COMPOSER_OVERLAY);
+
+    mAccessRegion.top = 0;
+    mAccessRegion.left = 0;
+    mAccessRegion.width = width;
+    mAccessRegion.height = height;
+
+    setSourceCrop({0, 0, (float)width, (float)height});
+}
+
+TestBufferLayer::~TestBufferLayer() {
+    if (mBufferHandle != nullptr) {
+        mGralloc->freeBuffer(mBufferHandle);
+    }
+}
+
+void TestBufferLayer::write(const std::shared_ptr<CommandWriterBase>& writer) {
+    TestLayer::write(writer);
+    writer->setLayerCompositionType(mComposition);
+    writer->setLayerVisibleRegion(std::vector<IComposerClient::Rect>(1, mDisplayFrame));
+    if (mBufferHandle != nullptr) writer->setLayerBuffer(0, mBufferHandle, mFillFence);
+}
+
+LayerSettings TestBufferLayer::toRenderEngineLayerSettings() {
+    LayerSettings layerSettings = TestLayer::toRenderEngineLayerSettings();
+    layerSettings.source.buffer.buffer =
+            new GraphicBuffer(mBufferHandle, GraphicBuffer::CLONE_HANDLE, mWidth, mHeight,
+                              static_cast<int32_t>(mFormat), 1, mUsage, mStride);
+
+    layerSettings.source.buffer.usePremultipliedAlpha =
+            mBlendMode == IComposerClient::BlendMode::PREMULTIPLIED;
+
+    const float scaleX = (mSourceCrop.right - mSourceCrop.left) / (mWidth);
+    const float scaleY = (mSourceCrop.bottom - mSourceCrop.top) / (mHeight);
+    const float translateX = mSourceCrop.left / (mWidth);
+    const float translateY = mSourceCrop.top / (mHeight);
+
+    layerSettings.source.buffer.textureTransform =
+            mat4::translate(vec4(translateX, translateY, 0, 1)) *
+            mat4::scale(vec4(scaleX, scaleY, 1.0, 1.0));
+
+    return layerSettings;
+}
+
+void TestBufferLayer::fillBuffer(std::vector<IComposerClient::Color> expectedColors) {
+    void* bufData = mGralloc->lock(mBufferHandle, mUsage, mAccessRegion, -1);
+    ASSERT_NO_FATAL_FAILURE(
+            ReadbackHelper::fillBuffer(mWidth, mHeight, mStride, bufData, mFormat, expectedColors));
+    mFillFence = mGralloc->unlock(mBufferHandle);
+    if (mFillFence != -1) {
+        sync_wait(mFillFence, -1);
+        close(mFillFence);
+    }
+}
+
+void TestBufferLayer::setBuffer(std::vector<IComposerClient::Color> colors) {
+    if (mBufferHandle != nullptr) {
+        mGralloc->freeBuffer(mBufferHandle);
+        mBufferHandle = nullptr;
+    }
+    mBufferHandle = mGralloc->allocate(mWidth, mHeight, mLayerCount, mFormat, mUsage,
+                                       /*import*/ true, &mStride);
+    ASSERT_NE(nullptr, mBufferHandle);
+    ASSERT_NO_FATAL_FAILURE(fillBuffer(colors));
+    ASSERT_NE(false, mGralloc->validateBufferSize(mBufferHandle, mWidth, mHeight, mLayerCount,
+                                                  mFormat, mUsage, mStride));
+}
+
+void TestBufferLayer::setDataspace(Dataspace dataspace,
+                                   const std::shared_ptr<CommandWriterBase>& writer) {
+    writer->selectLayer(mLayer);
+    writer->setLayerDataspace(dataspace);
+}
+
+void TestBufferLayer::setToClientComposition(const std::shared_ptr<CommandWriterBase>& writer) {
+    writer->selectLayer(mLayer);
+    writer->setLayerCompositionType(IComposerClient::Composition::CLIENT);
+}
+
+}  // namespace vts
+}  // namespace V2_2
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.2/utils/vts/RenderEngineVts.cpp b/graphics/composer/2.2/utils/vts/RenderEngineVts.cpp
new file mode 100644
index 0000000..a23d72c
--- /dev/null
+++ b/graphics/composer/2.2/utils/vts/RenderEngineVts.cpp
@@ -0,0 +1,92 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <composer-vts/2.2/RenderEngineVts.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_2 {
+namespace vts {
+
+using mapper::V2_1::IMapper;
+using renderengine::DisplaySettings;
+using renderengine::LayerSettings;
+using renderengine::RenderEngineCreationArgs;
+
+TestRenderEngine::TestRenderEngine(const RenderEngineCreationArgs& args) {
+    mFormat = static_cast<common::V1_1::PixelFormat>(args.pixelFormat);
+    mRenderEngine = renderengine::RenderEngine::create(args);
+}
+
+void TestRenderEngine::setRenderLayers(std::vector<std::shared_ptr<TestLayer>> layers) {
+    sort(layers.begin(), layers.end(),
+         [](const std::shared_ptr<TestLayer>& lhs, const std::shared_ptr<TestLayer>& rhs) -> bool {
+             return lhs->mZOrder < rhs->mZOrder;
+         });
+
+    if (!mCompositionLayers.empty()) {
+        mCompositionLayers.clear();
+    }
+    for (auto& layer : layers) {
+        LayerSettings settings = layer->toRenderEngineLayerSettings();
+        mCompositionLayers.push_back(settings);
+    }
+}
+
+void TestRenderEngine::initGraphicBuffer(uint32_t width, uint32_t height, uint32_t layerCount,
+                                         uint64_t usage) {
+    mGraphicBuffer =
+            new GraphicBuffer(width, height, static_cast<int32_t>(mFormat), layerCount, usage);
+}
+
+void TestRenderEngine::drawLayers() {
+    base::unique_fd bufferFence;
+    base::unique_fd readyFence;
+
+    std::vector<const renderengine::LayerSettings*> compositionLayerPointers;
+    compositionLayerPointers.reserve(mCompositionLayers.size());
+    std::transform(mCompositionLayers.begin(), mCompositionLayers.end(),
+                   std::back_insert_iterator(compositionLayerPointers),
+                   [](renderengine::LayerSettings& settings) -> renderengine::LayerSettings* {
+                       return &settings;
+                   });
+    mRenderEngine->drawLayers(mDisplaySettings, compositionLayerPointers,
+                              mGraphicBuffer->getNativeBuffer(), true, std::move(bufferFence),
+                              &readyFence);
+    int fd = readyFence.release();
+    if (fd != -1) {
+        ASSERT_EQ(0, sync_wait(fd, -1));
+        ASSERT_EQ(0, close(fd));
+    }
+}
+
+void TestRenderEngine::checkColorBuffer(std::vector<V2_2::IComposerClient::Color>& expectedColors) {
+    void* bufferData;
+    ASSERT_EQ(0, mGraphicBuffer->lock(mGraphicBuffer->getUsage(), &bufferData));
+    ReadbackHelper::compareColorBuffers(expectedColors, bufferData, mGraphicBuffer->getStride(),
+                                        mGraphicBuffer->getWidth(), mGraphicBuffer->getHeight(),
+                                        mFormat);
+    ASSERT_EQ(0, mGraphicBuffer->unlock());
+}
+
+}  // namespace vts
+}  // namespace V2_2
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/ComposerVts.h b/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/ComposerVts.h
index 8fa9b7b..5d22305 100644
--- a/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/ComposerVts.h
+++ b/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/ComposerVts.h
@@ -44,9 +44,11 @@
 using common::V1_1::RenderIntent;
 using IMapper2_1 = android::hardware::graphics::mapper::V2_1::IMapper;
 using IMapper3 = android::hardware::graphics::mapper::V3_0::IMapper;
+using IMapper4 = android::hardware::graphics::mapper::V4_0::IMapper;
 using Gralloc2 = android::hardware::graphics::mapper::V2_0::vts::Gralloc;
 using Gralloc2_1 = android::hardware::graphics::mapper::V2_1::vts::Gralloc;
 using Gralloc3 = android::hardware::graphics::mapper::V3_0::vts::Gralloc;
+using Gralloc4 = android::hardware::graphics::mapper::V4_0::vts::Gralloc;
 
 class ComposerClient;
 
diff --git a/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/ReadbackVts.h b/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/ReadbackVts.h
new file mode 100644
index 0000000..7519a64
--- /dev/null
+++ b/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/ReadbackVts.h
@@ -0,0 +1,208 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android-base/unique_fd.h>
+#include <android/hardware/graphics/composer/2.2/IComposerClient.h>
+#include <composer-command-buffer/2.2/ComposerCommandBuffer.h>
+#include <composer-vts/2.1/GraphicsComposerCallback.h>
+#include <composer-vts/2.1/TestCommandReader.h>
+#include <composer-vts/2.2/ComposerVts.h>
+#include <mapper-vts/2.1/MapperVts.h>
+#include <renderengine/RenderEngine.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_2 {
+namespace vts {
+
+using android::hardware::hidl_handle;
+using common::V1_1::BufferUsage;
+using common::V1_1::Dataspace;
+using common::V1_1::PixelFormat;
+using IMapper2_1 = mapper::V2_1::IMapper;
+using Gralloc2_1 = mapper::V2_1::vts::Gralloc;
+using renderengine::LayerSettings;
+using V2_1::Display;
+using V2_1::Layer;
+using V2_1::vts::AccessRegion;
+using V2_1::vts::TestCommandReader;
+
+static const IComposerClient::Color BLACK = {0, 0, 0, 0xff};
+static const IComposerClient::Color RED = {0xff, 0, 0, 0xff};
+static const IComposerClient::Color TRANSLUCENT_RED = {0xff, 0, 0, 0x33};
+static const IComposerClient::Color GREEN = {0, 0xff, 0, 0xff};
+static const IComposerClient::Color BLUE = {0, 0, 0xff, 0xff};
+
+class TestLayer {
+  public:
+    TestLayer(const std::shared_ptr<ComposerClient>& client, Display display)
+        : mLayer(client->createLayer(display, kBufferSlotCount)), mComposerClient(client) {}
+
+    // ComposerClient will take care of destroying layers, no need to explicitly
+    // call destroyLayers here
+    virtual ~TestLayer(){};
+
+    virtual void write(const std::shared_ptr<CommandWriterBase>& writer);
+    virtual LayerSettings toRenderEngineLayerSettings();
+
+    void setDisplayFrame(IComposerClient::Rect frame) { mDisplayFrame = frame; }
+    void setSourceCrop(IComposerClient::FRect crop) { mSourceCrop = crop; }
+    void setZOrder(uint32_t z) { mZOrder = z; }
+
+    void setSurfaceDamage(std::vector<IComposerClient::Rect> surfaceDamage) {
+        mSurfaceDamage = surfaceDamage;
+    }
+
+    void setTransform(Transform transform) { mTransform = transform; }
+    void setAlpha(float alpha) { mAlpha = alpha; }
+    void setBlendMode(IComposerClient::BlendMode blendMode) { mBlendMode = blendMode; }
+
+    static constexpr uint32_t kBufferSlotCount = 64;
+
+    IComposerClient::Rect mDisplayFrame = {0, 0, 0, 0};
+    uint32_t mZOrder = 0;
+    std::vector<IComposerClient::Rect> mSurfaceDamage;
+    Transform mTransform = static_cast<Transform>(0);
+    IComposerClient::FRect mSourceCrop = {0, 0, 0, 0};
+    float mAlpha = 1.0;
+    IComposerClient::BlendMode mBlendMode = IComposerClient::BlendMode::NONE;
+
+  protected:
+    Layer mLayer;
+
+  private:
+    std::shared_ptr<ComposerClient> const mComposerClient;
+};
+
+class TestColorLayer : public TestLayer {
+  public:
+    TestColorLayer(const std::shared_ptr<ComposerClient>& client, Display display)
+        : TestLayer{client, display} {}
+
+    void write(const std::shared_ptr<CommandWriterBase>& writer) override;
+
+    LayerSettings toRenderEngineLayerSettings() override;
+
+    void setColor(IComposerClient::Color color) { mColor = color; }
+
+  private:
+    IComposerClient::Color mColor = {0xff, 0xff, 0xff, 0xff};
+};
+
+class TestBufferLayer : public TestLayer {
+  public:
+    TestBufferLayer(
+            const std::shared_ptr<ComposerClient>& client, const std::shared_ptr<Gralloc>& gralloc,
+            Display display, int32_t width, int32_t height, PixelFormat format,
+            IComposerClient::Composition composition = IComposerClient::Composition::DEVICE);
+
+    ~TestBufferLayer();
+
+    void write(const std::shared_ptr<CommandWriterBase>& writer) override;
+
+    LayerSettings toRenderEngineLayerSettings() override;
+
+    void fillBuffer(std::vector<IComposerClient::Color> expectedColors);
+
+    void setBuffer(std::vector<IComposerClient::Color> colors);
+
+    void setDataspace(Dataspace dataspace, const std::shared_ptr<CommandWriterBase>& writer);
+
+    void setToClientComposition(const std::shared_ptr<CommandWriterBase>& writer);
+
+    uint32_t mWidth;
+    uint32_t mHeight;
+    uint32_t mLayerCount;
+    PixelFormat mFormat;
+    uint64_t mUsage;
+    AccessRegion mAccessRegion;
+    uint32_t mStride;
+
+  protected:
+    IComposerClient::Composition mComposition;
+    std::shared_ptr<Gralloc> mGralloc;
+    int32_t mFillFence;
+    const native_handle_t* mBufferHandle = nullptr;
+};
+
+class ReadbackHelper : public ::testing::VtsHalHidlTargetTestBase {
+  public:
+    static std::string getColorModeString(ColorMode mode);
+
+    static std::string getDataspaceString(Dataspace dataspace);
+
+    static Dataspace getDataspaceForColorMode(ColorMode mode);
+
+    static int32_t GetBytesPerPixel(PixelFormat pixelFormat);
+
+    static void fillBuffer(int32_t width, int32_t height, uint32_t stride, void* bufferData,
+                           PixelFormat pixelFormat,
+                           std::vector<IComposerClient::Color> desiredPixelColors);
+
+    static void clearColors(std::vector<IComposerClient::Color>& expectedColors, int32_t width,
+                            int32_t height, int32_t displayWidth);
+
+    static void fillColorsArea(std::vector<IComposerClient::Color>& expectedColors, int32_t stride,
+                               IComposerClient::Rect area, IComposerClient::Color color);
+
+    static bool readbackSupported(const PixelFormat& pixelFormat, const Dataspace& dataspace,
+                                  const Error error);
+
+    static const std::vector<ColorMode> colorModes;
+    static const std::vector<Dataspace> dataspaces;
+
+    static void compareColorBuffers(std::vector<IComposerClient::Color>& expectedColors,
+                                    void* bufferData, const uint32_t stride, const uint32_t width,
+                                    const uint32_t height, const PixelFormat pixelFormat);
+};
+
+class ReadbackBuffer {
+  public:
+    ReadbackBuffer(Display display, const std::shared_ptr<ComposerClient>& client,
+                   const std::shared_ptr<Gralloc>& gralloc, uint32_t width, uint32_t height,
+                   PixelFormat pixelFormat, Dataspace dataspace);
+    ~ReadbackBuffer();
+
+    void setReadbackBuffer();
+
+    void checkReadbackBuffer(std::vector<IComposerClient::Color> expectedColors);
+
+  protected:
+    uint32_t mWidth;
+    uint32_t mHeight;
+    uint32_t mLayerCount;
+    PixelFormat mFormat;
+    uint64_t mUsage;
+    AccessRegion mAccessRegion;
+    uint32_t mStride;
+    const native_handle_t* mBufferHandle = nullptr;
+    PixelFormat mPixelFormat;
+    Dataspace mDataspace;
+    Display mDisplay;
+    std::shared_ptr<Gralloc> mGralloc;
+    std::shared_ptr<ComposerClient> mComposerClient;
+};
+
+}  // namespace vts
+}  // namespace V2_2
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/RenderEngineVts.h b/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/RenderEngineVts.h
new file mode 100644
index 0000000..b936cab
--- /dev/null
+++ b/graphics/composer/2.2/utils/vts/include/composer-vts/2.2/RenderEngineVts.h
@@ -0,0 +1,70 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <composer-vts/2.2/ReadbackVts.h>
+#include <math/half.h>
+#include <math/vec3.h>
+#include <renderengine/RenderEngine.h>
+#include <ui/GraphicBuffer.h>
+#include <ui/GraphicBufferAllocator.h>
+#include <ui/PixelFormat.h>
+#include <ui/Rect.h>
+#include <ui/Region.h>
+
+#include <VtsHalHidlTargetTestBase.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_2 {
+namespace vts {
+
+using mapper::V2_1::IMapper;
+using renderengine::DisplaySettings;
+using renderengine::RenderEngineCreationArgs;
+using vts::Gralloc;
+
+class TestRenderEngine {
+  public:
+    static constexpr uint32_t sMaxFrameBufferAcquireBuffers = 2;
+
+    TestRenderEngine(const RenderEngineCreationArgs& args);
+    ~TestRenderEngine() = default;
+
+    void setRenderLayers(std::vector<std::shared_ptr<TestLayer>> layers);
+    void initGraphicBuffer(uint32_t width, uint32_t height, uint32_t layerCount, uint64_t usage);
+    void setDisplaySettings(DisplaySettings& displaySettings) {
+        mDisplaySettings = displaySettings;
+    };
+    void drawLayers();
+    void checkColorBuffer(std::vector<V2_2::IComposerClient::Color>& expectedColors);
+
+  private:
+    common::V1_1::PixelFormat mFormat;
+    std::vector<renderengine::LayerSettings> mCompositionLayers;
+    std::unique_ptr<renderengine::RenderEngine> mRenderEngine;
+    std::vector<renderengine::LayerSettings> mRenderLayers;
+    sp<GraphicBuffer> mGraphicBuffer;
+    DisplaySettings mDisplaySettings;
+};
+
+}  // namespace vts
+}  // namespace V2_2
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.2/vts/functional/Android.bp b/graphics/composer/2.2/vts/functional/Android.bp
index a8e70ae..f987516 100644
--- a/graphics/composer/2.2/vts/functional/Android.bp
+++ b/graphics/composer/2.2/vts/functional/Android.bp
@@ -19,18 +19,25 @@
     defaults: ["VtsHalTargetTestDefaults"],
     srcs: [
         "VtsHalGraphicsComposerV2_2ReadbackTest.cpp",
-        "VtsHalGraphicsComposerV2_2TargetTest.cpp",
+        "VtsHalGraphicsComposerV2_2TargetTest.cpp"
     ],
 
     // TODO(b/64437680): Assume these libs are always available on the device.
     shared_libs: [
+        "libEGL",
+        "libGLESv1_CM",
+        "libGLESv2",
         "libfmq",
+        "libgui",
         "libhidlbase",
+        "libprocessgroup",
         "libsync",
+        "libui",
     ],
     static_libs: [
         "android.hardware.graphics.allocator@2.0",
         "android.hardware.graphics.allocator@3.0",
+        "android.hardware.graphics.allocator@4.0",
         "android.hardware.graphics.common@1.1",
         "android.hardware.graphics.composer@2.1",
         "android.hardware.graphics.composer@2.1-vts",
@@ -42,10 +49,14 @@
         "android.hardware.graphics.mapper@2.1-vts",
         "android.hardware.graphics.mapper@3.0",
         "android.hardware.graphics.mapper@3.0-vts",
+        "android.hardware.graphics.mapper@4.0",
+        "android.hardware.graphics.mapper@4.0-vts",
+        "librenderengine"
     ],
     header_libs: [
         "android.hardware.graphics.composer@2.1-command-buffer",
         "android.hardware.graphics.composer@2.2-command-buffer",
     ],
-    test_suites: ["general-tests"],
+    disable_framework: true,
+    test_suites: ["general-tests", "vts-core"],
 }
diff --git a/graphics/composer/2.2/vts/functional/VtsHalGraphicsComposerV2_2ReadbackTest.cpp b/graphics/composer/2.2/vts/functional/VtsHalGraphicsComposerV2_2ReadbackTest.cpp
index 02c4c9c..044bd96 100644
--- a/graphics/composer/2.2/vts/functional/VtsHalGraphicsComposerV2_2ReadbackTest.cpp
+++ b/graphics/composer/2.2/vts/functional/VtsHalGraphicsComposerV2_2ReadbackTest.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright 2018 The Android Open Source Project
+ * Copyright 2019 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -16,15 +16,20 @@
 
 #define LOG_TAG "graphics_composer_hidl_hal_readback_tests@2.2"
 
-#include <VtsHalHidlTargetTestBase.h>
-#include <VtsHalHidlTargetTestEnvBase.h>
-#include <android-base/unique_fd.h>
-#include <android/hardware/graphics/composer/2.2/IComposerClient.h>
 #include <composer-command-buffer/2.2/ComposerCommandBuffer.h>
 #include <composer-vts/2.1/GraphicsComposerCallback.h>
 #include <composer-vts/2.1/TestCommandReader.h>
 #include <composer-vts/2.2/ComposerVts.h>
-#include <mapper-vts/2.1/MapperVts.h>
+#include <composer-vts/2.2/ReadbackVts.h>
+#include <composer-vts/2.2/RenderEngineVts.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
+#include <ui/GraphicBuffer.h>
+#include <ui/GraphicBufferAllocator.h>
+#include <ui/PixelFormat.h>
+#include <ui/Rect.h>
+#include <ui/Region.h>
 
 namespace android {
 namespace hardware {
@@ -34,130 +39,24 @@
 namespace vts {
 namespace {
 
+using android::GraphicBuffer;
+using android::Rect;
 using android::hardware::hidl_handle;
 using common::V1_1::BufferUsage;
 using common::V1_1::Dataspace;
 using common::V1_1::PixelFormat;
 using mapper::V2_1::IMapper;
+using V2_1::Config;
 using V2_1::Display;
-using V2_1::Layer;
-using V2_1::vts::AccessRegion;
 using V2_1::vts::TestCommandReader;
+using vts::Gralloc;
 
-static const IComposerClient::Color BLACK = {0, 0, 0, 0xff};
-static const IComposerClient::Color RED = {0xff, 0, 0, 0xff};
-static const IComposerClient::Color TRANSLUCENT_RED = {0xff, 0, 0, 0x33};
-static const IComposerClient::Color GREEN = {0, 0xff, 0, 0xff};
-static const IComposerClient::Color BLUE = {0, 0, 0xff, 0xff};
-
-// Test environment for graphics.composer
-class GraphicsComposerHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
-   public:
-    // get the test environment singleton
-    static GraphicsComposerHidlEnvironment* Instance() {
-        static GraphicsComposerHidlEnvironment* instance = new GraphicsComposerHidlEnvironment;
-        return instance;
-    }
-    virtual void registerTestServices() override { registerTestService<IComposer>(); }
-
-   private:
-    GraphicsComposerHidlEnvironment() {}
-    GTEST_DISALLOW_COPY_AND_ASSIGN_(GraphicsComposerHidlEnvironment);
-};
-
-class TestLayer {
-   public:
-    TestLayer(const std::shared_ptr<ComposerClient>& client, Display display)
-        : mLayer(client->createLayer(display, kBufferSlotCount)), mComposerClient(client) {}
-
-    // ComposerClient will take care of destroying layers, no need to explicitly
-    // call destroyLayers here
-    virtual ~TestLayer(){};
-
-    virtual void write(const std::shared_ptr<CommandWriterBase>& writer) {
-        writer->selectLayer(mLayer);
-        writer->setLayerDisplayFrame(mDisplayFrame);
-        writer->setLayerSourceCrop(mSourceCrop);
-        writer->setLayerZOrder(mZOrder);
-        writer->setLayerSurfaceDamage(mSurfaceDamage);
-        writer->setLayerTransform(mTransform);
-        writer->setLayerPlaneAlpha(mAlpha);
-        writer->setLayerBlendMode(mBlendMode);
-    }
-
-    void setDisplayFrame(IComposerClient::Rect frame) { mDisplayFrame = frame; }
-    void setSourceCrop(IComposerClient::FRect crop) { mSourceCrop = crop; }
-    void setZOrder(uint32_t z) { mZOrder = z; }
-
-    void setSurfaceDamage(std::vector<IComposerClient::Rect> surfaceDamage) {
-        mSurfaceDamage = surfaceDamage;
-    }
-
-    void setTransform(Transform transform) { mTransform = transform; }
-    void setAlpha(float alpha) { mAlpha = alpha; }
-    void setBlendMode(IComposerClient::BlendMode blendMode) { mBlendMode = blendMode; }
-
-    static constexpr uint32_t kBufferSlotCount = 64;
-
-    IComposerClient::Rect mDisplayFrame = {0, 0, 0, 0};
-    uint32_t mZOrder = 0;
-    std::vector<IComposerClient::Rect> mSurfaceDamage;
-    Transform mTransform = static_cast<Transform>(0);
-    IComposerClient::FRect mSourceCrop = {0, 0, 0, 0};
-    float mAlpha = 1.0;
-    IComposerClient::BlendMode mBlendMode = IComposerClient::BlendMode::NONE;
-
-   protected:
-    Layer mLayer;
-
-   private:
-    std::shared_ptr<ComposerClient> const mComposerClient;
-};
-
-class GraphicsComposerReadbackTest : public ::testing::VtsHalHidlTargetTestBase {
-   public:
-    static int32_t GetBytesPerPixel(PixelFormat pixelFormat) {
-        switch (pixelFormat) {
-            case PixelFormat::RGBA_8888:
-                return 4;
-            case PixelFormat::RGB_888:
-                return 3;
-            default:
-                return -1;
-        }
-    }
-
-    static void fillBuffer(int32_t width, int32_t height, uint32_t stride, void* bufferData,
-                           PixelFormat pixelFormat,
-                           std::vector<IComposerClient::Color> desiredPixelColors) {
-        ASSERT_TRUE(pixelFormat == PixelFormat::RGB_888 || pixelFormat == PixelFormat::RGBA_8888);
-        int32_t bytesPerPixel = GetBytesPerPixel(pixelFormat);
-        ASSERT_NE(-1, bytesPerPixel);
-        for (int row = 0; row < height; row++) {
-            for (int col = 0; col < width; col++) {
-                int pixel = row * width + col;
-                IComposerClient::Color srcColor = desiredPixelColors[pixel];
-
-                int offset = (row * stride + col) * bytesPerPixel;
-                uint8_t* pixelColor = (uint8_t*)bufferData + offset;
-                pixelColor[0] = srcColor.r;
-                pixelColor[1] = srcColor.g;
-                pixelColor[2] = srcColor.b;
-
-                if (bytesPerPixel == 4) {
-                    pixelColor[3] = srcColor.a;
-                }
-            }
-        }
-    }
-
-   protected:
+class GraphicsCompositionTestBase : public ::testing::Test {
+  protected:
     using PowerMode = V2_1::IComposerClient::PowerMode;
-    void SetUp() override {
-        VtsHalHidlTargetTestBase::SetUp();
+    void SetUpBase(const std::string& service_name) {
         ASSERT_NO_FATAL_FAILURE(
-            mComposer = std::make_unique<Composer>(
-                GraphicsComposerHidlEnvironment::Instance()->getServiceName<IComposer>()));
+                mComposer = std::make_unique<Composer>(IComposer::getService(service_name)));
         ASSERT_NO_FATAL_FAILURE(mComposerClient = mComposer->createClient());
         mComposerCallback = new V2_1::vts::GraphicsComposerCallback;
         mComposerClient->registerCallback(mComposerCallback);
@@ -173,6 +72,8 @@
             mDisplayHeight = mComposerClient->getDisplayAttribute(
                 mPrimaryDisplay, activeConfig, IComposerClient::Attribute::HEIGHT));
 
+        setTestColorModes();
+
         // explicitly disable vsync
         ASSERT_NO_FATAL_FAILURE(mComposerClient->setVsyncEnabled(mPrimaryDisplay, false));
         mComposerCallback->setVsyncAllowed(false);
@@ -182,22 +83,28 @@
         mReader = std::make_unique<TestCommandReader>();
         mGralloc = std::make_shared<Gralloc>();
 
-        std::vector<ColorMode> colorModes = mComposerClient->getColorModes(mPrimaryDisplay);
-        if (std::find(colorModes.begin(), colorModes.end(), ColorMode::SRGB) == colorModes.end()) {
-            mHasReadbackBuffer = false;
-            return;
-        }
-        mWriter->selectDisplay(mPrimaryDisplay);
-        ASSERT_NO_FATAL_FAILURE(mComposerClient->setColorMode(mPrimaryDisplay, ColorMode::SRGB,
-                                                              RenderIntent::COLORIMETRIC));
-        mComposerClient->getRaw()->getReadbackBufferAttributes(
-            mPrimaryDisplay,
-            [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
-                mHasReadbackBuffer = readbackSupported(tmpPixelFormat, tmpDataspace, tmpError);
-                mPixelFormat = tmpPixelFormat;
-                mDataspace = tmpDataspace;
-            });
         ASSERT_NO_FATAL_FAILURE(mComposerClient->setPowerMode(mPrimaryDisplay, PowerMode::ON));
+
+        ASSERT_NO_FATAL_FAILURE(
+                mTestRenderEngine = std::unique_ptr<TestRenderEngine>(new TestRenderEngine(
+                        renderengine::RenderEngineCreationArgs::Builder()
+                            .setPixelFormat(static_cast<int>(ui::PixelFormat::RGBA_8888))
+                            .setImageCacheSize(TestRenderEngine::sMaxFrameBufferAcquireBuffers)
+                            .setUseColorManagerment(true)
+                            .setEnableProtectedContext(false)
+                            .setPrecacheToneMapperShaderOnly(false)
+                            .setContextPriority(renderengine::RenderEngine::ContextPriority::HIGH)
+                            .build())));
+
+        renderengine::DisplaySettings clientCompositionDisplay;
+        clientCompositionDisplay.physicalDisplay = Rect(mDisplayWidth, mDisplayHeight);
+        clientCompositionDisplay.clip = clientCompositionDisplay.physicalDisplay;
+        clientCompositionDisplay.clearRegion = Region(clientCompositionDisplay.physicalDisplay);
+
+        mTestRenderEngine->initGraphicBuffer(
+                static_cast<uint32_t>(mDisplayWidth), static_cast<uint32_t>(mDisplayHeight), 1,
+                static_cast<uint64_t>(BufferUsage::CPU_READ_OFTEN | BufferUsage::CPU_WRITE_OFTEN));
+        mTestRenderEngine->setDisplaySettings(clientCompositionDisplay);
     }
 
     void TearDown() override {
@@ -209,7 +116,6 @@
             EXPECT_EQ(0, mComposerCallback->getInvalidRefreshCount());
             EXPECT_EQ(0, mComposerCallback->getInvalidVsyncCount());
         }
-        VtsHalHidlTargetTestBase::TearDown();
     }
 
     void clearCommandReaderState() {
@@ -217,10 +123,6 @@
         mReader->mErrors.clear();
     }
 
-    void execute() {
-        ASSERT_NO_FATAL_FAILURE(mComposerClient->execute(mReader.get(), mWriter.get()));
-    }
-
     void writeLayers(const std::vector<std::shared_ptr<TestLayer>>& layers) {
         for (auto layer : layers) {
             layer->write(mWriter);
@@ -228,42 +130,10 @@
         execute();
     }
 
-    void clearColors(std::vector<IComposerClient::Color>& expectedColors, int32_t width,
-                     int32_t height) {
-        for (int row = 0; row < height; row++) {
-            for (int col = 0; col < width; col++) {
-                int pixel = row * mDisplayWidth + col;
-                expectedColors[pixel] = BLACK;
-            }
-        }
+    void execute() {
+        ASSERT_NO_FATAL_FAILURE(mComposerClient->execute(mReader.get(), mWriter.get()));
     }
 
-    void fillColorsArea(std::vector<IComposerClient::Color>& expectedColors, int32_t stride,
-                        IComposerClient::Rect area, IComposerClient::Color color) {
-        for (int row = area.top; row < area.bottom; row++) {
-            for (int col = area.left; col < area.right; col++) {
-                int pixel = row * stride + col;
-                expectedColors[pixel] = color;
-            }
-        }
-    }
-
-    bool readbackSupported(const PixelFormat& pixelFormat, const Dataspace& dataspace,
-                           const Error error) {
-        if (error != Error::NONE) {
-            return false;
-        }
-        // TODO: add support for RGBA_1010102
-        if (pixelFormat != PixelFormat::RGB_888 && pixelFormat != PixelFormat::RGBA_8888) {
-            return false;
-        }
-        if (dataspace != Dataspace::V0_SRGB) {
-            return false;
-        }
-        return true;
-    }
-
-
     std::unique_ptr<Composer> mComposer;
     std::shared_ptr<ComposerClient> mComposerClient;
 
@@ -272,9 +142,11 @@
     Display mPrimaryDisplay;
     int32_t mDisplayWidth;
     int32_t mDisplayHeight;
+    std::vector<ColorMode> mTestColorModes;
     std::shared_ptr<CommandWriterBase> mWriter;
     std::unique_ptr<TestCommandReader> mReader;
     std::shared_ptr<Gralloc> mGralloc;
+    std::unique_ptr<TestRenderEngine> mTestRenderEngine;
 
     bool mHasReadbackBuffer;
     PixelFormat mPixelFormat;
@@ -293,735 +165,782 @@
             return displays[0];
         }
     }
-};
-class ReadbackBuffer {
-   public:
-    ReadbackBuffer(Display display, const std::shared_ptr<ComposerClient>& client,
-                   const std::shared_ptr<Gralloc>& gralloc, uint32_t width, uint32_t height,
-                   PixelFormat pixelFormat, Dataspace dataspace) {
-        mDisplay = display;
 
-        mComposerClient = client;
-        mGralloc = gralloc;
-
-        mFormat = pixelFormat;
-        mDataspace = dataspace;
-
-        mWidth = width;
-        mHeight = height;
-        mLayerCount = 1;
-        mUsage = static_cast<uint64_t>(BufferUsage::CPU_READ_OFTEN | BufferUsage::GPU_TEXTURE);
-
-        mAccessRegion.top = 0;
-        mAccessRegion.left = 0;
-        mAccessRegion.width = width;
-        mAccessRegion.height = height;
-    };
-
-    ~ReadbackBuffer() {
-        if (mBufferHandle != nullptr) {
-            mGralloc->freeBuffer(mBufferHandle);
-        }
-    }
-
-    void setReadbackBuffer() {
-        if (mBufferHandle != nullptr) {
-            mGralloc->freeBuffer(mBufferHandle);
-            mBufferHandle = nullptr;
-        }
-        mBufferHandle = mGralloc->allocate(mWidth, mHeight, mLayerCount, mFormat, mUsage,
-                                           /*import*/ true, &mStride);
-        ASSERT_NE(false, mGralloc->validateBufferSize(mBufferHandle, mWidth, mHeight, mLayerCount,
-                                                      mFormat, mUsage, mStride));
-        ASSERT_NO_FATAL_FAILURE(mComposerClient->setReadbackBuffer(mDisplay, mBufferHandle, -1));
-    }
-
-    void checkReadbackBuffer(std::vector<IComposerClient::Color> expectedColors) {
-        // lock buffer for reading
-        int32_t fenceHandle;
-        ASSERT_NO_FATAL_FAILURE(mComposerClient->getReadbackBufferFence(mDisplay, &fenceHandle));
-
-        void* bufData = mGralloc->lock(mBufferHandle, mUsage, mAccessRegion, fenceHandle);
-        ASSERT_TRUE(mFormat == PixelFormat::RGB_888 || mFormat == PixelFormat::RGBA_8888);
-        int32_t bytesPerPixel = GraphicsComposerReadbackTest::GetBytesPerPixel(mFormat);
-        ASSERT_NE(-1, bytesPerPixel);
-        for (int row = 0; row < mHeight; row++) {
-            for (int col = 0; col < mWidth; col++) {
-                int pixel = row * mWidth + col;
-                int offset = (row * mStride + col) * bytesPerPixel;
-                uint8_t* pixelColor = (uint8_t*)bufData + offset;
-
-                ASSERT_EQ(expectedColors[pixel].r, pixelColor[0]);
-                ASSERT_EQ(expectedColors[pixel].g, pixelColor[1]);
-                ASSERT_EQ(expectedColors[pixel].b, pixelColor[2]);
+    void setTestColorModes() {
+        mTestColorModes.clear();
+        mComposerClient->getRaw()->getColorModes_2_2(mPrimaryDisplay, [&](const auto& tmpError,
+                                                                          const auto& tmpModes) {
+            ASSERT_EQ(Error::NONE, tmpError);
+            for (ColorMode mode : tmpModes) {
+                if (std::find(ReadbackHelper::colorModes.begin(), ReadbackHelper::colorModes.end(),
+                              mode) != ReadbackHelper::colorModes.end()) {
+                    mTestColorModes.push_back(mode);
+                }
             }
-        }
-        int32_t unlockFence = mGralloc->unlock(mBufferHandle);
-        if (unlockFence != -1) {
-            sync_wait(unlockFence, -1);
-            close(unlockFence);
-        }
+        });
     }
-
-    uint32_t mWidth;
-    uint32_t mHeight;
-    uint32_t mLayerCount;
-    PixelFormat mFormat;
-    uint64_t mUsage;
-    AccessRegion mAccessRegion;
-
-  protected:
-    uint32_t mStride;
-    const native_handle_t* mBufferHandle = nullptr;
-    Dataspace mDataspace;
-    Display mDisplay;
-    std::shared_ptr<Gralloc> mGralloc;
-    std::shared_ptr<ComposerClient> mComposerClient;
 };
 
-class TestColorLayer : public TestLayer {
-   public:
-    TestColorLayer(const std::shared_ptr<ComposerClient>& client, Display display)
-        : TestLayer{client, display} {}
-
-    void write(const std::shared_ptr<CommandWriterBase>& writer) override {
-        TestLayer::write(writer);
-        writer->setLayerCompositionType(IComposerClient::Composition::SOLID_COLOR);
-        writer->setLayerColor(mColor);
-    }
-
-    void setColor(IComposerClient::Color color) { mColor = color; }
-
-   private:
-    IComposerClient::Color mColor = {0xff, 0xff, 0xff, 0xff};
+class GraphicsCompositionTest : public GraphicsCompositionTestBase,
+                                public testing::WithParamInterface<std::string> {
+  public:
+    void SetUp() override { SetUpBase(GetParam()); }
 };
 
-class TestBufferLayer : public TestLayer {
-   public:
-    TestBufferLayer(const std::shared_ptr<ComposerClient>& client,
-                    const std::shared_ptr<Gralloc>& gralloc, Display display, int32_t width,
-                    int32_t height, PixelFormat format,
-                    IComposerClient::Composition composition = IComposerClient::Composition::DEVICE)
-        : TestLayer{client, display} {
-        mGralloc = gralloc;
-        mComposition = composition;
-        mWidth = width;
-        mHeight = height;
-        mLayerCount = 1;
-        mFormat = format;
-        mUsage = static_cast<uint64_t>(BufferUsage::CPU_READ_OFTEN | BufferUsage::CPU_WRITE_OFTEN |
-                                       BufferUsage::COMPOSER_OVERLAY);
-
-        mAccessRegion.top = 0;
-        mAccessRegion.left = 0;
-        mAccessRegion.width = width;
-        mAccessRegion.height = height;
-
-        setSourceCrop({0, 0, (float)width, (float)height});
-    }
-
-    ~TestBufferLayer() {
-        if (mBufferHandle != nullptr) {
-            mGralloc->freeBuffer(mBufferHandle);
-        }
-    }
-
-    void write(const std::shared_ptr<CommandWriterBase>& writer) override {
-        TestLayer::write(writer);
-        writer->setLayerCompositionType(mComposition);
-        writer->setLayerDataspace(Dataspace::UNKNOWN);
-        writer->setLayerVisibleRegion(std::vector<IComposerClient::Rect>(1, mDisplayFrame));
-        if (mBufferHandle != nullptr) writer->setLayerBuffer(0, mBufferHandle, mFillFence);
-    }
-
-    void fillBuffer(std::vector<IComposerClient::Color> expectedColors) {
-        void* bufData = mGralloc->lock(mBufferHandle, mUsage, mAccessRegion, -1);
-        ASSERT_NO_FATAL_FAILURE(GraphicsComposerReadbackTest::fillBuffer(
-                mWidth, mHeight, mStride, bufData, mFormat, expectedColors));
-        mFillFence = mGralloc->unlock(mBufferHandle);
-        if (mFillFence != -1) {
-            sync_wait(mFillFence, -1);
-            close(mFillFence);
-        }
-    }
-    void setBuffer(std::vector<IComposerClient::Color> colors) {
-        if (mBufferHandle != nullptr) {
-            mGralloc->freeBuffer(mBufferHandle);
-            mBufferHandle = nullptr;
-        }
-        mBufferHandle = mGralloc->allocate(mWidth, mHeight, mLayerCount, mFormat, mUsage,
-                                           /*import*/ true, &mStride);
-        ASSERT_NE(nullptr, mBufferHandle);
-        ASSERT_NO_FATAL_FAILURE(fillBuffer(colors));
-        ASSERT_NE(false, mGralloc->validateBufferSize(mBufferHandle, mWidth, mHeight, mLayerCount,
-                                                      mFormat, mUsage, mStride));
-    }
-
-    void setToClientComposition(const std::shared_ptr<CommandWriterBase>& writer) {
-        writer->selectLayer(mLayer);
-        writer->setLayerCompositionType(IComposerClient::Composition::CLIENT);
-    }
-
-    AccessRegion mAccessRegion;
-    uint32_t mStride;
-    uint32_t mWidth;
-    uint32_t mHeight;
-    uint32_t mLayerCount;
-    PixelFormat mFormat;
-
-  protected:
-    uint64_t mUsage;
-    IComposerClient::Composition mComposition;
-    std::shared_ptr<Gralloc> mGralloc;
-    int32_t mFillFence;
-    const native_handle_t* mBufferHandle = nullptr;
-};
-
-TEST_F(GraphicsComposerReadbackTest, SingleSolidColorLayer) {
-    if (!mHasReadbackBuffer) {
-        std::cout << "Readback not supported or unsuppported pixelFormat/dataspace or SRGB not a "
-                     "valid color mode"
+TEST_P(GraphicsCompositionTest, SingleSolidColorLayer) {
+    for (ColorMode mode : mTestColorModes) {
+        std::cout << "---Testing Color Mode " << ReadbackHelper::getColorModeString(mode) << "---"
                   << std::endl;
-        GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
-        return;
-    }
-
-    auto layer = std::make_shared<TestColorLayer>(mComposerClient, mPrimaryDisplay);
-    IComposerClient::Rect coloredSquare({0, 0, mDisplayWidth, mDisplayHeight});
-    layer->setColor(BLUE);
-    layer->setDisplayFrame(coloredSquare);
-    layer->setZOrder(10);
-
-    std::vector<std::shared_ptr<TestLayer>> layers = {layer};
-
-    // expected color for each pixel
-    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
-    fillColorsArea(expectedColors, mDisplayWidth, coloredSquare, BLUE);
-
-    ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
-                                  mDisplayHeight, mPixelFormat, mDataspace);
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-
-    writeLayers(layers);
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-    // if hwc cannot handle and asks for composition change,
-    // just succeed the test
-    if (mReader->mCompositionChanges.size() != 0) {
-        clearCommandReaderState();
-        GTEST_SUCCEED();
-        return;
-    }
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->presentDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
-}
-
-TEST_F(GraphicsComposerReadbackTest, SetLayerBuffer) {
-    if (!mHasReadbackBuffer) {
-        std::cout << "Readback not supported or unsuppported pixelFormat/dataspace or SRGB not a "
-                     "valid color mode"
-                  << std::endl;
-        GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
-        return;
-    }
-
-    ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
-                                  mDisplayHeight, mPixelFormat, mDataspace);
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
-    fillColorsArea(expectedColors, mDisplayWidth, {0, 0, mDisplayWidth, mDisplayHeight / 4}, RED);
-    fillColorsArea(expectedColors, mDisplayWidth,
-                   {0, mDisplayHeight / 4, mDisplayWidth, mDisplayHeight / 2}, GREEN);
-    fillColorsArea(expectedColors, mDisplayWidth,
-                   {0, mDisplayHeight / 2, mDisplayWidth, mDisplayHeight}, BLUE);
-
-    auto layer =
-        std::make_shared<TestBufferLayer>(mComposerClient, mGralloc, mPrimaryDisplay, mDisplayWidth,
-                                          mDisplayHeight, PixelFormat::RGBA_8888);
-    layer->setDisplayFrame({0, 0, mDisplayWidth, mDisplayHeight});
-    layer->setZOrder(10);
-    ASSERT_NO_FATAL_FAILURE(layer->setBuffer(expectedColors));
-
-    std::vector<std::shared_ptr<TestLayer>> layers = {layer};
-
-    writeLayers(layers);
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-
-    if (mReader->mCompositionChanges.size() != 0) {
-        clearCommandReaderState();
-        GTEST_SUCCEED();
-        return;
-    }
-    ASSERT_EQ(0, mReader->mErrors.size());
-
-    mWriter->presentDisplay();
-    execute();
-
-    ASSERT_EQ(0, mReader->mErrors.size());
-
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
-}
-
-TEST_F(GraphicsComposerReadbackTest, SetLayerBufferNoEffect) {
-    if (!mHasReadbackBuffer) {
-        std::cout << "Readback not supported or unsuppported pixelFormat/dataspace or SRGB not a "
-                     "valid color mode"
-                  << std::endl;
-        GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
-        return;
-    }
-
-
-    auto layer = std::make_shared<TestColorLayer>(mComposerClient, mPrimaryDisplay);
-    IComposerClient::Rect coloredSquare({0, 0, mDisplayWidth, mDisplayHeight});
-    layer->setColor(BLUE);
-    layer->setDisplayFrame(coloredSquare);
-    layer->setZOrder(10);
-    layer->write(mWriter);
-
-    // This following buffer call should have no effect
-    PixelFormat format = PixelFormat::RGBA_8888;
-    uint64_t usage =
-            static_cast<uint64_t>(BufferUsage::CPU_READ_OFTEN | BufferUsage::CPU_WRITE_OFTEN);
-    const native_handle_t* bufferHandle =
-            mGralloc->allocate(mDisplayWidth, mDisplayHeight, 1, format, usage);
-    mWriter->setLayerBuffer(0, bufferHandle, -1);
-
-    // expected color for each pixel
-    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
-    fillColorsArea(expectedColors, mDisplayWidth, coloredSquare, BLUE);
-
-    ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
-                                  mDisplayHeight, mPixelFormat, mDataspace);
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-
-    mWriter->validateDisplay();
-    execute();
-
-    if (mReader->mCompositionChanges.size() != 0) {
-        clearCommandReaderState();
-        GTEST_SUCCEED();
-        return;
-    }
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->presentDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
-}
-
-TEST_F(GraphicsComposerReadbackTest, ClientComposition) {
-    if (!mHasReadbackBuffer) {
-        std::cout << "Readback not supported or unsuppported pixelFormat/dataspace or SRGB not a "
-                     "valid color mode"
-                  << std::endl;
-        GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
-        return;
-    }
-
-    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
-    fillColorsArea(expectedColors, mDisplayWidth, {0, 0, mDisplayWidth, mDisplayHeight / 4}, RED);
-    fillColorsArea(expectedColors, mDisplayWidth,
-                   {0, mDisplayHeight / 4, mDisplayWidth, mDisplayHeight / 2}, GREEN);
-    fillColorsArea(expectedColors, mDisplayWidth,
-                   {0, mDisplayHeight / 2, mDisplayWidth, mDisplayHeight}, BLUE);
-
-    auto layer =
-        std::make_shared<TestBufferLayer>(mComposerClient, mGralloc, mPrimaryDisplay, mDisplayWidth,
-                                          mDisplayHeight, PixelFormat::RGBA_FP16);
-    layer->setDisplayFrame({0, 0, mDisplayWidth, mDisplayHeight});
-    layer->setZOrder(10);
-
-    std::vector<std::shared_ptr<TestLayer>> layers = {layer};
-
-    ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
-                                  mDisplayHeight, mPixelFormat, mDataspace);
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-    writeLayers(layers);
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-
-    if (mReader->mCompositionChanges.size() != 0) {
-        ASSERT_EQ(1, mReader->mCompositionChanges.size());
-        ASSERT_EQ(1, mReader->mCompositionChanges[0].second);
-
+        mWriter->selectDisplay(mPrimaryDisplay);
         ASSERT_NO_FATAL_FAILURE(
+                mComposerClient->setColorMode(mPrimaryDisplay, mode, RenderIntent::COLORIMETRIC));
+
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+                mPrimaryDisplay,
+                [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
+                    mHasReadbackBuffer = ReadbackHelper::readbackSupported(tmpPixelFormat,
+                                                                           tmpDataspace, tmpError);
+                    mPixelFormat = tmpPixelFormat;
+                    mDataspace = tmpDataspace;
+                });
+
+        if (!mHasReadbackBuffer) {
+            std::cout << "Readback not supported or unsupported pixelFormat/dataspace" << std::endl;
+            GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+            return;
+        }
+
+        auto layer = std::make_shared<TestColorLayer>(mComposerClient, mPrimaryDisplay);
+        IComposerClient::Rect coloredSquare({0, 0, mDisplayWidth, mDisplayHeight});
+        layer->setColor(BLUE);
+        layer->setDisplayFrame(coloredSquare);
+        layer->setZOrder(10);
+
+        std::vector<std::shared_ptr<TestLayer>> layers = {layer};
+
+        // expected color for each pixel
+        std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth, coloredSquare, BLUE);
+
+        ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
+                                      mDisplayHeight, mPixelFormat, mDataspace);
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+
+        writeLayers(layers);
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->validateDisplay();
+        execute();
+        // if hwc cannot handle and asks for composition change,
+        // just succeed the test
+        if (mReader->mCompositionChanges.size() != 0) {
+            clearCommandReaderState();
+            GTEST_SUCCEED();
+            return;
+        }
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->presentDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
+        mTestRenderEngine->setRenderLayers(layers);
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->drawLayers());
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->checkColorBuffer(expectedColors));
+    }
+}
+
+TEST_P(GraphicsCompositionTest, SetLayerBuffer) {
+    for (ColorMode mode : mTestColorModes) {
+        std::cout << "---Testing Color Mode " << ReadbackHelper::getColorModeString(mode) << "---"
+                  << std::endl;
+        mWriter->selectDisplay(mPrimaryDisplay);
+        ASSERT_NO_FATAL_FAILURE(
+                mComposerClient->setColorMode(mPrimaryDisplay, mode, RenderIntent::COLORIMETRIC));
+
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+                mPrimaryDisplay,
+                [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
+                    mHasReadbackBuffer = ReadbackHelper::readbackSupported(tmpPixelFormat,
+                                                                           tmpDataspace, tmpError);
+                    mPixelFormat = tmpPixelFormat;
+                    mDataspace = tmpDataspace;
+                });
+
+        if (!mHasReadbackBuffer) {
+            std::cout << "Readback not supported or unsupported pixelFormat/dataspace" << std::endl;
+            GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+            return;
+        }
+
+        mWriter->selectDisplay(mPrimaryDisplay);
+
+        ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
+                                      mDisplayHeight, mPixelFormat, mDataspace);
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+        std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {0, 0, mDisplayWidth, mDisplayHeight / 4}, RED);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {0, mDisplayHeight / 4, mDisplayWidth, mDisplayHeight / 2},
+                                       GREEN);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {0, mDisplayHeight / 2, mDisplayWidth, mDisplayHeight},
+                                       BLUE);
+
+        auto layer = std::make_shared<TestBufferLayer>(mComposerClient, mGralloc, mPrimaryDisplay,
+                                                       mDisplayWidth, mDisplayHeight,
+                                                       PixelFormat::RGBA_8888);
+        layer->setDisplayFrame({0, 0, mDisplayWidth, mDisplayHeight});
+        layer->setZOrder(10);
+        layer->setDataspace(ReadbackHelper::getDataspaceForColorMode(mode), mWriter);
+        ASSERT_NO_FATAL_FAILURE(layer->setBuffer(expectedColors));
+
+        std::vector<std::shared_ptr<TestLayer>> layers = {layer};
+
+        writeLayers(layers);
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->validateDisplay();
+        execute();
+
+        if (mReader->mCompositionChanges.size() != 0) {
+            clearCommandReaderState();
+            GTEST_SUCCEED();
+            return;
+        }
+        ASSERT_EQ(0, mReader->mErrors.size());
+
+        mWriter->presentDisplay();
+        execute();
+
+        ASSERT_EQ(0, mReader->mErrors.size());
+
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
+        mTestRenderEngine->setRenderLayers(layers);
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->drawLayers());
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->checkColorBuffer(expectedColors));
+    }
+}
+
+TEST_P(GraphicsCompositionTest, SetLayerBufferNoEffect) {
+    for (ColorMode mode : mTestColorModes) {
+        std::cout << "---Testing Color Mode " << ReadbackHelper::getColorModeString(mode) << "---"
+                  << std::endl;
+        mWriter->selectDisplay(mPrimaryDisplay);
+        ASSERT_NO_FATAL_FAILURE(
+                mComposerClient->setColorMode(mPrimaryDisplay, mode, RenderIntent::COLORIMETRIC));
+
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+                mPrimaryDisplay,
+                [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
+                    mHasReadbackBuffer = ReadbackHelper::readbackSupported(tmpPixelFormat,
+                                                                           tmpDataspace, tmpError);
+                    mPixelFormat = tmpPixelFormat;
+                    mDataspace = tmpDataspace;
+                });
+
+        if (!mHasReadbackBuffer) {
+            std::cout << "Readback not supported or unsupported pixelFormat/dataspace" << std::endl;
+            GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+            return;
+        }
+
+        auto layer = std::make_shared<TestColorLayer>(mComposerClient, mPrimaryDisplay);
+        IComposerClient::Rect coloredSquare({0, 0, mDisplayWidth, mDisplayHeight});
+        layer->setColor(BLUE);
+        layer->setDisplayFrame(coloredSquare);
+        layer->setZOrder(10);
+        layer->write(mWriter);
+
+        // This following buffer call should have no effect
+        uint64_t usage =
+                static_cast<uint64_t>(BufferUsage::CPU_READ_OFTEN | BufferUsage::CPU_WRITE_OFTEN);
+        const native_handle_t* bufferHandle =
+                mGralloc->allocate(mDisplayWidth, mDisplayHeight, 1, PixelFormat::RGBA_8888, usage);
+        mWriter->setLayerBuffer(0, bufferHandle, -1);
+
+        // expected color for each pixel
+        std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth, coloredSquare, BLUE);
+
+        ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
+                                      mDisplayHeight, mPixelFormat, mDataspace);
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+
+        mWriter->validateDisplay();
+        execute();
+
+        if (mReader->mCompositionChanges.size() != 0) {
+            clearCommandReaderState();
+            GTEST_SUCCEED();
+            return;
+        }
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->presentDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
+    }
+}
+
+TEST_P(GraphicsCompositionTest, ClientComposition) {
+    ASSERT_NO_FATAL_FAILURE(
             mComposerClient->setClientTargetSlotCount(mPrimaryDisplay, kClientTargetSlotCount));
 
-        // create client target buffer
-        uint32_t clientStride;
+    for (ColorMode mode : mTestColorModes) {
+        std::cout << "---Testing Color Mode " << ReadbackHelper::getColorModeString(mode) << "---"
+                  << std::endl;
+        mWriter->selectDisplay(mPrimaryDisplay);
+        ASSERT_NO_FATAL_FAILURE(
+                mComposerClient->setColorMode(mPrimaryDisplay, mode, RenderIntent::COLORIMETRIC));
+
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+                mPrimaryDisplay,
+                [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
+                    mHasReadbackBuffer = ReadbackHelper::readbackSupported(tmpPixelFormat,
+                                                                           tmpDataspace, tmpError);
+                    mPixelFormat = tmpPixelFormat;
+                    mDataspace = tmpDataspace;
+                });
+
+        if (!mHasReadbackBuffer) {
+            std::cout << "Readback not supported or unsupported pixelFormat/dataspace" << std::endl;
+            GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+            return;
+        }
+
+        mWriter->selectDisplay(mPrimaryDisplay);
+
+        std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {0, 0, mDisplayWidth, mDisplayHeight / 4}, RED);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {0, mDisplayHeight / 4, mDisplayWidth, mDisplayHeight / 2},
+                                       GREEN);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {0, mDisplayHeight / 2, mDisplayWidth, mDisplayHeight},
+                                       BLUE);
+
+        auto layer = std::make_shared<TestBufferLayer>(mComposerClient, mGralloc, mPrimaryDisplay,
+                                                       mDisplayWidth, mDisplayHeight,
+                                                       PixelFormat::RGBA_FP16);
+        layer->setDisplayFrame({0, 0, mDisplayWidth, mDisplayHeight});
+        layer->setZOrder(10);
+        layer->setDataspace(ReadbackHelper::getDataspaceForColorMode(mode), mWriter);
+
+        std::vector<std::shared_ptr<TestLayer>> layers = {layer};
+
+        ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
+                                      mDisplayHeight, mPixelFormat, mDataspace);
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+        writeLayers(layers);
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->validateDisplay();
+        execute();
+
+        if (mReader->mCompositionChanges.size() != 0) {
+            ASSERT_EQ(1, mReader->mCompositionChanges.size());
+            ASSERT_EQ(1, mReader->mCompositionChanges[0].second);
+
+            PixelFormat clientFormat = PixelFormat::RGBA_8888;
+            uint64_t clientUsage = static_cast<uint64_t>(BufferUsage::CPU_READ_OFTEN |
+                                                         BufferUsage::CPU_WRITE_OFTEN |
+                                                         BufferUsage::COMPOSER_CLIENT_TARGET);
+            Dataspace clientDataspace = ReadbackHelper::getDataspaceForColorMode(mode);
+            IComposerClient::Rect damage{0, 0, mDisplayWidth, mDisplayHeight};
+
+            bool clientTargetSupported = mComposerClient->getClientTargetSupport_2_2(
+                    mPrimaryDisplay, layer->mWidth, layer->mHeight, clientFormat, clientDataspace);
+            // if the client target format is not supported, skip this
+            // configuration
+            if (!clientTargetSupported) {
+                std::cout << "Client target configuration width: " << layer->mWidth
+                          << " height: " << layer->mHeight
+                          << " pixel format: PixelFormat::RGBA_8888 dataspace: "
+                          << ReadbackHelper::getDataspaceString(clientDataspace)
+                          << " unsupported for display" << std::endl;
+                continue;
+            }
+
+            // create client target buffer
+            uint32_t clientStride;
+            const native_handle_t* clientBufferHandle =
+                    mGralloc->allocate(layer->mWidth, layer->mHeight, layer->mLayerCount,
+                                       clientFormat, clientUsage, /*import*/ true, &clientStride);
+            ASSERT_NE(nullptr, clientBufferHandle);
+
+            void* clientBufData =
+                    mGralloc->lock(clientBufferHandle, clientUsage, layer->mAccessRegion, -1);
+
+            ASSERT_NO_FATAL_FAILURE(ReadbackHelper::fillBuffer(layer->mWidth, layer->mHeight,
+                                                               clientStride, clientBufData,
+                                                               clientFormat, expectedColors));
+            int clientFence = mGralloc->unlock(clientBufferHandle);
+            if (clientFence != -1) {
+                sync_wait(clientFence, -1);
+                close(clientFence);
+            }
+
+            mWriter->setClientTarget(0, clientBufferHandle, clientFence, clientDataspace,
+                                     std::vector<IComposerClient::Rect>(1, damage));
+
+            layer->setToClientComposition(mWriter);
+            mWriter->validateDisplay();
+            execute();
+            ASSERT_EQ(0, mReader->mCompositionChanges.size());
+        }
+        ASSERT_EQ(0, mReader->mErrors.size());
+
+        mWriter->presentDisplay();
+        execute();
+
+        ASSERT_EQ(0, mReader->mErrors.size());
+
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
+    }
+}
+
+TEST_P(GraphicsCompositionTest, DeviceAndClientComposition) {
+    ASSERT_NO_FATAL_FAILURE(
+            mComposerClient->setClientTargetSlotCount(mPrimaryDisplay, kClientTargetSlotCount));
+
+    for (ColorMode mode : mTestColorModes) {
+        std::cout << "---Testing Color Mode " << ReadbackHelper::getColorModeString(mode) << "---"
+                  << std::endl;
+        mWriter->selectDisplay(mPrimaryDisplay);
+        ASSERT_NO_FATAL_FAILURE(
+                mComposerClient->setColorMode(mPrimaryDisplay, mode, RenderIntent::COLORIMETRIC));
+
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+                mPrimaryDisplay,
+                [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
+                    mHasReadbackBuffer = ReadbackHelper::readbackSupported(tmpPixelFormat,
+                                                                           tmpDataspace, tmpError);
+                    mPixelFormat = tmpPixelFormat;
+                    mDataspace = tmpDataspace;
+                });
+
+        if (!mHasReadbackBuffer) {
+            std::cout << "Readback not supported or unsupported pixelFormat/dataspace" << std::endl;
+            GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+            return;
+        }
+
+        std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {0, 0, mDisplayWidth, mDisplayHeight / 2}, GREEN);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {0, mDisplayHeight / 2, mDisplayWidth, mDisplayHeight}, RED);
+
+        ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
+                                      mDisplayHeight, mPixelFormat, mDataspace);
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+
+        auto deviceLayer = std::make_shared<TestBufferLayer>(
+                mComposerClient, mGralloc, mPrimaryDisplay, mDisplayWidth, mDisplayHeight / 2,
+                PixelFormat::RGBA_8888);
+        std::vector<IComposerClient::Color> deviceColors(deviceLayer->mWidth *
+                                                         deviceLayer->mHeight);
+        ReadbackHelper::fillColorsArea(deviceColors, deviceLayer->mWidth,
+                                       {0, 0, static_cast<int32_t>(deviceLayer->mWidth),
+                                        static_cast<int32_t>(deviceLayer->mHeight)},
+                                       GREEN);
+        deviceLayer->setDisplayFrame({0, 0, static_cast<int32_t>(deviceLayer->mWidth),
+                                      static_cast<int32_t>(deviceLayer->mHeight)});
+        deviceLayer->setZOrder(10);
+        deviceLayer->setDataspace(ReadbackHelper::getDataspaceForColorMode(mode), mWriter);
+        ASSERT_NO_FATAL_FAILURE(deviceLayer->setBuffer(deviceColors));
+        deviceLayer->write(mWriter);
+
         PixelFormat clientFormat = PixelFormat::RGBA_8888;
         uint64_t clientUsage =
                 static_cast<uint64_t>(BufferUsage::CPU_READ_OFTEN | BufferUsage::CPU_WRITE_OFTEN |
                                       BufferUsage::COMPOSER_CLIENT_TARGET);
+        Dataspace clientDataspace = ReadbackHelper::getDataspaceForColorMode(mode);
+        int32_t clientWidth = mDisplayWidth;
+        int32_t clientHeight = mDisplayHeight / 2;
+
+        bool clientTargetSupported = mComposerClient->getClientTargetSupport_2_2(
+                mPrimaryDisplay, clientWidth, clientHeight, clientFormat, clientDataspace);
+        // if the client target format is not supported, skip this
+        // configuration
+        if (!clientTargetSupported) {
+            std::cout << "Client target configuration width: " << clientWidth
+                      << " height: " << clientHeight
+                      << " pixel format: PixelFormat::RGBA_8888 dataspace: "
+                      << ReadbackHelper::getDataspaceString(clientDataspace)
+                      << " unsupported for display" << std::endl;
+            continue;
+        }
+
+        auto clientLayer = std::make_shared<TestBufferLayer>(
+                mComposerClient, mGralloc, mPrimaryDisplay, clientWidth, clientHeight,
+                PixelFormat::RGBA_FP16, IComposerClient::Composition::DEVICE);
+        IComposerClient::Rect clientFrame = {0, mDisplayHeight / 2, mDisplayWidth, mDisplayHeight};
+        clientLayer->setDisplayFrame(clientFrame);
+        clientLayer->setZOrder(0);
+        clientLayer->write(mWriter);
+        mWriter->validateDisplay();
+        execute();
+
+        if (mReader->mCompositionChanges.size() != 1) {
+            std::cout << "HWC asked for none or more than 1 composition change, skipping"
+                      << std::endl;
+            mReader->mCompositionChanges.clear();
+            continue;
+        }
+        // create client target buffer
+        ASSERT_EQ(1, mReader->mCompositionChanges[0].second);
+        uint32_t clientStride;
         const native_handle_t* clientBufferHandle =
-                mGralloc->allocate(layer->mWidth, layer->mHeight, layer->mLayerCount, clientFormat,
-                                   clientUsage, /*import*/ true, &clientStride);
+                mGralloc->allocate(mDisplayWidth, mDisplayHeight, clientLayer->mLayerCount,
+                                   clientFormat, clientUsage, /*import*/ true, &clientStride);
         ASSERT_NE(nullptr, clientBufferHandle);
 
-        void* clientBufData =
-                mGralloc->lock(clientBufferHandle, clientUsage, layer->mAccessRegion, -1);
+        void* clientBufData = mGralloc->lock(clientBufferHandle, clientUsage,
+                                             {0, 0, mDisplayWidth, mDisplayHeight}, -1);
 
-        ASSERT_NO_FATAL_FAILURE(fillBuffer(layer->mWidth, layer->mHeight, clientStride,
-                                           clientBufData, clientFormat, expectedColors));
+        std::vector<IComposerClient::Color> clientColors(mDisplayWidth * mDisplayHeight);
+        ReadbackHelper::fillColorsArea(clientColors, mDisplayWidth, clientFrame, RED);
+        ASSERT_NO_FATAL_FAILURE(ReadbackHelper::fillBuffer(mDisplayWidth, mDisplayHeight,
+                                                           clientStride, clientBufData,
+                                                           clientFormat, clientColors));
         int clientFence = mGralloc->unlock(clientBufferHandle);
         if (clientFence != -1) {
             sync_wait(clientFence, -1);
             close(clientFence);
         }
 
-        IComposerClient::Rect damage{0, 0, mDisplayWidth, mDisplayHeight};
-        mWriter->setClientTarget(0, clientBufferHandle, clientFence, Dataspace::UNKNOWN,
-                                 std::vector<IComposerClient::Rect>(1, damage));
-
-        layer->setToClientComposition(mWriter);
+        mWriter->setClientTarget(0, clientBufferHandle, clientFence, clientDataspace,
+                                 std::vector<IComposerClient::Rect>(1, clientFrame));
+        clientLayer->setToClientComposition(mWriter);
         mWriter->validateDisplay();
         execute();
         ASSERT_EQ(0, mReader->mCompositionChanges.size());
+        ASSERT_EQ(0, mReader->mErrors.size());
+
+        mWriter->presentDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
     }
-    ASSERT_EQ(0, mReader->mErrors.size());
-
-    mWriter->presentDisplay();
-    execute();
-
-    ASSERT_EQ(0, mReader->mErrors.size());
-
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
 }
 
-TEST_F(GraphicsComposerReadbackTest, DeviceAndClientComposition) {
-    if (!mHasReadbackBuffer) {
-        std::cout << "Readback not supported or unsuppported pixelFormat/dataspace or SRGB not a "
-                     "valid color mode"
+TEST_P(GraphicsCompositionTest, SetLayerDamage) {
+    for (ColorMode mode : mTestColorModes) {
+        std::cout << "---Testing Color Mode " << ReadbackHelper::getColorModeString(mode) << "---"
                   << std::endl;
-        GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
-        return;
+        mWriter->selectDisplay(mPrimaryDisplay);
+        ASSERT_NO_FATAL_FAILURE(
+                mComposerClient->setColorMode(mPrimaryDisplay, mode, RenderIntent::COLORIMETRIC));
+
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+                mPrimaryDisplay,
+                [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
+                    mHasReadbackBuffer = ReadbackHelper::readbackSupported(tmpPixelFormat,
+                                                                           tmpDataspace, tmpError);
+                    mPixelFormat = tmpPixelFormat;
+                    mDataspace = tmpDataspace;
+                });
+
+        if (!mHasReadbackBuffer) {
+            std::cout << "Readback not supported or unsupported pixelFormat/dataspace" << std::endl;
+            GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+            return;
+        }
+
+        mWriter->selectDisplay(mPrimaryDisplay);
+
+        IComposerClient::Rect redRect = {0, 0, mDisplayWidth / 4, mDisplayHeight / 4};
+
+        std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth, redRect, RED);
+
+        auto layer = std::make_shared<TestBufferLayer>(mComposerClient, mGralloc, mPrimaryDisplay,
+                                                       mDisplayWidth, mDisplayHeight,
+                                                       PixelFormat::RGBA_8888);
+        layer->setDisplayFrame({0, 0, mDisplayWidth, mDisplayHeight});
+        layer->setZOrder(10);
+        layer->setDataspace(ReadbackHelper::getDataspaceForColorMode(mode), mWriter);
+        ASSERT_NO_FATAL_FAILURE(layer->setBuffer(expectedColors));
+
+        std::vector<std::shared_ptr<TestLayer>> layers = {layer};
+
+        ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
+                                      mDisplayHeight, mPixelFormat, mDataspace);
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+
+        writeLayers(layers);
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->validateDisplay();
+        execute();
+        if (mReader->mCompositionChanges.size() != 0) {
+            clearCommandReaderState();
+            GTEST_SUCCEED();
+            return;
+        }
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->presentDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
+
+        // update surface damage and recheck
+        redRect = {mDisplayWidth / 4, mDisplayHeight / 4, mDisplayWidth / 2, mDisplayHeight / 2};
+        ReadbackHelper::clearColors(expectedColors, mDisplayWidth, mDisplayHeight, mDisplayWidth);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth, redRect, RED);
+
+        ASSERT_NO_FATAL_FAILURE(layer->fillBuffer(expectedColors));
+        layer->setSurfaceDamage(std::vector<IComposerClient::Rect>(
+                1, {0, 0, mDisplayWidth / 2, mDisplayWidth / 2}));
+
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+
+        writeLayers(layers);
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->validateDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+        ASSERT_EQ(0, mReader->mCompositionChanges.size());
+        mWriter->presentDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
     }
-
-    ASSERT_NO_FATAL_FAILURE(
-        mComposerClient->setClientTargetSlotCount(mPrimaryDisplay, kClientTargetSlotCount));
-
-    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
-    fillColorsArea(expectedColors, mDisplayWidth, {0, 0, mDisplayWidth, mDisplayHeight / 2}, GREEN);
-    fillColorsArea(expectedColors, mDisplayWidth,
-                   {0, mDisplayHeight / 2, mDisplayWidth, mDisplayHeight}, RED);
-
-    ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
-                                  mDisplayHeight, mPixelFormat, mDataspace);
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-
-    auto deviceLayer =
-        std::make_shared<TestBufferLayer>(mComposerClient, mGralloc, mPrimaryDisplay, mDisplayWidth,
-                                          mDisplayHeight / 2, PixelFormat::RGBA_8888);
-    std::vector<IComposerClient::Color> deviceColors(deviceLayer->mWidth * deviceLayer->mHeight);
-    fillColorsArea(deviceColors, deviceLayer->mWidth,
-                   {0, 0, static_cast<int32_t>(deviceLayer->mWidth),
-                    static_cast<int32_t>(deviceLayer->mHeight)},
-                   GREEN);
-    deviceLayer->setDisplayFrame({0, 0, static_cast<int32_t>(deviceLayer->mWidth),
-                                  static_cast<int32_t>(deviceLayer->mHeight)});
-    deviceLayer->setZOrder(10);
-    ASSERT_NO_FATAL_FAILURE(deviceLayer->setBuffer(deviceColors));
-    deviceLayer->write(mWriter);
-
-    auto clientLayer = std::make_shared<TestBufferLayer>(
-        mComposerClient, mGralloc, mPrimaryDisplay, mDisplayWidth, mDisplayHeight / 2,
-        PixelFormat::RGBA_8888, IComposerClient::Composition::CLIENT);
-    IComposerClient::Rect clientFrame = {0, mDisplayHeight / 2, mDisplayWidth, mDisplayHeight};
-    clientLayer->setDisplayFrame(clientFrame);
-    clientLayer->setZOrder(0);
-    clientLayer->write(mWriter);
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-
-    uint64_t clientUsage =
-            static_cast<uint64_t>(BufferUsage::CPU_READ_OFTEN | BufferUsage::CPU_WRITE_OFTEN |
-                                  BufferUsage::COMPOSER_CLIENT_TARGET);
-    uint32_t clientStride;
-    const native_handle_t* clientBufferHandle =
-            mGralloc->allocate(mDisplayWidth, mDisplayHeight, 1, PixelFormat::RGBA_8888,
-                               clientUsage, /*import*/ true, &clientStride);
-    ASSERT_NE(nullptr, clientBufferHandle);
-
-    AccessRegion clientAccessRegion;
-    clientAccessRegion.left = 0;
-    clientAccessRegion.top = 0;
-    clientAccessRegion.width = mDisplayWidth;
-    clientAccessRegion.height = mDisplayHeight;
-    void* clientData = mGralloc->lock(clientBufferHandle, clientUsage, clientAccessRegion, -1);
-    std::vector<IComposerClient::Color> clientColors(mDisplayWidth * mDisplayHeight);
-    fillColorsArea(clientColors, mDisplayWidth, clientFrame, RED);
-    ASSERT_NO_FATAL_FAILURE(fillBuffer(mDisplayWidth, mDisplayHeight, clientStride, clientData,
-                                       PixelFormat::RGBA_8888, clientColors));
-    int clientFence = mGralloc->unlock(clientBufferHandle);
-    if (clientFence != -1) {
-        sync_wait(clientFence, -1);
-        close(clientFence);
-    }
-
-    mWriter->setClientTarget(0, clientBufferHandle, clientFence, Dataspace::UNKNOWN,
-                             std::vector<IComposerClient::Rect>(1, clientFrame));
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-    if (mReader->mCompositionChanges.size() != 0) {
-        clearCommandReaderState();
-        GTEST_SUCCEED();
-        return;
-    }
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->presentDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
 }
 
-TEST_F(GraphicsComposerReadbackTest, SetLayerDamage) {
-    if (!mHasReadbackBuffer) {
-        std::cout << "Readback not supported or unsuppported pixelFormat/dataspace or SRGB not a "
-                     "valid color mode"
+TEST_P(GraphicsCompositionTest, SetLayerPlaneAlpha) {
+    for (ColorMode mode : mTestColorModes) {
+        std::cout << "---Testing Color Mode " << ReadbackHelper::getColorModeString(mode) << "---"
                   << std::endl;
-        GTEST_SUCCEED() << "Readback not supported or unsupported pixelformat/dataspace";
-        return;
+        mWriter->selectDisplay(mPrimaryDisplay);
+        ASSERT_NO_FATAL_FAILURE(
+                mComposerClient->setColorMode(mPrimaryDisplay, mode, RenderIntent::COLORIMETRIC));
+
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+                mPrimaryDisplay,
+                [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
+                    mHasReadbackBuffer = ReadbackHelper::readbackSupported(tmpPixelFormat,
+                                                                           tmpDataspace, tmpError);
+                    mPixelFormat = tmpPixelFormat;
+                    mDataspace = tmpDataspace;
+                });
+
+        if (!mHasReadbackBuffer) {
+            std::cout << "Readback not supported or unsupported pixelFormat/dataspace" << std::endl;
+            GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+            return;
+        }
+
+        auto layer = std::make_shared<TestColorLayer>(mComposerClient, mPrimaryDisplay);
+        layer->setColor(RED);
+        layer->setDisplayFrame({0, 0, mDisplayWidth, mDisplayHeight});
+        layer->setZOrder(10);
+        layer->setAlpha(0);
+        layer->setBlendMode(IComposerClient::BlendMode::PREMULTIPLIED);
+
+        std::vector<std::shared_ptr<TestLayer>> layers = {layer};
+
+        ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
+                                      mDisplayHeight, mPixelFormat, mDataspace);
+
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+
+        writeLayers(layers);
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->validateDisplay();
+        execute();
+        if (mReader->mCompositionChanges.size() != 0) {
+            clearCommandReaderState();
+            GTEST_SUCCEED();
+            return;
+        }
+        ASSERT_EQ(0, mReader->mErrors.size());
+
+        mWriter->presentDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+
+        std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
+        mTestRenderEngine->setRenderLayers(layers);
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->drawLayers());
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->checkColorBuffer(expectedColors));
     }
-
-    IComposerClient::Rect redRect = {0, 0, mDisplayWidth / 4, mDisplayHeight / 4};
-
-    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
-    fillColorsArea(expectedColors, mDisplayWidth, redRect, RED);
-
-    auto layer =
-        std::make_shared<TestBufferLayer>(mComposerClient, mGralloc, mPrimaryDisplay, mDisplayWidth,
-                                          mDisplayHeight, PixelFormat::RGBA_8888);
-    layer->setDisplayFrame({0, 0, mDisplayWidth, mDisplayHeight});
-    layer->setZOrder(10);
-    ASSERT_NO_FATAL_FAILURE(layer->setBuffer(expectedColors));
-
-    std::vector<std::shared_ptr<TestLayer>> layers = {layer};
-
-    ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
-                                  mDisplayHeight, mPixelFormat, mDataspace);
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-
-    writeLayers(layers);
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-    if (mReader->mCompositionChanges.size() != 0) {
-        clearCommandReaderState();
-        GTEST_SUCCEED();
-        return;
-    }
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->presentDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
-
-    // update surface damage and recheck
-    redRect = {mDisplayWidth / 4, mDisplayHeight / 4, mDisplayWidth / 2, mDisplayHeight / 2};
-    clearColors(expectedColors, mDisplayWidth, mDisplayHeight);
-    fillColorsArea(expectedColors, mDisplayWidth, redRect, RED);
-
-    ASSERT_NO_FATAL_FAILURE(layer->fillBuffer(expectedColors));
-    layer->setSurfaceDamage(
-        std::vector<IComposerClient::Rect>(1, {0, 0, mDisplayWidth / 2, mDisplayWidth / 2}));
-
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-
-    writeLayers(layers);
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-    ASSERT_EQ(0, mReader->mCompositionChanges.size());
-    mWriter->presentDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
 }
 
-TEST_F(GraphicsComposerReadbackTest, SetLayerPlaneAlpha) {
-    if (!mHasReadbackBuffer) {
-        std::cout << "Readback not supported or unsuppported pixelFormat/dataspace or SRGB not a "
-                     "valid color mode"
+TEST_P(GraphicsCompositionTest, SetLayerSourceCrop) {
+    for (ColorMode mode : mTestColorModes) {
+        std::cout << "---Testing Color Mode " << ReadbackHelper::getColorModeString(mode) << "---"
                   << std::endl;
-        GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
-        return;
+        mWriter->selectDisplay(mPrimaryDisplay);
+        ASSERT_NO_FATAL_FAILURE(
+                mComposerClient->setColorMode(mPrimaryDisplay, mode, RenderIntent::COLORIMETRIC));
+
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+                mPrimaryDisplay,
+                [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
+                    mHasReadbackBuffer = ReadbackHelper::readbackSupported(tmpPixelFormat,
+                                                                           tmpDataspace, tmpError);
+                    mPixelFormat = tmpPixelFormat;
+                    mDataspace = tmpDataspace;
+                });
+
+        if (!mHasReadbackBuffer) {
+            std::cout << "Readback not supported or unsupported pixelFormat/dataspace" << std::endl;
+            GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+            return;
+        }
+
+        mWriter->selectDisplay(mPrimaryDisplay);
+
+        std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {0, 0, mDisplayWidth, mDisplayHeight / 4}, RED);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {0, mDisplayHeight / 2, mDisplayWidth, mDisplayHeight},
+                                       BLUE);
+
+        auto layer = std::make_shared<TestBufferLayer>(mComposerClient, mGralloc, mPrimaryDisplay,
+                                                       mDisplayWidth, mDisplayHeight,
+                                                       PixelFormat::RGBA_8888);
+        layer->setDisplayFrame({0, 0, mDisplayWidth, mDisplayHeight});
+        layer->setZOrder(10);
+        layer->setDataspace(ReadbackHelper::getDataspaceForColorMode(mode), mWriter);
+        layer->setSourceCrop({0, static_cast<float>(mDisplayHeight / 2),
+                              static_cast<float>(mDisplayWidth),
+                              static_cast<float>(mDisplayHeight)});
+        ASSERT_NO_FATAL_FAILURE(layer->setBuffer(expectedColors));
+
+        std::vector<std::shared_ptr<TestLayer>> layers = {layer};
+
+        // update expected colors to match crop
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {0, 0, mDisplayWidth, mDisplayHeight}, BLUE);
+        ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
+                                      mDisplayHeight, mPixelFormat, mDataspace);
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+        writeLayers(layers);
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->validateDisplay();
+        execute();
+        if (mReader->mCompositionChanges.size() != 0) {
+            clearCommandReaderState();
+            GTEST_SUCCEED();
+            return;
+        }
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->presentDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
+        mTestRenderEngine->setRenderLayers(layers);
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->drawLayers());
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->checkColorBuffer(expectedColors));
     }
-
-    auto layer = std::make_shared<TestColorLayer>(mComposerClient, mPrimaryDisplay);
-    layer->setColor(RED);
-    layer->setDisplayFrame({0, 0, mDisplayWidth, mDisplayHeight});
-    layer->setZOrder(10);
-    layer->setAlpha(0);
-    layer->setBlendMode(IComposerClient::BlendMode::PREMULTIPLIED);
-
-    std::vector<std::shared_ptr<TestLayer>> layers = {layer};
-
-    ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
-                                  mDisplayHeight, mPixelFormat, mDataspace);
-
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-
-    writeLayers(layers);
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-    if (mReader->mCompositionChanges.size() != 0) {
-        clearCommandReaderState();
-        GTEST_SUCCEED();
-        return;
-    }
-    ASSERT_EQ(0, mReader->mErrors.size());
-
-    mWriter->presentDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-
-    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
-
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
 }
 
-TEST_F(GraphicsComposerReadbackTest, SetLayerSourceCrop) {
-    if (!mHasReadbackBuffer) {
-        std::cout << "Readback not supported or unsuppported pixelFormat/dataspace or SRGB not a "
-                     "valid color mode"
+TEST_P(GraphicsCompositionTest, SetLayerZOrder) {
+    for (ColorMode mode : mTestColorModes) {
+        std::cout << "---Testing Color Mode " << ReadbackHelper::getColorModeString(mode) << "---"
                   << std::endl;
-        GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
-        return;
+        mWriter->selectDisplay(mPrimaryDisplay);
+        ASSERT_NO_FATAL_FAILURE(
+                mComposerClient->setColorMode(mPrimaryDisplay, mode, RenderIntent::COLORIMETRIC));
+
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+                mPrimaryDisplay,
+                [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
+                    mHasReadbackBuffer = ReadbackHelper::readbackSupported(tmpPixelFormat,
+                                                                           tmpDataspace, tmpError);
+                    mPixelFormat = tmpPixelFormat;
+                    mDataspace = tmpDataspace;
+                });
+
+        if (!mHasReadbackBuffer) {
+            std::cout << "Readback not supported or unsupported pixelFormat/dataspace" << std::endl;
+            GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+            return;
+        }
+
+        IComposerClient::Rect redRect = {0, 0, mDisplayWidth, mDisplayHeight / 2};
+        IComposerClient::Rect blueRect = {0, mDisplayHeight / 4, mDisplayWidth, mDisplayHeight};
+        auto redLayer = std::make_shared<TestColorLayer>(mComposerClient, mPrimaryDisplay);
+        redLayer->setColor(RED);
+        redLayer->setDisplayFrame(redRect);
+
+        auto blueLayer = std::make_shared<TestColorLayer>(mComposerClient, mPrimaryDisplay);
+        blueLayer->setColor(BLUE);
+        blueLayer->setDisplayFrame(blueRect);
+        blueLayer->setZOrder(5);
+
+        std::vector<std::shared_ptr<TestLayer>> layers = {redLayer, blueLayer};
+        std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+
+        // red in front of blue
+        redLayer->setZOrder(10);
+
+        // fill blue first so that red will overwrite on overlap
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth, blueRect, BLUE);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth, redRect, RED);
+
+        ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
+                                      mDisplayHeight, mPixelFormat, mDataspace);
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+
+        writeLayers(layers);
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->validateDisplay();
+        execute();
+        if (mReader->mCompositionChanges.size() != 0) {
+            clearCommandReaderState();
+            GTEST_SUCCEED();
+            return;
+        }
+        mWriter->presentDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
+
+        redLayer->setZOrder(1);
+        ReadbackHelper::clearColors(expectedColors, mDisplayWidth, mDisplayHeight, mDisplayWidth);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth, redRect, RED);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth, blueRect, BLUE);
+
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+
+        writeLayers(layers);
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->validateDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mCompositionChanges.size());
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->presentDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
+        mTestRenderEngine->setRenderLayers(layers);
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->drawLayers());
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->checkColorBuffer(expectedColors));
     }
-
-    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
-    fillColorsArea(expectedColors, mDisplayWidth, {0, 0, mDisplayWidth, mDisplayHeight / 4}, RED);
-    fillColorsArea(expectedColors, mDisplayWidth,
-                   {0, mDisplayHeight / 2, mDisplayWidth, mDisplayHeight}, BLUE);
-
-    auto layer =
-        std::make_shared<TestBufferLayer>(mComposerClient, mGralloc, mPrimaryDisplay, mDisplayWidth,
-                                          mDisplayHeight, PixelFormat::RGBA_8888);
-    layer->setDisplayFrame({0, 0, mDisplayWidth, mDisplayHeight});
-    layer->setZOrder(10);
-    layer->setSourceCrop({0, static_cast<float>(mDisplayHeight / 2),
-                          static_cast<float>(mDisplayWidth), static_cast<float>(mDisplayHeight)});
-    ASSERT_NO_FATAL_FAILURE(layer->setBuffer(expectedColors));
-
-    std::vector<std::shared_ptr<TestLayer>> layers = {layer};
-
-    // update expected colors to match crop
-    fillColorsArea(expectedColors, mDisplayWidth, {0, 0, mDisplayWidth, mDisplayHeight}, BLUE);
-    ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
-                                  mDisplayHeight, mPixelFormat, mDataspace);
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-    writeLayers(layers);
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-    if (mReader->mCompositionChanges.size() != 0) {
-        clearCommandReaderState();
-        GTEST_SUCCEED();
-        return;
-    }
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->presentDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
 }
 
-TEST_F(GraphicsComposerReadbackTest, SetLayerZOrder) {
-    if (!mHasReadbackBuffer) {
-        std::cout << "Readback not supported or unsuppported pixelFormat/dataspace or SRGB not a "
-                     "valid color mode"
-                  << std::endl;
-        GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
-        return;
-    }
-
-    IComposerClient::Rect redRect = {0, 0, mDisplayWidth, mDisplayHeight / 2};
-    IComposerClient::Rect blueRect = {0, mDisplayHeight / 4, mDisplayWidth, mDisplayHeight};
-    auto redLayer = std::make_shared<TestColorLayer>(mComposerClient, mPrimaryDisplay);
-    redLayer->setColor(RED);
-    redLayer->setDisplayFrame(redRect);
-
-    auto blueLayer = std::make_shared<TestColorLayer>(mComposerClient, mPrimaryDisplay);
-    blueLayer->setColor(BLUE);
-    blueLayer->setDisplayFrame(blueRect);
-    blueLayer->setZOrder(5);
-
-    std::vector<std::shared_ptr<TestLayer>> layers = {redLayer, blueLayer};
-    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
-
-    // red in front of blue
-    redLayer->setZOrder(10);
-
-    // fill blue first so that red will overwrite on overlap
-    fillColorsArea(expectedColors, mDisplayWidth, blueRect, BLUE);
-    fillColorsArea(expectedColors, mDisplayWidth, redRect, RED);
-
-    ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
-                                  mDisplayHeight, mPixelFormat, mDataspace);
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-
-    writeLayers(layers);
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-    if (mReader->mCompositionChanges.size() != 0) {
-        clearCommandReaderState();
-        GTEST_SUCCEED();
-        return;
-    }
-    mWriter->presentDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
-
-    redLayer->setZOrder(1);
-    clearColors(expectedColors, mDisplayWidth, mDisplayHeight);
-    fillColorsArea(expectedColors, mDisplayWidth, redRect, RED);
-    fillColorsArea(expectedColors, mDisplayWidth, blueRect, BLUE);
-
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-
-    writeLayers(layers);
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mCompositionChanges.size());
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->presentDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
-}
-
-class GraphicsComposerBlendModeReadbackTest : public GraphicsComposerReadbackTest,
-                                              public ::testing::WithParamInterface<float> {
-   public:
+class GraphicsBlendModeCompositionTest
+    : public GraphicsCompositionTestBase,
+      public testing::WithParamInterface<std::tuple<string, string>> {
+  public:
     void SetUp() override {
-        GraphicsComposerReadbackTest::SetUp();
+        SetUpBase(std::get<0>(GetParam()));
+        mTestColorModes = {ColorMode::SRGB};  // TODO: add more color mode support
         mBackgroundColor = BLACK;
         mTopLayerColor = RED;
     }
 
-    void TearDown() override { GraphicsComposerReadbackTest::TearDown(); }
-
     void setBackgroundColor(IComposerClient::Color color) { mBackgroundColor = color; }
 
     void setTopLayerColor(IComposerClient::Color color) { mTopLayerColor = color; }
@@ -1029,8 +948,8 @@
     void setUpLayers(IComposerClient::BlendMode blendMode) {
         mLayers.clear();
         std::vector<IComposerClient::Color> topLayerPixelColors(mDisplayWidth * mDisplayHeight);
-        fillColorsArea(topLayerPixelColors, mDisplayWidth, {0, 0, mDisplayWidth, mDisplayHeight},
-                       mTopLayerColor);
+        ReadbackHelper::fillColorsArea(topLayerPixelColors, mDisplayWidth,
+                                       {0, 0, mDisplayWidth, mDisplayHeight}, mTopLayerColor);
 
         auto backgroundLayer = std::make_shared<TestColorLayer>(mComposerClient, mPrimaryDisplay);
         backgroundLayer->setDisplayFrame({0, 0, mDisplayWidth, mDisplayHeight});
@@ -1042,10 +961,11 @@
                                                        PixelFormat::RGBA_8888);
         layer->setDisplayFrame({0, 0, mDisplayWidth, mDisplayHeight});
         layer->setZOrder(10);
+        layer->setDataspace(Dataspace::UNKNOWN, mWriter);
         ASSERT_NO_FATAL_FAILURE(layer->setBuffer(topLayerPixelColors));
 
         layer->setBlendMode(blendMode);
-        layer->setAlpha(GetParam());
+        layer->setAlpha(std::stof(std::get<1>(GetParam())));
 
         mLayers.push_back(backgroundLayer);
         mLayers.push_back(layer);
@@ -1053,7 +973,7 @@
 
     void setExpectedColors(std::vector<IComposerClient::Color>& expectedColors) {
         ASSERT_EQ(2, mLayers.size());
-        clearColors(expectedColors, mDisplayWidth, mDisplayHeight);
+        ReadbackHelper::clearColors(expectedColors, mDisplayWidth, mDisplayHeight, mDisplayWidth);
 
         auto layer = mLayers[1];
         IComposerClient::BlendMode blendMode = layer->mBlendMode;
@@ -1091,122 +1011,178 @@
     IComposerClient::Color mTopLayerColor;
 };
 
-TEST_P(GraphicsComposerBlendModeReadbackTest, None) {
-    if (!mHasReadbackBuffer) {
-        std::cout << "Readback not supported or unsuppported pixelFormat/dataspace or SRGB not a "
-                     "valid color mode"
+// TODO(b/145557764): Re-enable after the bug is fixed.
+TEST_P(GraphicsBlendModeCompositionTest, DISABLED_None) {
+    for (ColorMode mode : mTestColorModes) {
+        std::cout << "---Testing Color Mode " << ReadbackHelper::getColorModeString(mode) << "---"
                   << std::endl;
-        GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
-        return;
+        mWriter->selectDisplay(mPrimaryDisplay);
+        ASSERT_NO_FATAL_FAILURE(
+                mComposerClient->setColorMode(mPrimaryDisplay, mode, RenderIntent::COLORIMETRIC));
+
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+                mPrimaryDisplay,
+                [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
+                    mHasReadbackBuffer = ReadbackHelper::readbackSupported(tmpPixelFormat,
+                                                                           tmpDataspace, tmpError);
+                    mPixelFormat = tmpPixelFormat;
+                    mDataspace = tmpDataspace;
+                });
+
+        if (!mHasReadbackBuffer) {
+            std::cout << "Readback not supported or unsupported pixelFormat/dataspace" << std::endl;
+            GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+            return;
+        }
+
+        mWriter->selectDisplay(mPrimaryDisplay);
+
+        std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+
+        setBackgroundColor(BLACK);
+        setTopLayerColor(TRANSLUCENT_RED);
+        setUpLayers(IComposerClient::BlendMode::NONE);
+        setExpectedColors(expectedColors);
+
+        ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
+                                      mDisplayHeight, mPixelFormat, mDataspace);
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+        writeLayers(mLayers);
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->validateDisplay();
+        execute();
+        if (mReader->mCompositionChanges.size() != 0) {
+            clearCommandReaderState();
+            GTEST_SUCCEED();
+            return;
+        }
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->presentDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
+        mTestRenderEngine->setRenderLayers(mLayers);
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->drawLayers());
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->checkColorBuffer(expectedColors));
     }
-
-    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
-
-    setBackgroundColor(BLACK);
-    setTopLayerColor(TRANSLUCENT_RED);
-    setUpLayers(IComposerClient::BlendMode::NONE);
-    setExpectedColors(expectedColors);
-
-    ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
-                                  mDisplayHeight, mPixelFormat, mDataspace);
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-    writeLayers(mLayers);
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-    if (mReader->mCompositionChanges.size() != 0) {
-        clearCommandReaderState();
-        GTEST_SUCCEED();
-        return;
-    }
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->presentDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
 }
 
 // TODO: bug 116865056: Readback returns (245, 0, 0) for layer plane
 // alpha of .2, expected 10.2
-TEST_P(GraphicsComposerBlendModeReadbackTest, DISABLED_Coverage) {
-    if (!mHasReadbackBuffer) {
-        std::cout << "Readback not supported or unsuppported pixelFormat/dataspace or SRGB not a "
-                     "valid color mode"
+TEST_P(GraphicsBlendModeCompositionTest, DISABLED_Coverage) {
+    for (ColorMode mode : mTestColorModes) {
+        std::cout << "---Testing Color Mode " << ReadbackHelper::getColorModeString(mode) << "---"
                   << std::endl;
-        GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
-        return;
+        mWriter->selectDisplay(mPrimaryDisplay);
+        ASSERT_NO_FATAL_FAILURE(
+                mComposerClient->setColorMode(mPrimaryDisplay, mode, RenderIntent::COLORIMETRIC));
+
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+                mPrimaryDisplay,
+                [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
+                    mHasReadbackBuffer = ReadbackHelper::readbackSupported(tmpPixelFormat,
+                                                                           tmpDataspace, tmpError);
+                    mPixelFormat = tmpPixelFormat;
+                    mDataspace = tmpDataspace;
+                });
+
+        if (!mHasReadbackBuffer) {
+            std::cout << "Readback not supported or unsupported pixelFormat/dataspace" << std::endl;
+            GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+            return;
+        }
+
+        mWriter->selectDisplay(mPrimaryDisplay);
+
+        std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+
+        setBackgroundColor(BLACK);
+        setTopLayerColor(TRANSLUCENT_RED);
+
+        setUpLayers(IComposerClient::BlendMode::COVERAGE);
+        setExpectedColors(expectedColors);
+
+        ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
+                                      mDisplayHeight, mPixelFormat, mDataspace);
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+        writeLayers(mLayers);
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->validateDisplay();
+        execute();
+        if (mReader->mCompositionChanges.size() != 0) {
+            clearCommandReaderState();
+            GTEST_SUCCEED();
+            return;
+        }
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->presentDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
     }
-
-    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
-
-    setBackgroundColor(BLACK);
-    setTopLayerColor(TRANSLUCENT_RED);
-
-    setUpLayers(IComposerClient::BlendMode::COVERAGE);
-    setExpectedColors(expectedColors);
-
-    ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
-                                  mDisplayHeight, mPixelFormat, mDataspace);
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-    writeLayers(mLayers);
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-    if (mReader->mCompositionChanges.size() != 0) {
-        clearCommandReaderState();
-        GTEST_SUCCEED();
-        return;
-    }
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->presentDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
 }
 
-TEST_P(GraphicsComposerBlendModeReadbackTest, Premultiplied) {
-    if (!mHasReadbackBuffer) {
-        std::cout << "Readback not supported or unsuppported pixelFormat/dataspace or SRGB not a "
-                     "valid color mode"
+TEST_P(GraphicsBlendModeCompositionTest, Premultiplied) {
+    for (ColorMode mode : mTestColorModes) {
+        std::cout << "---Testing Color Mode " << ReadbackHelper::getColorModeString(mode) << "---"
                   << std::endl;
-        GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
-        return;
+        mWriter->selectDisplay(mPrimaryDisplay);
+        ASSERT_NO_FATAL_FAILURE(
+                mComposerClient->setColorMode(mPrimaryDisplay, mode, RenderIntent::COLORIMETRIC));
+
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+                mPrimaryDisplay,
+                [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
+                    mHasReadbackBuffer = ReadbackHelper::readbackSupported(tmpPixelFormat,
+                                                                           tmpDataspace, tmpError);
+                    mPixelFormat = tmpPixelFormat;
+                    mDataspace = tmpDataspace;
+                });
+
+        if (!mHasReadbackBuffer) {
+            std::cout << "Readback not supported or unsupported pixelFormat/dataspace" << std::endl;
+            GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+            return;
+        }
+        mWriter->selectDisplay(mPrimaryDisplay);
+
+        std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+
+        setBackgroundColor(BLACK);
+        setTopLayerColor(TRANSLUCENT_RED);
+        setUpLayers(IComposerClient::BlendMode::PREMULTIPLIED);
+        setExpectedColors(expectedColors);
+
+        ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
+                                      mDisplayHeight, mPixelFormat, mDataspace);
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+        writeLayers(mLayers);
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->validateDisplay();
+        execute();
+        if (mReader->mCompositionChanges.size() != 0) {
+            clearCommandReaderState();
+            GTEST_SUCCEED();
+            return;
+        }
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->presentDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
+        mTestRenderEngine->setRenderLayers(mLayers);
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->drawLayers());
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->checkColorBuffer(expectedColors));
     }
-
-    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
-
-    setBackgroundColor(BLACK);
-    setTopLayerColor(TRANSLUCENT_RED);
-    setUpLayers(IComposerClient::BlendMode::PREMULTIPLIED);
-    setExpectedColors(expectedColors);
-
-    ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
-                                  mDisplayHeight, mPixelFormat, mDataspace);
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-    writeLayers(mLayers);
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-    if (mReader->mCompositionChanges.size() != 0) {
-        clearCommandReaderState();
-        GTEST_SUCCEED();
-        return;
-    }
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->presentDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
 }
 
-INSTANTIATE_TEST_CASE_P(BlendModeTest, GraphicsComposerBlendModeReadbackTest,
-                        ::testing::Values(.2, 1.0));
-
-class GraphicsComposerTransformReadbackTest : public GraphicsComposerReadbackTest {
-   protected:
+class GraphicsTransformCompositionTest : public GraphicsCompositionTest {
+  protected:
     void SetUp() override {
-        GraphicsComposerReadbackTest::SetUp();
+        GraphicsCompositionTest::SetUp();
+
+        mWriter->selectDisplay(mPrimaryDisplay);
 
         auto backgroundLayer = std::make_shared<TestColorLayer>(mComposerClient, mPrimaryDisplay);
         backgroundLayer->setColor({0, 0, 0, 0});
@@ -1225,8 +1201,8 @@
         mLayer->setZOrder(10);
 
         std::vector<IComposerClient::Color> baseColors(mSideLength * mSideLength);
-        fillColorsArea(baseColors, mSideLength, redRect, RED);
-        fillColorsArea(baseColors, mSideLength, blueRect, BLUE);
+        ReadbackHelper::fillColorsArea(baseColors, mSideLength, redRect, RED);
+        ReadbackHelper::fillColorsArea(baseColors, mSideLength, blueRect, BLUE);
         ASSERT_NO_FATAL_FAILURE(mLayer->setBuffer(baseColors));
 
         mLayers = {backgroundLayer, mLayer};
@@ -1239,112 +1215,189 @@
     int mSideLength;
 };
 
-TEST_F(GraphicsComposerTransformReadbackTest, FLIP_H) {
-    if (!mHasReadbackBuffer) {
-        std::cout << "Readback not supported or unsuppported pixelFormat/dataspace or SRGB not a "
-                     "valid color mode"
+TEST_P(GraphicsTransformCompositionTest, FLIP_H) {
+    for (ColorMode mode : mTestColorModes) {
+        std::cout << "---Testing Color Mode " << ReadbackHelper::getColorModeString(mode) << "---"
                   << std::endl;
-        GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
-        return;
-    }
-    ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
-                                  mDisplayHeight, mPixelFormat, mDataspace);
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-    mLayer->setTransform(Transform::FLIP_H);
-    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
-    fillColorsArea(expectedColors, mDisplayWidth,
-                   {mSideLength / 2, 0, mSideLength, mSideLength / 2}, RED);
-    fillColorsArea(expectedColors, mDisplayWidth,
-                   {0, mSideLength / 2, mSideLength / 2, mSideLength}, BLUE);
+        mWriter->selectDisplay(mPrimaryDisplay);
+        ASSERT_NO_FATAL_FAILURE(
+                mComposerClient->setColorMode(mPrimaryDisplay, mode, RenderIntent::COLORIMETRIC));
 
-    writeLayers(mLayers);
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-    if (mReader->mCompositionChanges.size() != 0) {
-        clearCommandReaderState();
-        GTEST_SUCCEED();
-        return;
-    }
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->presentDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+                mPrimaryDisplay,
+                [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
+                    mHasReadbackBuffer = ReadbackHelper::readbackSupported(tmpPixelFormat,
+                                                                           tmpDataspace, tmpError);
+                    mPixelFormat = tmpPixelFormat;
+                    mDataspace = tmpDataspace;
+                });
 
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
+        if (!mHasReadbackBuffer) {
+            std::cout << "Readback not supported or unsupported pixelFormat/dataspace" << std::endl;
+            GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+            return;
+        }
+        ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
+                                      mDisplayHeight, mPixelFormat, mDataspace);
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+        mLayer->setTransform(Transform::FLIP_H);
+        mLayer->setDataspace(ReadbackHelper::getDataspaceForColorMode(mode), mWriter);
+
+        std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {mSideLength / 2, 0, mSideLength, mSideLength / 2}, RED);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {0, mSideLength / 2, mSideLength / 2, mSideLength}, BLUE);
+
+        writeLayers(mLayers);
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->validateDisplay();
+        execute();
+        if (mReader->mCompositionChanges.size() != 0) {
+            clearCommandReaderState();
+            GTEST_SUCCEED();
+            return;
+        }
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->presentDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
+        mTestRenderEngine->setRenderLayers(mLayers);
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->drawLayers());
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->checkColorBuffer(expectedColors));
+    }
 }
 
-TEST_F(GraphicsComposerTransformReadbackTest, FLIP_V) {
-    if (!mHasReadbackBuffer) {
-        std::cout << "Readback not supported or unsuppported pixelFormat/dataspace or SRGB not a "
-                     "valid color mode"
+TEST_P(GraphicsTransformCompositionTest, FLIP_V) {
+    for (ColorMode mode : mTestColorModes) {
+        std::cout << "---Testing Color Mode " << ReadbackHelper::getColorModeString(mode) << "---"
                   << std::endl;
-        GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
-        return;
+        mWriter->selectDisplay(mPrimaryDisplay);
+        ASSERT_NO_FATAL_FAILURE(
+                mComposerClient->setColorMode(mPrimaryDisplay, mode, RenderIntent::COLORIMETRIC));
+
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+                mPrimaryDisplay,
+                [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
+                    mHasReadbackBuffer = ReadbackHelper::readbackSupported(tmpPixelFormat,
+                                                                           tmpDataspace, tmpError);
+                    mPixelFormat = tmpPixelFormat;
+                    mDataspace = tmpDataspace;
+                });
+
+        if (!mHasReadbackBuffer) {
+            std::cout << "Readback not supported or unsupported pixelFormat/dataspace" << std::endl;
+            GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+            return;
+        }
+        ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
+                                      mDisplayHeight, mPixelFormat, mDataspace);
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+
+        mLayer->setTransform(Transform::FLIP_V);
+        mLayer->setDataspace(ReadbackHelper::getDataspaceForColorMode(mode), mWriter);
+
+        std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {0, mSideLength / 2, mSideLength / 2, mSideLength}, RED);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {mSideLength / 2, 0, mSideLength, mSideLength / 2}, BLUE);
+
+        writeLayers(mLayers);
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->validateDisplay();
+        execute();
+        if (mReader->mCompositionChanges.size() != 0) {
+            clearCommandReaderState();
+            GTEST_SUCCEED();
+            return;
+        }
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->presentDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
+        mTestRenderEngine->setRenderLayers(mLayers);
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->drawLayers());
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->checkColorBuffer(expectedColors));
     }
-    ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
-                                  mDisplayHeight, mPixelFormat, mDataspace);
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-
-    mLayer->setTransform(Transform::FLIP_V);
-
-    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
-    fillColorsArea(expectedColors, mDisplayWidth,
-                   {0, mSideLength / 2, mSideLength / 2, mSideLength}, RED);
-    fillColorsArea(expectedColors, mDisplayWidth,
-                   {mSideLength / 2, 0, mSideLength, mSideLength / 2}, BLUE);
-
-    writeLayers(mLayers);
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-    if (mReader->mCompositionChanges.size() != 0) {
-        clearCommandReaderState();
-        GTEST_SUCCEED();
-        return;
-    }
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->presentDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
 }
 
-TEST_F(GraphicsComposerTransformReadbackTest, ROT_180) {
-    if (!mHasReadbackBuffer) {
-        std::cout << "Readback not supported or unsuppported pixelFormat/dataspace or SRGB not a "
-                     "valid color mode"
+TEST_P(GraphicsTransformCompositionTest, ROT_180) {
+    for (ColorMode mode : mTestColorModes) {
+        std::cout << "---Testing Color Mode " << ReadbackHelper::getColorModeString(mode) << "---"
                   << std::endl;
-        GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
-        return;
+        mWriter->selectDisplay(mPrimaryDisplay);
+        ASSERT_NO_FATAL_FAILURE(
+                mComposerClient->setColorMode(mPrimaryDisplay, mode, RenderIntent::COLORIMETRIC));
+
+        mComposerClient->getRaw()->getReadbackBufferAttributes(
+                mPrimaryDisplay,
+                [&](const auto& tmpError, const auto& tmpPixelFormat, const auto& tmpDataspace) {
+                    mHasReadbackBuffer = ReadbackHelper::readbackSupported(tmpPixelFormat,
+                                                                           tmpDataspace, tmpError);
+                    mPixelFormat = tmpPixelFormat;
+                    mDataspace = tmpDataspace;
+                });
+
+        if (!mHasReadbackBuffer) {
+            std::cout << "Readback not supported or unsupported pixelFormat/dataspace" << std::endl;
+            GTEST_SUCCEED() << "Readback not supported or unsupported pixelFormat/dataspace";
+            return;
+        }
+        ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
+                                      mDisplayHeight, mPixelFormat, mDataspace);
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
+
+        mLayer->setTransform(Transform::ROT_180);
+        mLayer->setDataspace(ReadbackHelper::getDataspaceForColorMode(mode), mWriter);
+
+        std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {mSideLength / 2, mSideLength / 2, mSideLength, mSideLength},
+                                       RED);
+        ReadbackHelper::fillColorsArea(expectedColors, mDisplayWidth,
+                                       {0, 0, mSideLength / 2, mSideLength / 2}, BLUE);
+
+        writeLayers(mLayers);
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->validateDisplay();
+        execute();
+        if (mReader->mCompositionChanges.size() != 0) {
+            clearCommandReaderState();
+            GTEST_SUCCEED();
+            return;
+        }
+        ASSERT_EQ(0, mReader->mErrors.size());
+        mWriter->presentDisplay();
+        execute();
+        ASSERT_EQ(0, mReader->mErrors.size());
+        ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
+        mTestRenderEngine->setRenderLayers(mLayers);
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->drawLayers());
+        ASSERT_NO_FATAL_FAILURE(mTestRenderEngine->checkColorBuffer(expectedColors));
     }
-    ReadbackBuffer readbackBuffer(mPrimaryDisplay, mComposerClient, mGralloc, mDisplayWidth,
-                                  mDisplayHeight, mPixelFormat, mDataspace);
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.setReadbackBuffer());
-
-    mLayer->setTransform(Transform::ROT_180);
-
-    std::vector<IComposerClient::Color> expectedColors(mDisplayWidth * mDisplayHeight);
-    fillColorsArea(expectedColors, mDisplayWidth,
-                   {mSideLength / 2, mSideLength / 2, mSideLength, mSideLength}, RED);
-    fillColorsArea(expectedColors, mDisplayWidth, {0, 0, mSideLength / 2, mSideLength / 2}, BLUE);
-
-    writeLayers(mLayers);
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->validateDisplay();
-    execute();
-    if (mReader->mCompositionChanges.size() != 0) {
-        clearCommandReaderState();
-        GTEST_SUCCEED();
-        return;
-    }
-    ASSERT_EQ(0, mReader->mErrors.size());
-    mWriter->presentDisplay();
-    execute();
-    ASSERT_EQ(0, mReader->mErrors.size());
-    ASSERT_NO_FATAL_FAILURE(readbackBuffer.checkReadbackBuffer(expectedColors));
 }
 
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, GraphicsCompositionTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IComposer::descriptor)),
+        android::hardware::PrintInstanceNameToString);
+
+INSTANTIATE_TEST_CASE_P(
+        BlendModeTest, GraphicsBlendModeCompositionTest,
+        testing::Combine(
+                testing::ValuesIn(android::hardware::getAllHalInstanceNames(IComposer::descriptor)),
+                testing::Values("0.2", "1.0")),
+        android::hardware::PrintInstanceTupleNameToString<>);
+
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, GraphicsTransformCompositionTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IComposer::descriptor)),
+        android::hardware::PrintInstanceNameToString);
+
 }  // anonymous namespace
 }  // namespace vts
 }  // namespace V2_2
diff --git a/graphics/composer/2.2/vts/functional/VtsHalGraphicsComposerV2_2TargetTest.cpp b/graphics/composer/2.2/vts/functional/VtsHalGraphicsComposerV2_2TargetTest.cpp
index 51832f9..95a0f69 100644
--- a/graphics/composer/2.2/vts/functional/VtsHalGraphicsComposerV2_2TargetTest.cpp
+++ b/graphics/composer/2.2/vts/functional/VtsHalGraphicsComposerV2_2TargetTest.cpp
@@ -16,12 +16,14 @@
 
 #define LOG_TAG "graphics_composer_hidl_hal_test@2.2"
 
-#include <VtsHalHidlTargetTestBase.h>
 #include <android-base/logging.h>
 #include <android/hardware/graphics/mapper/2.0/IMapper.h>
 #include <composer-vts/2.1/GraphicsComposerCallback.h>
 #include <composer-vts/2.1/TestCommandReader.h>
 #include <composer-vts/2.2/ComposerVts.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 #include <mapper-vts/2.0/MapperVts.h>
 
 namespace android {
@@ -41,29 +43,11 @@
 using common::V1_1::RenderIntent;
 using mapper::V2_0::IMapper;
 
-// Test environment for graphics.composer
-class GraphicsComposerHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
-   public:
-    // get the test environment singleton
-    static GraphicsComposerHidlEnvironment* Instance() {
-        static GraphicsComposerHidlEnvironment* instance = new GraphicsComposerHidlEnvironment;
-        return instance;
-    }
-
-    virtual void registerTestServices() override { registerTestService<IComposer>(); }
-
-   private:
-    GraphicsComposerHidlEnvironment() {}
-
-    GTEST_DISALLOW_COPY_AND_ASSIGN_(GraphicsComposerHidlEnvironment);
-};
-
-class GraphicsComposerHidlTest : public ::testing::VtsHalHidlTargetTestBase {
-   protected:
+class GraphicsComposerHidlTest : public ::testing::TestWithParam<std::string> {
+  protected:
     void SetUp() override {
         ASSERT_NO_FATAL_FAILURE(
-            mComposer = std::make_unique<Composer>(
-                GraphicsComposerHidlEnvironment::Instance()->getServiceName<IComposer>()));
+                mComposer = std::make_unique<Composer>(IComposer::getService(GetParam())));
         ASSERT_NO_FATAL_FAILURE(mComposerClient = mComposer->createClient());
 
         mComposerCallback = new V2_1::vts::GraphicsComposerCallback;
@@ -188,7 +172,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_PER_FRAME_METADATA.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_PER_FRAME_METADATA) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_PER_FRAME_METADATA) {
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -239,7 +223,7 @@
 /**
  * Test IComposerClient::getPerFrameMetadataKeys.
  */
-TEST_F(GraphicsComposerHidlTest, GetPerFrameMetadataKeys) {
+TEST_P(GraphicsComposerHidlTest, GetPerFrameMetadataKeys) {
     std::vector<IComposerClient::PerFrameMetadataKey> keys;
     Error error = Error::NONE;
     mComposerClient->getRaw()->getPerFrameMetadataKeys(
@@ -261,7 +245,7 @@
  *
  * Test that virtual displays can be created and has the correct display type.
  */
-TEST_F(GraphicsComposerHidlTest, CreateVirtualDisplay_2_2) {
+TEST_P(GraphicsComposerHidlTest, CreateVirtualDisplay_2_2) {
     if (mComposerClient->getMaxVirtualDisplayCount() == 0) {
         GTEST_SUCCEED() << "no virtual display support";
         return;
@@ -286,7 +270,7 @@
  * Test that IComposerClient::getClientTargetSupport returns true for the
  * required client targets.
  */
-TEST_F(GraphicsComposerHidlTest, GetClientTargetSupport_2_2) {
+TEST_P(GraphicsComposerHidlTest, GetClientTargetSupport_2_2) {
     std::vector<Config> configs = mComposerClient->getDisplayConfigs(mPrimaryDisplay);
     for (auto config : configs) {
         int32_t width = mComposerClient->getDisplayAttribute(mPrimaryDisplay, config,
@@ -310,7 +294,7 @@
  * Error::BAD_DISPLAY when passed in an invalid display handle
  */
 
-TEST_F(GraphicsComposerHidlTest, GetClientTargetSupport_2_2BadDisplay) {
+TEST_P(GraphicsComposerHidlTest, GetClientTargetSupport_2_2BadDisplay) {
     std::vector<Config> configs = mComposerClient->getDisplayConfigs(mPrimaryDisplay);
     for (auto config : configs) {
         int32_t width = mComposerClient->getDisplayAttribute(mPrimaryDisplay, config,
@@ -332,7 +316,7 @@
 /**
  * Test IComposerClient::setPowerMode_2_2.
  */
-TEST_F(GraphicsComposerHidlTest, SetPowerMode_2_2) {
+TEST_P(GraphicsComposerHidlTest, SetPowerMode_2_2) {
     std::vector<IComposerClient::PowerMode> modes;
     modes.push_back(IComposerClient::PowerMode::OFF);
     modes.push_back(IComposerClient::PowerMode::ON_SUSPEND);
@@ -349,7 +333,7 @@
  * Test that IComposerClient::setPowerMode_2_2 succeeds for different varations
  * of PowerMode
  */
-TEST_F(GraphicsComposerHidlTest, SetPowerMode_2_2Variations) {
+TEST_P(GraphicsComposerHidlTest, SetPowerMode_2_2Variations) {
     std::vector<IComposerClient::PowerMode> modes;
 
     modes.push_back(IComposerClient::PowerMode::OFF);
@@ -404,7 +388,7 @@
  * Tests that IComposerClient::setPowerMode_2_2 returns BAD_DISPLAY when passed an
  * invalid display handle
  */
-TEST_F(GraphicsComposerHidlTest, SetPowerMode_2_2BadDisplay) {
+TEST_P(GraphicsComposerHidlTest, SetPowerMode_2_2BadDisplay) {
     Error error = mComposerClient->getRaw()->setPowerMode_2_2(mInvalidDisplayId,
                                                               IComposerClient::PowerMode::ON);
     ASSERT_EQ(Error::BAD_DISPLAY, error);
@@ -416,7 +400,7 @@
  * Test that IComposerClient::setPowerMode_2_2 returns BAD_PARAMETER when passed
  * an invalid PowerMode
  */
-TEST_F(GraphicsComposerHidlTest, SetPowerMode_2_2BadParameter) {
+TEST_P(GraphicsComposerHidlTest, SetPowerMode_2_2BadParameter) {
     Error error = mComposerClient->getRaw()->setPowerMode_2_2(
         mPrimaryDisplay, static_cast<IComposerClient::PowerMode>(-1));
     ASSERT_EQ(Error::BAD_PARAMETER, error);
@@ -428,7 +412,7 @@
  * Test that IComposerClient::setPowerMode_2_2 returns UNSUPPORTED when passed
  * DOZE or DOZE_SUPPORT on a device that does not support these modes
  */
-TEST_F(GraphicsComposerHidlTest, SetPowerMode_2_2Unsupported) {
+TEST_P(GraphicsComposerHidlTest, SetPowerMode_2_2Unsupported) {
     if (!mComposerClient->getDozeSupport(mPrimaryDisplay)) {
         Error error = mComposerClient->getRaw()->setPowerMode_2_2(mPrimaryDisplay,
                                                                   IComposerClient::PowerMode::DOZE);
@@ -445,7 +429,7 @@
  *
  * Test IComposerClient::setReadbackBuffer
  */
-TEST_F(GraphicsComposerHidlTest, SetReadbackBuffer) {
+TEST_P(GraphicsComposerHidlTest, SetReadbackBuffer) {
     if (!mHasReadbackBuffer) {
         return;
     }
@@ -469,7 +453,7 @@
  * Test that IComposerClient::setReadbackBuffer returns an Error::BAD_DISPLAY
  * when passed an invalid display handle
  */
-TEST_F(GraphicsComposerHidlTest, SetReadbackBufferBadDisplay) {
+TEST_P(GraphicsComposerHidlTest, SetReadbackBufferBadDisplay) {
     if (!mHasReadbackBuffer) {
         return;
     }
@@ -493,7 +477,7 @@
  * Test that IComposerClient::setReadbackBuffer returns Error::BAD_PARAMETER
  * when passed an invalid buffer handle
  */
-TEST_F(GraphicsComposerHidlTest, SetReadbackBufferBadParameter) {
+TEST_P(GraphicsComposerHidlTest, SetReadbackBufferBadParameter) {
     if (!mHasReadbackBuffer) {
         return;
     }
@@ -502,7 +486,7 @@
     ASSERT_EQ(Error::BAD_PARAMETER, error);
 }
 
-TEST_F(GraphicsComposerHidlTest, GetReadbackBufferFenceInactive) {
+TEST_P(GraphicsComposerHidlTest, GetReadbackBufferFenceInactive) {
     if (!mHasReadbackBuffer) {
         return;
     }
@@ -516,7 +500,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_FLOAT_COLOR.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_FLOAT_COLOR) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_FLOAT_COLOR) {
     V2_1::Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -554,7 +538,7 @@
 /**
  * Test IComposerClient::getDataspaceSaturationMatrix.
  */
-TEST_F(GraphicsComposerHidlTest, GetDataspaceSaturationMatrix) {
+TEST_P(GraphicsComposerHidlTest, GetDataspaceSaturationMatrix) {
     auto matrix = mComposerClient->getDataspaceSaturationMatrix(Dataspace::SRGB_LINEAR);
     // the last row is known
     ASSERT_EQ(0.0f, matrix[12]);
@@ -570,7 +554,7 @@
  * Error::BAD_PARAMETER when passed a dataspace other than
  * Dataspace::SRGB_LINEAR
  */
-TEST_F(GraphicsComposerHidlTest, GetDataspaceSaturationMatrixBadParameter) {
+TEST_P(GraphicsComposerHidlTest, GetDataspaceSaturationMatrixBadParameter) {
     mComposerClient->getRaw()->getDataspaceSaturationMatrix(
         Dataspace::UNKNOWN,
         [&](const auto& tmpError, const auto&) { ASSERT_EQ(Error::BAD_PARAMETER, tmpError); });
@@ -579,7 +563,7 @@
 /**
  * Test IComposerClient::getColorMode_2_2.
  */
-TEST_F(GraphicsComposerHidlTest, GetColorMode_2_2) {
+TEST_P(GraphicsComposerHidlTest, GetColorMode_2_2) {
     std::vector<ColorMode> modes = mComposerClient->getColorModes(mPrimaryDisplay);
 
     auto nativeMode = std::find(modes.cbegin(), modes.cend(), ColorMode::NATIVE);
@@ -592,7 +576,7 @@
  * Test that IComposerClient::getColorMode returns Error::BAD_DISPLAY when
  * passed an invalid display handle
  */
-TEST_F(GraphicsComposerHidlTest, GetColorMode_2_2BadDisplay) {
+TEST_P(GraphicsComposerHidlTest, GetColorMode_2_2BadDisplay) {
     mComposerClient->getRaw()->getColorModes_2_2(
         mInvalidDisplayId,
         [&](const auto& tmpError, const auto&) { ASSERT_EQ(Error::BAD_DISPLAY, tmpError); });
@@ -601,7 +585,7 @@
 /**
  * Test IComposerClient::getRenderIntents.
  */
-TEST_F(GraphicsComposerHidlTest, GetRenderIntents) {
+TEST_P(GraphicsComposerHidlTest, GetRenderIntents) {
     std::vector<ColorMode> modes = mComposerClient->getColorModes(mPrimaryDisplay);
     for (auto mode : modes) {
         std::vector<RenderIntent> intents =
@@ -631,7 +615,7 @@
  * Test that IComposerClient::getRenderIntent returns Error::BAD_DISPLAY when
  * passed an invalid display handle
  */
-TEST_F(GraphicsComposerHidlTest, GetRenderIntentsBadDisplay) {
+TEST_P(GraphicsComposerHidlTest, GetRenderIntentsBadDisplay) {
     std::vector<ColorMode> modes = mComposerClient->getColorModes(mPrimaryDisplay);
     for (auto mode : modes) {
         mComposerClient->getRaw()->getRenderIntents(
@@ -646,7 +630,7 @@
  * Test that IComposerClient::getRenderIntents returns Error::BAD_PARAMETER when
  * pased either an invalid Color mode or an invalid Render Intent
  */
-TEST_F(GraphicsComposerHidlTest, GetRenderIntentsBadParameter) {
+TEST_P(GraphicsComposerHidlTest, GetRenderIntentsBadParameter) {
     mComposerClient->getRaw()->getRenderIntents(
         mPrimaryDisplay, static_cast<ColorMode>(-1),
         [&](const auto& tmpError, const auto&) { EXPECT_EQ(Error::BAD_PARAMETER, tmpError); });
@@ -655,7 +639,7 @@
 /**
  * Test IComposerClient::setColorMode_2_2.
  */
-TEST_F(GraphicsComposerHidlTest, SetColorMode_2_2) {
+TEST_P(GraphicsComposerHidlTest, SetColorMode_2_2) {
     std::vector<ColorMode> modes = mComposerClient->getColorModes(mPrimaryDisplay);
     for (auto mode : modes) {
         std::vector<RenderIntent> intents =
@@ -674,7 +658,7 @@
  * Test that IComposerClient::setColorMode_2_2 returns an Error::BAD_DISPLAY
  * when passed an invalid display handle
  */
-TEST_F(GraphicsComposerHidlTest, SetColorMode_2_2BadDisplay) {
+TEST_P(GraphicsComposerHidlTest, SetColorMode_2_2BadDisplay) {
     Error error = mComposerClient->getRaw()->setColorMode_2_2(mInvalidDisplayId, ColorMode::NATIVE,
                                                               RenderIntent::COLORIMETRIC);
 
@@ -687,7 +671,7 @@
  * Test that IComposerClient::setColorMode_2_2 returns Error::BAD_PARAMETER when
  * passed an invalid Color mode or an invalid render intent
  */
-TEST_F(GraphicsComposerHidlTest, SetColorMode_2_2BadParameter) {
+TEST_P(GraphicsComposerHidlTest, SetColorMode_2_2BadParameter) {
     Error colorModeError = mComposerClient->getRaw()->setColorMode_2_2(
         mPrimaryDisplay, static_cast<ColorMode>(-1), RenderIntent::COLORIMETRIC);
     EXPECT_EQ(Error::BAD_PARAMETER, colorModeError);
@@ -697,6 +681,16 @@
     EXPECT_EQ(Error::BAD_PARAMETER, renderIntentError);
 }
 
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, GraphicsComposerHidlTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IComposer::descriptor)),
+        android::hardware::PrintInstanceNameToString);
+
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, GraphicsComposerHidlCommandTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IComposer::descriptor)),
+        android::hardware::PrintInstanceNameToString);
+
 }  // namespace
 }  // namespace vts
 }  // namespace V2_2
@@ -704,12 +698,3 @@
 }  // namespace graphics
 }  // namespace hardware
 }  // namespace android
-
-int main(int argc, char** argv) {
-    using android::hardware::graphics::composer::V2_2::vts::GraphicsComposerHidlEnvironment;
-    ::testing::AddGlobalTestEnvironment(GraphicsComposerHidlEnvironment::Instance());
-    ::testing::InitGoogleTest(&argc, argv);
-    GraphicsComposerHidlEnvironment::Instance()->init(&argc, argv);
-    int status = RUN_ALL_TESTS();
-    return status;
-}
diff --git a/graphics/composer/2.3/default/Android.bp b/graphics/composer/2.3/default/Android.bp
index 59b9436..a5696dd 100644
--- a/graphics/composer/2.3/default/Android.bp
+++ b/graphics/composer/2.3/default/Android.bp
@@ -28,8 +28,8 @@
         "android.hardware.graphics.composer@2.1",
         "android.hardware.graphics.composer@2.2",
         "android.hardware.graphics.composer@2.3",
-        "android.hardware.graphics.mapper@2.0",
-        "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.composer@2.1-resources",
+        "android.hardware.graphics.composer@2.2-resources",
         "libbase",
         "libbinder",
         "libcutils",
diff --git a/graphics/composer/2.3/utils/OWNERS b/graphics/composer/2.3/utils/OWNERS
index b3ea6be..cc6d937 100644
--- a/graphics/composer/2.3/utils/OWNERS
+++ b/graphics/composer/2.3/utils/OWNERS
@@ -2,7 +2,3 @@
 lpy@google.com
 stoza@google.com
 vhau@google.com
-
-# VTS team
-yim@google.com
-zhuoyao@google.com
diff --git a/graphics/composer/2.3/utils/command-buffer/Android.bp b/graphics/composer/2.3/utils/command-buffer/Android.bp
index c48fe7a..36ac297 100644
--- a/graphics/composer/2.3/utils/command-buffer/Android.bp
+++ b/graphics/composer/2.3/utils/command-buffer/Android.bp
@@ -3,12 +3,15 @@
     defaults: ["hidl_defaults"],
     vendor_available: true,
     shared_libs: [
-        "android.hardware.graphics.composer@2.1",
-        "android.hardware.graphics.composer@2.2",
+        "android.hardware.graphics.composer@2.3",
+    ],
+    export_shared_lib_headers: [
         "android.hardware.graphics.composer@2.3",
     ],
     header_libs: [
-        "android.hardware.graphics.composer@2.1-command-buffer",
+        "android.hardware.graphics.composer@2.2-command-buffer",
+    ],
+    export_header_lib_headers: [
         "android.hardware.graphics.composer@2.2-command-buffer",
     ],
     export_include_dirs: ["include"],
diff --git a/graphics/composer/2.3/utils/command-buffer/include/composer-command-buffer/2.3/ComposerCommandBuffer.h b/graphics/composer/2.3/utils/command-buffer/include/composer-command-buffer/2.3/ComposerCommandBuffer.h
index e1a870e..afc22d8 100644
--- a/graphics/composer/2.3/utils/command-buffer/include/composer-command-buffer/2.3/ComposerCommandBuffer.h
+++ b/graphics/composer/2.3/utils/command-buffer/include/composer-command-buffer/2.3/ComposerCommandBuffer.h
@@ -46,8 +46,8 @@
 class CommandWriterBase : public V2_2::CommandWriterBase {
    public:
     void setLayerPerFrameMetadata(const hidl_vec<IComposerClient::PerFrameMetadata>& metadataVec) {
-        beginCommand_2_3(IComposerClient::Command::SET_LAYER_PER_FRAME_METADATA,
-                         metadataVec.size() * 2);
+        beginCommand(IComposerClient::Command::SET_LAYER_PER_FRAME_METADATA,
+                     metadataVec.size() * 2);
         for (const auto& metadata : metadataVec) {
             writeSigned(static_cast<int32_t>(metadata.key));
             writeFloat(metadata.value);
@@ -69,8 +69,8 @@
 
     static constexpr uint16_t kSetLayerColorTransformLength = 16;
     void setLayerColorTransform(const float* matrix) {
-        beginCommand_2_3(IComposerClient::Command::SET_LAYER_COLOR_TRANSFORM,
-                         kSetLayerColorTransformLength);
+        beginCommand(IComposerClient::Command::SET_LAYER_COLOR_TRANSFORM,
+                     kSetLayerColorTransformLength);
         for (int i = 0; i < 16; i++) {
             writeFloat(matrix[i]);
         }
@@ -109,7 +109,7 @@
         // Blobs are written as:
         // {numElements, key1, size1, blob1, key2, size2, blob2, key3, size3...}
         uint16_t length = static_cast<uint16_t>(commandLength);
-        beginCommand_2_3(IComposerClient::Command::SET_LAYER_PER_FRAME_METADATA_BLOBS, length);
+        beginCommand(IComposerClient::Command::SET_LAYER_PER_FRAME_METADATA_BLOBS, length);
         write(static_cast<uint32_t>(metadata.size()));
         for (auto metadataBlob : metadata) {
             writeSigned(static_cast<int32_t>(metadataBlob.key));
@@ -120,11 +120,6 @@
     }
 
    protected:
-    void beginCommand_2_3(IComposerClient::Command command, uint16_t length) {
-        V2_2::CommandWriterBase::beginCommand_2_2(
-            static_cast<V2_2::IComposerClient::Command>(static_cast<int32_t>(command)), length);
-    }
-
     void writeBlob(uint32_t length, const unsigned char* blob) {
         memcpy(&mData[mDataWritten], blob, length);
         uint32_t numElements = length / 4;
diff --git a/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerClient.h b/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerClient.h
index b289b6a..041fbc8 100644
--- a/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerClient.h
+++ b/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerClient.h
@@ -21,9 +21,9 @@
 #endif
 
 #include <android/hardware/graphics/composer/2.3/IComposerClient.h>
-#include <composer-hal/2.2/ComposerResources.h>
 #include <composer-hal/2.3/ComposerCommandEngine.h>
 #include <composer-hal/2.3/ComposerHal.h>
+#include <composer-resources/2.2/ComposerResources.h>
 
 namespace android {
 namespace hardware {
@@ -184,18 +184,18 @@
     }
 
   protected:
+    using BaseType2_1 = V2_1::hal::detail::ComposerClientImpl<Interface, Hal>;
+    using BaseType2_1::mHal;
+    using BaseType2_1::mResources;
     std::unique_ptr<V2_1::hal::ComposerCommandEngine> createCommandEngine() override {
         return std::make_unique<ComposerCommandEngine>(
             mHal, static_cast<V2_2::hal::ComposerResources*>(mResources.get()));
     }
 
-   private:
+  private:
     using BaseType2_2 = V2_2::hal::detail::ComposerClientImpl<Interface, Hal>;
-    using BaseType2_1 = V2_1::hal::detail::ComposerClientImpl<Interface, Hal>;
     using BaseType2_1::mCommandEngine;
     using BaseType2_1::mCommandEngineMutex;
-    using BaseType2_1::mHal;
-    using BaseType2_1::mResources;
 };
 
 }  // namespace detail
diff --git a/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerCommandEngine.h b/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerCommandEngine.h
index 1a40d96..02f6212 100644
--- a/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerCommandEngine.h
+++ b/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerCommandEngine.h
@@ -23,8 +23,8 @@
 #include <composer-command-buffer/2.3/ComposerCommandBuffer.h>
 #include <composer-hal/2.1/ComposerCommandEngine.h>
 #include <composer-hal/2.2/ComposerCommandEngine.h>
-#include <composer-hal/2.2/ComposerResources.h>
 #include <composer-hal/2.3/ComposerHal.h>
+#include <composer-resources/2.2/ComposerResources.h>
 
 namespace android {
 namespace hardware {
@@ -50,6 +50,11 @@
         }
     }
 
+    std::unique_ptr<V2_1::CommandWriterBase> createCommandWriter(
+            size_t writerInitialSize) override {
+        return std::make_unique<CommandWriterBase>(writerInitialSize);
+    }
+
     bool executeSetLayerColorTransform(uint16_t length) {
         if (length != CommandWriterBase::kSetLayerColorTransformLength) {
             return false;
@@ -61,7 +66,7 @@
         }
         auto err = mHal->setLayerColorTransform(mCurrentDisplay, mCurrentLayer, matrix);
         if (err != Error::NONE) {
-            mWriter.setError(getCommandLoc(), err);
+            mWriter->setError(getCommandLoc(), err);
         }
 
         return true;
@@ -97,7 +102,7 @@
         }
         auto err = mHal->setLayerPerFrameMetadataBlobs(mCurrentDisplay, mCurrentLayer, metadata);
         if (err != Error::NONE) {
-            mWriter.setError(getCommandLoc(), err);
+            mWriter->setError(getCommandLoc(), err);
         }
         return true;
     }
@@ -111,8 +116,8 @@
 
    private:
     using BaseType2_1 = V2_1::hal::ComposerCommandEngine;
-    using BaseType2_1::mWriter;
     using BaseType2_2 = V2_2::hal::ComposerCommandEngine;
+    using BaseType2_1::mWriter;
 
     ComposerHal* mHal;
 };
diff --git a/graphics/composer/2.3/utils/passthrough/include/composer-passthrough/2.3/HwcHal.h b/graphics/composer/2.3/utils/passthrough/include/composer-passthrough/2.3/HwcHal.h
index d3b29bb..e0e1394 100644
--- a/graphics/composer/2.3/utils/passthrough/include/composer-passthrough/2.3/HwcHal.h
+++ b/graphics/composer/2.3/utils/passthrough/include/composer-passthrough/2.3/HwcHal.h
@@ -294,9 +294,6 @@
             (brightness < 0.0f && brightness != -1.0f)) {
             return Error::BAD_PARAMETER;
         }
-        if (!mDispatch.setDisplayBrightness) {
-            return Error::UNSUPPORTED;
-        }
         int32_t error = mDispatch.setDisplayBrightness(mDevice, display, brightness);
         return static_cast<Error>(error);
     }
@@ -307,6 +304,13 @@
             return false;
         }
 
+        if (!BaseType2_1::initDispatch(HWC2_FUNCTION_GET_DISPLAY_CAPABILITIES,
+                                       &mDispatch.getDisplayCapabilities) ||
+            !BaseType2_1::initDispatch(HWC2_FUNCTION_SET_DISPLAY_BRIGHTNESS,
+                                       &mDispatch.setDisplayBrightness)) {
+            return false;
+        }
+
         this->initOptionalDispatch(HWC2_FUNCTION_GET_DISPLAY_IDENTIFICATION_DATA,
                                    &mDispatch.getDisplayIdentificationData);
         this->initOptionalDispatch(HWC2_FUNCTION_SET_LAYER_COLOR_TRANSFORM,
@@ -317,14 +321,10 @@
                                    &mDispatch.setDisplayedContentSamplingEnabled);
         this->initOptionalDispatch(HWC2_FUNCTION_GET_DISPLAYED_CONTENT_SAMPLE,
                                    &mDispatch.getDisplayedContentSample);
-        this->initOptionalDispatch(HWC2_FUNCTION_GET_DISPLAY_CAPABILITIES,
-                                   &mDispatch.getDisplayCapabilities);
         this->initOptionalDispatch(HWC2_FUNCTION_SET_LAYER_PER_FRAME_METADATA_BLOBS,
                                    &mDispatch.setLayerPerFrameMetadataBlobs);
         this->initOptionalDispatch(HWC2_FUNCTION_GET_DISPLAY_BRIGHTNESS_SUPPORT,
                                    &mDispatch.getDisplayBrightnessSupport);
-        this->initOptionalDispatch(HWC2_FUNCTION_SET_DISPLAY_BRIGHTNESS,
-                                   &mDispatch.setDisplayBrightness);
         return true;
     }
 
diff --git a/graphics/composer/2.3/utils/vts/Android.bp b/graphics/composer/2.3/utils/vts/Android.bp
index 2fe6cd6..f65a9c4 100644
--- a/graphics/composer/2.3/utils/vts/Android.bp
+++ b/graphics/composer/2.3/utils/vts/Android.bp
@@ -21,22 +21,17 @@
         "ComposerVts.cpp",
     ],
     static_libs: [
-        "VtsHalHidlTargetTestBase",
-        "android.hardware.graphics.composer@2.1",
-        "android.hardware.graphics.composer@2.1-vts",
-        "android.hardware.graphics.composer@2.2",
         "android.hardware.graphics.composer@2.2-vts",
         "android.hardware.graphics.composer@2.3",
-	"android.hardware.graphics.mapper@2.0",
-	"android.hardware.graphics.mapper@2.0-vts",
-	"android.hardware.graphics.mapper@2.1",
-	"android.hardware.graphics.mapper@2.1-vts",
-	"android.hardware.graphics.mapper@3.0",
-	"android.hardware.graphics.mapper@3.0-vts",
+    ],
+    export_static_lib_headers: [
+        "android.hardware.graphics.composer@2.2-vts",
+        "android.hardware.graphics.composer@2.3",
     ],
     header_libs: [
-        "android.hardware.graphics.composer@2.1-command-buffer",
-        "android.hardware.graphics.composer@2.2-command-buffer",
+        "android.hardware.graphics.composer@2.3-command-buffer",
+    ],
+    export_header_lib_headers: [
         "android.hardware.graphics.composer@2.3-command-buffer",
     ],
     cflags: [
diff --git a/graphics/composer/2.3/utils/vts/include/composer-vts/2.3/ComposerVts.h b/graphics/composer/2.3/utils/vts/include/composer-vts/2.3/ComposerVts.h
index 0d4e5b8..e5ac842 100644
--- a/graphics/composer/2.3/utils/vts/include/composer-vts/2.3/ComposerVts.h
+++ b/graphics/composer/2.3/utils/vts/include/composer-vts/2.3/ComposerVts.h
@@ -49,12 +49,10 @@
    public:
     Composer();
     explicit Composer(const std::string& name);
+    explicit Composer(const sp<IComposer>& composer);
 
     std::unique_ptr<ComposerClient> createClient();
 
-  protected:
-    explicit Composer(const sp<IComposer>& composer);
-
    private:
     const sp<IComposer> mComposer;
 };
diff --git a/graphics/composer/2.3/vts/functional/Android.bp b/graphics/composer/2.3/vts/functional/Android.bp
index e421889..fa4823e 100644
--- a/graphics/composer/2.3/vts/functional/Android.bp
+++ b/graphics/composer/2.3/vts/functional/Android.bp
@@ -28,6 +28,7 @@
     static_libs: [
         "android.hardware.graphics.allocator@2.0",
         "android.hardware.graphics.allocator@3.0",
+        "android.hardware.graphics.allocator@4.0",
         "android.hardware.graphics.composer@2.1",
         "android.hardware.graphics.composer@2.1-vts",
         "android.hardware.graphics.composer@2.2",
@@ -40,10 +41,14 @@
         "android.hardware.graphics.mapper@2.1-vts",
         "android.hardware.graphics.mapper@3.0",
         "android.hardware.graphics.mapper@3.0-vts",
+        "android.hardware.graphics.mapper@4.0",
+        "android.hardware.graphics.mapper@4.0-vts",
     ],
     header_libs: [
         "android.hardware.graphics.composer@2.1-command-buffer",
         "android.hardware.graphics.composer@2.2-command-buffer",
         "android.hardware.graphics.composer@2.3-command-buffer",
     ],
+    disable_framework: true,
+    test_suites: ["general-tests", "vts-core"],
 }
diff --git a/graphics/composer/2.3/vts/functional/VtsHalGraphicsComposerV2_3TargetTest.cpp b/graphics/composer/2.3/vts/functional/VtsHalGraphicsComposerV2_3TargetTest.cpp
index dafe587..94766af 100644
--- a/graphics/composer/2.3/vts/functional/VtsHalGraphicsComposerV2_3TargetTest.cpp
+++ b/graphics/composer/2.3/vts/functional/VtsHalGraphicsComposerV2_3TargetTest.cpp
@@ -18,13 +18,15 @@
 
 #include <algorithm>
 
-#include <VtsHalHidlTargetTestBase.h>
 #include <android-base/logging.h>
 #include <android/hardware/graphics/mapper/2.0/IMapper.h>
 #include <composer-command-buffer/2.3/ComposerCommandBuffer.h>
 #include <composer-vts/2.1/GraphicsComposerCallback.h>
 #include <composer-vts/2.1/TestCommandReader.h>
 #include <composer-vts/2.3/ComposerVts.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 #include <mapper-vts/2.0/MapperVts.h>
 
 namespace android {
@@ -43,29 +45,11 @@
 using mapper::V2_0::IMapper;
 using V2_2::vts::Gralloc;
 
-// Test environment for graphics.composer
-class GraphicsComposerHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
-   public:
-    // get the test environment singleton
-    static GraphicsComposerHidlEnvironment* Instance() {
-        static GraphicsComposerHidlEnvironment* instance = new GraphicsComposerHidlEnvironment;
-        return instance;
-    }
-
-    virtual void registerTestServices() override { registerTestService<IComposer>(); }
-
-   private:
-    GraphicsComposerHidlEnvironment() {}
-
-    GTEST_DISALLOW_COPY_AND_ASSIGN_(GraphicsComposerHidlEnvironment);
-};
-
-class GraphicsComposerHidlTest : public ::testing::VtsHalHidlTargetTestBase {
-   protected:
+class GraphicsComposerHidlTest : public ::testing::TestWithParam<std::string> {
+  protected:
     void SetUp() override {
         ASSERT_NO_FATAL_FAILURE(
-            mComposer = std::make_unique<Composer>(
-                GraphicsComposerHidlEnvironment::Instance()->getServiceName<IComposer>()));
+                mComposer = std::make_unique<Composer>(IComposer::getService(GetParam())));
         ASSERT_NO_FATAL_FAILURE(mComposerClient = mComposer->createClient());
 
         mComposerCallback = new V2_1::vts::GraphicsComposerCallback;
@@ -175,7 +159,7 @@
  *
  * TODO: Check that ports are unique for multiple displays.
  */
-TEST_F(GraphicsComposerHidlTest, GetDisplayIdentificationData) {
+TEST_P(GraphicsComposerHidlTest, GetDisplayIdentificationData) {
     uint8_t port0;
     std::vector<uint8_t> data0;
     if (mComposerClient->getDisplayIdentificationData(mPrimaryDisplay, &port0, &data0)) {
@@ -193,7 +177,7 @@
 /**
  * Test IComposerClient::Command::SET_LAYER_PER_FRAME_METADATA.
  */
-TEST_F(GraphicsComposerHidlCommandTest, SET_LAYER_PER_FRAME_METADATA) {
+TEST_P(GraphicsComposerHidlCommandTest, SET_LAYER_PER_FRAME_METADATA) {
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -244,7 +228,7 @@
 /**
  * Test IComposerClient::getHdrCapabilities_2_3
  */
-TEST_F(GraphicsComposerHidlTest, GetHdrCapabilities_2_3) {
+TEST_P(GraphicsComposerHidlTest, GetHdrCapabilities_2_3) {
     float maxLuminance;
     float maxAverageLuminance;
     float minLuminance;
@@ -256,7 +240,7 @@
 /**
  * Test IComposerClient::getPerFrameMetadataKeys_2_3
  */
-TEST_F(GraphicsComposerHidlTest, GetPerFrameMetadataKeys_2_3) {
+TEST_P(GraphicsComposerHidlTest, GetPerFrameMetadataKeys_2_3) {
     std::vector<IComposerClient::PerFrameMetadataKey> keys;
     mComposerClient->getRaw()->getPerFrameMetadataKeys_2_3(
         mPrimaryDisplay, [&](const auto tmpError, const auto outKeys) {
@@ -270,7 +254,7 @@
 /**
  * TestIComposerClient::getReadbackBufferAttributes_2_3
  */
-TEST_F(GraphicsComposerHidlTest, GetReadbackBufferAttributes_2_3) {
+TEST_P(GraphicsComposerHidlTest, GetReadbackBufferAttributes_2_3) {
     Dataspace dataspace;
     PixelFormat pixelFormat;
 
@@ -288,7 +272,7 @@
 /**
  * Test IComposerClient::getClientTargetSupport_2_3
  */
-TEST_F(GraphicsComposerHidlTest, GetClientTargetSupport_2_3) {
+TEST_P(GraphicsComposerHidlTest, GetClientTargetSupport_2_3) {
     std::vector<V2_1::Config> configs = mComposerClient->getDisplayConfigs(mPrimaryDisplay);
     for (auto config : configs) {
         int32_t width = mComposerClient->getDisplayAttribute(mPrimaryDisplay, config,
@@ -311,7 +295,7 @@
  * Error::BAD_DISPLAY when passed in an invalid display handle
  */
 
-TEST_F(GraphicsComposerHidlTest, GetClientTargetSupport_2_3BadDisplay) {
+TEST_P(GraphicsComposerHidlTest, GetClientTargetSupport_2_3BadDisplay) {
     std::vector<V2_1::Config> configs = mComposerClient->getDisplayConfigs(mPrimaryDisplay);
     for (auto config : configs) {
         int32_t width = mComposerClient->getDisplayAttribute(mPrimaryDisplay, config,
@@ -333,7 +317,7 @@
 /**
  * Test IComposerClient::getRenderIntents_2_3
  */
-TEST_F(GraphicsComposerHidlTest, GetRenderIntents_2_3) {
+TEST_P(GraphicsComposerHidlTest, GetRenderIntents_2_3) {
     std::vector<ColorMode> modes = mComposerClient->getColorModes_2_3(mPrimaryDisplay);
     for (auto mode : modes) {
         std::vector<RenderIntent> intents =
@@ -363,7 +347,7 @@
  * Test that IComposerClient::getRenderIntents_2_3 returns Error::BAD_DISPLAY when
  * passed an invalid display handle
  */
-TEST_F(GraphicsComposerHidlTest, GetRenderIntents_2_3BadDisplay) {
+TEST_P(GraphicsComposerHidlTest, GetRenderIntents_2_3BadDisplay) {
     std::vector<ColorMode> modes = mComposerClient->getColorModes_2_3(mPrimaryDisplay);
     for (auto mode : modes) {
         mComposerClient->getRaw()->getRenderIntents_2_3(
@@ -378,7 +362,7 @@
  * Test that IComposerClient::getRenderIntents_2_3 returns Error::BAD_PARAMETER when
  * pased either an invalid Color mode or an invalid Render Intent
  */
-TEST_F(GraphicsComposerHidlTest, GetRenderIntents_2_3BadParameter) {
+TEST_P(GraphicsComposerHidlTest, GetRenderIntents_2_3BadParameter) {
     mComposerClient->getRaw()->getRenderIntents_2_3(
         mPrimaryDisplay, static_cast<ColorMode>(-1),
         [&](const auto& tmpError, const auto&) { EXPECT_EQ(Error::BAD_PARAMETER, tmpError); });
@@ -387,7 +371,7 @@
 /**
  * IComposerClient::getColorModes_2_3
  */
-TEST_F(GraphicsComposerHidlTest, GetColorModes_2_3) {
+TEST_P(GraphicsComposerHidlTest, GetColorModes_2_3) {
     std::vector<ColorMode> colorModes = mComposerClient->getColorModes_2_3(mPrimaryDisplay);
 
     auto native = std::find(colorModes.cbegin(), colorModes.cend(), ColorMode::NATIVE);
@@ -400,7 +384,7 @@
  * Test that IComposerClient::getColorModes_2_3 returns Error::BAD_DISPLAY when
  * passed an invalid display handle
  */
-TEST_F(GraphicsComposerHidlTest, GetColorMode_2_3BadDisplay) {
+TEST_P(GraphicsComposerHidlTest, GetColorMode_2_3BadDisplay) {
     mComposerClient->getRaw()->getColorModes_2_3(
         mInvalidDisplayId,
         [&](const auto& tmpError, const auto&) { ASSERT_EQ(Error::BAD_DISPLAY, tmpError); });
@@ -409,7 +393,7 @@
 /**
  * IComposerClient::setColorMode_2_3
  */
-TEST_F(GraphicsComposerHidlTest, SetColorMode_2_3) {
+TEST_P(GraphicsComposerHidlTest, SetColorMode_2_3) {
     std::vector<ColorMode> colorModes = mComposerClient->getColorModes_2_3(mPrimaryDisplay);
     for (auto mode : colorModes) {
         std::vector<RenderIntent> intents =
@@ -430,7 +414,7 @@
  * Test that IComposerClient::setColorMode_2_3 returns an Error::BAD_DISPLAY
  * when passed an invalid display handle
  */
-TEST_F(GraphicsComposerHidlTest, SetColorMode_2_3BadDisplay) {
+TEST_P(GraphicsComposerHidlTest, SetColorMode_2_3BadDisplay) {
     Error error = mComposerClient->getRaw()->setColorMode_2_3(mInvalidDisplayId, ColorMode::NATIVE,
                                                               RenderIntent::COLORIMETRIC);
 
@@ -443,7 +427,7 @@
  * Test that IComposerClient::setColorMode_2_3 returns Error::BAD_PARAMETER when
  * passed an invalid Color mode or an invalid render intent
  */
-TEST_F(GraphicsComposerHidlTest, SetColorMode_2_3BadParameter) {
+TEST_P(GraphicsComposerHidlTest, SetColorMode_2_3BadParameter) {
     Error colorModeError = mComposerClient->getRaw()->setColorMode_2_3(
         mPrimaryDisplay, static_cast<ColorMode>(-1), RenderIntent::COLORIMETRIC);
     EXPECT_EQ(Error::BAD_PARAMETER, colorModeError);
@@ -458,7 +442,7 @@
  * TODO Add color to the layer, use matrix to keep only red component,
  * and check.
  */
-TEST_F(GraphicsComposerHidlTest, SetLayerColorTransform) {
+TEST_P(GraphicsComposerHidlTest, SetLayerColorTransform) {
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -485,7 +469,7 @@
     }
 }
 
-TEST_F(GraphicsComposerHidlTest, GetDisplayedContentSamplingAttributes) {
+TEST_P(GraphicsComposerHidlTest, GetDisplayedContentSamplingAttributes) {
     int constexpr invalid = -1;
     auto format = static_cast<PixelFormat>(invalid);
     auto dataspace = static_cast<Dataspace>(invalid);
@@ -505,7 +489,7 @@
               static_cast<hidl_bitfield<IComposerClient::FormatColorComponent>>(invalid));
 };
 
-TEST_F(GraphicsComposerHidlTest, SetDisplayedContentSamplingEnabled) {
+TEST_P(GraphicsComposerHidlTest, SetDisplayedContentSamplingEnabled) {
     auto const maxFrames = 10;
     auto const enableAllComponents = 0;
     auto error = mComposerClient->setDisplayedContentSamplingEnabled(
@@ -523,7 +507,7 @@
     EXPECT_EQ(error, Error::NONE);
 }
 
-TEST_F(GraphicsComposerHidlTest, GetDisplayedContentSample) {
+TEST_P(GraphicsComposerHidlTest, GetDisplayedContentSample) {
     int constexpr invalid = -1;
     auto format = static_cast<PixelFormat>(invalid);
     auto dataspace = static_cast<Dataspace>(invalid);
@@ -558,7 +542,7 @@
  * getDisplayCapabilities is required in composer 2.3
  * Test some constraints.
  */
-TEST_F(GraphicsComposerHidlTest, getDisplayCapabilitiesBasic) {
+TEST_P(GraphicsComposerHidlTest, getDisplayCapabilitiesBasic) {
     std::vector<IComposerClient::DisplayCapability> capabilities;
     const auto error = mComposerClient->getDisplayCapabilities(mPrimaryDisplay, &capabilities);
     ASSERT_EQ(Error::NONE, error);
@@ -572,13 +556,13 @@
     EXPECT_EQ(mComposerClient->getDisplayBrightnessSupport(mPrimaryDisplay), hasBrightnessSupport);
 }
 
-TEST_F(GraphicsComposerHidlTest, getDisplayCapabilitiesBadDisplay) {
+TEST_P(GraphicsComposerHidlTest, getDisplayCapabilitiesBadDisplay) {
     std::vector<IComposerClient::DisplayCapability> capabilities;
     const auto error = mComposerClient->getDisplayCapabilities(mInvalidDisplayId, &capabilities);
     EXPECT_EQ(Error::BAD_DISPLAY, error);
 }
 
-TEST_F(GraphicsComposerHidlTest, SetLayerPerFrameMetadataBlobs) {
+TEST_P(GraphicsComposerHidlTest, SetLayerPerFrameMetadataBlobs) {
     Layer layer;
     ASSERT_NO_FATAL_FAILURE(layer =
                                 mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
@@ -604,7 +588,7 @@
 /*
  * Test that if brightness operations are supported, setDisplayBrightness works as expected.
  */
-TEST_F(GraphicsComposerHidlTest, setDisplayBrightness) {
+TEST_P(GraphicsComposerHidlTest, setDisplayBrightness) {
     std::vector<IComposerClient::DisplayCapability> capabilities;
     const auto error = mComposerClient->getDisplayCapabilities(mPrimaryDisplay, &capabilities);
     ASSERT_EQ(Error::NONE, error);
@@ -627,6 +611,16 @@
     EXPECT_EQ(mComposerClient->setDisplayBrightness(mPrimaryDisplay, -2.0f), Error::BAD_PARAMETER);
 }
 
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, GraphicsComposerHidlTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IComposer::descriptor)),
+        android::hardware::PrintInstanceNameToString);
+
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, GraphicsComposerHidlCommandTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IComposer::descriptor)),
+        android::hardware::PrintInstanceNameToString);
+
 }  // namespace
 }  // namespace vts
 }  // namespace V2_3
@@ -634,12 +628,3 @@
 }  // namespace graphics
 }  // namespace hardware
 }  // namespace android
-
-int main(int argc, char** argv) {
-    using android::hardware::graphics::composer::V2_3::vts::GraphicsComposerHidlEnvironment;
-    ::testing::AddGlobalTestEnvironment(GraphicsComposerHidlEnvironment::Instance());
-    ::testing::InitGoogleTest(&argc, argv);
-    GraphicsComposerHidlEnvironment::Instance()->init(&argc, argv);
-    int status = RUN_ALL_TESTS();
-    return status;
-}
diff --git a/graphics/composer/2.4/Android.bp b/graphics/composer/2.4/Android.bp
new file mode 100644
index 0000000..5f700be
--- /dev/null
+++ b/graphics/composer/2.4/Android.bp
@@ -0,0 +1,25 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.graphics.composer@2.4",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "types.hal",
+        "IComposer.hal",
+        "IComposerCallback.hal",
+        "IComposerClient.hal",
+    ],
+    interfaces: [
+        "android.hardware.graphics.common@1.0",
+        "android.hardware.graphics.common@1.1",
+        "android.hardware.graphics.common@1.2",
+        "android.hardware.graphics.composer@2.1",
+        "android.hardware.graphics.composer@2.2",
+        "android.hardware.graphics.composer@2.3",
+        "android.hidl.base@1.0",
+    ],
+    gen_java: false,
+}
diff --git a/graphics/composer/2.4/IComposer.hal b/graphics/composer/2.4/IComposer.hal
new file mode 100644
index 0000000..d3b3cb6
--- /dev/null
+++ b/graphics/composer/2.4/IComposer.hal
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.composer@2.4;
+
+import IComposerClient;
+import @2.1::Error;
+import @2.3::IComposer;
+
+interface IComposer extends @2.3::IComposer {
+    /**
+     * Creates a v2.4 client of the composer. Supersedes @2.3::createClient.
+     *
+     * @return error is NONE upon success. Otherwise,
+     *         NO_RESOURCES when the client could not be created.
+     * @return client is the newly created client.
+     */
+    createClient_2_4() generates (Error error, IComposerClient client);
+};
diff --git a/graphics/composer/2.4/IComposerCallback.hal b/graphics/composer/2.4/IComposerCallback.hal
new file mode 100644
index 0000000..f343cee
--- /dev/null
+++ b/graphics/composer/2.4/IComposerCallback.hal
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.composer@2.4;
+
+import @2.1::Display;
+import @2.1::IComposerCallback;
+
+interface IComposerCallback extends @2.1::IComposerCallback {
+    /**
+     * Notifies the client that a vsync event has occurred. This callback must
+     * only be triggered when vsync is enabled for this display (through
+     * setVsyncEnabled).
+     *
+     * @param display is the display which has received a vsync event
+     * @param timestamp is the CLOCK_MONOTONIC time at which the vsync event
+     *        occurred, in nanoseconds.
+     * @param vsyncPeriodNanos is the display vsync period in nanoseconds i.e. the next onVsync_2_4
+     *        is expected to be called vsyncPeriodNanos nanoseconds after this call.
+     */
+    oneway onVsync_2_4(Display display, int64_t timestamp, VsyncPeriodNanos vsyncPeriodNanos);
+
+    /**
+     * Notifies the client that the previously reported timing for vsync period change has been
+     * updated. This may occur if the composer missed the deadline for changing the vsync period
+     * or the client submitted a refresh frame too late.
+     *
+     * @param display is the display which vsync period change is in progress
+     * @param updatedTimeline is the new timeline for the vsync period change.
+     */
+    oneway onVsyncPeriodTimingChanged(Display display, VsyncPeriodChangeTimeline updatedTimeline);
+
+    /**
+     * Notifies the client that the conditions which previously led to returning
+     * SEAMLESS_NOT_POSSIBLE from setActiveConfigWithConstraints have changed and now seamless may
+     * be possible. Client should retry calling setActiveConfigWithConstraints.
+     *
+     * @param display is a display setActiveConfigWithConstraints previously failed with
+     * SEAMLESS_NOT_POSSIBLE.
+     */
+    oneway onSeamlessPossible(Display display);
+};
diff --git a/graphics/composer/2.4/IComposerClient.hal b/graphics/composer/2.4/IComposerClient.hal
new file mode 100644
index 0000000..9e3cf0e
--- /dev/null
+++ b/graphics/composer/2.4/IComposerClient.hal
@@ -0,0 +1,348 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.composer@2.4;
+
+import android.hardware.graphics.common@1.2::PixelFormat;
+import android.hardware.graphics.common@1.2::Dataspace;
+import android.hardware.graphics.composer@2.1::IComposerClient.Command;
+import IComposerCallback;
+import @2.1::Config;
+import @2.1::Display;
+import @2.1::Error;
+import @2.1::IComposerClient;
+import @2.3::IComposerClient;
+
+interface IComposerClient extends @2.3::IComposerClient {
+    /**
+     * Display attributes queryable through getDisplayAttribute_2_4.
+     */
+    enum Attribute : @2.1::IComposerClient.Attribute {
+        /**
+         * The configuration group ID (as int32_t) this config is associated to.
+         * Switching between configurations within the same group may be done seamlessly
+         * in some conditions via setActiveConfigWithConstraints.
+         */
+        CONFIG_GROUP = 7,
+    };
+
+    /**
+     * Required capabilities which are supported by the display. The
+     * particular set of supported capabilities for a given display may be
+     * retrieved using getDisplayCapabilities.
+     */
+    enum DisplayCapability : @2.3::IComposerClient.DisplayCapability {
+        /**
+         * Indicates that the display supports protected contents.
+         * When returned, hardware composer must be able to accept client target
+         * with protected buffers.
+         */
+        PROTECTED_CONTENTS = 4,
+
+        /**
+         * Indicates that both the composer HAL implementation and the given display
+         * support a low latency mode, such as HDMI 2.1 Auto Low Latency Mode.
+         */
+        AUTO_LOW_LATENCY_MODE = 5,
+    };
+
+    enum Command : @2.3::IComposerClient.Command {
+        /**
+         * SET_CLIENT_TARGET_PROPERTY has this pseudo prototype
+         *
+         * This command has the following binary layout in bytes:
+         *
+         *     0 - 3: clientTargetProperty.pixelFormat
+         *     4 - 7: clientTargetProperty.dataspace
+         *
+         *   setClientTargetProperty(ClientTargetProperty clientTargetProperty);
+         */
+         SET_CLIENT_TARGET_PROPERTY = 0x105 << @2.1::IComposerClient.Command:OPCODE_SHIFT,
+
+        /**
+         * SET_LAYER_GENERIC_METADATA has this pseudo prototype
+         *
+         *   setLayerGenericMetadata(string key, bool mandatory, vec<uint8_t> value);
+         *
+         * Sets a piece of generic metadata for the given layer. If this
+         * function is called twice with the same key but different values, the
+         * newer value must override the older one. Calling this function with a
+         * 0-length value must reset that key's metadata as if it had not been
+         * set.
+         *
+         * A given piece of metadata may either be mandatory or a hint
+         * (non-mandatory) as indicated by the second parameter. Mandatory
+         * metadata may affect the composition result, which is to say that it
+         * may cause a visible change in the final image. By contrast, hints may
+         * only affect the composition strategy, such as which layers are
+         * composited by the client, but must not cause a visible change in the
+         * final image. The value of the mandatory flag shall match the value
+         * returned from getLayerGenericMetadataKeys for the given key.
+         *
+         * Only keys which have been returned from getLayerGenericMetadataKeys()
+         * shall be accepted. Any other keys must result in an UNSUPPORTED error.
+         *
+         * The value passed into this function shall be the binary
+         * representation of a HIDL type corresponding to the given key. For
+         * example, a key of 'com.example.V1_3.Foo' shall be paired with a
+         * value of type com.example@1.3::Foo, which would be defined in a
+         * vendor HAL extension.
+         *
+         * This function will be encoded in the command buffer in this order:
+         *   1) The key length, stored as a uint32_t
+         *   2) The key itself, padded to a uint32_t boundary if necessary
+         *   3) The mandatory flag, stored as a uint32_t
+         *   4) The value length in bytes, stored as a uint32_t
+         *   5) The value itself, padded to a uint32_t boundary if necessary
+         *
+         * @param key indicates which metadata value should be set on this layer
+         * @param mandatory indicates whether this particular key represents
+         *        mandatory metadata or a hint (non-mandatory metadata), as
+         *        described above
+         * @param value is a binary representation of a HIDL struct
+         *        corresponding to the key as described above
+         */
+        SET_LAYER_GENERIC_METADATA = 0x40e << @2.1::IComposerClient.Command:OPCODE_SHIFT,
+    };
+
+    /**
+     * Supersedes {@link @2.1::IComposerClient.DisplayType}.
+     */
+    enum DisplayConnectionType : uint32_t {
+        /**
+         * Display is connected through internal port, e.g. DSI, eDP.
+         */
+        INTERNAL = 0,
+        /**
+         * Display is connected through external port, e.g. HDMI, DisplayPort.
+         */
+        EXTERNAL = 1,
+    };
+
+    enum ContentType : uint32_t {
+        NONE = 0,
+
+        /**
+         * These modes correspond to those found in the HDMI 1.4 specification.
+         */
+        GRAPHICS = 1,
+        PHOTO = 2,
+        CINEMA = 3,
+        GAME = 4,
+    };
+
+    /**
+     * Constraints for changing vsync period.
+     */
+    struct VsyncPeriodChangeConstraints {
+        /**
+         * Time in CLOCK_MONOTONIC after which the vsync period may change
+         * (i.e., the vsync period must not change before this time).
+         */
+        int64_t desiredTimeNanos;
+
+        /**
+         * If true, requires that the vsync period change must happen seamlessly without
+         * a noticeable visual artifact.
+         */
+        bool seamlessRequired;
+    };
+
+    struct ClientTargetProperty {
+        PixelFormat pixelFormat;
+        Dataspace dataspace;
+    };
+
+    /**
+     * Provides a IComposerCallback object for the device to call.
+     *
+     * This function must be called only once.
+     *
+     * @param callback is the IComposerCallback object.
+     */
+    registerCallback_2_4(IComposerCallback callback);
+
+    /**
+     * Provides a list of supported capabilities (as described in the
+     * definition of DisplayCapability above). This list must not change after
+     * initialization.
+     *
+     * @return error is NONE upon success. Otherwise,
+     *     BAD_DISPLAY when an invalid display handle was passed in.
+     * @return capabilities is a list of supported capabilities.
+     */
+    getDisplayCapabilities_2_4(Display display)
+        generates (Error error, vec<DisplayCapability> capabilities);
+
+    /**
+     * Returns whether the given physical display is internal or external.
+     *
+     * @return error is NONE upon success. Otherwise,
+     *     BAD_DISPLAY when the given display is invalid or virtual.
+     * @return type is the connection type of the display.
+     */
+    getDisplayConnectionType(Display display) generates (Error error, DisplayConnectionType type);
+
+    /**
+     * Returns a display attribute value for a particular display
+     * configuration.
+     *
+     * @param display is the display to query.
+     * @param config is the display configuration for which to return
+     *        attribute values.
+     * @return error is NONE upon success. Otherwise,
+     *         BAD_DISPLAY when an invalid display handle was passed in.
+     *         BAD_CONFIG when config does not name a valid configuration for
+     *                    this display.
+     *         BAD_PARAMETER when attribute is unrecognized.
+     *         UNSUPPORTED when attribute cannot be queried for the config.
+     * @return value is the value of the attribute.
+     */
+    getDisplayAttribute_2_4(Display display, Config config, Attribute attribute)
+        generates (Error error, int32_t value);
+
+    /**
+     * Retrieves which vsync period the display is currently using.
+     *
+     * If no display configuration is currently active, this function must
+     * return BAD_CONFIG. If the vsync period is about to change due to a
+     * setActiveConfigWithConstraints call, this function must return the current vsync period
+     * until the change takes place.
+     *
+     * @param display is the display for which the vsync period is queried.
+     * @return error is NONE upon success. Otherwise,
+     *         BAD_DISPLAY when an invalid display handle was passed in.
+     *         BAD_CONFIG when no configuration is currently active.
+     * @return vsyncPeriodNanos is the current vsync period of the display.
+     */
+    getDisplayVsyncPeriod(Display display)
+        generates (Error error, VsyncPeriodNanos vsyncPeriodNanos);
+
+    /**
+     * Sets the active configuration and the refresh rate for this display.
+     * If the new config shares the same config group as the current config,
+     * only the vsync period shall change.
+     * Upon returning, the given display configuration, except vsync period, must be active and
+     * remain so until either this function is called again or the display is disconnected.
+     * When the display starts to refresh at the new vsync period, onVsync_2_4 callback must be
+     * called with the new vsync period.
+     *
+     * @param display is the display for which the active config is set.
+     * @param config is the new display configuration.
+     * @param vsyncPeriodChangeConstraints are the constraints required for changing vsync period.
+     *
+     * @return error is NONE upon success. Otherwise,
+     *         BAD_DISPLAY when an invalid display handle was passed in.
+     *         BAD_CONFIG when the configuration handle passed in is not valid
+     *                    for this display.
+     *         SEAMLESS_NOT_ALLOWED when seamlessRequired was true but config provided doesn't
+     *                              share the same config group as the current config.
+     *         SEAMLESS_NOT_POSSIBLE when seamlessRequired was true but the display cannot achieve
+     *                               the vsync period change without a noticeable visual artifact.
+     *                               When the conditions change and it may be possible to change
+     *                               the vsync period seamlessly, onSeamlessPossible callback
+     *                               must be called to indicate that caller should retry.
+     * @return timeline is the timeline for the vsync period change.
+     */
+    setActiveConfigWithConstraints(Display display, Config config,
+        VsyncPeriodChangeConstraints vsyncPeriodChangeConstraints)
+        generates (Error error, VsyncPeriodChangeTimeline timeline);
+
+    /**
+     * Requests the display to enable/disable its low latency mode.
+     *
+     * If the display is connected via HDMI 2.1, then Auto Low Latency Mode should be triggered. If
+     * the display is internally connected and a custom low latency mode is available, that should
+     * be triggered.
+     *
+     * This function should only be called if the display reports support for
+     * DisplayCapability::AUTO_LOW_LATENCY_MODE from getDisplayCapabilities_2_4.
+     *
+     * @return error is NONE upon success. Otherwise,
+     *     BAD_DISPLAY when an invalid display handle was passed in.
+     *     UNSUPPORTED when AUTO_LOW_LATENCY_MODE is not supported by the composer
+     *         implementation or the given display
+     */
+    setAutoLowLatencyMode(Display display, bool on)
+        generates (Error error);
+
+    /**
+     * Provides a list of all the content types supported by this display (any of
+     * ContentType::{GRAPHICS, PHOTO, CINEMA, GAME}). This list must not change after
+     * initialization.
+     *
+     * Content types are introduced in HDMI 1.4 and supporting them is optional. The
+     * ContentType::NONE is always supported and will not be returned by this method..
+     *
+     * @return error is NONE upon success. Otherwise,
+     *     BAD_DISPLAY when an invalid display handle was passed in.
+     * @return supportedContentTypes is a list of supported content types.
+     */
+    getSupportedContentTypes(Display display)
+        generates(Error error, vec<ContentType> supportedContentTypes);
+
+    /**
+     * Instructs the connected display that the content being shown is of the given type - one of
+     * GRAPHICS, PHOTO, CINEMA, GAME.
+     *
+     * Content types are introduced in HDMI 1.4 and supporting them is optional. If they are
+     * supported, this signal should switch the display to a mode that is optimal for the given
+     * type of content. See HDMI 1.4 specification for more information.
+     *
+     * If the display is internally connected (not through HDMI), and such modes are available,
+     * this method should trigger them.
+     *
+     * This function should only be called if the display reports support for the corresponding
+     * content type (ContentType::{GRAPHICS, PHOTO, CINEMA, GAME}) from getSupportedContentTypes.
+     * ContentType::NONE is supported by default and can always be set.
+     *
+     * @return error is NONE upon success. Otherwise,
+     *     BAD_DISPLAY when an invalid display handle was passed in.
+     *     UNSUPPORTED when the given content type is not supported by the composer
+     *         implementation or the given display
+     */
+    setContentType(Display display, ContentType type)
+        generates (Error error);
+
+    struct LayerGenericMetadataKey {
+        /**
+         * Key names must comply with the requirements specified for
+         * getLayerGenericMetadataKeys below
+         */
+        string name;
+
+        /**
+         * The mandatory flag is defined in the description of
+         * setLayerGenericMetadata above
+         */
+        bool mandatory;
+    };
+
+    /**
+     * Retrieves the set of keys that may be passed into setLayerGenericMetadata
+     *
+     * Key names must meet the following requirements:
+     * - Must be specified in reverse domain name notation
+     * - Must not start with 'com.android' or 'android'
+     * - Must be unique within the returned vector
+     * - Must correspond to a matching HIDL struct type, which defines the
+     *   structure of its values. For example, the key 'com.example.V1-3.Foo'
+     *   should correspond to a value of type com.example@1.3::Foo, which is
+     *   defined in a vendor HAL extension
+     */
+    getLayerGenericMetadataKeys()
+        generates(Error error, vec<LayerGenericMetadataKey> keys);
+};
diff --git a/graphics/composer/2.4/default/Android.bp b/graphics/composer/2.4/default/Android.bp
new file mode 100644
index 0000000..a30609b
--- /dev/null
+++ b/graphics/composer/2.4/default/Android.bp
@@ -0,0 +1,46 @@
+//
+// Copyright 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_binary {
+    name: "android.hardware.graphics.composer@2.4-service",
+    defaults: ["hidl_defaults"],
+    vendor: true,
+    relative_install_path: "hw",
+    srcs: ["service.cpp"],
+    init_rc: ["android.hardware.graphics.composer@2.4-service.rc"],
+    header_libs: [
+        "android.hardware.graphics.composer@2.4-passthrough",
+    ],
+    shared_libs: [
+        "android.hardware.graphics.composer@2.1",
+        "android.hardware.graphics.composer@2.2",
+        "android.hardware.graphics.composer@2.3",
+        "android.hardware.graphics.composer@2.4",
+        "android.hardware.graphics.composer@2.1-resources",
+        "android.hardware.graphics.composer@2.2-resources",
+        "libbase",
+        "libbinder",
+        "libcutils",
+        "libfmq",
+        "libhardware",
+        "libhidlbase",
+        "libhwc2on1adapter",
+        "libhwc2onfbadapter",
+        "liblog",
+        "libsync",
+        "libutils",
+    ],
+}
diff --git a/graphics/composer/2.4/default/OWNERS b/graphics/composer/2.4/default/OWNERS
new file mode 100644
index 0000000..cc6d937
--- /dev/null
+++ b/graphics/composer/2.4/default/OWNERS
@@ -0,0 +1,4 @@
+# Graphics team
+lpy@google.com
+stoza@google.com
+vhau@google.com
diff --git a/graphics/composer/2.4/default/android.hardware.graphics.composer@2.4-service.rc b/graphics/composer/2.4/default/android.hardware.graphics.composer@2.4-service.rc
new file mode 100644
index 0000000..a296b0a
--- /dev/null
+++ b/graphics/composer/2.4/default/android.hardware.graphics.composer@2.4-service.rc
@@ -0,0 +1,7 @@
+service vendor.hwcomposer-2-4 /vendor/bin/hw/android.hardware.graphics.composer@2.4-service
+    class hal animation
+    user system
+    group graphics drmrpc
+    capabilities SYS_NICE
+    onrestart restart surfaceflinger
+    writepid /dev/cpuset/system-background/tasks
diff --git a/graphics/composer/2.4/default/service.cpp b/graphics/composer/2.4/default/service.cpp
new file mode 100644
index 0000000..98dac3e
--- /dev/null
+++ b/graphics/composer/2.4/default/service.cpp
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <sched.h>
+
+#include <android/hardware/graphics/composer/2.4/IComposer.h>
+#include <binder/ProcessState.h>
+#include <composer-passthrough/2.4/HwcLoader.h>
+#include <hidl/HidlTransportSupport.h>
+
+using android::hardware::graphics::composer::V2_4::IComposer;
+using android::hardware::graphics::composer::V2_4::passthrough::HwcLoader;
+
+int main() {
+    // the conventional HAL might start binder services
+    android::ProcessState::initWithDriver("/dev/vndbinder");
+    android::ProcessState::self()->setThreadPoolMaxThreadCount(4);
+    android::ProcessState::self()->startThreadPool();
+
+    // same as SF main thread
+    struct sched_param param = {0};
+    param.sched_priority = 2;
+    if (sched_setscheduler(0, SCHED_FIFO | SCHED_RESET_ON_FORK, &param) != 0) {
+        ALOGE("Couldn't set SCHED_FIFO: %d", errno);
+    }
+
+    android::hardware::configureRpcThreadpool(4, true /* will join */);
+
+    android::sp<IComposer> composer = HwcLoader::load();
+    if (composer == nullptr) {
+        return 1;
+    }
+    if (composer->registerAsService() != android::NO_ERROR) {
+        ALOGE("failed to register service");
+        return 1;
+    }
+
+    android::hardware::joinRpcThreadpool();
+
+    ALOGE("service is terminating");
+    return 1;
+}
diff --git a/graphics/composer/2.4/types.hal b/graphics/composer/2.4/types.hal
new file mode 100644
index 0000000..065f024
--- /dev/null
+++ b/graphics/composer/2.4/types.hal
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.composer@2.4;
+
+import @2.1::Error;
+
+enum Error : @2.1::Error {
+    /**
+     * Seamless cannot be required for configurations that don't share a config group
+     */
+    SEAMLESS_NOT_ALLOWED = 9,
+    /**
+     * Seamless requirements cannot be met
+     */
+    SEAMLESS_NOT_POSSIBLE = 10,
+};
+
+/**
+ * Timing for a vsync period change.
+ */
+struct VsyncPeriodChangeTimeline {
+    /**
+     * The time in CLOCK_MONOTONIC when the new display will start to refresh at
+     * the new vsync period.
+     */
+    int64_t newVsyncAppliedTimeNanos;
+
+    /**
+     * Set to true if the client is required to send a frame to be displayed before
+     * the change can take place.
+     */
+    bool refreshRequired;
+
+    /**
+     * The time in CLOCK_MONOTONIC when the client is expected to send the new frame.
+     * Should be ignored if refreshRequired is false.
+     */
+    int64_t refreshTimeNanos;
+};
+
+typedef uint32_t VsyncPeriodNanos;
diff --git a/graphics/composer/2.4/utils/OWNERS b/graphics/composer/2.4/utils/OWNERS
new file mode 100644
index 0000000..cc6d937
--- /dev/null
+++ b/graphics/composer/2.4/utils/OWNERS
@@ -0,0 +1,4 @@
+# Graphics team
+lpy@google.com
+stoza@google.com
+vhau@google.com
diff --git a/graphics/composer/2.4/utils/command-buffer/Android.bp b/graphics/composer/2.4/utils/command-buffer/Android.bp
new file mode 100644
index 0000000..8acf0e1
--- /dev/null
+++ b/graphics/composer/2.4/utils/command-buffer/Android.bp
@@ -0,0 +1,18 @@
+cc_library_headers {
+    name: "android.hardware.graphics.composer@2.4-command-buffer",
+    defaults: ["hidl_defaults"],
+    vendor_available: true,
+    shared_libs: [
+        "android.hardware.graphics.composer@2.4",
+    ],
+    export_shared_lib_headers: [
+        "android.hardware.graphics.composer@2.4",
+    ],
+    header_libs: [
+        "android.hardware.graphics.composer@2.3-command-buffer",
+    ],
+    export_header_lib_headers: [
+        "android.hardware.graphics.composer@2.3-command-buffer",
+    ],
+    export_include_dirs: ["include"],
+}
diff --git a/graphics/composer/2.4/utils/command-buffer/include/composer-command-buffer/2.4/ComposerCommandBuffer.h b/graphics/composer/2.4/utils/command-buffer/include/composer-command-buffer/2.4/ComposerCommandBuffer.h
new file mode 100644
index 0000000..eb35e5c
--- /dev/null
+++ b/graphics/composer/2.4/utils/command-buffer/include/composer-command-buffer/2.4/ComposerCommandBuffer.h
@@ -0,0 +1,90 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#ifndef LOG_TAG
+#warn "ComposerCommandBuffer.h included without LOG_TAG"
+#endif
+
+#undef LOG_NDEBUG
+#define LOG_NDEBUG 0
+
+#include <android/hardware/graphics/composer/2.4/IComposer.h>
+#include <android/hardware/graphics/composer/2.4/IComposerClient.h>
+#include <composer-command-buffer/2.3/ComposerCommandBuffer.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_4 {
+
+using android::hardware::MessageQueue;
+using android::hardware::graphics::composer::V2_4::Error;
+using android::hardware::graphics::composer::V2_4::IComposerClient;
+
+// This class helps build a command queue.  Note that all sizes/lengths are in
+// units of uint32_t's.
+class CommandWriterBase : public V2_3::CommandWriterBase {
+  public:
+    static constexpr uint16_t kSetClientTargetPropertyLength = 2;
+
+    CommandWriterBase(uint32_t initialMaxSize) : V2_3::CommandWriterBase(initialMaxSize) {}
+
+    void setClientTargetProperty(
+            const IComposerClient::ClientTargetProperty& clientTargetProperty) {
+        beginCommand(IComposerClient::Command::SET_CLIENT_TARGET_PROPERTY,
+                     kSetClientTargetPropertyLength);
+        writeSigned(static_cast<int32_t>(clientTargetProperty.pixelFormat));
+        writeSigned(static_cast<int32_t>(clientTargetProperty.dataspace));
+        endCommand();
+    }
+
+    void setLayerGenericMetadata(const hidl_string& key, const bool mandatory,
+                                 const hidl_vec<uint8_t>& value) {
+        const size_t commandSize = 3 + sizeToElements(key.size()) + sizeToElements(value.size());
+        if (commandSize > std::numeric_limits<uint16_t>::max()) {
+            LOG_FATAL("Too much generic metadata (%zu elements)", commandSize);
+            return;
+        }
+
+        beginCommand(IComposerClient::Command::SET_LAYER_GENERIC_METADATA,
+                     static_cast<uint16_t>(commandSize));
+        write(key.size());
+        writeBlob(key.size(), reinterpret_cast<const unsigned char*>(key.c_str()));
+        write(mandatory);
+        write(value.size());
+        writeBlob(value.size(), value.data());
+        endCommand();
+    }
+
+  protected:
+    uint32_t sizeToElements(uint32_t size) { return (size + 3) / 4; }
+};
+
+// This class helps parse a command queue.  Note that all sizes/lengths are in
+// units of uint32_t's.
+class CommandReaderBase : public V2_3::CommandReaderBase {
+  public:
+    CommandReaderBase() : V2_3::CommandReaderBase() {}
+};
+
+}  // namespace V2_4
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.4/utils/hal/Android.bp b/graphics/composer/2.4/utils/hal/Android.bp
new file mode 100644
index 0000000..f4cdea4
--- /dev/null
+++ b/graphics/composer/2.4/utils/hal/Android.bp
@@ -0,0 +1,36 @@
+//
+// Copyright 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_library_headers {
+    name: "android.hardware.graphics.composer@2.4-hal",
+    defaults: ["hidl_defaults"],
+    vendor_available: true,
+    shared_libs: [
+        "android.hardware.graphics.composer@2.4",
+    ],
+    export_shared_lib_headers: [
+        "android.hardware.graphics.composer@2.4",
+    ],
+    header_libs: [
+        "android.hardware.graphics.composer@2.3-hal",
+        "android.hardware.graphics.composer@2.4-command-buffer",
+    ],
+    export_header_lib_headers: [
+        "android.hardware.graphics.composer@2.3-hal",
+        "android.hardware.graphics.composer@2.4-command-buffer",
+    ],
+    export_include_dirs: ["include"],
+}
diff --git a/graphics/composer/2.4/utils/hal/include/composer-hal/2.4/Composer.h b/graphics/composer/2.4/utils/hal/include/composer-hal/2.4/Composer.h
new file mode 100644
index 0000000..129bae6
--- /dev/null
+++ b/graphics/composer/2.4/utils/hal/include/composer-hal/2.4/Composer.h
@@ -0,0 +1,89 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#ifndef LOG_TAG
+#warning "Composer.h included without LOG_TAG"
+#endif
+
+#include <android/hardware/graphics/composer/2.4/IComposer.h>
+#include <composer-hal/2.3/Composer.h>
+#include <composer-hal/2.4/ComposerClient.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_4 {
+namespace hal {
+
+namespace detail {
+
+// ComposerImpl implements V2_*::IComposer on top of V2_*::ComposerHal
+template <typename Interface, typename Hal>
+class ComposerImpl : public V2_3::hal::detail::ComposerImpl<Interface, Hal> {
+  public:
+    static std::unique_ptr<ComposerImpl> create(std::unique_ptr<Hal> hal) {
+        return std::make_unique<ComposerImpl>(std::move(hal));
+    }
+
+    explicit ComposerImpl(std::unique_ptr<Hal> hal) : BaseType2_3(std::move(hal)) {}
+
+    // IComposer 2.4 interface
+
+    Return<void> createClient_2_4(IComposer::createClient_2_4_cb hidl_cb) override {
+        std::unique_lock<std::mutex> lock(mClientMutex);
+        if (!waitForClientDestroyedLocked(lock)) {
+            hidl_cb(Error::NO_RESOURCES, nullptr);
+            return Void();
+        }
+
+        sp<ComposerClient> client = ComposerClient::create(mHal.get()).release();
+        if (!client) {
+            hidl_cb(Error::NO_RESOURCES, nullptr);
+            return Void();
+        }
+
+        auto clientDestroyed = [this]() { onClientDestroyed(); };
+        client->setOnClientDestroyed(clientDestroyed);
+
+        mClient = client;
+        hidl_cb(Error::NONE, client);
+        return Void();
+    }
+
+  private:
+    using BaseType2_3 = V2_3::hal::detail::ComposerImpl<Interface, Hal>;
+    using BaseType2_1 = V2_1::hal::detail::ComposerImpl<Interface, Hal>;
+
+    using BaseType2_1::mClient;
+    using BaseType2_1::mClientMutex;
+    using BaseType2_1::mHal;
+    using BaseType2_1::onClientDestroyed;
+    using BaseType2_1::waitForClientDestroyedLocked;
+};
+
+}  // namespace detail
+
+using Composer = detail::ComposerImpl<IComposer, ComposerHal>;
+
+}  // namespace hal
+}  // namespace V2_4
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.4/utils/hal/include/composer-hal/2.4/ComposerClient.h b/graphics/composer/2.4/utils/hal/include/composer-hal/2.4/ComposerClient.h
new file mode 100644
index 0000000..c889069
--- /dev/null
+++ b/graphics/composer/2.4/utils/hal/include/composer-hal/2.4/ComposerClient.h
@@ -0,0 +1,203 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#ifndef LOG_TAG
+#warning "ComposerClient.h included without LOG_TAG"
+#endif
+
+#include <android/hardware/graphics/composer/2.4/IComposerCallback.h>
+#include <android/hardware/graphics/composer/2.4/IComposerClient.h>
+#include <composer-hal/2.4/ComposerCommandEngine.h>
+#include <composer-hal/2.4/ComposerHal.h>
+#include <composer-resources/2.1/ComposerResources.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_4 {
+namespace hal {
+
+namespace detail {
+
+// ComposerClientImpl implements V2_*::IComposerClient on top of V2_*::ComposerHal
+template <typename Interface, typename Hal>
+class ComposerClientImpl : public V2_3::hal::detail::ComposerClientImpl<Interface, Hal> {
+  public:
+    ComposerClientImpl(Hal* hal) : BaseType2_3(hal) {}
+
+    ~ComposerClientImpl() override { mHal->unregisterEventCallback_2_4(); }
+
+    class HalEventCallback : public Hal::EventCallback_2_4 {
+      public:
+        HalEventCallback(const sp<IComposerCallback> callback,
+                         V2_1::hal::ComposerResources* resources)
+            : mCallback(callback), mResources(resources) {}
+
+        void onHotplug(Display display, IComposerCallback::Connection connected) override {
+            if (connected == IComposerCallback::Connection::CONNECTED) {
+                mResources->addPhysicalDisplay(display);
+            } else if (connected == IComposerCallback::Connection::DISCONNECTED) {
+                mResources->removeDisplay(display);
+            }
+
+            auto ret = mCallback->onHotplug(display, connected);
+            ALOGE_IF(!ret.isOk(), "failed to send onHotplug: %s", ret.description().c_str());
+        }
+
+        void onRefresh(Display display) override {
+            mResources->setDisplayMustValidateState(display, true);
+            auto ret = mCallback->onRefresh(display);
+            ALOGE_IF(!ret.isOk(), "failed to send onRefresh: %s", ret.description().c_str());
+        }
+
+        void onVsync(Display display, int64_t timestamp) override {
+            auto ret = mCallback->onVsync(display, timestamp);
+            ALOGE_IF(!ret.isOk(), "failed to send onVsync: %s", ret.description().c_str());
+        }
+
+        void onVsync_2_4(Display display, int64_t timestamp,
+                         VsyncPeriodNanos vsyncPeriodNanos) override {
+            auto ret = mCallback->onVsync_2_4(display, timestamp, vsyncPeriodNanos);
+            ALOGE_IF(!ret.isOk(), "failed to send onVsync_2_4: %s", ret.description().c_str());
+        }
+
+        void onVsyncPeriodTimingChanged(Display display,
+                                        const VsyncPeriodChangeTimeline& updatedTimeline) override {
+            auto ret = mCallback->onVsyncPeriodTimingChanged(display, updatedTimeline);
+            ALOGE_IF(!ret.isOk(), "failed to send onVsyncPeriodTimingChanged: %s",
+                     ret.description().c_str());
+        }
+
+        void onSeamlessPossible(Display display) override {
+            auto ret = mCallback->onSeamlessPossible(display);
+            ALOGE_IF(!ret.isOk(), "failed to send onSealmessPossible: %s",
+                     ret.description().c_str());
+        }
+
+      protected:
+        const sp<IComposerCallback> mCallback;
+        V2_1::hal::ComposerResources* const mResources;
+    };
+
+    Return<void> registerCallback_2_4(const sp<IComposerCallback>& callback) override {
+        // no locking as we require this function to be called only once
+        mHalEventCallback_2_4 = std::make_unique<HalEventCallback>(callback, mResources.get());
+        mHal->registerEventCallback_2_4(mHalEventCallback_2_4.get());
+        return Void();
+    }
+
+    Return<void> getDisplayCapabilities_2_4(
+            Display display, IComposerClient::getDisplayCapabilities_2_4_cb hidl_cb) override {
+        std::vector<IComposerClient::DisplayCapability> capabilities;
+        Error error = mHal->getDisplayCapabilities_2_4(display, &capabilities);
+        hidl_cb(error, capabilities);
+        return Void();
+    }
+
+    Return<void> getDisplayConnectionType(
+            Display display, IComposerClient::getDisplayConnectionType_cb hidl_cb) override {
+        IComposerClient::DisplayConnectionType type;
+        Error error = mHal->getDisplayConnectionType(display, &type);
+        hidl_cb(error, type);
+        return Void();
+    }
+
+    Return<void> getDisplayAttribute_2_4(
+            Display display, Config config, IComposerClient::Attribute attribute,
+            IComposerClient::getDisplayAttribute_2_4_cb hidl_cb) override {
+        int32_t value = 0;
+        Error error = mHal->getDisplayAttribute_2_4(display, config, attribute, &value);
+        hidl_cb(error, value);
+        return Void();
+    }
+
+    Return<void> getDisplayVsyncPeriod(Display display,
+                                       IComposerClient::getDisplayVsyncPeriod_cb hidl_cb) override {
+        VsyncPeriodNanos vsyncPeriods;
+        Error error = mHal->getDisplayVsyncPeriod(display, &vsyncPeriods);
+        hidl_cb(error, vsyncPeriods);
+        return Void();
+    }
+
+    Return<void> setActiveConfigWithConstraints(
+            Display display, Config config,
+            const IComposerClient::VsyncPeriodChangeConstraints& vsyncPeriodChangeConstraints,
+            IComposerClient::setActiveConfigWithConstraints_cb hidl_cb) override {
+        VsyncPeriodChangeTimeline timeline = {};
+        Error error = mHal->setActiveConfigWithConstraints(display, config,
+                                                           vsyncPeriodChangeConstraints, &timeline);
+        hidl_cb(error, timeline);
+        return Void();
+    }
+
+    Return<Error> setAutoLowLatencyMode(Display display, bool on) override {
+        return mHal->setAutoLowLatencyMode(display, on);
+    }
+
+    Return<void> getSupportedContentTypes(
+            Display display, IComposerClient::getSupportedContentTypes_cb hidl_cb) override {
+        std::vector<IComposerClient::ContentType> supportedContentTypes;
+        Error error = mHal->getSupportedContentTypes(display, &supportedContentTypes);
+
+        hidl_cb(error, supportedContentTypes);
+        return Void();
+    }
+
+    Return<Error> setContentType(Display display,
+                                 IComposerClient::ContentType contentType) override {
+        return mHal->setContentType(display, contentType);
+    }
+
+    Return<void> getLayerGenericMetadataKeys(
+            IComposerClient::getLayerGenericMetadataKeys_cb hidl_cb) override {
+        std::vector<IComposerClient::LayerGenericMetadataKey> keys;
+        Error error = mHal->getLayerGenericMetadataKeys(&keys);
+        hidl_cb(error, keys);
+        return Void();
+    }
+
+    static std::unique_ptr<ComposerClientImpl> create(Hal* hal) {
+        auto client = std::make_unique<ComposerClientImpl>(hal);
+        return client->init() ? std::move(client) : nullptr;
+    }
+
+  protected:
+    std::unique_ptr<V2_1::hal::ComposerCommandEngine> createCommandEngine() override {
+        return std::make_unique<ComposerCommandEngine>(
+                mHal, static_cast<V2_2::hal::ComposerResources*>(mResources.get()));
+    }
+
+  private:
+    using BaseType2_3 = V2_3::hal::detail::ComposerClientImpl<Interface, Hal>;
+    using BaseType2_1 = V2_1::hal::detail::ComposerClientImpl<Interface, Hal>;
+    using BaseType2_1::mHal;
+    using BaseType2_1::mResources;
+    std::unique_ptr<HalEventCallback> mHalEventCallback_2_4;
+};
+
+}  // namespace detail
+
+using ComposerClient = detail::ComposerClientImpl<IComposerClient, ComposerHal>;
+
+}  // namespace hal
+}  // namespace V2_4
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.4/utils/hal/include/composer-hal/2.4/ComposerCommandEngine.h b/graphics/composer/2.4/utils/hal/include/composer-hal/2.4/ComposerCommandEngine.h
new file mode 100644
index 0000000..697d6b8
--- /dev/null
+++ b/graphics/composer/2.4/utils/hal/include/composer-hal/2.4/ComposerCommandEngine.h
@@ -0,0 +1,122 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#ifndef LOG_TAG
+#warning "ComposerCommandEngine.h included without LOG_TAG"
+#endif
+
+#include <composer-command-buffer/2.4/ComposerCommandBuffer.h>
+#include <composer-hal/2.1/ComposerCommandEngine.h>
+#include <composer-hal/2.3/ComposerCommandEngine.h>
+#include <composer-hal/2.4/ComposerHal.h>
+#include <composer-resources/2.2/ComposerResources.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_4 {
+namespace hal {
+
+class ComposerCommandEngine : public V2_3::hal::ComposerCommandEngine {
+  public:
+    ComposerCommandEngine(ComposerHal* hal, V2_2::hal::ComposerResources* resources)
+        : BaseType2_3(hal, resources), mHal(hal) {}
+
+  protected:
+    std::unique_ptr<V2_1::CommandWriterBase> createCommandWriter(
+            size_t writerInitialSize) override {
+        return std::make_unique<CommandWriterBase>(writerInitialSize);
+    }
+
+  private:
+    using BaseType2_1 = V2_1::hal::ComposerCommandEngine;
+    using BaseType2_3 = V2_3::hal::ComposerCommandEngine;
+    using BaseType2_1::mWriter;
+
+    V2_1::Error executeValidateDisplayInternal() override {
+        std::vector<Layer> changedLayers;
+        std::vector<IComposerClient::Composition> compositionTypes;
+        uint32_t displayRequestMask = 0x0;
+        std::vector<Layer> requestedLayers;
+        std::vector<uint32_t> requestMasks;
+        IComposerClient::ClientTargetProperty clientTargetProperty{PixelFormat::RGBA_8888,
+                                                                   Dataspace::UNKNOWN};
+
+        auto err = mHal->validateDisplay_2_4(mCurrentDisplay, &changedLayers, &compositionTypes,
+                                             &displayRequestMask, &requestedLayers, &requestMasks,
+                                             &clientTargetProperty);
+        mResources->setDisplayMustValidateState(mCurrentDisplay, false);
+        if (err == Error::NONE) {
+            mWriter->setChangedCompositionTypes(changedLayers, compositionTypes);
+            mWriter->setDisplayRequests(displayRequestMask, requestedLayers, requestMasks);
+            getWriter()->setClientTargetProperty(clientTargetProperty);
+        } else {
+            mWriter->setError(getCommandLoc(), static_cast<V2_1::Error>(err));
+        }
+        return static_cast<V2_1::Error>(err);
+    }
+
+    CommandWriterBase* getWriter() { return static_cast<CommandWriterBase*>(mWriter.get()); }
+
+    bool executeCommand(V2_1::IComposerClient::Command command, uint16_t length) override {
+        switch (static_cast<IComposerClient::Command>(command)) {
+            case IComposerClient::Command::SET_LAYER_GENERIC_METADATA:
+                return executeSetLayerGenericMetadata(length);
+            default:
+                return BaseType2_3::executeCommand(command, length);
+        }
+    }
+
+    bool executeSetLayerGenericMetadata(uint16_t length) {
+        // We expect at least two buffer lengths and a mandatory flag
+        if (length < 3) {
+            return false;
+        }
+
+        const uint32_t keySize = read();
+        std::string key;
+        key.resize(keySize);
+        readBlob(keySize, key.data());
+
+        const bool mandatory = read();
+
+        const uint32_t valueSize = read();
+        std::vector<uint8_t> value(valueSize);
+        readBlob(valueSize, value.data());
+
+        auto error = mHal->setLayerGenericMetadata(mCurrentDisplay, mCurrentLayer, key, mandatory,
+                                                   value);
+        if (error != Error::NONE) {
+            // The error cast is safe because setLayerGenericMetadata doesn't
+            // return any of the new values added in V2_4::Error
+            mWriter->setError(getCommandLoc(), static_cast<V2_1::Error>(error));
+        }
+
+        return true;
+    }
+
+    ComposerHal* mHal;
+};
+
+}  // namespace hal
+}  // namespace V2_4
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.4/utils/hal/include/composer-hal/2.4/ComposerHal.h b/graphics/composer/2.4/utils/hal/include/composer-hal/2.4/ComposerHal.h
new file mode 100644
index 0000000..58991c1
--- /dev/null
+++ b/graphics/composer/2.4/utils/hal/include/composer-hal/2.4/ComposerHal.h
@@ -0,0 +1,93 @@
+/*
+ * Copyright 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android/hardware/graphics/composer/2.4/types.h>
+#include <composer-hal/2.3/ComposerHal.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_4 {
+namespace hal {
+
+using common::V1_1::RenderIntent;
+using common::V1_2::ColorMode;
+using common::V1_2::Dataspace;
+using common::V1_2::Hdr;
+using common::V1_2::PixelFormat;
+using V2_1::Config;
+using V2_1::Display;
+using V2_1::Layer;
+using V2_4::Error;
+using V2_4::VsyncPeriodNanos;
+
+class ComposerHal : public V2_3::hal::ComposerHal {
+  public:
+    class EventCallback_2_4 {
+      public:
+        virtual ~EventCallback_2_4() = default;
+        virtual void onHotplug(Display display, IComposerCallback::Connection connected) = 0;
+        virtual void onRefresh(Display display) = 0;
+        virtual void onVsync(Display display, int64_t timestamp) = 0;
+        virtual void onVsync_2_4(Display display, int64_t timestamp,
+                                 VsyncPeriodNanos vsyncPeriodNanos) = 0;
+        virtual void onVsyncPeriodTimingChanged(Display display,
+                                                const VsyncPeriodChangeTimeline& timeline) = 0;
+        virtual void onSeamlessPossible(Display display) = 0;
+    };
+
+    virtual void registerEventCallback_2_4(EventCallback_2_4* callback) = 0;
+
+    virtual void unregisterEventCallback_2_4() = 0;
+
+    virtual Error getDisplayCapabilities_2_4(
+            Display display, std::vector<IComposerClient::DisplayCapability>* outCapabilities) = 0;
+    virtual Error getDisplayConnectionType(Display display,
+                                           IComposerClient::DisplayConnectionType* outType) = 0;
+    virtual Error getDisplayAttribute_2_4(Display display, Config config,
+                                          IComposerClient::Attribute attribute,
+                                          int32_t* outValue) = 0;
+    virtual Error getDisplayVsyncPeriod(Display display, VsyncPeriodNanos* outVsyncPeriod) = 0;
+    virtual Error setActiveConfigWithConstraints(
+            Display display, Config config,
+            const IComposerClient::VsyncPeriodChangeConstraints& vsyncPeriodChangeConstraints,
+            VsyncPeriodChangeTimeline* timeline) = 0;
+    virtual Error setAutoLowLatencyMode(Display display, bool on) = 0;
+    virtual Error getSupportedContentTypes(
+            Display display,
+            std::vector<IComposerClient::ContentType>* outSupportedContentTypes) = 0;
+    virtual Error setContentType(Display display, IComposerClient::ContentType contentType) = 0;
+    virtual Error validateDisplay_2_4(
+            Display display, std::vector<Layer>* outChangedLayers,
+            std::vector<IComposerClient::Composition>* outCompositionTypes,
+            uint32_t* outDisplayRequestMask, std::vector<Layer>* outRequestedLayers,
+            std::vector<uint32_t>* outRequestMasks,
+            IComposerClient::ClientTargetProperty* outClientTargetProperty) = 0;
+    virtual Error setLayerGenericMetadata(Display display, Layer layer, const std::string& key,
+                                          bool mandatory, const std::vector<uint8_t>& value) = 0;
+    virtual Error getLayerGenericMetadataKeys(
+            std::vector<IComposerClient::LayerGenericMetadataKey>* outKeys) = 0;
+};
+
+}  // namespace hal
+}  // namespace V2_4
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.4/utils/passthrough/Android.bp b/graphics/composer/2.4/utils/passthrough/Android.bp
new file mode 100644
index 0000000..43d9aaa
--- /dev/null
+++ b/graphics/composer/2.4/utils/passthrough/Android.bp
@@ -0,0 +1,30 @@
+//
+// Copyright 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_library_headers {
+    name: "android.hardware.graphics.composer@2.4-passthrough",
+    defaults: ["hidl_defaults"],
+    vendor: true,
+    header_libs: [
+        "android.hardware.graphics.composer@2.3-passthrough",
+        "android.hardware.graphics.composer@2.4-hal",
+    ],
+    export_header_lib_headers: [
+        "android.hardware.graphics.composer@2.3-passthrough",
+        "android.hardware.graphics.composer@2.4-hal",
+    ],
+    export_include_dirs: ["include"],
+}
diff --git a/graphics/composer/2.4/utils/passthrough/include/composer-passthrough/2.4/HwcHal.h b/graphics/composer/2.4/utils/passthrough/include/composer-passthrough/2.4/HwcHal.h
new file mode 100644
index 0000000..d28e006
--- /dev/null
+++ b/graphics/composer/2.4/utils/passthrough/include/composer-passthrough/2.4/HwcHal.h
@@ -0,0 +1,402 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#ifndef LOG_TAG
+#warning "HwcHal.h included without LOG_TAG"
+#endif
+
+#include <type_traits>
+
+#include <android/hardware/graphics/composer/2.4/IComposerClient.h>
+#include <composer-hal/2.4/ComposerHal.h>
+#include <composer-passthrough/2.3/HwcHal.h>
+#include <hardware/hwcomposer_defs.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_4 {
+namespace passthrough {
+
+namespace detail {
+
+using common::V1_1::RenderIntent;
+using common::V1_2::ColorMode;
+using common::V1_2::Dataspace;
+using common::V1_2::Hdr;
+using common::V1_2::PixelFormat;
+using V2_1::Config;
+using V2_1::Display;
+using V2_1::Layer;
+using V2_4::Error;
+
+// HwcHalImpl implements V2_*::hal::ComposerHal on top of hwcomposer2
+template <typename Hal>
+class HwcHalImpl : public V2_3::passthrough::detail::HwcHalImpl<Hal> {
+  public:
+    void registerEventCallback_2_4(hal::ComposerHal::EventCallback_2_4* callback) override {
+        mEventCallback_2_4 = callback;
+
+        BaseType2_1::mDispatch.registerCallback(
+                mDevice, HWC2_CALLBACK_HOTPLUG, this,
+                reinterpret_cast<hwc2_function_pointer_t>(hotplugHook));
+        BaseType2_1::mDispatch.registerCallback(
+                mDevice, HWC2_CALLBACK_REFRESH, this,
+                reinterpret_cast<hwc2_function_pointer_t>(refreshHook));
+        BaseType2_1::mDispatch.registerCallback(
+                mDevice, HWC2_CALLBACK_VSYNC_2_4, this,
+                reinterpret_cast<hwc2_function_pointer_t>(vsync_2_4_Hook));
+        BaseType2_1::mDispatch.registerCallback(
+                mDevice, HWC2_CALLBACK_VSYNC_PERIOD_TIMING_CHANGED, this,
+                reinterpret_cast<hwc2_function_pointer_t>(vsyncPeriodTimingChangedHook));
+        BaseType2_1::mDispatch.registerCallback(
+                mDevice, HWC2_CALLBACK_SEAMLESS_POSSIBLE, this,
+                reinterpret_cast<hwc2_function_pointer_t>(seamlessPossibleHook));
+    }
+
+    void unregisterEventCallback_2_4() override {
+        // we assume the callback functions
+        //
+        //  - can be unregistered
+        //  - can be in-flight
+        //  - will never be called afterward
+        //
+        // which is likely incorrect
+        BaseType2_1::mDispatch.registerCallback(mDevice, HWC2_CALLBACK_HOTPLUG, this, nullptr);
+        BaseType2_1::mDispatch.registerCallback(mDevice, HWC2_CALLBACK_REFRESH, this, nullptr);
+        BaseType2_1::mDispatch.registerCallback(mDevice, HWC2_CALLBACK_VSYNC_2_4, this, nullptr);
+        BaseType2_1::mDispatch.registerCallback(mDevice, HWC2_CALLBACK_VSYNC_PERIOD_TIMING_CHANGED,
+                                                this, nullptr);
+        BaseType2_1::mDispatch.registerCallback(mDevice, HWC2_CALLBACK_SEAMLESS_POSSIBLE, this,
+                                                nullptr);
+
+        mEventCallback_2_4 = nullptr;
+    }
+
+    Error getDisplayCapabilities_2_4(
+            Display display,
+            std::vector<IComposerClient::DisplayCapability>* outCapabilities) override {
+        std::vector<V2_3::IComposerClient::DisplayCapability> capabilities;
+        V2_3::Error error_2_3 = BaseType2_3::getDisplayCapabilities(display, &capabilities);
+        Error error = static_cast<Error>(error_2_3);
+        if (error != Error::NONE) {
+            return error;
+        }
+        outCapabilities->clear();
+        outCapabilities->reserve(capabilities.size());
+        for (auto capability : capabilities) {
+            outCapabilities->push_back(static_cast<IComposerClient::DisplayCapability>(capability));
+        }
+        return Error::NONE;
+    }
+
+    Error getDisplayConnectionType(Display display,
+                                   IComposerClient::DisplayConnectionType* outType) override {
+        if (!mDispatch.getDisplayConnectionType) {
+            return Error::UNSUPPORTED;
+        }
+
+        uint32_t type = HWC2_DISPLAY_CONNECTION_TYPE_INTERNAL;
+        int32_t error = mDispatch.getDisplayConnectionType(mDevice, display, &type);
+        *outType = static_cast<IComposerClient::DisplayConnectionType>(type);
+        return static_cast<Error>(error);
+    }
+
+    Error getDisplayAttribute_2_4(Display display, Config config,
+                                  IComposerClient::Attribute attribute,
+                                  int32_t* outValue) override {
+        int32_t err = BaseType2_1::mDispatch.getDisplayAttribute(
+                mDevice, display, config, static_cast<int32_t>(attribute), outValue);
+        if (err != HWC2_ERROR_NONE && *outValue == -1) {
+            // Convert the error from hwcomposer2 to IComposerClient definition
+            return Error::BAD_PARAMETER;
+        }
+        return static_cast<Error>(err);
+    }
+
+    Error getDisplayVsyncPeriod(Display display, VsyncPeriodNanos* outVsyncPeriod) override {
+        if (!mDispatch.getDisplayVsyncPeriod) {
+            return Error::UNSUPPORTED;
+        }
+
+        int32_t error = mDispatch.getDisplayVsyncPeriod(mDevice, display, outVsyncPeriod);
+        if (error != HWC2_ERROR_NONE) {
+            return static_cast<Error>(error);
+        }
+        return Error::NONE;
+    }
+
+    Error setActiveConfigWithConstraints(
+            Display display, Config config,
+            const IComposerClient::VsyncPeriodChangeConstraints& vsyncPeriodChangeConstraints,
+            VsyncPeriodChangeTimeline* timeline) override {
+        if (!mDispatch.setActiveConfigWithConstraints) {
+            return Error::UNSUPPORTED;
+        }
+
+        hwc_vsync_period_change_constraints_t vsync_period_change_constraints;
+        vsync_period_change_constraints.desiredTimeNanos =
+                vsyncPeriodChangeConstraints.desiredTimeNanos;
+        vsync_period_change_constraints.seamlessRequired =
+                vsyncPeriodChangeConstraints.seamlessRequired;
+
+        hwc_vsync_period_change_timeline_t out_timeline;
+        int32_t error = mDispatch.setActiveConfigWithConstraints(
+                mDevice, display, config, &vsync_period_change_constraints, &out_timeline);
+        if (error != HWC2_ERROR_NONE) {
+            return static_cast<Error>(error);
+        }
+        timeline->newVsyncAppliedTimeNanos = out_timeline.newVsyncAppliedTimeNanos;
+        timeline->refreshRequired = out_timeline.refreshRequired;
+        timeline->refreshTimeNanos = out_timeline.refreshTimeNanos;
+        return Error::NONE;
+    }
+
+    Error setAutoLowLatencyMode(Display display, bool on) override {
+        if (!mDispatch.setAutoLowLatencyMode) {
+            return Error::UNSUPPORTED;
+        }
+
+        int32_t error = mDispatch.setAutoLowLatencyMode(mDevice, display, on);
+        if (error != HWC2_ERROR_NONE) {
+            return static_cast<Error>(error);
+        }
+        return Error::NONE;
+    }
+
+    Error getSupportedContentTypes(
+            Display display,
+            std::vector<IComposerClient::ContentType>* outSupportedContentTypes) override {
+        if (!mDispatch.getSupportedContentTypes) {
+            return Error::UNSUPPORTED;
+        }
+
+        uint32_t count = 0;
+        int32_t error = mDispatch.getSupportedContentTypes(mDevice, display, &count, nullptr);
+        if (error != HWC2_ERROR_NONE) {
+            return static_cast<Error>(error);
+        }
+
+        outSupportedContentTypes->resize(count);
+
+        error = mDispatch.getSupportedContentTypes(
+                mDevice, display, &count,
+                reinterpret_cast<std::underlying_type<IComposerClient::ContentType>::type*>(
+                        outSupportedContentTypes->data()));
+        if (error != HWC2_ERROR_NONE) {
+            *outSupportedContentTypes = std::vector<IComposerClient::ContentType>();
+            return static_cast<Error>(error);
+        }
+        return Error::NONE;
+    }
+
+    Error setContentType(Display display, IComposerClient::ContentType contentType) override {
+        if (!mDispatch.setContentType) {
+            return Error::UNSUPPORTED;
+        }
+
+        int32_t error =
+                mDispatch.setContentType(mDevice, display, static_cast<int32_t>(contentType));
+        if (error != HWC2_ERROR_NONE) {
+            return static_cast<Error>(error);
+        }
+        return Error::NONE;
+    }
+
+    Error validateDisplay_2_4(
+            Display display, std::vector<Layer>* outChangedLayers,
+            std::vector<IComposerClient::Composition>* outCompositionTypes,
+            uint32_t* outDisplayRequestMask, std::vector<Layer>* outRequestedLayers,
+            std::vector<uint32_t>* outRequestMasks,
+            IComposerClient::ClientTargetProperty* outClientTargetProperty) override {
+        auto err = static_cast<Error>(BaseType2_1::validateDisplay(
+                display, outChangedLayers, outCompositionTypes, outDisplayRequestMask,
+                outRequestedLayers, outRequestMasks));
+        if (err != Error::NONE) {
+            return err;
+        }
+
+        if (mDispatch.getClientTargetProperty) {
+            hwc_client_target_property_t clientTargetProperty;
+            err = static_cast<Error>(
+                    mDispatch.getClientTargetProperty(mDevice, display, &clientTargetProperty));
+            outClientTargetProperty->pixelFormat =
+                    static_cast<PixelFormat>(clientTargetProperty.pixelFormat);
+            outClientTargetProperty->dataspace =
+                    static_cast<Dataspace>(clientTargetProperty.dataspace);
+        }
+
+        return err;
+    }
+
+    Error setLayerGenericMetadata(Display display, Layer layer, const std::string& key,
+                                  bool mandatory, const std::vector<uint8_t>& value) override {
+        if (!mDispatch.setLayerGenericMetadata) {
+            return Error::UNSUPPORTED;
+        }
+
+        if (key.size() > std::numeric_limits<uint32_t>::max()) {
+            return Error::BAD_PARAMETER;
+        }
+
+        if (value.size() > std::numeric_limits<uint32_t>::max()) {
+            return Error::BAD_PARAMETER;
+        }
+
+        int32_t error = mDispatch.setLayerGenericMetadata(
+                mDevice, display, layer, static_cast<uint32_t>(key.size()), key.c_str(), mandatory,
+                static_cast<uint32_t>(value.size()), value.data());
+        return static_cast<Error>(error);
+    }
+
+    Error getLayerGenericMetadataKeys(
+            std::vector<IComposerClient::LayerGenericMetadataKey>* outKeys) override {
+        if (!mDispatch.getLayerGenericMetadataKey) {
+            return Error::UNSUPPORTED;
+        }
+
+        std::vector<IComposerClient::LayerGenericMetadataKey> keys;
+
+        uint32_t index = 0;
+        uint32_t keyLength = 0;
+        while (true) {
+            mDispatch.getLayerGenericMetadataKey(mDevice, index, &keyLength, nullptr, nullptr);
+            if (keyLength == 0) {
+                break;
+            }
+
+            IComposerClient::LayerGenericMetadataKey key;
+            std::string keyName;
+            keyName.resize(keyLength);
+            mDispatch.getLayerGenericMetadataKey(mDevice, index, &keyLength, keyName.data(),
+                                                 &key.mandatory);
+            key.name = keyName;
+            keys.emplace_back(std::move(key));
+
+            // Only attempt to load the first 100 keys to avoid an infinite loop
+            // if something goes wrong
+            if (++index > 100) {
+                break;
+            }
+        }
+
+        *outKeys = std::move(keys);
+        return Error::NONE;
+    }
+
+  protected:
+    bool initDispatch() override {
+        if (!BaseType2_3::initDispatch()) {
+            return false;
+        }
+
+        if (!BaseType2_1::initDispatch(HWC2_FUNCTION_GET_DISPLAY_VSYNC_PERIOD,
+                                       &mDispatch.getDisplayVsyncPeriod) ||
+            !BaseType2_1::initDispatch(HWC2_FUNCTION_SET_ACTIVE_CONFIG_WITH_CONSTRAINTS,
+                                       &mDispatch.setActiveConfigWithConstraints)) {
+            return false;
+        }
+
+        this->initOptionalDispatch(HWC2_FUNCTION_GET_DISPLAY_CONNECTION_TYPE,
+                                   &mDispatch.getDisplayConnectionType);
+        this->initOptionalDispatch(HWC2_FUNCTION_SET_AUTO_LOW_LATENCY_MODE,
+                                   &mDispatch.setAutoLowLatencyMode);
+        this->initOptionalDispatch(HWC2_FUNCTION_GET_SUPPORTED_CONTENT_TYPES,
+                                   &mDispatch.getSupportedContentTypes);
+        this->initOptionalDispatch(HWC2_FUNCTION_SET_CONTENT_TYPE, &mDispatch.setContentType);
+        this->initOptionalDispatch(HWC2_FUNCTION_GET_CLIENT_TARGET_PROPERTY,
+                                   &mDispatch.getClientTargetProperty);
+        this->initOptionalDispatch(HWC2_FUNCTION_SET_LAYER_GENERIC_METADATA,
+                                   &mDispatch.setLayerGenericMetadata);
+        this->initOptionalDispatch(HWC2_FUNCTION_GET_LAYER_GENERIC_METADATA_KEY,
+                                   &mDispatch.getLayerGenericMetadataKey);
+
+        return true;
+    }
+
+    static void hotplugHook(hwc2_callback_data_t callbackData, hwc2_display_t display,
+                            int32_t connected) {
+        auto hal = static_cast<HwcHalImpl*>(callbackData);
+        hal->mEventCallback_2_4->onHotplug(display,
+                                           static_cast<IComposerCallback::Connection>(connected));
+    }
+
+    static void refreshHook(hwc2_callback_data_t callbackData, hwc2_display_t display) {
+        auto hal = static_cast<HwcHalImpl*>(callbackData);
+        hal->mEventCallback_2_4->onRefresh(display);
+    }
+
+    static void vsyncHook(hwc2_callback_data_t callbackData, hwc2_display_t display,
+                          int64_t timestamp) {
+        auto hal = static_cast<HwcHalImpl*>(callbackData);
+        hal->mEventCallback_2_4->onVsync(display, timestamp);
+    }
+
+    static void vsync_2_4_Hook(hwc2_callback_data_t callbackData, hwc2_display_t display,
+                               int64_t timestamp, hwc2_vsync_period_t vsyncPeriodNanos) {
+        auto hal = static_cast<HwcHalImpl*>(callbackData);
+        hal->mEventCallback_2_4->onVsync_2_4(display, timestamp, vsyncPeriodNanos);
+    }
+
+    static void vsyncPeriodTimingChangedHook(hwc2_callback_data_t callbackData,
+                                             hwc2_display_t display,
+                                             hwc_vsync_period_change_timeline_t* updated_timeline) {
+        auto hal = static_cast<HwcHalImpl*>(callbackData);
+        VsyncPeriodChangeTimeline timeline;
+        timeline.newVsyncAppliedTimeNanos = updated_timeline->newVsyncAppliedTimeNanos;
+        timeline.refreshRequired = updated_timeline->refreshRequired;
+        timeline.refreshTimeNanos = updated_timeline->refreshTimeNanos;
+        hal->mEventCallback_2_4->onVsyncPeriodTimingChanged(display, timeline);
+    }
+
+    static void seamlessPossibleHook(hwc2_callback_data_t callbackData, hwc2_display_t display) {
+        auto hal = static_cast<HwcHalImpl*>(callbackData);
+        hal->mEventCallback_2_4->onSeamlessPossible(display);
+    }
+
+  private:
+    struct {
+        HWC2_PFN_GET_DISPLAY_CONNECTION_TYPE getDisplayConnectionType;
+        HWC2_PFN_GET_DISPLAY_VSYNC_PERIOD getDisplayVsyncPeriod;
+        HWC2_PFN_SET_ACTIVE_CONFIG_WITH_CONSTRAINTS setActiveConfigWithConstraints;
+        HWC2_PFN_SET_AUTO_LOW_LATENCY_MODE setAutoLowLatencyMode;
+        HWC2_PFN_GET_SUPPORTED_CONTENT_TYPES getSupportedContentTypes;
+        HWC2_PFN_SET_CONTENT_TYPE setContentType;
+        HWC2_PFN_GET_CLIENT_TARGET_PROPERTY getClientTargetProperty;
+        HWC2_PFN_SET_LAYER_GENERIC_METADATA setLayerGenericMetadata;
+        HWC2_PFN_GET_LAYER_GENERIC_METADATA_KEY getLayerGenericMetadataKey;
+    } mDispatch = {};
+
+    hal::ComposerHal::EventCallback_2_4* mEventCallback_2_4 = nullptr;
+
+    using BaseType2_1 = V2_1::passthrough::detail::HwcHalImpl<Hal>;
+    using BaseType2_3 = V2_3::passthrough::detail::HwcHalImpl<Hal>;
+    using BaseType2_1::mDevice;
+};
+
+}  // namespace detail
+
+using HwcHal = detail::HwcHalImpl<hal::ComposerHal>;
+
+}  // namespace passthrough
+}  // namespace V2_4
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.4/utils/passthrough/include/composer-passthrough/2.4/HwcLoader.h b/graphics/composer/2.4/utils/passthrough/include/composer-passthrough/2.4/HwcLoader.h
new file mode 100644
index 0000000..a7cc588
--- /dev/null
+++ b/graphics/composer/2.4/utils/passthrough/include/composer-passthrough/2.4/HwcLoader.h
@@ -0,0 +1,79 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#ifndef LOG_TAG
+#warning "HwcLoader.h included without LOG_TAG"
+#endif
+
+#include <composer-hal/2.4/Composer.h>
+#include <composer-hal/2.4/ComposerHal.h>
+#include <composer-passthrough/2.3/HwcLoader.h>
+#include <composer-passthrough/2.4/HwcHal.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_4 {
+namespace passthrough {
+
+class HwcLoader : public V2_3::passthrough::HwcLoader {
+  public:
+    static IComposer* load() {
+        const hw_module_t* module = loadModule();
+        if (!module) {
+            return nullptr;
+        }
+
+        auto hal = createHalWithAdapter(module);
+        if (!hal) {
+            return nullptr;
+        }
+
+        return createComposer(std::move(hal)).release();
+    }
+
+    // create a ComposerHal instance
+    static std::unique_ptr<hal::ComposerHal> createHal(const hw_module_t* module) {
+        auto hal = std::make_unique<HwcHal>();
+        return hal->initWithModule(module) ? std::move(hal) : nullptr;
+    }
+
+    // create a ComposerHal instance, insert an adapter if necessary
+    static std::unique_ptr<hal::ComposerHal> createHalWithAdapter(const hw_module_t* module) {
+        bool adapted;
+        hwc2_device_t* device = openDeviceWithAdapter(module, &adapted);
+        if (!device) {
+            return nullptr;
+        }
+        auto hal = std::make_unique<HwcHal>();
+        return hal->initWithDevice(std::move(device), !adapted) ? std::move(hal) : nullptr;
+    }
+
+    // create an IComposer instance
+    static std::unique_ptr<IComposer> createComposer(std::unique_ptr<hal::ComposerHal> hal) {
+        return hal::Composer::create(std::move(hal));
+    }
+};
+
+}  // namespace passthrough
+}  // namespace V2_4
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.4/utils/vts/Android.bp b/graphics/composer/2.4/utils/vts/Android.bp
new file mode 100644
index 0000000..673c15e
--- /dev/null
+++ b/graphics/composer/2.4/utils/vts/Android.bp
@@ -0,0 +1,43 @@
+//
+// Copyright 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_library_static {
+    name: "android.hardware.graphics.composer@2.4-vts",
+    defaults: ["hidl_defaults"],
+    srcs: [
+        "ComposerVts.cpp",
+        "GraphicsComposerCallback.cpp",
+    ],
+    static_libs: [
+        "VtsHalHidlTargetTestBase",
+        "android.hardware.graphics.composer@2.1",
+        "android.hardware.graphics.composer@2.2",
+        "android.hardware.graphics.composer@2.3-vts",
+        "android.hardware.graphics.composer@2.3",
+        "android.hardware.graphics.composer@2.4",
+    ],
+    header_libs: [
+        "android.hardware.graphics.composer@2.1-command-buffer",
+        "android.hardware.graphics.composer@2.2-command-buffer",
+        "android.hardware.graphics.composer@2.3-command-buffer",
+    ],
+    cflags: [
+        "-O0",
+        "-g",
+        "-DLOG_TAG=\"ComposerVts\"",
+    ],
+    export_include_dirs: ["include"],
+}
diff --git a/graphics/composer/2.4/utils/vts/ComposerVts.cpp b/graphics/composer/2.4/utils/vts/ComposerVts.cpp
new file mode 100644
index 0000000..8cdc452
--- /dev/null
+++ b/graphics/composer/2.4/utils/vts/ComposerVts.cpp
@@ -0,0 +1,147 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <composer-vts/2.4/ComposerVts.h>
+
+#include <VtsHalHidlTargetTestBase.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_4 {
+namespace vts {
+
+using V2_4::Error;
+
+Composer::Composer() : Composer(::testing::VtsHalHidlTargetTestBase::getService<IComposer>()) {}
+
+Composer::Composer(const std::string& name)
+    : Composer(::testing::VtsHalHidlTargetTestBase::getService<IComposer>(name)) {}
+
+Composer::Composer(const sp<IComposer>& composer)
+    : V2_3::vts::Composer(composer), mComposer(composer) {}
+
+std::unique_ptr<ComposerClient> Composer::createClient() {
+    std::unique_ptr<ComposerClient> client;
+    mComposer->createClient_2_4([&client](const auto& tmpError, const auto& tmpClient) {
+        ASSERT_EQ(Error::NONE, tmpError) << "failed to create client";
+        client = std::make_unique<ComposerClient>(tmpClient);
+    });
+
+    return client;
+}
+
+sp<IComposerClient> ComposerClient::getRaw() const {
+    return mClient;
+}
+
+Error ComposerClient::getDisplayCapabilities(
+        Display display, std::vector<IComposerClient::DisplayCapability>* outCapabilities) {
+    Error error = Error::NONE;
+    mClient->getDisplayCapabilities_2_4(display,
+                                        [&](const auto& tmpError, const auto& tmpCapabilities) {
+                                            error = tmpError;
+                                            *outCapabilities = tmpCapabilities;
+                                        });
+    return error;
+}
+
+Error ComposerClient::getDisplayConnectionType(Display display,
+                                               IComposerClient::DisplayConnectionType* outType) {
+    Error error = Error::NONE;
+    mClient->getDisplayConnectionType(display, [&](const auto& tmpError, const auto& tmpType) {
+        error = tmpError;
+        *outType = tmpType;
+    });
+    return error;
+}
+
+int32_t ComposerClient::getDisplayAttribute_2_4(
+        android::hardware::graphics::composer::V2_1::Display display,
+        android::hardware::graphics::composer::V2_1::Config config,
+        IComposerClient::Attribute attribute) {
+    int32_t value = 0;
+    mClient->getDisplayAttribute_2_4(
+            display, config, attribute, [&](const auto& tmpError, const auto& tmpValue) {
+                ASSERT_EQ(Error::NONE, tmpError) << "failed to get display attribute";
+                value = tmpValue;
+            });
+
+    return value;
+}
+
+void ComposerClient::registerCallback_2_4(const sp<IComposerCallback>& callback) {
+    mClient->registerCallback_2_4(callback);
+}
+
+Error ComposerClient::getDisplayVsyncPeriod(Display display, VsyncPeriodNanos* outVsyncPeriod) {
+    Error error = Error::NONE;
+    mClient->getDisplayVsyncPeriod(display, [&](const auto& tmpError, const auto& tmpVsyncPeriod) {
+        error = tmpError;
+        *outVsyncPeriod = tmpVsyncPeriod;
+    });
+    return error;
+}
+
+Error ComposerClient::setActiveConfigWithConstraints(
+        Display display, Config config,
+        const IComposerClient::VsyncPeriodChangeConstraints& vsyncPeriodChangeConstraints,
+        VsyncPeriodChangeTimeline* timeline) {
+    Error error = Error::NONE;
+    mClient->setActiveConfigWithConstraints(display, config, vsyncPeriodChangeConstraints,
+                                            [&](const auto& tmpError, const auto& tmpTimeline) {
+                                                error = tmpError;
+                                                *timeline = tmpTimeline;
+                                            });
+    return error;
+}
+
+Error ComposerClient::setAutoLowLatencyMode(Display display, bool on) {
+    return mClient->setAutoLowLatencyMode(display, on);
+}
+
+Error ComposerClient::getSupportedContentTypes(
+        Display display, std::vector<IComposerClient::ContentType>* outSupportedContentTypes) {
+    Error error = Error::NONE;
+    mClient->getSupportedContentTypes(
+            display, [&](const auto& tmpError, const auto& tmpSupportedContentTypes) {
+                error = tmpError;
+                *outSupportedContentTypes = tmpSupportedContentTypes;
+            });
+    return error;
+}
+
+Error ComposerClient::setContentType(Display display, IComposerClient::ContentType contentType) {
+    return mClient->setContentType(display, contentType);
+}
+
+Error ComposerClient::getLayerGenericMetadataKeys(
+        std::vector<IComposerClient::LayerGenericMetadataKey>* outKeys) {
+    Error error = Error::NONE;
+    mClient->getLayerGenericMetadataKeys([&](const auto tmpError, const auto& tmpKeys) {
+        error = tmpError;
+        *outKeys = tmpKeys;
+    });
+    return error;
+}
+
+}  // namespace vts
+}  // namespace V2_4
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.4/utils/vts/GraphicsComposerCallback.cpp b/graphics/composer/2.4/utils/vts/GraphicsComposerCallback.cpp
new file mode 100644
index 0000000..c9366a8
--- /dev/null
+++ b/graphics/composer/2.4/utils/vts/GraphicsComposerCallback.cpp
@@ -0,0 +1,137 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <composer-vts/2.4/GraphicsComposerCallback.h>
+
+namespace android::hardware::graphics::composer::V2_4::vts {
+
+void GraphicsComposerCallback::setVsyncAllowed(bool allowed) {
+    std::lock_guard<std::mutex> lock(mMutex);
+    mVsyncAllowed = allowed;
+}
+
+std::vector<Display> GraphicsComposerCallback::getDisplays() const {
+    std::lock_guard<std::mutex> lock(mMutex);
+    return std::vector<Display>(mDisplays.begin(), mDisplays.end());
+}
+
+int32_t GraphicsComposerCallback::getInvalidHotplugCount() const {
+    std::lock_guard<std::mutex> lock(mMutex);
+    return mInvalidHotplugCount;
+}
+
+int32_t GraphicsComposerCallback::getInvalidRefreshCount() const {
+    std::lock_guard<std::mutex> lock(mMutex);
+    return mInvalidRefreshCount;
+}
+
+int32_t GraphicsComposerCallback::getInvalidVsyncCount() const {
+    std::lock_guard<std::mutex> lock(mMutex);
+    return mInvalidVsyncCount;
+}
+
+int32_t GraphicsComposerCallback::getInvalidVsync_2_4Count() const {
+    std::lock_guard<std::mutex> lock(mMutex);
+    return mInvalidVsync_2_4Count;
+}
+
+int32_t GraphicsComposerCallback::getInvalidVsyncPeriodChangeCount() const {
+    std::lock_guard<std::mutex> lock(mMutex);
+    return mInvalidVsyncPeriodChangeCount;
+}
+
+int32_t GraphicsComposerCallback::getInvalidSeamlessPossibleCount() const {
+    std::lock_guard<std::mutex> lock(mMutex);
+    return mInvalidSeamlessPossibleCount;
+}
+
+std::optional<VsyncPeriodChangeTimeline>
+GraphicsComposerCallback::takeLastVsyncPeriodChangeTimeline() {
+    std::lock_guard<std::mutex> lock(mMutex);
+
+    std::optional<VsyncPeriodChangeTimeline> ret;
+    ret.swap(mTimeline);
+
+    return ret;
+}
+
+Return<void> GraphicsComposerCallback::onHotplug(Display display, Connection connection) {
+    std::lock_guard<std::mutex> lock(mMutex);
+
+    if (connection == Connection::CONNECTED) {
+        if (!mDisplays.insert(display).second) {
+            mInvalidHotplugCount++;
+        }
+    } else if (connection == Connection::DISCONNECTED) {
+        if (!mDisplays.erase(display)) {
+            mInvalidHotplugCount++;
+        }
+    }
+
+    return Void();
+}
+
+Return<void> GraphicsComposerCallback::onRefresh(Display display) {
+    std::lock_guard<std::mutex> lock(mMutex);
+
+    if (mDisplays.count(display) == 0) {
+        mInvalidRefreshCount++;
+    }
+
+    return Void();
+}
+
+Return<void> GraphicsComposerCallback::onVsync(Display, int64_t) {
+    std::lock_guard<std::mutex> lock(mMutex);
+
+    // On composer 2.4, onVsync is not expected at all
+    mInvalidVsyncCount++;
+
+    return Void();
+}
+
+Return<void> GraphicsComposerCallback::onVsync_2_4(Display display, int64_t, VsyncPeriodNanos) {
+    std::lock_guard<std::mutex> lock(mMutex);
+
+    if (!mVsyncAllowed || mDisplays.count(display) == 0) {
+        mInvalidVsync_2_4Count++;
+    }
+
+    return Void();
+}
+
+Return<void> GraphicsComposerCallback::onVsyncPeriodTimingChanged(
+        Display display, const VsyncPeriodChangeTimeline& updatedTimeline) {
+    std::lock_guard<std::mutex> lock(mMutex);
+
+    if (mDisplays.count(display) == 0) {
+        mInvalidVsyncPeriodChangeCount++;
+    }
+
+    mTimeline = updatedTimeline;
+
+    return Void();
+}
+
+Return<void> GraphicsComposerCallback::onSeamlessPossible(Display) {
+    std::lock_guard<std::mutex> lock(mMutex);
+
+    mInvalidSeamlessPossibleCount++;
+
+    return Void();
+}
+
+}  // namespace android::hardware::graphics::composer::V2_4::vts
\ No newline at end of file
diff --git a/graphics/composer/2.4/utils/vts/include/composer-vts/2.4/ComposerVts.h b/graphics/composer/2.4/utils/vts/include/composer-vts/2.4/ComposerVts.h
new file mode 100644
index 0000000..3dd8e50
--- /dev/null
+++ b/graphics/composer/2.4/utils/vts/include/composer-vts/2.4/ComposerVts.h
@@ -0,0 +1,108 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <memory>
+#include <vector>
+
+#include <VtsHalHidlTargetTestBase.h>
+#include <android/hardware/graphics/composer/2.4/IComposer.h>
+#include <android/hardware/graphics/composer/2.4/IComposerClient.h>
+#include <composer-vts/2.3/ComposerVts.h>
+#include <utils/StrongPointer.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_4 {
+namespace vts {
+
+using common::V1_1::RenderIntent;
+using common::V1_2::ColorMode;
+using common::V1_2::Dataspace;
+using common::V1_2::Hdr;
+using common::V1_2::PixelFormat;
+using V2_1::Config;
+using V2_1::Display;
+using V2_4::Error;
+using V2_4::IComposer;
+using V2_4::IComposerClient;
+using V2_4::VsyncPeriodNanos;
+
+class ComposerClient;
+
+// A wrapper to IComposer.
+class Composer : public V2_3::vts::Composer {
+  public:
+    Composer();
+    explicit Composer(const std::string& name);
+    explicit Composer(const sp<IComposer>& composer);
+
+    std::unique_ptr<ComposerClient> createClient();
+
+  private:
+    const sp<IComposer> mComposer;
+};
+
+// A wrapper to IComposerClient.
+class ComposerClient : public V2_3::vts::ComposerClient {
+  public:
+    explicit ComposerClient(const sp<IComposerClient>& client)
+        : V2_3::vts::ComposerClient(client), mClient(client) {}
+
+    sp<IComposerClient> getRaw() const;
+
+    Error getDisplayCapabilities(
+            Display display,
+            std::vector<IComposerClient::DisplayCapability>* outDisplayCapabilities);
+
+    Error getDisplayConnectionType(Display display,
+                                   IComposerClient::DisplayConnectionType* outType);
+
+    int32_t getDisplayAttribute_2_4(Display display, Config config,
+                                    IComposerClient::Attribute attribute);
+
+    void registerCallback_2_4(const sp<IComposerCallback>& callback);
+
+    Error getDisplayVsyncPeriod(Display display, VsyncPeriodNanos* outVsyncPeriods);
+
+    Error setActiveConfigWithConstraints(
+            Display display, Config config,
+            const IComposerClient::VsyncPeriodChangeConstraints& vsyncPeriodChangeConstraints,
+            VsyncPeriodChangeTimeline* timeline);
+
+    Error setAutoLowLatencyMode(Display display, bool on);
+
+    Error getSupportedContentTypes(
+            Display display, std::vector<IComposerClient::ContentType>* outSupportedContentTypes);
+
+    Error setContentType(Display display, IComposerClient::ContentType contentType);
+
+    Error getLayerGenericMetadataKeys(
+            std::vector<IComposerClient::LayerGenericMetadataKey>* outKeys);
+
+  private:
+    const sp<IComposerClient> mClient;
+};
+
+}  // namespace vts
+}  // namespace V2_4
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/composer/2.4/utils/vts/include/composer-vts/2.4/GraphicsComposerCallback.h b/graphics/composer/2.4/utils/vts/include/composer-vts/2.4/GraphicsComposerCallback.h
new file mode 100644
index 0000000..f4e23ae
--- /dev/null
+++ b/graphics/composer/2.4/utils/vts/include/composer-vts/2.4/GraphicsComposerCallback.h
@@ -0,0 +1,74 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#pragma once
+
+#include <android/hardware/graphics/composer/2.4/IComposerCallback.h>
+
+#include <mutex>
+#include <unordered_set>
+
+namespace android::hardware::graphics::composer::V2_4::vts {
+
+using Display = V2_1::Display;
+
+// IComposerCallback to be installed with IComposerClient::registerCallback.
+class GraphicsComposerCallback : public IComposerCallback {
+  public:
+    void setVsyncAllowed(bool allowed);
+
+    std::vector<Display> getDisplays() const;
+
+    int32_t getInvalidHotplugCount() const;
+
+    int32_t getInvalidRefreshCount() const;
+
+    int32_t getInvalidVsyncCount() const;
+
+    int32_t getInvalidVsync_2_4Count() const;
+
+    int32_t getInvalidVsyncPeriodChangeCount() const;
+
+    int32_t getInvalidSeamlessPossibleCount() const;
+
+    std::optional<VsyncPeriodChangeTimeline> takeLastVsyncPeriodChangeTimeline();
+
+  private:
+    Return<void> onHotplug(Display display, Connection connection) override;
+    Return<void> onRefresh(Display display) override;
+    Return<void> onVsync(Display display, int64_t) override;
+    Return<void> onVsync_2_4(Display display, int64_t, VsyncPeriodNanos vsyncPeriodNanos) override;
+    Return<void> onVsyncPeriodTimingChanged(
+            Display display, const VsyncPeriodChangeTimeline& updatedTimeline) override;
+    Return<void> onSeamlessPossible(Display display) override;
+
+    mutable std::mutex mMutex;
+    // the set of all currently connected displays
+    std::unordered_set<Display> mDisplays;
+    // true only when vsync is enabled
+    bool mVsyncAllowed = true;
+
+    std::optional<VsyncPeriodChangeTimeline> mTimeline;
+
+    // track invalid callbacks
+    int32_t mInvalidHotplugCount = 0;
+    int32_t mInvalidRefreshCount = 0;
+    int32_t mInvalidVsyncCount = 0;
+    int32_t mInvalidVsync_2_4Count = 0;
+    int32_t mInvalidVsyncPeriodChangeCount = 0;
+    int32_t mInvalidSeamlessPossibleCount = 0;
+};
+
+}  // namespace android::hardware::graphics::composer::V2_4::vts
diff --git a/graphics/composer/2.4/vts/functional/Android.bp b/graphics/composer/2.4/vts/functional/Android.bp
new file mode 100644
index 0000000..937af3d
--- /dev/null
+++ b/graphics/composer/2.4/vts/functional/Android.bp
@@ -0,0 +1,56 @@
+//
+// Copyright 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_test {
+    name: "VtsHalGraphicsComposerV2_4TargetTest",
+    defaults: ["VtsHalTargetTestDefaults"],
+    srcs: ["VtsHalGraphicsComposerV2_4TargetTest.cpp"],
+
+    // TODO(b/64437680): Assume these libs are always available on the device.
+    shared_libs: [
+        "libfmq",
+        "libsync",
+    ],
+    static_libs: [
+        "android.hardware.graphics.allocator@2.0",
+        "android.hardware.graphics.allocator@3.0",
+        "android.hardware.graphics.allocator@4.0",
+        "android.hardware.graphics.composer@2.1",
+        "android.hardware.graphics.composer@2.1-vts",
+        "android.hardware.graphics.composer@2.2",
+        "android.hardware.graphics.composer@2.2-vts",
+        "android.hardware.graphics.composer@2.3",
+        "android.hardware.graphics.composer@2.3-vts",
+        "android.hardware.graphics.composer@2.4",
+        "android.hardware.graphics.composer@2.4-vts",
+        "android.hardware.graphics.mapper@2.0",
+        "android.hardware.graphics.mapper@2.0-vts",
+        "android.hardware.graphics.mapper@2.1",
+        "android.hardware.graphics.mapper@2.1-vts",
+        "android.hardware.graphics.mapper@3.0",
+        "android.hardware.graphics.mapper@3.0-vts",
+        "android.hardware.graphics.mapper@4.0",
+        "android.hardware.graphics.mapper@4.0-vts",
+    ],
+    header_libs: [
+        "android.hardware.graphics.composer@2.1-command-buffer",
+        "android.hardware.graphics.composer@2.2-command-buffer",
+        "android.hardware.graphics.composer@2.3-command-buffer",
+        "android.hardware.graphics.composer@2.4-command-buffer",
+    ],
+    disable_framework: true,
+    test_suites: ["general-tests", "vts-core"],
+}
diff --git a/graphics/composer/2.4/vts/functional/OWNERS b/graphics/composer/2.4/vts/functional/OWNERS
new file mode 100644
index 0000000..b3ea6be
--- /dev/null
+++ b/graphics/composer/2.4/vts/functional/OWNERS
@@ -0,0 +1,8 @@
+# Graphics team
+lpy@google.com
+stoza@google.com
+vhau@google.com
+
+# VTS team
+yim@google.com
+zhuoyao@google.com
diff --git a/graphics/composer/2.4/vts/functional/VtsHalGraphicsComposerV2_4TargetTest.cpp b/graphics/composer/2.4/vts/functional/VtsHalGraphicsComposerV2_4TargetTest.cpp
new file mode 100644
index 0000000..f6b46ff
--- /dev/null
+++ b/graphics/composer/2.4/vts/functional/VtsHalGraphicsComposerV2_4TargetTest.cpp
@@ -0,0 +1,657 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "graphics_composer_hidl_hal_test@2.4"
+
+#include <algorithm>
+#include <regex>
+#include <thread>
+
+#include <android-base/logging.h>
+#include <android/hardware/graphics/mapper/2.0/IMapper.h>
+#include <composer-command-buffer/2.4/ComposerCommandBuffer.h>
+#include <composer-vts/2.1/TestCommandReader.h>
+#include <composer-vts/2.4/ComposerVts.h>
+#include <composer-vts/2.4/GraphicsComposerCallback.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
+#include <mapper-vts/2.0/MapperVts.h>
+#include <mapper-vts/3.0/MapperVts.h>
+#include <mapper-vts/4.0/MapperVts.h>
+#include <utils/Timers.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace composer {
+namespace V2_4 {
+namespace vts {
+namespace {
+
+using common::V1_0::BufferUsage;
+using common::V1_1::RenderIntent;
+using common::V1_2::ColorMode;
+using common::V1_2::Dataspace;
+using common::V1_2::PixelFormat;
+using mapper::V2_0::IMapper;
+using V2_1::Layer;
+using V2_2::Transform;
+using V2_2::vts::Gralloc;
+
+using ContentType = IComposerClient::ContentType;
+using DisplayCapability = IComposerClient::DisplayCapability;
+
+class GraphicsComposerHidlTest : public ::testing::TestWithParam<std::string> {
+  protected:
+    void SetUp() override {
+        ASSERT_NO_FATAL_FAILURE(
+                mComposer = std::make_unique<Composer>(IComposer::getService(GetParam())));
+        ASSERT_NO_FATAL_FAILURE(mComposerClient = mComposer->createClient());
+
+        mComposerCallback = new GraphicsComposerCallback;
+        mComposerClient->registerCallback_2_4(mComposerCallback);
+
+        // assume the first display is primary and is never removed
+        mPrimaryDisplay = waitForFirstDisplay();
+
+        mInvalidDisplayId = GetInvalidDisplayId();
+
+        // explicitly disable vsync
+        mComposerClient->setVsyncEnabled(mPrimaryDisplay, false);
+        mComposerCallback->setVsyncAllowed(false);
+
+        mWriter = std::make_unique<CommandWriterBase>(1024);
+        mReader = std::make_unique<V2_1::vts::TestCommandReader>();
+    }
+
+    void TearDown() override {
+        ASSERT_EQ(0, mReader->mErrors.size());
+        ASSERT_EQ(0, mReader->mCompositionChanges.size());
+        if (mComposerCallback != nullptr) {
+            EXPECT_EQ(0, mComposerCallback->getInvalidHotplugCount());
+            EXPECT_EQ(0, mComposerCallback->getInvalidRefreshCount());
+            EXPECT_EQ(0, mComposerCallback->getInvalidVsyncCount());
+            EXPECT_EQ(0, mComposerCallback->getInvalidVsync_2_4Count());
+            EXPECT_EQ(0, mComposerCallback->getInvalidVsyncPeriodChangeCount());
+            EXPECT_EQ(0, mComposerCallback->getInvalidSeamlessPossibleCount());
+        }
+    }
+
+    // returns an invalid display id (one that has not been registered to a
+    // display.  Currently assuming that a device will never have close to
+    // std::numeric_limit<uint64_t>::max() displays registered while running tests
+    Display GetInvalidDisplayId() {
+        std::vector<Display> validDisplays = mComposerCallback->getDisplays();
+        uint64_t id = std::numeric_limits<uint64_t>::max();
+        while (id > 0) {
+            if (std::find(validDisplays.begin(), validDisplays.end(), id) == validDisplays.end()) {
+                return id;
+            }
+            id--;
+        }
+
+        return 0;
+    }
+
+    // returns an invalid config id (one that has not been registered to a
+    // display).  Currently assuming that a device will never have close to
+    // std::numeric_limit<uint64_t>::max() configs registered while running tests
+    Display GetInvalidConfigId(Display display) {
+        std::vector<Config> validConfigs = mComposerClient->getDisplayConfigs(display);
+        uint64_t id = std::numeric_limits<uint64_t>::max();
+        while (id > 0) {
+            if (std::find(validConfigs.begin(), validConfigs.end(), id) == validConfigs.end()) {
+                return id;
+            }
+            id--;
+        }
+
+        return 0;
+    }
+
+    void execute() { mComposerClient->execute(mReader.get(), mWriter.get()); }
+
+    void forEachTwoConfigs(Display display, std::function<void(Config, Config)> func) {
+        const auto displayConfigs = mComposerClient->getDisplayConfigs(display);
+        for (const Config config1 : displayConfigs) {
+            for (const Config config2 : displayConfigs) {
+                if (config1 != config2) {
+                    func(config1, config2);
+                }
+            }
+        }
+    }
+
+    // use the slot count usually set by SF
+    static constexpr uint32_t kBufferSlotCount = 64;
+
+    void Test_setContentType(const ContentType& contentType, const char* contentTypeStr);
+    void Test_setContentTypeForDisplay(const Display& display,
+                                       const std::vector<ContentType>& capabilities,
+                                       const ContentType& contentType, const char* contentTypeStr);
+
+    std::unique_ptr<Composer> mComposer;
+    std::unique_ptr<ComposerClient> mComposerClient;
+    sp<GraphicsComposerCallback> mComposerCallback;
+    // the first display and is assumed never to be removed
+    Display mPrimaryDisplay;
+    Display mInvalidDisplayId;
+    std::unique_ptr<CommandWriterBase> mWriter;
+    std::unique_ptr<V2_1::vts::TestCommandReader> mReader;
+
+  private:
+    Display waitForFirstDisplay() {
+        while (true) {
+            std::vector<Display> displays = mComposerCallback->getDisplays();
+            if (displays.empty()) {
+                usleep(5 * 1000);
+                continue;
+            }
+
+            return displays[0];
+        }
+    }
+};
+
+// Tests for IComposerClient::Command.
+class GraphicsComposerHidlCommandTest : public GraphicsComposerHidlTest {
+  protected:
+    void SetUp() override {
+        ASSERT_NO_FATAL_FAILURE(GraphicsComposerHidlTest::SetUp());
+
+        ASSERT_NO_FATAL_FAILURE(mGralloc = std::make_unique<Gralloc>());
+
+        const Config activeConfig = mComposerClient->getActiveConfig(mPrimaryDisplay);
+        mDisplayWidth = mComposerClient->getDisplayAttribute_2_4(mPrimaryDisplay, activeConfig,
+                                                                 IComposerClient::Attribute::WIDTH);
+        mDisplayHeight = mComposerClient->getDisplayAttribute_2_4(
+                mPrimaryDisplay, activeConfig, IComposerClient::Attribute::HEIGHT);
+
+        mWriter = std::make_unique<CommandWriterBase>(1024);
+        mReader = std::make_unique<V2_1::vts::TestCommandReader>();
+    }
+
+    void TearDown() override {
+        ASSERT_EQ(0, mReader->mErrors.size());
+        ASSERT_NO_FATAL_FAILURE(GraphicsComposerHidlTest::TearDown());
+    }
+
+    const native_handle_t* allocate() {
+        return mGralloc->allocate(
+                /*width*/ 64, /*height*/ 64, /*layerCount*/ 1,
+                static_cast<common::V1_1::PixelFormat>(PixelFormat::RGBA_8888),
+                static_cast<uint64_t>(BufferUsage::CPU_WRITE_OFTEN | BufferUsage::CPU_READ_OFTEN));
+    }
+
+    void execute() { mComposerClient->execute(mReader.get(), mWriter.get()); }
+
+    void Test_setActiveConfigWithConstraints(
+            const IComposerClient::VsyncPeriodChangeConstraints& constraints, bool refreshMiss);
+
+    void sendRefreshFrame(const VsyncPeriodChangeTimeline&);
+
+    void waitForVsyncPeriodChange(Display display, const VsyncPeriodChangeTimeline& timeline,
+                                  int64_t desiredTimeNanos, int64_t oldPeriodNanos,
+                                  int64_t newPeriodNanos);
+
+    std::unique_ptr<CommandWriterBase> mWriter;
+    std::unique_ptr<V2_1::vts::TestCommandReader> mReader;
+    int32_t mDisplayWidth;
+    int32_t mDisplayHeight;
+
+  private:
+    std::unique_ptr<Gralloc> mGralloc;
+};
+
+TEST_P(GraphicsComposerHidlTest, getDisplayCapabilitiesBadDisplay) {
+    std::vector<IComposerClient::DisplayCapability> capabilities;
+    const auto error = mComposerClient->getDisplayCapabilities(mInvalidDisplayId, &capabilities);
+    EXPECT_EQ(Error::BAD_DISPLAY, error);
+}
+
+TEST_P(GraphicsComposerHidlTest, getDisplayCapabilities) {
+    for (Display display : mComposerCallback->getDisplays()) {
+        std::vector<IComposerClient::DisplayCapability> capabilities;
+        EXPECT_EQ(Error::NONE, mComposerClient->getDisplayCapabilities(display, &capabilities));
+    }
+}
+
+TEST_P(GraphicsComposerHidlTest, getDisplayConnectionType) {
+    IComposerClient::DisplayConnectionType type;
+    EXPECT_EQ(Error::BAD_DISPLAY,
+              mComposerClient->getDisplayConnectionType(mInvalidDisplayId, &type));
+
+    for (Display display : mComposerCallback->getDisplays()) {
+        EXPECT_EQ(Error::NONE, mComposerClient->getDisplayConnectionType(display, &type));
+    }
+}
+
+TEST_P(GraphicsComposerHidlTest, GetDisplayAttribute_2_4) {
+    std::vector<Config> configs = mComposerClient->getDisplayConfigs(mPrimaryDisplay);
+    for (auto config : configs) {
+        const std::array<IComposerClient::Attribute, 4> requiredAttributes = {{
+                IComposerClient::Attribute::WIDTH,
+                IComposerClient::Attribute::HEIGHT,
+                IComposerClient::Attribute::VSYNC_PERIOD,
+                IComposerClient::Attribute::CONFIG_GROUP,
+        }};
+        for (auto attribute : requiredAttributes) {
+            mComposerClient->getRaw()->getDisplayAttribute_2_4(
+                    mPrimaryDisplay, config, attribute,
+                    [&](const auto& tmpError, const auto& value) {
+                        EXPECT_EQ(Error::NONE, tmpError);
+                        EXPECT_NE(-1, value);
+                    });
+        }
+
+        const std::array<IComposerClient::Attribute, 2> optionalAttributes = {{
+                IComposerClient::Attribute::DPI_X,
+                IComposerClient::Attribute::DPI_Y,
+        }};
+        for (auto attribute : optionalAttributes) {
+            mComposerClient->getRaw()->getDisplayAttribute_2_4(
+                    mPrimaryDisplay, config, attribute, [&](const auto& tmpError, const auto&) {
+                        EXPECT_TRUE(tmpError == Error::NONE || tmpError == Error::UNSUPPORTED);
+                    });
+        }
+    }
+}
+
+TEST_P(GraphicsComposerHidlTest, getDisplayVsyncPeriod_BadDisplay) {
+    VsyncPeriodNanos vsyncPeriodNanos;
+    EXPECT_EQ(Error::BAD_DISPLAY,
+              mComposerClient->getDisplayVsyncPeriod(mInvalidDisplayId, &vsyncPeriodNanos));
+}
+
+TEST_P(GraphicsComposerHidlTest, getDisplayVsyncPeriod) {
+    for (Display display : mComposerCallback->getDisplays()) {
+        for (Config config : mComposerClient->getDisplayConfigs(display)) {
+            VsyncPeriodNanos expectedVsyncPeriodNanos = mComposerClient->getDisplayAttribute_2_4(
+                    display, config, IComposerClient::IComposerClient::Attribute::VSYNC_PERIOD);
+
+            mComposerClient->setActiveConfig(display, config);
+            VsyncPeriodNanos vsyncPeriodNanos;
+            int retryCount = 100;
+            do {
+                std::this_thread::sleep_for(10ms);
+                EXPECT_EQ(Error::NONE,
+                          mComposerClient->getDisplayVsyncPeriod(display, &vsyncPeriodNanos));
+                --retryCount;
+            } while (vsyncPeriodNanos != expectedVsyncPeriodNanos && retryCount > 0);
+
+            EXPECT_EQ(vsyncPeriodNanos, expectedVsyncPeriodNanos);
+        }
+    }
+}
+
+TEST_P(GraphicsComposerHidlTest, setActiveConfigWithConstraints_BadDisplay) {
+    VsyncPeriodChangeTimeline timeline;
+    IComposerClient::VsyncPeriodChangeConstraints constraints;
+
+    constraints.seamlessRequired = false;
+    constraints.desiredTimeNanos = systemTime();
+
+    EXPECT_EQ(Error::BAD_DISPLAY, mComposerClient->setActiveConfigWithConstraints(
+                                          mInvalidDisplayId, Config(0), constraints, &timeline));
+}
+
+TEST_P(GraphicsComposerHidlTest, setActiveConfigWithConstraints_BadConfig) {
+    VsyncPeriodChangeTimeline timeline;
+    IComposerClient::VsyncPeriodChangeConstraints constraints;
+
+    constraints.seamlessRequired = false;
+    constraints.desiredTimeNanos = systemTime();
+
+    for (Display display : mComposerCallback->getDisplays()) {
+        Config invalidConfigId = GetInvalidConfigId(display);
+        EXPECT_EQ(Error::BAD_CONFIG, mComposerClient->setActiveConfigWithConstraints(
+                                             display, invalidConfigId, constraints, &timeline));
+    }
+}
+
+TEST_P(GraphicsComposerHidlTest, setActiveConfigWithConstraints_SeamlessNotAllowed) {
+    VsyncPeriodChangeTimeline timeline;
+    IComposerClient::VsyncPeriodChangeConstraints constraints;
+
+    constraints.seamlessRequired = true;
+    constraints.desiredTimeNanos = systemTime();
+
+    for (Display display : mComposerCallback->getDisplays()) {
+        forEachTwoConfigs(display, [&](Config config1, Config config2) {
+            const auto configGroup1 = mComposerClient->getDisplayAttribute_2_4(
+                    display, config1, IComposerClient::IComposerClient::Attribute::CONFIG_GROUP);
+            const auto configGroup2 = mComposerClient->getDisplayAttribute_2_4(
+                    display, config2, IComposerClient::IComposerClient::Attribute::CONFIG_GROUP);
+            if (configGroup1 != configGroup2) {
+                mComposerClient->setActiveConfig(display, config1);
+                EXPECT_EQ(Error::SEAMLESS_NOT_ALLOWED,
+                          mComposerClient->setActiveConfigWithConstraints(display, config2,
+                                                                          constraints, &timeline));
+            }
+        });
+    }
+}
+
+static inline auto toTimePoint(nsecs_t time) {
+    return std::chrono::time_point<std::chrono::steady_clock>(std::chrono::nanoseconds(time));
+}
+
+void GraphicsComposerHidlCommandTest::sendRefreshFrame(const VsyncPeriodChangeTimeline& timeline) {
+    // Refresh time should be before newVsyncAppliedTimeNanos
+    EXPECT_LT(timeline.refreshTimeNanos, timeline.newVsyncAppliedTimeNanos);
+
+    std::this_thread::sleep_until(toTimePoint(timeline.refreshTimeNanos));
+
+    mWriter->selectDisplay(mPrimaryDisplay);
+    mComposerClient->setPowerMode(mPrimaryDisplay, V2_1::IComposerClient::PowerMode::ON);
+    mComposerClient->setColorMode_2_3(mPrimaryDisplay, ColorMode::NATIVE,
+                                      RenderIntent::COLORIMETRIC);
+
+    auto handle = allocate();
+    ASSERT_NE(nullptr, handle);
+
+    IComposerClient::Rect displayFrame{0, 0, mDisplayWidth, mDisplayHeight};
+
+    Layer layer;
+    ASSERT_NO_FATAL_FAILURE(
+            layer = mComposerClient->createLayer(mPrimaryDisplay, kBufferSlotCount));
+    mWriter->selectLayer(layer);
+    mWriter->setLayerCompositionType(IComposerClient::Composition::DEVICE);
+    mWriter->setLayerDisplayFrame(displayFrame);
+    mWriter->setLayerPlaneAlpha(1);
+    mWriter->setLayerSourceCrop({0, 0, (float)mDisplayWidth, (float)mDisplayHeight});
+    mWriter->setLayerTransform(static_cast<Transform>(0));
+    mWriter->setLayerVisibleRegion(std::vector<IComposerClient::Rect>(1, displayFrame));
+    mWriter->setLayerZOrder(10);
+    mWriter->setLayerBlendMode(IComposerClient::BlendMode::NONE);
+    mWriter->setLayerSurfaceDamage(std::vector<IComposerClient::Rect>(1, displayFrame));
+    mWriter->setLayerBuffer(0, handle, -1);
+    mWriter->setLayerDataspace(Dataspace::UNKNOWN);
+
+    mWriter->validateDisplay();
+    execute();
+    if (mReader->mCompositionChanges.size() != 0) {
+        GTEST_SUCCEED() << "Composition change requested, skipping test";
+        return;
+    }
+
+    ASSERT_EQ(0, mReader->mErrors.size());
+    mWriter->presentDisplay();
+    execute();
+    ASSERT_EQ(0, mReader->mErrors.size());
+
+    mWriter->selectLayer(layer);
+    auto handle2 = allocate();
+    ASSERT_NE(nullptr, handle2);
+    mWriter->setLayerBuffer(0, handle2, -1);
+    mWriter->setLayerSurfaceDamage(std::vector<IComposerClient::Rect>(1, {0, 0, 10, 10}));
+    mWriter->presentDisplay();
+    execute();
+}
+
+void GraphicsComposerHidlCommandTest::waitForVsyncPeriodChange(
+        Display display, const VsyncPeriodChangeTimeline& timeline, int64_t desiredTimeNanos,
+        int64_t oldPeriodNanos, int64_t newPeriodNanos) {
+    const auto CHANGE_DEADLINE = toTimePoint(timeline.newVsyncAppliedTimeNanos) + 100ms;
+    while (std::chrono::steady_clock::now() <= CHANGE_DEADLINE) {
+        VsyncPeriodNanos vsyncPeriodNanos;
+        EXPECT_EQ(Error::NONE, mComposerClient->getDisplayVsyncPeriod(display, &vsyncPeriodNanos));
+        if (systemTime() <= desiredTimeNanos) {
+            EXPECT_EQ(vsyncPeriodNanos, oldPeriodNanos);
+        } else if (vsyncPeriodNanos == newPeriodNanos) {
+            break;
+        }
+        std::this_thread::sleep_for(std::chrono::nanoseconds(oldPeriodNanos));
+    }
+}
+
+void GraphicsComposerHidlCommandTest::Test_setActiveConfigWithConstraints(
+        const IComposerClient::VsyncPeriodChangeConstraints& constraints, bool refreshMiss) {
+    VsyncPeriodChangeTimeline timeline = {};
+
+    for (Display display : mComposerCallback->getDisplays()) {
+        forEachTwoConfigs(display, [&](Config config1, Config config2) {
+            mComposerClient->setActiveConfig(display, config1);
+
+            int32_t vsyncPeriod1 = mComposerClient->getDisplayAttribute_2_4(
+                    display, config1, IComposerClient::IComposerClient::Attribute::VSYNC_PERIOD);
+            int32_t vsyncPeriod2 = mComposerClient->getDisplayAttribute_2_4(
+                    display, config2, IComposerClient::IComposerClient::Attribute::VSYNC_PERIOD);
+
+            if (vsyncPeriod1 == vsyncPeriod2) {
+                return;  // continue
+            }
+
+            EXPECT_EQ(Error::NONE, mComposerClient->setActiveConfigWithConstraints(
+                                           display, config2, constraints, &timeline));
+
+            EXPECT_TRUE(timeline.newVsyncAppliedTimeNanos >= constraints.desiredTimeNanos);
+            // Refresh rate should change within a reasonable time
+            constexpr std::chrono::nanoseconds kReasonableTimeForChange = 1s;  // 1 second
+            EXPECT_TRUE(timeline.newVsyncAppliedTimeNanos - constraints.desiredTimeNanos <=
+                        kReasonableTimeForChange.count());
+
+            if (timeline.refreshRequired) {
+                if (refreshMiss) {
+                    // Miss the refresh frame on purpose to make sure the implementation sends a
+                    // callback
+                    std::this_thread::sleep_until(toTimePoint(timeline.refreshTimeNanos) + 100ms);
+                }
+                sendRefreshFrame(timeline);
+            }
+            waitForVsyncPeriodChange(display, timeline, constraints.desiredTimeNanos, vsyncPeriod1,
+                                     vsyncPeriod2);
+
+            // At this point the refresh rate should have changed already, however in rare
+            // cases the implementation might have missed the deadline. In this case a new
+            // timeline should have been provided.
+            auto newTimelime = mComposerCallback->takeLastVsyncPeriodChangeTimeline();
+            if (timeline.refreshRequired && refreshMiss) {
+                EXPECT_TRUE(newTimelime.has_value());
+            }
+
+            if (newTimelime.has_value()) {
+                if (timeline.refreshRequired) {
+                    sendRefreshFrame(newTimelime.value());
+                }
+                waitForVsyncPeriodChange(display, newTimelime.value(), constraints.desiredTimeNanos,
+                                         vsyncPeriod1, vsyncPeriod2);
+            }
+
+            VsyncPeriodNanos vsyncPeriodNanos;
+            EXPECT_EQ(Error::NONE,
+                      mComposerClient->getDisplayVsyncPeriod(display, &vsyncPeriodNanos));
+            EXPECT_EQ(vsyncPeriodNanos, vsyncPeriod2);
+        });
+    }
+}
+
+TEST_P(GraphicsComposerHidlCommandTest, setActiveConfigWithConstraints) {
+    IComposerClient::VsyncPeriodChangeConstraints constraints;
+
+    constraints.seamlessRequired = false;
+    constraints.desiredTimeNanos = systemTime();
+    Test_setActiveConfigWithConstraints(constraints, false);
+}
+
+TEST_P(GraphicsComposerHidlCommandTest, setActiveConfigWithConstraints_Delayed) {
+    IComposerClient::VsyncPeriodChangeConstraints constraints;
+
+    constexpr nsecs_t kDelayForChange = 300'000'000;  // 300ms
+    constraints.seamlessRequired = false;
+    constraints.desiredTimeNanos = systemTime() + kDelayForChange;
+    Test_setActiveConfigWithConstraints(constraints, false);
+}
+
+TEST_P(GraphicsComposerHidlCommandTest, setActiveConfigWithConstraints_MissRefresh) {
+    IComposerClient::VsyncPeriodChangeConstraints constraints;
+
+    constraints.seamlessRequired = false;
+    constraints.desiredTimeNanos = systemTime();
+    Test_setActiveConfigWithConstraints(constraints, true);
+}
+
+TEST_P(GraphicsComposerHidlTest, setAutoLowLatencyModeBadDisplay) {
+    EXPECT_EQ(Error::BAD_DISPLAY, mComposerClient->setAutoLowLatencyMode(mInvalidDisplayId, true));
+    EXPECT_EQ(Error::BAD_DISPLAY, mComposerClient->setAutoLowLatencyMode(mInvalidDisplayId, false));
+}
+
+TEST_P(GraphicsComposerHidlTest, setAutoLowLatencyMode) {
+    for (Display display : mComposerCallback->getDisplays()) {
+        std::vector<DisplayCapability> capabilities;
+        const auto error = mComposerClient->getDisplayCapabilities(display, &capabilities);
+        EXPECT_EQ(Error::NONE, error);
+
+        const bool allmSupport =
+                std::find(capabilities.begin(), capabilities.end(),
+                          DisplayCapability::AUTO_LOW_LATENCY_MODE) != capabilities.end();
+
+        if (!allmSupport) {
+            EXPECT_EQ(Error::UNSUPPORTED,
+                      mComposerClient->setAutoLowLatencyMode(mPrimaryDisplay, true));
+            EXPECT_EQ(Error::UNSUPPORTED,
+                      mComposerClient->setAutoLowLatencyMode(mPrimaryDisplay, false));
+            GTEST_SUCCEED() << "Auto Low Latency Mode is not supported on display "
+                            << to_string(display) << ", skipping test";
+            return;
+        }
+
+        EXPECT_EQ(Error::NONE, mComposerClient->setAutoLowLatencyMode(mPrimaryDisplay, true));
+        EXPECT_EQ(Error::NONE, mComposerClient->setAutoLowLatencyMode(mPrimaryDisplay, false));
+    }
+}
+
+TEST_P(GraphicsComposerHidlTest, getSupportedContentTypesBadDisplay) {
+    std::vector<ContentType> supportedContentTypes;
+    const auto error =
+            mComposerClient->getSupportedContentTypes(mInvalidDisplayId, &supportedContentTypes);
+    EXPECT_EQ(Error::BAD_DISPLAY, error);
+}
+
+TEST_P(GraphicsComposerHidlTest, getSupportedContentTypes) {
+    std::vector<ContentType> supportedContentTypes;
+    for (Display display : mComposerCallback->getDisplays()) {
+        supportedContentTypes.clear();
+        const auto error =
+                mComposerClient->getSupportedContentTypes(display, &supportedContentTypes);
+        const bool noneSupported =
+                std::find(supportedContentTypes.begin(), supportedContentTypes.end(),
+                          ContentType::NONE) != supportedContentTypes.end();
+        EXPECT_EQ(Error::NONE, error);
+        EXPECT_FALSE(noneSupported);
+    }
+}
+
+TEST_P(GraphicsComposerHidlTest, setContentTypeNoneAlwaysAccepted) {
+    for (Display display : mComposerCallback->getDisplays()) {
+        const auto error = mComposerClient->setContentType(display, ContentType::NONE);
+        EXPECT_NE(Error::UNSUPPORTED, error);
+    }
+}
+
+TEST_P(GraphicsComposerHidlTest, setContentTypeBadDisplay) {
+    const auto types = {ContentType::NONE, ContentType::GRAPHICS, ContentType::PHOTO,
+                        ContentType::CINEMA, ContentType::GAME};
+    for (auto type : types) {
+        EXPECT_EQ(Error::BAD_DISPLAY, mComposerClient->setContentType(mInvalidDisplayId, type));
+    }
+}
+
+void GraphicsComposerHidlTest::Test_setContentTypeForDisplay(
+        const Display& display, const std::vector<ContentType>& capabilities,
+        const ContentType& contentType, const char* contentTypeStr) {
+    const bool contentTypeSupport =
+            std::find(capabilities.begin(), capabilities.end(), contentType) != capabilities.end();
+
+    if (!contentTypeSupport) {
+        EXPECT_EQ(Error::UNSUPPORTED, mComposerClient->setContentType(display, contentType));
+        GTEST_SUCCEED() << contentTypeStr << " content type is not supported on display "
+                        << to_string(display) << ", skipping test";
+        return;
+    }
+
+    EXPECT_EQ(Error::NONE, mComposerClient->setContentType(display, contentType));
+    EXPECT_EQ(Error::NONE, mComposerClient->setContentType(display, ContentType::NONE));
+}
+
+void GraphicsComposerHidlTest::Test_setContentType(const ContentType& contentType,
+                                                   const char* contentTypeStr) {
+    for (Display display : mComposerCallback->getDisplays()) {
+        std::vector<ContentType> supportedContentTypes;
+        const auto error =
+                mComposerClient->getSupportedContentTypes(display, &supportedContentTypes);
+        EXPECT_EQ(Error::NONE, error);
+
+        Test_setContentTypeForDisplay(display, supportedContentTypes, contentType, contentTypeStr);
+    }
+}
+
+TEST_P(GraphicsComposerHidlTest, setGraphicsContentType) {
+    Test_setContentType(ContentType::GRAPHICS, "GRAPHICS");
+}
+
+TEST_P(GraphicsComposerHidlTest, setPhotoContentType) {
+    Test_setContentType(ContentType::PHOTO, "PHOTO");
+}
+
+TEST_P(GraphicsComposerHidlTest, setCinemaContentType) {
+    Test_setContentType(ContentType::CINEMA, "CINEMA");
+}
+
+TEST_P(GraphicsComposerHidlTest, setGameContentType) {
+    Test_setContentType(ContentType::GAME, "GAME");
+}
+
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, GraphicsComposerHidlTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IComposer::descriptor)),
+        android::hardware::PrintInstanceNameToString);
+
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, GraphicsComposerHidlCommandTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IComposer::descriptor)),
+        android::hardware::PrintInstanceNameToString);
+
+TEST_F(GraphicsComposerHidlCommandTest, getLayerGenericMetadataKeys) {
+    std::vector<IComposerClient::LayerGenericMetadataKey> keys;
+    mComposerClient->getLayerGenericMetadataKeys(&keys);
+
+    std::regex reverseDomainName("^[a-zA-Z-]{2,}(\\.[a-zA-Z0-9-]+)+$");
+    std::unordered_set<std::string> uniqueNames;
+    for (const auto& key : keys) {
+        std::string name(key.name.c_str());
+
+        // Keys must not start with 'android' or 'com.android'
+        ASSERT_FALSE(name.find("android") == 0);
+        ASSERT_FALSE(name.find("com.android") == 0);
+
+        // Keys must be in reverse domain name format
+        ASSERT_TRUE(std::regex_match(name, reverseDomainName));
+
+        // Keys must be unique within this list
+        const auto& [iter, inserted] = uniqueNames.insert(name);
+        ASSERT_TRUE(inserted);
+    }
+}
+
+}  // namespace
+}  // namespace vts
+}  // namespace V2_4
+}  // namespace composer
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/mapper/4.0/Android.bp b/graphics/mapper/4.0/Android.bp
new file mode 100644
index 0000000..42c4942
--- /dev/null
+++ b/graphics/mapper/4.0/Android.bp
@@ -0,0 +1,21 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.graphics.mapper@4.0",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+        support_system_process: true,
+    },
+    srcs: [
+        "types.hal",
+        "IMapper.hal",
+    ],
+    interfaces: [
+        "android.hardware.graphics.common@1.0",
+        "android.hardware.graphics.common@1.1",
+        "android.hardware.graphics.common@1.2",
+        "android.hidl.base@1.0",
+    ],
+    gen_java: false,
+}
diff --git a/graphics/mapper/4.0/IMapper.hal b/graphics/mapper/4.0/IMapper.hal
new file mode 100644
index 0000000..93c85bd
--- /dev/null
+++ b/graphics/mapper/4.0/IMapper.hal
@@ -0,0 +1,648 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.mapper@4.0;
+
+import android.hardware.graphics.common@1.2::BufferUsage;
+import android.hardware.graphics.common@1.2::PixelFormat;
+import android.hardware.graphics.common@1.2::Rect;
+
+interface IMapper {
+    struct BufferDescriptorInfo {
+        /**
+         * The name of the buffer. Useful for debugging/tracing.
+         */
+        string name;
+
+        /**
+         * The width specifies how many columns of pixels must be in the
+         * allocated buffer, but does not necessarily represent the offset in
+         * columns between the same column in adjacent rows. The rows may be
+         * padded.
+         */
+        uint32_t width;
+
+        /**
+         * The height specifies how many rows of pixels must be in the
+         * allocated buffer.
+         */
+        uint32_t height;
+
+        /**
+         * The number of image layers that must be in the allocated buffer.
+         */
+        uint32_t layerCount;
+
+        /**
+         * Buffer pixel format.
+         */
+        PixelFormat format;
+
+        /**
+         * Buffer usage mask; valid flags can be found in the definition of
+         * BufferUsage.
+         */
+        bitfield<BufferUsage> usage;
+
+        /**
+         * The size in bytes of the reserved region associated with the buffer.
+         * See getReservedRegion for more information.
+         */
+        uint64_t reservedSize;
+    };
+
+    struct Rect {
+        int32_t left;
+        int32_t top;
+        int32_t width;
+        int32_t height;
+    };
+
+    /**
+     * Creates a buffer descriptor. The descriptor can be used with IAllocator
+     * to allocate buffers.
+     *
+     * Since the buffer descriptor fully describes a buffer, any device
+     * dependent or device independent checks must be performed here whenever
+     * possible. When layered buffers are not supported, this function must
+     * return `UNSUPPORTED` if `description.layers` is great than 1. This
+     * function may return `UNSUPPORTED` if `description.reservedSize` is
+     * larger than a page.
+     *
+     * @param description Attributes of the descriptor.
+     * @return error Error status of the call, which may be
+     *     - `NONE` upon success.
+     *     - `BAD_VALUE` if any of the specified attributes are invalid or
+     *       inconsistent.
+     *     - `NO_RESOURCES` if the creation cannot be fullfilled due to
+     *       unavailability of resources.
+     *     - `UNSUPPORTED` when any of the specified attributes are not
+     *       supported.
+     * @return descriptor Newly created buffer descriptor.
+     */
+    createDescriptor(BufferDescriptorInfo description)
+            generates (Error error,
+                       BufferDescriptor descriptor);
+
+    /**
+     * Imports a raw buffer handle to create an imported buffer handle for use
+     * with the rest of the mapper or with other in-process libraries.
+     *
+     * A buffer handle is considered raw when it is cloned (e.g., with
+     * `native_handle_clone()`) from another buffer handle locally, or when it
+     * is received from another HAL server/client or another process. A raw
+     * buffer handle must not be used to access the underlying graphic
+     * buffer. It must be imported to create an imported handle first.
+     *
+     * This function must at least validate the raw handle before creating the
+     * imported handle. It must also support importing the same raw handle
+     * multiple times to create multiple imported handles. The imported handle
+     * must be considered valid everywhere in the process, including in
+     * another instance of the mapper.
+     *
+     * Because of passthrough HALs, a raw buffer handle received from a HAL
+     * may actually have been imported in the process. importBuffer() must treat
+     * such a handle as if it is raw and must not return `BAD_BUFFER`. The
+     * returned handle is independent from the input handle as usual, and
+     * freeBuffer() must be called on it when it is no longer needed.
+     *
+     * @param rawHandle Raw buffer handle to import.
+     * @return error Error status of the call, which may be
+     *     - `NONE` upon success.
+     *     - `BAD_BUFFER` if the raw handle is invalid.
+     *     - `NO_RESOURCES` if the raw handle cannot be imported due to
+     *       unavailability of resources.
+     * @return buffer Imported buffer handle that has the type
+     *     `buffer_handle_t` which is a handle type.
+     */
+    importBuffer(handle rawHandle) generates (Error error, pointer buffer);
+
+    /**
+     * Frees a buffer handle. Buffer handles returned by importBuffer() must be
+     * freed with this function when no longer needed.
+     *
+     * This function must free up all resources allocated by importBuffer() for
+     * the imported handle. For example, if the imported handle was created
+     * with `native_handle_create()`, this function must call
+     * `native_handle_close()` and `native_handle_delete()`.
+     *
+     * @param buffer Imported buffer handle.
+     * @return error Error status of the call, which may be
+     *     - `NONE` upon success.
+     *     - `BAD_BUFFER` if the buffer is invalid.
+     */
+    freeBuffer(pointer buffer) generates (Error error);
+
+    /**
+     * Validates that the buffer can be safely accessed by a caller who assumes
+     * the specified @p description and @p stride. This must at least validate
+     * that the buffer size is large enough. Validating the buffer against
+     * individual buffer attributes is optional.
+     *
+     * @param buffer Buffer to validate against.
+     * @param description Attributes of the buffer.
+     * @param stride Stride returned by IAllocator::allocate().
+     * @return error Error status of the call, which may be
+     *     - `NONE` upon success.
+     *     - `BAD_BUFFER` if the buffer is invalid.
+     *     - `BAD_VALUE` if the buffer cannot be safely accessed.
+     */
+    validateBufferSize(pointer buffer,
+                       BufferDescriptorInfo description,
+                       uint32_t stride)
+            generates (Error error);
+
+    /**
+     * Calculates the transport size of a buffer. An imported buffer handle is a
+     * raw buffer handle with the process-local runtime data appended. This
+     * function, for example, allows a caller to omit the process-local runtime
+     * data at the tail when serializing the imported buffer handle.
+     *
+     * Note that a client might or might not omit the process-local runtime data
+     * when sending an imported buffer handle. The mapper must support both
+     * cases on the receiving end.
+     *
+     * @param buffer Buffer to get the transport size from.
+     * @return error Error status of the call, which may be
+     *     - `NONE` upon success.
+     *     - `BAD_BUFFER` if the buffer is invalid.
+     * @return numFds The number of file descriptors needed for transport.
+     * @return numInts The number of integers needed for transport.
+     */
+    getTransportSize(pointer buffer)
+            generates (Error error,
+                       uint32_t numFds,
+                       uint32_t numInts);
+
+    /**
+     * Locks the given buffer for the specified CPU usage.
+     *
+     * Locking the same buffer simultaneously from multiple threads is
+     * permitted, but if any of the threads attempt to lock the buffer for
+     * writing, the behavior is undefined, except that it must not cause
+     * process termination or block the client indefinitely. Leaving the
+     * buffer content in an indeterminate state or returning an error are both
+     * acceptable.
+     *
+     * 1D buffers (width = size in bytes, height = 1, pixel_format = BLOB) must
+     * "lock in place". The buffers must be directly accessible via mapping.
+     *
+     * The client must not modify the content of the buffer outside of
+     * @p accessRegion, and the device need not guarantee that content outside
+     * of @p accessRegion is valid for reading. The result of reading or writing
+     * outside of @p accessRegion is undefined, except that it must not cause
+     * process termination.
+     *
+     * An accessRegion of all-zeros means the entire buffer. That is, it is
+     * equivalent to '(0,0)-(buffer width, buffer height)'.
+     *
+     * This function can lock both single-planar and multi-planar formats. The caller
+     * should use get() to get information about the buffer they are locking.
+     * get() can be used to get information about the planes, offsets, stride,
+     * etc.
+     *
+     * This function must also work on buffers with
+     * `AHARDWAREBUFFER_FORMAT_Y8Cb8Cr8_*` if supported by the device, as well
+     * as with any other formats requested by multimedia codecs when they are
+     * configured with a flexible-YUV-compatible color format.
+     *
+     * On success, @p data must be filled with a pointer to the locked buffer
+     * memory. This address will represent the top-left corner of the entire
+     * buffer, even if @p accessRegion does not begin at the top-left corner.
+     *
+     * The locked buffer must adhere to the format requested at allocation time
+     * in the BufferDescriptorInfo.
+     *
+     * @param buffer Buffer to lock.
+     * @param cpuUsage CPU usage flags to request. See +ndk
+     *     libnativewindow#AHardwareBuffer_UsageFlags for possible values.
+     * @param accessRegion Portion of the buffer that the client intends to
+     *     access.
+     * @param acquireFence Handle containing a file descriptor referring to a
+     *     sync fence object, which will be signaled when it is safe for the
+     *     mapper to lock the buffer. @p acquireFence may be an empty fence if
+     *     it is already safe to lock.
+     * @return error Error status of the call, which may be
+     *     - `NONE` upon success.
+     *     - `BAD_BUFFER` if the buffer is invalid or is incompatible with this
+     *       function.
+     *     - `BAD_VALUE` if @p cpuUsage is 0, contains non-CPU usage flags, or
+     *       is incompatible with the buffer. Also if the @p accessRegion is
+     *       outside the bounds of the buffer or the accessRegion is invalid.
+     *     - `NO_RESOURCES` if the buffer cannot be locked at this time. Note
+     *       that locking may succeed at a later time.
+     * @return data CPU-accessible pointer to the buffer data.
+     */
+    lock(pointer buffer,
+         uint64_t cpuUsage,
+         Rect accessRegion,
+         handle acquireFence)
+            generates (Error error,
+                       pointer data);
+
+    /**
+     * Unlocks a buffer to indicate all CPU accesses to the buffer have
+     * completed.
+     *
+     * @param buffer Buffer to unlock.
+     * @return error Error status of the call, which may be
+     *     - `NONE` upon success.
+     *     - `BAD_BUFFER` if the buffer is invalid or not locked.
+     * @return releaseFence Handle containing a file descriptor referring to a
+     *     sync fence object. The sync fence object will be signaled when the
+     *     mapper has completed any pending work. @p releaseFence may be an
+     *     empty fence.
+     */
+    unlock(pointer buffer) generates (Error error, handle releaseFence);
+
+    /**
+     * Flushes the contents of a locked buffer.
+     *
+     * This function flushes the CPUs caches for the range of all the buffer's
+     * planes and metadata. This should behave similarly to unlock() except the
+     * buffer should remain mapped to the CPU.
+     *
+     * The client is still responsible for calling unlock() when it is done
+     * with all CPU accesses to the buffer.
+     *
+     * If non-CPU blocks are simultaneously writing the buffer, the locked
+     * copy should still be flushed but what happens is undefined except that
+     * it should not cause any crashes.
+     *
+     * @param buffer Buffer to flush.
+     * @return error Error status of the call, which may be
+     *     - `NONE` upon success.
+     *     - `BAD_BUFFER` if the buffer is invalid or not locked.
+     * @return releaseFence Handle containing a file descriptor referring to a
+     *     sync fence object. The sync fence object will be signaled when the
+     *     mapper has completed any pending work. @p releaseFence may be an
+     *     empty fence.
+     */
+    flushLockedBuffer(pointer buffer) generates (Error error, handle releaseFence);
+
+    /**
+     * Rereads the contents of a locked buffer.
+     *
+     * This should fetch the most recent copy of the locked buffer.
+     *
+     * It may reread locked copies of the buffer in other processes.
+     *
+     * The client is still responsible for calling unlock() when it is done
+     * with all CPU accesses to the buffer.
+     *
+     * @param buffer Buffer to reread.
+     * @return error Error status of the call, which may be
+     *     - `NONE` upon success.
+     *     - `BAD_BUFFER` if the buffer is invalid or not locked.
+     *     - `NO_RESOURCES` if the buffer cannot be reread at this time. Note
+     *       that rereading may succeed at a later time.
+     */
+    rereadLockedBuffer(pointer buffer) generates(Error error);
+
+    /**
+     * Test whether the given BufferDescriptorInfo is allocatable.
+     *
+     * If this function returns true, it means that a buffer with the given
+     * description can be allocated on this implementation, unless resource
+     * exhaustion occurs. If this function returns false, it means that the
+     * allocation of the given description will never succeed.
+     *
+     * @param description the description of the buffer
+     * @return supported whether the description is supported
+     */
+    isSupported(BufferDescriptorInfo description)
+            generates (Error error,
+                       bool supported);
+
+
+    /**
+     * Description for get(...), set(...) and getFromBufferDescriptorInfo(...)
+     *
+     * ------------ Overview -----------------------------------
+     * Gralloc 4 adds support for getting and setting buffer metadata on a buffer.
+     *
+     * To get buffer metadata, the client passes in a buffer handle and a token that
+     * represents the type of buffer metadata they would like to get. IMapper returns
+     * a byte stream that contains the buffer metadata. To set the buffer metadata, the
+     * client passes in a buffer handle and a token that represents the type of buffer
+     * metadata they would like to set and a byte stream that contains the buffer metadata
+     * they are setting.
+     *
+     * Buffer metadata is global for a buffer. When the metadata is set on the buffer
+     * in a process, the updated metadata should be available to all other processes.
+     * Please see "Storing and Propagating Metadata" below for more details.
+     *
+     * The getter and setter functions have been optimized for easy vendor extension.
+     * They do not require a formal HIDL extension to add support for getting and setting
+     * vendor defined buffer metadata. In order to allow easy extension, the types used
+     * here are not typical HIDL types. See "Buffer Metadata Token" and
+     * "Buffer Metadata Stream" below for more details.
+     *
+     * ------------ Storing and Propagating Metadata -----------
+     * Buffer metadata must be global. Any changes to the metadata must be propagated
+     * to all other processes immediately. Vendors may chose how they would like support
+     * this functionality.
+     *
+     * We recommend supporting this functionality by allocating an extra page of shared
+     * memory and storing it in the buffer's native_handle_t. The buffer metadata can
+     * be stored in the extra page of shared memory. Set operations are automatically
+     * propagated to all other processes.
+     *
+     * ------------ Buffer Metadata Synchronization ------------
+     * There are no explicit buffer metadata synchronization primitives. Many devices
+     * before gralloc 4 already support getting and setting of global buffer metadata
+     * with no explicit synchronization primitives. Adding synchronization primitives
+     * would just add unnecessary complexity.
+     *
+     * The general rule is if a process has permission to write to a buffer, they
+     * have permission to write to the buffer's metadata. If a process has permission
+     * to read from a buffer, they have permission to read the buffer's metadata.
+     *
+     * There is one exception to this rule. Fences CANNOT be used to protect a buffer's
+     * metadata. A process should finish writing to a buffer's metadata before
+     * sending the buffer to another process that will read or write to the buffer.
+     * This exception is needed because sometimes userspace needs to read the
+     * buffer's metadata before the buffer's contents are ready.
+     *
+     * As a simple example: an app renders to a buffer and then displays the buffer.
+     * In this example when the app renders to the buffer, both the buffer and its
+     * metadata need to be updated. The app's process queues up its work on the GPU
+     * and gets back an acquire fence. The app's process must update the buffer's
+     * metadata before enqueuing the buffer to SurfaceFlinger. The app process CANNOT
+     * update the buffer's metadata after enqueuing the buffer. When HardwareComposer
+     * receives the buffer, it is immediately safe to read the buffer's metadata
+     * and use it to program the display driver. To read the buffer's contents,
+     * display driver must still wait on the acquire fence.
+     *
+     * ------------ Buffer Metadata Token ----------------------
+     * In order to allow arbitrary vendor defined metadata, we could not use a
+     * HIDL enum as the buffer metadata token. Extending a HIDL enum requires a full
+     * HIDL extension. We also could not use a simple non-HIDL enum because vendor
+     * defined enums from different vendors could collide. Instead we have defined
+     * a struct that has a string representing the enum type and an int that
+     * represents the enum value. The string protects different enum values from
+     * colliding.
+     *
+     * The token struct (MetadataType) is defined as a HIDL struct since it
+     * is passed into a HIDL function. The standard buffer metadata types are NOT
+     * defined as a HIDL enum because it would have required a new IMapper version
+     * just to add future standard buffer metadata types. By putting the enum in the
+     * stable AIDL (hardware/interfaces/graphics/common/aidl/android/hardware/
+     * graphics/common/StandardMetadataType.aidl), vendors will be able to optionally
+     * choose to support future standard buffer metadata types without upgrading
+     * HIDL versions. For more information see the description of "struct MetadataType".
+     *
+     * ------------ Buffer Metadata Stream ---------------------
+     * The buffer metadata is get and set as a byte stream (vec<uint8_t>). By getting
+     * and setting buffer metadata as a byte stream, vendors can use the standard
+     * getters and setter functions defined here. Vendors do NOT need to add their own
+     * getters and setter functions for each new type of buffer metadata.
+     *
+     * Converting buffer metadata into a byte stream can be non-trivial. For the standard
+     * buffer metadata types defined in StandardMetadataType.aidl, there are also
+     * support functions that will encode the buffer metadata into a byte stream
+     * and decode the buffer metadata from a byte stream. We STRONGLY recommend using
+     * these support functions. The framework will use them when getting and setting
+     * metadata. The support functions are defined in
+     * frameworks/native/libs/gralloc/types/include/gralloctypes/Gralloc4.h.
+     */
+
+    /**
+     * MetadataType represents the different types of buffer metadata that could be
+     * associated with a buffer. It is used by IMapper to help get and set buffer metadata
+     * on the buffer's native handle.
+     *
+     * Standard buffer metadata will have the name field set to
+     * "android.hardware.graphics.common.StandardMetadataType" and will contain values
+     * from StandardMetadataType.aidl.
+     *
+     * This struct should be "extended" by devices that use a proprietary or non-standard
+     * buffer metadata. To extend the struct, first create a custom @VendorStability vendor
+     * AIDL interface that defines the new type(s) you would like to support. Set the
+     * struct's name field to the custom aidl interface's name
+     * (eg. "vendor.mycompanyname.graphics.common.MetadataType"). Set the struct's value
+     * field to the custom @VendorStabilty vendor AIDL interface.
+     *
+     * Each company should create their own StandardMetadataType.aidl extension. The name
+     * field prevents values from different companies from colliding.
+     */
+    struct MetadataType {
+        string name;
+        int64_t value;
+    };
+
+    /**
+     * Gets the buffer metadata for a given MetadataType.
+     *
+     * Buffer metadata can be changed after allocation so clients should avoid "caching"
+     * the buffer metadata. For example, if the video resolution changes and the buffers
+     * are not reallocated, several buffer metadata values may change without warning.
+     * Clients should not expect the values to be constant. They should requery them every
+     * frame. The only exception is buffer metadata that is determined at allocation
+     * time. For StandardMetadataType values, only BUFFER_ID, NAME, WIDTH,
+     * HEIGHT, LAYER_COUNT, PIXEL_FORMAT_REQUESTED and USAGE are safe to cache because
+     * they are determined at allocation time.
+     *
+     * @param buffer Buffer containing desired metadata
+     * @param metadataType MetadataType for the metadata value being queried
+     * @return error Error status of the call, which may be
+     *     - `NONE` upon success.
+     *     - `BAD_BUFFER` if the raw handle is invalid.
+     *     - `NO_RESOURCES` if the get cannot be fullfilled due to unavailability of
+     *        resources.
+     *     - `UNSUPPORTED` when metadataType is unknown/unsupported.
+     *        IMapper must support getting all StandardMetadataType.aidl values defined
+     *        at the time the device first launches.
+     * @return metadata Vector of bytes representing the buffer metadata associated with
+     *  the MetadataType.
+     */
+    get(pointer buffer, MetadataType metadataType)
+            generates (Error error,
+                       vec<uint8_t> metadata);
+
+    /**
+     * Sets the global value for a given MetadataType.
+     *
+     * Metadata fields are not required to be settable. This function can
+     * return Error::UNSUPPORTED whenever it doesn't support setting a
+     * particular Metadata field.
+     *
+     * The framework may attempt to set the following StandardMetadataType
+     * values: DATASPACE, SMPTE2086, CTA861_3, SMPTE2094_40 and BLEND_MODE.
+     * We strongly encourage everyone to support setting as many of those fields as
+     * possible. If a device's Composer implementation supports a field, it should be
+     * supported here. Over time these metadata fields will be moved out of
+     * Composer/BufferQueue/etc. and into the buffer's Metadata fields.
+     * If a device's IMapper doesn't support setting those Metadata fields,
+     * eventually the device may not longer be able to support these fields.
+     *
+     * @param buffer Buffer receiving desired metadata
+     * @param metadataType MetadataType for the metadata value being set
+     * @param metadata Vector of bytes representing the value associated with
+     * @return error Error status of the call, which may be
+     *     - `NONE` upon success.
+     *     - `BAD_BUFFER` if the raw handle is invalid.
+     *     - `BAD_VALUE` when the field is constant and can never be set (such as
+     *       BUFFER_ID, NAME, WIDTH, HEIGHT, LAYER_COUNT, PIXEL_FORMAT_REQUESTED and
+     *       USAGE)
+     *     - `NO_RESOURCES` if the set cannot be fullfilled due to unavailability of
+     *        resources.
+     *     - `UNSUPPORTED` when metadataType is unknown/unsupported or setting
+     *       it is unsupported. Unsupported should also be returned if the metadata
+     *       is malformed.
+     */
+    set(pointer buffer, MetadataType metadataType, vec<uint8_t> metadata)
+            generates (Error error);
+
+    /**
+     * Given a BufferDescriptorInfo, gets the starting value of a given
+     * MetadataType. This can be used to query basic information about a buffer
+     * before the buffer is allocated.
+     *
+     * @param description Attributes of the descriptor.
+     * @param metadataType MetadataType for the metadata value being queried
+     * @return error Error status of the call, which may be
+     *     - `NONE` upon success.
+     *     - `BAD_VALUE` if any of the specified BufferDescriptorInfo attributes
+     *       are invalid.
+     *     - `NO_RESOURCES` if the get cannot be fullfilled due to unavailability of
+     *       resources.
+     *     - `UNSUPPORTED` when any of the description attributes are unsupported or
+     *       if the metadataType is unknown/unsupported. This should also be
+     *       returned if the requested metadata is not defined until a buffer has been
+     *       allocated.
+     * @return metadata Vector of bytes representing the value associated with
+     *  the MetadataType value.
+     */
+    getFromBufferDescriptorInfo(BufferDescriptorInfo description,
+                                MetadataType metadataType)
+            generates (Error error,
+                       vec<uint8_t> metadata);
+
+    struct MetadataTypeDescription {
+        MetadataType metadataType;
+        /**
+         * description should contain a string representation of the MetadataType.
+         *
+         * For example: "MyExampleMetadataType is a 64-bit timestamp in nanoseconds
+         * that indicates when a buffer is decoded. It is set by the media HAL after
+         * a buffer is decoded. It is used by the display HAL for hardware
+         * synchronization".
+         *
+         * This field is required for any non-StandardMetadataTypes.
+         */
+        string description;
+        /**
+         * isGettable represents if the MetadataType can be get.
+         */
+        bool isGettable;
+        /**
+         * isSettable represents if the MetadataType can be set.
+         */
+        bool isSettable;
+    };
+
+    /**
+     * Lists all the MetadataTypes supported by IMapper as well as a description
+     * of each supported MetadataType. For StandardMetadataTypes, the description
+     * string can be left empty.
+     *
+     * @return error Error status of the call, which may be
+     *     - `NONE` upon success.
+     *     - `NO_RESOURCES` if the get cannot be fullfilled due to unavailability of
+     *       resources.
+     * @return descriptions Vector of MetadataTypeDescriptions that represent the
+     *  MetadataTypes supported by the device.
+     */
+    listSupportedMetadataTypes()
+            generates (Error error, vec<MetadataTypeDescription> descriptions);
+
+    struct MetadataDump {
+        /**
+         * The type of metadata being dumped.
+         */
+        MetadataType metadataType;
+        /**
+         * The byte stream representation of the metadata. If the metadata is not
+         * gettable, the vector must be empty.
+         */
+        vec<uint8_t> metadata;
+    };
+
+    struct BufferDump {
+        /**
+         * A vector of all the metadata that is being dumped for a particular buffer.
+         */
+        vec<MetadataDump> metadataDump;
+    };
+
+    /**
+     * Dumps a buffer's metadata.
+     *
+     * @param buffer Buffer that is being dumped
+     * @return error Error status of the call, which may be
+     *     - `NONE` upon success.
+     *     - `BAD_BUFFER` if the raw handle is invalid.
+     *     - `NO_RESOURCES` if the get cannot be fullfilled due to unavailability of
+     *       resources.
+     * @return bufferDump Struct representing the metadata being dumped
+     */
+    dumpBuffer(pointer buffer)
+            generates (Error error, BufferDump bufferDump);
+
+    /**
+     * Dumps the metadata for all the buffers in the current process.
+     *
+     * @return error Error status of the call, which may be
+     *     - `NONE` upon success.
+     *     - `NO_RESOURCES` if the get cannot be fullfilled due to unavailability of
+     *       resources.
+     * @return bufferDumps Vector of structs representing the buffers being dumped
+     */
+    dumpBuffers()
+            generates (Error error, vec<BufferDump> bufferDumps);
+
+    /**
+     * Returns the region of shared memory associated with the buffer that is
+     * reserved for client use.
+     *
+     * The shared memory may be allocated from any shared memory allocator.
+     * The shared memory must be CPU-accessible and virtually contiguous. The
+     * starting address must be word-aligned.
+     *
+     * This function may only be called after importBuffer() has been called by the
+     * client. The reserved region must remain accessible until freeBuffer() has
+     * been called. After freeBuffer() has been called, the client must not access
+     * the reserved region.
+     *
+     * This reserved memory may be used in future versions of Android to
+     * help clients implement backwards compatible features without requiring
+     * IAllocator/IMapper updates.
+     *
+     * @param buffer Imported buffer handle.
+     * @return error Error status of the call, which may be
+     *     - `NONE` upon success.
+     *     - `BAD_BUFFER` if the buffer is invalid.
+     * @return reservedRegion CPU-accessible pointer to the reserved region
+     * @return reservedSize the size of the reservedRegion that was requested
+     *    in the BufferDescriptorInfo.
+     */
+    getReservedRegion(pointer buffer)
+            generates (Error error,
+                       pointer reservedRegion,
+                       uint64_t reservedSize);
+};
+
diff --git a/graphics/mapper/4.0/types.hal b/graphics/mapper/4.0/types.hal
new file mode 100644
index 0000000..00b6607
--- /dev/null
+++ b/graphics/mapper/4.0/types.hal
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.graphics.mapper@4.0;
+
+/**
+ * Error values that may be returned by a method of IAllocator or IMapper.
+ */
+enum Error : int32_t {
+    /**
+     * No error.
+     */
+    NONE            = 0,
+    /**
+     * Invalid BufferDescriptor.
+     */
+    BAD_DESCRIPTOR  = 1,
+    /**
+     * Invalid buffer handle.
+     */
+    BAD_BUFFER      = 2,
+    /**
+     * Invalid HardwareBufferDescription.
+     */
+    BAD_VALUE       = 3,
+    /**
+     * Resource unavailable.
+     */
+    NO_RESOURCES    = 5,
+    /**
+     * Permanent failure.
+     */
+    UNSUPPORTED     = 7,
+};
+
+/**
+ * A buffer descriptor is an implementation-defined opaque data returned by
+ * createDescriptor(). It describes the properties of a buffer and is consumed
+ * by the allocator.
+ */
+typedef vec<uint8_t> BufferDescriptor;
+
diff --git a/graphics/mapper/4.0/utils/OWNERS b/graphics/mapper/4.0/utils/OWNERS
new file mode 100644
index 0000000..96f6d51
--- /dev/null
+++ b/graphics/mapper/4.0/utils/OWNERS
@@ -0,0 +1,3 @@
+# Graphics team
+marissaw@google.com
+stoza@google.com
diff --git a/graphics/mapper/4.0/utils/vts/Android.bp b/graphics/mapper/4.0/utils/vts/Android.bp
new file mode 100644
index 0000000..56ff116
--- /dev/null
+++ b/graphics/mapper/4.0/utils/vts/Android.bp
@@ -0,0 +1,37 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_library_static {
+    name: "android.hardware.graphics.mapper@4.0-vts",
+    defaults: ["VtsHalTargetTestDefaults"],
+    srcs: ["MapperVts.cpp"],
+    cflags: [
+        "-O0",
+        "-g",
+    ],
+    static_libs: [
+        "android.hardware.graphics.allocator@4.0",
+        "android.hardware.graphics.mapper@4.0",
+    ],
+    shared_libs: [
+        "libgralloctypes",
+    ],
+    export_static_lib_headers: [
+        "android.hardware.graphics.allocator@4.0",
+        "android.hardware.graphics.mapper@4.0",
+    ],
+    export_include_dirs: ["include"],
+}
diff --git a/graphics/mapper/4.0/utils/vts/MapperVts.cpp b/graphics/mapper/4.0/utils/vts/MapperVts.cpp
new file mode 100644
index 0000000..cb90fa0
--- /dev/null
+++ b/graphics/mapper/4.0/utils/vts/MapperVts.cpp
@@ -0,0 +1,350 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gralloctypes/Gralloc4.h>
+#include <mapper-vts/4.0/MapperVts.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace mapper {
+namespace V4_0 {
+namespace vts {
+
+Gralloc::Gralloc(const std::string& allocatorServiceName, const std::string& mapperServiceName,
+                 bool errOnFailure) {
+    if (errOnFailure) {
+        init(allocatorServiceName, mapperServiceName);
+    } else {
+        initNoErr(allocatorServiceName, mapperServiceName);
+    }
+}
+
+void Gralloc::init(const std::string& allocatorServiceName, const std::string& mapperServiceName) {
+    mAllocator = IAllocator::getService(allocatorServiceName);
+    ASSERT_NE(nullptr, mAllocator.get()) << "failed to get allocator service";
+
+    mMapper = IMapper::getService(mapperServiceName);
+    ASSERT_NE(nullptr, mMapper.get()) << "failed to get mapper service";
+    ASSERT_FALSE(mMapper->isRemote()) << "mapper is not in passthrough mode";
+}
+
+void Gralloc::initNoErr(const std::string& allocatorServiceName,
+                        const std::string& mapperServiceName) {
+    mAllocator = IAllocator::getService(allocatorServiceName);
+
+    mMapper = IMapper::getService(mapperServiceName);
+    if (mMapper.get()) {
+        ASSERT_FALSE(mMapper->isRemote()) << "mapper is not in passthrough mode";
+    }
+}
+
+Gralloc::~Gralloc() {
+    for (auto bufferHandle : mClonedBuffers) {
+        auto buffer = const_cast<native_handle_t*>(bufferHandle);
+        native_handle_close(buffer);
+        native_handle_delete(buffer);
+    }
+    mClonedBuffers.clear();
+
+    for (auto bufferHandle : mImportedBuffers) {
+        auto buffer = const_cast<native_handle_t*>(bufferHandle);
+        EXPECT_EQ(Error::NONE, mMapper->freeBuffer(buffer)) << "failed to free buffer " << buffer;
+    }
+    mImportedBuffers.clear();
+}
+
+sp<IAllocator> Gralloc::getAllocator() const {
+    return mAllocator;
+}
+
+const native_handle_t* Gralloc::cloneBuffer(const hidl_handle& rawHandle) {
+    const native_handle_t* bufferHandle = native_handle_clone(rawHandle.getNativeHandle());
+    EXPECT_NE(nullptr, bufferHandle);
+
+    if (bufferHandle) {
+        mClonedBuffers.insert(bufferHandle);
+    }
+
+    return bufferHandle;
+}
+
+std::vector<const native_handle_t*> Gralloc::allocate(const BufferDescriptor& descriptor,
+                                                      uint32_t count, bool import,
+                                                      bool allowFailure, uint32_t* outStride) {
+    std::vector<const native_handle_t*> bufferHandles;
+    bufferHandles.reserve(count);
+    mAllocator->allocate(
+            descriptor, count,
+            [&](const auto& tmpError, const auto& tmpStride, const auto& tmpBuffers) {
+                ASSERT_EQ(Error::NONE, tmpError) << "failed to allocate buffers";
+                ASSERT_EQ(count, tmpBuffers.size()) << "invalid buffer array";
+
+                for (uint32_t i = 0; i < count; i++) {
+                    const native_handle_t* bufferHandle = nullptr;
+                    if (import) {
+                        if (allowFailure) {
+                            bufferHandle = importBuffer(tmpBuffers[i]);
+                        } else {
+                            ASSERT_NO_FATAL_FAILURE(bufferHandle = importBuffer(tmpBuffers[i]));
+                        }
+                    } else {
+                        if (allowFailure) {
+                            bufferHandle = cloneBuffer(tmpBuffers[i]);
+                        } else {
+                            ASSERT_NO_FATAL_FAILURE(bufferHandle = cloneBuffer(tmpBuffers[i]));
+                        }
+                    }
+                    if (bufferHandle) {
+                        bufferHandles.push_back(bufferHandle);
+                    }
+                }
+
+                if (outStride) {
+                    *outStride = tmpStride;
+                }
+            });
+
+    if (::testing::Test::HasFatalFailure()) {
+        bufferHandles.clear();
+    }
+
+    return bufferHandles;
+}
+
+const native_handle_t* Gralloc::allocate(const IMapper::BufferDescriptorInfo& descriptorInfo,
+                                         bool import, bool allowFailure, uint32_t* outStride) {
+    BufferDescriptor descriptor = createDescriptor(descriptorInfo);
+    if (::testing::Test::HasFatalFailure()) {
+        return nullptr;
+    }
+
+    auto buffers = allocate(descriptor, 1, import, allowFailure, outStride);
+    if (::testing::Test::HasFatalFailure()) {
+        return nullptr;
+    }
+
+    if (buffers.size() != 1) {
+        return nullptr;
+    }
+    return buffers[0];
+}
+
+sp<IMapper> Gralloc::getMapper() const {
+    return mMapper;
+}
+
+BufferDescriptor Gralloc::createDescriptor(const IMapper::BufferDescriptorInfo& descriptorInfo) {
+    BufferDescriptor descriptor;
+    mMapper->createDescriptor(descriptorInfo, [&](const auto& tmpError, const auto& tmpDescriptor) {
+        ASSERT_EQ(Error::NONE, tmpError) << "failed to create descriptor";
+        descriptor = tmpDescriptor;
+    });
+
+    return descriptor;
+}
+
+const native_handle_t* Gralloc::importBuffer(const hidl_handle& rawHandle) {
+    const native_handle_t* bufferHandle = nullptr;
+    mMapper->importBuffer(rawHandle, [&](const auto& tmpError, const auto& tmpBuffer) {
+        ASSERT_EQ(Error::NONE, tmpError)
+                << "failed to import buffer %p" << rawHandle.getNativeHandle();
+        bufferHandle = static_cast<const native_handle_t*>(tmpBuffer);
+    });
+
+    if (bufferHandle) {
+        mImportedBuffers.insert(bufferHandle);
+    }
+
+    return bufferHandle;
+}
+
+void Gralloc::freeBuffer(const native_handle_t* bufferHandle) {
+    if (bufferHandle == nullptr) {
+        return;
+    }
+
+    auto buffer = const_cast<native_handle_t*>(bufferHandle);
+
+    if (mImportedBuffers.erase(bufferHandle)) {
+        Error error = mMapper->freeBuffer(buffer);
+        ASSERT_EQ(Error::NONE, error) << "failed to free buffer " << buffer;
+    } else {
+        mClonedBuffers.erase(bufferHandle);
+        native_handle_close(buffer);
+        native_handle_delete(buffer);
+    }
+}
+
+void* Gralloc::lock(const native_handle_t* bufferHandle, uint64_t cpuUsage,
+                    const IMapper::Rect& accessRegion, int acquireFence) {
+    auto buffer = const_cast<native_handle_t*>(bufferHandle);
+
+    NATIVE_HANDLE_DECLARE_STORAGE(acquireFenceStorage, 1, 0);
+    hidl_handle acquireFenceHandle;
+    if (acquireFence >= 0) {
+        auto h = native_handle_init(acquireFenceStorage, 1, 0);
+        h->data[0] = acquireFence;
+        acquireFenceHandle = h;
+    }
+
+    void* data = nullptr;
+    mMapper->lock(buffer, cpuUsage, accessRegion, acquireFenceHandle,
+                  [&](const auto& tmpError, const auto& tmpData) {
+                      ASSERT_EQ(Error::NONE, tmpError) << "failed to lock buffer " << buffer;
+                      data = tmpData;
+                  });
+
+    if (acquireFence >= 0) {
+        close(acquireFence);
+    }
+
+    return data;
+}
+
+int Gralloc::unlock(const native_handle_t* bufferHandle) {
+    auto buffer = const_cast<native_handle_t*>(bufferHandle);
+
+    int releaseFence = -1;
+    mMapper->unlock(buffer, [&](const auto& tmpError, const auto& tmpReleaseFence) {
+        ASSERT_EQ(Error::NONE, tmpError) << "failed to unlock buffer " << buffer;
+
+        auto fenceHandle = tmpReleaseFence.getNativeHandle();
+        if (fenceHandle) {
+            ASSERT_EQ(0, fenceHandle->numInts) << "invalid fence handle " << fenceHandle;
+            if (fenceHandle->numFds == 1) {
+                releaseFence = dup(fenceHandle->data[0]);
+                ASSERT_LT(0, releaseFence) << "failed to dup fence fd";
+            } else {
+                ASSERT_EQ(0, fenceHandle->numFds) << " invalid fence handle " << fenceHandle;
+            }
+        }
+    });
+
+    return releaseFence;
+}
+
+int Gralloc::flushLockedBuffer(const native_handle_t* bufferHandle) {
+    auto buffer = const_cast<native_handle_t*>(bufferHandle);
+
+    int releaseFence = -1;
+    mMapper->flushLockedBuffer(buffer, [&](const auto& tmpError, const auto& tmpReleaseFence) {
+        ASSERT_EQ(Error::NONE, tmpError) << "failed to flush locked buffer " << buffer;
+
+        auto fenceHandle = tmpReleaseFence.getNativeHandle();
+        if (fenceHandle) {
+            ASSERT_EQ(0, fenceHandle->numInts) << "invalid fence handle " << fenceHandle;
+            if (fenceHandle->numFds == 1) {
+                releaseFence = dup(fenceHandle->data[0]);
+                ASSERT_LT(0, releaseFence) << "failed to dup fence fd";
+            } else {
+                ASSERT_EQ(0, fenceHandle->numFds) << " invalid fence handle " << fenceHandle;
+            }
+        }
+    });
+
+    return releaseFence;
+}
+
+void Gralloc::rereadLockedBuffer(const native_handle_t* bufferHandle) {
+    auto buffer = const_cast<native_handle_t*>(bufferHandle);
+
+    ASSERT_EQ(Error::NONE, mMapper->rereadLockedBuffer(buffer));
+}
+
+bool Gralloc::validateBufferSize(const native_handle_t* bufferHandle,
+                                 const IMapper::BufferDescriptorInfo& descriptorInfo,
+                                 uint32_t stride) {
+    auto buffer = const_cast<native_handle_t*>(bufferHandle);
+
+    Error error = mMapper->validateBufferSize(buffer, descriptorInfo, stride);
+    return error == Error::NONE;
+}
+
+void Gralloc::getTransportSize(const native_handle_t* bufferHandle, uint32_t* outNumFds,
+                               uint32_t* outNumInts) {
+    auto buffer = const_cast<native_handle_t*>(bufferHandle);
+
+    *outNumFds = 0;
+    *outNumInts = 0;
+    mMapper->getTransportSize(buffer, [&](const auto& tmpError, const auto& tmpNumFds,
+                                          const auto& tmpNumInts) {
+        ASSERT_EQ(Error::NONE, tmpError) << "failed to get transport size";
+        ASSERT_GE(bufferHandle->numFds, int(tmpNumFds)) << "invalid numFds " << tmpNumFds;
+        ASSERT_GE(bufferHandle->numInts, int(tmpNumInts)) << "invalid numInts " << tmpNumInts;
+
+        *outNumFds = tmpNumFds;
+        *outNumInts = tmpNumInts;
+    });
+}
+
+bool Gralloc::isSupported(const IMapper::BufferDescriptorInfo& descriptorInfo) {
+    bool supported = false;
+    mMapper->isSupported(descriptorInfo, [&](const auto& tmpError, const auto& tmpSupported) {
+        ASSERT_EQ(Error::NONE, tmpError) << "failed to check is supported";
+        supported = tmpSupported;
+    });
+    return supported;
+}
+
+Error Gralloc::get(const native_handle_t* bufferHandle, const IMapper::MetadataType& metadataType,
+                   hidl_vec<uint8_t>* outVec) {
+    Error err;
+    mMapper->get(const_cast<native_handle_t*>(bufferHandle), metadataType,
+                 [&](const auto& tmpError, const hidl_vec<uint8_t>& tmpVec) {
+                     err = tmpError;
+                     *outVec = tmpVec;
+                 });
+    return err;
+}
+
+Error Gralloc::set(const native_handle_t* bufferHandle, const IMapper::MetadataType& metadataType,
+                   const hidl_vec<uint8_t>& vec) {
+    return mMapper->set(const_cast<native_handle_t*>(bufferHandle), metadataType, vec);
+}
+
+Error Gralloc::getFromBufferDescriptorInfo(const IMapper::BufferDescriptorInfo& descriptorInfo,
+                                           const IMapper::MetadataType& metadataType,
+                                           hidl_vec<uint8_t>* outVec) {
+    Error err;
+    mMapper->getFromBufferDescriptorInfo(
+            descriptorInfo, metadataType,
+            [&](const auto& tmpError, const hidl_vec<uint8_t>& tmpVec) {
+                err = tmpError;
+                *outVec = tmpVec;
+            });
+    return err;
+}
+
+Error Gralloc::getReservedRegion(const native_handle_t* bufferHandle, void** outReservedRegion,
+                                 uint64_t* outReservedSize) {
+    Error err;
+    mMapper->getReservedRegion(
+            const_cast<native_handle_t*>(bufferHandle),
+            [&](const auto& tmpError, const auto& tmpReservedRegion, const auto& tmpReservedSize) {
+                err = tmpError;
+                *outReservedRegion = tmpReservedRegion;
+                *outReservedSize = tmpReservedSize;
+            });
+    return err;
+}
+
+}  // namespace vts
+}  // namespace V4_0
+}  // namespace mapper
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/mapper/4.0/utils/vts/include/mapper-vts/4.0/MapperVts.h b/graphics/mapper/4.0/utils/vts/include/mapper-vts/4.0/MapperVts.h
new file mode 100644
index 0000000..cd40aa4
--- /dev/null
+++ b/graphics/mapper/4.0/utils/vts/include/mapper-vts/4.0/MapperVts.h
@@ -0,0 +1,119 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <string>
+#include <unordered_set>
+#include <vector>
+
+#include <android/hardware/graphics/allocator/4.0/IAllocator.h>
+#include <android/hardware/graphics/mapper/4.0/IMapper.h>
+#include <gtest/gtest.h>
+#include <utils/StrongPointer.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace mapper {
+namespace V4_0 {
+namespace vts {
+
+using android::hardware::graphics::allocator::V4_0::IAllocator;
+
+// A wrapper to IAllocator and IMapper.
+class Gralloc {
+  public:
+    Gralloc(const std::string& allocatorServiceName = "default",
+            const std::string& mapperServiceName = "default", bool errOnFailure = true);
+    ~Gralloc();
+
+    // IAllocator methods
+
+    sp<IAllocator> getAllocator() const;
+
+    // When import is false, this simply calls IAllocator::allocate. When import
+    // is true, the returned buffers are also imported into the mapper.
+    //
+    // Either case, the returned buffers must be freed with freeBuffer.
+    std::vector<const native_handle_t*> allocate(const BufferDescriptor& descriptor, uint32_t count,
+                                                 bool import = true, bool allowFailure = false,
+                                                 uint32_t* outStride = nullptr);
+    const native_handle_t* allocate(const IMapper::BufferDescriptorInfo& descriptorInfo,
+                                    bool import = true, bool allowFailure = false,
+                                    uint32_t* outStride = nullptr);
+
+    // IMapper methods
+
+    sp<IMapper> getMapper() const;
+
+    BufferDescriptor createDescriptor(const IMapper::BufferDescriptorInfo& descriptorInfo);
+
+    const native_handle_t* importBuffer(const hidl_handle& rawHandle);
+    void freeBuffer(const native_handle_t* bufferHandle);
+
+    // We use fd instead of hidl_handle in these functions to pass fences
+    // in and out of the mapper.  The ownership of the fd is always transferred
+    // with each of these functions.
+    void* lock(const native_handle_t* bufferHandle, uint64_t cpuUsage,
+               const IMapper::Rect& accessRegion, int acquireFence);
+    int unlock(const native_handle_t* bufferHandle);
+
+    int flushLockedBuffer(const native_handle_t* bufferHandle);
+    void rereadLockedBuffer(const native_handle_t* bufferHandle);
+
+    bool validateBufferSize(const native_handle_t* bufferHandle,
+                            const IMapper::BufferDescriptorInfo& descriptorInfo, uint32_t stride);
+    void getTransportSize(const native_handle_t* bufferHandle, uint32_t* outNumFds,
+                          uint32_t* outNumInts);
+
+    bool isSupported(const IMapper::BufferDescriptorInfo& descriptorInfo);
+
+    Error get(const native_handle_t* bufferHandle, const IMapper::MetadataType& metadataType,
+              hidl_vec<uint8_t>* outVec);
+
+    Error set(const native_handle_t* bufferHandle, const IMapper::MetadataType& metadataType,
+              const hidl_vec<uint8_t>& vec);
+
+    Error getFromBufferDescriptorInfo(const IMapper::BufferDescriptorInfo& descriptorInfo,
+                                      const IMapper::MetadataType& metadataType,
+                                      hidl_vec<uint8_t>* outVec);
+
+    Error getReservedRegion(const native_handle_t* bufferHandle, void** outReservedRegion,
+                            uint64_t* outReservedSize);
+
+  private:
+    void init(const std::string& allocatorServiceName, const std::string& mapperServiceName);
+
+    // initialize without checking for failure to get service
+    void initNoErr(const std::string& allocatorServiceName, const std::string& mapperServiceName);
+    const native_handle_t* cloneBuffer(const hidl_handle& rawHandle);
+
+    sp<IAllocator> mAllocator;
+    sp<IMapper> mMapper;
+
+    // Keep track of all cloned and imported handles.  When a test fails with
+    // ASSERT_*, the destructor will free the handles for the test.
+    std::unordered_set<const native_handle_t*> mClonedBuffers;
+    std::unordered_set<const native_handle_t*> mImportedBuffers;
+};
+
+}  // namespace vts
+}  // namespace V4_0
+}  // namespace mapper
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/graphics/mapper/4.0/vts/OWNERS b/graphics/mapper/4.0/vts/OWNERS
new file mode 100644
index 0000000..96f6d51
--- /dev/null
+++ b/graphics/mapper/4.0/vts/OWNERS
@@ -0,0 +1,3 @@
+# Graphics team
+marissaw@google.com
+stoza@google.com
diff --git a/graphics/mapper/4.0/vts/functional/Android.bp b/graphics/mapper/4.0/vts/functional/Android.bp
new file mode 100644
index 0000000..3542a6e
--- /dev/null
+++ b/graphics/mapper/4.0/vts/functional/Android.bp
@@ -0,0 +1,41 @@
+//
+// Copyright 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_test {
+    name: "VtsHalGraphicsMapperV4_0TargetTest",
+    defaults: ["VtsHalTargetTestDefaults"],
+    srcs: ["VtsHalGraphicsMapperV4_0TargetTest.cpp"],
+    static_libs: [
+        "android.hardware.graphics.common-ndk_platform",
+        "android.hardware.graphics.mapper@4.0-vts",
+        "libgralloctypes",
+        "libsync",
+    ],
+    shared_libs: [
+        "android.hardware.graphics.allocator@4.0",
+        "android.hardware.graphics.common@1.0",
+        "android.hardware.graphics.common@1.1",
+        "android.hardware.graphics.common@1.2",
+        "android.hardware.graphics.mapper@4.0",
+    ],
+    header_libs: [
+        "libsystem_headers",
+    ],
+    test_suites: [
+        "general-tests",
+        "vts-core",
+    ],
+}
diff --git a/graphics/mapper/4.0/vts/functional/VtsHalGraphicsMapperV4_0TargetTest.cpp b/graphics/mapper/4.0/vts/functional/VtsHalGraphicsMapperV4_0TargetTest.cpp
new file mode 100644
index 0000000..2aad242
--- /dev/null
+++ b/graphics/mapper/4.0/vts/functional/VtsHalGraphicsMapperV4_0TargetTest.cpp
@@ -0,0 +1,2189 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "VtsHalGraphicsMapperV4_0TargetTest"
+
+#include <unistd.h>
+#include <chrono>
+#include <thread>
+#include <vector>
+
+#include <aidl/android/hardware/graphics/common/PlaneLayoutComponentType.h>
+
+#include <android-base/logging.h>
+#include <android/sync.h>
+#include <gralloctypes/Gralloc4.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
+#include <mapper-vts/4.0/MapperVts.h>
+#include <system/graphics.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace mapper {
+namespace V4_0 {
+namespace vts {
+namespace {
+
+using android::hardware::graphics::common::V1_2::BufferUsage;
+using android::hardware::graphics::common::V1_2::PixelFormat;
+using MetadataType = android::hardware::graphics::mapper::V4_0::IMapper::MetadataType;
+using aidl::android::hardware::graphics::common::BlendMode;
+using aidl::android::hardware::graphics::common::Cta861_3;
+using aidl::android::hardware::graphics::common::Dataspace;
+using aidl::android::hardware::graphics::common::ExtendableType;
+using aidl::android::hardware::graphics::common::PlaneLayout;
+using aidl::android::hardware::graphics::common::PlaneLayoutComponent;
+using aidl::android::hardware::graphics::common::PlaneLayoutComponentType;
+using aidl::android::hardware::graphics::common::Smpte2086;
+using aidl::android::hardware::graphics::common::StandardMetadataType;
+
+using DecodeFunction = std::function<void(const IMapper::BufferDescriptorInfo& descriptorInfo,
+                                          const hidl_vec<uint8_t>& vec)>;
+
+class GraphicsMapperHidlTest
+    : public ::testing::TestWithParam<std::tuple<std::string, std::string>> {
+  protected:
+    void SetUp() override {
+        ASSERT_NO_FATAL_FAILURE(mGralloc = std::make_unique<Gralloc>(std::get<0>(GetParam()),
+                                                                     std::get<1>(GetParam())));
+        ASSERT_NE(nullptr, mGralloc->getAllocator().get());
+        ASSERT_NE(nullptr, mGralloc->getMapper().get());
+
+        mDummyDescriptorInfo.name = "dummy";
+        mDummyDescriptorInfo.width = 64;
+        mDummyDescriptorInfo.height = 64;
+        mDummyDescriptorInfo.layerCount = 1;
+        mDummyDescriptorInfo.format = PixelFormat::RGBA_8888;
+        mDummyDescriptorInfo.usage =
+                static_cast<uint64_t>(BufferUsage::CPU_WRITE_OFTEN | BufferUsage::CPU_READ_OFTEN);
+        mDummyDescriptorInfo.reservedSize = 0;
+    }
+
+    void TearDown() override {}
+
+    void testGet(const IMapper::BufferDescriptorInfo& descriptorInfo,
+                 const MetadataType& metadataType, DecodeFunction decode) {
+        const native_handle_t* bufferHandle = nullptr;
+        ASSERT_NO_FATAL_FAILURE(bufferHandle = mGralloc->allocate(descriptorInfo, true));
+
+        hidl_vec<uint8_t> vec;
+        ASSERT_EQ(Error::NONE, mGralloc->get(bufferHandle, metadataType, &vec));
+
+        ASSERT_NO_FATAL_FAILURE(decode(descriptorInfo, vec));
+    }
+
+    void testSet(const IMapper::BufferDescriptorInfo& descriptorInfo,
+                 const MetadataType& metadataType, const hidl_vec<uint8_t>& metadata,
+                 DecodeFunction decode) {
+        const native_handle_t* bufferHandle = nullptr;
+        ASSERT_NO_FATAL_FAILURE(bufferHandle = mGralloc->allocate(descriptorInfo, true));
+
+        Error err = mGralloc->set(bufferHandle, metadataType, metadata);
+        if (err == Error::UNSUPPORTED) {
+            GTEST_SUCCEED() << "setting this metadata is unsupported";
+        }
+        ASSERT_EQ(err, Error::NONE);
+
+        hidl_vec<uint8_t> vec;
+        ASSERT_EQ(Error::NONE, mGralloc->get(bufferHandle, metadataType, &vec));
+
+        ASSERT_NO_FATAL_FAILURE(decode(descriptorInfo, vec));
+    }
+
+    void verifyDummyDescriptorInfoPlaneLayouts(const std::vector<PlaneLayout>& planeLayouts) {
+        ASSERT_EQ(1, planeLayouts.size());
+
+        const auto& planeLayout = planeLayouts.front();
+
+        ASSERT_EQ(4, planeLayout.components.size());
+
+        int64_t offsetInBitsR = -1;
+        int64_t offsetInBitsG = -1;
+        int64_t offsetInBitsB = -1;
+        int64_t offsetInBitsA = -1;
+
+        for (const auto& component : planeLayout.components) {
+            if (!gralloc4::isStandardPlaneLayoutComponentType(component.type)) {
+                continue;
+            }
+            EXPECT_EQ(8, component.sizeInBits);
+            if (component.type.value == gralloc4::PlaneLayoutComponentType_R.value) {
+                offsetInBitsR = component.offsetInBits;
+            }
+            if (component.type.value == gralloc4::PlaneLayoutComponentType_G.value) {
+                offsetInBitsG = component.offsetInBits;
+            }
+            if (component.type.value == gralloc4::PlaneLayoutComponentType_B.value) {
+                offsetInBitsB = component.offsetInBits;
+            }
+            if (component.type.value == gralloc4::PlaneLayoutComponentType_A.value) {
+                offsetInBitsA = component.offsetInBits;
+            }
+        }
+
+        EXPECT_EQ(0, offsetInBitsR);
+        EXPECT_EQ(8, offsetInBitsG);
+        EXPECT_EQ(16, offsetInBitsB);
+        EXPECT_EQ(24, offsetInBitsA);
+
+        EXPECT_EQ(0, planeLayout.offsetInBytes);
+        EXPECT_EQ(8, planeLayout.sampleIncrementInBits);
+        // Skip testing stride because any stride is valid
+        EXPECT_EQ(mDummyDescriptorInfo.width, planeLayout.widthInSamples);
+        EXPECT_EQ(mDummyDescriptorInfo.height, planeLayout.heightInSamples);
+        EXPECT_LE(planeLayout.widthInSamples * planeLayout.heightInSamples * 4,
+                  planeLayout.totalSizeInBytes);
+        EXPECT_EQ(1, planeLayout.horizontalSubsampling);
+        EXPECT_EQ(1, planeLayout.verticalSubsampling);
+
+        EXPECT_EQ(0, planeLayout.crop.left);
+        EXPECT_EQ(0, planeLayout.crop.top);
+        EXPECT_EQ(planeLayout.widthInSamples, planeLayout.crop.right);
+        EXPECT_EQ(planeLayout.heightInSamples, planeLayout.crop.bottom);
+    }
+
+    void verifyBufferDump(const IMapper::BufferDump& bufferDump,
+                          const native_handle_t* bufferHandle = nullptr) {
+        std::set<StandardMetadataType> foundMetadataTypes;
+
+        const std::vector<IMapper::MetadataDump> metadataDump = bufferDump.metadataDump;
+
+        for (const auto& dump : metadataDump) {
+            const auto& metadataType = dump.metadataType;
+            const auto& metadata = dump.metadata;
+
+            if (!gralloc4::isStandardMetadataType(metadataType)) {
+                continue;
+            }
+
+            StandardMetadataType type = gralloc4::getStandardMetadataTypeValue(metadataType);
+
+            if (sRequiredMetadataTypes.find(type) == sRequiredMetadataTypes.end()) {
+                continue;
+            }
+
+            ASSERT_EQ(foundMetadataTypes.find(type), foundMetadataTypes.end());
+            foundMetadataTypes.insert(type);
+
+            if (!bufferHandle) {
+                continue;
+            }
+
+            hidl_vec<uint8_t> metadataFromGet;
+            ASSERT_EQ(Error::NONE, mGralloc->get(bufferHandle, metadataType, &metadataFromGet));
+
+            ASSERT_EQ(metadataFromGet, metadata);
+        }
+
+        EXPECT_EQ(sRequiredMetadataTypes, foundMetadataTypes);
+    }
+
+    void getAndroidYCbCr(const native_handle_t* bufferHandle, uint8_t* data,
+                         android_ycbcr* outYCbCr) {
+        hidl_vec<uint8_t> vec;
+        ASSERT_EQ(Error::NONE,
+                  mGralloc->get(bufferHandle, gralloc4::MetadataType_PlaneLayouts, &vec));
+        std::vector<PlaneLayout> planeLayouts;
+        ASSERT_EQ(NO_ERROR, gralloc4::decodePlaneLayouts(vec, &planeLayouts));
+
+        outYCbCr->y = nullptr;
+        outYCbCr->cb = nullptr;
+        outYCbCr->cr = nullptr;
+        outYCbCr->ystride = 0;
+        outYCbCr->cstride = 0;
+        outYCbCr->chroma_step = 0;
+
+        for (const auto& planeLayout : planeLayouts) {
+            for (const auto& planeLayoutComponent : planeLayout.components) {
+                if (!gralloc4::isStandardPlaneLayoutComponentType(planeLayoutComponent.type)) {
+                    continue;
+                }
+                ASSERT_EQ(0, planeLayoutComponent.offsetInBits % 8);
+
+                uint8_t* tmpData =
+                        data + planeLayout.offsetInBytes + (planeLayoutComponent.offsetInBits / 8);
+                uint64_t sampleIncrementInBytes;
+
+                auto type = static_cast<PlaneLayoutComponentType>(planeLayoutComponent.type.value);
+                switch (type) {
+                    case PlaneLayoutComponentType::Y:
+                        ASSERT_EQ(nullptr, outYCbCr->y);
+                        ASSERT_EQ(8, planeLayoutComponent.sizeInBits);
+                        ASSERT_EQ(8, planeLayout.sampleIncrementInBits);
+                        outYCbCr->y = tmpData;
+                        outYCbCr->ystride = planeLayout.strideInBytes;
+                        break;
+
+                    case PlaneLayoutComponentType::CB:
+                    case PlaneLayoutComponentType::CR:
+                        ASSERT_EQ(0, planeLayout.sampleIncrementInBits % 8);
+
+                        sampleIncrementInBytes = planeLayout.sampleIncrementInBits / 8;
+                        ASSERT_TRUE(sampleIncrementInBytes == 1 || sampleIncrementInBytes == 2);
+
+                        if (outYCbCr->cstride == 0 && outYCbCr->chroma_step == 0) {
+                            outYCbCr->cstride = planeLayout.strideInBytes;
+                            outYCbCr->chroma_step = sampleIncrementInBytes;
+                        } else {
+                            ASSERT_EQ(outYCbCr->cstride, planeLayout.strideInBytes);
+                            ASSERT_EQ(outYCbCr->chroma_step, sampleIncrementInBytes);
+                        }
+
+                        if (type == PlaneLayoutComponentType::CB) {
+                            ASSERT_EQ(nullptr, outYCbCr->cb);
+                            outYCbCr->cb = tmpData;
+                        } else {
+                            ASSERT_EQ(nullptr, outYCbCr->cr);
+                            outYCbCr->cr = tmpData;
+                        }
+                        break;
+                    default:
+                        break;
+                };
+            }
+        }
+
+        ASSERT_NE(nullptr, outYCbCr->y);
+        ASSERT_NE(nullptr, outYCbCr->cb);
+        ASSERT_NE(nullptr, outYCbCr->cr);
+    }
+
+    void fillRGBA8888(uint8_t* data, uint32_t height, size_t strideInBytes, size_t widthInBytes,
+                      uint32_t seed = 0) {
+        for (uint32_t y = 0; y < height; y++) {
+            memset(data, y + seed, widthInBytes);
+            data += strideInBytes;
+        }
+    }
+
+    void verifyRGBA8888(uint8_t* data, uint32_t height, size_t strideInBytes, size_t widthInBytes,
+                        uint32_t seed = 0) {
+        for (uint32_t y = 0; y < height; y++) {
+            for (size_t i = 0; i < widthInBytes; i++) {
+                EXPECT_EQ(static_cast<uint8_t>(y + seed), data[i]);
+            }
+            data += strideInBytes;
+        }
+    }
+
+    std::unique_ptr<Gralloc> mGralloc;
+    IMapper::BufferDescriptorInfo mDummyDescriptorInfo{};
+    static const std::set<StandardMetadataType> sRequiredMetadataTypes;
+};
+
+const std::set<StandardMetadataType> GraphicsMapperHidlTest::sRequiredMetadataTypes{
+        StandardMetadataType::BUFFER_ID,
+        StandardMetadataType::NAME,
+        StandardMetadataType::WIDTH,
+        StandardMetadataType::HEIGHT,
+        StandardMetadataType::LAYER_COUNT,
+        StandardMetadataType::PIXEL_FORMAT_REQUESTED,
+        StandardMetadataType::PIXEL_FORMAT_FOURCC,
+        StandardMetadataType::PIXEL_FORMAT_MODIFIER,
+        StandardMetadataType::USAGE,
+        StandardMetadataType::ALLOCATION_SIZE,
+        StandardMetadataType::PROTECTED_CONTENT,
+        StandardMetadataType::COMPRESSION,
+        StandardMetadataType::INTERLACED,
+        StandardMetadataType::CHROMA_SITING,
+        StandardMetadataType::PLANE_LAYOUTS,
+        StandardMetadataType::DATASPACE,
+        StandardMetadataType::BLEND_MODE,
+};
+
+/**
+ * Test IAllocator::allocate with valid buffer descriptors.
+ */
+TEST_P(GraphicsMapperHidlTest, AllocatorAllocate) {
+    BufferDescriptor descriptor;
+    ASSERT_NO_FATAL_FAILURE(descriptor = mGralloc->createDescriptor(mDummyDescriptorInfo));
+
+    for (uint32_t count = 0; count < 5; count++) {
+        std::vector<const native_handle_t*> bufferHandles;
+        uint32_t stride;
+        ASSERT_NO_FATAL_FAILURE(
+                bufferHandles = mGralloc->allocate(descriptor, count, false, false, &stride));
+
+        if (count >= 1) {
+            EXPECT_LE(mDummyDescriptorInfo.width, stride) << "invalid buffer stride";
+        }
+
+        for (auto bufferHandle : bufferHandles) {
+            mGralloc->freeBuffer(bufferHandle);
+        }
+    }
+}
+
+/**
+ * Test IAllocator::allocate with invalid buffer descriptors.
+ */
+TEST_P(GraphicsMapperHidlTest, AllocatorAllocateNegative) {
+    // this assumes any valid descriptor is non-empty
+    BufferDescriptor descriptor;
+    mGralloc->getAllocator()->allocate(descriptor, 1,
+                                       [&](const auto& tmpError, const auto&, const auto&) {
+                                           EXPECT_EQ(Error::BAD_DESCRIPTOR, tmpError);
+                                       });
+}
+
+/**
+ * Test IAllocator::allocate does not leak.
+ */
+TEST_P(GraphicsMapperHidlTest, AllocatorAllocateNoLeak) {
+    auto info = mDummyDescriptorInfo;
+    info.width = 1024;
+    info.height = 1024;
+
+    for (int i = 0; i < 2048; i++) {
+        auto bufferHandle = mGralloc->allocate(info, false);
+        mGralloc->freeBuffer(bufferHandle);
+    }
+}
+
+/**
+ * Test that IAllocator::allocate is thread-safe.
+ */
+TEST_P(GraphicsMapperHidlTest, AllocatorAllocateThreaded) {
+    BufferDescriptor descriptor;
+    ASSERT_NO_FATAL_FAILURE(descriptor = mGralloc->createDescriptor(mDummyDescriptorInfo));
+
+    std::atomic<bool> timeUp(false);
+    std::atomic<uint64_t> allocationCount(0);
+    auto threadLoop = [&]() {
+        while (!timeUp) {
+            mGralloc->getAllocator()->allocate(
+                    descriptor, 1,
+                    [&](const auto&, const auto&, const auto&) { allocationCount++; });
+        }
+    };
+
+    std::vector<std::thread> threads;
+    for (int i = 0; i < 8; i++) {
+        threads.push_back(std::thread(threadLoop));
+    }
+
+    std::this_thread::sleep_for(std::chrono::seconds(3));
+    timeUp = true;
+    LOG(VERBOSE) << "Made " << allocationCount << " threaded allocations";
+
+    for (auto& thread : threads) {
+        thread.join();
+    }
+}
+
+/**
+ * Test IMapper::createDescriptor with valid descriptor info.
+ */
+TEST_P(GraphicsMapperHidlTest, CreateDescriptorBasic) {
+    ASSERT_NO_FATAL_FAILURE(mGralloc->createDescriptor(mDummyDescriptorInfo));
+}
+
+/**
+ * Test IMapper::createDescriptor with invalid descriptor info.
+ */
+TEST_P(GraphicsMapperHidlTest, CreateDescriptorNegative) {
+    auto info = mDummyDescriptorInfo;
+    info.width = 0;
+    mGralloc->getMapper()->createDescriptor(info, [&](const auto& tmpError, const auto&) {
+        EXPECT_EQ(Error::BAD_VALUE, tmpError) << "createDescriptor did not fail with BAD_VALUE";
+    });
+}
+
+/**
+ * Test IMapper::importBuffer and IMapper::freeBuffer with allocated buffers.
+ */
+TEST_P(GraphicsMapperHidlTest, ImportFreeBufferBasic) {
+    const native_handle_t* bufferHandle;
+    ASSERT_NO_FATAL_FAILURE(bufferHandle = mGralloc->allocate(mDummyDescriptorInfo, true));
+    ASSERT_NO_FATAL_FAILURE(mGralloc->freeBuffer(bufferHandle));
+}
+
+/**
+ * Test IMapper::importBuffer and IMapper::freeBuffer with cloned buffers.
+ */
+TEST_P(GraphicsMapperHidlTest, ImportFreeBufferClone) {
+    const native_handle_t* clonedBufferHandle;
+    ASSERT_NO_FATAL_FAILURE(clonedBufferHandle = mGralloc->allocate(mDummyDescriptorInfo, false));
+
+    // A cloned handle is a raw handle. Check that we can import it multiple
+    // times.
+    const native_handle_t* importedBufferHandles[2];
+    ASSERT_NO_FATAL_FAILURE(importedBufferHandles[0] = mGralloc->importBuffer(clonedBufferHandle));
+    ASSERT_NO_FATAL_FAILURE(importedBufferHandles[1] = mGralloc->importBuffer(clonedBufferHandle));
+    ASSERT_NO_FATAL_FAILURE(mGralloc->freeBuffer(importedBufferHandles[0]));
+    ASSERT_NO_FATAL_FAILURE(mGralloc->freeBuffer(importedBufferHandles[1]));
+
+    ASSERT_NO_FATAL_FAILURE(mGralloc->freeBuffer(clonedBufferHandle));
+}
+
+/**
+ * Test IMapper::importBuffer and IMapper::freeBuffer cross mapper instances.
+ */
+TEST_P(GraphicsMapperHidlTest, ImportFreeBufferSingleton) {
+    const native_handle_t* rawHandle;
+    ASSERT_NO_FATAL_FAILURE(rawHandle = mGralloc->allocate(mDummyDescriptorInfo, false));
+
+    native_handle_t* importedHandle = nullptr;
+    mGralloc->getMapper()->importBuffer(rawHandle, [&](const auto& tmpError, const auto& buffer) {
+        ASSERT_EQ(Error::NONE, tmpError);
+        importedHandle = static_cast<native_handle_t*>(buffer);
+    });
+
+    // free the imported handle with another mapper
+    std::unique_ptr<Gralloc> anotherGralloc;
+    ASSERT_NO_FATAL_FAILURE(anotherGralloc = std::make_unique<Gralloc>(std::get<0>(GetParam()),
+                                                                       std::get<1>(GetParam())));
+    Error error = mGralloc->getMapper()->freeBuffer(importedHandle);
+    ASSERT_EQ(Error::NONE, error);
+
+    ASSERT_NO_FATAL_FAILURE(mGralloc->freeBuffer(rawHandle));
+}
+
+/**
+ * Test IMapper::importBuffer and IMapper::freeBuffer do not leak.
+ */
+TEST_P(GraphicsMapperHidlTest, ImportFreeBufferNoLeak) {
+    auto info = mDummyDescriptorInfo;
+    info.width = 1024;
+    info.height = 1024;
+
+    for (int i = 0; i < 2048; i++) {
+        auto bufferHandle = mGralloc->allocate(info, true);
+        mGralloc->freeBuffer(bufferHandle);
+    }
+}
+
+/**
+ * Test IMapper::importBuffer with invalid buffers.
+ */
+TEST_P(GraphicsMapperHidlTest, ImportBufferNegative) {
+    native_handle_t* invalidHandle = nullptr;
+    mGralloc->getMapper()->importBuffer(invalidHandle, [&](const auto& tmpError, const auto&) {
+        EXPECT_EQ(Error::BAD_BUFFER, tmpError)
+                << "importBuffer with nullptr did not fail with BAD_BUFFER";
+    });
+
+    invalidHandle = native_handle_create(0, 0);
+    mGralloc->getMapper()->importBuffer(invalidHandle, [&](const auto& tmpError, const auto&) {
+        EXPECT_EQ(Error::BAD_BUFFER, tmpError)
+                << "importBuffer with invalid handle did not fail with BAD_BUFFER";
+    });
+    native_handle_delete(invalidHandle);
+}
+
+/**
+ * Test IMapper::freeBuffer with invalid buffers.
+ */
+TEST_P(GraphicsMapperHidlTest, FreeBufferNegative) {
+    native_handle_t* invalidHandle = nullptr;
+    Error error = mGralloc->getMapper()->freeBuffer(invalidHandle);
+    EXPECT_EQ(Error::BAD_BUFFER, error) << "freeBuffer with nullptr did not fail with BAD_BUFFER";
+
+    invalidHandle = native_handle_create(0, 0);
+    error = mGralloc->getMapper()->freeBuffer(invalidHandle);
+    EXPECT_EQ(Error::BAD_BUFFER, error)
+            << "freeBuffer with invalid handle did not fail with BAD_BUFFER";
+    native_handle_delete(invalidHandle);
+
+    const native_handle_t* clonedBufferHandle;
+    ASSERT_NO_FATAL_FAILURE(clonedBufferHandle = mGralloc->allocate(mDummyDescriptorInfo, false));
+    error = mGralloc->getMapper()->freeBuffer(invalidHandle);
+    EXPECT_EQ(Error::BAD_BUFFER, error)
+            << "freeBuffer with un-imported handle did not fail with BAD_BUFFER";
+
+    mGralloc->freeBuffer(clonedBufferHandle);
+}
+
+/**
+ * Test IMapper::lock and IMapper::unlock.
+ */
+TEST_P(GraphicsMapperHidlTest, LockUnlockBasic) {
+    const auto& info = mDummyDescriptorInfo;
+
+    const native_handle_t* bufferHandle;
+    uint32_t stride;
+    ASSERT_NO_FATAL_FAILURE(bufferHandle = mGralloc->allocate(info, true, false, &stride));
+
+    // lock buffer for writing
+    const IMapper::Rect region{0, 0, static_cast<int32_t>(info.width),
+                               static_cast<int32_t>(info.height)};
+    int fence = -1;
+    uint8_t* data;
+    ASSERT_NO_FATAL_FAILURE(
+            data = static_cast<uint8_t*>(mGralloc->lock(bufferHandle, info.usage, region, fence)));
+
+    // RGBA_8888
+    fillRGBA8888(data, info.height, stride * 4, info.width * 4);
+
+    ASSERT_NO_FATAL_FAILURE(fence = mGralloc->unlock(bufferHandle));
+
+    // lock again for reading
+    ASSERT_NO_FATAL_FAILURE(
+            data = static_cast<uint8_t*>(mGralloc->lock(bufferHandle, info.usage, region, fence)));
+    ASSERT_NO_FATAL_FAILURE(verifyRGBA8888(data, info.height, stride * 4, info.width * 4));
+
+    ASSERT_NO_FATAL_FAILURE(fence = mGralloc->unlock(bufferHandle));
+    if (fence >= 0) {
+        close(fence);
+    }
+}
+
+TEST_P(GraphicsMapperHidlTest, Lock_YCBCR_420_888) {
+    auto info = mDummyDescriptorInfo;
+    info.format = PixelFormat::YCBCR_420_888;
+
+    const native_handle_t* bufferHandle;
+    uint32_t stride;
+    ASSERT_NO_FATAL_FAILURE(bufferHandle = mGralloc->allocate(info, true, false, &stride));
+
+    // lock buffer for writing
+    const IMapper::Rect region{0, 0, static_cast<int32_t>(info.width),
+                               static_cast<int32_t>(info.height)};
+    int fence = -1;
+    uint8_t* data;
+
+    ASSERT_NO_FATAL_FAILURE(
+            data = static_cast<uint8_t*>(mGralloc->lock(bufferHandle, info.usage, region, fence)));
+
+    android_ycbcr yCbCr;
+    ASSERT_NO_FATAL_FAILURE(getAndroidYCbCr(bufferHandle, data, &yCbCr));
+
+    auto yData = static_cast<uint8_t*>(yCbCr.y);
+    auto cbData = static_cast<uint8_t*>(yCbCr.cb);
+    auto crData = static_cast<uint8_t*>(yCbCr.cr);
+    auto yStride = yCbCr.ystride;
+    auto cStride = yCbCr.cstride;
+    auto chromaStep = yCbCr.chroma_step;
+
+    for (uint32_t y = 0; y < info.height; y++) {
+        for (uint32_t x = 0; x < info.width; x++) {
+            auto val = static_cast<uint8_t>(info.height * y + x);
+
+            yData[yStride * y + x] = val;
+
+            if (y % chromaStep && x % chromaStep == 0) {
+                cbData[cStride * y / chromaStep + x / chromaStep] = val;
+                crData[cStride * y / chromaStep + x / chromaStep] = val;
+            }
+        }
+    }
+
+    ASSERT_NO_FATAL_FAILURE(fence = mGralloc->unlock(bufferHandle));
+
+    // lock again for reading
+    ASSERT_NO_FATAL_FAILURE(
+            data = static_cast<uint8_t*>(mGralloc->lock(bufferHandle, info.usage, region, fence)));
+
+    ASSERT_NO_FATAL_FAILURE(getAndroidYCbCr(bufferHandle, data, &yCbCr));
+
+    yData = static_cast<uint8_t*>(yCbCr.y);
+    cbData = static_cast<uint8_t*>(yCbCr.cb);
+    crData = static_cast<uint8_t*>(yCbCr.cr);
+    for (uint32_t y = 0; y < info.height; y++) {
+        for (uint32_t x = 0; x < info.width; x++) {
+            auto val = static_cast<uint8_t>(info.height * y + x);
+
+            EXPECT_EQ(val, yData[yStride * y + x]);
+
+            if (y % chromaStep == 0 && x % chromaStep == 0) {
+                EXPECT_EQ(val, cbData[cStride * y / chromaStep + x / chromaStep]);
+                EXPECT_EQ(val, crData[cStride * y / chromaStep + x / chromaStep]);
+            }
+        }
+    }
+
+    ASSERT_NO_FATAL_FAILURE(fence = mGralloc->unlock(bufferHandle));
+    if (fence >= 0) {
+        close(fence);
+    }
+}
+
+/**
+ * Test IMapper::unlock with bad access region
+ */
+TEST_P(GraphicsMapperHidlTest, LockBadAccessRegion) {
+    const auto& info = mDummyDescriptorInfo;
+
+    const native_handle_t* bufferHandle;
+    ASSERT_NO_FATAL_FAILURE(bufferHandle = mGralloc->allocate(info, true));
+
+    const IMapper::Rect accessRegion{0, 0, static_cast<int32_t>(info.width * 2),
+                                     static_cast<int32_t>(info.height * 2)};
+    int acquireFence = -1;
+
+    NATIVE_HANDLE_DECLARE_STORAGE(acquireFenceStorage, 1, 0);
+    hidl_handle acquireFenceHandle;
+    if (acquireFence >= 0) {
+        auto h = native_handle_init(acquireFenceStorage, 1, 0);
+        h->data[0] = acquireFence;
+        acquireFenceHandle = h;
+    }
+
+    auto buffer = const_cast<native_handle_t*>(bufferHandle);
+    mGralloc->getMapper()->lock(buffer, info.usage, accessRegion, acquireFenceHandle,
+                                [&](const auto& tmpError, const auto& /*tmpData*/) {
+                                    EXPECT_EQ(Error::BAD_VALUE, tmpError)
+                                            << "locking with a bad access region should fail";
+                                });
+
+    if (::testing::Test::HasFailure()) {
+        if (acquireFence >= 0) {
+            close(acquireFence);
+        }
+
+        int releaseFence = -1;
+        ASSERT_NO_FATAL_FAILURE(releaseFence = mGralloc->unlock(bufferHandle));
+
+        if (releaseFence >= 0) {
+            close(releaseFence);
+        }
+    }
+}
+
+/**
+ * Test IMapper::unlock with invalid buffers.
+ */
+TEST_P(GraphicsMapperHidlTest, UnlockNegative) {
+    native_handle_t* invalidHandle = nullptr;
+    mGralloc->getMapper()->unlock(invalidHandle, [&](const auto& tmpError, const auto&) {
+        EXPECT_EQ(Error::BAD_BUFFER, tmpError)
+                << "unlock with nullptr did not fail with BAD_BUFFER";
+    });
+
+    invalidHandle = native_handle_create(0, 0);
+    mGralloc->getMapper()->unlock(invalidHandle, [&](const auto& tmpError, const auto&) {
+        EXPECT_EQ(Error::BAD_BUFFER, tmpError)
+                << "unlock with invalid handle did not fail with BAD_BUFFER";
+    });
+    native_handle_delete(invalidHandle);
+
+    ASSERT_NO_FATAL_FAILURE(invalidHandle = const_cast<native_handle_t*>(
+                                    mGralloc->allocate(mDummyDescriptorInfo, false)));
+    mGralloc->getMapper()->unlock(invalidHandle, [&](const auto& tmpError, const auto&) {
+        EXPECT_EQ(Error::BAD_BUFFER, tmpError)
+                << "unlock with un-imported handle did not fail with BAD_BUFFER";
+    });
+    mGralloc->freeBuffer(invalidHandle);
+
+// disabled as it fails on many existing drivers
+#if 0
+  ASSERT_NO_FATAL_FAILURE(invalidHandle = const_cast<native_handle_t*>(
+                              mGralloc->allocate(mDummyDescriptorInfo, true)));
+  mGralloc->getMapper()->unlock(
+      invalidHandle, [&](const auto& tmpError, const auto&) {
+        EXPECT_EQ(Error::BAD_BUFFER, tmpError)
+            << "unlock with unlocked handle did not fail with BAD_BUFFER";
+      });
+  mGralloc->freeBuffer(invalidHandle);
+#endif
+}
+
+/**
+ * Test IMapper::flush and IMapper::reread.
+ */
+TEST_P(GraphicsMapperHidlTest, FlushRereadBasic) {
+    const auto& info = mDummyDescriptorInfo;
+
+    const native_handle_t* rawHandle;
+    uint32_t stride;
+    ASSERT_NO_FATAL_FAILURE(
+            rawHandle = mGralloc->allocate(mDummyDescriptorInfo, false, false, &stride));
+
+    const native_handle_t* writeBufferHandle;
+    const native_handle_t* readBufferHandle;
+    ASSERT_NO_FATAL_FAILURE(writeBufferHandle = mGralloc->importBuffer(rawHandle));
+    ASSERT_NO_FATAL_FAILURE(readBufferHandle = mGralloc->importBuffer(rawHandle));
+
+    // lock buffer for writing
+    const IMapper::Rect region{0, 0, static_cast<int32_t>(info.width),
+                               static_cast<int32_t>(info.height)};
+    uint8_t* writeData;
+    ASSERT_NO_FATAL_FAILURE(
+            writeData = static_cast<uint8_t*>(mGralloc->lock(
+                    writeBufferHandle, static_cast<uint64_t>(BufferUsage::CPU_WRITE_OFTEN), region,
+                    -1)));
+
+    uint8_t* readData;
+    ASSERT_NO_FATAL_FAILURE(
+            readData = static_cast<uint8_t*>(mGralloc->lock(
+                    readBufferHandle, static_cast<uint64_t>(BufferUsage::CPU_READ_OFTEN), region,
+                    -1)));
+
+    fillRGBA8888(writeData, info.height, stride * 4, info.width * 4);
+
+    int fence;
+    ASSERT_NO_FATAL_FAILURE(fence = mGralloc->flushLockedBuffer(writeBufferHandle));
+    ASSERT_EQ(0, sync_wait(fence, 3500));
+    close(fence);
+
+    ASSERT_NO_FATAL_FAILURE(mGralloc->rereadLockedBuffer(readBufferHandle));
+
+    ASSERT_NO_FATAL_FAILURE(verifyRGBA8888(readData, info.height, stride * 4, info.width * 4));
+
+    ASSERT_NO_FATAL_FAILURE(fence = mGralloc->unlock(readBufferHandle));
+    if (fence >= 0) {
+        close(fence);
+    }
+    ASSERT_NO_FATAL_FAILURE(fence = mGralloc->unlock(writeBufferHandle));
+    if (fence >= 0) {
+        close(fence);
+    }
+}
+
+/**
+ * Test IMapper::flushLockedBuffer with bad buffer
+ */
+TEST_P(GraphicsMapperHidlTest, FlushLockedBufferBadBuffer) {
+    ASSERT_NO_FATAL_FAILURE(mGralloc->getMapper()->flushLockedBuffer(
+            nullptr, [&](const auto& tmpError, const auto& /*tmpReleaseFence*/) {
+                ASSERT_EQ(Error::BAD_BUFFER, tmpError);
+            }));
+}
+
+/**
+ * Test IMapper::rereadLockedBuffer with bad buffer
+ */
+TEST_P(GraphicsMapperHidlTest, RereadLockedBufferBadBuffer) {
+    ASSERT_EQ(Error::BAD_BUFFER, mGralloc->getMapper()->rereadLockedBuffer(nullptr));
+}
+
+/**
+ * Test IMapper::isSupported with required format RGBA_8888
+ */
+TEST_P(GraphicsMapperHidlTest, IsSupportedRGBA8888) {
+    const auto& info = mDummyDescriptorInfo;
+    bool supported = false;
+
+    ASSERT_NO_FATAL_FAILURE(supported = mGralloc->isSupported(info));
+    ASSERT_TRUE(supported);
+}
+
+/**
+ * Test IMapper::isSupported with required format YV12
+ */
+TEST_P(GraphicsMapperHidlTest, IsSupportedYV12) {
+    auto info = mDummyDescriptorInfo;
+    info.format = PixelFormat::YV12;
+    bool supported = false;
+
+    ASSERT_NO_FATAL_FAILURE(supported = mGralloc->isSupported(info));
+    ASSERT_TRUE(supported);
+}
+
+/**
+ * Test IMapper::isSupported with optional format Y16
+ */
+TEST_P(GraphicsMapperHidlTest, IsSupportedY16) {
+    auto info = mDummyDescriptorInfo;
+    info.format = PixelFormat::Y16;
+    bool supported = false;
+
+    ASSERT_NO_FATAL_FAILURE(supported = mGralloc->isSupported(info));
+}
+
+/**
+ * Test IMapper::get(BufferId)
+ */
+TEST_P(GraphicsMapperHidlTest, GetBufferId) {
+    testGet(mDummyDescriptorInfo, gralloc4::MetadataType_BufferId,
+            [](const IMapper::BufferDescriptorInfo& /*info*/, const hidl_vec<uint8_t>& vec) {
+                uint64_t bufferId = 0;
+                ASSERT_EQ(NO_ERROR, gralloc4::decodeBufferId(vec, &bufferId));
+            });
+}
+
+/**
+ * Test IMapper::get(Name)
+ */
+TEST_P(GraphicsMapperHidlTest, GetName) {
+    testGet(mDummyDescriptorInfo, gralloc4::MetadataType_Name,
+            [](const IMapper::BufferDescriptorInfo& info, const hidl_vec<uint8_t>& vec) {
+                std::string name;
+                ASSERT_EQ(NO_ERROR, gralloc4::decodeName(vec, &name));
+                EXPECT_EQ(info.name, name);
+            });
+}
+
+/**
+ * Test IMapper::get(Width)
+ */
+TEST_P(GraphicsMapperHidlTest, GetWidth) {
+    testGet(mDummyDescriptorInfo, gralloc4::MetadataType_Width,
+            [](const IMapper::BufferDescriptorInfo& info, const hidl_vec<uint8_t>& vec) {
+                uint64_t width = 0;
+                ASSERT_EQ(NO_ERROR, gralloc4::decodeWidth(vec, &width));
+                EXPECT_EQ(info.width, width);
+            });
+}
+
+/**
+ * Test IMapper::get(Height)
+ */
+TEST_P(GraphicsMapperHidlTest, GetHeight) {
+    testGet(mDummyDescriptorInfo, gralloc4::MetadataType_Height,
+            [](const IMapper::BufferDescriptorInfo& info, const hidl_vec<uint8_t>& vec) {
+                uint64_t height = 0;
+                ASSERT_EQ(NO_ERROR, gralloc4::decodeHeight(vec, &height));
+                EXPECT_EQ(info.height, height);
+            });
+}
+
+/**
+ * Test IMapper::get(LayerCount)
+ */
+TEST_P(GraphicsMapperHidlTest, GetLayerCount) {
+    testGet(mDummyDescriptorInfo, gralloc4::MetadataType_LayerCount,
+            [](const IMapper::BufferDescriptorInfo& info, const hidl_vec<uint8_t>& vec) {
+                uint64_t layerCount = 0;
+                ASSERT_EQ(NO_ERROR, gralloc4::decodeLayerCount(vec, &layerCount));
+                EXPECT_EQ(info.layerCount, layerCount);
+            });
+}
+
+/**
+ * Test IMapper::get(PixelFormatRequested)
+ */
+TEST_P(GraphicsMapperHidlTest, GetPixelFormatRequested) {
+    testGet(mDummyDescriptorInfo, gralloc4::MetadataType_PixelFormatRequested,
+            [](const IMapper::BufferDescriptorInfo& info, const hidl_vec<uint8_t>& vec) {
+                PixelFormat pixelFormatRequested = PixelFormat::BLOB;
+                ASSERT_EQ(NO_ERROR,
+                          gralloc4::decodePixelFormatRequested(vec, &pixelFormatRequested));
+                EXPECT_EQ(info.format, pixelFormatRequested);
+            });
+}
+
+/**
+ * Test IMapper::get(PixelFormatFourCC)
+ */
+TEST_P(GraphicsMapperHidlTest, GetPixelFormatFourCC) {
+    testGet(mDummyDescriptorInfo, gralloc4::MetadataType_PixelFormatFourCC,
+            [](const IMapper::BufferDescriptorInfo& /*info*/, const hidl_vec<uint8_t>& vec) {
+                uint32_t pixelFormatFourCC = 0;
+                ASSERT_EQ(NO_ERROR, gralloc4::decodePixelFormatFourCC(vec, &pixelFormatFourCC));
+            });
+}
+
+/**
+ * Test IMapper::get(PixelFormatModifier)
+ */
+TEST_P(GraphicsMapperHidlTest, GetPixelFormatModifier) {
+    testGet(mDummyDescriptorInfo, gralloc4::MetadataType_PixelFormatModifier,
+            [](const IMapper::BufferDescriptorInfo& /*info*/, const hidl_vec<uint8_t>& vec) {
+                uint64_t pixelFormatModifier = 0;
+                ASSERT_EQ(NO_ERROR, gralloc4::decodePixelFormatModifier(vec, &pixelFormatModifier));
+            });
+}
+
+/**
+ * Test IMapper::get(Usage)
+ */
+TEST_P(GraphicsMapperHidlTest, GetUsage) {
+    testGet(mDummyDescriptorInfo, gralloc4::MetadataType_Usage,
+            [](const IMapper::BufferDescriptorInfo& info, const hidl_vec<uint8_t>& vec) {
+                uint64_t usage = 0;
+                ASSERT_EQ(NO_ERROR, gralloc4::decodeUsage(vec, &usage));
+                EXPECT_EQ(info.usage, usage);
+            });
+}
+
+/**
+ * Test IMapper::get(AllocationSize)
+ */
+TEST_P(GraphicsMapperHidlTest, GetAllocationSize) {
+    testGet(mDummyDescriptorInfo, gralloc4::MetadataType_AllocationSize,
+            [](const IMapper::BufferDescriptorInfo& /*info*/, const hidl_vec<uint8_t>& vec) {
+                uint64_t allocationSize = 0;
+                ASSERT_EQ(NO_ERROR, gralloc4::decodeAllocationSize(vec, &allocationSize));
+            });
+}
+
+/**
+ * Test IMapper::get(ProtectedContent)
+ */
+TEST_P(GraphicsMapperHidlTest, GetProtectedContent) {
+    auto info = mDummyDescriptorInfo;
+    info.usage = BufferUsage::PROTECTED | BufferUsage::COMPOSER_OVERLAY;
+
+    const native_handle_t* bufferHandle = nullptr;
+    bufferHandle = mGralloc->allocate(info, true, true);
+    if (bufferHandle) {
+        GTEST_SUCCEED() << "unable to allocate protected content";
+    }
+
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(Error::NONE,
+              mGralloc->get(bufferHandle, gralloc4::MetadataType_ProtectedContent, &vec));
+
+    uint64_t protectedContent = 0;
+    ASSERT_EQ(NO_ERROR, gralloc4::decodeProtectedContent(vec, &protectedContent));
+    EXPECT_EQ(1, protectedContent);
+}
+
+/**
+ * Test IMapper::get(Compression)
+ */
+TEST_P(GraphicsMapperHidlTest, GetCompression) {
+    auto info = mDummyDescriptorInfo;
+    info.usage = static_cast<uint64_t>(BufferUsage::CPU_WRITE_OFTEN | BufferUsage::CPU_READ_OFTEN);
+
+    testGet(info, gralloc4::MetadataType_Compression,
+            [](const IMapper::BufferDescriptorInfo& /*info*/, const hidl_vec<uint8_t>& vec) {
+                ExtendableType compression = gralloc4::Compression_DisplayStreamCompression;
+                ASSERT_EQ(NO_ERROR, gralloc4::decodeCompression(vec, &compression));
+
+                EXPECT_EQ(gralloc4::Compression_None.name, compression.name);
+                EXPECT_EQ(gralloc4::Compression_None.value, compression.value);
+            });
+}
+
+/**
+ * Test IMapper::get(Interlaced)
+ */
+TEST_P(GraphicsMapperHidlTest, GetInterlaced) {
+    testGet(mDummyDescriptorInfo, gralloc4::MetadataType_Interlaced,
+            [](const IMapper::BufferDescriptorInfo& /*info*/, const hidl_vec<uint8_t>& vec) {
+                ExtendableType interlaced = gralloc4::Interlaced_TopBottom;
+                ASSERT_EQ(NO_ERROR, gralloc4::decodeInterlaced(vec, &interlaced));
+
+                EXPECT_EQ(gralloc4::Interlaced_None.name, interlaced.name);
+                EXPECT_EQ(gralloc4::Interlaced_None.value, interlaced.value);
+            });
+}
+
+/**
+ * Test IMapper::get(ChromaSiting)
+ */
+TEST_P(GraphicsMapperHidlTest, GetChromaSiting) {
+    testGet(mDummyDescriptorInfo, gralloc4::MetadataType_ChromaSiting,
+            [](const IMapper::BufferDescriptorInfo& /*info*/, const hidl_vec<uint8_t>& vec) {
+                ExtendableType chromaSiting = gralloc4::ChromaSiting_Unknown;
+                ASSERT_EQ(NO_ERROR, gralloc4::decodeChromaSiting(vec, &chromaSiting));
+
+                EXPECT_EQ(gralloc4::ChromaSiting_None.name, chromaSiting.name);
+                EXPECT_EQ(gralloc4::ChromaSiting_None.value, chromaSiting.value);
+            });
+}
+
+/**
+ * Test IMapper::get(PlaneLayouts)
+ */
+TEST_P(GraphicsMapperHidlTest, GetPlaneLayouts) {
+    const native_handle_t* bufferHandle = nullptr;
+    ASSERT_NO_FATAL_FAILURE(bufferHandle = mGralloc->allocate(mDummyDescriptorInfo, true));
+
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(Error::NONE, mGralloc->get(bufferHandle, gralloc4::MetadataType_PlaneLayouts, &vec));
+
+    std::vector<PlaneLayout> planeLayouts;
+    ASSERT_EQ(NO_ERROR, gralloc4::decodePlaneLayouts(vec, &planeLayouts));
+
+    ASSERT_NO_FATAL_FAILURE(verifyDummyDescriptorInfoPlaneLayouts(planeLayouts));
+}
+
+/**
+ * Test IMapper::get(Dataspace)
+ */
+TEST_P(GraphicsMapperHidlTest, GetDataspace) {
+    testGet(mDummyDescriptorInfo, gralloc4::MetadataType_Dataspace,
+            [](const IMapper::BufferDescriptorInfo& /*info*/, const hidl_vec<uint8_t>& vec) {
+                Dataspace dataspace = Dataspace::DISPLAY_P3;
+                ASSERT_EQ(NO_ERROR, gralloc4::decodeDataspace(vec, &dataspace));
+                EXPECT_EQ(Dataspace::UNKNOWN, dataspace);
+            });
+}
+
+/**
+ * Test IMapper::get(BlendMode)
+ */
+TEST_P(GraphicsMapperHidlTest, GetBlendMode) {
+    testGet(mDummyDescriptorInfo, gralloc4::MetadataType_BlendMode,
+            [](const IMapper::BufferDescriptorInfo& /*info*/, const hidl_vec<uint8_t>& vec) {
+                BlendMode blendMode = BlendMode::NONE;
+                ASSERT_EQ(NO_ERROR, gralloc4::decodeBlendMode(vec, &blendMode));
+                EXPECT_EQ(BlendMode::INVALID, blendMode);
+            });
+}
+
+/**
+ * Test IMapper::get(Smpte2086)
+ */
+TEST_P(GraphicsMapperHidlTest, GetSmpte2086) {
+    testGet(mDummyDescriptorInfo, gralloc4::MetadataType_Smpte2086,
+            [](const IMapper::BufferDescriptorInfo& /*info*/, const hidl_vec<uint8_t>& vec) {
+                std::optional<Smpte2086> smpte2086;
+                ASSERT_EQ(NO_ERROR, gralloc4::decodeSmpte2086(vec, &smpte2086));
+                EXPECT_FALSE(smpte2086.has_value());
+            });
+}
+
+/**
+ * Test IMapper::get(Cta861_3)
+ */
+TEST_P(GraphicsMapperHidlTest, GetCta861_3) {
+    testGet(mDummyDescriptorInfo, gralloc4::MetadataType_Cta861_3,
+            [](const IMapper::BufferDescriptorInfo& /*info*/, const hidl_vec<uint8_t>& vec) {
+                std::optional<Cta861_3> cta861_3;
+                ASSERT_EQ(NO_ERROR, gralloc4::decodeCta861_3(vec, &cta861_3));
+                EXPECT_FALSE(cta861_3.has_value());
+            });
+}
+
+/**
+ * Test IMapper::get(Smpte2094_40)
+ */
+TEST_P(GraphicsMapperHidlTest, GetSmpte2094_40) {
+    testGet(mDummyDescriptorInfo, gralloc4::MetadataType_Smpte2094_40,
+            [](const IMapper::BufferDescriptorInfo& /*info*/, const hidl_vec<uint8_t>& vec) {
+                std::optional<std::vector<uint8_t>> smpte2094_40;
+                ASSERT_EQ(NO_ERROR, gralloc4::decodeSmpte2094_40(vec, &smpte2094_40));
+                EXPECT_FALSE(smpte2094_40.has_value());
+            });
+}
+
+/**
+ * Test IMapper::get(metadata) with a bad buffer
+ */
+TEST_P(GraphicsMapperHidlTest, GetMetadataBadValue) {
+    const native_handle_t* bufferHandle = nullptr;
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->get(bufferHandle, gralloc4::MetadataType_BufferId, &vec));
+    ASSERT_EQ(0, vec.size());
+    ASSERT_EQ(Error::BAD_BUFFER, mGralloc->get(bufferHandle, gralloc4::MetadataType_Name, &vec));
+    ASSERT_EQ(0, vec.size());
+    ASSERT_EQ(Error::BAD_BUFFER, mGralloc->get(bufferHandle, gralloc4::MetadataType_Width, &vec));
+    ASSERT_EQ(0, vec.size());
+    ASSERT_EQ(Error::BAD_BUFFER, mGralloc->get(bufferHandle, gralloc4::MetadataType_Height, &vec));
+    ASSERT_EQ(0, vec.size());
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->get(bufferHandle, gralloc4::MetadataType_LayerCount, &vec));
+    ASSERT_EQ(0, vec.size());
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->get(bufferHandle, gralloc4::MetadataType_PixelFormatRequested, &vec));
+    ASSERT_EQ(0, vec.size());
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->get(bufferHandle, gralloc4::MetadataType_PixelFormatFourCC, &vec));
+    ASSERT_EQ(0, vec.size());
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->get(bufferHandle, gralloc4::MetadataType_PixelFormatModifier, &vec));
+    ASSERT_EQ(0, vec.size());
+    ASSERT_EQ(Error::BAD_BUFFER, mGralloc->get(bufferHandle, gralloc4::MetadataType_Usage, &vec));
+    ASSERT_EQ(0, vec.size());
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->get(bufferHandle, gralloc4::MetadataType_AllocationSize, &vec));
+    ASSERT_EQ(0, vec.size());
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->get(bufferHandle, gralloc4::MetadataType_ProtectedContent, &vec));
+    ASSERT_EQ(0, vec.size());
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->get(bufferHandle, gralloc4::MetadataType_Compression, &vec));
+    ASSERT_EQ(0, vec.size());
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->get(bufferHandle, gralloc4::MetadataType_Interlaced, &vec));
+    ASSERT_EQ(0, vec.size());
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->get(bufferHandle, gralloc4::MetadataType_ChromaSiting, &vec));
+    ASSERT_EQ(0, vec.size());
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->get(bufferHandle, gralloc4::MetadataType_PlaneLayouts, &vec));
+    ASSERT_EQ(0, vec.size());
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->get(bufferHandle, gralloc4::MetadataType_Dataspace, &vec));
+    ASSERT_EQ(0, vec.size());
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->get(bufferHandle, gralloc4::MetadataType_BlendMode, &vec));
+    ASSERT_EQ(0, vec.size());
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->get(bufferHandle, gralloc4::MetadataType_Smpte2086, &vec));
+    ASSERT_EQ(0, vec.size());
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->get(bufferHandle, gralloc4::MetadataType_Cta861_3, &vec));
+    ASSERT_EQ(0, vec.size());
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->get(bufferHandle, gralloc4::MetadataType_Smpte2094_40, &vec));
+    ASSERT_EQ(0, vec.size());
+}
+
+/**
+ * Test IMapper::get(metadata) for unsupported metadata
+ */
+TEST_P(GraphicsMapperHidlTest, GetUnsupportedMetadata) {
+    const native_handle_t* bufferHandle = nullptr;
+    ASSERT_NO_FATAL_FAILURE(bufferHandle = mGralloc->allocate(mDummyDescriptorInfo, true));
+
+    MetadataType metadataTypeFake = {"FAKE", 1};
+
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(Error::UNSUPPORTED, mGralloc->get(bufferHandle, metadataTypeFake, &vec));
+    ASSERT_EQ(0, vec.size());
+}
+
+/**
+ * Test IMapper::get(metadata) for unsupported standard metadata
+ */
+TEST_P(GraphicsMapperHidlTest, GetUnsupportedStandardMetadata) {
+    const native_handle_t* bufferHandle = nullptr;
+    ASSERT_NO_FATAL_FAILURE(bufferHandle = mGralloc->allocate(mDummyDescriptorInfo, true));
+
+    MetadataType metadataTypeFake = {GRALLOC4_STANDARD_METADATA_TYPE, 9999};
+
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(Error::UNSUPPORTED, mGralloc->get(bufferHandle, metadataTypeFake, &vec));
+    ASSERT_EQ(0, vec.size());
+}
+
+/**
+ * Test IMapper::set(PixelFormatFourCC)
+ */
+TEST_P(GraphicsMapperHidlTest, SetPixelFormatFourCC) {
+    uint32_t pixelFormatFourCC = 0x34324142;  // DRM_FORMAT_BGRA8888
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(NO_ERROR, gralloc4::encodePixelFormatFourCC(pixelFormatFourCC, &vec));
+
+    testSet(mDummyDescriptorInfo, gralloc4::MetadataType_PixelFormatFourCC, vec,
+            [&](const IMapper::BufferDescriptorInfo& /*info*/, const hidl_vec<uint8_t>& vec) {
+                uint32_t realPixelFormatFourCC = 0;
+                ASSERT_EQ(NO_ERROR, gralloc4::decodePixelFormatFourCC(vec, &realPixelFormatFourCC));
+                EXPECT_EQ(pixelFormatFourCC, realPixelFormatFourCC);
+            });
+}
+
+/**
+ * Test IMapper::set(PixelFormatModifier)
+ */
+TEST_P(GraphicsMapperHidlTest, SetPixelFormatModifier) {
+    uint64_t pixelFormatModifier = 10;
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(NO_ERROR, gralloc4::encodePixelFormatModifier(pixelFormatModifier, &vec));
+
+    testSet(mDummyDescriptorInfo, gralloc4::MetadataType_PixelFormatModifier, vec,
+            [&](const IMapper::BufferDescriptorInfo& /*info*/, const hidl_vec<uint8_t>& vec) {
+                uint64_t realPixelFormatModifier = 0;
+                ASSERT_EQ(NO_ERROR,
+                          gralloc4::decodePixelFormatModifier(vec, &realPixelFormatModifier));
+                EXPECT_EQ(pixelFormatModifier, realPixelFormatModifier);
+            });
+}
+
+/**
+ * Test IMapper::set(Usage) remove flag
+ */
+TEST_P(GraphicsMapperHidlTest, SetUsageRemoveBit) {
+    uint64_t usage = static_cast<uint64_t>(BufferUsage::CPU_WRITE_OFTEN);
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(NO_ERROR, gralloc4::encodeUsage(usage, &vec));
+
+    testSet(mDummyDescriptorInfo, gralloc4::MetadataType_Usage, vec,
+            [&](const IMapper::BufferDescriptorInfo& /*info*/, const hidl_vec<uint8_t>& vec) {
+                uint64_t realUsage = 0;
+                ASSERT_EQ(NO_ERROR, gralloc4::decodeUsage(vec, &realUsage));
+                EXPECT_EQ(usage, realUsage);
+            });
+}
+/**
+ * Test IMapper::set(Usage) add flag
+ */
+TEST_P(GraphicsMapperHidlTest, SetUsageAddBit) {
+    uint64_t usage = mDummyDescriptorInfo.usage | static_cast<uint64_t>(BufferUsage::GPU_TEXTURE);
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(NO_ERROR, gralloc4::encodeUsage(usage, &vec));
+
+    testSet(mDummyDescriptorInfo, gralloc4::MetadataType_Usage, vec,
+            [&](const IMapper::BufferDescriptorInfo& /*info*/, const hidl_vec<uint8_t>& vec) {
+                uint64_t realUsage = 0;
+                ASSERT_EQ(NO_ERROR, gralloc4::decodeUsage(vec, &realUsage));
+                EXPECT_EQ(usage, realUsage);
+            });
+}
+
+/**
+ * Test IMapper::set(Usage) to test protected content
+ */
+TEST_P(GraphicsMapperHidlTest, SetUsageProtected) {
+    const native_handle_t* bufferHandle = nullptr;
+    auto info = mDummyDescriptorInfo;
+    info.usage = BufferUsage::PROTECTED | BufferUsage::COMPOSER_OVERLAY;
+
+    bufferHandle = mGralloc->allocate(info, true, true);
+    if (bufferHandle) {
+        GTEST_SUCCEED() << "unable to allocate protected content";
+    }
+
+    uint64_t usage = static_cast<uint64_t>(BufferUsage::COMPOSER_OVERLAY);
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(NO_ERROR, gralloc4::encodeUsage(usage, &vec));
+
+    Error err = mGralloc->set(bufferHandle, gralloc4::MetadataType_Usage, vec);
+    ASSERT_EQ(err, Error::UNSUPPORTED);
+    vec.resize(0);
+
+    uint64_t realUsage = 0;
+    ASSERT_EQ(Error::NONE, mGralloc->get(bufferHandle, gralloc4::MetadataType_Usage, &vec));
+    ASSERT_EQ(NO_ERROR, gralloc4::decodeUsage(vec, &realUsage));
+    EXPECT_EQ(info.usage, realUsage);
+}
+
+/**
+ * Test IMapper::set(AllocationSize)
+ */
+TEST_P(GraphicsMapperHidlTest, SetAllocationSize) {
+    uint64_t allocationSize = 1000000;
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(NO_ERROR, gralloc4::encodeAllocationSize(allocationSize, &vec));
+
+    testSet(mDummyDescriptorInfo, gralloc4::MetadataType_AllocationSize, vec,
+            [&](const IMapper::BufferDescriptorInfo& /*info*/, const hidl_vec<uint8_t>& vec) {
+                uint64_t realAllocationSize = 0;
+                ASSERT_EQ(NO_ERROR, gralloc4::decodeAllocationSize(vec, &realAllocationSize));
+                EXPECT_EQ(allocationSize, realAllocationSize);
+            });
+}
+
+/**
+ * Test IMapper::set(ProtectedContent)
+ */
+TEST_P(GraphicsMapperHidlTest, SetProtectedContent) {
+    const native_handle_t* bufferHandle = nullptr;
+    auto info = mDummyDescriptorInfo;
+    info.usage = BufferUsage::PROTECTED | BufferUsage::COMPOSER_OVERLAY;
+
+    bufferHandle = mGralloc->allocate(info, true, true);
+    if (bufferHandle) {
+        GTEST_SUCCEED() << "unable to allocate protected content";
+    }
+
+    uint64_t protectedContent = 0;
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(NO_ERROR, gralloc4::encodeProtectedContent(protectedContent, &vec));
+
+    Error err = mGralloc->set(bufferHandle, gralloc4::MetadataType_ProtectedContent, vec);
+    ASSERT_EQ(err, Error::UNSUPPORTED);
+    vec.resize(0);
+
+    uint64_t realProtectedContent = 0;
+    ASSERT_EQ(Error::NONE,
+              mGralloc->get(bufferHandle, gralloc4::MetadataType_ProtectedContent, &vec));
+    ASSERT_EQ(NO_ERROR, gralloc4::decodeProtectedContent(vec, &realProtectedContent));
+    EXPECT_EQ(1, realProtectedContent);
+}
+
+/**
+ * Test IMapper::set(Compression)
+ */
+TEST_P(GraphicsMapperHidlTest, SetCompression) {
+    auto info = mDummyDescriptorInfo;
+    info.usage = static_cast<uint64_t>(BufferUsage::CPU_WRITE_OFTEN | BufferUsage::CPU_READ_OFTEN);
+
+    ExtendableType compression = gralloc4::Compression_DisplayStreamCompression;
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(NO_ERROR, gralloc4::encodeCompression(compression, &vec));
+
+    testSet(info, gralloc4::MetadataType_Compression, vec,
+            [&](const IMapper::BufferDescriptorInfo& /*info*/, const hidl_vec<uint8_t>& vec) {
+                ExtendableType realCompression = gralloc4::Compression_None;
+                ASSERT_EQ(NO_ERROR, gralloc4::decodeCompression(vec, &realCompression));
+
+                EXPECT_EQ(compression.name, realCompression.name);
+                EXPECT_EQ(compression.value, realCompression.value);
+            });
+}
+
+/**
+ * Test IMapper::set(Interlaced)
+ */
+TEST_P(GraphicsMapperHidlTest, SetInterlaced) {
+    ExtendableType interlaced = gralloc4::Interlaced_RightLeft;
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(NO_ERROR, gralloc4::encodeInterlaced(interlaced, &vec));
+
+    testSet(mDummyDescriptorInfo, gralloc4::MetadataType_Interlaced, vec,
+            [&](const IMapper::BufferDescriptorInfo& /*info*/, const hidl_vec<uint8_t>& vec) {
+                ExtendableType realInterlaced = gralloc4::Interlaced_None;
+                ASSERT_EQ(NO_ERROR, gralloc4::decodeInterlaced(vec, &realInterlaced));
+
+                EXPECT_EQ(interlaced.name, realInterlaced.name);
+                EXPECT_EQ(interlaced.value, realInterlaced.value);
+            });
+}
+
+/**
+ * Test IMapper::set(ChromaSiting)
+ */
+TEST_P(GraphicsMapperHidlTest, SetChromaSiting) {
+    ExtendableType chromaSiting = gralloc4::ChromaSiting_SitedInterstitial;
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(NO_ERROR, gralloc4::encodeChromaSiting(chromaSiting, &vec));
+
+    testSet(mDummyDescriptorInfo, gralloc4::MetadataType_ChromaSiting, vec,
+            [&](const IMapper::BufferDescriptorInfo& /*info*/, const hidl_vec<uint8_t>& vec) {
+                ExtendableType realChromaSiting = gralloc4::ChromaSiting_None;
+                ASSERT_EQ(NO_ERROR, gralloc4::decodeChromaSiting(vec, &realChromaSiting));
+
+                EXPECT_EQ(chromaSiting.name, realChromaSiting.name);
+                EXPECT_EQ(chromaSiting.value, realChromaSiting.value);
+            });
+}
+
+/**
+ * Test IMapper::set(PlaneLayouts)
+ */
+TEST_P(GraphicsMapperHidlTest, SetPlaneLayouts) {
+    const native_handle_t* bufferHandle = nullptr;
+    auto info = mDummyDescriptorInfo;
+    ASSERT_NO_FATAL_FAILURE(bufferHandle = mGralloc->allocate(info, true));
+
+    std::vector<PlaneLayout> planeLayouts;
+    PlaneLayout planeLayoutA;
+    PlaneLayout planeLayoutRGB;
+    PlaneLayoutComponent component;
+
+    planeLayoutA.offsetInBytes = 0;
+    planeLayoutA.sampleIncrementInBits = 8;
+    planeLayoutA.strideInBytes = info.width + 20;
+    planeLayoutA.widthInSamples = info.width;
+    planeLayoutA.heightInSamples = info.height;
+    planeLayoutA.totalSizeInBytes = planeLayoutA.strideInBytes * info.height;
+    planeLayoutA.horizontalSubsampling = 1;
+    planeLayoutA.verticalSubsampling = 1;
+    planeLayoutA.crop.left = 0;
+    planeLayoutA.crop.top = 0;
+    planeLayoutA.crop.right = info.width;
+    planeLayoutA.crop.bottom = info.height;
+
+    component.type = gralloc4::PlaneLayoutComponentType_A;
+    component.offsetInBits = 0;
+    component.sizeInBits = 8;
+    planeLayoutA.components.push_back(component);
+
+    planeLayouts.push_back(planeLayoutA);
+
+    planeLayoutRGB.offsetInBytes = 0;
+    planeLayoutRGB.sampleIncrementInBits = 32;
+    planeLayoutRGB.strideInBytes = info.width + 20;
+    planeLayoutRGB.widthInSamples = info.width;
+    planeLayoutRGB.heightInSamples = info.height;
+    planeLayoutRGB.totalSizeInBytes = planeLayoutRGB.strideInBytes * info.height;
+    planeLayoutRGB.horizontalSubsampling = 1;
+    planeLayoutRGB.verticalSubsampling = 1;
+    planeLayoutRGB.crop.left = 0;
+    planeLayoutRGB.crop.top = 0;
+    planeLayoutRGB.crop.right = info.width;
+    planeLayoutRGB.crop.bottom = info.height;
+
+    component.type = gralloc4::PlaneLayoutComponentType_R;
+    planeLayoutRGB.components.push_back(component);
+    component.type = gralloc4::PlaneLayoutComponentType_G;
+    planeLayoutRGB.components.push_back(component);
+    component.type = gralloc4::PlaneLayoutComponentType_B;
+    planeLayoutRGB.components.push_back(component);
+
+    planeLayouts.push_back(planeLayoutRGB);
+
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(NO_ERROR, gralloc4::encodePlaneLayouts(planeLayouts, &vec));
+
+    Error err = mGralloc->set(bufferHandle, gralloc4::MetadataType_PlaneLayouts, vec);
+    if (err == Error::UNSUPPORTED) {
+        GTEST_SUCCEED() << "setting this metadata is unsupported";
+    }
+    ASSERT_EQ(err, Error::NONE);
+
+    std::vector<PlaneLayout> realPlaneLayouts;
+    ASSERT_EQ(NO_ERROR, gralloc4::decodePlaneLayouts(vec, &realPlaneLayouts));
+
+    ASSERT_EQ(planeLayouts.size(), realPlaneLayouts.size());
+
+    for (int i = 0; i < realPlaneLayouts.size(); i++) {
+        const auto& planeLayout = planeLayouts[i];
+        const auto& realPlaneLayout = realPlaneLayouts[i];
+
+        EXPECT_EQ(planeLayout.offsetInBytes, realPlaneLayout.offsetInBytes);
+        EXPECT_EQ(planeLayout.sampleIncrementInBits, realPlaneLayout.sampleIncrementInBits);
+        EXPECT_EQ(planeLayout.strideInBytes, realPlaneLayout.strideInBytes);
+        EXPECT_EQ(planeLayout.widthInSamples, realPlaneLayout.widthInSamples);
+        EXPECT_EQ(planeLayout.heightInSamples, realPlaneLayout.heightInSamples);
+        EXPECT_LE(planeLayout.totalSizeInBytes, realPlaneLayout.totalSizeInBytes);
+        EXPECT_EQ(planeLayout.horizontalSubsampling, realPlaneLayout.horizontalSubsampling);
+        EXPECT_EQ(planeLayout.verticalSubsampling, realPlaneLayout.verticalSubsampling);
+
+        EXPECT_EQ(planeLayout.crop.left, realPlaneLayout.crop.left);
+        EXPECT_EQ(planeLayout.crop.top, realPlaneLayout.crop.top);
+        EXPECT_EQ(planeLayout.crop.right, realPlaneLayout.crop.right);
+        EXPECT_EQ(planeLayout.crop.bottom, realPlaneLayout.crop.bottom);
+
+        ASSERT_EQ(planeLayout.components.size(), realPlaneLayout.components.size());
+
+        for (int j = 0; j < realPlaneLayout.components.size(); j++) {
+            const auto& component = planeLayout.components[j];
+            const auto& realComponent = realPlaneLayout.components[j];
+
+            EXPECT_EQ(component.type.name, realComponent.type.name);
+            EXPECT_EQ(component.type.value, realComponent.type.value);
+            EXPECT_EQ(component.sizeInBits, realComponent.sizeInBits);
+            EXPECT_EQ(component.offsetInBits, realComponent.offsetInBits);
+        }
+    }
+}
+
+/**
+ * Test IMapper::set(Dataspace)
+ */
+TEST_P(GraphicsMapperHidlTest, SetDataspace) {
+    Dataspace dataspace = Dataspace::SRGB_LINEAR;
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(NO_ERROR, gralloc4::encodeDataspace(dataspace, &vec));
+
+    testSet(mDummyDescriptorInfo, gralloc4::MetadataType_Dataspace, vec,
+            [&](const IMapper::BufferDescriptorInfo& /*info*/, const hidl_vec<uint8_t>& vec) {
+                Dataspace realDataspace = Dataspace::UNKNOWN;
+                ASSERT_EQ(NO_ERROR, gralloc4::decodeDataspace(vec, &realDataspace));
+                EXPECT_EQ(dataspace, realDataspace);
+            });
+}
+
+/**
+ * Test IMapper::set(BlendMode)
+ */
+TEST_P(GraphicsMapperHidlTest, SetBlendMode) {
+    BlendMode blendMode = BlendMode::PREMULTIPLIED;
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(NO_ERROR, gralloc4::encodeBlendMode(blendMode, &vec));
+
+    testSet(mDummyDescriptorInfo, gralloc4::MetadataType_BlendMode, vec,
+            [&](const IMapper::BufferDescriptorInfo& /*info*/, const hidl_vec<uint8_t>& vec) {
+                BlendMode realBlendMode = BlendMode::INVALID;
+                ASSERT_EQ(NO_ERROR, gralloc4::decodeBlendMode(vec, &realBlendMode));
+                EXPECT_EQ(blendMode, realBlendMode);
+            });
+}
+
+/**
+ * Test IMapper::set(Smpte2086)
+ */
+TEST_P(GraphicsMapperHidlTest, SetSmpte2086) {
+    /**
+     * DISPLAY_P3 is a color space that uses the DCI_P3 primaries,
+     * the D65 white point and the SRGB transfer functions.
+     * Rendering Intent: Colorimetric
+     * Primaries:
+     *                  x       y
+     *  green           0.265   0.690
+     *  blue            0.150   0.060
+     *  red             0.680   0.320
+     *  white (D65)     0.3127  0.3290
+     */
+    std::optional<Smpte2086> smpte2086;
+    smpte2086->primaryRed.x = 0.680;
+    smpte2086->primaryRed.y = 0.320;
+    smpte2086->primaryGreen.x = 0.265;
+    smpte2086->primaryGreen.y = 0.690;
+    smpte2086->primaryBlue.x = 0.150;
+    smpte2086->primaryBlue.y = 0.060;
+    smpte2086->whitePoint.x = 0.3127;
+    smpte2086->whitePoint.y = 0.3290;
+    smpte2086->maxLuminance = 100.0;
+    smpte2086->minLuminance = 0.1;
+
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(NO_ERROR, gralloc4::encodeSmpte2086(smpte2086, &vec));
+
+    testSet(mDummyDescriptorInfo, gralloc4::MetadataType_Smpte2086, vec,
+            [&](const IMapper::BufferDescriptorInfo& /*info*/, const hidl_vec<uint8_t>& vec) {
+                std::optional<Smpte2086> realSmpte2086;
+                ASSERT_EQ(NO_ERROR, gralloc4::decodeSmpte2086(vec, &realSmpte2086));
+                ASSERT_TRUE(realSmpte2086.has_value());
+                EXPECT_EQ(smpte2086->primaryRed.x, realSmpte2086->primaryRed.x);
+                EXPECT_EQ(smpte2086->primaryRed.y, realSmpte2086->primaryRed.y);
+                EXPECT_EQ(smpte2086->primaryGreen.x, realSmpte2086->primaryGreen.x);
+                EXPECT_EQ(smpte2086->primaryGreen.y, realSmpte2086->primaryGreen.y);
+                EXPECT_EQ(smpte2086->primaryBlue.x, realSmpte2086->primaryBlue.x);
+                EXPECT_EQ(smpte2086->primaryBlue.y, realSmpte2086->primaryBlue.y);
+                EXPECT_EQ(smpte2086->whitePoint.x, realSmpte2086->whitePoint.x);
+                EXPECT_EQ(smpte2086->whitePoint.y, realSmpte2086->whitePoint.y);
+                EXPECT_EQ(smpte2086->maxLuminance, realSmpte2086->maxLuminance);
+                EXPECT_EQ(smpte2086->minLuminance, realSmpte2086->minLuminance);
+            });
+}
+
+/**
+ * Test IMapper::set(Cta8613)
+ */
+TEST_P(GraphicsMapperHidlTest, SetCta861_3) {
+    std::optional<Cta861_3> cta861_3;
+    cta861_3->maxContentLightLevel = 78.0;
+    cta861_3->maxFrameAverageLightLevel = 62.0;
+
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(NO_ERROR, gralloc4::encodeCta861_3(cta861_3, &vec));
+
+    testSet(mDummyDescriptorInfo, gralloc4::MetadataType_Cta861_3, vec,
+            [&](const IMapper::BufferDescriptorInfo& /*info*/, const hidl_vec<uint8_t>& vec) {
+                std::optional<Cta861_3> realCta861_3;
+                ASSERT_EQ(NO_ERROR, gralloc4::decodeCta861_3(vec, &realCta861_3));
+                ASSERT_TRUE(realCta861_3.has_value());
+                EXPECT_EQ(cta861_3->maxContentLightLevel, realCta861_3->maxContentLightLevel);
+                EXPECT_EQ(cta861_3->maxFrameAverageLightLevel,
+                          realCta861_3->maxFrameAverageLightLevel);
+            });
+}
+
+/**
+ * Test IMapper::set(Smpte2094_40)
+ */
+TEST_P(GraphicsMapperHidlTest, SetSmpte2094_40) {
+    hidl_vec<uint8_t> vec;
+
+    testSet(mDummyDescriptorInfo, gralloc4::MetadataType_Smpte2094_40, vec,
+            [&](const IMapper::BufferDescriptorInfo& /*info*/, const hidl_vec<uint8_t>& vec) {
+                std::optional<std::vector<uint8_t>> realSmpte2094_40;
+                ASSERT_EQ(NO_ERROR, gralloc4::decodeSmpte2094_40(vec, &realSmpte2094_40));
+                EXPECT_FALSE(realSmpte2094_40.has_value());
+            });
+}
+
+/**
+ * Test IMapper::set(metadata) with a bad buffer
+ */
+TEST_P(GraphicsMapperHidlTest, SetMetadataNullBuffer) {
+    const native_handle_t* bufferHandle = nullptr;
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(Error::BAD_BUFFER, mGralloc->set(bufferHandle, gralloc4::MetadataType_BufferId, vec));
+    ASSERT_EQ(Error::BAD_BUFFER, mGralloc->set(bufferHandle, gralloc4::MetadataType_Name, vec));
+    ASSERT_EQ(Error::BAD_BUFFER, mGralloc->set(bufferHandle, gralloc4::MetadataType_Width, vec));
+    ASSERT_EQ(Error::BAD_BUFFER, mGralloc->set(bufferHandle, gralloc4::MetadataType_Height, vec));
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_LayerCount, vec));
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_PixelFormatRequested, vec));
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_PixelFormatFourCC, vec));
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_PixelFormatModifier, vec));
+    ASSERT_EQ(Error::BAD_BUFFER, mGralloc->set(bufferHandle, gralloc4::MetadataType_Usage, vec));
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_AllocationSize, vec));
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_ProtectedContent, vec));
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_Compression, vec));
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_Interlaced, vec));
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_ChromaSiting, vec));
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_PlaneLayouts, vec));
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_Dataspace, vec));
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_BlendMode, vec));
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_Smpte2086, vec));
+    ASSERT_EQ(Error::BAD_BUFFER, mGralloc->set(bufferHandle, gralloc4::MetadataType_Cta861_3, vec));
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_Smpte2094_40, vec));
+}
+
+/**
+ * Test IMapper::set(metadata) for constant metadata
+ */
+TEST_P(GraphicsMapperHidlTest, SetConstantMetadata) {
+    const native_handle_t* bufferHandle = nullptr;
+    ASSERT_NO_FATAL_FAILURE(bufferHandle = mGralloc->allocate(mDummyDescriptorInfo, true));
+
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(Error::BAD_VALUE, mGralloc->set(bufferHandle, gralloc4::MetadataType_BufferId, vec));
+    ASSERT_EQ(Error::BAD_VALUE, mGralloc->set(bufferHandle, gralloc4::MetadataType_Name, vec));
+    ASSERT_EQ(Error::BAD_VALUE, mGralloc->set(bufferHandle, gralloc4::MetadataType_Width, vec));
+    ASSERT_EQ(Error::BAD_VALUE, mGralloc->set(bufferHandle, gralloc4::MetadataType_Height, vec));
+    ASSERT_EQ(Error::BAD_VALUE,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_LayerCount, vec));
+    ASSERT_EQ(Error::BAD_VALUE,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_PixelFormatRequested, vec));
+    ASSERT_EQ(Error::BAD_VALUE, mGralloc->set(bufferHandle, gralloc4::MetadataType_Usage, vec));
+}
+
+/**
+ * Test IMapper::set(metadata) for bad metadata
+ */
+TEST_P(GraphicsMapperHidlTest, SetBadMetadata) {
+    const native_handle_t* bufferHandle = nullptr;
+    ASSERT_NO_FATAL_FAILURE(bufferHandle = mGralloc->allocate(mDummyDescriptorInfo, true));
+
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(Error::UNSUPPORTED,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_BufferId, vec));
+    ASSERT_EQ(Error::UNSUPPORTED, mGralloc->set(bufferHandle, gralloc4::MetadataType_Name, vec));
+    ASSERT_EQ(Error::UNSUPPORTED, mGralloc->set(bufferHandle, gralloc4::MetadataType_Width, vec));
+    ASSERT_EQ(Error::UNSUPPORTED, mGralloc->set(bufferHandle, gralloc4::MetadataType_Height, vec));
+    ASSERT_EQ(Error::UNSUPPORTED,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_LayerCount, vec));
+    ASSERT_EQ(Error::UNSUPPORTED,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_PixelFormatRequested, vec));
+    ASSERT_EQ(Error::UNSUPPORTED,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_PixelFormatFourCC, vec));
+    ASSERT_EQ(Error::UNSUPPORTED,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_PixelFormatModifier, vec));
+    ASSERT_EQ(Error::UNSUPPORTED, mGralloc->set(bufferHandle, gralloc4::MetadataType_Usage, vec));
+    ASSERT_EQ(Error::UNSUPPORTED,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_AllocationSize, vec));
+    ASSERT_EQ(Error::UNSUPPORTED,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_ProtectedContent, vec));
+    ASSERT_EQ(Error::UNSUPPORTED,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_Compression, vec));
+    ASSERT_EQ(Error::UNSUPPORTED,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_Interlaced, vec));
+    ASSERT_EQ(Error::UNSUPPORTED,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_ChromaSiting, vec));
+    ASSERT_EQ(Error::UNSUPPORTED,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_PlaneLayouts, vec));
+    ASSERT_EQ(Error::UNSUPPORTED,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_Dataspace, vec));
+    ASSERT_EQ(Error::UNSUPPORTED,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_BlendMode, vec));
+    ASSERT_EQ(Error::UNSUPPORTED,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_Smpte2086, vec));
+    ASSERT_EQ(Error::UNSUPPORTED,
+              mGralloc->set(bufferHandle, gralloc4::MetadataType_Cta861_3, vec));
+}
+
+/**
+ * Test IMapper::getFromBufferDescriptorInfo(BufferId)
+ */
+TEST_P(GraphicsMapperHidlTest, GetFromBufferDescriptorInfoBufferId) {
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(Error::UNSUPPORTED,
+              mGralloc->getFromBufferDescriptorInfo(mDummyDescriptorInfo,
+                                                    gralloc4::MetadataType_BufferId, &vec));
+}
+
+/**
+ * Test IMapper::getFromBufferDescriptorInfo(Name)
+ */
+TEST_P(GraphicsMapperHidlTest, GetFromBufferDescriptorInfoName) {
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(Error::NONE, mGralloc->getFromBufferDescriptorInfo(
+                                   mDummyDescriptorInfo, gralloc4::MetadataType_Name, &vec));
+
+    std::string name;
+    ASSERT_EQ(NO_ERROR, gralloc4::decodeName(vec, &name));
+    EXPECT_EQ(mDummyDescriptorInfo.name, name);
+}
+
+/**
+ * Test IMapper::getFromBufferDescriptorInfo(Width)
+ */
+TEST_P(GraphicsMapperHidlTest, GetFromBufferDescriptorInfoWidth) {
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(Error::NONE, mGralloc->getFromBufferDescriptorInfo(
+                                   mDummyDescriptorInfo, gralloc4::MetadataType_Width, &vec));
+
+    uint64_t width = 0;
+    ASSERT_EQ(NO_ERROR, gralloc4::decodeWidth(vec, &width));
+    EXPECT_EQ(mDummyDescriptorInfo.width, width);
+}
+
+/**
+ * Test IMapper::getFromBufferDescriptorInfo(Height)
+ */
+TEST_P(GraphicsMapperHidlTest, GetFromBufferDescriptorInfoHeight) {
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(Error::NONE, mGralloc->getFromBufferDescriptorInfo(
+                                   mDummyDescriptorInfo, gralloc4::MetadataType_Height, &vec));
+
+    uint64_t height = 0;
+    ASSERT_EQ(NO_ERROR, gralloc4::decodeHeight(vec, &height));
+    EXPECT_EQ(mDummyDescriptorInfo.height, height);
+}
+
+/**
+ * Test IMapper::getFromBufferDescriptorInfo(PixelFormatRequested)
+ */
+TEST_P(GraphicsMapperHidlTest, GetFromBufferDescriptorInfoPixelFormatRequested) {
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(Error::NONE,
+              mGralloc->getFromBufferDescriptorInfo(
+                      mDummyDescriptorInfo, gralloc4::MetadataType_PixelFormatRequested, &vec));
+
+    PixelFormat pixelFormatRequested = PixelFormat::BLOB;
+    ASSERT_EQ(NO_ERROR, gralloc4::decodePixelFormatRequested(vec, &pixelFormatRequested));
+    EXPECT_EQ(mDummyDescriptorInfo.format, pixelFormatRequested);
+}
+
+/**
+ * Test IMapper::getFromBufferDescriptorInfo(PixelFormatFourCC)
+ */
+TEST_P(GraphicsMapperHidlTest, GetFromBufferDescriptorInfoPixelFormatFourCC) {
+    hidl_vec<uint8_t> vec;
+    Error err = mGralloc->getFromBufferDescriptorInfo(
+            mDummyDescriptorInfo, gralloc4::MetadataType_PixelFormatFourCC, &vec);
+    if (err == Error::UNSUPPORTED) {
+        GTEST_SUCCEED() << "setting this metadata is unsupported";
+    }
+    ASSERT_EQ(err, Error::NONE);
+
+    uint32_t pixelFormatFourCC = 0;
+    ASSERT_EQ(NO_ERROR, gralloc4::decodePixelFormatFourCC(vec, &pixelFormatFourCC));
+}
+
+/**
+ * Test IMapper::getFromBufferDescriptorInfo(PixelFormatModifier)
+ */
+TEST_P(GraphicsMapperHidlTest, GetFromBufferDescriptorInfoPixelFormatModifier) {
+    hidl_vec<uint8_t> vec;
+    Error err = mGralloc->getFromBufferDescriptorInfo(
+            mDummyDescriptorInfo, gralloc4::MetadataType_PixelFormatModifier, &vec);
+    if (err == Error::UNSUPPORTED) {
+        GTEST_SUCCEED() << "setting this metadata is unsupported";
+    }
+    ASSERT_EQ(err, Error::NONE);
+
+    uint64_t pixelFormatModifier = 0;
+    ASSERT_EQ(NO_ERROR, gralloc4::decodePixelFormatModifier(vec, &pixelFormatModifier));
+}
+
+/**
+ * Test IMapper::getFromBufferDescriptorInfo(Usage)
+ */
+TEST_P(GraphicsMapperHidlTest, GetFromBufferDescriptorInfoUsage) {
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(Error::NONE, mGralloc->getFromBufferDescriptorInfo(
+                                   mDummyDescriptorInfo, gralloc4::MetadataType_Usage, &vec));
+
+    uint64_t usage = 0;
+    ASSERT_EQ(NO_ERROR, gralloc4::decodeUsage(vec, &usage));
+    EXPECT_EQ(mDummyDescriptorInfo.usage, usage);
+}
+
+/**
+ * Test IMapper::getFromBufferDescriptorInfo(AllocationSize)
+ */
+TEST_P(GraphicsMapperHidlTest, GetFromBufferDescriptorInfoAllocationSize) {
+    hidl_vec<uint8_t> vec;
+    Error err = mGralloc->getFromBufferDescriptorInfo(mDummyDescriptorInfo,
+                                                      gralloc4::MetadataType_AllocationSize, &vec);
+    if (err == Error::UNSUPPORTED) {
+        GTEST_SUCCEED() << "setting this metadata is unsupported";
+    }
+    ASSERT_EQ(err, Error::NONE);
+
+    uint64_t allocationSize = 0;
+    ASSERT_EQ(NO_ERROR, gralloc4::decodeAllocationSize(vec, &allocationSize));
+}
+
+/**
+ * Test IMapper::getFromBufferDescriptorInfo(ProtectedContent)
+ */
+TEST_P(GraphicsMapperHidlTest, GetFromBufferDescriptorInfoProtectedContent) {
+    auto info = mDummyDescriptorInfo;
+    info.usage = BufferUsage::PROTECTED | BufferUsage::COMPOSER_OVERLAY;
+
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(Error::NONE, mGralloc->getFromBufferDescriptorInfo(
+                                   info, gralloc4::MetadataType_ProtectedContent, &vec));
+
+    uint64_t protectedContent = 0;
+    ASSERT_EQ(NO_ERROR, gralloc4::decodeProtectedContent(vec, &protectedContent));
+    EXPECT_EQ(1, protectedContent);
+}
+
+/**
+ * Test IMapper::getFromBufferDescriptorInfo(Compression)
+ */
+TEST_P(GraphicsMapperHidlTest, GetFromBufferDescriptorInfoCompression) {
+    auto info = mDummyDescriptorInfo;
+    info.usage = static_cast<uint64_t>(BufferUsage::CPU_WRITE_OFTEN | BufferUsage::CPU_READ_OFTEN);
+
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(Error::NONE, mGralloc->getFromBufferDescriptorInfo(
+                                   info, gralloc4::MetadataType_Compression, &vec));
+
+    ExtendableType compression = gralloc4::Compression_DisplayStreamCompression;
+    ASSERT_EQ(NO_ERROR, gralloc4::decodeCompression(vec, &compression));
+
+    EXPECT_EQ(gralloc4::Compression_None.name, compression.name);
+    EXPECT_EQ(gralloc4::Compression_None.value, compression.value);
+}
+
+/**
+ * Test IMapper::getFromBufferDescriptorInfo(Interlaced)
+ */
+TEST_P(GraphicsMapperHidlTest, GetFromBufferDescriptorInfoInterlaced) {
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(Error::NONE, mGralloc->getFromBufferDescriptorInfo(
+                                   mDummyDescriptorInfo, gralloc4::MetadataType_Interlaced, &vec));
+
+    ExtendableType interlaced = gralloc4::Interlaced_TopBottom;
+    ASSERT_EQ(NO_ERROR, gralloc4::decodeInterlaced(vec, &interlaced));
+
+    EXPECT_EQ(gralloc4::Interlaced_None.name, interlaced.name);
+    EXPECT_EQ(gralloc4::Interlaced_None.value, interlaced.value);
+}
+
+/**
+ * Test IMapper::getFromBufferDescriptorInfo(ChromaSiting)
+ */
+TEST_P(GraphicsMapperHidlTest, GetFromBufferDescriptorInfoChromaSiting) {
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(Error::NONE,
+              mGralloc->getFromBufferDescriptorInfo(mDummyDescriptorInfo,
+                                                    gralloc4::MetadataType_ChromaSiting, &vec));
+
+    ExtendableType chromaSiting = gralloc4::ChromaSiting_CositedHorizontal;
+    ASSERT_EQ(NO_ERROR, gralloc4::decodeChromaSiting(vec, &chromaSiting));
+
+    EXPECT_EQ(gralloc4::ChromaSiting_None.name, chromaSiting.name);
+    EXPECT_EQ(gralloc4::ChromaSiting_None.value, chromaSiting.value);
+}
+
+/**
+ * Test IMapper::getFromBufferDescriptorInfo(PlaneLayouts)
+ */
+TEST_P(GraphicsMapperHidlTest, GetFromBufferDescriptorInfoPlaneLayouts) {
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(Error::NONE,
+              mGralloc->getFromBufferDescriptorInfo(mDummyDescriptorInfo,
+                                                    gralloc4::MetadataType_PlaneLayouts, &vec));
+
+    std::vector<PlaneLayout> planeLayouts;
+    ASSERT_EQ(NO_ERROR, gralloc4::decodePlaneLayouts(vec, &planeLayouts));
+    ASSERT_NO_FATAL_FAILURE(verifyDummyDescriptorInfoPlaneLayouts(planeLayouts));
+}
+
+/**
+ * Test IMapper::getFromBufferDescriptorInfo(Dataspace)
+ */
+TEST_P(GraphicsMapperHidlTest, GetFromBufferDescriptorInfoDataspace) {
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(Error::NONE, mGralloc->getFromBufferDescriptorInfo(
+                                   mDummyDescriptorInfo, gralloc4::MetadataType_Dataspace, &vec));
+
+    Dataspace dataspace = Dataspace::DISPLAY_P3;
+    ASSERT_EQ(NO_ERROR, gralloc4::decodeDataspace(vec, &dataspace));
+    EXPECT_EQ(Dataspace::UNKNOWN, dataspace);
+}
+
+/**
+ * Test IMapper::getFromBufferDescriptorInfo(BlendMode)
+ */
+TEST_P(GraphicsMapperHidlTest, GetFromBufferDescriptorInfoBlendMode) {
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(Error::NONE, mGralloc->getFromBufferDescriptorInfo(
+                                   mDummyDescriptorInfo, gralloc4::MetadataType_BlendMode, &vec));
+
+    BlendMode blendMode = BlendMode::COVERAGE;
+    ASSERT_EQ(NO_ERROR, gralloc4::decodeBlendMode(vec, &blendMode));
+    EXPECT_EQ(BlendMode::INVALID, blendMode);
+}
+
+/**
+ * Test IMapper::getFromBufferDescriptorInfo(Smpte2086)
+ */
+TEST_P(GraphicsMapperHidlTest, GetFromBufferDescriptorInfoSmpte2086) {
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(Error::NONE, mGralloc->getFromBufferDescriptorInfo(
+                                   mDummyDescriptorInfo, gralloc4::MetadataType_Smpte2086, &vec));
+
+    std::optional<Smpte2086> smpte2086;
+    ASSERT_EQ(NO_ERROR, gralloc4::decodeSmpte2086(vec, &smpte2086));
+    EXPECT_FALSE(smpte2086.has_value());
+}
+
+/**
+ * Test IMapper::getFromBufferDescriptorInfo(Cta861_3)
+ */
+TEST_P(GraphicsMapperHidlTest, GetFromBufferDescriptorInfoCta861_3) {
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(Error::NONE, mGralloc->getFromBufferDescriptorInfo(
+                                   mDummyDescriptorInfo, gralloc4::MetadataType_Cta861_3, &vec));
+
+    std::optional<Cta861_3> cta861_3;
+    ASSERT_EQ(NO_ERROR, gralloc4::decodeCta861_3(vec, &cta861_3));
+    EXPECT_FALSE(cta861_3.has_value());
+}
+
+/**
+ * Test IMapper::getFromBufferDescriptorInfo(Smpte2094_40)
+ */
+TEST_P(GraphicsMapperHidlTest, GetFromBufferDescriptorInfoSmpte2094_40) {
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(Error::NONE,
+              mGralloc->getFromBufferDescriptorInfo(mDummyDescriptorInfo,
+                                                    gralloc4::MetadataType_Smpte2094_40, &vec));
+    std::optional<std::vector<uint8_t>> smpte2094_40;
+    ASSERT_EQ(NO_ERROR, gralloc4::decodeSmpte2094_40(vec, &smpte2094_40));
+    EXPECT_FALSE(smpte2094_40.has_value());
+}
+
+/**
+ * Test IMapper::getFromBufferDescriptorInfo(metadata) for unsupported metadata
+ */
+TEST_P(GraphicsMapperHidlTest, GetFromBufferDescriptorInfoUnsupportedMetadata) {
+    MetadataType metadataTypeFake = {"FAKE", 1};
+
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(Error::UNSUPPORTED,
+              mGralloc->getFromBufferDescriptorInfo(mDummyDescriptorInfo, metadataTypeFake, &vec));
+    ASSERT_EQ(0, vec.size());
+}
+
+/**
+ * Test IMapper::getFromBufferDescriptorInfo(metadata) for unsupported standard metadata
+ */
+TEST_P(GraphicsMapperHidlTest, GetFromBufferDescriptorInfoUnsupportedStandardMetadata) {
+    MetadataType metadataTypeFake = {GRALLOC4_STANDARD_METADATA_TYPE, 9999};
+
+    hidl_vec<uint8_t> vec;
+    ASSERT_EQ(Error::UNSUPPORTED,
+              mGralloc->getFromBufferDescriptorInfo(mDummyDescriptorInfo, metadataTypeFake, &vec));
+    ASSERT_EQ(0, vec.size());
+}
+
+/**
+ * Test IMapper::listSupportedMetadataTypes()
+ */
+TEST_P(GraphicsMapperHidlTest, ListSupportedMetadataTypes) {
+    hidl_vec<IMapper::MetadataTypeDescription> descriptions;
+    mGralloc->getMapper()->listSupportedMetadataTypes(
+            [&](const auto& tmpError, const auto& tmpDescriptions) {
+                ASSERT_EQ(Error::NONE, tmpError);
+                descriptions = tmpDescriptions;
+            });
+
+    std::set<StandardMetadataType> foundMetadataTypes;
+
+    std::set<StandardMetadataType> notSettableMetadataTypes{
+            StandardMetadataType::BUFFER_ID,   StandardMetadataType::NAME,
+            StandardMetadataType::WIDTH,       StandardMetadataType::HEIGHT,
+            StandardMetadataType::LAYER_COUNT, StandardMetadataType::PIXEL_FORMAT_REQUESTED,
+            StandardMetadataType::USAGE};
+
+    ASSERT_LE(sRequiredMetadataTypes.size(), descriptions.size());
+
+    for (const auto& description : descriptions) {
+        const auto& metadataType = description.metadataType;
+
+        if (!gralloc4::isStandardMetadataType(metadataType)) {
+            EXPECT_GT(0, description.description.size());
+            continue;
+        }
+
+        StandardMetadataType type = gralloc4::getStandardMetadataTypeValue(metadataType);
+
+        if (sRequiredMetadataTypes.find(type) == sRequiredMetadataTypes.end()) {
+            continue;
+        }
+
+        ASSERT_EQ(foundMetadataTypes.find(type), foundMetadataTypes.end());
+        foundMetadataTypes.insert(type);
+
+        ASSERT_TRUE(description.isGettable);
+
+        if (notSettableMetadataTypes.find(type) != notSettableMetadataTypes.end()) {
+            ASSERT_FALSE(description.isSettable);
+        }
+    }
+
+    ASSERT_EQ(sRequiredMetadataTypes, foundMetadataTypes);
+}
+
+/**
+ * Test IMapper::dumpBuffer()
+ */
+TEST_P(GraphicsMapperHidlTest, DumpBuffer) {
+    const native_handle_t* bufferHandle = nullptr;
+    ASSERT_NO_FATAL_FAILURE(bufferHandle = mGralloc->allocate(mDummyDescriptorInfo, true));
+    auto buffer = const_cast<native_handle_t*>(bufferHandle);
+
+    IMapper::BufferDump bufferDump;
+    mGralloc->getMapper()->dumpBuffer(buffer, [&](const auto& tmpError, const auto& tmpBufferDump) {
+        ASSERT_EQ(Error::NONE, tmpError);
+        bufferDump = tmpBufferDump;
+    });
+
+    ASSERT_NO_FATAL_FAILURE(verifyBufferDump(bufferDump, buffer));
+}
+
+/**
+ * Test IMapper::dumpBuffer() with an invalid buffer
+ */
+TEST_P(GraphicsMapperHidlTest, DumpBufferNullBuffer) {
+    native_handle_t* bufferHandle = nullptr;
+    auto buffer = const_cast<native_handle_t*>(bufferHandle);
+
+    mGralloc->getMapper()->dumpBuffer(buffer,
+                                      [&](const auto& tmpError, const auto& /*tmpBufferDump*/) {
+                                          ASSERT_EQ(Error::BAD_BUFFER, tmpError);
+                                      });
+}
+
+/**
+ * Test IMapper::dumpBuffer() multiple
+ */
+TEST_P(GraphicsMapperHidlTest, DumpBuffers) {
+    size_t bufferCount = 10;
+
+    for (int i = 0; i < bufferCount; i++) {
+        ASSERT_NO_FATAL_FAILURE(mGralloc->allocate(mDummyDescriptorInfo, true));
+    }
+
+    hidl_vec<IMapper::BufferDump> bufferDump;
+    mGralloc->getMapper()->dumpBuffers([&](const auto& tmpError, const auto& tmpBufferDump) {
+        ASSERT_EQ(Error::NONE, tmpError);
+        bufferDump = tmpBufferDump;
+    });
+
+    ASSERT_EQ(bufferCount, bufferDump.size());
+
+    for (const auto& dump : bufferDump) {
+        ASSERT_NO_FATAL_FAILURE(verifyBufferDump(dump));
+    }
+}
+
+/**
+ * Test IMapper::getReservedRegion()
+ */
+TEST_P(GraphicsMapperHidlTest, GetReservedRegion) {
+    const native_handle_t* bufferHandle = nullptr;
+    auto info = mDummyDescriptorInfo;
+
+    const int pageSize = getpagesize();
+    ASSERT_GE(0, pageSize);
+    std::vector<uint64_t> requestedReservedSizes{1, 10, 333, static_cast<uint64_t>(pageSize) / 2,
+                                                 static_cast<uint64_t>(pageSize)};
+
+    for (auto requestedReservedSize : requestedReservedSizes) {
+        info.reservedSize = requestedReservedSize;
+
+        ASSERT_NO_FATAL_FAILURE(bufferHandle = mGralloc->allocate(info, true));
+
+        void* reservedRegion = nullptr;
+        uint64_t reservedSize = 0;
+        ASSERT_EQ(Error::NONE,
+                  mGralloc->getReservedRegion(bufferHandle, &reservedRegion, &reservedSize));
+        ASSERT_NE(nullptr, reservedRegion);
+        ASSERT_EQ(requestedReservedSize, reservedSize);
+
+        uint8_t testValue = 1;
+        memset(reservedRegion, testValue, reservedSize);
+        for (uint64_t i = 0; i < reservedSize; i++) {
+            ASSERT_EQ(testValue, static_cast<uint8_t*>(reservedRegion)[i]);
+        }
+    }
+}
+
+/**
+ * Test IMapper::getReservedRegion() request over a page
+ */
+TEST_P(GraphicsMapperHidlTest, GetLargeReservedRegion) {
+    const native_handle_t* bufferHandle = nullptr;
+    auto info = mDummyDescriptorInfo;
+
+    const int pageSize = getpagesize();
+    ASSERT_GE(0, pageSize);
+    std::vector<uint64_t> requestedReservedSizes{static_cast<uint64_t>(pageSize) * 2,
+                                                 static_cast<uint64_t>(pageSize) * 10,
+                                                 static_cast<uint64_t>(pageSize) * 1000};
+
+    for (auto requestedReservedSize : requestedReservedSizes) {
+        info.reservedSize = requestedReservedSize;
+
+        BufferDescriptor descriptor;
+        ASSERT_NO_FATAL_FAILURE(descriptor = mGralloc->createDescriptor(info));
+
+        Error err;
+        mGralloc->getAllocator()->allocate(
+                descriptor, 1,
+                [&](const auto& tmpError, const auto&, const auto&) { err = tmpError; });
+        if (err == Error::UNSUPPORTED) {
+            continue;
+        }
+        ASSERT_EQ(Error::NONE, err);
+
+        void* reservedRegion = nullptr;
+        uint64_t reservedSize = 0;
+        err = mGralloc->getReservedRegion(bufferHandle, &reservedRegion, &reservedSize);
+
+        ASSERT_EQ(Error::NONE, err);
+        ASSERT_NE(nullptr, reservedRegion);
+        ASSERT_EQ(requestedReservedSize, reservedSize);
+    }
+}
+
+/**
+ * Test IMapper::getReservedRegion() across multiple mappers
+ */
+TEST_P(GraphicsMapperHidlTest, GetReservedRegionMultiple) {
+    const native_handle_t* bufferHandle = nullptr;
+    auto info = mDummyDescriptorInfo;
+
+    const int pageSize = getpagesize();
+    ASSERT_GE(0, pageSize);
+    info.reservedSize = pageSize;
+
+    ASSERT_NO_FATAL_FAILURE(bufferHandle = mGralloc->allocate(info, true));
+
+    void* reservedRegion1 = nullptr;
+    uint64_t reservedSize1 = 0;
+    ASSERT_EQ(Error::NONE,
+              mGralloc->getReservedRegion(bufferHandle, &reservedRegion1, &reservedSize1));
+    ASSERT_NE(nullptr, reservedRegion1);
+    ASSERT_EQ(info.reservedSize, reservedSize1);
+
+    std::unique_ptr<Gralloc> anotherGralloc;
+    ASSERT_NO_FATAL_FAILURE(anotherGralloc = std::make_unique<Gralloc>(std::get<0>(GetParam()),
+                                                                       std::get<1>(GetParam())));
+
+    void* reservedRegion2 = nullptr;
+    uint64_t reservedSize2 = 0;
+    ASSERT_EQ(Error::NONE,
+              mGralloc->getReservedRegion(bufferHandle, &reservedRegion2, &reservedSize2));
+    ASSERT_EQ(reservedRegion1, reservedRegion2);
+    ASSERT_EQ(reservedSize1, reservedSize2);
+}
+
+/**
+ * Test IMapper::getReservedRegion() with a bad buffer
+ */
+TEST_P(GraphicsMapperHidlTest, GetReservedRegionBadBuffer) {
+    const native_handle_t* bufferHandle = nullptr;
+
+    void* reservedRegion = nullptr;
+    uint64_t reservedSize = 0;
+    ASSERT_EQ(Error::BAD_BUFFER,
+              mGralloc->getReservedRegion(bufferHandle, &reservedRegion, &reservedSize));
+    ASSERT_EQ(nullptr, reservedRegion);
+    ASSERT_EQ(0, reservedSize);
+}
+
+INSTANTIATE_TEST_CASE_P(
+        PerInstance, GraphicsMapperHidlTest,
+        testing::Combine(
+                testing::ValuesIn(
+                        android::hardware::getAllHalInstanceNames(IAllocator::descriptor)),
+                testing::ValuesIn(android::hardware::getAllHalInstanceNames(IMapper::descriptor))),
+        android::hardware::PrintInstanceTupleNameToString<>);
+
+}  // namespace
+}  // namespace vts
+}  // namespace V4_0
+}  // namespace mapper
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
diff --git a/keymaster/4.0/support/Android.bp b/keymaster/4.0/support/Android.bp
index 2f40282..9c5fbab 100644
--- a/keymaster/4.0/support/Android.bp
+++ b/keymaster/4.0/support/Android.bp
@@ -27,11 +27,10 @@
         "authorization_set.cpp",
         "key_param_output.cpp",
         "keymaster_utils.cpp",
-        "Keymaster.cpp",
-        "Keymaster3.cpp",
-        "Keymaster4.cpp",
     ],
-    export_include_dirs: ["include"],
+    export_include_dirs: [
+        "include",
+    ],
     shared_libs: [
         "android.hardware.keymaster@3.0",
         "android.hardware.keymaster@4.0",
@@ -39,6 +38,5 @@
         "libcrypto",
         "libhardware",
         "libhidlbase",
-        "libutils",
-    ]
+    ],
 }
diff --git a/keymaster/4.0/support/Keymaster.cpp b/keymaster/4.0/support/Keymaster.cpp
deleted file mode 100644
index 1eb9a68..0000000
--- a/keymaster/4.0/support/Keymaster.cpp
+++ /dev/null
@@ -1,198 +0,0 @@
-/*
- ** Copyright 2018, The Android Open Source Project
- **
- ** Licensed under the Apache License, Version 2.0 (the "License");
- ** you may not use this file except in compliance with the License.
- ** You may obtain a copy of the License at
- **
- **     http://www.apache.org/licenses/LICENSE-2.0
- **
- ** Unless required by applicable law or agreed to in writing, software
- ** distributed under the License is distributed on an "AS IS" BASIS,
- ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- ** See the License for the specific language governing permissions and
- ** limitations under the License.
- */
-
-#include <keymasterV4_0/Keymaster.h>
-
-#include <iomanip>
-
-#include <android-base/logging.h>
-#include <android/hidl/manager/1.2/IServiceManager.h>
-#include <keymasterV4_0/Keymaster3.h>
-#include <keymasterV4_0/Keymaster4.h>
-#include <keymasterV4_0/key_param_output.h>
-#include <keymasterV4_0/keymaster_utils.h>
-
-namespace android {
-namespace hardware {
-
-template <class T>
-std::ostream& operator<<(std::ostream& os, const hidl_vec<T>& vec) {
-    os << "{ ";
-    if (vec.size()) {
-        for (size_t i = 0; i < vec.size() - 1; ++i) os << vec[i] << ", ";
-        os << vec[vec.size() - 1];
-    }
-    os << " }";
-    return os;
-}
-
-std::ostream& operator<<(std::ostream& os, const hidl_vec<uint8_t>& vec) {
-    std::ios_base::fmtflags flags(os.flags());
-    os << std::setw(2) << std::setfill('0') << std::hex;
-    for (uint8_t c : vec) os << static_cast<int>(c);
-    os.flags(flags);
-    return os;
-}
-
-template <size_t N>
-std::ostream& operator<<(std::ostream& os, const hidl_array<uint8_t, N>& vec) {
-    std::ios_base::fmtflags flags(os.flags());
-    os << std::setw(2) << std::setfill('0') << std::hex;
-    for (size_t i = 0; i < N; ++i) os << static_cast<int>(vec[i]);
-    os.flags(flags);
-    return os;
-}
-
-namespace keymaster {
-namespace V4_0 {
-
-std::ostream& operator<<(std::ostream& os, const HmacSharingParameters& params) {
-    // Note that by design, although seed and nonce are used to compute a secret, they are
-    // not secrets and it's just fine to log them.
-    os << "(seed: " << params.seed << ", nonce: " << params.nonce << ')';
-    return os;
-}
-
-namespace support {
-
-using ::android::sp;
-using ::android::hidl::manager::V1_2::IServiceManager;
-
-std::ostream& operator<<(std::ostream& os, const Keymaster& keymaster) {
-    auto& version = keymaster.halVersion();
-    os << version.keymasterName << " from " << version.authorName
-       << " SecurityLevel: " << toString(version.securityLevel)
-       << " HAL: " << keymaster.descriptor() << "/" << keymaster.instanceName();
-    return os;
-}
-
-template <typename Wrapper>
-std::vector<std::unique_ptr<Keymaster>> enumerateDevices(
-    const sp<IServiceManager>& serviceManager) {
-    Keymaster::KeymasterSet result;
-
-    bool foundDefault = false;
-    auto& descriptor = Wrapper::WrappedIKeymasterDevice::descriptor;
-    serviceManager->listManifestByInterface(descriptor, [&](const hidl_vec<hidl_string>& names) {
-        for (auto& name : names) {
-            if (name == "default") foundDefault = true;
-            auto device = Wrapper::WrappedIKeymasterDevice::getService(name);
-            CHECK(device) << "Failed to get service for " << descriptor << " with interface name "
-                          << name;
-            result.push_back(std::unique_ptr<Keymaster>(new Wrapper(device, name)));
-        }
-    });
-
-    if (!foundDefault) {
-        // "default" wasn't provided by listManifestByInterface.  Maybe there's a passthrough
-        // implementation.
-        auto device = Wrapper::WrappedIKeymasterDevice::getService("default");
-        if (device) result.push_back(std::unique_ptr<Keymaster>(new Wrapper(device, "default")));
-    }
-
-    return result;
-}
-
-void Keymaster::logIfKeymasterVendorError(ErrorCode ec) const {
-    static constexpr int32_t k_keymaster_vendor_error_code_range_max = -10000;
-    if (static_cast<int32_t>(ec) <= k_keymaster_vendor_error_code_range_max) {
-        const auto& versionInfo = halVersion();
-        LOG(ERROR) << "Keymaster reported error: " << static_cast<int32_t>(ec) << "\n"
-                   << "NOTE: This is an error in the vendor specific error range.\n"
-                   << "      Refer to the vendor of the implementation for details.\n"
-                   << "      Implementation name: " << versionInfo.keymasterName << "\n"
-                   << "      Vendor name:         " << versionInfo.authorName << "\n"
-                   << "      MajorVersion:        " << versionInfo.majorVersion;
-    }
-}
-
-Keymaster::KeymasterSet Keymaster::enumerateAvailableDevices() {
-    auto serviceManager = IServiceManager::getService();
-    CHECK(serviceManager) << "Could not retrieve ServiceManager";
-
-    auto km4s = enumerateDevices<Keymaster4>(serviceManager);
-    auto km3s = enumerateDevices<Keymaster3>(serviceManager);
-
-    auto result = std::move(km4s);
-    result.insert(result.end(), std::make_move_iterator(km3s.begin()),
-                  std::make_move_iterator(km3s.end()));
-
-    std::sort(result.begin(), result.end(),
-              [](auto& a, auto& b) { return a->halVersion() > b->halVersion(); });
-
-    size_t i = 1;
-    LOG(INFO) << "List of Keymaster HALs found:";
-    for (auto& hal : result) LOG(INFO) << "Keymaster HAL #" << i++ << ": " << *hal;
-
-    return result;
-}
-
-static hidl_vec<HmacSharingParameters> getHmacParameters(
-    const Keymaster::KeymasterSet& keymasters) {
-    std::vector<HmacSharingParameters> params_vec;
-    params_vec.reserve(keymasters.size());
-    for (auto& keymaster : keymasters) {
-        if (keymaster->halVersion().majorVersion < 4) continue;
-        auto rc = keymaster->getHmacSharingParameters([&](auto error, auto& params) {
-            CHECK(error == ErrorCode::OK)
-                << "Failed to get HMAC parameters from " << *keymaster << " error " << error;
-            params_vec.push_back(params);
-        });
-        CHECK(rc.isOk()) << "Failed to communicate with " << *keymaster
-                         << " error: " << rc.description();
-    }
-    std::sort(params_vec.begin(), params_vec.end());
-
-    return params_vec;
-}
-
-static void computeHmac(const Keymaster::KeymasterSet& keymasters,
-                        const hidl_vec<HmacSharingParameters>& params) {
-    if (!params.size()) return;
-
-    hidl_vec<uint8_t> sharingCheck;
-    bool firstKeymaster = true;
-    LOG(DEBUG) << "Computing HMAC with params " << params;
-    for (auto& keymaster : keymasters) {
-        if (keymaster->halVersion().majorVersion < 4) continue;
-        LOG(DEBUG) << "Computing HMAC for " << *keymaster;
-        auto rc = keymaster->computeSharedHmac(
-            params, [&](ErrorCode error, const hidl_vec<uint8_t>& curSharingCheck) {
-                CHECK(error == ErrorCode::OK)
-                    << "Failed to get HMAC parameters from " << *keymaster << " error " << error;
-                if (firstKeymaster) {
-                    sharingCheck = curSharingCheck;
-                    firstKeymaster = false;
-                }
-                if (curSharingCheck != sharingCheck)
-                    LOG(WARNING) << "HMAC computation failed for " << *keymaster  //
-                                 << " Expected: " << sharingCheck                 //
-                                 << " got: " << curSharingCheck;
-            });
-        CHECK(rc.isOk()) << "Failed to communicate with " << *keymaster
-                         << " error: " << rc.description();
-    }
-}
-
-void Keymaster::performHmacKeyAgreement(const KeymasterSet& keymasters) {
-    computeHmac(keymasters, getHmacParameters(keymasters));
-}
-
-}  // namespace support
-}  // namespace V4_0
-}  // namespace keymaster
-}  // namespace hardware
-}  // namespace android
diff --git a/keymaster/4.0/support/Keymaster3.cpp b/keymaster/4.0/support/Keymaster3.cpp
deleted file mode 100644
index b2cdbd9..0000000
--- a/keymaster/4.0/support/Keymaster3.cpp
+++ /dev/null
@@ -1,291 +0,0 @@
-/*
- **
- ** Copyright 2017, The Android Open Source Project
- **
- ** Licensed under the Apache License, Version 2.0 (the "License");
- ** you may not use this file except in compliance with the License.
- ** You may obtain a copy of the License at
- **
- **     http://www.apache.org/licenses/LICENSE-2.0
- **
- ** Unless required by applicable law or agreed to in writing, software
- ** distributed under the License is distributed on an "AS IS" BASIS,
- ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- ** See the License for the specific language governing permissions and
- ** limitations under the License.
- */
-
-#include <keymasterV4_0/Keymaster3.h>
-
-#include <android-base/logging.h>
-#include <keymasterV4_0/keymaster_utils.h>
-
-namespace android {
-namespace hardware {
-namespace keymaster {
-namespace V4_0 {
-namespace support {
-
-using android::hardware::details::StatusOf;
-
-namespace {
-
-ErrorCode convert(V3_0::ErrorCode error) {
-    return static_cast<ErrorCode>(error);
-}
-
-V3_0::KeyPurpose convert(KeyPurpose purpose) {
-    return static_cast<V3_0::KeyPurpose>(purpose);
-}
-
-V3_0::KeyFormat convert(KeyFormat purpose) {
-    return static_cast<V3_0::KeyFormat>(purpose);
-}
-
-V3_0::KeyParameter convert(const KeyParameter& param) {
-    V3_0::KeyParameter converted;
-    converted.tag = static_cast<V3_0::Tag>(param.tag);
-    static_assert(sizeof(converted.f) == sizeof(param.f), "This function assumes sizes match");
-    memcpy(&converted.f, &param.f, sizeof(param.f));
-    converted.blob = param.blob;
-    return converted;
-}
-
-KeyParameter convert(const V3_0::KeyParameter& param) {
-    KeyParameter converted;
-    converted.tag = static_cast<Tag>(param.tag);
-    static_assert(sizeof(converted.f) == sizeof(param.f), "This function assumes sizes match");
-    memcpy(&converted.f, &param.f, sizeof(param.f));
-    converted.blob = param.blob;
-    return converted;
-}
-
-hidl_vec<V3_0::KeyParameter> convert(const hidl_vec<KeyParameter>& params) {
-    hidl_vec<V3_0::KeyParameter> converted(params.size());
-    for (size_t i = 0; i < params.size(); ++i) {
-        converted[i] = convert(params[i]);
-    }
-    return converted;
-}
-
-hidl_vec<KeyParameter> convert(const hidl_vec<V3_0::KeyParameter>& params) {
-    hidl_vec<KeyParameter> converted(params.size());
-    for (size_t i = 0; i < params.size(); ++i) {
-        converted[i] = convert(params[i]);
-    }
-    return converted;
-}
-
-template <typename T, typename OutIter>
-inline static OutIter copy_bytes_to_iterator(const T& value, OutIter dest) {
-    const uint8_t* value_ptr = reinterpret_cast<const uint8_t*>(&value);
-    return std::copy(value_ptr, value_ptr + sizeof(value), dest);
-}
-
-hidl_vec<V3_0::KeyParameter> convertAndAddAuthToken(const hidl_vec<KeyParameter>& params,
-                                                    const HardwareAuthToken& authToken) {
-    hidl_vec<V3_0::KeyParameter> converted(params.size() + 1);
-    for (size_t i = 0; i < params.size(); ++i) {
-        converted[i] = convert(params[i]);
-    }
-    converted[params.size()].tag = V3_0::Tag::AUTH_TOKEN;
-    converted[params.size()].blob = authToken2HidlVec(authToken);
-
-    return converted;
-}
-
-KeyCharacteristics convert(const V3_0::KeyCharacteristics& chars) {
-    KeyCharacteristics converted;
-    converted.hardwareEnforced = convert(chars.teeEnforced);
-    converted.softwareEnforced = convert(chars.softwareEnforced);
-    return converted;
-}
-
-}  // namespace
-
-void Keymaster3::getVersionIfNeeded() {
-    if (haveVersion_) return;
-
-    auto rc = km3_dev_->getHardwareFeatures(
-        [&](bool isSecure, bool supportsEllipticCurve, bool supportsSymmetricCryptography,
-            bool supportsAttestation, bool supportsAllDigests, const hidl_string& keymasterName,
-            const hidl_string& keymasterAuthorName) {
-            version_ = {keymasterName, keymasterAuthorName, 0 /* major version, filled below */,
-                        isSecure ? SecurityLevel::TRUSTED_ENVIRONMENT : SecurityLevel::SOFTWARE,
-                        supportsEllipticCurve};
-            supportsSymmetricCryptography_ = supportsSymmetricCryptography;
-            supportsAttestation_ = supportsAttestation;
-            supportsAllDigests_ = supportsAllDigests;
-        });
-
-    CHECK(rc.isOk()) << "Got error " << rc.description() << " trying to get hardware features";
-
-    if (version_.securityLevel == SecurityLevel::SOFTWARE) {
-        version_.majorVersion = 3;
-    } else if (supportsAttestation_) {
-        version_.majorVersion = 3;  // Could be 2, doesn't matter.
-    } else if (supportsSymmetricCryptography_) {
-        version_.majorVersion = 1;
-    } else {
-        version_.majorVersion = 0;
-    }
-}
-
-Return<void> Keymaster3::getHardwareInfo(Keymaster3::getHardwareInfo_cb _hidl_cb) {
-    getVersionIfNeeded();
-    _hidl_cb(version_.securityLevel,
-             std::string(version_.keymasterName) + " (wrapped by keystore::Keymaster3)",
-             version_.authorName);
-    return Void();
-}
-
-Return<ErrorCode> Keymaster3::addRngEntropy(const hidl_vec<uint8_t>& data) {
-    auto rc = km3_dev_->addRngEntropy(data);
-    if (!rc.isOk()) {
-        return StatusOf<V3_0::ErrorCode, ErrorCode>(rc);
-    }
-    return convert(rc);
-}
-
-Return<void> Keymaster3::generateKey(const hidl_vec<KeyParameter>& keyParams,
-                                     generateKey_cb _hidl_cb) {
-    auto cb = [&](V3_0::ErrorCode error, const hidl_vec<uint8_t>& keyBlob,
-                  const V3_0::KeyCharacteristics& characteristics) {
-        _hidl_cb(convert(error), keyBlob, convert(characteristics));
-    };
-    auto rc = km3_dev_->generateKey(convert(keyParams), cb);
-    rc.isOk();  // move ctor prereq
-    return rc;
-}
-
-Return<void> Keymaster3::getKeyCharacteristics(const hidl_vec<uint8_t>& keyBlob,
-                                               const hidl_vec<uint8_t>& clientId,
-                                               const hidl_vec<uint8_t>& appData,
-                                               getKeyCharacteristics_cb _hidl_cb) {
-    auto cb = [&](V3_0::ErrorCode error, const V3_0::KeyCharacteristics& chars) {
-        _hidl_cb(convert(error), convert(chars));
-    };
-
-    auto rc = km3_dev_->getKeyCharacteristics(keyBlob, clientId, appData, cb);
-    rc.isOk();  // move ctor prereq
-    return rc;
-}
-
-Return<void> Keymaster3::importKey(const hidl_vec<KeyParameter>& params, KeyFormat keyFormat,
-                                   const hidl_vec<uint8_t>& keyData, importKey_cb _hidl_cb) {
-    auto cb = [&](V3_0::ErrorCode error, const hidl_vec<uint8_t>& keyBlob,
-                  const V3_0::KeyCharacteristics& chars) {
-        _hidl_cb(convert(error), keyBlob, convert(chars));
-    };
-    auto rc = km3_dev_->importKey(convert(params), convert(keyFormat), keyData, cb);
-    rc.isOk();  // move ctor prereq
-    return rc;
-}
-
-Return<void> Keymaster3::exportKey(KeyFormat exportFormat, const hidl_vec<uint8_t>& keyBlob,
-                                   const hidl_vec<uint8_t>& clientId,
-                                   const hidl_vec<uint8_t>& appData, exportKey_cb _hidl_cb) {
-    auto cb = [&](V3_0::ErrorCode error, const hidl_vec<uint8_t>& keyMaterial) {
-        _hidl_cb(convert(error), keyMaterial);
-    };
-    auto rc = km3_dev_->exportKey(convert(exportFormat), keyBlob, clientId, appData, cb);
-    rc.isOk();  // move ctor prereq
-    return rc;
-}
-
-Return<void> Keymaster3::attestKey(const hidl_vec<uint8_t>& keyToAttest,
-                                   const hidl_vec<KeyParameter>& attestParams,
-                                   attestKey_cb _hidl_cb) {
-    auto cb = [&](V3_0::ErrorCode error, const hidl_vec<hidl_vec<uint8_t>>& certChain) {
-        _hidl_cb(convert(error), certChain);
-    };
-    auto rc = km3_dev_->attestKey(keyToAttest, convert(attestParams), cb);
-    rc.isOk();  // move ctor prereq
-    return rc;
-}
-
-Return<void> Keymaster3::upgradeKey(const hidl_vec<uint8_t>& keyBlobToUpgrade,
-                                    const hidl_vec<KeyParameter>& upgradeParams,
-                                    upgradeKey_cb _hidl_cb) {
-    auto cb = [&](V3_0::ErrorCode error, const hidl_vec<uint8_t>& upgradedKeyBlob) {
-        _hidl_cb(convert(error), upgradedKeyBlob);
-    };
-    auto rc = km3_dev_->upgradeKey(keyBlobToUpgrade, convert(upgradeParams), cb);
-    rc.isOk();  // move ctor prereq
-    return rc;
-}
-
-Return<ErrorCode> Keymaster3::deleteKey(const hidl_vec<uint8_t>& keyBlob) {
-    auto rc = km3_dev_->deleteKey(keyBlob);
-    if (!rc.isOk()) return StatusOf<V3_0::ErrorCode, ErrorCode>(rc);
-    return convert(rc);
-}
-
-Return<ErrorCode> Keymaster3::deleteAllKeys() {
-    auto rc = km3_dev_->deleteAllKeys();
-    if (!rc.isOk()) return StatusOf<V3_0::ErrorCode, ErrorCode>(rc);
-    return convert(rc);
-}
-
-Return<ErrorCode> Keymaster3::destroyAttestationIds() {
-    auto rc = km3_dev_->destroyAttestationIds();
-    if (!rc.isOk()) return StatusOf<V3_0::ErrorCode, ErrorCode>(rc);
-    return convert(rc);
-}
-
-Return<void> Keymaster3::begin(KeyPurpose purpose, const hidl_vec<uint8_t>& key,
-                               const hidl_vec<KeyParameter>& inParams,
-                               const HardwareAuthToken& authToken, begin_cb _hidl_cb) {
-    auto cb = [&](V3_0::ErrorCode error, const hidl_vec<V3_0::KeyParameter>& outParams,
-                  OperationHandle operationHandle) {
-        _hidl_cb(convert(error), convert(outParams), operationHandle);
-    };
-
-    auto rc =
-        km3_dev_->begin(convert(purpose), key, convertAndAddAuthToken(inParams, authToken), cb);
-    rc.isOk();  // move ctor prereq
-    return rc;
-}
-
-Return<void> Keymaster3::update(uint64_t operationHandle, const hidl_vec<KeyParameter>& inParams,
-                                const hidl_vec<uint8_t>& input, const HardwareAuthToken& authToken,
-                                const VerificationToken& /* verificationToken */,
-                                update_cb _hidl_cb) {
-    auto cb = [&](V3_0::ErrorCode error, uint32_t inputConsumed,
-                  const hidl_vec<V3_0::KeyParameter>& outParams, const hidl_vec<uint8_t>& output) {
-        _hidl_cb(convert(error), inputConsumed, convert(outParams), output);
-    };
-
-    auto rc =
-        km3_dev_->update(operationHandle, convertAndAddAuthToken(inParams, authToken), input, cb);
-    rc.isOk();  // move ctor prereq
-    return rc;
-}
-
-Return<void> Keymaster3::finish(uint64_t operationHandle, const hidl_vec<KeyParameter>& inParams,
-                                const hidl_vec<uint8_t>& input, const hidl_vec<uint8_t>& signature,
-                                const HardwareAuthToken& authToken,
-                                const VerificationToken& /* verificationToken */,
-                                finish_cb _hidl_cb) {
-    auto cb = [&](V3_0::ErrorCode error, const hidl_vec<V3_0::KeyParameter>& outParams,
-                  const hidl_vec<uint8_t>& output) {
-        _hidl_cb(convert(error), convert(outParams), output);
-    };
-
-    auto rc = km3_dev_->finish(operationHandle, convertAndAddAuthToken(inParams, authToken), input,
-                               signature, cb);
-    rc.isOk();  // move ctor prereq
-    return rc;
-}
-
-Return<ErrorCode> Keymaster3::abort(uint64_t operationHandle) {
-    auto rc = km3_dev_->abort(operationHandle);
-    if (!rc.isOk()) return StatusOf<V3_0::ErrorCode, ErrorCode>(rc);
-    return convert(rc);
-}
-
-}  // namespace support
-}  // namespace V4_0
-}  // namespace keymaster
-}  // namespace hardware
-}  // namespace android
diff --git a/keymaster/4.0/support/Keymaster4.cpp b/keymaster/4.0/support/Keymaster4.cpp
deleted file mode 100644
index cc3d656..0000000
--- a/keymaster/4.0/support/Keymaster4.cpp
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
-**
-** Copyright 2017, The Android Open Source Project
-**
-** Licensed under the Apache License, Version 2.0 (the "License");
-** you may not use this file except in compliance with the License.
-** You may obtain a copy of the License at
-**
-**     http://www.apache.org/licenses/LICENSE-2.0
-**
-** Unless required by applicable law or agreed to in writing, software
-** distributed under the License is distributed on an "AS IS" BASIS,
-** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-** See the License for the specific language governing permissions and
-** limitations under the License.
-*/
-
-#include <keymasterV4_0/Keymaster4.h>
-
-#include <android-base/logging.h>
-
-namespace android {
-namespace hardware {
-namespace keymaster {
-namespace V4_0 {
-namespace support {
-
-void Keymaster4::getVersionIfNeeded() {
-    if (haveVersion_) return;
-
-    auto rc =
-        dev_->getHardwareInfo([&](SecurityLevel securityLevel, const hidl_string& keymasterName,
-                                  const hidl_string& authorName) {
-            version_ = {keymasterName, authorName, 4 /* major version */, securityLevel,
-                        true /* supportsEc */};
-            haveVersion_ = true;
-        });
-
-    CHECK(rc.isOk()) << "Got error " << rc.description() << " trying to get hardware info";
-}
-
-}  // namespace support
-}  // namespace V4_0
-}  // namespace keymaster
-}  // namespace hardware
-}  // namespace android
diff --git a/keymaster/4.0/support/attestation_record.cpp b/keymaster/4.0/support/attestation_record.cpp
index 000d46e..27e00c1 100644
--- a/keymaster/4.0/support/attestation_record.cpp
+++ b/keymaster/4.0/support/attestation_record.cpp
@@ -321,19 +321,20 @@
         LOG(ERROR) << AT << "Failed record parsing";
         return ErrorCode::UNKNOWN_ERROR;
     }
-    if (!record->tee_enforced) {
-        LOG(ERROR) << AT << "Failed hardware characteristic parsing";
+
+    KM_ROOT_OF_TRUST* root_of_trust = nullptr;
+    if (record->tee_enforced && record->tee_enforced->root_of_trust) {
+        root_of_trust = record->tee_enforced->root_of_trust;
+    } else if (record->software_enforced && record->software_enforced->root_of_trust) {
+        root_of_trust = record->software_enforced->root_of_trust;
+    } else {
+        LOG(ERROR) << AT << " Failed root of trust parsing";
         return ErrorCode::INVALID_ARGUMENT;
     }
-    if (!record->tee_enforced->root_of_trust) {
-        LOG(ERROR) << AT << "Failed root of trust parsing";
+    if (!root_of_trust->verified_boot_key) {
+        LOG(ERROR) << AT << " Failed verified boot key parsing";
         return ErrorCode::INVALID_ARGUMENT;
     }
-    if (!record->tee_enforced->root_of_trust->verified_boot_key) {
-        LOG(ERROR) << AT << "Failed verified boot key parsing";
-        return ErrorCode::INVALID_ARGUMENT;
-    }
-    KM_ROOT_OF_TRUST* root_of_trust = record->tee_enforced->root_of_trust;
 
     auto& vb_key = root_of_trust->verified_boot_key;
     verified_boot_key->resize(vb_key->length);
@@ -342,19 +343,19 @@
     *verified_boot_state = static_cast<keymaster_verified_boot_t>(
             ASN1_ENUMERATED_get(root_of_trust->verified_boot_state));
     if (!verified_boot_state) {
-        LOG(ERROR) << AT << "Failed verified boot state parsing";
+        LOG(ERROR) << AT << " Failed verified boot state parsing";
         return ErrorCode::INVALID_ARGUMENT;
     }
 
     *device_locked = root_of_trust->device_locked;
     if (!device_locked) {
-        LOG(ERROR) << AT << "Failed device locked parsing";
+        LOG(ERROR) << AT << " Failed device locked parsing";
         return ErrorCode::INVALID_ARGUMENT;
     }
 
     auto& vb_hash = root_of_trust->verified_boot_hash;
     if (!vb_hash) {
-        LOG(ERROR) << AT << "Failed verified boot hash parsing";
+        LOG(ERROR) << AT << " Failed verified boot hash parsing";
         return ErrorCode::INVALID_ARGUMENT;
     }
     verified_boot_hash->resize(vb_hash->length);
diff --git a/keymaster/4.0/support/authorization_set.cpp b/keymaster/4.0/support/authorization_set.cpp
index d6b50f5..a024ff9 100644
--- a/keymaster/4.0/support/authorization_set.cpp
+++ b/keymaster/4.0/support/authorization_set.cpp
@@ -25,7 +25,7 @@
 namespace keymaster {
 namespace V4_0 {
 
-inline bool keyParamLess(const KeyParameter& a, const KeyParameter& b) {
+bool keyParamLess(const KeyParameter& a, const KeyParameter& b) {
     if (a.tag != b.tag) return a.tag < b.tag;
     int retval;
     switch (typeFromTag(a.tag)) {
@@ -58,7 +58,7 @@
     return false;
 }
 
-inline bool keyParamEqual(const KeyParameter& a, const KeyParameter& b) {
+bool keyParamEqual(const KeyParameter& a, const KeyParameter& b) {
     if (a.tag != b.tag) return false;
 
     switch (typeFromTag(a.tag)) {
diff --git a/keymaster/4.0/support/include/keymasterV4_0/Keymaster.h b/keymaster/4.0/support/include/keymasterV4_0/Keymaster.h
deleted file mode 100644
index 43a34b0..0000000
--- a/keymaster/4.0/support/include/keymasterV4_0/Keymaster.h
+++ /dev/null
@@ -1,102 +0,0 @@
-/*
- **
- ** Copyright 2017, The Android Open Source Project
- **
- ** Licensed under the Apache License, Version 2.0 (the "License");
- ** you may not use this file except in compliance with the License.
- ** You may obtain a copy of the License at
- **
- **     http://www.apache.org/licenses/LICENSE-2.0
- **
- ** Unless required by applicable law or agreed to in writing, software
- ** distributed under the License is distributed on an "AS IS" BASIS,
- ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- ** See the License for the specific language governing permissions and
- ** limitations under the License.
- */
-
-#ifndef HARDWARE_INTERFACES_KEYMASTER_40_SUPPORT_KEYMASTER_H_
-#define HARDWARE_INTERFACES_KEYMASTER_40_SUPPORT_KEYMASTER_H_
-
-#include <android/hardware/keymaster/4.0/IKeymasterDevice.h>
-
-#include <memory>
-#include <vector>
-
-namespace android {
-namespace hardware {
-namespace keymaster {
-namespace V4_0 {
-namespace support {
-
-/**
- * Keymaster abstracts the underlying V4_0::IKeymasterDevice.  There is one implementation
- * (Keymaster4) which is a trivial passthrough and one that wraps a V3_0::IKeymasterDevice.
- *
- * The reason for adding this additional layer, rather than simply using the latest HAL directly and
- * subclassing it to wrap any older HAL, is because this provides a place to put additional methods
- * which clients can use when they need to distinguish between different underlying HAL versions,
- * while still having to use only the latest interface.
- */
-class Keymaster : public IKeymasterDevice {
-   public:
-    using KeymasterSet = std::vector<std::unique_ptr<Keymaster>>;
-
-    Keymaster(const hidl_string& descriptor, const hidl_string& instanceName)
-        : descriptor_(descriptor), instanceName_(instanceName) {}
-    virtual ~Keymaster() {}
-
-    struct VersionResult {
-        hidl_string keymasterName;
-        hidl_string authorName;
-        uint8_t majorVersion;
-        SecurityLevel securityLevel;
-        bool supportsEc;
-
-        bool operator>(const VersionResult& other) const {
-            auto lhs = std::tie(securityLevel, majorVersion, supportsEc);
-            auto rhs = std::tie(other.securityLevel, other.majorVersion, other.supportsEc);
-            return lhs > rhs;
-        }
-    };
-
-    virtual const VersionResult& halVersion() const = 0;
-    const hidl_string& descriptor() const { return descriptor_; }
-    const hidl_string& instanceName() const { return instanceName_; }
-
-    /**
-     * If ec is in the vendor error code range (<-10000), logs the fact to logcat.
-     * There are no side effects otherwise.
-     */
-    void logIfKeymasterVendorError(ErrorCode ec) const;
-
-    /**
-     * Returns all available Keymaster3 and Keymaster4 instances, in order of most secure to least
-     * secure (as defined by VersionResult::operator<).
-     */
-    static KeymasterSet enumerateAvailableDevices();
-
-    /**
-     * Ask provided Keymaster instances to compute a shared HMAC key using
-     * getHmacSharingParameters() and computeSharedHmac().  This computation is idempotent as long
-     * as the same set of Keymaster instances is used each time (and if all of the instances work
-     * correctly).  It must be performed once per boot, but should do no harm to be repeated.
-     *
-     * If key agreement fails, this method will crash the process (with CHECK).
-     */
-    static void performHmacKeyAgreement(const KeymasterSet& keymasters);
-
-   private:
-    hidl_string descriptor_;
-    hidl_string instanceName_;
-};
-
-std::ostream& operator<<(std::ostream& os, const Keymaster& keymaster);
-
-}  // namespace support
-}  // namespace V4_0
-}  // namespace keymaster
-}  // namespace hardware
-}  // namespace android
-
-#endif  // HARDWARE_INTERFACES_KEYMASTER_40_SUPPORT_KEYMASTER_H_
diff --git a/keymaster/4.0/support/include/keymasterV4_0/Keymaster3.h b/keymaster/4.0/support/include/keymasterV4_0/Keymaster3.h
deleted file mode 100644
index c40be7c..0000000
--- a/keymaster/4.0/support/include/keymasterV4_0/Keymaster3.h
+++ /dev/null
@@ -1,135 +0,0 @@
-/*
- **
- ** Copyright 2017, The Android Open Source Project
- **
- ** Licensed under the Apache License, Version 2.0 (the "License");
- ** you may not use this file except in compliance with the License.
- ** You may obtain a copy of the License at
- **
- **     http://www.apache.org/licenses/LICENSE-2.0
- **
- ** Unless required by applicable law or agreed to in writing, software
- ** distributed under the License is distributed on an "AS IS" BASIS,
- ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- ** See the License for the specific language governing permissions and
- ** limitations under the License.
- */
-
-#ifndef HARDWARE_INTERFACES_KEYMASTER_40_SUPPORT_KEYMASTER_3_H_
-#define HARDWARE_INTERFACES_KEYMASTER_40_SUPPORT_KEYMASTER_3_H_
-
-#include <android/hardware/keymaster/3.0/IKeymasterDevice.h>
-
-#include "Keymaster.h"
-
-namespace android {
-namespace hardware {
-namespace keymaster {
-namespace V4_0 {
-namespace support {
-
-using IKeymaster3Device = ::android::hardware::keymaster::V3_0::IKeymasterDevice;
-
-using ::android::sp;
-using ::android::hardware::hidl_string;
-using ::android::hardware::hidl_vec;
-using ::android::hardware::Return;
-using ::android::hardware::Void;
-using ::android::hardware::details::return_status;
-
-class Keymaster3 : public Keymaster {
-   public:
-    using WrappedIKeymasterDevice = IKeymaster3Device;
-    Keymaster3(sp<IKeymaster3Device> km3_dev, const hidl_string& instanceName)
-        : Keymaster(IKeymaster3Device::descriptor, instanceName),
-          km3_dev_(km3_dev),
-          haveVersion_(false) {}
-
-    const VersionResult& halVersion() const override {
-        const_cast<Keymaster3*>(this)->getVersionIfNeeded();
-        return version_;
-    }
-
-    Return<void> getHardwareInfo(getHardwareInfo_cb _hidl_cb);
-
-    Return<void> getHmacSharingParameters(getHmacSharingParameters_cb _hidl_cb) override {
-        _hidl_cb(ErrorCode::UNIMPLEMENTED, {});
-        return Void();
-    }
-
-    Return<void> computeSharedHmac(const hidl_vec<HmacSharingParameters>&,
-                                   computeSharedHmac_cb _hidl_cb) override {
-        _hidl_cb(ErrorCode::UNIMPLEMENTED, {});
-        return Void();
-    }
-
-    Return<void> verifyAuthorization(uint64_t, const hidl_vec<KeyParameter>&,
-                                     const HardwareAuthToken&,
-                                     verifyAuthorization_cb _hidl_cb) override {
-        _hidl_cb(ErrorCode::UNIMPLEMENTED, {});
-        return Void();
-    }
-
-    Return<ErrorCode> addRngEntropy(const hidl_vec<uint8_t>& data) override;
-    Return<void> generateKey(const hidl_vec<KeyParameter>& keyParams,
-                             generateKey_cb _hidl_cb) override;
-    Return<void> getKeyCharacteristics(const hidl_vec<uint8_t>& keyBlob,
-                                       const hidl_vec<uint8_t>& clientId,
-                                       const hidl_vec<uint8_t>& appData,
-                                       getKeyCharacteristics_cb _hidl_cb) override;
-    Return<void> importKey(const hidl_vec<KeyParameter>& params, KeyFormat keyFormat,
-                           const hidl_vec<uint8_t>& keyData, importKey_cb _hidl_cb) override;
-
-    Return<void> importWrappedKey(const hidl_vec<uint8_t>& /* wrappedKeyData */,
-                                  const hidl_vec<uint8_t>& /* wrappingKeyBlob */,
-                                  const hidl_vec<uint8_t>& /* maskingKey */,
-                                  const hidl_vec<KeyParameter>& /* unwrappingParams */,
-                                  uint64_t /* passwordSid */, uint64_t /* biometricSid */,
-                                  importWrappedKey_cb _hidl_cb) {
-        _hidl_cb(ErrorCode::UNIMPLEMENTED, {}, {});
-        return Void();
-    }
-
-    Return<void> exportKey(KeyFormat exportFormat, const hidl_vec<uint8_t>& keyBlob,
-                           const hidl_vec<uint8_t>& clientId, const hidl_vec<uint8_t>& appData,
-                           exportKey_cb _hidl_cb) override;
-    Return<void> attestKey(const hidl_vec<uint8_t>& keyToAttest,
-                           const hidl_vec<KeyParameter>& attestParams,
-                           attestKey_cb _hidl_cb) override;
-    Return<void> upgradeKey(const hidl_vec<uint8_t>& keyBlobToUpgrade,
-                            const hidl_vec<KeyParameter>& upgradeParams,
-                            upgradeKey_cb _hidl_cb) override;
-    Return<ErrorCode> deleteKey(const hidl_vec<uint8_t>& keyBlob) override;
-    Return<ErrorCode> deleteAllKeys() override;
-    Return<ErrorCode> destroyAttestationIds() override;
-    Return<void> begin(KeyPurpose purpose, const hidl_vec<uint8_t>& key,
-                       const hidl_vec<KeyParameter>& inParams, const HardwareAuthToken& authToken,
-                       begin_cb _hidl_cb) override;
-    Return<void> update(uint64_t operationHandle, const hidl_vec<KeyParameter>& inParams,
-                        const hidl_vec<uint8_t>& input, const HardwareAuthToken& authToken,
-                        const VerificationToken& verificationToken, update_cb _hidl_cb) override;
-    Return<void> finish(uint64_t operationHandle, const hidl_vec<KeyParameter>& inParams,
-                        const hidl_vec<uint8_t>& input, const hidl_vec<uint8_t>& signature,
-                        const HardwareAuthToken& authToken,
-                        const VerificationToken& verificationToken, finish_cb _hidl_cb) override;
-    Return<ErrorCode> abort(uint64_t operationHandle) override;
-
-   private:
-    void getVersionIfNeeded();
-
-    sp<IKeymaster3Device> km3_dev_;
-
-    bool haveVersion_;
-    VersionResult version_;
-    bool supportsSymmetricCryptography_;
-    bool supportsAttestation_;
-    bool supportsAllDigests_;
-};
-
-}  // namespace support
-}  // namespace V4_0
-}  // namespace keymaster
-}  // namespace hardware
-}  // namespace android
-
-#endif  // HARDWARE_INTERFACES_KEYMASTER_40_SUPPORT_KEYMASTER_3_H_
diff --git a/keymaster/4.0/support/include/keymasterV4_0/Keymaster4.h b/keymaster/4.0/support/include/keymasterV4_0/Keymaster4.h
deleted file mode 100644
index dfd03ef..0000000
--- a/keymaster/4.0/support/include/keymasterV4_0/Keymaster4.h
+++ /dev/null
@@ -1,160 +0,0 @@
-/*
- **
- ** Copyright 2017, The Android Open Source Project
- **
- ** Licensed under the Apache License, Version 2.0 (the "License");
- ** you may not use this file except in compliance with the License.
- ** You may obtain a copy of the License at
- **
- **     http://www.apache.org/licenses/LICENSE-2.0
- **
- ** Unless required by applicable law or agreed to in writing, software
- ** distributed under the License is distributed on an "AS IS" BASIS,
- ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- ** See the License for the specific language governing permissions and
- ** limitations under the License.
- */
-
-#ifndef HARDWARE_INTERFACES_KEYMASTER_40_SUPPORT_KEYMASTER_4_H_
-#define HARDWARE_INTERFACES_KEYMASTER_40_SUPPORT_KEYMASTER_4_H_
-
-#include "Keymaster.h"
-
-namespace android {
-namespace hardware {
-namespace keymaster {
-namespace V4_0 {
-namespace support {
-
-using android::sp;
-using IKeymaster4Device = ::android::hardware::keymaster::V4_0::IKeymasterDevice;
-
-class Keymaster4 : public Keymaster {
-   public:
-    using WrappedIKeymasterDevice = IKeymaster4Device;
-    Keymaster4(sp<IKeymasterDevice> km4_dev, const hidl_string& instanceName)
-        : Keymaster(IKeymaster4Device::descriptor, instanceName),
-          haveVersion_(false),
-          dev_(km4_dev) {}
-
-    const VersionResult& halVersion() const override {
-        const_cast<Keymaster4*>(this)->getVersionIfNeeded();
-        return version_;
-    }
-
-    Return<void> getHardwareInfo(getHardwareInfo_cb _hidl_cb) override {
-        return dev_->getHardwareInfo(_hidl_cb);
-    }
-
-    Return<void> getHmacSharingParameters(getHmacSharingParameters_cb _hidl_cb) override {
-        return dev_->getHmacSharingParameters(_hidl_cb);
-    }
-
-    Return<void> computeSharedHmac(const hidl_vec<HmacSharingParameters>& params,
-                                   computeSharedHmac_cb _hidl_cb) override {
-        return dev_->computeSharedHmac(params, _hidl_cb);
-    }
-
-    Return<void> verifyAuthorization(uint64_t operationHandle, const hidl_vec<KeyParameter>& params,
-                                     const HardwareAuthToken& authToken,
-                                     verifyAuthorization_cb _hidl_cb) override {
-        return dev_->verifyAuthorization(operationHandle, params, authToken, _hidl_cb);
-    }
-
-    Return<ErrorCode> addRngEntropy(const hidl_vec<uint8_t>& data) override {
-        return dev_->addRngEntropy(data);
-    }
-
-    Return<void> generateKey(const hidl_vec<KeyParameter>& keyParams,
-                             generateKey_cb _hidl_cb) override {
-        return dev_->generateKey(keyParams, _hidl_cb);
-    }
-
-    Return<void> getKeyCharacteristics(const hidl_vec<uint8_t>& keyBlob,
-                                       const hidl_vec<uint8_t>& clientId,
-                                       const hidl_vec<uint8_t>& appData,
-                                       getKeyCharacteristics_cb _hidl_cb) override {
-        return dev_->getKeyCharacteristics(keyBlob, clientId, appData, _hidl_cb);
-    }
-
-    Return<void> importKey(const hidl_vec<KeyParameter>& params, KeyFormat keyFormat,
-                           const hidl_vec<uint8_t>& keyData, importKey_cb _hidl_cb) override {
-        return dev_->importKey(params, keyFormat, keyData, _hidl_cb);
-    }
-
-    Return<void> importWrappedKey(const hidl_vec<uint8_t>& wrappedKeyData,
-                                  const hidl_vec<uint8_t>& wrappingKeyBlob,
-                                  const hidl_vec<uint8_t>& maskingKey,
-                                  const hidl_vec<KeyParameter>& unwrappingParams,
-                                  uint64_t passwordSid, uint64_t biometricSid,
-                                  importWrappedKey_cb _hidl_cb) {
-        return dev_->importWrappedKey(wrappedKeyData, wrappingKeyBlob, maskingKey, unwrappingParams,
-                                      passwordSid, biometricSid, _hidl_cb);
-    }
-
-    Return<void> exportKey(KeyFormat exportFormat, const hidl_vec<uint8_t>& keyBlob,
-                           const hidl_vec<uint8_t>& clientId, const hidl_vec<uint8_t>& appData,
-                           exportKey_cb _hidl_cb) override {
-        return dev_->exportKey(exportFormat, keyBlob, clientId, appData, _hidl_cb);
-    }
-
-    Return<void> attestKey(const hidl_vec<uint8_t>& keyToAttest,
-                           const hidl_vec<KeyParameter>& attestParams,
-                           attestKey_cb _hidl_cb) override {
-        return dev_->attestKey(keyToAttest, attestParams, _hidl_cb);
-    }
-
-    Return<void> upgradeKey(const hidl_vec<uint8_t>& keyBlobToUpgrade,
-                            const hidl_vec<KeyParameter>& upgradeParams,
-                            upgradeKey_cb _hidl_cb) override {
-        return dev_->upgradeKey(keyBlobToUpgrade, upgradeParams, _hidl_cb);
-    }
-
-    Return<ErrorCode> deleteKey(const hidl_vec<uint8_t>& keyBlob) override {
-        return dev_->deleteKey(keyBlob);
-    }
-
-    Return<ErrorCode> deleteAllKeys() override { return dev_->deleteAllKeys(); }
-
-    Return<ErrorCode> destroyAttestationIds() override { return dev_->destroyAttestationIds(); }
-
-    Return<void> begin(KeyPurpose purpose, const hidl_vec<uint8_t>& key,
-                       const hidl_vec<KeyParameter>& inParams, const HardwareAuthToken& authToken,
-                       begin_cb _hidl_cb) override {
-        return dev_->begin(purpose, key, inParams, authToken, _hidl_cb);
-    }
-
-    Return<void> update(uint64_t operationHandle, const hidl_vec<KeyParameter>& inParams,
-                        const hidl_vec<uint8_t>& input, const HardwareAuthToken& authToken,
-                        const VerificationToken& verificationToken, update_cb _hidl_cb) override {
-        return dev_->update(operationHandle, inParams, input, authToken, verificationToken,
-                            _hidl_cb);
-    }
-
-    Return<void> finish(uint64_t operationHandle, const hidl_vec<KeyParameter>& inParams,
-                        const hidl_vec<uint8_t>& input, const hidl_vec<uint8_t>& signature,
-                        const HardwareAuthToken& authToken,
-                        const VerificationToken& verificationToken, finish_cb _hidl_cb) override {
-        return dev_->finish(operationHandle, inParams, input, signature, authToken,
-                            verificationToken, _hidl_cb);
-    }
-
-    Return<ErrorCode> abort(uint64_t operationHandle) override {
-        return dev_->abort(operationHandle);
-    }
-
-   private:
-    void getVersionIfNeeded();
-
-    bool haveVersion_;
-    VersionResult version_;
-    sp<IKeymaster4Device> dev_;
-};
-
-}  // namespace support
-}  // namespace V4_0
-}  // namespace keymaster
-}  // namespace hardware
-}  // namespace android
-
-#endif  // HARDWARE_INTERFACES_KEYMASTER_40_SUPPORT_KEYMASTER_4_H_
diff --git a/keymaster/4.0/support/include/keymasterV4_0/keymaster_tags.h b/keymaster/4.0/support/include/keymasterV4_0/keymaster_tags.h
index cb29c64..bc7f311 100644
--- a/keymaster/4.0/support/include/keymasterV4_0/keymaster_tags.h
+++ b/keymaster/4.0/support/include/keymasterV4_0/keymaster_tags.h
@@ -355,95 +355,61 @@
     return accessTagValue(ttag, param);
 }
 
+inline bool operator<(const KeyParameter& a, const KeyParameter& b) {
+    if (a.tag != b.tag) return a.tag < b.tag;
+    int retval;
+    switch (typeFromTag(a.tag)) {
+        case TagType::INVALID:
+        case TagType::BOOL:
+            return false;
+        case TagType::ENUM:
+        case TagType::ENUM_REP:
+        case TagType::UINT:
+        case TagType::UINT_REP:
+            return a.f.integer < b.f.integer;
+        case TagType::ULONG:
+        case TagType::ULONG_REP:
+            return a.f.longInteger < b.f.longInteger;
+        case TagType::DATE:
+            return a.f.dateTime < b.f.dateTime;
+        case TagType::BIGNUM:
+        case TagType::BYTES:
+            // Handle the empty cases.
+            if (a.blob.size() == 0) return b.blob.size() != 0;
+            if (b.blob.size() == 0) return false;
+
+            retval = memcmp(&a.blob[0], &b.blob[0], std::min(a.blob.size(), b.blob.size()));
+            // if one is the prefix of the other the longer wins
+            if (retval == 0) return a.blob.size() < b.blob.size();
+            // Otherwise a is less if a is less.
+            else
+                return retval < 0;
+    }
+    return false;
+}
+
 inline bool operator==(const KeyParameter& a, const KeyParameter& b) {
-    if (a.tag != b.tag) {
-        return false;
-    }
+    if (a.tag != b.tag) return false;
 
-    switch (a.tag) {
-        /* Boolean tags */
-        case Tag::INVALID:
-        case Tag::CALLER_NONCE:
-        case Tag::INCLUDE_UNIQUE_ID:
-        case Tag::BOOTLOADER_ONLY:
-        case Tag::NO_AUTH_REQUIRED:
-        case Tag::ALLOW_WHILE_ON_BODY:
-        case Tag::UNLOCKED_DEVICE_REQUIRED:
-        case Tag::ROLLBACK_RESISTANCE:
-        case Tag::RESET_SINCE_ID_ROTATION:
-        case Tag::TRUSTED_CONFIRMATION_REQUIRED:
-        case Tag::TRUSTED_USER_PRESENCE_REQUIRED:
+    switch (typeFromTag(a.tag)) {
+        case TagType::INVALID:
+        case TagType::BOOL:
             return true;
-
-        /* Integer tags */
-        case Tag::KEY_SIZE:
-        case Tag::MIN_MAC_LENGTH:
-        case Tag::MIN_SECONDS_BETWEEN_OPS:
-        case Tag::MAX_USES_PER_BOOT:
-        case Tag::OS_VERSION:
-        case Tag::OS_PATCHLEVEL:
-        case Tag::MAC_LENGTH:
-        case Tag::USER_ID:
-        case Tag::AUTH_TIMEOUT:
-        case Tag::VENDOR_PATCHLEVEL:
-        case Tag::BOOT_PATCHLEVEL:
+        case TagType::ENUM:
+        case TagType::ENUM_REP:
+        case TagType::UINT:
+        case TagType::UINT_REP:
             return a.f.integer == b.f.integer;
-
-        /* Long integer tags */
-        case Tag::RSA_PUBLIC_EXPONENT:
-        case Tag::USER_SECURE_ID:
+        case TagType::ULONG:
+        case TagType::ULONG_REP:
             return a.f.longInteger == b.f.longInteger;
-
-        /* Date-time tags */
-        case Tag::ACTIVE_DATETIME:
-        case Tag::ORIGINATION_EXPIRE_DATETIME:
-        case Tag::USAGE_EXPIRE_DATETIME:
-        case Tag::CREATION_DATETIME:
+        case TagType::DATE:
             return a.f.dateTime == b.f.dateTime;
-
-        /* Bytes tags */
-        case Tag::APPLICATION_ID:
-        case Tag::APPLICATION_DATA:
-        case Tag::ROOT_OF_TRUST:
-        case Tag::UNIQUE_ID:
-        case Tag::ATTESTATION_CHALLENGE:
-        case Tag::ATTESTATION_APPLICATION_ID:
-        case Tag::ATTESTATION_ID_BRAND:
-        case Tag::ATTESTATION_ID_DEVICE:
-        case Tag::ATTESTATION_ID_PRODUCT:
-        case Tag::ATTESTATION_ID_SERIAL:
-        case Tag::ATTESTATION_ID_IMEI:
-        case Tag::ATTESTATION_ID_MEID:
-        case Tag::ATTESTATION_ID_MANUFACTURER:
-        case Tag::ATTESTATION_ID_MODEL:
-        case Tag::ASSOCIATED_DATA:
-        case Tag::CONFIRMATION_TOKEN:
-        case Tag::NONCE:
-            return a.blob == b.blob;
-
-        /* Enum tags */
-        case Tag::PURPOSE:
-            return a.f.purpose == b.f.purpose;
-        case Tag::ALGORITHM:
-            return a.f.algorithm == b.f.algorithm;
-        case Tag::BLOCK_MODE:
-            return a.f.blockMode == b.f.blockMode;
-        case Tag::DIGEST:
-            return a.f.digest == b.f.digest;
-        case Tag::PADDING:
-            return a.f.paddingMode == b.f.paddingMode;
-        case Tag::EC_CURVE:
-            return a.f.ecCurve == b.f.ecCurve;
-        case Tag::BLOB_USAGE_REQUIREMENTS:
-            return a.f.keyBlobUsageRequirements == b.f.keyBlobUsageRequirements;
-        case Tag::USER_AUTH_TYPE:
-            return a.f.integer == b.f.integer;
-        case Tag::ORIGIN:
-            return a.f.origin == b.f.origin;
-        case Tag::HARDWARE_TYPE:
-            return a.f.hardwareType == b.f.hardwareType;
+        case TagType::BIGNUM:
+        case TagType::BYTES:
+            if (a.blob.size() != b.blob.size()) return false;
+            return a.blob.size() == 0 || memcmp(&a.blob[0], &b.blob[0], a.blob.size()) == 0;
     }
-
     return false;
 }
 
diff --git a/keymaster/4.0/support/include/keymasterV4_0/keymaster_utils.h b/keymaster/4.0/support/include/keymasterV4_0/keymaster_utils.h
index 5e5ae8d..61645f8 100644
--- a/keymaster/4.0/support/include/keymasterV4_0/keymaster_utils.h
+++ b/keymaster/4.0/support/include/keymasterV4_0/keymaster_utils.h
@@ -52,6 +52,9 @@
 HardwareAuthToken hidlVec2AuthToken(const hidl_vec<uint8_t>& buffer);
 hidl_vec<uint8_t> authToken2HidlVec(const HardwareAuthToken& token);
 
+uint32_t getOsVersion();
+uint32_t getOsPatchlevel();
+
 }  // namespace support
 }  // namespace V4_0
 }  // namespace keymaster
diff --git a/keymaster/4.0/support/include/keymasterV4_0/openssl_utils.h b/keymaster/4.0/support/include/keymasterV4_0/openssl_utils.h
index cc71dd1..b3869f4 100644
--- a/keymaster/4.0/support/include/keymasterV4_0/openssl_utils.h
+++ b/keymaster/4.0/support/include/keymasterV4_0/openssl_utils.h
@@ -18,6 +18,8 @@
 #define HARDWARE_INTERFACES_KEYMASTER_4_0_SUPPORT_OPENSSL_UTILS_H_
 
 #include <android/hardware/keymaster/4.0/types.h>
+#include <openssl/evp.h>
+#include <openssl/x509.h>
 
 template <typename T, void (*F)(T*)>
 struct UniquePtrDeleter {
diff --git a/keymaster/4.0/support/keymaster_utils.cpp b/keymaster/4.0/support/keymaster_utils.cpp
index e35fdd3..850a776 100644
--- a/keymaster/4.0/support/keymaster_utils.cpp
+++ b/keymaster/4.0/support/keymaster_utils.cpp
@@ -14,11 +14,13 @@
  * limitations under the License.
  */
 
+#include <regex.h>
+
+#include <android-base/properties.h>
 #include <hardware/hw_auth_token.h>
 #include <keymasterV4_0/keymaster_utils.h>
 
-namespace android {
-namespace hardware {
+namespace android::hardware {
 
 inline static bool operator<(const hidl_vec<uint8_t>& a, const hidl_vec<uint8_t>& b) {
     auto result = memcmp(a.data(), b.data(), std::min(a.size(), b.size()));
@@ -32,8 +34,7 @@
     return memcmp(a.data(), b.data(), SIZE) == -1;
 }
 
-namespace keymaster {
-namespace V4_0 {
+namespace keymaster::V4_0 {
 
 bool operator<(const HmacSharingParameters& a, const HmacSharingParameters& b) {
     return std::tie(a.seed, a.nonce) < std::tie(b.seed, b.nonce);
@@ -58,9 +59,9 @@
 
 hidl_vec<uint8_t> authToken2HidlVec(const HardwareAuthToken& token) {
     static_assert(1 /* version size */ + sizeof(token.challenge) + sizeof(token.userId) +
-                          sizeof(token.authenticatorId) + sizeof(token.authenticatorType) +
-                          sizeof(token.timestamp) + kHmacSize ==
-                      sizeof(hw_auth_token_t),
+                                  sizeof(token.authenticatorId) + sizeof(token.authenticatorType) +
+                                  sizeof(token.timestamp) + kHmacSize ==
+                          sizeof(hw_auth_token_t),
                   "HardwareAuthToken content size does not match hw_auth_token_t size");
 
     hidl_vec<uint8_t> result;
@@ -86,9 +87,9 @@
 HardwareAuthToken hidlVec2AuthToken(const hidl_vec<uint8_t>& buffer) {
     HardwareAuthToken token;
     static_assert(1 /* version size */ + sizeof(token.challenge) + sizeof(token.userId) +
-                          sizeof(token.authenticatorId) + sizeof(token.authenticatorType) +
-                          sizeof(token.timestamp) + kHmacSize ==
-                      sizeof(hw_auth_token_t),
+                                  sizeof(token.authenticatorId) + sizeof(token.authenticatorType) +
+                                  sizeof(token.timestamp) + kHmacSize ==
+                          sizeof(hw_auth_token_t),
                   "HardwareAuthToken content size does not match hw_auth_token_t size");
 
     if (buffer.size() != sizeof(hw_auth_token_t)) return {};
@@ -100,7 +101,7 @@
     pos = copy_bytes_from_iterator(&token.authenticatorId, pos);
     pos = copy_bytes_from_iterator(&token.authenticatorType, pos);
     token.authenticatorType = static_cast<HardwareAuthenticatorType>(
-        ntohl(static_cast<uint32_t>(token.authenticatorType)));
+            ntohl(static_cast<uint32_t>(token.authenticatorType)));
     pos = copy_bytes_from_iterator(&token.timestamp, pos);
     token.timestamp = ntohq(token.timestamp);
     token.mac.resize(kHmacSize);
@@ -109,8 +110,93 @@
     return token;
 }
 
+namespace {
+
+constexpr char kPlatformVersionProp[] = "ro.build.version.release";
+constexpr char kPlatformVersionRegex[] = "^([0-9]{1,2})(\\.([0-9]{1,2}))?(\\.([0-9]{1,2}))?";
+constexpr size_t kMajorVersionMatch = 1;
+constexpr size_t kMinorVersionMatch = 3;
+constexpr size_t kSubminorVersionMatch = 5;
+constexpr size_t kPlatformVersionMatchCount = kSubminorVersionMatch + 1;
+
+constexpr char kPlatformPatchlevelProp[] = "ro.build.version.security_patch";
+constexpr char kPlatformPatchlevelRegex[] = "^([0-9]{4})-([0-9]{2})-[0-9]{2}$";
+constexpr size_t kYearMatch = 1;
+constexpr size_t kMonthMatch = 2;
+constexpr size_t kPlatformPatchlevelMatchCount = kMonthMatch + 1;
+
+uint32_t match_to_uint32(const char* expression, const regmatch_t& match) {
+    if (match.rm_so == -1) return 0;
+
+    size_t len = match.rm_eo - match.rm_so;
+    std::string s(expression + match.rm_so, len);
+    return std::stoul(s);
+}
+
+std::string wait_and_get_property(const char* prop) {
+    std::string prop_value;
+    while (!android::base::WaitForPropertyCreation(prop))
+        ;
+    prop_value = android::base::GetProperty(prop, "" /* default */);
+    return prop_value;
+}
+
+}  // anonymous namespace
+
+uint32_t getOsVersion(const char* version_str) {
+    regex_t regex;
+    if (regcomp(&regex, kPlatformVersionRegex, REG_EXTENDED)) {
+        return 0;
+    }
+
+    regmatch_t matches[kPlatformVersionMatchCount];
+    int not_match =
+            regexec(&regex, version_str, kPlatformVersionMatchCount, matches, 0 /* flags */);
+    regfree(&regex);
+    if (not_match) {
+        return 0;
+    }
+
+    uint32_t major = match_to_uint32(version_str, matches[kMajorVersionMatch]);
+    uint32_t minor = match_to_uint32(version_str, matches[kMinorVersionMatch]);
+    uint32_t subminor = match_to_uint32(version_str, matches[kSubminorVersionMatch]);
+
+    return (major * 100 + minor) * 100 + subminor;
+}
+
+uint32_t getOsVersion() {
+    std::string version = wait_and_get_property(kPlatformVersionProp);
+    return getOsVersion(version.c_str());
+}
+
+uint32_t getOsPatchlevel(const char* patchlevel_str) {
+    regex_t regex;
+    if (regcomp(&regex, kPlatformPatchlevelRegex, REG_EXTENDED) != 0) {
+        return 0;
+    }
+
+    regmatch_t matches[kPlatformPatchlevelMatchCount];
+    int not_match =
+            regexec(&regex, patchlevel_str, kPlatformPatchlevelMatchCount, matches, 0 /* flags */);
+    regfree(&regex);
+    if (not_match) {
+        return 0;
+    }
+
+    uint32_t year = match_to_uint32(patchlevel_str, matches[kYearMatch]);
+    uint32_t month = match_to_uint32(patchlevel_str, matches[kMonthMatch]);
+
+    if (month < 1 || month > 12) {
+        return 0;
+    }
+    return year * 100 + month;
+}
+
+uint32_t getOsPatchlevel() {
+    std::string patchlevel = wait_and_get_property(kPlatformPatchlevelProp);
+    return getOsPatchlevel(patchlevel.c_str());
+}
+
 }  // namespace support
-}  // namespace V4_0
-}  // namespace keymaster
-}  // namespace hardware
-}  // namespace android
+}  // namespace keymaster::V4_0
+}  // namespace android::hardware
diff --git a/keymaster/4.0/vts/functional/Android.bp b/keymaster/4.0/vts/functional/Android.bp
index 5649f20..db50080 100644
--- a/keymaster/4.0/vts/functional/Android.bp
+++ b/keymaster/4.0/vts/functional/Android.bp
@@ -19,7 +19,6 @@
     defaults: ["VtsHalTargetTestDefaults"],
     srcs: [
         "HmacKeySharingTest.cpp",
-        "KeymasterHidlTest.cpp",
         "VerificationTokenTest.cpp",
         "keymaster_hidl_hal_test.cpp",
     ],
@@ -27,7 +26,25 @@
         "android.hardware.keymaster@4.0",
         "libcrypto_static",
         "libkeymaster4support",
-        "libsoftkeymasterdevice",
+        "libkeymaster4vtstest",
     ],
-    test_suites: ["general-tests", "vts-core"],
+    test_suites: [
+        "general-tests",
+        "vts-core",
+    ],
+}
+
+cc_test_library {
+    name: "libkeymaster4vtstest",
+    defaults: ["VtsHalTargetTestDefaults"],
+    srcs: [
+        "KeymasterHidlTest.cpp",
+    ],
+    export_include_dirs: [
+        ".",
+    ],
+    static_libs: [
+        "android.hardware.keymaster@4.0",
+        "libkeymaster4support",
+    ],
 }
diff --git a/keymaster/4.0/vts/functional/HmacKeySharingTest.cpp b/keymaster/4.0/vts/functional/HmacKeySharingTest.cpp
index c228ef7..f57a668 100644
--- a/keymaster/4.0/vts/functional/HmacKeySharingTest.cpp
+++ b/keymaster/4.0/vts/functional/HmacKeySharingTest.cpp
@@ -28,6 +28,16 @@
  */
 class HmacKeySharingTest : public KeymasterHidlTest {
    protected:
+     const std::vector<sp<IKeymasterDevice>>& allKeymasters() {
+         if (all_keymasters_.empty()) {
+             auto names = android::hardware::getAllHalInstanceNames(IKeymasterDevice::descriptor);
+             for (const auto& name : names) {
+                 all_keymasters_.push_back(IKeymasterDevice::getService(name));
+             }
+         }
+         return all_keymasters_;
+     }
+
     struct GetParamsResult {
         ErrorCode error;
         HmacSharingParameters params;
@@ -99,8 +109,13 @@
             EXPECT_EQ(expected, response.sharing_check) << "Sharing check values should match.";
         }
     }
+
+  private:
+    static std::vector<sp<IKeymasterDevice>> all_keymasters_;
 };
 
+std::vector<sp<IKeymasterDevice>> HmacKeySharingTest::all_keymasters_;
+
 TEST_P(HmacKeySharingTest, GetParameters) {
     auto result1 = getHmacSharingParameters(keymaster());
     EXPECT_EQ(ErrorCode::OK, result1.error);
@@ -115,26 +130,26 @@
 }
 
 TEST_P(HmacKeySharingTest, ComputeSharedHmac) {
-    auto params = getHmacSharingParameters(all_keymasters());
-    ASSERT_EQ(all_keymasters().size(), params.size())
-        << "One or more keymasters failed to provide parameters.";
+    auto params = getHmacSharingParameters(allKeymasters());
+    ASSERT_EQ(allKeymasters().size(), params.size())
+            << "One or more keymasters failed to provide parameters.";
 
     auto nonces = copyNonces(params);
-    EXPECT_EQ(all_keymasters().size(), nonces.size());
+    EXPECT_EQ(allKeymasters().size(), nonces.size());
     std::sort(nonces.begin(), nonces.end());
     std::unique(nonces.begin(), nonces.end());
-    EXPECT_EQ(all_keymasters().size(), nonces.size());
+    EXPECT_EQ(allKeymasters().size(), nonces.size());
 
-    auto responses = computeSharedHmac(all_keymasters(), params);
+    auto responses = computeSharedHmac(allKeymasters(), params);
     ASSERT_GT(responses.size(), 0U);
     verifyResponses(responses[0].sharing_check, responses);
 
     // Do it a second time.  Should get the same answers.
-    params = getHmacSharingParameters(all_keymasters());
-    ASSERT_EQ(all_keymasters().size(), params.size())
-        << "One or more keymasters failed to provide parameters.";
+    params = getHmacSharingParameters(allKeymasters());
+    ASSERT_EQ(allKeymasters().size(), params.size())
+            << "One or more keymasters failed to provide parameters.";
 
-    responses = computeSharedHmac(all_keymasters(), params);
+    responses = computeSharedHmac(allKeymasters(), params);
     ASSERT_GT(responses.size(), 0U);
     ASSERT_EQ(32U, responses[0].sharing_check.size());
     verifyResponses(responses[0].sharing_check, responses);
@@ -160,15 +175,16 @@
     // sync with respect to the HMAC key.  Granted that VTS tests aren't run on in-use production
     // devices, this still has the potential to cause confusion.  To mitigate that, we always
     // (barring crashes :-/) re-run the unmodified agreement process on our way out.
-    auto fixup_hmac = finally(
-        [&]() { computeSharedHmac(all_keymasters(), getHmacSharingParameters(all_keymasters())); });
+    auto fixup_hmac = finally([&]() {
+        computeSharedHmac(allKeymasters(), getHmacSharingParameters(allKeymasters()));
+    });
 
-    auto params = getHmacSharingParameters(all_keymasters());
-    ASSERT_EQ(all_keymasters().size(), params.size())
-        << "One or more keymasters failed to provide parameters.";
+    auto params = getHmacSharingParameters(allKeymasters());
+    ASSERT_EQ(allKeymasters().size(), params.size())
+            << "One or more keymasters failed to provide parameters.";
 
     // All should be well in the normal case
-    auto responses = computeSharedHmac(all_keymasters(), params);
+    auto responses = computeSharedHmac(allKeymasters(), params);
 
     ASSERT_GT(responses.size(), 0U);
     HidlBuf correct_response = responses[0].sharing_check;
@@ -181,7 +197,7 @@
     uint8_t bit_to_tweak = rand() % 8;
     params[param_to_tweak].nonce[byte_to_tweak] ^= (1 << bit_to_tweak);
 
-    responses = computeSharedHmac(all_keymasters(), params);
+    responses = computeSharedHmac(allKeymasters(), params);
     for (size_t i = 0; i < responses.size(); ++i) {
         if (i == param_to_tweak) {
             EXPECT_EQ(ErrorCode::INVALID_ARGUMENT, responses[i].error)
@@ -199,15 +215,16 @@
     // sync with respect to the HMAC key.  Granted that VTS tests aren't run on in-use production
     // devices, this still has the potential to cause confusion.  To mitigate that, we always
     // (barring crashes :-/) re-run the unmodified agreement process on our way out.
-    auto fixup_hmac = finally(
-        [&]() { computeSharedHmac(all_keymasters(), getHmacSharingParameters(all_keymasters())); });
+    auto fixup_hmac = finally([&]() {
+        computeSharedHmac(allKeymasters(), getHmacSharingParameters(allKeymasters()));
+    });
 
-    auto params = getHmacSharingParameters(all_keymasters());
-    ASSERT_EQ(all_keymasters().size(), params.size())
-        << "One or more keymasters failed to provide parameters.";
+    auto params = getHmacSharingParameters(allKeymasters());
+    ASSERT_EQ(allKeymasters().size(), params.size())
+            << "One or more keymasters failed to provide parameters.";
 
     // All should be well in the normal case
-    auto responses = computeSharedHmac(all_keymasters(), params);
+    auto responses = computeSharedHmac(allKeymasters(), params);
 
     ASSERT_GT(responses.size(), 0U);
     HidlBuf correct_response = responses[0].sharing_check;
@@ -223,7 +240,7 @@
     }
     to_tweak[0]++;
 
-    responses = computeSharedHmac(all_keymasters(), params);
+    responses = computeSharedHmac(allKeymasters(), params);
     for (size_t i = 0; i < responses.size(); ++i) {
         if (i == param_to_tweak) {
             EXPECT_EQ(ErrorCode::INVALID_ARGUMENT, responses[i].error)
@@ -236,10 +253,7 @@
     }
 }
 
-INSTANTIATE_TEST_SUITE_P(
-        PerInstance, HmacKeySharingTest,
-        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IKeymasterDevice::descriptor)),
-        android::hardware::PrintInstanceNameToString);
+INSTANTIATE_KEYMASTER_HIDL_TEST(HmacKeySharingTest);
 
 }  // namespace test
 }  // namespace V4_0
diff --git a/keymaster/4.0/vts/functional/KeymasterHidlTest.cpp b/keymaster/4.0/vts/functional/KeymasterHidlTest.cpp
index 7241984..d0ad433 100644
--- a/keymaster/4.0/vts/functional/KeymasterHidlTest.cpp
+++ b/keymaster/4.0/vts/functional/KeymasterHidlTest.cpp
@@ -23,6 +23,7 @@
 #include <android/hidl/manager/1.0/IServiceManager.h>
 
 #include <keymasterV4_0/key_param_output.h>
+#include <keymasterV4_0/keymaster_utils.h>
 
 namespace android {
 namespace hardware {
@@ -41,39 +42,26 @@
 
 namespace test {
 
-void KeymasterHidlTest::InitializeKeymaster() {
-    service_name_ = GetParam();
-    keymaster_ = IKeymasterDevice::getService(service_name_);
-    ASSERT_NE(keymaster_, nullptr);
+using namespace std::literals::chrono_literals;
 
+void KeymasterHidlTest::InitializeKeymaster(sp<IKeymasterDevice> keymaster) {
+    ASSERT_NE(keymaster, nullptr);
+    keymaster_ = keymaster;
     ASSERT_TRUE(keymaster_
-                    ->getHardwareInfo([&](SecurityLevel securityLevel, const hidl_string& name,
-                                          const hidl_string& author) {
-                        securityLevel_ = securityLevel;
-                        name_ = name;
-                        author_ = author;
-                    })
-                    .isOk());
+                        ->getHardwareInfo([&](SecurityLevel securityLevel, const hidl_string& name,
+                                              const hidl_string& author) {
+                            securityLevel_ = securityLevel;
+                            name_ = name;
+                            author_ = author;
+                        })
+                        .isOk());
+
+    os_version_ = support::getOsVersion();
+    os_patch_level_ = support::getOsPatchlevel();
 }
 
 void KeymasterHidlTest::SetUp() {
-    InitializeKeymaster();
-
-    os_version_ = ::keymaster::GetOsVersion();
-    os_patch_level_ = ::keymaster::GetOsPatchlevel();
-
-    auto service_manager = android::hidl::manager::V1_0::IServiceManager::getService();
-    ASSERT_NE(nullptr, service_manager.get());
-    all_keymasters_.push_back(keymaster_);
-    service_manager->listByInterface(
-        IKeymasterDevice::descriptor, [&](const hidl_vec<hidl_string>& names) {
-            for (auto& name : names) {
-                if (name == service_name_) continue;
-                auto keymaster = IKeymasterDevice::getService(name);
-                ASSERT_NE(keymaster, nullptr);
-                all_keymasters_.push_back(keymaster);
-            }
-        });
+    InitializeKeymaster(IKeymasterDevice::getService(GetParam()));
 }
 
 ErrorCode KeymasterHidlTest::GenerateKey(const AuthorizationSet& key_desc, HidlBuf* key_blob,
@@ -138,7 +126,7 @@
                                               string masking_key,
                                               const AuthorizationSet& unwrapping_params) {
     ErrorCode error;
-    ImportKey(wrapping_key_desc, KeyFormat::PKCS8, wrapping_key);
+    EXPECT_EQ(ErrorCode::OK, ImportKey(wrapping_key_desc, KeyFormat::PKCS8, wrapping_key));
     EXPECT_TRUE(keymaster_
                     ->importWrappedKey(HidlBuf(wrapped_key), key_blob_, HidlBuf(masking_key),
                                        unwrapping_params.hidl_data(), 0 /* passwordSid */,
@@ -207,7 +195,9 @@
     HidlBuf empty_buf = {};
     EXPECT_EQ(ErrorCode::OK,
               GetCharacteristics(key_blob, client_id, app_data, key_characteristics));
-    EXPECT_GT(key_characteristics->hardwareEnforced.size(), 0);
+    if (SecLevel() != SecurityLevel::SOFTWARE) {
+        EXPECT_GT(key_characteristics->hardwareEnforced.size(), 0);
+    }
     EXPECT_GT(key_characteristics->softwareEnforced.size(), 0);
 
     EXPECT_EQ(ErrorCode::INVALID_KEY_BLOB,
@@ -647,23 +637,25 @@
     switch (algorithm) {
         case Algorithm::RSA:
             switch (SecLevel()) {
+                case SecurityLevel::SOFTWARE:
                 case SecurityLevel::TRUSTED_ENVIRONMENT:
                     return {2048, 3072, 4096};
                 case SecurityLevel::STRONGBOX:
                     return {2048};
                 default:
-                    CHECK(false) << "Invalid security level " << uint32_t(SecLevel());
+                    ADD_FAILURE() << "Invalid security level " << uint32_t(SecLevel());
                     break;
             }
             break;
         case Algorithm::EC:
             switch (SecLevel()) {
+                case SecurityLevel::SOFTWARE:
                 case SecurityLevel::TRUSTED_ENVIRONMENT:
                     return {224, 256, 384, 521};
                 case SecurityLevel::STRONGBOX:
                     return {256};
                 default:
-                    CHECK(false) << "Invalid security level " << uint32_t(SecLevel());
+                    ADD_FAILURE() << "Invalid security level " << uint32_t(SecLevel());
                     break;
             }
             break;
@@ -678,25 +670,27 @@
             return retval;
         }
         default:
-            CHECK(false) << "Invalid Algorithm: " << algorithm;
+            ADD_FAILURE() << "Invalid Algorithm: " << algorithm;
             return {};
     }
-    CHECK(false) << "Should be impossible to get here";
+    ADD_FAILURE() << "Should be impossible to get here";
     return {};
 }
+
 std::vector<uint32_t> KeymasterHidlTest::InvalidKeySizes(Algorithm algorithm) {
-    if (SecLevel() == SecurityLevel::TRUSTED_ENVIRONMENT) return {};
-    CHECK(SecLevel() == SecurityLevel::STRONGBOX);
-    switch (algorithm) {
-        case Algorithm::RSA:
-            return {3072, 4096};
-        case Algorithm::EC:
-            return {224, 384, 521};
-        case Algorithm::AES:
-            return {192};
-        default:
-            return {};
+    if (SecLevel() == SecurityLevel::STRONGBOX) {
+        switch (algorithm) {
+            case Algorithm::RSA:
+                return {3072, 4096};
+            case Algorithm::EC:
+                return {224, 384, 521};
+            case Algorithm::AES:
+                return {192};
+            default:
+                return {};
+        }
     }
+    return {};
 }
 
 std::vector<EcCurve> KeymasterHidlTest::ValidCurves() {
@@ -715,6 +709,7 @@
 
 std::vector<Digest> KeymasterHidlTest::ValidDigests(bool withNone, bool withMD5) {
     switch (SecLevel()) {
+        case SecurityLevel::SOFTWARE:
         case SecurityLevel::TRUSTED_ENVIRONMENT:
             if (withNone) {
                 if (withMD5)
@@ -740,10 +735,10 @@
                 return {Digest::SHA_2_256};
             break;
         default:
-            CHECK(false) << "Invalid security level " << uint32_t(SecLevel());
+            ADD_FAILURE() << "Invalid security level " << uint32_t(SecLevel());
             break;
     }
-    CHECK(false) << "Should be impossible to get here";
+    ADD_FAILURE() << "Should be impossible to get here";
     return {};
 }
 
diff --git a/keymaster/4.0/vts/functional/KeymasterHidlTest.h b/keymaster/4.0/vts/functional/KeymasterHidlTest.h
index 4bd8b26..f495516 100644
--- a/keymaster/4.0/vts/functional/KeymasterHidlTest.h
+++ b/keymaster/4.0/vts/functional/KeymasterHidlTest.h
@@ -21,7 +21,6 @@
 #include <gtest/gtest.h>
 #include <hidl/GtestPrinter.h>
 #include <hidl/ServiceManagement.h>
-#include <keymaster/keymaster_configuration.h>
 
 #include <keymasterV4_0/authorization_set.h>
 
@@ -35,16 +34,18 @@
 namespace test {
 
 using ::android::sp;
-using ::std::string;
 using hidl::base::V1_0::DebugInfo;
+using ::std::string;
 
 class HidlBuf : public hidl_vec<uint8_t> {
-    typedef hidl_vec<uint8_t> super;
+    using super = hidl_vec<uint8_t>;
 
-   public:
+  public:
     HidlBuf() {}
     HidlBuf(const super& other) : super(other) {}
-    HidlBuf(super&& other) : super(std::move(other)) {}
+    HidlBuf(super&& other) : super(std::move(other)) { other = {}; }
+    HidlBuf(const HidlBuf& other) : super(other) {}
+    HidlBuf(HidlBuf&& other) : super(std::move(other)) { other = HidlBuf(); }
     explicit HidlBuf(const std::string& other) : HidlBuf() { *this = other; }
 
     HidlBuf& operator=(const super& other) {
@@ -54,6 +55,18 @@
 
     HidlBuf& operator=(super&& other) {
         super::operator=(std::move(other));
+        other = {};
+        return *this;
+    }
+
+    HidlBuf& operator=(const HidlBuf& other) {
+        super::operator=(other);
+        return *this;
+    }
+
+    HidlBuf& operator=(HidlBuf&& other) {
+        super::operator=(std::move(other));
+        other.super::operator=({});
         return *this;
     }
 
@@ -70,20 +83,16 @@
 
 class KeymasterHidlTest : public ::testing::TestWithParam<std::string> {
   public:
-    void SetUp();
+    void SetUp() override;
     void TearDown() override {
         if (key_blob_.size()) {
             CheckedDeleteKey();
         }
         AbortIfNeeded();
-        keymaster_.clear();
-        all_keymasters_.clear();
     }
 
-    void InitializeKeymaster();
-
+    void InitializeKeymaster(sp<IKeymasterDevice> keymaster);
     IKeymasterDevice& keymaster() { return *keymaster_; }
-    const std::vector<sp<IKeymasterDevice>>& all_keymasters() { return all_keymasters_; }
     uint32_t os_version() { return os_version_; }
     uint32_t os_patch_level() { return os_patch_level_; }
 
@@ -209,18 +218,26 @@
     KeyCharacteristics key_characteristics_;
     OperationHandle op_handle_ = kOpHandleSentinel;
 
-   private:
-     sp<IKeymasterDevice> keymaster_;
-     std::vector<sp<IKeymasterDevice>> all_keymasters_;
-     uint32_t os_version_;
-     uint32_t os_patch_level_;
+    static std::vector<std::string> build_params() {
+        auto params = android::hardware::getAllHalInstanceNames(IKeymasterDevice::descriptor);
+        return params;
+    }
 
-     SecurityLevel securityLevel_;
-     hidl_string name_;
-     hidl_string author_;
-     string service_name_;
+  private:
+    sp<IKeymasterDevice> keymaster_;
+    uint32_t os_version_;
+    uint32_t os_patch_level_;
+
+    SecurityLevel securityLevel_;
+    hidl_string name_;
+    hidl_string author_;
 };
 
+#define INSTANTIATE_KEYMASTER_HIDL_TEST(name)                                      \
+    INSTANTIATE_TEST_SUITE_P(PerInstance, name,                                    \
+                             testing::ValuesIn(KeymasterHidlTest::build_params()), \
+                             android::hardware::PrintInstanceNameToString)
+
 }  // namespace test
 }  // namespace V4_0
 }  // namespace keymaster
diff --git a/keymaster/4.0/vts/functional/VerificationTokenTest.cpp b/keymaster/4.0/vts/functional/VerificationTokenTest.cpp
index 693f4ae..bab1439 100644
--- a/keymaster/4.0/vts/functional/VerificationTokenTest.cpp
+++ b/keymaster/4.0/vts/functional/VerificationTokenTest.cpp
@@ -185,10 +185,7 @@
               memcmp(result1.token.mac.data(), result2.token.mac.data(), result1.token.mac.size()));
 }
 
-INSTANTIATE_TEST_SUITE_P(
-        PerInstance, VerificationTokenTest,
-        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IKeymasterDevice::descriptor)),
-        android::hardware::PrintInstanceNameToString);
+INSTANTIATE_KEYMASTER_HIDL_TEST(VerificationTokenTest);
 
 }  // namespace test
 }  // namespace V4_0
diff --git a/keymaster/4.0/vts/functional/keymaster_hidl_hal_test.cpp b/keymaster/4.0/vts/functional/keymaster_hidl_hal_test.cpp
index 66132ad..6cbe4da 100644
--- a/keymaster/4.0/vts/functional/keymaster_hidl_hal_test.cpp
+++ b/keymaster/4.0/vts/functional/keymaster_hidl_hal_test.cpp
@@ -352,11 +352,11 @@
     EXPECT_EQ(ErrorCode::OK, error);
     if (error != ErrorCode::OK) return false;
 
-    EXPECT_TRUE(att_attestation_version == 3);
+    EXPECT_GE(att_attestation_version, 3U);
 
     expected_sw_enforced.push_back(TAG_ATTESTATION_APPLICATION_ID, HidlBuf(app_id));
 
-    EXPECT_EQ(att_keymaster_version, 4U);
+    EXPECT_GE(att_keymaster_version, 4U);
     EXPECT_EQ(security_level, att_keymaster_security_level);
     EXPECT_EQ(security_level, att_attestation_security_level);
 
@@ -397,10 +397,16 @@
     // true. A provided boolean tag that can be pulled back out of the certificate indicates correct
     // encoding. No need to check if it's in both lists, since the AuthorizationSet compare below
     // will handle mismatches of tags.
-    EXPECT_TRUE(expected_hw_enforced.Contains(TAG_NO_AUTH_REQUIRED));
+    if (security_level == SecurityLevel::SOFTWARE) {
+        EXPECT_TRUE(expected_sw_enforced.Contains(TAG_NO_AUTH_REQUIRED));
+    } else {
+        EXPECT_TRUE(expected_hw_enforced.Contains(TAG_NO_AUTH_REQUIRED));
+    }
 
     // Alternatively this checks the opposite - a false boolean tag (one that isn't provided in
     // the authorization list during key generation) isn't being attested to in the certificate.
+    EXPECT_FALSE(expected_sw_enforced.Contains(TAG_TRUSTED_USER_PRESENCE_REQUIRED));
+    EXPECT_FALSE(att_sw_enforced.Contains(TAG_TRUSTED_USER_PRESENCE_REQUIRED));
     EXPECT_FALSE(expected_hw_enforced.Contains(TAG_TRUSTED_USER_PRESENCE_REQUIRED));
     EXPECT_FALSE(att_hw_enforced.Contains(TAG_TRUSTED_USER_PRESENCE_REQUIRED));
 
@@ -461,10 +467,10 @@
                             verified_boot_key.size()));
     } else if (!strcmp(property_value, "red")) {
         EXPECT_EQ(verified_boot_state, KM_VERIFIED_BOOT_FAILED);
-        EXPECT_EQ(0, memcmp(verified_boot_key.data(), empty_boot_key.data(),
-                            verified_boot_key.size()));
     } else {
-        EXPECT_TRUE(false);
+        EXPECT_EQ(verified_boot_state, KM_VERIFIED_BOOT_UNVERIFIED);
+        EXPECT_NE(0, memcmp(verified_boot_key.data(), empty_boot_key.data(),
+                            verified_boot_key.size()));
     }
 
     att_sw_enforced.Sort();
@@ -840,6 +846,8 @@
                               .Authorization(TAG_MIN_MAC_LENGTH, 128)));
 }
 
+INSTANTIATE_KEYMASTER_HIDL_TEST(NewKeyGenerationTest);
+
 typedef KeymasterHidlTest SigningOperationsTest;
 
 /*
@@ -1509,6 +1517,8 @@
     }
 }
 
+INSTANTIATE_KEYMASTER_HIDL_TEST(SigningOperationsTest);
+
 typedef KeymasterHidlTest VerificationOperationsTest;
 
 /*
@@ -1749,6 +1759,8 @@
     CheckedDeleteKey(&verification_key);
 }
 
+INSTANTIATE_KEYMASTER_HIDL_TEST(VerificationOperationsTest);
+
 typedef KeymasterHidlTest ExportKeyTest;
 
 /*
@@ -1828,6 +1840,8 @@
     EXPECT_EQ(ErrorCode::UNSUPPORTED_KEY_FORMAT, ExportKey(KeyFormat::RAW, &export_data));
 }
 
+INSTANTIATE_KEYMASTER_HIDL_TEST(ExportKeyTest);
+
 class ImportKeyTest : public KeymasterHidlTest {
    public:
     template <TagType tag_type, Tag tag, typename ValueT>
@@ -2093,6 +2107,8 @@
     VerifyMessage(message, signature, AuthorizationSetBuilder().Digest(Digest::SHA_2_256));
 }
 
+INSTANTIATE_KEYMASTER_HIDL_TEST(ImportKeyTest);
+
 auto wrapped_key = hex2str(
     "3082017902010004820100934bf94e2aa28a3f83c9f79297250262fbe3276b5a1c91159bbfa3ef8957aac84b59b30b"
     "455a79c2973480823d8b3863c3deef4a8e243590268d80e18751a0e130f67ce6a1ace9f79b95e097474febc981195b"
@@ -2214,6 +2230,8 @@
                       .Padding(PaddingMode::RSA_OAEP)));
 }
 
+INSTANTIATE_KEYMASTER_HIDL_TEST(ImportWrappedKeyTest);
+
 typedef KeymasterHidlTest EncryptionOperationsTest;
 
 /*
@@ -4111,6 +4129,8 @@
     EXPECT_EQ(message, plaintext);
 }
 
+INSTANTIATE_KEYMASTER_HIDL_TEST(EncryptionOperationsTest);
+
 typedef KeymasterHidlTest MaxOperationsTest;
 
 /*
@@ -4166,6 +4186,8 @@
     EXPECT_EQ(ErrorCode::KEY_MAX_OPS_EXCEEDED, Begin(KeyPurpose::SIGN, params));
 }
 
+INSTANTIATE_KEYMASTER_HIDL_TEST(MaxOperationsTest);
+
 typedef KeymasterHidlTest AddEntropyTest;
 
 /*
@@ -4196,6 +4218,8 @@
     EXPECT_EQ(ErrorCode::OK, keymaster().addRngEntropy(HidlBuf(string(2 * 1024, 'a'))));
 }
 
+INSTANTIATE_KEYMASTER_HIDL_TEST(AddEntropyTest);
+
 typedef KeymasterHidlTest AttestationTest;
 
 /*
@@ -4373,6 +4397,8 @@
                         &cert_chain));
 }
 
+INSTANTIATE_KEYMASTER_HIDL_TEST(AttestationTest);
+
 typedef KeymasterHidlTest KeyDeletionTest;
 
 /**
@@ -4478,6 +4504,8 @@
     }
 }
 
+INSTANTIATE_KEYMASTER_HIDL_TEST(KeyDeletionTest);
+
 using UpgradeKeyTest = KeymasterHidlTest;
 
 /*
@@ -4497,6 +4525,8 @@
     EXPECT_EQ(result, std::make_pair(ErrorCode::OK, HidlBuf()));
 }
 
+INSTANTIATE_KEYMASTER_HIDL_TEST(UpgradeKeyTest);
+
 using ClearOperationsTest = KeymasterHidlTest;
 
 /*
@@ -4533,51 +4563,14 @@
     AbortIfNeeded();
 }
 
-/*
- * ClearSlotsTest.ServiceDeath
- *
- * Verifies that the service is restarted after death and the ongoing
- * operations are cleared.
- */
-TEST_P(ClearOperationsTest, ServiceDeath) {
-    ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
-                                             .Authorization(TAG_NO_AUTH_REQUIRED)
-                                             .RsaEncryptionKey(2048, 65537)
-                                             .Padding(PaddingMode::NONE)));
-
-    auto params = AuthorizationSetBuilder().Padding(PaddingMode::NONE);
-    int max_operations = SecLevel() == SecurityLevel::STRONGBOX ? 4 : 16;
-    OperationHandle op_handles[max_operations];
-    AuthorizationSet out_params;
-    for(int i=0; i<max_operations; i++) {
-        EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::ENCRYPT, key_blob_, params, &out_params, &(op_handles[i])));
-    }
-    EXPECT_EQ(ErrorCode::TOO_MANY_OPERATIONS,
-         Begin(KeyPurpose::ENCRYPT, key_blob_, params, &out_params, &op_handle_));
-
-    DebugInfo debug_info;
-    GetDebugInfo(&debug_info);
-    kill(debug_info.pid, SIGKILL);
-    // wait 1 second for keymaster to restart
-    sleep(1);
-    InitializeKeymaster();
-
-    for(int i=0; i<max_operations; i++) {
-        EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::ENCRYPT, key_blob_, params, &out_params, &(op_handles[i])));
-    }
-    EXPECT_EQ(ErrorCode::TOO_MANY_OPERATIONS,
-         Begin(KeyPurpose::ENCRYPT, key_blob_, params, &out_params, &op_handle_));
-    for(int i=0; i<max_operations; i++) {
-        EXPECT_EQ(ErrorCode::OK, Abort(op_handles[i]));
-    }
-}
+INSTANTIATE_KEYMASTER_HIDL_TEST(ClearOperationsTest);
 
 typedef KeymasterHidlTest TransportLimitTest;
 
 /*
- * TransportLimitTest.LargeFinishInput
+ * TransportLimitTest.FinishInput
  *
- * Verifies that passing large input data to finish either succeeds or fails as expected.
+ * Verifies that passing input data to finish succeeds as expected.
  */
 TEST_P(TransportLimitTest, LargeFinishInput) {
     ASSERT_EQ(ErrorCode::OK, GenerateKey(AuthorizationSetBuilder()
@@ -4586,7 +4579,7 @@
                                                  .BlockMode(BlockMode::ECB)
                                                  .Padding(PaddingMode::NONE)));
 
-    for (int msg_size = 10 /*1KB*/; msg_size <= 17 /*128KB*/; msg_size++) {
+    for (int msg_size = 8 /* 256 bytes */; msg_size <= 11 /* 2 KiB */; msg_size++) {
         auto cipher_params =
                 AuthorizationSetBuilder().BlockMode(BlockMode::ECB).Padding(PaddingMode::NONE);
 
@@ -4597,71 +4590,22 @@
         string encrypted_message;
         auto rc = Finish(plain_message, &encrypted_message);
 
-        if (rc == ErrorCode::OK) {
-            EXPECT_EQ(plain_message.size(), encrypted_message.size())
-                    << "Encrypt finish returned OK, but did not consume all of the given input";
-        } else {
-            EXPECT_EQ(ErrorCode::INVALID_INPUT_LENGTH, rc)
-                    << "Encrypt finish failed in an unexpected way when given a large input";
-            continue;
-        }
+        EXPECT_EQ(ErrorCode::OK, rc);
+        EXPECT_EQ(plain_message.size(), encrypted_message.size())
+                << "Encrypt finish returned OK, but did not consume all of the given input";
         cipher_params.push_back(out_params);
 
         EXPECT_EQ(ErrorCode::OK, Begin(KeyPurpose::DECRYPT, cipher_params));
 
         string decrypted_message;
         rc = Finish(encrypted_message, &decrypted_message);
-
-        if (rc == ErrorCode::OK) {
-            EXPECT_EQ(plain_message.size(), decrypted_message.size())
-                    << "Decrypt finish returned OK, did not consume all of the given input";
-        } else {
-            EXPECT_EQ(ErrorCode::INVALID_INPUT_LENGTH, rc)
-                    << "Encrypt finish failed in an unexpected way when given a large input";
-        }
+        EXPECT_EQ(ErrorCode::OK, rc);
+        EXPECT_EQ(plain_message.size(), decrypted_message.size())
+                << "Decrypt finish returned OK, did not consume all of the given input";
     }
-
-    CheckedDeleteKey();
 }
 
-static const auto kKeymasterDeviceChoices =
-        testing::ValuesIn(android::hardware::getAllHalInstanceNames(IKeymasterDevice::descriptor));
-
-INSTANTIATE_TEST_SUITE_P(PerInstance, NewKeyGenerationTest, kKeymasterDeviceChoices,
-                         android::hardware::PrintInstanceNameToString);
-
-INSTANTIATE_TEST_SUITE_P(PerInstance, ImportKeyTest, kKeymasterDeviceChoices,
-                         android::hardware::PrintInstanceNameToString);
-
-INSTANTIATE_TEST_SUITE_P(PerInstance, ImportWrappedKeyTest, kKeymasterDeviceChoices,
-                         android::hardware::PrintInstanceNameToString);
-
-INSTANTIATE_TEST_SUITE_P(PerInstance, SigningOperationsTest, kKeymasterDeviceChoices,
-                         android::hardware::PrintInstanceNameToString);
-
-INSTANTIATE_TEST_SUITE_P(PerInstance, VerificationOperationsTest, kKeymasterDeviceChoices,
-                         android::hardware::PrintInstanceNameToString);
-
-INSTANTIATE_TEST_SUITE_P(PerInstance, ExportKeyTest, kKeymasterDeviceChoices,
-                         android::hardware::PrintInstanceNameToString);
-
-INSTANTIATE_TEST_SUITE_P(PerInstance, EncryptionOperationsTest, kKeymasterDeviceChoices,
-                         android::hardware::PrintInstanceNameToString);
-
-INSTANTIATE_TEST_SUITE_P(PerInstance, MaxOperationsTest, kKeymasterDeviceChoices,
-                         android::hardware::PrintInstanceNameToString);
-
-INSTANTIATE_TEST_SUITE_P(PerInstance, AddEntropyTest, kKeymasterDeviceChoices,
-                         android::hardware::PrintInstanceNameToString);
-
-INSTANTIATE_TEST_SUITE_P(PerInstance, AttestationTest, kKeymasterDeviceChoices,
-                         android::hardware::PrintInstanceNameToString);
-
-INSTANTIATE_TEST_SUITE_P(PerInstance, KeyDeletionTest, kKeymasterDeviceChoices,
-                         android::hardware::PrintInstanceNameToString);
-
-INSTANTIATE_TEST_SUITE_P(PerInstance, TransportLimitTest, kKeymasterDeviceChoices,
-                         android::hardware::PrintInstanceNameToString);
+INSTANTIATE_KEYMASTER_HIDL_TEST(TransportLimitTest);
 
 }  // namespace test
 }  // namespace V4_0
diff --git a/keymaster/4.1/default/Android.bp b/keymaster/4.1/default/Android.bp
index b06878b..27297b9 100644
--- a/keymaster/4.1/default/Android.bp
+++ b/keymaster/4.1/default/Android.bp
@@ -31,6 +31,7 @@
         "libhidlbase",
         "libkeymaster4",
         "libkeymaster41",
+        "libkeymaster4_1support",
         "liblog",
         "libutils",
     ],
diff --git a/keymaster/4.1/support/Android.bp b/keymaster/4.1/support/Android.bp
index 34b6108..bdd0ca8 100644
--- a/keymaster/4.1/support/Android.bp
+++ b/keymaster/4.1/support/Android.bp
@@ -22,11 +22,25 @@
         "-Wextra",
         "-Werror",
     ],
+    srcs: [
+        "attestation_record.cpp",
+        "Keymaster.cpp",
+        "Keymaster3.cpp",
+        "Keymaster4.cpp",
+    ],
     export_include_dirs: ["include"],
     shared_libs: [
         "android.hardware.keymaster@3.0",
         "android.hardware.keymaster@4.0",
         "android.hardware.keymaster@4.1",
+        "libbase",
+        "libcrypto",
+        "libhidlbase",
         "libkeymaster4support",
-    ]
+        "libutils",
+    ],
+    export_shared_lib_headers: [
+        "android.hardware.keymaster@4.1",
+        "libkeymaster4support",
+    ],
 }
diff --git a/keymaster/4.1/support/Keymaster.cpp b/keymaster/4.1/support/Keymaster.cpp
new file mode 100644
index 0000000..ea6604e
--- /dev/null
+++ b/keymaster/4.1/support/Keymaster.cpp
@@ -0,0 +1,197 @@
+/*
+ ** Copyright 2018, The Android Open Source Project
+ **
+ ** Licensed under the Apache License, Version 2.0 (the "License");
+ ** you may not use this file except in compliance with the License.
+ ** You may obtain a copy of the License at
+ **
+ **     http://www.apache.org/licenses/LICENSE-2.0
+ **
+ ** Unless required by applicable law or agreed to in writing, software
+ ** distributed under the License is distributed on an "AS IS" BASIS,
+ ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ ** See the License for the specific language governing permissions and
+ ** limitations under the License.
+ */
+
+#include <keymasterV4_1/Keymaster.h>
+
+#include <iomanip>
+
+#include <android-base/logging.h>
+#include <android/hidl/manager/1.2/IServiceManager.h>
+#include <keymasterV4_0/key_param_output.h>
+#include <keymasterV4_0/keymaster_utils.h>
+#include <keymasterV4_1/Keymaster3.h>
+#include <keymasterV4_1/Keymaster4.h>
+
+namespace android::hardware {
+
+template <class T>
+std::ostream& operator<<(std::ostream& os, const hidl_vec<T>& vec) {
+    os << "{ ";
+    if (vec.size()) {
+        for (size_t i = 0; i < vec.size() - 1; ++i) os << vec[i] << ", ";
+        os << vec[vec.size() - 1];
+    }
+    os << " }";
+    return os;
+}
+
+std::ostream& operator<<(std::ostream& os, const hidl_vec<uint8_t>& vec) {
+    std::ios_base::fmtflags flags(os.flags());
+    os << std::setw(2) << std::setfill('0') << std::hex;
+    for (uint8_t c : vec) os << static_cast<int>(c);
+    os.flags(flags);
+    return os;
+}
+
+template <size_t N>
+std::ostream& operator<<(std::ostream& os, const hidl_array<uint8_t, N>& vec) {
+    std::ios_base::fmtflags flags(os.flags());
+    os << std::setw(2) << std::setfill('0') << std::hex;
+    for (size_t i = 0; i < N; ++i) os << static_cast<int>(vec[i]);
+    os.flags(flags);
+    return os;
+}
+
+namespace keymaster {
+
+namespace V4_0 {
+
+std::ostream& operator<<(std::ostream& os, const HmacSharingParameters& params) {
+    // Note that by design, although seed and nonce are used to compute a secret, they are
+    // not secrets and it's just fine to log them.
+    os << "(seed: " << params.seed << ", nonce: " << params.nonce << ')';
+    return os;
+}
+
+}  // namespace V4_0
+
+namespace V4_1::support {
+
+using ::android::sp;
+using ::android::hidl::manager::V1_2::IServiceManager;
+
+std::ostream& operator<<(std::ostream& os, const Keymaster& keymaster) {
+    auto& version = keymaster.halVersion();
+    os << version.keymasterName << " from " << version.authorName
+       << " SecurityLevel: " << toString(version.securityLevel)
+       << " HAL: " << keymaster.descriptor() << "/" << keymaster.instanceName();
+    return os;
+}
+
+template <typename Wrapper>
+Keymaster::KeymasterSet enumerateDevices(const sp<IServiceManager>& serviceManager) {
+    Keymaster::KeymasterSet result;
+
+    bool foundDefault = false;
+    auto& descriptor = Wrapper::WrappedIKeymasterDevice::descriptor;
+    serviceManager->listManifestByInterface(descriptor, [&](const hidl_vec<hidl_string>& names) {
+        for (auto& name : names) {
+            if (name == "default") foundDefault = true;
+            auto device = Wrapper::WrappedIKeymasterDevice::getService(name);
+            CHECK(device) << "Failed to get service for " << descriptor << " with interface name "
+                          << name;
+            result.push_back(new Wrapper(device, name));
+        }
+    });
+
+    if (!foundDefault) {
+        // "default" wasn't provided by listManifestByInterface.  Maybe there's a passthrough
+        // implementation.
+        auto device = Wrapper::WrappedIKeymasterDevice::getService("default");
+        if (device) result.push_back(new Wrapper(device, "default"));
+    }
+
+    return result;
+}
+
+void Keymaster::logIfKeymasterVendorError(ErrorCode ec) const {
+    static constexpr int32_t k_keymaster_vendor_error_code_range_max = -10000;
+    if (static_cast<int32_t>(ec) <= k_keymaster_vendor_error_code_range_max) {
+        const auto& versionInfo = halVersion();
+        LOG(ERROR) << "Keymaster reported error: " << static_cast<int32_t>(ec) << "\n"
+                   << "NOTE: This is an error in the vendor specific error range.\n"
+                   << "      Refer to the vendor of the implementation for details.\n"
+                   << "      Implementation name: " << versionInfo.keymasterName << "\n"
+                   << "      Vendor name:         " << versionInfo.authorName << "\n"
+                   << "      MajorVersion:        " << versionInfo.majorVersion;
+    }
+}
+
+Keymaster::KeymasterSet Keymaster::enumerateAvailableDevices() {
+    auto serviceManager = IServiceManager::getService();
+    CHECK(serviceManager) << "Could not retrieve ServiceManager";
+
+    auto km4s = enumerateDevices<Keymaster4>(serviceManager);
+    auto km3s = enumerateDevices<Keymaster3>(serviceManager);
+
+    auto result = std::move(km4s);
+    result.insert(result.end(), std::make_move_iterator(km3s.begin()),
+                  std::make_move_iterator(km3s.end()));
+
+    std::sort(result.begin(), result.end(),
+              [](auto& a, auto& b) { return a->halVersion() > b->halVersion(); });
+
+    size_t i = 1;
+    LOG(INFO) << "List of Keymaster HALs found:";
+    for (auto& hal : result) LOG(INFO) << "Keymaster HAL #" << i++ << ": " << *hal;
+
+    return result;
+}
+
+static hidl_vec<HmacSharingParameters> getHmacParameters(
+        const Keymaster::KeymasterSet& keymasters) {
+    std::vector<HmacSharingParameters> params_vec;
+    params_vec.reserve(keymasters.size());
+    for (auto& keymaster : keymasters) {
+        if (keymaster->halVersion().majorVersion < 4) continue;
+        auto rc = keymaster->getHmacSharingParameters([&](auto error, auto& params) {
+            CHECK(error == V4_0::ErrorCode::OK)
+                    << "Failed to get HMAC parameters from " << *keymaster << " error " << error;
+            params_vec.push_back(params);
+        });
+        CHECK(rc.isOk()) << "Failed to communicate with " << *keymaster
+                         << " error: " << rc.description();
+    }
+    std::sort(params_vec.begin(), params_vec.end());
+
+    return params_vec;
+}
+
+static void computeHmac(const Keymaster::KeymasterSet& keymasters,
+                        const hidl_vec<HmacSharingParameters>& params) {
+    if (!params.size()) return;
+
+    hidl_vec<uint8_t> sharingCheck;
+    bool firstKeymaster = true;
+    LOG(DEBUG) << "Computing HMAC with params " << params;
+    for (auto& keymaster : keymasters) {
+        if (keymaster->halVersion().majorVersion < 4) continue;
+        LOG(DEBUG) << "Computing HMAC for " << *keymaster;
+        auto rc = keymaster->computeSharedHmac(
+                params, [&](V4_0::ErrorCode error, const hidl_vec<uint8_t>& curSharingCheck) {
+                    CHECK(error == V4_0::ErrorCode::OK) << "Failed to get HMAC parameters from "
+                                                        << *keymaster << " error " << error;
+                    if (firstKeymaster) {
+                        sharingCheck = curSharingCheck;
+                        firstKeymaster = false;
+                    }
+                    if (curSharingCheck != sharingCheck)
+                        LOG(WARNING) << "HMAC computation failed for " << *keymaster  //
+                                     << " Expected: " << sharingCheck                 //
+                                     << " got: " << curSharingCheck;
+                });
+        CHECK(rc.isOk()) << "Failed to communicate with " << *keymaster
+                         << " error: " << rc.description();
+    }
+}
+
+void Keymaster::performHmacKeyAgreement(const KeymasterSet& keymasters) {
+    computeHmac(keymasters, getHmacParameters(keymasters));
+}
+
+}  // namespace V4_1::support
+}  // namespace keymaster
+}  // namespace android::hardware
diff --git a/keymaster/4.1/support/Keymaster3.cpp b/keymaster/4.1/support/Keymaster3.cpp
new file mode 100644
index 0000000..b665689
--- /dev/null
+++ b/keymaster/4.1/support/Keymaster3.cpp
@@ -0,0 +1,286 @@
+/*
+ **
+ ** Copyright 2017, The Android Open Source Project
+ **
+ ** Licensed under the Apache License, Version 2.0 (the "License");
+ ** you may not use this file except in compliance with the License.
+ ** You may obtain a copy of the License at
+ **
+ **     http://www.apache.org/licenses/LICENSE-2.0
+ **
+ ** Unless required by applicable law or agreed to in writing, software
+ ** distributed under the License is distributed on an "AS IS" BASIS,
+ ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ ** See the License for the specific language governing permissions and
+ ** limitations under the License.
+ */
+
+#include <keymasterV4_1/Keymaster3.h>
+
+#include <android-base/logging.h>
+#include <keymasterV4_0/keymaster_utils.h>
+
+namespace android::hardware::keymaster::V4_1::support {
+
+using android::hardware::details::StatusOf;
+
+namespace {
+
+V4_0::ErrorCode convert(V3_0::ErrorCode error) {
+    return static_cast<V4_0::ErrorCode>(error);
+}
+
+V3_0::KeyPurpose convert(KeyPurpose purpose) {
+    return static_cast<V3_0::KeyPurpose>(purpose);
+}
+
+V3_0::KeyFormat convert(KeyFormat purpose) {
+    return static_cast<V3_0::KeyFormat>(purpose);
+}
+
+V3_0::KeyParameter convert(const KeyParameter& param) {
+    V3_0::KeyParameter converted;
+    converted.tag = static_cast<V3_0::Tag>(param.tag);
+    static_assert(sizeof(converted.f) == sizeof(param.f), "This function assumes sizes match");
+    memcpy(&converted.f, &param.f, sizeof(param.f));
+    converted.blob = param.blob;
+    return converted;
+}
+
+KeyParameter convert(const V3_0::KeyParameter& param) {
+    KeyParameter converted;
+    converted.tag = static_cast<V4_0::Tag>(param.tag);
+    static_assert(sizeof(converted.f) == sizeof(param.f), "This function assumes sizes match");
+    memcpy(&converted.f, &param.f, sizeof(param.f));
+    converted.blob = param.blob;
+    return converted;
+}
+
+hidl_vec<V3_0::KeyParameter> convert(const hidl_vec<KeyParameter>& params) {
+    hidl_vec<V3_0::KeyParameter> converted(params.size());
+    for (size_t i = 0; i < params.size(); ++i) {
+        converted[i] = convert(params[i]);
+    }
+    return converted;
+}
+
+hidl_vec<KeyParameter> convert(const hidl_vec<V3_0::KeyParameter>& params) {
+    hidl_vec<KeyParameter> converted(params.size());
+    for (size_t i = 0; i < params.size(); ++i) {
+        converted[i] = convert(params[i]);
+    }
+    return converted;
+}
+
+template <typename T, typename OutIter>
+inline static OutIter copy_bytes_to_iterator(const T& value, OutIter dest) {
+    const uint8_t* value_ptr = reinterpret_cast<const uint8_t*>(&value);
+    return std::copy(value_ptr, value_ptr + sizeof(value), dest);
+}
+
+hidl_vec<V3_0::KeyParameter> convertAndAddAuthToken(const hidl_vec<KeyParameter>& params,
+                                                    const HardwareAuthToken& authToken) {
+    hidl_vec<V3_0::KeyParameter> converted(params.size() + 1);
+    for (size_t i = 0; i < params.size(); ++i) {
+        converted[i] = convert(params[i]);
+    }
+    converted[params.size()].tag = V3_0::Tag::AUTH_TOKEN;
+    converted[params.size()].blob = V4_0::support::authToken2HidlVec(authToken);
+
+    return converted;
+}
+
+KeyCharacteristics convert(const V3_0::KeyCharacteristics& chars) {
+    KeyCharacteristics converted;
+    converted.hardwareEnforced = convert(chars.teeEnforced);
+    converted.softwareEnforced = convert(chars.softwareEnforced);
+    return converted;
+}
+
+}  // namespace
+
+void Keymaster3::getVersionIfNeeded() {
+    if (haveVersion_) return;
+
+    auto rc = km3_dev_->getHardwareFeatures(
+            [&](bool isSecure, bool supportsEllipticCurve, bool supportsSymmetricCryptography,
+                bool supportsAttestation, bool supportsAllDigests, const hidl_string& keymasterName,
+                const hidl_string& keymasterAuthorName) {
+                version_ = {keymasterName,
+                            keymasterAuthorName,
+                            0 /* major version, filled below */,
+                            0 /* minor version */,
+                            isSecure ? SecurityLevel::TRUSTED_ENVIRONMENT : SecurityLevel::SOFTWARE,
+                            supportsEllipticCurve};
+                supportsSymmetricCryptography_ = supportsSymmetricCryptography;
+                supportsAttestation_ = supportsAttestation;
+                supportsAllDigests_ = supportsAllDigests;
+            });
+
+    CHECK(rc.isOk()) << "Got error " << rc.description() << " trying to get hardware features";
+
+    if (version_.securityLevel == SecurityLevel::SOFTWARE) {
+        version_.majorVersion = 3;
+    } else if (supportsAttestation_) {
+        version_.majorVersion = 3;  // Could be 2, doesn't matter.
+    } else if (supportsSymmetricCryptography_) {
+        version_.majorVersion = 1;
+    } else {
+        version_.majorVersion = 0;
+    }
+}
+
+Return<void> Keymaster3::getHardwareInfo(Keymaster3::getHardwareInfo_cb _hidl_cb) {
+    getVersionIfNeeded();
+    _hidl_cb(version_.securityLevel,
+             std::string(version_.keymasterName) + " (wrapped by keystore::Keymaster3)",
+             version_.authorName);
+    return Void();
+}
+
+Return<V4_0::ErrorCode> Keymaster3::addRngEntropy(const hidl_vec<uint8_t>& data) {
+    auto rc = km3_dev_->addRngEntropy(data);
+    if (!rc.isOk()) {
+        return StatusOf<V3_0::ErrorCode, V4_0::ErrorCode>(rc);
+    }
+    return convert(rc);
+}
+
+Return<void> Keymaster3::generateKey(const hidl_vec<KeyParameter>& keyParams,
+                                     generateKey_cb _hidl_cb) {
+    auto cb = [&](V3_0::ErrorCode error, const hidl_vec<uint8_t>& keyBlob,
+                  const V3_0::KeyCharacteristics& characteristics) {
+        _hidl_cb(convert(error), keyBlob, convert(characteristics));
+    };
+    auto rc = km3_dev_->generateKey(convert(keyParams), cb);
+    rc.isOk();  // move ctor prereq
+    return rc;
+}
+
+Return<void> Keymaster3::getKeyCharacteristics(const hidl_vec<uint8_t>& keyBlob,
+                                               const hidl_vec<uint8_t>& clientId,
+                                               const hidl_vec<uint8_t>& appData,
+                                               getKeyCharacteristics_cb _hidl_cb) {
+    auto cb = [&](V3_0::ErrorCode error, const V3_0::KeyCharacteristics& chars) {
+        _hidl_cb(convert(error), convert(chars));
+    };
+
+    auto rc = km3_dev_->getKeyCharacteristics(keyBlob, clientId, appData, cb);
+    rc.isOk();  // move ctor prereq
+    return rc;
+}
+
+Return<void> Keymaster3::importKey(const hidl_vec<KeyParameter>& params, KeyFormat keyFormat,
+                                   const hidl_vec<uint8_t>& keyData, importKey_cb _hidl_cb) {
+    auto cb = [&](V3_0::ErrorCode error, const hidl_vec<uint8_t>& keyBlob,
+                  const V3_0::KeyCharacteristics& chars) {
+        _hidl_cb(convert(error), keyBlob, convert(chars));
+    };
+    auto rc = km3_dev_->importKey(convert(params), convert(keyFormat), keyData, cb);
+    rc.isOk();  // move ctor prereq
+    return rc;
+}
+
+Return<void> Keymaster3::exportKey(KeyFormat exportFormat, const hidl_vec<uint8_t>& keyBlob,
+                                   const hidl_vec<uint8_t>& clientId,
+                                   const hidl_vec<uint8_t>& appData, exportKey_cb _hidl_cb) {
+    auto cb = [&](V3_0::ErrorCode error, const hidl_vec<uint8_t>& keyMaterial) {
+        _hidl_cb(convert(error), keyMaterial);
+    };
+    auto rc = km3_dev_->exportKey(convert(exportFormat), keyBlob, clientId, appData, cb);
+    rc.isOk();  // move ctor prereq
+    return rc;
+}
+
+Return<void> Keymaster3::attestKey(const hidl_vec<uint8_t>& keyToAttest,
+                                   const hidl_vec<KeyParameter>& attestParams,
+                                   attestKey_cb _hidl_cb) {
+    auto cb = [&](V3_0::ErrorCode error, const hidl_vec<hidl_vec<uint8_t>>& certChain) {
+        _hidl_cb(convert(error), certChain);
+    };
+    auto rc = km3_dev_->attestKey(keyToAttest, convert(attestParams), cb);
+    rc.isOk();  // move ctor prereq
+    return rc;
+}
+
+Return<void> Keymaster3::upgradeKey(const hidl_vec<uint8_t>& keyBlobToUpgrade,
+                                    const hidl_vec<KeyParameter>& upgradeParams,
+                                    upgradeKey_cb _hidl_cb) {
+    auto cb = [&](V3_0::ErrorCode error, const hidl_vec<uint8_t>& upgradedKeyBlob) {
+        _hidl_cb(convert(error), upgradedKeyBlob);
+    };
+    auto rc = km3_dev_->upgradeKey(keyBlobToUpgrade, convert(upgradeParams), cb);
+    rc.isOk();  // move ctor prereq
+    return rc;
+}
+
+Return<V4_0::ErrorCode> Keymaster3::deleteKey(const hidl_vec<uint8_t>& keyBlob) {
+    auto rc = km3_dev_->deleteKey(keyBlob);
+    if (!rc.isOk()) return StatusOf<V3_0::ErrorCode, V4_0::ErrorCode>(rc);
+    return convert(rc);
+}
+
+Return<V4_0::ErrorCode> Keymaster3::deleteAllKeys() {
+    auto rc = km3_dev_->deleteAllKeys();
+    if (!rc.isOk()) return StatusOf<V3_0::ErrorCode, V4_0::ErrorCode>(rc);
+    return convert(rc);
+}
+
+Return<V4_0::ErrorCode> Keymaster3::destroyAttestationIds() {
+    auto rc = km3_dev_->destroyAttestationIds();
+    if (!rc.isOk()) return StatusOf<V3_0::ErrorCode, V4_0::ErrorCode>(rc);
+    return convert(rc);
+}
+
+Return<void> Keymaster3::begin(KeyPurpose purpose, const hidl_vec<uint8_t>& key,
+                               const hidl_vec<KeyParameter>& inParams,
+                               const HardwareAuthToken& authToken, begin_cb _hidl_cb) {
+    auto cb = [&](V3_0::ErrorCode error, const hidl_vec<V3_0::KeyParameter>& outParams,
+                  OperationHandle operationHandle) {
+        _hidl_cb(convert(error), convert(outParams), operationHandle);
+    };
+
+    auto rc =
+            km3_dev_->begin(convert(purpose), key, convertAndAddAuthToken(inParams, authToken), cb);
+    rc.isOk();  // move ctor prereq
+    return rc;
+}
+
+Return<void> Keymaster3::update(uint64_t operationHandle, const hidl_vec<KeyParameter>& inParams,
+                                const hidl_vec<uint8_t>& input, const HardwareAuthToken& authToken,
+                                const VerificationToken& /* verificationToken */,
+                                update_cb _hidl_cb) {
+    auto cb = [&](V3_0::ErrorCode error, uint32_t inputConsumed,
+                  const hidl_vec<V3_0::KeyParameter>& outParams, const hidl_vec<uint8_t>& output) {
+        _hidl_cb(convert(error), inputConsumed, convert(outParams), output);
+    };
+
+    auto rc = km3_dev_->update(operationHandle, convertAndAddAuthToken(inParams, authToken), input,
+                               cb);
+    rc.isOk();  // move ctor prereq
+    return rc;
+}
+
+Return<void> Keymaster3::finish(uint64_t operationHandle, const hidl_vec<KeyParameter>& inParams,
+                                const hidl_vec<uint8_t>& input, const hidl_vec<uint8_t>& signature,
+                                const HardwareAuthToken& authToken,
+                                const VerificationToken& /* verificationToken */,
+                                finish_cb _hidl_cb) {
+    auto cb = [&](V3_0::ErrorCode error, const hidl_vec<V3_0::KeyParameter>& outParams,
+                  const hidl_vec<uint8_t>& output) {
+        _hidl_cb(convert(error), convert(outParams), output);
+    };
+
+    auto rc = km3_dev_->finish(operationHandle, convertAndAddAuthToken(inParams, authToken), input,
+                               signature, cb);
+    rc.isOk();  // move ctor prereq
+    return rc;
+}
+
+Return<V4_0::ErrorCode> Keymaster3::abort(uint64_t operationHandle) {
+    auto rc = km3_dev_->abort(operationHandle);
+    if (!rc.isOk()) return StatusOf<V3_0::ErrorCode, V4_0::ErrorCode>(rc);
+    return convert(rc);
+}
+
+}  // namespace android::hardware::keymaster::V4_1::support
diff --git a/keymaster/4.1/support/Keymaster4.cpp b/keymaster/4.1/support/Keymaster4.cpp
new file mode 100644
index 0000000..33f4bb1
--- /dev/null
+++ b/keymaster/4.1/support/Keymaster4.cpp
@@ -0,0 +1,41 @@
+/*
+** Copyright 2017, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+
+#include <keymasterV4_1/Keymaster4.h>
+
+#include <android-base/logging.h>
+
+namespace android::hardware::keymaster::V4_1::support {
+
+void Keymaster4::getVersionIfNeeded() {
+    if (haveVersion_) return;
+
+    auto rc = km4_0_dev_->getHardwareInfo([&](SecurityLevel securityLevel,
+                                              const hidl_string& keymasterName,
+                                              const hidl_string& authorName) {
+        version_ = {keymasterName,
+                    authorName,
+                    4 /* major version */,
+                    static_cast<uint8_t>((km4_1_dev_) ? 1 : 0) /* minor version */,
+                    securityLevel,
+                    true /* supportsEc */};
+        haveVersion_ = true;
+    });
+
+    CHECK(rc.isOk()) << "Got error " << rc.description() << " trying to get hardware info";
+}
+
+}  // namespace android::hardware::keymaster::V4_1::support
diff --git a/keymaster/4.1/support/attestation_record.cpp b/keymaster/4.1/support/attestation_record.cpp
new file mode 100644
index 0000000..9eab1db
--- /dev/null
+++ b/keymaster/4.1/support/attestation_record.cpp
@@ -0,0 +1,387 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <keymasterV4_1/attestation_record.h>
+
+#include <android-base/logging.h>
+#include <assert.h>
+
+#include <openssl/asn1t.h>
+#include <openssl/bn.h>
+#include <openssl/evp.h>
+#include <openssl/x509.h>
+
+#include <keymasterV4_0/authorization_set.h>
+#include <keymasterV4_0/openssl_utils.h>
+
+#define AT __FILE__ ":" << __LINE__
+
+/*
+ * NOTE: The contents of this file are *extremely* similar to the contents of the V4_0 copy of the
+ * same support file.  Unfortunately, small changes in the scheme mean that the schema types have to
+ * be distinct, which drives almost everything else to be different as well.  In the next version we
+ * plan to abandon not just this openssl mechanism for parsing ASN.1, but ASN.1 entirely, so
+ * eventually all of this duplication can be removed.
+ */
+
+namespace android {
+namespace hardware {
+namespace keymaster {
+namespace V4_1 {
+
+struct stack_st_ASN1_TYPE_Delete {
+    void operator()(stack_st_ASN1_TYPE* p) { sk_ASN1_TYPE_free(p); }
+};
+
+struct ASN1_STRING_Delete {
+    void operator()(ASN1_STRING* p) { ASN1_STRING_free(p); }
+};
+
+struct ASN1_TYPE_Delete {
+    void operator()(ASN1_TYPE* p) { ASN1_TYPE_free(p); }
+};
+
+#define ASN1_INTEGER_SET STACK_OF(ASN1_INTEGER)
+
+typedef struct km_root_of_trust {
+    ASN1_OCTET_STRING* verified_boot_key;
+    ASN1_BOOLEAN* device_locked;
+    ASN1_ENUMERATED* verified_boot_state;
+    ASN1_OCTET_STRING* verified_boot_hash;
+} KM_ROOT_OF_TRUST;
+
+ASN1_SEQUENCE(KM_ROOT_OF_TRUST) = {
+        ASN1_SIMPLE(KM_ROOT_OF_TRUST, verified_boot_key, ASN1_OCTET_STRING),
+        ASN1_SIMPLE(KM_ROOT_OF_TRUST, device_locked, ASN1_BOOLEAN),
+        ASN1_SIMPLE(KM_ROOT_OF_TRUST, verified_boot_state, ASN1_ENUMERATED),
+        ASN1_SIMPLE(KM_ROOT_OF_TRUST, verified_boot_hash, ASN1_OCTET_STRING),
+} ASN1_SEQUENCE_END(KM_ROOT_OF_TRUST);
+IMPLEMENT_ASN1_FUNCTIONS(KM_ROOT_OF_TRUST);
+
+typedef struct km_auth_list {
+    ASN1_INTEGER_SET* purpose;
+    ASN1_INTEGER* algorithm;
+    ASN1_INTEGER* key_size;
+    ASN1_INTEGER_SET* digest;
+    ASN1_INTEGER_SET* padding;
+    ASN1_INTEGER* ec_curve;
+    ASN1_INTEGER* rsa_public_exponent;
+    ASN1_INTEGER* active_date_time;
+    ASN1_INTEGER* origination_expire_date_time;
+    ASN1_INTEGER* usage_expire_date_time;
+    ASN1_NULL* no_auth_required;
+    ASN1_INTEGER* user_auth_type;
+    ASN1_INTEGER* auth_timeout;
+    ASN1_NULL* allow_while_on_body;
+    ASN1_NULL* all_applications;
+    ASN1_OCTET_STRING* application_id;
+    ASN1_INTEGER* creation_date_time;
+    ASN1_INTEGER* origin;
+    ASN1_NULL* rollback_resistance;
+    KM_ROOT_OF_TRUST* root_of_trust;
+    ASN1_INTEGER* os_version;
+    ASN1_INTEGER* os_patchlevel;
+    ASN1_OCTET_STRING* attestation_application_id;
+    ASN1_NULL* trusted_user_presence_required;
+    ASN1_NULL* trusted_confirmation_required;
+    ASN1_NULL* unlocked_device_required;
+    ASN1_INTEGER* vendor_patchlevel;
+    ASN1_INTEGER* boot_patchlevel;
+    ASN1_NULL* early_boot_only;
+    ASN1_NULL* device_unique_attestation;
+} KM_AUTH_LIST;
+
+ASN1_SEQUENCE(KM_AUTH_LIST) = {
+        ASN1_EXP_SET_OF_OPT(KM_AUTH_LIST, purpose, ASN1_INTEGER, TAG_PURPOSE.maskedTag()),
+        ASN1_EXP_OPT(KM_AUTH_LIST, algorithm, ASN1_INTEGER, TAG_ALGORITHM.maskedTag()),
+        ASN1_EXP_OPT(KM_AUTH_LIST, key_size, ASN1_INTEGER, TAG_KEY_SIZE.maskedTag()),
+        ASN1_EXP_SET_OF_OPT(KM_AUTH_LIST, digest, ASN1_INTEGER, TAG_DIGEST.maskedTag()),
+        ASN1_EXP_SET_OF_OPT(KM_AUTH_LIST, padding, ASN1_INTEGER, TAG_PADDING.maskedTag()),
+        ASN1_EXP_OPT(KM_AUTH_LIST, ec_curve, ASN1_INTEGER, TAG_EC_CURVE.maskedTag()),
+        ASN1_EXP_OPT(KM_AUTH_LIST, rsa_public_exponent, ASN1_INTEGER,
+                     TAG_RSA_PUBLIC_EXPONENT.maskedTag()),
+        ASN1_EXP_OPT(KM_AUTH_LIST, rollback_resistance, ASN1_NULL,
+                     TAG_ROLLBACK_RESISTANCE.maskedTag()),
+        ASN1_EXP_OPT(KM_AUTH_LIST, active_date_time, ASN1_INTEGER, TAG_ACTIVE_DATETIME.maskedTag()),
+        ASN1_EXP_OPT(KM_AUTH_LIST, origination_expire_date_time, ASN1_INTEGER,
+                     TAG_ORIGINATION_EXPIRE_DATETIME.maskedTag()),
+        ASN1_EXP_OPT(KM_AUTH_LIST, usage_expire_date_time, ASN1_INTEGER,
+                     TAG_USAGE_EXPIRE_DATETIME.maskedTag()),
+        ASN1_EXP_OPT(KM_AUTH_LIST, no_auth_required, ASN1_NULL, TAG_NO_AUTH_REQUIRED.maskedTag()),
+        ASN1_EXP_OPT(KM_AUTH_LIST, user_auth_type, ASN1_INTEGER, TAG_USER_AUTH_TYPE.maskedTag()),
+        ASN1_EXP_OPT(KM_AUTH_LIST, auth_timeout, ASN1_INTEGER, TAG_AUTH_TIMEOUT.maskedTag()),
+        ASN1_EXP_OPT(KM_AUTH_LIST, allow_while_on_body, ASN1_NULL,
+                     TAG_ALLOW_WHILE_ON_BODY.maskedTag()),
+        ASN1_EXP_OPT(KM_AUTH_LIST, trusted_user_presence_required, ASN1_NULL,
+                     TAG_TRUSTED_USER_PRESENCE_REQUIRED.maskedTag()),
+        ASN1_EXP_OPT(KM_AUTH_LIST, trusted_confirmation_required, ASN1_NULL,
+                     TAG_TRUSTED_CONFIRMATION_REQUIRED.maskedTag()),
+        ASN1_EXP_OPT(KM_AUTH_LIST, unlocked_device_required, ASN1_NULL,
+                     TAG_UNLOCKED_DEVICE_REQUIRED.maskedTag()),
+        ASN1_EXP_OPT(KM_AUTH_LIST, creation_date_time, ASN1_INTEGER,
+                     TAG_CREATION_DATETIME.maskedTag()),
+        ASN1_EXP_OPT(KM_AUTH_LIST, origin, ASN1_INTEGER, TAG_ORIGIN.maskedTag()),
+        ASN1_EXP_OPT(KM_AUTH_LIST, root_of_trust, KM_ROOT_OF_TRUST, TAG_ROOT_OF_TRUST.maskedTag()),
+        ASN1_EXP_OPT(KM_AUTH_LIST, os_version, ASN1_INTEGER, TAG_OS_VERSION.maskedTag()),
+        ASN1_EXP_OPT(KM_AUTH_LIST, os_patchlevel, ASN1_INTEGER, TAG_OS_PATCHLEVEL.maskedTag()),
+        ASN1_EXP_OPT(KM_AUTH_LIST, vendor_patchlevel, ASN1_INTEGER,
+                     TAG_VENDOR_PATCHLEVEL.maskedTag()),
+        ASN1_EXP_OPT(KM_AUTH_LIST, boot_patchlevel, ASN1_INTEGER, TAG_BOOT_PATCHLEVEL.maskedTag()),
+        ASN1_EXP_OPT(KM_AUTH_LIST, attestation_application_id, ASN1_OCTET_STRING,
+                     TAG_ATTESTATION_APPLICATION_ID.maskedTag()),
+        ASN1_EXP_OPT(KM_AUTH_LIST, early_boot_only, ASN1_NULL, TAG_EARLY_BOOT_ONLY.maskedTag()),
+        ASN1_EXP_OPT(KM_AUTH_LIST, device_unique_attestation, ASN1_NULL,
+                     TAG_DEVICE_UNIQUE_ATTESTATION.maskedTag()),
+} ASN1_SEQUENCE_END(KM_AUTH_LIST);
+IMPLEMENT_ASN1_FUNCTIONS(KM_AUTH_LIST);
+
+typedef struct km_key_description {
+    ASN1_INTEGER* attestation_version;
+    ASN1_ENUMERATED* attestation_security_level;
+    ASN1_INTEGER* keymaster_version;
+    ASN1_ENUMERATED* keymaster_security_level;
+    ASN1_OCTET_STRING* attestation_challenge;
+    KM_AUTH_LIST* software_enforced;
+    KM_AUTH_LIST* tee_enforced;
+    ASN1_INTEGER* unique_id;
+} KM_KEY_DESCRIPTION;
+
+ASN1_SEQUENCE(KM_KEY_DESCRIPTION) = {
+        ASN1_SIMPLE(KM_KEY_DESCRIPTION, attestation_version, ASN1_INTEGER),
+        ASN1_SIMPLE(KM_KEY_DESCRIPTION, attestation_security_level, ASN1_ENUMERATED),
+        ASN1_SIMPLE(KM_KEY_DESCRIPTION, keymaster_version, ASN1_INTEGER),
+        ASN1_SIMPLE(KM_KEY_DESCRIPTION, keymaster_security_level, ASN1_ENUMERATED),
+        ASN1_SIMPLE(KM_KEY_DESCRIPTION, attestation_challenge, ASN1_OCTET_STRING),
+        ASN1_SIMPLE(KM_KEY_DESCRIPTION, unique_id, ASN1_OCTET_STRING),
+        ASN1_SIMPLE(KM_KEY_DESCRIPTION, software_enforced, KM_AUTH_LIST),
+        ASN1_SIMPLE(KM_KEY_DESCRIPTION, tee_enforced, KM_AUTH_LIST),
+} ASN1_SEQUENCE_END(KM_KEY_DESCRIPTION);
+IMPLEMENT_ASN1_FUNCTIONS(KM_KEY_DESCRIPTION);
+
+template <V4_0::Tag tag>
+void copyAuthTag(const stack_st_ASN1_INTEGER* stack, TypedTag<TagType::ENUM_REP, tag> ttag,
+                 AuthorizationSet* auth_list) {
+    typedef typename V4_0::TypedTag2ValueType<decltype(ttag)>::type ValueT;
+    for (size_t i = 0; i < sk_ASN1_INTEGER_num(stack); ++i) {
+        auth_list->push_back(
+                ttag, static_cast<ValueT>(ASN1_INTEGER_get(sk_ASN1_INTEGER_value(stack, i))));
+    }
+}
+
+template <V4_0::Tag tag>
+void copyAuthTag(const ASN1_INTEGER* asn1_int, TypedTag<TagType::ENUM, tag> ttag,
+                 AuthorizationSet* auth_list) {
+    typedef typename V4_0::TypedTag2ValueType<decltype(ttag)>::type ValueT;
+    if (!asn1_int) return;
+    auth_list->push_back(ttag, static_cast<ValueT>(ASN1_INTEGER_get(asn1_int)));
+}
+
+template <V4_0::Tag tag>
+void copyAuthTag(const ASN1_INTEGER* asn1_int, TypedTag<TagType::UINT, tag> ttag,
+                 AuthorizationSet* auth_list) {
+    if (!asn1_int) return;
+    auth_list->push_back(ttag, ASN1_INTEGER_get(asn1_int));
+}
+
+BIGNUM* construct_uint_max() {
+    BIGNUM* value = BN_new();
+    BIGNUM_Ptr one(BN_new());
+    BN_one(one.get());
+    BN_lshift(value, one.get(), 32);
+    return value;
+}
+
+uint64_t BignumToUint64(BIGNUM* num) {
+    static_assert((sizeof(BN_ULONG) == sizeof(uint32_t)) || (sizeof(BN_ULONG) == sizeof(uint64_t)),
+                  "This implementation only supports 32 and 64-bit BN_ULONG");
+    if (sizeof(BN_ULONG) == sizeof(uint32_t)) {
+        BIGNUM_Ptr uint_max(construct_uint_max());
+        BIGNUM_Ptr hi(BN_new()), lo(BN_new());
+        BN_CTX_Ptr ctx(BN_CTX_new());
+        BN_div(hi.get(), lo.get(), num, uint_max.get(), ctx.get());
+        return static_cast<uint64_t>(BN_get_word(hi.get())) << 32 | BN_get_word(lo.get());
+    } else if (sizeof(BN_ULONG) == sizeof(uint64_t)) {
+        return BN_get_word(num);
+    } else {
+        return 0;
+    }
+}
+
+template <V4_0::Tag tag>
+void copyAuthTag(const ASN1_INTEGER* asn1_int, TypedTag<TagType::ULONG, tag> ttag,
+                 AuthorizationSet* auth_list) {
+    if (!asn1_int) return;
+    BIGNUM_Ptr num(ASN1_INTEGER_to_BN(asn1_int, nullptr));
+    auth_list->push_back(ttag, BignumToUint64(num.get()));
+}
+
+template <V4_0::Tag tag>
+void copyAuthTag(const ASN1_INTEGER* asn1_int, TypedTag<TagType::DATE, tag> ttag,
+                 AuthorizationSet* auth_list) {
+    if (!asn1_int) return;
+    BIGNUM_Ptr num(ASN1_INTEGER_to_BN(asn1_int, nullptr));
+    auth_list->push_back(ttag, BignumToUint64(num.get()));
+}
+
+template <V4_0::Tag tag>
+void copyAuthTag(const ASN1_NULL* asn1_null, TypedTag<TagType::BOOL, tag> ttag,
+                 AuthorizationSet* auth_list) {
+    if (!asn1_null) return;
+    auth_list->push_back(ttag);
+}
+
+template <V4_0::Tag tag>
+void copyAuthTag(const ASN1_OCTET_STRING* asn1_string, TypedTag<TagType::BYTES, tag> ttag,
+                 AuthorizationSet* auth_list) {
+    if (!asn1_string) return;
+    hidl_vec<uint8_t> buf;
+    buf.setToExternal(asn1_string->data, asn1_string->length);
+    auth_list->push_back(ttag, buf);
+}
+
+// Extract the values from the specified ASN.1 record and place them in auth_list.
+static ErrorCode extract_auth_list(const KM_AUTH_LIST* record, AuthorizationSet* auth_list) {
+    if (!record) return ErrorCode::OK;
+
+    copyAuthTag(record->active_date_time, TAG_ACTIVE_DATETIME, auth_list);
+    copyAuthTag(record->algorithm, TAG_ALGORITHM, auth_list);
+    copyAuthTag(record->application_id, TAG_APPLICATION_ID, auth_list);
+    copyAuthTag(record->auth_timeout, TAG_AUTH_TIMEOUT, auth_list);
+    copyAuthTag(record->creation_date_time, TAG_CREATION_DATETIME, auth_list);
+    copyAuthTag(record->digest, TAG_DIGEST, auth_list);
+    copyAuthTag(record->ec_curve, TAG_EC_CURVE, auth_list);
+    copyAuthTag(record->key_size, TAG_KEY_SIZE, auth_list);
+    copyAuthTag(record->no_auth_required, TAG_NO_AUTH_REQUIRED, auth_list);
+    copyAuthTag(record->origin, TAG_ORIGIN, auth_list);
+    copyAuthTag(record->origination_expire_date_time, TAG_ORIGINATION_EXPIRE_DATETIME, auth_list);
+    copyAuthTag(record->os_patchlevel, TAG_OS_PATCHLEVEL, auth_list);
+    copyAuthTag(record->os_version, TAG_OS_VERSION, auth_list);
+    copyAuthTag(record->padding, TAG_PADDING, auth_list);
+    copyAuthTag(record->purpose, TAG_PURPOSE, auth_list);
+    copyAuthTag(record->rollback_resistance, TAG_ROLLBACK_RESISTANCE, auth_list);
+    copyAuthTag(record->rsa_public_exponent, TAG_RSA_PUBLIC_EXPONENT, auth_list);
+    copyAuthTag(record->usage_expire_date_time, TAG_USAGE_EXPIRE_DATETIME, auth_list);
+    copyAuthTag(record->user_auth_type, TAG_USER_AUTH_TYPE, auth_list);
+    copyAuthTag(record->attestation_application_id, TAG_ATTESTATION_APPLICATION_ID, auth_list);
+    copyAuthTag(record->vendor_patchlevel, TAG_VENDOR_PATCHLEVEL, auth_list);
+    copyAuthTag(record->boot_patchlevel, TAG_BOOT_PATCHLEVEL, auth_list);
+    copyAuthTag(record->trusted_user_presence_required, TAG_TRUSTED_USER_PRESENCE_REQUIRED,
+                auth_list);
+    copyAuthTag(record->trusted_confirmation_required, TAG_TRUSTED_CONFIRMATION_REQUIRED,
+                auth_list);
+    copyAuthTag(record->unlocked_device_required, TAG_UNLOCKED_DEVICE_REQUIRED, auth_list);
+    copyAuthTag(record->early_boot_only, TAG_EARLY_BOOT_ONLY, auth_list);
+    copyAuthTag(record->device_unique_attestation, TAG_DEVICE_UNIQUE_ATTESTATION, auth_list);
+
+    return ErrorCode::OK;
+}
+
+MAKE_OPENSSL_PTR_TYPE(KM_KEY_DESCRIPTION)
+
+// Parse the DER-encoded attestation record, placing the results in keymaster_version,
+// attestation_challenge, software_enforced, tee_enforced and unique_id.
+std::tuple<ErrorCode, AttestationRecord> parse_attestation_record(const hidl_vec<uint8_t>& cert) {
+    const uint8_t* p = cert.data();
+    X509_Ptr x509(d2i_X509(nullptr, &p, cert.size()));
+
+    ASN1_OBJECT_Ptr oid(OBJ_txt2obj(kAttestionRecordOid, 1 /* dotted string format */));
+    if (!oid.get()) {
+        LOG(ERROR) << "Error parsing OID";
+        return {ErrorCode::UNKNOWN_ERROR, {}};
+    }
+
+    int location = X509_get_ext_by_OBJ(x509.get(), oid.get(), -1 /* search from beginning */);
+    if (location == -1) {
+        LOG(ERROR) << "Attestation extension not found in certificate";
+        return {ErrorCode::UNKNOWN_ERROR, {}};
+    }
+
+    X509_EXTENSION* attest_rec_ext = X509_get_ext(x509.get(), location);
+    if (!attest_rec_ext) {
+        LOG(ERROR) << "Found extension but couldn't retrieve it.  Probably BoringSSL bug.";
+        return {ErrorCode::UNKNOWN_ERROR, {}};
+    }
+
+    ASN1_OCTET_STRING* attest_rec = X509_EXTENSION_get_data(attest_rec_ext);
+    if (!attest_rec_ext) {
+        LOG(ERROR) << "Attestation extension contained no data";
+        return {ErrorCode::UNKNOWN_ERROR, {}};
+    }
+
+    p = attest_rec->data;
+    KM_KEY_DESCRIPTION_Ptr record(d2i_KM_KEY_DESCRIPTION(nullptr, &p, attest_rec->length));
+    if (!record.get()) return {ErrorCode::UNKNOWN_ERROR, {}};
+
+    AttestationRecord result;
+
+    result.attestation_version = ASN1_INTEGER_get(record->attestation_version);
+    result.attestation_security_level =
+            static_cast<SecurityLevel>(ASN1_ENUMERATED_get(record->attestation_security_level));
+    result.keymaster_version = ASN1_INTEGER_get(record->keymaster_version);
+    result.keymaster_security_level =
+            static_cast<SecurityLevel>(ASN1_ENUMERATED_get(record->keymaster_security_level));
+
+    auto& chall = record->attestation_challenge;
+    result.attestation_challenge.resize(chall->length);
+    memcpy(result.attestation_challenge.data(), chall->data, chall->length);
+    auto& uid = record->unique_id;
+    result.unique_id.resize(uid->length);
+    memcpy(result.unique_id.data(), uid->data, uid->length);
+
+    ErrorCode error = extract_auth_list(record->software_enforced, &result.software_enforced);
+    if (error != ErrorCode::OK) return {error, {}};
+
+    error = extract_auth_list(record->tee_enforced, &result.hardware_enforced);
+    if (error != ErrorCode::OK) return {error, {}};
+
+    KM_ROOT_OF_TRUST* root_of_trust = nullptr;
+    if (record->tee_enforced && record->tee_enforced->root_of_trust) {
+        root_of_trust = record->tee_enforced->root_of_trust;
+    } else if (record->software_enforced && record->software_enforced->root_of_trust) {
+        root_of_trust = record->software_enforced->root_of_trust;
+    } else {
+        LOG(ERROR) << AT << " Failed root of trust parsing";
+        return {ErrorCode::INVALID_ARGUMENT, {}};
+    }
+    if (!root_of_trust->verified_boot_key) {
+        LOG(ERROR) << AT << " Failed verified boot key parsing";
+        return {ErrorCode::INVALID_ARGUMENT, {}};
+    }
+
+    RootOfTrust& rot = result.root_of_trust;
+    auto& vb_key = root_of_trust->verified_boot_key;
+    rot.verified_boot_key.resize(vb_key->length);
+    memcpy(rot.verified_boot_key.data(), vb_key->data, vb_key->length);
+
+    rot.verified_boot_state = static_cast<keymaster_verified_boot_t>(
+            ASN1_ENUMERATED_get(root_of_trust->verified_boot_state));
+    rot.device_locked = root_of_trust->device_locked;
+
+    auto& vb_hash = root_of_trust->verified_boot_hash;
+    if (!vb_hash) {
+        LOG(ERROR) << AT << " Failed verified boot hash parsing";
+        return {ErrorCode::INVALID_ARGUMENT, {}};
+    }
+    rot.verified_boot_hash.resize(vb_hash->length);
+    memcpy(rot.verified_boot_hash.data(), vb_hash->data, vb_hash->length);
+
+    return {ErrorCode::OK, result};
+}
+
+}  // namespace V4_1
+}  // namespace keymaster
+}  // namespace hardware
+}  // namespace android
diff --git a/keymaster/4.1/support/include/keymasterV4_1/Keymaster.h b/keymaster/4.1/support/include/keymasterV4_1/Keymaster.h
new file mode 100644
index 0000000..1f49e18
--- /dev/null
+++ b/keymaster/4.1/support/include/keymasterV4_1/Keymaster.h
@@ -0,0 +1,101 @@
+/*
+ **
+ ** Copyright 2017, The Android Open Source Project
+ **
+ ** Licensed under the Apache License, Version 2.0 (the "License");
+ ** you may not use this file except in compliance with the License.
+ ** You may obtain a copy of the License at
+ **
+ **     http://www.apache.org/licenses/LICENSE-2.0
+ **
+ ** Unless required by applicable law or agreed to in writing, software
+ ** distributed under the License is distributed on an "AS IS" BASIS,
+ ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ ** See the License for the specific language governing permissions and
+ ** limitations under the License.
+ */
+
+#pragma once
+
+#include <memory>
+#include <vector>
+
+#include <android/hardware/keymaster/4.1/IKeymasterDevice.h>
+#include <keymasterV4_1/keymaster_tags.h>
+
+namespace android::hardware::keymaster::V4_1::support {
+
+/**
+ * Keymaster abstracts the underlying V4_1::IKeymasterDevice.  There are two implementations,
+ * Keymaster3 which wraps a V3_0::IKeymasterDevice and Keymaster4, which wraps either a
+ * V4_0::IKeymasterDevice or a V4_1::IKeymasterDevice.  There is a V3_0::IKeymasterDevice
+ * implementation that is used to wrap pre-HIDL keymaster implementations, and Keymaster3 will wrap
+ * that.
+ *
+ * The reason for adding this additional layer, rather than simply using the latest HAL directly and
+ * subclassing it to wrap any older HAL, is because this provides a place to put additional methods
+ * which clients can use when they need to distinguish between different underlying HAL versions,
+ * while still having to use only the latest interface.  Plus it's a handy place to keep some
+ * convenience methods.
+ */
+class Keymaster : public IKeymasterDevice {
+  public:
+    using KeymasterSet = std::vector<android::sp<Keymaster>>;
+
+    Keymaster(const hidl_string& descriptor, const hidl_string& instanceName)
+        : descriptor_(descriptor), instanceName_(instanceName) {}
+    virtual ~Keymaster() {}
+
+    struct VersionResult {
+        hidl_string keymasterName;
+        hidl_string authorName;
+        uint8_t majorVersion;
+        uint8_t minorVersion;
+        SecurityLevel securityLevel;
+        bool supportsEc;
+
+        bool operator>(const VersionResult& other) const {
+            auto lhs = std::tie(securityLevel, majorVersion, minorVersion, supportsEc);
+            auto rhs = std::tie(other.securityLevel, other.majorVersion, other.minorVersion,
+                                other.supportsEc);
+            return lhs > rhs;
+        }
+    };
+
+    virtual const VersionResult& halVersion() const = 0;
+    const hidl_string& descriptor() const { return descriptor_; }
+    const hidl_string& instanceName() const { return instanceName_; }
+
+    /**
+     * If ec is in the vendor error code range (<-10000), logs the fact to logcat.
+     * There are no side effects otherwise.
+     */
+    void logIfKeymasterVendorError(ErrorCode ec) const;
+    void logIfKeymasterVendorError(V4_0::ErrorCode ec) const {
+        logIfKeymasterVendorError(static_cast<ErrorCode>(ec));
+    }
+
+    /**
+     * Returns all available Keymaster3 and Keymaster4 instances, in order of most secure to least
+     * secure (as defined by VersionResult::operator<).
+     */
+    static KeymasterSet enumerateAvailableDevices();
+
+    /**
+     * Ask provided Keymaster instances to compute a shared HMAC key using
+     * getHmacSharingParameters() and computeSharedHmac().  This computation is idempotent as long
+     * as the same set of Keymaster instances is used each time (and if all of the instances work
+     * correctly).  It must be performed once per boot, but should do no harm to be repeated.
+     *
+     * If key agreement fails, this method will crash the process (with CHECK).
+     */
+    static void performHmacKeyAgreement(const KeymasterSet& keymasters);
+
+  private:
+    hidl_string descriptor_;
+    hidl_string instanceName_;
+};
+
+std::ostream& operator<<(std::ostream& os, const Keymaster& keymaster);
+
+}  // namespace android::hardware::keymaster::V4_1::support
diff --git a/keymaster/4.1/support/include/keymasterV4_1/Keymaster3.h b/keymaster/4.1/support/include/keymasterV4_1/Keymaster3.h
new file mode 100644
index 0000000..c201e8c
--- /dev/null
+++ b/keymaster/4.1/support/include/keymasterV4_1/Keymaster3.h
@@ -0,0 +1,148 @@
+/*
+ ** Copyright 2017, The Android Open Source Project
+ **
+ ** Licensed under the Apache License, Version 2.0 (the "License");
+ ** you may not use this file except in compliance with the License.
+ ** You may obtain a copy of the License at
+ **
+ **     http://www.apache.org/licenses/LICENSE-2.0
+ **
+ ** Unless required by applicable law or agreed to in writing, software
+ ** distributed under the License is distributed on an "AS IS" BASIS,
+ ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ ** See the License for the specific language governing permissions and
+ ** limitations under the License.
+ */
+
+#pragma once
+
+#include <android/hardware/keymaster/3.0/IKeymasterDevice.h>
+
+#include "Keymaster.h"
+#include "Operation.h"
+
+namespace android::hardware::keymaster::V4_1::support {
+
+using IKeymaster3Device = ::android::hardware::keymaster::V3_0::IKeymasterDevice;
+
+using ::android::sp;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::details::return_status;
+
+class Keymaster3 : public Keymaster {
+  public:
+    // This definition is used for device enumeration.
+    using WrappedIKeymasterDevice = IKeymaster3Device;
+
+    Keymaster3(sp<IKeymaster3Device> km3_dev, const hidl_string& instanceName)
+        : Keymaster(IKeymaster3Device::descriptor, instanceName),
+          km3_dev_(km3_dev),
+          haveVersion_(false) {}
+
+    const VersionResult& halVersion() const override {
+        const_cast<Keymaster3*>(this)->getVersionIfNeeded();
+        return version_;
+    }
+
+    Return<void> getHardwareInfo(getHardwareInfo_cb _hidl_cb);
+
+    Return<void> getHmacSharingParameters(getHmacSharingParameters_cb _hidl_cb) override {
+        _hidl_cb(V4_0::ErrorCode::UNIMPLEMENTED, {});
+        return Void();
+    }
+
+    Return<void> computeSharedHmac(const hidl_vec<HmacSharingParameters>&,
+                                   computeSharedHmac_cb _hidl_cb) override {
+        _hidl_cb(V4_0::ErrorCode::UNIMPLEMENTED, {});
+        return Void();
+    }
+
+    Return<void> verifyAuthorization(uint64_t, const hidl_vec<KeyParameter>&,
+                                     const HardwareAuthToken&,
+                                     verifyAuthorization_cb _hidl_cb) override {
+        _hidl_cb(V4_0::ErrorCode::UNIMPLEMENTED, {});
+        return Void();
+    }
+
+    Return<V4_0::ErrorCode> addRngEntropy(const hidl_vec<uint8_t>& data) override;
+    Return<void> generateKey(const hidl_vec<KeyParameter>& keyParams,
+                             generateKey_cb _hidl_cb) override;
+    Return<void> getKeyCharacteristics(const hidl_vec<uint8_t>& keyBlob,
+                                       const hidl_vec<uint8_t>& clientId,
+                                       const hidl_vec<uint8_t>& appData,
+                                       getKeyCharacteristics_cb _hidl_cb) override;
+    Return<void> importKey(const hidl_vec<KeyParameter>& params, KeyFormat keyFormat,
+                           const hidl_vec<uint8_t>& keyData, importKey_cb _hidl_cb) override;
+
+    Return<void> importWrappedKey(const hidl_vec<uint8_t>& /* wrappedKeyData */,
+                                  const hidl_vec<uint8_t>& /* wrappingKeyBlob */,
+                                  const hidl_vec<uint8_t>& /* maskingKey */,
+                                  const hidl_vec<KeyParameter>& /* unwrappingParams */,
+                                  uint64_t /* passwordSid */, uint64_t /* biometricSid */,
+                                  importWrappedKey_cb _hidl_cb) {
+        _hidl_cb(V4_0::ErrorCode::UNIMPLEMENTED, {}, {});
+        return Void();
+    }
+
+    Return<void> exportKey(KeyFormat exportFormat, const hidl_vec<uint8_t>& keyBlob,
+                           const hidl_vec<uint8_t>& clientId, const hidl_vec<uint8_t>& appData,
+                           exportKey_cb _hidl_cb) override;
+    Return<void> attestKey(const hidl_vec<uint8_t>& keyToAttest,
+                           const hidl_vec<KeyParameter>& attestParams,
+                           attestKey_cb _hidl_cb) override;
+    Return<void> upgradeKey(const hidl_vec<uint8_t>& keyBlobToUpgrade,
+                            const hidl_vec<KeyParameter>& upgradeParams,
+                            upgradeKey_cb _hidl_cb) override;
+    Return<V4_0::ErrorCode> deleteKey(const hidl_vec<uint8_t>& keyBlob) override;
+    Return<V4_0::ErrorCode> deleteAllKeys() override;
+    Return<V4_0::ErrorCode> destroyAttestationIds() override;
+    Return<void> begin(KeyPurpose purpose, const hidl_vec<uint8_t>& key,
+                       const hidl_vec<KeyParameter>& inParams, const HardwareAuthToken& authToken,
+                       begin_cb _hidl_cb) override;
+    Return<void> update(uint64_t operationHandle, const hidl_vec<KeyParameter>& inParams,
+                        const hidl_vec<uint8_t>& input, const HardwareAuthToken& authToken,
+                        const VerificationToken& verificationToken, update_cb _hidl_cb) override;
+    Return<void> finish(uint64_t operationHandle, const hidl_vec<KeyParameter>& inParams,
+                        const hidl_vec<uint8_t>& input, const hidl_vec<uint8_t>& signature,
+                        const HardwareAuthToken& authToken,
+                        const VerificationToken& verificationToken, finish_cb _hidl_cb) override;
+    Return<V4_0::ErrorCode> abort(uint64_t operationHandle) override;
+
+    /**********************************
+     * V4_1::IKeymasterDevice methods *
+     *********************************/
+
+    Return<ErrorCode> deviceLocked(bool /* passwordOnly */,
+                                   const VerificationToken& /* verificationToken */) override {
+        return ErrorCode::UNIMPLEMENTED;
+    }
+
+    Return<ErrorCode> earlyBootEnded() override { return ErrorCode::UNIMPLEMENTED; }
+
+    Return<void> beginOp(KeyPurpose purpose, const hidl_vec<uint8_t>& keyBlob,
+                         const hidl_vec<KeyParameter>& inParams, const HardwareAuthToken& authToken,
+                         beginOp_cb _hidl_cb) override {
+        return begin(purpose, keyBlob, inParams, authToken,
+                     [&_hidl_cb](V4_0::ErrorCode errorCode, const hidl_vec<KeyParameter>& outParams,
+                                 OperationHandle operationHandle) {
+                         _hidl_cb(static_cast<ErrorCode>(errorCode), outParams,
+                                  new Operation(operationHandle));
+                     });
+    }
+
+  private:
+    void getVersionIfNeeded();
+
+    sp<IKeymaster3Device> km3_dev_;
+
+    bool haveVersion_;
+    VersionResult version_;
+    bool supportsSymmetricCryptography_;
+    bool supportsAttestation_;
+    bool supportsAllDigests_;
+};
+
+}  // namespace android::hardware::keymaster::V4_1::support
diff --git a/keymaster/4.1/support/include/keymasterV4_1/Keymaster4.h b/keymaster/4.1/support/include/keymasterV4_1/Keymaster4.h
new file mode 100644
index 0000000..6d74d98
--- /dev/null
+++ b/keymaster/4.1/support/include/keymasterV4_1/Keymaster4.h
@@ -0,0 +1,197 @@
+/*
+ ** Copyright 2020, The Android Open Source Project
+ **
+ ** Licensed under the Apache License, Version 2.0 (the "License");
+ ** you may not use this file except in compliance with the License.
+ ** You may obtain a copy of the License at
+ **
+ **     http://www.apache.org/licenses/LICENSE-2.0
+ **
+ ** Unless required by applicable law or agreed to in writing, software
+ ** distributed under the License is distributed on an "AS IS" BASIS,
+ ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ ** See the License for the specific language governing permissions and
+ ** limitations under the License.
+ */
+
+#pragma once
+
+#include "Keymaster.h"
+#include "Operation.h"
+
+namespace android::hardware::keymaster::V4_1::support {
+
+using android::sp;
+
+/**
+ * This class can wrap either a V4_0 or V4_1 IKeymasterDevice.
+ */
+class Keymaster4 : public Keymaster {
+  public:
+    // This definition is used for device enumeration; enumerating 4.0 devices will also
+    // enumerate 4.1. devices.
+    using WrappedIKeymasterDevice = V4_0::IKeymasterDevice;
+
+    Keymaster4(sp<V4_1::IKeymasterDevice> km4_1_dev, const hidl_string& instanceName)
+        : Keymaster(V4_1::IKeymasterDevice::descriptor, instanceName),
+          haveVersion_(false),
+          km4_0_dev_(km4_1_dev),
+          km4_1_dev_(km4_1_dev) {}
+
+    Keymaster4(sp<V4_0::IKeymasterDevice> km4_0_dev, const hidl_string& instanceName)
+        : Keymaster(V4_1::IKeymasterDevice::descriptor, instanceName),
+          haveVersion_(false),
+          km4_0_dev_(km4_0_dev),
+          km4_1_dev_() {}
+
+    const VersionResult& halVersion() const override {
+        const_cast<Keymaster4*>(this)->getVersionIfNeeded();
+        return version_;
+    }
+
+    /**********************************
+     * V4_0::IKeymasterDevice methods *
+     *********************************/
+
+    Return<void> getHardwareInfo(getHardwareInfo_cb _hidl_cb) override {
+        return km4_0_dev_->getHardwareInfo(_hidl_cb);
+    }
+
+    Return<void> getHmacSharingParameters(getHmacSharingParameters_cb _hidl_cb) override {
+        return km4_0_dev_->getHmacSharingParameters(_hidl_cb);
+    }
+
+    Return<void> computeSharedHmac(const hidl_vec<HmacSharingParameters>& params,
+                                   computeSharedHmac_cb _hidl_cb) override {
+        return km4_0_dev_->computeSharedHmac(params, _hidl_cb);
+    }
+
+    Return<void> verifyAuthorization(uint64_t operationHandle, const hidl_vec<KeyParameter>& params,
+                                     const HardwareAuthToken& authToken,
+                                     verifyAuthorization_cb _hidl_cb) override {
+        return km4_0_dev_->verifyAuthorization(operationHandle, params, authToken, _hidl_cb);
+    }
+
+    Return<V4_0::ErrorCode> addRngEntropy(const hidl_vec<uint8_t>& data) override {
+        return km4_0_dev_->addRngEntropy(data);
+    }
+
+    Return<void> generateKey(const hidl_vec<KeyParameter>& keyParams,
+                             generateKey_cb _hidl_cb) override {
+        return km4_0_dev_->generateKey(keyParams, _hidl_cb);
+    }
+
+    Return<void> getKeyCharacteristics(const hidl_vec<uint8_t>& keyBlob,
+                                       const hidl_vec<uint8_t>& clientId,
+                                       const hidl_vec<uint8_t>& appData,
+                                       getKeyCharacteristics_cb _hidl_cb) override {
+        return km4_0_dev_->getKeyCharacteristics(keyBlob, clientId, appData, _hidl_cb);
+    }
+
+    Return<void> importKey(const hidl_vec<KeyParameter>& params, KeyFormat keyFormat,
+                           const hidl_vec<uint8_t>& keyData, importKey_cb _hidl_cb) override {
+        return km4_0_dev_->importKey(params, keyFormat, keyData, _hidl_cb);
+    }
+
+    Return<void> importWrappedKey(const hidl_vec<uint8_t>& wrappedKeyData,
+                                  const hidl_vec<uint8_t>& wrappingKeyBlob,
+                                  const hidl_vec<uint8_t>& maskingKey,
+                                  const hidl_vec<KeyParameter>& unwrappingParams,
+                                  uint64_t passwordSid, uint64_t biometricSid,
+                                  importWrappedKey_cb _hidl_cb) {
+        return km4_0_dev_->importWrappedKey(wrappedKeyData, wrappingKeyBlob, maskingKey,
+                                            unwrappingParams, passwordSid, biometricSid, _hidl_cb);
+    }
+
+    Return<void> exportKey(KeyFormat exportFormat, const hidl_vec<uint8_t>& keyBlob,
+                           const hidl_vec<uint8_t>& clientId, const hidl_vec<uint8_t>& appData,
+                           exportKey_cb _hidl_cb) override {
+        return km4_0_dev_->exportKey(exportFormat, keyBlob, clientId, appData, _hidl_cb);
+    }
+
+    Return<void> attestKey(const hidl_vec<uint8_t>& keyToAttest,
+                           const hidl_vec<KeyParameter>& attestParams,
+                           attestKey_cb _hidl_cb) override {
+        return km4_0_dev_->attestKey(keyToAttest, attestParams, _hidl_cb);
+    }
+
+    Return<void> upgradeKey(const hidl_vec<uint8_t>& keyBlobToUpgrade,
+                            const hidl_vec<KeyParameter>& upgradeParams,
+                            upgradeKey_cb _hidl_cb) override {
+        return km4_0_dev_->upgradeKey(keyBlobToUpgrade, upgradeParams, _hidl_cb);
+    }
+
+    Return<V4_0::ErrorCode> deleteKey(const hidl_vec<uint8_t>& keyBlob) override {
+        return km4_0_dev_->deleteKey(keyBlob);
+    }
+
+    Return<V4_0::ErrorCode> deleteAllKeys() override { return km4_0_dev_->deleteAllKeys(); }
+
+    Return<V4_0::ErrorCode> destroyAttestationIds() override {
+        return km4_0_dev_->destroyAttestationIds();
+    }
+
+    Return<void> begin(KeyPurpose purpose, const hidl_vec<uint8_t>& key,
+                       const hidl_vec<KeyParameter>& inParams, const HardwareAuthToken& authToken,
+                       begin_cb _hidl_cb) override {
+        return km4_0_dev_->begin(purpose, key, inParams, authToken, _hidl_cb);
+    }
+
+    Return<void> update(uint64_t operationHandle, const hidl_vec<KeyParameter>& inParams,
+                        const hidl_vec<uint8_t>& input, const HardwareAuthToken& authToken,
+                        const VerificationToken& verificationToken, update_cb _hidl_cb) override {
+        return km4_0_dev_->update(operationHandle, inParams, input, authToken, verificationToken,
+                                  _hidl_cb);
+    }
+
+    Return<void> finish(uint64_t operationHandle, const hidl_vec<KeyParameter>& inParams,
+                        const hidl_vec<uint8_t>& input, const hidl_vec<uint8_t>& signature,
+                        const HardwareAuthToken& authToken,
+                        const VerificationToken& verificationToken, finish_cb _hidl_cb) override {
+        return km4_0_dev_->finish(operationHandle, inParams, input, signature, authToken,
+                                  verificationToken, _hidl_cb);
+    }
+
+    Return<V4_0::ErrorCode> abort(uint64_t operationHandle) override {
+        return km4_0_dev_->abort(operationHandle);
+    }
+
+    /**********************************
+     * V4_1::IKeymasterDevice methods *
+     *********************************/
+
+    Return<ErrorCode> deviceLocked(bool passwordOnly,
+                                   const VerificationToken& verificationToken) override {
+        if (km4_1_dev_) return km4_1_dev_->deviceLocked(passwordOnly, verificationToken);
+        return ErrorCode::UNIMPLEMENTED;
+    }
+
+    Return<ErrorCode> earlyBootEnded() override {
+        if (km4_1_dev_) return km4_1_dev_->earlyBootEnded();
+        return ErrorCode::UNIMPLEMENTED;
+    }
+
+    Return<void> beginOp(KeyPurpose purpose, const hidl_vec<uint8_t>& keyBlob,
+                         const hidl_vec<KeyParameter>& inParams, const HardwareAuthToken& authToken,
+                         beginOp_cb _hidl_cb) override {
+        if (km4_1_dev_) return km4_1_dev_->beginOp(purpose, keyBlob, inParams, authToken, _hidl_cb);
+
+        return km4_0_dev_->begin(
+                purpose, keyBlob, inParams, authToken,
+                [&_hidl_cb](V4_0::ErrorCode errorCode, const hidl_vec<KeyParameter>& outParams,
+                            OperationHandle operationHandle) {
+                    _hidl_cb(static_cast<ErrorCode>(errorCode), outParams,
+                             new Operation(operationHandle));
+                });
+    }
+
+  private:
+    void getVersionIfNeeded();
+
+    bool haveVersion_;
+    VersionResult version_;
+    sp<V4_0::IKeymasterDevice> km4_0_dev_;
+    sp<V4_1::IKeymasterDevice> km4_1_dev_;
+};  // namespace android::hardware::keymaster::V4_1::support
+
+}  // namespace android::hardware::keymaster::V4_1::support
diff --git a/keymaster/4.1/support/include/keymasterV4_1/Operation.h b/keymaster/4.1/support/include/keymasterV4_1/Operation.h
new file mode 100644
index 0000000..902d49a
--- /dev/null
+++ b/keymaster/4.1/support/include/keymasterV4_1/Operation.h
@@ -0,0 +1,38 @@
+/*
+ ** Copyright 2020, The Android Open Source Project
+ **
+ ** Licensed under the Apache License, Version 2.0 (the "License");
+ ** you may not use this file except in compliance with the License.
+ ** You may obtain a copy of the License at
+ **
+ **     http://www.apache.org/licenses/LICENSE-2.0
+ **
+ ** Unless required by applicable law or agreed to in writing, software
+ ** distributed under the License is distributed on an "AS IS" BASIS,
+ ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ ** See the License for the specific language governing permissions and
+ ** limitations under the License.
+ */
+
+#pragma once
+
+#include <android/hardware/keymaster/4.1/IOperation.h>
+
+#include <keymasterV4_1/keymaster_tags.h>
+
+namespace android::hardware::keymaster::V4_1::support {
+
+class Operation : public IOperation {
+  public:
+    Operation(OperationHandle handle) : handle_(handle) {}
+
+    Return<void> getOperationChallenge(getOperationChallenge_cb _hidl_cb) override {
+        _hidl_cb(V4_1::ErrorCode::OK, handle_);
+        return Void();
+    }
+
+  private:
+    OperationHandle handle_;
+};
+
+}  // namespace android::hardware::keymaster::V4_1::support
diff --git a/keymaster/4.1/support/include/keymasterV4_1/attestation_record.h b/keymaster/4.1/support/include/keymasterV4_1/attestation_record.h
new file mode 100644
index 0000000..b543bdd
--- /dev/null
+++ b/keymaster/4.1/support/include/keymasterV4_1/attestation_record.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android/hardware/keymaster/4.1/IKeymasterDevice.h>
+#include <keymasterV4_0/attestation_record.h>
+#include <keymasterV4_0/openssl_utils.h>
+#include <keymasterV4_1/authorization_set.h>
+
+namespace android {
+namespace hardware {
+namespace keymaster {
+namespace V4_1 {
+
+using V4_0::kAttestionRecordOid;
+using V4_0::keymaster_verified_boot_t;
+
+struct RootOfTrust {
+    SecurityLevel security_level;
+    hidl_vec<uint8_t> verified_boot_key;
+    hidl_vec<uint8_t> verified_boot_hash;
+    keymaster_verified_boot_t verified_boot_state;
+    bool device_locked;
+};
+
+struct AttestationRecord {
+    RootOfTrust root_of_trust;
+    uint32_t attestation_version;
+    SecurityLevel attestation_security_level;
+    uint32_t keymaster_version;
+    SecurityLevel keymaster_security_level;
+    hidl_vec<uint8_t> attestation_challenge;
+    AuthorizationSet software_enforced;
+    AuthorizationSet hardware_enforced;
+    hidl_vec<uint8_t> unique_id;
+};
+
+std::tuple<ErrorCode, AttestationRecord> parse_attestation_record(const hidl_vec<uint8_t>& cert);
+
+}  // namespace V4_1
+}  // namespace keymaster
+}  // namespace hardware
+}  // namespace android
diff --git a/keymaster/4.1/support/include/keymasterV4_1/authorization_set.h b/keymaster/4.1/support/include/keymasterV4_1/authorization_set.h
index afc0eaf..01605b7 100644
--- a/keymaster/4.1/support/include/keymasterV4_1/authorization_set.h
+++ b/keymaster/4.1/support/include/keymasterV4_1/authorization_set.h
@@ -14,8 +14,7 @@
  * limitations under the License.
  */
 
-#ifndef HARDWARE_INTERFACES_KEYMASTER_V4_1_SUPPORT_INCLUDE_AUTHORIZATION_SET_H_
-#define HARDWARE_INTERFACES_KEYMASTER_V4_1_SUPPORT_INCLUDE_AUTHORIZATION_SET_H_
+#pragma once
 
 #include <keymasterV4_0/authorization_set.h>
 
@@ -28,5 +27,3 @@
 using V4_0::KeyParameter;
 
 }  // namespace android::hardware::keymaster::V4_1
-
-#endif  // HARDWARE_INTERFACES_KEYMASTER_V4_1_SUPPORT_INCLUDE_AUTHORIZATION_SET_H_
diff --git a/keymaster/4.1/support/include/keymasterV4_1/keymaster_tags.h b/keymaster/4.1/support/include/keymasterV4_1/keymaster_tags.h
index 6ffe8e1..6c186f6 100644
--- a/keymaster/4.1/support/include/keymasterV4_1/keymaster_tags.h
+++ b/keymaster/4.1/support/include/keymasterV4_1/keymaster_tags.h
@@ -23,16 +23,26 @@
 
 namespace android::hardware::keymaster::V4_1 {
 
+using V4_0::Algorithm;
 using V4_0::BlockMode;
 using V4_0::Digest;
 using V4_0::EcCurve;
-using V4_0::ErrorCode;
+using V4_0::HardwareAuthenticatorType;
 using V4_0::HardwareAuthToken;
+using V4_0::HmacSharingParameters;
+using V4_0::KeyBlobUsageRequirements;
+using V4_0::KeyCharacteristics;
+using V4_0::KeyFormat;
+using V4_0::KeyOrigin;
 using V4_0::KeyParameter;
+using V4_0::KeyPurpose;
+using V4_0::OperationHandle;
 using V4_0::PaddingMode;
+using V4_0::SecurityLevel;
 using V4_0::TagType;
 using V4_0::VerificationToken;
 
+using V4_0::NullOr;
 using V4_0::TypedTag;
 
 using V4_0::TAG_ACTIVE_DATETIME;
@@ -90,6 +100,7 @@
 
 DECLARE_KM_4_1_TYPED_TAG(EARLY_BOOT_ONLY);
 DECLARE_KM_4_1_TYPED_TAG(DEVICE_UNIQUE_ATTESTATION);
+DECLARE_KM_4_1_TYPED_TAG(STORAGE_KEY);
 
 }  // namespace android::hardware::keymaster::V4_1
 
diff --git a/keymaster/4.1/support/include/keymasterV4_1/keymaster_utils.h b/keymaster/4.1/support/include/keymasterV4_1/keymaster_utils.h
new file mode 100644
index 0000000..2e28002
--- /dev/null
+++ b/keymaster/4.1/support/include/keymasterV4_1/keymaster_utils.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <keymasterV4_0/keymaster_utils.h>
+
+namespace android::hardware::keymaster::V4_1::support {
+
+using V4_0::support::blob2hidlVec;
+using V4_0::support::hidlVec2AuthToken;
+
+}  // namespace android::hardware::keymaster::V4_1::support
diff --git a/keymaster/4.1/types.hal b/keymaster/4.1/types.hal
index 9e8b30e..f3bdcc6 100644
--- a/keymaster/4.1/types.hal
+++ b/keymaster/4.1/types.hal
@@ -50,10 +50,29 @@
      * HAL attests to Credential Keys.  IIdentityCredential produces Keymaster-style attestations.
      */
     IDENTITY_CREDENTIAL_KEY = TagType:BOOL | 721,
+
+    /**
+     * To prevent keys from being compromised if an attacker acquires read access to system / kernel
+     * memory, some inline encryption hardware supports protecting storage encryption keys in hardware
+     * without software having access to or the ability to set the plaintext keys. Instead, software
+     * only sees wrapped version of these keys.
+     *
+     * STORAGE_KEY is used to denote that a key generated or imported is a key used for storage
+     * encryption. Keys of this type can either be generated or imported or secure imported using
+     * keymaster. exportKey() can be used to re-wrap storage key with a per-boot ephemeral key wrapped
+     * key once the key characteristics are enforced.
+     *
+     * Keys with this tag cannot be used for any operation within keymaster.
+     * ErrorCode::INVALID_OPERATION is returned when a key with Tag::STORAGE_KEY is provided to
+     * begin().
+     */
+    STORAGE_KEY = TagType:BOOL | 722,
 };
 
 enum ErrorCode : @4.0::ErrorCode {
     EARLY_BOOT_ENDED = -73,
     ATTESTATION_KEYS_NOT_PROVISIONED = -74,
     ATTESTATION_IDS_NOT_PROVISIONED = -75,
+    INVALID_OPERATION = -76,
+    STORAGE_KEY_UNSUPPORTED = -77,
 };
diff --git a/keymaster/4.1/vts/functional/Android.bp b/keymaster/4.1/vts/functional/Android.bp
index f5a0c9c..c2d7fa3 100644
--- a/keymaster/4.1/vts/functional/Android.bp
+++ b/keymaster/4.1/vts/functional/Android.bp
@@ -19,12 +19,24 @@
     defaults: ["VtsHalTargetTestDefaults"],
     srcs: [
         "EarlyBootKeyTest.cpp",
+        "DeviceUniqueAttestationTest.cpp",
+        "Keymaster4_1HidlTest.cpp",
+        "UnlockedDeviceRequiredTest.cpp",
     ],
     static_libs: [
         "android.hardware.keymaster@4.0",
         "android.hardware.keymaster@4.1",
-        "libkeymaster4support",
+        "libcrypto_static",
         "libkeymaster4_1support",
+        "libkeymaster4support",
+        "libkeymaster4vtstest",
     ],
-    test_suites: ["vts-core"],
+    cflags: [
+        "-Wall",
+        "-O0",
+    ],
+    test_suites: [
+        "general-tests",
+        "vts-core",
+    ],
 }
diff --git a/keymaster/4.1/vts/functional/DeviceUniqueAttestationTest.cpp b/keymaster/4.1/vts/functional/DeviceUniqueAttestationTest.cpp
new file mode 100644
index 0000000..7ea3275
--- /dev/null
+++ b/keymaster/4.1/vts/functional/DeviceUniqueAttestationTest.cpp
@@ -0,0 +1,278 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Keymaster4_1HidlTest.h"
+
+#include <cutils/properties.h>
+
+#include <openssl/x509.h>
+
+#include <keymasterV4_1/attestation_record.h>
+#include <keymasterV4_1/authorization_set.h>
+
+namespace android::hardware::keymaster::V4_0 {
+
+bool operator==(const AuthorizationSet& a, const AuthorizationSet& b) {
+    return std::equal(a.begin(), a.end(), b.begin(), b.end());
+}
+
+}  // namespace android::hardware::keymaster::V4_0
+
+namespace android::hardware::keymaster::V4_1 {
+
+inline ::std::ostream& operator<<(::std::ostream& os, Tag tag) {
+    return os << toString(tag);
+}
+
+namespace test {
+
+using std::string;
+using std::tuple;
+
+namespace {
+
+char nibble2hex[16] = {'0', '1', '2', '3', '4', '5', '6', '7',
+                       '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
+
+string bin2hex(const hidl_vec<uint8_t>& data) {
+    string retval;
+    retval.reserve(data.size() * 2 + 1);
+    for (uint8_t byte : data) {
+        retval.push_back(nibble2hex[0x0F & (byte >> 4)]);
+        retval.push_back(nibble2hex[0x0F & byte]);
+    }
+    return retval;
+}
+
+struct AuthorizationSetDifferences {
+    string aName;
+    string bName;
+    AuthorizationSet aWhackB;
+    AuthorizationSet bWhackA;
+};
+
+std::ostream& operator<<(std::ostream& o, const AuthorizationSetDifferences& diffs) {
+    if (!diffs.aWhackB.empty()) {
+        o << "Set " << diffs.aName << " contains the following that " << diffs.bName << " does not"
+          << diffs.aWhackB;
+        if (!diffs.bWhackA.empty()) o << std::endl;
+    }
+
+    if (!diffs.bWhackA.empty()) {
+        o << "Set " << diffs.bName << " contains the following that " << diffs.aName << " does not"
+          << diffs.bWhackA;
+    }
+    return o;
+}
+
+// Computes and returns a \ b and b \ a ('\' is the set-difference operator, a \ b means all the
+// elements that are in a but not b, i.e. take a and whack all the elements in b) to the provided
+// stream.  The sets must be sorted.
+//
+// This provides a simple and clear view of how the two sets differ, generally much
+// easier than scrutinizing printouts of the two sets.
+AuthorizationSetDifferences difference(string aName, const AuthorizationSet& a, string bName,
+                                       const AuthorizationSet& b) {
+    AuthorizationSetDifferences diffs = {std::move(aName), std::move(bName), {}, {}};
+    std::set_difference(a.begin(), a.end(), b.begin(), b.end(), std::back_inserter(diffs.aWhackB));
+    std::set_difference(b.begin(), b.end(), a.begin(), a.end(), std::back_inserter(diffs.bWhackA));
+    return diffs;
+}
+
+#define DIFFERENCE(a, b) difference(#a, a, #b, b)
+
+void check_root_of_trust(const RootOfTrust& root_of_trust) {
+    char vb_meta_device_state[PROPERTY_VALUE_MAX];
+    if (property_get("ro.boot.vbmeta.device_state", vb_meta_device_state, "") == 0) return;
+
+    char vb_meta_digest[PROPERTY_VALUE_MAX];
+    EXPECT_GT(property_get("ro.boot.vbmeta.digest", vb_meta_digest, ""), 0);
+    EXPECT_EQ(vb_meta_digest, bin2hex(root_of_trust.verified_boot_hash));
+
+    // Verified boot key should be all 0's if the boot state is not verified or self signed
+    HidlBuf empty_boot_key(string(32, '\0'));
+
+    char vb_meta_bootstate[PROPERTY_VALUE_MAX];
+    auto& verified_boot_key = root_of_trust.verified_boot_key;
+    auto& verified_boot_state = root_of_trust.verified_boot_state;
+    EXPECT_GT(property_get("ro.boot.verifiedbootstate", vb_meta_bootstate, ""), 0);
+    if (!strcmp(vb_meta_bootstate, "green")) {
+        EXPECT_EQ(verified_boot_state, V4_0::KM_VERIFIED_BOOT_VERIFIED);
+        EXPECT_NE(verified_boot_key, empty_boot_key);
+    } else if (!strcmp(vb_meta_bootstate, "yellow")) {
+        EXPECT_EQ(verified_boot_state, V4_0::KM_VERIFIED_BOOT_SELF_SIGNED);
+        EXPECT_NE(verified_boot_key, empty_boot_key);
+    } else if (!strcmp(vb_meta_bootstate, "orange")) {
+        EXPECT_EQ(verified_boot_state, V4_0::KM_VERIFIED_BOOT_UNVERIFIED);
+        EXPECT_EQ(verified_boot_key, empty_boot_key);
+    } else if (!strcmp(vb_meta_bootstate, "red")) {
+        EXPECT_EQ(verified_boot_state, V4_0::KM_VERIFIED_BOOT_FAILED);
+    } else {
+        EXPECT_EQ(verified_boot_state, V4_0::KM_VERIFIED_BOOT_UNVERIFIED);
+        EXPECT_EQ(verified_boot_key, empty_boot_key);
+    }
+}
+
+void check_attestation_record(AttestationRecord attestation, const HidlBuf& challenge,
+                              AuthorizationSet expected_sw_enforced,
+                              AuthorizationSet expected_hw_enforced,
+                              SecurityLevel expected_security_level) {
+    EXPECT_EQ(41U, attestation.keymaster_version);
+    EXPECT_EQ(4U, attestation.attestation_version);
+    EXPECT_EQ(expected_security_level, attestation.attestation_security_level);
+    EXPECT_EQ(expected_security_level, attestation.keymaster_security_level);
+    EXPECT_EQ(challenge, attestation.attestation_challenge);
+
+    check_root_of_trust(attestation.root_of_trust);
+
+    // Sort all of the authorization lists, so that equality matching works.
+    expected_sw_enforced.Sort();
+    expected_hw_enforced.Sort();
+    attestation.software_enforced.Sort();
+    attestation.hardware_enforced.Sort();
+
+    EXPECT_EQ(expected_sw_enforced, attestation.software_enforced)
+            << DIFFERENCE(expected_sw_enforced, attestation.software_enforced);
+    EXPECT_EQ(expected_hw_enforced, attestation.hardware_enforced)
+            << DIFFERENCE(expected_hw_enforced, attestation.hardware_enforced);
+}
+
+}  // namespace
+
+using std::string;
+using DeviceUniqueAttestationTest = Keymaster4_1HidlTest;
+
+TEST_P(DeviceUniqueAttestationTest, StrongBoxOnly) {
+    if (SecLevel() != SecurityLevel::STRONGBOX) return;
+
+    ASSERT_EQ(ErrorCode::OK, convert(GenerateKey(AuthorizationSetBuilder()
+                                                         .Authorization(TAG_NO_AUTH_REQUIRED)
+                                                         .RsaSigningKey(2048, 65537)
+                                                         .Digest(Digest::SHA_2_256)
+                                                         .Padding(PaddingMode::RSA_PKCS1_1_5_SIGN)
+                                                         .Authorization(TAG_INCLUDE_UNIQUE_ID))));
+
+    hidl_vec<hidl_vec<uint8_t>> cert_chain;
+    EXPECT_EQ(ErrorCode::UNIMPLEMENTED,
+              convert(AttestKey(
+                      AuthorizationSetBuilder()
+                              .Authorization(TAG_DEVICE_UNIQUE_ATTESTATION)
+                              .Authorization(TAG_ATTESTATION_CHALLENGE, HidlBuf("challenge"))
+                              .Authorization(TAG_ATTESTATION_APPLICATION_ID, HidlBuf("foo")),
+                      &cert_chain)));
+    CheckedDeleteKey();
+
+    ASSERT_EQ(ErrorCode::OK, convert(GenerateKey(AuthorizationSetBuilder()
+                                                         .Authorization(TAG_NO_AUTH_REQUIRED)
+                                                         .EcdsaSigningKey(EcCurve::P_256)
+                                                         .Digest(Digest::SHA_2_256)
+                                                         .Authorization(TAG_INCLUDE_UNIQUE_ID))));
+
+    EXPECT_EQ(ErrorCode::UNIMPLEMENTED,
+              convert(AttestKey(
+                      AuthorizationSetBuilder()
+                              .Authorization(TAG_ATTESTATION_CHALLENGE, HidlBuf("challenge"))
+                              .Authorization(TAG_ATTESTATION_APPLICATION_ID, HidlBuf("foo")),
+                      &cert_chain)));
+}
+
+TEST_P(DeviceUniqueAttestationTest, Rsa) {
+    if (SecLevel() != SecurityLevel::STRONGBOX) return;
+    ASSERT_EQ(ErrorCode::OK,
+              convert(GenerateKey(AuthorizationSetBuilder()
+                                          .Authorization(TAG_NO_AUTH_REQUIRED)
+                                          .RsaSigningKey(2048, 65537)
+                                          .Digest(Digest::SHA_2_256)
+                                          .Padding(PaddingMode::RSA_PKCS1_1_5_SIGN)
+                                          .Authorization(TAG_CREATION_DATETIME, 1))));
+
+    hidl_vec<hidl_vec<uint8_t>> cert_chain;
+    HidlBuf challenge("challenge");
+    HidlBuf app_id("foo");
+    EXPECT_EQ(ErrorCode::OK,
+              convert(AttestKey(AuthorizationSetBuilder()
+                                        .Authorization(TAG_DEVICE_UNIQUE_ATTESTATION)
+                                        .Authorization(TAG_ATTESTATION_CHALLENGE, challenge)
+                                        .Authorization(TAG_ATTESTATION_APPLICATION_ID, app_id),
+                                &cert_chain)));
+
+    EXPECT_EQ(1U, cert_chain.size());
+    auto [err, attestation] = parse_attestation_record(cert_chain[0]);
+    EXPECT_EQ(ErrorCode::OK, err);
+
+    check_attestation_record(attestation, challenge,
+                             /* sw_enforced */
+                             AuthorizationSetBuilder()
+                                     .Authorization(TAG_CREATION_DATETIME, 1)
+                                     .Authorization(TAG_ATTESTATION_APPLICATION_ID, app_id),
+                             /* hw_enforced */
+                             AuthorizationSetBuilder()
+                                     .Authorization(TAG_DEVICE_UNIQUE_ATTESTATION)
+                                     .Authorization(TAG_NO_AUTH_REQUIRED)
+                                     .RsaSigningKey(2048, 65537)
+                                     .Digest(Digest::SHA_2_256)
+                                     .Padding(PaddingMode::RSA_PKCS1_1_5_SIGN)
+                                     .Authorization(TAG_ORIGIN, KeyOrigin::GENERATED)
+                                     .Authorization(TAG_OS_VERSION, os_version())
+                                     .Authorization(TAG_OS_PATCHLEVEL, os_patch_level()),
+                             SecLevel());
+}
+
+TEST_P(DeviceUniqueAttestationTest, Ecdsa) {
+    if (SecLevel() != SecurityLevel::STRONGBOX) return;
+    ASSERT_EQ(ErrorCode::OK,
+              convert(GenerateKey(AuthorizationSetBuilder()
+                                          .Authorization(TAG_NO_AUTH_REQUIRED)
+                                          .EcdsaSigningKey(256)
+                                          .Digest(Digest::SHA_2_256)
+                                          .Authorization(TAG_CREATION_DATETIME, 1))));
+
+    hidl_vec<hidl_vec<uint8_t>> cert_chain;
+    HidlBuf challenge("challenge");
+    HidlBuf app_id("foo");
+    EXPECT_EQ(ErrorCode::OK,
+              convert(AttestKey(AuthorizationSetBuilder()
+                                        .Authorization(TAG_DEVICE_UNIQUE_ATTESTATION)
+                                        .Authorization(TAG_ATTESTATION_CHALLENGE, challenge)
+                                        .Authorization(TAG_ATTESTATION_APPLICATION_ID, app_id),
+                                &cert_chain)));
+
+    EXPECT_EQ(1U, cert_chain.size());
+    auto [err, attestation] = parse_attestation_record(cert_chain[0]);
+    EXPECT_EQ(ErrorCode::OK, err);
+
+    check_attestation_record(attestation, challenge,
+                             /* sw_enforced */
+                             AuthorizationSetBuilder()
+                                     .Authorization(TAG_CREATION_DATETIME, 1)
+                                     .Authorization(TAG_ATTESTATION_APPLICATION_ID, app_id),
+                             /* hw_enforced */
+                             AuthorizationSetBuilder()
+                                     .Authorization(TAG_DEVICE_UNIQUE_ATTESTATION)
+                                     .Authorization(TAG_NO_AUTH_REQUIRED)
+                                     .EcdsaSigningKey(256)
+                                     .Digest(Digest::SHA_2_256)
+                                     .Authorization(TAG_EC_CURVE, EcCurve::P_256)
+                                     .Authorization(TAG_ORIGIN, KeyOrigin::GENERATED)
+                                     .Authorization(TAG_OS_VERSION, os_version())
+                                     .Authorization(TAG_OS_PATCHLEVEL, os_patch_level()),
+                             SecLevel());
+}
+
+INSTANTIATE_KEYMASTER_4_1_HIDL_TEST(DeviceUniqueAttestationTest);
+
+}  // namespace test
+}  // namespace android::hardware::keymaster::V4_1
diff --git a/keymaster/4.1/vts/functional/EarlyBootKeyTest.cpp b/keymaster/4.1/vts/functional/EarlyBootKeyTest.cpp
index 4a19010..a26c688 100644
--- a/keymaster/4.1/vts/functional/EarlyBootKeyTest.cpp
+++ b/keymaster/4.1/vts/functional/EarlyBootKeyTest.cpp
@@ -14,8 +14,78 @@
  * limitations under the License.
  */
 
+#include "Keymaster4_1HidlTest.h"
+
+#include <keymasterV4_1/authorization_set.h>
+
 namespace android::hardware::keymaster::V4_1::test {
 
-// TODO(swillden): Put tests here.
+using std::string;
+
+using EarlyBootKeyTest = Keymaster4_1HidlTest;
+
+// Because VTS tests are run on fully-booted machines, we can only run negative tests for early boot
+// keys, which cannot be created or used after /data is mounted.  This is the only test we can run
+// in the normal case.  The positive test will have to be done by the Android system, when it
+// creates/uses early boot keys during boot.  It should fail to boot if the early boot key usage
+// fails.
+TEST_P(EarlyBootKeyTest, CannotCreateEarlyBootKeys) {
+    auto [aesKeyData, hmacKeyData, rsaKeyData, ecdsaKeyData] =
+            CreateTestKeys(TAG_EARLY_BOOT_ONLY, ErrorCode::EARLY_BOOT_ENDED);
+
+    CheckedDeleteKeyData(&aesKeyData);
+    CheckedDeleteKeyData(&hmacKeyData);
+    CheckedDeleteKeyData(&rsaKeyData);
+    CheckedDeleteKeyData(&ecdsaKeyData);
+}
+
+// This is a more comprenhensive test, but it can only be run on a machine which is still in early
+// boot stage, which no proper Android device is by the time we can run VTS.  To use this,
+// un-disable it and modify vold to remove the call to earlyBootEnded().  Running the test will end
+// early boot, so you'll have to reboot between runs.
+TEST_P(EarlyBootKeyTest, DISABLED_FullTest) {
+    // Should be able to create keys, since early boot has not ended
+    auto [aesKeyData, hmacKeyData, rsaKeyData, ecdsaKeyData] =
+            CreateTestKeys(TAG_EARLY_BOOT_ONLY, ErrorCode::OK);
+
+    // TAG_EARLY_BOOT_ONLY should be in hw-enforced.
+    EXPECT_TRUE(contains(aesKeyData.characteristics.hardwareEnforced, TAG_EARLY_BOOT_ONLY));
+    EXPECT_TRUE(contains(hmacKeyData.characteristics.hardwareEnforced, TAG_EARLY_BOOT_ONLY));
+    EXPECT_TRUE(contains(rsaKeyData.characteristics.hardwareEnforced, TAG_EARLY_BOOT_ONLY));
+    EXPECT_TRUE(contains(ecdsaKeyData.characteristics.hardwareEnforced, TAG_EARLY_BOOT_ONLY));
+
+    // Should be able to use keys, since early boot has not ended
+    EXPECT_EQ(ErrorCode::OK, UseAesKey(aesKeyData.blob));
+    EXPECT_EQ(ErrorCode::OK, UseHmacKey(hmacKeyData.blob));
+    EXPECT_EQ(ErrorCode::OK, UseRsaKey(rsaKeyData.blob));
+    EXPECT_EQ(ErrorCode::OK, UseEcdsaKey(ecdsaKeyData.blob));
+
+    // End early boot
+    Return<ErrorCode> earlyBootResult = keymaster().earlyBootEnded();
+    EXPECT_TRUE(earlyBootResult.isOk());
+    EXPECT_EQ(earlyBootResult, ErrorCode::OK);
+
+    // Should not be able to use already-created keys.
+    EXPECT_EQ(ErrorCode::EARLY_BOOT_ENDED, UseAesKey(aesKeyData.blob));
+    EXPECT_EQ(ErrorCode::EARLY_BOOT_ENDED, UseHmacKey(hmacKeyData.blob));
+    EXPECT_EQ(ErrorCode::EARLY_BOOT_ENDED, UseRsaKey(rsaKeyData.blob));
+    EXPECT_EQ(ErrorCode::EARLY_BOOT_ENDED, UseEcdsaKey(ecdsaKeyData.blob));
+
+    CheckedDeleteKeyData(&aesKeyData);
+    CheckedDeleteKeyData(&hmacKeyData);
+    CheckedDeleteKeyData(&rsaKeyData);
+    CheckedDeleteKeyData(&ecdsaKeyData);
+
+    // Should not be able to create new keys
+    std::tie(aesKeyData, hmacKeyData, rsaKeyData, ecdsaKeyData) =
+            CreateTestKeys(TAG_EARLY_BOOT_ONLY, ErrorCode::EARLY_BOOT_ENDED);
+
+    CheckedDeleteKeyData(&aesKeyData);
+    CheckedDeleteKeyData(&hmacKeyData);
+    CheckedDeleteKeyData(&rsaKeyData);
+    CheckedDeleteKeyData(&ecdsaKeyData);
+}
+
+INSTANTIATE_KEYMASTER_4_1_HIDL_TEST(EarlyBootKeyTest);
 
 }  // namespace android::hardware::keymaster::V4_1::test
diff --git a/keymaster/4.1/vts/functional/Keymaster4_1HidlTest.cpp b/keymaster/4.1/vts/functional/Keymaster4_1HidlTest.cpp
new file mode 100644
index 0000000..efedf28
--- /dev/null
+++ b/keymaster/4.1/vts/functional/Keymaster4_1HidlTest.cpp
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Keymaster4_1HidlTest.h"
+
+namespace android::hardware::keymaster::V4_1::test {
+
+using std::string;
+
+void Keymaster4_1HidlTest::SetUp() {
+    keymaster41_ = IKeymasterDevice::getService(GetParam());
+    InitializeKeymaster(keymaster41_);
+}
+
+auto Keymaster4_1HidlTest::ProcessMessage(const HidlBuf& key_blob, KeyPurpose operation,
+                                          const string& message, const AuthorizationSet& in_params)
+        -> std::tuple<ErrorCode, string, AuthorizationSet /* out_params */> {
+    AuthorizationSet begin_out_params;
+    V4_0::ErrorCode result = Begin(operation, key_blob, in_params, &begin_out_params, &op_handle_);
+    AuthorizationSet out_params(std::move(begin_out_params));
+    if (result != V4_0::ErrorCode::OK) {
+        return {convert(result), {}, out_params};
+    }
+
+    string output;
+    size_t consumed = 0;
+    AuthorizationSet update_params;
+    AuthorizationSet update_out_params;
+    result = Update(op_handle_, update_params, message, &update_out_params, &output, &consumed);
+    out_params.push_back(update_out_params);
+    if (result != V4_0::ErrorCode::OK) {
+        return {convert(result), output, out_params};
+    }
+
+    string unused;
+    AuthorizationSet finish_params;
+    AuthorizationSet finish_out_params;
+    result = Finish(op_handle_, finish_params, message.substr(consumed), unused, &finish_out_params,
+                    &output);
+    op_handle_ = V4_0::test::kOpHandleSentinel;
+    out_params.push_back(finish_out_params);
+
+    return {convert(result), output, out_params};
+}
+
+}  // namespace android::hardware::keymaster::V4_1::test
diff --git a/keymaster/4.1/vts/functional/Keymaster4_1HidlTest.h b/keymaster/4.1/vts/functional/Keymaster4_1HidlTest.h
new file mode 100644
index 0000000..6332c43
--- /dev/null
+++ b/keymaster/4.1/vts/functional/Keymaster4_1HidlTest.h
@@ -0,0 +1,158 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <android/hardware/keymaster/4.1/IKeymasterDevice.h>
+
+#include <KeymasterHidlTest.h>
+#include <keymasterV4_1/authorization_set.h>
+
+namespace android::hardware::keymaster::V4_1::test {
+
+using V4_0::test::HidlBuf;
+
+class Keymaster4_1HidlTest : public V4_0::test::KeymasterHidlTest {
+  public:
+    using super = V4_0::test::KeymasterHidlTest;
+
+    ErrorCode convert(V4_0::ErrorCode error_code) { return static_cast<ErrorCode>(error_code); }
+
+    // These methods hide the base class versions.
+    void SetUp();
+    IKeymasterDevice& keymaster() { return *keymaster41_; };
+
+    struct KeyData {
+        HidlBuf blob;
+        KeyCharacteristics characteristics;
+    };
+
+    std::tuple<ErrorCode, KeyData> GenerateKeyData(const AuthorizationSet& keyDescription) {
+        KeyData keyData;
+        ErrorCode errorCode = convert(
+                super::GenerateKey(keyDescription, &keyData.blob, &keyData.characteristics));
+        return {errorCode, keyData};
+    }
+
+    void CheckedDeleteKeyData(KeyData* keyData) { CheckedDeleteKey(&keyData->blob); }
+
+    template <typename TagType>
+    std::tuple<KeyData /* aesKey */, KeyData /* hmacKey */, KeyData /* rsaKey */,
+               KeyData /* ecdsaKey */>
+    CreateTestKeys(TagType tagToTest, ErrorCode expectedReturn) {
+        ErrorCode errorCode;
+
+        /* AES */
+        KeyData aesKeyData;
+        std::tie(errorCode, aesKeyData) =
+                GenerateKeyData(AuthorizationSetBuilder()
+                                        .AesEncryptionKey(128)
+                                        .Authorization(tagToTest)
+                                        .BlockMode(BlockMode::ECB)
+                                        .Padding(PaddingMode::NONE)
+                                        .Authorization(TAG_NO_AUTH_REQUIRED));
+        EXPECT_EQ(expectedReturn, errorCode);
+
+        /* HMAC */
+        KeyData hmacKeyData;
+        std::tie(errorCode, hmacKeyData) =
+                GenerateKeyData(AuthorizationSetBuilder()
+                                        .HmacKey(128)
+                                        .Authorization(tagToTest)
+                                        .Digest(Digest::SHA_2_256)
+                                        .Authorization(TAG_MIN_MAC_LENGTH, 128)
+                                        .Authorization(TAG_NO_AUTH_REQUIRED));
+        EXPECT_EQ(expectedReturn, errorCode);
+
+        /* RSA */
+        KeyData rsaKeyData;
+        std::tie(errorCode, rsaKeyData) =
+                GenerateKeyData(AuthorizationSetBuilder()
+                                        .RsaSigningKey(2048, 65537)
+                                        .Authorization(tagToTest)
+                                        .Digest(Digest::NONE)
+                                        .Padding(PaddingMode::NONE)
+                                        .Authorization(TAG_NO_AUTH_REQUIRED));
+        EXPECT_EQ(expectedReturn, errorCode);
+
+        /* ECDSA */
+        KeyData ecdsaKeyData;
+        std::tie(errorCode, ecdsaKeyData) =
+                GenerateKeyData(AuthorizationSetBuilder()
+                                        .EcdsaSigningKey(256)
+                                        .Authorization(tagToTest)
+                                        .Digest(Digest::SHA_2_256)
+                                        .Authorization(TAG_NO_AUTH_REQUIRED));
+        EXPECT_EQ(expectedReturn, errorCode);
+
+        return {aesKeyData, hmacKeyData, rsaKeyData, ecdsaKeyData};
+    }
+
+    std::tuple<ErrorCode, std::string /* processedMessage */, AuthorizationSet /* out_params */>
+    ProcessMessage(const HidlBuf& key_blob, KeyPurpose operation, const std::string& message,
+                   const AuthorizationSet& in_params);
+
+    ErrorCode UseAesKey(const HidlBuf& aesKeyBlob) {
+        auto [result, ciphertext, out_params] = ProcessMessage(
+                aesKeyBlob, KeyPurpose::ENCRYPT, "1234567890123456",
+                AuthorizationSetBuilder().BlockMode(BlockMode::ECB).Padding(PaddingMode::NONE));
+        return result;
+    }
+
+    ErrorCode UseHmacKey(const HidlBuf& hmacKeyBlob) {
+        auto [result, mac, out_params] =
+                ProcessMessage(hmacKeyBlob, KeyPurpose::SIGN, "1234567890123456",
+                               AuthorizationSetBuilder().Authorization(TAG_MAC_LENGTH, 128));
+        return result;
+    }
+
+    ErrorCode UseRsaKey(const HidlBuf& rsaKeyBlob) {
+        std::string message(2048 / 8, 'a');
+        auto [result, signature, out_params] = ProcessMessage(
+                rsaKeyBlob, KeyPurpose::SIGN, message,
+                AuthorizationSetBuilder().Digest(Digest::NONE).Padding(PaddingMode::NONE));
+        return result;
+    }
+
+    ErrorCode UseEcdsaKey(const HidlBuf& ecdsaKeyBlob) {
+        auto [result, signature, out_params] =
+                ProcessMessage(ecdsaKeyBlob, KeyPurpose::SIGN, "a",
+                               AuthorizationSetBuilder().Digest(Digest::SHA_2_256));
+        return result;
+    }
+
+    static std::vector<std::string> build_params() {
+        auto params = android::hardware::getAllHalInstanceNames(IKeymasterDevice::descriptor);
+        return params;
+    }
+
+  private:
+    sp<IKeymasterDevice> keymaster41_;
+};
+
+template <typename TypedTag>
+bool contains(hidl_vec<KeyParameter>& set, TypedTag typedTag) {
+    return std::find_if(set.begin(), set.end(), [&](const KeyParameter& param) {
+               return param.tag == static_cast<V4_0::Tag>(typedTag);
+           }) != set.end();
+}
+
+#define INSTANTIATE_KEYMASTER_4_1_HIDL_TEST(name)                                     \
+    INSTANTIATE_TEST_SUITE_P(PerInstance, name,                                       \
+                             testing::ValuesIn(Keymaster4_1HidlTest::build_params()), \
+                             android::hardware::PrintInstanceNameToString)
+
+}  // namespace android::hardware::keymaster::V4_1::test
diff --git a/keymaster/4.1/vts/functional/UnlockedDeviceRequiredTest.cpp b/keymaster/4.1/vts/functional/UnlockedDeviceRequiredTest.cpp
new file mode 100644
index 0000000..671bbbf
--- /dev/null
+++ b/keymaster/4.1/vts/functional/UnlockedDeviceRequiredTest.cpp
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Keymaster4_1HidlTest.h"
+
+#include <keymasterV4_1/authorization_set.h>
+
+namespace android::hardware::keymaster::V4_1::test {
+
+using UnlockedDeviceRequiredTest = Keymaster4_1HidlTest;
+
+// This may be a problematic test.  It can't be run repeatedly without unlocking the device in
+// between runs... and on most test devices there are no enrolled credentials so it can't be
+// unlocked at all, meaning the only way to get the test to pass again on a properly-functioning
+// device is to reboot it.  For that reason, this is disabled by default.  It can be used as part of
+// a manual test process, which includes unlocking between runs, which is why it's included here.
+// Well, that and the fact that it's the only test we can do without also making calls into the
+// Gatekeeper HAL.  We haven't written any cross-HAL tests, and don't know what all of the
+// implications might be, so that may or may not be a solution.
+//
+// TODO(swillden): Use the Gatekeeper HAL to enroll some test credentials which we can verify to get
+// an unlock auth token.  If that works, enable the improved test.
+TEST_P(UnlockedDeviceRequiredTest, DISABLED_KeysBecomeUnusable) {
+    auto [aesKeyData, hmacKeyData, rsaKeyData, ecdsaKeyData] =
+            CreateTestKeys(TAG_UNLOCKED_DEVICE_REQUIRED, ErrorCode::OK);
+
+    EXPECT_EQ(ErrorCode::OK, UseAesKey(aesKeyData.blob));
+    EXPECT_EQ(ErrorCode::OK, UseHmacKey(hmacKeyData.blob));
+    EXPECT_EQ(ErrorCode::OK, UseRsaKey(rsaKeyData.blob));
+    EXPECT_EQ(ErrorCode::OK, UseEcdsaKey(ecdsaKeyData.blob));
+
+    Return<ErrorCode> rc =
+            keymaster().deviceLocked(false /* passwordOnly */, {} /* verificationToken */);
+    ASSERT_TRUE(rc.isOk());
+    ASSERT_EQ(ErrorCode::OK, static_cast<ErrorCode>(rc));
+
+    EXPECT_EQ(ErrorCode::DEVICE_LOCKED, UseAesKey(aesKeyData.blob));
+    EXPECT_EQ(ErrorCode::DEVICE_LOCKED, UseHmacKey(hmacKeyData.blob));
+    EXPECT_EQ(ErrorCode::DEVICE_LOCKED, UseRsaKey(rsaKeyData.blob));
+    EXPECT_EQ(ErrorCode::DEVICE_LOCKED, UseEcdsaKey(ecdsaKeyData.blob));
+
+    CheckedDeleteKeyData(&aesKeyData);
+    CheckedDeleteKeyData(&hmacKeyData);
+    CheckedDeleteKeyData(&rsaKeyData);
+    CheckedDeleteKeyData(&ecdsaKeyData);
+}
+
+INSTANTIATE_KEYMASTER_4_1_HIDL_TEST(UnlockedDeviceRequiredTest);
+
+}  // namespace android::hardware::keymaster::V4_1::test
diff --git a/light/aidl/Android.bp b/light/aidl/Android.bp
new file mode 100644
index 0000000..916a857
--- /dev/null
+++ b/light/aidl/Android.bp
@@ -0,0 +1,18 @@
+aidl_interface {
+    name: "android.hardware.light",
+    vendor_available: true,
+    srcs: [
+        "android/hardware/light/*.aidl",
+    ],
+    stability: "vintf",
+    backend: {
+        java: {
+            platform_apis: true,
+        },
+        ndk: {
+            vndk: {
+                enabled: true,
+            },
+        },
+    },
+}
diff --git a/light/aidl/android/hardware/light/BrightnessMode.aidl b/light/aidl/android/hardware/light/BrightnessMode.aidl
new file mode 100644
index 0000000..bc29699
--- /dev/null
+++ b/light/aidl/android/hardware/light/BrightnessMode.aidl
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.hardware.light;
+
+@VintfStability
+enum BrightnessMode {
+    /**
+     * Light brightness is managed by a user setting.
+     */
+    USER = 0,
+
+    /**
+     * Light brightness is managed by a light sensor. This is typically used
+     * to control the display backlight, but not limited to it. HALs and
+     * hardware implementations are free to support sensor for other lights or
+     * none whatsoever.
+     */
+    SENSOR = 1,
+
+    /**
+     * Use a low-persistence mode for display backlights, where the pixel
+     * color transition times are lowered.
+     *
+     * When set, the device driver must switch to a mode optimized for low display
+     * persistence that is intended to be used when the device is being treated as a
+     * head mounted display (HMD). The actual display brightness in this mode is
+     * implementation dependent, and any value set for color in LightState may be
+     * overridden by the HAL implementation.
+     *
+     * For an optimal HMD viewing experience, the display must meet the following
+     * criteria in this mode:
+     * - Gray-to-Gray, White-to-Black, and Black-to-White switching time must be ≤ 3 ms.
+     * - The display must support low-persistence with ≤ 3.5 ms persistence.
+     *   Persistence is defined as the amount of time for which a pixel is
+     *   emitting light for a single frame.
+     * - Any "smart panel" or other frame buffering options that increase display
+     *   latency are disabled.
+     * - Display brightness is set so that the display is still visible to the user
+     *   under normal indoor lighting.
+     * - The display must update at 60 Hz at least, but higher refresh rates are
+     *   recommended for low latency.
+     *
+     */
+    LOW_PERSISTENCE = 2,
+}
diff --git a/light/aidl/android/hardware/light/FlashMode.aidl b/light/aidl/android/hardware/light/FlashMode.aidl
new file mode 100644
index 0000000..00c6b6a
--- /dev/null
+++ b/light/aidl/android/hardware/light/FlashMode.aidl
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.hardware.light;
+
+@VintfStability
+enum FlashMode {
+    /**
+     * Keep the light steady on or off.
+     */
+    NONE = 0,
+    /**
+     * Flash the light at specified rate, potentially using a software-based
+     * implementation.
+     */
+    TIMED = 1,
+    /**
+     * Flash the light using hardware flashing support. This may or may not
+     * support a user-defined flashing rate or other features.
+     */
+    HARDWARE = 2,
+}
diff --git a/light/aidl/android/hardware/light/HwLight.aidl b/light/aidl/android/hardware/light/HwLight.aidl
new file mode 100644
index 0000000..43fdb4b
--- /dev/null
+++ b/light/aidl/android/hardware/light/HwLight.aidl
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.light;
+
+import android.hardware.light.LightType;
+
+/**
+ * A description of a single light. Multiple lights can map to the same physical
+ * LED. Separate physical LEDs are always represented by separate instances.
+ */
+@VintfStability
+parcelable HwLight {
+    /**
+     * Integer ID used for controlling this light
+     */
+    int id;
+
+    /**
+     * For a group of lights of the same logical type, sorting by ordinal should
+     * be give their physical order. No other meaning is carried by it.
+     */
+    int ordinal;
+
+    /**
+     * Logical type use of this light.
+     */
+    LightType type;
+}
diff --git a/light/aidl/android/hardware/light/HwLightState.aidl b/light/aidl/android/hardware/light/HwLightState.aidl
new file mode 100644
index 0000000..24d3250
--- /dev/null
+++ b/light/aidl/android/hardware/light/HwLightState.aidl
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.light;
+
+import android.hardware.light.BrightnessMode;
+import android.hardware.light.FlashMode;
+
+/**
+ * The parameters that can be set for a given light.
+ *
+ * Not all lights must support all parameters. If you
+ * can do something backward-compatible, do it.
+ */
+@VintfStability
+parcelable HwLightState {
+    /**
+     * The color of the LED in ARGB.
+     *
+     * The implementation of this in the HAL and hardware is a best-effort one.
+     *   - If a light can only do red or green and blue is requested, green
+     *     should be shown.
+     *   - If only a brightness ramp is supported, then this formula applies:
+     *      unsigned char brightness = ((77*((color>>16)&0x00ff))
+     *              + (150*((color>>8)&0x00ff)) + (29*(color&0x00ff))) >> 8;
+     *   - If only on and off are supported, 0 is off, anything else is on.
+     *
+     * The high byte should be ignored. Callers should set it to 0xff (which
+     * would correspond to 255 alpha).
+     */
+    int color;
+
+    /**
+     * To flash the light at a given rate, set flashMode to FLASH_TIMED.
+     */
+    FlashMode flashMode;
+
+    /**
+     * flashOnMs should be set to the number of milliseconds to turn the
+     * light on, before it's turned off.
+     */
+    int flashOnMs;
+
+    /**
+     * flashOfMs should be set to the number of milliseconds to turn the
+     * light off, before it's turned back on.
+     */
+    int flashOffMs;
+
+    BrightnessMode brightnessMode;
+}
diff --git a/light/aidl/android/hardware/light/ILights.aidl b/light/aidl/android/hardware/light/ILights.aidl
new file mode 100644
index 0000000..2253f73
--- /dev/null
+++ b/light/aidl/android/hardware/light/ILights.aidl
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.light;
+
+import android.hardware.light.HwLightState;
+import android.hardware.light.HwLight;
+
+/**
+ * Allows controlling logical lights/indicators, mapped to LEDs in a
+ * hardware-specific manner by the HAL implementation.
+ */
+@VintfStability
+interface ILights {
+    /**
+     * Set light identified by id to the provided state.
+     *
+     * If control over an invalid light is requested, this method exists with
+     * EX_UNSUPPORTED_OPERATION. Control over supported lights is done on a
+     * device-specific best-effort basis and unsupported sub-features will not
+     * be reported.
+     *
+     * @param id ID of logical light to set as returned by getLights()
+     * @param state describes what the light should look like.
+     */
+    void setLightState(in int id, in HwLightState state);
+
+    /**
+     * Discover what lights are supported by the HAL implementation.
+     *
+     * @return List of available lights
+     */
+    HwLight[] getLights();
+}
diff --git a/light/aidl/android/hardware/light/LightType.aidl b/light/aidl/android/hardware/light/LightType.aidl
new file mode 100644
index 0000000..9a7f656
--- /dev/null
+++ b/light/aidl/android/hardware/light/LightType.aidl
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.hardware.light;
+
+/**
+ * These light IDs correspond to logical lights, not physical.
+ * So for example, if your INDICATOR light is in line with your
+ * BUTTONS, it might make sense to also light the INDICATOR
+ * light to a reasonable color when the BUTTONS are lit.
+ */
+@VintfStability
+enum LightType {
+    BACKLIGHT = 0,
+    KEYBOARD = 1,
+    BUTTONS = 2,
+    BATTERY = 3,
+    NOTIFICATIONS = 4,
+    ATTENTION = 5,
+    BLUETOOTH = 6,
+    WIFI = 7,
+    MICROPHONE = 8,
+}
diff --git a/light/aidl/default/Android.bp b/light/aidl/default/Android.bp
new file mode 100644
index 0000000..ae3f463
--- /dev/null
+++ b/light/aidl/default/Android.bp
@@ -0,0 +1,16 @@
+cc_binary {
+    name: "android.hardware.lights-service.example",
+    relative_install_path: "hw",
+    init_rc: ["lights-default.rc"],
+    vintf_fragments: ["lights-default.xml"],
+    vendor: true,
+    shared_libs: [
+        "libbase",
+        "libbinder_ndk",
+        "android.hardware.light-ndk_platform",
+    ],
+    srcs: [
+        "Lights.cpp",
+        "main.cpp",
+    ],
+}
diff --git a/light/aidl/default/Lights.cpp b/light/aidl/default/Lights.cpp
new file mode 100644
index 0000000..74747d5
--- /dev/null
+++ b/light/aidl/default/Lights.cpp
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Lights.h"
+
+#include <android-base/logging.h>
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace light {
+
+ndk::ScopedAStatus Lights::setLightState(int id, const HwLightState& state) {
+    LOG(INFO) << "Lights setting state for id=" << id << " to color " << std::hex << state.color;
+    return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+}
+
+ndk::ScopedAStatus Lights::getLights(std::vector<HwLight>* /*lights*/) {
+    LOG(INFO) << "Lights reporting supported lights";
+    return ndk::ScopedAStatus::ok();
+}
+
+}  // namespace light
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
diff --git a/light/aidl/default/Lights.h b/light/aidl/default/Lights.h
new file mode 100644
index 0000000..8cba5a1
--- /dev/null
+++ b/light/aidl/default/Lights.h
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/light/BnLights.h>
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace light {
+
+// Default implementation that reports no supported lights.
+class Lights : public BnLights {
+    ndk::ScopedAStatus setLightState(int id, const HwLightState& state) override;
+    ndk::ScopedAStatus getLights(std::vector<HwLight>* types) override;
+};
+
+}  // namespace light
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
diff --git a/light/aidl/default/lights-default.rc b/light/aidl/default/lights-default.rc
new file mode 100644
index 0000000..687ec97
--- /dev/null
+++ b/light/aidl/default/lights-default.rc
@@ -0,0 +1,5 @@
+service vendor.light-default /vendor/bin/hw/android.hardware.lights-service.example
+    class hal
+    user nobody
+    group nobody
+    shutdown critical
diff --git a/light/aidl/default/lights-default.xml b/light/aidl/default/lights-default.xml
new file mode 100644
index 0000000..db604d6
--- /dev/null
+++ b/light/aidl/default/lights-default.xml
@@ -0,0 +1,6 @@
+<manifest version="1.0" type="device">
+    <hal format="aidl">
+        <name>android.hardware.light</name>
+        <fqname>ILights/default</fqname>
+    </hal>
+</manifest>
diff --git a/light/aidl/default/main.cpp b/light/aidl/default/main.cpp
new file mode 100644
index 0000000..a860bf4
--- /dev/null
+++ b/light/aidl/default/main.cpp
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Lights.h"
+
+#include <android-base/logging.h>
+#include <android/binder_manager.h>
+#include <android/binder_process.h>
+
+using ::aidl::android::hardware::light::Lights;
+
+int main() {
+    ABinderProcess_setThreadPoolMaxThreadCount(0);
+    std::shared_ptr<Lights> lights = ndk::SharedRefBase::make<Lights>();
+
+    const std::string instance = std::string() + Lights::descriptor + "/default";
+    binder_status_t status = AServiceManager_addService(lights->asBinder().get(), instance.c_str());
+    CHECK(status == STATUS_OK);
+
+    ABinderProcess_joinThreadPool();
+    return EXIT_FAILURE;  // should not reached
+}
diff --git a/light/aidl/vts/functional/Android.bp b/light/aidl/vts/functional/Android.bp
new file mode 100644
index 0000000..3dd8cf6
--- /dev/null
+++ b/light/aidl/vts/functional/Android.bp
@@ -0,0 +1,35 @@
+//
+// 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.
+//
+
+cc_test {
+    name: "VtsHalLightTargetTest",
+    defaults: [
+        "VtsHalTargetTestDefaults",
+        "use_libaidlvintf_gtest_helper_static",
+    ],
+    srcs: [
+        "VtsHalLightTargetTest.cpp",
+    ],
+    shared_libs: [
+        "libbinder",
+    ],
+    static_libs: [
+        "android.hardware.light-cpp",
+    ],
+    test_suites: [
+        "vts-core",
+    ],
+}
diff --git a/light/aidl/vts/functional/VtsHalLightTargetTest.cpp b/light/aidl/vts/functional/VtsHalLightTargetTest.cpp
new file mode 100644
index 0000000..3c26278
--- /dev/null
+++ b/light/aidl/vts/functional/VtsHalLightTargetTest.cpp
@@ -0,0 +1,171 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "light_aidl_hal_test"
+
+#include <aidl/Gtest.h>
+#include <aidl/Vintf.h>
+
+#include <android-base/logging.h>
+#include <android/hardware/light/ILights.h>
+#include <binder/IServiceManager.h>
+#include <binder/ProcessState.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
+
+#include <unistd.h>
+#include <set>
+
+using android::ProcessState;
+using android::sp;
+using android::String16;
+using android::binder::Status;
+using android::hardware::hidl_vec;
+using android::hardware::Return;
+using android::hardware::Void;
+using android::hardware::light::BrightnessMode;
+using android::hardware::light::FlashMode;
+using android::hardware::light::HwLight;
+using android::hardware::light::HwLightState;
+using android::hardware::light::ILights;
+using android::hardware::light::LightType;
+
+#define ASSERT_OK(ret) ASSERT_TRUE(ret.isOk())
+#define EXPECT_OK(ret) EXPECT_TRUE(ret.isOk())
+
+const std::set<LightType> kAllTypes{android::enum_range<LightType>().begin(),
+                                    android::enum_range<LightType>().end()};
+
+class LightsAidl : public testing::TestWithParam<std::string> {
+  public:
+    virtual void SetUp() override {
+        lights = android::waitForDeclaredService<ILights>(String16(GetParam().c_str()));
+        ASSERT_NE(lights, nullptr);
+        ASSERT_TRUE(lights->getLights(&supportedLights).isOk());
+    }
+
+    sp<ILights> lights;
+    std::vector<HwLight> supportedLights;
+
+    virtual void TearDown() override {
+        for (const HwLight& light : supportedLights) {
+            HwLightState off;
+            off.color = 0x00000000;
+            off.flashMode = FlashMode::NONE;
+            off.brightnessMode = BrightnessMode::USER;
+            EXPECT_TRUE(lights->setLightState(light.id, off).isOk());
+        }
+
+        // must leave the device in a useable condition
+        for (const HwLight& light : supportedLights) {
+            if (light.type == LightType::BACKLIGHT) {
+                HwLightState backlightOn;
+                backlightOn.color = 0xFFFFFFFF;
+                backlightOn.flashMode = FlashMode::TIMED;
+                backlightOn.brightnessMode = BrightnessMode::USER;
+                EXPECT_TRUE(lights->setLightState(light.id, backlightOn).isOk());
+            }
+        }
+    }
+};
+
+/**
+ * Ensure all reported lights actually work.
+ */
+TEST_P(LightsAidl, TestSupported) {
+    HwLightState whiteFlashing;
+    whiteFlashing.color = 0xFFFFFFFF;
+    whiteFlashing.flashMode = FlashMode::TIMED;
+    whiteFlashing.flashOnMs = 100;
+    whiteFlashing.flashOffMs = 50;
+    whiteFlashing.brightnessMode = BrightnessMode::USER;
+    for (const HwLight& light : supportedLights) {
+        EXPECT_TRUE(lights->setLightState(light.id, whiteFlashing).isOk());
+    }
+}
+
+/**
+ * Ensure all reported lights have one of the supported types.
+ */
+TEST_P(LightsAidl, TestSupportedLightTypes) {
+    for (const HwLight& light : supportedLights) {
+        EXPECT_TRUE(kAllTypes.find(light.type) != kAllTypes.end());
+    }
+}
+
+/**
+ * Ensure all lights have a unique id.
+ */
+TEST_P(LightsAidl, TestUniqueIds) {
+    std::set<int> ids;
+    for (const HwLight& light : supportedLights) {
+        EXPECT_TRUE(ids.find(light.id) == ids.end());
+        ids.insert(light.id);
+    }
+}
+
+/**
+ * Ensure all lights have a unique ordinal for a given type.
+ */
+TEST_P(LightsAidl, TestUniqueOrdinalsForType) {
+    std::map<int, std::set<int>> ordinalsByType;
+    for (const HwLight& light : supportedLights) {
+        auto& ordinals = ordinalsByType[(int)light.type];
+        EXPECT_TRUE(ordinals.find(light.ordinal) == ordinals.end());
+        ordinals.insert(light.ordinal);
+    }
+}
+
+/**
+ * Ensure EX_UNSUPPORTED_OPERATION is returned if LOW_PERSISTENCE is not supported.
+ */
+TEST_P(LightsAidl, TestLowPersistence) {
+    HwLightState lowPersistence;
+    lowPersistence.color = 0xFF123456;
+    lowPersistence.flashMode = FlashMode::TIMED;
+    lowPersistence.flashOnMs = 100;
+    lowPersistence.flashOffMs = 50;
+    lowPersistence.brightnessMode = BrightnessMode::LOW_PERSISTENCE;
+    for (const HwLight& light : supportedLights) {
+        Status status = lights->setLightState(light.id, lowPersistence);
+        EXPECT_TRUE(status.isOk() || Status::EX_UNSUPPORTED_OPERATION == status.exceptionCode());
+    }
+}
+
+/**
+ * Ensure EX_UNSUPPORTED_OPERATION is returns for an invalid light id.
+ */
+TEST_P(LightsAidl, TestInvalidLightIdUnsupported) {
+    int maxId = INT_MIN;
+    for (const HwLight& light : supportedLights) {
+        maxId = std::max(maxId, light.id);
+    }
+
+    Status status = lights->setLightState(maxId + 1, HwLightState());
+    EXPECT_TRUE(status.exceptionCode() == Status::EX_UNSUPPORTED_OPERATION);
+}
+
+INSTANTIATE_TEST_SUITE_P(Lights, LightsAidl,
+                         testing::ValuesIn(android::getAidlHalInstanceNames(ILights::descriptor)),
+                         android::PrintInstanceNameToString);
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    ProcessState::self()->setThreadPoolMaxThreadCount(1);
+    ProcessState::self()->startThreadPool();
+    return RUN_ALL_TESTS();
+}
diff --git a/light/utils/Android.bp b/light/utils/Android.bp
index 4c287e4..e901129 100644
--- a/light/utils/Android.bp
+++ b/light/utils/Android.bp
@@ -23,7 +23,11 @@
     shared_libs: [
         "android.hardware.light@2.0",
         "libbase",
+        "libbinder",
         "libhidlbase",
         "libutils",
     ],
+    static_libs: [
+        "android.hardware.light-cpp",
+    ],
 }
diff --git a/light/utils/main.cpp b/light/utils/main.cpp
index b834132..b9b6489 100644
--- a/light/utils/main.cpp
+++ b/light/utils/main.cpp
@@ -19,34 +19,23 @@
 
 #include <android-base/logging.h>
 #include <android/hardware/light/2.0/ILight.h>
+#include <android/hardware/light/ILights.h>
+#include <binder/IServiceManager.h>
+
+using android::sp;
+using android::waitForVintfService;
+using android::binder::Status;
+using android::hardware::hidl_vec;
+
+namespace V2_0 = android::hardware::light::V2_0;
+namespace aidl = android::hardware::light;
 
 void error(const std::string& msg) {
     LOG(ERROR) << msg;
     std::cerr << msg << std::endl;
 }
 
-int main(int argc, char* argv[]) {
-    using ::android::hardware::hidl_vec;
-    using ::android::hardware::light::V2_0::Brightness;
-    using ::android::hardware::light::V2_0::Flash;
-    using ::android::hardware::light::V2_0::ILight;
-    using ::android::hardware::light::V2_0::LightState;
-    using ::android::hardware::light::V2_0::Status;
-    using ::android::hardware::light::V2_0::Type;
-    using ::android::sp;
-
-    sp<ILight> service = ILight::getService();
-    if (service == nullptr) {
-        error("Could not retrieve light service.");
-        return -1;
-    }
-
-    static LightState off = {
-            .color = 0u,
-            .flashMode = Flash::NONE,
-            .brightnessMode = Brightness::USER,
-    };
-
+int parseArgs(int argc, char* argv[], unsigned int* color) {
     if (argc > 2) {
         error("Usage: blank_screen [color]");
         return -1;
@@ -54,25 +43,78 @@
 
     if (argc > 1) {
         char* col_ptr;
-        unsigned int col_new;
 
-        col_new = strtoul(argv[1], &col_ptr, 0);
+        *color = strtoul(argv[1], &col_ptr, 0);
         if (*col_ptr != '\0') {
             error("Failed to convert " + std::string(argv[1]) + " to number");
             return -1;
         }
-        off.color = col_new;
+
+        return 0;
     }
 
-    service->getSupportedTypes([&](const hidl_vec<Type>& types) {
-        for (Type type : types) {
-            Status ret = service->setLight(type, off);
-            if (ret != Status::SUCCESS) {
-                error("Failed to shut off screen for type " +
+    *color = 0u;
+    return 0;
+}
+
+void setToColorAidl(sp<aidl::ILights> hal, unsigned int color) {
+    static aidl::HwLightState off;
+    off.color = color;
+    off.flashMode = aidl::FlashMode::NONE;
+    off.brightnessMode = aidl::BrightnessMode::USER;
+
+    std::vector<aidl::HwLight> lights;
+    Status status = hal->getLights(&lights);
+    if (!status.isOk()) {
+        error("Failed to list lights");
+        return;
+    }
+
+    for (auto light : lights) {
+        Status setStatus = hal->setLightState(light.id, off);
+        if (!setStatus.isOk()) {
+            error("Failed to shut off light id " + std::to_string(light.id));
+        }
+    }
+}
+
+void setToColorHidl(sp<V2_0::ILight> hal, unsigned int color) {
+    static V2_0::LightState off = {
+            .color = color,
+            .flashMode = V2_0::Flash::NONE,
+            .brightnessMode = V2_0::Brightness::USER,
+    };
+
+    hal->getSupportedTypes([&](const hidl_vec<V2_0::Type>& types) {
+        for (auto type : types) {
+            V2_0::Status ret = hal->setLight(type, off);
+            if (ret != V2_0::Status::SUCCESS) {
+                error("Failed to shut off light for type " +
                       std::to_string(static_cast<int>(type)));
             }
         }
     });
+}
 
-    return 0;
+int main(int argc, char* argv[]) {
+    unsigned int inputColor;
+    int result = parseArgs(argc, argv, &inputColor);
+    if (result != 0) {
+        return result;
+    }
+
+    auto aidlHal = waitForVintfService<aidl::ILights>();
+    if (aidlHal != nullptr) {
+        setToColorAidl(aidlHal, inputColor);
+        return 0;
+    }
+
+    sp<V2_0::ILight> hidlHal = V2_0::ILight::getService();
+    if (hidlHal != nullptr) {
+        setToColorHidl(hidlHal, inputColor);
+        return 0;
+    }
+
+    error("Could not retrieve light service.");
+    return -1;
 }
diff --git a/media/c2/1.1/Android.bp b/media/c2/1.1/Android.bp
new file mode 100644
index 0000000..c3e30b2
--- /dev/null
+++ b/media/c2/1.1/Android.bp
@@ -0,0 +1,27 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.media.c2@1.1",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "IComponent.hal",
+        "IComponentStore.hal",
+    ],
+    interfaces: [
+        "android.hardware.graphics.bufferqueue@1.0",
+        "android.hardware.graphics.bufferqueue@2.0",
+        "android.hardware.graphics.common@1.0",
+        "android.hardware.graphics.common@1.1",
+        "android.hardware.graphics.common@1.2",
+        "android.hardware.media.bufferpool@2.0",
+        "android.hardware.media.c2@1.0",
+        "android.hardware.media.omx@1.0",
+        "android.hardware.media@1.0",
+        "android.hidl.base@1.0",
+        "android.hidl.safe_union@1.0",
+    ],
+    gen_java: false,
+}
diff --git a/media/c2/1.1/IComponent.hal b/media/c2/1.1/IComponent.hal
new file mode 100644
index 0000000..97382dd
--- /dev/null
+++ b/media/c2/1.1/IComponent.hal
@@ -0,0 +1,72 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.media.c2@1.1;
+
+import android.hardware.media.c2@1.0::IComponent;
+import android.hardware.media.c2@1.0::Status;
+
+/**
+ * Interface for a Codec2 component corresponding to API level 1.0 or below.
+ * Components have two states: stopped and running. The running state has three
+ * sub-states: executing, tripped and error.
+ *
+ * All methods in `IComponent` must not block. If a method call cannot be
+ * completed in a timely manner, it must return `TIMED_OUT` in the return
+ * status.
+ *
+ * @note This is an extension of version 1.0 of `IComponent`. The purpose of the
+ * extension is to add support for tunneling.
+ */
+interface IComponent extends @1.0::IComponent {
+    /**
+      * Configures a component for a tunneled playback mode.
+      *
+      * A successful call to this method puts the component in the *tunneled*
+      * mode. In this mode, the output `Worklet`s returned in
+      * IComponentListener::onWorkDone() may not contain any buffers. The output
+      * buffers are passed directly to the consumer end of a buffer queue whose
+      * producer side is configured with the returned @p sidebandStream passed
+      * to IGraphicBufferProducer::setSidebandStream().
+      *
+      * The component is initially in the non-tunneled mode by default. The
+      * tunneled mode can be toggled on only before the component starts
+      * processing. Once the component is put into the tunneled mode, it shall
+      * stay in the tunneled mode until and only until reset() is called.
+      *
+      * @param avSyncHwId A resource ID for hardware sync. The generator of sync
+      *     IDs must ensure that this number is unique among all services at any
+      *     given time. For example, if both the audio HAL and the tuner HAL
+      *     support this feature, sync IDs from the audio HAL must not clash
+      *     with sync IDs from the tuner HAL.
+      * @return status Status of the call, which may be
+      *   - `OK`        - The operation completed successfully. In this case,
+      *                   @p sidebandHandle shall not be a null handle.
+      *   - `OMITTED`   - The component does not support video tunneling.
+      *   - `BAD_STATE` - The component is already running.
+      *   - `TIMED_OUT` - The operation cannot be finished in a timely manner.
+      *   - `CORRUPTED` - Some unknown error occurred.
+      * @return sidebandHandle Codec-allocated sideband stream handle. This can
+      *     be passed to IGraphicBufferProducer::setSidebandStream() to
+      *     establish a direct channel to the consumer.
+      */
+     configureVideoTunnel(
+             uint32_t avSyncHwId
+         ) generates (
+             Status status,
+             handle sidebandHandle
+         );
+};
diff --git a/media/c2/1.1/IComponentStore.hal b/media/c2/1.1/IComponentStore.hal
new file mode 100644
index 0000000..38e0fc6
--- /dev/null
+++ b/media/c2/1.1/IComponentStore.hal
@@ -0,0 +1,64 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.media.c2@1.1;
+
+import android.hardware.media.bufferpool@2.0::IClientManager;
+import android.hardware.media.c2@1.0::IComponentListener;
+import android.hardware.media.c2@1.0::IComponentStore;
+import android.hardware.media.c2@1.0::Status;
+
+import IComponent;
+
+/**
+ * Entry point for Codec2 HAL.
+ *
+ * All methods in `IComponentStore` must not block. If a method call cannot be
+ * completed in a timely manner, it must return `TIMED_OUT` in the return
+ * status. The only exceptions are getPoolClientManager() and getConfigurable(),
+ * which must always return immediately.
+ *
+ * @note This is an extension of version 1.0 of `IComponentStore`. The purpose
+ * of the extension is to add support for tunneling.
+ */
+interface IComponentStore extends @1.0::IComponentStore {
+    /**
+     * Creates a component by name.
+     *
+     * @param name Name of the component to create. This must match one of the
+     *     names returned by listComponents().
+     * @param listener Callback receiver.
+     * @param pool `IClientManager` object of the BufferPool in the client
+     *     process. This may be null if the client does not own a BufferPool.
+     * @return status Status of the call, which may be
+     *   - `OK`        - The component was created successfully.
+     *   - `NOT_FOUND` - There is no component with the given name.
+     *   - `NO_MEMORY` - Not enough memory to create the component.
+     *   - `TIMED_OUT` - The operation cannot be finished in a timely manner.
+     *   - `CORRUPTED` - Some unknown error occurred.
+     * @return comp The created component if @p status is `OK`.
+     *
+     * @sa IComponentListener.
+     */
+    createComponent_1_1(
+            string name,
+            IComponentListener listener,
+            IClientManager pool
+        ) generates (
+            Status status,
+            IComponent comp
+        );
+};
diff --git a/neuralnetworks/1.2/vts/functional/ValidateModel.cpp b/neuralnetworks/1.2/vts/functional/ValidateModel.cpp
index a14b86b..30530be 100644
--- a/neuralnetworks/1.2/vts/functional/ValidateModel.cpp
+++ b/neuralnetworks/1.2/vts/functional/ValidateModel.cpp
@@ -216,7 +216,7 @@
         case OperandType::TENSOR_QUANT8_ASYMM:
             return {-1, 256};
         case OperandType::TENSOR_QUANT8_SYMM:
-          return {-129, -1, 1, 128};
+            return {-129, -1, 1, 128};
         case OperandType::TENSOR_QUANT16_ASYMM:
             return {-1, 65536};
         case OperandType::TENSOR_QUANT16_SYMM:
@@ -482,15 +482,15 @@
                 }
             }
         }
-        // BIDIRECTIONAL_SEQUENCE_LSTM and BIDIRECTIONAL_SEQUENCE_RNN can have
-        // either one or two outputs depending on their mergeOutputs parameter.
+        // BIDIRECTIONAL_SEQUENCE_LSTM and BIDIRECTIONAL_SEQUENCE_RNN can have either one or two
+        // outputs depending on their mergeOutputs parameter.
         if (operation.type == OperationType::BIDIRECTIONAL_SEQUENCE_LSTM ||
             operation.type == OperationType::BIDIRECTIONAL_SEQUENCE_RNN) {
-          for (const size_t outOprand : operation.outputs) {
-            if (operand == outOprand) {
-              return true;
+            for (const size_t outOprand : operation.outputs) {
+                if (operand == outOprand) {
+                    return true;
+                }
             }
-          }
         }
     }
     return false;
diff --git a/neuralnetworks/1.3/IFencedExecutionCallback.hal b/neuralnetworks/1.3/IFencedExecutionCallback.hal
index 39076b9..6030809 100644
--- a/neuralnetworks/1.3/IFencedExecutionCallback.hal
+++ b/neuralnetworks/1.3/IFencedExecutionCallback.hal
@@ -38,11 +38,24 @@
      *                - DEVICE_UNAVAILABLE if driver is offline or busy
      *                - GENERAL_FAILURE if the asynchronous task resulted in an
      *                  unspecified error
-     * @return timing Duration of execution. Unless MeasureTiming::YES was passed when
-     *                launching the execution and status is NONE, all times must
-     *                be reported as UINT64_MAX. A driver may choose to report
-     *                any time as UINT64_MAX, indicating that particular measurement is
-     *                not available.
+     *                - MISSED_DEADLINE_* if the deadline for executing a model
+     *                  cannot be met
+     *                - RESOURCE_EXHAUSTED_* if the task was aborted by the
+     *                  driver
+     * @return timingLaunched The duration starts when executeFenced is called and ends when
+     *                        executeFenced signals the returned syncFence.
+     *                        Unless MeasureTiming::YES was passed when
+     *                        launching the execution and status is NONE, all times
+     *                        must be reported as UINT64_MAX. A driver may choose to
+     *                        report any time as UINT64_MAX, indicating that particular
+     *                        measurement is not available.
+     * @return timingFenced The duration starts when all waitFor sync fences have been signaled
+     *                      and ends when executeFenced signals the returned syncFence.
+     *                      Unless MeasureTiming::YES was passed when
+     *                      launching the execution and status is NONE, all times
+     *                      must be reported as UINT64_MAX. A driver may choose to
+     *                      report any time as UINT64_MAX, indicating that particular
+     *                      measurement is not available.
      */
-    getExecutionInfo() generates (ErrorStatus status, Timing timing);
+    getExecutionInfo() generates (ErrorStatus status, Timing timingLaunched, Timing timingFenced);
 };
diff --git a/neuralnetworks/1.3/IPreparedModel.hal b/neuralnetworks/1.3/IPreparedModel.hal
index f84bcf4..d645de7 100644
--- a/neuralnetworks/1.3/IPreparedModel.hal
+++ b/neuralnetworks/1.3/IPreparedModel.hal
@@ -21,6 +21,7 @@
 import @1.2::OutputShape;
 import @1.2::Timing;
 import ErrorStatus;
+import OptionalTimeoutDuration;
 import OptionalTimePoint;
 import Request;
 import IExecutionCallback;
@@ -68,7 +69,7 @@
      *   There must be no failure unless the device itself is in a bad state.
      *
      * execute_1_3 can be called with an optional deadline. If the execution
-     * is not able to completed before the provided deadline, the execution
+     * is not able to be completed before the provided deadline, the execution
      * must be aborted, and either {@link
      * ErrorStatus::MISSED_DEADLINE_TRANSIENT} or {@link
      * ErrorStatus::MISSED_DEADLINE_PERSISTENT} must be returned. The error due
@@ -88,7 +89,7 @@
      *                The duration runs from the time the driver sees the call
      *                to the execute_1_3 function to the time the driver invokes
      *                the callback.
-     * @param deadline The time by which execution must complete. If the
+     * @param deadline The time by which the execution must complete. If the
      *                 execution cannot be finished by the deadline, the
      *                 execution must be aborted.
      * @param callback A callback object used to return the error status of
@@ -139,7 +140,7 @@
      * in a bad state.
      *
      * executeSynchronously_1_3 can be called with an optional deadline. If the
-     * execution is not able to completed before the provided deadline, the
+     * execution is not able to be completed before the provided deadline, the
      * execution must be aborted, and either {@link
      * ErrorStatus::MISSED_DEADLINE_TRANSIENT} or {@link
      * ErrorStatus::MISSED_DEADLINE_PERSISTENT} must be returned. The error due
@@ -159,7 +160,7 @@
      *                The duration runs from the time the driver sees the call
      *                to the executeSynchronously_1_3 function to the time the driver
      *                returns from the function.
-     * @param deadline The time by which execution must complete. If the
+     * @param deadline The time by which the execution must complete. If the
      *                 execution cannot be finished by the deadline, the
      *                 execution must be aborted.
      * @return status Error status of the execution, must be:
@@ -194,52 +195,75 @@
      * Launch a fenced asynchronous execution on a prepared model.
      *
      * The execution is performed asynchronously with respect to the caller.
-     * executeFenced must fully validate the request, and only accept one that is
-     * guaranteed to be completed, unless a hardware failure or kernel panic happens on the device.
-     * If there is an error during validation, executeFenced must immediately return with
-     * the corresponding ErrorStatus. If the request is valid and there is no error launching,
-     * executeFenced must dispatch an asynchronous task to perform the execution in the
-     * background, and immediately return with ErrorStatus::NONE, a sync_fence that will be
-     * signaled once the execution is completed, and a callback that can be used by the client
-     * to query the duration and runtime error status. If the task has finished
-     * before the call returns, empty handle may be returned for the sync fence. If the
-     * asynchronous task fails to launch, executeFenced must immediately return with
-     * ErrorStatus::GENERAL_FAILURE, and empty handle for the sync fence and nullptr
-     * for callback. The execution must wait for all the sync fences (if any) in wait_for to be
-     * signaled before starting the actual execution.
-     *
-     * If any of sync fences in wait_for changes to error status after the executeFenced
-     * call succeeds, the driver must immediately set the returned sync fence to error status.
+     * executeFenced must verify the inputs to the function are correct, and the usages
+     * of memory pools allocated by IDevice::allocate are valid. If there is an error,
+     * executeFenced must immediately return with the corresponding ErrorStatus, an empty
+     * handle for syncFence, and nullptr for callback. If the inputs to the function
+     * are valid and there is no error, executeFenced must dispatch an asynchronous task
+     * to perform the execution in the background, and immediately return with
+     * ErrorStatus::NONE, a sync fence that will be signaled once the execution is completed,
+     * and a callback that can be used by the client to query the duration and runtime error
+     * status. If the task has finished before the call returns, an empty handle may be returned
+     * for syncFence. The execution must wait for all the sync fences (if any) in waitFor
+     * to be signaled before starting the actual execution.
      *
      * When the asynchronous task has finished its execution, it must
-     * immediately signal the sync_fence created when dispatching. After
-     * the sync_fence is signaled, the task must not modify the content of
+     * immediately signal the syncFence returned from the executeFenced call. After
+     * the syncFence is signaled, the task must not modify the content of
      * any data object referenced by 'request' (described by the
      * {@link @1.0::DataLocation} of a {@link @1.0::RequestArgument}).
      *
+     * executeFenced can be called with an optional deadline and an optional duration.
+     * If the execution is not able to be completed before the provided deadline or
+     * within the timeout duration (measured from when all sync fences in waitFor are
+     * signaled), whichever comes earlier, the execution must be aborted, and either
+     * {@link ErrorStatus::MISSED_DEADLINE_TRANSIENT} or {@link
+     * ErrorStatus::MISSED_DEADLINE_PERSISTENT} must be returned. The error due
+     * to an abort must be sent the same way as other errors, described above.
+     * If the service reports that it does not support execution deadlines via
+     * IDevice::supportsDeadlines, and executeFenced is called with a
+     * deadline or duration, then the argument is invalid, and
+     * {@link ErrorStatus::INVALID_ARGUMENT} must be returned.
+     *
+     * If any of the sync fences in waitFor changes to error status after the executeFenced
+     * call succeeds, or the execution is aborted because it cannot finish before the deadline
+     * has been reached or the duration has elapsed, the driver must immediately set the returned
+     * syncFence to error status.
+     *
      * Any number of calls to the executeFenced, execute* and executeSynchronously*
      * functions, in any combination, may be made concurrently, even on the same
      * IPreparedModel object.
      *
      * @param request The input and output information on which the prepared
-     *                model is to be executed.
+     *                model is to be executed. The outputs in the request must have
+     *                fully specified dimensions.
      * @param waitFor A vector of sync fence file descriptors.
      *                Execution must not start until all sync fences have been signaled.
      * @param measure Specifies whether or not to measure duration of the execution.
-     *                The duration runs from the time the driver sees the call
-     *                to the executeFenced function to the time sync_fence is triggered.
+     * @param deadline The time by which the execution must complete. If the
+     *                 execution cannot be finished by the deadline, the
+     *                 execution must be aborted.
+     * @param duration The length of time within which the execution must
+     *                 complete after all sync fences in waitFor are signaled. If the
+     *                 execution cannot be finished within the duration, the execution
+     *                 must be aborted.
      * @return status Error status of the call, must be:
      *                - NONE if task is successfully launched
      *                - DEVICE_UNAVAILABLE if driver is offline or busy
      *                - GENERAL_FAILURE if there is an unspecified error
      *                - INVALID_ARGUMENT if one of the input arguments is invalid, including
      *                                   fences in error states.
-     * @return syncFence The sync fence that will be triggered when the task is completed.
+     *                - MISSED_DEADLINE_* if the deadline for executing a model
+     *                  cannot be met
+     *                - RESOURCE_EXHAUSTED_* if the task was aborted by the
+     *                  driver
+     * @return syncFence The sync fence that will be signaled when the task is completed.
      *                   The sync fence will be set to error if a critical error,
      *                   e.g. hardware failure or kernel panic, occurs when doing execution.
      * @return callback The IFencedExecutionCallback can be used to query information like duration
      *                  and error status when the execution is completed.
      */
-    executeFenced(Request request, vec<handle> waitFor, MeasureTiming measure)
+    executeFenced(Request request, vec<handle> waitFor, MeasureTiming measure,
+                  OptionalTimePoint deadline, OptionalTimeoutDuration duration)
         generates (ErrorStatus status, handle syncFence, IFencedExecutionCallback callback);
 };
diff --git a/neuralnetworks/1.3/types.hal b/neuralnetworks/1.3/types.hal
index abc33e7..ed577e4 100644
--- a/neuralnetworks/1.3/types.hal
+++ b/neuralnetworks/1.3/types.hal
@@ -5577,6 +5577,19 @@
 };
 
 /**
+ * Optional timeout duration measured in nanoseconds.
+ */
+safe_union OptionalTimeoutDuration {
+    /** No time point provided. */
+    Monostate none;
+
+    /**
+     * Timeout duration measured in nanoseconds.
+     */
+    uint64_t nanoseconds;
+};
+
+/**
  * Return status of a function.
  */
 enum ErrorStatus : @1.0::ErrorStatus {
diff --git a/neuralnetworks/1.3/vts/functional/Android.bp b/neuralnetworks/1.3/vts/functional/Android.bp
index ce2d3a9..8e7e9b9 100644
--- a/neuralnetworks/1.3/vts/functional/Android.bp
+++ b/neuralnetworks/1.3/vts/functional/Android.bp
@@ -65,6 +65,7 @@
         "libhidlmemory",
         "libneuralnetworks_generated_test_harness",
         "libneuralnetworks_utils",
+        "libsync",
     ],
     whole_static_libs: [
         "neuralnetworks_generated_V1_0_example",
diff --git a/neuralnetworks/1.3/vts/functional/GeneratedTestHarness.cpp b/neuralnetworks/1.3/vts/functional/GeneratedTestHarness.cpp
index cba1f77..8ea0b7e 100644
--- a/neuralnetworks/1.3/vts/functional/GeneratedTestHarness.cpp
+++ b/neuralnetworks/1.3/vts/functional/GeneratedTestHarness.cpp
@@ -29,11 +29,13 @@
 #include <android/hardware/neuralnetworks/1.2/IPreparedModelCallback.h>
 #include <android/hardware/neuralnetworks/1.2/types.h>
 #include <android/hardware/neuralnetworks/1.3/IDevice.h>
+#include <android/hardware/neuralnetworks/1.3/IFencedExecutionCallback.h>
 #include <android/hardware/neuralnetworks/1.3/IPreparedModel.h>
 #include <android/hardware/neuralnetworks/1.3/IPreparedModelCallback.h>
 #include <android/hardware/neuralnetworks/1.3/types.h>
 #include <android/hidl/allocator/1.0/IAllocator.h>
 #include <android/hidl/memory/1.0/IMemory.h>
+#include <android/sync.h>
 #include <gtest/gtest.h>
 #include <hidlmemory/mapping.h>
 
@@ -70,7 +72,7 @@
 
 namespace {
 
-enum class Executor { ASYNC, SYNC, BURST };
+enum class Executor { ASYNC, SYNC, BURST, FENCED };
 
 enum class OutputType { FULLY_SPECIFIED, UNSPECIFIED, INSUFFICIENT };
 
@@ -78,6 +80,13 @@
 
 enum class IOType { INPUT, OUTPUT };
 
+static void waitForSyncFence(int syncFd) {
+    constexpr int kInfiniteTimeout = -1;
+    ASSERT_GT(syncFd, 0);
+    int r = sync_wait(syncFd, kInfiniteTimeout);
+    ASSERT_GE(r, 0);
+}
+
 struct TestConfig {
     Executor executor;
     MeasureTiming measureTiming;
@@ -562,9 +571,44 @@
 
             break;
         }
+        case Executor::FENCED: {
+            SCOPED_TRACE("fenced");
+            ErrorStatus result;
+            hidl_handle syncFenceHandle;
+            sp<IFencedExecutionCallback> fencedCallback;
+            Return<void> ret = preparedModel->executeFenced(
+                    request, {}, testConfig.measureTiming, {}, {},
+                    [&result, &syncFenceHandle, &fencedCallback](
+                            ErrorStatus error, const hidl_handle& handle,
+                            const sp<IFencedExecutionCallback>& callback) {
+                        result = error;
+                        syncFenceHandle = handle;
+                        fencedCallback = callback;
+                    });
+            ASSERT_TRUE(ret.isOk());
+            if (result != ErrorStatus::NONE) {
+                ASSERT_EQ(syncFenceHandle.getNativeHandle(), nullptr);
+                ASSERT_EQ(fencedCallback, nullptr);
+                executionStatus = ErrorStatus::GENERAL_FAILURE;
+            } else if (syncFenceHandle.getNativeHandle()) {
+                waitForSyncFence(syncFenceHandle.getNativeHandle()->data[0]);
+            }
+            if (result == ErrorStatus::NONE) {
+                ASSERT_NE(fencedCallback, nullptr);
+                Return<void> ret = fencedCallback->getExecutionInfo(
+                        [&executionStatus, &timing](ErrorStatus error, Timing t, Timing) {
+                            executionStatus = error;
+                            timing = t;
+                        });
+                ASSERT_TRUE(ret.isOk());
+            }
+            break;
+        }
     }
 
-    if (testConfig.outputType != OutputType::FULLY_SPECIFIED &&
+    // The driver is allowed to reject executeFenced, and if they do, we should skip.
+    if ((testConfig.outputType != OutputType::FULLY_SPECIFIED ||
+         testConfig.executor == Executor::FENCED) &&
         executionStatus == ErrorStatus::GENERAL_FAILURE) {
         if (skipped != nullptr) {
             *skipped = true;
@@ -648,6 +692,11 @@
             executorList = {Executor::ASYNC, Executor::SYNC};
             memoryType = MemoryType::DEVICE;
         } break;
+        case TestKind::FENCED_COMPUTE: {
+            outputTypesList = {OutputType::FULLY_SPECIFIED};
+            measureTimingList = {MeasureTiming::NO, MeasureTiming::YES};
+            executorList = {Executor::FENCED};
+        } break;
         case TestKind::QUANTIZATION_COUPLING: {
             LOG(FATAL) << "Wrong TestKind for EvaluatePreparedModel";
             return;
@@ -671,7 +720,8 @@
                                    const TestModel& coupledModel) {
     const std::vector<OutputType> outputTypesList = {OutputType::FULLY_SPECIFIED};
     const std::vector<MeasureTiming> measureTimingList = {MeasureTiming::NO, MeasureTiming::YES};
-    const std::vector<Executor> executorList = {Executor::ASYNC, Executor::SYNC, Executor::BURST};
+    const std::vector<Executor> executorList = {Executor::ASYNC, Executor::SYNC, Executor::BURST,
+                                                Executor::FENCED};
 
     for (const OutputType outputType : outputTypesList) {
         for (const MeasureTiming measureTiming : measureTimingList) {
@@ -708,7 +758,8 @@
     switch (testKind) {
         case TestKind::GENERAL:
         case TestKind::DYNAMIC_SHAPE:
-        case TestKind::MEMORY_DOMAIN: {
+        case TestKind::MEMORY_DOMAIN:
+        case TestKind::FENCED_COMPUTE: {
             createPreparedModel(device, model, &preparedModel);
             if (preparedModel == nullptr) return;
             EvaluatePreparedModel(device, preparedModel, testModel, testKind);
@@ -771,6 +822,9 @@
 // Tag for the memory domain tests
 class MemoryDomainTest : public GeneratedTest {};
 
+// Tag for the fenced compute tests
+class FencedComputeTest : public GeneratedTest {};
+
 // Tag for the dynamic output shape tests
 class QuantizationCouplingTest : public GeneratedTest {};
 
@@ -786,6 +840,10 @@
     Execute(kDevice, kTestModel, /*testKind=*/TestKind::MEMORY_DOMAIN);
 }
 
+TEST_P(FencedComputeTest, Test) {
+    Execute(kDevice, kTestModel, /*testKind=*/TestKind::FENCED_COMPUTE);
+}
+
 TEST_P(QuantizationCouplingTest, Test) {
     Execute(kDevice, kTestModel, /*testKind=*/TestKind::QUANTIZATION_COUPLING);
 }
@@ -800,6 +858,9 @@
 INSTANTIATE_GENERATED_TEST(MemoryDomainTest,
                            [](const TestModel& testModel) { return !testModel.expectFailure; });
 
+INSTANTIATE_GENERATED_TEST(FencedComputeTest,
+                           [](const TestModel& testModel) { return !testModel.expectFailure; });
+
 INSTANTIATE_GENERATED_TEST(QuantizationCouplingTest, [](const TestModel& testModel) {
     return testModel.hasQuant8CoupledOperands() && testModel.operations.size() == 1;
 });
diff --git a/neuralnetworks/1.3/vts/functional/GeneratedTestHarness.h b/neuralnetworks/1.3/vts/functional/GeneratedTestHarness.h
index fe695b4..e597fac 100644
--- a/neuralnetworks/1.3/vts/functional/GeneratedTestHarness.h
+++ b/neuralnetworks/1.3/vts/functional/GeneratedTestHarness.h
@@ -65,6 +65,8 @@
     DYNAMIC_SHAPE,
     // Same as GENERAL but use device memories for inputs and outputs
     MEMORY_DOMAIN,
+    // Same as GENERAL but use executeFenced for exeuction
+    FENCED_COMPUTE,
     // Tests if quantized model with TENSOR_QUANT8_ASYMM produces the same result
     // (OK/SKIPPED/FAILED) as the model with all such tensors converted to
     // TENSOR_QUANT8_ASYMM_SIGNED.
diff --git a/neuralnetworks/1.3/vts/functional/ValidateRequest.cpp b/neuralnetworks/1.3/vts/functional/ValidateRequest.cpp
index be4112a..2fd9b64 100644
--- a/neuralnetworks/1.3/vts/functional/ValidateRequest.cpp
+++ b/neuralnetworks/1.3/vts/functional/ValidateRequest.cpp
@@ -16,7 +16,9 @@
 
 #define LOG_TAG "neuralnetworks_hidl_hal_test"
 
+#include <android/hardware/neuralnetworks/1.3/IFencedExecutionCallback.h>
 #include <chrono>
+
 #include "1.0/Utils.h"
 #include "1.3/Callbacks.h"
 #include "ExecutionBurstController.h"
@@ -136,6 +138,22 @@
             burst->freeMemory(keys.front());
         }
     }
+
+    // dispatch
+    {
+        SCOPED_TRACE(message + " [executeFenced]");
+        Return<void> ret = preparedModel->executeFenced(
+                request, {}, MeasureTiming::NO, {}, {},
+                [](ErrorStatus error, const hidl_handle& handle,
+                   const sp<IFencedExecutionCallback>& callback) {
+                    if (error != ErrorStatus::DEVICE_UNAVAILABLE) {
+                        ASSERT_EQ(ErrorStatus::INVALID_ARGUMENT, error);
+                    }
+                    ASSERT_EQ(handle.getNativeHandle(), nullptr);
+                    ASSERT_EQ(callback, nullptr);
+                });
+        ASSERT_TRUE(ret.isOk());
+    }
 }
 
 ///////////////////////// REMOVE INPUT ////////////////////////////////////
diff --git a/neuralnetworks/1.3/vts/functional/VtsHalNeuralnetworks.cpp b/neuralnetworks/1.3/vts/functional/VtsHalNeuralnetworks.cpp
index 93c8f13..896ace6 100644
--- a/neuralnetworks/1.3/vts/functional/VtsHalNeuralnetworks.cpp
+++ b/neuralnetworks/1.3/vts/functional/VtsHalNeuralnetworks.cpp
@@ -133,6 +133,23 @@
 // Forward declaration from ValidateBurst.cpp
 void validateBurst(const sp<IPreparedModel>& preparedModel, const V1_0::Request& request);
 
+// Validate sync_fence handles for dispatch with valid input
+void validateExecuteFenced(const sp<IPreparedModel>& preparedModel, const Request& request) {
+    SCOPED_TRACE("Expecting request to fail [executeFenced]");
+    Return<void> ret_null = preparedModel->executeFenced(
+            request, {hidl_handle(nullptr)}, V1_2::MeasureTiming::NO, {}, {},
+            [](ErrorStatus error, const hidl_handle& handle,
+               const sp<IFencedExecutionCallback>& callback) {
+                // TODO: fix this once sample driver impl is merged.
+                if (error != ErrorStatus::DEVICE_UNAVAILABLE) {
+                    ASSERT_EQ(ErrorStatus::INVALID_ARGUMENT, error);
+                }
+                ASSERT_EQ(handle.getNativeHandle(), nullptr);
+                ASSERT_EQ(callback, nullptr);
+            });
+    ASSERT_TRUE(ret_null.isOk());
+}
+
 void validateEverything(const sp<IDevice>& device, const Model& model, const Request& request,
                         std::pair<bool, bool> supportsDeadlines) {
     const auto [prepareModelDeadlineSupported, executionDeadlineSupported] = supportsDeadlines;
@@ -144,6 +161,7 @@
     if (preparedModel == nullptr) return;
 
     validateRequest(preparedModel, request, executionDeadlineSupported);
+    validateExecuteFenced(preparedModel, request);
 
     // TODO(butlermichael): Check if we need to test burst in V1_3 if the interface remains V1_2.
     ASSERT_TRUE(nn::compliantWithV1_0(request));
diff --git a/radio/1.5/vts/functional/radio_hidl_hal_api.cpp b/radio/1.5/vts/functional/radio_hidl_hal_api.cpp
index 3913317..09305de 100644
--- a/radio/1.5/vts/functional/radio_hidl_hal_api.cpp
+++ b/radio/1.5/vts/functional/radio_hidl_hal_api.cpp
@@ -1051,7 +1051,7 @@
     cdmaSmsMessage.address = cdmaSmsAddress;
     cdmaSmsMessage.subAddress = cdmaSmsSubaddress;
     cdmaSmsMessage.bearerData =
-        (std::vector<uint8_t>){15, 0, 3, 32, 3, 16, 1, 8, 16, 53, 76, 68, 6, 51, 106, 0};
+            (std::vector<uint8_t>){15, 0, 3, 32, 3, 16, 1, 8, 16, 53, 76, 68, 6, 51, 106, 0};
 
     radio_v1_5->sendCdmaSmsExpectMore(serial, cdmaSmsMessage);
 
@@ -1061,8 +1061,8 @@
 
     if (cardStatus.base.base.cardState == CardState::ABSENT) {
         ASSERT_TRUE(CheckAnyOfErrors(
-            radioRsp_v1_5->rspInfo.error,
-            {RadioError::INVALID_ARGUMENTS, RadioError::INVALID_STATE, RadioError::SIM_ABSENT},
-            CHECK_GENERAL_ERROR));
+                radioRsp_v1_5->rspInfo.error,
+                {RadioError::INVALID_ARGUMENTS, RadioError::INVALID_STATE, RadioError::SIM_ABSENT},
+                CHECK_GENERAL_ERROR));
     }
 }
diff --git a/rebootescrow/aidl/Android.bp b/rebootescrow/aidl/Android.bp
new file mode 100644
index 0000000..0742939
--- /dev/null
+++ b/rebootescrow/aidl/Android.bp
@@ -0,0 +1,18 @@
+aidl_interface {
+    name: "android.hardware.rebootescrow",
+    vendor_available: true,
+    srcs: [
+        "android/hardware/rebootescrow/IRebootEscrow.aidl",
+    ],
+    stability: "vintf",
+    backend: {
+        java: {
+            platform_apis: true,
+        },
+        ndk: {
+            vndk: {
+                enabled: true,
+            },
+        },
+    },
+}
diff --git a/rebootescrow/aidl/android/hardware/rebootescrow/IRebootEscrow.aidl b/rebootescrow/aidl/android/hardware/rebootescrow/IRebootEscrow.aidl
new file mode 100644
index 0000000..edc695d
--- /dev/null
+++ b/rebootescrow/aidl/android/hardware/rebootescrow/IRebootEscrow.aidl
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.rebootescrow;
+
+/**
+ * This HAL defines the interface to the device-specific implementation
+ * of retaining a secret to unlock the Synthetic Password stored during
+ * a reboot to perform an OTA update. The implementation of this interface
+ * should never store the key on any non-volatile medium. The key should be
+ * overwritten with zeroes when destroyKey() is called. All care should be given
+ * to provide the shortest lifetime for the storage of the key in volatile and
+ * erasable storage.
+ *
+ * This HAL is optional so does not require an implementation on device.
+ */
+@VintfStability
+interface IRebootEscrow {
+    /**
+     * Store the key for reboot.
+     */
+    void storeKey(in byte[] kek);
+
+    /**
+     * Retrieve the possible keys. If the implementation is probabalistic, it
+     * should return the keys in order from most-probable to least-probable.
+     * There is not a hard limit to the number of keys, but it is suggested to
+     * keep the number of key possibilities less than 32.
+     */
+    byte[] retrieveKey();
+}
diff --git a/rebootescrow/aidl/default/Android.bp b/rebootescrow/aidl/default/Android.bp
new file mode 100644
index 0000000..b77272f
--- /dev/null
+++ b/rebootescrow/aidl/default/Android.bp
@@ -0,0 +1,88 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_library_static {
+    name: "librebootescrowdefaultimpl",
+    vendor: true,
+    shared_libs: [
+        "libbase",
+        "libbinder_ndk",
+        "android.hardware.rebootescrow-ndk_platform",
+    ],
+    export_include_dirs: ["include"],
+    srcs: [
+        "RebootEscrow.cpp",
+    ],
+    visibility: [
+        ":__subpackages__",
+    ],
+}
+
+cc_binary {
+    name: "android.hardware.rebootescrow-service.default",
+    init_rc: ["rebootescrow-default.rc"],
+    relative_install_path: "hw",
+    vintf_fragments: ["rebootescrow-default.xml"],
+    vendor: true,
+    srcs: [
+        "service.cpp",
+    ],
+    cflags: [
+        "-Wall",
+        "-Werror",
+    ],
+    shared_libs: [
+        "libbase",
+        "libbinder_ndk",
+        "android.hardware.rebootescrow-ndk_platform",
+    ],
+    static_libs: [
+        "libhadamardutils",
+        "librebootescrowdefaultimpl",
+    ],
+}
+
+cc_library_static {
+    name: "libhadamardutils",
+    vendor_available: true,
+    host_supported: true,
+    shared_libs: [
+        "libbase",
+    ],
+    srcs: [
+        "HadamardUtils.cpp",
+    ],
+    visibility: [
+        ":__subpackages__",
+    ],
+}
+
+cc_test {
+    name: "HadamardUtilsTest",
+    host_supported: true,
+    srcs: [
+        "HadamardUtilsTest.cpp",
+    ],
+    static_libs: [
+        "libhadamardutils",
+        "libgtest_prod",
+    ],
+    shared_libs: [
+        "liblog",
+        "libbase",
+    ],
+    test_suites: ["device-tests"],
+}
diff --git a/rebootescrow/aidl/default/HadamardUtils.cpp b/rebootescrow/aidl/default/HadamardUtils.cpp
new file mode 100644
index 0000000..d2422b9
--- /dev/null
+++ b/rebootescrow/aidl/default/HadamardUtils.cpp
@@ -0,0 +1,163 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <HadamardUtils.h>
+
+#include <limits>
+
+#include <android-base/logging.h>
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace rebootescrow {
+namespace hadamard {
+
+static inline uint8_t read_bit(const std::vector<uint8_t>& input, size_t bit) {
+    return (input[bit >> 3] >> (bit & 7)) & 1u;
+}
+
+// Use a simple LCG which is easy to run in reverse.
+// https://www.johndcook.com/blog/2017/07/05/simple-random-number-generator/
+constexpr uint64_t RNG_MODULUS = 0x7fffffff;
+constexpr uint64_t RNG_MUL = 742938285;
+constexpr uint64_t RNG_SEED = 20170705;
+constexpr uint64_t RNG_INV_MUL = 1413043504;   // (mul * inv_mul) % modulus == 1
+constexpr uint64_t RNG_INV_SEED = 1173538311;  // (seed * mul**65534) % modulus
+
+// Apply an error correcting encoding.
+//
+// The error correcting code used is an augmented Hadamard code with
+// k=15, so it takes a 16-bit input and produces a 2^15-bit output.
+// We break the 32-byte key into 16 16-bit codewords and encode
+// each codeword to a 2^15-bit output.
+//
+// To better defend against clustered errors, we stripe together the encoded
+// codewords. Thus if a single 512-byte DRAM line is lost, instead of losing
+// 2^11 bits from the encoding of a single code word, we lose 2^7 bits
+// from the encoding of each of the 16 codewords.
+// In addition we apply a Fisher-Yates shuffle to the bytes of the encoding;
+// Hadamard encoding recovers much better from random errors than systematic
+// ones, and this ensures that errors will be random.
+std::vector<uint8_t> EncodeKey(const std::vector<uint8_t>& input) {
+    CHECK_EQ(input.size(), KEY_SIZE_IN_BYTES);
+    std::vector<uint8_t> result(OUTPUT_SIZE_BYTES, 0);
+    static_assert(OUTPUT_SIZE_BYTES == 64 * 1024);
+    // Transpose the key so that each row contains one bit from each codeword
+    uint16_t wordmatrix[CODEWORD_BITS];
+    for (size_t i = 0; i < CODEWORD_BITS; i++) {
+        uint16_t word = 0;
+        for (size_t j = 0; j < KEY_CODEWORDS; j++) {
+            word |= read_bit(input, i + j * CODEWORD_BITS) << j;
+        }
+        wordmatrix[i] = word;
+    }
+    // Fill in the encodings in Gray code order for speed.
+    uint16_t val = wordmatrix[CODEWORD_BITS - 1];
+    size_t ix = 0;
+    for (size_t i = 0; i < ENCODE_LENGTH; i++) {
+        for (size_t b = 0; b < CODEWORD_BITS; b++) {
+            if (i & (1 << b)) {
+                ix ^= (1 << b);
+                val ^= wordmatrix[b];
+                break;
+            }
+        }
+        result[ix * KEY_CODEWORD_BYTES] = val & 0xffu;
+        result[ix * KEY_CODEWORD_BYTES + 1] = val >> 8u;
+    }
+    // Apply the inverse shuffle here; we apply the forward shuffle in decoding.
+    uint64_t rng_state = RNG_INV_SEED;
+    for (size_t i = OUTPUT_SIZE_BYTES - 1; i > 0; i--) {
+        auto j = rng_state % (i + 1);
+        auto t = result[i];
+        result[i] = result[j];
+        result[j] = t;
+        rng_state *= RNG_INV_MUL;
+        rng_state %= RNG_MODULUS;
+    }
+    return result;
+}
+
+// Decode a single codeword. Because of the way codewords are striped together
+// this takes the entire input, plus an offset telling it which word to decode.
+static uint16_t DecodeWord(size_t word, const std::vector<uint8_t>& encoded) {
+    std::vector<int32_t> scores;
+    scores.reserve(ENCODE_LENGTH);
+    // Convert x -> -1^x in the encoded bits. e.g [1, 0, 0, 1] -> [-1, 1, 1, -1]
+    for (uint32_t i = 0; i < ENCODE_LENGTH; i++) {
+        scores.push_back(1 - 2 * read_bit(encoded, i * KEY_CODEWORDS + word));
+    }
+
+    // Multiply the hadamard matrix by the transformed input.
+    // |1  1  1  1|     |-1|     | 0|
+    // |1 -1  1 -1|  *  | 1|  =  | 0|
+    // |1  1 -1 -1|     | 1|     | 0|
+    // |1 -1 -1  1|     |-1|     |-4|
+    for (uint32_t i = 0; i < CODE_K; i++) {
+        uint16_t step = 1u << i;
+        for (uint32_t j = 0; j < ENCODE_LENGTH; j += 2 * step) {
+            for (uint32_t k = j; k < j + step; k++) {
+                auto a0 = scores[k];
+                auto a1 = scores[k + step];
+                scores[k] = a0 + a1;
+                scores[k + step] = a0 - a1;
+            }
+        }
+    }
+    auto hiscore = std::numeric_limits<int32_t>::min();
+    uint16_t winner;
+    // TODO(b/146520538): this needs to be constant time
+    for (size_t i = 0; i < ENCODE_LENGTH; i++) {
+        if (scores[i] > hiscore) {
+            winner = i;
+            hiscore = scores[i];
+
+        } else if (-scores[i] > hiscore) {
+            winner = i | (1 << CODE_K);
+            hiscore = -scores[i];
+        }
+    }
+    return winner;
+}
+
+std::vector<uint8_t> DecodeKey(const std::vector<uint8_t>& shuffled) {
+    CHECK_EQ(OUTPUT_SIZE_BYTES, shuffled.size());
+    // Apply the forward Fisher-Yates shuffle.
+    std::vector<uint8_t> encoded(OUTPUT_SIZE_BYTES, 0);
+    encoded[0] = shuffled[0];
+    uint64_t rng_state = RNG_SEED;
+    for (size_t i = 1; i < OUTPUT_SIZE_BYTES; i++) {
+        auto j = rng_state % (i + 1);
+        encoded[i] = encoded[j];
+        encoded[j] = shuffled[i];
+        rng_state *= RNG_MUL;
+        rng_state %= RNG_MODULUS;
+    }
+    std::vector<uint8_t> result(KEY_SIZE_IN_BYTES, 0);
+    for (size_t i = 0; i < KEY_CODEWORDS; i++) {
+        uint16_t val = DecodeWord(i, encoded);
+        result[i * CODEWORD_BYTES] = val & 0xffu;
+        result[i * CODEWORD_BYTES + 1] = val >> 8u;
+    }
+    return result;
+}
+
+}  // namespace hadamard
+}  // namespace rebootescrow
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
diff --git a/rebootescrow/aidl/default/HadamardUtils.h b/rebootescrow/aidl/default/HadamardUtils.h
new file mode 100644
index 0000000..e04f7d5
--- /dev/null
+++ b/rebootescrow/aidl/default/HadamardUtils.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <stdint.h>
+
+#include <vector>
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace rebootescrow {
+namespace hadamard {
+
+constexpr auto BYTE_LENGTH = 8u;
+constexpr auto CODEWORD_BYTES = 2u;  // uint16_t
+constexpr auto CODEWORD_BITS = CODEWORD_BYTES * BYTE_LENGTH;
+constexpr uint32_t CODE_K = CODEWORD_BITS - 1;
+constexpr uint32_t ENCODE_LENGTH = 1u << CODE_K;
+constexpr auto KEY_CODEWORD_BYTES = 2u;  // uint16_t (after transpose)
+constexpr auto KEY_CODEWORDS = KEY_CODEWORD_BYTES * BYTE_LENGTH;
+constexpr auto KEY_SIZE_IN_BYTES = KEY_CODEWORDS * CODEWORD_BYTES;
+constexpr auto OUTPUT_SIZE_BYTES = ENCODE_LENGTH * KEY_CODEWORD_BYTES;
+
+// Encodes a key that has a size of KEY_SIZE_IN_BYTES. Returns a byte array representation of the
+// encoded bitset. So a 32 bytes key will expand to 16*(2^15) bits = 64KiB.
+std::vector<uint8_t> EncodeKey(const std::vector<uint8_t>& input);
+
+// Given a byte array representation of the encoded keys, decodes it and return the result.
+std::vector<uint8_t> DecodeKey(const std::vector<uint8_t>& encoded);
+
+}  // namespace hadamard
+}  // namespace rebootescrow
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
diff --git a/rebootescrow/aidl/default/HadamardUtilsTest.cpp b/rebootescrow/aidl/default/HadamardUtilsTest.cpp
new file mode 100644
index 0000000..1c9a2fb
--- /dev/null
+++ b/rebootescrow/aidl/default/HadamardUtilsTest.cpp
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdint.h>
+#include <random>
+
+#include <gtest/gtest.h>
+
+#include <HadamardUtils.h>
+
+using namespace aidl::android::hardware::rebootescrow::hadamard;
+
+class HadamardTest : public testing::Test {};
+
+static void AddError(std::vector<uint8_t>* data) {
+    for (size_t i = 0; i < data->size(); i++) {
+        for (size_t j = 0; j < BYTE_LENGTH; j++) {
+            if (random() % 100 < 47) {
+                (*data)[i] ^= (1 << j);
+            }
+        }
+    }
+}
+
+TEST_F(HadamardTest, Decode_error_correction) {
+    constexpr auto iteration = 10;
+    for (int i = 0; i < iteration; i++) {
+        std::vector<uint8_t> key;
+        for (int j = 0; j < KEY_SIZE_IN_BYTES; j++) {
+            key.emplace_back(random() & 0xff);
+        }
+        auto encoded = EncodeKey(key);
+        ASSERT_EQ(64 * 1024, encoded.size());
+        AddError(&encoded);
+        auto decoded = DecodeKey(encoded);
+        ASSERT_EQ(key, std::vector<uint8_t>(decoded.begin(), decoded.begin() + key.size()));
+    }
+}
diff --git a/rebootescrow/aidl/default/OWNERS b/rebootescrow/aidl/default/OWNERS
new file mode 100644
index 0000000..c5288d6
--- /dev/null
+++ b/rebootescrow/aidl/default/OWNERS
@@ -0,0 +1,2 @@
+kroot@google.com
+paulcrowley@google.com
diff --git a/rebootescrow/aidl/default/RebootEscrow.cpp b/rebootescrow/aidl/default/RebootEscrow.cpp
new file mode 100644
index 0000000..5ae96f6
--- /dev/null
+++ b/rebootescrow/aidl/default/RebootEscrow.cpp
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/unique_fd.h>
+
+#include "HadamardUtils.h"
+#include "rebootescrow-impl/RebootEscrow.h"
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace rebootescrow {
+
+using ::android::base::unique_fd;
+
+ndk::ScopedAStatus RebootEscrow::storeKey(const std::vector<int8_t>& kek) {
+    int rawFd = TEMP_FAILURE_RETRY(::open(devicePath_.c_str(), O_WRONLY | O_NOFOLLOW | O_CLOEXEC));
+    unique_fd fd(rawFd);
+    if (fd.get() < 0) {
+        LOG(WARNING) << "Could not open reboot escrow device";
+        return ndk::ScopedAStatus(AStatus_fromExceptionCode(EX_UNSUPPORTED_OPERATION));
+    }
+
+    std::vector<uint8_t> ukek(kek.begin(), kek.end());
+    auto encoded = hadamard::EncodeKey(ukek);
+
+    if (!::android::base::WriteFully(fd, encoded.data(), encoded.size())) {
+        LOG(WARNING) << "Could not write data fully to character device";
+        return ndk::ScopedAStatus(AStatus_fromExceptionCode(EX_UNSUPPORTED_OPERATION));
+    }
+
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus RebootEscrow::retrieveKey(std::vector<int8_t>* _aidl_return) {
+    int rawFd = TEMP_FAILURE_RETRY(::open(devicePath_.c_str(), O_RDONLY | O_NOFOLLOW | O_CLOEXEC));
+    unique_fd fd(rawFd);
+    if (fd.get() < 0) {
+        LOG(WARNING) << "Could not open reboot escrow device";
+        return ndk::ScopedAStatus(AStatus_fromExceptionCode(EX_UNSUPPORTED_OPERATION));
+    }
+
+    std::string encodedString;
+    if (!::android::base::ReadFdToString(fd, &encodedString)) {
+        LOG(WARNING) << "Could not read device to string";
+        return ndk::ScopedAStatus(AStatus_fromExceptionCode(EX_UNSUPPORTED_OPERATION));
+    }
+
+    std::vector<uint8_t> encodedBytes(encodedString.begin(), encodedString.end());
+    auto keyBytes = hadamard::DecodeKey(encodedBytes);
+
+    std::vector<int8_t> signedKeyBytes(keyBytes.begin(), keyBytes.end());
+    *_aidl_return = signedKeyBytes;
+    return ndk::ScopedAStatus::ok();
+}
+
+}  // namespace rebootescrow
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
diff --git a/rebootescrow/aidl/default/include/rebootescrow-impl/RebootEscrow.h b/rebootescrow/aidl/default/include/rebootescrow-impl/RebootEscrow.h
new file mode 100644
index 0000000..00ff16b
--- /dev/null
+++ b/rebootescrow/aidl/default/include/rebootescrow-impl/RebootEscrow.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/rebootescrow/BnRebootEscrow.h>
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace rebootescrow {
+
+class RebootEscrow : public BnRebootEscrow {
+  public:
+    explicit RebootEscrow(const std::string& devicePath) : devicePath_(devicePath) {}
+    ndk::ScopedAStatus storeKey(const std::vector<int8_t>& kek) override;
+    ndk::ScopedAStatus retrieveKey(std::vector<int8_t>* _aidl_return) override;
+
+  private:
+    const std::string devicePath_;
+};
+
+}  // namespace rebootescrow
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
diff --git a/rebootescrow/aidl/default/rebootescrow-default.rc b/rebootescrow/aidl/default/rebootescrow-default.rc
new file mode 100644
index 0000000..ad90465
--- /dev/null
+++ b/rebootescrow/aidl/default/rebootescrow-default.rc
@@ -0,0 +1,5 @@
+service vendor.rebootescrow-default /vendor/bin/hw/android.hardware.rebootescrow-service.default
+    interface aidl android.hardware.rebootescrow.IRebootEscrow/default
+    class hal
+    user system
+    group system
diff --git a/rebootescrow/aidl/default/rebootescrow-default.xml b/rebootescrow/aidl/default/rebootescrow-default.xml
new file mode 100644
index 0000000..0499fcc
--- /dev/null
+++ b/rebootescrow/aidl/default/rebootescrow-default.xml
@@ -0,0 +1,6 @@
+<manifest version="1.0" type="device">
+    <hal format="aidl">
+        <name>android.hardware.rebootescrow</name>
+        <fqname>IRebootEscrow/default</fqname>
+    </hal>
+</manifest>
diff --git a/rebootescrow/aidl/default/service.cpp b/rebootescrow/aidl/default/service.cpp
new file mode 100644
index 0000000..8a8086b
--- /dev/null
+++ b/rebootescrow/aidl/default/service.cpp
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.1 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.1
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "rebootescrow-impl/RebootEscrow.h"
+
+#include <android-base/logging.h>
+#include <android-base/properties.h>
+#include <android/binder_manager.h>
+#include <android/binder_process.h>
+
+using aidl::android::hardware::rebootescrow::RebootEscrow;
+
+constexpr auto kRebootEscrowDeviceProperty = "ro.rebootescrow.device";
+constexpr auto kRebootEscrowDeviceDefault = "/dev/access-kregistry";
+
+int main() {
+    ABinderProcess_setThreadPoolMaxThreadCount(0);
+
+    auto rebootEscrowDevicePath =
+            android::base::GetProperty(kRebootEscrowDeviceProperty, kRebootEscrowDeviceDefault);
+    auto re = ndk::SharedRefBase::make<RebootEscrow>(rebootEscrowDevicePath);
+    const std::string instance = std::string() + RebootEscrow::descriptor + "/default";
+    binder_status_t status = AServiceManager_addService(re->asBinder().get(), instance.c_str());
+    CHECK(status == STATUS_OK);
+
+    ABinderProcess_joinThreadPool();
+    return EXIT_FAILURE;
+}
diff --git a/rebootescrow/aidl/vts/OWNERS b/rebootescrow/aidl/vts/OWNERS
new file mode 100644
index 0000000..c5288d6
--- /dev/null
+++ b/rebootescrow/aidl/vts/OWNERS
@@ -0,0 +1,2 @@
+kroot@google.com
+paulcrowley@google.com
diff --git a/rebootescrow/aidl/vts/functional/Android.bp b/rebootescrow/aidl/vts/functional/Android.bp
new file mode 100644
index 0000000..5d51a53
--- /dev/null
+++ b/rebootescrow/aidl/vts/functional/Android.bp
@@ -0,0 +1,34 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_test {
+    name: "VtsHalRebootEscrowTargetTest",
+    defaults: [
+        "VtsHalTargetTestDefaults",
+        "use_libaidlvintf_gtest_helper_static",
+    ],
+    srcs: ["VtsHalRebootEscrowTargetTest.cpp"],
+    shared_libs: [
+        "libbinder",
+    ],
+    static_libs: [
+        "android.hardware.rebootescrow-cpp",
+    ],
+    test_suites: [
+        "vts-core",
+    ],
+    require_root: true,
+}
diff --git a/rebootescrow/aidl/vts/functional/VtsHalRebootEscrowTargetTest.cpp b/rebootescrow/aidl/vts/functional/VtsHalRebootEscrowTargetTest.cpp
new file mode 100644
index 0000000..cd8cc3e
--- /dev/null
+++ b/rebootescrow/aidl/vts/functional/VtsHalRebootEscrowTargetTest.cpp
@@ -0,0 +1,111 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <aidl/Gtest.h>
+#include <aidl/Vintf.h>
+
+#include <android/hardware/rebootescrow/BnRebootEscrow.h>
+
+#include <binder/IServiceManager.h>
+#include <binder/ProcessState.h>
+
+using android::sp;
+using android::String16;
+using android::hardware::rebootescrow::IRebootEscrow;
+
+#define SKIP_UNSUPPORTED \
+    if (rebootescrow == nullptr) GTEST_SKIP() << "Not supported on this device"
+
+/**
+ * This tests that the key can be written, read, and removed. It does not test
+ * that the key survives a reboot. That needs a host-based test.
+ *
+ * atest VtsHalRebootEscrowV1_0TargetTest
+ */
+class RebootEscrowAidlTest : public testing::TestWithParam<std::string> {
+  public:
+    virtual void SetUp() override {
+        rebootescrow = android::waitForDeclaredService<IRebootEscrow>(String16(GetParam().c_str()));
+    }
+
+    sp<IRebootEscrow> rebootescrow;
+
+    std::vector<uint8_t> KEY_1{
+            0xA5, 0x00, 0xFF, 0x01, 0xA5, 0x5a, 0xAA, 0x55, 0x00, 0xD3, 0x2A,
+            0x8C, 0x2E, 0x83, 0x0E, 0x65, 0x9E, 0x8D, 0xC6, 0xAC, 0x1E, 0x83,
+            0x21, 0xB3, 0x95, 0x02, 0x89, 0x64, 0x64, 0x92, 0x12, 0x1F,
+    };
+    std::vector<uint8_t> KEY_2{
+            0xFF, 0x00, 0x00, 0xAA, 0x5A, 0x19, 0x20, 0x71, 0x9F, 0xFB, 0xDA,
+            0xB6, 0x2D, 0x06, 0xD5, 0x49, 0x7E, 0xEF, 0x63, 0xAC, 0x18, 0xFF,
+            0x5A, 0xA3, 0x40, 0xBB, 0x64, 0xFA, 0x67, 0xC1, 0x10, 0x18,
+    };
+    std::vector<uint8_t> EMPTY_KEY{
+            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    };
+};
+
+TEST_P(RebootEscrowAidlTest, StoreAndRetrieve_Success) {
+    SKIP_UNSUPPORTED;
+
+    ASSERT_TRUE(rebootescrow->storeKey(KEY_1).isOk());
+
+    std::vector<uint8_t> actualKey;
+    ASSERT_TRUE(rebootescrow->retrieveKey(&actualKey).isOk());
+    EXPECT_EQ(actualKey, KEY_1);
+}
+
+TEST_P(RebootEscrowAidlTest, StoreAndRetrieve_SecondRetrieveSucceeds) {
+    SKIP_UNSUPPORTED;
+
+    ASSERT_TRUE(rebootescrow->storeKey(KEY_1).isOk());
+
+    std::vector<uint8_t> actualKey;
+    ASSERT_TRUE(rebootescrow->retrieveKey(&actualKey).isOk());
+    EXPECT_EQ(actualKey, KEY_1);
+
+    ASSERT_TRUE(rebootescrow->retrieveKey(&actualKey).isOk());
+    EXPECT_EQ(actualKey, KEY_1);
+}
+
+TEST_P(RebootEscrowAidlTest, StoreTwiceOverwrites_Success) {
+    SKIP_UNSUPPORTED;
+
+    ASSERT_TRUE(rebootescrow->storeKey(KEY_1).isOk());
+    ASSERT_TRUE(rebootescrow->storeKey(KEY_2).isOk());
+
+    std::vector<uint8_t> actualKey;
+    ASSERT_TRUE(rebootescrow->retrieveKey(&actualKey).isOk());
+    EXPECT_EQ(actualKey, KEY_2);
+}
+
+TEST_P(RebootEscrowAidlTest, StoreEmpty_AfterGetEmptyKey_Success) {
+    SKIP_UNSUPPORTED;
+
+    rebootescrow->storeKey(KEY_1);
+    rebootescrow->storeKey(EMPTY_KEY);
+
+    std::vector<uint8_t> actualKey;
+    ASSERT_TRUE(rebootescrow->retrieveKey(&actualKey).isOk());
+    EXPECT_EQ(actualKey, EMPTY_KEY);
+}
+
+INSTANTIATE_TEST_SUITE_P(
+        RebootEscrow, RebootEscrowAidlTest,
+        testing::ValuesIn(android::getAidlHalInstanceNames(IRebootEscrow::descriptor)),
+        android::PrintInstanceNameToString);
diff --git a/sensors/1.0/default/OWNERS b/sensors/1.0/default/OWNERS
index 2031d84..90c2330 100644
--- a/sensors/1.0/default/OWNERS
+++ b/sensors/1.0/default/OWNERS
@@ -1,2 +1,3 @@
+arthuri@google.com
 bduddie@google.com
-bstack@google.com
+stange@google.com
diff --git a/sensors/1.0/vts/functional/OWNERS b/sensors/1.0/vts/functional/OWNERS
index 759d87b..892da15 100644
--- a/sensors/1.0/vts/functional/OWNERS
+++ b/sensors/1.0/vts/functional/OWNERS
@@ -1,6 +1,7 @@
 # Sensors team
+arthuri@google.com
 bduddie@google.com
-bstack@google.com
+stange@google.com
 
 # VTS team
 trong@google.com
diff --git a/sensors/2.0/default/OWNERS b/sensors/2.0/default/OWNERS
index 2031d84..90c2330 100644
--- a/sensors/2.0/default/OWNERS
+++ b/sensors/2.0/default/OWNERS
@@ -1,2 +1,3 @@
+arthuri@google.com
 bduddie@google.com
-bstack@google.com
+stange@google.com
diff --git a/sensors/2.0/vts/functional/OWNERS b/sensors/2.0/vts/functional/OWNERS
index 759d87b..892da15 100644
--- a/sensors/2.0/vts/functional/OWNERS
+++ b/sensors/2.0/vts/functional/OWNERS
@@ -1,6 +1,7 @@
 # Sensors team
+arthuri@google.com
 bduddie@google.com
-bstack@google.com
+stange@google.com
 
 # VTS team
 trong@google.com
diff --git a/sensors/2.0/vts/functional/SensorsHidlEnvironmentV2_0.cpp b/sensors/2.0/vts/functional/SensorsHidlEnvironmentV2_0.cpp
index 2071c5a..81db5a0 100644
--- a/sensors/2.0/vts/functional/SensorsHidlEnvironmentV2_0.cpp
+++ b/sensors/2.0/vts/functional/SensorsHidlEnvironmentV2_0.cpp
@@ -129,8 +129,8 @@
 
 void SensorsHidlEnvironmentV2_0::startPollingThread() {
     mStopThread = false;
-    mPollThread = std::thread(pollingThread, this);
     mEvents.reserve(MAX_RECEIVE_BUFFER_EVENT_COUNT);
+    mPollThread = std::thread(pollingThread, this);
 }
 
 void SensorsHidlEnvironmentV2_0::readEvents() {
diff --git a/sensors/common/vts/OWNERS b/sensors/common/vts/OWNERS
index 759d87b..892da15 100644
--- a/sensors/common/vts/OWNERS
+++ b/sensors/common/vts/OWNERS
@@ -1,6 +1,7 @@
 # Sensors team
+arthuri@google.com
 bduddie@google.com
-bstack@google.com
+stange@google.com
 
 # VTS team
 trong@google.com
diff --git a/sensors/common/vts/utils/OWNERS b/sensors/common/vts/utils/OWNERS
index 759d87b..892da15 100644
--- a/sensors/common/vts/utils/OWNERS
+++ b/sensors/common/vts/utils/OWNERS
@@ -1,6 +1,7 @@
 # Sensors team
+arthuri@google.com
 bduddie@google.com
-bstack@google.com
+stange@google.com
 
 # VTS team
 trong@google.com
diff --git a/soundtrigger/2.3/Android.bp b/soundtrigger/2.3/Android.bp
new file mode 100644
index 0000000..3253a86
--- /dev/null
+++ b/soundtrigger/2.3/Android.bp
@@ -0,0 +1,22 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.soundtrigger@2.3",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "types.hal",
+        "ISoundTriggerHw.hal",
+    ],
+    interfaces: [
+        "android.hardware.audio.common@2.0",
+        "android.hardware.soundtrigger@2.0",
+        "android.hardware.soundtrigger@2.1",
+        "android.hardware.soundtrigger@2.2",
+        "android.hidl.base@1.0",
+        "android.hidl.safe_union@1.0",
+    ],
+    gen_java: true,
+}
diff --git a/soundtrigger/2.3/ISoundTriggerHw.hal b/soundtrigger/2.3/ISoundTriggerHw.hal
new file mode 100644
index 0000000..270b00e
--- /dev/null
+++ b/soundtrigger/2.3/ISoundTriggerHw.hal
@@ -0,0 +1,122 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.soundtrigger@2.3;
+
+import @2.0::SoundModelHandle;
+import @2.0::ISoundTriggerHwCallback.CallbackCookie;
+import @2.2::ISoundTriggerHw;
+import @2.1::ISoundTriggerHwCallback;
+
+/**
+ * SoundTrigger HAL interface. Used for hardware recognition of hotwords
+ * and other sounds.
+ */
+interface ISoundTriggerHw extends @2.2::ISoundTriggerHw {
+
+    /**
+     * Retrieve extended implementation properties.
+     * The returned properties includes what is returned from the
+     * getProperties along with expanded implementation details.
+     *
+     * @return retval Operation completion status: 0 in case of success,
+     *                -ENODEV in case of initialization error.
+     * @return properties A Properties structure containing implementation
+     *                    description and capabilities.
+     */
+    getProperties_2_3() generates (int32_t retval, Properties properties);
+
+    /**
+     * Start recognition on a given model. Only one recognition active
+     * at a time per model. Once recognition succeeds or fails, the callback
+     * associated with the model handle is called.
+     *
+     * Must have the exact same semantics as startRecognition from
+     * ISoundTriggerHw@2.1 except that the RecognitionConfig includes audio
+     * capabilities applied when the recognition is active.
+     *
+     * @param modelHandle the handle of the sound model to use for recognition
+     * @param config A RecognitionConfig structure containing attributes of the
+     *     recognition to perform
+     * @return retval Operation completion status: 0 in case of success,
+     *     -EINVAL in case of invalid recognition attributes,
+     *     -ENOSYS in case of invalid model handle,
+     *     -ENOMEM in case of memory allocation failure,
+     *     -ENODEV in case of initialization error.
+     */
+    startRecognition_2_3(SoundModelHandle modelHandle, RecognitionConfig config)
+            generates (int32_t retval);
+
+    /**
+     * Set a model specific parameter with the given value. This parameter
+     * will keep its value for the duration the model is loaded regardless of starting and stopping
+     * recognition. Once the model is unloaded, the value will be lost.
+     * It is expected to check if the handle supports the parameter via the queryParameter
+     * API prior to calling this method.
+     *
+     * @param modelHandle The sound model handle indicating which model to modify parameters
+     * @param modelParam Parameter to set which will be validated against the
+     *                   ModelParameter type. Not putting ModelParameter type
+     *                   directly in the definition and validating internally
+     *                   allows for forward compatibility.
+     * @param value The value to set for the given model parameter
+     * @return status Operation completion status: 0 in case of success,
+     *                -ENODEV if the native service cannot be reached
+     *                -EINVAL invalid input parameter
+     */
+    setParameter(SoundModelHandle modelHandle, ModelParameter modelParam, int32_t value)
+            generates (int32_t status);
+
+    /**
+     * Get a model specific parameter. This parameter will keep its value
+     * for the duration the model is loaded regardless of starting and stopping recognition.
+     * Once the model is unloaded, the value will be lost. If the value is not set, a default
+     * value is returned. See ModelParameter for parameter default values.
+     * It is expected to check if the handle supports the parameter via the queryParameter
+     * API prior to calling this method.
+     *
+     * @param modelHandle The sound model associated with given modelParam
+     * @param modelParam Parameter to set which will be validated against the
+     *                   ModelParameter type. Not putting ModelParameter type
+     *                   directly in the definition and validating internally
+     *                   allows for forward compatibility.
+     * @return status Operation completion status: 0 in case of success,
+     *                -ENODEV if the native service cannot be reached
+     *                -EINVAL invalid input parameter
+     * @return value Value set to the requested parameter. Value is only set when status
+     *                indicates success.
+     */
+    getParameter(SoundModelHandle modelHandle, ModelParameter modelParam)
+            generates (int32_t status, int32_t value);
+
+    /**
+     * Get supported parameter attributes with respect to the provided model
+     * handle. Along with determining the valid range, this API is also used
+     * to determine if a given parameter ID is supported at all by the
+     * modelHandle for use with getParameter and setParameter APIs.
+     *
+     * @param modelHandle The sound model handle indicating which model to query
+     * @param modelParam Parameter to set which will be validated against the
+     *                   ModelParameter type
+     * @return status Operation completion status: 0 in case of success
+     *                -ENODEV if the native service cannot be reached
+     *                -EINVAL invalid input parameter
+     * @return retval ModelParameter structure indicating supported attributes
+     *                of the parameter for the given model handle
+     */
+    queryParameter(SoundModelHandle modelHandle, ModelParameter modelParam)
+            generates (int32_t status, OptionalModelParameterRange retval);
+};
diff --git a/soundtrigger/2.3/default/Android.bp b/soundtrigger/2.3/default/Android.bp
new file mode 100644
index 0000000..be2c8b0
--- /dev/null
+++ b/soundtrigger/2.3/default/Android.bp
@@ -0,0 +1,37 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+cc_library_shared {
+    name: "android.hardware.soundtrigger@2.3-impl",
+    relative_install_path: "hw",
+    vendor: true,
+    srcs: [
+        "SoundTriggerHw.cpp",
+    ],
+    shared_libs: [
+        "libhidlbase",
+        "liblog",
+        "libhidlmemory",
+        "libutils",
+        "libhardware",
+        "android.hardware.soundtrigger@2.0",
+        "android.hardware.soundtrigger@2.0-core",
+        "android.hardware.soundtrigger@2.1",
+        "android.hardware.soundtrigger@2.2",
+        "android.hardware.soundtrigger@2.3",
+        "android.hidl.allocator@1.0",
+        "android.hidl.memory@1.0",
+    ],
+}
diff --git a/soundtrigger/2.3/default/SoundTriggerHw.cpp b/soundtrigger/2.3/default/SoundTriggerHw.cpp
new file mode 100644
index 0000000..d3136b9
--- /dev/null
+++ b/soundtrigger/2.3/default/SoundTriggerHw.cpp
@@ -0,0 +1,920 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#define LOG_TAG "SoundTriggerHw"
+
+#include "SoundTriggerHw.h"
+
+#include <android/hidl/allocator/1.0/IAllocator.h>
+#include <android/log.h>
+#include <hidlmemory/mapping.h>
+#include <utility>
+
+using android::hardware::hidl_memory;
+using android::hidl::allocator::V1_0::IAllocator;
+using android::hidl::memory::V1_0::IMemory;
+
+namespace android {
+namespace hardware {
+namespace soundtrigger {
+namespace V2_3 {
+namespace implementation {
+
+/**
+ * According to the HIDL C++ Users Guide: client and server implementations
+ * should never directly refer to anything other than the interface header
+ * generated from the HIDL definition file (ie. ISoundTriggerHw.hal), so
+ * this V2_3 implementation copies the previous implementations and
+ * then adds the new implementation.
+ */
+
+// Begin V2_0 implementation, copied from
+// hardware/interfaces/soundtrigger/2.0/default/SoundTriggerHalImpl.cpp
+
+// static
+void soundModelCallback_(struct sound_trigger_model_event* halEvent, void* cookie) {
+    if (halEvent == NULL) {
+        ALOGW("soundModelCallback called with NULL event");
+        return;
+    }
+    sp<SoundTriggerHw::SoundModelClient> client =
+            wp<SoundTriggerHw::SoundModelClient>(
+                    static_cast<SoundTriggerHw::SoundModelClient*>(cookie))
+                    .promote();
+    if (client == 0) {
+        ALOGW("soundModelCallback called on stale client");
+        return;
+    }
+    if (halEvent->model != client->getHalHandle()) {
+        ALOGW("soundModelCallback call with wrong handle %d on client with handle %d",
+              (int)halEvent->model, (int)client->getHalHandle());
+        return;
+    }
+
+    client->soundModelCallback(halEvent);
+}
+
+// static
+void recognitionCallback_(struct sound_trigger_recognition_event* halEvent, void* cookie) {
+    if (halEvent == NULL) {
+        ALOGW("recognitionCallback call NULL event");
+        return;
+    }
+    sp<SoundTriggerHw::SoundModelClient> client =
+            wp<SoundTriggerHw::SoundModelClient>(
+                    static_cast<SoundTriggerHw::SoundModelClient*>(cookie))
+                    .promote();
+    if (client == 0) {
+        ALOGW("recognitionCallback called on stale client");
+        return;
+    }
+
+    client->recognitionCallback(halEvent);
+}
+
+Return<void> SoundTriggerHw::getProperties(ISoundTriggerHw::getProperties_cb _hidl_cb) {
+    ALOGV("getProperties() mHwDevice %p", mHwDevice);
+    int ret;
+    struct sound_trigger_properties halProperties;
+    V2_0::ISoundTriggerHw::Properties properties;
+
+    if (mHwDevice == NULL) {
+        ret = -ENODEV;
+        goto exit;
+    }
+
+    ret = mHwDevice->get_properties(mHwDevice, &halProperties);
+
+    convertPropertiesFromHal(&properties, &halProperties);
+
+    ALOGV("getProperties implementor %s recognitionModes %08x", properties.implementor.c_str(),
+          properties.recognitionModes);
+
+exit:
+    _hidl_cb(ret, properties);
+    return Void();
+}
+
+int SoundTriggerHw::doLoadSoundModel(const V2_0::ISoundTriggerHw::SoundModel& soundModel,
+                                     sp<SoundTriggerHw::SoundModelClient> client) {
+    int32_t ret = 0;
+    struct sound_trigger_sound_model* halSoundModel;
+
+    ALOGV("doLoadSoundModel() data size %zu", soundModel.data.size());
+
+    if (mHwDevice == NULL) {
+        ret = -ENODEV;
+        goto exit;
+    }
+
+    halSoundModel = convertSoundModelToHal(&soundModel);
+    if (halSoundModel == NULL) {
+        ret = -EINVAL;
+        goto exit;
+    }
+
+    sound_model_handle_t halHandle;
+    ret = mHwDevice->load_sound_model(mHwDevice, halSoundModel, soundModelCallback_, client.get(),
+                                      &halHandle);
+
+    free(halSoundModel);
+
+    if (ret != 0) {
+        goto exit;
+    }
+
+    client->setHalHandle(halHandle);
+    {
+        AutoMutex lock(mLock);
+        mClients.add(client->getId(), client);
+    }
+
+exit:
+    return ret;
+}
+
+Return<void> SoundTriggerHw::loadSoundModel(const V2_0::ISoundTriggerHw::SoundModel& soundModel,
+                                            const sp<V2_0::ISoundTriggerHwCallback>& callback,
+                                            V2_0::ISoundTriggerHwCallback::CallbackCookie cookie,
+                                            ISoundTriggerHw::loadSoundModel_cb _hidl_cb) {
+    sp<SoundTriggerHw::SoundModelClient> client =
+            new SoundModelClient_2_0(nextUniqueModelId(), cookie, callback);
+    _hidl_cb(doLoadSoundModel(soundModel, client), client->getId());
+    return Void();
+}
+
+Return<void> SoundTriggerHw::loadPhraseSoundModel(
+        const V2_0::ISoundTriggerHw::PhraseSoundModel& soundModel,
+        const sp<V2_0::ISoundTriggerHwCallback>& callback,
+        V2_0::ISoundTriggerHwCallback::CallbackCookie cookie,
+        ISoundTriggerHw::loadPhraseSoundModel_cb _hidl_cb) {
+    sp<SoundTriggerHw::SoundModelClient> client =
+            new SoundModelClient_2_0(nextUniqueModelId(), cookie, callback);
+    _hidl_cb(doLoadSoundModel((const V2_0::ISoundTriggerHw::SoundModel&)soundModel, client),
+             client->getId());
+    return Void();
+}
+
+Return<int32_t> SoundTriggerHw::unloadSoundModel(int32_t modelHandle) {
+    int32_t ret;
+    sp<SoundTriggerHw::SoundModelClient> client;
+
+    if (mHwDevice == NULL) {
+        ret = -ENODEV;
+        goto exit;
+    }
+
+    {
+        AutoMutex lock(mLock);
+        client = mClients.valueFor(modelHandle);
+        if (client == 0) {
+            ret = -ENOSYS;
+            goto exit;
+        }
+    }
+
+    ret = mHwDevice->unload_sound_model(mHwDevice, client->getHalHandle());
+
+    mClients.removeItem(modelHandle);
+
+exit:
+    return ret;
+}
+
+Return<int32_t> SoundTriggerHw::startRecognition(
+        int32_t modelHandle, const V2_0::ISoundTriggerHw::RecognitionConfig& config,
+        const sp<V2_0::ISoundTriggerHwCallback>& /* callback */, int32_t /* cookie */) {
+    int32_t ret;
+    sp<SoundTriggerHw::SoundModelClient> client;
+    struct sound_trigger_recognition_config* halConfig;
+
+    if (mHwDevice == NULL) {
+        ret = -ENODEV;
+        goto exit;
+    }
+
+    {
+        AutoMutex lock(mLock);
+        client = mClients.valueFor(modelHandle);
+        if (client == 0) {
+            ret = -ENOSYS;
+            goto exit;
+        }
+    }
+
+    halConfig =
+            convertRecognitionConfigToHal((const V2_0::ISoundTriggerHw::RecognitionConfig*)&config);
+
+    if (halConfig == NULL) {
+        ret = -EINVAL;
+        goto exit;
+    }
+    ret = mHwDevice->start_recognition(mHwDevice, client->getHalHandle(), halConfig,
+                                       recognitionCallback_, client.get());
+
+    free(halConfig);
+
+exit:
+    return ret;
+}
+
+Return<int32_t> SoundTriggerHw::stopRecognition(int32_t modelHandle) {
+    int32_t ret;
+    sp<SoundTriggerHw::SoundModelClient> client;
+    if (mHwDevice == NULL) {
+        ret = -ENODEV;
+        goto exit;
+    }
+
+    {
+        AutoMutex lock(mLock);
+        client = mClients.valueFor(modelHandle);
+        if (client == 0) {
+            ret = -ENOSYS;
+            goto exit;
+        }
+    }
+
+    ret = mHwDevice->stop_recognition(mHwDevice, client->getHalHandle());
+
+exit:
+    return ret;
+}
+
+Return<int32_t> SoundTriggerHw::stopAllRecognitions() {
+    int32_t ret;
+    if (mHwDevice == NULL) {
+        ret = -ENODEV;
+        goto exit;
+    }
+
+    ret = mHwDevice->stop_all_recognitions(mHwDevice);
+
+exit:
+    return ret;
+}
+
+SoundTriggerHw::SoundTriggerHw() : mModuleName("primary"), mHwDevice(NULL), mNextModelId(1) {}
+
+void SoundTriggerHw::onFirstRef() {
+    const hw_module_t* mod;
+    int rc;
+
+    rc = hw_get_module_by_class(SOUND_TRIGGER_HARDWARE_MODULE_ID, mModuleName, &mod);
+    if (rc != 0) {
+        ALOGE("couldn't load sound trigger module %s.%s (%s)", SOUND_TRIGGER_HARDWARE_MODULE_ID,
+              mModuleName, strerror(-rc));
+        return;
+    }
+    rc = sound_trigger_hw_device_open(mod, &mHwDevice);
+    if (rc != 0) {
+        ALOGE("couldn't open sound trigger hw device in %s.%s (%s)",
+              SOUND_TRIGGER_HARDWARE_MODULE_ID, mModuleName, strerror(-rc));
+        mHwDevice = NULL;
+        return;
+    }
+    if (mHwDevice->common.version != SOUND_TRIGGER_DEVICE_API_VERSION_1_3) {
+        ALOGE("wrong sound trigger hw device version %04x", mHwDevice->common.version);
+        sound_trigger_hw_device_close(mHwDevice);
+        mHwDevice = NULL;
+        return;
+    }
+
+    ALOGI("onFirstRef() mModuleName %s mHwDevice %p", mModuleName, mHwDevice);
+}
+
+SoundTriggerHw::~SoundTriggerHw() {
+    if (mHwDevice != NULL) {
+        sound_trigger_hw_device_close(mHwDevice);
+    }
+}
+
+uint32_t SoundTriggerHw::nextUniqueModelId() {
+    uint32_t modelId = 0;
+    {
+        AutoMutex lock(mLock);
+        do {
+            modelId = atomic_fetch_add_explicit(&mNextModelId, (uint_fast32_t)1,
+                                                memory_order_acq_rel);
+        } while (mClients.valueFor(modelId) != 0 && modelId != 0);
+    }
+    LOG_ALWAYS_FATAL_IF(modelId == 0, "wrap around in sound model IDs, num loaded models %zu",
+                        mClients.size());
+    return modelId;
+}
+
+void SoundTriggerHw::convertUuidFromHal(Uuid* uuid, const sound_trigger_uuid_t* halUuid) {
+    uuid->timeLow = halUuid->timeLow;
+    uuid->timeMid = halUuid->timeMid;
+    uuid->versionAndTimeHigh = halUuid->timeHiAndVersion;
+    uuid->variantAndClockSeqHigh = halUuid->clockSeq;
+    memcpy(&uuid->node[0], &halUuid->node[0], 6);
+}
+
+void SoundTriggerHw::convertUuidToHal(sound_trigger_uuid_t* halUuid, const Uuid* uuid) {
+    halUuid->timeLow = uuid->timeLow;
+    halUuid->timeMid = uuid->timeMid;
+    halUuid->timeHiAndVersion = uuid->versionAndTimeHigh;
+    halUuid->clockSeq = uuid->variantAndClockSeqHigh;
+    memcpy(&halUuid->node[0], &uuid->node[0], 6);
+}
+
+void SoundTriggerHw::convertPropertiesFromHal(
+        V2_0::ISoundTriggerHw::Properties* properties,
+        const struct sound_trigger_properties* halProperties) {
+    properties->implementor = halProperties->implementor;
+    properties->description = halProperties->description;
+    properties->version = halProperties->version;
+    convertUuidFromHal(&properties->uuid, &halProperties->uuid);
+    properties->maxSoundModels = halProperties->max_sound_models;
+    properties->maxKeyPhrases = halProperties->max_key_phrases;
+    properties->maxUsers = halProperties->max_users;
+    properties->recognitionModes = halProperties->recognition_modes;
+    properties->captureTransition = halProperties->capture_transition;
+    properties->maxBufferMs = halProperties->max_buffer_ms;
+    properties->concurrentCapture = halProperties->concurrent_capture;
+    properties->triggerInEvent = halProperties->trigger_in_event;
+    properties->powerConsumptionMw = halProperties->power_consumption_mw;
+}
+
+void SoundTriggerHw::convertPropertiesFromHal(
+        V2_3::Properties* properties, const struct sound_trigger_properties_header* header) {
+    if (header->version >= SOUND_TRIGGER_DEVICE_API_VERSION_1_3) {
+        const struct sound_trigger_properties_extended_1_3* halProperties =
+                (const struct sound_trigger_properties_extended_1_3*)header;
+        convertPropertiesFromHal(&properties->base, &halProperties->base);
+        properties->supportedModelArch = halProperties->supported_model_arch;
+        properties->audioCapabilities = halProperties->audio_capabilities;
+    }
+}
+
+void SoundTriggerHw::convertTriggerPhraseToHal(struct sound_trigger_phrase* halTriggerPhrase,
+                                               const ISoundTriggerHw::Phrase* triggerPhrase) {
+    halTriggerPhrase->id = triggerPhrase->id;
+    halTriggerPhrase->recognition_mode = triggerPhrase->recognitionModes;
+    unsigned int i;
+
+    halTriggerPhrase->num_users =
+            std::min((int)triggerPhrase->users.size(), SOUND_TRIGGER_MAX_USERS);
+    for (i = 0; i < halTriggerPhrase->num_users; i++) {
+        halTriggerPhrase->users[i] = triggerPhrase->users[i];
+    }
+
+    strlcpy(halTriggerPhrase->locale, triggerPhrase->locale.c_str(), SOUND_TRIGGER_MAX_LOCALE_LEN);
+    strlcpy(halTriggerPhrase->text, triggerPhrase->text.c_str(), SOUND_TRIGGER_MAX_STRING_LEN);
+}
+
+struct sound_trigger_sound_model* SoundTriggerHw::convertSoundModelToHal(
+        const V2_0::ISoundTriggerHw::SoundModel* soundModel) {
+    struct sound_trigger_sound_model* halModel = NULL;
+    if (soundModel->type == V2_0::SoundModelType::KEYPHRASE) {
+        size_t allocSize =
+                sizeof(struct sound_trigger_phrase_sound_model) + soundModel->data.size();
+        struct sound_trigger_phrase_sound_model* halKeyPhraseModel =
+                static_cast<struct sound_trigger_phrase_sound_model*>(malloc(allocSize));
+        LOG_ALWAYS_FATAL_IF(halKeyPhraseModel == NULL,
+                            "malloc failed for size %zu in convertSoundModelToHal PHRASE",
+                            allocSize);
+
+        const V2_0::ISoundTriggerHw::PhraseSoundModel* keyPhraseModel =
+                reinterpret_cast<const V2_0::ISoundTriggerHw::PhraseSoundModel*>(soundModel);
+
+        size_t i;
+        for (i = 0; i < keyPhraseModel->phrases.size() && i < SOUND_TRIGGER_MAX_PHRASES; i++) {
+            convertTriggerPhraseToHal(&halKeyPhraseModel->phrases[i], &keyPhraseModel->phrases[i]);
+        }
+        halKeyPhraseModel->num_phrases = (unsigned int)i;
+        halModel = reinterpret_cast<struct sound_trigger_sound_model*>(halKeyPhraseModel);
+        halModel->data_offset = sizeof(struct sound_trigger_phrase_sound_model);
+    } else {
+        size_t allocSize = sizeof(struct sound_trigger_sound_model) + soundModel->data.size();
+        halModel = static_cast<struct sound_trigger_sound_model*>(malloc(allocSize));
+        LOG_ALWAYS_FATAL_IF(halModel == NULL,
+                            "malloc failed for size %zu in convertSoundModelToHal GENERIC",
+                            allocSize);
+
+        halModel->data_offset = sizeof(struct sound_trigger_sound_model);
+    }
+    halModel->type = (sound_trigger_sound_model_type_t)soundModel->type;
+    convertUuidToHal(&halModel->uuid, &soundModel->uuid);
+    convertUuidToHal(&halModel->vendor_uuid, &soundModel->vendorUuid);
+    halModel->data_size = soundModel->data.size();
+    uint8_t* dst = reinterpret_cast<uint8_t*>(halModel) + halModel->data_offset;
+    const uint8_t* src = reinterpret_cast<const uint8_t*>(&soundModel->data[0]);
+    memcpy(dst, src, soundModel->data.size());
+
+    return halModel;
+}
+
+void SoundTriggerHw::convertPhraseRecognitionExtraToHal(
+        struct sound_trigger_phrase_recognition_extra* halExtra,
+        const V2_0::PhraseRecognitionExtra* extra) {
+    halExtra->id = extra->id;
+    halExtra->recognition_modes = extra->recognitionModes;
+    halExtra->confidence_level = extra->confidenceLevel;
+
+    unsigned int i;
+    for (i = 0; i < extra->levels.size() && i < SOUND_TRIGGER_MAX_USERS; i++) {
+        halExtra->levels[i].user_id = extra->levels[i].userId;
+        halExtra->levels[i].level = extra->levels[i].levelPercent;
+    }
+    halExtra->num_levels = i;
+}
+
+struct sound_trigger_recognition_config* SoundTriggerHw::convertRecognitionConfigToHal(
+        const V2_0::ISoundTriggerHw::RecognitionConfig* config) {
+    size_t allocSize = sizeof(struct sound_trigger_recognition_config) + config->data.size();
+    struct sound_trigger_recognition_config* halConfig =
+            static_cast<struct sound_trigger_recognition_config*>(malloc(allocSize));
+
+    LOG_ALWAYS_FATAL_IF(halConfig == NULL,
+                        "malloc failed for size %zu in convertRecognitionConfigToHal", allocSize);
+
+    halConfig->capture_handle = (audio_io_handle_t)config->captureHandle;
+    halConfig->capture_device = (audio_devices_t)config->captureDevice;
+    halConfig->capture_requested = config->captureRequested;
+
+    unsigned int i;
+    for (i = 0; i < config->phrases.size() && i < SOUND_TRIGGER_MAX_PHRASES; i++) {
+        convertPhraseRecognitionExtraToHal(&halConfig->phrases[i], &config->phrases[i]);
+    }
+    halConfig->num_phrases = i;
+
+    halConfig->data_offset = sizeof(struct sound_trigger_recognition_config);
+    halConfig->data_size = config->data.size();
+    uint8_t* dst = reinterpret_cast<uint8_t*>(halConfig) + halConfig->data_offset;
+    const uint8_t* src = reinterpret_cast<const uint8_t*>(&config->data[0]);
+    memcpy(dst, src, config->data.size());
+    return halConfig;
+}
+
+struct sound_trigger_recognition_config_header* SoundTriggerHw::convertRecognitionConfigToHalHeader(
+        const V2_3::RecognitionConfig* config) {
+    sp<IMemory> memory;
+    const V2_1::ISoundTriggerHw::RecognitionConfig* config_2_1 = &config->base;
+    const V2_0::ISoundTriggerHw::RecognitionConfig* config_2_0 = &config_2_1->header;
+
+    size_t allocSize =
+            sizeof(struct sound_trigger_recognition_config_extended_1_3) + config_2_1->data.size();
+    struct sound_trigger_recognition_config_extended_1_3* halConfigExtended =
+            static_cast<struct sound_trigger_recognition_config_extended_1_3*>(malloc(allocSize));
+    LOG_ALWAYS_FATAL_IF(halConfigExtended == nullptr,
+                        "malloc failed for size %zu in convertRecognitionConfigToHalHeader",
+                        allocSize);
+    halConfigExtended->header.version = SOUND_TRIGGER_DEVICE_API_VERSION_1_3;
+    halConfigExtended->header.size = allocSize;
+
+    struct sound_trigger_recognition_config* halConfigBase = &halConfigExtended->base;
+
+    halConfigBase->capture_handle = (audio_io_handle_t)config_2_0->captureHandle;
+    halConfigBase->capture_device = (audio_devices_t)config_2_0->captureDevice;
+    halConfigBase->capture_requested = config_2_0->captureRequested;
+
+    unsigned int i;
+    for (i = 0; i < config_2_0->phrases.size() && i < SOUND_TRIGGER_MAX_PHRASES; i++) {
+        convertPhraseRecognitionExtraToHal(&halConfigBase->phrases[i], &config_2_0->phrases[i]);
+    }
+    halConfigBase->num_phrases = i;
+
+    halConfigBase->data_offset = sizeof(struct sound_trigger_recognition_config_extended_1_3);
+    halConfigBase->data_size = config_2_1->data.size();
+    if (config_2_1->data.size() != 0) {
+        memory = mapMemory(config_2_1->data);
+        LOG_ALWAYS_FATAL_IF(memory == nullptr,
+                            "failed to map config memory in convertRecognitionConfigToHalHeader");
+        memory->read();
+
+        uint8_t* dst = reinterpret_cast<uint8_t*>(halConfigExtended) + halConfigBase->data_offset;
+        const uint8_t* src = static_cast<const uint8_t*>(static_cast<void*>(memory->getPointer()));
+        memcpy(dst, src, config_2_1->data.size());
+
+        memory->commit();
+    }
+
+    halConfigExtended->audio_capabilities = config->audioCapabilities;
+
+    return &halConfigExtended->header;
+}
+
+// static
+void SoundTriggerHw::convertSoundModelEventFromHal(
+        V2_0::ISoundTriggerHwCallback::ModelEvent* event,
+        const struct sound_trigger_model_event* halEvent) {
+    event->status = (V2_0::ISoundTriggerHwCallback::SoundModelStatus)halEvent->status;
+    // event->model to be remapped by called
+    event->data.setToExternal(const_cast<uint8_t*>(reinterpret_cast<const uint8_t*>(halEvent)) +
+                                      halEvent->data_offset,
+                              halEvent->data_size);
+}
+
+// static
+void SoundTriggerHw::convertPhaseRecognitionEventFromHal(
+        V2_0::ISoundTriggerHwCallback::PhraseRecognitionEvent* event,
+        const struct sound_trigger_phrase_recognition_event* halEvent) {
+    event->phraseExtras.resize(halEvent->num_phrases);
+    for (unsigned int i = 0; i < halEvent->num_phrases; i++) {
+        convertPhraseRecognitionExtraFromHal(&event->phraseExtras[i], &halEvent->phrase_extras[i]);
+    }
+    convertRecognitionEventFromHal(&event->common, &halEvent->common);
+}
+
+// static
+void SoundTriggerHw::convertRecognitionEventFromHal(
+        V2_0::ISoundTriggerHwCallback::RecognitionEvent* event,
+        const struct sound_trigger_recognition_event* halEvent) {
+    event->status = static_cast<V2_0::ISoundTriggerHwCallback::RecognitionStatus>(halEvent->status);
+    event->type = static_cast<V2_0::SoundModelType>(halEvent->type);
+    // event->model to be remapped by called
+    event->captureAvailable = halEvent->capture_available;
+    event->captureSession = halEvent->capture_session;
+    event->captureDelayMs = halEvent->capture_delay_ms;
+    event->capturePreambleMs = halEvent->capture_preamble_ms;
+    event->triggerInData = halEvent->trigger_in_data;
+    event->audioConfig.sampleRateHz = halEvent->audio_config.sample_rate;
+    event->audioConfig.channelMask =
+            (audio::common::V2_0::AudioChannelMask)halEvent->audio_config.channel_mask;
+    event->audioConfig.format = (audio::common::V2_0::AudioFormat)halEvent->audio_config.format;
+    event->data.setToExternal(const_cast<uint8_t*>(reinterpret_cast<const uint8_t*>(halEvent)) +
+                                      halEvent->data_offset,
+                              halEvent->data_size);
+}
+
+// static
+void SoundTriggerHw::convertPhraseRecognitionExtraFromHal(
+        V2_0::PhraseRecognitionExtra* extra,
+        const struct sound_trigger_phrase_recognition_extra* halExtra) {
+    extra->id = halExtra->id;
+    extra->recognitionModes = halExtra->recognition_modes;
+    extra->confidenceLevel = halExtra->confidence_level;
+
+    extra->levels.resize(halExtra->num_levels);
+    for (unsigned int i = 0; i < halExtra->num_levels; i++) {
+        extra->levels[i].userId = halExtra->levels[i].user_id;
+        extra->levels[i].levelPercent = halExtra->levels[i].level;
+    }
+}
+
+void SoundTriggerHw::SoundModelClient_2_0::recognitionCallback(
+        struct sound_trigger_recognition_event* halEvent) {
+    if (halEvent->type == SOUND_MODEL_TYPE_KEYPHRASE) {
+        V2_0::ISoundTriggerHwCallback::PhraseRecognitionEvent event;
+        convertPhaseRecognitionEventFromHal(
+                &event, reinterpret_cast<sound_trigger_phrase_recognition_event*>(halEvent));
+        event.common.model = mId;
+        mCallback->phraseRecognitionCallback(event, mCookie);
+    } else {
+        V2_0::ISoundTriggerHwCallback::RecognitionEvent event;
+        convertRecognitionEventFromHal(&event, halEvent);
+        event.model = mId;
+        mCallback->recognitionCallback(event, mCookie);
+    }
+}
+
+void SoundTriggerHw::SoundModelClient_2_0::soundModelCallback(
+        struct sound_trigger_model_event* halEvent) {
+    V2_0::ISoundTriggerHwCallback::ModelEvent event;
+    convertSoundModelEventFromHal(&event, halEvent);
+    event.model = mId;
+    mCallback->soundModelCallback(event, mCookie);
+}
+
+// Begin V2_1 implementation, copied from
+// hardware/interfaces/soundtrigger/2.1/default/SoundTriggerHw.cpp
+
+namespace {
+
+// Backs up by the vector with the contents of shared memory.
+// It is assumed that the passed hidl_vector is empty, so it's
+// not cleared if the memory is a null object.
+// The caller needs to keep the returned sp<IMemory> as long as
+// the data is needed.
+std::pair<bool, sp<IMemory>> memoryAsVector(const hidl_memory& m, hidl_vec<uint8_t>* vec) {
+    sp<IMemory> memory;
+    if (m.size() == 0) {
+        return std::make_pair(true, memory);
+    }
+    memory = mapMemory(m);
+    if (memory != nullptr) {
+        memory->read();
+        vec->setToExternal(static_cast<uint8_t*>(static_cast<void*>(memory->getPointer())),
+                           memory->getSize());
+        return std::make_pair(true, memory);
+    }
+    ALOGE("%s: Could not map HIDL memory to IMemory", __func__);
+    return std::make_pair(false, memory);
+}
+
+// Moves the data from the vector into allocated shared memory,
+// emptying the vector.
+// It is assumed that the passed hidl_memory is a null object, so it's
+// not reset if the vector is empty.
+// The caller needs to keep the returned sp<IMemory> as long as
+// the data is needed.
+std::pair<bool, sp<IMemory>> moveVectorToMemory(hidl_vec<uint8_t>* v, hidl_memory* mem) {
+    sp<IMemory> memory;
+    if (v->size() == 0) {
+        return std::make_pair(true, memory);
+    }
+    sp<IAllocator> ashmem = IAllocator::getService("ashmem");
+    if (ashmem == 0) {
+        ALOGE("Failed to retrieve ashmem allocator service");
+        return std::make_pair(false, memory);
+    }
+    bool success = false;
+    Return<void> r = ashmem->allocate(v->size(), [&](bool s, const hidl_memory& m) {
+        success = s;
+        if (success) *mem = m;
+    });
+    if (r.isOk() && success) {
+        memory = hardware::mapMemory(*mem);
+        if (memory != 0) {
+            memory->update();
+            memcpy(memory->getPointer(), v->data(), v->size());
+            memory->commit();
+            v->resize(0);
+            return std::make_pair(true, memory);
+        } else {
+            ALOGE("Failed to map allocated ashmem");
+        }
+    } else {
+        ALOGE("Failed to allocate %llu bytes from ashmem", (unsigned long long)v->size());
+    }
+    return std::make_pair(false, memory);
+}
+
+}  // namespace
+
+Return<void> SoundTriggerHw::loadSoundModel_2_1(
+        const V2_1::ISoundTriggerHw::SoundModel& soundModel,
+        const sp<V2_1::ISoundTriggerHwCallback>& callback, int32_t cookie,
+        V2_1::ISoundTriggerHw::loadSoundModel_2_1_cb _hidl_cb) {
+    // It is assumed that legacy data vector is empty, thus making copy is cheap.
+    V2_0::ISoundTriggerHw::SoundModel soundModel_2_0(soundModel.header);
+    auto result = memoryAsVector(soundModel.data, &soundModel_2_0.data);
+    if (result.first) {
+        sp<SoundModelClient> client =
+                new SoundModelClient_2_1(nextUniqueModelId(), cookie, callback);
+        _hidl_cb(doLoadSoundModel(soundModel_2_0, client), client->getId());
+        return Void();
+    }
+    _hidl_cb(-ENOMEM, 0);
+    return Void();
+}
+
+Return<void> SoundTriggerHw::loadPhraseSoundModel_2_1(
+        const V2_1::ISoundTriggerHw::PhraseSoundModel& soundModel,
+        const sp<V2_1::ISoundTriggerHwCallback>& callback, int32_t cookie,
+        V2_1::ISoundTriggerHw::loadPhraseSoundModel_2_1_cb _hidl_cb) {
+    V2_0::ISoundTriggerHw::PhraseSoundModel soundModel_2_0;
+    // It is assumed that legacy data vector is empty, thus making copy is cheap.
+    soundModel_2_0.common = soundModel.common.header;
+    // Avoid copying phrases data.
+    soundModel_2_0.phrases.setToExternal(
+            const_cast<V2_0::ISoundTriggerHw::Phrase*>(soundModel.phrases.data()),
+            soundModel.phrases.size());
+    auto result = memoryAsVector(soundModel.common.data, &soundModel_2_0.common.data);
+    if (result.first) {
+        sp<SoundModelClient> client =
+                new SoundModelClient_2_1(nextUniqueModelId(), cookie, callback);
+        _hidl_cb(doLoadSoundModel((const V2_0::ISoundTriggerHw::SoundModel&)soundModel_2_0, client),
+                 client->getId());
+        return Void();
+    }
+    _hidl_cb(-ENOMEM, 0);
+    return Void();
+}
+
+Return<int32_t> SoundTriggerHw::startRecognition_2_1(
+        int32_t modelHandle, const V2_1::ISoundTriggerHw::RecognitionConfig& config,
+        const sp<V2_1::ISoundTriggerHwCallback>& callback, int32_t cookie) {
+    // It is assumed that legacy data vector is empty, thus making copy is cheap.
+    V2_0::ISoundTriggerHw::RecognitionConfig config_2_0(config.header);
+    auto result = memoryAsVector(config.data, &config_2_0.data);
+    return result.first ? startRecognition(modelHandle, config_2_0, callback, cookie)
+                        : Return<int32_t>(-ENOMEM);
+}
+
+void SoundTriggerHw::SoundModelClient_2_1::recognitionCallback(
+        struct sound_trigger_recognition_event* halEvent) {
+    if (halEvent->type == SOUND_MODEL_TYPE_KEYPHRASE) {
+        V2_0::ISoundTriggerHwCallback::PhraseRecognitionEvent event_2_0;
+        convertPhaseRecognitionEventFromHal(
+                &event_2_0, reinterpret_cast<sound_trigger_phrase_recognition_event*>(halEvent));
+        event_2_0.common.model = mId;
+        V2_1::ISoundTriggerHwCallback::PhraseRecognitionEvent event;
+        event.phraseExtras.setToExternal(event_2_0.phraseExtras.data(),
+                                         event_2_0.phraseExtras.size());
+        auto result = moveVectorToMemory(&event_2_0.common.data, &event.common.data);
+        if (result.first) {
+            // The data vector is now empty, thus copying is cheap.
+            event.common.header = event_2_0.common;
+            mCallback->phraseRecognitionCallback_2_1(event, mCookie);
+        }
+    } else {
+        V2_1::ISoundTriggerHwCallback::RecognitionEvent event;
+        convertRecognitionEventFromHal(&event.header, halEvent);
+        event.header.model = mId;
+        auto result = moveVectorToMemory(&event.header.data, &event.data);
+        if (result.first) {
+            mCallback->recognitionCallback_2_1(event, mCookie);
+        }
+    }
+}
+
+void SoundTriggerHw::SoundModelClient_2_1::soundModelCallback(
+        struct sound_trigger_model_event* halEvent) {
+    V2_1::ISoundTriggerHwCallback::ModelEvent event;
+    convertSoundModelEventFromHal(&event.header, halEvent);
+    event.header.model = mId;
+    auto result = moveVectorToMemory(&event.header.data, &event.data);
+    if (result.first) {
+        mCallback->soundModelCallback_2_1(event, mCookie);
+    }
+}
+
+// Begin V2_2 implementation, copied from
+// hardware/interfaces/soundtrigger/2.2/default/SoundTriggerHw.cpp
+
+Return<int32_t> SoundTriggerHw::getModelState(int32_t modelHandle) {
+    sp<SoundModelClient> client;
+    if (mHwDevice == NULL) {
+        return -ENODEV;
+    }
+
+    {
+        AutoMutex lock(mLock);
+        client = mClients.valueFor(modelHandle);
+        if (client == 0) {
+            return -ENOSYS;
+        }
+    }
+
+    return mHwDevice->get_model_state(mHwDevice, client->getHalHandle());
+}
+
+// Begin V2_3 implementation
+
+Return<void> SoundTriggerHw::getProperties_2_3(ISoundTriggerHw::getProperties_2_3_cb _hidl_cb) {
+    ALOGV("getProperties_2_3() mHwDevice %p", mHwDevice);
+    int ret = 0;
+    V2_3::Properties properties;
+    const struct sound_trigger_properties_header* header;
+
+    if (mHwDevice == NULL) {
+        ret = -ENODEV;
+        goto exit;
+    }
+
+    header = mHwDevice->get_properties_extended(mHwDevice);
+
+    convertPropertiesFromHal(&properties, header);
+
+    ALOGV("getProperties_2_3 implementor %s supportedModelArch %s",
+          properties.base.implementor.c_str(), properties.supportedModelArch.c_str());
+
+exit:
+    _hidl_cb(ret, properties);
+    return Void();
+}
+
+Return<int32_t> SoundTriggerHw::startRecognition_2_3(int32_t modelHandle,
+                                                     const V2_3::RecognitionConfig& config) {
+    int32_t ret;
+    sp<SoundTriggerHw::SoundModelClient> client;
+    struct sound_trigger_recognition_config_header* header;
+
+    if (mHwDevice == NULL) {
+        ret = -ENODEV;
+        goto exit;
+    }
+
+    {
+        AutoMutex lock(mLock);
+        client = mClients.valueFor(modelHandle);
+        if (client == 0) {
+            ret = -ENOSYS;
+            goto exit;
+        }
+    }
+
+    header = convertRecognitionConfigToHalHeader(&config);
+
+    if (header == nullptr) {
+        ret = -EINVAL;
+        goto exit;
+    }
+    ret = mHwDevice->start_recognition_extended(mHwDevice, client->getHalHandle(), header,
+                                                recognitionCallback_, client.get());
+
+    free(header);
+
+exit:
+    return ret;
+}
+
+Return<int32_t> SoundTriggerHw::setParameter(V2_0::SoundModelHandle modelHandle,
+                                             ModelParameter modelParam, int32_t value) {
+    sp<SoundModelClient> client;
+    if (mHwDevice == NULL) {
+        return -ENODEV;
+    }
+
+    {
+        AutoMutex lock(mLock);
+        client = mClients.valueFor(modelHandle);
+        if (client == 0) {
+            return -EINVAL;
+        }
+    }
+
+    return mHwDevice->set_parameter(mHwDevice, client->getHalHandle(),
+                                    convertModelParameterToHal(modelParam), value);
+}
+
+Return<void> SoundTriggerHw::getParameter(V2_0::SoundModelHandle modelHandle,
+                                          ModelParameter modelParam, getParameter_cb _hidl_cb) {
+    sp<SoundModelClient> client;
+    if (mHwDevice == NULL) {
+        _hidl_cb(-ENODEV, 0);
+        return Void();
+    }
+
+    {
+        AutoMutex lock(mLock);
+        client = mClients.valueFor(modelHandle);
+        if (client == 0) {
+            _hidl_cb(-EINVAL, 0);
+            return Void();
+        }
+    }
+
+    int32_t value;
+    int32_t status = mHwDevice->get_parameter(mHwDevice, client->getHalHandle(),
+                                              convertModelParameterToHal(modelParam), &value);
+    _hidl_cb(status, value);
+    return Void();
+}
+
+Return<void> SoundTriggerHw::queryParameter(V2_0::SoundModelHandle modelHandle,
+                                            ModelParameter modelParam, queryParameter_cb _hidl_cb) {
+    OptionalModelParameterRange optionalParamRange;
+    sp<SoundModelClient> client;
+    if (mHwDevice == NULL) {
+        _hidl_cb(-ENODEV, optionalParamRange);
+        return Void();
+    }
+
+    {
+        AutoMutex lock(mLock);
+        client = mClients.valueFor(modelHandle);
+        if (client == 0) {
+            _hidl_cb(-EINVAL, optionalParamRange);
+            return Void();
+        }
+    }
+
+    sound_trigger_model_parameter_range_t paramRange;
+    int32_t status = mHwDevice->query_parameter(
+            mHwDevice, client->getHalHandle(), convertModelParameterToHal(modelParam), &paramRange);
+
+    if (status == 0) {
+        optionalParamRange.range({.start = paramRange.start, .end = paramRange.end});
+    }
+    _hidl_cb(status, optionalParamRange);
+    return Void();
+}
+
+// static
+sound_trigger_model_parameter_t SoundTriggerHw::convertModelParameterToHal(ModelParameter param) {
+    switch (param) {
+        case ModelParameter::THRESHOLD_FACTOR:
+            return MODEL_PARAMETER_THRESHOLD_FACTOR;
+        case ModelParameter::INVALID:
+        default:
+            return MODEL_PARAMETER_INVALID;
+    }
+}
+
+// Methods from ::android::hidl::base::V1_0::IBase follow.
+
+ISoundTriggerHw* HIDL_FETCH_ISoundTriggerHw(const char* /* name */) {
+    return new SoundTriggerHw();
+}
+
+}  // namespace implementation
+}  // namespace V2_3
+}  // namespace soundtrigger
+}  // namespace hardware
+}  // namespace android
diff --git a/soundtrigger/2.3/default/SoundTriggerHw.h b/soundtrigger/2.3/default/SoundTriggerHw.h
new file mode 100644
index 0000000..ccd468c
--- /dev/null
+++ b/soundtrigger/2.3/default/SoundTriggerHw.h
@@ -0,0 +1,214 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_SOUNDTRIGGER_V2_3_SOUNDTRIGGERHW_H
+#define ANDROID_HARDWARE_SOUNDTRIGGER_V2_3_SOUNDTRIGGERHW_H
+
+#include <android/hardware/soundtrigger/2.0/ISoundTriggerHw.h>
+#include <android/hardware/soundtrigger/2.0/ISoundTriggerHwCallback.h>
+#include <android/hardware/soundtrigger/2.3/ISoundTriggerHw.h>
+#include <android/hardware/soundtrigger/2.3/types.h>
+#include <hardware/sound_trigger.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+#include <stdatomic.h>
+#include <system/sound_trigger.h>
+#include <utils/KeyedVector.h>
+#include <utils/threads.h>
+
+namespace android {
+namespace hardware {
+namespace soundtrigger {
+namespace V2_3 {
+namespace implementation {
+
+using ::android::sp;
+using ::android::hardware::hidl_array;
+using ::android::hardware::hidl_memory;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::audio::common::V2_0::Uuid;
+
+/**
+ * According to the HIDL C++ Users Guide: client and server implementations
+ * should never directly refer to anything other than the interface header
+ * generated from the HIDL definition file (ie. ISoundTriggerHw.hal), so
+ * this V2_3 implementation copies the previous implementations and
+ * then adds the new implementation.
+ */
+struct SoundTriggerHw : public ISoundTriggerHw {
+    // Methods from V2_0::ISoundTriggerHw follow.
+    Return<void> getProperties(getProperties_cb _hidl_cb) override;
+    Return<void> loadSoundModel(const V2_0::ISoundTriggerHw::SoundModel& soundModel,
+                                const sp<V2_0::ISoundTriggerHwCallback>& callback, int32_t cookie,
+                                loadSoundModel_cb _hidl_cb) override;
+    Return<void> loadPhraseSoundModel(const V2_0::ISoundTriggerHw::PhraseSoundModel& soundModel,
+                                      const sp<V2_0::ISoundTriggerHwCallback>& callback,
+                                      int32_t cookie, loadPhraseSoundModel_cb _hidl_cb) override;
+    Return<int32_t> unloadSoundModel(int32_t modelHandle) override;
+    Return<int32_t> startRecognition(int32_t modelHandle,
+                                     const V2_0::ISoundTriggerHw::RecognitionConfig& config,
+                                     const sp<V2_0::ISoundTriggerHwCallback>& callback,
+                                     int32_t cookie) override;
+    Return<int32_t> stopRecognition(int32_t modelHandle) override;
+    Return<int32_t> stopAllRecognitions() override;
+
+    // Methods from V2_1::ISoundTriggerHw follow.
+    Return<void> loadSoundModel_2_1(const V2_1::ISoundTriggerHw::SoundModel& soundModel,
+                                    const sp<V2_1::ISoundTriggerHwCallback>& callback,
+                                    int32_t cookie, loadSoundModel_2_1_cb _hidl_cb) override;
+    Return<void> loadPhraseSoundModel_2_1(const V2_1::ISoundTriggerHw::PhraseSoundModel& soundModel,
+                                          const sp<V2_1::ISoundTriggerHwCallback>& callback,
+                                          int32_t cookie,
+                                          loadPhraseSoundModel_2_1_cb _hidl_cb) override;
+    Return<int32_t> startRecognition_2_1(int32_t modelHandle,
+                                         const V2_1::ISoundTriggerHw::RecognitionConfig& config,
+                                         const sp<V2_1::ISoundTriggerHwCallback>& callback,
+                                         int32_t cookie) override;
+
+    // Methods from V2_2::ISoundTriggerHw follow.
+    Return<int32_t> getModelState(int32_t modelHandle) override;
+
+    // Methods from V2_3::ISoundTriggerHw follow.
+    Return<void> getProperties_2_3(getProperties_2_3_cb _hidl_cb) override;
+    Return<int32_t> startRecognition_2_3(int32_t modelHandle,
+                                         const V2_3::RecognitionConfig& config) override;
+    Return<int32_t> setParameter(V2_0::SoundModelHandle modelHandle, ModelParameter modelParam,
+                                 int32_t value) override;
+    Return<void> getParameter(V2_0::SoundModelHandle modelHandle, ModelParameter modelParam,
+                              ISoundTriggerHw::getParameter_cb _hidl_cb) override;
+    Return<void> queryParameter(V2_0::SoundModelHandle modelHandle, ModelParameter modelParam,
+                                ISoundTriggerHw::queryParameter_cb _hidl_cb) override;
+
+    SoundTriggerHw();
+
+    // Copied from hardware/interfaces/soundtrigger/2.0/default/SoundTriggerHalImpl.h
+
+    /**
+     * Client object holding active handles and callback sctructures. Used for referencing
+     * which models map to which client of the HAL. SoundModelClients are stored in the
+     * mClients object while the model is active.
+     */
+    class SoundModelClient : public RefBase {
+      public:
+        SoundModelClient(uint32_t id, V2_0::ISoundTriggerHwCallback::CallbackCookie cookie)
+            : mId(id), mCookie(cookie) {}
+        virtual ~SoundModelClient() {}
+
+        uint32_t getId() const { return mId; }
+        sound_model_handle_t getHalHandle() const { return mHalHandle; }
+        void setHalHandle(sound_model_handle_t handle) { mHalHandle = handle; }
+
+        virtual void recognitionCallback(struct sound_trigger_recognition_event* halEvent) = 0;
+        virtual void soundModelCallback(struct sound_trigger_model_event* halEvent) = 0;
+
+      protected:
+        const uint32_t mId;
+        sound_model_handle_t mHalHandle;
+        V2_0::ISoundTriggerHwCallback::CallbackCookie mCookie;
+    };
+
+  private:
+    static void convertPhaseRecognitionEventFromHal(
+            V2_0::ISoundTriggerHwCallback::PhraseRecognitionEvent* event,
+            const struct sound_trigger_phrase_recognition_event* halEvent);
+    static void convertRecognitionEventFromHal(
+            V2_0::ISoundTriggerHwCallback::RecognitionEvent* event,
+            const struct sound_trigger_recognition_event* halEvent);
+    static void convertSoundModelEventFromHal(V2_0::ISoundTriggerHwCallback::ModelEvent* event,
+                                              const struct sound_trigger_model_event* halEvent);
+
+    virtual ~SoundTriggerHw();
+
+    uint32_t nextUniqueModelId();
+    int doLoadSoundModel(const V2_0::ISoundTriggerHw::SoundModel& soundModel,
+                         sp<SoundModelClient> client);
+
+    // RefBase
+    void onFirstRef() override;
+
+    class SoundModelClient_2_0 : public SoundModelClient {
+      public:
+        SoundModelClient_2_0(uint32_t id, V2_0::ISoundTriggerHwCallback::CallbackCookie cookie,
+                             sp<V2_0::ISoundTriggerHwCallback> callback)
+            : SoundModelClient(id, cookie), mCallback(callback) {}
+
+        void recognitionCallback(struct sound_trigger_recognition_event* halEvent) override;
+        void soundModelCallback(struct sound_trigger_model_event* halEvent) override;
+
+      private:
+        sp<V2_0::ISoundTriggerHwCallback> mCallback;
+    };
+
+    void convertUuidFromHal(Uuid* uuid, const sound_trigger_uuid_t* halUuid);
+    void convertUuidToHal(sound_trigger_uuid_t* halUuid, const Uuid* uuid);
+    void convertPropertiesFromHal(V2_0::ISoundTriggerHw::Properties* properties,
+                                  const struct sound_trigger_properties* halProperties);
+    void convertPropertiesFromHal(V2_3::Properties* properties,
+                                  const struct sound_trigger_properties_header* header);
+    static sound_trigger_model_parameter_t convertModelParameterToHal(ModelParameter param);
+    void convertTriggerPhraseToHal(struct sound_trigger_phrase* halTriggerPhrase,
+                                   const V2_0::ISoundTriggerHw::Phrase* triggerPhrase);
+    // returned HAL sound model must be freed by caller
+    struct sound_trigger_sound_model* convertSoundModelToHal(
+            const V2_0::ISoundTriggerHw::SoundModel* soundModel);
+    void convertPhraseRecognitionExtraToHal(struct sound_trigger_phrase_recognition_extra* halExtra,
+                                            const V2_0::PhraseRecognitionExtra* extra);
+    // returned recognition config must be freed by caller
+    struct sound_trigger_recognition_config* convertRecognitionConfigToHal(
+            const V2_0::ISoundTriggerHw::RecognitionConfig* config);
+    struct sound_trigger_recognition_config_header* convertRecognitionConfigToHalHeader(
+            const V2_3::RecognitionConfig* config);
+
+    static void convertPhraseRecognitionExtraFromHal(
+            V2_0::PhraseRecognitionExtra* extra,
+            const struct sound_trigger_phrase_recognition_extra* halExtra);
+
+    static void soundModelCallback(struct sound_trigger_model_event* halEvent, void* cookie);
+    static void recognitionCallback(struct sound_trigger_recognition_event* halEvent, void* cookie);
+
+    const char* mModuleName;
+    struct sound_trigger_hw_device* mHwDevice;
+    volatile atomic_uint_fast32_t mNextModelId;
+    DefaultKeyedVector<int32_t, sp<SoundModelClient>> mClients;
+    Mutex mLock;
+
+    // Copied from hardware/interfaces/soundtrigger/2.1/default/SoundTriggerHw.h
+    class SoundModelClient_2_1 : public SoundModelClient {
+      public:
+        SoundModelClient_2_1(uint32_t id, V2_1::ISoundTriggerHwCallback::CallbackCookie cookie,
+                             sp<V2_1::ISoundTriggerHwCallback> callback)
+            : SoundModelClient(id, cookie), mCallback(callback) {}
+
+        void recognitionCallback(struct sound_trigger_recognition_event* halEvent) override;
+        void soundModelCallback(struct sound_trigger_model_event* halEvent) override;
+
+      private:
+        sp<V2_1::ISoundTriggerHwCallback> mCallback;
+    };
+};
+
+extern "C" ISoundTriggerHw* HIDL_FETCH_ISoundTriggerHw(const char* name);
+
+}  // namespace implementation
+}  // namespace V2_3
+}  // namespace soundtrigger
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_SOUNDTRIGGER_V2_2_SOUNDTRIGGERHW_H
diff --git a/soundtrigger/2.3/types.hal b/soundtrigger/2.3/types.hal
new file mode 100644
index 0000000..730f969
--- /dev/null
+++ b/soundtrigger/2.3/types.hal
@@ -0,0 +1,112 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.soundtrigger@2.3;
+
+import android.hidl.safe_union@1.0::Monostate;
+import @2.0::ISoundTriggerHw.Properties;
+import @2.1::ISoundTriggerHw.RecognitionConfig;
+
+/**
+ * AudioCapabilities supported by the implemented HAL
+ * driver.
+ */
+enum AudioCapabilities : uint32_t {
+    /**
+     * If set the underlying module supports AEC.
+     */
+    ECHO_CANCELLATION = 1 << 0,
+    /**
+     * If set, the underlying module supports noise suppression.
+     */
+    NOISE_SUPPRESSION = 1 << 1,
+};
+
+/**
+ * Extended implementation properties providing verbose implementation
+ * details.
+ */
+struct Properties {
+    @2.0::ISoundTriggerHw.Properties base;
+
+    /**
+     * String naming the architecture used for running the supported models.
+     * (eg. DSP architecture)
+     */
+    string supportedModelArch;
+
+    /**
+     * Bit field encoding of the AudioCapabilities
+     * supported by the firmware.
+     */
+    bitfield<AudioCapabilities> audioCapabilities;
+};
+
+/**
+ * Configuration for sound trigger capture session passed to
+ * startRecognition_2_1() method.
+ */
+struct RecognitionConfig {
+    @2.1::ISoundTriggerHw.RecognitionConfig base;
+
+    /**
+     * Bit field encoding of the AudioCapabilities
+     * supported by the firmware.
+     */
+    uint32_t audioCapabilities;
+};
+
+/**
+ * Model specific parameters to be used with parameter set and get APIs
+ */
+enum ModelParameter : int32_t {
+    /**
+     * Placeholder for invalid model parameter used for returning error or
+     * passing an invalid value.
+     */
+    INVALID = -1,
+
+    /**
+     * Controls the sensitivity threshold adjustment factor for a given model.
+     * Negative value corresponds to less sensitive model (high threshold) and
+     * a positive value corresponds to a more sensitive model (low threshold).
+     * Default value is 0.
+     */
+    THRESHOLD_FACTOR = 0
+};
+
+/**
+ * Safe union wrapping ModelParameterRange.
+ * Monostate is used to indicate there is no valid range
+ */
+safe_union OptionalModelParameterRange {
+    Monostate noinit;
+    ModelParameterRange range;
+};
+
+/**
+ * Model specific range support for a given parameter
+ */
+struct ModelParameterRange {
+    /**
+     * start of supported value range inclusive
+     */
+    int32_t start;
+    /**
+     * end of supported value range inclusive
+     */
+    int32_t end;
+};
diff --git a/soundtrigger/2.3/vts/functional/Android.bp b/soundtrigger/2.3/vts/functional/Android.bp
new file mode 100644
index 0000000..e3855fc
--- /dev/null
+++ b/soundtrigger/2.3/vts/functional/Android.bp
@@ -0,0 +1,31 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_test {
+    name: "VtsHalSoundtriggerV2_3TargetTest",
+    defaults: ["VtsHalTargetTestDefaults"],
+    srcs: ["VtsHalSoundtriggerV2_3TargetTest.cpp"],
+    static_libs: [
+        "android.hardware.soundtrigger@2.0",
+        "android.hardware.soundtrigger@2.1",
+        "android.hardware.soundtrigger@2.2",
+        "android.hardware.soundtrigger@2.3",
+    ],
+    test_suites: [
+        "general-tests",
+        "vts-core",
+    ],
+}
diff --git a/soundtrigger/2.3/vts/functional/VtsHalSoundtriggerV2_3TargetTest.cpp b/soundtrigger/2.3/vts/functional/VtsHalSoundtriggerV2_3TargetTest.cpp
new file mode 100644
index 0000000..2d147e4
--- /dev/null
+++ b/soundtrigger/2.3/vts/functional/VtsHalSoundtriggerV2_3TargetTest.cpp
@@ -0,0 +1,90 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "SoundTriggerHidlHalTest"
+
+#include <android-base/logging.h>
+#include <android/hardware/audio/common/2.0/types.h>
+#include <android/hardware/soundtrigger/2.3/ISoundTriggerHw.h>
+#include <android/hardware/soundtrigger/2.3/types.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
+
+using ::android::sp;
+using ::android::hardware::Return;
+using ::android::hardware::soundtrigger::V2_0::RecognitionMode;
+using ::android::hardware::soundtrigger::V2_3::AudioCapabilities;
+using ::android::hardware::soundtrigger::V2_3::ISoundTriggerHw;
+using ::android::hardware::soundtrigger::V2_3::Properties;
+
+/**
+ * Test class holding the instance of the SoundTriggerHW service to test.
+ * The passed parameter is the registered name of the implementing service
+ * supplied by INSTANTIATE_TEST_SUITE_P() call.
+ */
+class SoundTriggerHidlTest : public testing::TestWithParam<std::string> {
+  public:
+    void SetUp() override {
+        soundtrigger = ISoundTriggerHw::getService(GetParam());
+
+        ASSERT_NE(soundtrigger, nullptr);
+        LOG(INFO) << "Test is remote " << soundtrigger->isRemote();
+    }
+
+    sp<ISoundTriggerHw> soundtrigger;
+};
+
+/**
+ * Empty test is in place to ensure service is initalized.
+ * Due to the nature of SoundTrigger HAL providing an interface for
+ * proprietary or vendor specific implementations, limited testing on
+ * individual APIs is possible.
+ */
+TEST_P(SoundTriggerHidlTest, ServiceIsInstantiated) {}
+
+/**
+ * Test ISoundTriggerHw::getProperties_2_3 method
+ *
+ * Verifies that:
+ * - the implementation implements the method
+ * - the method returns no error
+ * - the implementation supports at least one sound model and one key phrase
+ * - the implementation supports at least VOICE_TRIGGER recognition mode
+ */
+TEST_P(SoundTriggerHidlTest, GetProperties_2_3) {
+    Properties halProperties;
+    Return<void> hidlReturn;
+    int ret = -ENODEV;
+
+    hidlReturn = soundtrigger->getProperties_2_3([&](int rc, auto res) {
+        ret = rc;
+        halProperties = res;
+    });
+
+    EXPECT_TRUE(hidlReturn.isOk());
+    EXPECT_EQ(0, ret);
+    EXPECT_GT(halProperties.base.maxSoundModels, 0u);
+    EXPECT_GT(halProperties.base.maxKeyPhrases, 0u);
+    EXPECT_NE(0u, (halProperties.base.recognitionModes & (uint32_t)RecognitionMode::VOICE_TRIGGER));
+    EXPECT_TRUE(halProperties.audioCapabilities <=
+                (AudioCapabilities::ECHO_CANCELLATION | AudioCapabilities::NOISE_SUPPRESSION));
+}
+
+INSTANTIATE_TEST_SUITE_P(
+        PerInstance, SoundTriggerHidlTest,
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(ISoundTriggerHw::descriptor)),
+        android::hardware::PrintInstanceNameToString);
diff --git a/tv/cec/1.0/config/sadConfig.xsd b/tv/cec/1.0/config/sadConfig.xsd
new file mode 100644
index 0000000..7f99311
--- /dev/null
+++ b/tv/cec/1.0/config/sadConfig.xsd
@@ -0,0 +1,86 @@
+<?xml version="1.0"?>
+<!-- Copyright (C) 2019 The Android Open Source Project
+
+         Licensed under the Apache License, Version 2.0 (the "License");
+         you may not use this file except in compliance with the License.
+         You may obtain a copy of the License at
+
+                    http://www.apache.org/licenses/LICENSE-2.0
+
+         Unless required by applicable law or agreed to in writing, software
+         distributed under the License is distributed on an "AS IS" BASIS,
+         WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+         See the License for the specific language governing permissions and
+         limitations under the License.
+-->
+<xs:schema version="1.0"
+           xmlns:xs="http://www.w3.org/2001/XMLSchema">
+    <xs:include schemaLocation="../../../../audio/4.0/config/audio_policy_configuration.xsd"/>
+    <xs:complexType name="config">
+        <xs:annotation>
+            <xs:documentation xml:lang="en">
+                List the config versions supported by Short Audio Descriptor(SAD) config.
+            </xs:documentation>
+        </xs:annotation>
+        <xs:sequence>
+            <xs:element name="device" type="device" minOccurs="0" maxOccurs="unbounded"/>
+        </xs:sequence>
+        <xs:attribute name="version" type="version"/>
+    </xs:complexType>
+    <xs:complexType name="device">
+        <xs:annotation>
+            <xs:documentation xml:lang="en">
+                Device section:
+                There is a list of configurations in this SAD config for all the input audio
+                devices that the current Android device supports.
+                Each device has the following attributes:
+                    "type": type of the audio device.
+                And the following element
+                    <supportedFormat/>: the supported format info of the device. There can be
+                                        multiple formats supported by one audio device.
+            </xs:documentation>
+        </xs:annotation>
+        <xs:sequence>
+            <xs:element name="supportedFormat" type="supportedFormat" minOccurs="0" maxOccurs="unbounded"/>
+        </xs:sequence>
+        <xs:attribute name="type" type="extendableAudioDevice" use="required"/>
+    </xs:complexType>
+    <xs:complexType name="supportedFormat">
+        <xs:annotation>
+            <xs:documentation xml:lang="en">
+                SupportedFormat section:
+                The details of the short audio descriptor of a specific audio format
+                supported by the audio device. Attributes as follows:
+                    "format": format enum of the current supported format.
+                    "descriptor": three-byte short audio descriptor for the given format in hex.
+            </xs:documentation>
+        </xs:annotation>
+        <xs:attribute name="format" type="hdmiAudioFormat" use="required"/>
+        <xs:attribute name="descriptor" type="descriptor" use="required"/>
+    </xs:complexType>
+    <xs:simpleType name="descriptor">
+        <xs:restriction base="xs:string">
+            <xs:pattern value="[a-fA-F0-9]{6}"/>
+        </xs:restriction>
+    </xs:simpleType>
+    <xs:simpleType name="hdmiAudioFormat">
+        <xs:restriction base="xs:string">
+            <xs:enumeration value="AUDIO_FORMAT_NONE"/>
+            <xs:enumeration value="AUDIO_FORMAT_LPCM"/>
+            <xs:enumeration value="AUDIO_FORMAT_DD"/>
+            <xs:enumeration value="AUDIO_FORMAT_MPEG1"/>
+            <xs:enumeration value="AUDIO_FORMAT_MP3"/>
+            <xs:enumeration value="AUDIO_FORMAT_MPEG2"/>
+            <xs:enumeration value="AUDIO_FORMAT_AAC"/>
+            <xs:enumeration value="AUDIO_FORMAT_DTS"/>
+            <xs:enumeration value="AUDIO_FORMAT_ATRAC"/>
+            <xs:enumeration value="AUDIO_FORMAT_ONEBITAUDIO"/>
+            <xs:enumeration value="AUDIO_FORMAT_DDP"/>
+            <xs:enumeration value="AUDIO_FORMAT_DTSHD"/>
+            <xs:enumeration value="AUDIO_FORMAT_TRUEHD"/>
+            <xs:enumeration value="AUDIO_FORMAT_DST"/>
+            <xs:enumeration value="AUDIO_FORMAT_WMAPRO"/>
+        </xs:restriction>
+    </xs:simpleType>
+    <xs:element name="config" type="config"/>
+</xs:schema>
diff --git a/tv/tuner/1.0/IFilter.hal b/tv/tuner/1.0/IFilter.hal
index 94e3c0c..567971f 100644
--- a/tv/tuner/1.0/IFilter.hal
+++ b/tv/tuner/1.0/IFilter.hal
@@ -120,12 +120,13 @@
      * presented by file descripor in the handle as released.
      *
      * @param avMemory A handle associated to the memory for audio or video.
+     * @param avDataId An Id provides additional information for AV data.
      * @return result Result status of the operation.
      *         SUCCESS if successful,
      *         INVALID_ARGUMENT if failed for wrong parameter.
      *         UNKNOWN_ERROR if failed for other reasons.
      */
-    releaseAvHandle(handle avMemory) generates (Result result);
+    releaseAvHandle(handle avMemory, uint64_t avDataId) generates (Result result);
 
     /**
      * Set the filter's data source.
diff --git a/tv/tuner/1.0/IFrontend.hal b/tv/tuner/1.0/IFrontend.hal
index ceda2b3..756ab46 100644
--- a/tv/tuner/1.0/IFrontend.hal
+++ b/tv/tuner/1.0/IFrontend.hal
@@ -20,15 +20,16 @@
 import ILnb;
 
 /**
- * A Tuner Frontend is used to tune to a frequency and lock signal. It provide
- * live data feed to Tuner Demux interface.
+ * A Tuner Frontend is used to tune to a frequency and lock signal.
+ *
+ * IFrontend provides a bit stream to the Tuner Demux interface.
  */
 interface IFrontend {
     /**
-     * Set the callback
+     * Set the frontend callback.
      *
-     * It is used by the client to receive events from the Frontend.
-     * Only one callback for one Frontend instance is supported. The callback
+     * IFrontendCallback is used by the client to receive events from the Frontend.
+     * Only one callback per IFrontend instance is supported. The callback
      * will be replaced if it's set again.
      *
      * @param callback Callback object to pass Frontend events to the system.
@@ -42,14 +43,14 @@
     setCallback(IFrontendCallback callback) generates (Result result);
 
     /**
-     * Tuning Frontend
+     * Tunes the frontend to using the settings given.
      *
-     * It is used by the client to lock a frequency by providing signal
-     * delivery information. If previous tuning isn't completed, this call must
-     * stop previous tuning, and start a new tuning. Tune is a async call.
-     * LOCKED or NO_SIGNAL eventi is sent back to caller through callback.
+     * This locks the frontend to a frequency by providing signal
+     * delivery information. If previous tuning isn't completed, this call MUST
+     * stop previous tuning, and start a new tuning.
+     * Tune is an async call, with LOCKED or NO_SIGNAL events sent via callback.
      *
-     * @param settings Signal delivery information which frontend can use to
+     * @param settings Signal delivery information the frontend uses to
      * search and lock the signal.
      *
      * @return result Result status of the operation.
@@ -60,9 +61,10 @@
     tune(FrontendSettings settings) generates (Result result);
 
     /**
-     * Stop the tuning
+     * Stops a previous tuning.
      *
-     * It is used by the client to stop a previous tuning.
+     * If the method completes successfully the frontend is no longer tuned and no data
+     * will be sent to attached demuxes.
      *
      * @return result Result status of the operation.
      *         SUCCESS if successfully stop tuning.
@@ -71,10 +73,10 @@
     stopTune() generates (Result result);
 
     /**
-     * Release the Frontend instance
+     * Releases the Frontend instance
      *
-     * It is used by the client to release the frontend instance. HAL clear
-     * underneath resource. client mustn't access the instance any more.
+     * Associated resources are released.  close may be called more than once.
+     * Calls to any other method after this will return an error
      *
      * @return result Result status of the operation.
      *         SUCCESS if successful,
@@ -148,7 +150,7 @@
     setLnb(LnbId lnbId) generates (Result result);
 
     /**
-     * Enble or Disable Low Noise Amplifier (LNA).
+     * Enable or Disable Low Noise Amplifier (LNA).
      *
      * @param bEnable true if activate LNA module; false if deactivate LNA
      *
diff --git a/tv/tuner/1.0/ITuner.hal b/tv/tuner/1.0/ITuner.hal
index 2712c13..ba183f1 100644
--- a/tv/tuner/1.0/ITuner.hal
+++ b/tv/tuner/1.0/ITuner.hal
@@ -123,4 +123,21 @@
      * @return lnb the newly created Lnb interface.
      */
     openLnbById(LnbId lnbId) generates (Result result, ILnb lnb);
+
+    /**
+     * Create a new instance of Lnb given a LNB name.
+     *
+     * It is used by the client to create a LNB instance for external device.
+     *
+     * @param lnbName the name for an external LNB to be opened. The app
+     *        provides the name. Frammework doesn't depend on the name, instead
+     *        use lnbId return from this call.
+     * @return result Result status of the operation.
+     *         SUCCESS if successful,
+     *         UNAVAILABLE if no resource.
+     *         UNKNOWN_ERROR if creation failed for other reasons.
+     * @return lnbId the id of the LNB to be opened.
+     * @return lnb the newly created Lnb interface.
+     */
+    openLnbByName(string lnbName) generates (Result result, LnbId lnbId, ILnb lnb);
 };
diff --git a/tv/tuner/1.0/TEST_MAPPING b/tv/tuner/1.0/TEST_MAPPING
new file mode 100644
index 0000000..1979887
--- /dev/null
+++ b/tv/tuner/1.0/TEST_MAPPING
@@ -0,0 +1,7 @@
+{
+  "presubmit": [
+    {
+      "name": "VtsHalTvTunerV1_0TargetTest"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/tv/tuner/1.0/default/Filter.cpp b/tv/tuner/1.0/default/Filter.cpp
index b3160fc..54d0952 100644
--- a/tv/tuner/1.0/default/Filter.cpp
+++ b/tv/tuner/1.0/default/Filter.cpp
@@ -120,7 +120,7 @@
     return Result::SUCCESS;
 }
 
-Return<Result> Filter::releaseAvHandle(const hidl_handle& /*avMemory*/) {
+Return<Result> Filter::releaseAvHandle(const hidl_handle& /*avMemory*/, uint64_t /*avDataId*/) {
     ALOGV("%s", __FUNCTION__);
 
     return Result::SUCCESS;
diff --git a/tv/tuner/1.0/default/Filter.h b/tv/tuner/1.0/default/Filter.h
index d397f73..0dc992a 100644
--- a/tv/tuner/1.0/default/Filter.h
+++ b/tv/tuner/1.0/default/Filter.h
@@ -70,7 +70,7 @@
 
     virtual Return<Result> flush() override;
 
-    virtual Return<Result> releaseAvHandle(const hidl_handle& avMemory) override;
+    virtual Return<Result> releaseAvHandle(const hidl_handle& avMemory, uint64_t avDataId) override;
 
     virtual Return<Result> close() override;
 
diff --git a/tv/tuner/1.0/default/Tuner.cpp b/tv/tuner/1.0/default/Tuner.cpp
index c143d61..c6017f0 100644
--- a/tv/tuner/1.0/default/Tuner.cpp
+++ b/tv/tuner/1.0/default/Tuner.cpp
@@ -139,6 +139,15 @@
     return mFrontends[frontendId];
 }
 
+Return<void> Tuner::openLnbByName(const hidl_string& /*lnbName*/, openLnbByName_cb _hidl_cb) {
+    ALOGV("%s", __FUNCTION__);
+
+    sp<ILnb> lnb = new Lnb();
+
+    _hidl_cb(Result::SUCCESS, 1234, lnb);
+    return Void();
+}
+
 void Tuner::setFrontendAsDemuxSource(uint32_t frontendId, uint32_t demuxId) {
     mFrontendToDemux[frontendId] = demuxId;
 }
diff --git a/tv/tuner/1.0/default/Tuner.h b/tv/tuner/1.0/default/Tuner.h
index 96da257..7a8a919 100644
--- a/tv/tuner/1.0/default/Tuner.h
+++ b/tv/tuner/1.0/default/Tuner.h
@@ -55,6 +55,9 @@
 
     virtual Return<void> openLnbById(LnbId lnbId, openLnbById_cb _hidl_cb) override;
 
+    virtual Return<void> openLnbByName(const hidl_string& lnbName,
+                                       openLnbByName_cb _hidl_cb) override;
+
     sp<Frontend> getFrontendById(uint32_t frontendId);
 
     void setFrontendAsDemuxSource(uint32_t frontendId, uint32_t demuxId);
diff --git a/tv/tuner/1.0/default/service.cpp b/tv/tuner/1.0/default/service.cpp
index 581d269..7bbc09e 100644
--- a/tv/tuner/1.0/default/service.cpp
+++ b/tv/tuner/1.0/default/service.cpp
@@ -21,7 +21,6 @@
 #define LOG_TAG "android.hardware.tv.tuner@1.0-service"
 #endif
 
-#include <binder/ProcessState.h>
 #include <hidl/HidlTransportSupport.h>
 #include <hidl/LegacySupport.h>
 
@@ -46,8 +45,8 @@
     android::sp<ITuner> service = new Tuner();
     android::status_t status;
     if (kLazyService) {
-        auto serviceRegistrar = std::make_shared<LazyServiceRegistrar>();
-        status = serviceRegistrar->registerService(service);
+        auto serviceRegistrar = LazyServiceRegistrar::getInstance();
+        status = serviceRegistrar.registerService(service);
     } else {
         status = service->registerAsService();
     }
diff --git a/tv/tuner/1.0/types.hal b/tv/tuner/1.0/types.hal
index 944da5a..2eaab36 100644
--- a/tv/tuner/1.0/types.hal
+++ b/tv/tuner/1.0/types.hal
@@ -63,7 +63,7 @@
     DVBS,
     /**
      * Digital Video Broadcasting - Terrestrial
-     * DVB Terresttrial Frontend Standard ETSI EN 300 468 V1.15.1 and
+     * DVB Terrestrial Frontend Standard ETSI EN 300 468 V1.15.1 and
      * ETSI EN 302 755 V1.4.1.
      */
     DVBT,
@@ -255,7 +255,7 @@
 };
 
 /**
- *  Signal Setting for ATSC Frontend.
+ *  Signal Settings for an ATSC Frontend.
  */
 struct FrontendAtscSettings {
     /**
@@ -537,6 +537,16 @@
 };
 
 /**
+ *   VCM mode in DVBS.
+ */
+@export
+enum FrontendDvbsVcmMode : uint32_t {
+    UNDEFINED,
+    AUTO,
+    MANUAL,
+};
+
+/**
  *  Signal Settings for an DVBS Frontend.
  */
 struct FrontendDvbsSettings {
@@ -561,6 +571,8 @@
     uint32_t inputStreamId;
 
     FrontendDvbsStandard standard;
+
+    FrontendDvbsVcmMode vcmMode;
 };
 
 /**
@@ -773,6 +785,7 @@
 /**
  *   Physical Layer Pipe (PLP) Mode for DVBT.
  */
+@export
 enum FrontendDvbtPlpMode : uint32_t {
     UNDEFINED,
     AUTO,
@@ -868,7 +881,7 @@
 };
 
 /**
- *  Modulaltion Type for ISDBS.
+ *  Modulation Type for ISDBS.
  */
 @export
 enum FrontendIsdbsModulation : uint32_t {
@@ -960,7 +973,7 @@
     /**
      * hardware is able to detect and set Modulation automatically
      */
-    AUTO = 1 << 5,
+    AUTO = 1 << 0,
     MOD_BPSK = 1 << 1,
     MOD_QPSK = 1 << 2,
     MOD_8PSK = 1 << 3,
@@ -1105,7 +1118,7 @@
 
     bitfield<FrontendIsdbtBandwidth> bandwidthCap;
 
-    bitfield<FrontendIsdbtModulation> constellationCap;
+    bitfield<FrontendIsdbtModulation> modulationCap;
 
     bitfield<FrontendIsdbtCoderate> coderateCap;
 
@@ -1118,9 +1131,14 @@
 @export
 enum FrontendAnalogType : uint32_t {
     UNDEFINED = 0,
-    PAL = 1 << 0,
-    SECAM = 1 << 1,
-    NTSC = 1 << 2,
+    AUTO = 1 << 0,
+    PAL = 1 << 1,
+    PAL_M = 1 << 2,
+    PAL_N = 1 << 3,
+    PAL_60 = 1 << 4,
+    NTSC = 1 << 5,
+    NTSC_443 = 1 << 6,
+    SECAM = 1 << 7,
 };
 
 /**
@@ -1129,23 +1147,24 @@
 @export
 enum FrontendAnalogSifStandard : uint32_t {
     UNDEFINED = 0,
-    BG = 1 << 0,
-    BG_A2 = 1 << 1,
-    BG_NICAM = 1 << 2,
-    I = 1 << 3,
-    DK = 1 << 4,
-    DK1 = 1 << 5,
-    DK2 = 1 << 6,
-    DK3 = 1 << 7,
-    DK_NICAM = 1 << 8,
-    L = 1 << 9,
-    M = 1 << 10,
-    M_BTSC = 1 << 11,
-    M_A2 = 1 << 12,
-    M_EIA_J = 1 << 13,
-    I_NICAM = 1 << 14,
-    L_NICAM = 1 << 15,
-    L_PRIME = 1 << 16,
+    AUTO = 1 << 0,
+    BG = 1 << 1,
+    BG_A2 = 1 << 2,
+    BG_NICAM = 1 << 3,
+    I = 1 << 4,
+    DK = 1 << 5,
+    DK1_A2 = 1 << 6,
+    DK2_A2 = 1 << 7,
+    DK3_A2 = 1 << 8,
+    DK_NICAM = 1 << 9,
+    L = 1 << 10,
+    M = 1 << 11,
+    M_BTSC = 1 << 12,
+    M_A2 = 1 << 13,
+    M_EIAJ = 1 << 14,
+    I_NICAM = 1 << 15,
+    L_NICAM = 1 << 16,
+    L_PRIME = 1 << 17,
 };
 
 /**
@@ -1197,6 +1216,7 @@
 /**
  *  Scan type for Frontend.
  */
+@export
 enum FrontendScanType : uint32_t {
     SCAN_UNDEFINED = 0,
     SCAN_AUTO = 1 << 0,
@@ -1206,6 +1226,7 @@
 /**
  *  Scan Message Type for Frontend.
  */
+@export
 enum FrontendScanMessageType : uint32_t {
     /**
      * Scan locked the signal.
@@ -1228,6 +1249,11 @@
      */
     SYMBOL_RATE,
     /**
+     * Locked HIERARCHY for DVBT2 frontend.
+     */
+    HIERARCHY,
+    ANALOG_TYPE,
+    /**
      * Locked Plp Ids for DVBT2 frontend.
      */
     PLP_IDS,
@@ -1272,14 +1298,18 @@
     uint8_t progressPercent;
 
     /**
-     * Signal frequency in Hertz
+     * Signal frequencies in Hertz
      */
-    uint32_t frequency;
+    vec<uint32_t> frequencies;
 
     /**
      * Symbols per second
      */
-    uint32_t symbolRate;
+    vec<uint32_t> symbolRates;
+
+    FrontendDvbtHierarchy hierarchy;
+
+    FrontendAnalogType analogType;
 
     vec<uint8_t> plpIds;
 
@@ -1287,10 +1317,12 @@
 
     vec<uint16_t> inputStreamIds;
 
-    safe_union standard {
+    safe_union Standard {
         FrontendDvbsStandard sStd;
 
         FrontendDvbtStandard tStd;
+
+        FrontendAnalogSifStandard sifStd;
     } std;
 
     /**
@@ -1305,18 +1337,15 @@
 @export
 enum FrontendEventType : uint32_t {
     /**
-     * If frontend locked the signal which is specified by tune method, HAL sends
-     * Locked event.
+     * The frontend has locked to the signal specified by the tune method.
      */
     LOCKED,
     /**
-     * If frontend can't locked the signal which is specified by tune method,
-     * HAL sends NO_SIGNAL event.
+     * The frontend is unable to lock to the signal specified by the tune method.
      */
     NO_SIGNAL,
     /**
-     * If frontend detect that the locked signal get lost, HAL sends LOST_LOCK
-     * event.
+     * The frontend has lost the lock to the signal specified by the tune method.
      */
     LOST_LOCK,
 };
@@ -2020,19 +2049,15 @@
 };
 
 /**
- * Index type to be used in the filter for record
+ * Start Code Index type to be used in the filter for record
  */
 @export
-enum DemuxRecordIndexType : uint32_t {
+enum DemuxRecordScIndexType : uint32_t {
     /**
-     * Don't use index
+     * Don't use SC index
      */
     NONE,
     /**
-     * Use TS index
-     */
-    TS,
-    /**
      * Use Start Code index
      */
     SC,
@@ -2046,15 +2071,16 @@
  *  Filter Settings for Record data.
  */
 struct DemuxFilterRecordSettings {
-    DemuxRecordIndexType indexType;
+    bitfield<DemuxTsIndex> tsIndexMask;
 
-    safe_union IndexMask {
-        bitfield<DemuxTsIndex> tsIndexMask;
+    DemuxRecordScIndexType scIndexType;
 
-        bitfield<DemuxScIndex> scIndexMask;
+    safe_union ScIndexMask {
 
-        bitfield<DemuxScHevcIndex> scHevcIndexMask;
-    } indexMask;
+        bitfield<DemuxScIndex> sc;
+
+        bitfield<DemuxScHevcIndex> scHevc;
+    } scIndexMask;
 };
 
 /**
@@ -2399,6 +2425,12 @@
     uint32_t dataLength;
 
     /**
+     *  The offset in the memory block which is shared among multiple
+     *  MediaEvents.
+     */
+    uint32_t offset;
+
+    /**
      * A handle associated to the memory where audio or video data stays.
      */
     handle avMemory;
@@ -2409,6 +2441,12 @@
     bool isSecureMemory;
 
     /**
+     * An Id is used by HAL to provide additional information for AV data.
+     * For secure audio, it's the audio handle used by Audio Track.
+     */
+    uint64_t avDataId;
+
+    /**
      * MPU sequence number of filtered data (only for MMTP)
      */
     uint32_t mpuSequenceNumber;
@@ -2448,16 +2486,17 @@
 struct DemuxFilterTsRecordEvent {
     DemuxPid pid;
 
+    bitfield<DemuxTsIndex> tsIndexMask;
+
     /**
      * Indexes of record output
      */
-    safe_union IndexMask {
-        bitfield<DemuxTsIndex> tsIndexMask;
+    safe_union ScIndexMask {
 
-        bitfield<DemuxScIndex> scIndexMask;
+        bitfield<DemuxScIndex> sc;
 
-        bitfield<DemuxScHevcIndex> scHevcIndexMask;
-    } indexMask;
+        bitfield<DemuxScHevcIndex> scHevc;
+    } scIndexMask;
 
     /**
      * Byte number from beginning of the filter's output
diff --git a/tv/tuner/README.md b/tv/tuner/README.md
new file mode 100644
index 0000000..aa1f62d
--- /dev/null
+++ b/tv/tuner/README.md
@@ -0,0 +1,12 @@
+# Tuner HALs
+
+## Overview
+
+TV specific tuners.
+
+See 1.0/ITuner.hal for an overview.
+
+*** note
+**Warning:** The HALs are not (yet) frozen, as the HAL definition is
+expected to evolve between Android releases.
+***
diff --git a/usb/gadget/1.1/Android.bp b/usb/gadget/1.1/Android.bp
new file mode 100644
index 0000000..b41eb9c
--- /dev/null
+++ b/usb/gadget/1.1/Android.bp
@@ -0,0 +1,17 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.usb.gadget@1.1",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "IUsbGadget.hal",
+    ],
+    interfaces: [
+        "android.hardware.usb.gadget@1.0",
+        "android.hidl.base@1.0",
+    ],
+    gen_java: true,
+}
diff --git a/usb/gadget/1.1/IUsbGadget.hal b/usb/gadget/1.1/IUsbGadget.hal
new file mode 100644
index 0000000..af88ef0
--- /dev/null
+++ b/usb/gadget/1.1/IUsbGadget.hal
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.usb.gadget@1.1;
+
+import @1.0::IUsbGadget;
+import @1.0::Status;
+
+interface IUsbGadget extends @1.0::IUsbGadget {
+    /**
+     * This function is used to reset USB gadget driver.
+     * Performs USB data connection reset. The connection will disconnect and
+     * reconnect.
+     *
+     * return status indicate success or not.
+     */
+    reset() generates(Status status);
+};
diff --git a/usb/gadget/1.1/default/Android.bp b/usb/gadget/1.1/default/Android.bp
new file mode 100644
index 0000000..68e2a29
--- /dev/null
+++ b/usb/gadget/1.1/default/Android.bp
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+cc_binary {
+    name: "android.hardware.usb.gadget@1.1-service",
+    defaults: ["hidl_defaults"],
+    relative_install_path: "hw",
+    init_rc: ["android.hardware.usb.gadget@1.1-service.rc"],
+    vintf_fragments: ["android.hardware.usb.gadget@1.1-service.xml"],
+    vendor: true,
+    srcs: [
+        "service.cpp",
+        "UsbGadget.cpp",
+    ],
+    shared_libs: [
+        "android.hardware.usb.gadget@1.0",
+        "android.hardware.usb.gadget@1.1",
+        "libbase",
+        "libcutils",
+        "libhardware",
+        "libhidlbase",
+        "liblog",
+        "libutils",
+    ],
+    static_libs: ["libusbconfigfs"],
+}
diff --git a/usb/gadget/1.1/default/UsbGadget.cpp b/usb/gadget/1.1/default/UsbGadget.cpp
new file mode 100644
index 0000000..36d865d
--- /dev/null
+++ b/usb/gadget/1.1/default/UsbGadget.cpp
@@ -0,0 +1,229 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "android.hardware.usb.gadget@1.1-service"
+
+#include "UsbGadget.h"
+#include <dirent.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <sys/inotify.h>
+#include <sys/mount.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+namespace android {
+namespace hardware {
+namespace usb {
+namespace gadget {
+namespace V1_1 {
+namespace implementation {
+
+UsbGadget::UsbGadget() {
+    if (access(OS_DESC_PATH, R_OK) != 0) {
+        ALOGE("configfs setup not done yet");
+        abort();
+    }
+}
+
+void currentFunctionsAppliedCallback(bool functionsApplied, void* payload) {
+    UsbGadget* gadget = (UsbGadget*)payload;
+    gadget->mCurrentUsbFunctionsApplied = functionsApplied;
+}
+
+Return<void> UsbGadget::getCurrentUsbFunctions(const sp<V1_0::IUsbGadgetCallback>& callback) {
+    Return<void> ret = callback->getCurrentUsbFunctionsCb(
+            mCurrentUsbFunctions, mCurrentUsbFunctionsApplied ? Status::FUNCTIONS_APPLIED
+                                                              : Status::FUNCTIONS_NOT_APPLIED);
+    if (!ret.isOk()) ALOGE("Call to getCurrentUsbFunctionsCb failed %s", ret.description().c_str());
+
+    return Void();
+}
+
+V1_0::Status UsbGadget::tearDownGadget() {
+    if (resetGadget() != V1_0::Status::SUCCESS) return V1_0::Status::ERROR;
+
+    if (monitorFfs.isMonitorRunning()) {
+        monitorFfs.reset();
+    } else {
+        ALOGI("mMonitor not running");
+    }
+    return V1_0::Status::SUCCESS;
+}
+
+Return<Status> UsbGadget::reset() {
+    if (!WriteStringToFile("none", PULLUP_PATH)) {
+        ALOGI("Gadget cannot be pulled down");
+        return Status::ERROR;
+    }
+
+    return Status::SUCCESS;
+}
+
+static V1_0::Status validateAndSetVidPid(uint64_t functions) {
+    V1_0::Status ret = V1_0::Status::SUCCESS;
+
+    switch (functions) {
+        case static_cast<uint64_t>(V1_0::GadgetFunction::MTP):
+            ret = setVidPid("0x18d1", "0x4ee1");
+            break;
+        case V1_0::GadgetFunction::ADB | V1_0::GadgetFunction::MTP:
+            ret = setVidPid("0x18d1", "0x4ee2");
+            break;
+        case static_cast<uint64_t>(V1_0::GadgetFunction::RNDIS):
+            ret = setVidPid("0x18d1", "0x4ee3");
+            break;
+        case V1_0::GadgetFunction::ADB | V1_0::GadgetFunction::RNDIS:
+            ret = setVidPid("0x18d1", "0x4ee4");
+            break;
+        case static_cast<uint64_t>(V1_0::GadgetFunction::PTP):
+            ret = setVidPid("0x18d1", "0x4ee5");
+            break;
+        case V1_0::GadgetFunction::ADB | V1_0::GadgetFunction::PTP:
+            ret = setVidPid("0x18d1", "0x4ee6");
+            break;
+        case static_cast<uint64_t>(V1_0::GadgetFunction::ADB):
+            ret = setVidPid("0x18d1", "0x4ee7");
+            break;
+        case static_cast<uint64_t>(V1_0::GadgetFunction::MIDI):
+            ret = setVidPid("0x18d1", "0x4ee8");
+            break;
+        case V1_0::GadgetFunction::ADB | V1_0::GadgetFunction::MIDI:
+            ret = setVidPid("0x18d1", "0x4ee9");
+            break;
+        case static_cast<uint64_t>(V1_0::GadgetFunction::ACCESSORY):
+            ret = setVidPid("0x18d1", "0x2d00");
+            break;
+        case V1_0::GadgetFunction::ADB | V1_0::GadgetFunction::ACCESSORY:
+            ret = setVidPid("0x18d1", "0x2d01");
+            break;
+        case static_cast<uint64_t>(V1_0::GadgetFunction::AUDIO_SOURCE):
+            ret = setVidPid("0x18d1", "0x2d02");
+            break;
+        case V1_0::GadgetFunction::ADB | V1_0::GadgetFunction::AUDIO_SOURCE:
+            ret = setVidPid("0x18d1", "0x2d03");
+            break;
+        case V1_0::GadgetFunction::ACCESSORY | V1_0::GadgetFunction::AUDIO_SOURCE:
+            ret = setVidPid("0x18d1", "0x2d04");
+            break;
+        case V1_0::GadgetFunction::ADB | V1_0::GadgetFunction::ACCESSORY |
+                V1_0::GadgetFunction::AUDIO_SOURCE:
+            ret = setVidPid("0x18d1", "0x2d05");
+            break;
+        default:
+            ALOGE("Combination not supported");
+            ret = V1_0::Status::CONFIGURATION_NOT_SUPPORTED;
+    }
+    return ret;
+}
+
+V1_0::Status UsbGadget::setupFunctions(uint64_t functions,
+                                       const sp<V1_0::IUsbGadgetCallback>& callback,
+                                       uint64_t timeout) {
+    bool ffsEnabled = false;
+    int i = 0;
+
+    if (addGenericAndroidFunctions(&monitorFfs, functions, &ffsEnabled, &i) !=
+        V1_0::Status::SUCCESS)
+        return V1_0::Status::ERROR;
+
+    if ((functions & V1_0::GadgetFunction::ADB) != 0) {
+        ffsEnabled = true;
+        if (addAdb(&monitorFfs, &i) != V1_0::Status::SUCCESS) return V1_0::Status::ERROR;
+    }
+
+    // Pull up the gadget right away when there are no ffs functions.
+    if (!ffsEnabled) {
+        if (!WriteStringToFile(kGadgetName, PULLUP_PATH)) return V1_0::Status::ERROR;
+        mCurrentUsbFunctionsApplied = true;
+        if (callback) callback->setCurrentUsbFunctionsCb(functions, V1_0::Status::SUCCESS);
+        return V1_0::Status::SUCCESS;
+    }
+
+    monitorFfs.registerFunctionsAppliedCallback(&currentFunctionsAppliedCallback, this);
+    // Monitors the ffs paths to pull up the gadget when descriptors are written.
+    // Also takes of the pulling up the gadget again if the userspace process
+    // dies and restarts.
+    monitorFfs.startMonitor();
+
+    if (kDebug) ALOGI("Mainthread in Cv");
+
+    if (callback) {
+        bool pullup = monitorFfs.waitForPullUp(timeout);
+        Return<void> ret = callback->setCurrentUsbFunctionsCb(
+                functions, pullup ? V1_0::Status::SUCCESS : V1_0::Status::ERROR);
+        if (!ret.isOk()) ALOGE("setCurrentUsbFunctionsCb error %s", ret.description().c_str());
+    }
+
+    return V1_0::Status::SUCCESS;
+}
+
+Return<void> UsbGadget::setCurrentUsbFunctions(uint64_t functions,
+                                               const sp<V1_0::IUsbGadgetCallback>& callback,
+                                               uint64_t timeout) {
+    std::unique_lock<std::mutex> lk(mLockSetCurrentFunction);
+
+    mCurrentUsbFunctions = functions;
+    mCurrentUsbFunctionsApplied = false;
+
+    // Unlink the gadget and stop the monitor if running.
+    V1_0::Status status = tearDownGadget();
+    if (status != V1_0::Status::SUCCESS) {
+        goto error;
+    }
+
+    ALOGI("Returned from tearDown gadget");
+
+    // Leave the gadget pulled down to give time for the host to sense disconnect.
+    usleep(kDisconnectWaitUs);
+
+    if (functions == static_cast<uint64_t>(V1_0::GadgetFunction::NONE)) {
+        if (callback == NULL) return Void();
+        Return<void> ret = callback->setCurrentUsbFunctionsCb(functions, V1_0::Status::SUCCESS);
+        if (!ret.isOk())
+            ALOGE("Error while calling setCurrentUsbFunctionsCb %s", ret.description().c_str());
+        return Void();
+    }
+
+    status = validateAndSetVidPid(functions);
+
+    if (status != V1_0::Status::SUCCESS) {
+        goto error;
+    }
+
+    status = setupFunctions(functions, callback, timeout);
+    if (status != V1_0::Status::SUCCESS) {
+        goto error;
+    }
+
+    ALOGI("Usb Gadget setcurrent functions called successfully");
+    return Void();
+
+error:
+    ALOGI("Usb Gadget setcurrent functions failed");
+    if (callback == NULL) return Void();
+    Return<void> ret = callback->setCurrentUsbFunctionsCb(functions, status);
+    if (!ret.isOk())
+        ALOGE("Error while calling setCurrentUsbFunctionsCb %s", ret.description().c_str());
+    return Void();
+}
+}  // namespace implementation
+}  // namespace V1_1
+}  // namespace gadget
+}  // namespace usb
+}  // namespace hardware
+}  // namespace android
diff --git a/usb/gadget/1.1/default/UsbGadget.h b/usb/gadget/1.1/default/UsbGadget.h
new file mode 100644
index 0000000..b278071
--- /dev/null
+++ b/usb/gadget/1.1/default/UsbGadget.h
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_HARDWARE_USB_GADGET_V1_1_USBGADGET_H
+#define ANDROID_HARDWARE_USB_GADGET_V1_1_USBGADGET_H
+
+#include <UsbGadgetCommon.h>
+#include <android-base/file.h>
+#include <android-base/properties.h>
+#include <android-base/unique_fd.h>
+#include <android/hardware/usb/gadget/1.1/IUsbGadget.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+#include <sys/epoll.h>
+#include <sys/eventfd.h>
+#include <utils/Log.h>
+#include <chrono>
+#include <condition_variable>
+#include <mutex>
+#include <string>
+#include <thread>
+
+namespace android {
+namespace hardware {
+namespace usb {
+namespace gadget {
+namespace V1_1 {
+namespace implementation {
+
+using ::android::sp;
+using ::android::base::GetProperty;
+using ::android::base::SetProperty;
+using ::android::base::unique_fd;
+using ::android::base::WriteStringToFile;
+using ::android::hardware::hidl_array;
+using ::android::hardware::hidl_memory;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::usb::gadget::addAdb;
+using ::android::hardware::usb::gadget::addEpollFd;
+using ::android::hardware::usb::gadget::getVendorFunctions;
+using ::android::hardware::usb::gadget::kDebug;
+using ::android::hardware::usb::gadget::kDisconnectWaitUs;
+using ::android::hardware::usb::gadget::linkFunction;
+using ::android::hardware::usb::gadget::MonitorFfs;
+using ::android::hardware::usb::gadget::resetGadget;
+using ::android::hardware::usb::gadget::setVidPid;
+using ::android::hardware::usb::gadget::unlinkFunctions;
+using ::std::string;
+
+constexpr char kGadgetName[] = "a600000.dwc3";
+static MonitorFfs monitorFfs(kGadgetName);
+
+struct UsbGadget : public IUsbGadget {
+    UsbGadget();
+
+    // Makes sure that only one request is processed at a time.
+    std::mutex mLockSetCurrentFunction;
+    uint64_t mCurrentUsbFunctions;
+    bool mCurrentUsbFunctionsApplied;
+
+    Return<void> setCurrentUsbFunctions(uint64_t functions,
+                                        const sp<V1_0::IUsbGadgetCallback>& callback,
+                                        uint64_t timeout) override;
+
+    Return<void> getCurrentUsbFunctions(const sp<V1_0::IUsbGadgetCallback>& callback) override;
+
+    Return<Status> reset() override;
+
+  private:
+    V1_0::Status tearDownGadget();
+    V1_0::Status setupFunctions(uint64_t functions, const sp<V1_0::IUsbGadgetCallback>& callback,
+                                uint64_t timeout);
+};
+
+}  // namespace implementation
+}  // namespace V1_1
+}  // namespace gadget
+}  // namespace usb
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_USB_V1_1_USBGADGET_H
diff --git a/usb/gadget/1.1/default/android.hardware.usb.gadget@1.1-service.rc b/usb/gadget/1.1/default/android.hardware.usb.gadget@1.1-service.rc
new file mode 100644
index 0000000..34ea7da
--- /dev/null
+++ b/usb/gadget/1.1/default/android.hardware.usb.gadget@1.1-service.rc
@@ -0,0 +1,6 @@
+service vendor.usb-gadget-hal-1-1 /vendor/bin/hw/android.hardware.usb.gadget@1.1-service
+    interface android.hardware.usb.gadget@1.0::IUsbGadget default
+    interface android.hardware.usb.gadget@1.1::IUsbGadget default
+    class hal
+    user root
+    group root shell mtp
diff --git a/usb/gadget/1.1/default/android.hardware.usb.gadget@1.1-service.xml b/usb/gadget/1.1/default/android.hardware.usb.gadget@1.1-service.xml
new file mode 100644
index 0000000..b40fa77
--- /dev/null
+++ b/usb/gadget/1.1/default/android.hardware.usb.gadget@1.1-service.xml
@@ -0,0 +1,12 @@
+<manifest version="1.0" type="device">
+    <hal format="hidl">
+        <name>android.hardware.usb.gadget</name>
+        <transport>hwbinder</transport>
+        <version>1.1</version>
+        <interface>
+            <name>IUsbGadget</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+</manifest>
+
diff --git a/usb/gadget/1.1/default/lib/Android.bp b/usb/gadget/1.1/default/lib/Android.bp
new file mode 100644
index 0000000..bba8340
--- /dev/null
+++ b/usb/gadget/1.1/default/lib/Android.bp
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+cc_library_static {
+    name: "libusbconfigfs",
+    vendor_available: true,
+    export_include_dirs: ["include"],
+
+    srcs: [
+        "UsbGadgetUtils.cpp",
+        "MonitorFfs.cpp",
+    ],
+
+    cflags: [
+        "-Wall",
+        "-Werror",
+    ],
+
+    shared_libs: [
+        "android.hardware.usb.gadget@1.0",
+        "android.hardware.usb.gadget@1.1",
+        "libbase",
+        "libcutils",
+        "libhidlbase",
+        "libutils",
+    ],
+}
diff --git a/usb/gadget/1.1/default/lib/MonitorFfs.cpp b/usb/gadget/1.1/default/lib/MonitorFfs.cpp
new file mode 100644
index 0000000..0cdf038
--- /dev/null
+++ b/usb/gadget/1.1/default/lib/MonitorFfs.cpp
@@ -0,0 +1,269 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "libusbconfigfs"
+
+#include "include/UsbGadgetCommon.h"
+
+namespace android {
+namespace hardware {
+namespace usb {
+namespace gadget {
+
+static volatile bool gadgetPullup;
+
+MonitorFfs::MonitorFfs(const char* const gadget)
+    : mWatchFd(),
+      mEndpointList(),
+      mLock(),
+      mCv(),
+      mLockFd(),
+      mCurrentUsbFunctionsApplied(false),
+      mMonitor(),
+      mCallback(NULL),
+      mPayload(NULL),
+      mGadgetName(gadget),
+      mMonitorRunning(false) {
+    unique_fd eventFd(eventfd(0, 0));
+    if (eventFd == -1) {
+        ALOGE("mEventFd failed to create %d", errno);
+        abort();
+    }
+
+    unique_fd epollFd(epoll_create(2));
+    if (epollFd == -1) {
+        ALOGE("mEpollFd failed to create %d", errno);
+        abort();
+    }
+
+    unique_fd inotifyFd(inotify_init());
+    if (inotifyFd < 0) {
+        ALOGE("inotify init failed");
+        abort();
+    }
+
+    if (addEpollFd(epollFd, inotifyFd) == -1) abort();
+
+    if (addEpollFd(epollFd, eventFd) == -1) abort();
+
+    mEpollFd = move(epollFd);
+    mInotifyFd = move(inotifyFd);
+    mEventFd = move(eventFd);
+    gadgetPullup = false;
+}
+
+static void displayInotifyEvent(struct inotify_event* i) {
+    ALOGE("    wd =%2d; ", i->wd);
+    if (i->cookie > 0) ALOGE("cookie =%4d; ", i->cookie);
+
+    ALOGE("mask = ");
+    if (i->mask & IN_ACCESS) ALOGE("IN_ACCESS ");
+    if (i->mask & IN_ATTRIB) ALOGE("IN_ATTRIB ");
+    if (i->mask & IN_CLOSE_NOWRITE) ALOGE("IN_CLOSE_NOWRITE ");
+    if (i->mask & IN_CLOSE_WRITE) ALOGE("IN_CLOSE_WRITE ");
+    if (i->mask & IN_CREATE) ALOGE("IN_CREATE ");
+    if (i->mask & IN_DELETE) ALOGE("IN_DELETE ");
+    if (i->mask & IN_DELETE_SELF) ALOGE("IN_DELETE_SELF ");
+    if (i->mask & IN_IGNORED) ALOGE("IN_IGNORED ");
+    if (i->mask & IN_ISDIR) ALOGE("IN_ISDIR ");
+    if (i->mask & IN_MODIFY) ALOGE("IN_MODIFY ");
+    if (i->mask & IN_MOVE_SELF) ALOGE("IN_MOVE_SELF ");
+    if (i->mask & IN_MOVED_FROM) ALOGE("IN_MOVED_FROM ");
+    if (i->mask & IN_MOVED_TO) ALOGE("IN_MOVED_TO ");
+    if (i->mask & IN_OPEN) ALOGE("IN_OPEN ");
+    if (i->mask & IN_Q_OVERFLOW) ALOGE("IN_Q_OVERFLOW ");
+    if (i->mask & IN_UNMOUNT) ALOGE("IN_UNMOUNT ");
+    ALOGE("\n");
+
+    if (i->len > 0) ALOGE("        name = %s\n", i->name);
+}
+
+void* MonitorFfs::startMonitorFd(void* param) {
+    MonitorFfs* monitorFfs = (MonitorFfs*)param;
+    char buf[kBufferSize];
+    bool writeUdc = true, stopMonitor = false;
+    struct epoll_event events[kEpollEvents];
+    steady_clock::time_point disconnect;
+
+    bool descriptorWritten = true;
+    for (int i = 0; i < static_cast<int>(monitorFfs->mEndpointList.size()); i++) {
+        if (access(monitorFfs->mEndpointList.at(i).c_str(), R_OK)) {
+            descriptorWritten = false;
+            break;
+        }
+    }
+
+    // notify here if the endpoints are already present.
+    if (descriptorWritten) {
+        usleep(kPullUpDelay);
+        if (!!WriteStringToFile(monitorFfs->mGadgetName, PULLUP_PATH)) {
+            lock_guard<mutex> lock(monitorFfs->mLock);
+            monitorFfs->mCurrentUsbFunctionsApplied = true;
+            monitorFfs->mCallback(monitorFfs->mCurrentUsbFunctionsApplied, monitorFfs->mPayload);
+            gadgetPullup = true;
+            writeUdc = false;
+            ALOGI("GADGET pulled up");
+            monitorFfs->mCv.notify_all();
+        }
+    }
+
+    while (!stopMonitor) {
+        int nrEvents = epoll_wait(monitorFfs->mEpollFd, events, kEpollEvents, -1);
+
+        if (nrEvents <= 0) {
+            ALOGE("epoll wait did not return descriptor number");
+            continue;
+        }
+
+        for (int i = 0; i < nrEvents; i++) {
+            ALOGI("event=%u on fd=%d\n", events[i].events, events[i].data.fd);
+
+            if (events[i].data.fd == monitorFfs->mInotifyFd) {
+                // Process all of the events in buffer returned by read().
+                int numRead = read(monitorFfs->mInotifyFd, buf, kBufferSize);
+                for (char* p = buf; p < buf + numRead;) {
+                    struct inotify_event* event = (struct inotify_event*)p;
+                    if (kDebug) displayInotifyEvent(event);
+
+                    p += sizeof(struct inotify_event) + event->len;
+
+                    bool descriptorPresent = true;
+                    for (int j = 0; j < static_cast<int>(monitorFfs->mEndpointList.size()); j++) {
+                        if (access(monitorFfs->mEndpointList.at(j).c_str(), R_OK)) {
+                            if (kDebug) ALOGI("%s absent", monitorFfs->mEndpointList.at(j).c_str());
+                            descriptorPresent = false;
+                            break;
+                        }
+                    }
+
+                    if (!descriptorPresent && !writeUdc) {
+                        if (kDebug) ALOGI("endpoints not up");
+                        writeUdc = true;
+                        disconnect = std::chrono::steady_clock::now();
+                    } else if (descriptorPresent && writeUdc) {
+                        steady_clock::time_point temp = steady_clock::now();
+
+                        if (std::chrono::duration_cast<microseconds>(temp - disconnect).count() <
+                            kPullUpDelay)
+                            usleep(kPullUpDelay);
+
+                        if (!!WriteStringToFile(monitorFfs->mGadgetName, PULLUP_PATH)) {
+                            lock_guard<mutex> lock(monitorFfs->mLock);
+                            monitorFfs->mCurrentUsbFunctionsApplied = true;
+                            monitorFfs->mCallback(monitorFfs->mCurrentUsbFunctionsApplied,
+                                                  monitorFfs->mPayload);
+                            ALOGI("GADGET pulled up");
+                            writeUdc = false;
+                            gadgetPullup = true;
+                            // notify the main thread to signal userspace.
+                            monitorFfs->mCv.notify_all();
+                        }
+                    }
+                }
+            } else {
+                uint64_t flag;
+                read(monitorFfs->mEventFd, &flag, sizeof(flag));
+                if (flag == 100) {
+                    stopMonitor = true;
+                    break;
+                }
+            }
+        }
+    }
+    return NULL;
+}
+
+void MonitorFfs::reset() {
+    lock_guard<mutex> lock(mLockFd);
+    uint64_t flag = 100;
+    unsigned long ret;
+
+    if (mMonitorRunning) {
+        // Stop the monitor thread by writing into signal fd.
+        ret = TEMP_FAILURE_RETRY(write(mEventFd, &flag, sizeof(flag)));
+        if (ret < 0) ALOGE("Error writing eventfd errno=%d", errno);
+
+        ALOGI("mMonitor signalled to exit");
+        mMonitor->join();
+        ALOGI("mMonitor destroyed");
+        mMonitorRunning = false;
+    }
+
+    for (std::vector<int>::size_type i = 0; i != mWatchFd.size(); i++)
+        inotify_rm_watch(mInotifyFd, mWatchFd[i]);
+
+    mEndpointList.clear();
+    gadgetPullup = false;
+    mCallback = NULL;
+    mPayload = NULL;
+}
+
+bool MonitorFfs::startMonitor() {
+    mMonitor = unique_ptr<thread>(new thread(this->startMonitorFd, this));
+    mMonitorRunning = true;
+    return true;
+}
+
+bool MonitorFfs::isMonitorRunning() {
+    return mMonitorRunning;
+}
+
+bool MonitorFfs::waitForPullUp(int timeout_ms) {
+    std::unique_lock<std::mutex> lk(mLock);
+
+    if (gadgetPullup) return true;
+
+    if (mCv.wait_for(lk, timeout_ms * 1ms, [] { return gadgetPullup; })) {
+        ALOGI("monitorFfs signalled true");
+        return true;
+    } else {
+        ALOGI("monitorFfs signalled error");
+        // continue monitoring as the descriptors might be written at a later
+        // point.
+        return false;
+    }
+}
+
+bool MonitorFfs::addInotifyFd(string fd) {
+    lock_guard<mutex> lock(mLockFd);
+    int wfd;
+
+    wfd = inotify_add_watch(mInotifyFd, fd.c_str(), IN_ALL_EVENTS);
+    if (wfd == -1)
+        return false;
+    else
+        mWatchFd.push_back(wfd);
+
+    return true;
+}
+
+void MonitorFfs::addEndPoint(string ep) {
+    lock_guard<mutex> lock(mLockFd);
+
+    mEndpointList.push_back(ep);
+}
+
+void MonitorFfs::registerFunctionsAppliedCallback(void (*callback)(bool functionsApplied,
+                                                                   void* payload),
+                                                  void* payload) {
+    mCallback = callback;
+    mPayload = payload;
+}
+
+}  // namespace gadget
+}  // namespace usb
+}  // namespace hardware
+}  // namespace android
diff --git a/usb/gadget/1.1/default/lib/UsbGadgetUtils.cpp b/usb/gadget/1.1/default/lib/UsbGadgetUtils.cpp
new file mode 100644
index 0000000..8402853
--- /dev/null
+++ b/usb/gadget/1.1/default/lib/UsbGadgetUtils.cpp
@@ -0,0 +1,193 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "libusbconfigfs"
+
+#include "include/UsbGadgetCommon.h"
+
+namespace android {
+namespace hardware {
+namespace usb {
+namespace gadget {
+
+int unlinkFunctions(const char* path) {
+    DIR* config = opendir(path);
+    struct dirent* function;
+    char filepath[kMaxFilePathLength];
+    int ret = 0;
+
+    if (config == NULL) return -1;
+
+    // d_type does not seems to be supported in /config
+    // so filtering by name.
+    while (((function = readdir(config)) != NULL)) {
+        if ((strstr(function->d_name, FUNCTION_NAME) == NULL)) continue;
+        // build the path for each file in the folder.
+        sprintf(filepath, "%s/%s", path, function->d_name);
+        ret = remove(filepath);
+        if (ret) {
+            ALOGE("Unable  remove file %s errno:%d", filepath, errno);
+            break;
+        }
+    }
+
+    closedir(config);
+    return ret;
+}
+
+int addEpollFd(const unique_fd& epfd, const unique_fd& fd) {
+    struct epoll_event event;
+    int ret;
+
+    event.data.fd = fd;
+    event.events = EPOLLIN;
+
+    ret = epoll_ctl(epfd, EPOLL_CTL_ADD, fd, &event);
+    if (ret) ALOGE("epoll_ctl error %d", errno);
+
+    return ret;
+}
+
+int linkFunction(const char* function, int index) {
+    char functionPath[kMaxFilePathLength];
+    char link[kMaxFilePathLength];
+
+    sprintf(functionPath, "%s%s", FUNCTIONS_PATH, function);
+    sprintf(link, "%s%d", FUNCTION_PATH, index);
+    if (symlink(functionPath, link)) {
+        ALOGE("Cannot create symlink %s -> %s errno:%d", link, functionPath, errno);
+        return -1;
+    }
+    return 0;
+}
+
+Status setVidPid(const char* vid, const char* pid) {
+    if (!WriteStringToFile(vid, VENDOR_ID_PATH)) return Status::ERROR;
+
+    if (!WriteStringToFile(pid, PRODUCT_ID_PATH)) return Status::ERROR;
+
+    return Status::SUCCESS;
+}
+
+std::string getVendorFunctions() {
+    if (GetProperty(kBuildType, "") == "user") return "user";
+
+    std::string bootMode = GetProperty(PERSISTENT_BOOT_MODE, "");
+    std::string persistVendorFunctions = GetProperty(kPersistentVendorConfig, "");
+    std::string vendorFunctions = GetProperty(kVendorConfig, "");
+    std::string ret = "";
+
+    if (vendorFunctions != "") {
+        ret = vendorFunctions;
+    } else if (bootMode == "usbradio" || bootMode == "factory" || bootMode == "ffbm-00" ||
+               bootMode == "ffbm-01") {
+        if (persistVendorFunctions != "")
+            ret = persistVendorFunctions;
+        else
+            ret = "diag";
+        // vendor.usb.config will reflect the current configured functions
+        SetProperty(kVendorConfig, ret);
+    }
+
+    return ret;
+}
+
+Status resetGadget() {
+    ALOGI("setCurrentUsbFunctions None");
+
+    if (!WriteStringToFile("none", PULLUP_PATH)) ALOGI("Gadget cannot be pulled down");
+
+    if (!WriteStringToFile("0", DEVICE_CLASS_PATH)) return Status::ERROR;
+
+    if (!WriteStringToFile("0", DEVICE_SUB_CLASS_PATH)) return Status::ERROR;
+
+    if (!WriteStringToFile("0", DEVICE_PROTOCOL_PATH)) return Status::ERROR;
+
+    if (!WriteStringToFile("0", DESC_USE_PATH)) return Status::ERROR;
+
+    if (unlinkFunctions(CONFIG_PATH)) return Status::ERROR;
+
+    return Status::SUCCESS;
+}
+
+Status addGenericAndroidFunctions(MonitorFfs* monitorFfs, uint64_t functions, bool* ffsEnabled,
+                                  int* functionCount) {
+    if (((functions & GadgetFunction::MTP) != 0)) {
+        *ffsEnabled = true;
+        ALOGI("setCurrentUsbFunctions mtp");
+        if (!WriteStringToFile("1", DESC_USE_PATH)) return Status::ERROR;
+
+        if (!monitorFfs->addInotifyFd("/dev/usb-ffs/mtp/")) return Status::ERROR;
+
+        if (linkFunction("ffs.mtp", (*functionCount)++)) return Status::ERROR;
+
+        // Add endpoints to be monitored.
+        monitorFfs->addEndPoint("/dev/usb-ffs/mtp/ep1");
+        monitorFfs->addEndPoint("/dev/usb-ffs/mtp/ep2");
+        monitorFfs->addEndPoint("/dev/usb-ffs/mtp/ep3");
+    } else if (((functions & GadgetFunction::PTP) != 0)) {
+        *ffsEnabled = true;
+        ALOGI("setCurrentUsbFunctions ptp");
+        if (!WriteStringToFile("1", DESC_USE_PATH)) return Status::ERROR;
+
+        if (!monitorFfs->addInotifyFd("/dev/usb-ffs/ptp/")) return Status::ERROR;
+
+        if (linkFunction("ffs.ptp", (*functionCount)++)) return Status::ERROR;
+
+        // Add endpoints to be monitored.
+        monitorFfs->addEndPoint("/dev/usb-ffs/ptp/ep1");
+        monitorFfs->addEndPoint("/dev/usb-ffs/ptp/ep2");
+        monitorFfs->addEndPoint("/dev/usb-ffs/ptp/ep3");
+    }
+
+    if ((functions & GadgetFunction::MIDI) != 0) {
+        ALOGI("setCurrentUsbFunctions MIDI");
+        if (linkFunction("midi.gs5", (*functionCount)++)) return Status::ERROR;
+    }
+
+    if ((functions & GadgetFunction::ACCESSORY) != 0) {
+        ALOGI("setCurrentUsbFunctions Accessory");
+        if (linkFunction("accessory.gs2", (*functionCount)++)) return Status::ERROR;
+    }
+
+    if ((functions & GadgetFunction::AUDIO_SOURCE) != 0) {
+        ALOGI("setCurrentUsbFunctions Audio Source");
+        if (linkFunction("audio_source.gs3", (*functionCount)++)) return Status::ERROR;
+    }
+
+    if ((functions & GadgetFunction::RNDIS) != 0) {
+        ALOGI("setCurrentUsbFunctions rndis");
+        if (linkFunction("gsi.rndis", (*functionCount)++)) return Status::ERROR;
+    }
+
+    return Status::SUCCESS;
+}
+
+Status addAdb(MonitorFfs* monitorFfs, int* functionCount) {
+    ALOGI("setCurrentUsbFunctions Adb");
+    if (!monitorFfs->addInotifyFd("/dev/usb-ffs/adb/")) return Status::ERROR;
+
+    if (linkFunction("ffs.adb", (*functionCount)++)) return Status::ERROR;
+    monitorFfs->addEndPoint("/dev/usb-ffs/adb/ep1");
+    monitorFfs->addEndPoint("/dev/usb-ffs/adb/ep2");
+    ALOGI("Service started");
+    return Status::SUCCESS;
+}
+
+}  // namespace gadget
+}  // namespace usb
+}  // namespace hardware
+}  // namespace android
diff --git a/usb/gadget/1.1/default/lib/include/UsbGadgetCommon.h b/usb/gadget/1.1/default/lib/include/UsbGadgetCommon.h
new file mode 100644
index 0000000..b30f18e
--- /dev/null
+++ b/usb/gadget/1.1/default/lib/include/UsbGadgetCommon.h
@@ -0,0 +1,177 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef HARDWARE_USB_USBGADGETCOMMON_H
+#define HARDWARE_USB_USBGADGETCOMMON_H
+
+#include <android-base/file.h>
+#include <android-base/properties.h>
+#include <android-base/unique_fd.h>
+
+#include <android/hardware/usb/gadget/1.1/IUsbGadget.h>
+
+#include <dirent.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <sys/epoll.h>
+#include <sys/eventfd.h>
+#include <sys/inotify.h>
+#include <sys/mount.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <utils/Log.h>
+#include <chrono>
+#include <condition_variable>
+#include <mutex>
+#include <string>
+#include <thread>
+
+namespace android {
+namespace hardware {
+namespace usb {
+namespace gadget {
+
+constexpr int kBufferSize = 512;
+constexpr int kMaxFilePathLength = 256;
+constexpr int kEpollEvents = 10;
+constexpr bool kDebug = false;
+constexpr int kDisconnectWaitUs = 100000;
+constexpr int kPullUpDelay = 500000;
+constexpr int kShutdownMonitor = 100;
+
+constexpr char kBuildType[] = "ro.build.type";
+constexpr char kPersistentVendorConfig[] = "persist.vendor.usb.usbradio.config";
+constexpr char kVendorConfig[] = "vendor.usb.config";
+
+#define GADGET_PATH "/config/usb_gadget/g1/"
+#define PULLUP_PATH GADGET_PATH "UDC"
+#define PERSISTENT_BOOT_MODE "ro.bootmode"
+#define VENDOR_ID_PATH GADGET_PATH "idVendor"
+#define PRODUCT_ID_PATH GADGET_PATH "idProduct"
+#define DEVICE_CLASS_PATH GADGET_PATH "bDeviceClass"
+#define DEVICE_SUB_CLASS_PATH GADGET_PATH "bDeviceSubClass"
+#define DEVICE_PROTOCOL_PATH GADGET_PATH "bDeviceProtocol"
+#define DESC_USE_PATH GADGET_PATH "os_desc/use"
+#define OS_DESC_PATH GADGET_PATH "os_desc/b.1"
+#define CONFIG_PATH GADGET_PATH "configs/b.1/"
+#define FUNCTIONS_PATH GADGET_PATH "functions/"
+#define FUNCTION_NAME "function"
+#define FUNCTION_PATH CONFIG_PATH FUNCTION_NAME
+#define RNDIS_PATH FUNCTIONS_PATH "gsi.rndis"
+
+using ::android::base::GetProperty;
+using ::android::base::SetProperty;
+using ::android::base::unique_fd;
+using ::android::base::WriteStringToFile;
+using ::android::hardware::usb::gadget::V1_0::GadgetFunction;
+using ::android::hardware::usb::gadget::V1_0::Status;
+
+using ::std::lock_guard;
+using ::std::move;
+using ::std::mutex;
+using ::std::string;
+using ::std::thread;
+using ::std::unique_ptr;
+using ::std::vector;
+using ::std::chrono::microseconds;
+using ::std::chrono::steady_clock;
+using ::std::literals::chrono_literals::operator""ms;
+
+// MonitorFfs automously manages gadget pullup by monitoring
+// the ep file status. Restarts the usb gadget when the ep
+// owner restarts.
+class MonitorFfs {
+  private:
+    // Monitors the endpoints Inotify events.
+    unique_fd mInotifyFd;
+    // Control pipe for shutting down the mMonitor thread.
+    // mMonitor exits when SHUTDOWN_MONITOR is written into
+    // mEventFd/
+    unique_fd mEventFd;
+    // Pools on mInotifyFd and mEventFd.
+    unique_fd mEpollFd;
+    vector<int> mWatchFd;
+
+    // Maintains the list of Endpoints.
+    vector<string> mEndpointList;
+    // protects the CV.
+    std::mutex mLock;
+    std::condition_variable mCv;
+    // protects mInotifyFd, mEpollFd.
+    std::mutex mLockFd;
+
+    // Flag to maintain the current status of gadget pullup.
+    bool mCurrentUsbFunctionsApplied;
+
+    // Thread object that executes the ep monitoring logic.
+    unique_ptr<thread> mMonitor;
+    // Callback to be invoked when gadget is pulled up.
+    void (*mCallback)(bool functionsApplied, void* payload);
+    void* mPayload;
+    // Name of the USB gadget. Used for pullup.
+    const char* const mGadgetName;
+    // Monitor State
+    bool mMonitorRunning;
+
+  public:
+    MonitorFfs(const char* const gadget);
+    // Inits all the UniqueFds.
+    void reset();
+    // Starts monitoring endpoints and pullup the gadget when
+    // the descriptors are written.
+    bool startMonitor();
+    // Waits for timeout_ms for gadget pull up to happen.
+    // Returns immediately if the gadget is already pulled up.
+    bool waitForPullUp(int timeout_ms);
+    // Adds the given fd to the watch list.
+    bool addInotifyFd(string fd);
+    // Adds the given endpoint to the watch list.
+    void addEndPoint(string ep);
+    // Registers the async callback from the caller to notify the caller
+    // when the gadget pull up happens.
+    void registerFunctionsAppliedCallback(void (*callback)(bool functionsApplied, void*(payload)),
+                                          void* payload);
+    bool isMonitorRunning();
+    // Ep monitoring and the gadget pull up logic.
+    static void* startMonitorFd(void* param);
+};
+
+//**************** Helper functions ************************//
+
+// Adds the given fd to the epollfd(epfd).
+int addEpollFd(const unique_fd& epfd, const unique_fd& fd);
+// Removes all the usb functions link in the specified path.
+int unlinkFunctions(const char* path);
+// Craetes a configfs link for the function.
+int linkFunction(const char* function, int index);
+// Sets the USB VID and PID.
+Status setVidPid(const char* vid, const char* pid);
+// Extracts vendor functions from the vendor init properties.
+std::string getVendorFunctions();
+// Adds Adb to the usb configuration.
+Status addAdb(MonitorFfs* monitorFfs, int* functionCount);
+// Adds all applicable generic android usb functions other than ADB.
+Status addGenericAndroidFunctions(MonitorFfs* monitorFfs, uint64_t functions, bool* ffsEnabled,
+                                  int* functionCount);
+// Pulls down USB gadget.
+Status resetGadget();
+
+}  // namespace gadget
+}  // namespace usb
+}  // namespace hardware
+}  // namespace android
+#endif
diff --git a/usb/gadget/1.1/default/service.cpp b/usb/gadget/1.1/default/service.cpp
new file mode 100644
index 0000000..7414e89
--- /dev/null
+++ b/usb/gadget/1.1/default/service.cpp
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define LOG_TAG "android.hardware.usb.gadget@1.1-service"
+
+#include <hidl/HidlTransportSupport.h>
+#include "UsbGadget.h"
+
+using android::sp;
+
+// libhwbinder:
+using android::hardware::configureRpcThreadpool;
+using android::hardware::joinRpcThreadpool;
+
+// Generated HIDL files
+using android::hardware::usb::gadget::V1_1::IUsbGadget;
+using android::hardware::usb::gadget::V1_1::implementation::UsbGadget;
+
+using android::OK;
+using android::status_t;
+
+int main() {
+    configureRpcThreadpool(1, true /*callerWillJoin*/);
+
+    android::sp<IUsbGadget> service2 = new UsbGadget();
+
+    status_t status = service2->registerAsService();
+
+    if (status != OK) {
+        ALOGE("Cannot register USB Gadget HAL service");
+        return 1;
+    }
+
+    ALOGI("USB Gadget HAL Ready.");
+    joinRpcThreadpool();
+    // Under noraml cases, execution will not reach this line.
+    ALOGI("USB Gadget HAL failed to join thread pool.");
+    return 1;
+}
diff --git a/wifi/1.0/vts/functional/Android.bp b/wifi/1.0/vts/functional/Android.bp
index 95bb59c..bf77503 100644
--- a/wifi/1.0/vts/functional/Android.bp
+++ b/wifi/1.0/vts/functional/Android.bp
@@ -39,7 +39,6 @@
     defaults: ["VtsHalTargetTestDefaults"],
     srcs: [
         "VtsHalWifiV1_0TargetTest.cpp",
-        "wifi_ap_iface_hidl_test.cpp",
         "wifi_chip_hidl_test.cpp",
         "wifi_p2p_iface_hidl_test.cpp",
         "wifi_rtt_controller_hidl_test.cpp",
@@ -53,14 +52,17 @@
         "android.hardware.wifi@1.3",
         "libwifi-system-iface"
     ],
-    test_suites: ["general-tests"],
+    test_suites: ["general-tests", "vts-core"],
 }
 
+// These tests are split out so that they can be conditioned on presence of the
+// "android.hardware.wifi.aware" feature.
 cc_test {
     name: "VtsHalWifiNanV1_0TargetTest",
     defaults: ["VtsHalTargetTestDefaults"],
     srcs: [
         "VtsHalWifiV1_0TargetTest.cpp",
+        "wifi_chip_hidl_nan_test.cpp",
         "wifi_nan_iface_hidl_test.cpp",
     ],
     static_libs: [
@@ -68,5 +70,23 @@
         "android.hardware.wifi@1.0",
         "libwifi-system-iface"
     ],
-    test_suites: ["general-tests"],
+    test_suites: ["general-tests", "vts-core"],
+}
+
+// These tests are split out so that they can be conditioned on presence of
+// the hostapd HAL, which indicates SoftAP support.
+cc_test {
+    name: "VtsHalWifiApV1_0TargetTest",
+    defaults: ["VtsHalTargetTestDefaults"],
+    srcs: [
+        "VtsHalWifiV1_0TargetTest.cpp",
+        "wifi_ap_iface_hidl_test.cpp",
+        "wifi_chip_hidl_ap_test.cpp",
+    ],
+    static_libs: [
+        "VtsHalWifiV1_0TargetTestUtil",
+        "android.hardware.wifi@1.0",
+        "libwifi-system-iface"
+    ],
+    test_suites: ["general-tests", "vts-core"],
 }
diff --git a/wifi/1.0/vts/functional/VtsHalWifiV1_0TargetTest.cpp b/wifi/1.0/vts/functional/VtsHalWifiV1_0TargetTest.cpp
index e7b8593..128dae5 100644
--- a/wifi/1.0/vts/functional/VtsHalWifiV1_0TargetTest.cpp
+++ b/wifi/1.0/vts/functional/VtsHalWifiV1_0TargetTest.cpp
@@ -14,37 +14,8 @@
  * limitations under the License.
  */
 
-#include <android-base/logging.h>
+#include <VtsHalHidlTargetTestEnvBase.h>
 
-#include "wifi_hidl_test_utils.h"
-
-class WifiVtsHidlEnvironment_1_0 : public WifiHidlEnvironment {
-   public:
-    // get the test environment singleton
-    static WifiVtsHidlEnvironment_1_0* Instance() {
-        static WifiVtsHidlEnvironment_1_0* instance =
-            new WifiVtsHidlEnvironment_1_0;
-        return instance;
-    }
-
-    virtual void registerTestServices() override {
-        registerTestService<android::hardware::wifi::V1_0::IWifi>();
-    }
-
-   private:
-    WifiVtsHidlEnvironment_1_0() {}
-};
-
-WifiHidlEnvironment* gEnv = WifiVtsHidlEnvironment_1_0::Instance();
-
-int main(int argc, char** argv) {
-    ::testing::AddGlobalTestEnvironment(gEnv);
-    ::testing::InitGoogleTest(&argc, argv);
-    gEnv->init(&argc, argv);
-    int status = gEnv->initFromOptions(argc, argv);
-    if (status == 0) {
-        status = RUN_ALL_TESTS();
-        LOG(INFO) << "Test result = " << status;
-    }
-    return status;
-}
+// TODO(b/143892896): Remove this file after wifi_hidl_test_utils.cpp is
+// updated.
+::testing::VtsHalHidlTargetTestEnvBase* gEnv = nullptr;
\ No newline at end of file
diff --git a/wifi/1.0/vts/functional/wifi_ap_iface_hidl_test.cpp b/wifi/1.0/vts/functional/wifi_ap_iface_hidl_test.cpp
index e5762f2..3599b94 100644
--- a/wifi/1.0/vts/functional/wifi_ap_iface_hidl_test.cpp
+++ b/wifi/1.0/vts/functional/wifi_ap_iface_hidl_test.cpp
@@ -16,39 +16,40 @@
 
 #include <android-base/logging.h>
 
+#include <android/hardware/wifi/1.0/IWifi.h>
 #include <android/hardware/wifi/1.0/IWifiApIface.h>
-
-#include <VtsHalHidlTargetTestBase.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 
 #include "wifi_hidl_call_util.h"
 #include "wifi_hidl_test_utils.h"
 
+using ::android::sp;
 using ::android::hardware::wifi::V1_0::IfaceType;
+using ::android::hardware::wifi::V1_0::IWifi;
 using ::android::hardware::wifi::V1_0::IWifiApIface;
 using ::android::hardware::wifi::V1_0::WifiBand;
 using ::android::hardware::wifi::V1_0::WifiStatusCode;
-using ::android::sp;
-
-extern WifiHidlEnvironment* gEnv;
 
 /**
  * Fixture to use for all AP Iface HIDL interface tests.
  */
-class WifiApIfaceHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+class WifiApIfaceHidlTest : public ::testing::TestWithParam<std::string> {
    public:
     virtual void SetUp() override {
-        if (!gEnv->isSoftApOn) return;
-        wifi_ap_iface_ = getWifiApIface();
+        // Make sure test starts with a clean state
+        stopWifi(GetInstanceName());
+
+        wifi_ap_iface_ = getWifiApIface(GetInstanceName());
         ASSERT_NE(nullptr, wifi_ap_iface_.get());
     }
 
-    virtual void TearDown() override {
-        if (!gEnv->isSoftApOn) return;
-        stopWifi();
-    }
+    virtual void TearDown() override { stopWifi(GetInstanceName()); }
 
    protected:
     sp<IWifiApIface> wifi_ap_iface_;
+    std::string GetInstanceName() { return GetParam(); }
 };
 
 /*
@@ -56,18 +57,15 @@
  * Ensures that an instance of the IWifiApIface proxy object is
  * successfully created.
  */
-TEST(WifiApIfaceHidlTestNoFixture, Create) {
-    if (!gEnv->isSoftApOn) return;
-    EXPECT_NE(nullptr, getWifiApIface().get());
-    stopWifi();
+TEST_P(WifiApIfaceHidlTest, Create) {
+    // The creation of a proxy object is tested as part of SetUp method.
 }
 
 /*
  * GetType:
  * Ensures that the correct interface type is returned for AP interface.
  */
-TEST_F(WifiApIfaceHidlTest, GetType) {
-    if (!gEnv->isSoftApOn) return;
+TEST_P(WifiApIfaceHidlTest, GetType) {
     const auto& status_and_type = HIDL_INVOKE(wifi_ap_iface_, getType);
     EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_type.first.code);
     EXPECT_EQ(IfaceType::AP, status_and_type.second);
@@ -78,8 +76,7 @@
  * Ensures that a call to set the country code will return with a success
  * status code.
  */
-TEST_F(WifiApIfaceHidlTest, SetCountryCode) {
-    if (!gEnv->isSoftApOn) return;
+TEST_P(WifiApIfaceHidlTest, SetCountryCode) {
     const android::hardware::hidl_array<int8_t, 2> kCountryCode{
         std::array<int8_t, 2>{{0x55, 0x53}}};
     EXPECT_EQ(WifiStatusCode::SUCCESS,
@@ -90,10 +87,15 @@
  * GetValidFrequenciesForBand:
  * Ensures that we can retrieve valid frequencies for 2.4 GHz band.
  */
-TEST_F(WifiApIfaceHidlTest, GetValidFrequenciesForBand) {
-    if (!gEnv->isSoftApOn) return;
+TEST_P(WifiApIfaceHidlTest, GetValidFrequenciesForBand) {
     const auto& status_and_freqs = HIDL_INVOKE(
         wifi_ap_iface_, getValidFrequenciesForBand, WifiBand::BAND_24GHZ);
     EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_freqs.first.code);
     EXPECT_GT(status_and_freqs.second.size(), 0u);
 }
+
+INSTANTIATE_TEST_SUITE_P(
+    PerInstance, WifiApIfaceHidlTest,
+    testing::ValuesIn(
+        android::hardware::getAllHalInstanceNames(IWifi::descriptor)),
+    android::hardware::PrintInstanceNameToString);
diff --git a/wifi/1.0/vts/functional/wifi_chip_hidl_ap_test.cpp b/wifi/1.0/vts/functional/wifi_chip_hidl_ap_test.cpp
new file mode 100644
index 0000000..5a2c6a7
--- /dev/null
+++ b/wifi/1.0/vts/functional/wifi_chip_hidl_ap_test.cpp
@@ -0,0 +1,183 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+
+#include <android/hardware/wifi/1.0/IWifi.h>
+#include <android/hardware/wifi/1.0/IWifiChip.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
+
+#include "wifi_hidl_call_util.h"
+#include "wifi_hidl_test_utils.h"
+
+using ::android::sp;
+using ::android::hardware::wifi::V1_0::ChipModeId;
+using ::android::hardware::wifi::V1_0::IfaceType;
+using ::android::hardware::wifi::V1_0::IWifi;
+using ::android::hardware::wifi::V1_0::IWifiApIface;
+using ::android::hardware::wifi::V1_0::IWifiChip;
+using ::android::hardware::wifi::V1_0::IWifiIface;
+using ::android::hardware::wifi::V1_0::WifiStatus;
+using ::android::hardware::wifi::V1_0::WifiStatusCode;
+
+/**
+ * Fixture for IWifiChip tests that are conditioned on SoftAP support.
+ */
+class WifiChipHidlApTest : public ::testing::TestWithParam<std::string> {
+   public:
+    virtual void SetUp() override {
+        // Make sure test starts with a clean state
+        stopWifi(GetInstanceName());
+
+        wifi_chip_ = getWifiChip(GetInstanceName());
+        ASSERT_NE(nullptr, wifi_chip_.get());
+    }
+
+    virtual void TearDown() override { stopWifi(GetInstanceName()); }
+
+   protected:
+    // Helper function to configure the Chip in one of the supported modes.
+    // Most of the non-mode-configuration-related methods require chip
+    // to be first configured.
+    ChipModeId configureChipForIfaceType(IfaceType type, bool expectSuccess) {
+        ChipModeId mode_id;
+        EXPECT_EQ(expectSuccess,
+                  configureChipToSupportIfaceType(wifi_chip_, type, &mode_id));
+        return mode_id;
+    }
+
+    std::string getIfaceName(const sp<IWifiIface>& iface) {
+        const auto& status_and_name = HIDL_INVOKE(iface, getName);
+        EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_name.first.code);
+        return status_and_name.second;
+    }
+
+    WifiStatusCode createApIface(sp<IWifiApIface>* ap_iface) {
+        const auto& status_and_iface = HIDL_INVOKE(wifi_chip_, createApIface);
+        *ap_iface = status_and_iface.second;
+        return status_and_iface.first.code;
+    }
+
+    WifiStatusCode removeApIface(const std::string& name) {
+        return HIDL_INVOKE(wifi_chip_, removeApIface, name).code;
+    }
+
+    sp<IWifiChip> wifi_chip_;
+
+   private:
+    std::string GetInstanceName() { return GetParam(); }
+};
+
+/*
+ * CreateApIface
+ * Configures the chip in AP mode and ensures that at least 1 iface creation
+ * succeeds.
+ */
+TEST_P(WifiChipHidlApTest, CreateApIface) {
+    configureChipForIfaceType(IfaceType::AP, true);
+
+    sp<IWifiApIface> iface;
+    EXPECT_EQ(WifiStatusCode::SUCCESS, createApIface(&iface));
+    EXPECT_NE(nullptr, iface.get());
+}
+
+/*
+ * GetApIfaceNames
+ * Configures the chip in AP mode and ensures that the iface list is empty
+ * before creating the iface. Then, create the iface and ensure that
+ * iface name is returned via the list.
+ */
+TEST_P(WifiChipHidlApTest, GetApIfaceNames) {
+    configureChipForIfaceType(IfaceType::AP, true);
+
+    const auto& status_and_iface_names1 =
+        HIDL_INVOKE(wifi_chip_, getApIfaceNames);
+    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_iface_names1.first.code);
+    EXPECT_EQ(0u, status_and_iface_names1.second.size());
+
+    sp<IWifiApIface> iface;
+    EXPECT_EQ(WifiStatusCode::SUCCESS, createApIface(&iface));
+    EXPECT_NE(nullptr, iface.get());
+
+    std::string iface_name = getIfaceName(iface);
+    const auto& status_and_iface_names2 =
+        HIDL_INVOKE(wifi_chip_, getApIfaceNames);
+    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_iface_names2.first.code);
+    EXPECT_EQ(1u, status_and_iface_names2.second.size());
+    EXPECT_EQ(iface_name, status_and_iface_names2.second[0]);
+
+    EXPECT_EQ(WifiStatusCode::SUCCESS, removeApIface(iface_name));
+    const auto& status_and_iface_names3 =
+        HIDL_INVOKE(wifi_chip_, getApIfaceNames);
+    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_iface_names3.first.code);
+    EXPECT_EQ(0u, status_and_iface_names3.second.size());
+}
+
+/*
+ * GetApIface
+ * Configures the chip in AP mode and create an iface. Then, retrieve
+ * the iface object using the correct name and ensure any other name
+ * doesn't retrieve an iface object.
+ */
+TEST_P(WifiChipHidlApTest, GetApIface) {
+    configureChipForIfaceType(IfaceType::AP, true);
+
+    sp<IWifiApIface> ap_iface;
+    EXPECT_EQ(WifiStatusCode::SUCCESS, createApIface(&ap_iface));
+    EXPECT_NE(nullptr, ap_iface.get());
+
+    std::string iface_name = getIfaceName(ap_iface);
+    const auto& status_and_iface1 =
+        HIDL_INVOKE(wifi_chip_, getApIface, iface_name);
+    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_iface1.first.code);
+    EXPECT_NE(nullptr, status_and_iface1.second.get());
+
+    std::string invalid_name = iface_name + "0";
+    const auto& status_and_iface2 =
+        HIDL_INVOKE(wifi_chip_, getApIface, invalid_name);
+    EXPECT_EQ(WifiStatusCode::ERROR_INVALID_ARGS, status_and_iface2.first.code);
+    EXPECT_EQ(nullptr, status_and_iface2.second.get());
+}
+
+/*
+ * RemoveApIface
+ * Configures the chip in AP mode and create an iface. Then, remove
+ * the iface object using the correct name and ensure any other name
+ * doesn't remove the iface.
+ */
+TEST_P(WifiChipHidlApTest, RemoveApIface) {
+    configureChipForIfaceType(IfaceType::AP, true);
+
+    sp<IWifiApIface> ap_iface;
+    EXPECT_EQ(WifiStatusCode::SUCCESS, createApIface(&ap_iface));
+    EXPECT_NE(nullptr, ap_iface.get());
+
+    std::string iface_name = getIfaceName(ap_iface);
+    std::string invalid_name = iface_name + "0";
+    EXPECT_EQ(WifiStatusCode::ERROR_INVALID_ARGS, removeApIface(invalid_name));
+    EXPECT_EQ(WifiStatusCode::SUCCESS, removeApIface(iface_name));
+
+    // No such iface exists now. So, this should return failure.
+    EXPECT_EQ(WifiStatusCode::ERROR_INVALID_ARGS, removeApIface(iface_name));
+}
+
+INSTANTIATE_TEST_SUITE_P(
+    PerInstance, WifiChipHidlApTest,
+    testing::ValuesIn(
+        android::hardware::getAllHalInstanceNames(IWifi::descriptor)),
+    android::hardware::PrintInstanceNameToString);
diff --git a/wifi/1.0/vts/functional/wifi_chip_hidl_nan_test.cpp b/wifi/1.0/vts/functional/wifi_chip_hidl_nan_test.cpp
new file mode 100644
index 0000000..c95f4d2
--- /dev/null
+++ b/wifi/1.0/vts/functional/wifi_chip_hidl_nan_test.cpp
@@ -0,0 +1,184 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+
+#include <android/hardware/wifi/1.0/IWifi.h>
+#include <android/hardware/wifi/1.0/IWifiChip.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
+
+#include "wifi_hidl_call_util.h"
+#include "wifi_hidl_test_utils.h"
+
+using ::android::sp;
+using ::android::hardware::wifi::V1_0::ChipModeId;
+using ::android::hardware::wifi::V1_0::IfaceType;
+using ::android::hardware::wifi::V1_0::IWifi;
+using ::android::hardware::wifi::V1_0::IWifiChip;
+using ::android::hardware::wifi::V1_0::IWifiIface;
+using ::android::hardware::wifi::V1_0::IWifiNanIface;
+using ::android::hardware::wifi::V1_0::WifiStatus;
+using ::android::hardware::wifi::V1_0::WifiStatusCode;
+
+/**
+ * Fixture for IWifiChip tests that are conditioned on NAN support.
+ */
+class WifiChipHidlNanTest : public ::testing::TestWithParam<std::string> {
+   public:
+    virtual void SetUp() override {
+        // Make sure test starts with a clean state
+        stopWifi(GetInstanceName());
+
+        wifi_chip_ = getWifiChip(GetInstanceName());
+        ASSERT_NE(nullptr, wifi_chip_.get());
+    }
+
+    virtual void TearDown() override { stopWifi(GetInstanceName()); }
+
+   protected:
+    // Helper function to configure the Chip in one of the supported modes.
+    // Most of the non-mode-configuration-related methods require chip
+    // to be first configured.
+    ChipModeId configureChipForIfaceType(IfaceType type, bool expectSuccess) {
+        ChipModeId mode_id;
+        EXPECT_EQ(expectSuccess,
+                  configureChipToSupportIfaceType(wifi_chip_, type, &mode_id));
+        return mode_id;
+    }
+
+    std::string getIfaceName(const sp<IWifiIface>& iface) {
+        const auto& status_and_name = HIDL_INVOKE(iface, getName);
+        EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_name.first.code);
+        return status_and_name.second;
+    }
+
+    WifiStatusCode createNanIface(sp<IWifiNanIface>* nan_iface) {
+        const auto& status_and_iface = HIDL_INVOKE(wifi_chip_, createNanIface);
+        *nan_iface = status_and_iface.second;
+        return status_and_iface.first.code;
+    }
+
+    WifiStatusCode removeNanIface(const std::string& name) {
+        return HIDL_INVOKE(wifi_chip_, removeNanIface, name).code;
+    }
+
+    sp<IWifiChip> wifi_chip_;
+
+   private:
+    std::string GetInstanceName() { return GetParam(); }
+};
+
+/*
+ * CreateNanIface
+ * Configures the chip in NAN mode and ensures that at least 1 iface creation
+ * succeeds.
+ */
+TEST_P(WifiChipHidlNanTest, CreateNanIface) {
+    configureChipForIfaceType(IfaceType::NAN, true);
+
+    sp<IWifiNanIface> iface;
+    ASSERT_EQ(WifiStatusCode::SUCCESS, createNanIface(&iface));
+    EXPECT_NE(nullptr, iface.get());
+}
+
+/*
+ * GetNanIfaceNames
+ * Configures the chip in NAN mode and ensures that the iface list is empty
+ * before creating the iface. Then, create the iface and ensure that
+ * iface name is returned via the list.
+ */
+TEST_P(WifiChipHidlNanTest, GetNanIfaceNames) {
+    configureChipForIfaceType(IfaceType::NAN, true);
+
+    const auto& status_and_iface_names1 =
+        HIDL_INVOKE(wifi_chip_, getNanIfaceNames);
+    ASSERT_EQ(WifiStatusCode::SUCCESS, status_and_iface_names1.first.code);
+    EXPECT_EQ(0u, status_and_iface_names1.second.size());
+
+    sp<IWifiNanIface> iface;
+    EXPECT_EQ(WifiStatusCode::SUCCESS, createNanIface(&iface));
+    EXPECT_NE(nullptr, iface.get());
+
+    std::string iface_name = getIfaceName(iface);
+    const auto& status_and_iface_names2 =
+        HIDL_INVOKE(wifi_chip_, getNanIfaceNames);
+    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_iface_names2.first.code);
+    EXPECT_EQ(1u, status_and_iface_names2.second.size());
+    EXPECT_EQ(iface_name, status_and_iface_names2.second[0]);
+
+    EXPECT_EQ(WifiStatusCode::SUCCESS, removeNanIface(iface_name));
+    const auto& status_and_iface_names3 =
+        HIDL_INVOKE(wifi_chip_, getNanIfaceNames);
+    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_iface_names3.first.code);
+    EXPECT_EQ(0u, status_and_iface_names3.second.size());
+}
+
+/*
+ * GetNanIface
+ * Configures the chip in NAN mode and create an iface. Then, retrieve
+ * the iface object using the correct name and ensure any other name
+ * doesn't retrieve an iface object.
+ */
+TEST_P(WifiChipHidlNanTest, GetNanIface) {
+    configureChipForIfaceType(IfaceType::NAN, true);
+
+    sp<IWifiNanIface> nan_iface;
+    EXPECT_EQ(WifiStatusCode::SUCCESS, createNanIface(&nan_iface));
+    EXPECT_NE(nullptr, nan_iface.get());
+
+    std::string iface_name = getIfaceName(nan_iface);
+    const auto& status_and_iface1 =
+        HIDL_INVOKE(wifi_chip_, getNanIface, iface_name);
+    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_iface1.first.code);
+    EXPECT_NE(nullptr, status_and_iface1.second.get());
+
+    std::string invalid_name = iface_name + "0";
+    const auto& status_and_iface2 =
+        HIDL_INVOKE(wifi_chip_, getNanIface, invalid_name);
+    EXPECT_EQ(WifiStatusCode::ERROR_INVALID_ARGS, status_and_iface2.first.code);
+    EXPECT_EQ(nullptr, status_and_iface2.second.get());
+}
+
+/*
+ * RemoveNanIface
+ * Configures the chip in NAN mode and create an iface. Then, remove
+ * the iface object using the correct name and ensure any other name
+ * doesn't remove the iface.
+ */
+TEST_P(WifiChipHidlNanTest, RemoveNanIface) {
+    configureChipForIfaceType(IfaceType::NAN, true);
+
+    sp<IWifiNanIface> nan_iface;
+    EXPECT_EQ(WifiStatusCode::SUCCESS, createNanIface(&nan_iface));
+    EXPECT_NE(nullptr, nan_iface.get());
+
+    std::string iface_name = getIfaceName(nan_iface);
+    std::string invalid_name = iface_name + "0";
+    EXPECT_EQ(WifiStatusCode::ERROR_INVALID_ARGS, removeNanIface(invalid_name));
+
+    EXPECT_EQ(WifiStatusCode::SUCCESS, removeNanIface(iface_name));
+
+    // No such iface exists now. So, this should return failure.
+    EXPECT_EQ(WifiStatusCode::ERROR_INVALID_ARGS, removeNanIface(iface_name));
+}
+
+INSTANTIATE_TEST_SUITE_P(
+    PerInstance, WifiChipHidlNanTest,
+    testing::ValuesIn(
+        android::hardware::getAllHalInstanceNames(IWifi::descriptor)),
+    android::hardware::PrintInstanceNameToString);
diff --git a/wifi/1.0/vts/functional/wifi_chip_hidl_test.cpp b/wifi/1.0/vts/functional/wifi_chip_hidl_test.cpp
index 1b7e821..f332001 100644
--- a/wifi/1.0/vts/functional/wifi_chip_hidl_test.cpp
+++ b/wifi/1.0/vts/functional/wifi_chip_hidl_test.cpp
@@ -16,10 +16,12 @@
 
 #include <android-base/logging.h>
 
+#include <android/hardware/wifi/1.0/IWifi.h>
 #include <android/hardware/wifi/1.0/IWifiChip.h>
 #include <android/hardware/wifi/1.3/IWifiChip.h>
-
-#include <VtsHalHidlTargetTestBase.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 
 #include "wifi_hidl_call_util.h"
 #include "wifi_hidl_test_utils.h"
@@ -27,21 +29,20 @@
 using ::android::sp;
 using ::android::hardware::hidl_string;
 using ::android::hardware::hidl_vec;
-using ::android::hardware::wifi::V1_0::IfaceType;
 using ::android::hardware::wifi::V1_0::ChipId;
 using ::android::hardware::wifi::V1_0::ChipModeId;
-using ::android::hardware::wifi::V1_0::WifiDebugRingBufferStatus;
-using ::android::hardware::wifi::V1_0::WifiDebugRingBufferVerboseLevel;
-using ::android::hardware::wifi::V1_0::WifiDebugHostWakeReasonStats;
-using ::android::hardware::wifi::V1_0::WifiStatus;
-using ::android::hardware::wifi::V1_0::WifiStatusCode;
+using ::android::hardware::wifi::V1_0::IfaceType;
+using ::android::hardware::wifi::V1_0::IWifi;
 using ::android::hardware::wifi::V1_0::IWifiChip;
-using ::android::hardware::wifi::V1_0::IWifiApIface;
 using ::android::hardware::wifi::V1_0::IWifiIface;
-using ::android::hardware::wifi::V1_0::IWifiNanIface;
 using ::android::hardware::wifi::V1_0::IWifiP2pIface;
 using ::android::hardware::wifi::V1_0::IWifiRttController;
 using ::android::hardware::wifi::V1_0::IWifiStaIface;
+using ::android::hardware::wifi::V1_0::WifiDebugHostWakeReasonStats;
+using ::android::hardware::wifi::V1_0::WifiDebugRingBufferStatus;
+using ::android::hardware::wifi::V1_0::WifiDebugRingBufferVerboseLevel;
+using ::android::hardware::wifi::V1_0::WifiStatus;
+using ::android::hardware::wifi::V1_0::WifiStatusCode;
 
 extern WifiHidlEnvironment* gEnv;
 
@@ -64,16 +65,22 @@
 }  // namespace
 
 /**
- * Fixture to use for all Wifi chip HIDL interface tests.
+ * Fixture for IWifiChip tests.
+ *
+ * Tests that require SoftAP or NAN support should go into WifiChipHidlApTest or
+ * WifiChipHidlNanTest respectively.
  */
-class WifiChipHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+class WifiChipHidlTest : public ::testing::TestWithParam<std::string> {
    public:
     virtual void SetUp() override {
-        wifi_chip_ = getWifiChip();
+        // Make sure test starts with a clean state
+        stopWifi(GetInstanceName());
+
+        wifi_chip_ = getWifiChip(GetInstanceName());
         ASSERT_NE(nullptr, wifi_chip_.get());
     }
 
-    virtual void TearDown() override { stopWifi(); }
+    virtual void TearDown() override { stopWifi(GetInstanceName()); }
 
    protected:
     // Helper function to configure the Chip in one of the supported modes.
@@ -114,26 +121,6 @@
         return status_and_name.second;
     }
 
-    WifiStatusCode createApIface(sp<IWifiApIface>* ap_iface) {
-        const auto& status_and_iface = HIDL_INVOKE(wifi_chip_, createApIface);
-        *ap_iface = status_and_iface.second;
-        return status_and_iface.first.code;
-    }
-
-    WifiStatusCode removeApIface(const std::string& name) {
-        return HIDL_INVOKE(wifi_chip_, removeApIface, name).code;
-    }
-
-    WifiStatusCode createNanIface(sp<IWifiNanIface>* nan_iface) {
-        const auto& status_and_iface = HIDL_INVOKE(wifi_chip_, createNanIface);
-        *nan_iface = status_and_iface.second;
-        return status_and_iface.first.code;
-    }
-
-    WifiStatusCode removeNanIface(const std::string& name) {
-        return HIDL_INVOKE(wifi_chip_, removeNanIface, name).code;
-    }
-
     WifiStatusCode createP2pIface(sp<IWifiP2pIface>* p2p_iface) {
         const auto& status_and_iface = HIDL_INVOKE(wifi_chip_, createP2pIface);
         *p2p_iface = status_and_iface.second;
@@ -155,6 +142,9 @@
     }
 
     sp<IWifiChip> wifi_chip_;
+
+   protected:
+    std::string GetInstanceName() { return GetParam(); }
 };
 
 /*
@@ -162,15 +152,14 @@
  * Ensures that an instance of the IWifiChip proxy object is
  * successfully created.
  */
-TEST(WifiChipHidlTestNoFixture, Create) {
-    EXPECT_NE(nullptr, getWifiChip().get());
-    stopWifi();
+TEST_P(WifiChipHidlTest, Create) {
+    // The creation of a proxy object is tested as part of SetUp method.
 }
 
 /*
  * GetId:
  */
-TEST_F(WifiChipHidlTest, GetId) {
+TEST_P(WifiChipHidlTest, GetId) {
     EXPECT_EQ(WifiStatusCode::SUCCESS,
               HIDL_INVOKE(wifi_chip_, getId).first.code);
 }
@@ -178,7 +167,7 @@
 /*
  * GetAvailableMode:
  */
-TEST_F(WifiChipHidlTest, GetAvailableModes) {
+TEST_P(WifiChipHidlTest, GetAvailableModes) {
     const auto& status_and_modes = HIDL_INVOKE(wifi_chip_, getAvailableModes);
     EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_modes.first.code);
     EXPECT_LT(0u, status_and_modes.second.size());
@@ -187,17 +176,17 @@
 /*
  * ConfigureChip:
  */
-TEST_F(WifiChipHidlTest, ConfigureChip) {
+TEST_P(WifiChipHidlTest, ConfigureChip) {
     const auto& status_and_modes = HIDL_INVOKE(wifi_chip_, getAvailableModes);
     EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_modes.first.code);
     EXPECT_LT(0u, status_and_modes.second.size());
     for (const auto& mode : status_and_modes.second) {
         // configureChip() requires to be called with a fresh IWifiChip object.
-        wifi_chip_ = getWifiChip();
+        wifi_chip_ = getWifiChip(GetInstanceName());
         ASSERT_NE(nullptr, wifi_chip_.get());
         EXPECT_EQ(WifiStatusCode::SUCCESS,
                   HIDL_INVOKE(wifi_chip_, configureChip, mode.id).code);
-        stopWifi();
+        stopWifi(GetInstanceName());
         // Sleep for 5 milliseconds between each wifi state toggle.
         usleep(5000);
     }
@@ -206,7 +195,7 @@
 /*
  * GetCapabilities:
  */
-TEST_F(WifiChipHidlTest, GetCapabilities) {
+TEST_P(WifiChipHidlTest, GetCapabilities) {
     configureChipForIfaceType(IfaceType::STA, true);
     const auto& status_and_caps = HIDL_INVOKE(wifi_chip_, getCapabilities);
     if (status_and_caps.first.code != WifiStatusCode::SUCCESS) {
@@ -219,7 +208,7 @@
 /*
  * GetMode:
  */
-TEST_F(WifiChipHidlTest, GetMode) {
+TEST_P(WifiChipHidlTest, GetMode) {
     ChipModeId chip_mode_id = configureChipForIfaceType(IfaceType::STA, true);
     const auto& status_and_mode = HIDL_INVOKE(wifi_chip_, getMode);
     EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_mode.first.code);
@@ -229,7 +218,7 @@
 /*
  * RequestChipDebugInfo:
  */
-TEST_F(WifiChipHidlTest, RequestChipDebugInfo) {
+TEST_P(WifiChipHidlTest, RequestChipDebugInfo) {
     configureChipForIfaceType(IfaceType::STA, true);
     const auto& status_and_chip_info =
         HIDL_INVOKE(wifi_chip_, requestChipDebugInfo);
@@ -241,7 +230,7 @@
 /*
  * RequestFirmwareDebugDump
  */
-TEST_F(WifiChipHidlTest, RequestFirmwareDebugDump) {
+TEST_P(WifiChipHidlTest, RequestFirmwareDebugDump) {
     uint32_t caps = configureChipForStaIfaceAndGetCapabilities();
     const auto& status_and_firmware_dump =
         HIDL_INVOKE(wifi_chip_, requestFirmwareDebugDump);
@@ -256,7 +245,7 @@
 /*
  * RequestDriverDebugDump
  */
-TEST_F(WifiChipHidlTest, RequestDriverDebugDump) {
+TEST_P(WifiChipHidlTest, RequestDriverDebugDump) {
     uint32_t caps = configureChipForStaIfaceAndGetCapabilities();
     const auto& status_and_driver_dump =
         HIDL_INVOKE(wifi_chip_, requestDriverDebugDump);
@@ -273,7 +262,7 @@
 /*
  * GetDebugRingBuffersStatus
  */
-TEST_F(WifiChipHidlTest, GetDebugRingBuffersStatus) {
+TEST_P(WifiChipHidlTest, GetDebugRingBuffersStatus) {
     uint32_t caps = configureChipForStaIfaceAndGetCapabilities();
     const auto& status_and_ring_buffer_status =
         HIDL_INVOKE(wifi_chip_, getDebugRingBuffersStatus);
@@ -292,7 +281,7 @@
 /*
  * StartLoggingToDebugRingBuffer
  */
-TEST_F(WifiChipHidlTest, StartLoggingToDebugRingBuffer) {
+TEST_P(WifiChipHidlTest, StartLoggingToDebugRingBuffer) {
     uint32_t caps = configureChipForStaIfaceAndGetCapabilities();
     std::string ring_name;
     const auto& status_and_ring_buffer_status =
@@ -320,7 +309,7 @@
 /*
  * ForceDumpToDebugRingBuffer
  */
-TEST_F(WifiChipHidlTest, ForceDumpToDebugRingBuffer) {
+TEST_P(WifiChipHidlTest, ForceDumpToDebugRingBuffer) {
     uint32_t caps = configureChipForStaIfaceAndGetCapabilities();
     std::string ring_name;
     const auto& status_and_ring_buffer_status =
@@ -346,7 +335,7 @@
 /*
  * GetDebugHostWakeReasonStats
  */
-TEST_F(WifiChipHidlTest, GetDebugHostWakeReasonStats) {
+TEST_P(WifiChipHidlTest, GetDebugHostWakeReasonStats) {
     uint32_t caps = configureChipForStaIfaceAndGetCapabilities();
     const auto& status_and_debug_wake_reason =
         HIDL_INVOKE(wifi_chip_, getDebugHostWakeReasonStats);
@@ -360,206 +349,11 @@
 }
 
 /*
- * CreateApIface
- * Configures the chip in AP mode and ensures that at least 1 iface creation
- * succeeds.
- */
-TEST_F(WifiChipHidlTest, CreateApIface) {
-    if (!gEnv->isSoftApOn) return;
-    configureChipForIfaceType(IfaceType::AP, true);
-
-    sp<IWifiApIface> iface;
-    EXPECT_EQ(WifiStatusCode::SUCCESS, createApIface(&iface));
-    EXPECT_NE(nullptr, iface.get());
-}
-
-/*
- * GetApIfaceNames
- * Configures the chip in AP mode and ensures that the iface list is empty
- * before creating the iface. Then, create the iface and ensure that
- * iface name is returned via the list.
- */
-TEST_F(WifiChipHidlTest, GetApIfaceNames) {
-    if (!gEnv->isSoftApOn) return;
-    configureChipForIfaceType(IfaceType::AP, true);
-
-    const auto& status_and_iface_names1 =
-        HIDL_INVOKE(wifi_chip_, getApIfaceNames);
-    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_iface_names1.first.code);
-    EXPECT_EQ(0u, status_and_iface_names1.second.size());
-
-    sp<IWifiApIface> iface;
-    EXPECT_EQ(WifiStatusCode::SUCCESS, createApIface(&iface));
-    EXPECT_NE(nullptr, iface.get());
-
-    std::string iface_name = getIfaceName(iface);
-    const auto& status_and_iface_names2 =
-        HIDL_INVOKE(wifi_chip_, getApIfaceNames);
-    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_iface_names2.first.code);
-    EXPECT_EQ(1u, status_and_iface_names2.second.size());
-    EXPECT_EQ(iface_name, status_and_iface_names2.second[0]);
-
-    EXPECT_EQ(WifiStatusCode::SUCCESS, removeApIface(iface_name));
-    const auto& status_and_iface_names3 =
-        HIDL_INVOKE(wifi_chip_, getApIfaceNames);
-    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_iface_names3.first.code);
-    EXPECT_EQ(0u, status_and_iface_names3.second.size());
-}
-
-/*
- * GetApIface
- * Configures the chip in AP mode and create an iface. Then, retrieve
- * the iface object using the correct name and ensure any other name
- * doesn't retrieve an iface object.
- */
-TEST_F(WifiChipHidlTest, GetApIface) {
-    if (!gEnv->isSoftApOn) return;
-    configureChipForIfaceType(IfaceType::AP, true);
-
-    sp<IWifiApIface> ap_iface;
-    EXPECT_EQ(WifiStatusCode::SUCCESS, createApIface(&ap_iface));
-    EXPECT_NE(nullptr, ap_iface.get());
-
-    std::string iface_name = getIfaceName(ap_iface);
-    const auto& status_and_iface1 =
-        HIDL_INVOKE(wifi_chip_, getApIface, iface_name);
-    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_iface1.first.code);
-    EXPECT_NE(nullptr, status_and_iface1.second.get());
-
-    std::string invalid_name = iface_name + "0";
-    const auto& status_and_iface2 =
-        HIDL_INVOKE(wifi_chip_, getApIface, invalid_name);
-    EXPECT_EQ(WifiStatusCode::ERROR_INVALID_ARGS, status_and_iface2.first.code);
-    EXPECT_EQ(nullptr, status_and_iface2.second.get());
-}
-
-/*
- * RemoveApIface
- * Configures the chip in AP mode and create an iface. Then, remove
- * the iface object using the correct name and ensure any other name
- * doesn't remove the iface.
- */
-TEST_F(WifiChipHidlTest, RemoveApIface) {
-    if (!gEnv->isSoftApOn) return;
-    configureChipForIfaceType(IfaceType::AP, true);
-
-    sp<IWifiApIface> ap_iface;
-    EXPECT_EQ(WifiStatusCode::SUCCESS, createApIface(&ap_iface));
-    EXPECT_NE(nullptr, ap_iface.get());
-
-    std::string iface_name = getIfaceName(ap_iface);
-    std::string invalid_name = iface_name + "0";
-    EXPECT_EQ(WifiStatusCode::ERROR_INVALID_ARGS, removeApIface(invalid_name));
-    EXPECT_EQ(WifiStatusCode::SUCCESS, removeApIface(iface_name));
-
-    // No such iface exists now. So, this should return failure.
-    EXPECT_EQ(WifiStatusCode::ERROR_INVALID_ARGS, removeApIface(iface_name));
-}
-
-/*
- * CreateNanIface
- * Configures the chip in NAN mode and ensures that at least 1 iface creation
- * succeeds.
- */
-TEST_F(WifiChipHidlTest, CreateNanIface) {
-    if (!gEnv->isNanOn) return;
-    configureChipForIfaceType(IfaceType::NAN, gEnv->isNanOn);
-
-    sp<IWifiNanIface> iface;
-    ASSERT_EQ(WifiStatusCode::SUCCESS, createNanIface(&iface));
-    EXPECT_NE(nullptr, iface.get());
-}
-
-/*
- * GetNanIfaceNames
- * Configures the chip in NAN mode and ensures that the iface list is empty
- * before creating the iface. Then, create the iface and ensure that
- * iface name is returned via the list.
- */
-TEST_F(WifiChipHidlTest, GetNanIfaceNames) {
-    if (!gEnv->isNanOn) return;
-    configureChipForIfaceType(IfaceType::NAN, gEnv->isNanOn);
-
-    const auto& status_and_iface_names1 =
-        HIDL_INVOKE(wifi_chip_, getNanIfaceNames);
-    ASSERT_EQ(WifiStatusCode::SUCCESS, status_and_iface_names1.first.code);
-    EXPECT_EQ(0u, status_and_iface_names1.second.size());
-
-    sp<IWifiNanIface> iface;
-    EXPECT_EQ(WifiStatusCode::SUCCESS, createNanIface(&iface));
-    EXPECT_NE(nullptr, iface.get());
-
-    std::string iface_name = getIfaceName(iface);
-    const auto& status_and_iface_names2 =
-        HIDL_INVOKE(wifi_chip_, getNanIfaceNames);
-    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_iface_names2.first.code);
-    EXPECT_EQ(1u, status_and_iface_names2.second.size());
-    EXPECT_EQ(iface_name, status_and_iface_names2.second[0]);
-
-    EXPECT_EQ(WifiStatusCode::SUCCESS, removeNanIface(iface_name));
-    const auto& status_and_iface_names3 =
-        HIDL_INVOKE(wifi_chip_, getNanIfaceNames);
-    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_iface_names3.first.code);
-    EXPECT_EQ(0u, status_and_iface_names3.second.size());
-}
-
-/*
- * GetNanIface
- * Configures the chip in NAN mode and create an iface. Then, retrieve
- * the iface object using the correct name and ensure any other name
- * doesn't retrieve an iface object.
- */
-TEST_F(WifiChipHidlTest, GetNanIface) {
-    if (!gEnv->isNanOn) return;
-    configureChipForIfaceType(IfaceType::NAN, gEnv->isNanOn);
-
-    sp<IWifiNanIface> nan_iface;
-    EXPECT_EQ(WifiStatusCode::SUCCESS, createNanIface(&nan_iface));
-    EXPECT_NE(nullptr, nan_iface.get());
-
-    std::string iface_name = getIfaceName(nan_iface);
-    const auto& status_and_iface1 =
-        HIDL_INVOKE(wifi_chip_, getNanIface, iface_name);
-    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_iface1.first.code);
-    EXPECT_NE(nullptr, status_and_iface1.second.get());
-
-    std::string invalid_name = iface_name + "0";
-    const auto& status_and_iface2 =
-        HIDL_INVOKE(wifi_chip_, getNanIface, invalid_name);
-    EXPECT_EQ(WifiStatusCode::ERROR_INVALID_ARGS, status_and_iface2.first.code);
-    EXPECT_EQ(nullptr, status_and_iface2.second.get());
-}
-
-/*
- * RemoveNanIface
- * Configures the chip in NAN mode and create an iface. Then, remove
- * the iface object using the correct name and ensure any other name
- * doesn't remove the iface.
- */
-TEST_F(WifiChipHidlTest, RemoveNanIface) {
-    if (!gEnv->isNanOn) return;
-    configureChipForIfaceType(IfaceType::NAN, gEnv->isNanOn);
-
-    sp<IWifiNanIface> nan_iface;
-    EXPECT_EQ(WifiStatusCode::SUCCESS, createNanIface(&nan_iface));
-    EXPECT_NE(nullptr, nan_iface.get());
-
-    std::string iface_name = getIfaceName(nan_iface);
-    std::string invalid_name = iface_name + "0";
-    EXPECT_EQ(WifiStatusCode::ERROR_INVALID_ARGS, removeNanIface(invalid_name));
-
-    EXPECT_EQ(WifiStatusCode::SUCCESS, removeNanIface(iface_name));
-
-    // No such iface exists now. So, this should return failure.
-    EXPECT_EQ(WifiStatusCode::ERROR_INVALID_ARGS, removeNanIface(iface_name));
-}
-
-/*
  * CreateP2pIface
  * Configures the chip in P2P mode and ensures that at least 1 iface creation
  * succeeds.
  */
-TEST_F(WifiChipHidlTest, CreateP2pIface) {
+TEST_P(WifiChipHidlTest, CreateP2pIface) {
     configureChipForIfaceType(IfaceType::P2P, true);
 
     sp<IWifiP2pIface> iface;
@@ -573,7 +367,7 @@
  * before creating the iface. Then, create the iface and ensure that
  * iface name is returned via the list.
  */
-TEST_F(WifiChipHidlTest, GetP2pIfaceNames) {
+TEST_P(WifiChipHidlTest, GetP2pIfaceNames) {
     configureChipForIfaceType(IfaceType::P2P, true);
 
     const auto& status_and_iface_names1 =
@@ -605,7 +399,7 @@
  * the iface object using the correct name and ensure any other name
  * doesn't retrieve an iface object.
  */
-TEST_F(WifiChipHidlTest, GetP2pIface) {
+TEST_P(WifiChipHidlTest, GetP2pIface) {
     configureChipForIfaceType(IfaceType::P2P, true);
 
     sp<IWifiP2pIface> p2p_iface;
@@ -631,7 +425,7 @@
  * the iface object using the correct name and ensure any other name
  * doesn't remove the iface.
  */
-TEST_F(WifiChipHidlTest, RemoveP2pIface) {
+TEST_P(WifiChipHidlTest, RemoveP2pIface) {
     configureChipForIfaceType(IfaceType::P2P, true);
 
     sp<IWifiP2pIface> p2p_iface;
@@ -652,7 +446,7 @@
  * Configures the chip in STA mode and ensures that at least 1 iface creation
  * succeeds.
  */
-TEST_F(WifiChipHidlTest, CreateStaIface) {
+TEST_P(WifiChipHidlTest, CreateStaIface) {
     configureChipForIfaceType(IfaceType::STA, true);
 
     sp<IWifiStaIface> iface;
@@ -666,7 +460,7 @@
  * before creating the iface. Then, create the iface and ensure that
  * iface name is returned via the list.
  */
-TEST_F(WifiChipHidlTest, GetStaIfaceNames) {
+TEST_P(WifiChipHidlTest, GetStaIfaceNames) {
     configureChipForIfaceType(IfaceType::STA, true);
 
     const auto& status_and_iface_names1 =
@@ -698,7 +492,7 @@
  * the iface object using the correct name and ensure any other name
  * doesn't retrieve an iface object.
  */
-TEST_F(WifiChipHidlTest, GetStaIface) {
+TEST_P(WifiChipHidlTest, GetStaIface) {
     configureChipForIfaceType(IfaceType::STA, true);
 
     sp<IWifiStaIface> sta_iface;
@@ -724,7 +518,7 @@
  * the iface object using the correct name and ensure any other name
  * doesn't remove the iface.
  */
-TEST_F(WifiChipHidlTest, RemoveStaIface) {
+TEST_P(WifiChipHidlTest, RemoveStaIface) {
     configureChipForIfaceType(IfaceType::STA, true);
 
     sp<IWifiStaIface> sta_iface;
@@ -743,7 +537,7 @@
 /*
  * CreateRttController
  */
-TEST_F(WifiChipHidlTest, CreateRttController) {
+TEST_P(WifiChipHidlTest, CreateRttController) {
     configureChipForIfaceType(IfaceType::STA, true);
 
     sp<IWifiStaIface> iface;
@@ -752,6 +546,16 @@
 
     const auto& status_and_rtt_controller =
         HIDL_INVOKE(wifi_chip_, createRttController, iface);
-    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_rtt_controller.first.code);
-    EXPECT_NE(nullptr, status_and_rtt_controller.second.get());
+    if (status_and_rtt_controller.first.code !=
+        WifiStatusCode::ERROR_NOT_SUPPORTED) {
+        EXPECT_EQ(WifiStatusCode::SUCCESS,
+                  status_and_rtt_controller.first.code);
+        EXPECT_NE(nullptr, status_and_rtt_controller.second.get());
+    }
 }
+
+INSTANTIATE_TEST_SUITE_P(
+    PerInstance, WifiChipHidlTest,
+    testing::ValuesIn(
+        android::hardware::getAllHalInstanceNames(IWifi::descriptor)),
+    android::hardware::PrintInstanceNameToString);
diff --git a/wifi/1.0/vts/functional/wifi_hidl_test.cpp b/wifi/1.0/vts/functional/wifi_hidl_test.cpp
index b8e501c..f3c82da 100644
--- a/wifi/1.0/vts/functional/wifi_hidl_test.cpp
+++ b/wifi/1.0/vts/functional/wifi_hidl_test.cpp
@@ -18,7 +18,9 @@
 
 #include <android/hardware/wifi/1.0/IWifi.h>
 
-#include <VtsHalHidlTargetTestBase.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 
 #include "wifi_hidl_test_utils.h"
 
@@ -28,13 +30,17 @@
 /**
  * Fixture to use for all root Wifi HIDL interface tests.
  */
-class WifiHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+class WifiHidlTest : public ::testing::TestWithParam<std::string> {
    public:
-    virtual void SetUp() override {}
+    virtual void SetUp() override {
+        // Make sure test starts with a clean state
+        stopWifi(GetInstanceName());
+    }
 
-    virtual void TearDown() override { stopWifi(); }
+    virtual void TearDown() override { stopWifi(GetInstanceName()); }
 
    protected:
+    std::string GetInstanceName() { return GetParam(); }
 };
 
 /*
@@ -42,7 +48,12 @@
  * Ensures that an instance of the IWifi proxy object is
  * successfully created.
  */
-TEST(WifiHidlTestNoFixture, Create) {
-    EXPECT_NE(nullptr, getWifi().get());
-    stopWifi();
+TEST_P(WifiHidlTest, Create) {
+    // The creation of a proxy object is tested as part of SetUp method.
 }
+
+INSTANTIATE_TEST_SUITE_P(
+    PerInstance, WifiHidlTest,
+    testing::ValuesIn(
+        android::hardware::getAllHalInstanceNames(IWifi::descriptor)),
+    android::hardware::PrintInstanceNameToString);
diff --git a/wifi/1.0/vts/functional/wifi_hidl_test_utils.cpp b/wifi/1.0/vts/functional/wifi_hidl_test_utils.cpp
index d584d4b..26e4821 100644
--- a/wifi/1.0/vts/functional/wifi_hidl_test_utils.cpp
+++ b/wifi/1.0/vts/functional/wifi_hidl_test_utils.cpp
@@ -209,23 +209,6 @@
     return status_and_iface.second;
 }
 
-sp<IWifiRttController> getWifiRttController(const std::string& instance_name) {
-    sp<IWifiChip> wifi_chip = getWifiChip(instance_name);
-    if (!wifi_chip.get()) {
-        return nullptr;
-    }
-    sp<IWifiStaIface> wifi_sta_iface = getWifiStaIface(instance_name);
-    if (!wifi_sta_iface.get()) {
-        return nullptr;
-    }
-    const auto& status_and_controller =
-        HIDL_INVOKE(wifi_chip, createRttController, wifi_sta_iface);
-    if (status_and_controller.first.code != WifiStatusCode::SUCCESS) {
-        return nullptr;
-    }
-    return status_and_controller.second;
-}
-
 bool configureChipToSupportIfaceType(const sp<IWifiChip>& wifi_chip,
                                      IfaceType type,
                                      ChipModeId* configured_mode_id) {
diff --git a/wifi/1.0/vts/functional/wifi_hidl_test_utils.h b/wifi/1.0/vts/functional/wifi_hidl_test_utils.h
index 529b142..8660134 100644
--- a/wifi/1.0/vts/functional/wifi_hidl_test_utils.h
+++ b/wifi/1.0/vts/functional/wifi_hidl_test_utils.h
@@ -44,8 +44,6 @@
     const std::string& instance_name = "");
 android::sp<android::hardware::wifi::V1_0::IWifiStaIface> getWifiStaIface(
     const std::string& instance_name = "");
-android::sp<android::hardware::wifi::V1_0::IWifiRttController>
-getWifiRttController(const std::string& instance_name = "");
 // Configure the chip in a mode to support the creation of the provided
 // iface type.
 bool configureChipToSupportIfaceType(
@@ -61,48 +59,4 @@
         stopWifi();
         sleep(5);
     }
-
-   public:
-    // Whether NaN feature is supported on the device.
-    bool isNanOn = false;
-    // Whether SoftAp feature is supported on the device.
-    bool isSoftApOn = false;
-
-    void usage(char* me, char* arg) {
-        fprintf(stderr,
-                "unrecognized option: %s\n\n"
-                "usage: %s <gtest options> <test options>\n\n"
-                "test options are:\n\n"
-                "-N, --nan_on: Whether NAN feature is supported\n"
-                "-S, --softap_on: Whether SOFTAP feature is supported\n",
-                arg, me);
-    }
-
-    int initFromOptions(int argc, char** argv) {
-        static struct option options[] = {{"nan_on", no_argument, 0, 'N'},
-                                          {"softap_on", no_argument, 0, 'S'},
-                                          {0, 0, 0, 0}};
-
-        int c;
-        while ((c = getopt_long(argc, argv, "NS", options, NULL)) >= 0) {
-            switch (c) {
-                case 'N':
-                    isNanOn = true;
-                    break;
-                case 'S':
-                    isSoftApOn = true;
-                    break;
-                default:
-                    usage(argv[0], argv[optind]);
-                    return 2;
-            }
-        }
-
-        if (optind < argc) {
-            usage(argv[0], argv[optind]);
-            return 2;
-        }
-
-        return 0;
-    }
 };
diff --git a/wifi/1.0/vts/functional/wifi_nan_iface_hidl_test.cpp b/wifi/1.0/vts/functional/wifi_nan_iface_hidl_test.cpp
index 64b4fb6..47a1938 100644
--- a/wifi/1.0/vts/functional/wifi_nan_iface_hidl_test.cpp
+++ b/wifi/1.0/vts/functional/wifi_nan_iface_hidl_test.cpp
@@ -16,10 +16,12 @@
 
 #include <android-base/logging.h>
 
+#include <android/hardware/wifi/1.0/IWifi.h>
 #include <android/hardware/wifi/1.0/IWifiNanIface.h>
 #include <android/hardware/wifi/1.0/IWifiNanIfaceEventCallback.h>
-
-#include <VtsHalHidlTargetTestBase.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 #include <chrono>
 #include <condition_variable>
 #include <mutex>
@@ -29,27 +31,31 @@
 
 using namespace ::android::hardware::wifi::V1_0;
 
+using ::android::sp;
 using ::android::hardware::Return;
 using ::android::hardware::Void;
-using ::android::sp;
+using ::android::hardware::wifi::V1_0::IWifi;
 
 #define TIMEOUT_PERIOD 10
 
 /**
  * Fixture to use for all NAN Iface HIDL interface tests.
  */
-class WifiNanIfaceHidlTest : public ::testing::VtsHalHidlTargetTestBase {
-  public:
+class WifiNanIfaceHidlTest : public ::testing::TestWithParam<std::string> {
+   public:
     virtual void SetUp() override {
-      iwifiNanIface = getWifiNanIface();
-      ASSERT_NE(nullptr, iwifiNanIface.get());
-      ASSERT_EQ(WifiStatusCode::SUCCESS, HIDL_INVOKE(iwifiNanIface, registerEventCallback,
-            new WifiNanIfaceEventCallback(*this)).code);
+        // Make sure test starts with a clean state
+        stopWifi(GetInstanceName());
+
+        iwifiNanIface = getWifiNanIface(GetInstanceName());
+        ASSERT_NE(nullptr, iwifiNanIface.get());
+        ASSERT_EQ(WifiStatusCode::SUCCESS,
+                  HIDL_INVOKE(iwifiNanIface, registerEventCallback,
+                              new WifiNanIfaceEventCallback(*this))
+                      .code);
     }
 
-    virtual void TearDown() override {
-      stopWifi();
-    }
+    virtual void TearDown() override { stopWifi(GetInstanceName()); }
 
     /* Used as a mechanism to inform the test about data/event callback */
     inline void notify() {
@@ -438,6 +444,8 @@
       NanFollowupReceivedInd nanFollowupReceivedInd;
       NanDataPathRequestInd nanDataPathRequestInd;
       NanDataPathConfirmInd nanDataPathConfirmInd;
+
+      std::string GetInstanceName() { return GetParam(); }
 };
 
 /*
@@ -445,9 +453,8 @@
  * Ensures that an instance of the IWifiNanIface proxy object is
  * successfully created.
  */
-TEST(WifiNanIfaceHidlTestNoFixture, Create) {
-  ASSERT_NE(nullptr, getWifiNanIface().get());
-  stopWifi();
+TEST_P(WifiNanIfaceHidlTest, Create) {
+    // The creation of a proxy object is tested as part of SetUp method.
 }
 
 /*
@@ -455,41 +462,51 @@
  * Ensure that API calls fail with ERROR_WIFI_IFACE_INVALID when using an interface once wifi
  * is disabled.
  */
-TEST(WifiNanIfaceHidlTestNoFixture, FailOnIfaceInvalid) {
-  android::sp<IWifiNanIface> iwifiNanIface = getWifiNanIface();
-  ASSERT_NE(nullptr, iwifiNanIface.get());
-  stopWifi();
-  sleep(5); // make sure that all chips/interfaces are invalidated
-  ASSERT_EQ(WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-          HIDL_INVOKE(iwifiNanIface, getCapabilitiesRequest, 0).code);
+TEST_P(WifiNanIfaceHidlTest, FailOnIfaceInvalid) {
+    stopWifi(GetInstanceName());
+    android::sp<IWifiNanIface> iwifiNanIface =
+        getWifiNanIface(GetInstanceName());
+    ASSERT_NE(nullptr, iwifiNanIface.get());
+    stopWifi(GetInstanceName());
+    sleep(5);  // make sure that all chips/interfaces are invalidated
+    ASSERT_EQ(WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+              HIDL_INVOKE(iwifiNanIface, getCapabilitiesRequest, 0).code);
 }
 
 /*
  * getCapabilitiesRequest: validate that returns capabilities.
  */
-TEST_F(WifiNanIfaceHidlTest, getCapabilitiesRequest) {
-  uint16_t inputCmdId = 10;
-  callbackType = INVALID;
-  ASSERT_EQ(WifiStatusCode::SUCCESS,
+TEST_P(WifiNanIfaceHidlTest, getCapabilitiesRequest) {
+    uint16_t inputCmdId = 10;
+    callbackType = INVALID;
+    ASSERT_EQ(
+        WifiStatusCode::SUCCESS,
         HIDL_INVOKE(iwifiNanIface, getCapabilitiesRequest, inputCmdId).code);
-  // wait for a callback
-  ASSERT_EQ(std::cv_status::no_timeout, wait(NOTIFY_CAPABILITIES_RESPONSE));
-  ASSERT_EQ(NOTIFY_CAPABILITIES_RESPONSE, callbackType);
-  ASSERT_EQ(id, inputCmdId);
+    // wait for a callback
+    ASSERT_EQ(std::cv_status::no_timeout, wait(NOTIFY_CAPABILITIES_RESPONSE));
+    ASSERT_EQ(NOTIFY_CAPABILITIES_RESPONSE, callbackType);
+    ASSERT_EQ(id, inputCmdId);
 
-  // check for reasonable capability values
-  EXPECT_GT(capabilities.maxConcurrentClusters, (unsigned int) 0);
-  EXPECT_GT(capabilities.maxPublishes, (unsigned int) 0);
-  EXPECT_GT(capabilities.maxSubscribes, (unsigned int) 0);
-  EXPECT_EQ(capabilities.maxServiceNameLen, (unsigned int) 255);
-  EXPECT_EQ(capabilities.maxMatchFilterLen, (unsigned int) 255);
-  EXPECT_GT(capabilities.maxTotalMatchFilterLen, (unsigned int) 255);
-  EXPECT_EQ(capabilities.maxServiceSpecificInfoLen, (unsigned int) 255);
-  EXPECT_GE(capabilities.maxExtendedServiceSpecificInfoLen, (unsigned int) 255);
-  EXPECT_GT(capabilities.maxNdiInterfaces, (unsigned int) 0);
-  EXPECT_GT(capabilities.maxNdpSessions, (unsigned int) 0);
-  EXPECT_GT(capabilities.maxAppInfoLen, (unsigned int) 0);
-  EXPECT_GT(capabilities.maxQueuedTransmitFollowupMsgs, (unsigned int) 0);
-  EXPECT_GT(capabilities.maxSubscribeInterfaceAddresses, (unsigned int) 0);
-  EXPECT_NE(capabilities.supportedCipherSuites, (unsigned int) 0);
+    // check for reasonable capability values
+    EXPECT_GT(capabilities.maxConcurrentClusters, (unsigned int)0);
+    EXPECT_GT(capabilities.maxPublishes, (unsigned int)0);
+    EXPECT_GT(capabilities.maxSubscribes, (unsigned int)0);
+    EXPECT_EQ(capabilities.maxServiceNameLen, (unsigned int)255);
+    EXPECT_EQ(capabilities.maxMatchFilterLen, (unsigned int)255);
+    EXPECT_GT(capabilities.maxTotalMatchFilterLen, (unsigned int)255);
+    EXPECT_EQ(capabilities.maxServiceSpecificInfoLen, (unsigned int)255);
+    EXPECT_GE(capabilities.maxExtendedServiceSpecificInfoLen,
+              (unsigned int)255);
+    EXPECT_GT(capabilities.maxNdiInterfaces, (unsigned int)0);
+    EXPECT_GT(capabilities.maxNdpSessions, (unsigned int)0);
+    EXPECT_GT(capabilities.maxAppInfoLen, (unsigned int)0);
+    EXPECT_GT(capabilities.maxQueuedTransmitFollowupMsgs, (unsigned int)0);
+    EXPECT_GT(capabilities.maxSubscribeInterfaceAddresses, (unsigned int)0);
+    EXPECT_NE(capabilities.supportedCipherSuites, (unsigned int)0);
 }
+
+INSTANTIATE_TEST_SUITE_P(
+    PerInstance, WifiNanIfaceHidlTest,
+    testing::ValuesIn(
+        android::hardware::getAllHalInstanceNames(IWifi::descriptor)),
+    android::hardware::PrintInstanceNameToString);
diff --git a/wifi/1.0/vts/functional/wifi_p2p_iface_hidl_test.cpp b/wifi/1.0/vts/functional/wifi_p2p_iface_hidl_test.cpp
index 269eb6c..fd175f5 100644
--- a/wifi/1.0/vts/functional/wifi_p2p_iface_hidl_test.cpp
+++ b/wifi/1.0/vts/functional/wifi_p2p_iface_hidl_test.cpp
@@ -16,25 +16,32 @@
 
 #include <android-base/logging.h>
 
+#include <android/hardware/wifi/1.0/IWifi.h>
 #include <android/hardware/wifi/1.0/IWifiP2pIface.h>
-
-#include <VtsHalHidlTargetTestBase.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 
 #include "wifi_hidl_test_utils.h"
 
-using ::android::hardware::wifi::V1_0::IWifiP2pIface;
 using ::android::sp;
+using ::android::hardware::wifi::V1_0::IWifi;
+using ::android::hardware::wifi::V1_0::IWifiP2pIface;
 
 /**
  * Fixture to use for all P2P Iface HIDL interface tests.
  */
-class WifiP2pIfaceHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+class WifiP2pIfaceHidlTest : public ::testing::TestWithParam<std::string> {
    public:
-    virtual void SetUp() override {}
+    virtual void SetUp() override {
+        // Make sure test starts with a clean state
+        stopWifi(GetInstanceName());
+    }
 
-    virtual void TearDown() override { stopWifi(); }
+    virtual void TearDown() override { stopWifi(GetInstanceName()); }
 
    protected:
+    std::string GetInstanceName() { return GetParam(); }
 };
 
 /*
@@ -42,7 +49,13 @@
  * Ensures that an instance of the IWifiP2pIface proxy object is
  * successfully created.
  */
-TEST(WifiP2pIfaceHidlTestNoFixture, Create) {
-    EXPECT_NE(nullptr, getWifiP2pIface().get());
-    stopWifi();
+TEST_P(WifiP2pIfaceHidlTest, Create) {
+    stopWifi(GetInstanceName());
+    EXPECT_NE(nullptr, getWifiP2pIface(GetInstanceName()).get());
 }
+
+INSTANTIATE_TEST_SUITE_P(
+    PerInstance, WifiP2pIfaceHidlTest,
+    testing::ValuesIn(
+        android::hardware::getAllHalInstanceNames(IWifi::descriptor)),
+    android::hardware::PrintInstanceNameToString);
diff --git a/wifi/1.0/vts/functional/wifi_rtt_controller_hidl_test.cpp b/wifi/1.0/vts/functional/wifi_rtt_controller_hidl_test.cpp
index e13086d..1eb9c99 100644
--- a/wifi/1.0/vts/functional/wifi_rtt_controller_hidl_test.cpp
+++ b/wifi/1.0/vts/functional/wifi_rtt_controller_hidl_test.cpp
@@ -16,25 +16,36 @@
 
 #include <android-base/logging.h>
 
+#include <android/hardware/wifi/1.0/IWifi.h>
 #include <android/hardware/wifi/1.0/IWifiRttController.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 
-#include <VtsHalHidlTargetTestBase.h>
-
+#include "wifi_hidl_call_util.h"
 #include "wifi_hidl_test_utils.h"
 
-using ::android::hardware::wifi::V1_0::IWifiRttController;
 using ::android::sp;
+using ::android::hardware::wifi::V1_0::IWifi;
+using ::android::hardware::wifi::V1_0::IWifiChip;
+using ::android::hardware::wifi::V1_0::IWifiRttController;
+using ::android::hardware::wifi::V1_0::IWifiStaIface;
+using ::android::hardware::wifi::V1_0::WifiStatusCode;
 
 /**
  * Fixture to use for all RTT controller HIDL interface tests.
  */
-class WifiRttControllerHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+class WifiRttControllerHidlTest : public ::testing::TestWithParam<std::string> {
    public:
-    virtual void SetUp() override {}
+    virtual void SetUp() override {
+        // Make sure test starts with a clean state
+        stopWifi(GetInstanceName());
+    }
 
-    virtual void TearDown() override { stopWifi(); }
+    virtual void TearDown() override { stopWifi(GetInstanceName()); }
 
    protected:
+    std::string GetInstanceName() { return GetParam(); }
 };
 
 /*
@@ -42,7 +53,28 @@
  * Ensures that an instance of the IWifiRttController proxy object is
  * successfully created.
  */
-TEST(WifiRttControllerHidlTestNoFixture, Create) {
-    EXPECT_NE(nullptr, getWifiRttController().get());
-    stopWifi();
+TEST_P(WifiRttControllerHidlTest, Create) {
+    stopWifi(GetInstanceName());
+
+    const std::string& instance_name = GetInstanceName();
+
+    sp<IWifiChip> wifi_chip = getWifiChip(instance_name);
+    EXPECT_NE(nullptr, wifi_chip.get());
+
+    sp<IWifiStaIface> wifi_sta_iface = getWifiStaIface(instance_name);
+    EXPECT_NE(nullptr, wifi_sta_iface.get());
+
+    const auto& status_and_controller =
+        HIDL_INVOKE(wifi_chip, createRttController, wifi_sta_iface);
+    if (status_and_controller.first.code !=
+        WifiStatusCode::ERROR_NOT_SUPPORTED) {
+        EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_controller.first.code);
+        EXPECT_NE(nullptr, status_and_controller.second.get());
+    }
 }
+
+INSTANTIATE_TEST_SUITE_P(
+    PerInstance, WifiRttControllerHidlTest,
+    testing::ValuesIn(
+        android::hardware::getAllHalInstanceNames(IWifi::descriptor)),
+    android::hardware::PrintInstanceNameToString);
diff --git a/wifi/1.0/vts/functional/wifi_sta_iface_hidl_test.cpp b/wifi/1.0/vts/functional/wifi_sta_iface_hidl_test.cpp
index a413863..7db0526 100644
--- a/wifi/1.0/vts/functional/wifi_sta_iface_hidl_test.cpp
+++ b/wifi/1.0/vts/functional/wifi_sta_iface_hidl_test.cpp
@@ -16,10 +16,12 @@
 
 #include <android-base/logging.h>
 
+#include <android/hardware/wifi/1.0/IWifi.h>
 #include <android/hardware/wifi/1.0/IWifiStaIface.h>
 #include <android/hardware/wifi/1.3/IWifiStaIface.h>
-
-#include <VtsHalHidlTargetTestBase.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 
 #include "wifi_hidl_call_util.h"
 #include "wifi_hidl_test_utils.h"
@@ -28,6 +30,7 @@
 using ::android::hardware::wifi::V1_0::Bssid;
 using ::android::hardware::wifi::V1_0::CommandId;
 using ::android::hardware::wifi::V1_0::IfaceType;
+using ::android::hardware::wifi::V1_0::IWifi;
 using ::android::hardware::wifi::V1_0::IWifiStaIface;
 using ::android::hardware::wifi::V1_0::Rssi;
 using ::android::hardware::wifi::V1_0::Ssid;
@@ -41,14 +44,17 @@
 /**
  * Fixture to use for all STA Iface HIDL interface tests.
  */
-class WifiStaIfaceHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+class WifiStaIfaceHidlTest : public ::testing::TestWithParam<std::string> {
    public:
     virtual void SetUp() override {
-        wifi_sta_iface_ = getWifiStaIface();
+        // Make sure test starts with a clean state
+        stopWifi(GetInstanceName());
+
+        wifi_sta_iface_ = getWifiStaIface(GetInstanceName());
         ASSERT_NE(nullptr, wifi_sta_iface_.get());
     }
 
-    virtual void TearDown() override { stopWifi(); }
+    virtual void TearDown() override { stopWifi(GetInstanceName()); }
 
    protected:
     bool isCapabilitySupported(IWifiStaIface::StaIfaceCapabilityMask cap_mask) {
@@ -59,6 +65,7 @@
     }
 
     sp<IWifiStaIface> wifi_sta_iface_;
+    std::string GetInstanceName() { return GetParam(); }
 };
 
 /*
@@ -66,15 +73,14 @@
  * Ensures that an instance of the IWifiStaIface proxy object is
  * successfully created.
  */
-TEST(WifiStaIfaceHidlTestNoFixture, Create) {
-    EXPECT_NE(nullptr, getWifiStaIface().get());
-    stopWifi();
+TEST_P(WifiStaIfaceHidlTest, Create) {
+    // The creation of a proxy object is tested as part of SetUp method.
 }
 
 /*
  * GetCapabilities:
  */
-TEST_F(WifiStaIfaceHidlTest, GetCapabilities) {
+TEST_P(WifiStaIfaceHidlTest, GetCapabilities) {
     const auto& status_and_caps = HIDL_INVOKE(wifi_sta_iface_, getCapabilities);
     EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_caps.first.code);
     EXPECT_GT(status_and_caps.second, 0u);
@@ -84,7 +90,7 @@
  * GetType:
  * Ensures that the correct interface type is returned for station interface.
  */
-TEST_F(WifiStaIfaceHidlTest, GetType) {
+TEST_P(WifiStaIfaceHidlTest, GetType) {
     const auto& status_and_type = HIDL_INVOKE(wifi_sta_iface_, getType);
     EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_type.first.code);
     EXPECT_EQ(IfaceType::STA, status_and_type.second);
@@ -94,7 +100,7 @@
  * GetApfPacketFilterCapabilities:
  * Ensures that we can retrieve APF packet filter capabilites.
  */
-TEST_F(WifiStaIfaceHidlTest, GetApfPacketFilterCapabilities) {
+TEST_P(WifiStaIfaceHidlTest, GetApfPacketFilterCapabilities) {
     if (!isCapabilitySupported(IWifiStaIface::StaIfaceCapabilityMask::APF)) {
         // No-op if APF packet filer is not supported.
         return;
@@ -109,7 +115,7 @@
  * GetBackgroundScanCapabilities:
  * Ensures that we can retrieve background scan capabilities.
  */
-TEST_F(WifiStaIfaceHidlTest, GetBackgroundScanCapabilities) {
+TEST_P(WifiStaIfaceHidlTest, GetBackgroundScanCapabilities) {
     if (!isCapabilitySupported(
             IWifiStaIface::StaIfaceCapabilityMask::BACKGROUND_SCAN)) {
         // No-op if background scan is not supported.
@@ -125,7 +131,7 @@
  * GetValidFrequenciesForBand:
  * Ensures that we can retrieve valid frequencies for 2.4 GHz band.
  */
-TEST_F(WifiStaIfaceHidlTest, GetValidFrequenciesForBand) {
+TEST_P(WifiStaIfaceHidlTest, GetValidFrequenciesForBand) {
     const auto& status_and_freqs = HIDL_INVOKE(
         wifi_sta_iface_, getValidFrequenciesForBand, WifiBand::BAND_24GHZ);
     EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_freqs.first.code);
@@ -137,7 +143,7 @@
  * Ensures that calls to enable, disable, and retrieve link layer stats
  * will return a success status code.
  */
-TEST_F(WifiStaIfaceHidlTest, LinkLayerStatsCollection) {
+TEST_P(WifiStaIfaceHidlTest, LinkLayerStatsCollection) {
     if (!isCapabilitySupported(
             IWifiStaIface::StaIfaceCapabilityMask::LINK_LAYER_STATS)) {
         // No-op if link layer stats is not supported.
@@ -172,7 +178,7 @@
  * Ensures that calls to disable RSSI monitoring will return an error status
  * code if RSSI monitoring is not enabled.
  */
-TEST_F(WifiStaIfaceHidlTest, RSSIMonitoring) {
+TEST_P(WifiStaIfaceHidlTest, RSSIMonitoring) {
     if (!isCapabilitySupported(
             IWifiStaIface::StaIfaceCapabilityMask::RSSI_MONITOR)) {
         // No-op if RSSI monitor is not supported.
@@ -197,7 +203,7 @@
  * Ensures that calls to configure and enable roaming will return a success
  * status code.
  */
-TEST_F(WifiStaIfaceHidlTest, RoamingControl) {
+TEST_P(WifiStaIfaceHidlTest, RoamingControl) {
     if (!isCapabilitySupported(
             IWifiStaIface::StaIfaceCapabilityMask::CONTROL_ROAMING)) {
         // No-op if roaming control is not supported.
@@ -242,9 +248,9 @@
  * Ensures that calls to enable neighbor discovery offload will return a success
  * status code.
  */
-TEST_F(WifiStaIfaceHidlTest, EnableNDOffload) {
-   if (!isCapabilitySupported(
-           IWifiStaIface::StaIfaceCapabilityMask::ND_OFFLOAD)) {
+TEST_P(WifiStaIfaceHidlTest, EnableNDOffload) {
+    if (!isCapabilitySupported(
+            IWifiStaIface::StaIfaceCapabilityMask::ND_OFFLOAD)) {
         // No-op if nd offload is not supported.
         return;
     }
@@ -257,7 +263,7 @@
  * Ensures that calls to set scanning MAC OUI will return a success status
  * code.
  */
-TEST_F(WifiStaIfaceHidlTest, SetScanningMacOui) {
+TEST_P(WifiStaIfaceHidlTest, SetScanningMacOui) {
     if (!isCapabilitySupported(
             IWifiStaIface::StaIfaceCapabilityMask::SCAN_RAND)) {
         // No-op if SetScanningMacOui is not supported.
@@ -274,9 +280,9 @@
  * Ensures that calls to start packet fate monitoring and retrieve TX/RX
  * packets will return a success status code.
  */
-TEST_F(WifiStaIfaceHidlTest, PacketFateMonitoring) {
-   if (!isCapabilitySupported(
-           IWifiStaIface::StaIfaceCapabilityMask::DEBUG_PACKET_FATE)) {
+TEST_P(WifiStaIfaceHidlTest, PacketFateMonitoring) {
+    if (!isCapabilitySupported(
+            IWifiStaIface::StaIfaceCapabilityMask::DEBUG_PACKET_FATE)) {
         // No-op if packet fate monitor is not supported.
         return;
     }
@@ -291,3 +297,9 @@
     EXPECT_EQ(WifiStatusCode::SUCCESS,
               HIDL_INVOKE(wifi_sta_iface_, getDebugRxPacketFates).first.code);
 }
+
+INSTANTIATE_TEST_SUITE_P(
+    PerInstance, WifiStaIfaceHidlTest,
+    testing::ValuesIn(
+        android::hardware::getAllHalInstanceNames(IWifi::descriptor)),
+    android::hardware::PrintInstanceNameToString);
diff --git a/wifi/1.1/vts/functional/Android.bp b/wifi/1.1/vts/functional/Android.bp
index 6d7635d..775031e 100644
--- a/wifi/1.1/vts/functional/Android.bp
+++ b/wifi/1.1/vts/functional/Android.bp
@@ -28,5 +28,5 @@
         "android.hardware.wifi@1.3",
         "libwifi-system-iface"
     ],
-    test_suites: ["general-tests"],
+    test_suites: ["general-tests", "vts-core"],
 }
diff --git a/wifi/1.1/vts/functional/VtsHalWifiV1_1TargetTest.cpp b/wifi/1.1/vts/functional/VtsHalWifiV1_1TargetTest.cpp
index a0f97f8..4b62b15 100644
--- a/wifi/1.1/vts/functional/VtsHalWifiV1_1TargetTest.cpp
+++ b/wifi/1.1/vts/functional/VtsHalWifiV1_1TargetTest.cpp
@@ -14,37 +14,8 @@
  * limitations under the License.
  */
 
-#include <android-base/logging.h>
-#include <android/hardware/wifi/1.1/IWifi.h>
+#include <VtsHalHidlTargetTestEnvBase.h>
 
-#include "wifi_hidl_test_utils.h"
-
-class WifiHidlEnvironment_1_1 : public WifiHidlEnvironment {
-   public:
-    // get the test environment singleton
-    static WifiHidlEnvironment_1_1* Instance() {
-        static WifiHidlEnvironment_1_1* instance = new WifiHidlEnvironment_1_1;
-        return instance;
-    }
-
-    virtual void registerTestServices() override {
-        registerTestService<android::hardware::wifi::V1_1::IWifi>();
-    }
-
-   private:
-    WifiHidlEnvironment_1_1() {}
-};
-
-WifiHidlEnvironment* gEnv = WifiHidlEnvironment_1_1::Instance();
-
-int main(int argc, char** argv) {
-    ::testing::AddGlobalTestEnvironment(gEnv);
-    ::testing::InitGoogleTest(&argc, argv);
-    gEnv->init(&argc, argv);
-    int status = gEnv->initFromOptions(argc, argv);
-    if (status == 0) {
-        int status = RUN_ALL_TESTS();
-        LOG(INFO) << "Test result = " << status;
-    }
-    return status;
-}
+// TODO(b/143892896): Remove this file after wifi_hidl_test_utils.cpp is
+// updated.
+::testing::VtsHalHidlTargetTestEnvBase* gEnv = nullptr;
diff --git a/wifi/1.1/vts/functional/wifi_chip_hidl_test.cpp b/wifi/1.1/vts/functional/wifi_chip_hidl_test.cpp
index 6323547..4b94acb 100644
--- a/wifi/1.1/vts/functional/wifi_chip_hidl_test.cpp
+++ b/wifi/1.1/vts/functional/wifi_chip_hidl_test.cpp
@@ -19,8 +19,9 @@
 #include <android/hardware/wifi/1.1/IWifi.h>
 #include <android/hardware/wifi/1.1/IWifiChip.h>
 #include <android/hardware/wifi/1.3/IWifiChip.h>
-
-#include <VtsHalHidlTargetTestBase.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 
 #include "wifi_hidl_call_util.h"
 #include "wifi_hidl_test_utils.h"
@@ -45,14 +46,17 @@
 /**
  * Fixture to use for all Wifi chip HIDL interface tests.
  */
-class WifiChipHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+class WifiChipHidlTest : public ::testing::TestWithParam<std::string> {
    public:
     virtual void SetUp() override {
-        wifi_chip_ = IWifiChip::castFrom(getWifiChip());
+        // Make sure to start with a clean state
+        stopWifi(GetInstanceName());
+
+        wifi_chip_ = IWifiChip::castFrom(getWifiChip(GetInstanceName()));
         ASSERT_NE(nullptr, wifi_chip_.get());
     }
 
-    virtual void TearDown() override { stopWifi(); }
+    virtual void TearDown() override { stopWifi(GetInstanceName()); }
 
    protected:
     uint32_t configureChipForStaIfaceAndGetCapabilities() {
@@ -77,12 +81,15 @@
     }
 
     sp<IWifiChip> wifi_chip_;
+
+   private:
+    std::string GetInstanceName() { return GetParam(); }
 };
 
 /*
  * SelectTxPowerScenario
  */
-TEST_F(WifiChipHidlTest, SelectTxPowerScenario) {
+TEST_P(WifiChipHidlTest, SelectTxPowerScenario) {
     uint32_t caps = configureChipForStaIfaceAndGetCapabilities();
     const auto& status =
         HIDL_INVOKE(wifi_chip_, selectTxPowerScenario, kFakePowerScenario);
@@ -96,7 +103,7 @@
 /*
  * ResetTxPowerScenario
  */
-TEST_F(WifiChipHidlTest, ResetTxPowerScenario) {
+TEST_P(WifiChipHidlTest, ResetTxPowerScenario) {
     uint32_t caps = configureChipForStaIfaceAndGetCapabilities();
     const auto& status =
         HIDL_INVOKE(wifi_chip_, resetTxPowerScenario);
@@ -106,3 +113,9 @@
         EXPECT_EQ(WifiStatusCode::ERROR_NOT_SUPPORTED, status.code);
     }
 }
+
+INSTANTIATE_TEST_SUITE_P(
+    PerInstance, WifiChipHidlTest,
+    testing::ValuesIn(
+        android::hardware::getAllHalInstanceNames(IWifi::descriptor)),
+    android::hardware::PrintInstanceNameToString);
diff --git a/wifi/1.2/vts/functional/Android.bp b/wifi/1.2/vts/functional/Android.bp
index 97853d0..f43e49e 100644
--- a/wifi/1.2/vts/functional/Android.bp
+++ b/wifi/1.2/vts/functional/Android.bp
@@ -30,7 +30,8 @@
         "android.hardware.wifi@1.3",
         "libwifi-system-iface"
     ],
-    test_suites: ["general-tests"],
+    disable_framework: true,
+    test_suites: ["general-tests", "vts-core"],
 }
 
 cc_test {
@@ -47,5 +48,6 @@
         "android.hardware.wifi@1.2",
         "libwifi-system-iface"
     ],
-    test_suites: ["general-tests"],
+    disable_framework: true,
+    test_suites: ["general-tests", "vts-core"],
 }
diff --git a/wifi/1.2/vts/functional/VtsHalWifiV1_2TargetTest.cpp b/wifi/1.2/vts/functional/VtsHalWifiV1_2TargetTest.cpp
index c765cdc..52c7a4a 100644
--- a/wifi/1.2/vts/functional/VtsHalWifiV1_2TargetTest.cpp
+++ b/wifi/1.2/vts/functional/VtsHalWifiV1_2TargetTest.cpp
@@ -14,35 +14,8 @@
  * limitations under the License.
  */
 
-#include <android-base/logging.h>
-#include <android/hardware/wifi/1.2/IWifi.h>
+#include <VtsHalHidlTargetTestEnvBase.h>
 
-#include "wifi_hidl_test_utils.h"
-
-using ::android::hardware::wifi::V1_2::IWifi;
-
-// Test environment for Wifi HIDL HAL.
-class WifiHidlEnvironment_1_2 : public WifiHidlEnvironment {
-   public:
-    // get the test environment singleton
-    static WifiHidlEnvironment_1_2* Instance() {
-        static WifiHidlEnvironment_1_2* instance = new WifiHidlEnvironment_1_2;
-        return instance;
-    }
-
-    virtual void registerTestServices() override { registerTestService<IWifi>(); }
-
-   private:
-    WifiHidlEnvironment_1_2() {}
-};
-
-WifiHidlEnvironment_1_2* gEnv = WifiHidlEnvironment_1_2::Instance();
-
-int main(int argc, char** argv) {
-  ::testing::AddGlobalTestEnvironment(gEnv);
-  ::testing::InitGoogleTest(&argc, argv);
-  gEnv->init(&argc, argv);
-  int status = RUN_ALL_TESTS();
-  LOG(INFO) << "Test result = " << status;
-  return status;
-}
+// TODO(b/143892896): Remove this file after wifi_hidl_test_utils.cpp is
+// updated.
+::testing::VtsHalHidlTargetTestEnvBase* gEnv = nullptr;
\ No newline at end of file
diff --git a/wifi/1.2/vts/functional/wifi_chip_hidl_test.cpp b/wifi/1.2/vts/functional/wifi_chip_hidl_test.cpp
index 9d567fe..b04acad 100644
--- a/wifi/1.2/vts/functional/wifi_chip_hidl_test.cpp
+++ b/wifi/1.2/vts/functional/wifi_chip_hidl_test.cpp
@@ -16,12 +16,14 @@
 
 #include <android-base/logging.h>
 
+#include <android/hardware/wifi/1.2/IWifi.h>
 #include <android/hardware/wifi/1.2/IWifiChip.h>
 #include <android/hardware/wifi/1.2/IWifiChipEventCallback.h>
 #include <android/hardware/wifi/1.3/IWifiChip.h>
-
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 #include <VtsHalHidlTargetCallbackBase.h>
-#include <VtsHalHidlTargetTestBase.h>
 
 #include "wifi_hidl_call_util.h"
 #include "wifi_hidl_test_utils.h"
@@ -50,14 +52,17 @@
 /**
  * Fixture to use for all Wifi chip HIDL interface tests.
  */
-class WifiChipHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+class WifiChipHidlTest : public ::testing::TestWithParam<std::string> {
  public:
   virtual void SetUp() override {
-    wifi_chip_ = IWifiChip::castFrom(getWifiChip());
-    ASSERT_NE(nullptr, wifi_chip_.get());
+      // Make sure test starts with a clean state
+      stopWifi(GetInstanceName());
+
+      wifi_chip_ = IWifiChip::castFrom(getWifiChip(GetInstanceName()));
+      ASSERT_NE(nullptr, wifi_chip_.get());
   }
 
-  virtual void TearDown() override { stopWifi(); }
+  virtual void TearDown() override { stopWifi(GetInstanceName()); }
 
   // A simple test implementation of WifiChipEventCallback.
   class WifiChipEventCallback
@@ -123,6 +128,9 @@
   }
 
   sp<IWifiChip> wifi_chip_;
+
+ private:
+  std::string GetInstanceName() { return GetParam(); }
 };
 
 /*
@@ -130,7 +138,7 @@
  * This test case tests the selectTxPowerScenario_1_2() API with SAR scenarios
  * newly defined in 1.2
  */
-TEST_F(WifiChipHidlTest, SelectTxPowerScenario_1_2_body) {
+TEST_P(WifiChipHidlTest, SelectTxPowerScenario_1_2_body) {
   uint32_t caps = configureChipForStaIfaceAndGetCapabilities();
   const auto& status =
       HIDL_INVOKE(wifi_chip_, selectTxPowerScenario_1_2, kPowerScenarioBody);
@@ -147,7 +155,7 @@
  * This test case tests the selectTxPowerScenario_1_2() API with previously
  * defined SAR scenarios
  */
-TEST_F(WifiChipHidlTest, SelectTxPowerScenario_1_2_voiceCall) {
+TEST_P(WifiChipHidlTest, SelectTxPowerScenario_1_2_voiceCall) {
   uint32_t caps = configureChipForStaIfaceAndGetCapabilities();
   const auto& status =
       HIDL_INVOKE(wifi_chip_, selectTxPowerScenario_1_2, kPowerScenarioVoiceCall);
@@ -167,9 +175,19 @@
  * since event is triggered internally in the HAL implementation, and can not be
  * triggered from the test case
  */
-TEST_F(WifiChipHidlTest, registerEventCallback_1_2) {
+TEST_P(WifiChipHidlTest, registerEventCallback_1_2) {
     sp<WifiChipEventCallback> wifiChipEventCallback = new WifiChipEventCallback();
     const auto& status =
         HIDL_INVOKE(wifi_chip_, registerEventCallback_1_2, wifiChipEventCallback);
-    EXPECT_EQ(WifiStatusCode::SUCCESS, status.code);
+
+    if (status.code != WifiStatusCode::SUCCESS) {
+        EXPECT_EQ(WifiStatusCode::ERROR_NOT_SUPPORTED, status.code);
+        return;
+    }
 }
+
+INSTANTIATE_TEST_SUITE_P(
+    PerInstance, WifiChipHidlTest,
+    testing::ValuesIn(android::hardware::getAllHalInstanceNames(
+        ::android::hardware::wifi::V1_2::IWifi::descriptor)),
+    android::hardware::PrintInstanceNameToString);
diff --git a/wifi/1.2/vts/functional/wifi_nan_iface_hidl_test.cpp b/wifi/1.2/vts/functional/wifi_nan_iface_hidl_test.cpp
index 4dbc82b..6e55664 100644
--- a/wifi/1.2/vts/functional/wifi_nan_iface_hidl_test.cpp
+++ b/wifi/1.2/vts/functional/wifi_nan_iface_hidl_test.cpp
@@ -16,10 +16,12 @@
 
 #include <android-base/logging.h>
 
+#include <android/hardware/wifi/1.2/IWifi.h>
 #include <android/hardware/wifi/1.2/IWifiNanIface.h>
 #include <android/hardware/wifi/1.2/IWifiNanIfaceEventCallback.h>
-
-#include <VtsHalHidlTargetTestBase.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 #include <chrono>
 #include <condition_variable>
 #include <mutex>
@@ -36,19 +38,22 @@
 
 #define TIMEOUT_PERIOD 10
 
-android::sp<android::hardware::wifi::V1_2::IWifiNanIface>
-getWifiNanIface_1_2() {
+android::sp<android::hardware::wifi::V1_2::IWifiNanIface> getWifiNanIface_1_2(
+    const std::string& instance_name) {
     return android::hardware::wifi::V1_2::IWifiNanIface::castFrom(
-        getWifiNanIface());
+        getWifiNanIface(instance_name));
 }
 
 /**
  * Fixture to use for all NAN Iface HIDL interface tests.
  */
-class WifiNanIfaceHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+class WifiNanIfaceHidlTest : public ::testing::TestWithParam<std::string> {
    public:
     virtual void SetUp() override {
-        iwifiNanIface = getWifiNanIface_1_2();
+        // Make sure to start with a clean state
+        stopWifi(GetInstanceName());
+
+        iwifiNanIface = getWifiNanIface_1_2(GetInstanceName());
         ASSERT_NE(nullptr, iwifiNanIface.get());
         ASSERT_EQ(WifiStatusCode::SUCCESS,
                   HIDL_INVOKE(iwifiNanIface, registerEventCallback_1_2,
@@ -56,7 +61,7 @@
                       .code);
     }
 
-    virtual void TearDown() override { stopWifi(); }
+    virtual void TearDown() override { stopWifi(GetInstanceName()); }
 
     /* Used as a mechanism to inform the test about data/event callback */
     inline void notify() {
@@ -458,6 +463,8 @@
     ::android::hardware::wifi::V1_2::NanDataPathConfirmInd
         nanDataPathConfirmInd_1_2;
     NanDataPathScheduleUpdateInd nanDataPathScheduleUpdateInd;
+
+    std::string GetInstanceName() { return GetParam(); }
 };
 
 /*
@@ -465,76 +472,92 @@
  * Ensures that an instance of the IWifiNanIface proxy object is
  * successfully created.
  */
-TEST(WifiNanIfaceHidlTestNoFixture, Create) {
-    ASSERT_NE(nullptr, getWifiNanIface_1_2().get());
-    stopWifi();
+TEST_P(WifiNanIfaceHidlTest, Create) {
+    // The creation of a proxy object is tested as part of SetUp method.
 }
 
 /*
  * enableRequest_1_2InvalidArgs: validate that fails with invalid arguments
  */
-TEST_F(WifiNanIfaceHidlTest, enableRequest_1_2InvalidArgs) {
+TEST_P(WifiNanIfaceHidlTest, enableRequest_1_2InvalidArgs) {
     uint16_t inputCmdId = 10;
     callbackType = INVALID;
     NanEnableRequest nanEnableRequest = {};
     NanConfigRequestSupplemental nanConfigRequestSupp = {};
-    ASSERT_EQ(WifiStatusCode::SUCCESS,
-              HIDL_INVOKE(iwifiNanIface, enableRequest_1_2, inputCmdId,
-                          nanEnableRequest, nanConfigRequestSupp)
-                  .code);
-    // wait for a callback
-    ASSERT_EQ(std::cv_status::no_timeout, wait(NOTIFY_ENABLE_RESPONSE));
-    ASSERT_EQ(NOTIFY_ENABLE_RESPONSE, callbackType);
-    ASSERT_EQ(id, inputCmdId);
-    ASSERT_EQ(status.status, NanStatusType::INVALID_ARGS);
+    const auto& halStatus =
+        HIDL_INVOKE(iwifiNanIface, enableRequest_1_2, inputCmdId,
+                    nanEnableRequest, nanConfigRequestSupp);
+    if (halStatus.code != WifiStatusCode::ERROR_NOT_SUPPORTED) {
+        ASSERT_EQ(WifiStatusCode::SUCCESS, halStatus.code);
+
+        // wait for a callback
+        ASSERT_EQ(std::cv_status::no_timeout, wait(NOTIFY_ENABLE_RESPONSE));
+        ASSERT_EQ(NOTIFY_ENABLE_RESPONSE, callbackType);
+        ASSERT_EQ(id, inputCmdId);
+        ASSERT_EQ(status.status, NanStatusType::INVALID_ARGS);
+    }
 }
 
 /*
  * enableRequest_1_2ShimInvalidArgs: validate that fails with invalid arguments
  * to the shim
  */
-TEST_F(WifiNanIfaceHidlTest, enableRequest_1_2ShimInvalidArgs) {
+TEST_P(WifiNanIfaceHidlTest, enableRequest_1_2ShimInvalidArgs) {
     uint16_t inputCmdId = 10;
     NanEnableRequest nanEnableRequest = {};
     nanEnableRequest.configParams.numberOfPublishServiceIdsInBeacon =
         128;  // must be <= 127
     NanConfigRequestSupplemental nanConfigRequestSupp = {};
-    ASSERT_EQ(WifiStatusCode::ERROR_INVALID_ARGS,
-              HIDL_INVOKE(iwifiNanIface, enableRequest_1_2, inputCmdId,
-                          nanEnableRequest, nanConfigRequestSupp)
-                  .code);
+    const auto& halStatus =
+        HIDL_INVOKE(iwifiNanIface, enableRequest_1_2, inputCmdId,
+                    nanEnableRequest, nanConfigRequestSupp);
+    if (halStatus.code != WifiStatusCode::ERROR_NOT_SUPPORTED) {
+        ASSERT_EQ(WifiStatusCode::ERROR_INVALID_ARGS, halStatus.code);
+    }
 }
 
 /*
  * configRequest_1_2InvalidArgs: validate that fails with invalid arguments
  */
-TEST_F(WifiNanIfaceHidlTest, configRequest_1_2InvalidArgs) {
+TEST_P(WifiNanIfaceHidlTest, configRequest_1_2InvalidArgs) {
     uint16_t inputCmdId = 10;
     callbackType = INVALID;
     NanConfigRequest nanConfigRequest = {};
     NanConfigRequestSupplemental nanConfigRequestSupp = {};
-    ASSERT_EQ(WifiStatusCode::SUCCESS,
-              HIDL_INVOKE(iwifiNanIface, configRequest_1_2, inputCmdId,
-                          nanConfigRequest, nanConfigRequestSupp)
-                  .code);
-    // wait for a callback
-    ASSERT_EQ(std::cv_status::no_timeout, wait(NOTIFY_CONFIG_RESPONSE));
-    ASSERT_EQ(NOTIFY_CONFIG_RESPONSE, callbackType);
-    ASSERT_EQ(id, inputCmdId);
-    ASSERT_EQ(status.status, NanStatusType::INVALID_ARGS);
+    const auto& halStatus =
+        HIDL_INVOKE(iwifiNanIface, configRequest_1_2, inputCmdId,
+                    nanConfigRequest, nanConfigRequestSupp);
+
+    if (halStatus.code != WifiStatusCode::ERROR_NOT_SUPPORTED) {
+        ASSERT_EQ(WifiStatusCode::SUCCESS, halStatus.code);
+
+        // wait for a callback
+        ASSERT_EQ(std::cv_status::no_timeout, wait(NOTIFY_CONFIG_RESPONSE));
+        ASSERT_EQ(NOTIFY_CONFIG_RESPONSE, callbackType);
+        ASSERT_EQ(id, inputCmdId);
+        ASSERT_EQ(status.status, NanStatusType::INVALID_ARGS);
+    }
 }
 
 /*
  * configRequest_1_2ShimInvalidArgs: validate that fails with invalid arguments
  * to the shim
  */
-TEST_F(WifiNanIfaceHidlTest, configRequest_1_2ShimInvalidArgs) {
+TEST_P(WifiNanIfaceHidlTest, configRequest_1_2ShimInvalidArgs) {
     uint16_t inputCmdId = 10;
     NanConfigRequest nanConfigRequest = {};
     nanConfigRequest.numberOfPublishServiceIdsInBeacon = 128;  // must be <= 127
     NanConfigRequestSupplemental nanConfigRequestSupp = {};
-    ASSERT_EQ(WifiStatusCode::ERROR_INVALID_ARGS,
-              HIDL_INVOKE(iwifiNanIface, configRequest_1_2, inputCmdId,
-                          nanConfigRequest, nanConfigRequestSupp)
-                  .code);
+    const auto& halStatus =
+        HIDL_INVOKE(iwifiNanIface, configRequest_1_2, inputCmdId,
+                    nanConfigRequest, nanConfigRequestSupp);
+    if (halStatus.code != WifiStatusCode::ERROR_NOT_SUPPORTED) {
+        ASSERT_EQ(WifiStatusCode::ERROR_INVALID_ARGS, halStatus.code);
+    }
 }
+
+INSTANTIATE_TEST_SUITE_P(
+    PerInstance, WifiNanIfaceHidlTest,
+    testing::ValuesIn(android::hardware::getAllHalInstanceNames(
+        ::android::hardware::wifi::V1_2::IWifi::descriptor)),
+    android::hardware::PrintInstanceNameToString);
diff --git a/wifi/1.2/vts/functional/wifi_sta_iface_hidl_test.cpp b/wifi/1.2/vts/functional/wifi_sta_iface_hidl_test.cpp
index 92f5d14..066dcaa 100644
--- a/wifi/1.2/vts/functional/wifi_sta_iface_hidl_test.cpp
+++ b/wifi/1.2/vts/functional/wifi_sta_iface_hidl_test.cpp
@@ -19,9 +19,11 @@
 
 #include <android-base/logging.h>
 
+#include <android/hardware/wifi/1.2/IWifi.h>
 #include <android/hardware/wifi/1.2/IWifiStaIface.h>
-
-#include <VtsHalHidlTargetTestBase.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 
 #include "wifi_hidl_call_util.h"
 #include "wifi_hidl_test_utils.h"
@@ -34,14 +36,18 @@
 /**
  * Fixture to use for all STA Iface HIDL interface tests.
  */
-class WifiStaIfaceHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+class WifiStaIfaceHidlTest : public ::testing::TestWithParam<std::string> {
    public:
     virtual void SetUp() override {
-        wifi_sta_iface_ = IWifiStaIface::castFrom(getWifiStaIface());
+        // Make sure to start with a clean state
+        stopWifi(GetInstanceName());
+
+        wifi_sta_iface_ =
+            IWifiStaIface::castFrom(getWifiStaIface(GetInstanceName()));
         ASSERT_NE(nullptr, wifi_sta_iface_.get());
     }
 
-    virtual void TearDown() override { stopWifi(); }
+    virtual void TearDown() override { stopWifi(GetInstanceName()); }
 
    protected:
     bool isCapabilitySupported(IWifiStaIface::StaIfaceCapabilityMask cap_mask) {
@@ -52,6 +58,9 @@
     }
 
     sp<IWifiStaIface> wifi_sta_iface_;
+
+   private:
+    std::string GetInstanceName() { return GetParam(); }
 };
 
 /*
@@ -59,7 +68,7 @@
  * Ensures that calls to set MAC address will return a success status
  * code.
  */
-TEST_F(WifiStaIfaceHidlTest, SetMacAddress) {
+TEST_P(WifiStaIfaceHidlTest, SetMacAddress) {
     const android::hardware::hidl_array<uint8_t, 6> kMac{
         std::array<uint8_t, 6>{{0x12, 0x22, 0x33, 0x52, 0x10, 0x41}}};
     EXPECT_EQ(WifiStatusCode::SUCCESS,
@@ -76,7 +85,7 @@
  * TODO: We can't execute APF opcodes from this test because there's no way
  * to loop test packets through the wifi firmware (b/73804303#comment29).
  */
-TEST_F(WifiStaIfaceHidlTest, DISABLED_ReadApfPacketFilterData) {
+TEST_P(WifiStaIfaceHidlTest, DISABLED_ReadApfPacketFilterData) {
     if (!isCapabilitySupported(IWifiStaIface::StaIfaceCapabilityMask::APF)) {
         // Disable test if APF packet filer is not supported.
         LOG(WARNING) << "TEST SKIPPED: APF packet filtering not supported";
@@ -107,3 +116,9 @@
 
     EXPECT_EQ(status_and_data.second, data);
 }
+
+INSTANTIATE_TEST_SUITE_P(
+    PerInstance, WifiStaIfaceHidlTest,
+    testing::ValuesIn(android::hardware::getAllHalInstanceNames(
+        ::android::hardware::wifi::V1_2::IWifi::descriptor)),
+    android::hardware::PrintInstanceNameToString);
diff --git a/wifi/1.3/default/Android.mk b/wifi/1.3/default/Android.mk
deleted file mode 100644
index 29f1c42..0000000
--- a/wifi/1.3/default/Android.mk
+++ /dev/null
@@ -1,169 +0,0 @@
-# Copyright (C) 2016 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-LOCAL_PATH := $(call my-dir)
-
-###
-### android.hardware.wifi static library
-###
-include $(CLEAR_VARS)
-LOCAL_MODULE := android.hardware.wifi@1.0-service-lib
-LOCAL_MODULE_RELATIVE_PATH := hw
-LOCAL_PROPRIETARY_MODULE := true
-LOCAL_CPPFLAGS := -Wall -Werror -Wextra
-ifdef WIFI_HAL_INTERFACE_COMBINATIONS
-LOCAL_CPPFLAGS += -DWIFI_HAL_INTERFACE_COMBINATIONS="$(WIFI_HAL_INTERFACE_COMBINATIONS)"
-endif
-ifdef WIFI_HIDL_FEATURE_AWARE
-LOCAL_CPPFLAGS += -DWIFI_HIDL_FEATURE_AWARE
-endif
-ifdef WIFI_HIDL_FEATURE_DUAL_INTERFACE
-LOCAL_CPPFLAGS += -DWIFI_HIDL_FEATURE_DUAL_INTERFACE
-endif
-ifdef WIFI_HIDL_FEATURE_DISABLE_AP
-LOCAL_CPPFLAGS += -DWIFI_HIDL_FEATURE_DISABLE_AP
-endif
-ifdef WIFI_HIDL_FEATURE_DISABLE_AP_MAC_RANDOMIZATION
-LOCAL_CPPFLAGS += -DWIFI_HIDL_FEATURE_DISABLE_AP_MAC_RANDOMIZATION
-endif
-# Allow implicit fallthroughs in wifi_legacy_hal.cpp until they are fixed.
-LOCAL_CFLAGS += -Wno-error=implicit-fallthrough
-LOCAL_SRC_FILES := \
-    hidl_struct_util.cpp \
-    hidl_sync_util.cpp \
-    ringbuffer.cpp \
-    wifi.cpp \
-    wifi_ap_iface.cpp \
-    wifi_chip.cpp \
-    wifi_feature_flags.cpp \
-    wifi_iface_util.cpp \
-    wifi_legacy_hal.cpp \
-    wifi_legacy_hal_stubs.cpp \
-    wifi_mode_controller.cpp \
-    wifi_nan_iface.cpp \
-    wifi_p2p_iface.cpp \
-    wifi_rtt_controller.cpp \
-    wifi_sta_iface.cpp \
-    wifi_status_util.cpp
-LOCAL_SHARED_LIBRARIES := \
-    libbase \
-    libcutils \
-    libhidlbase \
-    liblog \
-    libnl \
-    libutils \
-    libwifi-hal \
-    libwifi-system-iface \
-    android.hardware.wifi@1.0 \
-    android.hardware.wifi@1.1 \
-    android.hardware.wifi@1.2 \
-    android.hardware.wifi@1.3
-LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)
-include $(BUILD_STATIC_LIBRARY)
-
-###
-### android.hardware.wifi daemon
-###
-include $(CLEAR_VARS)
-LOCAL_MODULE := android.hardware.wifi@1.0-service
-LOCAL_MODULE_RELATIVE_PATH := hw
-LOCAL_PROPRIETARY_MODULE := true
-LOCAL_CPPFLAGS := -Wall -Werror -Wextra
-LOCAL_SRC_FILES := \
-    service.cpp
-LOCAL_SHARED_LIBRARIES := \
-    libbase \
-    libcutils \
-    libhidlbase \
-    liblog \
-    libnl \
-    libutils \
-    libwifi-hal \
-    libwifi-system-iface \
-    android.hardware.wifi@1.0 \
-    android.hardware.wifi@1.1 \
-    android.hardware.wifi@1.2 \
-    android.hardware.wifi@1.3
-LOCAL_STATIC_LIBRARIES := \
-    android.hardware.wifi@1.0-service-lib
-LOCAL_INIT_RC := android.hardware.wifi@1.0-service.rc
-include $(BUILD_EXECUTABLE)
-
-###
-### android.hardware.wifi daemon
-###
-include $(CLEAR_VARS)
-LOCAL_MODULE := android.hardware.wifi@1.0-service-lazy
-LOCAL_OVERRIDES_MODULES := android.hardware.wifi@1.0-service
-LOCAL_CFLAGS := -DLAZY_SERVICE
-LOCAL_MODULE_RELATIVE_PATH := hw
-LOCAL_PROPRIETARY_MODULE := true
-LOCAL_CPPFLAGS := -Wall -Werror -Wextra
-LOCAL_SRC_FILES := \
-    service.cpp
-LOCAL_SHARED_LIBRARIES := \
-    libbase \
-    libcutils \
-    libhidlbase \
-    liblog \
-    libnl \
-    libutils \
-    libwifi-hal \
-    libwifi-system-iface \
-    android.hardware.wifi@1.0 \
-    android.hardware.wifi@1.1 \
-    android.hardware.wifi@1.2 \
-    android.hardware.wifi@1.3
-LOCAL_STATIC_LIBRARIES := \
-    android.hardware.wifi@1.0-service-lib
-LOCAL_INIT_RC := android.hardware.wifi@1.0-service-lazy.rc
-include $(BUILD_EXECUTABLE)
-
-###
-### android.hardware.wifi unit tests.
-###
-include $(CLEAR_VARS)
-LOCAL_MODULE := android.hardware.wifi@1.0-service-tests
-LOCAL_PROPRIETARY_MODULE := true
-LOCAL_CPPFLAGS := -Wall -Werror -Wextra
-LOCAL_SRC_FILES := \
-    tests/hidl_struct_util_unit_tests.cpp \
-    tests/main.cpp \
-    tests/mock_interface_tool.cpp \
-    tests/mock_wifi_feature_flags.cpp \
-    tests/mock_wifi_iface_util.cpp \
-    tests/mock_wifi_legacy_hal.cpp \
-    tests/mock_wifi_mode_controller.cpp \
-    tests/ringbuffer_unit_tests.cpp \
-    tests/wifi_ap_iface_unit_tests.cpp \
-    tests/wifi_nan_iface_unit_tests.cpp \
-    tests/wifi_chip_unit_tests.cpp \
-    tests/wifi_iface_util_unit_tests.cpp
-LOCAL_STATIC_LIBRARIES := \
-    libgmock \
-    libgtest \
-    android.hardware.wifi@1.0-service-lib
-LOCAL_SHARED_LIBRARIES := \
-    libbase \
-    libcutils \
-    libhidlbase \
-    liblog \
-    libnl \
-    libutils \
-    libwifi-hal \
-    libwifi-system-iface \
-    android.hardware.wifi@1.0 \
-    android.hardware.wifi@1.1 \
-    android.hardware.wifi@1.2 \
-    android.hardware.wifi@1.3
-include $(BUILD_NATIVE_TEST)
diff --git a/wifi/1.3/default/hidl_callback_util.h b/wifi/1.3/default/hidl_callback_util.h
deleted file mode 100644
index a44af79..0000000
--- a/wifi/1.3/default/hidl_callback_util.h
+++ /dev/null
@@ -1,124 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef HIDL_CALLBACK_UTIL_H_
-#define HIDL_CALLBACK_UTIL_H_
-
-#include <set>
-
-#include <hidl/HidlSupport.h>
-
-namespace {
-// Type of callback invoked by the death handler.
-using on_death_cb_function = std::function<void(uint64_t)>;
-
-// Private class used to keep track of death of individual
-// callbacks stored in HidlCallbackHandler.
-template <typename CallbackType>
-class HidlDeathHandler : public android::hardware::hidl_death_recipient {
-   public:
-    HidlDeathHandler(const on_death_cb_function& user_cb_function)
-        : cb_function_(user_cb_function) {}
-    ~HidlDeathHandler() = default;
-
-    // Death notification for callbacks.
-    void serviceDied(
-        uint64_t cookie,
-        const android::wp<android::hidl::base::V1_0::IBase>& /* who */)
-        override {
-        cb_function_(cookie);
-    }
-
-   private:
-    on_death_cb_function cb_function_;
-
-    DISALLOW_COPY_AND_ASSIGN(HidlDeathHandler);
-};
-}  // namespace
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-namespace hidl_callback_util {
-template <typename CallbackType>
-// Provides a class to manage callbacks for the various HIDL interfaces and
-// handle the death of the process hosting each callback.
-class HidlCallbackHandler {
-   public:
-    HidlCallbackHandler()
-        : death_handler_(new HidlDeathHandler<CallbackType>(
-              std::bind(&HidlCallbackHandler::onObjectDeath, this,
-                        std::placeholders::_1))) {}
-    ~HidlCallbackHandler() = default;
-
-    bool addCallback(const sp<CallbackType>& cb) {
-        // TODO(b/33818800): Can't compare proxies yet. So, use the cookie
-        // (callback proxy's raw pointer) to track the death of individual
-        // clients.
-        uint64_t cookie = reinterpret_cast<uint64_t>(cb.get());
-        if (cb_set_.find(cb) != cb_set_.end()) {
-            LOG(WARNING) << "Duplicate death notification registration";
-            return true;
-        }
-        if (!cb->linkToDeath(death_handler_, cookie)) {
-            LOG(ERROR) << "Failed to register death notification";
-            return false;
-        }
-        cb_set_.insert(cb);
-        return true;
-    }
-
-    const std::set<android::sp<CallbackType>>& getCallbacks() {
-        return cb_set_;
-    }
-
-    // Death notification for callbacks.
-    void onObjectDeath(uint64_t cookie) {
-        CallbackType* cb = reinterpret_cast<CallbackType*>(cookie);
-        const auto& iter = cb_set_.find(cb);
-        if (iter == cb_set_.end()) {
-            LOG(ERROR) << "Unknown callback death notification received";
-            return;
-        }
-        cb_set_.erase(iter);
-        LOG(DEBUG) << "Dead callback removed from list";
-    }
-
-    void invalidate() {
-        for (const sp<CallbackType>& cb : cb_set_) {
-            if (!cb->unlinkToDeath(death_handler_)) {
-                LOG(ERROR) << "Failed to deregister death notification";
-            }
-        }
-        cb_set_.clear();
-    }
-
-   private:
-    std::set<sp<CallbackType>> cb_set_;
-    sp<HidlDeathHandler<CallbackType>> death_handler_;
-
-    DISALLOW_COPY_AND_ASSIGN(HidlCallbackHandler);
-};
-
-}  // namespace hidl_callback_util
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-#endif  // HIDL_CALLBACK_UTIL_H_
diff --git a/wifi/1.3/default/hidl_return_util.h b/wifi/1.3/default/hidl_return_util.h
deleted file mode 100644
index 9707444..0000000
--- a/wifi/1.3/default/hidl_return_util.h
+++ /dev/null
@@ -1,120 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef HIDL_RETURN_UTIL_H_
-#define HIDL_RETURN_UTIL_H_
-
-#include "hidl_sync_util.h"
-#include "wifi_status_util.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-namespace hidl_return_util {
-using namespace android::hardware::wifi::V1_0;
-
-/**
- * These utility functions are used to invoke a method on the provided
- * HIDL interface object.
- * These functions checks if the provided HIDL interface object is valid.
- * a) if valid, Invokes the corresponding internal implementation function of
- * the HIDL method. It then invokes the HIDL continuation callback with
- * the status and any returned values.
- * b) if invalid, invokes the HIDL continuation callback with the
- * provided error status and default values.
- */
-// Use for HIDL methods which return only an instance of WifiStatus.
-template <typename ObjT, typename WorkFuncT, typename... Args>
-Return<void> validateAndCall(
-    ObjT* obj, WifiStatusCode status_code_if_invalid, WorkFuncT&& work,
-    const std::function<void(const WifiStatus&)>& hidl_cb, Args&&... args) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (obj->isValid()) {
-        hidl_cb((obj->*work)(std::forward<Args>(args)...));
-    } else {
-        hidl_cb(createWifiStatus(status_code_if_invalid));
-    }
-    return Void();
-}
-
-// Use for HIDL methods which return only an instance of WifiStatus.
-// This version passes the global lock acquired to the body of the method.
-// Note: Only used by IWifi::stop() currently.
-template <typename ObjT, typename WorkFuncT, typename... Args>
-Return<void> validateAndCallWithLock(
-    ObjT* obj, WifiStatusCode status_code_if_invalid, WorkFuncT&& work,
-    const std::function<void(const WifiStatus&)>& hidl_cb, Args&&... args) {
-    auto lock = hidl_sync_util::acquireGlobalLock();
-    if (obj->isValid()) {
-        hidl_cb((obj->*work)(&lock, std::forward<Args>(args)...));
-    } else {
-        hidl_cb(createWifiStatus(status_code_if_invalid));
-    }
-    return Void();
-}
-
-// Use for HIDL methods which return instance of WifiStatus and a single return
-// value.
-template <typename ObjT, typename WorkFuncT, typename ReturnT, typename... Args>
-Return<void> validateAndCall(
-    ObjT* obj, WifiStatusCode status_code_if_invalid, WorkFuncT&& work,
-    const std::function<void(const WifiStatus&, ReturnT)>& hidl_cb,
-    Args&&... args) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (obj->isValid()) {
-        const auto& ret_pair = (obj->*work)(std::forward<Args>(args)...);
-        const WifiStatus& status = std::get<0>(ret_pair);
-        const auto& ret_value = std::get<1>(ret_pair);
-        hidl_cb(status, ret_value);
-    } else {
-        hidl_cb(createWifiStatus(status_code_if_invalid),
-                typename std::remove_reference<ReturnT>::type());
-    }
-    return Void();
-}
-
-// Use for HIDL methods which return instance of WifiStatus and 2 return
-// values.
-template <typename ObjT, typename WorkFuncT, typename ReturnT1,
-          typename ReturnT2, typename... Args>
-Return<void> validateAndCall(
-    ObjT* obj, WifiStatusCode status_code_if_invalid, WorkFuncT&& work,
-    const std::function<void(const WifiStatus&, ReturnT1, ReturnT2)>& hidl_cb,
-    Args&&... args) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (obj->isValid()) {
-        const auto& ret_tuple = (obj->*work)(std::forward<Args>(args)...);
-        const WifiStatus& status = std::get<0>(ret_tuple);
-        const auto& ret_value1 = std::get<1>(ret_tuple);
-        const auto& ret_value2 = std::get<2>(ret_tuple);
-        hidl_cb(status, ret_value1, ret_value2);
-    } else {
-        hidl_cb(createWifiStatus(status_code_if_invalid),
-                typename std::remove_reference<ReturnT1>::type(),
-                typename std::remove_reference<ReturnT2>::type());
-    }
-    return Void();
-}
-
-}  // namespace hidl_return_util
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-#endif  // HIDL_RETURN_UTIL_H_
diff --git a/wifi/1.3/default/hidl_struct_util.cpp b/wifi/1.3/default/hidl_struct_util.cpp
deleted file mode 100644
index d305c09..0000000
--- a/wifi/1.3/default/hidl_struct_util.cpp
+++ /dev/null
@@ -1,2701 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-#include <utils/SystemClock.h>
-
-#include "hidl_struct_util.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-namespace hidl_struct_util {
-
-WifiChannelWidthInMhz convertLegacyWifiChannelWidthToHidl(
-    legacy_hal::wifi_channel_width type);
-
-hidl_string safeConvertChar(const char* str, size_t max_len) {
-    const char* c = str;
-    size_t size = 0;
-    while (*c && (unsigned char)*c < 128 && size < max_len) {
-        ++size;
-        ++c;
-    }
-    return hidl_string(str, size);
-}
-
-IWifiChip::ChipCapabilityMask convertLegacyLoggerFeatureToHidlChipCapability(
-    uint32_t feature) {
-    using HidlChipCaps = IWifiChip::ChipCapabilityMask;
-    switch (feature) {
-        case legacy_hal::WIFI_LOGGER_MEMORY_DUMP_SUPPORTED:
-            return HidlChipCaps::DEBUG_MEMORY_FIRMWARE_DUMP;
-        case legacy_hal::WIFI_LOGGER_DRIVER_DUMP_SUPPORTED:
-            return HidlChipCaps::DEBUG_MEMORY_DRIVER_DUMP;
-        case legacy_hal::WIFI_LOGGER_CONNECT_EVENT_SUPPORTED:
-            return HidlChipCaps::DEBUG_RING_BUFFER_CONNECT_EVENT;
-        case legacy_hal::WIFI_LOGGER_POWER_EVENT_SUPPORTED:
-            return HidlChipCaps::DEBUG_RING_BUFFER_POWER_EVENT;
-        case legacy_hal::WIFI_LOGGER_WAKE_LOCK_SUPPORTED:
-            return HidlChipCaps::DEBUG_RING_BUFFER_WAKELOCK_EVENT;
-    };
-    CHECK(false) << "Unknown legacy feature: " << feature;
-    return {};
-}
-
-IWifiStaIface::StaIfaceCapabilityMask
-convertLegacyLoggerFeatureToHidlStaIfaceCapability(uint32_t feature) {
-    using HidlStaIfaceCaps = IWifiStaIface::StaIfaceCapabilityMask;
-    switch (feature) {
-        case legacy_hal::WIFI_LOGGER_PACKET_FATE_SUPPORTED:
-            return HidlStaIfaceCaps::DEBUG_PACKET_FATE;
-    };
-    CHECK(false) << "Unknown legacy feature: " << feature;
-    return {};
-}
-
-V1_3::IWifiChip::ChipCapabilityMask convertLegacyFeatureToHidlChipCapability(
-    uint32_t feature) {
-    using HidlChipCaps = V1_3::IWifiChip::ChipCapabilityMask;
-    switch (feature) {
-        case WIFI_FEATURE_SET_TX_POWER_LIMIT:
-            return HidlChipCaps::SET_TX_POWER_LIMIT;
-        case WIFI_FEATURE_USE_BODY_HEAD_SAR:
-            return HidlChipCaps::USE_BODY_HEAD_SAR;
-        case WIFI_FEATURE_D2D_RTT:
-            return HidlChipCaps::D2D_RTT;
-        case WIFI_FEATURE_D2AP_RTT:
-            return HidlChipCaps::D2AP_RTT;
-        case WIFI_FEATURE_SET_LATENCY_MODE:
-            return HidlChipCaps::SET_LATENCY_MODE;
-        case WIFI_FEATURE_P2P_RAND_MAC:
-            return HidlChipCaps::P2P_RAND_MAC;
-    };
-    CHECK(false) << "Unknown legacy feature: " << feature;
-    return {};
-}
-
-IWifiStaIface::StaIfaceCapabilityMask
-convertLegacyFeatureToHidlStaIfaceCapability(uint32_t feature) {
-    using HidlStaIfaceCaps = IWifiStaIface::StaIfaceCapabilityMask;
-    switch (feature) {
-        case WIFI_FEATURE_GSCAN:
-            return HidlStaIfaceCaps::BACKGROUND_SCAN;
-        case WIFI_FEATURE_LINK_LAYER_STATS:
-            return HidlStaIfaceCaps::LINK_LAYER_STATS;
-        case WIFI_FEATURE_RSSI_MONITOR:
-            return HidlStaIfaceCaps::RSSI_MONITOR;
-        case WIFI_FEATURE_CONTROL_ROAMING:
-            return HidlStaIfaceCaps::CONTROL_ROAMING;
-        case WIFI_FEATURE_IE_WHITELIST:
-            return HidlStaIfaceCaps::PROBE_IE_WHITELIST;
-        case WIFI_FEATURE_SCAN_RAND:
-            return HidlStaIfaceCaps::SCAN_RAND;
-        case WIFI_FEATURE_INFRA_5G:
-            return HidlStaIfaceCaps::STA_5G;
-        case WIFI_FEATURE_HOTSPOT:
-            return HidlStaIfaceCaps::HOTSPOT;
-        case WIFI_FEATURE_PNO:
-            return HidlStaIfaceCaps::PNO;
-        case WIFI_FEATURE_TDLS:
-            return HidlStaIfaceCaps::TDLS;
-        case WIFI_FEATURE_TDLS_OFFCHANNEL:
-            return HidlStaIfaceCaps::TDLS_OFFCHANNEL;
-        case WIFI_FEATURE_CONFIG_NDO:
-            return HidlStaIfaceCaps::ND_OFFLOAD;
-        case WIFI_FEATURE_MKEEP_ALIVE:
-            return HidlStaIfaceCaps::KEEP_ALIVE;
-    };
-    CHECK(false) << "Unknown legacy feature: " << feature;
-    return {};
-}
-
-bool convertLegacyFeaturesToHidlChipCapabilities(
-    uint32_t legacy_feature_set, uint32_t legacy_logger_feature_set,
-    uint32_t* hidl_caps) {
-    if (!hidl_caps) {
-        return false;
-    }
-    *hidl_caps = {};
-    using HidlChipCaps = IWifiChip::ChipCapabilityMask;
-    for (const auto feature : {legacy_hal::WIFI_LOGGER_MEMORY_DUMP_SUPPORTED,
-                               legacy_hal::WIFI_LOGGER_DRIVER_DUMP_SUPPORTED,
-                               legacy_hal::WIFI_LOGGER_CONNECT_EVENT_SUPPORTED,
-                               legacy_hal::WIFI_LOGGER_POWER_EVENT_SUPPORTED,
-                               legacy_hal::WIFI_LOGGER_WAKE_LOCK_SUPPORTED}) {
-        if (feature & legacy_logger_feature_set) {
-            *hidl_caps |=
-                convertLegacyLoggerFeatureToHidlChipCapability(feature);
-        }
-    }
-    std::vector<uint32_t> features = {WIFI_FEATURE_SET_TX_POWER_LIMIT,
-                                      WIFI_FEATURE_USE_BODY_HEAD_SAR,
-                                      WIFI_FEATURE_D2D_RTT,
-                                      WIFI_FEATURE_D2AP_RTT,
-                                      WIFI_FEATURE_SET_LATENCY_MODE,
-                                      WIFI_FEATURE_P2P_RAND_MAC};
-    for (const auto feature : features) {
-        if (feature & legacy_feature_set) {
-            *hidl_caps |= convertLegacyFeatureToHidlChipCapability(feature);
-        }
-    }
-
-    // There are no flags for these 3 in the legacy feature set. Adding them to
-    // the set because all the current devices support it.
-    *hidl_caps |= HidlChipCaps::DEBUG_RING_BUFFER_VENDOR_DATA;
-    *hidl_caps |= HidlChipCaps::DEBUG_HOST_WAKE_REASON_STATS;
-    *hidl_caps |= HidlChipCaps::DEBUG_ERROR_ALERTS;
-    return true;
-}
-
-WifiDebugRingBufferFlags convertLegacyDebugRingBufferFlagsToHidl(
-    uint32_t flag) {
-    switch (flag) {
-        case WIFI_RING_BUFFER_FLAG_HAS_BINARY_ENTRIES:
-            return WifiDebugRingBufferFlags::HAS_BINARY_ENTRIES;
-        case WIFI_RING_BUFFER_FLAG_HAS_ASCII_ENTRIES:
-            return WifiDebugRingBufferFlags::HAS_ASCII_ENTRIES;
-    };
-    CHECK(false) << "Unknown legacy flag: " << flag;
-    return {};
-}
-
-bool convertLegacyDebugRingBufferStatusToHidl(
-    const legacy_hal::wifi_ring_buffer_status& legacy_status,
-    WifiDebugRingBufferStatus* hidl_status) {
-    if (!hidl_status) {
-        return false;
-    }
-    *hidl_status = {};
-    hidl_status->ringName =
-        safeConvertChar(reinterpret_cast<const char*>(legacy_status.name),
-                        sizeof(legacy_status.name));
-    hidl_status->flags = 0;
-    for (const auto flag : {WIFI_RING_BUFFER_FLAG_HAS_BINARY_ENTRIES,
-                            WIFI_RING_BUFFER_FLAG_HAS_ASCII_ENTRIES}) {
-        if (flag & legacy_status.flags) {
-            hidl_status->flags |= static_cast<
-                std::underlying_type<WifiDebugRingBufferFlags>::type>(
-                convertLegacyDebugRingBufferFlagsToHidl(flag));
-        }
-    }
-    hidl_status->ringId = legacy_status.ring_id;
-    hidl_status->sizeInBytes = legacy_status.ring_buffer_byte_size;
-    // Calculate free size of the ring the buffer. We don't need to send the
-    // exact read/write pointers that were there in the legacy HAL interface.
-    if (legacy_status.written_bytes >= legacy_status.read_bytes) {
-        hidl_status->freeSizeInBytes =
-            legacy_status.ring_buffer_byte_size -
-            (legacy_status.written_bytes - legacy_status.read_bytes);
-    } else {
-        hidl_status->freeSizeInBytes =
-            legacy_status.read_bytes - legacy_status.written_bytes;
-    }
-    hidl_status->verboseLevel = legacy_status.verbose_level;
-    return true;
-}
-
-bool convertLegacyVectorOfDebugRingBufferStatusToHidl(
-    const std::vector<legacy_hal::wifi_ring_buffer_status>& legacy_status_vec,
-    std::vector<WifiDebugRingBufferStatus>* hidl_status_vec) {
-    if (!hidl_status_vec) {
-        return false;
-    }
-    *hidl_status_vec = {};
-    for (const auto& legacy_status : legacy_status_vec) {
-        WifiDebugRingBufferStatus hidl_status;
-        if (!convertLegacyDebugRingBufferStatusToHidl(legacy_status,
-                                                      &hidl_status)) {
-            return false;
-        }
-        hidl_status_vec->push_back(hidl_status);
-    }
-    return true;
-}
-
-bool convertLegacyWakeReasonStatsToHidl(
-    const legacy_hal::WakeReasonStats& legacy_stats,
-    WifiDebugHostWakeReasonStats* hidl_stats) {
-    if (!hidl_stats) {
-        return false;
-    }
-    *hidl_stats = {};
-    hidl_stats->totalCmdEventWakeCnt =
-        legacy_stats.wake_reason_cnt.total_cmd_event_wake;
-    hidl_stats->cmdEventWakeCntPerType = legacy_stats.cmd_event_wake_cnt;
-    hidl_stats->totalDriverFwLocalWakeCnt =
-        legacy_stats.wake_reason_cnt.total_driver_fw_local_wake;
-    hidl_stats->driverFwLocalWakeCntPerType =
-        legacy_stats.driver_fw_local_wake_cnt;
-    hidl_stats->totalRxPacketWakeCnt =
-        legacy_stats.wake_reason_cnt.total_rx_data_wake;
-    hidl_stats->rxPktWakeDetails.rxUnicastCnt =
-        legacy_stats.wake_reason_cnt.rx_wake_details.rx_unicast_cnt;
-    hidl_stats->rxPktWakeDetails.rxMulticastCnt =
-        legacy_stats.wake_reason_cnt.rx_wake_details.rx_multicast_cnt;
-    hidl_stats->rxPktWakeDetails.rxBroadcastCnt =
-        legacy_stats.wake_reason_cnt.rx_wake_details.rx_broadcast_cnt;
-    hidl_stats->rxMulticastPkWakeDetails.ipv4RxMulticastAddrCnt =
-        legacy_stats.wake_reason_cnt.rx_multicast_wake_pkt_info
-            .ipv4_rx_multicast_addr_cnt;
-    hidl_stats->rxMulticastPkWakeDetails.ipv6RxMulticastAddrCnt =
-        legacy_stats.wake_reason_cnt.rx_multicast_wake_pkt_info
-            .ipv6_rx_multicast_addr_cnt;
-    hidl_stats->rxMulticastPkWakeDetails.otherRxMulticastAddrCnt =
-        legacy_stats.wake_reason_cnt.rx_multicast_wake_pkt_info
-            .other_rx_multicast_addr_cnt;
-    hidl_stats->rxIcmpPkWakeDetails.icmpPkt =
-        legacy_stats.wake_reason_cnt.rx_wake_pkt_classification_info.icmp_pkt;
-    hidl_stats->rxIcmpPkWakeDetails.icmp6Pkt =
-        legacy_stats.wake_reason_cnt.rx_wake_pkt_classification_info.icmp6_pkt;
-    hidl_stats->rxIcmpPkWakeDetails.icmp6Ra =
-        legacy_stats.wake_reason_cnt.rx_wake_pkt_classification_info.icmp6_ra;
-    hidl_stats->rxIcmpPkWakeDetails.icmp6Na =
-        legacy_stats.wake_reason_cnt.rx_wake_pkt_classification_info.icmp6_na;
-    hidl_stats->rxIcmpPkWakeDetails.icmp6Ns =
-        legacy_stats.wake_reason_cnt.rx_wake_pkt_classification_info.icmp6_ns;
-    return true;
-}
-
-legacy_hal::wifi_power_scenario convertHidlTxPowerScenarioToLegacy(
-    V1_1::IWifiChip::TxPowerScenario hidl_scenario) {
-    switch (hidl_scenario) {
-        // This is the only supported scenario for V1_1
-        case V1_1::IWifiChip::TxPowerScenario::VOICE_CALL:
-            return legacy_hal::WIFI_POWER_SCENARIO_VOICE_CALL;
-    };
-    CHECK(false);
-}
-
-legacy_hal::wifi_power_scenario convertHidlTxPowerScenarioToLegacy_1_2(
-    V1_2::IWifiChip::TxPowerScenario hidl_scenario) {
-    switch (hidl_scenario) {
-        // This is the only supported scenario for V1_1
-        case V1_2::IWifiChip::TxPowerScenario::VOICE_CALL:
-            return legacy_hal::WIFI_POWER_SCENARIO_VOICE_CALL;
-        // Those are the supported scenarios for V1_2
-        case V1_2::IWifiChip::TxPowerScenario::ON_HEAD_CELL_OFF:
-            return legacy_hal::WIFI_POWER_SCENARIO_ON_HEAD_CELL_OFF;
-        case V1_2::IWifiChip::TxPowerScenario::ON_HEAD_CELL_ON:
-            return legacy_hal::WIFI_POWER_SCENARIO_ON_HEAD_CELL_ON;
-        case V1_2::IWifiChip::TxPowerScenario::ON_BODY_CELL_OFF:
-            return legacy_hal::WIFI_POWER_SCENARIO_ON_BODY_CELL_OFF;
-        case V1_2::IWifiChip::TxPowerScenario::ON_BODY_CELL_ON:
-            return legacy_hal::WIFI_POWER_SCENARIO_ON_BODY_CELL_ON;
-    };
-    CHECK(false);
-}
-
-legacy_hal::wifi_latency_mode convertHidlLatencyModeToLegacy(
-    IWifiChip::LatencyMode hidl_latency_mode) {
-    switch (hidl_latency_mode) {
-        case IWifiChip::LatencyMode::NORMAL:
-            return legacy_hal::WIFI_LATENCY_MODE_NORMAL;
-        case IWifiChip::LatencyMode::LOW:
-            return legacy_hal::WIFI_LATENCY_MODE_LOW;
-    }
-    CHECK(false);
-}
-
-bool convertLegacyWifiMacInfoToHidl(
-    const legacy_hal::WifiMacInfo& legacy_mac_info,
-    V1_2::IWifiChipEventCallback::RadioModeInfo* hidl_radio_mode_info) {
-    if (!hidl_radio_mode_info) {
-        return false;
-    }
-    *hidl_radio_mode_info = {};
-
-    hidl_radio_mode_info->radioId = legacy_mac_info.wlan_mac_id;
-    // Convert from bitmask of bands in the legacy HAL to enum value in
-    // the HIDL interface.
-    if (legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_2_4_BAND &&
-        legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_5_0_BAND) {
-        hidl_radio_mode_info->bandInfo = WifiBand::BAND_24GHZ_5GHZ;
-    } else if (legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_2_4_BAND) {
-        hidl_radio_mode_info->bandInfo = WifiBand::BAND_24GHZ;
-    } else if (legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_5_0_BAND) {
-        hidl_radio_mode_info->bandInfo = WifiBand::BAND_5GHZ;
-    } else {
-        hidl_radio_mode_info->bandInfo = WifiBand::BAND_UNSPECIFIED;
-    }
-    std::vector<V1_2::IWifiChipEventCallback::IfaceInfo> iface_info_vec;
-    for (const auto& legacy_iface_info : legacy_mac_info.iface_infos) {
-        V1_2::IWifiChipEventCallback::IfaceInfo iface_info;
-        iface_info.name = legacy_iface_info.name;
-        iface_info.channel = legacy_iface_info.channel;
-        iface_info_vec.push_back(iface_info);
-    }
-    hidl_radio_mode_info->ifaceInfos = iface_info_vec;
-    return true;
-}
-
-bool convertLegacyWifiMacInfosToHidl(
-    const std::vector<legacy_hal::WifiMacInfo>& legacy_mac_infos,
-    std::vector<V1_2::IWifiChipEventCallback::RadioModeInfo>*
-        hidl_radio_mode_infos) {
-    if (!hidl_radio_mode_infos) {
-        return false;
-    }
-    *hidl_radio_mode_infos = {};
-
-    for (const auto& legacy_mac_info : legacy_mac_infos) {
-        V1_2::IWifiChipEventCallback::RadioModeInfo hidl_radio_mode_info;
-        if (!convertLegacyWifiMacInfoToHidl(legacy_mac_info,
-                                            &hidl_radio_mode_info)) {
-            return false;
-        }
-        hidl_radio_mode_infos->push_back(hidl_radio_mode_info);
-    }
-    return true;
-}
-
-bool convertLegacyFeaturesToHidlStaCapabilities(
-    uint32_t legacy_feature_set, uint32_t legacy_logger_feature_set,
-    uint32_t* hidl_caps) {
-    if (!hidl_caps) {
-        return false;
-    }
-    *hidl_caps = {};
-    using HidlStaIfaceCaps = IWifiStaIface::StaIfaceCapabilityMask;
-    for (const auto feature : {legacy_hal::WIFI_LOGGER_PACKET_FATE_SUPPORTED}) {
-        if (feature & legacy_logger_feature_set) {
-            *hidl_caps |=
-                convertLegacyLoggerFeatureToHidlStaIfaceCapability(feature);
-        }
-    }
-    for (const auto feature :
-         {WIFI_FEATURE_GSCAN, WIFI_FEATURE_LINK_LAYER_STATS,
-          WIFI_FEATURE_RSSI_MONITOR, WIFI_FEATURE_CONTROL_ROAMING,
-          WIFI_FEATURE_IE_WHITELIST, WIFI_FEATURE_SCAN_RAND,
-          WIFI_FEATURE_INFRA_5G, WIFI_FEATURE_HOTSPOT, WIFI_FEATURE_PNO,
-          WIFI_FEATURE_TDLS, WIFI_FEATURE_TDLS_OFFCHANNEL,
-          WIFI_FEATURE_CONFIG_NDO, WIFI_FEATURE_MKEEP_ALIVE}) {
-        if (feature & legacy_feature_set) {
-            *hidl_caps |= convertLegacyFeatureToHidlStaIfaceCapability(feature);
-        }
-    }
-    // There is no flag for this one in the legacy feature set. Adding it to the
-    // set because all the current devices support it.
-    *hidl_caps |= HidlStaIfaceCaps::APF;
-    return true;
-}
-
-bool convertLegacyApfCapabilitiesToHidl(
-    const legacy_hal::PacketFilterCapabilities& legacy_caps,
-    StaApfPacketFilterCapabilities* hidl_caps) {
-    if (!hidl_caps) {
-        return false;
-    }
-    *hidl_caps = {};
-    hidl_caps->version = legacy_caps.version;
-    hidl_caps->maxLength = legacy_caps.max_len;
-    return true;
-}
-
-uint8_t convertHidlGscanReportEventFlagToLegacy(
-    StaBackgroundScanBucketEventReportSchemeMask hidl_flag) {
-    using HidlFlag = StaBackgroundScanBucketEventReportSchemeMask;
-    switch (hidl_flag) {
-        case HidlFlag::EACH_SCAN:
-            return REPORT_EVENTS_EACH_SCAN;
-        case HidlFlag::FULL_RESULTS:
-            return REPORT_EVENTS_FULL_RESULTS;
-        case HidlFlag::NO_BATCH:
-            return REPORT_EVENTS_NO_BATCH;
-    };
-    CHECK(false);
-}
-
-StaScanDataFlagMask convertLegacyGscanDataFlagToHidl(uint8_t legacy_flag) {
-    switch (legacy_flag) {
-        case legacy_hal::WIFI_SCAN_FLAG_INTERRUPTED:
-            return StaScanDataFlagMask::INTERRUPTED;
-    };
-    CHECK(false) << "Unknown legacy flag: " << legacy_flag;
-    // To silence the compiler warning about reaching the end of non-void
-    // function.
-    return {};
-}
-
-bool convertLegacyGscanCapabilitiesToHidl(
-    const legacy_hal::wifi_gscan_capabilities& legacy_caps,
-    StaBackgroundScanCapabilities* hidl_caps) {
-    if (!hidl_caps) {
-        return false;
-    }
-    *hidl_caps = {};
-    hidl_caps->maxCacheSize = legacy_caps.max_scan_cache_size;
-    hidl_caps->maxBuckets = legacy_caps.max_scan_buckets;
-    hidl_caps->maxApCachePerScan = legacy_caps.max_ap_cache_per_scan;
-    hidl_caps->maxReportingThreshold = legacy_caps.max_scan_reporting_threshold;
-    return true;
-}
-
-legacy_hal::wifi_band convertHidlWifiBandToLegacy(WifiBand band) {
-    switch (band) {
-        case WifiBand::BAND_UNSPECIFIED:
-            return legacy_hal::WIFI_BAND_UNSPECIFIED;
-        case WifiBand::BAND_24GHZ:
-            return legacy_hal::WIFI_BAND_BG;
-        case WifiBand::BAND_5GHZ:
-            return legacy_hal::WIFI_BAND_A;
-        case WifiBand::BAND_5GHZ_DFS:
-            return legacy_hal::WIFI_BAND_A_DFS;
-        case WifiBand::BAND_5GHZ_WITH_DFS:
-            return legacy_hal::WIFI_BAND_A_WITH_DFS;
-        case WifiBand::BAND_24GHZ_5GHZ:
-            return legacy_hal::WIFI_BAND_ABG;
-        case WifiBand::BAND_24GHZ_5GHZ_WITH_DFS:
-            return legacy_hal::WIFI_BAND_ABG_WITH_DFS;
-    };
-    CHECK(false);
-}
-
-bool convertHidlGscanParamsToLegacy(
-    const StaBackgroundScanParameters& hidl_scan_params,
-    legacy_hal::wifi_scan_cmd_params* legacy_scan_params) {
-    if (!legacy_scan_params) {
-        return false;
-    }
-    *legacy_scan_params = {};
-    legacy_scan_params->base_period = hidl_scan_params.basePeriodInMs;
-    legacy_scan_params->max_ap_per_scan = hidl_scan_params.maxApPerScan;
-    legacy_scan_params->report_threshold_percent =
-        hidl_scan_params.reportThresholdPercent;
-    legacy_scan_params->report_threshold_num_scans =
-        hidl_scan_params.reportThresholdNumScans;
-    if (hidl_scan_params.buckets.size() > MAX_BUCKETS) {
-        return false;
-    }
-    legacy_scan_params->num_buckets = hidl_scan_params.buckets.size();
-    for (uint32_t bucket_idx = 0; bucket_idx < hidl_scan_params.buckets.size();
-         bucket_idx++) {
-        const StaBackgroundScanBucketParameters& hidl_bucket_spec =
-            hidl_scan_params.buckets[bucket_idx];
-        legacy_hal::wifi_scan_bucket_spec& legacy_bucket_spec =
-            legacy_scan_params->buckets[bucket_idx];
-        if (hidl_bucket_spec.bucketIdx >= MAX_BUCKETS) {
-            return false;
-        }
-        legacy_bucket_spec.bucket = hidl_bucket_spec.bucketIdx;
-        legacy_bucket_spec.band =
-            convertHidlWifiBandToLegacy(hidl_bucket_spec.band);
-        legacy_bucket_spec.period = hidl_bucket_spec.periodInMs;
-        legacy_bucket_spec.max_period =
-            hidl_bucket_spec.exponentialMaxPeriodInMs;
-        legacy_bucket_spec.base = hidl_bucket_spec.exponentialBase;
-        legacy_bucket_spec.step_count = hidl_bucket_spec.exponentialStepCount;
-        legacy_bucket_spec.report_events = 0;
-        using HidlFlag = StaBackgroundScanBucketEventReportSchemeMask;
-        for (const auto flag : {HidlFlag::EACH_SCAN, HidlFlag::FULL_RESULTS,
-                                HidlFlag::NO_BATCH}) {
-            if (hidl_bucket_spec.eventReportScheme &
-                static_cast<std::underlying_type<HidlFlag>::type>(flag)) {
-                legacy_bucket_spec.report_events |=
-                    convertHidlGscanReportEventFlagToLegacy(flag);
-            }
-        }
-        if (hidl_bucket_spec.frequencies.size() > MAX_CHANNELS) {
-            return false;
-        }
-        legacy_bucket_spec.num_channels = hidl_bucket_spec.frequencies.size();
-        for (uint32_t freq_idx = 0;
-             freq_idx < hidl_bucket_spec.frequencies.size(); freq_idx++) {
-            legacy_bucket_spec.channels[freq_idx].channel =
-                hidl_bucket_spec.frequencies[freq_idx];
-        }
-    }
-    return true;
-}
-
-bool convertLegacyIeToHidl(
-    const legacy_hal::wifi_information_element& legacy_ie,
-    WifiInformationElement* hidl_ie) {
-    if (!hidl_ie) {
-        return false;
-    }
-    *hidl_ie = {};
-    hidl_ie->id = legacy_ie.id;
-    hidl_ie->data =
-        std::vector<uint8_t>(legacy_ie.data, legacy_ie.data + legacy_ie.len);
-    return true;
-}
-
-bool convertLegacyIeBlobToHidl(const uint8_t* ie_blob, uint32_t ie_blob_len,
-                               std::vector<WifiInformationElement>* hidl_ies) {
-    if (!ie_blob || !hidl_ies) {
-        return false;
-    }
-    *hidl_ies = {};
-    const uint8_t* ies_begin = ie_blob;
-    const uint8_t* ies_end = ie_blob + ie_blob_len;
-    const uint8_t* next_ie = ies_begin;
-    using wifi_ie = legacy_hal::wifi_information_element;
-    constexpr size_t kIeHeaderLen = sizeof(wifi_ie);
-    // Each IE should atleast have the header (i.e |id| & |len| fields).
-    while (next_ie + kIeHeaderLen <= ies_end) {
-        const wifi_ie& legacy_ie = (*reinterpret_cast<const wifi_ie*>(next_ie));
-        uint32_t curr_ie_len = kIeHeaderLen + legacy_ie.len;
-        if (next_ie + curr_ie_len > ies_end) {
-            LOG(ERROR) << "Error parsing IE blob. Next IE: " << (void*)next_ie
-                       << ", Curr IE len: " << curr_ie_len
-                       << ", IEs End: " << (void*)ies_end;
-            break;
-        }
-        WifiInformationElement hidl_ie;
-        if (!convertLegacyIeToHidl(legacy_ie, &hidl_ie)) {
-            LOG(ERROR) << "Error converting IE. Id: " << legacy_ie.id
-                       << ", len: " << legacy_ie.len;
-            break;
-        }
-        hidl_ies->push_back(std::move(hidl_ie));
-        next_ie += curr_ie_len;
-    }
-    // Check if the blob has been fully consumed.
-    if (next_ie != ies_end) {
-        LOG(ERROR) << "Failed to fully parse IE blob. Next IE: "
-                   << (void*)next_ie << ", IEs End: " << (void*)ies_end;
-    }
-    return true;
-}
-
-bool convertLegacyGscanResultToHidl(
-    const legacy_hal::wifi_scan_result& legacy_scan_result, bool has_ie_data,
-    StaScanResult* hidl_scan_result) {
-    if (!hidl_scan_result) {
-        return false;
-    }
-    *hidl_scan_result = {};
-    hidl_scan_result->timeStampInUs = legacy_scan_result.ts;
-    hidl_scan_result->ssid = std::vector<uint8_t>(
-        legacy_scan_result.ssid,
-        legacy_scan_result.ssid + strnlen(legacy_scan_result.ssid,
-                                          sizeof(legacy_scan_result.ssid) - 1));
-    memcpy(hidl_scan_result->bssid.data(), legacy_scan_result.bssid,
-           hidl_scan_result->bssid.size());
-    hidl_scan_result->frequency = legacy_scan_result.channel;
-    hidl_scan_result->rssi = legacy_scan_result.rssi;
-    hidl_scan_result->beaconPeriodInMs = legacy_scan_result.beacon_period;
-    hidl_scan_result->capability = legacy_scan_result.capability;
-    if (has_ie_data) {
-        std::vector<WifiInformationElement> ies;
-        if (!convertLegacyIeBlobToHidl(
-                reinterpret_cast<const uint8_t*>(legacy_scan_result.ie_data),
-                legacy_scan_result.ie_length, &ies)) {
-            return false;
-        }
-        hidl_scan_result->informationElements = std::move(ies);
-    }
-    return true;
-}
-
-bool convertLegacyCachedGscanResultsToHidl(
-    const legacy_hal::wifi_cached_scan_results& legacy_cached_scan_result,
-    StaScanData* hidl_scan_data) {
-    if (!hidl_scan_data) {
-        return false;
-    }
-    *hidl_scan_data = {};
-    hidl_scan_data->flags = 0;
-    for (const auto flag : {legacy_hal::WIFI_SCAN_FLAG_INTERRUPTED}) {
-        if (legacy_cached_scan_result.flags & flag) {
-            hidl_scan_data->flags |=
-                static_cast<std::underlying_type<StaScanDataFlagMask>::type>(
-                    convertLegacyGscanDataFlagToHidl(flag));
-        }
-    }
-    hidl_scan_data->bucketsScanned = legacy_cached_scan_result.buckets_scanned;
-
-    CHECK(legacy_cached_scan_result.num_results >= 0 &&
-          legacy_cached_scan_result.num_results <= MAX_AP_CACHE_PER_SCAN);
-    std::vector<StaScanResult> hidl_scan_results;
-    for (int32_t result_idx = 0;
-         result_idx < legacy_cached_scan_result.num_results; result_idx++) {
-        StaScanResult hidl_scan_result;
-        if (!convertLegacyGscanResultToHidl(
-                legacy_cached_scan_result.results[result_idx], false,
-                &hidl_scan_result)) {
-            return false;
-        }
-        hidl_scan_results.push_back(hidl_scan_result);
-    }
-    hidl_scan_data->results = std::move(hidl_scan_results);
-    return true;
-}
-
-bool convertLegacyVectorOfCachedGscanResultsToHidl(
-    const std::vector<legacy_hal::wifi_cached_scan_results>&
-        legacy_cached_scan_results,
-    std::vector<StaScanData>* hidl_scan_datas) {
-    if (!hidl_scan_datas) {
-        return false;
-    }
-    *hidl_scan_datas = {};
-    for (const auto& legacy_cached_scan_result : legacy_cached_scan_results) {
-        StaScanData hidl_scan_data;
-        if (!convertLegacyCachedGscanResultsToHidl(legacy_cached_scan_result,
-                                                   &hidl_scan_data)) {
-            return false;
-        }
-        hidl_scan_datas->push_back(hidl_scan_data);
-    }
-    return true;
-}
-
-WifiDebugTxPacketFate convertLegacyDebugTxPacketFateToHidl(
-    legacy_hal::wifi_tx_packet_fate fate) {
-    switch (fate) {
-        case legacy_hal::TX_PKT_FATE_ACKED:
-            return WifiDebugTxPacketFate::ACKED;
-        case legacy_hal::TX_PKT_FATE_SENT:
-            return WifiDebugTxPacketFate::SENT;
-        case legacy_hal::TX_PKT_FATE_FW_QUEUED:
-            return WifiDebugTxPacketFate::FW_QUEUED;
-        case legacy_hal::TX_PKT_FATE_FW_DROP_INVALID:
-            return WifiDebugTxPacketFate::FW_DROP_INVALID;
-        case legacy_hal::TX_PKT_FATE_FW_DROP_NOBUFS:
-            return WifiDebugTxPacketFate::FW_DROP_NOBUFS;
-        case legacy_hal::TX_PKT_FATE_FW_DROP_OTHER:
-            return WifiDebugTxPacketFate::FW_DROP_OTHER;
-        case legacy_hal::TX_PKT_FATE_DRV_QUEUED:
-            return WifiDebugTxPacketFate::DRV_QUEUED;
-        case legacy_hal::TX_PKT_FATE_DRV_DROP_INVALID:
-            return WifiDebugTxPacketFate::DRV_DROP_INVALID;
-        case legacy_hal::TX_PKT_FATE_DRV_DROP_NOBUFS:
-            return WifiDebugTxPacketFate::DRV_DROP_NOBUFS;
-        case legacy_hal::TX_PKT_FATE_DRV_DROP_OTHER:
-            return WifiDebugTxPacketFate::DRV_DROP_OTHER;
-    };
-    CHECK(false) << "Unknown legacy fate type: " << fate;
-}
-
-WifiDebugRxPacketFate convertLegacyDebugRxPacketFateToHidl(
-    legacy_hal::wifi_rx_packet_fate fate) {
-    switch (fate) {
-        case legacy_hal::RX_PKT_FATE_SUCCESS:
-            return WifiDebugRxPacketFate::SUCCESS;
-        case legacy_hal::RX_PKT_FATE_FW_QUEUED:
-            return WifiDebugRxPacketFate::FW_QUEUED;
-        case legacy_hal::RX_PKT_FATE_FW_DROP_FILTER:
-            return WifiDebugRxPacketFate::FW_DROP_FILTER;
-        case legacy_hal::RX_PKT_FATE_FW_DROP_INVALID:
-            return WifiDebugRxPacketFate::FW_DROP_INVALID;
-        case legacy_hal::RX_PKT_FATE_FW_DROP_NOBUFS:
-            return WifiDebugRxPacketFate::FW_DROP_NOBUFS;
-        case legacy_hal::RX_PKT_FATE_FW_DROP_OTHER:
-            return WifiDebugRxPacketFate::FW_DROP_OTHER;
-        case legacy_hal::RX_PKT_FATE_DRV_QUEUED:
-            return WifiDebugRxPacketFate::DRV_QUEUED;
-        case legacy_hal::RX_PKT_FATE_DRV_DROP_FILTER:
-            return WifiDebugRxPacketFate::DRV_DROP_FILTER;
-        case legacy_hal::RX_PKT_FATE_DRV_DROP_INVALID:
-            return WifiDebugRxPacketFate::DRV_DROP_INVALID;
-        case legacy_hal::RX_PKT_FATE_DRV_DROP_NOBUFS:
-            return WifiDebugRxPacketFate::DRV_DROP_NOBUFS;
-        case legacy_hal::RX_PKT_FATE_DRV_DROP_OTHER:
-            return WifiDebugRxPacketFate::DRV_DROP_OTHER;
-    };
-    CHECK(false) << "Unknown legacy fate type: " << fate;
-}
-
-WifiDebugPacketFateFrameType convertLegacyDebugPacketFateFrameTypeToHidl(
-    legacy_hal::frame_type type) {
-    switch (type) {
-        case legacy_hal::FRAME_TYPE_UNKNOWN:
-            return WifiDebugPacketFateFrameType::UNKNOWN;
-        case legacy_hal::FRAME_TYPE_ETHERNET_II:
-            return WifiDebugPacketFateFrameType::ETHERNET_II;
-        case legacy_hal::FRAME_TYPE_80211_MGMT:
-            return WifiDebugPacketFateFrameType::MGMT_80211;
-    };
-    CHECK(false) << "Unknown legacy frame type: " << type;
-}
-
-bool convertLegacyDebugPacketFateFrameToHidl(
-    const legacy_hal::frame_info& legacy_frame,
-    WifiDebugPacketFateFrameInfo* hidl_frame) {
-    if (!hidl_frame) {
-        return false;
-    }
-    *hidl_frame = {};
-    hidl_frame->frameType =
-        convertLegacyDebugPacketFateFrameTypeToHidl(legacy_frame.payload_type);
-    hidl_frame->frameLen = legacy_frame.frame_len;
-    hidl_frame->driverTimestampUsec = legacy_frame.driver_timestamp_usec;
-    hidl_frame->firmwareTimestampUsec = legacy_frame.firmware_timestamp_usec;
-    const uint8_t* frame_begin = reinterpret_cast<const uint8_t*>(
-        legacy_frame.frame_content.ethernet_ii_bytes);
-    hidl_frame->frameContent =
-        std::vector<uint8_t>(frame_begin, frame_begin + legacy_frame.frame_len);
-    return true;
-}
-
-bool convertLegacyDebugTxPacketFateToHidl(
-    const legacy_hal::wifi_tx_report& legacy_fate,
-    WifiDebugTxPacketFateReport* hidl_fate) {
-    if (!hidl_fate) {
-        return false;
-    }
-    *hidl_fate = {};
-    hidl_fate->fate = convertLegacyDebugTxPacketFateToHidl(legacy_fate.fate);
-    return convertLegacyDebugPacketFateFrameToHidl(legacy_fate.frame_inf,
-                                                   &hidl_fate->frameInfo);
-}
-
-bool convertLegacyVectorOfDebugTxPacketFateToHidl(
-    const std::vector<legacy_hal::wifi_tx_report>& legacy_fates,
-    std::vector<WifiDebugTxPacketFateReport>* hidl_fates) {
-    if (!hidl_fates) {
-        return false;
-    }
-    *hidl_fates = {};
-    for (const auto& legacy_fate : legacy_fates) {
-        WifiDebugTxPacketFateReport hidl_fate;
-        if (!convertLegacyDebugTxPacketFateToHidl(legacy_fate, &hidl_fate)) {
-            return false;
-        }
-        hidl_fates->push_back(hidl_fate);
-    }
-    return true;
-}
-
-bool convertLegacyDebugRxPacketFateToHidl(
-    const legacy_hal::wifi_rx_report& legacy_fate,
-    WifiDebugRxPacketFateReport* hidl_fate) {
-    if (!hidl_fate) {
-        return false;
-    }
-    *hidl_fate = {};
-    hidl_fate->fate = convertLegacyDebugRxPacketFateToHidl(legacy_fate.fate);
-    return convertLegacyDebugPacketFateFrameToHidl(legacy_fate.frame_inf,
-                                                   &hidl_fate->frameInfo);
-}
-
-bool convertLegacyVectorOfDebugRxPacketFateToHidl(
-    const std::vector<legacy_hal::wifi_rx_report>& legacy_fates,
-    std::vector<WifiDebugRxPacketFateReport>* hidl_fates) {
-    if (!hidl_fates) {
-        return false;
-    }
-    *hidl_fates = {};
-    for (const auto& legacy_fate : legacy_fates) {
-        WifiDebugRxPacketFateReport hidl_fate;
-        if (!convertLegacyDebugRxPacketFateToHidl(legacy_fate, &hidl_fate)) {
-            return false;
-        }
-        hidl_fates->push_back(hidl_fate);
-    }
-    return true;
-}
-
-bool convertLegacyLinkLayerRadioStatsToHidl(
-    const legacy_hal::LinkLayerRadioStats& legacy_radio_stat,
-    V1_3::StaLinkLayerRadioStats* hidl_radio_stat) {
-    if (!hidl_radio_stat) {
-        return false;
-    }
-    *hidl_radio_stat = {};
-
-    hidl_radio_stat->V1_0.onTimeInMs = legacy_radio_stat.stats.on_time;
-    hidl_radio_stat->V1_0.txTimeInMs = legacy_radio_stat.stats.tx_time;
-    hidl_radio_stat->V1_0.rxTimeInMs = legacy_radio_stat.stats.rx_time;
-    hidl_radio_stat->V1_0.onTimeInMsForScan =
-        legacy_radio_stat.stats.on_time_scan;
-    hidl_radio_stat->V1_0.txTimeInMsPerLevel =
-        legacy_radio_stat.tx_time_per_levels;
-    hidl_radio_stat->onTimeInMsForNanScan = legacy_radio_stat.stats.on_time_nbd;
-    hidl_radio_stat->onTimeInMsForBgScan =
-        legacy_radio_stat.stats.on_time_gscan;
-    hidl_radio_stat->onTimeInMsForRoamScan =
-        legacy_radio_stat.stats.on_time_roam_scan;
-    hidl_radio_stat->onTimeInMsForPnoScan =
-        legacy_radio_stat.stats.on_time_pno_scan;
-    hidl_radio_stat->onTimeInMsForHs20Scan =
-        legacy_radio_stat.stats.on_time_hs20;
-
-    std::vector<V1_3::WifiChannelStats> hidl_channel_stats;
-
-    for (const auto& channel_stat : legacy_radio_stat.channel_stats) {
-        V1_3::WifiChannelStats hidl_channel_stat;
-        hidl_channel_stat.onTimeInMs = channel_stat.on_time;
-        hidl_channel_stat.ccaBusyTimeInMs = channel_stat.cca_busy_time;
-        /*
-         * TODO once b/119142899 is fixed,
-         * replace below code with convertLegacyWifiChannelInfoToHidl()
-         */
-        hidl_channel_stat.channel.width = WifiChannelWidthInMhz::WIDTH_20;
-        hidl_channel_stat.channel.centerFreq = channel_stat.channel.center_freq;
-        hidl_channel_stat.channel.centerFreq0 =
-            channel_stat.channel.center_freq0;
-        hidl_channel_stat.channel.centerFreq1 =
-            channel_stat.channel.center_freq1;
-        hidl_channel_stats.push_back(hidl_channel_stat);
-    }
-
-    hidl_radio_stat->channelStats = hidl_channel_stats;
-
-    return true;
-}
-
-bool convertLegacyLinkLayerStatsToHidl(
-    const legacy_hal::LinkLayerStats& legacy_stats,
-    V1_3::StaLinkLayerStats* hidl_stats) {
-    if (!hidl_stats) {
-        return false;
-    }
-    *hidl_stats = {};
-    // iface legacy_stats conversion.
-    hidl_stats->iface.beaconRx = legacy_stats.iface.beacon_rx;
-    hidl_stats->iface.avgRssiMgmt = legacy_stats.iface.rssi_mgmt;
-    hidl_stats->iface.wmeBePktStats.rxMpdu =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].rx_mpdu;
-    hidl_stats->iface.wmeBePktStats.txMpdu =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].tx_mpdu;
-    hidl_stats->iface.wmeBePktStats.lostMpdu =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].mpdu_lost;
-    hidl_stats->iface.wmeBePktStats.retries =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].retries;
-    hidl_stats->iface.wmeBkPktStats.rxMpdu =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].rx_mpdu;
-    hidl_stats->iface.wmeBkPktStats.txMpdu =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].tx_mpdu;
-    hidl_stats->iface.wmeBkPktStats.lostMpdu =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].mpdu_lost;
-    hidl_stats->iface.wmeBkPktStats.retries =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].retries;
-    hidl_stats->iface.wmeViPktStats.rxMpdu =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].rx_mpdu;
-    hidl_stats->iface.wmeViPktStats.txMpdu =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].tx_mpdu;
-    hidl_stats->iface.wmeViPktStats.lostMpdu =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].mpdu_lost;
-    hidl_stats->iface.wmeViPktStats.retries =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].retries;
-    hidl_stats->iface.wmeVoPktStats.rxMpdu =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].rx_mpdu;
-    hidl_stats->iface.wmeVoPktStats.txMpdu =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].tx_mpdu;
-    hidl_stats->iface.wmeVoPktStats.lostMpdu =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].mpdu_lost;
-    hidl_stats->iface.wmeVoPktStats.retries =
-        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].retries;
-    // radio legacy_stats conversion.
-    std::vector<V1_3::StaLinkLayerRadioStats> hidl_radios_stats;
-    for (const auto& legacy_radio_stats : legacy_stats.radios) {
-        V1_3::StaLinkLayerRadioStats hidl_radio_stats;
-        if (!convertLegacyLinkLayerRadioStatsToHidl(legacy_radio_stats,
-                                                    &hidl_radio_stats)) {
-            return false;
-        }
-        hidl_radios_stats.push_back(hidl_radio_stats);
-    }
-    hidl_stats->radios = hidl_radios_stats;
-    // Timestamp in the HAL wrapper here since it's not provided in the legacy
-    // HAL API.
-    hidl_stats->timeStampInMs = uptimeMillis();
-    return true;
-}
-
-bool convertLegacyRoamingCapabilitiesToHidl(
-    const legacy_hal::wifi_roaming_capabilities& legacy_caps,
-    StaRoamingCapabilities* hidl_caps) {
-    if (!hidl_caps) {
-        return false;
-    }
-    *hidl_caps = {};
-    hidl_caps->maxBlacklistSize = legacy_caps.max_blacklist_size;
-    hidl_caps->maxWhitelistSize = legacy_caps.max_whitelist_size;
-    return true;
-}
-
-bool convertHidlRoamingConfigToLegacy(
-    const StaRoamingConfig& hidl_config,
-    legacy_hal::wifi_roaming_config* legacy_config) {
-    if (!legacy_config) {
-        return false;
-    }
-    *legacy_config = {};
-    if (hidl_config.bssidBlacklist.size() > MAX_BLACKLIST_BSSID ||
-        hidl_config.ssidWhitelist.size() > MAX_WHITELIST_SSID) {
-        return false;
-    }
-    legacy_config->num_blacklist_bssid = hidl_config.bssidBlacklist.size();
-    uint32_t i = 0;
-    for (const auto& bssid : hidl_config.bssidBlacklist) {
-        CHECK(bssid.size() == sizeof(legacy_hal::mac_addr));
-        memcpy(legacy_config->blacklist_bssid[i++], bssid.data(), bssid.size());
-    }
-    legacy_config->num_whitelist_ssid = hidl_config.ssidWhitelist.size();
-    i = 0;
-    for (const auto& ssid : hidl_config.ssidWhitelist) {
-        CHECK(ssid.size() <= sizeof(legacy_hal::ssid_t::ssid_str));
-        legacy_config->whitelist_ssid[i].length = ssid.size();
-        memcpy(legacy_config->whitelist_ssid[i].ssid_str, ssid.data(),
-               ssid.size());
-        i++;
-    }
-    return true;
-}
-
-legacy_hal::fw_roaming_state_t convertHidlRoamingStateToLegacy(
-    StaRoamingState state) {
-    switch (state) {
-        case StaRoamingState::ENABLED:
-            return legacy_hal::ROAMING_ENABLE;
-        case StaRoamingState::DISABLED:
-            return legacy_hal::ROAMING_DISABLE;
-    };
-    CHECK(false);
-}
-
-legacy_hal::NanMatchAlg convertHidlNanMatchAlgToLegacy(NanMatchAlg type) {
-    switch (type) {
-        case NanMatchAlg::MATCH_ONCE:
-            return legacy_hal::NAN_MATCH_ALG_MATCH_ONCE;
-        case NanMatchAlg::MATCH_CONTINUOUS:
-            return legacy_hal::NAN_MATCH_ALG_MATCH_CONTINUOUS;
-        case NanMatchAlg::MATCH_NEVER:
-            return legacy_hal::NAN_MATCH_ALG_MATCH_NEVER;
-    }
-    CHECK(false);
-}
-
-legacy_hal::NanPublishType convertHidlNanPublishTypeToLegacy(
-    NanPublishType type) {
-    switch (type) {
-        case NanPublishType::UNSOLICITED:
-            return legacy_hal::NAN_PUBLISH_TYPE_UNSOLICITED;
-        case NanPublishType::SOLICITED:
-            return legacy_hal::NAN_PUBLISH_TYPE_SOLICITED;
-        case NanPublishType::UNSOLICITED_SOLICITED:
-            return legacy_hal::NAN_PUBLISH_TYPE_UNSOLICITED_SOLICITED;
-    }
-    CHECK(false);
-}
-
-legacy_hal::NanTxType convertHidlNanTxTypeToLegacy(NanTxType type) {
-    switch (type) {
-        case NanTxType::BROADCAST:
-            return legacy_hal::NAN_TX_TYPE_BROADCAST;
-        case NanTxType::UNICAST:
-            return legacy_hal::NAN_TX_TYPE_UNICAST;
-    }
-    CHECK(false);
-}
-
-legacy_hal::NanSubscribeType convertHidlNanSubscribeTypeToLegacy(
-    NanSubscribeType type) {
-    switch (type) {
-        case NanSubscribeType::PASSIVE:
-            return legacy_hal::NAN_SUBSCRIBE_TYPE_PASSIVE;
-        case NanSubscribeType::ACTIVE:
-            return legacy_hal::NAN_SUBSCRIBE_TYPE_ACTIVE;
-    }
-    CHECK(false);
-}
-
-legacy_hal::NanSRFType convertHidlNanSrfTypeToLegacy(NanSrfType type) {
-    switch (type) {
-        case NanSrfType::BLOOM_FILTER:
-            return legacy_hal::NAN_SRF_ATTR_BLOOM_FILTER;
-        case NanSrfType::PARTIAL_MAC_ADDR:
-            return legacy_hal::NAN_SRF_ATTR_PARTIAL_MAC_ADDR;
-    }
-    CHECK(false);
-}
-
-legacy_hal::NanDataPathChannelCfg convertHidlNanDataPathChannelCfgToLegacy(
-    NanDataPathChannelCfg type) {
-    switch (type) {
-        case NanDataPathChannelCfg::CHANNEL_NOT_REQUESTED:
-            return legacy_hal::NAN_DP_CHANNEL_NOT_REQUESTED;
-        case NanDataPathChannelCfg::REQUEST_CHANNEL_SETUP:
-            return legacy_hal::NAN_DP_REQUEST_CHANNEL_SETUP;
-        case NanDataPathChannelCfg::FORCE_CHANNEL_SETUP:
-            return legacy_hal::NAN_DP_FORCE_CHANNEL_SETUP;
-    }
-    CHECK(false);
-}
-
-NanStatusType convertLegacyNanStatusTypeToHidl(legacy_hal::NanStatusType type) {
-    switch (type) {
-        case legacy_hal::NAN_STATUS_SUCCESS:
-            return NanStatusType::SUCCESS;
-        case legacy_hal::NAN_STATUS_INTERNAL_FAILURE:
-            return NanStatusType::INTERNAL_FAILURE;
-        case legacy_hal::NAN_STATUS_PROTOCOL_FAILURE:
-            return NanStatusType::PROTOCOL_FAILURE;
-        case legacy_hal::NAN_STATUS_INVALID_PUBLISH_SUBSCRIBE_ID:
-            return NanStatusType::INVALID_SESSION_ID;
-        case legacy_hal::NAN_STATUS_NO_RESOURCE_AVAILABLE:
-            return NanStatusType::NO_RESOURCES_AVAILABLE;
-        case legacy_hal::NAN_STATUS_INVALID_PARAM:
-            return NanStatusType::INVALID_ARGS;
-        case legacy_hal::NAN_STATUS_INVALID_REQUESTOR_INSTANCE_ID:
-            return NanStatusType::INVALID_PEER_ID;
-        case legacy_hal::NAN_STATUS_INVALID_NDP_ID:
-            return NanStatusType::INVALID_NDP_ID;
-        case legacy_hal::NAN_STATUS_NAN_NOT_ALLOWED:
-            return NanStatusType::NAN_NOT_ALLOWED;
-        case legacy_hal::NAN_STATUS_NO_OTA_ACK:
-            return NanStatusType::NO_OTA_ACK;
-        case legacy_hal::NAN_STATUS_ALREADY_ENABLED:
-            return NanStatusType::ALREADY_ENABLED;
-        case legacy_hal::NAN_STATUS_FOLLOWUP_QUEUE_FULL:
-            return NanStatusType::FOLLOWUP_TX_QUEUE_FULL;
-        case legacy_hal::NAN_STATUS_UNSUPPORTED_CONCURRENCY_NAN_DISABLED:
-            return NanStatusType::UNSUPPORTED_CONCURRENCY_NAN_DISABLED;
-    }
-    CHECK(false);
-}
-
-void convertToWifiNanStatus(legacy_hal::NanStatusType type, const char* str,
-                            size_t max_len, WifiNanStatus* wifiNanStatus) {
-    wifiNanStatus->status = convertLegacyNanStatusTypeToHidl(type);
-    wifiNanStatus->description = safeConvertChar(str, max_len);
-}
-
-bool convertHidlNanEnableRequestToLegacy(
-    const NanEnableRequest& hidl_request,
-    legacy_hal::NanEnableRequest* legacy_request) {
-    if (!legacy_request) {
-        LOG(ERROR)
-            << "convertHidlNanEnableRequestToLegacy: null legacy_request";
-        return false;
-    }
-    *legacy_request = {};
-
-    legacy_request->config_2dot4g_support = 1;
-    legacy_request->support_2dot4g_val =
-        hidl_request.operateInBand[(size_t)NanBandIndex::NAN_BAND_24GHZ];
-    legacy_request->config_support_5g = 1;
-    legacy_request->support_5g_val =
-        hidl_request.operateInBand[(size_t)NanBandIndex::NAN_BAND_5GHZ];
-    legacy_request->config_hop_count_limit = 1;
-    legacy_request->hop_count_limit_val = hidl_request.hopCountMax;
-    legacy_request->master_pref = hidl_request.configParams.masterPref;
-    legacy_request->discovery_indication_cfg = 0;
-    legacy_request->discovery_indication_cfg |=
-        hidl_request.configParams.disableDiscoveryAddressChangeIndication ? 0x1
-                                                                          : 0x0;
-    legacy_request->discovery_indication_cfg |=
-        hidl_request.configParams.disableStartedClusterIndication ? 0x2 : 0x0;
-    legacy_request->discovery_indication_cfg |=
-        hidl_request.configParams.disableJoinedClusterIndication ? 0x4 : 0x0;
-    legacy_request->config_sid_beacon = 1;
-    if (hidl_request.configParams.numberOfPublishServiceIdsInBeacon > 127) {
-        LOG(ERROR) << "convertHidlNanEnableRequestToLegacy: "
-                      "numberOfPublishServiceIdsInBeacon > 127";
-        return false;
-    }
-    legacy_request->sid_beacon_val =
-        (hidl_request.configParams.includePublishServiceIdsInBeacon ? 0x1
-                                                                    : 0x0) |
-        (hidl_request.configParams.numberOfPublishServiceIdsInBeacon << 1);
-    legacy_request->config_subscribe_sid_beacon = 1;
-    if (hidl_request.configParams.numberOfSubscribeServiceIdsInBeacon > 127) {
-        LOG(ERROR) << "convertHidlNanEnableRequestToLegacy: "
-                      "numberOfSubscribeServiceIdsInBeacon > 127";
-        return false;
-    }
-    legacy_request->subscribe_sid_beacon_val =
-        (hidl_request.configParams.includeSubscribeServiceIdsInBeacon ? 0x1
-                                                                      : 0x0) |
-        (hidl_request.configParams.numberOfSubscribeServiceIdsInBeacon << 1);
-    legacy_request->config_rssi_window_size = 1;
-    legacy_request->rssi_window_size_val =
-        hidl_request.configParams.rssiWindowSize;
-    legacy_request->config_disc_mac_addr_randomization = 1;
-    legacy_request->disc_mac_addr_rand_interval_sec =
-        hidl_request.configParams.macAddressRandomizationIntervalSec;
-    legacy_request->config_2dot4g_rssi_close = 1;
-    if (hidl_request.configParams.bandSpecificConfig.size() != 2) {
-        LOG(ERROR) << "convertHidlNanEnableRequestToLegacy: "
-                      "bandSpecificConfig.size() != 2";
-        return false;
-    }
-    legacy_request->rssi_close_2dot4g_val =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
-            .rssiClose;
-    legacy_request->config_2dot4g_rssi_middle = 1;
-    legacy_request->rssi_middle_2dot4g_val =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
-            .rssiMiddle;
-    legacy_request->config_2dot4g_rssi_proximity = 1;
-    legacy_request->rssi_proximity_2dot4g_val =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
-            .rssiCloseProximity;
-    legacy_request->config_scan_params = 1;
-    legacy_request->scan_params_val
-        .dwell_time[legacy_hal::NAN_CHANNEL_24G_BAND] =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
-            .dwellTimeMs;
-    legacy_request->scan_params_val
-        .scan_period[legacy_hal::NAN_CHANNEL_24G_BAND] =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
-            .scanPeriodSec;
-    legacy_request->config_dw.config_2dot4g_dw_band =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
-            .validDiscoveryWindowIntervalVal;
-    legacy_request->config_dw.dw_2dot4g_interval_val =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
-            .discoveryWindowIntervalVal;
-    legacy_request->config_5g_rssi_close = 1;
-    legacy_request->rssi_close_5g_val =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .rssiClose;
-    legacy_request->config_5g_rssi_middle = 1;
-    legacy_request->rssi_middle_5g_val =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .rssiMiddle;
-    legacy_request->config_5g_rssi_close_proximity = 1;
-    legacy_request->rssi_close_proximity_5g_val =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .rssiCloseProximity;
-    legacy_request->scan_params_val
-        .dwell_time[legacy_hal::NAN_CHANNEL_5G_BAND_LOW] =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .dwellTimeMs;
-    legacy_request->scan_params_val
-        .scan_period[legacy_hal::NAN_CHANNEL_5G_BAND_LOW] =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .scanPeriodSec;
-    legacy_request->scan_params_val
-        .dwell_time[legacy_hal::NAN_CHANNEL_5G_BAND_HIGH] =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .dwellTimeMs;
-    legacy_request->scan_params_val
-        .scan_period[legacy_hal::NAN_CHANNEL_5G_BAND_HIGH] =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .scanPeriodSec;
-    legacy_request->config_dw.config_5g_dw_band =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .validDiscoveryWindowIntervalVal;
-    legacy_request->config_dw.dw_5g_interval_val =
-        hidl_request.configParams
-            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .discoveryWindowIntervalVal;
-    if (hidl_request.debugConfigs.validClusterIdVals) {
-        legacy_request->cluster_low =
-            hidl_request.debugConfigs.clusterIdBottomRangeVal;
-        legacy_request->cluster_high =
-            hidl_request.debugConfigs.clusterIdTopRangeVal;
-    } else {  // need 'else' since not configurable in legacy HAL
-        legacy_request->cluster_low = 0x0000;
-        legacy_request->cluster_high = 0xFFFF;
-    }
-    legacy_request->config_intf_addr =
-        hidl_request.debugConfigs.validIntfAddrVal;
-    memcpy(legacy_request->intf_addr_val,
-           hidl_request.debugConfigs.intfAddrVal.data(), 6);
-    legacy_request->config_oui = hidl_request.debugConfigs.validOuiVal;
-    legacy_request->oui_val = hidl_request.debugConfigs.ouiVal;
-    legacy_request->config_random_factor_force =
-        hidl_request.debugConfigs.validRandomFactorForceVal;
-    legacy_request->random_factor_force_val =
-        hidl_request.debugConfigs.randomFactorForceVal;
-    legacy_request->config_hop_count_force =
-        hidl_request.debugConfigs.validHopCountForceVal;
-    legacy_request->hop_count_force_val =
-        hidl_request.debugConfigs.hopCountForceVal;
-    legacy_request->config_24g_channel =
-        hidl_request.debugConfigs.validDiscoveryChannelVal;
-    legacy_request->channel_24g_val =
-        hidl_request.debugConfigs
-            .discoveryChannelMhzVal[(size_t)NanBandIndex::NAN_BAND_24GHZ];
-    legacy_request->config_5g_channel =
-        hidl_request.debugConfigs.validDiscoveryChannelVal;
-    legacy_request->channel_5g_val =
-        hidl_request.debugConfigs
-            .discoveryChannelMhzVal[(size_t)NanBandIndex::NAN_BAND_5GHZ];
-    legacy_request->config_2dot4g_beacons =
-        hidl_request.debugConfigs.validUseBeaconsInBandVal;
-    legacy_request->beacon_2dot4g_val =
-        hidl_request.debugConfigs
-            .useBeaconsInBandVal[(size_t)NanBandIndex::NAN_BAND_24GHZ];
-    legacy_request->config_5g_beacons =
-        hidl_request.debugConfigs.validUseBeaconsInBandVal;
-    legacy_request->beacon_5g_val =
-        hidl_request.debugConfigs
-            .useBeaconsInBandVal[(size_t)NanBandIndex::NAN_BAND_5GHZ];
-    legacy_request->config_2dot4g_sdf =
-        hidl_request.debugConfigs.validUseSdfInBandVal;
-    legacy_request->sdf_2dot4g_val =
-        hidl_request.debugConfigs
-            .useSdfInBandVal[(size_t)NanBandIndex::NAN_BAND_24GHZ];
-    legacy_request->config_5g_sdf =
-        hidl_request.debugConfigs.validUseSdfInBandVal;
-    legacy_request->sdf_5g_val =
-        hidl_request.debugConfigs
-            .useSdfInBandVal[(size_t)NanBandIndex::NAN_BAND_5GHZ];
-
-    return true;
-}
-
-bool convertHidlNanEnableRequest_1_2ToLegacy(
-    const NanEnableRequest& hidl_request1,
-    const V1_2::NanConfigRequestSupplemental& hidl_request2,
-    legacy_hal::NanEnableRequest* legacy_request) {
-    if (!legacy_request) {
-        LOG(ERROR)
-            << "convertHidlNanEnableRequest_1_2ToLegacy: null legacy_request";
-        return false;
-    }
-
-    *legacy_request = {};
-    if (!convertHidlNanEnableRequestToLegacy(hidl_request1, legacy_request)) {
-        return false;
-    }
-
-    legacy_request->config_discovery_beacon_int = 1;
-    legacy_request->discovery_beacon_interval =
-        hidl_request2.discoveryBeaconIntervalMs;
-    legacy_request->config_nss = 1;
-    legacy_request->nss = hidl_request2.numberOfSpatialStreamsInDiscovery;
-    legacy_request->config_dw_early_termination = 1;
-    legacy_request->enable_dw_termination =
-        hidl_request2.enableDiscoveryWindowEarlyTermination;
-    legacy_request->config_enable_ranging = 1;
-    legacy_request->enable_ranging = hidl_request2.enableRanging;
-
-    return true;
-}
-
-bool convertHidlNanPublishRequestToLegacy(
-    const NanPublishRequest& hidl_request,
-    legacy_hal::NanPublishRequest* legacy_request) {
-    if (!legacy_request) {
-        LOG(ERROR)
-            << "convertHidlNanPublishRequestToLegacy: null legacy_request";
-        return false;
-    }
-    *legacy_request = {};
-
-    legacy_request->publish_id = hidl_request.baseConfigs.sessionId;
-    legacy_request->ttl = hidl_request.baseConfigs.ttlSec;
-    legacy_request->period = hidl_request.baseConfigs.discoveryWindowPeriod;
-    legacy_request->publish_count = hidl_request.baseConfigs.discoveryCount;
-    legacy_request->service_name_len =
-        hidl_request.baseConfigs.serviceName.size();
-    if (legacy_request->service_name_len > NAN_MAX_SERVICE_NAME_LEN) {
-        LOG(ERROR) << "convertHidlNanPublishRequestToLegacy: service_name_len "
-                      "too large";
-        return false;
-    }
-    memcpy(legacy_request->service_name,
-           hidl_request.baseConfigs.serviceName.data(),
-           legacy_request->service_name_len);
-    legacy_request->publish_match_indicator = convertHidlNanMatchAlgToLegacy(
-        hidl_request.baseConfigs.discoveryMatchIndicator);
-    legacy_request->service_specific_info_len =
-        hidl_request.baseConfigs.serviceSpecificInfo.size();
-    if (legacy_request->service_specific_info_len >
-        NAN_MAX_SERVICE_SPECIFIC_INFO_LEN) {
-        LOG(ERROR) << "convertHidlNanPublishRequestToLegacy: "
-                      "service_specific_info_len too large";
-        return false;
-    }
-    memcpy(legacy_request->service_specific_info,
-           hidl_request.baseConfigs.serviceSpecificInfo.data(),
-           legacy_request->service_specific_info_len);
-    legacy_request->sdea_service_specific_info_len =
-        hidl_request.baseConfigs.extendedServiceSpecificInfo.size();
-    if (legacy_request->sdea_service_specific_info_len >
-        NAN_MAX_SDEA_SERVICE_SPECIFIC_INFO_LEN) {
-        LOG(ERROR) << "convertHidlNanPublishRequestToLegacy: "
-                      "sdea_service_specific_info_len too large";
-        return false;
-    }
-    memcpy(legacy_request->sdea_service_specific_info,
-           hidl_request.baseConfigs.extendedServiceSpecificInfo.data(),
-           legacy_request->sdea_service_specific_info_len);
-    legacy_request->rx_match_filter_len =
-        hidl_request.baseConfigs.rxMatchFilter.size();
-    if (legacy_request->rx_match_filter_len > NAN_MAX_MATCH_FILTER_LEN) {
-        LOG(ERROR) << "convertHidlNanPublishRequestToLegacy: "
-                      "rx_match_filter_len too large";
-        return false;
-    }
-    memcpy(legacy_request->rx_match_filter,
-           hidl_request.baseConfigs.rxMatchFilter.data(),
-           legacy_request->rx_match_filter_len);
-    legacy_request->tx_match_filter_len =
-        hidl_request.baseConfigs.txMatchFilter.size();
-    if (legacy_request->tx_match_filter_len > NAN_MAX_MATCH_FILTER_LEN) {
-        LOG(ERROR) << "convertHidlNanPublishRequestToLegacy: "
-                      "tx_match_filter_len too large";
-        return false;
-    }
-    memcpy(legacy_request->tx_match_filter,
-           hidl_request.baseConfigs.txMatchFilter.data(),
-           legacy_request->tx_match_filter_len);
-    legacy_request->rssi_threshold_flag =
-        hidl_request.baseConfigs.useRssiThreshold;
-    legacy_request->recv_indication_cfg = 0;
-    legacy_request->recv_indication_cfg |=
-        hidl_request.baseConfigs.disableDiscoveryTerminationIndication ? 0x1
-                                                                       : 0x0;
-    legacy_request->recv_indication_cfg |=
-        hidl_request.baseConfigs.disableMatchExpirationIndication ? 0x2 : 0x0;
-    legacy_request->recv_indication_cfg |=
-        hidl_request.baseConfigs.disableFollowupReceivedIndication ? 0x4 : 0x0;
-    legacy_request->recv_indication_cfg |= 0x8;
-    legacy_request->cipher_type =
-        (unsigned int)hidl_request.baseConfigs.securityConfig.cipherType;
-    if (hidl_request.baseConfigs.securityConfig.securityType ==
-        NanDataPathSecurityType::PMK) {
-        legacy_request->key_info.key_type =
-            legacy_hal::NAN_SECURITY_KEY_INPUT_PMK;
-        legacy_request->key_info.body.pmk_info.pmk_len =
-            hidl_request.baseConfigs.securityConfig.pmk.size();
-        if (legacy_request->key_info.body.pmk_info.pmk_len !=
-            NAN_PMK_INFO_LEN) {
-            LOG(ERROR)
-                << "convertHidlNanPublishRequestToLegacy: invalid pmk_len";
-            return false;
-        }
-        memcpy(legacy_request->key_info.body.pmk_info.pmk,
-               hidl_request.baseConfigs.securityConfig.pmk.data(),
-               legacy_request->key_info.body.pmk_info.pmk_len);
-    }
-    if (hidl_request.baseConfigs.securityConfig.securityType ==
-        NanDataPathSecurityType::PASSPHRASE) {
-        legacy_request->key_info.key_type =
-            legacy_hal::NAN_SECURITY_KEY_INPUT_PASSPHRASE;
-        legacy_request->key_info.body.passphrase_info.passphrase_len =
-            hidl_request.baseConfigs.securityConfig.passphrase.size();
-        if (legacy_request->key_info.body.passphrase_info.passphrase_len <
-            NAN_SECURITY_MIN_PASSPHRASE_LEN) {
-            LOG(ERROR) << "convertHidlNanPublishRequestToLegacy: "
-                          "passphrase_len too small";
-            return false;
-        }
-        if (legacy_request->key_info.body.passphrase_info.passphrase_len >
-            NAN_SECURITY_MAX_PASSPHRASE_LEN) {
-            LOG(ERROR) << "convertHidlNanPublishRequestToLegacy: "
-                          "passphrase_len too large";
-            return false;
-        }
-        memcpy(legacy_request->key_info.body.passphrase_info.passphrase,
-               hidl_request.baseConfigs.securityConfig.passphrase.data(),
-               legacy_request->key_info.body.passphrase_info.passphrase_len);
-    }
-    legacy_request->sdea_params.security_cfg =
-        (hidl_request.baseConfigs.securityConfig.securityType !=
-         NanDataPathSecurityType::OPEN)
-            ? legacy_hal::NAN_DP_CONFIG_SECURITY
-            : legacy_hal::NAN_DP_CONFIG_NO_SECURITY;
-    legacy_request->sdea_params.ranging_state =
-        hidl_request.baseConfigs.rangingRequired
-            ? legacy_hal::NAN_RANGING_ENABLE
-            : legacy_hal::NAN_RANGING_DISABLE;
-    legacy_request->ranging_cfg.ranging_interval_msec =
-        hidl_request.baseConfigs.rangingIntervalMsec;
-    legacy_request->ranging_cfg.config_ranging_indications =
-        hidl_request.baseConfigs.configRangingIndications;
-    legacy_request->ranging_cfg.distance_ingress_mm =
-        hidl_request.baseConfigs.distanceIngressCm * 10;
-    legacy_request->ranging_cfg.distance_egress_mm =
-        hidl_request.baseConfigs.distanceEgressCm * 10;
-    legacy_request->ranging_auto_response =
-        hidl_request.baseConfigs.rangingRequired
-            ? legacy_hal::NAN_RANGING_AUTO_RESPONSE_ENABLE
-            : legacy_hal::NAN_RANGING_AUTO_RESPONSE_DISABLE;
-    legacy_request->sdea_params.range_report =
-        legacy_hal::NAN_DISABLE_RANGE_REPORT;
-    legacy_request->publish_type =
-        convertHidlNanPublishTypeToLegacy(hidl_request.publishType);
-    legacy_request->tx_type = convertHidlNanTxTypeToLegacy(hidl_request.txType);
-    legacy_request->service_responder_policy =
-        hidl_request.autoAcceptDataPathRequests
-            ? legacy_hal::NAN_SERVICE_ACCEPT_POLICY_ALL
-            : legacy_hal::NAN_SERVICE_ACCEPT_POLICY_NONE;
-
-    return true;
-}
-
-bool convertHidlNanSubscribeRequestToLegacy(
-    const NanSubscribeRequest& hidl_request,
-    legacy_hal::NanSubscribeRequest* legacy_request) {
-    if (!legacy_request) {
-        LOG(ERROR)
-            << "convertHidlNanSubscribeRequestToLegacy: legacy_request is null";
-        return false;
-    }
-    *legacy_request = {};
-
-    legacy_request->subscribe_id = hidl_request.baseConfigs.sessionId;
-    legacy_request->ttl = hidl_request.baseConfigs.ttlSec;
-    legacy_request->period = hidl_request.baseConfigs.discoveryWindowPeriod;
-    legacy_request->subscribe_count = hidl_request.baseConfigs.discoveryCount;
-    legacy_request->service_name_len =
-        hidl_request.baseConfigs.serviceName.size();
-    if (legacy_request->service_name_len > NAN_MAX_SERVICE_NAME_LEN) {
-        LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
-                      "service_name_len too large";
-        return false;
-    }
-    memcpy(legacy_request->service_name,
-           hidl_request.baseConfigs.serviceName.data(),
-           legacy_request->service_name_len);
-    legacy_request->subscribe_match_indicator = convertHidlNanMatchAlgToLegacy(
-        hidl_request.baseConfigs.discoveryMatchIndicator);
-    legacy_request->service_specific_info_len =
-        hidl_request.baseConfigs.serviceSpecificInfo.size();
-    if (legacy_request->service_specific_info_len >
-        NAN_MAX_SERVICE_SPECIFIC_INFO_LEN) {
-        LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
-                      "service_specific_info_len too large";
-        return false;
-    }
-    memcpy(legacy_request->service_specific_info,
-           hidl_request.baseConfigs.serviceSpecificInfo.data(),
-           legacy_request->service_specific_info_len);
-    legacy_request->sdea_service_specific_info_len =
-        hidl_request.baseConfigs.extendedServiceSpecificInfo.size();
-    if (legacy_request->sdea_service_specific_info_len >
-        NAN_MAX_SDEA_SERVICE_SPECIFIC_INFO_LEN) {
-        LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
-                      "sdea_service_specific_info_len too large";
-        return false;
-    }
-    memcpy(legacy_request->sdea_service_specific_info,
-           hidl_request.baseConfigs.extendedServiceSpecificInfo.data(),
-           legacy_request->sdea_service_specific_info_len);
-    legacy_request->rx_match_filter_len =
-        hidl_request.baseConfigs.rxMatchFilter.size();
-    if (legacy_request->rx_match_filter_len > NAN_MAX_MATCH_FILTER_LEN) {
-        LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
-                      "rx_match_filter_len too large";
-        return false;
-    }
-    memcpy(legacy_request->rx_match_filter,
-           hidl_request.baseConfigs.rxMatchFilter.data(),
-           legacy_request->rx_match_filter_len);
-    legacy_request->tx_match_filter_len =
-        hidl_request.baseConfigs.txMatchFilter.size();
-    if (legacy_request->tx_match_filter_len > NAN_MAX_MATCH_FILTER_LEN) {
-        LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
-                      "tx_match_filter_len too large";
-        return false;
-    }
-    memcpy(legacy_request->tx_match_filter,
-           hidl_request.baseConfigs.txMatchFilter.data(),
-           legacy_request->tx_match_filter_len);
-    legacy_request->rssi_threshold_flag =
-        hidl_request.baseConfigs.useRssiThreshold;
-    legacy_request->recv_indication_cfg = 0;
-    legacy_request->recv_indication_cfg |=
-        hidl_request.baseConfigs.disableDiscoveryTerminationIndication ? 0x1
-                                                                       : 0x0;
-    legacy_request->recv_indication_cfg |=
-        hidl_request.baseConfigs.disableMatchExpirationIndication ? 0x2 : 0x0;
-    legacy_request->recv_indication_cfg |=
-        hidl_request.baseConfigs.disableFollowupReceivedIndication ? 0x4 : 0x0;
-    legacy_request->cipher_type =
-        (unsigned int)hidl_request.baseConfigs.securityConfig.cipherType;
-    if (hidl_request.baseConfigs.securityConfig.securityType ==
-        NanDataPathSecurityType::PMK) {
-        legacy_request->key_info.key_type =
-            legacy_hal::NAN_SECURITY_KEY_INPUT_PMK;
-        legacy_request->key_info.body.pmk_info.pmk_len =
-            hidl_request.baseConfigs.securityConfig.pmk.size();
-        if (legacy_request->key_info.body.pmk_info.pmk_len !=
-            NAN_PMK_INFO_LEN) {
-            LOG(ERROR)
-                << "convertHidlNanSubscribeRequestToLegacy: invalid pmk_len";
-            return false;
-        }
-        memcpy(legacy_request->key_info.body.pmk_info.pmk,
-               hidl_request.baseConfigs.securityConfig.pmk.data(),
-               legacy_request->key_info.body.pmk_info.pmk_len);
-    }
-    if (hidl_request.baseConfigs.securityConfig.securityType ==
-        NanDataPathSecurityType::PASSPHRASE) {
-        legacy_request->key_info.key_type =
-            legacy_hal::NAN_SECURITY_KEY_INPUT_PASSPHRASE;
-        legacy_request->key_info.body.passphrase_info.passphrase_len =
-            hidl_request.baseConfigs.securityConfig.passphrase.size();
-        if (legacy_request->key_info.body.passphrase_info.passphrase_len <
-            NAN_SECURITY_MIN_PASSPHRASE_LEN) {
-            LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
-                          "passphrase_len too small";
-            return false;
-        }
-        if (legacy_request->key_info.body.passphrase_info.passphrase_len >
-            NAN_SECURITY_MAX_PASSPHRASE_LEN) {
-            LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
-                          "passphrase_len too large";
-            return false;
-        }
-        memcpy(legacy_request->key_info.body.passphrase_info.passphrase,
-               hidl_request.baseConfigs.securityConfig.passphrase.data(),
-               legacy_request->key_info.body.passphrase_info.passphrase_len);
-    }
-    legacy_request->sdea_params.security_cfg =
-        (hidl_request.baseConfigs.securityConfig.securityType !=
-         NanDataPathSecurityType::OPEN)
-            ? legacy_hal::NAN_DP_CONFIG_SECURITY
-            : legacy_hal::NAN_DP_CONFIG_NO_SECURITY;
-    legacy_request->sdea_params.ranging_state =
-        hidl_request.baseConfigs.rangingRequired
-            ? legacy_hal::NAN_RANGING_ENABLE
-            : legacy_hal::NAN_RANGING_DISABLE;
-    legacy_request->ranging_cfg.ranging_interval_msec =
-        hidl_request.baseConfigs.rangingIntervalMsec;
-    legacy_request->ranging_cfg.config_ranging_indications =
-        hidl_request.baseConfigs.configRangingIndications;
-    legacy_request->ranging_cfg.distance_ingress_mm =
-        hidl_request.baseConfigs.distanceIngressCm * 10;
-    legacy_request->ranging_cfg.distance_egress_mm =
-        hidl_request.baseConfigs.distanceEgressCm * 10;
-    legacy_request->ranging_auto_response =
-        hidl_request.baseConfigs.rangingRequired
-            ? legacy_hal::NAN_RANGING_AUTO_RESPONSE_ENABLE
-            : legacy_hal::NAN_RANGING_AUTO_RESPONSE_DISABLE;
-    legacy_request->sdea_params.range_report =
-        legacy_hal::NAN_DISABLE_RANGE_REPORT;
-    legacy_request->subscribe_type =
-        convertHidlNanSubscribeTypeToLegacy(hidl_request.subscribeType);
-    legacy_request->serviceResponseFilter =
-        convertHidlNanSrfTypeToLegacy(hidl_request.srfType);
-    legacy_request->serviceResponseInclude =
-        hidl_request.srfRespondIfInAddressSet
-            ? legacy_hal::NAN_SRF_INCLUDE_RESPOND
-            : legacy_hal::NAN_SRF_INCLUDE_DO_NOT_RESPOND;
-    legacy_request->useServiceResponseFilter =
-        hidl_request.shouldUseSrf ? legacy_hal::NAN_USE_SRF
-                                  : legacy_hal::NAN_DO_NOT_USE_SRF;
-    legacy_request->ssiRequiredForMatchIndication =
-        hidl_request.isSsiRequiredForMatch
-            ? legacy_hal::NAN_SSI_REQUIRED_IN_MATCH_IND
-            : legacy_hal::NAN_SSI_NOT_REQUIRED_IN_MATCH_IND;
-    legacy_request->num_intf_addr_present = hidl_request.intfAddr.size();
-    if (legacy_request->num_intf_addr_present > NAN_MAX_SUBSCRIBE_MAX_ADDRESS) {
-        LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
-                      "num_intf_addr_present - too many";
-        return false;
-    }
-    for (int i = 0; i < legacy_request->num_intf_addr_present; i++) {
-        memcpy(legacy_request->intf_addr[i], hidl_request.intfAddr[i].data(),
-               6);
-    }
-
-    return true;
-}
-
-bool convertHidlNanTransmitFollowupRequestToLegacy(
-    const NanTransmitFollowupRequest& hidl_request,
-    legacy_hal::NanTransmitFollowupRequest* legacy_request) {
-    if (!legacy_request) {
-        LOG(ERROR) << "convertHidlNanTransmitFollowupRequestToLegacy: "
-                      "legacy_request is null";
-        return false;
-    }
-    *legacy_request = {};
-
-    legacy_request->publish_subscribe_id = hidl_request.discoverySessionId;
-    legacy_request->requestor_instance_id = hidl_request.peerId;
-    memcpy(legacy_request->addr, hidl_request.addr.data(), 6);
-    legacy_request->priority = hidl_request.isHighPriority
-                                   ? legacy_hal::NAN_TX_PRIORITY_HIGH
-                                   : legacy_hal::NAN_TX_PRIORITY_NORMAL;
-    legacy_request->dw_or_faw = hidl_request.shouldUseDiscoveryWindow
-                                    ? legacy_hal::NAN_TRANSMIT_IN_DW
-                                    : legacy_hal::NAN_TRANSMIT_IN_FAW;
-    legacy_request->service_specific_info_len =
-        hidl_request.serviceSpecificInfo.size();
-    if (legacy_request->service_specific_info_len >
-        NAN_MAX_SERVICE_SPECIFIC_INFO_LEN) {
-        LOG(ERROR) << "convertHidlNanTransmitFollowupRequestToLegacy: "
-                      "service_specific_info_len too large";
-        return false;
-    }
-    memcpy(legacy_request->service_specific_info,
-           hidl_request.serviceSpecificInfo.data(),
-           legacy_request->service_specific_info_len);
-    legacy_request->sdea_service_specific_info_len =
-        hidl_request.extendedServiceSpecificInfo.size();
-    if (legacy_request->sdea_service_specific_info_len >
-        NAN_MAX_SDEA_SERVICE_SPECIFIC_INFO_LEN) {
-        LOG(ERROR) << "convertHidlNanTransmitFollowupRequestToLegacy: "
-                      "sdea_service_specific_info_len too large";
-        return false;
-    }
-    memcpy(legacy_request->sdea_service_specific_info,
-           hidl_request.extendedServiceSpecificInfo.data(),
-           legacy_request->sdea_service_specific_info_len);
-    legacy_request->recv_indication_cfg =
-        hidl_request.disableFollowupResultIndication ? 0x1 : 0x0;
-
-    return true;
-}
-
-bool convertHidlNanConfigRequestToLegacy(
-    const NanConfigRequest& hidl_request,
-    legacy_hal::NanConfigRequest* legacy_request) {
-    if (!legacy_request) {
-        LOG(ERROR)
-            << "convertHidlNanConfigRequestToLegacy: legacy_request is null";
-        return false;
-    }
-    *legacy_request = {};
-
-    // TODO: b/34059183 tracks missing configurations in legacy HAL or uknown
-    // defaults
-    legacy_request->master_pref = hidl_request.masterPref;
-    legacy_request->discovery_indication_cfg = 0;
-    legacy_request->discovery_indication_cfg |=
-        hidl_request.disableDiscoveryAddressChangeIndication ? 0x1 : 0x0;
-    legacy_request->discovery_indication_cfg |=
-        hidl_request.disableStartedClusterIndication ? 0x2 : 0x0;
-    legacy_request->discovery_indication_cfg |=
-        hidl_request.disableJoinedClusterIndication ? 0x4 : 0x0;
-    legacy_request->config_sid_beacon = 1;
-    if (hidl_request.numberOfPublishServiceIdsInBeacon > 127) {
-        LOG(ERROR) << "convertHidlNanConfigRequestToLegacy: "
-                      "numberOfPublishServiceIdsInBeacon > 127";
-        return false;
-    }
-    legacy_request->sid_beacon =
-        (hidl_request.includePublishServiceIdsInBeacon ? 0x1 : 0x0) |
-        (hidl_request.numberOfPublishServiceIdsInBeacon << 1);
-    legacy_request->config_subscribe_sid_beacon = 1;
-    if (hidl_request.numberOfSubscribeServiceIdsInBeacon > 127) {
-        LOG(ERROR) << "convertHidlNanConfigRequestToLegacy: "
-                      "numberOfSubscribeServiceIdsInBeacon > 127";
-        return false;
-    }
-    legacy_request->subscribe_sid_beacon_val =
-        (hidl_request.includeSubscribeServiceIdsInBeacon ? 0x1 : 0x0) |
-        (hidl_request.numberOfSubscribeServiceIdsInBeacon << 1);
-    legacy_request->config_rssi_window_size = 1;
-    legacy_request->rssi_window_size_val = hidl_request.rssiWindowSize;
-    legacy_request->config_disc_mac_addr_randomization = 1;
-    legacy_request->disc_mac_addr_rand_interval_sec =
-        hidl_request.macAddressRandomizationIntervalSec;
-    /* TODO : missing
-    legacy_request->config_2dot4g_rssi_close = 1;
-    legacy_request->rssi_close_2dot4g_val =
-          hidl_request.bandSpecificConfig[
-              (size_t) NanBandIndex::NAN_BAND_24GHZ].rssiClose;
-    legacy_request->config_2dot4g_rssi_middle = 1;
-    legacy_request->rssi_middle_2dot4g_val =
-          hidl_request.bandSpecificConfig[
-              (size_t) NanBandIndex::NAN_BAND_24GHZ].rssiMiddle;
-    legacy_request->config_2dot4g_rssi_proximity = 1;
-    legacy_request->rssi_proximity_2dot4g_val =
-          hidl_request.bandSpecificConfig[
-              (size_t) NanBandIndex::NAN_BAND_24GHZ].rssiCloseProximity;
-    */
-    legacy_request->config_scan_params = 1;
-    legacy_request->scan_params_val
-        .dwell_time[legacy_hal::NAN_CHANNEL_24G_BAND] =
-        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
-            .dwellTimeMs;
-    legacy_request->scan_params_val
-        .scan_period[legacy_hal::NAN_CHANNEL_24G_BAND] =
-        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
-            .scanPeriodSec;
-    legacy_request->config_dw.config_2dot4g_dw_band =
-        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
-            .validDiscoveryWindowIntervalVal;
-    legacy_request->config_dw.dw_2dot4g_interval_val =
-        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
-            .discoveryWindowIntervalVal;
-    /* TODO: missing
-    legacy_request->config_5g_rssi_close = 1;
-    legacy_request->rssi_close_5g_val =
-          hidl_request.bandSpecificConfig[
-              (size_t) NanBandIndex::NAN_BAND_5GHZ].rssiClose;
-    legacy_request->config_5g_rssi_middle = 1;
-    legacy_request->rssi_middle_5g_val =
-          hidl_request.bandSpecificConfig[
-              (size_t) NanBandIndex::NAN_BAND_5GHZ].rssiMiddle;
-    */
-    legacy_request->config_5g_rssi_close_proximity = 1;
-    legacy_request->rssi_close_proximity_5g_val =
-        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .rssiCloseProximity;
-    legacy_request->scan_params_val
-        .dwell_time[legacy_hal::NAN_CHANNEL_5G_BAND_LOW] =
-        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .dwellTimeMs;
-    legacy_request->scan_params_val
-        .scan_period[legacy_hal::NAN_CHANNEL_5G_BAND_LOW] =
-        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .scanPeriodSec;
-    legacy_request->scan_params_val
-        .dwell_time[legacy_hal::NAN_CHANNEL_5G_BAND_HIGH] =
-        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .dwellTimeMs;
-    legacy_request->scan_params_val
-        .scan_period[legacy_hal::NAN_CHANNEL_5G_BAND_HIGH] =
-        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .scanPeriodSec;
-    legacy_request->config_dw.config_5g_dw_band =
-        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .validDiscoveryWindowIntervalVal;
-    legacy_request->config_dw.dw_5g_interval_val =
-        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
-            .discoveryWindowIntervalVal;
-
-    return true;
-}
-
-bool convertHidlNanConfigRequest_1_2ToLegacy(
-    const NanConfigRequest& hidl_request1,
-    const V1_2::NanConfigRequestSupplemental& hidl_request2,
-    legacy_hal::NanConfigRequest* legacy_request) {
-    if (!legacy_request) {
-        LOG(ERROR) << "convertHidlNanConfigRequest_1_2ToLegacy: legacy_request "
-                      "is null";
-        return false;
-    }
-
-    *legacy_request = {};
-    if (!convertHidlNanConfigRequestToLegacy(hidl_request1, legacy_request)) {
-        return false;
-    }
-
-    legacy_request->config_discovery_beacon_int = 1;
-    legacy_request->discovery_beacon_interval =
-        hidl_request2.discoveryBeaconIntervalMs;
-    legacy_request->config_nss = 1;
-    legacy_request->nss = hidl_request2.numberOfSpatialStreamsInDiscovery;
-    legacy_request->config_dw_early_termination = 1;
-    legacy_request->enable_dw_termination =
-        hidl_request2.enableDiscoveryWindowEarlyTermination;
-    legacy_request->config_enable_ranging = 1;
-    legacy_request->enable_ranging = hidl_request2.enableRanging;
-
-    return true;
-}
-
-bool convertHidlNanDataPathInitiatorRequestToLegacy(
-    const NanInitiateDataPathRequest& hidl_request,
-    legacy_hal::NanDataPathInitiatorRequest* legacy_request) {
-    if (!legacy_request) {
-        LOG(ERROR) << "convertHidlNanDataPathInitiatorRequestToLegacy: "
-                      "legacy_request is null";
-        return false;
-    }
-    *legacy_request = {};
-
-    legacy_request->requestor_instance_id = hidl_request.peerId;
-    memcpy(legacy_request->peer_disc_mac_addr,
-           hidl_request.peerDiscMacAddr.data(), 6);
-    legacy_request->channel_request_type =
-        convertHidlNanDataPathChannelCfgToLegacy(
-            hidl_request.channelRequestType);
-    legacy_request->channel = hidl_request.channel;
-    if (strnlen(hidl_request.ifaceName.c_str(), IFNAMSIZ + 1) == IFNAMSIZ + 1) {
-        LOG(ERROR) << "convertHidlNanDataPathInitiatorRequestToLegacy: "
-                      "ifaceName too long";
-        return false;
-    }
-    strncpy(legacy_request->ndp_iface, hidl_request.ifaceName.c_str(),
-            IFNAMSIZ + 1);
-    legacy_request->ndp_cfg.security_cfg =
-        (hidl_request.securityConfig.securityType !=
-         NanDataPathSecurityType::OPEN)
-            ? legacy_hal::NAN_DP_CONFIG_SECURITY
-            : legacy_hal::NAN_DP_CONFIG_NO_SECURITY;
-    legacy_request->app_info.ndp_app_info_len = hidl_request.appInfo.size();
-    if (legacy_request->app_info.ndp_app_info_len > NAN_DP_MAX_APP_INFO_LEN) {
-        LOG(ERROR) << "convertHidlNanDataPathInitiatorRequestToLegacy: "
-                      "ndp_app_info_len too large";
-        return false;
-    }
-    memcpy(legacy_request->app_info.ndp_app_info, hidl_request.appInfo.data(),
-           legacy_request->app_info.ndp_app_info_len);
-    legacy_request->cipher_type =
-        (unsigned int)hidl_request.securityConfig.cipherType;
-    if (hidl_request.securityConfig.securityType ==
-        NanDataPathSecurityType::PMK) {
-        legacy_request->key_info.key_type =
-            legacy_hal::NAN_SECURITY_KEY_INPUT_PMK;
-        legacy_request->key_info.body.pmk_info.pmk_len =
-            hidl_request.securityConfig.pmk.size();
-        if (legacy_request->key_info.body.pmk_info.pmk_len !=
-            NAN_PMK_INFO_LEN) {
-            LOG(ERROR) << "convertHidlNanDataPathInitiatorRequestToLegacy: "
-                          "invalid pmk_len";
-            return false;
-        }
-        memcpy(legacy_request->key_info.body.pmk_info.pmk,
-               hidl_request.securityConfig.pmk.data(),
-               legacy_request->key_info.body.pmk_info.pmk_len);
-    }
-    if (hidl_request.securityConfig.securityType ==
-        NanDataPathSecurityType::PASSPHRASE) {
-        legacy_request->key_info.key_type =
-            legacy_hal::NAN_SECURITY_KEY_INPUT_PASSPHRASE;
-        legacy_request->key_info.body.passphrase_info.passphrase_len =
-            hidl_request.securityConfig.passphrase.size();
-        if (legacy_request->key_info.body.passphrase_info.passphrase_len <
-            NAN_SECURITY_MIN_PASSPHRASE_LEN) {
-            LOG(ERROR) << "convertHidlNanDataPathInitiatorRequestToLegacy: "
-                          "passphrase_len too small";
-            return false;
-        }
-        if (legacy_request->key_info.body.passphrase_info.passphrase_len >
-            NAN_SECURITY_MAX_PASSPHRASE_LEN) {
-            LOG(ERROR) << "convertHidlNanDataPathInitiatorRequestToLegacy: "
-                          "passphrase_len too large";
-            return false;
-        }
-        memcpy(legacy_request->key_info.body.passphrase_info.passphrase,
-               hidl_request.securityConfig.passphrase.data(),
-               legacy_request->key_info.body.passphrase_info.passphrase_len);
-    }
-    legacy_request->service_name_len = hidl_request.serviceNameOutOfBand.size();
-    if (legacy_request->service_name_len > NAN_MAX_SERVICE_NAME_LEN) {
-        LOG(ERROR) << "convertHidlNanDataPathInitiatorRequestToLegacy: "
-                      "service_name_len too large";
-        return false;
-    }
-    memcpy(legacy_request->service_name,
-           hidl_request.serviceNameOutOfBand.data(),
-           legacy_request->service_name_len);
-
-    return true;
-}
-
-bool convertHidlNanDataPathIndicationResponseToLegacy(
-    const NanRespondToDataPathIndicationRequest& hidl_request,
-    legacy_hal::NanDataPathIndicationResponse* legacy_request) {
-    if (!legacy_request) {
-        LOG(ERROR) << "convertHidlNanDataPathIndicationResponseToLegacy: "
-                      "legacy_request is null";
-        return false;
-    }
-    *legacy_request = {};
-
-    legacy_request->rsp_code = hidl_request.acceptRequest
-                                   ? legacy_hal::NAN_DP_REQUEST_ACCEPT
-                                   : legacy_hal::NAN_DP_REQUEST_REJECT;
-    legacy_request->ndp_instance_id = hidl_request.ndpInstanceId;
-    if (strnlen(hidl_request.ifaceName.c_str(), IFNAMSIZ + 1) == IFNAMSIZ + 1) {
-        LOG(ERROR) << "convertHidlNanDataPathIndicationResponseToLegacy: "
-                      "ifaceName too long";
-        return false;
-    }
-    strncpy(legacy_request->ndp_iface, hidl_request.ifaceName.c_str(),
-            IFNAMSIZ + 1);
-    legacy_request->ndp_cfg.security_cfg =
-        (hidl_request.securityConfig.securityType !=
-         NanDataPathSecurityType::OPEN)
-            ? legacy_hal::NAN_DP_CONFIG_SECURITY
-            : legacy_hal::NAN_DP_CONFIG_NO_SECURITY;
-    legacy_request->app_info.ndp_app_info_len = hidl_request.appInfo.size();
-    if (legacy_request->app_info.ndp_app_info_len > NAN_DP_MAX_APP_INFO_LEN) {
-        LOG(ERROR) << "convertHidlNanDataPathIndicationResponseToLegacy: "
-                      "ndp_app_info_len too large";
-        return false;
-    }
-    memcpy(legacy_request->app_info.ndp_app_info, hidl_request.appInfo.data(),
-           legacy_request->app_info.ndp_app_info_len);
-    legacy_request->cipher_type =
-        (unsigned int)hidl_request.securityConfig.cipherType;
-    if (hidl_request.securityConfig.securityType ==
-        NanDataPathSecurityType::PMK) {
-        legacy_request->key_info.key_type =
-            legacy_hal::NAN_SECURITY_KEY_INPUT_PMK;
-        legacy_request->key_info.body.pmk_info.pmk_len =
-            hidl_request.securityConfig.pmk.size();
-        if (legacy_request->key_info.body.pmk_info.pmk_len !=
-            NAN_PMK_INFO_LEN) {
-            LOG(ERROR) << "convertHidlNanDataPathIndicationResponseToLegacy: "
-                          "invalid pmk_len";
-            return false;
-        }
-        memcpy(legacy_request->key_info.body.pmk_info.pmk,
-               hidl_request.securityConfig.pmk.data(),
-               legacy_request->key_info.body.pmk_info.pmk_len);
-    }
-    if (hidl_request.securityConfig.securityType ==
-        NanDataPathSecurityType::PASSPHRASE) {
-        legacy_request->key_info.key_type =
-            legacy_hal::NAN_SECURITY_KEY_INPUT_PASSPHRASE;
-        legacy_request->key_info.body.passphrase_info.passphrase_len =
-            hidl_request.securityConfig.passphrase.size();
-        if (legacy_request->key_info.body.passphrase_info.passphrase_len <
-            NAN_SECURITY_MIN_PASSPHRASE_LEN) {
-            LOG(ERROR) << "convertHidlNanDataPathIndicationResponseToLegacy: "
-                          "passphrase_len too small";
-            return false;
-        }
-        if (legacy_request->key_info.body.passphrase_info.passphrase_len >
-            NAN_SECURITY_MAX_PASSPHRASE_LEN) {
-            LOG(ERROR) << "convertHidlNanDataPathIndicationResponseToLegacy: "
-                          "passphrase_len too large";
-            return false;
-        }
-        memcpy(legacy_request->key_info.body.passphrase_info.passphrase,
-               hidl_request.securityConfig.passphrase.data(),
-               legacy_request->key_info.body.passphrase_info.passphrase_len);
-    }
-    legacy_request->service_name_len = hidl_request.serviceNameOutOfBand.size();
-    if (legacy_request->service_name_len > NAN_MAX_SERVICE_NAME_LEN) {
-        LOG(ERROR) << "convertHidlNanDataPathIndicationResponseToLegacy: "
-                      "service_name_len too large";
-        return false;
-    }
-    memcpy(legacy_request->service_name,
-           hidl_request.serviceNameOutOfBand.data(),
-           legacy_request->service_name_len);
-
-    return true;
-}
-
-bool convertLegacyNanResponseHeaderToHidl(
-    const legacy_hal::NanResponseMsg& legacy_response,
-    WifiNanStatus* wifiNanStatus) {
-    if (!wifiNanStatus) {
-        LOG(ERROR)
-            << "convertLegacyNanResponseHeaderToHidl: wifiNanStatus is null";
-        return false;
-    }
-    *wifiNanStatus = {};
-
-    convertToWifiNanStatus(legacy_response.status, legacy_response.nan_error,
-                           sizeof(legacy_response.nan_error), wifiNanStatus);
-    return true;
-}
-
-bool convertLegacyNanCapabilitiesResponseToHidl(
-    const legacy_hal::NanCapabilities& legacy_response,
-    NanCapabilities* hidl_response) {
-    if (!hidl_response) {
-        LOG(ERROR) << "convertLegacyNanCapabilitiesResponseToHidl: "
-                      "hidl_response is null";
-        return false;
-    }
-    *hidl_response = {};
-
-    hidl_response->maxConcurrentClusters =
-        legacy_response.max_concurrent_nan_clusters;
-    hidl_response->maxPublishes = legacy_response.max_publishes;
-    hidl_response->maxSubscribes = legacy_response.max_subscribes;
-    hidl_response->maxServiceNameLen = legacy_response.max_service_name_len;
-    hidl_response->maxMatchFilterLen = legacy_response.max_match_filter_len;
-    hidl_response->maxTotalMatchFilterLen =
-        legacy_response.max_total_match_filter_len;
-    hidl_response->maxServiceSpecificInfoLen =
-        legacy_response.max_service_specific_info_len;
-    hidl_response->maxExtendedServiceSpecificInfoLen =
-        legacy_response.max_sdea_service_specific_info_len;
-    hidl_response->maxNdiInterfaces = legacy_response.max_ndi_interfaces;
-    hidl_response->maxNdpSessions = legacy_response.max_ndp_sessions;
-    hidl_response->maxAppInfoLen = legacy_response.max_app_info_len;
-    hidl_response->maxQueuedTransmitFollowupMsgs =
-        legacy_response.max_queued_transmit_followup_msgs;
-    hidl_response->maxSubscribeInterfaceAddresses =
-        legacy_response.max_subscribe_address;
-    hidl_response->supportedCipherSuites =
-        legacy_response.cipher_suites_supported;
-
-    return true;
-}
-
-bool convertLegacyNanMatchIndToHidl(const legacy_hal::NanMatchInd& legacy_ind,
-                                    NanMatchInd* hidl_ind) {
-    if (!hidl_ind) {
-        LOG(ERROR) << "convertLegacyNanMatchIndToHidl: hidl_ind is null";
-        return false;
-    }
-    *hidl_ind = {};
-
-    hidl_ind->discoverySessionId = legacy_ind.publish_subscribe_id;
-    hidl_ind->peerId = legacy_ind.requestor_instance_id;
-    hidl_ind->addr = hidl_array<uint8_t, 6>(legacy_ind.addr);
-    hidl_ind->serviceSpecificInfo =
-        std::vector<uint8_t>(legacy_ind.service_specific_info,
-                             legacy_ind.service_specific_info +
-                                 legacy_ind.service_specific_info_len);
-    hidl_ind->extendedServiceSpecificInfo =
-        std::vector<uint8_t>(legacy_ind.sdea_service_specific_info,
-                             legacy_ind.sdea_service_specific_info +
-                                 legacy_ind.sdea_service_specific_info_len);
-    hidl_ind->matchFilter = std::vector<uint8_t>(
-        legacy_ind.sdf_match_filter,
-        legacy_ind.sdf_match_filter + legacy_ind.sdf_match_filter_len);
-    hidl_ind->matchOccuredInBeaconFlag = legacy_ind.match_occured_flag == 1;
-    hidl_ind->outOfResourceFlag = legacy_ind.out_of_resource_flag == 1;
-    hidl_ind->rssiValue = legacy_ind.rssi_value;
-    hidl_ind->peerCipherType = (NanCipherSuiteType)legacy_ind.peer_cipher_type;
-    hidl_ind->peerRequiresSecurityEnabledInNdp =
-        legacy_ind.peer_sdea_params.security_cfg ==
-        legacy_hal::NAN_DP_CONFIG_SECURITY;
-    hidl_ind->peerRequiresRanging = legacy_ind.peer_sdea_params.ranging_state ==
-                                    legacy_hal::NAN_RANGING_ENABLE;
-    hidl_ind->rangingMeasurementInCm =
-        legacy_ind.range_info.range_measurement_mm / 10;
-    hidl_ind->rangingIndicationType = legacy_ind.range_info.ranging_event_type;
-
-    return true;
-}
-
-bool convertLegacyNanFollowupIndToHidl(
-    const legacy_hal::NanFollowupInd& legacy_ind,
-    NanFollowupReceivedInd* hidl_ind) {
-    if (!hidl_ind) {
-        LOG(ERROR) << "convertLegacyNanFollowupIndToHidl: hidl_ind is null";
-        return false;
-    }
-    *hidl_ind = {};
-
-    hidl_ind->discoverySessionId = legacy_ind.publish_subscribe_id;
-    hidl_ind->peerId = legacy_ind.requestor_instance_id;
-    hidl_ind->addr = hidl_array<uint8_t, 6>(legacy_ind.addr);
-    hidl_ind->receivedInFaw = legacy_ind.dw_or_faw == 1;
-    hidl_ind->serviceSpecificInfo =
-        std::vector<uint8_t>(legacy_ind.service_specific_info,
-                             legacy_ind.service_specific_info +
-                                 legacy_ind.service_specific_info_len);
-    hidl_ind->extendedServiceSpecificInfo =
-        std::vector<uint8_t>(legacy_ind.sdea_service_specific_info,
-                             legacy_ind.sdea_service_specific_info +
-                                 legacy_ind.sdea_service_specific_info_len);
-
-    return true;
-}
-
-bool convertLegacyNanDataPathRequestIndToHidl(
-    const legacy_hal::NanDataPathRequestInd& legacy_ind,
-    NanDataPathRequestInd* hidl_ind) {
-    if (!hidl_ind) {
-        LOG(ERROR)
-            << "convertLegacyNanDataPathRequestIndToHidl: hidl_ind is null";
-        return false;
-    }
-    *hidl_ind = {};
-
-    hidl_ind->discoverySessionId = legacy_ind.service_instance_id;
-    hidl_ind->peerDiscMacAddr =
-        hidl_array<uint8_t, 6>(legacy_ind.peer_disc_mac_addr);
-    hidl_ind->ndpInstanceId = legacy_ind.ndp_instance_id;
-    hidl_ind->securityRequired =
-        legacy_ind.ndp_cfg.security_cfg == legacy_hal::NAN_DP_CONFIG_SECURITY;
-    hidl_ind->appInfo =
-        std::vector<uint8_t>(legacy_ind.app_info.ndp_app_info,
-                             legacy_ind.app_info.ndp_app_info +
-                                 legacy_ind.app_info.ndp_app_info_len);
-
-    return true;
-}
-
-bool convertLegacyNdpChannelInfoToHidl(
-    const legacy_hal::NanChannelInfo& legacy_struct,
-    V1_2::NanDataPathChannelInfo* hidl_struct) {
-    if (!hidl_struct) {
-        LOG(ERROR) << "convertLegacyNdpChannelInfoToHidl: hidl_struct is null";
-        return false;
-    }
-    *hidl_struct = {};
-
-    hidl_struct->channelFreq = legacy_struct.channel;
-    hidl_struct->channelBandwidth = convertLegacyWifiChannelWidthToHidl(
-        (legacy_hal::wifi_channel_width)legacy_struct.bandwidth);
-    hidl_struct->numSpatialStreams = legacy_struct.nss;
-
-    return true;
-}
-
-bool convertLegacyNanDataPathConfirmIndToHidl(
-    const legacy_hal::NanDataPathConfirmInd& legacy_ind,
-    V1_2::NanDataPathConfirmInd* hidl_ind) {
-    if (!hidl_ind) {
-        LOG(ERROR)
-            << "convertLegacyNanDataPathConfirmIndToHidl: hidl_ind is null";
-        return false;
-    }
-    *hidl_ind = {};
-
-    hidl_ind->V1_0.ndpInstanceId = legacy_ind.ndp_instance_id;
-    hidl_ind->V1_0.dataPathSetupSuccess =
-        legacy_ind.rsp_code == legacy_hal::NAN_DP_REQUEST_ACCEPT;
-    hidl_ind->V1_0.peerNdiMacAddr =
-        hidl_array<uint8_t, 6>(legacy_ind.peer_ndi_mac_addr);
-    hidl_ind->V1_0.appInfo =
-        std::vector<uint8_t>(legacy_ind.app_info.ndp_app_info,
-                             legacy_ind.app_info.ndp_app_info +
-                                 legacy_ind.app_info.ndp_app_info_len);
-    hidl_ind->V1_0.status.status =
-        convertLegacyNanStatusTypeToHidl(legacy_ind.reason_code);
-    hidl_ind->V1_0.status.description = "";  // TODO: b/34059183
-
-    std::vector<V1_2::NanDataPathChannelInfo> channelInfo;
-    for (unsigned int i = 0; i < legacy_ind.num_channels; ++i) {
-        V1_2::NanDataPathChannelInfo hidl_struct;
-        if (!convertLegacyNdpChannelInfoToHidl(legacy_ind.channel_info[i],
-                                               &hidl_struct)) {
-            return false;
-        }
-        channelInfo.push_back(hidl_struct);
-    }
-    hidl_ind->channelInfo = channelInfo;
-
-    return true;
-}
-
-bool convertLegacyNanDataPathScheduleUpdateIndToHidl(
-    const legacy_hal::NanDataPathScheduleUpdateInd& legacy_ind,
-    V1_2::NanDataPathScheduleUpdateInd* hidl_ind) {
-    if (!hidl_ind) {
-        LOG(ERROR) << "convertLegacyNanDataPathScheduleUpdateIndToHidl: "
-                      "hidl_ind is null";
-        return false;
-    }
-    *hidl_ind = {};
-
-    hidl_ind->peerDiscoveryAddress =
-        hidl_array<uint8_t, 6>(legacy_ind.peer_mac_addr);
-    std::vector<V1_2::NanDataPathChannelInfo> channelInfo;
-    for (unsigned int i = 0; i < legacy_ind.num_channels; ++i) {
-        V1_2::NanDataPathChannelInfo hidl_struct;
-        if (!convertLegacyNdpChannelInfoToHidl(legacy_ind.channel_info[i],
-                                               &hidl_struct)) {
-            return false;
-        }
-        channelInfo.push_back(hidl_struct);
-    }
-    hidl_ind->channelInfo = channelInfo;
-    std::vector<uint32_t> ndpInstanceIds;
-    for (unsigned int i = 0; i < legacy_ind.num_ndp_instances; ++i) {
-        ndpInstanceIds.push_back(legacy_ind.ndp_instance_id[i]);
-    }
-    hidl_ind->ndpInstanceIds = ndpInstanceIds;
-
-    return true;
-}
-
-legacy_hal::wifi_rtt_type convertHidlRttTypeToLegacy(RttType type) {
-    switch (type) {
-        case RttType::ONE_SIDED:
-            return legacy_hal::RTT_TYPE_1_SIDED;
-        case RttType::TWO_SIDED:
-            return legacy_hal::RTT_TYPE_2_SIDED;
-    };
-    CHECK(false);
-}
-
-RttType convertLegacyRttTypeToHidl(legacy_hal::wifi_rtt_type type) {
-    switch (type) {
-        case legacy_hal::RTT_TYPE_1_SIDED:
-            return RttType::ONE_SIDED;
-        case legacy_hal::RTT_TYPE_2_SIDED:
-            return RttType::TWO_SIDED;
-    };
-    CHECK(false) << "Unknown legacy type: " << type;
-}
-
-legacy_hal::rtt_peer_type convertHidlRttPeerTypeToLegacy(RttPeerType type) {
-    switch (type) {
-        case RttPeerType::AP:
-            return legacy_hal::RTT_PEER_AP;
-        case RttPeerType::STA:
-            return legacy_hal::RTT_PEER_STA;
-        case RttPeerType::P2P_GO:
-            return legacy_hal::RTT_PEER_P2P_GO;
-        case RttPeerType::P2P_CLIENT:
-            return legacy_hal::RTT_PEER_P2P_CLIENT;
-        case RttPeerType::NAN:
-            return legacy_hal::RTT_PEER_NAN;
-    };
-    CHECK(false);
-}
-
-legacy_hal::wifi_channel_width convertHidlWifiChannelWidthToLegacy(
-    WifiChannelWidthInMhz type) {
-    switch (type) {
-        case WifiChannelWidthInMhz::WIDTH_20:
-            return legacy_hal::WIFI_CHAN_WIDTH_20;
-        case WifiChannelWidthInMhz::WIDTH_40:
-            return legacy_hal::WIFI_CHAN_WIDTH_40;
-        case WifiChannelWidthInMhz::WIDTH_80:
-            return legacy_hal::WIFI_CHAN_WIDTH_80;
-        case WifiChannelWidthInMhz::WIDTH_160:
-            return legacy_hal::WIFI_CHAN_WIDTH_160;
-        case WifiChannelWidthInMhz::WIDTH_80P80:
-            return legacy_hal::WIFI_CHAN_WIDTH_80P80;
-        case WifiChannelWidthInMhz::WIDTH_5:
-            return legacy_hal::WIFI_CHAN_WIDTH_5;
-        case WifiChannelWidthInMhz::WIDTH_10:
-            return legacy_hal::WIFI_CHAN_WIDTH_10;
-        case WifiChannelWidthInMhz::WIDTH_INVALID:
-            return legacy_hal::WIFI_CHAN_WIDTH_INVALID;
-    };
-    CHECK(false);
-}
-
-WifiChannelWidthInMhz convertLegacyWifiChannelWidthToHidl(
-    legacy_hal::wifi_channel_width type) {
-    switch (type) {
-        case legacy_hal::WIFI_CHAN_WIDTH_20:
-            return WifiChannelWidthInMhz::WIDTH_20;
-        case legacy_hal::WIFI_CHAN_WIDTH_40:
-            return WifiChannelWidthInMhz::WIDTH_40;
-        case legacy_hal::WIFI_CHAN_WIDTH_80:
-            return WifiChannelWidthInMhz::WIDTH_80;
-        case legacy_hal::WIFI_CHAN_WIDTH_160:
-            return WifiChannelWidthInMhz::WIDTH_160;
-        case legacy_hal::WIFI_CHAN_WIDTH_80P80:
-            return WifiChannelWidthInMhz::WIDTH_80P80;
-        case legacy_hal::WIFI_CHAN_WIDTH_5:
-            return WifiChannelWidthInMhz::WIDTH_5;
-        case legacy_hal::WIFI_CHAN_WIDTH_10:
-            return WifiChannelWidthInMhz::WIDTH_10;
-        case legacy_hal::WIFI_CHAN_WIDTH_INVALID:
-            return WifiChannelWidthInMhz::WIDTH_INVALID;
-    };
-    CHECK(false) << "Unknown legacy type: " << type;
-}
-
-legacy_hal::wifi_rtt_preamble convertHidlRttPreambleToLegacy(RttPreamble type) {
-    switch (type) {
-        case RttPreamble::LEGACY:
-            return legacy_hal::WIFI_RTT_PREAMBLE_LEGACY;
-        case RttPreamble::HT:
-            return legacy_hal::WIFI_RTT_PREAMBLE_HT;
-        case RttPreamble::VHT:
-            return legacy_hal::WIFI_RTT_PREAMBLE_VHT;
-    };
-    CHECK(false);
-}
-
-RttPreamble convertLegacyRttPreambleToHidl(legacy_hal::wifi_rtt_preamble type) {
-    switch (type) {
-        case legacy_hal::WIFI_RTT_PREAMBLE_LEGACY:
-            return RttPreamble::LEGACY;
-        case legacy_hal::WIFI_RTT_PREAMBLE_HT:
-            return RttPreamble::HT;
-        case legacy_hal::WIFI_RTT_PREAMBLE_VHT:
-            return RttPreamble::VHT;
-    };
-    CHECK(false) << "Unknown legacy type: " << type;
-}
-
-legacy_hal::wifi_rtt_bw convertHidlRttBwToLegacy(RttBw type) {
-    switch (type) {
-        case RttBw::BW_5MHZ:
-            return legacy_hal::WIFI_RTT_BW_5;
-        case RttBw::BW_10MHZ:
-            return legacy_hal::WIFI_RTT_BW_10;
-        case RttBw::BW_20MHZ:
-            return legacy_hal::WIFI_RTT_BW_20;
-        case RttBw::BW_40MHZ:
-            return legacy_hal::WIFI_RTT_BW_40;
-        case RttBw::BW_80MHZ:
-            return legacy_hal::WIFI_RTT_BW_80;
-        case RttBw::BW_160MHZ:
-            return legacy_hal::WIFI_RTT_BW_160;
-    };
-    CHECK(false);
-}
-
-RttBw convertLegacyRttBwToHidl(legacy_hal::wifi_rtt_bw type) {
-    switch (type) {
-        case legacy_hal::WIFI_RTT_BW_5:
-            return RttBw::BW_5MHZ;
-        case legacy_hal::WIFI_RTT_BW_10:
-            return RttBw::BW_10MHZ;
-        case legacy_hal::WIFI_RTT_BW_20:
-            return RttBw::BW_20MHZ;
-        case legacy_hal::WIFI_RTT_BW_40:
-            return RttBw::BW_40MHZ;
-        case legacy_hal::WIFI_RTT_BW_80:
-            return RttBw::BW_80MHZ;
-        case legacy_hal::WIFI_RTT_BW_160:
-            return RttBw::BW_160MHZ;
-    };
-    CHECK(false) << "Unknown legacy type: " << type;
-}
-
-legacy_hal::wifi_motion_pattern convertHidlRttMotionPatternToLegacy(
-    RttMotionPattern type) {
-    switch (type) {
-        case RttMotionPattern::NOT_EXPECTED:
-            return legacy_hal::WIFI_MOTION_NOT_EXPECTED;
-        case RttMotionPattern::EXPECTED:
-            return legacy_hal::WIFI_MOTION_EXPECTED;
-        case RttMotionPattern::UNKNOWN:
-            return legacy_hal::WIFI_MOTION_UNKNOWN;
-    };
-    CHECK(false);
-}
-
-WifiRatePreamble convertLegacyWifiRatePreambleToHidl(uint8_t preamble) {
-    switch (preamble) {
-        case 0:
-            return WifiRatePreamble::OFDM;
-        case 1:
-            return WifiRatePreamble::CCK;
-        case 2:
-            return WifiRatePreamble::HT;
-        case 3:
-            return WifiRatePreamble::VHT;
-        default:
-            return WifiRatePreamble::RESERVED;
-    };
-    CHECK(false) << "Unknown legacy preamble: " << preamble;
-}
-
-WifiRateNss convertLegacyWifiRateNssToHidl(uint8_t nss) {
-    switch (nss) {
-        case 0:
-            return WifiRateNss::NSS_1x1;
-        case 1:
-            return WifiRateNss::NSS_2x2;
-        case 2:
-            return WifiRateNss::NSS_3x3;
-        case 3:
-            return WifiRateNss::NSS_4x4;
-    };
-    CHECK(false) << "Unknown legacy nss: " << nss;
-    return {};
-}
-
-RttStatus convertLegacyRttStatusToHidl(legacy_hal::wifi_rtt_status status) {
-    switch (status) {
-        case legacy_hal::RTT_STATUS_SUCCESS:
-            return RttStatus::SUCCESS;
-        case legacy_hal::RTT_STATUS_FAILURE:
-            return RttStatus::FAILURE;
-        case legacy_hal::RTT_STATUS_FAIL_NO_RSP:
-            return RttStatus::FAIL_NO_RSP;
-        case legacy_hal::RTT_STATUS_FAIL_REJECTED:
-            return RttStatus::FAIL_REJECTED;
-        case legacy_hal::RTT_STATUS_FAIL_NOT_SCHEDULED_YET:
-            return RttStatus::FAIL_NOT_SCHEDULED_YET;
-        case legacy_hal::RTT_STATUS_FAIL_TM_TIMEOUT:
-            return RttStatus::FAIL_TM_TIMEOUT;
-        case legacy_hal::RTT_STATUS_FAIL_AP_ON_DIFF_CHANNEL:
-            return RttStatus::FAIL_AP_ON_DIFF_CHANNEL;
-        case legacy_hal::RTT_STATUS_FAIL_NO_CAPABILITY:
-            return RttStatus::FAIL_NO_CAPABILITY;
-        case legacy_hal::RTT_STATUS_ABORTED:
-            return RttStatus::ABORTED;
-        case legacy_hal::RTT_STATUS_FAIL_INVALID_TS:
-            return RttStatus::FAIL_INVALID_TS;
-        case legacy_hal::RTT_STATUS_FAIL_PROTOCOL:
-            return RttStatus::FAIL_PROTOCOL;
-        case legacy_hal::RTT_STATUS_FAIL_SCHEDULE:
-            return RttStatus::FAIL_SCHEDULE;
-        case legacy_hal::RTT_STATUS_FAIL_BUSY_TRY_LATER:
-            return RttStatus::FAIL_BUSY_TRY_LATER;
-        case legacy_hal::RTT_STATUS_INVALID_REQ:
-            return RttStatus::INVALID_REQ;
-        case legacy_hal::RTT_STATUS_NO_WIFI:
-            return RttStatus::NO_WIFI;
-        case legacy_hal::RTT_STATUS_FAIL_FTM_PARAM_OVERRIDE:
-            return RttStatus::FAIL_FTM_PARAM_OVERRIDE;
-        case legacy_hal::RTT_STATUS_NAN_RANGING_PROTOCOL_FAILURE:
-            return RttStatus::FAILURE;  // TODO: add HIDL enumeration
-        case legacy_hal::RTT_STATUS_NAN_RANGING_CONCURRENCY_NOT_SUPPORTED:
-            return RttStatus::FAILURE;  // TODO: add HIDL enumeration
-    };
-    CHECK(false) << "Unknown legacy status: " << status;
-}
-
-bool convertHidlWifiChannelInfoToLegacy(
-    const WifiChannelInfo& hidl_info,
-    legacy_hal::wifi_channel_info* legacy_info) {
-    if (!legacy_info) {
-        return false;
-    }
-    *legacy_info = {};
-    legacy_info->width = convertHidlWifiChannelWidthToLegacy(hidl_info.width);
-    legacy_info->center_freq = hidl_info.centerFreq;
-    legacy_info->center_freq0 = hidl_info.centerFreq0;
-    legacy_info->center_freq1 = hidl_info.centerFreq1;
-    return true;
-}
-
-bool convertLegacyWifiChannelInfoToHidl(
-    const legacy_hal::wifi_channel_info& legacy_info,
-    WifiChannelInfo* hidl_info) {
-    if (!hidl_info) {
-        return false;
-    }
-    *hidl_info = {};
-    hidl_info->width = convertLegacyWifiChannelWidthToHidl(legacy_info.width);
-    hidl_info->centerFreq = legacy_info.center_freq;
-    hidl_info->centerFreq0 = legacy_info.center_freq0;
-    hidl_info->centerFreq1 = legacy_info.center_freq1;
-    return true;
-}
-
-bool convertHidlRttConfigToLegacy(const RttConfig& hidl_config,
-                                  legacy_hal::wifi_rtt_config* legacy_config) {
-    if (!legacy_config) {
-        return false;
-    }
-    *legacy_config = {};
-    CHECK(hidl_config.addr.size() == sizeof(legacy_config->addr));
-    memcpy(legacy_config->addr, hidl_config.addr.data(),
-           hidl_config.addr.size());
-    legacy_config->type = convertHidlRttTypeToLegacy(hidl_config.type);
-    legacy_config->peer = convertHidlRttPeerTypeToLegacy(hidl_config.peer);
-    if (!convertHidlWifiChannelInfoToLegacy(hidl_config.channel,
-                                            &legacy_config->channel)) {
-        return false;
-    }
-    legacy_config->burst_period = hidl_config.burstPeriod;
-    legacy_config->num_burst = hidl_config.numBurst;
-    legacy_config->num_frames_per_burst = hidl_config.numFramesPerBurst;
-    legacy_config->num_retries_per_rtt_frame =
-        hidl_config.numRetriesPerRttFrame;
-    legacy_config->num_retries_per_ftmr = hidl_config.numRetriesPerFtmr;
-    legacy_config->LCI_request = hidl_config.mustRequestLci;
-    legacy_config->LCR_request = hidl_config.mustRequestLcr;
-    legacy_config->burst_duration = hidl_config.burstDuration;
-    legacy_config->preamble =
-        convertHidlRttPreambleToLegacy(hidl_config.preamble);
-    legacy_config->bw = convertHidlRttBwToLegacy(hidl_config.bw);
-    return true;
-}
-
-bool convertHidlVectorOfRttConfigToLegacy(
-    const std::vector<RttConfig>& hidl_configs,
-    std::vector<legacy_hal::wifi_rtt_config>* legacy_configs) {
-    if (!legacy_configs) {
-        return false;
-    }
-    *legacy_configs = {};
-    for (const auto& hidl_config : hidl_configs) {
-        legacy_hal::wifi_rtt_config legacy_config;
-        if (!convertHidlRttConfigToLegacy(hidl_config, &legacy_config)) {
-            return false;
-        }
-        legacy_configs->push_back(legacy_config);
-    }
-    return true;
-}
-
-bool convertHidlRttLciInformationToLegacy(
-    const RttLciInformation& hidl_info,
-    legacy_hal::wifi_lci_information* legacy_info) {
-    if (!legacy_info) {
-        return false;
-    }
-    *legacy_info = {};
-    legacy_info->latitude = hidl_info.latitude;
-    legacy_info->longitude = hidl_info.longitude;
-    legacy_info->altitude = hidl_info.altitude;
-    legacy_info->latitude_unc = hidl_info.latitudeUnc;
-    legacy_info->longitude_unc = hidl_info.longitudeUnc;
-    legacy_info->altitude_unc = hidl_info.altitudeUnc;
-    legacy_info->motion_pattern =
-        convertHidlRttMotionPatternToLegacy(hidl_info.motionPattern);
-    legacy_info->floor = hidl_info.floor;
-    legacy_info->height_above_floor = hidl_info.heightAboveFloor;
-    legacy_info->height_unc = hidl_info.heightUnc;
-    return true;
-}
-
-bool convertHidlRttLcrInformationToLegacy(
-    const RttLcrInformation& hidl_info,
-    legacy_hal::wifi_lcr_information* legacy_info) {
-    if (!legacy_info) {
-        return false;
-    }
-    *legacy_info = {};
-    CHECK(hidl_info.countryCode.size() == sizeof(legacy_info->country_code));
-    memcpy(legacy_info->country_code, hidl_info.countryCode.data(),
-           hidl_info.countryCode.size());
-    if (hidl_info.civicInfo.size() > sizeof(legacy_info->civic_info)) {
-        return false;
-    }
-    legacy_info->length = hidl_info.civicInfo.size();
-    memcpy(legacy_info->civic_info, hidl_info.civicInfo.c_str(),
-           hidl_info.civicInfo.size());
-    return true;
-}
-
-bool convertHidlRttResponderToLegacy(
-    const RttResponder& hidl_responder,
-    legacy_hal::wifi_rtt_responder* legacy_responder) {
-    if (!legacy_responder) {
-        return false;
-    }
-    *legacy_responder = {};
-    if (!convertHidlWifiChannelInfoToLegacy(hidl_responder.channel,
-                                            &legacy_responder->channel)) {
-        return false;
-    }
-    legacy_responder->preamble =
-        convertHidlRttPreambleToLegacy(hidl_responder.preamble);
-    return true;
-}
-
-bool convertLegacyRttResponderToHidl(
-    const legacy_hal::wifi_rtt_responder& legacy_responder,
-    RttResponder* hidl_responder) {
-    if (!hidl_responder) {
-        return false;
-    }
-    *hidl_responder = {};
-    if (!convertLegacyWifiChannelInfoToHidl(legacy_responder.channel,
-                                            &hidl_responder->channel)) {
-        return false;
-    }
-    hidl_responder->preamble =
-        convertLegacyRttPreambleToHidl(legacy_responder.preamble);
-    return true;
-}
-
-bool convertLegacyRttCapabilitiesToHidl(
-    const legacy_hal::wifi_rtt_capabilities& legacy_capabilities,
-    RttCapabilities* hidl_capabilities) {
-    if (!hidl_capabilities) {
-        return false;
-    }
-    *hidl_capabilities = {};
-    hidl_capabilities->rttOneSidedSupported =
-        legacy_capabilities.rtt_one_sided_supported;
-    hidl_capabilities->rttFtmSupported = legacy_capabilities.rtt_ftm_supported;
-    hidl_capabilities->lciSupported = legacy_capabilities.lci_support;
-    hidl_capabilities->lcrSupported = legacy_capabilities.lcr_support;
-    hidl_capabilities->responderSupported =
-        legacy_capabilities.responder_supported;
-    hidl_capabilities->preambleSupport = 0;
-    for (const auto flag : {legacy_hal::WIFI_RTT_PREAMBLE_LEGACY,
-                            legacy_hal::WIFI_RTT_PREAMBLE_HT,
-                            legacy_hal::WIFI_RTT_PREAMBLE_VHT}) {
-        if (legacy_capabilities.preamble_support & flag) {
-            hidl_capabilities->preambleSupport |=
-                static_cast<std::underlying_type<RttPreamble>::type>(
-                    convertLegacyRttPreambleToHidl(flag));
-        }
-    }
-    hidl_capabilities->bwSupport = 0;
-    for (const auto flag :
-         {legacy_hal::WIFI_RTT_BW_5, legacy_hal::WIFI_RTT_BW_10,
-          legacy_hal::WIFI_RTT_BW_20, legacy_hal::WIFI_RTT_BW_40,
-          legacy_hal::WIFI_RTT_BW_80, legacy_hal::WIFI_RTT_BW_160}) {
-        if (legacy_capabilities.bw_support & flag) {
-            hidl_capabilities->bwSupport |=
-                static_cast<std::underlying_type<RttBw>::type>(
-                    convertLegacyRttBwToHidl(flag));
-        }
-    }
-    hidl_capabilities->mcVersion = legacy_capabilities.mc_version;
-    return true;
-}
-
-bool convertLegacyWifiRateInfoToHidl(const legacy_hal::wifi_rate& legacy_rate,
-                                     WifiRateInfo* hidl_rate) {
-    if (!hidl_rate) {
-        return false;
-    }
-    *hidl_rate = {};
-    hidl_rate->preamble =
-        convertLegacyWifiRatePreambleToHidl(legacy_rate.preamble);
-    hidl_rate->nss = convertLegacyWifiRateNssToHidl(legacy_rate.nss);
-    hidl_rate->bw = convertLegacyWifiChannelWidthToHidl(
-        static_cast<legacy_hal::wifi_channel_width>(legacy_rate.bw));
-    hidl_rate->rateMcsIdx = legacy_rate.rateMcsIdx;
-    hidl_rate->bitRateInKbps = legacy_rate.bitrate;
-    return true;
-}
-
-bool convertLegacyRttResultToHidl(
-    const legacy_hal::wifi_rtt_result& legacy_result, RttResult* hidl_result) {
-    if (!hidl_result) {
-        return false;
-    }
-    *hidl_result = {};
-    CHECK(sizeof(legacy_result.addr) == hidl_result->addr.size());
-    memcpy(hidl_result->addr.data(), legacy_result.addr,
-           sizeof(legacy_result.addr));
-    hidl_result->burstNum = legacy_result.burst_num;
-    hidl_result->measurementNumber = legacy_result.measurement_number;
-    hidl_result->successNumber = legacy_result.success_number;
-    hidl_result->numberPerBurstPeer = legacy_result.number_per_burst_peer;
-    hidl_result->status = convertLegacyRttStatusToHidl(legacy_result.status);
-    hidl_result->retryAfterDuration = legacy_result.retry_after_duration;
-    hidl_result->type = convertLegacyRttTypeToHidl(legacy_result.type);
-    hidl_result->rssi = legacy_result.rssi;
-    hidl_result->rssiSpread = legacy_result.rssi_spread;
-    if (!convertLegacyWifiRateInfoToHidl(legacy_result.tx_rate,
-                                         &hidl_result->txRate)) {
-        return false;
-    }
-    if (!convertLegacyWifiRateInfoToHidl(legacy_result.rx_rate,
-                                         &hidl_result->rxRate)) {
-        return false;
-    }
-    hidl_result->rtt = legacy_result.rtt;
-    hidl_result->rttSd = legacy_result.rtt_sd;
-    hidl_result->rttSpread = legacy_result.rtt_spread;
-    hidl_result->distanceInMm = legacy_result.distance_mm;
-    hidl_result->distanceSdInMm = legacy_result.distance_sd_mm;
-    hidl_result->distanceSpreadInMm = legacy_result.distance_spread_mm;
-    hidl_result->timeStampInUs = legacy_result.ts;
-    hidl_result->burstDurationInMs = legacy_result.burst_duration;
-    hidl_result->negotiatedBurstNum = legacy_result.negotiated_burst_num;
-    if (legacy_result.LCI &&
-        !convertLegacyIeToHidl(*legacy_result.LCI, &hidl_result->lci)) {
-        return false;
-    }
-    if (legacy_result.LCR &&
-        !convertLegacyIeToHidl(*legacy_result.LCR, &hidl_result->lcr)) {
-        return false;
-    }
-    return true;
-}
-
-bool convertLegacyVectorOfRttResultToHidl(
-    const std::vector<const legacy_hal::wifi_rtt_result*>& legacy_results,
-    std::vector<RttResult>* hidl_results) {
-    if (!hidl_results) {
-        return false;
-    }
-    *hidl_results = {};
-    for (const auto legacy_result : legacy_results) {
-        RttResult hidl_result;
-        if (!convertLegacyRttResultToHidl(*legacy_result, &hidl_result)) {
-            return false;
-        }
-        hidl_results->push_back(hidl_result);
-    }
-    return true;
-}
-}  // namespace hidl_struct_util
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.3/default/hidl_struct_util.h b/wifi/1.3/default/hidl_struct_util.h
deleted file mode 100644
index 3eefd95..0000000
--- a/wifi/1.3/default/hidl_struct_util.h
+++ /dev/null
@@ -1,196 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef HIDL_STRUCT_UTIL_H_
-#define HIDL_STRUCT_UTIL_H_
-
-#include <vector>
-
-#include <android/hardware/wifi/1.0/IWifiChip.h>
-#include <android/hardware/wifi/1.0/types.h>
-#include <android/hardware/wifi/1.2/IWifiChipEventCallback.h>
-#include <android/hardware/wifi/1.2/types.h>
-#include <android/hardware/wifi/1.3/IWifiChip.h>
-#include <android/hardware/wifi/1.3/types.h>
-
-#include "wifi_legacy_hal.h"
-
-/**
- * This file contains a bunch of functions to convert structs from the legacy
- * HAL to HIDL and vice versa.
- * TODO(b/32093047): Add unit tests for these conversion methods in the VTS test
- * suite.
- */
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-namespace hidl_struct_util {
-using namespace android::hardware::wifi::V1_0;
-
-// Chip conversion methods.
-bool convertLegacyFeaturesToHidlChipCapabilities(
-    uint32_t legacy_feature_set, uint32_t legacy_logger_feature_set,
-    uint32_t* hidl_caps);
-bool convertLegacyDebugRingBufferStatusToHidl(
-    const legacy_hal::wifi_ring_buffer_status& legacy_status,
-    WifiDebugRingBufferStatus* hidl_status);
-bool convertLegacyVectorOfDebugRingBufferStatusToHidl(
-    const std::vector<legacy_hal::wifi_ring_buffer_status>& legacy_status_vec,
-    std::vector<WifiDebugRingBufferStatus>* hidl_status_vec);
-bool convertLegacyWakeReasonStatsToHidl(
-    const legacy_hal::WakeReasonStats& legacy_stats,
-    WifiDebugHostWakeReasonStats* hidl_stats);
-legacy_hal::wifi_power_scenario convertHidlTxPowerScenarioToLegacy(
-    V1_1::IWifiChip::TxPowerScenario hidl_scenario);
-legacy_hal::wifi_latency_mode convertHidlLatencyModeToLegacy(
-    V1_3::IWifiChip::LatencyMode hidl_latency_mode);
-legacy_hal::wifi_power_scenario convertHidlTxPowerScenarioToLegacy_1_2(
-    V1_2::IWifiChip::TxPowerScenario hidl_scenario);
-bool convertLegacyWifiMacInfosToHidl(
-    const std::vector<legacy_hal::WifiMacInfo>& legacy_mac_infos,
-    std::vector<V1_2::IWifiChipEventCallback::RadioModeInfo>*
-        hidl_radio_mode_infos);
-
-// STA iface conversion methods.
-bool convertLegacyFeaturesToHidlStaCapabilities(
-    uint32_t legacy_feature_set, uint32_t legacy_logger_feature_set,
-    uint32_t* hidl_caps);
-bool convertLegacyApfCapabilitiesToHidl(
-    const legacy_hal::PacketFilterCapabilities& legacy_caps,
-    StaApfPacketFilterCapabilities* hidl_caps);
-bool convertLegacyGscanCapabilitiesToHidl(
-    const legacy_hal::wifi_gscan_capabilities& legacy_caps,
-    StaBackgroundScanCapabilities* hidl_caps);
-legacy_hal::wifi_band convertHidlWifiBandToLegacy(WifiBand band);
-bool convertHidlGscanParamsToLegacy(
-    const StaBackgroundScanParameters& hidl_scan_params,
-    legacy_hal::wifi_scan_cmd_params* legacy_scan_params);
-// |has_ie_data| indicates whether or not the wifi_scan_result includes 802.11
-// Information Elements (IEs)
-bool convertLegacyGscanResultToHidl(
-    const legacy_hal::wifi_scan_result& legacy_scan_result, bool has_ie_data,
-    StaScanResult* hidl_scan_result);
-// |cached_results| is assumed to not include IEs.
-bool convertLegacyVectorOfCachedGscanResultsToHidl(
-    const std::vector<legacy_hal::wifi_cached_scan_results>&
-        legacy_cached_scan_results,
-    std::vector<StaScanData>* hidl_scan_datas);
-bool convertLegacyLinkLayerStatsToHidl(
-    const legacy_hal::LinkLayerStats& legacy_stats,
-    V1_3::StaLinkLayerStats* hidl_stats);
-bool convertLegacyRoamingCapabilitiesToHidl(
-    const legacy_hal::wifi_roaming_capabilities& legacy_caps,
-    StaRoamingCapabilities* hidl_caps);
-bool convertHidlRoamingConfigToLegacy(
-    const StaRoamingConfig& hidl_config,
-    legacy_hal::wifi_roaming_config* legacy_config);
-legacy_hal::fw_roaming_state_t convertHidlRoamingStateToLegacy(
-    StaRoamingState state);
-bool convertLegacyVectorOfDebugTxPacketFateToHidl(
-    const std::vector<legacy_hal::wifi_tx_report>& legacy_fates,
-    std::vector<WifiDebugTxPacketFateReport>* hidl_fates);
-bool convertLegacyVectorOfDebugRxPacketFateToHidl(
-    const std::vector<legacy_hal::wifi_rx_report>& legacy_fates,
-    std::vector<WifiDebugRxPacketFateReport>* hidl_fates);
-
-// NAN iface conversion methods.
-void convertToWifiNanStatus(legacy_hal::NanStatusType type, const char* str,
-                            size_t max_len, WifiNanStatus* wifiNanStatus);
-bool convertHidlNanEnableRequestToLegacy(
-    const NanEnableRequest& hidl_request,
-    legacy_hal::NanEnableRequest* legacy_request);
-bool convertHidlNanConfigRequestToLegacy(
-    const NanConfigRequest& hidl_request,
-    legacy_hal::NanConfigRequest* legacy_request);
-bool convertHidlNanEnableRequest_1_2ToLegacy(
-    const NanEnableRequest& hidl_request1,
-    const V1_2::NanConfigRequestSupplemental& hidl_request2,
-    legacy_hal::NanEnableRequest* legacy_request);
-bool convertHidlNanConfigRequest_1_2ToLegacy(
-    const NanConfigRequest& hidl_request1,
-    const V1_2::NanConfigRequestSupplemental& hidl_request2,
-    legacy_hal::NanConfigRequest* legacy_request);
-bool convertHidlNanPublishRequestToLegacy(
-    const NanPublishRequest& hidl_request,
-    legacy_hal::NanPublishRequest* legacy_request);
-bool convertHidlNanSubscribeRequestToLegacy(
-    const NanSubscribeRequest& hidl_request,
-    legacy_hal::NanSubscribeRequest* legacy_request);
-bool convertHidlNanTransmitFollowupRequestToLegacy(
-    const NanTransmitFollowupRequest& hidl_request,
-    legacy_hal::NanTransmitFollowupRequest* legacy_request);
-bool convertHidlNanDataPathInitiatorRequestToLegacy(
-    const NanInitiateDataPathRequest& hidl_request,
-    legacy_hal::NanDataPathInitiatorRequest* legacy_request);
-bool convertHidlNanDataPathIndicationResponseToLegacy(
-    const NanRespondToDataPathIndicationRequest& hidl_response,
-    legacy_hal::NanDataPathIndicationResponse* legacy_response);
-bool convertLegacyNanResponseHeaderToHidl(
-    const legacy_hal::NanResponseMsg& legacy_response,
-    WifiNanStatus* wifiNanStatus);
-bool convertLegacyNanCapabilitiesResponseToHidl(
-    const legacy_hal::NanCapabilities& legacy_response,
-    NanCapabilities* hidl_response);
-bool convertLegacyNanMatchIndToHidl(const legacy_hal::NanMatchInd& legacy_ind,
-                                    NanMatchInd* hidl_ind);
-bool convertLegacyNanFollowupIndToHidl(
-    const legacy_hal::NanFollowupInd& legacy_ind,
-    NanFollowupReceivedInd* hidl_ind);
-bool convertLegacyNanDataPathRequestIndToHidl(
-    const legacy_hal::NanDataPathRequestInd& legacy_ind,
-    NanDataPathRequestInd* hidl_ind);
-bool convertLegacyNanDataPathConfirmIndToHidl(
-    const legacy_hal::NanDataPathConfirmInd& legacy_ind,
-    V1_2::NanDataPathConfirmInd* hidl_ind);
-bool convertLegacyNanDataPathScheduleUpdateIndToHidl(
-    const legacy_hal::NanDataPathScheduleUpdateInd& legacy_ind,
-    V1_2::NanDataPathScheduleUpdateInd* hidl_ind);
-
-// RTT controller conversion methods.
-bool convertHidlVectorOfRttConfigToLegacy(
-    const std::vector<RttConfig>& hidl_configs,
-    std::vector<legacy_hal::wifi_rtt_config>* legacy_configs);
-bool convertHidlRttLciInformationToLegacy(
-    const RttLciInformation& hidl_info,
-    legacy_hal::wifi_lci_information* legacy_info);
-bool convertHidlRttLcrInformationToLegacy(
-    const RttLcrInformation& hidl_info,
-    legacy_hal::wifi_lcr_information* legacy_info);
-bool convertHidlRttResponderToLegacy(
-    const RttResponder& hidl_responder,
-    legacy_hal::wifi_rtt_responder* legacy_responder);
-bool convertHidlWifiChannelInfoToLegacy(
-    const WifiChannelInfo& hidl_info,
-    legacy_hal::wifi_channel_info* legacy_info);
-bool convertLegacyRttResponderToHidl(
-    const legacy_hal::wifi_rtt_responder& legacy_responder,
-    RttResponder* hidl_responder);
-bool convertLegacyRttCapabilitiesToHidl(
-    const legacy_hal::wifi_rtt_capabilities& legacy_capabilities,
-    RttCapabilities* hidl_capabilities);
-bool convertLegacyVectorOfRttResultToHidl(
-    const std::vector<const legacy_hal::wifi_rtt_result*>& legacy_results,
-    std::vector<RttResult>* hidl_results);
-}  // namespace hidl_struct_util
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // HIDL_STRUCT_UTIL_H_
diff --git a/wifi/1.3/default/hidl_sync_util.cpp b/wifi/1.3/default/hidl_sync_util.cpp
deleted file mode 100644
index 160727f..0000000
--- a/wifi/1.3/default/hidl_sync_util.cpp
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "hidl_sync_util.h"
-
-namespace {
-std::recursive_mutex g_mutex;
-}  // namespace
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-namespace hidl_sync_util {
-
-std::unique_lock<std::recursive_mutex> acquireGlobalLock() {
-    return std::unique_lock<std::recursive_mutex>{g_mutex};
-}
-
-}  // namespace hidl_sync_util
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.3/default/hidl_sync_util.h b/wifi/1.3/default/hidl_sync_util.h
deleted file mode 100644
index ebfb051..0000000
--- a/wifi/1.3/default/hidl_sync_util.h
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef HIDL_SYNC_UTIL_H_
-#define HIDL_SYNC_UTIL_H_
-
-#include <mutex>
-
-// Utility that provides a global lock to synchronize access between
-// the HIDL thread and the legacy HAL's event loop.
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-namespace hidl_sync_util {
-std::unique_lock<std::recursive_mutex> acquireGlobalLock();
-}  // namespace hidl_sync_util
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-#endif  // HIDL_SYNC_UTIL_H_
diff --git a/wifi/1.3/default/ringbuffer.cpp b/wifi/1.3/default/ringbuffer.cpp
deleted file mode 100644
index 1294c52..0000000
--- a/wifi/1.3/default/ringbuffer.cpp
+++ /dev/null
@@ -1,54 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-
-#include "ringbuffer.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-
-Ringbuffer::Ringbuffer(size_t maxSize) : size_(0), maxSize_(maxSize) {}
-
-void Ringbuffer::append(const std::vector<uint8_t>& input) {
-    if (input.size() == 0) {
-        return;
-    }
-    if (input.size() > maxSize_) {
-        LOG(INFO) << "Oversized message of " << input.size()
-                  << " bytes is dropped";
-        return;
-    }
-    data_.push_back(input);
-    size_ += input.size() * sizeof(input[0]);
-    while (size_ > maxSize_) {
-        size_ -= data_.front().size() * sizeof(data_.front()[0]);
-        data_.pop_front();
-    }
-}
-
-const std::list<std::vector<uint8_t>>& Ringbuffer::getData() const {
-    return data_;
-}
-
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.3/default/ringbuffer.h b/wifi/1.3/default/ringbuffer.h
deleted file mode 100644
index d9f8df6..0000000
--- a/wifi/1.3/default/ringbuffer.h
+++ /dev/null
@@ -1,53 +0,0 @@
-/*
- * Copyright (C) 2018 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef RINGBUFFER_H_
-#define RINGBUFFER_H_
-
-#include <list>
-#include <vector>
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-
-/**
- * Ringbuffer object used to store debug data.
- */
-class Ringbuffer {
-   public:
-    explicit Ringbuffer(size_t maxSize);
-
-    // Appends the data buffer and deletes from the front until buffer is
-    // within |maxSize_|.
-    void append(const std::vector<uint8_t>& input);
-    const std::list<std::vector<uint8_t>>& getData() const;
-
-   private:
-    std::list<std::vector<uint8_t>> data_;
-    size_t size_;
-    size_t maxSize_;
-};
-
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // RINGBUFFER_H_
diff --git a/wifi/1.3/default/service.cpp b/wifi/1.3/default/service.cpp
deleted file mode 100644
index 0b41d28..0000000
--- a/wifi/1.3/default/service.cpp
+++ /dev/null
@@ -1,73 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-#include <hidl/HidlLazyUtils.h>
-#include <hidl/HidlTransportSupport.h>
-#include <utils/Looper.h>
-#include <utils/StrongPointer.h>
-
-#include "wifi.h"
-#include "wifi_feature_flags.h"
-#include "wifi_legacy_hal.h"
-#include "wifi_mode_controller.h"
-
-using android::hardware::configureRpcThreadpool;
-using android::hardware::joinRpcThreadpool;
-using android::hardware::LazyServiceRegistrar;
-using android::hardware::wifi::V1_3::implementation::feature_flags::
-    WifiFeatureFlags;
-using android::hardware::wifi::V1_3::implementation::iface_util::WifiIfaceUtil;
-using android::hardware::wifi::V1_3::implementation::legacy_hal::WifiLegacyHal;
-using android::hardware::wifi::V1_3::implementation::mode_controller::
-    WifiModeController;
-
-#ifdef LAZY_SERVICE
-const bool kLazyService = true;
-#else
-const bool kLazyService = false;
-#endif
-
-int main(int /*argc*/, char** argv) {
-    android::base::InitLogging(
-        argv, android::base::LogdLogger(android::base::SYSTEM));
-    LOG(INFO) << "Wifi Hal is booting up...";
-
-    configureRpcThreadpool(1, true /* callerWillJoin */);
-
-    const auto iface_tool =
-        std::make_shared<android::wifi_system::InterfaceTool>();
-    // Setup hwbinder service
-    android::sp<android::hardware::wifi::V1_3::IWifi> service =
-        new android::hardware::wifi::V1_3::implementation::Wifi(
-            iface_tool, std::make_shared<WifiLegacyHal>(iface_tool),
-            std::make_shared<WifiModeController>(),
-            std::make_shared<WifiIfaceUtil>(iface_tool),
-            std::make_shared<WifiFeatureFlags>());
-    if (kLazyService) {
-        auto registrar = LazyServiceRegistrar::getInstance();
-        CHECK_EQ(registrar.registerService(service), android::NO_ERROR)
-            << "Failed to register wifi HAL";
-    } else {
-        CHECK_EQ(service->registerAsService(), android::NO_ERROR)
-            << "Failed to register wifi HAL";
-    }
-
-    joinRpcThreadpool();
-
-    LOG(INFO) << "Wifi Hal is terminating...";
-    return 0;
-}
diff --git a/wifi/1.3/default/tests/hidl_struct_util_unit_tests.cpp b/wifi/1.3/default/tests/hidl_struct_util_unit_tests.cpp
deleted file mode 100644
index 4e9ebde..0000000
--- a/wifi/1.3/default/tests/hidl_struct_util_unit_tests.cpp
+++ /dev/null
@@ -1,298 +0,0 @@
-/*
- * Copyright (C) 2017, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-#include <android-base/macros.h>
-#include <gmock/gmock.h>
-
-#undef NAN
-#include "hidl_struct_util.h"
-
-using testing::Test;
-
-namespace {
-constexpr uint32_t kMacId1 = 1;
-constexpr uint32_t kMacId2 = 2;
-constexpr uint32_t kIfaceChannel1 = 3;
-constexpr uint32_t kIfaceChannel2 = 5;
-constexpr char kIfaceName1[] = "wlan0";
-constexpr char kIfaceName2[] = "wlan1";
-}  // namespace
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-using namespace android::hardware::wifi::V1_0;
-using ::android::hardware::wifi::V1_0::WifiChannelWidthInMhz;
-
-class HidlStructUtilTest : public Test {};
-
-TEST_F(HidlStructUtilTest, CanConvertLegacyWifiMacInfosToHidlWithOneMac) {
-    std::vector<legacy_hal::WifiMacInfo> legacy_mac_infos;
-    legacy_hal::WifiMacInfo legacy_mac_info1 = {
-        .wlan_mac_id = kMacId1,
-        .mac_band =
-            legacy_hal::WLAN_MAC_5_0_BAND | legacy_hal::WLAN_MAC_2_4_BAND};
-    legacy_hal::WifiIfaceInfo legacy_iface_info1 = {.name = kIfaceName1,
-                                                    .channel = kIfaceChannel1};
-    legacy_hal::WifiIfaceInfo legacy_iface_info2 = {.name = kIfaceName2,
-                                                    .channel = kIfaceChannel2};
-    legacy_mac_info1.iface_infos.push_back(legacy_iface_info1);
-    legacy_mac_info1.iface_infos.push_back(legacy_iface_info2);
-    legacy_mac_infos.push_back(legacy_mac_info1);
-
-    std::vector<V1_2::IWifiChipEventCallback::RadioModeInfo>
-        hidl_radio_mode_infos;
-    ASSERT_TRUE(hidl_struct_util::convertLegacyWifiMacInfosToHidl(
-        legacy_mac_infos, &hidl_radio_mode_infos));
-
-    ASSERT_EQ(1u, hidl_radio_mode_infos.size());
-    auto hidl_radio_mode_info1 = hidl_radio_mode_infos[0];
-    EXPECT_EQ(legacy_mac_info1.wlan_mac_id, hidl_radio_mode_info1.radioId);
-    EXPECT_EQ(WifiBand::BAND_24GHZ_5GHZ, hidl_radio_mode_info1.bandInfo);
-    ASSERT_EQ(2u, hidl_radio_mode_info1.ifaceInfos.size());
-    auto hidl_iface_info1 = hidl_radio_mode_info1.ifaceInfos[0];
-    EXPECT_EQ(legacy_iface_info1.name, hidl_iface_info1.name);
-    EXPECT_EQ(static_cast<uint32_t>(legacy_iface_info1.channel),
-              hidl_iface_info1.channel);
-    auto hidl_iface_info2 = hidl_radio_mode_info1.ifaceInfos[1];
-    EXPECT_EQ(legacy_iface_info2.name, hidl_iface_info2.name);
-    EXPECT_EQ(static_cast<uint32_t>(legacy_iface_info2.channel),
-              hidl_iface_info2.channel);
-}
-
-TEST_F(HidlStructUtilTest, CanConvertLegacyWifiMacInfosToHidlWithTwoMac) {
-    std::vector<legacy_hal::WifiMacInfo> legacy_mac_infos;
-    legacy_hal::WifiMacInfo legacy_mac_info1 = {
-        .wlan_mac_id = kMacId1, .mac_band = legacy_hal::WLAN_MAC_5_0_BAND};
-    legacy_hal::WifiIfaceInfo legacy_iface_info1 = {.name = kIfaceName1,
-                                                    .channel = kIfaceChannel1};
-    legacy_hal::WifiMacInfo legacy_mac_info2 = {
-        .wlan_mac_id = kMacId2, .mac_band = legacy_hal::WLAN_MAC_2_4_BAND};
-    legacy_hal::WifiIfaceInfo legacy_iface_info2 = {.name = kIfaceName2,
-                                                    .channel = kIfaceChannel2};
-    legacy_mac_info1.iface_infos.push_back(legacy_iface_info1);
-    legacy_mac_infos.push_back(legacy_mac_info1);
-    legacy_mac_info2.iface_infos.push_back(legacy_iface_info2);
-    legacy_mac_infos.push_back(legacy_mac_info2);
-
-    std::vector<V1_2::IWifiChipEventCallback::RadioModeInfo>
-        hidl_radio_mode_infos;
-    ASSERT_TRUE(hidl_struct_util::convertLegacyWifiMacInfosToHidl(
-        legacy_mac_infos, &hidl_radio_mode_infos));
-
-    ASSERT_EQ(2u, hidl_radio_mode_infos.size());
-
-    // Find mac info 1.
-    const auto hidl_radio_mode_info1 =
-        std::find_if(hidl_radio_mode_infos.begin(), hidl_radio_mode_infos.end(),
-                     [&legacy_mac_info1](
-                         const V1_2::IWifiChipEventCallback::RadioModeInfo& x) {
-                         return x.radioId == legacy_mac_info1.wlan_mac_id;
-                     });
-    ASSERT_NE(hidl_radio_mode_infos.end(), hidl_radio_mode_info1);
-    EXPECT_EQ(WifiBand::BAND_5GHZ, hidl_radio_mode_info1->bandInfo);
-    ASSERT_EQ(1u, hidl_radio_mode_info1->ifaceInfos.size());
-    auto hidl_iface_info1 = hidl_radio_mode_info1->ifaceInfos[0];
-    EXPECT_EQ(legacy_iface_info1.name, hidl_iface_info1.name);
-    EXPECT_EQ(static_cast<uint32_t>(legacy_iface_info1.channel),
-              hidl_iface_info1.channel);
-
-    // Find mac info 2.
-    const auto hidl_radio_mode_info2 =
-        std::find_if(hidl_radio_mode_infos.begin(), hidl_radio_mode_infos.end(),
-                     [&legacy_mac_info2](
-                         const V1_2::IWifiChipEventCallback::RadioModeInfo& x) {
-                         return x.radioId == legacy_mac_info2.wlan_mac_id;
-                     });
-    ASSERT_NE(hidl_radio_mode_infos.end(), hidl_radio_mode_info2);
-    EXPECT_EQ(WifiBand::BAND_24GHZ, hidl_radio_mode_info2->bandInfo);
-    ASSERT_EQ(1u, hidl_radio_mode_info2->ifaceInfos.size());
-    auto hidl_iface_info2 = hidl_radio_mode_info2->ifaceInfos[0];
-    EXPECT_EQ(legacy_iface_info2.name, hidl_iface_info2.name);
-    EXPECT_EQ(static_cast<uint32_t>(legacy_iface_info2.channel),
-              hidl_iface_info2.channel);
-}
-
-TEST_F(HidlStructUtilTest, canConvertLegacyLinkLayerStatsToHidl) {
-    legacy_hal::LinkLayerStats legacy_stats{};
-    legacy_stats.radios.push_back(legacy_hal::LinkLayerRadioStats{});
-    legacy_stats.radios.push_back(legacy_hal::LinkLayerRadioStats{});
-    legacy_stats.iface.beacon_rx = rand();
-    legacy_stats.iface.rssi_mgmt = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].rx_mpdu = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].tx_mpdu = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].mpdu_lost = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].retries = rand();
-
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].rx_mpdu = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].tx_mpdu = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].mpdu_lost = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].retries = rand();
-
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].rx_mpdu = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].tx_mpdu = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].mpdu_lost = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].retries = rand();
-
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].rx_mpdu = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].tx_mpdu = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].mpdu_lost = rand();
-    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].retries = rand();
-
-    for (auto& radio : legacy_stats.radios) {
-        radio.stats.on_time = rand();
-        radio.stats.tx_time = rand();
-        radio.stats.rx_time = rand();
-        radio.stats.on_time_scan = rand();
-        radio.stats.on_time_nbd = rand();
-        radio.stats.on_time_gscan = rand();
-        radio.stats.on_time_roam_scan = rand();
-        radio.stats.on_time_pno_scan = rand();
-        radio.stats.on_time_hs20 = rand();
-        for (int i = 0; i < 4; i++) {
-            radio.tx_time_per_levels.push_back(rand());
-        }
-
-        legacy_hal::wifi_channel_stat channel_stat1 = {
-            .channel = {legacy_hal::WIFI_CHAN_WIDTH_20, 2437, 2437, 0},
-            .on_time = 0x1111,
-            .cca_busy_time = 0x55,
-        };
-        legacy_hal::wifi_channel_stat channel_stat2 = {
-            .channel = {legacy_hal::WIFI_CHAN_WIDTH_20, 5180, 5180, 0},
-            .on_time = 0x2222,
-            .cca_busy_time = 0x66,
-        };
-        radio.channel_stats.push_back(channel_stat1);
-        radio.channel_stats.push_back(channel_stat2);
-    }
-
-    V1_3::StaLinkLayerStats converted{};
-    hidl_struct_util::convertLegacyLinkLayerStatsToHidl(legacy_stats,
-                                                        &converted);
-    EXPECT_EQ(legacy_stats.iface.beacon_rx, converted.iface.beaconRx);
-    EXPECT_EQ(legacy_stats.iface.rssi_mgmt, converted.iface.avgRssiMgmt);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].rx_mpdu,
-              converted.iface.wmeBePktStats.rxMpdu);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].tx_mpdu,
-              converted.iface.wmeBePktStats.txMpdu);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].mpdu_lost,
-              converted.iface.wmeBePktStats.lostMpdu);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].retries,
-              converted.iface.wmeBePktStats.retries);
-
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].rx_mpdu,
-              converted.iface.wmeBkPktStats.rxMpdu);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].tx_mpdu,
-              converted.iface.wmeBkPktStats.txMpdu);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].mpdu_lost,
-              converted.iface.wmeBkPktStats.lostMpdu);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].retries,
-              converted.iface.wmeBkPktStats.retries);
-
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].rx_mpdu,
-              converted.iface.wmeViPktStats.rxMpdu);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].tx_mpdu,
-              converted.iface.wmeViPktStats.txMpdu);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].mpdu_lost,
-              converted.iface.wmeViPktStats.lostMpdu);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].retries,
-              converted.iface.wmeViPktStats.retries);
-
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].rx_mpdu,
-              converted.iface.wmeVoPktStats.rxMpdu);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].tx_mpdu,
-              converted.iface.wmeVoPktStats.txMpdu);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].mpdu_lost,
-              converted.iface.wmeVoPktStats.lostMpdu);
-    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].retries,
-              converted.iface.wmeVoPktStats.retries);
-
-    EXPECT_EQ(legacy_stats.radios.size(), converted.radios.size());
-    for (size_t i = 0; i < legacy_stats.radios.size(); i++) {
-        EXPECT_EQ(legacy_stats.radios[i].stats.on_time,
-                  converted.radios[i].V1_0.onTimeInMs);
-        EXPECT_EQ(legacy_stats.radios[i].stats.tx_time,
-                  converted.radios[i].V1_0.txTimeInMs);
-        EXPECT_EQ(legacy_stats.radios[i].stats.rx_time,
-                  converted.radios[i].V1_0.rxTimeInMs);
-        EXPECT_EQ(legacy_stats.radios[i].stats.on_time_scan,
-                  converted.radios[i].V1_0.onTimeInMsForScan);
-        EXPECT_EQ(legacy_stats.radios[i].tx_time_per_levels.size(),
-                  converted.radios[i].V1_0.txTimeInMsPerLevel.size());
-        for (size_t j = 0; j < legacy_stats.radios[i].tx_time_per_levels.size();
-             j++) {
-            EXPECT_EQ(legacy_stats.radios[i].tx_time_per_levels[j],
-                      converted.radios[i].V1_0.txTimeInMsPerLevel[j]);
-        }
-        EXPECT_EQ(legacy_stats.radios[i].stats.on_time_nbd,
-                  converted.radios[i].onTimeInMsForNanScan);
-        EXPECT_EQ(legacy_stats.radios[i].stats.on_time_gscan,
-                  converted.radios[i].onTimeInMsForBgScan);
-        EXPECT_EQ(legacy_stats.radios[i].stats.on_time_roam_scan,
-                  converted.radios[i].onTimeInMsForRoamScan);
-        EXPECT_EQ(legacy_stats.radios[i].stats.on_time_pno_scan,
-                  converted.radios[i].onTimeInMsForPnoScan);
-        EXPECT_EQ(legacy_stats.radios[i].stats.on_time_hs20,
-                  converted.radios[i].onTimeInMsForHs20Scan);
-        EXPECT_EQ(legacy_stats.radios[i].channel_stats.size(),
-                  converted.radios[i].channelStats.size());
-        for (size_t k = 0; k < legacy_stats.radios[i].channel_stats.size();
-             k++) {
-            auto& legacy_channel_st = legacy_stats.radios[i].channel_stats[k];
-            EXPECT_EQ(WifiChannelWidthInMhz::WIDTH_20,
-                      converted.radios[i].channelStats[k].channel.width);
-            EXPECT_EQ(WifiChannelInMhz(legacy_channel_st.channel.center_freq),
-                      converted.radios[i].channelStats[k].channel.centerFreq);
-            EXPECT_EQ(WifiChannelInMhz(legacy_channel_st.channel.center_freq0),
-                      converted.radios[i].channelStats[k].channel.centerFreq0);
-            EXPECT_EQ(WifiChannelInMhz(legacy_channel_st.channel.center_freq1),
-                      converted.radios[i].channelStats[k].channel.centerFreq1);
-            EXPECT_EQ(legacy_channel_st.cca_busy_time,
-                      converted.radios[i].channelStats[k].ccaBusyTimeInMs);
-            EXPECT_EQ(legacy_channel_st.on_time,
-                      converted.radios[i].channelStats[k].onTimeInMs);
-        }
-    }
-}
-
-TEST_F(HidlStructUtilTest, CanConvertLegacyFeaturesToHidl) {
-    using HidlChipCaps = V1_3::IWifiChip::ChipCapabilityMask;
-
-    uint32_t hidle_caps;
-
-    uint32_t legacy_feature_set =
-            WIFI_FEATURE_D2D_RTT | WIFI_FEATURE_SET_LATENCY_MODE;
-    uint32_t legacy_logger_feature_set =
-            legacy_hal::WIFI_LOGGER_DRIVER_DUMP_SUPPORTED;
-
-    ASSERT_TRUE(hidl_struct_util::convertLegacyFeaturesToHidlChipCapabilities(
-        legacy_feature_set, legacy_logger_feature_set, &hidle_caps));
-
-    EXPECT_EQ(HidlChipCaps::DEBUG_RING_BUFFER_VENDOR_DATA |
-                  HidlChipCaps::DEBUG_HOST_WAKE_REASON_STATS |
-                  HidlChipCaps::DEBUG_ERROR_ALERTS | HidlChipCaps::D2D_RTT |
-                  HidlChipCaps::SET_LATENCY_MODE |
-                  HidlChipCaps::DEBUG_MEMORY_DRIVER_DUMP,
-              hidle_caps);
-}
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.3/default/tests/mock_wifi_feature_flags.cpp b/wifi/1.3/default/tests/mock_wifi_feature_flags.cpp
deleted file mode 100644
index a393fdc..0000000
--- a/wifi/1.3/default/tests/mock_wifi_feature_flags.cpp
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <gmock/gmock.h>
-
-#include "mock_wifi_feature_flags.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-namespace feature_flags {
-
-MockWifiFeatureFlags::MockWifiFeatureFlags() {}
-
-}  // namespace feature_flags
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.3/default/tests/mock_wifi_feature_flags.h b/wifi/1.3/default/tests/mock_wifi_feature_flags.h
deleted file mode 100644
index ee12b54..0000000
--- a/wifi/1.3/default/tests/mock_wifi_feature_flags.h
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef MOCK_WIFI_FEATURE_FLAGS_H_
-#define MOCK_WIFI_FEATURE_FLAGS_H_
-
-#include <gmock/gmock.h>
-#undef NAN  // This is weird, NAN is defined in bionic/libc/include/math.h:38
-
-#include "wifi_feature_flags.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-namespace feature_flags {
-
-class MockWifiFeatureFlags : public WifiFeatureFlags {
-   public:
-    MockWifiFeatureFlags();
-
-    MOCK_METHOD0(getChipModes, std::vector<V1_0::IWifiChip::ChipMode>());
-    MOCK_METHOD0(isApMacRandomizationDisabled, bool());
-};
-
-}  // namespace feature_flags
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // MOCK_WIFI_FEATURE_FLAGS_H_
diff --git a/wifi/1.3/default/tests/mock_wifi_iface_util.cpp b/wifi/1.3/default/tests/mock_wifi_iface_util.cpp
deleted file mode 100644
index 3d877c0..0000000
--- a/wifi/1.3/default/tests/mock_wifi_iface_util.cpp
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-#include <android-base/macros.h>
-#include <gmock/gmock.h>
-
-#undef NAN  // This is weird, NAN is defined in bionic/libc/include/math.h:38
-#include "mock_wifi_iface_util.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-namespace iface_util {
-
-MockWifiIfaceUtil::MockWifiIfaceUtil(
-    const std::weak_ptr<wifi_system::InterfaceTool> iface_tool)
-    : WifiIfaceUtil(iface_tool) {}
-}  // namespace iface_util
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.3/default/tests/mock_wifi_iface_util.h b/wifi/1.3/default/tests/mock_wifi_iface_util.h
deleted file mode 100644
index 8ec93eb..0000000
--- a/wifi/1.3/default/tests/mock_wifi_iface_util.h
+++ /dev/null
@@ -1,51 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef MOCK_WIFI_IFACE_UTIL_H_
-#define MOCK_WIFI_IFACE_UTIL_H_
-
-#include <gmock/gmock.h>
-
-#include "wifi_iface_util.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-namespace iface_util {
-
-class MockWifiIfaceUtil : public WifiIfaceUtil {
-   public:
-    MockWifiIfaceUtil(
-        const std::weak_ptr<wifi_system::InterfaceTool> iface_tool);
-    MOCK_METHOD1(getFactoryMacAddress,
-                 std::array<uint8_t, 6>(const std::string&));
-    MOCK_METHOD2(setMacAddress,
-                 bool(const std::string&, const std::array<uint8_t, 6>&));
-    MOCK_METHOD0(getOrCreateRandomMacAddress, std::array<uint8_t, 6>());
-    MOCK_METHOD2(registerIfaceEventHandlers,
-                 void(const std::string&, IfaceEventHandlers));
-    MOCK_METHOD1(unregisterIfaceEventHandlers, void(const std::string&));
-};
-}  // namespace iface_util
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // MOCK_WIFI_IFACE_UTIL_H_
diff --git a/wifi/1.3/default/tests/mock_wifi_legacy_hal.cpp b/wifi/1.3/default/tests/mock_wifi_legacy_hal.cpp
deleted file mode 100644
index 0a202c4..0000000
--- a/wifi/1.3/default/tests/mock_wifi_legacy_hal.cpp
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-#include <android-base/macros.h>
-#include <gmock/gmock.h>
-
-#undef NAN  // This is weird, NAN is defined in bionic/libc/include/math.h:38
-#include "mock_wifi_legacy_hal.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-namespace legacy_hal {
-
-MockWifiLegacyHal::MockWifiLegacyHal(
-    const std::weak_ptr<wifi_system::InterfaceTool> iface_tool)
-    : WifiLegacyHal(iface_tool) {}
-}  // namespace legacy_hal
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.3/default/tests/mock_wifi_legacy_hal.h b/wifi/1.3/default/tests/mock_wifi_legacy_hal.h
deleted file mode 100644
index 81cb1de..0000000
--- a/wifi/1.3/default/tests/mock_wifi_legacy_hal.h
+++ /dev/null
@@ -1,68 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef MOCK_WIFI_LEGACY_HAL_H_
-#define MOCK_WIFI_LEGACY_HAL_H_
-
-#include <gmock/gmock.h>
-
-#include "wifi_legacy_hal.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-namespace legacy_hal {
-
-class MockWifiLegacyHal : public WifiLegacyHal {
-   public:
-    MockWifiLegacyHal(
-        const std::weak_ptr<wifi_system::InterfaceTool> iface_tool);
-    MOCK_METHOD0(initialize, wifi_error());
-    MOCK_METHOD0(start, wifi_error());
-    MOCK_METHOD2(stop, wifi_error(std::unique_lock<std::recursive_mutex>*,
-                                  const std::function<void()>&));
-    MOCK_METHOD2(setDfsFlag, wifi_error(const std::string&, bool));
-    MOCK_METHOD2(registerRadioModeChangeCallbackHandler,
-                 wifi_error(const std::string&,
-                            const on_radio_mode_change_callback&));
-    MOCK_METHOD1(getFirmwareVersion, std::pair<wifi_error, std::string>(
-                 const std::string& iface_name));
-    MOCK_METHOD1(getDriverVersion, std::pair<wifi_error, std::string>(
-                 const std::string& iface_name));
-
-    MOCK_METHOD2(selectTxPowerScenario,
-                 wifi_error(const std::string& iface_name,
-                            wifi_power_scenario scenario));
-    MOCK_METHOD1(resetTxPowerScenario,
-                 wifi_error(const std::string& iface_name));
-    MOCK_METHOD2(nanRegisterCallbackHandlers,
-                 wifi_error(const std::string&, const NanCallbackHandlers&));
-    MOCK_METHOD2(nanDisableRequest,
-                 wifi_error(const std::string&, transaction_id));
-    MOCK_METHOD3(nanDataInterfaceDelete,
-                 wifi_error(const std::string&, transaction_id,
-                            const std::string&));
-};
-}  // namespace legacy_hal
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // MOCK_WIFI_LEGACY_HAL_H_
diff --git a/wifi/1.3/default/tests/mock_wifi_mode_controller.cpp b/wifi/1.3/default/tests/mock_wifi_mode_controller.cpp
deleted file mode 100644
index 2b0ea36..0000000
--- a/wifi/1.3/default/tests/mock_wifi_mode_controller.cpp
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-#include <android-base/macros.h>
-#include <gmock/gmock.h>
-
-#undef NAN  // This is weird, NAN is defined in bionic/libc/include/math.h:38
-#include "mock_wifi_mode_controller.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-namespace mode_controller {
-
-MockWifiModeController::MockWifiModeController() : WifiModeController() {}
-}  // namespace mode_controller
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.3/default/tests/mock_wifi_mode_controller.h b/wifi/1.3/default/tests/mock_wifi_mode_controller.h
deleted file mode 100644
index c204059..0000000
--- a/wifi/1.3/default/tests/mock_wifi_mode_controller.h
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef MOCK_WIFI_MODE_CONTROLLER_H_
-#define MOCK_WIFI_MODE_CONTROLLER_H_
-
-#include <gmock/gmock.h>
-
-#include "wifi_mode_controller.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-namespace mode_controller {
-
-class MockWifiModeController : public WifiModeController {
-   public:
-    MockWifiModeController();
-    MOCK_METHOD0(initialize, bool());
-    MOCK_METHOD1(changeFirmwareMode, bool(IfaceType));
-    MOCK_METHOD1(isFirmwareModeChangeNeeded, bool(IfaceType));
-    MOCK_METHOD0(deinitialize, bool());
-};
-}  // namespace mode_controller
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // MOCK_WIFI_MODE_CONTROLLER_H_
diff --git a/wifi/1.3/default/tests/ringbuffer_unit_tests.cpp b/wifi/1.3/default/tests/ringbuffer_unit_tests.cpp
deleted file mode 100644
index 0cf1e4f..0000000
--- a/wifi/1.3/default/tests/ringbuffer_unit_tests.cpp
+++ /dev/null
@@ -1,97 +0,0 @@
-/*
- * Copyright (C) 2018, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <gmock/gmock.h>
-
-#include "ringbuffer.h"
-
-using testing::Return;
-using testing::Test;
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-
-class RingbufferTest : public Test {
-   public:
-    const uint32_t maxBufferSize_ = 10;
-    Ringbuffer buffer_{maxBufferSize_};
-};
-
-TEST_F(RingbufferTest, CreateEmptyBuffer) {
-    ASSERT_TRUE(buffer_.getData().empty());
-}
-
-TEST_F(RingbufferTest, CanUseFullBufferCapacity) {
-    const std::vector<uint8_t> input(maxBufferSize_ / 2, '0');
-    const std::vector<uint8_t> input2(maxBufferSize_ / 2, '1');
-    buffer_.append(input);
-    buffer_.append(input2);
-    ASSERT_EQ(2u, buffer_.getData().size());
-    EXPECT_EQ(input, buffer_.getData().front());
-    EXPECT_EQ(input2, buffer_.getData().back());
-}
-
-TEST_F(RingbufferTest, OldDataIsRemovedOnOverflow) {
-    const std::vector<uint8_t> input(maxBufferSize_ / 2, '0');
-    const std::vector<uint8_t> input2(maxBufferSize_ / 2, '1');
-    const std::vector<uint8_t> input3 = {'G'};
-    buffer_.append(input);
-    buffer_.append(input2);
-    buffer_.append(input3);
-    ASSERT_EQ(2u, buffer_.getData().size());
-    EXPECT_EQ(input2, buffer_.getData().front());
-    EXPECT_EQ(input3, buffer_.getData().back());
-}
-
-TEST_F(RingbufferTest, MultipleOldDataIsRemovedOnOverflow) {
-    const std::vector<uint8_t> input(maxBufferSize_ / 2, '0');
-    const std::vector<uint8_t> input2(maxBufferSize_ / 2, '1');
-    const std::vector<uint8_t> input3(maxBufferSize_, '2');
-    buffer_.append(input);
-    buffer_.append(input2);
-    buffer_.append(input3);
-    ASSERT_EQ(1u, buffer_.getData().size());
-    EXPECT_EQ(input3, buffer_.getData().front());
-}
-
-TEST_F(RingbufferTest, AppendingEmptyBufferDoesNotAddGarbage) {
-    const std::vector<uint8_t> input = {};
-    buffer_.append(input);
-    ASSERT_TRUE(buffer_.getData().empty());
-}
-
-TEST_F(RingbufferTest, OversizedAppendIsDropped) {
-    const std::vector<uint8_t> input(maxBufferSize_ + 1, '0');
-    buffer_.append(input);
-    ASSERT_TRUE(buffer_.getData().empty());
-}
-
-TEST_F(RingbufferTest, OversizedAppendDoesNotDropExistingData) {
-    const std::vector<uint8_t> input(maxBufferSize_, '0');
-    const std::vector<uint8_t> input2(maxBufferSize_ + 1, '1');
-    buffer_.append(input);
-    buffer_.append(input2);
-    ASSERT_EQ(1u, buffer_.getData().size());
-    EXPECT_EQ(input, buffer_.getData().front());
-}
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.3/default/tests/wifi_ap_iface_unit_tests.cpp b/wifi/1.3/default/tests/wifi_ap_iface_unit_tests.cpp
deleted file mode 100644
index 680f534..0000000
--- a/wifi/1.3/default/tests/wifi_ap_iface_unit_tests.cpp
+++ /dev/null
@@ -1,79 +0,0 @@
-/*
- * Copyright (C) 2019, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-#include <android-base/macros.h>
-#include <cutils/properties.h>
-#include <gmock/gmock.h>
-
-#undef NAN  // This is weird, NAN is defined in bionic/libc/include/math.h:38
-#include "wifi_ap_iface.h"
-
-#include "mock_interface_tool.h"
-#include "mock_wifi_feature_flags.h"
-#include "mock_wifi_iface_util.h"
-#include "mock_wifi_legacy_hal.h"
-
-using testing::NiceMock;
-using testing::Return;
-using testing::Test;
-
-namespace {
-constexpr char kIfaceName[] = "mockWlan0";
-}  // namespace
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-
-class WifiApIfaceTest : public Test {
-   protected:
-    std::shared_ptr<NiceMock<wifi_system::MockInterfaceTool>> iface_tool_{
-        new NiceMock<wifi_system::MockInterfaceTool>};
-    std::shared_ptr<NiceMock<legacy_hal::MockWifiLegacyHal>> legacy_hal_{
-        new NiceMock<legacy_hal::MockWifiLegacyHal>(iface_tool_)};
-    std::shared_ptr<NiceMock<iface_util::MockWifiIfaceUtil>> iface_util_{
-        new NiceMock<iface_util::MockWifiIfaceUtil>(iface_tool_)};
-    std::shared_ptr<NiceMock<feature_flags::MockWifiFeatureFlags>>
-        feature_flags_{new NiceMock<feature_flags::MockWifiFeatureFlags>};
-};
-
-TEST_F(WifiApIfaceTest, SetRandomMacAddressIfFeatureEnabled) {
-    EXPECT_CALL(*feature_flags_, isApMacRandomizationDisabled())
-        .WillOnce(testing::Return(false));
-    EXPECT_CALL(*iface_util_, getOrCreateRandomMacAddress())
-        .WillOnce(testing::Return(std::array<uint8_t, 6>{0, 0, 0, 0, 0, 0}));
-    EXPECT_CALL(*iface_util_, setMacAddress(testing::_, testing::_))
-        .WillOnce(testing::Return(true));
-    sp<WifiApIface> ap_iface =
-        new WifiApIface(kIfaceName, legacy_hal_, iface_util_, feature_flags_);
-}
-
-TEST_F(WifiApIfaceTest, DontSetRandomMacAddressIfFeatureDisabled) {
-    EXPECT_CALL(*feature_flags_, isApMacRandomizationDisabled())
-        .WillOnce(testing::Return(true));
-    EXPECT_CALL(*iface_util_, getOrCreateRandomMacAddress()).Times(0);
-    EXPECT_CALL(*iface_util_, setMacAddress(testing::_, testing::_)).Times(0);
-    sp<WifiApIface> ap_iface =
-        new WifiApIface(kIfaceName, legacy_hal_, iface_util_, feature_flags_);
-}
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.3/default/tests/wifi_chip_unit_tests.cpp b/wifi/1.3/default/tests/wifi_chip_unit_tests.cpp
deleted file mode 100644
index d8ce278..0000000
--- a/wifi/1.3/default/tests/wifi_chip_unit_tests.cpp
+++ /dev/null
@@ -1,871 +0,0 @@
-/*
- * Copyright (C) 2017, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-#include <android-base/macros.h>
-#include <cutils/properties.h>
-#include <gmock/gmock.h>
-
-#undef NAN  // This is weird, NAN is defined in bionic/libc/include/math.h:38
-#include "wifi_chip.h"
-
-#include "mock_interface_tool.h"
-#include "mock_wifi_feature_flags.h"
-#include "mock_wifi_iface_util.h"
-#include "mock_wifi_legacy_hal.h"
-#include "mock_wifi_mode_controller.h"
-
-using testing::NiceMock;
-using testing::Return;
-using testing::Test;
-
-namespace {
-using android::hardware::wifi::V1_0::ChipId;
-
-constexpr ChipId kFakeChipId = 5;
-}  // namespace
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-
-class WifiChipTest : public Test {
-   protected:
-    void setupV1IfaceCombination() {
-        // clang-format off
-        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinationsSta = {
-            {{{{IfaceType::STA}, 1}, {{IfaceType::P2P}, 1}}}
-        };
-        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinationsAp = {
-            {{{{IfaceType::AP}, 1}}}
-        };
-        const std::vector<V1_0::IWifiChip::ChipMode> modes = {
-            {feature_flags::chip_mode_ids::kV1Sta, combinationsSta},
-            {feature_flags::chip_mode_ids::kV1Ap, combinationsAp}
-        };
-        // clang-format on
-        EXPECT_CALL(*feature_flags_, getChipModes())
-            .WillRepeatedly(testing::Return(modes));
-    }
-
-    void setupV1_AwareIfaceCombination() {
-        // clang-format off
-        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinationsSta = {
-            {{{{IfaceType::STA}, 1}, {{IfaceType::P2P, IfaceType::NAN}, 1}}}
-        };
-        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinationsAp = {
-            {{{{IfaceType::AP}, 1}}}
-        };
-        const std::vector<V1_0::IWifiChip::ChipMode> modes = {
-            {feature_flags::chip_mode_ids::kV1Sta, combinationsSta},
-            {feature_flags::chip_mode_ids::kV1Ap, combinationsAp}
-        };
-        // clang-format on
-        EXPECT_CALL(*feature_flags_, getChipModes())
-            .WillRepeatedly(testing::Return(modes));
-    }
-
-    void setupV1_AwareDisabledApIfaceCombination() {
-        // clang-format off
-        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinationsSta = {
-            {{{{IfaceType::STA}, 1}, {{IfaceType::P2P, IfaceType::NAN}, 1}}}
-        };
-        const std::vector<V1_0::IWifiChip::ChipMode> modes = {
-            {feature_flags::chip_mode_ids::kV1Sta, combinationsSta}
-        };
-        // clang-format on
-        EXPECT_CALL(*feature_flags_, getChipModes())
-            .WillRepeatedly(testing::Return(modes));
-    }
-
-    void setupV2_AwareIfaceCombination() {
-        // clang-format off
-        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinations = {
-            {{{{IfaceType::STA}, 1}, {{IfaceType::AP}, 1}}},
-            {{{{IfaceType::STA}, 1}, {{IfaceType::P2P, IfaceType::NAN}, 1}}}
-        };
-        const std::vector<V1_0::IWifiChip::ChipMode> modes = {
-            {feature_flags::chip_mode_ids::kV3, combinations}
-        };
-        // clang-format on
-        EXPECT_CALL(*feature_flags_, getChipModes())
-            .WillRepeatedly(testing::Return(modes));
-    }
-
-    void setupV2_AwareDisabledApIfaceCombination() {
-        // clang-format off
-        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinations = {
-            {{{{IfaceType::STA}, 1}, {{IfaceType::P2P, IfaceType::NAN}, 1}}}
-        };
-        const std::vector<V1_0::IWifiChip::ChipMode> modes = {
-            {feature_flags::chip_mode_ids::kV3, combinations}
-        };
-        // clang-format on
-        EXPECT_CALL(*feature_flags_, getChipModes())
-            .WillRepeatedly(testing::Return(modes));
-    }
-
-    void setup_MultiIfaceCombination() {
-        // clang-format off
-        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinations = {
-            {{{{IfaceType::STA}, 3}, {{IfaceType::AP}, 1}}}
-        };
-        const std::vector<V1_0::IWifiChip::ChipMode> modes = {
-            {feature_flags::chip_mode_ids::kV3, combinations}
-        };
-        // clang-format on
-        EXPECT_CALL(*feature_flags_, getChipModes())
-            .WillRepeatedly(testing::Return(modes));
-    }
-
-    void assertNumberOfModes(uint32_t num_modes) {
-        chip_->getAvailableModes(
-            [num_modes](const WifiStatus& status,
-                        const std::vector<WifiChip::ChipMode>& modes) {
-                ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-                // V2_Aware has 1 mode of operation.
-                ASSERT_EQ(num_modes, modes.size());
-            });
-    }
-
-    void findModeAndConfigureForIfaceType(const IfaceType& type) {
-        // This should be aligned with kInvalidModeId in wifi_chip.cpp.
-        ChipModeId mode_id = UINT32_MAX;
-        chip_->getAvailableModes(
-            [&mode_id, &type](const WifiStatus& status,
-                              const std::vector<WifiChip::ChipMode>& modes) {
-                ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-                for (const auto& mode : modes) {
-                    for (const auto& combination : mode.availableCombinations) {
-                        for (const auto& limit : combination.limits) {
-                            if (limit.types.end() !=
-                                std::find(limit.types.begin(),
-                                          limit.types.end(), type)) {
-                                mode_id = mode.id;
-                            }
-                        }
-                    }
-                }
-            });
-        ASSERT_NE(UINT32_MAX, mode_id);
-
-        chip_->configureChip(mode_id, [](const WifiStatus& status) {
-            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-        });
-    }
-
-    // Returns an empty string on error.
-    std::string createIface(const IfaceType& type) {
-        std::string iface_name;
-        if (type == IfaceType::AP) {
-            chip_->createApIface([&iface_name](const WifiStatus& status,
-                                               const sp<IWifiApIface>& iface) {
-                if (WifiStatusCode::SUCCESS == status.code) {
-                    ASSERT_NE(iface.get(), nullptr);
-                    iface->getName([&iface_name](const WifiStatus& status,
-                                                 const hidl_string& name) {
-                        ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-                        iface_name = name.c_str();
-                    });
-                }
-            });
-        } else if (type == IfaceType::NAN) {
-            chip_->createNanIface(
-                [&iface_name](
-                    const WifiStatus& status,
-                    const sp<android::hardware::wifi::V1_0::IWifiNanIface>&
-                        iface) {
-                    if (WifiStatusCode::SUCCESS == status.code) {
-                        ASSERT_NE(iface.get(), nullptr);
-                        iface->getName([&iface_name](const WifiStatus& status,
-                                                     const hidl_string& name) {
-                            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-                            iface_name = name.c_str();
-                        });
-                    }
-                });
-        } else if (type == IfaceType::P2P) {
-            chip_->createP2pIface(
-                [&iface_name](const WifiStatus& status,
-                              const sp<IWifiP2pIface>& iface) {
-                    if (WifiStatusCode::SUCCESS == status.code) {
-                        ASSERT_NE(iface.get(), nullptr);
-                        iface->getName([&iface_name](const WifiStatus& status,
-                                                     const hidl_string& name) {
-                            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-                            iface_name = name.c_str();
-                        });
-                    }
-                });
-        } else if (type == IfaceType::STA) {
-            chip_->createStaIface(
-                [&iface_name](const WifiStatus& status,
-                              const sp<V1_0::IWifiStaIface>& iface) {
-                    if (WifiStatusCode::SUCCESS == status.code) {
-                        ASSERT_NE(iface.get(), nullptr);
-                        iface->getName([&iface_name](const WifiStatus& status,
-                                                     const hidl_string& name) {
-                            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-                            iface_name = name.c_str();
-                        });
-                    }
-                });
-        }
-        return iface_name;
-    }
-
-    void removeIface(const IfaceType& type, const std::string& iface_name) {
-        if (type == IfaceType::AP) {
-            chip_->removeApIface(iface_name, [](const WifiStatus& status) {
-                ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-            });
-        } else if (type == IfaceType::NAN) {
-            chip_->removeNanIface(iface_name, [](const WifiStatus& status) {
-                ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-            });
-        } else if (type == IfaceType::P2P) {
-            chip_->removeP2pIface(iface_name, [](const WifiStatus& status) {
-                ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-            });
-        } else if (type == IfaceType::STA) {
-            chip_->removeStaIface(iface_name, [](const WifiStatus& status) {
-                ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-            });
-        }
-    }
-
-    bool createRttController() {
-        bool success = false;
-        chip_->createRttController(
-            NULL, [&success](const WifiStatus& status,
-                             const sp<IWifiRttController>& rtt) {
-                if (WifiStatusCode::SUCCESS == status.code) {
-                    ASSERT_NE(rtt.get(), nullptr);
-                    success = true;
-                }
-            });
-        return success;
-    }
-
-    sp<WifiChip> chip_;
-    ChipId chip_id_ = kFakeChipId;
-    std::shared_ptr<NiceMock<wifi_system::MockInterfaceTool>> iface_tool_{
-        new NiceMock<wifi_system::MockInterfaceTool>};
-    std::shared_ptr<NiceMock<legacy_hal::MockWifiLegacyHal>> legacy_hal_{
-        new NiceMock<legacy_hal::MockWifiLegacyHal>(iface_tool_)};
-    std::shared_ptr<NiceMock<mode_controller::MockWifiModeController>>
-        mode_controller_{new NiceMock<mode_controller::MockWifiModeController>};
-    std::shared_ptr<NiceMock<iface_util::MockWifiIfaceUtil>> iface_util_{
-        new NiceMock<iface_util::MockWifiIfaceUtil>(iface_tool_)};
-    std::shared_ptr<NiceMock<feature_flags::MockWifiFeatureFlags>>
-        feature_flags_{new NiceMock<feature_flags::MockWifiFeatureFlags>};
-
-   public:
-    void SetUp() override {
-        chip_ = new WifiChip(chip_id_, legacy_hal_, mode_controller_,
-                             iface_util_, feature_flags_);
-
-        EXPECT_CALL(*mode_controller_, changeFirmwareMode(testing::_))
-            .WillRepeatedly(testing::Return(true));
-        EXPECT_CALL(*legacy_hal_, start())
-            .WillRepeatedly(testing::Return(legacy_hal::WIFI_SUCCESS));
-    }
-
-    void TearDown() override {
-        // Restore default system iface names (This should ideally be using a
-        // mock).
-        property_set("wifi.interface", "wlan0");
-        property_set("wifi.concurrent.interface", "wlan1");
-    }
-};
-
-////////// V1 Iface Combinations ////////////
-// Mode 1 - STA + P2P
-// Mode 2 - AP
-class WifiChipV1IfaceCombinationTest : public WifiChipTest {
-   public:
-    void SetUp() override {
-        setupV1IfaceCombination();
-        WifiChipTest::SetUp();
-        // V1 has 2 modes of operation.
-        assertNumberOfModes(2u);
-    }
-};
-
-TEST_F(WifiChipV1IfaceCombinationTest, StaMode_CreateSta_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
-}
-
-TEST_F(WifiChipV1IfaceCombinationTest, StaMode_CreateP2p_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
-}
-
-TEST_F(WifiChipV1IfaceCombinationTest, StaMode_CreateNan_ShouldFail) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
-}
-
-TEST_F(WifiChipV1IfaceCombinationTest, StaMode_CreateAp_ShouldFail) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_TRUE(createIface(IfaceType::AP).empty());
-}
-
-TEST_F(WifiChipV1IfaceCombinationTest, StaMode_CreateStaP2p_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
-}
-
-TEST_F(WifiChipV1IfaceCombinationTest, ApMode_CreateAp_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    ASSERT_EQ(createIface(IfaceType::AP), "wlan0");
-}
-
-TEST_F(WifiChipV1IfaceCombinationTest, ApMode_CreateSta_ShouldFail) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    ASSERT_TRUE(createIface(IfaceType::STA).empty());
-}
-
-TEST_F(WifiChipV1IfaceCombinationTest, ApMode_CreateP2p_ShouldFail) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    ASSERT_TRUE(createIface(IfaceType::STA).empty());
-}
-
-TEST_F(WifiChipV1IfaceCombinationTest, ApMode_CreateNan_ShouldFail) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
-}
-
-////////// V1 + Aware Iface Combinations ////////////
-// Mode 1 - STA + P2P/NAN
-// Mode 2 - AP
-class WifiChipV1_AwareIfaceCombinationTest : public WifiChipTest {
-   public:
-    void SetUp() override {
-        setupV1_AwareIfaceCombination();
-        WifiChipTest::SetUp();
-        // V1_Aware has 2 modes of operation.
-        assertNumberOfModes(2u);
-    }
-};
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest, StaMode_CreateSta_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest, StaMode_CreateP2p_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest, StaMode_CreateNan_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::NAN).empty());
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest, StaMode_CreateAp_ShouldFail) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_TRUE(createIface(IfaceType::AP).empty());
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest,
-       StaMode_CreateStaP2p_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest,
-       StaMode_CreateStaNan_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    ASSERT_FALSE(createIface(IfaceType::NAN).empty());
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest,
-       StaMode_CreateStaP2PNan_ShouldFail) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
-    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest,
-       StaMode_CreateStaNan_AfterP2pRemove_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    const auto p2p_iface_name = createIface(IfaceType::P2P);
-    ASSERT_FALSE(p2p_iface_name.empty());
-    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
-
-    // After removing P2P iface, NAN iface creation should succeed.
-    removeIface(IfaceType::P2P, p2p_iface_name);
-    ASSERT_FALSE(createIface(IfaceType::NAN).empty());
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest,
-       StaMode_CreateStaP2p_AfterNanRemove_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    const auto nan_iface_name = createIface(IfaceType::NAN);
-    ASSERT_FALSE(nan_iface_name.empty());
-    ASSERT_TRUE(createIface(IfaceType::P2P).empty());
-
-    // After removing NAN iface, P2P iface creation should succeed.
-    removeIface(IfaceType::NAN, nan_iface_name);
-    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest, ApMode_CreateAp_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    ASSERT_EQ(createIface(IfaceType::AP), "wlan0");
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest, ApMode_CreateSta_ShouldFail) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    ASSERT_TRUE(createIface(IfaceType::STA).empty());
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest, ApMode_CreateP2p_ShouldFail) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    ASSERT_TRUE(createIface(IfaceType::STA).empty());
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest, ApMode_CreateNan_ShouldFail) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest, RttControllerFlowStaModeNoSta) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_TRUE(createRttController());
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest, RttControllerFlowStaModeWithSta) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    ASSERT_TRUE(createRttController());
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest, RttControllerFlowApToSta) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    const auto ap_iface_name = createIface(IfaceType::AP);
-    ASSERT_FALSE(ap_iface_name.empty());
-    ASSERT_FALSE(createRttController());
-
-    removeIface(IfaceType::AP, ap_iface_name);
-
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_TRUE(createRttController());
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest, SelectTxScenarioWithOnlySta) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
-    EXPECT_CALL(*legacy_hal_, selectTxPowerScenario("wlan0", testing::_))
-        .WillOnce(testing::Return(legacy_hal::WIFI_SUCCESS));
-    chip_->selectTxPowerScenario_1_2(
-        V1_2::IWifiChip::TxPowerScenario::ON_HEAD_CELL_OFF,
-        [](const WifiStatus& status) {
-            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-        });
-}
-
-TEST_F(WifiChipV1_AwareIfaceCombinationTest, SelectTxScenarioWithOnlyAp) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    ASSERT_EQ(createIface(IfaceType::AP), "wlan0");
-    EXPECT_CALL(*legacy_hal_, selectTxPowerScenario("wlan0", testing::_))
-        .WillOnce(testing::Return(legacy_hal::WIFI_SUCCESS));
-    chip_->selectTxPowerScenario_1_2(
-        V1_2::IWifiChip::TxPowerScenario::ON_HEAD_CELL_OFF,
-        [](const WifiStatus& status) {
-            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-        });
-}
-
-////////// V2 + Aware Iface Combinations ////////////
-// Mode 1 - STA + STA/AP
-//        - STA + P2P/NAN
-class WifiChipV2_AwareIfaceCombinationTest : public WifiChipTest {
-   public:
-    void SetUp() override {
-        setupV2_AwareIfaceCombination();
-        WifiChipTest::SetUp();
-        // V2_Aware has 1 mode of operation.
-        assertNumberOfModes(1u);
-    }
-};
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateSta_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateP2p_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateNan_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::NAN).empty());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateAp_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_EQ(createIface(IfaceType::AP), "wlan1");
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateStaSta_ShouldFail) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
-    ASSERT_TRUE(createIface(IfaceType::STA).empty());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateStaAp_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
-    ASSERT_EQ(createIface(IfaceType::AP), "wlan1");
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateApSta_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    ASSERT_EQ(createIface(IfaceType::AP), "wlan1");
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest,
-       CreateSta_AfterStaApRemove_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    const auto sta_iface_name = createIface(IfaceType::STA);
-    ASSERT_FALSE(sta_iface_name.empty());
-    const auto ap_iface_name = createIface(IfaceType::AP);
-    ASSERT_FALSE(ap_iface_name.empty());
-
-    ASSERT_TRUE(createIface(IfaceType::STA).empty());
-
-    // After removing AP & STA iface, STA iface creation should succeed.
-    removeIface(IfaceType::STA, sta_iface_name);
-    removeIface(IfaceType::AP, ap_iface_name);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateStaP2p_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateStaNan_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    ASSERT_FALSE(createIface(IfaceType::NAN).empty());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateStaP2PNan_ShouldFail) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
-    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest,
-       CreateStaNan_AfterP2pRemove_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    const auto p2p_iface_name = createIface(IfaceType::P2P);
-    ASSERT_FALSE(p2p_iface_name.empty());
-    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
-
-    // After removing P2P iface, NAN iface creation should succeed.
-    removeIface(IfaceType::P2P, p2p_iface_name);
-    ASSERT_FALSE(createIface(IfaceType::NAN).empty());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest,
-       CreateStaP2p_AfterNanRemove_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    const auto nan_iface_name = createIface(IfaceType::NAN);
-    ASSERT_FALSE(nan_iface_name.empty());
-    ASSERT_TRUE(createIface(IfaceType::P2P).empty());
-
-    // After removing NAN iface, P2P iface creation should succeed.
-    removeIface(IfaceType::NAN, nan_iface_name);
-    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateApNan_ShouldFail) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    ASSERT_FALSE(createIface(IfaceType::AP).empty());
-    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateApP2p_ShouldFail) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    ASSERT_FALSE(createIface(IfaceType::AP).empty());
-    ASSERT_TRUE(createIface(IfaceType::P2P).empty());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest,
-       StaMode_CreateStaNan_AfterP2pRemove_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    const auto p2p_iface_name = createIface(IfaceType::P2P);
-    ASSERT_FALSE(p2p_iface_name.empty());
-    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
-
-    // After removing P2P iface, NAN iface creation should succeed.
-    removeIface(IfaceType::P2P, p2p_iface_name);
-    ASSERT_FALSE(createIface(IfaceType::NAN).empty());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest,
-       StaMode_CreateStaP2p_AfterNanRemove_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    const auto nan_iface_name = createIface(IfaceType::NAN);
-    ASSERT_FALSE(nan_iface_name.empty());
-    ASSERT_TRUE(createIface(IfaceType::P2P).empty());
-
-    // After removing NAN iface, P2P iface creation should succeed.
-    removeIface(IfaceType::NAN, nan_iface_name);
-    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest,
-       CreateStaAp_EnsureDifferentIfaceNames) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    const auto sta_iface_name = createIface(IfaceType::STA);
-    const auto ap_iface_name = createIface(IfaceType::AP);
-    ASSERT_FALSE(sta_iface_name.empty());
-    ASSERT_FALSE(ap_iface_name.empty());
-    ASSERT_NE(sta_iface_name, ap_iface_name);
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, RttControllerFlowStaModeNoSta) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_TRUE(createRttController());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, RttControllerFlowStaModeWithSta) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    ASSERT_TRUE(createRttController());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, RttControllerFlow) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    ASSERT_FALSE(createIface(IfaceType::AP).empty());
-    ASSERT_TRUE(createRttController());
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, SelectTxScenarioWithOnlySta) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
-    EXPECT_CALL(*legacy_hal_, selectTxPowerScenario("wlan0", testing::_))
-        .WillOnce(testing::Return(legacy_hal::WIFI_SUCCESS));
-    chip_->selectTxPowerScenario_1_2(
-        V1_2::IWifiChip::TxPowerScenario::ON_HEAD_CELL_OFF,
-        [](const WifiStatus& status) {
-            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-        });
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest, SelectTxScenarioWithOnlyAp) {
-    findModeAndConfigureForIfaceType(IfaceType::AP);
-    ASSERT_EQ(createIface(IfaceType::AP), "wlan1");
-    EXPECT_CALL(*legacy_hal_, selectTxPowerScenario("wlan1", testing::_))
-        .WillOnce(testing::Return(legacy_hal::WIFI_SUCCESS));
-    chip_->selectTxPowerScenario_1_2(
-        V1_2::IWifiChip::TxPowerScenario::ON_HEAD_CELL_OFF,
-        [](const WifiStatus& status) {
-            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-        });
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest,
-       InvalidateAndRemoveNanOnStaRemove) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
-
-    // Create NAN iface
-    ASSERT_EQ(createIface(IfaceType::NAN), "wlan0");
-
-    // We should have 1 nan iface.
-    chip_->getNanIfaceNames(
-        [](const WifiStatus& status, const hidl_vec<hidl_string>& iface_names) {
-            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-            ASSERT_EQ(iface_names.size(), 1u);
-            ASSERT_EQ(iface_names[0], "wlan0");
-        });
-    // Retrieve the exact iface object.
-    sp<IWifiNanIface> nan_iface;
-    chip_->getNanIface("wlan0", [&nan_iface](const WifiStatus& status,
-                                             const sp<IWifiNanIface>& iface) {
-        ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-        ASSERT_NE(iface.get(), nullptr);
-        nan_iface = iface;
-    });
-
-    // Remove the STA iface.
-    removeIface(IfaceType::STA, "wlan0");
-    // We should have 0 nan iface now.
-    chip_->getNanIfaceNames(
-        [](const WifiStatus& status, const hidl_vec<hidl_string>& iface_names) {
-            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-            ASSERT_EQ(iface_names.size(), 0u);
-        });
-    // Any operation on the nan iface object should return error now.
-    nan_iface->getName(
-        [](const WifiStatus& status, const std::string& /* iface_name */) {
-            ASSERT_EQ(WifiStatusCode::ERROR_WIFI_IFACE_INVALID, status.code);
-        });
-}
-
-TEST_F(WifiChipV2_AwareIfaceCombinationTest,
-       InvalidateAndRemoveRttControllerOnStaRemove) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
-
-    // Create RTT controller
-    sp<IWifiRttController> rtt_controller;
-    chip_->createRttController(
-        NULL, [&rtt_controller](const WifiStatus& status,
-                                const sp<IWifiRttController>& rtt) {
-            if (WifiStatusCode::SUCCESS == status.code) {
-                ASSERT_NE(rtt.get(), nullptr);
-                rtt_controller = rtt;
-            }
-        });
-
-    // Remove the STA iface.
-    removeIface(IfaceType::STA, "wlan0");
-
-    // Any operation on the rtt controller object should return error now.
-    rtt_controller->getBoundIface(
-        [](const WifiStatus& status, const sp<IWifiIface>& /* iface */) {
-            ASSERT_EQ(WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
-                      status.code);
-        });
-}
-
-////////// V1 Iface Combinations when AP creation is disabled //////////
-class WifiChipV1_AwareDisabledApIfaceCombinationTest : public WifiChipTest {
-   public:
-    void SetUp() override {
-        setupV1_AwareDisabledApIfaceCombination();
-        WifiChipTest::SetUp();
-    }
-};
-
-TEST_F(WifiChipV1_AwareDisabledApIfaceCombinationTest,
-       StaMode_CreateSta_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    ASSERT_TRUE(createIface(IfaceType::AP).empty());
-}
-
-////////// V2 Iface Combinations when AP creation is disabled //////////
-class WifiChipV2_AwareDisabledApIfaceCombinationTest : public WifiChipTest {
-   public:
-    void SetUp() override {
-        setupV2_AwareDisabledApIfaceCombination();
-        WifiChipTest::SetUp();
-    }
-};
-
-TEST_F(WifiChipV2_AwareDisabledApIfaceCombinationTest,
-       CreateSta_ShouldSucceed) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    ASSERT_TRUE(createIface(IfaceType::AP).empty());
-}
-
-////////// Hypothetical Iface Combination with multiple ifaces //////////
-class WifiChip_MultiIfaceTest : public WifiChipTest {
-   public:
-    void SetUp() override {
-        setup_MultiIfaceCombination();
-        WifiChipTest::SetUp();
-    }
-};
-
-TEST_F(WifiChip_MultiIfaceTest, Create3Sta) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    ASSERT_FALSE(createIface(IfaceType::STA).empty());
-    ASSERT_TRUE(createIface(IfaceType::STA).empty());
-}
-
-TEST_F(WifiChip_MultiIfaceTest, CreateStaWithDefaultNames) {
-    property_set("wifi.interface.0", "");
-    property_set("wifi.interface.1", "");
-    property_set("wifi.interface.2", "");
-    property_set("wifi.interface", "");
-    property_set("wifi.concurrent.interface", "");
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan1");
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan2");
-}
-
-TEST_F(WifiChip_MultiIfaceTest, CreateStaWithCustomNames) {
-    property_set("wifi.interface.0", "test0");
-    property_set("wifi.interface.1", "test1");
-    property_set("wifi.interface.2", "test2");
-    property_set("wifi.interface", "bad0");
-    property_set("wifi.concurrent.interface", "bad1");
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_EQ(createIface(IfaceType::STA), "bad0");
-    ASSERT_EQ(createIface(IfaceType::STA), "bad1");
-    ASSERT_EQ(createIface(IfaceType::STA), "test2");
-}
-
-TEST_F(WifiChip_MultiIfaceTest, CreateStaWithCustomAltNames) {
-    property_set("wifi.interface.0", "");
-    property_set("wifi.interface.1", "");
-    property_set("wifi.interface.2", "");
-    property_set("wifi.interface", "testA0");
-    property_set("wifi.concurrent.interface", "testA1");
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    ASSERT_EQ(createIface(IfaceType::STA), "testA0");
-    ASSERT_EQ(createIface(IfaceType::STA), "testA1");
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan2");
-}
-
-TEST_F(WifiChip_MultiIfaceTest, CreateApStartsWithIdx1) {
-    findModeAndConfigureForIfaceType(IfaceType::STA);
-    // First AP will be slotted to wlan1.
-    ASSERT_EQ(createIface(IfaceType::AP), "wlan1");
-    // First STA will be slotted to wlan0.
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
-    // All further STA will be slotted to the remaining free indices.
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan2");
-    ASSERT_EQ(createIface(IfaceType::STA), "wlan3");
-}
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.3/default/tests/wifi_iface_util_unit_tests.cpp b/wifi/1.3/default/tests/wifi_iface_util_unit_tests.cpp
deleted file mode 100644
index 28d23ff..0000000
--- a/wifi/1.3/default/tests/wifi_iface_util_unit_tests.cpp
+++ /dev/null
@@ -1,96 +0,0 @@
-/*
- * Copyright (C) 2019, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-#include <android-base/macros.h>
-#include <gmock/gmock.h>
-
-#undef NAN
-#include "wifi_iface_util.h"
-
-#include "mock_interface_tool.h"
-
-using testing::NiceMock;
-using testing::Test;
-
-namespace {
-constexpr uint8_t kValidUnicastLocallyAssignedMacAddressMask = 0x02;
-constexpr uint8_t kMacAddress[] = {0x02, 0x12, 0x45, 0x56, 0xab, 0xcc};
-constexpr char kIfaceName[] = "test-wlan0";
-
-bool isValidUnicastLocallyAssignedMacAddress(
-    const std::array<uint8_t, 6>& mac_address) {
-    uint8_t first_byte = mac_address[0];
-    return (first_byte & 0x3) == kValidUnicastLocallyAssignedMacAddressMask;
-}
-}  // namespace
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-namespace iface_util {
-class WifiIfaceUtilTest : public Test {
-   protected:
-    std::shared_ptr<NiceMock<wifi_system::MockInterfaceTool>> iface_tool_{
-        new NiceMock<wifi_system::MockInterfaceTool>};
-    WifiIfaceUtil* iface_util_ = new WifiIfaceUtil(iface_tool_);
-};
-
-TEST_F(WifiIfaceUtilTest, GetOrCreateRandomMacAddress) {
-    auto mac_address = iface_util_->getOrCreateRandomMacAddress();
-    ASSERT_TRUE(isValidUnicastLocallyAssignedMacAddress(mac_address));
-
-    // All further calls should return the same MAC address.
-    ASSERT_EQ(mac_address, iface_util_->getOrCreateRandomMacAddress());
-    ASSERT_EQ(mac_address, iface_util_->getOrCreateRandomMacAddress());
-}
-
-TEST_F(WifiIfaceUtilTest, IfaceEventHandlers_SetMacAddress) {
-    std::array<uint8_t, 6> mac_address = {};
-    std::copy(std::begin(kMacAddress), std::end(kMacAddress),
-              std::begin(mac_address));
-    EXPECT_CALL(*iface_tool_, SetMacAddress(testing::_, testing::_))
-        .WillRepeatedly(testing::Return(true));
-    EXPECT_CALL(*iface_tool_, SetUpState(testing::_, testing::_))
-        .WillRepeatedly(testing::Return(true));
-
-    // Register for iface state toggle events.
-    bool callback_invoked = false;
-    iface_util::IfaceEventHandlers event_handlers = {};
-    event_handlers.on_state_toggle_off_on =
-        [&callback_invoked](const std::string& /* iface_name */) {
-            callback_invoked = true;
-        };
-    iface_util_->registerIfaceEventHandlers(kIfaceName, event_handlers);
-    // Invoke setMacAddress and ensure that the cb is invoked.
-    ASSERT_TRUE(iface_util_->setMacAddress(kIfaceName, mac_address));
-    ASSERT_TRUE(callback_invoked);
-
-    // Unregister for iface state toggle events.
-    callback_invoked = false;
-    iface_util_->unregisterIfaceEventHandlers(kIfaceName);
-    // Invoke setMacAddress and ensure that the cb is not invoked.
-    ASSERT_TRUE(iface_util_->setMacAddress(kIfaceName, mac_address));
-    ASSERT_FALSE(callback_invoked);
-}
-}  // namespace iface_util
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.3/default/tests/wifi_nan_iface_unit_tests.cpp b/wifi/1.3/default/tests/wifi_nan_iface_unit_tests.cpp
deleted file mode 100644
index eb6c610..0000000
--- a/wifi/1.3/default/tests/wifi_nan_iface_unit_tests.cpp
+++ /dev/null
@@ -1,148 +0,0 @@
-/*
- * Copyright (C) 2019, The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-#include <android-base/macros.h>
-#include <cutils/properties.h>
-#include <gmock/gmock.h>
-
-#undef NAN  // This is weird, NAN is defined in bionic/libc/include/math.h:38
-#include "wifi_nan_iface.h"
-
-#include "mock_interface_tool.h"
-#include "mock_wifi_feature_flags.h"
-#include "mock_wifi_iface_util.h"
-#include "mock_wifi_legacy_hal.h"
-
-using testing::NiceMock;
-using testing::Return;
-using testing::Test;
-
-namespace {
-constexpr char kIfaceName[] = "mockWlan0";
-}  // namespace
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-
-bool CaptureIfaceEventHandlers(
-    const std::string& /* iface_name*/,
-    iface_util::IfaceEventHandlers in_iface_event_handlers,
-    iface_util::IfaceEventHandlers* out_iface_event_handlers) {
-    *out_iface_event_handlers = in_iface_event_handlers;
-    return true;
-}
-
-class MockNanIfaceEventCallback : public IWifiNanIfaceEventCallback {
-   public:
-    MockNanIfaceEventCallback() = default;
-
-    MOCK_METHOD3(notifyCapabilitiesResponse,
-                 Return<void>(uint16_t, const WifiNanStatus&,
-                              const NanCapabilities&));
-    MOCK_METHOD2(notifyEnableResponse,
-                 Return<void>(uint16_t, const WifiNanStatus&));
-    MOCK_METHOD2(notifyConfigResponse,
-                 Return<void>(uint16_t, const WifiNanStatus&));
-    MOCK_METHOD2(notifyDisableResponse,
-                 Return<void>(uint16_t, const WifiNanStatus&));
-    MOCK_METHOD3(notifyStartPublishResponse,
-                 Return<void>(uint16_t, const WifiNanStatus&, uint8_t));
-    MOCK_METHOD2(notifyStopPublishResponse,
-                 Return<void>(uint16_t, const WifiNanStatus&));
-    MOCK_METHOD3(notifyStartSubscribeResponse,
-                 Return<void>(uint16_t, const WifiNanStatus&, uint8_t));
-    MOCK_METHOD2(notifyStopSubscribeResponse,
-                 Return<void>(uint16_t, const WifiNanStatus&));
-    MOCK_METHOD2(notifyTransmitFollowupResponse,
-                 Return<void>(uint16_t, const WifiNanStatus&));
-    MOCK_METHOD2(notifyCreateDataInterfaceResponse,
-                 Return<void>(uint16_t, const WifiNanStatus&));
-    MOCK_METHOD2(notifyDeleteDataInterfaceResponse,
-                 Return<void>(uint16_t, const WifiNanStatus&));
-    MOCK_METHOD3(notifyInitiateDataPathResponse,
-                 Return<void>(uint16_t, const WifiNanStatus&, uint32_t));
-    MOCK_METHOD2(notifyRespondToDataPathIndicationResponse,
-                 Return<void>(uint16_t, const WifiNanStatus&));
-    MOCK_METHOD2(notifyTerminateDataPathResponse,
-                 Return<void>(uint16_t, const WifiNanStatus&));
-    MOCK_METHOD1(eventClusterEvent, Return<void>(const NanClusterEventInd&));
-    MOCK_METHOD1(eventDisabled, Return<void>(const WifiNanStatus&));
-    MOCK_METHOD2(eventPublishTerminated,
-                 Return<void>(uint8_t, const WifiNanStatus&));
-    MOCK_METHOD2(eventSubscribeTerminated,
-                 Return<void>(uint8_t, const WifiNanStatus&));
-    MOCK_METHOD1(eventMatch, Return<void>(const NanMatchInd&));
-    MOCK_METHOD2(eventMatchExpired, Return<void>(uint8_t, uint32_t));
-    MOCK_METHOD1(eventFollowupReceived,
-                 Return<void>(const NanFollowupReceivedInd&));
-    MOCK_METHOD2(eventTransmitFollowup,
-                 Return<void>(uint16_t, const WifiNanStatus&));
-    MOCK_METHOD1(eventDataPathRequest,
-                 Return<void>(const NanDataPathRequestInd&));
-    MOCK_METHOD1(eventDataPathConfirm,
-                 Return<void>(const NanDataPathConfirmInd&));
-    MOCK_METHOD1(eventDataPathTerminated, Return<void>(uint32_t));
-};
-
-class WifiNanIfaceTest : public Test {
-   protected:
-    std::shared_ptr<NiceMock<wifi_system::MockInterfaceTool>> iface_tool_{
-        new NiceMock<wifi_system::MockInterfaceTool>};
-    std::shared_ptr<NiceMock<legacy_hal::MockWifiLegacyHal>> legacy_hal_{
-        new NiceMock<legacy_hal::MockWifiLegacyHal>(iface_tool_)};
-    std::shared_ptr<NiceMock<iface_util::MockWifiIfaceUtil>> iface_util_{
-        new NiceMock<iface_util::MockWifiIfaceUtil>(iface_tool_)};
-};
-
-TEST_F(WifiNanIfaceTest, IfacEventHandlers_OnStateToggleOffOn) {
-    iface_util::IfaceEventHandlers captured_iface_event_handlers = {};
-    EXPECT_CALL(*legacy_hal_,
-                nanRegisterCallbackHandlers(testing::_, testing::_))
-        .WillOnce(testing::Return(legacy_hal::WIFI_SUCCESS));
-    EXPECT_CALL(*iface_util_,
-                registerIfaceEventHandlers(testing::_, testing::_))
-        .WillOnce(testing::Invoke(
-            bind(CaptureIfaceEventHandlers, std::placeholders::_1,
-                 std::placeholders::_2, &captured_iface_event_handlers)));
-    sp<WifiNanIface> nan_iface =
-        new WifiNanIface(kIfaceName, legacy_hal_, iface_util_);
-
-    // Register a mock nan event callback.
-    sp<NiceMock<MockNanIfaceEventCallback>> mock_event_callback{
-        new NiceMock<MockNanIfaceEventCallback>};
-    nan_iface->registerEventCallback(
-        mock_event_callback, [](const WifiStatus& status) {
-            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
-        });
-    // Ensure that the eventDisabled() function in mock callback will be
-    // invoked.
-    WifiNanStatus expected_nan_status = {
-        NanStatusType::UNSUPPORTED_CONCURRENCY_NAN_DISABLED, ""};
-    EXPECT_CALL(*mock_event_callback, eventDisabled(expected_nan_status))
-        .Times(1);
-
-    // Trigger the iface state toggle callback.
-    captured_iface_event_handlers.on_state_toggle_off_on(kIfaceName);
-}
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.3/default/wifi.cpp b/wifi/1.3/default/wifi.cpp
deleted file mode 100644
index 4229d35..0000000
--- a/wifi/1.3/default/wifi.cpp
+++ /dev/null
@@ -1,220 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-
-#include "hidl_return_util.h"
-#include "wifi.h"
-#include "wifi_status_util.h"
-
-namespace {
-// Chip ID to use for the only supported chip.
-static constexpr android::hardware::wifi::V1_0::ChipId kChipId = 0;
-}  // namespace
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-using hidl_return_util::validateAndCall;
-using hidl_return_util::validateAndCallWithLock;
-
-Wifi::Wifi(
-    const std::shared_ptr<wifi_system::InterfaceTool> iface_tool,
-    const std::shared_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
-    const std::shared_ptr<mode_controller::WifiModeController> mode_controller,
-    const std::shared_ptr<iface_util::WifiIfaceUtil> iface_util,
-    const std::shared_ptr<feature_flags::WifiFeatureFlags> feature_flags)
-    : iface_tool_(iface_tool),
-      legacy_hal_(legacy_hal),
-      mode_controller_(mode_controller),
-      iface_util_(iface_util),
-      feature_flags_(feature_flags),
-      run_state_(RunState::STOPPED) {}
-
-bool Wifi::isValid() {
-    // This object is always valid.
-    return true;
-}
-
-Return<void> Wifi::registerEventCallback(
-    const sp<IWifiEventCallback>& event_callback,
-    registerEventCallback_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_UNKNOWN,
-                           &Wifi::registerEventCallbackInternal, hidl_status_cb,
-                           event_callback);
-}
-
-Return<bool> Wifi::isStarted() { return run_state_ != RunState::STOPPED; }
-
-Return<void> Wifi::start(start_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_UNKNOWN,
-                           &Wifi::startInternal, hidl_status_cb);
-}
-
-Return<void> Wifi::stop(stop_cb hidl_status_cb) {
-    return validateAndCallWithLock(this, WifiStatusCode::ERROR_UNKNOWN,
-                                   &Wifi::stopInternal, hidl_status_cb);
-}
-
-Return<void> Wifi::getChipIds(getChipIds_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_UNKNOWN,
-                           &Wifi::getChipIdsInternal, hidl_status_cb);
-}
-
-Return<void> Wifi::getChip(ChipId chip_id, getChip_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_UNKNOWN,
-                           &Wifi::getChipInternal, hidl_status_cb, chip_id);
-}
-
-Return<void> Wifi::debug(const hidl_handle& handle,
-                         const hidl_vec<hidl_string>&) {
-    LOG(INFO) << "-----------Debug is called----------------";
-    if (!chip_.get()) {
-        return Void();
-    }
-    return chip_->debug(handle, {});
-}
-
-WifiStatus Wifi::registerEventCallbackInternal(
-    const sp<IWifiEventCallback>& event_callback) {
-    if (!event_cb_handler_.addCallback(event_callback)) {
-        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-    }
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-WifiStatus Wifi::startInternal() {
-    if (run_state_ == RunState::STARTED) {
-        return createWifiStatus(WifiStatusCode::SUCCESS);
-    } else if (run_state_ == RunState::STOPPING) {
-        return createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE,
-                                "HAL is stopping");
-    }
-    WifiStatus wifi_status = initializeModeControllerAndLegacyHal();
-    if (wifi_status.code == WifiStatusCode::SUCCESS) {
-        // Create the chip instance once the HAL is started.
-        chip_ = new WifiChip(kChipId, legacy_hal_, mode_controller_,
-                             iface_util_, feature_flags_);
-        run_state_ = RunState::STARTED;
-        for (const auto& callback : event_cb_handler_.getCallbacks()) {
-            if (!callback->onStart().isOk()) {
-                LOG(ERROR) << "Failed to invoke onStart callback";
-            };
-        }
-        LOG(INFO) << "Wifi HAL started";
-    } else {
-        for (const auto& callback : event_cb_handler_.getCallbacks()) {
-            if (!callback->onFailure(wifi_status).isOk()) {
-                LOG(ERROR) << "Failed to invoke onFailure callback";
-            }
-        }
-        LOG(ERROR) << "Wifi HAL start failed";
-        // Clear the event callback objects since the HAL start failed.
-        event_cb_handler_.invalidate();
-    }
-    return wifi_status;
-}
-
-WifiStatus Wifi::stopInternal(
-    /* NONNULL */ std::unique_lock<std::recursive_mutex>* lock) {
-    if (run_state_ == RunState::STOPPED) {
-        return createWifiStatus(WifiStatusCode::SUCCESS);
-    } else if (run_state_ == RunState::STOPPING) {
-        return createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE,
-                                "HAL is stopping");
-    }
-    // Clear the chip object and its child objects since the HAL is now
-    // stopped.
-    if (chip_.get()) {
-        chip_->invalidate();
-        chip_.clear();
-    }
-    WifiStatus wifi_status = stopLegacyHalAndDeinitializeModeController(lock);
-    if (wifi_status.code == WifiStatusCode::SUCCESS) {
-        for (const auto& callback : event_cb_handler_.getCallbacks()) {
-            if (!callback->onStop().isOk()) {
-                LOG(ERROR) << "Failed to invoke onStop callback";
-            };
-        }
-        LOG(INFO) << "Wifi HAL stopped";
-    } else {
-        for (const auto& callback : event_cb_handler_.getCallbacks()) {
-            if (!callback->onFailure(wifi_status).isOk()) {
-                LOG(ERROR) << "Failed to invoke onFailure callback";
-            }
-        }
-        LOG(ERROR) << "Wifi HAL stop failed";
-    }
-    // Clear the event callback objects since the HAL is now stopped.
-    event_cb_handler_.invalidate();
-    return wifi_status;
-}
-
-std::pair<WifiStatus, std::vector<ChipId>> Wifi::getChipIdsInternal() {
-    std::vector<ChipId> chip_ids;
-    if (chip_.get()) {
-        chip_ids.emplace_back(kChipId);
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), std::move(chip_ids)};
-}
-
-std::pair<WifiStatus, sp<IWifiChip>> Wifi::getChipInternal(ChipId chip_id) {
-    if (!chip_.get()) {
-        return {createWifiStatus(WifiStatusCode::ERROR_NOT_STARTED), nullptr};
-    }
-    if (chip_id != kChipId) {
-        return {createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS), nullptr};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), chip_};
-}
-
-WifiStatus Wifi::initializeModeControllerAndLegacyHal() {
-    if (!mode_controller_->initialize()) {
-        LOG(ERROR) << "Failed to initialize firmware mode controller";
-        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-    }
-    legacy_hal::wifi_error legacy_status = legacy_hal_->initialize();
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        LOG(ERROR) << "Failed to initialize legacy HAL: "
-                   << legacyErrorToString(legacy_status);
-        return createWifiStatusFromLegacyError(legacy_status);
-    }
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-WifiStatus Wifi::stopLegacyHalAndDeinitializeModeController(
-    /* NONNULL */ std::unique_lock<std::recursive_mutex>* lock) {
-    run_state_ = RunState::STOPPING;
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_->stop(lock, [&]() { run_state_ = RunState::STOPPED; });
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        LOG(ERROR) << "Failed to stop legacy HAL: "
-                   << legacyErrorToString(legacy_status);
-        return createWifiStatusFromLegacyError(legacy_status);
-    }
-    if (!mode_controller_->deinitialize()) {
-        LOG(ERROR) << "Failed to deinitialize firmware mode controller";
-        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-    }
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.3/default/wifi.h b/wifi/1.3/default/wifi.h
deleted file mode 100644
index 1c2a154..0000000
--- a/wifi/1.3/default/wifi.h
+++ /dev/null
@@ -1,100 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef WIFI_H_
-#define WIFI_H_
-
-#include <functional>
-
-#include <android-base/macros.h>
-#include <android/hardware/wifi/1.3/IWifi.h>
-#include <utils/Looper.h>
-
-#include "hidl_callback_util.h"
-#include "wifi_chip.h"
-#include "wifi_feature_flags.h"
-#include "wifi_legacy_hal.h"
-#include "wifi_mode_controller.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-
-/**
- * Root HIDL interface object used to control the Wifi HAL.
- */
-class Wifi : public V1_3::IWifi {
-   public:
-    Wifi(const std::shared_ptr<wifi_system::InterfaceTool> iface_tool,
-         const std::shared_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
-         const std::shared_ptr<mode_controller::WifiModeController>
-             mode_controller,
-         const std::shared_ptr<iface_util::WifiIfaceUtil> iface_util,
-         const std::shared_ptr<feature_flags::WifiFeatureFlags> feature_flags);
-
-    bool isValid();
-
-    // HIDL methods exposed.
-    Return<void> registerEventCallback(
-        const sp<IWifiEventCallback>& event_callback,
-        registerEventCallback_cb hidl_status_cb) override;
-    Return<bool> isStarted() override;
-    Return<void> start(start_cb hidl_status_cb) override;
-    Return<void> stop(stop_cb hidl_status_cb) override;
-    Return<void> getChipIds(getChipIds_cb hidl_status_cb) override;
-    Return<void> getChip(ChipId chip_id, getChip_cb hidl_status_cb) override;
-    Return<void> debug(const hidl_handle& handle,
-                       const hidl_vec<hidl_string>& options) override;
-
-   private:
-    enum class RunState { STOPPED, STARTED, STOPPING };
-
-    // Corresponding worker functions for the HIDL methods.
-    WifiStatus registerEventCallbackInternal(
-        const sp<IWifiEventCallback>& event_callback);
-    WifiStatus startInternal();
-    WifiStatus stopInternal(std::unique_lock<std::recursive_mutex>* lock);
-    std::pair<WifiStatus, std::vector<ChipId>> getChipIdsInternal();
-    std::pair<WifiStatus, sp<IWifiChip>> getChipInternal(ChipId chip_id);
-
-    WifiStatus initializeModeControllerAndLegacyHal();
-    WifiStatus stopLegacyHalAndDeinitializeModeController(
-        std::unique_lock<std::recursive_mutex>* lock);
-
-    // Instance is created in this root level |IWifi| HIDL interface object
-    // and shared with all the child HIDL interface objects.
-    std::shared_ptr<wifi_system::InterfaceTool> iface_tool_;
-    std::shared_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
-    std::shared_ptr<mode_controller::WifiModeController> mode_controller_;
-    std::shared_ptr<iface_util::WifiIfaceUtil> iface_util_;
-    std::shared_ptr<feature_flags::WifiFeatureFlags> feature_flags_;
-    RunState run_state_;
-    sp<WifiChip> chip_;
-    hidl_callback_util::HidlCallbackHandler<IWifiEventCallback>
-        event_cb_handler_;
-
-    DISALLOW_COPY_AND_ASSIGN(Wifi);
-};
-
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // WIFI_H_
diff --git a/wifi/1.3/default/wifi_ap_iface.cpp b/wifi/1.3/default/wifi_ap_iface.cpp
deleted file mode 100644
index 9a8681a..0000000
--- a/wifi/1.3/default/wifi_ap_iface.cpp
+++ /dev/null
@@ -1,118 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-
-#include "hidl_return_util.h"
-#include "hidl_struct_util.h"
-#include "wifi_ap_iface.h"
-#include "wifi_status_util.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-using hidl_return_util::validateAndCall;
-
-WifiApIface::WifiApIface(
-    const std::string& ifname,
-    const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
-    const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util,
-    const std::weak_ptr<feature_flags::WifiFeatureFlags> feature_flags)
-    : ifname_(ifname),
-      legacy_hal_(legacy_hal),
-      iface_util_(iface_util),
-      feature_flags_(feature_flags),
-      is_valid_(true) {
-    if (feature_flags_.lock()->isApMacRandomizationDisabled()) {
-        LOG(INFO) << "AP MAC randomization disabled";
-        return;
-    }
-    LOG(INFO) << "AP MAC randomization enabled";
-    // Set random MAC address
-    std::array<uint8_t, 6> randomized_mac =
-        iface_util_.lock()->getOrCreateRandomMacAddress();
-    bool status = iface_util_.lock()->setMacAddress(ifname_, randomized_mac);
-    if (!status) {
-        LOG(ERROR) << "Failed to set random mac address";
-    }
-}
-
-void WifiApIface::invalidate() {
-    legacy_hal_.reset();
-    is_valid_ = false;
-}
-
-bool WifiApIface::isValid() { return is_valid_; }
-
-std::string WifiApIface::getName() { return ifname_; }
-
-Return<void> WifiApIface::getName(getName_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiApIface::getNameInternal, hidl_status_cb);
-}
-
-Return<void> WifiApIface::getType(getType_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiApIface::getTypeInternal, hidl_status_cb);
-}
-
-Return<void> WifiApIface::setCountryCode(const hidl_array<int8_t, 2>& code,
-                                         setCountryCode_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiApIface::setCountryCodeInternal, hidl_status_cb,
-                           code);
-}
-
-Return<void> WifiApIface::getValidFrequenciesForBand(
-    WifiBand band, getValidFrequenciesForBand_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiApIface::getValidFrequenciesForBandInternal,
-                           hidl_status_cb, band);
-}
-
-std::pair<WifiStatus, std::string> WifiApIface::getNameInternal() {
-    return {createWifiStatus(WifiStatusCode::SUCCESS), ifname_};
-}
-
-std::pair<WifiStatus, IfaceType> WifiApIface::getTypeInternal() {
-    return {createWifiStatus(WifiStatusCode::SUCCESS), IfaceType::AP};
-}
-
-WifiStatus WifiApIface::setCountryCodeInternal(
-    const std::array<int8_t, 2>& code) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->setCountryCode(ifname_, code);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-std::pair<WifiStatus, std::vector<WifiChannelInMhz>>
-WifiApIface::getValidFrequenciesForBandInternal(WifiBand band) {
-    static_assert(sizeof(WifiChannelInMhz) == sizeof(uint32_t),
-                  "Size mismatch");
-    legacy_hal::wifi_error legacy_status;
-    std::vector<uint32_t> valid_frequencies;
-    std::tie(legacy_status, valid_frequencies) =
-        legacy_hal_.lock()->getValidFrequenciesForBand(
-            ifname_, hidl_struct_util::convertHidlWifiBandToLegacy(band));
-    return {createWifiStatusFromLegacyError(legacy_status), valid_frequencies};
-}
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.3/default/wifi_ap_iface.h b/wifi/1.3/default/wifi_ap_iface.h
deleted file mode 100644
index 98c5c9c..0000000
--- a/wifi/1.3/default/wifi_ap_iface.h
+++ /dev/null
@@ -1,80 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef WIFI_AP_IFACE_H_
-#define WIFI_AP_IFACE_H_
-
-#include <android-base/macros.h>
-#include <android/hardware/wifi/1.0/IWifiApIface.h>
-
-#include "wifi_feature_flags.h"
-#include "wifi_iface_util.h"
-#include "wifi_legacy_hal.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-using namespace android::hardware::wifi::V1_0;
-
-/**
- * HIDL interface object used to control a AP Iface instance.
- */
-class WifiApIface : public V1_0::IWifiApIface {
-   public:
-    WifiApIface(
-        const std::string& ifname,
-        const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
-        const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util,
-        const std::weak_ptr<feature_flags::WifiFeatureFlags> feature_flags);
-    // Refer to |WifiChip::invalidate()|.
-    void invalidate();
-    bool isValid();
-    std::string getName();
-
-    // HIDL methods exposed.
-    Return<void> getName(getName_cb hidl_status_cb) override;
-    Return<void> getType(getType_cb hidl_status_cb) override;
-    Return<void> setCountryCode(const hidl_array<int8_t, 2>& code,
-                                setCountryCode_cb hidl_status_cb) override;
-    Return<void> getValidFrequenciesForBand(
-        WifiBand band, getValidFrequenciesForBand_cb hidl_status_cb) override;
-
-   private:
-    // Corresponding worker functions for the HIDL methods.
-    std::pair<WifiStatus, std::string> getNameInternal();
-    std::pair<WifiStatus, IfaceType> getTypeInternal();
-    WifiStatus setCountryCodeInternal(const std::array<int8_t, 2>& code);
-    std::pair<WifiStatus, std::vector<WifiChannelInMhz>>
-    getValidFrequenciesForBandInternal(WifiBand band);
-
-    std::string ifname_;
-    std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
-    std::weak_ptr<iface_util::WifiIfaceUtil> iface_util_;
-    std::weak_ptr<feature_flags::WifiFeatureFlags> feature_flags_;
-    bool is_valid_;
-
-    DISALLOW_COPY_AND_ASSIGN(WifiApIface);
-};
-
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // WIFI_AP_IFACE_H_
diff --git a/wifi/1.3/default/wifi_chip.cpp b/wifi/1.3/default/wifi_chip.cpp
deleted file mode 100644
index e9991dc..0000000
--- a/wifi/1.3/default/wifi_chip.cpp
+++ /dev/null
@@ -1,1545 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <fcntl.h>
-
-#include <android-base/logging.h>
-#include <android-base/unique_fd.h>
-#include <cutils/properties.h>
-#include <sys/stat.h>
-#include <sys/sysmacros.h>
-
-#include "hidl_return_util.h"
-#include "hidl_struct_util.h"
-#include "wifi_chip.h"
-#include "wifi_status_util.h"
-
-namespace {
-using android::sp;
-using android::base::unique_fd;
-using android::hardware::hidl_string;
-using android::hardware::hidl_vec;
-using android::hardware::wifi::V1_0::ChipModeId;
-using android::hardware::wifi::V1_0::IfaceType;
-using android::hardware::wifi::V1_0::IWifiChip;
-
-constexpr char kCpioMagic[] = "070701";
-constexpr size_t kMaxBufferSizeBytes = 1024 * 1024 * 3;
-constexpr uint32_t kMaxRingBufferFileAgeSeconds = 60 * 60 * 10;
-constexpr uint32_t kMaxRingBufferFileNum = 20;
-constexpr char kTombstoneFolderPath[] = "/data/vendor/tombstones/wifi/";
-constexpr char kActiveWlanIfaceNameProperty[] = "wifi.active.interface";
-constexpr char kNoActiveWlanIfaceNamePropertyValue[] = "";
-constexpr unsigned kMaxWlanIfaces = 5;
-
-template <typename Iface>
-void invalidateAndClear(std::vector<sp<Iface>>& ifaces, sp<Iface> iface) {
-    iface->invalidate();
-    ifaces.erase(std::remove(ifaces.begin(), ifaces.end(), iface),
-                 ifaces.end());
-}
-
-template <typename Iface>
-void invalidateAndClearAll(std::vector<sp<Iface>>& ifaces) {
-    for (const auto& iface : ifaces) {
-        iface->invalidate();
-    }
-    ifaces.clear();
-}
-
-template <typename Iface>
-std::vector<hidl_string> getNames(std::vector<sp<Iface>>& ifaces) {
-    std::vector<hidl_string> names;
-    for (const auto& iface : ifaces) {
-        names.emplace_back(iface->getName());
-    }
-    return names;
-}
-
-template <typename Iface>
-sp<Iface> findUsingName(std::vector<sp<Iface>>& ifaces,
-                        const std::string& name) {
-    std::vector<hidl_string> names;
-    for (const auto& iface : ifaces) {
-        if (name == iface->getName()) {
-            return iface;
-        }
-    }
-    return nullptr;
-}
-
-std::string getWlanIfaceName(unsigned idx) {
-    if (idx >= kMaxWlanIfaces) {
-        CHECK(false) << "Requested interface beyond wlan" << kMaxWlanIfaces;
-        return {};
-    }
-
-    std::array<char, PROPERTY_VALUE_MAX> buffer;
-    if (idx == 0 || idx == 1) {
-        const char* altPropName =
-            (idx == 0) ? "wifi.interface" : "wifi.concurrent.interface";
-        auto res = property_get(altPropName, buffer.data(), nullptr);
-        if (res > 0) return buffer.data();
-    }
-    std::string propName = "wifi.interface." + std::to_string(idx);
-    auto res = property_get(propName.c_str(), buffer.data(), nullptr);
-    if (res > 0) return buffer.data();
-
-    return "wlan" + std::to_string(idx);
-}
-
-std::string getP2pIfaceName() {
-    std::array<char, PROPERTY_VALUE_MAX> buffer;
-    property_get("wifi.direct.interface", buffer.data(), "p2p0");
-    return buffer.data();
-}
-
-void setActiveWlanIfaceNameProperty(const std::string& ifname) {
-    auto res = property_set(kActiveWlanIfaceNameProperty, ifname.data());
-    if (res != 0) {
-        PLOG(ERROR) << "Failed to set active wlan iface name property";
-    }
-}
-
-// delete files that meet either conditions:
-// 1. older than a predefined time in the wifi tombstone dir.
-// 2. Files in excess to a predefined amount, starting from the oldest ones
-bool removeOldFilesInternal() {
-    time_t now = time(0);
-    const time_t delete_files_before = now - kMaxRingBufferFileAgeSeconds;
-    std::unique_ptr<DIR, decltype(&closedir)> dir_dump(
-        opendir(kTombstoneFolderPath), closedir);
-    if (!dir_dump) {
-        PLOG(ERROR) << "Failed to open directory";
-        return false;
-    }
-    struct dirent* dp;
-    bool success = true;
-    std::list<std::pair<const time_t, std::string>> valid_files;
-    while ((dp = readdir(dir_dump.get()))) {
-        if (dp->d_type != DT_REG) {
-            continue;
-        }
-        std::string cur_file_name(dp->d_name);
-        struct stat cur_file_stat;
-        std::string cur_file_path = kTombstoneFolderPath + cur_file_name;
-        if (stat(cur_file_path.c_str(), &cur_file_stat) == -1) {
-            PLOG(ERROR) << "Failed to get file stat for " << cur_file_path;
-            success = false;
-            continue;
-        }
-        const time_t cur_file_time = cur_file_stat.st_mtime;
-        valid_files.push_back(
-            std::pair<const time_t, std::string>(cur_file_time, cur_file_path));
-    }
-    valid_files.sort();  // sort the list of files by last modified time from
-                         // small to big.
-    uint32_t cur_file_count = valid_files.size();
-    for (auto cur_file : valid_files) {
-        if (cur_file_count > kMaxRingBufferFileNum ||
-            cur_file.first < delete_files_before) {
-            if (unlink(cur_file.second.c_str()) != 0) {
-                PLOG(ERROR) << "Error deleting file";
-                success = false;
-            }
-            cur_file_count--;
-        } else {
-            break;
-        }
-    }
-    return success;
-}
-
-// Helper function for |cpioArchiveFilesInDir|
-bool cpioWriteHeader(int out_fd, struct stat& st, const char* file_name,
-                     size_t file_name_len) {
-    std::array<char, 32 * 1024> read_buf;
-    ssize_t llen =
-        sprintf(read_buf.data(),
-                "%s%08X%08X%08X%08X%08X%08X%08X%08X%08X%08X%08X%08X%08X",
-                kCpioMagic, static_cast<int>(st.st_ino), st.st_mode, st.st_uid,
-                st.st_gid, static_cast<int>(st.st_nlink),
-                static_cast<int>(st.st_mtime), static_cast<int>(st.st_size),
-                major(st.st_dev), minor(st.st_dev), major(st.st_rdev),
-                minor(st.st_rdev), static_cast<uint32_t>(file_name_len), 0);
-    if (write(out_fd, read_buf.data(), llen) == -1) {
-        PLOG(ERROR) << "Error writing cpio header to file " << file_name;
-        return false;
-    }
-    if (write(out_fd, file_name, file_name_len) == -1) {
-        PLOG(ERROR) << "Error writing filename to file " << file_name;
-        return false;
-    }
-
-    // NUL Pad header up to 4 multiple bytes.
-    llen = (llen + file_name_len) % 4;
-    if (llen != 0) {
-        const uint32_t zero = 0;
-        if (write(out_fd, &zero, 4 - llen) == -1) {
-            PLOG(ERROR) << "Error padding 0s to file " << file_name;
-            return false;
-        }
-    }
-    return true;
-}
-
-// Helper function for |cpioArchiveFilesInDir|
-size_t cpioWriteFileContent(int fd_read, int out_fd, struct stat& st) {
-    // writing content of file
-    std::array<char, 32 * 1024> read_buf;
-    ssize_t llen = st.st_size;
-    size_t n_error = 0;
-    while (llen > 0) {
-        ssize_t bytes_read = read(fd_read, read_buf.data(), read_buf.size());
-        if (bytes_read == -1) {
-            PLOG(ERROR) << "Error reading file";
-            return ++n_error;
-        }
-        llen -= bytes_read;
-        if (write(out_fd, read_buf.data(), bytes_read) == -1) {
-            PLOG(ERROR) << "Error writing data to file";
-            return ++n_error;
-        }
-        if (bytes_read == 0) {  // this should never happen, but just in case
-                                // to unstuck from while loop
-            PLOG(ERROR) << "Unexpected read result";
-            n_error++;
-            break;
-        }
-    }
-    llen = st.st_size % 4;
-    if (llen != 0) {
-        const uint32_t zero = 0;
-        if (write(out_fd, &zero, 4 - llen) == -1) {
-            PLOG(ERROR) << "Error padding 0s to file";
-            return ++n_error;
-        }
-    }
-    return n_error;
-}
-
-// Helper function for |cpioArchiveFilesInDir|
-bool cpioWriteFileTrailer(int out_fd) {
-    std::array<char, 4096> read_buf;
-    read_buf.fill(0);
-    if (write(out_fd, read_buf.data(),
-              sprintf(read_buf.data(), "070701%040X%056X%08XTRAILER!!!", 1,
-                      0x0b, 0) +
-                  4) == -1) {
-        PLOG(ERROR) << "Error writing trailing bytes";
-        return false;
-    }
-    return true;
-}
-
-// Archives all files in |input_dir| and writes result into |out_fd|
-// Logic obtained from //external/toybox/toys/posix/cpio.c "Output cpio archive"
-// portion
-size_t cpioArchiveFilesInDir(int out_fd, const char* input_dir) {
-    struct dirent* dp;
-    size_t n_error = 0;
-    std::unique_ptr<DIR, decltype(&closedir)> dir_dump(opendir(input_dir),
-                                                       closedir);
-    if (!dir_dump) {
-        PLOG(ERROR) << "Failed to open directory";
-        return ++n_error;
-    }
-    while ((dp = readdir(dir_dump.get()))) {
-        if (dp->d_type != DT_REG) {
-            continue;
-        }
-        std::string cur_file_name(dp->d_name);
-        // string.size() does not include the null terminator. The cpio FreeBSD
-        // file header expects the null character to be included in the length.
-        const size_t file_name_len = cur_file_name.size() + 1;
-        struct stat st;
-        const std::string cur_file_path = kTombstoneFolderPath + cur_file_name;
-        if (stat(cur_file_path.c_str(), &st) == -1) {
-            PLOG(ERROR) << "Failed to get file stat for " << cur_file_path;
-            n_error++;
-            continue;
-        }
-        const int fd_read = open(cur_file_path.c_str(), O_RDONLY);
-        if (fd_read == -1) {
-            PLOG(ERROR) << "Failed to open file " << cur_file_path;
-            n_error++;
-            continue;
-        }
-        unique_fd file_auto_closer(fd_read);
-        if (!cpioWriteHeader(out_fd, st, cur_file_name.c_str(),
-                             file_name_len)) {
-            return ++n_error;
-        }
-        size_t write_error = cpioWriteFileContent(fd_read, out_fd, st);
-        if (write_error) {
-            return n_error + write_error;
-        }
-    }
-    if (!cpioWriteFileTrailer(out_fd)) {
-        return ++n_error;
-    }
-    return n_error;
-}
-
-// Helper function to create a non-const char*.
-std::vector<char> makeCharVec(const std::string& str) {
-    std::vector<char> vec(str.size() + 1);
-    vec.assign(str.begin(), str.end());
-    vec.push_back('\0');
-    return vec;
-}
-
-}  // namespace
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-using hidl_return_util::validateAndCall;
-using hidl_return_util::validateAndCallWithLock;
-
-WifiChip::WifiChip(
-    ChipId chip_id, const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
-    const std::weak_ptr<mode_controller::WifiModeController> mode_controller,
-    const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util,
-    const std::weak_ptr<feature_flags::WifiFeatureFlags> feature_flags)
-    : chip_id_(chip_id),
-      legacy_hal_(legacy_hal),
-      mode_controller_(mode_controller),
-      iface_util_(iface_util),
-      feature_flags_(feature_flags),
-      is_valid_(true),
-      current_mode_id_(feature_flags::chip_mode_ids::kInvalid),
-      modes_(feature_flags.lock()->getChipModes()),
-      debug_ring_buffer_cb_registered_(false) {
-    setActiveWlanIfaceNameProperty(kNoActiveWlanIfaceNamePropertyValue);
-}
-
-void WifiChip::invalidate() {
-    if (!writeRingbufferFilesInternal()) {
-        LOG(ERROR) << "Error writing files to flash";
-    }
-    invalidateAndRemoveAllIfaces();
-    setActiveWlanIfaceNameProperty(kNoActiveWlanIfaceNamePropertyValue);
-    legacy_hal_.reset();
-    event_cb_handler_.invalidate();
-    is_valid_ = false;
-}
-
-bool WifiChip::isValid() { return is_valid_; }
-
-std::set<sp<V1_2::IWifiChipEventCallback>> WifiChip::getEventCallbacks() {
-    return event_cb_handler_.getCallbacks();
-}
-
-Return<void> WifiChip::getId(getId_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getIdInternal, hidl_status_cb);
-}
-
-// Deprecated support for this callback
-Return<void> WifiChip::registerEventCallback(
-    const sp<V1_0::IWifiChipEventCallback>& event_callback,
-    registerEventCallback_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::registerEventCallbackInternal,
-                           hidl_status_cb, event_callback);
-}
-
-Return<void> WifiChip::getCapabilities(getCapabilities_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getCapabilitiesInternal, hidl_status_cb);
-}
-
-Return<void> WifiChip::getAvailableModes(getAvailableModes_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getAvailableModesInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiChip::configureChip(ChipModeId mode_id,
-                                     configureChip_cb hidl_status_cb) {
-    return validateAndCallWithLock(
-        this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-        &WifiChip::configureChipInternal, hidl_status_cb, mode_id);
-}
-
-Return<void> WifiChip::getMode(getMode_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getModeInternal, hidl_status_cb);
-}
-
-Return<void> WifiChip::requestChipDebugInfo(
-    requestChipDebugInfo_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::requestChipDebugInfoInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiChip::requestDriverDebugDump(
-    requestDriverDebugDump_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::requestDriverDebugDumpInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiChip::requestFirmwareDebugDump(
-    requestFirmwareDebugDump_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::requestFirmwareDebugDumpInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiChip::createApIface(createApIface_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::createApIfaceInternal, hidl_status_cb);
-}
-
-Return<void> WifiChip::getApIfaceNames(getApIfaceNames_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getApIfaceNamesInternal, hidl_status_cb);
-}
-
-Return<void> WifiChip::getApIface(const hidl_string& ifname,
-                                  getApIface_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getApIfaceInternal, hidl_status_cb,
-                           ifname);
-}
-
-Return<void> WifiChip::removeApIface(const hidl_string& ifname,
-                                     removeApIface_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::removeApIfaceInternal, hidl_status_cb,
-                           ifname);
-}
-
-Return<void> WifiChip::createNanIface(createNanIface_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::createNanIfaceInternal, hidl_status_cb);
-}
-
-Return<void> WifiChip::getNanIfaceNames(getNanIfaceNames_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getNanIfaceNamesInternal, hidl_status_cb);
-}
-
-Return<void> WifiChip::getNanIface(const hidl_string& ifname,
-                                   getNanIface_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getNanIfaceInternal, hidl_status_cb,
-                           ifname);
-}
-
-Return<void> WifiChip::removeNanIface(const hidl_string& ifname,
-                                      removeNanIface_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::removeNanIfaceInternal, hidl_status_cb,
-                           ifname);
-}
-
-Return<void> WifiChip::createP2pIface(createP2pIface_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::createP2pIfaceInternal, hidl_status_cb);
-}
-
-Return<void> WifiChip::getP2pIfaceNames(getP2pIfaceNames_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getP2pIfaceNamesInternal, hidl_status_cb);
-}
-
-Return<void> WifiChip::getP2pIface(const hidl_string& ifname,
-                                   getP2pIface_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getP2pIfaceInternal, hidl_status_cb,
-                           ifname);
-}
-
-Return<void> WifiChip::removeP2pIface(const hidl_string& ifname,
-                                      removeP2pIface_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::removeP2pIfaceInternal, hidl_status_cb,
-                           ifname);
-}
-
-Return<void> WifiChip::createStaIface(createStaIface_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::createStaIfaceInternal, hidl_status_cb);
-}
-
-Return<void> WifiChip::getStaIfaceNames(getStaIfaceNames_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getStaIfaceNamesInternal, hidl_status_cb);
-}
-
-Return<void> WifiChip::getStaIface(const hidl_string& ifname,
-                                   getStaIface_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getStaIfaceInternal, hidl_status_cb,
-                           ifname);
-}
-
-Return<void> WifiChip::removeStaIface(const hidl_string& ifname,
-                                      removeStaIface_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::removeStaIfaceInternal, hidl_status_cb,
-                           ifname);
-}
-
-Return<void> WifiChip::createRttController(
-    const sp<IWifiIface>& bound_iface, createRttController_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::createRttControllerInternal,
-                           hidl_status_cb, bound_iface);
-}
-
-Return<void> WifiChip::getDebugRingBuffersStatus(
-    getDebugRingBuffersStatus_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getDebugRingBuffersStatusInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiChip::startLoggingToDebugRingBuffer(
-    const hidl_string& ring_name, WifiDebugRingBufferVerboseLevel verbose_level,
-    uint32_t max_interval_in_sec, uint32_t min_data_size_in_bytes,
-    startLoggingToDebugRingBuffer_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::startLoggingToDebugRingBufferInternal,
-                           hidl_status_cb, ring_name, verbose_level,
-                           max_interval_in_sec, min_data_size_in_bytes);
-}
-
-Return<void> WifiChip::forceDumpToDebugRingBuffer(
-    const hidl_string& ring_name,
-    forceDumpToDebugRingBuffer_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::forceDumpToDebugRingBufferInternal,
-                           hidl_status_cb, ring_name);
-}
-
-Return<void> WifiChip::flushRingBufferToFile(
-    flushRingBufferToFile_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::flushRingBufferToFileInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiChip::stopLoggingToDebugRingBuffer(
-    stopLoggingToDebugRingBuffer_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::stopLoggingToDebugRingBufferInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiChip::getDebugHostWakeReasonStats(
-    getDebugHostWakeReasonStats_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getDebugHostWakeReasonStatsInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiChip::enableDebugErrorAlerts(
-    bool enable, enableDebugErrorAlerts_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::enableDebugErrorAlertsInternal,
-                           hidl_status_cb, enable);
-}
-
-Return<void> WifiChip::selectTxPowerScenario(
-    V1_1::IWifiChip::TxPowerScenario scenario,
-    selectTxPowerScenario_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::selectTxPowerScenarioInternal,
-                           hidl_status_cb, scenario);
-}
-
-Return<void> WifiChip::resetTxPowerScenario(
-    resetTxPowerScenario_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::resetTxPowerScenarioInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiChip::setLatencyMode(LatencyMode mode,
-                                      setLatencyMode_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::setLatencyModeInternal, hidl_status_cb,
-                           mode);
-}
-
-Return<void> WifiChip::registerEventCallback_1_2(
-    const sp<V1_2::IWifiChipEventCallback>& event_callback,
-    registerEventCallback_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::registerEventCallbackInternal_1_2,
-                           hidl_status_cb, event_callback);
-}
-
-Return<void> WifiChip::selectTxPowerScenario_1_2(
-    TxPowerScenario scenario, selectTxPowerScenario_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::selectTxPowerScenarioInternal_1_2,
-                           hidl_status_cb, scenario);
-}
-
-Return<void> WifiChip::getCapabilities_1_3(getCapabilities_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
-                           &WifiChip::getCapabilitiesInternal_1_3,
-                           hidl_status_cb);
-}
-
-Return<void> WifiChip::debug(const hidl_handle& handle,
-                             const hidl_vec<hidl_string>&) {
-    if (handle != nullptr && handle->numFds >= 1) {
-        int fd = handle->data[0];
-        if (!writeRingbufferFilesInternal()) {
-            LOG(ERROR) << "Error writing files to flash";
-        }
-        uint32_t n_error = cpioArchiveFilesInDir(fd, kTombstoneFolderPath);
-        if (n_error != 0) {
-            LOG(ERROR) << n_error << " errors occured in cpio function";
-        }
-        fsync(fd);
-    } else {
-        LOG(ERROR) << "File handle error";
-    }
-    return Void();
-}
-
-void WifiChip::invalidateAndRemoveAllIfaces() {
-    invalidateAndClearAll(ap_ifaces_);
-    invalidateAndClearAll(nan_ifaces_);
-    invalidateAndClearAll(p2p_ifaces_);
-    invalidateAndClearAll(sta_ifaces_);
-    // Since all the ifaces are invalid now, all RTT controller objects
-    // using those ifaces also need to be invalidated.
-    for (const auto& rtt : rtt_controllers_) {
-        rtt->invalidate();
-    }
-    rtt_controllers_.clear();
-}
-
-void WifiChip::invalidateAndRemoveDependencies(
-    const std::string& removed_iface_name) {
-    for (const auto& nan_iface : nan_ifaces_) {
-        if (nan_iface->getName() == removed_iface_name) {
-            invalidateAndClear(nan_ifaces_, nan_iface);
-            for (const auto& callback : event_cb_handler_.getCallbacks()) {
-                if (!callback
-                         ->onIfaceRemoved(IfaceType::NAN, removed_iface_name)
-                         .isOk()) {
-                    LOG(ERROR) << "Failed to invoke onIfaceRemoved callback";
-                }
-            }
-        }
-    }
-    for (const auto& rtt : rtt_controllers_) {
-        if (rtt->getIfaceName() == removed_iface_name) {
-            invalidateAndClear(rtt_controllers_, rtt);
-        }
-    }
-}
-
-std::pair<WifiStatus, ChipId> WifiChip::getIdInternal() {
-    return {createWifiStatus(WifiStatusCode::SUCCESS), chip_id_};
-}
-
-WifiStatus WifiChip::registerEventCallbackInternal(
-    const sp<V1_0::IWifiChipEventCallback>& /* event_callback */) {
-    // Deprecated support for this callback.
-    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
-}
-
-std::pair<WifiStatus, uint32_t> WifiChip::getCapabilitiesInternal() {
-    // Deprecated support for this callback.
-    return {createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED), 0};
-}
-
-std::pair<WifiStatus, uint32_t> WifiChip::getCapabilitiesInternal_1_3() {
-    legacy_hal::wifi_error legacy_status;
-    uint32_t legacy_feature_set;
-    uint32_t legacy_logger_feature_set;
-    const auto ifname = getFirstActiveWlanIfaceName();
-    std::tie(legacy_status, legacy_feature_set) =
-        legacy_hal_.lock()->getSupportedFeatureSet(ifname);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        return {createWifiStatusFromLegacyError(legacy_status), 0};
-    }
-    std::tie(legacy_status, legacy_logger_feature_set) =
-        legacy_hal_.lock()->getLoggerSupportedFeatureSet(ifname);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        // some devices don't support querying logger feature set
-        legacy_logger_feature_set = 0;
-    }
-    uint32_t hidl_caps;
-    if (!hidl_struct_util::convertLegacyFeaturesToHidlChipCapabilities(
-            legacy_feature_set, legacy_logger_feature_set, &hidl_caps)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), 0};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
-}
-
-std::pair<WifiStatus, std::vector<IWifiChip::ChipMode>>
-WifiChip::getAvailableModesInternal() {
-    return {createWifiStatus(WifiStatusCode::SUCCESS), modes_};
-}
-
-WifiStatus WifiChip::configureChipInternal(
-    /* NONNULL */ std::unique_lock<std::recursive_mutex>* lock,
-    ChipModeId mode_id) {
-    if (!isValidModeId(mode_id)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    if (mode_id == current_mode_id_) {
-        LOG(DEBUG) << "Already in the specified mode " << mode_id;
-        return createWifiStatus(WifiStatusCode::SUCCESS);
-    }
-    WifiStatus status = handleChipConfiguration(lock, mode_id);
-    if (status.code != WifiStatusCode::SUCCESS) {
-        for (const auto& callback : event_cb_handler_.getCallbacks()) {
-            if (!callback->onChipReconfigureFailure(status).isOk()) {
-                LOG(ERROR)
-                    << "Failed to invoke onChipReconfigureFailure callback";
-            }
-        }
-        return status;
-    }
-    for (const auto& callback : event_cb_handler_.getCallbacks()) {
-        if (!callback->onChipReconfigured(mode_id).isOk()) {
-            LOG(ERROR) << "Failed to invoke onChipReconfigured callback";
-        }
-    }
-    current_mode_id_ = mode_id;
-    LOG(INFO) << "Configured chip in mode " << mode_id;
-    setActiveWlanIfaceNameProperty(getFirstActiveWlanIfaceName());
-    return status;
-}
-
-std::pair<WifiStatus, uint32_t> WifiChip::getModeInternal() {
-    if (!isValidModeId(current_mode_id_)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE),
-                current_mode_id_};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), current_mode_id_};
-}
-
-std::pair<WifiStatus, IWifiChip::ChipDebugInfo>
-WifiChip::requestChipDebugInfoInternal() {
-    IWifiChip::ChipDebugInfo result;
-    legacy_hal::wifi_error legacy_status;
-    std::string driver_desc;
-    const auto ifname = getFirstActiveWlanIfaceName();
-    std::tie(legacy_status, driver_desc) =
-        legacy_hal_.lock()->getDriverVersion(ifname);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        LOG(ERROR) << "Failed to get driver version: "
-                   << legacyErrorToString(legacy_status);
-        WifiStatus status = createWifiStatusFromLegacyError(
-            legacy_status, "failed to get driver version");
-        return {status, result};
-    }
-    result.driverDescription = driver_desc.c_str();
-
-    std::string firmware_desc;
-    std::tie(legacy_status, firmware_desc) =
-        legacy_hal_.lock()->getFirmwareVersion(ifname);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        LOG(ERROR) << "Failed to get firmware version: "
-                   << legacyErrorToString(legacy_status);
-        WifiStatus status = createWifiStatusFromLegacyError(
-            legacy_status, "failed to get firmware version");
-        return {status, result};
-    }
-    result.firmwareDescription = firmware_desc.c_str();
-
-    return {createWifiStatus(WifiStatusCode::SUCCESS), result};
-}
-
-std::pair<WifiStatus, std::vector<uint8_t>>
-WifiChip::requestDriverDebugDumpInternal() {
-    legacy_hal::wifi_error legacy_status;
-    std::vector<uint8_t> driver_dump;
-    std::tie(legacy_status, driver_dump) =
-        legacy_hal_.lock()->requestDriverMemoryDump(
-            getFirstActiveWlanIfaceName());
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        LOG(ERROR) << "Failed to get driver debug dump: "
-                   << legacyErrorToString(legacy_status);
-        return {createWifiStatusFromLegacyError(legacy_status),
-                std::vector<uint8_t>()};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), driver_dump};
-}
-
-std::pair<WifiStatus, std::vector<uint8_t>>
-WifiChip::requestFirmwareDebugDumpInternal() {
-    legacy_hal::wifi_error legacy_status;
-    std::vector<uint8_t> firmware_dump;
-    std::tie(legacy_status, firmware_dump) =
-        legacy_hal_.lock()->requestFirmwareMemoryDump(
-            getFirstActiveWlanIfaceName());
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        LOG(ERROR) << "Failed to get firmware debug dump: "
-                   << legacyErrorToString(legacy_status);
-        return {createWifiStatusFromLegacyError(legacy_status), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), firmware_dump};
-}
-
-std::pair<WifiStatus, sp<IWifiApIface>> WifiChip::createApIfaceInternal() {
-    if (!canCurrentModeSupportIfaceOfTypeWithCurrentIfaces(IfaceType::AP)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
-    }
-    std::string ifname = allocateApIfaceName();
-    sp<WifiApIface> iface =
-        new WifiApIface(ifname, legacy_hal_, iface_util_, feature_flags_);
-    ap_ifaces_.push_back(iface);
-    for (const auto& callback : event_cb_handler_.getCallbacks()) {
-        if (!callback->onIfaceAdded(IfaceType::AP, ifname).isOk()) {
-            LOG(ERROR) << "Failed to invoke onIfaceAdded callback";
-        }
-    }
-    setActiveWlanIfaceNameProperty(getFirstActiveWlanIfaceName());
-    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
-}
-
-std::pair<WifiStatus, std::vector<hidl_string>>
-WifiChip::getApIfaceNamesInternal() {
-    if (ap_ifaces_.empty()) {
-        return {createWifiStatus(WifiStatusCode::SUCCESS), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), getNames(ap_ifaces_)};
-}
-
-std::pair<WifiStatus, sp<IWifiApIface>> WifiChip::getApIfaceInternal(
-    const std::string& ifname) {
-    const auto iface = findUsingName(ap_ifaces_, ifname);
-    if (!iface.get()) {
-        return {createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS), nullptr};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
-}
-
-WifiStatus WifiChip::removeApIfaceInternal(const std::string& ifname) {
-    const auto iface = findUsingName(ap_ifaces_, ifname);
-    if (!iface.get()) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    // Invalidate & remove any dependent objects first.
-    // Note: This is probably not required because we never create
-    // nan/rtt objects over AP iface. But, there is no harm to do it
-    // here and not make that assumption all over the place.
-    invalidateAndRemoveDependencies(ifname);
-    invalidateAndClear(ap_ifaces_, iface);
-    for (const auto& callback : event_cb_handler_.getCallbacks()) {
-        if (!callback->onIfaceRemoved(IfaceType::AP, ifname).isOk()) {
-            LOG(ERROR) << "Failed to invoke onIfaceRemoved callback";
-        }
-    }
-    setActiveWlanIfaceNameProperty(getFirstActiveWlanIfaceName());
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-std::pair<WifiStatus, sp<IWifiNanIface>> WifiChip::createNanIfaceInternal() {
-    if (!canCurrentModeSupportIfaceOfTypeWithCurrentIfaces(IfaceType::NAN)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
-    }
-    // These are still assumed to be based on wlan0.
-    std::string ifname = getFirstActiveWlanIfaceName();
-    sp<WifiNanIface> iface = new WifiNanIface(ifname, legacy_hal_, iface_util_);
-    nan_ifaces_.push_back(iface);
-    for (const auto& callback : event_cb_handler_.getCallbacks()) {
-        if (!callback->onIfaceAdded(IfaceType::NAN, ifname).isOk()) {
-            LOG(ERROR) << "Failed to invoke onIfaceAdded callback";
-        }
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
-}
-
-std::pair<WifiStatus, std::vector<hidl_string>>
-WifiChip::getNanIfaceNamesInternal() {
-    if (nan_ifaces_.empty()) {
-        return {createWifiStatus(WifiStatusCode::SUCCESS), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), getNames(nan_ifaces_)};
-}
-
-std::pair<WifiStatus, sp<IWifiNanIface>> WifiChip::getNanIfaceInternal(
-    const std::string& ifname) {
-    const auto iface = findUsingName(nan_ifaces_, ifname);
-    if (!iface.get()) {
-        return {createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS), nullptr};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
-}
-
-WifiStatus WifiChip::removeNanIfaceInternal(const std::string& ifname) {
-    const auto iface = findUsingName(nan_ifaces_, ifname);
-    if (!iface.get()) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    invalidateAndClear(nan_ifaces_, iface);
-    for (const auto& callback : event_cb_handler_.getCallbacks()) {
-        if (!callback->onIfaceRemoved(IfaceType::NAN, ifname).isOk()) {
-            LOG(ERROR) << "Failed to invoke onIfaceAdded callback";
-        }
-    }
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-std::pair<WifiStatus, sp<IWifiP2pIface>> WifiChip::createP2pIfaceInternal() {
-    if (!canCurrentModeSupportIfaceOfTypeWithCurrentIfaces(IfaceType::P2P)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
-    }
-    std::string ifname = getP2pIfaceName();
-    sp<WifiP2pIface> iface = new WifiP2pIface(ifname, legacy_hal_);
-    p2p_ifaces_.push_back(iface);
-    for (const auto& callback : event_cb_handler_.getCallbacks()) {
-        if (!callback->onIfaceAdded(IfaceType::P2P, ifname).isOk()) {
-            LOG(ERROR) << "Failed to invoke onIfaceAdded callback";
-        }
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
-}
-
-std::pair<WifiStatus, std::vector<hidl_string>>
-WifiChip::getP2pIfaceNamesInternal() {
-    if (p2p_ifaces_.empty()) {
-        return {createWifiStatus(WifiStatusCode::SUCCESS), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), getNames(p2p_ifaces_)};
-}
-
-std::pair<WifiStatus, sp<IWifiP2pIface>> WifiChip::getP2pIfaceInternal(
-    const std::string& ifname) {
-    const auto iface = findUsingName(p2p_ifaces_, ifname);
-    if (!iface.get()) {
-        return {createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS), nullptr};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
-}
-
-WifiStatus WifiChip::removeP2pIfaceInternal(const std::string& ifname) {
-    const auto iface = findUsingName(p2p_ifaces_, ifname);
-    if (!iface.get()) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    invalidateAndClear(p2p_ifaces_, iface);
-    for (const auto& callback : event_cb_handler_.getCallbacks()) {
-        if (!callback->onIfaceRemoved(IfaceType::P2P, ifname).isOk()) {
-            LOG(ERROR) << "Failed to invoke onIfaceRemoved callback";
-        }
-    }
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-std::pair<WifiStatus, sp<IWifiStaIface>> WifiChip::createStaIfaceInternal() {
-    if (!canCurrentModeSupportIfaceOfTypeWithCurrentIfaces(IfaceType::STA)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
-    }
-    std::string ifname = allocateStaIfaceName();
-    sp<WifiStaIface> iface = new WifiStaIface(ifname, legacy_hal_, iface_util_);
-    sta_ifaces_.push_back(iface);
-    for (const auto& callback : event_cb_handler_.getCallbacks()) {
-        if (!callback->onIfaceAdded(IfaceType::STA, ifname).isOk()) {
-            LOG(ERROR) << "Failed to invoke onIfaceAdded callback";
-        }
-    }
-    setActiveWlanIfaceNameProperty(getFirstActiveWlanIfaceName());
-    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
-}
-
-std::pair<WifiStatus, std::vector<hidl_string>>
-WifiChip::getStaIfaceNamesInternal() {
-    if (sta_ifaces_.empty()) {
-        return {createWifiStatus(WifiStatusCode::SUCCESS), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), getNames(sta_ifaces_)};
-}
-
-std::pair<WifiStatus, sp<IWifiStaIface>> WifiChip::getStaIfaceInternal(
-    const std::string& ifname) {
-    const auto iface = findUsingName(sta_ifaces_, ifname);
-    if (!iface.get()) {
-        return {createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS), nullptr};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
-}
-
-WifiStatus WifiChip::removeStaIfaceInternal(const std::string& ifname) {
-    const auto iface = findUsingName(sta_ifaces_, ifname);
-    if (!iface.get()) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    // Invalidate & remove any dependent objects first.
-    invalidateAndRemoveDependencies(ifname);
-    invalidateAndClear(sta_ifaces_, iface);
-    for (const auto& callback : event_cb_handler_.getCallbacks()) {
-        if (!callback->onIfaceRemoved(IfaceType::STA, ifname).isOk()) {
-            LOG(ERROR) << "Failed to invoke onIfaceRemoved callback";
-        }
-    }
-    setActiveWlanIfaceNameProperty(getFirstActiveWlanIfaceName());
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-std::pair<WifiStatus, sp<IWifiRttController>>
-WifiChip::createRttControllerInternal(const sp<IWifiIface>& bound_iface) {
-    if (sta_ifaces_.size() == 0 &&
-        !canCurrentModeSupportIfaceOfType(IfaceType::STA)) {
-        LOG(ERROR) << "createRttControllerInternal: Chip cannot support STAs "
-                      "(and RTT by extension)";
-        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
-    }
-    sp<WifiRttController> rtt = new WifiRttController(
-        getFirstActiveWlanIfaceName(), bound_iface, legacy_hal_);
-    rtt_controllers_.emplace_back(rtt);
-    return {createWifiStatus(WifiStatusCode::SUCCESS), rtt};
-}
-
-std::pair<WifiStatus, std::vector<WifiDebugRingBufferStatus>>
-WifiChip::getDebugRingBuffersStatusInternal() {
-    legacy_hal::wifi_error legacy_status;
-    std::vector<legacy_hal::wifi_ring_buffer_status>
-        legacy_ring_buffer_status_vec;
-    std::tie(legacy_status, legacy_ring_buffer_status_vec) =
-        legacy_hal_.lock()->getRingBuffersStatus(getFirstActiveWlanIfaceName());
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        return {createWifiStatusFromLegacyError(legacy_status), {}};
-    }
-    std::vector<WifiDebugRingBufferStatus> hidl_ring_buffer_status_vec;
-    if (!hidl_struct_util::convertLegacyVectorOfDebugRingBufferStatusToHidl(
-            legacy_ring_buffer_status_vec, &hidl_ring_buffer_status_vec)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS),
-            hidl_ring_buffer_status_vec};
-}
-
-WifiStatus WifiChip::startLoggingToDebugRingBufferInternal(
-    const hidl_string& ring_name, WifiDebugRingBufferVerboseLevel verbose_level,
-    uint32_t max_interval_in_sec, uint32_t min_data_size_in_bytes) {
-    WifiStatus status = registerDebugRingBufferCallback();
-    if (status.code != WifiStatusCode::SUCCESS) {
-        return status;
-    }
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->startRingBufferLogging(
-            getFirstActiveWlanIfaceName(), ring_name,
-            static_cast<
-                std::underlying_type<WifiDebugRingBufferVerboseLevel>::type>(
-                verbose_level),
-            max_interval_in_sec, min_data_size_in_bytes);
-    ringbuffer_map_.insert(std::pair<std::string, Ringbuffer>(
-        ring_name, Ringbuffer(kMaxBufferSizeBytes)));
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiChip::forceDumpToDebugRingBufferInternal(
-    const hidl_string& ring_name) {
-    WifiStatus status = registerDebugRingBufferCallback();
-    if (status.code != WifiStatusCode::SUCCESS) {
-        return status;
-    }
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->getRingBufferData(getFirstActiveWlanIfaceName(),
-                                              ring_name);
-
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiChip::flushRingBufferToFileInternal() {
-    if (!writeRingbufferFilesInternal()) {
-        LOG(ERROR) << "Error writing files to flash";
-        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-    }
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-WifiStatus WifiChip::stopLoggingToDebugRingBufferInternal() {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->deregisterRingBufferCallbackHandler(
-            getFirstActiveWlanIfaceName());
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-std::pair<WifiStatus, WifiDebugHostWakeReasonStats>
-WifiChip::getDebugHostWakeReasonStatsInternal() {
-    legacy_hal::wifi_error legacy_status;
-    legacy_hal::WakeReasonStats legacy_stats;
-    std::tie(legacy_status, legacy_stats) =
-        legacy_hal_.lock()->getWakeReasonStats(getFirstActiveWlanIfaceName());
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        return {createWifiStatusFromLegacyError(legacy_status), {}};
-    }
-    WifiDebugHostWakeReasonStats hidl_stats;
-    if (!hidl_struct_util::convertLegacyWakeReasonStatsToHidl(legacy_stats,
-                                                              &hidl_stats)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_stats};
-}
-
-WifiStatus WifiChip::enableDebugErrorAlertsInternal(bool enable) {
-    legacy_hal::wifi_error legacy_status;
-    if (enable) {
-        android::wp<WifiChip> weak_ptr_this(this);
-        const auto& on_alert_callback = [weak_ptr_this](
-                                            int32_t error_code,
-                                            std::vector<uint8_t> debug_data) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                if (!callback->onDebugErrorAlert(error_code, debug_data)
-                         .isOk()) {
-                    LOG(ERROR) << "Failed to invoke onDebugErrorAlert callback";
-                }
-            }
-        };
-        legacy_status = legacy_hal_.lock()->registerErrorAlertCallbackHandler(
-            getFirstActiveWlanIfaceName(), on_alert_callback);
-    } else {
-        legacy_status = legacy_hal_.lock()->deregisterErrorAlertCallbackHandler(
-            getFirstActiveWlanIfaceName());
-    }
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiChip::selectTxPowerScenarioInternal(
-    V1_1::IWifiChip::TxPowerScenario scenario) {
-    auto legacy_status = legacy_hal_.lock()->selectTxPowerScenario(
-        getFirstActiveWlanIfaceName(),
-        hidl_struct_util::convertHidlTxPowerScenarioToLegacy(scenario));
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiChip::resetTxPowerScenarioInternal() {
-    auto legacy_status =
-        legacy_hal_.lock()->resetTxPowerScenario(getFirstActiveWlanIfaceName());
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiChip::setLatencyModeInternal(LatencyMode mode) {
-    auto legacy_status = legacy_hal_.lock()->setLatencyMode(
-        getFirstActiveWlanIfaceName(),
-        hidl_struct_util::convertHidlLatencyModeToLegacy(mode));
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiChip::registerEventCallbackInternal_1_2(
-    const sp<V1_2::IWifiChipEventCallback>& event_callback) {
-    if (!event_cb_handler_.addCallback(event_callback)) {
-        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-    }
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-WifiStatus WifiChip::selectTxPowerScenarioInternal_1_2(
-    TxPowerScenario scenario) {
-    auto legacy_status = legacy_hal_.lock()->selectTxPowerScenario(
-        getFirstActiveWlanIfaceName(),
-        hidl_struct_util::convertHidlTxPowerScenarioToLegacy_1_2(scenario));
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiChip::handleChipConfiguration(
-    /* NONNULL */ std::unique_lock<std::recursive_mutex>* lock,
-    ChipModeId mode_id) {
-    // If the chip is already configured in a different mode, stop
-    // the legacy HAL and then start it after firmware mode change.
-    if (isValidModeId(current_mode_id_)) {
-        LOG(INFO) << "Reconfiguring chip from mode " << current_mode_id_
-                  << " to mode " << mode_id;
-        invalidateAndRemoveAllIfaces();
-        legacy_hal::wifi_error legacy_status =
-            legacy_hal_.lock()->stop(lock, []() {});
-        if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-            LOG(ERROR) << "Failed to stop legacy HAL: "
-                       << legacyErrorToString(legacy_status);
-            return createWifiStatusFromLegacyError(legacy_status);
-        }
-    }
-    // Firmware mode change not needed for V2 devices.
-    bool success = true;
-    if (mode_id == feature_flags::chip_mode_ids::kV1Sta) {
-        success = mode_controller_.lock()->changeFirmwareMode(IfaceType::STA);
-    } else if (mode_id == feature_flags::chip_mode_ids::kV1Ap) {
-        success = mode_controller_.lock()->changeFirmwareMode(IfaceType::AP);
-    }
-    if (!success) {
-        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-    }
-    legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->start();
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        LOG(ERROR) << "Failed to start legacy HAL: "
-                   << legacyErrorToString(legacy_status);
-        return createWifiStatusFromLegacyError(legacy_status);
-    }
-    // Every time the HAL is restarted, we need to register the
-    // radio mode change callback.
-    WifiStatus status = registerRadioModeChangeCallback();
-    if (status.code != WifiStatusCode::SUCCESS) {
-        // This probably is not a critical failure?
-        LOG(ERROR) << "Failed to register radio mode change callback";
-    }
-    // Extract and save the version information into property.
-    std::pair<WifiStatus, IWifiChip::ChipDebugInfo> version_info;
-    version_info = WifiChip::requestChipDebugInfoInternal();
-    if (WifiStatusCode::SUCCESS == version_info.first.code) {
-        property_set("vendor.wlan.firmware.version",
-                     version_info.second.firmwareDescription.c_str());
-        property_set("vendor.wlan.driver.version",
-                     version_info.second.driverDescription.c_str());
-    }
-
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-WifiStatus WifiChip::registerDebugRingBufferCallback() {
-    if (debug_ring_buffer_cb_registered_) {
-        return createWifiStatus(WifiStatusCode::SUCCESS);
-    }
-
-    android::wp<WifiChip> weak_ptr_this(this);
-    const auto& on_ring_buffer_data_callback =
-        [weak_ptr_this](const std::string& name,
-                        const std::vector<uint8_t>& data,
-                        const legacy_hal::wifi_ring_buffer_status& status) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            WifiDebugRingBufferStatus hidl_status;
-            if (!hidl_struct_util::convertLegacyDebugRingBufferStatusToHidl(
-                    status, &hidl_status)) {
-                LOG(ERROR) << "Error converting ring buffer status";
-                return;
-            }
-            const auto& target = shared_ptr_this->ringbuffer_map_.find(name);
-            if (target != shared_ptr_this->ringbuffer_map_.end()) {
-                Ringbuffer& cur_buffer = target->second;
-                cur_buffer.append(data);
-            } else {
-                LOG(ERROR) << "Ringname " << name << " not found";
-                return;
-            }
-        };
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->registerRingBufferCallbackHandler(
-            getFirstActiveWlanIfaceName(), on_ring_buffer_data_callback);
-
-    if (legacy_status == legacy_hal::WIFI_SUCCESS) {
-        debug_ring_buffer_cb_registered_ = true;
-    }
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiChip::registerRadioModeChangeCallback() {
-    android::wp<WifiChip> weak_ptr_this(this);
-    const auto& on_radio_mode_change_callback =
-        [weak_ptr_this](const std::vector<legacy_hal::WifiMacInfo>& mac_infos) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            std::vector<V1_2::IWifiChipEventCallback::RadioModeInfo>
-                hidl_radio_mode_infos;
-            if (!hidl_struct_util::convertLegacyWifiMacInfosToHidl(
-                    mac_infos, &hidl_radio_mode_infos)) {
-                LOG(ERROR) << "Error converting wifi mac info";
-                return;
-            }
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                if (!callback->onRadioModeChange(hidl_radio_mode_infos)
-                         .isOk()) {
-                    LOG(ERROR) << "Failed to invoke onRadioModeChange"
-                               << " callback on: " << toString(callback);
-                }
-            }
-        };
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->registerRadioModeChangeCallbackHandler(
-            getFirstActiveWlanIfaceName(), on_radio_mode_change_callback);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-std::vector<IWifiChip::ChipIfaceCombination>
-WifiChip::getCurrentModeIfaceCombinations() {
-    if (!isValidModeId(current_mode_id_)) {
-        LOG(ERROR) << "Chip not configured in a mode yet";
-        return {};
-    }
-    for (const auto& mode : modes_) {
-        if (mode.id == current_mode_id_) {
-            return mode.availableCombinations;
-        }
-    }
-    CHECK(0) << "Expected to find iface combinations for current mode!";
-    return {};
-}
-
-// Returns a map indexed by IfaceType with the number of ifaces currently
-// created of the corresponding type.
-std::map<IfaceType, size_t> WifiChip::getCurrentIfaceCombination() {
-    std::map<IfaceType, size_t> iface_counts;
-    iface_counts[IfaceType::AP] = ap_ifaces_.size();
-    iface_counts[IfaceType::NAN] = nan_ifaces_.size();
-    iface_counts[IfaceType::P2P] = p2p_ifaces_.size();
-    iface_counts[IfaceType::STA] = sta_ifaces_.size();
-    return iface_counts;
-}
-
-// This expands the provided iface combinations to a more parseable
-// form. Returns a vector of available combinations possible with the number
-// of ifaces of each type in the combination.
-// This method is a port of HalDeviceManager.expandIfaceCombos() from framework.
-std::vector<std::map<IfaceType, size_t>> WifiChip::expandIfaceCombinations(
-    const IWifiChip::ChipIfaceCombination& combination) {
-    uint32_t num_expanded_combos = 1;
-    for (const auto& limit : combination.limits) {
-        for (uint32_t i = 0; i < limit.maxIfaces; i++) {
-            num_expanded_combos *= limit.types.size();
-        }
-    }
-
-    // Allocate the vector of expanded combos and reset all iface counts to 0
-    // in each combo.
-    std::vector<std::map<IfaceType, size_t>> expanded_combos;
-    expanded_combos.resize(num_expanded_combos);
-    for (auto& expanded_combo : expanded_combos) {
-        for (const auto type :
-             {IfaceType::AP, IfaceType::NAN, IfaceType::P2P, IfaceType::STA}) {
-            expanded_combo[type] = 0;
-        }
-    }
-    uint32_t span = num_expanded_combos;
-    for (const auto& limit : combination.limits) {
-        for (uint32_t i = 0; i < limit.maxIfaces; i++) {
-            span /= limit.types.size();
-            for (uint32_t k = 0; k < num_expanded_combos; ++k) {
-                const auto iface_type =
-                    limit.types[(k / span) % limit.types.size()];
-                expanded_combos[k][iface_type]++;
-            }
-        }
-    }
-    return expanded_combos;
-}
-
-bool WifiChip::canExpandedIfaceComboSupportIfaceOfTypeWithCurrentIfaces(
-    const std::map<IfaceType, size_t>& expanded_combo,
-    IfaceType requested_type) {
-    const auto current_combo = getCurrentIfaceCombination();
-
-    // Check if we have space for 1 more iface of |type| in this combo
-    for (const auto type :
-         {IfaceType::AP, IfaceType::NAN, IfaceType::P2P, IfaceType::STA}) {
-        size_t num_ifaces_needed = current_combo.at(type);
-        if (type == requested_type) {
-            num_ifaces_needed++;
-        }
-        size_t num_ifaces_allowed = expanded_combo.at(type);
-        if (num_ifaces_needed > num_ifaces_allowed) {
-            return false;
-        }
-    }
-    return true;
-}
-
-// This method does the following:
-// a) Enumerate all possible iface combos by expanding the current
-//    ChipIfaceCombination.
-// b) Check if the requested iface type can be added to the current mode
-//    with the iface combination that is already active.
-bool WifiChip::canCurrentModeSupportIfaceOfTypeWithCurrentIfaces(
-    IfaceType requested_type) {
-    if (!isValidModeId(current_mode_id_)) {
-        LOG(ERROR) << "Chip not configured in a mode yet";
-        return false;
-    }
-    const auto combinations = getCurrentModeIfaceCombinations();
-    for (const auto& combination : combinations) {
-        const auto expanded_combos = expandIfaceCombinations(combination);
-        for (const auto& expanded_combo : expanded_combos) {
-            if (canExpandedIfaceComboSupportIfaceOfTypeWithCurrentIfaces(
-                    expanded_combo, requested_type)) {
-                return true;
-            }
-        }
-    }
-    return false;
-}
-
-// Note: This does not consider ifaces already active. It only checks if the
-// provided expanded iface combination can support the requested combo.
-bool WifiChip::canExpandedIfaceComboSupportIfaceCombo(
-    const std::map<IfaceType, size_t>& expanded_combo,
-    const std::map<IfaceType, size_t>& req_combo) {
-    // Check if we have space for 1 more iface of |type| in this combo
-    for (const auto type :
-         {IfaceType::AP, IfaceType::NAN, IfaceType::P2P, IfaceType::STA}) {
-        if (req_combo.count(type) == 0) {
-            // Iface of "type" not in the req_combo.
-            continue;
-        }
-        size_t num_ifaces_needed = req_combo.at(type);
-        size_t num_ifaces_allowed = expanded_combo.at(type);
-        if (num_ifaces_needed > num_ifaces_allowed) {
-            return false;
-        }
-    }
-    return true;
-}
-// This method does the following:
-// a) Enumerate all possible iface combos by expanding the current
-//    ChipIfaceCombination.
-// b) Check if the requested iface combo can be added to the current mode.
-// Note: This does not consider ifaces already active. It only checks if the
-// current mode can support the requested combo.
-bool WifiChip::canCurrentModeSupportIfaceCombo(
-    const std::map<IfaceType, size_t>& req_combo) {
-    if (!isValidModeId(current_mode_id_)) {
-        LOG(ERROR) << "Chip not configured in a mode yet";
-        return false;
-    }
-    const auto combinations = getCurrentModeIfaceCombinations();
-    for (const auto& combination : combinations) {
-        const auto expanded_combos = expandIfaceCombinations(combination);
-        for (const auto& expanded_combo : expanded_combos) {
-            if (canExpandedIfaceComboSupportIfaceCombo(expanded_combo,
-                                                       req_combo)) {
-                return true;
-            }
-        }
-    }
-    return false;
-}
-
-// This method does the following:
-// a) Enumerate all possible iface combos by expanding the current
-//    ChipIfaceCombination.
-// b) Check if the requested iface type can be added to the current mode.
-bool WifiChip::canCurrentModeSupportIfaceOfType(IfaceType requested_type) {
-    // Check if we can support atleast 1 iface of type.
-    std::map<IfaceType, size_t> req_iface_combo;
-    req_iface_combo[requested_type] = 1;
-    return canCurrentModeSupportIfaceCombo(req_iface_combo);
-}
-
-bool WifiChip::isValidModeId(ChipModeId mode_id) {
-    for (const auto& mode : modes_) {
-        if (mode.id == mode_id) {
-            return true;
-        }
-    }
-    return false;
-}
-
-bool WifiChip::isStaApConcurrencyAllowedInCurrentMode() {
-    // Check if we can support atleast 1 STA & 1 AP concurrently.
-    std::map<IfaceType, size_t> req_iface_combo;
-    req_iface_combo[IfaceType::AP] = 1;
-    req_iface_combo[IfaceType::STA] = 1;
-    return canCurrentModeSupportIfaceCombo(req_iface_combo);
-}
-
-bool WifiChip::isDualApAllowedInCurrentMode() {
-    // Check if we can support atleast 1 STA & 1 AP concurrently.
-    std::map<IfaceType, size_t> req_iface_combo;
-    req_iface_combo[IfaceType::AP] = 2;
-    return canCurrentModeSupportIfaceCombo(req_iface_combo);
-}
-
-std::string WifiChip::getFirstActiveWlanIfaceName() {
-    if (sta_ifaces_.size() > 0) return sta_ifaces_[0]->getName();
-    if (ap_ifaces_.size() > 0) return ap_ifaces_[0]->getName();
-    // This could happen if the chip call is made before any STA/AP
-    // iface is created. Default to wlan0 for such cases.
-    LOG(WARNING) << "No active wlan interfaces in use! Using default";
-    return getWlanIfaceName(0);
-}
-
-// Return the first wlan (wlan0, wlan1 etc.) starting from |start_idx|
-// not already in use.
-// Note: This doesn't check the actual presence of these interfaces.
-std::string WifiChip::allocateApOrStaIfaceName(uint32_t start_idx) {
-    for (unsigned idx = start_idx; idx < kMaxWlanIfaces; idx++) {
-        const auto ifname = getWlanIfaceName(idx);
-        if (findUsingName(ap_ifaces_, ifname)) continue;
-        if (findUsingName(sta_ifaces_, ifname)) continue;
-        return ifname;
-    }
-    // This should never happen. We screwed up somewhere if it did.
-    CHECK(false) << "All wlan interfaces in use already!";
-    return {};
-}
-
-// AP iface names start with idx 1 for modes supporting
-// concurrent STA and not dual AP, else start with idx 0.
-std::string WifiChip::allocateApIfaceName() {
-    return allocateApOrStaIfaceName((isStaApConcurrencyAllowedInCurrentMode() &&
-                                     !isDualApAllowedInCurrentMode())
-                                        ? 1
-                                        : 0);
-}
-
-// STA iface names start with idx 0.
-// Primary STA iface will always be 0.
-std::string WifiChip::allocateStaIfaceName() {
-    return allocateApOrStaIfaceName(0);
-}
-
-bool WifiChip::writeRingbufferFilesInternal() {
-    if (!removeOldFilesInternal()) {
-        LOG(ERROR) << "Error occurred while deleting old tombstone files";
-        return false;
-    }
-    // write ringbuffers to file
-    for (const auto& item : ringbuffer_map_) {
-        const Ringbuffer& cur_buffer = item.second;
-        if (cur_buffer.getData().empty()) {
-            continue;
-        }
-        const std::string file_path_raw =
-            kTombstoneFolderPath + item.first + "XXXXXXXXXX";
-        const int dump_fd = mkstemp(makeCharVec(file_path_raw).data());
-        if (dump_fd == -1) {
-            PLOG(ERROR) << "create file failed";
-            return false;
-        }
-        unique_fd file_auto_closer(dump_fd);
-        for (const auto& cur_block : cur_buffer.getData()) {
-            if (write(dump_fd, cur_block.data(),
-                      sizeof(cur_block[0]) * cur_block.size()) == -1) {
-                PLOG(ERROR) << "Error writing to file";
-            }
-        }
-    }
-    return true;
-}
-
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.3/default/wifi_chip.h b/wifi/1.3/default/wifi_chip.h
deleted file mode 100644
index 153ca6a..0000000
--- a/wifi/1.3/default/wifi_chip.h
+++ /dev/null
@@ -1,281 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef WIFI_CHIP_H_
-#define WIFI_CHIP_H_
-
-#include <list>
-#include <map>
-
-#include <android-base/macros.h>
-#include <android/hardware/wifi/1.3/IWifiChip.h>
-
-#include "hidl_callback_util.h"
-#include "ringbuffer.h"
-#include "wifi_ap_iface.h"
-#include "wifi_feature_flags.h"
-#include "wifi_legacy_hal.h"
-#include "wifi_mode_controller.h"
-#include "wifi_nan_iface.h"
-#include "wifi_p2p_iface.h"
-#include "wifi_rtt_controller.h"
-#include "wifi_sta_iface.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-using namespace android::hardware::wifi::V1_0;
-
-/**
- * HIDL interface object used to control a Wifi HAL chip instance.
- * Since there is only a single chip instance used today, there is no
- * identifying handle information stored here.
- */
-class WifiChip : public V1_3::IWifiChip {
-   public:
-    WifiChip(
-        ChipId chip_id,
-        const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
-        const std::weak_ptr<mode_controller::WifiModeController>
-            mode_controller,
-        const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util,
-        const std::weak_ptr<feature_flags::WifiFeatureFlags> feature_flags);
-    // HIDL does not provide a built-in mechanism to let the server invalidate
-    // a HIDL interface object after creation. If any client process holds onto
-    // a reference to the object in their context, any method calls on that
-    // reference will continue to be directed to the server.
-    //
-    // However Wifi HAL needs to control the lifetime of these objects. So, add
-    // a public |invalidate| method to |WifiChip| and it's child objects. This
-    // will be used to mark an object invalid when either:
-    // a) Wifi HAL is stopped, or
-    // b) Wifi Chip is reconfigured.
-    //
-    // All HIDL method implementations should check if the object is still
-    // marked valid before processing them.
-    void invalidate();
-    bool isValid();
-    std::set<sp<V1_2::IWifiChipEventCallback>> getEventCallbacks();
-
-    // HIDL methods exposed.
-    Return<void> getId(getId_cb hidl_status_cb) override;
-    // Deprecated support for this callback
-    Return<void> registerEventCallback(
-        const sp<V1_0::IWifiChipEventCallback>& event_callback,
-        registerEventCallback_cb hidl_status_cb) override;
-    Return<void> getCapabilities(getCapabilities_cb hidl_status_cb) override;
-    Return<void> getAvailableModes(
-        getAvailableModes_cb hidl_status_cb) override;
-    Return<void> configureChip(ChipModeId mode_id,
-                               configureChip_cb hidl_status_cb) override;
-    Return<void> getMode(getMode_cb hidl_status_cb) override;
-    Return<void> requestChipDebugInfo(
-        requestChipDebugInfo_cb hidl_status_cb) override;
-    Return<void> requestDriverDebugDump(
-        requestDriverDebugDump_cb hidl_status_cb) override;
-    Return<void> requestFirmwareDebugDump(
-        requestFirmwareDebugDump_cb hidl_status_cb) override;
-    Return<void> createApIface(createApIface_cb hidl_status_cb) override;
-    Return<void> getApIfaceNames(getApIfaceNames_cb hidl_status_cb) override;
-    Return<void> getApIface(const hidl_string& ifname,
-                            getApIface_cb hidl_status_cb) override;
-    Return<void> removeApIface(const hidl_string& ifname,
-                               removeApIface_cb hidl_status_cb) override;
-    Return<void> createNanIface(createNanIface_cb hidl_status_cb) override;
-    Return<void> getNanIfaceNames(getNanIfaceNames_cb hidl_status_cb) override;
-    Return<void> getNanIface(const hidl_string& ifname,
-                             getNanIface_cb hidl_status_cb) override;
-    Return<void> removeNanIface(const hidl_string& ifname,
-                                removeNanIface_cb hidl_status_cb) override;
-    Return<void> createP2pIface(createP2pIface_cb hidl_status_cb) override;
-    Return<void> getP2pIfaceNames(getP2pIfaceNames_cb hidl_status_cb) override;
-    Return<void> getP2pIface(const hidl_string& ifname,
-                             getP2pIface_cb hidl_status_cb) override;
-    Return<void> removeP2pIface(const hidl_string& ifname,
-                                removeP2pIface_cb hidl_status_cb) override;
-    Return<void> createStaIface(createStaIface_cb hidl_status_cb) override;
-    Return<void> getStaIfaceNames(getStaIfaceNames_cb hidl_status_cb) override;
-    Return<void> getStaIface(const hidl_string& ifname,
-                             getStaIface_cb hidl_status_cb) override;
-    Return<void> removeStaIface(const hidl_string& ifname,
-                                removeStaIface_cb hidl_status_cb) override;
-    Return<void> createRttController(
-        const sp<IWifiIface>& bound_iface,
-        createRttController_cb hidl_status_cb) override;
-    Return<void> getDebugRingBuffersStatus(
-        getDebugRingBuffersStatus_cb hidl_status_cb) override;
-    Return<void> startLoggingToDebugRingBuffer(
-        const hidl_string& ring_name,
-        WifiDebugRingBufferVerboseLevel verbose_level,
-        uint32_t max_interval_in_sec, uint32_t min_data_size_in_bytes,
-        startLoggingToDebugRingBuffer_cb hidl_status_cb) override;
-    Return<void> forceDumpToDebugRingBuffer(
-        const hidl_string& ring_name,
-        forceDumpToDebugRingBuffer_cb hidl_status_cb) override;
-    Return<void> flushRingBufferToFile(
-        flushRingBufferToFile_cb hidl_status_cb) override;
-    Return<void> stopLoggingToDebugRingBuffer(
-        stopLoggingToDebugRingBuffer_cb hidl_status_cb) override;
-    Return<void> getDebugHostWakeReasonStats(
-        getDebugHostWakeReasonStats_cb hidl_status_cb) override;
-    Return<void> enableDebugErrorAlerts(
-        bool enable, enableDebugErrorAlerts_cb hidl_status_cb) override;
-    Return<void> selectTxPowerScenario(
-        V1_1::IWifiChip::TxPowerScenario scenario,
-        selectTxPowerScenario_cb hidl_status_cb) override;
-    Return<void> resetTxPowerScenario(
-        resetTxPowerScenario_cb hidl_status_cb) override;
-    Return<void> setLatencyMode(LatencyMode mode,
-                                setLatencyMode_cb hidl_status_cb) override;
-    Return<void> registerEventCallback_1_2(
-        const sp<V1_2::IWifiChipEventCallback>& event_callback,
-        registerEventCallback_1_2_cb hidl_status_cb) override;
-    Return<void> selectTxPowerScenario_1_2(
-        TxPowerScenario scenario,
-        selectTxPowerScenario_cb hidl_status_cb) override;
-    Return<void> getCapabilities_1_3(
-        getCapabilities_cb hidl_status_cb) override;
-    Return<void> debug(const hidl_handle& handle,
-                       const hidl_vec<hidl_string>& options) override;
-
-   private:
-    void invalidateAndRemoveAllIfaces();
-    // When a STA iface is removed any dependent NAN-ifaces/RTT-controllers are
-    // invalidated & removed.
-    void invalidateAndRemoveDependencies(const std::string& removed_iface_name);
-
-    // Corresponding worker functions for the HIDL methods.
-    std::pair<WifiStatus, ChipId> getIdInternal();
-    // Deprecated support for this callback
-    WifiStatus registerEventCallbackInternal(
-        const sp<V1_0::IWifiChipEventCallback>& event_callback);
-    std::pair<WifiStatus, uint32_t> getCapabilitiesInternal();
-    std::pair<WifiStatus, std::vector<ChipMode>> getAvailableModesInternal();
-    WifiStatus configureChipInternal(
-        std::unique_lock<std::recursive_mutex>* lock, ChipModeId mode_id);
-    std::pair<WifiStatus, uint32_t> getModeInternal();
-    std::pair<WifiStatus, IWifiChip::ChipDebugInfo>
-    requestChipDebugInfoInternal();
-    std::pair<WifiStatus, std::vector<uint8_t>>
-    requestDriverDebugDumpInternal();
-    std::pair<WifiStatus, std::vector<uint8_t>>
-    requestFirmwareDebugDumpInternal();
-    std::pair<WifiStatus, sp<IWifiApIface>> createApIfaceInternal();
-    std::pair<WifiStatus, std::vector<hidl_string>> getApIfaceNamesInternal();
-    std::pair<WifiStatus, sp<IWifiApIface>> getApIfaceInternal(
-        const std::string& ifname);
-    WifiStatus removeApIfaceInternal(const std::string& ifname);
-    std::pair<WifiStatus, sp<IWifiNanIface>> createNanIfaceInternal();
-    std::pair<WifiStatus, std::vector<hidl_string>> getNanIfaceNamesInternal();
-    std::pair<WifiStatus, sp<IWifiNanIface>> getNanIfaceInternal(
-        const std::string& ifname);
-    WifiStatus removeNanIfaceInternal(const std::string& ifname);
-    std::pair<WifiStatus, sp<IWifiP2pIface>> createP2pIfaceInternal();
-    std::pair<WifiStatus, std::vector<hidl_string>> getP2pIfaceNamesInternal();
-    std::pair<WifiStatus, sp<IWifiP2pIface>> getP2pIfaceInternal(
-        const std::string& ifname);
-    WifiStatus removeP2pIfaceInternal(const std::string& ifname);
-    std::pair<WifiStatus, sp<IWifiStaIface>> createStaIfaceInternal();
-    std::pair<WifiStatus, std::vector<hidl_string>> getStaIfaceNamesInternal();
-    std::pair<WifiStatus, sp<IWifiStaIface>> getStaIfaceInternal(
-        const std::string& ifname);
-    WifiStatus removeStaIfaceInternal(const std::string& ifname);
-    std::pair<WifiStatus, sp<IWifiRttController>> createRttControllerInternal(
-        const sp<IWifiIface>& bound_iface);
-    std::pair<WifiStatus, std::vector<WifiDebugRingBufferStatus>>
-    getDebugRingBuffersStatusInternal();
-    WifiStatus startLoggingToDebugRingBufferInternal(
-        const hidl_string& ring_name,
-        WifiDebugRingBufferVerboseLevel verbose_level,
-        uint32_t max_interval_in_sec, uint32_t min_data_size_in_bytes);
-    WifiStatus forceDumpToDebugRingBufferInternal(const hidl_string& ring_name);
-    WifiStatus flushRingBufferToFileInternal();
-    WifiStatus stopLoggingToDebugRingBufferInternal();
-    std::pair<WifiStatus, WifiDebugHostWakeReasonStats>
-    getDebugHostWakeReasonStatsInternal();
-    WifiStatus enableDebugErrorAlertsInternal(bool enable);
-    WifiStatus selectTxPowerScenarioInternal(
-        V1_1::IWifiChip::TxPowerScenario scenario);
-    WifiStatus resetTxPowerScenarioInternal();
-    WifiStatus setLatencyModeInternal(LatencyMode mode);
-    WifiStatus registerEventCallbackInternal_1_2(
-        const sp<V1_2::IWifiChipEventCallback>& event_callback);
-    WifiStatus selectTxPowerScenarioInternal_1_2(TxPowerScenario scenario);
-    std::pair<WifiStatus, uint32_t> getCapabilitiesInternal_1_3();
-    WifiStatus handleChipConfiguration(
-        std::unique_lock<std::recursive_mutex>* lock, ChipModeId mode_id);
-    WifiStatus registerDebugRingBufferCallback();
-    WifiStatus registerRadioModeChangeCallback();
-
-    std::vector<IWifiChip::ChipIfaceCombination>
-    getCurrentModeIfaceCombinations();
-    std::map<IfaceType, size_t> getCurrentIfaceCombination();
-    std::vector<std::map<IfaceType, size_t>> expandIfaceCombinations(
-        const IWifiChip::ChipIfaceCombination& combination);
-    bool canExpandedIfaceComboSupportIfaceOfTypeWithCurrentIfaces(
-        const std::map<IfaceType, size_t>& expanded_combo,
-        IfaceType requested_type);
-    bool canCurrentModeSupportIfaceOfTypeWithCurrentIfaces(
-        IfaceType requested_type);
-    bool canExpandedIfaceComboSupportIfaceCombo(
-        const std::map<IfaceType, size_t>& expanded_combo,
-        const std::map<IfaceType, size_t>& req_combo);
-    bool canCurrentModeSupportIfaceCombo(
-        const std::map<IfaceType, size_t>& req_combo);
-    bool canCurrentModeSupportIfaceOfType(IfaceType requested_type);
-    bool isValidModeId(ChipModeId mode_id);
-    bool isStaApConcurrencyAllowedInCurrentMode();
-    bool isDualApAllowedInCurrentMode();
-    std::string getFirstActiveWlanIfaceName();
-    std::string allocateApOrStaIfaceName(uint32_t start_idx);
-    std::string allocateApIfaceName();
-    std::string allocateStaIfaceName();
-    bool writeRingbufferFilesInternal();
-
-    ChipId chip_id_;
-    std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
-    std::weak_ptr<mode_controller::WifiModeController> mode_controller_;
-    std::weak_ptr<iface_util::WifiIfaceUtil> iface_util_;
-    std::weak_ptr<feature_flags::WifiFeatureFlags> feature_flags_;
-    std::vector<sp<WifiApIface>> ap_ifaces_;
-    std::vector<sp<WifiNanIface>> nan_ifaces_;
-    std::vector<sp<WifiP2pIface>> p2p_ifaces_;
-    std::vector<sp<WifiStaIface>> sta_ifaces_;
-    std::vector<sp<WifiRttController>> rtt_controllers_;
-    std::map<std::string, Ringbuffer> ringbuffer_map_;
-    bool is_valid_;
-    // Members pertaining to chip configuration.
-    uint32_t current_mode_id_;
-    std::vector<IWifiChip::ChipMode> modes_;
-    // The legacy ring buffer callback API has only a global callback
-    // registration mechanism. Use this to check if we have already
-    // registered a callback.
-    bool debug_ring_buffer_cb_registered_;
-    hidl_callback_util::HidlCallbackHandler<V1_2::IWifiChipEventCallback>
-        event_cb_handler_;
-
-    DISALLOW_COPY_AND_ASSIGN(WifiChip);
-};
-
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // WIFI_CHIP_H_
diff --git a/wifi/1.3/default/wifi_feature_flags.cpp b/wifi/1.3/default/wifi_feature_flags.cpp
deleted file mode 100644
index 7212cfa..0000000
--- a/wifi/1.3/default/wifi_feature_flags.cpp
+++ /dev/null
@@ -1,168 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "wifi_feature_flags.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-namespace feature_flags {
-
-using V1_0::ChipModeId;
-using V1_0::IfaceType;
-using V1_0::IWifiChip;
-
-/* The chip may either have a single mode supporting any number of combinations,
- * or a fixed dual-mode (so it involves firmware loading to switch between
- * modes) setting. If there is a need to support more modes, it needs to be
- * implemented manually in WiFi HAL (see changeFirmwareMode in
- * WifiChip::handleChipConfiguration).
- *
- * Supported combinations are defined in device's makefile, for example:
- *    WIFI_HAL_INTERFACE_COMBINATIONS := {{{STA, AP}, 1}, {{P2P, NAN}, 1}},
- *    WIFI_HAL_INTERFACE_COMBINATIONS += {{{STA}, 1}, {{AP}, 2}}
- * What means:
- *    Interface combination 1: 1 STA or AP and 1 P2P or NAN concurrent iface
- *                             operations.
- *    Interface combination 2: 1 STA and 2 AP concurrent iface operations.
- *
- * For backward compatibility, the following makefile flags can be used to
- * generate combinations list:
- *  - WIFI_HIDL_FEATURE_DUAL_INTERFACE
- *  - WIFI_HIDL_FEATURE_DISABLE_AP
- *  - WIFI_HIDL_FEATURE_AWARE
- * However, they are ignored if WIFI_HAL_INTERFACE_COMBINATIONS was provided.
- * With WIFI_HIDL_FEATURE_DUAL_INTERFACE flag set, there is a single mode with
- * two interface combinations:
- *    Interface Combination 1: Will support 1 STA and 1 P2P or NAN (optional)
- *                             concurrent iface operations.
- *    Interface Combination 2: Will support 1 STA and 1 AP concurrent
- *                             iface operations.
- *
- * The only dual-mode configuration supported is for alternating STA and AP
- * mode, that may involve firmware reloading. In such case, there are 2 separate
- * modes of operation with 1 interface combination each:
- *    Mode 1 (STA mode): Will support 1 STA and 1 P2P or NAN (optional)
- *                       concurrent iface operations.
- *    Mode 2 (AP mode): Will support 1 AP iface operation.
- *
- * If Aware is enabled, the iface combination will be modified to support either
- * P2P or NAN in place of just P2P.
- */
-// clang-format off
-#ifdef WIFI_HAL_INTERFACE_COMBINATIONS
-constexpr ChipModeId kMainModeId = chip_mode_ids::kV3;
-#elif defined(WIFI_HIDL_FEATURE_DUAL_INTERFACE)
-// former V2 (fixed dual interface) setup expressed as V3
-constexpr ChipModeId kMainModeId = chip_mode_ids::kV3;
-#  ifdef WIFI_HIDL_FEATURE_DISABLE_AP
-#    ifdef WIFI_HIDL_FEATURE_AWARE
-//     1 STA + 1 of (P2P or NAN)
-#      define WIFI_HAL_INTERFACE_COMBINATIONS {{{STA}, 1}, {{P2P, NAN}, 1}}
-#    else
-//     1 STA + 1 P2P
-#      define WIFI_HAL_INTERFACE_COMBINATIONS {{{STA}, 1}, {{P2P}, 1}}
-#    endif
-#  else
-#    ifdef WIFI_HIDL_FEATURE_AWARE
-//     (1 STA + 1 AP) or (1 STA + 1 of (P2P or NAN))
-#      define WIFI_HAL_INTERFACE_COMBINATIONS {{{STA}, 1}, {{AP}, 1}},\
-                                              {{{STA}, 1}, {{P2P, NAN}, 1}}
-#    else
-//     (1 STA + 1 AP) or (1 STA + 1 P2P)
-#      define WIFI_HAL_INTERFACE_COMBINATIONS {{{STA}, 1}, {{AP}, 1}},\
-                                              {{{STA}, 1}, {{P2P}, 1}}
-#    endif
-#  endif
-#else
-// V1 (fixed single interface, dual-mode chip)
-constexpr ChipModeId kMainModeId = chip_mode_ids::kV1Sta;
-#  ifdef WIFI_HIDL_FEATURE_AWARE
-//   1 STA + 1 of (P2P or NAN)
-#    define WIFI_HAL_INTERFACE_COMBINATIONS {{{STA}, 1}, {{P2P, NAN}, 1}}
-#  else
-//   1 STA + 1 P2P
-#    define WIFI_HAL_INTERFACE_COMBINATIONS {{{STA}, 1}, {{P2P}, 1}}
-#  endif
-
-#  ifndef WIFI_HIDL_FEATURE_DISABLE_AP
-#    define WIFI_HAL_INTERFACE_COMBINATIONS_AP {{{AP}, 1}}
-#  endif
-#endif
-// clang-format on
-
-/**
- * Helper class to convert a collection of combination limits to a combination.
- *
- * The main point here is to simplify the syntax required by
- * WIFI_HAL_INTERFACE_COMBINATIONS.
- */
-struct ChipIfaceCombination
-    : public hidl_vec<IWifiChip::ChipIfaceCombinationLimit> {
-    ChipIfaceCombination(
-        const std::initializer_list<IWifiChip::ChipIfaceCombinationLimit> list)
-        : hidl_vec(list) {}
-
-    operator IWifiChip::ChipIfaceCombination() const { return {*this}; }
-
-    static hidl_vec<IWifiChip::ChipIfaceCombination> make_vec(
-        const std::initializer_list<ChipIfaceCombination> list) {
-        return hidl_vec<IWifiChip::ChipIfaceCombination>(  //
-            std::begin(list), std::end(list));
-    }
-};
-
-#define STA IfaceType::STA
-#define AP IfaceType::AP
-#define P2P IfaceType::P2P
-#define NAN IfaceType::NAN
-static const std::vector<IWifiChip::ChipMode> kChipModes{
-    {kMainModeId,
-     ChipIfaceCombination::make_vec({WIFI_HAL_INTERFACE_COMBINATIONS})},
-#ifdef WIFI_HAL_INTERFACE_COMBINATIONS_AP
-    {chip_mode_ids::kV1Ap,
-     ChipIfaceCombination::make_vec({WIFI_HAL_INTERFACE_COMBINATIONS_AP})},
-#endif
-};
-#undef STA
-#undef AP
-#undef P2P
-#undef NAN
-
-#ifdef WIFI_HIDL_FEATURE_DISABLE_AP_MAC_RANDOMIZATION
-static const bool wifiHidlFeatureDisableApMacRandomization = true;
-#else
-static const bool wifiHidlFeatureDisableApMacRandomization = false;
-#endif  // WIFI_HIDL_FEATURE_DISABLE_AP
-
-WifiFeatureFlags::WifiFeatureFlags() {}
-
-std::vector<IWifiChip::ChipMode> WifiFeatureFlags::getChipModes() {
-    return kChipModes;
-}
-
-bool WifiFeatureFlags::isApMacRandomizationDisabled() {
-    return wifiHidlFeatureDisableApMacRandomization;
-}
-
-}  // namespace feature_flags
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.3/default/wifi_feature_flags.h b/wifi/1.3/default/wifi_feature_flags.h
deleted file mode 100644
index 3ae6920..0000000
--- a/wifi/1.3/default/wifi_feature_flags.h
+++ /dev/null
@@ -1,56 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef WIFI_FEATURE_FLAGS_H_
-#define WIFI_FEATURE_FLAGS_H_
-
-#include <android/hardware/wifi/1.2/IWifiChip.h>
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-namespace feature_flags {
-
-namespace chip_mode_ids {
-// These mode ID's should be unique (even across combo versions). Refer to
-// handleChipConfiguration() for it's usage.
-constexpr V1_0::ChipModeId kInvalid = UINT32_MAX;
-// Mode ID's for V1
-constexpr V1_0::ChipModeId kV1Sta = 0;
-constexpr V1_0::ChipModeId kV1Ap = 1;
-// Mode ID for V3
-constexpr V1_0::ChipModeId kV3 = 3;
-}  // namespace chip_mode_ids
-
-class WifiFeatureFlags {
-   public:
-    WifiFeatureFlags();
-    virtual ~WifiFeatureFlags() = default;
-
-    virtual std::vector<V1_0::IWifiChip::ChipMode> getChipModes();
-    virtual bool isApMacRandomizationDisabled();
-};
-
-}  // namespace feature_flags
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // WIFI_FEATURE_FLAGS_H_
diff --git a/wifi/1.3/default/wifi_iface_util.cpp b/wifi/1.3/default/wifi_iface_util.cpp
deleted file mode 100644
index 34bc02d..0000000
--- a/wifi/1.3/default/wifi_iface_util.cpp
+++ /dev/null
@@ -1,118 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <cstddef>
-#include <iostream>
-#include <limits>
-#include <random>
-
-#include <android-base/logging.h>
-#include <android-base/macros.h>
-#include <private/android_filesystem_config.h>
-
-#undef NAN
-#include "wifi_iface_util.h"
-
-namespace {
-// Constants to set the local bit & clear the multicast bit.
-constexpr uint8_t kMacAddressMulticastMask = 0x01;
-constexpr uint8_t kMacAddressLocallyAssignedMask = 0x02;
-}  // namespace
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-namespace iface_util {
-
-WifiIfaceUtil::WifiIfaceUtil(
-    const std::weak_ptr<wifi_system::InterfaceTool> iface_tool)
-    : iface_tool_(iface_tool),
-      random_mac_address_(nullptr),
-      event_handlers_map_() {}
-
-std::array<uint8_t, 6> WifiIfaceUtil::getFactoryMacAddress(
-    const std::string& iface_name) {
-    return iface_tool_.lock()->GetFactoryMacAddress(iface_name.c_str());
-}
-
-bool WifiIfaceUtil::setMacAddress(const std::string& iface_name,
-                                  const std::array<uint8_t, 6>& mac) {
-    if (!iface_tool_.lock()->SetUpState(iface_name.c_str(), false)) {
-        LOG(ERROR) << "SetUpState(false) failed.";
-        return false;
-    }
-    if (!iface_tool_.lock()->SetMacAddress(iface_name.c_str(), mac)) {
-        LOG(ERROR) << "SetMacAddress failed.";
-        return false;
-    }
-    if (!iface_tool_.lock()->SetUpState(iface_name.c_str(), true)) {
-        LOG(ERROR) << "SetUpState(true) failed.";
-        return false;
-    }
-    IfaceEventHandlers event_handlers = {};
-    const auto it = event_handlers_map_.find(iface_name);
-    if (it != event_handlers_map_.end()) {
-        event_handlers = it->second;
-    }
-    if (event_handlers.on_state_toggle_off_on != nullptr) {
-        event_handlers.on_state_toggle_off_on(iface_name);
-    }
-    LOG(DEBUG) << "Successfully SetMacAddress.";
-    return true;
-}
-
-std::array<uint8_t, 6> WifiIfaceUtil::getOrCreateRandomMacAddress() {
-    if (random_mac_address_) {
-        return *random_mac_address_.get();
-    }
-    random_mac_address_ =
-        std::make_unique<std::array<uint8_t, 6>>(createRandomMacAddress());
-    return *random_mac_address_.get();
-}
-
-void WifiIfaceUtil::registerIfaceEventHandlers(const std::string& iface_name,
-                                               IfaceEventHandlers handlers) {
-    event_handlers_map_[iface_name] = handlers;
-}
-
-void WifiIfaceUtil::unregisterIfaceEventHandlers(
-    const std::string& iface_name) {
-    event_handlers_map_.erase(iface_name);
-}
-
-std::array<uint8_t, 6> WifiIfaceUtil::createRandomMacAddress() {
-    std::array<uint8_t, 6> address = {};
-    std::random_device rd;
-    std::default_random_engine engine(rd());
-    std::uniform_int_distribution<uint8_t> dist(
-        std::numeric_limits<uint8_t>::min(),
-        std::numeric_limits<uint8_t>::max());
-    for (size_t i = 0; i < address.size(); i++) {
-        address[i] = dist(engine);
-    }
-    // Set the local bit and clear the multicast bit.
-    address[0] |= kMacAddressLocallyAssignedMask;
-    address[0] &= ~kMacAddressMulticastMask;
-    return address;
-}
-}  // namespace iface_util
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.3/default/wifi_iface_util.h b/wifi/1.3/default/wifi_iface_util.h
deleted file mode 100644
index 98073e0..0000000
--- a/wifi/1.3/default/wifi_iface_util.h
+++ /dev/null
@@ -1,75 +0,0 @@
-/*
- * Copyright (C) 2019 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef WIFI_IFACE_UTIL_H_
-#define WIFI_IFACE_UTIL_H_
-
-#include <wifi_system/interface_tool.h>
-
-#include <android/hardware/wifi/1.0/IWifi.h>
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-namespace iface_util {
-
-// Iface event handlers.
-struct IfaceEventHandlers {
-    // Callback to be invoked when the iface is set down & up for MAC address
-    // change.
-    std::function<void(const std::string& iface_name)> on_state_toggle_off_on;
-};
-
-/**
- * Util class for common iface operations.
- */
-class WifiIfaceUtil {
-   public:
-    WifiIfaceUtil(const std::weak_ptr<wifi_system::InterfaceTool> iface_tool);
-    virtual ~WifiIfaceUtil() = default;
-
-    virtual std::array<uint8_t, 6> getFactoryMacAddress(
-        const std::string& iface_name);
-    virtual bool setMacAddress(const std::string& iface_name,
-                               const std::array<uint8_t, 6>& mac);
-    // Get or create a random MAC address. The MAC address returned from
-    // this method will remain the same throughout the lifetime of the HAL
-    // daemon. (So, changes on every reboot)
-    virtual std::array<uint8_t, 6> getOrCreateRandomMacAddress();
-
-    // Register for any iface event callbacks for the provided interface.
-    virtual void registerIfaceEventHandlers(const std::string& iface_name,
-                                            IfaceEventHandlers handlers);
-    virtual void unregisterIfaceEventHandlers(const std::string& iface_name);
-
-   private:
-    std::array<uint8_t, 6> createRandomMacAddress();
-
-    std::weak_ptr<wifi_system::InterfaceTool> iface_tool_;
-    std::unique_ptr<std::array<uint8_t, 6>> random_mac_address_;
-    std::map<std::string, IfaceEventHandlers> event_handlers_map_;
-};
-
-}  // namespace iface_util
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // WIFI_IFACE_UTIL_H_
diff --git a/wifi/1.3/default/wifi_legacy_hal.cpp b/wifi/1.3/default/wifi_legacy_hal.cpp
deleted file mode 100644
index 485bd16..0000000
--- a/wifi/1.3/default/wifi_legacy_hal.cpp
+++ /dev/null
@@ -1,1455 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <array>
-#include <chrono>
-
-#include <android-base/logging.h>
-#include <cutils/properties.h>
-
-#include "hidl_sync_util.h"
-#include "wifi_legacy_hal.h"
-#include "wifi_legacy_hal_stubs.h"
-
-namespace {
-// Constants ported over from the legacy HAL calling code
-// (com_android_server_wifi_WifiNative.cpp). This will all be thrown
-// away when this shim layer is replaced by the real vendor
-// implementation.
-static constexpr uint32_t kMaxVersionStringLength = 256;
-static constexpr uint32_t kMaxCachedGscanResults = 64;
-static constexpr uint32_t kMaxGscanFrequenciesForBand = 64;
-static constexpr uint32_t kLinkLayerStatsDataMpduSizeThreshold = 128;
-static constexpr uint32_t kMaxWakeReasonStatsArraySize = 32;
-static constexpr uint32_t kMaxRingBuffers = 10;
-static constexpr uint32_t kMaxStopCompleteWaitMs = 100;
-static constexpr char kDriverPropName[] = "wlan.driver.status";
-
-// Helper function to create a non-const char* for legacy Hal API's.
-std::vector<char> makeCharVec(const std::string& str) {
-    std::vector<char> vec(str.size() + 1);
-    vec.assign(str.begin(), str.end());
-    vec.push_back('\0');
-    return vec;
-}
-}  // namespace
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-namespace legacy_hal {
-// Legacy HAL functions accept "C" style function pointers, so use global
-// functions to pass to the legacy HAL function and store the corresponding
-// std::function methods to be invoked.
-//
-// Callback to be invoked once |stop| is complete
-std::function<void(wifi_handle handle)> on_stop_complete_internal_callback;
-void onAsyncStopComplete(wifi_handle handle) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_stop_complete_internal_callback) {
-        on_stop_complete_internal_callback(handle);
-        // Invalidate this callback since we don't want this firing again.
-        on_stop_complete_internal_callback = nullptr;
-    }
-}
-
-// Callback to be invoked for driver dump.
-std::function<void(char*, int)> on_driver_memory_dump_internal_callback;
-void onSyncDriverMemoryDump(char* buffer, int buffer_size) {
-    if (on_driver_memory_dump_internal_callback) {
-        on_driver_memory_dump_internal_callback(buffer, buffer_size);
-    }
-}
-
-// Callback to be invoked for firmware dump.
-std::function<void(char*, int)> on_firmware_memory_dump_internal_callback;
-void onSyncFirmwareMemoryDump(char* buffer, int buffer_size) {
-    if (on_firmware_memory_dump_internal_callback) {
-        on_firmware_memory_dump_internal_callback(buffer, buffer_size);
-    }
-}
-
-// Callback to be invoked for Gscan events.
-std::function<void(wifi_request_id, wifi_scan_event)>
-    on_gscan_event_internal_callback;
-void onAsyncGscanEvent(wifi_request_id id, wifi_scan_event event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_gscan_event_internal_callback) {
-        on_gscan_event_internal_callback(id, event);
-    }
-}
-
-// Callback to be invoked for Gscan full results.
-std::function<void(wifi_request_id, wifi_scan_result*, uint32_t)>
-    on_gscan_full_result_internal_callback;
-void onAsyncGscanFullResult(wifi_request_id id, wifi_scan_result* result,
-                            uint32_t buckets_scanned) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_gscan_full_result_internal_callback) {
-        on_gscan_full_result_internal_callback(id, result, buckets_scanned);
-    }
-}
-
-// Callback to be invoked for link layer stats results.
-std::function<void((wifi_request_id, wifi_iface_stat*, int, wifi_radio_stat*))>
-    on_link_layer_stats_result_internal_callback;
-void onSyncLinkLayerStatsResult(wifi_request_id id, wifi_iface_stat* iface_stat,
-                                int num_radios, wifi_radio_stat* radio_stat) {
-    if (on_link_layer_stats_result_internal_callback) {
-        on_link_layer_stats_result_internal_callback(id, iface_stat, num_radios,
-                                                     radio_stat);
-    }
-}
-
-// Callback to be invoked for rssi threshold breach.
-std::function<void((wifi_request_id, uint8_t*, int8_t))>
-    on_rssi_threshold_breached_internal_callback;
-void onAsyncRssiThresholdBreached(wifi_request_id id, uint8_t* bssid,
-                                  int8_t rssi) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_rssi_threshold_breached_internal_callback) {
-        on_rssi_threshold_breached_internal_callback(id, bssid, rssi);
-    }
-}
-
-// Callback to be invoked for ring buffer data indication.
-std::function<void(char*, char*, int, wifi_ring_buffer_status*)>
-    on_ring_buffer_data_internal_callback;
-void onAsyncRingBufferData(char* ring_name, char* buffer, int buffer_size,
-                           wifi_ring_buffer_status* status) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_ring_buffer_data_internal_callback) {
-        on_ring_buffer_data_internal_callback(ring_name, buffer, buffer_size,
-                                              status);
-    }
-}
-
-// Callback to be invoked for error alert indication.
-std::function<void(wifi_request_id, char*, int, int)>
-    on_error_alert_internal_callback;
-void onAsyncErrorAlert(wifi_request_id id, char* buffer, int buffer_size,
-                       int err_code) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_error_alert_internal_callback) {
-        on_error_alert_internal_callback(id, buffer, buffer_size, err_code);
-    }
-}
-
-// Callback to be invoked for radio mode change indication.
-std::function<void(wifi_request_id, uint32_t, wifi_mac_info*)>
-    on_radio_mode_change_internal_callback;
-void onAsyncRadioModeChange(wifi_request_id id, uint32_t num_macs,
-                            wifi_mac_info* mac_infos) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_radio_mode_change_internal_callback) {
-        on_radio_mode_change_internal_callback(id, num_macs, mac_infos);
-    }
-}
-
-// Callback to be invoked for rtt results results.
-std::function<void(wifi_request_id, unsigned num_results,
-                   wifi_rtt_result* rtt_results[])>
-    on_rtt_results_internal_callback;
-void onAsyncRttResults(wifi_request_id id, unsigned num_results,
-                       wifi_rtt_result* rtt_results[]) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_rtt_results_internal_callback) {
-        on_rtt_results_internal_callback(id, num_results, rtt_results);
-        on_rtt_results_internal_callback = nullptr;
-    }
-}
-
-// Callbacks for the various NAN operations.
-// NOTE: These have very little conversions to perform before invoking the user
-// callbacks.
-// So, handle all of them here directly to avoid adding an unnecessary layer.
-std::function<void(transaction_id, const NanResponseMsg&)>
-    on_nan_notify_response_user_callback;
-void onAysncNanNotifyResponse(transaction_id id, NanResponseMsg* msg) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_notify_response_user_callback && msg) {
-        on_nan_notify_response_user_callback(id, *msg);
-    }
-}
-
-std::function<void(const NanPublishRepliedInd&)>
-    on_nan_event_publish_replied_user_callback;
-void onAysncNanEventPublishReplied(NanPublishRepliedInd* /* event */) {
-    LOG(ERROR) << "onAysncNanEventPublishReplied triggered";
-}
-
-std::function<void(const NanPublishTerminatedInd&)>
-    on_nan_event_publish_terminated_user_callback;
-void onAysncNanEventPublishTerminated(NanPublishTerminatedInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_publish_terminated_user_callback && event) {
-        on_nan_event_publish_terminated_user_callback(*event);
-    }
-}
-
-std::function<void(const NanMatchInd&)> on_nan_event_match_user_callback;
-void onAysncNanEventMatch(NanMatchInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_match_user_callback && event) {
-        on_nan_event_match_user_callback(*event);
-    }
-}
-
-std::function<void(const NanMatchExpiredInd&)>
-    on_nan_event_match_expired_user_callback;
-void onAysncNanEventMatchExpired(NanMatchExpiredInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_match_expired_user_callback && event) {
-        on_nan_event_match_expired_user_callback(*event);
-    }
-}
-
-std::function<void(const NanSubscribeTerminatedInd&)>
-    on_nan_event_subscribe_terminated_user_callback;
-void onAysncNanEventSubscribeTerminated(NanSubscribeTerminatedInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_subscribe_terminated_user_callback && event) {
-        on_nan_event_subscribe_terminated_user_callback(*event);
-    }
-}
-
-std::function<void(const NanFollowupInd&)> on_nan_event_followup_user_callback;
-void onAysncNanEventFollowup(NanFollowupInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_followup_user_callback && event) {
-        on_nan_event_followup_user_callback(*event);
-    }
-}
-
-std::function<void(const NanDiscEngEventInd&)>
-    on_nan_event_disc_eng_event_user_callback;
-void onAysncNanEventDiscEngEvent(NanDiscEngEventInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_disc_eng_event_user_callback && event) {
-        on_nan_event_disc_eng_event_user_callback(*event);
-    }
-}
-
-std::function<void(const NanDisabledInd&)> on_nan_event_disabled_user_callback;
-void onAysncNanEventDisabled(NanDisabledInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_disabled_user_callback && event) {
-        on_nan_event_disabled_user_callback(*event);
-    }
-}
-
-std::function<void(const NanTCAInd&)> on_nan_event_tca_user_callback;
-void onAysncNanEventTca(NanTCAInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_tca_user_callback && event) {
-        on_nan_event_tca_user_callback(*event);
-    }
-}
-
-std::function<void(const NanBeaconSdfPayloadInd&)>
-    on_nan_event_beacon_sdf_payload_user_callback;
-void onAysncNanEventBeaconSdfPayload(NanBeaconSdfPayloadInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_beacon_sdf_payload_user_callback && event) {
-        on_nan_event_beacon_sdf_payload_user_callback(*event);
-    }
-}
-
-std::function<void(const NanDataPathRequestInd&)>
-    on_nan_event_data_path_request_user_callback;
-void onAysncNanEventDataPathRequest(NanDataPathRequestInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_data_path_request_user_callback && event) {
-        on_nan_event_data_path_request_user_callback(*event);
-    }
-}
-std::function<void(const NanDataPathConfirmInd&)>
-    on_nan_event_data_path_confirm_user_callback;
-void onAysncNanEventDataPathConfirm(NanDataPathConfirmInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_data_path_confirm_user_callback && event) {
-        on_nan_event_data_path_confirm_user_callback(*event);
-    }
-}
-
-std::function<void(const NanDataPathEndInd&)>
-    on_nan_event_data_path_end_user_callback;
-void onAysncNanEventDataPathEnd(NanDataPathEndInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_data_path_end_user_callback && event) {
-        on_nan_event_data_path_end_user_callback(*event);
-    }
-}
-
-std::function<void(const NanTransmitFollowupInd&)>
-    on_nan_event_transmit_follow_up_user_callback;
-void onAysncNanEventTransmitFollowUp(NanTransmitFollowupInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_transmit_follow_up_user_callback && event) {
-        on_nan_event_transmit_follow_up_user_callback(*event);
-    }
-}
-
-std::function<void(const NanRangeRequestInd&)>
-    on_nan_event_range_request_user_callback;
-void onAysncNanEventRangeRequest(NanRangeRequestInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_range_request_user_callback && event) {
-        on_nan_event_range_request_user_callback(*event);
-    }
-}
-
-std::function<void(const NanRangeReportInd&)>
-    on_nan_event_range_report_user_callback;
-void onAysncNanEventRangeReport(NanRangeReportInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_range_report_user_callback && event) {
-        on_nan_event_range_report_user_callback(*event);
-    }
-}
-
-std::function<void(const NanDataPathScheduleUpdateInd&)>
-    on_nan_event_schedule_update_user_callback;
-void onAsyncNanEventScheduleUpdate(NanDataPathScheduleUpdateInd* event) {
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (on_nan_event_schedule_update_user_callback && event) {
-        on_nan_event_schedule_update_user_callback(*event);
-    }
-}
-// End of the free-standing "C" style callbacks.
-
-WifiLegacyHal::WifiLegacyHal(
-    const std::weak_ptr<wifi_system::InterfaceTool> iface_tool)
-    : global_handle_(nullptr),
-      awaiting_event_loop_termination_(false),
-      is_started_(false),
-      iface_tool_(iface_tool) {}
-
-wifi_error WifiLegacyHal::initialize() {
-    LOG(DEBUG) << "Initialize legacy HAL";
-    // TODO: Add back the HAL Tool if we need to. All we need from the HAL tool
-    // for now is this function call which we can directly call.
-    if (!initHalFuncTableWithStubs(&global_func_table_)) {
-        LOG(ERROR)
-            << "Failed to initialize legacy hal function table with stubs";
-        return WIFI_ERROR_UNKNOWN;
-    }
-    wifi_error status = init_wifi_vendor_hal_func_table(&global_func_table_);
-    if (status != WIFI_SUCCESS) {
-        LOG(ERROR) << "Failed to initialize legacy hal function table";
-    }
-    return status;
-}
-
-wifi_error WifiLegacyHal::start() {
-    // Ensure that we're starting in a good state.
-    CHECK(global_func_table_.wifi_initialize && !global_handle_ &&
-          iface_name_to_handle_.empty() && !awaiting_event_loop_termination_);
-    if (is_started_) {
-        LOG(DEBUG) << "Legacy HAL already started";
-        return WIFI_SUCCESS;
-    }
-    LOG(DEBUG) << "Waiting for the driver ready";
-    wifi_error status = global_func_table_.wifi_wait_for_driver_ready();
-    if (status == WIFI_ERROR_TIMED_OUT) {
-        LOG(ERROR) << "Timed out awaiting driver ready";
-        return status;
-    }
-    property_set(kDriverPropName, "ok");
-
-    LOG(DEBUG) << "Starting legacy HAL";
-    if (!iface_tool_.lock()->SetWifiUpState(true)) {
-        LOG(ERROR) << "Failed to set WiFi interface up";
-        return WIFI_ERROR_UNKNOWN;
-    }
-    status = global_func_table_.wifi_initialize(&global_handle_);
-    if (status != WIFI_SUCCESS || !global_handle_) {
-        LOG(ERROR) << "Failed to retrieve global handle";
-        return status;
-    }
-    std::thread(&WifiLegacyHal::runEventLoop, this).detach();
-    status = retrieveIfaceHandles();
-    if (status != WIFI_SUCCESS || iface_name_to_handle_.empty()) {
-        LOG(ERROR) << "Failed to retrieve wlan interface handle";
-        return status;
-    }
-    LOG(DEBUG) << "Legacy HAL start complete";
-    is_started_ = true;
-    return WIFI_SUCCESS;
-}
-
-wifi_error WifiLegacyHal::stop(
-    /* NONNULL */ std::unique_lock<std::recursive_mutex>* lock,
-    const std::function<void()>& on_stop_complete_user_callback) {
-    if (!is_started_) {
-        LOG(DEBUG) << "Legacy HAL already stopped";
-        on_stop_complete_user_callback();
-        return WIFI_SUCCESS;
-    }
-    LOG(DEBUG) << "Stopping legacy HAL";
-    on_stop_complete_internal_callback = [on_stop_complete_user_callback,
-                                          this](wifi_handle handle) {
-        CHECK_EQ(global_handle_, handle) << "Handle mismatch";
-        LOG(INFO) << "Legacy HAL stop complete callback received";
-        // Invalidate all the internal pointers now that the HAL is
-        // stopped.
-        invalidate();
-        iface_tool_.lock()->SetWifiUpState(false);
-        on_stop_complete_user_callback();
-        is_started_ = false;
-    };
-    awaiting_event_loop_termination_ = true;
-    global_func_table_.wifi_cleanup(global_handle_, onAsyncStopComplete);
-    const auto status = stop_wait_cv_.wait_for(
-        *lock, std::chrono::milliseconds(kMaxStopCompleteWaitMs),
-        [this] { return !awaiting_event_loop_termination_; });
-    if (!status) {
-        LOG(ERROR) << "Legacy HAL stop failed or timed out";
-        return WIFI_ERROR_UNKNOWN;
-    }
-    LOG(DEBUG) << "Legacy HAL stop complete";
-    return WIFI_SUCCESS;
-}
-
-bool WifiLegacyHal::isStarted() { return is_started_; }
-
-std::pair<wifi_error, std::string> WifiLegacyHal::getDriverVersion(
-    const std::string& iface_name) {
-    std::array<char, kMaxVersionStringLength> buffer;
-    buffer.fill(0);
-    wifi_error status = global_func_table_.wifi_get_driver_version(
-        getIfaceHandle(iface_name), buffer.data(), buffer.size());
-    return {status, buffer.data()};
-}
-
-std::pair<wifi_error, std::string> WifiLegacyHal::getFirmwareVersion(
-    const std::string& iface_name) {
-    std::array<char, kMaxVersionStringLength> buffer;
-    buffer.fill(0);
-    wifi_error status = global_func_table_.wifi_get_firmware_version(
-        getIfaceHandle(iface_name), buffer.data(), buffer.size());
-    return {status, buffer.data()};
-}
-
-std::pair<wifi_error, std::vector<uint8_t>>
-WifiLegacyHal::requestDriverMemoryDump(const std::string& iface_name) {
-    std::vector<uint8_t> driver_dump;
-    on_driver_memory_dump_internal_callback = [&driver_dump](char* buffer,
-                                                             int buffer_size) {
-        driver_dump.insert(driver_dump.end(),
-                           reinterpret_cast<uint8_t*>(buffer),
-                           reinterpret_cast<uint8_t*>(buffer) + buffer_size);
-    };
-    wifi_error status = global_func_table_.wifi_get_driver_memory_dump(
-        getIfaceHandle(iface_name), {onSyncDriverMemoryDump});
-    on_driver_memory_dump_internal_callback = nullptr;
-    return {status, std::move(driver_dump)};
-}
-
-std::pair<wifi_error, std::vector<uint8_t>>
-WifiLegacyHal::requestFirmwareMemoryDump(const std::string& iface_name) {
-    std::vector<uint8_t> firmware_dump;
-    on_firmware_memory_dump_internal_callback =
-        [&firmware_dump](char* buffer, int buffer_size) {
-            firmware_dump.insert(
-                firmware_dump.end(), reinterpret_cast<uint8_t*>(buffer),
-                reinterpret_cast<uint8_t*>(buffer) + buffer_size);
-        };
-    wifi_error status = global_func_table_.wifi_get_firmware_memory_dump(
-        getIfaceHandle(iface_name), {onSyncFirmwareMemoryDump});
-    on_firmware_memory_dump_internal_callback = nullptr;
-    return {status, std::move(firmware_dump)};
-}
-
-std::pair<wifi_error, uint32_t> WifiLegacyHal::getSupportedFeatureSet(
-    const std::string& iface_name) {
-    feature_set set;
-    static_assert(sizeof(set) == sizeof(uint32_t),
-                  "Some feature_flags can not be represented in output");
-    wifi_error status = global_func_table_.wifi_get_supported_feature_set(
-        getIfaceHandle(iface_name), &set);
-    return {status, static_cast<uint32_t>(set)};
-}
-
-std::pair<wifi_error, PacketFilterCapabilities>
-WifiLegacyHal::getPacketFilterCapabilities(const std::string& iface_name) {
-    PacketFilterCapabilities caps;
-    wifi_error status = global_func_table_.wifi_get_packet_filter_capabilities(
-        getIfaceHandle(iface_name), &caps.version, &caps.max_len);
-    return {status, caps};
-}
-
-wifi_error WifiLegacyHal::setPacketFilter(const std::string& iface_name,
-                                          const std::vector<uint8_t>& program) {
-    return global_func_table_.wifi_set_packet_filter(
-        getIfaceHandle(iface_name), program.data(), program.size());
-}
-
-std::pair<wifi_error, std::vector<uint8_t>>
-WifiLegacyHal::readApfPacketFilterData(const std::string& iface_name) {
-    PacketFilterCapabilities caps;
-    wifi_error status = global_func_table_.wifi_get_packet_filter_capabilities(
-        getIfaceHandle(iface_name), &caps.version, &caps.max_len);
-    if (status != WIFI_SUCCESS) {
-        return {status, {}};
-    }
-
-    // Size the buffer to read the entire program & work memory.
-    std::vector<uint8_t> buffer(caps.max_len);
-
-    status = global_func_table_.wifi_read_packet_filter(
-        getIfaceHandle(iface_name), /*src_offset=*/0, buffer.data(),
-        buffer.size());
-    return {status, move(buffer)};
-}
-
-std::pair<wifi_error, wifi_gscan_capabilities>
-WifiLegacyHal::getGscanCapabilities(const std::string& iface_name) {
-    wifi_gscan_capabilities caps;
-    wifi_error status = global_func_table_.wifi_get_gscan_capabilities(
-        getIfaceHandle(iface_name), &caps);
-    return {status, caps};
-}
-
-wifi_error WifiLegacyHal::startGscan(
-    const std::string& iface_name, wifi_request_id id,
-    const wifi_scan_cmd_params& params,
-    const std::function<void(wifi_request_id)>& on_failure_user_callback,
-    const on_gscan_results_callback& on_results_user_callback,
-    const on_gscan_full_result_callback& on_full_result_user_callback) {
-    // If there is already an ongoing background scan, reject new scan requests.
-    if (on_gscan_event_internal_callback ||
-        on_gscan_full_result_internal_callback) {
-        return WIFI_ERROR_NOT_AVAILABLE;
-    }
-
-    // This callback will be used to either trigger |on_results_user_callback|
-    // or |on_failure_user_callback|.
-    on_gscan_event_internal_callback =
-        [iface_name, on_failure_user_callback, on_results_user_callback, this](
-            wifi_request_id id, wifi_scan_event event) {
-            switch (event) {
-                case WIFI_SCAN_RESULTS_AVAILABLE:
-                case WIFI_SCAN_THRESHOLD_NUM_SCANS:
-                case WIFI_SCAN_THRESHOLD_PERCENT: {
-                    wifi_error status;
-                    std::vector<wifi_cached_scan_results> cached_scan_results;
-                    std::tie(status, cached_scan_results) =
-                        getGscanCachedResults(iface_name);
-                    if (status == WIFI_SUCCESS) {
-                        on_results_user_callback(id, cached_scan_results);
-                        return;
-                    }
-                    FALLTHROUGH_INTENDED;
-                }
-                // Fall through if failed. Failure to retrieve cached scan
-                // results should trigger a background scan failure.
-                case WIFI_SCAN_FAILED:
-                    on_failure_user_callback(id);
-                    on_gscan_event_internal_callback = nullptr;
-                    on_gscan_full_result_internal_callback = nullptr;
-                    return;
-            }
-            LOG(FATAL) << "Unexpected gscan event received: " << event;
-        };
-
-    on_gscan_full_result_internal_callback = [on_full_result_user_callback](
-                                                 wifi_request_id id,
-                                                 wifi_scan_result* result,
-                                                 uint32_t buckets_scanned) {
-        if (result) {
-            on_full_result_user_callback(id, result, buckets_scanned);
-        }
-    };
-
-    wifi_scan_result_handler handler = {onAsyncGscanFullResult,
-                                        onAsyncGscanEvent};
-    wifi_error status = global_func_table_.wifi_start_gscan(
-        id, getIfaceHandle(iface_name), params, handler);
-    if (status != WIFI_SUCCESS) {
-        on_gscan_event_internal_callback = nullptr;
-        on_gscan_full_result_internal_callback = nullptr;
-    }
-    return status;
-}
-
-wifi_error WifiLegacyHal::stopGscan(const std::string& iface_name,
-                                    wifi_request_id id) {
-    // If there is no an ongoing background scan, reject stop requests.
-    // TODO(b/32337212): This needs to be handled by the HIDL object because we
-    // need to return the NOT_STARTED error code.
-    if (!on_gscan_event_internal_callback &&
-        !on_gscan_full_result_internal_callback) {
-        return WIFI_ERROR_NOT_AVAILABLE;
-    }
-    wifi_error status =
-        global_func_table_.wifi_stop_gscan(id, getIfaceHandle(iface_name));
-    // If the request Id is wrong, don't stop the ongoing background scan. Any
-    // other error should be treated as the end of background scan.
-    if (status != WIFI_ERROR_INVALID_REQUEST_ID) {
-        on_gscan_event_internal_callback = nullptr;
-        on_gscan_full_result_internal_callback = nullptr;
-    }
-    return status;
-}
-
-std::pair<wifi_error, std::vector<uint32_t>>
-WifiLegacyHal::getValidFrequenciesForBand(const std::string& iface_name,
-                                          wifi_band band) {
-    static_assert(sizeof(uint32_t) >= sizeof(wifi_channel),
-                  "Wifi Channel cannot be represented in output");
-    std::vector<uint32_t> freqs;
-    freqs.resize(kMaxGscanFrequenciesForBand);
-    int32_t num_freqs = 0;
-    wifi_error status = global_func_table_.wifi_get_valid_channels(
-        getIfaceHandle(iface_name), band, freqs.size(),
-        reinterpret_cast<wifi_channel*>(freqs.data()), &num_freqs);
-    CHECK(num_freqs >= 0 &&
-          static_cast<uint32_t>(num_freqs) <= kMaxGscanFrequenciesForBand);
-    freqs.resize(num_freqs);
-    return {status, std::move(freqs)};
-}
-
-wifi_error WifiLegacyHal::setDfsFlag(const std::string& iface_name,
-                                     bool dfs_on) {
-    return global_func_table_.wifi_set_nodfs_flag(getIfaceHandle(iface_name),
-                                                  dfs_on ? 0 : 1);
-}
-
-wifi_error WifiLegacyHal::enableLinkLayerStats(const std::string& iface_name,
-                                               bool debug) {
-    wifi_link_layer_params params;
-    params.mpdu_size_threshold = kLinkLayerStatsDataMpduSizeThreshold;
-    params.aggressive_statistics_gathering = debug;
-    return global_func_table_.wifi_set_link_stats(getIfaceHandle(iface_name),
-                                                  params);
-}
-
-wifi_error WifiLegacyHal::disableLinkLayerStats(const std::string& iface_name) {
-    // TODO: Do we care about these responses?
-    uint32_t clear_mask_rsp;
-    uint8_t stop_rsp;
-    return global_func_table_.wifi_clear_link_stats(
-        getIfaceHandle(iface_name), 0xFFFFFFFF, &clear_mask_rsp, 1, &stop_rsp);
-}
-
-std::pair<wifi_error, LinkLayerStats> WifiLegacyHal::getLinkLayerStats(
-    const std::string& iface_name) {
-    LinkLayerStats link_stats{};
-    LinkLayerStats* link_stats_ptr = &link_stats;
-
-    on_link_layer_stats_result_internal_callback =
-        [&link_stats_ptr](wifi_request_id /* id */,
-                          wifi_iface_stat* iface_stats_ptr, int num_radios,
-                          wifi_radio_stat* radio_stats_ptr) {
-            wifi_radio_stat* l_radio_stats_ptr;
-
-            if (iface_stats_ptr != nullptr) {
-                link_stats_ptr->iface = *iface_stats_ptr;
-                link_stats_ptr->iface.num_peers = 0;
-            } else {
-                LOG(ERROR) << "Invalid iface stats in link layer stats";
-            }
-            if (num_radios <= 0 || radio_stats_ptr == nullptr) {
-                LOG(ERROR) << "Invalid radio stats in link layer stats";
-                return;
-            }
-            l_radio_stats_ptr = radio_stats_ptr;
-            for (int i = 0; i < num_radios; i++) {
-                LinkLayerRadioStats radio;
-
-                radio.stats = *l_radio_stats_ptr;
-                // Copy over the tx level array to the separate vector.
-                if (l_radio_stats_ptr->num_tx_levels > 0 &&
-                    l_radio_stats_ptr->tx_time_per_levels != nullptr) {
-                    radio.tx_time_per_levels.assign(
-                        l_radio_stats_ptr->tx_time_per_levels,
-                        l_radio_stats_ptr->tx_time_per_levels +
-                            l_radio_stats_ptr->num_tx_levels);
-                }
-                radio.stats.num_tx_levels = 0;
-                radio.stats.tx_time_per_levels = nullptr;
-                /* Copy over the channel stat to separate vector */
-                if (l_radio_stats_ptr->num_channels > 0) {
-                    /* Copy the channel stats */
-                    radio.channel_stats.assign(
-                        l_radio_stats_ptr->channels,
-                        l_radio_stats_ptr->channels +
-                            l_radio_stats_ptr->num_channels);
-                }
-                link_stats_ptr->radios.push_back(radio);
-                l_radio_stats_ptr =
-                    (wifi_radio_stat*)((u8*)l_radio_stats_ptr +
-                                       sizeof(wifi_radio_stat) +
-                                       (sizeof(wifi_channel_stat) *
-                                        l_radio_stats_ptr->num_channels));
-            }
-        };
-
-    wifi_error status = global_func_table_.wifi_get_link_stats(
-        0, getIfaceHandle(iface_name), {onSyncLinkLayerStatsResult});
-    on_link_layer_stats_result_internal_callback = nullptr;
-    return {status, link_stats};
-}
-
-wifi_error WifiLegacyHal::startRssiMonitoring(
-    const std::string& iface_name, wifi_request_id id, int8_t max_rssi,
-    int8_t min_rssi,
-    const on_rssi_threshold_breached_callback&
-        on_threshold_breached_user_callback) {
-    if (on_rssi_threshold_breached_internal_callback) {
-        return WIFI_ERROR_NOT_AVAILABLE;
-    }
-    on_rssi_threshold_breached_internal_callback =
-        [on_threshold_breached_user_callback](wifi_request_id id,
-                                              uint8_t* bssid_ptr, int8_t rssi) {
-            if (!bssid_ptr) {
-                return;
-            }
-            std::array<uint8_t, 6> bssid_arr;
-            // |bssid_ptr| pointer is assumed to have 6 bytes for the mac
-            // address.
-            std::copy(bssid_ptr, bssid_ptr + 6, std::begin(bssid_arr));
-            on_threshold_breached_user_callback(id, bssid_arr, rssi);
-        };
-    wifi_error status = global_func_table_.wifi_start_rssi_monitoring(
-        id, getIfaceHandle(iface_name), max_rssi, min_rssi,
-        {onAsyncRssiThresholdBreached});
-    if (status != WIFI_SUCCESS) {
-        on_rssi_threshold_breached_internal_callback = nullptr;
-    }
-    return status;
-}
-
-wifi_error WifiLegacyHal::stopRssiMonitoring(const std::string& iface_name,
-                                             wifi_request_id id) {
-    if (!on_rssi_threshold_breached_internal_callback) {
-        return WIFI_ERROR_NOT_AVAILABLE;
-    }
-    wifi_error status = global_func_table_.wifi_stop_rssi_monitoring(
-        id, getIfaceHandle(iface_name));
-    // If the request Id is wrong, don't stop the ongoing rssi monitoring. Any
-    // other error should be treated as the end of background scan.
-    if (status != WIFI_ERROR_INVALID_REQUEST_ID) {
-        on_rssi_threshold_breached_internal_callback = nullptr;
-    }
-    return status;
-}
-
-std::pair<wifi_error, wifi_roaming_capabilities>
-WifiLegacyHal::getRoamingCapabilities(const std::string& iface_name) {
-    wifi_roaming_capabilities caps;
-    wifi_error status = global_func_table_.wifi_get_roaming_capabilities(
-        getIfaceHandle(iface_name), &caps);
-    return {status, caps};
-}
-
-wifi_error WifiLegacyHal::configureRoaming(const std::string& iface_name,
-                                           const wifi_roaming_config& config) {
-    wifi_roaming_config config_internal = config;
-    return global_func_table_.wifi_configure_roaming(getIfaceHandle(iface_name),
-                                                     &config_internal);
-}
-
-wifi_error WifiLegacyHal::enableFirmwareRoaming(const std::string& iface_name,
-                                                fw_roaming_state_t state) {
-    return global_func_table_.wifi_enable_firmware_roaming(
-        getIfaceHandle(iface_name), state);
-}
-
-wifi_error WifiLegacyHal::configureNdOffload(const std::string& iface_name,
-                                             bool enable) {
-    return global_func_table_.wifi_configure_nd_offload(
-        getIfaceHandle(iface_name), enable);
-}
-
-wifi_error WifiLegacyHal::startSendingOffloadedPacket(
-    const std::string& iface_name, uint32_t cmd_id, uint16_t ether_type,
-    const std::vector<uint8_t>& ip_packet_data,
-    const std::array<uint8_t, 6>& src_address,
-    const std::array<uint8_t, 6>& dst_address, uint32_t period_in_ms) {
-    std::vector<uint8_t> ip_packet_data_internal(ip_packet_data);
-    std::vector<uint8_t> src_address_internal(
-        src_address.data(), src_address.data() + src_address.size());
-    std::vector<uint8_t> dst_address_internal(
-        dst_address.data(), dst_address.data() + dst_address.size());
-    return global_func_table_.wifi_start_sending_offloaded_packet(
-        cmd_id, getIfaceHandle(iface_name), ether_type,
-        ip_packet_data_internal.data(), ip_packet_data_internal.size(),
-        src_address_internal.data(), dst_address_internal.data(), period_in_ms);
-}
-
-wifi_error WifiLegacyHal::stopSendingOffloadedPacket(
-    const std::string& iface_name, uint32_t cmd_id) {
-    return global_func_table_.wifi_stop_sending_offloaded_packet(
-        cmd_id, getIfaceHandle(iface_name));
-}
-
-wifi_error WifiLegacyHal::setScanningMacOui(const std::string& iface_name,
-                                            const std::array<uint8_t, 3>& oui) {
-    std::vector<uint8_t> oui_internal(oui.data(), oui.data() + oui.size());
-    return global_func_table_.wifi_set_scanning_mac_oui(
-        getIfaceHandle(iface_name), oui_internal.data());
-}
-
-wifi_error WifiLegacyHal::selectTxPowerScenario(const std::string& iface_name,
-                                                wifi_power_scenario scenario) {
-    return global_func_table_.wifi_select_tx_power_scenario(
-        getIfaceHandle(iface_name), scenario);
-}
-
-wifi_error WifiLegacyHal::resetTxPowerScenario(const std::string& iface_name) {
-    return global_func_table_.wifi_reset_tx_power_scenario(
-        getIfaceHandle(iface_name));
-}
-
-wifi_error WifiLegacyHal::setLatencyMode(const std::string& iface_name,
-                                         wifi_latency_mode mode) {
-    return global_func_table_.wifi_set_latency_mode(getIfaceHandle(iface_name),
-                                                    mode);
-}
-
-std::pair<wifi_error, uint32_t> WifiLegacyHal::getLoggerSupportedFeatureSet(
-    const std::string& iface_name) {
-    uint32_t supported_feature_flags;
-    wifi_error status =
-        global_func_table_.wifi_get_logger_supported_feature_set(
-            getIfaceHandle(iface_name), &supported_feature_flags);
-    return {status, supported_feature_flags};
-}
-
-wifi_error WifiLegacyHal::startPktFateMonitoring(
-    const std::string& iface_name) {
-    return global_func_table_.wifi_start_pkt_fate_monitoring(
-        getIfaceHandle(iface_name));
-}
-
-std::pair<wifi_error, std::vector<wifi_tx_report>> WifiLegacyHal::getTxPktFates(
-    const std::string& iface_name) {
-    std::vector<wifi_tx_report> tx_pkt_fates;
-    tx_pkt_fates.resize(MAX_FATE_LOG_LEN);
-    size_t num_fates = 0;
-    wifi_error status = global_func_table_.wifi_get_tx_pkt_fates(
-        getIfaceHandle(iface_name), tx_pkt_fates.data(), tx_pkt_fates.size(),
-        &num_fates);
-    CHECK(num_fates <= MAX_FATE_LOG_LEN);
-    tx_pkt_fates.resize(num_fates);
-    return {status, std::move(tx_pkt_fates)};
-}
-
-std::pair<wifi_error, std::vector<wifi_rx_report>> WifiLegacyHal::getRxPktFates(
-    const std::string& iface_name) {
-    std::vector<wifi_rx_report> rx_pkt_fates;
-    rx_pkt_fates.resize(MAX_FATE_LOG_LEN);
-    size_t num_fates = 0;
-    wifi_error status = global_func_table_.wifi_get_rx_pkt_fates(
-        getIfaceHandle(iface_name), rx_pkt_fates.data(), rx_pkt_fates.size(),
-        &num_fates);
-    CHECK(num_fates <= MAX_FATE_LOG_LEN);
-    rx_pkt_fates.resize(num_fates);
-    return {status, std::move(rx_pkt_fates)};
-}
-
-std::pair<wifi_error, WakeReasonStats> WifiLegacyHal::getWakeReasonStats(
-    const std::string& iface_name) {
-    WakeReasonStats stats;
-    stats.cmd_event_wake_cnt.resize(kMaxWakeReasonStatsArraySize);
-    stats.driver_fw_local_wake_cnt.resize(kMaxWakeReasonStatsArraySize);
-
-    // This legacy struct needs separate memory to store the variable sized wake
-    // reason types.
-    stats.wake_reason_cnt.cmd_event_wake_cnt =
-        reinterpret_cast<int32_t*>(stats.cmd_event_wake_cnt.data());
-    stats.wake_reason_cnt.cmd_event_wake_cnt_sz =
-        stats.cmd_event_wake_cnt.size();
-    stats.wake_reason_cnt.cmd_event_wake_cnt_used = 0;
-    stats.wake_reason_cnt.driver_fw_local_wake_cnt =
-        reinterpret_cast<int32_t*>(stats.driver_fw_local_wake_cnt.data());
-    stats.wake_reason_cnt.driver_fw_local_wake_cnt_sz =
-        stats.driver_fw_local_wake_cnt.size();
-    stats.wake_reason_cnt.driver_fw_local_wake_cnt_used = 0;
-
-    wifi_error status = global_func_table_.wifi_get_wake_reason_stats(
-        getIfaceHandle(iface_name), &stats.wake_reason_cnt);
-
-    CHECK(
-        stats.wake_reason_cnt.cmd_event_wake_cnt_used >= 0 &&
-        static_cast<uint32_t>(stats.wake_reason_cnt.cmd_event_wake_cnt_used) <=
-            kMaxWakeReasonStatsArraySize);
-    stats.cmd_event_wake_cnt.resize(
-        stats.wake_reason_cnt.cmd_event_wake_cnt_used);
-    stats.wake_reason_cnt.cmd_event_wake_cnt = nullptr;
-
-    CHECK(stats.wake_reason_cnt.driver_fw_local_wake_cnt_used >= 0 &&
-          static_cast<uint32_t>(
-              stats.wake_reason_cnt.driver_fw_local_wake_cnt_used) <=
-              kMaxWakeReasonStatsArraySize);
-    stats.driver_fw_local_wake_cnt.resize(
-        stats.wake_reason_cnt.driver_fw_local_wake_cnt_used);
-    stats.wake_reason_cnt.driver_fw_local_wake_cnt = nullptr;
-
-    return {status, stats};
-}
-
-wifi_error WifiLegacyHal::registerRingBufferCallbackHandler(
-    const std::string& iface_name,
-    const on_ring_buffer_data_callback& on_user_data_callback) {
-    if (on_ring_buffer_data_internal_callback) {
-        return WIFI_ERROR_NOT_AVAILABLE;
-    }
-    on_ring_buffer_data_internal_callback =
-        [on_user_data_callback](char* ring_name, char* buffer, int buffer_size,
-                                wifi_ring_buffer_status* status) {
-            if (status && buffer) {
-                std::vector<uint8_t> buffer_vector(
-                    reinterpret_cast<uint8_t*>(buffer),
-                    reinterpret_cast<uint8_t*>(buffer) + buffer_size);
-                on_user_data_callback(ring_name, buffer_vector, *status);
-            }
-        };
-    wifi_error status = global_func_table_.wifi_set_log_handler(
-        0, getIfaceHandle(iface_name), {onAsyncRingBufferData});
-    if (status != WIFI_SUCCESS) {
-        on_ring_buffer_data_internal_callback = nullptr;
-    }
-    return status;
-}
-
-wifi_error WifiLegacyHal::deregisterRingBufferCallbackHandler(
-    const std::string& iface_name) {
-    if (!on_ring_buffer_data_internal_callback) {
-        return WIFI_ERROR_NOT_AVAILABLE;
-    }
-    on_ring_buffer_data_internal_callback = nullptr;
-    return global_func_table_.wifi_reset_log_handler(
-        0, getIfaceHandle(iface_name));
-}
-
-std::pair<wifi_error, std::vector<wifi_ring_buffer_status>>
-WifiLegacyHal::getRingBuffersStatus(const std::string& iface_name) {
-    std::vector<wifi_ring_buffer_status> ring_buffers_status;
-    ring_buffers_status.resize(kMaxRingBuffers);
-    uint32_t num_rings = kMaxRingBuffers;
-    wifi_error status = global_func_table_.wifi_get_ring_buffers_status(
-        getIfaceHandle(iface_name), &num_rings, ring_buffers_status.data());
-    CHECK(num_rings <= kMaxRingBuffers);
-    ring_buffers_status.resize(num_rings);
-    return {status, std::move(ring_buffers_status)};
-}
-
-wifi_error WifiLegacyHal::startRingBufferLogging(const std::string& iface_name,
-                                                 const std::string& ring_name,
-                                                 uint32_t verbose_level,
-                                                 uint32_t max_interval_sec,
-                                                 uint32_t min_data_size) {
-    return global_func_table_.wifi_start_logging(
-        getIfaceHandle(iface_name), verbose_level, 0, max_interval_sec,
-        min_data_size, makeCharVec(ring_name).data());
-}
-
-wifi_error WifiLegacyHal::getRingBufferData(const std::string& iface_name,
-                                            const std::string& ring_name) {
-    return global_func_table_.wifi_get_ring_data(getIfaceHandle(iface_name),
-                                                 makeCharVec(ring_name).data());
-}
-
-wifi_error WifiLegacyHal::registerErrorAlertCallbackHandler(
-    const std::string& iface_name,
-    const on_error_alert_callback& on_user_alert_callback) {
-    if (on_error_alert_internal_callback) {
-        return WIFI_ERROR_NOT_AVAILABLE;
-    }
-    on_error_alert_internal_callback = [on_user_alert_callback](
-                                           wifi_request_id id, char* buffer,
-                                           int buffer_size, int err_code) {
-        if (buffer) {
-            CHECK(id == 0);
-            on_user_alert_callback(
-                err_code,
-                std::vector<uint8_t>(
-                    reinterpret_cast<uint8_t*>(buffer),
-                    reinterpret_cast<uint8_t*>(buffer) + buffer_size));
-        }
-    };
-    wifi_error status = global_func_table_.wifi_set_alert_handler(
-        0, getIfaceHandle(iface_name), {onAsyncErrorAlert});
-    if (status != WIFI_SUCCESS) {
-        on_error_alert_internal_callback = nullptr;
-    }
-    return status;
-}
-
-wifi_error WifiLegacyHal::deregisterErrorAlertCallbackHandler(
-    const std::string& iface_name) {
-    if (!on_error_alert_internal_callback) {
-        return WIFI_ERROR_NOT_AVAILABLE;
-    }
-    on_error_alert_internal_callback = nullptr;
-    return global_func_table_.wifi_reset_alert_handler(
-        0, getIfaceHandle(iface_name));
-}
-
-wifi_error WifiLegacyHal::registerRadioModeChangeCallbackHandler(
-    const std::string& iface_name,
-    const on_radio_mode_change_callback& on_user_change_callback) {
-    if (on_radio_mode_change_internal_callback) {
-        return WIFI_ERROR_NOT_AVAILABLE;
-    }
-    on_radio_mode_change_internal_callback = [on_user_change_callback](
-                                                 wifi_request_id /* id */,
-                                                 uint32_t num_macs,
-                                                 wifi_mac_info* mac_infos_arr) {
-        if (num_macs > 0 && mac_infos_arr) {
-            std::vector<WifiMacInfo> mac_infos_vec;
-            for (uint32_t i = 0; i < num_macs; i++) {
-                WifiMacInfo mac_info;
-                mac_info.wlan_mac_id = mac_infos_arr[i].wlan_mac_id;
-                mac_info.mac_band = mac_infos_arr[i].mac_band;
-                for (int32_t j = 0; j < mac_infos_arr[i].num_iface; j++) {
-                    WifiIfaceInfo iface_info;
-                    iface_info.name = mac_infos_arr[i].iface_info[j].iface_name;
-                    iface_info.channel = mac_infos_arr[i].iface_info[j].channel;
-                    mac_info.iface_infos.push_back(iface_info);
-                }
-                mac_infos_vec.push_back(mac_info);
-            }
-            on_user_change_callback(mac_infos_vec);
-        }
-    };
-    wifi_error status = global_func_table_.wifi_set_radio_mode_change_handler(
-        0, getIfaceHandle(iface_name), {onAsyncRadioModeChange});
-    if (status != WIFI_SUCCESS) {
-        on_radio_mode_change_internal_callback = nullptr;
-    }
-    return status;
-}
-
-wifi_error WifiLegacyHal::startRttRangeRequest(
-    const std::string& iface_name, wifi_request_id id,
-    const std::vector<wifi_rtt_config>& rtt_configs,
-    const on_rtt_results_callback& on_results_user_callback) {
-    if (on_rtt_results_internal_callback) {
-        return WIFI_ERROR_NOT_AVAILABLE;
-    }
-
-    on_rtt_results_internal_callback =
-        [on_results_user_callback](wifi_request_id id, unsigned num_results,
-                                   wifi_rtt_result* rtt_results[]) {
-            if (num_results > 0 && !rtt_results) {
-                LOG(ERROR) << "Unexpected nullptr in RTT results";
-                return;
-            }
-            std::vector<const wifi_rtt_result*> rtt_results_vec;
-            std::copy_if(rtt_results, rtt_results + num_results,
-                         back_inserter(rtt_results_vec),
-                         [](wifi_rtt_result* rtt_result) {
-                             return rtt_result != nullptr;
-                         });
-            on_results_user_callback(id, rtt_results_vec);
-        };
-
-    std::vector<wifi_rtt_config> rtt_configs_internal(rtt_configs);
-    wifi_error status = global_func_table_.wifi_rtt_range_request(
-        id, getIfaceHandle(iface_name), rtt_configs.size(),
-        rtt_configs_internal.data(), {onAsyncRttResults});
-    if (status != WIFI_SUCCESS) {
-        on_rtt_results_internal_callback = nullptr;
-    }
-    return status;
-}
-
-wifi_error WifiLegacyHal::cancelRttRangeRequest(
-    const std::string& iface_name, wifi_request_id id,
-    const std::vector<std::array<uint8_t, 6>>& mac_addrs) {
-    if (!on_rtt_results_internal_callback) {
-        return WIFI_ERROR_NOT_AVAILABLE;
-    }
-    static_assert(sizeof(mac_addr) == sizeof(std::array<uint8_t, 6>),
-                  "MAC address size mismatch");
-    // TODO: How do we handle partial cancels (i.e only a subset of enabled mac
-    // addressed are cancelled).
-    std::vector<std::array<uint8_t, 6>> mac_addrs_internal(mac_addrs);
-    wifi_error status = global_func_table_.wifi_rtt_range_cancel(
-        id, getIfaceHandle(iface_name), mac_addrs.size(),
-        reinterpret_cast<mac_addr*>(mac_addrs_internal.data()));
-    // If the request Id is wrong, don't stop the ongoing range request. Any
-    // other error should be treated as the end of rtt ranging.
-    if (status != WIFI_ERROR_INVALID_REQUEST_ID) {
-        on_rtt_results_internal_callback = nullptr;
-    }
-    return status;
-}
-
-std::pair<wifi_error, wifi_rtt_capabilities> WifiLegacyHal::getRttCapabilities(
-    const std::string& iface_name) {
-    wifi_rtt_capabilities rtt_caps;
-    wifi_error status = global_func_table_.wifi_get_rtt_capabilities(
-        getIfaceHandle(iface_name), &rtt_caps);
-    return {status, rtt_caps};
-}
-
-std::pair<wifi_error, wifi_rtt_responder> WifiLegacyHal::getRttResponderInfo(
-    const std::string& iface_name) {
-    wifi_rtt_responder rtt_responder;
-    wifi_error status = global_func_table_.wifi_rtt_get_responder_info(
-        getIfaceHandle(iface_name), &rtt_responder);
-    return {status, rtt_responder};
-}
-
-wifi_error WifiLegacyHal::enableRttResponder(
-    const std::string& iface_name, wifi_request_id id,
-    const wifi_channel_info& channel_hint, uint32_t max_duration_secs,
-    const wifi_rtt_responder& info) {
-    wifi_rtt_responder info_internal(info);
-    return global_func_table_.wifi_enable_responder(
-        id, getIfaceHandle(iface_name), channel_hint, max_duration_secs,
-        &info_internal);
-}
-
-wifi_error WifiLegacyHal::disableRttResponder(const std::string& iface_name,
-                                              wifi_request_id id) {
-    return global_func_table_.wifi_disable_responder(
-        id, getIfaceHandle(iface_name));
-}
-
-wifi_error WifiLegacyHal::setRttLci(const std::string& iface_name,
-                                    wifi_request_id id,
-                                    const wifi_lci_information& info) {
-    wifi_lci_information info_internal(info);
-    return global_func_table_.wifi_set_lci(id, getIfaceHandle(iface_name),
-                                           &info_internal);
-}
-
-wifi_error WifiLegacyHal::setRttLcr(const std::string& iface_name,
-                                    wifi_request_id id,
-                                    const wifi_lcr_information& info) {
-    wifi_lcr_information info_internal(info);
-    return global_func_table_.wifi_set_lcr(id, getIfaceHandle(iface_name),
-                                           &info_internal);
-}
-
-wifi_error WifiLegacyHal::nanRegisterCallbackHandlers(
-    const std::string& iface_name, const NanCallbackHandlers& user_callbacks) {
-    on_nan_notify_response_user_callback = user_callbacks.on_notify_response;
-    on_nan_event_publish_terminated_user_callback =
-        user_callbacks.on_event_publish_terminated;
-    on_nan_event_match_user_callback = user_callbacks.on_event_match;
-    on_nan_event_match_expired_user_callback =
-        user_callbacks.on_event_match_expired;
-    on_nan_event_subscribe_terminated_user_callback =
-        user_callbacks.on_event_subscribe_terminated;
-    on_nan_event_followup_user_callback = user_callbacks.on_event_followup;
-    on_nan_event_disc_eng_event_user_callback =
-        user_callbacks.on_event_disc_eng_event;
-    on_nan_event_disabled_user_callback = user_callbacks.on_event_disabled;
-    on_nan_event_tca_user_callback = user_callbacks.on_event_tca;
-    on_nan_event_beacon_sdf_payload_user_callback =
-        user_callbacks.on_event_beacon_sdf_payload;
-    on_nan_event_data_path_request_user_callback =
-        user_callbacks.on_event_data_path_request;
-    on_nan_event_data_path_confirm_user_callback =
-        user_callbacks.on_event_data_path_confirm;
-    on_nan_event_data_path_end_user_callback =
-        user_callbacks.on_event_data_path_end;
-    on_nan_event_transmit_follow_up_user_callback =
-        user_callbacks.on_event_transmit_follow_up;
-    on_nan_event_range_request_user_callback =
-        user_callbacks.on_event_range_request;
-    on_nan_event_range_report_user_callback =
-        user_callbacks.on_event_range_report;
-    on_nan_event_schedule_update_user_callback =
-        user_callbacks.on_event_schedule_update;
-
-    return global_func_table_.wifi_nan_register_handler(
-        getIfaceHandle(iface_name),
-        {onAysncNanNotifyResponse, onAysncNanEventPublishReplied,
-         onAysncNanEventPublishTerminated, onAysncNanEventMatch,
-         onAysncNanEventMatchExpired, onAysncNanEventSubscribeTerminated,
-         onAysncNanEventFollowup, onAysncNanEventDiscEngEvent,
-         onAysncNanEventDisabled, onAysncNanEventTca,
-         onAysncNanEventBeaconSdfPayload, onAysncNanEventDataPathRequest,
-         onAysncNanEventDataPathConfirm, onAysncNanEventDataPathEnd,
-         onAysncNanEventTransmitFollowUp, onAysncNanEventRangeRequest,
-         onAysncNanEventRangeReport, onAsyncNanEventScheduleUpdate});
-}
-
-wifi_error WifiLegacyHal::nanEnableRequest(const std::string& iface_name,
-                                           transaction_id id,
-                                           const NanEnableRequest& msg) {
-    NanEnableRequest msg_internal(msg);
-    return global_func_table_.wifi_nan_enable_request(
-        id, getIfaceHandle(iface_name), &msg_internal);
-}
-
-wifi_error WifiLegacyHal::nanDisableRequest(const std::string& iface_name,
-                                            transaction_id id) {
-    return global_func_table_.wifi_nan_disable_request(
-        id, getIfaceHandle(iface_name));
-}
-
-wifi_error WifiLegacyHal::nanPublishRequest(const std::string& iface_name,
-                                            transaction_id id,
-                                            const NanPublishRequest& msg) {
-    NanPublishRequest msg_internal(msg);
-    return global_func_table_.wifi_nan_publish_request(
-        id, getIfaceHandle(iface_name), &msg_internal);
-}
-
-wifi_error WifiLegacyHal::nanPublishCancelRequest(
-    const std::string& iface_name, transaction_id id,
-    const NanPublishCancelRequest& msg) {
-    NanPublishCancelRequest msg_internal(msg);
-    return global_func_table_.wifi_nan_publish_cancel_request(
-        id, getIfaceHandle(iface_name), &msg_internal);
-}
-
-wifi_error WifiLegacyHal::nanSubscribeRequest(const std::string& iface_name,
-                                              transaction_id id,
-                                              const NanSubscribeRequest& msg) {
-    NanSubscribeRequest msg_internal(msg);
-    return global_func_table_.wifi_nan_subscribe_request(
-        id, getIfaceHandle(iface_name), &msg_internal);
-}
-
-wifi_error WifiLegacyHal::nanSubscribeCancelRequest(
-    const std::string& iface_name, transaction_id id,
-    const NanSubscribeCancelRequest& msg) {
-    NanSubscribeCancelRequest msg_internal(msg);
-    return global_func_table_.wifi_nan_subscribe_cancel_request(
-        id, getIfaceHandle(iface_name), &msg_internal);
-}
-
-wifi_error WifiLegacyHal::nanTransmitFollowupRequest(
-    const std::string& iface_name, transaction_id id,
-    const NanTransmitFollowupRequest& msg) {
-    NanTransmitFollowupRequest msg_internal(msg);
-    return global_func_table_.wifi_nan_transmit_followup_request(
-        id, getIfaceHandle(iface_name), &msg_internal);
-}
-
-wifi_error WifiLegacyHal::nanStatsRequest(const std::string& iface_name,
-                                          transaction_id id,
-                                          const NanStatsRequest& msg) {
-    NanStatsRequest msg_internal(msg);
-    return global_func_table_.wifi_nan_stats_request(
-        id, getIfaceHandle(iface_name), &msg_internal);
-}
-
-wifi_error WifiLegacyHal::nanConfigRequest(const std::string& iface_name,
-                                           transaction_id id,
-                                           const NanConfigRequest& msg) {
-    NanConfigRequest msg_internal(msg);
-    return global_func_table_.wifi_nan_config_request(
-        id, getIfaceHandle(iface_name), &msg_internal);
-}
-
-wifi_error WifiLegacyHal::nanTcaRequest(const std::string& iface_name,
-                                        transaction_id id,
-                                        const NanTCARequest& msg) {
-    NanTCARequest msg_internal(msg);
-    return global_func_table_.wifi_nan_tca_request(
-        id, getIfaceHandle(iface_name), &msg_internal);
-}
-
-wifi_error WifiLegacyHal::nanBeaconSdfPayloadRequest(
-    const std::string& iface_name, transaction_id id,
-    const NanBeaconSdfPayloadRequest& msg) {
-    NanBeaconSdfPayloadRequest msg_internal(msg);
-    return global_func_table_.wifi_nan_beacon_sdf_payload_request(
-        id, getIfaceHandle(iface_name), &msg_internal);
-}
-
-std::pair<wifi_error, NanVersion> WifiLegacyHal::nanGetVersion() {
-    NanVersion version;
-    wifi_error status =
-        global_func_table_.wifi_nan_get_version(global_handle_, &version);
-    return {status, version};
-}
-
-wifi_error WifiLegacyHal::nanGetCapabilities(const std::string& iface_name,
-                                             transaction_id id) {
-    return global_func_table_.wifi_nan_get_capabilities(
-        id, getIfaceHandle(iface_name));
-}
-
-wifi_error WifiLegacyHal::nanDataInterfaceCreate(
-    const std::string& iface_name, transaction_id id,
-    const std::string& data_iface_name) {
-    return global_func_table_.wifi_nan_data_interface_create(
-        id, getIfaceHandle(iface_name), makeCharVec(data_iface_name).data());
-}
-
-wifi_error WifiLegacyHal::nanDataInterfaceDelete(
-    const std::string& iface_name, transaction_id id,
-    const std::string& data_iface_name) {
-    return global_func_table_.wifi_nan_data_interface_delete(
-        id, getIfaceHandle(iface_name), makeCharVec(data_iface_name).data());
-}
-
-wifi_error WifiLegacyHal::nanDataRequestInitiator(
-    const std::string& iface_name, transaction_id id,
-    const NanDataPathInitiatorRequest& msg) {
-    NanDataPathInitiatorRequest msg_internal(msg);
-    return global_func_table_.wifi_nan_data_request_initiator(
-        id, getIfaceHandle(iface_name), &msg_internal);
-}
-
-wifi_error WifiLegacyHal::nanDataIndicationResponse(
-    const std::string& iface_name, transaction_id id,
-    const NanDataPathIndicationResponse& msg) {
-    NanDataPathIndicationResponse msg_internal(msg);
-    return global_func_table_.wifi_nan_data_indication_response(
-        id, getIfaceHandle(iface_name), &msg_internal);
-}
-
-typedef struct {
-    u8 num_ndp_instances;
-    NanDataPathId ndp_instance_id;
-} NanDataPathEndSingleNdpIdRequest;
-
-wifi_error WifiLegacyHal::nanDataEnd(const std::string& iface_name,
-                                     transaction_id id,
-                                     uint32_t ndpInstanceId) {
-    NanDataPathEndSingleNdpIdRequest msg;
-    msg.num_ndp_instances = 1;
-    msg.ndp_instance_id = ndpInstanceId;
-    wifi_error status = global_func_table_.wifi_nan_data_end(
-        id, getIfaceHandle(iface_name), (NanDataPathEndRequest*)&msg);
-    return status;
-}
-
-wifi_error WifiLegacyHal::setCountryCode(const std::string& iface_name,
-                                         std::array<int8_t, 2> code) {
-    std::string code_str(code.data(), code.data() + code.size());
-    return global_func_table_.wifi_set_country_code(getIfaceHandle(iface_name),
-                                                    code_str.c_str());
-}
-
-wifi_error WifiLegacyHal::retrieveIfaceHandles() {
-    wifi_interface_handle* iface_handles = nullptr;
-    int num_iface_handles = 0;
-    wifi_error status = global_func_table_.wifi_get_ifaces(
-        global_handle_, &num_iface_handles, &iface_handles);
-    if (status != WIFI_SUCCESS) {
-        LOG(ERROR) << "Failed to enumerate interface handles";
-        return status;
-    }
-    for (int i = 0; i < num_iface_handles; ++i) {
-        std::array<char, IFNAMSIZ> iface_name_arr = {};
-        status = global_func_table_.wifi_get_iface_name(
-            iface_handles[i], iface_name_arr.data(), iface_name_arr.size());
-        if (status != WIFI_SUCCESS) {
-            LOG(WARNING) << "Failed to get interface handle name";
-            continue;
-        }
-        // Assuming the interface name is null terminated since the legacy HAL
-        // API does not return a size.
-        std::string iface_name(iface_name_arr.data());
-        LOG(INFO) << "Adding interface handle for " << iface_name;
-        iface_name_to_handle_[iface_name] = iface_handles[i];
-    }
-    return WIFI_SUCCESS;
-}
-
-wifi_interface_handle WifiLegacyHal::getIfaceHandle(
-    const std::string& iface_name) {
-    const auto iface_handle_iter = iface_name_to_handle_.find(iface_name);
-    if (iface_handle_iter == iface_name_to_handle_.end()) {
-        LOG(ERROR) << "Unknown iface name: " << iface_name;
-        return nullptr;
-    }
-    return iface_handle_iter->second;
-}
-
-void WifiLegacyHal::runEventLoop() {
-    LOG(DEBUG) << "Starting legacy HAL event loop";
-    global_func_table_.wifi_event_loop(global_handle_);
-    const auto lock = hidl_sync_util::acquireGlobalLock();
-    if (!awaiting_event_loop_termination_) {
-        LOG(FATAL)
-            << "Legacy HAL event loop terminated, but HAL was not stopping";
-    }
-    LOG(DEBUG) << "Legacy HAL event loop terminated";
-    awaiting_event_loop_termination_ = false;
-    stop_wait_cv_.notify_one();
-}
-
-std::pair<wifi_error, std::vector<wifi_cached_scan_results>>
-WifiLegacyHal::getGscanCachedResults(const std::string& iface_name) {
-    std::vector<wifi_cached_scan_results> cached_scan_results;
-    cached_scan_results.resize(kMaxCachedGscanResults);
-    int32_t num_results = 0;
-    wifi_error status = global_func_table_.wifi_get_cached_gscan_results(
-        getIfaceHandle(iface_name), true /* always flush */,
-        cached_scan_results.size(), cached_scan_results.data(), &num_results);
-    CHECK(num_results >= 0 &&
-          static_cast<uint32_t>(num_results) <= kMaxCachedGscanResults);
-    cached_scan_results.resize(num_results);
-    // Check for invalid IE lengths in these cached scan results and correct it.
-    for (auto& cached_scan_result : cached_scan_results) {
-        int num_scan_results = cached_scan_result.num_results;
-        for (int i = 0; i < num_scan_results; i++) {
-            auto& scan_result = cached_scan_result.results[i];
-            if (scan_result.ie_length > 0) {
-                LOG(DEBUG) << "Cached scan result has non-zero IE length "
-                           << scan_result.ie_length;
-                scan_result.ie_length = 0;
-            }
-        }
-    }
-    return {status, std::move(cached_scan_results)};
-}
-
-void WifiLegacyHal::invalidate() {
-    global_handle_ = nullptr;
-    iface_name_to_handle_.clear();
-    on_driver_memory_dump_internal_callback = nullptr;
-    on_firmware_memory_dump_internal_callback = nullptr;
-    on_gscan_event_internal_callback = nullptr;
-    on_gscan_full_result_internal_callback = nullptr;
-    on_link_layer_stats_result_internal_callback = nullptr;
-    on_rssi_threshold_breached_internal_callback = nullptr;
-    on_ring_buffer_data_internal_callback = nullptr;
-    on_error_alert_internal_callback = nullptr;
-    on_radio_mode_change_internal_callback = nullptr;
-    on_rtt_results_internal_callback = nullptr;
-    on_nan_notify_response_user_callback = nullptr;
-    on_nan_event_publish_terminated_user_callback = nullptr;
-    on_nan_event_match_user_callback = nullptr;
-    on_nan_event_match_expired_user_callback = nullptr;
-    on_nan_event_subscribe_terminated_user_callback = nullptr;
-    on_nan_event_followup_user_callback = nullptr;
-    on_nan_event_disc_eng_event_user_callback = nullptr;
-    on_nan_event_disabled_user_callback = nullptr;
-    on_nan_event_tca_user_callback = nullptr;
-    on_nan_event_beacon_sdf_payload_user_callback = nullptr;
-    on_nan_event_data_path_request_user_callback = nullptr;
-    on_nan_event_data_path_confirm_user_callback = nullptr;
-    on_nan_event_data_path_end_user_callback = nullptr;
-    on_nan_event_transmit_follow_up_user_callback = nullptr;
-    on_nan_event_range_request_user_callback = nullptr;
-    on_nan_event_range_report_user_callback = nullptr;
-    on_nan_event_schedule_update_user_callback = nullptr;
-}
-
-}  // namespace legacy_hal
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.3/default/wifi_legacy_hal.h b/wifi/1.3/default/wifi_legacy_hal.h
deleted file mode 100644
index 9cfa172..0000000
--- a/wifi/1.3/default/wifi_legacy_hal.h
+++ /dev/null
@@ -1,404 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef WIFI_LEGACY_HAL_H_
-#define WIFI_LEGACY_HAL_H_
-
-#include <condition_variable>
-#include <functional>
-#include <map>
-#include <thread>
-#include <vector>
-
-#include <wifi_system/interface_tool.h>
-
-// HACK: The include inside the namespace below also transitively includes a
-// bunch of libc headers into the namespace, which leads to functions like
-// socketpair being defined in
-// android::hardware::wifi::V1_1::implementation::legacy_hal. Include this one
-// particular header as a hacky workaround until that's fixed.
-#include <sys/socket.h>
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-// This is in a separate namespace to prevent typename conflicts between
-// the legacy HAL types and the HIDL interface types.
-namespace legacy_hal {
-// Wrap all the types defined inside the legacy HAL header files inside this
-// namespace.
-#include <hardware_legacy/wifi_hal.h>
-
-// APF capabilities supported by the iface.
-struct PacketFilterCapabilities {
-    uint32_t version;
-    uint32_t max_len;
-};
-
-// WARNING: We don't care about the variable sized members of either
-// |wifi_iface_stat|, |wifi_radio_stat| structures. So, using the pragma
-// to escape the compiler warnings regarding this.
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-Wgnu-variable-sized-type-not-at-end"
-// The |wifi_radio_stat.tx_time_per_levels| stats is provided as a pointer in
-// |wifi_radio_stat| structure in the legacy HAL API. Separate that out
-// into a separate return element to avoid passing pointers around.
-struct LinkLayerRadioStats {
-    wifi_radio_stat stats;
-    std::vector<uint32_t> tx_time_per_levels;
-    std::vector<wifi_channel_stat> channel_stats;
-};
-
-struct LinkLayerStats {
-    wifi_iface_stat iface;
-    std::vector<LinkLayerRadioStats> radios;
-};
-#pragma GCC diagnostic pop
-
-// The |WLAN_DRIVER_WAKE_REASON_CNT.cmd_event_wake_cnt| and
-// |WLAN_DRIVER_WAKE_REASON_CNT.driver_fw_local_wake_cnt| stats is provided
-// as a pointer in |WLAN_DRIVER_WAKE_REASON_CNT| structure in the legacy HAL
-// API. Separate that out into a separate return elements to avoid passing
-// pointers around.
-struct WakeReasonStats {
-    WLAN_DRIVER_WAKE_REASON_CNT wake_reason_cnt;
-    std::vector<uint32_t> cmd_event_wake_cnt;
-    std::vector<uint32_t> driver_fw_local_wake_cnt;
-};
-
-// NAN response and event callbacks struct.
-struct NanCallbackHandlers {
-    // NotifyResponse invoked to notify the status of the Request.
-    std::function<void(transaction_id, const NanResponseMsg&)>
-        on_notify_response;
-    // Various event callbacks.
-    std::function<void(const NanPublishTerminatedInd&)>
-        on_event_publish_terminated;
-    std::function<void(const NanMatchInd&)> on_event_match;
-    std::function<void(const NanMatchExpiredInd&)> on_event_match_expired;
-    std::function<void(const NanSubscribeTerminatedInd&)>
-        on_event_subscribe_terminated;
-    std::function<void(const NanFollowupInd&)> on_event_followup;
-    std::function<void(const NanDiscEngEventInd&)> on_event_disc_eng_event;
-    std::function<void(const NanDisabledInd&)> on_event_disabled;
-    std::function<void(const NanTCAInd&)> on_event_tca;
-    std::function<void(const NanBeaconSdfPayloadInd&)>
-        on_event_beacon_sdf_payload;
-    std::function<void(const NanDataPathRequestInd&)>
-        on_event_data_path_request;
-    std::function<void(const NanDataPathConfirmInd&)>
-        on_event_data_path_confirm;
-    std::function<void(const NanDataPathEndInd&)> on_event_data_path_end;
-    std::function<void(const NanTransmitFollowupInd&)>
-        on_event_transmit_follow_up;
-    std::function<void(const NanRangeRequestInd&)> on_event_range_request;
-    std::function<void(const NanRangeReportInd&)> on_event_range_report;
-    std::function<void(const NanDataPathScheduleUpdateInd&)>
-        on_event_schedule_update;
-};
-
-// Full scan results contain IE info and are hence passed by reference, to
-// preserve the variable length array member |ie_data|. Callee must not retain
-// the pointer.
-using on_gscan_full_result_callback =
-    std::function<void(wifi_request_id, const wifi_scan_result*, uint32_t)>;
-// These scan results don't contain any IE info, so no need to pass by
-// reference.
-using on_gscan_results_callback = std::function<void(
-    wifi_request_id, const std::vector<wifi_cached_scan_results>&)>;
-
-// Invoked when the rssi value breaches the thresholds set.
-using on_rssi_threshold_breached_callback =
-    std::function<void(wifi_request_id, std::array<uint8_t, 6>, int8_t)>;
-
-// Callback for RTT range request results.
-// Rtt results contain IE info and are hence passed by reference, to
-// preserve the |LCI| and |LCR| pointers. Callee must not retain
-// the pointer.
-using on_rtt_results_callback = std::function<void(
-    wifi_request_id, const std::vector<const wifi_rtt_result*>&)>;
-
-// Callback for ring buffer data.
-using on_ring_buffer_data_callback =
-    std::function<void(const std::string&, const std::vector<uint8_t>&,
-                       const wifi_ring_buffer_status&)>;
-
-// Callback for alerts.
-using on_error_alert_callback =
-    std::function<void(int32_t, const std::vector<uint8_t>&)>;
-
-// Struct for the mac info from the legacy HAL. This is a cleaner version
-// of the |wifi_mac_info| & |wifi_iface_info|.
-typedef struct {
-    std::string name;
-    wifi_channel channel;
-} WifiIfaceInfo;
-
-typedef struct {
-    uint32_t wlan_mac_id;
-    /* BIT MASK of BIT(WLAN_MAC*) as represented by wlan_mac_band */
-    uint32_t mac_band;
-    /* Represents the connected Wi-Fi interfaces associated with each MAC */
-    std::vector<WifiIfaceInfo> iface_infos;
-} WifiMacInfo;
-
-// Callback for radio mode change
-using on_radio_mode_change_callback =
-    std::function<void(const std::vector<WifiMacInfo>&)>;
-
-/**
- * Class that encapsulates all legacy HAL interactions.
- * This class manages the lifetime of the event loop thread used by legacy HAL.
- *
- * Note: There will only be a single instance of this class created in the Wifi
- * object and will be valid for the lifetime of the process.
- */
-class WifiLegacyHal {
-   public:
-    WifiLegacyHal(const std::weak_ptr<wifi_system::InterfaceTool> iface_tool);
-    virtual ~WifiLegacyHal() = default;
-
-    // Initialize the legacy HAL function table.
-    virtual wifi_error initialize();
-    // Start the legacy HAL and the event looper thread.
-    virtual wifi_error start();
-    // Deinitialize the legacy HAL and wait for the event loop thread to exit
-    // using a predefined timeout.
-    virtual wifi_error stop(std::unique_lock<std::recursive_mutex>* lock,
-                            const std::function<void()>& on_complete_callback);
-    // Checks if legacy HAL has successfully started
-    bool isStarted();
-    // Wrappers for all the functions in the legacy HAL function table.
-    virtual std::pair<wifi_error, std::string> getDriverVersion(
-        const std::string& iface_name);
-    virtual std::pair<wifi_error, std::string> getFirmwareVersion(
-        const std::string& iface_name);
-    std::pair<wifi_error, std::vector<uint8_t>> requestDriverMemoryDump(
-        const std::string& iface_name);
-    std::pair<wifi_error, std::vector<uint8_t>> requestFirmwareMemoryDump(
-        const std::string& iface_name);
-    std::pair<wifi_error, uint32_t> getSupportedFeatureSet(
-        const std::string& iface_name);
-    // APF functions.
-    std::pair<wifi_error, PacketFilterCapabilities> getPacketFilterCapabilities(
-        const std::string& iface_name);
-    wifi_error setPacketFilter(const std::string& iface_name,
-                               const std::vector<uint8_t>& program);
-    std::pair<wifi_error, std::vector<uint8_t>> readApfPacketFilterData(
-        const std::string& iface_name);
-    // Gscan functions.
-    std::pair<wifi_error, wifi_gscan_capabilities> getGscanCapabilities(
-        const std::string& iface_name);
-    // These API's provides a simplified interface over the legacy Gscan API's:
-    // a) All scan events from the legacy HAL API other than the
-    //    |WIFI_SCAN_FAILED| are treated as notification of results.
-    //    This method then retrieves the cached scan results from the legacy
-    //    HAL API and triggers the externally provided
-    //    |on_results_user_callback| on success.
-    // b) |WIFI_SCAN_FAILED| scan event or failure to retrieve cached scan
-    // results
-    //    triggers the externally provided |on_failure_user_callback|.
-    // c) Full scan result event triggers the externally provided
-    //    |on_full_result_user_callback|.
-    wifi_error startGscan(
-        const std::string& iface_name, wifi_request_id id,
-        const wifi_scan_cmd_params& params,
-        const std::function<void(wifi_request_id)>& on_failure_callback,
-        const on_gscan_results_callback& on_results_callback,
-        const on_gscan_full_result_callback& on_full_result_callback);
-    wifi_error stopGscan(const std::string& iface_name, wifi_request_id id);
-    std::pair<wifi_error, std::vector<uint32_t>> getValidFrequenciesForBand(
-        const std::string& iface_name, wifi_band band);
-    virtual wifi_error setDfsFlag(const std::string& iface_name, bool dfs_on);
-    // Link layer stats functions.
-    wifi_error enableLinkLayerStats(const std::string& iface_name, bool debug);
-    wifi_error disableLinkLayerStats(const std::string& iface_name);
-    std::pair<wifi_error, LinkLayerStats> getLinkLayerStats(
-        const std::string& iface_name);
-    // RSSI monitor functions.
-    wifi_error startRssiMonitoring(const std::string& iface_name,
-                                   wifi_request_id id, int8_t max_rssi,
-                                   int8_t min_rssi,
-                                   const on_rssi_threshold_breached_callback&
-                                       on_threshold_breached_callback);
-    wifi_error stopRssiMonitoring(const std::string& iface_name,
-                                  wifi_request_id id);
-    std::pair<wifi_error, wifi_roaming_capabilities> getRoamingCapabilities(
-        const std::string& iface_name);
-    wifi_error configureRoaming(const std::string& iface_name,
-                                const wifi_roaming_config& config);
-    wifi_error enableFirmwareRoaming(const std::string& iface_name,
-                                     fw_roaming_state_t state);
-    wifi_error configureNdOffload(const std::string& iface_name, bool enable);
-    wifi_error startSendingOffloadedPacket(
-        const std::string& iface_name, uint32_t cmd_id, uint16_t ether_type,
-        const std::vector<uint8_t>& ip_packet_data,
-        const std::array<uint8_t, 6>& src_address,
-        const std::array<uint8_t, 6>& dst_address, uint32_t period_in_ms);
-    wifi_error stopSendingOffloadedPacket(const std::string& iface_name,
-                                          uint32_t cmd_id);
-    wifi_error setScanningMacOui(const std::string& iface_name,
-                                 const std::array<uint8_t, 3>& oui);
-    virtual wifi_error selectTxPowerScenario(const std::string& iface_name,
-                                             wifi_power_scenario scenario);
-    virtual wifi_error resetTxPowerScenario(const std::string& iface_name);
-    wifi_error setLatencyMode(const std::string& iface_name,
-                              wifi_latency_mode mode);
-    // Logger/debug functions.
-    std::pair<wifi_error, uint32_t> getLoggerSupportedFeatureSet(
-        const std::string& iface_name);
-    wifi_error startPktFateMonitoring(const std::string& iface_name);
-    std::pair<wifi_error, std::vector<wifi_tx_report>> getTxPktFates(
-        const std::string& iface_name);
-    std::pair<wifi_error, std::vector<wifi_rx_report>> getRxPktFates(
-        const std::string& iface_name);
-    std::pair<wifi_error, WakeReasonStats> getWakeReasonStats(
-        const std::string& iface_name);
-    wifi_error registerRingBufferCallbackHandler(
-        const std::string& iface_name,
-        const on_ring_buffer_data_callback& on_data_callback);
-    wifi_error deregisterRingBufferCallbackHandler(
-        const std::string& iface_name);
-    std::pair<wifi_error, std::vector<wifi_ring_buffer_status>>
-    getRingBuffersStatus(const std::string& iface_name);
-    wifi_error startRingBufferLogging(const std::string& iface_name,
-                                      const std::string& ring_name,
-                                      uint32_t verbose_level,
-                                      uint32_t max_interval_sec,
-                                      uint32_t min_data_size);
-    wifi_error getRingBufferData(const std::string& iface_name,
-                                 const std::string& ring_name);
-    wifi_error registerErrorAlertCallbackHandler(
-        const std::string& iface_name,
-        const on_error_alert_callback& on_alert_callback);
-    wifi_error deregisterErrorAlertCallbackHandler(
-        const std::string& iface_name);
-    // Radio mode functions.
-    virtual wifi_error registerRadioModeChangeCallbackHandler(
-        const std::string& iface_name,
-        const on_radio_mode_change_callback& on_user_change_callback);
-    // RTT functions.
-    wifi_error startRttRangeRequest(
-        const std::string& iface_name, wifi_request_id id,
-        const std::vector<wifi_rtt_config>& rtt_configs,
-        const on_rtt_results_callback& on_results_callback);
-    wifi_error cancelRttRangeRequest(
-        const std::string& iface_name, wifi_request_id id,
-        const std::vector<std::array<uint8_t, 6>>& mac_addrs);
-    std::pair<wifi_error, wifi_rtt_capabilities> getRttCapabilities(
-        const std::string& iface_name);
-    std::pair<wifi_error, wifi_rtt_responder> getRttResponderInfo(
-        const std::string& iface_name);
-    wifi_error enableRttResponder(const std::string& iface_name,
-                                  wifi_request_id id,
-                                  const wifi_channel_info& channel_hint,
-                                  uint32_t max_duration_secs,
-                                  const wifi_rtt_responder& info);
-    wifi_error disableRttResponder(const std::string& iface_name,
-                                   wifi_request_id id);
-    wifi_error setRttLci(const std::string& iface_name, wifi_request_id id,
-                         const wifi_lci_information& info);
-    wifi_error setRttLcr(const std::string& iface_name, wifi_request_id id,
-                         const wifi_lcr_information& info);
-    // NAN functions.
-    virtual wifi_error nanRegisterCallbackHandlers(
-        const std::string& iface_name, const NanCallbackHandlers& callbacks);
-    wifi_error nanEnableRequest(const std::string& iface_name,
-                                transaction_id id, const NanEnableRequest& msg);
-    virtual wifi_error nanDisableRequest(const std::string& iface_name,
-                                         transaction_id id);
-    wifi_error nanPublishRequest(const std::string& iface_name,
-                                 transaction_id id,
-                                 const NanPublishRequest& msg);
-    wifi_error nanPublishCancelRequest(const std::string& iface_name,
-                                       transaction_id id,
-                                       const NanPublishCancelRequest& msg);
-    wifi_error nanSubscribeRequest(const std::string& iface_name,
-                                   transaction_id id,
-                                   const NanSubscribeRequest& msg);
-    wifi_error nanSubscribeCancelRequest(const std::string& iface_name,
-                                         transaction_id id,
-                                         const NanSubscribeCancelRequest& msg);
-    wifi_error nanTransmitFollowupRequest(
-        const std::string& iface_name, transaction_id id,
-        const NanTransmitFollowupRequest& msg);
-    wifi_error nanStatsRequest(const std::string& iface_name, transaction_id id,
-                               const NanStatsRequest& msg);
-    wifi_error nanConfigRequest(const std::string& iface_name,
-                                transaction_id id, const NanConfigRequest& msg);
-    wifi_error nanTcaRequest(const std::string& iface_name, transaction_id id,
-                             const NanTCARequest& msg);
-    wifi_error nanBeaconSdfPayloadRequest(
-        const std::string& iface_name, transaction_id id,
-        const NanBeaconSdfPayloadRequest& msg);
-    std::pair<wifi_error, NanVersion> nanGetVersion();
-    wifi_error nanGetCapabilities(const std::string& iface_name,
-                                  transaction_id id);
-    wifi_error nanDataInterfaceCreate(const std::string& iface_name,
-                                      transaction_id id,
-                                      const std::string& data_iface_name);
-    virtual wifi_error nanDataInterfaceDelete(
-        const std::string& iface_name, transaction_id id,
-        const std::string& data_iface_name);
-    wifi_error nanDataRequestInitiator(const std::string& iface_name,
-                                       transaction_id id,
-                                       const NanDataPathInitiatorRequest& msg);
-    wifi_error nanDataIndicationResponse(
-        const std::string& iface_name, transaction_id id,
-        const NanDataPathIndicationResponse& msg);
-    wifi_error nanDataEnd(const std::string& iface_name, transaction_id id,
-                          uint32_t ndpInstanceId);
-    // AP functions.
-    wifi_error setCountryCode(const std::string& iface_name,
-                              std::array<int8_t, 2> code);
-
-   private:
-    // Retrieve interface handles for all the available interfaces.
-    wifi_error retrieveIfaceHandles();
-    wifi_interface_handle getIfaceHandle(const std::string& iface_name);
-    // Run the legacy HAL event loop thread.
-    void runEventLoop();
-    // Retrieve the cached gscan results to pass the results back to the
-    // external callbacks.
-    std::pair<wifi_error, std::vector<wifi_cached_scan_results>>
-    getGscanCachedResults(const std::string& iface_name);
-    void invalidate();
-
-    // Global function table of legacy HAL.
-    wifi_hal_fn global_func_table_;
-    // Opaque handle to be used for all global operations.
-    wifi_handle global_handle_;
-    // Map of interface name to handle that is to be used for all interface
-    // specific operations.
-    std::map<std::string, wifi_interface_handle> iface_name_to_handle_;
-    // Flag to indicate if we have initiated the cleanup of legacy HAL.
-    std::atomic<bool> awaiting_event_loop_termination_;
-    std::condition_variable_any stop_wait_cv_;
-    // Flag to indicate if the legacy HAL has been started.
-    bool is_started_;
-    std::weak_ptr<wifi_system::InterfaceTool> iface_tool_;
-};
-
-}  // namespace legacy_hal
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // WIFI_LEGACY_HAL_H_
diff --git a/wifi/1.3/default/wifi_legacy_hal_stubs.cpp b/wifi/1.3/default/wifi_legacy_hal_stubs.cpp
deleted file mode 100644
index dedd2d4..0000000
--- a/wifi/1.3/default/wifi_legacy_hal_stubs.cpp
+++ /dev/null
@@ -1,148 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "wifi_legacy_hal_stubs.h"
-
-// TODO: Remove these stubs from HalTool in libwifi-system.
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-namespace legacy_hal {
-template <typename>
-struct stubFunction;
-
-template <typename R, typename... Args>
-struct stubFunction<R (*)(Args...)> {
-    static constexpr R invoke(Args...) { return WIFI_ERROR_NOT_SUPPORTED; }
-};
-template <typename... Args>
-struct stubFunction<void (*)(Args...)> {
-    static constexpr void invoke(Args...) {}
-};
-
-template <typename T>
-void populateStubFor(T* val) {
-    *val = &stubFunction<T>::invoke;
-}
-
-bool initHalFuncTableWithStubs(wifi_hal_fn* hal_fn) {
-    if (hal_fn == nullptr) {
-        return false;
-    }
-    populateStubFor(&hal_fn->wifi_initialize);
-    populateStubFor(&hal_fn->wifi_wait_for_driver_ready);
-    populateStubFor(&hal_fn->wifi_cleanup);
-    populateStubFor(&hal_fn->wifi_event_loop);
-    populateStubFor(&hal_fn->wifi_get_error_info);
-    populateStubFor(&hal_fn->wifi_get_supported_feature_set);
-    populateStubFor(&hal_fn->wifi_get_concurrency_matrix);
-    populateStubFor(&hal_fn->wifi_set_scanning_mac_oui);
-    populateStubFor(&hal_fn->wifi_get_supported_channels);
-    populateStubFor(&hal_fn->wifi_is_epr_supported);
-    populateStubFor(&hal_fn->wifi_get_ifaces);
-    populateStubFor(&hal_fn->wifi_get_iface_name);
-    populateStubFor(&hal_fn->wifi_set_iface_event_handler);
-    populateStubFor(&hal_fn->wifi_reset_iface_event_handler);
-    populateStubFor(&hal_fn->wifi_start_gscan);
-    populateStubFor(&hal_fn->wifi_stop_gscan);
-    populateStubFor(&hal_fn->wifi_get_cached_gscan_results);
-    populateStubFor(&hal_fn->wifi_set_bssid_hotlist);
-    populateStubFor(&hal_fn->wifi_reset_bssid_hotlist);
-    populateStubFor(&hal_fn->wifi_set_significant_change_handler);
-    populateStubFor(&hal_fn->wifi_reset_significant_change_handler);
-    populateStubFor(&hal_fn->wifi_get_gscan_capabilities);
-    populateStubFor(&hal_fn->wifi_set_link_stats);
-    populateStubFor(&hal_fn->wifi_get_link_stats);
-    populateStubFor(&hal_fn->wifi_clear_link_stats);
-    populateStubFor(&hal_fn->wifi_get_valid_channels);
-    populateStubFor(&hal_fn->wifi_rtt_range_request);
-    populateStubFor(&hal_fn->wifi_rtt_range_cancel);
-    populateStubFor(&hal_fn->wifi_get_rtt_capabilities);
-    populateStubFor(&hal_fn->wifi_rtt_get_responder_info);
-    populateStubFor(&hal_fn->wifi_enable_responder);
-    populateStubFor(&hal_fn->wifi_disable_responder);
-    populateStubFor(&hal_fn->wifi_set_nodfs_flag);
-    populateStubFor(&hal_fn->wifi_start_logging);
-    populateStubFor(&hal_fn->wifi_set_epno_list);
-    populateStubFor(&hal_fn->wifi_reset_epno_list);
-    populateStubFor(&hal_fn->wifi_set_country_code);
-    populateStubFor(&hal_fn->wifi_get_firmware_memory_dump);
-    populateStubFor(&hal_fn->wifi_set_log_handler);
-    populateStubFor(&hal_fn->wifi_reset_log_handler);
-    populateStubFor(&hal_fn->wifi_set_alert_handler);
-    populateStubFor(&hal_fn->wifi_reset_alert_handler);
-    populateStubFor(&hal_fn->wifi_get_firmware_version);
-    populateStubFor(&hal_fn->wifi_get_ring_buffers_status);
-    populateStubFor(&hal_fn->wifi_get_logger_supported_feature_set);
-    populateStubFor(&hal_fn->wifi_get_ring_data);
-    populateStubFor(&hal_fn->wifi_enable_tdls);
-    populateStubFor(&hal_fn->wifi_disable_tdls);
-    populateStubFor(&hal_fn->wifi_get_tdls_status);
-    populateStubFor(&hal_fn->wifi_get_tdls_capabilities);
-    populateStubFor(&hal_fn->wifi_get_driver_version);
-    populateStubFor(&hal_fn->wifi_set_passpoint_list);
-    populateStubFor(&hal_fn->wifi_reset_passpoint_list);
-    populateStubFor(&hal_fn->wifi_set_lci);
-    populateStubFor(&hal_fn->wifi_set_lcr);
-    populateStubFor(&hal_fn->wifi_start_sending_offloaded_packet);
-    populateStubFor(&hal_fn->wifi_stop_sending_offloaded_packet);
-    populateStubFor(&hal_fn->wifi_start_rssi_monitoring);
-    populateStubFor(&hal_fn->wifi_stop_rssi_monitoring);
-    populateStubFor(&hal_fn->wifi_get_wake_reason_stats);
-    populateStubFor(&hal_fn->wifi_configure_nd_offload);
-    populateStubFor(&hal_fn->wifi_get_driver_memory_dump);
-    populateStubFor(&hal_fn->wifi_start_pkt_fate_monitoring);
-    populateStubFor(&hal_fn->wifi_get_tx_pkt_fates);
-    populateStubFor(&hal_fn->wifi_get_rx_pkt_fates);
-    populateStubFor(&hal_fn->wifi_nan_enable_request);
-    populateStubFor(&hal_fn->wifi_nan_disable_request);
-    populateStubFor(&hal_fn->wifi_nan_publish_request);
-    populateStubFor(&hal_fn->wifi_nan_publish_cancel_request);
-    populateStubFor(&hal_fn->wifi_nan_subscribe_request);
-    populateStubFor(&hal_fn->wifi_nan_subscribe_cancel_request);
-    populateStubFor(&hal_fn->wifi_nan_transmit_followup_request);
-    populateStubFor(&hal_fn->wifi_nan_stats_request);
-    populateStubFor(&hal_fn->wifi_nan_config_request);
-    populateStubFor(&hal_fn->wifi_nan_tca_request);
-    populateStubFor(&hal_fn->wifi_nan_beacon_sdf_payload_request);
-    populateStubFor(&hal_fn->wifi_nan_register_handler);
-    populateStubFor(&hal_fn->wifi_nan_get_version);
-    populateStubFor(&hal_fn->wifi_nan_get_capabilities);
-    populateStubFor(&hal_fn->wifi_nan_data_interface_create);
-    populateStubFor(&hal_fn->wifi_nan_data_interface_delete);
-    populateStubFor(&hal_fn->wifi_nan_data_request_initiator);
-    populateStubFor(&hal_fn->wifi_nan_data_indication_response);
-    populateStubFor(&hal_fn->wifi_nan_data_end);
-    populateStubFor(&hal_fn->wifi_get_packet_filter_capabilities);
-    populateStubFor(&hal_fn->wifi_set_packet_filter);
-    populateStubFor(&hal_fn->wifi_read_packet_filter);
-    populateStubFor(&hal_fn->wifi_get_roaming_capabilities);
-    populateStubFor(&hal_fn->wifi_enable_firmware_roaming);
-    populateStubFor(&hal_fn->wifi_configure_roaming);
-    populateStubFor(&hal_fn->wifi_select_tx_power_scenario);
-    populateStubFor(&hal_fn->wifi_reset_tx_power_scenario);
-    populateStubFor(&hal_fn->wifi_set_radio_mode_change_handler);
-    populateStubFor(&hal_fn->wifi_set_latency_mode);
-    return true;
-}
-}  // namespace legacy_hal
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.3/default/wifi_legacy_hal_stubs.h b/wifi/1.3/default/wifi_legacy_hal_stubs.h
deleted file mode 100644
index 64854e0..0000000
--- a/wifi/1.3/default/wifi_legacy_hal_stubs.h
+++ /dev/null
@@ -1,36 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef WIFI_LEGACY_HAL_STUBS_H_
-#define WIFI_LEGACY_HAL_STUBS_H_
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-namespace legacy_hal {
-#include <hardware_legacy/wifi_hal.h>
-
-bool initHalFuncTableWithStubs(wifi_hal_fn* hal_fn);
-}  // namespace legacy_hal
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // WIFI_LEGACY_HAL_STUBS_H_
diff --git a/wifi/1.3/default/wifi_mode_controller.cpp b/wifi/1.3/default/wifi_mode_controller.cpp
deleted file mode 100644
index c392486..0000000
--- a/wifi/1.3/default/wifi_mode_controller.cpp
+++ /dev/null
@@ -1,91 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-#include <android-base/macros.h>
-#include <private/android_filesystem_config.h>
-
-#include "wifi_mode_controller.h"
-
-using android::hardware::wifi::V1_0::IfaceType;
-using android::wifi_hal::DriverTool;
-
-namespace {
-int convertIfaceTypeToFirmwareMode(IfaceType type) {
-    int mode;
-    switch (type) {
-        case IfaceType::AP:
-            mode = DriverTool::kFirmwareModeAp;
-            break;
-        case IfaceType::P2P:
-            mode = DriverTool::kFirmwareModeP2p;
-            break;
-        case IfaceType::NAN:
-            // NAN is exposed in STA mode currently.
-            mode = DriverTool::kFirmwareModeSta;
-            break;
-        case IfaceType::STA:
-            mode = DriverTool::kFirmwareModeSta;
-            break;
-    }
-    return mode;
-}
-}  // namespace
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-namespace mode_controller {
-
-WifiModeController::WifiModeController() : driver_tool_(new DriverTool) {}
-
-bool WifiModeController::isFirmwareModeChangeNeeded(IfaceType type) {
-    return driver_tool_->IsFirmwareModeChangeNeeded(
-        convertIfaceTypeToFirmwareMode(type));
-}
-
-bool WifiModeController::initialize() {
-    if (!driver_tool_->LoadDriver()) {
-        LOG(ERROR) << "Failed to load WiFi driver";
-        return false;
-    }
-    return true;
-}
-
-bool WifiModeController::changeFirmwareMode(IfaceType type) {
-    if (!driver_tool_->ChangeFirmwareMode(
-            convertIfaceTypeToFirmwareMode(type))) {
-        LOG(ERROR) << "Failed to change firmware mode";
-        return false;
-    }
-    return true;
-}
-
-bool WifiModeController::deinitialize() {
-    if (!driver_tool_->UnloadDriver()) {
-        LOG(ERROR) << "Failed to unload WiFi driver";
-        return false;
-    }
-    return true;
-}
-}  // namespace mode_controller
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.3/default/wifi_mode_controller.h b/wifi/1.3/default/wifi_mode_controller.h
deleted file mode 100644
index ace5a52..0000000
--- a/wifi/1.3/default/wifi_mode_controller.h
+++ /dev/null
@@ -1,63 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef WIFI_MODE_CONTROLLER_H_
-#define WIFI_MODE_CONTROLLER_H_
-
-#include <wifi_hal/driver_tool.h>
-
-#include <android/hardware/wifi/1.0/IWifi.h>
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-namespace mode_controller {
-using namespace android::hardware::wifi::V1_0;
-
-/**
- * Class that encapsulates all firmware mode configuration.
- * This class will perform the necessary firmware reloads to put the chip in the
- * required state (essentially a wrapper over DriverTool).
- */
-class WifiModeController {
-   public:
-    WifiModeController();
-    virtual ~WifiModeController() = default;
-
-    // Checks if a firmware mode change is necessary to support the specified
-    // iface type operations.
-    virtual bool isFirmwareModeChangeNeeded(IfaceType type);
-    virtual bool initialize();
-    // Change the firmware mode to support the specified iface type operations.
-    virtual bool changeFirmwareMode(IfaceType type);
-    // Unload the driver. This should be invoked whenever |IWifi.stop()| is
-    // invoked.
-    virtual bool deinitialize();
-
-   private:
-    std::unique_ptr<wifi_hal::DriverTool> driver_tool_;
-};
-
-}  // namespace mode_controller
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // WIFI_MODE_CONTROLLER_H_
diff --git a/wifi/1.3/default/wifi_nan_iface.cpp b/wifi/1.3/default/wifi_nan_iface.cpp
deleted file mode 100644
index ff9f422..0000000
--- a/wifi/1.3/default/wifi_nan_iface.cpp
+++ /dev/null
@@ -1,887 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-
-#include "hidl_return_util.h"
-#include "hidl_struct_util.h"
-#include "wifi_nan_iface.h"
-#include "wifi_status_util.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-using hidl_return_util::validateAndCall;
-
-WifiNanIface::WifiNanIface(
-    const std::string& ifname,
-    const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
-    const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util)
-    : ifname_(ifname),
-      legacy_hal_(legacy_hal),
-      iface_util_(iface_util),
-      is_valid_(true) {
-    // Register all the callbacks here. these should be valid for the lifetime
-    // of the object. Whenever the mode changes legacy HAL will remove
-    // all of these callbacks.
-    legacy_hal::NanCallbackHandlers callback_handlers;
-    android::wp<WifiNanIface> weak_ptr_this(this);
-
-    // Callback for response.
-    callback_handlers
-        .on_notify_response = [weak_ptr_this](
-                                  legacy_hal::transaction_id id,
-                                  const legacy_hal::NanResponseMsg& msg) {
-        const auto shared_ptr_this = weak_ptr_this.promote();
-        if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-            LOG(ERROR) << "Callback invoked on an invalid object";
-            return;
-        }
-        WifiNanStatus wifiNanStatus;
-        if (!hidl_struct_util::convertLegacyNanResponseHeaderToHidl(
-                msg, &wifiNanStatus)) {
-            LOG(ERROR) << "Failed to convert nan response header";
-            return;
-        }
-
-        switch (msg.response_type) {
-            case legacy_hal::NAN_RESPONSE_ENABLED: {
-                for (const auto& callback :
-                     shared_ptr_this->getEventCallbacks()) {
-                    if (!callback->notifyEnableResponse(id, wifiNanStatus)
-                             .isOk()) {
-                        LOG(ERROR) << "Failed to invoke the callback";
-                    }
-                }
-                break;
-            }
-            case legacy_hal::NAN_RESPONSE_DISABLED: {
-                for (const auto& callback :
-                     shared_ptr_this->getEventCallbacks()) {
-                    if (!callback->notifyDisableResponse(id, wifiNanStatus)
-                             .isOk()) {
-                        LOG(ERROR) << "Failed to invoke the callback";
-                    }
-                }
-                break;
-            }
-            case legacy_hal::NAN_RESPONSE_PUBLISH: {
-                for (const auto& callback :
-                     shared_ptr_this->getEventCallbacks()) {
-                    if (!callback
-                             ->notifyStartPublishResponse(
-                                 id, wifiNanStatus,
-                                 msg.body.publish_response.publish_id)
-                             .isOk()) {
-                        LOG(ERROR) << "Failed to invoke the callback";
-                    }
-                }
-                break;
-            }
-            case legacy_hal::NAN_RESPONSE_PUBLISH_CANCEL: {
-                for (const auto& callback :
-                     shared_ptr_this->getEventCallbacks()) {
-                    if (!callback->notifyStopPublishResponse(id, wifiNanStatus)
-                             .isOk()) {
-                        LOG(ERROR) << "Failed to invoke the callback";
-                    }
-                }
-                break;
-            }
-            case legacy_hal::NAN_RESPONSE_TRANSMIT_FOLLOWUP: {
-                for (const auto& callback :
-                     shared_ptr_this->getEventCallbacks()) {
-                    if (!callback
-                             ->notifyTransmitFollowupResponse(id, wifiNanStatus)
-                             .isOk()) {
-                        LOG(ERROR) << "Failed to invoke the callback";
-                    }
-                }
-                break;
-            }
-            case legacy_hal::NAN_RESPONSE_SUBSCRIBE: {
-                for (const auto& callback :
-                     shared_ptr_this->getEventCallbacks()) {
-                    if (!callback
-                             ->notifyStartSubscribeResponse(
-                                 id, wifiNanStatus,
-                                 msg.body.subscribe_response.subscribe_id)
-                             .isOk()) {
-                        LOG(ERROR) << "Failed to invoke the callback";
-                    }
-                }
-                break;
-            }
-            case legacy_hal::NAN_RESPONSE_SUBSCRIBE_CANCEL: {
-                for (const auto& callback :
-                     shared_ptr_this->getEventCallbacks()) {
-                    if (!callback
-                             ->notifyStopSubscribeResponse(id, wifiNanStatus)
-                             .isOk()) {
-                        LOG(ERROR) << "Failed to invoke the callback";
-                    }
-                }
-                break;
-            }
-            case legacy_hal::NAN_RESPONSE_CONFIG: {
-                for (const auto& callback :
-                     shared_ptr_this->getEventCallbacks()) {
-                    if (!callback->notifyConfigResponse(id, wifiNanStatus)
-                             .isOk()) {
-                        LOG(ERROR) << "Failed to invoke the callback";
-                    }
-                }
-                break;
-            }
-            case legacy_hal::NAN_GET_CAPABILITIES: {
-                NanCapabilities hidl_struct;
-                if (!hidl_struct_util::
-                        convertLegacyNanCapabilitiesResponseToHidl(
-                            msg.body.nan_capabilities, &hidl_struct)) {
-                    LOG(ERROR) << "Failed to convert nan capabilities response";
-                    return;
-                }
-                for (const auto& callback :
-                     shared_ptr_this->getEventCallbacks()) {
-                    if (!callback
-                             ->notifyCapabilitiesResponse(id, wifiNanStatus,
-                                                          hidl_struct)
-                             .isOk()) {
-                        LOG(ERROR) << "Failed to invoke the callback";
-                    }
-                }
-                break;
-            }
-            case legacy_hal::NAN_DP_INTERFACE_CREATE: {
-                for (const auto& callback :
-                     shared_ptr_this->getEventCallbacks()) {
-                    if (!callback
-                             ->notifyCreateDataInterfaceResponse(id,
-                                                                 wifiNanStatus)
-                             .isOk()) {
-                        LOG(ERROR) << "Failed to invoke the callback";
-                    }
-                }
-                break;
-            }
-            case legacy_hal::NAN_DP_INTERFACE_DELETE: {
-                for (const auto& callback :
-                     shared_ptr_this->getEventCallbacks()) {
-                    if (!callback
-                             ->notifyDeleteDataInterfaceResponse(id,
-                                                                 wifiNanStatus)
-                             .isOk()) {
-                        LOG(ERROR) << "Failed to invoke the callback";
-                    }
-                }
-                break;
-            }
-            case legacy_hal::NAN_DP_INITIATOR_RESPONSE: {
-                for (const auto& callback :
-                     shared_ptr_this->getEventCallbacks()) {
-                    if (!callback
-                             ->notifyInitiateDataPathResponse(
-                                 id, wifiNanStatus,
-                                 msg.body.data_request_response.ndp_instance_id)
-                             .isOk()) {
-                        LOG(ERROR) << "Failed to invoke the callback";
-                    }
-                }
-                break;
-            }
-            case legacy_hal::NAN_DP_RESPONDER_RESPONSE: {
-                for (const auto& callback :
-                     shared_ptr_this->getEventCallbacks()) {
-                    if (!callback
-                             ->notifyRespondToDataPathIndicationResponse(
-                                 id, wifiNanStatus)
-                             .isOk()) {
-                        LOG(ERROR) << "Failed to invoke the callback";
-                    }
-                }
-                break;
-            }
-            case legacy_hal::NAN_DP_END: {
-                for (const auto& callback :
-                     shared_ptr_this->getEventCallbacks()) {
-                    if (!callback
-                             ->notifyTerminateDataPathResponse(id,
-                                                               wifiNanStatus)
-                             .isOk()) {
-                        LOG(ERROR) << "Failed to invoke the callback";
-                    }
-                }
-                break;
-            }
-            case legacy_hal::NAN_RESPONSE_BEACON_SDF_PAYLOAD:
-            /* fall through */
-            case legacy_hal::NAN_RESPONSE_TCA:
-            /* fall through */
-            case legacy_hal::NAN_RESPONSE_STATS:
-            /* fall through */
-            case legacy_hal::NAN_RESPONSE_ERROR:
-            /* fall through */
-            default:
-                LOG(ERROR) << "Unknown or unhandled response type: "
-                           << msg.response_type;
-                return;
-        }
-    };
-
-    callback_handlers.on_event_disc_eng_event =
-        [weak_ptr_this](const legacy_hal::NanDiscEngEventInd& msg) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            NanClusterEventInd hidl_struct;
-            // event types defined identically - hence can be cast
-            hidl_struct.eventType = (NanClusterEventType)msg.event_type;
-            hidl_struct.addr = msg.data.mac_addr.addr;
-
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                if (!callback->eventClusterEvent(hidl_struct).isOk()) {
-                    LOG(ERROR) << "Failed to invoke the callback";
-                }
-            }
-        };
-
-    callback_handlers.on_event_disabled =
-        [weak_ptr_this](const legacy_hal::NanDisabledInd& msg) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            WifiNanStatus status;
-            hidl_struct_util::convertToWifiNanStatus(
-                msg.reason, msg.nan_reason, sizeof(msg.nan_reason), &status);
-
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                if (!callback->eventDisabled(status).isOk()) {
-                    LOG(ERROR) << "Failed to invoke the callback";
-                }
-            }
-        };
-
-    callback_handlers.on_event_publish_terminated =
-        [weak_ptr_this](const legacy_hal::NanPublishTerminatedInd& msg) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            WifiNanStatus status;
-            hidl_struct_util::convertToWifiNanStatus(
-                msg.reason, msg.nan_reason, sizeof(msg.nan_reason), &status);
-
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                if (!callback->eventPublishTerminated(msg.publish_id, status)
-                         .isOk()) {
-                    LOG(ERROR) << "Failed to invoke the callback";
-                }
-            }
-        };
-
-    callback_handlers.on_event_subscribe_terminated =
-        [weak_ptr_this](const legacy_hal::NanSubscribeTerminatedInd& msg) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            WifiNanStatus status;
-            hidl_struct_util::convertToWifiNanStatus(
-                msg.reason, msg.nan_reason, sizeof(msg.nan_reason), &status);
-
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                if (!callback
-                         ->eventSubscribeTerminated(msg.subscribe_id, status)
-                         .isOk()) {
-                    LOG(ERROR) << "Failed to invoke the callback";
-                }
-            }
-        };
-
-    callback_handlers.on_event_match =
-        [weak_ptr_this](const legacy_hal::NanMatchInd& msg) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            NanMatchInd hidl_struct;
-            if (!hidl_struct_util::convertLegacyNanMatchIndToHidl(
-                    msg, &hidl_struct)) {
-                LOG(ERROR) << "Failed to convert nan capabilities response";
-                return;
-            }
-
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                if (!callback->eventMatch(hidl_struct).isOk()) {
-                    LOG(ERROR) << "Failed to invoke the callback";
-                }
-            }
-        };
-
-    callback_handlers.on_event_match_expired =
-        [weak_ptr_this](const legacy_hal::NanMatchExpiredInd& msg) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                if (!callback
-                         ->eventMatchExpired(msg.publish_subscribe_id,
-                                             msg.requestor_instance_id)
-                         .isOk()) {
-                    LOG(ERROR) << "Failed to invoke the callback";
-                }
-            }
-        };
-
-    callback_handlers.on_event_followup =
-        [weak_ptr_this](const legacy_hal::NanFollowupInd& msg) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            NanFollowupReceivedInd hidl_struct;
-            if (!hidl_struct_util::convertLegacyNanFollowupIndToHidl(
-                    msg, &hidl_struct)) {
-                LOG(ERROR) << "Failed to convert nan capabilities response";
-                return;
-            }
-
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                if (!callback->eventFollowupReceived(hidl_struct).isOk()) {
-                    LOG(ERROR) << "Failed to invoke the callback";
-                }
-            }
-        };
-
-    callback_handlers.on_event_transmit_follow_up =
-        [weak_ptr_this](const legacy_hal::NanTransmitFollowupInd& msg) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            WifiNanStatus status;
-            hidl_struct_util::convertToWifiNanStatus(
-                msg.reason, msg.nan_reason, sizeof(msg.nan_reason), &status);
-
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                if (!callback->eventTransmitFollowup(msg.id, status).isOk()) {
-                    LOG(ERROR) << "Failed to invoke the callback";
-                }
-            }
-        };
-
-    callback_handlers.on_event_data_path_request =
-        [weak_ptr_this](const legacy_hal::NanDataPathRequestInd& msg) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            NanDataPathRequestInd hidl_struct;
-            if (!hidl_struct_util::convertLegacyNanDataPathRequestIndToHidl(
-                    msg, &hidl_struct)) {
-                LOG(ERROR) << "Failed to convert nan capabilities response";
-                return;
-            }
-
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                if (!callback->eventDataPathRequest(hidl_struct).isOk()) {
-                    LOG(ERROR) << "Failed to invoke the callback";
-                }
-            }
-        };
-
-    callback_handlers.on_event_data_path_confirm =
-        [weak_ptr_this](const legacy_hal::NanDataPathConfirmInd& msg) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            V1_2::NanDataPathConfirmInd hidl_struct;
-            if (!hidl_struct_util::convertLegacyNanDataPathConfirmIndToHidl(
-                    msg, &hidl_struct)) {
-                LOG(ERROR) << "Failed to convert nan capabilities response";
-                return;
-            }
-
-            for (const auto& callback :
-                 shared_ptr_this->getEventCallbacks_1_2()) {
-                if (!callback->eventDataPathConfirm_1_2(hidl_struct).isOk()) {
-                    LOG(ERROR) << "Failed to invoke the callback";
-                }
-            }
-        };
-
-    callback_handlers.on_event_data_path_end =
-        [weak_ptr_this](const legacy_hal::NanDataPathEndInd& msg) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                for (int i = 0; i < msg.num_ndp_instances; ++i) {
-                    if (!callback
-                             ->eventDataPathTerminated(msg.ndp_instance_id[i])
-                             .isOk()) {
-                        LOG(ERROR) << "Failed to invoke the callback";
-                    }
-                }
-            }
-        };
-
-    callback_handlers.on_event_beacon_sdf_payload =
-        [weak_ptr_this](const legacy_hal::NanBeaconSdfPayloadInd& /* msg */) {
-            LOG(ERROR) << "on_event_beacon_sdf_payload - should not be called";
-        };
-
-    callback_handlers.on_event_range_request =
-        [weak_ptr_this](const legacy_hal::NanRangeRequestInd& /* msg */) {
-            LOG(ERROR) << "on_event_range_request - should not be called";
-        };
-
-    callback_handlers.on_event_range_report =
-        [weak_ptr_this](const legacy_hal::NanRangeReportInd& /* msg */) {
-            LOG(ERROR) << "on_event_range_report - should not be called";
-        };
-
-    callback_handlers
-        .on_event_schedule_update = [weak_ptr_this](
-                                        const legacy_hal::
-                                            NanDataPathScheduleUpdateInd& msg) {
-        const auto shared_ptr_this = weak_ptr_this.promote();
-        if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-            LOG(ERROR) << "Callback invoked on an invalid object";
-            return;
-        }
-        V1_2::NanDataPathScheduleUpdateInd hidl_struct;
-        if (!hidl_struct_util::convertLegacyNanDataPathScheduleUpdateIndToHidl(
-                msg, &hidl_struct)) {
-            LOG(ERROR) << "Failed to convert nan capabilities response";
-            return;
-        }
-
-        for (const auto& callback : shared_ptr_this->getEventCallbacks_1_2()) {
-            if (!callback->eventDataPathScheduleUpdate(hidl_struct).isOk()) {
-                LOG(ERROR) << "Failed to invoke the callback";
-            }
-        }
-    };
-
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->nanRegisterCallbackHandlers(ifname_,
-                                                        callback_handlers);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        LOG(ERROR) << "Failed to register nan callbacks. Invalidating object";
-        invalidate();
-    }
-
-    // Register for iface state toggle events.
-    iface_util::IfaceEventHandlers event_handlers = {};
-    event_handlers.on_state_toggle_off_on =
-        [weak_ptr_this](const std::string& /* iface_name */) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            // Tell framework that NAN has been disabled.
-            WifiNanStatus status = {
-                NanStatusType::UNSUPPORTED_CONCURRENCY_NAN_DISABLED, ""};
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                if (!callback->eventDisabled(status).isOk()) {
-                    LOG(ERROR) << "Failed to invoke the callback";
-                }
-            }
-        };
-    iface_util_.lock()->registerIfaceEventHandlers(ifname_, event_handlers);
-}
-
-void WifiNanIface::invalidate() {
-    // send commands to HAL to actually disable and destroy interfaces
-    legacy_hal_.lock()->nanDisableRequest(ifname_, 0xFFFF);
-    legacy_hal_.lock()->nanDataInterfaceDelete(ifname_, 0xFFFE, "aware_data0");
-    legacy_hal_.lock()->nanDataInterfaceDelete(ifname_, 0xFFFD, "aware_data1");
-    iface_util_.lock()->unregisterIfaceEventHandlers(ifname_);
-    legacy_hal_.reset();
-    event_cb_handler_.invalidate();
-    event_cb_handler_1_2_.invalidate();
-    is_valid_ = false;
-}
-
-bool WifiNanIface::isValid() { return is_valid_; }
-
-std::string WifiNanIface::getName() { return ifname_; }
-
-std::set<sp<V1_0::IWifiNanIfaceEventCallback>>
-WifiNanIface::getEventCallbacks() {
-    return event_cb_handler_.getCallbacks();
-}
-
-std::set<sp<V1_2::IWifiNanIfaceEventCallback>>
-WifiNanIface::getEventCallbacks_1_2() {
-    return event_cb_handler_1_2_.getCallbacks();
-}
-
-Return<void> WifiNanIface::getName(getName_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::getNameInternal, hidl_status_cb);
-}
-
-Return<void> WifiNanIface::getType(getType_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::getTypeInternal, hidl_status_cb);
-}
-
-Return<void> WifiNanIface::registerEventCallback(
-    const sp<V1_0::IWifiNanIfaceEventCallback>& callback,
-    registerEventCallback_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::registerEventCallbackInternal,
-                           hidl_status_cb, callback);
-}
-
-Return<void> WifiNanIface::getCapabilitiesRequest(
-    uint16_t cmd_id, getCapabilitiesRequest_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::getCapabilitiesRequestInternal,
-                           hidl_status_cb, cmd_id);
-}
-
-Return<void> WifiNanIface::enableRequest(uint16_t cmd_id,
-                                         const NanEnableRequest& msg,
-                                         enableRequest_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::enableRequestInternal, hidl_status_cb,
-                           cmd_id, msg);
-}
-
-Return<void> WifiNanIface::configRequest(uint16_t cmd_id,
-                                         const NanConfigRequest& msg,
-                                         configRequest_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::configRequestInternal, hidl_status_cb,
-                           cmd_id, msg);
-}
-
-Return<void> WifiNanIface::disableRequest(uint16_t cmd_id,
-                                          disableRequest_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::disableRequestInternal,
-                           hidl_status_cb, cmd_id);
-}
-
-Return<void> WifiNanIface::startPublishRequest(
-    uint16_t cmd_id, const NanPublishRequest& msg,
-    startPublishRequest_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::startPublishRequestInternal,
-                           hidl_status_cb, cmd_id, msg);
-}
-
-Return<void> WifiNanIface::stopPublishRequest(
-    uint16_t cmd_id, uint8_t sessionId, stopPublishRequest_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::stopPublishRequestInternal,
-                           hidl_status_cb, cmd_id, sessionId);
-}
-
-Return<void> WifiNanIface::startSubscribeRequest(
-    uint16_t cmd_id, const NanSubscribeRequest& msg,
-    startSubscribeRequest_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::startSubscribeRequestInternal,
-                           hidl_status_cb, cmd_id, msg);
-}
-
-Return<void> WifiNanIface::stopSubscribeRequest(
-    uint16_t cmd_id, uint8_t sessionId,
-    stopSubscribeRequest_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::stopSubscribeRequestInternal,
-                           hidl_status_cb, cmd_id, sessionId);
-}
-
-Return<void> WifiNanIface::transmitFollowupRequest(
-    uint16_t cmd_id, const NanTransmitFollowupRequest& msg,
-    transmitFollowupRequest_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::transmitFollowupRequestInternal,
-                           hidl_status_cb, cmd_id, msg);
-}
-
-Return<void> WifiNanIface::createDataInterfaceRequest(
-    uint16_t cmd_id, const hidl_string& iface_name,
-    createDataInterfaceRequest_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::createDataInterfaceRequestInternal,
-                           hidl_status_cb, cmd_id, iface_name);
-}
-
-Return<void> WifiNanIface::deleteDataInterfaceRequest(
-    uint16_t cmd_id, const hidl_string& iface_name,
-    deleteDataInterfaceRequest_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::deleteDataInterfaceRequestInternal,
-                           hidl_status_cb, cmd_id, iface_name);
-}
-
-Return<void> WifiNanIface::initiateDataPathRequest(
-    uint16_t cmd_id, const NanInitiateDataPathRequest& msg,
-    initiateDataPathRequest_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::initiateDataPathRequestInternal,
-                           hidl_status_cb, cmd_id, msg);
-}
-
-Return<void> WifiNanIface::respondToDataPathIndicationRequest(
-    uint16_t cmd_id, const NanRespondToDataPathIndicationRequest& msg,
-    respondToDataPathIndicationRequest_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-        &WifiNanIface::respondToDataPathIndicationRequestInternal,
-        hidl_status_cb, cmd_id, msg);
-}
-
-Return<void> WifiNanIface::terminateDataPathRequest(
-    uint16_t cmd_id, uint32_t ndpInstanceId,
-    terminateDataPathRequest_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::terminateDataPathRequestInternal,
-                           hidl_status_cb, cmd_id, ndpInstanceId);
-}
-
-Return<void> WifiNanIface::registerEventCallback_1_2(
-    const sp<V1_2::IWifiNanIfaceEventCallback>& callback,
-    registerEventCallback_1_2_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::registerEventCallback_1_2Internal,
-                           hidl_status_cb, callback);
-}
-
-Return<void> WifiNanIface::enableRequest_1_2(
-    uint16_t cmd_id, const NanEnableRequest& msg1,
-    const V1_2::NanConfigRequestSupplemental& msg2,
-    enableRequest_1_2_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::enableRequest_1_2Internal,
-                           hidl_status_cb, cmd_id, msg1, msg2);
-}
-
-Return<void> WifiNanIface::configRequest_1_2(
-    uint16_t cmd_id, const NanConfigRequest& msg1,
-    const V1_2::NanConfigRequestSupplemental& msg2,
-    configRequest_1_2_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiNanIface::configRequest_1_2Internal,
-                           hidl_status_cb, cmd_id, msg1, msg2);
-}
-
-std::pair<WifiStatus, std::string> WifiNanIface::getNameInternal() {
-    return {createWifiStatus(WifiStatusCode::SUCCESS), ifname_};
-}
-
-std::pair<WifiStatus, IfaceType> WifiNanIface::getTypeInternal() {
-    return {createWifiStatus(WifiStatusCode::SUCCESS), IfaceType::NAN};
-}
-
-WifiStatus WifiNanIface::registerEventCallbackInternal(
-    const sp<V1_0::IWifiNanIfaceEventCallback>& callback) {
-    if (!event_cb_handler_.addCallback(callback)) {
-        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-    }
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-WifiStatus WifiNanIface::getCapabilitiesRequestInternal(uint16_t cmd_id) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->nanGetCapabilities(ifname_, cmd_id);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiNanIface::enableRequestInternal(
-    uint16_t /* cmd_id */, const NanEnableRequest& /* msg */) {
-    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
-}
-
-WifiStatus WifiNanIface::configRequestInternal(
-    uint16_t /* cmd_id */, const NanConfigRequest& /* msg */) {
-    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
-}
-
-WifiStatus WifiNanIface::disableRequestInternal(uint16_t cmd_id) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->nanDisableRequest(ifname_, cmd_id);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiNanIface::startPublishRequestInternal(
-    uint16_t cmd_id, const NanPublishRequest& msg) {
-    legacy_hal::NanPublishRequest legacy_msg;
-    if (!hidl_struct_util::convertHidlNanPublishRequestToLegacy(msg,
-                                                                &legacy_msg)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->nanPublishRequest(ifname_, cmd_id, legacy_msg);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiNanIface::stopPublishRequestInternal(uint16_t cmd_id,
-                                                    uint8_t sessionId) {
-    legacy_hal::NanPublishCancelRequest legacy_msg;
-    legacy_msg.publish_id = sessionId;
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->nanPublishCancelRequest(ifname_, cmd_id,
-                                                    legacy_msg);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiNanIface::startSubscribeRequestInternal(
-    uint16_t cmd_id, const NanSubscribeRequest& msg) {
-    legacy_hal::NanSubscribeRequest legacy_msg;
-    if (!hidl_struct_util::convertHidlNanSubscribeRequestToLegacy(
-            msg, &legacy_msg)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->nanSubscribeRequest(ifname_, cmd_id, legacy_msg);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiNanIface::stopSubscribeRequestInternal(uint16_t cmd_id,
-                                                      uint8_t sessionId) {
-    legacy_hal::NanSubscribeCancelRequest legacy_msg;
-    legacy_msg.subscribe_id = sessionId;
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->nanSubscribeCancelRequest(ifname_, cmd_id,
-                                                      legacy_msg);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiNanIface::transmitFollowupRequestInternal(
-    uint16_t cmd_id, const NanTransmitFollowupRequest& msg) {
-    legacy_hal::NanTransmitFollowupRequest legacy_msg;
-    if (!hidl_struct_util::convertHidlNanTransmitFollowupRequestToLegacy(
-            msg, &legacy_msg)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->nanTransmitFollowupRequest(ifname_, cmd_id,
-                                                       legacy_msg);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiNanIface::createDataInterfaceRequestInternal(
-    uint16_t cmd_id, const std::string& iface_name) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->nanDataInterfaceCreate(ifname_, cmd_id, iface_name);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-WifiStatus WifiNanIface::deleteDataInterfaceRequestInternal(
-    uint16_t cmd_id, const std::string& iface_name) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->nanDataInterfaceDelete(ifname_, cmd_id, iface_name);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-WifiStatus WifiNanIface::initiateDataPathRequestInternal(
-    uint16_t cmd_id, const NanInitiateDataPathRequest& msg) {
-    legacy_hal::NanDataPathInitiatorRequest legacy_msg;
-    if (!hidl_struct_util::convertHidlNanDataPathInitiatorRequestToLegacy(
-            msg, &legacy_msg)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->nanDataRequestInitiator(ifname_, cmd_id,
-                                                    legacy_msg);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-WifiStatus WifiNanIface::respondToDataPathIndicationRequestInternal(
-    uint16_t cmd_id, const NanRespondToDataPathIndicationRequest& msg) {
-    legacy_hal::NanDataPathIndicationResponse legacy_msg;
-    if (!hidl_struct_util::convertHidlNanDataPathIndicationResponseToLegacy(
-            msg, &legacy_msg)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->nanDataIndicationResponse(ifname_, cmd_id,
-                                                      legacy_msg);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-WifiStatus WifiNanIface::terminateDataPathRequestInternal(
-    uint16_t cmd_id, uint32_t ndpInstanceId) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->nanDataEnd(ifname_, cmd_id, ndpInstanceId);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiNanIface::registerEventCallback_1_2Internal(
-    const sp<V1_2::IWifiNanIfaceEventCallback>& callback) {
-    sp<V1_0::IWifiNanIfaceEventCallback> callback_1_0 = callback;
-    if (!event_cb_handler_.addCallback(callback_1_0)) {
-        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-    }
-    if (!event_cb_handler_1_2_.addCallback(callback)) {
-        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-    }
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-WifiStatus WifiNanIface::enableRequest_1_2Internal(
-    uint16_t cmd_id, const NanEnableRequest& msg1,
-    const V1_2::NanConfigRequestSupplemental& msg2) {
-    legacy_hal::NanEnableRequest legacy_msg;
-    if (!hidl_struct_util::convertHidlNanEnableRequest_1_2ToLegacy(
-            msg1, msg2, &legacy_msg)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->nanEnableRequest(ifname_, cmd_id, legacy_msg);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiNanIface::configRequest_1_2Internal(
-    uint16_t cmd_id, const NanConfigRequest& msg1,
-    const V1_2::NanConfigRequestSupplemental& msg2) {
-    legacy_hal::NanConfigRequest legacy_msg;
-    if (!hidl_struct_util::convertHidlNanConfigRequest_1_2ToLegacy(
-            msg1, msg2, &legacy_msg)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->nanConfigRequest(ifname_, cmd_id, legacy_msg);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.3/default/wifi_nan_iface.h b/wifi/1.3/default/wifi_nan_iface.h
deleted file mode 100644
index 737be93..0000000
--- a/wifi/1.3/default/wifi_nan_iface.h
+++ /dev/null
@@ -1,168 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef WIFI_NAN_IFACE_H_
-#define WIFI_NAN_IFACE_H_
-
-#include <android-base/macros.h>
-#include <android/hardware/wifi/1.0/IWifiNanIfaceEventCallback.h>
-#include <android/hardware/wifi/1.2/IWifiNanIface.h>
-
-#include "hidl_callback_util.h"
-#include "wifi_iface_util.h"
-#include "wifi_legacy_hal.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-using namespace android::hardware::wifi::V1_0;
-
-/**
- * HIDL interface object used to control a NAN Iface instance.
- */
-class WifiNanIface : public V1_2::IWifiNanIface {
-   public:
-    WifiNanIface(const std::string& ifname,
-                 const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
-                 const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util);
-    // Refer to |WifiChip::invalidate()|.
-    void invalidate();
-    bool isValid();
-    std::string getName();
-
-    // HIDL methods exposed.
-    Return<void> getName(getName_cb hidl_status_cb) override;
-    Return<void> getType(getType_cb hidl_status_cb) override;
-    Return<void> registerEventCallback(
-        const sp<V1_0::IWifiNanIfaceEventCallback>& callback,
-        registerEventCallback_cb hidl_status_cb) override;
-    Return<void> getCapabilitiesRequest(
-        uint16_t cmd_id, getCapabilitiesRequest_cb hidl_status_cb) override;
-    Return<void> enableRequest(uint16_t cmd_id, const NanEnableRequest& msg,
-                               enableRequest_cb hidl_status_cb) override;
-    Return<void> configRequest(uint16_t cmd_id, const NanConfigRequest& msg,
-                               configRequest_cb hidl_status_cb) override;
-    Return<void> disableRequest(uint16_t cmd_id,
-                                disableRequest_cb hidl_status_cb) override;
-    Return<void> startPublishRequest(
-        uint16_t cmd_id, const NanPublishRequest& msg,
-        startPublishRequest_cb hidl_status_cb) override;
-    Return<void> stopPublishRequest(
-        uint16_t cmd_id, uint8_t sessionId,
-        stopPublishRequest_cb hidl_status_cb) override;
-    Return<void> startSubscribeRequest(
-        uint16_t cmd_id, const NanSubscribeRequest& msg,
-        startSubscribeRequest_cb hidl_status_cb) override;
-    Return<void> stopSubscribeRequest(
-        uint16_t cmd_id, uint8_t sessionId,
-        stopSubscribeRequest_cb hidl_status_cb) override;
-    Return<void> transmitFollowupRequest(
-        uint16_t cmd_id, const NanTransmitFollowupRequest& msg,
-        transmitFollowupRequest_cb hidl_status_cb) override;
-    Return<void> createDataInterfaceRequest(
-        uint16_t cmd_id, const hidl_string& iface_name,
-        createDataInterfaceRequest_cb hidl_status_cb) override;
-    Return<void> deleteDataInterfaceRequest(
-        uint16_t cmd_id, const hidl_string& iface_name,
-        deleteDataInterfaceRequest_cb hidl_status_cb) override;
-    Return<void> initiateDataPathRequest(
-        uint16_t cmd_id, const NanInitiateDataPathRequest& msg,
-        initiateDataPathRequest_cb hidl_status_cb) override;
-    Return<void> respondToDataPathIndicationRequest(
-        uint16_t cmd_id, const NanRespondToDataPathIndicationRequest& msg,
-        respondToDataPathIndicationRequest_cb hidl_status_cb) override;
-    Return<void> terminateDataPathRequest(
-        uint16_t cmd_id, uint32_t ndpInstanceId,
-        terminateDataPathRequest_cb hidl_status_cb) override;
-
-    Return<void> registerEventCallback_1_2(
-        const sp<V1_2::IWifiNanIfaceEventCallback>& callback,
-        registerEventCallback_1_2_cb hidl_status_cb) override;
-    Return<void> enableRequest_1_2(
-        uint16_t cmd_id, const NanEnableRequest& msg1,
-        const V1_2::NanConfigRequestSupplemental& msg2,
-        enableRequest_1_2_cb hidl_status_cb) override;
-    Return<void> configRequest_1_2(
-        uint16_t cmd_id, const NanConfigRequest& msg1,
-        const V1_2::NanConfigRequestSupplemental& msg2,
-        configRequest_1_2_cb hidl_status_cb) override;
-
-   private:
-    // Corresponding worker functions for the HIDL methods.
-    std::pair<WifiStatus, std::string> getNameInternal();
-    std::pair<WifiStatus, IfaceType> getTypeInternal();
-    WifiStatus registerEventCallbackInternal(
-        const sp<V1_0::IWifiNanIfaceEventCallback>& callback);
-    WifiStatus getCapabilitiesRequestInternal(uint16_t cmd_id);
-    WifiStatus enableRequestInternal(uint16_t cmd_id,
-                                     const NanEnableRequest& msg);
-    WifiStatus configRequestInternal(uint16_t cmd_id,
-                                     const NanConfigRequest& msg);
-    WifiStatus disableRequestInternal(uint16_t cmd_id);
-    WifiStatus startPublishRequestInternal(uint16_t cmd_id,
-                                           const NanPublishRequest& msg);
-    WifiStatus stopPublishRequestInternal(uint16_t cmd_id, uint8_t sessionId);
-    WifiStatus startSubscribeRequestInternal(uint16_t cmd_id,
-                                             const NanSubscribeRequest& msg);
-    WifiStatus stopSubscribeRequestInternal(uint16_t cmd_id, uint8_t sessionId);
-    WifiStatus transmitFollowupRequestInternal(
-        uint16_t cmd_id, const NanTransmitFollowupRequest& msg);
-    WifiStatus createDataInterfaceRequestInternal(
-        uint16_t cmd_id, const std::string& iface_name);
-    WifiStatus deleteDataInterfaceRequestInternal(
-        uint16_t cmd_id, const std::string& iface_name);
-    WifiStatus initiateDataPathRequestInternal(
-        uint16_t cmd_id, const NanInitiateDataPathRequest& msg);
-    WifiStatus respondToDataPathIndicationRequestInternal(
-        uint16_t cmd_id, const NanRespondToDataPathIndicationRequest& msg);
-    WifiStatus terminateDataPathRequestInternal(uint16_t cmd_id,
-                                                uint32_t ndpInstanceId);
-
-    WifiStatus registerEventCallback_1_2Internal(
-        const sp<V1_2::IWifiNanIfaceEventCallback>& callback);
-    WifiStatus enableRequest_1_2Internal(
-        uint16_t cmd_id, const NanEnableRequest& msg1,
-        const V1_2::NanConfigRequestSupplemental& msg2);
-    WifiStatus configRequest_1_2Internal(
-        uint16_t cmd_id, const NanConfigRequest& msg,
-        const V1_2::NanConfigRequestSupplemental& msg2);
-
-    // all 1_0 and descendant callbacks
-    std::set<sp<V1_0::IWifiNanIfaceEventCallback>> getEventCallbacks();
-    // all 1_2 and descendant callbacks
-    std::set<sp<V1_2::IWifiNanIfaceEventCallback>> getEventCallbacks_1_2();
-
-    std::string ifname_;
-    std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
-    std::weak_ptr<iface_util::WifiIfaceUtil> iface_util_;
-    bool is_valid_;
-    hidl_callback_util::HidlCallbackHandler<V1_0::IWifiNanIfaceEventCallback>
-        event_cb_handler_;
-    hidl_callback_util::HidlCallbackHandler<V1_2::IWifiNanIfaceEventCallback>
-        event_cb_handler_1_2_;
-
-    DISALLOW_COPY_AND_ASSIGN(WifiNanIface);
-};
-
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // WIFI_NAN_IFACE_H_
diff --git a/wifi/1.3/default/wifi_p2p_iface.cpp b/wifi/1.3/default/wifi_p2p_iface.cpp
deleted file mode 100644
index b5d5886..0000000
--- a/wifi/1.3/default/wifi_p2p_iface.cpp
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-
-#include "hidl_return_util.h"
-#include "wifi_p2p_iface.h"
-#include "wifi_status_util.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-using hidl_return_util::validateAndCall;
-
-WifiP2pIface::WifiP2pIface(
-    const std::string& ifname,
-    const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal)
-    : ifname_(ifname), legacy_hal_(legacy_hal), is_valid_(true) {}
-
-void WifiP2pIface::invalidate() {
-    legacy_hal_.reset();
-    is_valid_ = false;
-}
-
-bool WifiP2pIface::isValid() { return is_valid_; }
-
-std::string WifiP2pIface::getName() { return ifname_; }
-
-Return<void> WifiP2pIface::getName(getName_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiP2pIface::getNameInternal, hidl_status_cb);
-}
-
-Return<void> WifiP2pIface::getType(getType_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiP2pIface::getTypeInternal, hidl_status_cb);
-}
-
-std::pair<WifiStatus, std::string> WifiP2pIface::getNameInternal() {
-    return {createWifiStatus(WifiStatusCode::SUCCESS), ifname_};
-}
-
-std::pair<WifiStatus, IfaceType> WifiP2pIface::getTypeInternal() {
-    return {createWifiStatus(WifiStatusCode::SUCCESS), IfaceType::P2P};
-}
-
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.3/default/wifi_p2p_iface.h b/wifi/1.3/default/wifi_p2p_iface.h
deleted file mode 100644
index 8a7207a..0000000
--- a/wifi/1.3/default/wifi_p2p_iface.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef WIFI_P2P_IFACE_H_
-#define WIFI_P2P_IFACE_H_
-
-#include <android-base/macros.h>
-#include <android/hardware/wifi/1.0/IWifiP2pIface.h>
-
-#include "wifi_legacy_hal.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-using namespace android::hardware::wifi::V1_0;
-
-/**
- * HIDL interface object used to control a P2P Iface instance.
- */
-class WifiP2pIface : public V1_0::IWifiP2pIface {
-   public:
-    WifiP2pIface(const std::string& ifname,
-                 const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal);
-    // Refer to |WifiChip::invalidate()|.
-    void invalidate();
-    bool isValid();
-    std::string getName();
-
-    // HIDL methods exposed.
-    Return<void> getName(getName_cb hidl_status_cb) override;
-    Return<void> getType(getType_cb hidl_status_cb) override;
-
-   private:
-    // Corresponding worker functions for the HIDL methods.
-    std::pair<WifiStatus, std::string> getNameInternal();
-    std::pair<WifiStatus, IfaceType> getTypeInternal();
-
-    std::string ifname_;
-    std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
-    bool is_valid_;
-
-    DISALLOW_COPY_AND_ASSIGN(WifiP2pIface);
-};
-
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // WIFI_P2P_IFACE_H_
diff --git a/wifi/1.3/default/wifi_rtt_controller.cpp b/wifi/1.3/default/wifi_rtt_controller.cpp
deleted file mode 100644
index 3dcbee6..0000000
--- a/wifi/1.3/default/wifi_rtt_controller.cpp
+++ /dev/null
@@ -1,277 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-
-#include "hidl_return_util.h"
-#include "hidl_struct_util.h"
-#include "wifi_rtt_controller.h"
-#include "wifi_status_util.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-using hidl_return_util::validateAndCall;
-
-WifiRttController::WifiRttController(
-    const std::string& iface_name, const sp<IWifiIface>& bound_iface,
-    const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal)
-    : ifname_(iface_name),
-      bound_iface_(bound_iface),
-      legacy_hal_(legacy_hal),
-      is_valid_(true) {}
-
-void WifiRttController::invalidate() {
-    legacy_hal_.reset();
-    event_callbacks_.clear();
-    is_valid_ = false;
-}
-
-bool WifiRttController::isValid() { return is_valid_; }
-
-std::vector<sp<IWifiRttControllerEventCallback>>
-WifiRttController::getEventCallbacks() {
-    return event_callbacks_;
-}
-
-std::string WifiRttController::getIfaceName() { return ifname_; }
-
-Return<void> WifiRttController::getBoundIface(getBoundIface_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
-        &WifiRttController::getBoundIfaceInternal, hidl_status_cb);
-}
-
-Return<void> WifiRttController::registerEventCallback(
-    const sp<IWifiRttControllerEventCallback>& callback,
-    registerEventCallback_cb hidl_status_cb) {
-    return validateAndCall(this,
-                           WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
-                           &WifiRttController::registerEventCallbackInternal,
-                           hidl_status_cb, callback);
-}
-
-Return<void> WifiRttController::rangeRequest(
-    uint32_t cmd_id, const hidl_vec<RttConfig>& rtt_configs,
-    rangeRequest_cb hidl_status_cb) {
-    return validateAndCall(this,
-                           WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
-                           &WifiRttController::rangeRequestInternal,
-                           hidl_status_cb, cmd_id, rtt_configs);
-}
-
-Return<void> WifiRttController::rangeCancel(
-    uint32_t cmd_id, const hidl_vec<hidl_array<uint8_t, 6>>& addrs,
-    rangeCancel_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
-        &WifiRttController::rangeCancelInternal, hidl_status_cb, cmd_id, addrs);
-}
-
-Return<void> WifiRttController::getCapabilities(
-    getCapabilities_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
-        &WifiRttController::getCapabilitiesInternal, hidl_status_cb);
-}
-
-Return<void> WifiRttController::setLci(uint32_t cmd_id,
-                                       const RttLciInformation& lci,
-                                       setLci_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
-        &WifiRttController::setLciInternal, hidl_status_cb, cmd_id, lci);
-}
-
-Return<void> WifiRttController::setLcr(uint32_t cmd_id,
-                                       const RttLcrInformation& lcr,
-                                       setLcr_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
-        &WifiRttController::setLcrInternal, hidl_status_cb, cmd_id, lcr);
-}
-
-Return<void> WifiRttController::getResponderInfo(
-    getResponderInfo_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
-        &WifiRttController::getResponderInfoInternal, hidl_status_cb);
-}
-
-Return<void> WifiRttController::enableResponder(
-    uint32_t cmd_id, const WifiChannelInfo& channel_hint,
-    uint32_t max_duration_seconds, const RttResponder& info,
-    enableResponder_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
-        &WifiRttController::enableResponderInternal, hidl_status_cb, cmd_id,
-        channel_hint, max_duration_seconds, info);
-}
-
-Return<void> WifiRttController::disableResponder(
-    uint32_t cmd_id, disableResponder_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
-        &WifiRttController::disableResponderInternal, hidl_status_cb, cmd_id);
-}
-
-std::pair<WifiStatus, sp<IWifiIface>>
-WifiRttController::getBoundIfaceInternal() {
-    return {createWifiStatus(WifiStatusCode::SUCCESS), bound_iface_};
-}
-
-WifiStatus WifiRttController::registerEventCallbackInternal(
-    const sp<IWifiRttControllerEventCallback>& callback) {
-    // TODO(b/31632518): remove the callback when the client is destroyed
-    event_callbacks_.emplace_back(callback);
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-WifiStatus WifiRttController::rangeRequestInternal(
-    uint32_t cmd_id, const std::vector<RttConfig>& rtt_configs) {
-    std::vector<legacy_hal::wifi_rtt_config> legacy_configs;
-    if (!hidl_struct_util::convertHidlVectorOfRttConfigToLegacy(
-            rtt_configs, &legacy_configs)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    android::wp<WifiRttController> weak_ptr_this(this);
-    const auto& on_results_callback =
-        [weak_ptr_this](
-            legacy_hal::wifi_request_id id,
-            const std::vector<const legacy_hal::wifi_rtt_result*>& results) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            std::vector<RttResult> hidl_results;
-            if (!hidl_struct_util::convertLegacyVectorOfRttResultToHidl(
-                    results, &hidl_results)) {
-                LOG(ERROR) << "Failed to convert rtt results to HIDL structs";
-                return;
-            }
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                callback->onResults(id, hidl_results);
-            }
-        };
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->startRttRangeRequest(
-            ifname_, cmd_id, legacy_configs, on_results_callback);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiRttController::rangeCancelInternal(
-    uint32_t cmd_id, const std::vector<hidl_array<uint8_t, 6>>& addrs) {
-    std::vector<std::array<uint8_t, 6>> legacy_addrs;
-    for (const auto& addr : addrs) {
-        legacy_addrs.push_back(addr);
-    }
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->cancelRttRangeRequest(ifname_, cmd_id,
-                                                  legacy_addrs);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-std::pair<WifiStatus, RttCapabilities>
-WifiRttController::getCapabilitiesInternal() {
-    legacy_hal::wifi_error legacy_status;
-    legacy_hal::wifi_rtt_capabilities legacy_caps;
-    std::tie(legacy_status, legacy_caps) =
-        legacy_hal_.lock()->getRttCapabilities(ifname_);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        return {createWifiStatusFromLegacyError(legacy_status), {}};
-    }
-    RttCapabilities hidl_caps;
-    if (!hidl_struct_util::convertLegacyRttCapabilitiesToHidl(legacy_caps,
-                                                              &hidl_caps)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
-}
-
-WifiStatus WifiRttController::setLciInternal(uint32_t cmd_id,
-                                             const RttLciInformation& lci) {
-    legacy_hal::wifi_lci_information legacy_lci;
-    if (!hidl_struct_util::convertHidlRttLciInformationToLegacy(lci,
-                                                                &legacy_lci)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->setRttLci(ifname_, cmd_id, legacy_lci);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiRttController::setLcrInternal(uint32_t cmd_id,
-                                             const RttLcrInformation& lcr) {
-    legacy_hal::wifi_lcr_information legacy_lcr;
-    if (!hidl_struct_util::convertHidlRttLcrInformationToLegacy(lcr,
-                                                                &legacy_lcr)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->setRttLcr(ifname_, cmd_id, legacy_lcr);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-std::pair<WifiStatus, RttResponder>
-WifiRttController::getResponderInfoInternal() {
-    legacy_hal::wifi_error legacy_status;
-    legacy_hal::wifi_rtt_responder legacy_responder;
-    std::tie(legacy_status, legacy_responder) =
-        legacy_hal_.lock()->getRttResponderInfo(ifname_);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        return {createWifiStatusFromLegacyError(legacy_status), {}};
-    }
-    RttResponder hidl_responder;
-    if (!hidl_struct_util::convertLegacyRttResponderToHidl(legacy_responder,
-                                                           &hidl_responder)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_responder};
-}
-
-WifiStatus WifiRttController::enableResponderInternal(
-    uint32_t cmd_id, const WifiChannelInfo& channel_hint,
-    uint32_t max_duration_seconds, const RttResponder& info) {
-    legacy_hal::wifi_channel_info legacy_channel_info;
-    if (!hidl_struct_util::convertHidlWifiChannelInfoToLegacy(
-            channel_hint, &legacy_channel_info)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    legacy_hal::wifi_rtt_responder legacy_responder;
-    if (!hidl_struct_util::convertHidlRttResponderToLegacy(info,
-                                                           &legacy_responder)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->enableRttResponder(
-            ifname_, cmd_id, legacy_channel_info, max_duration_seconds,
-            legacy_responder);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiRttController::disableResponderInternal(uint32_t cmd_id) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->disableRttResponder(ifname_, cmd_id);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.3/default/wifi_rtt_controller.h b/wifi/1.3/default/wifi_rtt_controller.h
deleted file mode 100644
index eedd22a..0000000
--- a/wifi/1.3/default/wifi_rtt_controller.h
+++ /dev/null
@@ -1,106 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef WIFI_RTT_CONTROLLER_H_
-#define WIFI_RTT_CONTROLLER_H_
-
-#include <android-base/macros.h>
-#include <android/hardware/wifi/1.0/IWifiIface.h>
-#include <android/hardware/wifi/1.0/IWifiRttController.h>
-#include <android/hardware/wifi/1.0/IWifiRttControllerEventCallback.h>
-
-#include "wifi_legacy_hal.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-
-/**
- * HIDL interface object used to control all RTT operations.
- */
-class WifiRttController : public V1_0::IWifiRttController {
-   public:
-    WifiRttController(
-        const std::string& iface_name, const sp<IWifiIface>& bound_iface,
-        const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal);
-    // Refer to |WifiChip::invalidate()|.
-    void invalidate();
-    bool isValid();
-    std::vector<sp<IWifiRttControllerEventCallback>> getEventCallbacks();
-    std::string getIfaceName();
-
-    // HIDL methods exposed.
-    Return<void> getBoundIface(getBoundIface_cb hidl_status_cb) override;
-    Return<void> registerEventCallback(
-        const sp<IWifiRttControllerEventCallback>& callback,
-        registerEventCallback_cb hidl_status_cb) override;
-    Return<void> rangeRequest(uint32_t cmd_id,
-                              const hidl_vec<RttConfig>& rtt_configs,
-                              rangeRequest_cb hidl_status_cb) override;
-    Return<void> rangeCancel(uint32_t cmd_id,
-                             const hidl_vec<hidl_array<uint8_t, 6>>& addrs,
-                             rangeCancel_cb hidl_status_cb) override;
-    Return<void> getCapabilities(getCapabilities_cb hidl_status_cb) override;
-    Return<void> setLci(uint32_t cmd_id, const RttLciInformation& lci,
-                        setLci_cb hidl_status_cb) override;
-    Return<void> setLcr(uint32_t cmd_id, const RttLcrInformation& lcr,
-                        setLcr_cb hidl_status_cb) override;
-    Return<void> getResponderInfo(getResponderInfo_cb hidl_status_cb) override;
-    Return<void> enableResponder(uint32_t cmd_id,
-                                 const WifiChannelInfo& channel_hint,
-                                 uint32_t max_duration_seconds,
-                                 const RttResponder& info,
-                                 enableResponder_cb hidl_status_cb) override;
-    Return<void> disableResponder(uint32_t cmd_id,
-                                  disableResponder_cb hidl_status_cb) override;
-
-   private:
-    // Corresponding worker functions for the HIDL methods.
-    std::pair<WifiStatus, sp<IWifiIface>> getBoundIfaceInternal();
-    WifiStatus registerEventCallbackInternal(
-        const sp<IWifiRttControllerEventCallback>& callback);
-    WifiStatus rangeRequestInternal(uint32_t cmd_id,
-                                    const std::vector<RttConfig>& rtt_configs);
-    WifiStatus rangeCancelInternal(
-        uint32_t cmd_id, const std::vector<hidl_array<uint8_t, 6>>& addrs);
-    std::pair<WifiStatus, RttCapabilities> getCapabilitiesInternal();
-    WifiStatus setLciInternal(uint32_t cmd_id, const RttLciInformation& lci);
-    WifiStatus setLcrInternal(uint32_t cmd_id, const RttLcrInformation& lcr);
-    std::pair<WifiStatus, RttResponder> getResponderInfoInternal();
-    WifiStatus enableResponderInternal(uint32_t cmd_id,
-                                       const WifiChannelInfo& channel_hint,
-                                       uint32_t max_duration_seconds,
-                                       const RttResponder& info);
-    WifiStatus disableResponderInternal(uint32_t cmd_id);
-
-    std::string ifname_;
-    sp<IWifiIface> bound_iface_;
-    std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
-    std::vector<sp<IWifiRttControllerEventCallback>> event_callbacks_;
-    bool is_valid_;
-
-    DISALLOW_COPY_AND_ASSIGN(WifiRttController);
-};
-
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // WIFI_RTT_CONTROLLER_H_
diff --git a/wifi/1.3/default/wifi_sta_iface.cpp b/wifi/1.3/default/wifi_sta_iface.cpp
deleted file mode 100644
index a6539e5..0000000
--- a/wifi/1.3/default/wifi_sta_iface.cpp
+++ /dev/null
@@ -1,647 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <android-base/logging.h>
-
-#include "hidl_return_util.h"
-#include "hidl_struct_util.h"
-#include "wifi_sta_iface.h"
-#include "wifi_status_util.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-using hidl_return_util::validateAndCall;
-
-WifiStaIface::WifiStaIface(
-    const std::string& ifname,
-    const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
-    const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util)
-    : ifname_(ifname),
-      legacy_hal_(legacy_hal),
-      iface_util_(iface_util),
-      is_valid_(true) {
-    // Turn on DFS channel usage for STA iface.
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->setDfsFlag(ifname_, true);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        LOG(ERROR)
-            << "Failed to set DFS flag; DFS channels may be unavailable.";
-    }
-}
-
-void WifiStaIface::invalidate() {
-    legacy_hal_.reset();
-    event_cb_handler_.invalidate();
-    is_valid_ = false;
-}
-
-bool WifiStaIface::isValid() { return is_valid_; }
-
-std::string WifiStaIface::getName() { return ifname_; }
-
-std::set<sp<IWifiStaIfaceEventCallback>> WifiStaIface::getEventCallbacks() {
-    return event_cb_handler_.getCallbacks();
-}
-
-Return<void> WifiStaIface::getName(getName_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::getNameInternal, hidl_status_cb);
-}
-
-Return<void> WifiStaIface::getType(getType_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::getTypeInternal, hidl_status_cb);
-}
-
-Return<void> WifiStaIface::registerEventCallback(
-    const sp<IWifiStaIfaceEventCallback>& callback,
-    registerEventCallback_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::registerEventCallbackInternal,
-                           hidl_status_cb, callback);
-}
-
-Return<void> WifiStaIface::getCapabilities(getCapabilities_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::getCapabilitiesInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiStaIface::getApfPacketFilterCapabilities(
-    getApfPacketFilterCapabilities_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-        &WifiStaIface::getApfPacketFilterCapabilitiesInternal, hidl_status_cb);
-}
-
-Return<void> WifiStaIface::installApfPacketFilter(
-    uint32_t cmd_id, const hidl_vec<uint8_t>& program,
-    installApfPacketFilter_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::installApfPacketFilterInternal,
-                           hidl_status_cb, cmd_id, program);
-}
-
-Return<void> WifiStaIface::readApfPacketFilterData(
-    readApfPacketFilterData_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::readApfPacketFilterDataInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiStaIface::getBackgroundScanCapabilities(
-    getBackgroundScanCapabilities_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::getBackgroundScanCapabilitiesInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiStaIface::getValidFrequenciesForBand(
-    WifiBand band, getValidFrequenciesForBand_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::getValidFrequenciesForBandInternal,
-                           hidl_status_cb, band);
-}
-
-Return<void> WifiStaIface::startBackgroundScan(
-    uint32_t cmd_id, const StaBackgroundScanParameters& params,
-    startBackgroundScan_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::startBackgroundScanInternal,
-                           hidl_status_cb, cmd_id, params);
-}
-
-Return<void> WifiStaIface::stopBackgroundScan(
-    uint32_t cmd_id, stopBackgroundScan_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::stopBackgroundScanInternal,
-                           hidl_status_cb, cmd_id);
-}
-
-Return<void> WifiStaIface::enableLinkLayerStatsCollection(
-    bool debug, enableLinkLayerStatsCollection_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-        &WifiStaIface::enableLinkLayerStatsCollectionInternal, hidl_status_cb,
-        debug);
-}
-
-Return<void> WifiStaIface::disableLinkLayerStatsCollection(
-    disableLinkLayerStatsCollection_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-        &WifiStaIface::disableLinkLayerStatsCollectionInternal, hidl_status_cb);
-}
-
-Return<void> WifiStaIface::getLinkLayerStats(
-    getLinkLayerStats_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::getLinkLayerStatsInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiStaIface::getLinkLayerStats_1_3(
-    getLinkLayerStats_1_3_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::getLinkLayerStatsInternal_1_3,
-                           hidl_status_cb);
-}
-
-Return<void> WifiStaIface::startRssiMonitoring(
-    uint32_t cmd_id, int32_t max_rssi, int32_t min_rssi,
-    startRssiMonitoring_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::startRssiMonitoringInternal,
-                           hidl_status_cb, cmd_id, max_rssi, min_rssi);
-}
-
-Return<void> WifiStaIface::stopRssiMonitoring(
-    uint32_t cmd_id, stopRssiMonitoring_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::stopRssiMonitoringInternal,
-                           hidl_status_cb, cmd_id);
-}
-
-Return<void> WifiStaIface::getRoamingCapabilities(
-    getRoamingCapabilities_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::getRoamingCapabilitiesInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiStaIface::configureRoaming(
-    const StaRoamingConfig& config, configureRoaming_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::configureRoamingInternal,
-                           hidl_status_cb, config);
-}
-
-Return<void> WifiStaIface::setRoamingState(StaRoamingState state,
-                                           setRoamingState_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::setRoamingStateInternal,
-                           hidl_status_cb, state);
-}
-
-Return<void> WifiStaIface::enableNdOffload(bool enable,
-                                           enableNdOffload_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::enableNdOffloadInternal,
-                           hidl_status_cb, enable);
-}
-
-Return<void> WifiStaIface::startSendingKeepAlivePackets(
-    uint32_t cmd_id, const hidl_vec<uint8_t>& ip_packet_data,
-    uint16_t ether_type, const hidl_array<uint8_t, 6>& src_address,
-    const hidl_array<uint8_t, 6>& dst_address, uint32_t period_in_ms,
-    startSendingKeepAlivePackets_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::startSendingKeepAlivePacketsInternal,
-                           hidl_status_cb, cmd_id, ip_packet_data, ether_type,
-                           src_address, dst_address, period_in_ms);
-}
-
-Return<void> WifiStaIface::stopSendingKeepAlivePackets(
-    uint32_t cmd_id, stopSendingKeepAlivePackets_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::stopSendingKeepAlivePacketsInternal,
-                           hidl_status_cb, cmd_id);
-}
-
-Return<void> WifiStaIface::setScanningMacOui(
-    const hidl_array<uint8_t, 3>& oui, setScanningMacOui_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::setScanningMacOuiInternal,
-                           hidl_status_cb, oui);
-}
-
-Return<void> WifiStaIface::startDebugPacketFateMonitoring(
-    startDebugPacketFateMonitoring_cb hidl_status_cb) {
-    return validateAndCall(
-        this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-        &WifiStaIface::startDebugPacketFateMonitoringInternal, hidl_status_cb);
-}
-
-Return<void> WifiStaIface::getDebugTxPacketFates(
-    getDebugTxPacketFates_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::getDebugTxPacketFatesInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiStaIface::getDebugRxPacketFates(
-    getDebugRxPacketFates_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::getDebugRxPacketFatesInternal,
-                           hidl_status_cb);
-}
-
-Return<void> WifiStaIface::setMacAddress(const hidl_array<uint8_t, 6>& mac,
-                                         setMacAddress_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::setMacAddressInternal, hidl_status_cb,
-                           mac);
-}
-
-Return<void> WifiStaIface::getFactoryMacAddress(
-    getFactoryMacAddress_cb hidl_status_cb) {
-    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
-                           &WifiStaIface::getFactoryMacAddressInternal,
-                           hidl_status_cb);
-}
-
-std::pair<WifiStatus, std::string> WifiStaIface::getNameInternal() {
-    return {createWifiStatus(WifiStatusCode::SUCCESS), ifname_};
-}
-
-std::pair<WifiStatus, IfaceType> WifiStaIface::getTypeInternal() {
-    return {createWifiStatus(WifiStatusCode::SUCCESS), IfaceType::STA};
-}
-
-WifiStatus WifiStaIface::registerEventCallbackInternal(
-    const sp<IWifiStaIfaceEventCallback>& callback) {
-    if (!event_cb_handler_.addCallback(callback)) {
-        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-    }
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-std::pair<WifiStatus, uint32_t> WifiStaIface::getCapabilitiesInternal() {
-    legacy_hal::wifi_error legacy_status;
-    uint32_t legacy_feature_set;
-    std::tie(legacy_status, legacy_feature_set) =
-        legacy_hal_.lock()->getSupportedFeatureSet(ifname_);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        return {createWifiStatusFromLegacyError(legacy_status), 0};
-    }
-    uint32_t legacy_logger_feature_set;
-    std::tie(legacy_status, legacy_logger_feature_set) =
-        legacy_hal_.lock()->getLoggerSupportedFeatureSet(ifname_);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        // some devices don't support querying logger feature set
-        legacy_logger_feature_set = 0;
-    }
-    uint32_t hidl_caps;
-    if (!hidl_struct_util::convertLegacyFeaturesToHidlStaCapabilities(
-            legacy_feature_set, legacy_logger_feature_set, &hidl_caps)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), 0};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
-}
-
-std::pair<WifiStatus, StaApfPacketFilterCapabilities>
-WifiStaIface::getApfPacketFilterCapabilitiesInternal() {
-    legacy_hal::wifi_error legacy_status;
-    legacy_hal::PacketFilterCapabilities legacy_caps;
-    std::tie(legacy_status, legacy_caps) =
-        legacy_hal_.lock()->getPacketFilterCapabilities(ifname_);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        return {createWifiStatusFromLegacyError(legacy_status), {}};
-    }
-    StaApfPacketFilterCapabilities hidl_caps;
-    if (!hidl_struct_util::convertLegacyApfCapabilitiesToHidl(legacy_caps,
-                                                              &hidl_caps)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
-}
-
-WifiStatus WifiStaIface::installApfPacketFilterInternal(
-    uint32_t /* cmd_id */, const std::vector<uint8_t>& program) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->setPacketFilter(ifname_, program);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-std::pair<WifiStatus, std::vector<uint8_t>>
-WifiStaIface::readApfPacketFilterDataInternal() {
-    const std::pair<legacy_hal::wifi_error, std::vector<uint8_t>>
-        legacy_status_and_data =
-            legacy_hal_.lock()->readApfPacketFilterData(ifname_);
-    return {createWifiStatusFromLegacyError(legacy_status_and_data.first),
-            std::move(legacy_status_and_data.second)};
-}
-
-std::pair<WifiStatus, StaBackgroundScanCapabilities>
-WifiStaIface::getBackgroundScanCapabilitiesInternal() {
-    legacy_hal::wifi_error legacy_status;
-    legacy_hal::wifi_gscan_capabilities legacy_caps;
-    std::tie(legacy_status, legacy_caps) =
-        legacy_hal_.lock()->getGscanCapabilities(ifname_);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        return {createWifiStatusFromLegacyError(legacy_status), {}};
-    }
-    StaBackgroundScanCapabilities hidl_caps;
-    if (!hidl_struct_util::convertLegacyGscanCapabilitiesToHidl(legacy_caps,
-                                                                &hidl_caps)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
-}
-
-std::pair<WifiStatus, std::vector<WifiChannelInMhz>>
-WifiStaIface::getValidFrequenciesForBandInternal(WifiBand band) {
-    static_assert(sizeof(WifiChannelInMhz) == sizeof(uint32_t),
-                  "Size mismatch");
-    legacy_hal::wifi_error legacy_status;
-    std::vector<uint32_t> valid_frequencies;
-    std::tie(legacy_status, valid_frequencies) =
-        legacy_hal_.lock()->getValidFrequenciesForBand(
-            ifname_, hidl_struct_util::convertHidlWifiBandToLegacy(band));
-    return {createWifiStatusFromLegacyError(legacy_status), valid_frequencies};
-}
-
-WifiStatus WifiStaIface::startBackgroundScanInternal(
-    uint32_t cmd_id, const StaBackgroundScanParameters& params) {
-    legacy_hal::wifi_scan_cmd_params legacy_params;
-    if (!hidl_struct_util::convertHidlGscanParamsToLegacy(params,
-                                                          &legacy_params)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    android::wp<WifiStaIface> weak_ptr_this(this);
-    const auto& on_failure_callback =
-        [weak_ptr_this](legacy_hal::wifi_request_id id) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                if (!callback->onBackgroundScanFailure(id).isOk()) {
-                    LOG(ERROR)
-                        << "Failed to invoke onBackgroundScanFailure callback";
-                }
-            }
-        };
-    const auto& on_results_callback =
-        [weak_ptr_this](
-            legacy_hal::wifi_request_id id,
-            const std::vector<legacy_hal::wifi_cached_scan_results>& results) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            std::vector<StaScanData> hidl_scan_datas;
-            if (!hidl_struct_util::
-                    convertLegacyVectorOfCachedGscanResultsToHidl(
-                        results, &hidl_scan_datas)) {
-                LOG(ERROR) << "Failed to convert scan results to HIDL structs";
-                return;
-            }
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                if (!callback->onBackgroundScanResults(id, hidl_scan_datas)
-                         .isOk()) {
-                    LOG(ERROR)
-                        << "Failed to invoke onBackgroundScanResults callback";
-                }
-            }
-        };
-    const auto& on_full_result_callback = [weak_ptr_this](
-                                              legacy_hal::wifi_request_id id,
-                                              const legacy_hal::
-                                                  wifi_scan_result* result,
-                                              uint32_t buckets_scanned) {
-        const auto shared_ptr_this = weak_ptr_this.promote();
-        if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-            LOG(ERROR) << "Callback invoked on an invalid object";
-            return;
-        }
-        StaScanResult hidl_scan_result;
-        if (!hidl_struct_util::convertLegacyGscanResultToHidl(
-                *result, true, &hidl_scan_result)) {
-            LOG(ERROR) << "Failed to convert full scan results to HIDL structs";
-            return;
-        }
-        for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-            if (!callback
-                     ->onBackgroundFullScanResult(id, buckets_scanned,
-                                                  hidl_scan_result)
-                     .isOk()) {
-                LOG(ERROR)
-                    << "Failed to invoke onBackgroundFullScanResult callback";
-            }
-        }
-    };
-    legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->startGscan(
-        ifname_, cmd_id, legacy_params, on_failure_callback,
-        on_results_callback, on_full_result_callback);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiStaIface::stopBackgroundScanInternal(uint32_t cmd_id) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->stopGscan(ifname_, cmd_id);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiStaIface::enableLinkLayerStatsCollectionInternal(bool debug) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->enableLinkLayerStats(ifname_, debug);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiStaIface::disableLinkLayerStatsCollectionInternal() {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->disableLinkLayerStats(ifname_);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-std::pair<WifiStatus, V1_0::StaLinkLayerStats>
-WifiStaIface::getLinkLayerStatsInternal() {
-    return {createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED), {}};
-}
-
-std::pair<WifiStatus, V1_3::StaLinkLayerStats>
-WifiStaIface::getLinkLayerStatsInternal_1_3() {
-    legacy_hal::wifi_error legacy_status;
-    legacy_hal::LinkLayerStats legacy_stats;
-    std::tie(legacy_status, legacy_stats) =
-        legacy_hal_.lock()->getLinkLayerStats(ifname_);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        return {createWifiStatusFromLegacyError(legacy_status), {}};
-    }
-    V1_3::StaLinkLayerStats hidl_stats;
-    if (!hidl_struct_util::convertLegacyLinkLayerStatsToHidl(legacy_stats,
-                                                             &hidl_stats)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_stats};
-}
-
-WifiStatus WifiStaIface::startRssiMonitoringInternal(uint32_t cmd_id,
-                                                     int32_t max_rssi,
-                                                     int32_t min_rssi) {
-    android::wp<WifiStaIface> weak_ptr_this(this);
-    const auto& on_threshold_breached_callback =
-        [weak_ptr_this](legacy_hal::wifi_request_id id,
-                        std::array<uint8_t, 6> bssid, int8_t rssi) {
-            const auto shared_ptr_this = weak_ptr_this.promote();
-            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
-                LOG(ERROR) << "Callback invoked on an invalid object";
-                return;
-            }
-            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
-                if (!callback->onRssiThresholdBreached(id, bssid, rssi)
-                         .isOk()) {
-                    LOG(ERROR)
-                        << "Failed to invoke onRssiThresholdBreached callback";
-                }
-            }
-        };
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->startRssiMonitoring(ifname_, cmd_id, max_rssi,
-                                                min_rssi,
-                                                on_threshold_breached_callback);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiStaIface::stopRssiMonitoringInternal(uint32_t cmd_id) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->stopRssiMonitoring(ifname_, cmd_id);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-std::pair<WifiStatus, StaRoamingCapabilities>
-WifiStaIface::getRoamingCapabilitiesInternal() {
-    legacy_hal::wifi_error legacy_status;
-    legacy_hal::wifi_roaming_capabilities legacy_caps;
-    std::tie(legacy_status, legacy_caps) =
-        legacy_hal_.lock()->getRoamingCapabilities(ifname_);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        return {createWifiStatusFromLegacyError(legacy_status), {}};
-    }
-    StaRoamingCapabilities hidl_caps;
-    if (!hidl_struct_util::convertLegacyRoamingCapabilitiesToHidl(legacy_caps,
-                                                                  &hidl_caps)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
-}
-
-WifiStatus WifiStaIface::configureRoamingInternal(
-    const StaRoamingConfig& config) {
-    legacy_hal::wifi_roaming_config legacy_config;
-    if (!hidl_struct_util::convertHidlRoamingConfigToLegacy(config,
-                                                            &legacy_config)) {
-        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
-    }
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->configureRoaming(ifname_, legacy_config);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiStaIface::setRoamingStateInternal(StaRoamingState state) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->enableFirmwareRoaming(
-            ifname_, hidl_struct_util::convertHidlRoamingStateToLegacy(state));
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiStaIface::enableNdOffloadInternal(bool enable) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->configureNdOffload(ifname_, enable);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiStaIface::startSendingKeepAlivePacketsInternal(
-    uint32_t cmd_id, const std::vector<uint8_t>& ip_packet_data,
-    uint16_t ether_type, const std::array<uint8_t, 6>& src_address,
-    const std::array<uint8_t, 6>& dst_address, uint32_t period_in_ms) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->startSendingOffloadedPacket(
-            ifname_, cmd_id, ether_type, ip_packet_data, src_address,
-            dst_address, period_in_ms);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiStaIface::stopSendingKeepAlivePacketsInternal(uint32_t cmd_id) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->stopSendingOffloadedPacket(ifname_, cmd_id);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiStaIface::setScanningMacOuiInternal(
-    const std::array<uint8_t, 3>& oui) {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->setScanningMacOui(ifname_, oui);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-WifiStatus WifiStaIface::startDebugPacketFateMonitoringInternal() {
-    legacy_hal::wifi_error legacy_status =
-        legacy_hal_.lock()->startPktFateMonitoring(ifname_);
-    return createWifiStatusFromLegacyError(legacy_status);
-}
-
-std::pair<WifiStatus, std::vector<WifiDebugTxPacketFateReport>>
-WifiStaIface::getDebugTxPacketFatesInternal() {
-    legacy_hal::wifi_error legacy_status;
-    std::vector<legacy_hal::wifi_tx_report> legacy_fates;
-    std::tie(legacy_status, legacy_fates) =
-        legacy_hal_.lock()->getTxPktFates(ifname_);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        return {createWifiStatusFromLegacyError(legacy_status), {}};
-    }
-    std::vector<WifiDebugTxPacketFateReport> hidl_fates;
-    if (!hidl_struct_util::convertLegacyVectorOfDebugTxPacketFateToHidl(
-            legacy_fates, &hidl_fates)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_fates};
-}
-
-std::pair<WifiStatus, std::vector<WifiDebugRxPacketFateReport>>
-WifiStaIface::getDebugRxPacketFatesInternal() {
-    legacy_hal::wifi_error legacy_status;
-    std::vector<legacy_hal::wifi_rx_report> legacy_fates;
-    std::tie(legacy_status, legacy_fates) =
-        legacy_hal_.lock()->getRxPktFates(ifname_);
-    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
-        return {createWifiStatusFromLegacyError(legacy_status), {}};
-    }
-    std::vector<WifiDebugRxPacketFateReport> hidl_fates;
-    if (!hidl_struct_util::convertLegacyVectorOfDebugRxPacketFateToHidl(
-            legacy_fates, &hidl_fates)) {
-        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
-    }
-    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_fates};
-}
-
-WifiStatus WifiStaIface::setMacAddressInternal(
-    const std::array<uint8_t, 6>& mac) {
-    bool status = iface_util_.lock()->setMacAddress(ifname_, mac);
-    if (!status) {
-        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
-    }
-    return createWifiStatus(WifiStatusCode::SUCCESS);
-}
-
-std::pair<WifiStatus, std::array<uint8_t, 6>>
-WifiStaIface::getFactoryMacAddressInternal() {
-    std::array<uint8_t, 6> mac =
-        iface_util_.lock()->getFactoryMacAddress(ifname_);
-    return {createWifiStatus(WifiStatusCode::SUCCESS), mac};
-}
-
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.3/default/wifi_sta_iface.h b/wifi/1.3/default/wifi_sta_iface.h
deleted file mode 100644
index 9224939..0000000
--- a/wifi/1.3/default/wifi_sta_iface.h
+++ /dev/null
@@ -1,179 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef WIFI_STA_IFACE_H_
-#define WIFI_STA_IFACE_H_
-
-#include <android-base/macros.h>
-#include <android/hardware/wifi/1.0/IWifiStaIfaceEventCallback.h>
-#include <android/hardware/wifi/1.3/IWifiStaIface.h>
-
-#include "hidl_callback_util.h"
-#include "wifi_iface_util.h"
-#include "wifi_legacy_hal.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-using namespace android::hardware::wifi::V1_0;
-
-/**
- * HIDL interface object used to control a STA Iface instance.
- */
-class WifiStaIface : public V1_3::IWifiStaIface {
-   public:
-    WifiStaIface(const std::string& ifname,
-                 const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
-                 const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util);
-    // Refer to |WifiChip::invalidate()|.
-    void invalidate();
-    bool isValid();
-    std::set<sp<IWifiStaIfaceEventCallback>> getEventCallbacks();
-    std::string getName();
-
-    // HIDL methods exposed.
-    Return<void> getName(getName_cb hidl_status_cb) override;
-    Return<void> getType(getType_cb hidl_status_cb) override;
-    Return<void> registerEventCallback(
-        const sp<IWifiStaIfaceEventCallback>& callback,
-        registerEventCallback_cb hidl_status_cb) override;
-    Return<void> getCapabilities(getCapabilities_cb hidl_status_cb) override;
-    Return<void> getApfPacketFilterCapabilities(
-        getApfPacketFilterCapabilities_cb hidl_status_cb) override;
-    Return<void> installApfPacketFilter(
-        uint32_t cmd_id, const hidl_vec<uint8_t>& program,
-        installApfPacketFilter_cb hidl_status_cb) override;
-    Return<void> readApfPacketFilterData(
-        readApfPacketFilterData_cb hidl_status_cb) override;
-    Return<void> getBackgroundScanCapabilities(
-        getBackgroundScanCapabilities_cb hidl_status_cb) override;
-    Return<void> getValidFrequenciesForBand(
-        WifiBand band, getValidFrequenciesForBand_cb hidl_status_cb) override;
-    Return<void> startBackgroundScan(
-        uint32_t cmd_id, const StaBackgroundScanParameters& params,
-        startBackgroundScan_cb hidl_status_cb) override;
-    Return<void> stopBackgroundScan(
-        uint32_t cmd_id, stopBackgroundScan_cb hidl_status_cb) override;
-    Return<void> enableLinkLayerStatsCollection(
-        bool debug, enableLinkLayerStatsCollection_cb hidl_status_cb) override;
-    Return<void> disableLinkLayerStatsCollection(
-        disableLinkLayerStatsCollection_cb hidl_status_cb) override;
-    Return<void> getLinkLayerStats(
-        getLinkLayerStats_cb hidl_status_cb) override;
-    Return<void> getLinkLayerStats_1_3(
-        getLinkLayerStats_1_3_cb hidl_status_cb) override;
-    Return<void> startRssiMonitoring(
-        uint32_t cmd_id, int32_t max_rssi, int32_t min_rssi,
-        startRssiMonitoring_cb hidl_status_cb) override;
-    Return<void> stopRssiMonitoring(
-        uint32_t cmd_id, stopRssiMonitoring_cb hidl_status_cb) override;
-    Return<void> getRoamingCapabilities(
-        getRoamingCapabilities_cb hidl_status_cb) override;
-    Return<void> configureRoaming(const StaRoamingConfig& config,
-                                  configureRoaming_cb hidl_status_cb) override;
-    Return<void> setRoamingState(StaRoamingState state,
-                                 setRoamingState_cb hidl_status_cb) override;
-    Return<void> enableNdOffload(bool enable,
-                                 enableNdOffload_cb hidl_status_cb) override;
-    Return<void> startSendingKeepAlivePackets(
-        uint32_t cmd_id, const hidl_vec<uint8_t>& ip_packet_data,
-        uint16_t ether_type, const hidl_array<uint8_t, 6>& src_address,
-        const hidl_array<uint8_t, 6>& dst_address, uint32_t period_in_ms,
-        startSendingKeepAlivePackets_cb hidl_status_cb) override;
-    Return<void> stopSendingKeepAlivePackets(
-        uint32_t cmd_id,
-        stopSendingKeepAlivePackets_cb hidl_status_cb) override;
-    Return<void> setScanningMacOui(
-        const hidl_array<uint8_t, 3>& oui,
-        setScanningMacOui_cb hidl_status_cb) override;
-    Return<void> startDebugPacketFateMonitoring(
-        startDebugPacketFateMonitoring_cb hidl_status_cb) override;
-    Return<void> getDebugTxPacketFates(
-        getDebugTxPacketFates_cb hidl_status_cb) override;
-    Return<void> getDebugRxPacketFates(
-        getDebugRxPacketFates_cb hidl_status_cb) override;
-    Return<void> setMacAddress(const hidl_array<uint8_t, 6>& mac,
-                               setMacAddress_cb hidl_status_cb) override;
-    Return<void> getFactoryMacAddress(
-        getFactoryMacAddress_cb hidl_status_cb) override;
-
-   private:
-    // Corresponding worker functions for the HIDL methods.
-    std::pair<WifiStatus, std::string> getNameInternal();
-    std::pair<WifiStatus, IfaceType> getTypeInternal();
-    WifiStatus registerEventCallbackInternal(
-        const sp<IWifiStaIfaceEventCallback>& callback);
-    std::pair<WifiStatus, uint32_t> getCapabilitiesInternal();
-    std::pair<WifiStatus, StaApfPacketFilterCapabilities>
-    getApfPacketFilterCapabilitiesInternal();
-    WifiStatus installApfPacketFilterInternal(
-        uint32_t cmd_id, const std::vector<uint8_t>& program);
-    std::pair<WifiStatus, std::vector<uint8_t>>
-    readApfPacketFilterDataInternal();
-    std::pair<WifiStatus, StaBackgroundScanCapabilities>
-    getBackgroundScanCapabilitiesInternal();
-    std::pair<WifiStatus, std::vector<WifiChannelInMhz>>
-    getValidFrequenciesForBandInternal(WifiBand band);
-    WifiStatus startBackgroundScanInternal(
-        uint32_t cmd_id, const StaBackgroundScanParameters& params);
-    WifiStatus stopBackgroundScanInternal(uint32_t cmd_id);
-    WifiStatus enableLinkLayerStatsCollectionInternal(bool debug);
-    WifiStatus disableLinkLayerStatsCollectionInternal();
-    std::pair<WifiStatus, V1_0::StaLinkLayerStats> getLinkLayerStatsInternal();
-    std::pair<WifiStatus, V1_3::StaLinkLayerStats>
-    getLinkLayerStatsInternal_1_3();
-    WifiStatus startRssiMonitoringInternal(uint32_t cmd_id, int32_t max_rssi,
-                                           int32_t min_rssi);
-    WifiStatus stopRssiMonitoringInternal(uint32_t cmd_id);
-    std::pair<WifiStatus, StaRoamingCapabilities>
-    getRoamingCapabilitiesInternal();
-    WifiStatus configureRoamingInternal(const StaRoamingConfig& config);
-    WifiStatus setRoamingStateInternal(StaRoamingState state);
-    WifiStatus enableNdOffloadInternal(bool enable);
-    WifiStatus startSendingKeepAlivePacketsInternal(
-        uint32_t cmd_id, const std::vector<uint8_t>& ip_packet_data,
-        uint16_t ether_type, const std::array<uint8_t, 6>& src_address,
-        const std::array<uint8_t, 6>& dst_address, uint32_t period_in_ms);
-    WifiStatus stopSendingKeepAlivePacketsInternal(uint32_t cmd_id);
-    WifiStatus setScanningMacOuiInternal(const std::array<uint8_t, 3>& oui);
-    WifiStatus startDebugPacketFateMonitoringInternal();
-    std::pair<WifiStatus, std::vector<WifiDebugTxPacketFateReport>>
-    getDebugTxPacketFatesInternal();
-    std::pair<WifiStatus, std::vector<WifiDebugRxPacketFateReport>>
-    getDebugRxPacketFatesInternal();
-    WifiStatus setMacAddressInternal(const std::array<uint8_t, 6>& mac);
-    std::pair<WifiStatus, std::array<uint8_t, 6>>
-    getFactoryMacAddressInternal();
-
-    std::string ifname_;
-    std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
-    std::weak_ptr<iface_util::WifiIfaceUtil> iface_util_;
-    bool is_valid_;
-    hidl_callback_util::HidlCallbackHandler<IWifiStaIfaceEventCallback>
-        event_cb_handler_;
-
-    DISALLOW_COPY_AND_ASSIGN(WifiStaIface);
-};
-
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // WIFI_STA_IFACE_H_
diff --git a/wifi/1.3/default/wifi_status_util.cpp b/wifi/1.3/default/wifi_status_util.cpp
deleted file mode 100644
index 0a5bb13..0000000
--- a/wifi/1.3/default/wifi_status_util.cpp
+++ /dev/null
@@ -1,106 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "wifi_status_util.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-
-std::string legacyErrorToString(legacy_hal::wifi_error error) {
-    switch (error) {
-        case legacy_hal::WIFI_SUCCESS:
-            return "SUCCESS";
-        case legacy_hal::WIFI_ERROR_UNINITIALIZED:
-            return "UNINITIALIZED";
-        case legacy_hal::WIFI_ERROR_NOT_AVAILABLE:
-            return "NOT_AVAILABLE";
-        case legacy_hal::WIFI_ERROR_NOT_SUPPORTED:
-            return "NOT_SUPPORTED";
-        case legacy_hal::WIFI_ERROR_INVALID_ARGS:
-            return "INVALID_ARGS";
-        case legacy_hal::WIFI_ERROR_INVALID_REQUEST_ID:
-            return "INVALID_REQUEST_ID";
-        case legacy_hal::WIFI_ERROR_TIMED_OUT:
-            return "TIMED_OUT";
-        case legacy_hal::WIFI_ERROR_TOO_MANY_REQUESTS:
-            return "TOO_MANY_REQUESTS";
-        case legacy_hal::WIFI_ERROR_OUT_OF_MEMORY:
-            return "OUT_OF_MEMORY";
-        case legacy_hal::WIFI_ERROR_BUSY:
-            return "BUSY";
-        case legacy_hal::WIFI_ERROR_UNKNOWN:
-            return "UNKNOWN";
-    }
-}
-
-WifiStatus createWifiStatus(WifiStatusCode code,
-                            const std::string& description) {
-    return {code, description};
-}
-
-WifiStatus createWifiStatus(WifiStatusCode code) {
-    return createWifiStatus(code, "");
-}
-
-WifiStatus createWifiStatusFromLegacyError(legacy_hal::wifi_error error,
-                                           const std::string& desc) {
-    switch (error) {
-        case legacy_hal::WIFI_ERROR_UNINITIALIZED:
-        case legacy_hal::WIFI_ERROR_NOT_AVAILABLE:
-            return createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE, desc);
-
-        case legacy_hal::WIFI_ERROR_NOT_SUPPORTED:
-            return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED, desc);
-
-        case legacy_hal::WIFI_ERROR_INVALID_ARGS:
-        case legacy_hal::WIFI_ERROR_INVALID_REQUEST_ID:
-            return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS, desc);
-
-        case legacy_hal::WIFI_ERROR_TIMED_OUT:
-            return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN,
-                                    desc + ", timed out");
-
-        case legacy_hal::WIFI_ERROR_TOO_MANY_REQUESTS:
-            return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN,
-                                    desc + ", too many requests");
-
-        case legacy_hal::WIFI_ERROR_OUT_OF_MEMORY:
-            return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN,
-                                    desc + ", out of memory");
-
-        case legacy_hal::WIFI_ERROR_BUSY:
-            return createWifiStatus(WifiStatusCode::ERROR_BUSY);
-
-        case legacy_hal::WIFI_ERROR_NONE:
-            return createWifiStatus(WifiStatusCode::SUCCESS, desc);
-
-        case legacy_hal::WIFI_ERROR_UNKNOWN:
-            return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN, "unknown");
-    }
-}
-
-WifiStatus createWifiStatusFromLegacyError(legacy_hal::wifi_error error) {
-    return createWifiStatusFromLegacyError(error, "");
-}
-
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
diff --git a/wifi/1.3/default/wifi_status_util.h b/wifi/1.3/default/wifi_status_util.h
deleted file mode 100644
index bc8baa9..0000000
--- a/wifi/1.3/default/wifi_status_util.h
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
- * Copyright (C) 2016 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef WIFI_STATUS_UTIL_H_
-#define WIFI_STATUS_UTIL_H_
-
-#include <android/hardware/wifi/1.0/IWifi.h>
-
-#include "wifi_legacy_hal.h"
-
-namespace android {
-namespace hardware {
-namespace wifi {
-namespace V1_3 {
-namespace implementation {
-using namespace android::hardware::wifi::V1_0;
-
-std::string legacyErrorToString(legacy_hal::wifi_error error);
-WifiStatus createWifiStatus(WifiStatusCode code,
-                            const std::string& description);
-WifiStatus createWifiStatus(WifiStatusCode code);
-WifiStatus createWifiStatusFromLegacyError(legacy_hal::wifi_error error,
-                                           const std::string& description);
-WifiStatus createWifiStatusFromLegacyError(legacy_hal::wifi_error error);
-
-}  // namespace implementation
-}  // namespace V1_3
-}  // namespace wifi
-}  // namespace hardware
-}  // namespace android
-
-#endif  // WIFI_STATUS_UTIL_H_
diff --git a/wifi/1.3/vts/functional/Android.bp b/wifi/1.3/vts/functional/Android.bp
index 9ffda8b..fe9c791 100644
--- a/wifi/1.3/vts/functional/Android.bp
+++ b/wifi/1.3/vts/functional/Android.bp
@@ -30,4 +30,6 @@
         "android.hardware.wifi@1.3",
         "libwifi-system-iface"
     ],
+    disable_framework: true,
+    test_suites: ["general-tests", "vts-core"],
 }
diff --git a/wifi/1.3/vts/functional/VtsHalWifiV1_3TargetTest.cpp b/wifi/1.3/vts/functional/VtsHalWifiV1_3TargetTest.cpp
index faf426e..52c7a4a 100644
--- a/wifi/1.3/vts/functional/VtsHalWifiV1_3TargetTest.cpp
+++ b/wifi/1.3/vts/functional/VtsHalWifiV1_3TargetTest.cpp
@@ -14,37 +14,8 @@
  * limitations under the License.
  */
 
-#include <android-base/logging.h>
-#include <android/hardware/wifi/1.3/IWifi.h>
+#include <VtsHalHidlTargetTestEnvBase.h>
 
-#include "wifi_hidl_test_utils.h"
-
-using ::android::hardware::wifi::V1_3::IWifi;
-
-// Test environment for Wifi HIDL HAL.
-class WifiHidlEnvironment_1_3 : public WifiHidlEnvironment {
-   public:
-    // get the test environment singleton
-    static WifiHidlEnvironment_1_3* Instance() {
-        static WifiHidlEnvironment_1_3* instance = new WifiHidlEnvironment_1_3;
-        return instance;
-    }
-
-    virtual void registerTestServices() override {
-        registerTestService<android::hardware::wifi::V1_3::IWifi>();
-    }
-
-   private:
-    WifiHidlEnvironment_1_3() {}
-};
-
-WifiHidlEnvironment_1_3* gEnv = WifiHidlEnvironment_1_3::Instance();
-
-int main(int argc, char** argv) {
-    ::testing::AddGlobalTestEnvironment(gEnv);
-    ::testing::InitGoogleTest(&argc, argv);
-    gEnv->init(&argc, argv);
-    int status = RUN_ALL_TESTS();
-    LOG(INFO) << "Test result = " << status;
-    return status;
-}
+// TODO(b/143892896): Remove this file after wifi_hidl_test_utils.cpp is
+// updated.
+::testing::VtsHalHidlTargetTestEnvBase* gEnv = nullptr;
\ No newline at end of file
diff --git a/wifi/1.3/vts/functional/wifi_chip_hidl_test.cpp b/wifi/1.3/vts/functional/wifi_chip_hidl_test.cpp
index d980fcb..e99b34a 100644
--- a/wifi/1.3/vts/functional/wifi_chip_hidl_test.cpp
+++ b/wifi/1.3/vts/functional/wifi_chip_hidl_test.cpp
@@ -16,9 +16,11 @@
 
 #include <android-base/logging.h>
 
+#include <android/hardware/wifi/1.3/IWifi.h>
 #include <android/hardware/wifi/1.3/IWifiChip.h>
-
-#include <VtsHalHidlTargetTestBase.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 
 #include "wifi_hidl_call_util.h"
 #include "wifi_hidl_test_utils.h"
@@ -39,14 +41,17 @@
 /**
  * Fixture to use for all Wifi chip HIDL interface tests.
  */
-class WifiChipHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+class WifiChipHidlTest : public ::testing::TestWithParam<std::string> {
    public:
     virtual void SetUp() override {
-        wifi_chip_ = IWifiChip::castFrom(getWifiChip());
+        // Make sure to start with a clean state
+        stopWifi(GetInstanceName());
+
+        wifi_chip_ = IWifiChip::castFrom(getWifiChip(GetInstanceName()));
         ASSERT_NE(nullptr, wifi_chip_.get());
     }
 
-    virtual void TearDown() override { stopWifi(); }
+    virtual void TearDown() override { stopWifi(GetInstanceName()); }
 
    protected:
     // Helper function to configure the Chip in one of the supported modes.
@@ -70,6 +75,9 @@
     }
 
     sp<IWifiChip> wifi_chip_;
+
+   private:
+    std::string GetInstanceName() { return GetParam(); }
 };
 
 /*
@@ -77,7 +85,7 @@
  * This test case tests the setLatencyMode() API with
  * Latency mode NORMAL
  */
-TEST_F(WifiChipHidlTest, SetLatencyMode_normal) {
+TEST_P(WifiChipHidlTest, SetLatencyMode_normal) {
     uint32_t caps = configureChipForStaIfaceAndGetCapabilities();
     const auto& status =
         HIDL_INVOKE(wifi_chip_, setLatencyMode, kLatencyModeNormal);
@@ -92,7 +100,7 @@
  * SetLatencyMode_low
  * This test case tests the setLatencyMode() API with Latency mode LOW
  */
-TEST_F(WifiChipHidlTest, SetLatencyMode_low) {
+TEST_P(WifiChipHidlTest, SetLatencyMode_low) {
     uint32_t caps = configureChipForStaIfaceAndGetCapabilities();
     const auto& status =
         HIDL_INVOKE(wifi_chip_, setLatencyMode, kLatencyModeLow);
@@ -106,7 +114,7 @@
 /*
  * GetCapabilities_1_3
  */
-TEST_F(WifiChipHidlTest, GetCapabilities_1_3) {
+TEST_P(WifiChipHidlTest, GetCapabilities_1_3) {
     configureChipForIfaceType(IfaceType::STA, true);
     const auto& status_and_caps = HIDL_INVOKE(wifi_chip_, getCapabilities_1_3);
     if (status_and_caps.first.code != WifiStatusCode::SUCCESS) {
@@ -116,3 +124,9 @@
     }
     EXPECT_NE(0u, status_and_caps.second);
 }
+
+INSTANTIATE_TEST_SUITE_P(
+    PerInstance, WifiChipHidlTest,
+    testing::ValuesIn(android::hardware::getAllHalInstanceNames(
+        ::android::hardware::wifi::V1_3::IWifi::descriptor)),
+    android::hardware::PrintInstanceNameToString);
diff --git a/wifi/1.3/vts/functional/wifi_sta_iface_hidl_test.cpp b/wifi/1.3/vts/functional/wifi_sta_iface_hidl_test.cpp
index 71e90ac..41d4ebb 100644
--- a/wifi/1.3/vts/functional/wifi_sta_iface_hidl_test.cpp
+++ b/wifi/1.3/vts/functional/wifi_sta_iface_hidl_test.cpp
@@ -19,28 +19,36 @@
 
 #include <android-base/logging.h>
 
+#include <android/hardware/wifi/1.3/IWifi.h>
 #include <android/hardware/wifi/1.3/IWifiStaIface.h>
-
-#include <VtsHalHidlTargetTestBase.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 
 #include "wifi_hidl_call_util.h"
 #include "wifi_hidl_test_utils.h"
 
 using ::android::sp;
+using ::android::hardware::hidl_array;
+using ::android::hardware::wifi::V1_0::WifiStatus;
 using ::android::hardware::wifi::V1_0::WifiStatusCode;
 using ::android::hardware::wifi::V1_3::IWifiStaIface;
 
 /**
  * Fixture to use for all STA Iface HIDL interface tests.
  */
-class WifiStaIfaceHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+class WifiStaIfaceHidlTest : public ::testing::TestWithParam<std::string> {
    public:
     virtual void SetUp() override {
-        wifi_sta_iface_ = IWifiStaIface::castFrom(getWifiStaIface());
+        // Make sure to start with a clean state
+        stopWifi(GetInstanceName());
+
+        wifi_sta_iface_ =
+            IWifiStaIface::castFrom(getWifiStaIface(GetInstanceName()));
         ASSERT_NE(nullptr, wifi_sta_iface_.get());
     }
 
-    virtual void TearDown() override { stopWifi(); }
+    virtual void TearDown() override { stopWifi(GetInstanceName()); }
 
    protected:
     bool isCapabilitySupported(IWifiStaIface::StaIfaceCapabilityMask cap_mask) {
@@ -51,6 +59,9 @@
     }
 
     sp<IWifiStaIface> wifi_sta_iface_;
+
+   private:
+    std::string GetInstanceName() { return GetParam(); }
 };
 
 /*
@@ -58,15 +69,12 @@
  * Ensures that calls to get factory MAC address will retrieve a non-zero MAC
  * and return a success status code.
  */
-TEST_F(WifiStaIfaceHidlTest, GetFactoryMacAddress) {
-    const auto& status_and_mac =
+TEST_P(WifiStaIfaceHidlTest, GetFactoryMacAddress) {
+    std::pair<WifiStatus, hidl_array<uint8_t, 6> > status_and_mac =
         HIDL_INVOKE(wifi_sta_iface_, getFactoryMacAddress);
     EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_mac.first.code);
-    const int num_elements = sizeof(status_and_mac.second) / sizeof(uint8_t);
-    EXPECT_EQ(6, num_elements);
-    for (int i = 0; i < num_elements; i++) {
-        EXPECT_NE(0, status_and_mac.second[i]);
-    }
+    hidl_array<uint8_t, 6> all_zero{};
+    EXPECT_NE(all_zero, status_and_mac.second);
 }
 
 /*
@@ -74,7 +82,7 @@
  * Ensures that calls to get link layer stats V1_3 will retrieve a non-empty
  * StaLinkLayerStats after link layer stats collection is enabled.
  */
-TEST_F(WifiStaIfaceHidlTest, GetLinkLayerStats_1_3) {
+TEST_P(WifiStaIfaceHidlTest, GetLinkLayerStats_1_3) {
     if (!isCapabilitySupported(
             IWifiStaIface::StaIfaceCapabilityMask::LINK_LAYER_STATS)) {
         // No-op if link layer stats is not supported.
@@ -95,3 +103,9 @@
         WifiStatusCode::SUCCESS,
         HIDL_INVOKE(wifi_sta_iface_, disableLinkLayerStatsCollection).code);
 }
+
+INSTANTIATE_TEST_SUITE_P(
+    PerInstance, WifiStaIfaceHidlTest,
+    testing::ValuesIn(android::hardware::getAllHalInstanceNames(
+        ::android::hardware::wifi::V1_3::IWifi::descriptor)),
+    android::hardware::PrintInstanceNameToString);
diff --git a/wifi/1.4/Android.bp b/wifi/1.4/Android.bp
new file mode 100644
index 0000000..3b94619
--- /dev/null
+++ b/wifi/1.4/Android.bp
@@ -0,0 +1,27 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.wifi@1.4",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "types.hal",
+        "IWifi.hal",
+        "IWifiApIface.hal",
+        "IWifiChip.hal",
+        "IWifiChipEventCallback.hal",
+        "IWifiNanIface.hal",
+        "IWifiRttController.hal",
+        "IWifiRttControllerEventCallback.hal",
+    ],
+    interfaces: [
+        "android.hardware.wifi@1.0",
+        "android.hardware.wifi@1.1",
+        "android.hardware.wifi@1.2",
+        "android.hardware.wifi@1.3",
+        "android.hidl.base@1.0",
+    ],
+    gen_java: true,
+}
diff --git a/wifi/1.4/IWifi.hal b/wifi/1.4/IWifi.hal
new file mode 100644
index 0000000..765e09d
--- /dev/null
+++ b/wifi/1.4/IWifi.hal
@@ -0,0 +1,27 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi@1.4;
+
+import @1.3::IWifi;
+
+/**
+ * This is the root of the HAL module and is the interface returned when
+ * loading an implementation of the Wi-Fi HAL. There must be at most one
+ * module loaded in the system.
+ * IWifi.getChip() must return @1.2::IWifiChip
+ */
+interface IWifi extends @1.3::IWifi {};
diff --git a/wifi/1.4/IWifiApIface.hal b/wifi/1.4/IWifiApIface.hal
new file mode 100644
index 0000000..80c576d
--- /dev/null
+++ b/wifi/1.4/IWifiApIface.hal
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi@1.4;
+
+import @1.0::IWifiApIface;
+import @1.0::MacAddress;
+import @1.0::WifiStatus;
+
+/**
+ * Represents a network interface in AP mode.
+ *
+ * This can be obtained through @1.0::IWifiChip.getApIface() and casting
+ * IWifiApIface up to 1.4.
+ */
+interface IWifiApIface extends @1.0::IWifiApIface {
+    /**
+     * Changes the MAC address of the interface to the given MAC address.
+     *
+     * @param mac MAC address to change to.
+     * @return status WifiStatus of the operation.
+     *         Possible status codes:
+     *         |WifiStatusCode.SUCCESS|,
+     *         |WifiStatusCode.ERROR_WIFI_IFACE_INVALID|,
+     *         |WifiStatusCode.ERROR_UNKNOWN|
+     */
+    setMacAddress(MacAddress mac) generates (WifiStatus status);
+
+    /**
+     * Gets the factory MAC address of the interface.
+     *
+     * @return status WifiStatus of the operation
+     *         Possible status codes:
+     *         |WifiStatusCode.SUCCESS|,
+     *         |WifiStatusCode.ERROR_WIFI_IFACE_INVALID|,
+     *         |WifiStatusCode.ERROR_UNKNOWN|
+     * @return mac factory MAC address of the interface
+     */
+    getFactoryMacAddress() generates (WifiStatus status, MacAddress mac);
+};
diff --git a/wifi/1.4/IWifiChip.hal b/wifi/1.4/IWifiChip.hal
new file mode 100644
index 0000000..07f4a65
--- /dev/null
+++ b/wifi/1.4/IWifiChip.hal
@@ -0,0 +1,62 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi@1.4;
+
+import @1.0::WifiStatus;
+import @1.0::IWifiIface;
+import @1.3::IWifiChip;
+import IWifiChipEventCallback;
+import IWifiRttController;
+
+/**
+ * Interface that represents a chip that must be configured as a single unit.
+ */
+interface IWifiChip extends @1.3::IWifiChip {
+    /**
+     * Requests notifications of significant events on this chip. Multiple calls
+     * to this must register multiple callbacks each of which must receive all
+     * events.
+     *
+     * @param callback An instance of the |IWifiChipEventCallback| HIDL interface
+     *        object.
+     * @return status WifiStatus of the operation.
+     *         Possible status codes:
+     *         |WifiStatusCode.SUCCESS|,
+     *         |WifiStatusCode.ERROR_NOT_SUPPORTED|,
+     *         |WifiStatusCode.ERROR_WIFI_CHIP_INVALID|
+     */
+    registerEventCallback_1_4(IWifiChipEventCallback callback) generates (WifiStatus status);
+
+    /**
+     * Create a RTTController instance.
+     *
+     * RTT controller can be either:
+     * a) Bound to a specific iface by passing in the corresponding |IWifiIface|
+     * object in |iface| param, OR
+     * b) Let the implementation decide the iface to use for RTT operations by
+     * passing null in |iface| param.
+     *
+     * @param boundIface HIDL interface object representing the iface if
+     *        the responder must be bound to a specific iface, null otherwise.
+     * @return status WifiStatus of the operation.
+     *         Possible status codes:
+     *         |WifiStatusCode.SUCCESS|,
+     *         |WifiStatusCode.ERROR_WIFI_CHIP_INVALID|
+     */
+    createRttController_1_4(IWifiIface boundIface)
+        generates (WifiStatus status, IWifiRttController rtt);
+};
diff --git a/wifi/1.4/IWifiChipEventCallback.hal b/wifi/1.4/IWifiChipEventCallback.hal
new file mode 100644
index 0000000..9ead344
--- /dev/null
+++ b/wifi/1.4/IWifiChipEventCallback.hal
@@ -0,0 +1,69 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi@1.4;
+
+import @1.2::IWifiChipEventCallback;
+import WifiBand;
+
+/**
+ * Wifi chip event callbacks.
+ */
+interface IWifiChipEventCallback extends @1.2::IWifiChipEventCallback {
+    /**
+     * Struct describing the state of each hardware radio chain (hardware MAC)
+     * on the device.
+     */
+    struct RadioModeInfo {
+        /**
+         * Identifier for this radio chain. This is vendor dependent & used
+         * only for debugging purposes.
+         */
+        uint32_t radioId;
+
+        /**
+         * List of bands on which this radio chain is operating.
+         * Can be one of:
+         * a) WifiBand.BAND_24GHZ => 2.4Ghz.
+         * b) WifiBand.BAND_5GHZ => 5Ghz.
+         * c) WifiBand.BAND_24GHZ_5GHZ = 2.4Ghz + 5Ghz (Radio is time sharing
+         * across the 2 bands).
+         * d) WifiBand.BAND_6GHZ => 6Ghz.
+         * e) WifiBand.BAND_5GHZ_6GHZ => 5Ghz + 6Ghz (Radio is time sharing
+         * across the 2 bands).
+         * f) WifiBand.BAND_24GHZ_5GHZ_6GHZ => 2.4Ghz + 5Ghz + 6Ghz (Radio is
+         * time sharing across the 3 bands).
+         */
+        WifiBand bandInfo;
+
+        /**
+         * List of interfaces on this radio chain (hardware MAC).
+         */
+        vec<IfaceInfo> ifaceInfos;
+    };
+
+    /**
+     * Asynchronous callback indicating a radio mode change.
+     * Radio mode change could be a result of:
+     * a) Bringing up concurrent interfaces (For ex: STA + AP).
+     * b) Change in operating band of one of the concurrent interfaces (For ex:
+     * STA connection moved from 2.4G to 5G)
+     *
+     * @param radioModeInfos List of RadioModeInfo structures for each
+     * radio chain (hardware MAC) on the device.
+     */
+    oneway onRadioModeChange_1_4(vec<RadioModeInfo> radioModeInfos);
+};
diff --git a/wifi/1.4/IWifiNanIface.hal b/wifi/1.4/IWifiNanIface.hal
new file mode 100644
index 0000000..881d06c
--- /dev/null
+++ b/wifi/1.4/IWifiNanIface.hal
@@ -0,0 +1,78 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi@1.4;
+
+import @1.0::CommandIdShort;
+import @1.0::WifiStatus;
+import @1.2::IWifiNanIface;
+import @1.2::NanConfigRequestSupplemental;
+import NanConfigRequest;
+import NanEnableRequest;
+
+/**
+ * Interface used to represent a single NAN (Neighbour Aware Network) iface.
+ *
+ * References to "NAN Spec" are to the Wi-Fi Alliance "Wi-Fi Neighbor Awareness
+ * Networking (NAN) Technical Specification".
+ */
+interface IWifiNanIface extends @1.2::IWifiNanIface {
+    /**
+     * Enable NAN: configures and activates NAN clustering (does not start
+     * a discovery session or set up data-interfaces or data-paths). Use the
+     * |IWifiNanIface.configureRequest| method to change the configuration of an already enabled
+     * NAN interface.
+     * Asynchronous response is with |IWifiNanIfaceEventCallback.notifyEnableResponse|.
+     *
+     * Note: supersedes the @1.2::IWifiNanIface.enableRequest() method which is deprecated as of
+     * HAL version 1.4.
+     *
+     * @param cmdId command Id to use for this invocation.
+     * @param msg1 Instance of |NanEnableRequest|.
+     * @param msg2 Instance of |NanConfigRequestSupplemental|.
+     * @return status WifiStatus of the operation.
+     *         Possible status codes:
+     *         |WifiStatusCode.SUCCESS|,
+     *         |WifiStatusCode.ERROR_NOT_SUPPORTED|,
+     *         |WifiStatusCode.ERROR_WIFI_IFACE_INVALID|,
+     *         |WifiStatusCode.ERROR_INVALID_ARGS|,
+     *         |WifiStatusCode.ERROR_UNKNOWN|
+     */
+    enableRequest_1_4(CommandIdShort cmdId, NanEnableRequest msg1,
+        NanConfigRequestSupplemental msg2) generates (WifiStatus status);
+
+    /**
+     * Configure NAN: configures an existing NAN functionality (i.e. assumes
+     * |IWifiNanIface.enableRequest| already submitted and succeeded).
+     * Asynchronous response is with |IWifiNanIfaceEventCallback.notifyConfigResponse|.
+     *
+     * Note: supersedes the @1.2::IWifiNanIface.configRequest() method which is deprecated as of
+     * HAL version 1.4.
+     *
+     * @param cmdId command Id to use for this invocation.
+     * @param msg1 Instance of |NanConfigRequest|.
+     * @param msg1 Instance of |NanConfigRequestSupplemental|.
+     * @return status WifiStatus of the operation.
+     *         Possible status codes:
+     *         |WifiStatusCode.SUCCESS|,
+     *         |WifiStatusCode.ERROR_NOT_SUPPORTED|,
+     *         |WifiStatusCode.ERROR_WIFI_IFACE_INVALID|,
+     *         |WifiStatusCode.ERROR_INVALID_ARGS|,
+     *         |WifiStatusCode.ERROR_UNKNOWN|
+     */
+    configRequest_1_4(CommandIdShort cmdId, NanConfigRequest msg1,
+        NanConfigRequestSupplemental msg2) generates (WifiStatus status);
+};
diff --git a/wifi/1.4/IWifiRttController.hal b/wifi/1.4/IWifiRttController.hal
new file mode 100644
index 0000000..5c71975
--- /dev/null
+++ b/wifi/1.4/IWifiRttController.hal
@@ -0,0 +1,102 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi@1.4;
+
+import @1.0::IWifiRttController;
+import @1.0::CommandId;
+import @1.0::WifiChannelInfo;
+import @1.0::WifiStatus;
+import IWifiRttControllerEventCallback;
+
+/**
+ * Interface used to perform RTT(Round trip time) operations.
+ */
+interface IWifiRttController extends @1.0::IWifiRttController {
+    /**
+     * Requests notifications of significant events on this rtt controller.
+     * Multiple calls to this must register multiple callbacks each of which must
+     * receive all events.
+     *
+     * @param callback An instance of the |IWifiRttControllerEventCallback| HIDL
+     *        interface object.
+     * @return status WifiStatus of the operation.
+     *         Possible status codes:
+     *         |WifiStatusCode.SUCCESS|,
+     *         |WifiStatusCode.ERROR_WIFI_IFACE_INVALID|
+     */
+    registerEventCallback_1_4(IWifiRttControllerEventCallback callback)
+        generates (WifiStatus status);
+
+    /**
+     * API to request RTT measurement.
+     *
+     * @param cmdId command Id to use for this invocation.
+     * @param rttConfigs Vector of |RttConfig| parameters.
+     * @return status WifiStatus of the operation.
+     *         Possible status codes:
+     *         |WifiStatusCode.SUCCESS|,
+     *         |WifiStatusCode.ERROR_WIFI_RTT_CONTROLLER_INVALID|,
+     *         |WifiStatusCode.ERROR_INVALID_ARGS|,
+     *         |WifiStatusCode.ERROR_NOT_AVAILABLE|,
+     *         |WifiStatusCode.ERROR_UNKNOWN|
+     */
+    rangeRequest_1_4(CommandId cmdId, vec<RttConfig> rttConfigs) generates (WifiStatus status);
+
+    /**
+     * RTT capabilities of the device.
+     *
+     * @return status WifiStatus of the operation.
+     *         Possible status codes:
+     *         |WifiStatusCode.SUCCESS|,
+     *         |WifiStatusCode.ERROR_WIFI_RTT_CONTROLLER_INVALID|,
+     *         |WifiStatusCode.ERROR_UNKNOWN|
+     * @return capabilities Instance of |RttCapabilities|.
+     */
+    getCapabilities_1_4() generates (WifiStatus status, RttCapabilities capabilities);
+
+    /**
+     * Get RTT responder information e.g. WiFi channel to enable responder on.
+     *
+     * @return status WifiStatus of the operation.
+     *         Possible status codes:
+     *         |WifiStatusCode.SUCCESS|,
+     *         |WifiStatusCode.ERROR_WIFI_RTT_CONTROLLER_INVALID|,
+     *         |WifiStatusCode.ERROR_NOT_AVAILABLE|,
+     *         |WifiStatusCode.ERROR_UNKNOWN|
+     * @return info Instance of |RttResponderInfo|.
+     */
+    getResponderInfo_1_4() generates (WifiStatus status, RttResponder info);
+
+    /**
+     * Enable RTT responder mode.
+     *
+     * @param cmdId command Id to use for this invocation.
+     * @parm channelHint Hint of the channel information where RTT responder must
+     *       be enabled on.
+     * @param maxDurationInSeconds Timeout of responder mode.
+     * @param info Instance of |RttResponderInfo|.
+     * @return status WifiStatus of the operation.
+     *         Possible status codes:
+     *         |WifiStatusCode.SUCCESS|,
+     *         |WifiStatusCode.ERROR_WIFI_RTT_CONTROLLER_INVALID|,
+     *         |WifiStatusCode.ERROR_INVALID_ARGS|,
+     *         |WifiStatusCode.ERROR_NOT_AVAILABLE|,
+     *         |WifiStatusCode.ERROR_UNKNOWN|
+     */
+    enableResponder_1_4(CommandId cmdId, WifiChannelInfo channelHint,
+        uint32_t maxDurationInSeconds, RttResponder info) generates (WifiStatus status);
+};
diff --git a/wifi/1.4/IWifiRttControllerEventCallback.hal b/wifi/1.4/IWifiRttControllerEventCallback.hal
new file mode 100644
index 0000000..75de3d4
--- /dev/null
+++ b/wifi/1.4/IWifiRttControllerEventCallback.hal
@@ -0,0 +1,33 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi@1.4;
+
+import @1.0::IWifiRttControllerEventCallback;
+import @1.0::CommandId;
+
+/**
+ * RTT Response and Event Callbacks.
+ */
+interface IWifiRttControllerEventCallback extends @1.0::IWifiRttControllerEventCallback {
+    /*
+     * Invoked when an RTT result is available.
+     *
+     * @param cmdId command Id corresponding to the original request.
+     * @param results Vector of |RttResult| instances.
+     */
+    oneway onResults_1_4(CommandId cmdId, vec<RttResult> results);
+};
diff --git a/wifi/1.4/default/Android.mk b/wifi/1.4/default/Android.mk
new file mode 100644
index 0000000..ab76ff6
--- /dev/null
+++ b/wifi/1.4/default/Android.mk
@@ -0,0 +1,174 @@
+# Copyright (C) 2016 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+LOCAL_PATH := $(call my-dir)
+
+###
+### android.hardware.wifi static library
+###
+include $(CLEAR_VARS)
+LOCAL_MODULE := android.hardware.wifi@1.0-service-lib
+LOCAL_MODULE_RELATIVE_PATH := hw
+LOCAL_PROPRIETARY_MODULE := true
+LOCAL_CPPFLAGS := -Wall -Werror -Wextra
+ifdef WIFI_HAL_INTERFACE_COMBINATIONS
+LOCAL_CPPFLAGS += -DWIFI_HAL_INTERFACE_COMBINATIONS="$(WIFI_HAL_INTERFACE_COMBINATIONS)"
+endif
+ifdef WIFI_HIDL_FEATURE_AWARE
+LOCAL_CPPFLAGS += -DWIFI_HIDL_FEATURE_AWARE
+endif
+ifdef WIFI_HIDL_FEATURE_DUAL_INTERFACE
+LOCAL_CPPFLAGS += -DWIFI_HIDL_FEATURE_DUAL_INTERFACE
+endif
+ifdef WIFI_HIDL_FEATURE_DISABLE_AP
+LOCAL_CPPFLAGS += -DWIFI_HIDL_FEATURE_DISABLE_AP
+endif
+ifdef WIFI_HIDL_FEATURE_DISABLE_AP_MAC_RANDOMIZATION
+LOCAL_CPPFLAGS += -DWIFI_HIDL_FEATURE_DISABLE_AP_MAC_RANDOMIZATION
+endif
+# Allow implicit fallthroughs in wifi_legacy_hal.cpp until they are fixed.
+LOCAL_CFLAGS += -Wno-error=implicit-fallthrough
+LOCAL_SRC_FILES := \
+    hidl_struct_util.cpp \
+    hidl_sync_util.cpp \
+    ringbuffer.cpp \
+    wifi.cpp \
+    wifi_ap_iface.cpp \
+    wifi_chip.cpp \
+    wifi_feature_flags.cpp \
+    wifi_iface_util.cpp \
+    wifi_legacy_hal.cpp \
+    wifi_legacy_hal_stubs.cpp \
+    wifi_mode_controller.cpp \
+    wifi_nan_iface.cpp \
+    wifi_p2p_iface.cpp \
+    wifi_rtt_controller.cpp \
+    wifi_sta_iface.cpp \
+    wifi_status_util.cpp
+LOCAL_SHARED_LIBRARIES := \
+    libbase \
+    libcutils \
+    libhidlbase \
+    liblog \
+    libnl \
+    libutils \
+    libwifi-hal \
+    libwifi-system-iface \
+    android.hardware.wifi@1.0 \
+    android.hardware.wifi@1.1 \
+    android.hardware.wifi@1.2 \
+    android.hardware.wifi@1.3 \
+    android.hardware.wifi@1.4
+LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)
+include $(BUILD_STATIC_LIBRARY)
+
+###
+### android.hardware.wifi daemon
+###
+include $(CLEAR_VARS)
+LOCAL_MODULE := android.hardware.wifi@1.0-service
+LOCAL_VINTF_FRAGMENTS := android.hardware.wifi@1.0-service.xml
+LOCAL_MODULE_RELATIVE_PATH := hw
+LOCAL_PROPRIETARY_MODULE := true
+LOCAL_CPPFLAGS := -Wall -Werror -Wextra
+LOCAL_SRC_FILES := \
+    service.cpp
+LOCAL_SHARED_LIBRARIES := \
+    libbase \
+    libcutils \
+    libhidlbase \
+    liblog \
+    libnl \
+    libutils \
+    libwifi-hal \
+    libwifi-system-iface \
+    android.hardware.wifi@1.0 \
+    android.hardware.wifi@1.1 \
+    android.hardware.wifi@1.2 \
+    android.hardware.wifi@1.3 \
+    android.hardware.wifi@1.4
+LOCAL_STATIC_LIBRARIES := \
+    android.hardware.wifi@1.0-service-lib
+LOCAL_INIT_RC := android.hardware.wifi@1.0-service.rc
+include $(BUILD_EXECUTABLE)
+
+###
+### android.hardware.wifi daemon
+###
+include $(CLEAR_VARS)
+LOCAL_MODULE := android.hardware.wifi@1.0-service-lazy
+LOCAL_VINTF_FRAGMENTS := android.hardware.wifi@1.0-service.xml
+LOCAL_OVERRIDES_MODULES := android.hardware.wifi@1.0-service
+LOCAL_CFLAGS := -DLAZY_SERVICE
+LOCAL_MODULE_RELATIVE_PATH := hw
+LOCAL_PROPRIETARY_MODULE := true
+LOCAL_CPPFLAGS := -Wall -Werror -Wextra
+LOCAL_SRC_FILES := \
+    service.cpp
+LOCAL_SHARED_LIBRARIES := \
+    libbase \
+    libcutils \
+    libhidlbase \
+    liblog \
+    libnl \
+    libutils \
+    libwifi-hal \
+    libwifi-system-iface \
+    android.hardware.wifi@1.0 \
+    android.hardware.wifi@1.1 \
+    android.hardware.wifi@1.2 \
+    android.hardware.wifi@1.3 \
+    android.hardware.wifi@1.4
+LOCAL_STATIC_LIBRARIES := \
+    android.hardware.wifi@1.0-service-lib
+LOCAL_INIT_RC := android.hardware.wifi@1.0-service-lazy.rc
+include $(BUILD_EXECUTABLE)
+
+###
+### android.hardware.wifi unit tests.
+###
+include $(CLEAR_VARS)
+LOCAL_MODULE := android.hardware.wifi@1.0-service-tests
+LOCAL_PROPRIETARY_MODULE := true
+LOCAL_CPPFLAGS := -Wall -Werror -Wextra
+LOCAL_SRC_FILES := \
+    tests/hidl_struct_util_unit_tests.cpp \
+    tests/main.cpp \
+    tests/mock_interface_tool.cpp \
+    tests/mock_wifi_feature_flags.cpp \
+    tests/mock_wifi_iface_util.cpp \
+    tests/mock_wifi_legacy_hal.cpp \
+    tests/mock_wifi_mode_controller.cpp \
+    tests/ringbuffer_unit_tests.cpp \
+    tests/wifi_nan_iface_unit_tests.cpp \
+    tests/wifi_chip_unit_tests.cpp \
+    tests/wifi_iface_util_unit_tests.cpp
+LOCAL_STATIC_LIBRARIES := \
+    libgmock \
+    libgtest \
+    android.hardware.wifi@1.0-service-lib
+LOCAL_SHARED_LIBRARIES := \
+    libbase \
+    libcutils \
+    libhidlbase \
+    liblog \
+    libnl \
+    libutils \
+    libwifi-hal \
+    libwifi-system-iface \
+    android.hardware.wifi@1.0 \
+    android.hardware.wifi@1.1 \
+    android.hardware.wifi@1.2 \
+    android.hardware.wifi@1.3 \
+    android.hardware.wifi@1.4
+include $(BUILD_NATIVE_TEST)
diff --git a/wifi/1.3/default/OWNERS b/wifi/1.4/default/OWNERS
similarity index 100%
rename from wifi/1.3/default/OWNERS
rename to wifi/1.4/default/OWNERS
diff --git a/wifi/1.3/default/THREADING.README b/wifi/1.4/default/THREADING.README
similarity index 100%
rename from wifi/1.3/default/THREADING.README
rename to wifi/1.4/default/THREADING.README
diff --git a/wifi/1.3/default/android.hardware.wifi@1.0-service-lazy.rc b/wifi/1.4/default/android.hardware.wifi@1.0-service-lazy.rc
similarity index 100%
rename from wifi/1.3/default/android.hardware.wifi@1.0-service-lazy.rc
rename to wifi/1.4/default/android.hardware.wifi@1.0-service-lazy.rc
diff --git a/wifi/1.3/default/android.hardware.wifi@1.0-service.rc b/wifi/1.4/default/android.hardware.wifi@1.0-service.rc
similarity index 100%
rename from wifi/1.3/default/android.hardware.wifi@1.0-service.rc
rename to wifi/1.4/default/android.hardware.wifi@1.0-service.rc
diff --git a/wifi/1.4/default/android.hardware.wifi@1.0-service.xml b/wifi/1.4/default/android.hardware.wifi@1.0-service.xml
new file mode 100644
index 0000000..b5d25cd
--- /dev/null
+++ b/wifi/1.4/default/android.hardware.wifi@1.0-service.xml
@@ -0,0 +1,11 @@
+<manifest version="1.0" type="device">
+    <hal format="hidl">
+        <name>android.hardware.wifi</name>
+        <transport>hwbinder</transport>
+        <version>1.4</version>
+        <interface>
+            <name>IWifi</name>
+            <instance>default</instance>
+        </interface>
+    </hal>
+</manifest>
diff --git a/wifi/1.4/default/hidl_callback_util.h b/wifi/1.4/default/hidl_callback_util.h
new file mode 100644
index 0000000..fc601b8
--- /dev/null
+++ b/wifi/1.4/default/hidl_callback_util.h
@@ -0,0 +1,124 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef HIDL_CALLBACK_UTIL_H_
+#define HIDL_CALLBACK_UTIL_H_
+
+#include <set>
+
+#include <hidl/HidlSupport.h>
+
+namespace {
+// Type of callback invoked by the death handler.
+using on_death_cb_function = std::function<void(uint64_t)>;
+
+// Private class used to keep track of death of individual
+// callbacks stored in HidlCallbackHandler.
+template <typename CallbackType>
+class HidlDeathHandler : public android::hardware::hidl_death_recipient {
+   public:
+    HidlDeathHandler(const on_death_cb_function& user_cb_function)
+        : cb_function_(user_cb_function) {}
+    ~HidlDeathHandler() = default;
+
+    // Death notification for callbacks.
+    void serviceDied(
+        uint64_t cookie,
+        const android::wp<android::hidl::base::V1_0::IBase>& /* who */)
+        override {
+        cb_function_(cookie);
+    }
+
+   private:
+    on_death_cb_function cb_function_;
+
+    DISALLOW_COPY_AND_ASSIGN(HidlDeathHandler);
+};
+}  // namespace
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+namespace hidl_callback_util {
+template <typename CallbackType>
+// Provides a class to manage callbacks for the various HIDL interfaces and
+// handle the death of the process hosting each callback.
+class HidlCallbackHandler {
+   public:
+    HidlCallbackHandler()
+        : death_handler_(new HidlDeathHandler<CallbackType>(
+              std::bind(&HidlCallbackHandler::onObjectDeath, this,
+                        std::placeholders::_1))) {}
+    ~HidlCallbackHandler() = default;
+
+    bool addCallback(const sp<CallbackType>& cb) {
+        // TODO(b/33818800): Can't compare proxies yet. So, use the cookie
+        // (callback proxy's raw pointer) to track the death of individual
+        // clients.
+        uint64_t cookie = reinterpret_cast<uint64_t>(cb.get());
+        if (cb_set_.find(cb) != cb_set_.end()) {
+            LOG(WARNING) << "Duplicate death notification registration";
+            return true;
+        }
+        if (!cb->linkToDeath(death_handler_, cookie)) {
+            LOG(ERROR) << "Failed to register death notification";
+            return false;
+        }
+        cb_set_.insert(cb);
+        return true;
+    }
+
+    const std::set<android::sp<CallbackType>>& getCallbacks() {
+        return cb_set_;
+    }
+
+    // Death notification for callbacks.
+    void onObjectDeath(uint64_t cookie) {
+        CallbackType* cb = reinterpret_cast<CallbackType*>(cookie);
+        const auto& iter = cb_set_.find(cb);
+        if (iter == cb_set_.end()) {
+            LOG(ERROR) << "Unknown callback death notification received";
+            return;
+        }
+        cb_set_.erase(iter);
+        LOG(DEBUG) << "Dead callback removed from list";
+    }
+
+    void invalidate() {
+        for (const sp<CallbackType>& cb : cb_set_) {
+            if (!cb->unlinkToDeath(death_handler_)) {
+                LOG(ERROR) << "Failed to deregister death notification";
+            }
+        }
+        cb_set_.clear();
+    }
+
+   private:
+    std::set<sp<CallbackType>> cb_set_;
+    sp<HidlDeathHandler<CallbackType>> death_handler_;
+
+    DISALLOW_COPY_AND_ASSIGN(HidlCallbackHandler);
+};
+
+}  // namespace hidl_callback_util
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+#endif  // HIDL_CALLBACK_UTIL_H_
diff --git a/wifi/1.4/default/hidl_return_util.h b/wifi/1.4/default/hidl_return_util.h
new file mode 100644
index 0000000..99c7092
--- /dev/null
+++ b/wifi/1.4/default/hidl_return_util.h
@@ -0,0 +1,120 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef HIDL_RETURN_UTIL_H_
+#define HIDL_RETURN_UTIL_H_
+
+#include "hidl_sync_util.h"
+#include "wifi_status_util.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+namespace hidl_return_util {
+using namespace android::hardware::wifi::V1_0;
+
+/**
+ * These utility functions are used to invoke a method on the provided
+ * HIDL interface object.
+ * These functions checks if the provided HIDL interface object is valid.
+ * a) if valid, Invokes the corresponding internal implementation function of
+ * the HIDL method. It then invokes the HIDL continuation callback with
+ * the status and any returned values.
+ * b) if invalid, invokes the HIDL continuation callback with the
+ * provided error status and default values.
+ */
+// Use for HIDL methods which return only an instance of WifiStatus.
+template <typename ObjT, typename WorkFuncT, typename... Args>
+Return<void> validateAndCall(
+    ObjT* obj, WifiStatusCode status_code_if_invalid, WorkFuncT&& work,
+    const std::function<void(const WifiStatus&)>& hidl_cb, Args&&... args) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (obj->isValid()) {
+        hidl_cb((obj->*work)(std::forward<Args>(args)...));
+    } else {
+        hidl_cb(createWifiStatus(status_code_if_invalid));
+    }
+    return Void();
+}
+
+// Use for HIDL methods which return only an instance of WifiStatus.
+// This version passes the global lock acquired to the body of the method.
+// Note: Only used by IWifi::stop() currently.
+template <typename ObjT, typename WorkFuncT, typename... Args>
+Return<void> validateAndCallWithLock(
+    ObjT* obj, WifiStatusCode status_code_if_invalid, WorkFuncT&& work,
+    const std::function<void(const WifiStatus&)>& hidl_cb, Args&&... args) {
+    auto lock = hidl_sync_util::acquireGlobalLock();
+    if (obj->isValid()) {
+        hidl_cb((obj->*work)(&lock, std::forward<Args>(args)...));
+    } else {
+        hidl_cb(createWifiStatus(status_code_if_invalid));
+    }
+    return Void();
+}
+
+// Use for HIDL methods which return instance of WifiStatus and a single return
+// value.
+template <typename ObjT, typename WorkFuncT, typename ReturnT, typename... Args>
+Return<void> validateAndCall(
+    ObjT* obj, WifiStatusCode status_code_if_invalid, WorkFuncT&& work,
+    const std::function<void(const WifiStatus&, ReturnT)>& hidl_cb,
+    Args&&... args) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (obj->isValid()) {
+        const auto& ret_pair = (obj->*work)(std::forward<Args>(args)...);
+        const WifiStatus& status = std::get<0>(ret_pair);
+        const auto& ret_value = std::get<1>(ret_pair);
+        hidl_cb(status, ret_value);
+    } else {
+        hidl_cb(createWifiStatus(status_code_if_invalid),
+                typename std::remove_reference<ReturnT>::type());
+    }
+    return Void();
+}
+
+// Use for HIDL methods which return instance of WifiStatus and 2 return
+// values.
+template <typename ObjT, typename WorkFuncT, typename ReturnT1,
+          typename ReturnT2, typename... Args>
+Return<void> validateAndCall(
+    ObjT* obj, WifiStatusCode status_code_if_invalid, WorkFuncT&& work,
+    const std::function<void(const WifiStatus&, ReturnT1, ReturnT2)>& hidl_cb,
+    Args&&... args) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (obj->isValid()) {
+        const auto& ret_tuple = (obj->*work)(std::forward<Args>(args)...);
+        const WifiStatus& status = std::get<0>(ret_tuple);
+        const auto& ret_value1 = std::get<1>(ret_tuple);
+        const auto& ret_value2 = std::get<2>(ret_tuple);
+        hidl_cb(status, ret_value1, ret_value2);
+    } else {
+        hidl_cb(createWifiStatus(status_code_if_invalid),
+                typename std::remove_reference<ReturnT1>::type(),
+                typename std::remove_reference<ReturnT2>::type());
+    }
+    return Void();
+}
+
+}  // namespace hidl_return_util
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+#endif  // HIDL_RETURN_UTIL_H_
diff --git a/wifi/1.4/default/hidl_struct_util.cpp b/wifi/1.4/default/hidl_struct_util.cpp
new file mode 100644
index 0000000..4996e35
--- /dev/null
+++ b/wifi/1.4/default/hidl_struct_util.cpp
@@ -0,0 +1,2723 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <utils/SystemClock.h>
+
+#include "hidl_struct_util.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+namespace hidl_struct_util {
+
+WifiChannelWidthInMhz convertLegacyWifiChannelWidthToHidl(
+    legacy_hal::wifi_channel_width type);
+
+hidl_string safeConvertChar(const char* str, size_t max_len) {
+    const char* c = str;
+    size_t size = 0;
+    while (*c && (unsigned char)*c < 128 && size < max_len) {
+        ++size;
+        ++c;
+    }
+    return hidl_string(str, size);
+}
+
+IWifiChip::ChipCapabilityMask convertLegacyLoggerFeatureToHidlChipCapability(
+    uint32_t feature) {
+    using HidlChipCaps = IWifiChip::ChipCapabilityMask;
+    switch (feature) {
+        case legacy_hal::WIFI_LOGGER_MEMORY_DUMP_SUPPORTED:
+            return HidlChipCaps::DEBUG_MEMORY_FIRMWARE_DUMP;
+        case legacy_hal::WIFI_LOGGER_DRIVER_DUMP_SUPPORTED:
+            return HidlChipCaps::DEBUG_MEMORY_DRIVER_DUMP;
+        case legacy_hal::WIFI_LOGGER_CONNECT_EVENT_SUPPORTED:
+            return HidlChipCaps::DEBUG_RING_BUFFER_CONNECT_EVENT;
+        case legacy_hal::WIFI_LOGGER_POWER_EVENT_SUPPORTED:
+            return HidlChipCaps::DEBUG_RING_BUFFER_POWER_EVENT;
+        case legacy_hal::WIFI_LOGGER_WAKE_LOCK_SUPPORTED:
+            return HidlChipCaps::DEBUG_RING_BUFFER_WAKELOCK_EVENT;
+    };
+    CHECK(false) << "Unknown legacy feature: " << feature;
+    return {};
+}
+
+IWifiStaIface::StaIfaceCapabilityMask
+convertLegacyLoggerFeatureToHidlStaIfaceCapability(uint32_t feature) {
+    using HidlStaIfaceCaps = IWifiStaIface::StaIfaceCapabilityMask;
+    switch (feature) {
+        case legacy_hal::WIFI_LOGGER_PACKET_FATE_SUPPORTED:
+            return HidlStaIfaceCaps::DEBUG_PACKET_FATE;
+    };
+    CHECK(false) << "Unknown legacy feature: " << feature;
+    return {};
+}
+
+V1_3::IWifiChip::ChipCapabilityMask convertLegacyFeatureToHidlChipCapability(
+    uint32_t feature) {
+    using HidlChipCaps = V1_3::IWifiChip::ChipCapabilityMask;
+    switch (feature) {
+        case WIFI_FEATURE_SET_TX_POWER_LIMIT:
+            return HidlChipCaps::SET_TX_POWER_LIMIT;
+        case WIFI_FEATURE_USE_BODY_HEAD_SAR:
+            return HidlChipCaps::USE_BODY_HEAD_SAR;
+        case WIFI_FEATURE_D2D_RTT:
+            return HidlChipCaps::D2D_RTT;
+        case WIFI_FEATURE_D2AP_RTT:
+            return HidlChipCaps::D2AP_RTT;
+        case WIFI_FEATURE_SET_LATENCY_MODE:
+            return HidlChipCaps::SET_LATENCY_MODE;
+        case WIFI_FEATURE_P2P_RAND_MAC:
+            return HidlChipCaps::P2P_RAND_MAC;
+    };
+    CHECK(false) << "Unknown legacy feature: " << feature;
+    return {};
+}
+
+IWifiStaIface::StaIfaceCapabilityMask
+convertLegacyFeatureToHidlStaIfaceCapability(uint64_t feature) {
+    using HidlStaIfaceCaps = IWifiStaIface::StaIfaceCapabilityMask;
+    switch (feature) {
+        case WIFI_FEATURE_GSCAN:
+            return HidlStaIfaceCaps::BACKGROUND_SCAN;
+        case WIFI_FEATURE_LINK_LAYER_STATS:
+            return HidlStaIfaceCaps::LINK_LAYER_STATS;
+        case WIFI_FEATURE_RSSI_MONITOR:
+            return HidlStaIfaceCaps::RSSI_MONITOR;
+        case WIFI_FEATURE_CONTROL_ROAMING:
+            return HidlStaIfaceCaps::CONTROL_ROAMING;
+        case WIFI_FEATURE_IE_WHITELIST:
+            return HidlStaIfaceCaps::PROBE_IE_WHITELIST;
+        case WIFI_FEATURE_SCAN_RAND:
+            return HidlStaIfaceCaps::SCAN_RAND;
+        case WIFI_FEATURE_INFRA_5G:
+            return HidlStaIfaceCaps::STA_5G;
+        case WIFI_FEATURE_HOTSPOT:
+            return HidlStaIfaceCaps::HOTSPOT;
+        case WIFI_FEATURE_PNO:
+            return HidlStaIfaceCaps::PNO;
+        case WIFI_FEATURE_TDLS:
+            return HidlStaIfaceCaps::TDLS;
+        case WIFI_FEATURE_TDLS_OFFCHANNEL:
+            return HidlStaIfaceCaps::TDLS_OFFCHANNEL;
+        case WIFI_FEATURE_CONFIG_NDO:
+            return HidlStaIfaceCaps::ND_OFFLOAD;
+        case WIFI_FEATURE_MKEEP_ALIVE:
+            return HidlStaIfaceCaps::KEEP_ALIVE;
+    };
+    CHECK(false) << "Unknown legacy feature: " << feature;
+    return {};
+}
+
+bool convertLegacyFeaturesToHidlChipCapabilities(
+    uint32_t legacy_feature_set, uint32_t legacy_logger_feature_set,
+    uint32_t* hidl_caps) {
+    if (!hidl_caps) {
+        return false;
+    }
+    *hidl_caps = {};
+    using HidlChipCaps = IWifiChip::ChipCapabilityMask;
+    for (const auto feature : {legacy_hal::WIFI_LOGGER_MEMORY_DUMP_SUPPORTED,
+                               legacy_hal::WIFI_LOGGER_DRIVER_DUMP_SUPPORTED,
+                               legacy_hal::WIFI_LOGGER_CONNECT_EVENT_SUPPORTED,
+                               legacy_hal::WIFI_LOGGER_POWER_EVENT_SUPPORTED,
+                               legacy_hal::WIFI_LOGGER_WAKE_LOCK_SUPPORTED}) {
+        if (feature & legacy_logger_feature_set) {
+            *hidl_caps |=
+                convertLegacyLoggerFeatureToHidlChipCapability(feature);
+        }
+    }
+    std::vector<uint32_t> features = {WIFI_FEATURE_SET_TX_POWER_LIMIT,
+                                      WIFI_FEATURE_USE_BODY_HEAD_SAR,
+                                      WIFI_FEATURE_D2D_RTT,
+                                      WIFI_FEATURE_D2AP_RTT,
+                                      WIFI_FEATURE_SET_LATENCY_MODE,
+                                      WIFI_FEATURE_P2P_RAND_MAC};
+    for (const auto feature : features) {
+        if (feature & legacy_feature_set) {
+            *hidl_caps |= convertLegacyFeatureToHidlChipCapability(feature);
+        }
+    }
+
+    // There are no flags for these 3 in the legacy feature set. Adding them to
+    // the set because all the current devices support it.
+    *hidl_caps |= HidlChipCaps::DEBUG_RING_BUFFER_VENDOR_DATA;
+    *hidl_caps |= HidlChipCaps::DEBUG_HOST_WAKE_REASON_STATS;
+    *hidl_caps |= HidlChipCaps::DEBUG_ERROR_ALERTS;
+    return true;
+}
+
+WifiDebugRingBufferFlags convertLegacyDebugRingBufferFlagsToHidl(
+    uint32_t flag) {
+    switch (flag) {
+        case WIFI_RING_BUFFER_FLAG_HAS_BINARY_ENTRIES:
+            return WifiDebugRingBufferFlags::HAS_BINARY_ENTRIES;
+        case WIFI_RING_BUFFER_FLAG_HAS_ASCII_ENTRIES:
+            return WifiDebugRingBufferFlags::HAS_ASCII_ENTRIES;
+    };
+    CHECK(false) << "Unknown legacy flag: " << flag;
+    return {};
+}
+
+bool convertLegacyDebugRingBufferStatusToHidl(
+    const legacy_hal::wifi_ring_buffer_status& legacy_status,
+    WifiDebugRingBufferStatus* hidl_status) {
+    if (!hidl_status) {
+        return false;
+    }
+    *hidl_status = {};
+    hidl_status->ringName =
+        safeConvertChar(reinterpret_cast<const char*>(legacy_status.name),
+                        sizeof(legacy_status.name));
+    hidl_status->flags = 0;
+    for (const auto flag : {WIFI_RING_BUFFER_FLAG_HAS_BINARY_ENTRIES,
+                            WIFI_RING_BUFFER_FLAG_HAS_ASCII_ENTRIES}) {
+        if (flag & legacy_status.flags) {
+            hidl_status->flags |= static_cast<
+                std::underlying_type<WifiDebugRingBufferFlags>::type>(
+                convertLegacyDebugRingBufferFlagsToHidl(flag));
+        }
+    }
+    hidl_status->ringId = legacy_status.ring_id;
+    hidl_status->sizeInBytes = legacy_status.ring_buffer_byte_size;
+    // Calculate free size of the ring the buffer. We don't need to send the
+    // exact read/write pointers that were there in the legacy HAL interface.
+    if (legacy_status.written_bytes >= legacy_status.read_bytes) {
+        hidl_status->freeSizeInBytes =
+            legacy_status.ring_buffer_byte_size -
+            (legacy_status.written_bytes - legacy_status.read_bytes);
+    } else {
+        hidl_status->freeSizeInBytes =
+            legacy_status.read_bytes - legacy_status.written_bytes;
+    }
+    hidl_status->verboseLevel = legacy_status.verbose_level;
+    return true;
+}
+
+bool convertLegacyVectorOfDebugRingBufferStatusToHidl(
+    const std::vector<legacy_hal::wifi_ring_buffer_status>& legacy_status_vec,
+    std::vector<WifiDebugRingBufferStatus>* hidl_status_vec) {
+    if (!hidl_status_vec) {
+        return false;
+    }
+    *hidl_status_vec = {};
+    for (const auto& legacy_status : legacy_status_vec) {
+        WifiDebugRingBufferStatus hidl_status;
+        if (!convertLegacyDebugRingBufferStatusToHidl(legacy_status,
+                                                      &hidl_status)) {
+            return false;
+        }
+        hidl_status_vec->push_back(hidl_status);
+    }
+    return true;
+}
+
+bool convertLegacyWakeReasonStatsToHidl(
+    const legacy_hal::WakeReasonStats& legacy_stats,
+    WifiDebugHostWakeReasonStats* hidl_stats) {
+    if (!hidl_stats) {
+        return false;
+    }
+    *hidl_stats = {};
+    hidl_stats->totalCmdEventWakeCnt =
+        legacy_stats.wake_reason_cnt.total_cmd_event_wake;
+    hidl_stats->cmdEventWakeCntPerType = legacy_stats.cmd_event_wake_cnt;
+    hidl_stats->totalDriverFwLocalWakeCnt =
+        legacy_stats.wake_reason_cnt.total_driver_fw_local_wake;
+    hidl_stats->driverFwLocalWakeCntPerType =
+        legacy_stats.driver_fw_local_wake_cnt;
+    hidl_stats->totalRxPacketWakeCnt =
+        legacy_stats.wake_reason_cnt.total_rx_data_wake;
+    hidl_stats->rxPktWakeDetails.rxUnicastCnt =
+        legacy_stats.wake_reason_cnt.rx_wake_details.rx_unicast_cnt;
+    hidl_stats->rxPktWakeDetails.rxMulticastCnt =
+        legacy_stats.wake_reason_cnt.rx_wake_details.rx_multicast_cnt;
+    hidl_stats->rxPktWakeDetails.rxBroadcastCnt =
+        legacy_stats.wake_reason_cnt.rx_wake_details.rx_broadcast_cnt;
+    hidl_stats->rxMulticastPkWakeDetails.ipv4RxMulticastAddrCnt =
+        legacy_stats.wake_reason_cnt.rx_multicast_wake_pkt_info
+            .ipv4_rx_multicast_addr_cnt;
+    hidl_stats->rxMulticastPkWakeDetails.ipv6RxMulticastAddrCnt =
+        legacy_stats.wake_reason_cnt.rx_multicast_wake_pkt_info
+            .ipv6_rx_multicast_addr_cnt;
+    hidl_stats->rxMulticastPkWakeDetails.otherRxMulticastAddrCnt =
+        legacy_stats.wake_reason_cnt.rx_multicast_wake_pkt_info
+            .other_rx_multicast_addr_cnt;
+    hidl_stats->rxIcmpPkWakeDetails.icmpPkt =
+        legacy_stats.wake_reason_cnt.rx_wake_pkt_classification_info.icmp_pkt;
+    hidl_stats->rxIcmpPkWakeDetails.icmp6Pkt =
+        legacy_stats.wake_reason_cnt.rx_wake_pkt_classification_info.icmp6_pkt;
+    hidl_stats->rxIcmpPkWakeDetails.icmp6Ra =
+        legacy_stats.wake_reason_cnt.rx_wake_pkt_classification_info.icmp6_ra;
+    hidl_stats->rxIcmpPkWakeDetails.icmp6Na =
+        legacy_stats.wake_reason_cnt.rx_wake_pkt_classification_info.icmp6_na;
+    hidl_stats->rxIcmpPkWakeDetails.icmp6Ns =
+        legacy_stats.wake_reason_cnt.rx_wake_pkt_classification_info.icmp6_ns;
+    return true;
+}
+
+legacy_hal::wifi_power_scenario convertHidlTxPowerScenarioToLegacy(
+    V1_1::IWifiChip::TxPowerScenario hidl_scenario) {
+    switch (hidl_scenario) {
+        // This is the only supported scenario for V1_1
+        case V1_1::IWifiChip::TxPowerScenario::VOICE_CALL:
+            return legacy_hal::WIFI_POWER_SCENARIO_VOICE_CALL;
+    };
+    CHECK(false);
+}
+
+legacy_hal::wifi_power_scenario convertHidlTxPowerScenarioToLegacy_1_2(
+    V1_2::IWifiChip::TxPowerScenario hidl_scenario) {
+    switch (hidl_scenario) {
+        // This is the only supported scenario for V1_1
+        case V1_2::IWifiChip::TxPowerScenario::VOICE_CALL:
+            return legacy_hal::WIFI_POWER_SCENARIO_VOICE_CALL;
+        // Those are the supported scenarios for V1_2
+        case V1_2::IWifiChip::TxPowerScenario::ON_HEAD_CELL_OFF:
+            return legacy_hal::WIFI_POWER_SCENARIO_ON_HEAD_CELL_OFF;
+        case V1_2::IWifiChip::TxPowerScenario::ON_HEAD_CELL_ON:
+            return legacy_hal::WIFI_POWER_SCENARIO_ON_HEAD_CELL_ON;
+        case V1_2::IWifiChip::TxPowerScenario::ON_BODY_CELL_OFF:
+            return legacy_hal::WIFI_POWER_SCENARIO_ON_BODY_CELL_OFF;
+        case V1_2::IWifiChip::TxPowerScenario::ON_BODY_CELL_ON:
+            return legacy_hal::WIFI_POWER_SCENARIO_ON_BODY_CELL_ON;
+    };
+    CHECK(false);
+}
+
+legacy_hal::wifi_latency_mode convertHidlLatencyModeToLegacy(
+    V1_3::IWifiChip::LatencyMode hidl_latency_mode) {
+    switch (hidl_latency_mode) {
+        case V1_3::IWifiChip::LatencyMode::NORMAL:
+            return legacy_hal::WIFI_LATENCY_MODE_NORMAL;
+        case V1_3::IWifiChip::LatencyMode::LOW:
+            return legacy_hal::WIFI_LATENCY_MODE_LOW;
+    }
+    CHECK(false);
+}
+
+bool convertLegacyWifiMacInfoToHidl(
+    const legacy_hal::WifiMacInfo& legacy_mac_info,
+    IWifiChipEventCallback::RadioModeInfo* hidl_radio_mode_info) {
+    if (!hidl_radio_mode_info) {
+        return false;
+    }
+    *hidl_radio_mode_info = {};
+
+    hidl_radio_mode_info->radioId = legacy_mac_info.wlan_mac_id;
+    // Convert from bitmask of bands in the legacy HAL to enum value in
+    // the HIDL interface.
+    if (legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_6_0_BAND &&
+        legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_5_0_BAND &&
+        legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_2_4_BAND) {
+        hidl_radio_mode_info->bandInfo = WifiBand::BAND_24GHZ_5GHZ_6GHZ;
+    } else if (legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_6_0_BAND &&
+               legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_5_0_BAND) {
+        hidl_radio_mode_info->bandInfo = WifiBand::BAND_5GHZ_6GHZ;
+    } else if (legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_6_0_BAND) {
+        hidl_radio_mode_info->bandInfo = WifiBand::BAND_6GHZ;
+    } else if (legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_2_4_BAND &&
+               legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_5_0_BAND) {
+        hidl_radio_mode_info->bandInfo = WifiBand::BAND_24GHZ_5GHZ;
+    } else if (legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_2_4_BAND) {
+        hidl_radio_mode_info->bandInfo = WifiBand::BAND_24GHZ;
+    } else if (legacy_mac_info.mac_band & legacy_hal::WLAN_MAC_5_0_BAND) {
+        hidl_radio_mode_info->bandInfo = WifiBand::BAND_5GHZ;
+    } else {
+        hidl_radio_mode_info->bandInfo = WifiBand::BAND_UNSPECIFIED;
+    }
+    std::vector<V1_2::IWifiChipEventCallback::IfaceInfo> iface_info_vec;
+    for (const auto& legacy_iface_info : legacy_mac_info.iface_infos) {
+        V1_2::IWifiChipEventCallback::IfaceInfo iface_info;
+        iface_info.name = legacy_iface_info.name;
+        iface_info.channel = legacy_iface_info.channel;
+        iface_info_vec.push_back(iface_info);
+    }
+    hidl_radio_mode_info->ifaceInfos = iface_info_vec;
+    return true;
+}
+
+bool convertLegacyWifiMacInfosToHidl(
+    const std::vector<legacy_hal::WifiMacInfo>& legacy_mac_infos,
+    std::vector<IWifiChipEventCallback::RadioModeInfo>* hidl_radio_mode_infos) {
+    if (!hidl_radio_mode_infos) {
+        return false;
+    }
+    *hidl_radio_mode_infos = {};
+
+    for (const auto& legacy_mac_info : legacy_mac_infos) {
+        IWifiChipEventCallback::RadioModeInfo hidl_radio_mode_info;
+        if (!convertLegacyWifiMacInfoToHidl(legacy_mac_info,
+                                            &hidl_radio_mode_info)) {
+            return false;
+        }
+        hidl_radio_mode_infos->push_back(hidl_radio_mode_info);
+    }
+    return true;
+}
+
+bool convertLegacyFeaturesToHidlStaCapabilities(
+    uint64_t legacy_feature_set, uint32_t legacy_logger_feature_set,
+    uint32_t* hidl_caps) {
+    if (!hidl_caps) {
+        return false;
+    }
+    *hidl_caps = {};
+    using HidlStaIfaceCaps = IWifiStaIface::StaIfaceCapabilityMask;
+    for (const auto feature : {legacy_hal::WIFI_LOGGER_PACKET_FATE_SUPPORTED}) {
+        if (feature & legacy_logger_feature_set) {
+            *hidl_caps |=
+                convertLegacyLoggerFeatureToHidlStaIfaceCapability(feature);
+        }
+    }
+    for (const auto feature :
+         {WIFI_FEATURE_GSCAN, WIFI_FEATURE_LINK_LAYER_STATS,
+          WIFI_FEATURE_RSSI_MONITOR, WIFI_FEATURE_CONTROL_ROAMING,
+          WIFI_FEATURE_IE_WHITELIST, WIFI_FEATURE_SCAN_RAND,
+          WIFI_FEATURE_INFRA_5G, WIFI_FEATURE_HOTSPOT, WIFI_FEATURE_PNO,
+          WIFI_FEATURE_TDLS, WIFI_FEATURE_TDLS_OFFCHANNEL,
+          WIFI_FEATURE_CONFIG_NDO, WIFI_FEATURE_MKEEP_ALIVE}) {
+        if (feature & legacy_feature_set) {
+            *hidl_caps |= convertLegacyFeatureToHidlStaIfaceCapability(feature);
+        }
+    }
+    // There is no flag for this one in the legacy feature set. Adding it to the
+    // set because all the current devices support it.
+    *hidl_caps |= HidlStaIfaceCaps::APF;
+    return true;
+}
+
+bool convertLegacyApfCapabilitiesToHidl(
+    const legacy_hal::PacketFilterCapabilities& legacy_caps,
+    StaApfPacketFilterCapabilities* hidl_caps) {
+    if (!hidl_caps) {
+        return false;
+    }
+    *hidl_caps = {};
+    hidl_caps->version = legacy_caps.version;
+    hidl_caps->maxLength = legacy_caps.max_len;
+    return true;
+}
+
+uint8_t convertHidlGscanReportEventFlagToLegacy(
+    StaBackgroundScanBucketEventReportSchemeMask hidl_flag) {
+    using HidlFlag = StaBackgroundScanBucketEventReportSchemeMask;
+    switch (hidl_flag) {
+        case HidlFlag::EACH_SCAN:
+            return REPORT_EVENTS_EACH_SCAN;
+        case HidlFlag::FULL_RESULTS:
+            return REPORT_EVENTS_FULL_RESULTS;
+        case HidlFlag::NO_BATCH:
+            return REPORT_EVENTS_NO_BATCH;
+    };
+    CHECK(false);
+}
+
+StaScanDataFlagMask convertLegacyGscanDataFlagToHidl(uint8_t legacy_flag) {
+    switch (legacy_flag) {
+        case legacy_hal::WIFI_SCAN_FLAG_INTERRUPTED:
+            return StaScanDataFlagMask::INTERRUPTED;
+    };
+    CHECK(false) << "Unknown legacy flag: " << legacy_flag;
+    // To silence the compiler warning about reaching the end of non-void
+    // function.
+    return {};
+}
+
+bool convertLegacyGscanCapabilitiesToHidl(
+    const legacy_hal::wifi_gscan_capabilities& legacy_caps,
+    StaBackgroundScanCapabilities* hidl_caps) {
+    if (!hidl_caps) {
+        return false;
+    }
+    *hidl_caps = {};
+    hidl_caps->maxCacheSize = legacy_caps.max_scan_cache_size;
+    hidl_caps->maxBuckets = legacy_caps.max_scan_buckets;
+    hidl_caps->maxApCachePerScan = legacy_caps.max_ap_cache_per_scan;
+    hidl_caps->maxReportingThreshold = legacy_caps.max_scan_reporting_threshold;
+    return true;
+}
+
+legacy_hal::wifi_band convertHidlWifiBandToLegacy(V1_0::WifiBand band) {
+    switch (band) {
+        case V1_0::WifiBand::BAND_UNSPECIFIED:
+            return legacy_hal::WIFI_BAND_UNSPECIFIED;
+        case V1_0::WifiBand::BAND_24GHZ:
+            return legacy_hal::WIFI_BAND_BG;
+        case V1_0::WifiBand::BAND_5GHZ:
+            return legacy_hal::WIFI_BAND_A;
+        case V1_0::WifiBand::BAND_5GHZ_DFS:
+            return legacy_hal::WIFI_BAND_A_DFS;
+        case V1_0::WifiBand::BAND_5GHZ_WITH_DFS:
+            return legacy_hal::WIFI_BAND_A_WITH_DFS;
+        case V1_0::WifiBand::BAND_24GHZ_5GHZ:
+            return legacy_hal::WIFI_BAND_ABG;
+        case V1_0::WifiBand::BAND_24GHZ_5GHZ_WITH_DFS:
+            return legacy_hal::WIFI_BAND_ABG_WITH_DFS;
+    };
+    CHECK(false);
+}
+
+bool convertHidlGscanParamsToLegacy(
+    const StaBackgroundScanParameters& hidl_scan_params,
+    legacy_hal::wifi_scan_cmd_params* legacy_scan_params) {
+    if (!legacy_scan_params) {
+        return false;
+    }
+    *legacy_scan_params = {};
+    legacy_scan_params->base_period = hidl_scan_params.basePeriodInMs;
+    legacy_scan_params->max_ap_per_scan = hidl_scan_params.maxApPerScan;
+    legacy_scan_params->report_threshold_percent =
+        hidl_scan_params.reportThresholdPercent;
+    legacy_scan_params->report_threshold_num_scans =
+        hidl_scan_params.reportThresholdNumScans;
+    if (hidl_scan_params.buckets.size() > MAX_BUCKETS) {
+        return false;
+    }
+    legacy_scan_params->num_buckets = hidl_scan_params.buckets.size();
+    for (uint32_t bucket_idx = 0; bucket_idx < hidl_scan_params.buckets.size();
+         bucket_idx++) {
+        const StaBackgroundScanBucketParameters& hidl_bucket_spec =
+            hidl_scan_params.buckets[bucket_idx];
+        legacy_hal::wifi_scan_bucket_spec& legacy_bucket_spec =
+            legacy_scan_params->buckets[bucket_idx];
+        if (hidl_bucket_spec.bucketIdx >= MAX_BUCKETS) {
+            return false;
+        }
+        legacy_bucket_spec.bucket = hidl_bucket_spec.bucketIdx;
+        legacy_bucket_spec.band =
+            convertHidlWifiBandToLegacy(hidl_bucket_spec.band);
+        legacy_bucket_spec.period = hidl_bucket_spec.periodInMs;
+        legacy_bucket_spec.max_period =
+            hidl_bucket_spec.exponentialMaxPeriodInMs;
+        legacy_bucket_spec.base = hidl_bucket_spec.exponentialBase;
+        legacy_bucket_spec.step_count = hidl_bucket_spec.exponentialStepCount;
+        legacy_bucket_spec.report_events = 0;
+        using HidlFlag = StaBackgroundScanBucketEventReportSchemeMask;
+        for (const auto flag : {HidlFlag::EACH_SCAN, HidlFlag::FULL_RESULTS,
+                                HidlFlag::NO_BATCH}) {
+            if (hidl_bucket_spec.eventReportScheme &
+                static_cast<std::underlying_type<HidlFlag>::type>(flag)) {
+                legacy_bucket_spec.report_events |=
+                    convertHidlGscanReportEventFlagToLegacy(flag);
+            }
+        }
+        if (hidl_bucket_spec.frequencies.size() > MAX_CHANNELS) {
+            return false;
+        }
+        legacy_bucket_spec.num_channels = hidl_bucket_spec.frequencies.size();
+        for (uint32_t freq_idx = 0;
+             freq_idx < hidl_bucket_spec.frequencies.size(); freq_idx++) {
+            legacy_bucket_spec.channels[freq_idx].channel =
+                hidl_bucket_spec.frequencies[freq_idx];
+        }
+    }
+    return true;
+}
+
+bool convertLegacyIeToHidl(
+    const legacy_hal::wifi_information_element& legacy_ie,
+    WifiInformationElement* hidl_ie) {
+    if (!hidl_ie) {
+        return false;
+    }
+    *hidl_ie = {};
+    hidl_ie->id = legacy_ie.id;
+    hidl_ie->data =
+        std::vector<uint8_t>(legacy_ie.data, legacy_ie.data + legacy_ie.len);
+    return true;
+}
+
+bool convertLegacyIeBlobToHidl(const uint8_t* ie_blob, uint32_t ie_blob_len,
+                               std::vector<WifiInformationElement>* hidl_ies) {
+    if (!ie_blob || !hidl_ies) {
+        return false;
+    }
+    *hidl_ies = {};
+    const uint8_t* ies_begin = ie_blob;
+    const uint8_t* ies_end = ie_blob + ie_blob_len;
+    const uint8_t* next_ie = ies_begin;
+    using wifi_ie = legacy_hal::wifi_information_element;
+    constexpr size_t kIeHeaderLen = sizeof(wifi_ie);
+    // Each IE should atleast have the header (i.e |id| & |len| fields).
+    while (next_ie + kIeHeaderLen <= ies_end) {
+        const wifi_ie& legacy_ie = (*reinterpret_cast<const wifi_ie*>(next_ie));
+        uint32_t curr_ie_len = kIeHeaderLen + legacy_ie.len;
+        if (next_ie + curr_ie_len > ies_end) {
+            LOG(ERROR) << "Error parsing IE blob. Next IE: " << (void*)next_ie
+                       << ", Curr IE len: " << curr_ie_len
+                       << ", IEs End: " << (void*)ies_end;
+            break;
+        }
+        WifiInformationElement hidl_ie;
+        if (!convertLegacyIeToHidl(legacy_ie, &hidl_ie)) {
+            LOG(ERROR) << "Error converting IE. Id: " << legacy_ie.id
+                       << ", len: " << legacy_ie.len;
+            break;
+        }
+        hidl_ies->push_back(std::move(hidl_ie));
+        next_ie += curr_ie_len;
+    }
+    // Check if the blob has been fully consumed.
+    if (next_ie != ies_end) {
+        LOG(ERROR) << "Failed to fully parse IE blob. Next IE: "
+                   << (void*)next_ie << ", IEs End: " << (void*)ies_end;
+    }
+    return true;
+}
+
+bool convertLegacyGscanResultToHidl(
+    const legacy_hal::wifi_scan_result& legacy_scan_result, bool has_ie_data,
+    StaScanResult* hidl_scan_result) {
+    if (!hidl_scan_result) {
+        return false;
+    }
+    *hidl_scan_result = {};
+    hidl_scan_result->timeStampInUs = legacy_scan_result.ts;
+    hidl_scan_result->ssid = std::vector<uint8_t>(
+        legacy_scan_result.ssid,
+        legacy_scan_result.ssid + strnlen(legacy_scan_result.ssid,
+                                          sizeof(legacy_scan_result.ssid) - 1));
+    memcpy(hidl_scan_result->bssid.data(), legacy_scan_result.bssid,
+           hidl_scan_result->bssid.size());
+    hidl_scan_result->frequency = legacy_scan_result.channel;
+    hidl_scan_result->rssi = legacy_scan_result.rssi;
+    hidl_scan_result->beaconPeriodInMs = legacy_scan_result.beacon_period;
+    hidl_scan_result->capability = legacy_scan_result.capability;
+    if (has_ie_data) {
+        std::vector<WifiInformationElement> ies;
+        if (!convertLegacyIeBlobToHidl(
+                reinterpret_cast<const uint8_t*>(legacy_scan_result.ie_data),
+                legacy_scan_result.ie_length, &ies)) {
+            return false;
+        }
+        hidl_scan_result->informationElements = std::move(ies);
+    }
+    return true;
+}
+
+bool convertLegacyCachedGscanResultsToHidl(
+    const legacy_hal::wifi_cached_scan_results& legacy_cached_scan_result,
+    StaScanData* hidl_scan_data) {
+    if (!hidl_scan_data) {
+        return false;
+    }
+    *hidl_scan_data = {};
+    hidl_scan_data->flags = 0;
+    for (const auto flag : {legacy_hal::WIFI_SCAN_FLAG_INTERRUPTED}) {
+        if (legacy_cached_scan_result.flags & flag) {
+            hidl_scan_data->flags |=
+                static_cast<std::underlying_type<StaScanDataFlagMask>::type>(
+                    convertLegacyGscanDataFlagToHidl(flag));
+        }
+    }
+    hidl_scan_data->bucketsScanned = legacy_cached_scan_result.buckets_scanned;
+
+    CHECK(legacy_cached_scan_result.num_results >= 0 &&
+          legacy_cached_scan_result.num_results <= MAX_AP_CACHE_PER_SCAN);
+    std::vector<StaScanResult> hidl_scan_results;
+    for (int32_t result_idx = 0;
+         result_idx < legacy_cached_scan_result.num_results; result_idx++) {
+        StaScanResult hidl_scan_result;
+        if (!convertLegacyGscanResultToHidl(
+                legacy_cached_scan_result.results[result_idx], false,
+                &hidl_scan_result)) {
+            return false;
+        }
+        hidl_scan_results.push_back(hidl_scan_result);
+    }
+    hidl_scan_data->results = std::move(hidl_scan_results);
+    return true;
+}
+
+bool convertLegacyVectorOfCachedGscanResultsToHidl(
+    const std::vector<legacy_hal::wifi_cached_scan_results>&
+        legacy_cached_scan_results,
+    std::vector<StaScanData>* hidl_scan_datas) {
+    if (!hidl_scan_datas) {
+        return false;
+    }
+    *hidl_scan_datas = {};
+    for (const auto& legacy_cached_scan_result : legacy_cached_scan_results) {
+        StaScanData hidl_scan_data;
+        if (!convertLegacyCachedGscanResultsToHidl(legacy_cached_scan_result,
+                                                   &hidl_scan_data)) {
+            return false;
+        }
+        hidl_scan_datas->push_back(hidl_scan_data);
+    }
+    return true;
+}
+
+WifiDebugTxPacketFate convertLegacyDebugTxPacketFateToHidl(
+    legacy_hal::wifi_tx_packet_fate fate) {
+    switch (fate) {
+        case legacy_hal::TX_PKT_FATE_ACKED:
+            return WifiDebugTxPacketFate::ACKED;
+        case legacy_hal::TX_PKT_FATE_SENT:
+            return WifiDebugTxPacketFate::SENT;
+        case legacy_hal::TX_PKT_FATE_FW_QUEUED:
+            return WifiDebugTxPacketFate::FW_QUEUED;
+        case legacy_hal::TX_PKT_FATE_FW_DROP_INVALID:
+            return WifiDebugTxPacketFate::FW_DROP_INVALID;
+        case legacy_hal::TX_PKT_FATE_FW_DROP_NOBUFS:
+            return WifiDebugTxPacketFate::FW_DROP_NOBUFS;
+        case legacy_hal::TX_PKT_FATE_FW_DROP_OTHER:
+            return WifiDebugTxPacketFate::FW_DROP_OTHER;
+        case legacy_hal::TX_PKT_FATE_DRV_QUEUED:
+            return WifiDebugTxPacketFate::DRV_QUEUED;
+        case legacy_hal::TX_PKT_FATE_DRV_DROP_INVALID:
+            return WifiDebugTxPacketFate::DRV_DROP_INVALID;
+        case legacy_hal::TX_PKT_FATE_DRV_DROP_NOBUFS:
+            return WifiDebugTxPacketFate::DRV_DROP_NOBUFS;
+        case legacy_hal::TX_PKT_FATE_DRV_DROP_OTHER:
+            return WifiDebugTxPacketFate::DRV_DROP_OTHER;
+    };
+    CHECK(false) << "Unknown legacy fate type: " << fate;
+}
+
+WifiDebugRxPacketFate convertLegacyDebugRxPacketFateToHidl(
+    legacy_hal::wifi_rx_packet_fate fate) {
+    switch (fate) {
+        case legacy_hal::RX_PKT_FATE_SUCCESS:
+            return WifiDebugRxPacketFate::SUCCESS;
+        case legacy_hal::RX_PKT_FATE_FW_QUEUED:
+            return WifiDebugRxPacketFate::FW_QUEUED;
+        case legacy_hal::RX_PKT_FATE_FW_DROP_FILTER:
+            return WifiDebugRxPacketFate::FW_DROP_FILTER;
+        case legacy_hal::RX_PKT_FATE_FW_DROP_INVALID:
+            return WifiDebugRxPacketFate::FW_DROP_INVALID;
+        case legacy_hal::RX_PKT_FATE_FW_DROP_NOBUFS:
+            return WifiDebugRxPacketFate::FW_DROP_NOBUFS;
+        case legacy_hal::RX_PKT_FATE_FW_DROP_OTHER:
+            return WifiDebugRxPacketFate::FW_DROP_OTHER;
+        case legacy_hal::RX_PKT_FATE_DRV_QUEUED:
+            return WifiDebugRxPacketFate::DRV_QUEUED;
+        case legacy_hal::RX_PKT_FATE_DRV_DROP_FILTER:
+            return WifiDebugRxPacketFate::DRV_DROP_FILTER;
+        case legacy_hal::RX_PKT_FATE_DRV_DROP_INVALID:
+            return WifiDebugRxPacketFate::DRV_DROP_INVALID;
+        case legacy_hal::RX_PKT_FATE_DRV_DROP_NOBUFS:
+            return WifiDebugRxPacketFate::DRV_DROP_NOBUFS;
+        case legacy_hal::RX_PKT_FATE_DRV_DROP_OTHER:
+            return WifiDebugRxPacketFate::DRV_DROP_OTHER;
+    };
+    CHECK(false) << "Unknown legacy fate type: " << fate;
+}
+
+WifiDebugPacketFateFrameType convertLegacyDebugPacketFateFrameTypeToHidl(
+    legacy_hal::frame_type type) {
+    switch (type) {
+        case legacy_hal::FRAME_TYPE_UNKNOWN:
+            return WifiDebugPacketFateFrameType::UNKNOWN;
+        case legacy_hal::FRAME_TYPE_ETHERNET_II:
+            return WifiDebugPacketFateFrameType::ETHERNET_II;
+        case legacy_hal::FRAME_TYPE_80211_MGMT:
+            return WifiDebugPacketFateFrameType::MGMT_80211;
+    };
+    CHECK(false) << "Unknown legacy frame type: " << type;
+}
+
+bool convertLegacyDebugPacketFateFrameToHidl(
+    const legacy_hal::frame_info& legacy_frame,
+    WifiDebugPacketFateFrameInfo* hidl_frame) {
+    if (!hidl_frame) {
+        return false;
+    }
+    *hidl_frame = {};
+    hidl_frame->frameType =
+        convertLegacyDebugPacketFateFrameTypeToHidl(legacy_frame.payload_type);
+    hidl_frame->frameLen = legacy_frame.frame_len;
+    hidl_frame->driverTimestampUsec = legacy_frame.driver_timestamp_usec;
+    hidl_frame->firmwareTimestampUsec = legacy_frame.firmware_timestamp_usec;
+    const uint8_t* frame_begin = reinterpret_cast<const uint8_t*>(
+        legacy_frame.frame_content.ethernet_ii_bytes);
+    hidl_frame->frameContent =
+        std::vector<uint8_t>(frame_begin, frame_begin + legacy_frame.frame_len);
+    return true;
+}
+
+bool convertLegacyDebugTxPacketFateToHidl(
+    const legacy_hal::wifi_tx_report& legacy_fate,
+    WifiDebugTxPacketFateReport* hidl_fate) {
+    if (!hidl_fate) {
+        return false;
+    }
+    *hidl_fate = {};
+    hidl_fate->fate = convertLegacyDebugTxPacketFateToHidl(legacy_fate.fate);
+    return convertLegacyDebugPacketFateFrameToHidl(legacy_fate.frame_inf,
+                                                   &hidl_fate->frameInfo);
+}
+
+bool convertLegacyVectorOfDebugTxPacketFateToHidl(
+    const std::vector<legacy_hal::wifi_tx_report>& legacy_fates,
+    std::vector<WifiDebugTxPacketFateReport>* hidl_fates) {
+    if (!hidl_fates) {
+        return false;
+    }
+    *hidl_fates = {};
+    for (const auto& legacy_fate : legacy_fates) {
+        WifiDebugTxPacketFateReport hidl_fate;
+        if (!convertLegacyDebugTxPacketFateToHidl(legacy_fate, &hidl_fate)) {
+            return false;
+        }
+        hidl_fates->push_back(hidl_fate);
+    }
+    return true;
+}
+
+bool convertLegacyDebugRxPacketFateToHidl(
+    const legacy_hal::wifi_rx_report& legacy_fate,
+    WifiDebugRxPacketFateReport* hidl_fate) {
+    if (!hidl_fate) {
+        return false;
+    }
+    *hidl_fate = {};
+    hidl_fate->fate = convertLegacyDebugRxPacketFateToHidl(legacy_fate.fate);
+    return convertLegacyDebugPacketFateFrameToHidl(legacy_fate.frame_inf,
+                                                   &hidl_fate->frameInfo);
+}
+
+bool convertLegacyVectorOfDebugRxPacketFateToHidl(
+    const std::vector<legacy_hal::wifi_rx_report>& legacy_fates,
+    std::vector<WifiDebugRxPacketFateReport>* hidl_fates) {
+    if (!hidl_fates) {
+        return false;
+    }
+    *hidl_fates = {};
+    for (const auto& legacy_fate : legacy_fates) {
+        WifiDebugRxPacketFateReport hidl_fate;
+        if (!convertLegacyDebugRxPacketFateToHidl(legacy_fate, &hidl_fate)) {
+            return false;
+        }
+        hidl_fates->push_back(hidl_fate);
+    }
+    return true;
+}
+
+bool convertLegacyLinkLayerRadioStatsToHidl(
+    const legacy_hal::LinkLayerRadioStats& legacy_radio_stat,
+    V1_3::StaLinkLayerRadioStats* hidl_radio_stat) {
+    if (!hidl_radio_stat) {
+        return false;
+    }
+    *hidl_radio_stat = {};
+
+    hidl_radio_stat->V1_0.onTimeInMs = legacy_radio_stat.stats.on_time;
+    hidl_radio_stat->V1_0.txTimeInMs = legacy_radio_stat.stats.tx_time;
+    hidl_radio_stat->V1_0.rxTimeInMs = legacy_radio_stat.stats.rx_time;
+    hidl_radio_stat->V1_0.onTimeInMsForScan =
+        legacy_radio_stat.stats.on_time_scan;
+    hidl_radio_stat->V1_0.txTimeInMsPerLevel =
+        legacy_radio_stat.tx_time_per_levels;
+    hidl_radio_stat->onTimeInMsForNanScan = legacy_radio_stat.stats.on_time_nbd;
+    hidl_radio_stat->onTimeInMsForBgScan =
+        legacy_radio_stat.stats.on_time_gscan;
+    hidl_radio_stat->onTimeInMsForRoamScan =
+        legacy_radio_stat.stats.on_time_roam_scan;
+    hidl_radio_stat->onTimeInMsForPnoScan =
+        legacy_radio_stat.stats.on_time_pno_scan;
+    hidl_radio_stat->onTimeInMsForHs20Scan =
+        legacy_radio_stat.stats.on_time_hs20;
+
+    std::vector<V1_3::WifiChannelStats> hidl_channel_stats;
+
+    for (const auto& channel_stat : legacy_radio_stat.channel_stats) {
+        V1_3::WifiChannelStats hidl_channel_stat;
+        hidl_channel_stat.onTimeInMs = channel_stat.on_time;
+        hidl_channel_stat.ccaBusyTimeInMs = channel_stat.cca_busy_time;
+        /*
+         * TODO once b/119142899 is fixed,
+         * replace below code with convertLegacyWifiChannelInfoToHidl()
+         */
+        hidl_channel_stat.channel.width = WifiChannelWidthInMhz::WIDTH_20;
+        hidl_channel_stat.channel.centerFreq = channel_stat.channel.center_freq;
+        hidl_channel_stat.channel.centerFreq0 =
+            channel_stat.channel.center_freq0;
+        hidl_channel_stat.channel.centerFreq1 =
+            channel_stat.channel.center_freq1;
+        hidl_channel_stats.push_back(hidl_channel_stat);
+    }
+
+    hidl_radio_stat->channelStats = hidl_channel_stats;
+
+    return true;
+}
+
+bool convertLegacyLinkLayerStatsToHidl(
+    const legacy_hal::LinkLayerStats& legacy_stats,
+    V1_3::StaLinkLayerStats* hidl_stats) {
+    if (!hidl_stats) {
+        return false;
+    }
+    *hidl_stats = {};
+    // iface legacy_stats conversion.
+    hidl_stats->iface.beaconRx = legacy_stats.iface.beacon_rx;
+    hidl_stats->iface.avgRssiMgmt = legacy_stats.iface.rssi_mgmt;
+    hidl_stats->iface.wmeBePktStats.rxMpdu =
+        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].rx_mpdu;
+    hidl_stats->iface.wmeBePktStats.txMpdu =
+        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].tx_mpdu;
+    hidl_stats->iface.wmeBePktStats.lostMpdu =
+        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].mpdu_lost;
+    hidl_stats->iface.wmeBePktStats.retries =
+        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].retries;
+    hidl_stats->iface.wmeBkPktStats.rxMpdu =
+        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].rx_mpdu;
+    hidl_stats->iface.wmeBkPktStats.txMpdu =
+        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].tx_mpdu;
+    hidl_stats->iface.wmeBkPktStats.lostMpdu =
+        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].mpdu_lost;
+    hidl_stats->iface.wmeBkPktStats.retries =
+        legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].retries;
+    hidl_stats->iface.wmeViPktStats.rxMpdu =
+        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].rx_mpdu;
+    hidl_stats->iface.wmeViPktStats.txMpdu =
+        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].tx_mpdu;
+    hidl_stats->iface.wmeViPktStats.lostMpdu =
+        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].mpdu_lost;
+    hidl_stats->iface.wmeViPktStats.retries =
+        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].retries;
+    hidl_stats->iface.wmeVoPktStats.rxMpdu =
+        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].rx_mpdu;
+    hidl_stats->iface.wmeVoPktStats.txMpdu =
+        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].tx_mpdu;
+    hidl_stats->iface.wmeVoPktStats.lostMpdu =
+        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].mpdu_lost;
+    hidl_stats->iface.wmeVoPktStats.retries =
+        legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].retries;
+    // radio legacy_stats conversion.
+    std::vector<V1_3::StaLinkLayerRadioStats> hidl_radios_stats;
+    for (const auto& legacy_radio_stats : legacy_stats.radios) {
+        V1_3::StaLinkLayerRadioStats hidl_radio_stats;
+        if (!convertLegacyLinkLayerRadioStatsToHidl(legacy_radio_stats,
+                                                    &hidl_radio_stats)) {
+            return false;
+        }
+        hidl_radios_stats.push_back(hidl_radio_stats);
+    }
+    hidl_stats->radios = hidl_radios_stats;
+    // Timestamp in the HAL wrapper here since it's not provided in the legacy
+    // HAL API.
+    hidl_stats->timeStampInMs = uptimeMillis();
+    return true;
+}
+
+bool convertLegacyRoamingCapabilitiesToHidl(
+    const legacy_hal::wifi_roaming_capabilities& legacy_caps,
+    StaRoamingCapabilities* hidl_caps) {
+    if (!hidl_caps) {
+        return false;
+    }
+    *hidl_caps = {};
+    hidl_caps->maxBlacklistSize = legacy_caps.max_blacklist_size;
+    hidl_caps->maxWhitelistSize = legacy_caps.max_whitelist_size;
+    return true;
+}
+
+bool convertHidlRoamingConfigToLegacy(
+    const StaRoamingConfig& hidl_config,
+    legacy_hal::wifi_roaming_config* legacy_config) {
+    if (!legacy_config) {
+        return false;
+    }
+    *legacy_config = {};
+    if (hidl_config.bssidBlacklist.size() > MAX_BLACKLIST_BSSID ||
+        hidl_config.ssidWhitelist.size() > MAX_WHITELIST_SSID) {
+        return false;
+    }
+    legacy_config->num_blacklist_bssid = hidl_config.bssidBlacklist.size();
+    uint32_t i = 0;
+    for (const auto& bssid : hidl_config.bssidBlacklist) {
+        CHECK(bssid.size() == sizeof(legacy_hal::mac_addr));
+        memcpy(legacy_config->blacklist_bssid[i++], bssid.data(), bssid.size());
+    }
+    legacy_config->num_whitelist_ssid = hidl_config.ssidWhitelist.size();
+    i = 0;
+    for (const auto& ssid : hidl_config.ssidWhitelist) {
+        CHECK(ssid.size() <= sizeof(legacy_hal::ssid_t::ssid_str));
+        legacy_config->whitelist_ssid[i].length = ssid.size();
+        memcpy(legacy_config->whitelist_ssid[i].ssid_str, ssid.data(),
+               ssid.size());
+        i++;
+    }
+    return true;
+}
+
+legacy_hal::fw_roaming_state_t convertHidlRoamingStateToLegacy(
+    StaRoamingState state) {
+    switch (state) {
+        case StaRoamingState::ENABLED:
+            return legacy_hal::ROAMING_ENABLE;
+        case StaRoamingState::DISABLED:
+            return legacy_hal::ROAMING_DISABLE;
+    };
+    CHECK(false);
+}
+
+legacy_hal::NanMatchAlg convertHidlNanMatchAlgToLegacy(NanMatchAlg type) {
+    switch (type) {
+        case NanMatchAlg::MATCH_ONCE:
+            return legacy_hal::NAN_MATCH_ALG_MATCH_ONCE;
+        case NanMatchAlg::MATCH_CONTINUOUS:
+            return legacy_hal::NAN_MATCH_ALG_MATCH_CONTINUOUS;
+        case NanMatchAlg::MATCH_NEVER:
+            return legacy_hal::NAN_MATCH_ALG_MATCH_NEVER;
+    }
+    CHECK(false);
+}
+
+legacy_hal::NanPublishType convertHidlNanPublishTypeToLegacy(
+    NanPublishType type) {
+    switch (type) {
+        case NanPublishType::UNSOLICITED:
+            return legacy_hal::NAN_PUBLISH_TYPE_UNSOLICITED;
+        case NanPublishType::SOLICITED:
+            return legacy_hal::NAN_PUBLISH_TYPE_SOLICITED;
+        case NanPublishType::UNSOLICITED_SOLICITED:
+            return legacy_hal::NAN_PUBLISH_TYPE_UNSOLICITED_SOLICITED;
+    }
+    CHECK(false);
+}
+
+legacy_hal::NanTxType convertHidlNanTxTypeToLegacy(NanTxType type) {
+    switch (type) {
+        case NanTxType::BROADCAST:
+            return legacy_hal::NAN_TX_TYPE_BROADCAST;
+        case NanTxType::UNICAST:
+            return legacy_hal::NAN_TX_TYPE_UNICAST;
+    }
+    CHECK(false);
+}
+
+legacy_hal::NanSubscribeType convertHidlNanSubscribeTypeToLegacy(
+    NanSubscribeType type) {
+    switch (type) {
+        case NanSubscribeType::PASSIVE:
+            return legacy_hal::NAN_SUBSCRIBE_TYPE_PASSIVE;
+        case NanSubscribeType::ACTIVE:
+            return legacy_hal::NAN_SUBSCRIBE_TYPE_ACTIVE;
+    }
+    CHECK(false);
+}
+
+legacy_hal::NanSRFType convertHidlNanSrfTypeToLegacy(NanSrfType type) {
+    switch (type) {
+        case NanSrfType::BLOOM_FILTER:
+            return legacy_hal::NAN_SRF_ATTR_BLOOM_FILTER;
+        case NanSrfType::PARTIAL_MAC_ADDR:
+            return legacy_hal::NAN_SRF_ATTR_PARTIAL_MAC_ADDR;
+    }
+    CHECK(false);
+}
+
+legacy_hal::NanDataPathChannelCfg convertHidlNanDataPathChannelCfgToLegacy(
+    NanDataPathChannelCfg type) {
+    switch (type) {
+        case NanDataPathChannelCfg::CHANNEL_NOT_REQUESTED:
+            return legacy_hal::NAN_DP_CHANNEL_NOT_REQUESTED;
+        case NanDataPathChannelCfg::REQUEST_CHANNEL_SETUP:
+            return legacy_hal::NAN_DP_REQUEST_CHANNEL_SETUP;
+        case NanDataPathChannelCfg::FORCE_CHANNEL_SETUP:
+            return legacy_hal::NAN_DP_FORCE_CHANNEL_SETUP;
+    }
+    CHECK(false);
+}
+
+NanStatusType convertLegacyNanStatusTypeToHidl(legacy_hal::NanStatusType type) {
+    switch (type) {
+        case legacy_hal::NAN_STATUS_SUCCESS:
+            return NanStatusType::SUCCESS;
+        case legacy_hal::NAN_STATUS_INTERNAL_FAILURE:
+            return NanStatusType::INTERNAL_FAILURE;
+        case legacy_hal::NAN_STATUS_PROTOCOL_FAILURE:
+            return NanStatusType::PROTOCOL_FAILURE;
+        case legacy_hal::NAN_STATUS_INVALID_PUBLISH_SUBSCRIBE_ID:
+            return NanStatusType::INVALID_SESSION_ID;
+        case legacy_hal::NAN_STATUS_NO_RESOURCE_AVAILABLE:
+            return NanStatusType::NO_RESOURCES_AVAILABLE;
+        case legacy_hal::NAN_STATUS_INVALID_PARAM:
+            return NanStatusType::INVALID_ARGS;
+        case legacy_hal::NAN_STATUS_INVALID_REQUESTOR_INSTANCE_ID:
+            return NanStatusType::INVALID_PEER_ID;
+        case legacy_hal::NAN_STATUS_INVALID_NDP_ID:
+            return NanStatusType::INVALID_NDP_ID;
+        case legacy_hal::NAN_STATUS_NAN_NOT_ALLOWED:
+            return NanStatusType::NAN_NOT_ALLOWED;
+        case legacy_hal::NAN_STATUS_NO_OTA_ACK:
+            return NanStatusType::NO_OTA_ACK;
+        case legacy_hal::NAN_STATUS_ALREADY_ENABLED:
+            return NanStatusType::ALREADY_ENABLED;
+        case legacy_hal::NAN_STATUS_FOLLOWUP_QUEUE_FULL:
+            return NanStatusType::FOLLOWUP_TX_QUEUE_FULL;
+        case legacy_hal::NAN_STATUS_UNSUPPORTED_CONCURRENCY_NAN_DISABLED:
+            return NanStatusType::UNSUPPORTED_CONCURRENCY_NAN_DISABLED;
+    }
+    CHECK(false);
+}
+
+void convertToWifiNanStatus(legacy_hal::NanStatusType type, const char* str,
+                            size_t max_len, WifiNanStatus* wifiNanStatus) {
+    wifiNanStatus->status = convertLegacyNanStatusTypeToHidl(type);
+    wifiNanStatus->description = safeConvertChar(str, max_len);
+}
+
+bool convertHidlNanEnableRequestToLegacy(
+    const NanEnableRequest& hidl_request,
+    legacy_hal::NanEnableRequest* legacy_request) {
+    if (!legacy_request) {
+        LOG(ERROR)
+            << "convertHidlNanEnableRequestToLegacy: null legacy_request";
+        return false;
+    }
+    *legacy_request = {};
+
+    legacy_request->config_2dot4g_support = 1;
+    legacy_request->support_2dot4g_val =
+        hidl_request.operateInBand[(size_t)NanBandIndex::NAN_BAND_24GHZ];
+    legacy_request->config_support_5g = 1;
+    legacy_request->support_5g_val =
+        hidl_request.operateInBand[(size_t)NanBandIndex::NAN_BAND_5GHZ];
+    legacy_request->config_hop_count_limit = 1;
+    legacy_request->hop_count_limit_val = hidl_request.hopCountMax;
+    legacy_request->master_pref = hidl_request.configParams.masterPref;
+    legacy_request->discovery_indication_cfg = 0;
+    legacy_request->discovery_indication_cfg |=
+        hidl_request.configParams.disableDiscoveryAddressChangeIndication ? 0x1
+                                                                          : 0x0;
+    legacy_request->discovery_indication_cfg |=
+        hidl_request.configParams.disableStartedClusterIndication ? 0x2 : 0x0;
+    legacy_request->discovery_indication_cfg |=
+        hidl_request.configParams.disableJoinedClusterIndication ? 0x4 : 0x0;
+    legacy_request->config_sid_beacon = 1;
+    if (hidl_request.configParams.numberOfPublishServiceIdsInBeacon > 127) {
+        LOG(ERROR) << "convertHidlNanEnableRequestToLegacy: "
+                      "numberOfPublishServiceIdsInBeacon > 127";
+        return false;
+    }
+    legacy_request->sid_beacon_val =
+        (hidl_request.configParams.includePublishServiceIdsInBeacon ? 0x1
+                                                                    : 0x0) |
+        (hidl_request.configParams.numberOfPublishServiceIdsInBeacon << 1);
+    legacy_request->config_subscribe_sid_beacon = 1;
+    if (hidl_request.configParams.numberOfSubscribeServiceIdsInBeacon > 127) {
+        LOG(ERROR) << "convertHidlNanEnableRequestToLegacy: "
+                      "numberOfSubscribeServiceIdsInBeacon > 127";
+        return false;
+    }
+    legacy_request->subscribe_sid_beacon_val =
+        (hidl_request.configParams.includeSubscribeServiceIdsInBeacon ? 0x1
+                                                                      : 0x0) |
+        (hidl_request.configParams.numberOfSubscribeServiceIdsInBeacon << 1);
+    legacy_request->config_rssi_window_size = 1;
+    legacy_request->rssi_window_size_val =
+        hidl_request.configParams.rssiWindowSize;
+    legacy_request->config_disc_mac_addr_randomization = 1;
+    legacy_request->disc_mac_addr_rand_interval_sec =
+        hidl_request.configParams.macAddressRandomizationIntervalSec;
+    legacy_request->config_2dot4g_rssi_close = 1;
+    if (hidl_request.configParams.bandSpecificConfig.size() != 3) {
+        LOG(ERROR) << "convertHidlNanEnableRequestToLegacy: "
+                      "bandSpecificConfig.size() != 3";
+        return false;
+    }
+    legacy_request->rssi_close_2dot4g_val =
+        hidl_request.configParams
+            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
+            .rssiClose;
+    legacy_request->config_2dot4g_rssi_middle = 1;
+    legacy_request->rssi_middle_2dot4g_val =
+        hidl_request.configParams
+            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
+            .rssiMiddle;
+    legacy_request->config_2dot4g_rssi_proximity = 1;
+    legacy_request->rssi_proximity_2dot4g_val =
+        hidl_request.configParams
+            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
+            .rssiCloseProximity;
+    legacy_request->config_scan_params = 1;
+    legacy_request->scan_params_val
+        .dwell_time[legacy_hal::NAN_CHANNEL_24G_BAND] =
+        hidl_request.configParams
+            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
+            .dwellTimeMs;
+    legacy_request->scan_params_val
+        .scan_period[legacy_hal::NAN_CHANNEL_24G_BAND] =
+        hidl_request.configParams
+            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
+            .scanPeriodSec;
+    legacy_request->config_dw.config_2dot4g_dw_band =
+        hidl_request.configParams
+            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
+            .validDiscoveryWindowIntervalVal;
+    legacy_request->config_dw.dw_2dot4g_interval_val =
+        hidl_request.configParams
+            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
+            .discoveryWindowIntervalVal;
+    legacy_request->config_5g_rssi_close = 1;
+    legacy_request->rssi_close_5g_val =
+        hidl_request.configParams
+            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
+            .rssiClose;
+    legacy_request->config_5g_rssi_middle = 1;
+    legacy_request->rssi_middle_5g_val =
+        hidl_request.configParams
+            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
+            .rssiMiddle;
+    legacy_request->config_5g_rssi_close_proximity = 1;
+    legacy_request->rssi_close_proximity_5g_val =
+        hidl_request.configParams
+            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
+            .rssiCloseProximity;
+    legacy_request->scan_params_val
+        .dwell_time[legacy_hal::NAN_CHANNEL_5G_BAND_LOW] =
+        hidl_request.configParams
+            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
+            .dwellTimeMs;
+    legacy_request->scan_params_val
+        .scan_period[legacy_hal::NAN_CHANNEL_5G_BAND_LOW] =
+        hidl_request.configParams
+            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
+            .scanPeriodSec;
+    legacy_request->scan_params_val
+        .dwell_time[legacy_hal::NAN_CHANNEL_5G_BAND_HIGH] =
+        hidl_request.configParams
+            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
+            .dwellTimeMs;
+    legacy_request->scan_params_val
+        .scan_period[legacy_hal::NAN_CHANNEL_5G_BAND_HIGH] =
+        hidl_request.configParams
+            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
+            .scanPeriodSec;
+    legacy_request->config_dw.config_5g_dw_band =
+        hidl_request.configParams
+            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
+            .validDiscoveryWindowIntervalVal;
+    legacy_request->config_dw.dw_5g_interval_val =
+        hidl_request.configParams
+            .bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
+            .discoveryWindowIntervalVal;
+    if (hidl_request.debugConfigs.validClusterIdVals) {
+        legacy_request->cluster_low =
+            hidl_request.debugConfigs.clusterIdBottomRangeVal;
+        legacy_request->cluster_high =
+            hidl_request.debugConfigs.clusterIdTopRangeVal;
+    } else {  // need 'else' since not configurable in legacy HAL
+        legacy_request->cluster_low = 0x0000;
+        legacy_request->cluster_high = 0xFFFF;
+    }
+    legacy_request->config_intf_addr =
+        hidl_request.debugConfigs.validIntfAddrVal;
+    memcpy(legacy_request->intf_addr_val,
+           hidl_request.debugConfigs.intfAddrVal.data(), 6);
+    legacy_request->config_oui = hidl_request.debugConfigs.validOuiVal;
+    legacy_request->oui_val = hidl_request.debugConfigs.ouiVal;
+    legacy_request->config_random_factor_force =
+        hidl_request.debugConfigs.validRandomFactorForceVal;
+    legacy_request->random_factor_force_val =
+        hidl_request.debugConfigs.randomFactorForceVal;
+    legacy_request->config_hop_count_force =
+        hidl_request.debugConfigs.validHopCountForceVal;
+    legacy_request->hop_count_force_val =
+        hidl_request.debugConfigs.hopCountForceVal;
+    legacy_request->config_24g_channel =
+        hidl_request.debugConfigs.validDiscoveryChannelVal;
+    legacy_request->channel_24g_val =
+        hidl_request.debugConfigs
+            .discoveryChannelMhzVal[(size_t)NanBandIndex::NAN_BAND_24GHZ];
+    legacy_request->config_5g_channel =
+        hidl_request.debugConfigs.validDiscoveryChannelVal;
+    legacy_request->channel_5g_val =
+        hidl_request.debugConfigs
+            .discoveryChannelMhzVal[(size_t)NanBandIndex::NAN_BAND_5GHZ];
+    legacy_request->config_2dot4g_beacons =
+        hidl_request.debugConfigs.validUseBeaconsInBandVal;
+    legacy_request->beacon_2dot4g_val =
+        hidl_request.debugConfigs
+            .useBeaconsInBandVal[(size_t)NanBandIndex::NAN_BAND_24GHZ];
+    legacy_request->config_5g_beacons =
+        hidl_request.debugConfigs.validUseBeaconsInBandVal;
+    legacy_request->beacon_5g_val =
+        hidl_request.debugConfigs
+            .useBeaconsInBandVal[(size_t)NanBandIndex::NAN_BAND_5GHZ];
+    legacy_request->config_2dot4g_sdf =
+        hidl_request.debugConfigs.validUseSdfInBandVal;
+    legacy_request->sdf_2dot4g_val =
+        hidl_request.debugConfigs
+            .useSdfInBandVal[(size_t)NanBandIndex::NAN_BAND_24GHZ];
+    legacy_request->config_5g_sdf =
+        hidl_request.debugConfigs.validUseSdfInBandVal;
+    legacy_request->sdf_5g_val =
+        hidl_request.debugConfigs
+            .useSdfInBandVal[(size_t)NanBandIndex::NAN_BAND_5GHZ];
+
+    /* TODO: b/145609058
+     * Missing updates needed to legacy_hal::NanEnableRequest and conversion to
+     * it for 6GHz band */
+
+    return true;
+}
+
+bool convertHidlNanEnableRequest_1_4ToLegacy(
+    const NanEnableRequest& hidl_request1,
+    const V1_2::NanConfigRequestSupplemental& hidl_request2,
+    legacy_hal::NanEnableRequest* legacy_request) {
+    if (!legacy_request) {
+        LOG(ERROR)
+            << "convertHidlNanEnableRequest_1_4ToLegacy: null legacy_request";
+        return false;
+    }
+
+    *legacy_request = {};
+    if (!convertHidlNanEnableRequestToLegacy(hidl_request1, legacy_request)) {
+        return false;
+    }
+
+    legacy_request->config_discovery_beacon_int = 1;
+    legacy_request->discovery_beacon_interval =
+        hidl_request2.discoveryBeaconIntervalMs;
+    legacy_request->config_nss = 1;
+    legacy_request->nss = hidl_request2.numberOfSpatialStreamsInDiscovery;
+    legacy_request->config_dw_early_termination = 1;
+    legacy_request->enable_dw_termination =
+        hidl_request2.enableDiscoveryWindowEarlyTermination;
+    legacy_request->config_enable_ranging = 1;
+    legacy_request->enable_ranging = hidl_request2.enableRanging;
+
+    return true;
+}
+
+bool convertHidlNanPublishRequestToLegacy(
+    const NanPublishRequest& hidl_request,
+    legacy_hal::NanPublishRequest* legacy_request) {
+    if (!legacy_request) {
+        LOG(ERROR)
+            << "convertHidlNanPublishRequestToLegacy: null legacy_request";
+        return false;
+    }
+    *legacy_request = {};
+
+    legacy_request->publish_id = hidl_request.baseConfigs.sessionId;
+    legacy_request->ttl = hidl_request.baseConfigs.ttlSec;
+    legacy_request->period = hidl_request.baseConfigs.discoveryWindowPeriod;
+    legacy_request->publish_count = hidl_request.baseConfigs.discoveryCount;
+    legacy_request->service_name_len =
+        hidl_request.baseConfigs.serviceName.size();
+    if (legacy_request->service_name_len > NAN_MAX_SERVICE_NAME_LEN) {
+        LOG(ERROR) << "convertHidlNanPublishRequestToLegacy: service_name_len "
+                      "too large";
+        return false;
+    }
+    memcpy(legacy_request->service_name,
+           hidl_request.baseConfigs.serviceName.data(),
+           legacy_request->service_name_len);
+    legacy_request->publish_match_indicator = convertHidlNanMatchAlgToLegacy(
+        hidl_request.baseConfigs.discoveryMatchIndicator);
+    legacy_request->service_specific_info_len =
+        hidl_request.baseConfigs.serviceSpecificInfo.size();
+    if (legacy_request->service_specific_info_len >
+        NAN_MAX_SERVICE_SPECIFIC_INFO_LEN) {
+        LOG(ERROR) << "convertHidlNanPublishRequestToLegacy: "
+                      "service_specific_info_len too large";
+        return false;
+    }
+    memcpy(legacy_request->service_specific_info,
+           hidl_request.baseConfigs.serviceSpecificInfo.data(),
+           legacy_request->service_specific_info_len);
+    legacy_request->sdea_service_specific_info_len =
+        hidl_request.baseConfigs.extendedServiceSpecificInfo.size();
+    if (legacy_request->sdea_service_specific_info_len >
+        NAN_MAX_SDEA_SERVICE_SPECIFIC_INFO_LEN) {
+        LOG(ERROR) << "convertHidlNanPublishRequestToLegacy: "
+                      "sdea_service_specific_info_len too large";
+        return false;
+    }
+    memcpy(legacy_request->sdea_service_specific_info,
+           hidl_request.baseConfigs.extendedServiceSpecificInfo.data(),
+           legacy_request->sdea_service_specific_info_len);
+    legacy_request->rx_match_filter_len =
+        hidl_request.baseConfigs.rxMatchFilter.size();
+    if (legacy_request->rx_match_filter_len > NAN_MAX_MATCH_FILTER_LEN) {
+        LOG(ERROR) << "convertHidlNanPublishRequestToLegacy: "
+                      "rx_match_filter_len too large";
+        return false;
+    }
+    memcpy(legacy_request->rx_match_filter,
+           hidl_request.baseConfigs.rxMatchFilter.data(),
+           legacy_request->rx_match_filter_len);
+    legacy_request->tx_match_filter_len =
+        hidl_request.baseConfigs.txMatchFilter.size();
+    if (legacy_request->tx_match_filter_len > NAN_MAX_MATCH_FILTER_LEN) {
+        LOG(ERROR) << "convertHidlNanPublishRequestToLegacy: "
+                      "tx_match_filter_len too large";
+        return false;
+    }
+    memcpy(legacy_request->tx_match_filter,
+           hidl_request.baseConfigs.txMatchFilter.data(),
+           legacy_request->tx_match_filter_len);
+    legacy_request->rssi_threshold_flag =
+        hidl_request.baseConfigs.useRssiThreshold;
+    legacy_request->recv_indication_cfg = 0;
+    legacy_request->recv_indication_cfg |=
+        hidl_request.baseConfigs.disableDiscoveryTerminationIndication ? 0x1
+                                                                       : 0x0;
+    legacy_request->recv_indication_cfg |=
+        hidl_request.baseConfigs.disableMatchExpirationIndication ? 0x2 : 0x0;
+    legacy_request->recv_indication_cfg |=
+        hidl_request.baseConfigs.disableFollowupReceivedIndication ? 0x4 : 0x0;
+    legacy_request->recv_indication_cfg |= 0x8;
+    legacy_request->cipher_type =
+        (unsigned int)hidl_request.baseConfigs.securityConfig.cipherType;
+    if (hidl_request.baseConfigs.securityConfig.securityType ==
+        NanDataPathSecurityType::PMK) {
+        legacy_request->key_info.key_type =
+            legacy_hal::NAN_SECURITY_KEY_INPUT_PMK;
+        legacy_request->key_info.body.pmk_info.pmk_len =
+            hidl_request.baseConfigs.securityConfig.pmk.size();
+        if (legacy_request->key_info.body.pmk_info.pmk_len !=
+            NAN_PMK_INFO_LEN) {
+            LOG(ERROR)
+                << "convertHidlNanPublishRequestToLegacy: invalid pmk_len";
+            return false;
+        }
+        memcpy(legacy_request->key_info.body.pmk_info.pmk,
+               hidl_request.baseConfigs.securityConfig.pmk.data(),
+               legacy_request->key_info.body.pmk_info.pmk_len);
+    }
+    if (hidl_request.baseConfigs.securityConfig.securityType ==
+        NanDataPathSecurityType::PASSPHRASE) {
+        legacy_request->key_info.key_type =
+            legacy_hal::NAN_SECURITY_KEY_INPUT_PASSPHRASE;
+        legacy_request->key_info.body.passphrase_info.passphrase_len =
+            hidl_request.baseConfigs.securityConfig.passphrase.size();
+        if (legacy_request->key_info.body.passphrase_info.passphrase_len <
+            NAN_SECURITY_MIN_PASSPHRASE_LEN) {
+            LOG(ERROR) << "convertHidlNanPublishRequestToLegacy: "
+                          "passphrase_len too small";
+            return false;
+        }
+        if (legacy_request->key_info.body.passphrase_info.passphrase_len >
+            NAN_SECURITY_MAX_PASSPHRASE_LEN) {
+            LOG(ERROR) << "convertHidlNanPublishRequestToLegacy: "
+                          "passphrase_len too large";
+            return false;
+        }
+        memcpy(legacy_request->key_info.body.passphrase_info.passphrase,
+               hidl_request.baseConfigs.securityConfig.passphrase.data(),
+               legacy_request->key_info.body.passphrase_info.passphrase_len);
+    }
+    legacy_request->sdea_params.security_cfg =
+        (hidl_request.baseConfigs.securityConfig.securityType !=
+         NanDataPathSecurityType::OPEN)
+            ? legacy_hal::NAN_DP_CONFIG_SECURITY
+            : legacy_hal::NAN_DP_CONFIG_NO_SECURITY;
+    legacy_request->sdea_params.ranging_state =
+        hidl_request.baseConfigs.rangingRequired
+            ? legacy_hal::NAN_RANGING_ENABLE
+            : legacy_hal::NAN_RANGING_DISABLE;
+    legacy_request->ranging_cfg.ranging_interval_msec =
+        hidl_request.baseConfigs.rangingIntervalMsec;
+    legacy_request->ranging_cfg.config_ranging_indications =
+        hidl_request.baseConfigs.configRangingIndications;
+    legacy_request->ranging_cfg.distance_ingress_mm =
+        hidl_request.baseConfigs.distanceIngressCm * 10;
+    legacy_request->ranging_cfg.distance_egress_mm =
+        hidl_request.baseConfigs.distanceEgressCm * 10;
+    legacy_request->ranging_auto_response =
+        hidl_request.baseConfigs.rangingRequired
+            ? legacy_hal::NAN_RANGING_AUTO_RESPONSE_ENABLE
+            : legacy_hal::NAN_RANGING_AUTO_RESPONSE_DISABLE;
+    legacy_request->sdea_params.range_report =
+        legacy_hal::NAN_DISABLE_RANGE_REPORT;
+    legacy_request->publish_type =
+        convertHidlNanPublishTypeToLegacy(hidl_request.publishType);
+    legacy_request->tx_type = convertHidlNanTxTypeToLegacy(hidl_request.txType);
+    legacy_request->service_responder_policy =
+        hidl_request.autoAcceptDataPathRequests
+            ? legacy_hal::NAN_SERVICE_ACCEPT_POLICY_ALL
+            : legacy_hal::NAN_SERVICE_ACCEPT_POLICY_NONE;
+
+    return true;
+}
+
+bool convertHidlNanSubscribeRequestToLegacy(
+    const NanSubscribeRequest& hidl_request,
+    legacy_hal::NanSubscribeRequest* legacy_request) {
+    if (!legacy_request) {
+        LOG(ERROR)
+            << "convertHidlNanSubscribeRequestToLegacy: legacy_request is null";
+        return false;
+    }
+    *legacy_request = {};
+
+    legacy_request->subscribe_id = hidl_request.baseConfigs.sessionId;
+    legacy_request->ttl = hidl_request.baseConfigs.ttlSec;
+    legacy_request->period = hidl_request.baseConfigs.discoveryWindowPeriod;
+    legacy_request->subscribe_count = hidl_request.baseConfigs.discoveryCount;
+    legacy_request->service_name_len =
+        hidl_request.baseConfigs.serviceName.size();
+    if (legacy_request->service_name_len > NAN_MAX_SERVICE_NAME_LEN) {
+        LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
+                      "service_name_len too large";
+        return false;
+    }
+    memcpy(legacy_request->service_name,
+           hidl_request.baseConfigs.serviceName.data(),
+           legacy_request->service_name_len);
+    legacy_request->subscribe_match_indicator = convertHidlNanMatchAlgToLegacy(
+        hidl_request.baseConfigs.discoveryMatchIndicator);
+    legacy_request->service_specific_info_len =
+        hidl_request.baseConfigs.serviceSpecificInfo.size();
+    if (legacy_request->service_specific_info_len >
+        NAN_MAX_SERVICE_SPECIFIC_INFO_LEN) {
+        LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
+                      "service_specific_info_len too large";
+        return false;
+    }
+    memcpy(legacy_request->service_specific_info,
+           hidl_request.baseConfigs.serviceSpecificInfo.data(),
+           legacy_request->service_specific_info_len);
+    legacy_request->sdea_service_specific_info_len =
+        hidl_request.baseConfigs.extendedServiceSpecificInfo.size();
+    if (legacy_request->sdea_service_specific_info_len >
+        NAN_MAX_SDEA_SERVICE_SPECIFIC_INFO_LEN) {
+        LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
+                      "sdea_service_specific_info_len too large";
+        return false;
+    }
+    memcpy(legacy_request->sdea_service_specific_info,
+           hidl_request.baseConfigs.extendedServiceSpecificInfo.data(),
+           legacy_request->sdea_service_specific_info_len);
+    legacy_request->rx_match_filter_len =
+        hidl_request.baseConfigs.rxMatchFilter.size();
+    if (legacy_request->rx_match_filter_len > NAN_MAX_MATCH_FILTER_LEN) {
+        LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
+                      "rx_match_filter_len too large";
+        return false;
+    }
+    memcpy(legacy_request->rx_match_filter,
+           hidl_request.baseConfigs.rxMatchFilter.data(),
+           legacy_request->rx_match_filter_len);
+    legacy_request->tx_match_filter_len =
+        hidl_request.baseConfigs.txMatchFilter.size();
+    if (legacy_request->tx_match_filter_len > NAN_MAX_MATCH_FILTER_LEN) {
+        LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
+                      "tx_match_filter_len too large";
+        return false;
+    }
+    memcpy(legacy_request->tx_match_filter,
+           hidl_request.baseConfigs.txMatchFilter.data(),
+           legacy_request->tx_match_filter_len);
+    legacy_request->rssi_threshold_flag =
+        hidl_request.baseConfigs.useRssiThreshold;
+    legacy_request->recv_indication_cfg = 0;
+    legacy_request->recv_indication_cfg |=
+        hidl_request.baseConfigs.disableDiscoveryTerminationIndication ? 0x1
+                                                                       : 0x0;
+    legacy_request->recv_indication_cfg |=
+        hidl_request.baseConfigs.disableMatchExpirationIndication ? 0x2 : 0x0;
+    legacy_request->recv_indication_cfg |=
+        hidl_request.baseConfigs.disableFollowupReceivedIndication ? 0x4 : 0x0;
+    legacy_request->cipher_type =
+        (unsigned int)hidl_request.baseConfigs.securityConfig.cipherType;
+    if (hidl_request.baseConfigs.securityConfig.securityType ==
+        NanDataPathSecurityType::PMK) {
+        legacy_request->key_info.key_type =
+            legacy_hal::NAN_SECURITY_KEY_INPUT_PMK;
+        legacy_request->key_info.body.pmk_info.pmk_len =
+            hidl_request.baseConfigs.securityConfig.pmk.size();
+        if (legacy_request->key_info.body.pmk_info.pmk_len !=
+            NAN_PMK_INFO_LEN) {
+            LOG(ERROR)
+                << "convertHidlNanSubscribeRequestToLegacy: invalid pmk_len";
+            return false;
+        }
+        memcpy(legacy_request->key_info.body.pmk_info.pmk,
+               hidl_request.baseConfigs.securityConfig.pmk.data(),
+               legacy_request->key_info.body.pmk_info.pmk_len);
+    }
+    if (hidl_request.baseConfigs.securityConfig.securityType ==
+        NanDataPathSecurityType::PASSPHRASE) {
+        legacy_request->key_info.key_type =
+            legacy_hal::NAN_SECURITY_KEY_INPUT_PASSPHRASE;
+        legacy_request->key_info.body.passphrase_info.passphrase_len =
+            hidl_request.baseConfigs.securityConfig.passphrase.size();
+        if (legacy_request->key_info.body.passphrase_info.passphrase_len <
+            NAN_SECURITY_MIN_PASSPHRASE_LEN) {
+            LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
+                          "passphrase_len too small";
+            return false;
+        }
+        if (legacy_request->key_info.body.passphrase_info.passphrase_len >
+            NAN_SECURITY_MAX_PASSPHRASE_LEN) {
+            LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
+                          "passphrase_len too large";
+            return false;
+        }
+        memcpy(legacy_request->key_info.body.passphrase_info.passphrase,
+               hidl_request.baseConfigs.securityConfig.passphrase.data(),
+               legacy_request->key_info.body.passphrase_info.passphrase_len);
+    }
+    legacy_request->sdea_params.security_cfg =
+        (hidl_request.baseConfigs.securityConfig.securityType !=
+         NanDataPathSecurityType::OPEN)
+            ? legacy_hal::NAN_DP_CONFIG_SECURITY
+            : legacy_hal::NAN_DP_CONFIG_NO_SECURITY;
+    legacy_request->sdea_params.ranging_state =
+        hidl_request.baseConfigs.rangingRequired
+            ? legacy_hal::NAN_RANGING_ENABLE
+            : legacy_hal::NAN_RANGING_DISABLE;
+    legacy_request->ranging_cfg.ranging_interval_msec =
+        hidl_request.baseConfigs.rangingIntervalMsec;
+    legacy_request->ranging_cfg.config_ranging_indications =
+        hidl_request.baseConfigs.configRangingIndications;
+    legacy_request->ranging_cfg.distance_ingress_mm =
+        hidl_request.baseConfigs.distanceIngressCm * 10;
+    legacy_request->ranging_cfg.distance_egress_mm =
+        hidl_request.baseConfigs.distanceEgressCm * 10;
+    legacy_request->ranging_auto_response =
+        hidl_request.baseConfigs.rangingRequired
+            ? legacy_hal::NAN_RANGING_AUTO_RESPONSE_ENABLE
+            : legacy_hal::NAN_RANGING_AUTO_RESPONSE_DISABLE;
+    legacy_request->sdea_params.range_report =
+        legacy_hal::NAN_DISABLE_RANGE_REPORT;
+    legacy_request->subscribe_type =
+        convertHidlNanSubscribeTypeToLegacy(hidl_request.subscribeType);
+    legacy_request->serviceResponseFilter =
+        convertHidlNanSrfTypeToLegacy(hidl_request.srfType);
+    legacy_request->serviceResponseInclude =
+        hidl_request.srfRespondIfInAddressSet
+            ? legacy_hal::NAN_SRF_INCLUDE_RESPOND
+            : legacy_hal::NAN_SRF_INCLUDE_DO_NOT_RESPOND;
+    legacy_request->useServiceResponseFilter =
+        hidl_request.shouldUseSrf ? legacy_hal::NAN_USE_SRF
+                                  : legacy_hal::NAN_DO_NOT_USE_SRF;
+    legacy_request->ssiRequiredForMatchIndication =
+        hidl_request.isSsiRequiredForMatch
+            ? legacy_hal::NAN_SSI_REQUIRED_IN_MATCH_IND
+            : legacy_hal::NAN_SSI_NOT_REQUIRED_IN_MATCH_IND;
+    legacy_request->num_intf_addr_present = hidl_request.intfAddr.size();
+    if (legacy_request->num_intf_addr_present > NAN_MAX_SUBSCRIBE_MAX_ADDRESS) {
+        LOG(ERROR) << "convertHidlNanSubscribeRequestToLegacy: "
+                      "num_intf_addr_present - too many";
+        return false;
+    }
+    for (int i = 0; i < legacy_request->num_intf_addr_present; i++) {
+        memcpy(legacy_request->intf_addr[i], hidl_request.intfAddr[i].data(),
+               6);
+    }
+
+    return true;
+}
+
+bool convertHidlNanTransmitFollowupRequestToLegacy(
+    const NanTransmitFollowupRequest& hidl_request,
+    legacy_hal::NanTransmitFollowupRequest* legacy_request) {
+    if (!legacy_request) {
+        LOG(ERROR) << "convertHidlNanTransmitFollowupRequestToLegacy: "
+                      "legacy_request is null";
+        return false;
+    }
+    *legacy_request = {};
+
+    legacy_request->publish_subscribe_id = hidl_request.discoverySessionId;
+    legacy_request->requestor_instance_id = hidl_request.peerId;
+    memcpy(legacy_request->addr, hidl_request.addr.data(), 6);
+    legacy_request->priority = hidl_request.isHighPriority
+                                   ? legacy_hal::NAN_TX_PRIORITY_HIGH
+                                   : legacy_hal::NAN_TX_PRIORITY_NORMAL;
+    legacy_request->dw_or_faw = hidl_request.shouldUseDiscoveryWindow
+                                    ? legacy_hal::NAN_TRANSMIT_IN_DW
+                                    : legacy_hal::NAN_TRANSMIT_IN_FAW;
+    legacy_request->service_specific_info_len =
+        hidl_request.serviceSpecificInfo.size();
+    if (legacy_request->service_specific_info_len >
+        NAN_MAX_SERVICE_SPECIFIC_INFO_LEN) {
+        LOG(ERROR) << "convertHidlNanTransmitFollowupRequestToLegacy: "
+                      "service_specific_info_len too large";
+        return false;
+    }
+    memcpy(legacy_request->service_specific_info,
+           hidl_request.serviceSpecificInfo.data(),
+           legacy_request->service_specific_info_len);
+    legacy_request->sdea_service_specific_info_len =
+        hidl_request.extendedServiceSpecificInfo.size();
+    if (legacy_request->sdea_service_specific_info_len >
+        NAN_MAX_SDEA_SERVICE_SPECIFIC_INFO_LEN) {
+        LOG(ERROR) << "convertHidlNanTransmitFollowupRequestToLegacy: "
+                      "sdea_service_specific_info_len too large";
+        return false;
+    }
+    memcpy(legacy_request->sdea_service_specific_info,
+           hidl_request.extendedServiceSpecificInfo.data(),
+           legacy_request->sdea_service_specific_info_len);
+    legacy_request->recv_indication_cfg =
+        hidl_request.disableFollowupResultIndication ? 0x1 : 0x0;
+
+    return true;
+}
+
+bool convertHidlNanConfigRequestToLegacy(
+    const NanConfigRequest& hidl_request,
+    legacy_hal::NanConfigRequest* legacy_request) {
+    if (!legacy_request) {
+        LOG(ERROR)
+            << "convertHidlNanConfigRequestToLegacy: legacy_request is null";
+        return false;
+    }
+    *legacy_request = {};
+
+    // TODO: b/34059183 tracks missing configurations in legacy HAL or uknown
+    // defaults
+    legacy_request->master_pref = hidl_request.masterPref;
+    legacy_request->discovery_indication_cfg = 0;
+    legacy_request->discovery_indication_cfg |=
+        hidl_request.disableDiscoveryAddressChangeIndication ? 0x1 : 0x0;
+    legacy_request->discovery_indication_cfg |=
+        hidl_request.disableStartedClusterIndication ? 0x2 : 0x0;
+    legacy_request->discovery_indication_cfg |=
+        hidl_request.disableJoinedClusterIndication ? 0x4 : 0x0;
+    legacy_request->config_sid_beacon = 1;
+    if (hidl_request.numberOfPublishServiceIdsInBeacon > 127) {
+        LOG(ERROR) << "convertHidlNanConfigRequestToLegacy: "
+                      "numberOfPublishServiceIdsInBeacon > 127";
+        return false;
+    }
+    legacy_request->sid_beacon =
+        (hidl_request.includePublishServiceIdsInBeacon ? 0x1 : 0x0) |
+        (hidl_request.numberOfPublishServiceIdsInBeacon << 1);
+    legacy_request->config_subscribe_sid_beacon = 1;
+    if (hidl_request.numberOfSubscribeServiceIdsInBeacon > 127) {
+        LOG(ERROR) << "convertHidlNanConfigRequestToLegacy: "
+                      "numberOfSubscribeServiceIdsInBeacon > 127";
+        return false;
+    }
+    legacy_request->subscribe_sid_beacon_val =
+        (hidl_request.includeSubscribeServiceIdsInBeacon ? 0x1 : 0x0) |
+        (hidl_request.numberOfSubscribeServiceIdsInBeacon << 1);
+    legacy_request->config_rssi_window_size = 1;
+    legacy_request->rssi_window_size_val = hidl_request.rssiWindowSize;
+    legacy_request->config_disc_mac_addr_randomization = 1;
+    legacy_request->disc_mac_addr_rand_interval_sec =
+        hidl_request.macAddressRandomizationIntervalSec;
+    /* TODO : missing
+    legacy_request->config_2dot4g_rssi_close = 1;
+    legacy_request->rssi_close_2dot4g_val =
+          hidl_request.bandSpecificConfig[
+              (size_t) NanBandIndex::NAN_BAND_24GHZ].rssiClose;
+    legacy_request->config_2dot4g_rssi_middle = 1;
+    legacy_request->rssi_middle_2dot4g_val =
+          hidl_request.bandSpecificConfig[
+              (size_t) NanBandIndex::NAN_BAND_24GHZ].rssiMiddle;
+    legacy_request->config_2dot4g_rssi_proximity = 1;
+    legacy_request->rssi_proximity_2dot4g_val =
+          hidl_request.bandSpecificConfig[
+              (size_t) NanBandIndex::NAN_BAND_24GHZ].rssiCloseProximity;
+    */
+    legacy_request->config_scan_params = 1;
+    legacy_request->scan_params_val
+        .dwell_time[legacy_hal::NAN_CHANNEL_24G_BAND] =
+        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
+            .dwellTimeMs;
+    legacy_request->scan_params_val
+        .scan_period[legacy_hal::NAN_CHANNEL_24G_BAND] =
+        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
+            .scanPeriodSec;
+    legacy_request->config_dw.config_2dot4g_dw_band =
+        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
+            .validDiscoveryWindowIntervalVal;
+    legacy_request->config_dw.dw_2dot4g_interval_val =
+        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_24GHZ]
+            .discoveryWindowIntervalVal;
+    /* TODO: missing
+    legacy_request->config_5g_rssi_close = 1;
+    legacy_request->rssi_close_5g_val =
+          hidl_request.bandSpecificConfig[
+              (size_t) NanBandIndex::NAN_BAND_5GHZ].rssiClose;
+    legacy_request->config_5g_rssi_middle = 1;
+    legacy_request->rssi_middle_5g_val =
+          hidl_request.bandSpecificConfig[
+              (size_t) NanBandIndex::NAN_BAND_5GHZ].rssiMiddle;
+    */
+    legacy_request->config_5g_rssi_close_proximity = 1;
+    legacy_request->rssi_close_proximity_5g_val =
+        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
+            .rssiCloseProximity;
+    legacy_request->scan_params_val
+        .dwell_time[legacy_hal::NAN_CHANNEL_5G_BAND_LOW] =
+        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
+            .dwellTimeMs;
+    legacy_request->scan_params_val
+        .scan_period[legacy_hal::NAN_CHANNEL_5G_BAND_LOW] =
+        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
+            .scanPeriodSec;
+    legacy_request->scan_params_val
+        .dwell_time[legacy_hal::NAN_CHANNEL_5G_BAND_HIGH] =
+        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
+            .dwellTimeMs;
+    legacy_request->scan_params_val
+        .scan_period[legacy_hal::NAN_CHANNEL_5G_BAND_HIGH] =
+        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
+            .scanPeriodSec;
+    legacy_request->config_dw.config_5g_dw_band =
+        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
+            .validDiscoveryWindowIntervalVal;
+    legacy_request->config_dw.dw_5g_interval_val =
+        hidl_request.bandSpecificConfig[(size_t)NanBandIndex::NAN_BAND_5GHZ]
+            .discoveryWindowIntervalVal;
+    /* TODO: b/145609058
+     * Missing updates needed to legacy_hal::NanConfigRequest and conversion to
+     * it for 6GHz band */
+
+    return true;
+}
+
+bool convertHidlNanConfigRequest_1_4ToLegacy(
+    const NanConfigRequest& hidl_request1,
+    const V1_2::NanConfigRequestSupplemental& hidl_request2,
+    legacy_hal::NanConfigRequest* legacy_request) {
+    if (!legacy_request) {
+        LOG(ERROR) << "convertHidlNanConfigRequest_1_4ToLegacy: legacy_request "
+                      "is null";
+        return false;
+    }
+
+    *legacy_request = {};
+    if (!convertHidlNanConfigRequestToLegacy(hidl_request1, legacy_request)) {
+        return false;
+    }
+
+    legacy_request->config_discovery_beacon_int = 1;
+    legacy_request->discovery_beacon_interval =
+        hidl_request2.discoveryBeaconIntervalMs;
+    legacy_request->config_nss = 1;
+    legacy_request->nss = hidl_request2.numberOfSpatialStreamsInDiscovery;
+    legacy_request->config_dw_early_termination = 1;
+    legacy_request->enable_dw_termination =
+        hidl_request2.enableDiscoveryWindowEarlyTermination;
+    legacy_request->config_enable_ranging = 1;
+    legacy_request->enable_ranging = hidl_request2.enableRanging;
+
+    return true;
+}
+
+bool convertHidlNanDataPathInitiatorRequestToLegacy(
+    const NanInitiateDataPathRequest& hidl_request,
+    legacy_hal::NanDataPathInitiatorRequest* legacy_request) {
+    if (!legacy_request) {
+        LOG(ERROR) << "convertHidlNanDataPathInitiatorRequestToLegacy: "
+                      "legacy_request is null";
+        return false;
+    }
+    *legacy_request = {};
+
+    legacy_request->requestor_instance_id = hidl_request.peerId;
+    memcpy(legacy_request->peer_disc_mac_addr,
+           hidl_request.peerDiscMacAddr.data(), 6);
+    legacy_request->channel_request_type =
+        convertHidlNanDataPathChannelCfgToLegacy(
+            hidl_request.channelRequestType);
+    legacy_request->channel = hidl_request.channel;
+    if (strnlen(hidl_request.ifaceName.c_str(), IFNAMSIZ + 1) == IFNAMSIZ + 1) {
+        LOG(ERROR) << "convertHidlNanDataPathInitiatorRequestToLegacy: "
+                      "ifaceName too long";
+        return false;
+    }
+    strncpy(legacy_request->ndp_iface, hidl_request.ifaceName.c_str(),
+            IFNAMSIZ + 1);
+    legacy_request->ndp_cfg.security_cfg =
+        (hidl_request.securityConfig.securityType !=
+         NanDataPathSecurityType::OPEN)
+            ? legacy_hal::NAN_DP_CONFIG_SECURITY
+            : legacy_hal::NAN_DP_CONFIG_NO_SECURITY;
+    legacy_request->app_info.ndp_app_info_len = hidl_request.appInfo.size();
+    if (legacy_request->app_info.ndp_app_info_len > NAN_DP_MAX_APP_INFO_LEN) {
+        LOG(ERROR) << "convertHidlNanDataPathInitiatorRequestToLegacy: "
+                      "ndp_app_info_len too large";
+        return false;
+    }
+    memcpy(legacy_request->app_info.ndp_app_info, hidl_request.appInfo.data(),
+           legacy_request->app_info.ndp_app_info_len);
+    legacy_request->cipher_type =
+        (unsigned int)hidl_request.securityConfig.cipherType;
+    if (hidl_request.securityConfig.securityType ==
+        NanDataPathSecurityType::PMK) {
+        legacy_request->key_info.key_type =
+            legacy_hal::NAN_SECURITY_KEY_INPUT_PMK;
+        legacy_request->key_info.body.pmk_info.pmk_len =
+            hidl_request.securityConfig.pmk.size();
+        if (legacy_request->key_info.body.pmk_info.pmk_len !=
+            NAN_PMK_INFO_LEN) {
+            LOG(ERROR) << "convertHidlNanDataPathInitiatorRequestToLegacy: "
+                          "invalid pmk_len";
+            return false;
+        }
+        memcpy(legacy_request->key_info.body.pmk_info.pmk,
+               hidl_request.securityConfig.pmk.data(),
+               legacy_request->key_info.body.pmk_info.pmk_len);
+    }
+    if (hidl_request.securityConfig.securityType ==
+        NanDataPathSecurityType::PASSPHRASE) {
+        legacy_request->key_info.key_type =
+            legacy_hal::NAN_SECURITY_KEY_INPUT_PASSPHRASE;
+        legacy_request->key_info.body.passphrase_info.passphrase_len =
+            hidl_request.securityConfig.passphrase.size();
+        if (legacy_request->key_info.body.passphrase_info.passphrase_len <
+            NAN_SECURITY_MIN_PASSPHRASE_LEN) {
+            LOG(ERROR) << "convertHidlNanDataPathInitiatorRequestToLegacy: "
+                          "passphrase_len too small";
+            return false;
+        }
+        if (legacy_request->key_info.body.passphrase_info.passphrase_len >
+            NAN_SECURITY_MAX_PASSPHRASE_LEN) {
+            LOG(ERROR) << "convertHidlNanDataPathInitiatorRequestToLegacy: "
+                          "passphrase_len too large";
+            return false;
+        }
+        memcpy(legacy_request->key_info.body.passphrase_info.passphrase,
+               hidl_request.securityConfig.passphrase.data(),
+               legacy_request->key_info.body.passphrase_info.passphrase_len);
+    }
+    legacy_request->service_name_len = hidl_request.serviceNameOutOfBand.size();
+    if (legacy_request->service_name_len > NAN_MAX_SERVICE_NAME_LEN) {
+        LOG(ERROR) << "convertHidlNanDataPathInitiatorRequestToLegacy: "
+                      "service_name_len too large";
+        return false;
+    }
+    memcpy(legacy_request->service_name,
+           hidl_request.serviceNameOutOfBand.data(),
+           legacy_request->service_name_len);
+
+    return true;
+}
+
+bool convertHidlNanDataPathIndicationResponseToLegacy(
+    const NanRespondToDataPathIndicationRequest& hidl_request,
+    legacy_hal::NanDataPathIndicationResponse* legacy_request) {
+    if (!legacy_request) {
+        LOG(ERROR) << "convertHidlNanDataPathIndicationResponseToLegacy: "
+                      "legacy_request is null";
+        return false;
+    }
+    *legacy_request = {};
+
+    legacy_request->rsp_code = hidl_request.acceptRequest
+                                   ? legacy_hal::NAN_DP_REQUEST_ACCEPT
+                                   : legacy_hal::NAN_DP_REQUEST_REJECT;
+    legacy_request->ndp_instance_id = hidl_request.ndpInstanceId;
+    if (strnlen(hidl_request.ifaceName.c_str(), IFNAMSIZ + 1) == IFNAMSIZ + 1) {
+        LOG(ERROR) << "convertHidlNanDataPathIndicationResponseToLegacy: "
+                      "ifaceName too long";
+        return false;
+    }
+    strncpy(legacy_request->ndp_iface, hidl_request.ifaceName.c_str(),
+            IFNAMSIZ + 1);
+    legacy_request->ndp_cfg.security_cfg =
+        (hidl_request.securityConfig.securityType !=
+         NanDataPathSecurityType::OPEN)
+            ? legacy_hal::NAN_DP_CONFIG_SECURITY
+            : legacy_hal::NAN_DP_CONFIG_NO_SECURITY;
+    legacy_request->app_info.ndp_app_info_len = hidl_request.appInfo.size();
+    if (legacy_request->app_info.ndp_app_info_len > NAN_DP_MAX_APP_INFO_LEN) {
+        LOG(ERROR) << "convertHidlNanDataPathIndicationResponseToLegacy: "
+                      "ndp_app_info_len too large";
+        return false;
+    }
+    memcpy(legacy_request->app_info.ndp_app_info, hidl_request.appInfo.data(),
+           legacy_request->app_info.ndp_app_info_len);
+    legacy_request->cipher_type =
+        (unsigned int)hidl_request.securityConfig.cipherType;
+    if (hidl_request.securityConfig.securityType ==
+        NanDataPathSecurityType::PMK) {
+        legacy_request->key_info.key_type =
+            legacy_hal::NAN_SECURITY_KEY_INPUT_PMK;
+        legacy_request->key_info.body.pmk_info.pmk_len =
+            hidl_request.securityConfig.pmk.size();
+        if (legacy_request->key_info.body.pmk_info.pmk_len !=
+            NAN_PMK_INFO_LEN) {
+            LOG(ERROR) << "convertHidlNanDataPathIndicationResponseToLegacy: "
+                          "invalid pmk_len";
+            return false;
+        }
+        memcpy(legacy_request->key_info.body.pmk_info.pmk,
+               hidl_request.securityConfig.pmk.data(),
+               legacy_request->key_info.body.pmk_info.pmk_len);
+    }
+    if (hidl_request.securityConfig.securityType ==
+        NanDataPathSecurityType::PASSPHRASE) {
+        legacy_request->key_info.key_type =
+            legacy_hal::NAN_SECURITY_KEY_INPUT_PASSPHRASE;
+        legacy_request->key_info.body.passphrase_info.passphrase_len =
+            hidl_request.securityConfig.passphrase.size();
+        if (legacy_request->key_info.body.passphrase_info.passphrase_len <
+            NAN_SECURITY_MIN_PASSPHRASE_LEN) {
+            LOG(ERROR) << "convertHidlNanDataPathIndicationResponseToLegacy: "
+                          "passphrase_len too small";
+            return false;
+        }
+        if (legacy_request->key_info.body.passphrase_info.passphrase_len >
+            NAN_SECURITY_MAX_PASSPHRASE_LEN) {
+            LOG(ERROR) << "convertHidlNanDataPathIndicationResponseToLegacy: "
+                          "passphrase_len too large";
+            return false;
+        }
+        memcpy(legacy_request->key_info.body.passphrase_info.passphrase,
+               hidl_request.securityConfig.passphrase.data(),
+               legacy_request->key_info.body.passphrase_info.passphrase_len);
+    }
+    legacy_request->service_name_len = hidl_request.serviceNameOutOfBand.size();
+    if (legacy_request->service_name_len > NAN_MAX_SERVICE_NAME_LEN) {
+        LOG(ERROR) << "convertHidlNanDataPathIndicationResponseToLegacy: "
+                      "service_name_len too large";
+        return false;
+    }
+    memcpy(legacy_request->service_name,
+           hidl_request.serviceNameOutOfBand.data(),
+           legacy_request->service_name_len);
+
+    return true;
+}
+
+bool convertLegacyNanResponseHeaderToHidl(
+    const legacy_hal::NanResponseMsg& legacy_response,
+    WifiNanStatus* wifiNanStatus) {
+    if (!wifiNanStatus) {
+        LOG(ERROR)
+            << "convertLegacyNanResponseHeaderToHidl: wifiNanStatus is null";
+        return false;
+    }
+    *wifiNanStatus = {};
+
+    convertToWifiNanStatus(legacy_response.status, legacy_response.nan_error,
+                           sizeof(legacy_response.nan_error), wifiNanStatus);
+    return true;
+}
+
+bool convertLegacyNanCapabilitiesResponseToHidl(
+    const legacy_hal::NanCapabilities& legacy_response,
+    NanCapabilities* hidl_response) {
+    if (!hidl_response) {
+        LOG(ERROR) << "convertLegacyNanCapabilitiesResponseToHidl: "
+                      "hidl_response is null";
+        return false;
+    }
+    *hidl_response = {};
+
+    hidl_response->maxConcurrentClusters =
+        legacy_response.max_concurrent_nan_clusters;
+    hidl_response->maxPublishes = legacy_response.max_publishes;
+    hidl_response->maxSubscribes = legacy_response.max_subscribes;
+    hidl_response->maxServiceNameLen = legacy_response.max_service_name_len;
+    hidl_response->maxMatchFilterLen = legacy_response.max_match_filter_len;
+    hidl_response->maxTotalMatchFilterLen =
+        legacy_response.max_total_match_filter_len;
+    hidl_response->maxServiceSpecificInfoLen =
+        legacy_response.max_service_specific_info_len;
+    hidl_response->maxExtendedServiceSpecificInfoLen =
+        legacy_response.max_sdea_service_specific_info_len;
+    hidl_response->maxNdiInterfaces = legacy_response.max_ndi_interfaces;
+    hidl_response->maxNdpSessions = legacy_response.max_ndp_sessions;
+    hidl_response->maxAppInfoLen = legacy_response.max_app_info_len;
+    hidl_response->maxQueuedTransmitFollowupMsgs =
+        legacy_response.max_queued_transmit_followup_msgs;
+    hidl_response->maxSubscribeInterfaceAddresses =
+        legacy_response.max_subscribe_address;
+    hidl_response->supportedCipherSuites =
+        legacy_response.cipher_suites_supported;
+
+    return true;
+}
+
+bool convertLegacyNanMatchIndToHidl(const legacy_hal::NanMatchInd& legacy_ind,
+                                    NanMatchInd* hidl_ind) {
+    if (!hidl_ind) {
+        LOG(ERROR) << "convertLegacyNanMatchIndToHidl: hidl_ind is null";
+        return false;
+    }
+    *hidl_ind = {};
+
+    hidl_ind->discoverySessionId = legacy_ind.publish_subscribe_id;
+    hidl_ind->peerId = legacy_ind.requestor_instance_id;
+    hidl_ind->addr = hidl_array<uint8_t, 6>(legacy_ind.addr);
+    hidl_ind->serviceSpecificInfo =
+        std::vector<uint8_t>(legacy_ind.service_specific_info,
+                             legacy_ind.service_specific_info +
+                                 legacy_ind.service_specific_info_len);
+    hidl_ind->extendedServiceSpecificInfo =
+        std::vector<uint8_t>(legacy_ind.sdea_service_specific_info,
+                             legacy_ind.sdea_service_specific_info +
+                                 legacy_ind.sdea_service_specific_info_len);
+    hidl_ind->matchFilter = std::vector<uint8_t>(
+        legacy_ind.sdf_match_filter,
+        legacy_ind.sdf_match_filter + legacy_ind.sdf_match_filter_len);
+    hidl_ind->matchOccuredInBeaconFlag = legacy_ind.match_occured_flag == 1;
+    hidl_ind->outOfResourceFlag = legacy_ind.out_of_resource_flag == 1;
+    hidl_ind->rssiValue = legacy_ind.rssi_value;
+    hidl_ind->peerCipherType = (NanCipherSuiteType)legacy_ind.peer_cipher_type;
+    hidl_ind->peerRequiresSecurityEnabledInNdp =
+        legacy_ind.peer_sdea_params.security_cfg ==
+        legacy_hal::NAN_DP_CONFIG_SECURITY;
+    hidl_ind->peerRequiresRanging = legacy_ind.peer_sdea_params.ranging_state ==
+                                    legacy_hal::NAN_RANGING_ENABLE;
+    hidl_ind->rangingMeasurementInCm =
+        legacy_ind.range_info.range_measurement_mm / 10;
+    hidl_ind->rangingIndicationType = legacy_ind.range_info.ranging_event_type;
+
+    return true;
+}
+
+bool convertLegacyNanFollowupIndToHidl(
+    const legacy_hal::NanFollowupInd& legacy_ind,
+    NanFollowupReceivedInd* hidl_ind) {
+    if (!hidl_ind) {
+        LOG(ERROR) << "convertLegacyNanFollowupIndToHidl: hidl_ind is null";
+        return false;
+    }
+    *hidl_ind = {};
+
+    hidl_ind->discoverySessionId = legacy_ind.publish_subscribe_id;
+    hidl_ind->peerId = legacy_ind.requestor_instance_id;
+    hidl_ind->addr = hidl_array<uint8_t, 6>(legacy_ind.addr);
+    hidl_ind->receivedInFaw = legacy_ind.dw_or_faw == 1;
+    hidl_ind->serviceSpecificInfo =
+        std::vector<uint8_t>(legacy_ind.service_specific_info,
+                             legacy_ind.service_specific_info +
+                                 legacy_ind.service_specific_info_len);
+    hidl_ind->extendedServiceSpecificInfo =
+        std::vector<uint8_t>(legacy_ind.sdea_service_specific_info,
+                             legacy_ind.sdea_service_specific_info +
+                                 legacy_ind.sdea_service_specific_info_len);
+
+    return true;
+}
+
+bool convertLegacyNanDataPathRequestIndToHidl(
+    const legacy_hal::NanDataPathRequestInd& legacy_ind,
+    NanDataPathRequestInd* hidl_ind) {
+    if (!hidl_ind) {
+        LOG(ERROR)
+            << "convertLegacyNanDataPathRequestIndToHidl: hidl_ind is null";
+        return false;
+    }
+    *hidl_ind = {};
+
+    hidl_ind->discoverySessionId = legacy_ind.service_instance_id;
+    hidl_ind->peerDiscMacAddr =
+        hidl_array<uint8_t, 6>(legacy_ind.peer_disc_mac_addr);
+    hidl_ind->ndpInstanceId = legacy_ind.ndp_instance_id;
+    hidl_ind->securityRequired =
+        legacy_ind.ndp_cfg.security_cfg == legacy_hal::NAN_DP_CONFIG_SECURITY;
+    hidl_ind->appInfo =
+        std::vector<uint8_t>(legacy_ind.app_info.ndp_app_info,
+                             legacy_ind.app_info.ndp_app_info +
+                                 legacy_ind.app_info.ndp_app_info_len);
+
+    return true;
+}
+
+bool convertLegacyNdpChannelInfoToHidl(
+    const legacy_hal::NanChannelInfo& legacy_struct,
+    V1_2::NanDataPathChannelInfo* hidl_struct) {
+    if (!hidl_struct) {
+        LOG(ERROR) << "convertLegacyNdpChannelInfoToHidl: hidl_struct is null";
+        return false;
+    }
+    *hidl_struct = {};
+
+    hidl_struct->channelFreq = legacy_struct.channel;
+    hidl_struct->channelBandwidth = convertLegacyWifiChannelWidthToHidl(
+        (legacy_hal::wifi_channel_width)legacy_struct.bandwidth);
+    hidl_struct->numSpatialStreams = legacy_struct.nss;
+
+    return true;
+}
+
+bool convertLegacyNanDataPathConfirmIndToHidl(
+    const legacy_hal::NanDataPathConfirmInd& legacy_ind,
+    V1_2::NanDataPathConfirmInd* hidl_ind) {
+    if (!hidl_ind) {
+        LOG(ERROR)
+            << "convertLegacyNanDataPathConfirmIndToHidl: hidl_ind is null";
+        return false;
+    }
+    *hidl_ind = {};
+
+    hidl_ind->V1_0.ndpInstanceId = legacy_ind.ndp_instance_id;
+    hidl_ind->V1_0.dataPathSetupSuccess =
+        legacy_ind.rsp_code == legacy_hal::NAN_DP_REQUEST_ACCEPT;
+    hidl_ind->V1_0.peerNdiMacAddr =
+        hidl_array<uint8_t, 6>(legacy_ind.peer_ndi_mac_addr);
+    hidl_ind->V1_0.appInfo =
+        std::vector<uint8_t>(legacy_ind.app_info.ndp_app_info,
+                             legacy_ind.app_info.ndp_app_info +
+                                 legacy_ind.app_info.ndp_app_info_len);
+    hidl_ind->V1_0.status.status =
+        convertLegacyNanStatusTypeToHidl(legacy_ind.reason_code);
+    hidl_ind->V1_0.status.description = "";  // TODO: b/34059183
+
+    std::vector<V1_2::NanDataPathChannelInfo> channelInfo;
+    for (unsigned int i = 0; i < legacy_ind.num_channels; ++i) {
+        V1_2::NanDataPathChannelInfo hidl_struct;
+        if (!convertLegacyNdpChannelInfoToHidl(legacy_ind.channel_info[i],
+                                               &hidl_struct)) {
+            return false;
+        }
+        channelInfo.push_back(hidl_struct);
+    }
+    hidl_ind->channelInfo = channelInfo;
+
+    return true;
+}
+
+bool convertLegacyNanDataPathScheduleUpdateIndToHidl(
+    const legacy_hal::NanDataPathScheduleUpdateInd& legacy_ind,
+    V1_2::NanDataPathScheduleUpdateInd* hidl_ind) {
+    if (!hidl_ind) {
+        LOG(ERROR) << "convertLegacyNanDataPathScheduleUpdateIndToHidl: "
+                      "hidl_ind is null";
+        return false;
+    }
+    *hidl_ind = {};
+
+    hidl_ind->peerDiscoveryAddress =
+        hidl_array<uint8_t, 6>(legacy_ind.peer_mac_addr);
+    std::vector<V1_2::NanDataPathChannelInfo> channelInfo;
+    for (unsigned int i = 0; i < legacy_ind.num_channels; ++i) {
+        V1_2::NanDataPathChannelInfo hidl_struct;
+        if (!convertLegacyNdpChannelInfoToHidl(legacy_ind.channel_info[i],
+                                               &hidl_struct)) {
+            return false;
+        }
+        channelInfo.push_back(hidl_struct);
+    }
+    hidl_ind->channelInfo = channelInfo;
+    std::vector<uint32_t> ndpInstanceIds;
+    for (unsigned int i = 0; i < legacy_ind.num_ndp_instances; ++i) {
+        ndpInstanceIds.push_back(legacy_ind.ndp_instance_id[i]);
+    }
+    hidl_ind->ndpInstanceIds = ndpInstanceIds;
+
+    return true;
+}
+
+legacy_hal::wifi_rtt_type convertHidlRttTypeToLegacy(RttType type) {
+    switch (type) {
+        case RttType::ONE_SIDED:
+            return legacy_hal::RTT_TYPE_1_SIDED;
+        case RttType::TWO_SIDED:
+            return legacy_hal::RTT_TYPE_2_SIDED;
+    };
+    CHECK(false);
+}
+
+RttType convertLegacyRttTypeToHidl(legacy_hal::wifi_rtt_type type) {
+    switch (type) {
+        case legacy_hal::RTT_TYPE_1_SIDED:
+            return RttType::ONE_SIDED;
+        case legacy_hal::RTT_TYPE_2_SIDED:
+            return RttType::TWO_SIDED;
+    };
+    CHECK(false) << "Unknown legacy type: " << type;
+}
+
+legacy_hal::rtt_peer_type convertHidlRttPeerTypeToLegacy(RttPeerType type) {
+    switch (type) {
+        case RttPeerType::AP:
+            return legacy_hal::RTT_PEER_AP;
+        case RttPeerType::STA:
+            return legacy_hal::RTT_PEER_STA;
+        case RttPeerType::P2P_GO:
+            return legacy_hal::RTT_PEER_P2P_GO;
+        case RttPeerType::P2P_CLIENT:
+            return legacy_hal::RTT_PEER_P2P_CLIENT;
+        case RttPeerType::NAN:
+            return legacy_hal::RTT_PEER_NAN;
+    };
+    CHECK(false);
+}
+
+legacy_hal::wifi_channel_width convertHidlWifiChannelWidthToLegacy(
+    WifiChannelWidthInMhz type) {
+    switch (type) {
+        case WifiChannelWidthInMhz::WIDTH_20:
+            return legacy_hal::WIFI_CHAN_WIDTH_20;
+        case WifiChannelWidthInMhz::WIDTH_40:
+            return legacy_hal::WIFI_CHAN_WIDTH_40;
+        case WifiChannelWidthInMhz::WIDTH_80:
+            return legacy_hal::WIFI_CHAN_WIDTH_80;
+        case WifiChannelWidthInMhz::WIDTH_160:
+            return legacy_hal::WIFI_CHAN_WIDTH_160;
+        case WifiChannelWidthInMhz::WIDTH_80P80:
+            return legacy_hal::WIFI_CHAN_WIDTH_80P80;
+        case WifiChannelWidthInMhz::WIDTH_5:
+            return legacy_hal::WIFI_CHAN_WIDTH_5;
+        case WifiChannelWidthInMhz::WIDTH_10:
+            return legacy_hal::WIFI_CHAN_WIDTH_10;
+        case WifiChannelWidthInMhz::WIDTH_INVALID:
+            return legacy_hal::WIFI_CHAN_WIDTH_INVALID;
+    };
+    CHECK(false);
+}
+
+WifiChannelWidthInMhz convertLegacyWifiChannelWidthToHidl(
+    legacy_hal::wifi_channel_width type) {
+    switch (type) {
+        case legacy_hal::WIFI_CHAN_WIDTH_20:
+            return WifiChannelWidthInMhz::WIDTH_20;
+        case legacy_hal::WIFI_CHAN_WIDTH_40:
+            return WifiChannelWidthInMhz::WIDTH_40;
+        case legacy_hal::WIFI_CHAN_WIDTH_80:
+            return WifiChannelWidthInMhz::WIDTH_80;
+        case legacy_hal::WIFI_CHAN_WIDTH_160:
+            return WifiChannelWidthInMhz::WIDTH_160;
+        case legacy_hal::WIFI_CHAN_WIDTH_80P80:
+            return WifiChannelWidthInMhz::WIDTH_80P80;
+        case legacy_hal::WIFI_CHAN_WIDTH_5:
+            return WifiChannelWidthInMhz::WIDTH_5;
+        case legacy_hal::WIFI_CHAN_WIDTH_10:
+            return WifiChannelWidthInMhz::WIDTH_10;
+        case legacy_hal::WIFI_CHAN_WIDTH_INVALID:
+            return WifiChannelWidthInMhz::WIDTH_INVALID;
+    };
+    CHECK(false) << "Unknown legacy type: " << type;
+}
+
+legacy_hal::wifi_rtt_preamble convertHidlRttPreambleToLegacy(RttPreamble type) {
+    switch (type) {
+        case RttPreamble::LEGACY:
+            return legacy_hal::WIFI_RTT_PREAMBLE_LEGACY;
+        case RttPreamble::HT:
+            return legacy_hal::WIFI_RTT_PREAMBLE_HT;
+        case RttPreamble::VHT:
+            return legacy_hal::WIFI_RTT_PREAMBLE_VHT;
+        case RttPreamble::HE:
+            return legacy_hal::WIFI_RTT_PREAMBLE_HE;
+    };
+    CHECK(false);
+}
+
+RttPreamble convertLegacyRttPreambleToHidl(legacy_hal::wifi_rtt_preamble type) {
+    switch (type) {
+        case legacy_hal::WIFI_RTT_PREAMBLE_LEGACY:
+            return RttPreamble::LEGACY;
+        case legacy_hal::WIFI_RTT_PREAMBLE_HT:
+            return RttPreamble::HT;
+        case legacy_hal::WIFI_RTT_PREAMBLE_VHT:
+            return RttPreamble::VHT;
+        case legacy_hal::WIFI_RTT_PREAMBLE_HE:
+            return RttPreamble::HE;
+    };
+    CHECK(false) << "Unknown legacy type: " << type;
+}
+
+legacy_hal::wifi_rtt_bw convertHidlRttBwToLegacy(RttBw type) {
+    switch (type) {
+        case RttBw::BW_5MHZ:
+            return legacy_hal::WIFI_RTT_BW_5;
+        case RttBw::BW_10MHZ:
+            return legacy_hal::WIFI_RTT_BW_10;
+        case RttBw::BW_20MHZ:
+            return legacy_hal::WIFI_RTT_BW_20;
+        case RttBw::BW_40MHZ:
+            return legacy_hal::WIFI_RTT_BW_40;
+        case RttBw::BW_80MHZ:
+            return legacy_hal::WIFI_RTT_BW_80;
+        case RttBw::BW_160MHZ:
+            return legacy_hal::WIFI_RTT_BW_160;
+    };
+    CHECK(false);
+}
+
+RttBw convertLegacyRttBwToHidl(legacy_hal::wifi_rtt_bw type) {
+    switch (type) {
+        case legacy_hal::WIFI_RTT_BW_5:
+            return RttBw::BW_5MHZ;
+        case legacy_hal::WIFI_RTT_BW_10:
+            return RttBw::BW_10MHZ;
+        case legacy_hal::WIFI_RTT_BW_20:
+            return RttBw::BW_20MHZ;
+        case legacy_hal::WIFI_RTT_BW_40:
+            return RttBw::BW_40MHZ;
+        case legacy_hal::WIFI_RTT_BW_80:
+            return RttBw::BW_80MHZ;
+        case legacy_hal::WIFI_RTT_BW_160:
+            return RttBw::BW_160MHZ;
+    };
+    CHECK(false) << "Unknown legacy type: " << type;
+}
+
+legacy_hal::wifi_motion_pattern convertHidlRttMotionPatternToLegacy(
+    RttMotionPattern type) {
+    switch (type) {
+        case RttMotionPattern::NOT_EXPECTED:
+            return legacy_hal::WIFI_MOTION_NOT_EXPECTED;
+        case RttMotionPattern::EXPECTED:
+            return legacy_hal::WIFI_MOTION_EXPECTED;
+        case RttMotionPattern::UNKNOWN:
+            return legacy_hal::WIFI_MOTION_UNKNOWN;
+    };
+    CHECK(false);
+}
+
+WifiRatePreamble convertLegacyWifiRatePreambleToHidl(uint8_t preamble) {
+    switch (preamble) {
+        case 0:
+            return WifiRatePreamble::OFDM;
+        case 1:
+            return WifiRatePreamble::CCK;
+        case 2:
+            return WifiRatePreamble::HT;
+        case 3:
+            return WifiRatePreamble::VHT;
+        case 4:
+            return WifiRatePreamble::HE;
+        default:
+            return WifiRatePreamble::RESERVED;
+    };
+    CHECK(false) << "Unknown legacy preamble: " << preamble;
+}
+
+WifiRateNss convertLegacyWifiRateNssToHidl(uint8_t nss) {
+    switch (nss) {
+        case 0:
+            return WifiRateNss::NSS_1x1;
+        case 1:
+            return WifiRateNss::NSS_2x2;
+        case 2:
+            return WifiRateNss::NSS_3x3;
+        case 3:
+            return WifiRateNss::NSS_4x4;
+    };
+    CHECK(false) << "Unknown legacy nss: " << nss;
+    return {};
+}
+
+RttStatus convertLegacyRttStatusToHidl(legacy_hal::wifi_rtt_status status) {
+    switch (status) {
+        case legacy_hal::RTT_STATUS_SUCCESS:
+            return RttStatus::SUCCESS;
+        case legacy_hal::RTT_STATUS_FAILURE:
+            return RttStatus::FAILURE;
+        case legacy_hal::RTT_STATUS_FAIL_NO_RSP:
+            return RttStatus::FAIL_NO_RSP;
+        case legacy_hal::RTT_STATUS_FAIL_REJECTED:
+            return RttStatus::FAIL_REJECTED;
+        case legacy_hal::RTT_STATUS_FAIL_NOT_SCHEDULED_YET:
+            return RttStatus::FAIL_NOT_SCHEDULED_YET;
+        case legacy_hal::RTT_STATUS_FAIL_TM_TIMEOUT:
+            return RttStatus::FAIL_TM_TIMEOUT;
+        case legacy_hal::RTT_STATUS_FAIL_AP_ON_DIFF_CHANNEL:
+            return RttStatus::FAIL_AP_ON_DIFF_CHANNEL;
+        case legacy_hal::RTT_STATUS_FAIL_NO_CAPABILITY:
+            return RttStatus::FAIL_NO_CAPABILITY;
+        case legacy_hal::RTT_STATUS_ABORTED:
+            return RttStatus::ABORTED;
+        case legacy_hal::RTT_STATUS_FAIL_INVALID_TS:
+            return RttStatus::FAIL_INVALID_TS;
+        case legacy_hal::RTT_STATUS_FAIL_PROTOCOL:
+            return RttStatus::FAIL_PROTOCOL;
+        case legacy_hal::RTT_STATUS_FAIL_SCHEDULE:
+            return RttStatus::FAIL_SCHEDULE;
+        case legacy_hal::RTT_STATUS_FAIL_BUSY_TRY_LATER:
+            return RttStatus::FAIL_BUSY_TRY_LATER;
+        case legacy_hal::RTT_STATUS_INVALID_REQ:
+            return RttStatus::INVALID_REQ;
+        case legacy_hal::RTT_STATUS_NO_WIFI:
+            return RttStatus::NO_WIFI;
+        case legacy_hal::RTT_STATUS_FAIL_FTM_PARAM_OVERRIDE:
+            return RttStatus::FAIL_FTM_PARAM_OVERRIDE;
+        case legacy_hal::RTT_STATUS_NAN_RANGING_PROTOCOL_FAILURE:
+            return RttStatus::FAILURE;  // TODO: add HIDL enumeration
+        case legacy_hal::RTT_STATUS_NAN_RANGING_CONCURRENCY_NOT_SUPPORTED:
+            return RttStatus::FAILURE;  // TODO: add HIDL enumeration
+    };
+    CHECK(false) << "Unknown legacy status: " << status;
+}
+
+bool convertHidlWifiChannelInfoToLegacy(
+    const WifiChannelInfo& hidl_info,
+    legacy_hal::wifi_channel_info* legacy_info) {
+    if (!legacy_info) {
+        return false;
+    }
+    *legacy_info = {};
+    legacy_info->width = convertHidlWifiChannelWidthToLegacy(hidl_info.width);
+    legacy_info->center_freq = hidl_info.centerFreq;
+    legacy_info->center_freq0 = hidl_info.centerFreq0;
+    legacy_info->center_freq1 = hidl_info.centerFreq1;
+    return true;
+}
+
+bool convertLegacyWifiChannelInfoToHidl(
+    const legacy_hal::wifi_channel_info& legacy_info,
+    WifiChannelInfo* hidl_info) {
+    if (!hidl_info) {
+        return false;
+    }
+    *hidl_info = {};
+    hidl_info->width = convertLegacyWifiChannelWidthToHidl(legacy_info.width);
+    hidl_info->centerFreq = legacy_info.center_freq;
+    hidl_info->centerFreq0 = legacy_info.center_freq0;
+    hidl_info->centerFreq1 = legacy_info.center_freq1;
+    return true;
+}
+
+bool convertHidlRttConfigToLegacy(const RttConfig& hidl_config,
+                                  legacy_hal::wifi_rtt_config* legacy_config) {
+    if (!legacy_config) {
+        return false;
+    }
+    *legacy_config = {};
+    CHECK(hidl_config.addr.size() == sizeof(legacy_config->addr));
+    memcpy(legacy_config->addr, hidl_config.addr.data(),
+           hidl_config.addr.size());
+    legacy_config->type = convertHidlRttTypeToLegacy(hidl_config.type);
+    legacy_config->peer = convertHidlRttPeerTypeToLegacy(hidl_config.peer);
+    if (!convertHidlWifiChannelInfoToLegacy(hidl_config.channel,
+                                            &legacy_config->channel)) {
+        return false;
+    }
+    legacy_config->burst_period = hidl_config.burstPeriod;
+    legacy_config->num_burst = hidl_config.numBurst;
+    legacy_config->num_frames_per_burst = hidl_config.numFramesPerBurst;
+    legacy_config->num_retries_per_rtt_frame =
+        hidl_config.numRetriesPerRttFrame;
+    legacy_config->num_retries_per_ftmr = hidl_config.numRetriesPerFtmr;
+    legacy_config->LCI_request = hidl_config.mustRequestLci;
+    legacy_config->LCR_request = hidl_config.mustRequestLcr;
+    legacy_config->burst_duration = hidl_config.burstDuration;
+    legacy_config->preamble =
+        convertHidlRttPreambleToLegacy(hidl_config.preamble);
+    legacy_config->bw = convertHidlRttBwToLegacy(hidl_config.bw);
+    return true;
+}
+
+bool convertHidlVectorOfRttConfigToLegacy(
+    const std::vector<RttConfig>& hidl_configs,
+    std::vector<legacy_hal::wifi_rtt_config>* legacy_configs) {
+    if (!legacy_configs) {
+        return false;
+    }
+    *legacy_configs = {};
+    for (const auto& hidl_config : hidl_configs) {
+        legacy_hal::wifi_rtt_config legacy_config;
+        if (!convertHidlRttConfigToLegacy(hidl_config, &legacy_config)) {
+            return false;
+        }
+        legacy_configs->push_back(legacy_config);
+    }
+    return true;
+}
+
+bool convertHidlRttLciInformationToLegacy(
+    const RttLciInformation& hidl_info,
+    legacy_hal::wifi_lci_information* legacy_info) {
+    if (!legacy_info) {
+        return false;
+    }
+    *legacy_info = {};
+    legacy_info->latitude = hidl_info.latitude;
+    legacy_info->longitude = hidl_info.longitude;
+    legacy_info->altitude = hidl_info.altitude;
+    legacy_info->latitude_unc = hidl_info.latitudeUnc;
+    legacy_info->longitude_unc = hidl_info.longitudeUnc;
+    legacy_info->altitude_unc = hidl_info.altitudeUnc;
+    legacy_info->motion_pattern =
+        convertHidlRttMotionPatternToLegacy(hidl_info.motionPattern);
+    legacy_info->floor = hidl_info.floor;
+    legacy_info->height_above_floor = hidl_info.heightAboveFloor;
+    legacy_info->height_unc = hidl_info.heightUnc;
+    return true;
+}
+
+bool convertHidlRttLcrInformationToLegacy(
+    const RttLcrInformation& hidl_info,
+    legacy_hal::wifi_lcr_information* legacy_info) {
+    if (!legacy_info) {
+        return false;
+    }
+    *legacy_info = {};
+    CHECK(hidl_info.countryCode.size() == sizeof(legacy_info->country_code));
+    memcpy(legacy_info->country_code, hidl_info.countryCode.data(),
+           hidl_info.countryCode.size());
+    if (hidl_info.civicInfo.size() > sizeof(legacy_info->civic_info)) {
+        return false;
+    }
+    legacy_info->length = hidl_info.civicInfo.size();
+    memcpy(legacy_info->civic_info, hidl_info.civicInfo.c_str(),
+           hidl_info.civicInfo.size());
+    return true;
+}
+
+bool convertHidlRttResponderToLegacy(
+    const RttResponder& hidl_responder,
+    legacy_hal::wifi_rtt_responder* legacy_responder) {
+    if (!legacy_responder) {
+        return false;
+    }
+    *legacy_responder = {};
+    if (!convertHidlWifiChannelInfoToLegacy(hidl_responder.channel,
+                                            &legacy_responder->channel)) {
+        return false;
+    }
+    legacy_responder->preamble =
+        convertHidlRttPreambleToLegacy(hidl_responder.preamble);
+    return true;
+}
+
+bool convertLegacyRttResponderToHidl(
+    const legacy_hal::wifi_rtt_responder& legacy_responder,
+    RttResponder* hidl_responder) {
+    if (!hidl_responder) {
+        return false;
+    }
+    *hidl_responder = {};
+    if (!convertLegacyWifiChannelInfoToHidl(legacy_responder.channel,
+                                            &hidl_responder->channel)) {
+        return false;
+    }
+    hidl_responder->preamble =
+        convertLegacyRttPreambleToHidl(legacy_responder.preamble);
+    return true;
+}
+
+bool convertLegacyRttCapabilitiesToHidl(
+    const legacy_hal::wifi_rtt_capabilities& legacy_capabilities,
+    RttCapabilities* hidl_capabilities) {
+    if (!hidl_capabilities) {
+        return false;
+    }
+    *hidl_capabilities = {};
+    hidl_capabilities->rttOneSidedSupported =
+        legacy_capabilities.rtt_one_sided_supported;
+    hidl_capabilities->rttFtmSupported = legacy_capabilities.rtt_ftm_supported;
+    hidl_capabilities->lciSupported = legacy_capabilities.lci_support;
+    hidl_capabilities->lcrSupported = legacy_capabilities.lcr_support;
+    hidl_capabilities->responderSupported =
+        legacy_capabilities.responder_supported;
+    hidl_capabilities->preambleSupport = 0;
+    for (const auto flag :
+         {legacy_hal::WIFI_RTT_PREAMBLE_LEGACY,
+          legacy_hal::WIFI_RTT_PREAMBLE_HT, legacy_hal::WIFI_RTT_PREAMBLE_VHT,
+          legacy_hal::WIFI_RTT_PREAMBLE_HE}) {
+        if (legacy_capabilities.preamble_support & flag) {
+            hidl_capabilities->preambleSupport |=
+                static_cast<std::underlying_type<RttPreamble>::type>(
+                    convertLegacyRttPreambleToHidl(flag));
+        }
+    }
+    hidl_capabilities->bwSupport = 0;
+    for (const auto flag :
+         {legacy_hal::WIFI_RTT_BW_5, legacy_hal::WIFI_RTT_BW_10,
+          legacy_hal::WIFI_RTT_BW_20, legacy_hal::WIFI_RTT_BW_40,
+          legacy_hal::WIFI_RTT_BW_80, legacy_hal::WIFI_RTT_BW_160}) {
+        if (legacy_capabilities.bw_support & flag) {
+            hidl_capabilities->bwSupport |=
+                static_cast<std::underlying_type<RttBw>::type>(
+                    convertLegacyRttBwToHidl(flag));
+        }
+    }
+    hidl_capabilities->mcVersion = legacy_capabilities.mc_version;
+    return true;
+}
+
+bool convertLegacyWifiRateInfoToHidl(const legacy_hal::wifi_rate& legacy_rate,
+                                     WifiRateInfo* hidl_rate) {
+    if (!hidl_rate) {
+        return false;
+    }
+    *hidl_rate = {};
+    hidl_rate->preamble =
+        convertLegacyWifiRatePreambleToHidl(legacy_rate.preamble);
+    hidl_rate->nss = convertLegacyWifiRateNssToHidl(legacy_rate.nss);
+    hidl_rate->bw = convertLegacyWifiChannelWidthToHidl(
+        static_cast<legacy_hal::wifi_channel_width>(legacy_rate.bw));
+    hidl_rate->rateMcsIdx = legacy_rate.rateMcsIdx;
+    hidl_rate->bitRateInKbps = legacy_rate.bitrate;
+    return true;
+}
+
+bool convertLegacyRttResultToHidl(
+    const legacy_hal::wifi_rtt_result& legacy_result, RttResult* hidl_result) {
+    if (!hidl_result) {
+        return false;
+    }
+    *hidl_result = {};
+    CHECK(sizeof(legacy_result.addr) == hidl_result->addr.size());
+    memcpy(hidl_result->addr.data(), legacy_result.addr,
+           sizeof(legacy_result.addr));
+    hidl_result->burstNum = legacy_result.burst_num;
+    hidl_result->measurementNumber = legacy_result.measurement_number;
+    hidl_result->successNumber = legacy_result.success_number;
+    hidl_result->numberPerBurstPeer = legacy_result.number_per_burst_peer;
+    hidl_result->status = convertLegacyRttStatusToHidl(legacy_result.status);
+    hidl_result->retryAfterDuration = legacy_result.retry_after_duration;
+    hidl_result->type = convertLegacyRttTypeToHidl(legacy_result.type);
+    hidl_result->rssi = legacy_result.rssi;
+    hidl_result->rssiSpread = legacy_result.rssi_spread;
+    if (!convertLegacyWifiRateInfoToHidl(legacy_result.tx_rate,
+                                         &hidl_result->txRate)) {
+        return false;
+    }
+    if (!convertLegacyWifiRateInfoToHidl(legacy_result.rx_rate,
+                                         &hidl_result->rxRate)) {
+        return false;
+    }
+    hidl_result->rtt = legacy_result.rtt;
+    hidl_result->rttSd = legacy_result.rtt_sd;
+    hidl_result->rttSpread = legacy_result.rtt_spread;
+    hidl_result->distanceInMm = legacy_result.distance_mm;
+    hidl_result->distanceSdInMm = legacy_result.distance_sd_mm;
+    hidl_result->distanceSpreadInMm = legacy_result.distance_spread_mm;
+    hidl_result->timeStampInUs = legacy_result.ts;
+    hidl_result->burstDurationInMs = legacy_result.burst_duration;
+    hidl_result->negotiatedBurstNum = legacy_result.negotiated_burst_num;
+    if (legacy_result.LCI &&
+        !convertLegacyIeToHidl(*legacy_result.LCI, &hidl_result->lci)) {
+        return false;
+    }
+    if (legacy_result.LCR &&
+        !convertLegacyIeToHidl(*legacy_result.LCR, &hidl_result->lcr)) {
+        return false;
+    }
+    return true;
+}
+
+bool convertLegacyVectorOfRttResultToHidl(
+    const std::vector<const legacy_hal::wifi_rtt_result*>& legacy_results,
+    std::vector<RttResult>* hidl_results) {
+    if (!hidl_results) {
+        return false;
+    }
+    *hidl_results = {};
+    for (const auto legacy_result : legacy_results) {
+        RttResult hidl_result;
+        if (!convertLegacyRttResultToHidl(*legacy_result, &hidl_result)) {
+            return false;
+        }
+        hidl_results->push_back(hidl_result);
+    }
+    return true;
+}
+}  // namespace hidl_struct_util
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.4/default/hidl_struct_util.h b/wifi/1.4/default/hidl_struct_util.h
new file mode 100644
index 0000000..d040c1f
--- /dev/null
+++ b/wifi/1.4/default/hidl_struct_util.h
@@ -0,0 +1,196 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef HIDL_STRUCT_UTIL_H_
+#define HIDL_STRUCT_UTIL_H_
+
+#include <vector>
+
+#include <android/hardware/wifi/1.0/IWifiChip.h>
+#include <android/hardware/wifi/1.0/types.h>
+#include <android/hardware/wifi/1.2/types.h>
+#include <android/hardware/wifi/1.3/IWifiChip.h>
+#include <android/hardware/wifi/1.3/types.h>
+#include <android/hardware/wifi/1.4/IWifiChipEventCallback.h>
+#include <android/hardware/wifi/1.4/types.h>
+
+#include "wifi_legacy_hal.h"
+
+/**
+ * This file contains a bunch of functions to convert structs from the legacy
+ * HAL to HIDL and vice versa.
+ * TODO(b/32093047): Add unit tests for these conversion methods in the VTS test
+ * suite.
+ */
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+namespace hidl_struct_util {
+using namespace android::hardware::wifi::V1_0;
+
+// Chip conversion methods.
+bool convertLegacyFeaturesToHidlChipCapabilities(
+    uint32_t legacy_feature_set, uint32_t legacy_logger_feature_set,
+    uint32_t* hidl_caps);
+bool convertLegacyDebugRingBufferStatusToHidl(
+    const legacy_hal::wifi_ring_buffer_status& legacy_status,
+    WifiDebugRingBufferStatus* hidl_status);
+bool convertLegacyVectorOfDebugRingBufferStatusToHidl(
+    const std::vector<legacy_hal::wifi_ring_buffer_status>& legacy_status_vec,
+    std::vector<WifiDebugRingBufferStatus>* hidl_status_vec);
+bool convertLegacyWakeReasonStatsToHidl(
+    const legacy_hal::WakeReasonStats& legacy_stats,
+    WifiDebugHostWakeReasonStats* hidl_stats);
+legacy_hal::wifi_power_scenario convertHidlTxPowerScenarioToLegacy(
+    V1_1::IWifiChip::TxPowerScenario hidl_scenario);
+legacy_hal::wifi_latency_mode convertHidlLatencyModeToLegacy(
+    V1_3::IWifiChip::LatencyMode hidl_latency_mode);
+legacy_hal::wifi_power_scenario convertHidlTxPowerScenarioToLegacy_1_2(
+    V1_2::IWifiChip::TxPowerScenario hidl_scenario);
+bool convertLegacyWifiMacInfosToHidl(
+    const std::vector<legacy_hal::WifiMacInfo>& legacy_mac_infos,
+    std::vector<IWifiChipEventCallback::RadioModeInfo>* hidl_radio_mode_infos);
+
+// STA iface conversion methods.
+bool convertLegacyFeaturesToHidlStaCapabilities(
+    uint64_t legacy_feature_set, uint32_t legacy_logger_feature_set,
+    uint32_t* hidl_caps);
+bool convertLegacyApfCapabilitiesToHidl(
+    const legacy_hal::PacketFilterCapabilities& legacy_caps,
+    StaApfPacketFilterCapabilities* hidl_caps);
+bool convertLegacyGscanCapabilitiesToHidl(
+    const legacy_hal::wifi_gscan_capabilities& legacy_caps,
+    StaBackgroundScanCapabilities* hidl_caps);
+legacy_hal::wifi_band convertHidlWifiBandToLegacy(V1_0::WifiBand band);
+bool convertHidlGscanParamsToLegacy(
+    const StaBackgroundScanParameters& hidl_scan_params,
+    legacy_hal::wifi_scan_cmd_params* legacy_scan_params);
+// |has_ie_data| indicates whether or not the wifi_scan_result includes 802.11
+// Information Elements (IEs)
+bool convertLegacyGscanResultToHidl(
+    const legacy_hal::wifi_scan_result& legacy_scan_result, bool has_ie_data,
+    StaScanResult* hidl_scan_result);
+// |cached_results| is assumed to not include IEs.
+bool convertLegacyVectorOfCachedGscanResultsToHidl(
+    const std::vector<legacy_hal::wifi_cached_scan_results>&
+        legacy_cached_scan_results,
+    std::vector<StaScanData>* hidl_scan_datas);
+bool convertLegacyLinkLayerStatsToHidl(
+    const legacy_hal::LinkLayerStats& legacy_stats,
+    V1_3::StaLinkLayerStats* hidl_stats);
+bool convertLegacyRoamingCapabilitiesToHidl(
+    const legacy_hal::wifi_roaming_capabilities& legacy_caps,
+    StaRoamingCapabilities* hidl_caps);
+bool convertHidlRoamingConfigToLegacy(
+    const StaRoamingConfig& hidl_config,
+    legacy_hal::wifi_roaming_config* legacy_config);
+legacy_hal::fw_roaming_state_t convertHidlRoamingStateToLegacy(
+    StaRoamingState state);
+bool convertLegacyVectorOfDebugTxPacketFateToHidl(
+    const std::vector<legacy_hal::wifi_tx_report>& legacy_fates,
+    std::vector<WifiDebugTxPacketFateReport>* hidl_fates);
+bool convertLegacyVectorOfDebugRxPacketFateToHidl(
+    const std::vector<legacy_hal::wifi_rx_report>& legacy_fates,
+    std::vector<WifiDebugRxPacketFateReport>* hidl_fates);
+
+// NAN iface conversion methods.
+void convertToWifiNanStatus(legacy_hal::NanStatusType type, const char* str,
+                            size_t max_len, WifiNanStatus* wifiNanStatus);
+bool convertHidlNanEnableRequestToLegacy(
+    const NanEnableRequest& hidl_request,
+    legacy_hal::NanEnableRequest* legacy_request);
+bool convertHidlNanConfigRequestToLegacy(
+    const NanConfigRequest& hidl_request,
+    legacy_hal::NanConfigRequest* legacy_request);
+bool convertHidlNanEnableRequest_1_4ToLegacy(
+    const NanEnableRequest& hidl_request1,
+    const V1_2::NanConfigRequestSupplemental& hidl_request2,
+    legacy_hal::NanEnableRequest* legacy_request);
+bool convertHidlNanConfigRequest_1_4ToLegacy(
+    const NanConfigRequest& hidl_request1,
+    const V1_2::NanConfigRequestSupplemental& hidl_request2,
+    legacy_hal::NanConfigRequest* legacy_request);
+bool convertHidlNanPublishRequestToLegacy(
+    const NanPublishRequest& hidl_request,
+    legacy_hal::NanPublishRequest* legacy_request);
+bool convertHidlNanSubscribeRequestToLegacy(
+    const NanSubscribeRequest& hidl_request,
+    legacy_hal::NanSubscribeRequest* legacy_request);
+bool convertHidlNanTransmitFollowupRequestToLegacy(
+    const NanTransmitFollowupRequest& hidl_request,
+    legacy_hal::NanTransmitFollowupRequest* legacy_request);
+bool convertHidlNanDataPathInitiatorRequestToLegacy(
+    const NanInitiateDataPathRequest& hidl_request,
+    legacy_hal::NanDataPathInitiatorRequest* legacy_request);
+bool convertHidlNanDataPathIndicationResponseToLegacy(
+    const NanRespondToDataPathIndicationRequest& hidl_response,
+    legacy_hal::NanDataPathIndicationResponse* legacy_response);
+bool convertLegacyNanResponseHeaderToHidl(
+    const legacy_hal::NanResponseMsg& legacy_response,
+    WifiNanStatus* wifiNanStatus);
+bool convertLegacyNanCapabilitiesResponseToHidl(
+    const legacy_hal::NanCapabilities& legacy_response,
+    NanCapabilities* hidl_response);
+bool convertLegacyNanMatchIndToHidl(const legacy_hal::NanMatchInd& legacy_ind,
+                                    NanMatchInd* hidl_ind);
+bool convertLegacyNanFollowupIndToHidl(
+    const legacy_hal::NanFollowupInd& legacy_ind,
+    NanFollowupReceivedInd* hidl_ind);
+bool convertLegacyNanDataPathRequestIndToHidl(
+    const legacy_hal::NanDataPathRequestInd& legacy_ind,
+    NanDataPathRequestInd* hidl_ind);
+bool convertLegacyNanDataPathConfirmIndToHidl(
+    const legacy_hal::NanDataPathConfirmInd& legacy_ind,
+    V1_2::NanDataPathConfirmInd* hidl_ind);
+bool convertLegacyNanDataPathScheduleUpdateIndToHidl(
+    const legacy_hal::NanDataPathScheduleUpdateInd& legacy_ind,
+    V1_2::NanDataPathScheduleUpdateInd* hidl_ind);
+
+// RTT controller conversion methods.
+bool convertHidlVectorOfRttConfigToLegacy(
+    const std::vector<RttConfig>& hidl_configs,
+    std::vector<legacy_hal::wifi_rtt_config>* legacy_configs);
+bool convertHidlRttLciInformationToLegacy(
+    const RttLciInformation& hidl_info,
+    legacy_hal::wifi_lci_information* legacy_info);
+bool convertHidlRttLcrInformationToLegacy(
+    const RttLcrInformation& hidl_info,
+    legacy_hal::wifi_lcr_information* legacy_info);
+bool convertHidlRttResponderToLegacy(
+    const RttResponder& hidl_responder,
+    legacy_hal::wifi_rtt_responder* legacy_responder);
+bool convertHidlWifiChannelInfoToLegacy(
+    const WifiChannelInfo& hidl_info,
+    legacy_hal::wifi_channel_info* legacy_info);
+bool convertLegacyRttResponderToHidl(
+    const legacy_hal::wifi_rtt_responder& legacy_responder,
+    RttResponder* hidl_responder);
+bool convertLegacyRttCapabilitiesToHidl(
+    const legacy_hal::wifi_rtt_capabilities& legacy_capabilities,
+    RttCapabilities* hidl_capabilities);
+bool convertLegacyVectorOfRttResultToHidl(
+    const std::vector<const legacy_hal::wifi_rtt_result*>& legacy_results,
+    std::vector<RttResult>* hidl_results);
+}  // namespace hidl_struct_util
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // HIDL_STRUCT_UTIL_H_
diff --git a/wifi/1.4/default/hidl_sync_util.cpp b/wifi/1.4/default/hidl_sync_util.cpp
new file mode 100644
index 0000000..593a3bc
--- /dev/null
+++ b/wifi/1.4/default/hidl_sync_util.cpp
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "hidl_sync_util.h"
+
+namespace {
+std::recursive_mutex g_mutex;
+}  // namespace
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+namespace hidl_sync_util {
+
+std::unique_lock<std::recursive_mutex> acquireGlobalLock() {
+    return std::unique_lock<std::recursive_mutex>{g_mutex};
+}
+
+}  // namespace hidl_sync_util
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.4/default/hidl_sync_util.h b/wifi/1.4/default/hidl_sync_util.h
new file mode 100644
index 0000000..0244421
--- /dev/null
+++ b/wifi/1.4/default/hidl_sync_util.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef HIDL_SYNC_UTIL_H_
+#define HIDL_SYNC_UTIL_H_
+
+#include <mutex>
+
+// Utility that provides a global lock to synchronize access between
+// the HIDL thread and the legacy HAL's event loop.
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+namespace hidl_sync_util {
+std::unique_lock<std::recursive_mutex> acquireGlobalLock();
+}  // namespace hidl_sync_util
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+#endif  // HIDL_SYNC_UTIL_H_
diff --git a/wifi/1.4/default/ringbuffer.cpp b/wifi/1.4/default/ringbuffer.cpp
new file mode 100644
index 0000000..0fe8ef4
--- /dev/null
+++ b/wifi/1.4/default/ringbuffer.cpp
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+
+#include "ringbuffer.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+
+Ringbuffer::Ringbuffer(size_t maxSize) : size_(0), maxSize_(maxSize) {}
+
+void Ringbuffer::append(const std::vector<uint8_t>& input) {
+    if (input.size() == 0) {
+        return;
+    }
+    if (input.size() > maxSize_) {
+        LOG(INFO) << "Oversized message of " << input.size()
+                  << " bytes is dropped";
+        return;
+    }
+    data_.push_back(input);
+    size_ += input.size() * sizeof(input[0]);
+    while (size_ > maxSize_) {
+        size_ -= data_.front().size() * sizeof(data_.front()[0]);
+        data_.pop_front();
+    }
+}
+
+const std::list<std::vector<uint8_t>>& Ringbuffer::getData() const {
+    return data_;
+}
+
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.4/default/ringbuffer.h b/wifi/1.4/default/ringbuffer.h
new file mode 100644
index 0000000..ddce648
--- /dev/null
+++ b/wifi/1.4/default/ringbuffer.h
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef RINGBUFFER_H_
+#define RINGBUFFER_H_
+
+#include <list>
+#include <vector>
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+
+/**
+ * Ringbuffer object used to store debug data.
+ */
+class Ringbuffer {
+   public:
+    explicit Ringbuffer(size_t maxSize);
+
+    // Appends the data buffer and deletes from the front until buffer is
+    // within |maxSize_|.
+    void append(const std::vector<uint8_t>& input);
+    const std::list<std::vector<uint8_t>>& getData() const;
+
+   private:
+    std::list<std::vector<uint8_t>> data_;
+    size_t size_;
+    size_t maxSize_;
+};
+
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // RINGBUFFER_H_
diff --git a/wifi/1.4/default/service.cpp b/wifi/1.4/default/service.cpp
new file mode 100644
index 0000000..3f7f609
--- /dev/null
+++ b/wifi/1.4/default/service.cpp
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <hidl/HidlLazyUtils.h>
+#include <hidl/HidlTransportSupport.h>
+#include <utils/Looper.h>
+#include <utils/StrongPointer.h>
+
+#include "wifi.h"
+#include "wifi_feature_flags.h"
+#include "wifi_legacy_hal.h"
+#include "wifi_mode_controller.h"
+
+using android::hardware::configureRpcThreadpool;
+using android::hardware::joinRpcThreadpool;
+using android::hardware::LazyServiceRegistrar;
+using android::hardware::wifi::V1_4::implementation::feature_flags::
+    WifiFeatureFlags;
+using android::hardware::wifi::V1_4::implementation::iface_util::WifiIfaceUtil;
+using android::hardware::wifi::V1_4::implementation::legacy_hal::WifiLegacyHal;
+using android::hardware::wifi::V1_4::implementation::mode_controller::
+    WifiModeController;
+
+#ifdef LAZY_SERVICE
+const bool kLazyService = true;
+#else
+const bool kLazyService = false;
+#endif
+
+int main(int /*argc*/, char** argv) {
+    android::base::InitLogging(
+        argv, android::base::LogdLogger(android::base::SYSTEM));
+    LOG(INFO) << "Wifi Hal is booting up...";
+
+    configureRpcThreadpool(1, true /* callerWillJoin */);
+
+    const auto iface_tool =
+        std::make_shared<android::wifi_system::InterfaceTool>();
+    // Setup hwbinder service
+    android::sp<android::hardware::wifi::V1_4::IWifi> service =
+        new android::hardware::wifi::V1_4::implementation::Wifi(
+            iface_tool, std::make_shared<WifiLegacyHal>(iface_tool),
+            std::make_shared<WifiModeController>(),
+            std::make_shared<WifiIfaceUtil>(iface_tool),
+            std::make_shared<WifiFeatureFlags>());
+    if (kLazyService) {
+        auto registrar = LazyServiceRegistrar::getInstance();
+        CHECK_EQ(registrar.registerService(service), android::NO_ERROR)
+            << "Failed to register wifi HAL";
+    } else {
+        CHECK_EQ(service->registerAsService(), android::NO_ERROR)
+            << "Failed to register wifi HAL";
+    }
+
+    joinRpcThreadpool();
+
+    LOG(INFO) << "Wifi Hal is terminating...";
+    return 0;
+}
diff --git a/wifi/1.4/default/tests/hidl_struct_util_unit_tests.cpp b/wifi/1.4/default/tests/hidl_struct_util_unit_tests.cpp
new file mode 100644
index 0000000..b71d549
--- /dev/null
+++ b/wifi/1.4/default/tests/hidl_struct_util_unit_tests.cpp
@@ -0,0 +1,294 @@
+/*
+ * Copyright (C) 2017, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android-base/macros.h>
+#include <gmock/gmock.h>
+
+#undef NAN
+#include "hidl_struct_util.h"
+
+using testing::Test;
+
+namespace {
+constexpr uint32_t kMacId1 = 1;
+constexpr uint32_t kMacId2 = 2;
+constexpr uint32_t kIfaceChannel1 = 3;
+constexpr uint32_t kIfaceChannel2 = 5;
+constexpr char kIfaceName1[] = "wlan0";
+constexpr char kIfaceName2[] = "wlan1";
+}  // namespace
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+using namespace android::hardware::wifi::V1_0;
+using ::android::hardware::wifi::V1_0::WifiChannelWidthInMhz;
+
+class HidlStructUtilTest : public Test {};
+
+TEST_F(HidlStructUtilTest, CanConvertLegacyWifiMacInfosToHidlWithOneMac) {
+    std::vector<legacy_hal::WifiMacInfo> legacy_mac_infos;
+    legacy_hal::WifiMacInfo legacy_mac_info1 = {
+        .wlan_mac_id = kMacId1,
+        .mac_band =
+            legacy_hal::WLAN_MAC_5_0_BAND | legacy_hal::WLAN_MAC_2_4_BAND};
+    legacy_hal::WifiIfaceInfo legacy_iface_info1 = {.name = kIfaceName1,
+                                                    .channel = kIfaceChannel1};
+    legacy_hal::WifiIfaceInfo legacy_iface_info2 = {.name = kIfaceName2,
+                                                    .channel = kIfaceChannel2};
+    legacy_mac_info1.iface_infos.push_back(legacy_iface_info1);
+    legacy_mac_info1.iface_infos.push_back(legacy_iface_info2);
+    legacy_mac_infos.push_back(legacy_mac_info1);
+
+    std::vector<IWifiChipEventCallback::RadioModeInfo> hidl_radio_mode_infos;
+    ASSERT_TRUE(hidl_struct_util::convertLegacyWifiMacInfosToHidl(
+        legacy_mac_infos, &hidl_radio_mode_infos));
+
+    ASSERT_EQ(1u, hidl_radio_mode_infos.size());
+    auto hidl_radio_mode_info1 = hidl_radio_mode_infos[0];
+    EXPECT_EQ(legacy_mac_info1.wlan_mac_id, hidl_radio_mode_info1.radioId);
+    EXPECT_EQ(WifiBand::BAND_24GHZ_5GHZ, hidl_radio_mode_info1.bandInfo);
+    ASSERT_EQ(2u, hidl_radio_mode_info1.ifaceInfos.size());
+    auto hidl_iface_info1 = hidl_radio_mode_info1.ifaceInfos[0];
+    EXPECT_EQ(legacy_iface_info1.name, hidl_iface_info1.name);
+    EXPECT_EQ(static_cast<uint32_t>(legacy_iface_info1.channel),
+              hidl_iface_info1.channel);
+    auto hidl_iface_info2 = hidl_radio_mode_info1.ifaceInfos[1];
+    EXPECT_EQ(legacy_iface_info2.name, hidl_iface_info2.name);
+    EXPECT_EQ(static_cast<uint32_t>(legacy_iface_info2.channel),
+              hidl_iface_info2.channel);
+}
+
+TEST_F(HidlStructUtilTest, CanConvertLegacyWifiMacInfosToHidlWithTwoMac) {
+    std::vector<legacy_hal::WifiMacInfo> legacy_mac_infos;
+    legacy_hal::WifiMacInfo legacy_mac_info1 = {
+        .wlan_mac_id = kMacId1, .mac_band = legacy_hal::WLAN_MAC_5_0_BAND};
+    legacy_hal::WifiIfaceInfo legacy_iface_info1 = {.name = kIfaceName1,
+                                                    .channel = kIfaceChannel1};
+    legacy_hal::WifiMacInfo legacy_mac_info2 = {
+        .wlan_mac_id = kMacId2, .mac_band = legacy_hal::WLAN_MAC_2_4_BAND};
+    legacy_hal::WifiIfaceInfo legacy_iface_info2 = {.name = kIfaceName2,
+                                                    .channel = kIfaceChannel2};
+    legacy_mac_info1.iface_infos.push_back(legacy_iface_info1);
+    legacy_mac_infos.push_back(legacy_mac_info1);
+    legacy_mac_info2.iface_infos.push_back(legacy_iface_info2);
+    legacy_mac_infos.push_back(legacy_mac_info2);
+
+    std::vector<IWifiChipEventCallback::RadioModeInfo> hidl_radio_mode_infos;
+    ASSERT_TRUE(hidl_struct_util::convertLegacyWifiMacInfosToHidl(
+        legacy_mac_infos, &hidl_radio_mode_infos));
+
+    ASSERT_EQ(2u, hidl_radio_mode_infos.size());
+
+    // Find mac info 1.
+    const auto hidl_radio_mode_info1 = std::find_if(
+        hidl_radio_mode_infos.begin(), hidl_radio_mode_infos.end(),
+        [&legacy_mac_info1](const IWifiChipEventCallback::RadioModeInfo& x) {
+            return x.radioId == legacy_mac_info1.wlan_mac_id;
+        });
+    ASSERT_NE(hidl_radio_mode_infos.end(), hidl_radio_mode_info1);
+    EXPECT_EQ(WifiBand::BAND_5GHZ, hidl_radio_mode_info1->bandInfo);
+    ASSERT_EQ(1u, hidl_radio_mode_info1->ifaceInfos.size());
+    auto hidl_iface_info1 = hidl_radio_mode_info1->ifaceInfos[0];
+    EXPECT_EQ(legacy_iface_info1.name, hidl_iface_info1.name);
+    EXPECT_EQ(static_cast<uint32_t>(legacy_iface_info1.channel),
+              hidl_iface_info1.channel);
+
+    // Find mac info 2.
+    const auto hidl_radio_mode_info2 = std::find_if(
+        hidl_radio_mode_infos.begin(), hidl_radio_mode_infos.end(),
+        [&legacy_mac_info2](const IWifiChipEventCallback::RadioModeInfo& x) {
+            return x.radioId == legacy_mac_info2.wlan_mac_id;
+        });
+    ASSERT_NE(hidl_radio_mode_infos.end(), hidl_radio_mode_info2);
+    EXPECT_EQ(WifiBand::BAND_24GHZ, hidl_radio_mode_info2->bandInfo);
+    ASSERT_EQ(1u, hidl_radio_mode_info2->ifaceInfos.size());
+    auto hidl_iface_info2 = hidl_radio_mode_info2->ifaceInfos[0];
+    EXPECT_EQ(legacy_iface_info2.name, hidl_iface_info2.name);
+    EXPECT_EQ(static_cast<uint32_t>(legacy_iface_info2.channel),
+              hidl_iface_info2.channel);
+}
+
+TEST_F(HidlStructUtilTest, canConvertLegacyLinkLayerStatsToHidl) {
+    legacy_hal::LinkLayerStats legacy_stats{};
+    legacy_stats.radios.push_back(legacy_hal::LinkLayerRadioStats{});
+    legacy_stats.radios.push_back(legacy_hal::LinkLayerRadioStats{});
+    legacy_stats.iface.beacon_rx = rand();
+    legacy_stats.iface.rssi_mgmt = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].rx_mpdu = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].tx_mpdu = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].mpdu_lost = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].retries = rand();
+
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].rx_mpdu = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].tx_mpdu = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].mpdu_lost = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].retries = rand();
+
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].rx_mpdu = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].tx_mpdu = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].mpdu_lost = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].retries = rand();
+
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].rx_mpdu = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].tx_mpdu = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].mpdu_lost = rand();
+    legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].retries = rand();
+
+    for (auto& radio : legacy_stats.radios) {
+        radio.stats.on_time = rand();
+        radio.stats.tx_time = rand();
+        radio.stats.rx_time = rand();
+        radio.stats.on_time_scan = rand();
+        radio.stats.on_time_nbd = rand();
+        radio.stats.on_time_gscan = rand();
+        radio.stats.on_time_roam_scan = rand();
+        radio.stats.on_time_pno_scan = rand();
+        radio.stats.on_time_hs20 = rand();
+        for (int i = 0; i < 4; i++) {
+            radio.tx_time_per_levels.push_back(rand());
+        }
+
+        legacy_hal::wifi_channel_stat channel_stat1 = {
+            .channel = {legacy_hal::WIFI_CHAN_WIDTH_20, 2437, 2437, 0},
+            .on_time = 0x1111,
+            .cca_busy_time = 0x55,
+        };
+        legacy_hal::wifi_channel_stat channel_stat2 = {
+            .channel = {legacy_hal::WIFI_CHAN_WIDTH_20, 5180, 5180, 0},
+            .on_time = 0x2222,
+            .cca_busy_time = 0x66,
+        };
+        radio.channel_stats.push_back(channel_stat1);
+        radio.channel_stats.push_back(channel_stat2);
+    }
+
+    V1_3::StaLinkLayerStats converted{};
+    hidl_struct_util::convertLegacyLinkLayerStatsToHidl(legacy_stats,
+                                                        &converted);
+    EXPECT_EQ(legacy_stats.iface.beacon_rx, converted.iface.beaconRx);
+    EXPECT_EQ(legacy_stats.iface.rssi_mgmt, converted.iface.avgRssiMgmt);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].rx_mpdu,
+              converted.iface.wmeBePktStats.rxMpdu);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].tx_mpdu,
+              converted.iface.wmeBePktStats.txMpdu);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].mpdu_lost,
+              converted.iface.wmeBePktStats.lostMpdu);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BE].retries,
+              converted.iface.wmeBePktStats.retries);
+
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].rx_mpdu,
+              converted.iface.wmeBkPktStats.rxMpdu);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].tx_mpdu,
+              converted.iface.wmeBkPktStats.txMpdu);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].mpdu_lost,
+              converted.iface.wmeBkPktStats.lostMpdu);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_BK].retries,
+              converted.iface.wmeBkPktStats.retries);
+
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].rx_mpdu,
+              converted.iface.wmeViPktStats.rxMpdu);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].tx_mpdu,
+              converted.iface.wmeViPktStats.txMpdu);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].mpdu_lost,
+              converted.iface.wmeViPktStats.lostMpdu);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VI].retries,
+              converted.iface.wmeViPktStats.retries);
+
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].rx_mpdu,
+              converted.iface.wmeVoPktStats.rxMpdu);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].tx_mpdu,
+              converted.iface.wmeVoPktStats.txMpdu);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].mpdu_lost,
+              converted.iface.wmeVoPktStats.lostMpdu);
+    EXPECT_EQ(legacy_stats.iface.ac[legacy_hal::WIFI_AC_VO].retries,
+              converted.iface.wmeVoPktStats.retries);
+
+    EXPECT_EQ(legacy_stats.radios.size(), converted.radios.size());
+    for (size_t i = 0; i < legacy_stats.radios.size(); i++) {
+        EXPECT_EQ(legacy_stats.radios[i].stats.on_time,
+                  converted.radios[i].V1_0.onTimeInMs);
+        EXPECT_EQ(legacy_stats.radios[i].stats.tx_time,
+                  converted.radios[i].V1_0.txTimeInMs);
+        EXPECT_EQ(legacy_stats.radios[i].stats.rx_time,
+                  converted.radios[i].V1_0.rxTimeInMs);
+        EXPECT_EQ(legacy_stats.radios[i].stats.on_time_scan,
+                  converted.radios[i].V1_0.onTimeInMsForScan);
+        EXPECT_EQ(legacy_stats.radios[i].tx_time_per_levels.size(),
+                  converted.radios[i].V1_0.txTimeInMsPerLevel.size());
+        for (size_t j = 0; j < legacy_stats.radios[i].tx_time_per_levels.size();
+             j++) {
+            EXPECT_EQ(legacy_stats.radios[i].tx_time_per_levels[j],
+                      converted.radios[i].V1_0.txTimeInMsPerLevel[j]);
+        }
+        EXPECT_EQ(legacy_stats.radios[i].stats.on_time_nbd,
+                  converted.radios[i].onTimeInMsForNanScan);
+        EXPECT_EQ(legacy_stats.radios[i].stats.on_time_gscan,
+                  converted.radios[i].onTimeInMsForBgScan);
+        EXPECT_EQ(legacy_stats.radios[i].stats.on_time_roam_scan,
+                  converted.radios[i].onTimeInMsForRoamScan);
+        EXPECT_EQ(legacy_stats.radios[i].stats.on_time_pno_scan,
+                  converted.radios[i].onTimeInMsForPnoScan);
+        EXPECT_EQ(legacy_stats.radios[i].stats.on_time_hs20,
+                  converted.radios[i].onTimeInMsForHs20Scan);
+        EXPECT_EQ(legacy_stats.radios[i].channel_stats.size(),
+                  converted.radios[i].channelStats.size());
+        for (size_t k = 0; k < legacy_stats.radios[i].channel_stats.size();
+             k++) {
+            auto& legacy_channel_st = legacy_stats.radios[i].channel_stats[k];
+            EXPECT_EQ(WifiChannelWidthInMhz::WIDTH_20,
+                      converted.radios[i].channelStats[k].channel.width);
+            EXPECT_EQ(WifiChannelInMhz(legacy_channel_st.channel.center_freq),
+                      converted.radios[i].channelStats[k].channel.centerFreq);
+            EXPECT_EQ(WifiChannelInMhz(legacy_channel_st.channel.center_freq0),
+                      converted.radios[i].channelStats[k].channel.centerFreq0);
+            EXPECT_EQ(WifiChannelInMhz(legacy_channel_st.channel.center_freq1),
+                      converted.radios[i].channelStats[k].channel.centerFreq1);
+            EXPECT_EQ(legacy_channel_st.cca_busy_time,
+                      converted.radios[i].channelStats[k].ccaBusyTimeInMs);
+            EXPECT_EQ(legacy_channel_st.on_time,
+                      converted.radios[i].channelStats[k].onTimeInMs);
+        }
+    }
+}
+
+TEST_F(HidlStructUtilTest, CanConvertLegacyFeaturesToHidl) {
+    using HidlChipCaps = V1_3::IWifiChip::ChipCapabilityMask;
+
+    uint32_t hidle_caps;
+
+    uint32_t legacy_feature_set =
+        WIFI_FEATURE_D2D_RTT | WIFI_FEATURE_SET_LATENCY_MODE;
+    uint32_t legacy_logger_feature_set =
+        legacy_hal::WIFI_LOGGER_DRIVER_DUMP_SUPPORTED;
+
+    ASSERT_TRUE(hidl_struct_util::convertLegacyFeaturesToHidlChipCapabilities(
+        legacy_feature_set, legacy_logger_feature_set, &hidle_caps));
+
+    EXPECT_EQ(HidlChipCaps::DEBUG_RING_BUFFER_VENDOR_DATA |
+                  HidlChipCaps::DEBUG_HOST_WAKE_REASON_STATS |
+                  HidlChipCaps::DEBUG_ERROR_ALERTS | HidlChipCaps::D2D_RTT |
+                  HidlChipCaps::SET_LATENCY_MODE |
+                  HidlChipCaps::DEBUG_MEMORY_DRIVER_DUMP,
+              hidle_caps);
+}
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.3/default/tests/main.cpp b/wifi/1.4/default/tests/main.cpp
similarity index 100%
rename from wifi/1.3/default/tests/main.cpp
rename to wifi/1.4/default/tests/main.cpp
diff --git a/wifi/1.3/default/tests/mock_interface_tool.cpp b/wifi/1.4/default/tests/mock_interface_tool.cpp
similarity index 100%
rename from wifi/1.3/default/tests/mock_interface_tool.cpp
rename to wifi/1.4/default/tests/mock_interface_tool.cpp
diff --git a/wifi/1.3/default/tests/mock_interface_tool.h b/wifi/1.4/default/tests/mock_interface_tool.h
similarity index 100%
rename from wifi/1.3/default/tests/mock_interface_tool.h
rename to wifi/1.4/default/tests/mock_interface_tool.h
diff --git a/wifi/1.4/default/tests/mock_wifi_feature_flags.cpp b/wifi/1.4/default/tests/mock_wifi_feature_flags.cpp
new file mode 100644
index 0000000..b1fa432
--- /dev/null
+++ b/wifi/1.4/default/tests/mock_wifi_feature_flags.cpp
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gmock/gmock.h>
+
+#include "mock_wifi_feature_flags.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+namespace feature_flags {
+
+MockWifiFeatureFlags::MockWifiFeatureFlags() {}
+
+}  // namespace feature_flags
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.4/default/tests/mock_wifi_feature_flags.h b/wifi/1.4/default/tests/mock_wifi_feature_flags.h
new file mode 100644
index 0000000..72d2304
--- /dev/null
+++ b/wifi/1.4/default/tests/mock_wifi_feature_flags.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef MOCK_WIFI_FEATURE_FLAGS_H_
+#define MOCK_WIFI_FEATURE_FLAGS_H_
+
+#include <gmock/gmock.h>
+#undef NAN  // This is weird, NAN is defined in bionic/libc/include/math.h:38
+
+#include "wifi_feature_flags.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+namespace feature_flags {
+
+class MockWifiFeatureFlags : public WifiFeatureFlags {
+   public:
+    MockWifiFeatureFlags();
+
+    MOCK_METHOD0(getChipModes, std::vector<V1_0::IWifiChip::ChipMode>());
+    MOCK_METHOD0(isApMacRandomizationDisabled, bool());
+};
+
+}  // namespace feature_flags
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // MOCK_WIFI_FEATURE_FLAGS_H_
diff --git a/wifi/1.4/default/tests/mock_wifi_iface_util.cpp b/wifi/1.4/default/tests/mock_wifi_iface_util.cpp
new file mode 100644
index 0000000..0968569
--- /dev/null
+++ b/wifi/1.4/default/tests/mock_wifi_iface_util.cpp
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android-base/macros.h>
+#include <gmock/gmock.h>
+
+#undef NAN  // This is weird, NAN is defined in bionic/libc/include/math.h:38
+#include "mock_wifi_iface_util.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+namespace iface_util {
+
+MockWifiIfaceUtil::MockWifiIfaceUtil(
+    const std::weak_ptr<wifi_system::InterfaceTool> iface_tool)
+    : WifiIfaceUtil(iface_tool) {}
+}  // namespace iface_util
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.4/default/tests/mock_wifi_iface_util.h b/wifi/1.4/default/tests/mock_wifi_iface_util.h
new file mode 100644
index 0000000..6cc81e4
--- /dev/null
+++ b/wifi/1.4/default/tests/mock_wifi_iface_util.h
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef MOCK_WIFI_IFACE_UTIL_H_
+#define MOCK_WIFI_IFACE_UTIL_H_
+
+#include <gmock/gmock.h>
+
+#include "wifi_iface_util.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+namespace iface_util {
+
+class MockWifiIfaceUtil : public WifiIfaceUtil {
+   public:
+    MockWifiIfaceUtil(
+        const std::weak_ptr<wifi_system::InterfaceTool> iface_tool);
+    MOCK_METHOD1(getFactoryMacAddress,
+                 std::array<uint8_t, 6>(const std::string&));
+    MOCK_METHOD2(setMacAddress,
+                 bool(const std::string&, const std::array<uint8_t, 6>&));
+    MOCK_METHOD0(getOrCreateRandomMacAddress, std::array<uint8_t, 6>());
+    MOCK_METHOD2(registerIfaceEventHandlers,
+                 void(const std::string&, IfaceEventHandlers));
+    MOCK_METHOD1(unregisterIfaceEventHandlers, void(const std::string&));
+};
+}  // namespace iface_util
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // MOCK_WIFI_IFACE_UTIL_H_
diff --git a/wifi/1.4/default/tests/mock_wifi_legacy_hal.cpp b/wifi/1.4/default/tests/mock_wifi_legacy_hal.cpp
new file mode 100644
index 0000000..8d65c59
--- /dev/null
+++ b/wifi/1.4/default/tests/mock_wifi_legacy_hal.cpp
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android-base/macros.h>
+#include <gmock/gmock.h>
+
+#undef NAN  // This is weird, NAN is defined in bionic/libc/include/math.h:38
+#include "mock_wifi_legacy_hal.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+namespace legacy_hal {
+
+MockWifiLegacyHal::MockWifiLegacyHal(
+    const std::weak_ptr<wifi_system::InterfaceTool> iface_tool)
+    : WifiLegacyHal(iface_tool) {}
+}  // namespace legacy_hal
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.4/default/tests/mock_wifi_legacy_hal.h b/wifi/1.4/default/tests/mock_wifi_legacy_hal.h
new file mode 100644
index 0000000..6942c1e
--- /dev/null
+++ b/wifi/1.4/default/tests/mock_wifi_legacy_hal.h
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef MOCK_WIFI_LEGACY_HAL_H_
+#define MOCK_WIFI_LEGACY_HAL_H_
+
+#include <gmock/gmock.h>
+
+#include "wifi_legacy_hal.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+namespace legacy_hal {
+
+class MockWifiLegacyHal : public WifiLegacyHal {
+   public:
+    MockWifiLegacyHal(
+        const std::weak_ptr<wifi_system::InterfaceTool> iface_tool);
+    MOCK_METHOD0(initialize, wifi_error());
+    MOCK_METHOD0(start, wifi_error());
+    MOCK_METHOD2(stop, wifi_error(std::unique_lock<std::recursive_mutex>*,
+                                  const std::function<void()>&));
+    MOCK_METHOD2(setDfsFlag, wifi_error(const std::string&, bool));
+    MOCK_METHOD2(registerRadioModeChangeCallbackHandler,
+                 wifi_error(const std::string&,
+                            const on_radio_mode_change_callback&));
+    MOCK_METHOD1(getFirmwareVersion, std::pair<wifi_error, std::string>(
+                                         const std::string& iface_name));
+    MOCK_METHOD1(getDriverVersion, std::pair<wifi_error, std::string>(
+                                       const std::string& iface_name));
+
+    MOCK_METHOD2(selectTxPowerScenario,
+                 wifi_error(const std::string& iface_name,
+                            wifi_power_scenario scenario));
+    MOCK_METHOD1(resetTxPowerScenario,
+                 wifi_error(const std::string& iface_name));
+    MOCK_METHOD2(nanRegisterCallbackHandlers,
+                 wifi_error(const std::string&, const NanCallbackHandlers&));
+    MOCK_METHOD2(nanDisableRequest,
+                 wifi_error(const std::string&, transaction_id));
+    MOCK_METHOD3(nanDataInterfaceDelete,
+                 wifi_error(const std::string&, transaction_id,
+                            const std::string&));
+};
+}  // namespace legacy_hal
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // MOCK_WIFI_LEGACY_HAL_H_
diff --git a/wifi/1.4/default/tests/mock_wifi_mode_controller.cpp b/wifi/1.4/default/tests/mock_wifi_mode_controller.cpp
new file mode 100644
index 0000000..ee09029
--- /dev/null
+++ b/wifi/1.4/default/tests/mock_wifi_mode_controller.cpp
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android-base/macros.h>
+#include <gmock/gmock.h>
+
+#undef NAN  // This is weird, NAN is defined in bionic/libc/include/math.h:38
+#include "mock_wifi_mode_controller.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+namespace mode_controller {
+
+MockWifiModeController::MockWifiModeController() : WifiModeController() {}
+}  // namespace mode_controller
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.4/default/tests/mock_wifi_mode_controller.h b/wifi/1.4/default/tests/mock_wifi_mode_controller.h
new file mode 100644
index 0000000..1e1ce69
--- /dev/null
+++ b/wifi/1.4/default/tests/mock_wifi_mode_controller.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef MOCK_WIFI_MODE_CONTROLLER_H_
+#define MOCK_WIFI_MODE_CONTROLLER_H_
+
+#include <gmock/gmock.h>
+
+#include "wifi_mode_controller.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+namespace mode_controller {
+
+class MockWifiModeController : public WifiModeController {
+   public:
+    MockWifiModeController();
+    MOCK_METHOD0(initialize, bool());
+    MOCK_METHOD1(changeFirmwareMode, bool(IfaceType));
+    MOCK_METHOD1(isFirmwareModeChangeNeeded, bool(IfaceType));
+    MOCK_METHOD0(deinitialize, bool());
+};
+}  // namespace mode_controller
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // MOCK_WIFI_MODE_CONTROLLER_H_
diff --git a/wifi/1.4/default/tests/ringbuffer_unit_tests.cpp b/wifi/1.4/default/tests/ringbuffer_unit_tests.cpp
new file mode 100644
index 0000000..a65347f
--- /dev/null
+++ b/wifi/1.4/default/tests/ringbuffer_unit_tests.cpp
@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2018, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <gmock/gmock.h>
+
+#include "ringbuffer.h"
+
+using testing::Return;
+using testing::Test;
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+
+class RingbufferTest : public Test {
+   public:
+    const uint32_t maxBufferSize_ = 10;
+    Ringbuffer buffer_{maxBufferSize_};
+};
+
+TEST_F(RingbufferTest, CreateEmptyBuffer) {
+    ASSERT_TRUE(buffer_.getData().empty());
+}
+
+TEST_F(RingbufferTest, CanUseFullBufferCapacity) {
+    const std::vector<uint8_t> input(maxBufferSize_ / 2, '0');
+    const std::vector<uint8_t> input2(maxBufferSize_ / 2, '1');
+    buffer_.append(input);
+    buffer_.append(input2);
+    ASSERT_EQ(2u, buffer_.getData().size());
+    EXPECT_EQ(input, buffer_.getData().front());
+    EXPECT_EQ(input2, buffer_.getData().back());
+}
+
+TEST_F(RingbufferTest, OldDataIsRemovedOnOverflow) {
+    const std::vector<uint8_t> input(maxBufferSize_ / 2, '0');
+    const std::vector<uint8_t> input2(maxBufferSize_ / 2, '1');
+    const std::vector<uint8_t> input3 = {'G'};
+    buffer_.append(input);
+    buffer_.append(input2);
+    buffer_.append(input3);
+    ASSERT_EQ(2u, buffer_.getData().size());
+    EXPECT_EQ(input2, buffer_.getData().front());
+    EXPECT_EQ(input3, buffer_.getData().back());
+}
+
+TEST_F(RingbufferTest, MultipleOldDataIsRemovedOnOverflow) {
+    const std::vector<uint8_t> input(maxBufferSize_ / 2, '0');
+    const std::vector<uint8_t> input2(maxBufferSize_ / 2, '1');
+    const std::vector<uint8_t> input3(maxBufferSize_, '2');
+    buffer_.append(input);
+    buffer_.append(input2);
+    buffer_.append(input3);
+    ASSERT_EQ(1u, buffer_.getData().size());
+    EXPECT_EQ(input3, buffer_.getData().front());
+}
+
+TEST_F(RingbufferTest, AppendingEmptyBufferDoesNotAddGarbage) {
+    const std::vector<uint8_t> input = {};
+    buffer_.append(input);
+    ASSERT_TRUE(buffer_.getData().empty());
+}
+
+TEST_F(RingbufferTest, OversizedAppendIsDropped) {
+    const std::vector<uint8_t> input(maxBufferSize_ + 1, '0');
+    buffer_.append(input);
+    ASSERT_TRUE(buffer_.getData().empty());
+}
+
+TEST_F(RingbufferTest, OversizedAppendDoesNotDropExistingData) {
+    const std::vector<uint8_t> input(maxBufferSize_, '0');
+    const std::vector<uint8_t> input2(maxBufferSize_ + 1, '1');
+    buffer_.append(input);
+    buffer_.append(input2);
+    ASSERT_EQ(1u, buffer_.getData().size());
+    EXPECT_EQ(input, buffer_.getData().front());
+}
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.3/default/tests/runtests.sh b/wifi/1.4/default/tests/runtests.sh
similarity index 100%
rename from wifi/1.3/default/tests/runtests.sh
rename to wifi/1.4/default/tests/runtests.sh
diff --git a/wifi/1.4/default/tests/wifi_chip_unit_tests.cpp b/wifi/1.4/default/tests/wifi_chip_unit_tests.cpp
new file mode 100644
index 0000000..d35adbc
--- /dev/null
+++ b/wifi/1.4/default/tests/wifi_chip_unit_tests.cpp
@@ -0,0 +1,875 @@
+/*
+ * Copyright (C) 2017, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android-base/macros.h>
+#include <cutils/properties.h>
+#include <gmock/gmock.h>
+
+#undef NAN  // This is weird, NAN is defined in bionic/libc/include/math.h:38
+#include "wifi_chip.h"
+
+#include "mock_interface_tool.h"
+#include "mock_wifi_feature_flags.h"
+#include "mock_wifi_iface_util.h"
+#include "mock_wifi_legacy_hal.h"
+#include "mock_wifi_mode_controller.h"
+
+using testing::NiceMock;
+using testing::Return;
+using testing::Test;
+
+namespace {
+using android::hardware::wifi::V1_0::ChipId;
+
+constexpr ChipId kFakeChipId = 5;
+}  // namespace
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+
+class WifiChipTest : public Test {
+   protected:
+    void setupV1IfaceCombination() {
+        // clang-format off
+        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinationsSta = {
+            {{{{IfaceType::STA}, 1}, {{IfaceType::P2P}, 1}}}
+        };
+        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinationsAp = {
+            {{{{IfaceType::AP}, 1}}}
+        };
+        const std::vector<V1_0::IWifiChip::ChipMode> modes = {
+            {feature_flags::chip_mode_ids::kV1Sta, combinationsSta},
+            {feature_flags::chip_mode_ids::kV1Ap, combinationsAp}
+        };
+        // clang-format on
+        EXPECT_CALL(*feature_flags_, getChipModes())
+            .WillRepeatedly(testing::Return(modes));
+    }
+
+    void setupV1_AwareIfaceCombination() {
+        // clang-format off
+        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinationsSta = {
+            {{{{IfaceType::STA}, 1}, {{IfaceType::P2P, IfaceType::NAN}, 1}}}
+        };
+        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinationsAp = {
+            {{{{IfaceType::AP}, 1}}}
+        };
+        const std::vector<V1_0::IWifiChip::ChipMode> modes = {
+            {feature_flags::chip_mode_ids::kV1Sta, combinationsSta},
+            {feature_flags::chip_mode_ids::kV1Ap, combinationsAp}
+        };
+        // clang-format on
+        EXPECT_CALL(*feature_flags_, getChipModes())
+            .WillRepeatedly(testing::Return(modes));
+    }
+
+    void setupV1_AwareDisabledApIfaceCombination() {
+        // clang-format off
+        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinationsSta = {
+            {{{{IfaceType::STA}, 1}, {{IfaceType::P2P, IfaceType::NAN}, 1}}}
+        };
+        const std::vector<V1_0::IWifiChip::ChipMode> modes = {
+            {feature_flags::chip_mode_ids::kV1Sta, combinationsSta}
+        };
+        // clang-format on
+        EXPECT_CALL(*feature_flags_, getChipModes())
+            .WillRepeatedly(testing::Return(modes));
+    }
+
+    void setupV2_AwareIfaceCombination() {
+        // clang-format off
+        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinations = {
+            {{{{IfaceType::STA}, 1}, {{IfaceType::AP}, 1}}},
+            {{{{IfaceType::STA}, 1}, {{IfaceType::P2P, IfaceType::NAN}, 1}}}
+        };
+        const std::vector<V1_0::IWifiChip::ChipMode> modes = {
+            {feature_flags::chip_mode_ids::kV3, combinations}
+        };
+        // clang-format on
+        EXPECT_CALL(*feature_flags_, getChipModes())
+            .WillRepeatedly(testing::Return(modes));
+    }
+
+    void setupV2_AwareDisabledApIfaceCombination() {
+        // clang-format off
+        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinations = {
+            {{{{IfaceType::STA}, 1}, {{IfaceType::P2P, IfaceType::NAN}, 1}}}
+        };
+        const std::vector<V1_0::IWifiChip::ChipMode> modes = {
+            {feature_flags::chip_mode_ids::kV3, combinations}
+        };
+        // clang-format on
+        EXPECT_CALL(*feature_flags_, getChipModes())
+            .WillRepeatedly(testing::Return(modes));
+    }
+
+    void setup_MultiIfaceCombination() {
+        // clang-format off
+        const hidl_vec<V1_0::IWifiChip::ChipIfaceCombination> combinations = {
+            {{{{IfaceType::STA}, 3}, {{IfaceType::AP}, 1}}}
+        };
+        const std::vector<V1_0::IWifiChip::ChipMode> modes = {
+            {feature_flags::chip_mode_ids::kV3, combinations}
+        };
+        // clang-format on
+        EXPECT_CALL(*feature_flags_, getChipModes())
+            .WillRepeatedly(testing::Return(modes));
+    }
+
+    void assertNumberOfModes(uint32_t num_modes) {
+        chip_->getAvailableModes(
+            [num_modes](const WifiStatus& status,
+                        const std::vector<WifiChip::ChipMode>& modes) {
+                ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+                // V2_Aware has 1 mode of operation.
+                ASSERT_EQ(num_modes, modes.size());
+            });
+    }
+
+    void findModeAndConfigureForIfaceType(const IfaceType& type) {
+        // This should be aligned with kInvalidModeId in wifi_chip.cpp.
+        ChipModeId mode_id = UINT32_MAX;
+        chip_->getAvailableModes(
+            [&mode_id, &type](const WifiStatus& status,
+                              const std::vector<WifiChip::ChipMode>& modes) {
+                ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+                for (const auto& mode : modes) {
+                    for (const auto& combination : mode.availableCombinations) {
+                        for (const auto& limit : combination.limits) {
+                            if (limit.types.end() !=
+                                std::find(limit.types.begin(),
+                                          limit.types.end(), type)) {
+                                mode_id = mode.id;
+                            }
+                        }
+                    }
+                }
+            });
+        ASSERT_NE(UINT32_MAX, mode_id);
+
+        chip_->configureChip(mode_id, [](const WifiStatus& status) {
+            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+        });
+    }
+
+    // Returns an empty string on error.
+    std::string createIface(const IfaceType& type) {
+        std::string iface_name;
+        if (type == IfaceType::AP) {
+            chip_->createApIface([&iface_name](
+                                     const WifiStatus& status,
+                                     const sp<V1_0::IWifiApIface>& iface) {
+                if (WifiStatusCode::SUCCESS == status.code) {
+                    ASSERT_NE(iface.get(), nullptr);
+                    iface->getName([&iface_name](const WifiStatus& status,
+                                                 const hidl_string& name) {
+                        ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+                        iface_name = name.c_str();
+                    });
+                }
+            });
+        } else if (type == IfaceType::NAN) {
+            chip_->createNanIface(
+                [&iface_name](
+                    const WifiStatus& status,
+                    const sp<android::hardware::wifi::V1_0::IWifiNanIface>&
+                        iface) {
+                    if (WifiStatusCode::SUCCESS == status.code) {
+                        ASSERT_NE(iface.get(), nullptr);
+                        iface->getName([&iface_name](const WifiStatus& status,
+                                                     const hidl_string& name) {
+                            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+                            iface_name = name.c_str();
+                        });
+                    }
+                });
+        } else if (type == IfaceType::P2P) {
+            chip_->createP2pIface(
+                [&iface_name](const WifiStatus& status,
+                              const sp<IWifiP2pIface>& iface) {
+                    if (WifiStatusCode::SUCCESS == status.code) {
+                        ASSERT_NE(iface.get(), nullptr);
+                        iface->getName([&iface_name](const WifiStatus& status,
+                                                     const hidl_string& name) {
+                            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+                            iface_name = name.c_str();
+                        });
+                    }
+                });
+        } else if (type == IfaceType::STA) {
+            chip_->createStaIface(
+                [&iface_name](const WifiStatus& status,
+                              const sp<V1_0::IWifiStaIface>& iface) {
+                    if (WifiStatusCode::SUCCESS == status.code) {
+                        ASSERT_NE(iface.get(), nullptr);
+                        iface->getName([&iface_name](const WifiStatus& status,
+                                                     const hidl_string& name) {
+                            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+                            iface_name = name.c_str();
+                        });
+                    }
+                });
+        }
+        return iface_name;
+    }
+
+    void removeIface(const IfaceType& type, const std::string& iface_name) {
+        if (type == IfaceType::AP) {
+            chip_->removeApIface(iface_name, [](const WifiStatus& status) {
+                ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+            });
+        } else if (type == IfaceType::NAN) {
+            chip_->removeNanIface(iface_name, [](const WifiStatus& status) {
+                ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+            });
+        } else if (type == IfaceType::P2P) {
+            chip_->removeP2pIface(iface_name, [](const WifiStatus& status) {
+                ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+            });
+        } else if (type == IfaceType::STA) {
+            chip_->removeStaIface(iface_name, [](const WifiStatus& status) {
+                ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+            });
+        }
+    }
+
+    bool createRttController() {
+        bool success = false;
+        chip_->createRttController_1_4(
+            NULL, [&success](const WifiStatus& status,
+                             const sp<IWifiRttController>& rtt) {
+                if (WifiStatusCode::SUCCESS == status.code) {
+                    ASSERT_NE(rtt.get(), nullptr);
+                    success = true;
+                }
+            });
+        return success;
+    }
+
+    sp<WifiChip> chip_;
+    ChipId chip_id_ = kFakeChipId;
+    std::shared_ptr<NiceMock<wifi_system::MockInterfaceTool>> iface_tool_{
+        new NiceMock<wifi_system::MockInterfaceTool>};
+    std::shared_ptr<NiceMock<legacy_hal::MockWifiLegacyHal>> legacy_hal_{
+        new NiceMock<legacy_hal::MockWifiLegacyHal>(iface_tool_)};
+    std::shared_ptr<NiceMock<mode_controller::MockWifiModeController>>
+        mode_controller_{new NiceMock<mode_controller::MockWifiModeController>};
+    std::shared_ptr<NiceMock<iface_util::MockWifiIfaceUtil>> iface_util_{
+        new NiceMock<iface_util::MockWifiIfaceUtil>(iface_tool_)};
+    std::shared_ptr<NiceMock<feature_flags::MockWifiFeatureFlags>>
+        feature_flags_{new NiceMock<feature_flags::MockWifiFeatureFlags>};
+
+   public:
+    void SetUp() override {
+        chip_ = new WifiChip(chip_id_, legacy_hal_, mode_controller_,
+                             iface_util_, feature_flags_);
+
+        EXPECT_CALL(*mode_controller_, changeFirmwareMode(testing::_))
+            .WillRepeatedly(testing::Return(true));
+        EXPECT_CALL(*legacy_hal_, start())
+            .WillRepeatedly(testing::Return(legacy_hal::WIFI_SUCCESS));
+    }
+
+    void TearDown() override {
+        // Restore default system iface names (This should ideally be using a
+        // mock).
+        property_set("wifi.interface", "wlan0");
+        property_set("wifi.concurrent.interface", "wlan1");
+    }
+};
+
+////////// V1 Iface Combinations ////////////
+// Mode 1 - STA + P2P
+// Mode 2 - AP
+class WifiChipV1IfaceCombinationTest : public WifiChipTest {
+   public:
+    void SetUp() override {
+        setupV1IfaceCombination();
+        WifiChipTest::SetUp();
+        // V1 has 2 modes of operation.
+        assertNumberOfModes(2u);
+    }
+};
+
+TEST_F(WifiChipV1IfaceCombinationTest, StaMode_CreateSta_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
+}
+
+TEST_F(WifiChipV1IfaceCombinationTest, StaMode_CreateP2p_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
+}
+
+TEST_F(WifiChipV1IfaceCombinationTest, StaMode_CreateNan_ShouldFail) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
+}
+
+TEST_F(WifiChipV1IfaceCombinationTest, StaMode_CreateAp_ShouldFail) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_TRUE(createIface(IfaceType::AP).empty());
+}
+
+TEST_F(WifiChipV1IfaceCombinationTest, StaMode_CreateStaP2p_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
+}
+
+TEST_F(WifiChipV1IfaceCombinationTest, ApMode_CreateAp_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    ASSERT_EQ(createIface(IfaceType::AP), "wlan0");
+}
+
+TEST_F(WifiChipV1IfaceCombinationTest, ApMode_CreateSta_ShouldFail) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    ASSERT_TRUE(createIface(IfaceType::STA).empty());
+}
+
+TEST_F(WifiChipV1IfaceCombinationTest, ApMode_CreateP2p_ShouldFail) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    ASSERT_TRUE(createIface(IfaceType::STA).empty());
+}
+
+TEST_F(WifiChipV1IfaceCombinationTest, ApMode_CreateNan_ShouldFail) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
+}
+
+////////// V1 + Aware Iface Combinations ////////////
+// Mode 1 - STA + P2P/NAN
+// Mode 2 - AP
+class WifiChipV1_AwareIfaceCombinationTest : public WifiChipTest {
+   public:
+    void SetUp() override {
+        setupV1_AwareIfaceCombination();
+        WifiChipTest::SetUp();
+        // V1_Aware has 2 modes of operation.
+        assertNumberOfModes(2u);
+    }
+};
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, StaMode_CreateSta_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, StaMode_CreateP2p_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, StaMode_CreateNan_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::NAN).empty());
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, StaMode_CreateAp_ShouldFail) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_TRUE(createIface(IfaceType::AP).empty());
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest,
+       StaMode_CreateStaP2p_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest,
+       StaMode_CreateStaNan_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_FALSE(createIface(IfaceType::NAN).empty());
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest,
+       StaMode_CreateStaP2PNan_ShouldFail) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
+    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest,
+       StaMode_CreateStaNan_AfterP2pRemove_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    const auto p2p_iface_name = createIface(IfaceType::P2P);
+    ASSERT_FALSE(p2p_iface_name.empty());
+    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
+
+    // After removing P2P iface, NAN iface creation should succeed.
+    removeIface(IfaceType::P2P, p2p_iface_name);
+    ASSERT_FALSE(createIface(IfaceType::NAN).empty());
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest,
+       StaMode_CreateStaP2p_AfterNanRemove_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    const auto nan_iface_name = createIface(IfaceType::NAN);
+    ASSERT_FALSE(nan_iface_name.empty());
+    ASSERT_TRUE(createIface(IfaceType::P2P).empty());
+
+    // After removing NAN iface, P2P iface creation should succeed.
+    removeIface(IfaceType::NAN, nan_iface_name);
+    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, ApMode_CreateAp_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    ASSERT_EQ(createIface(IfaceType::AP), "wlan0");
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, ApMode_CreateSta_ShouldFail) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    ASSERT_TRUE(createIface(IfaceType::STA).empty());
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, ApMode_CreateP2p_ShouldFail) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    ASSERT_TRUE(createIface(IfaceType::STA).empty());
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, ApMode_CreateNan_ShouldFail) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, RttControllerFlowStaModeNoSta) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_TRUE(createRttController());
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, RttControllerFlowStaModeWithSta) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_TRUE(createRttController());
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, RttControllerFlowApToSta) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    const auto ap_iface_name = createIface(IfaceType::AP);
+    ASSERT_FALSE(ap_iface_name.empty());
+    ASSERT_FALSE(createRttController());
+
+    removeIface(IfaceType::AP, ap_iface_name);
+
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_TRUE(createRttController());
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, SelectTxScenarioWithOnlySta) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
+    EXPECT_CALL(*legacy_hal_, selectTxPowerScenario("wlan0", testing::_))
+        .WillOnce(testing::Return(legacy_hal::WIFI_SUCCESS));
+    chip_->selectTxPowerScenario_1_2(
+        V1_2::IWifiChip::TxPowerScenario::ON_HEAD_CELL_OFF,
+        [](const WifiStatus& status) {
+            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+        });
+}
+
+TEST_F(WifiChipV1_AwareIfaceCombinationTest, SelectTxScenarioWithOnlyAp) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    ASSERT_EQ(createIface(IfaceType::AP), "wlan0");
+    EXPECT_CALL(*legacy_hal_, selectTxPowerScenario("wlan0", testing::_))
+        .WillOnce(testing::Return(legacy_hal::WIFI_SUCCESS));
+    chip_->selectTxPowerScenario_1_2(
+        V1_2::IWifiChip::TxPowerScenario::ON_HEAD_CELL_OFF,
+        [](const WifiStatus& status) {
+            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+        });
+}
+
+////////// V2 + Aware Iface Combinations ////////////
+// Mode 1 - STA + STA/AP
+//        - STA + P2P/NAN
+class WifiChipV2_AwareIfaceCombinationTest : public WifiChipTest {
+   public:
+    void SetUp() override {
+        setupV2_AwareIfaceCombination();
+        WifiChipTest::SetUp();
+        // V2_Aware has 1 mode of operation.
+        assertNumberOfModes(1u);
+    }
+};
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateSta_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateP2p_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateNan_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::NAN).empty());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateAp_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_EQ(createIface(IfaceType::AP), "wlan1");
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateStaSta_ShouldFail) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
+    ASSERT_TRUE(createIface(IfaceType::STA).empty());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateStaAp_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
+    ASSERT_EQ(createIface(IfaceType::AP), "wlan1");
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateApSta_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    ASSERT_EQ(createIface(IfaceType::AP), "wlan1");
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest,
+       CreateSta_AfterStaApRemove_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    const auto sta_iface_name = createIface(IfaceType::STA);
+    ASSERT_FALSE(sta_iface_name.empty());
+    const auto ap_iface_name = createIface(IfaceType::AP);
+    ASSERT_FALSE(ap_iface_name.empty());
+
+    ASSERT_TRUE(createIface(IfaceType::STA).empty());
+
+    // After removing AP & STA iface, STA iface creation should succeed.
+    removeIface(IfaceType::STA, sta_iface_name);
+    removeIface(IfaceType::AP, ap_iface_name);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateStaP2p_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateStaNan_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_FALSE(createIface(IfaceType::NAN).empty());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateStaP2PNan_ShouldFail) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
+    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest,
+       CreateStaNan_AfterP2pRemove_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    const auto p2p_iface_name = createIface(IfaceType::P2P);
+    ASSERT_FALSE(p2p_iface_name.empty());
+    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
+
+    // After removing P2P iface, NAN iface creation should succeed.
+    removeIface(IfaceType::P2P, p2p_iface_name);
+    ASSERT_FALSE(createIface(IfaceType::NAN).empty());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest,
+       CreateStaP2p_AfterNanRemove_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    const auto nan_iface_name = createIface(IfaceType::NAN);
+    ASSERT_FALSE(nan_iface_name.empty());
+    ASSERT_TRUE(createIface(IfaceType::P2P).empty());
+
+    // After removing NAN iface, P2P iface creation should succeed.
+    removeIface(IfaceType::NAN, nan_iface_name);
+    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateApNan_ShouldFail) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    ASSERT_FALSE(createIface(IfaceType::AP).empty());
+    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, CreateApP2p_ShouldFail) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    ASSERT_FALSE(createIface(IfaceType::AP).empty());
+    ASSERT_TRUE(createIface(IfaceType::P2P).empty());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest,
+       StaMode_CreateStaNan_AfterP2pRemove_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    const auto p2p_iface_name = createIface(IfaceType::P2P);
+    ASSERT_FALSE(p2p_iface_name.empty());
+    ASSERT_TRUE(createIface(IfaceType::NAN).empty());
+
+    // After removing P2P iface, NAN iface creation should succeed.
+    removeIface(IfaceType::P2P, p2p_iface_name);
+    ASSERT_FALSE(createIface(IfaceType::NAN).empty());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest,
+       StaMode_CreateStaP2p_AfterNanRemove_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    const auto nan_iface_name = createIface(IfaceType::NAN);
+    ASSERT_FALSE(nan_iface_name.empty());
+    ASSERT_TRUE(createIface(IfaceType::P2P).empty());
+
+    // After removing NAN iface, P2P iface creation should succeed.
+    removeIface(IfaceType::NAN, nan_iface_name);
+    ASSERT_FALSE(createIface(IfaceType::P2P).empty());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest,
+       CreateStaAp_EnsureDifferentIfaceNames) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    const auto sta_iface_name = createIface(IfaceType::STA);
+    const auto ap_iface_name = createIface(IfaceType::AP);
+    ASSERT_FALSE(sta_iface_name.empty());
+    ASSERT_FALSE(ap_iface_name.empty());
+    ASSERT_NE(sta_iface_name, ap_iface_name);
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, RttControllerFlowStaModeNoSta) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_TRUE(createRttController());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, RttControllerFlowStaModeWithSta) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_TRUE(createRttController());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, RttControllerFlow) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_FALSE(createIface(IfaceType::AP).empty());
+    ASSERT_TRUE(createRttController());
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, SelectTxScenarioWithOnlySta) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
+    EXPECT_CALL(*legacy_hal_, selectTxPowerScenario("wlan0", testing::_))
+        .WillOnce(testing::Return(legacy_hal::WIFI_SUCCESS));
+    chip_->selectTxPowerScenario_1_2(
+        V1_2::IWifiChip::TxPowerScenario::ON_HEAD_CELL_OFF,
+        [](const WifiStatus& status) {
+            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+        });
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest, SelectTxScenarioWithOnlyAp) {
+    findModeAndConfigureForIfaceType(IfaceType::AP);
+    ASSERT_EQ(createIface(IfaceType::AP), "wlan1");
+    EXPECT_CALL(*legacy_hal_, selectTxPowerScenario("wlan1", testing::_))
+        .WillOnce(testing::Return(legacy_hal::WIFI_SUCCESS));
+    chip_->selectTxPowerScenario_1_2(
+        V1_2::IWifiChip::TxPowerScenario::ON_HEAD_CELL_OFF,
+        [](const WifiStatus& status) {
+            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+        });
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest,
+       InvalidateAndRemoveNanOnStaRemove) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
+
+    // Create NAN iface
+    ASSERT_EQ(createIface(IfaceType::NAN), "wlan0");
+
+    // We should have 1 nan iface.
+    chip_->getNanIfaceNames(
+        [](const WifiStatus& status, const hidl_vec<hidl_string>& iface_names) {
+            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+            ASSERT_EQ(iface_names.size(), 1u);
+            ASSERT_EQ(iface_names[0], "wlan0");
+        });
+    // Retrieve the exact iface object.
+    sp<android::hardware::wifi::V1_0::IWifiNanIface> nan_iface;
+    chip_->getNanIface(
+        "wlan0",
+        [&nan_iface](
+            const WifiStatus& status,
+            const sp<android::hardware::wifi::V1_0::IWifiNanIface>& iface) {
+            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+            ASSERT_NE(iface.get(), nullptr);
+            nan_iface = iface;
+        });
+
+    // Remove the STA iface.
+    removeIface(IfaceType::STA, "wlan0");
+    // We should have 0 nan iface now.
+    chip_->getNanIfaceNames(
+        [](const WifiStatus& status, const hidl_vec<hidl_string>& iface_names) {
+            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+            ASSERT_EQ(iface_names.size(), 0u);
+        });
+    // Any operation on the nan iface object should return error now.
+    nan_iface->getName(
+        [](const WifiStatus& status, const std::string& /* iface_name */) {
+            ASSERT_EQ(WifiStatusCode::ERROR_WIFI_IFACE_INVALID, status.code);
+        });
+}
+
+TEST_F(WifiChipV2_AwareIfaceCombinationTest,
+       InvalidateAndRemoveRttControllerOnStaRemove) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
+
+    // Create RTT controller
+    sp<IWifiRttController> rtt_controller;
+    chip_->createRttController_1_4(
+        NULL, [&rtt_controller](const WifiStatus& status,
+                                const sp<IWifiRttController>& rtt) {
+            if (WifiStatusCode::SUCCESS == status.code) {
+                ASSERT_NE(rtt.get(), nullptr);
+                rtt_controller = rtt;
+            }
+        });
+
+    // Remove the STA iface.
+    removeIface(IfaceType::STA, "wlan0");
+
+    // Any operation on the rtt controller object should return error now.
+    rtt_controller->getBoundIface(
+        [](const WifiStatus& status, const sp<IWifiIface>& /* iface */) {
+            ASSERT_EQ(WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+                      status.code);
+        });
+}
+
+////////// V1 Iface Combinations when AP creation is disabled //////////
+class WifiChipV1_AwareDisabledApIfaceCombinationTest : public WifiChipTest {
+   public:
+    void SetUp() override {
+        setupV1_AwareDisabledApIfaceCombination();
+        WifiChipTest::SetUp();
+    }
+};
+
+TEST_F(WifiChipV1_AwareDisabledApIfaceCombinationTest,
+       StaMode_CreateSta_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_TRUE(createIface(IfaceType::AP).empty());
+}
+
+////////// V2 Iface Combinations when AP creation is disabled //////////
+class WifiChipV2_AwareDisabledApIfaceCombinationTest : public WifiChipTest {
+   public:
+    void SetUp() override {
+        setupV2_AwareDisabledApIfaceCombination();
+        WifiChipTest::SetUp();
+    }
+};
+
+TEST_F(WifiChipV2_AwareDisabledApIfaceCombinationTest,
+       CreateSta_ShouldSucceed) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_TRUE(createIface(IfaceType::AP).empty());
+}
+
+////////// Hypothetical Iface Combination with multiple ifaces //////////
+class WifiChip_MultiIfaceTest : public WifiChipTest {
+   public:
+    void SetUp() override {
+        setup_MultiIfaceCombination();
+        WifiChipTest::SetUp();
+    }
+};
+
+TEST_F(WifiChip_MultiIfaceTest, Create3Sta) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_FALSE(createIface(IfaceType::STA).empty());
+    ASSERT_TRUE(createIface(IfaceType::STA).empty());
+}
+
+TEST_F(WifiChip_MultiIfaceTest, CreateStaWithDefaultNames) {
+    property_set("wifi.interface.0", "");
+    property_set("wifi.interface.1", "");
+    property_set("wifi.interface.2", "");
+    property_set("wifi.interface", "");
+    property_set("wifi.concurrent.interface", "");
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan1");
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan2");
+}
+
+TEST_F(WifiChip_MultiIfaceTest, CreateStaWithCustomNames) {
+    property_set("wifi.interface.0", "test0");
+    property_set("wifi.interface.1", "test1");
+    property_set("wifi.interface.2", "test2");
+    property_set("wifi.interface", "bad0");
+    property_set("wifi.concurrent.interface", "bad1");
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_EQ(createIface(IfaceType::STA), "bad0");
+    ASSERT_EQ(createIface(IfaceType::STA), "bad1");
+    ASSERT_EQ(createIface(IfaceType::STA), "test2");
+}
+
+TEST_F(WifiChip_MultiIfaceTest, CreateStaWithCustomAltNames) {
+    property_set("wifi.interface.0", "");
+    property_set("wifi.interface.1", "");
+    property_set("wifi.interface.2", "");
+    property_set("wifi.interface", "testA0");
+    property_set("wifi.concurrent.interface", "testA1");
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    ASSERT_EQ(createIface(IfaceType::STA), "testA0");
+    ASSERT_EQ(createIface(IfaceType::STA), "testA1");
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan2");
+}
+
+TEST_F(WifiChip_MultiIfaceTest, CreateApStartsWithIdx1) {
+    findModeAndConfigureForIfaceType(IfaceType::STA);
+    // First AP will be slotted to wlan1.
+    ASSERT_EQ(createIface(IfaceType::AP), "wlan1");
+    // First STA will be slotted to wlan0.
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan0");
+    // All further STA will be slotted to the remaining free indices.
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan2");
+    ASSERT_EQ(createIface(IfaceType::STA), "wlan3");
+}
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.4/default/tests/wifi_iface_util_unit_tests.cpp b/wifi/1.4/default/tests/wifi_iface_util_unit_tests.cpp
new file mode 100644
index 0000000..03394bc
--- /dev/null
+++ b/wifi/1.4/default/tests/wifi_iface_util_unit_tests.cpp
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2019, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android-base/macros.h>
+#include <gmock/gmock.h>
+
+#undef NAN
+#include "wifi_iface_util.h"
+
+#include "mock_interface_tool.h"
+
+using testing::NiceMock;
+using testing::Test;
+
+namespace {
+constexpr uint8_t kValidUnicastLocallyAssignedMacAddressMask = 0x02;
+constexpr uint8_t kMacAddress[] = {0x02, 0x12, 0x45, 0x56, 0xab, 0xcc};
+constexpr char kIfaceName[] = "test-wlan0";
+
+bool isValidUnicastLocallyAssignedMacAddress(
+    const std::array<uint8_t, 6>& mac_address) {
+    uint8_t first_byte = mac_address[0];
+    return (first_byte & 0x3) == kValidUnicastLocallyAssignedMacAddressMask;
+}
+}  // namespace
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+namespace iface_util {
+class WifiIfaceUtilTest : public Test {
+   protected:
+    std::shared_ptr<NiceMock<wifi_system::MockInterfaceTool>> iface_tool_{
+        new NiceMock<wifi_system::MockInterfaceTool>};
+    WifiIfaceUtil* iface_util_ = new WifiIfaceUtil(iface_tool_);
+};
+
+TEST_F(WifiIfaceUtilTest, GetOrCreateRandomMacAddress) {
+    auto mac_address = iface_util_->getOrCreateRandomMacAddress();
+    ASSERT_TRUE(isValidUnicastLocallyAssignedMacAddress(mac_address));
+
+    // All further calls should return the same MAC address.
+    ASSERT_EQ(mac_address, iface_util_->getOrCreateRandomMacAddress());
+    ASSERT_EQ(mac_address, iface_util_->getOrCreateRandomMacAddress());
+}
+
+TEST_F(WifiIfaceUtilTest, IfaceEventHandlers_SetMacAddress) {
+    std::array<uint8_t, 6> mac_address = {};
+    std::copy(std::begin(kMacAddress), std::end(kMacAddress),
+              std::begin(mac_address));
+    EXPECT_CALL(*iface_tool_, SetMacAddress(testing::_, testing::_))
+        .WillRepeatedly(testing::Return(true));
+    EXPECT_CALL(*iface_tool_, SetUpState(testing::_, testing::_))
+        .WillRepeatedly(testing::Return(true));
+
+    // Register for iface state toggle events.
+    bool callback_invoked = false;
+    iface_util::IfaceEventHandlers event_handlers = {};
+    event_handlers.on_state_toggle_off_on =
+        [&callback_invoked](const std::string& /* iface_name */) {
+            callback_invoked = true;
+        };
+    iface_util_->registerIfaceEventHandlers(kIfaceName, event_handlers);
+    // Invoke setMacAddress and ensure that the cb is invoked.
+    ASSERT_TRUE(iface_util_->setMacAddress(kIfaceName, mac_address));
+    ASSERT_TRUE(callback_invoked);
+
+    // Unregister for iface state toggle events.
+    callback_invoked = false;
+    iface_util_->unregisterIfaceEventHandlers(kIfaceName);
+    // Invoke setMacAddress and ensure that the cb is not invoked.
+    ASSERT_TRUE(iface_util_->setMacAddress(kIfaceName, mac_address));
+    ASSERT_FALSE(callback_invoked);
+}
+}  // namespace iface_util
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.4/default/tests/wifi_nan_iface_unit_tests.cpp b/wifi/1.4/default/tests/wifi_nan_iface_unit_tests.cpp
new file mode 100644
index 0000000..9022792
--- /dev/null
+++ b/wifi/1.4/default/tests/wifi_nan_iface_unit_tests.cpp
@@ -0,0 +1,157 @@
+/*
+ * Copyright (C) 2019, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android-base/macros.h>
+#include <cutils/properties.h>
+#include <gmock/gmock.h>
+
+#undef NAN  // This is weird, NAN is defined in bionic/libc/include/math.h:38
+#include "wifi_nan_iface.h"
+
+#include "mock_interface_tool.h"
+#include "mock_wifi_feature_flags.h"
+#include "mock_wifi_iface_util.h"
+#include "mock_wifi_legacy_hal.h"
+
+using testing::NiceMock;
+using testing::Return;
+using testing::Test;
+
+namespace {
+constexpr char kIfaceName[] = "mockWlan0";
+}  // namespace
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+
+using android::hardware::wifi::V1_2::IWifiNanIfaceEventCallback;
+using android::hardware::wifi::V1_2::NanDataPathConfirmInd;
+
+bool CaptureIfaceEventHandlers(
+    const std::string& /* iface_name*/,
+    iface_util::IfaceEventHandlers in_iface_event_handlers,
+    iface_util::IfaceEventHandlers* out_iface_event_handlers) {
+    *out_iface_event_handlers = in_iface_event_handlers;
+    return true;
+}
+
+class MockNanIfaceEventCallback : public IWifiNanIfaceEventCallback {
+   public:
+    MockNanIfaceEventCallback() = default;
+
+    MOCK_METHOD3(notifyCapabilitiesResponse,
+                 Return<void>(uint16_t, const WifiNanStatus&,
+                              const NanCapabilities&));
+    MOCK_METHOD2(notifyEnableResponse,
+                 Return<void>(uint16_t, const WifiNanStatus&));
+    MOCK_METHOD2(notifyConfigResponse,
+                 Return<void>(uint16_t, const WifiNanStatus&));
+    MOCK_METHOD2(notifyDisableResponse,
+                 Return<void>(uint16_t, const WifiNanStatus&));
+    MOCK_METHOD3(notifyStartPublishResponse,
+                 Return<void>(uint16_t, const WifiNanStatus&, uint8_t));
+    MOCK_METHOD2(notifyStopPublishResponse,
+                 Return<void>(uint16_t, const WifiNanStatus&));
+    MOCK_METHOD3(notifyStartSubscribeResponse,
+                 Return<void>(uint16_t, const WifiNanStatus&, uint8_t));
+    MOCK_METHOD2(notifyStopSubscribeResponse,
+                 Return<void>(uint16_t, const WifiNanStatus&));
+    MOCK_METHOD2(notifyTransmitFollowupResponse,
+                 Return<void>(uint16_t, const WifiNanStatus&));
+    MOCK_METHOD2(notifyCreateDataInterfaceResponse,
+                 Return<void>(uint16_t, const WifiNanStatus&));
+    MOCK_METHOD2(notifyDeleteDataInterfaceResponse,
+                 Return<void>(uint16_t, const WifiNanStatus&));
+    MOCK_METHOD3(notifyInitiateDataPathResponse,
+                 Return<void>(uint16_t, const WifiNanStatus&, uint32_t));
+    MOCK_METHOD2(notifyRespondToDataPathIndicationResponse,
+                 Return<void>(uint16_t, const WifiNanStatus&));
+    MOCK_METHOD2(notifyTerminateDataPathResponse,
+                 Return<void>(uint16_t, const WifiNanStatus&));
+    MOCK_METHOD1(eventClusterEvent, Return<void>(const NanClusterEventInd&));
+    MOCK_METHOD1(eventDisabled, Return<void>(const WifiNanStatus&));
+    MOCK_METHOD2(eventPublishTerminated,
+                 Return<void>(uint8_t, const WifiNanStatus&));
+    MOCK_METHOD2(eventSubscribeTerminated,
+                 Return<void>(uint8_t, const WifiNanStatus&));
+    MOCK_METHOD1(eventMatch, Return<void>(const NanMatchInd&));
+    MOCK_METHOD2(eventMatchExpired, Return<void>(uint8_t, uint32_t));
+    MOCK_METHOD1(eventFollowupReceived,
+                 Return<void>(const NanFollowupReceivedInd&));
+    MOCK_METHOD2(eventTransmitFollowup,
+                 Return<void>(uint16_t, const WifiNanStatus&));
+    MOCK_METHOD1(eventDataPathRequest,
+                 Return<void>(const NanDataPathRequestInd&));
+    MOCK_METHOD1(
+        eventDataPathConfirm,
+        Return<void>(
+            const android::hardware::wifi::V1_0::NanDataPathConfirmInd&));
+    MOCK_METHOD1(eventDataPathTerminated, Return<void>(uint32_t));
+    MOCK_METHOD1(eventDataPathConfirm_1_2,
+                 Return<void>(const NanDataPathConfirmInd&));
+    MOCK_METHOD1(eventDataPathScheduleUpdate,
+                 Return<void>(const NanDataPathScheduleUpdateInd&));
+};
+
+class WifiNanIfaceTest : public Test {
+   protected:
+    std::shared_ptr<NiceMock<wifi_system::MockInterfaceTool>> iface_tool_{
+        new NiceMock<wifi_system::MockInterfaceTool>};
+    std::shared_ptr<NiceMock<legacy_hal::MockWifiLegacyHal>> legacy_hal_{
+        new NiceMock<legacy_hal::MockWifiLegacyHal>(iface_tool_)};
+    std::shared_ptr<NiceMock<iface_util::MockWifiIfaceUtil>> iface_util_{
+        new NiceMock<iface_util::MockWifiIfaceUtil>(iface_tool_)};
+};
+
+TEST_F(WifiNanIfaceTest, IfacEventHandlers_OnStateToggleOffOn) {
+    iface_util::IfaceEventHandlers captured_iface_event_handlers = {};
+    EXPECT_CALL(*legacy_hal_,
+                nanRegisterCallbackHandlers(testing::_, testing::_))
+        .WillOnce(testing::Return(legacy_hal::WIFI_SUCCESS));
+    EXPECT_CALL(*iface_util_,
+                registerIfaceEventHandlers(testing::_, testing::_))
+        .WillOnce(testing::Invoke(
+            bind(CaptureIfaceEventHandlers, std::placeholders::_1,
+                 std::placeholders::_2, &captured_iface_event_handlers)));
+    sp<WifiNanIface> nan_iface =
+        new WifiNanIface(kIfaceName, legacy_hal_, iface_util_);
+
+    // Register a mock nan event callback.
+    sp<NiceMock<MockNanIfaceEventCallback>> mock_event_callback{
+        new NiceMock<MockNanIfaceEventCallback>};
+    nan_iface->registerEventCallback(
+        mock_event_callback, [](const WifiStatus& status) {
+            ASSERT_EQ(WifiStatusCode::SUCCESS, status.code);
+        });
+    // Ensure that the eventDisabled() function in mock callback will be
+    // invoked.
+    WifiNanStatus expected_nan_status = {
+        NanStatusType::UNSUPPORTED_CONCURRENCY_NAN_DISABLED, ""};
+    EXPECT_CALL(*mock_event_callback, eventDisabled(expected_nan_status))
+        .Times(1);
+
+    // Trigger the iface state toggle callback.
+    captured_iface_event_handlers.on_state_toggle_off_on(kIfaceName);
+}
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.4/default/wifi.cpp b/wifi/1.4/default/wifi.cpp
new file mode 100644
index 0000000..9c6b0f0
--- /dev/null
+++ b/wifi/1.4/default/wifi.cpp
@@ -0,0 +1,220 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+
+#include "hidl_return_util.h"
+#include "wifi.h"
+#include "wifi_status_util.h"
+
+namespace {
+// Chip ID to use for the only supported chip.
+static constexpr android::hardware::wifi::V1_0::ChipId kChipId = 0;
+}  // namespace
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+using hidl_return_util::validateAndCall;
+using hidl_return_util::validateAndCallWithLock;
+
+Wifi::Wifi(
+    const std::shared_ptr<wifi_system::InterfaceTool> iface_tool,
+    const std::shared_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
+    const std::shared_ptr<mode_controller::WifiModeController> mode_controller,
+    const std::shared_ptr<iface_util::WifiIfaceUtil> iface_util,
+    const std::shared_ptr<feature_flags::WifiFeatureFlags> feature_flags)
+    : iface_tool_(iface_tool),
+      legacy_hal_(legacy_hal),
+      mode_controller_(mode_controller),
+      iface_util_(iface_util),
+      feature_flags_(feature_flags),
+      run_state_(RunState::STOPPED) {}
+
+bool Wifi::isValid() {
+    // This object is always valid.
+    return true;
+}
+
+Return<void> Wifi::registerEventCallback(
+    const sp<IWifiEventCallback>& event_callback,
+    registerEventCallback_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_UNKNOWN,
+                           &Wifi::registerEventCallbackInternal, hidl_status_cb,
+                           event_callback);
+}
+
+Return<bool> Wifi::isStarted() { return run_state_ != RunState::STOPPED; }
+
+Return<void> Wifi::start(start_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_UNKNOWN,
+                           &Wifi::startInternal, hidl_status_cb);
+}
+
+Return<void> Wifi::stop(stop_cb hidl_status_cb) {
+    return validateAndCallWithLock(this, WifiStatusCode::ERROR_UNKNOWN,
+                                   &Wifi::stopInternal, hidl_status_cb);
+}
+
+Return<void> Wifi::getChipIds(getChipIds_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_UNKNOWN,
+                           &Wifi::getChipIdsInternal, hidl_status_cb);
+}
+
+Return<void> Wifi::getChip(ChipId chip_id, getChip_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_UNKNOWN,
+                           &Wifi::getChipInternal, hidl_status_cb, chip_id);
+}
+
+Return<void> Wifi::debug(const hidl_handle& handle,
+                         const hidl_vec<hidl_string>&) {
+    LOG(INFO) << "-----------Debug is called----------------";
+    if (!chip_.get()) {
+        return Void();
+    }
+    return chip_->debug(handle, {});
+}
+
+WifiStatus Wifi::registerEventCallbackInternal(
+    const sp<IWifiEventCallback>& event_callback) {
+    if (!event_cb_handler_.addCallback(event_callback)) {
+        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+    }
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+WifiStatus Wifi::startInternal() {
+    if (run_state_ == RunState::STARTED) {
+        return createWifiStatus(WifiStatusCode::SUCCESS);
+    } else if (run_state_ == RunState::STOPPING) {
+        return createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE,
+                                "HAL is stopping");
+    }
+    WifiStatus wifi_status = initializeModeControllerAndLegacyHal();
+    if (wifi_status.code == WifiStatusCode::SUCCESS) {
+        // Create the chip instance once the HAL is started.
+        chip_ = new WifiChip(kChipId, legacy_hal_, mode_controller_,
+                             iface_util_, feature_flags_);
+        run_state_ = RunState::STARTED;
+        for (const auto& callback : event_cb_handler_.getCallbacks()) {
+            if (!callback->onStart().isOk()) {
+                LOG(ERROR) << "Failed to invoke onStart callback";
+            };
+        }
+        LOG(INFO) << "Wifi HAL started";
+    } else {
+        for (const auto& callback : event_cb_handler_.getCallbacks()) {
+            if (!callback->onFailure(wifi_status).isOk()) {
+                LOG(ERROR) << "Failed to invoke onFailure callback";
+            }
+        }
+        LOG(ERROR) << "Wifi HAL start failed";
+        // Clear the event callback objects since the HAL start failed.
+        event_cb_handler_.invalidate();
+    }
+    return wifi_status;
+}
+
+WifiStatus Wifi::stopInternal(
+    /* NONNULL */ std::unique_lock<std::recursive_mutex>* lock) {
+    if (run_state_ == RunState::STOPPED) {
+        return createWifiStatus(WifiStatusCode::SUCCESS);
+    } else if (run_state_ == RunState::STOPPING) {
+        return createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE,
+                                "HAL is stopping");
+    }
+    // Clear the chip object and its child objects since the HAL is now
+    // stopped.
+    if (chip_.get()) {
+        chip_->invalidate();
+        chip_.clear();
+    }
+    WifiStatus wifi_status = stopLegacyHalAndDeinitializeModeController(lock);
+    if (wifi_status.code == WifiStatusCode::SUCCESS) {
+        for (const auto& callback : event_cb_handler_.getCallbacks()) {
+            if (!callback->onStop().isOk()) {
+                LOG(ERROR) << "Failed to invoke onStop callback";
+            };
+        }
+        LOG(INFO) << "Wifi HAL stopped";
+    } else {
+        for (const auto& callback : event_cb_handler_.getCallbacks()) {
+            if (!callback->onFailure(wifi_status).isOk()) {
+                LOG(ERROR) << "Failed to invoke onFailure callback";
+            }
+        }
+        LOG(ERROR) << "Wifi HAL stop failed";
+    }
+    // Clear the event callback objects since the HAL is now stopped.
+    event_cb_handler_.invalidate();
+    return wifi_status;
+}
+
+std::pair<WifiStatus, std::vector<ChipId>> Wifi::getChipIdsInternal() {
+    std::vector<ChipId> chip_ids;
+    if (chip_.get()) {
+        chip_ids.emplace_back(kChipId);
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), std::move(chip_ids)};
+}
+
+std::pair<WifiStatus, sp<IWifiChip>> Wifi::getChipInternal(ChipId chip_id) {
+    if (!chip_.get()) {
+        return {createWifiStatus(WifiStatusCode::ERROR_NOT_STARTED), nullptr};
+    }
+    if (chip_id != kChipId) {
+        return {createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS), nullptr};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), chip_};
+}
+
+WifiStatus Wifi::initializeModeControllerAndLegacyHal() {
+    if (!mode_controller_->initialize()) {
+        LOG(ERROR) << "Failed to initialize firmware mode controller";
+        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+    }
+    legacy_hal::wifi_error legacy_status = legacy_hal_->initialize();
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        LOG(ERROR) << "Failed to initialize legacy HAL: "
+                   << legacyErrorToString(legacy_status);
+        return createWifiStatusFromLegacyError(legacy_status);
+    }
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+WifiStatus Wifi::stopLegacyHalAndDeinitializeModeController(
+    /* NONNULL */ std::unique_lock<std::recursive_mutex>* lock) {
+    run_state_ = RunState::STOPPING;
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_->stop(lock, [&]() { run_state_ = RunState::STOPPED; });
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        LOG(ERROR) << "Failed to stop legacy HAL: "
+                   << legacyErrorToString(legacy_status);
+        return createWifiStatusFromLegacyError(legacy_status);
+    }
+    if (!mode_controller_->deinitialize()) {
+        LOG(ERROR) << "Failed to deinitialize firmware mode controller";
+        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+    }
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.4/default/wifi.h b/wifi/1.4/default/wifi.h
new file mode 100644
index 0000000..087d6f7
--- /dev/null
+++ b/wifi/1.4/default/wifi.h
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef WIFI_H_
+#define WIFI_H_
+
+#include <functional>
+
+#include <android-base/macros.h>
+#include <android/hardware/wifi/1.4/IWifi.h>
+#include <utils/Looper.h>
+
+#include "hidl_callback_util.h"
+#include "wifi_chip.h"
+#include "wifi_feature_flags.h"
+#include "wifi_legacy_hal.h"
+#include "wifi_mode_controller.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+
+/**
+ * Root HIDL interface object used to control the Wifi HAL.
+ */
+class Wifi : public V1_4::IWifi {
+   public:
+    Wifi(const std::shared_ptr<wifi_system::InterfaceTool> iface_tool,
+         const std::shared_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
+         const std::shared_ptr<mode_controller::WifiModeController>
+             mode_controller,
+         const std::shared_ptr<iface_util::WifiIfaceUtil> iface_util,
+         const std::shared_ptr<feature_flags::WifiFeatureFlags> feature_flags);
+
+    bool isValid();
+
+    // HIDL methods exposed.
+    Return<void> registerEventCallback(
+        const sp<IWifiEventCallback>& event_callback,
+        registerEventCallback_cb hidl_status_cb) override;
+    Return<bool> isStarted() override;
+    Return<void> start(start_cb hidl_status_cb) override;
+    Return<void> stop(stop_cb hidl_status_cb) override;
+    Return<void> getChipIds(getChipIds_cb hidl_status_cb) override;
+    Return<void> getChip(ChipId chip_id, getChip_cb hidl_status_cb) override;
+    Return<void> debug(const hidl_handle& handle,
+                       const hidl_vec<hidl_string>& options) override;
+
+   private:
+    enum class RunState { STOPPED, STARTED, STOPPING };
+
+    // Corresponding worker functions for the HIDL methods.
+    WifiStatus registerEventCallbackInternal(
+        const sp<IWifiEventCallback>& event_callback);
+    WifiStatus startInternal();
+    WifiStatus stopInternal(std::unique_lock<std::recursive_mutex>* lock);
+    std::pair<WifiStatus, std::vector<ChipId>> getChipIdsInternal();
+    std::pair<WifiStatus, sp<IWifiChip>> getChipInternal(ChipId chip_id);
+
+    WifiStatus initializeModeControllerAndLegacyHal();
+    WifiStatus stopLegacyHalAndDeinitializeModeController(
+        std::unique_lock<std::recursive_mutex>* lock);
+
+    // Instance is created in this root level |IWifi| HIDL interface object
+    // and shared with all the child HIDL interface objects.
+    std::shared_ptr<wifi_system::InterfaceTool> iface_tool_;
+    std::shared_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
+    std::shared_ptr<mode_controller::WifiModeController> mode_controller_;
+    std::shared_ptr<iface_util::WifiIfaceUtil> iface_util_;
+    std::shared_ptr<feature_flags::WifiFeatureFlags> feature_flags_;
+    RunState run_state_;
+    sp<WifiChip> chip_;
+    hidl_callback_util::HidlCallbackHandler<IWifiEventCallback>
+        event_cb_handler_;
+
+    DISALLOW_COPY_AND_ASSIGN(Wifi);
+};
+
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // WIFI_H_
diff --git a/wifi/1.4/default/wifi_ap_iface.cpp b/wifi/1.4/default/wifi_ap_iface.cpp
new file mode 100644
index 0000000..8777a4c
--- /dev/null
+++ b/wifi/1.4/default/wifi_ap_iface.cpp
@@ -0,0 +1,137 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+
+#include "hidl_return_util.h"
+#include "hidl_struct_util.h"
+#include "wifi_ap_iface.h"
+#include "wifi_status_util.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+using hidl_return_util::validateAndCall;
+
+WifiApIface::WifiApIface(
+    const std::string& ifname,
+    const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
+    const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util)
+    : ifname_(ifname),
+      legacy_hal_(legacy_hal),
+      iface_util_(iface_util),
+      is_valid_(true) {}
+
+void WifiApIface::invalidate() {
+    legacy_hal_.reset();
+    is_valid_ = false;
+}
+
+bool WifiApIface::isValid() { return is_valid_; }
+
+std::string WifiApIface::getName() { return ifname_; }
+
+Return<void> WifiApIface::getName(getName_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiApIface::getNameInternal, hidl_status_cb);
+}
+
+Return<void> WifiApIface::getType(getType_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiApIface::getTypeInternal, hidl_status_cb);
+}
+
+Return<void> WifiApIface::setCountryCode(const hidl_array<int8_t, 2>& code,
+                                         setCountryCode_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiApIface::setCountryCodeInternal, hidl_status_cb,
+                           code);
+}
+
+Return<void> WifiApIface::getValidFrequenciesForBand(
+    V1_0::WifiBand band, getValidFrequenciesForBand_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiApIface::getValidFrequenciesForBandInternal,
+                           hidl_status_cb, band);
+}
+
+Return<void> WifiApIface::setMacAddress(const hidl_array<uint8_t, 6>& mac,
+                                        setMacAddress_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiApIface::setMacAddressInternal, hidl_status_cb,
+                           mac);
+}
+
+Return<void> WifiApIface::getFactoryMacAddress(
+    getFactoryMacAddress_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiApIface::getFactoryMacAddressInternal,
+                           hidl_status_cb);
+}
+
+std::pair<WifiStatus, std::string> WifiApIface::getNameInternal() {
+    return {createWifiStatus(WifiStatusCode::SUCCESS), ifname_};
+}
+
+std::pair<WifiStatus, IfaceType> WifiApIface::getTypeInternal() {
+    return {createWifiStatus(WifiStatusCode::SUCCESS), IfaceType::AP};
+}
+
+WifiStatus WifiApIface::setCountryCodeInternal(
+    const std::array<int8_t, 2>& code) {
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->setCountryCode(ifname_, code);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+std::pair<WifiStatus, std::vector<WifiChannelInMhz>>
+WifiApIface::getValidFrequenciesForBandInternal(V1_0::WifiBand band) {
+    static_assert(sizeof(WifiChannelInMhz) == sizeof(uint32_t),
+                  "Size mismatch");
+    legacy_hal::wifi_error legacy_status;
+    std::vector<uint32_t> valid_frequencies;
+    std::tie(legacy_status, valid_frequencies) =
+        legacy_hal_.lock()->getValidFrequenciesForBand(
+            ifname_, hidl_struct_util::convertHidlWifiBandToLegacy(band));
+    return {createWifiStatusFromLegacyError(legacy_status), valid_frequencies};
+}
+
+WifiStatus WifiApIface::setMacAddressInternal(
+    const std::array<uint8_t, 6>& mac) {
+    bool status = iface_util_.lock()->setMacAddress(ifname_, mac);
+    if (!status) {
+        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+    }
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+std::pair<WifiStatus, std::array<uint8_t, 6>>
+WifiApIface::getFactoryMacAddressInternal() {
+    std::array<uint8_t, 6> mac =
+        iface_util_.lock()->getFactoryMacAddress(ifname_);
+    if (mac[0] == 0 && mac[1] == 0 && mac[2] == 0 && mac[3] == 0 &&
+        mac[4] == 0 && mac[5] == 0) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), mac};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), mac};
+}
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.4/default/wifi_ap_iface.h b/wifi/1.4/default/wifi_ap_iface.h
new file mode 100644
index 0000000..bf16d5e
--- /dev/null
+++ b/wifi/1.4/default/wifi_ap_iface.h
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef WIFI_AP_IFACE_H_
+#define WIFI_AP_IFACE_H_
+
+#include <android-base/macros.h>
+#include <android/hardware/wifi/1.4/IWifiApIface.h>
+
+#include "wifi_iface_util.h"
+#include "wifi_legacy_hal.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+using namespace android::hardware::wifi::V1_0;
+
+/**
+ * HIDL interface object used to control a AP Iface instance.
+ */
+class WifiApIface : public V1_4::IWifiApIface {
+   public:
+    WifiApIface(const std::string& ifname,
+                const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
+                const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util);
+    // Refer to |WifiChip::invalidate()|.
+    void invalidate();
+    bool isValid();
+    std::string getName();
+
+    // HIDL methods exposed.
+    Return<void> getName(getName_cb hidl_status_cb) override;
+    Return<void> getType(getType_cb hidl_status_cb) override;
+    Return<void> setCountryCode(const hidl_array<int8_t, 2>& code,
+                                setCountryCode_cb hidl_status_cb) override;
+    Return<void> getValidFrequenciesForBand(
+        V1_0::WifiBand band,
+        getValidFrequenciesForBand_cb hidl_status_cb) override;
+    Return<void> setMacAddress(const hidl_array<uint8_t, 6>& mac,
+                               setMacAddress_cb hidl_status_cb) override;
+    Return<void> getFactoryMacAddress(
+        getFactoryMacAddress_cb hidl_status_cb) override;
+
+   private:
+    // Corresponding worker functions for the HIDL methods.
+    std::pair<WifiStatus, std::string> getNameInternal();
+    std::pair<WifiStatus, IfaceType> getTypeInternal();
+    WifiStatus setCountryCodeInternal(const std::array<int8_t, 2>& code);
+    std::pair<WifiStatus, std::vector<WifiChannelInMhz>>
+    getValidFrequenciesForBandInternal(V1_0::WifiBand band);
+    WifiStatus setMacAddressInternal(const std::array<uint8_t, 6>& mac);
+    std::pair<WifiStatus, std::array<uint8_t, 6>>
+    getFactoryMacAddressInternal();
+
+    std::string ifname_;
+    std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
+    std::weak_ptr<iface_util::WifiIfaceUtil> iface_util_;
+    bool is_valid_;
+
+    DISALLOW_COPY_AND_ASSIGN(WifiApIface);
+};
+
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // WIFI_AP_IFACE_H_
diff --git a/wifi/1.4/default/wifi_chip.cpp b/wifi/1.4/default/wifi_chip.cpp
new file mode 100644
index 0000000..3498510
--- /dev/null
+++ b/wifi/1.4/default/wifi_chip.cpp
@@ -0,0 +1,1579 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <fcntl.h>
+
+#include <android-base/logging.h>
+#include <android-base/unique_fd.h>
+#include <cutils/properties.h>
+#include <sys/stat.h>
+#include <sys/sysmacros.h>
+
+#include "hidl_return_util.h"
+#include "hidl_struct_util.h"
+#include "wifi_chip.h"
+#include "wifi_status_util.h"
+
+namespace {
+using android::sp;
+using android::base::unique_fd;
+using android::hardware::hidl_string;
+using android::hardware::hidl_vec;
+using android::hardware::wifi::V1_0::ChipModeId;
+using android::hardware::wifi::V1_0::IfaceType;
+using android::hardware::wifi::V1_0::IWifiChip;
+
+constexpr char kCpioMagic[] = "070701";
+constexpr size_t kMaxBufferSizeBytes = 1024 * 1024 * 3;
+constexpr uint32_t kMaxRingBufferFileAgeSeconds = 60 * 60 * 10;
+constexpr uint32_t kMaxRingBufferFileNum = 20;
+constexpr char kTombstoneFolderPath[] = "/data/vendor/tombstones/wifi/";
+constexpr char kActiveWlanIfaceNameProperty[] = "wifi.active.interface";
+constexpr char kNoActiveWlanIfaceNamePropertyValue[] = "";
+constexpr unsigned kMaxWlanIfaces = 5;
+
+template <typename Iface>
+void invalidateAndClear(std::vector<sp<Iface>>& ifaces, sp<Iface> iface) {
+    iface->invalidate();
+    ifaces.erase(std::remove(ifaces.begin(), ifaces.end(), iface),
+                 ifaces.end());
+}
+
+template <typename Iface>
+void invalidateAndClearAll(std::vector<sp<Iface>>& ifaces) {
+    for (const auto& iface : ifaces) {
+        iface->invalidate();
+    }
+    ifaces.clear();
+}
+
+template <typename Iface>
+std::vector<hidl_string> getNames(std::vector<sp<Iface>>& ifaces) {
+    std::vector<hidl_string> names;
+    for (const auto& iface : ifaces) {
+        names.emplace_back(iface->getName());
+    }
+    return names;
+}
+
+template <typename Iface>
+sp<Iface> findUsingName(std::vector<sp<Iface>>& ifaces,
+                        const std::string& name) {
+    std::vector<hidl_string> names;
+    for (const auto& iface : ifaces) {
+        if (name == iface->getName()) {
+            return iface;
+        }
+    }
+    return nullptr;
+}
+
+std::string getWlanIfaceName(unsigned idx) {
+    if (idx >= kMaxWlanIfaces) {
+        CHECK(false) << "Requested interface beyond wlan" << kMaxWlanIfaces;
+        return {};
+    }
+
+    std::array<char, PROPERTY_VALUE_MAX> buffer;
+    if (idx == 0 || idx == 1) {
+        const char* altPropName =
+            (idx == 0) ? "wifi.interface" : "wifi.concurrent.interface";
+        auto res = property_get(altPropName, buffer.data(), nullptr);
+        if (res > 0) return buffer.data();
+    }
+    std::string propName = "wifi.interface." + std::to_string(idx);
+    auto res = property_get(propName.c_str(), buffer.data(), nullptr);
+    if (res > 0) return buffer.data();
+
+    return "wlan" + std::to_string(idx);
+}
+
+std::string getP2pIfaceName() {
+    std::array<char, PROPERTY_VALUE_MAX> buffer;
+    property_get("wifi.direct.interface", buffer.data(), "p2p0");
+    return buffer.data();
+}
+
+void setActiveWlanIfaceNameProperty(const std::string& ifname) {
+    auto res = property_set(kActiveWlanIfaceNameProperty, ifname.data());
+    if (res != 0) {
+        PLOG(ERROR) << "Failed to set active wlan iface name property";
+    }
+}
+
+// delete files that meet either conditions:
+// 1. older than a predefined time in the wifi tombstone dir.
+// 2. Files in excess to a predefined amount, starting from the oldest ones
+bool removeOldFilesInternal() {
+    time_t now = time(0);
+    const time_t delete_files_before = now - kMaxRingBufferFileAgeSeconds;
+    std::unique_ptr<DIR, decltype(&closedir)> dir_dump(
+        opendir(kTombstoneFolderPath), closedir);
+    if (!dir_dump) {
+        PLOG(ERROR) << "Failed to open directory";
+        return false;
+    }
+    struct dirent* dp;
+    bool success = true;
+    std::list<std::pair<const time_t, std::string>> valid_files;
+    while ((dp = readdir(dir_dump.get()))) {
+        if (dp->d_type != DT_REG) {
+            continue;
+        }
+        std::string cur_file_name(dp->d_name);
+        struct stat cur_file_stat;
+        std::string cur_file_path = kTombstoneFolderPath + cur_file_name;
+        if (stat(cur_file_path.c_str(), &cur_file_stat) == -1) {
+            PLOG(ERROR) << "Failed to get file stat for " << cur_file_path;
+            success = false;
+            continue;
+        }
+        const time_t cur_file_time = cur_file_stat.st_mtime;
+        valid_files.push_back(
+            std::pair<const time_t, std::string>(cur_file_time, cur_file_path));
+    }
+    valid_files.sort();  // sort the list of files by last modified time from
+                         // small to big.
+    uint32_t cur_file_count = valid_files.size();
+    for (auto cur_file : valid_files) {
+        if (cur_file_count > kMaxRingBufferFileNum ||
+            cur_file.first < delete_files_before) {
+            if (unlink(cur_file.second.c_str()) != 0) {
+                PLOG(ERROR) << "Error deleting file";
+                success = false;
+            }
+            cur_file_count--;
+        } else {
+            break;
+        }
+    }
+    return success;
+}
+
+// Helper function for |cpioArchiveFilesInDir|
+bool cpioWriteHeader(int out_fd, struct stat& st, const char* file_name,
+                     size_t file_name_len) {
+    std::array<char, 32 * 1024> read_buf;
+    ssize_t llen =
+        sprintf(read_buf.data(),
+                "%s%08X%08X%08X%08X%08X%08X%08X%08X%08X%08X%08X%08X%08X",
+                kCpioMagic, static_cast<int>(st.st_ino), st.st_mode, st.st_uid,
+                st.st_gid, static_cast<int>(st.st_nlink),
+                static_cast<int>(st.st_mtime), static_cast<int>(st.st_size),
+                major(st.st_dev), minor(st.st_dev), major(st.st_rdev),
+                minor(st.st_rdev), static_cast<uint32_t>(file_name_len), 0);
+    if (write(out_fd, read_buf.data(), llen) == -1) {
+        PLOG(ERROR) << "Error writing cpio header to file " << file_name;
+        return false;
+    }
+    if (write(out_fd, file_name, file_name_len) == -1) {
+        PLOG(ERROR) << "Error writing filename to file " << file_name;
+        return false;
+    }
+
+    // NUL Pad header up to 4 multiple bytes.
+    llen = (llen + file_name_len) % 4;
+    if (llen != 0) {
+        const uint32_t zero = 0;
+        if (write(out_fd, &zero, 4 - llen) == -1) {
+            PLOG(ERROR) << "Error padding 0s to file " << file_name;
+            return false;
+        }
+    }
+    return true;
+}
+
+// Helper function for |cpioArchiveFilesInDir|
+size_t cpioWriteFileContent(int fd_read, int out_fd, struct stat& st) {
+    // writing content of file
+    std::array<char, 32 * 1024> read_buf;
+    ssize_t llen = st.st_size;
+    size_t n_error = 0;
+    while (llen > 0) {
+        ssize_t bytes_read = read(fd_read, read_buf.data(), read_buf.size());
+        if (bytes_read == -1) {
+            PLOG(ERROR) << "Error reading file";
+            return ++n_error;
+        }
+        llen -= bytes_read;
+        if (write(out_fd, read_buf.data(), bytes_read) == -1) {
+            PLOG(ERROR) << "Error writing data to file";
+            return ++n_error;
+        }
+        if (bytes_read == 0) {  // this should never happen, but just in case
+                                // to unstuck from while loop
+            PLOG(ERROR) << "Unexpected read result";
+            n_error++;
+            break;
+        }
+    }
+    llen = st.st_size % 4;
+    if (llen != 0) {
+        const uint32_t zero = 0;
+        if (write(out_fd, &zero, 4 - llen) == -1) {
+            PLOG(ERROR) << "Error padding 0s to file";
+            return ++n_error;
+        }
+    }
+    return n_error;
+}
+
+// Helper function for |cpioArchiveFilesInDir|
+bool cpioWriteFileTrailer(int out_fd) {
+    std::array<char, 4096> read_buf;
+    read_buf.fill(0);
+    if (write(out_fd, read_buf.data(),
+              sprintf(read_buf.data(), "070701%040X%056X%08XTRAILER!!!", 1,
+                      0x0b, 0) +
+                  4) == -1) {
+        PLOG(ERROR) << "Error writing trailing bytes";
+        return false;
+    }
+    return true;
+}
+
+// Archives all files in |input_dir| and writes result into |out_fd|
+// Logic obtained from //external/toybox/toys/posix/cpio.c "Output cpio archive"
+// portion
+size_t cpioArchiveFilesInDir(int out_fd, const char* input_dir) {
+    struct dirent* dp;
+    size_t n_error = 0;
+    std::unique_ptr<DIR, decltype(&closedir)> dir_dump(opendir(input_dir),
+                                                       closedir);
+    if (!dir_dump) {
+        PLOG(ERROR) << "Failed to open directory";
+        return ++n_error;
+    }
+    while ((dp = readdir(dir_dump.get()))) {
+        if (dp->d_type != DT_REG) {
+            continue;
+        }
+        std::string cur_file_name(dp->d_name);
+        // string.size() does not include the null terminator. The cpio FreeBSD
+        // file header expects the null character to be included in the length.
+        const size_t file_name_len = cur_file_name.size() + 1;
+        struct stat st;
+        const std::string cur_file_path = kTombstoneFolderPath + cur_file_name;
+        if (stat(cur_file_path.c_str(), &st) == -1) {
+            PLOG(ERROR) << "Failed to get file stat for " << cur_file_path;
+            n_error++;
+            continue;
+        }
+        const int fd_read = open(cur_file_path.c_str(), O_RDONLY);
+        if (fd_read == -1) {
+            PLOG(ERROR) << "Failed to open file " << cur_file_path;
+            n_error++;
+            continue;
+        }
+        unique_fd file_auto_closer(fd_read);
+        if (!cpioWriteHeader(out_fd, st, cur_file_name.c_str(),
+                             file_name_len)) {
+            return ++n_error;
+        }
+        size_t write_error = cpioWriteFileContent(fd_read, out_fd, st);
+        if (write_error) {
+            return n_error + write_error;
+        }
+    }
+    if (!cpioWriteFileTrailer(out_fd)) {
+        return ++n_error;
+    }
+    return n_error;
+}
+
+// Helper function to create a non-const char*.
+std::vector<char> makeCharVec(const std::string& str) {
+    std::vector<char> vec(str.size() + 1);
+    vec.assign(str.begin(), str.end());
+    vec.push_back('\0');
+    return vec;
+}
+
+}  // namespace
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+using hidl_return_util::validateAndCall;
+using hidl_return_util::validateAndCallWithLock;
+
+WifiChip::WifiChip(
+    ChipId chip_id, const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
+    const std::weak_ptr<mode_controller::WifiModeController> mode_controller,
+    const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util,
+    const std::weak_ptr<feature_flags::WifiFeatureFlags> feature_flags)
+    : chip_id_(chip_id),
+      legacy_hal_(legacy_hal),
+      mode_controller_(mode_controller),
+      iface_util_(iface_util),
+      is_valid_(true),
+      current_mode_id_(feature_flags::chip_mode_ids::kInvalid),
+      modes_(feature_flags.lock()->getChipModes()),
+      debug_ring_buffer_cb_registered_(false) {
+    setActiveWlanIfaceNameProperty(kNoActiveWlanIfaceNamePropertyValue);
+}
+
+void WifiChip::invalidate() {
+    if (!writeRingbufferFilesInternal()) {
+        LOG(ERROR) << "Error writing files to flash";
+    }
+    invalidateAndRemoveAllIfaces();
+    setActiveWlanIfaceNameProperty(kNoActiveWlanIfaceNamePropertyValue);
+    legacy_hal_.reset();
+    event_cb_handler_.invalidate();
+    is_valid_ = false;
+}
+
+bool WifiChip::isValid() { return is_valid_; }
+
+std::set<sp<IWifiChipEventCallback>> WifiChip::getEventCallbacks() {
+    return event_cb_handler_.getCallbacks();
+}
+
+Return<void> WifiChip::getId(getId_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getIdInternal, hidl_status_cb);
+}
+
+// Deprecated support for this callback
+Return<void> WifiChip::registerEventCallback(
+    const sp<V1_0::IWifiChipEventCallback>& event_callback,
+    registerEventCallback_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::registerEventCallbackInternal,
+                           hidl_status_cb, event_callback);
+}
+
+Return<void> WifiChip::getCapabilities(getCapabilities_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getCapabilitiesInternal, hidl_status_cb);
+}
+
+Return<void> WifiChip::getAvailableModes(getAvailableModes_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getAvailableModesInternal,
+                           hidl_status_cb);
+}
+
+Return<void> WifiChip::configureChip(ChipModeId mode_id,
+                                     configureChip_cb hidl_status_cb) {
+    return validateAndCallWithLock(
+        this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+        &WifiChip::configureChipInternal, hidl_status_cb, mode_id);
+}
+
+Return<void> WifiChip::getMode(getMode_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getModeInternal, hidl_status_cb);
+}
+
+Return<void> WifiChip::requestChipDebugInfo(
+    requestChipDebugInfo_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::requestChipDebugInfoInternal,
+                           hidl_status_cb);
+}
+
+Return<void> WifiChip::requestDriverDebugDump(
+    requestDriverDebugDump_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::requestDriverDebugDumpInternal,
+                           hidl_status_cb);
+}
+
+Return<void> WifiChip::requestFirmwareDebugDump(
+    requestFirmwareDebugDump_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::requestFirmwareDebugDumpInternal,
+                           hidl_status_cb);
+}
+
+Return<void> WifiChip::createApIface(createApIface_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::createApIfaceInternal, hidl_status_cb);
+}
+
+Return<void> WifiChip::getApIfaceNames(getApIfaceNames_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getApIfaceNamesInternal, hidl_status_cb);
+}
+
+Return<void> WifiChip::getApIface(const hidl_string& ifname,
+                                  getApIface_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getApIfaceInternal, hidl_status_cb,
+                           ifname);
+}
+
+Return<void> WifiChip::removeApIface(const hidl_string& ifname,
+                                     removeApIface_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::removeApIfaceInternal, hidl_status_cb,
+                           ifname);
+}
+
+Return<void> WifiChip::createNanIface(createNanIface_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::createNanIfaceInternal, hidl_status_cb);
+}
+
+Return<void> WifiChip::getNanIfaceNames(getNanIfaceNames_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getNanIfaceNamesInternal, hidl_status_cb);
+}
+
+Return<void> WifiChip::getNanIface(const hidl_string& ifname,
+                                   getNanIface_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getNanIfaceInternal, hidl_status_cb,
+                           ifname);
+}
+
+Return<void> WifiChip::removeNanIface(const hidl_string& ifname,
+                                      removeNanIface_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::removeNanIfaceInternal, hidl_status_cb,
+                           ifname);
+}
+
+Return<void> WifiChip::createP2pIface(createP2pIface_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::createP2pIfaceInternal, hidl_status_cb);
+}
+
+Return<void> WifiChip::getP2pIfaceNames(getP2pIfaceNames_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getP2pIfaceNamesInternal, hidl_status_cb);
+}
+
+Return<void> WifiChip::getP2pIface(const hidl_string& ifname,
+                                   getP2pIface_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getP2pIfaceInternal, hidl_status_cb,
+                           ifname);
+}
+
+Return<void> WifiChip::removeP2pIface(const hidl_string& ifname,
+                                      removeP2pIface_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::removeP2pIfaceInternal, hidl_status_cb,
+                           ifname);
+}
+
+Return<void> WifiChip::createStaIface(createStaIface_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::createStaIfaceInternal, hidl_status_cb);
+}
+
+Return<void> WifiChip::getStaIfaceNames(getStaIfaceNames_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getStaIfaceNamesInternal, hidl_status_cb);
+}
+
+Return<void> WifiChip::getStaIface(const hidl_string& ifname,
+                                   getStaIface_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getStaIfaceInternal, hidl_status_cb,
+                           ifname);
+}
+
+Return<void> WifiChip::removeStaIface(const hidl_string& ifname,
+                                      removeStaIface_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::removeStaIfaceInternal, hidl_status_cb,
+                           ifname);
+}
+
+Return<void> WifiChip::createRttController(
+    const sp<IWifiIface>& bound_iface, createRttController_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::createRttControllerInternal,
+                           hidl_status_cb, bound_iface);
+}
+
+Return<void> WifiChip::getDebugRingBuffersStatus(
+    getDebugRingBuffersStatus_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getDebugRingBuffersStatusInternal,
+                           hidl_status_cb);
+}
+
+Return<void> WifiChip::startLoggingToDebugRingBuffer(
+    const hidl_string& ring_name, WifiDebugRingBufferVerboseLevel verbose_level,
+    uint32_t max_interval_in_sec, uint32_t min_data_size_in_bytes,
+    startLoggingToDebugRingBuffer_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::startLoggingToDebugRingBufferInternal,
+                           hidl_status_cb, ring_name, verbose_level,
+                           max_interval_in_sec, min_data_size_in_bytes);
+}
+
+Return<void> WifiChip::forceDumpToDebugRingBuffer(
+    const hidl_string& ring_name,
+    forceDumpToDebugRingBuffer_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::forceDumpToDebugRingBufferInternal,
+                           hidl_status_cb, ring_name);
+}
+
+Return<void> WifiChip::flushRingBufferToFile(
+    flushRingBufferToFile_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::flushRingBufferToFileInternal,
+                           hidl_status_cb);
+}
+
+Return<void> WifiChip::stopLoggingToDebugRingBuffer(
+    stopLoggingToDebugRingBuffer_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::stopLoggingToDebugRingBufferInternal,
+                           hidl_status_cb);
+}
+
+Return<void> WifiChip::getDebugHostWakeReasonStats(
+    getDebugHostWakeReasonStats_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getDebugHostWakeReasonStatsInternal,
+                           hidl_status_cb);
+}
+
+Return<void> WifiChip::enableDebugErrorAlerts(
+    bool enable, enableDebugErrorAlerts_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::enableDebugErrorAlertsInternal,
+                           hidl_status_cb, enable);
+}
+
+Return<void> WifiChip::selectTxPowerScenario(
+    V1_1::IWifiChip::TxPowerScenario scenario,
+    selectTxPowerScenario_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::selectTxPowerScenarioInternal,
+                           hidl_status_cb, scenario);
+}
+
+Return<void> WifiChip::resetTxPowerScenario(
+    resetTxPowerScenario_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::resetTxPowerScenarioInternal,
+                           hidl_status_cb);
+}
+
+Return<void> WifiChip::setLatencyMode(LatencyMode mode,
+                                      setLatencyMode_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::setLatencyModeInternal, hidl_status_cb,
+                           mode);
+}
+
+Return<void> WifiChip::registerEventCallback_1_2(
+    const sp<V1_2::IWifiChipEventCallback>& event_callback,
+    registerEventCallback_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::registerEventCallbackInternal_1_2,
+                           hidl_status_cb, event_callback);
+}
+
+Return<void> WifiChip::selectTxPowerScenario_1_2(
+    TxPowerScenario scenario, selectTxPowerScenario_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::selectTxPowerScenarioInternal_1_2,
+                           hidl_status_cb, scenario);
+}
+
+Return<void> WifiChip::getCapabilities_1_3(getCapabilities_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::getCapabilitiesInternal_1_3,
+                           hidl_status_cb);
+}
+
+Return<void> WifiChip::debug(const hidl_handle& handle,
+                             const hidl_vec<hidl_string>&) {
+    if (handle != nullptr && handle->numFds >= 1) {
+        int fd = handle->data[0];
+        if (!writeRingbufferFilesInternal()) {
+            LOG(ERROR) << "Error writing files to flash";
+        }
+        uint32_t n_error = cpioArchiveFilesInDir(fd, kTombstoneFolderPath);
+        if (n_error != 0) {
+            LOG(ERROR) << n_error << " errors occured in cpio function";
+        }
+        fsync(fd);
+    } else {
+        LOG(ERROR) << "File handle error";
+    }
+    return Void();
+}
+
+Return<void> WifiChip::createRttController_1_4(
+    const sp<IWifiIface>& bound_iface,
+    createRttController_1_4_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::createRttControllerInternal_1_4,
+                           hidl_status_cb, bound_iface);
+}
+
+Return<void> WifiChip::registerEventCallback_1_4(
+    const sp<IWifiChipEventCallback>& event_callback,
+    registerEventCallback_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_CHIP_INVALID,
+                           &WifiChip::registerEventCallbackInternal_1_4,
+                           hidl_status_cb, event_callback);
+}
+
+void WifiChip::invalidateAndRemoveAllIfaces() {
+    invalidateAndClearAll(ap_ifaces_);
+    invalidateAndClearAll(nan_ifaces_);
+    invalidateAndClearAll(p2p_ifaces_);
+    invalidateAndClearAll(sta_ifaces_);
+    // Since all the ifaces are invalid now, all RTT controller objects
+    // using those ifaces also need to be invalidated.
+    for (const auto& rtt : rtt_controllers_) {
+        rtt->invalidate();
+    }
+    rtt_controllers_.clear();
+}
+
+void WifiChip::invalidateAndRemoveDependencies(
+    const std::string& removed_iface_name) {
+    for (const auto& nan_iface : nan_ifaces_) {
+        if (nan_iface->getName() == removed_iface_name) {
+            invalidateAndClear(nan_ifaces_, nan_iface);
+            for (const auto& callback : event_cb_handler_.getCallbacks()) {
+                if (!callback
+                         ->onIfaceRemoved(IfaceType::NAN, removed_iface_name)
+                         .isOk()) {
+                    LOG(ERROR) << "Failed to invoke onIfaceRemoved callback";
+                }
+            }
+        }
+    }
+    for (const auto& rtt : rtt_controllers_) {
+        if (rtt->getIfaceName() == removed_iface_name) {
+            invalidateAndClear(rtt_controllers_, rtt);
+        }
+    }
+}
+
+std::pair<WifiStatus, ChipId> WifiChip::getIdInternal() {
+    return {createWifiStatus(WifiStatusCode::SUCCESS), chip_id_};
+}
+
+WifiStatus WifiChip::registerEventCallbackInternal(
+    const sp<V1_0::IWifiChipEventCallback>& /* event_callback */) {
+    // Deprecated support for this callback.
+    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
+}
+
+std::pair<WifiStatus, uint32_t> WifiChip::getCapabilitiesInternal() {
+    // Deprecated support for this callback.
+    return {createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED), 0};
+}
+
+std::pair<WifiStatus, std::vector<IWifiChip::ChipMode>>
+WifiChip::getAvailableModesInternal() {
+    return {createWifiStatus(WifiStatusCode::SUCCESS), modes_};
+}
+
+WifiStatus WifiChip::configureChipInternal(
+    /* NONNULL */ std::unique_lock<std::recursive_mutex>* lock,
+    ChipModeId mode_id) {
+    if (!isValidModeId(mode_id)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    if (mode_id == current_mode_id_) {
+        LOG(DEBUG) << "Already in the specified mode " << mode_id;
+        return createWifiStatus(WifiStatusCode::SUCCESS);
+    }
+    WifiStatus status = handleChipConfiguration(lock, mode_id);
+    if (status.code != WifiStatusCode::SUCCESS) {
+        for (const auto& callback : event_cb_handler_.getCallbacks()) {
+            if (!callback->onChipReconfigureFailure(status).isOk()) {
+                LOG(ERROR)
+                    << "Failed to invoke onChipReconfigureFailure callback";
+            }
+        }
+        return status;
+    }
+    for (const auto& callback : event_cb_handler_.getCallbacks()) {
+        if (!callback->onChipReconfigured(mode_id).isOk()) {
+            LOG(ERROR) << "Failed to invoke onChipReconfigured callback";
+        }
+    }
+    current_mode_id_ = mode_id;
+    LOG(INFO) << "Configured chip in mode " << mode_id;
+    setActiveWlanIfaceNameProperty(getFirstActiveWlanIfaceName());
+    return status;
+}
+
+std::pair<WifiStatus, uint32_t> WifiChip::getModeInternal() {
+    if (!isValidModeId(current_mode_id_)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE),
+                current_mode_id_};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), current_mode_id_};
+}
+
+std::pair<WifiStatus, IWifiChip::ChipDebugInfo>
+WifiChip::requestChipDebugInfoInternal() {
+    IWifiChip::ChipDebugInfo result;
+    legacy_hal::wifi_error legacy_status;
+    std::string driver_desc;
+    const auto ifname = getFirstActiveWlanIfaceName();
+    std::tie(legacy_status, driver_desc) =
+        legacy_hal_.lock()->getDriverVersion(ifname);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        LOG(ERROR) << "Failed to get driver version: "
+                   << legacyErrorToString(legacy_status);
+        WifiStatus status = createWifiStatusFromLegacyError(
+            legacy_status, "failed to get driver version");
+        return {status, result};
+    }
+    result.driverDescription = driver_desc.c_str();
+
+    std::string firmware_desc;
+    std::tie(legacy_status, firmware_desc) =
+        legacy_hal_.lock()->getFirmwareVersion(ifname);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        LOG(ERROR) << "Failed to get firmware version: "
+                   << legacyErrorToString(legacy_status);
+        WifiStatus status = createWifiStatusFromLegacyError(
+            legacy_status, "failed to get firmware version");
+        return {status, result};
+    }
+    result.firmwareDescription = firmware_desc.c_str();
+
+    return {createWifiStatus(WifiStatusCode::SUCCESS), result};
+}
+
+std::pair<WifiStatus, std::vector<uint8_t>>
+WifiChip::requestDriverDebugDumpInternal() {
+    legacy_hal::wifi_error legacy_status;
+    std::vector<uint8_t> driver_dump;
+    std::tie(legacy_status, driver_dump) =
+        legacy_hal_.lock()->requestDriverMemoryDump(
+            getFirstActiveWlanIfaceName());
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        LOG(ERROR) << "Failed to get driver debug dump: "
+                   << legacyErrorToString(legacy_status);
+        return {createWifiStatusFromLegacyError(legacy_status),
+                std::vector<uint8_t>()};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), driver_dump};
+}
+
+std::pair<WifiStatus, std::vector<uint8_t>>
+WifiChip::requestFirmwareDebugDumpInternal() {
+    legacy_hal::wifi_error legacy_status;
+    std::vector<uint8_t> firmware_dump;
+    std::tie(legacy_status, firmware_dump) =
+        legacy_hal_.lock()->requestFirmwareMemoryDump(
+            getFirstActiveWlanIfaceName());
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        LOG(ERROR) << "Failed to get firmware debug dump: "
+                   << legacyErrorToString(legacy_status);
+        return {createWifiStatusFromLegacyError(legacy_status), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), firmware_dump};
+}
+
+std::pair<WifiStatus, sp<IWifiApIface>> WifiChip::createApIfaceInternal() {
+    if (!canCurrentModeSupportIfaceOfTypeWithCurrentIfaces(IfaceType::AP)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
+    }
+    std::string ifname = allocateApIfaceName();
+    sp<WifiApIface> iface = new WifiApIface(ifname, legacy_hal_, iface_util_);
+    ap_ifaces_.push_back(iface);
+    for (const auto& callback : event_cb_handler_.getCallbacks()) {
+        if (!callback->onIfaceAdded(IfaceType::AP, ifname).isOk()) {
+            LOG(ERROR) << "Failed to invoke onIfaceAdded callback";
+        }
+    }
+    setActiveWlanIfaceNameProperty(getFirstActiveWlanIfaceName());
+    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
+}
+
+std::pair<WifiStatus, std::vector<hidl_string>>
+WifiChip::getApIfaceNamesInternal() {
+    if (ap_ifaces_.empty()) {
+        return {createWifiStatus(WifiStatusCode::SUCCESS), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), getNames(ap_ifaces_)};
+}
+
+std::pair<WifiStatus, sp<IWifiApIface>> WifiChip::getApIfaceInternal(
+    const std::string& ifname) {
+    const auto iface = findUsingName(ap_ifaces_, ifname);
+    if (!iface.get()) {
+        return {createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS), nullptr};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
+}
+
+WifiStatus WifiChip::removeApIfaceInternal(const std::string& ifname) {
+    const auto iface = findUsingName(ap_ifaces_, ifname);
+    if (!iface.get()) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    // Invalidate & remove any dependent objects first.
+    // Note: This is probably not required because we never create
+    // nan/rtt objects over AP iface. But, there is no harm to do it
+    // here and not make that assumption all over the place.
+    invalidateAndRemoveDependencies(ifname);
+    invalidateAndClear(ap_ifaces_, iface);
+    for (const auto& callback : event_cb_handler_.getCallbacks()) {
+        if (!callback->onIfaceRemoved(IfaceType::AP, ifname).isOk()) {
+            LOG(ERROR) << "Failed to invoke onIfaceRemoved callback";
+        }
+    }
+    setActiveWlanIfaceNameProperty(getFirstActiveWlanIfaceName());
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+std::pair<WifiStatus, sp<IWifiNanIface>> WifiChip::createNanIfaceInternal() {
+    if (!canCurrentModeSupportIfaceOfTypeWithCurrentIfaces(IfaceType::NAN)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
+    }
+    // These are still assumed to be based on wlan0.
+    std::string ifname = getFirstActiveWlanIfaceName();
+    sp<WifiNanIface> iface = new WifiNanIface(ifname, legacy_hal_, iface_util_);
+    nan_ifaces_.push_back(iface);
+    for (const auto& callback : event_cb_handler_.getCallbacks()) {
+        if (!callback->onIfaceAdded(IfaceType::NAN, ifname).isOk()) {
+            LOG(ERROR) << "Failed to invoke onIfaceAdded callback";
+        }
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
+}
+
+std::pair<WifiStatus, std::vector<hidl_string>>
+WifiChip::getNanIfaceNamesInternal() {
+    if (nan_ifaces_.empty()) {
+        return {createWifiStatus(WifiStatusCode::SUCCESS), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), getNames(nan_ifaces_)};
+}
+
+std::pair<WifiStatus, sp<IWifiNanIface>> WifiChip::getNanIfaceInternal(
+    const std::string& ifname) {
+    const auto iface = findUsingName(nan_ifaces_, ifname);
+    if (!iface.get()) {
+        return {createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS), nullptr};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
+}
+
+WifiStatus WifiChip::removeNanIfaceInternal(const std::string& ifname) {
+    const auto iface = findUsingName(nan_ifaces_, ifname);
+    if (!iface.get()) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    invalidateAndClear(nan_ifaces_, iface);
+    for (const auto& callback : event_cb_handler_.getCallbacks()) {
+        if (!callback->onIfaceRemoved(IfaceType::NAN, ifname).isOk()) {
+            LOG(ERROR) << "Failed to invoke onIfaceAdded callback";
+        }
+    }
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+std::pair<WifiStatus, sp<IWifiP2pIface>> WifiChip::createP2pIfaceInternal() {
+    if (!canCurrentModeSupportIfaceOfTypeWithCurrentIfaces(IfaceType::P2P)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
+    }
+    std::string ifname = getP2pIfaceName();
+    sp<WifiP2pIface> iface = new WifiP2pIface(ifname, legacy_hal_);
+    p2p_ifaces_.push_back(iface);
+    for (const auto& callback : event_cb_handler_.getCallbacks()) {
+        if (!callback->onIfaceAdded(IfaceType::P2P, ifname).isOk()) {
+            LOG(ERROR) << "Failed to invoke onIfaceAdded callback";
+        }
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
+}
+
+std::pair<WifiStatus, std::vector<hidl_string>>
+WifiChip::getP2pIfaceNamesInternal() {
+    if (p2p_ifaces_.empty()) {
+        return {createWifiStatus(WifiStatusCode::SUCCESS), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), getNames(p2p_ifaces_)};
+}
+
+std::pair<WifiStatus, sp<IWifiP2pIface>> WifiChip::getP2pIfaceInternal(
+    const std::string& ifname) {
+    const auto iface = findUsingName(p2p_ifaces_, ifname);
+    if (!iface.get()) {
+        return {createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS), nullptr};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
+}
+
+WifiStatus WifiChip::removeP2pIfaceInternal(const std::string& ifname) {
+    const auto iface = findUsingName(p2p_ifaces_, ifname);
+    if (!iface.get()) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    invalidateAndClear(p2p_ifaces_, iface);
+    for (const auto& callback : event_cb_handler_.getCallbacks()) {
+        if (!callback->onIfaceRemoved(IfaceType::P2P, ifname).isOk()) {
+            LOG(ERROR) << "Failed to invoke onIfaceRemoved callback";
+        }
+    }
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+std::pair<WifiStatus, sp<V1_3::IWifiStaIface>>
+WifiChip::createStaIfaceInternal() {
+    if (!canCurrentModeSupportIfaceOfTypeWithCurrentIfaces(IfaceType::STA)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
+    }
+    std::string ifname = allocateStaIfaceName();
+    sp<WifiStaIface> iface = new WifiStaIface(ifname, legacy_hal_, iface_util_);
+    sta_ifaces_.push_back(iface);
+    for (const auto& callback : event_cb_handler_.getCallbacks()) {
+        if (!callback->onIfaceAdded(IfaceType::STA, ifname).isOk()) {
+            LOG(ERROR) << "Failed to invoke onIfaceAdded callback";
+        }
+    }
+    setActiveWlanIfaceNameProperty(getFirstActiveWlanIfaceName());
+    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
+}
+
+std::pair<WifiStatus, std::vector<hidl_string>>
+WifiChip::getStaIfaceNamesInternal() {
+    if (sta_ifaces_.empty()) {
+        return {createWifiStatus(WifiStatusCode::SUCCESS), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), getNames(sta_ifaces_)};
+}
+
+std::pair<WifiStatus, sp<V1_3::IWifiStaIface>> WifiChip::getStaIfaceInternal(
+    const std::string& ifname) {
+    const auto iface = findUsingName(sta_ifaces_, ifname);
+    if (!iface.get()) {
+        return {createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS), nullptr};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), iface};
+}
+
+WifiStatus WifiChip::removeStaIfaceInternal(const std::string& ifname) {
+    const auto iface = findUsingName(sta_ifaces_, ifname);
+    if (!iface.get()) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    // Invalidate & remove any dependent objects first.
+    invalidateAndRemoveDependencies(ifname);
+    invalidateAndClear(sta_ifaces_, iface);
+    for (const auto& callback : event_cb_handler_.getCallbacks()) {
+        if (!callback->onIfaceRemoved(IfaceType::STA, ifname).isOk()) {
+            LOG(ERROR) << "Failed to invoke onIfaceRemoved callback";
+        }
+    }
+    setActiveWlanIfaceNameProperty(getFirstActiveWlanIfaceName());
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+std::pair<WifiStatus, sp<V1_0::IWifiRttController>>
+WifiChip::createRttControllerInternal(const sp<IWifiIface>& /*bound_iface*/) {
+    LOG(ERROR) << "createRttController is not supported on this HAL";
+    return {createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED), {}};
+}
+
+std::pair<WifiStatus, std::vector<WifiDebugRingBufferStatus>>
+WifiChip::getDebugRingBuffersStatusInternal() {
+    legacy_hal::wifi_error legacy_status;
+    std::vector<legacy_hal::wifi_ring_buffer_status>
+        legacy_ring_buffer_status_vec;
+    std::tie(legacy_status, legacy_ring_buffer_status_vec) =
+        legacy_hal_.lock()->getRingBuffersStatus(getFirstActiveWlanIfaceName());
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        return {createWifiStatusFromLegacyError(legacy_status), {}};
+    }
+    std::vector<WifiDebugRingBufferStatus> hidl_ring_buffer_status_vec;
+    if (!hidl_struct_util::convertLegacyVectorOfDebugRingBufferStatusToHidl(
+            legacy_ring_buffer_status_vec, &hidl_ring_buffer_status_vec)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS),
+            hidl_ring_buffer_status_vec};
+}
+
+WifiStatus WifiChip::startLoggingToDebugRingBufferInternal(
+    const hidl_string& ring_name, WifiDebugRingBufferVerboseLevel verbose_level,
+    uint32_t max_interval_in_sec, uint32_t min_data_size_in_bytes) {
+    WifiStatus status = registerDebugRingBufferCallback();
+    if (status.code != WifiStatusCode::SUCCESS) {
+        return status;
+    }
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->startRingBufferLogging(
+            getFirstActiveWlanIfaceName(), ring_name,
+            static_cast<
+                std::underlying_type<WifiDebugRingBufferVerboseLevel>::type>(
+                verbose_level),
+            max_interval_in_sec, min_data_size_in_bytes);
+    ringbuffer_map_.insert(std::pair<std::string, Ringbuffer>(
+        ring_name, Ringbuffer(kMaxBufferSizeBytes)));
+    // if verbose logging enabled, turn up HAL daemon logging as well.
+    if (verbose_level < WifiDebugRingBufferVerboseLevel::VERBOSE) {
+        android::base::SetMinimumLogSeverity(android::base::DEBUG);
+    } else {
+        android::base::SetMinimumLogSeverity(android::base::VERBOSE);
+    }
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiChip::forceDumpToDebugRingBufferInternal(
+    const hidl_string& ring_name) {
+    WifiStatus status = registerDebugRingBufferCallback();
+    if (status.code != WifiStatusCode::SUCCESS) {
+        return status;
+    }
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->getRingBufferData(getFirstActiveWlanIfaceName(),
+                                              ring_name);
+
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiChip::flushRingBufferToFileInternal() {
+    if (!writeRingbufferFilesInternal()) {
+        LOG(ERROR) << "Error writing files to flash";
+        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+    }
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+WifiStatus WifiChip::stopLoggingToDebugRingBufferInternal() {
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->deregisterRingBufferCallbackHandler(
+            getFirstActiveWlanIfaceName());
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+std::pair<WifiStatus, WifiDebugHostWakeReasonStats>
+WifiChip::getDebugHostWakeReasonStatsInternal() {
+    legacy_hal::wifi_error legacy_status;
+    legacy_hal::WakeReasonStats legacy_stats;
+    std::tie(legacy_status, legacy_stats) =
+        legacy_hal_.lock()->getWakeReasonStats(getFirstActiveWlanIfaceName());
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        return {createWifiStatusFromLegacyError(legacy_status), {}};
+    }
+    WifiDebugHostWakeReasonStats hidl_stats;
+    if (!hidl_struct_util::convertLegacyWakeReasonStatsToHidl(legacy_stats,
+                                                              &hidl_stats)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_stats};
+}
+
+WifiStatus WifiChip::enableDebugErrorAlertsInternal(bool enable) {
+    legacy_hal::wifi_error legacy_status;
+    if (enable) {
+        android::wp<WifiChip> weak_ptr_this(this);
+        const auto& on_alert_callback = [weak_ptr_this](
+                                            int32_t error_code,
+                                            std::vector<uint8_t> debug_data) {
+            const auto shared_ptr_this = weak_ptr_this.promote();
+            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                LOG(ERROR) << "Callback invoked on an invalid object";
+                return;
+            }
+            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                if (!callback->onDebugErrorAlert(error_code, debug_data)
+                         .isOk()) {
+                    LOG(ERROR) << "Failed to invoke onDebugErrorAlert callback";
+                }
+            }
+        };
+        legacy_status = legacy_hal_.lock()->registerErrorAlertCallbackHandler(
+            getFirstActiveWlanIfaceName(), on_alert_callback);
+    } else {
+        legacy_status = legacy_hal_.lock()->deregisterErrorAlertCallbackHandler(
+            getFirstActiveWlanIfaceName());
+    }
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiChip::selectTxPowerScenarioInternal(
+    V1_1::IWifiChip::TxPowerScenario scenario) {
+    auto legacy_status = legacy_hal_.lock()->selectTxPowerScenario(
+        getFirstActiveWlanIfaceName(),
+        hidl_struct_util::convertHidlTxPowerScenarioToLegacy(scenario));
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiChip::resetTxPowerScenarioInternal() {
+    auto legacy_status =
+        legacy_hal_.lock()->resetTxPowerScenario(getFirstActiveWlanIfaceName());
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiChip::setLatencyModeInternal(LatencyMode mode) {
+    auto legacy_status = legacy_hal_.lock()->setLatencyMode(
+        getFirstActiveWlanIfaceName(),
+        hidl_struct_util::convertHidlLatencyModeToLegacy(mode));
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiChip::registerEventCallbackInternal_1_2(
+    const sp<V1_2::IWifiChipEventCallback>& /* event_callback */) {
+    // Deprecated support for this callback.
+    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
+}
+
+WifiStatus WifiChip::selectTxPowerScenarioInternal_1_2(
+    TxPowerScenario scenario) {
+    auto legacy_status = legacy_hal_.lock()->selectTxPowerScenario(
+        getFirstActiveWlanIfaceName(),
+        hidl_struct_util::convertHidlTxPowerScenarioToLegacy_1_2(scenario));
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+std::pair<WifiStatus, uint32_t> WifiChip::getCapabilitiesInternal_1_3() {
+    legacy_hal::wifi_error legacy_status;
+    uint32_t legacy_feature_set;
+    uint32_t legacy_logger_feature_set;
+    const auto ifname = getFirstActiveWlanIfaceName();
+    std::tie(legacy_status, legacy_feature_set) =
+        legacy_hal_.lock()->getSupportedFeatureSet(ifname);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        return {createWifiStatusFromLegacyError(legacy_status), 0};
+    }
+    std::tie(legacy_status, legacy_logger_feature_set) =
+        legacy_hal_.lock()->getLoggerSupportedFeatureSet(ifname);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        // some devices don't support querying logger feature set
+        legacy_logger_feature_set = 0;
+    }
+    uint32_t hidl_caps;
+    if (!hidl_struct_util::convertLegacyFeaturesToHidlChipCapabilities(
+            legacy_feature_set, legacy_logger_feature_set, &hidl_caps)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), 0};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
+}
+
+std::pair<WifiStatus, sp<IWifiRttController>>
+WifiChip::createRttControllerInternal_1_4(const sp<IWifiIface>& bound_iface) {
+    if (sta_ifaces_.size() == 0 &&
+        !canCurrentModeSupportIfaceOfType(IfaceType::STA)) {
+        LOG(ERROR)
+            << "createRttControllerInternal_1_4: Chip cannot support STAs "
+               "(and RTT by extension)";
+        return {createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE), {}};
+    }
+    sp<WifiRttController> rtt = new WifiRttController(
+        getFirstActiveWlanIfaceName(), bound_iface, legacy_hal_);
+    rtt_controllers_.emplace_back(rtt);
+    return {createWifiStatus(WifiStatusCode::SUCCESS), rtt};
+}
+
+WifiStatus WifiChip::registerEventCallbackInternal_1_4(
+    const sp<IWifiChipEventCallback>& event_callback) {
+    if (!event_cb_handler_.addCallback(event_callback)) {
+        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+    }
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+WifiStatus WifiChip::handleChipConfiguration(
+    /* NONNULL */ std::unique_lock<std::recursive_mutex>* lock,
+    ChipModeId mode_id) {
+    // If the chip is already configured in a different mode, stop
+    // the legacy HAL and then start it after firmware mode change.
+    if (isValidModeId(current_mode_id_)) {
+        LOG(INFO) << "Reconfiguring chip from mode " << current_mode_id_
+                  << " to mode " << mode_id;
+        invalidateAndRemoveAllIfaces();
+        legacy_hal::wifi_error legacy_status =
+            legacy_hal_.lock()->stop(lock, []() {});
+        if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+            LOG(ERROR) << "Failed to stop legacy HAL: "
+                       << legacyErrorToString(legacy_status);
+            return createWifiStatusFromLegacyError(legacy_status);
+        }
+    }
+    // Firmware mode change not needed for V2 devices.
+    bool success = true;
+    if (mode_id == feature_flags::chip_mode_ids::kV1Sta) {
+        success = mode_controller_.lock()->changeFirmwareMode(IfaceType::STA);
+    } else if (mode_id == feature_flags::chip_mode_ids::kV1Ap) {
+        success = mode_controller_.lock()->changeFirmwareMode(IfaceType::AP);
+    }
+    if (!success) {
+        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+    }
+    legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->start();
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        LOG(ERROR) << "Failed to start legacy HAL: "
+                   << legacyErrorToString(legacy_status);
+        return createWifiStatusFromLegacyError(legacy_status);
+    }
+    // Every time the HAL is restarted, we need to register the
+    // radio mode change callback.
+    WifiStatus status = registerRadioModeChangeCallback();
+    if (status.code != WifiStatusCode::SUCCESS) {
+        // This probably is not a critical failure?
+        LOG(ERROR) << "Failed to register radio mode change callback";
+    }
+    // Extract and save the version information into property.
+    std::pair<WifiStatus, IWifiChip::ChipDebugInfo> version_info;
+    version_info = WifiChip::requestChipDebugInfoInternal();
+    if (WifiStatusCode::SUCCESS == version_info.first.code) {
+        property_set("vendor.wlan.firmware.version",
+                     version_info.second.firmwareDescription.c_str());
+        property_set("vendor.wlan.driver.version",
+                     version_info.second.driverDescription.c_str());
+    }
+
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+WifiStatus WifiChip::registerDebugRingBufferCallback() {
+    if (debug_ring_buffer_cb_registered_) {
+        return createWifiStatus(WifiStatusCode::SUCCESS);
+    }
+
+    android::wp<WifiChip> weak_ptr_this(this);
+    const auto& on_ring_buffer_data_callback =
+        [weak_ptr_this](const std::string& name,
+                        const std::vector<uint8_t>& data,
+                        const legacy_hal::wifi_ring_buffer_status& status) {
+            const auto shared_ptr_this = weak_ptr_this.promote();
+            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                LOG(ERROR) << "Callback invoked on an invalid object";
+                return;
+            }
+            WifiDebugRingBufferStatus hidl_status;
+            if (!hidl_struct_util::convertLegacyDebugRingBufferStatusToHidl(
+                    status, &hidl_status)) {
+                LOG(ERROR) << "Error converting ring buffer status";
+                return;
+            }
+            const auto& target = shared_ptr_this->ringbuffer_map_.find(name);
+            if (target != shared_ptr_this->ringbuffer_map_.end()) {
+                Ringbuffer& cur_buffer = target->second;
+                cur_buffer.append(data);
+            } else {
+                LOG(ERROR) << "Ringname " << name << " not found";
+                return;
+            }
+        };
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->registerRingBufferCallbackHandler(
+            getFirstActiveWlanIfaceName(), on_ring_buffer_data_callback);
+
+    if (legacy_status == legacy_hal::WIFI_SUCCESS) {
+        debug_ring_buffer_cb_registered_ = true;
+    }
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiChip::registerRadioModeChangeCallback() {
+    android::wp<WifiChip> weak_ptr_this(this);
+    const auto& on_radio_mode_change_callback =
+        [weak_ptr_this](const std::vector<legacy_hal::WifiMacInfo>& mac_infos) {
+            const auto shared_ptr_this = weak_ptr_this.promote();
+            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                LOG(ERROR) << "Callback invoked on an invalid object";
+                return;
+            }
+            std::vector<IWifiChipEventCallback::RadioModeInfo>
+                hidl_radio_mode_infos;
+            if (!hidl_struct_util::convertLegacyWifiMacInfosToHidl(
+                    mac_infos, &hidl_radio_mode_infos)) {
+                LOG(ERROR) << "Error converting wifi mac info";
+                return;
+            }
+            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                if (!callback->onRadioModeChange_1_4(hidl_radio_mode_infos)
+                         .isOk()) {
+                    LOG(ERROR) << "Failed to invoke onRadioModeChange_1_4"
+                               << " callback on: " << toString(callback);
+                }
+            }
+        };
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->registerRadioModeChangeCallbackHandler(
+            getFirstActiveWlanIfaceName(), on_radio_mode_change_callback);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+std::vector<IWifiChip::ChipIfaceCombination>
+WifiChip::getCurrentModeIfaceCombinations() {
+    if (!isValidModeId(current_mode_id_)) {
+        LOG(ERROR) << "Chip not configured in a mode yet";
+        return {};
+    }
+    for (const auto& mode : modes_) {
+        if (mode.id == current_mode_id_) {
+            return mode.availableCombinations;
+        }
+    }
+    CHECK(0) << "Expected to find iface combinations for current mode!";
+    return {};
+}
+
+// Returns a map indexed by IfaceType with the number of ifaces currently
+// created of the corresponding type.
+std::map<IfaceType, size_t> WifiChip::getCurrentIfaceCombination() {
+    std::map<IfaceType, size_t> iface_counts;
+    iface_counts[IfaceType::AP] = ap_ifaces_.size();
+    iface_counts[IfaceType::NAN] = nan_ifaces_.size();
+    iface_counts[IfaceType::P2P] = p2p_ifaces_.size();
+    iface_counts[IfaceType::STA] = sta_ifaces_.size();
+    return iface_counts;
+}
+
+// This expands the provided iface combinations to a more parseable
+// form. Returns a vector of available combinations possible with the number
+// of ifaces of each type in the combination.
+// This method is a port of HalDeviceManager.expandIfaceCombos() from framework.
+std::vector<std::map<IfaceType, size_t>> WifiChip::expandIfaceCombinations(
+    const IWifiChip::ChipIfaceCombination& combination) {
+    uint32_t num_expanded_combos = 1;
+    for (const auto& limit : combination.limits) {
+        for (uint32_t i = 0; i < limit.maxIfaces; i++) {
+            num_expanded_combos *= limit.types.size();
+        }
+    }
+
+    // Allocate the vector of expanded combos and reset all iface counts to 0
+    // in each combo.
+    std::vector<std::map<IfaceType, size_t>> expanded_combos;
+    expanded_combos.resize(num_expanded_combos);
+    for (auto& expanded_combo : expanded_combos) {
+        for (const auto type :
+             {IfaceType::AP, IfaceType::NAN, IfaceType::P2P, IfaceType::STA}) {
+            expanded_combo[type] = 0;
+        }
+    }
+    uint32_t span = num_expanded_combos;
+    for (const auto& limit : combination.limits) {
+        for (uint32_t i = 0; i < limit.maxIfaces; i++) {
+            span /= limit.types.size();
+            for (uint32_t k = 0; k < num_expanded_combos; ++k) {
+                const auto iface_type =
+                    limit.types[(k / span) % limit.types.size()];
+                expanded_combos[k][iface_type]++;
+            }
+        }
+    }
+    return expanded_combos;
+}
+
+bool WifiChip::canExpandedIfaceComboSupportIfaceOfTypeWithCurrentIfaces(
+    const std::map<IfaceType, size_t>& expanded_combo,
+    IfaceType requested_type) {
+    const auto current_combo = getCurrentIfaceCombination();
+
+    // Check if we have space for 1 more iface of |type| in this combo
+    for (const auto type :
+         {IfaceType::AP, IfaceType::NAN, IfaceType::P2P, IfaceType::STA}) {
+        size_t num_ifaces_needed = current_combo.at(type);
+        if (type == requested_type) {
+            num_ifaces_needed++;
+        }
+        size_t num_ifaces_allowed = expanded_combo.at(type);
+        if (num_ifaces_needed > num_ifaces_allowed) {
+            return false;
+        }
+    }
+    return true;
+}
+
+// This method does the following:
+// a) Enumerate all possible iface combos by expanding the current
+//    ChipIfaceCombination.
+// b) Check if the requested iface type can be added to the current mode
+//    with the iface combination that is already active.
+bool WifiChip::canCurrentModeSupportIfaceOfTypeWithCurrentIfaces(
+    IfaceType requested_type) {
+    if (!isValidModeId(current_mode_id_)) {
+        LOG(ERROR) << "Chip not configured in a mode yet";
+        return false;
+    }
+    const auto combinations = getCurrentModeIfaceCombinations();
+    for (const auto& combination : combinations) {
+        const auto expanded_combos = expandIfaceCombinations(combination);
+        for (const auto& expanded_combo : expanded_combos) {
+            if (canExpandedIfaceComboSupportIfaceOfTypeWithCurrentIfaces(
+                    expanded_combo, requested_type)) {
+                return true;
+            }
+        }
+    }
+    return false;
+}
+
+// Note: This does not consider ifaces already active. It only checks if the
+// provided expanded iface combination can support the requested combo.
+bool WifiChip::canExpandedIfaceComboSupportIfaceCombo(
+    const std::map<IfaceType, size_t>& expanded_combo,
+    const std::map<IfaceType, size_t>& req_combo) {
+    // Check if we have space for 1 more iface of |type| in this combo
+    for (const auto type :
+         {IfaceType::AP, IfaceType::NAN, IfaceType::P2P, IfaceType::STA}) {
+        if (req_combo.count(type) == 0) {
+            // Iface of "type" not in the req_combo.
+            continue;
+        }
+        size_t num_ifaces_needed = req_combo.at(type);
+        size_t num_ifaces_allowed = expanded_combo.at(type);
+        if (num_ifaces_needed > num_ifaces_allowed) {
+            return false;
+        }
+    }
+    return true;
+}
+// This method does the following:
+// a) Enumerate all possible iface combos by expanding the current
+//    ChipIfaceCombination.
+// b) Check if the requested iface combo can be added to the current mode.
+// Note: This does not consider ifaces already active. It only checks if the
+// current mode can support the requested combo.
+bool WifiChip::canCurrentModeSupportIfaceCombo(
+    const std::map<IfaceType, size_t>& req_combo) {
+    if (!isValidModeId(current_mode_id_)) {
+        LOG(ERROR) << "Chip not configured in a mode yet";
+        return false;
+    }
+    const auto combinations = getCurrentModeIfaceCombinations();
+    for (const auto& combination : combinations) {
+        const auto expanded_combos = expandIfaceCombinations(combination);
+        for (const auto& expanded_combo : expanded_combos) {
+            if (canExpandedIfaceComboSupportIfaceCombo(expanded_combo,
+                                                       req_combo)) {
+                return true;
+            }
+        }
+    }
+    return false;
+}
+
+// This method does the following:
+// a) Enumerate all possible iface combos by expanding the current
+//    ChipIfaceCombination.
+// b) Check if the requested iface type can be added to the current mode.
+bool WifiChip::canCurrentModeSupportIfaceOfType(IfaceType requested_type) {
+    // Check if we can support atleast 1 iface of type.
+    std::map<IfaceType, size_t> req_iface_combo;
+    req_iface_combo[requested_type] = 1;
+    return canCurrentModeSupportIfaceCombo(req_iface_combo);
+}
+
+bool WifiChip::isValidModeId(ChipModeId mode_id) {
+    for (const auto& mode : modes_) {
+        if (mode.id == mode_id) {
+            return true;
+        }
+    }
+    return false;
+}
+
+bool WifiChip::isStaApConcurrencyAllowedInCurrentMode() {
+    // Check if we can support atleast 1 STA & 1 AP concurrently.
+    std::map<IfaceType, size_t> req_iface_combo;
+    req_iface_combo[IfaceType::AP] = 1;
+    req_iface_combo[IfaceType::STA] = 1;
+    return canCurrentModeSupportIfaceCombo(req_iface_combo);
+}
+
+bool WifiChip::isDualApAllowedInCurrentMode() {
+    // Check if we can support atleast 1 STA & 1 AP concurrently.
+    std::map<IfaceType, size_t> req_iface_combo;
+    req_iface_combo[IfaceType::AP] = 2;
+    return canCurrentModeSupportIfaceCombo(req_iface_combo);
+}
+
+std::string WifiChip::getFirstActiveWlanIfaceName() {
+    if (sta_ifaces_.size() > 0) return sta_ifaces_[0]->getName();
+    if (ap_ifaces_.size() > 0) return ap_ifaces_[0]->getName();
+    // This could happen if the chip call is made before any STA/AP
+    // iface is created. Default to wlan0 for such cases.
+    LOG(WARNING) << "No active wlan interfaces in use! Using default";
+    return getWlanIfaceName(0);
+}
+
+// Return the first wlan (wlan0, wlan1 etc.) starting from |start_idx|
+// not already in use.
+// Note: This doesn't check the actual presence of these interfaces.
+std::string WifiChip::allocateApOrStaIfaceName(uint32_t start_idx) {
+    for (unsigned idx = start_idx; idx < kMaxWlanIfaces; idx++) {
+        const auto ifname = getWlanIfaceName(idx);
+        if (findUsingName(ap_ifaces_, ifname)) continue;
+        if (findUsingName(sta_ifaces_, ifname)) continue;
+        return ifname;
+    }
+    // This should never happen. We screwed up somewhere if it did.
+    CHECK(false) << "All wlan interfaces in use already!";
+    return {};
+}
+
+// AP iface names start with idx 1 for modes supporting
+// concurrent STA and not dual AP, else start with idx 0.
+std::string WifiChip::allocateApIfaceName() {
+    return allocateApOrStaIfaceName((isStaApConcurrencyAllowedInCurrentMode() &&
+                                     !isDualApAllowedInCurrentMode())
+                                        ? 1
+                                        : 0);
+}
+
+// STA iface names start with idx 0.
+// Primary STA iface will always be 0.
+std::string WifiChip::allocateStaIfaceName() {
+    return allocateApOrStaIfaceName(0);
+}
+
+bool WifiChip::writeRingbufferFilesInternal() {
+    if (!removeOldFilesInternal()) {
+        LOG(ERROR) << "Error occurred while deleting old tombstone files";
+        return false;
+    }
+    // write ringbuffers to file
+    for (const auto& item : ringbuffer_map_) {
+        const Ringbuffer& cur_buffer = item.second;
+        if (cur_buffer.getData().empty()) {
+            continue;
+        }
+        const std::string file_path_raw =
+            kTombstoneFolderPath + item.first + "XXXXXXXXXX";
+        const int dump_fd = mkstemp(makeCharVec(file_path_raw).data());
+        if (dump_fd == -1) {
+            PLOG(ERROR) << "create file failed";
+            return false;
+        }
+        unique_fd file_auto_closer(dump_fd);
+        for (const auto& cur_block : cur_buffer.getData()) {
+            if (write(dump_fd, cur_block.data(),
+                      sizeof(cur_block[0]) * cur_block.size()) == -1) {
+                PLOG(ERROR) << "Error writing to file";
+            }
+        }
+    }
+    return true;
+}
+
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.4/default/wifi_chip.h b/wifi/1.4/default/wifi_chip.h
new file mode 100644
index 0000000..3323ade
--- /dev/null
+++ b/wifi/1.4/default/wifi_chip.h
@@ -0,0 +1,292 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef WIFI_CHIP_H_
+#define WIFI_CHIP_H_
+
+#include <list>
+#include <map>
+
+#include <android-base/macros.h>
+#include <android/hardware/wifi/1.4/IWifiChip.h>
+#include <android/hardware/wifi/1.4/IWifiRttController.h>
+
+#include "hidl_callback_util.h"
+#include "ringbuffer.h"
+#include "wifi_ap_iface.h"
+#include "wifi_feature_flags.h"
+#include "wifi_legacy_hal.h"
+#include "wifi_mode_controller.h"
+#include "wifi_nan_iface.h"
+#include "wifi_p2p_iface.h"
+#include "wifi_rtt_controller.h"
+#include "wifi_sta_iface.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+using namespace android::hardware::wifi::V1_0;
+
+/**
+ * HIDL interface object used to control a Wifi HAL chip instance.
+ * Since there is only a single chip instance used today, there is no
+ * identifying handle information stored here.
+ */
+class WifiChip : public V1_4::IWifiChip {
+   public:
+    WifiChip(
+        ChipId chip_id,
+        const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
+        const std::weak_ptr<mode_controller::WifiModeController>
+            mode_controller,
+        const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util,
+        const std::weak_ptr<feature_flags::WifiFeatureFlags> feature_flags);
+    // HIDL does not provide a built-in mechanism to let the server invalidate
+    // a HIDL interface object after creation. If any client process holds onto
+    // a reference to the object in their context, any method calls on that
+    // reference will continue to be directed to the server.
+    //
+    // However Wifi HAL needs to control the lifetime of these objects. So, add
+    // a public |invalidate| method to |WifiChip| and it's child objects. This
+    // will be used to mark an object invalid when either:
+    // a) Wifi HAL is stopped, or
+    // b) Wifi Chip is reconfigured.
+    //
+    // All HIDL method implementations should check if the object is still
+    // marked valid before processing them.
+    void invalidate();
+    bool isValid();
+    std::set<sp<IWifiChipEventCallback>> getEventCallbacks();
+
+    // HIDL methods exposed.
+    Return<void> getId(getId_cb hidl_status_cb) override;
+    // Deprecated support for this callback
+    Return<void> registerEventCallback(
+        const sp<V1_0::IWifiChipEventCallback>& event_callback,
+        registerEventCallback_cb hidl_status_cb) override;
+    Return<void> getCapabilities(getCapabilities_cb hidl_status_cb) override;
+    Return<void> getAvailableModes(
+        getAvailableModes_cb hidl_status_cb) override;
+    Return<void> configureChip(ChipModeId mode_id,
+                               configureChip_cb hidl_status_cb) override;
+    Return<void> getMode(getMode_cb hidl_status_cb) override;
+    Return<void> requestChipDebugInfo(
+        requestChipDebugInfo_cb hidl_status_cb) override;
+    Return<void> requestDriverDebugDump(
+        requestDriverDebugDump_cb hidl_status_cb) override;
+    Return<void> requestFirmwareDebugDump(
+        requestFirmwareDebugDump_cb hidl_status_cb) override;
+    Return<void> createApIface(createApIface_cb hidl_status_cb) override;
+    Return<void> getApIfaceNames(getApIfaceNames_cb hidl_status_cb) override;
+    Return<void> getApIface(const hidl_string& ifname,
+                            getApIface_cb hidl_status_cb) override;
+    Return<void> removeApIface(const hidl_string& ifname,
+                               removeApIface_cb hidl_status_cb) override;
+    Return<void> createNanIface(createNanIface_cb hidl_status_cb) override;
+    Return<void> getNanIfaceNames(getNanIfaceNames_cb hidl_status_cb) override;
+    Return<void> getNanIface(const hidl_string& ifname,
+                             getNanIface_cb hidl_status_cb) override;
+    Return<void> removeNanIface(const hidl_string& ifname,
+                                removeNanIface_cb hidl_status_cb) override;
+    Return<void> createP2pIface(createP2pIface_cb hidl_status_cb) override;
+    Return<void> getP2pIfaceNames(getP2pIfaceNames_cb hidl_status_cb) override;
+    Return<void> getP2pIface(const hidl_string& ifname,
+                             getP2pIface_cb hidl_status_cb) override;
+    Return<void> removeP2pIface(const hidl_string& ifname,
+                                removeP2pIface_cb hidl_status_cb) override;
+    Return<void> createStaIface(createStaIface_cb hidl_status_cb) override;
+    Return<void> getStaIfaceNames(getStaIfaceNames_cb hidl_status_cb) override;
+    Return<void> getStaIface(const hidl_string& ifname,
+                             getStaIface_cb hidl_status_cb) override;
+    Return<void> removeStaIface(const hidl_string& ifname,
+                                removeStaIface_cb hidl_status_cb) override;
+    Return<void> createRttController(
+        const sp<IWifiIface>& bound_iface,
+        createRttController_cb hidl_status_cb) override;
+    Return<void> getDebugRingBuffersStatus(
+        getDebugRingBuffersStatus_cb hidl_status_cb) override;
+    Return<void> startLoggingToDebugRingBuffer(
+        const hidl_string& ring_name,
+        WifiDebugRingBufferVerboseLevel verbose_level,
+        uint32_t max_interval_in_sec, uint32_t min_data_size_in_bytes,
+        startLoggingToDebugRingBuffer_cb hidl_status_cb) override;
+    Return<void> forceDumpToDebugRingBuffer(
+        const hidl_string& ring_name,
+        forceDumpToDebugRingBuffer_cb hidl_status_cb) override;
+    Return<void> flushRingBufferToFile(
+        flushRingBufferToFile_cb hidl_status_cb) override;
+    Return<void> stopLoggingToDebugRingBuffer(
+        stopLoggingToDebugRingBuffer_cb hidl_status_cb) override;
+    Return<void> getDebugHostWakeReasonStats(
+        getDebugHostWakeReasonStats_cb hidl_status_cb) override;
+    Return<void> enableDebugErrorAlerts(
+        bool enable, enableDebugErrorAlerts_cb hidl_status_cb) override;
+    Return<void> selectTxPowerScenario(
+        V1_1::IWifiChip::TxPowerScenario scenario,
+        selectTxPowerScenario_cb hidl_status_cb) override;
+    Return<void> resetTxPowerScenario(
+        resetTxPowerScenario_cb hidl_status_cb) override;
+    Return<void> setLatencyMode(LatencyMode mode,
+                                setLatencyMode_cb hidl_status_cb) override;
+    Return<void> registerEventCallback_1_2(
+        const sp<V1_2::IWifiChipEventCallback>& event_callback,
+        registerEventCallback_1_2_cb hidl_status_cb) override;
+    Return<void> selectTxPowerScenario_1_2(
+        TxPowerScenario scenario,
+        selectTxPowerScenario_cb hidl_status_cb) override;
+    Return<void> getCapabilities_1_3(
+        getCapabilities_cb hidl_status_cb) override;
+    Return<void> debug(const hidl_handle& handle,
+                       const hidl_vec<hidl_string>& options) override;
+    Return<void> createRttController_1_4(
+        const sp<IWifiIface>& bound_iface,
+        createRttController_1_4_cb hidl_status_cb) override;
+    Return<void> registerEventCallback_1_4(
+        const sp<IWifiChipEventCallback>& event_callback,
+        registerEventCallback_1_4_cb hidl_status_cb) override;
+
+   private:
+    void invalidateAndRemoveAllIfaces();
+    // When a STA iface is removed any dependent NAN-ifaces/RTT-controllers are
+    // invalidated & removed.
+    void invalidateAndRemoveDependencies(const std::string& removed_iface_name);
+
+    // Corresponding worker functions for the HIDL methods.
+    std::pair<WifiStatus, ChipId> getIdInternal();
+    // Deprecated support for this callback
+    WifiStatus registerEventCallbackInternal(
+        const sp<V1_0::IWifiChipEventCallback>& event_callback);
+    std::pair<WifiStatus, uint32_t> getCapabilitiesInternal();
+    std::pair<WifiStatus, std::vector<ChipMode>> getAvailableModesInternal();
+    WifiStatus configureChipInternal(
+        std::unique_lock<std::recursive_mutex>* lock, ChipModeId mode_id);
+    std::pair<WifiStatus, uint32_t> getModeInternal();
+    std::pair<WifiStatus, IWifiChip::ChipDebugInfo>
+    requestChipDebugInfoInternal();
+    std::pair<WifiStatus, std::vector<uint8_t>>
+    requestDriverDebugDumpInternal();
+    std::pair<WifiStatus, std::vector<uint8_t>>
+    requestFirmwareDebugDumpInternal();
+    std::pair<WifiStatus, sp<IWifiApIface>> createApIfaceInternal();
+    std::pair<WifiStatus, std::vector<hidl_string>> getApIfaceNamesInternal();
+    std::pair<WifiStatus, sp<IWifiApIface>> getApIfaceInternal(
+        const std::string& ifname);
+    WifiStatus removeApIfaceInternal(const std::string& ifname);
+    std::pair<WifiStatus, sp<IWifiNanIface>> createNanIfaceInternal();
+    std::pair<WifiStatus, std::vector<hidl_string>> getNanIfaceNamesInternal();
+    std::pair<WifiStatus, sp<IWifiNanIface>> getNanIfaceInternal(
+        const std::string& ifname);
+    WifiStatus removeNanIfaceInternal(const std::string& ifname);
+    std::pair<WifiStatus, sp<IWifiP2pIface>> createP2pIfaceInternal();
+    std::pair<WifiStatus, std::vector<hidl_string>> getP2pIfaceNamesInternal();
+    std::pair<WifiStatus, sp<IWifiP2pIface>> getP2pIfaceInternal(
+        const std::string& ifname);
+    WifiStatus removeP2pIfaceInternal(const std::string& ifname);
+    std::pair<WifiStatus, sp<V1_3::IWifiStaIface>> createStaIfaceInternal();
+    std::pair<WifiStatus, std::vector<hidl_string>> getStaIfaceNamesInternal();
+    std::pair<WifiStatus, sp<V1_3::IWifiStaIface>> getStaIfaceInternal(
+        const std::string& ifname);
+    WifiStatus removeStaIfaceInternal(const std::string& ifname);
+    std::pair<WifiStatus, sp<V1_0::IWifiRttController>>
+    createRttControllerInternal(const sp<IWifiIface>& bound_iface);
+    std::pair<WifiStatus, std::vector<WifiDebugRingBufferStatus>>
+    getDebugRingBuffersStatusInternal();
+    WifiStatus startLoggingToDebugRingBufferInternal(
+        const hidl_string& ring_name,
+        WifiDebugRingBufferVerboseLevel verbose_level,
+        uint32_t max_interval_in_sec, uint32_t min_data_size_in_bytes);
+    WifiStatus forceDumpToDebugRingBufferInternal(const hidl_string& ring_name);
+    WifiStatus flushRingBufferToFileInternal();
+    WifiStatus stopLoggingToDebugRingBufferInternal();
+    std::pair<WifiStatus, WifiDebugHostWakeReasonStats>
+    getDebugHostWakeReasonStatsInternal();
+    WifiStatus enableDebugErrorAlertsInternal(bool enable);
+    WifiStatus selectTxPowerScenarioInternal(
+        V1_1::IWifiChip::TxPowerScenario scenario);
+    WifiStatus resetTxPowerScenarioInternal();
+    WifiStatus setLatencyModeInternal(LatencyMode mode);
+    WifiStatus registerEventCallbackInternal_1_2(
+        const sp<V1_2::IWifiChipEventCallback>& event_callback);
+    WifiStatus selectTxPowerScenarioInternal_1_2(TxPowerScenario scenario);
+    std::pair<WifiStatus, uint32_t> getCapabilitiesInternal_1_3();
+    std::pair<WifiStatus, sp<IWifiRttController>>
+    createRttControllerInternal_1_4(const sp<IWifiIface>& bound_iface);
+    WifiStatus registerEventCallbackInternal_1_4(
+        const sp<IWifiChipEventCallback>& event_callback);
+
+    WifiStatus handleChipConfiguration(
+        std::unique_lock<std::recursive_mutex>* lock, ChipModeId mode_id);
+    WifiStatus registerDebugRingBufferCallback();
+    WifiStatus registerRadioModeChangeCallback();
+
+    std::vector<IWifiChip::ChipIfaceCombination>
+    getCurrentModeIfaceCombinations();
+    std::map<IfaceType, size_t> getCurrentIfaceCombination();
+    std::vector<std::map<IfaceType, size_t>> expandIfaceCombinations(
+        const IWifiChip::ChipIfaceCombination& combination);
+    bool canExpandedIfaceComboSupportIfaceOfTypeWithCurrentIfaces(
+        const std::map<IfaceType, size_t>& expanded_combo,
+        IfaceType requested_type);
+    bool canCurrentModeSupportIfaceOfTypeWithCurrentIfaces(
+        IfaceType requested_type);
+    bool canExpandedIfaceComboSupportIfaceCombo(
+        const std::map<IfaceType, size_t>& expanded_combo,
+        const std::map<IfaceType, size_t>& req_combo);
+    bool canCurrentModeSupportIfaceCombo(
+        const std::map<IfaceType, size_t>& req_combo);
+    bool canCurrentModeSupportIfaceOfType(IfaceType requested_type);
+    bool isValidModeId(ChipModeId mode_id);
+    bool isStaApConcurrencyAllowedInCurrentMode();
+    bool isDualApAllowedInCurrentMode();
+    std::string getFirstActiveWlanIfaceName();
+    std::string allocateApOrStaIfaceName(uint32_t start_idx);
+    std::string allocateApIfaceName();
+    std::string allocateStaIfaceName();
+    bool writeRingbufferFilesInternal();
+
+    ChipId chip_id_;
+    std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
+    std::weak_ptr<mode_controller::WifiModeController> mode_controller_;
+    std::weak_ptr<iface_util::WifiIfaceUtil> iface_util_;
+    std::vector<sp<WifiApIface>> ap_ifaces_;
+    std::vector<sp<WifiNanIface>> nan_ifaces_;
+    std::vector<sp<WifiP2pIface>> p2p_ifaces_;
+    std::vector<sp<WifiStaIface>> sta_ifaces_;
+    std::vector<sp<WifiRttController>> rtt_controllers_;
+    std::map<std::string, Ringbuffer> ringbuffer_map_;
+    bool is_valid_;
+    // Members pertaining to chip configuration.
+    uint32_t current_mode_id_;
+    std::vector<IWifiChip::ChipMode> modes_;
+    // The legacy ring buffer callback API has only a global callback
+    // registration mechanism. Use this to check if we have already
+    // registered a callback.
+    bool debug_ring_buffer_cb_registered_;
+    hidl_callback_util::HidlCallbackHandler<IWifiChipEventCallback>
+        event_cb_handler_;
+
+    DISALLOW_COPY_AND_ASSIGN(WifiChip);
+};
+
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // WIFI_CHIP_H_
diff --git a/wifi/1.4/default/wifi_feature_flags.cpp b/wifi/1.4/default/wifi_feature_flags.cpp
new file mode 100644
index 0000000..195b460
--- /dev/null
+++ b/wifi/1.4/default/wifi_feature_flags.cpp
@@ -0,0 +1,166 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "wifi_feature_flags.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+namespace feature_flags {
+
+using V1_0::ChipModeId;
+using V1_0::IfaceType;
+using V1_0::IWifiChip;
+
+/* The chip may either have a single mode supporting any number of combinations,
+ * or a fixed dual-mode (so it involves firmware loading to switch between
+ * modes) setting. If there is a need to support more modes, it needs to be
+ * implemented manually in WiFi HAL (see changeFirmwareMode in
+ * WifiChip::handleChipConfiguration).
+ *
+ * Supported combinations are defined in device's makefile, for example:
+ *    WIFI_HAL_INTERFACE_COMBINATIONS := {{{STA, AP}, 1}, {{P2P, NAN}, 1}},
+ *    WIFI_HAL_INTERFACE_COMBINATIONS += {{{STA}, 1}, {{AP}, 2}}
+ * What means:
+ *    Interface combination 1: 1 STA or AP and 1 P2P or NAN concurrent iface
+ *                             operations.
+ *    Interface combination 2: 1 STA and 2 AP concurrent iface operations.
+ *
+ * For backward compatibility, the following makefile flags can be used to
+ * generate combinations list:
+ *  - WIFI_HIDL_FEATURE_DUAL_INTERFACE
+ *  - WIFI_HIDL_FEATURE_DISABLE_AP
+ *  - WIFI_HIDL_FEATURE_AWARE
+ * However, they are ignored if WIFI_HAL_INTERFACE_COMBINATIONS was provided.
+ * With WIFI_HIDL_FEATURE_DUAL_INTERFACE flag set, there is a single mode with
+ * two interface combinations:
+ *    Interface Combination 1: Will support 1 STA and 1 P2P or NAN (optional)
+ *                             concurrent iface operations.
+ *    Interface Combination 2: Will support 1 STA and 1 AP concurrent
+ *                             iface operations.
+ *
+ * The only dual-mode configuration supported is for alternating STA and AP
+ * mode, that may involve firmware reloading. In such case, there are 2 separate
+ * modes of operation with 1 interface combination each:
+ *    Mode 1 (STA mode): Will support 1 STA and 1 P2P or NAN (optional)
+ *                       concurrent iface operations.
+ *    Mode 2 (AP mode): Will support 1 AP iface operation.
+ *
+ * If Aware is enabled, the iface combination will be modified to support either
+ * P2P or NAN in place of just P2P.
+ */
+// clang-format off
+#ifdef WIFI_HAL_INTERFACE_COMBINATIONS
+constexpr ChipModeId kMainModeId = chip_mode_ids::kV3;
+#elif defined(WIFI_HIDL_FEATURE_DUAL_INTERFACE)
+// former V2 (fixed dual interface) setup expressed as V3
+constexpr ChipModeId kMainModeId = chip_mode_ids::kV3;
+#  ifdef WIFI_HIDL_FEATURE_DISABLE_AP
+#    ifdef WIFI_HIDL_FEATURE_AWARE
+//     1 STA + 1 of (P2P or NAN)
+#      define WIFI_HAL_INTERFACE_COMBINATIONS {{{STA}, 1}, {{P2P, NAN}, 1}}
+#    else
+//     1 STA + 1 P2P
+#      define WIFI_HAL_INTERFACE_COMBINATIONS {{{STA}, 1}, {{P2P}, 1}}
+#    endif
+#  else
+#    ifdef WIFI_HIDL_FEATURE_AWARE
+//     (1 STA + 1 AP) or (1 STA + 1 of (P2P or NAN))
+#      define WIFI_HAL_INTERFACE_COMBINATIONS {{{STA}, 1}, {{AP}, 1}},\
+                                              {{{STA}, 1}, {{P2P, NAN}, 1}}
+#    else
+//     (1 STA + 1 AP) or (1 STA + 1 P2P)
+#      define WIFI_HAL_INTERFACE_COMBINATIONS {{{STA}, 1}, {{AP}, 1}},\
+                                              {{{STA}, 1}, {{P2P}, 1}}
+#    endif
+#  endif
+#else
+// V1 (fixed single interface, dual-mode chip)
+constexpr ChipModeId kMainModeId = chip_mode_ids::kV1Sta;
+#  ifdef WIFI_HIDL_FEATURE_AWARE
+//   1 STA + 1 of (P2P or NAN)
+#    define WIFI_HAL_INTERFACE_COMBINATIONS {{{STA}, 1}, {{P2P, NAN}, 1}}
+#  else
+//   1 STA + 1 P2P
+#    define WIFI_HAL_INTERFACE_COMBINATIONS {{{STA}, 1}, {{P2P}, 1}}
+#  endif
+
+#  ifndef WIFI_HIDL_FEATURE_DISABLE_AP
+#    define WIFI_HAL_INTERFACE_COMBINATIONS_AP {{{AP}, 1}}
+#  endif
+#endif
+// clang-format on
+
+/**
+ * Helper class to convert a collection of combination limits to a combination.
+ *
+ * The main point here is to simplify the syntax required by
+ * WIFI_HAL_INTERFACE_COMBINATIONS.
+ */
+struct ChipIfaceCombination
+    : public hidl_vec<IWifiChip::ChipIfaceCombinationLimit> {
+    ChipIfaceCombination(
+        const std::initializer_list<IWifiChip::ChipIfaceCombinationLimit> list)
+        : hidl_vec(list) {}
+
+    operator IWifiChip::ChipIfaceCombination() const { return {*this}; }
+
+    static hidl_vec<IWifiChip::ChipIfaceCombination> make_vec(
+        const std::initializer_list<ChipIfaceCombination> list) {
+        return hidl_vec<IWifiChip::ChipIfaceCombination>(  //
+            std::begin(list), std::end(list));
+    }
+};
+
+#define STA IfaceType::STA
+#define AP IfaceType::AP
+#define P2P IfaceType::P2P
+#define NAN IfaceType::NAN
+static const std::vector<IWifiChip::ChipMode> kChipModes{
+    {kMainModeId,
+     ChipIfaceCombination::make_vec({WIFI_HAL_INTERFACE_COMBINATIONS})},
+#ifdef WIFI_HAL_INTERFACE_COMBINATIONS_AP
+    {chip_mode_ids::kV1Ap,
+     ChipIfaceCombination::make_vec({WIFI_HAL_INTERFACE_COMBINATIONS_AP})},
+#endif
+};
+#undef STA
+#undef AP
+#undef P2P
+#undef NAN
+
+#ifdef WIFI_HIDL_FEATURE_DISABLE_AP_MAC_RANDOMIZATION
+#pragma message                                                               \
+    "WIFI_HIDL_FEATURE_DISABLE_AP_MAC_RANDOMIZATION is deprecated; override " \
+    "'config_wifi_ap_randomization_supported' in "                            \
+    "frameworks/base/core/res/res/values/config.xml in the device overlay "   \
+    "instead"
+#endif  // WIFI_HIDL_FEATURE_DISABLE_AP_MAC_RANDOMIZATION
+
+WifiFeatureFlags::WifiFeatureFlags() {}
+
+std::vector<IWifiChip::ChipMode> WifiFeatureFlags::getChipModes() {
+    return kChipModes;
+}
+
+}  // namespace feature_flags
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.4/default/wifi_feature_flags.h b/wifi/1.4/default/wifi_feature_flags.h
new file mode 100644
index 0000000..292dedf
--- /dev/null
+++ b/wifi/1.4/default/wifi_feature_flags.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef WIFI_FEATURE_FLAGS_H_
+#define WIFI_FEATURE_FLAGS_H_
+
+#include <android/hardware/wifi/1.2/IWifiChip.h>
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+namespace feature_flags {
+
+namespace chip_mode_ids {
+// These mode ID's should be unique (even across combo versions). Refer to
+// handleChipConfiguration() for it's usage.
+constexpr V1_0::ChipModeId kInvalid = UINT32_MAX;
+// Mode ID's for V1
+constexpr V1_0::ChipModeId kV1Sta = 0;
+constexpr V1_0::ChipModeId kV1Ap = 1;
+// Mode ID for V3
+constexpr V1_0::ChipModeId kV3 = 3;
+}  // namespace chip_mode_ids
+
+class WifiFeatureFlags {
+   public:
+    WifiFeatureFlags();
+    virtual ~WifiFeatureFlags() = default;
+
+    virtual std::vector<V1_0::IWifiChip::ChipMode> getChipModes();
+};
+
+}  // namespace feature_flags
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // WIFI_FEATURE_FLAGS_H_
diff --git a/wifi/1.4/default/wifi_iface_util.cpp b/wifi/1.4/default/wifi_iface_util.cpp
new file mode 100644
index 0000000..2883b46
--- /dev/null
+++ b/wifi/1.4/default/wifi_iface_util.cpp
@@ -0,0 +1,118 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <cstddef>
+#include <iostream>
+#include <limits>
+#include <random>
+
+#include <android-base/logging.h>
+#include <android-base/macros.h>
+#include <private/android_filesystem_config.h>
+
+#undef NAN
+#include "wifi_iface_util.h"
+
+namespace {
+// Constants to set the local bit & clear the multicast bit.
+constexpr uint8_t kMacAddressMulticastMask = 0x01;
+constexpr uint8_t kMacAddressLocallyAssignedMask = 0x02;
+}  // namespace
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+namespace iface_util {
+
+WifiIfaceUtil::WifiIfaceUtil(
+    const std::weak_ptr<wifi_system::InterfaceTool> iface_tool)
+    : iface_tool_(iface_tool),
+      random_mac_address_(nullptr),
+      event_handlers_map_() {}
+
+std::array<uint8_t, 6> WifiIfaceUtil::getFactoryMacAddress(
+    const std::string& iface_name) {
+    return iface_tool_.lock()->GetFactoryMacAddress(iface_name.c_str());
+}
+
+bool WifiIfaceUtil::setMacAddress(const std::string& iface_name,
+                                  const std::array<uint8_t, 6>& mac) {
+    if (!iface_tool_.lock()->SetUpState(iface_name.c_str(), false)) {
+        LOG(ERROR) << "SetUpState(false) failed.";
+        return false;
+    }
+    if (!iface_tool_.lock()->SetMacAddress(iface_name.c_str(), mac)) {
+        LOG(ERROR) << "SetMacAddress failed.";
+        return false;
+    }
+    if (!iface_tool_.lock()->SetUpState(iface_name.c_str(), true)) {
+        LOG(ERROR) << "SetUpState(true) failed.";
+        return false;
+    }
+    IfaceEventHandlers event_handlers = {};
+    const auto it = event_handlers_map_.find(iface_name);
+    if (it != event_handlers_map_.end()) {
+        event_handlers = it->second;
+    }
+    if (event_handlers.on_state_toggle_off_on != nullptr) {
+        event_handlers.on_state_toggle_off_on(iface_name);
+    }
+    LOG(DEBUG) << "Successfully SetMacAddress.";
+    return true;
+}
+
+std::array<uint8_t, 6> WifiIfaceUtil::getOrCreateRandomMacAddress() {
+    if (random_mac_address_) {
+        return *random_mac_address_.get();
+    }
+    random_mac_address_ =
+        std::make_unique<std::array<uint8_t, 6>>(createRandomMacAddress());
+    return *random_mac_address_.get();
+}
+
+void WifiIfaceUtil::registerIfaceEventHandlers(const std::string& iface_name,
+                                               IfaceEventHandlers handlers) {
+    event_handlers_map_[iface_name] = handlers;
+}
+
+void WifiIfaceUtil::unregisterIfaceEventHandlers(
+    const std::string& iface_name) {
+    event_handlers_map_.erase(iface_name);
+}
+
+std::array<uint8_t, 6> WifiIfaceUtil::createRandomMacAddress() {
+    std::array<uint8_t, 6> address = {};
+    std::random_device rd;
+    std::default_random_engine engine(rd());
+    std::uniform_int_distribution<uint8_t> dist(
+        std::numeric_limits<uint8_t>::min(),
+        std::numeric_limits<uint8_t>::max());
+    for (size_t i = 0; i < address.size(); i++) {
+        address[i] = dist(engine);
+    }
+    // Set the local bit and clear the multicast bit.
+    address[0] |= kMacAddressLocallyAssignedMask;
+    address[0] &= ~kMacAddressMulticastMask;
+    return address;
+}
+}  // namespace iface_util
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.4/default/wifi_iface_util.h b/wifi/1.4/default/wifi_iface_util.h
new file mode 100644
index 0000000..35edff6
--- /dev/null
+++ b/wifi/1.4/default/wifi_iface_util.h
@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef WIFI_IFACE_UTIL_H_
+#define WIFI_IFACE_UTIL_H_
+
+#include <wifi_system/interface_tool.h>
+
+#include <android/hardware/wifi/1.0/IWifi.h>
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+namespace iface_util {
+
+// Iface event handlers.
+struct IfaceEventHandlers {
+    // Callback to be invoked when the iface is set down & up for MAC address
+    // change.
+    std::function<void(const std::string& iface_name)> on_state_toggle_off_on;
+};
+
+/**
+ * Util class for common iface operations.
+ */
+class WifiIfaceUtil {
+   public:
+    WifiIfaceUtil(const std::weak_ptr<wifi_system::InterfaceTool> iface_tool);
+    virtual ~WifiIfaceUtil() = default;
+
+    virtual std::array<uint8_t, 6> getFactoryMacAddress(
+        const std::string& iface_name);
+    virtual bool setMacAddress(const std::string& iface_name,
+                               const std::array<uint8_t, 6>& mac);
+    // Get or create a random MAC address. The MAC address returned from
+    // this method will remain the same throughout the lifetime of the HAL
+    // daemon. (So, changes on every reboot)
+    virtual std::array<uint8_t, 6> getOrCreateRandomMacAddress();
+
+    // Register for any iface event callbacks for the provided interface.
+    virtual void registerIfaceEventHandlers(const std::string& iface_name,
+                                            IfaceEventHandlers handlers);
+    virtual void unregisterIfaceEventHandlers(const std::string& iface_name);
+
+   private:
+    std::array<uint8_t, 6> createRandomMacAddress();
+
+    std::weak_ptr<wifi_system::InterfaceTool> iface_tool_;
+    std::unique_ptr<std::array<uint8_t, 6>> random_mac_address_;
+    std::map<std::string, IfaceEventHandlers> event_handlers_map_;
+};
+
+}  // namespace iface_util
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // WIFI_IFACE_UTIL_H_
diff --git a/wifi/1.4/default/wifi_legacy_hal.cpp b/wifi/1.4/default/wifi_legacy_hal.cpp
new file mode 100644
index 0000000..3ca3226
--- /dev/null
+++ b/wifi/1.4/default/wifi_legacy_hal.cpp
@@ -0,0 +1,1461 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <array>
+#include <chrono>
+
+#include <android-base/logging.h>
+#include <cutils/properties.h>
+
+#include "hidl_sync_util.h"
+#include "wifi_legacy_hal.h"
+#include "wifi_legacy_hal_stubs.h"
+
+namespace {
+// Constants ported over from the legacy HAL calling code
+// (com_android_server_wifi_WifiNative.cpp). This will all be thrown
+// away when this shim layer is replaced by the real vendor
+// implementation.
+static constexpr uint32_t kMaxVersionStringLength = 256;
+static constexpr uint32_t kMaxCachedGscanResults = 64;
+static constexpr uint32_t kMaxGscanFrequenciesForBand = 64;
+static constexpr uint32_t kLinkLayerStatsDataMpduSizeThreshold = 128;
+static constexpr uint32_t kMaxWakeReasonStatsArraySize = 32;
+static constexpr uint32_t kMaxRingBuffers = 10;
+static constexpr uint32_t kMaxStopCompleteWaitMs = 100;
+static constexpr char kDriverPropName[] = "wlan.driver.status";
+
+// Helper function to create a non-const char* for legacy Hal API's.
+std::vector<char> makeCharVec(const std::string& str) {
+    std::vector<char> vec(str.size() + 1);
+    vec.assign(str.begin(), str.end());
+    vec.push_back('\0');
+    return vec;
+}
+}  // namespace
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+namespace legacy_hal {
+// Legacy HAL functions accept "C" style function pointers, so use global
+// functions to pass to the legacy HAL function and store the corresponding
+// std::function methods to be invoked.
+//
+// Callback to be invoked once |stop| is complete
+std::function<void(wifi_handle handle)> on_stop_complete_internal_callback;
+void onAsyncStopComplete(wifi_handle handle) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_stop_complete_internal_callback) {
+        on_stop_complete_internal_callback(handle);
+        // Invalidate this callback since we don't want this firing again.
+        on_stop_complete_internal_callback = nullptr;
+    }
+}
+
+// Callback to be invoked for driver dump.
+std::function<void(char*, int)> on_driver_memory_dump_internal_callback;
+void onSyncDriverMemoryDump(char* buffer, int buffer_size) {
+    if (on_driver_memory_dump_internal_callback) {
+        on_driver_memory_dump_internal_callback(buffer, buffer_size);
+    }
+}
+
+// Callback to be invoked for firmware dump.
+std::function<void(char*, int)> on_firmware_memory_dump_internal_callback;
+void onSyncFirmwareMemoryDump(char* buffer, int buffer_size) {
+    if (on_firmware_memory_dump_internal_callback) {
+        on_firmware_memory_dump_internal_callback(buffer, buffer_size);
+    }
+}
+
+// Callback to be invoked for Gscan events.
+std::function<void(wifi_request_id, wifi_scan_event)>
+    on_gscan_event_internal_callback;
+void onAsyncGscanEvent(wifi_request_id id, wifi_scan_event event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_gscan_event_internal_callback) {
+        on_gscan_event_internal_callback(id, event);
+    }
+}
+
+// Callback to be invoked for Gscan full results.
+std::function<void(wifi_request_id, wifi_scan_result*, uint32_t)>
+    on_gscan_full_result_internal_callback;
+void onAsyncGscanFullResult(wifi_request_id id, wifi_scan_result* result,
+                            uint32_t buckets_scanned) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_gscan_full_result_internal_callback) {
+        on_gscan_full_result_internal_callback(id, result, buckets_scanned);
+    }
+}
+
+// Callback to be invoked for link layer stats results.
+std::function<void((wifi_request_id, wifi_iface_stat*, int, wifi_radio_stat*))>
+    on_link_layer_stats_result_internal_callback;
+void onSyncLinkLayerStatsResult(wifi_request_id id, wifi_iface_stat* iface_stat,
+                                int num_radios, wifi_radio_stat* radio_stat) {
+    if (on_link_layer_stats_result_internal_callback) {
+        on_link_layer_stats_result_internal_callback(id, iface_stat, num_radios,
+                                                     radio_stat);
+    }
+}
+
+// Callback to be invoked for rssi threshold breach.
+std::function<void((wifi_request_id, uint8_t*, int8_t))>
+    on_rssi_threshold_breached_internal_callback;
+void onAsyncRssiThresholdBreached(wifi_request_id id, uint8_t* bssid,
+                                  int8_t rssi) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_rssi_threshold_breached_internal_callback) {
+        on_rssi_threshold_breached_internal_callback(id, bssid, rssi);
+    }
+}
+
+// Callback to be invoked for ring buffer data indication.
+std::function<void(char*, char*, int, wifi_ring_buffer_status*)>
+    on_ring_buffer_data_internal_callback;
+void onAsyncRingBufferData(char* ring_name, char* buffer, int buffer_size,
+                           wifi_ring_buffer_status* status) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_ring_buffer_data_internal_callback) {
+        on_ring_buffer_data_internal_callback(ring_name, buffer, buffer_size,
+                                              status);
+    }
+}
+
+// Callback to be invoked for error alert indication.
+std::function<void(wifi_request_id, char*, int, int)>
+    on_error_alert_internal_callback;
+void onAsyncErrorAlert(wifi_request_id id, char* buffer, int buffer_size,
+                       int err_code) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_error_alert_internal_callback) {
+        on_error_alert_internal_callback(id, buffer, buffer_size, err_code);
+    }
+}
+
+// Callback to be invoked for radio mode change indication.
+std::function<void(wifi_request_id, uint32_t, wifi_mac_info*)>
+    on_radio_mode_change_internal_callback;
+void onAsyncRadioModeChange(wifi_request_id id, uint32_t num_macs,
+                            wifi_mac_info* mac_infos) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_radio_mode_change_internal_callback) {
+        on_radio_mode_change_internal_callback(id, num_macs, mac_infos);
+    }
+}
+
+// Callback to be invoked for rtt results results.
+std::function<void(wifi_request_id, unsigned num_results,
+                   wifi_rtt_result* rtt_results[])>
+    on_rtt_results_internal_callback;
+void onAsyncRttResults(wifi_request_id id, unsigned num_results,
+                       wifi_rtt_result* rtt_results[]) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_rtt_results_internal_callback) {
+        on_rtt_results_internal_callback(id, num_results, rtt_results);
+        on_rtt_results_internal_callback = nullptr;
+    }
+}
+
+// Callbacks for the various NAN operations.
+// NOTE: These have very little conversions to perform before invoking the user
+// callbacks.
+// So, handle all of them here directly to avoid adding an unnecessary layer.
+std::function<void(transaction_id, const NanResponseMsg&)>
+    on_nan_notify_response_user_callback;
+void onAysncNanNotifyResponse(transaction_id id, NanResponseMsg* msg) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_notify_response_user_callback && msg) {
+        on_nan_notify_response_user_callback(id, *msg);
+    }
+}
+
+std::function<void(const NanPublishRepliedInd&)>
+    on_nan_event_publish_replied_user_callback;
+void onAysncNanEventPublishReplied(NanPublishRepliedInd* /* event */) {
+    LOG(ERROR) << "onAysncNanEventPublishReplied triggered";
+}
+
+std::function<void(const NanPublishTerminatedInd&)>
+    on_nan_event_publish_terminated_user_callback;
+void onAysncNanEventPublishTerminated(NanPublishTerminatedInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_publish_terminated_user_callback && event) {
+        on_nan_event_publish_terminated_user_callback(*event);
+    }
+}
+
+std::function<void(const NanMatchInd&)> on_nan_event_match_user_callback;
+void onAysncNanEventMatch(NanMatchInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_match_user_callback && event) {
+        on_nan_event_match_user_callback(*event);
+    }
+}
+
+std::function<void(const NanMatchExpiredInd&)>
+    on_nan_event_match_expired_user_callback;
+void onAysncNanEventMatchExpired(NanMatchExpiredInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_match_expired_user_callback && event) {
+        on_nan_event_match_expired_user_callback(*event);
+    }
+}
+
+std::function<void(const NanSubscribeTerminatedInd&)>
+    on_nan_event_subscribe_terminated_user_callback;
+void onAysncNanEventSubscribeTerminated(NanSubscribeTerminatedInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_subscribe_terminated_user_callback && event) {
+        on_nan_event_subscribe_terminated_user_callback(*event);
+    }
+}
+
+std::function<void(const NanFollowupInd&)> on_nan_event_followup_user_callback;
+void onAysncNanEventFollowup(NanFollowupInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_followup_user_callback && event) {
+        on_nan_event_followup_user_callback(*event);
+    }
+}
+
+std::function<void(const NanDiscEngEventInd&)>
+    on_nan_event_disc_eng_event_user_callback;
+void onAysncNanEventDiscEngEvent(NanDiscEngEventInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_disc_eng_event_user_callback && event) {
+        on_nan_event_disc_eng_event_user_callback(*event);
+    }
+}
+
+std::function<void(const NanDisabledInd&)> on_nan_event_disabled_user_callback;
+void onAysncNanEventDisabled(NanDisabledInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_disabled_user_callback && event) {
+        on_nan_event_disabled_user_callback(*event);
+    }
+}
+
+std::function<void(const NanTCAInd&)> on_nan_event_tca_user_callback;
+void onAysncNanEventTca(NanTCAInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_tca_user_callback && event) {
+        on_nan_event_tca_user_callback(*event);
+    }
+}
+
+std::function<void(const NanBeaconSdfPayloadInd&)>
+    on_nan_event_beacon_sdf_payload_user_callback;
+void onAysncNanEventBeaconSdfPayload(NanBeaconSdfPayloadInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_beacon_sdf_payload_user_callback && event) {
+        on_nan_event_beacon_sdf_payload_user_callback(*event);
+    }
+}
+
+std::function<void(const NanDataPathRequestInd&)>
+    on_nan_event_data_path_request_user_callback;
+void onAysncNanEventDataPathRequest(NanDataPathRequestInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_data_path_request_user_callback && event) {
+        on_nan_event_data_path_request_user_callback(*event);
+    }
+}
+std::function<void(const NanDataPathConfirmInd&)>
+    on_nan_event_data_path_confirm_user_callback;
+void onAysncNanEventDataPathConfirm(NanDataPathConfirmInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_data_path_confirm_user_callback && event) {
+        on_nan_event_data_path_confirm_user_callback(*event);
+    }
+}
+
+std::function<void(const NanDataPathEndInd&)>
+    on_nan_event_data_path_end_user_callback;
+void onAysncNanEventDataPathEnd(NanDataPathEndInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_data_path_end_user_callback && event) {
+        on_nan_event_data_path_end_user_callback(*event);
+    }
+}
+
+std::function<void(const NanTransmitFollowupInd&)>
+    on_nan_event_transmit_follow_up_user_callback;
+void onAysncNanEventTransmitFollowUp(NanTransmitFollowupInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_transmit_follow_up_user_callback && event) {
+        on_nan_event_transmit_follow_up_user_callback(*event);
+    }
+}
+
+std::function<void(const NanRangeRequestInd&)>
+    on_nan_event_range_request_user_callback;
+void onAysncNanEventRangeRequest(NanRangeRequestInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_range_request_user_callback && event) {
+        on_nan_event_range_request_user_callback(*event);
+    }
+}
+
+std::function<void(const NanRangeReportInd&)>
+    on_nan_event_range_report_user_callback;
+void onAysncNanEventRangeReport(NanRangeReportInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_range_report_user_callback && event) {
+        on_nan_event_range_report_user_callback(*event);
+    }
+}
+
+std::function<void(const NanDataPathScheduleUpdateInd&)>
+    on_nan_event_schedule_update_user_callback;
+void onAsyncNanEventScheduleUpdate(NanDataPathScheduleUpdateInd* event) {
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (on_nan_event_schedule_update_user_callback && event) {
+        on_nan_event_schedule_update_user_callback(*event);
+    }
+}
+// End of the free-standing "C" style callbacks.
+
+WifiLegacyHal::WifiLegacyHal(
+    const std::weak_ptr<wifi_system::InterfaceTool> iface_tool)
+    : global_handle_(nullptr),
+      awaiting_event_loop_termination_(false),
+      is_started_(false),
+      iface_tool_(iface_tool) {}
+
+wifi_error WifiLegacyHal::initialize() {
+    LOG(DEBUG) << "Initialize legacy HAL";
+    // TODO: Add back the HAL Tool if we need to. All we need from the HAL tool
+    // for now is this function call which we can directly call.
+    if (!initHalFuncTableWithStubs(&global_func_table_)) {
+        LOG(ERROR)
+            << "Failed to initialize legacy hal function table with stubs";
+        return WIFI_ERROR_UNKNOWN;
+    }
+    wifi_error status = init_wifi_vendor_hal_func_table(&global_func_table_);
+    if (status != WIFI_SUCCESS) {
+        LOG(ERROR) << "Failed to initialize legacy hal function table";
+    }
+    return status;
+}
+
+wifi_error WifiLegacyHal::start() {
+    // Ensure that we're starting in a good state.
+    CHECK(global_func_table_.wifi_initialize && !global_handle_ &&
+          iface_name_to_handle_.empty() && !awaiting_event_loop_termination_);
+    if (is_started_) {
+        LOG(DEBUG) << "Legacy HAL already started";
+        return WIFI_SUCCESS;
+    }
+    LOG(DEBUG) << "Waiting for the driver ready";
+    wifi_error status = global_func_table_.wifi_wait_for_driver_ready();
+    if (status == WIFI_ERROR_TIMED_OUT) {
+        LOG(ERROR) << "Timed out awaiting driver ready";
+        return status;
+    }
+    property_set(kDriverPropName, "ok");
+
+    LOG(DEBUG) << "Starting legacy HAL";
+    if (!iface_tool_.lock()->SetWifiUpState(true)) {
+        LOG(ERROR) << "Failed to set WiFi interface up";
+        return WIFI_ERROR_UNKNOWN;
+    }
+    status = global_func_table_.wifi_initialize(&global_handle_);
+    if (status != WIFI_SUCCESS || !global_handle_) {
+        LOG(ERROR) << "Failed to retrieve global handle";
+        return status;
+    }
+    std::thread(&WifiLegacyHal::runEventLoop, this).detach();
+    status = retrieveIfaceHandles();
+    if (status != WIFI_SUCCESS || iface_name_to_handle_.empty()) {
+        LOG(ERROR) << "Failed to retrieve wlan interface handle";
+        return status;
+    }
+    LOG(DEBUG) << "Legacy HAL start complete";
+    is_started_ = true;
+    return WIFI_SUCCESS;
+}
+
+wifi_error WifiLegacyHal::stop(
+    /* NONNULL */ std::unique_lock<std::recursive_mutex>* lock,
+    const std::function<void()>& on_stop_complete_user_callback) {
+    if (!is_started_) {
+        LOG(DEBUG) << "Legacy HAL already stopped";
+        on_stop_complete_user_callback();
+        return WIFI_SUCCESS;
+    }
+    LOG(DEBUG) << "Stopping legacy HAL";
+    on_stop_complete_internal_callback = [on_stop_complete_user_callback,
+                                          this](wifi_handle handle) {
+        CHECK_EQ(global_handle_, handle) << "Handle mismatch";
+        LOG(INFO) << "Legacy HAL stop complete callback received";
+        // Invalidate all the internal pointers now that the HAL is
+        // stopped.
+        invalidate();
+        iface_tool_.lock()->SetWifiUpState(false);
+        on_stop_complete_user_callback();
+        is_started_ = false;
+    };
+    awaiting_event_loop_termination_ = true;
+    global_func_table_.wifi_cleanup(global_handle_, onAsyncStopComplete);
+    const auto status = stop_wait_cv_.wait_for(
+        *lock, std::chrono::milliseconds(kMaxStopCompleteWaitMs),
+        [this] { return !awaiting_event_loop_termination_; });
+    if (!status) {
+        LOG(ERROR) << "Legacy HAL stop failed or timed out";
+        return WIFI_ERROR_UNKNOWN;
+    }
+    LOG(DEBUG) << "Legacy HAL stop complete";
+    return WIFI_SUCCESS;
+}
+
+bool WifiLegacyHal::isStarted() { return is_started_; }
+
+std::pair<wifi_error, std::string> WifiLegacyHal::getDriverVersion(
+    const std::string& iface_name) {
+    std::array<char, kMaxVersionStringLength> buffer;
+    buffer.fill(0);
+    wifi_error status = global_func_table_.wifi_get_driver_version(
+        getIfaceHandle(iface_name), buffer.data(), buffer.size());
+    return {status, buffer.data()};
+}
+
+std::pair<wifi_error, std::string> WifiLegacyHal::getFirmwareVersion(
+    const std::string& iface_name) {
+    std::array<char, kMaxVersionStringLength> buffer;
+    buffer.fill(0);
+    wifi_error status = global_func_table_.wifi_get_firmware_version(
+        getIfaceHandle(iface_name), buffer.data(), buffer.size());
+    return {status, buffer.data()};
+}
+
+std::pair<wifi_error, std::vector<uint8_t>>
+WifiLegacyHal::requestDriverMemoryDump(const std::string& iface_name) {
+    std::vector<uint8_t> driver_dump;
+    on_driver_memory_dump_internal_callback = [&driver_dump](char* buffer,
+                                                             int buffer_size) {
+        driver_dump.insert(driver_dump.end(),
+                           reinterpret_cast<uint8_t*>(buffer),
+                           reinterpret_cast<uint8_t*>(buffer) + buffer_size);
+    };
+    wifi_error status = global_func_table_.wifi_get_driver_memory_dump(
+        getIfaceHandle(iface_name), {onSyncDriverMemoryDump});
+    on_driver_memory_dump_internal_callback = nullptr;
+    return {status, std::move(driver_dump)};
+}
+
+std::pair<wifi_error, std::vector<uint8_t>>
+WifiLegacyHal::requestFirmwareMemoryDump(const std::string& iface_name) {
+    std::vector<uint8_t> firmware_dump;
+    on_firmware_memory_dump_internal_callback =
+        [&firmware_dump](char* buffer, int buffer_size) {
+            firmware_dump.insert(
+                firmware_dump.end(), reinterpret_cast<uint8_t*>(buffer),
+                reinterpret_cast<uint8_t*>(buffer) + buffer_size);
+        };
+    wifi_error status = global_func_table_.wifi_get_firmware_memory_dump(
+        getIfaceHandle(iface_name), {onSyncFirmwareMemoryDump});
+    on_firmware_memory_dump_internal_callback = nullptr;
+    return {status, std::move(firmware_dump)};
+}
+
+std::pair<wifi_error, uint32_t> WifiLegacyHal::getSupportedFeatureSet(
+    const std::string& iface_name) {
+    feature_set set;
+    static_assert(sizeof(set) == sizeof(uint64_t),
+                  "Some feature_flags can not be represented in output");
+    wifi_error status = global_func_table_.wifi_get_supported_feature_set(
+        getIfaceHandle(iface_name), &set);
+    return {status, static_cast<uint32_t>(set)};
+}
+
+std::pair<wifi_error, PacketFilterCapabilities>
+WifiLegacyHal::getPacketFilterCapabilities(const std::string& iface_name) {
+    PacketFilterCapabilities caps;
+    wifi_error status = global_func_table_.wifi_get_packet_filter_capabilities(
+        getIfaceHandle(iface_name), &caps.version, &caps.max_len);
+    return {status, caps};
+}
+
+wifi_error WifiLegacyHal::setPacketFilter(const std::string& iface_name,
+                                          const std::vector<uint8_t>& program) {
+    return global_func_table_.wifi_set_packet_filter(
+        getIfaceHandle(iface_name), program.data(), program.size());
+}
+
+std::pair<wifi_error, std::vector<uint8_t>>
+WifiLegacyHal::readApfPacketFilterData(const std::string& iface_name) {
+    PacketFilterCapabilities caps;
+    wifi_error status = global_func_table_.wifi_get_packet_filter_capabilities(
+        getIfaceHandle(iface_name), &caps.version, &caps.max_len);
+    if (status != WIFI_SUCCESS) {
+        return {status, {}};
+    }
+
+    // Size the buffer to read the entire program & work memory.
+    std::vector<uint8_t> buffer(caps.max_len);
+
+    status = global_func_table_.wifi_read_packet_filter(
+        getIfaceHandle(iface_name), /*src_offset=*/0, buffer.data(),
+        buffer.size());
+    return {status, move(buffer)};
+}
+
+std::pair<wifi_error, wifi_gscan_capabilities>
+WifiLegacyHal::getGscanCapabilities(const std::string& iface_name) {
+    wifi_gscan_capabilities caps;
+    wifi_error status = global_func_table_.wifi_get_gscan_capabilities(
+        getIfaceHandle(iface_name), &caps);
+    return {status, caps};
+}
+
+wifi_error WifiLegacyHal::startGscan(
+    const std::string& iface_name, wifi_request_id id,
+    const wifi_scan_cmd_params& params,
+    const std::function<void(wifi_request_id)>& on_failure_user_callback,
+    const on_gscan_results_callback& on_results_user_callback,
+    const on_gscan_full_result_callback& on_full_result_user_callback) {
+    // If there is already an ongoing background scan, reject new scan requests.
+    if (on_gscan_event_internal_callback ||
+        on_gscan_full_result_internal_callback) {
+        return WIFI_ERROR_NOT_AVAILABLE;
+    }
+
+    // This callback will be used to either trigger |on_results_user_callback|
+    // or |on_failure_user_callback|.
+    on_gscan_event_internal_callback =
+        [iface_name, on_failure_user_callback, on_results_user_callback, this](
+            wifi_request_id id, wifi_scan_event event) {
+            switch (event) {
+                case WIFI_SCAN_RESULTS_AVAILABLE:
+                case WIFI_SCAN_THRESHOLD_NUM_SCANS:
+                case WIFI_SCAN_THRESHOLD_PERCENT: {
+                    wifi_error status;
+                    std::vector<wifi_cached_scan_results> cached_scan_results;
+                    std::tie(status, cached_scan_results) =
+                        getGscanCachedResults(iface_name);
+                    if (status == WIFI_SUCCESS) {
+                        on_results_user_callback(id, cached_scan_results);
+                        return;
+                    }
+                    FALLTHROUGH_INTENDED;
+                }
+                // Fall through if failed. Failure to retrieve cached scan
+                // results should trigger a background scan failure.
+                case WIFI_SCAN_FAILED:
+                    on_failure_user_callback(id);
+                    on_gscan_event_internal_callback = nullptr;
+                    on_gscan_full_result_internal_callback = nullptr;
+                    return;
+            }
+            LOG(FATAL) << "Unexpected gscan event received: " << event;
+        };
+
+    on_gscan_full_result_internal_callback = [on_full_result_user_callback](
+                                                 wifi_request_id id,
+                                                 wifi_scan_result* result,
+                                                 uint32_t buckets_scanned) {
+        if (result) {
+            on_full_result_user_callback(id, result, buckets_scanned);
+        }
+    };
+
+    wifi_scan_result_handler handler = {onAsyncGscanFullResult,
+                                        onAsyncGscanEvent};
+    wifi_error status = global_func_table_.wifi_start_gscan(
+        id, getIfaceHandle(iface_name), params, handler);
+    if (status != WIFI_SUCCESS) {
+        on_gscan_event_internal_callback = nullptr;
+        on_gscan_full_result_internal_callback = nullptr;
+    }
+    return status;
+}
+
+wifi_error WifiLegacyHal::stopGscan(const std::string& iface_name,
+                                    wifi_request_id id) {
+    // If there is no an ongoing background scan, reject stop requests.
+    // TODO(b/32337212): This needs to be handled by the HIDL object because we
+    // need to return the NOT_STARTED error code.
+    if (!on_gscan_event_internal_callback &&
+        !on_gscan_full_result_internal_callback) {
+        return WIFI_ERROR_NOT_AVAILABLE;
+    }
+    wifi_error status =
+        global_func_table_.wifi_stop_gscan(id, getIfaceHandle(iface_name));
+    // If the request Id is wrong, don't stop the ongoing background scan. Any
+    // other error should be treated as the end of background scan.
+    if (status != WIFI_ERROR_INVALID_REQUEST_ID) {
+        on_gscan_event_internal_callback = nullptr;
+        on_gscan_full_result_internal_callback = nullptr;
+    }
+    return status;
+}
+
+std::pair<wifi_error, std::vector<uint32_t>>
+WifiLegacyHal::getValidFrequenciesForBand(const std::string& iface_name,
+                                          wifi_band band) {
+    static_assert(sizeof(uint32_t) >= sizeof(wifi_channel),
+                  "Wifi Channel cannot be represented in output");
+    std::vector<uint32_t> freqs;
+    freqs.resize(kMaxGscanFrequenciesForBand);
+    int32_t num_freqs = 0;
+    wifi_error status = global_func_table_.wifi_get_valid_channels(
+        getIfaceHandle(iface_name), band, freqs.size(),
+        reinterpret_cast<wifi_channel*>(freqs.data()), &num_freqs);
+    CHECK(num_freqs >= 0 &&
+          static_cast<uint32_t>(num_freqs) <= kMaxGscanFrequenciesForBand);
+    freqs.resize(num_freqs);
+    return {status, std::move(freqs)};
+}
+
+wifi_error WifiLegacyHal::setDfsFlag(const std::string& iface_name,
+                                     bool dfs_on) {
+    return global_func_table_.wifi_set_nodfs_flag(getIfaceHandle(iface_name),
+                                                  dfs_on ? 0 : 1);
+}
+
+wifi_error WifiLegacyHal::enableLinkLayerStats(const std::string& iface_name,
+                                               bool debug) {
+    wifi_link_layer_params params;
+    params.mpdu_size_threshold = kLinkLayerStatsDataMpduSizeThreshold;
+    params.aggressive_statistics_gathering = debug;
+    return global_func_table_.wifi_set_link_stats(getIfaceHandle(iface_name),
+                                                  params);
+}
+
+wifi_error WifiLegacyHal::disableLinkLayerStats(const std::string& iface_name) {
+    // TODO: Do we care about these responses?
+    uint32_t clear_mask_rsp;
+    uint8_t stop_rsp;
+    return global_func_table_.wifi_clear_link_stats(
+        getIfaceHandle(iface_name), 0xFFFFFFFF, &clear_mask_rsp, 1, &stop_rsp);
+}
+
+std::pair<wifi_error, LinkLayerStats> WifiLegacyHal::getLinkLayerStats(
+    const std::string& iface_name) {
+    LinkLayerStats link_stats{};
+    LinkLayerStats* link_stats_ptr = &link_stats;
+
+    on_link_layer_stats_result_internal_callback =
+        [&link_stats_ptr](wifi_request_id /* id */,
+                          wifi_iface_stat* iface_stats_ptr, int num_radios,
+                          wifi_radio_stat* radio_stats_ptr) {
+            wifi_radio_stat* l_radio_stats_ptr;
+
+            if (iface_stats_ptr != nullptr) {
+                link_stats_ptr->iface = *iface_stats_ptr;
+                link_stats_ptr->iface.num_peers = 0;
+            } else {
+                LOG(ERROR) << "Invalid iface stats in link layer stats";
+            }
+            if (num_radios <= 0 || radio_stats_ptr == nullptr) {
+                LOG(ERROR) << "Invalid radio stats in link layer stats";
+                return;
+            }
+            l_radio_stats_ptr = radio_stats_ptr;
+            for (int i = 0; i < num_radios; i++) {
+                LinkLayerRadioStats radio;
+
+                radio.stats = *l_radio_stats_ptr;
+                // Copy over the tx level array to the separate vector.
+                if (l_radio_stats_ptr->num_tx_levels > 0 &&
+                    l_radio_stats_ptr->tx_time_per_levels != nullptr) {
+                    radio.tx_time_per_levels.assign(
+                        l_radio_stats_ptr->tx_time_per_levels,
+                        l_radio_stats_ptr->tx_time_per_levels +
+                            l_radio_stats_ptr->num_tx_levels);
+                }
+                radio.stats.num_tx_levels = 0;
+                radio.stats.tx_time_per_levels = nullptr;
+                /* Copy over the channel stat to separate vector */
+                if (l_radio_stats_ptr->num_channels > 0) {
+                    /* Copy the channel stats */
+                    radio.channel_stats.assign(
+                        l_radio_stats_ptr->channels,
+                        l_radio_stats_ptr->channels +
+                            l_radio_stats_ptr->num_channels);
+                }
+                link_stats_ptr->radios.push_back(radio);
+                l_radio_stats_ptr =
+                    (wifi_radio_stat*)((u8*)l_radio_stats_ptr +
+                                       sizeof(wifi_radio_stat) +
+                                       (sizeof(wifi_channel_stat) *
+                                        l_radio_stats_ptr->num_channels));
+            }
+        };
+
+    wifi_error status = global_func_table_.wifi_get_link_stats(
+        0, getIfaceHandle(iface_name), {onSyncLinkLayerStatsResult});
+    on_link_layer_stats_result_internal_callback = nullptr;
+    return {status, link_stats};
+}
+
+wifi_error WifiLegacyHal::startRssiMonitoring(
+    const std::string& iface_name, wifi_request_id id, int8_t max_rssi,
+    int8_t min_rssi,
+    const on_rssi_threshold_breached_callback&
+        on_threshold_breached_user_callback) {
+    if (on_rssi_threshold_breached_internal_callback) {
+        return WIFI_ERROR_NOT_AVAILABLE;
+    }
+    on_rssi_threshold_breached_internal_callback =
+        [on_threshold_breached_user_callback](wifi_request_id id,
+                                              uint8_t* bssid_ptr, int8_t rssi) {
+            if (!bssid_ptr) {
+                return;
+            }
+            std::array<uint8_t, 6> bssid_arr;
+            // |bssid_ptr| pointer is assumed to have 6 bytes for the mac
+            // address.
+            std::copy(bssid_ptr, bssid_ptr + 6, std::begin(bssid_arr));
+            on_threshold_breached_user_callback(id, bssid_arr, rssi);
+        };
+    wifi_error status = global_func_table_.wifi_start_rssi_monitoring(
+        id, getIfaceHandle(iface_name), max_rssi, min_rssi,
+        {onAsyncRssiThresholdBreached});
+    if (status != WIFI_SUCCESS) {
+        on_rssi_threshold_breached_internal_callback = nullptr;
+    }
+    return status;
+}
+
+wifi_error WifiLegacyHal::stopRssiMonitoring(const std::string& iface_name,
+                                             wifi_request_id id) {
+    if (!on_rssi_threshold_breached_internal_callback) {
+        return WIFI_ERROR_NOT_AVAILABLE;
+    }
+    wifi_error status = global_func_table_.wifi_stop_rssi_monitoring(
+        id, getIfaceHandle(iface_name));
+    // If the request Id is wrong, don't stop the ongoing rssi monitoring. Any
+    // other error should be treated as the end of background scan.
+    if (status != WIFI_ERROR_INVALID_REQUEST_ID) {
+        on_rssi_threshold_breached_internal_callback = nullptr;
+    }
+    return status;
+}
+
+std::pair<wifi_error, wifi_roaming_capabilities>
+WifiLegacyHal::getRoamingCapabilities(const std::string& iface_name) {
+    wifi_roaming_capabilities caps;
+    wifi_error status = global_func_table_.wifi_get_roaming_capabilities(
+        getIfaceHandle(iface_name), &caps);
+    return {status, caps};
+}
+
+wifi_error WifiLegacyHal::configureRoaming(const std::string& iface_name,
+                                           const wifi_roaming_config& config) {
+    wifi_roaming_config config_internal = config;
+    return global_func_table_.wifi_configure_roaming(getIfaceHandle(iface_name),
+                                                     &config_internal);
+}
+
+wifi_error WifiLegacyHal::enableFirmwareRoaming(const std::string& iface_name,
+                                                fw_roaming_state_t state) {
+    return global_func_table_.wifi_enable_firmware_roaming(
+        getIfaceHandle(iface_name), state);
+}
+
+wifi_error WifiLegacyHal::configureNdOffload(const std::string& iface_name,
+                                             bool enable) {
+    return global_func_table_.wifi_configure_nd_offload(
+        getIfaceHandle(iface_name), enable);
+}
+
+wifi_error WifiLegacyHal::startSendingOffloadedPacket(
+    const std::string& iface_name, uint32_t cmd_id, uint16_t ether_type,
+    const std::vector<uint8_t>& ip_packet_data,
+    const std::array<uint8_t, 6>& src_address,
+    const std::array<uint8_t, 6>& dst_address, uint32_t period_in_ms) {
+    std::vector<uint8_t> ip_packet_data_internal(ip_packet_data);
+    std::vector<uint8_t> src_address_internal(
+        src_address.data(), src_address.data() + src_address.size());
+    std::vector<uint8_t> dst_address_internal(
+        dst_address.data(), dst_address.data() + dst_address.size());
+    return global_func_table_.wifi_start_sending_offloaded_packet(
+        cmd_id, getIfaceHandle(iface_name), ether_type,
+        ip_packet_data_internal.data(), ip_packet_data_internal.size(),
+        src_address_internal.data(), dst_address_internal.data(), period_in_ms);
+}
+
+wifi_error WifiLegacyHal::stopSendingOffloadedPacket(
+    const std::string& iface_name, uint32_t cmd_id) {
+    return global_func_table_.wifi_stop_sending_offloaded_packet(
+        cmd_id, getIfaceHandle(iface_name));
+}
+
+wifi_error WifiLegacyHal::setScanningMacOui(const std::string& iface_name,
+                                            const std::array<uint8_t, 3>& oui) {
+    std::vector<uint8_t> oui_internal(oui.data(), oui.data() + oui.size());
+    return global_func_table_.wifi_set_scanning_mac_oui(
+        getIfaceHandle(iface_name), oui_internal.data());
+}
+
+wifi_error WifiLegacyHal::selectTxPowerScenario(const std::string& iface_name,
+                                                wifi_power_scenario scenario) {
+    return global_func_table_.wifi_select_tx_power_scenario(
+        getIfaceHandle(iface_name), scenario);
+}
+
+wifi_error WifiLegacyHal::resetTxPowerScenario(const std::string& iface_name) {
+    return global_func_table_.wifi_reset_tx_power_scenario(
+        getIfaceHandle(iface_name));
+}
+
+wifi_error WifiLegacyHal::setLatencyMode(const std::string& iface_name,
+                                         wifi_latency_mode mode) {
+    return global_func_table_.wifi_set_latency_mode(getIfaceHandle(iface_name),
+                                                    mode);
+}
+
+wifi_error WifiLegacyHal::setThermalMitigationMode(wifi_thermal_mode mode,
+                                                   uint32_t completion_window) {
+    return global_func_table_.wifi_set_thermal_mitigation_mode(
+        global_handle_, mode, completion_window);
+}
+
+std::pair<wifi_error, uint32_t> WifiLegacyHal::getLoggerSupportedFeatureSet(
+    const std::string& iface_name) {
+    uint32_t supported_feature_flags;
+    wifi_error status =
+        global_func_table_.wifi_get_logger_supported_feature_set(
+            getIfaceHandle(iface_name), &supported_feature_flags);
+    return {status, supported_feature_flags};
+}
+
+wifi_error WifiLegacyHal::startPktFateMonitoring(
+    const std::string& iface_name) {
+    return global_func_table_.wifi_start_pkt_fate_monitoring(
+        getIfaceHandle(iface_name));
+}
+
+std::pair<wifi_error, std::vector<wifi_tx_report>> WifiLegacyHal::getTxPktFates(
+    const std::string& iface_name) {
+    std::vector<wifi_tx_report> tx_pkt_fates;
+    tx_pkt_fates.resize(MAX_FATE_LOG_LEN);
+    size_t num_fates = 0;
+    wifi_error status = global_func_table_.wifi_get_tx_pkt_fates(
+        getIfaceHandle(iface_name), tx_pkt_fates.data(), tx_pkt_fates.size(),
+        &num_fates);
+    CHECK(num_fates <= MAX_FATE_LOG_LEN);
+    tx_pkt_fates.resize(num_fates);
+    return {status, std::move(tx_pkt_fates)};
+}
+
+std::pair<wifi_error, std::vector<wifi_rx_report>> WifiLegacyHal::getRxPktFates(
+    const std::string& iface_name) {
+    std::vector<wifi_rx_report> rx_pkt_fates;
+    rx_pkt_fates.resize(MAX_FATE_LOG_LEN);
+    size_t num_fates = 0;
+    wifi_error status = global_func_table_.wifi_get_rx_pkt_fates(
+        getIfaceHandle(iface_name), rx_pkt_fates.data(), rx_pkt_fates.size(),
+        &num_fates);
+    CHECK(num_fates <= MAX_FATE_LOG_LEN);
+    rx_pkt_fates.resize(num_fates);
+    return {status, std::move(rx_pkt_fates)};
+}
+
+std::pair<wifi_error, WakeReasonStats> WifiLegacyHal::getWakeReasonStats(
+    const std::string& iface_name) {
+    WakeReasonStats stats;
+    stats.cmd_event_wake_cnt.resize(kMaxWakeReasonStatsArraySize);
+    stats.driver_fw_local_wake_cnt.resize(kMaxWakeReasonStatsArraySize);
+
+    // This legacy struct needs separate memory to store the variable sized wake
+    // reason types.
+    stats.wake_reason_cnt.cmd_event_wake_cnt =
+        reinterpret_cast<int32_t*>(stats.cmd_event_wake_cnt.data());
+    stats.wake_reason_cnt.cmd_event_wake_cnt_sz =
+        stats.cmd_event_wake_cnt.size();
+    stats.wake_reason_cnt.cmd_event_wake_cnt_used = 0;
+    stats.wake_reason_cnt.driver_fw_local_wake_cnt =
+        reinterpret_cast<int32_t*>(stats.driver_fw_local_wake_cnt.data());
+    stats.wake_reason_cnt.driver_fw_local_wake_cnt_sz =
+        stats.driver_fw_local_wake_cnt.size();
+    stats.wake_reason_cnt.driver_fw_local_wake_cnt_used = 0;
+
+    wifi_error status = global_func_table_.wifi_get_wake_reason_stats(
+        getIfaceHandle(iface_name), &stats.wake_reason_cnt);
+
+    CHECK(
+        stats.wake_reason_cnt.cmd_event_wake_cnt_used >= 0 &&
+        static_cast<uint32_t>(stats.wake_reason_cnt.cmd_event_wake_cnt_used) <=
+            kMaxWakeReasonStatsArraySize);
+    stats.cmd_event_wake_cnt.resize(
+        stats.wake_reason_cnt.cmd_event_wake_cnt_used);
+    stats.wake_reason_cnt.cmd_event_wake_cnt = nullptr;
+
+    CHECK(stats.wake_reason_cnt.driver_fw_local_wake_cnt_used >= 0 &&
+          static_cast<uint32_t>(
+              stats.wake_reason_cnt.driver_fw_local_wake_cnt_used) <=
+              kMaxWakeReasonStatsArraySize);
+    stats.driver_fw_local_wake_cnt.resize(
+        stats.wake_reason_cnt.driver_fw_local_wake_cnt_used);
+    stats.wake_reason_cnt.driver_fw_local_wake_cnt = nullptr;
+
+    return {status, stats};
+}
+
+wifi_error WifiLegacyHal::registerRingBufferCallbackHandler(
+    const std::string& iface_name,
+    const on_ring_buffer_data_callback& on_user_data_callback) {
+    if (on_ring_buffer_data_internal_callback) {
+        return WIFI_ERROR_NOT_AVAILABLE;
+    }
+    on_ring_buffer_data_internal_callback =
+        [on_user_data_callback](char* ring_name, char* buffer, int buffer_size,
+                                wifi_ring_buffer_status* status) {
+            if (status && buffer) {
+                std::vector<uint8_t> buffer_vector(
+                    reinterpret_cast<uint8_t*>(buffer),
+                    reinterpret_cast<uint8_t*>(buffer) + buffer_size);
+                on_user_data_callback(ring_name, buffer_vector, *status);
+            }
+        };
+    wifi_error status = global_func_table_.wifi_set_log_handler(
+        0, getIfaceHandle(iface_name), {onAsyncRingBufferData});
+    if (status != WIFI_SUCCESS) {
+        on_ring_buffer_data_internal_callback = nullptr;
+    }
+    return status;
+}
+
+wifi_error WifiLegacyHal::deregisterRingBufferCallbackHandler(
+    const std::string& iface_name) {
+    if (!on_ring_buffer_data_internal_callback) {
+        return WIFI_ERROR_NOT_AVAILABLE;
+    }
+    on_ring_buffer_data_internal_callback = nullptr;
+    return global_func_table_.wifi_reset_log_handler(
+        0, getIfaceHandle(iface_name));
+}
+
+std::pair<wifi_error, std::vector<wifi_ring_buffer_status>>
+WifiLegacyHal::getRingBuffersStatus(const std::string& iface_name) {
+    std::vector<wifi_ring_buffer_status> ring_buffers_status;
+    ring_buffers_status.resize(kMaxRingBuffers);
+    uint32_t num_rings = kMaxRingBuffers;
+    wifi_error status = global_func_table_.wifi_get_ring_buffers_status(
+        getIfaceHandle(iface_name), &num_rings, ring_buffers_status.data());
+    CHECK(num_rings <= kMaxRingBuffers);
+    ring_buffers_status.resize(num_rings);
+    return {status, std::move(ring_buffers_status)};
+}
+
+wifi_error WifiLegacyHal::startRingBufferLogging(const std::string& iface_name,
+                                                 const std::string& ring_name,
+                                                 uint32_t verbose_level,
+                                                 uint32_t max_interval_sec,
+                                                 uint32_t min_data_size) {
+    return global_func_table_.wifi_start_logging(
+        getIfaceHandle(iface_name), verbose_level, 0, max_interval_sec,
+        min_data_size, makeCharVec(ring_name).data());
+}
+
+wifi_error WifiLegacyHal::getRingBufferData(const std::string& iface_name,
+                                            const std::string& ring_name) {
+    return global_func_table_.wifi_get_ring_data(getIfaceHandle(iface_name),
+                                                 makeCharVec(ring_name).data());
+}
+
+wifi_error WifiLegacyHal::registerErrorAlertCallbackHandler(
+    const std::string& iface_name,
+    const on_error_alert_callback& on_user_alert_callback) {
+    if (on_error_alert_internal_callback) {
+        return WIFI_ERROR_NOT_AVAILABLE;
+    }
+    on_error_alert_internal_callback = [on_user_alert_callback](
+                                           wifi_request_id id, char* buffer,
+                                           int buffer_size, int err_code) {
+        if (buffer) {
+            CHECK(id == 0);
+            on_user_alert_callback(
+                err_code,
+                std::vector<uint8_t>(
+                    reinterpret_cast<uint8_t*>(buffer),
+                    reinterpret_cast<uint8_t*>(buffer) + buffer_size));
+        }
+    };
+    wifi_error status = global_func_table_.wifi_set_alert_handler(
+        0, getIfaceHandle(iface_name), {onAsyncErrorAlert});
+    if (status != WIFI_SUCCESS) {
+        on_error_alert_internal_callback = nullptr;
+    }
+    return status;
+}
+
+wifi_error WifiLegacyHal::deregisterErrorAlertCallbackHandler(
+    const std::string& iface_name) {
+    if (!on_error_alert_internal_callback) {
+        return WIFI_ERROR_NOT_AVAILABLE;
+    }
+    on_error_alert_internal_callback = nullptr;
+    return global_func_table_.wifi_reset_alert_handler(
+        0, getIfaceHandle(iface_name));
+}
+
+wifi_error WifiLegacyHal::registerRadioModeChangeCallbackHandler(
+    const std::string& iface_name,
+    const on_radio_mode_change_callback& on_user_change_callback) {
+    if (on_radio_mode_change_internal_callback) {
+        return WIFI_ERROR_NOT_AVAILABLE;
+    }
+    on_radio_mode_change_internal_callback = [on_user_change_callback](
+                                                 wifi_request_id /* id */,
+                                                 uint32_t num_macs,
+                                                 wifi_mac_info* mac_infos_arr) {
+        if (num_macs > 0 && mac_infos_arr) {
+            std::vector<WifiMacInfo> mac_infos_vec;
+            for (uint32_t i = 0; i < num_macs; i++) {
+                WifiMacInfo mac_info;
+                mac_info.wlan_mac_id = mac_infos_arr[i].wlan_mac_id;
+                mac_info.mac_band = mac_infos_arr[i].mac_band;
+                for (int32_t j = 0; j < mac_infos_arr[i].num_iface; j++) {
+                    WifiIfaceInfo iface_info;
+                    iface_info.name = mac_infos_arr[i].iface_info[j].iface_name;
+                    iface_info.channel = mac_infos_arr[i].iface_info[j].channel;
+                    mac_info.iface_infos.push_back(iface_info);
+                }
+                mac_infos_vec.push_back(mac_info);
+            }
+            on_user_change_callback(mac_infos_vec);
+        }
+    };
+    wifi_error status = global_func_table_.wifi_set_radio_mode_change_handler(
+        0, getIfaceHandle(iface_name), {onAsyncRadioModeChange});
+    if (status != WIFI_SUCCESS) {
+        on_radio_mode_change_internal_callback = nullptr;
+    }
+    return status;
+}
+
+wifi_error WifiLegacyHal::startRttRangeRequest(
+    const std::string& iface_name, wifi_request_id id,
+    const std::vector<wifi_rtt_config>& rtt_configs,
+    const on_rtt_results_callback& on_results_user_callback) {
+    if (on_rtt_results_internal_callback) {
+        return WIFI_ERROR_NOT_AVAILABLE;
+    }
+
+    on_rtt_results_internal_callback =
+        [on_results_user_callback](wifi_request_id id, unsigned num_results,
+                                   wifi_rtt_result* rtt_results[]) {
+            if (num_results > 0 && !rtt_results) {
+                LOG(ERROR) << "Unexpected nullptr in RTT results";
+                return;
+            }
+            std::vector<const wifi_rtt_result*> rtt_results_vec;
+            std::copy_if(rtt_results, rtt_results + num_results,
+                         back_inserter(rtt_results_vec),
+                         [](wifi_rtt_result* rtt_result) {
+                             return rtt_result != nullptr;
+                         });
+            on_results_user_callback(id, rtt_results_vec);
+        };
+
+    std::vector<wifi_rtt_config> rtt_configs_internal(rtt_configs);
+    wifi_error status = global_func_table_.wifi_rtt_range_request(
+        id, getIfaceHandle(iface_name), rtt_configs.size(),
+        rtt_configs_internal.data(), {onAsyncRttResults});
+    if (status != WIFI_SUCCESS) {
+        on_rtt_results_internal_callback = nullptr;
+    }
+    return status;
+}
+
+wifi_error WifiLegacyHal::cancelRttRangeRequest(
+    const std::string& iface_name, wifi_request_id id,
+    const std::vector<std::array<uint8_t, 6>>& mac_addrs) {
+    if (!on_rtt_results_internal_callback) {
+        return WIFI_ERROR_NOT_AVAILABLE;
+    }
+    static_assert(sizeof(mac_addr) == sizeof(std::array<uint8_t, 6>),
+                  "MAC address size mismatch");
+    // TODO: How do we handle partial cancels (i.e only a subset of enabled mac
+    // addressed are cancelled).
+    std::vector<std::array<uint8_t, 6>> mac_addrs_internal(mac_addrs);
+    wifi_error status = global_func_table_.wifi_rtt_range_cancel(
+        id, getIfaceHandle(iface_name), mac_addrs.size(),
+        reinterpret_cast<mac_addr*>(mac_addrs_internal.data()));
+    // If the request Id is wrong, don't stop the ongoing range request. Any
+    // other error should be treated as the end of rtt ranging.
+    if (status != WIFI_ERROR_INVALID_REQUEST_ID) {
+        on_rtt_results_internal_callback = nullptr;
+    }
+    return status;
+}
+
+std::pair<wifi_error, wifi_rtt_capabilities> WifiLegacyHal::getRttCapabilities(
+    const std::string& iface_name) {
+    wifi_rtt_capabilities rtt_caps;
+    wifi_error status = global_func_table_.wifi_get_rtt_capabilities(
+        getIfaceHandle(iface_name), &rtt_caps);
+    return {status, rtt_caps};
+}
+
+std::pair<wifi_error, wifi_rtt_responder> WifiLegacyHal::getRttResponderInfo(
+    const std::string& iface_name) {
+    wifi_rtt_responder rtt_responder;
+    wifi_error status = global_func_table_.wifi_rtt_get_responder_info(
+        getIfaceHandle(iface_name), &rtt_responder);
+    return {status, rtt_responder};
+}
+
+wifi_error WifiLegacyHal::enableRttResponder(
+    const std::string& iface_name, wifi_request_id id,
+    const wifi_channel_info& channel_hint, uint32_t max_duration_secs,
+    const wifi_rtt_responder& info) {
+    wifi_rtt_responder info_internal(info);
+    return global_func_table_.wifi_enable_responder(
+        id, getIfaceHandle(iface_name), channel_hint, max_duration_secs,
+        &info_internal);
+}
+
+wifi_error WifiLegacyHal::disableRttResponder(const std::string& iface_name,
+                                              wifi_request_id id) {
+    return global_func_table_.wifi_disable_responder(
+        id, getIfaceHandle(iface_name));
+}
+
+wifi_error WifiLegacyHal::setRttLci(const std::string& iface_name,
+                                    wifi_request_id id,
+                                    const wifi_lci_information& info) {
+    wifi_lci_information info_internal(info);
+    return global_func_table_.wifi_set_lci(id, getIfaceHandle(iface_name),
+                                           &info_internal);
+}
+
+wifi_error WifiLegacyHal::setRttLcr(const std::string& iface_name,
+                                    wifi_request_id id,
+                                    const wifi_lcr_information& info) {
+    wifi_lcr_information info_internal(info);
+    return global_func_table_.wifi_set_lcr(id, getIfaceHandle(iface_name),
+                                           &info_internal);
+}
+
+wifi_error WifiLegacyHal::nanRegisterCallbackHandlers(
+    const std::string& iface_name, const NanCallbackHandlers& user_callbacks) {
+    on_nan_notify_response_user_callback = user_callbacks.on_notify_response;
+    on_nan_event_publish_terminated_user_callback =
+        user_callbacks.on_event_publish_terminated;
+    on_nan_event_match_user_callback = user_callbacks.on_event_match;
+    on_nan_event_match_expired_user_callback =
+        user_callbacks.on_event_match_expired;
+    on_nan_event_subscribe_terminated_user_callback =
+        user_callbacks.on_event_subscribe_terminated;
+    on_nan_event_followup_user_callback = user_callbacks.on_event_followup;
+    on_nan_event_disc_eng_event_user_callback =
+        user_callbacks.on_event_disc_eng_event;
+    on_nan_event_disabled_user_callback = user_callbacks.on_event_disabled;
+    on_nan_event_tca_user_callback = user_callbacks.on_event_tca;
+    on_nan_event_beacon_sdf_payload_user_callback =
+        user_callbacks.on_event_beacon_sdf_payload;
+    on_nan_event_data_path_request_user_callback =
+        user_callbacks.on_event_data_path_request;
+    on_nan_event_data_path_confirm_user_callback =
+        user_callbacks.on_event_data_path_confirm;
+    on_nan_event_data_path_end_user_callback =
+        user_callbacks.on_event_data_path_end;
+    on_nan_event_transmit_follow_up_user_callback =
+        user_callbacks.on_event_transmit_follow_up;
+    on_nan_event_range_request_user_callback =
+        user_callbacks.on_event_range_request;
+    on_nan_event_range_report_user_callback =
+        user_callbacks.on_event_range_report;
+    on_nan_event_schedule_update_user_callback =
+        user_callbacks.on_event_schedule_update;
+
+    return global_func_table_.wifi_nan_register_handler(
+        getIfaceHandle(iface_name),
+        {onAysncNanNotifyResponse, onAysncNanEventPublishReplied,
+         onAysncNanEventPublishTerminated, onAysncNanEventMatch,
+         onAysncNanEventMatchExpired, onAysncNanEventSubscribeTerminated,
+         onAysncNanEventFollowup, onAysncNanEventDiscEngEvent,
+         onAysncNanEventDisabled, onAysncNanEventTca,
+         onAysncNanEventBeaconSdfPayload, onAysncNanEventDataPathRequest,
+         onAysncNanEventDataPathConfirm, onAysncNanEventDataPathEnd,
+         onAysncNanEventTransmitFollowUp, onAysncNanEventRangeRequest,
+         onAysncNanEventRangeReport, onAsyncNanEventScheduleUpdate});
+}
+
+wifi_error WifiLegacyHal::nanEnableRequest(const std::string& iface_name,
+                                           transaction_id id,
+                                           const NanEnableRequest& msg) {
+    NanEnableRequest msg_internal(msg);
+    return global_func_table_.wifi_nan_enable_request(
+        id, getIfaceHandle(iface_name), &msg_internal);
+}
+
+wifi_error WifiLegacyHal::nanDisableRequest(const std::string& iface_name,
+                                            transaction_id id) {
+    return global_func_table_.wifi_nan_disable_request(
+        id, getIfaceHandle(iface_name));
+}
+
+wifi_error WifiLegacyHal::nanPublishRequest(const std::string& iface_name,
+                                            transaction_id id,
+                                            const NanPublishRequest& msg) {
+    NanPublishRequest msg_internal(msg);
+    return global_func_table_.wifi_nan_publish_request(
+        id, getIfaceHandle(iface_name), &msg_internal);
+}
+
+wifi_error WifiLegacyHal::nanPublishCancelRequest(
+    const std::string& iface_name, transaction_id id,
+    const NanPublishCancelRequest& msg) {
+    NanPublishCancelRequest msg_internal(msg);
+    return global_func_table_.wifi_nan_publish_cancel_request(
+        id, getIfaceHandle(iface_name), &msg_internal);
+}
+
+wifi_error WifiLegacyHal::nanSubscribeRequest(const std::string& iface_name,
+                                              transaction_id id,
+                                              const NanSubscribeRequest& msg) {
+    NanSubscribeRequest msg_internal(msg);
+    return global_func_table_.wifi_nan_subscribe_request(
+        id, getIfaceHandle(iface_name), &msg_internal);
+}
+
+wifi_error WifiLegacyHal::nanSubscribeCancelRequest(
+    const std::string& iface_name, transaction_id id,
+    const NanSubscribeCancelRequest& msg) {
+    NanSubscribeCancelRequest msg_internal(msg);
+    return global_func_table_.wifi_nan_subscribe_cancel_request(
+        id, getIfaceHandle(iface_name), &msg_internal);
+}
+
+wifi_error WifiLegacyHal::nanTransmitFollowupRequest(
+    const std::string& iface_name, transaction_id id,
+    const NanTransmitFollowupRequest& msg) {
+    NanTransmitFollowupRequest msg_internal(msg);
+    return global_func_table_.wifi_nan_transmit_followup_request(
+        id, getIfaceHandle(iface_name), &msg_internal);
+}
+
+wifi_error WifiLegacyHal::nanStatsRequest(const std::string& iface_name,
+                                          transaction_id id,
+                                          const NanStatsRequest& msg) {
+    NanStatsRequest msg_internal(msg);
+    return global_func_table_.wifi_nan_stats_request(
+        id, getIfaceHandle(iface_name), &msg_internal);
+}
+
+wifi_error WifiLegacyHal::nanConfigRequest(const std::string& iface_name,
+                                           transaction_id id,
+                                           const NanConfigRequest& msg) {
+    NanConfigRequest msg_internal(msg);
+    return global_func_table_.wifi_nan_config_request(
+        id, getIfaceHandle(iface_name), &msg_internal);
+}
+
+wifi_error WifiLegacyHal::nanTcaRequest(const std::string& iface_name,
+                                        transaction_id id,
+                                        const NanTCARequest& msg) {
+    NanTCARequest msg_internal(msg);
+    return global_func_table_.wifi_nan_tca_request(
+        id, getIfaceHandle(iface_name), &msg_internal);
+}
+
+wifi_error WifiLegacyHal::nanBeaconSdfPayloadRequest(
+    const std::string& iface_name, transaction_id id,
+    const NanBeaconSdfPayloadRequest& msg) {
+    NanBeaconSdfPayloadRequest msg_internal(msg);
+    return global_func_table_.wifi_nan_beacon_sdf_payload_request(
+        id, getIfaceHandle(iface_name), &msg_internal);
+}
+
+std::pair<wifi_error, NanVersion> WifiLegacyHal::nanGetVersion() {
+    NanVersion version;
+    wifi_error status =
+        global_func_table_.wifi_nan_get_version(global_handle_, &version);
+    return {status, version};
+}
+
+wifi_error WifiLegacyHal::nanGetCapabilities(const std::string& iface_name,
+                                             transaction_id id) {
+    return global_func_table_.wifi_nan_get_capabilities(
+        id, getIfaceHandle(iface_name));
+}
+
+wifi_error WifiLegacyHal::nanDataInterfaceCreate(
+    const std::string& iface_name, transaction_id id,
+    const std::string& data_iface_name) {
+    return global_func_table_.wifi_nan_data_interface_create(
+        id, getIfaceHandle(iface_name), makeCharVec(data_iface_name).data());
+}
+
+wifi_error WifiLegacyHal::nanDataInterfaceDelete(
+    const std::string& iface_name, transaction_id id,
+    const std::string& data_iface_name) {
+    return global_func_table_.wifi_nan_data_interface_delete(
+        id, getIfaceHandle(iface_name), makeCharVec(data_iface_name).data());
+}
+
+wifi_error WifiLegacyHal::nanDataRequestInitiator(
+    const std::string& iface_name, transaction_id id,
+    const NanDataPathInitiatorRequest& msg) {
+    NanDataPathInitiatorRequest msg_internal(msg);
+    return global_func_table_.wifi_nan_data_request_initiator(
+        id, getIfaceHandle(iface_name), &msg_internal);
+}
+
+wifi_error WifiLegacyHal::nanDataIndicationResponse(
+    const std::string& iface_name, transaction_id id,
+    const NanDataPathIndicationResponse& msg) {
+    NanDataPathIndicationResponse msg_internal(msg);
+    return global_func_table_.wifi_nan_data_indication_response(
+        id, getIfaceHandle(iface_name), &msg_internal);
+}
+
+typedef struct {
+    u8 num_ndp_instances;
+    NanDataPathId ndp_instance_id;
+} NanDataPathEndSingleNdpIdRequest;
+
+wifi_error WifiLegacyHal::nanDataEnd(const std::string& iface_name,
+                                     transaction_id id,
+                                     uint32_t ndpInstanceId) {
+    NanDataPathEndSingleNdpIdRequest msg;
+    msg.num_ndp_instances = 1;
+    msg.ndp_instance_id = ndpInstanceId;
+    wifi_error status = global_func_table_.wifi_nan_data_end(
+        id, getIfaceHandle(iface_name), (NanDataPathEndRequest*)&msg);
+    return status;
+}
+
+wifi_error WifiLegacyHal::setCountryCode(const std::string& iface_name,
+                                         std::array<int8_t, 2> code) {
+    std::string code_str(code.data(), code.data() + code.size());
+    return global_func_table_.wifi_set_country_code(getIfaceHandle(iface_name),
+                                                    code_str.c_str());
+}
+
+wifi_error WifiLegacyHal::retrieveIfaceHandles() {
+    wifi_interface_handle* iface_handles = nullptr;
+    int num_iface_handles = 0;
+    wifi_error status = global_func_table_.wifi_get_ifaces(
+        global_handle_, &num_iface_handles, &iface_handles);
+    if (status != WIFI_SUCCESS) {
+        LOG(ERROR) << "Failed to enumerate interface handles";
+        return status;
+    }
+    for (int i = 0; i < num_iface_handles; ++i) {
+        std::array<char, IFNAMSIZ> iface_name_arr = {};
+        status = global_func_table_.wifi_get_iface_name(
+            iface_handles[i], iface_name_arr.data(), iface_name_arr.size());
+        if (status != WIFI_SUCCESS) {
+            LOG(WARNING) << "Failed to get interface handle name";
+            continue;
+        }
+        // Assuming the interface name is null terminated since the legacy HAL
+        // API does not return a size.
+        std::string iface_name(iface_name_arr.data());
+        LOG(INFO) << "Adding interface handle for " << iface_name;
+        iface_name_to_handle_[iface_name] = iface_handles[i];
+    }
+    return WIFI_SUCCESS;
+}
+
+wifi_interface_handle WifiLegacyHal::getIfaceHandle(
+    const std::string& iface_name) {
+    const auto iface_handle_iter = iface_name_to_handle_.find(iface_name);
+    if (iface_handle_iter == iface_name_to_handle_.end()) {
+        LOG(ERROR) << "Unknown iface name: " << iface_name;
+        return nullptr;
+    }
+    return iface_handle_iter->second;
+}
+
+void WifiLegacyHal::runEventLoop() {
+    LOG(DEBUG) << "Starting legacy HAL event loop";
+    global_func_table_.wifi_event_loop(global_handle_);
+    const auto lock = hidl_sync_util::acquireGlobalLock();
+    if (!awaiting_event_loop_termination_) {
+        LOG(FATAL)
+            << "Legacy HAL event loop terminated, but HAL was not stopping";
+    }
+    LOG(DEBUG) << "Legacy HAL event loop terminated";
+    awaiting_event_loop_termination_ = false;
+    stop_wait_cv_.notify_one();
+}
+
+std::pair<wifi_error, std::vector<wifi_cached_scan_results>>
+WifiLegacyHal::getGscanCachedResults(const std::string& iface_name) {
+    std::vector<wifi_cached_scan_results> cached_scan_results;
+    cached_scan_results.resize(kMaxCachedGscanResults);
+    int32_t num_results = 0;
+    wifi_error status = global_func_table_.wifi_get_cached_gscan_results(
+        getIfaceHandle(iface_name), true /* always flush */,
+        cached_scan_results.size(), cached_scan_results.data(), &num_results);
+    CHECK(num_results >= 0 &&
+          static_cast<uint32_t>(num_results) <= kMaxCachedGscanResults);
+    cached_scan_results.resize(num_results);
+    // Check for invalid IE lengths in these cached scan results and correct it.
+    for (auto& cached_scan_result : cached_scan_results) {
+        int num_scan_results = cached_scan_result.num_results;
+        for (int i = 0; i < num_scan_results; i++) {
+            auto& scan_result = cached_scan_result.results[i];
+            if (scan_result.ie_length > 0) {
+                LOG(DEBUG) << "Cached scan result has non-zero IE length "
+                           << scan_result.ie_length;
+                scan_result.ie_length = 0;
+            }
+        }
+    }
+    return {status, std::move(cached_scan_results)};
+}
+
+void WifiLegacyHal::invalidate() {
+    global_handle_ = nullptr;
+    iface_name_to_handle_.clear();
+    on_driver_memory_dump_internal_callback = nullptr;
+    on_firmware_memory_dump_internal_callback = nullptr;
+    on_gscan_event_internal_callback = nullptr;
+    on_gscan_full_result_internal_callback = nullptr;
+    on_link_layer_stats_result_internal_callback = nullptr;
+    on_rssi_threshold_breached_internal_callback = nullptr;
+    on_ring_buffer_data_internal_callback = nullptr;
+    on_error_alert_internal_callback = nullptr;
+    on_radio_mode_change_internal_callback = nullptr;
+    on_rtt_results_internal_callback = nullptr;
+    on_nan_notify_response_user_callback = nullptr;
+    on_nan_event_publish_terminated_user_callback = nullptr;
+    on_nan_event_match_user_callback = nullptr;
+    on_nan_event_match_expired_user_callback = nullptr;
+    on_nan_event_subscribe_terminated_user_callback = nullptr;
+    on_nan_event_followup_user_callback = nullptr;
+    on_nan_event_disc_eng_event_user_callback = nullptr;
+    on_nan_event_disabled_user_callback = nullptr;
+    on_nan_event_tca_user_callback = nullptr;
+    on_nan_event_beacon_sdf_payload_user_callback = nullptr;
+    on_nan_event_data_path_request_user_callback = nullptr;
+    on_nan_event_data_path_confirm_user_callback = nullptr;
+    on_nan_event_data_path_end_user_callback = nullptr;
+    on_nan_event_transmit_follow_up_user_callback = nullptr;
+    on_nan_event_range_request_user_callback = nullptr;
+    on_nan_event_range_report_user_callback = nullptr;
+    on_nan_event_schedule_update_user_callback = nullptr;
+}
+
+}  // namespace legacy_hal
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.4/default/wifi_legacy_hal.h b/wifi/1.4/default/wifi_legacy_hal.h
new file mode 100644
index 0000000..a7b40a0
--- /dev/null
+++ b/wifi/1.4/default/wifi_legacy_hal.h
@@ -0,0 +1,406 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef WIFI_LEGACY_HAL_H_
+#define WIFI_LEGACY_HAL_H_
+
+#include <condition_variable>
+#include <functional>
+#include <map>
+#include <thread>
+#include <vector>
+
+#include <wifi_system/interface_tool.h>
+
+// HACK: The include inside the namespace below also transitively includes a
+// bunch of libc headers into the namespace, which leads to functions like
+// socketpair being defined in
+// android::hardware::wifi::V1_1::implementation::legacy_hal. Include this one
+// particular header as a hacky workaround until that's fixed.
+#include <sys/socket.h>
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+// This is in a separate namespace to prevent typename conflicts between
+// the legacy HAL types and the HIDL interface types.
+namespace legacy_hal {
+// Wrap all the types defined inside the legacy HAL header files inside this
+// namespace.
+#include <hardware_legacy/wifi_hal.h>
+
+// APF capabilities supported by the iface.
+struct PacketFilterCapabilities {
+    uint32_t version;
+    uint32_t max_len;
+};
+
+// WARNING: We don't care about the variable sized members of either
+// |wifi_iface_stat|, |wifi_radio_stat| structures. So, using the pragma
+// to escape the compiler warnings regarding this.
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wgnu-variable-sized-type-not-at-end"
+// The |wifi_radio_stat.tx_time_per_levels| stats is provided as a pointer in
+// |wifi_radio_stat| structure in the legacy HAL API. Separate that out
+// into a separate return element to avoid passing pointers around.
+struct LinkLayerRadioStats {
+    wifi_radio_stat stats;
+    std::vector<uint32_t> tx_time_per_levels;
+    std::vector<wifi_channel_stat> channel_stats;
+};
+
+struct LinkLayerStats {
+    wifi_iface_stat iface;
+    std::vector<LinkLayerRadioStats> radios;
+};
+#pragma GCC diagnostic pop
+
+// The |WLAN_DRIVER_WAKE_REASON_CNT.cmd_event_wake_cnt| and
+// |WLAN_DRIVER_WAKE_REASON_CNT.driver_fw_local_wake_cnt| stats is provided
+// as a pointer in |WLAN_DRIVER_WAKE_REASON_CNT| structure in the legacy HAL
+// API. Separate that out into a separate return elements to avoid passing
+// pointers around.
+struct WakeReasonStats {
+    WLAN_DRIVER_WAKE_REASON_CNT wake_reason_cnt;
+    std::vector<uint32_t> cmd_event_wake_cnt;
+    std::vector<uint32_t> driver_fw_local_wake_cnt;
+};
+
+// NAN response and event callbacks struct.
+struct NanCallbackHandlers {
+    // NotifyResponse invoked to notify the status of the Request.
+    std::function<void(transaction_id, const NanResponseMsg&)>
+        on_notify_response;
+    // Various event callbacks.
+    std::function<void(const NanPublishTerminatedInd&)>
+        on_event_publish_terminated;
+    std::function<void(const NanMatchInd&)> on_event_match;
+    std::function<void(const NanMatchExpiredInd&)> on_event_match_expired;
+    std::function<void(const NanSubscribeTerminatedInd&)>
+        on_event_subscribe_terminated;
+    std::function<void(const NanFollowupInd&)> on_event_followup;
+    std::function<void(const NanDiscEngEventInd&)> on_event_disc_eng_event;
+    std::function<void(const NanDisabledInd&)> on_event_disabled;
+    std::function<void(const NanTCAInd&)> on_event_tca;
+    std::function<void(const NanBeaconSdfPayloadInd&)>
+        on_event_beacon_sdf_payload;
+    std::function<void(const NanDataPathRequestInd&)>
+        on_event_data_path_request;
+    std::function<void(const NanDataPathConfirmInd&)>
+        on_event_data_path_confirm;
+    std::function<void(const NanDataPathEndInd&)> on_event_data_path_end;
+    std::function<void(const NanTransmitFollowupInd&)>
+        on_event_transmit_follow_up;
+    std::function<void(const NanRangeRequestInd&)> on_event_range_request;
+    std::function<void(const NanRangeReportInd&)> on_event_range_report;
+    std::function<void(const NanDataPathScheduleUpdateInd&)>
+        on_event_schedule_update;
+};
+
+// Full scan results contain IE info and are hence passed by reference, to
+// preserve the variable length array member |ie_data|. Callee must not retain
+// the pointer.
+using on_gscan_full_result_callback =
+    std::function<void(wifi_request_id, const wifi_scan_result*, uint32_t)>;
+// These scan results don't contain any IE info, so no need to pass by
+// reference.
+using on_gscan_results_callback = std::function<void(
+    wifi_request_id, const std::vector<wifi_cached_scan_results>&)>;
+
+// Invoked when the rssi value breaches the thresholds set.
+using on_rssi_threshold_breached_callback =
+    std::function<void(wifi_request_id, std::array<uint8_t, 6>, int8_t)>;
+
+// Callback for RTT range request results.
+// Rtt results contain IE info and are hence passed by reference, to
+// preserve the |LCI| and |LCR| pointers. Callee must not retain
+// the pointer.
+using on_rtt_results_callback = std::function<void(
+    wifi_request_id, const std::vector<const wifi_rtt_result*>&)>;
+
+// Callback for ring buffer data.
+using on_ring_buffer_data_callback =
+    std::function<void(const std::string&, const std::vector<uint8_t>&,
+                       const wifi_ring_buffer_status&)>;
+
+// Callback for alerts.
+using on_error_alert_callback =
+    std::function<void(int32_t, const std::vector<uint8_t>&)>;
+
+// Struct for the mac info from the legacy HAL. This is a cleaner version
+// of the |wifi_mac_info| & |wifi_iface_info|.
+typedef struct {
+    std::string name;
+    wifi_channel channel;
+} WifiIfaceInfo;
+
+typedef struct {
+    uint32_t wlan_mac_id;
+    /* BIT MASK of BIT(WLAN_MAC*) as represented by wlan_mac_band */
+    uint32_t mac_band;
+    /* Represents the connected Wi-Fi interfaces associated with each MAC */
+    std::vector<WifiIfaceInfo> iface_infos;
+} WifiMacInfo;
+
+// Callback for radio mode change
+using on_radio_mode_change_callback =
+    std::function<void(const std::vector<WifiMacInfo>&)>;
+
+/**
+ * Class that encapsulates all legacy HAL interactions.
+ * This class manages the lifetime of the event loop thread used by legacy HAL.
+ *
+ * Note: There will only be a single instance of this class created in the Wifi
+ * object and will be valid for the lifetime of the process.
+ */
+class WifiLegacyHal {
+   public:
+    WifiLegacyHal(const std::weak_ptr<wifi_system::InterfaceTool> iface_tool);
+    virtual ~WifiLegacyHal() = default;
+
+    // Initialize the legacy HAL function table.
+    virtual wifi_error initialize();
+    // Start the legacy HAL and the event looper thread.
+    virtual wifi_error start();
+    // Deinitialize the legacy HAL and wait for the event loop thread to exit
+    // using a predefined timeout.
+    virtual wifi_error stop(std::unique_lock<std::recursive_mutex>* lock,
+                            const std::function<void()>& on_complete_callback);
+    // Checks if legacy HAL has successfully started
+    bool isStarted();
+    // Wrappers for all the functions in the legacy HAL function table.
+    virtual std::pair<wifi_error, std::string> getDriverVersion(
+        const std::string& iface_name);
+    virtual std::pair<wifi_error, std::string> getFirmwareVersion(
+        const std::string& iface_name);
+    std::pair<wifi_error, std::vector<uint8_t>> requestDriverMemoryDump(
+        const std::string& iface_name);
+    std::pair<wifi_error, std::vector<uint8_t>> requestFirmwareMemoryDump(
+        const std::string& iface_name);
+    std::pair<wifi_error, uint32_t> getSupportedFeatureSet(
+        const std::string& iface_name);
+    // APF functions.
+    std::pair<wifi_error, PacketFilterCapabilities> getPacketFilterCapabilities(
+        const std::string& iface_name);
+    wifi_error setPacketFilter(const std::string& iface_name,
+                               const std::vector<uint8_t>& program);
+    std::pair<wifi_error, std::vector<uint8_t>> readApfPacketFilterData(
+        const std::string& iface_name);
+    // Gscan functions.
+    std::pair<wifi_error, wifi_gscan_capabilities> getGscanCapabilities(
+        const std::string& iface_name);
+    // These API's provides a simplified interface over the legacy Gscan API's:
+    // a) All scan events from the legacy HAL API other than the
+    //    |WIFI_SCAN_FAILED| are treated as notification of results.
+    //    This method then retrieves the cached scan results from the legacy
+    //    HAL API and triggers the externally provided
+    //    |on_results_user_callback| on success.
+    // b) |WIFI_SCAN_FAILED| scan event or failure to retrieve cached scan
+    // results
+    //    triggers the externally provided |on_failure_user_callback|.
+    // c) Full scan result event triggers the externally provided
+    //    |on_full_result_user_callback|.
+    wifi_error startGscan(
+        const std::string& iface_name, wifi_request_id id,
+        const wifi_scan_cmd_params& params,
+        const std::function<void(wifi_request_id)>& on_failure_callback,
+        const on_gscan_results_callback& on_results_callback,
+        const on_gscan_full_result_callback& on_full_result_callback);
+    wifi_error stopGscan(const std::string& iface_name, wifi_request_id id);
+    std::pair<wifi_error, std::vector<uint32_t>> getValidFrequenciesForBand(
+        const std::string& iface_name, wifi_band band);
+    virtual wifi_error setDfsFlag(const std::string& iface_name, bool dfs_on);
+    // Link layer stats functions.
+    wifi_error enableLinkLayerStats(const std::string& iface_name, bool debug);
+    wifi_error disableLinkLayerStats(const std::string& iface_name);
+    std::pair<wifi_error, LinkLayerStats> getLinkLayerStats(
+        const std::string& iface_name);
+    // RSSI monitor functions.
+    wifi_error startRssiMonitoring(const std::string& iface_name,
+                                   wifi_request_id id, int8_t max_rssi,
+                                   int8_t min_rssi,
+                                   const on_rssi_threshold_breached_callback&
+                                       on_threshold_breached_callback);
+    wifi_error stopRssiMonitoring(const std::string& iface_name,
+                                  wifi_request_id id);
+    std::pair<wifi_error, wifi_roaming_capabilities> getRoamingCapabilities(
+        const std::string& iface_name);
+    wifi_error configureRoaming(const std::string& iface_name,
+                                const wifi_roaming_config& config);
+    wifi_error enableFirmwareRoaming(const std::string& iface_name,
+                                     fw_roaming_state_t state);
+    wifi_error configureNdOffload(const std::string& iface_name, bool enable);
+    wifi_error startSendingOffloadedPacket(
+        const std::string& iface_name, uint32_t cmd_id, uint16_t ether_type,
+        const std::vector<uint8_t>& ip_packet_data,
+        const std::array<uint8_t, 6>& src_address,
+        const std::array<uint8_t, 6>& dst_address, uint32_t period_in_ms);
+    wifi_error stopSendingOffloadedPacket(const std::string& iface_name,
+                                          uint32_t cmd_id);
+    wifi_error setScanningMacOui(const std::string& iface_name,
+                                 const std::array<uint8_t, 3>& oui);
+    virtual wifi_error selectTxPowerScenario(const std::string& iface_name,
+                                             wifi_power_scenario scenario);
+    virtual wifi_error resetTxPowerScenario(const std::string& iface_name);
+    wifi_error setLatencyMode(const std::string& iface_name,
+                              wifi_latency_mode mode);
+    wifi_error setThermalMitigationMode(wifi_thermal_mode mode,
+                                        uint32_t completion_window);
+    // Logger/debug functions.
+    std::pair<wifi_error, uint32_t> getLoggerSupportedFeatureSet(
+        const std::string& iface_name);
+    wifi_error startPktFateMonitoring(const std::string& iface_name);
+    std::pair<wifi_error, std::vector<wifi_tx_report>> getTxPktFates(
+        const std::string& iface_name);
+    std::pair<wifi_error, std::vector<wifi_rx_report>> getRxPktFates(
+        const std::string& iface_name);
+    std::pair<wifi_error, WakeReasonStats> getWakeReasonStats(
+        const std::string& iface_name);
+    wifi_error registerRingBufferCallbackHandler(
+        const std::string& iface_name,
+        const on_ring_buffer_data_callback& on_data_callback);
+    wifi_error deregisterRingBufferCallbackHandler(
+        const std::string& iface_name);
+    std::pair<wifi_error, std::vector<wifi_ring_buffer_status>>
+    getRingBuffersStatus(const std::string& iface_name);
+    wifi_error startRingBufferLogging(const std::string& iface_name,
+                                      const std::string& ring_name,
+                                      uint32_t verbose_level,
+                                      uint32_t max_interval_sec,
+                                      uint32_t min_data_size);
+    wifi_error getRingBufferData(const std::string& iface_name,
+                                 const std::string& ring_name);
+    wifi_error registerErrorAlertCallbackHandler(
+        const std::string& iface_name,
+        const on_error_alert_callback& on_alert_callback);
+    wifi_error deregisterErrorAlertCallbackHandler(
+        const std::string& iface_name);
+    // Radio mode functions.
+    virtual wifi_error registerRadioModeChangeCallbackHandler(
+        const std::string& iface_name,
+        const on_radio_mode_change_callback& on_user_change_callback);
+    // RTT functions.
+    wifi_error startRttRangeRequest(
+        const std::string& iface_name, wifi_request_id id,
+        const std::vector<wifi_rtt_config>& rtt_configs,
+        const on_rtt_results_callback& on_results_callback);
+    wifi_error cancelRttRangeRequest(
+        const std::string& iface_name, wifi_request_id id,
+        const std::vector<std::array<uint8_t, 6>>& mac_addrs);
+    std::pair<wifi_error, wifi_rtt_capabilities> getRttCapabilities(
+        const std::string& iface_name);
+    std::pair<wifi_error, wifi_rtt_responder> getRttResponderInfo(
+        const std::string& iface_name);
+    wifi_error enableRttResponder(const std::string& iface_name,
+                                  wifi_request_id id,
+                                  const wifi_channel_info& channel_hint,
+                                  uint32_t max_duration_secs,
+                                  const wifi_rtt_responder& info);
+    wifi_error disableRttResponder(const std::string& iface_name,
+                                   wifi_request_id id);
+    wifi_error setRttLci(const std::string& iface_name, wifi_request_id id,
+                         const wifi_lci_information& info);
+    wifi_error setRttLcr(const std::string& iface_name, wifi_request_id id,
+                         const wifi_lcr_information& info);
+    // NAN functions.
+    virtual wifi_error nanRegisterCallbackHandlers(
+        const std::string& iface_name, const NanCallbackHandlers& callbacks);
+    wifi_error nanEnableRequest(const std::string& iface_name,
+                                transaction_id id, const NanEnableRequest& msg);
+    virtual wifi_error nanDisableRequest(const std::string& iface_name,
+                                         transaction_id id);
+    wifi_error nanPublishRequest(const std::string& iface_name,
+                                 transaction_id id,
+                                 const NanPublishRequest& msg);
+    wifi_error nanPublishCancelRequest(const std::string& iface_name,
+                                       transaction_id id,
+                                       const NanPublishCancelRequest& msg);
+    wifi_error nanSubscribeRequest(const std::string& iface_name,
+                                   transaction_id id,
+                                   const NanSubscribeRequest& msg);
+    wifi_error nanSubscribeCancelRequest(const std::string& iface_name,
+                                         transaction_id id,
+                                         const NanSubscribeCancelRequest& msg);
+    wifi_error nanTransmitFollowupRequest(
+        const std::string& iface_name, transaction_id id,
+        const NanTransmitFollowupRequest& msg);
+    wifi_error nanStatsRequest(const std::string& iface_name, transaction_id id,
+                               const NanStatsRequest& msg);
+    wifi_error nanConfigRequest(const std::string& iface_name,
+                                transaction_id id, const NanConfigRequest& msg);
+    wifi_error nanTcaRequest(const std::string& iface_name, transaction_id id,
+                             const NanTCARequest& msg);
+    wifi_error nanBeaconSdfPayloadRequest(
+        const std::string& iface_name, transaction_id id,
+        const NanBeaconSdfPayloadRequest& msg);
+    std::pair<wifi_error, NanVersion> nanGetVersion();
+    wifi_error nanGetCapabilities(const std::string& iface_name,
+                                  transaction_id id);
+    wifi_error nanDataInterfaceCreate(const std::string& iface_name,
+                                      transaction_id id,
+                                      const std::string& data_iface_name);
+    virtual wifi_error nanDataInterfaceDelete(
+        const std::string& iface_name, transaction_id id,
+        const std::string& data_iface_name);
+    wifi_error nanDataRequestInitiator(const std::string& iface_name,
+                                       transaction_id id,
+                                       const NanDataPathInitiatorRequest& msg);
+    wifi_error nanDataIndicationResponse(
+        const std::string& iface_name, transaction_id id,
+        const NanDataPathIndicationResponse& msg);
+    wifi_error nanDataEnd(const std::string& iface_name, transaction_id id,
+                          uint32_t ndpInstanceId);
+    // AP functions.
+    wifi_error setCountryCode(const std::string& iface_name,
+                              std::array<int8_t, 2> code);
+
+   private:
+    // Retrieve interface handles for all the available interfaces.
+    wifi_error retrieveIfaceHandles();
+    wifi_interface_handle getIfaceHandle(const std::string& iface_name);
+    // Run the legacy HAL event loop thread.
+    void runEventLoop();
+    // Retrieve the cached gscan results to pass the results back to the
+    // external callbacks.
+    std::pair<wifi_error, std::vector<wifi_cached_scan_results>>
+    getGscanCachedResults(const std::string& iface_name);
+    void invalidate();
+
+    // Global function table of legacy HAL.
+    wifi_hal_fn global_func_table_;
+    // Opaque handle to be used for all global operations.
+    wifi_handle global_handle_;
+    // Map of interface name to handle that is to be used for all interface
+    // specific operations.
+    std::map<std::string, wifi_interface_handle> iface_name_to_handle_;
+    // Flag to indicate if we have initiated the cleanup of legacy HAL.
+    std::atomic<bool> awaiting_event_loop_termination_;
+    std::condition_variable_any stop_wait_cv_;
+    // Flag to indicate if the legacy HAL has been started.
+    bool is_started_;
+    std::weak_ptr<wifi_system::InterfaceTool> iface_tool_;
+};
+
+}  // namespace legacy_hal
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // WIFI_LEGACY_HAL_H_
diff --git a/wifi/1.4/default/wifi_legacy_hal_stubs.cpp b/wifi/1.4/default/wifi_legacy_hal_stubs.cpp
new file mode 100644
index 0000000..bbe470e
--- /dev/null
+++ b/wifi/1.4/default/wifi_legacy_hal_stubs.cpp
@@ -0,0 +1,149 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "wifi_legacy_hal_stubs.h"
+
+// TODO: Remove these stubs from HalTool in libwifi-system.
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+namespace legacy_hal {
+template <typename>
+struct stubFunction;
+
+template <typename R, typename... Args>
+struct stubFunction<R (*)(Args...)> {
+    static constexpr R invoke(Args...) { return WIFI_ERROR_NOT_SUPPORTED; }
+};
+template <typename... Args>
+struct stubFunction<void (*)(Args...)> {
+    static constexpr void invoke(Args...) {}
+};
+
+template <typename T>
+void populateStubFor(T* val) {
+    *val = &stubFunction<T>::invoke;
+}
+
+bool initHalFuncTableWithStubs(wifi_hal_fn* hal_fn) {
+    if (hal_fn == nullptr) {
+        return false;
+    }
+    populateStubFor(&hal_fn->wifi_initialize);
+    populateStubFor(&hal_fn->wifi_wait_for_driver_ready);
+    populateStubFor(&hal_fn->wifi_cleanup);
+    populateStubFor(&hal_fn->wifi_event_loop);
+    populateStubFor(&hal_fn->wifi_get_error_info);
+    populateStubFor(&hal_fn->wifi_get_supported_feature_set);
+    populateStubFor(&hal_fn->wifi_get_concurrency_matrix);
+    populateStubFor(&hal_fn->wifi_set_scanning_mac_oui);
+    populateStubFor(&hal_fn->wifi_get_supported_channels);
+    populateStubFor(&hal_fn->wifi_is_epr_supported);
+    populateStubFor(&hal_fn->wifi_get_ifaces);
+    populateStubFor(&hal_fn->wifi_get_iface_name);
+    populateStubFor(&hal_fn->wifi_set_iface_event_handler);
+    populateStubFor(&hal_fn->wifi_reset_iface_event_handler);
+    populateStubFor(&hal_fn->wifi_start_gscan);
+    populateStubFor(&hal_fn->wifi_stop_gscan);
+    populateStubFor(&hal_fn->wifi_get_cached_gscan_results);
+    populateStubFor(&hal_fn->wifi_set_bssid_hotlist);
+    populateStubFor(&hal_fn->wifi_reset_bssid_hotlist);
+    populateStubFor(&hal_fn->wifi_set_significant_change_handler);
+    populateStubFor(&hal_fn->wifi_reset_significant_change_handler);
+    populateStubFor(&hal_fn->wifi_get_gscan_capabilities);
+    populateStubFor(&hal_fn->wifi_set_link_stats);
+    populateStubFor(&hal_fn->wifi_get_link_stats);
+    populateStubFor(&hal_fn->wifi_clear_link_stats);
+    populateStubFor(&hal_fn->wifi_get_valid_channels);
+    populateStubFor(&hal_fn->wifi_rtt_range_request);
+    populateStubFor(&hal_fn->wifi_rtt_range_cancel);
+    populateStubFor(&hal_fn->wifi_get_rtt_capabilities);
+    populateStubFor(&hal_fn->wifi_rtt_get_responder_info);
+    populateStubFor(&hal_fn->wifi_enable_responder);
+    populateStubFor(&hal_fn->wifi_disable_responder);
+    populateStubFor(&hal_fn->wifi_set_nodfs_flag);
+    populateStubFor(&hal_fn->wifi_start_logging);
+    populateStubFor(&hal_fn->wifi_set_epno_list);
+    populateStubFor(&hal_fn->wifi_reset_epno_list);
+    populateStubFor(&hal_fn->wifi_set_country_code);
+    populateStubFor(&hal_fn->wifi_get_firmware_memory_dump);
+    populateStubFor(&hal_fn->wifi_set_log_handler);
+    populateStubFor(&hal_fn->wifi_reset_log_handler);
+    populateStubFor(&hal_fn->wifi_set_alert_handler);
+    populateStubFor(&hal_fn->wifi_reset_alert_handler);
+    populateStubFor(&hal_fn->wifi_get_firmware_version);
+    populateStubFor(&hal_fn->wifi_get_ring_buffers_status);
+    populateStubFor(&hal_fn->wifi_get_logger_supported_feature_set);
+    populateStubFor(&hal_fn->wifi_get_ring_data);
+    populateStubFor(&hal_fn->wifi_enable_tdls);
+    populateStubFor(&hal_fn->wifi_disable_tdls);
+    populateStubFor(&hal_fn->wifi_get_tdls_status);
+    populateStubFor(&hal_fn->wifi_get_tdls_capabilities);
+    populateStubFor(&hal_fn->wifi_get_driver_version);
+    populateStubFor(&hal_fn->wifi_set_passpoint_list);
+    populateStubFor(&hal_fn->wifi_reset_passpoint_list);
+    populateStubFor(&hal_fn->wifi_set_lci);
+    populateStubFor(&hal_fn->wifi_set_lcr);
+    populateStubFor(&hal_fn->wifi_start_sending_offloaded_packet);
+    populateStubFor(&hal_fn->wifi_stop_sending_offloaded_packet);
+    populateStubFor(&hal_fn->wifi_start_rssi_monitoring);
+    populateStubFor(&hal_fn->wifi_stop_rssi_monitoring);
+    populateStubFor(&hal_fn->wifi_get_wake_reason_stats);
+    populateStubFor(&hal_fn->wifi_configure_nd_offload);
+    populateStubFor(&hal_fn->wifi_get_driver_memory_dump);
+    populateStubFor(&hal_fn->wifi_start_pkt_fate_monitoring);
+    populateStubFor(&hal_fn->wifi_get_tx_pkt_fates);
+    populateStubFor(&hal_fn->wifi_get_rx_pkt_fates);
+    populateStubFor(&hal_fn->wifi_nan_enable_request);
+    populateStubFor(&hal_fn->wifi_nan_disable_request);
+    populateStubFor(&hal_fn->wifi_nan_publish_request);
+    populateStubFor(&hal_fn->wifi_nan_publish_cancel_request);
+    populateStubFor(&hal_fn->wifi_nan_subscribe_request);
+    populateStubFor(&hal_fn->wifi_nan_subscribe_cancel_request);
+    populateStubFor(&hal_fn->wifi_nan_transmit_followup_request);
+    populateStubFor(&hal_fn->wifi_nan_stats_request);
+    populateStubFor(&hal_fn->wifi_nan_config_request);
+    populateStubFor(&hal_fn->wifi_nan_tca_request);
+    populateStubFor(&hal_fn->wifi_nan_beacon_sdf_payload_request);
+    populateStubFor(&hal_fn->wifi_nan_register_handler);
+    populateStubFor(&hal_fn->wifi_nan_get_version);
+    populateStubFor(&hal_fn->wifi_nan_get_capabilities);
+    populateStubFor(&hal_fn->wifi_nan_data_interface_create);
+    populateStubFor(&hal_fn->wifi_nan_data_interface_delete);
+    populateStubFor(&hal_fn->wifi_nan_data_request_initiator);
+    populateStubFor(&hal_fn->wifi_nan_data_indication_response);
+    populateStubFor(&hal_fn->wifi_nan_data_end);
+    populateStubFor(&hal_fn->wifi_get_packet_filter_capabilities);
+    populateStubFor(&hal_fn->wifi_set_packet_filter);
+    populateStubFor(&hal_fn->wifi_read_packet_filter);
+    populateStubFor(&hal_fn->wifi_get_roaming_capabilities);
+    populateStubFor(&hal_fn->wifi_enable_firmware_roaming);
+    populateStubFor(&hal_fn->wifi_configure_roaming);
+    populateStubFor(&hal_fn->wifi_select_tx_power_scenario);
+    populateStubFor(&hal_fn->wifi_reset_tx_power_scenario);
+    populateStubFor(&hal_fn->wifi_set_radio_mode_change_handler);
+    populateStubFor(&hal_fn->wifi_set_latency_mode);
+    populateStubFor(&hal_fn->wifi_set_thermal_mitigation_mode);
+    return true;
+}
+}  // namespace legacy_hal
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.4/default/wifi_legacy_hal_stubs.h b/wifi/1.4/default/wifi_legacy_hal_stubs.h
new file mode 100644
index 0000000..577a545
--- /dev/null
+++ b/wifi/1.4/default/wifi_legacy_hal_stubs.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef WIFI_LEGACY_HAL_STUBS_H_
+#define WIFI_LEGACY_HAL_STUBS_H_
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+namespace legacy_hal {
+#include <hardware_legacy/wifi_hal.h>
+
+bool initHalFuncTableWithStubs(wifi_hal_fn* hal_fn);
+}  // namespace legacy_hal
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // WIFI_LEGACY_HAL_STUBS_H_
diff --git a/wifi/1.4/default/wifi_mode_controller.cpp b/wifi/1.4/default/wifi_mode_controller.cpp
new file mode 100644
index 0000000..252121a
--- /dev/null
+++ b/wifi/1.4/default/wifi_mode_controller.cpp
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <android-base/macros.h>
+#include <private/android_filesystem_config.h>
+
+#include "wifi_mode_controller.h"
+
+using android::hardware::wifi::V1_0::IfaceType;
+using android::wifi_hal::DriverTool;
+
+namespace {
+int convertIfaceTypeToFirmwareMode(IfaceType type) {
+    int mode;
+    switch (type) {
+        case IfaceType::AP:
+            mode = DriverTool::kFirmwareModeAp;
+            break;
+        case IfaceType::P2P:
+            mode = DriverTool::kFirmwareModeP2p;
+            break;
+        case IfaceType::NAN:
+            // NAN is exposed in STA mode currently.
+            mode = DriverTool::kFirmwareModeSta;
+            break;
+        case IfaceType::STA:
+            mode = DriverTool::kFirmwareModeSta;
+            break;
+    }
+    return mode;
+}
+}  // namespace
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+namespace mode_controller {
+
+WifiModeController::WifiModeController() : driver_tool_(new DriverTool) {}
+
+bool WifiModeController::isFirmwareModeChangeNeeded(IfaceType type) {
+    return driver_tool_->IsFirmwareModeChangeNeeded(
+        convertIfaceTypeToFirmwareMode(type));
+}
+
+bool WifiModeController::initialize() {
+    if (!driver_tool_->LoadDriver()) {
+        LOG(ERROR) << "Failed to load WiFi driver";
+        return false;
+    }
+    return true;
+}
+
+bool WifiModeController::changeFirmwareMode(IfaceType type) {
+    if (!driver_tool_->ChangeFirmwareMode(
+            convertIfaceTypeToFirmwareMode(type))) {
+        LOG(ERROR) << "Failed to change firmware mode";
+        return false;
+    }
+    return true;
+}
+
+bool WifiModeController::deinitialize() {
+    if (!driver_tool_->UnloadDriver()) {
+        LOG(ERROR) << "Failed to unload WiFi driver";
+        return false;
+    }
+    return true;
+}
+}  // namespace mode_controller
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.4/default/wifi_mode_controller.h b/wifi/1.4/default/wifi_mode_controller.h
new file mode 100644
index 0000000..45fa999
--- /dev/null
+++ b/wifi/1.4/default/wifi_mode_controller.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef WIFI_MODE_CONTROLLER_H_
+#define WIFI_MODE_CONTROLLER_H_
+
+#include <wifi_hal/driver_tool.h>
+
+#include <android/hardware/wifi/1.0/IWifi.h>
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+namespace mode_controller {
+using namespace android::hardware::wifi::V1_0;
+
+/**
+ * Class that encapsulates all firmware mode configuration.
+ * This class will perform the necessary firmware reloads to put the chip in the
+ * required state (essentially a wrapper over DriverTool).
+ */
+class WifiModeController {
+   public:
+    WifiModeController();
+    virtual ~WifiModeController() = default;
+
+    // Checks if a firmware mode change is necessary to support the specified
+    // iface type operations.
+    virtual bool isFirmwareModeChangeNeeded(IfaceType type);
+    virtual bool initialize();
+    // Change the firmware mode to support the specified iface type operations.
+    virtual bool changeFirmwareMode(IfaceType type);
+    // Unload the driver. This should be invoked whenever |IWifi.stop()| is
+    // invoked.
+    virtual bool deinitialize();
+
+   private:
+    std::unique_ptr<wifi_hal::DriverTool> driver_tool_;
+};
+
+}  // namespace mode_controller
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // WIFI_MODE_CONTROLLER_H_
diff --git a/wifi/1.4/default/wifi_nan_iface.cpp b/wifi/1.4/default/wifi_nan_iface.cpp
new file mode 100644
index 0000000..073101c
--- /dev/null
+++ b/wifi/1.4/default/wifi_nan_iface.cpp
@@ -0,0 +1,917 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+
+#include "hidl_return_util.h"
+#include "hidl_struct_util.h"
+#include "wifi_nan_iface.h"
+#include "wifi_status_util.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+using hidl_return_util::validateAndCall;
+
+WifiNanIface::WifiNanIface(
+    const std::string& ifname,
+    const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
+    const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util)
+    : ifname_(ifname),
+      legacy_hal_(legacy_hal),
+      iface_util_(iface_util),
+      is_valid_(true) {
+    // Register all the callbacks here. these should be valid for the lifetime
+    // of the object. Whenever the mode changes legacy HAL will remove
+    // all of these callbacks.
+    legacy_hal::NanCallbackHandlers callback_handlers;
+    android::wp<WifiNanIface> weak_ptr_this(this);
+
+    // Callback for response.
+    callback_handlers
+        .on_notify_response = [weak_ptr_this](
+                                  legacy_hal::transaction_id id,
+                                  const legacy_hal::NanResponseMsg& msg) {
+        const auto shared_ptr_this = weak_ptr_this.promote();
+        if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+            LOG(ERROR) << "Callback invoked on an invalid object";
+            return;
+        }
+        WifiNanStatus wifiNanStatus;
+        if (!hidl_struct_util::convertLegacyNanResponseHeaderToHidl(
+                msg, &wifiNanStatus)) {
+            LOG(ERROR) << "Failed to convert nan response header";
+            return;
+        }
+
+        switch (msg.response_type) {
+            case legacy_hal::NAN_RESPONSE_ENABLED: {
+                for (const auto& callback :
+                     shared_ptr_this->getEventCallbacks()) {
+                    if (!callback->notifyEnableResponse(id, wifiNanStatus)
+                             .isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+                break;
+            }
+            case legacy_hal::NAN_RESPONSE_DISABLED: {
+                for (const auto& callback :
+                     shared_ptr_this->getEventCallbacks()) {
+                    if (!callback->notifyDisableResponse(id, wifiNanStatus)
+                             .isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+                break;
+            }
+            case legacy_hal::NAN_RESPONSE_PUBLISH: {
+                for (const auto& callback :
+                     shared_ptr_this->getEventCallbacks()) {
+                    if (!callback
+                             ->notifyStartPublishResponse(
+                                 id, wifiNanStatus,
+                                 msg.body.publish_response.publish_id)
+                             .isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+                break;
+            }
+            case legacy_hal::NAN_RESPONSE_PUBLISH_CANCEL: {
+                for (const auto& callback :
+                     shared_ptr_this->getEventCallbacks()) {
+                    if (!callback->notifyStopPublishResponse(id, wifiNanStatus)
+                             .isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+                break;
+            }
+            case legacy_hal::NAN_RESPONSE_TRANSMIT_FOLLOWUP: {
+                for (const auto& callback :
+                     shared_ptr_this->getEventCallbacks()) {
+                    if (!callback
+                             ->notifyTransmitFollowupResponse(id, wifiNanStatus)
+                             .isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+                break;
+            }
+            case legacy_hal::NAN_RESPONSE_SUBSCRIBE: {
+                for (const auto& callback :
+                     shared_ptr_this->getEventCallbacks()) {
+                    if (!callback
+                             ->notifyStartSubscribeResponse(
+                                 id, wifiNanStatus,
+                                 msg.body.subscribe_response.subscribe_id)
+                             .isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+                break;
+            }
+            case legacy_hal::NAN_RESPONSE_SUBSCRIBE_CANCEL: {
+                for (const auto& callback :
+                     shared_ptr_this->getEventCallbacks()) {
+                    if (!callback
+                             ->notifyStopSubscribeResponse(id, wifiNanStatus)
+                             .isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+                break;
+            }
+            case legacy_hal::NAN_RESPONSE_CONFIG: {
+                for (const auto& callback :
+                     shared_ptr_this->getEventCallbacks()) {
+                    if (!callback->notifyConfigResponse(id, wifiNanStatus)
+                             .isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+                break;
+            }
+            case legacy_hal::NAN_GET_CAPABILITIES: {
+                NanCapabilities hidl_struct;
+                if (!hidl_struct_util::
+                        convertLegacyNanCapabilitiesResponseToHidl(
+                            msg.body.nan_capabilities, &hidl_struct)) {
+                    LOG(ERROR) << "Failed to convert nan capabilities response";
+                    return;
+                }
+                for (const auto& callback :
+                     shared_ptr_this->getEventCallbacks()) {
+                    if (!callback
+                             ->notifyCapabilitiesResponse(id, wifiNanStatus,
+                                                          hidl_struct)
+                             .isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+                break;
+            }
+            case legacy_hal::NAN_DP_INTERFACE_CREATE: {
+                for (const auto& callback :
+                     shared_ptr_this->getEventCallbacks()) {
+                    if (!callback
+                             ->notifyCreateDataInterfaceResponse(id,
+                                                                 wifiNanStatus)
+                             .isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+                break;
+            }
+            case legacy_hal::NAN_DP_INTERFACE_DELETE: {
+                for (const auto& callback :
+                     shared_ptr_this->getEventCallbacks()) {
+                    if (!callback
+                             ->notifyDeleteDataInterfaceResponse(id,
+                                                                 wifiNanStatus)
+                             .isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+                break;
+            }
+            case legacy_hal::NAN_DP_INITIATOR_RESPONSE: {
+                for (const auto& callback :
+                     shared_ptr_this->getEventCallbacks()) {
+                    if (!callback
+                             ->notifyInitiateDataPathResponse(
+                                 id, wifiNanStatus,
+                                 msg.body.data_request_response.ndp_instance_id)
+                             .isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+                break;
+            }
+            case legacy_hal::NAN_DP_RESPONDER_RESPONSE: {
+                for (const auto& callback :
+                     shared_ptr_this->getEventCallbacks()) {
+                    if (!callback
+                             ->notifyRespondToDataPathIndicationResponse(
+                                 id, wifiNanStatus)
+                             .isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+                break;
+            }
+            case legacy_hal::NAN_DP_END: {
+                for (const auto& callback :
+                     shared_ptr_this->getEventCallbacks()) {
+                    if (!callback
+                             ->notifyTerminateDataPathResponse(id,
+                                                               wifiNanStatus)
+                             .isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+                break;
+            }
+            case legacy_hal::NAN_RESPONSE_BEACON_SDF_PAYLOAD:
+            /* fall through */
+            case legacy_hal::NAN_RESPONSE_TCA:
+            /* fall through */
+            case legacy_hal::NAN_RESPONSE_STATS:
+            /* fall through */
+            case legacy_hal::NAN_RESPONSE_ERROR:
+            /* fall through */
+            default:
+                LOG(ERROR) << "Unknown or unhandled response type: "
+                           << msg.response_type;
+                return;
+        }
+    };
+
+    callback_handlers.on_event_disc_eng_event =
+        [weak_ptr_this](const legacy_hal::NanDiscEngEventInd& msg) {
+            const auto shared_ptr_this = weak_ptr_this.promote();
+            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                LOG(ERROR) << "Callback invoked on an invalid object";
+                return;
+            }
+            NanClusterEventInd hidl_struct;
+            // event types defined identically - hence can be cast
+            hidl_struct.eventType = (NanClusterEventType)msg.event_type;
+            hidl_struct.addr = msg.data.mac_addr.addr;
+
+            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                if (!callback->eventClusterEvent(hidl_struct).isOk()) {
+                    LOG(ERROR) << "Failed to invoke the callback";
+                }
+            }
+        };
+
+    callback_handlers.on_event_disabled =
+        [weak_ptr_this](const legacy_hal::NanDisabledInd& msg) {
+            const auto shared_ptr_this = weak_ptr_this.promote();
+            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                LOG(ERROR) << "Callback invoked on an invalid object";
+                return;
+            }
+            WifiNanStatus status;
+            hidl_struct_util::convertToWifiNanStatus(
+                msg.reason, msg.nan_reason, sizeof(msg.nan_reason), &status);
+
+            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                if (!callback->eventDisabled(status).isOk()) {
+                    LOG(ERROR) << "Failed to invoke the callback";
+                }
+            }
+        };
+
+    callback_handlers.on_event_publish_terminated =
+        [weak_ptr_this](const legacy_hal::NanPublishTerminatedInd& msg) {
+            const auto shared_ptr_this = weak_ptr_this.promote();
+            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                LOG(ERROR) << "Callback invoked on an invalid object";
+                return;
+            }
+            WifiNanStatus status;
+            hidl_struct_util::convertToWifiNanStatus(
+                msg.reason, msg.nan_reason, sizeof(msg.nan_reason), &status);
+
+            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                if (!callback->eventPublishTerminated(msg.publish_id, status)
+                         .isOk()) {
+                    LOG(ERROR) << "Failed to invoke the callback";
+                }
+            }
+        };
+
+    callback_handlers.on_event_subscribe_terminated =
+        [weak_ptr_this](const legacy_hal::NanSubscribeTerminatedInd& msg) {
+            const auto shared_ptr_this = weak_ptr_this.promote();
+            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                LOG(ERROR) << "Callback invoked on an invalid object";
+                return;
+            }
+            WifiNanStatus status;
+            hidl_struct_util::convertToWifiNanStatus(
+                msg.reason, msg.nan_reason, sizeof(msg.nan_reason), &status);
+
+            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                if (!callback
+                         ->eventSubscribeTerminated(msg.subscribe_id, status)
+                         .isOk()) {
+                    LOG(ERROR) << "Failed to invoke the callback";
+                }
+            }
+        };
+
+    callback_handlers.on_event_match =
+        [weak_ptr_this](const legacy_hal::NanMatchInd& msg) {
+            const auto shared_ptr_this = weak_ptr_this.promote();
+            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                LOG(ERROR) << "Callback invoked on an invalid object";
+                return;
+            }
+            NanMatchInd hidl_struct;
+            if (!hidl_struct_util::convertLegacyNanMatchIndToHidl(
+                    msg, &hidl_struct)) {
+                LOG(ERROR) << "Failed to convert nan capabilities response";
+                return;
+            }
+
+            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                if (!callback->eventMatch(hidl_struct).isOk()) {
+                    LOG(ERROR) << "Failed to invoke the callback";
+                }
+            }
+        };
+
+    callback_handlers.on_event_match_expired =
+        [weak_ptr_this](const legacy_hal::NanMatchExpiredInd& msg) {
+            const auto shared_ptr_this = weak_ptr_this.promote();
+            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                LOG(ERROR) << "Callback invoked on an invalid object";
+                return;
+            }
+            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                if (!callback
+                         ->eventMatchExpired(msg.publish_subscribe_id,
+                                             msg.requestor_instance_id)
+                         .isOk()) {
+                    LOG(ERROR) << "Failed to invoke the callback";
+                }
+            }
+        };
+
+    callback_handlers.on_event_followup =
+        [weak_ptr_this](const legacy_hal::NanFollowupInd& msg) {
+            const auto shared_ptr_this = weak_ptr_this.promote();
+            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                LOG(ERROR) << "Callback invoked on an invalid object";
+                return;
+            }
+            NanFollowupReceivedInd hidl_struct;
+            if (!hidl_struct_util::convertLegacyNanFollowupIndToHidl(
+                    msg, &hidl_struct)) {
+                LOG(ERROR) << "Failed to convert nan capabilities response";
+                return;
+            }
+
+            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                if (!callback->eventFollowupReceived(hidl_struct).isOk()) {
+                    LOG(ERROR) << "Failed to invoke the callback";
+                }
+            }
+        };
+
+    callback_handlers.on_event_transmit_follow_up =
+        [weak_ptr_this](const legacy_hal::NanTransmitFollowupInd& msg) {
+            const auto shared_ptr_this = weak_ptr_this.promote();
+            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                LOG(ERROR) << "Callback invoked on an invalid object";
+                return;
+            }
+            WifiNanStatus status;
+            hidl_struct_util::convertToWifiNanStatus(
+                msg.reason, msg.nan_reason, sizeof(msg.nan_reason), &status);
+
+            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                if (!callback->eventTransmitFollowup(msg.id, status).isOk()) {
+                    LOG(ERROR) << "Failed to invoke the callback";
+                }
+            }
+        };
+
+    callback_handlers.on_event_data_path_request =
+        [weak_ptr_this](const legacy_hal::NanDataPathRequestInd& msg) {
+            const auto shared_ptr_this = weak_ptr_this.promote();
+            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                LOG(ERROR) << "Callback invoked on an invalid object";
+                return;
+            }
+            NanDataPathRequestInd hidl_struct;
+            if (!hidl_struct_util::convertLegacyNanDataPathRequestIndToHidl(
+                    msg, &hidl_struct)) {
+                LOG(ERROR) << "Failed to convert nan capabilities response";
+                return;
+            }
+
+            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                if (!callback->eventDataPathRequest(hidl_struct).isOk()) {
+                    LOG(ERROR) << "Failed to invoke the callback";
+                }
+            }
+        };
+
+    callback_handlers.on_event_data_path_confirm =
+        [weak_ptr_this](const legacy_hal::NanDataPathConfirmInd& msg) {
+            const auto shared_ptr_this = weak_ptr_this.promote();
+            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                LOG(ERROR) << "Callback invoked on an invalid object";
+                return;
+            }
+            V1_2::NanDataPathConfirmInd hidl_struct;
+            if (!hidl_struct_util::convertLegacyNanDataPathConfirmIndToHidl(
+                    msg, &hidl_struct)) {
+                LOG(ERROR) << "Failed to convert nan capabilities response";
+                return;
+            }
+
+            for (const auto& callback :
+                 shared_ptr_this->getEventCallbacks_1_2()) {
+                if (!callback->eventDataPathConfirm_1_2(hidl_struct).isOk()) {
+                    LOG(ERROR) << "Failed to invoke the callback";
+                }
+            }
+        };
+
+    callback_handlers.on_event_data_path_end =
+        [weak_ptr_this](const legacy_hal::NanDataPathEndInd& msg) {
+            const auto shared_ptr_this = weak_ptr_this.promote();
+            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                LOG(ERROR) << "Callback invoked on an invalid object";
+                return;
+            }
+            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                for (int i = 0; i < msg.num_ndp_instances; ++i) {
+                    if (!callback
+                             ->eventDataPathTerminated(msg.ndp_instance_id[i])
+                             .isOk()) {
+                        LOG(ERROR) << "Failed to invoke the callback";
+                    }
+                }
+            }
+        };
+
+    callback_handlers.on_event_beacon_sdf_payload =
+        [weak_ptr_this](const legacy_hal::NanBeaconSdfPayloadInd& /* msg */) {
+            LOG(ERROR) << "on_event_beacon_sdf_payload - should not be called";
+        };
+
+    callback_handlers.on_event_range_request =
+        [weak_ptr_this](const legacy_hal::NanRangeRequestInd& /* msg */) {
+            LOG(ERROR) << "on_event_range_request - should not be called";
+        };
+
+    callback_handlers.on_event_range_report =
+        [weak_ptr_this](const legacy_hal::NanRangeReportInd& /* msg */) {
+            LOG(ERROR) << "on_event_range_report - should not be called";
+        };
+
+    callback_handlers
+        .on_event_schedule_update = [weak_ptr_this](
+                                        const legacy_hal::
+                                            NanDataPathScheduleUpdateInd& msg) {
+        const auto shared_ptr_this = weak_ptr_this.promote();
+        if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+            LOG(ERROR) << "Callback invoked on an invalid object";
+            return;
+        }
+        V1_2::NanDataPathScheduleUpdateInd hidl_struct;
+        if (!hidl_struct_util::convertLegacyNanDataPathScheduleUpdateIndToHidl(
+                msg, &hidl_struct)) {
+            LOG(ERROR) << "Failed to convert nan capabilities response";
+            return;
+        }
+
+        for (const auto& callback : shared_ptr_this->getEventCallbacks_1_2()) {
+            if (!callback->eventDataPathScheduleUpdate(hidl_struct).isOk()) {
+                LOG(ERROR) << "Failed to invoke the callback";
+            }
+        }
+    };
+
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->nanRegisterCallbackHandlers(ifname_,
+                                                        callback_handlers);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        LOG(ERROR) << "Failed to register nan callbacks. Invalidating object";
+        invalidate();
+    }
+
+    // Register for iface state toggle events.
+    iface_util::IfaceEventHandlers event_handlers = {};
+    event_handlers.on_state_toggle_off_on =
+        [weak_ptr_this](const std::string& /* iface_name */) {
+            const auto shared_ptr_this = weak_ptr_this.promote();
+            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                LOG(ERROR) << "Callback invoked on an invalid object";
+                return;
+            }
+            // Tell framework that NAN has been disabled.
+            WifiNanStatus status = {
+                NanStatusType::UNSUPPORTED_CONCURRENCY_NAN_DISABLED, ""};
+            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                if (!callback->eventDisabled(status).isOk()) {
+                    LOG(ERROR) << "Failed to invoke the callback";
+                }
+            }
+        };
+    iface_util_.lock()->registerIfaceEventHandlers(ifname_, event_handlers);
+}
+
+void WifiNanIface::invalidate() {
+    // send commands to HAL to actually disable and destroy interfaces
+    legacy_hal_.lock()->nanDisableRequest(ifname_, 0xFFFF);
+    legacy_hal_.lock()->nanDataInterfaceDelete(ifname_, 0xFFFE, "aware_data0");
+    legacy_hal_.lock()->nanDataInterfaceDelete(ifname_, 0xFFFD, "aware_data1");
+    iface_util_.lock()->unregisterIfaceEventHandlers(ifname_);
+    legacy_hal_.reset();
+    event_cb_handler_.invalidate();
+    event_cb_handler_1_2_.invalidate();
+    is_valid_ = false;
+}
+
+bool WifiNanIface::isValid() { return is_valid_; }
+
+std::string WifiNanIface::getName() { return ifname_; }
+
+std::set<sp<V1_0::IWifiNanIfaceEventCallback>>
+WifiNanIface::getEventCallbacks() {
+    return event_cb_handler_.getCallbacks();
+}
+
+std::set<sp<V1_2::IWifiNanIfaceEventCallback>>
+WifiNanIface::getEventCallbacks_1_2() {
+    return event_cb_handler_1_2_.getCallbacks();
+}
+
+Return<void> WifiNanIface::getName(getName_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::getNameInternal, hidl_status_cb);
+}
+
+Return<void> WifiNanIface::getType(getType_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::getTypeInternal, hidl_status_cb);
+}
+
+Return<void> WifiNanIface::registerEventCallback(
+    const sp<V1_0::IWifiNanIfaceEventCallback>& callback,
+    registerEventCallback_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::registerEventCallbackInternal,
+                           hidl_status_cb, callback);
+}
+
+Return<void> WifiNanIface::getCapabilitiesRequest(
+    uint16_t cmd_id, getCapabilitiesRequest_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::getCapabilitiesRequestInternal,
+                           hidl_status_cb, cmd_id);
+}
+
+Return<void> WifiNanIface::enableRequest(uint16_t cmd_id,
+                                         const V1_0::NanEnableRequest& msg,
+                                         enableRequest_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::enableRequestInternal, hidl_status_cb,
+                           cmd_id, msg);
+}
+
+Return<void> WifiNanIface::configRequest(uint16_t cmd_id,
+                                         const V1_0::NanConfigRequest& msg,
+                                         configRequest_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::configRequestInternal, hidl_status_cb,
+                           cmd_id, msg);
+}
+
+Return<void> WifiNanIface::disableRequest(uint16_t cmd_id,
+                                          disableRequest_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::disableRequestInternal,
+                           hidl_status_cb, cmd_id);
+}
+
+Return<void> WifiNanIface::startPublishRequest(
+    uint16_t cmd_id, const NanPublishRequest& msg,
+    startPublishRequest_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::startPublishRequestInternal,
+                           hidl_status_cb, cmd_id, msg);
+}
+
+Return<void> WifiNanIface::stopPublishRequest(
+    uint16_t cmd_id, uint8_t sessionId, stopPublishRequest_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::stopPublishRequestInternal,
+                           hidl_status_cb, cmd_id, sessionId);
+}
+
+Return<void> WifiNanIface::startSubscribeRequest(
+    uint16_t cmd_id, const NanSubscribeRequest& msg,
+    startSubscribeRequest_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::startSubscribeRequestInternal,
+                           hidl_status_cb, cmd_id, msg);
+}
+
+Return<void> WifiNanIface::stopSubscribeRequest(
+    uint16_t cmd_id, uint8_t sessionId,
+    stopSubscribeRequest_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::stopSubscribeRequestInternal,
+                           hidl_status_cb, cmd_id, sessionId);
+}
+
+Return<void> WifiNanIface::transmitFollowupRequest(
+    uint16_t cmd_id, const NanTransmitFollowupRequest& msg,
+    transmitFollowupRequest_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::transmitFollowupRequestInternal,
+                           hidl_status_cb, cmd_id, msg);
+}
+
+Return<void> WifiNanIface::createDataInterfaceRequest(
+    uint16_t cmd_id, const hidl_string& iface_name,
+    createDataInterfaceRequest_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::createDataInterfaceRequestInternal,
+                           hidl_status_cb, cmd_id, iface_name);
+}
+
+Return<void> WifiNanIface::deleteDataInterfaceRequest(
+    uint16_t cmd_id, const hidl_string& iface_name,
+    deleteDataInterfaceRequest_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::deleteDataInterfaceRequestInternal,
+                           hidl_status_cb, cmd_id, iface_name);
+}
+
+Return<void> WifiNanIface::initiateDataPathRequest(
+    uint16_t cmd_id, const NanInitiateDataPathRequest& msg,
+    initiateDataPathRequest_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::initiateDataPathRequestInternal,
+                           hidl_status_cb, cmd_id, msg);
+}
+
+Return<void> WifiNanIface::respondToDataPathIndicationRequest(
+    uint16_t cmd_id, const NanRespondToDataPathIndicationRequest& msg,
+    respondToDataPathIndicationRequest_cb hidl_status_cb) {
+    return validateAndCall(
+        this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+        &WifiNanIface::respondToDataPathIndicationRequestInternal,
+        hidl_status_cb, cmd_id, msg);
+}
+
+Return<void> WifiNanIface::terminateDataPathRequest(
+    uint16_t cmd_id, uint32_t ndpInstanceId,
+    terminateDataPathRequest_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::terminateDataPathRequestInternal,
+                           hidl_status_cb, cmd_id, ndpInstanceId);
+}
+
+Return<void> WifiNanIface::registerEventCallback_1_2(
+    const sp<V1_2::IWifiNanIfaceEventCallback>& callback,
+    registerEventCallback_1_2_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::registerEventCallback_1_2Internal,
+                           hidl_status_cb, callback);
+}
+
+Return<void> WifiNanIface::enableRequest_1_2(
+    uint16_t cmd_id, const V1_0::NanEnableRequest& msg1,
+    const V1_2::NanConfigRequestSupplemental& msg2,
+    enableRequest_1_2_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::enableRequest_1_2Internal,
+                           hidl_status_cb, cmd_id, msg1, msg2);
+}
+
+Return<void> WifiNanIface::configRequest_1_2(
+    uint16_t cmd_id, const V1_0::NanConfigRequest& msg1,
+    const V1_2::NanConfigRequestSupplemental& msg2,
+    configRequest_1_2_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::configRequest_1_2Internal,
+                           hidl_status_cb, cmd_id, msg1, msg2);
+}
+
+Return<void> WifiNanIface::enableRequest_1_4(
+    uint16_t cmd_id, const NanEnableRequest& msg1,
+    const V1_2::NanConfigRequestSupplemental& msg2,
+    enableRequest_1_4_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::enableRequest_1_4Internal,
+                           hidl_status_cb, cmd_id, msg1, msg2);
+}
+
+Return<void> WifiNanIface::configRequest_1_4(
+    uint16_t cmd_id, const NanConfigRequest& msg1,
+    const V1_2::NanConfigRequestSupplemental& msg2,
+    configRequest_1_4_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiNanIface::configRequest_1_4Internal,
+                           hidl_status_cb, cmd_id, msg1, msg2);
+}
+
+std::pair<WifiStatus, std::string> WifiNanIface::getNameInternal() {
+    return {createWifiStatus(WifiStatusCode::SUCCESS), ifname_};
+}
+
+std::pair<WifiStatus, IfaceType> WifiNanIface::getTypeInternal() {
+    return {createWifiStatus(WifiStatusCode::SUCCESS), IfaceType::NAN};
+}
+
+WifiStatus WifiNanIface::registerEventCallbackInternal(
+    const sp<V1_0::IWifiNanIfaceEventCallback>& callback) {
+    if (!event_cb_handler_.addCallback(callback)) {
+        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+    }
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+WifiStatus WifiNanIface::getCapabilitiesRequestInternal(uint16_t cmd_id) {
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->nanGetCapabilities(ifname_, cmd_id);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiNanIface::enableRequestInternal(
+    uint16_t /* cmd_id */, const V1_0::NanEnableRequest& /* msg */) {
+    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
+}
+
+WifiStatus WifiNanIface::configRequestInternal(
+    uint16_t /* cmd_id */, const V1_0::NanConfigRequest& /* msg */) {
+    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
+}
+
+WifiStatus WifiNanIface::disableRequestInternal(uint16_t cmd_id) {
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->nanDisableRequest(ifname_, cmd_id);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiNanIface::startPublishRequestInternal(
+    uint16_t cmd_id, const NanPublishRequest& msg) {
+    legacy_hal::NanPublishRequest legacy_msg;
+    if (!hidl_struct_util::convertHidlNanPublishRequestToLegacy(msg,
+                                                                &legacy_msg)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->nanPublishRequest(ifname_, cmd_id, legacy_msg);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiNanIface::stopPublishRequestInternal(uint16_t cmd_id,
+                                                    uint8_t sessionId) {
+    legacy_hal::NanPublishCancelRequest legacy_msg;
+    legacy_msg.publish_id = sessionId;
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->nanPublishCancelRequest(ifname_, cmd_id,
+                                                    legacy_msg);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiNanIface::startSubscribeRequestInternal(
+    uint16_t cmd_id, const NanSubscribeRequest& msg) {
+    legacy_hal::NanSubscribeRequest legacy_msg;
+    if (!hidl_struct_util::convertHidlNanSubscribeRequestToLegacy(
+            msg, &legacy_msg)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->nanSubscribeRequest(ifname_, cmd_id, legacy_msg);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiNanIface::stopSubscribeRequestInternal(uint16_t cmd_id,
+                                                      uint8_t sessionId) {
+    legacy_hal::NanSubscribeCancelRequest legacy_msg;
+    legacy_msg.subscribe_id = sessionId;
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->nanSubscribeCancelRequest(ifname_, cmd_id,
+                                                      legacy_msg);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiNanIface::transmitFollowupRequestInternal(
+    uint16_t cmd_id, const NanTransmitFollowupRequest& msg) {
+    legacy_hal::NanTransmitFollowupRequest legacy_msg;
+    if (!hidl_struct_util::convertHidlNanTransmitFollowupRequestToLegacy(
+            msg, &legacy_msg)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->nanTransmitFollowupRequest(ifname_, cmd_id,
+                                                       legacy_msg);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiNanIface::createDataInterfaceRequestInternal(
+    uint16_t cmd_id, const std::string& iface_name) {
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->nanDataInterfaceCreate(ifname_, cmd_id, iface_name);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+WifiStatus WifiNanIface::deleteDataInterfaceRequestInternal(
+    uint16_t cmd_id, const std::string& iface_name) {
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->nanDataInterfaceDelete(ifname_, cmd_id, iface_name);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+WifiStatus WifiNanIface::initiateDataPathRequestInternal(
+    uint16_t cmd_id, const NanInitiateDataPathRequest& msg) {
+    legacy_hal::NanDataPathInitiatorRequest legacy_msg;
+    if (!hidl_struct_util::convertHidlNanDataPathInitiatorRequestToLegacy(
+            msg, &legacy_msg)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->nanDataRequestInitiator(ifname_, cmd_id,
+                                                    legacy_msg);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+WifiStatus WifiNanIface::respondToDataPathIndicationRequestInternal(
+    uint16_t cmd_id, const NanRespondToDataPathIndicationRequest& msg) {
+    legacy_hal::NanDataPathIndicationResponse legacy_msg;
+    if (!hidl_struct_util::convertHidlNanDataPathIndicationResponseToLegacy(
+            msg, &legacy_msg)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->nanDataIndicationResponse(ifname_, cmd_id,
+                                                      legacy_msg);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+WifiStatus WifiNanIface::terminateDataPathRequestInternal(
+    uint16_t cmd_id, uint32_t ndpInstanceId) {
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->nanDataEnd(ifname_, cmd_id, ndpInstanceId);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiNanIface::registerEventCallback_1_2Internal(
+    const sp<V1_2::IWifiNanIfaceEventCallback>& callback) {
+    sp<V1_0::IWifiNanIfaceEventCallback> callback_1_0 = callback;
+    if (!event_cb_handler_.addCallback(callback_1_0)) {
+        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+    }
+    if (!event_cb_handler_1_2_.addCallback(callback)) {
+        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+    }
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+WifiStatus WifiNanIface::enableRequest_1_2Internal(
+    uint16_t /* cmd_id */, const V1_0::NanEnableRequest& /* msg1 */,
+    const V1_2::NanConfigRequestSupplemental& /*msg2 */) {
+    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
+}
+
+WifiStatus WifiNanIface::configRequest_1_2Internal(
+    uint16_t /* cmd_id */, const V1_0::NanConfigRequest& /* msg1 */,
+    const V1_2::NanConfigRequestSupplemental& /* msg2 */) {
+    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
+}
+
+WifiStatus WifiNanIface::enableRequest_1_4Internal(
+    uint16_t cmd_id, const NanEnableRequest& msg1,
+    const V1_2::NanConfigRequestSupplemental& msg2) {
+    legacy_hal::NanEnableRequest legacy_msg;
+    if (!hidl_struct_util::convertHidlNanEnableRequest_1_4ToLegacy(
+            msg1, msg2, &legacy_msg)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->nanEnableRequest(ifname_, cmd_id, legacy_msg);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiNanIface::configRequest_1_4Internal(
+    uint16_t cmd_id, const NanConfigRequest& msg1,
+    const V1_2::NanConfigRequestSupplemental& msg2) {
+    legacy_hal::NanConfigRequest legacy_msg;
+    if (!hidl_struct_util::convertHidlNanConfigRequest_1_4ToLegacy(
+            msg1, msg2, &legacy_msg)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->nanConfigRequest(ifname_, cmd_id, legacy_msg);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.4/default/wifi_nan_iface.h b/wifi/1.4/default/wifi_nan_iface.h
new file mode 100644
index 0000000..c16628b
--- /dev/null
+++ b/wifi/1.4/default/wifi_nan_iface.h
@@ -0,0 +1,185 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef WIFI_NAN_IFACE_H_
+#define WIFI_NAN_IFACE_H_
+
+#include <android-base/macros.h>
+#include <android/hardware/wifi/1.0/IWifiNanIfaceEventCallback.h>
+#include <android/hardware/wifi/1.4/IWifiNanIface.h>
+
+#include "hidl_callback_util.h"
+#include "wifi_iface_util.h"
+#include "wifi_legacy_hal.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+using namespace android::hardware::wifi::V1_0;
+using namespace android::hardware::wifi::V1_2;
+
+/**
+ * HIDL interface object used to control a NAN Iface instance.
+ */
+class WifiNanIface : public V1_4::IWifiNanIface {
+   public:
+    WifiNanIface(const std::string& ifname,
+                 const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
+                 const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util);
+    // Refer to |WifiChip::invalidate()|.
+    void invalidate();
+    bool isValid();
+    std::string getName();
+
+    // HIDL methods exposed.
+    Return<void> getName(getName_cb hidl_status_cb) override;
+    Return<void> getType(getType_cb hidl_status_cb) override;
+    Return<void> registerEventCallback(
+        const sp<V1_0::IWifiNanIfaceEventCallback>& callback,
+        registerEventCallback_cb hidl_status_cb) override;
+    Return<void> getCapabilitiesRequest(
+        uint16_t cmd_id, getCapabilitiesRequest_cb hidl_status_cb) override;
+    Return<void> enableRequest(uint16_t cmd_id,
+                               const V1_0::NanEnableRequest& msg,
+                               enableRequest_cb hidl_status_cb) override;
+    Return<void> configRequest(uint16_t cmd_id,
+                               const V1_0::NanConfigRequest& msg,
+                               configRequest_cb hidl_status_cb) override;
+    Return<void> disableRequest(uint16_t cmd_id,
+                                disableRequest_cb hidl_status_cb) override;
+    Return<void> startPublishRequest(
+        uint16_t cmd_id, const NanPublishRequest& msg,
+        startPublishRequest_cb hidl_status_cb) override;
+    Return<void> stopPublishRequest(
+        uint16_t cmd_id, uint8_t sessionId,
+        stopPublishRequest_cb hidl_status_cb) override;
+    Return<void> startSubscribeRequest(
+        uint16_t cmd_id, const NanSubscribeRequest& msg,
+        startSubscribeRequest_cb hidl_status_cb) override;
+    Return<void> stopSubscribeRequest(
+        uint16_t cmd_id, uint8_t sessionId,
+        stopSubscribeRequest_cb hidl_status_cb) override;
+    Return<void> transmitFollowupRequest(
+        uint16_t cmd_id, const NanTransmitFollowupRequest& msg,
+        transmitFollowupRequest_cb hidl_status_cb) override;
+    Return<void> createDataInterfaceRequest(
+        uint16_t cmd_id, const hidl_string& iface_name,
+        createDataInterfaceRequest_cb hidl_status_cb) override;
+    Return<void> deleteDataInterfaceRequest(
+        uint16_t cmd_id, const hidl_string& iface_name,
+        deleteDataInterfaceRequest_cb hidl_status_cb) override;
+    Return<void> initiateDataPathRequest(
+        uint16_t cmd_id, const NanInitiateDataPathRequest& msg,
+        initiateDataPathRequest_cb hidl_status_cb) override;
+    Return<void> respondToDataPathIndicationRequest(
+        uint16_t cmd_id, const NanRespondToDataPathIndicationRequest& msg,
+        respondToDataPathIndicationRequest_cb hidl_status_cb) override;
+    Return<void> terminateDataPathRequest(
+        uint16_t cmd_id, uint32_t ndpInstanceId,
+        terminateDataPathRequest_cb hidl_status_cb) override;
+
+    Return<void> registerEventCallback_1_2(
+        const sp<V1_2::IWifiNanIfaceEventCallback>& callback,
+        registerEventCallback_1_2_cb hidl_status_cb) override;
+    Return<void> enableRequest_1_2(
+        uint16_t cmd_id, const V1_0::NanEnableRequest& msg1,
+        const V1_2::NanConfigRequestSupplemental& msg2,
+        enableRequest_1_2_cb hidl_status_cb) override;
+    Return<void> configRequest_1_2(
+        uint16_t cmd_id, const V1_0::NanConfigRequest& msg1,
+        const V1_2::NanConfigRequestSupplemental& msg2,
+        configRequest_1_2_cb hidl_status_cb) override;
+    Return<void> enableRequest_1_4(
+        uint16_t cmd_id, const NanEnableRequest& msg1,
+        const V1_2::NanConfigRequestSupplemental& msg2,
+        enableRequest_1_2_cb hidl_status_cb) override;
+    Return<void> configRequest_1_4(
+        uint16_t cmd_id, const NanConfigRequest& msg1,
+        const V1_2::NanConfigRequestSupplemental& msg2,
+        configRequest_1_2_cb hidl_status_cb) override;
+
+   private:
+    // Corresponding worker functions for the HIDL methods.
+    std::pair<WifiStatus, std::string> getNameInternal();
+    std::pair<WifiStatus, IfaceType> getTypeInternal();
+    WifiStatus registerEventCallbackInternal(
+        const sp<V1_0::IWifiNanIfaceEventCallback>& callback);
+    WifiStatus getCapabilitiesRequestInternal(uint16_t cmd_id);
+    WifiStatus enableRequestInternal(uint16_t cmd_id,
+                                     const V1_0::NanEnableRequest& msg);
+    WifiStatus configRequestInternal(uint16_t cmd_id,
+                                     const V1_0::NanConfigRequest& msg);
+    WifiStatus disableRequestInternal(uint16_t cmd_id);
+    WifiStatus startPublishRequestInternal(uint16_t cmd_id,
+                                           const NanPublishRequest& msg);
+    WifiStatus stopPublishRequestInternal(uint16_t cmd_id, uint8_t sessionId);
+    WifiStatus startSubscribeRequestInternal(uint16_t cmd_id,
+                                             const NanSubscribeRequest& msg);
+    WifiStatus stopSubscribeRequestInternal(uint16_t cmd_id, uint8_t sessionId);
+    WifiStatus transmitFollowupRequestInternal(
+        uint16_t cmd_id, const NanTransmitFollowupRequest& msg);
+    WifiStatus createDataInterfaceRequestInternal(
+        uint16_t cmd_id, const std::string& iface_name);
+    WifiStatus deleteDataInterfaceRequestInternal(
+        uint16_t cmd_id, const std::string& iface_name);
+    WifiStatus initiateDataPathRequestInternal(
+        uint16_t cmd_id, const NanInitiateDataPathRequest& msg);
+    WifiStatus respondToDataPathIndicationRequestInternal(
+        uint16_t cmd_id, const NanRespondToDataPathIndicationRequest& msg);
+    WifiStatus terminateDataPathRequestInternal(uint16_t cmd_id,
+                                                uint32_t ndpInstanceId);
+
+    WifiStatus registerEventCallback_1_2Internal(
+        const sp<V1_2::IWifiNanIfaceEventCallback>& callback);
+    WifiStatus enableRequest_1_2Internal(
+        uint16_t cmd_id, const V1_0::NanEnableRequest& msg1,
+        const V1_2::NanConfigRequestSupplemental& msg2);
+    WifiStatus configRequest_1_2Internal(
+        uint16_t cmd_id, const V1_0::NanConfigRequest& msg,
+        const V1_2::NanConfigRequestSupplemental& msg2);
+    WifiStatus enableRequest_1_4Internal(
+        uint16_t cmd_id, const NanEnableRequest& msg1,
+        const V1_2::NanConfigRequestSupplemental& msg2);
+    WifiStatus configRequest_1_4Internal(
+        uint16_t cmd_id, const NanConfigRequest& msg,
+        const V1_2::NanConfigRequestSupplemental& msg2);
+
+    // all 1_0 and descendant callbacks
+    std::set<sp<V1_0::IWifiNanIfaceEventCallback>> getEventCallbacks();
+    // all 1_2 and descendant callbacks
+    std::set<sp<V1_2::IWifiNanIfaceEventCallback>> getEventCallbacks_1_2();
+
+    std::string ifname_;
+    std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
+    std::weak_ptr<iface_util::WifiIfaceUtil> iface_util_;
+    bool is_valid_;
+    hidl_callback_util::HidlCallbackHandler<V1_0::IWifiNanIfaceEventCallback>
+        event_cb_handler_;
+    hidl_callback_util::HidlCallbackHandler<V1_2::IWifiNanIfaceEventCallback>
+        event_cb_handler_1_2_;
+
+    DISALLOW_COPY_AND_ASSIGN(WifiNanIface);
+};
+
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // WIFI_NAN_IFACE_H_
diff --git a/wifi/1.4/default/wifi_p2p_iface.cpp b/wifi/1.4/default/wifi_p2p_iface.cpp
new file mode 100644
index 0000000..9e7341f
--- /dev/null
+++ b/wifi/1.4/default/wifi_p2p_iface.cpp
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+
+#include "hidl_return_util.h"
+#include "wifi_p2p_iface.h"
+#include "wifi_status_util.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+using hidl_return_util::validateAndCall;
+
+WifiP2pIface::WifiP2pIface(
+    const std::string& ifname,
+    const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal)
+    : ifname_(ifname), legacy_hal_(legacy_hal), is_valid_(true) {}
+
+void WifiP2pIface::invalidate() {
+    legacy_hal_.reset();
+    is_valid_ = false;
+}
+
+bool WifiP2pIface::isValid() { return is_valid_; }
+
+std::string WifiP2pIface::getName() { return ifname_; }
+
+Return<void> WifiP2pIface::getName(getName_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiP2pIface::getNameInternal, hidl_status_cb);
+}
+
+Return<void> WifiP2pIface::getType(getType_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiP2pIface::getTypeInternal, hidl_status_cb);
+}
+
+std::pair<WifiStatus, std::string> WifiP2pIface::getNameInternal() {
+    return {createWifiStatus(WifiStatusCode::SUCCESS), ifname_};
+}
+
+std::pair<WifiStatus, IfaceType> WifiP2pIface::getTypeInternal() {
+    return {createWifiStatus(WifiStatusCode::SUCCESS), IfaceType::P2P};
+}
+
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.4/default/wifi_p2p_iface.h b/wifi/1.4/default/wifi_p2p_iface.h
new file mode 100644
index 0000000..a6fc59d
--- /dev/null
+++ b/wifi/1.4/default/wifi_p2p_iface.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef WIFI_P2P_IFACE_H_
+#define WIFI_P2P_IFACE_H_
+
+#include <android-base/macros.h>
+#include <android/hardware/wifi/1.0/IWifiP2pIface.h>
+
+#include "wifi_legacy_hal.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+using namespace android::hardware::wifi::V1_0;
+
+/**
+ * HIDL interface object used to control a P2P Iface instance.
+ */
+class WifiP2pIface : public V1_0::IWifiP2pIface {
+   public:
+    WifiP2pIface(const std::string& ifname,
+                 const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal);
+    // Refer to |WifiChip::invalidate()|.
+    void invalidate();
+    bool isValid();
+    std::string getName();
+
+    // HIDL methods exposed.
+    Return<void> getName(getName_cb hidl_status_cb) override;
+    Return<void> getType(getType_cb hidl_status_cb) override;
+
+   private:
+    // Corresponding worker functions for the HIDL methods.
+    std::pair<WifiStatus, std::string> getNameInternal();
+    std::pair<WifiStatus, IfaceType> getTypeInternal();
+
+    std::string ifname_;
+    std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
+    bool is_valid_;
+
+    DISALLOW_COPY_AND_ASSIGN(WifiP2pIface);
+};
+
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // WIFI_P2P_IFACE_H_
diff --git a/wifi/1.4/default/wifi_rtt_controller.cpp b/wifi/1.4/default/wifi_rtt_controller.cpp
new file mode 100644
index 0000000..594a116
--- /dev/null
+++ b/wifi/1.4/default/wifi_rtt_controller.cpp
@@ -0,0 +1,351 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+
+#include "hidl_return_util.h"
+#include "hidl_struct_util.h"
+#include "wifi_rtt_controller.h"
+#include "wifi_status_util.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+using hidl_return_util::validateAndCall;
+
+WifiRttController::WifiRttController(
+    const std::string& iface_name, const sp<IWifiIface>& bound_iface,
+    const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal)
+    : ifname_(iface_name),
+      bound_iface_(bound_iface),
+      legacy_hal_(legacy_hal),
+      is_valid_(true) {}
+
+void WifiRttController::invalidate() {
+    legacy_hal_.reset();
+    event_callbacks_.clear();
+    is_valid_ = false;
+}
+
+bool WifiRttController::isValid() { return is_valid_; }
+
+std::vector<sp<IWifiRttControllerEventCallback>>
+WifiRttController::getEventCallbacks() {
+    return event_callbacks_;
+}
+
+std::string WifiRttController::getIfaceName() { return ifname_; }
+
+Return<void> WifiRttController::getBoundIface(getBoundIface_cb hidl_status_cb) {
+    return validateAndCall(
+        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+        &WifiRttController::getBoundIfaceInternal, hidl_status_cb);
+}
+
+Return<void> WifiRttController::registerEventCallback(
+    const sp<V1_0::IWifiRttControllerEventCallback>& callback,
+    registerEventCallback_cb hidl_status_cb) {
+    return validateAndCall(this,
+                           WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+                           &WifiRttController::registerEventCallbackInternal,
+                           hidl_status_cb, callback);
+}
+
+Return<void> WifiRttController::rangeRequest(
+    uint32_t cmd_id, const hidl_vec<V1_0::RttConfig>& rtt_configs,
+    rangeRequest_cb hidl_status_cb) {
+    return validateAndCall(this,
+                           WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+                           &WifiRttController::rangeRequestInternal,
+                           hidl_status_cb, cmd_id, rtt_configs);
+}
+
+Return<void> WifiRttController::rangeCancel(
+    uint32_t cmd_id, const hidl_vec<hidl_array<uint8_t, 6>>& addrs,
+    rangeCancel_cb hidl_status_cb) {
+    return validateAndCall(
+        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+        &WifiRttController::rangeCancelInternal, hidl_status_cb, cmd_id, addrs);
+}
+
+Return<void> WifiRttController::getCapabilities(
+    getCapabilities_cb hidl_status_cb) {
+    return validateAndCall(
+        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+        &WifiRttController::getCapabilitiesInternal, hidl_status_cb);
+}
+
+Return<void> WifiRttController::setLci(uint32_t cmd_id,
+                                       const RttLciInformation& lci,
+                                       setLci_cb hidl_status_cb) {
+    return validateAndCall(
+        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+        &WifiRttController::setLciInternal, hidl_status_cb, cmd_id, lci);
+}
+
+Return<void> WifiRttController::setLcr(uint32_t cmd_id,
+                                       const RttLcrInformation& lcr,
+                                       setLcr_cb hidl_status_cb) {
+    return validateAndCall(
+        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+        &WifiRttController::setLcrInternal, hidl_status_cb, cmd_id, lcr);
+}
+
+Return<void> WifiRttController::getResponderInfo(
+    getResponderInfo_cb hidl_status_cb) {
+    return validateAndCall(
+        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+        &WifiRttController::getResponderInfoInternal, hidl_status_cb);
+}
+
+Return<void> WifiRttController::enableResponder(
+    uint32_t cmd_id, const WifiChannelInfo& channel_hint,
+    uint32_t max_duration_seconds, const V1_0::RttResponder& info,
+    enableResponder_cb hidl_status_cb) {
+    return validateAndCall(
+        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+        &WifiRttController::enableResponderInternal, hidl_status_cb, cmd_id,
+        channel_hint, max_duration_seconds, info);
+}
+
+Return<void> WifiRttController::disableResponder(
+    uint32_t cmd_id, disableResponder_cb hidl_status_cb) {
+    return validateAndCall(
+        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+        &WifiRttController::disableResponderInternal, hidl_status_cb, cmd_id);
+}
+
+Return<void> WifiRttController::registerEventCallback_1_4(
+    const sp<IWifiRttControllerEventCallback>& callback,
+    registerEventCallback_1_4_cb hidl_status_cb) {
+    return validateAndCall(
+        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+        &WifiRttController::registerEventCallbackInternal_1_4, hidl_status_cb,
+        callback);
+}
+
+Return<void> WifiRttController::rangeRequest_1_4(
+    uint32_t cmd_id, const hidl_vec<RttConfig>& rtt_configs,
+    rangeRequest_1_4_cb hidl_status_cb) {
+    return validateAndCall(this,
+                           WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+                           &WifiRttController::rangeRequestInternal_1_4,
+                           hidl_status_cb, cmd_id, rtt_configs);
+}
+
+Return<void> WifiRttController::getCapabilities_1_4(
+    getCapabilities_1_4_cb hidl_status_cb) {
+    return validateAndCall(
+        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+        &WifiRttController::getCapabilitiesInternal_1_4, hidl_status_cb);
+}
+
+Return<void> WifiRttController::getResponderInfo_1_4(
+    getResponderInfo_1_4_cb hidl_status_cb) {
+    return validateAndCall(
+        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+        &WifiRttController::getResponderInfoInternal_1_4, hidl_status_cb);
+}
+
+Return<void> WifiRttController::enableResponder_1_4(
+    uint32_t cmd_id, const WifiChannelInfo& channel_hint,
+    uint32_t max_duration_seconds, const RttResponder& info,
+    enableResponder_1_4_cb hidl_status_cb) {
+    return validateAndCall(
+        this, WifiStatusCode::ERROR_WIFI_RTT_CONTROLLER_INVALID,
+        &WifiRttController::enableResponderInternal_1_4, hidl_status_cb, cmd_id,
+        channel_hint, max_duration_seconds, info);
+}
+
+std::pair<WifiStatus, sp<IWifiIface>>
+WifiRttController::getBoundIfaceInternal() {
+    return {createWifiStatus(WifiStatusCode::SUCCESS), bound_iface_};
+}
+
+WifiStatus WifiRttController::registerEventCallbackInternal(
+    const sp<V1_0::IWifiRttControllerEventCallback>& /* callback */) {
+    // Deprecated support for this api
+    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
+}
+
+WifiStatus WifiRttController::rangeRequestInternal(
+    uint32_t /* cmd_id */,
+    const std::vector<V1_0::RttConfig>& /* rtt_configs */) {
+    // Deprecated support for this api
+    return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED);
+}
+
+WifiStatus WifiRttController::rangeCancelInternal(
+    uint32_t cmd_id, const std::vector<hidl_array<uint8_t, 6>>& addrs) {
+    std::vector<std::array<uint8_t, 6>> legacy_addrs;
+    for (const auto& addr : addrs) {
+        legacy_addrs.push_back(addr);
+    }
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->cancelRttRangeRequest(ifname_, cmd_id,
+                                                  legacy_addrs);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+std::pair<WifiStatus, V1_0::RttCapabilities>
+WifiRttController::getCapabilitiesInternal() {
+    // Deprecated support for this api
+    return {createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED), {}};
+}
+
+WifiStatus WifiRttController::setLciInternal(uint32_t cmd_id,
+                                             const RttLciInformation& lci) {
+    legacy_hal::wifi_lci_information legacy_lci;
+    if (!hidl_struct_util::convertHidlRttLciInformationToLegacy(lci,
+                                                                &legacy_lci)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->setRttLci(ifname_, cmd_id, legacy_lci);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiRttController::setLcrInternal(uint32_t cmd_id,
+                                             const RttLcrInformation& lcr) {
+    legacy_hal::wifi_lcr_information legacy_lcr;
+    if (!hidl_struct_util::convertHidlRttLcrInformationToLegacy(lcr,
+                                                                &legacy_lcr)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->setRttLcr(ifname_, cmd_id, legacy_lcr);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+std::pair<WifiStatus, V1_0::RttResponder>
+WifiRttController::getResponderInfoInternal() {
+    // Deprecated support for this api
+    return {createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED), {}};
+}
+
+WifiStatus WifiRttController::enableResponderInternal(
+    uint32_t /* cmd_id */, const WifiChannelInfo& /* channel_hint */,
+    uint32_t /* max_duration_seconds */, const V1_0::RttResponder& /* info */) {
+    // Deprecated support for this api
+    return {createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED)};
+}
+
+WifiStatus WifiRttController::disableResponderInternal(uint32_t cmd_id) {
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->disableRttResponder(ifname_, cmd_id);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiRttController::registerEventCallbackInternal_1_4(
+    const sp<IWifiRttControllerEventCallback>& callback) {
+    // TODO(b/31632518): remove the callback when the client is destroyed
+    event_callbacks_.emplace_back(callback);
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+WifiStatus WifiRttController::rangeRequestInternal_1_4(
+    uint32_t cmd_id, const std::vector<RttConfig>& rtt_configs) {
+    std::vector<legacy_hal::wifi_rtt_config> legacy_configs;
+    if (!hidl_struct_util::convertHidlVectorOfRttConfigToLegacy(
+            rtt_configs, &legacy_configs)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    android::wp<WifiRttController> weak_ptr_this(this);
+    const auto& on_results_callback =
+        [weak_ptr_this](
+            legacy_hal::wifi_request_id id,
+            const std::vector<const legacy_hal::wifi_rtt_result*>& results) {
+            const auto shared_ptr_this = weak_ptr_this.promote();
+            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                LOG(ERROR) << "Callback invoked on an invalid object";
+                return;
+            }
+            std::vector<RttResult> hidl_results;
+            if (!hidl_struct_util::convertLegacyVectorOfRttResultToHidl(
+                    results, &hidl_results)) {
+                LOG(ERROR) << "Failed to convert rtt results to HIDL structs";
+                return;
+            }
+            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                callback->onResults_1_4(id, hidl_results);
+            }
+        };
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->startRttRangeRequest(
+            ifname_, cmd_id, legacy_configs, on_results_callback);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+std::pair<WifiStatus, RttCapabilities>
+WifiRttController::getCapabilitiesInternal_1_4() {
+    legacy_hal::wifi_error legacy_status;
+    legacy_hal::wifi_rtt_capabilities legacy_caps;
+    std::tie(legacy_status, legacy_caps) =
+        legacy_hal_.lock()->getRttCapabilities(ifname_);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        return {createWifiStatusFromLegacyError(legacy_status), {}};
+    }
+    RttCapabilities hidl_caps;
+    if (!hidl_struct_util::convertLegacyRttCapabilitiesToHidl(legacy_caps,
+                                                              &hidl_caps)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
+}
+
+std::pair<WifiStatus, RttResponder>
+WifiRttController::getResponderInfoInternal_1_4() {
+    legacy_hal::wifi_error legacy_status;
+    legacy_hal::wifi_rtt_responder legacy_responder;
+    std::tie(legacy_status, legacy_responder) =
+        legacy_hal_.lock()->getRttResponderInfo(ifname_);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        return {createWifiStatusFromLegacyError(legacy_status), {}};
+    }
+    RttResponder hidl_responder;
+    if (!hidl_struct_util::convertLegacyRttResponderToHidl(legacy_responder,
+                                                           &hidl_responder)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_responder};
+}
+
+WifiStatus WifiRttController::enableResponderInternal_1_4(
+    uint32_t cmd_id, const WifiChannelInfo& channel_hint,
+    uint32_t max_duration_seconds, const RttResponder& info) {
+    legacy_hal::wifi_channel_info legacy_channel_info;
+    if (!hidl_struct_util::convertHidlWifiChannelInfoToLegacy(
+            channel_hint, &legacy_channel_info)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    legacy_hal::wifi_rtt_responder legacy_responder;
+    if (!hidl_struct_util::convertHidlRttResponderToLegacy(info,
+                                                           &legacy_responder)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->enableRttResponder(
+            ifname_, cmd_id, legacy_channel_info, max_duration_seconds,
+            legacy_responder);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.4/default/wifi_rtt_controller.h b/wifi/1.4/default/wifi_rtt_controller.h
new file mode 100644
index 0000000..1f12555
--- /dev/null
+++ b/wifi/1.4/default/wifi_rtt_controller.h
@@ -0,0 +1,130 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef WIFI_RTT_CONTROLLER_H_
+#define WIFI_RTT_CONTROLLER_H_
+
+#include <android-base/macros.h>
+#include <android/hardware/wifi/1.0/IWifiIface.h>
+#include <android/hardware/wifi/1.4/IWifiRttController.h>
+#include <android/hardware/wifi/1.4/IWifiRttControllerEventCallback.h>
+
+#include "wifi_legacy_hal.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+
+/**
+ * HIDL interface object used to control all RTT operations.
+ */
+class WifiRttController : public V1_4::IWifiRttController {
+   public:
+    WifiRttController(
+        const std::string& iface_name, const sp<IWifiIface>& bound_iface,
+        const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal);
+    // Refer to |WifiChip::invalidate()|.
+    void invalidate();
+    bool isValid();
+    std::vector<sp<IWifiRttControllerEventCallback>> getEventCallbacks();
+    std::string getIfaceName();
+
+    // HIDL methods exposed.
+    Return<void> getBoundIface(getBoundIface_cb hidl_status_cb) override;
+    Return<void> registerEventCallback(
+        const sp<V1_0::IWifiRttControllerEventCallback>& callback,
+        registerEventCallback_cb hidl_status_cb) override;
+    Return<void> rangeRequest(uint32_t cmd_id,
+                              const hidl_vec<V1_0::RttConfig>& rtt_configs,
+                              rangeRequest_cb hidl_status_cb) override;
+    Return<void> rangeCancel(uint32_t cmd_id,
+                             const hidl_vec<hidl_array<uint8_t, 6>>& addrs,
+                             rangeCancel_cb hidl_status_cb) override;
+    Return<void> getCapabilities(getCapabilities_cb hidl_status_cb) override;
+    Return<void> setLci(uint32_t cmd_id, const RttLciInformation& lci,
+                        setLci_cb hidl_status_cb) override;
+    Return<void> setLcr(uint32_t cmd_id, const RttLcrInformation& lcr,
+                        setLcr_cb hidl_status_cb) override;
+    Return<void> getResponderInfo(getResponderInfo_cb hidl_status_cb) override;
+    Return<void> enableResponder(uint32_t cmd_id,
+                                 const WifiChannelInfo& channel_hint,
+                                 uint32_t max_duration_seconds,
+                                 const V1_0::RttResponder& info,
+                                 enableResponder_cb hidl_status_cb) override;
+    Return<void> disableResponder(uint32_t cmd_id,
+                                  disableResponder_cb hidl_status_cb) override;
+    Return<void> registerEventCallback_1_4(
+        const sp<IWifiRttControllerEventCallback>& callback,
+        registerEventCallback_1_4_cb hidl_status_cb) override;
+    Return<void> rangeRequest_1_4(uint32_t cmd_id,
+                                  const hidl_vec<RttConfig>& rtt_configs,
+                                  rangeRequest_1_4_cb hidl_status_cb) override;
+    Return<void> getCapabilities_1_4(
+        getCapabilities_1_4_cb hidl_status_cb) override;
+    Return<void> getResponderInfo_1_4(
+        getResponderInfo_1_4_cb hidl_status_cb) override;
+    Return<void> enableResponder_1_4(
+        uint32_t cmd_id, const WifiChannelInfo& channel_hint,
+        uint32_t max_duration_seconds, const RttResponder& info,
+        enableResponder_1_4_cb hidl_status_cb) override;
+
+   private:
+    // Corresponding worker functions for the HIDL methods.
+    std::pair<WifiStatus, sp<IWifiIface>> getBoundIfaceInternal();
+    WifiStatus registerEventCallbackInternal(
+        const sp<V1_0::IWifiRttControllerEventCallback>& callback);
+    WifiStatus rangeRequestInternal(
+        uint32_t cmd_id, const std::vector<V1_0::RttConfig>& rtt_configs);
+    WifiStatus rangeCancelInternal(
+        uint32_t cmd_id, const std::vector<hidl_array<uint8_t, 6>>& addrs);
+    std::pair<WifiStatus, V1_0::RttCapabilities> getCapabilitiesInternal();
+    WifiStatus setLciInternal(uint32_t cmd_id, const RttLciInformation& lci);
+    WifiStatus setLcrInternal(uint32_t cmd_id, const RttLcrInformation& lcr);
+    std::pair<WifiStatus, V1_0::RttResponder> getResponderInfoInternal();
+    WifiStatus enableResponderInternal(uint32_t cmd_id,
+                                       const WifiChannelInfo& channel_hint,
+                                       uint32_t max_duration_seconds,
+                                       const V1_0::RttResponder& info);
+    WifiStatus disableResponderInternal(uint32_t cmd_id);
+    WifiStatus registerEventCallbackInternal_1_4(
+        const sp<IWifiRttControllerEventCallback>& callback);
+    WifiStatus rangeRequestInternal_1_4(
+        uint32_t cmd_id, const std::vector<RttConfig>& rtt_configs);
+    std::pair<WifiStatus, RttCapabilities> getCapabilitiesInternal_1_4();
+    std::pair<WifiStatus, RttResponder> getResponderInfoInternal_1_4();
+    WifiStatus enableResponderInternal_1_4(uint32_t cmd_id,
+                                           const WifiChannelInfo& channel_hint,
+                                           uint32_t max_duration_seconds,
+                                           const RttResponder& info);
+
+    std::string ifname_;
+    sp<IWifiIface> bound_iface_;
+    std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
+    std::vector<sp<IWifiRttControllerEventCallback>> event_callbacks_;
+    bool is_valid_;
+
+    DISALLOW_COPY_AND_ASSIGN(WifiRttController);
+};
+
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // WIFI_RTT_CONTROLLER_H_
diff --git a/wifi/1.4/default/wifi_sta_iface.cpp b/wifi/1.4/default/wifi_sta_iface.cpp
new file mode 100644
index 0000000..e2ea6e4
--- /dev/null
+++ b/wifi/1.4/default/wifi_sta_iface.cpp
@@ -0,0 +1,647 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+
+#include "hidl_return_util.h"
+#include "hidl_struct_util.h"
+#include "wifi_sta_iface.h"
+#include "wifi_status_util.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+using hidl_return_util::validateAndCall;
+
+WifiStaIface::WifiStaIface(
+    const std::string& ifname,
+    const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
+    const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util)
+    : ifname_(ifname),
+      legacy_hal_(legacy_hal),
+      iface_util_(iface_util),
+      is_valid_(true) {
+    // Turn on DFS channel usage for STA iface.
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->setDfsFlag(ifname_, true);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        LOG(ERROR)
+            << "Failed to set DFS flag; DFS channels may be unavailable.";
+    }
+}
+
+void WifiStaIface::invalidate() {
+    legacy_hal_.reset();
+    event_cb_handler_.invalidate();
+    is_valid_ = false;
+}
+
+bool WifiStaIface::isValid() { return is_valid_; }
+
+std::string WifiStaIface::getName() { return ifname_; }
+
+std::set<sp<IWifiStaIfaceEventCallback>> WifiStaIface::getEventCallbacks() {
+    return event_cb_handler_.getCallbacks();
+}
+
+Return<void> WifiStaIface::getName(getName_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::getNameInternal, hidl_status_cb);
+}
+
+Return<void> WifiStaIface::getType(getType_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::getTypeInternal, hidl_status_cb);
+}
+
+Return<void> WifiStaIface::registerEventCallback(
+    const sp<IWifiStaIfaceEventCallback>& callback,
+    registerEventCallback_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::registerEventCallbackInternal,
+                           hidl_status_cb, callback);
+}
+
+Return<void> WifiStaIface::getCapabilities(getCapabilities_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::getCapabilitiesInternal,
+                           hidl_status_cb);
+}
+
+Return<void> WifiStaIface::getApfPacketFilterCapabilities(
+    getApfPacketFilterCapabilities_cb hidl_status_cb) {
+    return validateAndCall(
+        this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+        &WifiStaIface::getApfPacketFilterCapabilitiesInternal, hidl_status_cb);
+}
+
+Return<void> WifiStaIface::installApfPacketFilter(
+    uint32_t cmd_id, const hidl_vec<uint8_t>& program,
+    installApfPacketFilter_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::installApfPacketFilterInternal,
+                           hidl_status_cb, cmd_id, program);
+}
+
+Return<void> WifiStaIface::readApfPacketFilterData(
+    readApfPacketFilterData_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::readApfPacketFilterDataInternal,
+                           hidl_status_cb);
+}
+
+Return<void> WifiStaIface::getBackgroundScanCapabilities(
+    getBackgroundScanCapabilities_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::getBackgroundScanCapabilitiesInternal,
+                           hidl_status_cb);
+}
+
+Return<void> WifiStaIface::getValidFrequenciesForBand(
+    V1_0::WifiBand band, getValidFrequenciesForBand_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::getValidFrequenciesForBandInternal,
+                           hidl_status_cb, band);
+}
+
+Return<void> WifiStaIface::startBackgroundScan(
+    uint32_t cmd_id, const StaBackgroundScanParameters& params,
+    startBackgroundScan_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::startBackgroundScanInternal,
+                           hidl_status_cb, cmd_id, params);
+}
+
+Return<void> WifiStaIface::stopBackgroundScan(
+    uint32_t cmd_id, stopBackgroundScan_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::stopBackgroundScanInternal,
+                           hidl_status_cb, cmd_id);
+}
+
+Return<void> WifiStaIface::enableLinkLayerStatsCollection(
+    bool debug, enableLinkLayerStatsCollection_cb hidl_status_cb) {
+    return validateAndCall(
+        this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+        &WifiStaIface::enableLinkLayerStatsCollectionInternal, hidl_status_cb,
+        debug);
+}
+
+Return<void> WifiStaIface::disableLinkLayerStatsCollection(
+    disableLinkLayerStatsCollection_cb hidl_status_cb) {
+    return validateAndCall(
+        this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+        &WifiStaIface::disableLinkLayerStatsCollectionInternal, hidl_status_cb);
+}
+
+Return<void> WifiStaIface::getLinkLayerStats(
+    getLinkLayerStats_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::getLinkLayerStatsInternal,
+                           hidl_status_cb);
+}
+
+Return<void> WifiStaIface::getLinkLayerStats_1_3(
+    getLinkLayerStats_1_3_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::getLinkLayerStatsInternal_1_3,
+                           hidl_status_cb);
+}
+
+Return<void> WifiStaIface::startRssiMonitoring(
+    uint32_t cmd_id, int32_t max_rssi, int32_t min_rssi,
+    startRssiMonitoring_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::startRssiMonitoringInternal,
+                           hidl_status_cb, cmd_id, max_rssi, min_rssi);
+}
+
+Return<void> WifiStaIface::stopRssiMonitoring(
+    uint32_t cmd_id, stopRssiMonitoring_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::stopRssiMonitoringInternal,
+                           hidl_status_cb, cmd_id);
+}
+
+Return<void> WifiStaIface::getRoamingCapabilities(
+    getRoamingCapabilities_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::getRoamingCapabilitiesInternal,
+                           hidl_status_cb);
+}
+
+Return<void> WifiStaIface::configureRoaming(
+    const StaRoamingConfig& config, configureRoaming_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::configureRoamingInternal,
+                           hidl_status_cb, config);
+}
+
+Return<void> WifiStaIface::setRoamingState(StaRoamingState state,
+                                           setRoamingState_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::setRoamingStateInternal,
+                           hidl_status_cb, state);
+}
+
+Return<void> WifiStaIface::enableNdOffload(bool enable,
+                                           enableNdOffload_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::enableNdOffloadInternal,
+                           hidl_status_cb, enable);
+}
+
+Return<void> WifiStaIface::startSendingKeepAlivePackets(
+    uint32_t cmd_id, const hidl_vec<uint8_t>& ip_packet_data,
+    uint16_t ether_type, const hidl_array<uint8_t, 6>& src_address,
+    const hidl_array<uint8_t, 6>& dst_address, uint32_t period_in_ms,
+    startSendingKeepAlivePackets_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::startSendingKeepAlivePacketsInternal,
+                           hidl_status_cb, cmd_id, ip_packet_data, ether_type,
+                           src_address, dst_address, period_in_ms);
+}
+
+Return<void> WifiStaIface::stopSendingKeepAlivePackets(
+    uint32_t cmd_id, stopSendingKeepAlivePackets_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::stopSendingKeepAlivePacketsInternal,
+                           hidl_status_cb, cmd_id);
+}
+
+Return<void> WifiStaIface::setScanningMacOui(
+    const hidl_array<uint8_t, 3>& oui, setScanningMacOui_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::setScanningMacOuiInternal,
+                           hidl_status_cb, oui);
+}
+
+Return<void> WifiStaIface::startDebugPacketFateMonitoring(
+    startDebugPacketFateMonitoring_cb hidl_status_cb) {
+    return validateAndCall(
+        this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+        &WifiStaIface::startDebugPacketFateMonitoringInternal, hidl_status_cb);
+}
+
+Return<void> WifiStaIface::getDebugTxPacketFates(
+    getDebugTxPacketFates_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::getDebugTxPacketFatesInternal,
+                           hidl_status_cb);
+}
+
+Return<void> WifiStaIface::getDebugRxPacketFates(
+    getDebugRxPacketFates_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::getDebugRxPacketFatesInternal,
+                           hidl_status_cb);
+}
+
+Return<void> WifiStaIface::setMacAddress(const hidl_array<uint8_t, 6>& mac,
+                                         setMacAddress_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::setMacAddressInternal, hidl_status_cb,
+                           mac);
+}
+
+Return<void> WifiStaIface::getFactoryMacAddress(
+    getFactoryMacAddress_cb hidl_status_cb) {
+    return validateAndCall(this, WifiStatusCode::ERROR_WIFI_IFACE_INVALID,
+                           &WifiStaIface::getFactoryMacAddressInternal,
+                           hidl_status_cb);
+}
+
+std::pair<WifiStatus, std::string> WifiStaIface::getNameInternal() {
+    return {createWifiStatus(WifiStatusCode::SUCCESS), ifname_};
+}
+
+std::pair<WifiStatus, IfaceType> WifiStaIface::getTypeInternal() {
+    return {createWifiStatus(WifiStatusCode::SUCCESS), IfaceType::STA};
+}
+
+WifiStatus WifiStaIface::registerEventCallbackInternal(
+    const sp<IWifiStaIfaceEventCallback>& callback) {
+    if (!event_cb_handler_.addCallback(callback)) {
+        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+    }
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+std::pair<WifiStatus, uint32_t> WifiStaIface::getCapabilitiesInternal() {
+    legacy_hal::wifi_error legacy_status;
+    uint64_t legacy_feature_set;
+    std::tie(legacy_status, legacy_feature_set) =
+        legacy_hal_.lock()->getSupportedFeatureSet(ifname_);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        return {createWifiStatusFromLegacyError(legacy_status), 0};
+    }
+    uint32_t legacy_logger_feature_set;
+    std::tie(legacy_status, legacy_logger_feature_set) =
+        legacy_hal_.lock()->getLoggerSupportedFeatureSet(ifname_);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        // some devices don't support querying logger feature set
+        legacy_logger_feature_set = 0;
+    }
+    uint32_t hidl_caps;
+    if (!hidl_struct_util::convertLegacyFeaturesToHidlStaCapabilities(
+            legacy_feature_set, legacy_logger_feature_set, &hidl_caps)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), 0};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
+}
+
+std::pair<WifiStatus, StaApfPacketFilterCapabilities>
+WifiStaIface::getApfPacketFilterCapabilitiesInternal() {
+    legacy_hal::wifi_error legacy_status;
+    legacy_hal::PacketFilterCapabilities legacy_caps;
+    std::tie(legacy_status, legacy_caps) =
+        legacy_hal_.lock()->getPacketFilterCapabilities(ifname_);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        return {createWifiStatusFromLegacyError(legacy_status), {}};
+    }
+    StaApfPacketFilterCapabilities hidl_caps;
+    if (!hidl_struct_util::convertLegacyApfCapabilitiesToHidl(legacy_caps,
+                                                              &hidl_caps)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
+}
+
+WifiStatus WifiStaIface::installApfPacketFilterInternal(
+    uint32_t /* cmd_id */, const std::vector<uint8_t>& program) {
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->setPacketFilter(ifname_, program);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+std::pair<WifiStatus, std::vector<uint8_t>>
+WifiStaIface::readApfPacketFilterDataInternal() {
+    const std::pair<legacy_hal::wifi_error, std::vector<uint8_t>>
+        legacy_status_and_data =
+            legacy_hal_.lock()->readApfPacketFilterData(ifname_);
+    return {createWifiStatusFromLegacyError(legacy_status_and_data.first),
+            std::move(legacy_status_and_data.second)};
+}
+
+std::pair<WifiStatus, StaBackgroundScanCapabilities>
+WifiStaIface::getBackgroundScanCapabilitiesInternal() {
+    legacy_hal::wifi_error legacy_status;
+    legacy_hal::wifi_gscan_capabilities legacy_caps;
+    std::tie(legacy_status, legacy_caps) =
+        legacy_hal_.lock()->getGscanCapabilities(ifname_);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        return {createWifiStatusFromLegacyError(legacy_status), {}};
+    }
+    StaBackgroundScanCapabilities hidl_caps;
+    if (!hidl_struct_util::convertLegacyGscanCapabilitiesToHidl(legacy_caps,
+                                                                &hidl_caps)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
+}
+
+std::pair<WifiStatus, std::vector<WifiChannelInMhz>>
+WifiStaIface::getValidFrequenciesForBandInternal(V1_0::WifiBand band) {
+    static_assert(sizeof(WifiChannelInMhz) == sizeof(uint32_t),
+                  "Size mismatch");
+    legacy_hal::wifi_error legacy_status;
+    std::vector<uint32_t> valid_frequencies;
+    std::tie(legacy_status, valid_frequencies) =
+        legacy_hal_.lock()->getValidFrequenciesForBand(
+            ifname_, hidl_struct_util::convertHidlWifiBandToLegacy(band));
+    return {createWifiStatusFromLegacyError(legacy_status), valid_frequencies};
+}
+
+WifiStatus WifiStaIface::startBackgroundScanInternal(
+    uint32_t cmd_id, const StaBackgroundScanParameters& params) {
+    legacy_hal::wifi_scan_cmd_params legacy_params;
+    if (!hidl_struct_util::convertHidlGscanParamsToLegacy(params,
+                                                          &legacy_params)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    android::wp<WifiStaIface> weak_ptr_this(this);
+    const auto& on_failure_callback =
+        [weak_ptr_this](legacy_hal::wifi_request_id id) {
+            const auto shared_ptr_this = weak_ptr_this.promote();
+            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                LOG(ERROR) << "Callback invoked on an invalid object";
+                return;
+            }
+            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                if (!callback->onBackgroundScanFailure(id).isOk()) {
+                    LOG(ERROR)
+                        << "Failed to invoke onBackgroundScanFailure callback";
+                }
+            }
+        };
+    const auto& on_results_callback =
+        [weak_ptr_this](
+            legacy_hal::wifi_request_id id,
+            const std::vector<legacy_hal::wifi_cached_scan_results>& results) {
+            const auto shared_ptr_this = weak_ptr_this.promote();
+            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                LOG(ERROR) << "Callback invoked on an invalid object";
+                return;
+            }
+            std::vector<StaScanData> hidl_scan_datas;
+            if (!hidl_struct_util::
+                    convertLegacyVectorOfCachedGscanResultsToHidl(
+                        results, &hidl_scan_datas)) {
+                LOG(ERROR) << "Failed to convert scan results to HIDL structs";
+                return;
+            }
+            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                if (!callback->onBackgroundScanResults(id, hidl_scan_datas)
+                         .isOk()) {
+                    LOG(ERROR)
+                        << "Failed to invoke onBackgroundScanResults callback";
+                }
+            }
+        };
+    const auto& on_full_result_callback = [weak_ptr_this](
+                                              legacy_hal::wifi_request_id id,
+                                              const legacy_hal::
+                                                  wifi_scan_result* result,
+                                              uint32_t buckets_scanned) {
+        const auto shared_ptr_this = weak_ptr_this.promote();
+        if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+            LOG(ERROR) << "Callback invoked on an invalid object";
+            return;
+        }
+        StaScanResult hidl_scan_result;
+        if (!hidl_struct_util::convertLegacyGscanResultToHidl(
+                *result, true, &hidl_scan_result)) {
+            LOG(ERROR) << "Failed to convert full scan results to HIDL structs";
+            return;
+        }
+        for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+            if (!callback
+                     ->onBackgroundFullScanResult(id, buckets_scanned,
+                                                  hidl_scan_result)
+                     .isOk()) {
+                LOG(ERROR)
+                    << "Failed to invoke onBackgroundFullScanResult callback";
+            }
+        }
+    };
+    legacy_hal::wifi_error legacy_status = legacy_hal_.lock()->startGscan(
+        ifname_, cmd_id, legacy_params, on_failure_callback,
+        on_results_callback, on_full_result_callback);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiStaIface::stopBackgroundScanInternal(uint32_t cmd_id) {
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->stopGscan(ifname_, cmd_id);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiStaIface::enableLinkLayerStatsCollectionInternal(bool debug) {
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->enableLinkLayerStats(ifname_, debug);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiStaIface::disableLinkLayerStatsCollectionInternal() {
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->disableLinkLayerStats(ifname_);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+std::pair<WifiStatus, V1_0::StaLinkLayerStats>
+WifiStaIface::getLinkLayerStatsInternal() {
+    return {createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED), {}};
+}
+
+std::pair<WifiStatus, V1_3::StaLinkLayerStats>
+WifiStaIface::getLinkLayerStatsInternal_1_3() {
+    legacy_hal::wifi_error legacy_status;
+    legacy_hal::LinkLayerStats legacy_stats;
+    std::tie(legacy_status, legacy_stats) =
+        legacy_hal_.lock()->getLinkLayerStats(ifname_);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        return {createWifiStatusFromLegacyError(legacy_status), {}};
+    }
+    V1_3::StaLinkLayerStats hidl_stats;
+    if (!hidl_struct_util::convertLegacyLinkLayerStatsToHidl(legacy_stats,
+                                                             &hidl_stats)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_stats};
+}
+
+WifiStatus WifiStaIface::startRssiMonitoringInternal(uint32_t cmd_id,
+                                                     int32_t max_rssi,
+                                                     int32_t min_rssi) {
+    android::wp<WifiStaIface> weak_ptr_this(this);
+    const auto& on_threshold_breached_callback =
+        [weak_ptr_this](legacy_hal::wifi_request_id id,
+                        std::array<uint8_t, 6> bssid, int8_t rssi) {
+            const auto shared_ptr_this = weak_ptr_this.promote();
+            if (!shared_ptr_this.get() || !shared_ptr_this->isValid()) {
+                LOG(ERROR) << "Callback invoked on an invalid object";
+                return;
+            }
+            for (const auto& callback : shared_ptr_this->getEventCallbacks()) {
+                if (!callback->onRssiThresholdBreached(id, bssid, rssi)
+                         .isOk()) {
+                    LOG(ERROR)
+                        << "Failed to invoke onRssiThresholdBreached callback";
+                }
+            }
+        };
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->startRssiMonitoring(ifname_, cmd_id, max_rssi,
+                                                min_rssi,
+                                                on_threshold_breached_callback);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiStaIface::stopRssiMonitoringInternal(uint32_t cmd_id) {
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->stopRssiMonitoring(ifname_, cmd_id);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+std::pair<WifiStatus, StaRoamingCapabilities>
+WifiStaIface::getRoamingCapabilitiesInternal() {
+    legacy_hal::wifi_error legacy_status;
+    legacy_hal::wifi_roaming_capabilities legacy_caps;
+    std::tie(legacy_status, legacy_caps) =
+        legacy_hal_.lock()->getRoamingCapabilities(ifname_);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        return {createWifiStatusFromLegacyError(legacy_status), {}};
+    }
+    StaRoamingCapabilities hidl_caps;
+    if (!hidl_struct_util::convertLegacyRoamingCapabilitiesToHidl(legacy_caps,
+                                                                  &hidl_caps)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_caps};
+}
+
+WifiStatus WifiStaIface::configureRoamingInternal(
+    const StaRoamingConfig& config) {
+    legacy_hal::wifi_roaming_config legacy_config;
+    if (!hidl_struct_util::convertHidlRoamingConfigToLegacy(config,
+                                                            &legacy_config)) {
+        return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS);
+    }
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->configureRoaming(ifname_, legacy_config);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiStaIface::setRoamingStateInternal(StaRoamingState state) {
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->enableFirmwareRoaming(
+            ifname_, hidl_struct_util::convertHidlRoamingStateToLegacy(state));
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiStaIface::enableNdOffloadInternal(bool enable) {
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->configureNdOffload(ifname_, enable);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiStaIface::startSendingKeepAlivePacketsInternal(
+    uint32_t cmd_id, const std::vector<uint8_t>& ip_packet_data,
+    uint16_t ether_type, const std::array<uint8_t, 6>& src_address,
+    const std::array<uint8_t, 6>& dst_address, uint32_t period_in_ms) {
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->startSendingOffloadedPacket(
+            ifname_, cmd_id, ether_type, ip_packet_data, src_address,
+            dst_address, period_in_ms);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiStaIface::stopSendingKeepAlivePacketsInternal(uint32_t cmd_id) {
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->stopSendingOffloadedPacket(ifname_, cmd_id);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiStaIface::setScanningMacOuiInternal(
+    const std::array<uint8_t, 3>& oui) {
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->setScanningMacOui(ifname_, oui);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+WifiStatus WifiStaIface::startDebugPacketFateMonitoringInternal() {
+    legacy_hal::wifi_error legacy_status =
+        legacy_hal_.lock()->startPktFateMonitoring(ifname_);
+    return createWifiStatusFromLegacyError(legacy_status);
+}
+
+std::pair<WifiStatus, std::vector<WifiDebugTxPacketFateReport>>
+WifiStaIface::getDebugTxPacketFatesInternal() {
+    legacy_hal::wifi_error legacy_status;
+    std::vector<legacy_hal::wifi_tx_report> legacy_fates;
+    std::tie(legacy_status, legacy_fates) =
+        legacy_hal_.lock()->getTxPktFates(ifname_);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        return {createWifiStatusFromLegacyError(legacy_status), {}};
+    }
+    std::vector<WifiDebugTxPacketFateReport> hidl_fates;
+    if (!hidl_struct_util::convertLegacyVectorOfDebugTxPacketFateToHidl(
+            legacy_fates, &hidl_fates)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_fates};
+}
+
+std::pair<WifiStatus, std::vector<WifiDebugRxPacketFateReport>>
+WifiStaIface::getDebugRxPacketFatesInternal() {
+    legacy_hal::wifi_error legacy_status;
+    std::vector<legacy_hal::wifi_rx_report> legacy_fates;
+    std::tie(legacy_status, legacy_fates) =
+        legacy_hal_.lock()->getRxPktFates(ifname_);
+    if (legacy_status != legacy_hal::WIFI_SUCCESS) {
+        return {createWifiStatusFromLegacyError(legacy_status), {}};
+    }
+    std::vector<WifiDebugRxPacketFateReport> hidl_fates;
+    if (!hidl_struct_util::convertLegacyVectorOfDebugRxPacketFateToHidl(
+            legacy_fates, &hidl_fates)) {
+        return {createWifiStatus(WifiStatusCode::ERROR_UNKNOWN), {}};
+    }
+    return {createWifiStatus(WifiStatusCode::SUCCESS), hidl_fates};
+}
+
+WifiStatus WifiStaIface::setMacAddressInternal(
+    const std::array<uint8_t, 6>& mac) {
+    bool status = iface_util_.lock()->setMacAddress(ifname_, mac);
+    if (!status) {
+        return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN);
+    }
+    return createWifiStatus(WifiStatusCode::SUCCESS);
+}
+
+std::pair<WifiStatus, std::array<uint8_t, 6>>
+WifiStaIface::getFactoryMacAddressInternal() {
+    std::array<uint8_t, 6> mac =
+        iface_util_.lock()->getFactoryMacAddress(ifname_);
+    return {createWifiStatus(WifiStatusCode::SUCCESS), mac};
+}
+
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.4/default/wifi_sta_iface.h b/wifi/1.4/default/wifi_sta_iface.h
new file mode 100644
index 0000000..dee04f2
--- /dev/null
+++ b/wifi/1.4/default/wifi_sta_iface.h
@@ -0,0 +1,180 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef WIFI_STA_IFACE_H_
+#define WIFI_STA_IFACE_H_
+
+#include <android-base/macros.h>
+#include <android/hardware/wifi/1.0/IWifiStaIfaceEventCallback.h>
+#include <android/hardware/wifi/1.3/IWifiStaIface.h>
+
+#include "hidl_callback_util.h"
+#include "wifi_iface_util.h"
+#include "wifi_legacy_hal.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+using namespace android::hardware::wifi::V1_0;
+
+/**
+ * HIDL interface object used to control a STA Iface instance.
+ */
+class WifiStaIface : public V1_3::IWifiStaIface {
+   public:
+    WifiStaIface(const std::string& ifname,
+                 const std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal,
+                 const std::weak_ptr<iface_util::WifiIfaceUtil> iface_util);
+    // Refer to |WifiChip::invalidate()|.
+    void invalidate();
+    bool isValid();
+    std::set<sp<IWifiStaIfaceEventCallback>> getEventCallbacks();
+    std::string getName();
+
+    // HIDL methods exposed.
+    Return<void> getName(getName_cb hidl_status_cb) override;
+    Return<void> getType(getType_cb hidl_status_cb) override;
+    Return<void> registerEventCallback(
+        const sp<IWifiStaIfaceEventCallback>& callback,
+        registerEventCallback_cb hidl_status_cb) override;
+    Return<void> getCapabilities(getCapabilities_cb hidl_status_cb) override;
+    Return<void> getApfPacketFilterCapabilities(
+        getApfPacketFilterCapabilities_cb hidl_status_cb) override;
+    Return<void> installApfPacketFilter(
+        uint32_t cmd_id, const hidl_vec<uint8_t>& program,
+        installApfPacketFilter_cb hidl_status_cb) override;
+    Return<void> readApfPacketFilterData(
+        readApfPacketFilterData_cb hidl_status_cb) override;
+    Return<void> getBackgroundScanCapabilities(
+        getBackgroundScanCapabilities_cb hidl_status_cb) override;
+    Return<void> getValidFrequenciesForBand(
+        V1_0::WifiBand band,
+        getValidFrequenciesForBand_cb hidl_status_cb) override;
+    Return<void> startBackgroundScan(
+        uint32_t cmd_id, const StaBackgroundScanParameters& params,
+        startBackgroundScan_cb hidl_status_cb) override;
+    Return<void> stopBackgroundScan(
+        uint32_t cmd_id, stopBackgroundScan_cb hidl_status_cb) override;
+    Return<void> enableLinkLayerStatsCollection(
+        bool debug, enableLinkLayerStatsCollection_cb hidl_status_cb) override;
+    Return<void> disableLinkLayerStatsCollection(
+        disableLinkLayerStatsCollection_cb hidl_status_cb) override;
+    Return<void> getLinkLayerStats(
+        getLinkLayerStats_cb hidl_status_cb) override;
+    Return<void> getLinkLayerStats_1_3(
+        getLinkLayerStats_1_3_cb hidl_status_cb) override;
+    Return<void> startRssiMonitoring(
+        uint32_t cmd_id, int32_t max_rssi, int32_t min_rssi,
+        startRssiMonitoring_cb hidl_status_cb) override;
+    Return<void> stopRssiMonitoring(
+        uint32_t cmd_id, stopRssiMonitoring_cb hidl_status_cb) override;
+    Return<void> getRoamingCapabilities(
+        getRoamingCapabilities_cb hidl_status_cb) override;
+    Return<void> configureRoaming(const StaRoamingConfig& config,
+                                  configureRoaming_cb hidl_status_cb) override;
+    Return<void> setRoamingState(StaRoamingState state,
+                                 setRoamingState_cb hidl_status_cb) override;
+    Return<void> enableNdOffload(bool enable,
+                                 enableNdOffload_cb hidl_status_cb) override;
+    Return<void> startSendingKeepAlivePackets(
+        uint32_t cmd_id, const hidl_vec<uint8_t>& ip_packet_data,
+        uint16_t ether_type, const hidl_array<uint8_t, 6>& src_address,
+        const hidl_array<uint8_t, 6>& dst_address, uint32_t period_in_ms,
+        startSendingKeepAlivePackets_cb hidl_status_cb) override;
+    Return<void> stopSendingKeepAlivePackets(
+        uint32_t cmd_id,
+        stopSendingKeepAlivePackets_cb hidl_status_cb) override;
+    Return<void> setScanningMacOui(
+        const hidl_array<uint8_t, 3>& oui,
+        setScanningMacOui_cb hidl_status_cb) override;
+    Return<void> startDebugPacketFateMonitoring(
+        startDebugPacketFateMonitoring_cb hidl_status_cb) override;
+    Return<void> getDebugTxPacketFates(
+        getDebugTxPacketFates_cb hidl_status_cb) override;
+    Return<void> getDebugRxPacketFates(
+        getDebugRxPacketFates_cb hidl_status_cb) override;
+    Return<void> setMacAddress(const hidl_array<uint8_t, 6>& mac,
+                               setMacAddress_cb hidl_status_cb) override;
+    Return<void> getFactoryMacAddress(
+        getFactoryMacAddress_cb hidl_status_cb) override;
+
+   private:
+    // Corresponding worker functions for the HIDL methods.
+    std::pair<WifiStatus, std::string> getNameInternal();
+    std::pair<WifiStatus, IfaceType> getTypeInternal();
+    WifiStatus registerEventCallbackInternal(
+        const sp<IWifiStaIfaceEventCallback>& callback);
+    std::pair<WifiStatus, uint32_t> getCapabilitiesInternal();
+    std::pair<WifiStatus, StaApfPacketFilterCapabilities>
+    getApfPacketFilterCapabilitiesInternal();
+    WifiStatus installApfPacketFilterInternal(
+        uint32_t cmd_id, const std::vector<uint8_t>& program);
+    std::pair<WifiStatus, std::vector<uint8_t>>
+    readApfPacketFilterDataInternal();
+    std::pair<WifiStatus, StaBackgroundScanCapabilities>
+    getBackgroundScanCapabilitiesInternal();
+    std::pair<WifiStatus, std::vector<WifiChannelInMhz>>
+    getValidFrequenciesForBandInternal(V1_0::WifiBand band);
+    WifiStatus startBackgroundScanInternal(
+        uint32_t cmd_id, const StaBackgroundScanParameters& params);
+    WifiStatus stopBackgroundScanInternal(uint32_t cmd_id);
+    WifiStatus enableLinkLayerStatsCollectionInternal(bool debug);
+    WifiStatus disableLinkLayerStatsCollectionInternal();
+    std::pair<WifiStatus, V1_0::StaLinkLayerStats> getLinkLayerStatsInternal();
+    std::pair<WifiStatus, V1_3::StaLinkLayerStats>
+    getLinkLayerStatsInternal_1_3();
+    WifiStatus startRssiMonitoringInternal(uint32_t cmd_id, int32_t max_rssi,
+                                           int32_t min_rssi);
+    WifiStatus stopRssiMonitoringInternal(uint32_t cmd_id);
+    std::pair<WifiStatus, StaRoamingCapabilities>
+    getRoamingCapabilitiesInternal();
+    WifiStatus configureRoamingInternal(const StaRoamingConfig& config);
+    WifiStatus setRoamingStateInternal(StaRoamingState state);
+    WifiStatus enableNdOffloadInternal(bool enable);
+    WifiStatus startSendingKeepAlivePacketsInternal(
+        uint32_t cmd_id, const std::vector<uint8_t>& ip_packet_data,
+        uint16_t ether_type, const std::array<uint8_t, 6>& src_address,
+        const std::array<uint8_t, 6>& dst_address, uint32_t period_in_ms);
+    WifiStatus stopSendingKeepAlivePacketsInternal(uint32_t cmd_id);
+    WifiStatus setScanningMacOuiInternal(const std::array<uint8_t, 3>& oui);
+    WifiStatus startDebugPacketFateMonitoringInternal();
+    std::pair<WifiStatus, std::vector<WifiDebugTxPacketFateReport>>
+    getDebugTxPacketFatesInternal();
+    std::pair<WifiStatus, std::vector<WifiDebugRxPacketFateReport>>
+    getDebugRxPacketFatesInternal();
+    WifiStatus setMacAddressInternal(const std::array<uint8_t, 6>& mac);
+    std::pair<WifiStatus, std::array<uint8_t, 6>>
+    getFactoryMacAddressInternal();
+
+    std::string ifname_;
+    std::weak_ptr<legacy_hal::WifiLegacyHal> legacy_hal_;
+    std::weak_ptr<iface_util::WifiIfaceUtil> iface_util_;
+    bool is_valid_;
+    hidl_callback_util::HidlCallbackHandler<IWifiStaIfaceEventCallback>
+        event_cb_handler_;
+
+    DISALLOW_COPY_AND_ASSIGN(WifiStaIface);
+};
+
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // WIFI_STA_IFACE_H_
diff --git a/wifi/1.4/default/wifi_status_util.cpp b/wifi/1.4/default/wifi_status_util.cpp
new file mode 100644
index 0000000..8ceb926
--- /dev/null
+++ b/wifi/1.4/default/wifi_status_util.cpp
@@ -0,0 +1,112 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "wifi_status_util.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+
+std::string legacyErrorToString(legacy_hal::wifi_error error) {
+    switch (error) {
+        case legacy_hal::WIFI_SUCCESS:
+            return "SUCCESS";
+        case legacy_hal::WIFI_ERROR_UNINITIALIZED:
+            return "UNINITIALIZED";
+        case legacy_hal::WIFI_ERROR_NOT_AVAILABLE:
+            return "NOT_AVAILABLE";
+        case legacy_hal::WIFI_ERROR_NOT_SUPPORTED:
+            return "NOT_SUPPORTED";
+        case legacy_hal::WIFI_ERROR_INVALID_ARGS:
+            return "INVALID_ARGS";
+        case legacy_hal::WIFI_ERROR_INVALID_REQUEST_ID:
+            return "INVALID_REQUEST_ID";
+        case legacy_hal::WIFI_ERROR_TIMED_OUT:
+            return "TIMED_OUT";
+        case legacy_hal::WIFI_ERROR_TOO_MANY_REQUESTS:
+            return "TOO_MANY_REQUESTS";
+        case legacy_hal::WIFI_ERROR_OUT_OF_MEMORY:
+            return "OUT_OF_MEMORY";
+        case legacy_hal::WIFI_ERROR_BUSY:
+            return "BUSY";
+        case legacy_hal::WIFI_ERROR_UNKNOWN:
+            return "UNKNOWN";
+        default:
+            return "UNKNOWN ERROR";
+    }
+}
+
+WifiStatus createWifiStatus(WifiStatusCode code,
+                            const std::string& description) {
+    return {code, description};
+}
+
+WifiStatus createWifiStatus(WifiStatusCode code) {
+    return createWifiStatus(code, "");
+}
+
+WifiStatus createWifiStatusFromLegacyError(legacy_hal::wifi_error error,
+                                           const std::string& desc) {
+    switch (error) {
+        case legacy_hal::WIFI_ERROR_UNINITIALIZED:
+        case legacy_hal::WIFI_ERROR_NOT_AVAILABLE:
+            return createWifiStatus(WifiStatusCode::ERROR_NOT_AVAILABLE, desc);
+
+        case legacy_hal::WIFI_ERROR_NOT_SUPPORTED:
+            return createWifiStatus(WifiStatusCode::ERROR_NOT_SUPPORTED, desc);
+
+        case legacy_hal::WIFI_ERROR_INVALID_ARGS:
+        case legacy_hal::WIFI_ERROR_INVALID_REQUEST_ID:
+            return createWifiStatus(WifiStatusCode::ERROR_INVALID_ARGS, desc);
+
+        case legacy_hal::WIFI_ERROR_TIMED_OUT:
+            return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN,
+                                    desc + ", timed out");
+
+        case legacy_hal::WIFI_ERROR_TOO_MANY_REQUESTS:
+            return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN,
+                                    desc + ", too many requests");
+
+        case legacy_hal::WIFI_ERROR_OUT_OF_MEMORY:
+            return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN,
+                                    desc + ", out of memory");
+
+        case legacy_hal::WIFI_ERROR_BUSY:
+            return createWifiStatus(WifiStatusCode::ERROR_BUSY);
+
+        case legacy_hal::WIFI_ERROR_NONE:
+            return createWifiStatus(WifiStatusCode::SUCCESS, desc);
+
+        case legacy_hal::WIFI_ERROR_UNKNOWN:
+            return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN, "unknown");
+
+        default:
+            return createWifiStatus(WifiStatusCode::ERROR_UNKNOWN,
+                                    "unknown error");
+    }
+}
+
+WifiStatus createWifiStatusFromLegacyError(legacy_hal::wifi_error error) {
+    return createWifiStatusFromLegacyError(error, "");
+}
+
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
diff --git a/wifi/1.4/default/wifi_status_util.h b/wifi/1.4/default/wifi_status_util.h
new file mode 100644
index 0000000..3ff58f0
--- /dev/null
+++ b/wifi/1.4/default/wifi_status_util.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef WIFI_STATUS_UTIL_H_
+#define WIFI_STATUS_UTIL_H_
+
+#include <android/hardware/wifi/1.4/IWifi.h>
+
+#include "wifi_legacy_hal.h"
+
+namespace android {
+namespace hardware {
+namespace wifi {
+namespace V1_4 {
+namespace implementation {
+using namespace android::hardware::wifi::V1_0;
+
+std::string legacyErrorToString(legacy_hal::wifi_error error);
+WifiStatus createWifiStatus(WifiStatusCode code,
+                            const std::string& description);
+WifiStatus createWifiStatus(WifiStatusCode code);
+WifiStatus createWifiStatusFromLegacyError(legacy_hal::wifi_error error,
+                                           const std::string& description);
+WifiStatus createWifiStatusFromLegacyError(legacy_hal::wifi_error error);
+
+}  // namespace implementation
+}  // namespace V1_4
+}  // namespace wifi
+}  // namespace hardware
+}  // namespace android
+
+#endif  // WIFI_STATUS_UTIL_H_
diff --git a/wifi/1.4/types.hal b/wifi/1.4/types.hal
new file mode 100644
index 0000000..4f1d22e
--- /dev/null
+++ b/wifi/1.4/types.hal
@@ -0,0 +1,593 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi@1.4;
+
+import @1.0::MacAddress;
+import @1.0::NanBandIndex;
+import @1.0::NanBandSpecificConfig;
+import @1.0::Rssi;
+import @1.0::RttBw;
+import @1.0::RttConfig;
+import @1.0::RttPeerType;
+import @1.0::RttPreamble;
+import @1.0::RttStatus;
+import @1.0::RttType;
+import @1.0::TimeSpanInPs;
+import @1.0::TimeStampInUs;
+import @1.0::WifiBand;
+import @1.0::WifiChannelInfo;
+import @1.0::WifiChannelInMhz;
+import @1.0::WifiChannelWidthInMhz;
+import @1.0::WifiInformationElement;
+import @1.0::WifiRateNss;
+import @1.0::WifiRatePreamble;
+
+/**
+ * Wifi bands defined in 80211 spec.
+ */
+enum WifiBand : @1.0::WifiBand {
+    /**
+     * 6 GHz.
+     */
+    BAND_6GHZ = 8,
+    /**
+     * 5 GHz no DFS + 6 GHz.
+     */
+    BAND_5GHZ_6GHZ = 10,
+    /**
+     * 2.4 GHz + 5 GHz no DFS + 6 GHz.
+     */
+    BAND_24GHZ_5GHZ_6GHZ = 11,
+    /**
+     * 2.4 GHz + 5 GHz with DFS + 6 GHz.
+     */
+    BAND_24GHZ_5GHZ_WITH_DFS_6GHZ = 15,
+};
+
+/**
+ * The discovery bands supported by NAN.
+ */
+enum NanBandIndex : @1.0::NanBandIndex {
+    /**
+     * Index for 6 GHz band.
+     */
+    NAN_BAND_6GHZ = 2,
+};
+
+/**
+ * Wifi Rate Preamble
+ */
+enum WifiRatePreamble : @1.0::WifiRatePreamble {
+    /**
+     * Preamble type for 11ax
+     */
+    HE = 5,
+};
+
+/**
+ * RTT Measurement Preamble.
+ */
+enum RttPreamble : @1.0::RttPreamble {
+    /**
+     * Preamble type for 11ax
+     */
+    HE = 0x8,
+};
+
+/**
+ * Debug configuration parameters. Many of these allow non-standard-compliant operation and are
+ * not intended for normal operational mode.
+ */
+struct NanDebugConfig {
+    /**
+     * Specification of the lower 2 bytes of the cluster ID. The cluster ID is 50-60-9a-01-00-00 to
+     * 50-60-9a-01-FF-FF. Configuration of the bottom and top values of the range (which defaults to
+     * 0x0000 and 0xFFFF respectively).
+     * Configuration is only used if |validClusterIdVals| is set to true.
+     */
+    bool validClusterIdVals;
+
+    uint16_t clusterIdBottomRangeVal;
+
+    uint16_t clusterIdTopRangeVal;
+
+    /**
+     * NAN management interface address, if specified (|validIntfAddrVal| is true) then overrides any
+     * other configuration (specifically the default randomization configured by
+     * |NanConfigRequest.macAddressRandomizationIntervalSec|).
+     */
+    bool validIntfAddrVal;
+
+    MacAddress intfAddrVal;
+
+    /**
+     * Combination of the 24 bit Organizationally Unique ID (OUI) and the 8 bit OUI Type.
+     * Used if |validOuiVal| is set to true.
+     */
+    bool validOuiVal;
+
+    uint32_t ouiVal;
+
+    /**
+     * Force the Random Factor to the specified value for all transmitted Sync/Discovery beacons.
+     * Used if |validRandomFactorForceVal| is set to true.
+     * NAN Spec: Master Indication Attribute / Random Factor
+     */
+    bool validRandomFactorForceVal;
+
+    uint8_t randomFactorForceVal;
+
+    /**
+     * Forces the hop-count for all transmitted Sync and Discovery Beacons NO matter the real
+     * hop-count being received over the air. Used if the |validHopCountForceVal}| flag is set to
+     * true.
+     * NAN Spec: Cluster Attribute / Anchor Master Information / Hop Count to Anchor Master
+     */
+    bool validHopCountForceVal;
+
+    uint8_t hopCountForceVal;
+
+    /**
+     * Frequency in MHz to of the discovery channel in the specified band. Indexed by |NanBandIndex|.
+     * Used if the |validDiscoveryChannelVal| is set to true.
+     */
+    bool validDiscoveryChannelVal;
+
+    WifiChannelInMhz[3] discoveryChannelMhzVal;
+
+    /**
+     * Specifies whether sync/discovery beacons are transmitted in the specified band. Indexed by
+     * |NanBandIndex|. Used if the |validUseBeaconsInBandVal| is set to true.
+     */
+    bool validUseBeaconsInBandVal;
+
+    bool[3] useBeaconsInBandVal;
+
+    /**
+     * Specifies whether SDF (service discovery frames) are transmitted in the specified band. Indexed
+     * by |NanBandIndex|. Used if the |validUseSdfInBandVal| is set to true.
+     */
+    bool validUseSdfInBandVal;
+
+    bool[3] useSdfInBandVal;
+};
+
+/**
+ * Configuration parameters of NAN: used when enabling and re-configuring a NAN cluster.
+ */
+struct NanConfigRequest {
+    /**
+     * Master preference of this device.
+     * NAN Spec: Master Indication Attribute / Master Preference
+     */
+    uint8_t masterPref;
+
+    /**
+     * Controls whether or not the |IWifiNanIfaceEventCallback.eventClusterEvent| will be delivered
+     * for |NanClusterEventType.DISCOVERY_MAC_ADDRESS_CHANGED|.
+     */
+    bool disableDiscoveryAddressChangeIndication;
+
+    /**
+     * Controls whether or not the |IWifiNanIfaceEventCallback.eventClusterEvent| will be delivered
+     * for |NanClusterEventType.STARTED_CLUSTER|.
+     */
+    bool disableStartedClusterIndication;
+
+    /**
+     * Controls whether or not the |IWifiNanIfaceEventCallback.eventClusterEvent| will be delivered
+     * for |NanClusterEventType.JOINED_CLUSTER|.
+     */
+    bool disableJoinedClusterIndication;
+
+    /**
+     * Control whether publish service IDs are included in Sync/Discovery beacons.
+     * NAN Spec: Service ID List Attribute
+     */
+    bool includePublishServiceIdsInBeacon;
+
+    /**
+     * If |includePublishServiceIdsInBeacon| is true then specifies the number of publish service IDs
+     * to include in the Sync/Discovery beacons:
+     *  Value = 0: include as many service IDs as will fit into the maximum allowed beacon frame size.
+     *  Value must fit within 7 bits - i.e. <= 127.
+     */
+    uint8_t numberOfPublishServiceIdsInBeacon;
+
+    /**
+     * Control whether subscribe service IDs are included in Sync/Discovery beacons.
+     * Spec: Subscribe Service ID List Attribute
+     */
+    bool includeSubscribeServiceIdsInBeacon;
+
+    /**
+     * If |includeSubscribeServiceIdsInBeacon| is true then specifies the number of subscribe service
+     * IDs to include in the Sync/Discovery beacons:
+     *  Value = 0: include as many service IDs as will fit into the maximum allowed beacon frame size.
+     *  Value must fit within 7 bits - i.e. <= 127.
+     */
+    uint8_t numberOfSubscribeServiceIdsInBeacon;
+
+    /**
+     * Number of samples used to calculate RSSI.
+     */
+    uint16_t rssiWindowSize;
+
+    /**
+     * Specifies the interval in seconds that the NAN management interface MAC address is randomized.
+     * A value of 0 is used to disable the MAC address randomization
+     */
+    uint32_t macAddressRandomizationIntervalSec;
+
+    /**
+     * Additional configuration provided per band: indexed by |NanBandIndex|.
+     */
+    NanBandSpecificConfig[3] bandSpecificConfig;
+};
+
+/**
+ * Enable requests for NAN: start-up configuration |IWifiNanIface.enableRequest|.
+ */
+struct NanEnableRequest {
+    /**
+     * Enable operation in a specific band: indexed by |NanBandIndex|.
+     */
+    bool[3] operateInBand;
+
+    /**
+     * Specify extent of cluster by specifying the max hop count.
+     */
+    uint8_t hopCountMax;
+
+    /**
+     * Configurations of NAN cluster operation. Can also be modified at run-time using
+     * |IWifiNanIface.configRequest|.
+     */
+    NanConfigRequest configParams;
+
+    /**
+     * Non-standard configurations of NAN cluster operation - useful for debugging operations.
+     */
+    NanDebugConfig debugConfigs;
+};
+
+/**
+ * RTT configuration.
+ */
+struct RttConfig {
+    /**
+     * Peer device mac address.
+     */
+    MacAddress addr;
+
+    /**
+     * 1-sided or 2-sided RTT.
+     */
+    RttType type;
+
+    /**
+     * Optional - peer device hint (STA, P2P, AP).
+     */
+    RttPeerType peer;
+
+    /**
+     * Required for STA-AP mode, optional for P2P, NBD etc.
+     */
+    WifiChannelInfo channel;
+
+    /**
+     * Time interval between bursts (units: 100 ms).
+     * Applies to 1-sided and 2-sided RTT multi-burst requests.
+     * Range: 0-31, 0: no preference by initiator (2-sided RTT).
+     */
+    uint32_t burstPeriod;
+
+    /**
+     * Total number of RTT bursts to be executed. It will be
+     * specified in the same way as the parameter "Number of
+     * Burst Exponent" found in the FTM frame format. It
+     * applies to both: 1-sided RTT and 2-sided RTT. Valid
+     * values are 0 to 15 as defined in 802.11mc std.
+     * 0 means single shot
+     * The implication of this parameter on the maximum
+     * number of RTT results is the following:
+     * for 1-sided RTT: max num of RTT results = (2^num_burst)*(num_frames_per_burst)
+     * for 2-sided RTT: max num of RTT results = (2^num_burst)*(num_frames_per_burst - 1)
+     */
+    uint32_t numBurst;
+
+    /**
+     * Num of frames per burst.
+     * Minimum value = 1, Maximum value = 31
+     * For 2-sided this equals the number of FTM frames
+     * to be attempted in a single burst. This also
+     * equals the number of FTM frames that the
+     * initiator will request that the responder send
+     * in a single frame.
+     */
+    uint32_t numFramesPerBurst;
+
+    /**
+     * Number of retries for a failed RTT frame.
+     * Applies to 1-sided RTT only. Minimum value = 0, Maximum value = 3
+     */
+    uint32_t numRetriesPerRttFrame;
+
+    /**
+     * Following fields are only valid for 2-side RTT.
+     *
+     *
+     * Maximum number of retries that the initiator can
+     * retry an FTMR frame.
+     * Minimum value = 0, Maximum value = 3
+     */
+    uint32_t numRetriesPerFtmr;
+
+    /**
+     * Whether to request location civic info or not.
+     */
+    bool mustRequestLci;
+
+    /**
+     * Whether to request location civic records or not.
+     */
+    bool mustRequestLcr;
+
+    /**
+     * Applies to 1-sided and 2-sided RTT. Valid values will
+     * be 2-11 and 15 as specified by the 802.11mc std for
+     * the FTM parameter burst duration. In a multi-burst
+     * request, if responder overrides with larger value,
+     * the initiator will return failure. In a single-burst
+     * request if responder overrides with larger value,
+     * the initiator will sent TMR_STOP to terminate RTT
+     * at the end of the burst_duration it requested.
+     */
+    uint32_t burstDuration;
+
+    /**
+     * RTT preamble to be used in the RTT frames.
+     */
+    RttPreamble preamble;
+
+    /**
+     * RTT BW to be used in the RTT frames.
+     */
+    RttBw bw;
+};
+
+/**
+ * RTT Capabilities.
+ */
+struct RttCapabilities {
+    /**
+     * if 1-sided rtt data collection is supported.
+     */
+    bool rttOneSidedSupported;
+
+    /**
+     * if ftm rtt data collection is supported.
+     */
+    bool rttFtmSupported;
+
+    /**
+     * if initiator supports LCI request. Applies to 2-sided RTT.
+     */
+    bool lciSupported;
+
+    /**
+     * if initiator supports LCR request. Applies to 2-sided RTT.
+     */
+    bool lcrSupported;
+
+    /**
+     * if 11mc responder mode is supported.
+     */
+    bool responderSupported;
+
+    /**
+     * Bit mask indicates what preamble is supported by initiator.
+     * Combination of |RttPreamble| values.
+     */
+    bitfield<RttPreamble> preambleSupport;
+
+    /**
+     * Bit mask indicates what BW is supported by initiator.
+     * Combination of |RttBw| values.
+     */
+    bitfield<RttBw> bwSupport;
+
+    /**
+     * Draft 11mc spec version supported by chip.
+     * For instance, version 4.0 must be 40 and version 4.3 must be 43 etc.
+     */
+    uint8_t mcVersion;
+};
+
+/**
+ * RTT Responder information
+ */
+struct RttResponder {
+    WifiChannelInfo channel;
+
+    RttPreamble preamble;
+};
+
+/**
+ * Wifi rate info.
+ */
+struct WifiRateInfo {
+    /**
+     * Preamble used for RTT measurements.
+     */
+    WifiRatePreamble preamble;
+
+    /**
+     * Number of spatial streams.
+     */
+    WifiRateNss nss;
+
+    /**
+     * Bandwidth of channel.
+     */
+    WifiChannelWidthInMhz bw;
+
+    /**
+     * OFDM/CCK rate code would be as per ieee std in the units of 0.5mbps.
+     * HT/VHT/HE it would be mcs index.
+     */
+    uint8_t rateMcsIdx;
+
+    /**
+     * Bitrate in units of 100 Kbps.
+     */
+    uint32_t bitRateInKbps;
+};
+
+/**
+ * RTT results.
+ */
+struct RttResult {
+    /**
+     * Peer device mac address.
+     */
+    MacAddress addr;
+
+    /**
+     * Burst number in a multi-burst request.
+     */
+    uint32_t burstNum;
+
+    /**
+     * Total RTT measurement frames attempted.
+     */
+    uint32_t measurementNumber;
+
+    /**
+     * Total successful RTT measurement frames.
+     */
+    uint32_t successNumber;
+
+    /**
+     * Maximum number of "FTM frames per burst" supported by
+     * the responder STA. Applies to 2-sided RTT only.
+     * If reponder overrides with larger value:
+     * - for single-burst request initiator will truncate the
+     * larger value and send a TMR_STOP after receiving as
+     * many frames as originally requested.
+     * - for multi-burst request, initiator will return
+     * failure right away.
+     */
+    uint8_t numberPerBurstPeer;
+
+    /**
+     * Ranging status.
+     */
+    RttStatus status;
+
+    /**
+     * When status == RTT_STATUS_FAIL_BUSY_TRY_LATER,
+     * this will be the time provided by the responder as to
+     * when the request can be tried again. Applies to 2-sided
+     * RTT only. In sec, 1-31sec.
+     */
+    uint8_t retryAfterDuration;
+
+    /**
+     * RTT type.
+     */
+    RttType type;
+
+    /**
+     * Average rssi in 0.5 dB steps e.g. 143 implies -71.5 dB.
+     */
+    Rssi rssi;
+
+    /**
+     * Rssi spread in 0.5 dB steps e.g. 5 implies 2.5 dB spread (optional).
+     */
+    Rssi rssiSpread;
+
+    /**
+     * 1-sided RTT: TX rate of RTT frame.
+     * 2-sided RTT: TX rate of initiator's Ack in response to FTM frame.
+     */
+    WifiRateInfo txRate;
+
+    /**
+     * 1-sided RTT: TX rate of Ack from other side.
+     * 2-sided RTT: TX rate of FTM frame coming from responder.
+     */
+    WifiRateInfo rxRate;
+
+    /**
+     * Round trip time in picoseconds
+     */
+    TimeSpanInPs rtt;
+
+    /**
+     * Rtt standard deviation in picoseconds.
+     */
+    TimeSpanInPs rttSd;
+
+    /**
+     * Difference between max and min rtt times recorded in picoseconds.
+     */
+    TimeSpanInPs rttSpread;
+
+    /**
+     * Distance in mm (optional).
+     */
+    int32_t distanceInMm;
+
+    /**
+     * Standard deviation in mm (optional).
+     */
+    int32_t distanceSdInMm;
+
+    /**
+     * Difference between max and min distance recorded in mm (optional).
+     */
+    int32_t distanceSpreadInMm;
+
+    /**
+     * Time of the measurement (in microseconds since boot).
+     */
+    TimeStampInUs timeStampInUs;
+
+    /**
+     * in ms, actual time taken by the FW to finish one burst
+     * measurement. Applies to 1-sided and 2-sided RTT.
+     */
+    uint32_t burstDurationInMs;
+
+    /**
+     * Number of bursts allowed by the responder. Applies
+     * to 2-sided RTT only.
+     */
+    uint32_t negotiatedBurstNum;
+
+    /**
+     * for 11mc only.
+     */
+    WifiInformationElement lci;
+
+    /**
+     * for 11mc only.
+     */
+    WifiInformationElement lcr;
+};
diff --git a/wifi/1.3/default/OWNERS b/wifi/1.4/vts/OWNERS
similarity index 100%
copy from wifi/1.3/default/OWNERS
copy to wifi/1.4/vts/OWNERS
diff --git a/wifi/1.4/vts/functional/Android.bp b/wifi/1.4/vts/functional/Android.bp
new file mode 100644
index 0000000..46ac3ee
--- /dev/null
+++ b/wifi/1.4/vts/functional/Android.bp
@@ -0,0 +1,37 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+// SoftAP-specific tests, similar to VtsHalWifiApV1_0TargetTest.
+cc_test {
+    name: "VtsHalWifiApV1_4TargetTest",
+    defaults: ["VtsHalTargetTestDefaults"],
+    srcs: [
+        "VtsHalWifiV1_4TargetTest.cpp",
+        "wifi_ap_iface_hidl_test.cpp",
+        "wifi_chip_hidl_test.cpp",
+		"wifi_nan_iface_hidl_test.cpp"
+    ],
+    static_libs: [
+        "VtsHalWifiV1_0TargetTestUtil",
+        "android.hardware.wifi@1.0",
+        "android.hardware.wifi@1.1",
+        "android.hardware.wifi@1.2",
+        "android.hardware.wifi@1.3",
+        "android.hardware.wifi@1.4",
+        "libwifi-system-iface"
+    ],
+    test_suites: ["general-tests", "vts-core"],
+}
diff --git a/wifi/1.4/vts/functional/VtsHalWifiV1_4TargetTest.cpp b/wifi/1.4/vts/functional/VtsHalWifiV1_4TargetTest.cpp
new file mode 100644
index 0000000..7e0f3cd
--- /dev/null
+++ b/wifi/1.4/vts/functional/VtsHalWifiV1_4TargetTest.cpp
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <VtsHalHidlTargetTestEnvBase.h>
+
+// TODO(b/143892896): Remove this file after wifi_hidl_test_utils.cpp is
+// updated.
+::testing::VtsHalHidlTargetTestEnvBase* gEnv = nullptr;
\ No newline at end of file
diff --git a/wifi/1.4/vts/functional/wifi_ap_iface_hidl_test.cpp b/wifi/1.4/vts/functional/wifi_ap_iface_hidl_test.cpp
new file mode 100644
index 0000000..3507d30
--- /dev/null
+++ b/wifi/1.4/vts/functional/wifi_ap_iface_hidl_test.cpp
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Staache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT 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/wifi/1.4/IWifi.h>
+#include <android/hardware/wifi/1.4/IWifiApIface.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
+
+#include "wifi_hidl_call_util.h"
+#include "wifi_hidl_test_utils.h"
+
+using ::android::sp;
+using ::android::hardware::hidl_array;
+using ::android::hardware::wifi::V1_0::WifiStatus;
+using ::android::hardware::wifi::V1_0::WifiStatusCode;
+using ::android::hardware::wifi::V1_4::IWifi;
+using ::android::hardware::wifi::V1_4::IWifiApIface;
+
+extern WifiHidlEnvironment* gEnv;
+
+/**
+ * Fixture to use for all STA Iface HIDL interface tests.
+ */
+class WifiApIfaceHidlTest : public ::testing::TestWithParam<std::string> {
+   public:
+    virtual void SetUp() override {
+        // Make sure to start with a clean state
+        stopWifi(GetInstanceName());
+
+        wifi_ap_iface_ =
+            IWifiApIface::castFrom(getWifiApIface(GetInstanceName()));
+        ASSERT_NE(nullptr, wifi_ap_iface_.get());
+    }
+
+    virtual void TearDown() override { stopWifi(GetInstanceName()); }
+
+   protected:
+    sp<IWifiApIface> wifi_ap_iface_;
+
+   private:
+    std::string GetInstanceName() { return GetParam(); }
+};
+
+/*
+ * SetMacAddress:
+ * Ensures that calls to set MAC address will return a success status
+ * code.
+ */
+TEST_P(WifiApIfaceHidlTest, SetMacAddress) {
+    const hidl_array<uint8_t, 6> kMac{{0x12, 0x22, 0x33, 0x52, 0x10, 0x41}};
+    EXPECT_EQ(WifiStatusCode::SUCCESS,
+              HIDL_INVOKE(wifi_ap_iface_, setMacAddress, kMac).code);
+}
+
+/*
+ * GetFactoryMacAddress:
+ * Ensures that calls to get factory MAC address will retrieve a non-zero MAC
+ * and return a success status code.
+ */
+TEST_P(WifiApIfaceHidlTest, GetFactoryMacAddress) {
+    std::pair<WifiStatus, hidl_array<uint8_t, 6> > status_and_mac =
+        HIDL_INVOKE(wifi_ap_iface_, getFactoryMacAddress);
+    EXPECT_EQ(WifiStatusCode::SUCCESS, status_and_mac.first.code);
+    hidl_array<uint8_t, 6> all_zero{};
+    EXPECT_NE(all_zero, status_and_mac.second);
+}
+
+INSTANTIATE_TEST_SUITE_P(
+    PerInstance, WifiApIfaceHidlTest,
+    testing::ValuesIn(
+        android::hardware::getAllHalInstanceNames(IWifi::descriptor)),
+    android::hardware::PrintInstanceNameToString);
diff --git a/wifi/1.4/vts/functional/wifi_chip_hidl_test.cpp b/wifi/1.4/vts/functional/wifi_chip_hidl_test.cpp
new file mode 100644
index 0000000..7896067
--- /dev/null
+++ b/wifi/1.4/vts/functional/wifi_chip_hidl_test.cpp
@@ -0,0 +1,138 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <VtsHalHidlTargetCallbackBase.h>
+#include <android-base/logging.h>
+
+#undef NAN  // NAN is defined in bionic/libc/include/math.h:38
+
+#include <android/hardware/wifi/1.4/IWifi.h>
+#include <android/hardware/wifi/1.4/IWifiChip.h>
+#include <android/hardware/wifi/1.4/IWifiChipEventCallback.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
+
+#include "wifi_hidl_call_util.h"
+#include "wifi_hidl_test_utils.h"
+
+using ::android::sp;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::wifi::V1_0::IfaceType;
+using ::android::hardware::wifi::V1_0::WifiDebugRingBufferStatus;
+using ::android::hardware::wifi::V1_0::WifiStatus;
+using ::android::hardware::wifi::V1_0::WifiStatusCode;
+using ::android::hardware::wifi::V1_4::IWifiChip;
+using ::android::hardware::wifi::V1_4::IWifiChipEventCallback;
+
+/**
+ * Fixture to use for all Wifi chip HIDL interface tests.
+ */
+class WifiChipHidlTest : public ::testing::TestWithParam<std::string> {
+   public:
+    virtual void SetUp() override {
+        // Make sure to start with a clean state
+        stopWifi(GetInstanceName());
+
+        wifi_chip_ = IWifiChip::castFrom(getWifiChip(GetInstanceName()));
+        ASSERT_NE(nullptr, wifi_chip_.get());
+    }
+
+    virtual void TearDown() override { stopWifi(GetInstanceName()); }
+
+    // A simple test implementation of WifiChipEventCallback.
+    class WifiChipEventCallback
+        : public ::testing::VtsHalHidlTargetCallbackBase<WifiChipHidlTest>,
+          public IWifiChipEventCallback {
+       public:
+        WifiChipEventCallback(){};
+
+        virtual ~WifiChipEventCallback() = default;
+
+        Return<void> onChipReconfigured(uint32_t modeId __unused) {
+            return Void();
+        };
+
+        Return<void> onChipReconfigureFailure(
+            const WifiStatus& status __unused) {
+            return Void();
+        };
+
+        Return<void> onIfaceAdded(IfaceType type __unused,
+                                  const hidl_string& name __unused) {
+            return Void();
+        };
+
+        Return<void> onIfaceRemoved(IfaceType type __unused,
+                                    const hidl_string& name __unused) {
+            return Void();
+        };
+
+        Return<void> onDebugRingBufferDataAvailable(
+            const WifiDebugRingBufferStatus& status __unused,
+            const hidl_vec<uint8_t>& data __unused) {
+            return Void();
+        };
+
+        Return<void> onDebugErrorAlert(int32_t errorCode __unused,
+                                       const hidl_vec<uint8_t>& debugData
+                                           __unused) {
+            return Void();
+        };
+
+        Return<void> onRadioModeChange(
+            const hidl_vec<::android::hardware::wifi::V1_2::
+                               IWifiChipEventCallback::RadioModeInfo>&
+                radioModeInfos __unused) {
+            return Void();
+        };
+
+        Return<void> onRadioModeChange_1_4(
+            const hidl_vec<RadioModeInfo>& radioModeInfos __unused) {
+            return Void();
+        };
+    };
+
+   protected:
+    sp<IWifiChip> wifi_chip_;
+
+   private:
+    std::string GetInstanceName() { return GetParam(); }
+};
+
+/*
+ * registerEventCallback_1_4
+ * This test case tests the registerEventCallback_1_4() API which registers
+ * a call back function with the hal implementation
+ *
+ * Note: it is not feasible to test the invocation of the call back function
+ * since event is triggered internally in the HAL implementation, and can not be
+ * triggered from the test case
+ */
+TEST_P(WifiChipHidlTest, registerEventCallback_1_4) {
+    sp<WifiChipEventCallback> wifiChipEventCallback =
+        new WifiChipEventCallback();
+    const auto& status = HIDL_INVOKE(wifi_chip_, registerEventCallback_1_4,
+                                     wifiChipEventCallback);
+
+    if (status.code != WifiStatusCode::SUCCESS) {
+        EXPECT_EQ(WifiStatusCode::ERROR_NOT_SUPPORTED, status.code);
+        return;
+    }
+}
diff --git a/wifi/1.4/vts/functional/wifi_nan_iface_hidl_test.cpp b/wifi/1.4/vts/functional/wifi_nan_iface_hidl_test.cpp
new file mode 100644
index 0000000..688faf1
--- /dev/null
+++ b/wifi/1.4/vts/functional/wifi_nan_iface_hidl_test.cpp
@@ -0,0 +1,547 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Nanache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT 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/hardware/wifi/1.2/IWifiNanIfaceEventCallback.h>
+#include <android/hardware/wifi/1.4/IWifi.h>
+#include <android/hardware/wifi/1.4/IWifiNanIface.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
+#include <chrono>
+#include <condition_variable>
+#include <mutex>
+
+#include "wifi_hidl_call_util.h"
+#include "wifi_hidl_test_utils.h"
+
+using namespace ::android::hardware::wifi::V1_0;
+using namespace ::android::hardware::wifi::V1_2;
+using namespace ::android::hardware::wifi::V1_4;
+
+using ::android::sp;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+
+#define TIMEOUT_PERIOD 10
+
+android::sp<android::hardware::wifi::V1_4::IWifiNanIface> getWifiNanIface_1_4(
+    const std::string& instance_name) {
+    return android::hardware::wifi::V1_4::IWifiNanIface::castFrom(
+        getWifiNanIface(instance_name));
+}
+
+/**
+ * Fixture to use for all NAN Iface HIDL interface tests.
+ */
+class WifiNanIfaceHidlTest : public ::testing::TestWithParam<std::string> {
+   public:
+    virtual void SetUp() override {
+        // Make sure to start with a clean state
+        stopWifi(GetInstanceName());
+
+        iwifiNanIface = getWifiNanIface_1_4(GetInstanceName());
+        ASSERT_NE(nullptr, iwifiNanIface.get());
+        ASSERT_EQ(WifiStatusCode::SUCCESS,
+                  HIDL_INVOKE(iwifiNanIface, registerEventCallback_1_2,
+                              new WifiNanIfaceEventCallback(*this))
+                      .code);
+    }
+
+    virtual void TearDown() override { stopWifi(GetInstanceName()); }
+
+    /* Used as a mechanism to inform the test about data/event callback */
+    inline void notify() {
+        std::unique_lock<std::mutex> lock(mtx_);
+        count_++;
+        cv_.notify_one();
+    }
+
+    enum CallbackType {
+        INVALID = -2,
+        ANY_CALLBACK = -1,
+
+        NOTIFY_CAPABILITIES_RESPONSE = 0,
+        NOTIFY_ENABLE_RESPONSE,
+        NOTIFY_CONFIG_RESPONSE,
+        NOTIFY_DISABLE_RESPONSE,
+        NOTIFY_START_PUBLISH_RESPONSE,
+        NOTIFY_STOP_PUBLISH_RESPONSE,
+        NOTIFY_START_SUBSCRIBE_RESPONSE,
+        NOTIFY_STOP_SUBSCRIBE_RESPONSE,
+        NOTIFY_TRANSMIT_FOLLOWUP_RESPONSE,
+        NOTIFY_CREATE_DATA_INTERFACE_RESPONSE,
+        NOTIFY_DELETE_DATA_INTERFACE_RESPONSE,
+        NOTIFY_INITIATE_DATA_PATH_RESPONSE,
+        NOTIFY_RESPOND_TO_DATA_PATH_INDICATION_RESPONSE,
+        NOTIFY_TERMINATE_DATA_PATH_RESPONSE,
+
+        EVENT_CLUSTER_EVENT,
+        EVENT_DISABLED,
+        EVENT_PUBLISH_TERMINATED,
+        EVENT_SUBSCRIBE_TERMINATED,
+        EVENT_MATCH,
+        EVENT_MATCH_EXPIRED,
+        EVENT_FOLLOWUP_RECEIVED,
+        EVENT_TRANSMIT_FOLLOWUP,
+        EVENT_DATA_PATH_REQUEST,
+        EVENT_DATA_PATH_CONFIRM,
+        EVENT_DATA_PATH_TERMINATED,
+        EVENT_DATA_PATH_CONFIRM_1_2,
+        EVENT_DATA_PATH_SCHEDULE_UPDATE
+    };
+
+    /* Test code calls this function to wait for data/event callback */
+    /* Must set callbackType = INVALID before call this function */
+    inline std::cv_status wait(CallbackType waitForCallbackType) {
+        std::unique_lock<std::mutex> lock(mtx_);
+
+        EXPECT_NE(INVALID, waitForCallbackType);  // can't ASSERT in a
+                                                  // non-void-returning method
+
+        std::cv_status status = std::cv_status::no_timeout;
+        auto now = std::chrono::system_clock::now();
+        while (count_ == 0) {
+            status = cv_.wait_until(lock,
+                                    now + std::chrono::seconds(TIMEOUT_PERIOD));
+            if (status == std::cv_status::timeout) return status;
+            if (waitForCallbackType != ANY_CALLBACK &&
+                callbackType != INVALID &&
+                callbackType != waitForCallbackType) {
+                count_--;
+            }
+        }
+        count_--;
+        return status;
+    }
+
+    class WifiNanIfaceEventCallback
+        : public ::android::hardware::wifi::V1_2::IWifiNanIfaceEventCallback {
+        WifiNanIfaceHidlTest& parent_;
+
+       public:
+        WifiNanIfaceEventCallback(WifiNanIfaceHidlTest& parent)
+            : parent_(parent){};
+
+        virtual ~WifiNanIfaceEventCallback() = default;
+
+        Return<void> notifyCapabilitiesResponse(
+            uint16_t id, const WifiNanStatus& status,
+            const NanCapabilities& capabilities) override {
+            parent_.callbackType = NOTIFY_CAPABILITIES_RESPONSE;
+
+            parent_.id = id;
+            parent_.status = status;
+            parent_.capabilities = capabilities;
+
+            parent_.notify();
+            return Void();
+        }
+
+        Return<void> notifyEnableResponse(
+            uint16_t id, const WifiNanStatus& status) override {
+            parent_.callbackType = NOTIFY_ENABLE_RESPONSE;
+
+            parent_.id = id;
+            parent_.status = status;
+
+            parent_.notify();
+            return Void();
+        }
+
+        Return<void> notifyConfigResponse(
+            uint16_t id, const WifiNanStatus& status) override {
+            parent_.callbackType = NOTIFY_CONFIG_RESPONSE;
+
+            parent_.id = id;
+            parent_.status = status;
+
+            parent_.notify();
+            return Void();
+        }
+
+        Return<void> notifyDisableResponse(
+            uint16_t id, const WifiNanStatus& status) override {
+            parent_.callbackType = NOTIFY_DISABLE_RESPONSE;
+
+            parent_.id = id;
+            parent_.status = status;
+
+            parent_.notify();
+            return Void();
+        }
+
+        Return<void> notifyStartPublishResponse(uint16_t id,
+                                                const WifiNanStatus& status,
+                                                uint8_t sessionId) override {
+            parent_.callbackType = NOTIFY_START_PUBLISH_RESPONSE;
+
+            parent_.id = id;
+            parent_.status = status;
+            parent_.sessionId = sessionId;
+
+            parent_.notify();
+            return Void();
+        }
+
+        Return<void> notifyStopPublishResponse(
+            uint16_t id, const WifiNanStatus& status) override {
+            parent_.callbackType = NOTIFY_STOP_PUBLISH_RESPONSE;
+
+            parent_.id = id;
+            parent_.status = status;
+
+            parent_.notify();
+            return Void();
+        }
+
+        Return<void> notifyStartSubscribeResponse(uint16_t id,
+                                                  const WifiNanStatus& status,
+                                                  uint8_t sessionId) override {
+            parent_.callbackType = NOTIFY_START_SUBSCRIBE_RESPONSE;
+
+            parent_.id = id;
+            parent_.status = status;
+            parent_.sessionId = sessionId;
+
+            parent_.notify();
+            return Void();
+        }
+
+        Return<void> notifyStopSubscribeResponse(
+            uint16_t id, const WifiNanStatus& status) override {
+            parent_.callbackType = NOTIFY_STOP_SUBSCRIBE_RESPONSE;
+
+            parent_.id = id;
+            parent_.status = status;
+
+            parent_.notify();
+            return Void();
+        }
+
+        Return<void> notifyTransmitFollowupResponse(
+            uint16_t id, const WifiNanStatus& status) override {
+            parent_.callbackType = NOTIFY_TRANSMIT_FOLLOWUP_RESPONSE;
+
+            parent_.id = id;
+            parent_.status = status;
+
+            parent_.notify();
+            return Void();
+        }
+
+        Return<void> notifyCreateDataInterfaceResponse(
+            uint16_t id, const WifiNanStatus& status) override {
+            parent_.callbackType = NOTIFY_CREATE_DATA_INTERFACE_RESPONSE;
+
+            parent_.id = id;
+            parent_.status = status;
+
+            parent_.notify();
+            return Void();
+        }
+
+        Return<void> notifyDeleteDataInterfaceResponse(
+            uint16_t id, const WifiNanStatus& status) override {
+            parent_.callbackType = NOTIFY_DELETE_DATA_INTERFACE_RESPONSE;
+
+            parent_.id = id;
+            parent_.status = status;
+
+            parent_.notify();
+            return Void();
+        }
+
+        Return<void> notifyInitiateDataPathResponse(
+            uint16_t id, const WifiNanStatus& status,
+            uint32_t ndpInstanceId) override {
+            parent_.callbackType = NOTIFY_INITIATE_DATA_PATH_RESPONSE;
+
+            parent_.id = id;
+            parent_.status = status;
+            parent_.ndpInstanceId = ndpInstanceId;
+
+            parent_.notify();
+            return Void();
+        }
+
+        Return<void> notifyRespondToDataPathIndicationResponse(
+            uint16_t id, const WifiNanStatus& status) override {
+            parent_.callbackType =
+                NOTIFY_RESPOND_TO_DATA_PATH_INDICATION_RESPONSE;
+
+            parent_.id = id;
+            parent_.status = status;
+
+            parent_.notify();
+            return Void();
+        }
+
+        Return<void> notifyTerminateDataPathResponse(
+            uint16_t id, const WifiNanStatus& status) override {
+            parent_.callbackType = NOTIFY_TERMINATE_DATA_PATH_RESPONSE;
+
+            parent_.id = id;
+            parent_.status = status;
+
+            parent_.notify();
+            return Void();
+        }
+
+        Return<void> eventClusterEvent(
+            const NanClusterEventInd& event) override {
+            parent_.callbackType = EVENT_CLUSTER_EVENT;
+
+            parent_.nanClusterEventInd = event;
+
+            parent_.notify();
+            return Void();
+        }
+
+        Return<void> eventDisabled(const WifiNanStatus& status) override {
+            parent_.callbackType = EVENT_DISABLED;
+
+            parent_.status = status;
+
+            parent_.notify();
+            return Void();
+        }
+
+        Return<void> eventPublishTerminated(
+            uint8_t sessionId, const WifiNanStatus& status) override {
+            parent_.callbackType = EVENT_PUBLISH_TERMINATED;
+
+            parent_.sessionId = sessionId;
+            parent_.status = status;
+
+            parent_.notify();
+            return Void();
+        }
+
+        Return<void> eventSubscribeTerminated(
+            uint8_t sessionId, const WifiNanStatus& status) override {
+            parent_.callbackType = EVENT_SUBSCRIBE_TERMINATED;
+
+            parent_.sessionId = sessionId;
+            parent_.status = status;
+
+            parent_.notify();
+            return Void();
+        }
+
+        Return<void> eventMatch(const NanMatchInd& event) override {
+            parent_.callbackType = EVENT_MATCH;
+
+            parent_.nanMatchInd = event;
+
+            parent_.notify();
+            return Void();
+        }
+
+        Return<void> eventMatchExpired(uint8_t discoverySessionId,
+                                       uint32_t peerId) override {
+            parent_.callbackType = EVENT_MATCH_EXPIRED;
+
+            parent_.sessionId = discoverySessionId;
+            parent_.peerId = peerId;
+
+            parent_.notify();
+            return Void();
+        }
+
+        Return<void> eventFollowupReceived(
+            const NanFollowupReceivedInd& event) override {
+            parent_.callbackType = EVENT_FOLLOWUP_RECEIVED;
+
+            parent_.nanFollowupReceivedInd = event;
+
+            parent_.notify();
+            return Void();
+        }
+
+        Return<void> eventTransmitFollowup(
+            uint16_t id, const WifiNanStatus& status) override {
+            parent_.callbackType = EVENT_TRANSMIT_FOLLOWUP;
+
+            parent_.id = id;
+            parent_.status = status;
+
+            parent_.notify();
+            return Void();
+        }
+
+        Return<void> eventDataPathRequest(
+            const NanDataPathRequestInd& event) override {
+            parent_.callbackType = EVENT_DATA_PATH_REQUEST;
+
+            parent_.nanDataPathRequestInd = event;
+
+            parent_.notify();
+            return Void();
+        }
+
+        Return<void> eventDataPathConfirm(
+            const ::android::hardware::wifi::V1_0::NanDataPathConfirmInd& event)
+            override {
+            parent_.callbackType = EVENT_DATA_PATH_CONFIRM;
+
+            parent_.nanDataPathConfirmInd = event;
+
+            parent_.notify();
+            return Void();
+        }
+
+        Return<void> eventDataPathTerminated(uint32_t ndpInstanceId) override {
+            parent_.callbackType = EVENT_DATA_PATH_TERMINATED;
+
+            parent_.ndpInstanceId = ndpInstanceId;
+
+            parent_.notify();
+            return Void();
+        }
+
+        Return<void> eventDataPathConfirm_1_2(
+            const ::android::hardware::wifi::V1_2::NanDataPathConfirmInd& event)
+            override {
+            parent_.callbackType = EVENT_DATA_PATH_CONFIRM_1_2;
+
+            parent_.nanDataPathConfirmInd_1_2 = event;
+
+            parent_.notify();
+            return Void();
+        }
+
+        Return<void> eventDataPathScheduleUpdate(
+            const NanDataPathScheduleUpdateInd& event) override {
+            parent_.callbackType = EVENT_DATA_PATH_SCHEDULE_UPDATE;
+
+            parent_.nanDataPathScheduleUpdateInd = event;
+
+            parent_.notify();
+            return Void();
+        }
+    };
+
+   private:
+    // synchronization objects
+    std::mutex mtx_;
+    std::condition_variable cv_;
+    int count_;
+
+   protected:
+    android::sp<::android::hardware::wifi::V1_4::IWifiNanIface> iwifiNanIface;
+
+    // Data from IWifiNanIfaceEventCallback callbacks: this is the collection of
+    // all arguments to all callbacks. They are set by the callback
+    // (notifications or events) and can be retrieved by tests.
+    CallbackType callbackType;
+    uint16_t id;
+    WifiNanStatus status;
+    NanCapabilities capabilities;
+    uint8_t sessionId;
+    uint32_t ndpInstanceId;
+    NanClusterEventInd nanClusterEventInd;
+    NanMatchInd nanMatchInd;
+    uint32_t peerId;
+    NanFollowupReceivedInd nanFollowupReceivedInd;
+    NanDataPathRequestInd nanDataPathRequestInd;
+    ::android::hardware::wifi::V1_0::NanDataPathConfirmInd
+        nanDataPathConfirmInd;
+    ::android::hardware::wifi::V1_2::NanDataPathConfirmInd
+        nanDataPathConfirmInd_1_2;
+    NanDataPathScheduleUpdateInd nanDataPathScheduleUpdateInd;
+
+    std::string GetInstanceName() { return GetParam(); }
+};
+
+/*
+ * Create:
+ * Ensures that an instance of the IWifiNanIface proxy object is
+ * successfully created.
+ */
+TEST_P(WifiNanIfaceHidlTest, Create) {
+    // The creation of a proxy object is tested as part of SetUp method.
+}
+
+/*
+ * enableRequest_1_4InvalidArgs: validate that fails with invalid arguments
+ */
+TEST_P(WifiNanIfaceHidlTest, enableRequest_1_4InvalidArgs) {
+    uint16_t inputCmdId = 10;
+    callbackType = INVALID;
+    ::android::hardware::wifi::V1_4::NanEnableRequest nanEnableRequest = {};
+    NanConfigRequestSupplemental nanConfigRequestSupp = {};
+    ASSERT_EQ(WifiStatusCode::SUCCESS,
+              HIDL_INVOKE(iwifiNanIface, enableRequest_1_4, inputCmdId,
+                          nanEnableRequest, nanConfigRequestSupp)
+                  .code);
+    // wait for a callback
+    ASSERT_EQ(std::cv_status::no_timeout, wait(NOTIFY_ENABLE_RESPONSE));
+    ASSERT_EQ(NOTIFY_ENABLE_RESPONSE, callbackType);
+    ASSERT_EQ(id, inputCmdId);
+    ASSERT_EQ(status.status, NanStatusType::INVALID_ARGS);
+}
+
+/*
+ * enableRequest_1_4ShimInvalidArgs: validate that fails with invalid arguments
+ * to the shim
+ */
+TEST_P(WifiNanIfaceHidlTest, enableRequest_1_4ShimInvalidArgs) {
+    uint16_t inputCmdId = 10;
+    ::android::hardware::wifi::V1_4::NanEnableRequest nanEnableRequest = {};
+    nanEnableRequest.configParams.numberOfPublishServiceIdsInBeacon =
+        128;  // must be <= 127
+    NanConfigRequestSupplemental nanConfigRequestSupp = {};
+    ASSERT_EQ(WifiStatusCode::ERROR_INVALID_ARGS,
+              HIDL_INVOKE(iwifiNanIface, enableRequest_1_4, inputCmdId,
+                          nanEnableRequest, nanConfigRequestSupp)
+                  .code);
+}
+
+/*
+ * configRequest_1_4InvalidArgs: validate that fails with invalid arguments
+ */
+TEST_P(WifiNanIfaceHidlTest, configRequest_1_4InvalidArgs) {
+    uint16_t inputCmdId = 10;
+    callbackType = INVALID;
+    ::android::hardware::wifi::V1_4::NanConfigRequest nanConfigRequest = {};
+    NanConfigRequestSupplemental nanConfigRequestSupp = {};
+    ASSERT_EQ(WifiStatusCode::SUCCESS,
+              HIDL_INVOKE(iwifiNanIface, configRequest_1_4, inputCmdId,
+                          nanConfigRequest, nanConfigRequestSupp)
+                  .code);
+    // wait for a callback
+    ASSERT_EQ(std::cv_status::no_timeout, wait(NOTIFY_CONFIG_RESPONSE));
+    ASSERT_EQ(NOTIFY_CONFIG_RESPONSE, callbackType);
+    ASSERT_EQ(id, inputCmdId);
+    ASSERT_EQ(status.status, NanStatusType::INVALID_ARGS);
+}
+
+/*
+ * configRequest_1_4ShimInvalidArgs: validate that fails with invalid arguments
+ * to the shim
+ */
+TEST_P(WifiNanIfaceHidlTest, configRequest_1_4ShimInvalidArgs) {
+    uint16_t inputCmdId = 10;
+    ::android::hardware::wifi::V1_4::NanConfigRequest nanConfigRequest = {};
+    nanConfigRequest.numberOfPublishServiceIdsInBeacon = 128;  // must be <= 127
+    NanConfigRequestSupplemental nanConfigRequestSupp = {};
+    ASSERT_EQ(WifiStatusCode::ERROR_INVALID_ARGS,
+              HIDL_INVOKE(iwifiNanIface, configRequest_1_4, inputCmdId,
+                          nanConfigRequest, nanConfigRequestSupp)
+                  .code);
+}
diff --git a/wifi/hostapd/1.1/vts/functional/hostapd_hidl_test.cpp b/wifi/hostapd/1.1/vts/functional/hostapd_hidl_test.cpp
index 1804d8c..345cf31 100644
--- a/wifi/hostapd/1.1/vts/functional/hostapd_hidl_test.cpp
+++ b/wifi/hostapd/1.1/vts/functional/hostapd_hidl_test.cpp
@@ -233,7 +233,11 @@
 TEST_P(HostapdHidlTest, AddPskAccessPointWithoutAcs) {
     auto status = HIDL_INVOKE(hostapd_, addAccessPoint_1_1,
                               getIfaceParamsWithoutAcs(), getPskNwParams());
-    EXPECT_EQ(HostapdStatusCode::SUCCESS, status.code);
+    // FAILURE_UNKNOWN is used by higher versions to indicate this API is no
+    // longer supported (replaced by an upgraded API)
+    if (status.code != HostapdStatusCode::FAILURE_UNKNOWN) {
+        EXPECT_EQ(HostapdStatusCode::SUCCESS, status.code);
+    }
 }
 
 /**
@@ -243,7 +247,11 @@
 TEST_P(HostapdHidlTest, AddOpenAccessPointWithoutAcs) {
     auto status = HIDL_INVOKE(hostapd_, addAccessPoint_1_1,
                               getIfaceParamsWithoutAcs(), getOpenNwParams());
-    EXPECT_EQ(HostapdStatusCode::SUCCESS, status.code);
+    // FAILURE_UNKNOWN is used by higher versions to indicate this API is no
+    // longer supported (replaced by an upgraded API)
+    if (status.code != HostapdStatusCode::FAILURE_UNKNOWN) {
+        EXPECT_EQ(HostapdStatusCode::SUCCESS, status.code);
+    }
 }
 
 /**
@@ -269,10 +277,14 @@
 TEST_P(HostapdHidlTest, RemoveAccessPointWithoutAcs) {
     auto status = HIDL_INVOKE(hostapd_, addAccessPoint_1_1,
                               getIfaceParamsWithoutAcs(), getPskNwParams());
-    EXPECT_EQ(HostapdStatusCode::SUCCESS, status.code);
-    status =
-        HIDL_INVOKE(hostapd_, removeAccessPoint, getPrimaryWlanIfaceName());
-    EXPECT_EQ(HostapdStatusCode::SUCCESS, status.code);
+    // FAILURE_UNKNOWN is used by higher versions to indicate this API is no
+    // longer supported (replaced by an upgraded API)
+    if (status.code != HostapdStatusCode::FAILURE_UNKNOWN) {
+        EXPECT_EQ(HostapdStatusCode::SUCCESS, status.code);
+        status =
+            HIDL_INVOKE(hostapd_, removeAccessPoint, getPrimaryWlanIfaceName());
+        EXPECT_EQ(HostapdStatusCode::SUCCESS, status.code);
+    }
 }
 
 /**
diff --git a/wifi/hostapd/1.2/Android.bp b/wifi/hostapd/1.2/Android.bp
new file mode 100644
index 0000000..3dcad71
--- /dev/null
+++ b/wifi/hostapd/1.2/Android.bp
@@ -0,0 +1,20 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.wifi.hostapd@1.2",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "types.hal",
+        "IHostapd.hal",
+    ],
+    interfaces: [
+        "android.hardware.wifi.hostapd@1.0",
+        "android.hardware.wifi.hostapd@1.1",
+        "android.hardware.wifi.supplicant@1.0",
+        "android.hidl.base@1.0",
+    ],
+    gen_java: true,
+}
diff --git a/wifi/hostapd/1.2/IHostapd.hal b/wifi/hostapd/1.2/IHostapd.hal
new file mode 100644
index 0000000..0869da0
--- /dev/null
+++ b/wifi/hostapd/1.2/IHostapd.hal
@@ -0,0 +1,217 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi.hostapd@1.2;
+
+import @1.0::IHostapd.EncryptionType;
+import @1.0::IHostapd.NetworkParams;
+import @1.1::IHostapd;
+import HostapdStatus;
+import MacAddress;
+import Ieee80211ReasonCode;
+import DebugLevel;
+
+/**
+ * Top-level object for managing SoftAPs.
+ */
+interface IHostapd extends @1.1::IHostapd {
+    /** Possible Security types. */
+    enum EncryptionType : @1.0::IHostapd.EncryptionType {
+        WPA3_SAE_TRANSITION,
+        WPA3_SAE,
+    };
+
+    /**
+     * Band bitmMask to use for the SoftAp operations.
+     * A combinatoin of these bits are used to identify the allowed bands
+     * to start the softAp
+     */
+    enum BandMask : uint32_t {
+        /**
+         * 2.4 GHz band.
+         */
+        BAND_2_GHZ = 1 << 0,
+        /**
+         * 5 GHz band.
+         */
+        BAND_5_GHZ = 1 << 1,
+        /**
+         * 6 GHz band.
+         */
+        BAND_6_GHZ = 1 << 2,
+    };
+
+    /**
+     * Parameters to control the HW mode for the interface.
+     */
+    struct HwModeParams {
+        /**
+         * Whether IEEE 802.11ax (HE) is enabled or not.
+         * Note: hw_mode=a is used to specify that 5 GHz band or 6 GHz band is
+         * used with HE.
+         */
+        bool enable80211AX;
+
+        /**
+         * Whether 6GHz band enabled or not on softAp.
+         * Note: hw_mode=a is used to specify that 5 GHz band or 6 GHz band is
+         * used.
+         */
+        bool enable6GhzBand;
+
+        /**
+         * Whether HE single user beamformer in enabled or not on softAp.
+         * Note: this is only applicable if 802.11ax is supported for softAp
+         */
+        bool enableHeSingleUserBeamformer;
+
+        /**
+         * Whether HE single user beamformee is enabled or not on softAp.
+         * Note: this is only applicable if 802.11ax is supported for softAp
+         */
+        bool enableHeSingleUserBeamformee;
+
+        /**
+         * Whether HE multiple user beamformer is enabled or not on softAp.
+         * Note: this is only applicable if 802.11ax is supported for softAp
+         */
+        bool enableHeMultiUserBeamformer;
+
+        /**
+         * Whether HE Target Wait Time (TWT) is enabled or not on softAp.
+         * Note: this is only applicable if 802.11ax is supported for softAp
+         */
+        bool enableHeTargetWakeTime;
+    };
+
+    /**
+     * Parameters to specify the channel frequency range for ACS.
+     */
+    struct AcsFrequencyRange {
+        /**
+         * Channel Frequency (in MHz) at the start of the range.
+         */
+        uint32_t start;
+
+        /**
+         * Channel Frequency (in MHz) at the end of the range.
+         */
+        uint32_t end;
+    };
+
+    /**
+     * Parameters to control the channel selection for the interface.
+     */
+    struct ChannelParams {
+        /**
+         * Band to use for the SoftAp operations.
+         */
+        bitfield<BandMask> bandMask;
+
+        /**
+         * This option can be used to specify the channel frequencies (in MHz) selected by ACS.
+         * If this is an empty list, all channels allowed in selected HW mode
+         * are specified implicitly.
+         * Note: channels may be overridden by firmware.
+         * Note: this option is ignored if ACS is disabled.
+         */
+        vec<AcsFrequencyRange> acsChannelFreqRangesMhz;
+    };
+
+    /**
+     * Parameters to use for setting up the access point interface.
+     */
+    struct IfaceParams {
+        /**
+         * Baseline information as defined in HAL 1.1.
+         */
+        @1.1::IHostapd.IfaceParams V1_1;
+
+        /**
+         * Additional Hw mode params for the interface
+         */
+        HwModeParams hwModeParams;
+
+        /**
+         * Additional Channel params for the interface
+         */
+        ChannelParams channelParams;
+    };
+
+    /**
+     * Parameters to use for setting up the access point network.
+     */
+    struct NetworkParams {
+        /**
+         * Baseline information as defined in HAL 1.0.
+         */
+        @1.0::IHostapd.NetworkParams V1_0;
+        /** Key management mask for the replace V1_0.encryptionType. */
+        EncryptionType encryptionType;
+        /**
+         * Passphrase for WPA3_SAE network, WPA3_SAE_TRANSITION and
+         * WPA2_PSK. Replaces @1.0::IHostapd.NetworkParams.pskPassphrase.
+         */
+        string passphrase;
+    };
+
+
+    /**
+     * Adds a new access point for hostapd to control.
+     *
+     * This should trigger the setup of an access point with the specified
+     * interface and network params.
+     *
+     * @param ifaceParams AccessPoint Params for the access point.
+     * @param nwParams Network Params for the access point.
+     * @return status Status of the operation.
+     *         Possible status codes:
+     *         |HostapdStatusCode.SUCCESS|,
+     *         |HostapdStatusCode.FAILURE_ARGS_INVALID|,
+     *         |HostapdStatusCode.FAILURE_UNKNOWN|,
+     *         |HostapdStatusCode.FAILURE_IFACE_EXISTS|
+     */
+    addAccessPoint_1_2(IfaceParams ifaceParams, NetworkParams nwParams)
+        generates (HostapdStatus status);
+
+    /**
+     * force one of the hotspot clients disconnect..
+     *
+     * @param ifaceName Name of the interface.
+     * @param clientAddress Mac Address of the hotspot client.
+     * @param reasonCode One of disconnect reason code which defined by 802.11.
+     * @return status Status of the operation.
+     *         Possible status codes:
+     *         |HostapdStatusCode.SUCCESS|,
+     *         |HostapdStatusCode.FAILURE_IFACE_UNKNOWN|
+     *         |HostapdStatusCode.FAILURE_CLIENT_UNKNOWN|
+     */
+    forceClientDisconnect(string ifaceName, MacAddress clientAddress,
+        Ieee80211ReasonCode reasonCode) generates (HostapdStatus status);
+
+    /**
+     * Set debug parameters for the hostapd.
+     *
+     * @param level Debug logging level for the hostapd.
+     *        (one of |DebugLevel| values).
+     * @return status Status of the operation.
+     *         Possible status codes:
+     *         |HostapdStatusCode.SUCCESS|,
+     *         |HostapdStatusCode.FAILURE_UNKNOWN|
+     */
+    setDebugParams(DebugLevel level)
+        generates (HostapdStatus status);
+};
diff --git a/wifi/hostapd/1.2/types.hal b/wifi/hostapd/1.2/types.hal
new file mode 100644
index 0000000..54e6529
--- /dev/null
+++ b/wifi/hostapd/1.2/types.hal
@@ -0,0 +1,69 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi.hostapd@1.2;
+
+import @1.0::HostapdStatusCode;
+
+/**
+ * Enum values indicating the status of any hostapd operation.
+ */
+enum HostapdStatusCode : @1.0::HostapdStatusCode {
+    /**
+     * Failure because unknown the client.
+     */
+    FAILURE_CLIENT_UNKNOWN,
+};
+
+/**
+ * Enum values indicating the reason code for disconnect packet.
+ * Reason codes (IEEE Std 802.11-2016, 9.4.1.7, Table 9-45).
+ */
+enum Ieee80211ReasonCode : uint16_t {
+    WLAN_REASON_UNSPECIFIED = 1,
+    WLAN_REASON_PREV_AUTH_NOT_VALID = 2,
+    WLAN_REASON_DISASSOC_AP_BUSY = 5,
+};
+
+typedef uint8_t[6] MacAddress;
+
+/**
+ * Generic structure to return the status of any hostapd operation.
+ */
+struct HostapdStatus {
+    HostapdStatusCode code;
+
+    /**
+     * A vendor-specific error message to provide more information beyond the
+     * status code.
+     * This must be used for debugging purposes only.
+     */
+    string debugMessage;
+};
+
+/**
+ * Debug levels for the hostapd.
+ * Only log messages with a level greater than the set level
+ * (via |setDebugParams|) will be logged.
+ */
+enum DebugLevel : uint32_t {
+    EXCESSIVE = 0,
+    MSGDUMP = 1,
+    DEBUG = 2,
+    INFO = 3,
+    WARNING = 4,
+    ERROR = 5
+};
diff --git a/wifi/1.3/default/OWNERS b/wifi/hostapd/1.2/vts/OWNERS
similarity index 100%
copy from wifi/1.3/default/OWNERS
copy to wifi/hostapd/1.2/vts/OWNERS
diff --git a/wifi/hostapd/1.2/vts/functional/Android.bp b/wifi/hostapd/1.2/vts/functional/Android.bp
new file mode 100644
index 0000000..50cfdee
--- /dev/null
+++ b/wifi/hostapd/1.2/vts/functional/Android.bp
@@ -0,0 +1,37 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_test {
+    name: "VtsHalWifiHostapdV1_2TargetTest",
+    defaults: ["VtsHalTargetTestDefaults"],
+    srcs: [
+        "VtsHalWifiHostapdV1_2TargetTest.cpp",
+        "hostapd_hidl_test.cpp",
+    ],
+    static_libs: [
+        "VtsHalWifiV1_0TargetTestUtil",
+        "VtsHalWifiHostapdV1_0TargetTestUtil",
+        "android.hardware.wifi.hostapd@1.0",
+        "android.hardware.wifi.hostapd@1.1",
+	"android.hardware.wifi.hostapd@1.2",
+        "android.hardware.wifi@1.0",
+        "libgmock",
+        "libwifi-system",
+        "libwifi-system-iface",
+    ],
+    test_suites: ["general-tests", "vts-core"],
+}
+
diff --git a/wifi/hostapd/1.2/vts/functional/VtsHalWifiHostapdV1_2TargetTest.cpp b/wifi/hostapd/1.2/vts/functional/VtsHalWifiHostapdV1_2TargetTest.cpp
new file mode 100644
index 0000000..7e0f3cd
--- /dev/null
+++ b/wifi/hostapd/1.2/vts/functional/VtsHalWifiHostapdV1_2TargetTest.cpp
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <VtsHalHidlTargetTestEnvBase.h>
+
+// TODO(b/143892896): Remove this file after wifi_hidl_test_utils.cpp is
+// updated.
+::testing::VtsHalHidlTargetTestEnvBase* gEnv = nullptr;
\ No newline at end of file
diff --git a/wifi/hostapd/1.2/vts/functional/hostapd_hidl_test.cpp b/wifi/hostapd/1.2/vts/functional/hostapd_hidl_test.cpp
new file mode 100644
index 0000000..9f57934
--- /dev/null
+++ b/wifi/hostapd/1.2/vts/functional/hostapd_hidl_test.cpp
@@ -0,0 +1,411 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+#include <cutils/properties.h>
+
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
+
+#include <android/hardware/wifi/1.0/IWifi.h>
+#include <android/hardware/wifi/hostapd/1.2/IHostapd.h>
+
+#include "hostapd_hidl_call_util.h"
+#include "hostapd_hidl_test_utils.h"
+
+using ::android::sp;
+using ::android::hardware::hidl_string;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::wifi::hostapd::V1_2::DebugLevel;
+using ::android::hardware::wifi::hostapd::V1_2::HostapdStatusCode;
+using ::android::hardware::wifi::hostapd::V1_2::Ieee80211ReasonCode;
+using ::android::hardware::wifi::hostapd::V1_2::IHostapd;
+using ::android::hardware::wifi::V1_0::IWifi;
+
+namespace {
+constexpr unsigned char kNwSsid[] = {'t', 'e', 's', 't', '1',
+                                     '2', '3', '4', '5'};
+constexpr char kNwPassphrase[] = "test12345";
+constexpr char kInvalidMaxPskNwPassphrase[] =
+    "0123456789012345678901234567890123456789012345678901234567890123456789";
+constexpr char kInvalidMinPskNwPassphrase[] = "test";
+constexpr int kIfaceChannel = 6;
+constexpr int kIfaceInvalidChannel = 567;
+constexpr uint8_t kTestZeroMacAddr[] = {[0 ... 5] = 0x0};
+constexpr Ieee80211ReasonCode kTestDisconnectReasonCode =
+    Ieee80211ReasonCode::WLAN_REASON_UNSPECIFIED;
+}  // namespace
+
+class HostapdHidlTest
+    : public ::testing::TestWithParam<std::tuple<std::string, std::string>> {
+   public:
+    virtual void SetUp() override {
+        wifi_instance_name_ = std::get<0>(GetParam());
+        hostapd_instance_name_ = std::get<1>(GetParam());
+        stopSupplicantIfNeeded(wifi_instance_name_);
+        startHostapdAndWaitForHidlService(wifi_instance_name_,
+                                          hostapd_instance_name_);
+        hostapd_ = IHostapd::getService(hostapd_instance_name_);
+        ASSERT_NE(hostapd_.get(), nullptr);
+    }
+
+    virtual void TearDown() override { stopHostapd(hostapd_instance_name_); }
+
+   protected:
+    std::string getPrimaryWlanIfaceName() {
+        std::array<char, PROPERTY_VALUE_MAX> buffer;
+        auto res = property_get("ro.vendor.wifi.sap.interface", buffer.data(),
+                                nullptr);
+        if (res > 0) return buffer.data();
+        property_get("wifi.interface", buffer.data(), "wlan0");
+        return buffer.data();
+    }
+
+    IHostapd::IfaceParams getIfaceParamsWithoutAcs() {
+        ::android::hardware::wifi::hostapd::V1_0::IHostapd::IfaceParams
+            iface_params;
+        ::android::hardware::wifi::hostapd::V1_1::IHostapd::IfaceParams
+            iface_params_1_1;
+        IHostapd::IfaceParams iface_params_1_2;
+
+        iface_params.ifaceName = getPrimaryWlanIfaceName();
+        iface_params.hwModeParams.enable80211N = true;
+        iface_params.hwModeParams.enable80211AC = false;
+        iface_params.channelParams.enableAcs = false;
+        iface_params.channelParams.acsShouldExcludeDfs = false;
+        iface_params.channelParams.channel = kIfaceChannel;
+        iface_params_1_1.V1_0 = iface_params;
+        iface_params_1_2.V1_1 = iface_params_1_1;
+        // Newly added attributes in V1_2
+        iface_params_1_2.hwModeParams.enable80211AX = false;
+        iface_params_1_2.hwModeParams.enable6GhzBand = false;
+        iface_params_1_2.channelParams.bandMask = 0;
+        iface_params_1_2.channelParams.bandMask |=
+            IHostapd::BandMask::BAND_2_GHZ;
+        return iface_params_1_2;
+    }
+
+    IHostapd::IfaceParams getIfaceParamsWithAcs() {
+        // First get the settings for WithoutAcs and then make changes
+        IHostapd::IfaceParams iface_params_1_2 = getIfaceParamsWithoutAcs();
+        iface_params_1_2.V1_1.V1_0.channelParams.enableAcs = true;
+        iface_params_1_2.V1_1.V1_0.channelParams.acsShouldExcludeDfs = true;
+        iface_params_1_2.V1_1.V1_0.channelParams.channel = 0;
+        iface_params_1_2.channelParams.bandMask |=
+            IHostapd::BandMask::BAND_5_GHZ;
+
+        return iface_params_1_2;
+    }
+
+    IHostapd::IfaceParams getIfaceParamsWithAcsAndFreqRange() {
+        IHostapd::IfaceParams iface_params_1_2 = getIfaceParamsWithAcs();
+        ::android::hardware::wifi::hostapd::V1_2::IHostapd::AcsFrequencyRange
+            acsFrequencyRange;
+        acsFrequencyRange.start = 2412;
+        acsFrequencyRange.end = 2462;
+        std::vector<::android::hardware::wifi::hostapd::V1_2::IHostapd::
+                        AcsFrequencyRange>
+            vec_acsFrequencyRange;
+        vec_acsFrequencyRange.push_back(acsFrequencyRange);
+        iface_params_1_2.channelParams.acsChannelFreqRangesMhz =
+            vec_acsFrequencyRange;
+        return iface_params_1_2;
+    }
+
+    IHostapd::IfaceParams getIfaceParamsWithAcsAndInvalidFreqRange() {
+        IHostapd::IfaceParams iface_params_1_2 =
+            getIfaceParamsWithAcsAndFreqRange();
+        iface_params_1_2.channelParams.acsChannelFreqRangesMhz[0].start = 222;
+        iface_params_1_2.channelParams.acsChannelFreqRangesMhz[0].end = 999;
+        return iface_params_1_2;
+    }
+
+    IHostapd::NetworkParams getOpenNwParams() {
+        IHostapd::NetworkParams nw_params_1_2;
+        ::android::hardware::wifi::hostapd::V1_0::IHostapd::NetworkParams
+            nw_params_1_0;
+        nw_params_1_0.ssid =
+            std::vector<uint8_t>(kNwSsid, kNwSsid + sizeof(kNwSsid));
+        nw_params_1_0.isHidden = false;
+        nw_params_1_2.V1_0 = nw_params_1_0;
+        nw_params_1_2.encryptionType = IHostapd::EncryptionType::NONE;
+        return nw_params_1_2;
+    }
+
+    IHostapd::NetworkParams getPskNwParams() {
+        IHostapd::NetworkParams nw_params_1_2 = getOpenNwParams();
+        nw_params_1_2.encryptionType = IHostapd::EncryptionType::WPA2;
+        nw_params_1_2.passphrase = kNwPassphrase;
+        return nw_params_1_2;
+    }
+
+    IHostapd::NetworkParams getInvalidPskNwParams() {
+        IHostapd::NetworkParams nw_params_1_2 = getOpenNwParams();
+        nw_params_1_2.encryptionType = IHostapd::EncryptionType::WPA2;
+        nw_params_1_2.passphrase = kInvalidMaxPskNwPassphrase;
+
+        return nw_params_1_2;
+    }
+
+    IHostapd::NetworkParams getSaeTransitionNwParams() {
+        IHostapd::NetworkParams nw_params_1_2 = getOpenNwParams();
+        nw_params_1_2.encryptionType =
+            IHostapd::EncryptionType::WPA3_SAE_TRANSITION;
+        nw_params_1_2.passphrase = kNwPassphrase;
+        return nw_params_1_2;
+    }
+
+    IHostapd::NetworkParams getInvalidSaeTransitionNwParams() {
+        IHostapd::NetworkParams nw_params_1_2 = getOpenNwParams();
+        nw_params_1_2.encryptionType = IHostapd::EncryptionType::WPA2;
+        nw_params_1_2.passphrase = kInvalidMinPskNwPassphrase;
+        return nw_params_1_2;
+    }
+
+    IHostapd::NetworkParams getSaeNwParams() {
+        IHostapd::NetworkParams nw_params_1_2 = getOpenNwParams();
+        nw_params_1_2.encryptionType = IHostapd::EncryptionType::WPA3_SAE;
+        nw_params_1_2.passphrase = kNwPassphrase;
+        return nw_params_1_2;
+    }
+
+    IHostapd::NetworkParams getInvalidSaeNwParams() {
+        IHostapd::NetworkParams nw_params_1_2 = getOpenNwParams();
+        nw_params_1_2.encryptionType = IHostapd::EncryptionType::WPA3_SAE;
+        nw_params_1_2.passphrase = "";
+        return nw_params_1_2;
+    }
+
+    IHostapd::IfaceParams getIfaceParamsWithInvalidChannel() {
+        IHostapd::IfaceParams iface_params_1_2 = getIfaceParamsWithoutAcs();
+        iface_params_1_2.V1_1.V1_0.channelParams.channel = kIfaceInvalidChannel;
+        return iface_params_1_2;
+    }
+
+    // IHostapd object used for all tests in this fixture.
+    sp<IHostapd> hostapd_;
+    std::string wifi_instance_name_;
+    std::string hostapd_instance_name_;
+};
+
+/**
+ * Adds an access point with PSK network config & ACS enabled.
+ * Access point creation should pass.
+ */
+TEST_P(HostapdHidlTest, AddPskAccessPointWithAcs) {
+    auto status = HIDL_INVOKE(hostapd_, addAccessPoint_1_2,
+                              getIfaceParamsWithAcs(), getPskNwParams());
+    // TODO: b/140172237, fix this in R.
+    // EXPECT_EQ(HostapdStatusCode::SUCCESS, status.code);
+}
+
+/**
+ * Adds an access point with PSK network config, ACS enabled & frequency Range.
+ * Access point creation should pass.
+ */
+TEST_P(HostapdHidlTest, AddPskAccessPointWithAcsAndFreqRange) {
+    auto status =
+        HIDL_INVOKE(hostapd_, addAccessPoint_1_2,
+                    getIfaceParamsWithAcsAndFreqRange(), getPskNwParams());
+    // TODO: b/140172237, fix this in R
+    // EXPECT_EQ(HostapdStatusCode::SUCCESS, status.code);
+}
+
+/**
+ * Adds an access point with invalid channel range.
+ * Access point creation should fail.
+ */
+TEST_P(HostapdHidlTest, AddPskAccessPointWithAcsAndInvalidFreqRange) {
+    auto status = HIDL_INVOKE(hostapd_, addAccessPoint_1_2,
+                              getIfaceParamsWithAcsAndInvalidFreqRange(),
+                              getPskNwParams());
+    // TODO: b/140172237, fix this in R
+    // EXPECT_NE(HostapdStatusCode::SUCCESS, status.code);
+}
+
+/**
+ * Adds an access point with Open network config & ACS enabled.
+ * Access point creation should pass.
+ */
+TEST_P(HostapdHidlTest, AddOpenAccessPointWithAcs) {
+    auto status = HIDL_INVOKE(hostapd_, addAccessPoint_1_2,
+                              getIfaceParamsWithAcs(), getOpenNwParams());
+    // TODO: b/140172237, fix this in R
+    // EXPECT_EQ(HostapdStatusCode::SUCCESS, status.code);
+}
+
+/**
+ * Adds an access point with PSK network config & ACS disabled.
+ * Access point creation should pass.
+ */
+TEST_P(HostapdHidlTest, AddPskAccessPointWithoutAcs) {
+    auto status = HIDL_INVOKE(hostapd_, addAccessPoint_1_2,
+                              getIfaceParamsWithoutAcs(), getPskNwParams());
+    EXPECT_EQ(HostapdStatusCode::SUCCESS, status.code);
+}
+
+/**
+ * Adds an access point with Open network config & ACS disabled.
+ * Access point creation should pass.
+ */
+TEST_P(HostapdHidlTest, AddOpenAccessPointWithoutAcs) {
+    auto status = HIDL_INVOKE(hostapd_, addAccessPoint_1_2,
+                              getIfaceParamsWithoutAcs(), getOpenNwParams());
+    EXPECT_EQ(HostapdStatusCode::SUCCESS, status.code);
+}
+
+/**
+ * Adds an access point with SAE Transition network config & ACS disabled.
+ * Access point creation should pass.
+ */
+TEST_P(HostapdHidlTest, AddSaeTransitionAccessPointWithoutAcs) {
+    auto status =
+        HIDL_INVOKE(hostapd_, addAccessPoint_1_2, getIfaceParamsWithoutAcs(),
+                    getSaeTransitionNwParams());
+    EXPECT_EQ(HostapdStatusCode::SUCCESS, status.code);
+}
+
+/**
+ * Adds an access point with SAE network config & ACS disabled.
+ * Access point creation should pass.
+ */
+TEST_P(HostapdHidlTest, AddSAEAccessPointWithoutAcs) {
+    auto status = HIDL_INVOKE(hostapd_, addAccessPoint_1_2,
+                              getIfaceParamsWithoutAcs(), getSaeNwParams());
+    EXPECT_EQ(HostapdStatusCode::SUCCESS, status.code);
+}
+
+/**
+ * Adds & then removes an access point with PSK network config & ACS enabled.
+ * Access point creation & removal should pass.
+ */
+TEST_P(HostapdHidlTest, RemoveAccessPointWithAcs) {
+    auto status_1_2 = HIDL_INVOKE(hostapd_, addAccessPoint_1_2,
+                                  getIfaceParamsWithAcs(), getPskNwParams());
+    // TODO: b/140172237, fix this in R
+    /*
+    EXPECT_EQ(HostapdStatusCode::SUCCESS, status_1_2.code);
+    auto status =
+        HIDL_INVOKE(hostapd_, removeAccessPoint, getPrimaryWlanIfaceName());
+    EXPECT_EQ(android::hardware::wifi::hostapd::V1_0::HostapdStatusCode::SUCCESS,
+    status.code);
+    */
+}
+
+/**
+ * Adds & then removes an access point with PSK network config & ACS disabled.
+ * Access point creation & removal should pass.
+ */
+TEST_P(HostapdHidlTest, RemoveAccessPointWithoutAcs) {
+    auto status_1_2 = HIDL_INVOKE(hostapd_, addAccessPoint_1_2,
+                                  getIfaceParamsWithoutAcs(), getPskNwParams());
+    EXPECT_EQ(HostapdStatusCode::SUCCESS, status_1_2.code);
+    auto status =
+        HIDL_INVOKE(hostapd_, removeAccessPoint, getPrimaryWlanIfaceName());
+    EXPECT_EQ(
+        android::hardware::wifi::hostapd::V1_0::HostapdStatusCode::SUCCESS,
+        status.code);
+}
+
+/**
+ * Adds an access point with invalid channel.
+ * Access point creation should fail.
+ */
+TEST_P(HostapdHidlTest, AddPskAccessPointWithInvalidChannel) {
+    auto status =
+        HIDL_INVOKE(hostapd_, addAccessPoint_1_2,
+                    getIfaceParamsWithInvalidChannel(), getPskNwParams());
+    EXPECT_NE(HostapdStatusCode::SUCCESS, status.code);
+}
+
+/**
+ * Adds an access point with invalid PSK network config.
+ * Access point creation should fail.
+ */
+TEST_P(HostapdHidlTest, AddInvalidPskAccessPointWithoutAcs) {
+    auto status =
+        HIDL_INVOKE(hostapd_, addAccessPoint_1_2, getIfaceParamsWithoutAcs(),
+                    getInvalidPskNwParams());
+    EXPECT_NE(HostapdStatusCode::SUCCESS, status.code);
+}
+
+/**
+ * Adds an access point with invalid SAE transition network config.
+ * Access point creation should fail.
+ */
+TEST_P(HostapdHidlTest, AddInvalidSaeTransitionAccessPointWithoutAcs) {
+    auto status =
+        HIDL_INVOKE(hostapd_, addAccessPoint_1_2, getIfaceParamsWithoutAcs(),
+                    getInvalidSaeTransitionNwParams());
+    EXPECT_NE(HostapdStatusCode::SUCCESS, status.code);
+}
+
+/**
+ * Adds an access point with invalid SAE network config.
+ * Access point creation should fail.
+ */
+TEST_P(HostapdHidlTest, AddInvalidSaeAccessPointWithoutAcs) {
+    auto status =
+        HIDL_INVOKE(hostapd_, addAccessPoint_1_2, getIfaceParamsWithoutAcs(),
+                    getInvalidSaeNwParams());
+    EXPECT_NE(HostapdStatusCode::SUCCESS, status.code);
+}
+
+/**
+ * forceClientDisconnect should return FAILURE_IFACE_UNKNOWN
+ * when hotspot interface doesn't init..
+ */
+TEST_P(HostapdHidlTest, DisconnectClientWhenIfaceNotAvailable) {
+    auto status =
+        HIDL_INVOKE(hostapd_, forceClientDisconnect, getPrimaryWlanIfaceName(),
+                    kTestZeroMacAddr, kTestDisconnectReasonCode);
+    EXPECT_EQ(HostapdStatusCode::FAILURE_IFACE_UNKNOWN, status.code);
+}
+
+/**
+ * forceClientDisconnect should return FAILURE_CLIENT_UNKNOWN
+ * when hotspot interface available.
+ */
+TEST_P(HostapdHidlTest, DisconnectClientWhenIfacAvailable) {
+    auto status_1_2 =
+        HIDL_INVOKE(hostapd_, addAccessPoint_1_2, getIfaceParamsWithoutAcs(),
+                    getOpenNwParams());
+    EXPECT_EQ(HostapdStatusCode::SUCCESS, status_1_2.code);
+
+    status_1_2 =
+        HIDL_INVOKE(hostapd_, forceClientDisconnect, getPrimaryWlanIfaceName(),
+                    kTestZeroMacAddr, kTestDisconnectReasonCode);
+    EXPECT_EQ(HostapdStatusCode::FAILURE_CLIENT_UNKNOWN, status_1_2.code);
+}
+
+/*
+ * SetDebugParams
+ */
+TEST_P(HostapdHidlTest, SetDebugParams) {
+    auto status = HIDL_INVOKE(hostapd_, setDebugParams, DebugLevel::EXCESSIVE);
+    EXPECT_EQ(HostapdStatusCode::SUCCESS, status.code);
+}
+
+INSTANTIATE_TEST_CASE_P(
+    PerInstance, HostapdHidlTest,
+    testing::Combine(
+        testing::ValuesIn(
+            android::hardware::getAllHalInstanceNames(IWifi::descriptor)),
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(
+            android::hardware::wifi::hostapd::V1_2::IHostapd::descriptor))),
+    android::hardware::PrintInstanceTupleNameToString<>);
diff --git a/wifi/supplicant/1.0/vts/functional/supplicant_hidl_test_utils.cpp b/wifi/supplicant/1.0/vts/functional/supplicant_hidl_test_utils.cpp
index d47e42f..d0df4a4 100644
--- a/wifi/supplicant/1.0/vts/functional/supplicant_hidl_test_utils.cpp
+++ b/wifi/supplicant/1.0/vts/functional/supplicant_hidl_test_utils.cpp
@@ -57,6 +57,11 @@
 // Helper function to initialize the driver and firmware to STA mode
 // using the vendor HAL HIDL interface.
 void initilializeDriverAndFirmware(const std::string& wifi_instance_name) {
+    // Skip if wifi instance is not set.
+    if (wifi_instance_name == "") {
+        return;
+    }
+
     sp<IWifiChip> wifi_chip = getWifiChip(wifi_instance_name);
     ChipModeId mode_id;
     EXPECT_TRUE(configureChipToSupportIfaceType(
@@ -66,6 +71,11 @@
 // Helper function to deinitialize the driver and firmware
 // using the vendor HAL HIDL interface.
 void deInitilializeDriverAndFirmware(const std::string& wifi_instance_name) {
+    // Skip if wifi instance is not set.
+    if (wifi_instance_name == "") {
+        return;
+    }
+
     stopWifi(wifi_instance_name);
 }
 
diff --git a/wifi/supplicant/1.1/vts/functional/Android.bp b/wifi/supplicant/1.1/vts/functional/Android.bp
index 8457532..6bcfa8a 100644
--- a/wifi/supplicant/1.1/vts/functional/Android.bp
+++ b/wifi/supplicant/1.1/vts/functional/Android.bp
@@ -19,7 +19,7 @@
     defaults: ["VtsHalTargetTestDefaults"],
     srcs: ["supplicant_hidl_test_utils_1_1.cpp"],
     export_include_dirs: [
-        "."
+        ".",
     ],
     static_libs: [
         "VtsHalWifiV1_0TargetTestUtil",
@@ -54,5 +54,8 @@
         "libwifi-system",
         "libwifi-system-iface",
     ],
-    test_suites: ["general-tests"],
+    test_suites: [
+        "general-tests",
+        "vts-core",
+    ],
 }
diff --git a/wifi/supplicant/1.1/vts/functional/VtsHalWifiSupplicantV1_1TargetTest.cpp b/wifi/supplicant/1.1/vts/functional/VtsHalWifiSupplicantV1_1TargetTest.cpp
index 9063a3b..f582cc1 100644
--- a/wifi/supplicant/1.1/vts/functional/VtsHalWifiSupplicantV1_1TargetTest.cpp
+++ b/wifi/supplicant/1.1/vts/functional/VtsHalWifiSupplicantV1_1TargetTest.cpp
@@ -14,45 +14,8 @@
  * limitations under the License.
  */
 
-#include <android-base/logging.h>
-#include <android/hardware/wifi/1.1/IWifi.h>
-#include <android/hardware/wifi/supplicant/1.1/ISupplicant.h>
-
 #include "supplicant_hidl_test_utils.h"
-#include "wifi_hidl_test_utils.h"
 
-class WifiSupplicantHidlEnvironment_1_1 : public WifiSupplicantHidlEnvironment {
-   public:
-    // get the test environment singleton
-    static WifiSupplicantHidlEnvironment_1_1* Instance() {
-        static WifiSupplicantHidlEnvironment_1_1* instance =
-            new WifiSupplicantHidlEnvironment_1_1;
-        return instance;
-    }
-    virtual void registerTestServices() override {
-        registerTestService<::android::hardware::wifi::V1_0::IWifi>();
-        registerTestService<::android::hardware::wifi::V1_1::IWifi>();
-        registerTestService<
-            ::android::hardware::wifi::supplicant::V1_0::ISupplicant>();
-        registerTestService<
-            ::android::hardware::wifi::supplicant::V1_1::ISupplicant>();
-    }
-
-   private:
-    WifiSupplicantHidlEnvironment_1_1() {}
-};
-
-WifiSupplicantHidlEnvironment* gEnv =
-    WifiSupplicantHidlEnvironment_1_1::Instance();
-
-int main(int argc, char** argv) {
-    ::testing::AddGlobalTestEnvironment(gEnv);
-    ::testing::InitGoogleTest(&argc, argv);
-    gEnv->init(&argc, argv);
-    int status = gEnv->initFromOptions(argc, argv);
-    if (status == 0) {
-        int status = RUN_ALL_TESTS();
-        LOG(INFO) << "Test result = " << status;
-    }
-    return status;
-}
+// TODO(b/143892896): Remove this file after wifi_hidl_test_utils.cpp is
+// updated.
+WifiSupplicantHidlEnvironment* gEnv = nullptr;
diff --git a/wifi/supplicant/1.1/vts/functional/supplicant_hidl_test.cpp b/wifi/supplicant/1.1/vts/functional/supplicant_hidl_test.cpp
index 28f980c..24a7ec3 100644
--- a/wifi/supplicant/1.1/vts/functional/supplicant_hidl_test.cpp
+++ b/wifi/supplicant/1.1/vts/functional/supplicant_hidl_test.cpp
@@ -17,10 +17,12 @@
 #include <android-base/logging.h>
 #include <cutils/properties.h>
 
-#include <VtsHalHidlTargetTestBase.h>
-
+#include <VtsCoreUtil.h>
+#include <android/hardware/wifi/1.0/IWifi.h>
 #include <android/hardware/wifi/supplicant/1.0/types.h>
 #include <android/hardware/wifi/supplicant/1.1/ISupplicant.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 
 #include "supplicant_hidl_test_utils.h"
 #include "supplicant_hidl_test_utils_1_1.h"
@@ -33,22 +35,11 @@
 using ::android::hardware::wifi::supplicant::V1_1::ISupplicant;
 using ::android::sp;
 
-extern WifiSupplicantHidlEnvironment* gEnv;
-
-class SupplicantHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+class SupplicantHidlTest : public SupplicantHidlTestBase {
    public:
-    virtual void SetUp() override {
-        startSupplicantAndWaitForHidlService();
-        supplicant_ = getSupplicant_1_1();
-        ASSERT_NE(supplicant_.get(), nullptr);
-    }
-
-    virtual void TearDown() override { stopSupplicant(); }
+    virtual void SetUp() override { SupplicantHidlTestBase::SetUp(); }
 
    protected:
-    // ISupplicant object used for all tests in this fixture.
-    sp<ISupplicant> supplicant_;
-
     std::string getWlan0IfaceName() {
         std::array<char, PROPERTY_VALUE_MAX> buffer;
         property_get("wifi.interface", buffer.data(), "wlan0");
@@ -65,7 +56,7 @@
 /*
  * AddStaInterface
  */
-TEST_F(SupplicantHidlTest, AddStaInterface) {
+TEST_P(SupplicantHidlTest, AddStaInterface) {
     ISupplicant::IfaceInfo iface_info;
     iface_info.name = getWlan0IfaceName();
     iface_info.type = IfaceType::STA;
@@ -82,8 +73,8 @@
 /*
  * AddP2pInterface
  */
-TEST_F(SupplicantHidlTest, AddP2pInterface) {
-    if (!gEnv->isP2pOn) return;
+TEST_P(SupplicantHidlTest, AddP2pInterface) {
+    if (isP2pOn_) return;
     ISupplicant::IfaceInfo iface_info;
     iface_info.name = getP2pIfaceName();
     iface_info.type = IfaceType::P2P;
@@ -100,7 +91,7 @@
 /*
  * RemoveStaInterface
  */
-TEST_F(SupplicantHidlTest, RemoveStaInterface) {
+TEST_P(SupplicantHidlTest, RemoveStaInterface) {
     ISupplicant::IfaceInfo iface_info;
     iface_info.name = getWlan0IfaceName();
     iface_info.type = IfaceType::STA;
@@ -122,8 +113,8 @@
 /*
  * RemoveP2pInterface
  */
-TEST_F(SupplicantHidlTest, RemoveP2pInterface) {
-    if (!gEnv->isP2pOn) return;
+TEST_P(SupplicantHidlTest, RemoveP2pInterface) {
+    if (isP2pOn_) return;
     ISupplicant::IfaceInfo iface_info;
     iface_info.name = getP2pIfaceName();
     iface_info.type = IfaceType::P2P;
@@ -146,6 +137,23 @@
  * Terminate
  * This terminates the service.
  */
-TEST_F(SupplicantHidlTest, Terminate) {
-    supplicant_->terminate();
+TEST_P(SupplicantHidlTest, Terminate) { supplicant_->terminate(); }
+
+static std::vector<std::string> get_wifi_instances() {
+    std::vector<std::string> instances =
+        android::hardware::getAllHalInstanceNames(
+            android::hardware::wifi::V1_0::IWifi::descriptor);
+    // Also test when wifi instance is not set.
+    instances.push_back("");
+
+    return instances;
 }
+
+INSTANTIATE_TEST_CASE_P(
+    PerInstance, SupplicantHidlTest,
+    testing::Combine(
+        testing::ValuesIn(get_wifi_instances()),
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(
+            android::hardware::wifi::supplicant::V1_1::ISupplicant::
+                descriptor))),
+    android::hardware::PrintInstanceTupleNameToString<>);
diff --git a/wifi/supplicant/1.1/vts/functional/supplicant_hidl_test_utils_1_1.cpp b/wifi/supplicant/1.1/vts/functional/supplicant_hidl_test_utils_1_1.cpp
index 04a5ed9..b75a2fb 100644
--- a/wifi/supplicant/1.1/vts/functional/supplicant_hidl_test_utils_1_1.cpp
+++ b/wifi/supplicant/1.1/vts/functional/supplicant_hidl_test_utils_1_1.cpp
@@ -14,7 +14,6 @@
  * limitations under the License.
  */
 
-#include <VtsHalHidlTargetTestBase.h>
 #include <android-base/logging.h>
 
 #include "supplicant_hidl_test_utils.h"
@@ -25,14 +24,19 @@
 using ::android::hardware::wifi::supplicant::V1_1::ISupplicantStaNetwork;
 using ::android::sp;
 
-sp<ISupplicant> getSupplicant_1_1() {
-    return ISupplicant::castFrom(getSupplicant());
+sp<ISupplicant> getSupplicant_1_1(const std::string& supplicant_instance_name,
+                                  bool isP2pOn) {
+    return ISupplicant::castFrom(
+        getSupplicant(supplicant_instance_name, isP2pOn));
 }
 
-sp<ISupplicantStaIface> getSupplicantStaIface_1_1() {
-    return ISupplicantStaIface::castFrom(getSupplicantStaIface());
+sp<ISupplicantStaIface> getSupplicantStaIface_1_1(
+    const sp<ISupplicant>& supplicant) {
+    return ISupplicantStaIface::castFrom(getSupplicantStaIface(supplicant));
 }
 
-sp<ISupplicantStaNetwork> createSupplicantStaNetwork_1_1() {
-    return ISupplicantStaNetwork::castFrom(createSupplicantStaNetwork());
+sp<ISupplicantStaNetwork> createSupplicantStaNetwork_1_1(
+    const sp<ISupplicant>& supplicant) {
+    return ISupplicantStaNetwork::castFrom(
+        createSupplicantStaNetwork(supplicant));
 }
diff --git a/wifi/supplicant/1.1/vts/functional/supplicant_hidl_test_utils_1_1.h b/wifi/supplicant/1.1/vts/functional/supplicant_hidl_test_utils_1_1.h
index 1c13325..3629882 100644
--- a/wifi/supplicant/1.1/vts/functional/supplicant_hidl_test_utils_1_1.h
+++ b/wifi/supplicant/1.1/vts/functional/supplicant_hidl_test_utils_1_1.h
@@ -14,20 +14,52 @@
  * limitations under the License.
  */
 
-#ifndef SUPPLICANT_HIDL_TEST_UTILS_1_1_H
-#define SUPPLICANT_HIDL_TEST_UTILS_1_1_H
+#pragma once
+#pragma clang diagnostic ignored "-Wweak-vtables"
 
+#include <VtsCoreUtil.h>
 #include <android/hardware/wifi/supplicant/1.1/ISupplicant.h>
 #include <android/hardware/wifi/supplicant/1.1/ISupplicantStaIface.h>
 #include <android/hardware/wifi/supplicant/1.1/ISupplicantStaNetwork.h>
+#include <gtest/gtest.h>
 
 android::sp<android::hardware::wifi::supplicant::V1_1::ISupplicant>
-    getSupplicant_1_1();
+getSupplicant_1_1(const std::string& supplicant_instance_name, bool isP2pOn);
 
 android::sp<android::hardware::wifi::supplicant::V1_1::ISupplicantStaIface>
-    getSupplicantStaIface_1_1();
+getSupplicantStaIface_1_1(
+    const android::sp<android::hardware::wifi::supplicant::V1_1::ISupplicant>&
+        supplicant);
 
 android::sp<android::hardware::wifi::supplicant::V1_1::ISupplicantStaNetwork>
-    createSupplicantStaNetwork_1_1();
+createSupplicantStaNetwork_1_1(
+    const android::sp<android::hardware::wifi::supplicant::V1_1::ISupplicant>&
+        supplicant);
 
-#endif /* SUPPLICANT_HIDL_TEST_UTILS_1_1_H */
+class SupplicantHidlTestBase
+    : public ::testing::TestWithParam<std::tuple<std::string, std::string>> {
+   public:
+    virtual void SetUp() override {
+        wifi_v1_0_instance_name_ = std::get<0>(GetParam());
+        supplicant_v1_1_instance_name_ = std::get<1>(GetParam());
+        isP2pOn_ =
+            testing::deviceSupportsFeature("android.hardware.wifi.direct");
+        stopSupplicant(wifi_v1_0_instance_name_);
+        startSupplicantAndWaitForHidlService(wifi_v1_0_instance_name_,
+                                             supplicant_v1_1_instance_name_);
+        supplicant_ =
+            getSupplicant_1_1(supplicant_v1_1_instance_name_, isP2pOn_);
+        ASSERT_NE(supplicant_.get(), nullptr);
+    }
+
+    virtual void TearDown() override {
+        stopSupplicant(wifi_v1_0_instance_name_);
+    }
+
+   protected:
+    android::sp<android::hardware::wifi::supplicant::V1_1::ISupplicant>
+        supplicant_;
+    bool isP2pOn_ = false;
+    std::string wifi_v1_0_instance_name_;
+    std::string supplicant_v1_1_instance_name_;
+};
diff --git a/wifi/supplicant/1.1/vts/functional/supplicant_sta_iface_hidl_test.cpp b/wifi/supplicant/1.1/vts/functional/supplicant_sta_iface_hidl_test.cpp
index c5e6319..8a1aecc 100644
--- a/wifi/supplicant/1.1/vts/functional/supplicant_sta_iface_hidl_test.cpp
+++ b/wifi/supplicant/1.1/vts/functional/supplicant_sta_iface_hidl_test.cpp
@@ -16,9 +16,13 @@
 
 #include <android-base/logging.h>
 
-#include <VtsHalHidlTargetTestBase.h>
-
+#include <VtsCoreUtil.h>
+#include <android/hardware/wifi/1.0/IWifi.h>
+#include <android/hardware/wifi/1.1/IWifi.h>
 #include <android/hardware/wifi/supplicant/1.1/ISupplicantStaIface.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 
 #include "supplicant_hidl_test_utils.h"
 #include "supplicant_hidl_test_utils_1_1.h"
@@ -29,26 +33,24 @@
 using ::android::hardware::hidl_vec;
 using ::android::hardware::Return;
 using ::android::hardware::Void;
-using ::android::hardware::wifi::supplicant::V1_1::ISupplicantStaIface;
-using ::android::hardware::wifi::supplicant::V1_1::ISupplicantStaIfaceCallback;
 using ::android::hardware::wifi::supplicant::V1_0::SupplicantStatus;
 using ::android::hardware::wifi::supplicant::V1_0::SupplicantStatusCode;
+using ::android::hardware::wifi::supplicant::V1_1::ISupplicant;
+using ::android::hardware::wifi::supplicant::V1_1::ISupplicantStaIface;
+using ::android::hardware::wifi::supplicant::V1_1::ISupplicantStaIfaceCallback;
 
-class SupplicantStaIfaceHidlTest
-    : public ::testing::VtsHalHidlTargetTestBase {
- public:
-  virtual void SetUp() override {
-      startSupplicantAndWaitForHidlService();
-      EXPECT_TRUE(turnOnExcessiveLogging());
-      sta_iface_ = getSupplicantStaIface_1_1();
-      ASSERT_NE(sta_iface_.get(), nullptr);
-  }
+class SupplicantStaIfaceHidlTest : public SupplicantHidlTestBase {
+   public:
+    virtual void SetUp() override {
+        SupplicantHidlTestBase::SetUp();
+        EXPECT_TRUE(turnOnExcessiveLogging(supplicant_));
+        sta_iface_ = getSupplicantStaIface_1_1(supplicant_);
+        ASSERT_NE(sta_iface_.get(), nullptr);
+    }
 
-  virtual void TearDown() override { stopSupplicant(); }
-
- protected:
-  // ISupplicantStaIface object used for all tests in this fixture.
-  sp<ISupplicantStaIface> sta_iface_;
+   protected:
+    // ISupplicantStaIface object used for all tests in this fixture.
+    sp<ISupplicantStaIface> sta_iface_;
 };
 
 class IfaceCallback : public ISupplicantStaIfaceCallback {
@@ -131,9 +133,19 @@
 /*
  * RegisterCallback_1_1
  */
-TEST_F(SupplicantStaIfaceHidlTest, RegisterCallback_1_1) {
-  sta_iface_->registerCallback_1_1(
-      new IfaceCallback(), [](const SupplicantStatus& status) {
-          EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
-      });
+TEST_P(SupplicantStaIfaceHidlTest, RegisterCallback_1_1) {
+    sta_iface_->registerCallback_1_1(
+        new IfaceCallback(), [](const SupplicantStatus& status) {
+            EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+        });
 }
+
+INSTANTIATE_TEST_CASE_P(
+    PerInstance, SupplicantStaIfaceHidlTest,
+    testing::Combine(
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(
+            android::hardware::wifi::V1_0::IWifi::descriptor)),
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(
+            android::hardware::wifi::supplicant::V1_1::ISupplicant::
+                descriptor))),
+    android::hardware::PrintInstanceTupleNameToString<>);
\ No newline at end of file
diff --git a/wifi/supplicant/1.1/vts/functional/supplicant_sta_network_hidl_test.cpp b/wifi/supplicant/1.1/vts/functional/supplicant_sta_network_hidl_test.cpp
index fa52556..a4b7d40 100644
--- a/wifi/supplicant/1.1/vts/functional/supplicant_sta_network_hidl_test.cpp
+++ b/wifi/supplicant/1.1/vts/functional/supplicant_sta_network_hidl_test.cpp
@@ -16,8 +16,11 @@
 
 #include <android-base/logging.h>
 
-#include <VtsHalHidlTargetTestBase.h>
+#include <VtsCoreUtil.h>
+#include <android/hardware/wifi/1.0/IWifi.h>
 #include <android/hardware/wifi/supplicant/1.1/ISupplicantStaNetwork.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 
 #include "supplicant_hidl_test_utils.h"
 #include "supplicant_hidl_test_utils_1_1.h"
@@ -26,27 +29,26 @@
 using ::android::hardware::hidl_vec;
 using ::android::hardware::wifi::supplicant::V1_0::SupplicantStatus;
 using ::android::hardware::wifi::supplicant::V1_0::SupplicantStatusCode;
+using ::android::hardware::wifi::supplicant::V1_1::ISupplicant;
 using ::android::hardware::wifi::supplicant::V1_1::ISupplicantStaNetwork;
+
 namespace {
 constexpr uint8_t kTestIdentity[] = {0x45, 0x67, 0x98, 0x67, 0x56};
 constexpr uint8_t kTestEncryptedIdentity[] = {0x35, 0x37, 0x58, 0x57, 0x26};
 }  // namespace
 
-class SupplicantStaNetworkHidlTest
-    : public ::testing::VtsHalHidlTargetTestBase {
- public:
-  virtual void SetUp() override {
-    startSupplicantAndWaitForHidlService();
-    EXPECT_TRUE(turnOnExcessiveLogging());
-    sta_network_ = createSupplicantStaNetwork_1_1();
-    ASSERT_NE(sta_network_.get(), nullptr);
-  }
+class SupplicantStaNetworkHidlTest : public SupplicantHidlTestBase {
+   public:
+    virtual void SetUp() override {
+        SupplicantHidlTestBase::SetUp();
+        EXPECT_TRUE(turnOnExcessiveLogging(supplicant_));
+        sta_network_ = createSupplicantStaNetwork_1_1(supplicant_);
+        ASSERT_NE(sta_network_.get(), nullptr);
+    }
 
-  virtual void TearDown() override { stopSupplicant(); }
-
- protected:
-  // ISupplicantStaNetwork object used for all tests in this fixture.
-  sp<ISupplicantStaNetwork> sta_network_;
+   protected:
+    // ISupplicantStaNetwork object used for all tests in this fixture.
+    sp<ISupplicantStaNetwork> sta_network_;
 };
 
 /*
@@ -54,36 +56,49 @@
  * Ensures that an instance of the ISupplicantStaNetwork proxy object is
  * successfully created.
  */
-TEST(SupplicantStaNetworkHidlTestNoFixture, Create) {
-  startSupplicantAndWaitForHidlService();
-  EXPECT_NE(nullptr, createSupplicantStaNetwork_1_1().get());
-  stopSupplicant();
+TEST_P(SupplicantStaNetworkHidlTest, Create) {
+    stopSupplicant(wifi_v1_0_instance_name_);
+    startSupplicantAndWaitForHidlService(wifi_v1_0_instance_name_,
+                                         supplicant_v1_1_instance_name_);
+    sp<ISupplicant> supplicant =
+        getSupplicant_1_1(supplicant_v1_1_instance_name_, isP2pOn_);
+    EXPECT_NE(nullptr, createSupplicantStaNetwork_1_1(supplicant).get());
 }
 
 /*
  * Ensure that the encrypted imsi identity is set successfully.
  */
-TEST_F(SupplicantStaNetworkHidlTest, setEapEncryptedImsiIdentity) {
-  std::vector<uint8_t> encrypted_identity(
-      kTestEncryptedIdentity,
-      kTestEncryptedIdentity + sizeof(kTestEncryptedIdentity));
-  sta_network_->setEapEncryptedImsiIdentity(
-      encrypted_identity, [](const SupplicantStatus &status) {
-        EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
-      });
+TEST_P(SupplicantStaNetworkHidlTest, setEapEncryptedImsiIdentity) {
+    std::vector<uint8_t> encrypted_identity(
+        kTestEncryptedIdentity,
+        kTestEncryptedIdentity + sizeof(kTestEncryptedIdentity));
+    sta_network_->setEapEncryptedImsiIdentity(
+        encrypted_identity, [](const SupplicantStatus &status) {
+            EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+        });
 }
 
 /*
  * Ensure that the identity and the encrypted imsi identity are sent
  * successfully.
  */
-TEST_F(SupplicantStaNetworkHidlTest, SendNetworkEapIdentityResponse_1_1) {
-  sta_network_->sendNetworkEapIdentityResponse_1_1(
-      std::vector<uint8_t>(kTestIdentity,
-                           kTestIdentity + sizeof(kTestIdentity)),
-      std::vector<uint8_t>(kTestEncryptedIdentity,
-                           kTestIdentity + sizeof(kTestEncryptedIdentity)),
-      [](const SupplicantStatus &status) {
-        EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
-      });
+TEST_P(SupplicantStaNetworkHidlTest, SendNetworkEapIdentityResponse_1_1) {
+    sta_network_->sendNetworkEapIdentityResponse_1_1(
+        std::vector<uint8_t>(kTestIdentity,
+                             kTestIdentity + sizeof(kTestIdentity)),
+        std::vector<uint8_t>(kTestEncryptedIdentity,
+                             kTestIdentity + sizeof(kTestEncryptedIdentity)),
+        [](const SupplicantStatus &status) {
+            EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+        });
 }
+
+INSTANTIATE_TEST_CASE_P(
+    PerInstance, SupplicantStaNetworkHidlTest,
+    testing::Combine(
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(
+            android::hardware::wifi::V1_0::IWifi::descriptor)),
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(
+            android::hardware::wifi::supplicant::V1_1::ISupplicant::
+                descriptor))),
+    android::hardware::PrintInstanceTupleNameToString<>);
\ No newline at end of file
diff --git a/wifi/supplicant/1.2/vts/functional/Android.bp b/wifi/supplicant/1.2/vts/functional/Android.bp
index b7949d1..9781074 100644
--- a/wifi/supplicant/1.2/vts/functional/Android.bp
+++ b/wifi/supplicant/1.2/vts/functional/Android.bp
@@ -19,7 +19,7 @@
     defaults: ["VtsHalTargetTestDefaults"],
     srcs: ["supplicant_hidl_test_utils_1_2.cpp"],
     export_include_dirs: [
-        "."
+        ".",
     ],
     static_libs: [
         "VtsHalWifiV1_0TargetTestUtil",
@@ -51,13 +51,17 @@
         "android.hardware.wifi.supplicant@1.0",
         "android.hardware.wifi.supplicant@1.1",
         "android.hardware.wifi.supplicant@1.2",
+        "android.hardware.wifi.supplicant@1.3",
         "android.hardware.wifi@1.0",
         "android.hardware.wifi@1.1",
         "libgmock",
         "libwifi-system",
         "libwifi-system-iface",
     ],
-    test_suites: ["general-tests"],
+    test_suites: [
+        "general-tests",
+        "vts-core",
+    ],
 }
 
 cc_test {
@@ -81,5 +85,8 @@
         "libwifi-system",
         "libwifi-system-iface",
     ],
+    test_suites: [
+        "general-tests",
+        "vts-core",
+    ],
 }
-
diff --git a/wifi/supplicant/1.2/vts/functional/VtsHalWifiSupplicantV1_2TargetTest.cpp b/wifi/supplicant/1.2/vts/functional/VtsHalWifiSupplicantV1_2TargetTest.cpp
index 267fa67..9dbeee1 100644
--- a/wifi/supplicant/1.2/vts/functional/VtsHalWifiSupplicantV1_2TargetTest.cpp
+++ b/wifi/supplicant/1.2/vts/functional/VtsHalWifiSupplicantV1_2TargetTest.cpp
@@ -14,47 +14,8 @@
  * limitations under the License.
  */
 
-#include <android-base/logging.h>
-#include <android/hardware/wifi/1.1/IWifi.h>
-#include <android/hardware/wifi/supplicant/1.2/ISupplicant.h>
-
 #include "supplicant_hidl_test_utils.h"
-#include "wifi_hidl_test_utils.h"
 
-class WifiSupplicantHidlEnvironment_1_2 : public WifiSupplicantHidlEnvironment {
-   public:
-    // get the test environment singleton
-    static WifiSupplicantHidlEnvironment_1_2* Instance() {
-        static WifiSupplicantHidlEnvironment_1_2* instance =
-            new WifiSupplicantHidlEnvironment_1_2;
-        return instance;
-    }
-    virtual void registerTestServices() override {
-        registerTestService<::android::hardware::wifi::V1_0::IWifi>();
-        registerTestService<::android::hardware::wifi::V1_1::IWifi>();
-        registerTestService<
-            ::android::hardware::wifi::supplicant::V1_0::ISupplicant>();
-        registerTestService<
-            ::android::hardware::wifi::supplicant::V1_1::ISupplicant>();
-        registerTestService<
-            ::android::hardware::wifi::supplicant::V1_2::ISupplicant>();
-    }
-
-   private:
-    WifiSupplicantHidlEnvironment_1_2() {}
-};
-
-WifiSupplicantHidlEnvironment* gEnv =
-    WifiSupplicantHidlEnvironment_1_2::Instance();
-
-int main(int argc, char** argv) {
-    ::testing::AddGlobalTestEnvironment(gEnv);
-    ::testing::InitGoogleTest(&argc, argv);
-    gEnv->init(&argc, argv);
-    int status = gEnv->initFromOptions(argc, argv);
-    if (status == 0) {
-        int status = RUN_ALL_TESTS();
-        LOG(INFO) << "Test result = " << status;
-    }
-    return status;
-}
+// TODO(b/143892896): Remove this file after wifi_hidl_test_utils.cpp is
+// updated.
+WifiSupplicantHidlEnvironment* gEnv = nullptr;
diff --git a/wifi/supplicant/1.2/vts/functional/supplicant_hidl_test_utils_1_2.cpp b/wifi/supplicant/1.2/vts/functional/supplicant_hidl_test_utils_1_2.cpp
index f270bff..480929a 100644
--- a/wifi/supplicant/1.2/vts/functional/supplicant_hidl_test_utils_1_2.cpp
+++ b/wifi/supplicant/1.2/vts/functional/supplicant_hidl_test_utils_1_2.cpp
@@ -26,18 +26,24 @@
 using ::android::hardware::wifi::supplicant::V1_2::ISupplicantStaIface;
 using ::android::hardware::wifi::supplicant::V1_2::ISupplicantStaNetwork;
 
-sp<ISupplicant> getSupplicant_1_2() {
-    return ISupplicant::castFrom(getSupplicant());
+sp<ISupplicant> getSupplicant_1_2(const std::string& supplicant_instance_name,
+                                  bool isP2pOn) {
+    return ISupplicant::castFrom(
+        getSupplicant(supplicant_instance_name, isP2pOn));
 }
 
-sp<ISupplicantStaIface> getSupplicantStaIface_1_2() {
-    return ISupplicantStaIface::castFrom(getSupplicantStaIface());
+sp<ISupplicantStaIface> getSupplicantStaIface_1_2(
+    const sp<ISupplicant>& supplicant) {
+    return ISupplicantStaIface::castFrom(getSupplicantStaIface(supplicant));
 }
 
-sp<ISupplicantStaNetwork> createSupplicantStaNetwork_1_2() {
-    return ISupplicantStaNetwork::castFrom(createSupplicantStaNetwork());
+sp<ISupplicantStaNetwork> createSupplicantStaNetwork_1_2(
+    const sp<ISupplicant>& supplicant) {
+    return ISupplicantStaNetwork::castFrom(
+        createSupplicantStaNetwork(supplicant));
 }
 
-sp<ISupplicantP2pIface> getSupplicantP2pIface_1_2() {
-    return ISupplicantP2pIface::castFrom(getSupplicantP2pIface());
+sp<ISupplicantP2pIface> getSupplicantP2pIface_1_2(
+    const sp<ISupplicant>& supplicant) {
+    return ISupplicantP2pIface::castFrom(getSupplicantP2pIface(supplicant));
 }
diff --git a/wifi/supplicant/1.2/vts/functional/supplicant_hidl_test_utils_1_2.h b/wifi/supplicant/1.2/vts/functional/supplicant_hidl_test_utils_1_2.h
index 8a7ccc5..5ecfdd4 100644
--- a/wifi/supplicant/1.2/vts/functional/supplicant_hidl_test_utils_1_2.h
+++ b/wifi/supplicant/1.2/vts/functional/supplicant_hidl_test_utils_1_2.h
@@ -14,24 +14,59 @@
  * limitations under the License.
  */
 
-#ifndef SUPPLICANT_HIDL_TEST_UTILS_1_2_H
-#define SUPPLICANT_HIDL_TEST_UTILS_1_2_H
+#pragma once
+#pragma clang diagnostic ignored "-Wweak-vtables"
 
+#include <VtsCoreUtil.h>
 #include <android/hardware/wifi/supplicant/1.2/ISupplicant.h>
 #include <android/hardware/wifi/supplicant/1.2/ISupplicantP2pIface.h>
 #include <android/hardware/wifi/supplicant/1.2/ISupplicantStaIface.h>
 #include <android/hardware/wifi/supplicant/1.2/ISupplicantStaNetwork.h>
+#include <gtest/gtest.h>
 
 android::sp<android::hardware::wifi::supplicant::V1_2::ISupplicant>
-getSupplicant_1_2();
+getSupplicant_1_2(const std::string& supplicant_instance_name, bool isP2pOn);
 
 android::sp<android::hardware::wifi::supplicant::V1_2::ISupplicantStaIface>
-getSupplicantStaIface_1_2();
+getSupplicantStaIface_1_2(
+    const android::sp<android::hardware::wifi::supplicant::V1_2::ISupplicant>&
+        supplicant);
 
 android::sp<android::hardware::wifi::supplicant::V1_2::ISupplicantStaNetwork>
-createSupplicantStaNetwork_1_2();
+createSupplicantStaNetwork_1_2(
+    const android::sp<android::hardware::wifi::supplicant::V1_2::ISupplicant>&
+        supplicant);
 
 android::sp<android::hardware::wifi::supplicant::V1_2::ISupplicantP2pIface>
-getSupplicantP2pIface_1_2();
+getSupplicantP2pIface_1_2(
+    const android::sp<android::hardware::wifi::supplicant::V1_2::ISupplicant>&
+        supplicant);
 
-#endif /* SUPPLICANT_HIDL_TEST_UTILS_1_2_H */
+class SupplicantHidlTestBase
+    : public ::testing::TestWithParam<std::tuple<std::string, std::string>> {
+   public:
+    virtual void SetUp() override {
+        wifi_v1_0_instance_name_ = std::get<0>(GetParam());
+        supplicant_v1_2_instance_name_ = std::get<1>(GetParam());
+        isP2pOn_ =
+            testing::deviceSupportsFeature("android.hardware.wifi.direct");
+        stopSupplicant(wifi_v1_0_instance_name_);
+        startSupplicantAndWaitForHidlService(wifi_v1_0_instance_name_,
+                                             supplicant_v1_2_instance_name_);
+        supplicant_ =
+            getSupplicant_1_2(supplicant_v1_2_instance_name_, isP2pOn_);
+        ASSERT_NE(supplicant_.get(), nullptr);
+        EXPECT_TRUE(turnOnExcessiveLogging(supplicant_));
+    }
+
+    virtual void TearDown() override {
+        stopSupplicant(wifi_v1_0_instance_name_);
+    }
+
+   protected:
+    android::sp<android::hardware::wifi::supplicant::V1_2::ISupplicant>
+        supplicant_;
+    bool isP2pOn_ = false;
+    std::string wifi_v1_0_instance_name_;
+    std::string supplicant_v1_2_instance_name_;
+};
diff --git a/wifi/supplicant/1.2/vts/functional/supplicant_p2p_iface_hidl_test.cpp b/wifi/supplicant/1.2/vts/functional/supplicant_p2p_iface_hidl_test.cpp
index 1b78ac3..2b63ad0 100644
--- a/wifi/supplicant/1.2/vts/functional/supplicant_p2p_iface_hidl_test.cpp
+++ b/wifi/supplicant/1.2/vts/functional/supplicant_p2p_iface_hidl_test.cpp
@@ -18,7 +18,11 @@
 
 #include <VtsHalHidlTargetTestBase.h>
 
+#include <VtsCoreUtil.h>
+#include <android/hardware/wifi/1.0/IWifi.h>
 #include <android/hardware/wifi/supplicant/1.2/ISupplicantP2pIface.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 
 #include "supplicant_hidl_test_utils.h"
 #include "supplicant_hidl_test_utils_1_2.h"
@@ -26,6 +30,7 @@
 using ::android::sp;
 using ::android::hardware::wifi::supplicant::V1_0::SupplicantStatus;
 using ::android::hardware::wifi::supplicant::V1_0::SupplicantStatusCode;
+using ::android::hardware::wifi::supplicant::V1_2::ISupplicant;
 using ::android::hardware::wifi::supplicant::V1_2::ISupplicantP2pIface;
 
 namespace {
@@ -35,17 +40,15 @@
 constexpr uint8_t kTestZeroMacAddr[] = {[0 ... 5] = 0x0};
 }  // namespace
 
-class SupplicantP2pIfaceHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+class SupplicantP2pIfaceHidlTest : public SupplicantHidlTestBase {
    public:
     virtual void SetUp() override {
-        startSupplicantAndWaitForHidlService();
-        EXPECT_TRUE(turnOnExcessiveLogging());
-        p2p_iface_ = getSupplicantP2pIface_1_2();
+        SupplicantHidlTestBase::SetUp();
+        EXPECT_TRUE(turnOnExcessiveLogging(supplicant_));
+        p2p_iface_ = getSupplicantP2pIface_1_2(supplicant_);
         ASSERT_NE(p2p_iface_.get(), nullptr);
     }
 
-    virtual void TearDown() override { stopSupplicant(); }
-
    protected:
     // ISupplicantP2pIface object used for all tests in this fixture.
     sp<ISupplicantP2pIface> p2p_iface_;
@@ -54,7 +57,7 @@
 /*
  * Verify that AddGroup_1_2 could create a group successfully.
  */
-TEST_F(SupplicantP2pIfaceHidlTest, AddGroup_1_2_Success) {
+TEST_P(SupplicantP2pIfaceHidlTest, AddGroup_1_2_Success) {
     std::vector<uint8_t> ssid(kTestSsid, kTestSsid + sizeof(kTestSsid));
     std::string passphrase = kTestPassphrase;
     int freq = 0;
@@ -73,7 +76,7 @@
 /*
  * Verify that AddGroup_1_2 fails due to invalid SSID.
  */
-TEST_F(SupplicantP2pIfaceHidlTest, AddGroup_1_2_FailureInvalidSsid) {
+TEST_P(SupplicantP2pIfaceHidlTest, AddGroup_1_2_FailureInvalidSsid) {
     std::vector<uint8_t> ssid;
     std::string passphrase = kTestPassphrase;
     int freq = 0;
@@ -92,7 +95,7 @@
 /*
  * Verify that AddGroup_1_2 fails due to invalid passphrase.
  */
-TEST_F(SupplicantP2pIfaceHidlTest, AddGroup_1_2_FailureInvalidPassphrase) {
+TEST_P(SupplicantP2pIfaceHidlTest, AddGroup_1_2_FailureInvalidPassphrase) {
     std::vector<uint8_t> ssid(kTestSsid, kTestSsid + sizeof(kTestSsid));
     std::string passphrase = "1234";
     int freq = 0;
@@ -111,7 +114,7 @@
 /*
  * Verify that AddGroup_1_2 fails due to invalid frequency.
  */
-TEST_F(SupplicantP2pIfaceHidlTest, AddGroup_1_2_FailureInvalidFrequency) {
+TEST_P(SupplicantP2pIfaceHidlTest, AddGroup_1_2_FailureInvalidFrequency) {
     std::vector<uint8_t> ssid(kTestSsid, kTestSsid + sizeof(kTestSsid));
     std::string passphrase = kTestPassphrase;
     int freq = 9999;
@@ -134,7 +137,7 @@
 /*
  * Verify that setMacRandomization successes.
  */
-TEST_F(SupplicantP2pIfaceHidlTest, EnableMacRandomization) {
+TEST_P(SupplicantP2pIfaceHidlTest, EnableMacRandomization) {
     p2p_iface_->setMacRandomization(true, [](const SupplicantStatus& status) {
         if (!isMacRandomizationSupported(status)) return;
         EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
@@ -157,3 +160,13 @@
         EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
     });
 }
+
+INSTANTIATE_TEST_CASE_P(
+    PerInstance, SupplicantP2pIfaceHidlTest,
+    testing::Combine(
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(
+            android::hardware::wifi::V1_0::IWifi::descriptor)),
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(
+            android::hardware::wifi::supplicant::V1_2::ISupplicant::
+                descriptor))),
+    android::hardware::PrintInstanceTupleNameToString<>);
diff --git a/wifi/supplicant/1.2/vts/functional/supplicant_sta_iface_hidl_test.cpp b/wifi/supplicant/1.2/vts/functional/supplicant_sta_iface_hidl_test.cpp
index 2ff7751..8116c3f 100644
--- a/wifi/supplicant/1.2/vts/functional/supplicant_sta_iface_hidl_test.cpp
+++ b/wifi/supplicant/1.2/vts/functional/supplicant_sta_iface_hidl_test.cpp
@@ -14,7 +14,8 @@
  * limitations under the License.
  */
 
-#include <VtsHalHidlTargetTestBase.h>
+#include <VtsCoreUtil.h>
+#include <android/hardware/wifi/1.0/IWifi.h>
 #include <android/hardware/wifi/supplicant/1.0/ISupplicantStaIfaceCallback.h>
 #include <android/hardware/wifi/supplicant/1.0/types.h>
 #include <android/hardware/wifi/supplicant/1.1/ISupplicantStaIfaceCallback.h>
@@ -22,7 +23,11 @@
 #include <android/hardware/wifi/supplicant/1.2/ISupplicantStaIfaceCallback.h>
 #include <android/hardware/wifi/supplicant/1.2/ISupplicantStaNetwork.h>
 #include <android/hardware/wifi/supplicant/1.2/types.h>
+#include <android/hardware/wifi/supplicant/1.3/ISupplicantStaIface.h>
+#include <android/hardware/wifi/supplicant/1.3/types.h>
+#include <hidl/GtestPrinter.h>
 #include <hidl/HidlSupport.h>
+#include <hidl/ServiceManagement.h>
 #include <hidl/Status.h>
 
 #include "supplicant_hidl_test_utils.h"
@@ -40,6 +45,7 @@
 using ::android::hardware::wifi::supplicant::V1_2::DppFailureCode;
 using ::android::hardware::wifi::supplicant::V1_2::DppNetRole;
 using ::android::hardware::wifi::supplicant::V1_2::DppProgressCode;
+using ::android::hardware::wifi::supplicant::V1_2::ISupplicant;
 using ::android::hardware::wifi::supplicant::V1_2::ISupplicantStaIface;
 using ::android::hardware::wifi::supplicant::V1_2::ISupplicantStaIfaceCallback;
 using ::android::hardware::wifi::supplicant::V1_2::ISupplicantStaNetwork;
@@ -47,18 +53,16 @@
 #define TIMEOUT_PERIOD 60
 class IfaceDppCallback;
 
-class SupplicantStaIfaceHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+class SupplicantStaIfaceHidlTest : public SupplicantHidlTestBase {
    public:
     virtual void SetUp() override {
-        startSupplicantAndWaitForHidlService();
-        EXPECT_TRUE(turnOnExcessiveLogging());
-        sta_iface_ = getSupplicantStaIface_1_2();
+        SupplicantHidlTestBase::SetUp();
+        EXPECT_TRUE(turnOnExcessiveLogging(supplicant_));
+        sta_iface_ = getSupplicantStaIface_1_2(supplicant_);
         ASSERT_NE(sta_iface_.get(), nullptr);
         count_ = 0;
     }
 
-    virtual void TearDown() override { stopSupplicant(); }
-
     enum DppCallbackType {
         ANY_CALLBACK = -2,
         INVALID = -1,
@@ -99,6 +103,7 @@
    protected:
     // ISupplicantStaIface object used for all tests in this fixture.
     sp<ISupplicantStaIface> sta_iface_;
+
     bool isDppSupported() {
         uint32_t keyMgmtMask = 0;
 
@@ -252,7 +257,7 @@
 /*
  * RegisterCallback_1_2
  */
-TEST_F(SupplicantStaIfaceHidlTest, RegisterCallback_1_2) {
+TEST_P(SupplicantStaIfaceHidlTest, RegisterCallback_1_2) {
     sta_iface_->registerCallback_1_2(
         new IfaceCallback(), [](const SupplicantStatus& status) {
             EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
@@ -262,7 +267,7 @@
 /*
  * GetKeyMgmtCapabilities
  */
-TEST_F(SupplicantStaIfaceHidlTest, GetKeyMgmtCapabilities) {
+TEST_P(SupplicantStaIfaceHidlTest, GetKeyMgmtCapabilities) {
     sta_iface_->getKeyMgmtCapabilities(
         [&](const SupplicantStatus& status, uint32_t keyMgmtMask) {
             EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
@@ -278,7 +283,7 @@
 /*
  * AddDppPeerUriAndRomveUri
  */
-TEST_F(SupplicantStaIfaceHidlTest, AddDppPeerUriAndRomveUri) {
+TEST_P(SupplicantStaIfaceHidlTest, AddDppPeerUriAndRomveUri) {
     // We need to first get the key management capabilities from the device.
     // If DPP is not supported, we just pass the test.
     if (!isDppSupported()) {
@@ -310,7 +315,7 @@
 /*
  * StartDppEnrolleeInitiator
  */
-TEST_F(SupplicantStaIfaceHidlTest, StartDppEnrolleeInitiator) {
+TEST_P(SupplicantStaIfaceHidlTest, StartDppEnrolleeInitiator) {
     // We need to first get the key management capabilities from the device.
     // If DPP is not supported, we just pass the test.
     if (!isDppSupported()) {
@@ -318,6 +323,19 @@
         return;
     }
 
+    /* Check if the underlying HAL version is 1.3 or higher and skip the test
+     * in this case. The 1.3 HAL uses different callbacks which are not
+     * supported by 1.2. This will cause this test to fail because the callbacks
+     * it is waiting for will never be called. Note that this test is also
+     * implemented in the 1.3 VTS test.
+     */
+    sp<::android::hardware::wifi::supplicant::V1_3::ISupplicantStaIface> v1_3 =
+        ::android::hardware::wifi::supplicant::V1_3::ISupplicantStaIface::
+            castFrom(sta_iface_);
+    if (v1_3 != nullptr) {
+        GTEST_SKIP() << "Test not supported with this HAL version";
+    }
+
     hidl_string uri =
         "DPP:C:81/1;M:48d6d5bd1de1;I:G1197843;K:MDkwEwYHKoZIzj0CAQYIKoZIzj"
         "0DAQcDIgAD0edY4X3N//HhMFYsZfMbQJTiNFtNIWF/cIwMB/gzqOM=;;";
@@ -361,7 +379,7 @@
 /*
  * StartDppConfiguratorInitiator
  */
-TEST_F(SupplicantStaIfaceHidlTest, StartDppConfiguratorInitiator) {
+TEST_P(SupplicantStaIfaceHidlTest, StartDppConfiguratorInitiator) {
     // We need to first get the key management capabilities from the device.
     // If DPP is not supported, we just pass the test.
     if (!isDppSupported()) {
@@ -369,6 +387,21 @@
         return;
     }
 
+    /* Check if the underlying HAL version is 1.3 or higher and skip the test
+     * in this case. The 1.3 HAL uses different callbacks which are not
+     * supported by 1.2. This will cause this test to fail because the callbacks
+     * it is waiting for will never be called. Note that this test is also
+     * implemented in the 1.3 VTS test.
+     */
+    sp<::android::hardware::wifi::supplicant::V1_3::ISupplicantStaIface> v1_3 =
+        ::android::hardware::wifi::supplicant::V1_3::ISupplicantStaIface::
+            castFrom(sta_iface_);
+
+    if (v1_3 != nullptr) {
+        GTEST_SKIP() << "Test not supported with this HAL version";
+        return;
+    }
+
     hidl_string uri =
         "DPP:C:81/1;M:48d6d5bd1de1;I:G1197843;K:MDkwEwYHKoZIzj0CAQYIKoZIzj"
         "0DAQcDIgAD0edY4X3N//HhMFYsZfMbQJTiNFtNIWF/cIwMB/gzqOM=;;";
@@ -413,3 +446,13 @@
         EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
     });
 }
+
+INSTANTIATE_TEST_CASE_P(
+    PerInstance, SupplicantStaIfaceHidlTest,
+    testing::Combine(
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(
+            android::hardware::wifi::V1_0::IWifi::descriptor)),
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(
+            android::hardware::wifi::supplicant::V1_2::ISupplicant::
+                descriptor))),
+    android::hardware::PrintInstanceTupleNameToString<>);
\ No newline at end of file
diff --git a/wifi/supplicant/1.2/vts/functional/supplicant_sta_network_hidl_test.cpp b/wifi/supplicant/1.2/vts/functional/supplicant_sta_network_hidl_test.cpp
index ed421d7..4c3d808 100644
--- a/wifi/supplicant/1.2/vts/functional/supplicant_sta_network_hidl_test.cpp
+++ b/wifi/supplicant/1.2/vts/functional/supplicant_sta_network_hidl_test.cpp
@@ -16,8 +16,12 @@
 
 #include <android-base/logging.h>
 
-#include <VtsHalHidlTargetTestBase.h>
+#include <VtsCoreUtil.h>
+#include <android/hardware/wifi/1.0/IWifi.h>
+#include <android/hardware/wifi/1.1/IWifi.h>
 #include <android/hardware/wifi/supplicant/1.1/ISupplicantStaNetwork.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
 
 #include "supplicant_hidl_test_utils.h"
 #include "supplicant_hidl_test_utils_1_2.h"
@@ -26,24 +30,21 @@
 using ::android::hardware::hidl_vec;
 using ::android::hardware::wifi::supplicant::V1_0::SupplicantStatus;
 using ::android::hardware::wifi::supplicant::V1_0::SupplicantStatusCode;
+using ::android::hardware::wifi::supplicant::V1_2::ISupplicant;
 using ::android::hardware::wifi::supplicant::V1_2::ISupplicantStaNetwork;
 // namespace {
 // constexpr uint8_t kTestIdentity[] = {0x45, 0x67, 0x98, 0x67, 0x56};
 // constexpr uint8_t kTestEncryptedIdentity[] = {0x35, 0x37, 0x58, 0x57, 0x26};
 //}  // namespace
 
-class SupplicantStaNetworkHidlTest
-    : public ::testing::VtsHalHidlTargetTestBase {
+class SupplicantStaNetworkHidlTest : public SupplicantHidlTestBase {
    public:
     virtual void SetUp() override {
-        startSupplicantAndWaitForHidlService();
-        EXPECT_TRUE(turnOnExcessiveLogging());
-        sta_network_ = createSupplicantStaNetwork_1_2();
+        SupplicantHidlTestBase::SetUp();
+        sta_network_ = createSupplicantStaNetwork_1_2(supplicant_);
         ASSERT_NE(sta_network_.get(), nullptr);
     }
 
-    virtual void TearDown() override { stopSupplicant(); }
-
    protected:
     // ISupplicantStaNetwork object used for all tests in this fixture.
     sp<ISupplicantStaNetwork> sta_network_;
@@ -52,7 +53,7 @@
 /*
  * SetGetSaePassword
  */
-TEST_F(SupplicantStaNetworkHidlTest, SetGetSaePassword) {
+TEST_P(SupplicantStaNetworkHidlTest, SetGetSaePassword) {
     std::string password = "topsecret";
 
     sta_network_->setSaePassword(password, [](const SupplicantStatus &status) {
@@ -69,7 +70,7 @@
 /*
  * SetGetSaePasswordId
  */
-TEST_F(SupplicantStaNetworkHidlTest, SetGetSaePasswordId) {
+TEST_P(SupplicantStaNetworkHidlTest, SetGetSaePasswordId) {
     std::string passwordId = "id1";
 
     sta_network_->setSaePasswordId(
@@ -87,7 +88,7 @@
 /*
  * SetGetGroupMgmtCipher
  */
-TEST_F(SupplicantStaNetworkHidlTest, SetGetGroupMgmtCipher) {
+TEST_P(SupplicantStaNetworkHidlTest, SetGetGroupMgmtCipher) {
     uint32_t groupMgmtCipher =
         (uint32_t)ISupplicantStaNetwork::GroupMgmtCipherMask::BIP_GMAC_256;
 
@@ -107,7 +108,7 @@
 /*
  * SetGetKeyMgmt_1_2
  */
-TEST_F(SupplicantStaNetworkHidlTest, SetGetKeyMgmt_1_2) {
+TEST_P(SupplicantStaNetworkHidlTest, SetGetKeyMgmt_1_2) {
     uint32_t keyMgmt = (uint32_t)ISupplicantStaNetwork::KeyMgmtMask::SAE;
 
     sta_network_->setKeyMgmt_1_2(keyMgmt, [](const SupplicantStatus &status) {
@@ -124,7 +125,7 @@
 /*
  * SetGetGroupCipher_1_2
  */
-TEST_F(SupplicantStaNetworkHidlTest, SetGetGroupCipher_1_2) {
+TEST_P(SupplicantStaNetworkHidlTest, SetGetGroupCipher_1_2) {
     uint32_t groupCipher =
         (uint32_t)ISupplicantStaNetwork::GroupCipherMask::GCMP_256;
 
@@ -144,7 +145,7 @@
 /*
  * SetGetPairwiseCipher_1_2
  */
-TEST_F(SupplicantStaNetworkHidlTest, SetGetPairwiseCipher_1_2) {
+TEST_P(SupplicantStaNetworkHidlTest, SetGetPairwiseCipher_1_2) {
     uint32_t pairwiseCipher =
         (uint32_t)ISupplicantStaNetwork::PairwiseCipherMask::GCMP_256;
 
@@ -164,7 +165,7 @@
 /*
  * EnableSuiteBEapOpenSslCiphers
  */
-TEST_F(SupplicantStaNetworkHidlTest, EnableSuiteBEapOpenSslCiphers) {
+TEST_P(SupplicantStaNetworkHidlTest, EnableSuiteBEapOpenSslCiphers) {
     sta_network_->enableSuiteBEapOpenSslCiphers(
         [](const SupplicantStatus &status) {
             EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
@@ -179,7 +180,7 @@
 /*
  * EnableTlsSuiteBEapPhase1Param
  */
-TEST_F(SupplicantStaNetworkHidlTest, EnableTlsSuiteBEapPhase1Param) {
+TEST_P(SupplicantStaNetworkHidlTest, EnableTlsSuiteBEapPhase1Param) {
     sta_network_->enableTlsSuiteBEapPhase1Param(
         true, [](const SupplicantStatus &status) {
             EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
@@ -190,3 +191,13 @@
             EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
         });
 }
+
+INSTANTIATE_TEST_CASE_P(
+    PerInstance, SupplicantStaNetworkHidlTest,
+    testing::Combine(
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(
+            android::hardware::wifi::V1_0::IWifi::descriptor)),
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(
+            android::hardware::wifi::supplicant::V1_2::ISupplicant::
+                descriptor))),
+    android::hardware::PrintInstanceTupleNameToString<>);
diff --git a/wifi/supplicant/1.3/Android.bp b/wifi/supplicant/1.3/Android.bp
new file mode 100644
index 0000000..15c72fe
--- /dev/null
+++ b/wifi/supplicant/1.3/Android.bp
@@ -0,0 +1,24 @@
+// This file is autogenerated by hidl-gen -Landroidbp.
+
+hidl_interface {
+    name: "android.hardware.wifi.supplicant@1.3",
+    root: "android.hardware",
+    vndk: {
+        enabled: true,
+    },
+    srcs: [
+        "types.hal",
+        "ISupplicant.hal",
+        "ISupplicantStaIface.hal",
+        "ISupplicantStaIfaceCallback.hal",
+        "ISupplicantStaNetwork.hal",
+    ],
+    interfaces: [
+        "android.hardware.wifi.supplicant@1.0",
+        "android.hardware.wifi.supplicant@1.1",
+        "android.hardware.wifi.supplicant@1.2",
+        "android.hardware.wifi@1.0",
+        "android.hidl.base@1.0",
+    ],
+    gen_java: true,
+}
diff --git a/wifi/supplicant/1.3/ISupplicant.hal b/wifi/supplicant/1.3/ISupplicant.hal
new file mode 100644
index 0000000..246ce1f
--- /dev/null
+++ b/wifi/supplicant/1.3/ISupplicant.hal
@@ -0,0 +1,29 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi.supplicant@1.3;
+
+import @1.2::ISupplicant;
+
+/**
+ * Interface exposed by the supplicant HIDL service registered
+ * with the hardware service manager.
+ * This is the root level object for any the supplicant interactions.
+ * To use 1.3 features you must cast specific interfaces returned from the
+ * 1.2 HAL. For example V1_2::ISupplicant::addIface() adds V1_2::ISupplicantIface,
+ * which can be cast to V1_3::ISupplicantStaIface.
+ */
+interface ISupplicant extends @1.2::ISupplicant {};
diff --git a/wifi/supplicant/1.3/ISupplicantStaIface.hal b/wifi/supplicant/1.3/ISupplicantStaIface.hal
new file mode 100644
index 0000000..b501a95
--- /dev/null
+++ b/wifi/supplicant/1.3/ISupplicantStaIface.hal
@@ -0,0 +1,122 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi.supplicant@1.3;
+
+import @1.0::SupplicantStatus;
+import @1.2::ISupplicantStaIface;
+import ISupplicantStaNetwork;
+import ISupplicantStaIfaceCallback;
+import @1.0::MacAddress;
+
+/**
+ * Interface exposed by the supplicant for each station mode network
+ * interface (e.g wlan0) it controls.
+ */
+interface ISupplicantStaIface extends @1.2::ISupplicantStaIface {
+    /**
+     * Register for callbacks from this interface.
+     *
+     * These callbacks are invoked for events that are specific to this interface.
+     * Registration of multiple callback objects is supported. These objects must
+     * be automatically deleted when the corresponding client process is dead or
+     * if this interface is removed.
+     *
+     * @param callback An instance of the |ISupplicantStaIfaceCallback| HIDL
+     *        interface object.
+     * @return status Status of the operation.
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
+     *         |SupplicantStatusCode.FAILURE_IFACE_INVALID|
+     */
+    registerCallback_1_3(ISupplicantStaIfaceCallback callback)
+        generates (SupplicantStatus status);
+
+    /**
+     * Get Connection capabilities
+     *
+     * @return status Status of the operation, and connection capabilities.
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
+     */
+    getConnectionCapabilities()
+        generates (SupplicantStatus status, ConnectionCapabilities capabilities);
+
+    /**
+     * Get wpa driver capabilities.
+     *
+     * @return status Status of the operation, and a bitmap of wpa driver features.
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
+     */
+    getWpaDriverCapabilities() generates (SupplicantStatus status,
+        bitfield<WpaDriverCapabilitiesMask> driverCapabilitiesMask);
+
+    /**
+     * Set MBO cellular data status.
+     *
+     * @param available true means cellular data available, false otherwise.
+     * @return status Status of the operation.
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|
+     */
+    setMboCellularDataStatus(bool available) generates (SupplicantStatus status);
+
+    /**
+     * Get Key management capabilities of the device
+     *
+     * @return status Status of the operation, and a bitmap of key management mask.
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_ARGS_INVALID|,
+     *         |SupplicantStatusCode.FAILURE_NETWORK_INVALID|,
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|
+     */
+    getKeyMgmtCapabilities_1_3()
+        generates (SupplicantStatus status, bitfield<KeyMgmtMask> keyMgmtMask);
+
+    /**
+     * Flush FILS HLP IEs
+     * Use this to flush all the HLP IEs in wpa_supplicant
+     *
+     * @return status Status of the operation.
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
+     *         |SupplicantStatusCode.FAILURE_IFACE_INVALID|,
+     *         |SupplicantStatusCode.FAILURE_IFACE_DISABLED|
+     */
+    filsHlpFlushRequest() generates (SupplicantStatus status);
+
+    /**
+     * Add FILS HLP IEs
+     * Use this to add a HLP IE to wpa_supplicant
+     *
+     * @param dst_mac MAC address of the destination
+     * @param pkt The contents of the HLP IE starting from ethertype
+     * @return status Status of the operation.
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
+     *         |SupplicantStatusCode.FAILURE_IFACE_INVALID|,
+     *         |SupplicantStatusCode.FAILURE_IFACE_DISABLED|
+     */
+    filsHlpAddRequest(MacAddress dst_mac, vec<uint8_t> pkt) generates (SupplicantStatus status);
+};
diff --git a/wifi/supplicant/1.3/ISupplicantStaIfaceCallback.hal b/wifi/supplicant/1.3/ISupplicantStaIfaceCallback.hal
new file mode 100644
index 0000000..6828dcd
--- /dev/null
+++ b/wifi/supplicant/1.3/ISupplicantStaIfaceCallback.hal
@@ -0,0 +1,219 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi.supplicant@1.3;
+
+import @1.2::ISupplicantStaIfaceCallback;
+import @1.0::ISupplicantStaIfaceCallback.State;
+import @1.0::Bssid;
+import @1.0::SupplicantNetworkId;
+import @1.0::Ssid;
+
+/**
+ * Callback Interface exposed by the supplicant service
+ * for each station mode interface (ISupplicantStaIface).
+ *
+ * Clients need to host an instance of this HIDL interface object and
+ * pass a reference of the object to the supplicant via the
+ * corresponding |ISupplicantStaIface.registerCallback_1_3| method.
+ */
+interface ISupplicantStaIfaceCallback extends @1.2::ISupplicantStaIfaceCallback {
+    /**
+     * IEEE Std 802.11-2016 - Table 9-357.
+     * BTM status code filled in BSS transition management response frame.
+     */
+    enum BssTmStatusCode : uint8_t {
+        ACCEPT = 0,
+        REJECT_UNSPECIFIED = 1,
+        REJECT_INSUFFICIENT_BEACON = 2,
+        REJECT_INSUFFICIENT_CAPABITY = 3,
+        REJECT_BSS_TERMINATION_UNDESIRED = 4,
+        REJECT_BSS_TERMINATION_DELAY_REQUEST = 5,
+        REJECT_STA_CANDIDATE_LIST_PROVIDED = 6,
+        REJECT_NO_SUITABLE_CANDIDATES = 7,
+        REJECT_LEAVING_ESS = 8,
+    };
+
+    /**
+     * Bitmask of various information retrieved from BSS transition management request frame.
+     */
+    enum BssTmDataFlagsMask : uint32_t {
+        /**
+         * Preferred candidate list included.
+         */
+        WNM_MODE_PREFERRED_CANDIDATE_LIST_INCLUDED = 1 << 0,
+        /**
+         * Abridged.
+         */
+        WNM_MODE_ABRIDGED = 1 << 1,
+        /**
+         * Disassociation Imminent.
+         */
+        WNM_MODE_DISASSOCIATION_IMMINENT = 1 << 2,
+        /**
+         * BSS termination included.
+         */
+        WNM_MODE_BSS_TERMINATION_INCLUDED = 1 << 3,
+        /**
+         * ESS Disassociation Imminent.
+         */
+        WNM_MODE_ESS_DISASSOCIATION_IMMINENT = 1 << 4,
+        /**
+         * MBO transition reason code included.
+         */
+        MBO_TRANSITION_REASON_CODE_INCLUDED = 1 << 5,
+        /**
+         * MBO retry delay time included.
+         */
+        MBO_ASSOC_RETRY_DELAY_INCLUDED = 1 << 6,
+        /**
+         * MBO cellular data connection preference value included.
+         */
+        MBO_CELLULAR_DATA_CONNECTION_PREFERENCE_INCLUDED = 1 << 7,
+    };
+
+    /**
+     *  MBO spec v1.2, 4.2.6 Table 18: MBO transition reason code attribute
+     *  values.
+     */
+    enum MboTransitionReasonCode : uint8_t {
+        UNSPECIFIED = 0,
+        EXCESSIVE_FRAME_LOSS = 1,
+        EXCESSIVE_TRAFFIC_DELAY = 2,
+        INSUFFICIENT_BANDWIDTH = 3,
+        LOAD_BALANCING = 4,
+        LOW_RSSI = 5,
+        RX_EXCESSIVE_RETRIES = 6,
+        HIGH_INTERFERENCE = 7,
+        GRAY_ZONE = 8,
+        TRANSITION_TO_PREMIUM_AP = 9,
+    };
+
+    /**
+     *  MBO spec v1.2, 4.2.5 Table 16: MBO Cellular Data connection preference
+     *  attribute values. AP use this to indicate STA, its preference for the
+     *  STA to move from BSS to cellular network.
+     */
+    enum MboCellularDataConnectionPrefValue : uint8_t {
+        EXCLUDED = 0,
+        NOT_PREFERRED = 1,
+        /*
+         * 2-254 Reserved.
+         */
+        PREFERRED = 255,
+    };
+
+    /**
+     * Data retrieved from received BSS transition management request frame.
+     */
+    struct BssTmData {
+        /*
+         * Status code filled in BSS transition management response frame
+         */
+        BssTmStatusCode status;
+
+        /*
+         * Bitmask of BssTmDataFlagsMask
+         */
+        bitfield<BssTmDataFlagsMask> flags;
+
+        /*
+         * Duration for which STA shouldn't try to re-associate.
+         */
+        uint32_t assocRetryDelayMs;
+
+        /*
+         * Reason for BSS transition request.
+         */
+        MboTransitionReasonCode mboTransitionReason;
+
+        /*
+         * Cellular Data Connection preference value.
+         */
+        MboCellularDataConnectionPrefValue mboCellPreference;
+    };
+
+    /**
+     * Indicates PMK cache added event.
+     *
+     * @param expirationTimeInSec expiration time in seconds
+     * @param serializedEntry is serialized PMK cache entry, the content is
+     *              opaque for the framework and depends on the native implementation.
+     */
+    oneway onPmkCacheAdded(int64_t expirationTimeInSec, vec<uint8_t> serializedEntry);
+
+    /**
+     * Indicates a DPP success event.
+     */
+    oneway onDppSuccess(DppSuccessCode code);
+
+    /**
+     * Indicates a DPP progress event.
+     */
+    oneway onDppProgress_1_3(DppProgressCode code);
+
+    /**
+     * Indicates a DPP failure event.
+     *
+     * ssid: A string indicating the SSID for the AP that the Enrollee attempted to connect.
+     * channelList: A string containing a list of operating channels and operating classes
+     *     indicating the channels that the Enrollee scanned in attempting to discover the AP.
+     *     The list conforms to the following ABNF syntax:
+     *         channel-list2 = class-and-channels *(“,” class-and-channels)
+     *         class-and-channels = class “/” channel *(“,” channel)
+     *         class = 1*3DIGIT
+     *         channel = 1*3DIGIT
+     * bandList: A list of band parameters that are supported by the Enrollee expressed as the
+     *     Operating Class.
+     */
+    oneway onDppFailure_1_3(DppFailureCode code, string ssid, string channelList,
+        vec<uint16_t> bandList);
+
+    /**
+     * Indicates BTM request frame handling status.
+     *
+     * @param BssTmData Data retrieved from received BSS transition management
+     * request frame.
+     */
+    oneway onBssTmHandlingDone(BssTmData tmData);
+
+    /**
+     * Indicates an EAP authentication failure.
+     */
+    oneway onEapFailure_1_3(uint32_t errorCode);
+
+    /**
+     * Used to indicate a state change event on this particular iface. If this
+     * event is triggered by a particular network, the |SupplicantNetworkId|,
+     * |ssid|, |bssid| parameters must indicate the parameters of the network/AP
+     * which caused this state transition.
+     *
+     * @param newState New State of the interface. This must be one of the |State|
+     *        values above.
+     * @param bssid BSSID of the corresponding AP which caused this state
+     *        change event. This must be zero'ed if this event is not
+     *        specific to a particular network.
+     * @param id ID of the corresponding network which caused this
+     *        state change event. This must be invalid (UINT32_MAX) if this
+     *        event is not specific to a particular network.
+     * @param ssid SSID of the corresponding network which caused this state
+     *        change event. This must be empty if this event is not specific
+     *        to a particular network.
+     * @param filsHlpSent If FILS HLP IEs were included in this association.
+     */
+    oneway onStateChanged_1_3(State newState, Bssid bssid, SupplicantNetworkId id, Ssid ssid,
+        bool filsHlpSent);
+};
diff --git a/wifi/supplicant/1.3/ISupplicantStaNetwork.hal b/wifi/supplicant/1.3/ISupplicantStaNetwork.hal
new file mode 100644
index 0000000..0566a21
--- /dev/null
+++ b/wifi/supplicant/1.3/ISupplicantStaNetwork.hal
@@ -0,0 +1,291 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi.supplicant@1.3;
+
+import @1.0::ISupplicantStaNetwork;
+import @1.0::SupplicantStatus;
+import @1.2::ISupplicantStaNetwork;
+
+/**
+ * Interface exposed by the supplicant for each station mode network
+ * configuration it controls.
+ */
+interface ISupplicantStaNetwork extends @1.2::ISupplicantStaNetwork {
+    /**
+     * Possible mask of values for Proto param.
+     */
+    enum ProtoMask : @1.0::ISupplicantStaNetwork.ProtoMask {
+        WAPI = 1 << 2,
+    };
+
+    /**
+     * Possible mask of values for KeyMgmt param.
+     */
+    enum KeyMgmtMask : @1.2::ISupplicantStaNetwork.KeyMgmtMask {
+        /*
+         * WAPI Psk
+         */
+        WAPI_PSK = 1 << 12,
+        /**
+         * WAPI Cert
+         */
+        WAPI_CERT = 1 << 13,
+        /**
+         * FILS shared key authentication with sha-256
+         */
+        FILS_SHA256 = 1 << 18,
+        /**
+         * FILS shared key authentication with sha-384
+         */
+        FILS_SHA384 = 1 << 19,
+    };
+
+    /**
+     * Possible mask of values for PairwiseCipher param.
+     */
+    enum PairwiseCipherMask : @1.2::ISupplicantStaNetwork.PairwiseCipherMask {
+        /**
+         * SMS4 Pairwise Cipher
+         */
+        SMS4 = 1 << 7,
+    };
+
+    /**
+     * Possible mask of values for GroupCipher param.
+     */
+    enum GroupCipherMask : @1.2::ISupplicantStaNetwork.GroupCipherMask {
+        /**
+         * SMS4 Group Cipher
+         */
+        SMS4 = 1 << 7,
+    };
+
+    /**
+     * Possible mask of values for AuthAlg param.
+     */
+    enum AuthAlgMask : @1.0::ISupplicantStaNetwork.AuthAlgMask {
+        SAE = 1 << 4,
+    };
+
+    /**
+     * Set OCSP (Online Certificate Status Protocol) type for this network.
+     *
+     * @param ocspType value to set.
+     * @return status Status of the operation.
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_ARGS_INVALID|,
+     *         |SupplicantStatusCode.FAILURE_NETWORK_INVALID|
+     */
+    setOcsp(OcspType ocspType) generates (SupplicantStatus status);
+
+    /**
+     * Get OCSP (Online Certificate Status Protocol) type for this network.
+     *
+     * @return status Status of the operation.
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_ARGS_INVALID|,
+     *         |SupplicantStatusCode.FAILURE_NETWORK_INVALID|
+     * @return ocspType ocsp type.
+     */
+    getOcsp() generates (SupplicantStatus status, OcspType ocspType);
+
+    /**
+     * Set key management mask for the network.
+     *
+     * @param keyMgmtMask value to set.
+     *        Combination of |KeyMgmtMask| values.
+     * @return status Status of the operation.
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_ARGS_INVALID|,
+     *         |SupplicantStatusCode.FAILURE_NETWORK_INVALID|,
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|
+     */
+    setKeyMgmt_1_3(bitfield<KeyMgmtMask> keyMgmtMask) generates (SupplicantStatus status);
+
+    /**
+     * Get the key mgmt mask set for the network.
+     *
+     * @return status Status of the operation.
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_NETWORK_INVALID|,
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|
+     * @return keyMgmtMask Combination of |KeyMgmtMask| values.
+     */
+    getKeyMgmt_1_3() generates (SupplicantStatus status, bitfield<KeyMgmtMask> keyMgmtMask);
+
+    /**
+     * Set proto mask for the network.
+     *
+     * @param protoMask value to set.
+     *        Combination of |ProtoMask| values.
+     * @return status Status of the operation.
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_ARGS_INVALID|,
+     *         |SupplicantStatusCode.FAILURE_NETWORK_INVALID|,
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|
+     */
+    setProto_1_3(bitfield<ProtoMask> protoMask) generates (SupplicantStatus status);
+
+    /**
+     * Get the proto mask set for the network.
+     *
+     * @return status Status of the operation.
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_NETWORK_INVALID|,
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|
+     * @return protoMask Combination of |ProtoMask| values.
+     */
+    getProto_1_3() generates (SupplicantStatus status, bitfield<ProtoMask> protoMask);
+
+    /**
+     * Set group cipher mask for the network.
+     *
+     * @param groupCipherMask value to set.
+     *        Combination of |ProtoMask| values.
+     * @return status Status of the operation.
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_ARGS_INVALID|,
+     *         |SupplicantStatusCode.FAILURE_NETWORK_INVALID|,
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|
+     */
+    setGroupCipher_1_3(bitfield<GroupCipherMask> groupCipherMask)
+        generates (SupplicantStatus status);
+
+    /**
+     * Get the pairwise cipher mask set for the network.
+     *
+     * @return status Status of the operation.
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_NETWORK_INVALID|,
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|
+     * @return pairwiseCipherMask Combination of |PairwiseCipherMask| values.
+     */
+    getPairwiseCipher_1_3()
+        generates (SupplicantStatus status, bitfield<PairwiseCipherMask> pairwiseCipherMask);
+
+    /**
+     * Set pairwise cipher mask for the network.
+     *
+     * @param pairwiseCipherMask value to set.
+     *        Combination of |ProtoMask| values.
+     * @return status Status of the operation.
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_ARGS_INVALID|,
+     *         |SupplicantStatusCode.FAILURE_NETWORK_INVALID|,
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|
+     */
+    setPairwiseCipher_1_3(bitfield<PairwiseCipherMask> pairwiseCipherMask)
+        generates (SupplicantStatus status);
+
+    /**
+     * Get the group cipher mask set for the network.
+     *
+     * @return status Status of the operation.
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_NETWORK_INVALID|,
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|
+     * @return groupCipherMask Combination of |GroupCipherMask| values.
+     */
+    getGroupCipher_1_3()
+        generates (SupplicantStatus status, bitfield<GroupCipherMask> groupCipherMask);
+
+    /**
+     * Set WAPI certificate suite for this network.
+     *
+     * @param suite value to set.
+     * @return status Status of the operation.
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_ARGS_INVALID|,
+     *         |SupplicantStatusCode.FAILURE_NETWORK_INVALID|,
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|
+     */
+    setWapiCertSuite(string suite) generates (SupplicantStatus status);
+
+    /**
+     * Get WAPI certificate suite set for this network.
+     *
+     * @return status Status of the operation.
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_NETWORK_INVALID|,
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|
+     * @return suite The name of a suite.
+     */
+    getWapiCertSuite() generates (SupplicantStatus status, string suite);
+
+    /**
+     * Add a PMK into supplicant PMK cache.
+     *
+     * @param serializedEntry is serialized PMK cache entry, the content is
+     *              opaque for the framework and depends on the native implementation.
+     * @return status Status of the operation
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_ARGS_INVALID|,
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
+     *         |SupplicantStatusCode.FAILURE_NETWORK_INVALID|
+     */
+    setPmkCache(vec<uint8_t> serializedEntry) generates (SupplicantStatus status);
+
+    /**
+     * Set auth alg mask for the network.
+     *
+     * @param authAlgMask value to set.
+     *        Combination of |ProtoMask| values.
+     * @return status Status of the operation.
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_ARGS_INVALID|,
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
+     *         |SupplicantStatusCode.FAILURE_NETWORK_INVALID|
+     */
+    setAuthAlg_1_3(bitfield<AuthAlgMask> authAlgMask) generates (SupplicantStatus status);
+
+    /**
+     * Get the auth alg mask set for the network.
+     *
+     * @return status Status of the operation.
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_NETWORK_INVALID|
+     * @return authAlgMask Combination of |AuthAlgMask| values.
+     */
+    getAuthAlg_1_3() generates (SupplicantStatus status, bitfield<AuthAlgMask> authAlgMask);
+
+    /**
+     * Enable EAP ERP for this network.
+     *
+     * @param enable true to set, false otherwise.
+     * @return status Status of the operation.
+     *         Possible status codes:
+     *         |SupplicantStatusCode.SUCCESS|,
+     *         |SupplicantStatusCode.FAILURE_UNKNOWN|,
+     *         |SupplicantStatusCode.FAILURE_NETWORK_INVALID|
+     */
+    setEapErp(bool enable) generates (SupplicantStatus status);
+};
diff --git a/wifi/supplicant/1.3/types.hal b/wifi/supplicant/1.3/types.hal
new file mode 100644
index 0000000..a4b2ff7
--- /dev/null
+++ b/wifi/supplicant/1.3/types.hal
@@ -0,0 +1,119 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.wifi.supplicant@1.3;
+
+import @1.2::DppProgressCode;
+import @1.2::DppFailureCode;
+
+import android.hardware.wifi@1.0::WifiChannelWidthInMhz;
+
+/**
+ * OcspType: The type of OCSP request.
+ */
+enum OcspType : uint32_t {
+    NONE,
+    REQUEST_CERT_STATUS,
+    REQUIRE_CERT_STATUS,
+    REQUIRE_ALL_CERTS_STATUS,
+};
+
+/**
+ * Wifi Technologies
+ */
+enum WifiTechnology : uint32_t {
+    UNKNOWN = 0,
+    /**
+     * For 802.11a/b/g
+     */
+    LEGACY = 1,
+    /**
+     * For 802.11n
+     */
+    HT = 2,
+    /**
+     * For 802.11ac
+     */
+    VHT = 3,
+    /**
+     * For 802.11ax
+     */
+    HE = 4,
+};
+
+/**
+ * Connection Capabilities supported by current network and device
+ */
+struct ConnectionCapabilities {
+    /**
+     * Wifi Technology
+     */
+    WifiTechnology technology;
+    /**
+     * channel bandwidth
+     */
+    WifiChannelWidthInMhz channelBandwidth;
+    /**
+     * max number of Tx spatial streams
+     */
+    uint32_t maxNumberTxSpatialStreams;
+    /**
+     * max number of Rx spatial streams
+     */
+    uint32_t maxNumberRxSpatialStreams;
+};
+
+/**
+ * WPA Driver capability.
+ */
+enum WpaDriverCapabilitiesMask : uint32_t {
+    /**
+     * Multi Band Operation.
+     */
+    MBO = 1 << 0,
+    /**
+     * Optimized Connectivity Experience.
+     */
+    OCE = 1 << 1,
+};
+
+/**
+ * DppProgressCode: Progress codes for DPP (Easy Connect)
+ */
+enum DppProgressCode : @1.2::DppProgressCode {
+    CONFIGURATION_SENT_WAITING_RESPONSE,
+    CONFIGURATION_ACCEPTED,
+};
+
+/**
+ * DppSuccessCode: Success codes for DPP (Easy Connect) Configurator
+ */
+enum DppSuccessCode : uint32_t {
+    /*
+     * Replaces @1.2::onDppSuccessConfigSent()
+     */
+    CONFIGURATION_SENT,
+    CONFIGURATION_APPLIED,
+};
+
+/**
+ * DppFailureCode: Error codes for DPP (Easy Connect)
+ */
+enum DppFailureCode : @1.2::DppFailureCode {
+    CONFIGURATION_REJECTED,
+    CANNOT_FIND_NETWORK,
+    ENROLLEE_AUTHENTICATION,
+};
diff --git a/wifi/1.3/default/OWNERS b/wifi/supplicant/1.3/vts/OWNERS
similarity index 100%
copy from wifi/1.3/default/OWNERS
copy to wifi/supplicant/1.3/vts/OWNERS
diff --git a/wifi/supplicant/1.3/vts/functional/Android.bp b/wifi/supplicant/1.3/vts/functional/Android.bp
new file mode 100644
index 0000000..3dabe7c
--- /dev/null
+++ b/wifi/supplicant/1.3/vts/functional/Android.bp
@@ -0,0 +1,68 @@
+//
+// Copyright (C) 2019 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+cc_library_static {
+    name: "VtsHalWifiSupplicantV1_3TargetTestUtil",
+    defaults: ["VtsHalTargetTestDefaults"],
+    srcs: ["supplicant_hidl_test_utils_1_3.cpp"],
+    export_include_dirs: [
+        ".",
+    ],
+    static_libs: [
+        "VtsHalWifiV1_0TargetTestUtil",
+        "VtsHalWifiSupplicantV1_0TargetTestUtil",
+        "VtsHalWifiSupplicantV1_1TargetTestUtil",
+        "VtsHalWifiSupplicantV1_2TargetTestUtil",
+        "android.hardware.wifi.supplicant@1.0",
+        "android.hardware.wifi.supplicant@1.1",
+        "android.hardware.wifi.supplicant@1.2",
+        "android.hardware.wifi.supplicant@1.3",
+        "android.hardware.wifi@1.0",
+        "libgmock",
+        "libwifi-system",
+        "libwifi-system-iface",
+    ],
+}
+
+cc_test {
+    name: "VtsHalWifiSupplicantV1_3TargetTest",
+    defaults: ["VtsHalTargetTestDefaults"],
+    srcs: [
+        "VtsHalWifiSupplicantV1_3TargetTest.cpp",
+        "supplicant_sta_iface_hidl_test.cpp",
+        "supplicant_sta_network_hidl_test.cpp",
+    ],
+    static_libs: [
+        "VtsHalWifiV1_0TargetTestUtil",
+        "VtsHalWifiSupplicantV1_0TargetTestUtil",
+        "VtsHalWifiSupplicantV1_1TargetTestUtil",
+        "VtsHalWifiSupplicantV1_2TargetTestUtil",
+        "VtsHalWifiSupplicantV1_3TargetTestUtil",
+        "android.hardware.wifi.supplicant@1.0",
+        "android.hardware.wifi.supplicant@1.1",
+        "android.hardware.wifi.supplicant@1.2",
+        "android.hardware.wifi.supplicant@1.3",
+        "android.hardware.wifi@1.0",
+        "android.hardware.wifi@1.1",
+        "libgmock",
+        "libwifi-system",
+        "libwifi-system-iface",
+    ],
+    test_suites: [
+        "general-tests",
+        "vts-core",
+    ],
+}
diff --git a/wifi/supplicant/1.3/vts/functional/VtsHalWifiSupplicantV1_3TargetTest.cpp b/wifi/supplicant/1.3/vts/functional/VtsHalWifiSupplicantV1_3TargetTest.cpp
new file mode 100644
index 0000000..9dbeee1
--- /dev/null
+++ b/wifi/supplicant/1.3/vts/functional/VtsHalWifiSupplicantV1_3TargetTest.cpp
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "supplicant_hidl_test_utils.h"
+
+// TODO(b/143892896): Remove this file after wifi_hidl_test_utils.cpp is
+// updated.
+WifiSupplicantHidlEnvironment* gEnv = nullptr;
diff --git a/wifi/supplicant/1.3/vts/functional/supplicant_hidl_test_utils_1_3.cpp b/wifi/supplicant/1.3/vts/functional/supplicant_hidl_test_utils_1_3.cpp
new file mode 100644
index 0000000..7ea5462
--- /dev/null
+++ b/wifi/supplicant/1.3/vts/functional/supplicant_hidl_test_utils_1_3.cpp
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <VtsHalHidlTargetTestBase.h>
+#include <android-base/logging.h>
+
+#include "supplicant_hidl_test_utils.h"
+#include "supplicant_hidl_test_utils_1_3.h"
+
+using ::android::sp;
+using ::android::hardware::wifi::supplicant::V1_3::ISupplicant;
+using ::android::hardware::wifi::supplicant::V1_3::ISupplicantStaIface;
+using ::android::hardware::wifi::supplicant::V1_3::ISupplicantStaNetwork;
+
+sp<ISupplicantStaIface> getSupplicantStaIface_1_3(
+    const android::sp<android::hardware::wifi::supplicant::V1_3::ISupplicant>&
+        supplicant) {
+    return ISupplicantStaIface::castFrom(getSupplicantStaIface(supplicant));
+}
+
+sp<ISupplicantStaNetwork> createSupplicantStaNetwork_1_3(
+    const android::sp<android::hardware::wifi::supplicant::V1_3::ISupplicant>&
+        supplicant) {
+    return ISupplicantStaNetwork::castFrom(
+        createSupplicantStaNetwork(supplicant));
+}
+
+sp<ISupplicant> getSupplicant_1_3(const std::string& supplicant_instance_name,
+                                  bool isP2pOn) {
+    return ISupplicant::castFrom(
+        getSupplicant(supplicant_instance_name, isP2pOn));
+}
diff --git a/wifi/supplicant/1.3/vts/functional/supplicant_hidl_test_utils_1_3.h b/wifi/supplicant/1.3/vts/functional/supplicant_hidl_test_utils_1_3.h
new file mode 100644
index 0000000..f8dca13
--- /dev/null
+++ b/wifi/supplicant/1.3/vts/functional/supplicant_hidl_test_utils_1_3.h
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef SUPPLICANT_HIDL_TEST_UTILS_1_3_H
+#define SUPPLICANT_HIDL_TEST_UTILS_1_3_H
+
+#include <android/hardware/wifi/supplicant/1.3/ISupplicant.h>
+#include <android/hardware/wifi/supplicant/1.3/ISupplicantStaIface.h>
+#include <android/hardware/wifi/supplicant/1.3/ISupplicantStaNetwork.h>
+
+android::sp<android::hardware::wifi::supplicant::V1_3::ISupplicantStaIface>
+getSupplicantStaIface_1_3(
+    const android::sp<android::hardware::wifi::supplicant::V1_3::ISupplicant>&
+        supplicant);
+android::sp<android::hardware::wifi::supplicant::V1_3::ISupplicantStaNetwork>
+createSupplicantStaNetwork_1_3(
+    const android::sp<android::hardware::wifi::supplicant::V1_3::ISupplicant>&
+        supplicant);
+android::sp<android::hardware::wifi::supplicant::V1_3::ISupplicant>
+getSupplicant_1_3(const std::string& supplicant_instance_name, bool isP2pOn);
+#endif /* SUPPLICANT_HIDL_TEST_UTILS_1_3_H */
diff --git a/wifi/supplicant/1.3/vts/functional/supplicant_sta_iface_hidl_test.cpp b/wifi/supplicant/1.3/vts/functional/supplicant_sta_iface_hidl_test.cpp
new file mode 100644
index 0000000..f7019d2
--- /dev/null
+++ b/wifi/supplicant/1.3/vts/functional/supplicant_sta_iface_hidl_test.cpp
@@ -0,0 +1,600 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <VtsCoreUtil.h>
+#include <android/hardware/wifi/1.1/IWifi.h>
+#include <android/hardware/wifi/supplicant/1.1/ISupplicant.h>
+#include <android/hardware/wifi/supplicant/1.2/types.h>
+#include <android/hardware/wifi/supplicant/1.3/ISupplicant.h>
+#include <android/hardware/wifi/supplicant/1.3/ISupplicantStaIface.h>
+#include <android/hardware/wifi/supplicant/1.3/ISupplicantStaIfaceCallback.h>
+#include <android/hardware/wifi/supplicant/1.3/ISupplicantStaNetwork.h>
+#include <android/hardware/wifi/supplicant/1.3/types.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/HidlSupport.h>
+#include <hidl/ServiceManagement.h>
+#include <hidl/Status.h>
+
+#include "supplicant_hidl_test_utils.h"
+#include "supplicant_hidl_test_utils_1_3.h"
+
+using ::android::sp;
+using ::android::hardware::hidl_array;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::hardware::wifi::supplicant::V1_0::SupplicantStatus;
+using ::android::hardware::wifi::supplicant::V1_0::SupplicantStatusCode;
+using ::android::hardware::wifi::supplicant::V1_2::DppAkm;
+using ::android::hardware::wifi::supplicant::V1_2::DppFailureCode;
+using ::android::hardware::wifi::supplicant::V1_2::DppNetRole;
+using ::android::hardware::wifi::supplicant::V1_2::DppProgressCode;
+using ::android::hardware::wifi::supplicant::V1_3::ConnectionCapabilities;
+using ::android::hardware::wifi::supplicant::V1_3::DppSuccessCode;
+using ::android::hardware::wifi::supplicant::V1_3::ISupplicant;
+using ::android::hardware::wifi::supplicant::V1_3::ISupplicantStaIface;
+using ::android::hardware::wifi::supplicant::V1_3::ISupplicantStaIfaceCallback;
+using ::android::hardware::wifi::supplicant::V1_3::ISupplicantStaNetwork;
+using ::android::hardware::wifi::supplicant::V1_3::WpaDriverCapabilitiesMask;
+
+#define TIMEOUT_PERIOD 60
+class IfaceDppCallback;
+
+class SupplicantStaIfaceHidlTest
+    : public ::testing::TestWithParam<std::tuple<std::string, std::string>> {
+   public:
+    virtual void SetUp() override {
+        wifi_v1_0_instance_name_ = std::get<0>(GetParam());
+        supplicant_v1_3_instance_name_ = std::get<1>(GetParam());
+        isP2pOn_ =
+            testing::deviceSupportsFeature("android.hardware.wifi.direct");
+
+        startSupplicantAndWaitForHidlService(wifi_v1_0_instance_name_,
+                                             supplicant_v1_3_instance_name_);
+        supplicant_ =
+            getSupplicant_1_3(supplicant_v1_3_instance_name_, isP2pOn_);
+        EXPECT_TRUE(turnOnExcessiveLogging(supplicant_));
+        sta_iface_ = getSupplicantStaIface_1_3(supplicant_);
+        ASSERT_NE(sta_iface_.get(), nullptr);
+    }
+
+    virtual void TearDown() override {
+        stopSupplicant(wifi_v1_0_instance_name_);
+    }
+
+    int64_t pmkCacheExpirationTimeInSec;
+    std::vector<uint8_t> serializedPmkCacheEntry;
+
+    // Data retrieved from BSS transition management frame.
+    ISupplicantStaIfaceCallback::BssTmData tmData;
+
+    enum DppCallbackType {
+        ANY_CALLBACK = -2,
+        INVALID = -1,
+
+        EVENT_SUCCESS = 0,
+        EVENT_PROGRESS,
+        EVENT_FAILURE,
+    };
+
+    DppCallbackType dppCallbackType;
+    uint32_t code;
+
+    /* Used as a mechanism to inform the test about data/event callback */
+    inline void notify() {
+        std::unique_lock<std::mutex> lock(mtx_);
+        count_++;
+        cv_.notify_one();
+    }
+
+    /* Test code calls this function to wait for data/event callback */
+    inline std::cv_status wait(DppCallbackType waitForCallbackType) {
+        std::unique_lock<std::mutex> lock(mtx_);
+        EXPECT_NE(INVALID, waitForCallbackType);  // can't ASSERT in a
+                                                  // non-void-returning method
+        auto now = std::chrono::system_clock::now();
+        std::cv_status status =
+            cv_.wait_until(lock, now + std::chrono::seconds(TIMEOUT_PERIOD));
+        return status;
+    }
+
+   private:
+    // synchronization objects
+    std::mutex mtx_;
+    std::condition_variable cv_;
+    int count_;
+
+   protected:
+    // ISupplicantStaIface object used for all tests in this fixture.
+    sp<ISupplicantStaIface> sta_iface_;
+    sp<ISupplicant> supplicant_;
+    bool isP2pOn_ = false;
+    std::string wifi_v1_0_instance_name_;
+    std::string supplicant_v1_3_instance_name_;
+
+    bool isDppSupported() {
+        uint32_t keyMgmtMask = 0;
+
+        // We need to first get the key management capabilities from the device.
+        // If DPP is not supported, we just pass the test.
+        sta_iface_->getKeyMgmtCapabilities_1_3(
+            [&](const SupplicantStatus& status, uint32_t keyMgmtMaskInternal) {
+                EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+                keyMgmtMask = keyMgmtMaskInternal;
+            });
+
+        if (!(keyMgmtMask & ISupplicantStaNetwork::KeyMgmtMask::DPP)) {
+            // DPP not supported
+            return false;
+        }
+
+        return true;
+    }
+};
+
+class IfaceCallback : public ISupplicantStaIfaceCallback {
+    Return<void> onNetworkAdded(uint32_t /* id */) override { return Void(); }
+    Return<void> onNetworkRemoved(uint32_t /* id */) override { return Void(); }
+    Return<void> onStateChanged(
+        ISupplicantStaIfaceCallback::State /* newState */,
+        const hidl_array<uint8_t, 6>& /*bssid */, uint32_t /* id */,
+        const hidl_vec<uint8_t>& /* ssid */) override {
+        return Void();
+    }
+    Return<void> onAnqpQueryDone(
+        const hidl_array<uint8_t, 6>& /* bssid */,
+        const ISupplicantStaIfaceCallback::AnqpData& /* data */,
+        const ISupplicantStaIfaceCallback::Hs20AnqpData& /* hs20Data */)
+        override {
+        return Void();
+    }
+    virtual Return<void> onHs20IconQueryDone(
+        const hidl_array<uint8_t, 6>& /* bssid */,
+        const hidl_string& /* fileName */,
+        const hidl_vec<uint8_t>& /* data */) override {
+        return Void();
+    }
+    virtual Return<void> onHs20SubscriptionRemediation(
+        const hidl_array<uint8_t, 6>& /* bssid */,
+        ISupplicantStaIfaceCallback::OsuMethod /* osuMethod */,
+        const hidl_string& /* url*/) override {
+        return Void();
+    }
+    Return<void> onHs20DeauthImminentNotice(
+        const hidl_array<uint8_t, 6>& /* bssid */, uint32_t /* reasonCode */,
+        uint32_t /* reAuthDelayInSec */,
+        const hidl_string& /* url */) override {
+        return Void();
+    }
+    Return<void> onDisconnected(const hidl_array<uint8_t, 6>& /* bssid */,
+                                bool /* locallyGenerated */,
+                                ISupplicantStaIfaceCallback::ReasonCode
+                                /* reasonCode */) override {
+        return Void();
+    }
+    Return<void> onAssociationRejected(
+        const hidl_array<uint8_t, 6>& /* bssid */,
+        ISupplicantStaIfaceCallback::StatusCode /* statusCode */,
+        bool /*timedOut */) override {
+        return Void();
+    }
+    Return<void> onAuthenticationTimeout(
+        const hidl_array<uint8_t, 6>& /* bssid */) override {
+        return Void();
+    }
+    Return<void> onBssidChanged(
+        ISupplicantStaIfaceCallback::BssidChangeReason /* reason */,
+        const hidl_array<uint8_t, 6>& /* bssid */) override {
+        return Void();
+    }
+    Return<void> onEapFailure() override { return Void(); }
+    Return<void> onEapFailure_1_1(
+        ISupplicantStaIfaceCallback::EapErrorCode /* eapErrorCode */) override {
+        return Void();
+    }
+    Return<void> onEapFailure_1_3(uint32_t /* eapErrorCode */) override {
+        return Void();
+    }
+    Return<void> onWpsEventSuccess() override { return Void(); }
+    Return<void> onWpsEventFail(
+        const hidl_array<uint8_t, 6>& /* bssid */,
+        ISupplicantStaIfaceCallback::WpsConfigError /* configError */,
+        ISupplicantStaIfaceCallback::WpsErrorIndication /* errorInd */)
+        override {
+        return Void();
+    }
+    Return<void> onWpsEventPbcOverlap() override { return Void(); }
+    Return<void> onExtRadioWorkStart(uint32_t /* id */) override {
+        return Void();
+    }
+    Return<void> onExtRadioWorkTimeout(uint32_t /* id*/) override {
+        return Void();
+    }
+    Return<void> onDppSuccessConfigReceived(
+        const hidl_vec<uint8_t>& /* ssid */, const hidl_string& /* password */,
+        const hidl_array<uint8_t, 32>& /* psk */,
+        DppAkm /* securityAkm */) override {
+        return Void();
+    }
+    Return<void> onDppSuccessConfigSent() override { return Void(); }
+    Return<void> onDppProgress(DppProgressCode /* code */) override {
+        return Void();
+    }
+    Return<void> onDppFailure(DppFailureCode /* code */) override {
+        return Void();
+    }
+    Return<void> onDppSuccess(DppSuccessCode /* code */) override {
+        return Void();
+    }
+    Return<void> onDppProgress_1_3(
+        ::android::hardware::wifi::supplicant::V1_3::DppProgressCode /* code */)
+        override {
+        return Void();
+    }
+    Return<void> onDppFailure_1_3(
+        ::android::hardware::wifi::supplicant::V1_3::DppFailureCode /* code */,
+        const hidl_string& /* ssid */, const hidl_string& /* channelList */,
+        const hidl_vec<uint16_t>& /* bandList */) override {
+        return Void();
+    }
+    Return<void> onPmkCacheAdded(
+        int64_t /* expirationTimeInSec */,
+        const hidl_vec<uint8_t>& /* serializedEntry */) override {
+        return Void();
+    }
+    Return<void> onBssTmHandlingDone(
+        const ISupplicantStaIfaceCallback::BssTmData& /* data */) override {
+        return Void();
+    }
+    Return<void> onStateChanged_1_3(
+        ISupplicantStaIfaceCallback::State /* newState */,
+        const hidl_array<uint8_t, 6>& /*bssid */, uint32_t /* id */,
+        const hidl_vec<uint8_t>& /* ssid */, bool /* filsHlpSent */) override {
+        return Void();
+    }
+};
+
+class IfacePmkCacheCallback : public IfaceCallback {
+    SupplicantStaIfaceHidlTest& parent_;
+    Return<void> onPmkCacheAdded(
+        int64_t expirationTimeInSec,
+        const hidl_vec<uint8_t>& serializedEntry) override {
+        parent_.pmkCacheExpirationTimeInSec = expirationTimeInSec;
+        parent_.serializedPmkCacheEntry = serializedEntry;
+        return Void();
+    }
+
+   public:
+    IfacePmkCacheCallback(SupplicantStaIfaceHidlTest& parent)
+        : parent_(parent) {}
+};
+
+class IfaceDppCallback : public IfaceCallback {
+    SupplicantStaIfaceHidlTest& parent_;
+    Return<void> onDppSuccess(DppSuccessCode code) override {
+        parent_.code = (uint32_t)code;
+        parent_.dppCallbackType =
+            SupplicantStaIfaceHidlTest::DppCallbackType::EVENT_SUCCESS;
+        parent_.notify();
+        return Void();
+    }
+    Return<void> onDppProgress_1_3(
+        ::android::hardware::wifi::supplicant::V1_3::DppProgressCode code)
+        override {
+        parent_.code = (uint32_t)code;
+        parent_.dppCallbackType =
+            SupplicantStaIfaceHidlTest::DppCallbackType::EVENT_PROGRESS;
+        parent_.notify();
+        return Void();
+    }
+    Return<void> onDppFailure_1_3(
+        ::android::hardware::wifi::supplicant::V1_3::DppFailureCode code,
+        const hidl_string& ssid __attribute__((unused)),
+        const hidl_string& channelList __attribute__((unused)),
+        const hidl_vec<uint16_t>& bandList __attribute__((unused))) override {
+        parent_.code = (uint32_t)code;
+        parent_.dppCallbackType =
+            SupplicantStaIfaceHidlTest::DppCallbackType::EVENT_FAILURE;
+        parent_.notify();
+        return Void();
+    }
+
+   public:
+    IfaceDppCallback(SupplicantStaIfaceHidlTest& parent) : parent_(parent){};
+};
+
+class IfaceBssTmHandlingDoneCallback : public IfaceCallback {
+    SupplicantStaIfaceHidlTest& parent_;
+    Return<void> onBssTmHandlingDone(
+        const ISupplicantStaIfaceCallback::BssTmData& data) override {
+        parent_.tmData = data;
+        return Void();
+    }
+
+   public:
+    IfaceBssTmHandlingDoneCallback(SupplicantStaIfaceHidlTest& parent)
+        : parent_(parent) {}
+};
+
+/*
+ * RegisterCallback_1_3
+ */
+TEST_P(SupplicantStaIfaceHidlTest, RegisterCallback_1_3) {
+    sta_iface_->registerCallback_1_3(
+        new IfaceCallback(), [](const SupplicantStatus& status) {
+            EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+        });
+}
+
+/*
+ * getConnectionCapabilities
+ */
+TEST_P(SupplicantStaIfaceHidlTest, GetConnectionCapabilities) {
+    sta_iface_->getConnectionCapabilities(
+        [&](const SupplicantStatus& status,
+            ConnectionCapabilities /* capabilities */) {
+            EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+        });
+}
+
+/*
+ * GetWpaDriverCapabilities
+ */
+TEST_P(SupplicantStaIfaceHidlTest, GetWpaDriverCapabilities) {
+    sta_iface_->getWpaDriverCapabilities(
+        [&](const SupplicantStatus& status, uint32_t) {
+            EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+        });
+}
+
+/*
+ * SetMboCellularDataStatus
+ */
+TEST_P(SupplicantStaIfaceHidlTest, SetMboCellularDataStatus) {
+    uint32_t driverCapMask = 0;
+
+    // Get MBO support from the device.
+    sta_iface_->getWpaDriverCapabilities(
+        [&](const SupplicantStatus& status, uint32_t driverCapMaskInternal) {
+            EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+
+            driverCapMask = driverCapMaskInternal;
+        });
+
+    SupplicantStatusCode expectedStatusCode =
+        (driverCapMask & WpaDriverCapabilitiesMask::MBO)
+            ? SupplicantStatusCode::SUCCESS
+            : SupplicantStatusCode::FAILURE_UNKNOWN;
+
+    sta_iface_->setMboCellularDataStatus(
+        true, [expectedStatusCode](const SupplicantStatus& status) {
+            EXPECT_EQ(expectedStatusCode, status.code);
+        });
+}
+
+/*
+ * GetKeyMgmtCapabilities_1_3
+ */
+TEST_P(SupplicantStaIfaceHidlTest, GetKeyMgmtCapabilities_1_3) {
+    sta_iface_->getKeyMgmtCapabilities_1_3([&](const SupplicantStatus& status,
+                                               uint32_t keyMgmtMask) {
+        if (SupplicantStatusCode::SUCCESS != status.code) {
+            // for unsupport case
+            EXPECT_EQ(SupplicantStatusCode::FAILURE_UNKNOWN, status.code);
+        } else {
+            // Even though capabilities vary, these two are always set in HAL
+            // v1.3
+            EXPECT_TRUE(keyMgmtMask & ISupplicantStaNetwork::KeyMgmtMask::NONE);
+            EXPECT_TRUE(keyMgmtMask &
+                        ISupplicantStaNetwork::KeyMgmtMask::IEEE8021X);
+        }
+    });
+}
+
+/*
+ * StartDppEnrolleeInitiator
+ */
+TEST_P(SupplicantStaIfaceHidlTest, StartDppEnrolleeInitiator) {
+    // We need to first get the key management capabilities from the device.
+    // If DPP is not supported, we just pass the test.
+    if (!isDppSupported()) {
+        // DPP not supported
+        return;
+    }
+
+    hidl_string uri =
+        "DPP:C:81/1;M:48d6d5bd1de1;I:G1197843;K:MDkwEwYHKoZIzj0CAQYIKoZIzj"
+        "0DAQcDIgAD0edY4X3N//HhMFYsZfMbQJTiNFtNIWF/cIwMB/gzqOM=;;";
+    uint32_t peer_id = 0;
+
+    // Register callbacks
+    sta_iface_->registerCallback_1_3(
+        new IfaceDppCallback(*this), [](const SupplicantStatus& status) {
+            EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+        });
+
+    // Add a peer URI
+    sta_iface_->addDppPeerUri(
+        uri, [&](const SupplicantStatus& status, uint32_t id) {
+            EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+            EXPECT_NE(0, id);
+            EXPECT_NE(-1, id);
+
+            peer_id = id;
+        });
+
+    // Start DPP as Enrollee-Initiator. Since this operation requires two
+    // devices, we start the operation and expect a timeout.
+    sta_iface_->startDppEnrolleeInitiator(
+        peer_id, 0, [&](const SupplicantStatus& status) {
+            EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+        });
+
+    // Wait for the timeout callback
+    ASSERT_EQ(std::cv_status::no_timeout,
+              wait(SupplicantStaIfaceHidlTest::DppCallbackType::EVENT_FAILURE));
+    ASSERT_EQ(SupplicantStaIfaceHidlTest::DppCallbackType::EVENT_FAILURE,
+              dppCallbackType);
+
+    // ...and then remove the peer URI.
+    sta_iface_->removeDppUri(peer_id, [&](const SupplicantStatus& status) {
+        EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+    });
+}
+
+/*
+ * StartDppConfiguratorInitiator
+ */
+TEST_P(SupplicantStaIfaceHidlTest, StartDppConfiguratorInitiator) {
+    // We need to first get the key management capabilities from the device.
+    // If DPP is not supported, we just pass the test.
+    if (!isDppSupported()) {
+        // DPP not supported
+        return;
+    }
+
+    hidl_string uri =
+        "DPP:C:81/1;M:48d6d5bd1de1;I:G1197843;K:MDkwEwYHKoZIzj0CAQYIKoZIzj"
+        "0DAQcDIgAD0edY4X3N//HhMFYsZfMbQJTiNFtNIWF/cIwMB/gzqOM=;;";
+    uint32_t peer_id = 0;
+
+    // Register callbacks
+    sta_iface_->registerCallback_1_3(
+        new IfaceDppCallback(*this), [](const SupplicantStatus& status) {
+            EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+        });
+
+    // Add a peer URI
+    sta_iface_->addDppPeerUri(
+        uri, [&](const SupplicantStatus& status, uint32_t id) {
+            EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+            EXPECT_NE(0, id);
+            EXPECT_NE(-1, id);
+
+            peer_id = id;
+        });
+
+    std::string ssid =
+        "6D795F746573745F73736964";  // 'my_test_ssid' encoded in hex
+    std::string password = "746F70736563726574";  // 'topsecret' encoded in hex
+
+    // Start DPP as Configurator-Initiator. Since this operation requires two
+    // devices, we start the operation and expect a timeout.
+    sta_iface_->startDppConfiguratorInitiator(
+        peer_id, 0, ssid, password, NULL, DppNetRole::STA, DppAkm::PSK,
+        [&](const SupplicantStatus& status) {
+            EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+        });
+
+    // Wait for the timeout callback
+    ASSERT_EQ(std::cv_status::no_timeout,
+              wait(SupplicantStaIfaceHidlTest::DppCallbackType::EVENT_FAILURE));
+    ASSERT_EQ(SupplicantStaIfaceHidlTest::DppCallbackType::EVENT_FAILURE,
+              dppCallbackType);
+
+    // ...and then remove the peer URI.
+    sta_iface_->removeDppUri(peer_id, [&](const SupplicantStatus& status) {
+        EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+    });
+}
+
+/*
+ * FilsHlpAddRequest
+ */
+TEST_P(SupplicantStaIfaceHidlTest, FilsHlpAddRequest) {
+    uint32_t keyMgmtMask = 0;
+    uint8_t destMacAddr[] = {0x00, 0x11, 0x22, 0x33, 0x44, 0x55};
+    std::vector<uint8_t> pktBuffer = {
+        0x08, 0x00, 0x45, 0x10, 0x01, 0x3a, 0x00, 0x00, 0x40, 0x00, 0x40, 0x11,
+        0x39, 0xa4, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0x00, 0x44,
+        0x00, 0x43, 0x01, 0x26, 0x77, 0x1e, 0x01, 0x01, 0x06, 0x00, 0x81, 0xf9,
+        0xf7, 0xcd, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x86, 0xc3,
+        0x65, 0xca, 0x34, 0x63, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+        0x00, 0x00, 0x00, 0x00, 0x63, 0x82, 0x53, 0x63, 0x35, 0x01, 0x01, 0x3d,
+        0x07, 0x01, 0x86, 0xc3, 0x65, 0xca, 0x34, 0x63, 0x39, 0x02, 0x05, 0xdc,
+        0x3c, 0x0e, 0x61, 0x6e, 0x64, 0x72, 0x6f, 0x69, 0x64, 0x2d, 0x64, 0x68,
+        0x63, 0x70, 0x2d, 0x52, 0x37, 0x0a, 0x01, 0x03, 0x06, 0x0f, 0x1a, 0x1c,
+        0x33, 0x3a, 0x3b, 0x2b, 0xff, 0x00};
+
+    sta_iface_->getKeyMgmtCapabilities_1_3(
+        [&](const SupplicantStatus& status, uint32_t keyMgmtMaskInternal) {
+            EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+            keyMgmtMask = keyMgmtMaskInternal;
+        });
+
+    SupplicantStatusCode expectedStatusCode =
+        (keyMgmtMask & (ISupplicantStaNetwork::KeyMgmtMask::FILS_SHA256 |
+                        ISupplicantStaNetwork::KeyMgmtMask::FILS_SHA384))
+            ? SupplicantStatusCode::SUCCESS
+            : SupplicantStatusCode::FAILURE_UNKNOWN;
+
+    sta_iface_->filsHlpAddRequest(
+        destMacAddr, pktBuffer,
+        [expectedStatusCode](const SupplicantStatus& status) {
+            EXPECT_EQ(expectedStatusCode, status.code);
+        });
+}
+
+/*
+ * FilsHlpFlushRequest
+ */
+TEST_P(SupplicantStaIfaceHidlTest, FilsHlpFlushRequest) {
+    uint32_t keyMgmtMask = 0;
+    sta_iface_->getKeyMgmtCapabilities_1_3(
+        [&](const SupplicantStatus& status, uint32_t keyMgmtMaskInternal) {
+            EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+            keyMgmtMask = keyMgmtMaskInternal;
+        });
+
+    SupplicantStatusCode expectedStatusCode =
+        (keyMgmtMask & (ISupplicantStaNetwork::KeyMgmtMask::FILS_SHA256 |
+                        ISupplicantStaNetwork::KeyMgmtMask::FILS_SHA384))
+            ? SupplicantStatusCode::SUCCESS
+            : SupplicantStatusCode::FAILURE_UNKNOWN;
+
+    sta_iface_->filsHlpFlushRequest(
+        [expectedStatusCode](const SupplicantStatus& status) {
+            EXPECT_EQ(expectedStatusCode, status.code);
+        });
+}
+INSTANTIATE_TEST_CASE_P(
+    PerInstance, SupplicantStaIfaceHidlTest,
+    testing::Combine(
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(
+            android::hardware::wifi::V1_0::IWifi::descriptor)),
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(
+            android::hardware::wifi::supplicant::V1_3::ISupplicant::
+                descriptor))),
+    android::hardware::PrintInstanceTupleNameToString<>);
diff --git a/wifi/supplicant/1.3/vts/functional/supplicant_sta_network_hidl_test.cpp b/wifi/supplicant/1.3/vts/functional/supplicant_sta_network_hidl_test.cpp
new file mode 100644
index 0000000..13f3366
--- /dev/null
+++ b/wifi/supplicant/1.3/vts/functional/supplicant_sta_network_hidl_test.cpp
@@ -0,0 +1,318 @@
+/*
+ * Copyright (C) 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <android-base/logging.h>
+
+#include <VtsCoreUtil.h>
+#include <VtsHalHidlTargetTestBase.h>
+#include <android/hardware/wifi/1.0/IWifi.h>
+#include <android/hardware/wifi/1.1/IWifi.h>
+#include <android/hardware/wifi/supplicant/1.3/ISupplicant.h>
+#include <android/hardware/wifi/supplicant/1.3/ISupplicantStaIface.h>
+#include <android/hardware/wifi/supplicant/1.3/ISupplicantStaNetwork.h>
+#include <gtest/gtest.h>
+#include <hidl/GtestPrinter.h>
+#include <hidl/ServiceManagement.h>
+
+#include "supplicant_hidl_test_utils.h"
+#include "supplicant_hidl_test_utils_1_3.h"
+
+using ::android::sp;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::wifi::supplicant::V1_0::SupplicantStatus;
+using ::android::hardware::wifi::supplicant::V1_0::SupplicantStatusCode;
+using ::android::hardware::wifi::supplicant::V1_3::ISupplicant;
+using ::android::hardware::wifi::supplicant::V1_3::ISupplicantStaIface;
+using ::android::hardware::wifi::supplicant::V1_3::ISupplicantStaNetwork;
+using ::android::hardware::wifi::supplicant::V1_3::OcspType;
+namespace {
+constexpr OcspType kTestOcspType = OcspType::REQUEST_CERT_STATUS;
+constexpr OcspType kTestInvalidOcspType = (OcspType)-1;
+}  // namespace
+
+class SupplicantStaNetworkHidlTest
+    : public ::testing::TestWithParam<std::tuple<std::string, std::string>> {
+   public:
+    virtual void SetUp() override {
+        wifi_v1_0_instance_name_ = std::get<0>(GetParam());
+        supplicant_v1_3_instance_name_ = std::get<1>(GetParam());
+        isP2pOn_ =
+            testing::deviceSupportsFeature("android.hardware.wifi.direct");
+        startSupplicantAndWaitForHidlService(wifi_v1_0_instance_name_,
+                                             supplicant_v1_3_instance_name_);
+        supplicant_ =
+            getSupplicant_1_3(supplicant_v1_3_instance_name_, isP2pOn_);
+        EXPECT_TRUE(turnOnExcessiveLogging(supplicant_));
+        sta_network_ = createSupplicantStaNetwork_1_3(supplicant_);
+        ASSERT_NE(sta_network_.get(), nullptr);
+    }
+
+    virtual void TearDown() override {
+        stopSupplicant(wifi_v1_0_instance_name_);
+    }
+
+   protected:
+    sp<ISupplicantStaIface> sta_iface_;
+    // ISupplicantStaNetwork object used for all tests in this fixture.
+    sp<ISupplicantStaNetwork> sta_network_;
+    sp<ISupplicant> supplicant_;
+    bool isP2pOn_ = false;
+    std::string wifi_v1_0_instance_name_;
+    std::string supplicant_v1_3_instance_name_;
+
+    bool isWapiSupported() {
+        uint32_t keyMgmtMask = 0;
+
+        // We need to first get the key management capabilities from the device.
+        // If WAPI is not supported, we just pass the test.
+        sta_iface_->getKeyMgmtCapabilities_1_3(
+            [&](const SupplicantStatus &status, uint32_t keyMgmtMaskInternal) {
+                EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+                keyMgmtMask = keyMgmtMaskInternal;
+            });
+
+        if (!(keyMgmtMask & ISupplicantStaNetwork::KeyMgmtMask::WAPI_PSK)) {
+            // WAPI not supported
+            return false;
+        }
+
+        return true;
+    }
+};
+
+/*
+ * SetGetOcsp
+ */
+TEST_P(SupplicantStaNetworkHidlTest, SetGetOcsp) {
+    OcspType testOcspType = kTestOcspType;
+
+    sta_network_->setOcsp(testOcspType, [](const SupplicantStatus &status) {
+        EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+    });
+
+    sta_network_->setOcsp(
+        kTestInvalidOcspType, [](const SupplicantStatus &status) {
+            EXPECT_EQ(SupplicantStatusCode::FAILURE_ARGS_INVALID, status.code);
+        });
+
+    sta_network_->getOcsp(
+        [testOcspType](const SupplicantStatus &status, OcspType ocspType) {
+            EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+            EXPECT_EQ(testOcspType, ocspType);
+        });
+}
+
+/*
+ * SetPmkCacheEntry
+ */
+TEST_P(SupplicantStaNetworkHidlTest, SetPmkCache) {
+    uint8_t bytes[128] = {0};
+    std::vector<uint8_t> serializedEntry(bytes, bytes + sizeof(bytes));
+
+    sta_network_->setPmkCache(
+        serializedEntry, [](const SupplicantStatus &status) {
+            EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+        });
+}
+
+/*
+ * SetGetKeyMgmt_1_3, check new WAPI proto support
+ */
+TEST_P(SupplicantStaNetworkHidlTest, SetGetKeyMgmt_1_3) {
+    uint32_t keyMgmt = (uint32_t)ISupplicantStaNetwork::KeyMgmtMask::WAPI_PSK;
+
+    sta_network_->setKeyMgmt_1_3(keyMgmt, [](const SupplicantStatus &status) {
+        if (SupplicantStatusCode::SUCCESS != status.code) {
+            // for unsupport case
+            EXPECT_EQ(SupplicantStatusCode::FAILURE_UNKNOWN, status.code);
+        }
+    });
+
+    sta_network_->getKeyMgmt_1_3(
+        [&keyMgmt](const SupplicantStatus &status, uint32_t keyMgmtOut) {
+            if (SupplicantStatusCode::SUCCESS != status.code) {
+                // for unsupport case
+                EXPECT_EQ(SupplicantStatusCode::FAILURE_UNKNOWN, status.code);
+            } else {
+                EXPECT_EQ(keyMgmtOut, keyMgmt);
+            }
+        });
+
+    keyMgmt = (uint32_t)ISupplicantStaNetwork::KeyMgmtMask::WAPI_CERT;
+    sta_network_->setKeyMgmt_1_3(keyMgmt, [](const SupplicantStatus &status) {
+        if (SupplicantStatusCode::SUCCESS != status.code) {
+            // for unsupport case
+            EXPECT_EQ(SupplicantStatusCode::FAILURE_UNKNOWN, status.code);
+        }
+    });
+
+    sta_network_->getKeyMgmt_1_3(
+        [&keyMgmt](const SupplicantStatus &status, uint32_t keyMgmtOut) {
+            if (SupplicantStatusCode::SUCCESS != status.code) {
+                // for unsupport case
+                EXPECT_EQ(SupplicantStatusCode::FAILURE_UNKNOWN, status.code);
+            } else {
+                EXPECT_EQ(keyMgmtOut, keyMgmt);
+            }
+        });
+}
+
+/*
+ * SetGetProto_1_3, check new WAPI proto support
+ */
+TEST_P(SupplicantStaNetworkHidlTest, SetGetProto_1_3) {
+    uint32_t wapiProto = (uint32_t)ISupplicantStaNetwork::ProtoMask::WAPI;
+    sta_network_->setProto(wapiProto, [](const SupplicantStatus &status) {
+        if (SupplicantStatusCode::SUCCESS != status.code) {
+            // for unsupport case
+            EXPECT_EQ(SupplicantStatusCode::FAILURE_UNKNOWN, status.code);
+        }
+    });
+    sta_network_->getProto([&](const SupplicantStatus &status, uint32_t proto) {
+        if (SupplicantStatusCode::SUCCESS != status.code) {
+            // for unsupport case
+            EXPECT_EQ(SupplicantStatusCode::FAILURE_UNKNOWN, status.code);
+        } else {
+            EXPECT_EQ(proto, wapiProto);
+        }
+    });
+}
+
+/*
+ * SetGetGroupCipher_1_3, check new WAPI support
+ */
+TEST_P(SupplicantStaNetworkHidlTest, SetGetGroupCipher_1_3) {
+    uint32_t groupCipher =
+        (uint32_t)ISupplicantStaNetwork::GroupCipherMask::SMS4;
+
+    sta_network_->setGroupCipher_1_3(
+        groupCipher, [](const SupplicantStatus &status) {
+            if (SupplicantStatusCode::SUCCESS != status.code) {
+                // for unsupport case
+                EXPECT_EQ(SupplicantStatusCode::FAILURE_UNKNOWN, status.code);
+            }
+        });
+
+    sta_network_->getGroupCipher_1_3(
+        [&groupCipher](const SupplicantStatus &status,
+                       uint32_t groupCipherOut) {
+            if (SupplicantStatusCode::SUCCESS != status.code) {
+                // for unsupport case
+                EXPECT_EQ(SupplicantStatusCode::FAILURE_UNKNOWN, status.code);
+            } else {
+                EXPECT_EQ(groupCipherOut, groupCipher);
+            }
+        });
+}
+
+/*
+ * SetGetPairwiseCipher_1_3, check new WAPI support
+ */
+TEST_P(SupplicantStaNetworkHidlTest, SetGetPairwiseCipher_1_3) {
+    uint32_t pairwiseCipher =
+        (uint32_t)ISupplicantStaNetwork::PairwiseCipherMask::SMS4;
+
+    sta_network_->setPairwiseCipher_1_3(
+        pairwiseCipher, [](const SupplicantStatus &status) {
+            if (SupplicantStatusCode::SUCCESS != status.code) {
+                // for unsupport case
+                EXPECT_EQ(SupplicantStatusCode::FAILURE_UNKNOWN, status.code);
+            }
+        });
+
+    sta_network_->getPairwiseCipher_1_3(
+        [&pairwiseCipher](const SupplicantStatus &status,
+                          uint32_t pairwiseCipherOut) {
+            if (SupplicantStatusCode::SUCCESS != status.code) {
+                // for unsupport case
+                EXPECT_EQ(SupplicantStatusCode::FAILURE_UNKNOWN, status.code);
+            } else {
+                EXPECT_EQ(pairwiseCipherOut, pairwiseCipher);
+            }
+        });
+}
+
+/*
+ * SetGetWapiCertSuite
+ */
+TEST_P(SupplicantStaNetworkHidlTest, SetGetWapiCertSuite) {
+    hidl_string testWapiCertSuite = "suite";
+
+    if (isWapiSupported()) {
+        sta_network_->setWapiCertSuite(
+            testWapiCertSuite, [](const SupplicantStatus &status) {
+                if (SupplicantStatusCode::SUCCESS != status.code) {
+                    // for unsupport case
+                    EXPECT_EQ(SupplicantStatusCode::FAILURE_UNKNOWN,
+                              status.code);
+                }
+            });
+
+        sta_network_->getWapiCertSuite([testWapiCertSuite](
+                                           const SupplicantStatus &status,
+                                           const hidl_string &wapiCertSuite) {
+            if (SupplicantStatusCode::SUCCESS != status.code) {
+                // for unsupport case
+                EXPECT_EQ(SupplicantStatusCode::FAILURE_UNKNOWN, status.code);
+            } else {
+                EXPECT_EQ(testWapiCertSuite, wapiCertSuite);
+            }
+        });
+    } else {
+        sta_network_->setWapiCertSuite(
+            testWapiCertSuite, [](const SupplicantStatus &status) {
+                EXPECT_EQ(SupplicantStatusCode::FAILURE_UNKNOWN, status.code);
+            });
+
+        sta_network_->getWapiCertSuite(
+            [testWapiCertSuite](const SupplicantStatus &status,
+                                const hidl_string &wapiCertSuite __unused) {
+                EXPECT_EQ(SupplicantStatusCode::FAILURE_UNKNOWN, status.code);
+            });
+    }
+}
+/*
+ * SetEapErp
+ */
+TEST_P(SupplicantStaNetworkHidlTest, SetEapErp) {
+    uint32_t keyMgmtMask = 0;
+    sta_iface_->getKeyMgmtCapabilities_1_3(
+        [&](const SupplicantStatus &status, uint32_t keyMgmtMaskInternal) {
+            EXPECT_EQ(SupplicantStatusCode::SUCCESS, status.code);
+            keyMgmtMask = keyMgmtMaskInternal;
+        });
+
+    SupplicantStatusCode expectedStatusCode =
+        (keyMgmtMask & (ISupplicantStaNetwork::KeyMgmtMask::FILS_SHA256 |
+                        ISupplicantStaNetwork::KeyMgmtMask::FILS_SHA384))
+            ? SupplicantStatusCode::SUCCESS
+            : SupplicantStatusCode::FAILURE_UNKNOWN;
+
+    sta_network_->setEapErp(
+        true, [expectedStatusCode](const SupplicantStatus &status) {
+            EXPECT_EQ(expectedStatusCode, status.code);
+        });
+}
+INSTANTIATE_TEST_CASE_P(
+    PerInstance, SupplicantStaNetworkHidlTest,
+    testing::Combine(
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(
+            android::hardware::wifi::V1_0::IWifi::descriptor)),
+        testing::ValuesIn(android::hardware::getAllHalInstanceNames(
+            android::hardware::wifi::supplicant::V1_3::ISupplicant::
+                descriptor))),
+    android::hardware::PrintInstanceTupleNameToString<>);